summaryrefslogtreecommitdiffstats
path: root/src/3rdparty/libpng
diff options
context:
space:
mode:
authoraavit <qt-info@nokia.com>2010-02-15 12:08:49 (GMT)
committeraavit <qt-info@nokia.com>2010-02-15 12:14:04 (GMT)
commite9aac1679a651107735414a56ff04621d3287526 (patch)
treefa5905e80a82847fc0dbb044ae51a62ae2cf5deb /src/3rdparty/libpng
parentc9a13228d61de352edfb0019121bc83160d3b79f (diff)
downloadQt-e9aac1679a651107735414a56ff04621d3287526.zip
Qt-e9aac1679a651107735414a56ff04621d3287526.tar.gz
Qt-e9aac1679a651107735414a56ff04621d3287526.tar.bz2
Add libpng 1.4.0
This is a clean copy of libpng 1.2.40, except that the contribs directory has been removed, as usual. Our build modifications will follow in a separate commit.
Diffstat (limited to 'src/3rdparty/libpng')
-rw-r--r--src/3rdparty/libpng/ANNOUNCE360
-rw-r--r--src/3rdparty/libpng/CHANGES2469
-rw-r--r--src/3rdparty/libpng/CMakeLists.txt265
-rw-r--r--src/3rdparty/libpng/INSTALL143
-rw-r--r--src/3rdparty/libpng/LICENSE111
-rw-r--r--src/3rdparty/libpng/README257
-rw-r--r--src/3rdparty/libpng/TODO31
-rw-r--r--src/3rdparty/libpng/aclocal.m48949
-rwxr-xr-xsrc/3rdparty/libpng/autogen.sh25
-rwxr-xr-xsrc/3rdparty/libpng/config.guess1561
-rw-r--r--src/3rdparty/libpng/config.h.in86
-rwxr-xr-xsrc/3rdparty/libpng/config.sub1686
-rwxr-xr-xsrc/3rdparty/libpng/configure13839
-rw-r--r--src/3rdparty/libpng/configure.ac124
-rwxr-xr-xsrc/3rdparty/libpng/depcomp630
-rw-r--r--src/3rdparty/libpng/example.c835
-rwxr-xr-xsrc/3rdparty/libpng/install-sh520
-rw-r--r--src/3rdparty/libpng/libpng-1.4.0.txt3277
-rwxr-xr-xsrc/3rdparty/libpng/libpng-config.in127
-rw-r--r--src/3rdparty/libpng/libpng.34361
-rw-r--r--src/3rdparty/libpng/libpng.pc.in11
-rw-r--r--src/3rdparty/libpng/libpngpf.3810
-rwxr-xr-xsrc/3rdparty/libpng/ltmain.sh8406
-rwxr-xr-xsrc/3rdparty/libpng/missing376
-rwxr-xr-xsrc/3rdparty/libpng/mkinstalldirs162
-rw-r--r--src/3rdparty/libpng/png.574
-rw-r--r--src/3rdparty/libpng/png.c916
-rw-r--r--src/3rdparty/libpng/png.h2552
-rw-r--r--src/3rdparty/libpng/pngbar.jpgbin0 -> 2498 bytes
-rw-r--r--src/3rdparty/libpng/pngbar.pngbin0 -> 2399 bytes
-rw-r--r--src/3rdparty/libpng/pngconf.h1482
-rw-r--r--src/3rdparty/libpng/pngerror.c402
-rw-r--r--src/3rdparty/libpng/pngget.c919
-rw-r--r--src/3rdparty/libpng/pngmem.c611
-rw-r--r--src/3rdparty/libpng/pngnow.pngbin0 -> 2069 bytes
-rw-r--r--src/3rdparty/libpng/pngpread.c1721
-rw-r--r--src/3rdparty/libpng/pngpriv.h955
-rw-r--r--src/3rdparty/libpng/pngread.c1349
-rw-r--r--src/3rdparty/libpng/pngrio.c163
-rw-r--r--src/3rdparty/libpng/pngrtran.c4195
-rw-r--r--src/3rdparty/libpng/pngrutil.c3336
-rw-r--r--src/3rdparty/libpng/pngset.c1163
-rw-r--r--src/3rdparty/libpng/pngtest.c1630
-rw-r--r--src/3rdparty/libpng/pngtest.pngbin0 -> 8608 bytes
-rw-r--r--src/3rdparty/libpng/pngtrans.c676
-rw-r--r--src/3rdparty/libpng/pngwio.c241
-rw-r--r--src/3rdparty/libpng/pngwrite.c1454
-rw-r--r--src/3rdparty/libpng/pngwtran.c565
-rw-r--r--src/3rdparty/libpng/pngwutil.c2783
-rw-r--r--src/3rdparty/libpng/projects/cbuilder5/README.txt11
-rw-r--r--src/3rdparty/libpng/projects/cbuilder5/libpng.bpf22
-rw-r--r--src/3rdparty/libpng/projects/cbuilder5/libpng.bpg25
-rw-r--r--src/3rdparty/libpng/projects/cbuilder5/libpng.bpr157
-rw-r--r--src/3rdparty/libpng/projects/cbuilder5/libpng.cpp29
-rw-r--r--src/3rdparty/libpng/projects/cbuilder5/libpng.readme.txt25
-rw-r--r--src/3rdparty/libpng/projects/cbuilder5/libpngstat.bpf22
-rw-r--r--src/3rdparty/libpng/projects/cbuilder5/libpngstat.bpr109
-rw-r--r--src/3rdparty/libpng/projects/cbuilder5/zlib.readme.txt14
-rw-r--r--src/3rdparty/libpng/projects/visualc6/README.txt55
-rw-r--r--src/3rdparty/libpng/projects/visualc6/libpng.dsp328
-rw-r--r--src/3rdparty/libpng/projects/visualc6/libpng.dsw59
-rw-r--r--src/3rdparty/libpng/projects/visualc6/pngtest.dsp178
-rw-r--r--src/3rdparty/libpng/projects/visualc71/PRJ0041.mak21
-rw-r--r--src/3rdparty/libpng/projects/visualc71/README.txt55
-rw-r--r--src/3rdparty/libpng/projects/visualc71/README_zlib.txt42
-rw-r--r--src/3rdparty/libpng/projects/xcode/Info.plist26
-rw-r--r--src/3rdparty/libpng/projects/xcode/README.txt9
-rw-r--r--src/3rdparty/libpng/projects/xcode/libpng.xcodeproj/.gitignore2
-rw-r--r--src/3rdparty/libpng/projects/xcode/libpng.xcodeproj/project.pbxproj353
-rw-r--r--src/3rdparty/libpng/scripts/README.txt67
-rw-r--r--src/3rdparty/libpng/scripts/SCOPTIONS.ppc7
-rw-r--r--src/3rdparty/libpng/scripts/descrip.mms52
-rwxr-xr-xsrc/3rdparty/libpng/scripts/libpng-config-body.in96
-rwxr-xr-xsrc/3rdparty/libpng/scripts/libpng-config-head.in24
-rw-r--r--src/3rdparty/libpng/scripts/libpng.pc.in10
-rw-r--r--src/3rdparty/libpng/scripts/makefile.32sunu257
-rw-r--r--src/3rdparty/libpng/scripts/makefile.64sunu257
-rw-r--r--src/3rdparty/libpng/scripts/makefile.acorn50
-rw-r--r--src/3rdparty/libpng/scripts/makefile.aix116
-rw-r--r--src/3rdparty/libpng/scripts/makefile.amiga51
-rw-r--r--src/3rdparty/libpng/scripts/makefile.atari55
-rw-r--r--src/3rdparty/libpng/scripts/makefile.bc32145
-rw-r--r--src/3rdparty/libpng/scripts/makefile.beos230
-rw-r--r--src/3rdparty/libpng/scripts/makefile.bor156
-rw-r--r--src/3rdparty/libpng/scripts/makefile.cegcc113
-rw-r--r--src/3rdparty/libpng/scripts/makefile.cygwin293
-rw-r--r--src/3rdparty/libpng/scripts/makefile.darwin237
-rw-r--r--src/3rdparty/libpng/scripts/makefile.dec217
-rw-r--r--src/3rdparty/libpng/scripts/makefile.dj258
-rw-r--r--src/3rdparty/libpng/scripts/makefile.elf279
-rw-r--r--src/3rdparty/libpng/scripts/makefile.freebsd48
-rw-r--r--src/3rdparty/libpng/scripts/makefile.gcc83
-rw-r--r--src/3rdparty/libpng/scripts/makefile.hp64239
-rw-r--r--src/3rdparty/libpng/scripts/makefile.hpgcc248
-rw-r--r--src/3rdparty/libpng/scripts/makefile.hpux236
-rw-r--r--src/3rdparty/libpng/scripts/makefile.ibmc77
-rw-r--r--src/3rdparty/libpng/scripts/makefile.intel106
-rw-r--r--src/3rdparty/libpng/scripts/makefile.knr103
-rw-r--r--src/3rdparty/libpng/scripts/makefile.linux253
-rw-r--r--src/3rdparty/libpng/scripts/makefile.mingw280
-rw-r--r--src/3rdparty/libpng/scripts/makefile.mips87
-rw-r--r--src/3rdparty/libpng/scripts/makefile.msc91
-rw-r--r--src/3rdparty/libpng/scripts/makefile.ne12bsd46
-rw-r--r--src/3rdparty/libpng/scripts/makefile.netbsd46
-rw-r--r--src/3rdparty/libpng/scripts/makefile.openbsd76
-rw-r--r--src/3rdparty/libpng/scripts/makefile.os272
-rw-r--r--src/3rdparty/libpng/scripts/makefile.sco232
-rw-r--r--src/3rdparty/libpng/scripts/makefile.sggcc243
-rw-r--r--src/3rdparty/libpng/scripts/makefile.sgi247
-rw-r--r--src/3rdparty/libpng/scripts/makefile.so9254
-rw-r--r--src/3rdparty/libpng/scripts/makefile.solaris251
-rw-r--r--src/3rdparty/libpng/scripts/makefile.solaris-x86251
-rw-r--r--src/3rdparty/libpng/scripts/makefile.std95
-rw-r--r--src/3rdparty/libpng/scripts/makefile.sunos100
-rw-r--r--src/3rdparty/libpng/scripts/makefile.tc389
-rw-r--r--src/3rdparty/libpng/scripts/makefile.vcwin32103
-rw-r--r--src/3rdparty/libpng/scripts/makefile.watcom112
-rw-r--r--src/3rdparty/libpng/scripts/makevms.com142
-rw-r--r--src/3rdparty/libpng/scripts/png32ce.def257
-rw-r--r--src/3rdparty/libpng/scripts/pngos2.def251
-rw-r--r--src/3rdparty/libpng/scripts/pngwin.def212
-rw-r--r--src/3rdparty/libpng/scripts/pngwin.rc112
-rw-r--r--src/3rdparty/libpng/scripts/smakefile.ppc33
-rwxr-xr-xsrc/3rdparty/libpng/test-pngtest.sh3
124 files changed, 85998 insertions, 0 deletions
diff --git a/src/3rdparty/libpng/ANNOUNCE b/src/3rdparty/libpng/ANNOUNCE
new file mode 100644
index 0000000..8bb11d2
--- /dev/null
+++ b/src/3rdparty/libpng/ANNOUNCE
@@ -0,0 +1,360 @@
+
+Libpng 1.4.0 - January 3, 2010
+
+This is a public release of libpng, intended for use in production codes.
+
+Files available for download:
+
+Source files with LF line endings (for Unix/Linux) and with a
+"configure" script
+
+ libpng-1.4.0.tar.xz (LZMA-compressed, recommended)
+ libpng-1.4.0.tar.gz
+ libpng-1.4.0.tar.bz2
+
+Source files with CRLF line endings (for Windows), without the
+"configure" script
+
+ lpng140.zip
+ lpng140.7z
+
+Other information:
+
+ libpng-1.4.0-README.txt
+ libpng-1.4.0-LICENSE.txt
+
+Changes since the last public release (1.2.10):
+
+version 1.4.0 [January 3, 2010]
+
+ Enabled iTXt support (changes png_struct, thus requires so-number change).
+ Cleaned up PNG_ASSEMBLER_CODE_SUPPORTED vs PNG_MMX_CODE_SUPPORTED
+ Eliminated PNG_1_0_X and PNG_1_2_X macros.
+ Removed deprecated functions png_read_init, png_write_init, png_info_init,
+ png_permit_empty_plte, png_set_gray_1_2_4_to_8, and removed the
+ deprecated macro PNG_MAX_UINT.
+ Moved "PNG_INTERNAL" parts of png.h and pngconf.h into pngintrn.h
+ Removed all WIN32_WCE #ifdefs except those involving the
+ time.h "tm" structure (Cosmin)
+ Reduced dependency on C-runtime library when on Windows (Simon-Pierre)
+ Replaced sprintf() with png_sprintf() (Simon-Pierre)
+ Revised makefiles to avoid making links to libpng.so.*
+ Added a note in libpng.txt that png_set_sig_bytes(8) can be used when
+ writing an embedded PNG without the 8-byte signature.
+ Updated scripts/pngos2.def, pngw32.def, and projects/wince/png32ce.def
+ Added PNG_NO_GET_INT_32 and PNG_NO_SAVE_INT_32 macros.
+ Scripts/libpng.pc.in contained "configure" style version info and would
+ not work with makefiles.
+ Increased sprintf buffer from 50 to 52 chars in pngrutil.c to avoid
+ buffer overflow.
+ Fixed bug in example.c (png_set_palette_rgb -> png_set_palette_to_rgb))
+ Changed sonum from 0 to 1.
+ Removed unused prototype for png_check_sig() from png.h
+ Prepended "#! /bin/sh" to ltmail.sh and contrib/pngminus/*.sh (Cosmin).
+ Avoided potential buffer overflow and optimized buffer in
+ png_write_sCAL(), png_write_sCAL_s() (Cosmin).
+ Removed the include directories and libraries from CFLAGS and LDFLAGS
+ in scripts/makefile.gcc (Nelson A. de Oliveira, Cosmin).
+ Exported png_write_sig (Cosmin).
+ Optimized buffer in png_handle_cHRM() (Cosmin).
+ Allow zero-length IDAT chunks after the entire zlib datastream, but not
+ after another intervening chunk type.
+ Set pHYs = 2835 x 2835 pixels per meter, and added
+ pngtest now produces, and made some cosmetic changes to pngtest output.
+ sCAL = 0.352778e-3 x 0.352778e-3 meters, in pngtest.png (Cosmin).
+ Added png_set_benign_errors(), png_benign_error(), png_chunk_benign_error().
+ Revised INSTALL and autogen.sh
+ Fixed typo in several makefiles (-W1 should be -Wl)
+ Added typedef for png_int_32 and png_uint_32 on 64-bit systems.
+ Added one zero element to png_gamma_shift[] array in pngrtran.c to avoid
+ reading out of bounds.
+ Added demonstration of user chunk support in pngtest.c, to support the
+ public sTER chunk and a private vpAg chunk.
+ Removed ordinals from scripts/pngw32.def and removed png_info_int and
+ png_set_gray_1_2_4_to_8 entries.
+ Inline call of png_get_uint_32() in png_get_uint_31().
+ Removed WINCE and Netware projects.
+ Removed standalone Y2KINFO file.
+ Removed AC_FUNC_MALLOC from configure.ac.
+ Added a warning when writing iCCP profile with mismatched profile length.
+ Patched pnggccrd.c to assemble on x86_64 platforms.
+ Moved chunk header reading into a separate function png_read_chunk_header()
+ in pngrutil.c. The chunk header (len+sig) is now serialized in a single
+ operation (Cosmin).
+ Implemented support for I/O states. Added png_ptr member io_state, and
+ functions png_get_io_chunk_name() and png_get_io_state() in pngget.c
+ (Cosmin).
+ Added png_get_io_chunk_name and png_get_io_state to scripts/*.def (Cosmin).
+ Renamed scripts/pngw32.* to scripts/pngwin.* (Cosmin).
+ Removed the include directories and libraries from CFLAGS and LDFLAGS
+ in scripts/makefile.gcc (Cosmin).
+ Used png_save_uint_32() to set vpAg width and height in pngtest.c (Cosmin).
+ Cast to proper type when getting/setting vpAg units in pngtest.c (Cosmin).
+ Added pngintrn.h to the Visual C++ projects (Cosmin).
+ Removed scripts/list (Cosmin).
+ Updated copyright year in scripts/pngwin.def (Cosmin).
+ Removed PNG_TYPECAST_NULL and used standard NULL consistently (Cosmin).
+ Disallowed the user to redefine png_size_t, and enforced a consistent use
+ of png_size_t across libpng (Cosmin).
+ Changed the type of png_ptr->rowbytes, PNG_ROWBYTES() and friends
+ to png_size_t (Cosmin).
+ Removed png_convert_size() and replaced png_sizeof with sizeof (Cosmin).
+ Removed some unnecessary type casts (Cosmin).
+ Changed prototype of png_get_compression_buffer_size() and
+ png_set_compression_buffer_size() to work with png_size_t instead of
+ png_uint_32 (Cosmin).
+ Removed png_memcpy_check() and png_memset_check() (Cosmin).
+ Fixed a typo (png_byte --> png_bytep) in libpng.3 and libpng.txt (Cosmin).
+ Clarified that png_zalloc() does not clear the allocated memory,
+ and png_zalloc() and png_zfree() cannot be PNGAPI (Cosmin).
+ Renamed png_mem_size_t to png_alloc_size_t, fixed its definition in
+ pngconf.h, and used it in all memory allocation functions (Cosmin).
+ Renamed pngintrn.h to pngpriv.h, added a comment at the top of the file
+ mentioning that the symbols declared in that file are private, and
+ updated the scripts and the Visual C++ projects accordingly (Cosmin).
+ Removing trailing '.' from the warning and error messages (Cosmin).
+ Revised many of the makefiles to write their defines in pngdefs.h.
+ Changed "logical" to "bitwise" in the documentation.
+ Work around Intel-Mac compiler bug by setting PNG_NO_MMX_CODE in pngconf.h
+ Add a typecast to stifle compiler warning in pngrutil.c
+ Detect and fix attempt to write wrong iCCP profile length.
+ Fix potential buffer overflow in sPLT chunk handler.
+ Fix Makefile.am to not try to link to noexistent files.
+ Check all exported functions for NULL png_ptr.
+ Built Makefile.in with automake-1.9.6 instead of 1.9.2.
+ Add "install: all" in Makefile.am so "configure; make install" will work.
+ Added a typecast in png_zalloc().
+ Changed "new_key[79] = '\0';" to "(*new_key)[79] = '\0';" in pngwutil.c
+ Add "png_bytep" typecast to profile while calculating length in pngwutil.c
+ Added scripts/CMakeLists.txt
+ Added "png_ptr->num_trans=0" before error return in png_handle_tRNS,
+ to eliminate a vulnerability (CVE-2007-2554, CERT VU#684664)
+ Added png_ptr->unknown_chunk to hold working unknown chunk data, so it
+ can be free'ed in case of error. Revised unknown chunk handling in
+ pngrutil.c and pngpread.c to use this structure.
+ Prefer PNG_USE_PNGVCRD when _MSC_VER is defined in pngconf.h
+ Revised pngvcrd.c for improved efficiency.
+ Moved local array "chunkdata" from pngrutil.c to the png_struct, so
+ it will be freed by png_read_destroy() in case of a read error (Kurt
+ Christensen).
+ Change "purpose" and "buffer" to png_ptr->chunkdata to avoid memory leaking.
+ Change all "chunkdata" to "png_ptr->chunkdata" in png_decompress_chunk(),
+ and remove "chunkdata" from parameter list.
+ Put a call to png_check_chunk_name() in png_read_chunk_header().
+ Removed two calls to png_check_chunk_name() occuring later in the process.
+ Define PNG_NO_ERROR_NUMBERS by default in pngconf.h
+ Added png_push_have_buffer() function to pngpread.c
+ Eliminated PNG_BIG_ENDIAN_SUPPORTED and associated png_get_* macros.
+ Made inline expansion of png_get_*() optional with PNG_USE_READ_MACROS.
+ Eliminated all PNG_USELESS_TESTS and PNG_CORRECT_PALETTE_SUPPORTED code.
+ Synced contrib directory and configure files with libpng-1.2.30beta06.
+ Changed "-Wall" to "-W -Wall" in the CFLAGS in all makefiles (Cosmin Truta)
+ Declared png_ptr "volatile" in pngread.c and pngwrite.c to avoid warnings.
+ Updated contrib/visupng/cexcept.h to version 2.0.1
+ Added PNG_LITERAL_CHARACTER macros for #, [, and ].
+ Moved newline character from individual png_debug messages into the
+ png_debug macros.
+ Allow user to #define their own png_debug, png_debug1, and png_debug2.
+ Added PNG_STRING_NEWLINE macro
+ Added PNG_STRING_COPYRIGHT macro.
+ Added non-ISO versions of png_debug macros.
+ Added PNG_WRITE_FLUSH_SUPPORTED and PNG_WRITE_FLUSH_AFTER_IEND_SUPPORTED
+ blocks around new png_flush() call.
+ Revised PNG_NO_STDIO version of png_write_flush()
+ Added png_get|set_chunk_cache_max() to limit the total number of sPLT,
+ text, and unknown chunks that can be stored.
+ Shortened tIME_string to 29 bytes in pngtest.c
+ Revised makefile.darwin to fix shared library numbering.
+ Change png_set_gray_1_2_4_to_8() to png_set_expand_gray_1_2_4_to_8()
+ in example.c (debian bug report)
+ Sync with tEXt vulnerability fix in libpng-1.2.33rc02.
+ Added png_check_cHRM in png.c and moved checking from pngget.c, pngrutil.c,
+ and pngwrite.c
+ Added check for zero-area RGB cHRM triange in png_check_cHRM() and
+ png_check_cHRM_fixed().
+ Revised png_warning() to write its message on standard output by default
+ when warning_fn is NULL.
+ Eliminated png_check_cHRM(). Instead, always use png_check_cHRM_fixed().
+ In png_check_cHRM_fixed(), ensure white_y is > 0, and removed redundant
+ check for all-zero coordinates that is detected by the triangle check.
+ Rearranged test expressions in png_check_cHRM_fixed() to avoid internal
+ overflows.
+ Added PNG_NO_CHECK_cHRM conditional.
+ Fixed string vs pointer-to-string error in png_check_keyword().
+ Added PNG_NO_CHECK_cHRM conditional.
+ Merge png_debug with version 1.2.34beta04.
+ Removed redundant check for key==NULL before calling png_check_keyword()
+ to ensure that new_key gets initialized and removed extra warning
+ (Merge with version 1.2.34beta05 -- Arvan Pritchard).
+ Added PNG_TRANSFORM_STRIP_FILLER_BEFORE and PNG_TRANSFORM_STRIP_FILLER_AFTER
+ conditionals and deprecated PNG_TRANSFORM_STRIP_FILLER (Jim Barry).
+ Turned off PNG_READ_DITHER_SUPPORTED by default.
+ Combined several instances of png_malloc(); png_memset() into png_calloc().
+ Fixed order of #ifdef directives in the png_debug defines in png.h
+ (bug introduced in libpng-1.2.34).
+ Revised comments in png_set_read_fn() and png_set_write_fn().
+ Use png_calloc() instead of png_malloc() to allocate big_row_buf when
+ reading an interlaced file, to avoid a possible UMR.
+ Revised libpng*.txt and png.h documentation about use of png_write_flush()
+ and png_set_write_fn().
+ Removed fflush() from pngtest.c.
+ Added "#define PNG_NO_WRITE_FLUSH" to contrib/pngminim/encoder/pngusr.h
+ Removed fflush() from pngtest.c.
+ Added "#define PNG_NO_WRITE_FLUSH" to contrib/pngminim/encoder/pngusr.h
+ Added a section on differences between 1.0.x and 1.2.x to libpng.3/libpng.txt
+ Fixed potential memory leak of "new_name" in png_write_iCCP() (Ralph Giles)
+ Added "ifndef PNG_SKIP_SETJMP_CHECK" block in pngconf.h to allow
+ application code writers to bypass the check for multiple inclusion
+ of setjmp.h when they know that it is safe to ignore the situation.
+ Eliminated internal use of setjmp() in pngread.c and pngwrite.c
+ Eliminated deprecated png_read_init_3() and png_write_init_3() functions.
+ Renamed "user_chunk_data" to "my_user_chunk_data" in pngtest.c to suppress
+ "shadowed declaration" warning from gcc-4.3.3.
+ Renamed "gamma" to "png_gamma" in pngset.c to avoid "shadowed declaration"
+ warning about a global "gamma" variable in math.h on some platforms.
+ Removed pngprefs.h and MMX from makefiles
+ Rebuilt configure scripts with autoconf-2.63 instead of 2.62
+ Clarified usage of sig_bit versus sig_bit_p in example.c (Vincent Torri)
+ Reformated sources in libpng style (3-space intentation, comment format)
+ Fixed typo in libpng docs (PNG_FILTER_AVE should be PNG_FILTER_AVG)
+ Added sections about the git repository and our coding style to the
+ documentation
+ Relocated misplaced #endif in pngwrite.c, sCAL chunk handler.
+ Conditionally compile png_read_finish_row() which is not used by
+ progressive readers.
+ Added contrib/pngminim/preader to demonstrate building minimal progressive
+ decoder, based on contrib/gregbook with embedded libpng and zlib.
+ In contrib/pngminim/*, renamed "makefile.std" to "makefile", since there
+ is only one makefile in those directories, and revised the README files
+ accordingly.
+ Added "#define PNG_NO_WRITE_SWAP" to contrib/pngminim/encoder/pngusr.h
+ and "define PNG_NO_READ_SWAP" to decoder/pngusr.h and preader/pngusr.h
+ Added a section in the documentation about using png_get_io_ptr() in
+ configure scripts to detect the presence of libpng.
+ Revised libpng*.txt and libpng.3 to mention calling png_set_IHDR()
+ multiple times and to specify the sample order in the tRNS chunk,
+ because the ISO PNG specification has a typo in the tRNS table.
+ Changed several PNG_UNKNOWN_CHUNK_SUPPORTED to
+ PNG_HANDLE_AS_UNKNOWN_SUPPORTED, to make the png_set_keep mechanism
+ available for ignoring known chunks even when not saving unknown chunks.
+ Adopted preference for consistent use of "#ifdef" and "#ifndef" versus
+ "#if defined()" and "if !defined()" where possible.
+ Eliminated PNG_LEGACY_SUPPORTED code.
+ Moved the various unknown chunk macro definitions outside of the
+ PNG_READ|WRITE_ANCILLARY_CHUNK_SUPPORTED blocks.
+ Added a reference to the libpng license in each file.
+ Relocated INVERT_ALPHA within png_read_png() and png_write_png().
+ Added high-level API transform PNG_TRANSFORM_GRAY_TO_RGB.
+ Added an "xcode" project to the projects directory (Alam Arias).
+ Avoid some tests in filter selection in pngwutil.c
+ Avoid a possible NULL dereference in debug build, in png_set_text_2().
+ (bug introduced in libpng-0.95, discovered by Evan Rouault)
+ Rebuilt configure scripts with autoconf-2.65
+ Replaced *.tar.lzma with *.tar.xz in distribution. Get the xz codec
+ from <http://tukaani.org/xz>.
+ Reject attempt to write iCCP chunk with negative embedded profile length
+ (JD Chen)
+ Changed "trans" to "trans_alpha" and changed "trans_values" to "trans_color".
+ Removed lpXYZ.tar.bz2 (with CRLF), KNOWNBUG, libpng-x.y.z-KNOWNBUG.txt,
+ and the "noconfig" files from the distribution.
+ Moved CMakeLists.txt from scripts into the main libpng directory.
+ Various bugfixes and improvements to CMakeLists.txt (Philip Lowman)
+ Converted all PNG_NO_* tests to PNG_*_SUPPORTED everywhere except pngconf.h
+ Eliminated PNG_NO_FREE_ME and PNG_FREE_ME_SUPPORTED macros.
+ Use png_malloc plus a loop instead of png_calloc() to initialize
+ row_pointers in png_read_png().
+ Eliminated PNG_GLOBAL_ARRAYS and PNG_LOCAL_ARRAYS; always use local arrays.
+ Eliminated PNG_CALLOC_SUPPORTED macro and always provide png_calloc().
+ Removed scripts/libpng.icc
+ Changed typecast of filler from png_byte to png_uint_16 in png_set_filler().
+ (Dennis Gustafsson)
+ Eliminated unused PNG_FLAG_FREE_* defines from pngpriv.h
+ Expanded TAB characters in pngrtran.c
+ Removed PNG_CONST from all "PNG_CONST PNG_CHNK" declarations to avoid
+ compiler complaints about doubly declaring things "const".
+ Eliminated unused png_ptr->row_buf_size
+ Changed all "#if [!]defined(X)" to "if[n]def X" where possible.
+ Moved redundant IHDR checking into new png_check_IHDR() in png.c
+ and report all errors found in the IHDR data.
+ Eliminated useless call to png_check_cHRM() from pngset.c
+ Eliminated a shadowed declaration of "pp" in png_handle_sPLT().
+ Patched ltmain.sh for wince support.
+ Added PNG_CONVERT_tIME_SUPPORTED macro.
+ Make inclusion of time.h in pngconf.h depend on PNG_CONVERT_tIME_SUPPORTED
+ Make #define PNG_CONVERT_tIME_SUPPORTED depend on PNG_WRITE_tIME_SUPPORTED
+ Updated scripts/pngw32.def and projects/wince/png32ce.def
+ Copied projects/wince/png32ce.def to the scripts directory.
+ Added scripts/makefile.cegcc
+ Revised libpng*.txt to describe differences from 1.2.40 to 1.4.0
+ Added PNG_DEPSTRUCT, PNG_DEPRECATED, PNG_USE_RESULT, PNG_NORETURN, and
+ PNG_ALLOCATED macros to detect deprecated direct access to the
+ png_struct or info_struct members and other deprecated usage in
+ applications (John Bowler).
+ Updated scripts/makefile* to add "-DPNG_CONFIGURE_LIBPNG" to CFLAGS,
+ to prevent warnings about direct access to png structs by libpng
+ functions while building libpng. They need to be tested, especially
+ those using compilers other than gcc.
+ Updated CMakeLists.txt to add "-DPNG_CONFIGURE_LIBPNG" to the definitions.
+ Updated projects/visualc6 and visualc71 with "/d PNG_CONFIGURE_LIBPNG".
+ They should work but still need to be updated to remove
+ references to pnggccrd.c or pngvcrd.c and ASM building.
+ Added README.txt to the beos, cbuilder5, netware, and xcode projects warning
+ that they need to be updated, to remove references to pnggccrd.c and
+ pngvcrd.c and to depend on pngpriv.h
+ Removed three direct references to read_info_ptr members in pngtest.c
+ that were detected by the new PNG_DEPSTRUCT macro.
+ Moved the png_debug macro definitions and the png_read_destroy(),
+ png_write_destroy() and png_far_to_near() prototypes from png.h
+ to pngpriv.h (John Bowler)
+ Moved the synopsis lines for png_read_destroy(), png_write_destroy()
+ png_debug(), png_debug1(), and png_debug2() from libpng.3 to libpngpf.3.
+ Removed the obsolete, unused pnggccrd.c and pngvcrd.c files.
+ Removed dependency of pngtest.o on pngpriv.h in the makefiles.
+ Added -DPNG_CONFIGURE_LIBPNG to contrib/pngminm/*/makefile
+ Changed png_check_sig() to !png_sig_cmp() in contrib programs.
+ Corrected the png_get_IHDR() call in contrib/gregbook/readpng2.c
+ Changed pngminim/*/gather.sh to stop trying to remove pnggccrd.c and pngvcrd.c
+ Added dependency on pngpriv.h in contrib/pngminim/*/makefile
+ Revised Makefile.am to use libpng.sys while building libpng.so
+ so that only PNG_EXPORT functions are exported.
+ Removed the deprecated png_check_sig() function/macro.
+ Removed recently removed function names from scripts/*.def
+ Added PNG_PRIVATE macro definition in pngconf.h for possible future use.
+ Removed projects/beos and netware.txt; no one seems to be supporting them.
+ Moved libpng-config.in and libpng.pc-configure.in out of the scripts
+ directory, to libpng-config.in and libpng.pc.in, respectively, and
+ modified Makefile.am and configure.ac accordingly. Now "configure"
+ needs nothing from the "scripts" directory.
+ Removed ASM builds from projects/visualc6 and projects/visualc71
+ Removed scripts/makefile.nommx and makefile.vcawin32
+ Revised CMakeLists.txt to account for new location of libpng-config.in
+ and libpng.pc.in
+ Updated INSTALL to reflect removal and relocation of files.
+ Moved descriptions of makefiles and other scripts out of INSTALL into
+ scripts/README.txt
+ Updated the copyright year in scripts/pngwin.rc from 2006 to 2009.
+ Removed obsolete comments about ASM from projects/visualc71/README_zlib.txt
+ Align row_buf on 16-byte boundary in memory.
+ Make the 'png_jmpbuf' macro expand to a call that records the correct
+ longjmp function as well as returning a pointer to the setjmp
+ jmp_buf buffer, and marked direct access to jmpbuf 'deprecated'.
+ (John Bowler)
+ Changed "/255" to "/255.0" in background calculations to make it clear
+ that the 255 is used as a double.
+ Added "#define PNG_NO_PEDANTIC_WARNINGS" in the libpng source files.
+ Revised scripts/makefile.netbsd, makefile.openbsd, and makefile.sco
+ to put png.h and pngconf.h in $prefix/include, like the other scripts,
+ instead of in $prefix/include/libpng. Also revised makefile.sco
+ to put them in $prefix/include/libpng14 instead of in
+ $prefix/include/libpng/libpng14.
+ Added "bit_depth" parameter to the private png_build_gamma_table() function.
+ Use png_calloc() instead of png_malloc(); png_memset() in pngrutil.c
+ Avoid deprecated references to png_ptr-io_ptr and png_ptr->error_ptr
+ in pngtest.c
+
+Send comments/corrections/commendations to png-mng-implement at lists.sf.net
+(subscription required; visit
+https://lists.sourceforge.net/lists/listinfo/png-mng-implement
+to subscribe) or to glennrp at users.sourceforge.net
+
+Glenn R-P
diff --git a/src/3rdparty/libpng/CHANGES b/src/3rdparty/libpng/CHANGES
new file mode 100644
index 0000000..df44f16
--- /dev/null
+++ b/src/3rdparty/libpng/CHANGES
@@ -0,0 +1,2469 @@
+#if 0
+libpng_changes(){ /*
+CHANGES - changes for libpng
+
+version 0.2
+ added reader into png.h
+ fixed small problems in stub file
+
+version 0.3
+ added pull reader
+ split up pngwrite.c to several files
+ added pnglib.txt
+ added example.c
+ cleaned up writer, adding a few new transformations
+ fixed some bugs in writer
+ interfaced with zlib 0.5
+ added K&R support
+ added check for 64 KB blocks for 16 bit machines
+
+version 0.4
+ cleaned up code and commented code
+ simplified time handling into png_time
+ created png_color_16 and png_color_8 to handle color needs
+ cleaned up color type defines
+ fixed various bugs
+ made various names more consistent
+ interfaced with zlib 0.71
+ cleaned up zTXt reader and writer (using zlib's Reset functions)
+ split transformations into pngrtran.c and pngwtran.c
+
+version 0.5
+ interfaced with zlib 0.8
+ fixed many reading and writing bugs
+ saved using 3 spaces instead of tabs
+
+version 0.6
+ added png_large_malloc() and png_large_free()
+ added png_size_t
+ cleaned up some compiler warnings
+ added png_start_read_image()
+
+version 0.7
+ cleaned up lots of bugs
+ finished dithering and other stuff
+ added test program
+ changed name from pnglib to libpng
+
+version 0.71 [June, 1995]
+ changed pngtest.png for zlib 0.93
+ fixed error in libpng.txt and example.c
+
+version 0.8
+ cleaned up some bugs
+ added png_set_filler()
+ split up pngstub.c into pngmem.c, pngio.c, and pngerror.c
+ added #define's to remove unwanted code
+ moved png_info_init() to png.c
+ added old_size into png_realloc()
+ added functions to manually set filtering and compression info
+ changed compression parameters based on image type
+ optimized filter selection code
+ added version info
+ changed external functions passing floats to doubles (k&r problems?)
+ put all the configurable stuff in pngconf.h
+ enabled png_set_shift to work with paletted images on read
+ added png_read_update_info() - updates info structure with
+ transformations
+
+version 0.81 [August, 1995]
+ incorporated Tim Wegner's medium model code (thanks, Tim)
+
+version 0.82 [September, 1995]
+ [unspecified changes]
+
+version 0.85 [December, 1995]
+ added more medium model code (almost everything's a far)
+ added i/o, error, and memory callback functions
+ fixed some bugs (16 bit, 4 bit interlaced, etc.)
+ added first run progressive reader (barely tested)
+
+version 0.86 [January, 1996]
+ fixed bugs
+ improved documentation
+
+version 0.87 [January, 1996]
+ fixed medium model bugs
+ fixed other bugs introduced in 0.85 and 0.86
+ added some minor documentation
+
+version 0.88 [January, 1996]
+ fixed progressive bugs
+ replaced tabs with spaces
+ cleaned up documentation
+ added callbacks for read/write and warning/error functions
+
+version 0.89 [July, 1996]
+ added new initialization API to make libpng work better with shared libs
+ we now have png_create_read_struct(), png_create_write_struct(),
+ png_create_info_struct(), png_destroy_read_struct(), and
+ png_destroy_write_struct() instead of the separate calls to
+ malloc and png_read_init(), png_info_init(), and png_write_init()
+ changed warning/error callback functions to fix bug - this means you
+ should use the new initialization API if you were using the old
+ png_set_message_fn() calls, and that the old API no longer exists
+ so that people are aware that they need to change their code
+ changed filter selection API to allow selection of multiple filters
+ since it didn't work in previous versions of libpng anyways
+ optimized filter selection code
+ fixed png_set_background() to allow using an arbitrary RGB color for
+ paletted images
+ fixed gamma and background correction for paletted images, so
+ png_correct_palette is not needed unless you are correcting an
+ external palette (you will need to #define PNG_CORRECT_PALETTE_SUPPORTED
+ in pngconf.h) - if nobody uses this, it may disappear in the future.
+ fixed bug with Borland 64K memory allocation (Alexander Lehmann)
+ fixed bug in interlace handling (Smarasderagd, I think)
+ added more error checking for writing and image to reduce invalid files
+ separated read and write functions so that they won't both be linked
+ into a binary when only reading or writing functionality is used
+ new pngtest image also has interlacing and zTXt
+ updated documentation to reflect new API
+
+version 0.90 [January, 1997]
+ made CRC errors/warnings on critical and ancillary chunks configurable
+ libpng will use the zlib CRC routines by (compile-time) default
+ changed DOS small/medium model memory support - needs zlib 1.04 (Tim Wegner)
+ added external C++ wrapper statements to png.h (Gilles Dauphin)
+ allow PNG file to be read when some or all of file signature has already
+ been read from the beginning of the stream. ****This affects the size
+ of info_struct and invalidates all programs that use a shared libpng****
+ fixed png_filler() declarations
+ fixed? background color conversions
+ fixed order of error function pointers to match documentation
+ current chunk name is now available in png_struct to reduce the number
+ of nearly identical error messages (will simplify multi-lingual
+ support when available)
+ try to get ready for unknown-chunk callback functions:
+ - previously read critical chunks are flagged, so the chunk handling
+ routines can determine if the chunk is in the right place
+ - all chunk handling routines have the same prototypes, so we will
+ be able to handle all chunks via a callback mechanism
+ try to fix Linux "setjmp" buffer size problems
+ removed png_large_malloc, png_large_free, and png_realloc functions.
+
+version 0.95 [March, 1997]
+ fixed bug in pngwutil.c allocating "up_row" twice and "avg_row" never
+ fixed bug in PNG file signature compares when start != 0
+ changed parameter type of png_set_filler(...filler...) from png_byte
+ to png_uint_32
+ added test for MACOS to ensure that both math.h and fp.h are not #included
+ added macros for libpng to be compiled as a Windows DLL (Andreas Kupries)
+ added "packswap" transformation, which changes the endianness of
+ packed-pixel bytes (Kevin Bracey)
+ added "strip_alpha" transformation, which removes the alpha channel of
+ input images without using it (not necessarily a good idea)
+ added "swap_alpha" transformation, which puts the alpha channel in front
+ of the color bytes instead of after
+ removed all implicit variable tests which assume NULL == 0 (I think)
+ changed several variables to "png_size_t" to show 16/32-bit limitations
+ added new pCAL chunk read/write support
+ added experimental filter selection weighting (Greg Roelofs)
+ removed old png_set_rgbx() and png_set_xrgb() functions that have been
+ obsolete for about 2 years now (use png_set_filler() instead)
+ added macros to read 16- and 32-bit ints directly from buffer, to be
+ used only on those systems that support it (namely PowerPC and 680x0)
+ With some testing, this may become the default for MACOS/PPC systems.
+ only calculate CRC on data if we are going to use it
+ added macros for zTXt compression type PNG_zTXt_COMPRESSION_???
+ added macros for simple libpng debugging output selectable at compile time
+ removed PNG_READ_END_MODE in progressive reader (Smarasderagd)
+ more description of info_struct in libpng.txt and png.h
+ more instructions in example.c
+ more chunk types tested in pngtest.c
+ renamed pngrcb.c to pngset.c, and all png_read_<chunk> functions to be
+ png_set_<chunk>. We now have corresponding png_get_<chunk>
+ functions in pngget.c to get information in info_ptr. This isolates
+ the application from the internal organization of png_info_struct
+ (good for shared library implementations).
+
+version 0.96 [May, 1997]
+ fixed serious bug with < 8bpp images introduced in 0.95
+ fixed 256-color transparency bug (Greg Roelofs)
+ fixed up documentation (Greg Roelofs, Laszlo Nyul)
+ fixed "error" in pngconf.h for Linux setjmp() behaviour
+ fixed DOS medium model support (Tim Wegner)
+ fixed png_check_keyword() for case with error in static string text
+ added read of CRC after IEND chunk for embedded PNGs (Laszlo Nyul)
+ added typecasts to quiet compiler errors
+ added more debugging info
+
+version 0.97 [January, 1998]
+ removed PNG_USE_OWN_CRC capability
+ relocated png_set_crc_action from pngrutil.c to pngrtran.c
+ fixed typecasts of "new_key", etc. (Andreas Dilger)
+ added RFC 1152 [sic] date support
+ fixed bug in gamma handling of 4-bit grayscale
+ added 2-bit grayscale gamma handling (Glenn R-P)
+ added more typecasts. 65536L becomes (png_uint_32)65536L, etc. (Glenn R-P)
+ minor corrections in libpng.txt
+ added simple sRGB support (Glenn R-P)
+ easier conditional compiling, e.g. define PNG_READ/WRITE_NOT_FULLY_SUPPORTED;
+ all configurable options can be selected from command-line instead
+ of having to edit pngconf.h (Glenn R-P)
+ fixed memory leak in pngwrite.c (free info_ptr->text) (Glenn R-P)
+ added more conditions for png_do_background, to avoid changing
+ black pixels to background when a background is supplied and
+ no pixels are transparent
+ repaired PNG_NO_STDIO behaviour
+ tested NODIV support and made it default behaviour (Greg Roelofs)
+ added "-m" option and PNGTEST_DEBUG_MEMORY to pngtest (John Bowler)
+ regularized version numbering scheme and bumped shared-library major
+ version number to 2 to avoid problems with libpng 0.89 apps (Greg Roelofs)
+
+version 0.98 [January, 1998]
+ cleaned up some typos in libpng.txt and in code documentation
+ fixed memory leaks in pCAL chunk processing (Glenn R-P and John Bowler)
+ cosmetic change "display_gamma" to "screen_gamma" in pngrtran.c
+ changed recommendation about file_gamma for PC images to .51 from .45,
+ in example.c and libpng.txt, added comments to distinguish between
+ screen_gamma, viewing_gamma, and display_gamma.
+ changed all references to RFC1152 to read RFC1123 and changed the
+ PNG_TIME_RFC1152_SUPPORTED macro to PNG_TIME_RFC1123_SUPPORTED
+ added png_invert_alpha capability (Glenn R-P -- suggestion by Jon Vincent)
+ changed srgb_intent from png_byte to int to avoid compiler bugs
+
+version 0.99 [January 30, 1998]
+ free info_ptr->text instead of end_info_ptr->text in pngread.c (John Bowler)
+ fixed a longstanding "packswap" bug in pngtrans.c
+ fixed some inconsistencies in pngconf.h that prevented compiling with
+ PNG_READ_GAMMA_SUPPORTED and PNG_READ_hIST_SUPPORTED undefined
+ fixed some typos and made other minor rearrangement of libpng.txt (Andreas)
+ changed recommendation about file_gamma for PC images to .50 from .51 in
+ example.c and libpng.txt, and changed file_gamma for sRGB images to .45
+ added a number of functions to access information from the png structure
+ png_get_image_height(), etc. (Glenn R-P, suggestion by Brad Pettit)
+ added TARGET_MACOS similar to zlib-1.0.8
+ define PNG_ALWAYS_EXTERN when __MWERKS__ && WIN32 are defined
+ added type casting to all png_malloc() function calls
+version 0.99a [January 31, 1998]
+ Added type casts and parentheses to all returns that return a value.(Tim W.)
+version 0.99b [February 4, 1998]
+ Added type cast png_uint_32 on malloc function calls where needed.
+ Changed type of num_hist from png_uint_32 to int (same as num_palette).
+ Added checks for rowbytes overflow, in case png_size_t is less than 32 bits.
+ Renamed makefile.elf to makefile.lnx.
+version 0.99c [February 7, 1998]
+ More type casting. Removed erroneous overflow test in pngmem.c.
+ Added png_buffered_memcpy() and png_buffered_memset(), apply them to rowbytes.
+ Added UNIX manual pages libpng.3 (incorporating libpng.txt) and png.5.
+version 0.99d [February 11, 1998]
+ Renamed "far_to_near()" "png_far_to_near()"
+ Revised libpng.3
+ Version 99c "buffered" operations didn't work as intended. Replaced them
+ with png_memcpy_check() and png_memset_check().
+ Added many "if (png_ptr == NULL) return" to quell compiler warnings about
+ unused png_ptr, mostly in pngget.c and pngset.c.
+ Check for overlength tRNS chunk present when indexed-color PLTE is read.
+ Cleaned up spelling errors in libpng.3/libpng.txt
+ Corrected a problem with png_get_tRNS() which returned undefined trans array
+version 0.99e [February 28, 1998]
+ Corrected png_get_tRNS() again.
+ Add parentheses for easier reading of pngget.c, fixed "||" should be "&&".
+ Touched up example.c to make more of it compileable, although the entire
+ file still can't be compiled (Willem van Schaik)
+ Fixed a bug in png_do_shift() (Bryan Tsai)
+ Added a space in png.h prototype for png_write_chunk_start()
+ Replaced pngtest.png with one created with zlib 1.1.1
+ Changed pngtest to report PASS even when file size is different (Jean-loup G.)
+ Corrected some logic errors in png_do_invert_alpha() (Chris Patterson)
+version 0.99f [March 5, 1998]
+ Corrected a bug in pngpread() introduced in version 99c (Kevin Bracey)
+ Moved makefiles into a "scripts" directory, and added INSTALL instruction file
+ Added makefile.os2 and pngos2.def (A. Zabolotny) and makefile.s2x (W. Sebok)
+ Added pointers to "note on libpng versions" in makefile.lnx and README
+ Added row callback feature when reading and writing nonprogressive rows
+ and added a test of this feature in pngtest.c
+ Added user transform callbacks, with test of the feature in pngtest.c
+version 0.99g [March 6, 1998, morning]
+ Minor changes to pngtest.c to suppress compiler warnings.
+ Removed "beta" language from documentation.
+version 0.99h [March 6, 1998, evening]
+ Minor changes to previous minor changes to pngtest.c
+ Changed PNG_READ_NOT_FULLY_SUPPORTED to PNG_READ_TRANSFORMS_NOT_SUPPORTED
+ and added PNG_PROGRESSIVE_READ_NOT_SUPPORTED macro
+ Added user transform capability
+
+version 1.00 [March 7, 1998]
+ Changed several typedefs in pngrutil.c
+ Added makefile.wat (Pawel Mrochen), updated makefile.tc3 (Willem van Schaik)
+ replaced "while(1)" with "for(;;)"
+ added PNGARG() to prototypes in pngtest.c and removed some prototypes
+ updated some of the makefiles (Tom Lane)
+ changed some typedefs (s_start, etc.) in pngrutil.c
+ fixed dimensions of "short_months" array in pngwrite.c
+ Replaced ansi2knr.c with the one from jpeg-v6
+
+version 1.0.0 [March 8, 1998]
+ Changed name from 1.00 to 1.0.0 (Adam Costello)
+ Added smakefile.ppc (with SCOPTIONS.ppc) for Amiga PPC (Andreas Kleinert)
+version 1.0.0a [March 9, 1998]
+ Fixed three bugs in pngrtran.c to make gamma+background handling consistent
+ (Greg Roelofs)
+ Changed format of the PNG_LIBPNG_VER integer to xyyzz instead of xyz
+ for major, minor, and bugfix releases. This is 10001. (Adam Costello,
+ Tom Lane)
+ Make months range from 1-12 in png_convert_to_rfc1123
+version 1.0.0b [March 13, 1998]
+ Quieted compiler complaints about two empty "for" loops in pngrutil.c
+ Minor changes to makefile.s2x
+ Removed #ifdef/#endif around a png_free() in pngread.c
+
+version 1.0.1 [March 14, 1998]
+ Changed makefile.s2x to reduce security risk of using a relative pathname
+ Fixed some typos in the documentation (Greg).
+ Fixed a problem with value of "channels" returned by png_read_update_info()
+version 1.0.1a [April 21, 1998]
+ Optimized Paeth calculations by replacing abs() function calls with intrinsics
+ plus other loop optimizations. Improves avg decoding speed by about 20%.
+ Commented out i386istic "align" compiler flags in makefile.lnx.
+ Reduced the default warning level in some makefiles, to make them consistent.
+ Removed references to IJG and JPEG in the ansi2knr.c copyright statement.
+ Fixed a bug in png_do_strip_filler with XXRRGGBB => RRGGBB transformation.
+ Added grayscale and 16-bit capability to png_do_read_filler().
+ Fixed a bug in pngset.c, introduced in version 0.99c, that sets rowbytes
+ too large when writing an image with bit_depth < 8 (Bob Dellaca).
+ Corrected some bugs in the experimental weighted filtering heuristics.
+ Moved a misplaced pngrutil code block that truncates tRNS if it has more
+ than num_palette entries -- test was done before num_palette was defined.
+ Fixed a png_convert_to_rfc1123() bug that converts day 31 to 0 (Steve Eddins).
+ Changed compiler flags in makefile.wat for better optimization (Pawel Mrochen).
+version 1.0.1b [May 2, 1998]
+ Relocated png_do_gray_to_rgb() within png_do_read_transformations() (Greg).
+ Relocated the png_composite macros from pngrtran.c to png.h (Greg).
+ Added makefile.sco (contributed by Mike Hopkirk).
+ Fixed two bugs (missing definitions of "istop") introduced in libpng-1.0.1a.
+ Fixed a bug in pngrtran.c that would set channels=5 under some circumstances.
+ More work on the Paeth-filtering, achieving imperceptible speedup (A Kleinert).
+ More work on loop optimization which may help when compiled with C++ compilers.
+ Added warnings when people try to use transforms they've defined out.
+ Collapsed 4 "i" and "c" loops into single "i" loops in pngrtran and pngwtran.
+ Revised paragraph about png_set_expand() in libpng.txt and libpng.3 (Greg)
+version 1.0.1c [May 11, 1998]
+ Fixed a bug in pngrtran.c (introduced in libpng-1.0.1a) where the masks for
+ filler bytes should have been 0xff instead of 0xf.
+ Added max_pixel_depth=32 in pngrutil.c when using FILLER with palette images.
+ Moved PNG_WRITE_WEIGHTED_FILTER_SUPPORTED and PNG_WRITE_FLUSH_SUPPORTED
+ out of the PNG_WRITE_TRANSFORMS_NOT_SUPPORTED block of pngconf.h
+ Added "PNG_NO_WRITE_TRANSFORMS" etc., as alternatives for *_NOT_SUPPORTED,
+ for consistency, in pngconf.h
+ Added individual "ifndef PNG_NO_[CAPABILITY]" in pngconf.h to make it easier
+ to remove unwanted capabilities via the compile line
+ Made some corrections to grammar (which, it's) in documentation (Greg).
+ Corrected example.c, use of row_pointers in png_write_image().
+version 1.0.1d [May 24, 1998]
+ Corrected several statements that used side effects illegally in pngrutil.c
+ and pngtrans.c, that were introduced in version 1.0.1b
+ Revised png_read_rows() to avoid repeated if-testing for NULL (A Kleinert)
+ More corrections to example.c, use of row_pointers in png_write_image()
+ and png_read_rows().
+ Added pngdll.mak and pngdef.pas to scripts directory, contributed by
+ Bob Dellaca, to make a png32bd.dll with Borland C++ 4.5
+ Fixed error in example.c with png_set_text: num_text is 3, not 2 (Guido V.)
+ Changed several loops from count-down to count-up, for consistency.
+version 1.0.1e [June 6, 1998]
+ Revised libpng.txt and libpng.3 description of png_set_read|write_fn(), and
+ added warnings when people try to set png_read_fn and png_write_fn in
+ the same structure.
+ Added a test such that png_do_gamma will be done when num_trans==0
+ for truecolor images that have defined a background. This corrects an
+ error that was introduced in libpng-0.90 that can cause gamma processing
+ to be skipped.
+ Added tests in png.h to include "trans" and "trans_values" in structures
+ when PNG_READ_BACKGROUND_SUPPORTED or PNG_READ_EXPAND_SUPPORTED is defined.
+ Add png_free(png_ptr->time_buffer) in png_destroy_read_struct()
+ Moved png_convert_to_rfc_1123() from pngwrite.c to png.c
+ Added capability for user-provided malloc_fn() and free_fn() functions,
+ and revised pngtest.c to demonstrate their use, replacing the
+ PNGTEST_DEBUG_MEM feature.
+ Added makefile.w32, for Microsoft C++ 4.0 and later (Tim Wegner).
+
+version 1.0.2 [June 14, 1998]
+ Fixed two bugs in makefile.bor .
+version 1.0.2a [December 30, 1998]
+ Replaced and extended code that was removed from png_set_filler() in 1.0.1a.
+ Fixed a bug in png_do_filler() that made it fail to write filler bytes in
+ the left-most pixel of each row (Kevin Bracey).
+ Changed "static pngcharp tIME_string" to "static char tIME_string[30]"
+ in pngtest.c (Duncan Simpson).
+ Fixed a bug in pngtest.c that caused pngtest to try to write a tIME chunk
+ even when no tIME chunk was present in the source file.
+ Fixed a problem in pngrutil.c: gray_to_rgb didn't always work with 16-bit.
+ Fixed a problem in png_read_push_finish_row(), which would not skip some
+ passes that it should skip, for images that are less than 3 pixels high.
+ Interchanged the order of calls to png_do_swap() and png_do_shift()
+ in pngwtran.c (John Cromer).
+ Added #ifdef PNG_DEBUG/#endif surrounding use of PNG_DEBUG in png.h .
+ Changed "bad adaptive filter type" from error to warning in pngrutil.c .
+ Fixed a documentation error about default filtering with 8-bit indexed-color.
+ Separated the PNG_NO_STDIO macro into PNG_NO_STDIO and PNG_NO_CONSOLE_IO
+ (L. Peter Deutsch).
+ Added png_set_rgb_to_gray() and png_get_rgb_to_gray_status() functions.
+ Added png_get_copyright() and png_get_header_version() functions.
+ Revised comments on png_set_progressive_read_fn() in libpng.txt and example.c
+ Added information about debugging in libpng.txt and libpng.3 .
+ Changed "ln -sf" to "ln -s -f" in makefile.s2x, makefile.lnx, and makefile.sco.
+ Removed lines after Dynamic Dependencies" in makefile.aco .
+ Revised makefile.dec to make a shared library (Jeremie Petit).
+ Removed trailing blanks from all files.
+version 1.0.2a [January 6, 1999]
+ Removed misplaced #endif and #ifdef PNG_NO_EXTERN near the end of png.h
+ Added "if" tests to silence complaints about unused png_ptr in png.h and png.c
+ Changed "check_if_png" function in example.c to return true (nonzero) if PNG.
+ Changed libpng.txt to demonstrate png_sig_cmp() instead of png_check_sig()
+ which is obsolete.
+
+version 1.0.3 [January 14, 1999]
+ Added makefile.hux, for Hewlett Packard HPUX 10.20 and 11.00 (Jim Rice)
+ Added a statement of Y2K compliance in png.h, libpng.3, and Y2KINFO.
+version 1.0.3a [August 12, 1999]
+ Added check for PNG_READ_INTERLACE_SUPPORTED in pngread.c; issue a warning
+ if an attempt is made to read an interlaced image when it's not supported.
+ Added check if png_ptr->trans is defined before freeing it in pngread.c
+ Modified the Y2K statement to include versions back to version 0.71
+ Fixed a bug in the check for valid IHDR bit_depth/color_types in pngrutil.c
+ Modified makefile.wat (added -zp8 flag, ".symbolic", changed some comments)
+ Replaced leading blanks with tab characters in makefile.hux
+ Changed "dworkin.wustl.edu" to "ccrc.wustl.edu" in various documents.
+ Changed (float)red and (float)green to (double)red, (double)green
+ in png_set_rgb_to_gray() to avoid "promotion" problems in AIX.
+ Fixed a bug in pngconf.h that omitted <stdio.h> when PNG_DEBUG==0 (K Bracey).
+ Reformatted libpng.3 and libpngpf.3 with proper fonts (script by J. vanZandt).
+ Updated documentation to refer to the PNG-1.2 specification.
+ Removed ansi2knr.c and left pointers to the latest source for ansi2knr.c
+ in makefile.knr, INSTALL, and README (L. Peter Deutsch)
+ Fixed bugs in calculation of the length of rowbytes when adding alpha
+ channels to 16-bit images, in pngrtran.c (Chris Nokleberg)
+ Added function png_set_user_transform_info() to store user_transform_ptr,
+ user_depth, and user_channels into the png_struct, and a function
+ png_get_user_transform_ptr() to retrieve the pointer (Chris Nokleberg)
+ Added function png_set_empty_plte_permitted() to make libpng useable
+ in MNG applications.
+ Corrected the typedef for png_free_ptr in png.h (Jesse Jones).
+ Correct gamma with srgb is 45455 instead of 45000 in pngrutil.c, to be
+ consistent with PNG-1.2, and allow variance of 500 before complaining.
+ Added assembler code contributed by Intel in file pngvcrd.c and modified
+ makefile.w32 to use it (Nirav Chhatrapati, INTEL Corporation, Gilles Vollant)
+ Changed "ln -s -f" to "ln -f -s" in the makefiles to make Solaris happy.
+ Added some aliases for png_set_expand() in pngrtran.c, namely
+ png_set_expand_PLTE(), png_set_expand_depth(), and png_set_expand_tRNS()
+ (Greg Roelofs, in "PNG: The Definitive Guide").
+ Added makefile.beo for BEOS on X86, contributed by Sander Stok.
+version 1.0.3b [August 26, 1999]
+ Replaced 2147483647L several places with PNG_MAX_UINT macro, defined in png.h
+ Changed leading blanks to tabs in all makefiles.
+ Define PNG_USE_PNGVCRD in makefile.w32, to get MMX assembler code.
+ Made alternate versions of png_set_expand() in pngrtran.c, namely
+ png_set_gray_1_2_4_to_8, png_set_palette_to_rgb, and png_set_tRNS_to_alpha
+ (Greg Roelofs, in "PNG: The Definitive Guide"). Deleted the 1.0.3a aliases.
+ Relocated start of 'extern "C"' block in png.h so it doesn't include pngconf.h
+ Revised calculation of num_blocks in pngmem.c to avoid a potentially
+ negative shift distance, whose results are undefined in the C language.
+ Added a check in pngset.c to prevent writing multiple tIME chunks.
+ Added a check in pngwrite.c to detect invalid small window_bits sizes.
+version 1.0.3d [September 4, 1999]
+ Fixed type casting of igamma in pngrutil.c
+ Added new png_expand functions to scripts/pngdef.pas and pngos2.def
+ Added a demo read_user_transform_fn that examines the row filters in pngtest.c
+
+version 1.0.4 [September 24, 1999]
+ Define PNG_ALWAYS_EXTERN in pngconf.h if __STDC__ is defined
+ Delete #define PNG_INTERNAL and include "png.h" from pngasmrd.h
+ Made several minor corrections to pngtest.c
+ Renamed the makefiles with longer but more user friendly extensions.
+ Copied the PNG copyright and license to a separate LICENSE file.
+ Revised documentation, png.h, and example.c to remove reference to
+ "viewing_gamma" which no longer appears in the PNG specification.
+ Revised pngvcrd.c to use MMX code for interlacing only on the final pass.
+ Updated pngvcrd.c to use the faster C filter algorithms from libpng-1.0.1a
+ Split makefile.win32vc into two versions, makefile.vcawin32 (uses MMX
+ assembler code) and makefile.vcwin32 (doesn't).
+ Added a CPU timing report to pngtest.c (enabled by defining PNGTEST_TIMING)
+ Added a copy of pngnow.png to the distribution.
+version 1.0.4a [September 25, 1999]
+ Increase max_pixel_depth in pngrutil.c if a user transform needs it.
+ Changed several division operations to right-shifts in pngvcrd.c
+version 1.0.4b [September 30, 1999]
+ Added parentheses in line 3732 of pngvcrd.c
+ Added a comment in makefile.linux warning about buggy -O3 in pgcc 2.95.1
+version 1.0.4c [October 1, 1999]
+ Added a "png_check_version" function in png.c and pngtest.c that will generate
+ a helpful compiler error if an old png.h is found in the search path.
+ Changed type of png_user_transform_depth|channels from int to png_byte.
+version 1.0.4d [October 6, 1999]
+ Changed 0.45 to 0.45455 in png_set_sRGB()
+ Removed unused PLTE entries from pngnow.png
+ Re-enabled some parts of pngvcrd.c (png_combine_row) that work properly.
+version 1.0.4e [October 10, 1999]
+ Fixed sign error in pngvcrd.c (Greg Roelofs)
+ Replaced some instances of memcpy with simple assignments in pngvcrd (GR-P)
+version 1.0.4f [October 15, 1999]
+ Surrounded example.c code with #if 0 .. #endif to prevent people from
+ inadvertently trying to compile it.
+ Changed png_get_header_version() from a function to a macro in png.h
+ Added type casting mostly in pngrtran.c and pngwtran.c
+ Removed some pointless "ptr = NULL" in pngmem.c
+ Added a "contrib" directory containing the source code from Greg's book.
+
+version 1.0.5 [October 15, 1999]
+ Minor editing of the INSTALL and README files.
+version 1.0.5a [October 23, 1999]
+ Added contrib/pngsuite and contrib/pngminus (Willem van Schaik)
+ Fixed a typo in the png_set_sRGB() function call in example.c (Jan Nijtmans)
+ Further optimization and bugfix of pngvcrd.c
+ Revised pngset.c so that it does not allocate or free memory in the user's
+ text_ptr structure. Instead, it makes its own copy.
+ Created separate write_end_info_struct in pngtest.c for a more severe test.
+ Added code in pngwrite.c to free info_ptr->text[i].key to stop a memory leak.
+version 1.0.5b [November 23, 1999]
+ Moved PNG_FLAG_HAVE_CHUNK_HEADER, PNG_FLAG_BACKGROUND_IS_GRAY and
+ PNG_FLAG_WROTE_tIME from flags to mode.
+ Added png_write_info_before_PLTE() function.
+ Fixed some typecasting in contrib/gregbook/*.c
+ Updated scripts/makevms.com and added makevms.com to contrib/gregbook
+ and contrib/pngminus (Martin Zinser)
+version 1.0.5c [November 26, 1999]
+ Moved png_get_header_version from png.h to png.c, to accommodate ansi2knr.
+ Removed all global arrays (according to PNG_NO_GLOBAL_ARRAYS macro), to
+ accommodate making DLL's: Moved usr_png_ver from global variable to function
+ png_get_header_ver() in png.c. Moved png_sig to png_sig_bytes in png.c and
+ eliminated use of png_sig in pngwutil.c. Moved the various png_CHNK arrays
+ into pngtypes.h. Eliminated use of global png_pass arrays. Declared the
+ png_CHNK and png_pass arrays to be "const". Made the global arrays
+ available to applications (although none are used in libpng itself) when
+ PNG_NO_GLOBAL_ARRAYS is not defined or when PNG_GLOBAL_ARRAYS is defined.
+ Removed some extraneous "-I" from contrib/pngminus/makefile.std
+ Changed the PNG_sRGB_INTENT macros in png.h to be consistent with PNG-1.2.
+ Change PNG_SRGB_INTENT to PNG_sRGB_INTENT in libpng.txt and libpng.3
+version 1.0.5d [November 29, 1999]
+ Add type cast (png_const_charp) two places in png.c
+ Eliminated pngtypes.h; use macros instead to declare PNG_CHNK arrays.
+ Renamed "PNG_GLOBAL_ARRAYS" to "PNG_USE_GLOBAL_ARRAYS" and made available
+ to applications a macro "PNG_USE_LOCAL_ARRAYS".
+ comment out (with #ifdef) all the new declarations when
+ PNG_USE_GLOBAL_ARRAYS is defined.
+ Added PNG_EXPORT_VAR macro to accommodate making DLL's.
+version 1.0.5e [November 30, 1999]
+ Added iCCP, iTXt, and sPLT support; added "lang" member to the png_text
+ structure; refactored the inflate/deflate support to make adding new chunks
+ with trailing compressed parts easier in the future, and added new functions
+ png_free_iCCP, png_free_pCAL, png_free_sPLT, png_free_text, png_get_iCCP,
+ png_get_spalettes, png_set_iCCP, png_set_spalettes (Eric S. Raymond).
+ NOTE: Applications that write text chunks MUST define png_text->lang
+ before calling png_set_text(). It must be set to NULL if you want to
+ write tEXt or zTXt chunks. If you want your application to be able to
+ run with older versions of libpng, use
+
+ #ifdef PNG_iTXt_SUPPORTED
+ png_text[i].lang = NULL;
+ #endif
+
+ Changed png_get_oFFs() and png_set_oFFs() to use signed rather than unsigned
+ offsets (Eric S. Raymond).
+ Combined PNG_READ_cHNK_SUPPORTED and PNG_WRITE_cHNK_SUPPORTED macros into
+ PNG_cHNK_SUPPORTED and combined the three types of PNG_text_SUPPORTED
+ macros, leaving the separate macros also available.
+ Removed comments on #endifs at the end of many short, non-nested #if-blocks.
+version 1.0.5f [December 6, 1999]
+ Changed makefile.solaris to issue a warning about potential problems when
+ the ucb "ld" is in the path ahead of the ccs "ld".
+ Removed "- [date]" from the "synopsis" line in libpng.3 and libpngpf.3.
+ Added sCAL chunk support (Eric S. Raymond).
+version 1.0.5g [December 7, 1999]
+ Fixed "png_free_spallettes" typo in png.h
+ Added code to handle new chunks in pngpread.c
+ Moved PNG_CHNK string macro definitions outside of PNG_NO_EXTERN block
+ Added "translated_key" to png_text structure and png_write_iTXt().
+ Added code in pngwrite.c to work around a newly discovered zlib bug.
+version 1.0.5h [December 10, 1999]
+ NOTE: regarding the note for version 1.0.5e, the following must also
+ be included in your code:
+ png_text[i].translated_key = NULL;
+ Unknown chunk handling is now supported.
+ Option to eliminate all floating point support was added. Some new
+ fixed-point functions such as png_set_gAMA_fixed() were added.
+ Expanded tabs and removed trailing blanks in source files.
+version 1.0.5i [December 13, 1999]
+ Added some type casts to silence compiler warnings.
+ Renamed "png_free_spalette" to "png_free_spalettes" for consistency.
+ Removed leading blanks from a #define in pngvcrd.c
+ Added some parameters to the new png_set_keep_unknown_chunks() function.
+ Added a test for up->location != 0 in the first instance of writing
+ unknown chunks in pngwrite.c
+ Changed "num" to "i" in png_free_spalettes() and png_free_unknowns() to
+ prevent recursion.
+ Added png_free_hIST() function.
+ Various patches to fix bugs in the sCAL and integer cHRM processing,
+ and to add some convenience macros for use with sCAL.
+version 1.0.5j [December 21, 1999]
+ Changed "unit" parameter of png_write_sCAL from png_byte to int, to work
+ around buggy compilers.
+ Added new type "png_fixed_point" for integers that hold float*100000 values
+ Restored backward compatibility of tEXt/zTXt chunk processing:
+ Restored the first four members of png_text to the same order as v.1.0.5d.
+ Added members "lang_key" and "itxt_length" to png_text struct. Set
+ text_length=0 when "text" contains iTXt data. Use the "compression"
+ member to distinguish among tEXt/zTXt/iTXt types. Added
+ PNG_ITXT_COMPRESSION_NONE (1) and PNG_ITXT_COMPRESSION_zTXt(2) macros.
+ The "Note" above, about backward incompatibility of libpng-1.0.5e, no
+ longer applies.
+ Fixed png_read|write_iTXt() to read|write parameters in the right order,
+ and to write the iTXt chunk after IDAT if it appears in the end_ptr.
+ Added pnggccrd.c, version of pngvcrd.c Intel assembler for gcc (Greg Roelofs)
+ Reversed the order of trying to write floating-point and fixed-point gAMA.
+version 1.0.5k [December 27, 1999]
+ Added many parentheses, e.g., "if (a && b & c)" becomes "if (a && (b & c))"
+ Added png_handle_as_unknown() function (Glenn)
+ Added png_free_chunk_list() function and chunk_list and num_chunk_list members
+ of png_ptr.
+ Eliminated erroneous warnings about multiple sPLT chunks and sPLT-after-PLTE.
+ Fixed a libpng-1.0.5h bug in pngrutil.c that was issuing erroneous warnings
+ about ignoring incorrect gAMA with sRGB (gAMA was in fact not ignored)
+ Added png_free_tRNS(); png_set_tRNS() now malloc's its own trans array (ESR).
+ Define png_get_int_32 when oFFs chunk is supported as well as when pCAL is.
+ Changed type of proflen from png_int_32 to png_uint_32 in png_get_iCCP().
+version 1.0.5l [January 1, 2000]
+ Added functions png_set_read_user_chunk_fn() and png_get_user_chunk_ptr()
+ for setting a callback function to handle unknown chunks and for
+ retrieving the associated user pointer (Glenn).
+version 1.0.5m [January 7, 2000]
+ Added high-level functions png_read_png(), png_write_png(), png_free_pixels().
+version 1.0.5n [January 9, 2000]
+ Added png_free_PLTE() function, and modified png_set_PLTE() to malloc its
+ own memory for info_ptr->palette. This makes it safe for the calling
+ application to free its copy of the palette any time after it calls
+ png_set_PLTE().
+version 1.0.5o [January 20, 2000]
+ Cosmetic changes only (removed some trailing blanks and TABs)
+version 1.0.5p [January 31, 2000]
+ Renamed pngdll.mak to makefile.bd32
+ Cosmetic changes in pngtest.c
+version 1.0.5q [February 5, 2000]
+ Relocated the makefile.solaris warning about PATH problems.
+ Fixed pngvcrd.c bug by pushing/popping registers in mmxsupport (Bruce Oberg)
+ Revised makefile.gcmmx
+ Added PNG_SETJMP_SUPPORTED, PNG_SETJMP_NOT_SUPPORTED, and PNG_ABORT() macros
+version 1.0.5r [February 7, 2000]
+ Removed superfluous prototype for png_get_itxt from png.h
+ Fixed a bug in pngrtran.c that improperly expanded the background color.
+ Return *num_text=0 from png_get_text() when appropriate, and fix documentation
+ of png_get_text() in libpng.txt/libpng.3.
+version 1.0.5s [February 18, 2000]
+ Added "png_jmp_env()" macro to pngconf.h, to help people migrate to the
+ new error handler that's planned for the next libpng release, and changed
+ example.c, pngtest.c, and contrib programs to use this macro.
+ Revised some of the DLL-export macros in pngconf.h (Greg Roelofs)
+ Fixed a bug in png_read_png() that caused it to fail to expand some images
+ that it should have expanded.
+ Fixed some mistakes in the unused and undocumented INCH_CONVERSIONS functions
+ in pngget.c
+ Changed the allocation of palette, history, and trans arrays back to
+ the version 1.0.5 method (linking instead of copying) which restores
+ backward compatibility with version 1.0.5. Added some remarks about
+ that in example.c. Added "free_me" member to info_ptr and png_ptr
+ and added png_free_data() function.
+ Updated makefile.linux and makefile.gccmmx to make directories conditionally.
+ Made cosmetic changes to pngasmrd.h
+ Added png_set_rows() and png_get_rows(), for use with png_read|write_png().
+ Modified png_read_png() to allocate info_ptr->row_pointers only if it
+ hasn't already been allocated.
+version 1.0.5t [March 4, 2000]
+ Changed png_jmp_env() migration aiding macro to png_jmpbuf().
+ Fixed "interlace" typo (should be "interlaced") in contrib/gregbook/read2-x.c
+ Fixed bug with use of PNG_BEFORE_IHDR bit in png_ptr->mode, introduced when
+ PNG_FLAG_HAVE_CHUNK_HEADER was moved into png_ptr->mode in version 1.0.5b
+ Files in contrib/gregbook were revised to use png_jmpbuf() and to select
+ a 24-bit visual if one is available, and to allow abbreviated options.
+ Files in contrib/pngminus were revised to use the png_jmpbuf() macro.
+ Removed spaces in makefile.linux and makefile.gcmmx, introduced in 1.0.5s
+version 1.0.5u [March 5, 2000]
+ Simplified the code that detects old png.h in png.c and pngtest.c
+ Renamed png_spalette (_p, _pp) to png_sPLT_t (_tp, _tpp)
+ Increased precision of rgb_to_gray calculations from 8 to 15 bits and
+ added png_set_rgb_to_gray_fixed() function.
+ Added makefile.bc32 (32-bit Borland C++, C mode)
+version 1.0.5v [March 11, 2000]
+ Added some parentheses to the png_jmpbuf macro definition.
+ Updated references to the zlib home page, which has moved to freesoftware.com.
+ Corrected bugs in documentation regarding png_read_row() and png_write_row().
+ Updated documentation of png_rgb_to_gray calculations in libpng.3/libpng.txt.
+ Renamed makefile.borland,turboc3 back to makefile.bor,tc3 as in version 1.0.3,
+ revised borland makefiles; added makefile.ibmvac3 and makefile.gcc (Cosmin)
+
+version 1.0.6 [March 20, 2000]
+ Minor revisions of makefile.bor, libpng.txt, and gregbook/rpng2-win.c
+ Added makefile.sggcc (SGI IRIX with gcc)
+version 1.0.6d [April 7, 2000]
+ Changed sprintf() to strcpy() in png_write_sCAL_s() to work without STDIO
+ Added data_length parameter to png_decompress_chunk() function
+ Revised documentation to remove reference to abandoned png_free_chnk functions
+ Fixed an error in png_rgb_to_gray_fixed()
+ Revised example.c, usage of png_destroy_write_struct().
+ Renamed makefile.ibmvac3 to makefile.ibmc, added libpng.icc IBM project file
+ Added a check for info_ptr->free_me&PNG_FREE_TEXT when freeing text in png.c
+ Simplify png_sig_bytes() function to remove use of non-ISO-C strdup().
+version 1.0.6e [April 9, 2000]
+ Added png_data_freer() function.
+ In the code that checks for over-length tRNS chunks, added check of
+ info_ptr->num_trans as well as png_ptr->num_trans (Matthias Benckmann)
+ Minor revisions of libpng.txt/libpng.3.
+ Check for existing data and free it if the free_me flag is set, in png_set_*()
+ and png_handle_*().
+ Only define PNG_WEIGHTED_FILTERS_SUPPORTED when PNG_FLOATING_POINT_SUPPORTED
+ is defined.
+ Changed several instances of PNG_NO_CONSOLE_ID to PNG_NO_STDIO in pngrutil.c
+ and mentioned the purposes of the two macros in libpng.txt/libpng.3.
+version 1.0.6f [April 14, 2000]
+ Revised png_set_iCCP() and png_set_rows() to avoid prematurely freeing data.
+ Add checks in png_set_text() for NULL members of the input text structure.
+ Revised libpng.txt/libpng.3.
+ Removed superfluous prototype for png_set_itxt from png.h
+ Removed "else" from pngread.c, after png_error(), and changed "0" to "length".
+ Changed several png_errors about malformed ancillary chunks to png_warnings.
+version 1.0.6g [April 24, 2000]
+ Added png_pass-* arrays to pnggccrd.c when PNG_USE_LOCAL_ARRAYS is defined.
+ Relocated paragraph about png_set_background() in libpng.3/libpng.txt
+ and other revisions (Matthias Benckmann)
+ Relocated info_ptr->free_me, png_ptr->free_me, and other info_ptr and
+ png_ptr members to restore binary compatibility with libpng-1.0.5
+ (breaks compatibility with libpng-1.0.6).
+version 1.0.6h [April 24, 2000]
+ Changed shared library so-number pattern from 2.x.y.z to xy.z (this builds
+ libpng.so.10 & libpng.so.10.6h instead of libpng.so.2 & libpng.so.2.1.0.6h)
+ This is a temporary change for test purposes.
+version 1.0.6i [May 2, 2000]
+ Rearranged some members at the end of png_info and png_struct, to put
+ unknown_chunks_num and free_me within the original size of the png_structs
+ and free_me, png_read_user_fn, and png_free_fn within the original png_info,
+ because some old applications allocate the structs directly instead of
+ using png_create_*().
+ Added documentation of user memory functions in libpng.txt/libpng.3
+ Modified png_read_png so that it will use user_allocated row_pointers
+ if present, unless free_me directs that it be freed, and added description
+ of the use of png_set_rows() and png_get_rows() in libpng.txt/libpng.3.
+ Added PNG_LEGACY_SUPPORTED macro, and #ifdef out all new (since version
+ 1.00) members of png_struct and png_info, to regain binary compatibility
+ when you define this macro. Capabilities lost in this event
+ are user transforms (new in version 1.0.0),the user transform pointer
+ (new in version 1.0.2), rgb_to_gray (new in 1.0.5), iCCP, sCAL, sPLT,
+ the high-level interface, and unknown chunks support (all new in 1.0.6).
+ This was necessary because of old applications that allocate the structs
+ directly as authors were instructed to do in libpng-0.88 and earlier,
+ instead of using png_create_*().
+ Added modes PNG_CREATED_READ_STRUCT and PNG_CREATED_WRITE_STRUCT which
+ can be used to detect codes that directly allocate the structs, and
+ code to check these modes in png_read_init() and png_write_init() and
+ generate a libpng error if the modes aren't set and PNG_LEGACY_SUPPORTED
+ was not defined.
+ Added makefile.intel and updated makefile.watcom (Pawel Mrochen)
+version 1.0.6j [May 3, 2000]
+ Overloaded png_read_init() and png_write_init() with macros that convert
+ calls to png_read_init_2() or png_write_init_2() that check the version
+ and structure sizes.
+version 1.0.7beta11 [May 7, 2000]
+ Removed the new PNG_CREATED_READ_STRUCT and PNG_CREATED_WRITE_STRUCT modes
+ which are no longer used.
+ Eliminated the three new members of png_text when PNG_LEGACY_SUPPORTED is
+ defined or when neither PNG_READ_iTXt_SUPPORTED nor PNG_WRITE_iTXT_SUPPORTED
+ is defined.
+ Made PNG_NO_READ|WRITE_iTXt the default setting, to avoid memory
+ overrun when old applications fill the info_ptr->text structure directly.
+ Added PNGAPI macro, and added it to the definitions of all exported functions.
+ Relocated version macro definitions ahead of the includes of zlib.h and
+ pngconf.h in png.h.
+version 1.0.7beta12 [May 12, 2000]
+ Revised pngset.c to avoid a problem with expanding the png_debug macro.
+ Deleted some extraneous defines from pngconf.h
+ Made PNG_NO_CONSOLE_IO the default condition when PNG_BUILD_DLL is defined.
+ Use MSC _RPTn debugging instead of fprintf if _MSC_VER is defined.
+ Added png_access_version_number() function.
+ Check for mask&PNG_FREE_CHNK (for TEXT, SCAL, PCAL) in png_free_data().
+ Expanded libpng.3/libpng.txt information about png_data_freer().
+version 1.0.7beta14 [May 17, 2000] (beta13 was not published)
+ Changed pnggccrd.c and pngvcrd.c to handle bad adaptive filter types as
+ warnings instead of errors, as pngrutil.c does.
+ Set the PNG_INFO_IDAT valid flag in png_set_rows() so png_write_png()
+ will actually write IDATs.
+ Made the default PNG_USE_LOCAL_ARRAYS depend on PNG_DLL instead of WIN32.
+ Make png_free_data() ignore its final parameter except when freeing data
+ that can have multiple instances (text, sPLT, unknowns).
+ Fixed a new bug in png_set_rows().
+ Removed info_ptr->valid tests from png_free_data(), as in version 1.0.5.
+ Added png_set_invalid() function.
+ Fixed incorrect illustrations of png_destroy_write_struct() in example.c.
+version 1.0.7beta15 [May 30, 2000]
+ Revised the deliberately erroneous Linux setjmp code in pngconf.h to produce
+ fewer error messages.
+ Rearranged checks for Z_OK to check the most likely path first in pngpread.c
+ and pngwutil.c.
+ Added checks in pngtest.c for png_create_*() returning NULL, and mentioned
+ in libpng.txt/libpng.3 the need for applications to check this.
+ Changed names of png_default_*() functions in pngtest to pngtest_*().
+ Changed return type of png_get_x|y_offset_*() from png_uint_32 to png_int_32.
+ Fixed some bugs in the unused PNG_INCH_CONVERSIONS functions in pngget.c
+ Set each pointer to NULL after freeing it in png_free_data().
+ Worked around a problem in pngconf.h; AIX's strings.h defines an "index"
+ macro that conflicts with libpng's png_color_16.index. (Dimitri Papadapoulos)
+ Added "msvc" directory with MSVC++ project files (Simon-Pierre Cadieux).
+version 1.0.7beta16 [June 4, 2000]
+ Revised the workaround of AIX string.h "index" bug.
+ Added a check for overlength PLTE chunk in pngrutil.c.
+ Added PNG_NO_POINTER_INDEXING macro to use array-indexing instead of pointer
+ indexing in pngrutil.c and pngwutil.c to accommodate a buggy compiler.
+ Added a warning in png_decompress_chunk() when it runs out of data, e.g.
+ when it tries to read an erroneous PhotoShop iCCP chunk.
+ Added PNG_USE_DLL macro.
+ Revised the copyright/disclaimer/license notice.
+ Added contrib/msvctest directory
+version 1.0.7rc1 [June 9, 2000]
+ Corrected the definition of PNG_TRANSFORM_INVERT_ALPHA (0x0400 not 0x0200)
+ Added contrib/visupng directory (Willem van Schaik)
+version 1.0.7beta18 [June 23, 2000]
+ Revised PNGAPI definition, and pngvcrd.c to work with __GCC__
+ and do not redefine PNGAPI if it is passed in via a compiler directive.
+ Revised visupng/PngFile.c to remove returns from within the Try block.
+ Removed leading underscores from "_PNG_H" and "_PNG_SAVE_BSD_SOURCE" macros.
+ Updated contrib/visupng/cexcept.h to version 1.0.0.
+ Fixed bugs in pngwrite.c and pngwutil.c that prevented writing iCCP chunks.
+version 1.0.7rc2 [June 28, 2000]
+ Updated license to include disclaimers required by UCITA.
+ Fixed "DJBPP" typo in pnggccrd.c introduced in beta18.
+
+version 1.0.7 [July 1, 2000]
+ Revised the definition of "trans_values" in libpng.3/libpng.txt
+version 1.0.8beta1 [July 8, 2000]
+ Added png_free(png_ptr, key) two places in pngpread.c to stop memory leaks.
+ Changed PNG_NO_STDIO to PNG_NO_CONSOLE_IO, several places in pngrutil.c and
+ pngwutil.c.
+ Changed PNG_EXPORT_VAR to use PNG_IMPEXP, in pngconf.h.
+ Removed unused "#include <assert.h>" from png.c
+ Added WindowsCE support.
+ Revised pnggccrd.c to work with gcc-2.95.2 and in the Cygwin environment.
+version 1.0.8beta2 [July 10, 2000]
+ Added project files to the wince directory and made further revisions
+ of pngtest.c, pngrio.c, and pngwio.c in support of WindowsCE.
+version 1.0.8beta3 [July 11, 2000]
+ Only set the PNG_FLAG_FREE_TRNS or PNG_FREE_TRNS flag in png_handle_tRNS()
+ for indexed-color input files to avoid potential double-freeing trans array
+ under some unusual conditions; problem was introduced in version 1.0.6f.
+ Further revisions to pngtest.c and files in the wince subdirectory.
+version 1.0.8beta4 [July 14, 2000]
+ Added the files pngbar.png and pngbar.jpg to the distribution.
+ Added makefile.cygwin, and cygwin support in pngconf.h
+ Added PNG_NO_ZALLOC_ZERO macro (makes png_zalloc skip zeroing memory)
+version 1.0.8rc1 [July 16, 2000]
+ Revised png_debug() macros and statements to eliminate compiler warnings.
+
+version 1.0.8 [July 24, 2000]
+ Added png_flush() in pngwrite.c, after png_write_IEND().
+ Updated makefile.hpux to build a shared library.
+version 1.0.9beta1 [November 10, 2000]
+ Fixed typo in scripts/makefile.hpux
+ Updated makevms.com in scripts and contrib/* and contrib/* (Martin Zinser)
+ Fixed seqence-point bug in contrib/pngminus/png2pnm (Martin Zinser)
+ Changed "cdrom.com" in documentation to "libpng.org"
+ Revised pnggccrd.c to get it all working, and updated makefile.gcmmx (Greg).
+ Changed type of "params" from voidp to png_voidp in png_read|write_png().
+ Make sure PNGAPI and PNG_IMPEXP are defined in pngconf.h.
+ Revised the 3 instances of WRITEFILE in pngtest.c.
+ Relocated "msvc" and "wince" project subdirectories into "dll" subdirectory.
+ Updated png.rc in dll/msvc project
+ Revised makefile.dec to define and use LIBPATH and INCPATH
+ Increased size of global png_libpng_ver[] array from 12 to 18 chars.
+ Made global png_libpng_ver[], png_sig[] and png_pass_*[] arrays const.
+ Removed duplicate png_crc_finish() from png_handle_bKGD() function.
+ Added a warning when application calls png_read_update_info() multiple times.
+ Revised makefile.cygwin
+ Fixed bugs in iCCP support in pngrutil.c and pngwutil.c.
+ Replaced png_set_empty_plte_permitted() with png_permit_mng_features().
+version 1.0.9beta2 [November 19, 2000]
+ Renamed the "dll" subdirectory "projects".
+ Added borland project files to "projects" subdirectory.
+ Set VS_FF_PRERELEASE and VS_FF_PATCHED flags in msvc/png.rc when appropriate.
+ Add error message in png_set_compression_buffer_size() when malloc fails.
+version 1.0.9beta3 [November 23, 2000]
+ Revised PNG_LIBPNG_BUILD_TYPE macro in png.h, used in the msvc project.
+ Removed the png_flush() in pngwrite.c that crashes some applications
+ that don't set png_output_flush_fn.
+ Added makefile.macosx and makefile.aix to scripts directory.
+version 1.0.9beta4 [December 1, 2000]
+ Change png_chunk_warning to png_warning in png_check_keyword().
+ Increased the first part of msg buffer from 16 to 18 in png_chunk_error().
+version 1.0.9beta5 [December 15, 2000]
+ Added support for filter method 64 (for PNG datastreams embedded in MNG).
+version 1.0.9beta6 [December 18, 2000]
+ Revised png_set_filter() to accept filter method 64 when appropriate.
+ Added new PNG_HAVE_PNG_SIGNATURE bit to png_ptr->mode and use it to
+ help prevent applications from using MNG features in PNG datastreams.
+ Added png_permit_mng_features() function.
+ Revised libpng.3/libpng.txt. Changed "filter type" to "filter method".
+version 1.0.9rc1 [December 23, 2000]
+ Revised test for PNG_HAVE_PNG_SIGNATURE in pngrutil.c
+ Fixed error handling of unknown compression type in png_decompress_chunk().
+ In pngconf.h, define __cdecl when _MSC_VER is defined.
+version 1.0.9beta7 [December 28, 2000]
+ Changed PNG_TEXT_COMPRESSION_zTXt to PNG_COMPRESSION_TYPE_BASE several places.
+ Revised memory management in png_set_hIST and png_handle_hIST in a backward
+ compatible manner. PLTE and tRNS were revised similarly.
+ Revised the iCCP chunk reader to ignore trailing garbage.
+version 1.0.9beta8 [January 12, 2001]
+ Moved pngasmrd.h into pngconf.h.
+ Improved handling of out-of-spec garbage iCCP chunks generated by PhotoShop.
+version 1.0.9beta9 [January 15, 2001]
+ Added png_set_invalid, png_permit_mng_features, and png_mmx_supported to
+ wince and msvc project module definition files.
+ Minor revision of makefile.cygwin.
+ Fixed bug with progressive reading of narrow interlaced images in pngpread.c
+version 1.0.9beta10 [January 16, 2001]
+ Do not typedef png_FILE_p in pngconf.h when PNG_NO_STDIO is defined.
+ Fixed "png_mmx_supported" typo in project definition files.
+version 1.0.9beta11 [January 19, 2001]
+ Updated makefile.sgi to make shared library.
+ Removed png_mmx_support() function and disabled PNG_MNG_FEATURES_SUPPORTED
+ by default, for the benefit of DLL forward compatibility. These will
+ be re-enabled in version 1.2.0.
+version 1.0.9rc2 [January 22, 2001]
+ Revised cygwin support.
+
+version 1.0.9 [January 31, 2001]
+ Added check of cygwin's ALL_STATIC in pngconf.h
+ Added "-nommx" parameter to contrib/gregbook/rpng2-win and rpng2-x demos.
+version 1.0.10beta1 [March 14, 2001]
+ Revised makefile.dec, makefile.sgi, and makefile.sggcc; added makefile.hpgcc.
+ Reformatted libpng.3 to eliminate bad line breaks.
+ Added checks for _mmx_supported in the read_filter_row function of pnggccrd.c
+ Added prototype for png_mmx_support() near the top of pnggccrd.c
+ Moved some error checking from png_handle_IHDR to png_set_IHDR.
+ Added PNG_NO_READ_SUPPORTED and PNG_NO_WRITE_SUPPORTED macros.
+ Revised png_mmx_support() function in pnggccrd.c
+ Restored version 1.0.8 PNG_WRITE_EMPTY_PLTE_SUPPORTED behavior in pngwutil.c
+ Fixed memory leak in contrib/visupng/PngFile.c
+ Fixed bugs in png_combine_row() in pnggccrd.c and pngvcrd.c (C version)
+ Added warnings when retrieving or setting gamma=0.
+ Increased the first part of msg buffer from 16 to 18 in png_chunk_warning().
+version 1.0.10rc1 [March 23, 2001]
+ Changed all instances of memcpy, strcpy, and strlen to png_memcpy, png_strcpy,
+ and png_strlen.
+ Revised png_mmx_supported() function in pnggccrd.c to return proper value.
+ Fixed bug in progressive reading (pngpread.c) with small images (height < 8).
+
+version 1.0.10 [March 30, 2001]
+ Deleted extraneous space (introduced in 1.0.9) from line 42 of makefile.cygwin
+ Added beos project files (Chris Herborth)
+version 1.0.11beta1 [April 3, 2001]
+ Added type casts on several png_malloc() calls (Dimitri Papadapoulos).
+ Removed a no-longer needed AIX work-around from pngconf.h
+ Changed several "//" single-line comments to C-style in pnggccrd.c
+version 1.0.11beta2 [April 11, 2001]
+ Removed PNGAPI from several functions whose prototypes did not have PNGAPI.
+ Updated scripts/pngos2.def
+version 1.0.11beta3 [April 14, 2001]
+ Added checking the results of many instances of png_malloc() for NULL
+version 1.0.11beta4 [April 20, 2001]
+ Undid the changes from version 1.0.11beta3. Added a check for NULL return
+ from user's malloc_fn().
+ Removed some useless type casts of the NULL pointer.
+ Added makefile.netbsd
+
+version 1.0.11 [April 27, 2001]
+ Revised makefile.netbsd
+version 1.0.12beta1 [May 14, 2001]
+ Test for Windows platform in pngconf.h when including malloc.h (Emmanuel Blot)
+ Updated makefile.cygwin and handling of Cygwin's ALL_STATIC in pngconf.h
+ Added some never-to-be-executed code in pnggccrd.c to quiet compiler warnings.
+ Eliminated the png_error about apps using png_read|write_init(). Instead,
+ libpng will reallocate the png_struct and info_struct if they are too small.
+ This retains future binary compatibility for old applications written for
+ libpng-0.88 and earlier.
+version 1.2.0beta1 [May 6, 2001]
+ Bumped DLLNUM to 2.
+ Re-enabled PNG_MNG_FEATURES_SUPPORTED and enabled PNG_ASSEMBLER_CODE_SUPPORTED
+ by default.
+ Added runtime selection of MMX features.
+ Added png_set_strip_error_numbers function and related macros.
+version 1.2.0beta2 [May 7, 2001]
+ Finished merging 1.2.0beta1 with version 1.0.11
+ Added a check for attempts to read or write PLTE in grayscale PNG datastreams.
+version 1.2.0beta3 [May 17, 2001]
+ Enabled user memory function by default.
+ Modified png_create_struct so it passes user mem_ptr to user memory allocator.
+ Increased png_mng_features flag from png_byte to png_uint_32.
+ Bumped shared-library (so-number) and dll-number to 3.
+version 1.2.0beta4 [June 23, 2001]
+ Check for missing profile length field in iCCP chunk and free chunk_data
+ in case of truncated iCCP chunk.
+ Bumped shared-library number to 3 in makefile.sgi and makefile.sggcc
+ Bumped dll-number from 2 to 3 in makefile.cygwin
+ Revised contrib/gregbook/rpng*-x.c to avoid a memory leak and to exit cleanly
+ if user attempts to run it on an 8-bit display.
+ Updated contrib/gregbook
+ Use png_malloc instead of png_zalloc to allocate palette in pngset.c
+ Updated makefile.ibmc
+ Added some typecasts to eliminate gcc 3.0 warnings. Changed prototypes
+ of png_write_oFFS width and height from png_uint_32 to png_int_32.
+ Updated example.c
+ Revised prototypes for png_debug_malloc and png_debug_free in pngtest.c
+version 1.2.0beta5 [August 8, 2001]
+ Revised contrib/gregbook
+ Revised makefile.gcmmx
+ Revised pnggccrd.c to conditionally compile some thread-unsafe code only
+ when PNG_THREAD_UNSAFE_OK is defined.
+ Added tests to prevent pngwutil.c from writing a bKGD or tRNS chunk with
+ value exceeding 2^bit_depth-1
+ Revised makefile.sgi and makefile.sggcc
+ Replaced calls to fprintf(stderr,...) with png_warning() in pnggccrd.c
+ Removed restriction that do_invert_mono only operate on 1-bit opaque files
+
+version 1.2.0 [September 1, 2001]
+ Changed a png_warning() to png_debug() in pnggccrd.c
+ Fixed contrib/gregbook/rpng-x.c, rpng2-x.c to avoid crash with XFreeGC().
+version 1.2.1beta1 [October 19, 2001]
+ Revised makefile.std in contrib/pngminus
+ Include background_1 in png_struct regardless of gamma support.
+ Revised makefile.netbsd and makefile.macosx, added makefile.darwin.
+ Revised example.c to provide more details about using row_callback().
+version 1.2.1beta2 [October 25, 2001]
+ Added type cast to each NULL appearing in a function call, except for
+ WINCE functions.
+ Added makefile.so9.
+version 1.2.1beta3 [October 27, 2001]
+ Removed type casts from all NULLs.
+ Simplified png_create_struct_2().
+version 1.2.1beta4 [November 7, 2001]
+ Revised png_create_info_struct() and png_creat_struct_2().
+ Added error message if png_write_info() was omitted.
+ Type cast NULLs appearing in function calls when _NO_PROTO or
+ PNG_TYPECAST_NULL is defined.
+version 1.2.1rc1 [November 24, 2001]
+ Type cast NULLs appearing in function calls except when PNG_NO_TYPECAST_NULL
+ is defined.
+ Changed typecast of "size" argument to png_size_t in pngmem.c calls to
+ the user malloc_fn, to agree with the prototype in png.h
+ Added a pop/push operation to pnggccrd.c, to preserve Eflag (Maxim Sobolev)
+ Updated makefile.sgi to recognize LIBPATH and INCPATH.
+ Updated various makefiles so "make clean" does not remove previous major
+ version of the shared library.
+version 1.2.1rc2 [December 4, 2001]
+ Always allocate 256-entry internal palette, hist, and trans arrays, to
+ avoid out-of-bounds memory reference caused by invalid PNG datastreams.
+ Added a check for prefix_length > data_length in iCCP chunk handler.
+
+version 1.2.1 [December 7, 2001]
+ None.
+version 1.2.2beta1 [February 22, 2002]
+ Fixed a bug with reading the length of iCCP profiles (Larry Reeves).
+ Revised makefile.linux, makefile.gcmmx, and makefile.sgi to generate
+ libpng.a, libpng12.so (not libpng.so.3), and libpng12/png.h
+ Revised makefile.darwin to remove "-undefined suppress" option.
+ Added checks for gamma and chromaticity values over 21474.83, which exceed
+ the limit for PNG unsigned 32-bit integers when encoded.
+ Revised calls to png_create_read_struct() and png_create_write_struct()
+ for simpler debugging.
+ Revised png_zalloc() so zlib handles errors (uses PNG_FLAG_MALLOC_NULL_MEM_OK)
+version 1.2.2beta2 [February 23, 2002]
+ Check chunk_length and idat_size for invalid (over PNG_MAX_UINT) lengths.
+ Check for invalid image dimensions in png_get_IHDR.
+ Added missing "fi;" in the install target of the SGI makefiles.
+ Added install-static to all makefiles that make shared libraries.
+ Always do gamma compensation when image is partially transparent.
+version 1.2.2beta3 [March 7, 2002]
+ Compute background.gray and background_1.gray even when color_type is RGB
+ in case image gets reduced to gray later.
+ Modified shared-library makefiles to install pkgconfig/libpngNN.pc.
+ Export (with PNGAPI) png_zalloc, png_zfree, and png_handle_as_unknown
+ Removed unused png_write_destroy_info prototype from png.h
+ Eliminated incorrect use of width_mmx from pnggccrd.c in pixel_bytes == 8 case
+ Added install-shared target to all makefiles that make shared libraries.
+ Stopped a double free of palette, hist, and trans when not using free_me.
+ Added makefile.32sunu for Sun Ultra 32 and makefile.64sunu for Sun Ultra 64.
+version 1.2.2beta4 [March 8, 2002]
+ Compute background.gray and background_1.gray even when color_type is RGB
+ in case image gets reduced to gray later (Jason Summers).
+ Relocated a misplaced /bin/rm in the "install-shared" makefile targets
+ Added PNG_1_0_X macro which can be used to build a 1.0.x-compatible library.
+version 1.2.2beta5 [March 26, 2002]
+ Added missing PNGAPI to several function definitions.
+ Check for invalid bit_depth or color_type in png_get_IHDR(), and
+ check for missing PLTE or IHDR in png_push_read_chunk() (Matthias Clasen).
+ Revised iTXt support to accept NULL for lang and lang_key.
+ Compute gamma for color components of background even when color_type is gray.
+ Changed "()" to "{}" in scripts/libpng.pc.in.
+ Revised makefiles to put png.h and pngconf.h only in $prefix/include/libpngNN
+ Revised makefiles to make symlink to libpng.so.NN in addition to libpngNN.so
+version 1.2.2beta6 [March 31, 2002]
+version 1.0.13beta1 [March 31, 2002]
+ Prevent png_zalloc() from trying to memset memory that it failed to acquire.
+ Add typecasts of PNG_MAX_UINT in pngset_cHRM_fixed() (Matt Holgate).
+ Ensure that the right function (user or default) is used to free the
+ png_struct after an error in png_create_read_struct_2().
+version 1.2.2rc1 [April 7, 2002]
+version 1.0.13rc1 [April 7, 2002]
+ Save the ebx register in pnggccrd.c (Sami Farin)
+ Add "mem_ptr = png_ptr->mem_ptr" in png_destroy_write_struct() (Paul Gardner).
+ Updated makefiles to put headers in include/libpng and remove old include/*.h.
+
+version 1.2.2 [April 15, 2002]
+version 1.0.13 [April 15, 2002]
+ Revised description of png_set_filter() in libpng.3/libpng.txt.
+ Revised makefile.netbsd and added makefile.neNNbsd and makefile.freebsd
+version 1.0.13patch01 [April 17, 2002]
+version 1.2.2patch01 [April 17, 2002]
+ Changed ${PNGMAJ}.${PNGVER} bug to ${PNGVER} in makefile.sgi and makefile.sggcc
+ Fixed VER -> PNGVER typo in makefile.macosx and added install-static to install
+ Added install: target to makefile.32sunu and makefile.64sunu
+version 1.0.13patch03 [April 18, 2002]
+version 1.2.2patch03 [April 18, 2002]
+ Revised 15 makefiles to link libpng.a to libpngNN.a and the include libpng
+ subdirectory to libpngNN subdirectory without the full pathname.
+ Moved generation of libpng.pc from "install" to "all" in 15 makefiles.
+version 1.2.3rc1 [April 28, 2002]
+ Added install-man target to 15 makefiles (Dimitri Papadopolous-Orfanos).
+ Added $(DESTDIR) feature to 24 makefiles (Tim Mooney)
+ Fixed bug with $prefix, should be $(prefix) in makefile.hpux.
+ Updated cygwin-specific portion of pngconf.h and revised makefile.cygwin
+ Added a link from libpngNN.pc to libpng.pc in 15 makefiles.
+ Added links from include/libpngNN/*.h to include/*.h in 24 makefiles.
+ Revised makefile.darwin to make relative links without full pathname.
+ Added setjmp() at the end of png_create_*_struct_2() in case user forgets
+ to put one in their application.
+ Restored png_zalloc() and png_zfree() prototypes to version 1.2.1 and
+ removed them from module definition files.
+version 1.2.3rc2 [May 1, 2002]
+ Fixed bug in reporting number of channels in pngget.c and pngset.c,
+ that was introduced in version 1.2.2beta5.
+ Exported png_zalloc(), png_zfree(), png_default_read(), png_default_write(),
+ png_default_flush(), and png_push_fill_buffer() and included them in
+ module definition files.
+ Added "libpng.pc" dependency to the "install-shared" target in 15 makefiles.
+version 1.2.3rc3 [May 1, 2002]
+ Revised prototype for png_default_flush()
+ Remove old libpng.pc and libpngNN.pc before installing new ones.
+version 1.2.3rc4 [May 2, 2002]
+ Typos in *.def files (png_default_read|write -> png_default_read|write_data)
+ In makefiles, changed rm libpng.NN.pc to rm libpngNN.pc
+ Added libpng-config and libpngNN-config and modified makefiles to install them.
+ Changed $(MANPATH) to $(DESTDIR)$(MANPATH) in makefiles
+ Added "Win32 DLL VB" configuration to projects/msvc/libpng.dsp
+version 1.2.3rc5 [May 11, 2002]
+ Changed "error" and "message" in prototypes to "error_message" and
+ "warning_message" to avoid namespace conflict.
+ Revised 15 makefiles to build libpng-config from libpng-config-*.in
+ Once more restored png_zalloc and png_zfree to regular nonexported form.
+ Restored png_default_read|write_data, png_default_flush, png_read_fill_buffer
+ to nonexported form, but with PNGAPI, and removed them from module def files.
+version 1.2.3rc6 [May 14, 2002]
+ Removed "PNGAPI" from png_zalloc() and png_zfree() in png.c
+ Changed "Gz" to "Gd" in projects/msvc/libpng.dsp and zlib.dsp.
+ Removed leftover libpng-config "sed" script from four makefiles.
+ Revised libpng-config creating script in 16 makefiles.
+
+version 1.2.3 [May 22, 2002]
+ Revised libpng-config target in makefile.cygwin.
+ Removed description of png_set_mem_fn() from documentation.
+ Revised makefile.freebsd.
+ Minor cosmetic changes to 15 makefiles, e.g., $(DI) = $(DESTDIR)/$(INCDIR).
+ Revised projects/msvc/README.txt
+ Changed -lpng to -lpngNN in LDFLAGS in several makefiles.
+version 1.2.4beta1 [May 24, 2002]
+ Added libpng.pc and libpng-config to "all:" target in 16 makefiles.
+ Fixed bug in 16 makefiles: $(DESTDIR)/$(LIBPATH) to $(DESTDIR)$(LIBPATH)
+ Added missing "\" before closing double quote in makefile.gcmmx.
+ Plugged various memory leaks; added png_malloc_warn() and png_set_text_2()
+ functions.
+version 1.2.4beta2 [June 25, 2002]
+ Plugged memory leak of png_ptr->current_text (Matt Holgate).
+ Check for buffer overflow before reading CRC in pngpread.c (Warwick Allison)
+ Added -soname to the loader flags in makefile.dec, makefile.sgi, and
+ makefile.sggcc.
+ Added "test-installed" target to makefile.linux, makefile.gcmmx,
+ makefile.sgi, and makefile.sggcc.
+version 1.2.4beta3 [June 28, 2002]
+ Plugged memory leak of row_buf in pngtest.c when there is a png_error().
+ Detect buffer overflow in pngpread.c when IDAT is corrupted with extra data.
+ Added "test-installed" target to makefile.32sunu, makefile.64sunu,
+ makefile.beos, makefile.darwin, makefile.dec, makefile.macosx,
+ makefile.solaris, makefile.hpux, makefile.hpgcc, and makefile.so9.
+version 1.2.4rc1 and 1.0.14rc1 [July 2, 2002]
+ Added "test-installed" target to makefile.cygwin and makefile.sco.
+ Revised pnggccrd.c to be able to back out version 1.0.x via PNG_1_0_X macro.
+
+version 1.2.4 and 1.0.14 [July 8, 2002]
+ Changed png_warning() to png_error() when width is too large to process.
+version 1.2.4patch01 [July 20, 2002]
+ Revised makefile.cygwin to use DLL number 12 instead of 13.
+version 1.2.5beta1 [August 6, 2002]
+ Added code to contrib/gregbook/readpng2.c to ignore unused chunks.
+ Replaced toucan.png in contrib/gregbook (it has been corrupt since 1.0.11)
+ Removed some stray *.o files from contrib/gregbook.
+ Changed png_error() to png_warning() about "Too much data" in pngpread.c
+ and about "Extra compressed data" in pngrutil.c.
+ Prevent png_ptr->pass from exceeding 7 in png_push_finish_row().
+ Updated makefile.hpgcc
+ Updated png.c and pnggccrd.c handling of return from png_mmx_support()
+version 1.2.5beta2 [August 15, 2002]
+ Only issue png_warning() about "Too much data" in pngpread.c when avail_in
+ is nonzero.
+ Updated makefiles to install a separate libpng.so.3 with its own rpath.
+version 1.2.5rc1 and 1.0.15rc1 [August 24, 2002]
+ Revised makefiles to not remove previous minor versions of shared libraries.
+version 1.2.5rc2 and 1.0.15rc2 [September 16, 2002]
+ Revised 13 makefiles to remove "-lz" and "-L$(ZLIBLIB)", etc., from shared
+ library loader directive.
+ Added missing "$OBJSDLL" line to makefile.gcmmx.
+ Added missing "; fi" to makefile.32sunu.
+version 1.2.5rc3 and 1.0.15rc3 [September 18, 2002]
+ Revised libpng-config script.
+
+version 1.2.5 and 1.0.15 [October 3, 2002]
+ Revised makefile.macosx, makefile.darwin, makefile.hpgcc, and makefile.hpux,
+ and makefile.aix.
+ Relocated two misplaced PNGAPI lines in pngtest.c
+version 1.2.6beta1 [October 22, 2002]
+ Commented out warning about uninitialized mmx_support in pnggccrd.c.
+ Changed "IBMCPP__" flag to "__IBMCPP__" in pngconf.h.
+ Relocated two more misplaced PNGAPI lines in pngtest.c
+ Fixed memory overrun bug in png_do_read_filler() with 16-bit datastreams,
+ introduced in version 1.0.2.
+ Revised makefile.macosx, makefile.dec, makefile.aix, and makefile.32sunu.
+version 1.2.6beta2 [November 1, 2002]
+ Added libpng-config "--ldopts" output.
+ Added "AR=ar" and "ARFLAGS=rc" and changed "ar rc" to "$(AR) $(ARFLAGS)"
+ in makefiles.
+version 1.2.6beta3 [July 18, 2004]
+ Reverted makefile changes from version 1.2.6beta2 and some of the changes
+ from version 1.2.6beta1; these will be postponed until version 1.2.7.
+ Version 1.2.6 is going to be a simple bugfix release.
+ Changed the one instance of "ln -sf" to "ln -f -s" in each Sun makefile.
+ Fixed potential overrun in pngerror.c by using strncpy instead of memcpy.
+ Added "#!/bin/sh" at the top of configure, for recognition of the
+ 'x' flag under Cygwin (Cosmin).
+ Optimized vacuous tests that silence compiler warnings, in png.c (Cosmin).
+ Added support for PNG_USER_CONFIG, in pngconf.h (Cosmin).
+ Fixed the special memory handler for Borland C under DOS, in pngmem.c
+ (Cosmin).
+ Removed some spurious assignments in pngrutil.c (Cosmin).
+ Replaced 65536 with 65536L, and 0xffff with 0xffffL, to silence warnings
+ on 16-bit platforms (Cosmin).
+ Enclosed shift op expressions in parentheses, to silence warnings (Cosmin).
+ Used proper type png_fixed_point, to avoid problems on 16-bit platforms,
+ in png_handle_sRGB() (Cosmin).
+ Added compression_type to png_struct, and optimized the window size
+ inside the deflate stream (Cosmin).
+ Fixed definition of isnonalpha(), in pngerror.c and pngrutil.c (Cosmin).
+ Fixed handling of unknown chunks that come after IDAT (Cosmin).
+ Allowed png_error() and png_warning() to work even if png_ptr == NULL
+ (Cosmin).
+ Replaced row_info->rowbytes with row_bytes in png_write_find_filter()
+ (Cosmin).
+ Fixed definition of PNG_LIBPNG_VER_DLLNUM (Simon-Pierre).
+ Used PNG_LIBPNG_VER and PNG_LIBPNG_VER_STRING instead of the hardcoded
+ values in png.c (Simon-Pierre, Cosmin).
+ Initialized png_libpng_ver[] with PNG_LIBPNG_VER_STRING (Simon-Pierre).
+ Replaced PNG_LIBPNG_VER_MAJOR with PNG_LIBPNG_VER_DLLNUM in png.rc
+ (Simon-Pierre).
+ Moved the definition of PNG_HEADER_VERSION_STRING near the definitions
+ of the other PNG_LIBPNG_VER_... symbols in png.h (Cosmin).
+ Relocated #ifndef PNGAPI guards in pngconf.h (Simon-Pierre, Cosmin).
+ Updated scripts/makefile.vc(a)win32 (Cosmin).
+ Updated the MSVC project (Simon-Pierre, Cosmin).
+ Updated the Borland C++ Builder project (Cosmin).
+ Avoided access to asm_flags in pngvcrd.c, if PNG_1_0_X is defined (Cosmin).
+ Commented out warning about uninitialized mmx_support in pngvcrd.c (Cosmin).
+ Removed scripts/makefile.bd32 and scripts/pngdef.pas (Cosmin).
+ Added extra guard around inclusion of Turbo C memory headers, in pngconf.h
+ (Cosmin).
+ Renamed projects/msvc/ to projects/visualc6/, and projects/borland/ to
+ projects/cbuilder5/ (Cosmin).
+ Moved projects/visualc6/png32ms.def to scripts/pngw32.def,
+ and projects/visualc6/png.rc to scripts/pngw32.rc (Cosmin).
+ Added projects/visualc6/pngtest.dsp; removed contrib/msvctest/ (Cosmin).
+ Changed line endings to DOS style in cbuilder5 and visualc6 files, even
+ in the tar.* distributions (Cosmin).
+ Updated contrib/visupng/VisualPng.dsp (Cosmin).
+ Updated contrib/visupng/cexcept.h to version 2.0.0 (Cosmin).
+ Added a separate distribution with "configure" and supporting files (Junichi).
+version 1.2.6beta4 [July 28, 2004]
+ Added user ability to change png_size_t via a PNG_SIZE_T macro.
+ Added png_sizeof() and png_convert_size() functions.
+ Added PNG_SIZE_MAX (maximum value of a png_size_t variable.
+ Added check in png_malloc_default() for (size_t)size != (png_uint_32)size
+ which would indicate an overflow.
+ Changed sPLT failure action from png_error to png_warning and abandon chunk.
+ Changed sCAL and iCCP failures from png_error to png_warning and abandon.
+ Added png_get_uint_31(png_ptr, buf) function.
+ Added PNG_UINT_32_MAX macro.
+ Renamed PNG_MAX_UINT to PNG_UINT_31_MAX.
+ Made png_zalloc() issue a png_warning and return NULL on potential
+ overflow.
+ Turn on PNG_NO_ZALLOC_ZERO by default in version 1.2.x
+ Revised "clobber list" in pnggccrd.c so it will compile under gcc-3.4.
+ Revised Borland portion of png_malloc() to return NULL or issue
+ png_error() according to setting of PNG_FLAG_MALLOC_NULL_MEM_OK.
+ Added PNG_NO_SEQUENTIAL_READ_SUPPORTED macro to conditionally remove
+ sequential read support.
+ Added some "#if PNG_WRITE_SUPPORTED" blocks.
+ Added #ifdef to remove some redundancy in png_malloc_default().
+ Use png_malloc instead of png_zalloc to allocate the pallete.
+version 1.0.16rc1 and 1.2.6rc1 [August 4, 2004]
+ Fixed buffer overflow vulnerability in png_handle_tRNS()
+ Fixed integer arithmetic overflow vulnerability in png_read_png().
+ Fixed some harmless bugs in png_handle_sBIT, etc, that would cause
+ duplicate chunk types to go undetected.
+ Fixed some timestamps in the -config version
+ Rearranged order of processing of color types in png_handle_tRNS().
+ Added ROWBYTES macro to calculate rowbytes without integer overflow.
+ Updated makefile.darwin and removed makefile.macosx from scripts directory.
+ Imposed default one million column, one-million row limits on the image
+ dimensions, and added png_set_user_limits() function to override them.
+ Revised use of PNG_SET_USER_LIMITS_SUPPORTED macro.
+ Fixed wrong cast of returns from png_get_user_width|height_max().
+ Changed some "keep the compiler happy" from empty statements to returns,
+ Revised libpng.txt to remove 1.2.x stuff from the 1.0.x distribution
+version 1.0.16rc2 and 1.2.6rc2 [August 7, 2004]
+ Revised makefile.darwin and makefile.solaris. Removed makefile.macosx.
+ Revised pngtest's png_debug_malloc() to use png_malloc() instead of
+ png_malloc_default() which is not supposed to be exported.
+ Fixed off-by-one error in one of the conversions to PNG_ROWBYTES() in
+ pngpread.c. Bug was introduced in 1.2.6rc1.
+ Fixed bug in RGB to RGBX transformation introduced in 1.2.6rc1.
+ Fixed old bug in RGB to Gray transformation.
+ Fixed problem with 64-bit compilers by casting arguments to abs()
+ to png_int_32.
+ Changed "ln -sf" to "ln -f -s" in three makefiles (solaris, sco, so9).
+ Changed "HANDLE_CHUNK_*" to "PNG_HANDLE_CHUNK_*" (Cosmin)
+ Added "-@/bin/rm -f $(DL)/$(LIBNAME).so.$(PNGMAJ)" to 15 *NIX makefiles.
+ Added code to update the row_info->colortype in png_do_read_filler() (MSB).
+version 1.0.16rc3 and 1.2.6rc3 [August 9, 2004]
+ Eliminated use of "abs()" in testing cHRM and gAMA values, to avoid
+ trouble with some 64-bit compilers. Created PNG_OUT_OF_RANGE() macro.
+ Revised documentation of png_set_keep_unknown_chunks().
+ Check handle_as_unknown status in pngpread.c, as in pngread.c previously.
+ Moved "PNG_HANDLE_CHUNK_*" macros out of PNG_INTERNAL section of png.h
+ Added "rim" definitions for CONST4 and CONST6 in pnggccrd.c
+version 1.0.16rc4 and 1.2.6rc4 [August 10, 2004]
+ Fixed mistake in pngtest.c introduced in 1.2.6rc2 (declaration of
+ "pinfo" was out of place).
+version 1.0.16rc5 and 1.2.6rc5 [August 10, 2004]
+ Moved "PNG_HANDLE_CHUNK_*" macros out of PNG_ASSEMBLER_CODE_SUPPORTED
+ section of png.h where they were inadvertently placed in version rc3.
+
+version 1.2.6 and 1.0.16 [August 15, 2004]
+ Revised pngtest so memory allocation testing is only done when PNG_DEBUG==1.
+version 1.2.7beta1 [August 26, 2004]
+ Removed unused pngasmrd.h file.
+ Removed references to uu.net for archived files. Added references to
+ PNG Spec (second edition) and the PNG ISO/IEC Standard.
+ Added "test-dd" target in 15 makefiles, to run pngtest in DESTDIR.
+ Fixed bug with "optimized window size" in the IDAT datastream, that
+ causes libpng to write PNG files with incorrect zlib header bytes.
+version 1.2.7beta2 [August 28, 2004]
+ Fixed bug with sCAL chunk and big-endian machines (David Munro).
+ Undid new code added in 1.2.6rc2 to update the color_type in
+ png_set_filler().
+ Added png_set_add_alpha() that updates color type.
+version 1.0.17rc1 and 1.2.7rc1 [September 4, 2004]
+ Revised png_set_strip_filler() to not remove alpha if color_type has alpha.
+
+version 1.2.7 and 1.0.17 [September 12, 2004]
+ Added makefile.hp64
+ Changed projects/msvc/png32ms.def to scripts/png32ms.def in makefile.cygwin
+version 1.2.8beta1 [November 1, 2004]
+ Fixed bug in png_text_compress() that would fail to complete a large block.
+ Fixed bug, introduced in libpng-1.2.7, that overruns a buffer during
+ strip alpha operation in png_do_strip_filler().
+ Added PNG_1_2_X definition in pngconf.h
+ Use #ifdef to comment out png_info_init in png.c and png_read_init in
+ pngread.c (as of 1.3.0)
+version 1.2.8beta2 [November 2, 2004]
+ Reduce color_type to a nonalpha type after strip alpha operation in
+ png_do_strip_filler().
+version 1.2.8beta3 [November 3, 2004]
+ Revised definitions of PNG_MAX_UINT_32, PNG_MAX_SIZE, and PNG_MAXSUM
+version 1.2.8beta4 [November 12, 2004]
+ Fixed (again) definition of PNG_LIBPNG_VER_DLLNUM in png.h (Cosmin).
+ Added PNG_LIBPNG_BUILD_PRIVATE in png.h (Cosmin).
+ Set png_ptr->zstream.data_type to Z_BINARY, to avoid unnecessary detection
+ of data type in deflate (Cosmin).
+ Deprecated but continue to support SPECIALBUILD and PRIVATEBUILD in favor of
+ PNG_LIBPNG_BUILD_SPECIAL_STRING and PNG_LIBPNG_BUILD_PRIVATE_STRING.
+version 1.2.8beta5 [November 20, 2004]
+ Use png_ptr->flags instead of png_ptr->transformations to pass
+ PNG_STRIP_ALPHA info to png_do_strip_filler(), to preserve ABI
+ compatibility.
+ Revised handling of SPECIALBUILD, PRIVATEBUILD,
+ PNG_LIBPNG_BUILD_SPECIAL_STRING and PNG_LIBPNG_BUILD_PRIVATE_STRING.
+version 1.2.8rc1 [November 24, 2004]
+ Moved handling of BUILD macros from pngconf.h to png.h
+ Added definition of PNG_LIBPNG_BASE_TYPE in png.h, inadvertently
+ omitted from beta5.
+ Revised scripts/pngw32.rc
+ Despammed mailing addresses by masking "@" with "at".
+ Inadvertently installed a supposedly faster test version of pngrutil.c
+version 1.2.8rc2 [November 26, 2004]
+ Added two missing "\" in png.h
+ Change tests in pngread.c and pngpread.c to
+ if (png_ptr->transformations || (png_ptr->flags&PNG_FLAG_STRIP_ALPHA))
+ png_do_read_transformations(png_ptr);
+version 1.2.8rc3 [November 28, 2004]
+ Reverted pngrutil.c to version libpng-1.2.8beta5.
+ Added scripts/makefile.elf with supporting code in pngconf.h for symbol
+ versioning (John Bowler).
+version 1.2.8rc4 [November 29, 2004]
+ Added projects/visualc7 (Simon-pierre).
+version 1.2.8rc5 [November 29, 2004]
+ Fixed new typo in scripts/pngw32.rc
+
+version 1.2.8 [December 3, 2004]
+ Removed projects/visualc7, added projects/visualc71.
+
+version 1.2.9beta1 [February 21, 2006]
+
+ Initialized some structure members in pngwutil.c to avoid gcc-4.0.0 complaints
+ Revised man page and libpng.txt to make it clear that one should not call
+ png_read_end or png_write_end after png_read_png or png_write_png.
+ Updated references to png-mng-implement mailing list.
+ Fixed an incorrect typecast in pngrutil.c
+ Added PNG_NO_READ_SUPPORTED conditional for making a write-only library.
+ Added PNG_NO_WRITE_INTERLACING_SUPPORTED conditional.
+ Optimized alpha-inversion loops in pngwtran.c
+ Moved test for nonzero gamma outside of png_build_gamma_table() in pngrtran.c
+ Make sure num_trans is <= 256 before copying data in png_set_tRNS().
+ Make sure num_palette is <= 256 before copying data in png_set_PLTE().
+ Interchanged order of write_swap_alpha and write_invert_alpha transforms.
+ Added parentheses in the definition of PNG_LIBPNG_BUILD_TYPE (Cosmin).
+ Optimized zlib window flag (CINFO) in contrib/pngsuite/*.png (Cosmin).
+ Updated scripts/makefile.bc32 for Borland C++ 5.6 (Cosmin).
+ Exported png_get_uint_32, png_save_uint_32, png_get_uint_16, png_save_uint_16,
+ png_get_int_32, png_save_int_32, png_get_uint_31 (Cosmin).
+ Added type cast (png_byte) in png_write_sCAL() (Cosmin).
+ Fixed scripts/makefile.cygwin (Christian Biesinger, Cosmin).
+ Default iTXt support was inadvertently enabled.
+
+version 1.2.9beta2 [February 21, 2006]
+
+ Check for png_rgb_to_gray and png_gray_to_rgb read transformations before
+ checking for png_read_dither in pngrtran.c
+ Revised checking of chromaticity limits to accommodate extended RGB
+ colorspace (John Denker).
+ Changed line endings in some of the project files to CRLF, even in the
+ "Unix" tar distributions (Cosmin).
+ Made png_get_int_32 and png_save_int_32 always available (Cosmin).
+ Updated scripts/pngos2.def, scripts/pngw32.def and projects/wince/png32ce.def
+ with the newly exported functions.
+ Eliminated distributions without the "configure" script.
+ Updated INSTALL instructions.
+
+version 1.2.9beta3 [February 24, 2006]
+
+ Fixed CRCRLF line endings in contrib/visupng/VisualPng.dsp
+ Made libpng.pc respect EXEC_PREFIX (D. P. Kreil, J. Bowler)
+ Removed reference to pngasmrd.h from Makefile.am
+ Renamed CHANGES to ChangeLog.
+ Renamed LICENSE to COPYING.
+ Renamed ANNOUNCE to NEWS.
+ Created AUTHORS file.
+
+version 1.2.9beta4 [March 3, 2006]
+
+ Changed definition of PKGCONFIG from $prefix/lib to $libdir in configure.ac
+ Reverted to filenames LICENSE and ANNOUNCE; removed AUTHORS and COPYING.
+ Removed newline from the end of some error and warning messages.
+ Removed test for sqrt() from configure.ac and configure.
+ Made swap tables in pngtrans.c PNG_CONST (Carlo Bramix).
+ Disabled default iTXt support that was inadvertently enabled in
+ libpng-1.2.9beta1.
+ Added "OS2" to list of systems that don't need underscores, in pnggccrd.c
+ Removed libpng version and date from *.c files.
+
+version 1.2.9beta5 [March 4, 2006]
+ Removed trailing blanks from source files.
+ Put version and date of latest change in each source file, and changed
+ copyright year accordingly.
+ More cleanup of configure.ac, Makefile.ac, and associated scripts.
+ Restored scripts/makefile.elf which was inadvertently deleted.
+
+version 1.2.9beta6 [March 6, 2006]
+ Fixed typo (RELEASE) in configuration files.
+
+version 1.2.9beta7 [March 7, 2006]
+ Removed libpng.vers and libpng.sym from libpng12_la_SOURCES in Makefile.am
+ Fixed inconsistent #ifdef's around png_sig_bytes() and png_set_sCAL_s()
+ in png.h.
+ Updated makefile.elf as suggested by debian.
+ Made cosmetic changes to some makefiles, adding LN_SF and other macros.
+ Made some makefiles accept "exec_prefix".
+
+version 1.2.9beta8 [March 9, 2006]
+ Fixed some "#if defined (..." which should be "#if defined(..."
+ Bug introduced in libpng-1.2.8.
+ Fixed inconsistency in definition of png_default_read_data()
+ Restored blank that was lost from makefile.sggcc "clean" target in beta7.
+ Revised calculation of "current" and "major" for irix in ltmain.sh
+ Changed "mkdir" to "MKDIR_P" in some makefiles.
+ Separated PNG_EXPAND and PNG_EXPAND_tRNS.
+ Added png_set_expand_gray_1_2_4_to_8() and deprecated
+ png_set_gray_1_2_4_to_8() which also expands tRNS to alpha.
+
+version 1.2.9beta9 [March 10, 2006]
+ Include "config.h" in pngconf.h when available.
+ Added some checks for NULL png_ptr or NULL info_ptr (timeless)
+
+version 1.2.9beta10 [March 20, 2006]
+ Removed extra CR from contrib/visualpng/VisualPng.dsw (Cosmin)
+ Made pnggccrd.c PIC-compliant (Christian Aichinger).
+ Added makefile.mingw (Wolfgang Glas).
+ Revised pngconf.h MMX checking.
+
+version 1.2.9beta11 [March 22, 2006]
+ Fixed out-of-order declaration in pngwrite.c that was introduced in beta9
+ Simplified some makefiles by using LIBSO, LIBSOMAJ, and LIBSOVER macros.
+
+version 1.2.9rc1 [March 31, 2006]
+ Defined PNG_USER_PRIVATEBUILD when including "pngusr.h" (Cosmin).
+ Removed nonsensical assertion check from pngtest.c (Cosmin).
+
+version 1.2.9 [April 14, 2006]
+ Revised makefile.beos and added "none" selector in ltmain.sh
+
+version 1.2.10beta1 [April 15, 2006]
+ Renamed "config.h" to "png_conf.h" and revised Makefile.am to add
+ -DPNG_BUILDING_LIBPNG to compile directive, and modified pngconf.h
+ to include png_conf.h only when PNG_BUILDING_LIBPNG is defined.
+
+version 1.2.10beta2 [April 15, 2006]
+ Manually updated Makefile.in and configure. Changed png_conf.h.in
+ back to config.h.
+
+version 1.2.10beta3 [April 15, 2006]
+ Change png_conf.h back to config.h in pngconf.h.
+
+version 1.2.10beta4 [April 16, 2006]
+ Change PNG_BUILDING_LIBPNG to PNG_CONFIGURE_LIBPNG in config/Makefile*.
+
+version 1.2.10beta5 [April 16, 2006]
+ Added a configure check for compiling assembler code in pnggccrd.c
+
+version 1.2.10beta6 [April 17, 2006]
+ Revised the configure check for pnggccrd.c
+ Moved -DPNG_CONFIGURE_LIBPNG into @LIBPNG_DEFINES@
+ Added @LIBPNG_DEFINES@ to arguments when building libpng.sym
+
+version 1.2.10beta7 [April 18, 2006]
+ Change "exec_prefix=$prefix" to "exec_prefix=$(prefix)" in makefiles.
+
+version 1.2.10rc1 [April 19, 2006]
+ Ensure pngconf.h doesn't define both PNG_USE_PNGGCCRD and PNG_USE_PNGVCRD
+ Fixed "LN_FS" typo in makefile.sco and makefile.solaris.
+
+version 1.2.10rc2 [April 20, 2006]
+ Added a backslash between -DPNG_CONFIGURE_LIBPNG and -DPNG_NO_ASSEMBLER_CODE
+ in configure.ac and configure
+ Made the configure warning about versioned symbols less arrogant.
+
+version 1.2.10rc3 [April 21, 2006]
+ Added a note in libpng.txt that png_set_sig_bytes(8) can be used when
+ writing an embedded PNG without the 8-byte signature.
+ Revised makefiles and configure to avoid making links to libpng.so.*
+
+version 1.2.10 [April 23, 2006]
+ Reverted configure to "rc2" state.
+
+version 1.2.11beta1 [May 31, 2006]
+ scripts/libpng.pc.in contained "configure" style version info and would
+ not work with makefiles.
+ The shared-library makefiles were linking to libpng.so.0 instead of
+ libpng.so.3 compatibility as the library.
+
+version 1.2.11beta2 [June 2, 2006]
+ Increased sprintf buffer from 50 to 52 chars in pngrutil.c to avoid
+ buffer overflow.
+ Fixed bug in example.c (png_set_palette_rgb -> png_set_palette_to_rgb)
+
+version 1.2.11beta3 [June 5, 2006]
+ Prepended "#! /bin/sh" to ltmail.sh and contrib/pngminus/*.sh (Cosmin).
+ Removed the accidental leftover Makefile.in~ (Cosmin).
+ Avoided potential buffer overflow and optimized buffer in
+ png_write_sCAL(), png_write_sCAL_s() (Cosmin).
+ Removed the include directories and libraries from CFLAGS and LDFLAGS
+ in scripts/makefile.gcc (Nelson A. de Oliveira, Cosmin).
+
+version 1.2.11beta4 [June 6, 2006]
+ Allow zero-length IDAT chunks after the entire zlib datastream, but not
+ after another intervening chunk type.
+
+version 1.0.19rc1, 1.2.11rc1 [June 13, 2006]
+ Deleted extraneous square brackets from [config.h] in configure.ac
+
+version 1.0.19rc2, 1.2.11rc2 [June 14, 2006]
+ Added prototypes for PNG_INCH_CONVERSIONS functions to png.h
+ Revised INSTALL and autogen.sh
+ Fixed typo in several makefiles (-W1 should be -Wl)
+ Added typedef for png_int_32 and png_uint_32 on 64-bit systems.
+
+version 1.0.19rc3, 1.2.11rc3 [June 15, 2006]
+ Removed the new typedefs for 64-bit systems (delay until version 1.4.0)
+ Added one zero element to png_gamma_shift[] array in pngrtran.c to avoid
+ reading out of bounds.
+
+version 1.0.19rc4, 1.2.11rc4 [June 15, 2006]
+ Really removed the new typedefs for 64-bit systems.
+
+version 1.0.19rc5, 1.2.11rc5 [June 22, 2006]
+ Removed png_sig_bytes entry from scripts/pngw32.def
+
+version 1.0.19, 1.2.11 [June 26, 2006]
+ None.
+
+version 1.0.20, 1.2.12 [June 27, 2006]
+ Really increased sprintf buffer from 50 to 52 chars in pngrutil.c to avoid
+ buffer overflow.
+
+version 1.2.13beta1 [October 2, 2006]
+ Removed AC_FUNC_MALLOC from configure.ac
+ Work around Intel-Mac compiler bug by setting PNG_NO_MMX_CODE in pngconf.h
+ Change "logical" to "bitwise" throughout documentation.
+ Detect and fix attempt to write wrong iCCP profile length.
+
+version 1.0.21, 1.2.13 [November 14, 2006]
+ Fix potential buffer overflow in sPLT chunk handler.
+ Fix Makefile.am to not try to link to noexistent files.
+ Check all exported functions for NULL png_ptr.
+
+version 1.2.14beta1 [November 17, 2006]
+ Relocated three misplaced tests for NULL png_ptr.
+ Built Makefile.in with automake-1.9.6 instead of 1.9.2.
+ Build configure with autoconf-2.60 instead of 2.59
+
+version 1.2.14beta2 [November 17, 2006]
+ Added some typecasts in png_zalloc().
+
+version 1.2.14rc1 [November 20, 2006]
+ Changed "strtod" to "png_strtod" in pngrutil.c
+
+version 1.0.22, 1.2.14 [November 27, 2006]
+ Added missing "$(srcdir)" in Makefile.am and Makefile.in
+
+version 1.2.15beta1 [December 3, 2006]
+ Generated configure with autoconf-2.61 instead of 2.60
+ Revised configure.ac to update libpng.pc and libpng-config.
+
+version 1.2.15beta2 [December 3, 2006]
+ Always export MMX asm functions, just stubs if not building pnggccrd.c
+
+version 1.2.15beta3 [December 4, 2006]
+ Add "png_bytep" typecast to profile while calculating length in pngwutil.c
+
+version 1.2.15beta4 [December 7, 2006]
+ Added scripts/CMakeLists.txt
+ Changed PNG_NO_ASSEMBLER_CODE to PNG_NO_MMX_CODE in scripts, like 1.4.0beta
+
+version 1.2.15beta5 [December 7, 2006]
+ Changed some instances of PNG_ASSEMBLER_* to PNG_MMX_* in pnggccrd.c
+ Revised scripts/CMakeLists.txt
+
+version 1.2.15beta6 [December 13, 2006]
+ Revised scripts/CMakeLists.txt and configure.ac
+
+version 1.2.15rc1 [December 18, 2006]
+ Revised scripts/CMakeLists.txt
+
+version 1.2.15rc2 [December 21, 2006]
+ Added conditional #undef jmpbuf in pngtest.c to undo #define in AIX headers.
+ Added scripts/makefile.nommx
+
+version 1.2.15rc3 [December 25, 2006]
+ Fixed shared library numbering error that was intruduced in 1.2.15beta6.
+
+version 1.2.15rc4 [December 27, 2006]
+ Fixed handling of rgb_to_gray when png_ptr->color.gray isn't set.
+
+version 1.2.15rc5 [December 31, 2006]
+ Revised handling of rgb_to_gray.
+
+version 1.2.15 [January 5, 2007]
+ Added some (unsigned long) typecasts in pngtest.c to avoid printing errors.
+
+version 1.2.16beta1 [January 6, 2007]
+ Fix bugs in makefile.nommx
+
+version 1.2.16beta2 [January 16, 2007]
+ Revised scripts/CMakeLists.txt
+
+version 1.2.16 [January 31, 2007]
+ No changes.
+
+version 1.2.17beta1 [March 6, 2007]
+ Revised scripts/CMakeLists.txt to install both shared and static libraries.
+ Deleted a redundant line from pngset.c.
+
+version 1.2.17beta2 [April 26, 2007]
+ Relocated misplaced test for png_ptr == NULL in pngpread.c
+ Change "==" to "&" for testing PNG_RGB_TO_GRAY_ERR & PNG_RGB_TO_GRAY_WARN
+ flags.
+ Changed remaining instances of PNG_ASSEMBLER_* to PNG_MMX_*
+ Added pngerror() when write_IHDR fails in deflateInit2().
+ Added "const" to some array declarations.
+ Mention examples of libpng usage in the libpng*.txt and libpng.3 documents.
+
+version 1.2.17rc1 [May 4, 2007]
+ No changes.
+
+version 1.2.17rc2 [May 8, 2007]
+ Moved several PNG_HAVE_* macros out of PNG_INTERNAL because applications
+ calling set_unknown_chunk_location() need them.
+ Changed transformation flag from PNG_EXPAND_tRNS to PNG_EXPAND in
+ png_set_expand_gray_1_2_4_to_8().
+ Added png_ptr->unknown_chunk to hold working unknown chunk data, so it
+ can be free'ed in case of error. Revised unknown chunk handling in
+ pngrutil.c and pngpread.c to use this structure.
+
+version 1.2.17rc3 [May 8, 2007]
+ Revised symbol-handling in configure script.
+
+version 1.2.17rc4 [May 10, 2007]
+ Revised unknown chunk handling to avoid storing unknown critical chunks.
+
+version 1.0.25 [May 15, 2007]
+version 1.2.17 [May 15, 2007]
+ Added "png_ptr->num_trans=0" before error return in png_handle_tRNS,
+ to eliminate a vulnerability (CVE-2007-2445, CERT VU#684664)
+
+version 1.0.26 [May 15, 2007]
+version 1.2.18 [May 15, 2007]
+ Reverted the libpng-1.2.17rc3 change to symbol-handling in configure script
+
+version 1.2.19beta1 [May 18, 2007]
+ Changed "const static" to "static PNG_CONST" everywhere, mostly undoing
+ change of libpng-1.2.17beta2. Changed other "const" to "PNG_CONST"
+ Changed some handling of unused parameters, to avoid compiler warnings.
+ "if (unused == NULL) return;" becomes "unused = unused".
+
+version 1.2.19beta2 [May 18, 2007]
+ Only use the valid bits of tRNS value in png_do_expand() (Brian Cartier)
+
+version 1.2.19beta3 [May 19, 2007]
+ Add some "png_byte" typecasts in png_check_keyword() and write new_key
+ instead of key in zTXt chunk (Kevin Ryde).
+
+version 1.2.19beta4 [May 21, 2007]
+ Add png_snprintf() function and use it in place of sprint() for improved
+ defense against buffer overflows.
+
+version 1.2.19beta5 [May 21, 2007]
+ Fixed png_handle_tRNS() to only use the valid bits of tRNS value.
+ Changed handling of more unused parameters, to avoid compiler warnings.
+ Removed some PNG_CONST in pngwutil.c to avoid compiler warnings.
+
+version 1.2.19beta6 [May 22, 2007]
+ Added some #ifdef PNG_MMX_CODE_SUPPORTED where needed in pngvcrd.c
+ Added a special "_MSC_VER" case that defines png_snprintf to _snprintf
+
+version 1.2.19beta7 [May 22, 2007]
+ Squelched png_squelch_warnings() in pnggccrd.c and added
+ an #ifdef PNG_MMX_CODE_SUPPORTED block around the declarations that caused
+ the warnings that png_squelch_warnings was squelching.
+
+version 1.2.19beta8 [May 22, 2007]
+ Removed __MMX__ from test in pngconf.h.
+
+version 1.2.19beta9 [May 23, 2007]
+ Made png_squelch_warnings() available via PNG_SQUELCH_WARNINGS macro.
+ Revised png_squelch_warnings() so it might work.
+ Updated makefile.sgcc and makefile.solaris; added makefile.solaris-x86.
+
+version 1.2.19beta10 [May 24, 2007]
+ Resquelched png_squelch_warnings(), use "__attribute__((used))" instead.
+
+version 1.4.0beta1 [April 20, 2006]
+ Enabled iTXt support (changes png_struct, thus requires so-number change).
+ Cleaned up PNG_ASSEMBLER_CODE_SUPPORTED vs PNG_MMX_CODE_SUPPORTED
+ Eliminated PNG_1_0_X and PNG_1_2_X macros.
+ Removed deprecated functions png_read_init, png_write_init, png_info_init,
+ png_permit_empty_plte, png_set_gray_1_2_4_to_8, png_check_sig, and
+ removed the deprecated macro PNG_MAX_UINT.
+ Moved "PNG_INTERNAL" parts of png.h and pngconf.h into pngintrn.h
+ Removed many WIN32_WCE #ifdefs (Cosmin).
+ Reduced dependency on C-runtime library when on Windows (Simon-Pierre)
+ Replaced sprintf() with png_sprintf() (Simon-Pierre)
+
+version 1.4.0beta2 [April 20, 2006]
+ Revised makefiles and configure to avoid making links to libpng.so.*
+ Moved some leftover MMX-related defines from pngconf.h to pngintrn.h
+ Updated scripts/pngos2.def, pngw32.def, and projects/wince/png32ce.def
+
+version 1.4.0beta3 [May 10, 2006]
+ Updated scripts/pngw32.def to comment out MMX functions.
+ Added PNG_NO_GET_INT_32 and PNG_NO_SAVE_INT_32 macros.
+ Scripts/libpng.pc.in contained "configure" style version info and would
+ not work with makefiles.
+ Revised pngconf.h and added pngconf.h.in, so makefiles and configure can
+ pass defines to libpng and applications.
+
+version 1.4.0beta4 [May 11, 2006]
+ Revised configure.ac, Makefile.am, and many of the makefiles to write
+ their defines in pngconf.h.
+
+version 1.4.0beta5 [May 15, 2006]
+ Added a missing semicolon in Makefile.am and Makefile.in
+ Deleted extraneous square brackets from configure.ac
+
+version 1.4.0beta6 [June 2, 2006]
+ Increased sprintf buffer from 50 to 52 chars in pngrutil.c to avoid
+ buffer overflow.
+ Changed sonum from 0 to 1.
+ Removed unused prototype for png_check_sig() from png.h
+
+version 1.4.0beta7 [June 16, 2006]
+ Exported png_write_sig (Cosmin).
+ Optimized buffer in png_handle_cHRM() (Cosmin).
+ Set pHYs = 2835 x 2835 pixels per meter, and added
+ sCAL = 0.352778e-3 x 0.352778e-3 meters, in pngtest.png (Cosmin).
+ Added png_set_benign_errors(), png_benign_error(), png_chunk_benign_error().
+ Added typedef for png_int_32 and png_uint_32 on 64-bit systems.
+ Added "(unsigned long)" typecast on png_uint_32 variables in printf lists.
+
+version 1.4.0beta8 [June 22, 2006]
+ Added demonstration of user chunk support in pngtest.c, to support the
+ public sTER chunk and a private vpAg chunk.
+
+version 1.4.0beta9 [July 3, 2006]
+ Removed ordinals from scripts/pngw32.def and removed png_info_int and
+ png_set_gray_1_2_4_to_8 entries.
+ Inline call of png_get_uint_32() in png_get_uint_31().
+ Use png_get_uint_31() to get vpAg width and height in pngtest.c
+ Removed WINCE and Netware projects.
+ Removed standalone Y2KINFO file.
+
+version 1.4.0beta10 [July 12, 2006]
+ Eliminated automatic copy of pngconf.h to pngconf.h.in from configure and
+ some makefiles, because it was not working reliably. Instead, distribute
+ pngconf.h.in along with pngconf.h and cause configure and some of the
+ makefiles to update pngconf.h from pngconf.h.in.
+ Added pngconf.h to DEPENDENCIES in Makefile.am
+
+version 1.4.0beta11 [August 19, 2006]
+ Removed AC_FUNC_MALLOC from configure.ac.
+ Added a warning when writing iCCP profile with mismatched profile length.
+ Patched pnggccrd.c to assemble on x86_64 platforms.
+ Moved chunk header reading into a separate function png_read_chunk_header()
+ in pngrutil.c. The chunk header (len+sig) is now serialized in a single
+ operation (Cosmin).
+ Implemented support for I/O states. Added png_ptr member io_state, and
+ functions png_get_io_chunk_name() and png_get_io_state() in pngget.c
+ (Cosmin).
+ Added png_get_io_chunk_name and png_get_io_state to scripts/*.def (Cosmin).
+ Renamed scripts/pngw32.* to scripts/pngwin.* (Cosmin).
+ Removed the include directories and libraries from CFLAGS and LDFLAGS
+ in scripts/makefile.gcc (Cosmin).
+ Used png_save_uint_32() to set vpAg width and height in pngtest.c (Cosmin).
+ Cast to proper type when getting/setting vpAg units in pngtest.c (Cosmin).
+ Added pngintrn.h to the Visual C++ projects (Cosmin).
+ Removed scripts/list (Cosmin).
+ Updated copyright year in scripts/pngwin.def (Cosmin).
+ Removed PNG_TYPECAST_NULL and used standard NULL consistently (Cosmin).
+ Disallowed the user to redefine png_size_t, and enforced a consistent use
+ of png_size_t across libpng (Cosmin).
+ Changed the type of png_ptr->rowbytes, PNG_ROWBYTES() and friends
+ to png_size_t (Cosmin).
+ Removed png_convert_size() and replaced png_sizeof with sizeof (Cosmin).
+ Removed some unnecessary type casts (Cosmin).
+ Changed prototype of png_get_compression_buffer_size() and
+ png_set_compression_buffer_size() to work with png_size_t instead of
+ png_uint_32 (Cosmin).
+ Removed png_memcpy_check() and png_memset_check() (Cosmin).
+ Fixed a typo (png_byte --> png_bytep) in libpng.3 and libpng.txt (Cosmin).
+ Clarified that png_zalloc() does not clear the allocated memory,
+ and png_zalloc() and png_zfree() cannot be PNGAPI (Cosmin).
+ Renamed png_mem_size_t to png_alloc_size_t, fixed its definition in
+ pngconf.h, and used it in all memory allocation functions (Cosmin).
+ Renamed pngintrn.h to pngpriv.h, added a comment at the top of the file
+ mentioning that the symbols declared in that file are private, and
+ updated the scripts and the Visual C++ projects accordingly (Cosmin).
+ Removed circular references between pngconf.h and pngconf.h.in in
+ scripts/makefile.vc*win32 (Cosmin).
+ Removing trailing '.' from the warning and error messages (Cosmin).
+ Added pngdefs.h that is built by makefile or configure, instead of
+ pngconf.h.in (Glenn).
+ Detect and fix attempt to write wrong iCCP profile length.
+
+version 1.4.0beta12 [October 19, 2006]
+ Changed "logical" to "bitwise" in the documentation.
+ Work around Intel-Mac compiler bug by setting PNG_NO_MMX_CODE in pngconf.h
+ Add a typecast to stifle compiler warning in pngrutil.c
+
+version 1.4.0beta13 [November 10, 2006]
+ Fix potential buffer overflow in sPLT chunk handler.
+ Fix Makefile.am to not try to link to noexistent files.
+
+version 1.4.0beta14 [November 15, 2006]
+ Check all exported functions for NULL png_ptr.
+
+version 1.4.0beta15 [November 17, 2006]
+ Relocated two misplaced tests for NULL png_ptr.
+ Built Makefile.in with automake-1.9.6 instead of 1.9.2.
+ Build configure with autoconf-2.60 instead of 2.59
+ Add "install: all" in Makefile.am so "configure; make install" will work.
+
+version 1.4.0beta16 [November 17, 2006]
+ Added a typecast in png_zalloc().
+
+version 1.4.0beta17 [December 4, 2006]
+ Changed "new_key[79] = '\0';" to "(*new_key)[79] = '\0';" in pngwutil.c
+ Add "png_bytep" typecast to profile while calculating length in pngwutil.c
+
+version 1.4.0beta18 [December 7, 2006]
+ Added scripts/CMakeLists.txt
+
+version 1.4.0beta19 [May 16, 2007]
+ Revised scripts/CMakeLists.txt
+ Rebuilt configure and Makefile.in with newer tools.
+ Added conditional #undef jmpbuf in pngtest.c to undo #define in AIX headers.
+ Added scripts/makefile.nommx
+
+version 1.4.0beta20 [July 9, 2008]
+ Moved several PNG_HAVE_* macros from pngpriv.h to png.h because applications
+ calling set_unknown_chunk_location() need them.
+ Moved several macro definitions from pngpriv.h to pngconf.h
+ Merge with changes to the 1.2.X branch, as of 1.2.30beta04.
+ Deleted all use of the MMX assembler code and Intel-licensed optimizations.
+ Revised makefile.mingw
+
+version 1.4.0beta21 [July 21, 2008]
+ Moved local array "chunkdata" from pngrutil.c to the png_struct, so
+ it will be freed by png_read_destroy() in case of a read error (Kurt
+ Christensen).
+
+version 1.4.0beta22 [July 21, 2008]
+ Change "purpose" and "buffer" to png_ptr->chunkdata to avoid memory leaking.
+
+version 1.4.0beta23 [July 22, 2008]
+ Change "chunkdata = NULL" to "png_ptr->chunkdata = NULL" several places in
+ png_decompress_chunk().
+
+version 1.4.0beta24 [July 25, 2008]
+ Change all remaining "chunkdata" to "png_ptr->chunkdata" in
+ png_decompress_chunk(), and remove "chunkdata" from parameter list.
+ Put a call to png_check_chunk_name() in png_read_chunk_header().
+ Revised png_check_chunk_name() to reject a name with a lowercase 3rd byte.
+ Removed two calls to png_check_chunk_name() occuring later in the process.
+ Define PNG_NO_ERROR_NUMBERS by default in pngconf.h
+
+version 1.4.0beta25 [July 30, 2008]
+ Added a call to png_check_chunk_name() in pngpread.c
+ Reverted png_check_chunk_name() to accept a name with a lowercase 3rd byte.
+ Added png_push_have_buffer() function to pngpread.c
+ Eliminated PNG_BIG_ENDIAN_SUPPORTED and associated png_get_* macros.
+ Made inline expansion of png_get_*() optional with PNG_USE_READ_MACROS.
+ Eliminated all PNG_USELESS_TESTS and PNG_CORRECT_PALETTE_SUPPORTED code.
+ Synced contrib directory and configure files with libpng-1.2.30beta06.
+ Eliminated no-longer-used pngdefs.h (but it's still built in the makefiles)
+ Relocated a misplaced "#endif /* PNG_NO_WRITE_FILTER */" in pngwutil.c
+
+version 1.4.0beta26 [August 4, 2008]
+ Removed png_push_have_buffer() function in pngpread.c. It increased the
+ compiled library size slightly.
+ Changed "-Wall" to "-W -Wall" in the CFLAGS in all makefiles (Cosmin Truta)
+ Declared png_ptr "volatile" in pngread.c and pngwrite.c to avoid warnings.
+ Updated contrib/visupng/cexcept.h to version 2.0.1
+ Added PNG_LITERAL_CHARACTER macros for #, [, and ].
+
+version 1.4.0beta27 [August 5, 2008]
+ Revised usage of PNG_LITERAL_SHARP in pngerror.c.
+ Moved newline character from individual png_debug messages into the
+ png_debug macros.
+ Allow user to #define their own png_debug, png_debug1, and png_debug2.
+
+version 1.4.0beta28 [August 5, 2008]
+ Revised usage of PNG_LITERAL_SHARP in pngerror.c.
+ Added PNG_STRING_NEWLINE macro
+
+version 1.4.0beta29 [August 9, 2008]
+ Revised usage of PNG_STRING_NEWLINE to work on non-ISO compilers.
+ Added PNG_STRING_COPYRIGHT macro.
+ Added non-ISO versions of png_debug macros.
+
+version 1.4.0beta30 [August 14, 2008]
+ Added premultiplied alpha feature (Volker Wiendl).
+
+version 1.4.0beta31 [August 18, 2008]
+ Moved png_set_premultiply_alpha from pngtrans.c to pngrtran.c
+ Removed extra crc check at the end of png_handle_cHRM(). Bug introduced
+ in libpng-1.4.0beta20.
+
+version 1.4.0beta32 [August 19, 2008]
+ Added PNG_WRITE_FLUSH_SUPPORTED block around new png_flush() call.
+ Revised PNG_NO_STDIO version of png_write_flush()
+
+version 1.4.0beta33 [August 20, 2008]
+ Added png_get|set_chunk_cache_max() to limit the total number of sPLT,
+ text, and unknown chunks that can be stored.
+
+version 1.4.0beta34 [September 6, 2008]
+ Shortened tIME_string to 29 bytes in pngtest.c
+ Fixed off-by-one error introduced in png_push_read_zTXt() function in
+ libpng-1.2.30beta04/pngpread.c (Harald van Dijk)
+
+version 1.4.0beta35 [October 6, 2008]
+ Changed "trans_values" to "trans_color".
+ Changed so-number from 0 to 14. Some OS do not like 0.
+ Revised makefile.darwin to fix shared library numbering.
+ Change png_set_gray_1_2_4_to_8() to png_set_expand_gray_1_2_4_to_8()
+ in example.c (debian bug report)
+
+version 1.4.0beta36 [October 25, 2008]
+ Sync with tEXt vulnerability fix in libpng-1.2.33rc02.
+
+version 1.4.0beta37 [November 13, 2008]
+ Added png_check_cHRM in png.c and moved checking from pngget.c, pngrutil.c,
+ and pngwrite.c
+
+version 1.4.0beta38 [November 22, 2008]
+ Added check for zero-area RGB cHRM triangle in png_check_cHRM() and
+ png_check_cHRM_fixed().
+
+version 1.4.0beta39 [November 23, 2008]
+ Revised png_warning() to write its message on standard output by default
+ when warning_fn is NULL.
+
+version 1.4.0beta40 [November 24, 2008]
+ Eliminated png_check_cHRM(). Instead, always use png_check_cHRM_fixed().
+ In png_check_cHRM_fixed(), ensure white_y is > 0, and removed redundant
+ check for all-zero coordinates that is detected by the triangle check.
+
+version 1.4.0beta41 [November 26, 2008]
+ Fixed string vs pointer-to-string error in png_check_keyword().
+ Rearranged test expressions in png_check_cHRM_fixed() to avoid internal
+ overflows.
+ Added PNG_NO_CHECK_cHRM conditional.
+
+version 1.4.0beta42, 43 [December 1, 2008]
+ Merge png_debug with version 1.2.34beta04.
+
+version 1.4.0beta44 [December 6, 2008]
+ Removed redundant check for key==NULL before calling png_check_keyword()
+ to ensure that new_key gets initialized and removed extra warning
+ (Merge with version 1.2.34beta05 -- Arvan Pritchard).
+
+version 1.4.0beta45 [December 9, 2008]
+ In png_write_png(), respect the placement of the filler bytes in an earlier
+ call to png_set_filler() (Jim Barry).
+
+version 1.4.0beta46 [December 10, 2008]
+ Undid previous change and added PNG_TRANSFORM_STRIP_FILLER_BEFORE and
+ PNG_TRANSFORM_STRIP_FILLER_AFTER conditionals and deprecated
+ PNG_TRANSFORM_STRIP_FILLER (Jim Barry).
+
+version 1.4.0beta47 [December 15, 2008]
+ Turned off PNG_READ_DITHER_SUPPORTED by default.
+
+version 1.4.0beta48 [February 14, 2009]
+ Added new exported function png_calloc().
+ Combined several instances of png_malloc(); png_memset() into png_calloc().
+ Removed prototype for png_freeptr() that was added in libpng-1.4.0beta24
+ but was never defined.
+
+version 1.4.0beta49 [February 28, 2009]
+ Added png_fileno() macro to pngconf.h, used in pngwio.c
+ Corrected order of #ifdef's in png_debug definition in png.h
+ Fixed bug introduced in libpng-1.4.0beta48 with the memset arguments
+ for pcal_params.
+ Fixed order of #ifdef directives in the png_debug defines in png.h
+ (bug introduced in libpng-1.2.34/1.4.0beta29).
+ Revised comments in png_set_read_fn() and png_set_write_fn().
+
+version 1.4.0beta50 [March 18, 2009]
+ Use png_calloc() instead of png_malloc() to allocate big_row_buf when
+ reading an interlaced file, to avoid a possible UMR.
+ Undid revision of PNG_NO_STDIO version of png_write_flush(). Users
+ having trouble with fflush() can build with PNG_NO_WRITE_FLUSH defined
+ or supply their own flush_fn() replacement.
+ Revised libpng*.txt and png.h documentation about use of png_write_flush()
+ and png_set_write_fn().
+ Removed fflush() from pngtest.c.
+ Added "#define PNG_NO_WRITE_FLUSH" to contrib/pngminim/encoder/pngusr.h
+
+version 1.4.0beta51 [March 21, 2009]
+ Removed new png_fileno() macro from pngconf.h .
+
+version 1.4.0beta52 [March 27, 2009]
+ Relocated png_do_chop() ahead of building gamma tables in pngrtran.c
+ This avoids building 16-bit gamma tables unnecessarily.
+ Removed fflush() from pngtest.c.
+ Added "#define PNG_NO_WRITE_FLUSH" to contrib/pngminim/encoder/pngusr.h
+ Added a section on differences between 1.0.x and 1.2.x to libpng.3/libpng.txt
+
+version 1.4.0beta53 [April 1, 2009]
+ Removed some remaining MMX macros from pngpriv.h
+ Fixed potential memory leak of "new_name" in png_write_iCCP() (Ralph Giles)
+
+version 1.4.0beta54 [April 13, 2009]
+ Added "ifndef PNG_SKIP_SETJMP_CHECK" block in pngconf.h to allow
+ application code writers to bypass the check for multiple inclusion
+ of setjmp.h when they know that it is safe to ignore the situation.
+ Eliminated internal use of setjmp() in pngread.c and pngwrite.c
+ Reordered ancillary chunks in pngtest.png to be the same as what
+ pngtest now produces, and made some cosmetic changes to pngtest output.
+ Eliminated deprecated png_read_init_3() and png_write_init_3() functions.
+
+version 1.4.0beta55 [April 15, 2009]
+ Simplified error handling in pngread.c and pngwrite.c by putting
+ the new png_read_cleanup() and png_write_cleanup() functions inline.
+
+version 1.4.0beta56 [April 25, 2009]
+ Renamed "user_chunk_data" to "my_user_chunk_data" in pngtest.c to suppress
+ "shadowed declaration" warning from gcc-4.3.3.
+ Renamed "gamma" to "png_gamma" in pngset.c to avoid "shadowed declaration"
+ warning about a global "gamma" variable in math.h on some platforms.
+
+version 1.4.0beta57 [May 2, 2009]
+ Removed prototype for png_freeptr() that was added in libpng-1.4.0beta24
+ but was never defined (again).
+ Rebuilt configure scripts with autoconf-2.63 instead of 2.62
+ Removed pngprefs.h and MMX from makefiles
+
+version 1.4.0beta58 [May 14, 2009]
+ Changed pngw32.def to pngwin.def in makefile.mingw (typo was intruduced
+ in beta57).
+ Clarified usage of sig_bit versus sig_bit_p in example.c (Vincent Torri)
+
+version 1.4.0beta59 [May 15, 2009]
+ Reformated sources in libpng style (3-space intentation, comment format)
+ Fixed typo in libpng docs (PNG_FILTER_AVE should be PNG_FILTER_AVG)
+ Added sections about the git repository and our coding style to the
+ documentation
+ Relocated misplaced #endif in pngwrite.c, sCAL chunk handler.
+
+version 1.4.0beta60 [May 19, 2009]
+ Conditionally compile png_read_finish_row() which is not used by
+ progressive readers.
+ Added contrib/pngminim/preader to demonstrate building minimal progressive
+ decoder, based on contrib/gregbook with embedded libpng and zlib.
+
+version 1.4.0beta61 [May 20, 2009]
+ In contrib/pngminim/*, renamed "makefile.std" to "makefile", since there
+ is only one makefile in those directories, and revised the README files
+ accordingly.
+ More reformatting of comments, mostly to capitalize sentences.
+
+version 1.4.0beta62 [June 2, 2009]
+ Added "#define PNG_NO_WRITE_SWAP" to contrib/pngminim/encoder/pngusr.h
+ and "define PNG_NO_READ_SWAP" to decoder/pngusr.h and preader/pngusr.h
+ Reformatted several remaining "else statement" into two lines.
+ Added a section to the libpng documentation about using png_get_io_ptr()
+ in configure scripts to detect the presence of libpng.
+
+version 1.4.0beta63 [June 15, 2009]
+ Revised libpng*.txt and libpng.3 to mention calling png_set_IHDR()
+ multiple times and to specify the sample order in the tRNS chunk,
+ because the ISO PNG specification has a typo in the tRNS table.
+ Changed several PNG_UNKNOWN_CHUNK_SUPPORTED to
+ PNG_HANDLE_AS_UNKNOWN_SUPPORTED, to make the png_set_keep mechanism
+ available for ignoring known chunks even when not saving unknown chunks.
+ Adopted preference for consistent use of "#ifdef" and "#ifndef" versus
+ "#if defined()" and "if !defined()" where possible.
+
+version 1.4.0beta64 [June 24, 2009]
+ Eliminated PNG_LEGACY_SUPPORTED code.
+ Moved the various unknown chunk macro definitions outside of the
+ PNG_READ|WRITE_ANCILLARY_CHUNK_SUPPORTED blocks.
+
+version 1.4.0beta65 [June 26, 2009]
+ Added a reference to the libpng license in each file.
+
+version 1.4.0beta66 [June 27, 2009]
+ Refer to the libpng license instead of the libpng license in each file.
+
+version 1.4.0beta67 [July 6, 2009]
+ Relocated INVERT_ALPHA within png_read_png() and png_write_png().
+ Added high-level API transform PNG_TRANSFORM_GRAY_TO_RGB.
+ Added an "xcode" project to the projects directory (Alam Arias).
+
+version 1.4.0beta68 [July 19, 2009]
+ Avoid some tests in filter selection in pngwutil.c
+
+version 1.4.0beta69 [July 25, 2009]
+ Simplified the new filter-selection test. This runs faster in the
+ common "PNG_ALL_FILTERS" and PNG_FILTER_NONE cases.
+ Removed extraneous declaration from the new call to png_read_gray_to_rgb()
+ (bug introduced in libpng-1.4.0beta67).
+ Fixed up xcode project (Alam Arias)
+ Added a prototype for png_64bit_product() in png.c
+
+version 1.4.0beta70 [July 27, 2009]
+ Avoid a possible NULL dereference in debug build, in png_set_text_2().
+ (bug introduced in libpng-0.95, discovered by Evan Rouault)
+
+version 1.4.0beta71 [July 29, 2009]
+ Rebuilt configure scripts with autoconf-2.64.
+
+version 1.4.0beta72 [August 1, 2009]
+ Replaced *.tar.lzma with *.tar.xz in distribution. Get the xz codec
+ from <http://tukaani.org/xz>.
+
+version 1.4.0beta73 [August 1, 2009]
+ Reject attempt to write iCCP chunk with negative embedded profile length
+ (JD Chen)
+
+version 1.4.0beta74 [August 8, 2009]
+ Changed png_ptr and info_ptr member "trans" to "trans_alpha".
+
+version 1.4.0beta75 [August 21, 2009]
+ Removed an extra png_debug() recently added to png_write_find_filter().
+ Fixed incorrect #ifdef in pngset.c regarding unknown chunk support.
+
+version 1.4.0beta76 [August 22, 2009]
+ Moved an incorrectly located test in png_read_row() in pngread.c
+
+version 1.4.0beta77 [August 27, 2009]
+ Removed lpXYZ.tar.bz2 (with CRLF), KNOWNBUG, libpng-x.y.z-KNOWNBUG.txt,
+ and the "noconfig" files from the distribution.
+ Moved CMakeLists.txt from scripts into the main libpng directory.
+ Various bugfixes and improvements to CMakeLists.txt (Philip Lowman)
+
+version 1.4.0beta78 [August 31, 2009]
+ Converted all PNG_NO_* tests to PNG_*_SUPPORTED everywhere except pngconf.h
+ Eliminated PNG_NO_FREE_ME and PNG_FREE_ME_SUPPORTED macros.
+ Use png_malloc plus a loop instead of png_calloc() to initialize
+ row_pointers in png_read_png().
+
+version 1.4.0beta79 [September 1, 2009]
+ Eliminated PNG_GLOBAL_ARRAYS and PNG_LOCAL_ARRAYS; always use local arrays.
+ Eliminated PNG_CALLOC_SUPPORTED macro and always provide png_calloc().
+
+version 1.4.0beta80 [September 17, 2009]
+ Removed scripts/libpng.icc
+ Changed typecast of filler from png_byte to png_uint_16 in png_set_filler().
+ (Dennis Gustafsson)
+ Fixed typo introduced in beta78 in pngtest.c ("#if def " should be "#ifdef ")
+
+version 1.4.0beta81 [September 23, 2009]
+ Eliminated unused PNG_FLAG_FREE_* defines from pngpriv.h
+ Expanded TAB characters in pngrtran.c
+ Removed PNG_CONST from all "PNG_CONST PNG_CHNK" declarations to avoid
+ compiler complaints about doubly declaring things "const".
+ Changed all "#if [!]defined(X)" to "if[n]def X" where possible.
+ Eliminated unused png_ptr->row_buf_size
+
+version 1.4.0beta82 [September 25, 2009]
+ Moved redundant IHDR checking into new png_check_IHDR() in png.c
+ and report all errors found in the IHDR data.
+ Eliminated useless call to png_check_cHRM() from pngset.c
+
+version 1.4.0beta83 [September 25, 2009]
+ Revised png_check_IHDR() to eliminate bogus complaint about filter_type.
+
+version 1.4.0beta84 [September 30, 2009]
+ Fixed some inconsistent indentation in pngconf.h
+ Revised png_check_IHDR() to add a test for width variable less than 32-bit.
+
+version 1.4.0beta85 [October 1, 2009]
+ Revised png_check_IHDR() again, to check info_ptr members instead of
+ the contents of the returned parameters.
+
+version 1.4.0beta86 [October 9, 2009]
+ Updated the "xcode" project (Alam Arias).
+ Eliminated a shadowed declaration of "pp" in png_handle_sPLT().
+
+version 1.4.0rc01 [October 19, 2009]
+ Trivial cosmetic changes.
+
+version 1.4.0beta87 [October 30, 2009]
+ Moved version 1.4.0 back into beta.
+
+version 1.4.0beta88 [October 30, 2009]
+ Revised libpng*.txt section about differences between 1.2.x and 1.4.0
+ because most of the new features have now been ported back to 1.2.41
+
+version 1.4.0beta89 [November 1, 2009]
+ More bugfixes and improvements to CMakeLists.txt (Philip Lowman)
+ Removed a harmless extra png_set_invert_alpha() from pngwrite.c
+ Apply png_user_chunk_cache_max within png_decompress_chunk().
+ Merged libpng-1.2.41.txt with libpng-1.4.0.txt where appropriate.
+
+version 1.4.0beta90 [November 2, 2009]
+ Removed all remaining WIN32_WCE #ifdefs except those involving the
+ time.h "tm" structure
+
+version 1.4.0beta91 [November 3, 2009]
+ Updated scripts/pngw32.def and projects/wince/png32ce.def
+ Copied projects/wince/png32ce.def to the scripts directory.
+ Added scripts/makefile.wce
+ Patched ltmain.sh for wince support.
+ Added PNG_CONVERT_tIME_SUPPORTED macro.
+
+version 1.4.0beta92 [November 4, 2009]
+ Make inclusion of time.h in pngconf.h depend on PNG_CONVERT_tIME_SUPPORTED
+ Make #define PNG_CONVERT_tIME_SUPPORTED depend on PNG_WRITE_tIME_SUPPORTED
+ Revised libpng*.txt to describe differences from 1.2.40 to 1.4.0 (instead
+ of differences from 1.2.41 to 1.4.0)
+
+version 1.4.0beta93 [November 7, 2009]
+ Added PNG_DEPSTRUCT, PNG_DEPRECATED, PNG_USE_RESULT, PNG_NORETURN, and
+ PNG_ALLOCATED macros to detect deprecated direct access to the
+ png_struct or info_struct members and other deprecated usage in
+ applications (John Bowler).
+ Updated scripts/makefile* to add "-DPNG_CONFIGURE_LIBPNG" to CFLAGS,
+ to prevent warnings about direct access to png structs by libpng
+ functions while building libpng. They need to be tested, especially
+ those using compilers other than gcc.
+ Updated projects/visualc6 and visualc71 with "/d PNG_CONFIGURE_LIBPNG".
+ They should work but still need to be updated to remove
+ references to pnggccrd.c or pngvcrd.c and ASM building.
+ Added README.txt to the beos, cbuilder5, netware, and xcode projects warning
+ that they need to be updated, to remove references to pnggccrd.c and
+ pngvcrd.c and to depend on pngpriv.h
+ Removed three direct references to read_info_ptr members in pngtest.c
+ that were detected by the new PNG_DEPSTRUCT macro.
+ Moved the png_debug macro definitions and the png_read_destroy(),
+ png_write_destroy() and png_far_to_near() prototypes from png.h
+ to pngpriv.h (John Bowler)
+ Moved the synopsis lines for png_read_destroy(), png_write_destroy()
+ png_debug(), png_debug1(), and png_debug2() from libpng.3 to libpngpf.3.
+
+version 1.4.0beta94 [November 9, 2009]
+ Removed the obsolete, unused pnggccrd.c and pngvcrd.c files.
+ Updated CMakeLists.txt to add "-DPNG_CONFIGURE_LIBPNG" to the definitions.
+ Removed dependency of pngtest.o on pngpriv.h in the makefiles.
+ Only #define PNG_DEPSTRUCT, etc. in pngconf.h if not already defined.
+
+version 1.4.0beta95 [November 10, 2009]
+ Changed png_check_sig() to !png_sig_cmp() in contrib programs.
+ Added -DPNG_CONFIGURE_LIBPNG to contrib/pngminm/*/makefile
+ Changed png_check_sig() to !png_sig_cmp() in contrib programs.
+ Corrected the png_get_IHDR() call in contrib/gregbook/readpng2.c
+ Changed pngminim/*/gather.sh to stop trying to remove pnggccrd.c and pngvcrd.c
+ Added dependency on pngpriv.h in contrib/pngminim/*/makefile
+
+version 1.4.0beta96 [November 12, 2009]
+ Renamed scripts/makefile.wce to scripts/makefile.cegcc
+ Revised Makefile.am to use libpng.sys while building libpng.so
+ so that only PNG_EXPORT functions are exported.
+ Removed the deprecated png_check_sig() function/macro.
+ Removed recently removed function names from scripts/*.def
+ Revised pngtest.png to put chunks in the same order written by pngtest
+ (evidently the same change made in libpng-1.0beta54 was lost).
+ Added PNG_PRIVATE macro definition in pngconf.h for possible future use.
+
+version 1.4.0beta97 [November 13, 2009]
+ Restored pngtest.png to the libpng-1.4.0beta7 version.
+ Removed projects/beos and netware.txt; no one seems to be supporting them.
+ Revised Makefile.in
+
+version 1.4.0beta98 [November 13, 2009]
+ Added the "xcode" project to zip distributions,
+ Fixed a typo in scripts/pngwin.def introduced in beta97.
+
+version 1.4.0beta99 [November 14, 2009]
+ Moved libpng-config.in and libpng.pc-configure.in out of the scripts
+ directory, to libpng-config.in and libpng-pc.in, respectively, and
+ modified Makefile.am and configure.ac accordingly. Now "configure"
+ needs nothing from the "scripts" directory.
+ Avoid redefining PNG_CONST in pngconf.h
+
+version 1.4.0beta100 [November 14, 2009]
+ Removed ASM builds from projects/visualc6 and projects/visualc71
+ Removed scripts/makefile.nommx and makefile.vcawin32
+ Revised CMakeLists.txt to account for new location of libpng-config.in
+ and libpng-pc.in
+ Updated INSTALL to reflect removal and relocation of files.
+
+version 1.4.0beta101 [November 14, 2009]
+ Restored the binary files (*.jpg, *.png, some project files) that were
+ accidentally deleted from the zip and 7z distributions when the xcode
+ project was added.
+
+version 1.4.0beta102 [November 18, 2009]
+ Added libpng-config.in and libpng-pc.in to the zip and 7z distributions.
+ Fixed a typo in projects/visualc6/pngtest.dsp, introduced in beta100.
+ Moved descriptions of makefiles and other scripts out of INSTALL into
+ scripts/README.txt
+ Updated the copyright year in scripts/pngwin.rc from 2006 to 2009.
+
+version 1.4.0beta103 [November 21, 2009]
+ Removed obsolete comments about ASM from projects/visualc71/README_zlib.txt
+ Align row_buf on 16-byte boundary in memory.
+ Restored the PNG_WRITE_FLUSH_AFTER_IEND_SUPPORTED guard around the call
+ to png_flush() after png_write_IEND(). See 1.4.0beta32, 1.4.0beta50
+ changes above and 1.2.30, 1.2.30rc01 and rc03 in 1.2.41 CHANGES. Someone
+ needs this feature.
+ Make the 'png_jmpbuf' macro expand to a call that records the correct
+ longjmp function as well as returning a pointer to the setjmp
+ jmp_buf buffer, and marked direct access to jmpbuf 'deprecated'.
+ (John Bowler)
+
+version 1.4.0beta104 [November 22, 2009]
+ Removed png_longjmp_ptr from scripts/*.def and libpng.3
+ Rebuilt configure scripts with autoconf-2.65
+
+version 1.4.0beta105 [November 25, 2009]
+ Use fast integer PNG_DIVIDE_BY_255() or PNG_DIVIDE_BY_65535()
+ to accomplish alpha premultiplication when
+ PNG_READ_COMPOSITE_NODIV_SUPPORTED is defined.
+ Changed "/255" to "/255.0" in background calculations to make it clear
+ that the 255 is used as a double.
+
+version 1.4.0beta106 [November 27, 2009]
+ Removed premultiplied alpha feature.
+
+version 1.4.0beta107 [December 4, 2009]
+ Updated README
+ Added "#define PNG_NO_PEDANTIC_WARNINGS" in the libpng source files.
+ Removed "-DPNG_CONFIGURE_LIBPNG" from the makefiles and projects.
+ Revised scripts/makefile.netbsd, makefile.openbsd, and makefile.sco
+ to put png.h and pngconf.h in $prefix/include, like the other scripts,
+ instead of in $prefix/include/libpng. Also revised makefile.sco
+ to put them in $prefix/include/libpng14 instead of in
+ $prefix/include/libpng/libpng14.
+
+version 1.4.0beta108 [December 11, 2009]
+ Removed leftover "-DPNG_CONFIGURE_LIBPNG" from contrib/pngminim/*/makefile
+ Relocated png_do_chop() to its original position in pngrtran.c; the
+ change in version 1.2.41beta08 caused transparency to be handled wrong
+ in some 16-bit datastreams (Yusaku Sugai).
+
+version 1.4.0beta109 [December 13, 2009]
+ Added "bit_depth" parameter to the private png_build_gamma_table() function.
+ Pass bit_depth=8 to png_build_gamma_table() when bit_depth is 16 but the
+ PNG_16_TO_8 transform has been set, to avoid unnecessary build of 16-bit
+ tables.
+
+version 1.4.0rc02 [December 20, 2009]
+ Declared png_cleanup_needed "volatile" in pngread.c and pngwrite.c
+
+version 1.4.0rc03 [December 22, 2009]
+ Renamed libpng-pc.in back to libpng.pc.in and revised CMakeLists.txt
+ (revising the change in 1.4.0beta99)
+
+version 1.4.0rc04 [December 25, 2009]
+ Swapped PNG_UNKNOWN_CHUNKS_SUPPORTED and PNG_HANDLE_AS_UNKNOWN_SUPPORTED
+ in pngset.c to be consistent with other changes in version 1.2.38.
+
+version 1.4.0rc05 [December 25, 2009]
+ Changed "libpng-pc.in" to "libpng.pc.in" in configure.ac, configure, and
+ Makefile.in to be consistent with changes in libpng-1.4.0rc03
+
+version 1.4.0rc06 [December 29, 2009]
+ Reverted the gamma_table changes from libpng-1.4.0beta109.
+ Fixed some indentation errors.
+
+version 1.4.0rc07 [January 1, 2010]
+ Revised libpng*.txt and libpng.3 about 1.2.x->1.4.x differences.
+ Use png_calloc() instead of png_malloc(); png_memset() in pngrutil.c
+ Update copyright year to 2010.
+
+version 1.4.0rc08 [January 2, 2010]
+ Avoid deprecated references to png_ptr-io_ptr and png_ptr->error_ptr
+ in pngtest.c
+
+version 1.4.0 [January 3, 2010]
+ No changes.
+
+Send comments/corrections/commendations to png-mng-implement at lists.sf.net
+(subscription required; visit
+https://lists.sourceforge.net/lists/listinfo/png-mng-implement
+to subscribe)
+or to glennrp at users.sourceforge.net
+
+Glenn R-P
+*/ }
+#endif
diff --git a/src/3rdparty/libpng/CMakeLists.txt b/src/3rdparty/libpng/CMakeLists.txt
new file mode 100644
index 0000000..a95e0ec
--- /dev/null
+++ b/src/3rdparty/libpng/CMakeLists.txt
@@ -0,0 +1,265 @@
+cmake_minimum_required(VERSION 2.4.3)
+if(UNIX AND NOT DEFINED CMAKE_BUILD_TYPE)
+ set(CMAKE_BUILD_TYPE "RelWithDebInfo" CACHE STRING "Choose the type of
+ build, options are: None(CMAKE_CXX_FLAGS or CMAKE_C_FLAGS used) Debug
+ Release RelWithDebInfo MinSizeRel.")
+endif()
+
+project(PNG C)
+enable_testing()
+
+# Copyright (C) 2007-2010 Glenn Randers-Pehrson
+
+# This code is released under the libpng license.
+# For conditions of distribution and use, see the disclaimer
+# and license in png.h
+
+set(PNGLIB_MAJOR 1)
+set(PNGLIB_MINOR 4)
+set(PNGLIB_RELEASE 0)
+set(PNGLIB_NAME libpng${PNGLIB_MAJOR}${PNGLIB_MINOR})
+set(PNGLIB_VERSION ${PNGLIB_MAJOR}.${PNGLIB_MINOR}.${PNGLIB_RELEASE})
+
+set(CMAKE_ALLOW_LOOSE_LOOP_CONSTRUCTS true)
+
+# needed packages
+find_package(ZLIB REQUIRED)
+include_directories(${ZLIB_INCLUDE_DIR})
+
+if(NOT WIN32)
+ find_library(M_LIBRARY
+ NAMES m
+ PATHS /usr/lib /usr/local/lib
+ )
+ if(NOT M_LIBRARY)
+ message(STATUS
+ "math library 'libm' not found - floating point support disabled")
+ endif()
+else()
+ # not needed on windows
+ set(M_LIBRARY "")
+endif()
+
+# COMMAND LINE OPTIONS
+if(DEFINED PNG_SHARED)
+ option(PNG_SHARED "Build shared lib" ${PNG_SHARED})
+else()
+ option(PNG_SHARED "Build shared lib" ON)
+endif()
+if(DEFINED PNG_STATIC)
+ option(PNG_STATIC "Build static lib" ${PNG_STATIC})
+else()
+ option(PNG_STATIC "Build static lib" ON)
+endif()
+
+if(MINGW)
+ option(PNG_TESTS "Build pngtest" NO)
+else(MINGW)
+ option(PNG_TESTS "Build pngtest" YES)
+endif(MINGW)
+
+option(PNG_NO_CONSOLE_IO "FIXME" YES)
+option(PNG_NO_STDIO "FIXME" YES)
+option(PNG_DEBUG "Build with debug output" NO)
+option(PNGARG "FIXME" YES)
+#TODO:
+# PNG_CONSOLE_IO_SUPPORTED
+
+# maybe needs improving, but currently I don't know when we can enable what :)
+set(png_asm_tmp "OFF")
+if(NOT WIN32)
+ find_program(uname_executable NAMES uname PATHS /bin /usr/bin /usr/local/bin)
+ if(uname_executable)
+ EXEC_PROGRAM(${uname_executable} ARGS --machine OUTPUT_VARIABLE uname_output)
+ if("uname_output" MATCHES "^.*i[1-9]86.*$")
+ set(png_asm_tmp "ON")
+ else("uname_output" MATCHES "^.*i[1-9]86.*$")
+ set(png_asm_tmp "OFF")
+ endif("uname_output" MATCHES "^.*i[1-9]86.*$")
+ endif(uname_executable)
+else()
+ # this env var is normally only set on win64
+ SET(TEXT "ProgramFiles(x86)")
+ if("$ENV{${TEXT}}" STREQUAL "")
+ set(png_asm_tmp "ON")
+ endif("$ENV{${TEXT}}" STREQUAL "")
+endif()
+
+# SET LIBNAME
+set(PNG_LIB_NAME png${PNGLIB_MAJOR}${PNGLIB_MINOR})
+
+# to distinguish between debug and release lib
+set(CMAKE_DEBUG_POSTFIX "d")
+
+
+# OUR SOURCES
+set(libpng_sources
+ png.h
+ pngconf.h
+ pngpriv.h
+ png.c
+ pngerror.c
+ pngget.c
+ pngmem.c
+ pngpread.c
+ pngread.c
+ pngrio.c
+ pngrtran.c
+ pngrutil.c
+ pngset.c
+ pngtrans.c
+ pngwio.c
+ pngwrite.c
+ pngwtran.c
+ pngwutil.c
+)
+set(pngtest_sources
+ pngtest.c
+)
+# SOME NEEDED DEFINITIONS
+
+add_definitions(-DPNG_CONFIGURE_LIBPNG)
+
+if(MSVC)
+ add_definitions(-DPNG_NO_MODULEDEF -D_CRT_SECURE_NO_DEPRECATE)
+endif(MSVC)
+
+if(PNG_SHARED OR NOT MSVC)
+ #if building msvc static this has NOT to be defined
+ add_definitions(-DZLIB_DLL)
+endif()
+
+if(PNG_CONSOLE_IO_SUPPORTED)
+ add_definitions(-DPNG_CONSOLE_IO_SUPPORTED)
+endif()
+
+if(PNG_NO_CONSOLE_IO)
+ add_definitions(-DPNG_NO_CONSOLE_IO)
+endif()
+
+if(PNG_NO_STDIO)
+ add_definitions(-DPNG_NO_STDIO)
+endif()
+
+if(PNG_DEBUG)
+ add_definitions(-DPNG_DEBUG)
+endif()
+
+if(NOT M_LIBRARY AND NOT WIN32)
+ add_definitions(-DPNG_NO_FLOATING_POINT_SUPPORTED)
+endif()
+
+# NOW BUILD OUR TARGET
+include_directories(${PNG_SOURCE_DIR} ${ZLIB_INCLUDE_DIR})
+
+if(PNG_SHARED)
+ add_library(${PNG_LIB_NAME} SHARED ${libpng_sources})
+ if(MSVC)
+ # msvc does not append 'lib' - do it here to have consistent name
+ set_target_properties(${PNG_LIB_NAME} PROPERTIES PREFIX "lib")
+ endif()
+ target_link_libraries(${PNG_LIB_NAME} ${ZLIB_LIBRARY} ${M_LIBRARY})
+endif()
+
+if(PNG_STATIC)
+# does not work without changing name
+ set(PNG_LIB_NAME_STATIC ${PNG_LIB_NAME}_static)
+ add_library(${PNG_LIB_NAME_STATIC} STATIC ${libpng_sources})
+ if(MSVC)
+ # msvc does not append 'lib' - do it here to have consistent name
+ set_target_properties(${PNG_LIB_NAME_STATIC} PROPERTIES PREFIX "lib")
+ endif()
+endif()
+
+
+if(PNG_SHARED AND WIN32)
+ set_target_properties(${PNG_LIB_NAME} PROPERTIES DEFINE_SYMBOL PNG_BUILD_DLL)
+endif()
+
+if(PNG_TESTS AND PNG_SHARED)
+# does not work with msvc due to png_lib_ver issue
+ add_executable(pngtest ${pngtest_sources})
+ target_link_libraries(pngtest ${PNG_LIB_NAME})
+ add_test(pngtest pngtest ${PNG_SOURCE_DIR}/pngtest.png)
+endif()
+
+
+# CREATE PKGCONFIG FILES
+# we use the same files like ./configure, so we have to set its vars
+set(prefix ${CMAKE_INSTALL_PREFIX})
+set(exec_prefix ${CMAKE_INSTALL_PREFIX})
+set(libdir ${CMAKE_INSTALL_PREFIX}/lib)
+set(includedir ${CMAKE_INSTALL_PREFIX}/include)
+
+configure_file(${PNG_SOURCE_DIR}/libpng.pc.in
+ ${PNG_BINARY_DIR}/libpng.pc)
+configure_file(${PNG_SOURCE_DIR}/libpng-config.in
+ ${PNG_BINARY_DIR}/libpng-config)
+configure_file(${PNG_SOURCE_DIR}/libpng.pc.in
+ ${PNG_BINARY_DIR}/${PNGLIB_NAME}.pc)
+configure_file(${PNG_SOURCE_DIR}/libpng-config.in
+ ${PNG_BINARY_DIR}/${PNGLIB_NAME}-config)
+
+# SET UP LINKS
+if(PNG_SHARED)
+ set_target_properties(${PNG_LIB_NAME} PROPERTIES
+# VERSION 14.${PNGLIB_RELEASE}.1.4.0
+ VERSION 14.${PNGLIB_RELEASE}.0
+ SOVERSION 14
+ CLEAN_DIRECT_OUTPUT 1)
+endif()
+if(PNG_STATIC)
+ if(NOT WIN32)
+ # that's uncool on win32 - it overwrites our static import lib...
+ set_target_properties(${PNG_LIB_NAME_STATIC} PROPERTIES
+ OUTPUT_NAME ${PNG_LIB_NAME}
+ CLEAN_DIRECT_OUTPUT 1)
+ endif()
+endif()
+
+# INSTALL
+if(NOT SKIP_INSTALL_LIBRARIES AND NOT SKIP_INSTALL_ALL )
+ if(PNG_SHARED)
+ install(TARGETS ${PNG_LIB_NAME}
+ RUNTIME DESTINATION bin
+ LIBRARY DESTINATION lib
+ ARCHIVE DESTINATION lib)
+ endif()
+ if(PNG_STATIC)
+ install(TARGETS ${PNG_LIB_NAME_STATIC}
+ LIBRARY DESTINATION lib
+ ARCHIVE DESTINATION lib)
+ endif()
+endif()
+
+if(NOT SKIP_INSTALL_HEADERS AND NOT SKIP_INSTALL_ALL )
+ install(FILES png.h pngconf.h pngpriv.h DESTINATION include)
+ install(FILES png.h pngconf.h pngpriv.h DESTINATION include/${PNGLIB_NAME})
+endif()
+if(NOT SKIP_INSTALL_EXECUTABLES AND NOT SKIP_INSTALL_ALL )
+ install(PROGRAMS ${PNG_BINARY_DIR}/libpng-config DESTINATION bin)
+ install(PROGRAMS ${PNG_BINARY_DIR}/${PNGLIB_NAME}-config DESTINATION bin)
+endif()
+if(NOT SKIP_INSTALL_FILES AND NOT SKIP_INSTALL_ALL )
+ install(FILES libpng.3 libpngpf.3 DESTINATION man/man3)
+ install(FILES png.5 DESTINATION man/man5)
+ install(FILES ${PNG_BINARY_DIR}/libpng.pc DESTINATION lib/pkgconfig)
+ install(FILES ${PNG_BINARY_DIR}/libpng-config DESTINATION bin)
+ install(FILES ${PNG_BINARY_DIR}/${PNGLIB_NAME}.pc DESTINATION lib/pkgconfig)
+ install(FILES ${PNG_BINARY_DIR}/${PNGLIB_NAME}-config DESTINATION bin)
+endif()
+
+# what's with libpng.txt and all the extra files?
+
+
+# UNINSTALL
+# do we need this?
+
+
+# DIST
+# do we need this?
+
+# to create msvc import lib for mingw compiled shared lib
+# pexports libpng.dll > libpng.def
+# lib /def:libpng.def /machine:x86
+
diff --git a/src/3rdparty/libpng/INSTALL b/src/3rdparty/libpng/INSTALL
new file mode 100644
index 0000000..79f02e77
--- /dev/null
+++ b/src/3rdparty/libpng/INSTALL
@@ -0,0 +1,143 @@
+
+Installing libpng version 1.4.0 - January 3, 2010
+
+On Unix/Linux and similar systems, you can simply type
+
+ ./configure [--prefix=/path]
+ make check
+ make install
+
+and ignore the rest of this document.
+
+If configure does not work on your system and you have a reasonably
+up-to-date set of tools, running ./autogen.sh before running ./configure
+may fix the problem. You can also run the individual commands in
+autogen.sh with the --force option, if supported by your version of
+the tools. If you run 'libtoolize --force', though, this will replace
+the distributed, patched, version of ltmain.sh with an unpatched version
+and your shared library builds may fail to produce libraries with the
+correct version numbers.
+
+Instead, you can use one of the custom-built makefiles in the
+"scripts" directory
+
+ cp scripts/makefile.system makefile
+ make test
+ make install
+
+The files that are presently available in the scripts directory
+are listed and described in scripts/README.txt.
+
+Or you can use one of the "projects" in the "projects" directory.
+
+Before installing libpng, you must first install zlib, if it
+is not already on your system. zlib can usually be found
+wherever you got libpng. zlib can be placed in another directory,
+at the same level as libpng.
+
+If you want to use "cmake" (see www.cmake.org), type
+
+ cmake . -DCMAKE_INSTALL_PREFIX=/path
+ make
+ make install
+
+If your system already has a preinstalled zlib you will still need
+to have access to the zlib.h and zconf.h include files that
+correspond to the version of zlib that's installed.
+
+You can rename the directories that you downloaded (they
+might be called "libpng-1.4.0" or "libpng14" and "zlib-1.2.3"
+or "zlib123") so that you have directories called "zlib" and "libpng".
+
+Your directory structure should look like this:
+
+ .. (the parent directory)
+ libpng (this directory)
+ INSTALL (this file)
+ README
+ *.h
+ *.c
+ CMakeLists.txt => "cmake" script
+ configuration files:
+ configure.ac, configure, Makefile.am, Makefile.in,
+ autogen.sh, config.guess, ltmain.sh, missing,
+ aclocal.m4, config.h.in, config.sub,
+ depcomp, install-sh, mkinstalldirs, test-pngtest.sh
+ contrib
+ gregbook
+ pngminim
+ pngminus
+ pngsuite
+ visupng
+ projects
+ cbuilder5 (Borland)
+ visualc6 (msvc)
+ visualc71
+ xcode
+ scripts
+ makefile.*
+ *.def (module definition files)
+ pngtest.png
+ etc.
+ zlib
+ README
+ *.h
+ *.c
+ contrib
+ etc.
+
+If the line endings in the files look funny, you may wish to get the other
+distribution of libpng. It is available in both tar.gz (UNIX style line
+endings) and zip (DOS style line endings) formats.
+
+If you are building libpng with MSVC, you can enter the
+libpng projects\visualc6 or visualc71 directory and follow the instructions
+in README.txt.
+
+Otherwise enter the zlib directory and follow the instructions in zlib/README,
+then come back here and run "configure" or choose the appropriate
+makefile.sys in the scripts directory.
+
+Copy the file (or files) that you need from the
+scripts directory into this directory, for example
+
+ MSDOS example: copy scripts\makefile.msc makefile
+ UNIX example: cp scripts/makefile.std makefile
+
+Read the makefile to see if you need to change any source or
+target directories to match your preferences.
+
+Then read pngconf.h to see if you want to make any configuration
+changes.
+
+Then just run "make" which will create the libpng library in
+this directory and "make test" which will run a quick test that reads
+the "pngtest.png" file and writes a "pngout.png" file that should be
+identical to it. Look for "9782 zero samples" in the output of the
+test. For more confidence, you can run another test by typing
+"pngtest pngnow.png" and looking for "289 zero samples" in the output.
+Also, you can run "pngtest -m contrib/pngsuite/*.png" and compare
+your output with the result shown in contrib/pngsuite/README.
+
+Most of the makefiles will allow you to run "make install" to
+put the library in its final resting place (if you want to
+do that, run "make install" in the zlib directory first if necessary).
+Some also allow you to run "make test-installed" after you have
+run "make install".
+
+If you encounter a compiler error message complaining about the
+lines
+
+ __png.h__ already includes setjmp.h;
+ __dont__ include it again.;
+
+this means you have compiled another module that includes setjmp.h,
+which is hazardous because the two modules might not include exactly
+the same setjmp.h. If you are sure that you know what you are doing
+and that they are exactly the same, then you can comment out or
+delete the two lines. Better yet, use the cexcept interface
+instead, as demonstrated in contrib/visupng of the libpng distribution.
+
+Further information can be found in the README and libpng.txt
+files, in the individual makefiles, in png.h, and the manual pages
+libpng.3 and png.5.
diff --git a/src/3rdparty/libpng/LICENSE b/src/3rdparty/libpng/LICENSE
new file mode 100644
index 0000000..7462ec3
--- /dev/null
+++ b/src/3rdparty/libpng/LICENSE
@@ -0,0 +1,111 @@
+
+This copy of the libpng notices is provided for your convenience. In case of
+any discrepancy between this copy and the notices in the file png.h that is
+included in the libpng distribution, the latter shall prevail.
+
+COPYRIGHT NOTICE, DISCLAIMER, and LICENSE:
+
+If you modify libpng you may insert additional notices immediately following
+this sentence.
+
+This code is released under the libpng license.
+
+libpng versions 1.2.6, August 15, 2004, through 1.4.0, January 3, 2010, are
+Copyright (c) 2004, 2006-2007 Glenn Randers-Pehrson, and are
+distributed according to the same disclaimer and license as libpng-1.2.5
+with the following individual added to the list of Contributing Authors
+
+ Cosmin Truta
+
+libpng versions 1.0.7, July 1, 2000, through 1.2.5 - October 3, 2002, are
+Copyright (c) 2000-2002 Glenn Randers-Pehrson, and are
+distributed according to the same disclaimer and license as libpng-1.0.6
+with the following individuals added to the list of Contributing Authors
+
+ Simon-Pierre Cadieux
+ Eric S. Raymond
+ Gilles Vollant
+
+and with the following additions to the disclaimer:
+
+ There is no warranty against interference with your enjoyment of the
+ library or against infringement. There is no warranty that our
+ efforts or the library will fulfill any of your particular purposes
+ or needs. This library is provided with all faults, and the entire
+ risk of satisfactory quality, performance, accuracy, and effort is with
+ the user.
+
+libpng versions 0.97, January 1998, through 1.0.6, March 20, 2000, are
+Copyright (c) 1998, 1999 Glenn Randers-Pehrson, and are
+distributed according to the same disclaimer and license as libpng-0.96,
+with the following individuals added to the list of Contributing Authors:
+
+ Tom Lane
+ Glenn Randers-Pehrson
+ Willem van Schaik
+
+libpng versions 0.89, June 1996, through 0.96, May 1997, are
+Copyright (c) 1996, 1997 Andreas Dilger
+Distributed according to the same disclaimer and license as libpng-0.88,
+with the following individuals added to the list of Contributing Authors:
+
+ John Bowler
+ Kevin Bracey
+ Sam Bushell
+ Magnus Holmgren
+ Greg Roelofs
+ Tom Tanner
+
+libpng versions 0.5, May 1995, through 0.88, January 1996, are
+Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
+
+For the purposes of this copyright and license, "Contributing Authors"
+is defined as the following set of individuals:
+
+ Andreas Dilger
+ Dave Martindale
+ Guy Eric Schalnat
+ Paul Schmidt
+ Tim Wegner
+
+The PNG Reference Library is supplied "AS IS". The Contributing Authors
+and Group 42, Inc. disclaim all warranties, expressed or implied,
+including, without limitation, the warranties of merchantability and of
+fitness for any purpose. The Contributing Authors and Group 42, Inc.
+assume no liability for direct, indirect, incidental, special, exemplary,
+or consequential damages, which may result from the use of the PNG
+Reference Library, even if advised of the possibility of such damage.
+
+Permission is hereby granted to use, copy, modify, and distribute this
+source code, or portions hereof, for any purpose, without fee, subject
+to the following restrictions:
+
+1. The origin of this source code must not be misrepresented.
+
+2. Altered versions must be plainly marked as such and must not
+ be misrepresented as being the original source.
+
+3. This Copyright notice may not be removed or altered from any
+ source or altered source distribution.
+
+The Contributing Authors and Group 42, Inc. specifically permit, without
+fee, and encourage the use of this source code as a component to
+supporting the PNG file format in commercial products. If you use this
+source code in a product, acknowledgment is not required but would be
+appreciated.
+
+
+A "png_get_copyright" function is available, for convenient use in "about"
+boxes and the like:
+
+ printf("%s",png_get_copyright(NULL));
+
+Also, the PNG logo (in PNG format, of course) is supplied in the
+files "pngbar.png" and "pngbar.jpg (88x31) and "pngnow.png" (98x31).
+
+Libpng is OSI Certified Open Source Software. OSI Certified Open Source is a
+certification mark of the Open Source Initiative.
+
+Glenn Randers-Pehrson
+glennrp at users.sourceforge.net
+January 3, 2010
diff --git a/src/3rdparty/libpng/README b/src/3rdparty/libpng/README
new file mode 100644
index 0000000..68d7a8e
--- /dev/null
+++ b/src/3rdparty/libpng/README
@@ -0,0 +1,257 @@
+README for libpng version 1.4.0 - January 3, 2010 (shared library 14.0)
+See the note about version numbers near the top of png.h
+
+See INSTALL for instructions on how to install libpng.
+
+Libpng comes in several distribution formats. Get libpng-*.tar.gz,
+libpng-*.tar.xz or libpng-*.tar.bz2 if you want UNIX-style line endings
+in the text files, or lpng*.zip if you want DOS-style line endings.
+
+Version 0.89 was the first official release of libpng. Don't let the
+fact that it's the first release fool you. The libpng library has been in
+extensive use and testing since mid-1995. By late 1997 it had
+finally gotten to the stage where there hadn't been significant
+changes to the API in some time, and people have a bad feeling about
+libraries with versions < 1.0. Version 1.0.0 was released in
+March 1998.
+
+****
+Note that some of the changes to the png_info structure render this
+version of the library binary incompatible with libpng-0.89 or
+earlier versions if you are using a shared library. The type of the
+"filler" parameter for png_set_filler() has changed from png_byte to
+png_uint_32, which will affect shared-library applications that use
+this function.
+
+To avoid problems with changes to the internals of png_info_struct,
+new APIs have been made available in 0.95 to avoid direct application
+access to info_ptr. These functions are the png_set_<chunk> and
+png_get_<chunk> functions. These functions should be used when
+accessing/storing the info_struct data, rather than manipulating it
+directly, to avoid such problems in the future.
+
+It is important to note that the APIs do not make current programs
+that access the info struct directly incompatible with the new
+library. However, it is strongly suggested that new programs use
+the new APIs (as shown in example.c and pngtest.c), and older programs
+be converted to the new format, to facilitate upgrades in the future.
+****
+
+Additions since 0.90 include the ability to compile libpng as a
+Windows DLL, and new APIs for accessing data in the info struct.
+Experimental functions include the ability to set weighting and cost
+factors for row filter selection, direct reads of integers from buffers
+on big-endian processors that support misaligned data access, faster
+methods of doing alpha composition, and more accurate 16->8 bit color
+conversion.
+
+The additions since 0.89 include the ability to read from a PNG stream
+which has had some (or all) of the signature bytes read by the calling
+application. This also allows the reading of embedded PNG streams that
+do not have the PNG file signature. As well, it is now possible to set
+the library action on the detection of chunk CRC errors. It is possible
+to set different actions based on whether the CRC error occurred in a
+critical or an ancillary chunk.
+
+The changes made to the library, and bugs fixed are based on discussions
+on the PNG-implement mailing list and not on material submitted
+privately to Guy, Andreas, or Glenn. They will forward any good
+suggestions to the list.
+
+For a detailed description on using libpng, read libpng.txt. For
+examples of libpng in a program, see example.c and pngtest.c. For usage
+information and restrictions (what little they are) on libpng, see
+png.h. For a description on using zlib (the compression library used by
+libpng) and zlib's restrictions, see zlib.h
+
+I have included a general makefile, as well as several machine and
+compiler specific ones, but you may have to modify one for your own needs.
+
+You should use zlib 1.0.4 or later to run this, but it MAY work with
+versions as old as zlib 0.95. Even so, there are bugs in older zlib
+versions which can cause the output of invalid compression streams for
+some images. You will definitely need zlib 1.0.4 or later if you are
+taking advantage of the MS-DOS "far" structure allocation for the small
+and medium memory models. You should also note that zlib is a
+compression library that is useful for more things than just PNG files.
+You can use zlib as a drop-in replacement for fread() and fwrite() if
+you are so inclined.
+
+zlib should be available at the same place that libpng is, or at.
+ftp://ftp.info-zip.org/pub/infozip/zlib
+
+You may also want a copy of the PNG specification. It is available
+as an RFC, a W3C Recommendation, and an ISO/IEC Standard. You can find
+these at http://www.libpng.org/pub/png/documents/
+
+This code is currently being archived at libpng.sf.net in the
+[DOWNLOAD] area, and on CompuServe, Lib 20 (PNG SUPPORT)
+at GO GRAPHSUP. If you can't find it in any of those places,
+e-mail me, and I'll help you find it.
+
+If you have any code changes, requests, problems, etc., please e-mail
+them to me. Also, I'd appreciate any make files or project files,
+and any modifications you needed to make to get libpng to compile,
+along with a #define variable to tell what compiler/system you are on.
+If you needed to add transformations to libpng, or wish libpng would
+provide the image in a different way, drop me a note (and code, if
+possible), so I can consider supporting the transformation.
+Finally, if you get any warning messages when compiling libpng
+(note: not zlib), and they are easy to fix, I'd appreciate the
+fix. Please mention "libpng" somewhere in the subject line. Thanks.
+
+This release was created and will be supported by myself (of course
+based in a large way on Guy's and Andreas' earlier work), and the PNG
+development group.
+
+Send comments/corrections/commendations to png-mng-implement at
+lists.sourceforge.net (subscription required; visit
+https://lists.sourceforge.net/lists/listinfo/png-mng-implement
+to subscribe) or to glennrp at users.sourceforge.net
+
+You can't reach Guy, the original libpng author, at the addresses
+given in previous versions of this document. He and Andreas will
+read mail addressed to the png-implement list, however.
+
+Please do not send general questions about PNG. Send them to
+the (png-list at ccrc.wustl.edu, subscription required, write to
+majordomo at ccrc.wustl.edu with "subscribe png-list" in your message).
+On the other hand,
+please do not send libpng questions to that address, send them to me
+or to the png-implement list. I'll
+get them in the end anyway. If you have a question about something
+in the PNG specification that is related to using libpng, send it
+to me. Send me any questions that start with "I was using libpng,
+and ...". If in doubt, send questions to me. I'll bounce them
+to others, if necessary.
+
+Please do not send suggestions on how to change PNG. We have
+been discussing PNG for nine years now, and it is official and
+finished. If you have suggestions for libpng, however, I'll
+gladly listen. Even if your suggestion is not used immediately,
+it may be used later.
+
+Files in this distribution:
+
+ ANNOUNCE => Announcement of this version, with recent changes
+ CHANGES => Description of changes between libpng versions
+ KNOWNBUG => List of known bugs and deficiencies
+ LICENSE => License to use and redistribute libpng
+ README => This file
+ TODO => Things not implemented in the current library
+ Y2KINFO => Statement of Y2K compliance
+ example.c => Example code for using libpng functions
+ libpng.3 => manual page for libpng (includes libpng.txt)
+ libpng.txt => Description of libpng and its functions
+ libpngpf.3 => manual page for libpng's private functions
+ png.5 => manual page for the PNG format
+ png.c => Basic interface functions common to library
+ png.h => Library function and interface declarations
+ pngconf.h => System specific library configuration
+ pngerror.c => Error/warning message I/O functions
+ pngget.c => Functions for retrieving info from struct
+ pngmem.c => Memory handling functions
+ pngbar.png => PNG logo, 88x31
+ pngnow.png => PNG logo, 98x31
+ pngpread.c => Progressive reading functions
+ pngread.c => Read data/helper high-level functions
+ pngrio.c => Lowest-level data read I/O functions
+ pngrtran.c => Read data transformation functions
+ pngrutil.c => Read data utility functions
+ pngset.c => Functions for storing data into the info_struct
+ pngtest.c => Library test program
+ pngtest.png => Library test sample image
+ pngtrans.c => Common data transformation functions
+ pngwio.c => Lowest-level write I/O functions
+ pngwrite.c => High-level write functions
+ pngwtran.c => Write data transformations
+ pngwutil.c => Write utility functions
+ contrib => Contributions
+ gregbook => source code for PNG reading and writing, from
+ Greg Roelofs' "PNG: The Definitive Guide",
+ O'Reilly, 1999
+ msvctest => Builds and runs pngtest using a MSVC workspace
+ pngminus => Simple pnm2png and png2pnm programs
+ pngsuite => Test images
+ visupng => Contains a MSVC workspace for VisualPng
+ projects => Contains project files and workspaces for
+ building a DLL
+ c5builder => Contains a Borland workspace for building
+ libpng and zlib
+ visualc6 => Contains a Microsoft Visual C++ (MSVC)
+ workspace for building libpng and zlib
+ scripts => Directory containing scripts for building libpng:
+ descrip.mms => VMS makefile for MMS or MMK
+ makefile.std => Generic UNIX makefile (cc, creates static
+ libpng.a)
+ makefile.elf => Linux/ELF makefile symbol versioning,
+ gcc, creates libpng14.so.14.1.4.0)
+ makefile.linux => Linux/ELF makefile
+ (gcc, creates libpng14.so.14.1.4.0)
+ makefile.gcc => Generic makefile (gcc, creates static libpng.a)
+ makefile.knr => Archaic UNIX Makefile that converts files with
+ ansi2knr (Requires ansi2knr.c from
+ ftp://ftp.cs.wisc.edu/ghost)
+ makefile.aix => AIX makefile
+ makefile.cygwin => Cygwin/gcc makefile
+ makefile.darwin => Darwin makefile
+ makefile.dec => DEC Alpha UNIX makefile
+ makefile.freebsd => FreeBSD makefile
+ makefile.hpgcc => HPUX makefile using gcc
+ makefile.hpux => HPUX (10.20 and 11.00) makefile
+ makefile.hp64 => HPUX (10.20 and 11.00) makefile, 64 bit
+ makefile.ibmc => IBM C/C++ version 3.x for Win32 and OS/2 (static)
+ makefile.intel => Intel C/C++ version 4.0 and later
+ makefile.mingw => Mingw/gcc makefile
+ makefile.netbsd => NetBSD/cc makefile, makes libpng.so.
+ makefile.ne14bsd => NetBSD/cc makefile, makes
+ libpng14.so
+ makefile.openbsd => OpenBSD makefile
+ makefile.sgi => Silicon Graphics IRIX (cc, creates static lib)
+ makefile.sggcc => Silicon Graphics
+ (gcc, creates libpng14.so.14.1.4.0)
+ makefile.sunos => Sun makefile
+ makefile.solaris => Solaris 2.X makefile
+ (gcc, creates libpng14.so.14.1.4.0)
+ makefile.so9 => Solaris 9 makefile
+ (gcc, creates libpng14.so.14.1.4.0)
+ makefile.32sunu => Sun Ultra 32-bit makefile
+ makefile.64sunu => Sun Ultra 64-bit makefile
+ makefile.sco => For SCO OSr5 ELF and Unixware 7 with Native cc
+ makefile.mips => MIPS makefile
+ makefile.acorn => Acorn makefile
+ makefile.amiga => Amiga makefile
+ smakefile.ppc => AMIGA smakefile for SAS C V6.58/7.00 PPC
+ compiler (Requires SCOPTIONS, copied from
+ scripts/SCOPTIONS.ppc)
+ makefile.atari => Atari makefile
+ makefile.beos => BEOS makefile for X86
+ makefile.bor => Borland makefile (uses bcc)
+ makefile.bc32 => 32-bit Borland C++ (all modules compiled in C mode)
+ makefile.tc3 => Turbo C 3.0 makefile
+ makefile.dj2 => DJGPP 2 makefile
+ makefile.msc => Microsoft C makefile
+ makefile.vcwin32 => makefile for Microsoft Visual C++ 4.0 and
+ later (does not use assembler code)
+ makefile.os2 => OS/2 Makefile (gcc and emx, requires pngos2.def)
+ png32ce.def => module definition for makefile.cegccg
+ pngos2.def => OS/2 module definition file used by
+ makefile.os2
+ pngwin.def => module definition file used by
+ makefile.cygwin and makefile.mingw
+ makefile.watcom => Watcom 10a+ Makefile, 32-bit flat memory model
+ makevms.com => VMS build script
+ SCOPTIONS.ppc => Used with smakefile.ppc
+
+Good luck, and happy coding.
+
+-Glenn Randers-Pehrson (current maintainer, since 1998)
+ Internet: glennrp at users.sourceforge.net
+
+-Andreas Eric Dilger (former maintainer, 1996-1997)
+ Internet: adilger at enel.ucalgary.ca
+ Web: http://www-mddsp.enel.ucalgary.ca/People/adilger/
+
+-Guy Eric Schalnat (original author and former maintainer, 1995-1996)
+ (formerly of Group 42, Inc)
+ Internet: gschal at infinet.com
diff --git a/src/3rdparty/libpng/TODO b/src/3rdparty/libpng/TODO
new file mode 100644
index 0000000..7fe1ddf
--- /dev/null
+++ b/src/3rdparty/libpng/TODO
@@ -0,0 +1,31 @@
+/*
+TODO - list of things to do for libpng:
+
+Final bug fixes.
+Improve API by hiding the png_struct and png_info structs.
+Finish work on the no-floating-point version (including gamma compensation)
+Better C++ wrapper/full C++ implementation?
+Fix problem with C++ and EXTERN "C".
+cHRM transformation.
+Improve setjmp/longjmp usage or remove it in favor of returning error codes.
+Add "grayscale->palette" transformation and "palette->grayscale" detection.
+Improved dithering.
+Multi-lingual error and warning message support.
+Complete sRGB transformation (presently it simply uses gamma=0.45455).
+Man pages for function calls.
+Better documentation.
+Better filter selection
+ (counting huffman bits/precompression? filter inertia? filter costs?).
+Histogram creation.
+Text conversion between different code pages (Latin-1 -> Mac and DOS).
+Build gamma tables using fixed point (and do away with floating point entirely).
+Avoid building gamma tables whenever possible.
+Use greater precision when changing to linear gamma for compositing against
+ background and doing rgb-to-gray transformation.
+Investigate pre-incremented loop counters and other loop constructions.
+Add interpolated method of handling interlacing.
+Provide for conditional compilation of 16-bit support (except for the
+ initial stripping down to 8-bits when reading a 16-bit PNG datastream).
+Switch to the simpler zlib (zlib/libpng) license if legally possible.
+
+*/
diff --git a/src/3rdparty/libpng/aclocal.m4 b/src/3rdparty/libpng/aclocal.m4
new file mode 100644
index 0000000..27bc57c
--- /dev/null
+++ b/src/3rdparty/libpng/aclocal.m4
@@ -0,0 +1,8949 @@
+# generated automatically by aclocal 1.11 -*- Autoconf -*-
+
+# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
+# 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+m4_ifndef([AC_AUTOCONF_VERSION],
+ [m4_copy([m4_PACKAGE_VERSION], [AC_AUTOCONF_VERSION])])dnl
+m4_if(m4_defn([AC_AUTOCONF_VERSION]), [2.65],,
+[m4_warning([this file was generated for autoconf 2.65.
+You have another version of autoconf. It may work, but is not guaranteed to.
+If you have problems, you may need to regenerate the build system entirely.
+To do so, use the procedure documented by the package, typically `autoreconf'.])])
+
+# libtool.m4 - Configure libtool for the host system. -*-Autoconf-*-
+#
+# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005,
+# 2006, 2007, 2008 Free Software Foundation, Inc.
+# Written by Gordon Matzigkeit, 1996
+#
+# This file is free software; the Free Software Foundation gives
+# unlimited permission to copy and/or distribute it, with or without
+# modifications, as long as this notice is preserved.
+
+m4_define([_LT_COPYING], [dnl
+# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005,
+# 2006, 2007, 2008 Free Software Foundation, Inc.
+# Written by Gordon Matzigkeit, 1996
+#
+# This file is part of GNU Libtool.
+#
+# GNU Libtool is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# As a special exception to the GNU General Public License,
+# if you distribute this file as part of a program or library that
+# is built using GNU Libtool, you may include this file under the
+# same distribution terms that you use for the rest of that program.
+#
+# GNU Libtool is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GNU Libtool; see the file COPYING. If not, a copy
+# can be downloaded from http://www.gnu.org/licenses/gpl.html, or
+# obtained by writing to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+])
+
+# serial 56 LT_INIT
+
+
+# LT_PREREQ(VERSION)
+# ------------------
+# Complain and exit if this libtool version is less that VERSION.
+m4_defun([LT_PREREQ],
+[m4_if(m4_version_compare(m4_defn([LT_PACKAGE_VERSION]), [$1]), -1,
+ [m4_default([$3],
+ [m4_fatal([Libtool version $1 or higher is required],
+ 63)])],
+ [$2])])
+
+
+# _LT_CHECK_BUILDDIR
+# ------------------
+# Complain if the absolute build directory name contains unusual characters
+m4_defun([_LT_CHECK_BUILDDIR],
+[case `pwd` in
+ *\ * | *\ *)
+ AC_MSG_WARN([Libtool does not cope well with whitespace in `pwd`]) ;;
+esac
+])
+
+
+# LT_INIT([OPTIONS])
+# ------------------
+AC_DEFUN([LT_INIT],
+[AC_PREREQ([2.58])dnl We use AC_INCLUDES_DEFAULT
+AC_BEFORE([$0], [LT_LANG])dnl
+AC_BEFORE([$0], [LT_OUTPUT])dnl
+AC_BEFORE([$0], [LTDL_INIT])dnl
+m4_require([_LT_CHECK_BUILDDIR])dnl
+
+dnl Autoconf doesn't catch unexpanded LT_ macros by default:
+m4_pattern_forbid([^_?LT_[A-Z_]+$])dnl
+m4_pattern_allow([^(_LT_EOF|LT_DLGLOBAL|LT_DLLAZY_OR_NOW|LT_MULTI_MODULE)$])dnl
+dnl aclocal doesn't pull ltoptions.m4, ltsugar.m4, or ltversion.m4
+dnl unless we require an AC_DEFUNed macro:
+AC_REQUIRE([LTOPTIONS_VERSION])dnl
+AC_REQUIRE([LTSUGAR_VERSION])dnl
+AC_REQUIRE([LTVERSION_VERSION])dnl
+AC_REQUIRE([LTOBSOLETE_VERSION])dnl
+m4_require([_LT_PROG_LTMAIN])dnl
+
+dnl Parse OPTIONS
+_LT_SET_OPTIONS([$0], [$1])
+
+# This can be used to rebuild libtool when needed
+LIBTOOL_DEPS="$ltmain"
+
+# Always use our own libtool.
+LIBTOOL='$(SHELL) $(top_builddir)/libtool'
+AC_SUBST(LIBTOOL)dnl
+
+_LT_SETUP
+
+# Only expand once:
+m4_define([LT_INIT])
+])# LT_INIT
+
+# Old names:
+AU_ALIAS([AC_PROG_LIBTOOL], [LT_INIT])
+AU_ALIAS([AM_PROG_LIBTOOL], [LT_INIT])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_PROG_LIBTOOL], [])
+dnl AC_DEFUN([AM_PROG_LIBTOOL], [])
+
+
+# _LT_CC_BASENAME(CC)
+# -------------------
+# Calculate cc_basename. Skip known compiler wrappers and cross-prefix.
+m4_defun([_LT_CC_BASENAME],
+[for cc_temp in $1""; do
+ case $cc_temp in
+ compile | *[[\\/]]compile | ccache | *[[\\/]]ccache ) ;;
+ distcc | *[[\\/]]distcc | purify | *[[\\/]]purify ) ;;
+ \-*) ;;
+ *) break;;
+ esac
+done
+cc_basename=`$ECHO "X$cc_temp" | $Xsed -e 's%.*/%%' -e "s%^$host_alias-%%"`
+])
+
+
+# _LT_FILEUTILS_DEFAULTS
+# ----------------------
+# It is okay to use these file commands and assume they have been set
+# sensibly after `m4_require([_LT_FILEUTILS_DEFAULTS])'.
+m4_defun([_LT_FILEUTILS_DEFAULTS],
+[: ${CP="cp -f"}
+: ${MV="mv -f"}
+: ${RM="rm -f"}
+])# _LT_FILEUTILS_DEFAULTS
+
+
+# _LT_SETUP
+# ---------
+m4_defun([_LT_SETUP],
+[AC_REQUIRE([AC_CANONICAL_HOST])dnl
+AC_REQUIRE([AC_CANONICAL_BUILD])dnl
+_LT_DECL([], [host_alias], [0], [The host system])dnl
+_LT_DECL([], [host], [0])dnl
+_LT_DECL([], [host_os], [0])dnl
+dnl
+_LT_DECL([], [build_alias], [0], [The build system])dnl
+_LT_DECL([], [build], [0])dnl
+_LT_DECL([], [build_os], [0])dnl
+dnl
+AC_REQUIRE([AC_PROG_CC])dnl
+AC_REQUIRE([LT_PATH_LD])dnl
+AC_REQUIRE([LT_PATH_NM])dnl
+dnl
+AC_REQUIRE([AC_PROG_LN_S])dnl
+test -z "$LN_S" && LN_S="ln -s"
+_LT_DECL([], [LN_S], [1], [Whether we need soft or hard links])dnl
+dnl
+AC_REQUIRE([LT_CMD_MAX_LEN])dnl
+_LT_DECL([objext], [ac_objext], [0], [Object file suffix (normally "o")])dnl
+_LT_DECL([], [exeext], [0], [Executable file suffix (normally "")])dnl
+dnl
+m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+m4_require([_LT_CHECK_SHELL_FEATURES])dnl
+m4_require([_LT_CMD_RELOAD])dnl
+m4_require([_LT_CHECK_MAGIC_METHOD])dnl
+m4_require([_LT_CMD_OLD_ARCHIVE])dnl
+m4_require([_LT_CMD_GLOBAL_SYMBOLS])dnl
+
+_LT_CONFIG_LIBTOOL_INIT([
+# See if we are running on zsh, and set the options which allow our
+# commands through without removal of \ escapes INIT.
+if test -n "\${ZSH_VERSION+set}" ; then
+ setopt NO_GLOB_SUBST
+fi
+])
+if test -n "${ZSH_VERSION+set}" ; then
+ setopt NO_GLOB_SUBST
+fi
+
+_LT_CHECK_OBJDIR
+
+m4_require([_LT_TAG_COMPILER])dnl
+_LT_PROG_ECHO_BACKSLASH
+
+case $host_os in
+aix3*)
+ # AIX sometimes has problems with the GCC collect2 program. For some
+ # reason, if we set the COLLECT_NAMES environment variable, the problems
+ # vanish in a puff of smoke.
+ if test "X${COLLECT_NAMES+set}" != Xset; then
+ COLLECT_NAMES=
+ export COLLECT_NAMES
+ fi
+ ;;
+esac
+
+# Sed substitution that helps us do robust quoting. It backslashifies
+# metacharacters that are still active within double-quoted strings.
+sed_quote_subst='s/\([["`$\\]]\)/\\\1/g'
+
+# Same as above, but do not quote variable references.
+double_quote_subst='s/\([["`\\]]\)/\\\1/g'
+
+# Sed substitution to delay expansion of an escaped shell variable in a
+# double_quote_subst'ed string.
+delay_variable_subst='s/\\\\\\\\\\\$/\\\\\\$/g'
+
+# Sed substitution to delay expansion of an escaped single quote.
+delay_single_quote_subst='s/'\''/'\'\\\\\\\'\''/g'
+
+# Sed substitution to avoid accidental globbing in evaled expressions
+no_glob_subst='s/\*/\\\*/g'
+
+# Global variables:
+ofile=libtool
+can_build_shared=yes
+
+# All known linkers require a `.a' archive for static linking (except MSVC,
+# which needs '.lib').
+libext=a
+
+with_gnu_ld="$lt_cv_prog_gnu_ld"
+
+old_CC="$CC"
+old_CFLAGS="$CFLAGS"
+
+# Set sane defaults for various variables
+test -z "$CC" && CC=cc
+test -z "$LTCC" && LTCC=$CC
+test -z "$LTCFLAGS" && LTCFLAGS=$CFLAGS
+test -z "$LD" && LD=ld
+test -z "$ac_objext" && ac_objext=o
+
+_LT_CC_BASENAME([$compiler])
+
+# Only perform the check for file, if the check method requires it
+test -z "$MAGIC_CMD" && MAGIC_CMD=file
+case $deplibs_check_method in
+file_magic*)
+ if test "$file_magic_cmd" = '$MAGIC_CMD'; then
+ _LT_PATH_MAGIC
+ fi
+ ;;
+esac
+
+# Use C for the default configuration in the libtool script
+LT_SUPPORTED_TAG([CC])
+_LT_LANG_C_CONFIG
+_LT_LANG_DEFAULT_CONFIG
+_LT_CONFIG_COMMANDS
+])# _LT_SETUP
+
+
+# _LT_PROG_LTMAIN
+# ---------------
+# Note that this code is called both from `configure', and `config.status'
+# now that we use AC_CONFIG_COMMANDS to generate libtool. Notably,
+# `config.status' has no value for ac_aux_dir unless we are using Automake,
+# so we pass a copy along to make sure it has a sensible value anyway.
+m4_defun([_LT_PROG_LTMAIN],
+[m4_ifdef([AC_REQUIRE_AUX_FILE], [AC_REQUIRE_AUX_FILE([ltmain.sh])])dnl
+_LT_CONFIG_LIBTOOL_INIT([ac_aux_dir='$ac_aux_dir'])
+ltmain="$ac_aux_dir/ltmain.sh"
+])# _LT_PROG_LTMAIN
+
+
+
+# So that we can recreate a full libtool script including additional
+# tags, we accumulate the chunks of code to send to AC_CONFIG_COMMANDS
+# in macros and then make a single call at the end using the `libtool'
+# label.
+
+
+# _LT_CONFIG_LIBTOOL_INIT([INIT-COMMANDS])
+# ----------------------------------------
+# Register INIT-COMMANDS to be passed to AC_CONFIG_COMMANDS later.
+m4_define([_LT_CONFIG_LIBTOOL_INIT],
+[m4_ifval([$1],
+ [m4_append([_LT_OUTPUT_LIBTOOL_INIT],
+ [$1
+])])])
+
+# Initialize.
+m4_define([_LT_OUTPUT_LIBTOOL_INIT])
+
+
+# _LT_CONFIG_LIBTOOL([COMMANDS])
+# ------------------------------
+# Register COMMANDS to be passed to AC_CONFIG_COMMANDS later.
+m4_define([_LT_CONFIG_LIBTOOL],
+[m4_ifval([$1],
+ [m4_append([_LT_OUTPUT_LIBTOOL_COMMANDS],
+ [$1
+])])])
+
+# Initialize.
+m4_define([_LT_OUTPUT_LIBTOOL_COMMANDS])
+
+
+# _LT_CONFIG_SAVE_COMMANDS([COMMANDS], [INIT_COMMANDS])
+# -----------------------------------------------------
+m4_defun([_LT_CONFIG_SAVE_COMMANDS],
+[_LT_CONFIG_LIBTOOL([$1])
+_LT_CONFIG_LIBTOOL_INIT([$2])
+])
+
+
+# _LT_FORMAT_COMMENT([COMMENT])
+# -----------------------------
+# Add leading comment marks to the start of each line, and a trailing
+# full-stop to the whole comment if one is not present already.
+m4_define([_LT_FORMAT_COMMENT],
+[m4_ifval([$1], [
+m4_bpatsubst([m4_bpatsubst([$1], [^ *], [# ])],
+ [['`$\]], [\\\&])]m4_bmatch([$1], [[!?.]$], [], [.])
+)])
+
+
+
+
+
+# _LT_DECL([CONFIGNAME], VARNAME, VALUE, [DESCRIPTION], [IS-TAGGED?])
+# -------------------------------------------------------------------
+# CONFIGNAME is the name given to the value in the libtool script.
+# VARNAME is the (base) name used in the configure script.
+# VALUE may be 0, 1 or 2 for a computed quote escaped value based on
+# VARNAME. Any other value will be used directly.
+m4_define([_LT_DECL],
+[lt_if_append_uniq([lt_decl_varnames], [$2], [, ],
+ [lt_dict_add_subkey([lt_decl_dict], [$2], [libtool_name],
+ [m4_ifval([$1], [$1], [$2])])
+ lt_dict_add_subkey([lt_decl_dict], [$2], [value], [$3])
+ m4_ifval([$4],
+ [lt_dict_add_subkey([lt_decl_dict], [$2], [description], [$4])])
+ lt_dict_add_subkey([lt_decl_dict], [$2],
+ [tagged?], [m4_ifval([$5], [yes], [no])])])
+])
+
+
+# _LT_TAGDECL([CONFIGNAME], VARNAME, VALUE, [DESCRIPTION])
+# --------------------------------------------------------
+m4_define([_LT_TAGDECL], [_LT_DECL([$1], [$2], [$3], [$4], [yes])])
+
+
+# lt_decl_tag_varnames([SEPARATOR], [VARNAME1...])
+# ------------------------------------------------
+m4_define([lt_decl_tag_varnames],
+[_lt_decl_filter([tagged?], [yes], $@)])
+
+
+# _lt_decl_filter(SUBKEY, VALUE, [SEPARATOR], [VARNAME1..])
+# ---------------------------------------------------------
+m4_define([_lt_decl_filter],
+[m4_case([$#],
+ [0], [m4_fatal([$0: too few arguments: $#])],
+ [1], [m4_fatal([$0: too few arguments: $#: $1])],
+ [2], [lt_dict_filter([lt_decl_dict], [$1], [$2], [], lt_decl_varnames)],
+ [3], [lt_dict_filter([lt_decl_dict], [$1], [$2], [$3], lt_decl_varnames)],
+ [lt_dict_filter([lt_decl_dict], $@)])[]dnl
+])
+
+
+# lt_decl_quote_varnames([SEPARATOR], [VARNAME1...])
+# --------------------------------------------------
+m4_define([lt_decl_quote_varnames],
+[_lt_decl_filter([value], [1], $@)])
+
+
+# lt_decl_dquote_varnames([SEPARATOR], [VARNAME1...])
+# ---------------------------------------------------
+m4_define([lt_decl_dquote_varnames],
+[_lt_decl_filter([value], [2], $@)])
+
+
+# lt_decl_varnames_tagged([SEPARATOR], [VARNAME1...])
+# ---------------------------------------------------
+m4_define([lt_decl_varnames_tagged],
+[m4_assert([$# <= 2])dnl
+_$0(m4_quote(m4_default([$1], [[, ]])),
+ m4_ifval([$2], [[$2]], [m4_dquote(lt_decl_tag_varnames)]),
+ m4_split(m4_normalize(m4_quote(_LT_TAGS)), [ ]))])
+m4_define([_lt_decl_varnames_tagged],
+[m4_ifval([$3], [lt_combine([$1], [$2], [_], $3)])])
+
+
+# lt_decl_all_varnames([SEPARATOR], [VARNAME1...])
+# ------------------------------------------------
+m4_define([lt_decl_all_varnames],
+[_$0(m4_quote(m4_default([$1], [[, ]])),
+ m4_if([$2], [],
+ m4_quote(lt_decl_varnames),
+ m4_quote(m4_shift($@))))[]dnl
+])
+m4_define([_lt_decl_all_varnames],
+[lt_join($@, lt_decl_varnames_tagged([$1],
+ lt_decl_tag_varnames([[, ]], m4_shift($@))))dnl
+])
+
+
+# _LT_CONFIG_STATUS_DECLARE([VARNAME])
+# ------------------------------------
+# Quote a variable value, and forward it to `config.status' so that its
+# declaration there will have the same value as in `configure'. VARNAME
+# must have a single quote delimited value for this to work.
+m4_define([_LT_CONFIG_STATUS_DECLARE],
+[$1='`$ECHO "X$][$1" | $Xsed -e "$delay_single_quote_subst"`'])
+
+
+# _LT_CONFIG_STATUS_DECLARATIONS
+# ------------------------------
+# We delimit libtool config variables with single quotes, so when
+# we write them to config.status, we have to be sure to quote all
+# embedded single quotes properly. In configure, this macro expands
+# each variable declared with _LT_DECL (and _LT_TAGDECL) into:
+#
+# <var>='`$ECHO "X$<var>" | $Xsed -e "$delay_single_quote_subst"`'
+m4_defun([_LT_CONFIG_STATUS_DECLARATIONS],
+[m4_foreach([_lt_var], m4_quote(lt_decl_all_varnames),
+ [m4_n([_LT_CONFIG_STATUS_DECLARE(_lt_var)])])])
+
+
+# _LT_LIBTOOL_TAGS
+# ----------------
+# Output comment and list of tags supported by the script
+m4_defun([_LT_LIBTOOL_TAGS],
+[_LT_FORMAT_COMMENT([The names of the tagged configurations supported by this script])dnl
+available_tags="_LT_TAGS"dnl
+])
+
+
+# _LT_LIBTOOL_DECLARE(VARNAME, [TAG])
+# -----------------------------------
+# Extract the dictionary values for VARNAME (optionally with TAG) and
+# expand to a commented shell variable setting:
+#
+# # Some comment about what VAR is for.
+# visible_name=$lt_internal_name
+m4_define([_LT_LIBTOOL_DECLARE],
+[_LT_FORMAT_COMMENT(m4_quote(lt_dict_fetch([lt_decl_dict], [$1],
+ [description])))[]dnl
+m4_pushdef([_libtool_name],
+ m4_quote(lt_dict_fetch([lt_decl_dict], [$1], [libtool_name])))[]dnl
+m4_case(m4_quote(lt_dict_fetch([lt_decl_dict], [$1], [value])),
+ [0], [_libtool_name=[$]$1],
+ [1], [_libtool_name=$lt_[]$1],
+ [2], [_libtool_name=$lt_[]$1],
+ [_libtool_name=lt_dict_fetch([lt_decl_dict], [$1], [value])])[]dnl
+m4_ifval([$2], [_$2])[]m4_popdef([_libtool_name])[]dnl
+])
+
+
+# _LT_LIBTOOL_CONFIG_VARS
+# -----------------------
+# Produce commented declarations of non-tagged libtool config variables
+# suitable for insertion in the LIBTOOL CONFIG section of the `libtool'
+# script. Tagged libtool config variables (even for the LIBTOOL CONFIG
+# section) are produced by _LT_LIBTOOL_TAG_VARS.
+m4_defun([_LT_LIBTOOL_CONFIG_VARS],
+[m4_foreach([_lt_var],
+ m4_quote(_lt_decl_filter([tagged?], [no], [], lt_decl_varnames)),
+ [m4_n([_LT_LIBTOOL_DECLARE(_lt_var)])])])
+
+
+# _LT_LIBTOOL_TAG_VARS(TAG)
+# -------------------------
+m4_define([_LT_LIBTOOL_TAG_VARS],
+[m4_foreach([_lt_var], m4_quote(lt_decl_tag_varnames),
+ [m4_n([_LT_LIBTOOL_DECLARE(_lt_var, [$1])])])])
+
+
+# _LT_TAGVAR(VARNAME, [TAGNAME])
+# ------------------------------
+m4_define([_LT_TAGVAR], [m4_ifval([$2], [$1_$2], [$1])])
+
+
+# _LT_CONFIG_COMMANDS
+# -------------------
+# Send accumulated output to $CONFIG_STATUS. Thanks to the lists of
+# variables for single and double quote escaping we saved from calls
+# to _LT_DECL, we can put quote escaped variables declarations
+# into `config.status', and then the shell code to quote escape them in
+# for loops in `config.status'. Finally, any additional code accumulated
+# from calls to _LT_CONFIG_LIBTOOL_INIT is expanded.
+m4_defun([_LT_CONFIG_COMMANDS],
+[AC_PROVIDE_IFELSE([LT_OUTPUT],
+ dnl If the libtool generation code has been placed in $CONFIG_LT,
+ dnl instead of duplicating it all over again into config.status,
+ dnl then we will have config.status run $CONFIG_LT later, so it
+ dnl needs to know what name is stored there:
+ [AC_CONFIG_COMMANDS([libtool],
+ [$SHELL $CONFIG_LT || AS_EXIT(1)], [CONFIG_LT='$CONFIG_LT'])],
+ dnl If the libtool generation code is destined for config.status,
+ dnl expand the accumulated commands and init code now:
+ [AC_CONFIG_COMMANDS([libtool],
+ [_LT_OUTPUT_LIBTOOL_COMMANDS], [_LT_OUTPUT_LIBTOOL_COMMANDS_INIT])])
+])#_LT_CONFIG_COMMANDS
+
+
+# Initialize.
+m4_define([_LT_OUTPUT_LIBTOOL_COMMANDS_INIT],
+[
+
+# The HP-UX ksh and POSIX shell print the target directory to stdout
+# if CDPATH is set.
+(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
+
+sed_quote_subst='$sed_quote_subst'
+double_quote_subst='$double_quote_subst'
+delay_variable_subst='$delay_variable_subst'
+_LT_CONFIG_STATUS_DECLARATIONS
+LTCC='$LTCC'
+LTCFLAGS='$LTCFLAGS'
+compiler='$compiler_DEFAULT'
+
+# Quote evaled strings.
+for var in lt_decl_all_varnames([[ \
+]], lt_decl_quote_varnames); do
+ case \`eval \\\\\$ECHO "X\\\\\$\$var"\` in
+ *[[\\\\\\\`\\"\\\$]]*)
+ eval "lt_\$var=\\\\\\"\\\`\\\$ECHO \\"X\\\$\$var\\" | \\\$Xsed -e \\"\\\$sed_quote_subst\\"\\\`\\\\\\""
+ ;;
+ *)
+ eval "lt_\$var=\\\\\\"\\\$\$var\\\\\\""
+ ;;
+ esac
+done
+
+# Double-quote double-evaled strings.
+for var in lt_decl_all_varnames([[ \
+]], lt_decl_dquote_varnames); do
+ case \`eval \\\\\$ECHO "X\\\\\$\$var"\` in
+ *[[\\\\\\\`\\"\\\$]]*)
+ eval "lt_\$var=\\\\\\"\\\`\\\$ECHO \\"X\\\$\$var\\" | \\\$Xsed -e \\"\\\$double_quote_subst\\" -e \\"\\\$sed_quote_subst\\" -e \\"\\\$delay_variable_subst\\"\\\`\\\\\\""
+ ;;
+ *)
+ eval "lt_\$var=\\\\\\"\\\$\$var\\\\\\""
+ ;;
+ esac
+done
+
+# Fix-up fallback echo if it was mangled by the above quoting rules.
+case \$lt_ECHO in
+*'\\\[$]0 --fallback-echo"')dnl "
+ lt_ECHO=\`\$ECHO "X\$lt_ECHO" | \$Xsed -e 's/\\\\\\\\\\\\\\\[$]0 --fallback-echo"\[$]/\[$]0 --fallback-echo"/'\`
+ ;;
+esac
+
+_LT_OUTPUT_LIBTOOL_INIT
+])
+
+
+# LT_OUTPUT
+# ---------
+# This macro allows early generation of the libtool script (before
+# AC_OUTPUT is called), incase it is used in configure for compilation
+# tests.
+AC_DEFUN([LT_OUTPUT],
+[: ${CONFIG_LT=./config.lt}
+AC_MSG_NOTICE([creating $CONFIG_LT])
+cat >"$CONFIG_LT" <<_LTEOF
+#! $SHELL
+# Generated by $as_me.
+# Run this file to recreate a libtool stub with the current configuration.
+
+lt_cl_silent=false
+SHELL=\${CONFIG_SHELL-$SHELL}
+_LTEOF
+
+cat >>"$CONFIG_LT" <<\_LTEOF
+AS_SHELL_SANITIZE
+_AS_PREPARE
+
+exec AS_MESSAGE_FD>&1
+exec AS_MESSAGE_LOG_FD>>config.log
+{
+ echo
+ AS_BOX([Running $as_me.])
+} >&AS_MESSAGE_LOG_FD
+
+lt_cl_help="\
+\`$as_me' creates a local libtool stub from the current configuration,
+for use in further configure time tests before the real libtool is
+generated.
+
+Usage: $[0] [[OPTIONS]]
+
+ -h, --help print this help, then exit
+ -V, --version print version number, then exit
+ -q, --quiet do not print progress messages
+ -d, --debug don't remove temporary files
+
+Report bugs to <bug-libtool@gnu.org>."
+
+lt_cl_version="\
+m4_ifset([AC_PACKAGE_NAME], [AC_PACKAGE_NAME ])config.lt[]dnl
+m4_ifset([AC_PACKAGE_VERSION], [ AC_PACKAGE_VERSION])
+configured by $[0], generated by m4_PACKAGE_STRING.
+
+Copyright (C) 2008 Free Software Foundation, Inc.
+This config.lt script is free software; the Free Software Foundation
+gives unlimited permision to copy, distribute and modify it."
+
+while test $[#] != 0
+do
+ case $[1] in
+ --version | --v* | -V )
+ echo "$lt_cl_version"; exit 0 ;;
+ --help | --h* | -h )
+ echo "$lt_cl_help"; exit 0 ;;
+ --debug | --d* | -d )
+ debug=: ;;
+ --quiet | --q* | --silent | --s* | -q )
+ lt_cl_silent=: ;;
+
+ -*) AC_MSG_ERROR([unrecognized option: $[1]
+Try \`$[0] --help' for more information.]) ;;
+
+ *) AC_MSG_ERROR([unrecognized argument: $[1]
+Try \`$[0] --help' for more information.]) ;;
+ esac
+ shift
+done
+
+if $lt_cl_silent; then
+ exec AS_MESSAGE_FD>/dev/null
+fi
+_LTEOF
+
+cat >>"$CONFIG_LT" <<_LTEOF
+_LT_OUTPUT_LIBTOOL_COMMANDS_INIT
+_LTEOF
+
+cat >>"$CONFIG_LT" <<\_LTEOF
+AC_MSG_NOTICE([creating $ofile])
+_LT_OUTPUT_LIBTOOL_COMMANDS
+AS_EXIT(0)
+_LTEOF
+chmod +x "$CONFIG_LT"
+
+# configure is writing to config.log, but config.lt does its own redirection,
+# appending to config.log, which fails on DOS, as config.log is still kept
+# open by configure. Here we exec the FD to /dev/null, effectively closing
+# config.log, so it can be properly (re)opened and appended to by config.lt.
+if test "$no_create" != yes; then
+ lt_cl_success=:
+ test "$silent" = yes &&
+ lt_config_lt_args="$lt_config_lt_args --quiet"
+ exec AS_MESSAGE_LOG_FD>/dev/null
+ $SHELL "$CONFIG_LT" $lt_config_lt_args || lt_cl_success=false
+ exec AS_MESSAGE_LOG_FD>>config.log
+ $lt_cl_success || AS_EXIT(1)
+fi
+])# LT_OUTPUT
+
+
+# _LT_CONFIG(TAG)
+# ---------------
+# If TAG is the built-in tag, create an initial libtool script with a
+# default configuration from the untagged config vars. Otherwise add code
+# to config.status for appending the configuration named by TAG from the
+# matching tagged config vars.
+m4_defun([_LT_CONFIG],
+[m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+_LT_CONFIG_SAVE_COMMANDS([
+ m4_define([_LT_TAG], m4_if([$1], [], [C], [$1]))dnl
+ m4_if(_LT_TAG, [C], [
+ # See if we are running on zsh, and set the options which allow our
+ # commands through without removal of \ escapes.
+ if test -n "${ZSH_VERSION+set}" ; then
+ setopt NO_GLOB_SUBST
+ fi
+
+ cfgfile="${ofile}T"
+ trap "$RM \"$cfgfile\"; exit 1" 1 2 15
+ $RM "$cfgfile"
+
+ cat <<_LT_EOF >> "$cfgfile"
+#! $SHELL
+
+# `$ECHO "$ofile" | sed 's%^.*/%%'` - Provide generalized library-building support services.
+# Generated automatically by $as_me ($PACKAGE$TIMESTAMP) $VERSION
+# Libtool was configured on host `(hostname || uname -n) 2>/dev/null | sed 1q`:
+# NOTE: Changes made to this file will be lost: look at ltmain.sh.
+#
+_LT_COPYING
+_LT_LIBTOOL_TAGS
+
+# ### BEGIN LIBTOOL CONFIG
+_LT_LIBTOOL_CONFIG_VARS
+_LT_LIBTOOL_TAG_VARS
+# ### END LIBTOOL CONFIG
+
+_LT_EOF
+
+ case $host_os in
+ aix3*)
+ cat <<\_LT_EOF >> "$cfgfile"
+# AIX sometimes has problems with the GCC collect2 program. For some
+# reason, if we set the COLLECT_NAMES environment variable, the problems
+# vanish in a puff of smoke.
+if test "X${COLLECT_NAMES+set}" != Xset; then
+ COLLECT_NAMES=
+ export COLLECT_NAMES
+fi
+_LT_EOF
+ ;;
+ esac
+
+ _LT_PROG_LTMAIN
+
+ # We use sed instead of cat because bash on DJGPP gets confused if
+ # if finds mixed CR/LF and LF-only lines. Since sed operates in
+ # text mode, it properly converts lines to CR/LF. This bash problem
+ # is reportedly fixed, but why not run on old versions too?
+ sed '/^# Generated shell functions inserted here/q' "$ltmain" >> "$cfgfile" \
+ || (rm -f "$cfgfile"; exit 1)
+
+ _LT_PROG_XSI_SHELLFNS
+
+ sed -n '/^# Generated shell functions inserted here/,$p' "$ltmain" >> "$cfgfile" \
+ || (rm -f "$cfgfile"; exit 1)
+
+ mv -f "$cfgfile" "$ofile" ||
+ (rm -f "$ofile" && cp "$cfgfile" "$ofile" && rm -f "$cfgfile")
+ chmod +x "$ofile"
+],
+[cat <<_LT_EOF >> "$ofile"
+
+dnl Unfortunately we have to use $1 here, since _LT_TAG is not expanded
+dnl in a comment (ie after a #).
+# ### BEGIN LIBTOOL TAG CONFIG: $1
+_LT_LIBTOOL_TAG_VARS(_LT_TAG)
+# ### END LIBTOOL TAG CONFIG: $1
+_LT_EOF
+])dnl /m4_if
+],
+[m4_if([$1], [], [
+ PACKAGE='$PACKAGE'
+ VERSION='$VERSION'
+ TIMESTAMP='$TIMESTAMP'
+ RM='$RM'
+ ofile='$ofile'], [])
+])dnl /_LT_CONFIG_SAVE_COMMANDS
+])# _LT_CONFIG
+
+
+# LT_SUPPORTED_TAG(TAG)
+# ---------------------
+# Trace this macro to discover what tags are supported by the libtool
+# --tag option, using:
+# autoconf --trace 'LT_SUPPORTED_TAG:$1'
+AC_DEFUN([LT_SUPPORTED_TAG], [])
+
+
+# C support is built-in for now
+m4_define([_LT_LANG_C_enabled], [])
+m4_define([_LT_TAGS], [])
+
+
+# LT_LANG(LANG)
+# -------------
+# Enable libtool support for the given language if not already enabled.
+AC_DEFUN([LT_LANG],
+[AC_BEFORE([$0], [LT_OUTPUT])dnl
+m4_case([$1],
+ [C], [_LT_LANG(C)],
+ [C++], [_LT_LANG(CXX)],
+ [Java], [_LT_LANG(GCJ)],
+ [Fortran 77], [_LT_LANG(F77)],
+ [Fortran], [_LT_LANG(FC)],
+ [Windows Resource], [_LT_LANG(RC)],
+ [m4_ifdef([_LT_LANG_]$1[_CONFIG],
+ [_LT_LANG($1)],
+ [m4_fatal([$0: unsupported language: "$1"])])])dnl
+])# LT_LANG
+
+
+# _LT_LANG(LANGNAME)
+# ------------------
+m4_defun([_LT_LANG],
+[m4_ifdef([_LT_LANG_]$1[_enabled], [],
+ [LT_SUPPORTED_TAG([$1])dnl
+ m4_append([_LT_TAGS], [$1 ])dnl
+ m4_define([_LT_LANG_]$1[_enabled], [])dnl
+ _LT_LANG_$1_CONFIG($1)])dnl
+])# _LT_LANG
+
+
+# _LT_LANG_DEFAULT_CONFIG
+# -----------------------
+m4_defun([_LT_LANG_DEFAULT_CONFIG],
+[AC_PROVIDE_IFELSE([AC_PROG_CXX],
+ [LT_LANG(CXX)],
+ [m4_define([AC_PROG_CXX], defn([AC_PROG_CXX])[LT_LANG(CXX)])])
+
+AC_PROVIDE_IFELSE([AC_PROG_F77],
+ [LT_LANG(F77)],
+ [m4_define([AC_PROG_F77], defn([AC_PROG_F77])[LT_LANG(F77)])])
+
+AC_PROVIDE_IFELSE([AC_PROG_FC],
+ [LT_LANG(FC)],
+ [m4_define([AC_PROG_FC], defn([AC_PROG_FC])[LT_LANG(FC)])])
+
+dnl The call to [A][M_PROG_GCJ] is quoted like that to stop aclocal
+dnl pulling things in needlessly.
+AC_PROVIDE_IFELSE([AC_PROG_GCJ],
+ [LT_LANG(GCJ)],
+ [AC_PROVIDE_IFELSE([A][M_PROG_GCJ],
+ [LT_LANG(GCJ)],
+ [AC_PROVIDE_IFELSE([LT_PROG_GCJ],
+ [LT_LANG(GCJ)],
+ [m4_ifdef([AC_PROG_GCJ],
+ [m4_define([AC_PROG_GCJ], defn([AC_PROG_GCJ])[LT_LANG(GCJ)])])
+ m4_ifdef([A][M_PROG_GCJ],
+ [m4_define([A][M_PROG_GCJ], defn([A][M_PROG_GCJ])[LT_LANG(GCJ)])])
+ m4_ifdef([LT_PROG_GCJ],
+ [m4_define([LT_PROG_GCJ], defn([LT_PROG_GCJ])[LT_LANG(GCJ)])])])])])
+
+AC_PROVIDE_IFELSE([LT_PROG_RC],
+ [LT_LANG(RC)],
+ [m4_define([LT_PROG_RC], defn([LT_PROG_RC])[LT_LANG(RC)])])
+])# _LT_LANG_DEFAULT_CONFIG
+
+# Obsolete macros:
+AU_DEFUN([AC_LIBTOOL_CXX], [LT_LANG(C++)])
+AU_DEFUN([AC_LIBTOOL_F77], [LT_LANG(Fortran 77)])
+AU_DEFUN([AC_LIBTOOL_FC], [LT_LANG(Fortran)])
+AU_DEFUN([AC_LIBTOOL_GCJ], [LT_LANG(Java)])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LIBTOOL_CXX], [])
+dnl AC_DEFUN([AC_LIBTOOL_F77], [])
+dnl AC_DEFUN([AC_LIBTOOL_FC], [])
+dnl AC_DEFUN([AC_LIBTOOL_GCJ], [])
+
+
+# _LT_TAG_COMPILER
+# ----------------
+m4_defun([_LT_TAG_COMPILER],
+[AC_REQUIRE([AC_PROG_CC])dnl
+
+_LT_DECL([LTCC], [CC], [1], [A C compiler])dnl
+_LT_DECL([LTCFLAGS], [CFLAGS], [1], [LTCC compiler flags])dnl
+_LT_TAGDECL([CC], [compiler], [1], [A language specific compiler])dnl
+_LT_TAGDECL([with_gcc], [GCC], [0], [Is the compiler the GNU compiler?])dnl
+
+# If no C compiler was specified, use CC.
+LTCC=${LTCC-"$CC"}
+
+# If no C compiler flags were specified, use CFLAGS.
+LTCFLAGS=${LTCFLAGS-"$CFLAGS"}
+
+# Allow CC to be a program name with arguments.
+compiler=$CC
+])# _LT_TAG_COMPILER
+
+
+# _LT_COMPILER_BOILERPLATE
+# ------------------------
+# Check for compiler boilerplate output or warnings with
+# the simple compiler test code.
+m4_defun([_LT_COMPILER_BOILERPLATE],
+[m4_require([_LT_DECL_SED])dnl
+ac_outfile=conftest.$ac_objext
+echo "$lt_simple_compile_test_code" >conftest.$ac_ext
+eval "$ac_compile" 2>&1 >/dev/null | $SED '/^$/d; /^ *+/d' >conftest.err
+_lt_compiler_boilerplate=`cat conftest.err`
+$RM conftest*
+])# _LT_COMPILER_BOILERPLATE
+
+
+# _LT_LINKER_BOILERPLATE
+# ----------------------
+# Check for linker boilerplate output or warnings with
+# the simple link test code.
+m4_defun([_LT_LINKER_BOILERPLATE],
+[m4_require([_LT_DECL_SED])dnl
+ac_outfile=conftest.$ac_objext
+echo "$lt_simple_link_test_code" >conftest.$ac_ext
+eval "$ac_link" 2>&1 >/dev/null | $SED '/^$/d; /^ *+/d' >conftest.err
+_lt_linker_boilerplate=`cat conftest.err`
+$RM -r conftest*
+])# _LT_LINKER_BOILERPLATE
+
+# _LT_REQUIRED_DARWIN_CHECKS
+# -------------------------
+m4_defun_once([_LT_REQUIRED_DARWIN_CHECKS],[
+ case $host_os in
+ rhapsody* | darwin*)
+ AC_CHECK_TOOL([DSYMUTIL], [dsymutil], [:])
+ AC_CHECK_TOOL([NMEDIT], [nmedit], [:])
+ AC_CHECK_TOOL([LIPO], [lipo], [:])
+ AC_CHECK_TOOL([OTOOL], [otool], [:])
+ AC_CHECK_TOOL([OTOOL64], [otool64], [:])
+ _LT_DECL([], [DSYMUTIL], [1],
+ [Tool to manipulate archived DWARF debug symbol files on Mac OS X])
+ _LT_DECL([], [NMEDIT], [1],
+ [Tool to change global to local symbols on Mac OS X])
+ _LT_DECL([], [LIPO], [1],
+ [Tool to manipulate fat objects and archives on Mac OS X])
+ _LT_DECL([], [OTOOL], [1],
+ [ldd/readelf like tool for Mach-O binaries on Mac OS X])
+ _LT_DECL([], [OTOOL64], [1],
+ [ldd/readelf like tool for 64 bit Mach-O binaries on Mac OS X 10.4])
+
+ AC_CACHE_CHECK([for -single_module linker flag],[lt_cv_apple_cc_single_mod],
+ [lt_cv_apple_cc_single_mod=no
+ if test -z "${LT_MULTI_MODULE}"; then
+ # By default we will add the -single_module flag. You can override
+ # by either setting the environment variable LT_MULTI_MODULE
+ # non-empty at configure time, or by adding -multi_module to the
+ # link flags.
+ rm -rf libconftest.dylib*
+ echo "int foo(void){return 1;}" > conftest.c
+ echo "$LTCC $LTCFLAGS $LDFLAGS -o libconftest.dylib \
+-dynamiclib -Wl,-single_module conftest.c" >&AS_MESSAGE_LOG_FD
+ $LTCC $LTCFLAGS $LDFLAGS -o libconftest.dylib \
+ -dynamiclib -Wl,-single_module conftest.c 2>conftest.err
+ _lt_result=$?
+ if test -f libconftest.dylib && test ! -s conftest.err && test $_lt_result = 0; then
+ lt_cv_apple_cc_single_mod=yes
+ else
+ cat conftest.err >&AS_MESSAGE_LOG_FD
+ fi
+ rm -rf libconftest.dylib*
+ rm -f conftest.*
+ fi])
+ AC_CACHE_CHECK([for -exported_symbols_list linker flag],
+ [lt_cv_ld_exported_symbols_list],
+ [lt_cv_ld_exported_symbols_list=no
+ save_LDFLAGS=$LDFLAGS
+ echo "_main" > conftest.sym
+ LDFLAGS="$LDFLAGS -Wl,-exported_symbols_list,conftest.sym"
+ AC_LINK_IFELSE([AC_LANG_PROGRAM([],[])],
+ [lt_cv_ld_exported_symbols_list=yes],
+ [lt_cv_ld_exported_symbols_list=no])
+ LDFLAGS="$save_LDFLAGS"
+ ])
+ case $host_os in
+ rhapsody* | darwin1.[[012]])
+ _lt_dar_allow_undefined='${wl}-undefined ${wl}suppress' ;;
+ darwin1.*)
+ _lt_dar_allow_undefined='${wl}-flat_namespace ${wl}-undefined ${wl}suppress' ;;
+ darwin*) # darwin 5.x on
+ # if running on 10.5 or later, the deployment target defaults
+ # to the OS version, if on x86, and 10.4, the deployment
+ # target defaults to 10.4. Don't you love it?
+ case ${MACOSX_DEPLOYMENT_TARGET-10.0},$host in
+ 10.0,*86*-darwin8*|10.0,*-darwin[[91]]*)
+ _lt_dar_allow_undefined='${wl}-undefined ${wl}dynamic_lookup' ;;
+ 10.[[012]]*)
+ _lt_dar_allow_undefined='${wl}-flat_namespace ${wl}-undefined ${wl}suppress' ;;
+ 10.*)
+ _lt_dar_allow_undefined='${wl}-undefined ${wl}dynamic_lookup' ;;
+ esac
+ ;;
+ esac
+ if test "$lt_cv_apple_cc_single_mod" = "yes"; then
+ _lt_dar_single_mod='$single_module'
+ fi
+ if test "$lt_cv_ld_exported_symbols_list" = "yes"; then
+ _lt_dar_export_syms=' ${wl}-exported_symbols_list,$output_objdir/${libname}-symbols.expsym'
+ else
+ _lt_dar_export_syms='~$NMEDIT -s $output_objdir/${libname}-symbols.expsym ${lib}'
+ fi
+ if test "$DSYMUTIL" != ":"; then
+ _lt_dsymutil='~$DSYMUTIL $lib || :'
+ else
+ _lt_dsymutil=
+ fi
+ ;;
+ esac
+])
+
+
+# _LT_DARWIN_LINKER_FEATURES
+# --------------------------
+# Checks for linker and compiler features on darwin
+m4_defun([_LT_DARWIN_LINKER_FEATURES],
+[
+ m4_require([_LT_REQUIRED_DARWIN_CHECKS])
+ _LT_TAGVAR(archive_cmds_need_lc, $1)=no
+ _LT_TAGVAR(hardcode_direct, $1)=no
+ _LT_TAGVAR(hardcode_automatic, $1)=yes
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=unsupported
+ _LT_TAGVAR(whole_archive_flag_spec, $1)=''
+ _LT_TAGVAR(link_all_deplibs, $1)=yes
+ _LT_TAGVAR(allow_undefined_flag, $1)="$_lt_dar_allow_undefined"
+ case $cc_basename in
+ ifort*) _lt_dar_can_shared=yes ;;
+ *) _lt_dar_can_shared=$GCC ;;
+ esac
+ if test "$_lt_dar_can_shared" = "yes"; then
+ output_verbose_link_cmd=echo
+ _LT_TAGVAR(archive_cmds, $1)="\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$libobjs \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring $_lt_dar_single_mod${_lt_dsymutil}"
+ _LT_TAGVAR(module_cmds, $1)="\$CC \$allow_undefined_flag -o \$lib -bundle \$libobjs \$deplibs \$compiler_flags${_lt_dsymutil}"
+ _LT_TAGVAR(archive_expsym_cmds, $1)="sed 's,^,_,' < \$export_symbols > \$output_objdir/\${libname}-symbols.expsym~\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$libobjs \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring ${_lt_dar_single_mod}${_lt_dar_export_syms}${_lt_dsymutil}"
+ _LT_TAGVAR(module_expsym_cmds, $1)="sed -e 's,^,_,' < \$export_symbols > \$output_objdir/\${libname}-symbols.expsym~\$CC \$allow_undefined_flag -o \$lib -bundle \$libobjs \$deplibs \$compiler_flags${_lt_dar_export_syms}${_lt_dsymutil}"
+ m4_if([$1], [CXX],
+[ if test "$lt_cv_apple_cc_single_mod" != "yes"; then
+ _LT_TAGVAR(archive_cmds, $1)="\$CC -r -keep_private_externs -nostdlib -o \${lib}-master.o \$libobjs~\$CC -dynamiclib \$allow_undefined_flag -o \$lib \${lib}-master.o \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring${_lt_dsymutil}"
+ _LT_TAGVAR(archive_expsym_cmds, $1)="sed 's,^,_,' < \$export_symbols > \$output_objdir/\${libname}-symbols.expsym~\$CC -r -keep_private_externs -nostdlib -o \${lib}-master.o \$libobjs~\$CC -dynamiclib \$allow_undefined_flag -o \$lib \${lib}-master.o \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring${_lt_dar_export_syms}${_lt_dsymutil}"
+ fi
+],[])
+ else
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ fi
+])
+
+# _LT_SYS_MODULE_PATH_AIX
+# -----------------------
+# Links a minimal program and checks the executable
+# for the system default hardcoded library path. In most cases,
+# this is /usr/lib:/lib, but when the MPI compilers are used
+# the location of the communication and MPI libs are included too.
+# If we don't find anything, use the default library path according
+# to the aix ld manual.
+m4_defun([_LT_SYS_MODULE_PATH_AIX],
+[m4_require([_LT_DECL_SED])dnl
+AC_LINK_IFELSE(AC_LANG_PROGRAM,[
+lt_aix_libpath_sed='
+ /Import File Strings/,/^$/ {
+ /^0/ {
+ s/^0 *\(.*\)$/\1/
+ p
+ }
+ }'
+aix_libpath=`dump -H conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"`
+# Check for a 64-bit object if we didn't find anything.
+if test -z "$aix_libpath"; then
+ aix_libpath=`dump -HX64 conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"`
+fi],[])
+if test -z "$aix_libpath"; then aix_libpath="/usr/lib:/lib"; fi
+])# _LT_SYS_MODULE_PATH_AIX
+
+
+# _LT_SHELL_INIT(ARG)
+# -------------------
+m4_define([_LT_SHELL_INIT],
+[ifdef([AC_DIVERSION_NOTICE],
+ [AC_DIVERT_PUSH(AC_DIVERSION_NOTICE)],
+ [AC_DIVERT_PUSH(NOTICE)])
+$1
+AC_DIVERT_POP
+])# _LT_SHELL_INIT
+
+
+# _LT_PROG_ECHO_BACKSLASH
+# -----------------------
+# Add some code to the start of the generated configure script which
+# will find an echo command which doesn't interpret backslashes.
+m4_defun([_LT_PROG_ECHO_BACKSLASH],
+[_LT_SHELL_INIT([
+# Check that we are running under the correct shell.
+SHELL=${CONFIG_SHELL-/bin/sh}
+
+case X$lt_ECHO in
+X*--fallback-echo)
+ # Remove one level of quotation (which was required for Make).
+ ECHO=`echo "$lt_ECHO" | sed 's,\\\\\[$]\\[$]0,'[$]0','`
+ ;;
+esac
+
+ECHO=${lt_ECHO-echo}
+if test "X[$]1" = X--no-reexec; then
+ # Discard the --no-reexec flag, and continue.
+ shift
+elif test "X[$]1" = X--fallback-echo; then
+ # Avoid inline document here, it may be left over
+ :
+elif test "X`{ $ECHO '\t'; } 2>/dev/null`" = 'X\t' ; then
+ # Yippee, $ECHO works!
+ :
+else
+ # Restart under the correct shell.
+ exec $SHELL "[$]0" --no-reexec ${1+"[$]@"}
+fi
+
+if test "X[$]1" = X--fallback-echo; then
+ # used as fallback echo
+ shift
+ cat <<_LT_EOF
+[$]*
+_LT_EOF
+ exit 0
+fi
+
+# The HP-UX ksh and POSIX shell print the target directory to stdout
+# if CDPATH is set.
+(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
+
+if test -z "$lt_ECHO"; then
+ if test "X${echo_test_string+set}" != Xset; then
+ # find a string as large as possible, as long as the shell can cope with it
+ for cmd in 'sed 50q "[$]0"' 'sed 20q "[$]0"' 'sed 10q "[$]0"' 'sed 2q "[$]0"' 'echo test'; do
+ # expected sizes: less than 2Kb, 1Kb, 512 bytes, 16 bytes, ...
+ if { echo_test_string=`eval $cmd`; } 2>/dev/null &&
+ { test "X$echo_test_string" = "X$echo_test_string"; } 2>/dev/null
+ then
+ break
+ fi
+ done
+ fi
+
+ if test "X`{ $ECHO '\t'; } 2>/dev/null`" = 'X\t' &&
+ echo_testing_string=`{ $ECHO "$echo_test_string"; } 2>/dev/null` &&
+ test "X$echo_testing_string" = "X$echo_test_string"; then
+ :
+ else
+ # The Solaris, AIX, and Digital Unix default echo programs unquote
+ # backslashes. This makes it impossible to quote backslashes using
+ # echo "$something" | sed 's/\\/\\\\/g'
+ #
+ # So, first we look for a working echo in the user's PATH.
+
+ lt_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
+ for dir in $PATH /usr/ucb; do
+ IFS="$lt_save_ifs"
+ if (test -f $dir/echo || test -f $dir/echo$ac_exeext) &&
+ test "X`($dir/echo '\t') 2>/dev/null`" = 'X\t' &&
+ echo_testing_string=`($dir/echo "$echo_test_string") 2>/dev/null` &&
+ test "X$echo_testing_string" = "X$echo_test_string"; then
+ ECHO="$dir/echo"
+ break
+ fi
+ done
+ IFS="$lt_save_ifs"
+
+ if test "X$ECHO" = Xecho; then
+ # We didn't find a better echo, so look for alternatives.
+ if test "X`{ print -r '\t'; } 2>/dev/null`" = 'X\t' &&
+ echo_testing_string=`{ print -r "$echo_test_string"; } 2>/dev/null` &&
+ test "X$echo_testing_string" = "X$echo_test_string"; then
+ # This shell has a builtin print -r that does the trick.
+ ECHO='print -r'
+ elif { test -f /bin/ksh || test -f /bin/ksh$ac_exeext; } &&
+ test "X$CONFIG_SHELL" != X/bin/ksh; then
+ # If we have ksh, try running configure again with it.
+ ORIGINAL_CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
+ export ORIGINAL_CONFIG_SHELL
+ CONFIG_SHELL=/bin/ksh
+ export CONFIG_SHELL
+ exec $CONFIG_SHELL "[$]0" --no-reexec ${1+"[$]@"}
+ else
+ # Try using printf.
+ ECHO='printf %s\n'
+ if test "X`{ $ECHO '\t'; } 2>/dev/null`" = 'X\t' &&
+ echo_testing_string=`{ $ECHO "$echo_test_string"; } 2>/dev/null` &&
+ test "X$echo_testing_string" = "X$echo_test_string"; then
+ # Cool, printf works
+ :
+ elif echo_testing_string=`($ORIGINAL_CONFIG_SHELL "[$]0" --fallback-echo '\t') 2>/dev/null` &&
+ test "X$echo_testing_string" = 'X\t' &&
+ echo_testing_string=`($ORIGINAL_CONFIG_SHELL "[$]0" --fallback-echo "$echo_test_string") 2>/dev/null` &&
+ test "X$echo_testing_string" = "X$echo_test_string"; then
+ CONFIG_SHELL=$ORIGINAL_CONFIG_SHELL
+ export CONFIG_SHELL
+ SHELL="$CONFIG_SHELL"
+ export SHELL
+ ECHO="$CONFIG_SHELL [$]0 --fallback-echo"
+ elif echo_testing_string=`($CONFIG_SHELL "[$]0" --fallback-echo '\t') 2>/dev/null` &&
+ test "X$echo_testing_string" = 'X\t' &&
+ echo_testing_string=`($CONFIG_SHELL "[$]0" --fallback-echo "$echo_test_string") 2>/dev/null` &&
+ test "X$echo_testing_string" = "X$echo_test_string"; then
+ ECHO="$CONFIG_SHELL [$]0 --fallback-echo"
+ else
+ # maybe with a smaller string...
+ prev=:
+
+ for cmd in 'echo test' 'sed 2q "[$]0"' 'sed 10q "[$]0"' 'sed 20q "[$]0"' 'sed 50q "[$]0"'; do
+ if { test "X$echo_test_string" = "X`eval $cmd`"; } 2>/dev/null
+ then
+ break
+ fi
+ prev="$cmd"
+ done
+
+ if test "$prev" != 'sed 50q "[$]0"'; then
+ echo_test_string=`eval $prev`
+ export echo_test_string
+ exec ${ORIGINAL_CONFIG_SHELL-${CONFIG_SHELL-/bin/sh}} "[$]0" ${1+"[$]@"}
+ else
+ # Oops. We lost completely, so just stick with echo.
+ ECHO=echo
+ fi
+ fi
+ fi
+ fi
+ fi
+fi
+
+# Copy echo and quote the copy suitably for passing to libtool from
+# the Makefile, instead of quoting the original, which is used later.
+lt_ECHO=$ECHO
+if test "X$lt_ECHO" = "X$CONFIG_SHELL [$]0 --fallback-echo"; then
+ lt_ECHO="$CONFIG_SHELL \\\$\[$]0 --fallback-echo"
+fi
+
+AC_SUBST(lt_ECHO)
+])
+_LT_DECL([], [SHELL], [1], [Shell to use when invoking shell scripts])
+_LT_DECL([], [ECHO], [1],
+ [An echo program that does not interpret backslashes])
+])# _LT_PROG_ECHO_BACKSLASH
+
+
+# _LT_ENABLE_LOCK
+# ---------------
+m4_defun([_LT_ENABLE_LOCK],
+[AC_ARG_ENABLE([libtool-lock],
+ [AS_HELP_STRING([--disable-libtool-lock],
+ [avoid locking (might break parallel builds)])])
+test "x$enable_libtool_lock" != xno && enable_libtool_lock=yes
+
+# Some flags need to be propagated to the compiler or linker for good
+# libtool support.
+case $host in
+ia64-*-hpux*)
+ # Find out which ABI we are using.
+ echo 'int i;' > conftest.$ac_ext
+ if AC_TRY_EVAL(ac_compile); then
+ case `/usr/bin/file conftest.$ac_objext` in
+ *ELF-32*)
+ HPUX_IA64_MODE="32"
+ ;;
+ *ELF-64*)
+ HPUX_IA64_MODE="64"
+ ;;
+ esac
+ fi
+ rm -rf conftest*
+ ;;
+*-*-irix6*)
+ # Find out which ABI we are using.
+ echo '[#]line __oline__ "configure"' > conftest.$ac_ext
+ if AC_TRY_EVAL(ac_compile); then
+ if test "$lt_cv_prog_gnu_ld" = yes; then
+ case `/usr/bin/file conftest.$ac_objext` in
+ *32-bit*)
+ LD="${LD-ld} -melf32bsmip"
+ ;;
+ *N32*)
+ LD="${LD-ld} -melf32bmipn32"
+ ;;
+ *64-bit*)
+ LD="${LD-ld} -melf64bmip"
+ ;;
+ esac
+ else
+ case `/usr/bin/file conftest.$ac_objext` in
+ *32-bit*)
+ LD="${LD-ld} -32"
+ ;;
+ *N32*)
+ LD="${LD-ld} -n32"
+ ;;
+ *64-bit*)
+ LD="${LD-ld} -64"
+ ;;
+ esac
+ fi
+ fi
+ rm -rf conftest*
+ ;;
+
+x86_64-*kfreebsd*-gnu|x86_64-*linux*|ppc*-*linux*|powerpc*-*linux*| \
+s390*-*linux*|s390*-*tpf*|sparc*-*linux*)
+ # Find out which ABI we are using.
+ echo 'int i;' > conftest.$ac_ext
+ if AC_TRY_EVAL(ac_compile); then
+ case `/usr/bin/file conftest.o` in
+ *32-bit*)
+ case $host in
+ x86_64-*kfreebsd*-gnu)
+ LD="${LD-ld} -m elf_i386_fbsd"
+ ;;
+ x86_64-*linux*)
+ LD="${LD-ld} -m elf_i386"
+ ;;
+ ppc64-*linux*|powerpc64-*linux*)
+ LD="${LD-ld} -m elf32ppclinux"
+ ;;
+ s390x-*linux*)
+ LD="${LD-ld} -m elf_s390"
+ ;;
+ sparc64-*linux*)
+ LD="${LD-ld} -m elf32_sparc"
+ ;;
+ esac
+ ;;
+ *64-bit*)
+ case $host in
+ x86_64-*kfreebsd*-gnu)
+ LD="${LD-ld} -m elf_x86_64_fbsd"
+ ;;
+ x86_64-*linux*)
+ LD="${LD-ld} -m elf_x86_64"
+ ;;
+ ppc*-*linux*|powerpc*-*linux*)
+ LD="${LD-ld} -m elf64ppc"
+ ;;
+ s390*-*linux*|s390*-*tpf*)
+ LD="${LD-ld} -m elf64_s390"
+ ;;
+ sparc*-*linux*)
+ LD="${LD-ld} -m elf64_sparc"
+ ;;
+ esac
+ ;;
+ esac
+ fi
+ rm -rf conftest*
+ ;;
+
+*-*-sco3.2v5*)
+ # On SCO OpenServer 5, we need -belf to get full-featured binaries.
+ SAVE_CFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS -belf"
+ AC_CACHE_CHECK([whether the C compiler needs -belf], lt_cv_cc_needs_belf,
+ [AC_LANG_PUSH(C)
+ AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],[[]])],[lt_cv_cc_needs_belf=yes],[lt_cv_cc_needs_belf=no])
+ AC_LANG_POP])
+ if test x"$lt_cv_cc_needs_belf" != x"yes"; then
+ # this is probably gcc 2.8.0, egcs 1.0 or newer; no need for -belf
+ CFLAGS="$SAVE_CFLAGS"
+ fi
+ ;;
+sparc*-*solaris*)
+ # Find out which ABI we are using.
+ echo 'int i;' > conftest.$ac_ext
+ if AC_TRY_EVAL(ac_compile); then
+ case `/usr/bin/file conftest.o` in
+ *64-bit*)
+ case $lt_cv_prog_gnu_ld in
+ yes*) LD="${LD-ld} -m elf64_sparc" ;;
+ *)
+ if ${LD-ld} -64 -r -o conftest2.o conftest.o >/dev/null 2>&1; then
+ LD="${LD-ld} -64"
+ fi
+ ;;
+ esac
+ ;;
+ esac
+ fi
+ rm -rf conftest*
+ ;;
+esac
+
+need_locks="$enable_libtool_lock"
+])# _LT_ENABLE_LOCK
+
+
+# _LT_CMD_OLD_ARCHIVE
+# -------------------
+m4_defun([_LT_CMD_OLD_ARCHIVE],
+[AC_CHECK_TOOL(AR, ar, false)
+test -z "$AR" && AR=ar
+test -z "$AR_FLAGS" && AR_FLAGS=cru
+_LT_DECL([], [AR], [1], [The archiver])
+_LT_DECL([], [AR_FLAGS], [1])
+
+AC_CHECK_TOOL(STRIP, strip, :)
+test -z "$STRIP" && STRIP=:
+_LT_DECL([], [STRIP], [1], [A symbol stripping program])
+
+AC_CHECK_TOOL(RANLIB, ranlib, :)
+test -z "$RANLIB" && RANLIB=:
+_LT_DECL([], [RANLIB], [1],
+ [Commands used to install an old-style archive])
+
+# Determine commands to create old-style static archives.
+old_archive_cmds='$AR $AR_FLAGS $oldlib$oldobjs'
+old_postinstall_cmds='chmod 644 $oldlib'
+old_postuninstall_cmds=
+
+if test -n "$RANLIB"; then
+ case $host_os in
+ openbsd*)
+ old_postinstall_cmds="$old_postinstall_cmds~\$RANLIB -t \$oldlib"
+ ;;
+ *)
+ old_postinstall_cmds="$old_postinstall_cmds~\$RANLIB \$oldlib"
+ ;;
+ esac
+ old_archive_cmds="$old_archive_cmds~\$RANLIB \$oldlib"
+fi
+_LT_DECL([], [old_postinstall_cmds], [2])
+_LT_DECL([], [old_postuninstall_cmds], [2])
+_LT_TAGDECL([], [old_archive_cmds], [2],
+ [Commands used to build an old-style archive])
+])# _LT_CMD_OLD_ARCHIVE
+
+
+# _LT_COMPILER_OPTION(MESSAGE, VARIABLE-NAME, FLAGS,
+# [OUTPUT-FILE], [ACTION-SUCCESS], [ACTION-FAILURE])
+# ----------------------------------------------------------------
+# Check whether the given compiler option works
+AC_DEFUN([_LT_COMPILER_OPTION],
+[m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+m4_require([_LT_DECL_SED])dnl
+AC_CACHE_CHECK([$1], [$2],
+ [$2=no
+ m4_if([$4], , [ac_outfile=conftest.$ac_objext], [ac_outfile=$4])
+ echo "$lt_simple_compile_test_code" > conftest.$ac_ext
+ lt_compiler_flag="$3"
+ # Insert the option either (1) after the last *FLAGS variable, or
+ # (2) before a word containing "conftest.", or (3) at the end.
+ # Note that $ac_compile itself does not contain backslashes and begins
+ # with a dollar sign (not a hyphen), so the echo should work correctly.
+ # The option is referenced via a variable to avoid confusing sed.
+ lt_compile=`echo "$ac_compile" | $SED \
+ -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
+ -e 's: [[^ ]]*conftest\.: $lt_compiler_flag&:; t' \
+ -e 's:$: $lt_compiler_flag:'`
+ (eval echo "\"\$as_me:__oline__: $lt_compile\"" >&AS_MESSAGE_LOG_FD)
+ (eval "$lt_compile" 2>conftest.err)
+ ac_status=$?
+ cat conftest.err >&AS_MESSAGE_LOG_FD
+ echo "$as_me:__oline__: \$? = $ac_status" >&AS_MESSAGE_LOG_FD
+ if (exit $ac_status) && test -s "$ac_outfile"; then
+ # The compiler can only warn and ignore the option if not recognized
+ # So say no if there are warnings other than the usual output.
+ $ECHO "X$_lt_compiler_boilerplate" | $Xsed -e '/^$/d' >conftest.exp
+ $SED '/^$/d; /^ *+/d' conftest.err >conftest.er2
+ if test ! -s conftest.er2 || diff conftest.exp conftest.er2 >/dev/null; then
+ $2=yes
+ fi
+ fi
+ $RM conftest*
+])
+
+if test x"[$]$2" = xyes; then
+ m4_if([$5], , :, [$5])
+else
+ m4_if([$6], , :, [$6])
+fi
+])# _LT_COMPILER_OPTION
+
+# Old name:
+AU_ALIAS([AC_LIBTOOL_COMPILER_OPTION], [_LT_COMPILER_OPTION])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LIBTOOL_COMPILER_OPTION], [])
+
+
+# _LT_LINKER_OPTION(MESSAGE, VARIABLE-NAME, FLAGS,
+# [ACTION-SUCCESS], [ACTION-FAILURE])
+# ----------------------------------------------------
+# Check whether the given linker option works
+AC_DEFUN([_LT_LINKER_OPTION],
+[m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+m4_require([_LT_DECL_SED])dnl
+AC_CACHE_CHECK([$1], [$2],
+ [$2=no
+ save_LDFLAGS="$LDFLAGS"
+ LDFLAGS="$LDFLAGS $3"
+ echo "$lt_simple_link_test_code" > conftest.$ac_ext
+ if (eval $ac_link 2>conftest.err) && test -s conftest$ac_exeext; then
+ # The linker can only warn and ignore the option if not recognized
+ # So say no if there are warnings
+ if test -s conftest.err; then
+ # Append any errors to the config.log.
+ cat conftest.err 1>&AS_MESSAGE_LOG_FD
+ $ECHO "X$_lt_linker_boilerplate" | $Xsed -e '/^$/d' > conftest.exp
+ $SED '/^$/d; /^ *+/d' conftest.err >conftest.er2
+ if diff conftest.exp conftest.er2 >/dev/null; then
+ $2=yes
+ fi
+ else
+ $2=yes
+ fi
+ fi
+ $RM -r conftest*
+ LDFLAGS="$save_LDFLAGS"
+])
+
+if test x"[$]$2" = xyes; then
+ m4_if([$4], , :, [$4])
+else
+ m4_if([$5], , :, [$5])
+fi
+])# _LT_LINKER_OPTION
+
+# Old name:
+AU_ALIAS([AC_LIBTOOL_LINKER_OPTION], [_LT_LINKER_OPTION])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LIBTOOL_LINKER_OPTION], [])
+
+
+# LT_CMD_MAX_LEN
+#---------------
+AC_DEFUN([LT_CMD_MAX_LEN],
+[AC_REQUIRE([AC_CANONICAL_HOST])dnl
+# find the maximum length of command line arguments
+AC_MSG_CHECKING([the maximum length of command line arguments])
+AC_CACHE_VAL([lt_cv_sys_max_cmd_len], [dnl
+ i=0
+ teststring="ABCD"
+
+ case $build_os in
+ msdosdjgpp*)
+ # On DJGPP, this test can blow up pretty badly due to problems in libc
+ # (any single argument exceeding 2000 bytes causes a buffer overrun
+ # during glob expansion). Even if it were fixed, the result of this
+ # check would be larger than it should be.
+ lt_cv_sys_max_cmd_len=12288; # 12K is about right
+ ;;
+
+ gnu*)
+ # Under GNU Hurd, this test is not required because there is
+ # no limit to the length of command line arguments.
+ # Libtool will interpret -1 as no limit whatsoever
+ lt_cv_sys_max_cmd_len=-1;
+ ;;
+
+ cygwin* | mingw* | cegcc*)
+ # On Win9x/ME, this test blows up -- it succeeds, but takes
+ # about 5 minutes as the teststring grows exponentially.
+ # Worse, since 9x/ME are not pre-emptively multitasking,
+ # you end up with a "frozen" computer, even though with patience
+ # the test eventually succeeds (with a max line length of 256k).
+ # Instead, let's just punt: use the minimum linelength reported by
+ # all of the supported platforms: 8192 (on NT/2K/XP).
+ lt_cv_sys_max_cmd_len=8192;
+ ;;
+
+ amigaos*)
+ # On AmigaOS with pdksh, this test takes hours, literally.
+ # So we just punt and use a minimum line length of 8192.
+ lt_cv_sys_max_cmd_len=8192;
+ ;;
+
+ netbsd* | freebsd* | openbsd* | darwin* | dragonfly*)
+ # This has been around since 386BSD, at least. Likely further.
+ if test -x /sbin/sysctl; then
+ lt_cv_sys_max_cmd_len=`/sbin/sysctl -n kern.argmax`
+ elif test -x /usr/sbin/sysctl; then
+ lt_cv_sys_max_cmd_len=`/usr/sbin/sysctl -n kern.argmax`
+ else
+ lt_cv_sys_max_cmd_len=65536 # usable default for all BSDs
+ fi
+ # And add a safety zone
+ lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \/ 4`
+ lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \* 3`
+ ;;
+
+ interix*)
+ # We know the value 262144 and hardcode it with a safety zone (like BSD)
+ lt_cv_sys_max_cmd_len=196608
+ ;;
+
+ osf*)
+ # Dr. Hans Ekkehard Plesser reports seeing a kernel panic running configure
+ # due to this test when exec_disable_arg_limit is 1 on Tru64. It is not
+ # nice to cause kernel panics so lets avoid the loop below.
+ # First set a reasonable default.
+ lt_cv_sys_max_cmd_len=16384
+ #
+ if test -x /sbin/sysconfig; then
+ case `/sbin/sysconfig -q proc exec_disable_arg_limit` in
+ *1*) lt_cv_sys_max_cmd_len=-1 ;;
+ esac
+ fi
+ ;;
+ sco3.2v5*)
+ lt_cv_sys_max_cmd_len=102400
+ ;;
+ sysv5* | sco5v6* | sysv4.2uw2*)
+ kargmax=`grep ARG_MAX /etc/conf/cf.d/stune 2>/dev/null`
+ if test -n "$kargmax"; then
+ lt_cv_sys_max_cmd_len=`echo $kargmax | sed 's/.*[[ ]]//'`
+ else
+ lt_cv_sys_max_cmd_len=32768
+ fi
+ ;;
+ *)
+ lt_cv_sys_max_cmd_len=`(getconf ARG_MAX) 2> /dev/null`
+ if test -n "$lt_cv_sys_max_cmd_len"; then
+ lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \/ 4`
+ lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \* 3`
+ else
+ # Make teststring a little bigger before we do anything with it.
+ # a 1K string should be a reasonable start.
+ for i in 1 2 3 4 5 6 7 8 ; do
+ teststring=$teststring$teststring
+ done
+ SHELL=${SHELL-${CONFIG_SHELL-/bin/sh}}
+ # If test is not a shell built-in, we'll probably end up computing a
+ # maximum length that is only half of the actual maximum length, but
+ # we can't tell.
+ while { test "X"`$SHELL [$]0 --fallback-echo "X$teststring$teststring" 2>/dev/null` \
+ = "XX$teststring$teststring"; } >/dev/null 2>&1 &&
+ test $i != 17 # 1/2 MB should be enough
+ do
+ i=`expr $i + 1`
+ teststring=$teststring$teststring
+ done
+ # Only check the string length outside the loop.
+ lt_cv_sys_max_cmd_len=`expr "X$teststring" : ".*" 2>&1`
+ teststring=
+ # Add a significant safety factor because C++ compilers can tack on
+ # massive amounts of additional arguments before passing them to the
+ # linker. It appears as though 1/2 is a usable value.
+ lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \/ 2`
+ fi
+ ;;
+ esac
+])
+if test -n $lt_cv_sys_max_cmd_len ; then
+ AC_MSG_RESULT($lt_cv_sys_max_cmd_len)
+else
+ AC_MSG_RESULT(none)
+fi
+max_cmd_len=$lt_cv_sys_max_cmd_len
+_LT_DECL([], [max_cmd_len], [0],
+ [What is the maximum length of a command?])
+])# LT_CMD_MAX_LEN
+
+# Old name:
+AU_ALIAS([AC_LIBTOOL_SYS_MAX_CMD_LEN], [LT_CMD_MAX_LEN])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LIBTOOL_SYS_MAX_CMD_LEN], [])
+
+
+# _LT_HEADER_DLFCN
+# ----------------
+m4_defun([_LT_HEADER_DLFCN],
+[AC_CHECK_HEADERS([dlfcn.h], [], [], [AC_INCLUDES_DEFAULT])dnl
+])# _LT_HEADER_DLFCN
+
+
+# _LT_TRY_DLOPEN_SELF (ACTION-IF-TRUE, ACTION-IF-TRUE-W-USCORE,
+# ACTION-IF-FALSE, ACTION-IF-CROSS-COMPILING)
+# ----------------------------------------------------------------
+m4_defun([_LT_TRY_DLOPEN_SELF],
+[m4_require([_LT_HEADER_DLFCN])dnl
+if test "$cross_compiling" = yes; then :
+ [$4]
+else
+ lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
+ lt_status=$lt_dlunknown
+ cat > conftest.$ac_ext <<_LT_EOF
+[#line __oline__ "configure"
+#include "confdefs.h"
+
+#if HAVE_DLFCN_H
+#include <dlfcn.h>
+#endif
+
+#include <stdio.h>
+
+#ifdef RTLD_GLOBAL
+# define LT_DLGLOBAL RTLD_GLOBAL
+#else
+# ifdef DL_GLOBAL
+# define LT_DLGLOBAL DL_GLOBAL
+# else
+# define LT_DLGLOBAL 0
+# endif
+#endif
+
+/* We may have to define LT_DLLAZY_OR_NOW in the command line if we
+ find out it does not work in some platform. */
+#ifndef LT_DLLAZY_OR_NOW
+# ifdef RTLD_LAZY
+# define LT_DLLAZY_OR_NOW RTLD_LAZY
+# else
+# ifdef DL_LAZY
+# define LT_DLLAZY_OR_NOW DL_LAZY
+# else
+# ifdef RTLD_NOW
+# define LT_DLLAZY_OR_NOW RTLD_NOW
+# else
+# ifdef DL_NOW
+# define LT_DLLAZY_OR_NOW DL_NOW
+# else
+# define LT_DLLAZY_OR_NOW 0
+# endif
+# endif
+# endif
+# endif
+#endif
+
+void fnord() { int i=42;}
+int main ()
+{
+ void *self = dlopen (0, LT_DLGLOBAL|LT_DLLAZY_OR_NOW);
+ int status = $lt_dlunknown;
+
+ if (self)
+ {
+ if (dlsym (self,"fnord")) status = $lt_dlno_uscore;
+ else if (dlsym( self,"_fnord")) status = $lt_dlneed_uscore;
+ /* dlclose (self); */
+ }
+ else
+ puts (dlerror ());
+
+ return status;
+}]
+_LT_EOF
+ if AC_TRY_EVAL(ac_link) && test -s conftest${ac_exeext} 2>/dev/null; then
+ (./conftest; exit; ) >&AS_MESSAGE_LOG_FD 2>/dev/null
+ lt_status=$?
+ case x$lt_status in
+ x$lt_dlno_uscore) $1 ;;
+ x$lt_dlneed_uscore) $2 ;;
+ x$lt_dlunknown|x*) $3 ;;
+ esac
+ else :
+ # compilation failed
+ $3
+ fi
+fi
+rm -fr conftest*
+])# _LT_TRY_DLOPEN_SELF
+
+
+# LT_SYS_DLOPEN_SELF
+# ------------------
+AC_DEFUN([LT_SYS_DLOPEN_SELF],
+[m4_require([_LT_HEADER_DLFCN])dnl
+if test "x$enable_dlopen" != xyes; then
+ enable_dlopen=unknown
+ enable_dlopen_self=unknown
+ enable_dlopen_self_static=unknown
+else
+ lt_cv_dlopen=no
+ lt_cv_dlopen_libs=
+
+ case $host_os in
+ beos*)
+ lt_cv_dlopen="load_add_on"
+ lt_cv_dlopen_libs=
+ lt_cv_dlopen_self=yes
+ ;;
+
+ mingw* | pw32* | cegcc*)
+ lt_cv_dlopen="LoadLibrary"
+ lt_cv_dlopen_libs=
+ ;;
+
+ cygwin*)
+ lt_cv_dlopen="dlopen"
+ lt_cv_dlopen_libs=
+ ;;
+
+ darwin*)
+ # if libdl is installed we need to link against it
+ AC_CHECK_LIB([dl], [dlopen],
+ [lt_cv_dlopen="dlopen" lt_cv_dlopen_libs="-ldl"],[
+ lt_cv_dlopen="dyld"
+ lt_cv_dlopen_libs=
+ lt_cv_dlopen_self=yes
+ ])
+ ;;
+
+ *)
+ AC_CHECK_FUNC([shl_load],
+ [lt_cv_dlopen="shl_load"],
+ [AC_CHECK_LIB([dld], [shl_load],
+ [lt_cv_dlopen="shl_load" lt_cv_dlopen_libs="-ldld"],
+ [AC_CHECK_FUNC([dlopen],
+ [lt_cv_dlopen="dlopen"],
+ [AC_CHECK_LIB([dl], [dlopen],
+ [lt_cv_dlopen="dlopen" lt_cv_dlopen_libs="-ldl"],
+ [AC_CHECK_LIB([svld], [dlopen],
+ [lt_cv_dlopen="dlopen" lt_cv_dlopen_libs="-lsvld"],
+ [AC_CHECK_LIB([dld], [dld_link],
+ [lt_cv_dlopen="dld_link" lt_cv_dlopen_libs="-ldld"])
+ ])
+ ])
+ ])
+ ])
+ ])
+ ;;
+ esac
+
+ if test "x$lt_cv_dlopen" != xno; then
+ enable_dlopen=yes
+ else
+ enable_dlopen=no
+ fi
+
+ case $lt_cv_dlopen in
+ dlopen)
+ save_CPPFLAGS="$CPPFLAGS"
+ test "x$ac_cv_header_dlfcn_h" = xyes && CPPFLAGS="$CPPFLAGS -DHAVE_DLFCN_H"
+
+ save_LDFLAGS="$LDFLAGS"
+ wl=$lt_prog_compiler_wl eval LDFLAGS=\"\$LDFLAGS $export_dynamic_flag_spec\"
+
+ save_LIBS="$LIBS"
+ LIBS="$lt_cv_dlopen_libs $LIBS"
+
+ AC_CACHE_CHECK([whether a program can dlopen itself],
+ lt_cv_dlopen_self, [dnl
+ _LT_TRY_DLOPEN_SELF(
+ lt_cv_dlopen_self=yes, lt_cv_dlopen_self=yes,
+ lt_cv_dlopen_self=no, lt_cv_dlopen_self=cross)
+ ])
+
+ if test "x$lt_cv_dlopen_self" = xyes; then
+ wl=$lt_prog_compiler_wl eval LDFLAGS=\"\$LDFLAGS $lt_prog_compiler_static\"
+ AC_CACHE_CHECK([whether a statically linked program can dlopen itself],
+ lt_cv_dlopen_self_static, [dnl
+ _LT_TRY_DLOPEN_SELF(
+ lt_cv_dlopen_self_static=yes, lt_cv_dlopen_self_static=yes,
+ lt_cv_dlopen_self_static=no, lt_cv_dlopen_self_static=cross)
+ ])
+ fi
+
+ CPPFLAGS="$save_CPPFLAGS"
+ LDFLAGS="$save_LDFLAGS"
+ LIBS="$save_LIBS"
+ ;;
+ esac
+
+ case $lt_cv_dlopen_self in
+ yes|no) enable_dlopen_self=$lt_cv_dlopen_self ;;
+ *) enable_dlopen_self=unknown ;;
+ esac
+
+ case $lt_cv_dlopen_self_static in
+ yes|no) enable_dlopen_self_static=$lt_cv_dlopen_self_static ;;
+ *) enable_dlopen_self_static=unknown ;;
+ esac
+fi
+_LT_DECL([dlopen_support], [enable_dlopen], [0],
+ [Whether dlopen is supported])
+_LT_DECL([dlopen_self], [enable_dlopen_self], [0],
+ [Whether dlopen of programs is supported])
+_LT_DECL([dlopen_self_static], [enable_dlopen_self_static], [0],
+ [Whether dlopen of statically linked programs is supported])
+])# LT_SYS_DLOPEN_SELF
+
+# Old name:
+AU_ALIAS([AC_LIBTOOL_DLOPEN_SELF], [LT_SYS_DLOPEN_SELF])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LIBTOOL_DLOPEN_SELF], [])
+
+
+# _LT_COMPILER_C_O([TAGNAME])
+# ---------------------------
+# Check to see if options -c and -o are simultaneously supported by compiler.
+# This macro does not hard code the compiler like AC_PROG_CC_C_O.
+m4_defun([_LT_COMPILER_C_O],
+[m4_require([_LT_DECL_SED])dnl
+m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+m4_require([_LT_TAG_COMPILER])dnl
+AC_CACHE_CHECK([if $compiler supports -c -o file.$ac_objext],
+ [_LT_TAGVAR(lt_cv_prog_compiler_c_o, $1)],
+ [_LT_TAGVAR(lt_cv_prog_compiler_c_o, $1)=no
+ $RM -r conftest 2>/dev/null
+ mkdir conftest
+ cd conftest
+ mkdir out
+ echo "$lt_simple_compile_test_code" > conftest.$ac_ext
+
+ lt_compiler_flag="-o out/conftest2.$ac_objext"
+ # Insert the option either (1) after the last *FLAGS variable, or
+ # (2) before a word containing "conftest.", or (3) at the end.
+ # Note that $ac_compile itself does not contain backslashes and begins
+ # with a dollar sign (not a hyphen), so the echo should work correctly.
+ lt_compile=`echo "$ac_compile" | $SED \
+ -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
+ -e 's: [[^ ]]*conftest\.: $lt_compiler_flag&:; t' \
+ -e 's:$: $lt_compiler_flag:'`
+ (eval echo "\"\$as_me:__oline__: $lt_compile\"" >&AS_MESSAGE_LOG_FD)
+ (eval "$lt_compile" 2>out/conftest.err)
+ ac_status=$?
+ cat out/conftest.err >&AS_MESSAGE_LOG_FD
+ echo "$as_me:__oline__: \$? = $ac_status" >&AS_MESSAGE_LOG_FD
+ if (exit $ac_status) && test -s out/conftest2.$ac_objext
+ then
+ # The compiler can only warn and ignore the option if not recognized
+ # So say no if there are warnings
+ $ECHO "X$_lt_compiler_boilerplate" | $Xsed -e '/^$/d' > out/conftest.exp
+ $SED '/^$/d; /^ *+/d' out/conftest.err >out/conftest.er2
+ if test ! -s out/conftest.er2 || diff out/conftest.exp out/conftest.er2 >/dev/null; then
+ _LT_TAGVAR(lt_cv_prog_compiler_c_o, $1)=yes
+ fi
+ fi
+ chmod u+w . 2>&AS_MESSAGE_LOG_FD
+ $RM conftest*
+ # SGI C++ compiler will create directory out/ii_files/ for
+ # template instantiation
+ test -d out/ii_files && $RM out/ii_files/* && rmdir out/ii_files
+ $RM out/* && rmdir out
+ cd ..
+ $RM -r conftest
+ $RM conftest*
+])
+_LT_TAGDECL([compiler_c_o], [lt_cv_prog_compiler_c_o], [1],
+ [Does compiler simultaneously support -c and -o options?])
+])# _LT_COMPILER_C_O
+
+
+# _LT_COMPILER_FILE_LOCKS([TAGNAME])
+# ----------------------------------
+# Check to see if we can do hard links to lock some files if needed
+m4_defun([_LT_COMPILER_FILE_LOCKS],
+[m4_require([_LT_ENABLE_LOCK])dnl
+m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+_LT_COMPILER_C_O([$1])
+
+hard_links="nottested"
+if test "$_LT_TAGVAR(lt_cv_prog_compiler_c_o, $1)" = no && test "$need_locks" != no; then
+ # do not overwrite the value of need_locks provided by the user
+ AC_MSG_CHECKING([if we can lock with hard links])
+ hard_links=yes
+ $RM conftest*
+ ln conftest.a conftest.b 2>/dev/null && hard_links=no
+ touch conftest.a
+ ln conftest.a conftest.b 2>&5 || hard_links=no
+ ln conftest.a conftest.b 2>/dev/null && hard_links=no
+ AC_MSG_RESULT([$hard_links])
+ if test "$hard_links" = no; then
+ AC_MSG_WARN([`$CC' does not support `-c -o', so `make -j' may be unsafe])
+ need_locks=warn
+ fi
+else
+ need_locks=no
+fi
+_LT_DECL([], [need_locks], [1], [Must we lock files when doing compilation?])
+])# _LT_COMPILER_FILE_LOCKS
+
+
+# _LT_CHECK_OBJDIR
+# ----------------
+m4_defun([_LT_CHECK_OBJDIR],
+[AC_CACHE_CHECK([for objdir], [lt_cv_objdir],
+[rm -f .libs 2>/dev/null
+mkdir .libs 2>/dev/null
+if test -d .libs; then
+ lt_cv_objdir=.libs
+else
+ # MS-DOS does not allow filenames that begin with a dot.
+ lt_cv_objdir=_libs
+fi
+rmdir .libs 2>/dev/null])
+objdir=$lt_cv_objdir
+_LT_DECL([], [objdir], [0],
+ [The name of the directory that contains temporary libtool files])dnl
+m4_pattern_allow([LT_OBJDIR])dnl
+AC_DEFINE_UNQUOTED(LT_OBJDIR, "$lt_cv_objdir/",
+ [Define to the sub-directory in which libtool stores uninstalled libraries.])
+])# _LT_CHECK_OBJDIR
+
+
+# _LT_LINKER_HARDCODE_LIBPATH([TAGNAME])
+# --------------------------------------
+# Check hardcoding attributes.
+m4_defun([_LT_LINKER_HARDCODE_LIBPATH],
+[AC_MSG_CHECKING([how to hardcode library paths into programs])
+_LT_TAGVAR(hardcode_action, $1)=
+if test -n "$_LT_TAGVAR(hardcode_libdir_flag_spec, $1)" ||
+ test -n "$_LT_TAGVAR(runpath_var, $1)" ||
+ test "X$_LT_TAGVAR(hardcode_automatic, $1)" = "Xyes" ; then
+
+ # We can hardcode non-existent directories.
+ if test "$_LT_TAGVAR(hardcode_direct, $1)" != no &&
+ # If the only mechanism to avoid hardcoding is shlibpath_var, we
+ # have to relink, otherwise we might link with an installed library
+ # when we should be linking with a yet-to-be-installed one
+ ## test "$_LT_TAGVAR(hardcode_shlibpath_var, $1)" != no &&
+ test "$_LT_TAGVAR(hardcode_minus_L, $1)" != no; then
+ # Linking always hardcodes the temporary library directory.
+ _LT_TAGVAR(hardcode_action, $1)=relink
+ else
+ # We can link without hardcoding, and we can hardcode nonexisting dirs.
+ _LT_TAGVAR(hardcode_action, $1)=immediate
+ fi
+else
+ # We cannot hardcode anything, or else we can only hardcode existing
+ # directories.
+ _LT_TAGVAR(hardcode_action, $1)=unsupported
+fi
+AC_MSG_RESULT([$_LT_TAGVAR(hardcode_action, $1)])
+
+if test "$_LT_TAGVAR(hardcode_action, $1)" = relink ||
+ test "$_LT_TAGVAR(inherit_rpath, $1)" = yes; then
+ # Fast installation is not supported
+ enable_fast_install=no
+elif test "$shlibpath_overrides_runpath" = yes ||
+ test "$enable_shared" = no; then
+ # Fast installation is not necessary
+ enable_fast_install=needless
+fi
+_LT_TAGDECL([], [hardcode_action], [0],
+ [How to hardcode a shared library path into an executable])
+])# _LT_LINKER_HARDCODE_LIBPATH
+
+
+# _LT_CMD_STRIPLIB
+# ----------------
+m4_defun([_LT_CMD_STRIPLIB],
+[m4_require([_LT_DECL_EGREP])
+striplib=
+old_striplib=
+AC_MSG_CHECKING([whether stripping libraries is possible])
+if test -n "$STRIP" && $STRIP -V 2>&1 | $GREP "GNU strip" >/dev/null; then
+ test -z "$old_striplib" && old_striplib="$STRIP --strip-debug"
+ test -z "$striplib" && striplib="$STRIP --strip-unneeded"
+ AC_MSG_RESULT([yes])
+else
+# FIXME - insert some real tests, host_os isn't really good enough
+ case $host_os in
+ darwin*)
+ if test -n "$STRIP" ; then
+ striplib="$STRIP -x"
+ old_striplib="$STRIP -S"
+ AC_MSG_RESULT([yes])
+ else
+ AC_MSG_RESULT([no])
+ fi
+ ;;
+ *)
+ AC_MSG_RESULT([no])
+ ;;
+ esac
+fi
+_LT_DECL([], [old_striplib], [1], [Commands to strip libraries])
+_LT_DECL([], [striplib], [1])
+])# _LT_CMD_STRIPLIB
+
+
+# _LT_SYS_DYNAMIC_LINKER([TAG])
+# -----------------------------
+# PORTME Fill in your ld.so characteristics
+m4_defun([_LT_SYS_DYNAMIC_LINKER],
+[AC_REQUIRE([AC_CANONICAL_HOST])dnl
+m4_require([_LT_DECL_EGREP])dnl
+m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+m4_require([_LT_DECL_OBJDUMP])dnl
+m4_require([_LT_DECL_SED])dnl
+AC_MSG_CHECKING([dynamic linker characteristics])
+m4_if([$1],
+ [], [
+if test "$GCC" = yes; then
+ case $host_os in
+ darwin*) lt_awk_arg="/^libraries:/,/LR/" ;;
+ *) lt_awk_arg="/^libraries:/" ;;
+ esac
+ lt_search_path_spec=`$CC -print-search-dirs | awk $lt_awk_arg | $SED -e "s/^libraries://" -e "s,=/,/,g"`
+ if $ECHO "$lt_search_path_spec" | $GREP ';' >/dev/null ; then
+ # if the path contains ";" then we assume it to be the separator
+ # otherwise default to the standard path separator (i.e. ":") - it is
+ # assumed that no part of a normal pathname contains ";" but that should
+ # okay in the real world where ";" in dirpaths is itself problematic.
+ lt_search_path_spec=`$ECHO "$lt_search_path_spec" | $SED -e 's/;/ /g'`
+ else
+ lt_search_path_spec=`$ECHO "$lt_search_path_spec" | $SED -e "s/$PATH_SEPARATOR/ /g"`
+ fi
+ # Ok, now we have the path, separated by spaces, we can step through it
+ # and add multilib dir if necessary.
+ lt_tmp_lt_search_path_spec=
+ lt_multi_os_dir=`$CC $CPPFLAGS $CFLAGS $LDFLAGS -print-multi-os-directory 2>/dev/null`
+ for lt_sys_path in $lt_search_path_spec; do
+ if test -d "$lt_sys_path/$lt_multi_os_dir"; then
+ lt_tmp_lt_search_path_spec="$lt_tmp_lt_search_path_spec $lt_sys_path/$lt_multi_os_dir"
+ else
+ test -d "$lt_sys_path" && \
+ lt_tmp_lt_search_path_spec="$lt_tmp_lt_search_path_spec $lt_sys_path"
+ fi
+ done
+ lt_search_path_spec=`$ECHO $lt_tmp_lt_search_path_spec | awk '
+BEGIN {RS=" "; FS="/|\n";} {
+ lt_foo="";
+ lt_count=0;
+ for (lt_i = NF; lt_i > 0; lt_i--) {
+ if ($lt_i != "" && $lt_i != ".") {
+ if ($lt_i == "..") {
+ lt_count++;
+ } else {
+ if (lt_count == 0) {
+ lt_foo="/" $lt_i lt_foo;
+ } else {
+ lt_count--;
+ }
+ }
+ }
+ }
+ if (lt_foo != "") { lt_freq[[lt_foo]]++; }
+ if (lt_freq[[lt_foo]] == 1) { print lt_foo; }
+}'`
+ sys_lib_search_path_spec=`$ECHO $lt_search_path_spec`
+else
+ sys_lib_search_path_spec="/lib /usr/lib /usr/local/lib"
+fi])
+library_names_spec=
+libname_spec='lib$name'
+soname_spec=
+shrext_cmds=".so"
+postinstall_cmds=
+postuninstall_cmds=
+finish_cmds=
+finish_eval=
+shlibpath_var=
+shlibpath_overrides_runpath=unknown
+version_type=none
+dynamic_linker="$host_os ld.so"
+sys_lib_dlsearch_path_spec="/lib /usr/lib"
+need_lib_prefix=unknown
+hardcode_into_libs=no
+
+# when you set need_version to no, make sure it does not cause -set_version
+# flags to be left without arguments
+need_version=unknown
+
+case $host_os in
+aix3*)
+ version_type=linux
+ library_names_spec='${libname}${release}${shared_ext}$versuffix $libname.a'
+ shlibpath_var=LIBPATH
+
+ # AIX 3 has no versioning support, so we append a major version to the name.
+ soname_spec='${libname}${release}${shared_ext}$major'
+ ;;
+
+aix[[4-9]]*)
+ version_type=linux
+ need_lib_prefix=no
+ need_version=no
+ hardcode_into_libs=yes
+ if test "$host_cpu" = ia64; then
+ # AIX 5 supports IA64
+ library_names_spec='${libname}${release}${shared_ext}$major ${libname}${release}${shared_ext}$versuffix $libname${shared_ext}'
+ shlibpath_var=LD_LIBRARY_PATH
+ else
+ # With GCC up to 2.95.x, collect2 would create an import file
+ # for dependence libraries. The import file would start with
+ # the line `#! .'. This would cause the generated library to
+ # depend on `.', always an invalid library. This was fixed in
+ # development snapshots of GCC prior to 3.0.
+ case $host_os in
+ aix4 | aix4.[[01]] | aix4.[[01]].*)
+ if { echo '#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 97)'
+ echo ' yes '
+ echo '#endif'; } | ${CC} -E - | $GREP yes > /dev/null; then
+ :
+ else
+ can_build_shared=no
+ fi
+ ;;
+ esac
+ # AIX (on Power*) has no versioning support, so currently we can not hardcode correct
+ # soname into executable. Probably we can add versioning support to
+ # collect2, so additional links can be useful in future.
+ if test "$aix_use_runtimelinking" = yes; then
+ # If using run time linking (on AIX 4.2 or later) use lib<name>.so
+ # instead of lib<name>.a to let people know that these are not
+ # typical AIX shared libraries.
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ else
+ # We preserve .a as extension for shared libraries through AIX4.2
+ # and later when we are not doing run time linking.
+ library_names_spec='${libname}${release}.a $libname.a'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ fi
+ shlibpath_var=LIBPATH
+ fi
+ ;;
+
+amigaos*)
+ case $host_cpu in
+ powerpc)
+ # Since July 2007 AmigaOS4 officially supports .so libraries.
+ # When compiling the executable, add -use-dynld -Lsobjs: to the compileline.
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ ;;
+ m68k)
+ library_names_spec='$libname.ixlibrary $libname.a'
+ # Create ${libname}_ixlibrary.a entries in /sys/libs.
+ finish_eval='for lib in `ls $libdir/*.ixlibrary 2>/dev/null`; do libname=`$ECHO "X$lib" | $Xsed -e '\''s%^.*/\([[^/]]*\)\.ixlibrary$%\1%'\''`; test $RM /sys/libs/${libname}_ixlibrary.a; $show "cd /sys/libs && $LN_S $lib ${libname}_ixlibrary.a"; cd /sys/libs && $LN_S $lib ${libname}_ixlibrary.a || exit 1; done'
+ ;;
+ esac
+ ;;
+
+beos*)
+ library_names_spec='${libname}${shared_ext}'
+ dynamic_linker="$host_os ld.so"
+ shlibpath_var=LIBRARY_PATH
+ ;;
+
+bsdi[[45]]*)
+ version_type=linux
+ need_version=no
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ finish_cmds='PATH="\$PATH:/sbin" ldconfig $libdir'
+ shlibpath_var=LD_LIBRARY_PATH
+ sys_lib_search_path_spec="/shlib /usr/lib /usr/X11/lib /usr/contrib/lib /lib /usr/local/lib"
+ sys_lib_dlsearch_path_spec="/shlib /usr/lib /usr/local/lib"
+ # the default ld.so.conf also contains /usr/contrib/lib and
+ # /usr/X11R6/lib (/usr/X11 is a link to /usr/X11R6), but let us allow
+ # libtool to hard-code these into programs
+ ;;
+
+cygwin* | mingw* | pw32* | cegcc*)
+ version_type=windows
+ shrext_cmds=".dll"
+ need_version=no
+ need_lib_prefix=no
+
+ case $GCC,$host_os in
+ yes,cygwin* | yes,mingw* | yes,pw32* | yes,cegcc*)
+ library_names_spec='$libname.dll.a'
+ # DLL is installed to $(libdir)/../bin by postinstall_cmds
+ postinstall_cmds='base_file=`basename \${file}`~
+ dlpath=`$SHELL 2>&1 -c '\''. $dir/'\''\${base_file}'\''i; echo \$dlname'\''`~
+ dldir=$destdir/`dirname \$dlpath`~
+ test -d \$dldir || mkdir -p \$dldir~
+ $install_prog $dir/$dlname \$dldir/$dlname~
+ chmod a+x \$dldir/$dlname~
+ if test -n '\''$stripme'\'' && test -n '\''$striplib'\''; then
+ eval '\''$striplib \$dldir/$dlname'\'' || exit \$?;
+ fi'
+ postuninstall_cmds='dldll=`$SHELL 2>&1 -c '\''. $file; echo \$dlname'\''`~
+ dlpath=$dir/\$dldll~
+ $RM \$dlpath'
+ shlibpath_overrides_runpath=yes
+
+ case $host_os in
+ cygwin*)
+ # Cygwin DLLs use 'cyg' prefix rather than 'lib'
+ soname_spec='`echo ${libname} | sed -e 's/^lib/cyg/'``echo ${release} | $SED -e 's/[[.]]/-/g'`${versuffix}${shared_ext}'
+ sys_lib_search_path_spec="/usr/lib /lib/w32api /lib /usr/local/lib"
+ ;;
+ mingw* | cegcc*)
+ # MinGW DLLs use traditional 'lib' prefix
+ soname_spec='${libname}`echo ${release} | $SED -e 's/[[.]]/-/g'`${versuffix}${shared_ext}'
+ sys_lib_search_path_spec=`$CC -print-search-dirs | $GREP "^libraries:" | $SED -e "s/^libraries://" -e "s,=/,/,g"`
+ if $ECHO "$sys_lib_search_path_spec" | [$GREP ';[c-zC-Z]:/' >/dev/null]; then
+ # It is most probably a Windows format PATH printed by
+ # mingw gcc, but we are running on Cygwin. Gcc prints its search
+ # path with ; separators, and with drive letters. We can handle the
+ # drive letters (cygwin fileutils understands them), so leave them,
+ # especially as we might pass files found there to a mingw objdump,
+ # which wouldn't understand a cygwinified path. Ahh.
+ sys_lib_search_path_spec=`$ECHO "$sys_lib_search_path_spec" | $SED -e 's/;/ /g'`
+ else
+ sys_lib_search_path_spec=`$ECHO "$sys_lib_search_path_spec" | $SED -e "s/$PATH_SEPARATOR/ /g"`
+ fi
+ ;;
+ pw32*)
+ # pw32 DLLs use 'pw' prefix rather than 'lib'
+ library_names_spec='`echo ${libname} | sed -e 's/^lib/pw/'``echo ${release} | $SED -e 's/[[.]]/-/g'`${versuffix}${shared_ext}'
+ ;;
+ esac
+ ;;
+
+ *)
+ library_names_spec='${libname}`echo ${release} | $SED -e 's/[[.]]/-/g'`${versuffix}${shared_ext} $libname.lib'
+ ;;
+ esac
+ dynamic_linker='Win32 ld.exe'
+ # FIXME: first we should search . and the directory the executable is in
+ shlibpath_var=PATH
+ ;;
+
+darwin* | rhapsody*)
+ dynamic_linker="$host_os dyld"
+ version_type=darwin
+ need_lib_prefix=no
+ need_version=no
+ library_names_spec='${libname}${release}${major}$shared_ext ${libname}$shared_ext'
+ soname_spec='${libname}${release}${major}$shared_ext'
+ shlibpath_overrides_runpath=yes
+ shlibpath_var=DYLD_LIBRARY_PATH
+ shrext_cmds='`test .$module = .yes && echo .so || echo .dylib`'
+m4_if([$1], [],[
+ sys_lib_search_path_spec="$sys_lib_search_path_spec /usr/local/lib"])
+ sys_lib_dlsearch_path_spec='/usr/local/lib /lib /usr/lib'
+ ;;
+
+dgux*)
+ version_type=linux
+ need_lib_prefix=no
+ need_version=no
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname$shared_ext'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ shlibpath_var=LD_LIBRARY_PATH
+ ;;
+
+freebsd1*)
+ dynamic_linker=no
+ ;;
+
+freebsd* | dragonfly*)
+ # DragonFly does not have aout. When/if they implement a new
+ # versioning mechanism, adjust this.
+ if test -x /usr/bin/objformat; then
+ objformat=`/usr/bin/objformat`
+ else
+ case $host_os in
+ freebsd[[123]]*) objformat=aout ;;
+ *) objformat=elf ;;
+ esac
+ fi
+ version_type=freebsd-$objformat
+ case $version_type in
+ freebsd-elf*)
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext} $libname${shared_ext}'
+ need_version=no
+ need_lib_prefix=no
+ ;;
+ freebsd-*)
+ library_names_spec='${libname}${release}${shared_ext}$versuffix $libname${shared_ext}$versuffix'
+ need_version=yes
+ ;;
+ esac
+ shlibpath_var=LD_LIBRARY_PATH
+ case $host_os in
+ freebsd2*)
+ shlibpath_overrides_runpath=yes
+ ;;
+ freebsd3.[[01]]* | freebsdelf3.[[01]]*)
+ shlibpath_overrides_runpath=yes
+ hardcode_into_libs=yes
+ ;;
+ freebsd3.[[2-9]]* | freebsdelf3.[[2-9]]* | \
+ freebsd4.[[0-5]] | freebsdelf4.[[0-5]] | freebsd4.1.1 | freebsdelf4.1.1)
+ shlibpath_overrides_runpath=no
+ hardcode_into_libs=yes
+ ;;
+ *) # from 4.6 on, and DragonFly
+ shlibpath_overrides_runpath=yes
+ hardcode_into_libs=yes
+ ;;
+ esac
+ ;;
+
+gnu*)
+ version_type=linux
+ need_lib_prefix=no
+ need_version=no
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}${major} ${libname}${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ shlibpath_var=LD_LIBRARY_PATH
+ hardcode_into_libs=yes
+ ;;
+
+hpux9* | hpux10* | hpux11*)
+ # Give a soname corresponding to the major version so that dld.sl refuses to
+ # link against other versions.
+ version_type=sunos
+ need_lib_prefix=no
+ need_version=no
+ case $host_cpu in
+ ia64*)
+ shrext_cmds='.so'
+ hardcode_into_libs=yes
+ dynamic_linker="$host_os dld.so"
+ shlibpath_var=LD_LIBRARY_PATH
+ shlibpath_overrides_runpath=yes # Unless +noenvvar is specified.
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ if test "X$HPUX_IA64_MODE" = X32; then
+ sys_lib_search_path_spec="/usr/lib/hpux32 /usr/local/lib/hpux32 /usr/local/lib"
+ else
+ sys_lib_search_path_spec="/usr/lib/hpux64 /usr/local/lib/hpux64"
+ fi
+ sys_lib_dlsearch_path_spec=$sys_lib_search_path_spec
+ ;;
+ hppa*64*)
+ shrext_cmds='.sl'
+ hardcode_into_libs=yes
+ dynamic_linker="$host_os dld.sl"
+ shlibpath_var=LD_LIBRARY_PATH # How should we handle SHLIB_PATH
+ shlibpath_overrides_runpath=yes # Unless +noenvvar is specified.
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ sys_lib_search_path_spec="/usr/lib/pa20_64 /usr/ccs/lib/pa20_64"
+ sys_lib_dlsearch_path_spec=$sys_lib_search_path_spec
+ ;;
+ *)
+ shrext_cmds='.sl'
+ dynamic_linker="$host_os dld.sl"
+ shlibpath_var=SHLIB_PATH
+ shlibpath_overrides_runpath=no # +s is required to enable SHLIB_PATH
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ ;;
+ esac
+ # HP-UX runs *really* slowly unless shared libraries are mode 555.
+ postinstall_cmds='chmod 555 $lib'
+ ;;
+
+interix[[3-9]]*)
+ version_type=linux
+ need_lib_prefix=no
+ need_version=no
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major ${libname}${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ dynamic_linker='Interix 3.x ld.so.1 (PE, like ELF)'
+ shlibpath_var=LD_LIBRARY_PATH
+ shlibpath_overrides_runpath=no
+ hardcode_into_libs=yes
+ ;;
+
+irix5* | irix6* | nonstopux*)
+ case $host_os in
+ nonstopux*) version_type=nonstopux ;;
+ *)
+ if test "$lt_cv_prog_gnu_ld" = yes; then
+ version_type=linux
+ else
+ version_type=irix
+ fi ;;
+ esac
+ need_lib_prefix=no
+ need_version=no
+ soname_spec='${libname}${release}${shared_ext}$major'
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major ${libname}${release}${shared_ext} $libname${shared_ext}'
+ case $host_os in
+ irix5* | nonstopux*)
+ libsuff= shlibsuff=
+ ;;
+ *)
+ case $LD in # libtool.m4 will add one of these switches to LD
+ *-32|*"-32 "|*-melf32bsmip|*"-melf32bsmip ")
+ libsuff= shlibsuff= libmagic=32-bit;;
+ *-n32|*"-n32 "|*-melf32bmipn32|*"-melf32bmipn32 ")
+ libsuff=32 shlibsuff=N32 libmagic=N32;;
+ *-64|*"-64 "|*-melf64bmip|*"-melf64bmip ")
+ libsuff=64 shlibsuff=64 libmagic=64-bit;;
+ *) libsuff= shlibsuff= libmagic=never-match;;
+ esac
+ ;;
+ esac
+ shlibpath_var=LD_LIBRARY${shlibsuff}_PATH
+ shlibpath_overrides_runpath=no
+ sys_lib_search_path_spec="/usr/lib${libsuff} /lib${libsuff} /usr/local/lib${libsuff}"
+ sys_lib_dlsearch_path_spec="/usr/lib${libsuff} /lib${libsuff}"
+ hardcode_into_libs=yes
+ ;;
+
+# No shared lib support for Linux oldld, aout, or coff.
+linux*oldld* | linux*aout* | linux*coff*)
+ dynamic_linker=no
+ ;;
+
+# This must be Linux ELF.
+linux* | k*bsd*-gnu)
+ version_type=linux
+ need_lib_prefix=no
+ need_version=no
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ finish_cmds='PATH="\$PATH:/sbin" ldconfig -n $libdir'
+ shlibpath_var=LD_LIBRARY_PATH
+ shlibpath_overrides_runpath=no
+ # Some binutils ld are patched to set DT_RUNPATH
+ save_LDFLAGS=$LDFLAGS
+ save_libdir=$libdir
+ eval "libdir=/foo; wl=\"$_LT_TAGVAR(lt_prog_compiler_wl, $1)\"; \
+ LDFLAGS=\"\$LDFLAGS $_LT_TAGVAR(hardcode_libdir_flag_spec, $1)\""
+ AC_LINK_IFELSE([AC_LANG_PROGRAM([],[])],
+ [AS_IF([ ($OBJDUMP -p conftest$ac_exeext) 2>/dev/null | grep "RUNPATH.*$libdir" >/dev/null],
+ [shlibpath_overrides_runpath=yes])])
+ LDFLAGS=$save_LDFLAGS
+ libdir=$save_libdir
+
+ # This implies no fast_install, which is unacceptable.
+ # Some rework will be needed to allow for fast_install
+ # before this can be enabled.
+ hardcode_into_libs=yes
+
+ # Append ld.so.conf contents to the search path
+ if test -f /etc/ld.so.conf; then
+ lt_ld_extra=`awk '/^include / { system(sprintf("cd /etc; cat %s 2>/dev/null", \[$]2)); skip = 1; } { if (!skip) print \[$]0; skip = 0; }' < /etc/ld.so.conf | $SED -e 's/#.*//;/^[ ]*hwcap[ ]/d;s/[:, ]/ /g;s/=[^=]*$//;s/=[^= ]* / /g;/^$/d' | tr '\n' ' '`
+ sys_lib_dlsearch_path_spec="/lib /usr/lib $lt_ld_extra"
+ fi
+
+ # We used to test for /lib/ld.so.1 and disable shared libraries on
+ # powerpc, because MkLinux only supported shared libraries with the
+ # GNU dynamic linker. Since this was broken with cross compilers,
+ # most powerpc-linux boxes support dynamic linking these days and
+ # people can always --disable-shared, the test was removed, and we
+ # assume the GNU/Linux dynamic linker is in use.
+ dynamic_linker='GNU/Linux ld.so'
+ ;;
+
+netbsd*)
+ version_type=sunos
+ need_lib_prefix=no
+ need_version=no
+ if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${shared_ext}$versuffix'
+ finish_cmds='PATH="\$PATH:/sbin" ldconfig -m $libdir'
+ dynamic_linker='NetBSD (a.out) ld.so'
+ else
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major ${libname}${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ dynamic_linker='NetBSD ld.elf_so'
+ fi
+ shlibpath_var=LD_LIBRARY_PATH
+ shlibpath_overrides_runpath=yes
+ hardcode_into_libs=yes
+ ;;
+
+newsos6)
+ version_type=linux
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ shlibpath_var=LD_LIBRARY_PATH
+ shlibpath_overrides_runpath=yes
+ ;;
+
+*nto* | *qnx*)
+ version_type=qnx
+ need_lib_prefix=no
+ need_version=no
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ shlibpath_var=LD_LIBRARY_PATH
+ shlibpath_overrides_runpath=no
+ hardcode_into_libs=yes
+ dynamic_linker='ldqnx.so'
+ ;;
+
+openbsd*)
+ version_type=sunos
+ sys_lib_dlsearch_path_spec="/usr/lib"
+ need_lib_prefix=no
+ # Some older versions of OpenBSD (3.3 at least) *do* need versioned libs.
+ case $host_os in
+ openbsd3.3 | openbsd3.3.*) need_version=yes ;;
+ *) need_version=no ;;
+ esac
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${shared_ext}$versuffix'
+ finish_cmds='PATH="\$PATH:/sbin" ldconfig -m $libdir'
+ shlibpath_var=LD_LIBRARY_PATH
+ if test -z "`echo __ELF__ | $CC -E - | $GREP __ELF__`" || test "$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
+ case $host_os in
+ openbsd2.[[89]] | openbsd2.[[89]].*)
+ shlibpath_overrides_runpath=no
+ ;;
+ *)
+ shlibpath_overrides_runpath=yes
+ ;;
+ esac
+ else
+ shlibpath_overrides_runpath=yes
+ fi
+ ;;
+
+os2*)
+ libname_spec='$name'
+ shrext_cmds=".dll"
+ need_lib_prefix=no
+ library_names_spec='$libname${shared_ext} $libname.a'
+ dynamic_linker='OS/2 ld.exe'
+ shlibpath_var=LIBPATH
+ ;;
+
+osf3* | osf4* | osf5*)
+ version_type=osf
+ need_lib_prefix=no
+ need_version=no
+ soname_spec='${libname}${release}${shared_ext}$major'
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ shlibpath_var=LD_LIBRARY_PATH
+ sys_lib_search_path_spec="/usr/shlib /usr/ccs/lib /usr/lib/cmplrs/cc /usr/lib /usr/local/lib /var/shlib"
+ sys_lib_dlsearch_path_spec="$sys_lib_search_path_spec"
+ ;;
+
+rdos*)
+ dynamic_linker=no
+ ;;
+
+solaris*)
+ version_type=linux
+ need_lib_prefix=no
+ need_version=no
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ shlibpath_var=LD_LIBRARY_PATH
+ shlibpath_overrides_runpath=yes
+ hardcode_into_libs=yes
+ # ldd complains unless libraries are executable
+ postinstall_cmds='chmod +x $lib'
+ ;;
+
+sunos4*)
+ version_type=sunos
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${shared_ext}$versuffix'
+ finish_cmds='PATH="\$PATH:/usr/etc" ldconfig $libdir'
+ shlibpath_var=LD_LIBRARY_PATH
+ shlibpath_overrides_runpath=yes
+ if test "$with_gnu_ld" = yes; then
+ need_lib_prefix=no
+ fi
+ need_version=yes
+ ;;
+
+sysv4 | sysv4.3*)
+ version_type=linux
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ shlibpath_var=LD_LIBRARY_PATH
+ case $host_vendor in
+ sni)
+ shlibpath_overrides_runpath=no
+ need_lib_prefix=no
+ runpath_var=LD_RUN_PATH
+ ;;
+ siemens)
+ need_lib_prefix=no
+ ;;
+ motorola)
+ need_lib_prefix=no
+ need_version=no
+ shlibpath_overrides_runpath=no
+ sys_lib_search_path_spec='/lib /usr/lib /usr/ccs/lib'
+ ;;
+ esac
+ ;;
+
+sysv4*MP*)
+ if test -d /usr/nec ;then
+ version_type=linux
+ library_names_spec='$libname${shared_ext}.$versuffix $libname${shared_ext}.$major $libname${shared_ext}'
+ soname_spec='$libname${shared_ext}.$major'
+ shlibpath_var=LD_LIBRARY_PATH
+ fi
+ ;;
+
+sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX* | sysv4*uw2*)
+ version_type=freebsd-elf
+ need_lib_prefix=no
+ need_version=no
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext} $libname${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ shlibpath_var=LD_LIBRARY_PATH
+ shlibpath_overrides_runpath=yes
+ hardcode_into_libs=yes
+ if test "$with_gnu_ld" = yes; then
+ sys_lib_search_path_spec='/usr/local/lib /usr/gnu/lib /usr/ccs/lib /usr/lib /lib'
+ else
+ sys_lib_search_path_spec='/usr/ccs/lib /usr/lib'
+ case $host_os in
+ sco3.2v5*)
+ sys_lib_search_path_spec="$sys_lib_search_path_spec /lib"
+ ;;
+ esac
+ fi
+ sys_lib_dlsearch_path_spec='/usr/lib'
+ ;;
+
+tpf*)
+ # TPF is a cross-target only. Preferred cross-host = GNU/Linux.
+ version_type=linux
+ need_lib_prefix=no
+ need_version=no
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ shlibpath_var=LD_LIBRARY_PATH
+ shlibpath_overrides_runpath=no
+ hardcode_into_libs=yes
+ ;;
+
+uts4*)
+ version_type=linux
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ shlibpath_var=LD_LIBRARY_PATH
+ ;;
+
+*)
+ dynamic_linker=no
+ ;;
+esac
+AC_MSG_RESULT([$dynamic_linker])
+test "$dynamic_linker" = no && can_build_shared=no
+
+variables_saved_for_relink="PATH $shlibpath_var $runpath_var"
+if test "$GCC" = yes; then
+ variables_saved_for_relink="$variables_saved_for_relink GCC_EXEC_PREFIX COMPILER_PATH LIBRARY_PATH"
+fi
+
+if test "${lt_cv_sys_lib_search_path_spec+set}" = set; then
+ sys_lib_search_path_spec="$lt_cv_sys_lib_search_path_spec"
+fi
+if test "${lt_cv_sys_lib_dlsearch_path_spec+set}" = set; then
+ sys_lib_dlsearch_path_spec="$lt_cv_sys_lib_dlsearch_path_spec"
+fi
+
+_LT_DECL([], [variables_saved_for_relink], [1],
+ [Variables whose values should be saved in libtool wrapper scripts and
+ restored at link time])
+_LT_DECL([], [need_lib_prefix], [0],
+ [Do we need the "lib" prefix for modules?])
+_LT_DECL([], [need_version], [0], [Do we need a version for libraries?])
+_LT_DECL([], [version_type], [0], [Library versioning type])
+_LT_DECL([], [runpath_var], [0], [Shared library runtime path variable])
+_LT_DECL([], [shlibpath_var], [0],[Shared library path variable])
+_LT_DECL([], [shlibpath_overrides_runpath], [0],
+ [Is shlibpath searched before the hard-coded library search path?])
+_LT_DECL([], [libname_spec], [1], [Format of library name prefix])
+_LT_DECL([], [library_names_spec], [1],
+ [[List of archive names. First name is the real one, the rest are links.
+ The last name is the one that the linker finds with -lNAME]])
+_LT_DECL([], [soname_spec], [1],
+ [[The coded name of the library, if different from the real name]])
+_LT_DECL([], [postinstall_cmds], [2],
+ [Command to use after installation of a shared archive])
+_LT_DECL([], [postuninstall_cmds], [2],
+ [Command to use after uninstallation of a shared archive])
+_LT_DECL([], [finish_cmds], [2],
+ [Commands used to finish a libtool library installation in a directory])
+_LT_DECL([], [finish_eval], [1],
+ [[As "finish_cmds", except a single script fragment to be evaled but
+ not shown]])
+_LT_DECL([], [hardcode_into_libs], [0],
+ [Whether we should hardcode library paths into libraries])
+_LT_DECL([], [sys_lib_search_path_spec], [2],
+ [Compile-time system search path for libraries])
+_LT_DECL([], [sys_lib_dlsearch_path_spec], [2],
+ [Run-time system search path for libraries])
+])# _LT_SYS_DYNAMIC_LINKER
+
+
+# _LT_PATH_TOOL_PREFIX(TOOL)
+# --------------------------
+# find a file program which can recognize shared library
+AC_DEFUN([_LT_PATH_TOOL_PREFIX],
+[m4_require([_LT_DECL_EGREP])dnl
+AC_MSG_CHECKING([for $1])
+AC_CACHE_VAL(lt_cv_path_MAGIC_CMD,
+[case $MAGIC_CMD in
+[[\\/*] | ?:[\\/]*])
+ lt_cv_path_MAGIC_CMD="$MAGIC_CMD" # Let the user override the test with a path.
+ ;;
+*)
+ lt_save_MAGIC_CMD="$MAGIC_CMD"
+ lt_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
+dnl $ac_dummy forces splitting on constant user-supplied paths.
+dnl POSIX.2 word splitting is done only on the output of word expansions,
+dnl not every word. This closes a longstanding sh security hole.
+ ac_dummy="m4_if([$2], , $PATH, [$2])"
+ for ac_dir in $ac_dummy; do
+ IFS="$lt_save_ifs"
+ test -z "$ac_dir" && ac_dir=.
+ if test -f $ac_dir/$1; then
+ lt_cv_path_MAGIC_CMD="$ac_dir/$1"
+ if test -n "$file_magic_test_file"; then
+ case $deplibs_check_method in
+ "file_magic "*)
+ file_magic_regex=`expr "$deplibs_check_method" : "file_magic \(.*\)"`
+ MAGIC_CMD="$lt_cv_path_MAGIC_CMD"
+ if eval $file_magic_cmd \$file_magic_test_file 2> /dev/null |
+ $EGREP "$file_magic_regex" > /dev/null; then
+ :
+ else
+ cat <<_LT_EOF 1>&2
+
+*** Warning: the command libtool uses to detect shared libraries,
+*** $file_magic_cmd, produces output that libtool cannot recognize.
+*** The result is that libtool may fail to recognize shared libraries
+*** as such. This will affect the creation of libtool libraries that
+*** depend on shared libraries, but programs linked with such libtool
+*** libraries will work regardless of this problem. Nevertheless, you
+*** may want to report the problem to your system manager and/or to
+*** bug-libtool@gnu.org
+
+_LT_EOF
+ fi ;;
+ esac
+ fi
+ break
+ fi
+ done
+ IFS="$lt_save_ifs"
+ MAGIC_CMD="$lt_save_MAGIC_CMD"
+ ;;
+esac])
+MAGIC_CMD="$lt_cv_path_MAGIC_CMD"
+if test -n "$MAGIC_CMD"; then
+ AC_MSG_RESULT($MAGIC_CMD)
+else
+ AC_MSG_RESULT(no)
+fi
+_LT_DECL([], [MAGIC_CMD], [0],
+ [Used to examine libraries when file_magic_cmd begins with "file"])dnl
+])# _LT_PATH_TOOL_PREFIX
+
+# Old name:
+AU_ALIAS([AC_PATH_TOOL_PREFIX], [_LT_PATH_TOOL_PREFIX])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_PATH_TOOL_PREFIX], [])
+
+
+# _LT_PATH_MAGIC
+# --------------
+# find a file program which can recognize a shared library
+m4_defun([_LT_PATH_MAGIC],
+[_LT_PATH_TOOL_PREFIX(${ac_tool_prefix}file, /usr/bin$PATH_SEPARATOR$PATH)
+if test -z "$lt_cv_path_MAGIC_CMD"; then
+ if test -n "$ac_tool_prefix"; then
+ _LT_PATH_TOOL_PREFIX(file, /usr/bin$PATH_SEPARATOR$PATH)
+ else
+ MAGIC_CMD=:
+ fi
+fi
+])# _LT_PATH_MAGIC
+
+
+# LT_PATH_LD
+# ----------
+# find the pathname to the GNU or non-GNU linker
+AC_DEFUN([LT_PATH_LD],
+[AC_REQUIRE([AC_PROG_CC])dnl
+AC_REQUIRE([AC_CANONICAL_HOST])dnl
+AC_REQUIRE([AC_CANONICAL_BUILD])dnl
+m4_require([_LT_DECL_SED])dnl
+m4_require([_LT_DECL_EGREP])dnl
+
+AC_ARG_WITH([gnu-ld],
+ [AS_HELP_STRING([--with-gnu-ld],
+ [assume the C compiler uses GNU ld @<:@default=no@:>@])],
+ [test "$withval" = no || with_gnu_ld=yes],
+ [with_gnu_ld=no])dnl
+
+ac_prog=ld
+if test "$GCC" = yes; then
+ # Check if gcc -print-prog-name=ld gives a path.
+ AC_MSG_CHECKING([for ld used by $CC])
+ case $host in
+ *-*-mingw*)
+ # gcc leaves a trailing carriage return which upsets mingw
+ ac_prog=`($CC -print-prog-name=ld) 2>&5 | tr -d '\015'` ;;
+ *)
+ ac_prog=`($CC -print-prog-name=ld) 2>&5` ;;
+ esac
+ case $ac_prog in
+ # Accept absolute paths.
+ [[\\/]]* | ?:[[\\/]]*)
+ re_direlt='/[[^/]][[^/]]*/\.\./'
+ # Canonicalize the pathname of ld
+ ac_prog=`$ECHO "$ac_prog"| $SED 's%\\\\%/%g'`
+ while $ECHO "$ac_prog" | $GREP "$re_direlt" > /dev/null 2>&1; do
+ ac_prog=`$ECHO $ac_prog| $SED "s%$re_direlt%/%"`
+ done
+ test -z "$LD" && LD="$ac_prog"
+ ;;
+ "")
+ # If it fails, then pretend we aren't using GCC.
+ ac_prog=ld
+ ;;
+ *)
+ # If it is relative, then search for the first ld in PATH.
+ with_gnu_ld=unknown
+ ;;
+ esac
+elif test "$with_gnu_ld" = yes; then
+ AC_MSG_CHECKING([for GNU ld])
+else
+ AC_MSG_CHECKING([for non-GNU ld])
+fi
+AC_CACHE_VAL(lt_cv_path_LD,
+[if test -z "$LD"; then
+ lt_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
+ for ac_dir in $PATH; do
+ IFS="$lt_save_ifs"
+ test -z "$ac_dir" && ac_dir=.
+ if test -f "$ac_dir/$ac_prog" || test -f "$ac_dir/$ac_prog$ac_exeext"; then
+ lt_cv_path_LD="$ac_dir/$ac_prog"
+ # Check to see if the program is GNU ld. I'd rather use --version,
+ # but apparently some variants of GNU ld only accept -v.
+ # Break only if it was the GNU/non-GNU ld that we prefer.
+ case `"$lt_cv_path_LD" -v 2>&1 </dev/null` in
+ *GNU* | *'with BFD'*)
+ test "$with_gnu_ld" != no && break
+ ;;
+ *)
+ test "$with_gnu_ld" != yes && break
+ ;;
+ esac
+ fi
+ done
+ IFS="$lt_save_ifs"
+else
+ lt_cv_path_LD="$LD" # Let the user override the test with a path.
+fi])
+LD="$lt_cv_path_LD"
+if test -n "$LD"; then
+ AC_MSG_RESULT($LD)
+else
+ AC_MSG_RESULT(no)
+fi
+test -z "$LD" && AC_MSG_ERROR([no acceptable ld found in \$PATH])
+_LT_PATH_LD_GNU
+AC_SUBST([LD])
+
+_LT_TAGDECL([], [LD], [1], [The linker used to build libraries])
+])# LT_PATH_LD
+
+# Old names:
+AU_ALIAS([AM_PROG_LD], [LT_PATH_LD])
+AU_ALIAS([AC_PROG_LD], [LT_PATH_LD])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AM_PROG_LD], [])
+dnl AC_DEFUN([AC_PROG_LD], [])
+
+
+# _LT_PATH_LD_GNU
+#- --------------
+m4_defun([_LT_PATH_LD_GNU],
+[AC_CACHE_CHECK([if the linker ($LD) is GNU ld], lt_cv_prog_gnu_ld,
+[# I'd rather use --version here, but apparently some GNU lds only accept -v.
+case `$LD -v 2>&1 </dev/null` in
+*GNU* | *'with BFD'*)
+ lt_cv_prog_gnu_ld=yes
+ ;;
+*)
+ lt_cv_prog_gnu_ld=no
+ ;;
+esac])
+with_gnu_ld=$lt_cv_prog_gnu_ld
+])# _LT_PATH_LD_GNU
+
+
+# _LT_CMD_RELOAD
+# --------------
+# find reload flag for linker
+# -- PORTME Some linkers may need a different reload flag.
+m4_defun([_LT_CMD_RELOAD],
+[AC_CACHE_CHECK([for $LD option to reload object files],
+ lt_cv_ld_reload_flag,
+ [lt_cv_ld_reload_flag='-r'])
+reload_flag=$lt_cv_ld_reload_flag
+case $reload_flag in
+"" | " "*) ;;
+*) reload_flag=" $reload_flag" ;;
+esac
+reload_cmds='$LD$reload_flag -o $output$reload_objs'
+case $host_os in
+ darwin*)
+ if test "$GCC" = yes; then
+ reload_cmds='$LTCC $LTCFLAGS -nostdlib ${wl}-r -o $output$reload_objs'
+ else
+ reload_cmds='$LD$reload_flag -o $output$reload_objs'
+ fi
+ ;;
+esac
+_LT_DECL([], [reload_flag], [1], [How to create reloadable object files])dnl
+_LT_DECL([], [reload_cmds], [2])dnl
+])# _LT_CMD_RELOAD
+
+
+# _LT_CHECK_MAGIC_METHOD
+# ----------------------
+# how to check for library dependencies
+# -- PORTME fill in with the dynamic library characteristics
+m4_defun([_LT_CHECK_MAGIC_METHOD],
+[m4_require([_LT_DECL_EGREP])
+m4_require([_LT_DECL_OBJDUMP])
+AC_CACHE_CHECK([how to recognize dependent libraries],
+lt_cv_deplibs_check_method,
+[lt_cv_file_magic_cmd='$MAGIC_CMD'
+lt_cv_file_magic_test_file=
+lt_cv_deplibs_check_method='unknown'
+# Need to set the preceding variable on all platforms that support
+# interlibrary dependencies.
+# 'none' -- dependencies not supported.
+# `unknown' -- same as none, but documents that we really don't know.
+# 'pass_all' -- all dependencies passed with no checks.
+# 'test_compile' -- check by making test program.
+# 'file_magic [[regex]]' -- check by looking for files in library path
+# which responds to the $file_magic_cmd with a given extended regex.
+# If you have `file' or equivalent on your system and you're not sure
+# whether `pass_all' will *always* work, you probably want this one.
+
+case $host_os in
+aix[[4-9]]*)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+
+beos*)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+
+bsdi[[45]]*)
+ lt_cv_deplibs_check_method='file_magic ELF [[0-9]][[0-9]]*-bit [[ML]]SB (shared object|dynamic lib)'
+ lt_cv_file_magic_cmd='/usr/bin/file -L'
+ lt_cv_file_magic_test_file=/shlib/libc.so
+ ;;
+
+cygwin*)
+ # func_win32_libid is a shell function defined in ltmain.sh
+ lt_cv_deplibs_check_method='file_magic ^x86 archive import|^x86 DLL'
+ lt_cv_file_magic_cmd='func_win32_libid'
+ ;;
+
+mingw* | pw32*)
+ # Base MSYS/MinGW do not provide the 'file' command needed by
+ # func_win32_libid shell function, so use a weaker test based on 'objdump',
+ # unless we find 'file', for example because we are cross-compiling.
+ if ( file / ) >/dev/null 2>&1; then
+ lt_cv_deplibs_check_method='file_magic ^x86 archive import|^x86 DLL'
+ lt_cv_file_magic_cmd='func_win32_libid'
+ else
+ lt_cv_deplibs_check_method='file_magic file format pei*-i386(.*architecture: i386)?'
+ lt_cv_file_magic_cmd='$OBJDUMP -f'
+ fi
+ ;;
+
+cegcc)
+ # use the weaker test based on 'objdump'. See mingw*.
+ lt_cv_deplibs_check_method='file_magic file format pe-arm-.*little(.*architecture: arm)?'
+ lt_cv_file_magic_cmd='$OBJDUMP -f'
+ ;;
+
+darwin* | rhapsody*)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+
+freebsd* | dragonfly*)
+ if echo __ELF__ | $CC -E - | $GREP __ELF__ > /dev/null; then
+ case $host_cpu in
+ i*86 )
+ # Not sure whether the presence of OpenBSD here was a mistake.
+ # Let's accept both of them until this is cleared up.
+ lt_cv_deplibs_check_method='file_magic (FreeBSD|OpenBSD|DragonFly)/i[[3-9]]86 (compact )?demand paged shared library'
+ lt_cv_file_magic_cmd=/usr/bin/file
+ lt_cv_file_magic_test_file=`echo /usr/lib/libc.so.*`
+ ;;
+ esac
+ else
+ lt_cv_deplibs_check_method=pass_all
+ fi
+ ;;
+
+gnu*)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+
+hpux10.20* | hpux11*)
+ lt_cv_file_magic_cmd=/usr/bin/file
+ case $host_cpu in
+ ia64*)
+ lt_cv_deplibs_check_method='file_magic (s[[0-9]][[0-9]][[0-9]]|ELF-[[0-9]][[0-9]]) shared object file - IA64'
+ lt_cv_file_magic_test_file=/usr/lib/hpux32/libc.so
+ ;;
+ hppa*64*)
+ [lt_cv_deplibs_check_method='file_magic (s[0-9][0-9][0-9]|ELF-[0-9][0-9]) shared object file - PA-RISC [0-9].[0-9]']
+ lt_cv_file_magic_test_file=/usr/lib/pa20_64/libc.sl
+ ;;
+ *)
+ lt_cv_deplibs_check_method='file_magic (s[[0-9]][[0-9]][[0-9]]|PA-RISC[[0-9]].[[0-9]]) shared library'
+ lt_cv_file_magic_test_file=/usr/lib/libc.sl
+ ;;
+ esac
+ ;;
+
+interix[[3-9]]*)
+ # PIC code is broken on Interix 3.x, that's why |\.a not |_pic\.a here
+ lt_cv_deplibs_check_method='match_pattern /lib[[^/]]+(\.so|\.a)$'
+ ;;
+
+irix5* | irix6* | nonstopux*)
+ case $LD in
+ *-32|*"-32 ") libmagic=32-bit;;
+ *-n32|*"-n32 ") libmagic=N32;;
+ *-64|*"-64 ") libmagic=64-bit;;
+ *) libmagic=never-match;;
+ esac
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+
+# This must be Linux ELF.
+linux* | k*bsd*-gnu)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+
+netbsd*)
+ if echo __ELF__ | $CC -E - | $GREP __ELF__ > /dev/null; then
+ lt_cv_deplibs_check_method='match_pattern /lib[[^/]]+(\.so\.[[0-9]]+\.[[0-9]]+|_pic\.a)$'
+ else
+ lt_cv_deplibs_check_method='match_pattern /lib[[^/]]+(\.so|_pic\.a)$'
+ fi
+ ;;
+
+newos6*)
+ lt_cv_deplibs_check_method='file_magic ELF [[0-9]][[0-9]]*-bit [[ML]]SB (executable|dynamic lib)'
+ lt_cv_file_magic_cmd=/usr/bin/file
+ lt_cv_file_magic_test_file=/usr/lib/libnls.so
+ ;;
+
+*nto* | *qnx*)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+
+openbsd*)
+ if test -z "`echo __ELF__ | $CC -E - | $GREP __ELF__`" || test "$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
+ lt_cv_deplibs_check_method='match_pattern /lib[[^/]]+(\.so\.[[0-9]]+\.[[0-9]]+|\.so|_pic\.a)$'
+ else
+ lt_cv_deplibs_check_method='match_pattern /lib[[^/]]+(\.so\.[[0-9]]+\.[[0-9]]+|_pic\.a)$'
+ fi
+ ;;
+
+osf3* | osf4* | osf5*)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+
+rdos*)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+
+solaris*)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+
+sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX* | sysv4*uw2*)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+
+sysv4 | sysv4.3*)
+ case $host_vendor in
+ motorola)
+ lt_cv_deplibs_check_method='file_magic ELF [[0-9]][[0-9]]*-bit [[ML]]SB (shared object|dynamic lib) M[[0-9]][[0-9]]* Version [[0-9]]'
+ lt_cv_file_magic_test_file=`echo /usr/lib/libc.so*`
+ ;;
+ ncr)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+ sequent)
+ lt_cv_file_magic_cmd='/bin/file'
+ lt_cv_deplibs_check_method='file_magic ELF [[0-9]][[0-9]]*-bit [[LM]]SB (shared object|dynamic lib )'
+ ;;
+ sni)
+ lt_cv_file_magic_cmd='/bin/file'
+ lt_cv_deplibs_check_method="file_magic ELF [[0-9]][[0-9]]*-bit [[LM]]SB dynamic lib"
+ lt_cv_file_magic_test_file=/lib/libc.so
+ ;;
+ siemens)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+ pc)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+ esac
+ ;;
+
+tpf*)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+esac
+])
+file_magic_cmd=$lt_cv_file_magic_cmd
+deplibs_check_method=$lt_cv_deplibs_check_method
+test -z "$deplibs_check_method" && deplibs_check_method=unknown
+
+_LT_DECL([], [deplibs_check_method], [1],
+ [Method to check whether dependent libraries are shared objects])
+_LT_DECL([], [file_magic_cmd], [1],
+ [Command to use when deplibs_check_method == "file_magic"])
+])# _LT_CHECK_MAGIC_METHOD
+
+
+# LT_PATH_NM
+# ----------
+# find the pathname to a BSD- or MS-compatible name lister
+AC_DEFUN([LT_PATH_NM],
+[AC_REQUIRE([AC_PROG_CC])dnl
+AC_CACHE_CHECK([for BSD- or MS-compatible name lister (nm)], lt_cv_path_NM,
+[if test -n "$NM"; then
+ # Let the user override the test.
+ lt_cv_path_NM="$NM"
+else
+ lt_nm_to_check="${ac_tool_prefix}nm"
+ if test -n "$ac_tool_prefix" && test "$build" = "$host"; then
+ lt_nm_to_check="$lt_nm_to_check nm"
+ fi
+ for lt_tmp_nm in $lt_nm_to_check; do
+ lt_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
+ for ac_dir in $PATH /usr/ccs/bin/elf /usr/ccs/bin /usr/ucb /bin; do
+ IFS="$lt_save_ifs"
+ test -z "$ac_dir" && ac_dir=.
+ tmp_nm="$ac_dir/$lt_tmp_nm"
+ if test -f "$tmp_nm" || test -f "$tmp_nm$ac_exeext" ; then
+ # Check to see if the nm accepts a BSD-compat flag.
+ # Adding the `sed 1q' prevents false positives on HP-UX, which says:
+ # nm: unknown option "B" ignored
+ # Tru64's nm complains that /dev/null is an invalid object file
+ case `"$tmp_nm" -B /dev/null 2>&1 | sed '1q'` in
+ */dev/null* | *'Invalid file or object type'*)
+ lt_cv_path_NM="$tmp_nm -B"
+ break
+ ;;
+ *)
+ case `"$tmp_nm" -p /dev/null 2>&1 | sed '1q'` in
+ */dev/null*)
+ lt_cv_path_NM="$tmp_nm -p"
+ break
+ ;;
+ *)
+ lt_cv_path_NM=${lt_cv_path_NM="$tmp_nm"} # keep the first match, but
+ continue # so that we can try to find one that supports BSD flags
+ ;;
+ esac
+ ;;
+ esac
+ fi
+ done
+ IFS="$lt_save_ifs"
+ done
+ : ${lt_cv_path_NM=no}
+fi])
+if test "$lt_cv_path_NM" != "no"; then
+ NM="$lt_cv_path_NM"
+else
+ # Didn't find any BSD compatible name lister, look for dumpbin.
+ AC_CHECK_TOOLS(DUMPBIN, ["dumpbin -symbols" "link -dump -symbols"], :)
+ AC_SUBST([DUMPBIN])
+ if test "$DUMPBIN" != ":"; then
+ NM="$DUMPBIN"
+ fi
+fi
+test -z "$NM" && NM=nm
+AC_SUBST([NM])
+_LT_DECL([], [NM], [1], [A BSD- or MS-compatible name lister])dnl
+
+AC_CACHE_CHECK([the name lister ($NM) interface], [lt_cv_nm_interface],
+ [lt_cv_nm_interface="BSD nm"
+ echo "int some_variable = 0;" > conftest.$ac_ext
+ (eval echo "\"\$as_me:__oline__: $ac_compile\"" >&AS_MESSAGE_LOG_FD)
+ (eval "$ac_compile" 2>conftest.err)
+ cat conftest.err >&AS_MESSAGE_LOG_FD
+ (eval echo "\"\$as_me:__oline__: $NM \\\"conftest.$ac_objext\\\"\"" >&AS_MESSAGE_LOG_FD)
+ (eval "$NM \"conftest.$ac_objext\"" 2>conftest.err > conftest.out)
+ cat conftest.err >&AS_MESSAGE_LOG_FD
+ (eval echo "\"\$as_me:__oline__: output\"" >&AS_MESSAGE_LOG_FD)
+ cat conftest.out >&AS_MESSAGE_LOG_FD
+ if $GREP 'External.*some_variable' conftest.out > /dev/null; then
+ lt_cv_nm_interface="MS dumpbin"
+ fi
+ rm -f conftest*])
+])# LT_PATH_NM
+
+# Old names:
+AU_ALIAS([AM_PROG_NM], [LT_PATH_NM])
+AU_ALIAS([AC_PROG_NM], [LT_PATH_NM])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AM_PROG_NM], [])
+dnl AC_DEFUN([AC_PROG_NM], [])
+
+
+# LT_LIB_M
+# --------
+# check for math library
+AC_DEFUN([LT_LIB_M],
+[AC_REQUIRE([AC_CANONICAL_HOST])dnl
+LIBM=
+case $host in
+*-*-beos* | *-*-cygwin* | *-*-pw32* | *-*-darwin*)
+ # These system don't have libm, or don't need it
+ ;;
+*-ncr-sysv4.3*)
+ AC_CHECK_LIB(mw, _mwvalidcheckl, LIBM="-lmw")
+ AC_CHECK_LIB(m, cos, LIBM="$LIBM -lm")
+ ;;
+*)
+ AC_CHECK_LIB(m, cos, LIBM="-lm")
+ ;;
+esac
+AC_SUBST([LIBM])
+])# LT_LIB_M
+
+# Old name:
+AU_ALIAS([AC_CHECK_LIBM], [LT_LIB_M])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_CHECK_LIBM], [])
+
+
+# _LT_COMPILER_NO_RTTI([TAGNAME])
+# -------------------------------
+m4_defun([_LT_COMPILER_NO_RTTI],
+[m4_require([_LT_TAG_COMPILER])dnl
+
+_LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)=
+
+if test "$GCC" = yes; then
+ _LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)=' -fno-builtin'
+
+ _LT_COMPILER_OPTION([if $compiler supports -fno-rtti -fno-exceptions],
+ lt_cv_prog_compiler_rtti_exceptions,
+ [-fno-rtti -fno-exceptions], [],
+ [_LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)="$_LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1) -fno-rtti -fno-exceptions"])
+fi
+_LT_TAGDECL([no_builtin_flag], [lt_prog_compiler_no_builtin_flag], [1],
+ [Compiler flag to turn off builtin functions])
+])# _LT_COMPILER_NO_RTTI
+
+
+# _LT_CMD_GLOBAL_SYMBOLS
+# ----------------------
+m4_defun([_LT_CMD_GLOBAL_SYMBOLS],
+[AC_REQUIRE([AC_CANONICAL_HOST])dnl
+AC_REQUIRE([AC_PROG_CC])dnl
+AC_REQUIRE([LT_PATH_NM])dnl
+AC_REQUIRE([LT_PATH_LD])dnl
+m4_require([_LT_DECL_SED])dnl
+m4_require([_LT_DECL_EGREP])dnl
+m4_require([_LT_TAG_COMPILER])dnl
+
+# Check for command to grab the raw symbol name followed by C symbol from nm.
+AC_MSG_CHECKING([command to parse $NM output from $compiler object])
+AC_CACHE_VAL([lt_cv_sys_global_symbol_pipe],
+[
+# These are sane defaults that work on at least a few old systems.
+# [They come from Ultrix. What could be older than Ultrix?!! ;)]
+
+# Character class describing NM global symbol codes.
+symcode='[[BCDEGRST]]'
+
+# Regexp to match symbols that can be accessed directly from C.
+sympat='\([[_A-Za-z]][[_A-Za-z0-9]]*\)'
+
+# Define system-specific variables.
+case $host_os in
+aix*)
+ symcode='[[BCDT]]'
+ ;;
+cygwin* | mingw* | pw32* | cegcc*)
+ symcode='[[ABCDGISTW]]'
+ ;;
+hpux*)
+ if test "$host_cpu" = ia64; then
+ symcode='[[ABCDEGRST]]'
+ fi
+ ;;
+irix* | nonstopux*)
+ symcode='[[BCDEGRST]]'
+ ;;
+osf*)
+ symcode='[[BCDEGQRST]]'
+ ;;
+solaris*)
+ symcode='[[BDRT]]'
+ ;;
+sco3.2v5*)
+ symcode='[[DT]]'
+ ;;
+sysv4.2uw2*)
+ symcode='[[DT]]'
+ ;;
+sysv5* | sco5v6* | unixware* | OpenUNIX*)
+ symcode='[[ABDT]]'
+ ;;
+sysv4)
+ symcode='[[DFNSTU]]'
+ ;;
+esac
+
+# If we're using GNU nm, then use its standard symbol codes.
+case `$NM -V 2>&1` in
+*GNU* | *'with BFD'*)
+ symcode='[[ABCDGIRSTW]]' ;;
+esac
+
+# Transform an extracted symbol line into a proper C declaration.
+# Some systems (esp. on ia64) link data and code symbols differently,
+# so use this general approach.
+lt_cv_sys_global_symbol_to_cdecl="sed -n -e 's/^T .* \(.*\)$/extern int \1();/p' -e 's/^$symcode* .* \(.*\)$/extern char \1;/p'"
+
+# Transform an extracted symbol line into symbol name and symbol address
+lt_cv_sys_global_symbol_to_c_name_address="sed -n -e 's/^: \([[^ ]]*\) $/ {\\\"\1\\\", (void *) 0},/p' -e 's/^$symcode* \([[^ ]]*\) \([[^ ]]*\)$/ {\"\2\", (void *) \&\2},/p'"
+lt_cv_sys_global_symbol_to_c_name_address_lib_prefix="sed -n -e 's/^: \([[^ ]]*\) $/ {\\\"\1\\\", (void *) 0},/p' -e 's/^$symcode* \([[^ ]]*\) \(lib[[^ ]]*\)$/ {\"\2\", (void *) \&\2},/p' -e 's/^$symcode* \([[^ ]]*\) \([[^ ]]*\)$/ {\"lib\2\", (void *) \&\2},/p'"
+
+# Handle CRLF in mingw tool chain
+opt_cr=
+case $build_os in
+mingw*)
+ opt_cr=`$ECHO 'x\{0,1\}' | tr x '\015'` # option cr in regexp
+ ;;
+esac
+
+# Try without a prefix underscore, then with it.
+for ac_symprfx in "" "_"; do
+
+ # Transform symcode, sympat, and symprfx into a raw symbol and a C symbol.
+ symxfrm="\\1 $ac_symprfx\\2 \\2"
+
+ # Write the raw and C identifiers.
+ if test "$lt_cv_nm_interface" = "MS dumpbin"; then
+ # Fake it for dumpbin and say T for any non-static function
+ # and D for any global variable.
+ # Also find C++ and __fastcall symbols from MSVC++,
+ # which start with @ or ?.
+ lt_cv_sys_global_symbol_pipe="$AWK ['"\
+" {last_section=section; section=\$ 3};"\
+" /Section length .*#relocs.*(pick any)/{hide[last_section]=1};"\
+" \$ 0!~/External *\|/{next};"\
+" / 0+ UNDEF /{next}; / UNDEF \([^|]\)*()/{next};"\
+" {if(hide[section]) next};"\
+" {f=0}; \$ 0~/\(\).*\|/{f=1}; {printf f ? \"T \" : \"D \"};"\
+" {split(\$ 0, a, /\||\r/); split(a[2], s)};"\
+" s[1]~/^[@?]/{print s[1], s[1]; next};"\
+" s[1]~prfx {split(s[1],t,\"@\"); print t[1], substr(t[1],length(prfx))}"\
+" ' prfx=^$ac_symprfx]"
+ else
+ lt_cv_sys_global_symbol_pipe="sed -n -e 's/^.*[[ ]]\($symcode$symcode*\)[[ ]][[ ]]*$ac_symprfx$sympat$opt_cr$/$symxfrm/p'"
+ fi
+
+ # Check to see that the pipe works correctly.
+ pipe_works=no
+
+ rm -f conftest*
+ cat > conftest.$ac_ext <<_LT_EOF
+#ifdef __cplusplus
+extern "C" {
+#endif
+char nm_test_var;
+void nm_test_func(void);
+void nm_test_func(void){}
+#ifdef __cplusplus
+}
+#endif
+int main(){nm_test_var='a';nm_test_func();return(0);}
+_LT_EOF
+
+ if AC_TRY_EVAL(ac_compile); then
+ # Now try to grab the symbols.
+ nlist=conftest.nm
+ if AC_TRY_EVAL(NM conftest.$ac_objext \| $lt_cv_sys_global_symbol_pipe \> $nlist) && test -s "$nlist"; then
+ # Try sorting and uniquifying the output.
+ if sort "$nlist" | uniq > "$nlist"T; then
+ mv -f "$nlist"T "$nlist"
+ else
+ rm -f "$nlist"T
+ fi
+
+ # Make sure that we snagged all the symbols we need.
+ if $GREP ' nm_test_var$' "$nlist" >/dev/null; then
+ if $GREP ' nm_test_func$' "$nlist" >/dev/null; then
+ cat <<_LT_EOF > conftest.$ac_ext
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+_LT_EOF
+ # Now generate the symbol file.
+ eval "$lt_cv_sys_global_symbol_to_cdecl"' < "$nlist" | $GREP -v main >> conftest.$ac_ext'
+
+ cat <<_LT_EOF >> conftest.$ac_ext
+
+/* The mapping between symbol names and symbols. */
+const struct {
+ const char *name;
+ void *address;
+}
+lt__PROGRAM__LTX_preloaded_symbols[[]] =
+{
+ { "@PROGRAM@", (void *) 0 },
+_LT_EOF
+ $SED "s/^$symcode$symcode* \(.*\) \(.*\)$/ {\"\2\", (void *) \&\2},/" < "$nlist" | $GREP -v main >> conftest.$ac_ext
+ cat <<\_LT_EOF >> conftest.$ac_ext
+ {0, (void *) 0}
+};
+
+/* This works around a problem in FreeBSD linker */
+#ifdef FREEBSD_WORKAROUND
+static const void *lt_preloaded_setup() {
+ return lt__PROGRAM__LTX_preloaded_symbols;
+}
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+_LT_EOF
+ # Now try linking the two files.
+ mv conftest.$ac_objext conftstm.$ac_objext
+ lt_save_LIBS="$LIBS"
+ lt_save_CFLAGS="$CFLAGS"
+ LIBS="conftstm.$ac_objext"
+ CFLAGS="$CFLAGS$_LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)"
+ if AC_TRY_EVAL(ac_link) && test -s conftest${ac_exeext}; then
+ pipe_works=yes
+ fi
+ LIBS="$lt_save_LIBS"
+ CFLAGS="$lt_save_CFLAGS"
+ else
+ echo "cannot find nm_test_func in $nlist" >&AS_MESSAGE_LOG_FD
+ fi
+ else
+ echo "cannot find nm_test_var in $nlist" >&AS_MESSAGE_LOG_FD
+ fi
+ else
+ echo "cannot run $lt_cv_sys_global_symbol_pipe" >&AS_MESSAGE_LOG_FD
+ fi
+ else
+ echo "$progname: failed program was:" >&AS_MESSAGE_LOG_FD
+ cat conftest.$ac_ext >&5
+ fi
+ rm -rf conftest* conftst*
+
+ # Do not use the global_symbol_pipe unless it works.
+ if test "$pipe_works" = yes; then
+ break
+ else
+ lt_cv_sys_global_symbol_pipe=
+ fi
+done
+])
+if test -z "$lt_cv_sys_global_symbol_pipe"; then
+ lt_cv_sys_global_symbol_to_cdecl=
+fi
+if test -z "$lt_cv_sys_global_symbol_pipe$lt_cv_sys_global_symbol_to_cdecl"; then
+ AC_MSG_RESULT(failed)
+else
+ AC_MSG_RESULT(ok)
+fi
+
+_LT_DECL([global_symbol_pipe], [lt_cv_sys_global_symbol_pipe], [1],
+ [Take the output of nm and produce a listing of raw symbols and C names])
+_LT_DECL([global_symbol_to_cdecl], [lt_cv_sys_global_symbol_to_cdecl], [1],
+ [Transform the output of nm in a proper C declaration])
+_LT_DECL([global_symbol_to_c_name_address],
+ [lt_cv_sys_global_symbol_to_c_name_address], [1],
+ [Transform the output of nm in a C name address pair])
+_LT_DECL([global_symbol_to_c_name_address_lib_prefix],
+ [lt_cv_sys_global_symbol_to_c_name_address_lib_prefix], [1],
+ [Transform the output of nm in a C name address pair when lib prefix is needed])
+]) # _LT_CMD_GLOBAL_SYMBOLS
+
+
+# _LT_COMPILER_PIC([TAGNAME])
+# ---------------------------
+m4_defun([_LT_COMPILER_PIC],
+[m4_require([_LT_TAG_COMPILER])dnl
+_LT_TAGVAR(lt_prog_compiler_wl, $1)=
+_LT_TAGVAR(lt_prog_compiler_pic, $1)=
+_LT_TAGVAR(lt_prog_compiler_static, $1)=
+
+AC_MSG_CHECKING([for $compiler option to produce PIC])
+m4_if([$1], [CXX], [
+ # C++ specific cases for pic, static, wl, etc.
+ if test "$GXX" = yes; then
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-static'
+
+ case $host_os in
+ aix*)
+ # All AIX code is PIC.
+ if test "$host_cpu" = ia64; then
+ # AIX 5 now supports IA64 processor
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ fi
+ ;;
+
+ amigaos*)
+ case $host_cpu in
+ powerpc)
+ # see comment about AmigaOS4 .so support
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+ ;;
+ m68k)
+ # FIXME: we need at least 68020 code to build shared libraries, but
+ # adding the `-m68020' flag to GCC prevents building anything better,
+ # like `-m68040'.
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-m68020 -resident32 -malways-restore-a4'
+ ;;
+ esac
+ ;;
+
+ beos* | irix5* | irix6* | nonstopux* | osf3* | osf4* | osf5*)
+ # PIC is the default for these OSes.
+ ;;
+ mingw* | cygwin* | os2* | pw32* | cegcc*)
+ # This hack is so that the source file can tell whether it is being
+ # built for inclusion in a dll (and should export symbols for example).
+ # Although the cygwin gcc ignores -fPIC, still need this for old-style
+ # (--disable-auto-import) libraries
+ m4_if([$1], [GCJ], [],
+ [_LT_TAGVAR(lt_prog_compiler_pic, $1)='-DDLL_EXPORT'])
+ ;;
+ darwin* | rhapsody*)
+ # PIC is the default on this platform
+ # Common symbols not allowed in MH_DYLIB files
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fno-common'
+ ;;
+ *djgpp*)
+ # DJGPP does not support shared libraries at all
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)=
+ ;;
+ interix[[3-9]]*)
+ # Interix 3.x gcc -fpic/-fPIC options generate broken code.
+ # Instead, we relocate shared libraries at runtime.
+ ;;
+ sysv4*MP*)
+ if test -d /usr/nec; then
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)=-Kconform_pic
+ fi
+ ;;
+ hpux*)
+ # PIC is the default for 64-bit PA HP-UX, but not for 32-bit
+ # PA HP-UX. On IA64 HP-UX, PIC is the default but the pic flag
+ # sets the default TLS model and affects inlining.
+ case $host_cpu in
+ hppa*64*)
+ ;;
+ *)
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+ ;;
+ esac
+ ;;
+ *qnx* | *nto*)
+ # QNX uses GNU C++, but need to define -shared option too, otherwise
+ # it will coredump.
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC -shared'
+ ;;
+ *)
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+ ;;
+ esac
+ else
+ case $host_os in
+ aix[[4-9]]*)
+ # All AIX code is PIC.
+ if test "$host_cpu" = ia64; then
+ # AIX 5 now supports IA64 processor
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ else
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-bnso -bI:/lib/syscalls.exp'
+ fi
+ ;;
+ chorus*)
+ case $cc_basename in
+ cxch68*)
+ # Green Hills C++ Compiler
+ # _LT_TAGVAR(lt_prog_compiler_static, $1)="--no_auto_instantiation -u __main -u __premain -u _abort -r $COOL_DIR/lib/libOrb.a $MVME_DIR/lib/CC/libC.a $MVME_DIR/lib/classix/libcx.s.a"
+ ;;
+ esac
+ ;;
+ dgux*)
+ case $cc_basename in
+ ec++*)
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+ ;;
+ ghcx*)
+ # Green Hills C++ Compiler
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-pic'
+ ;;
+ *)
+ ;;
+ esac
+ ;;
+ freebsd* | dragonfly*)
+ # FreeBSD uses GNU C++
+ ;;
+ hpux9* | hpux10* | hpux11*)
+ case $cc_basename in
+ CC*)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='${wl}-a ${wl}archive'
+ if test "$host_cpu" != ia64; then
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='+Z'
+ fi
+ ;;
+ aCC*)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='${wl}-a ${wl}archive'
+ case $host_cpu in
+ hppa*64*|ia64*)
+ # +Z the default
+ ;;
+ *)
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='+Z'
+ ;;
+ esac
+ ;;
+ *)
+ ;;
+ esac
+ ;;
+ interix*)
+ # This is c89, which is MS Visual C++ (no shared libs)
+ # Anyone wants to do a port?
+ ;;
+ irix5* | irix6* | nonstopux*)
+ case $cc_basename in
+ CC*)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared'
+ # CC pic flag -KPIC is the default.
+ ;;
+ *)
+ ;;
+ esac
+ ;;
+ linux* | k*bsd*-gnu)
+ case $cc_basename in
+ KCC*)
+ # KAI C++ Compiler
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='--backend -Wl,'
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+ ;;
+ ecpc* )
+ # old Intel C++ for x86_64 which still supported -KPIC.
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-static'
+ ;;
+ icpc* )
+ # Intel C++, used to be incompatible with GCC.
+ # ICC 10 doesn't accept -KPIC any more.
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-static'
+ ;;
+ pgCC* | pgcpp*)
+ # Portland Group C++ compiler
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fpic'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ ;;
+ cxx*)
+ # Compaq C++
+ # Make sure the PIC flag is empty. It appears that all Alpha
+ # Linux and Compaq Tru64 Unix objects are PIC.
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)=
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared'
+ ;;
+ xlc* | xlC*)
+ # IBM XL 8.0 on PPC
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-qpic'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-qstaticlink'
+ ;;
+ *)
+ case `$CC -V 2>&1 | sed 5q` in
+ *Sun\ C*)
+ # Sun C++ 5.9
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Qoption ld '
+ ;;
+ esac
+ ;;
+ esac
+ ;;
+ lynxos*)
+ ;;
+ m88k*)
+ ;;
+ mvs*)
+ case $cc_basename in
+ cxx*)
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-W c,exportall'
+ ;;
+ *)
+ ;;
+ esac
+ ;;
+ netbsd*)
+ ;;
+ *qnx* | *nto*)
+ # QNX uses GNU C++, but need to define -shared option too, otherwise
+ # it will coredump.
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC -shared'
+ ;;
+ osf3* | osf4* | osf5*)
+ case $cc_basename in
+ KCC*)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='--backend -Wl,'
+ ;;
+ RCC*)
+ # Rational C++ 2.4.1
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-pic'
+ ;;
+ cxx*)
+ # Digital/Compaq C++
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ # Make sure the PIC flag is empty. It appears that all Alpha
+ # Linux and Compaq Tru64 Unix objects are PIC.
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)=
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared'
+ ;;
+ *)
+ ;;
+ esac
+ ;;
+ psos*)
+ ;;
+ solaris*)
+ case $cc_basename in
+ CC*)
+ # Sun C++ 4.2, 5.x and Centerline C++
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Qoption ld '
+ ;;
+ gcx*)
+ # Green Hills C++ Compiler
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-PIC'
+ ;;
+ *)
+ ;;
+ esac
+ ;;
+ sunos4*)
+ case $cc_basename in
+ CC*)
+ # Sun C++ 4.x
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-pic'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ ;;
+ lcc*)
+ # Lucid
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-pic'
+ ;;
+ *)
+ ;;
+ esac
+ ;;
+ sysv5* | unixware* | sco3.2v5* | sco5v6* | OpenUNIX*)
+ case $cc_basename in
+ CC*)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ ;;
+ esac
+ ;;
+ tandem*)
+ case $cc_basename in
+ NCC*)
+ # NonStop-UX NCC 3.20
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+ ;;
+ *)
+ ;;
+ esac
+ ;;
+ vxworks*)
+ ;;
+ *)
+ _LT_TAGVAR(lt_prog_compiler_can_build_shared, $1)=no
+ ;;
+ esac
+ fi
+],
+[
+ if test "$GCC" = yes; then
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-static'
+
+ case $host_os in
+ aix*)
+ # All AIX code is PIC.
+ if test "$host_cpu" = ia64; then
+ # AIX 5 now supports IA64 processor
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ fi
+ ;;
+
+ amigaos*)
+ case $host_cpu in
+ powerpc)
+ # see comment about AmigaOS4 .so support
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+ ;;
+ m68k)
+ # FIXME: we need at least 68020 code to build shared libraries, but
+ # adding the `-m68020' flag to GCC prevents building anything better,
+ # like `-m68040'.
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-m68020 -resident32 -malways-restore-a4'
+ ;;
+ esac
+ ;;
+
+ beos* | irix5* | irix6* | nonstopux* | osf3* | osf4* | osf5*)
+ # PIC is the default for these OSes.
+ ;;
+
+ mingw* | cygwin* | pw32* | os2* | cegcc*)
+ # This hack is so that the source file can tell whether it is being
+ # built for inclusion in a dll (and should export symbols for example).
+ # Although the cygwin gcc ignores -fPIC, still need this for old-style
+ # (--disable-auto-import) libraries
+ m4_if([$1], [GCJ], [],
+ [_LT_TAGVAR(lt_prog_compiler_pic, $1)='-DDLL_EXPORT'])
+ ;;
+
+ darwin* | rhapsody*)
+ # PIC is the default on this platform
+ # Common symbols not allowed in MH_DYLIB files
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fno-common'
+ ;;
+
+ hpux*)
+ # PIC is the default for 64-bit PA HP-UX, but not for 32-bit
+ # PA HP-UX. On IA64 HP-UX, PIC is the default but the pic flag
+ # sets the default TLS model and affects inlining.
+ case $host_cpu in
+ hppa*64*)
+ # +Z the default
+ ;;
+ *)
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+ ;;
+ esac
+ ;;
+
+ interix[[3-9]]*)
+ # Interix 3.x gcc -fpic/-fPIC options generate broken code.
+ # Instead, we relocate shared libraries at runtime.
+ ;;
+
+ msdosdjgpp*)
+ # Just because we use GCC doesn't mean we suddenly get shared libraries
+ # on systems that don't support them.
+ _LT_TAGVAR(lt_prog_compiler_can_build_shared, $1)=no
+ enable_shared=no
+ ;;
+
+ *nto* | *qnx*)
+ # QNX uses GNU C++, but need to define -shared option too, otherwise
+ # it will coredump.
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC -shared'
+ ;;
+
+ sysv4*MP*)
+ if test -d /usr/nec; then
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)=-Kconform_pic
+ fi
+ ;;
+
+ *)
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+ ;;
+ esac
+ else
+ # PORTME Check for flag to pass linker flags through the system compiler.
+ case $host_os in
+ aix*)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ if test "$host_cpu" = ia64; then
+ # AIX 5 now supports IA64 processor
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ else
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-bnso -bI:/lib/syscalls.exp'
+ fi
+ ;;
+
+ mingw* | cygwin* | pw32* | os2* | cegcc*)
+ # This hack is so that the source file can tell whether it is being
+ # built for inclusion in a dll (and should export symbols for example).
+ m4_if([$1], [GCJ], [],
+ [_LT_TAGVAR(lt_prog_compiler_pic, $1)='-DDLL_EXPORT'])
+ ;;
+
+ hpux9* | hpux10* | hpux11*)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ # PIC is the default for IA64 HP-UX and 64-bit HP-UX, but
+ # not for PA HP-UX.
+ case $host_cpu in
+ hppa*64*|ia64*)
+ # +Z the default
+ ;;
+ *)
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='+Z'
+ ;;
+ esac
+ # Is there a better lt_prog_compiler_static that works with the bundled CC?
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='${wl}-a ${wl}archive'
+ ;;
+
+ irix5* | irix6* | nonstopux*)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ # PIC (with -KPIC) is the default.
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared'
+ ;;
+
+ linux* | k*bsd*-gnu)
+ case $cc_basename in
+ # old Intel for x86_64 which still supported -KPIC.
+ ecc*)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-static'
+ ;;
+ # icc used to be incompatible with GCC.
+ # ICC 10 doesn't accept -KPIC any more.
+ icc* | ifort*)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-static'
+ ;;
+ # Lahey Fortran 8.1.
+ lf95*)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='--shared'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='--static'
+ ;;
+ pgcc* | pgf77* | pgf90* | pgf95*)
+ # Portland Group compilers (*not* the Pentium gcc compiler,
+ # which looks to be a dead project)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fpic'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ ;;
+ ccc*)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ # All Alpha code is PIC.
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared'
+ ;;
+ xl*)
+ # IBM XL C 8.0/Fortran 10.1 on PPC
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-qpic'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-qstaticlink'
+ ;;
+ *)
+ case `$CC -V 2>&1 | sed 5q` in
+ *Sun\ C*)
+ # Sun C 5.9
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ ;;
+ *Sun\ F*)
+ # Sun Fortran 8.3 passes all unrecognized flags to the linker
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)=''
+ ;;
+ esac
+ ;;
+ esac
+ ;;
+
+ newsos6)
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ ;;
+
+ *nto* | *qnx*)
+ # QNX uses GNU C++, but need to define -shared option too, otherwise
+ # it will coredump.
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC -shared'
+ ;;
+
+ osf3* | osf4* | osf5*)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ # All OSF/1 code is PIC.
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared'
+ ;;
+
+ rdos*)
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared'
+ ;;
+
+ solaris*)
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ case $cc_basename in
+ f77* | f90* | f95*)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Qoption ld ';;
+ *)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,';;
+ esac
+ ;;
+
+ sunos4*)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Qoption ld '
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-PIC'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ ;;
+
+ sysv4 | sysv4.2uw2* | sysv4.3*)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ ;;
+
+ sysv4*MP*)
+ if test -d /usr/nec ;then
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-Kconform_pic'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ fi
+ ;;
+
+ sysv5* | unixware* | sco3.2v5* | sco5v6* | OpenUNIX*)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ ;;
+
+ unicos*)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ _LT_TAGVAR(lt_prog_compiler_can_build_shared, $1)=no
+ ;;
+
+ uts4*)
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-pic'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ ;;
+
+ *)
+ _LT_TAGVAR(lt_prog_compiler_can_build_shared, $1)=no
+ ;;
+ esac
+ fi
+])
+case $host_os in
+ # For platforms which do not support PIC, -DPIC is meaningless:
+ *djgpp*)
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)=
+ ;;
+ *)
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)="$_LT_TAGVAR(lt_prog_compiler_pic, $1)@&t@m4_if([$1],[],[ -DPIC],[m4_if([$1],[CXX],[ -DPIC],[])])"
+ ;;
+esac
+AC_MSG_RESULT([$_LT_TAGVAR(lt_prog_compiler_pic, $1)])
+_LT_TAGDECL([wl], [lt_prog_compiler_wl], [1],
+ [How to pass a linker flag through the compiler])
+
+#
+# Check to make sure the PIC flag actually works.
+#
+if test -n "$_LT_TAGVAR(lt_prog_compiler_pic, $1)"; then
+ _LT_COMPILER_OPTION([if $compiler PIC flag $_LT_TAGVAR(lt_prog_compiler_pic, $1) works],
+ [_LT_TAGVAR(lt_cv_prog_compiler_pic_works, $1)],
+ [$_LT_TAGVAR(lt_prog_compiler_pic, $1)@&t@m4_if([$1],[],[ -DPIC],[m4_if([$1],[CXX],[ -DPIC],[])])], [],
+ [case $_LT_TAGVAR(lt_prog_compiler_pic, $1) in
+ "" | " "*) ;;
+ *) _LT_TAGVAR(lt_prog_compiler_pic, $1)=" $_LT_TAGVAR(lt_prog_compiler_pic, $1)" ;;
+ esac],
+ [_LT_TAGVAR(lt_prog_compiler_pic, $1)=
+ _LT_TAGVAR(lt_prog_compiler_can_build_shared, $1)=no])
+fi
+_LT_TAGDECL([pic_flag], [lt_prog_compiler_pic], [1],
+ [Additional compiler flags for building library objects])
+
+#
+# Check to make sure the static flag actually works.
+#
+wl=$_LT_TAGVAR(lt_prog_compiler_wl, $1) eval lt_tmp_static_flag=\"$_LT_TAGVAR(lt_prog_compiler_static, $1)\"
+_LT_LINKER_OPTION([if $compiler static flag $lt_tmp_static_flag works],
+ _LT_TAGVAR(lt_cv_prog_compiler_static_works, $1),
+ $lt_tmp_static_flag,
+ [],
+ [_LT_TAGVAR(lt_prog_compiler_static, $1)=])
+_LT_TAGDECL([link_static_flag], [lt_prog_compiler_static], [1],
+ [Compiler flag to prevent dynamic linking])
+])# _LT_COMPILER_PIC
+
+
+# _LT_LINKER_SHLIBS([TAGNAME])
+# ----------------------------
+# See if the linker supports building shared libraries.
+m4_defun([_LT_LINKER_SHLIBS],
+[AC_REQUIRE([LT_PATH_LD])dnl
+AC_REQUIRE([LT_PATH_NM])dnl
+m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+m4_require([_LT_DECL_EGREP])dnl
+m4_require([_LT_DECL_SED])dnl
+m4_require([_LT_CMD_GLOBAL_SYMBOLS])dnl
+m4_require([_LT_TAG_COMPILER])dnl
+AC_MSG_CHECKING([whether the $compiler linker ($LD) supports shared libraries])
+m4_if([$1], [CXX], [
+ _LT_TAGVAR(export_symbols_cmds, $1)='$NM $libobjs $convenience | $global_symbol_pipe | $SED '\''s/.* //'\'' | sort | uniq > $export_symbols'
+ case $host_os in
+ aix[[4-9]]*)
+ # If we're using GNU nm, then we don't want the "-C" option.
+ # -C means demangle to AIX nm, but means don't demangle with GNU nm
+ if $NM -V 2>&1 | $GREP 'GNU' > /dev/null; then
+ _LT_TAGVAR(export_symbols_cmds, $1)='$NM -Bpg $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B")) && ([substr](\$ 3,1,1) != ".")) { print \$ 3 } }'\'' | sort -u > $export_symbols'
+ else
+ _LT_TAGVAR(export_symbols_cmds, $1)='$NM -BCpg $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B")) && ([substr](\$ 3,1,1) != ".")) { print \$ 3 } }'\'' | sort -u > $export_symbols'
+ fi
+ ;;
+ pw32*)
+ _LT_TAGVAR(export_symbols_cmds, $1)="$ltdll_cmds"
+ ;;
+ cygwin* | mingw* | cegcc*)
+ _LT_TAGVAR(export_symbols_cmds, $1)='$NM $libobjs $convenience | $global_symbol_pipe | $SED -e '\''/^[[BCDGRS]][[ ]]/s/.*[[ ]]\([[^ ]]*\)/\1 DATA/;/^.*[[ ]]__nm__/s/^.*[[ ]]__nm__\([[^ ]]*\)[[ ]][[^ ]]*/\1 DATA/;/^I[[ ]]/d;/^[[AITW]][[ ]]/s/.* //'\'' | sort | uniq > $export_symbols'
+ ;;
+ *)
+ _LT_TAGVAR(export_symbols_cmds, $1)='$NM $libobjs $convenience | $global_symbol_pipe | $SED '\''s/.* //'\'' | sort | uniq > $export_symbols'
+ ;;
+ esac
+ _LT_TAGVAR(exclude_expsyms, $1)=['_GLOBAL_OFFSET_TABLE_|_GLOBAL__F[ID]_.*']
+], [
+ runpath_var=
+ _LT_TAGVAR(allow_undefined_flag, $1)=
+ _LT_TAGVAR(always_export_symbols, $1)=no
+ _LT_TAGVAR(archive_cmds, $1)=
+ _LT_TAGVAR(archive_expsym_cmds, $1)=
+ _LT_TAGVAR(compiler_needs_object, $1)=no
+ _LT_TAGVAR(enable_shared_with_static_runtimes, $1)=no
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)=
+ _LT_TAGVAR(export_symbols_cmds, $1)='$NM $libobjs $convenience | $global_symbol_pipe | $SED '\''s/.* //'\'' | sort | uniq > $export_symbols'
+ _LT_TAGVAR(hardcode_automatic, $1)=no
+ _LT_TAGVAR(hardcode_direct, $1)=no
+ _LT_TAGVAR(hardcode_direct_absolute, $1)=no
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)=
+ _LT_TAGVAR(hardcode_libdir_flag_spec_ld, $1)=
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=
+ _LT_TAGVAR(hardcode_minus_L, $1)=no
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=unsupported
+ _LT_TAGVAR(inherit_rpath, $1)=no
+ _LT_TAGVAR(link_all_deplibs, $1)=unknown
+ _LT_TAGVAR(module_cmds, $1)=
+ _LT_TAGVAR(module_expsym_cmds, $1)=
+ _LT_TAGVAR(old_archive_from_new_cmds, $1)=
+ _LT_TAGVAR(old_archive_from_expsyms_cmds, $1)=
+ _LT_TAGVAR(thread_safe_flag_spec, $1)=
+ _LT_TAGVAR(whole_archive_flag_spec, $1)=
+ # include_expsyms should be a list of space-separated symbols to be *always*
+ # included in the symbol list
+ _LT_TAGVAR(include_expsyms, $1)=
+ # exclude_expsyms can be an extended regexp of symbols to exclude
+ # it will be wrapped by ` (' and `)$', so one must not match beginning or
+ # end of line. Example: `a|bc|.*d.*' will exclude the symbols `a' and `bc',
+ # as well as any symbol that contains `d'.
+ _LT_TAGVAR(exclude_expsyms, $1)=['_GLOBAL_OFFSET_TABLE_|_GLOBAL__F[ID]_.*']
+ # Although _GLOBAL_OFFSET_TABLE_ is a valid symbol C name, most a.out
+ # platforms (ab)use it in PIC code, but their linkers get confused if
+ # the symbol is explicitly referenced. Since portable code cannot
+ # rely on this symbol name, it's probably fine to never include it in
+ # preloaded symbol tables.
+ # Exclude shared library initialization/finalization symbols.
+dnl Note also adjust exclude_expsyms for C++ above.
+ extract_expsyms_cmds=
+
+ case $host_os in
+ cygwin* | mingw* | pw32* | cegcc*)
+ # FIXME: the MSVC++ port hasn't been tested in a loooong time
+ # When not using gcc, we currently assume that we are using
+ # Microsoft Visual C++.
+ if test "$GCC" != yes; then
+ with_gnu_ld=no
+ fi
+ ;;
+ interix*)
+ # we just hope/assume this is gcc and not c89 (= MSVC++)
+ with_gnu_ld=yes
+ ;;
+ openbsd*)
+ with_gnu_ld=no
+ ;;
+ esac
+
+ _LT_TAGVAR(ld_shlibs, $1)=yes
+ if test "$with_gnu_ld" = yes; then
+ # If archive_cmds runs LD, not CC, wlarc should be empty
+ wlarc='${wl}'
+
+ # Set some defaults for GNU ld with shared library support. These
+ # are reset later if shared libraries are not supported. Putting them
+ # here allows them to be overridden if necessary.
+ runpath_var=LD_RUN_PATH
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}--export-dynamic'
+ # ancient GNU ld didn't support --whole-archive et. al.
+ if $LD --help 2>&1 | $GREP 'no-whole-archive' > /dev/null; then
+ _LT_TAGVAR(whole_archive_flag_spec, $1)="$wlarc"'--whole-archive$convenience '"$wlarc"'--no-whole-archive'
+ else
+ _LT_TAGVAR(whole_archive_flag_spec, $1)=
+ fi
+ supports_anon_versioning=no
+ case `$LD -v 2>&1` in
+ *\ [[01]].* | *\ 2.[[0-9]].* | *\ 2.10.*) ;; # catch versions < 2.11
+ *\ 2.11.93.0.2\ *) supports_anon_versioning=yes ;; # RH7.3 ...
+ *\ 2.11.92.0.12\ *) supports_anon_versioning=yes ;; # Mandrake 8.2 ...
+ *\ 2.11.*) ;; # other 2.11 versions
+ *) supports_anon_versioning=yes ;;
+ esac
+
+ # See if GNU ld supports shared libraries.
+ case $host_os in
+ aix[[3-9]]*)
+ # On AIX/PPC, the GNU linker is very broken
+ if test "$host_cpu" != ia64; then
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ cat <<_LT_EOF 1>&2
+
+*** Warning: the GNU linker, at least up to release 2.9.1, is reported
+*** to be unable to reliably create shared libraries on AIX.
+*** Therefore, libtool is disabling shared libraries support. If you
+*** really care for shared libraries, you may want to modify your PATH
+*** so that a non-GNU linker is found, and then restart.
+
+_LT_EOF
+ fi
+ ;;
+
+ amigaos*)
+ case $host_cpu in
+ powerpc)
+ # see comment about AmigaOS4 .so support
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)=''
+ ;;
+ m68k)
+ _LT_TAGVAR(archive_cmds, $1)='$RM $output_objdir/a2ixlibrary.data~$ECHO "#define NAME $libname" > $output_objdir/a2ixlibrary.data~$ECHO "#define LIBRARY_ID 1" >> $output_objdir/a2ixlibrary.data~$ECHO "#define VERSION $major" >> $output_objdir/a2ixlibrary.data~$ECHO "#define REVISION $revision" >> $output_objdir/a2ixlibrary.data~$AR $AR_FLAGS $lib $libobjs~$RANLIB $lib~(cd $output_objdir && a2ixlibrary -32)'
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+ _LT_TAGVAR(hardcode_minus_L, $1)=yes
+ ;;
+ esac
+ ;;
+
+ beos*)
+ if $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
+ _LT_TAGVAR(allow_undefined_flag, $1)=unsupported
+ # Joseph Beckenbach <jrb3@best.com> says some releases of gcc
+ # support --undefined. This deserves some investigation. FIXME
+ _LT_TAGVAR(archive_cmds, $1)='$CC -nostart $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ else
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ fi
+ ;;
+
+ cygwin* | mingw* | pw32* | cegcc*)
+ # _LT_TAGVAR(hardcode_libdir_flag_spec, $1) is actually meaningless,
+ # as there is no search path for DLLs.
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+ _LT_TAGVAR(allow_undefined_flag, $1)=unsupported
+ _LT_TAGVAR(always_export_symbols, $1)=no
+ _LT_TAGVAR(enable_shared_with_static_runtimes, $1)=yes
+ _LT_TAGVAR(export_symbols_cmds, $1)='$NM $libobjs $convenience | $global_symbol_pipe | $SED -e '\''/^[[BCDGRS]][[ ]]/s/.*[[ ]]\([[^ ]]*\)/\1 DATA/'\'' | $SED -e '\''/^[[AITW]][[ ]]/s/.*[[ ]]//'\'' | sort | uniq > $export_symbols'
+
+ if $LD --help 2>&1 | $GREP 'auto-import' > /dev/null; then
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags -o $output_objdir/$soname ${wl}--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib'
+ # If the export-symbols file already is a .def file (1st line
+ # is EXPORTS), use it as is; otherwise, prepend...
+ _LT_TAGVAR(archive_expsym_cmds, $1)='if test "x`$SED 1q $export_symbols`" = xEXPORTS; then
+ cp $export_symbols $output_objdir/$soname.def;
+ else
+ echo EXPORTS > $output_objdir/$soname.def;
+ cat $export_symbols >> $output_objdir/$soname.def;
+ fi~
+ $CC -shared $output_objdir/$soname.def $libobjs $deplibs $compiler_flags -o $output_objdir/$soname ${wl}--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib'
+ else
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ fi
+ ;;
+
+ interix[[3-9]]*)
+ _LT_TAGVAR(hardcode_direct, $1)=no
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
+ # Hack: On Interix 3.x, we cannot compile PIC because of a broken gcc.
+ # Instead, shared libraries are loaded at an image base (0x10000000 by
+ # default) and relocated if they conflict, which is a slow very memory
+ # consuming and fragmenting process. To avoid this, we pick a random,
+ # 256 KiB-aligned image base between 0x50000000 and 0x6FFC0000 at link
+ # time. Moving up from 0x10000000 also allows more sbrk(2) space.
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-h,$soname ${wl}--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='sed "s,^,_," $export_symbols >$output_objdir/$soname.expsym~$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-h,$soname ${wl}--retain-symbols-file,$output_objdir/$soname.expsym ${wl}--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
+ ;;
+
+ gnu* | linux* | tpf* | k*bsd*-gnu)
+ tmp_diet=no
+ if test "$host_os" = linux-dietlibc; then
+ case $cc_basename in
+ diet\ *) tmp_diet=yes;; # linux-dietlibc with static linking (!diet-dyn)
+ esac
+ fi
+ if $LD --help 2>&1 | $EGREP ': supported targets:.* elf' > /dev/null \
+ && test "$tmp_diet" = no
+ then
+ tmp_addflag=
+ tmp_sharedflag='-shared'
+ case $cc_basename,$host_cpu in
+ pgcc*) # Portland Group C compiler
+ _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}--whole-archive`for conv in $convenience\"\"; do test -n \"$conv\" && new_convenience=\"$new_convenience,$conv\"; done; $ECHO \"$new_convenience\"` ${wl}--no-whole-archive'
+ tmp_addflag=' $pic_flag'
+ ;;
+ pgf77* | pgf90* | pgf95*) # Portland Group f77 and f90 compilers
+ _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}--whole-archive`for conv in $convenience\"\"; do test -n \"$conv\" && new_convenience=\"$new_convenience,$conv\"; done; $ECHO \"$new_convenience\"` ${wl}--no-whole-archive'
+ tmp_addflag=' $pic_flag -Mnomain' ;;
+ ecc*,ia64* | icc*,ia64*) # Intel C compiler on ia64
+ tmp_addflag=' -i_dynamic' ;;
+ efc*,ia64* | ifort*,ia64*) # Intel Fortran compiler on ia64
+ tmp_addflag=' -i_dynamic -nofor_main' ;;
+ ifc* | ifort*) # Intel Fortran compiler
+ tmp_addflag=' -nofor_main' ;;
+ lf95*) # Lahey Fortran 8.1
+ _LT_TAGVAR(whole_archive_flag_spec, $1)=
+ tmp_sharedflag='--shared' ;;
+ xl[[cC]]*) # IBM XL C 8.0 on PPC (deal with xlf below)
+ tmp_sharedflag='-qmkshrobj'
+ tmp_addflag= ;;
+ esac
+ case `$CC -V 2>&1 | sed 5q` in
+ *Sun\ C*) # Sun C 5.9
+ _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}--whole-archive`new_convenience=; for conv in $convenience\"\"; do test -z \"$conv\" || new_convenience=\"$new_convenience,$conv\"; done; $ECHO \"$new_convenience\"` ${wl}--no-whole-archive'
+ _LT_TAGVAR(compiler_needs_object, $1)=yes
+ tmp_sharedflag='-G' ;;
+ *Sun\ F*) # Sun Fortran 8.3
+ tmp_sharedflag='-G' ;;
+ esac
+ _LT_TAGVAR(archive_cmds, $1)='$CC '"$tmp_sharedflag""$tmp_addflag"' $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+
+ if test "x$supports_anon_versioning" = xyes; then
+ _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $output_objdir/$libname.ver~
+ cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $output_objdir/$libname.ver~
+ echo "local: *; };" >> $output_objdir/$libname.ver~
+ $CC '"$tmp_sharedflag""$tmp_addflag"' $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-version-script ${wl}$output_objdir/$libname.ver -o $lib'
+ fi
+
+ case $cc_basename in
+ xlf*)
+ # IBM XL Fortran 10.1 on PPC cannot create shared libs itself
+ _LT_TAGVAR(whole_archive_flag_spec, $1)='--whole-archive$convenience --no-whole-archive'
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)=
+ _LT_TAGVAR(hardcode_libdir_flag_spec_ld, $1)='-rpath $libdir'
+ _LT_TAGVAR(archive_cmds, $1)='$LD -shared $libobjs $deplibs $compiler_flags -soname $soname -o $lib'
+ if test "x$supports_anon_versioning" = xyes; then
+ _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $output_objdir/$libname.ver~
+ cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $output_objdir/$libname.ver~
+ echo "local: *; };" >> $output_objdir/$libname.ver~
+ $LD -shared $libobjs $deplibs $compiler_flags -soname $soname -version-script $output_objdir/$libname.ver -o $lib'
+ fi
+ ;;
+ esac
+ else
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ fi
+ ;;
+
+ netbsd*)
+ if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then
+ _LT_TAGVAR(archive_cmds, $1)='$LD -Bshareable $libobjs $deplibs $linker_flags -o $lib'
+ wlarc=
+ else
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+ fi
+ ;;
+
+ solaris*)
+ if $LD -v 2>&1 | $GREP 'BFD 2\.8' > /dev/null; then
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ cat <<_LT_EOF 1>&2
+
+*** Warning: The releases 2.8.* of the GNU linker cannot reliably
+*** create shared libraries on Solaris systems. Therefore, libtool
+*** is disabling shared libraries support. We urge you to upgrade GNU
+*** binutils to release 2.9.1 or newer. Another option is to modify
+*** your PATH or compiler configuration so that the native linker is
+*** used, and then restart.
+
+_LT_EOF
+ elif $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+ else
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ fi
+ ;;
+
+ sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX*)
+ case `$LD -v 2>&1` in
+ *\ [[01]].* | *\ 2.[[0-9]].* | *\ 2.1[[0-5]].*)
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ cat <<_LT_EOF 1>&2
+
+*** Warning: Releases of the GNU linker prior to 2.16.91.0.3 can not
+*** reliably create shared libraries on SCO systems. Therefore, libtool
+*** is disabling shared libraries support. We urge you to upgrade GNU
+*** binutils to release 2.16.91.0.3 or newer. Another option is to modify
+*** your PATH or compiler configuration so that the native linker is
+*** used, and then restart.
+
+_LT_EOF
+ ;;
+ *)
+ # For security reasons, it is highly recommended that you always
+ # use absolute paths for naming shared libraries, and exclude the
+ # DT_RUNPATH tag from executables and libraries. But doing so
+ # requires that you compile everything twice, which is a pain.
+ if $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+ else
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ fi
+ ;;
+ esac
+ ;;
+
+ sunos4*)
+ _LT_TAGVAR(archive_cmds, $1)='$LD -assert pure-text -Bshareable -o $lib $libobjs $deplibs $linker_flags'
+ wlarc=
+ _LT_TAGVAR(hardcode_direct, $1)=yes
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ ;;
+
+ *)
+ if $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+ else
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ fi
+ ;;
+ esac
+
+ if test "$_LT_TAGVAR(ld_shlibs, $1)" = no; then
+ runpath_var=
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)=
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)=
+ _LT_TAGVAR(whole_archive_flag_spec, $1)=
+ fi
+ else
+ # PORTME fill in a description of your system's linker (not GNU ld)
+ case $host_os in
+ aix3*)
+ _LT_TAGVAR(allow_undefined_flag, $1)=unsupported
+ _LT_TAGVAR(always_export_symbols, $1)=yes
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$LD -o $output_objdir/$soname $libobjs $deplibs $linker_flags -bE:$export_symbols -T512 -H512 -bM:SRE~$AR $AR_FLAGS $lib $output_objdir/$soname'
+ # Note: this linker hardcodes the directories in LIBPATH if there
+ # are no directories specified by -L.
+ _LT_TAGVAR(hardcode_minus_L, $1)=yes
+ if test "$GCC" = yes && test -z "$lt_prog_compiler_static"; then
+ # Neither direct hardcoding nor static linking is supported with a
+ # broken collect2.
+ _LT_TAGVAR(hardcode_direct, $1)=unsupported
+ fi
+ ;;
+
+ aix[[4-9]]*)
+ if test "$host_cpu" = ia64; then
+ # On IA64, the linker does run time linking by default, so we don't
+ # have to do anything special.
+ aix_use_runtimelinking=no
+ exp_sym_flag='-Bexport'
+ no_entry_flag=""
+ else
+ # If we're using GNU nm, then we don't want the "-C" option.
+ # -C means demangle to AIX nm, but means don't demangle with GNU nm
+ if $NM -V 2>&1 | $GREP 'GNU' > /dev/null; then
+ _LT_TAGVAR(export_symbols_cmds, $1)='$NM -Bpg $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B")) && ([substr](\$ 3,1,1) != ".")) { print \$ 3 } }'\'' | sort -u > $export_symbols'
+ else
+ _LT_TAGVAR(export_symbols_cmds, $1)='$NM -BCpg $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B")) && ([substr](\$ 3,1,1) != ".")) { print \$ 3 } }'\'' | sort -u > $export_symbols'
+ fi
+ aix_use_runtimelinking=no
+
+ # Test if we are trying to use run time linking or normal
+ # AIX style linking. If -brtl is somewhere in LDFLAGS, we
+ # need to do runtime linking.
+ case $host_os in aix4.[[23]]|aix4.[[23]].*|aix[[5-9]]*)
+ for ld_flag in $LDFLAGS; do
+ if (test $ld_flag = "-brtl" || test $ld_flag = "-Wl,-brtl"); then
+ aix_use_runtimelinking=yes
+ break
+ fi
+ done
+ ;;
+ esac
+
+ exp_sym_flag='-bexport'
+ no_entry_flag='-bnoentry'
+ fi
+
+ # When large executables or shared objects are built, AIX ld can
+ # have problems creating the table of contents. If linking a library
+ # or program results in "error TOC overflow" add -mminimal-toc to
+ # CXXFLAGS/CFLAGS for g++/gcc. In the cases where that is not
+ # enough to fix the problem, add -Wl,-bbigtoc to LDFLAGS.
+
+ _LT_TAGVAR(archive_cmds, $1)=''
+ _LT_TAGVAR(hardcode_direct, $1)=yes
+ _LT_TAGVAR(hardcode_direct_absolute, $1)=yes
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=':'
+ _LT_TAGVAR(link_all_deplibs, $1)=yes
+ _LT_TAGVAR(file_list_spec, $1)='${wl}-f,'
+
+ if test "$GCC" = yes; then
+ case $host_os in aix4.[[012]]|aix4.[[012]].*)
+ # We only want to do this on AIX 4.2 and lower, the check
+ # below for broken collect2 doesn't work under 4.3+
+ collect2name=`${CC} -print-prog-name=collect2`
+ if test -f "$collect2name" &&
+ strings "$collect2name" | $GREP resolve_lib_name >/dev/null
+ then
+ # We have reworked collect2
+ :
+ else
+ # We have old collect2
+ _LT_TAGVAR(hardcode_direct, $1)=unsupported
+ # It fails to find uninstalled libraries when the uninstalled
+ # path is not listed in the libpath. Setting hardcode_minus_L
+ # to unsupported forces relinking
+ _LT_TAGVAR(hardcode_minus_L, $1)=yes
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=
+ fi
+ ;;
+ esac
+ shared_flag='-shared'
+ if test "$aix_use_runtimelinking" = yes; then
+ shared_flag="$shared_flag "'${wl}-G'
+ fi
+ else
+ # not using gcc
+ if test "$host_cpu" = ia64; then
+ # VisualAge C++, Version 5.5 for AIX 5L for IA-64, Beta 3 Release
+ # chokes on -Wl,-G. The following line is correct:
+ shared_flag='-G'
+ else
+ if test "$aix_use_runtimelinking" = yes; then
+ shared_flag='${wl}-G'
+ else
+ shared_flag='${wl}-bM:SRE'
+ fi
+ fi
+ fi
+
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-bexpall'
+ # It seems that -bexpall does not export symbols beginning with
+ # underscore (_), so it is better to generate a list of symbols to export.
+ _LT_TAGVAR(always_export_symbols, $1)=yes
+ if test "$aix_use_runtimelinking" = yes; then
+ # Warning - without using the other runtime loading flags (-brtl),
+ # -berok will link without error, but may produce a broken library.
+ _LT_TAGVAR(allow_undefined_flag, $1)='-berok'
+ # Determine the default libpath from the value encoded in an
+ # empty executable.
+ _LT_SYS_MODULE_PATH_AIX
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-blibpath:$libdir:'"$aix_libpath"
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -o $output_objdir/$soname $libobjs $deplibs '"\${wl}$no_entry_flag"' $compiler_flags `if test "x${allow_undefined_flag}" != "x"; then $ECHO "X${wl}${allow_undefined_flag}" | $Xsed; else :; fi` '"\${wl}$exp_sym_flag:\$export_symbols $shared_flag"
+ else
+ if test "$host_cpu" = ia64; then
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-R $libdir:/usr/lib:/lib'
+ _LT_TAGVAR(allow_undefined_flag, $1)="-z nodefs"
+ _LT_TAGVAR(archive_expsym_cmds, $1)="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs '"\${wl}$no_entry_flag"' $compiler_flags ${wl}${allow_undefined_flag} '"\${wl}$exp_sym_flag:\$export_symbols"
+ else
+ # Determine the default libpath from the value encoded in an
+ # empty executable.
+ _LT_SYS_MODULE_PATH_AIX
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-blibpath:$libdir:'"$aix_libpath"
+ # Warning - without using the other run time loading flags,
+ # -berok will link without error, but may produce a broken library.
+ _LT_TAGVAR(no_undefined_flag, $1)=' ${wl}-bernotok'
+ _LT_TAGVAR(allow_undefined_flag, $1)=' ${wl}-berok'
+ # Exported symbols can be pulled into shared objects from archives
+ _LT_TAGVAR(whole_archive_flag_spec, $1)='$convenience'
+ _LT_TAGVAR(archive_cmds_need_lc, $1)=yes
+ # This is similar to how AIX traditionally builds its shared libraries.
+ _LT_TAGVAR(archive_expsym_cmds, $1)="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs ${wl}-bnoentry $compiler_flags ${wl}-bE:$export_symbols${allow_undefined_flag}~$AR $AR_FLAGS $output_objdir/$libname$release.a $output_objdir/$soname'
+ fi
+ fi
+ ;;
+
+ amigaos*)
+ case $host_cpu in
+ powerpc)
+ # see comment about AmigaOS4 .so support
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)=''
+ ;;
+ m68k)
+ _LT_TAGVAR(archive_cmds, $1)='$RM $output_objdir/a2ixlibrary.data~$ECHO "#define NAME $libname" > $output_objdir/a2ixlibrary.data~$ECHO "#define LIBRARY_ID 1" >> $output_objdir/a2ixlibrary.data~$ECHO "#define VERSION $major" >> $output_objdir/a2ixlibrary.data~$ECHO "#define REVISION $revision" >> $output_objdir/a2ixlibrary.data~$AR $AR_FLAGS $lib $libobjs~$RANLIB $lib~(cd $output_objdir && a2ixlibrary -32)'
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+ _LT_TAGVAR(hardcode_minus_L, $1)=yes
+ ;;
+ esac
+ ;;
+
+ bsdi[[45]]*)
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)=-rdynamic
+ ;;
+
+ cygwin* | mingw* | pw32* | cegcc*)
+ # When not using gcc, we currently assume that we are using
+ # Microsoft Visual C++.
+ # hardcode_libdir_flag_spec is actually meaningless, as there is
+ # no search path for DLLs.
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)=' '
+ _LT_TAGVAR(allow_undefined_flag, $1)=unsupported
+ # Tell ltmain to make .lib files, not .a files.
+ libext=lib
+ # Tell ltmain to make .dll files, not .so files.
+ shrext_cmds=".dll"
+ # FIXME: Setting linknames here is a bad hack.
+ _LT_TAGVAR(archive_cmds, $1)='$CC -o $lib $libobjs $compiler_flags `$ECHO "X$deplibs" | $Xsed -e '\''s/ -lc$//'\''` -link -dll~linknames='
+ # The linker will automatically build a .lib file if we build a DLL.
+ _LT_TAGVAR(old_archive_from_new_cmds, $1)='true'
+ # FIXME: Should let the user specify the lib program.
+ _LT_TAGVAR(old_archive_cmds, $1)='lib -OUT:$oldlib$oldobjs$old_deplibs'
+ _LT_TAGVAR(fix_srcfile_path, $1)='`cygpath -w "$srcfile"`'
+ _LT_TAGVAR(enable_shared_with_static_runtimes, $1)=yes
+ ;;
+
+ darwin* | rhapsody*)
+ _LT_DARWIN_LINKER_FEATURES($1)
+ ;;
+
+ dgux*)
+ _LT_TAGVAR(archive_cmds, $1)='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ ;;
+
+ freebsd1*)
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+
+ # FreeBSD 2.2.[012] allows us to include c++rt0.o to get C++ constructor
+ # support. Future versions do this automatically, but an explicit c++rt0.o
+ # does not break anything, and helps significantly (at the cost of a little
+ # extra space).
+ freebsd2.2*)
+ _LT_TAGVAR(archive_cmds, $1)='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags /usr/lib/c++rt0.o'
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
+ _LT_TAGVAR(hardcode_direct, $1)=yes
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ ;;
+
+ # Unfortunately, older versions of FreeBSD 2 do not have this feature.
+ freebsd2*)
+ _LT_TAGVAR(archive_cmds, $1)='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags'
+ _LT_TAGVAR(hardcode_direct, $1)=yes
+ _LT_TAGVAR(hardcode_minus_L, $1)=yes
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ ;;
+
+ # FreeBSD 3 and greater uses gcc -shared to do shared libraries.
+ freebsd* | dragonfly*)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared -o $lib $libobjs $deplibs $compiler_flags'
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
+ _LT_TAGVAR(hardcode_direct, $1)=yes
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ ;;
+
+ hpux9*)
+ if test "$GCC" = yes; then
+ _LT_TAGVAR(archive_cmds, $1)='$RM $output_objdir/$soname~$CC -shared -fPIC ${wl}+b ${wl}$install_libdir -o $output_objdir/$soname $libobjs $deplibs $compiler_flags~test $output_objdir/$soname = $lib || mv $output_objdir/$soname $lib'
+ else
+ _LT_TAGVAR(archive_cmds, $1)='$RM $output_objdir/$soname~$LD -b +b $install_libdir -o $output_objdir/$soname $libobjs $deplibs $linker_flags~test $output_objdir/$soname = $lib || mv $output_objdir/$soname $lib'
+ fi
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}+b ${wl}$libdir'
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+ _LT_TAGVAR(hardcode_direct, $1)=yes
+
+ # hardcode_minus_L: Not really in the search PATH,
+ # but as the default location of the library.
+ _LT_TAGVAR(hardcode_minus_L, $1)=yes
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
+ ;;
+
+ hpux10*)
+ if test "$GCC" = yes -a "$with_gnu_ld" = no; then
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared -fPIC ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $libobjs $deplibs $compiler_flags'
+ else
+ _LT_TAGVAR(archive_cmds, $1)='$LD -b +h $soname +b $install_libdir -o $lib $libobjs $deplibs $linker_flags'
+ fi
+ if test "$with_gnu_ld" = no; then
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}+b ${wl}$libdir'
+ _LT_TAGVAR(hardcode_libdir_flag_spec_ld, $1)='+b $libdir'
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+ _LT_TAGVAR(hardcode_direct, $1)=yes
+ _LT_TAGVAR(hardcode_direct_absolute, $1)=yes
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
+ # hardcode_minus_L: Not really in the search PATH,
+ # but as the default location of the library.
+ _LT_TAGVAR(hardcode_minus_L, $1)=yes
+ fi
+ ;;
+
+ hpux11*)
+ if test "$GCC" = yes -a "$with_gnu_ld" = no; then
+ case $host_cpu in
+ hppa*64*)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared ${wl}+h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags'
+ ;;
+ ia64*)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared -fPIC ${wl}+h ${wl}$soname ${wl}+nodefaultrpath -o $lib $libobjs $deplibs $compiler_flags'
+ ;;
+ *)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared -fPIC ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $libobjs $deplibs $compiler_flags'
+ ;;
+ esac
+ else
+ case $host_cpu in
+ hppa*64*)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -b ${wl}+h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags'
+ ;;
+ ia64*)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -b ${wl}+h ${wl}$soname ${wl}+nodefaultrpath -o $lib $libobjs $deplibs $compiler_flags'
+ ;;
+ *)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -b ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $libobjs $deplibs $compiler_flags'
+ ;;
+ esac
+ fi
+ if test "$with_gnu_ld" = no; then
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}+b ${wl}$libdir'
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+
+ case $host_cpu in
+ hppa*64*|ia64*)
+ _LT_TAGVAR(hardcode_direct, $1)=no
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ ;;
+ *)
+ _LT_TAGVAR(hardcode_direct, $1)=yes
+ _LT_TAGVAR(hardcode_direct_absolute, $1)=yes
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
+
+ # hardcode_minus_L: Not really in the search PATH,
+ # but as the default location of the library.
+ _LT_TAGVAR(hardcode_minus_L, $1)=yes
+ ;;
+ esac
+ fi
+ ;;
+
+ irix5* | irix6* | nonstopux*)
+ if test "$GCC" = yes; then
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && $ECHO "X${wl}-set_version ${wl}$verstring" | $Xsed` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
+ # Try to use the -exported_symbol ld option, if it does not
+ # work, assume that -exports_file does not work either and
+ # implicitly export all symbols.
+ save_LDFLAGS="$LDFLAGS"
+ LDFLAGS="$LDFLAGS -shared ${wl}-exported_symbol ${wl}foo ${wl}-update_registry ${wl}/dev/null"
+ AC_LINK_IFELSE(int foo(void) {},
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && $ECHO "X${wl}-set_version ${wl}$verstring" | $Xsed` ${wl}-update_registry ${wl}${output_objdir}/so_locations ${wl}-exports_file ${wl}$export_symbols -o $lib'
+ )
+ LDFLAGS="$save_LDFLAGS"
+ else
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags -soname $soname `test -n "$verstring" && $ECHO "X-set_version $verstring" | $Xsed` -update_registry ${output_objdir}/so_locations -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags -soname $soname `test -n "$verstring" && $ECHO "X-set_version $verstring" | $Xsed` -update_registry ${output_objdir}/so_locations -exports_file $export_symbols -o $lib'
+ fi
+ _LT_TAGVAR(archive_cmds_need_lc, $1)='no'
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+ _LT_TAGVAR(inherit_rpath, $1)=yes
+ _LT_TAGVAR(link_all_deplibs, $1)=yes
+ ;;
+
+ netbsd*)
+ if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then
+ _LT_TAGVAR(archive_cmds, $1)='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags' # a.out
+ else
+ _LT_TAGVAR(archive_cmds, $1)='$LD -shared -o $lib $libobjs $deplibs $linker_flags' # ELF
+ fi
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
+ _LT_TAGVAR(hardcode_direct, $1)=yes
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ ;;
+
+ newsos6)
+ _LT_TAGVAR(archive_cmds, $1)='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+ _LT_TAGVAR(hardcode_direct, $1)=yes
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ ;;
+
+ *nto* | *qnx*)
+ ;;
+
+ openbsd*)
+ if test -f /usr/libexec/ld.so; then
+ _LT_TAGVAR(hardcode_direct, $1)=yes
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ _LT_TAGVAR(hardcode_direct_absolute, $1)=yes
+ if test -z "`echo __ELF__ | $CC -E - | $GREP __ELF__`" || test "$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags ${wl}-retain-symbols-file,$export_symbols'
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
+ else
+ case $host_os in
+ openbsd[[01]].* | openbsd2.[[0-7]] | openbsd2.[[0-7]].*)
+ _LT_TAGVAR(archive_cmds, $1)='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags'
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
+ ;;
+ *)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags'
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
+ ;;
+ esac
+ fi
+ else
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ fi
+ ;;
+
+ os2*)
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+ _LT_TAGVAR(hardcode_minus_L, $1)=yes
+ _LT_TAGVAR(allow_undefined_flag, $1)=unsupported
+ _LT_TAGVAR(archive_cmds, $1)='$ECHO "LIBRARY $libname INITINSTANCE" > $output_objdir/$libname.def~$ECHO "DESCRIPTION \"$libname\"" >> $output_objdir/$libname.def~$ECHO DATA >> $output_objdir/$libname.def~$ECHO " SINGLE NONSHARED" >> $output_objdir/$libname.def~$ECHO EXPORTS >> $output_objdir/$libname.def~emxexp $libobjs >> $output_objdir/$libname.def~$CC -Zdll -Zcrtdll -o $lib $libobjs $deplibs $compiler_flags $output_objdir/$libname.def'
+ _LT_TAGVAR(old_archive_from_new_cmds, $1)='emximp -o $output_objdir/$libname.a $output_objdir/$libname.def'
+ ;;
+
+ osf3*)
+ if test "$GCC" = yes; then
+ _LT_TAGVAR(allow_undefined_flag, $1)=' ${wl}-expect_unresolved ${wl}\*'
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared${allow_undefined_flag} $libobjs $deplibs $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && $ECHO "X${wl}-set_version ${wl}$verstring" | $Xsed` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
+ else
+ _LT_TAGVAR(allow_undefined_flag, $1)=' -expect_unresolved \*'
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared${allow_undefined_flag} $libobjs $deplibs $compiler_flags -soname $soname `test -n "$verstring" && $ECHO "X-set_version $verstring" | $Xsed` -update_registry ${output_objdir}/so_locations -o $lib'
+ fi
+ _LT_TAGVAR(archive_cmds_need_lc, $1)='no'
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+ ;;
+
+ osf4* | osf5*) # as osf3* with the addition of -msym flag
+ if test "$GCC" = yes; then
+ _LT_TAGVAR(allow_undefined_flag, $1)=' ${wl}-expect_unresolved ${wl}\*'
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared${allow_undefined_flag} $libobjs $deplibs $compiler_flags ${wl}-msym ${wl}-soname ${wl}$soname `test -n "$verstring" && $ECHO "X${wl}-set_version ${wl}$verstring" | $Xsed` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+ else
+ _LT_TAGVAR(allow_undefined_flag, $1)=' -expect_unresolved \*'
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared${allow_undefined_flag} $libobjs $deplibs $compiler_flags -msym -soname $soname `test -n "$verstring" && $ECHO "X-set_version $verstring" | $Xsed` -update_registry ${output_objdir}/so_locations -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='for i in `cat $export_symbols`; do printf "%s %s\\n" -exported_symbol "\$i" >> $lib.exp; done; printf "%s\\n" "-hidden">> $lib.exp~
+ $CC -shared${allow_undefined_flag} ${wl}-input ${wl}$lib.exp $compiler_flags $libobjs $deplibs -soname $soname `test -n "$verstring" && $ECHO "X-set_version $verstring" | $Xsed` -update_registry ${output_objdir}/so_locations -o $lib~$RM $lib.exp'
+
+ # Both c and cxx compiler support -rpath directly
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-rpath $libdir'
+ fi
+ _LT_TAGVAR(archive_cmds_need_lc, $1)='no'
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+ ;;
+
+ solaris*)
+ _LT_TAGVAR(no_undefined_flag, $1)=' -z defs'
+ if test "$GCC" = yes; then
+ wlarc='${wl}'
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared ${wl}-z ${wl}text ${wl}-h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
+ $CC -shared ${wl}-z ${wl}text ${wl}-M ${wl}$lib.exp ${wl}-h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags~$RM $lib.exp'
+ else
+ case `$CC -V 2>&1` in
+ *"Compilers 5.0"*)
+ wlarc=''
+ _LT_TAGVAR(archive_cmds, $1)='$LD -G${allow_undefined_flag} -h $soname -o $lib $libobjs $deplibs $linker_flags'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
+ $LD -G${allow_undefined_flag} -M $lib.exp -h $soname -o $lib $libobjs $deplibs $linker_flags~$RM $lib.exp'
+ ;;
+ *)
+ wlarc='${wl}'
+ _LT_TAGVAR(archive_cmds, $1)='$CC -G${allow_undefined_flag} -h $soname -o $lib $libobjs $deplibs $compiler_flags'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
+ $CC -G${allow_undefined_flag} -M $lib.exp -h $soname -o $lib $libobjs $deplibs $compiler_flags~$RM $lib.exp'
+ ;;
+ esac
+ fi
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ case $host_os in
+ solaris2.[[0-5]] | solaris2.[[0-5]].*) ;;
+ *)
+ # The compiler driver will combine and reorder linker options,
+ # but understands `-z linker_flag'. GCC discards it without `$wl',
+ # but is careful enough not to reorder.
+ # Supported since Solaris 2.6 (maybe 2.5.1?)
+ if test "$GCC" = yes; then
+ _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}-z ${wl}allextract$convenience ${wl}-z ${wl}defaultextract'
+ else
+ _LT_TAGVAR(whole_archive_flag_spec, $1)='-z allextract$convenience -z defaultextract'
+ fi
+ ;;
+ esac
+ _LT_TAGVAR(link_all_deplibs, $1)=yes
+ ;;
+
+ sunos4*)
+ if test "x$host_vendor" = xsequent; then
+ # Use $CC to link under sequent, because it throws in some extra .o
+ # files that make .init and .fini sections work.
+ _LT_TAGVAR(archive_cmds, $1)='$CC -G ${wl}-h $soname -o $lib $libobjs $deplibs $compiler_flags'
+ else
+ _LT_TAGVAR(archive_cmds, $1)='$LD -assert pure-text -Bstatic -o $lib $libobjs $deplibs $linker_flags'
+ fi
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+ _LT_TAGVAR(hardcode_direct, $1)=yes
+ _LT_TAGVAR(hardcode_minus_L, $1)=yes
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ ;;
+
+ sysv4)
+ case $host_vendor in
+ sni)
+ _LT_TAGVAR(archive_cmds, $1)='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+ _LT_TAGVAR(hardcode_direct, $1)=yes # is this really true???
+ ;;
+ siemens)
+ ## LD is ld it makes a PLAMLIB
+ ## CC just makes a GrossModule.
+ _LT_TAGVAR(archive_cmds, $1)='$LD -G -o $lib $libobjs $deplibs $linker_flags'
+ _LT_TAGVAR(reload_cmds, $1)='$CC -r -o $output$reload_objs'
+ _LT_TAGVAR(hardcode_direct, $1)=no
+ ;;
+ motorola)
+ _LT_TAGVAR(archive_cmds, $1)='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+ _LT_TAGVAR(hardcode_direct, $1)=no #Motorola manual says yes, but my tests say they lie
+ ;;
+ esac
+ runpath_var='LD_RUN_PATH'
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ ;;
+
+ sysv4.3*)
+ _LT_TAGVAR(archive_cmds, $1)='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='-Bexport'
+ ;;
+
+ sysv4*MP*)
+ if test -d /usr/nec; then
+ _LT_TAGVAR(archive_cmds, $1)='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ runpath_var=LD_RUN_PATH
+ hardcode_runpath_var=yes
+ _LT_TAGVAR(ld_shlibs, $1)=yes
+ fi
+ ;;
+
+ sysv4*uw2* | sysv5OpenUNIX* | sysv5UnixWare7.[[01]].[[10]]* | unixware7* | sco3.2v5.0.[[024]]*)
+ _LT_TAGVAR(no_undefined_flag, $1)='${wl}-z,text'
+ _LT_TAGVAR(archive_cmds_need_lc, $1)=no
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ runpath_var='LD_RUN_PATH'
+
+ if test "$GCC" = yes; then
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ else
+ _LT_TAGVAR(archive_cmds, $1)='$CC -G ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -G ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ fi
+ ;;
+
+ sysv5* | sco3.2v5* | sco5v6*)
+ # Note: We can NOT use -z defs as we might desire, because we do not
+ # link with -lc, and that would cause any symbols used from libc to
+ # always be unresolved, which means just about no library would
+ # ever link correctly. If we're not using GNU ld we use -z text
+ # though, which does catch some bad symbols but isn't as heavy-handed
+ # as -z defs.
+ _LT_TAGVAR(no_undefined_flag, $1)='${wl}-z,text'
+ _LT_TAGVAR(allow_undefined_flag, $1)='${wl}-z,nodefs'
+ _LT_TAGVAR(archive_cmds_need_lc, $1)=no
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-R,$libdir'
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=':'
+ _LT_TAGVAR(link_all_deplibs, $1)=yes
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-Bexport'
+ runpath_var='LD_RUN_PATH'
+
+ if test "$GCC" = yes; then
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ else
+ _LT_TAGVAR(archive_cmds, $1)='$CC -G ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -G ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ fi
+ ;;
+
+ uts4*)
+ _LT_TAGVAR(archive_cmds, $1)='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ ;;
+
+ *)
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+ esac
+
+ if test x$host_vendor = xsni; then
+ case $host in
+ sysv4 | sysv4.2uw2* | sysv4.3* | sysv5*)
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-Blargedynsym'
+ ;;
+ esac
+ fi
+ fi
+])
+AC_MSG_RESULT([$_LT_TAGVAR(ld_shlibs, $1)])
+test "$_LT_TAGVAR(ld_shlibs, $1)" = no && can_build_shared=no
+
+_LT_TAGVAR(with_gnu_ld, $1)=$with_gnu_ld
+
+_LT_DECL([], [libext], [0], [Old archive suffix (normally "a")])dnl
+_LT_DECL([], [shrext_cmds], [1], [Shared library suffix (normally ".so")])dnl
+_LT_DECL([], [extract_expsyms_cmds], [2],
+ [The commands to extract the exported symbol list from a shared archive])
+
+#
+# Do we need to explicitly link libc?
+#
+case "x$_LT_TAGVAR(archive_cmds_need_lc, $1)" in
+x|xyes)
+ # Assume -lc should be added
+ _LT_TAGVAR(archive_cmds_need_lc, $1)=yes
+
+ if test "$enable_shared" = yes && test "$GCC" = yes; then
+ case $_LT_TAGVAR(archive_cmds, $1) in
+ *'~'*)
+ # FIXME: we may have to deal with multi-command sequences.
+ ;;
+ '$CC '*)
+ # Test whether the compiler implicitly links with -lc since on some
+ # systems, -lgcc has to come before -lc. If gcc already passes -lc
+ # to ld, don't add -lc before -lgcc.
+ AC_MSG_CHECKING([whether -lc should be explicitly linked in])
+ $RM conftest*
+ echo "$lt_simple_compile_test_code" > conftest.$ac_ext
+
+ if AC_TRY_EVAL(ac_compile) 2>conftest.err; then
+ soname=conftest
+ lib=conftest
+ libobjs=conftest.$ac_objext
+ deplibs=
+ wl=$_LT_TAGVAR(lt_prog_compiler_wl, $1)
+ pic_flag=$_LT_TAGVAR(lt_prog_compiler_pic, $1)
+ compiler_flags=-v
+ linker_flags=-v
+ verstring=
+ output_objdir=.
+ libname=conftest
+ lt_save_allow_undefined_flag=$_LT_TAGVAR(allow_undefined_flag, $1)
+ _LT_TAGVAR(allow_undefined_flag, $1)=
+ if AC_TRY_EVAL(_LT_TAGVAR(archive_cmds, $1) 2\>\&1 \| $GREP \" -lc \" \>/dev/null 2\>\&1)
+ then
+ _LT_TAGVAR(archive_cmds_need_lc, $1)=no
+ else
+ _LT_TAGVAR(archive_cmds_need_lc, $1)=yes
+ fi
+ _LT_TAGVAR(allow_undefined_flag, $1)=$lt_save_allow_undefined_flag
+ else
+ cat conftest.err 1>&5
+ fi
+ $RM conftest*
+ AC_MSG_RESULT([$_LT_TAGVAR(archive_cmds_need_lc, $1)])
+ ;;
+ esac
+ fi
+ ;;
+esac
+
+_LT_TAGDECL([build_libtool_need_lc], [archive_cmds_need_lc], [0],
+ [Whether or not to add -lc for building shared libraries])
+_LT_TAGDECL([allow_libtool_libs_with_static_runtimes],
+ [enable_shared_with_static_runtimes], [0],
+ [Whether or not to disallow shared libs when runtime libs are static])
+_LT_TAGDECL([], [export_dynamic_flag_spec], [1],
+ [Compiler flag to allow reflexive dlopens])
+_LT_TAGDECL([], [whole_archive_flag_spec], [1],
+ [Compiler flag to generate shared objects directly from archives])
+_LT_TAGDECL([], [compiler_needs_object], [1],
+ [Whether the compiler copes with passing no objects directly])
+_LT_TAGDECL([], [old_archive_from_new_cmds], [2],
+ [Create an old-style archive from a shared archive])
+_LT_TAGDECL([], [old_archive_from_expsyms_cmds], [2],
+ [Create a temporary old-style archive to link instead of a shared archive])
+_LT_TAGDECL([], [archive_cmds], [2], [Commands used to build a shared archive])
+_LT_TAGDECL([], [archive_expsym_cmds], [2])
+_LT_TAGDECL([], [module_cmds], [2],
+ [Commands used to build a loadable module if different from building
+ a shared archive.])
+_LT_TAGDECL([], [module_expsym_cmds], [2])
+_LT_TAGDECL([], [with_gnu_ld], [1],
+ [Whether we are building with GNU ld or not])
+_LT_TAGDECL([], [allow_undefined_flag], [1],
+ [Flag that allows shared libraries with undefined symbols to be built])
+_LT_TAGDECL([], [no_undefined_flag], [1],
+ [Flag that enforces no undefined symbols])
+_LT_TAGDECL([], [hardcode_libdir_flag_spec], [1],
+ [Flag to hardcode $libdir into a binary during linking.
+ This must work even if $libdir does not exist])
+_LT_TAGDECL([], [hardcode_libdir_flag_spec_ld], [1],
+ [[If ld is used when linking, flag to hardcode $libdir into a binary
+ during linking. This must work even if $libdir does not exist]])
+_LT_TAGDECL([], [hardcode_libdir_separator], [1],
+ [Whether we need a single "-rpath" flag with a separated argument])
+_LT_TAGDECL([], [hardcode_direct], [0],
+ [Set to "yes" if using DIR/libNAME${shared_ext} during linking hardcodes
+ DIR into the resulting binary])
+_LT_TAGDECL([], [hardcode_direct_absolute], [0],
+ [Set to "yes" if using DIR/libNAME${shared_ext} during linking hardcodes
+ DIR into the resulting binary and the resulting library dependency is
+ "absolute", i.e impossible to change by setting ${shlibpath_var} if the
+ library is relocated])
+_LT_TAGDECL([], [hardcode_minus_L], [0],
+ [Set to "yes" if using the -LDIR flag during linking hardcodes DIR
+ into the resulting binary])
+_LT_TAGDECL([], [hardcode_shlibpath_var], [0],
+ [Set to "yes" if using SHLIBPATH_VAR=DIR during linking hardcodes DIR
+ into the resulting binary])
+_LT_TAGDECL([], [hardcode_automatic], [0],
+ [Set to "yes" if building a shared library automatically hardcodes DIR
+ into the library and all subsequent libraries and executables linked
+ against it])
+_LT_TAGDECL([], [inherit_rpath], [0],
+ [Set to yes if linker adds runtime paths of dependent libraries
+ to runtime path list])
+_LT_TAGDECL([], [link_all_deplibs], [0],
+ [Whether libtool must link a program against all its dependency libraries])
+_LT_TAGDECL([], [fix_srcfile_path], [1],
+ [Fix the shell variable $srcfile for the compiler])
+_LT_TAGDECL([], [always_export_symbols], [0],
+ [Set to "yes" if exported symbols are required])
+_LT_TAGDECL([], [export_symbols_cmds], [2],
+ [The commands to list exported symbols])
+_LT_TAGDECL([], [exclude_expsyms], [1],
+ [Symbols that should not be listed in the preloaded symbols])
+_LT_TAGDECL([], [include_expsyms], [1],
+ [Symbols that must always be exported])
+_LT_TAGDECL([], [prelink_cmds], [2],
+ [Commands necessary for linking programs (against libraries) with templates])
+_LT_TAGDECL([], [file_list_spec], [1],
+ [Specify filename containing input files])
+dnl FIXME: Not yet implemented
+dnl _LT_TAGDECL([], [thread_safe_flag_spec], [1],
+dnl [Compiler flag to generate thread safe objects])
+])# _LT_LINKER_SHLIBS
+
+
+# _LT_LANG_C_CONFIG([TAG])
+# ------------------------
+# Ensure that the configuration variables for a C compiler are suitably
+# defined. These variables are subsequently used by _LT_CONFIG to write
+# the compiler configuration to `libtool'.
+m4_defun([_LT_LANG_C_CONFIG],
+[m4_require([_LT_DECL_EGREP])dnl
+lt_save_CC="$CC"
+AC_LANG_PUSH(C)
+
+# Source file extension for C test sources.
+ac_ext=c
+
+# Object file extension for compiled C test sources.
+objext=o
+_LT_TAGVAR(objext, $1)=$objext
+
+# Code to be used in simple compile tests
+lt_simple_compile_test_code="int some_variable = 0;"
+
+# Code to be used in simple link tests
+lt_simple_link_test_code='int main(){return(0);}'
+
+_LT_TAG_COMPILER
+# Save the default compiler, since it gets overwritten when the other
+# tags are being tested, and _LT_TAGVAR(compiler, []) is a NOP.
+compiler_DEFAULT=$CC
+
+# save warnings/boilerplate of simple test code
+_LT_COMPILER_BOILERPLATE
+_LT_LINKER_BOILERPLATE
+
+if test -n "$compiler"; then
+ _LT_COMPILER_NO_RTTI($1)
+ _LT_COMPILER_PIC($1)
+ _LT_COMPILER_C_O($1)
+ _LT_COMPILER_FILE_LOCKS($1)
+ _LT_LINKER_SHLIBS($1)
+ _LT_SYS_DYNAMIC_LINKER($1)
+ _LT_LINKER_HARDCODE_LIBPATH($1)
+ LT_SYS_DLOPEN_SELF
+ _LT_CMD_STRIPLIB
+
+ # Report which library types will actually be built
+ AC_MSG_CHECKING([if libtool supports shared libraries])
+ AC_MSG_RESULT([$can_build_shared])
+
+ AC_MSG_CHECKING([whether to build shared libraries])
+ test "$can_build_shared" = "no" && enable_shared=no
+
+ # On AIX, shared libraries and static libraries use the same namespace, and
+ # are all built from PIC.
+ case $host_os in
+ aix3*)
+ test "$enable_shared" = yes && enable_static=no
+ if test -n "$RANLIB"; then
+ archive_cmds="$archive_cmds~\$RANLIB \$lib"
+ postinstall_cmds='$RANLIB $lib'
+ fi
+ ;;
+
+ aix[[4-9]]*)
+ if test "$host_cpu" != ia64 && test "$aix_use_runtimelinking" = no ; then
+ test "$enable_shared" = yes && enable_static=no
+ fi
+ ;;
+ esac
+ AC_MSG_RESULT([$enable_shared])
+
+ AC_MSG_CHECKING([whether to build static libraries])
+ # Make sure either enable_shared or enable_static is yes.
+ test "$enable_shared" = yes || enable_static=yes
+ AC_MSG_RESULT([$enable_static])
+
+ _LT_CONFIG($1)
+fi
+AC_LANG_POP
+CC="$lt_save_CC"
+])# _LT_LANG_C_CONFIG
+
+
+# _LT_PROG_CXX
+# ------------
+# Since AC_PROG_CXX is broken, in that it returns g++ if there is no c++
+# compiler, we have our own version here.
+m4_defun([_LT_PROG_CXX],
+[
+pushdef([AC_MSG_ERROR], [_lt_caught_CXX_error=yes])
+AC_PROG_CXX
+if test -n "$CXX" && ( test "X$CXX" != "Xno" &&
+ ( (test "X$CXX" = "Xg++" && `g++ -v >/dev/null 2>&1` ) ||
+ (test "X$CXX" != "Xg++"))) ; then
+ AC_PROG_CXXCPP
+else
+ _lt_caught_CXX_error=yes
+fi
+popdef([AC_MSG_ERROR])
+])# _LT_PROG_CXX
+
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([_LT_PROG_CXX], [])
+
+
+# _LT_LANG_CXX_CONFIG([TAG])
+# --------------------------
+# Ensure that the configuration variables for a C++ compiler are suitably
+# defined. These variables are subsequently used by _LT_CONFIG to write
+# the compiler configuration to `libtool'.
+m4_defun([_LT_LANG_CXX_CONFIG],
+[AC_REQUIRE([_LT_PROG_CXX])dnl
+m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+m4_require([_LT_DECL_EGREP])dnl
+
+AC_LANG_PUSH(C++)
+_LT_TAGVAR(archive_cmds_need_lc, $1)=no
+_LT_TAGVAR(allow_undefined_flag, $1)=
+_LT_TAGVAR(always_export_symbols, $1)=no
+_LT_TAGVAR(archive_expsym_cmds, $1)=
+_LT_TAGVAR(compiler_needs_object, $1)=no
+_LT_TAGVAR(export_dynamic_flag_spec, $1)=
+_LT_TAGVAR(hardcode_direct, $1)=no
+_LT_TAGVAR(hardcode_direct_absolute, $1)=no
+_LT_TAGVAR(hardcode_libdir_flag_spec, $1)=
+_LT_TAGVAR(hardcode_libdir_flag_spec_ld, $1)=
+_LT_TAGVAR(hardcode_libdir_separator, $1)=
+_LT_TAGVAR(hardcode_minus_L, $1)=no
+_LT_TAGVAR(hardcode_shlibpath_var, $1)=unsupported
+_LT_TAGVAR(hardcode_automatic, $1)=no
+_LT_TAGVAR(inherit_rpath, $1)=no
+_LT_TAGVAR(module_cmds, $1)=
+_LT_TAGVAR(module_expsym_cmds, $1)=
+_LT_TAGVAR(link_all_deplibs, $1)=unknown
+_LT_TAGVAR(old_archive_cmds, $1)=$old_archive_cmds
+_LT_TAGVAR(no_undefined_flag, $1)=
+_LT_TAGVAR(whole_archive_flag_spec, $1)=
+_LT_TAGVAR(enable_shared_with_static_runtimes, $1)=no
+
+# Source file extension for C++ test sources.
+ac_ext=cpp
+
+# Object file extension for compiled C++ test sources.
+objext=o
+_LT_TAGVAR(objext, $1)=$objext
+
+# No sense in running all these tests if we already determined that
+# the CXX compiler isn't working. Some variables (like enable_shared)
+# are currently assumed to apply to all compilers on this platform,
+# and will be corrupted by setting them based on a non-working compiler.
+if test "$_lt_caught_CXX_error" != yes; then
+ # Code to be used in simple compile tests
+ lt_simple_compile_test_code="int some_variable = 0;"
+
+ # Code to be used in simple link tests
+ lt_simple_link_test_code='int main(int, char *[[]]) { return(0); }'
+
+ # ltmain only uses $CC for tagged configurations so make sure $CC is set.
+ _LT_TAG_COMPILER
+
+ # save warnings/boilerplate of simple test code
+ _LT_COMPILER_BOILERPLATE
+ _LT_LINKER_BOILERPLATE
+
+ # Allow CC to be a program name with arguments.
+ lt_save_CC=$CC
+ lt_save_LD=$LD
+ lt_save_GCC=$GCC
+ GCC=$GXX
+ lt_save_with_gnu_ld=$with_gnu_ld
+ lt_save_path_LD=$lt_cv_path_LD
+ if test -n "${lt_cv_prog_gnu_ldcxx+set}"; then
+ lt_cv_prog_gnu_ld=$lt_cv_prog_gnu_ldcxx
+ else
+ $as_unset lt_cv_prog_gnu_ld
+ fi
+ if test -n "${lt_cv_path_LDCXX+set}"; then
+ lt_cv_path_LD=$lt_cv_path_LDCXX
+ else
+ $as_unset lt_cv_path_LD
+ fi
+ test -z "${LDCXX+set}" || LD=$LDCXX
+ CC=${CXX-"c++"}
+ compiler=$CC
+ _LT_TAGVAR(compiler, $1)=$CC
+ _LT_CC_BASENAME([$compiler])
+
+ if test -n "$compiler"; then
+ # We don't want -fno-exception when compiling C++ code, so set the
+ # no_builtin_flag separately
+ if test "$GXX" = yes; then
+ _LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)=' -fno-builtin'
+ else
+ _LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)=
+ fi
+
+ if test "$GXX" = yes; then
+ # Set up default GNU C++ configuration
+
+ LT_PATH_LD
+
+ # Check if GNU C++ uses GNU ld as the underlying linker, since the
+ # archiving commands below assume that GNU ld is being used.
+ if test "$with_gnu_ld" = yes; then
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}--export-dynamic'
+
+ # If archive_cmds runs LD, not CC, wlarc should be empty
+ # XXX I think wlarc can be eliminated in ltcf-cxx, but I need to
+ # investigate it a little bit more. (MM)
+ wlarc='${wl}'
+
+ # ancient GNU ld didn't support --whole-archive et. al.
+ if eval "`$CC -print-prog-name=ld` --help 2>&1" |
+ $GREP 'no-whole-archive' > /dev/null; then
+ _LT_TAGVAR(whole_archive_flag_spec, $1)="$wlarc"'--whole-archive$convenience '"$wlarc"'--no-whole-archive'
+ else
+ _LT_TAGVAR(whole_archive_flag_spec, $1)=
+ fi
+ else
+ with_gnu_ld=no
+ wlarc=
+
+ # A generic and very simple default shared library creation
+ # command for GNU C++ for the case where it uses the native
+ # linker, instead of GNU ld. If possible, this setting should
+ # overridden to take advantage of the native linker features on
+ # the platform it is being used on.
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -o $lib'
+ fi
+
+ # Commands to make compiler produce verbose output that lists
+ # what "hidden" libraries, object files and flags are used when
+ # linking a shared library.
+ output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP "\-L"'
+
+ else
+ GXX=no
+ with_gnu_ld=no
+ wlarc=
+ fi
+
+ # PORTME: fill in a description of your system's C++ link characteristics
+ AC_MSG_CHECKING([whether the $compiler linker ($LD) supports shared libraries])
+ _LT_TAGVAR(ld_shlibs, $1)=yes
+ case $host_os in
+ aix3*)
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+ aix[[4-9]]*)
+ if test "$host_cpu" = ia64; then
+ # On IA64, the linker does run time linking by default, so we don't
+ # have to do anything special.
+ aix_use_runtimelinking=no
+ exp_sym_flag='-Bexport'
+ no_entry_flag=""
+ else
+ aix_use_runtimelinking=no
+
+ # Test if we are trying to use run time linking or normal
+ # AIX style linking. If -brtl is somewhere in LDFLAGS, we
+ # need to do runtime linking.
+ case $host_os in aix4.[[23]]|aix4.[[23]].*|aix[[5-9]]*)
+ for ld_flag in $LDFLAGS; do
+ case $ld_flag in
+ *-brtl*)
+ aix_use_runtimelinking=yes
+ break
+ ;;
+ esac
+ done
+ ;;
+ esac
+
+ exp_sym_flag='-bexport'
+ no_entry_flag='-bnoentry'
+ fi
+
+ # When large executables or shared objects are built, AIX ld can
+ # have problems creating the table of contents. If linking a library
+ # or program results in "error TOC overflow" add -mminimal-toc to
+ # CXXFLAGS/CFLAGS for g++/gcc. In the cases where that is not
+ # enough to fix the problem, add -Wl,-bbigtoc to LDFLAGS.
+
+ _LT_TAGVAR(archive_cmds, $1)=''
+ _LT_TAGVAR(hardcode_direct, $1)=yes
+ _LT_TAGVAR(hardcode_direct_absolute, $1)=yes
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=':'
+ _LT_TAGVAR(link_all_deplibs, $1)=yes
+ _LT_TAGVAR(file_list_spec, $1)='${wl}-f,'
+
+ if test "$GXX" = yes; then
+ case $host_os in aix4.[[012]]|aix4.[[012]].*)
+ # We only want to do this on AIX 4.2 and lower, the check
+ # below for broken collect2 doesn't work under 4.3+
+ collect2name=`${CC} -print-prog-name=collect2`
+ if test -f "$collect2name" &&
+ strings "$collect2name" | $GREP resolve_lib_name >/dev/null
+ then
+ # We have reworked collect2
+ :
+ else
+ # We have old collect2
+ _LT_TAGVAR(hardcode_direct, $1)=unsupported
+ # It fails to find uninstalled libraries when the uninstalled
+ # path is not listed in the libpath. Setting hardcode_minus_L
+ # to unsupported forces relinking
+ _LT_TAGVAR(hardcode_minus_L, $1)=yes
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=
+ fi
+ esac
+ shared_flag='-shared'
+ if test "$aix_use_runtimelinking" = yes; then
+ shared_flag="$shared_flag "'${wl}-G'
+ fi
+ else
+ # not using gcc
+ if test "$host_cpu" = ia64; then
+ # VisualAge C++, Version 5.5 for AIX 5L for IA-64, Beta 3 Release
+ # chokes on -Wl,-G. The following line is correct:
+ shared_flag='-G'
+ else
+ if test "$aix_use_runtimelinking" = yes; then
+ shared_flag='${wl}-G'
+ else
+ shared_flag='${wl}-bM:SRE'
+ fi
+ fi
+ fi
+
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-bexpall'
+ # It seems that -bexpall does not export symbols beginning with
+ # underscore (_), so it is better to generate a list of symbols to
+ # export.
+ _LT_TAGVAR(always_export_symbols, $1)=yes
+ if test "$aix_use_runtimelinking" = yes; then
+ # Warning - without using the other runtime loading flags (-brtl),
+ # -berok will link without error, but may produce a broken library.
+ _LT_TAGVAR(allow_undefined_flag, $1)='-berok'
+ # Determine the default libpath from the value encoded in an empty
+ # executable.
+ _LT_SYS_MODULE_PATH_AIX
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-blibpath:$libdir:'"$aix_libpath"
+
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -o $output_objdir/$soname $libobjs $deplibs '"\${wl}$no_entry_flag"' $compiler_flags `if test "x${allow_undefined_flag}" != "x"; then $ECHO "X${wl}${allow_undefined_flag}" | $Xsed; else :; fi` '"\${wl}$exp_sym_flag:\$export_symbols $shared_flag"
+ else
+ if test "$host_cpu" = ia64; then
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-R $libdir:/usr/lib:/lib'
+ _LT_TAGVAR(allow_undefined_flag, $1)="-z nodefs"
+ _LT_TAGVAR(archive_expsym_cmds, $1)="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs '"\${wl}$no_entry_flag"' $compiler_flags ${wl}${allow_undefined_flag} '"\${wl}$exp_sym_flag:\$export_symbols"
+ else
+ # Determine the default libpath from the value encoded in an
+ # empty executable.
+ _LT_SYS_MODULE_PATH_AIX
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-blibpath:$libdir:'"$aix_libpath"
+ # Warning - without using the other run time loading flags,
+ # -berok will link without error, but may produce a broken library.
+ _LT_TAGVAR(no_undefined_flag, $1)=' ${wl}-bernotok'
+ _LT_TAGVAR(allow_undefined_flag, $1)=' ${wl}-berok'
+ # Exported symbols can be pulled into shared objects from archives
+ _LT_TAGVAR(whole_archive_flag_spec, $1)='$convenience'
+ _LT_TAGVAR(archive_cmds_need_lc, $1)=yes
+ # This is similar to how AIX traditionally builds its shared
+ # libraries.
+ _LT_TAGVAR(archive_expsym_cmds, $1)="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs ${wl}-bnoentry $compiler_flags ${wl}-bE:$export_symbols${allow_undefined_flag}~$AR $AR_FLAGS $output_objdir/$libname$release.a $output_objdir/$soname'
+ fi
+ fi
+ ;;
+
+ beos*)
+ if $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
+ _LT_TAGVAR(allow_undefined_flag, $1)=unsupported
+ # Joseph Beckenbach <jrb3@best.com> says some releases of gcc
+ # support --undefined. This deserves some investigation. FIXME
+ _LT_TAGVAR(archive_cmds, $1)='$CC -nostart $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ else
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ fi
+ ;;
+
+ chorus*)
+ case $cc_basename in
+ *)
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+ esac
+ ;;
+
+ cygwin* | mingw* | pw32* | cegcc*)
+ # _LT_TAGVAR(hardcode_libdir_flag_spec, $1) is actually meaningless,
+ # as there is no search path for DLLs.
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+ _LT_TAGVAR(allow_undefined_flag, $1)=unsupported
+ _LT_TAGVAR(always_export_symbols, $1)=no
+ _LT_TAGVAR(enable_shared_with_static_runtimes, $1)=yes
+
+ if $LD --help 2>&1 | $GREP 'auto-import' > /dev/null; then
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -o $output_objdir/$soname ${wl}--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib'
+ # If the export-symbols file already is a .def file (1st line
+ # is EXPORTS), use it as is; otherwise, prepend...
+ _LT_TAGVAR(archive_expsym_cmds, $1)='if test "x`$SED 1q $export_symbols`" = xEXPORTS; then
+ cp $export_symbols $output_objdir/$soname.def;
+ else
+ echo EXPORTS > $output_objdir/$soname.def;
+ cat $export_symbols >> $output_objdir/$soname.def;
+ fi~
+ $CC -shared -nostdlib $output_objdir/$soname.def $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -o $output_objdir/$soname ${wl}--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib'
+ else
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ fi
+ ;;
+ darwin* | rhapsody*)
+ _LT_DARWIN_LINKER_FEATURES($1)
+ ;;
+
+ dgux*)
+ case $cc_basename in
+ ec++*)
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+ ghcx*)
+ # Green Hills C++ Compiler
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+ *)
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+ esac
+ ;;
+
+ freebsd[[12]]*)
+ # C++ shared libraries reported to be fairly broken before
+ # switch to ELF
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+
+ freebsd-elf*)
+ _LT_TAGVAR(archive_cmds_need_lc, $1)=no
+ ;;
+
+ freebsd* | dragonfly*)
+ # FreeBSD 3 and later use GNU C++ and GNU ld with standard ELF
+ # conventions
+ _LT_TAGVAR(ld_shlibs, $1)=yes
+ ;;
+
+ gnu*)
+ ;;
+
+ hpux9*)
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}+b ${wl}$libdir'
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
+ _LT_TAGVAR(hardcode_direct, $1)=yes
+ _LT_TAGVAR(hardcode_minus_L, $1)=yes # Not in the search PATH,
+ # but as the default
+ # location of the library.
+
+ case $cc_basename in
+ CC*)
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+ aCC*)
+ _LT_TAGVAR(archive_cmds, $1)='$RM $output_objdir/$soname~$CC -b ${wl}+b ${wl}$install_libdir -o $output_objdir/$soname $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~test $output_objdir/$soname = $lib || mv $output_objdir/$soname $lib'
+ # Commands to make compiler produce verbose output that lists
+ # what "hidden" libraries, object files and flags are used when
+ # linking a shared library.
+ #
+ # There doesn't appear to be a way to prevent this compiler from
+ # explicitly linking system object files so we need to strip them
+ # from the output so that they don't get included in the library
+ # dependencies.
+ output_verbose_link_cmd='templist=`($CC -b $CFLAGS -v conftest.$objext 2>&1) | $EGREP "\-L"`; list=""; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; $ECHO "X$list" | $Xsed'
+ ;;
+ *)
+ if test "$GXX" = yes; then
+ _LT_TAGVAR(archive_cmds, $1)='$RM $output_objdir/$soname~$CC -shared -nostdlib -fPIC ${wl}+b ${wl}$install_libdir -o $output_objdir/$soname $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~test $output_objdir/$soname = $lib || mv $output_objdir/$soname $lib'
+ else
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ fi
+ ;;
+ esac
+ ;;
+
+ hpux10*|hpux11*)
+ if test $with_gnu_ld = no; then
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}+b ${wl}$libdir'
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+
+ case $host_cpu in
+ hppa*64*|ia64*)
+ ;;
+ *)
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
+ ;;
+ esac
+ fi
+ case $host_cpu in
+ hppa*64*|ia64*)
+ _LT_TAGVAR(hardcode_direct, $1)=no
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ ;;
+ *)
+ _LT_TAGVAR(hardcode_direct, $1)=yes
+ _LT_TAGVAR(hardcode_direct_absolute, $1)=yes
+ _LT_TAGVAR(hardcode_minus_L, $1)=yes # Not in the search PATH,
+ # but as the default
+ # location of the library.
+ ;;
+ esac
+
+ case $cc_basename in
+ CC*)
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+ aCC*)
+ case $host_cpu in
+ hppa*64*)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -b ${wl}+h ${wl}$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
+ ;;
+ ia64*)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -b ${wl}+h ${wl}$soname ${wl}+nodefaultrpath -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
+ ;;
+ *)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -b ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
+ ;;
+ esac
+ # Commands to make compiler produce verbose output that lists
+ # what "hidden" libraries, object files and flags are used when
+ # linking a shared library.
+ #
+ # There doesn't appear to be a way to prevent this compiler from
+ # explicitly linking system object files so we need to strip them
+ # from the output so that they don't get included in the library
+ # dependencies.
+ output_verbose_link_cmd='templist=`($CC -b $CFLAGS -v conftest.$objext 2>&1) | $GREP "\-L"`; list=""; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; $ECHO "X$list" | $Xsed'
+ ;;
+ *)
+ if test "$GXX" = yes; then
+ if test $with_gnu_ld = no; then
+ case $host_cpu in
+ hppa*64*)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib -fPIC ${wl}+h ${wl}$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
+ ;;
+ ia64*)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib -fPIC ${wl}+h ${wl}$soname ${wl}+nodefaultrpath -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
+ ;;
+ *)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib -fPIC ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
+ ;;
+ esac
+ fi
+ else
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ fi
+ ;;
+ esac
+ ;;
+
+ interix[[3-9]]*)
+ _LT_TAGVAR(hardcode_direct, $1)=no
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
+ # Hack: On Interix 3.x, we cannot compile PIC because of a broken gcc.
+ # Instead, shared libraries are loaded at an image base (0x10000000 by
+ # default) and relocated if they conflict, which is a slow very memory
+ # consuming and fragmenting process. To avoid this, we pick a random,
+ # 256 KiB-aligned image base between 0x50000000 and 0x6FFC0000 at link
+ # time. Moving up from 0x10000000 also allows more sbrk(2) space.
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-h,$soname ${wl}--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='sed "s,^,_," $export_symbols >$output_objdir/$soname.expsym~$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-h,$soname ${wl}--retain-symbols-file,$output_objdir/$soname.expsym ${wl}--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
+ ;;
+ irix5* | irix6*)
+ case $cc_basename in
+ CC*)
+ # SGI C++
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared -all -multigot $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -soname $soname `test -n "$verstring" && $ECHO "X-set_version $verstring" | $Xsed` -update_registry ${output_objdir}/so_locations -o $lib'
+
+ # Archives containing C++ object files must be created using
+ # "CC -ar", where "CC" is the IRIX C++ compiler. This is
+ # necessary to make sure instantiated templates are included
+ # in the archive.
+ _LT_TAGVAR(old_archive_cmds, $1)='$CC -ar -WR,-u -o $oldlib $oldobjs'
+ ;;
+ *)
+ if test "$GXX" = yes; then
+ if test "$with_gnu_ld" = no; then
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && $ECHO "X${wl}-set_version ${wl}$verstring" | $Xsed` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
+ else
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && $ECHO "X${wl}-set_version ${wl}$verstring" | $Xsed` -o $lib'
+ fi
+ fi
+ _LT_TAGVAR(link_all_deplibs, $1)=yes
+ ;;
+ esac
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+ _LT_TAGVAR(inherit_rpath, $1)=yes
+ ;;
+
+ linux* | k*bsd*-gnu)
+ case $cc_basename in
+ KCC*)
+ # Kuck and Associates, Inc. (KAI) C++ Compiler
+
+ # KCC will only create a shared library if the output file
+ # ends with ".so" (or ".sl" for HP-UX), so rename the library
+ # to its proper name (with version) after linking.
+ _LT_TAGVAR(archive_cmds, $1)='tempext=`echo $shared_ext | $SED -e '\''s/\([[^()0-9A-Za-z{}]]\)/\\\\\1/g'\''`; templib=`echo $lib | $SED -e "s/\${tempext}\..*/.so/"`; $CC $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags --soname $soname -o \$templib; mv \$templib $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='tempext=`echo $shared_ext | $SED -e '\''s/\([[^()0-9A-Za-z{}]]\)/\\\\\1/g'\''`; templib=`echo $lib | $SED -e "s/\${tempext}\..*/.so/"`; $CC $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags --soname $soname -o \$templib ${wl}-retain-symbols-file,$export_symbols; mv \$templib $lib'
+ # Commands to make compiler produce verbose output that lists
+ # what "hidden" libraries, object files and flags are used when
+ # linking a shared library.
+ #
+ # There doesn't appear to be a way to prevent this compiler from
+ # explicitly linking system object files so we need to strip them
+ # from the output so that they don't get included in the library
+ # dependencies.
+ output_verbose_link_cmd='templist=`$CC $CFLAGS -v conftest.$objext -o libconftest$shared_ext 2>&1 | $GREP "ld"`; rm -f libconftest$shared_ext; list=""; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; $ECHO "X$list" | $Xsed'
+
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}--export-dynamic'
+
+ # Archives containing C++ object files must be created using
+ # "CC -Bstatic", where "CC" is the KAI C++ compiler.
+ _LT_TAGVAR(old_archive_cmds, $1)='$CC -Bstatic -o $oldlib $oldobjs'
+ ;;
+ icpc* | ecpc* )
+ # Intel C++
+ with_gnu_ld=yes
+ # version 8.0 and above of icpc choke on multiply defined symbols
+ # if we add $predep_objects and $postdep_objects, however 7.1 and
+ # earlier do not add the objects themselves.
+ case `$CC -V 2>&1` in
+ *"Version 7."*)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+ ;;
+ *) # Version 8.0 or newer
+ tmp_idyn=
+ case $host_cpu in
+ ia64*) tmp_idyn=' -i_dynamic';;
+ esac
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared'"$tmp_idyn"' $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared'"$tmp_idyn"' $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+ ;;
+ esac
+ _LT_TAGVAR(archive_cmds_need_lc, $1)=no
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}--export-dynamic'
+ _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}--whole-archive$convenience ${wl}--no-whole-archive'
+ ;;
+ pgCC* | pgcpp*)
+ # Portland Group C++ compiler
+ case `$CC -V` in
+ *pgCC\ [[1-5]]* | *pgcpp\ [[1-5]]*)
+ _LT_TAGVAR(prelink_cmds, $1)='tpldir=Template.dir~
+ rm -rf $tpldir~
+ $CC --prelink_objects --instantiation_dir $tpldir $objs $libobjs $compile_deplibs~
+ compile_command="$compile_command `find $tpldir -name \*.o | $NL2SP`"'
+ _LT_TAGVAR(old_archive_cmds, $1)='tpldir=Template.dir~
+ rm -rf $tpldir~
+ $CC --prelink_objects --instantiation_dir $tpldir $oldobjs$old_deplibs~
+ $AR $AR_FLAGS $oldlib$oldobjs$old_deplibs `find $tpldir -name \*.o | $NL2SP`~
+ $RANLIB $oldlib'
+ _LT_TAGVAR(archive_cmds, $1)='tpldir=Template.dir~
+ rm -rf $tpldir~
+ $CC --prelink_objects --instantiation_dir $tpldir $predep_objects $libobjs $deplibs $convenience $postdep_objects~
+ $CC -shared $pic_flag $predep_objects $libobjs $deplibs `find $tpldir -name \*.o | $NL2SP` $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='tpldir=Template.dir~
+ rm -rf $tpldir~
+ $CC --prelink_objects --instantiation_dir $tpldir $predep_objects $libobjs $deplibs $convenience $postdep_objects~
+ $CC -shared $pic_flag $predep_objects $libobjs $deplibs `find $tpldir -name \*.o | $NL2SP` $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname ${wl}-retain-symbols-file ${wl}$export_symbols -o $lib'
+ ;;
+ *) # Version 6 will use weak symbols
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $pic_flag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname ${wl}-retain-symbols-file ${wl}$export_symbols -o $lib'
+ ;;
+ esac
+
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}--rpath ${wl}$libdir'
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}--export-dynamic'
+ _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}--whole-archive`for conv in $convenience\"\"; do test -n \"$conv\" && new_convenience=\"$new_convenience,$conv\"; done; $ECHO \"$new_convenience\"` ${wl}--no-whole-archive'
+ ;;
+ cxx*)
+ # Compaq C++
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname -o $lib ${wl}-retain-symbols-file $wl$export_symbols'
+
+ runpath_var=LD_RUN_PATH
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-rpath $libdir'
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+
+ # Commands to make compiler produce verbose output that lists
+ # what "hidden" libraries, object files and flags are used when
+ # linking a shared library.
+ #
+ # There doesn't appear to be a way to prevent this compiler from
+ # explicitly linking system object files so we need to strip them
+ # from the output so that they don't get included in the library
+ # dependencies.
+ output_verbose_link_cmd='templist=`$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP "ld"`; templist=`$ECHO "X$templist" | $Xsed -e "s/\(^.*ld.*\)\( .*ld .*$\)/\1/"`; list=""; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; $ECHO "X$list" | $Xsed'
+ ;;
+ xl*)
+ # IBM XL 8.0 on PPC, with GNU ld
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}--export-dynamic'
+ _LT_TAGVAR(archive_cmds, $1)='$CC -qmkshrobj $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ if test "x$supports_anon_versioning" = xyes; then
+ _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $output_objdir/$libname.ver~
+ cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $output_objdir/$libname.ver~
+ echo "local: *; };" >> $output_objdir/$libname.ver~
+ $CC -qmkshrobj $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-version-script ${wl}$output_objdir/$libname.ver -o $lib'
+ fi
+ ;;
+ *)
+ case `$CC -V 2>&1 | sed 5q` in
+ *Sun\ C*)
+ # Sun C++ 5.9
+ _LT_TAGVAR(no_undefined_flag, $1)=' -zdefs'
+ _LT_TAGVAR(archive_cmds, $1)='$CC -G${allow_undefined_flag} -h$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -G${allow_undefined_flag} -h$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-retain-symbols-file ${wl}$export_symbols'
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
+ _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}--whole-archive`new_convenience=; for conv in $convenience\"\"; do test -z \"$conv\" || new_convenience=\"$new_convenience,$conv\"; done; $ECHO \"$new_convenience\"` ${wl}--no-whole-archive'
+ _LT_TAGVAR(compiler_needs_object, $1)=yes
+
+ # Not sure whether something based on
+ # $CC $CFLAGS -v conftest.$objext -o libconftest$shared_ext 2>&1
+ # would be better.
+ output_verbose_link_cmd='echo'
+
+ # Archives containing C++ object files must be created using
+ # "CC -xar", where "CC" is the Sun C++ compiler. This is
+ # necessary to make sure instantiated templates are included
+ # in the archive.
+ _LT_TAGVAR(old_archive_cmds, $1)='$CC -xar -o $oldlib $oldobjs'
+ ;;
+ esac
+ ;;
+ esac
+ ;;
+
+ lynxos*)
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+
+ m88k*)
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+
+ mvs*)
+ case $cc_basename in
+ cxx*)
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+ *)
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+ esac
+ ;;
+
+ netbsd*)
+ if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then
+ _LT_TAGVAR(archive_cmds, $1)='$LD -Bshareable -o $lib $predep_objects $libobjs $deplibs $postdep_objects $linker_flags'
+ wlarc=
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
+ _LT_TAGVAR(hardcode_direct, $1)=yes
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ fi
+ # Workaround some broken pre-1.5 toolchains
+ output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP conftest.$objext | $SED -e "s:-lgcc -lc -lgcc::"'
+ ;;
+
+ *nto* | *qnx*)
+ _LT_TAGVAR(ld_shlibs, $1)=yes
+ ;;
+
+ openbsd2*)
+ # C++ shared libraries are fairly broken
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+
+ openbsd*)
+ if test -f /usr/libexec/ld.so; then
+ _LT_TAGVAR(hardcode_direct, $1)=yes
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ _LT_TAGVAR(hardcode_direct_absolute, $1)=yes
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -o $lib'
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
+ if test -z "`echo __ELF__ | $CC -E - | grep __ELF__`" || test "$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $pic_flag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-retain-symbols-file,$export_symbols -o $lib'
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
+ _LT_TAGVAR(whole_archive_flag_spec, $1)="$wlarc"'--whole-archive$convenience '"$wlarc"'--no-whole-archive'
+ fi
+ output_verbose_link_cmd=echo
+ else
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ fi
+ ;;
+
+ osf3* | osf4* | osf5*)
+ case $cc_basename in
+ KCC*)
+ # Kuck and Associates, Inc. (KAI) C++ Compiler
+
+ # KCC will only create a shared library if the output file
+ # ends with ".so" (or ".sl" for HP-UX), so rename the library
+ # to its proper name (with version) after linking.
+ _LT_TAGVAR(archive_cmds, $1)='tempext=`echo $shared_ext | $SED -e '\''s/\([[^()0-9A-Za-z{}]]\)/\\\\\1/g'\''`; templib=`echo "$lib" | $SED -e "s/\${tempext}\..*/.so/"`; $CC $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags --soname $soname -o \$templib; mv \$templib $lib'
+
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+
+ # Archives containing C++ object files must be created using
+ # the KAI C++ compiler.
+ case $host in
+ osf3*) _LT_TAGVAR(old_archive_cmds, $1)='$CC -Bstatic -o $oldlib $oldobjs' ;;
+ *) _LT_TAGVAR(old_archive_cmds, $1)='$CC -o $oldlib $oldobjs' ;;
+ esac
+ ;;
+ RCC*)
+ # Rational C++ 2.4.1
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+ cxx*)
+ case $host in
+ osf3*)
+ _LT_TAGVAR(allow_undefined_flag, $1)=' ${wl}-expect_unresolved ${wl}\*'
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared${allow_undefined_flag} $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $soname `test -n "$verstring" && $ECHO "X${wl}-set_version $verstring" | $Xsed` -update_registry ${output_objdir}/so_locations -o $lib'
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+ ;;
+ *)
+ _LT_TAGVAR(allow_undefined_flag, $1)=' -expect_unresolved \*'
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared${allow_undefined_flag} $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -msym -soname $soname `test -n "$verstring" && $ECHO "X-set_version $verstring" | $Xsed` -update_registry ${output_objdir}/so_locations -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='for i in `cat $export_symbols`; do printf "%s %s\\n" -exported_symbol "\$i" >> $lib.exp; done~
+ echo "-hidden">> $lib.exp~
+ $CC -shared$allow_undefined_flag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -msym -soname $soname ${wl}-input ${wl}$lib.exp `test -n "$verstring" && $ECHO "X-set_version $verstring" | $Xsed` -update_registry ${output_objdir}/so_locations -o $lib~
+ $RM $lib.exp'
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-rpath $libdir'
+ ;;
+ esac
+
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+
+ # Commands to make compiler produce verbose output that lists
+ # what "hidden" libraries, object files and flags are used when
+ # linking a shared library.
+ #
+ # There doesn't appear to be a way to prevent this compiler from
+ # explicitly linking system object files so we need to strip them
+ # from the output so that they don't get included in the library
+ # dependencies.
+ output_verbose_link_cmd='templist=`$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP "ld" | $GREP -v "ld:"`; templist=`$ECHO "X$templist" | $Xsed -e "s/\(^.*ld.*\)\( .*ld.*$\)/\1/"`; list=""; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; $ECHO "X$list" | $Xsed'
+ ;;
+ *)
+ if test "$GXX" = yes && test "$with_gnu_ld" = no; then
+ _LT_TAGVAR(allow_undefined_flag, $1)=' ${wl}-expect_unresolved ${wl}\*'
+ case $host in
+ osf3*)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib ${allow_undefined_flag} $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && $ECHO "X${wl}-set_version ${wl}$verstring" | $Xsed` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
+ ;;
+ *)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib ${allow_undefined_flag} $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-msym ${wl}-soname ${wl}$soname `test -n "$verstring" && $ECHO "${wl}-set_version ${wl}$verstring" | $Xsed` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
+ ;;
+ esac
+
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+
+ # Commands to make compiler produce verbose output that lists
+ # what "hidden" libraries, object files and flags are used when
+ # linking a shared library.
+ output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP "\-L"'
+
+ else
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ fi
+ ;;
+ esac
+ ;;
+
+ psos*)
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+
+ sunos4*)
+ case $cc_basename in
+ CC*)
+ # Sun C++ 4.x
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+ lcc*)
+ # Lucid
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+ *)
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+ esac
+ ;;
+
+ solaris*)
+ case $cc_basename in
+ CC*)
+ # Sun C++ 4.2, 5.x and Centerline C++
+ _LT_TAGVAR(archive_cmds_need_lc,$1)=yes
+ _LT_TAGVAR(no_undefined_flag, $1)=' -zdefs'
+ _LT_TAGVAR(archive_cmds, $1)='$CC -G${allow_undefined_flag} -h$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
+ $CC -G${allow_undefined_flag} ${wl}-M ${wl}$lib.exp -h$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~$RM $lib.exp'
+
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ case $host_os in
+ solaris2.[[0-5]] | solaris2.[[0-5]].*) ;;
+ *)
+ # The compiler driver will combine and reorder linker options,
+ # but understands `-z linker_flag'.
+ # Supported since Solaris 2.6 (maybe 2.5.1?)
+ _LT_TAGVAR(whole_archive_flag_spec, $1)='-z allextract$convenience -z defaultextract'
+ ;;
+ esac
+ _LT_TAGVAR(link_all_deplibs, $1)=yes
+
+ output_verbose_link_cmd='echo'
+
+ # Archives containing C++ object files must be created using
+ # "CC -xar", where "CC" is the Sun C++ compiler. This is
+ # necessary to make sure instantiated templates are included
+ # in the archive.
+ _LT_TAGVAR(old_archive_cmds, $1)='$CC -xar -o $oldlib $oldobjs'
+ ;;
+ gcx*)
+ # Green Hills C++ Compiler
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-h $wl$soname -o $lib'
+
+ # The C++ compiler must be used to create the archive.
+ _LT_TAGVAR(old_archive_cmds, $1)='$CC $LDFLAGS -archive -o $oldlib $oldobjs'
+ ;;
+ *)
+ # GNU C++ compiler with Solaris linker
+ if test "$GXX" = yes && test "$with_gnu_ld" = no; then
+ _LT_TAGVAR(no_undefined_flag, $1)=' ${wl}-z ${wl}defs'
+ if $CC --version | $GREP -v '^2\.7' > /dev/null; then
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib $LDFLAGS $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-h $wl$soname -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
+ $CC -shared -nostdlib ${wl}-M $wl$lib.exp -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~$RM $lib.exp'
+
+ # Commands to make compiler produce verbose output that lists
+ # what "hidden" libraries, object files and flags are used when
+ # linking a shared library.
+ output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP "\-L"'
+ else
+ # g++ 2.7 appears to require `-G' NOT `-shared' on this
+ # platform.
+ _LT_TAGVAR(archive_cmds, $1)='$CC -G -nostdlib $LDFLAGS $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-h $wl$soname -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
+ $CC -G -nostdlib ${wl}-M $wl$lib.exp -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~$RM $lib.exp'
+
+ # Commands to make compiler produce verbose output that lists
+ # what "hidden" libraries, object files and flags are used when
+ # linking a shared library.
+ output_verbose_link_cmd='$CC -G $CFLAGS -v conftest.$objext 2>&1 | $GREP "\-L"'
+ fi
+
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-R $wl$libdir'
+ case $host_os in
+ solaris2.[[0-5]] | solaris2.[[0-5]].*) ;;
+ *)
+ _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}-z ${wl}allextract$convenience ${wl}-z ${wl}defaultextract'
+ ;;
+ esac
+ fi
+ ;;
+ esac
+ ;;
+
+ sysv4*uw2* | sysv5OpenUNIX* | sysv5UnixWare7.[[01]].[[10]]* | unixware7* | sco3.2v5.0.[[024]]*)
+ _LT_TAGVAR(no_undefined_flag, $1)='${wl}-z,text'
+ _LT_TAGVAR(archive_cmds_need_lc, $1)=no
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ runpath_var='LD_RUN_PATH'
+
+ case $cc_basename in
+ CC*)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -G ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -G ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ ;;
+ *)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ ;;
+ esac
+ ;;
+
+ sysv5* | sco3.2v5* | sco5v6*)
+ # Note: We can NOT use -z defs as we might desire, because we do not
+ # link with -lc, and that would cause any symbols used from libc to
+ # always be unresolved, which means just about no library would
+ # ever link correctly. If we're not using GNU ld we use -z text
+ # though, which does catch some bad symbols but isn't as heavy-handed
+ # as -z defs.
+ _LT_TAGVAR(no_undefined_flag, $1)='${wl}-z,text'
+ _LT_TAGVAR(allow_undefined_flag, $1)='${wl}-z,nodefs'
+ _LT_TAGVAR(archive_cmds_need_lc, $1)=no
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-R,$libdir'
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=':'
+ _LT_TAGVAR(link_all_deplibs, $1)=yes
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-Bexport'
+ runpath_var='LD_RUN_PATH'
+
+ case $cc_basename in
+ CC*)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -G ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -G ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ ;;
+ *)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ ;;
+ esac
+ ;;
+
+ tandem*)
+ case $cc_basename in
+ NCC*)
+ # NonStop-UX NCC 3.20
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+ *)
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+ esac
+ ;;
+
+ vxworks*)
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+
+ *)
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+ esac
+
+ AC_MSG_RESULT([$_LT_TAGVAR(ld_shlibs, $1)])
+ test "$_LT_TAGVAR(ld_shlibs, $1)" = no && can_build_shared=no
+
+ _LT_TAGVAR(GCC, $1)="$GXX"
+ _LT_TAGVAR(LD, $1)="$LD"
+
+ ## CAVEAT EMPTOR:
+ ## There is no encapsulation within the following macros, do not change
+ ## the running order or otherwise move them around unless you know exactly
+ ## what you are doing...
+ _LT_SYS_HIDDEN_LIBDEPS($1)
+ _LT_COMPILER_PIC($1)
+ _LT_COMPILER_C_O($1)
+ _LT_COMPILER_FILE_LOCKS($1)
+ _LT_LINKER_SHLIBS($1)
+ _LT_SYS_DYNAMIC_LINKER($1)
+ _LT_LINKER_HARDCODE_LIBPATH($1)
+
+ _LT_CONFIG($1)
+ fi # test -n "$compiler"
+
+ CC=$lt_save_CC
+ LDCXX=$LD
+ LD=$lt_save_LD
+ GCC=$lt_save_GCC
+ with_gnu_ld=$lt_save_with_gnu_ld
+ lt_cv_path_LDCXX=$lt_cv_path_LD
+ lt_cv_path_LD=$lt_save_path_LD
+ lt_cv_prog_gnu_ldcxx=$lt_cv_prog_gnu_ld
+ lt_cv_prog_gnu_ld=$lt_save_with_gnu_ld
+fi # test "$_lt_caught_CXX_error" != yes
+
+AC_LANG_POP
+])# _LT_LANG_CXX_CONFIG
+
+
+# _LT_SYS_HIDDEN_LIBDEPS([TAGNAME])
+# ---------------------------------
+# Figure out "hidden" library dependencies from verbose
+# compiler output when linking a shared library.
+# Parse the compiler output and extract the necessary
+# objects, libraries and library flags.
+m4_defun([_LT_SYS_HIDDEN_LIBDEPS],
+[m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+# Dependencies to place before and after the object being linked:
+_LT_TAGVAR(predep_objects, $1)=
+_LT_TAGVAR(postdep_objects, $1)=
+_LT_TAGVAR(predeps, $1)=
+_LT_TAGVAR(postdeps, $1)=
+_LT_TAGVAR(compiler_lib_search_path, $1)=
+
+dnl we can't use the lt_simple_compile_test_code here,
+dnl because it contains code intended for an executable,
+dnl not a library. It's possible we should let each
+dnl tag define a new lt_????_link_test_code variable,
+dnl but it's only used here...
+m4_if([$1], [], [cat > conftest.$ac_ext <<_LT_EOF
+int a;
+void foo (void) { a = 0; }
+_LT_EOF
+], [$1], [CXX], [cat > conftest.$ac_ext <<_LT_EOF
+class Foo
+{
+public:
+ Foo (void) { a = 0; }
+private:
+ int a;
+};
+_LT_EOF
+], [$1], [F77], [cat > conftest.$ac_ext <<_LT_EOF
+ subroutine foo
+ implicit none
+ integer*4 a
+ a=0
+ return
+ end
+_LT_EOF
+], [$1], [FC], [cat > conftest.$ac_ext <<_LT_EOF
+ subroutine foo
+ implicit none
+ integer a
+ a=0
+ return
+ end
+_LT_EOF
+], [$1], [GCJ], [cat > conftest.$ac_ext <<_LT_EOF
+public class foo {
+ private int a;
+ public void bar (void) {
+ a = 0;
+ }
+};
+_LT_EOF
+])
+dnl Parse the compiler output and extract the necessary
+dnl objects, libraries and library flags.
+if AC_TRY_EVAL(ac_compile); then
+ # Parse the compiler output and extract the necessary
+ # objects, libraries and library flags.
+
+ # Sentinel used to keep track of whether or not we are before
+ # the conftest object file.
+ pre_test_object_deps_done=no
+
+ for p in `eval "$output_verbose_link_cmd"`; do
+ case $p in
+
+ -L* | -R* | -l*)
+ # Some compilers place space between "-{L,R}" and the path.
+ # Remove the space.
+ if test $p = "-L" ||
+ test $p = "-R"; then
+ prev=$p
+ continue
+ else
+ prev=
+ fi
+
+ if test "$pre_test_object_deps_done" = no; then
+ case $p in
+ -L* | -R*)
+ # Internal compiler library paths should come after those
+ # provided the user. The postdeps already come after the
+ # user supplied libs so there is no need to process them.
+ if test -z "$_LT_TAGVAR(compiler_lib_search_path, $1)"; then
+ _LT_TAGVAR(compiler_lib_search_path, $1)="${prev}${p}"
+ else
+ _LT_TAGVAR(compiler_lib_search_path, $1)="${_LT_TAGVAR(compiler_lib_search_path, $1)} ${prev}${p}"
+ fi
+ ;;
+ # The "-l" case would never come before the object being
+ # linked, so don't bother handling this case.
+ esac
+ else
+ if test -z "$_LT_TAGVAR(postdeps, $1)"; then
+ _LT_TAGVAR(postdeps, $1)="${prev}${p}"
+ else
+ _LT_TAGVAR(postdeps, $1)="${_LT_TAGVAR(postdeps, $1)} ${prev}${p}"
+ fi
+ fi
+ ;;
+
+ *.$objext)
+ # This assumes that the test object file only shows up
+ # once in the compiler output.
+ if test "$p" = "conftest.$objext"; then
+ pre_test_object_deps_done=yes
+ continue
+ fi
+
+ if test "$pre_test_object_deps_done" = no; then
+ if test -z "$_LT_TAGVAR(predep_objects, $1)"; then
+ _LT_TAGVAR(predep_objects, $1)="$p"
+ else
+ _LT_TAGVAR(predep_objects, $1)="$_LT_TAGVAR(predep_objects, $1) $p"
+ fi
+ else
+ if test -z "$_LT_TAGVAR(postdep_objects, $1)"; then
+ _LT_TAGVAR(postdep_objects, $1)="$p"
+ else
+ _LT_TAGVAR(postdep_objects, $1)="$_LT_TAGVAR(postdep_objects, $1) $p"
+ fi
+ fi
+ ;;
+
+ *) ;; # Ignore the rest.
+
+ esac
+ done
+
+ # Clean up.
+ rm -f a.out a.exe
+else
+ echo "libtool.m4: error: problem compiling $1 test program"
+fi
+
+$RM -f confest.$objext
+
+# PORTME: override above test on systems where it is broken
+m4_if([$1], [CXX],
+[case $host_os in
+interix[[3-9]]*)
+ # Interix 3.5 installs completely hosed .la files for C++, so rather than
+ # hack all around it, let's just trust "g++" to DTRT.
+ _LT_TAGVAR(predep_objects,$1)=
+ _LT_TAGVAR(postdep_objects,$1)=
+ _LT_TAGVAR(postdeps,$1)=
+ ;;
+
+linux*)
+ case `$CC -V 2>&1 | sed 5q` in
+ *Sun\ C*)
+ # Sun C++ 5.9
+
+ # The more standards-conforming stlport4 library is
+ # incompatible with the Cstd library. Avoid specifying
+ # it if it's in CXXFLAGS. Ignore libCrun as
+ # -library=stlport4 depends on it.
+ case " $CXX $CXXFLAGS " in
+ *" -library=stlport4 "*)
+ solaris_use_stlport4=yes
+ ;;
+ esac
+
+ if test "$solaris_use_stlport4" != yes; then
+ _LT_TAGVAR(postdeps,$1)='-library=Cstd -library=Crun'
+ fi
+ ;;
+ esac
+ ;;
+
+solaris*)
+ case $cc_basename in
+ CC*)
+ # The more standards-conforming stlport4 library is
+ # incompatible with the Cstd library. Avoid specifying
+ # it if it's in CXXFLAGS. Ignore libCrun as
+ # -library=stlport4 depends on it.
+ case " $CXX $CXXFLAGS " in
+ *" -library=stlport4 "*)
+ solaris_use_stlport4=yes
+ ;;
+ esac
+
+ # Adding this requires a known-good setup of shared libraries for
+ # Sun compiler versions before 5.6, else PIC objects from an old
+ # archive will be linked into the output, leading to subtle bugs.
+ if test "$solaris_use_stlport4" != yes; then
+ _LT_TAGVAR(postdeps,$1)='-library=Cstd -library=Crun'
+ fi
+ ;;
+ esac
+ ;;
+esac
+])
+
+case " $_LT_TAGVAR(postdeps, $1) " in
+*" -lc "*) _LT_TAGVAR(archive_cmds_need_lc, $1)=no ;;
+esac
+ _LT_TAGVAR(compiler_lib_search_dirs, $1)=
+if test -n "${_LT_TAGVAR(compiler_lib_search_path, $1)}"; then
+ _LT_TAGVAR(compiler_lib_search_dirs, $1)=`echo " ${_LT_TAGVAR(compiler_lib_search_path, $1)}" | ${SED} -e 's! -L! !g' -e 's!^ !!'`
+fi
+_LT_TAGDECL([], [compiler_lib_search_dirs], [1],
+ [The directories searched by this compiler when creating a shared library])
+_LT_TAGDECL([], [predep_objects], [1],
+ [Dependencies to place before and after the objects being linked to
+ create a shared library])
+_LT_TAGDECL([], [postdep_objects], [1])
+_LT_TAGDECL([], [predeps], [1])
+_LT_TAGDECL([], [postdeps], [1])
+_LT_TAGDECL([], [compiler_lib_search_path], [1],
+ [The library search path used internally by the compiler when linking
+ a shared library])
+])# _LT_SYS_HIDDEN_LIBDEPS
+
+
+# _LT_PROG_F77
+# ------------
+# Since AC_PROG_F77 is broken, in that it returns the empty string
+# if there is no fortran compiler, we have our own version here.
+m4_defun([_LT_PROG_F77],
+[
+pushdef([AC_MSG_ERROR], [_lt_disable_F77=yes])
+AC_PROG_F77
+if test -z "$F77" || test "X$F77" = "Xno"; then
+ _lt_disable_F77=yes
+fi
+popdef([AC_MSG_ERROR])
+])# _LT_PROG_F77
+
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([_LT_PROG_F77], [])
+
+
+# _LT_LANG_F77_CONFIG([TAG])
+# --------------------------
+# Ensure that the configuration variables for a Fortran 77 compiler are
+# suitably defined. These variables are subsequently used by _LT_CONFIG
+# to write the compiler configuration to `libtool'.
+m4_defun([_LT_LANG_F77_CONFIG],
+[AC_REQUIRE([_LT_PROG_F77])dnl
+AC_LANG_PUSH(Fortran 77)
+
+_LT_TAGVAR(archive_cmds_need_lc, $1)=no
+_LT_TAGVAR(allow_undefined_flag, $1)=
+_LT_TAGVAR(always_export_symbols, $1)=no
+_LT_TAGVAR(archive_expsym_cmds, $1)=
+_LT_TAGVAR(export_dynamic_flag_spec, $1)=
+_LT_TAGVAR(hardcode_direct, $1)=no
+_LT_TAGVAR(hardcode_direct_absolute, $1)=no
+_LT_TAGVAR(hardcode_libdir_flag_spec, $1)=
+_LT_TAGVAR(hardcode_libdir_flag_spec_ld, $1)=
+_LT_TAGVAR(hardcode_libdir_separator, $1)=
+_LT_TAGVAR(hardcode_minus_L, $1)=no
+_LT_TAGVAR(hardcode_automatic, $1)=no
+_LT_TAGVAR(inherit_rpath, $1)=no
+_LT_TAGVAR(module_cmds, $1)=
+_LT_TAGVAR(module_expsym_cmds, $1)=
+_LT_TAGVAR(link_all_deplibs, $1)=unknown
+_LT_TAGVAR(old_archive_cmds, $1)=$old_archive_cmds
+_LT_TAGVAR(no_undefined_flag, $1)=
+_LT_TAGVAR(whole_archive_flag_spec, $1)=
+_LT_TAGVAR(enable_shared_with_static_runtimes, $1)=no
+
+# Source file extension for f77 test sources.
+ac_ext=f
+
+# Object file extension for compiled f77 test sources.
+objext=o
+_LT_TAGVAR(objext, $1)=$objext
+
+# No sense in running all these tests if we already determined that
+# the F77 compiler isn't working. Some variables (like enable_shared)
+# are currently assumed to apply to all compilers on this platform,
+# and will be corrupted by setting them based on a non-working compiler.
+if test "$_lt_disable_F77" != yes; then
+ # Code to be used in simple compile tests
+ lt_simple_compile_test_code="\
+ subroutine t
+ return
+ end
+"
+
+ # Code to be used in simple link tests
+ lt_simple_link_test_code="\
+ program t
+ end
+"
+
+ # ltmain only uses $CC for tagged configurations so make sure $CC is set.
+ _LT_TAG_COMPILER
+
+ # save warnings/boilerplate of simple test code
+ _LT_COMPILER_BOILERPLATE
+ _LT_LINKER_BOILERPLATE
+
+ # Allow CC to be a program name with arguments.
+ lt_save_CC="$CC"
+ lt_save_GCC=$GCC
+ CC=${F77-"f77"}
+ compiler=$CC
+ _LT_TAGVAR(compiler, $1)=$CC
+ _LT_CC_BASENAME([$compiler])
+ GCC=$G77
+ if test -n "$compiler"; then
+ AC_MSG_CHECKING([if libtool supports shared libraries])
+ AC_MSG_RESULT([$can_build_shared])
+
+ AC_MSG_CHECKING([whether to build shared libraries])
+ test "$can_build_shared" = "no" && enable_shared=no
+
+ # On AIX, shared libraries and static libraries use the same namespace, and
+ # are all built from PIC.
+ case $host_os in
+ aix3*)
+ test "$enable_shared" = yes && enable_static=no
+ if test -n "$RANLIB"; then
+ archive_cmds="$archive_cmds~\$RANLIB \$lib"
+ postinstall_cmds='$RANLIB $lib'
+ fi
+ ;;
+ aix[[4-9]]*)
+ if test "$host_cpu" != ia64 && test "$aix_use_runtimelinking" = no ; then
+ test "$enable_shared" = yes && enable_static=no
+ fi
+ ;;
+ esac
+ AC_MSG_RESULT([$enable_shared])
+
+ AC_MSG_CHECKING([whether to build static libraries])
+ # Make sure either enable_shared or enable_static is yes.
+ test "$enable_shared" = yes || enable_static=yes
+ AC_MSG_RESULT([$enable_static])
+
+ _LT_TAGVAR(GCC, $1)="$G77"
+ _LT_TAGVAR(LD, $1)="$LD"
+
+ ## CAVEAT EMPTOR:
+ ## There is no encapsulation within the following macros, do not change
+ ## the running order or otherwise move them around unless you know exactly
+ ## what you are doing...
+ _LT_COMPILER_PIC($1)
+ _LT_COMPILER_C_O($1)
+ _LT_COMPILER_FILE_LOCKS($1)
+ _LT_LINKER_SHLIBS($1)
+ _LT_SYS_DYNAMIC_LINKER($1)
+ _LT_LINKER_HARDCODE_LIBPATH($1)
+
+ _LT_CONFIG($1)
+ fi # test -n "$compiler"
+
+ GCC=$lt_save_GCC
+ CC="$lt_save_CC"
+fi # test "$_lt_disable_F77" != yes
+
+AC_LANG_POP
+])# _LT_LANG_F77_CONFIG
+
+
+# _LT_PROG_FC
+# -----------
+# Since AC_PROG_FC is broken, in that it returns the empty string
+# if there is no fortran compiler, we have our own version here.
+m4_defun([_LT_PROG_FC],
+[
+pushdef([AC_MSG_ERROR], [_lt_disable_FC=yes])
+AC_PROG_FC
+if test -z "$FC" || test "X$FC" = "Xno"; then
+ _lt_disable_FC=yes
+fi
+popdef([AC_MSG_ERROR])
+])# _LT_PROG_FC
+
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([_LT_PROG_FC], [])
+
+
+# _LT_LANG_FC_CONFIG([TAG])
+# -------------------------
+# Ensure that the configuration variables for a Fortran compiler are
+# suitably defined. These variables are subsequently used by _LT_CONFIG
+# to write the compiler configuration to `libtool'.
+m4_defun([_LT_LANG_FC_CONFIG],
+[AC_REQUIRE([_LT_PROG_FC])dnl
+AC_LANG_PUSH(Fortran)
+
+_LT_TAGVAR(archive_cmds_need_lc, $1)=no
+_LT_TAGVAR(allow_undefined_flag, $1)=
+_LT_TAGVAR(always_export_symbols, $1)=no
+_LT_TAGVAR(archive_expsym_cmds, $1)=
+_LT_TAGVAR(export_dynamic_flag_spec, $1)=
+_LT_TAGVAR(hardcode_direct, $1)=no
+_LT_TAGVAR(hardcode_direct_absolute, $1)=no
+_LT_TAGVAR(hardcode_libdir_flag_spec, $1)=
+_LT_TAGVAR(hardcode_libdir_flag_spec_ld, $1)=
+_LT_TAGVAR(hardcode_libdir_separator, $1)=
+_LT_TAGVAR(hardcode_minus_L, $1)=no
+_LT_TAGVAR(hardcode_automatic, $1)=no
+_LT_TAGVAR(inherit_rpath, $1)=no
+_LT_TAGVAR(module_cmds, $1)=
+_LT_TAGVAR(module_expsym_cmds, $1)=
+_LT_TAGVAR(link_all_deplibs, $1)=unknown
+_LT_TAGVAR(old_archive_cmds, $1)=$old_archive_cmds
+_LT_TAGVAR(no_undefined_flag, $1)=
+_LT_TAGVAR(whole_archive_flag_spec, $1)=
+_LT_TAGVAR(enable_shared_with_static_runtimes, $1)=no
+
+# Source file extension for fc test sources.
+ac_ext=${ac_fc_srcext-f}
+
+# Object file extension for compiled fc test sources.
+objext=o
+_LT_TAGVAR(objext, $1)=$objext
+
+# No sense in running all these tests if we already determined that
+# the FC compiler isn't working. Some variables (like enable_shared)
+# are currently assumed to apply to all compilers on this platform,
+# and will be corrupted by setting them based on a non-working compiler.
+if test "$_lt_disable_FC" != yes; then
+ # Code to be used in simple compile tests
+ lt_simple_compile_test_code="\
+ subroutine t
+ return
+ end
+"
+
+ # Code to be used in simple link tests
+ lt_simple_link_test_code="\
+ program t
+ end
+"
+
+ # ltmain only uses $CC for tagged configurations so make sure $CC is set.
+ _LT_TAG_COMPILER
+
+ # save warnings/boilerplate of simple test code
+ _LT_COMPILER_BOILERPLATE
+ _LT_LINKER_BOILERPLATE
+
+ # Allow CC to be a program name with arguments.
+ lt_save_CC="$CC"
+ lt_save_GCC=$GCC
+ CC=${FC-"f95"}
+ compiler=$CC
+ GCC=$ac_cv_fc_compiler_gnu
+
+ _LT_TAGVAR(compiler, $1)=$CC
+ _LT_CC_BASENAME([$compiler])
+
+ if test -n "$compiler"; then
+ AC_MSG_CHECKING([if libtool supports shared libraries])
+ AC_MSG_RESULT([$can_build_shared])
+
+ AC_MSG_CHECKING([whether to build shared libraries])
+ test "$can_build_shared" = "no" && enable_shared=no
+
+ # On AIX, shared libraries and static libraries use the same namespace, and
+ # are all built from PIC.
+ case $host_os in
+ aix3*)
+ test "$enable_shared" = yes && enable_static=no
+ if test -n "$RANLIB"; then
+ archive_cmds="$archive_cmds~\$RANLIB \$lib"
+ postinstall_cmds='$RANLIB $lib'
+ fi
+ ;;
+ aix[[4-9]]*)
+ if test "$host_cpu" != ia64 && test "$aix_use_runtimelinking" = no ; then
+ test "$enable_shared" = yes && enable_static=no
+ fi
+ ;;
+ esac
+ AC_MSG_RESULT([$enable_shared])
+
+ AC_MSG_CHECKING([whether to build static libraries])
+ # Make sure either enable_shared or enable_static is yes.
+ test "$enable_shared" = yes || enable_static=yes
+ AC_MSG_RESULT([$enable_static])
+
+ _LT_TAGVAR(GCC, $1)="$ac_cv_fc_compiler_gnu"
+ _LT_TAGVAR(LD, $1)="$LD"
+
+ ## CAVEAT EMPTOR:
+ ## There is no encapsulation within the following macros, do not change
+ ## the running order or otherwise move them around unless you know exactly
+ ## what you are doing...
+ _LT_SYS_HIDDEN_LIBDEPS($1)
+ _LT_COMPILER_PIC($1)
+ _LT_COMPILER_C_O($1)
+ _LT_COMPILER_FILE_LOCKS($1)
+ _LT_LINKER_SHLIBS($1)
+ _LT_SYS_DYNAMIC_LINKER($1)
+ _LT_LINKER_HARDCODE_LIBPATH($1)
+
+ _LT_CONFIG($1)
+ fi # test -n "$compiler"
+
+ GCC=$lt_save_GCC
+ CC="$lt_save_CC"
+fi # test "$_lt_disable_FC" != yes
+
+AC_LANG_POP
+])# _LT_LANG_FC_CONFIG
+
+
+# _LT_LANG_GCJ_CONFIG([TAG])
+# --------------------------
+# Ensure that the configuration variables for the GNU Java Compiler compiler
+# are suitably defined. These variables are subsequently used by _LT_CONFIG
+# to write the compiler configuration to `libtool'.
+m4_defun([_LT_LANG_GCJ_CONFIG],
+[AC_REQUIRE([LT_PROG_GCJ])dnl
+AC_LANG_SAVE
+
+# Source file extension for Java test sources.
+ac_ext=java
+
+# Object file extension for compiled Java test sources.
+objext=o
+_LT_TAGVAR(objext, $1)=$objext
+
+# Code to be used in simple compile tests
+lt_simple_compile_test_code="class foo {}"
+
+# Code to be used in simple link tests
+lt_simple_link_test_code='public class conftest { public static void main(String[[]] argv) {}; }'
+
+# ltmain only uses $CC for tagged configurations so make sure $CC is set.
+_LT_TAG_COMPILER
+
+# save warnings/boilerplate of simple test code
+_LT_COMPILER_BOILERPLATE
+_LT_LINKER_BOILERPLATE
+
+# Allow CC to be a program name with arguments.
+lt_save_CC="$CC"
+lt_save_GCC=$GCC
+GCC=yes
+CC=${GCJ-"gcj"}
+compiler=$CC
+_LT_TAGVAR(compiler, $1)=$CC
+_LT_TAGVAR(LD, $1)="$LD"
+_LT_CC_BASENAME([$compiler])
+
+# GCJ did not exist at the time GCC didn't implicitly link libc in.
+_LT_TAGVAR(archive_cmds_need_lc, $1)=no
+
+_LT_TAGVAR(old_archive_cmds, $1)=$old_archive_cmds
+
+if test -n "$compiler"; then
+ _LT_COMPILER_NO_RTTI($1)
+ _LT_COMPILER_PIC($1)
+ _LT_COMPILER_C_O($1)
+ _LT_COMPILER_FILE_LOCKS($1)
+ _LT_LINKER_SHLIBS($1)
+ _LT_LINKER_HARDCODE_LIBPATH($1)
+
+ _LT_CONFIG($1)
+fi
+
+AC_LANG_RESTORE
+
+GCC=$lt_save_GCC
+CC="$lt_save_CC"
+])# _LT_LANG_GCJ_CONFIG
+
+
+# _LT_LANG_RC_CONFIG([TAG])
+# -------------------------
+# Ensure that the configuration variables for the Windows resource compiler
+# are suitably defined. These variables are subsequently used by _LT_CONFIG
+# to write the compiler configuration to `libtool'.
+m4_defun([_LT_LANG_RC_CONFIG],
+[AC_REQUIRE([LT_PROG_RC])dnl
+AC_LANG_SAVE
+
+# Source file extension for RC test sources.
+ac_ext=rc
+
+# Object file extension for compiled RC test sources.
+objext=o
+_LT_TAGVAR(objext, $1)=$objext
+
+# Code to be used in simple compile tests
+lt_simple_compile_test_code='sample MENU { MENUITEM "&Soup", 100, CHECKED }'
+
+# Code to be used in simple link tests
+lt_simple_link_test_code="$lt_simple_compile_test_code"
+
+# ltmain only uses $CC for tagged configurations so make sure $CC is set.
+_LT_TAG_COMPILER
+
+# save warnings/boilerplate of simple test code
+_LT_COMPILER_BOILERPLATE
+_LT_LINKER_BOILERPLATE
+
+# Allow CC to be a program name with arguments.
+lt_save_CC="$CC"
+lt_save_GCC=$GCC
+GCC=
+CC=${RC-"windres"}
+compiler=$CC
+_LT_TAGVAR(compiler, $1)=$CC
+_LT_CC_BASENAME([$compiler])
+_LT_TAGVAR(lt_cv_prog_compiler_c_o, $1)=yes
+
+if test -n "$compiler"; then
+ :
+ _LT_CONFIG($1)
+fi
+
+GCC=$lt_save_GCC
+AC_LANG_RESTORE
+CC="$lt_save_CC"
+])# _LT_LANG_RC_CONFIG
+
+
+# LT_PROG_GCJ
+# -----------
+AC_DEFUN([LT_PROG_GCJ],
+[m4_ifdef([AC_PROG_GCJ], [AC_PROG_GCJ],
+ [m4_ifdef([A][M_PROG_GCJ], [A][M_PROG_GCJ],
+ [AC_CHECK_TOOL(GCJ, gcj,)
+ test "x${GCJFLAGS+set}" = xset || GCJFLAGS="-g -O2"
+ AC_SUBST(GCJFLAGS)])])[]dnl
+])
+
+# Old name:
+AU_ALIAS([LT_AC_PROG_GCJ], [LT_PROG_GCJ])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([LT_AC_PROG_GCJ], [])
+
+
+# LT_PROG_RC
+# ----------
+AC_DEFUN([LT_PROG_RC],
+[AC_CHECK_TOOL(RC, windres,)
+])
+
+# Old name:
+AU_ALIAS([LT_AC_PROG_RC], [LT_PROG_RC])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([LT_AC_PROG_RC], [])
+
+
+# _LT_DECL_EGREP
+# --------------
+# If we don't have a new enough Autoconf to choose the best grep
+# available, choose the one first in the user's PATH.
+m4_defun([_LT_DECL_EGREP],
+[AC_REQUIRE([AC_PROG_EGREP])dnl
+AC_REQUIRE([AC_PROG_FGREP])dnl
+test -z "$GREP" && GREP=grep
+_LT_DECL([], [GREP], [1], [A grep program that handles long lines])
+_LT_DECL([], [EGREP], [1], [An ERE matcher])
+_LT_DECL([], [FGREP], [1], [A literal string matcher])
+dnl Non-bleeding-edge autoconf doesn't subst GREP, so do it here too
+AC_SUBST([GREP])
+])
+
+
+# _LT_DECL_OBJDUMP
+# --------------
+# If we don't have a new enough Autoconf to choose the best objdump
+# available, choose the one first in the user's PATH.
+m4_defun([_LT_DECL_OBJDUMP],
+[AC_CHECK_TOOL(OBJDUMP, objdump, false)
+test -z "$OBJDUMP" && OBJDUMP=objdump
+_LT_DECL([], [OBJDUMP], [1], [An object symbol dumper])
+AC_SUBST([OBJDUMP])
+])
+
+
+# _LT_DECL_SED
+# ------------
+# Check for a fully-functional sed program, that truncates
+# as few characters as possible. Prefer GNU sed if found.
+m4_defun([_LT_DECL_SED],
+[AC_PROG_SED
+test -z "$SED" && SED=sed
+Xsed="$SED -e 1s/^X//"
+_LT_DECL([], [SED], [1], [A sed program that does not truncate output])
+_LT_DECL([], [Xsed], ["\$SED -e 1s/^X//"],
+ [Sed that helps us avoid accidentally triggering echo(1) options like -n])
+])# _LT_DECL_SED
+
+m4_ifndef([AC_PROG_SED], [
+# NOTE: This macro has been submitted for inclusion into #
+# GNU Autoconf as AC_PROG_SED. When it is available in #
+# a released version of Autoconf we should remove this #
+# macro and use it instead. #
+
+m4_defun([AC_PROG_SED],
+[AC_MSG_CHECKING([for a sed that does not truncate output])
+AC_CACHE_VAL(lt_cv_path_SED,
+[# Loop through the user's path and test for sed and gsed.
+# Then use that list of sed's as ones to test for truncation.
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for lt_ac_prog in sed gsed; do
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if $as_executable_p "$as_dir/$lt_ac_prog$ac_exec_ext"; then
+ lt_ac_sed_list="$lt_ac_sed_list $as_dir/$lt_ac_prog$ac_exec_ext"
+ fi
+ done
+ done
+done
+IFS=$as_save_IFS
+lt_ac_max=0
+lt_ac_count=0
+# Add /usr/xpg4/bin/sed as it is typically found on Solaris
+# along with /bin/sed that truncates output.
+for lt_ac_sed in $lt_ac_sed_list /usr/xpg4/bin/sed; do
+ test ! -f $lt_ac_sed && continue
+ cat /dev/null > conftest.in
+ lt_ac_count=0
+ echo $ECHO_N "0123456789$ECHO_C" >conftest.in
+ # Check for GNU sed and select it if it is found.
+ if "$lt_ac_sed" --version 2>&1 < /dev/null | grep 'GNU' > /dev/null; then
+ lt_cv_path_SED=$lt_ac_sed
+ break
+ fi
+ while true; do
+ cat conftest.in conftest.in >conftest.tmp
+ mv conftest.tmp conftest.in
+ cp conftest.in conftest.nl
+ echo >>conftest.nl
+ $lt_ac_sed -e 's/a$//' < conftest.nl >conftest.out || break
+ cmp -s conftest.out conftest.nl || break
+ # 10000 chars as input seems more than enough
+ test $lt_ac_count -gt 10 && break
+ lt_ac_count=`expr $lt_ac_count + 1`
+ if test $lt_ac_count -gt $lt_ac_max; then
+ lt_ac_max=$lt_ac_count
+ lt_cv_path_SED=$lt_ac_sed
+ fi
+ done
+done
+])
+SED=$lt_cv_path_SED
+AC_SUBST([SED])
+AC_MSG_RESULT([$SED])
+])#AC_PROG_SED
+])#m4_ifndef
+
+# Old name:
+AU_ALIAS([LT_AC_PROG_SED], [AC_PROG_SED])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([LT_AC_PROG_SED], [])
+
+
+# _LT_CHECK_SHELL_FEATURES
+# ------------------------
+# Find out whether the shell is Bourne or XSI compatible,
+# or has some other useful features.
+m4_defun([_LT_CHECK_SHELL_FEATURES],
+[AC_MSG_CHECKING([whether the shell understands some XSI constructs])
+# Try some XSI features
+xsi_shell=no
+( _lt_dummy="a/b/c"
+ test "${_lt_dummy##*/},${_lt_dummy%/*},"${_lt_dummy%"$_lt_dummy"}, \
+ = c,a/b,, \
+ && eval 'test $(( 1 + 1 )) -eq 2 \
+ && test "${#_lt_dummy}" -eq 5' ) >/dev/null 2>&1 \
+ && xsi_shell=yes
+AC_MSG_RESULT([$xsi_shell])
+_LT_CONFIG_LIBTOOL_INIT([xsi_shell='$xsi_shell'])
+
+AC_MSG_CHECKING([whether the shell understands "+="])
+lt_shell_append=no
+( foo=bar; set foo baz; eval "$[1]+=\$[2]" && test "$foo" = barbaz ) \
+ >/dev/null 2>&1 \
+ && lt_shell_append=yes
+AC_MSG_RESULT([$lt_shell_append])
+_LT_CONFIG_LIBTOOL_INIT([lt_shell_append='$lt_shell_append'])
+
+if ( (MAIL=60; unset MAIL) || exit) >/dev/null 2>&1; then
+ lt_unset=unset
+else
+ lt_unset=false
+fi
+_LT_DECL([], [lt_unset], [0], [whether the shell understands "unset"])dnl
+
+# test EBCDIC or ASCII
+case `echo X|tr X '\101'` in
+ A) # ASCII based system
+ # \n is not interpreted correctly by Solaris 8 /usr/ucb/tr
+ lt_SP2NL='tr \040 \012'
+ lt_NL2SP='tr \015\012 \040\040'
+ ;;
+ *) # EBCDIC based system
+ lt_SP2NL='tr \100 \n'
+ lt_NL2SP='tr \r\n \100\100'
+ ;;
+esac
+_LT_DECL([SP2NL], [lt_SP2NL], [1], [turn spaces into newlines])dnl
+_LT_DECL([NL2SP], [lt_NL2SP], [1], [turn newlines into spaces])dnl
+])# _LT_CHECK_SHELL_FEATURES
+
+
+# _LT_PROG_XSI_SHELLFNS
+# ---------------------
+# Bourne and XSI compatible variants of some useful shell functions.
+m4_defun([_LT_PROG_XSI_SHELLFNS],
+[case $xsi_shell in
+ yes)
+ cat << \_LT_EOF >> "$cfgfile"
+
+# func_dirname file append nondir_replacement
+# Compute the dirname of FILE. If nonempty, add APPEND to the result,
+# otherwise set result to NONDIR_REPLACEMENT.
+func_dirname ()
+{
+ case ${1} in
+ */*) func_dirname_result="${1%/*}${2}" ;;
+ * ) func_dirname_result="${3}" ;;
+ esac
+}
+
+# func_basename file
+func_basename ()
+{
+ func_basename_result="${1##*/}"
+}
+
+# func_dirname_and_basename file append nondir_replacement
+# perform func_basename and func_dirname in a single function
+# call:
+# dirname: Compute the dirname of FILE. If nonempty,
+# add APPEND to the result, otherwise set result
+# to NONDIR_REPLACEMENT.
+# value returned in "$func_dirname_result"
+# basename: Compute filename of FILE.
+# value retuned in "$func_basename_result"
+# Implementation must be kept synchronized with func_dirname
+# and func_basename. For efficiency, we do not delegate to
+# those functions but instead duplicate the functionality here.
+func_dirname_and_basename ()
+{
+ case ${1} in
+ */*) func_dirname_result="${1%/*}${2}" ;;
+ * ) func_dirname_result="${3}" ;;
+ esac
+ func_basename_result="${1##*/}"
+}
+
+# func_stripname prefix suffix name
+# strip PREFIX and SUFFIX off of NAME.
+# PREFIX and SUFFIX must not contain globbing or regex special
+# characters, hashes, percent signs, but SUFFIX may contain a leading
+# dot (in which case that matches only a dot).
+func_stripname ()
+{
+ # pdksh 5.2.14 does not do ${X%$Y} correctly if both X and Y are
+ # positional parameters, so assign one to ordinary parameter first.
+ func_stripname_result=${3}
+ func_stripname_result=${func_stripname_result#"${1}"}
+ func_stripname_result=${func_stripname_result%"${2}"}
+}
+
+# func_opt_split
+func_opt_split ()
+{
+ func_opt_split_opt=${1%%=*}
+ func_opt_split_arg=${1#*=}
+}
+
+# func_lo2o object
+func_lo2o ()
+{
+ case ${1} in
+ *.lo) func_lo2o_result=${1%.lo}.${objext} ;;
+ *) func_lo2o_result=${1} ;;
+ esac
+}
+
+# func_xform libobj-or-source
+func_xform ()
+{
+ func_xform_result=${1%.*}.lo
+}
+
+# func_arith arithmetic-term...
+func_arith ()
+{
+ func_arith_result=$(( $[*] ))
+}
+
+# func_len string
+# STRING may not start with a hyphen.
+func_len ()
+{
+ func_len_result=${#1}
+}
+
+_LT_EOF
+ ;;
+ *) # Bourne compatible functions.
+ cat << \_LT_EOF >> "$cfgfile"
+
+# func_dirname file append nondir_replacement
+# Compute the dirname of FILE. If nonempty, add APPEND to the result,
+# otherwise set result to NONDIR_REPLACEMENT.
+func_dirname ()
+{
+ # Extract subdirectory from the argument.
+ func_dirname_result=`$ECHO "X${1}" | $Xsed -e "$dirname"`
+ if test "X$func_dirname_result" = "X${1}"; then
+ func_dirname_result="${3}"
+ else
+ func_dirname_result="$func_dirname_result${2}"
+ fi
+}
+
+# func_basename file
+func_basename ()
+{
+ func_basename_result=`$ECHO "X${1}" | $Xsed -e "$basename"`
+}
+
+dnl func_dirname_and_basename
+dnl A portable version of this function is already defined in general.m4sh
+dnl so there is no need for it here.
+
+# func_stripname prefix suffix name
+# strip PREFIX and SUFFIX off of NAME.
+# PREFIX and SUFFIX must not contain globbing or regex special
+# characters, hashes, percent signs, but SUFFIX may contain a leading
+# dot (in which case that matches only a dot).
+# func_strip_suffix prefix name
+func_stripname ()
+{
+ case ${2} in
+ .*) func_stripname_result=`$ECHO "X${3}" \
+ | $Xsed -e "s%^${1}%%" -e "s%\\\\${2}\$%%"`;;
+ *) func_stripname_result=`$ECHO "X${3}" \
+ | $Xsed -e "s%^${1}%%" -e "s%${2}\$%%"`;;
+ esac
+}
+
+# sed scripts:
+my_sed_long_opt='1s/^\(-[[^=]]*\)=.*/\1/;q'
+my_sed_long_arg='1s/^-[[^=]]*=//'
+
+# func_opt_split
+func_opt_split ()
+{
+ func_opt_split_opt=`$ECHO "X${1}" | $Xsed -e "$my_sed_long_opt"`
+ func_opt_split_arg=`$ECHO "X${1}" | $Xsed -e "$my_sed_long_arg"`
+}
+
+# func_lo2o object
+func_lo2o ()
+{
+ func_lo2o_result=`$ECHO "X${1}" | $Xsed -e "$lo2o"`
+}
+
+# func_xform libobj-or-source
+func_xform ()
+{
+ func_xform_result=`$ECHO "X${1}" | $Xsed -e 's/\.[[^.]]*$/.lo/'`
+}
+
+# func_arith arithmetic-term...
+func_arith ()
+{
+ func_arith_result=`expr "$[@]"`
+}
+
+# func_len string
+# STRING may not start with a hyphen.
+func_len ()
+{
+ func_len_result=`expr "$[1]" : ".*" 2>/dev/null || echo $max_cmd_len`
+}
+
+_LT_EOF
+esac
+
+case $lt_shell_append in
+ yes)
+ cat << \_LT_EOF >> "$cfgfile"
+
+# func_append var value
+# Append VALUE to the end of shell variable VAR.
+func_append ()
+{
+ eval "$[1]+=\$[2]"
+}
+_LT_EOF
+ ;;
+ *)
+ cat << \_LT_EOF >> "$cfgfile"
+
+# func_append var value
+# Append VALUE to the end of shell variable VAR.
+func_append ()
+{
+ eval "$[1]=\$$[1]\$[2]"
+}
+
+_LT_EOF
+ ;;
+ esac
+])
+
+# Helper functions for option handling. -*- Autoconf -*-
+#
+# Copyright (C) 2004, 2005, 2007, 2008 Free Software Foundation, Inc.
+# Written by Gary V. Vaughan, 2004
+#
+# This file is free software; the Free Software Foundation gives
+# unlimited permission to copy and/or distribute it, with or without
+# modifications, as long as this notice is preserved.
+
+# serial 6 ltoptions.m4
+
+# This is to help aclocal find these macros, as it can't see m4_define.
+AC_DEFUN([LTOPTIONS_VERSION], [m4_if([1])])
+
+
+# _LT_MANGLE_OPTION(MACRO-NAME, OPTION-NAME)
+# ------------------------------------------
+m4_define([_LT_MANGLE_OPTION],
+[[_LT_OPTION_]m4_bpatsubst($1__$2, [[^a-zA-Z0-9_]], [_])])
+
+
+# _LT_SET_OPTION(MACRO-NAME, OPTION-NAME)
+# ---------------------------------------
+# Set option OPTION-NAME for macro MACRO-NAME, and if there is a
+# matching handler defined, dispatch to it. Other OPTION-NAMEs are
+# saved as a flag.
+m4_define([_LT_SET_OPTION],
+[m4_define(_LT_MANGLE_OPTION([$1], [$2]))dnl
+m4_ifdef(_LT_MANGLE_DEFUN([$1], [$2]),
+ _LT_MANGLE_DEFUN([$1], [$2]),
+ [m4_warning([Unknown $1 option `$2'])])[]dnl
+])
+
+
+# _LT_IF_OPTION(MACRO-NAME, OPTION-NAME, IF-SET, [IF-NOT-SET])
+# ------------------------------------------------------------
+# Execute IF-SET if OPTION is set, IF-NOT-SET otherwise.
+m4_define([_LT_IF_OPTION],
+[m4_ifdef(_LT_MANGLE_OPTION([$1], [$2]), [$3], [$4])])
+
+
+# _LT_UNLESS_OPTIONS(MACRO-NAME, OPTION-LIST, IF-NOT-SET)
+# -------------------------------------------------------
+# Execute IF-NOT-SET unless all options in OPTION-LIST for MACRO-NAME
+# are set.
+m4_define([_LT_UNLESS_OPTIONS],
+[m4_foreach([_LT_Option], m4_split(m4_normalize([$2])),
+ [m4_ifdef(_LT_MANGLE_OPTION([$1], _LT_Option),
+ [m4_define([$0_found])])])[]dnl
+m4_ifdef([$0_found], [m4_undefine([$0_found])], [$3
+])[]dnl
+])
+
+
+# _LT_SET_OPTIONS(MACRO-NAME, OPTION-LIST)
+# ----------------------------------------
+# OPTION-LIST is a space-separated list of Libtool options associated
+# with MACRO-NAME. If any OPTION has a matching handler declared with
+# LT_OPTION_DEFINE, dispatch to that macro; otherwise complain about
+# the unknown option and exit.
+m4_defun([_LT_SET_OPTIONS],
+[# Set options
+m4_foreach([_LT_Option], m4_split(m4_normalize([$2])),
+ [_LT_SET_OPTION([$1], _LT_Option)])
+
+m4_if([$1],[LT_INIT],[
+ dnl
+ dnl Simply set some default values (i.e off) if boolean options were not
+ dnl specified:
+ _LT_UNLESS_OPTIONS([LT_INIT], [dlopen], [enable_dlopen=no
+ ])
+ _LT_UNLESS_OPTIONS([LT_INIT], [win32-dll], [enable_win32_dll=no
+ ])
+ dnl
+ dnl If no reference was made to various pairs of opposing options, then
+ dnl we run the default mode handler for the pair. For example, if neither
+ dnl `shared' nor `disable-shared' was passed, we enable building of shared
+ dnl archives by default:
+ _LT_UNLESS_OPTIONS([LT_INIT], [shared disable-shared], [_LT_ENABLE_SHARED])
+ _LT_UNLESS_OPTIONS([LT_INIT], [static disable-static], [_LT_ENABLE_STATIC])
+ _LT_UNLESS_OPTIONS([LT_INIT], [pic-only no-pic], [_LT_WITH_PIC])
+ _LT_UNLESS_OPTIONS([LT_INIT], [fast-install disable-fast-install],
+ [_LT_ENABLE_FAST_INSTALL])
+ ])
+])# _LT_SET_OPTIONS
+
+
+
+# _LT_MANGLE_DEFUN(MACRO-NAME, OPTION-NAME)
+# -----------------------------------------
+m4_define([_LT_MANGLE_DEFUN],
+[[_LT_OPTION_DEFUN_]m4_bpatsubst(m4_toupper([$1__$2]), [[^A-Z0-9_]], [_])])
+
+
+# LT_OPTION_DEFINE(MACRO-NAME, OPTION-NAME, CODE)
+# -----------------------------------------------
+m4_define([LT_OPTION_DEFINE],
+[m4_define(_LT_MANGLE_DEFUN([$1], [$2]), [$3])[]dnl
+])# LT_OPTION_DEFINE
+
+
+# dlopen
+# ------
+LT_OPTION_DEFINE([LT_INIT], [dlopen], [enable_dlopen=yes
+])
+
+AU_DEFUN([AC_LIBTOOL_DLOPEN],
+[_LT_SET_OPTION([LT_INIT], [dlopen])
+AC_DIAGNOSE([obsolete],
+[$0: Remove this warning and the call to _LT_SET_OPTION when you
+put the `dlopen' option into LT_INIT's first parameter.])
+])
+
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LIBTOOL_DLOPEN], [])
+
+
+# win32-dll
+# ---------
+# Declare package support for building win32 dll's.
+LT_OPTION_DEFINE([LT_INIT], [win32-dll],
+[enable_win32_dll=yes
+
+case $host in
+*-*-cygwin* | *-*-mingw* | *-*-pw32* | *-cegcc*)
+ AC_CHECK_TOOL(AS, as, false)
+ AC_CHECK_TOOL(DLLTOOL, dlltool, false)
+ AC_CHECK_TOOL(OBJDUMP, objdump, false)
+ ;;
+esac
+
+test -z "$AS" && AS=as
+_LT_DECL([], [AS], [0], [Assembler program])dnl
+
+test -z "$DLLTOOL" && DLLTOOL=dlltool
+_LT_DECL([], [DLLTOOL], [0], [DLL creation program])dnl
+
+test -z "$OBJDUMP" && OBJDUMP=objdump
+_LT_DECL([], [OBJDUMP], [0], [Object dumper program])dnl
+])# win32-dll
+
+AU_DEFUN([AC_LIBTOOL_WIN32_DLL],
+[AC_REQUIRE([AC_CANONICAL_HOST])dnl
+_LT_SET_OPTION([LT_INIT], [win32-dll])
+AC_DIAGNOSE([obsolete],
+[$0: Remove this warning and the call to _LT_SET_OPTION when you
+put the `win32-dll' option into LT_INIT's first parameter.])
+])
+
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LIBTOOL_WIN32_DLL], [])
+
+
+# _LT_ENABLE_SHARED([DEFAULT])
+# ----------------------------
+# implement the --enable-shared flag, and supports the `shared' and
+# `disable-shared' LT_INIT options.
+# DEFAULT is either `yes' or `no'. If omitted, it defaults to `yes'.
+m4_define([_LT_ENABLE_SHARED],
+[m4_define([_LT_ENABLE_SHARED_DEFAULT], [m4_if($1, no, no, yes)])dnl
+AC_ARG_ENABLE([shared],
+ [AS_HELP_STRING([--enable-shared@<:@=PKGS@:>@],
+ [build shared libraries @<:@default=]_LT_ENABLE_SHARED_DEFAULT[@:>@])],
+ [p=${PACKAGE-default}
+ case $enableval in
+ yes) enable_shared=yes ;;
+ no) enable_shared=no ;;
+ *)
+ enable_shared=no
+ # Look at the argument we got. We use all the common list separators.
+ lt_save_ifs="$IFS"; IFS="${IFS}$PATH_SEPARATOR,"
+ for pkg in $enableval; do
+ IFS="$lt_save_ifs"
+ if test "X$pkg" = "X$p"; then
+ enable_shared=yes
+ fi
+ done
+ IFS="$lt_save_ifs"
+ ;;
+ esac],
+ [enable_shared=]_LT_ENABLE_SHARED_DEFAULT)
+
+ _LT_DECL([build_libtool_libs], [enable_shared], [0],
+ [Whether or not to build shared libraries])
+])# _LT_ENABLE_SHARED
+
+LT_OPTION_DEFINE([LT_INIT], [shared], [_LT_ENABLE_SHARED([yes])])
+LT_OPTION_DEFINE([LT_INIT], [disable-shared], [_LT_ENABLE_SHARED([no])])
+
+# Old names:
+AC_DEFUN([AC_ENABLE_SHARED],
+[_LT_SET_OPTION([LT_INIT], m4_if([$1], [no], [disable-])[shared])
+])
+
+AC_DEFUN([AC_DISABLE_SHARED],
+[_LT_SET_OPTION([LT_INIT], [disable-shared])
+])
+
+AU_DEFUN([AM_ENABLE_SHARED], [AC_ENABLE_SHARED($@)])
+AU_DEFUN([AM_DISABLE_SHARED], [AC_DISABLE_SHARED($@)])
+
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AM_ENABLE_SHARED], [])
+dnl AC_DEFUN([AM_DISABLE_SHARED], [])
+
+
+
+# _LT_ENABLE_STATIC([DEFAULT])
+# ----------------------------
+# implement the --enable-static flag, and support the `static' and
+# `disable-static' LT_INIT options.
+# DEFAULT is either `yes' or `no'. If omitted, it defaults to `yes'.
+m4_define([_LT_ENABLE_STATIC],
+[m4_define([_LT_ENABLE_STATIC_DEFAULT], [m4_if($1, no, no, yes)])dnl
+AC_ARG_ENABLE([static],
+ [AS_HELP_STRING([--enable-static@<:@=PKGS@:>@],
+ [build static libraries @<:@default=]_LT_ENABLE_STATIC_DEFAULT[@:>@])],
+ [p=${PACKAGE-default}
+ case $enableval in
+ yes) enable_static=yes ;;
+ no) enable_static=no ;;
+ *)
+ enable_static=no
+ # Look at the argument we got. We use all the common list separators.
+ lt_save_ifs="$IFS"; IFS="${IFS}$PATH_SEPARATOR,"
+ for pkg in $enableval; do
+ IFS="$lt_save_ifs"
+ if test "X$pkg" = "X$p"; then
+ enable_static=yes
+ fi
+ done
+ IFS="$lt_save_ifs"
+ ;;
+ esac],
+ [enable_static=]_LT_ENABLE_STATIC_DEFAULT)
+
+ _LT_DECL([build_old_libs], [enable_static], [0],
+ [Whether or not to build static libraries])
+])# _LT_ENABLE_STATIC
+
+LT_OPTION_DEFINE([LT_INIT], [static], [_LT_ENABLE_STATIC([yes])])
+LT_OPTION_DEFINE([LT_INIT], [disable-static], [_LT_ENABLE_STATIC([no])])
+
+# Old names:
+AC_DEFUN([AC_ENABLE_STATIC],
+[_LT_SET_OPTION([LT_INIT], m4_if([$1], [no], [disable-])[static])
+])
+
+AC_DEFUN([AC_DISABLE_STATIC],
+[_LT_SET_OPTION([LT_INIT], [disable-static])
+])
+
+AU_DEFUN([AM_ENABLE_STATIC], [AC_ENABLE_STATIC($@)])
+AU_DEFUN([AM_DISABLE_STATIC], [AC_DISABLE_STATIC($@)])
+
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AM_ENABLE_STATIC], [])
+dnl AC_DEFUN([AM_DISABLE_STATIC], [])
+
+
+
+# _LT_ENABLE_FAST_INSTALL([DEFAULT])
+# ----------------------------------
+# implement the --enable-fast-install flag, and support the `fast-install'
+# and `disable-fast-install' LT_INIT options.
+# DEFAULT is either `yes' or `no'. If omitted, it defaults to `yes'.
+m4_define([_LT_ENABLE_FAST_INSTALL],
+[m4_define([_LT_ENABLE_FAST_INSTALL_DEFAULT], [m4_if($1, no, no, yes)])dnl
+AC_ARG_ENABLE([fast-install],
+ [AS_HELP_STRING([--enable-fast-install@<:@=PKGS@:>@],
+ [optimize for fast installation @<:@default=]_LT_ENABLE_FAST_INSTALL_DEFAULT[@:>@])],
+ [p=${PACKAGE-default}
+ case $enableval in
+ yes) enable_fast_install=yes ;;
+ no) enable_fast_install=no ;;
+ *)
+ enable_fast_install=no
+ # Look at the argument we got. We use all the common list separators.
+ lt_save_ifs="$IFS"; IFS="${IFS}$PATH_SEPARATOR,"
+ for pkg in $enableval; do
+ IFS="$lt_save_ifs"
+ if test "X$pkg" = "X$p"; then
+ enable_fast_install=yes
+ fi
+ done
+ IFS="$lt_save_ifs"
+ ;;
+ esac],
+ [enable_fast_install=]_LT_ENABLE_FAST_INSTALL_DEFAULT)
+
+_LT_DECL([fast_install], [enable_fast_install], [0],
+ [Whether or not to optimize for fast installation])dnl
+])# _LT_ENABLE_FAST_INSTALL
+
+LT_OPTION_DEFINE([LT_INIT], [fast-install], [_LT_ENABLE_FAST_INSTALL([yes])])
+LT_OPTION_DEFINE([LT_INIT], [disable-fast-install], [_LT_ENABLE_FAST_INSTALL([no])])
+
+# Old names:
+AU_DEFUN([AC_ENABLE_FAST_INSTALL],
+[_LT_SET_OPTION([LT_INIT], m4_if([$1], [no], [disable-])[fast-install])
+AC_DIAGNOSE([obsolete],
+[$0: Remove this warning and the call to _LT_SET_OPTION when you put
+the `fast-install' option into LT_INIT's first parameter.])
+])
+
+AU_DEFUN([AC_DISABLE_FAST_INSTALL],
+[_LT_SET_OPTION([LT_INIT], [disable-fast-install])
+AC_DIAGNOSE([obsolete],
+[$0: Remove this warning and the call to _LT_SET_OPTION when you put
+the `disable-fast-install' option into LT_INIT's first parameter.])
+])
+
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_ENABLE_FAST_INSTALL], [])
+dnl AC_DEFUN([AM_DISABLE_FAST_INSTALL], [])
+
+
+# _LT_WITH_PIC([MODE])
+# --------------------
+# implement the --with-pic flag, and support the `pic-only' and `no-pic'
+# LT_INIT options.
+# MODE is either `yes' or `no'. If omitted, it defaults to `both'.
+m4_define([_LT_WITH_PIC],
+[AC_ARG_WITH([pic],
+ [AS_HELP_STRING([--with-pic],
+ [try to use only PIC/non-PIC objects @<:@default=use both@:>@])],
+ [pic_mode="$withval"],
+ [pic_mode=default])
+
+test -z "$pic_mode" && pic_mode=m4_default([$1], [default])
+
+_LT_DECL([], [pic_mode], [0], [What type of objects to build])dnl
+])# _LT_WITH_PIC
+
+LT_OPTION_DEFINE([LT_INIT], [pic-only], [_LT_WITH_PIC([yes])])
+LT_OPTION_DEFINE([LT_INIT], [no-pic], [_LT_WITH_PIC([no])])
+
+# Old name:
+AU_DEFUN([AC_LIBTOOL_PICMODE],
+[_LT_SET_OPTION([LT_INIT], [pic-only])
+AC_DIAGNOSE([obsolete],
+[$0: Remove this warning and the call to _LT_SET_OPTION when you
+put the `pic-only' option into LT_INIT's first parameter.])
+])
+
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LIBTOOL_PICMODE], [])
+
+
+m4_define([_LTDL_MODE], [])
+LT_OPTION_DEFINE([LTDL_INIT], [nonrecursive],
+ [m4_define([_LTDL_MODE], [nonrecursive])])
+LT_OPTION_DEFINE([LTDL_INIT], [recursive],
+ [m4_define([_LTDL_MODE], [recursive])])
+LT_OPTION_DEFINE([LTDL_INIT], [subproject],
+ [m4_define([_LTDL_MODE], [subproject])])
+
+m4_define([_LTDL_TYPE], [])
+LT_OPTION_DEFINE([LTDL_INIT], [installable],
+ [m4_define([_LTDL_TYPE], [installable])])
+LT_OPTION_DEFINE([LTDL_INIT], [convenience],
+ [m4_define([_LTDL_TYPE], [convenience])])
+
+# ltsugar.m4 -- libtool m4 base layer. -*-Autoconf-*-
+#
+# Copyright (C) 2004, 2005, 2007, 2008 Free Software Foundation, Inc.
+# Written by Gary V. Vaughan, 2004
+#
+# This file is free software; the Free Software Foundation gives
+# unlimited permission to copy and/or distribute it, with or without
+# modifications, as long as this notice is preserved.
+
+# serial 6 ltsugar.m4
+
+# This is to help aclocal find these macros, as it can't see m4_define.
+AC_DEFUN([LTSUGAR_VERSION], [m4_if([0.1])])
+
+
+# lt_join(SEP, ARG1, [ARG2...])
+# -----------------------------
+# Produce ARG1SEPARG2...SEPARGn, omitting [] arguments and their
+# associated separator.
+# Needed until we can rely on m4_join from Autoconf 2.62, since all earlier
+# versions in m4sugar had bugs.
+m4_define([lt_join],
+[m4_if([$#], [1], [],
+ [$#], [2], [[$2]],
+ [m4_if([$2], [], [], [[$2]_])$0([$1], m4_shift(m4_shift($@)))])])
+m4_define([_lt_join],
+[m4_if([$#$2], [2], [],
+ [m4_if([$2], [], [], [[$1$2]])$0([$1], m4_shift(m4_shift($@)))])])
+
+
+# lt_car(LIST)
+# lt_cdr(LIST)
+# ------------
+# Manipulate m4 lists.
+# These macros are necessary as long as will still need to support
+# Autoconf-2.59 which quotes differently.
+m4_define([lt_car], [[$1]])
+m4_define([lt_cdr],
+[m4_if([$#], 0, [m4_fatal([$0: cannot be called without arguments])],
+ [$#], 1, [],
+ [m4_dquote(m4_shift($@))])])
+m4_define([lt_unquote], $1)
+
+
+# lt_append(MACRO-NAME, STRING, [SEPARATOR])
+# ------------------------------------------
+# Redefine MACRO-NAME to hold its former content plus `SEPARATOR'`STRING'.
+# Note that neither SEPARATOR nor STRING are expanded; they are appended
+# to MACRO-NAME as is (leaving the expansion for when MACRO-NAME is invoked).
+# No SEPARATOR is output if MACRO-NAME was previously undefined (different
+# than defined and empty).
+#
+# This macro is needed until we can rely on Autoconf 2.62, since earlier
+# versions of m4sugar mistakenly expanded SEPARATOR but not STRING.
+m4_define([lt_append],
+[m4_define([$1],
+ m4_ifdef([$1], [m4_defn([$1])[$3]])[$2])])
+
+
+
+# lt_combine(SEP, PREFIX-LIST, INFIX, SUFFIX1, [SUFFIX2...])
+# ----------------------------------------------------------
+# Produce a SEP delimited list of all paired combinations of elements of
+# PREFIX-LIST with SUFFIX1 through SUFFIXn. Each element of the list
+# has the form PREFIXmINFIXSUFFIXn.
+# Needed until we can rely on m4_combine added in Autoconf 2.62.
+m4_define([lt_combine],
+[m4_if(m4_eval([$# > 3]), [1],
+ [m4_pushdef([_Lt_sep], [m4_define([_Lt_sep], m4_defn([lt_car]))])]]dnl
+[[m4_foreach([_Lt_prefix], [$2],
+ [m4_foreach([_Lt_suffix],
+ ]m4_dquote(m4_dquote(m4_shift(m4_shift(m4_shift($@)))))[,
+ [_Lt_sep([$1])[]m4_defn([_Lt_prefix])[$3]m4_defn([_Lt_suffix])])])])])
+
+
+# lt_if_append_uniq(MACRO-NAME, VARNAME, [SEPARATOR], [UNIQ], [NOT-UNIQ])
+# -----------------------------------------------------------------------
+# Iff MACRO-NAME does not yet contain VARNAME, then append it (delimited
+# by SEPARATOR if supplied) and expand UNIQ, else NOT-UNIQ.
+m4_define([lt_if_append_uniq],
+[m4_ifdef([$1],
+ [m4_if(m4_index([$3]m4_defn([$1])[$3], [$3$2$3]), [-1],
+ [lt_append([$1], [$2], [$3])$4],
+ [$5])],
+ [lt_append([$1], [$2], [$3])$4])])
+
+
+# lt_dict_add(DICT, KEY, VALUE)
+# -----------------------------
+m4_define([lt_dict_add],
+[m4_define([$1($2)], [$3])])
+
+
+# lt_dict_add_subkey(DICT, KEY, SUBKEY, VALUE)
+# --------------------------------------------
+m4_define([lt_dict_add_subkey],
+[m4_define([$1($2:$3)], [$4])])
+
+
+# lt_dict_fetch(DICT, KEY, [SUBKEY])
+# ----------------------------------
+m4_define([lt_dict_fetch],
+[m4_ifval([$3],
+ m4_ifdef([$1($2:$3)], [m4_defn([$1($2:$3)])]),
+ m4_ifdef([$1($2)], [m4_defn([$1($2)])]))])
+
+
+# lt_if_dict_fetch(DICT, KEY, [SUBKEY], VALUE, IF-TRUE, [IF-FALSE])
+# -----------------------------------------------------------------
+m4_define([lt_if_dict_fetch],
+[m4_if(lt_dict_fetch([$1], [$2], [$3]), [$4],
+ [$5],
+ [$6])])
+
+
+# lt_dict_filter(DICT, [SUBKEY], VALUE, [SEPARATOR], KEY, [...])
+# --------------------------------------------------------------
+m4_define([lt_dict_filter],
+[m4_if([$5], [], [],
+ [lt_join(m4_quote(m4_default([$4], [[, ]])),
+ lt_unquote(m4_split(m4_normalize(m4_foreach(_Lt_key, lt_car([m4_shiftn(4, $@)]),
+ [lt_if_dict_fetch([$1], _Lt_key, [$2], [$3], [_Lt_key ])])))))])[]dnl
+])
+
+# ltversion.m4 -- version numbers -*- Autoconf -*-
+#
+# Copyright (C) 2004 Free Software Foundation, Inc.
+# Written by Scott James Remnant, 2004
+#
+# This file is free software; the Free Software Foundation gives
+# unlimited permission to copy and/or distribute it, with or without
+# modifications, as long as this notice is preserved.
+
+# Generated from ltversion.in.
+
+# serial 3017 ltversion.m4
+# This file is part of GNU Libtool
+
+m4_define([LT_PACKAGE_VERSION], [2.2.6b])
+m4_define([LT_PACKAGE_REVISION], [1.3017])
+
+AC_DEFUN([LTVERSION_VERSION],
+[macro_version='2.2.6b'
+macro_revision='1.3017'
+_LT_DECL(, macro_version, 0, [Which release of libtool.m4 was used?])
+_LT_DECL(, macro_revision, 0)
+])
+
+# lt~obsolete.m4 -- aclocal satisfying obsolete definitions. -*-Autoconf-*-
+#
+# Copyright (C) 2004, 2005, 2007 Free Software Foundation, Inc.
+# Written by Scott James Remnant, 2004.
+#
+# This file is free software; the Free Software Foundation gives
+# unlimited permission to copy and/or distribute it, with or without
+# modifications, as long as this notice is preserved.
+
+# serial 4 lt~obsolete.m4
+
+# These exist entirely to fool aclocal when bootstrapping libtool.
+#
+# In the past libtool.m4 has provided macros via AC_DEFUN (or AU_DEFUN)
+# which have later been changed to m4_define as they aren't part of the
+# exported API, or moved to Autoconf or Automake where they belong.
+#
+# The trouble is, aclocal is a bit thick. It'll see the old AC_DEFUN
+# in /usr/share/aclocal/libtool.m4 and remember it, then when it sees us
+# using a macro with the same name in our local m4/libtool.m4 it'll
+# pull the old libtool.m4 in (it doesn't see our shiny new m4_define
+# and doesn't know about Autoconf macros at all.)
+#
+# So we provide this file, which has a silly filename so it's always
+# included after everything else. This provides aclocal with the
+# AC_DEFUNs it wants, but when m4 processes it, it doesn't do anything
+# because those macros already exist, or will be overwritten later.
+# We use AC_DEFUN over AU_DEFUN for compatibility with aclocal-1.6.
+#
+# Anytime we withdraw an AC_DEFUN or AU_DEFUN, remember to add it here.
+# Yes, that means every name once taken will need to remain here until
+# we give up compatibility with versions before 1.7, at which point
+# we need to keep only those names which we still refer to.
+
+# This is to help aclocal find these macros, as it can't see m4_define.
+AC_DEFUN([LTOBSOLETE_VERSION], [m4_if([1])])
+
+m4_ifndef([AC_LIBTOOL_LINKER_OPTION], [AC_DEFUN([AC_LIBTOOL_LINKER_OPTION])])
+m4_ifndef([AC_PROG_EGREP], [AC_DEFUN([AC_PROG_EGREP])])
+m4_ifndef([_LT_AC_PROG_ECHO_BACKSLASH], [AC_DEFUN([_LT_AC_PROG_ECHO_BACKSLASH])])
+m4_ifndef([_LT_AC_SHELL_INIT], [AC_DEFUN([_LT_AC_SHELL_INIT])])
+m4_ifndef([_LT_AC_SYS_LIBPATH_AIX], [AC_DEFUN([_LT_AC_SYS_LIBPATH_AIX])])
+m4_ifndef([_LT_PROG_LTMAIN], [AC_DEFUN([_LT_PROG_LTMAIN])])
+m4_ifndef([_LT_AC_TAGVAR], [AC_DEFUN([_LT_AC_TAGVAR])])
+m4_ifndef([AC_LTDL_ENABLE_INSTALL], [AC_DEFUN([AC_LTDL_ENABLE_INSTALL])])
+m4_ifndef([AC_LTDL_PREOPEN], [AC_DEFUN([AC_LTDL_PREOPEN])])
+m4_ifndef([_LT_AC_SYS_COMPILER], [AC_DEFUN([_LT_AC_SYS_COMPILER])])
+m4_ifndef([_LT_AC_LOCK], [AC_DEFUN([_LT_AC_LOCK])])
+m4_ifndef([AC_LIBTOOL_SYS_OLD_ARCHIVE], [AC_DEFUN([AC_LIBTOOL_SYS_OLD_ARCHIVE])])
+m4_ifndef([_LT_AC_TRY_DLOPEN_SELF], [AC_DEFUN([_LT_AC_TRY_DLOPEN_SELF])])
+m4_ifndef([AC_LIBTOOL_PROG_CC_C_O], [AC_DEFUN([AC_LIBTOOL_PROG_CC_C_O])])
+m4_ifndef([AC_LIBTOOL_SYS_HARD_LINK_LOCKS], [AC_DEFUN([AC_LIBTOOL_SYS_HARD_LINK_LOCKS])])
+m4_ifndef([AC_LIBTOOL_OBJDIR], [AC_DEFUN([AC_LIBTOOL_OBJDIR])])
+m4_ifndef([AC_LTDL_OBJDIR], [AC_DEFUN([AC_LTDL_OBJDIR])])
+m4_ifndef([AC_LIBTOOL_PROG_LD_HARDCODE_LIBPATH], [AC_DEFUN([AC_LIBTOOL_PROG_LD_HARDCODE_LIBPATH])])
+m4_ifndef([AC_LIBTOOL_SYS_LIB_STRIP], [AC_DEFUN([AC_LIBTOOL_SYS_LIB_STRIP])])
+m4_ifndef([AC_PATH_MAGIC], [AC_DEFUN([AC_PATH_MAGIC])])
+m4_ifndef([AC_PROG_LD_GNU], [AC_DEFUN([AC_PROG_LD_GNU])])
+m4_ifndef([AC_PROG_LD_RELOAD_FLAG], [AC_DEFUN([AC_PROG_LD_RELOAD_FLAG])])
+m4_ifndef([AC_DEPLIBS_CHECK_METHOD], [AC_DEFUN([AC_DEPLIBS_CHECK_METHOD])])
+m4_ifndef([AC_LIBTOOL_PROG_COMPILER_NO_RTTI], [AC_DEFUN([AC_LIBTOOL_PROG_COMPILER_NO_RTTI])])
+m4_ifndef([AC_LIBTOOL_SYS_GLOBAL_SYMBOL_PIPE], [AC_DEFUN([AC_LIBTOOL_SYS_GLOBAL_SYMBOL_PIPE])])
+m4_ifndef([AC_LIBTOOL_PROG_COMPILER_PIC], [AC_DEFUN([AC_LIBTOOL_PROG_COMPILER_PIC])])
+m4_ifndef([AC_LIBTOOL_PROG_LD_SHLIBS], [AC_DEFUN([AC_LIBTOOL_PROG_LD_SHLIBS])])
+m4_ifndef([AC_LIBTOOL_POSTDEP_PREDEP], [AC_DEFUN([AC_LIBTOOL_POSTDEP_PREDEP])])
+m4_ifndef([LT_AC_PROG_EGREP], [AC_DEFUN([LT_AC_PROG_EGREP])])
+m4_ifndef([LT_AC_PROG_SED], [AC_DEFUN([LT_AC_PROG_SED])])
+m4_ifndef([_LT_CC_BASENAME], [AC_DEFUN([_LT_CC_BASENAME])])
+m4_ifndef([_LT_COMPILER_BOILERPLATE], [AC_DEFUN([_LT_COMPILER_BOILERPLATE])])
+m4_ifndef([_LT_LINKER_BOILERPLATE], [AC_DEFUN([_LT_LINKER_BOILERPLATE])])
+m4_ifndef([_AC_PROG_LIBTOOL], [AC_DEFUN([_AC_PROG_LIBTOOL])])
+m4_ifndef([AC_LIBTOOL_SETUP], [AC_DEFUN([AC_LIBTOOL_SETUP])])
+m4_ifndef([_LT_AC_CHECK_DLFCN], [AC_DEFUN([_LT_AC_CHECK_DLFCN])])
+m4_ifndef([AC_LIBTOOL_SYS_DYNAMIC_LINKER], [AC_DEFUN([AC_LIBTOOL_SYS_DYNAMIC_LINKER])])
+m4_ifndef([_LT_AC_TAGCONFIG], [AC_DEFUN([_LT_AC_TAGCONFIG])])
+m4_ifndef([AC_DISABLE_FAST_INSTALL], [AC_DEFUN([AC_DISABLE_FAST_INSTALL])])
+m4_ifndef([_LT_AC_LANG_CXX], [AC_DEFUN([_LT_AC_LANG_CXX])])
+m4_ifndef([_LT_AC_LANG_F77], [AC_DEFUN([_LT_AC_LANG_F77])])
+m4_ifndef([_LT_AC_LANG_GCJ], [AC_DEFUN([_LT_AC_LANG_GCJ])])
+m4_ifndef([AC_LIBTOOL_RC], [AC_DEFUN([AC_LIBTOOL_RC])])
+m4_ifndef([AC_LIBTOOL_LANG_C_CONFIG], [AC_DEFUN([AC_LIBTOOL_LANG_C_CONFIG])])
+m4_ifndef([_LT_AC_LANG_C_CONFIG], [AC_DEFUN([_LT_AC_LANG_C_CONFIG])])
+m4_ifndef([AC_LIBTOOL_LANG_CXX_CONFIG], [AC_DEFUN([AC_LIBTOOL_LANG_CXX_CONFIG])])
+m4_ifndef([_LT_AC_LANG_CXX_CONFIG], [AC_DEFUN([_LT_AC_LANG_CXX_CONFIG])])
+m4_ifndef([AC_LIBTOOL_LANG_F77_CONFIG], [AC_DEFUN([AC_LIBTOOL_LANG_F77_CONFIG])])
+m4_ifndef([_LT_AC_LANG_F77_CONFIG], [AC_DEFUN([_LT_AC_LANG_F77_CONFIG])])
+m4_ifndef([AC_LIBTOOL_LANG_GCJ_CONFIG], [AC_DEFUN([AC_LIBTOOL_LANG_GCJ_CONFIG])])
+m4_ifndef([_LT_AC_LANG_GCJ_CONFIG], [AC_DEFUN([_LT_AC_LANG_GCJ_CONFIG])])
+m4_ifndef([AC_LIBTOOL_LANG_RC_CONFIG], [AC_DEFUN([AC_LIBTOOL_LANG_RC_CONFIG])])
+m4_ifndef([_LT_AC_LANG_RC_CONFIG], [AC_DEFUN([_LT_AC_LANG_RC_CONFIG])])
+m4_ifndef([AC_LIBTOOL_CONFIG], [AC_DEFUN([AC_LIBTOOL_CONFIG])])
+m4_ifndef([_LT_AC_FILE_LTDLL_C], [AC_DEFUN([_LT_AC_FILE_LTDLL_C])])
+
+# Copyright (C) 2002, 2003, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# AM_AUTOMAKE_VERSION(VERSION)
+# ----------------------------
+# Automake X.Y traces this macro to ensure aclocal.m4 has been
+# generated from the m4 files accompanying Automake X.Y.
+# (This private macro should not be called outside this file.)
+AC_DEFUN([AM_AUTOMAKE_VERSION],
+[am__api_version='1.11'
+dnl Some users find AM_AUTOMAKE_VERSION and mistake it for a way to
+dnl require some minimum version. Point them to the right macro.
+m4_if([$1], [1.11], [],
+ [AC_FATAL([Do not call $0, use AM_INIT_AUTOMAKE([$1]).])])dnl
+])
+
+# _AM_AUTOCONF_VERSION(VERSION)
+# -----------------------------
+# aclocal traces this macro to find the Autoconf version.
+# This is a private macro too. Using m4_define simplifies
+# the logic in aclocal, which can simply ignore this definition.
+m4_define([_AM_AUTOCONF_VERSION], [])
+
+# AM_SET_CURRENT_AUTOMAKE_VERSION
+# -------------------------------
+# Call AM_AUTOMAKE_VERSION and AM_AUTOMAKE_VERSION so they can be traced.
+# This function is AC_REQUIREd by AM_INIT_AUTOMAKE.
+AC_DEFUN([AM_SET_CURRENT_AUTOMAKE_VERSION],
+[AM_AUTOMAKE_VERSION([1.11])dnl
+m4_ifndef([AC_AUTOCONF_VERSION],
+ [m4_copy([m4_PACKAGE_VERSION], [AC_AUTOCONF_VERSION])])dnl
+_AM_AUTOCONF_VERSION(m4_defn([AC_AUTOCONF_VERSION]))])
+
+# AM_AUX_DIR_EXPAND -*- Autoconf -*-
+
+# Copyright (C) 2001, 2003, 2005 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# For projects using AC_CONFIG_AUX_DIR([foo]), Autoconf sets
+# $ac_aux_dir to `$srcdir/foo'. In other projects, it is set to
+# `$srcdir', `$srcdir/..', or `$srcdir/../..'.
+#
+# Of course, Automake must honor this variable whenever it calls a
+# tool from the auxiliary directory. The problem is that $srcdir (and
+# therefore $ac_aux_dir as well) can be either absolute or relative,
+# depending on how configure is run. This is pretty annoying, since
+# it makes $ac_aux_dir quite unusable in subdirectories: in the top
+# source directory, any form will work fine, but in subdirectories a
+# relative path needs to be adjusted first.
+#
+# $ac_aux_dir/missing
+# fails when called from a subdirectory if $ac_aux_dir is relative
+# $top_srcdir/$ac_aux_dir/missing
+# fails if $ac_aux_dir is absolute,
+# fails when called from a subdirectory in a VPATH build with
+# a relative $ac_aux_dir
+#
+# The reason of the latter failure is that $top_srcdir and $ac_aux_dir
+# are both prefixed by $srcdir. In an in-source build this is usually
+# harmless because $srcdir is `.', but things will broke when you
+# start a VPATH build or use an absolute $srcdir.
+#
+# So we could use something similar to $top_srcdir/$ac_aux_dir/missing,
+# iff we strip the leading $srcdir from $ac_aux_dir. That would be:
+# am_aux_dir='\$(top_srcdir)/'`expr "$ac_aux_dir" : "$srcdir//*\(.*\)"`
+# and then we would define $MISSING as
+# MISSING="\${SHELL} $am_aux_dir/missing"
+# This will work as long as MISSING is not called from configure, because
+# unfortunately $(top_srcdir) has no meaning in configure.
+# However there are other variables, like CC, which are often used in
+# configure, and could therefore not use this "fixed" $ac_aux_dir.
+#
+# Another solution, used here, is to always expand $ac_aux_dir to an
+# absolute PATH. The drawback is that using absolute paths prevent a
+# configured tree to be moved without reconfiguration.
+
+AC_DEFUN([AM_AUX_DIR_EXPAND],
+[dnl Rely on autoconf to set up CDPATH properly.
+AC_PREREQ([2.50])dnl
+# expand $ac_aux_dir to an absolute path
+am_aux_dir=`cd $ac_aux_dir && pwd`
+])
+
+# AM_CONDITIONAL -*- Autoconf -*-
+
+# Copyright (C) 1997, 2000, 2001, 2003, 2004, 2005, 2006, 2008
+# Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 9
+
+# AM_CONDITIONAL(NAME, SHELL-CONDITION)
+# -------------------------------------
+# Define a conditional.
+AC_DEFUN([AM_CONDITIONAL],
+[AC_PREREQ(2.52)dnl
+ ifelse([$1], [TRUE], [AC_FATAL([$0: invalid condition: $1])],
+ [$1], [FALSE], [AC_FATAL([$0: invalid condition: $1])])dnl
+AC_SUBST([$1_TRUE])dnl
+AC_SUBST([$1_FALSE])dnl
+_AM_SUBST_NOTMAKE([$1_TRUE])dnl
+_AM_SUBST_NOTMAKE([$1_FALSE])dnl
+m4_define([_AM_COND_VALUE_$1], [$2])dnl
+if $2; then
+ $1_TRUE=
+ $1_FALSE='#'
+else
+ $1_TRUE='#'
+ $1_FALSE=
+fi
+AC_CONFIG_COMMANDS_PRE(
+[if test -z "${$1_TRUE}" && test -z "${$1_FALSE}"; then
+ AC_MSG_ERROR([[conditional "$1" was never defined.
+Usually this means the macro was only invoked conditionally.]])
+fi])])
+
+# Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2009
+# Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 10
+
+# There are a few dirty hacks below to avoid letting `AC_PROG_CC' be
+# written in clear, in which case automake, when reading aclocal.m4,
+# will think it sees a *use*, and therefore will trigger all it's
+# C support machinery. Also note that it means that autoscan, seeing
+# CC etc. in the Makefile, will ask for an AC_PROG_CC use...
+
+
+# _AM_DEPENDENCIES(NAME)
+# ----------------------
+# See how the compiler implements dependency checking.
+# NAME is "CC", "CXX", "GCJ", or "OBJC".
+# We try a few techniques and use that to set a single cache variable.
+#
+# We don't AC_REQUIRE the corresponding AC_PROG_CC since the latter was
+# modified to invoke _AM_DEPENDENCIES(CC); we would have a circular
+# dependency, and given that the user is not expected to run this macro,
+# just rely on AC_PROG_CC.
+AC_DEFUN([_AM_DEPENDENCIES],
+[AC_REQUIRE([AM_SET_DEPDIR])dnl
+AC_REQUIRE([AM_OUTPUT_DEPENDENCY_COMMANDS])dnl
+AC_REQUIRE([AM_MAKE_INCLUDE])dnl
+AC_REQUIRE([AM_DEP_TRACK])dnl
+
+ifelse([$1], CC, [depcc="$CC" am_compiler_list=],
+ [$1], CXX, [depcc="$CXX" am_compiler_list=],
+ [$1], OBJC, [depcc="$OBJC" am_compiler_list='gcc3 gcc'],
+ [$1], UPC, [depcc="$UPC" am_compiler_list=],
+ [$1], GCJ, [depcc="$GCJ" am_compiler_list='gcc3 gcc'],
+ [depcc="$$1" am_compiler_list=])
+
+AC_CACHE_CHECK([dependency style of $depcc],
+ [am_cv_$1_dependencies_compiler_type],
+[if test -z "$AMDEP_TRUE" && test -f "$am_depcomp"; then
+ # We make a subdir and do the tests there. Otherwise we can end up
+ # making bogus files that we don't know about and never remove. For
+ # instance it was reported that on HP-UX the gcc test will end up
+ # making a dummy file named `D' -- because `-MD' means `put the output
+ # in D'.
+ mkdir conftest.dir
+ # Copy depcomp to subdir because otherwise we won't find it if we're
+ # using a relative directory.
+ cp "$am_depcomp" conftest.dir
+ cd conftest.dir
+ # We will build objects and dependencies in a subdirectory because
+ # it helps to detect inapplicable dependency modes. For instance
+ # both Tru64's cc and ICC support -MD to output dependencies as a
+ # side effect of compilation, but ICC will put the dependencies in
+ # the current directory while Tru64 will put them in the object
+ # directory.
+ mkdir sub
+
+ am_cv_$1_dependencies_compiler_type=none
+ if test "$am_compiler_list" = ""; then
+ am_compiler_list=`sed -n ['s/^#*\([a-zA-Z0-9]*\))$/\1/p'] < ./depcomp`
+ fi
+ am__universal=false
+ m4_case([$1], [CC],
+ [case " $depcc " in #(
+ *\ -arch\ *\ -arch\ *) am__universal=true ;;
+ esac],
+ [CXX],
+ [case " $depcc " in #(
+ *\ -arch\ *\ -arch\ *) am__universal=true ;;
+ esac])
+
+ for depmode in $am_compiler_list; do
+ # Setup a source with many dependencies, because some compilers
+ # like to wrap large dependency lists on column 80 (with \), and
+ # we should not choose a depcomp mode which is confused by this.
+ #
+ # We need to recreate these files for each test, as the compiler may
+ # overwrite some of them when testing with obscure command lines.
+ # This happens at least with the AIX C compiler.
+ : > sub/conftest.c
+ for i in 1 2 3 4 5 6; do
+ echo '#include "conftst'$i'.h"' >> sub/conftest.c
+ # Using `: > sub/conftst$i.h' creates only sub/conftst1.h with
+ # Solaris 8's {/usr,}/bin/sh.
+ touch sub/conftst$i.h
+ done
+ echo "${am__include} ${am__quote}sub/conftest.Po${am__quote}" > confmf
+
+ # We check with `-c' and `-o' for the sake of the "dashmstdout"
+ # mode. It turns out that the SunPro C++ compiler does not properly
+ # handle `-M -o', and we need to detect this. Also, some Intel
+ # versions had trouble with output in subdirs
+ am__obj=sub/conftest.${OBJEXT-o}
+ am__minus_obj="-o $am__obj"
+ case $depmode in
+ gcc)
+ # This depmode causes a compiler race in universal mode.
+ test "$am__universal" = false || continue
+ ;;
+ nosideeffect)
+ # after this tag, mechanisms are not by side-effect, so they'll
+ # only be used when explicitly requested
+ if test "x$enable_dependency_tracking" = xyes; then
+ continue
+ else
+ break
+ fi
+ ;;
+ msvisualcpp | msvcmsys)
+ # This compiler won't grok `-c -o', but also, the minuso test has
+ # not run yet. These depmodes are late enough in the game, and
+ # so weak that their functioning should not be impacted.
+ am__obj=conftest.${OBJEXT-o}
+ am__minus_obj=
+ ;;
+ none) break ;;
+ esac
+ if depmode=$depmode \
+ source=sub/conftest.c object=$am__obj \
+ depfile=sub/conftest.Po tmpdepfile=sub/conftest.TPo \
+ $SHELL ./depcomp $depcc -c $am__minus_obj sub/conftest.c \
+ >/dev/null 2>conftest.err &&
+ grep sub/conftst1.h sub/conftest.Po > /dev/null 2>&1 &&
+ grep sub/conftst6.h sub/conftest.Po > /dev/null 2>&1 &&
+ grep $am__obj sub/conftest.Po > /dev/null 2>&1 &&
+ ${MAKE-make} -s -f confmf > /dev/null 2>&1; then
+ # icc doesn't choke on unknown options, it will just issue warnings
+ # or remarks (even with -Werror). So we grep stderr for any message
+ # that says an option was ignored or not supported.
+ # When given -MP, icc 7.0 and 7.1 complain thusly:
+ # icc: Command line warning: ignoring option '-M'; no argument required
+ # The diagnosis changed in icc 8.0:
+ # icc: Command line remark: option '-MP' not supported
+ if (grep 'ignoring option' conftest.err ||
+ grep 'not supported' conftest.err) >/dev/null 2>&1; then :; else
+ am_cv_$1_dependencies_compiler_type=$depmode
+ break
+ fi
+ fi
+ done
+
+ cd ..
+ rm -rf conftest.dir
+else
+ am_cv_$1_dependencies_compiler_type=none
+fi
+])
+AC_SUBST([$1DEPMODE], [depmode=$am_cv_$1_dependencies_compiler_type])
+AM_CONDITIONAL([am__fastdep$1], [
+ test "x$enable_dependency_tracking" != xno \
+ && test "$am_cv_$1_dependencies_compiler_type" = gcc3])
+])
+
+
+# AM_SET_DEPDIR
+# -------------
+# Choose a directory name for dependency files.
+# This macro is AC_REQUIREd in _AM_DEPENDENCIES
+AC_DEFUN([AM_SET_DEPDIR],
+[AC_REQUIRE([AM_SET_LEADING_DOT])dnl
+AC_SUBST([DEPDIR], ["${am__leading_dot}deps"])dnl
+])
+
+
+# AM_DEP_TRACK
+# ------------
+AC_DEFUN([AM_DEP_TRACK],
+[AC_ARG_ENABLE(dependency-tracking,
+[ --disable-dependency-tracking speeds up one-time build
+ --enable-dependency-tracking do not reject slow dependency extractors])
+if test "x$enable_dependency_tracking" != xno; then
+ am_depcomp="$ac_aux_dir/depcomp"
+ AMDEPBACKSLASH='\'
+fi
+AM_CONDITIONAL([AMDEP], [test "x$enable_dependency_tracking" != xno])
+AC_SUBST([AMDEPBACKSLASH])dnl
+_AM_SUBST_NOTMAKE([AMDEPBACKSLASH])dnl
+])
+
+# Generate code to set up dependency tracking. -*- Autoconf -*-
+
+# Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2008
+# Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+#serial 5
+
+# _AM_OUTPUT_DEPENDENCY_COMMANDS
+# ------------------------------
+AC_DEFUN([_AM_OUTPUT_DEPENDENCY_COMMANDS],
+[{
+ # Autoconf 2.62 quotes --file arguments for eval, but not when files
+ # are listed without --file. Let's play safe and only enable the eval
+ # if we detect the quoting.
+ case $CONFIG_FILES in
+ *\'*) eval set x "$CONFIG_FILES" ;;
+ *) set x $CONFIG_FILES ;;
+ esac
+ shift
+ for mf
+ do
+ # Strip MF so we end up with the name of the file.
+ mf=`echo "$mf" | sed -e 's/:.*$//'`
+ # Check whether this is an Automake generated Makefile or not.
+ # We used to match only the files named `Makefile.in', but
+ # some people rename them; so instead we look at the file content.
+ # Grep'ing the first line is not enough: some people post-process
+ # each Makefile.in and add a new line on top of each file to say so.
+ # Grep'ing the whole file is not good either: AIX grep has a line
+ # limit of 2048, but all sed's we know have understand at least 4000.
+ if sed -n 's,^#.*generated by automake.*,X,p' "$mf" | grep X >/dev/null 2>&1; then
+ dirpart=`AS_DIRNAME("$mf")`
+ else
+ continue
+ fi
+ # Extract the definition of DEPDIR, am__include, and am__quote
+ # from the Makefile without running `make'.
+ DEPDIR=`sed -n 's/^DEPDIR = //p' < "$mf"`
+ test -z "$DEPDIR" && continue
+ am__include=`sed -n 's/^am__include = //p' < "$mf"`
+ test -z "am__include" && continue
+ am__quote=`sed -n 's/^am__quote = //p' < "$mf"`
+ # When using ansi2knr, U may be empty or an underscore; expand it
+ U=`sed -n 's/^U = //p' < "$mf"`
+ # Find all dependency output files, they are included files with
+ # $(DEPDIR) in their names. We invoke sed twice because it is the
+ # simplest approach to changing $(DEPDIR) to its actual value in the
+ # expansion.
+ for file in `sed -n "
+ s/^$am__include $am__quote\(.*(DEPDIR).*\)$am__quote"'$/\1/p' <"$mf" | \
+ sed -e 's/\$(DEPDIR)/'"$DEPDIR"'/g' -e 's/\$U/'"$U"'/g'`; do
+ # Make sure the directory exists.
+ test -f "$dirpart/$file" && continue
+ fdir=`AS_DIRNAME(["$file"])`
+ AS_MKDIR_P([$dirpart/$fdir])
+ # echo "creating $dirpart/$file"
+ echo '# dummy' > "$dirpart/$file"
+ done
+ done
+}
+])# _AM_OUTPUT_DEPENDENCY_COMMANDS
+
+
+# AM_OUTPUT_DEPENDENCY_COMMANDS
+# -----------------------------
+# This macro should only be invoked once -- use via AC_REQUIRE.
+#
+# This code is only required when automatic dependency tracking
+# is enabled. FIXME. This creates each `.P' file that we will
+# need in order to bootstrap the dependency handling code.
+AC_DEFUN([AM_OUTPUT_DEPENDENCY_COMMANDS],
+[AC_CONFIG_COMMANDS([depfiles],
+ [test x"$AMDEP_TRUE" != x"" || _AM_OUTPUT_DEPENDENCY_COMMANDS],
+ [AMDEP_TRUE="$AMDEP_TRUE" ac_aux_dir="$ac_aux_dir"])
+])
+
+# Copyright (C) 1996, 1997, 2000, 2001, 2003, 2005
+# Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 8
+
+# AM_CONFIG_HEADER is obsolete. It has been replaced by AC_CONFIG_HEADERS.
+AU_DEFUN([AM_CONFIG_HEADER], [AC_CONFIG_HEADERS($@)])
+
+# Do all the work for Automake. -*- Autoconf -*-
+
+# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
+# 2005, 2006, 2008, 2009 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 16
+
+# This macro actually does too much. Some checks are only needed if
+# your package does certain things. But this isn't really a big deal.
+
+# AM_INIT_AUTOMAKE(PACKAGE, VERSION, [NO-DEFINE])
+# AM_INIT_AUTOMAKE([OPTIONS])
+# -----------------------------------------------
+# The call with PACKAGE and VERSION arguments is the old style
+# call (pre autoconf-2.50), which is being phased out. PACKAGE
+# and VERSION should now be passed to AC_INIT and removed from
+# the call to AM_INIT_AUTOMAKE.
+# We support both call styles for the transition. After
+# the next Automake release, Autoconf can make the AC_INIT
+# arguments mandatory, and then we can depend on a new Autoconf
+# release and drop the old call support.
+AC_DEFUN([AM_INIT_AUTOMAKE],
+[AC_PREREQ([2.62])dnl
+dnl Autoconf wants to disallow AM_ names. We explicitly allow
+dnl the ones we care about.
+m4_pattern_allow([^AM_[A-Z]+FLAGS$])dnl
+AC_REQUIRE([AM_SET_CURRENT_AUTOMAKE_VERSION])dnl
+AC_REQUIRE([AC_PROG_INSTALL])dnl
+if test "`cd $srcdir && pwd`" != "`pwd`"; then
+ # Use -I$(srcdir) only when $(srcdir) != ., so that make's output
+ # is not polluted with repeated "-I."
+ AC_SUBST([am__isrc], [' -I$(srcdir)'])_AM_SUBST_NOTMAKE([am__isrc])dnl
+ # test to see if srcdir already configured
+ if test -f $srcdir/config.status; then
+ AC_MSG_ERROR([source directory already configured; run "make distclean" there first])
+ fi
+fi
+
+# test whether we have cygpath
+if test -z "$CYGPATH_W"; then
+ if (cygpath --version) >/dev/null 2>/dev/null; then
+ CYGPATH_W='cygpath -w'
+ else
+ CYGPATH_W=echo
+ fi
+fi
+AC_SUBST([CYGPATH_W])
+
+# Define the identity of the package.
+dnl Distinguish between old-style and new-style calls.
+m4_ifval([$2],
+[m4_ifval([$3], [_AM_SET_OPTION([no-define])])dnl
+ AC_SUBST([PACKAGE], [$1])dnl
+ AC_SUBST([VERSION], [$2])],
+[_AM_SET_OPTIONS([$1])dnl
+dnl Diagnose old-style AC_INIT with new-style AM_AUTOMAKE_INIT.
+m4_if(m4_ifdef([AC_PACKAGE_NAME], 1)m4_ifdef([AC_PACKAGE_VERSION], 1), 11,,
+ [m4_fatal([AC_INIT should be called with package and version arguments])])dnl
+ AC_SUBST([PACKAGE], ['AC_PACKAGE_TARNAME'])dnl
+ AC_SUBST([VERSION], ['AC_PACKAGE_VERSION'])])dnl
+
+_AM_IF_OPTION([no-define],,
+[AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Name of package])
+ AC_DEFINE_UNQUOTED(VERSION, "$VERSION", [Version number of package])])dnl
+
+# Some tools Automake needs.
+AC_REQUIRE([AM_SANITY_CHECK])dnl
+AC_REQUIRE([AC_ARG_PROGRAM])dnl
+AM_MISSING_PROG(ACLOCAL, aclocal-${am__api_version})
+AM_MISSING_PROG(AUTOCONF, autoconf)
+AM_MISSING_PROG(AUTOMAKE, automake-${am__api_version})
+AM_MISSING_PROG(AUTOHEADER, autoheader)
+AM_MISSING_PROG(MAKEINFO, makeinfo)
+AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
+AC_REQUIRE([AM_PROG_INSTALL_STRIP])dnl
+AC_REQUIRE([AM_PROG_MKDIR_P])dnl
+# We need awk for the "check" target. The system "awk" is bad on
+# some platforms.
+AC_REQUIRE([AC_PROG_AWK])dnl
+AC_REQUIRE([AC_PROG_MAKE_SET])dnl
+AC_REQUIRE([AM_SET_LEADING_DOT])dnl
+_AM_IF_OPTION([tar-ustar], [_AM_PROG_TAR([ustar])],
+ [_AM_IF_OPTION([tar-pax], [_AM_PROG_TAR([pax])],
+ [_AM_PROG_TAR([v7])])])
+_AM_IF_OPTION([no-dependencies],,
+[AC_PROVIDE_IFELSE([AC_PROG_CC],
+ [_AM_DEPENDENCIES(CC)],
+ [define([AC_PROG_CC],
+ defn([AC_PROG_CC])[_AM_DEPENDENCIES(CC)])])dnl
+AC_PROVIDE_IFELSE([AC_PROG_CXX],
+ [_AM_DEPENDENCIES(CXX)],
+ [define([AC_PROG_CXX],
+ defn([AC_PROG_CXX])[_AM_DEPENDENCIES(CXX)])])dnl
+AC_PROVIDE_IFELSE([AC_PROG_OBJC],
+ [_AM_DEPENDENCIES(OBJC)],
+ [define([AC_PROG_OBJC],
+ defn([AC_PROG_OBJC])[_AM_DEPENDENCIES(OBJC)])])dnl
+])
+_AM_IF_OPTION([silent-rules], [AC_REQUIRE([AM_SILENT_RULES])])dnl
+dnl The `parallel-tests' driver may need to know about EXEEXT, so add the
+dnl `am__EXEEXT' conditional if _AM_COMPILER_EXEEXT was seen. This macro
+dnl is hooked onto _AC_COMPILER_EXEEXT early, see below.
+AC_CONFIG_COMMANDS_PRE(dnl
+[m4_provide_if([_AM_COMPILER_EXEEXT],
+ [AM_CONDITIONAL([am__EXEEXT], [test -n "$EXEEXT"])])])dnl
+])
+
+dnl Hook into `_AC_COMPILER_EXEEXT' early to learn its expansion. Do not
+dnl add the conditional right here, as _AC_COMPILER_EXEEXT may be further
+dnl mangled by Autoconf and run in a shell conditional statement.
+m4_define([_AC_COMPILER_EXEEXT],
+m4_defn([_AC_COMPILER_EXEEXT])[m4_provide([_AM_COMPILER_EXEEXT])])
+
+
+# When config.status generates a header, we must update the stamp-h file.
+# This file resides in the same directory as the config header
+# that is generated. The stamp files are numbered to have different names.
+
+# Autoconf calls _AC_AM_CONFIG_HEADER_HOOK (when defined) in the
+# loop where config.status creates the headers, so we can generate
+# our stamp files there.
+AC_DEFUN([_AC_AM_CONFIG_HEADER_HOOK],
+[# Compute $1's index in $config_headers.
+_am_arg=$1
+_am_stamp_count=1
+for _am_header in $config_headers :; do
+ case $_am_header in
+ $_am_arg | $_am_arg:* )
+ break ;;
+ * )
+ _am_stamp_count=`expr $_am_stamp_count + 1` ;;
+ esac
+done
+echo "timestamp for $_am_arg" >`AS_DIRNAME(["$_am_arg"])`/stamp-h[]$_am_stamp_count])
+
+# Copyright (C) 2001, 2003, 2005, 2008 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# AM_PROG_INSTALL_SH
+# ------------------
+# Define $install_sh.
+AC_DEFUN([AM_PROG_INSTALL_SH],
+[AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
+if test x"${install_sh}" != xset; then
+ case $am_aux_dir in
+ *\ * | *\ *)
+ install_sh="\${SHELL} '$am_aux_dir/install-sh'" ;;
+ *)
+ install_sh="\${SHELL} $am_aux_dir/install-sh"
+ esac
+fi
+AC_SUBST(install_sh)])
+
+# Copyright (C) 2003, 2005 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 2
+
+# Check whether the underlying file-system supports filenames
+# with a leading dot. For instance MS-DOS doesn't.
+AC_DEFUN([AM_SET_LEADING_DOT],
+[rm -rf .tst 2>/dev/null
+mkdir .tst 2>/dev/null
+if test -d .tst; then
+ am__leading_dot=.
+else
+ am__leading_dot=_
+fi
+rmdir .tst 2>/dev/null
+AC_SUBST([am__leading_dot])])
+
+# Add --enable-maintainer-mode option to configure. -*- Autoconf -*-
+# From Jim Meyering
+
+# Copyright (C) 1996, 1998, 2000, 2001, 2002, 2003, 2004, 2005, 2008
+# Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 5
+
+# AM_MAINTAINER_MODE([DEFAULT-MODE])
+# ----------------------------------
+# Control maintainer-specific portions of Makefiles.
+# Default is to disable them, unless `enable' is passed literally.
+# For symmetry, `disable' may be passed as well. Anyway, the user
+# can override the default with the --enable/--disable switch.
+AC_DEFUN([AM_MAINTAINER_MODE],
+[m4_case(m4_default([$1], [disable]),
+ [enable], [m4_define([am_maintainer_other], [disable])],
+ [disable], [m4_define([am_maintainer_other], [enable])],
+ [m4_define([am_maintainer_other], [enable])
+ m4_warn([syntax], [unexpected argument to AM@&t@_MAINTAINER_MODE: $1])])
+AC_MSG_CHECKING([whether to am_maintainer_other maintainer-specific portions of Makefiles])
+ dnl maintainer-mode's default is 'disable' unless 'enable' is passed
+ AC_ARG_ENABLE([maintainer-mode],
+[ --][am_maintainer_other][-maintainer-mode am_maintainer_other make rules and dependencies not useful
+ (and sometimes confusing) to the casual installer],
+ [USE_MAINTAINER_MODE=$enableval],
+ [USE_MAINTAINER_MODE=]m4_if(am_maintainer_other, [enable], [no], [yes]))
+ AC_MSG_RESULT([$USE_MAINTAINER_MODE])
+ AM_CONDITIONAL([MAINTAINER_MODE], [test $USE_MAINTAINER_MODE = yes])
+ MAINT=$MAINTAINER_MODE_TRUE
+ AC_SUBST([MAINT])dnl
+]
+)
+
+AU_DEFUN([jm_MAINTAINER_MODE], [AM_MAINTAINER_MODE])
+
+# Check to see how 'make' treats includes. -*- Autoconf -*-
+
+# Copyright (C) 2001, 2002, 2003, 2005, 2009 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 4
+
+# AM_MAKE_INCLUDE()
+# -----------------
+# Check to see how make treats includes.
+AC_DEFUN([AM_MAKE_INCLUDE],
+[am_make=${MAKE-make}
+cat > confinc << 'END'
+am__doit:
+ @echo this is the am__doit target
+.PHONY: am__doit
+END
+# If we don't find an include directive, just comment out the code.
+AC_MSG_CHECKING([for style of include used by $am_make])
+am__include="#"
+am__quote=
+_am_result=none
+# First try GNU make style include.
+echo "include confinc" > confmf
+# Ignore all kinds of additional output from `make'.
+case `$am_make -s -f confmf 2> /dev/null` in #(
+*the\ am__doit\ target*)
+ am__include=include
+ am__quote=
+ _am_result=GNU
+ ;;
+esac
+# Now try BSD make style include.
+if test "$am__include" = "#"; then
+ echo '.include "confinc"' > confmf
+ case `$am_make -s -f confmf 2> /dev/null` in #(
+ *the\ am__doit\ target*)
+ am__include=.include
+ am__quote="\""
+ _am_result=BSD
+ ;;
+ esac
+fi
+AC_SUBST([am__include])
+AC_SUBST([am__quote])
+AC_MSG_RESULT([$_am_result])
+rm -f confinc confmf
+])
+
+# Fake the existence of programs that GNU maintainers use. -*- Autoconf -*-
+
+# Copyright (C) 1997, 1999, 2000, 2001, 2003, 2004, 2005, 2008
+# Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 6
+
+# AM_MISSING_PROG(NAME, PROGRAM)
+# ------------------------------
+AC_DEFUN([AM_MISSING_PROG],
+[AC_REQUIRE([AM_MISSING_HAS_RUN])
+$1=${$1-"${am_missing_run}$2"}
+AC_SUBST($1)])
+
+
+# AM_MISSING_HAS_RUN
+# ------------------
+# Define MISSING if not defined so far and test if it supports --run.
+# If it does, set am_missing_run to use it, otherwise, to nothing.
+AC_DEFUN([AM_MISSING_HAS_RUN],
+[AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
+AC_REQUIRE_AUX_FILE([missing])dnl
+if test x"${MISSING+set}" != xset; then
+ case $am_aux_dir in
+ *\ * | *\ *)
+ MISSING="\${SHELL} \"$am_aux_dir/missing\"" ;;
+ *)
+ MISSING="\${SHELL} $am_aux_dir/missing" ;;
+ esac
+fi
+# Use eval to expand $SHELL
+if eval "$MISSING --run true"; then
+ am_missing_run="$MISSING --run "
+else
+ am_missing_run=
+ AC_MSG_WARN([`missing' script is too old or missing])
+fi
+])
+
+# Copyright (C) 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# AM_PROG_MKDIR_P
+# ---------------
+# Check for `mkdir -p'.
+AC_DEFUN([AM_PROG_MKDIR_P],
+[AC_PREREQ([2.60])dnl
+AC_REQUIRE([AC_PROG_MKDIR_P])dnl
+dnl Automake 1.8 to 1.9.6 used to define mkdir_p. We now use MKDIR_P,
+dnl while keeping a definition of mkdir_p for backward compatibility.
+dnl @MKDIR_P@ is magic: AC_OUTPUT adjusts its value for each Makefile.
+dnl However we cannot define mkdir_p as $(MKDIR_P) for the sake of
+dnl Makefile.ins that do not define MKDIR_P, so we do our own
+dnl adjustment using top_builddir (which is defined more often than
+dnl MKDIR_P).
+AC_SUBST([mkdir_p], ["$MKDIR_P"])dnl
+case $mkdir_p in
+ [[\\/$]]* | ?:[[\\/]]*) ;;
+ */*) mkdir_p="\$(top_builddir)/$mkdir_p" ;;
+esac
+])
+
+# Helper functions for option handling. -*- Autoconf -*-
+
+# Copyright (C) 2001, 2002, 2003, 2005, 2008 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 4
+
+# _AM_MANGLE_OPTION(NAME)
+# -----------------------
+AC_DEFUN([_AM_MANGLE_OPTION],
+[[_AM_OPTION_]m4_bpatsubst($1, [[^a-zA-Z0-9_]], [_])])
+
+# _AM_SET_OPTION(NAME)
+# ------------------------------
+# Set option NAME. Presently that only means defining a flag for this option.
+AC_DEFUN([_AM_SET_OPTION],
+[m4_define(_AM_MANGLE_OPTION([$1]), 1)])
+
+# _AM_SET_OPTIONS(OPTIONS)
+# ----------------------------------
+# OPTIONS is a space-separated list of Automake options.
+AC_DEFUN([_AM_SET_OPTIONS],
+[m4_foreach_w([_AM_Option], [$1], [_AM_SET_OPTION(_AM_Option)])])
+
+# _AM_IF_OPTION(OPTION, IF-SET, [IF-NOT-SET])
+# -------------------------------------------
+# Execute IF-SET if OPTION is set, IF-NOT-SET otherwise.
+AC_DEFUN([_AM_IF_OPTION],
+[m4_ifset(_AM_MANGLE_OPTION([$1]), [$2], [$3])])
+
+# Check to make sure that the build environment is sane. -*- Autoconf -*-
+
+# Copyright (C) 1996, 1997, 2000, 2001, 2003, 2005, 2008
+# Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 5
+
+# AM_SANITY_CHECK
+# ---------------
+AC_DEFUN([AM_SANITY_CHECK],
+[AC_MSG_CHECKING([whether build environment is sane])
+# Just in case
+sleep 1
+echo timestamp > conftest.file
+# Reject unsafe characters in $srcdir or the absolute working directory
+# name. Accept space and tab only in the latter.
+am_lf='
+'
+case `pwd` in
+ *[[\\\"\#\$\&\'\`$am_lf]]*)
+ AC_MSG_ERROR([unsafe absolute working directory name]);;
+esac
+case $srcdir in
+ *[[\\\"\#\$\&\'\`$am_lf\ \ ]]*)
+ AC_MSG_ERROR([unsafe srcdir value: `$srcdir']);;
+esac
+
+# Do `set' in a subshell so we don't clobber the current shell's
+# arguments. Must try -L first in case configure is actually a
+# symlink; some systems play weird games with the mod time of symlinks
+# (eg FreeBSD returns the mod time of the symlink's containing
+# directory).
+if (
+ set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
+ if test "$[*]" = "X"; then
+ # -L didn't work.
+ set X `ls -t "$srcdir/configure" conftest.file`
+ fi
+ rm -f conftest.file
+ if test "$[*]" != "X $srcdir/configure conftest.file" \
+ && test "$[*]" != "X conftest.file $srcdir/configure"; then
+
+ # If neither matched, then we have a broken ls. This can happen
+ # if, for instance, CONFIG_SHELL is bash and it inherits a
+ # broken ls alias from the environment. This has actually
+ # happened. Such a system could not be considered "sane".
+ AC_MSG_ERROR([ls -t appears to fail. Make sure there is not a broken
+alias in your environment])
+ fi
+
+ test "$[2]" = conftest.file
+ )
+then
+ # Ok.
+ :
+else
+ AC_MSG_ERROR([newly created file is older than distributed files!
+Check your system clock])
+fi
+AC_MSG_RESULT(yes)])
+
+# Copyright (C) 2001, 2003, 2005 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# AM_PROG_INSTALL_STRIP
+# ---------------------
+# One issue with vendor `install' (even GNU) is that you can't
+# specify the program used to strip binaries. This is especially
+# annoying in cross-compiling environments, where the build's strip
+# is unlikely to handle the host's binaries.
+# Fortunately install-sh will honor a STRIPPROG variable, so we
+# always use install-sh in `make install-strip', and initialize
+# STRIPPROG with the value of the STRIP variable (set by the user).
+AC_DEFUN([AM_PROG_INSTALL_STRIP],
+[AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
+# Installed binaries are usually stripped using `strip' when the user
+# run `make install-strip'. However `strip' might not be the right
+# tool to use in cross-compilation environments, therefore Automake
+# will honor the `STRIP' environment variable to overrule this program.
+dnl Don't test for $cross_compiling = yes, because it might be `maybe'.
+if test "$cross_compiling" != no; then
+ AC_CHECK_TOOL([STRIP], [strip], :)
+fi
+INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
+AC_SUBST([INSTALL_STRIP_PROGRAM])])
+
+# Copyright (C) 2006, 2008 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 2
+
+# _AM_SUBST_NOTMAKE(VARIABLE)
+# ---------------------------
+# Prevent Automake from outputting VARIABLE = @VARIABLE@ in Makefile.in.
+# This macro is traced by Automake.
+AC_DEFUN([_AM_SUBST_NOTMAKE])
+
+# AM_SUBST_NOTMAKE(VARIABLE)
+# ---------------------------
+# Public sister of _AM_SUBST_NOTMAKE.
+AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)])
+
+# Check how to create a tarball. -*- Autoconf -*-
+
+# Copyright (C) 2004, 2005 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 2
+
+# _AM_PROG_TAR(FORMAT)
+# --------------------
+# Check how to create a tarball in format FORMAT.
+# FORMAT should be one of `v7', `ustar', or `pax'.
+#
+# Substitute a variable $(am__tar) that is a command
+# writing to stdout a FORMAT-tarball containing the directory
+# $tardir.
+# tardir=directory && $(am__tar) > result.tar
+#
+# Substitute a variable $(am__untar) that extract such
+# a tarball read from stdin.
+# $(am__untar) < result.tar
+AC_DEFUN([_AM_PROG_TAR],
+[# Always define AMTAR for backward compatibility.
+AM_MISSING_PROG([AMTAR], [tar])
+m4_if([$1], [v7],
+ [am__tar='${AMTAR} chof - "$$tardir"'; am__untar='${AMTAR} xf -'],
+ [m4_case([$1], [ustar],, [pax],,
+ [m4_fatal([Unknown tar format])])
+AC_MSG_CHECKING([how to create a $1 tar archive])
+# Loop over all known methods to create a tar archive until one works.
+_am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none'
+_am_tools=${am_cv_prog_tar_$1-$_am_tools}
+# Do not fold the above two line into one, because Tru64 sh and
+# Solaris sh will not grok spaces in the rhs of `-'.
+for _am_tool in $_am_tools
+do
+ case $_am_tool in
+ gnutar)
+ for _am_tar in tar gnutar gtar;
+ do
+ AM_RUN_LOG([$_am_tar --version]) && break
+ done
+ am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"'
+ am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"'
+ am__untar="$_am_tar -xf -"
+ ;;
+ plaintar)
+ # Must skip GNU tar: if it does not support --format= it doesn't create
+ # ustar tarball either.
+ (tar --version) >/dev/null 2>&1 && continue
+ am__tar='tar chf - "$$tardir"'
+ am__tar_='tar chf - "$tardir"'
+ am__untar='tar xf -'
+ ;;
+ pax)
+ am__tar='pax -L -x $1 -w "$$tardir"'
+ am__tar_='pax -L -x $1 -w "$tardir"'
+ am__untar='pax -r'
+ ;;
+ cpio)
+ am__tar='find "$$tardir" -print | cpio -o -H $1 -L'
+ am__tar_='find "$tardir" -print | cpio -o -H $1 -L'
+ am__untar='cpio -i -H $1 -d'
+ ;;
+ none)
+ am__tar=false
+ am__tar_=false
+ am__untar=false
+ ;;
+ esac
+
+ # If the value was cached, stop now. We just wanted to have am__tar
+ # and am__untar set.
+ test -n "${am_cv_prog_tar_$1}" && break
+
+ # tar/untar a dummy directory, and stop if the command works
+ rm -rf conftest.dir
+ mkdir conftest.dir
+ echo GrepMe > conftest.dir/file
+ AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar])
+ rm -rf conftest.dir
+ if test -s conftest.tar; then
+ AM_RUN_LOG([$am__untar <conftest.tar])
+ grep GrepMe conftest.dir/file >/dev/null 2>&1 && break
+ fi
+done
+rm -rf conftest.dir
+
+AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool])
+AC_MSG_RESULT([$am_cv_prog_tar_$1])])
+AC_SUBST([am__tar])
+AC_SUBST([am__untar])
+]) # _AM_PROG_TAR
+
diff --git a/src/3rdparty/libpng/autogen.sh b/src/3rdparty/libpng/autogen.sh
new file mode 100755
index 0000000..77b6308
--- /dev/null
+++ b/src/3rdparty/libpng/autogen.sh
@@ -0,0 +1,25 @@
+#! /bin/sh
+# a quick hack script to generate necessary files from
+# auto* tools.
+#
+# WARNING: if you run this you will change the versions
+# of the tools which are used and, maybe, required!
+ touch Makefile.am configure.ac
+{
+ echo "running libtoolize" >&2
+ libtoolize --force --copy --automake
+} && {
+ echo "running aclocal" >&2
+ aclocal
+} && {
+ echo "running autoheader [ignore the warnings]" >&2
+ autoheader
+} && {
+ echo "running automake" >&2
+ automake --force-missing --foreign -a -c
+} && {
+ echo "running autoconf" >&2
+ autoconf
+} &&
+ echo "autogen complete" >&2 ||
+ echo "ERROR: autogen.sh failed, autogen is incomplete" >&2
diff --git a/src/3rdparty/libpng/config.guess b/src/3rdparty/libpng/config.guess
new file mode 100755
index 0000000..da83314
--- /dev/null
+++ b/src/3rdparty/libpng/config.guess
@@ -0,0 +1,1561 @@
+#! /bin/sh
+# Attempt to guess a canonical system name.
+# Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
+# 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
+# Free Software Foundation, Inc.
+
+timestamp='2009-04-27'
+
+# This file is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
+# 02110-1301, USA.
+#
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that program.
+
+
+# Originally written by Per Bothner <per@bothner.com>.
+# Please send patches to <config-patches@gnu.org>. Submit a context
+# diff and a properly formatted ChangeLog entry.
+#
+# This script attempts to guess a canonical system name similar to
+# config.sub. If it succeeds, it prints the system name on stdout, and
+# exits with 0. Otherwise, it exits with 1.
+#
+# The plan is that this can be called by configure scripts if you
+# don't specify an explicit build system type.
+
+me=`echo "$0" | sed -e 's,.*/,,'`
+
+usage="\
+Usage: $0 [OPTION]
+
+Output the configuration name of the system \`$me' is run on.
+
+Operation modes:
+ -h, --help print this help, then exit
+ -t, --time-stamp print date of last modification, then exit
+ -v, --version print version number, then exit
+
+Report bugs and patches to <config-patches@gnu.org>."
+
+version="\
+GNU config.guess ($timestamp)
+
+Originally written by Per Bothner.
+Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
+2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
+
+This is free software; see the source for copying conditions. There is NO
+warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
+
+help="
+Try \`$me --help' for more information."
+
+# Parse command line
+while test $# -gt 0 ; do
+ case $1 in
+ --time-stamp | --time* | -t )
+ echo "$timestamp" ; exit ;;
+ --version | -v )
+ echo "$version" ; exit ;;
+ --help | --h* | -h )
+ echo "$usage"; exit ;;
+ -- ) # Stop option processing
+ shift; break ;;
+ - ) # Use stdin as input.
+ break ;;
+ -* )
+ echo "$me: invalid option $1$help" >&2
+ exit 1 ;;
+ * )
+ break ;;
+ esac
+done
+
+if test $# != 0; then
+ echo "$me: too many arguments$help" >&2
+ exit 1
+fi
+
+trap 'exit 1' 1 2 15
+
+# CC_FOR_BUILD -- compiler used by this script. Note that the use of a
+# compiler to aid in system detection is discouraged as it requires
+# temporary files to be created and, as you can see below, it is a
+# headache to deal with in a portable fashion.
+
+# Historically, `CC_FOR_BUILD' used to be named `HOST_CC'. We still
+# use `HOST_CC' if defined, but it is deprecated.
+
+# Portable tmp directory creation inspired by the Autoconf team.
+
+set_cc_for_build='
+trap "exitcode=\$?; (rm -f \$tmpfiles 2>/dev/null; rmdir \$tmp 2>/dev/null) && exit \$exitcode" 0 ;
+trap "rm -f \$tmpfiles 2>/dev/null; rmdir \$tmp 2>/dev/null; exit 1" 1 2 13 15 ;
+: ${TMPDIR=/tmp} ;
+ { tmp=`(umask 077 && mktemp -d "$TMPDIR/cgXXXXXX") 2>/dev/null` && test -n "$tmp" && test -d "$tmp" ; } ||
+ { test -n "$RANDOM" && tmp=$TMPDIR/cg$$-$RANDOM && (umask 077 && mkdir $tmp) ; } ||
+ { tmp=$TMPDIR/cg-$$ && (umask 077 && mkdir $tmp) && echo "Warning: creating insecure temp directory" >&2 ; } ||
+ { echo "$me: cannot create a temporary directory in $TMPDIR" >&2 ; exit 1 ; } ;
+dummy=$tmp/dummy ;
+tmpfiles="$dummy.c $dummy.o $dummy.rel $dummy" ;
+case $CC_FOR_BUILD,$HOST_CC,$CC in
+ ,,) echo "int x;" > $dummy.c ;
+ for c in cc gcc c89 c99 ; do
+ if ($c -c -o $dummy.o $dummy.c) >/dev/null 2>&1 ; then
+ CC_FOR_BUILD="$c"; break ;
+ fi ;
+ done ;
+ if test x"$CC_FOR_BUILD" = x ; then
+ CC_FOR_BUILD=no_compiler_found ;
+ fi
+ ;;
+ ,,*) CC_FOR_BUILD=$CC ;;
+ ,*,*) CC_FOR_BUILD=$HOST_CC ;;
+esac ; set_cc_for_build= ;'
+
+# This is needed to find uname on a Pyramid OSx when run in the BSD universe.
+# (ghazi@noc.rutgers.edu 1994-08-24)
+if (test -f /.attbin/uname) >/dev/null 2>&1 ; then
+ PATH=$PATH:/.attbin ; export PATH
+fi
+
+UNAME_MACHINE=`(uname -m) 2>/dev/null` || UNAME_MACHINE=unknown
+UNAME_RELEASE=`(uname -r) 2>/dev/null` || UNAME_RELEASE=unknown
+UNAME_SYSTEM=`(uname -s) 2>/dev/null` || UNAME_SYSTEM=unknown
+UNAME_VERSION=`(uname -v) 2>/dev/null` || UNAME_VERSION=unknown
+
+# Note: order is significant - the case branches are not exclusive.
+
+case "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" in
+ *:NetBSD:*:*)
+ # NetBSD (nbsd) targets should (where applicable) match one or
+ # more of the tupples: *-*-netbsdelf*, *-*-netbsdaout*,
+ # *-*-netbsdecoff* and *-*-netbsd*. For targets that recently
+ # switched to ELF, *-*-netbsd* would select the old
+ # object file format. This provides both forward
+ # compatibility and a consistent mechanism for selecting the
+ # object file format.
+ #
+ # Note: NetBSD doesn't particularly care about the vendor
+ # portion of the name. We always set it to "unknown".
+ sysctl="sysctl -n hw.machine_arch"
+ UNAME_MACHINE_ARCH=`(/sbin/$sysctl 2>/dev/null || \
+ /usr/sbin/$sysctl 2>/dev/null || echo unknown)`
+ case "${UNAME_MACHINE_ARCH}" in
+ armeb) machine=armeb-unknown ;;
+ arm*) machine=arm-unknown ;;
+ sh3el) machine=shl-unknown ;;
+ sh3eb) machine=sh-unknown ;;
+ sh5el) machine=sh5le-unknown ;;
+ *) machine=${UNAME_MACHINE_ARCH}-unknown ;;
+ esac
+ # The Operating System including object format, if it has switched
+ # to ELF recently, or will in the future.
+ case "${UNAME_MACHINE_ARCH}" in
+ arm*|i386|m68k|ns32k|sh3*|sparc|vax)
+ eval $set_cc_for_build
+ if echo __ELF__ | $CC_FOR_BUILD -E - 2>/dev/null \
+ | grep __ELF__ >/dev/null
+ then
+ # Once all utilities can be ECOFF (netbsdecoff) or a.out (netbsdaout).
+ # Return netbsd for either. FIX?
+ os=netbsd
+ else
+ os=netbsdelf
+ fi
+ ;;
+ *)
+ os=netbsd
+ ;;
+ esac
+ # The OS release
+ # Debian GNU/NetBSD machines have a different userland, and
+ # thus, need a distinct triplet. However, they do not need
+ # kernel version information, so it can be replaced with a
+ # suitable tag, in the style of linux-gnu.
+ case "${UNAME_VERSION}" in
+ Debian*)
+ release='-gnu'
+ ;;
+ *)
+ release=`echo ${UNAME_RELEASE}|sed -e 's/[-_].*/\./'`
+ ;;
+ esac
+ # Since CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM:
+ # contains redundant information, the shorter form:
+ # CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM is used.
+ echo "${machine}-${os}${release}"
+ exit ;;
+ *:OpenBSD:*:*)
+ UNAME_MACHINE_ARCH=`arch | sed 's/OpenBSD.//'`
+ echo ${UNAME_MACHINE_ARCH}-unknown-openbsd${UNAME_RELEASE}
+ exit ;;
+ *:ekkoBSD:*:*)
+ echo ${UNAME_MACHINE}-unknown-ekkobsd${UNAME_RELEASE}
+ exit ;;
+ *:SolidBSD:*:*)
+ echo ${UNAME_MACHINE}-unknown-solidbsd${UNAME_RELEASE}
+ exit ;;
+ macppc:MirBSD:*:*)
+ echo powerpc-unknown-mirbsd${UNAME_RELEASE}
+ exit ;;
+ *:MirBSD:*:*)
+ echo ${UNAME_MACHINE}-unknown-mirbsd${UNAME_RELEASE}
+ exit ;;
+ alpha:OSF1:*:*)
+ case $UNAME_RELEASE in
+ *4.0)
+ UNAME_RELEASE=`/usr/sbin/sizer -v | awk '{print $3}'`
+ ;;
+ *5.*)
+ UNAME_RELEASE=`/usr/sbin/sizer -v | awk '{print $4}'`
+ ;;
+ esac
+ # According to Compaq, /usr/sbin/psrinfo has been available on
+ # OSF/1 and Tru64 systems produced since 1995. I hope that
+ # covers most systems running today. This code pipes the CPU
+ # types through head -n 1, so we only detect the type of CPU 0.
+ ALPHA_CPU_TYPE=`/usr/sbin/psrinfo -v | sed -n -e 's/^ The alpha \(.*\) processor.*$/\1/p' | head -n 1`
+ case "$ALPHA_CPU_TYPE" in
+ "EV4 (21064)")
+ UNAME_MACHINE="alpha" ;;
+ "EV4.5 (21064)")
+ UNAME_MACHINE="alpha" ;;
+ "LCA4 (21066/21068)")
+ UNAME_MACHINE="alpha" ;;
+ "EV5 (21164)")
+ UNAME_MACHINE="alphaev5" ;;
+ "EV5.6 (21164A)")
+ UNAME_MACHINE="alphaev56" ;;
+ "EV5.6 (21164PC)")
+ UNAME_MACHINE="alphapca56" ;;
+ "EV5.7 (21164PC)")
+ UNAME_MACHINE="alphapca57" ;;
+ "EV6 (21264)")
+ UNAME_MACHINE="alphaev6" ;;
+ "EV6.7 (21264A)")
+ UNAME_MACHINE="alphaev67" ;;
+ "EV6.8CB (21264C)")
+ UNAME_MACHINE="alphaev68" ;;
+ "EV6.8AL (21264B)")
+ UNAME_MACHINE="alphaev68" ;;
+ "EV6.8CX (21264D)")
+ UNAME_MACHINE="alphaev68" ;;
+ "EV6.9A (21264/EV69A)")
+ UNAME_MACHINE="alphaev69" ;;
+ "EV7 (21364)")
+ UNAME_MACHINE="alphaev7" ;;
+ "EV7.9 (21364A)")
+ UNAME_MACHINE="alphaev79" ;;
+ esac
+ # A Pn.n version is a patched version.
+ # A Vn.n version is a released version.
+ # A Tn.n version is a released field test version.
+ # A Xn.n version is an unreleased experimental baselevel.
+ # 1.2 uses "1.2" for uname -r.
+ echo ${UNAME_MACHINE}-dec-osf`echo ${UNAME_RELEASE} | sed -e 's/^[PVTX]//' | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz'`
+ exit ;;
+ Alpha\ *:Windows_NT*:*)
+ # How do we know it's Interix rather than the generic POSIX subsystem?
+ # Should we change UNAME_MACHINE based on the output of uname instead
+ # of the specific Alpha model?
+ echo alpha-pc-interix
+ exit ;;
+ 21064:Windows_NT:50:3)
+ echo alpha-dec-winnt3.5
+ exit ;;
+ Amiga*:UNIX_System_V:4.0:*)
+ echo m68k-unknown-sysv4
+ exit ;;
+ *:[Aa]miga[Oo][Ss]:*:*)
+ echo ${UNAME_MACHINE}-unknown-amigaos
+ exit ;;
+ *:[Mm]orph[Oo][Ss]:*:*)
+ echo ${UNAME_MACHINE}-unknown-morphos
+ exit ;;
+ *:OS/390:*:*)
+ echo i370-ibm-openedition
+ exit ;;
+ *:z/VM:*:*)
+ echo s390-ibm-zvmoe
+ exit ;;
+ *:OS400:*:*)
+ echo powerpc-ibm-os400
+ exit ;;
+ arm:RISC*:1.[012]*:*|arm:riscix:1.[012]*:*)
+ echo arm-acorn-riscix${UNAME_RELEASE}
+ exit ;;
+ arm:riscos:*:*|arm:RISCOS:*:*)
+ echo arm-unknown-riscos
+ exit ;;
+ SR2?01:HI-UX/MPP:*:* | SR8000:HI-UX/MPP:*:*)
+ echo hppa1.1-hitachi-hiuxmpp
+ exit ;;
+ Pyramid*:OSx*:*:* | MIS*:OSx*:*:* | MIS*:SMP_DC-OSx*:*:*)
+ # akee@wpdis03.wpafb.af.mil (Earle F. Ake) contributed MIS and NILE.
+ if test "`(/bin/universe) 2>/dev/null`" = att ; then
+ echo pyramid-pyramid-sysv3
+ else
+ echo pyramid-pyramid-bsd
+ fi
+ exit ;;
+ NILE*:*:*:dcosx)
+ echo pyramid-pyramid-svr4
+ exit ;;
+ DRS?6000:unix:4.0:6*)
+ echo sparc-icl-nx6
+ exit ;;
+ DRS?6000:UNIX_SV:4.2*:7* | DRS?6000:isis:4.2*:7*)
+ case `/usr/bin/uname -p` in
+ sparc) echo sparc-icl-nx7; exit ;;
+ esac ;;
+ s390x:SunOS:*:*)
+ echo ${UNAME_MACHINE}-ibm-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
+ exit ;;
+ sun4H:SunOS:5.*:*)
+ echo sparc-hal-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
+ exit ;;
+ sun4*:SunOS:5.*:* | tadpole*:SunOS:5.*:*)
+ echo sparc-sun-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
+ exit ;;
+ i86pc:SunOS:5.*:* | i86xen:SunOS:5.*:*)
+ eval $set_cc_for_build
+ SUN_ARCH="i386"
+ # If there is a compiler, see if it is configured for 64-bit objects.
+ # Note that the Sun cc does not turn __LP64__ into 1 like gcc does.
+ # This test works for both compilers.
+ if [ "$CC_FOR_BUILD" != 'no_compiler_found' ]; then
+ if (echo '#ifdef __amd64'; echo IS_64BIT_ARCH; echo '#endif') | \
+ (CCOPTS= $CC_FOR_BUILD -E - 2>/dev/null) | \
+ grep IS_64BIT_ARCH >/dev/null
+ then
+ SUN_ARCH="x86_64"
+ fi
+ fi
+ echo ${SUN_ARCH}-pc-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
+ exit ;;
+ sun4*:SunOS:6*:*)
+ # According to config.sub, this is the proper way to canonicalize
+ # SunOS6. Hard to guess exactly what SunOS6 will be like, but
+ # it's likely to be more like Solaris than SunOS4.
+ echo sparc-sun-solaris3`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
+ exit ;;
+ sun4*:SunOS:*:*)
+ case "`/usr/bin/arch -k`" in
+ Series*|S4*)
+ UNAME_RELEASE=`uname -v`
+ ;;
+ esac
+ # Japanese Language versions have a version number like `4.1.3-JL'.
+ echo sparc-sun-sunos`echo ${UNAME_RELEASE}|sed -e 's/-/_/'`
+ exit ;;
+ sun3*:SunOS:*:*)
+ echo m68k-sun-sunos${UNAME_RELEASE}
+ exit ;;
+ sun*:*:4.2BSD:*)
+ UNAME_RELEASE=`(sed 1q /etc/motd | awk '{print substr($5,1,3)}') 2>/dev/null`
+ test "x${UNAME_RELEASE}" = "x" && UNAME_RELEASE=3
+ case "`/bin/arch`" in
+ sun3)
+ echo m68k-sun-sunos${UNAME_RELEASE}
+ ;;
+ sun4)
+ echo sparc-sun-sunos${UNAME_RELEASE}
+ ;;
+ esac
+ exit ;;
+ aushp:SunOS:*:*)
+ echo sparc-auspex-sunos${UNAME_RELEASE}
+ exit ;;
+ # The situation for MiNT is a little confusing. The machine name
+ # can be virtually everything (everything which is not
+ # "atarist" or "atariste" at least should have a processor
+ # > m68000). The system name ranges from "MiNT" over "FreeMiNT"
+ # to the lowercase version "mint" (or "freemint"). Finally
+ # the system name "TOS" denotes a system which is actually not
+ # MiNT. But MiNT is downward compatible to TOS, so this should
+ # be no problem.
+ atarist[e]:*MiNT:*:* | atarist[e]:*mint:*:* | atarist[e]:*TOS:*:*)
+ echo m68k-atari-mint${UNAME_RELEASE}
+ exit ;;
+ atari*:*MiNT:*:* | atari*:*mint:*:* | atarist[e]:*TOS:*:*)
+ echo m68k-atari-mint${UNAME_RELEASE}
+ exit ;;
+ *falcon*:*MiNT:*:* | *falcon*:*mint:*:* | *falcon*:*TOS:*:*)
+ echo m68k-atari-mint${UNAME_RELEASE}
+ exit ;;
+ milan*:*MiNT:*:* | milan*:*mint:*:* | *milan*:*TOS:*:*)
+ echo m68k-milan-mint${UNAME_RELEASE}
+ exit ;;
+ hades*:*MiNT:*:* | hades*:*mint:*:* | *hades*:*TOS:*:*)
+ echo m68k-hades-mint${UNAME_RELEASE}
+ exit ;;
+ *:*MiNT:*:* | *:*mint:*:* | *:*TOS:*:*)
+ echo m68k-unknown-mint${UNAME_RELEASE}
+ exit ;;
+ m68k:machten:*:*)
+ echo m68k-apple-machten${UNAME_RELEASE}
+ exit ;;
+ powerpc:machten:*:*)
+ echo powerpc-apple-machten${UNAME_RELEASE}
+ exit ;;
+ RISC*:Mach:*:*)
+ echo mips-dec-mach_bsd4.3
+ exit ;;
+ RISC*:ULTRIX:*:*)
+ echo mips-dec-ultrix${UNAME_RELEASE}
+ exit ;;
+ VAX*:ULTRIX*:*:*)
+ echo vax-dec-ultrix${UNAME_RELEASE}
+ exit ;;
+ 2020:CLIX:*:* | 2430:CLIX:*:*)
+ echo clipper-intergraph-clix${UNAME_RELEASE}
+ exit ;;
+ mips:*:*:UMIPS | mips:*:*:RISCos)
+ eval $set_cc_for_build
+ sed 's/^ //' << EOF >$dummy.c
+#ifdef __cplusplus
+#include <stdio.h> /* for printf() prototype */
+ int main (int argc, char *argv[]) {
+#else
+ int main (argc, argv) int argc; char *argv[]; {
+#endif
+ #if defined (host_mips) && defined (MIPSEB)
+ #if defined (SYSTYPE_SYSV)
+ printf ("mips-mips-riscos%ssysv\n", argv[1]); exit (0);
+ #endif
+ #if defined (SYSTYPE_SVR4)
+ printf ("mips-mips-riscos%ssvr4\n", argv[1]); exit (0);
+ #endif
+ #if defined (SYSTYPE_BSD43) || defined(SYSTYPE_BSD)
+ printf ("mips-mips-riscos%sbsd\n", argv[1]); exit (0);
+ #endif
+ #endif
+ exit (-1);
+ }
+EOF
+ $CC_FOR_BUILD -o $dummy $dummy.c &&
+ dummyarg=`echo "${UNAME_RELEASE}" | sed -n 's/\([0-9]*\).*/\1/p'` &&
+ SYSTEM_NAME=`$dummy $dummyarg` &&
+ { echo "$SYSTEM_NAME"; exit; }
+ echo mips-mips-riscos${UNAME_RELEASE}
+ exit ;;
+ Motorola:PowerMAX_OS:*:*)
+ echo powerpc-motorola-powermax
+ exit ;;
+ Motorola:*:4.3:PL8-*)
+ echo powerpc-harris-powermax
+ exit ;;
+ Night_Hawk:*:*:PowerMAX_OS | Synergy:PowerMAX_OS:*:*)
+ echo powerpc-harris-powermax
+ exit ;;
+ Night_Hawk:Power_UNIX:*:*)
+ echo powerpc-harris-powerunix
+ exit ;;
+ m88k:CX/UX:7*:*)
+ echo m88k-harris-cxux7
+ exit ;;
+ m88k:*:4*:R4*)
+ echo m88k-motorola-sysv4
+ exit ;;
+ m88k:*:3*:R3*)
+ echo m88k-motorola-sysv3
+ exit ;;
+ AViiON:dgux:*:*)
+ # DG/UX returns AViiON for all architectures
+ UNAME_PROCESSOR=`/usr/bin/uname -p`
+ if [ $UNAME_PROCESSOR = mc88100 ] || [ $UNAME_PROCESSOR = mc88110 ]
+ then
+ if [ ${TARGET_BINARY_INTERFACE}x = m88kdguxelfx ] || \
+ [ ${TARGET_BINARY_INTERFACE}x = x ]
+ then
+ echo m88k-dg-dgux${UNAME_RELEASE}
+ else
+ echo m88k-dg-dguxbcs${UNAME_RELEASE}
+ fi
+ else
+ echo i586-dg-dgux${UNAME_RELEASE}
+ fi
+ exit ;;
+ M88*:DolphinOS:*:*) # DolphinOS (SVR3)
+ echo m88k-dolphin-sysv3
+ exit ;;
+ M88*:*:R3*:*)
+ # Delta 88k system running SVR3
+ echo m88k-motorola-sysv3
+ exit ;;
+ XD88*:*:*:*) # Tektronix XD88 system running UTekV (SVR3)
+ echo m88k-tektronix-sysv3
+ exit ;;
+ Tek43[0-9][0-9]:UTek:*:*) # Tektronix 4300 system running UTek (BSD)
+ echo m68k-tektronix-bsd
+ exit ;;
+ *:IRIX*:*:*)
+ echo mips-sgi-irix`echo ${UNAME_RELEASE}|sed -e 's/-/_/g'`
+ exit ;;
+ ????????:AIX?:[12].1:2) # AIX 2.2.1 or AIX 2.1.1 is RT/PC AIX.
+ echo romp-ibm-aix # uname -m gives an 8 hex-code CPU id
+ exit ;; # Note that: echo "'`uname -s`'" gives 'AIX '
+ i*86:AIX:*:*)
+ echo i386-ibm-aix
+ exit ;;
+ ia64:AIX:*:*)
+ if [ -x /usr/bin/oslevel ] ; then
+ IBM_REV=`/usr/bin/oslevel`
+ else
+ IBM_REV=${UNAME_VERSION}.${UNAME_RELEASE}
+ fi
+ echo ${UNAME_MACHINE}-ibm-aix${IBM_REV}
+ exit ;;
+ *:AIX:2:3)
+ if grep bos325 /usr/include/stdio.h >/dev/null 2>&1; then
+ eval $set_cc_for_build
+ sed 's/^ //' << EOF >$dummy.c
+ #include <sys/systemcfg.h>
+
+ main()
+ {
+ if (!__power_pc())
+ exit(1);
+ puts("powerpc-ibm-aix3.2.5");
+ exit(0);
+ }
+EOF
+ if $CC_FOR_BUILD -o $dummy $dummy.c && SYSTEM_NAME=`$dummy`
+ then
+ echo "$SYSTEM_NAME"
+ else
+ echo rs6000-ibm-aix3.2.5
+ fi
+ elif grep bos324 /usr/include/stdio.h >/dev/null 2>&1; then
+ echo rs6000-ibm-aix3.2.4
+ else
+ echo rs6000-ibm-aix3.2
+ fi
+ exit ;;
+ *:AIX:*:[456])
+ IBM_CPU_ID=`/usr/sbin/lsdev -C -c processor -S available | sed 1q | awk '{ print $1 }'`
+ if /usr/sbin/lsattr -El ${IBM_CPU_ID} | grep ' POWER' >/dev/null 2>&1; then
+ IBM_ARCH=rs6000
+ else
+ IBM_ARCH=powerpc
+ fi
+ if [ -x /usr/bin/oslevel ] ; then
+ IBM_REV=`/usr/bin/oslevel`
+ else
+ IBM_REV=${UNAME_VERSION}.${UNAME_RELEASE}
+ fi
+ echo ${IBM_ARCH}-ibm-aix${IBM_REV}
+ exit ;;
+ *:AIX:*:*)
+ echo rs6000-ibm-aix
+ exit ;;
+ ibmrt:4.4BSD:*|romp-ibm:BSD:*)
+ echo romp-ibm-bsd4.4
+ exit ;;
+ ibmrt:*BSD:*|romp-ibm:BSD:*) # covers RT/PC BSD and
+ echo romp-ibm-bsd${UNAME_RELEASE} # 4.3 with uname added to
+ exit ;; # report: romp-ibm BSD 4.3
+ *:BOSX:*:*)
+ echo rs6000-bull-bosx
+ exit ;;
+ DPX/2?00:B.O.S.:*:*)
+ echo m68k-bull-sysv3
+ exit ;;
+ 9000/[34]??:4.3bsd:1.*:*)
+ echo m68k-hp-bsd
+ exit ;;
+ hp300:4.4BSD:*:* | 9000/[34]??:4.3bsd:2.*:*)
+ echo m68k-hp-bsd4.4
+ exit ;;
+ 9000/[34678]??:HP-UX:*:*)
+ HPUX_REV=`echo ${UNAME_RELEASE}|sed -e 's/[^.]*.[0B]*//'`
+ case "${UNAME_MACHINE}" in
+ 9000/31? ) HP_ARCH=m68000 ;;
+ 9000/[34]?? ) HP_ARCH=m68k ;;
+ 9000/[678][0-9][0-9])
+ if [ -x /usr/bin/getconf ]; then
+ sc_cpu_version=`/usr/bin/getconf SC_CPU_VERSION 2>/dev/null`
+ sc_kernel_bits=`/usr/bin/getconf SC_KERNEL_BITS 2>/dev/null`
+ case "${sc_cpu_version}" in
+ 523) HP_ARCH="hppa1.0" ;; # CPU_PA_RISC1_0
+ 528) HP_ARCH="hppa1.1" ;; # CPU_PA_RISC1_1
+ 532) # CPU_PA_RISC2_0
+ case "${sc_kernel_bits}" in
+ 32) HP_ARCH="hppa2.0n" ;;
+ 64) HP_ARCH="hppa2.0w" ;;
+ '') HP_ARCH="hppa2.0" ;; # HP-UX 10.20
+ esac ;;
+ esac
+ fi
+ if [ "${HP_ARCH}" = "" ]; then
+ eval $set_cc_for_build
+ sed 's/^ //' << EOF >$dummy.c
+
+ #define _HPUX_SOURCE
+ #include <stdlib.h>
+ #include <unistd.h>
+
+ int main ()
+ {
+ #if defined(_SC_KERNEL_BITS)
+ long bits = sysconf(_SC_KERNEL_BITS);
+ #endif
+ long cpu = sysconf (_SC_CPU_VERSION);
+
+ switch (cpu)
+ {
+ case CPU_PA_RISC1_0: puts ("hppa1.0"); break;
+ case CPU_PA_RISC1_1: puts ("hppa1.1"); break;
+ case CPU_PA_RISC2_0:
+ #if defined(_SC_KERNEL_BITS)
+ switch (bits)
+ {
+ case 64: puts ("hppa2.0w"); break;
+ case 32: puts ("hppa2.0n"); break;
+ default: puts ("hppa2.0"); break;
+ } break;
+ #else /* !defined(_SC_KERNEL_BITS) */
+ puts ("hppa2.0"); break;
+ #endif
+ default: puts ("hppa1.0"); break;
+ }
+ exit (0);
+ }
+EOF
+ (CCOPTS= $CC_FOR_BUILD -o $dummy $dummy.c 2>/dev/null) && HP_ARCH=`$dummy`
+ test -z "$HP_ARCH" && HP_ARCH=hppa
+ fi ;;
+ esac
+ if [ ${HP_ARCH} = "hppa2.0w" ]
+ then
+ eval $set_cc_for_build
+
+ # hppa2.0w-hp-hpux* has a 64-bit kernel and a compiler generating
+ # 32-bit code. hppa64-hp-hpux* has the same kernel and a compiler
+ # generating 64-bit code. GNU and HP use different nomenclature:
+ #
+ # $ CC_FOR_BUILD=cc ./config.guess
+ # => hppa2.0w-hp-hpux11.23
+ # $ CC_FOR_BUILD="cc +DA2.0w" ./config.guess
+ # => hppa64-hp-hpux11.23
+
+ if echo __LP64__ | (CCOPTS= $CC_FOR_BUILD -E - 2>/dev/null) |
+ grep __LP64__ >/dev/null
+ then
+ HP_ARCH="hppa2.0w"
+ else
+ HP_ARCH="hppa64"
+ fi
+ fi
+ echo ${HP_ARCH}-hp-hpux${HPUX_REV}
+ exit ;;
+ ia64:HP-UX:*:*)
+ HPUX_REV=`echo ${UNAME_RELEASE}|sed -e 's/[^.]*.[0B]*//'`
+ echo ia64-hp-hpux${HPUX_REV}
+ exit ;;
+ 3050*:HI-UX:*:*)
+ eval $set_cc_for_build
+ sed 's/^ //' << EOF >$dummy.c
+ #include <unistd.h>
+ int
+ main ()
+ {
+ long cpu = sysconf (_SC_CPU_VERSION);
+ /* The order matters, because CPU_IS_HP_MC68K erroneously returns
+ true for CPU_PA_RISC1_0. CPU_IS_PA_RISC returns correct
+ results, however. */
+ if (CPU_IS_PA_RISC (cpu))
+ {
+ switch (cpu)
+ {
+ case CPU_PA_RISC1_0: puts ("hppa1.0-hitachi-hiuxwe2"); break;
+ case CPU_PA_RISC1_1: puts ("hppa1.1-hitachi-hiuxwe2"); break;
+ case CPU_PA_RISC2_0: puts ("hppa2.0-hitachi-hiuxwe2"); break;
+ default: puts ("hppa-hitachi-hiuxwe2"); break;
+ }
+ }
+ else if (CPU_IS_HP_MC68K (cpu))
+ puts ("m68k-hitachi-hiuxwe2");
+ else puts ("unknown-hitachi-hiuxwe2");
+ exit (0);
+ }
+EOF
+ $CC_FOR_BUILD -o $dummy $dummy.c && SYSTEM_NAME=`$dummy` &&
+ { echo "$SYSTEM_NAME"; exit; }
+ echo unknown-hitachi-hiuxwe2
+ exit ;;
+ 9000/7??:4.3bsd:*:* | 9000/8?[79]:4.3bsd:*:* )
+ echo hppa1.1-hp-bsd
+ exit ;;
+ 9000/8??:4.3bsd:*:*)
+ echo hppa1.0-hp-bsd
+ exit ;;
+ *9??*:MPE/iX:*:* | *3000*:MPE/iX:*:*)
+ echo hppa1.0-hp-mpeix
+ exit ;;
+ hp7??:OSF1:*:* | hp8?[79]:OSF1:*:* )
+ echo hppa1.1-hp-osf
+ exit ;;
+ hp8??:OSF1:*:*)
+ echo hppa1.0-hp-osf
+ exit ;;
+ i*86:OSF1:*:*)
+ if [ -x /usr/sbin/sysversion ] ; then
+ echo ${UNAME_MACHINE}-unknown-osf1mk
+ else
+ echo ${UNAME_MACHINE}-unknown-osf1
+ fi
+ exit ;;
+ parisc*:Lites*:*:*)
+ echo hppa1.1-hp-lites
+ exit ;;
+ C1*:ConvexOS:*:* | convex:ConvexOS:C1*:*)
+ echo c1-convex-bsd
+ exit ;;
+ C2*:ConvexOS:*:* | convex:ConvexOS:C2*:*)
+ if getsysinfo -f scalar_acc
+ then echo c32-convex-bsd
+ else echo c2-convex-bsd
+ fi
+ exit ;;
+ C34*:ConvexOS:*:* | convex:ConvexOS:C34*:*)
+ echo c34-convex-bsd
+ exit ;;
+ C38*:ConvexOS:*:* | convex:ConvexOS:C38*:*)
+ echo c38-convex-bsd
+ exit ;;
+ C4*:ConvexOS:*:* | convex:ConvexOS:C4*:*)
+ echo c4-convex-bsd
+ exit ;;
+ CRAY*Y-MP:*:*:*)
+ echo ymp-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/'
+ exit ;;
+ CRAY*[A-Z]90:*:*:*)
+ echo ${UNAME_MACHINE}-cray-unicos${UNAME_RELEASE} \
+ | sed -e 's/CRAY.*\([A-Z]90\)/\1/' \
+ -e y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/ \
+ -e 's/\.[^.]*$/.X/'
+ exit ;;
+ CRAY*TS:*:*:*)
+ echo t90-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/'
+ exit ;;
+ CRAY*T3E:*:*:*)
+ echo alphaev5-cray-unicosmk${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/'
+ exit ;;
+ CRAY*SV1:*:*:*)
+ echo sv1-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/'
+ exit ;;
+ *:UNICOS/mp:*:*)
+ echo craynv-cray-unicosmp${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/'
+ exit ;;
+ F30[01]:UNIX_System_V:*:* | F700:UNIX_System_V:*:*)
+ FUJITSU_PROC=`uname -m | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz'`
+ FUJITSU_SYS=`uname -p | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/\///'`
+ FUJITSU_REL=`echo ${UNAME_RELEASE} | sed -e 's/ /_/'`
+ echo "${FUJITSU_PROC}-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}"
+ exit ;;
+ 5000:UNIX_System_V:4.*:*)
+ FUJITSU_SYS=`uname -p | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/\///'`
+ FUJITSU_REL=`echo ${UNAME_RELEASE} | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/ /_/'`
+ echo "sparc-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}"
+ exit ;;
+ i*86:BSD/386:*:* | i*86:BSD/OS:*:* | *:Ascend\ Embedded/OS:*:*)
+ echo ${UNAME_MACHINE}-pc-bsdi${UNAME_RELEASE}
+ exit ;;
+ sparc*:BSD/OS:*:*)
+ echo sparc-unknown-bsdi${UNAME_RELEASE}
+ exit ;;
+ *:BSD/OS:*:*)
+ echo ${UNAME_MACHINE}-unknown-bsdi${UNAME_RELEASE}
+ exit ;;
+ *:FreeBSD:*:*)
+ case ${UNAME_MACHINE} in
+ pc98)
+ echo i386-unknown-freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` ;;
+ amd64)
+ echo x86_64-unknown-freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` ;;
+ *)
+ echo ${UNAME_MACHINE}-unknown-freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` ;;
+ esac
+ exit ;;
+ i*:CYGWIN*:*)
+ echo ${UNAME_MACHINE}-pc-cygwin
+ exit ;;
+ *:MINGW*:*)
+ echo ${UNAME_MACHINE}-pc-mingw32
+ exit ;;
+ i*:windows32*:*)
+ # uname -m includes "-pc" on this system.
+ echo ${UNAME_MACHINE}-mingw32
+ exit ;;
+ i*:PW*:*)
+ echo ${UNAME_MACHINE}-pc-pw32
+ exit ;;
+ *:Interix*:[3456]*)
+ case ${UNAME_MACHINE} in
+ x86)
+ echo i586-pc-interix${UNAME_RELEASE}
+ exit ;;
+ EM64T | authenticamd | genuineintel)
+ echo x86_64-unknown-interix${UNAME_RELEASE}
+ exit ;;
+ IA64)
+ echo ia64-unknown-interix${UNAME_RELEASE}
+ exit ;;
+ esac ;;
+ [345]86:Windows_95:* | [345]86:Windows_98:* | [345]86:Windows_NT:*)
+ echo i${UNAME_MACHINE}-pc-mks
+ exit ;;
+ i*:Windows_NT*:* | Pentium*:Windows_NT*:*)
+ # How do we know it's Interix rather than the generic POSIX subsystem?
+ # It also conflicts with pre-2.0 versions of AT&T UWIN. Should we
+ # UNAME_MACHINE based on the output of uname instead of i386?
+ echo i586-pc-interix
+ exit ;;
+ i*:UWIN*:*)
+ echo ${UNAME_MACHINE}-pc-uwin
+ exit ;;
+ amd64:CYGWIN*:*:* | x86_64:CYGWIN*:*:*)
+ echo x86_64-unknown-cygwin
+ exit ;;
+ p*:CYGWIN*:*)
+ echo powerpcle-unknown-cygwin
+ exit ;;
+ prep*:SunOS:5.*:*)
+ echo powerpcle-unknown-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
+ exit ;;
+ *:GNU:*:*)
+ # the GNU system
+ echo `echo ${UNAME_MACHINE}|sed -e 's,[-/].*$,,'`-unknown-gnu`echo ${UNAME_RELEASE}|sed -e 's,/.*$,,'`
+ exit ;;
+ *:GNU/*:*:*)
+ # other systems with GNU libc and userland
+ echo ${UNAME_MACHINE}-unknown-`echo ${UNAME_SYSTEM} | sed 's,^[^/]*/,,' | tr '[A-Z]' '[a-z]'``echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'`-gnu
+ exit ;;
+ i*86:Minix:*:*)
+ echo ${UNAME_MACHINE}-pc-minix
+ exit ;;
+ arm*:Linux:*:*)
+ eval $set_cc_for_build
+ if echo __ARM_EABI__ | $CC_FOR_BUILD -E - 2>/dev/null \
+ | grep -q __ARM_EABI__
+ then
+ echo ${UNAME_MACHINE}-unknown-linux-gnu
+ else
+ echo ${UNAME_MACHINE}-unknown-linux-gnueabi
+ fi
+ exit ;;
+ avr32*:Linux:*:*)
+ echo ${UNAME_MACHINE}-unknown-linux-gnu
+ exit ;;
+ cris:Linux:*:*)
+ echo cris-axis-linux-gnu
+ exit ;;
+ crisv32:Linux:*:*)
+ echo crisv32-axis-linux-gnu
+ exit ;;
+ frv:Linux:*:*)
+ echo frv-unknown-linux-gnu
+ exit ;;
+ ia64:Linux:*:*)
+ echo ${UNAME_MACHINE}-unknown-linux-gnu
+ exit ;;
+ m32r*:Linux:*:*)
+ echo ${UNAME_MACHINE}-unknown-linux-gnu
+ exit ;;
+ m68*:Linux:*:*)
+ echo ${UNAME_MACHINE}-unknown-linux-gnu
+ exit ;;
+ mips:Linux:*:*)
+ eval $set_cc_for_build
+ sed 's/^ //' << EOF >$dummy.c
+ #undef CPU
+ #undef mips
+ #undef mipsel
+ #if defined(__MIPSEL__) || defined(__MIPSEL) || defined(_MIPSEL) || defined(MIPSEL)
+ CPU=mipsel
+ #else
+ #if defined(__MIPSEB__) || defined(__MIPSEB) || defined(_MIPSEB) || defined(MIPSEB)
+ CPU=mips
+ #else
+ CPU=
+ #endif
+ #endif
+EOF
+ eval "`$CC_FOR_BUILD -E $dummy.c 2>/dev/null | sed -n '
+ /^CPU/{
+ s: ::g
+ p
+ }'`"
+ test x"${CPU}" != x && { echo "${CPU}-unknown-linux-gnu"; exit; }
+ ;;
+ mips64:Linux:*:*)
+ eval $set_cc_for_build
+ sed 's/^ //' << EOF >$dummy.c
+ #undef CPU
+ #undef mips64
+ #undef mips64el
+ #if defined(__MIPSEL__) || defined(__MIPSEL) || defined(_MIPSEL) || defined(MIPSEL)
+ CPU=mips64el
+ #else
+ #if defined(__MIPSEB__) || defined(__MIPSEB) || defined(_MIPSEB) || defined(MIPSEB)
+ CPU=mips64
+ #else
+ CPU=
+ #endif
+ #endif
+EOF
+ eval "`$CC_FOR_BUILD -E $dummy.c 2>/dev/null | sed -n '
+ /^CPU/{
+ s: ::g
+ p
+ }'`"
+ test x"${CPU}" != x && { echo "${CPU}-unknown-linux-gnu"; exit; }
+ ;;
+ or32:Linux:*:*)
+ echo or32-unknown-linux-gnu
+ exit ;;
+ ppc:Linux:*:*)
+ echo powerpc-unknown-linux-gnu
+ exit ;;
+ ppc64:Linux:*:*)
+ echo powerpc64-unknown-linux-gnu
+ exit ;;
+ alpha:Linux:*:*)
+ case `sed -n '/^cpu model/s/^.*: \(.*\)/\1/p' < /proc/cpuinfo` in
+ EV5) UNAME_MACHINE=alphaev5 ;;
+ EV56) UNAME_MACHINE=alphaev56 ;;
+ PCA56) UNAME_MACHINE=alphapca56 ;;
+ PCA57) UNAME_MACHINE=alphapca56 ;;
+ EV6) UNAME_MACHINE=alphaev6 ;;
+ EV67) UNAME_MACHINE=alphaev67 ;;
+ EV68*) UNAME_MACHINE=alphaev68 ;;
+ esac
+ objdump --private-headers /bin/sh | grep ld.so.1 >/dev/null
+ if test "$?" = 0 ; then LIBC="libc1" ; else LIBC="" ; fi
+ echo ${UNAME_MACHINE}-unknown-linux-gnu${LIBC}
+ exit ;;
+ padre:Linux:*:*)
+ echo sparc-unknown-linux-gnu
+ exit ;;
+ parisc:Linux:*:* | hppa:Linux:*:*)
+ # Look for CPU level
+ case `grep '^cpu[^a-z]*:' /proc/cpuinfo 2>/dev/null | cut -d' ' -f2` in
+ PA7*) echo hppa1.1-unknown-linux-gnu ;;
+ PA8*) echo hppa2.0-unknown-linux-gnu ;;
+ *) echo hppa-unknown-linux-gnu ;;
+ esac
+ exit ;;
+ parisc64:Linux:*:* | hppa64:Linux:*:*)
+ echo hppa64-unknown-linux-gnu
+ exit ;;
+ s390:Linux:*:* | s390x:Linux:*:*)
+ echo ${UNAME_MACHINE}-ibm-linux
+ exit ;;
+ sh64*:Linux:*:*)
+ echo ${UNAME_MACHINE}-unknown-linux-gnu
+ exit ;;
+ sh*:Linux:*:*)
+ echo ${UNAME_MACHINE}-unknown-linux-gnu
+ exit ;;
+ sparc:Linux:*:* | sparc64:Linux:*:*)
+ echo ${UNAME_MACHINE}-unknown-linux-gnu
+ exit ;;
+ vax:Linux:*:*)
+ echo ${UNAME_MACHINE}-dec-linux-gnu
+ exit ;;
+ x86_64:Linux:*:*)
+ echo x86_64-unknown-linux-gnu
+ exit ;;
+ xtensa*:Linux:*:*)
+ echo ${UNAME_MACHINE}-unknown-linux-gnu
+ exit ;;
+ i*86:Linux:*:*)
+ # The BFD linker knows what the default object file format is, so
+ # first see if it will tell us. cd to the root directory to prevent
+ # problems with other programs or directories called `ld' in the path.
+ # Set LC_ALL=C to ensure ld outputs messages in English.
+ ld_supported_targets=`cd /; LC_ALL=C ld --help 2>&1 \
+ | sed -ne '/supported targets:/!d
+ s/[ ][ ]*/ /g
+ s/.*supported targets: *//
+ s/ .*//
+ p'`
+ case "$ld_supported_targets" in
+ elf32-i386)
+ TENTATIVE="${UNAME_MACHINE}-pc-linux-gnu"
+ ;;
+ a.out-i386-linux)
+ echo "${UNAME_MACHINE}-pc-linux-gnuaout"
+ exit ;;
+ "")
+ # Either a pre-BFD a.out linker (linux-gnuoldld) or
+ # one that does not give us useful --help.
+ echo "${UNAME_MACHINE}-pc-linux-gnuoldld"
+ exit ;;
+ esac
+ # Determine whether the default compiler is a.out or elf
+ eval $set_cc_for_build
+ sed 's/^ //' << EOF >$dummy.c
+ #include <features.h>
+ #ifdef __ELF__
+ # ifdef __GLIBC__
+ # if __GLIBC__ >= 2
+ LIBC=gnu
+ # else
+ LIBC=gnulibc1
+ # endif
+ # else
+ LIBC=gnulibc1
+ # endif
+ #else
+ #if defined(__INTEL_COMPILER) || defined(__PGI) || defined(__SUNPRO_C) || defined(__SUNPRO_CC)
+ LIBC=gnu
+ #else
+ LIBC=gnuaout
+ #endif
+ #endif
+ #ifdef __dietlibc__
+ LIBC=dietlibc
+ #endif
+EOF
+ eval "`$CC_FOR_BUILD -E $dummy.c 2>/dev/null | sed -n '
+ /^LIBC/{
+ s: ::g
+ p
+ }'`"
+ test x"${LIBC}" != x && {
+ echo "${UNAME_MACHINE}-pc-linux-${LIBC}"
+ exit
+ }
+ test x"${TENTATIVE}" != x && { echo "${TENTATIVE}"; exit; }
+ ;;
+ i*86:DYNIX/ptx:4*:*)
+ # ptx 4.0 does uname -s correctly, with DYNIX/ptx in there.
+ # earlier versions are messed up and put the nodename in both
+ # sysname and nodename.
+ echo i386-sequent-sysv4
+ exit ;;
+ i*86:UNIX_SV:4.2MP:2.*)
+ # Unixware is an offshoot of SVR4, but it has its own version
+ # number series starting with 2...
+ # I am not positive that other SVR4 systems won't match this,
+ # I just have to hope. -- rms.
+ # Use sysv4.2uw... so that sysv4* matches it.
+ echo ${UNAME_MACHINE}-pc-sysv4.2uw${UNAME_VERSION}
+ exit ;;
+ i*86:OS/2:*:*)
+ # If we were able to find `uname', then EMX Unix compatibility
+ # is probably installed.
+ echo ${UNAME_MACHINE}-pc-os2-emx
+ exit ;;
+ i*86:XTS-300:*:STOP)
+ echo ${UNAME_MACHINE}-unknown-stop
+ exit ;;
+ i*86:atheos:*:*)
+ echo ${UNAME_MACHINE}-unknown-atheos
+ exit ;;
+ i*86:syllable:*:*)
+ echo ${UNAME_MACHINE}-pc-syllable
+ exit ;;
+ i*86:LynxOS:2.*:* | i*86:LynxOS:3.[01]*:* | i*86:LynxOS:4.0*:*)
+ echo i386-unknown-lynxos${UNAME_RELEASE}
+ exit ;;
+ i*86:*DOS:*:*)
+ echo ${UNAME_MACHINE}-pc-msdosdjgpp
+ exit ;;
+ i*86:*:4.*:* | i*86:SYSTEM_V:4.*:*)
+ UNAME_REL=`echo ${UNAME_RELEASE} | sed 's/\/MP$//'`
+ if grep Novell /usr/include/link.h >/dev/null 2>/dev/null; then
+ echo ${UNAME_MACHINE}-univel-sysv${UNAME_REL}
+ else
+ echo ${UNAME_MACHINE}-pc-sysv${UNAME_REL}
+ fi
+ exit ;;
+ i*86:*:5:[678]*)
+ # UnixWare 7.x, OpenUNIX and OpenServer 6.
+ case `/bin/uname -X | grep "^Machine"` in
+ *486*) UNAME_MACHINE=i486 ;;
+ *Pentium) UNAME_MACHINE=i586 ;;
+ *Pent*|*Celeron) UNAME_MACHINE=i686 ;;
+ esac
+ echo ${UNAME_MACHINE}-unknown-sysv${UNAME_RELEASE}${UNAME_SYSTEM}${UNAME_VERSION}
+ exit ;;
+ i*86:*:3.2:*)
+ if test -f /usr/options/cb.name; then
+ UNAME_REL=`sed -n 's/.*Version //p' </usr/options/cb.name`
+ echo ${UNAME_MACHINE}-pc-isc$UNAME_REL
+ elif /bin/uname -X 2>/dev/null >/dev/null ; then
+ UNAME_REL=`(/bin/uname -X|grep Release|sed -e 's/.*= //')`
+ (/bin/uname -X|grep i80486 >/dev/null) && UNAME_MACHINE=i486
+ (/bin/uname -X|grep '^Machine.*Pentium' >/dev/null) \
+ && UNAME_MACHINE=i586
+ (/bin/uname -X|grep '^Machine.*Pent *II' >/dev/null) \
+ && UNAME_MACHINE=i686
+ (/bin/uname -X|grep '^Machine.*Pentium Pro' >/dev/null) \
+ && UNAME_MACHINE=i686
+ echo ${UNAME_MACHINE}-pc-sco$UNAME_REL
+ else
+ echo ${UNAME_MACHINE}-pc-sysv32
+ fi
+ exit ;;
+ pc:*:*:*)
+ # Left here for compatibility:
+ # uname -m prints for DJGPP always 'pc', but it prints nothing about
+ # the processor, so we play safe by assuming i586.
+ # Note: whatever this is, it MUST be the same as what config.sub
+ # prints for the "djgpp" host, or else GDB configury will decide that
+ # this is a cross-build.
+ echo i586-pc-msdosdjgpp
+ exit ;;
+ Intel:Mach:3*:*)
+ echo i386-pc-mach3
+ exit ;;
+ paragon:*:*:*)
+ echo i860-intel-osf1
+ exit ;;
+ i860:*:4.*:*) # i860-SVR4
+ if grep Stardent /usr/include/sys/uadmin.h >/dev/null 2>&1 ; then
+ echo i860-stardent-sysv${UNAME_RELEASE} # Stardent Vistra i860-SVR4
+ else # Add other i860-SVR4 vendors below as they are discovered.
+ echo i860-unknown-sysv${UNAME_RELEASE} # Unknown i860-SVR4
+ fi
+ exit ;;
+ mini*:CTIX:SYS*5:*)
+ # "miniframe"
+ echo m68010-convergent-sysv
+ exit ;;
+ mc68k:UNIX:SYSTEM5:3.51m)
+ echo m68k-convergent-sysv
+ exit ;;
+ M680?0:D-NIX:5.3:*)
+ echo m68k-diab-dnix
+ exit ;;
+ M68*:*:R3V[5678]*:*)
+ test -r /sysV68 && { echo 'm68k-motorola-sysv'; exit; } ;;
+ 3[345]??:*:4.0:3.0 | 3[34]??A:*:4.0:3.0 | 3[34]??,*:*:4.0:3.0 | 3[34]??/*:*:4.0:3.0 | 4400:*:4.0:3.0 | 4850:*:4.0:3.0 | SKA40:*:4.0:3.0 | SDS2:*:4.0:3.0 | SHG2:*:4.0:3.0 | S7501*:*:4.0:3.0)
+ OS_REL=''
+ test -r /etc/.relid \
+ && OS_REL=.`sed -n 's/[^ ]* [^ ]* \([0-9][0-9]\).*/\1/p' < /etc/.relid`
+ /bin/uname -p 2>/dev/null | grep 86 >/dev/null \
+ && { echo i486-ncr-sysv4.3${OS_REL}; exit; }
+ /bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \
+ && { echo i586-ncr-sysv4.3${OS_REL}; exit; } ;;
+ 3[34]??:*:4.0:* | 3[34]??,*:*:4.0:*)
+ /bin/uname -p 2>/dev/null | grep 86 >/dev/null \
+ && { echo i486-ncr-sysv4; exit; } ;;
+ NCR*:*:4.2:* | MPRAS*:*:4.2:*)
+ OS_REL='.3'
+ test -r /etc/.relid \
+ && OS_REL=.`sed -n 's/[^ ]* [^ ]* \([0-9][0-9]\).*/\1/p' < /etc/.relid`
+ /bin/uname -p 2>/dev/null | grep 86 >/dev/null \
+ && { echo i486-ncr-sysv4.3${OS_REL}; exit; }
+ /bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \
+ && { echo i586-ncr-sysv4.3${OS_REL}; exit; }
+ /bin/uname -p 2>/dev/null | /bin/grep pteron >/dev/null \
+ && { echo i586-ncr-sysv4.3${OS_REL}; exit; } ;;
+ m68*:LynxOS:2.*:* | m68*:LynxOS:3.0*:*)
+ echo m68k-unknown-lynxos${UNAME_RELEASE}
+ exit ;;
+ mc68030:UNIX_System_V:4.*:*)
+ echo m68k-atari-sysv4
+ exit ;;
+ TSUNAMI:LynxOS:2.*:*)
+ echo sparc-unknown-lynxos${UNAME_RELEASE}
+ exit ;;
+ rs6000:LynxOS:2.*:*)
+ echo rs6000-unknown-lynxos${UNAME_RELEASE}
+ exit ;;
+ PowerPC:LynxOS:2.*:* | PowerPC:LynxOS:3.[01]*:* | PowerPC:LynxOS:4.0*:*)
+ echo powerpc-unknown-lynxos${UNAME_RELEASE}
+ exit ;;
+ SM[BE]S:UNIX_SV:*:*)
+ echo mips-dde-sysv${UNAME_RELEASE}
+ exit ;;
+ RM*:ReliantUNIX-*:*:*)
+ echo mips-sni-sysv4
+ exit ;;
+ RM*:SINIX-*:*:*)
+ echo mips-sni-sysv4
+ exit ;;
+ *:SINIX-*:*:*)
+ if uname -p 2>/dev/null >/dev/null ; then
+ UNAME_MACHINE=`(uname -p) 2>/dev/null`
+ echo ${UNAME_MACHINE}-sni-sysv4
+ else
+ echo ns32k-sni-sysv
+ fi
+ exit ;;
+ PENTIUM:*:4.0*:*) # Unisys `ClearPath HMP IX 4000' SVR4/MP effort
+ # says <Richard.M.Bartel@ccMail.Census.GOV>
+ echo i586-unisys-sysv4
+ exit ;;
+ *:UNIX_System_V:4*:FTX*)
+ # From Gerald Hewes <hewes@openmarket.com>.
+ # How about differentiating between stratus architectures? -djm
+ echo hppa1.1-stratus-sysv4
+ exit ;;
+ *:*:*:FTX*)
+ # From seanf@swdc.stratus.com.
+ echo i860-stratus-sysv4
+ exit ;;
+ i*86:VOS:*:*)
+ # From Paul.Green@stratus.com.
+ echo ${UNAME_MACHINE}-stratus-vos
+ exit ;;
+ *:VOS:*:*)
+ # From Paul.Green@stratus.com.
+ echo hppa1.1-stratus-vos
+ exit ;;
+ mc68*:A/UX:*:*)
+ echo m68k-apple-aux${UNAME_RELEASE}
+ exit ;;
+ news*:NEWS-OS:6*:*)
+ echo mips-sony-newsos6
+ exit ;;
+ R[34]000:*System_V*:*:* | R4000:UNIX_SYSV:*:* | R*000:UNIX_SV:*:*)
+ if [ -d /usr/nec ]; then
+ echo mips-nec-sysv${UNAME_RELEASE}
+ else
+ echo mips-unknown-sysv${UNAME_RELEASE}
+ fi
+ exit ;;
+ BeBox:BeOS:*:*) # BeOS running on hardware made by Be, PPC only.
+ echo powerpc-be-beos
+ exit ;;
+ BeMac:BeOS:*:*) # BeOS running on Mac or Mac clone, PPC only.
+ echo powerpc-apple-beos
+ exit ;;
+ BePC:BeOS:*:*) # BeOS running on Intel PC compatible.
+ echo i586-pc-beos
+ exit ;;
+ BePC:Haiku:*:*) # Haiku running on Intel PC compatible.
+ echo i586-pc-haiku
+ exit ;;
+ SX-4:SUPER-UX:*:*)
+ echo sx4-nec-superux${UNAME_RELEASE}
+ exit ;;
+ SX-5:SUPER-UX:*:*)
+ echo sx5-nec-superux${UNAME_RELEASE}
+ exit ;;
+ SX-6:SUPER-UX:*:*)
+ echo sx6-nec-superux${UNAME_RELEASE}
+ exit ;;
+ SX-7:SUPER-UX:*:*)
+ echo sx7-nec-superux${UNAME_RELEASE}
+ exit ;;
+ SX-8:SUPER-UX:*:*)
+ echo sx8-nec-superux${UNAME_RELEASE}
+ exit ;;
+ SX-8R:SUPER-UX:*:*)
+ echo sx8r-nec-superux${UNAME_RELEASE}
+ exit ;;
+ Power*:Rhapsody:*:*)
+ echo powerpc-apple-rhapsody${UNAME_RELEASE}
+ exit ;;
+ *:Rhapsody:*:*)
+ echo ${UNAME_MACHINE}-apple-rhapsody${UNAME_RELEASE}
+ exit ;;
+ *:Darwin:*:*)
+ UNAME_PROCESSOR=`uname -p` || UNAME_PROCESSOR=unknown
+ case $UNAME_PROCESSOR in
+ unknown) UNAME_PROCESSOR=powerpc ;;
+ esac
+ echo ${UNAME_PROCESSOR}-apple-darwin${UNAME_RELEASE}
+ exit ;;
+ *:procnto*:*:* | *:QNX:[0123456789]*:*)
+ UNAME_PROCESSOR=`uname -p`
+ if test "$UNAME_PROCESSOR" = "x86"; then
+ UNAME_PROCESSOR=i386
+ UNAME_MACHINE=pc
+ fi
+ echo ${UNAME_PROCESSOR}-${UNAME_MACHINE}-nto-qnx${UNAME_RELEASE}
+ exit ;;
+ *:QNX:*:4*)
+ echo i386-pc-qnx
+ exit ;;
+ NSE-?:NONSTOP_KERNEL:*:*)
+ echo nse-tandem-nsk${UNAME_RELEASE}
+ exit ;;
+ NSR-?:NONSTOP_KERNEL:*:*)
+ echo nsr-tandem-nsk${UNAME_RELEASE}
+ exit ;;
+ *:NonStop-UX:*:*)
+ echo mips-compaq-nonstopux
+ exit ;;
+ BS2000:POSIX*:*:*)
+ echo bs2000-siemens-sysv
+ exit ;;
+ DS/*:UNIX_System_V:*:*)
+ echo ${UNAME_MACHINE}-${UNAME_SYSTEM}-${UNAME_RELEASE}
+ exit ;;
+ *:Plan9:*:*)
+ # "uname -m" is not consistent, so use $cputype instead. 386
+ # is converted to i386 for consistency with other x86
+ # operating systems.
+ if test "$cputype" = "386"; then
+ UNAME_MACHINE=i386
+ else
+ UNAME_MACHINE="$cputype"
+ fi
+ echo ${UNAME_MACHINE}-unknown-plan9
+ exit ;;
+ *:TOPS-10:*:*)
+ echo pdp10-unknown-tops10
+ exit ;;
+ *:TENEX:*:*)
+ echo pdp10-unknown-tenex
+ exit ;;
+ KS10:TOPS-20:*:* | KL10:TOPS-20:*:* | TYPE4:TOPS-20:*:*)
+ echo pdp10-dec-tops20
+ exit ;;
+ XKL-1:TOPS-20:*:* | TYPE5:TOPS-20:*:*)
+ echo pdp10-xkl-tops20
+ exit ;;
+ *:TOPS-20:*:*)
+ echo pdp10-unknown-tops20
+ exit ;;
+ *:ITS:*:*)
+ echo pdp10-unknown-its
+ exit ;;
+ SEI:*:*:SEIUX)
+ echo mips-sei-seiux${UNAME_RELEASE}
+ exit ;;
+ *:DragonFly:*:*)
+ echo ${UNAME_MACHINE}-unknown-dragonfly`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'`
+ exit ;;
+ *:*VMS:*:*)
+ UNAME_MACHINE=`(uname -p) 2>/dev/null`
+ case "${UNAME_MACHINE}" in
+ A*) echo alpha-dec-vms ; exit ;;
+ I*) echo ia64-dec-vms ; exit ;;
+ V*) echo vax-dec-vms ; exit ;;
+ esac ;;
+ *:XENIX:*:SysV)
+ echo i386-pc-xenix
+ exit ;;
+ i*86:skyos:*:*)
+ echo ${UNAME_MACHINE}-pc-skyos`echo ${UNAME_RELEASE}` | sed -e 's/ .*$//'
+ exit ;;
+ i*86:rdos:*:*)
+ echo ${UNAME_MACHINE}-pc-rdos
+ exit ;;
+ i*86:AROS:*:*)
+ echo ${UNAME_MACHINE}-pc-aros
+ exit ;;
+esac
+
+#echo '(No uname command or uname output not recognized.)' 1>&2
+#echo "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" 1>&2
+
+eval $set_cc_for_build
+cat >$dummy.c <<EOF
+#ifdef _SEQUENT_
+# include <sys/types.h>
+# include <sys/utsname.h>
+#endif
+main ()
+{
+#if defined (sony)
+#if defined (MIPSEB)
+ /* BFD wants "bsd" instead of "newsos". Perhaps BFD should be changed,
+ I don't know.... */
+ printf ("mips-sony-bsd\n"); exit (0);
+#else
+#include <sys/param.h>
+ printf ("m68k-sony-newsos%s\n",
+#ifdef NEWSOS4
+ "4"
+#else
+ ""
+#endif
+ ); exit (0);
+#endif
+#endif
+
+#if defined (__arm) && defined (__acorn) && defined (__unix)
+ printf ("arm-acorn-riscix\n"); exit (0);
+#endif
+
+#if defined (hp300) && !defined (hpux)
+ printf ("m68k-hp-bsd\n"); exit (0);
+#endif
+
+#if defined (NeXT)
+#if !defined (__ARCHITECTURE__)
+#define __ARCHITECTURE__ "m68k"
+#endif
+ int version;
+ version=`(hostinfo | sed -n 's/.*NeXT Mach \([0-9]*\).*/\1/p') 2>/dev/null`;
+ if (version < 4)
+ printf ("%s-next-nextstep%d\n", __ARCHITECTURE__, version);
+ else
+ printf ("%s-next-openstep%d\n", __ARCHITECTURE__, version);
+ exit (0);
+#endif
+
+#if defined (MULTIMAX) || defined (n16)
+#if defined (UMAXV)
+ printf ("ns32k-encore-sysv\n"); exit (0);
+#else
+#if defined (CMU)
+ printf ("ns32k-encore-mach\n"); exit (0);
+#else
+ printf ("ns32k-encore-bsd\n"); exit (0);
+#endif
+#endif
+#endif
+
+#if defined (__386BSD__)
+ printf ("i386-pc-bsd\n"); exit (0);
+#endif
+
+#if defined (sequent)
+#if defined (i386)
+ printf ("i386-sequent-dynix\n"); exit (0);
+#endif
+#if defined (ns32000)
+ printf ("ns32k-sequent-dynix\n"); exit (0);
+#endif
+#endif
+
+#if defined (_SEQUENT_)
+ struct utsname un;
+
+ uname(&un);
+
+ if (strncmp(un.version, "V2", 2) == 0) {
+ printf ("i386-sequent-ptx2\n"); exit (0);
+ }
+ if (strncmp(un.version, "V1", 2) == 0) { /* XXX is V1 correct? */
+ printf ("i386-sequent-ptx1\n"); exit (0);
+ }
+ printf ("i386-sequent-ptx\n"); exit (0);
+
+#endif
+
+#if defined (vax)
+# if !defined (ultrix)
+# include <sys/param.h>
+# if defined (BSD)
+# if BSD == 43
+ printf ("vax-dec-bsd4.3\n"); exit (0);
+# else
+# if BSD == 199006
+ printf ("vax-dec-bsd4.3reno\n"); exit (0);
+# else
+ printf ("vax-dec-bsd\n"); exit (0);
+# endif
+# endif
+# else
+ printf ("vax-dec-bsd\n"); exit (0);
+# endif
+# else
+ printf ("vax-dec-ultrix\n"); exit (0);
+# endif
+#endif
+
+#if defined (alliant) && defined (i860)
+ printf ("i860-alliant-bsd\n"); exit (0);
+#endif
+
+ exit (1);
+}
+EOF
+
+$CC_FOR_BUILD -o $dummy $dummy.c 2>/dev/null && SYSTEM_NAME=`$dummy` &&
+ { echo "$SYSTEM_NAME"; exit; }
+
+# Apollos put the system type in the environment.
+
+test -d /usr/apollo && { echo ${ISP}-apollo-${SYSTYPE}; exit; }
+
+# Convex versions that predate uname can use getsysinfo(1)
+
+if [ -x /usr/convex/getsysinfo ]
+then
+ case `getsysinfo -f cpu_type` in
+ c1*)
+ echo c1-convex-bsd
+ exit ;;
+ c2*)
+ if getsysinfo -f scalar_acc
+ then echo c32-convex-bsd
+ else echo c2-convex-bsd
+ fi
+ exit ;;
+ c34*)
+ echo c34-convex-bsd
+ exit ;;
+ c38*)
+ echo c38-convex-bsd
+ exit ;;
+ c4*)
+ echo c4-convex-bsd
+ exit ;;
+ esac
+fi
+
+cat >&2 <<EOF
+$0: unable to guess system type
+
+This script, last modified $timestamp, has failed to recognize
+the operating system you are using. It is advised that you
+download the most up to date version of the config scripts from
+
+ http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.guess;hb=HEAD
+and
+ http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.sub;hb=HEAD
+
+If the version you run ($0) is already up to date, please
+send the following data and any information you think might be
+pertinent to <config-patches@gnu.org> in order to provide the needed
+information to handle your system.
+
+config.guess timestamp = $timestamp
+
+uname -m = `(uname -m) 2>/dev/null || echo unknown`
+uname -r = `(uname -r) 2>/dev/null || echo unknown`
+uname -s = `(uname -s) 2>/dev/null || echo unknown`
+uname -v = `(uname -v) 2>/dev/null || echo unknown`
+
+/usr/bin/uname -p = `(/usr/bin/uname -p) 2>/dev/null`
+/bin/uname -X = `(/bin/uname -X) 2>/dev/null`
+
+hostinfo = `(hostinfo) 2>/dev/null`
+/bin/universe = `(/bin/universe) 2>/dev/null`
+/usr/bin/arch -k = `(/usr/bin/arch -k) 2>/dev/null`
+/bin/arch = `(/bin/arch) 2>/dev/null`
+/usr/bin/oslevel = `(/usr/bin/oslevel) 2>/dev/null`
+/usr/convex/getsysinfo = `(/usr/convex/getsysinfo) 2>/dev/null`
+
+UNAME_MACHINE = ${UNAME_MACHINE}
+UNAME_RELEASE = ${UNAME_RELEASE}
+UNAME_SYSTEM = ${UNAME_SYSTEM}
+UNAME_VERSION = ${UNAME_VERSION}
+EOF
+
+exit 1
+
+# Local variables:
+# eval: (add-hook 'write-file-hooks 'time-stamp)
+# time-stamp-start: "timestamp='"
+# time-stamp-format: "%:y-%02m-%02d"
+# time-stamp-end: "'"
+# End:
diff --git a/src/3rdparty/libpng/config.h.in b/src/3rdparty/libpng/config.h.in
new file mode 100644
index 0000000..fb23495
--- /dev/null
+++ b/src/3rdparty/libpng/config.h.in
@@ -0,0 +1,86 @@
+/* config.h.in. Generated from configure.ac by autoheader. */
+
+/* Define to 1 if you have the <dlfcn.h> header file. */
+#undef HAVE_DLFCN_H
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#undef HAVE_INTTYPES_H
+
+/* Define to 1 if you have the `m' library (-lm). */
+#undef HAVE_LIBM
+
+/* Define to 1 if you have the `z' library (-lz). */
+#undef HAVE_LIBZ
+
+/* Define to 1 if you have the <malloc.h> header file. */
+#undef HAVE_MALLOC_H
+
+/* Define to 1 if you have the <memory.h> header file. */
+#undef HAVE_MEMORY_H
+
+/* Define to 1 if you have the `memset' function. */
+#undef HAVE_MEMSET
+
+/* Define to 1 if you have the `pow' function. */
+#undef HAVE_POW
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#undef HAVE_STDINT_H
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#undef HAVE_STDLIB_H
+
+/* Define to 1 if you have the <strings.h> header file. */
+#undef HAVE_STRINGS_H
+
+/* Define to 1 if you have the <string.h> header file. */
+#undef HAVE_STRING_H
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#undef HAVE_SYS_STAT_H
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#undef HAVE_SYS_TYPES_H
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#undef HAVE_UNISTD_H
+
+/* Define to the sub-directory in which libtool stores uninstalled libraries.
+ */
+#undef LT_OBJDIR
+
+/* Name of package */
+#undef PACKAGE
+
+/* Define to the address where bug reports for this package should be sent. */
+#undef PACKAGE_BUGREPORT
+
+/* Define to the full name of this package. */
+#undef PACKAGE_NAME
+
+/* Define to the full name and version of this package. */
+#undef PACKAGE_STRING
+
+/* Define to the one symbol short name of this package. */
+#undef PACKAGE_TARNAME
+
+/* Define to the home page for this package. */
+#undef PACKAGE_URL
+
+/* Define to the version of this package. */
+#undef PACKAGE_VERSION
+
+/* Define to 1 if you have the ANSI C header files. */
+#undef STDC_HEADERS
+
+/* Define to 1 if your <sys/time.h> declares `struct tm'. */
+#undef TM_IN_SYS_TIME
+
+/* Version number of package */
+#undef VERSION
+
+/* Define to empty if `const' does not conform to ANSI C. */
+#undef const
+
+/* Define to `unsigned int' if <sys/types.h> does not define. */
+#undef size_t
diff --git a/src/3rdparty/libpng/config.sub b/src/3rdparty/libpng/config.sub
new file mode 100755
index 0000000..a39437d
--- /dev/null
+++ b/src/3rdparty/libpng/config.sub
@@ -0,0 +1,1686 @@
+#! /bin/sh
+# Configuration validation subroutine script.
+# Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
+# 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
+# Free Software Foundation, Inc.
+
+timestamp='2009-04-17'
+
+# This file is (in principle) common to ALL GNU software.
+# The presence of a machine in this file suggests that SOME GNU software
+# can handle that machine. It does not imply ALL GNU software can.
+#
+# This file is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
+# 02110-1301, USA.
+#
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that program.
+
+
+# Please send patches to <config-patches@gnu.org>. Submit a context
+# diff and a properly formatted ChangeLog entry.
+#
+# Configuration subroutine to validate and canonicalize a configuration type.
+# Supply the specified configuration type as an argument.
+# If it is invalid, we print an error message on stderr and exit with code 1.
+# Otherwise, we print the canonical config type on stdout and succeed.
+
+# This file is supposed to be the same for all GNU packages
+# and recognize all the CPU types, system types and aliases
+# that are meaningful with *any* GNU software.
+# Each package is responsible for reporting which valid configurations
+# it does not support. The user should be able to distinguish
+# a failure to support a valid configuration from a meaningless
+# configuration.
+
+# The goal of this file is to map all the various variations of a given
+# machine specification into a single specification in the form:
+# CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM
+# or in some cases, the newer four-part form:
+# CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM
+# It is wrong to echo any other type of specification.
+
+me=`echo "$0" | sed -e 's,.*/,,'`
+
+usage="\
+Usage: $0 [OPTION] CPU-MFR-OPSYS
+ $0 [OPTION] ALIAS
+
+Canonicalize a configuration name.
+
+Operation modes:
+ -h, --help print this help, then exit
+ -t, --time-stamp print date of last modification, then exit
+ -v, --version print version number, then exit
+
+Report bugs and patches to <config-patches@gnu.org>."
+
+version="\
+GNU config.sub ($timestamp)
+
+Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
+2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
+
+This is free software; see the source for copying conditions. There is NO
+warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
+
+help="
+Try \`$me --help' for more information."
+
+# Parse command line
+while test $# -gt 0 ; do
+ case $1 in
+ --time-stamp | --time* | -t )
+ echo "$timestamp" ; exit ;;
+ --version | -v )
+ echo "$version" ; exit ;;
+ --help | --h* | -h )
+ echo "$usage"; exit ;;
+ -- ) # Stop option processing
+ shift; break ;;
+ - ) # Use stdin as input.
+ break ;;
+ -* )
+ echo "$me: invalid option $1$help"
+ exit 1 ;;
+
+ *local*)
+ # First pass through any local machine types.
+ echo $1
+ exit ;;
+
+ * )
+ break ;;
+ esac
+done
+
+case $# in
+ 0) echo "$me: missing argument$help" >&2
+ exit 1;;
+ 1) ;;
+ *) echo "$me: too many arguments$help" >&2
+ exit 1;;
+esac
+
+# Separate what the user gave into CPU-COMPANY and OS or KERNEL-OS (if any).
+# Here we must recognize all the valid KERNEL-OS combinations.
+maybe_os=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\2/'`
+case $maybe_os in
+ nto-qnx* | linux-gnu* | linux-dietlibc | linux-newlib* | linux-uclibc* | \
+ uclinux-uclibc* | uclinux-gnu* | kfreebsd*-gnu* | knetbsd*-gnu* | netbsd*-gnu* | \
+ kopensolaris*-gnu* | \
+ storm-chaos* | os2-emx* | rtmk-nova*)
+ os=-$maybe_os
+ basic_machine=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\1/'`
+ ;;
+ *)
+ basic_machine=`echo $1 | sed 's/-[^-]*$//'`
+ if [ $basic_machine != $1 ]
+ then os=`echo $1 | sed 's/.*-/-/'`
+ else os=; fi
+ ;;
+esac
+
+### Let's recognize common machines as not being operating systems so
+### that things like config.sub decstation-3100 work. We also
+### recognize some manufacturers as not being operating systems, so we
+### can provide default operating systems below.
+case $os in
+ -sun*os*)
+ # Prevent following clause from handling this invalid input.
+ ;;
+ -dec* | -mips* | -sequent* | -encore* | -pc532* | -sgi* | -sony* | \
+ -att* | -7300* | -3300* | -delta* | -motorola* | -sun[234]* | \
+ -unicom* | -ibm* | -next | -hp | -isi* | -apollo | -altos* | \
+ -convergent* | -ncr* | -news | -32* | -3600* | -3100* | -hitachi* |\
+ -c[123]* | -convex* | -sun | -crds | -omron* | -dg | -ultra | -tti* | \
+ -harris | -dolphin | -highlevel | -gould | -cbm | -ns | -masscomp | \
+ -apple | -axis | -knuth | -cray)
+ os=
+ basic_machine=$1
+ ;;
+ -sim | -cisco | -oki | -wec | -winbond)
+ os=
+ basic_machine=$1
+ ;;
+ -scout)
+ ;;
+ -wrs)
+ os=-vxworks
+ basic_machine=$1
+ ;;
+ -chorusos*)
+ os=-chorusos
+ basic_machine=$1
+ ;;
+ -chorusrdb)
+ os=-chorusrdb
+ basic_machine=$1
+ ;;
+ -hiux*)
+ os=-hiuxwe2
+ ;;
+ -sco6)
+ os=-sco5v6
+ basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+ ;;
+ -sco5)
+ os=-sco3.2v5
+ basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+ ;;
+ -sco4)
+ os=-sco3.2v4
+ basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+ ;;
+ -sco3.2.[4-9]*)
+ os=`echo $os | sed -e 's/sco3.2./sco3.2v/'`
+ basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+ ;;
+ -sco3.2v[4-9]*)
+ # Don't forget version if it is 3.2v4 or newer.
+ basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+ ;;
+ -sco5v6*)
+ # Don't forget version if it is 3.2v4 or newer.
+ basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+ ;;
+ -sco*)
+ os=-sco3.2v2
+ basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+ ;;
+ -udk*)
+ basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+ ;;
+ -isc)
+ os=-isc2.2
+ basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+ ;;
+ -clix*)
+ basic_machine=clipper-intergraph
+ ;;
+ -isc*)
+ basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+ ;;
+ -lynx*)
+ os=-lynxos
+ ;;
+ -ptx*)
+ basic_machine=`echo $1 | sed -e 's/86-.*/86-sequent/'`
+ ;;
+ -windowsnt*)
+ os=`echo $os | sed -e 's/windowsnt/winnt/'`
+ ;;
+ -psos*)
+ os=-psos
+ ;;
+ -mint | -mint[0-9]*)
+ basic_machine=m68k-atari
+ os=-mint
+ ;;
+esac
+
+# Decode aliases for certain CPU-COMPANY combinations.
+case $basic_machine in
+ # Recognize the basic CPU types without company name.
+ # Some are omitted here because they have special meanings below.
+ 1750a | 580 \
+ | a29k \
+ | alpha | alphaev[4-8] | alphaev56 | alphaev6[78] | alphapca5[67] \
+ | alpha64 | alpha64ev[4-8] | alpha64ev56 | alpha64ev6[78] | alpha64pca5[67] \
+ | am33_2.0 \
+ | arc | arm | arm[bl]e | arme[lb] | armv[2345] | armv[345][lb] | avr | avr32 \
+ | bfin \
+ | c4x | clipper \
+ | d10v | d30v | dlx | dsp16xx \
+ | fido | fr30 | frv \
+ | h8300 | h8500 | hppa | hppa1.[01] | hppa2.0 | hppa2.0[nw] | hppa64 \
+ | i370 | i860 | i960 | ia64 \
+ | ip2k | iq2000 \
+ | lm32 \
+ | m32c | m32r | m32rle | m68000 | m68k | m88k \
+ | maxq | mb | microblaze | mcore | mep | metag \
+ | mips | mipsbe | mipseb | mipsel | mipsle \
+ | mips16 \
+ | mips64 | mips64el \
+ | mips64octeon | mips64octeonel \
+ | mips64orion | mips64orionel \
+ | mips64r5900 | mips64r5900el \
+ | mips64vr | mips64vrel \
+ | mips64vr4100 | mips64vr4100el \
+ | mips64vr4300 | mips64vr4300el \
+ | mips64vr5000 | mips64vr5000el \
+ | mips64vr5900 | mips64vr5900el \
+ | mipsisa32 | mipsisa32el \
+ | mipsisa32r2 | mipsisa32r2el \
+ | mipsisa64 | mipsisa64el \
+ | mipsisa64r2 | mipsisa64r2el \
+ | mipsisa64sb1 | mipsisa64sb1el \
+ | mipsisa64sr71k | mipsisa64sr71kel \
+ | mipstx39 | mipstx39el \
+ | mn10200 | mn10300 \
+ | moxie \
+ | mt \
+ | msp430 \
+ | nios | nios2 \
+ | ns16k | ns32k \
+ | or32 \
+ | pdp10 | pdp11 | pj | pjl \
+ | powerpc | powerpc64 | powerpc64le | powerpcle | ppcbe \
+ | pyramid \
+ | score \
+ | sh | sh[1234] | sh[24]a | sh[24]aeb | sh[23]e | sh[34]eb | sheb | shbe | shle | sh[1234]le | sh3ele \
+ | sh64 | sh64le \
+ | sparc | sparc64 | sparc64b | sparc64v | sparc86x | sparclet | sparclite \
+ | sparcv8 | sparcv9 | sparcv9b | sparcv9v \
+ | spu | strongarm \
+ | tahoe | thumb | tic4x | tic80 | tron \
+ | v850 | v850e \
+ | we32k \
+ | x86 | xc16x | xscale | xscalee[bl] | xstormy16 | xtensa \
+ | z8k | z80)
+ basic_machine=$basic_machine-unknown
+ ;;
+ m6811 | m68hc11 | m6812 | m68hc12)
+ # Motorola 68HC11/12.
+ basic_machine=$basic_machine-unknown
+ os=-none
+ ;;
+ m88110 | m680[12346]0 | m683?2 | m68360 | m5200 | v70 | w65 | z8k)
+ ;;
+ ms1)
+ basic_machine=mt-unknown
+ ;;
+
+ # We use `pc' rather than `unknown'
+ # because (1) that's what they normally are, and
+ # (2) the word "unknown" tends to confuse beginning users.
+ i*86 | x86_64)
+ basic_machine=$basic_machine-pc
+ ;;
+ # Object if more than one company name word.
+ *-*-*)
+ echo Invalid configuration \`$1\': machine \`$basic_machine\' not recognized 1>&2
+ exit 1
+ ;;
+ # Recognize the basic CPU types with company name.
+ 580-* \
+ | a29k-* \
+ | alpha-* | alphaev[4-8]-* | alphaev56-* | alphaev6[78]-* \
+ | alpha64-* | alpha64ev[4-8]-* | alpha64ev56-* | alpha64ev6[78]-* \
+ | alphapca5[67]-* | alpha64pca5[67]-* | arc-* \
+ | arm-* | armbe-* | armle-* | armeb-* | armv*-* \
+ | avr-* | avr32-* \
+ | bfin-* | bs2000-* \
+ | c[123]* | c30-* | [cjt]90-* | c4x-* | c54x-* | c55x-* | c6x-* \
+ | clipper-* | craynv-* | cydra-* \
+ | d10v-* | d30v-* | dlx-* \
+ | elxsi-* \
+ | f30[01]-* | f700-* | fido-* | fr30-* | frv-* | fx80-* \
+ | h8300-* | h8500-* \
+ | hppa-* | hppa1.[01]-* | hppa2.0-* | hppa2.0[nw]-* | hppa64-* \
+ | i*86-* | i860-* | i960-* | ia64-* \
+ | ip2k-* | iq2000-* \
+ | lm32-* \
+ | m32c-* | m32r-* | m32rle-* \
+ | m68000-* | m680[012346]0-* | m68360-* | m683?2-* | m68k-* \
+ | m88110-* | m88k-* | maxq-* | mcore-* | metag-* \
+ | mips-* | mipsbe-* | mipseb-* | mipsel-* | mipsle-* \
+ | mips16-* \
+ | mips64-* | mips64el-* \
+ | mips64octeon-* | mips64octeonel-* \
+ | mips64orion-* | mips64orionel-* \
+ | mips64r5900-* | mips64r5900el-* \
+ | mips64vr-* | mips64vrel-* \
+ | mips64vr4100-* | mips64vr4100el-* \
+ | mips64vr4300-* | mips64vr4300el-* \
+ | mips64vr5000-* | mips64vr5000el-* \
+ | mips64vr5900-* | mips64vr5900el-* \
+ | mipsisa32-* | mipsisa32el-* \
+ | mipsisa32r2-* | mipsisa32r2el-* \
+ | mipsisa64-* | mipsisa64el-* \
+ | mipsisa64r2-* | mipsisa64r2el-* \
+ | mipsisa64sb1-* | mipsisa64sb1el-* \
+ | mipsisa64sr71k-* | mipsisa64sr71kel-* \
+ | mipstx39-* | mipstx39el-* \
+ | mmix-* \
+ | mt-* \
+ | msp430-* \
+ | nios-* | nios2-* \
+ | none-* | np1-* | ns16k-* | ns32k-* \
+ | orion-* \
+ | pdp10-* | pdp11-* | pj-* | pjl-* | pn-* | power-* \
+ | powerpc-* | powerpc64-* | powerpc64le-* | powerpcle-* | ppcbe-* \
+ | pyramid-* \
+ | romp-* | rs6000-* \
+ | sh-* | sh[1234]-* | sh[24]a-* | sh[24]aeb-* | sh[23]e-* | sh[34]eb-* | sheb-* | shbe-* \
+ | shle-* | sh[1234]le-* | sh3ele-* | sh64-* | sh64le-* \
+ | sparc-* | sparc64-* | sparc64b-* | sparc64v-* | sparc86x-* | sparclet-* \
+ | sparclite-* \
+ | sparcv8-* | sparcv9-* | sparcv9b-* | sparcv9v-* | strongarm-* | sv1-* | sx?-* \
+ | tahoe-* | thumb-* \
+ | tic30-* | tic4x-* | tic54x-* | tic55x-* | tic6x-* | tic80-* | tile-* \
+ | tron-* \
+ | v850-* | v850e-* | vax-* \
+ | we32k-* \
+ | x86-* | x86_64-* | xc16x-* | xps100-* | xscale-* | xscalee[bl]-* \
+ | xstormy16-* | xtensa*-* \
+ | ymp-* \
+ | z8k-* | z80-*)
+ ;;
+ # Recognize the basic CPU types without company name, with glob match.
+ xtensa*)
+ basic_machine=$basic_machine-unknown
+ ;;
+ # Recognize the various machine names and aliases which stand
+ # for a CPU type and a company and sometimes even an OS.
+ 386bsd)
+ basic_machine=i386-unknown
+ os=-bsd
+ ;;
+ 3b1 | 7300 | 7300-att | att-7300 | pc7300 | safari | unixpc)
+ basic_machine=m68000-att
+ ;;
+ 3b*)
+ basic_machine=we32k-att
+ ;;
+ a29khif)
+ basic_machine=a29k-amd
+ os=-udi
+ ;;
+ abacus)
+ basic_machine=abacus-unknown
+ ;;
+ adobe68k)
+ basic_machine=m68010-adobe
+ os=-scout
+ ;;
+ alliant | fx80)
+ basic_machine=fx80-alliant
+ ;;
+ altos | altos3068)
+ basic_machine=m68k-altos
+ ;;
+ am29k)
+ basic_machine=a29k-none
+ os=-bsd
+ ;;
+ amd64)
+ basic_machine=x86_64-pc
+ ;;
+ amd64-*)
+ basic_machine=x86_64-`echo $basic_machine | sed 's/^[^-]*-//'`
+ ;;
+ amdahl)
+ basic_machine=580-amdahl
+ os=-sysv
+ ;;
+ amiga | amiga-*)
+ basic_machine=m68k-unknown
+ ;;
+ amigaos | amigados)
+ basic_machine=m68k-unknown
+ os=-amigaos
+ ;;
+ amigaunix | amix)
+ basic_machine=m68k-unknown
+ os=-sysv4
+ ;;
+ apollo68)
+ basic_machine=m68k-apollo
+ os=-sysv
+ ;;
+ apollo68bsd)
+ basic_machine=m68k-apollo
+ os=-bsd
+ ;;
+ aros)
+ basic_machine=i386-pc
+ os=-aros
+ ;;
+ aux)
+ basic_machine=m68k-apple
+ os=-aux
+ ;;
+ balance)
+ basic_machine=ns32k-sequent
+ os=-dynix
+ ;;
+ blackfin)
+ basic_machine=bfin-unknown
+ os=-linux
+ ;;
+ blackfin-*)
+ basic_machine=bfin-`echo $basic_machine | sed 's/^[^-]*-//'`
+ os=-linux
+ ;;
+ c90)
+ basic_machine=c90-cray
+ os=-unicos
+ ;;
+ cegcc)
+ basic_machine=arm-unknown
+ os=-cegcc
+ ;;
+ convex-c1)
+ basic_machine=c1-convex
+ os=-bsd
+ ;;
+ convex-c2)
+ basic_machine=c2-convex
+ os=-bsd
+ ;;
+ convex-c32)
+ basic_machine=c32-convex
+ os=-bsd
+ ;;
+ convex-c34)
+ basic_machine=c34-convex
+ os=-bsd
+ ;;
+ convex-c38)
+ basic_machine=c38-convex
+ os=-bsd
+ ;;
+ cray | j90)
+ basic_machine=j90-cray
+ os=-unicos
+ ;;
+ craynv)
+ basic_machine=craynv-cray
+ os=-unicosmp
+ ;;
+ cr16)
+ basic_machine=cr16-unknown
+ os=-elf
+ ;;
+ crds | unos)
+ basic_machine=m68k-crds
+ ;;
+ crisv32 | crisv32-* | etraxfs*)
+ basic_machine=crisv32-axis
+ ;;
+ cris | cris-* | etrax*)
+ basic_machine=cris-axis
+ ;;
+ crx)
+ basic_machine=crx-unknown
+ os=-elf
+ ;;
+ da30 | da30-*)
+ basic_machine=m68k-da30
+ ;;
+ decstation | decstation-3100 | pmax | pmax-* | pmin | dec3100 | decstatn)
+ basic_machine=mips-dec
+ ;;
+ decsystem10* | dec10*)
+ basic_machine=pdp10-dec
+ os=-tops10
+ ;;
+ decsystem20* | dec20*)
+ basic_machine=pdp10-dec
+ os=-tops20
+ ;;
+ delta | 3300 | motorola-3300 | motorola-delta \
+ | 3300-motorola | delta-motorola)
+ basic_machine=m68k-motorola
+ ;;
+ delta88)
+ basic_machine=m88k-motorola
+ os=-sysv3
+ ;;
+ dicos)
+ basic_machine=i686-pc
+ os=-dicos
+ ;;
+ djgpp)
+ basic_machine=i586-pc
+ os=-msdosdjgpp
+ ;;
+ dpx20 | dpx20-*)
+ basic_machine=rs6000-bull
+ os=-bosx
+ ;;
+ dpx2* | dpx2*-bull)
+ basic_machine=m68k-bull
+ os=-sysv3
+ ;;
+ ebmon29k)
+ basic_machine=a29k-amd
+ os=-ebmon
+ ;;
+ elxsi)
+ basic_machine=elxsi-elxsi
+ os=-bsd
+ ;;
+ encore | umax | mmax)
+ basic_machine=ns32k-encore
+ ;;
+ es1800 | OSE68k | ose68k | ose | OSE)
+ basic_machine=m68k-ericsson
+ os=-ose
+ ;;
+ fx2800)
+ basic_machine=i860-alliant
+ ;;
+ genix)
+ basic_machine=ns32k-ns
+ ;;
+ gmicro)
+ basic_machine=tron-gmicro
+ os=-sysv
+ ;;
+ go32)
+ basic_machine=i386-pc
+ os=-go32
+ ;;
+ h3050r* | hiux*)
+ basic_machine=hppa1.1-hitachi
+ os=-hiuxwe2
+ ;;
+ h8300hms)
+ basic_machine=h8300-hitachi
+ os=-hms
+ ;;
+ h8300xray)
+ basic_machine=h8300-hitachi
+ os=-xray
+ ;;
+ h8500hms)
+ basic_machine=h8500-hitachi
+ os=-hms
+ ;;
+ harris)
+ basic_machine=m88k-harris
+ os=-sysv3
+ ;;
+ hp300-*)
+ basic_machine=m68k-hp
+ ;;
+ hp300bsd)
+ basic_machine=m68k-hp
+ os=-bsd
+ ;;
+ hp300hpux)
+ basic_machine=m68k-hp
+ os=-hpux
+ ;;
+ hp3k9[0-9][0-9] | hp9[0-9][0-9])
+ basic_machine=hppa1.0-hp
+ ;;
+ hp9k2[0-9][0-9] | hp9k31[0-9])
+ basic_machine=m68000-hp
+ ;;
+ hp9k3[2-9][0-9])
+ basic_machine=m68k-hp
+ ;;
+ hp9k6[0-9][0-9] | hp6[0-9][0-9])
+ basic_machine=hppa1.0-hp
+ ;;
+ hp9k7[0-79][0-9] | hp7[0-79][0-9])
+ basic_machine=hppa1.1-hp
+ ;;
+ hp9k78[0-9] | hp78[0-9])
+ # FIXME: really hppa2.0-hp
+ basic_machine=hppa1.1-hp
+ ;;
+ hp9k8[67]1 | hp8[67]1 | hp9k80[24] | hp80[24] | hp9k8[78]9 | hp8[78]9 | hp9k893 | hp893)
+ # FIXME: really hppa2.0-hp
+ basic_machine=hppa1.1-hp
+ ;;
+ hp9k8[0-9][13679] | hp8[0-9][13679])
+ basic_machine=hppa1.1-hp
+ ;;
+ hp9k8[0-9][0-9] | hp8[0-9][0-9])
+ basic_machine=hppa1.0-hp
+ ;;
+ hppa-next)
+ os=-nextstep3
+ ;;
+ hppaosf)
+ basic_machine=hppa1.1-hp
+ os=-osf
+ ;;
+ hppro)
+ basic_machine=hppa1.1-hp
+ os=-proelf
+ ;;
+ i370-ibm* | ibm*)
+ basic_machine=i370-ibm
+ ;;
+# I'm not sure what "Sysv32" means. Should this be sysv3.2?
+ i*86v32)
+ basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`
+ os=-sysv32
+ ;;
+ i*86v4*)
+ basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`
+ os=-sysv4
+ ;;
+ i*86v)
+ basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`
+ os=-sysv
+ ;;
+ i*86sol2)
+ basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`
+ os=-solaris2
+ ;;
+ i386mach)
+ basic_machine=i386-mach
+ os=-mach
+ ;;
+ i386-vsta | vsta)
+ basic_machine=i386-unknown
+ os=-vsta
+ ;;
+ iris | iris4d)
+ basic_machine=mips-sgi
+ case $os in
+ -irix*)
+ ;;
+ *)
+ os=-irix4
+ ;;
+ esac
+ ;;
+ isi68 | isi)
+ basic_machine=m68k-isi
+ os=-sysv
+ ;;
+ m68knommu)
+ basic_machine=m68k-unknown
+ os=-linux
+ ;;
+ m68knommu-*)
+ basic_machine=m68k-`echo $basic_machine | sed 's/^[^-]*-//'`
+ os=-linux
+ ;;
+ m88k-omron*)
+ basic_machine=m88k-omron
+ ;;
+ magnum | m3230)
+ basic_machine=mips-mips
+ os=-sysv
+ ;;
+ merlin)
+ basic_machine=ns32k-utek
+ os=-sysv
+ ;;
+ mingw32)
+ basic_machine=i386-pc
+ os=-mingw32
+ ;;
+ mingw32ce)
+ basic_machine=arm-unknown
+ os=-mingw32ce
+ ;;
+ miniframe)
+ basic_machine=m68000-convergent
+ ;;
+ *mint | -mint[0-9]* | *MiNT | *MiNT[0-9]*)
+ basic_machine=m68k-atari
+ os=-mint
+ ;;
+ mips3*-*)
+ basic_machine=`echo $basic_machine | sed -e 's/mips3/mips64/'`
+ ;;
+ mips3*)
+ basic_machine=`echo $basic_machine | sed -e 's/mips3/mips64/'`-unknown
+ ;;
+ monitor)
+ basic_machine=m68k-rom68k
+ os=-coff
+ ;;
+ morphos)
+ basic_machine=powerpc-unknown
+ os=-morphos
+ ;;
+ msdos)
+ basic_machine=i386-pc
+ os=-msdos
+ ;;
+ ms1-*)
+ basic_machine=`echo $basic_machine | sed -e 's/ms1-/mt-/'`
+ ;;
+ mvs)
+ basic_machine=i370-ibm
+ os=-mvs
+ ;;
+ ncr3000)
+ basic_machine=i486-ncr
+ os=-sysv4
+ ;;
+ netbsd386)
+ basic_machine=i386-unknown
+ os=-netbsd
+ ;;
+ netwinder)
+ basic_machine=armv4l-rebel
+ os=-linux
+ ;;
+ news | news700 | news800 | news900)
+ basic_machine=m68k-sony
+ os=-newsos
+ ;;
+ news1000)
+ basic_machine=m68030-sony
+ os=-newsos
+ ;;
+ news-3600 | risc-news)
+ basic_machine=mips-sony
+ os=-newsos
+ ;;
+ necv70)
+ basic_machine=v70-nec
+ os=-sysv
+ ;;
+ next | m*-next )
+ basic_machine=m68k-next
+ case $os in
+ -nextstep* )
+ ;;
+ -ns2*)
+ os=-nextstep2
+ ;;
+ *)
+ os=-nextstep3
+ ;;
+ esac
+ ;;
+ nh3000)
+ basic_machine=m68k-harris
+ os=-cxux
+ ;;
+ nh[45]000)
+ basic_machine=m88k-harris
+ os=-cxux
+ ;;
+ nindy960)
+ basic_machine=i960-intel
+ os=-nindy
+ ;;
+ mon960)
+ basic_machine=i960-intel
+ os=-mon960
+ ;;
+ nonstopux)
+ basic_machine=mips-compaq
+ os=-nonstopux
+ ;;
+ np1)
+ basic_machine=np1-gould
+ ;;
+ nsr-tandem)
+ basic_machine=nsr-tandem
+ ;;
+ op50n-* | op60c-*)
+ basic_machine=hppa1.1-oki
+ os=-proelf
+ ;;
+ openrisc | openrisc-*)
+ basic_machine=or32-unknown
+ ;;
+ os400)
+ basic_machine=powerpc-ibm
+ os=-os400
+ ;;
+ OSE68000 | ose68000)
+ basic_machine=m68000-ericsson
+ os=-ose
+ ;;
+ os68k)
+ basic_machine=m68k-none
+ os=-os68k
+ ;;
+ pa-hitachi)
+ basic_machine=hppa1.1-hitachi
+ os=-hiuxwe2
+ ;;
+ paragon)
+ basic_machine=i860-intel
+ os=-osf
+ ;;
+ parisc)
+ basic_machine=hppa-unknown
+ os=-linux
+ ;;
+ parisc-*)
+ basic_machine=hppa-`echo $basic_machine | sed 's/^[^-]*-//'`
+ os=-linux
+ ;;
+ pbd)
+ basic_machine=sparc-tti
+ ;;
+ pbb)
+ basic_machine=m68k-tti
+ ;;
+ pc532 | pc532-*)
+ basic_machine=ns32k-pc532
+ ;;
+ pc98)
+ basic_machine=i386-pc
+ ;;
+ pc98-*)
+ basic_machine=i386-`echo $basic_machine | sed 's/^[^-]*-//'`
+ ;;
+ pentium | p5 | k5 | k6 | nexgen | viac3)
+ basic_machine=i586-pc
+ ;;
+ pentiumpro | p6 | 6x86 | athlon | athlon_*)
+ basic_machine=i686-pc
+ ;;
+ pentiumii | pentium2 | pentiumiii | pentium3)
+ basic_machine=i686-pc
+ ;;
+ pentium4)
+ basic_machine=i786-pc
+ ;;
+ pentium-* | p5-* | k5-* | k6-* | nexgen-* | viac3-*)
+ basic_machine=i586-`echo $basic_machine | sed 's/^[^-]*-//'`
+ ;;
+ pentiumpro-* | p6-* | 6x86-* | athlon-*)
+ basic_machine=i686-`echo $basic_machine | sed 's/^[^-]*-//'`
+ ;;
+ pentiumii-* | pentium2-* | pentiumiii-* | pentium3-*)
+ basic_machine=i686-`echo $basic_machine | sed 's/^[^-]*-//'`
+ ;;
+ pentium4-*)
+ basic_machine=i786-`echo $basic_machine | sed 's/^[^-]*-//'`
+ ;;
+ pn)
+ basic_machine=pn-gould
+ ;;
+ power) basic_machine=power-ibm
+ ;;
+ ppc) basic_machine=powerpc-unknown
+ ;;
+ ppc-*) basic_machine=powerpc-`echo $basic_machine | sed 's/^[^-]*-//'`
+ ;;
+ ppcle | powerpclittle | ppc-le | powerpc-little)
+ basic_machine=powerpcle-unknown
+ ;;
+ ppcle-* | powerpclittle-*)
+ basic_machine=powerpcle-`echo $basic_machine | sed 's/^[^-]*-//'`
+ ;;
+ ppc64) basic_machine=powerpc64-unknown
+ ;;
+ ppc64-*) basic_machine=powerpc64-`echo $basic_machine | sed 's/^[^-]*-//'`
+ ;;
+ ppc64le | powerpc64little | ppc64-le | powerpc64-little)
+ basic_machine=powerpc64le-unknown
+ ;;
+ ppc64le-* | powerpc64little-*)
+ basic_machine=powerpc64le-`echo $basic_machine | sed 's/^[^-]*-//'`
+ ;;
+ ps2)
+ basic_machine=i386-ibm
+ ;;
+ pw32)
+ basic_machine=i586-unknown
+ os=-pw32
+ ;;
+ rdos)
+ basic_machine=i386-pc
+ os=-rdos
+ ;;
+ rom68k)
+ basic_machine=m68k-rom68k
+ os=-coff
+ ;;
+ rm[46]00)
+ basic_machine=mips-siemens
+ ;;
+ rtpc | rtpc-*)
+ basic_machine=romp-ibm
+ ;;
+ s390 | s390-*)
+ basic_machine=s390-ibm
+ ;;
+ s390x | s390x-*)
+ basic_machine=s390x-ibm
+ ;;
+ sa29200)
+ basic_machine=a29k-amd
+ os=-udi
+ ;;
+ sb1)
+ basic_machine=mipsisa64sb1-unknown
+ ;;
+ sb1el)
+ basic_machine=mipsisa64sb1el-unknown
+ ;;
+ sde)
+ basic_machine=mipsisa32-sde
+ os=-elf
+ ;;
+ sei)
+ basic_machine=mips-sei
+ os=-seiux
+ ;;
+ sequent)
+ basic_machine=i386-sequent
+ ;;
+ sh)
+ basic_machine=sh-hitachi
+ os=-hms
+ ;;
+ sh5el)
+ basic_machine=sh5le-unknown
+ ;;
+ sh64)
+ basic_machine=sh64-unknown
+ ;;
+ sparclite-wrs | simso-wrs)
+ basic_machine=sparclite-wrs
+ os=-vxworks
+ ;;
+ sps7)
+ basic_machine=m68k-bull
+ os=-sysv2
+ ;;
+ spur)
+ basic_machine=spur-unknown
+ ;;
+ st2000)
+ basic_machine=m68k-tandem
+ ;;
+ stratus)
+ basic_machine=i860-stratus
+ os=-sysv4
+ ;;
+ sun2)
+ basic_machine=m68000-sun
+ ;;
+ sun2os3)
+ basic_machine=m68000-sun
+ os=-sunos3
+ ;;
+ sun2os4)
+ basic_machine=m68000-sun
+ os=-sunos4
+ ;;
+ sun3os3)
+ basic_machine=m68k-sun
+ os=-sunos3
+ ;;
+ sun3os4)
+ basic_machine=m68k-sun
+ os=-sunos4
+ ;;
+ sun4os3)
+ basic_machine=sparc-sun
+ os=-sunos3
+ ;;
+ sun4os4)
+ basic_machine=sparc-sun
+ os=-sunos4
+ ;;
+ sun4sol2)
+ basic_machine=sparc-sun
+ os=-solaris2
+ ;;
+ sun3 | sun3-*)
+ basic_machine=m68k-sun
+ ;;
+ sun4)
+ basic_machine=sparc-sun
+ ;;
+ sun386 | sun386i | roadrunner)
+ basic_machine=i386-sun
+ ;;
+ sv1)
+ basic_machine=sv1-cray
+ os=-unicos
+ ;;
+ symmetry)
+ basic_machine=i386-sequent
+ os=-dynix
+ ;;
+ t3e)
+ basic_machine=alphaev5-cray
+ os=-unicos
+ ;;
+ t90)
+ basic_machine=t90-cray
+ os=-unicos
+ ;;
+ tic54x | c54x*)
+ basic_machine=tic54x-unknown
+ os=-coff
+ ;;
+ tic55x | c55x*)
+ basic_machine=tic55x-unknown
+ os=-coff
+ ;;
+ tic6x | c6x*)
+ basic_machine=tic6x-unknown
+ os=-coff
+ ;;
+ tile*)
+ basic_machine=tile-unknown
+ os=-linux-gnu
+ ;;
+ tx39)
+ basic_machine=mipstx39-unknown
+ ;;
+ tx39el)
+ basic_machine=mipstx39el-unknown
+ ;;
+ toad1)
+ basic_machine=pdp10-xkl
+ os=-tops20
+ ;;
+ tower | tower-32)
+ basic_machine=m68k-ncr
+ ;;
+ tpf)
+ basic_machine=s390x-ibm
+ os=-tpf
+ ;;
+ udi29k)
+ basic_machine=a29k-amd
+ os=-udi
+ ;;
+ ultra3)
+ basic_machine=a29k-nyu
+ os=-sym1
+ ;;
+ v810 | necv810)
+ basic_machine=v810-nec
+ os=-none
+ ;;
+ vaxv)
+ basic_machine=vax-dec
+ os=-sysv
+ ;;
+ vms)
+ basic_machine=vax-dec
+ os=-vms
+ ;;
+ vpp*|vx|vx-*)
+ basic_machine=f301-fujitsu
+ ;;
+ vxworks960)
+ basic_machine=i960-wrs
+ os=-vxworks
+ ;;
+ vxworks68)
+ basic_machine=m68k-wrs
+ os=-vxworks
+ ;;
+ vxworks29k)
+ basic_machine=a29k-wrs
+ os=-vxworks
+ ;;
+ w65*)
+ basic_machine=w65-wdc
+ os=-none
+ ;;
+ w89k-*)
+ basic_machine=hppa1.1-winbond
+ os=-proelf
+ ;;
+ xbox)
+ basic_machine=i686-pc
+ os=-mingw32
+ ;;
+ xps | xps100)
+ basic_machine=xps100-honeywell
+ ;;
+ ymp)
+ basic_machine=ymp-cray
+ os=-unicos
+ ;;
+ z8k-*-coff)
+ basic_machine=z8k-unknown
+ os=-sim
+ ;;
+ z80-*-coff)
+ basic_machine=z80-unknown
+ os=-sim
+ ;;
+ none)
+ basic_machine=none-none
+ os=-none
+ ;;
+
+# Here we handle the default manufacturer of certain CPU types. It is in
+# some cases the only manufacturer, in others, it is the most popular.
+ w89k)
+ basic_machine=hppa1.1-winbond
+ ;;
+ op50n)
+ basic_machine=hppa1.1-oki
+ ;;
+ op60c)
+ basic_machine=hppa1.1-oki
+ ;;
+ romp)
+ basic_machine=romp-ibm
+ ;;
+ mmix)
+ basic_machine=mmix-knuth
+ ;;
+ rs6000)
+ basic_machine=rs6000-ibm
+ ;;
+ vax)
+ basic_machine=vax-dec
+ ;;
+ pdp10)
+ # there are many clones, so DEC is not a safe bet
+ basic_machine=pdp10-unknown
+ ;;
+ pdp11)
+ basic_machine=pdp11-dec
+ ;;
+ we32k)
+ basic_machine=we32k-att
+ ;;
+ sh[1234] | sh[24]a | sh[24]aeb | sh[34]eb | sh[1234]le | sh[23]ele)
+ basic_machine=sh-unknown
+ ;;
+ sparc | sparcv8 | sparcv9 | sparcv9b | sparcv9v)
+ basic_machine=sparc-sun
+ ;;
+ cydra)
+ basic_machine=cydra-cydrome
+ ;;
+ orion)
+ basic_machine=orion-highlevel
+ ;;
+ orion105)
+ basic_machine=clipper-highlevel
+ ;;
+ mac | mpw | mac-mpw)
+ basic_machine=m68k-apple
+ ;;
+ pmac | pmac-mpw)
+ basic_machine=powerpc-apple
+ ;;
+ *-unknown)
+ # Make sure to match an already-canonicalized machine name.
+ ;;
+ *)
+ echo Invalid configuration \`$1\': machine \`$basic_machine\' not recognized 1>&2
+ exit 1
+ ;;
+esac
+
+# Here we canonicalize certain aliases for manufacturers.
+case $basic_machine in
+ *-digital*)
+ basic_machine=`echo $basic_machine | sed 's/digital.*/dec/'`
+ ;;
+ *-commodore*)
+ basic_machine=`echo $basic_machine | sed 's/commodore.*/cbm/'`
+ ;;
+ *)
+ ;;
+esac
+
+# Decode manufacturer-specific aliases for certain operating systems.
+
+if [ x"$os" != x"" ]
+then
+case $os in
+ # First match some system type aliases
+ # that might get confused with valid system types.
+ # -solaris* is a basic system type, with this one exception.
+ -solaris1 | -solaris1.*)
+ os=`echo $os | sed -e 's|solaris1|sunos4|'`
+ ;;
+ -solaris)
+ os=-solaris2
+ ;;
+ -svr4*)
+ os=-sysv4
+ ;;
+ -unixware*)
+ os=-sysv4.2uw
+ ;;
+ -gnu/linux*)
+ os=`echo $os | sed -e 's|gnu/linux|linux-gnu|'`
+ ;;
+ # First accept the basic system types.
+ # The portable systems comes first.
+ # Each alternative MUST END IN A *, to match a version number.
+ # -sysv* is not here because it comes later, after sysvr4.
+ -gnu* | -bsd* | -mach* | -minix* | -genix* | -ultrix* | -irix* \
+ | -*vms* | -sco* | -esix* | -isc* | -aix* | -sunos | -sunos[34]*\
+ | -hpux* | -unos* | -osf* | -luna* | -dgux* | -solaris* | -sym* \
+ | -kopensolaris* \
+ | -amigaos* | -amigados* | -msdos* | -newsos* | -unicos* | -aof* \
+ | -aos* | -aros* \
+ | -nindy* | -vxsim* | -vxworks* | -ebmon* | -hms* | -mvs* \
+ | -clix* | -riscos* | -uniplus* | -iris* | -rtu* | -xenix* \
+ | -hiux* | -386bsd* | -knetbsd* | -mirbsd* | -netbsd* \
+ | -openbsd* | -solidbsd* \
+ | -ekkobsd* | -kfreebsd* | -freebsd* | -riscix* | -lynxos* \
+ | -bosx* | -nextstep* | -cxux* | -aout* | -elf* | -oabi* \
+ | -ptx* | -coff* | -ecoff* | -winnt* | -domain* | -vsta* \
+ | -udi* | -eabi* | -lites* | -ieee* | -go32* | -aux* \
+ | -chorusos* | -chorusrdb* | -cegcc* \
+ | -cygwin* | -pe* | -psos* | -moss* | -proelf* | -rtems* \
+ | -mingw32* | -linux-gnu* | -linux-newlib* | -linux-uclibc* \
+ | -uxpv* | -beos* | -mpeix* | -udk* \
+ | -interix* | -uwin* | -mks* | -rhapsody* | -darwin* | -opened* \
+ | -openstep* | -oskit* | -conix* | -pw32* | -nonstopux* \
+ | -storm-chaos* | -tops10* | -tenex* | -tops20* | -its* \
+ | -os2* | -vos* | -palmos* | -uclinux* | -nucleus* \
+ | -morphos* | -superux* | -rtmk* | -rtmk-nova* | -windiss* \
+ | -powermax* | -dnix* | -nx6 | -nx7 | -sei* | -dragonfly* \
+ | -skyos* | -haiku* | -rdos* | -toppers* | -drops*)
+ # Remember, each alternative MUST END IN *, to match a version number.
+ ;;
+ -qnx*)
+ case $basic_machine in
+ x86-* | i*86-*)
+ ;;
+ *)
+ os=-nto$os
+ ;;
+ esac
+ ;;
+ -nto-qnx*)
+ ;;
+ -nto*)
+ os=`echo $os | sed -e 's|nto|nto-qnx|'`
+ ;;
+ -sim | -es1800* | -hms* | -xray | -os68k* | -none* | -v88r* \
+ | -windows* | -osx | -abug | -netware* | -os9* | -beos* | -haiku* \
+ | -macos* | -mpw* | -magic* | -mmixware* | -mon960* | -lnews*)
+ ;;
+ -mac*)
+ os=`echo $os | sed -e 's|mac|macos|'`
+ ;;
+ -linux-dietlibc)
+ os=-linux-dietlibc
+ ;;
+ -linux*)
+ os=`echo $os | sed -e 's|linux|linux-gnu|'`
+ ;;
+ -sunos5*)
+ os=`echo $os | sed -e 's|sunos5|solaris2|'`
+ ;;
+ -sunos6*)
+ os=`echo $os | sed -e 's|sunos6|solaris3|'`
+ ;;
+ -opened*)
+ os=-openedition
+ ;;
+ -os400*)
+ os=-os400
+ ;;
+ -wince*)
+ os=-wince
+ ;;
+ -osfrose*)
+ os=-osfrose
+ ;;
+ -osf*)
+ os=-osf
+ ;;
+ -utek*)
+ os=-bsd
+ ;;
+ -dynix*)
+ os=-bsd
+ ;;
+ -acis*)
+ os=-aos
+ ;;
+ -atheos*)
+ os=-atheos
+ ;;
+ -syllable*)
+ os=-syllable
+ ;;
+ -386bsd)
+ os=-bsd
+ ;;
+ -ctix* | -uts*)
+ os=-sysv
+ ;;
+ -nova*)
+ os=-rtmk-nova
+ ;;
+ -ns2 )
+ os=-nextstep2
+ ;;
+ -nsk*)
+ os=-nsk
+ ;;
+ # Preserve the version number of sinix5.
+ -sinix5.*)
+ os=`echo $os | sed -e 's|sinix|sysv|'`
+ ;;
+ -sinix*)
+ os=-sysv4
+ ;;
+ -tpf*)
+ os=-tpf
+ ;;
+ -triton*)
+ os=-sysv3
+ ;;
+ -oss*)
+ os=-sysv3
+ ;;
+ -svr4)
+ os=-sysv4
+ ;;
+ -svr3)
+ os=-sysv3
+ ;;
+ -sysvr4)
+ os=-sysv4
+ ;;
+ # This must come after -sysvr4.
+ -sysv*)
+ ;;
+ -ose*)
+ os=-ose
+ ;;
+ -es1800*)
+ os=-ose
+ ;;
+ -xenix)
+ os=-xenix
+ ;;
+ -*mint | -mint[0-9]* | -*MiNT | -MiNT[0-9]*)
+ os=-mint
+ ;;
+ -aros*)
+ os=-aros
+ ;;
+ -kaos*)
+ os=-kaos
+ ;;
+ -zvmoe)
+ os=-zvmoe
+ ;;
+ -dicos*)
+ os=-dicos
+ ;;
+ -none)
+ ;;
+ *)
+ # Get rid of the `-' at the beginning of $os.
+ os=`echo $os | sed 's/[^-]*-//'`
+ echo Invalid configuration \`$1\': system \`$os\' not recognized 1>&2
+ exit 1
+ ;;
+esac
+else
+
+# Here we handle the default operating systems that come with various machines.
+# The value should be what the vendor currently ships out the door with their
+# machine or put another way, the most popular os provided with the machine.
+
+# Note that if you're going to try to match "-MANUFACTURER" here (say,
+# "-sun"), then you have to tell the case statement up towards the top
+# that MANUFACTURER isn't an operating system. Otherwise, code above
+# will signal an error saying that MANUFACTURER isn't an operating
+# system, and we'll never get to this point.
+
+case $basic_machine in
+ score-*)
+ os=-elf
+ ;;
+ spu-*)
+ os=-elf
+ ;;
+ *-acorn)
+ os=-riscix1.2
+ ;;
+ arm*-rebel)
+ os=-linux
+ ;;
+ arm*-semi)
+ os=-aout
+ ;;
+ c4x-* | tic4x-*)
+ os=-coff
+ ;;
+ # This must come before the *-dec entry.
+ pdp10-*)
+ os=-tops20
+ ;;
+ pdp11-*)
+ os=-none
+ ;;
+ *-dec | vax-*)
+ os=-ultrix4.2
+ ;;
+ m68*-apollo)
+ os=-domain
+ ;;
+ i386-sun)
+ os=-sunos4.0.2
+ ;;
+ m68000-sun)
+ os=-sunos3
+ # This also exists in the configure program, but was not the
+ # default.
+ # os=-sunos4
+ ;;
+ m68*-cisco)
+ os=-aout
+ ;;
+ mep-*)
+ os=-elf
+ ;;
+ mips*-cisco)
+ os=-elf
+ ;;
+ mips*-*)
+ os=-elf
+ ;;
+ or32-*)
+ os=-coff
+ ;;
+ *-tti) # must be before sparc entry or we get the wrong os.
+ os=-sysv3
+ ;;
+ sparc-* | *-sun)
+ os=-sunos4.1.1
+ ;;
+ *-be)
+ os=-beos
+ ;;
+ *-haiku)
+ os=-haiku
+ ;;
+ *-ibm)
+ os=-aix
+ ;;
+ *-knuth)
+ os=-mmixware
+ ;;
+ *-wec)
+ os=-proelf
+ ;;
+ *-winbond)
+ os=-proelf
+ ;;
+ *-oki)
+ os=-proelf
+ ;;
+ *-hp)
+ os=-hpux
+ ;;
+ *-hitachi)
+ os=-hiux
+ ;;
+ i860-* | *-att | *-ncr | *-altos | *-motorola | *-convergent)
+ os=-sysv
+ ;;
+ *-cbm)
+ os=-amigaos
+ ;;
+ *-dg)
+ os=-dgux
+ ;;
+ *-dolphin)
+ os=-sysv3
+ ;;
+ m68k-ccur)
+ os=-rtu
+ ;;
+ m88k-omron*)
+ os=-luna
+ ;;
+ *-next )
+ os=-nextstep
+ ;;
+ *-sequent)
+ os=-ptx
+ ;;
+ *-crds)
+ os=-unos
+ ;;
+ *-ns)
+ os=-genix
+ ;;
+ i370-*)
+ os=-mvs
+ ;;
+ *-next)
+ os=-nextstep3
+ ;;
+ *-gould)
+ os=-sysv
+ ;;
+ *-highlevel)
+ os=-bsd
+ ;;
+ *-encore)
+ os=-bsd
+ ;;
+ *-sgi)
+ os=-irix
+ ;;
+ *-siemens)
+ os=-sysv4
+ ;;
+ *-masscomp)
+ os=-rtu
+ ;;
+ f30[01]-fujitsu | f700-fujitsu)
+ os=-uxpv
+ ;;
+ *-rom68k)
+ os=-coff
+ ;;
+ *-*bug)
+ os=-coff
+ ;;
+ *-apple)
+ os=-macos
+ ;;
+ *-atari*)
+ os=-mint
+ ;;
+ *)
+ os=-none
+ ;;
+esac
+fi
+
+# Here we handle the case where we know the os, and the CPU type, but not the
+# manufacturer. We pick the logical manufacturer.
+vendor=unknown
+case $basic_machine in
+ *-unknown)
+ case $os in
+ -riscix*)
+ vendor=acorn
+ ;;
+ -sunos*)
+ vendor=sun
+ ;;
+ -aix*)
+ vendor=ibm
+ ;;
+ -beos*)
+ vendor=be
+ ;;
+ -hpux*)
+ vendor=hp
+ ;;
+ -mpeix*)
+ vendor=hp
+ ;;
+ -hiux*)
+ vendor=hitachi
+ ;;
+ -unos*)
+ vendor=crds
+ ;;
+ -dgux*)
+ vendor=dg
+ ;;
+ -luna*)
+ vendor=omron
+ ;;
+ -genix*)
+ vendor=ns
+ ;;
+ -mvs* | -opened*)
+ vendor=ibm
+ ;;
+ -os400*)
+ vendor=ibm
+ ;;
+ -ptx*)
+ vendor=sequent
+ ;;
+ -tpf*)
+ vendor=ibm
+ ;;
+ -vxsim* | -vxworks* | -windiss*)
+ vendor=wrs
+ ;;
+ -aux*)
+ vendor=apple
+ ;;
+ -hms*)
+ vendor=hitachi
+ ;;
+ -mpw* | -macos*)
+ vendor=apple
+ ;;
+ -*mint | -mint[0-9]* | -*MiNT | -MiNT[0-9]*)
+ vendor=atari
+ ;;
+ -vos*)
+ vendor=stratus
+ ;;
+ esac
+ basic_machine=`echo $basic_machine | sed "s/unknown/$vendor/"`
+ ;;
+esac
+
+echo $basic_machine$os
+exit
+
+# Local variables:
+# eval: (add-hook 'write-file-hooks 'time-stamp)
+# time-stamp-start: "timestamp='"
+# time-stamp-format: "%:y-%02m-%02d"
+# time-stamp-end: "'"
+# End:
diff --git a/src/3rdparty/libpng/configure b/src/3rdparty/libpng/configure
new file mode 100755
index 0000000..347d34b
--- /dev/null
+++ b/src/3rdparty/libpng/configure
@@ -0,0 +1,13839 @@
+#! /bin/sh
+# Guess values for system-dependent variables and create Makefiles.
+# Generated by GNU Autoconf 2.65 for libpng 1.4.0.
+#
+# Report bugs to <png-mng-implement@lists.sourceforge.net>.
+#
+#
+# Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
+# 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation,
+# Inc.
+#
+#
+# This configure script is free software; the Free Software Foundation
+# gives unlimited permission to copy, distribute and modify it.
+## -------------------- ##
+## M4sh Initialization. ##
+## -------------------- ##
+
+# Be more Bourne compatible
+DUALCASE=1; export DUALCASE # for MKS sh
+if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then :
+ emulate sh
+ NULLCMD=:
+ # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which
+ # is contrary to our usage. Disable this feature.
+ alias -g '${1+"$@"}'='"$@"'
+ setopt NO_GLOB_SUBST
+else
+ case `(set -o) 2>/dev/null` in #(
+ *posix*) :
+ set -o posix ;; #(
+ *) :
+ ;;
+esac
+fi
+
+
+as_nl='
+'
+export as_nl
+# Printing a long string crashes Solaris 7 /usr/bin/printf.
+as_echo='\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'
+as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo
+as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo$as_echo
+# Prefer a ksh shell builtin over an external printf program on Solaris,
+# but without wasting forks for bash or zsh.
+if test -z "$BASH_VERSION$ZSH_VERSION" \
+ && (test "X`print -r -- $as_echo`" = "X$as_echo") 2>/dev/null; then
+ as_echo='print -r --'
+ as_echo_n='print -rn --'
+elif (test "X`printf %s $as_echo`" = "X$as_echo") 2>/dev/null; then
+ as_echo='printf %s\n'
+ as_echo_n='printf %s'
+else
+ if test "X`(/usr/ucb/echo -n -n $as_echo) 2>/dev/null`" = "X-n $as_echo"; then
+ as_echo_body='eval /usr/ucb/echo -n "$1$as_nl"'
+ as_echo_n='/usr/ucb/echo -n'
+ else
+ as_echo_body='eval expr "X$1" : "X\\(.*\\)"'
+ as_echo_n_body='eval
+ arg=$1;
+ case $arg in #(
+ *"$as_nl"*)
+ expr "X$arg" : "X\\(.*\\)$as_nl";
+ arg=`expr "X$arg" : ".*$as_nl\\(.*\\)"`;;
+ esac;
+ expr "X$arg" : "X\\(.*\\)" | tr -d "$as_nl"
+ '
+ export as_echo_n_body
+ as_echo_n='sh -c $as_echo_n_body as_echo'
+ fi
+ export as_echo_body
+ as_echo='sh -c $as_echo_body as_echo'
+fi
+
+# The user is always right.
+if test "${PATH_SEPARATOR+set}" != set; then
+ PATH_SEPARATOR=:
+ (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 && {
+ (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 ||
+ PATH_SEPARATOR=';'
+ }
+fi
+
+
+# IFS
+# We need space, tab and new line, in precisely that order. Quoting is
+# there to prevent editors from complaining about space-tab.
+# (If _AS_PATH_WALK were called with IFS unset, it would disable word
+# splitting by setting IFS to empty value.)
+IFS=" "" $as_nl"
+
+# Find who we are. Look in the path if we contain no directory separator.
+case $0 in #((
+ *[\\/]* ) as_myself=$0 ;;
+ *) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ test -r "$as_dir/$0" && as_myself=$as_dir/$0 && break
+ done
+IFS=$as_save_IFS
+
+ ;;
+esac
+# We did not find ourselves, most probably we were run as `sh COMMAND'
+# in which case we are not to be found in the path.
+if test "x$as_myself" = x; then
+ as_myself=$0
+fi
+if test ! -f "$as_myself"; then
+ $as_echo "$as_myself: error: cannot find myself; rerun with an absolute file name" >&2
+ exit 1
+fi
+
+# Unset variables that we do not need and which cause bugs (e.g. in
+# pre-3.0 UWIN ksh). But do not cause bugs in bash 2.01; the "|| exit 1"
+# suppresses any "Segmentation fault" message there. '((' could
+# trigger a bug in pdksh 5.2.14.
+for as_var in BASH_ENV ENV MAIL MAILPATH
+do eval test x\${$as_var+set} = xset \
+ && ( (unset $as_var) || exit 1) >/dev/null 2>&1 && unset $as_var || :
+done
+PS1='$ '
+PS2='> '
+PS4='+ '
+
+# NLS nuisances.
+LC_ALL=C
+export LC_ALL
+LANGUAGE=C
+export LANGUAGE
+
+# CDPATH.
+(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
+
+if test "x$CONFIG_SHELL" = x; then
+ as_bourne_compatible="if test -n \"\${ZSH_VERSION+set}\" && (emulate sh) >/dev/null 2>&1; then :
+ emulate sh
+ NULLCMD=:
+ # Pre-4.2 versions of Zsh do word splitting on \${1+\"\$@\"}, which
+ # is contrary to our usage. Disable this feature.
+ alias -g '\${1+\"\$@\"}'='\"\$@\"'
+ setopt NO_GLOB_SUBST
+else
+ case \`(set -o) 2>/dev/null\` in #(
+ *posix*) :
+ set -o posix ;; #(
+ *) :
+ ;;
+esac
+fi
+"
+ as_required="as_fn_return () { (exit \$1); }
+as_fn_success () { as_fn_return 0; }
+as_fn_failure () { as_fn_return 1; }
+as_fn_ret_success () { return 0; }
+as_fn_ret_failure () { return 1; }
+
+exitcode=0
+as_fn_success || { exitcode=1; echo as_fn_success failed.; }
+as_fn_failure && { exitcode=1; echo as_fn_failure succeeded.; }
+as_fn_ret_success || { exitcode=1; echo as_fn_ret_success failed.; }
+as_fn_ret_failure && { exitcode=1; echo as_fn_ret_failure succeeded.; }
+if ( set x; as_fn_ret_success y && test x = \"\$1\" ); then :
+
+else
+ exitcode=1; echo positional parameters were not saved.
+fi
+test x\$exitcode = x0 || exit 1"
+ as_suggested=" as_lineno_1=";as_suggested=$as_suggested$LINENO;as_suggested=$as_suggested" as_lineno_1a=\$LINENO
+ as_lineno_2=";as_suggested=$as_suggested$LINENO;as_suggested=$as_suggested" as_lineno_2a=\$LINENO
+ eval 'test \"x\$as_lineno_1'\$as_run'\" != \"x\$as_lineno_2'\$as_run'\" &&
+ test \"x\`expr \$as_lineno_1'\$as_run' + 1\`\" = \"x\$as_lineno_2'\$as_run'\"' || exit 1
+test \$(( 1 + 1 )) = 2 || exit 1"
+ if (eval "$as_required") 2>/dev/null; then :
+ as_have_required=yes
+else
+ as_have_required=no
+fi
+ if test x$as_have_required = xyes && (eval "$as_suggested") 2>/dev/null; then :
+
+else
+ as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+as_found=false
+for as_dir in /bin$PATH_SEPARATOR/usr/bin$PATH_SEPARATOR$PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ as_found=:
+ case $as_dir in #(
+ /*)
+ for as_base in sh bash ksh sh5; do
+ # Try only shells that exist, to save several forks.
+ as_shell=$as_dir/$as_base
+ if { test -f "$as_shell" || test -f "$as_shell.exe"; } &&
+ { $as_echo "$as_bourne_compatible""$as_required" | as_run=a "$as_shell"; } 2>/dev/null; then :
+ CONFIG_SHELL=$as_shell as_have_required=yes
+ if { $as_echo "$as_bourne_compatible""$as_suggested" | as_run=a "$as_shell"; } 2>/dev/null; then :
+ break 2
+fi
+fi
+ done;;
+ esac
+ as_found=false
+done
+$as_found || { if { test -f "$SHELL" || test -f "$SHELL.exe"; } &&
+ { $as_echo "$as_bourne_compatible""$as_required" | as_run=a "$SHELL"; } 2>/dev/null; then :
+ CONFIG_SHELL=$SHELL as_have_required=yes
+fi; }
+IFS=$as_save_IFS
+
+
+ if test "x$CONFIG_SHELL" != x; then :
+ # We cannot yet assume a decent shell, so we have to provide a
+ # neutralization value for shells without unset; and this also
+ # works around shells that cannot unset nonexistent variables.
+ BASH_ENV=/dev/null
+ ENV=/dev/null
+ (unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV
+ export CONFIG_SHELL
+ exec "$CONFIG_SHELL" "$as_myself" ${1+"$@"}
+fi
+
+ if test x$as_have_required = xno; then :
+ $as_echo "$0: This script requires a shell more modern than all"
+ $as_echo "$0: the shells that I found on your system."
+ if test x${ZSH_VERSION+set} = xset ; then
+ $as_echo "$0: In particular, zsh $ZSH_VERSION has bugs and should"
+ $as_echo "$0: be upgraded to zsh 4.3.4 or later."
+ else
+ $as_echo "$0: Please tell bug-autoconf@gnu.org and
+$0: png-mng-implement@lists.sourceforge.net about your
+$0: system, including any error possibly output before this
+$0: message. Then install a modern shell, or manually run
+$0: the script under such a shell if you do have one."
+ fi
+ exit 1
+fi
+fi
+fi
+SHELL=${CONFIG_SHELL-/bin/sh}
+export SHELL
+# Unset more variables known to interfere with behavior of common tools.
+CLICOLOR_FORCE= GREP_OPTIONS=
+unset CLICOLOR_FORCE GREP_OPTIONS
+
+## --------------------- ##
+## M4sh Shell Functions. ##
+## --------------------- ##
+# as_fn_unset VAR
+# ---------------
+# Portably unset VAR.
+as_fn_unset ()
+{
+ { eval $1=; unset $1;}
+}
+as_unset=as_fn_unset
+
+# as_fn_set_status STATUS
+# -----------------------
+# Set $? to STATUS, without forking.
+as_fn_set_status ()
+{
+ return $1
+} # as_fn_set_status
+
+# as_fn_exit STATUS
+# -----------------
+# Exit the shell with STATUS, even in a "trap 0" or "set -e" context.
+as_fn_exit ()
+{
+ set +e
+ as_fn_set_status $1
+ exit $1
+} # as_fn_exit
+
+# as_fn_mkdir_p
+# -------------
+# Create "$as_dir" as a directory, including parents if necessary.
+as_fn_mkdir_p ()
+{
+
+ case $as_dir in #(
+ -*) as_dir=./$as_dir;;
+ esac
+ test -d "$as_dir" || eval $as_mkdir_p || {
+ as_dirs=
+ while :; do
+ case $as_dir in #(
+ *\'*) as_qdir=`$as_echo "$as_dir" | sed "s/'/'\\\\\\\\''/g"`;; #'(
+ *) as_qdir=$as_dir;;
+ esac
+ as_dirs="'$as_qdir' $as_dirs"
+ as_dir=`$as_dirname -- "$as_dir" ||
+$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+ X"$as_dir" : 'X\(//\)[^/]' \| \
+ X"$as_dir" : 'X\(//\)$' \| \
+ X"$as_dir" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X"$as_dir" |
+ sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+ s//\1/
+ q
+ }
+ /^X\(\/\/\)[^/].*/{
+ s//\1/
+ q
+ }
+ /^X\(\/\/\)$/{
+ s//\1/
+ q
+ }
+ /^X\(\/\).*/{
+ s//\1/
+ q
+ }
+ s/.*/./; q'`
+ test -d "$as_dir" && break
+ done
+ test -z "$as_dirs" || eval "mkdir $as_dirs"
+ } || test -d "$as_dir" || as_fn_error "cannot create directory $as_dir"
+
+
+} # as_fn_mkdir_p
+# as_fn_append VAR VALUE
+# ----------------------
+# Append the text in VALUE to the end of the definition contained in VAR. Take
+# advantage of any shell optimizations that allow amortized linear growth over
+# repeated appends, instead of the typical quadratic growth present in naive
+# implementations.
+if (eval "as_var=1; as_var+=2; test x\$as_var = x12") 2>/dev/null; then :
+ eval 'as_fn_append ()
+ {
+ eval $1+=\$2
+ }'
+else
+ as_fn_append ()
+ {
+ eval $1=\$$1\$2
+ }
+fi # as_fn_append
+
+# as_fn_arith ARG...
+# ------------------
+# Perform arithmetic evaluation on the ARGs, and store the result in the
+# global $as_val. Take advantage of shells that can avoid forks. The arguments
+# must be portable across $(()) and expr.
+if (eval "test \$(( 1 + 1 )) = 2") 2>/dev/null; then :
+ eval 'as_fn_arith ()
+ {
+ as_val=$(( $* ))
+ }'
+else
+ as_fn_arith ()
+ {
+ as_val=`expr "$@" || test $? -eq 1`
+ }
+fi # as_fn_arith
+
+
+# as_fn_error ERROR [LINENO LOG_FD]
+# ---------------------------------
+# Output "`basename $0`: error: ERROR" to stderr. If LINENO and LOG_FD are
+# provided, also output the error to LOG_FD, referencing LINENO. Then exit the
+# script with status $?, using 1 if that was 0.
+as_fn_error ()
+{
+ as_status=$?; test $as_status -eq 0 && as_status=1
+ if test "$3"; then
+ as_lineno=${as_lineno-"$2"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+ $as_echo "$as_me:${as_lineno-$LINENO}: error: $1" >&$3
+ fi
+ $as_echo "$as_me: error: $1" >&2
+ as_fn_exit $as_status
+} # as_fn_error
+
+if expr a : '\(a\)' >/dev/null 2>&1 &&
+ test "X`expr 00001 : '.*\(...\)'`" = X001; then
+ as_expr=expr
+else
+ as_expr=false
+fi
+
+if (basename -- /) >/dev/null 2>&1 && test "X`basename -- / 2>&1`" = "X/"; then
+ as_basename=basename
+else
+ as_basename=false
+fi
+
+if (as_dir=`dirname -- /` && test "X$as_dir" = X/) >/dev/null 2>&1; then
+ as_dirname=dirname
+else
+ as_dirname=false
+fi
+
+as_me=`$as_basename -- "$0" ||
+$as_expr X/"$0" : '.*/\([^/][^/]*\)/*$' \| \
+ X"$0" : 'X\(//\)$' \| \
+ X"$0" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X/"$0" |
+ sed '/^.*\/\([^/][^/]*\)\/*$/{
+ s//\1/
+ q
+ }
+ /^X\/\(\/\/\)$/{
+ s//\1/
+ q
+ }
+ /^X\/\(\/\).*/{
+ s//\1/
+ q
+ }
+ s/.*/./; q'`
+
+# Avoid depending upon Character Ranges.
+as_cr_letters='abcdefghijklmnopqrstuvwxyz'
+as_cr_LETTERS='ABCDEFGHIJKLMNOPQRSTUVWXYZ'
+as_cr_Letters=$as_cr_letters$as_cr_LETTERS
+as_cr_digits='0123456789'
+as_cr_alnum=$as_cr_Letters$as_cr_digits
+
+
+ as_lineno_1=$LINENO as_lineno_1a=$LINENO
+ as_lineno_2=$LINENO as_lineno_2a=$LINENO
+ eval 'test "x$as_lineno_1'$as_run'" != "x$as_lineno_2'$as_run'" &&
+ test "x`expr $as_lineno_1'$as_run' + 1`" = "x$as_lineno_2'$as_run'"' || {
+ # Blame Lee E. McMahon (1931-1989) for sed's syntax. :-)
+ sed -n '
+ p
+ /[$]LINENO/=
+ ' <$as_myself |
+ sed '
+ s/[$]LINENO.*/&-/
+ t lineno
+ b
+ :lineno
+ N
+ :loop
+ s/[$]LINENO\([^'$as_cr_alnum'_].*\n\)\(.*\)/\2\1\2/
+ t loop
+ s/-\n.*//
+ ' >$as_me.lineno &&
+ chmod +x "$as_me.lineno" ||
+ { $as_echo "$as_me: error: cannot create $as_me.lineno; rerun with a POSIX shell" >&2; as_fn_exit 1; }
+
+ # Don't try to exec as it changes $[0], causing all sort of problems
+ # (the dirname of $[0] is not the place where we might find the
+ # original and so on. Autoconf is especially sensitive to this).
+ . "./$as_me.lineno"
+ # Exit status is that of the last command.
+ exit
+}
+
+ECHO_C= ECHO_N= ECHO_T=
+case `echo -n x` in #(((((
+-n*)
+ case `echo 'xy\c'` in
+ *c*) ECHO_T=' ';; # ECHO_T is single tab character.
+ xy) ECHO_C='\c';;
+ *) echo `echo ksh88 bug on AIX 6.1` > /dev/null
+ ECHO_T=' ';;
+ esac;;
+*)
+ ECHO_N='-n';;
+esac
+
+rm -f conf$$ conf$$.exe conf$$.file
+if test -d conf$$.dir; then
+ rm -f conf$$.dir/conf$$.file
+else
+ rm -f conf$$.dir
+ mkdir conf$$.dir 2>/dev/null
+fi
+if (echo >conf$$.file) 2>/dev/null; then
+ if ln -s conf$$.file conf$$ 2>/dev/null; then
+ as_ln_s='ln -s'
+ # ... but there are two gotchas:
+ # 1) On MSYS, both `ln -s file dir' and `ln file dir' fail.
+ # 2) DJGPP < 2.04 has no symlinks; `ln -s' creates a wrapper executable.
+ # In both cases, we have to default to `cp -p'.
+ ln -s conf$$.file conf$$.dir 2>/dev/null && test ! -f conf$$.exe ||
+ as_ln_s='cp -p'
+ elif ln conf$$.file conf$$ 2>/dev/null; then
+ as_ln_s=ln
+ else
+ as_ln_s='cp -p'
+ fi
+else
+ as_ln_s='cp -p'
+fi
+rm -f conf$$ conf$$.exe conf$$.dir/conf$$.file conf$$.file
+rmdir conf$$.dir 2>/dev/null
+
+if mkdir -p . 2>/dev/null; then
+ as_mkdir_p='mkdir -p "$as_dir"'
+else
+ test -d ./-p && rmdir ./-p
+ as_mkdir_p=false
+fi
+
+if test -x / >/dev/null 2>&1; then
+ as_test_x='test -x'
+else
+ if ls -dL / >/dev/null 2>&1; then
+ as_ls_L_option=L
+ else
+ as_ls_L_option=
+ fi
+ as_test_x='
+ eval sh -c '\''
+ if test -d "$1"; then
+ test -d "$1/.";
+ else
+ case $1 in #(
+ -*)set "./$1";;
+ esac;
+ case `ls -ld'$as_ls_L_option' "$1" 2>/dev/null` in #((
+ ???[sx]*):;;*)false;;esac;fi
+ '\'' sh
+ '
+fi
+as_executable_p=$as_test_x
+
+# Sed expression to map a string onto a valid CPP name.
+as_tr_cpp="eval sed 'y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g'"
+
+# Sed expression to map a string onto a valid variable name.
+as_tr_sh="eval sed 'y%*+%pp%;s%[^_$as_cr_alnum]%_%g'"
+
+
+
+# Check that we are running under the correct shell.
+SHELL=${CONFIG_SHELL-/bin/sh}
+
+case X$lt_ECHO in
+X*--fallback-echo)
+ # Remove one level of quotation (which was required for Make).
+ ECHO=`echo "$lt_ECHO" | sed 's,\\\\\$\\$0,'$0','`
+ ;;
+esac
+
+ECHO=${lt_ECHO-echo}
+if test "X$1" = X--no-reexec; then
+ # Discard the --no-reexec flag, and continue.
+ shift
+elif test "X$1" = X--fallback-echo; then
+ # Avoid inline document here, it may be left over
+ :
+elif test "X`{ $ECHO '\t'; } 2>/dev/null`" = 'X\t' ; then
+ # Yippee, $ECHO works!
+ :
+else
+ # Restart under the correct shell.
+ exec $SHELL "$0" --no-reexec ${1+"$@"}
+fi
+
+if test "X$1" = X--fallback-echo; then
+ # used as fallback echo
+ shift
+ cat <<_LT_EOF
+$*
+_LT_EOF
+ exit 0
+fi
+
+# The HP-UX ksh and POSIX shell print the target directory to stdout
+# if CDPATH is set.
+(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
+
+if test -z "$lt_ECHO"; then
+ if test "X${echo_test_string+set}" != Xset; then
+ # find a string as large as possible, as long as the shell can cope with it
+ for cmd in 'sed 50q "$0"' 'sed 20q "$0"' 'sed 10q "$0"' 'sed 2q "$0"' 'echo test'; do
+ # expected sizes: less than 2Kb, 1Kb, 512 bytes, 16 bytes, ...
+ if { echo_test_string=`eval $cmd`; } 2>/dev/null &&
+ { test "X$echo_test_string" = "X$echo_test_string"; } 2>/dev/null
+ then
+ break
+ fi
+ done
+ fi
+
+ if test "X`{ $ECHO '\t'; } 2>/dev/null`" = 'X\t' &&
+ echo_testing_string=`{ $ECHO "$echo_test_string"; } 2>/dev/null` &&
+ test "X$echo_testing_string" = "X$echo_test_string"; then
+ :
+ else
+ # The Solaris, AIX, and Digital Unix default echo programs unquote
+ # backslashes. This makes it impossible to quote backslashes using
+ # echo "$something" | sed 's/\\/\\\\/g'
+ #
+ # So, first we look for a working echo in the user's PATH.
+
+ lt_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
+ for dir in $PATH /usr/ucb; do
+ IFS="$lt_save_ifs"
+ if (test -f $dir/echo || test -f $dir/echo$ac_exeext) &&
+ test "X`($dir/echo '\t') 2>/dev/null`" = 'X\t' &&
+ echo_testing_string=`($dir/echo "$echo_test_string") 2>/dev/null` &&
+ test "X$echo_testing_string" = "X$echo_test_string"; then
+ ECHO="$dir/echo"
+ break
+ fi
+ done
+ IFS="$lt_save_ifs"
+
+ if test "X$ECHO" = Xecho; then
+ # We didn't find a better echo, so look for alternatives.
+ if test "X`{ print -r '\t'; } 2>/dev/null`" = 'X\t' &&
+ echo_testing_string=`{ print -r "$echo_test_string"; } 2>/dev/null` &&
+ test "X$echo_testing_string" = "X$echo_test_string"; then
+ # This shell has a builtin print -r that does the trick.
+ ECHO='print -r'
+ elif { test -f /bin/ksh || test -f /bin/ksh$ac_exeext; } &&
+ test "X$CONFIG_SHELL" != X/bin/ksh; then
+ # If we have ksh, try running configure again with it.
+ ORIGINAL_CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
+ export ORIGINAL_CONFIG_SHELL
+ CONFIG_SHELL=/bin/ksh
+ export CONFIG_SHELL
+ exec $CONFIG_SHELL "$0" --no-reexec ${1+"$@"}
+ else
+ # Try using printf.
+ ECHO='printf %s\n'
+ if test "X`{ $ECHO '\t'; } 2>/dev/null`" = 'X\t' &&
+ echo_testing_string=`{ $ECHO "$echo_test_string"; } 2>/dev/null` &&
+ test "X$echo_testing_string" = "X$echo_test_string"; then
+ # Cool, printf works
+ :
+ elif echo_testing_string=`($ORIGINAL_CONFIG_SHELL "$0" --fallback-echo '\t') 2>/dev/null` &&
+ test "X$echo_testing_string" = 'X\t' &&
+ echo_testing_string=`($ORIGINAL_CONFIG_SHELL "$0" --fallback-echo "$echo_test_string") 2>/dev/null` &&
+ test "X$echo_testing_string" = "X$echo_test_string"; then
+ CONFIG_SHELL=$ORIGINAL_CONFIG_SHELL
+ export CONFIG_SHELL
+ SHELL="$CONFIG_SHELL"
+ export SHELL
+ ECHO="$CONFIG_SHELL $0 --fallback-echo"
+ elif echo_testing_string=`($CONFIG_SHELL "$0" --fallback-echo '\t') 2>/dev/null` &&
+ test "X$echo_testing_string" = 'X\t' &&
+ echo_testing_string=`($CONFIG_SHELL "$0" --fallback-echo "$echo_test_string") 2>/dev/null` &&
+ test "X$echo_testing_string" = "X$echo_test_string"; then
+ ECHO="$CONFIG_SHELL $0 --fallback-echo"
+ else
+ # maybe with a smaller string...
+ prev=:
+
+ for cmd in 'echo test' 'sed 2q "$0"' 'sed 10q "$0"' 'sed 20q "$0"' 'sed 50q "$0"'; do
+ if { test "X$echo_test_string" = "X`eval $cmd`"; } 2>/dev/null
+ then
+ break
+ fi
+ prev="$cmd"
+ done
+
+ if test "$prev" != 'sed 50q "$0"'; then
+ echo_test_string=`eval $prev`
+ export echo_test_string
+ exec ${ORIGINAL_CONFIG_SHELL-${CONFIG_SHELL-/bin/sh}} "$0" ${1+"$@"}
+ else
+ # Oops. We lost completely, so just stick with echo.
+ ECHO=echo
+ fi
+ fi
+ fi
+ fi
+ fi
+fi
+
+# Copy echo and quote the copy suitably for passing to libtool from
+# the Makefile, instead of quoting the original, which is used later.
+lt_ECHO=$ECHO
+if test "X$lt_ECHO" = "X$CONFIG_SHELL $0 --fallback-echo"; then
+ lt_ECHO="$CONFIG_SHELL \\\$\$0 --fallback-echo"
+fi
+
+
+
+
+test -n "$DJDIR" || exec 7<&0 </dev/null
+exec 6>&1
+
+# Name of the host.
+# hostname on some systems (SVR3.2, Linux) returns a bogus exit status,
+# so uname gets run too.
+ac_hostname=`(hostname || uname -n) 2>/dev/null | sed 1q`
+
+#
+# Initializations.
+#
+ac_default_prefix=/usr/local
+ac_clean_files=
+ac_config_libobj_dir=.
+LIBOBJS=
+cross_compiling=no
+subdirs=
+MFLAGS=
+MAKEFLAGS=
+
+# Identity of this package.
+PACKAGE_NAME='libpng'
+PACKAGE_TARNAME='libpng'
+PACKAGE_VERSION='1.4.0'
+PACKAGE_STRING='libpng 1.4.0'
+PACKAGE_BUGREPORT='png-mng-implement@lists.sourceforge.net'
+PACKAGE_URL=''
+
+ac_unique_file="pngget.c"
+# Factoring default headers for most tests.
+ac_includes_default="\
+#include <stdio.h>
+#ifdef HAVE_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+#ifdef HAVE_SYS_STAT_H
+# include <sys/stat.h>
+#endif
+#ifdef STDC_HEADERS
+# include <stdlib.h>
+# include <stddef.h>
+#else
+# ifdef HAVE_STDLIB_H
+# include <stdlib.h>
+# endif
+#endif
+#ifdef HAVE_STRING_H
+# if !defined STDC_HEADERS && defined HAVE_MEMORY_H
+# include <memory.h>
+# endif
+# include <string.h>
+#endif
+#ifdef HAVE_STRINGS_H
+# include <strings.h>
+#endif
+#ifdef HAVE_INTTYPES_H
+# include <inttypes.h>
+#endif
+#ifdef HAVE_STDINT_H
+# include <stdint.h>
+#endif
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#endif"
+
+ac_subst_vars='am__EXEEXT_FALSE
+am__EXEEXT_TRUE
+LTLIBOBJS
+binconfigs
+pkgconfigdir
+PNGLIB_RELEASE
+PNGLIB_MINOR
+PNGLIB_MAJOR
+PNGLIB_VERSION
+SYMBOL_PREFIX
+HAVE_LD_VERSION_SCRIPT_FALSE
+HAVE_LD_VERSION_SCRIPT_TRUE
+LIBPNG_DEFINES
+LIBOBJS
+POW_LIB
+OTOOL64
+OTOOL
+LIPO
+NMEDIT
+DSYMUTIL
+lt_ECHO
+RANLIB
+AR
+NM
+ac_ct_DUMPBIN
+DUMPBIN
+LIBTOOL
+LN_S
+OBJDUMP
+DLLTOOL
+AS
+CPP
+LD
+FGREP
+EGREP
+GREP
+SED
+host_os
+host_vendor
+host_cpu
+host
+build_os
+build_vendor
+build_cpu
+build
+am__fastdepCC_FALSE
+am__fastdepCC_TRUE
+CCDEPMODE
+AMDEPBACKSLASH
+AMDEP_FALSE
+AMDEP_TRUE
+am__quote
+am__include
+DEPDIR
+OBJEXT
+EXEEXT
+ac_ct_CC
+CPPFLAGS
+LDFLAGS
+CFLAGS
+CC
+MAINT
+MAINTAINER_MODE_FALSE
+MAINTAINER_MODE_TRUE
+am__untar
+am__tar
+AMTAR
+am__leading_dot
+SET_MAKE
+AWK
+mkdir_p
+MKDIR_P
+INSTALL_STRIP_PROGRAM
+STRIP
+install_sh
+MAKEINFO
+AUTOHEADER
+AUTOMAKE
+AUTOCONF
+ACLOCAL
+VERSION
+PACKAGE
+CYGPATH_W
+am__isrc
+INSTALL_DATA
+INSTALL_SCRIPT
+INSTALL_PROGRAM
+target_alias
+host_alias
+build_alias
+LIBS
+ECHO_T
+ECHO_N
+ECHO_C
+DEFS
+mandir
+localedir
+libdir
+psdir
+pdfdir
+dvidir
+htmldir
+infodir
+docdir
+oldincludedir
+includedir
+localstatedir
+sharedstatedir
+sysconfdir
+datadir
+datarootdir
+libexecdir
+sbindir
+bindir
+program_transform_name
+prefix
+exec_prefix
+PACKAGE_URL
+PACKAGE_BUGREPORT
+PACKAGE_STRING
+PACKAGE_VERSION
+PACKAGE_TARNAME
+PACKAGE_NAME
+PATH_SEPARATOR
+SHELL'
+ac_subst_files=''
+ac_user_opts='
+enable_option_checking
+enable_maintainer_mode
+enable_dependency_tracking
+with_gnu_ld
+enable_shared
+enable_static
+with_pic
+enable_fast_install
+enable_libtool_lock
+with_pkgconfigdir
+with_binconfigs
+'
+ ac_precious_vars='build_alias
+host_alias
+target_alias
+CC
+CFLAGS
+LDFLAGS
+LIBS
+CPPFLAGS
+CPP'
+
+
+# Initialize some variables set by options.
+ac_init_help=
+ac_init_version=false
+ac_unrecognized_opts=
+ac_unrecognized_sep=
+# The variables have the same names as the options, with
+# dashes changed to underlines.
+cache_file=/dev/null
+exec_prefix=NONE
+no_create=
+no_recursion=
+prefix=NONE
+program_prefix=NONE
+program_suffix=NONE
+program_transform_name=s,x,x,
+silent=
+site=
+srcdir=
+verbose=
+x_includes=NONE
+x_libraries=NONE
+
+# Installation directory options.
+# These are left unexpanded so users can "make install exec_prefix=/foo"
+# and all the variables that are supposed to be based on exec_prefix
+# by default will actually change.
+# Use braces instead of parens because sh, perl, etc. also accept them.
+# (The list follows the same order as the GNU Coding Standards.)
+bindir='${exec_prefix}/bin'
+sbindir='${exec_prefix}/sbin'
+libexecdir='${exec_prefix}/libexec'
+datarootdir='${prefix}/share'
+datadir='${datarootdir}'
+sysconfdir='${prefix}/etc'
+sharedstatedir='${prefix}/com'
+localstatedir='${prefix}/var'
+includedir='${prefix}/include'
+oldincludedir='/usr/include'
+docdir='${datarootdir}/doc/${PACKAGE_TARNAME}'
+infodir='${datarootdir}/info'
+htmldir='${docdir}'
+dvidir='${docdir}'
+pdfdir='${docdir}'
+psdir='${docdir}'
+libdir='${exec_prefix}/lib'
+localedir='${datarootdir}/locale'
+mandir='${datarootdir}/man'
+
+ac_prev=
+ac_dashdash=
+for ac_option
+do
+ # If the previous option needs an argument, assign it.
+ if test -n "$ac_prev"; then
+ eval $ac_prev=\$ac_option
+ ac_prev=
+ continue
+ fi
+
+ case $ac_option in
+ *=*) ac_optarg=`expr "X$ac_option" : '[^=]*=\(.*\)'` ;;
+ *) ac_optarg=yes ;;
+ esac
+
+ # Accept the important Cygnus configure options, so we can diagnose typos.
+
+ case $ac_dashdash$ac_option in
+ --)
+ ac_dashdash=yes ;;
+
+ -bindir | --bindir | --bindi | --bind | --bin | --bi)
+ ac_prev=bindir ;;
+ -bindir=* | --bindir=* | --bindi=* | --bind=* | --bin=* | --bi=*)
+ bindir=$ac_optarg ;;
+
+ -build | --build | --buil | --bui | --bu)
+ ac_prev=build_alias ;;
+ -build=* | --build=* | --buil=* | --bui=* | --bu=*)
+ build_alias=$ac_optarg ;;
+
+ -cache-file | --cache-file | --cache-fil | --cache-fi \
+ | --cache-f | --cache- | --cache | --cach | --cac | --ca | --c)
+ ac_prev=cache_file ;;
+ -cache-file=* | --cache-file=* | --cache-fil=* | --cache-fi=* \
+ | --cache-f=* | --cache-=* | --cache=* | --cach=* | --cac=* | --ca=* | --c=*)
+ cache_file=$ac_optarg ;;
+
+ --config-cache | -C)
+ cache_file=config.cache ;;
+
+ -datadir | --datadir | --datadi | --datad)
+ ac_prev=datadir ;;
+ -datadir=* | --datadir=* | --datadi=* | --datad=*)
+ datadir=$ac_optarg ;;
+
+ -datarootdir | --datarootdir | --datarootdi | --datarootd | --dataroot \
+ | --dataroo | --dataro | --datar)
+ ac_prev=datarootdir ;;
+ -datarootdir=* | --datarootdir=* | --datarootdi=* | --datarootd=* \
+ | --dataroot=* | --dataroo=* | --dataro=* | --datar=*)
+ datarootdir=$ac_optarg ;;
+
+ -disable-* | --disable-*)
+ ac_useropt=`expr "x$ac_option" : 'x-*disable-\(.*\)'`
+ # Reject names that are not valid shell variable names.
+ expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
+ as_fn_error "invalid feature name: $ac_useropt"
+ ac_useropt_orig=$ac_useropt
+ ac_useropt=`$as_echo "$ac_useropt" | sed 's/[-+.]/_/g'`
+ case $ac_user_opts in
+ *"
+"enable_$ac_useropt"
+"*) ;;
+ *) ac_unrecognized_opts="$ac_unrecognized_opts$ac_unrecognized_sep--disable-$ac_useropt_orig"
+ ac_unrecognized_sep=', ';;
+ esac
+ eval enable_$ac_useropt=no ;;
+
+ -docdir | --docdir | --docdi | --doc | --do)
+ ac_prev=docdir ;;
+ -docdir=* | --docdir=* | --docdi=* | --doc=* | --do=*)
+ docdir=$ac_optarg ;;
+
+ -dvidir | --dvidir | --dvidi | --dvid | --dvi | --dv)
+ ac_prev=dvidir ;;
+ -dvidir=* | --dvidir=* | --dvidi=* | --dvid=* | --dvi=* | --dv=*)
+ dvidir=$ac_optarg ;;
+
+ -enable-* | --enable-*)
+ ac_useropt=`expr "x$ac_option" : 'x-*enable-\([^=]*\)'`
+ # Reject names that are not valid shell variable names.
+ expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
+ as_fn_error "invalid feature name: $ac_useropt"
+ ac_useropt_orig=$ac_useropt
+ ac_useropt=`$as_echo "$ac_useropt" | sed 's/[-+.]/_/g'`
+ case $ac_user_opts in
+ *"
+"enable_$ac_useropt"
+"*) ;;
+ *) ac_unrecognized_opts="$ac_unrecognized_opts$ac_unrecognized_sep--enable-$ac_useropt_orig"
+ ac_unrecognized_sep=', ';;
+ esac
+ eval enable_$ac_useropt=\$ac_optarg ;;
+
+ -exec-prefix | --exec_prefix | --exec-prefix | --exec-prefi \
+ | --exec-pref | --exec-pre | --exec-pr | --exec-p | --exec- \
+ | --exec | --exe | --ex)
+ ac_prev=exec_prefix ;;
+ -exec-prefix=* | --exec_prefix=* | --exec-prefix=* | --exec-prefi=* \
+ | --exec-pref=* | --exec-pre=* | --exec-pr=* | --exec-p=* | --exec-=* \
+ | --exec=* | --exe=* | --ex=*)
+ exec_prefix=$ac_optarg ;;
+
+ -gas | --gas | --ga | --g)
+ # Obsolete; use --with-gas.
+ with_gas=yes ;;
+
+ -help | --help | --hel | --he | -h)
+ ac_init_help=long ;;
+ -help=r* | --help=r* | --hel=r* | --he=r* | -hr*)
+ ac_init_help=recursive ;;
+ -help=s* | --help=s* | --hel=s* | --he=s* | -hs*)
+ ac_init_help=short ;;
+
+ -host | --host | --hos | --ho)
+ ac_prev=host_alias ;;
+ -host=* | --host=* | --hos=* | --ho=*)
+ host_alias=$ac_optarg ;;
+
+ -htmldir | --htmldir | --htmldi | --htmld | --html | --htm | --ht)
+ ac_prev=htmldir ;;
+ -htmldir=* | --htmldir=* | --htmldi=* | --htmld=* | --html=* | --htm=* \
+ | --ht=*)
+ htmldir=$ac_optarg ;;
+
+ -includedir | --includedir | --includedi | --included | --include \
+ | --includ | --inclu | --incl | --inc)
+ ac_prev=includedir ;;
+ -includedir=* | --includedir=* | --includedi=* | --included=* | --include=* \
+ | --includ=* | --inclu=* | --incl=* | --inc=*)
+ includedir=$ac_optarg ;;
+
+ -infodir | --infodir | --infodi | --infod | --info | --inf)
+ ac_prev=infodir ;;
+ -infodir=* | --infodir=* | --infodi=* | --infod=* | --info=* | --inf=*)
+ infodir=$ac_optarg ;;
+
+ -libdir | --libdir | --libdi | --libd)
+ ac_prev=libdir ;;
+ -libdir=* | --libdir=* | --libdi=* | --libd=*)
+ libdir=$ac_optarg ;;
+
+ -libexecdir | --libexecdir | --libexecdi | --libexecd | --libexec \
+ | --libexe | --libex | --libe)
+ ac_prev=libexecdir ;;
+ -libexecdir=* | --libexecdir=* | --libexecdi=* | --libexecd=* | --libexec=* \
+ | --libexe=* | --libex=* | --libe=*)
+ libexecdir=$ac_optarg ;;
+
+ -localedir | --localedir | --localedi | --localed | --locale)
+ ac_prev=localedir ;;
+ -localedir=* | --localedir=* | --localedi=* | --localed=* | --locale=*)
+ localedir=$ac_optarg ;;
+
+ -localstatedir | --localstatedir | --localstatedi | --localstated \
+ | --localstate | --localstat | --localsta | --localst | --locals)
+ ac_prev=localstatedir ;;
+ -localstatedir=* | --localstatedir=* | --localstatedi=* | --localstated=* \
+ | --localstate=* | --localstat=* | --localsta=* | --localst=* | --locals=*)
+ localstatedir=$ac_optarg ;;
+
+ -mandir | --mandir | --mandi | --mand | --man | --ma | --m)
+ ac_prev=mandir ;;
+ -mandir=* | --mandir=* | --mandi=* | --mand=* | --man=* | --ma=* | --m=*)
+ mandir=$ac_optarg ;;
+
+ -nfp | --nfp | --nf)
+ # Obsolete; use --without-fp.
+ with_fp=no ;;
+
+ -no-create | --no-create | --no-creat | --no-crea | --no-cre \
+ | --no-cr | --no-c | -n)
+ no_create=yes ;;
+
+ -no-recursion | --no-recursion | --no-recursio | --no-recursi \
+ | --no-recurs | --no-recur | --no-recu | --no-rec | --no-re | --no-r)
+ no_recursion=yes ;;
+
+ -oldincludedir | --oldincludedir | --oldincludedi | --oldincluded \
+ | --oldinclude | --oldinclud | --oldinclu | --oldincl | --oldinc \
+ | --oldin | --oldi | --old | --ol | --o)
+ ac_prev=oldincludedir ;;
+ -oldincludedir=* | --oldincludedir=* | --oldincludedi=* | --oldincluded=* \
+ | --oldinclude=* | --oldinclud=* | --oldinclu=* | --oldincl=* | --oldinc=* \
+ | --oldin=* | --oldi=* | --old=* | --ol=* | --o=*)
+ oldincludedir=$ac_optarg ;;
+
+ -prefix | --prefix | --prefi | --pref | --pre | --pr | --p)
+ ac_prev=prefix ;;
+ -prefix=* | --prefix=* | --prefi=* | --pref=* | --pre=* | --pr=* | --p=*)
+ prefix=$ac_optarg ;;
+
+ -program-prefix | --program-prefix | --program-prefi | --program-pref \
+ | --program-pre | --program-pr | --program-p)
+ ac_prev=program_prefix ;;
+ -program-prefix=* | --program-prefix=* | --program-prefi=* \
+ | --program-pref=* | --program-pre=* | --program-pr=* | --program-p=*)
+ program_prefix=$ac_optarg ;;
+
+ -program-suffix | --program-suffix | --program-suffi | --program-suff \
+ | --program-suf | --program-su | --program-s)
+ ac_prev=program_suffix ;;
+ -program-suffix=* | --program-suffix=* | --program-suffi=* \
+ | --program-suff=* | --program-suf=* | --program-su=* | --program-s=*)
+ program_suffix=$ac_optarg ;;
+
+ -program-transform-name | --program-transform-name \
+ | --program-transform-nam | --program-transform-na \
+ | --program-transform-n | --program-transform- \
+ | --program-transform | --program-transfor \
+ | --program-transfo | --program-transf \
+ | --program-trans | --program-tran \
+ | --progr-tra | --program-tr | --program-t)
+ ac_prev=program_transform_name ;;
+ -program-transform-name=* | --program-transform-name=* \
+ | --program-transform-nam=* | --program-transform-na=* \
+ | --program-transform-n=* | --program-transform-=* \
+ | --program-transform=* | --program-transfor=* \
+ | --program-transfo=* | --program-transf=* \
+ | --program-trans=* | --program-tran=* \
+ | --progr-tra=* | --program-tr=* | --program-t=*)
+ program_transform_name=$ac_optarg ;;
+
+ -pdfdir | --pdfdir | --pdfdi | --pdfd | --pdf | --pd)
+ ac_prev=pdfdir ;;
+ -pdfdir=* | --pdfdir=* | --pdfdi=* | --pdfd=* | --pdf=* | --pd=*)
+ pdfdir=$ac_optarg ;;
+
+ -psdir | --psdir | --psdi | --psd | --ps)
+ ac_prev=psdir ;;
+ -psdir=* | --psdir=* | --psdi=* | --psd=* | --ps=*)
+ psdir=$ac_optarg ;;
+
+ -q | -quiet | --quiet | --quie | --qui | --qu | --q \
+ | -silent | --silent | --silen | --sile | --sil)
+ silent=yes ;;
+
+ -sbindir | --sbindir | --sbindi | --sbind | --sbin | --sbi | --sb)
+ ac_prev=sbindir ;;
+ -sbindir=* | --sbindir=* | --sbindi=* | --sbind=* | --sbin=* \
+ | --sbi=* | --sb=*)
+ sbindir=$ac_optarg ;;
+
+ -sharedstatedir | --sharedstatedir | --sharedstatedi \
+ | --sharedstated | --sharedstate | --sharedstat | --sharedsta \
+ | --sharedst | --shareds | --shared | --share | --shar \
+ | --sha | --sh)
+ ac_prev=sharedstatedir ;;
+ -sharedstatedir=* | --sharedstatedir=* | --sharedstatedi=* \
+ | --sharedstated=* | --sharedstate=* | --sharedstat=* | --sharedsta=* \
+ | --sharedst=* | --shareds=* | --shared=* | --share=* | --shar=* \
+ | --sha=* | --sh=*)
+ sharedstatedir=$ac_optarg ;;
+
+ -site | --site | --sit)
+ ac_prev=site ;;
+ -site=* | --site=* | --sit=*)
+ site=$ac_optarg ;;
+
+ -srcdir | --srcdir | --srcdi | --srcd | --src | --sr)
+ ac_prev=srcdir ;;
+ -srcdir=* | --srcdir=* | --srcdi=* | --srcd=* | --src=* | --sr=*)
+ srcdir=$ac_optarg ;;
+
+ -sysconfdir | --sysconfdir | --sysconfdi | --sysconfd | --sysconf \
+ | --syscon | --sysco | --sysc | --sys | --sy)
+ ac_prev=sysconfdir ;;
+ -sysconfdir=* | --sysconfdir=* | --sysconfdi=* | --sysconfd=* | --sysconf=* \
+ | --syscon=* | --sysco=* | --sysc=* | --sys=* | --sy=*)
+ sysconfdir=$ac_optarg ;;
+
+ -target | --target | --targe | --targ | --tar | --ta | --t)
+ ac_prev=target_alias ;;
+ -target=* | --target=* | --targe=* | --targ=* | --tar=* | --ta=* | --t=*)
+ target_alias=$ac_optarg ;;
+
+ -v | -verbose | --verbose | --verbos | --verbo | --verb)
+ verbose=yes ;;
+
+ -version | --version | --versio | --versi | --vers | -V)
+ ac_init_version=: ;;
+
+ -with-* | --with-*)
+ ac_useropt=`expr "x$ac_option" : 'x-*with-\([^=]*\)'`
+ # Reject names that are not valid shell variable names.
+ expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
+ as_fn_error "invalid package name: $ac_useropt"
+ ac_useropt_orig=$ac_useropt
+ ac_useropt=`$as_echo "$ac_useropt" | sed 's/[-+.]/_/g'`
+ case $ac_user_opts in
+ *"
+"with_$ac_useropt"
+"*) ;;
+ *) ac_unrecognized_opts="$ac_unrecognized_opts$ac_unrecognized_sep--with-$ac_useropt_orig"
+ ac_unrecognized_sep=', ';;
+ esac
+ eval with_$ac_useropt=\$ac_optarg ;;
+
+ -without-* | --without-*)
+ ac_useropt=`expr "x$ac_option" : 'x-*without-\(.*\)'`
+ # Reject names that are not valid shell variable names.
+ expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
+ as_fn_error "invalid package name: $ac_useropt"
+ ac_useropt_orig=$ac_useropt
+ ac_useropt=`$as_echo "$ac_useropt" | sed 's/[-+.]/_/g'`
+ case $ac_user_opts in
+ *"
+"with_$ac_useropt"
+"*) ;;
+ *) ac_unrecognized_opts="$ac_unrecognized_opts$ac_unrecognized_sep--without-$ac_useropt_orig"
+ ac_unrecognized_sep=', ';;
+ esac
+ eval with_$ac_useropt=no ;;
+
+ --x)
+ # Obsolete; use --with-x.
+ with_x=yes ;;
+
+ -x-includes | --x-includes | --x-include | --x-includ | --x-inclu \
+ | --x-incl | --x-inc | --x-in | --x-i)
+ ac_prev=x_includes ;;
+ -x-includes=* | --x-includes=* | --x-include=* | --x-includ=* | --x-inclu=* \
+ | --x-incl=* | --x-inc=* | --x-in=* | --x-i=*)
+ x_includes=$ac_optarg ;;
+
+ -x-libraries | --x-libraries | --x-librarie | --x-librari \
+ | --x-librar | --x-libra | --x-libr | --x-lib | --x-li | --x-l)
+ ac_prev=x_libraries ;;
+ -x-libraries=* | --x-libraries=* | --x-librarie=* | --x-librari=* \
+ | --x-librar=* | --x-libra=* | --x-libr=* | --x-lib=* | --x-li=* | --x-l=*)
+ x_libraries=$ac_optarg ;;
+
+ -*) as_fn_error "unrecognized option: \`$ac_option'
+Try \`$0 --help' for more information."
+ ;;
+
+ *=*)
+ ac_envvar=`expr "x$ac_option" : 'x\([^=]*\)='`
+ # Reject names that are not valid shell variable names.
+ case $ac_envvar in #(
+ '' | [0-9]* | *[!_$as_cr_alnum]* )
+ as_fn_error "invalid variable name: \`$ac_envvar'" ;;
+ esac
+ eval $ac_envvar=\$ac_optarg
+ export $ac_envvar ;;
+
+ *)
+ # FIXME: should be removed in autoconf 3.0.
+ $as_echo "$as_me: WARNING: you should use --build, --host, --target" >&2
+ expr "x$ac_option" : ".*[^-._$as_cr_alnum]" >/dev/null &&
+ $as_echo "$as_me: WARNING: invalid host type: $ac_option" >&2
+ : ${build_alias=$ac_option} ${host_alias=$ac_option} ${target_alias=$ac_option}
+ ;;
+
+ esac
+done
+
+if test -n "$ac_prev"; then
+ ac_option=--`echo $ac_prev | sed 's/_/-/g'`
+ as_fn_error "missing argument to $ac_option"
+fi
+
+if test -n "$ac_unrecognized_opts"; then
+ case $enable_option_checking in
+ no) ;;
+ fatal) as_fn_error "unrecognized options: $ac_unrecognized_opts" ;;
+ *) $as_echo "$as_me: WARNING: unrecognized options: $ac_unrecognized_opts" >&2 ;;
+ esac
+fi
+
+# Check all directory arguments for consistency.
+for ac_var in exec_prefix prefix bindir sbindir libexecdir datarootdir \
+ datadir sysconfdir sharedstatedir localstatedir includedir \
+ oldincludedir docdir infodir htmldir dvidir pdfdir psdir \
+ libdir localedir mandir
+do
+ eval ac_val=\$$ac_var
+ # Remove trailing slashes.
+ case $ac_val in
+ */ )
+ ac_val=`expr "X$ac_val" : 'X\(.*[^/]\)' \| "X$ac_val" : 'X\(.*\)'`
+ eval $ac_var=\$ac_val;;
+ esac
+ # Be sure to have absolute directory names.
+ case $ac_val in
+ [\\/$]* | ?:[\\/]* ) continue;;
+ NONE | '' ) case $ac_var in *prefix ) continue;; esac;;
+ esac
+ as_fn_error "expected an absolute directory name for --$ac_var: $ac_val"
+done
+
+# There might be people who depend on the old broken behavior: `$host'
+# used to hold the argument of --host etc.
+# FIXME: To remove some day.
+build=$build_alias
+host=$host_alias
+target=$target_alias
+
+# FIXME: To remove some day.
+if test "x$host_alias" != x; then
+ if test "x$build_alias" = x; then
+ cross_compiling=maybe
+ $as_echo "$as_me: WARNING: If you wanted to set the --build type, don't use --host.
+ If a cross compiler is detected then cross compile mode will be used." >&2
+ elif test "x$build_alias" != "x$host_alias"; then
+ cross_compiling=yes
+ fi
+fi
+
+ac_tool_prefix=
+test -n "$host_alias" && ac_tool_prefix=$host_alias-
+
+test "$silent" = yes && exec 6>/dev/null
+
+
+ac_pwd=`pwd` && test -n "$ac_pwd" &&
+ac_ls_di=`ls -di .` &&
+ac_pwd_ls_di=`cd "$ac_pwd" && ls -di .` ||
+ as_fn_error "working directory cannot be determined"
+test "X$ac_ls_di" = "X$ac_pwd_ls_di" ||
+ as_fn_error "pwd does not report name of working directory"
+
+
+# Find the source files, if location was not specified.
+if test -z "$srcdir"; then
+ ac_srcdir_defaulted=yes
+ # Try the directory containing this script, then the parent directory.
+ ac_confdir=`$as_dirname -- "$as_myself" ||
+$as_expr X"$as_myself" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+ X"$as_myself" : 'X\(//\)[^/]' \| \
+ X"$as_myself" : 'X\(//\)$' \| \
+ X"$as_myself" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X"$as_myself" |
+ sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+ s//\1/
+ q
+ }
+ /^X\(\/\/\)[^/].*/{
+ s//\1/
+ q
+ }
+ /^X\(\/\/\)$/{
+ s//\1/
+ q
+ }
+ /^X\(\/\).*/{
+ s//\1/
+ q
+ }
+ s/.*/./; q'`
+ srcdir=$ac_confdir
+ if test ! -r "$srcdir/$ac_unique_file"; then
+ srcdir=..
+ fi
+else
+ ac_srcdir_defaulted=no
+fi
+if test ! -r "$srcdir/$ac_unique_file"; then
+ test "$ac_srcdir_defaulted" = yes && srcdir="$ac_confdir or .."
+ as_fn_error "cannot find sources ($ac_unique_file) in $srcdir"
+fi
+ac_msg="sources are in $srcdir, but \`cd $srcdir' does not work"
+ac_abs_confdir=`(
+ cd "$srcdir" && test -r "./$ac_unique_file" || as_fn_error "$ac_msg"
+ pwd)`
+# When building in place, set srcdir=.
+if test "$ac_abs_confdir" = "$ac_pwd"; then
+ srcdir=.
+fi
+# Remove unnecessary trailing slashes from srcdir.
+# Double slashes in file names in object file debugging info
+# mess up M-x gdb in Emacs.
+case $srcdir in
+*/) srcdir=`expr "X$srcdir" : 'X\(.*[^/]\)' \| "X$srcdir" : 'X\(.*\)'`;;
+esac
+for ac_var in $ac_precious_vars; do
+ eval ac_env_${ac_var}_set=\${${ac_var}+set}
+ eval ac_env_${ac_var}_value=\$${ac_var}
+ eval ac_cv_env_${ac_var}_set=\${${ac_var}+set}
+ eval ac_cv_env_${ac_var}_value=\$${ac_var}
+done
+
+#
+# Report the --help message.
+#
+if test "$ac_init_help" = "long"; then
+ # Omit some internal or obsolete options to make the list less imposing.
+ # This message is too long to be a string in the A/UX 3.1 sh.
+ cat <<_ACEOF
+\`configure' configures libpng 1.4.0 to adapt to many kinds of systems.
+
+Usage: $0 [OPTION]... [VAR=VALUE]...
+
+To assign environment variables (e.g., CC, CFLAGS...), specify them as
+VAR=VALUE. See below for descriptions of some of the useful variables.
+
+Defaults for the options are specified in brackets.
+
+Configuration:
+ -h, --help display this help and exit
+ --help=short display options specific to this package
+ --help=recursive display the short help of all the included packages
+ -V, --version display version information and exit
+ -q, --quiet, --silent do not print \`checking...' messages
+ --cache-file=FILE cache test results in FILE [disabled]
+ -C, --config-cache alias for \`--cache-file=config.cache'
+ -n, --no-create do not create output files
+ --srcdir=DIR find the sources in DIR [configure dir or \`..']
+
+Installation directories:
+ --prefix=PREFIX install architecture-independent files in PREFIX
+ [$ac_default_prefix]
+ --exec-prefix=EPREFIX install architecture-dependent files in EPREFIX
+ [PREFIX]
+
+By default, \`make install' will install all the files in
+\`$ac_default_prefix/bin', \`$ac_default_prefix/lib' etc. You can specify
+an installation prefix other than \`$ac_default_prefix' using \`--prefix',
+for instance \`--prefix=\$HOME'.
+
+For better control, use the options below.
+
+Fine tuning of the installation directories:
+ --bindir=DIR user executables [EPREFIX/bin]
+ --sbindir=DIR system admin executables [EPREFIX/sbin]
+ --libexecdir=DIR program executables [EPREFIX/libexec]
+ --sysconfdir=DIR read-only single-machine data [PREFIX/etc]
+ --sharedstatedir=DIR modifiable architecture-independent data [PREFIX/com]
+ --localstatedir=DIR modifiable single-machine data [PREFIX/var]
+ --libdir=DIR object code libraries [EPREFIX/lib]
+ --includedir=DIR C header files [PREFIX/include]
+ --oldincludedir=DIR C header files for non-gcc [/usr/include]
+ --datarootdir=DIR read-only arch.-independent data root [PREFIX/share]
+ --datadir=DIR read-only architecture-independent data [DATAROOTDIR]
+ --infodir=DIR info documentation [DATAROOTDIR/info]
+ --localedir=DIR locale-dependent data [DATAROOTDIR/locale]
+ --mandir=DIR man documentation [DATAROOTDIR/man]
+ --docdir=DIR documentation root [DATAROOTDIR/doc/libpng]
+ --htmldir=DIR html documentation [DOCDIR]
+ --dvidir=DIR dvi documentation [DOCDIR]
+ --pdfdir=DIR pdf documentation [DOCDIR]
+ --psdir=DIR ps documentation [DOCDIR]
+_ACEOF
+
+ cat <<\_ACEOF
+
+Program names:
+ --program-prefix=PREFIX prepend PREFIX to installed program names
+ --program-suffix=SUFFIX append SUFFIX to installed program names
+ --program-transform-name=PROGRAM run sed PROGRAM on installed program names
+
+System types:
+ --build=BUILD configure for building on BUILD [guessed]
+ --host=HOST cross-compile to build programs to run on HOST [BUILD]
+_ACEOF
+fi
+
+if test -n "$ac_init_help"; then
+ case $ac_init_help in
+ short | recursive ) echo "Configuration of libpng 1.4.0:";;
+ esac
+ cat <<\_ACEOF
+
+Optional Features:
+ --disable-option-checking ignore unrecognized --enable/--with options
+ --disable-FEATURE do not include FEATURE (same as --enable-FEATURE=no)
+ --enable-FEATURE[=ARG] include FEATURE [ARG=yes]
+ --enable-maintainer-mode enable make rules and dependencies not useful
+ (and sometimes confusing) to the casual installer
+ --disable-dependency-tracking speeds up one-time build
+ --enable-dependency-tracking do not reject slow dependency extractors
+ --enable-shared[=PKGS] build shared libraries [default=yes]
+ --enable-static[=PKGS] build static libraries [default=yes]
+ --enable-fast-install[=PKGS]
+ optimize for fast installation [default=yes]
+ --disable-libtool-lock avoid locking (might break parallel builds)
+
+Optional Packages:
+ --with-PACKAGE[=ARG] use PACKAGE [ARG=yes]
+ --without-PACKAGE do not use PACKAGE (same as --with-PACKAGE=no)
+ --with-gnu-ld assume the C compiler uses GNU ld [default=no]
+ --with-pic try to use only PIC/non-PIC objects [default=use
+ both]
+ --with-pkgconfigdir Use the specified pkgconfig dir (default is
+ libdir/pkgconfig)
+ --with-binconfigs Generate shell libpng-config scripts as well as
+ pkg-config data [default=yes]
+
+Some influential environment variables:
+ CC C compiler command
+ CFLAGS C compiler flags
+ LDFLAGS linker flags, e.g. -L<lib dir> if you have libraries in a
+ nonstandard directory <lib dir>
+ LIBS libraries to pass to the linker, e.g. -l<library>
+ CPPFLAGS (Objective) C/C++ preprocessor flags, e.g. -I<include dir> if
+ you have headers in a nonstandard directory <include dir>
+ CPP C preprocessor
+
+Use these variables to override the choices made by `configure' or to help
+it to find libraries and programs with nonstandard names/locations.
+
+Report bugs to <png-mng-implement@lists.sourceforge.net>.
+_ACEOF
+ac_status=$?
+fi
+
+if test "$ac_init_help" = "recursive"; then
+ # If there are subdirs, report their specific --help.
+ for ac_dir in : $ac_subdirs_all; do test "x$ac_dir" = x: && continue
+ test -d "$ac_dir" ||
+ { cd "$srcdir" && ac_pwd=`pwd` && srcdir=. && test -d "$ac_dir"; } ||
+ continue
+ ac_builddir=.
+
+case "$ac_dir" in
+.) ac_dir_suffix= ac_top_builddir_sub=. ac_top_build_prefix= ;;
+*)
+ ac_dir_suffix=/`$as_echo "$ac_dir" | sed 's|^\.[\\/]||'`
+ # A ".." for each directory in $ac_dir_suffix.
+ ac_top_builddir_sub=`$as_echo "$ac_dir_suffix" | sed 's|/[^\\/]*|/..|g;s|/||'`
+ case $ac_top_builddir_sub in
+ "") ac_top_builddir_sub=. ac_top_build_prefix= ;;
+ *) ac_top_build_prefix=$ac_top_builddir_sub/ ;;
+ esac ;;
+esac
+ac_abs_top_builddir=$ac_pwd
+ac_abs_builddir=$ac_pwd$ac_dir_suffix
+# for backward compatibility:
+ac_top_builddir=$ac_top_build_prefix
+
+case $srcdir in
+ .) # We are building in place.
+ ac_srcdir=.
+ ac_top_srcdir=$ac_top_builddir_sub
+ ac_abs_top_srcdir=$ac_pwd ;;
+ [\\/]* | ?:[\\/]* ) # Absolute name.
+ ac_srcdir=$srcdir$ac_dir_suffix;
+ ac_top_srcdir=$srcdir
+ ac_abs_top_srcdir=$srcdir ;;
+ *) # Relative name.
+ ac_srcdir=$ac_top_build_prefix$srcdir$ac_dir_suffix
+ ac_top_srcdir=$ac_top_build_prefix$srcdir
+ ac_abs_top_srcdir=$ac_pwd/$srcdir ;;
+esac
+ac_abs_srcdir=$ac_abs_top_srcdir$ac_dir_suffix
+
+ cd "$ac_dir" || { ac_status=$?; continue; }
+ # Check for guested configure.
+ if test -f "$ac_srcdir/configure.gnu"; then
+ echo &&
+ $SHELL "$ac_srcdir/configure.gnu" --help=recursive
+ elif test -f "$ac_srcdir/configure"; then
+ echo &&
+ $SHELL "$ac_srcdir/configure" --help=recursive
+ else
+ $as_echo "$as_me: WARNING: no configuration information is in $ac_dir" >&2
+ fi || ac_status=$?
+ cd "$ac_pwd" || { ac_status=$?; break; }
+ done
+fi
+
+test -n "$ac_init_help" && exit $ac_status
+if $ac_init_version; then
+ cat <<\_ACEOF
+libpng configure 1.4.0
+generated by GNU Autoconf 2.65
+
+Copyright (C) 2009 Free Software Foundation, Inc.
+This configure script is free software; the Free Software Foundation
+gives unlimited permission to copy, distribute and modify it.
+_ACEOF
+ exit
+fi
+
+## ------------------------ ##
+## Autoconf initialization. ##
+## ------------------------ ##
+
+# ac_fn_c_try_compile LINENO
+# --------------------------
+# Try to compile conftest.$ac_ext, and return whether this succeeded.
+ac_fn_c_try_compile ()
+{
+ as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+ rm -f conftest.$ac_objext
+ if { { ac_try="$ac_compile"
+case "(($ac_try" in
+ *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+ *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+ (eval "$ac_compile") 2>conftest.err
+ ac_status=$?
+ if test -s conftest.err; then
+ grep -v '^ *+' conftest.err >conftest.er1
+ cat conftest.er1 >&5
+ mv -f conftest.er1 conftest.err
+ fi
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; } && {
+ test -z "$ac_c_werror_flag" ||
+ test ! -s conftest.err
+ } && test -s conftest.$ac_objext; then :
+ ac_retval=0
+else
+ $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ ac_retval=1
+fi
+ eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+ as_fn_set_status $ac_retval
+
+} # ac_fn_c_try_compile
+
+# ac_fn_c_try_cpp LINENO
+# ----------------------
+# Try to preprocess conftest.$ac_ext, and return whether this succeeded.
+ac_fn_c_try_cpp ()
+{
+ as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+ if { { ac_try="$ac_cpp conftest.$ac_ext"
+case "(($ac_try" in
+ *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+ *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+ (eval "$ac_cpp conftest.$ac_ext") 2>conftest.err
+ ac_status=$?
+ if test -s conftest.err; then
+ grep -v '^ *+' conftest.err >conftest.er1
+ cat conftest.er1 >&5
+ mv -f conftest.er1 conftest.err
+ fi
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; } >/dev/null && {
+ test -z "$ac_c_preproc_warn_flag$ac_c_werror_flag" ||
+ test ! -s conftest.err
+ }; then :
+ ac_retval=0
+else
+ $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ ac_retval=1
+fi
+ eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+ as_fn_set_status $ac_retval
+
+} # ac_fn_c_try_cpp
+
+# ac_fn_c_try_link LINENO
+# -----------------------
+# Try to link conftest.$ac_ext, and return whether this succeeded.
+ac_fn_c_try_link ()
+{
+ as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+ rm -f conftest.$ac_objext conftest$ac_exeext
+ if { { ac_try="$ac_link"
+case "(($ac_try" in
+ *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+ *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+ (eval "$ac_link") 2>conftest.err
+ ac_status=$?
+ if test -s conftest.err; then
+ grep -v '^ *+' conftest.err >conftest.er1
+ cat conftest.er1 >&5
+ mv -f conftest.er1 conftest.err
+ fi
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; } && {
+ test -z "$ac_c_werror_flag" ||
+ test ! -s conftest.err
+ } && test -s conftest$ac_exeext && {
+ test "$cross_compiling" = yes ||
+ $as_test_x conftest$ac_exeext
+ }; then :
+ ac_retval=0
+else
+ $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ ac_retval=1
+fi
+ # Delete the IPA/IPO (Inter Procedural Analysis/Optimization) information
+ # created by the PGI compiler (conftest_ipa8_conftest.oo), as it would
+ # interfere with the next link command; also delete a directory that is
+ # left behind by Apple's compiler. We do this before executing the actions.
+ rm -rf conftest.dSYM conftest_ipa8_conftest.oo
+ eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+ as_fn_set_status $ac_retval
+
+} # ac_fn_c_try_link
+
+# ac_fn_c_check_header_compile LINENO HEADER VAR INCLUDES
+# -------------------------------------------------------
+# Tests whether HEADER exists and can be compiled using the include files in
+# INCLUDES, setting the cache variable VAR accordingly.
+ac_fn_c_check_header_compile ()
+{
+ as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
+$as_echo_n "checking for $2... " >&6; }
+if { as_var=$3; eval "test \"\${$as_var+set}\" = set"; }; then :
+ $as_echo_n "(cached) " >&6
+else
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+$4
+#include <$2>
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+ eval "$3=yes"
+else
+ eval "$3=no"
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+eval ac_res=\$$3
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+ eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+
+} # ac_fn_c_check_header_compile
+
+# ac_fn_c_try_run LINENO
+# ----------------------
+# Try to link conftest.$ac_ext, and return whether this succeeded. Assumes
+# that executables *can* be run.
+ac_fn_c_try_run ()
+{
+ as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+ if { { ac_try="$ac_link"
+case "(($ac_try" in
+ *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+ *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+ (eval "$ac_link") 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; } && { ac_try='./conftest$ac_exeext'
+ { { case "(($ac_try" in
+ *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+ *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+ (eval "$ac_try") 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; }; }; then :
+ ac_retval=0
+else
+ $as_echo "$as_me: program exited with status $ac_status" >&5
+ $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ ac_retval=$ac_status
+fi
+ rm -rf conftest.dSYM conftest_ipa8_conftest.oo
+ eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+ as_fn_set_status $ac_retval
+
+} # ac_fn_c_try_run
+
+# ac_fn_c_check_func LINENO FUNC VAR
+# ----------------------------------
+# Tests whether FUNC exists, setting the cache variable VAR accordingly
+ac_fn_c_check_func ()
+{
+ as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
+$as_echo_n "checking for $2... " >&6; }
+if { as_var=$3; eval "test \"\${$as_var+set}\" = set"; }; then :
+ $as_echo_n "(cached) " >&6
+else
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+/* Define $2 to an innocuous variant, in case <limits.h> declares $2.
+ For example, HP-UX 11i <limits.h> declares gettimeofday. */
+#define $2 innocuous_$2
+
+/* System header to define __stub macros and hopefully few prototypes,
+ which can conflict with char $2 (); below.
+ Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+ <limits.h> exists even on freestanding compilers. */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $2
+
+/* Override any GCC internal prototype to avoid an error.
+ Use char because int might match the return type of a GCC
+ builtin and then its argument prototype would still apply. */
+#ifdef __cplusplus
+extern "C"
+#endif
+char $2 ();
+/* The GNU C library defines this for functions which it implements
+ to always fail with ENOSYS. Some functions are actually named
+ something starting with __ and the normal name is an alias. */
+#if defined __stub_$2 || defined __stub___$2
+choke me
+#endif
+
+int
+main ()
+{
+return $2 ();
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+ eval "$3=yes"
+else
+ eval "$3=no"
+fi
+rm -f core conftest.err conftest.$ac_objext \
+ conftest$ac_exeext conftest.$ac_ext
+fi
+eval ac_res=\$$3
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+ eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+
+} # ac_fn_c_check_func
+
+# ac_fn_c_check_header_mongrel LINENO HEADER VAR INCLUDES
+# -------------------------------------------------------
+# Tests whether HEADER exists, giving a warning if it cannot be compiled using
+# the include files in INCLUDES and setting the cache variable VAR
+# accordingly.
+ac_fn_c_check_header_mongrel ()
+{
+ as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+ if { as_var=$3; eval "test \"\${$as_var+set}\" = set"; }; then :
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
+$as_echo_n "checking for $2... " >&6; }
+if { as_var=$3; eval "test \"\${$as_var+set}\" = set"; }; then :
+ $as_echo_n "(cached) " >&6
+fi
+eval ac_res=\$$3
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+else
+ # Is the header compilable?
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking $2 usability" >&5
+$as_echo_n "checking $2 usability... " >&6; }
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+$4
+#include <$2>
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+ ac_header_compiler=yes
+else
+ ac_header_compiler=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_header_compiler" >&5
+$as_echo "$ac_header_compiler" >&6; }
+
+# Is the header present?
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking $2 presence" >&5
+$as_echo_n "checking $2 presence... " >&6; }
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+#include <$2>
+_ACEOF
+if ac_fn_c_try_cpp "$LINENO"; then :
+ ac_header_preproc=yes
+else
+ ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_header_preproc" >&5
+$as_echo "$ac_header_preproc" >&6; }
+
+# So? What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in #((
+ yes:no: )
+ { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2: accepted by the compiler, rejected by the preprocessor!" >&5
+$as_echo "$as_me: WARNING: $2: accepted by the compiler, rejected by the preprocessor!" >&2;}
+ { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2: proceeding with the compiler's result" >&5
+$as_echo "$as_me: WARNING: $2: proceeding with the compiler's result" >&2;}
+ ;;
+ no:yes:* )
+ { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2: present but cannot be compiled" >&5
+$as_echo "$as_me: WARNING: $2: present but cannot be compiled" >&2;}
+ { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2: check for missing prerequisite headers?" >&5
+$as_echo "$as_me: WARNING: $2: check for missing prerequisite headers?" >&2;}
+ { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2: see the Autoconf documentation" >&5
+$as_echo "$as_me: WARNING: $2: see the Autoconf documentation" >&2;}
+ { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2: section \"Present But Cannot Be Compiled\"" >&5
+$as_echo "$as_me: WARNING: $2: section \"Present But Cannot Be Compiled\"" >&2;}
+ { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2: proceeding with the compiler's result" >&5
+$as_echo "$as_me: WARNING: $2: proceeding with the compiler's result" >&2;}
+( cat <<\_ASBOX
+## ------------------------------------------------------ ##
+## Report this to png-mng-implement@lists.sourceforge.net ##
+## ------------------------------------------------------ ##
+_ASBOX
+ ) | sed "s/^/$as_me: WARNING: /" >&2
+ ;;
+esac
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
+$as_echo_n "checking for $2... " >&6; }
+if { as_var=$3; eval "test \"\${$as_var+set}\" = set"; }; then :
+ $as_echo_n "(cached) " >&6
+else
+ eval "$3=\$ac_header_compiler"
+fi
+eval ac_res=\$$3
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+fi
+ eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+
+} # ac_fn_c_check_header_mongrel
+
+# ac_fn_c_check_type LINENO TYPE VAR INCLUDES
+# -------------------------------------------
+# Tests whether TYPE exists after having included INCLUDES, setting cache
+# variable VAR accordingly.
+ac_fn_c_check_type ()
+{
+ as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
+$as_echo_n "checking for $2... " >&6; }
+if { as_var=$3; eval "test \"\${$as_var+set}\" = set"; }; then :
+ $as_echo_n "(cached) " >&6
+else
+ eval "$3=no"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+$4
+int
+main ()
+{
+if (sizeof ($2))
+ return 0;
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+$4
+int
+main ()
+{
+if (sizeof (($2)))
+ return 0;
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+else
+ eval "$3=yes"
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+eval ac_res=\$$3
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+ eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+
+} # ac_fn_c_check_type
+cat >config.log <<_ACEOF
+This file contains any messages produced by compilers while
+running configure, to aid debugging if configure makes a mistake.
+
+It was created by libpng $as_me 1.4.0, which was
+generated by GNU Autoconf 2.65. Invocation command line was
+
+ $ $0 $@
+
+_ACEOF
+exec 5>>config.log
+{
+cat <<_ASUNAME
+## --------- ##
+## Platform. ##
+## --------- ##
+
+hostname = `(hostname || uname -n) 2>/dev/null | sed 1q`
+uname -m = `(uname -m) 2>/dev/null || echo unknown`
+uname -r = `(uname -r) 2>/dev/null || echo unknown`
+uname -s = `(uname -s) 2>/dev/null || echo unknown`
+uname -v = `(uname -v) 2>/dev/null || echo unknown`
+
+/usr/bin/uname -p = `(/usr/bin/uname -p) 2>/dev/null || echo unknown`
+/bin/uname -X = `(/bin/uname -X) 2>/dev/null || echo unknown`
+
+/bin/arch = `(/bin/arch) 2>/dev/null || echo unknown`
+/usr/bin/arch -k = `(/usr/bin/arch -k) 2>/dev/null || echo unknown`
+/usr/convex/getsysinfo = `(/usr/convex/getsysinfo) 2>/dev/null || echo unknown`
+/usr/bin/hostinfo = `(/usr/bin/hostinfo) 2>/dev/null || echo unknown`
+/bin/machine = `(/bin/machine) 2>/dev/null || echo unknown`
+/usr/bin/oslevel = `(/usr/bin/oslevel) 2>/dev/null || echo unknown`
+/bin/universe = `(/bin/universe) 2>/dev/null || echo unknown`
+
+_ASUNAME
+
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ $as_echo "PATH: $as_dir"
+ done
+IFS=$as_save_IFS
+
+} >&5
+
+cat >&5 <<_ACEOF
+
+
+## ----------- ##
+## Core tests. ##
+## ----------- ##
+
+_ACEOF
+
+
+# Keep a trace of the command line.
+# Strip out --no-create and --no-recursion so they do not pile up.
+# Strip out --silent because we don't want to record it for future runs.
+# Also quote any args containing shell meta-characters.
+# Make two passes to allow for proper duplicate-argument suppression.
+ac_configure_args=
+ac_configure_args0=
+ac_configure_args1=
+ac_must_keep_next=false
+for ac_pass in 1 2
+do
+ for ac_arg
+ do
+ case $ac_arg in
+ -no-create | --no-c* | -n | -no-recursion | --no-r*) continue ;;
+ -q | -quiet | --quiet | --quie | --qui | --qu | --q \
+ | -silent | --silent | --silen | --sile | --sil)
+ continue ;;
+ *\'*)
+ ac_arg=`$as_echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
+ esac
+ case $ac_pass in
+ 1) as_fn_append ac_configure_args0 " '$ac_arg'" ;;
+ 2)
+ as_fn_append ac_configure_args1 " '$ac_arg'"
+ if test $ac_must_keep_next = true; then
+ ac_must_keep_next=false # Got value, back to normal.
+ else
+ case $ac_arg in
+ *=* | --config-cache | -C | -disable-* | --disable-* \
+ | -enable-* | --enable-* | -gas | --g* | -nfp | --nf* \
+ | -q | -quiet | --q* | -silent | --sil* | -v | -verb* \
+ | -with-* | --with-* | -without-* | --without-* | --x)
+ case "$ac_configure_args0 " in
+ "$ac_configure_args1"*" '$ac_arg' "* ) continue ;;
+ esac
+ ;;
+ -* ) ac_must_keep_next=true ;;
+ esac
+ fi
+ as_fn_append ac_configure_args " '$ac_arg'"
+ ;;
+ esac
+ done
+done
+{ ac_configure_args0=; unset ac_configure_args0;}
+{ ac_configure_args1=; unset ac_configure_args1;}
+
+# When interrupted or exit'd, cleanup temporary files, and complete
+# config.log. We remove comments because anyway the quotes in there
+# would cause problems or look ugly.
+# WARNING: Use '\'' to represent an apostrophe within the trap.
+# WARNING: Do not start the trap code with a newline, due to a FreeBSD 4.0 bug.
+trap 'exit_status=$?
+ # Save into config.log some information that might help in debugging.
+ {
+ echo
+
+ cat <<\_ASBOX
+## ---------------- ##
+## Cache variables. ##
+## ---------------- ##
+_ASBOX
+ echo
+ # The following way of writing the cache mishandles newlines in values,
+(
+ for ac_var in `(set) 2>&1 | sed -n '\''s/^\([a-zA-Z_][a-zA-Z0-9_]*\)=.*/\1/p'\''`; do
+ eval ac_val=\$$ac_var
+ case $ac_val in #(
+ *${as_nl}*)
+ case $ac_var in #(
+ *_cv_*) { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: cache variable $ac_var contains a newline" >&5
+$as_echo "$as_me: WARNING: cache variable $ac_var contains a newline" >&2;} ;;
+ esac
+ case $ac_var in #(
+ _ | IFS | as_nl) ;; #(
+ BASH_ARGV | BASH_SOURCE) eval $ac_var= ;; #(
+ *) { eval $ac_var=; unset $ac_var;} ;;
+ esac ;;
+ esac
+ done
+ (set) 2>&1 |
+ case $as_nl`(ac_space='\'' '\''; set) 2>&1` in #(
+ *${as_nl}ac_space=\ *)
+ sed -n \
+ "s/'\''/'\''\\\\'\'''\''/g;
+ s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1='\''\\2'\''/p"
+ ;; #(
+ *)
+ sed -n "/^[_$as_cr_alnum]*_cv_[_$as_cr_alnum]*=/p"
+ ;;
+ esac |
+ sort
+)
+ echo
+
+ cat <<\_ASBOX
+## ----------------- ##
+## Output variables. ##
+## ----------------- ##
+_ASBOX
+ echo
+ for ac_var in $ac_subst_vars
+ do
+ eval ac_val=\$$ac_var
+ case $ac_val in
+ *\'\''*) ac_val=`$as_echo "$ac_val" | sed "s/'\''/'\''\\\\\\\\'\'''\''/g"`;;
+ esac
+ $as_echo "$ac_var='\''$ac_val'\''"
+ done | sort
+ echo
+
+ if test -n "$ac_subst_files"; then
+ cat <<\_ASBOX
+## ------------------- ##
+## File substitutions. ##
+## ------------------- ##
+_ASBOX
+ echo
+ for ac_var in $ac_subst_files
+ do
+ eval ac_val=\$$ac_var
+ case $ac_val in
+ *\'\''*) ac_val=`$as_echo "$ac_val" | sed "s/'\''/'\''\\\\\\\\'\'''\''/g"`;;
+ esac
+ $as_echo "$ac_var='\''$ac_val'\''"
+ done | sort
+ echo
+ fi
+
+ if test -s confdefs.h; then
+ cat <<\_ASBOX
+## ----------- ##
+## confdefs.h. ##
+## ----------- ##
+_ASBOX
+ echo
+ cat confdefs.h
+ echo
+ fi
+ test "$ac_signal" != 0 &&
+ $as_echo "$as_me: caught signal $ac_signal"
+ $as_echo "$as_me: exit $exit_status"
+ } >&5
+ rm -f core *.core core.conftest.* &&
+ rm -f -r conftest* confdefs* conf$$* $ac_clean_files &&
+ exit $exit_status
+' 0
+for ac_signal in 1 2 13 15; do
+ trap 'ac_signal='$ac_signal'; as_fn_exit 1' $ac_signal
+done
+ac_signal=0
+
+# confdefs.h avoids OS command line length limits that DEFS can exceed.
+rm -f -r conftest* confdefs.h
+
+$as_echo "/* confdefs.h */" > confdefs.h
+
+# Predefined preprocessor variables.
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_NAME "$PACKAGE_NAME"
+_ACEOF
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_TARNAME "$PACKAGE_TARNAME"
+_ACEOF
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_VERSION "$PACKAGE_VERSION"
+_ACEOF
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_STRING "$PACKAGE_STRING"
+_ACEOF
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_BUGREPORT "$PACKAGE_BUGREPORT"
+_ACEOF
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_URL "$PACKAGE_URL"
+_ACEOF
+
+
+# Let the site file select an alternate cache file if it wants to.
+# Prefer an explicitly selected file to automatically selected ones.
+ac_site_file1=NONE
+ac_site_file2=NONE
+if test -n "$CONFIG_SITE"; then
+ ac_site_file1=$CONFIG_SITE
+elif test "x$prefix" != xNONE; then
+ ac_site_file1=$prefix/share/config.site
+ ac_site_file2=$prefix/etc/config.site
+else
+ ac_site_file1=$ac_default_prefix/share/config.site
+ ac_site_file2=$ac_default_prefix/etc/config.site
+fi
+for ac_site_file in "$ac_site_file1" "$ac_site_file2"
+do
+ test "x$ac_site_file" = xNONE && continue
+ if test /dev/null != "$ac_site_file" && test -r "$ac_site_file"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: loading site script $ac_site_file" >&5
+$as_echo "$as_me: loading site script $ac_site_file" >&6;}
+ sed 's/^/| /' "$ac_site_file" >&5
+ . "$ac_site_file"
+ fi
+done
+
+if test -r "$cache_file"; then
+ # Some versions of bash will fail to source /dev/null (special files
+ # actually), so we avoid doing that. DJGPP emulates it as a regular file.
+ if test /dev/null != "$cache_file" && test -f "$cache_file"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: loading cache $cache_file" >&5
+$as_echo "$as_me: loading cache $cache_file" >&6;}
+ case $cache_file in
+ [\\/]* | ?:[\\/]* ) . "$cache_file";;
+ *) . "./$cache_file";;
+ esac
+ fi
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: creating cache $cache_file" >&5
+$as_echo "$as_me: creating cache $cache_file" >&6;}
+ >$cache_file
+fi
+
+# Check that the precious variables saved in the cache have kept the same
+# value.
+ac_cache_corrupted=false
+for ac_var in $ac_precious_vars; do
+ eval ac_old_set=\$ac_cv_env_${ac_var}_set
+ eval ac_new_set=\$ac_env_${ac_var}_set
+ eval ac_old_val=\$ac_cv_env_${ac_var}_value
+ eval ac_new_val=\$ac_env_${ac_var}_value
+ case $ac_old_set,$ac_new_set in
+ set,)
+ { $as_echo "$as_me:${as_lineno-$LINENO}: error: \`$ac_var' was set to \`$ac_old_val' in the previous run" >&5
+$as_echo "$as_me: error: \`$ac_var' was set to \`$ac_old_val' in the previous run" >&2;}
+ ac_cache_corrupted=: ;;
+ ,set)
+ { $as_echo "$as_me:${as_lineno-$LINENO}: error: \`$ac_var' was not set in the previous run" >&5
+$as_echo "$as_me: error: \`$ac_var' was not set in the previous run" >&2;}
+ ac_cache_corrupted=: ;;
+ ,);;
+ *)
+ if test "x$ac_old_val" != "x$ac_new_val"; then
+ # differences in whitespace do not lead to failure.
+ ac_old_val_w=`echo x $ac_old_val`
+ ac_new_val_w=`echo x $ac_new_val`
+ if test "$ac_old_val_w" != "$ac_new_val_w"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: error: \`$ac_var' has changed since the previous run:" >&5
+$as_echo "$as_me: error: \`$ac_var' has changed since the previous run:" >&2;}
+ ac_cache_corrupted=:
+ else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: warning: ignoring whitespace changes in \`$ac_var' since the previous run:" >&5
+$as_echo "$as_me: warning: ignoring whitespace changes in \`$ac_var' since the previous run:" >&2;}
+ eval $ac_var=\$ac_old_val
+ fi
+ { $as_echo "$as_me:${as_lineno-$LINENO}: former value: \`$ac_old_val'" >&5
+$as_echo "$as_me: former value: \`$ac_old_val'" >&2;}
+ { $as_echo "$as_me:${as_lineno-$LINENO}: current value: \`$ac_new_val'" >&5
+$as_echo "$as_me: current value: \`$ac_new_val'" >&2;}
+ fi;;
+ esac
+ # Pass precious variables to config.status.
+ if test "$ac_new_set" = set; then
+ case $ac_new_val in
+ *\'*) ac_arg=$ac_var=`$as_echo "$ac_new_val" | sed "s/'/'\\\\\\\\''/g"` ;;
+ *) ac_arg=$ac_var=$ac_new_val ;;
+ esac
+ case " $ac_configure_args " in
+ *" '$ac_arg' "*) ;; # Avoid dups. Use of quotes ensures accuracy.
+ *) as_fn_append ac_configure_args " '$ac_arg'" ;;
+ esac
+ fi
+done
+if $ac_cache_corrupted; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+ { $as_echo "$as_me:${as_lineno-$LINENO}: error: changes in the environment can compromise the build" >&5
+$as_echo "$as_me: error: changes in the environment can compromise the build" >&2;}
+ as_fn_error "run \`make distclean' and/or \`rm $cache_file' and start over" "$LINENO" 5
+fi
+## -------------------- ##
+## Main body of script. ##
+## -------------------- ##
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+am__api_version='1.11'
+
+ac_aux_dir=
+for ac_dir in "$srcdir" "$srcdir/.." "$srcdir/../.."; do
+ for ac_t in install-sh install.sh shtool; do
+ if test -f "$ac_dir/$ac_t"; then
+ ac_aux_dir=$ac_dir
+ ac_install_sh="$ac_aux_dir/$ac_t -c"
+ break 2
+ fi
+ done
+done
+if test -z "$ac_aux_dir"; then
+ as_fn_error "cannot find install-sh, install.sh, or shtool in \"$srcdir\" \"$srcdir/..\" \"$srcdir/../..\"" "$LINENO" 5
+fi
+
+# These three variables are undocumented and unsupported,
+# and are intended to be withdrawn in a future Autoconf release.
+# They can cause serious problems if a builder's source tree is in a directory
+# whose full name contains unusual characters.
+ac_config_guess="$SHELL $ac_aux_dir/config.guess" # Please don't use this var.
+ac_config_sub="$SHELL $ac_aux_dir/config.sub" # Please don't use this var.
+ac_configure="$SHELL $ac_aux_dir/configure" # Please don't use this var.
+
+
+# Find a good install program. We prefer a C program (faster),
+# so one script is as good as another. But avoid the broken or
+# incompatible versions:
+# SysV /etc/install, /usr/sbin/install
+# SunOS /usr/etc/install
+# IRIX /sbin/install
+# AIX /bin/install
+# AmigaOS /C/install, which installs bootblocks on floppy discs
+# AIX 4 /usr/bin/installbsd, which doesn't work without a -g flag
+# AFS /usr/afsws/bin/install, which mishandles nonexistent args
+# SVR4 /usr/ucb/install, which tries to use the nonexistent group "staff"
+# OS/2's system install, which has a completely different semantic
+# ./install, which can be erroneously created by make from ./install.sh.
+# Reject install programs that cannot install multiple files.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for a BSD-compatible install" >&5
+$as_echo_n "checking for a BSD-compatible install... " >&6; }
+if test -z "$INSTALL"; then
+if test "${ac_cv_path_install+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ # Account for people who put trailing slashes in PATH elements.
+case $as_dir/ in #((
+ ./ | .// | /[cC]/* | \
+ /etc/* | /usr/sbin/* | /usr/etc/* | /sbin/* | /usr/afsws/bin/* | \
+ ?:[\\/]os2[\\/]install[\\/]* | ?:[\\/]OS2[\\/]INSTALL[\\/]* | \
+ /usr/ucb/* ) ;;
+ *)
+ # OSF1 and SCO ODT 3.0 have their own names for install.
+ # Don't use installbsd from OSF since it installs stuff as root
+ # by default.
+ for ac_prog in ginstall scoinst install; do
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_prog$ac_exec_ext" && $as_test_x "$as_dir/$ac_prog$ac_exec_ext"; }; then
+ if test $ac_prog = install &&
+ grep dspmsg "$as_dir/$ac_prog$ac_exec_ext" >/dev/null 2>&1; then
+ # AIX install. It has an incompatible calling convention.
+ :
+ elif test $ac_prog = install &&
+ grep pwplus "$as_dir/$ac_prog$ac_exec_ext" >/dev/null 2>&1; then
+ # program-specific install script used by HP pwplus--don't use.
+ :
+ else
+ rm -rf conftest.one conftest.two conftest.dir
+ echo one > conftest.one
+ echo two > conftest.two
+ mkdir conftest.dir
+ if "$as_dir/$ac_prog$ac_exec_ext" -c conftest.one conftest.two "`pwd`/conftest.dir" &&
+ test -s conftest.one && test -s conftest.two &&
+ test -s conftest.dir/conftest.one &&
+ test -s conftest.dir/conftest.two
+ then
+ ac_cv_path_install="$as_dir/$ac_prog$ac_exec_ext -c"
+ break 3
+ fi
+ fi
+ fi
+ done
+ done
+ ;;
+esac
+
+ done
+IFS=$as_save_IFS
+
+rm -rf conftest.one conftest.two conftest.dir
+
+fi
+ if test "${ac_cv_path_install+set}" = set; then
+ INSTALL=$ac_cv_path_install
+ else
+ # As a last resort, use the slow shell script. Don't cache a
+ # value for INSTALL within a source directory, because that will
+ # break other packages using the cache if that directory is
+ # removed, or if the value is a relative name.
+ INSTALL=$ac_install_sh
+ fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $INSTALL" >&5
+$as_echo "$INSTALL" >&6; }
+
+# Use test -z because SunOS4 sh mishandles braces in ${var-val}.
+# It thinks the first close brace ends the variable substitution.
+test -z "$INSTALL_PROGRAM" && INSTALL_PROGRAM='${INSTALL}'
+
+test -z "$INSTALL_SCRIPT" && INSTALL_SCRIPT='${INSTALL}'
+
+test -z "$INSTALL_DATA" && INSTALL_DATA='${INSTALL} -m 644'
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether build environment is sane" >&5
+$as_echo_n "checking whether build environment is sane... " >&6; }
+# Just in case
+sleep 1
+echo timestamp > conftest.file
+# Reject unsafe characters in $srcdir or the absolute working directory
+# name. Accept space and tab only in the latter.
+am_lf='
+'
+case `pwd` in
+ *[\\\"\#\$\&\'\`$am_lf]*)
+ as_fn_error "unsafe absolute working directory name" "$LINENO" 5;;
+esac
+case $srcdir in
+ *[\\\"\#\$\&\'\`$am_lf\ \ ]*)
+ as_fn_error "unsafe srcdir value: \`$srcdir'" "$LINENO" 5;;
+esac
+
+# Do `set' in a subshell so we don't clobber the current shell's
+# arguments. Must try -L first in case configure is actually a
+# symlink; some systems play weird games with the mod time of symlinks
+# (eg FreeBSD returns the mod time of the symlink's containing
+# directory).
+if (
+ set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
+ if test "$*" = "X"; then
+ # -L didn't work.
+ set X `ls -t "$srcdir/configure" conftest.file`
+ fi
+ rm -f conftest.file
+ if test "$*" != "X $srcdir/configure conftest.file" \
+ && test "$*" != "X conftest.file $srcdir/configure"; then
+
+ # If neither matched, then we have a broken ls. This can happen
+ # if, for instance, CONFIG_SHELL is bash and it inherits a
+ # broken ls alias from the environment. This has actually
+ # happened. Such a system could not be considered "sane".
+ as_fn_error "ls -t appears to fail. Make sure there is not a broken
+alias in your environment" "$LINENO" 5
+ fi
+
+ test "$2" = conftest.file
+ )
+then
+ # Ok.
+ :
+else
+ as_fn_error "newly created file is older than distributed files!
+Check your system clock" "$LINENO" 5
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+test "$program_prefix" != NONE &&
+ program_transform_name="s&^&$program_prefix&;$program_transform_name"
+# Use a double $ so make ignores it.
+test "$program_suffix" != NONE &&
+ program_transform_name="s&\$&$program_suffix&;$program_transform_name"
+# Double any \ or $.
+# By default was `s,x,x', remove it if useless.
+ac_script='s/[\\$]/&&/g;s/;s,x,x,$//'
+program_transform_name=`$as_echo "$program_transform_name" | sed "$ac_script"`
+
+# expand $ac_aux_dir to an absolute path
+am_aux_dir=`cd $ac_aux_dir && pwd`
+
+if test x"${MISSING+set}" != xset; then
+ case $am_aux_dir in
+ *\ * | *\ *)
+ MISSING="\${SHELL} \"$am_aux_dir/missing\"" ;;
+ *)
+ MISSING="\${SHELL} $am_aux_dir/missing" ;;
+ esac
+fi
+# Use eval to expand $SHELL
+if eval "$MISSING --run true"; then
+ am_missing_run="$MISSING --run "
+else
+ am_missing_run=
+ { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: \`missing' script is too old or missing" >&5
+$as_echo "$as_me: WARNING: \`missing' script is too old or missing" >&2;}
+fi
+
+if test x"${install_sh}" != xset; then
+ case $am_aux_dir in
+ *\ * | *\ *)
+ install_sh="\${SHELL} '$am_aux_dir/install-sh'" ;;
+ *)
+ install_sh="\${SHELL} $am_aux_dir/install-sh"
+ esac
+fi
+
+# Installed binaries are usually stripped using `strip' when the user
+# run `make install-strip'. However `strip' might not be the right
+# tool to use in cross-compilation environments, therefore Automake
+# will honor the `STRIP' environment variable to overrule this program.
+if test "$cross_compiling" != no; then
+ if test -n "$ac_tool_prefix"; then
+ # Extract the first word of "${ac_tool_prefix}strip", so it can be a program name with args.
+set dummy ${ac_tool_prefix}strip; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_STRIP+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$STRIP"; then
+ ac_cv_prog_STRIP="$STRIP" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_STRIP="${ac_tool_prefix}strip"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+STRIP=$ac_cv_prog_STRIP
+if test -n "$STRIP"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $STRIP" >&5
+$as_echo "$STRIP" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_STRIP"; then
+ ac_ct_STRIP=$STRIP
+ # Extract the first word of "strip", so it can be a program name with args.
+set dummy strip; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_STRIP+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$ac_ct_STRIP"; then
+ ac_cv_prog_ac_ct_STRIP="$ac_ct_STRIP" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_ac_ct_STRIP="strip"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_STRIP=$ac_cv_prog_ac_ct_STRIP
+if test -n "$ac_ct_STRIP"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_STRIP" >&5
+$as_echo "$ac_ct_STRIP" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+ if test "x$ac_ct_STRIP" = x; then
+ STRIP=":"
+ else
+ case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+ STRIP=$ac_ct_STRIP
+ fi
+else
+ STRIP="$ac_cv_prog_STRIP"
+fi
+
+fi
+INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for a thread-safe mkdir -p" >&5
+$as_echo_n "checking for a thread-safe mkdir -p... " >&6; }
+if test -z "$MKDIR_P"; then
+ if test "${ac_cv_path_mkdir+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH$PATH_SEPARATOR/opt/sfw/bin
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_prog in mkdir gmkdir; do
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ { test -f "$as_dir/$ac_prog$ac_exec_ext" && $as_test_x "$as_dir/$ac_prog$ac_exec_ext"; } || continue
+ case `"$as_dir/$ac_prog$ac_exec_ext" --version 2>&1` in #(
+ 'mkdir (GNU coreutils) '* | \
+ 'mkdir (coreutils) '* | \
+ 'mkdir (fileutils) '4.1*)
+ ac_cv_path_mkdir=$as_dir/$ac_prog$ac_exec_ext
+ break 3;;
+ esac
+ done
+ done
+ done
+IFS=$as_save_IFS
+
+fi
+
+ test -d ./--version && rmdir ./--version
+ if test "${ac_cv_path_mkdir+set}" = set; then
+ MKDIR_P="$ac_cv_path_mkdir -p"
+ else
+ # As a last resort, use the slow shell script. Don't cache a
+ # value for MKDIR_P within a source directory, because that will
+ # break other packages using the cache if that directory is
+ # removed, or if the value is a relative name.
+ MKDIR_P="$ac_install_sh -d"
+ fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $MKDIR_P" >&5
+$as_echo "$MKDIR_P" >&6; }
+
+mkdir_p="$MKDIR_P"
+case $mkdir_p in
+ [\\/$]* | ?:[\\/]*) ;;
+ */*) mkdir_p="\$(top_builddir)/$mkdir_p" ;;
+esac
+
+for ac_prog in gawk mawk nawk awk
+do
+ # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_AWK+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$AWK"; then
+ ac_cv_prog_AWK="$AWK" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_AWK="$ac_prog"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+AWK=$ac_cv_prog_AWK
+if test -n "$AWK"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $AWK" >&5
+$as_echo "$AWK" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+ test -n "$AWK" && break
+done
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether ${MAKE-make} sets \$(MAKE)" >&5
+$as_echo_n "checking whether ${MAKE-make} sets \$(MAKE)... " >&6; }
+set x ${MAKE-make}
+ac_make=`$as_echo "$2" | sed 's/+/p/g; s/[^a-zA-Z0-9_]/_/g'`
+if { as_var=ac_cv_prog_make_${ac_make}_set; eval "test \"\${$as_var+set}\" = set"; }; then :
+ $as_echo_n "(cached) " >&6
+else
+ cat >conftest.make <<\_ACEOF
+SHELL = /bin/sh
+all:
+ @echo '@@@%%%=$(MAKE)=@@@%%%'
+_ACEOF
+# GNU make sometimes prints "make[1]: Entering...", which would confuse us.
+case `${MAKE-make} -f conftest.make 2>/dev/null` in
+ *@@@%%%=?*=@@@%%%*)
+ eval ac_cv_prog_make_${ac_make}_set=yes;;
+ *)
+ eval ac_cv_prog_make_${ac_make}_set=no;;
+esac
+rm -f conftest.make
+fi
+if eval test \$ac_cv_prog_make_${ac_make}_set = yes; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+ SET_MAKE=
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+ SET_MAKE="MAKE=${MAKE-make}"
+fi
+
+rm -rf .tst 2>/dev/null
+mkdir .tst 2>/dev/null
+if test -d .tst; then
+ am__leading_dot=.
+else
+ am__leading_dot=_
+fi
+rmdir .tst 2>/dev/null
+
+if test "`cd $srcdir && pwd`" != "`pwd`"; then
+ # Use -I$(srcdir) only when $(srcdir) != ., so that make's output
+ # is not polluted with repeated "-I."
+ am__isrc=' -I$(srcdir)'
+ # test to see if srcdir already configured
+ if test -f $srcdir/config.status; then
+ as_fn_error "source directory already configured; run \"make distclean\" there first" "$LINENO" 5
+ fi
+fi
+
+# test whether we have cygpath
+if test -z "$CYGPATH_W"; then
+ if (cygpath --version) >/dev/null 2>/dev/null; then
+ CYGPATH_W='cygpath -w'
+ else
+ CYGPATH_W=echo
+ fi
+fi
+
+
+# Define the identity of the package.
+ PACKAGE='libpng'
+ VERSION='1.4.0'
+
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE "$PACKAGE"
+_ACEOF
+
+
+cat >>confdefs.h <<_ACEOF
+#define VERSION "$VERSION"
+_ACEOF
+
+# Some tools Automake needs.
+
+ACLOCAL=${ACLOCAL-"${am_missing_run}aclocal-${am__api_version}"}
+
+
+AUTOCONF=${AUTOCONF-"${am_missing_run}autoconf"}
+
+
+AUTOMAKE=${AUTOMAKE-"${am_missing_run}automake-${am__api_version}"}
+
+
+AUTOHEADER=${AUTOHEADER-"${am_missing_run}autoheader"}
+
+
+MAKEINFO=${MAKEINFO-"${am_missing_run}makeinfo"}
+
+# We need awk for the "check" target. The system "awk" is bad on
+# some platforms.
+# Always define AMTAR for backward compatibility.
+
+AMTAR=${AMTAR-"${am_missing_run}tar"}
+
+am__tar='${AMTAR} chof - "$$tardir"'; am__untar='${AMTAR} xf -'
+
+
+
+
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether to enable maintainer-specific portions of Makefiles" >&5
+$as_echo_n "checking whether to enable maintainer-specific portions of Makefiles... " >&6; }
+ # Check whether --enable-maintainer-mode was given.
+if test "${enable_maintainer_mode+set}" = set; then :
+ enableval=$enable_maintainer_mode; USE_MAINTAINER_MODE=$enableval
+else
+ USE_MAINTAINER_MODE=no
+fi
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $USE_MAINTAINER_MODE" >&5
+$as_echo "$USE_MAINTAINER_MODE" >&6; }
+ if test $USE_MAINTAINER_MODE = yes; then
+ MAINTAINER_MODE_TRUE=
+ MAINTAINER_MODE_FALSE='#'
+else
+ MAINTAINER_MODE_TRUE='#'
+ MAINTAINER_MODE_FALSE=
+fi
+
+ MAINT=$MAINTAINER_MODE_TRUE
+
+
+
+PNGLIB_VERSION=1.4.0
+PNGLIB_MAJOR=1
+PNGLIB_MINOR=4
+PNGLIB_RELEASE=0
+
+
+
+ac_config_headers="$ac_config_headers config.h"
+
+
+# Checks for programs.
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+if test -n "$ac_tool_prefix"; then
+ # Extract the first word of "${ac_tool_prefix}gcc", so it can be a program name with args.
+set dummy ${ac_tool_prefix}gcc; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_CC+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$CC"; then
+ ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_CC="${ac_tool_prefix}gcc"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+$as_echo "$CC" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_CC"; then
+ ac_ct_CC=$CC
+ # Extract the first word of "gcc", so it can be a program name with args.
+set dummy gcc; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_CC+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$ac_ct_CC"; then
+ ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_ac_ct_CC="gcc"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_CC=$ac_cv_prog_ac_ct_CC
+if test -n "$ac_ct_CC"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5
+$as_echo "$ac_ct_CC" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+ if test "x$ac_ct_CC" = x; then
+ CC=""
+ else
+ case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+ CC=$ac_ct_CC
+ fi
+else
+ CC="$ac_cv_prog_CC"
+fi
+
+if test -z "$CC"; then
+ if test -n "$ac_tool_prefix"; then
+ # Extract the first word of "${ac_tool_prefix}cc", so it can be a program name with args.
+set dummy ${ac_tool_prefix}cc; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_CC+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$CC"; then
+ ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_CC="${ac_tool_prefix}cc"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+$as_echo "$CC" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+ fi
+fi
+if test -z "$CC"; then
+ # Extract the first word of "cc", so it can be a program name with args.
+set dummy cc; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_CC+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$CC"; then
+ ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+ ac_prog_rejected=no
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ if test "$as_dir/$ac_word$ac_exec_ext" = "/usr/ucb/cc"; then
+ ac_prog_rejected=yes
+ continue
+ fi
+ ac_cv_prog_CC="cc"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+if test $ac_prog_rejected = yes; then
+ # We found a bogon in the path, so make sure we never use it.
+ set dummy $ac_cv_prog_CC
+ shift
+ if test $# != 0; then
+ # We chose a different compiler from the bogus one.
+ # However, it has the same basename, so the bogon will be chosen
+ # first if we set CC to just the basename; use the full file name.
+ shift
+ ac_cv_prog_CC="$as_dir/$ac_word${1+' '}$@"
+ fi
+fi
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+$as_echo "$CC" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$CC"; then
+ if test -n "$ac_tool_prefix"; then
+ for ac_prog in cl.exe
+ do
+ # Extract the first word of "$ac_tool_prefix$ac_prog", so it can be a program name with args.
+set dummy $ac_tool_prefix$ac_prog; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_CC+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$CC"; then
+ ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_CC="$ac_tool_prefix$ac_prog"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+$as_echo "$CC" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+ test -n "$CC" && break
+ done
+fi
+if test -z "$CC"; then
+ ac_ct_CC=$CC
+ for ac_prog in cl.exe
+do
+ # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_CC+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$ac_ct_CC"; then
+ ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_ac_ct_CC="$ac_prog"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_CC=$ac_cv_prog_ac_ct_CC
+if test -n "$ac_ct_CC"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5
+$as_echo "$ac_ct_CC" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+ test -n "$ac_ct_CC" && break
+done
+
+ if test "x$ac_ct_CC" = x; then
+ CC=""
+ else
+ case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+ CC=$ac_ct_CC
+ fi
+fi
+
+fi
+
+
+test -z "$CC" && { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error "no acceptable C compiler found in \$PATH
+See \`config.log' for more details." "$LINENO" 5; }
+
+# Provide some information about the compiler.
+$as_echo "$as_me:${as_lineno-$LINENO}: checking for C compiler version" >&5
+set X $ac_compile
+ac_compiler=$2
+for ac_option in --version -v -V -qversion; do
+ { { ac_try="$ac_compiler $ac_option >&5"
+case "(($ac_try" in
+ *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+ *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+ (eval "$ac_compiler $ac_option >&5") 2>conftest.err
+ ac_status=$?
+ if test -s conftest.err; then
+ sed '10a\
+... rest of stderr output deleted ...
+ 10q' conftest.err >conftest.er1
+ cat conftest.er1 >&5
+ fi
+ rm -f conftest.er1 conftest.err
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; }
+done
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+int
+main ()
+{
+
+ ;
+ return 0;
+}
+_ACEOF
+ac_clean_files_save=$ac_clean_files
+ac_clean_files="$ac_clean_files a.out a.out.dSYM a.exe b.out"
+# Try to create an executable without -o first, disregard a.out.
+# It will help us diagnose broken compilers, and finding out an intuition
+# of exeext.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the C compiler works" >&5
+$as_echo_n "checking whether the C compiler works... " >&6; }
+ac_link_default=`$as_echo "$ac_link" | sed 's/ -o *conftest[^ ]*//'`
+
+# The possible output files:
+ac_files="a.out conftest.exe conftest a.exe a_out.exe b.out conftest.*"
+
+ac_rmfiles=
+for ac_file in $ac_files
+do
+ case $ac_file in
+ *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM | *.o | *.obj ) ;;
+ * ) ac_rmfiles="$ac_rmfiles $ac_file";;
+ esac
+done
+rm -f $ac_rmfiles
+
+if { { ac_try="$ac_link_default"
+case "(($ac_try" in
+ *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+ *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+ (eval "$ac_link_default") 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; }; then :
+ # Autoconf-2.13 could set the ac_cv_exeext variable to `no'.
+# So ignore a value of `no', otherwise this would lead to `EXEEXT = no'
+# in a Makefile. We should not override ac_cv_exeext if it was cached,
+# so that the user can short-circuit this test for compilers unknown to
+# Autoconf.
+for ac_file in $ac_files ''
+do
+ test -f "$ac_file" || continue
+ case $ac_file in
+ *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM | *.o | *.obj )
+ ;;
+ [ab].out )
+ # We found the default executable, but exeext='' is most
+ # certainly right.
+ break;;
+ *.* )
+ if test "${ac_cv_exeext+set}" = set && test "$ac_cv_exeext" != no;
+ then :; else
+ ac_cv_exeext=`expr "$ac_file" : '[^.]*\(\..*\)'`
+ fi
+ # We set ac_cv_exeext here because the later test for it is not
+ # safe: cross compilers may not add the suffix if given an `-o'
+ # argument, so we may need to know it at that point already.
+ # Even if this section looks crufty: it has the advantage of
+ # actually working.
+ break;;
+ * )
+ break;;
+ esac
+done
+test "$ac_cv_exeext" = no && ac_cv_exeext=
+
+else
+ ac_file=''
+fi
+if test -z "$ac_file"; then :
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+$as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+{ { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+{ as_fn_set_status 77
+as_fn_error "C compiler cannot create executables
+See \`config.log' for more details." "$LINENO" 5; }; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for C compiler default output file name" >&5
+$as_echo_n "checking for C compiler default output file name... " >&6; }
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_file" >&5
+$as_echo "$ac_file" >&6; }
+ac_exeext=$ac_cv_exeext
+
+rm -f -r a.out a.out.dSYM a.exe conftest$ac_cv_exeext b.out
+ac_clean_files=$ac_clean_files_save
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for suffix of executables" >&5
+$as_echo_n "checking for suffix of executables... " >&6; }
+if { { ac_try="$ac_link"
+case "(($ac_try" in
+ *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+ *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+ (eval "$ac_link") 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; }; then :
+ # If both `conftest.exe' and `conftest' are `present' (well, observable)
+# catch `conftest.exe'. For instance with Cygwin, `ls conftest' will
+# work properly (i.e., refer to `conftest.exe'), while it won't with
+# `rm'.
+for ac_file in conftest.exe conftest conftest.*; do
+ test -f "$ac_file" || continue
+ case $ac_file in
+ *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM | *.o | *.obj ) ;;
+ *.* ) ac_cv_exeext=`expr "$ac_file" : '[^.]*\(\..*\)'`
+ break;;
+ * ) break;;
+ esac
+done
+else
+ { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error "cannot compute suffix of executables: cannot compile and link
+See \`config.log' for more details." "$LINENO" 5; }
+fi
+rm -f conftest conftest$ac_cv_exeext
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_exeext" >&5
+$as_echo "$ac_cv_exeext" >&6; }
+
+rm -f conftest.$ac_ext
+EXEEXT=$ac_cv_exeext
+ac_exeext=$EXEEXT
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+#include <stdio.h>
+int
+main ()
+{
+FILE *f = fopen ("conftest.out", "w");
+ return ferror (f) || fclose (f) != 0;
+
+ ;
+ return 0;
+}
+_ACEOF
+ac_clean_files="$ac_clean_files conftest.out"
+# Check that the compiler produces executables we can run. If not, either
+# the compiler is broken, or we cross compile.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether we are cross compiling" >&5
+$as_echo_n "checking whether we are cross compiling... " >&6; }
+if test "$cross_compiling" != yes; then
+ { { ac_try="$ac_link"
+case "(($ac_try" in
+ *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+ *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+ (eval "$ac_link") 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; }
+ if { ac_try='./conftest$ac_cv_exeext'
+ { { case "(($ac_try" in
+ *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+ *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+ (eval "$ac_try") 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; }; }; then
+ cross_compiling=no
+ else
+ if test "$cross_compiling" = maybe; then
+ cross_compiling=yes
+ else
+ { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error "cannot run C compiled programs.
+If you meant to cross compile, use \`--host'.
+See \`config.log' for more details." "$LINENO" 5; }
+ fi
+ fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $cross_compiling" >&5
+$as_echo "$cross_compiling" >&6; }
+
+rm -f conftest.$ac_ext conftest$ac_cv_exeext conftest.out
+ac_clean_files=$ac_clean_files_save
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for suffix of object files" >&5
+$as_echo_n "checking for suffix of object files... " >&6; }
+if test "${ac_cv_objext+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+int
+main ()
+{
+
+ ;
+ return 0;
+}
+_ACEOF
+rm -f conftest.o conftest.obj
+if { { ac_try="$ac_compile"
+case "(($ac_try" in
+ *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+ *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+ (eval "$ac_compile") 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; }; then :
+ for ac_file in conftest.o conftest.obj conftest.*; do
+ test -f "$ac_file" || continue;
+ case $ac_file in
+ *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM ) ;;
+ *) ac_cv_objext=`expr "$ac_file" : '.*\.\(.*\)'`
+ break;;
+ esac
+done
+else
+ $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+{ { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error "cannot compute suffix of object files: cannot compile
+See \`config.log' for more details." "$LINENO" 5; }
+fi
+rm -f conftest.$ac_cv_objext conftest.$ac_ext
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_objext" >&5
+$as_echo "$ac_cv_objext" >&6; }
+OBJEXT=$ac_cv_objext
+ac_objext=$OBJEXT
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether we are using the GNU C compiler" >&5
+$as_echo_n "checking whether we are using the GNU C compiler... " >&6; }
+if test "${ac_cv_c_compiler_gnu+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+int
+main ()
+{
+#ifndef __GNUC__
+ choke me
+#endif
+
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+ ac_compiler_gnu=yes
+else
+ ac_compiler_gnu=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+ac_cv_c_compiler_gnu=$ac_compiler_gnu
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_compiler_gnu" >&5
+$as_echo "$ac_cv_c_compiler_gnu" >&6; }
+if test $ac_compiler_gnu = yes; then
+ GCC=yes
+else
+ GCC=
+fi
+ac_test_CFLAGS=${CFLAGS+set}
+ac_save_CFLAGS=$CFLAGS
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC accepts -g" >&5
+$as_echo_n "checking whether $CC accepts -g... " >&6; }
+if test "${ac_cv_prog_cc_g+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ ac_save_c_werror_flag=$ac_c_werror_flag
+ ac_c_werror_flag=yes
+ ac_cv_prog_cc_g=no
+ CFLAGS="-g"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+int
+main ()
+{
+
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+ ac_cv_prog_cc_g=yes
+else
+ CFLAGS=""
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+int
+main ()
+{
+
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+else
+ ac_c_werror_flag=$ac_save_c_werror_flag
+ CFLAGS="-g"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+int
+main ()
+{
+
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+ ac_cv_prog_cc_g=yes
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+ ac_c_werror_flag=$ac_save_c_werror_flag
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_g" >&5
+$as_echo "$ac_cv_prog_cc_g" >&6; }
+if test "$ac_test_CFLAGS" = set; then
+ CFLAGS=$ac_save_CFLAGS
+elif test $ac_cv_prog_cc_g = yes; then
+ if test "$GCC" = yes; then
+ CFLAGS="-g -O2"
+ else
+ CFLAGS="-g"
+ fi
+else
+ if test "$GCC" = yes; then
+ CFLAGS="-O2"
+ else
+ CFLAGS=
+ fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $CC option to accept ISO C89" >&5
+$as_echo_n "checking for $CC option to accept ISO C89... " >&6; }
+if test "${ac_cv_prog_cc_c89+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ ac_cv_prog_cc_c89=no
+ac_save_CC=$CC
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+#include <stdarg.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+/* Most of the following tests are stolen from RCS 5.7's src/conf.sh. */
+struct buf { int x; };
+FILE * (*rcsopen) (struct buf *, struct stat *, int);
+static char *e (p, i)
+ char **p;
+ int i;
+{
+ return p[i];
+}
+static char *f (char * (*g) (char **, int), char **p, ...)
+{
+ char *s;
+ va_list v;
+ va_start (v,p);
+ s = g (p, va_arg (v,int));
+ va_end (v);
+ return s;
+}
+
+/* OSF 4.0 Compaq cc is some sort of almost-ANSI by default. It has
+ function prototypes and stuff, but not '\xHH' hex character constants.
+ These don't provoke an error unfortunately, instead are silently treated
+ as 'x'. The following induces an error, until -std is added to get
+ proper ANSI mode. Curiously '\x00'!='x' always comes out true, for an
+ array size at least. It's necessary to write '\x00'==0 to get something
+ that's true only with -std. */
+int osf4_cc_array ['\x00' == 0 ? 1 : -1];
+
+/* IBM C 6 for AIX is almost-ANSI by default, but it replaces macro parameters
+ inside strings and character constants. */
+#define FOO(x) 'x'
+int xlc6_cc_array[FOO(a) == 'x' ? 1 : -1];
+
+int test (int i, double x);
+struct s1 {int (*f) (int a);};
+struct s2 {int (*f) (double a);};
+int pairnames (int, char **, FILE *(*)(struct buf *, struct stat *, int), int, int);
+int argc;
+char **argv;
+int
+main ()
+{
+return f (e, argv, 0) != argv[0] || f (e, argv, 1) != argv[1];
+ ;
+ return 0;
+}
+_ACEOF
+for ac_arg in '' -qlanglvl=extc89 -qlanglvl=ansi -std \
+ -Ae "-Aa -D_HPUX_SOURCE" "-Xc -D__EXTENSIONS__"
+do
+ CC="$ac_save_CC $ac_arg"
+ if ac_fn_c_try_compile "$LINENO"; then :
+ ac_cv_prog_cc_c89=$ac_arg
+fi
+rm -f core conftest.err conftest.$ac_objext
+ test "x$ac_cv_prog_cc_c89" != "xno" && break
+done
+rm -f conftest.$ac_ext
+CC=$ac_save_CC
+
+fi
+# AC_CACHE_VAL
+case "x$ac_cv_prog_cc_c89" in
+ x)
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: none needed" >&5
+$as_echo "none needed" >&6; } ;;
+ xno)
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5
+$as_echo "unsupported" >&6; } ;;
+ *)
+ CC="$CC $ac_cv_prog_cc_c89"
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c89" >&5
+$as_echo "$ac_cv_prog_cc_c89" >&6; } ;;
+esac
+if test "x$ac_cv_prog_cc_c89" != xno; then :
+
+fi
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+DEPDIR="${am__leading_dot}deps"
+
+ac_config_commands="$ac_config_commands depfiles"
+
+
+am_make=${MAKE-make}
+cat > confinc << 'END'
+am__doit:
+ @echo this is the am__doit target
+.PHONY: am__doit
+END
+# If we don't find an include directive, just comment out the code.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for style of include used by $am_make" >&5
+$as_echo_n "checking for style of include used by $am_make... " >&6; }
+am__include="#"
+am__quote=
+_am_result=none
+# First try GNU make style include.
+echo "include confinc" > confmf
+# Ignore all kinds of additional output from `make'.
+case `$am_make -s -f confmf 2> /dev/null` in #(
+*the\ am__doit\ target*)
+ am__include=include
+ am__quote=
+ _am_result=GNU
+ ;;
+esac
+# Now try BSD make style include.
+if test "$am__include" = "#"; then
+ echo '.include "confinc"' > confmf
+ case `$am_make -s -f confmf 2> /dev/null` in #(
+ *the\ am__doit\ target*)
+ am__include=.include
+ am__quote="\""
+ _am_result=BSD
+ ;;
+ esac
+fi
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $_am_result" >&5
+$as_echo "$_am_result" >&6; }
+rm -f confinc confmf
+
+# Check whether --enable-dependency-tracking was given.
+if test "${enable_dependency_tracking+set}" = set; then :
+ enableval=$enable_dependency_tracking;
+fi
+
+if test "x$enable_dependency_tracking" != xno; then
+ am_depcomp="$ac_aux_dir/depcomp"
+ AMDEPBACKSLASH='\'
+fi
+ if test "x$enable_dependency_tracking" != xno; then
+ AMDEP_TRUE=
+ AMDEP_FALSE='#'
+else
+ AMDEP_TRUE='#'
+ AMDEP_FALSE=
+fi
+
+
+
+depcc="$CC" am_compiler_list=
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking dependency style of $depcc" >&5
+$as_echo_n "checking dependency style of $depcc... " >&6; }
+if test "${am_cv_CC_dependencies_compiler_type+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -z "$AMDEP_TRUE" && test -f "$am_depcomp"; then
+ # We make a subdir and do the tests there. Otherwise we can end up
+ # making bogus files that we don't know about and never remove. For
+ # instance it was reported that on HP-UX the gcc test will end up
+ # making a dummy file named `D' -- because `-MD' means `put the output
+ # in D'.
+ mkdir conftest.dir
+ # Copy depcomp to subdir because otherwise we won't find it if we're
+ # using a relative directory.
+ cp "$am_depcomp" conftest.dir
+ cd conftest.dir
+ # We will build objects and dependencies in a subdirectory because
+ # it helps to detect inapplicable dependency modes. For instance
+ # both Tru64's cc and ICC support -MD to output dependencies as a
+ # side effect of compilation, but ICC will put the dependencies in
+ # the current directory while Tru64 will put them in the object
+ # directory.
+ mkdir sub
+
+ am_cv_CC_dependencies_compiler_type=none
+ if test "$am_compiler_list" = ""; then
+ am_compiler_list=`sed -n 's/^#*\([a-zA-Z0-9]*\))$/\1/p' < ./depcomp`
+ fi
+ am__universal=false
+ case " $depcc " in #(
+ *\ -arch\ *\ -arch\ *) am__universal=true ;;
+ esac
+
+ for depmode in $am_compiler_list; do
+ # Setup a source with many dependencies, because some compilers
+ # like to wrap large dependency lists on column 80 (with \), and
+ # we should not choose a depcomp mode which is confused by this.
+ #
+ # We need to recreate these files for each test, as the compiler may
+ # overwrite some of them when testing with obscure command lines.
+ # This happens at least with the AIX C compiler.
+ : > sub/conftest.c
+ for i in 1 2 3 4 5 6; do
+ echo '#include "conftst'$i'.h"' >> sub/conftest.c
+ # Using `: > sub/conftst$i.h' creates only sub/conftst1.h with
+ # Solaris 8's {/usr,}/bin/sh.
+ touch sub/conftst$i.h
+ done
+ echo "${am__include} ${am__quote}sub/conftest.Po${am__quote}" > confmf
+
+ # We check with `-c' and `-o' for the sake of the "dashmstdout"
+ # mode. It turns out that the SunPro C++ compiler does not properly
+ # handle `-M -o', and we need to detect this. Also, some Intel
+ # versions had trouble with output in subdirs
+ am__obj=sub/conftest.${OBJEXT-o}
+ am__minus_obj="-o $am__obj"
+ case $depmode in
+ gcc)
+ # This depmode causes a compiler race in universal mode.
+ test "$am__universal" = false || continue
+ ;;
+ nosideeffect)
+ # after this tag, mechanisms are not by side-effect, so they'll
+ # only be used when explicitly requested
+ if test "x$enable_dependency_tracking" = xyes; then
+ continue
+ else
+ break
+ fi
+ ;;
+ msvisualcpp | msvcmsys)
+ # This compiler won't grok `-c -o', but also, the minuso test has
+ # not run yet. These depmodes are late enough in the game, and
+ # so weak that their functioning should not be impacted.
+ am__obj=conftest.${OBJEXT-o}
+ am__minus_obj=
+ ;;
+ none) break ;;
+ esac
+ if depmode=$depmode \
+ source=sub/conftest.c object=$am__obj \
+ depfile=sub/conftest.Po tmpdepfile=sub/conftest.TPo \
+ $SHELL ./depcomp $depcc -c $am__minus_obj sub/conftest.c \
+ >/dev/null 2>conftest.err &&
+ grep sub/conftst1.h sub/conftest.Po > /dev/null 2>&1 &&
+ grep sub/conftst6.h sub/conftest.Po > /dev/null 2>&1 &&
+ grep $am__obj sub/conftest.Po > /dev/null 2>&1 &&
+ ${MAKE-make} -s -f confmf > /dev/null 2>&1; then
+ # icc doesn't choke on unknown options, it will just issue warnings
+ # or remarks (even with -Werror). So we grep stderr for any message
+ # that says an option was ignored or not supported.
+ # When given -MP, icc 7.0 and 7.1 complain thusly:
+ # icc: Command line warning: ignoring option '-M'; no argument required
+ # The diagnosis changed in icc 8.0:
+ # icc: Command line remark: option '-MP' not supported
+ if (grep 'ignoring option' conftest.err ||
+ grep 'not supported' conftest.err) >/dev/null 2>&1; then :; else
+ am_cv_CC_dependencies_compiler_type=$depmode
+ break
+ fi
+ fi
+ done
+
+ cd ..
+ rm -rf conftest.dir
+else
+ am_cv_CC_dependencies_compiler_type=none
+fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $am_cv_CC_dependencies_compiler_type" >&5
+$as_echo "$am_cv_CC_dependencies_compiler_type" >&6; }
+CCDEPMODE=depmode=$am_cv_CC_dependencies_compiler_type
+
+ if
+ test "x$enable_dependency_tracking" != xno \
+ && test "$am_cv_CC_dependencies_compiler_type" = gcc3; then
+ am__fastdepCC_TRUE=
+ am__fastdepCC_FALSE='#'
+else
+ am__fastdepCC_TRUE='#'
+ am__fastdepCC_FALSE=
+fi
+
+
+# Make sure we can run config.sub.
+$SHELL "$ac_aux_dir/config.sub" sun4 >/dev/null 2>&1 ||
+ as_fn_error "cannot run $SHELL $ac_aux_dir/config.sub" "$LINENO" 5
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking build system type" >&5
+$as_echo_n "checking build system type... " >&6; }
+if test "${ac_cv_build+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ ac_build_alias=$build_alias
+test "x$ac_build_alias" = x &&
+ ac_build_alias=`$SHELL "$ac_aux_dir/config.guess"`
+test "x$ac_build_alias" = x &&
+ as_fn_error "cannot guess build type; you must specify one" "$LINENO" 5
+ac_cv_build=`$SHELL "$ac_aux_dir/config.sub" $ac_build_alias` ||
+ as_fn_error "$SHELL $ac_aux_dir/config.sub $ac_build_alias failed" "$LINENO" 5
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_build" >&5
+$as_echo "$ac_cv_build" >&6; }
+case $ac_cv_build in
+*-*-*) ;;
+*) as_fn_error "invalid value of canonical build" "$LINENO" 5;;
+esac
+build=$ac_cv_build
+ac_save_IFS=$IFS; IFS='-'
+set x $ac_cv_build
+shift
+build_cpu=$1
+build_vendor=$2
+shift; shift
+# Remember, the first character of IFS is used to create $*,
+# except with old shells:
+build_os=$*
+IFS=$ac_save_IFS
+case $build_os in *\ *) build_os=`echo "$build_os" | sed 's/ /-/g'`;; esac
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking host system type" >&5
+$as_echo_n "checking host system type... " >&6; }
+if test "${ac_cv_host+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test "x$host_alias" = x; then
+ ac_cv_host=$ac_cv_build
+else
+ ac_cv_host=`$SHELL "$ac_aux_dir/config.sub" $host_alias` ||
+ as_fn_error "$SHELL $ac_aux_dir/config.sub $host_alias failed" "$LINENO" 5
+fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_host" >&5
+$as_echo "$ac_cv_host" >&6; }
+case $ac_cv_host in
+*-*-*) ;;
+*) as_fn_error "invalid value of canonical host" "$LINENO" 5;;
+esac
+host=$ac_cv_host
+ac_save_IFS=$IFS; IFS='-'
+set x $ac_cv_host
+shift
+host_cpu=$1
+host_vendor=$2
+shift; shift
+# Remember, the first character of IFS is used to create $*,
+# except with old shells:
+host_os=$*
+IFS=$ac_save_IFS
+case $host_os in *\ *) host_os=`echo "$host_os" | sed 's/ /-/g'`;; esac
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for a sed that does not truncate output" >&5
+$as_echo_n "checking for a sed that does not truncate output... " >&6; }
+if test "${ac_cv_path_SED+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ ac_script=s/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb/
+ for ac_i in 1 2 3 4 5 6 7; do
+ ac_script="$ac_script$as_nl$ac_script"
+ done
+ echo "$ac_script" 2>/dev/null | sed 99q >conftest.sed
+ { ac_script=; unset ac_script;}
+ if test -z "$SED"; then
+ ac_path_SED_found=false
+ # Loop through the user's path and test for each of PROGNAME-LIST
+ as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_prog in sed gsed; do
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ ac_path_SED="$as_dir/$ac_prog$ac_exec_ext"
+ { test -f "$ac_path_SED" && $as_test_x "$ac_path_SED"; } || continue
+# Check for GNU ac_path_SED and select it if it is found.
+ # Check for GNU $ac_path_SED
+case `"$ac_path_SED" --version 2>&1` in
+*GNU*)
+ ac_cv_path_SED="$ac_path_SED" ac_path_SED_found=:;;
+*)
+ ac_count=0
+ $as_echo_n 0123456789 >"conftest.in"
+ while :
+ do
+ cat "conftest.in" "conftest.in" >"conftest.tmp"
+ mv "conftest.tmp" "conftest.in"
+ cp "conftest.in" "conftest.nl"
+ $as_echo '' >> "conftest.nl"
+ "$ac_path_SED" -f conftest.sed < "conftest.nl" >"conftest.out" 2>/dev/null || break
+ diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break
+ as_fn_arith $ac_count + 1 && ac_count=$as_val
+ if test $ac_count -gt ${ac_path_SED_max-0}; then
+ # Best one so far, save it but keep looking for a better one
+ ac_cv_path_SED="$ac_path_SED"
+ ac_path_SED_max=$ac_count
+ fi
+ # 10*(2^10) chars as input seems more than enough
+ test $ac_count -gt 10 && break
+ done
+ rm -f conftest.in conftest.tmp conftest.nl conftest.out;;
+esac
+
+ $ac_path_SED_found && break 3
+ done
+ done
+ done
+IFS=$as_save_IFS
+ if test -z "$ac_cv_path_SED"; then
+ as_fn_error "no acceptable sed could be found in \$PATH" "$LINENO" 5
+ fi
+else
+ ac_cv_path_SED=$SED
+fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_SED" >&5
+$as_echo "$ac_cv_path_SED" >&6; }
+ SED="$ac_cv_path_SED"
+ rm -f conftest.sed
+
+test -z "$SED" && SED=sed
+Xsed="$SED -e 1s/^X//"
+
+
+
+
+
+
+
+
+
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for grep that handles long lines and -e" >&5
+$as_echo_n "checking for grep that handles long lines and -e... " >&6; }
+if test "${ac_cv_path_GREP+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -z "$GREP"; then
+ ac_path_GREP_found=false
+ # Loop through the user's path and test for each of PROGNAME-LIST
+ as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_prog in grep ggrep; do
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ ac_path_GREP="$as_dir/$ac_prog$ac_exec_ext"
+ { test -f "$ac_path_GREP" && $as_test_x "$ac_path_GREP"; } || continue
+# Check for GNU ac_path_GREP and select it if it is found.
+ # Check for GNU $ac_path_GREP
+case `"$ac_path_GREP" --version 2>&1` in
+*GNU*)
+ ac_cv_path_GREP="$ac_path_GREP" ac_path_GREP_found=:;;
+*)
+ ac_count=0
+ $as_echo_n 0123456789 >"conftest.in"
+ while :
+ do
+ cat "conftest.in" "conftest.in" >"conftest.tmp"
+ mv "conftest.tmp" "conftest.in"
+ cp "conftest.in" "conftest.nl"
+ $as_echo 'GREP' >> "conftest.nl"
+ "$ac_path_GREP" -e 'GREP$' -e '-(cannot match)-' < "conftest.nl" >"conftest.out" 2>/dev/null || break
+ diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break
+ as_fn_arith $ac_count + 1 && ac_count=$as_val
+ if test $ac_count -gt ${ac_path_GREP_max-0}; then
+ # Best one so far, save it but keep looking for a better one
+ ac_cv_path_GREP="$ac_path_GREP"
+ ac_path_GREP_max=$ac_count
+ fi
+ # 10*(2^10) chars as input seems more than enough
+ test $ac_count -gt 10 && break
+ done
+ rm -f conftest.in conftest.tmp conftest.nl conftest.out;;
+esac
+
+ $ac_path_GREP_found && break 3
+ done
+ done
+ done
+IFS=$as_save_IFS
+ if test -z "$ac_cv_path_GREP"; then
+ as_fn_error "no acceptable grep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5
+ fi
+else
+ ac_cv_path_GREP=$GREP
+fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_GREP" >&5
+$as_echo "$ac_cv_path_GREP" >&6; }
+ GREP="$ac_cv_path_GREP"
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for egrep" >&5
+$as_echo_n "checking for egrep... " >&6; }
+if test "${ac_cv_path_EGREP+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if echo a | $GREP -E '(a|b)' >/dev/null 2>&1
+ then ac_cv_path_EGREP="$GREP -E"
+ else
+ if test -z "$EGREP"; then
+ ac_path_EGREP_found=false
+ # Loop through the user's path and test for each of PROGNAME-LIST
+ as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_prog in egrep; do
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ ac_path_EGREP="$as_dir/$ac_prog$ac_exec_ext"
+ { test -f "$ac_path_EGREP" && $as_test_x "$ac_path_EGREP"; } || continue
+# Check for GNU ac_path_EGREP and select it if it is found.
+ # Check for GNU $ac_path_EGREP
+case `"$ac_path_EGREP" --version 2>&1` in
+*GNU*)
+ ac_cv_path_EGREP="$ac_path_EGREP" ac_path_EGREP_found=:;;
+*)
+ ac_count=0
+ $as_echo_n 0123456789 >"conftest.in"
+ while :
+ do
+ cat "conftest.in" "conftest.in" >"conftest.tmp"
+ mv "conftest.tmp" "conftest.in"
+ cp "conftest.in" "conftest.nl"
+ $as_echo 'EGREP' >> "conftest.nl"
+ "$ac_path_EGREP" 'EGREP$' < "conftest.nl" >"conftest.out" 2>/dev/null || break
+ diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break
+ as_fn_arith $ac_count + 1 && ac_count=$as_val
+ if test $ac_count -gt ${ac_path_EGREP_max-0}; then
+ # Best one so far, save it but keep looking for a better one
+ ac_cv_path_EGREP="$ac_path_EGREP"
+ ac_path_EGREP_max=$ac_count
+ fi
+ # 10*(2^10) chars as input seems more than enough
+ test $ac_count -gt 10 && break
+ done
+ rm -f conftest.in conftest.tmp conftest.nl conftest.out;;
+esac
+
+ $ac_path_EGREP_found && break 3
+ done
+ done
+ done
+IFS=$as_save_IFS
+ if test -z "$ac_cv_path_EGREP"; then
+ as_fn_error "no acceptable egrep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5
+ fi
+else
+ ac_cv_path_EGREP=$EGREP
+fi
+
+ fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_EGREP" >&5
+$as_echo "$ac_cv_path_EGREP" >&6; }
+ EGREP="$ac_cv_path_EGREP"
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for fgrep" >&5
+$as_echo_n "checking for fgrep... " >&6; }
+if test "${ac_cv_path_FGREP+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if echo 'ab*c' | $GREP -F 'ab*c' >/dev/null 2>&1
+ then ac_cv_path_FGREP="$GREP -F"
+ else
+ if test -z "$FGREP"; then
+ ac_path_FGREP_found=false
+ # Loop through the user's path and test for each of PROGNAME-LIST
+ as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_prog in fgrep; do
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ ac_path_FGREP="$as_dir/$ac_prog$ac_exec_ext"
+ { test -f "$ac_path_FGREP" && $as_test_x "$ac_path_FGREP"; } || continue
+# Check for GNU ac_path_FGREP and select it if it is found.
+ # Check for GNU $ac_path_FGREP
+case `"$ac_path_FGREP" --version 2>&1` in
+*GNU*)
+ ac_cv_path_FGREP="$ac_path_FGREP" ac_path_FGREP_found=:;;
+*)
+ ac_count=0
+ $as_echo_n 0123456789 >"conftest.in"
+ while :
+ do
+ cat "conftest.in" "conftest.in" >"conftest.tmp"
+ mv "conftest.tmp" "conftest.in"
+ cp "conftest.in" "conftest.nl"
+ $as_echo 'FGREP' >> "conftest.nl"
+ "$ac_path_FGREP" FGREP < "conftest.nl" >"conftest.out" 2>/dev/null || break
+ diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break
+ as_fn_arith $ac_count + 1 && ac_count=$as_val
+ if test $ac_count -gt ${ac_path_FGREP_max-0}; then
+ # Best one so far, save it but keep looking for a better one
+ ac_cv_path_FGREP="$ac_path_FGREP"
+ ac_path_FGREP_max=$ac_count
+ fi
+ # 10*(2^10) chars as input seems more than enough
+ test $ac_count -gt 10 && break
+ done
+ rm -f conftest.in conftest.tmp conftest.nl conftest.out;;
+esac
+
+ $ac_path_FGREP_found && break 3
+ done
+ done
+ done
+IFS=$as_save_IFS
+ if test -z "$ac_cv_path_FGREP"; then
+ as_fn_error "no acceptable fgrep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5
+ fi
+else
+ ac_cv_path_FGREP=$FGREP
+fi
+
+ fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_FGREP" >&5
+$as_echo "$ac_cv_path_FGREP" >&6; }
+ FGREP="$ac_cv_path_FGREP"
+
+
+test -z "$GREP" && GREP=grep
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+# Check whether --with-gnu-ld was given.
+if test "${with_gnu_ld+set}" = set; then :
+ withval=$with_gnu_ld; test "$withval" = no || with_gnu_ld=yes
+else
+ with_gnu_ld=no
+fi
+
+ac_prog=ld
+if test "$GCC" = yes; then
+ # Check if gcc -print-prog-name=ld gives a path.
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for ld used by $CC" >&5
+$as_echo_n "checking for ld used by $CC... " >&6; }
+ case $host in
+ *-*-mingw*)
+ # gcc leaves a trailing carriage return which upsets mingw
+ ac_prog=`($CC -print-prog-name=ld) 2>&5 | tr -d '\015'` ;;
+ *)
+ ac_prog=`($CC -print-prog-name=ld) 2>&5` ;;
+ esac
+ case $ac_prog in
+ # Accept absolute paths.
+ [\\/]* | ?:[\\/]*)
+ re_direlt='/[^/][^/]*/\.\./'
+ # Canonicalize the pathname of ld
+ ac_prog=`$ECHO "$ac_prog"| $SED 's%\\\\%/%g'`
+ while $ECHO "$ac_prog" | $GREP "$re_direlt" > /dev/null 2>&1; do
+ ac_prog=`$ECHO $ac_prog| $SED "s%$re_direlt%/%"`
+ done
+ test -z "$LD" && LD="$ac_prog"
+ ;;
+ "")
+ # If it fails, then pretend we aren't using GCC.
+ ac_prog=ld
+ ;;
+ *)
+ # If it is relative, then search for the first ld in PATH.
+ with_gnu_ld=unknown
+ ;;
+ esac
+elif test "$with_gnu_ld" = yes; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for GNU ld" >&5
+$as_echo_n "checking for GNU ld... " >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for non-GNU ld" >&5
+$as_echo_n "checking for non-GNU ld... " >&6; }
+fi
+if test "${lt_cv_path_LD+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -z "$LD"; then
+ lt_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
+ for ac_dir in $PATH; do
+ IFS="$lt_save_ifs"
+ test -z "$ac_dir" && ac_dir=.
+ if test -f "$ac_dir/$ac_prog" || test -f "$ac_dir/$ac_prog$ac_exeext"; then
+ lt_cv_path_LD="$ac_dir/$ac_prog"
+ # Check to see if the program is GNU ld. I'd rather use --version,
+ # but apparently some variants of GNU ld only accept -v.
+ # Break only if it was the GNU/non-GNU ld that we prefer.
+ case `"$lt_cv_path_LD" -v 2>&1 </dev/null` in
+ *GNU* | *'with BFD'*)
+ test "$with_gnu_ld" != no && break
+ ;;
+ *)
+ test "$with_gnu_ld" != yes && break
+ ;;
+ esac
+ fi
+ done
+ IFS="$lt_save_ifs"
+else
+ lt_cv_path_LD="$LD" # Let the user override the test with a path.
+fi
+fi
+
+LD="$lt_cv_path_LD"
+if test -n "$LD"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $LD" >&5
+$as_echo "$LD" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+test -z "$LD" && as_fn_error "no acceptable ld found in \$PATH" "$LINENO" 5
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if the linker ($LD) is GNU ld" >&5
+$as_echo_n "checking if the linker ($LD) is GNU ld... " >&6; }
+if test "${lt_cv_prog_gnu_ld+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ # I'd rather use --version here, but apparently some GNU lds only accept -v.
+case `$LD -v 2>&1 </dev/null` in
+*GNU* | *'with BFD'*)
+ lt_cv_prog_gnu_ld=yes
+ ;;
+*)
+ lt_cv_prog_gnu_ld=no
+ ;;
+esac
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_prog_gnu_ld" >&5
+$as_echo "$lt_cv_prog_gnu_ld" >&6; }
+with_gnu_ld=$lt_cv_prog_gnu_ld
+
+
+
+
+
+
+
+
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking how to run the C preprocessor" >&5
+$as_echo_n "checking how to run the C preprocessor... " >&6; }
+# On Suns, sometimes $CPP names a directory.
+if test -n "$CPP" && test -d "$CPP"; then
+ CPP=
+fi
+if test -z "$CPP"; then
+ if test "${ac_cv_prog_CPP+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ # Double quotes because CPP needs to be expanded
+ for CPP in "$CC -E" "$CC -E -traditional-cpp" "/lib/cpp"
+ do
+ ac_preproc_ok=false
+for ac_c_preproc_warn_flag in '' yes
+do
+ # Use a header file that comes with gcc, so configuring glibc
+ # with a fresh cross-compiler works.
+ # Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+ # <limits.h> exists even on freestanding compilers.
+ # On the NeXT, cc -E runs the code through the compiler's parser,
+ # not just through cpp. "Syntax error" is here to catch this case.
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+ Syntax error
+_ACEOF
+if ac_fn_c_try_cpp "$LINENO"; then :
+
+else
+ # Broken: fails on valid input.
+continue
+fi
+rm -f conftest.err conftest.$ac_ext
+
+ # OK, works on sane cases. Now check whether nonexistent headers
+ # can be detected and how.
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+#include <ac_nonexistent.h>
+_ACEOF
+if ac_fn_c_try_cpp "$LINENO"; then :
+ # Broken: success on invalid input.
+continue
+else
+ # Passes both tests.
+ac_preproc_ok=:
+break
+fi
+rm -f conftest.err conftest.$ac_ext
+
+done
+# Because of `break', _AC_PREPROC_IFELSE's cleaning code was skipped.
+rm -f conftest.err conftest.$ac_ext
+if $ac_preproc_ok; then :
+ break
+fi
+
+ done
+ ac_cv_prog_CPP=$CPP
+
+fi
+ CPP=$ac_cv_prog_CPP
+else
+ ac_cv_prog_CPP=$CPP
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $CPP" >&5
+$as_echo "$CPP" >&6; }
+ac_preproc_ok=false
+for ac_c_preproc_warn_flag in '' yes
+do
+ # Use a header file that comes with gcc, so configuring glibc
+ # with a fresh cross-compiler works.
+ # Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+ # <limits.h> exists even on freestanding compilers.
+ # On the NeXT, cc -E runs the code through the compiler's parser,
+ # not just through cpp. "Syntax error" is here to catch this case.
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+ Syntax error
+_ACEOF
+if ac_fn_c_try_cpp "$LINENO"; then :
+
+else
+ # Broken: fails on valid input.
+continue
+fi
+rm -f conftest.err conftest.$ac_ext
+
+ # OK, works on sane cases. Now check whether nonexistent headers
+ # can be detected and how.
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+#include <ac_nonexistent.h>
+_ACEOF
+if ac_fn_c_try_cpp "$LINENO"; then :
+ # Broken: success on invalid input.
+continue
+else
+ # Passes both tests.
+ac_preproc_ok=:
+break
+fi
+rm -f conftest.err conftest.$ac_ext
+
+done
+# Because of `break', _AC_PREPROC_IFELSE's cleaning code was skipped.
+rm -f conftest.err conftest.$ac_ext
+if $ac_preproc_ok; then :
+
+else
+ { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error "C preprocessor \"$CPP\" fails sanity check
+See \`config.log' for more details." "$LINENO" 5; }
+fi
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+if test -n "$ac_tool_prefix"; then
+ # Extract the first word of "${ac_tool_prefix}sed", so it can be a program name with args.
+set dummy ${ac_tool_prefix}sed; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_SED+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$SED"; then
+ ac_cv_prog_SED="$SED" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_SED="${ac_tool_prefix}sed"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+SED=$ac_cv_prog_SED
+if test -n "$SED"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $SED" >&5
+$as_echo "$SED" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_SED"; then
+ ac_ct_SED=$SED
+ # Extract the first word of "sed", so it can be a program name with args.
+set dummy sed; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_SED+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$ac_ct_SED"; then
+ ac_cv_prog_ac_ct_SED="$ac_ct_SED" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_ac_ct_SED="sed"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_SED=$ac_cv_prog_ac_ct_SED
+if test -n "$ac_ct_SED"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_SED" >&5
+$as_echo "$ac_ct_SED" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+ if test "x$ac_ct_SED" = x; then
+ SED=":"
+ else
+ case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+ SED=$ac_ct_SED
+ fi
+else
+ SED="$ac_cv_prog_SED"
+fi
+
+enable_win32_dll=yes
+
+case $host in
+*-*-cygwin* | *-*-mingw* | *-*-pw32* | *-cegcc*)
+ if test -n "$ac_tool_prefix"; then
+ # Extract the first word of "${ac_tool_prefix}as", so it can be a program name with args.
+set dummy ${ac_tool_prefix}as; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_AS+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$AS"; then
+ ac_cv_prog_AS="$AS" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_AS="${ac_tool_prefix}as"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+AS=$ac_cv_prog_AS
+if test -n "$AS"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $AS" >&5
+$as_echo "$AS" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_AS"; then
+ ac_ct_AS=$AS
+ # Extract the first word of "as", so it can be a program name with args.
+set dummy as; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_AS+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$ac_ct_AS"; then
+ ac_cv_prog_ac_ct_AS="$ac_ct_AS" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_ac_ct_AS="as"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_AS=$ac_cv_prog_ac_ct_AS
+if test -n "$ac_ct_AS"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_AS" >&5
+$as_echo "$ac_ct_AS" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+ if test "x$ac_ct_AS" = x; then
+ AS="false"
+ else
+ case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+ AS=$ac_ct_AS
+ fi
+else
+ AS="$ac_cv_prog_AS"
+fi
+
+ if test -n "$ac_tool_prefix"; then
+ # Extract the first word of "${ac_tool_prefix}dlltool", so it can be a program name with args.
+set dummy ${ac_tool_prefix}dlltool; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_DLLTOOL+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$DLLTOOL"; then
+ ac_cv_prog_DLLTOOL="$DLLTOOL" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_DLLTOOL="${ac_tool_prefix}dlltool"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+DLLTOOL=$ac_cv_prog_DLLTOOL
+if test -n "$DLLTOOL"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $DLLTOOL" >&5
+$as_echo "$DLLTOOL" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_DLLTOOL"; then
+ ac_ct_DLLTOOL=$DLLTOOL
+ # Extract the first word of "dlltool", so it can be a program name with args.
+set dummy dlltool; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_DLLTOOL+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$ac_ct_DLLTOOL"; then
+ ac_cv_prog_ac_ct_DLLTOOL="$ac_ct_DLLTOOL" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_ac_ct_DLLTOOL="dlltool"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_DLLTOOL=$ac_cv_prog_ac_ct_DLLTOOL
+if test -n "$ac_ct_DLLTOOL"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_DLLTOOL" >&5
+$as_echo "$ac_ct_DLLTOOL" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+ if test "x$ac_ct_DLLTOOL" = x; then
+ DLLTOOL="false"
+ else
+ case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+ DLLTOOL=$ac_ct_DLLTOOL
+ fi
+else
+ DLLTOOL="$ac_cv_prog_DLLTOOL"
+fi
+
+ if test -n "$ac_tool_prefix"; then
+ # Extract the first word of "${ac_tool_prefix}objdump", so it can be a program name with args.
+set dummy ${ac_tool_prefix}objdump; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_OBJDUMP+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$OBJDUMP"; then
+ ac_cv_prog_OBJDUMP="$OBJDUMP" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_OBJDUMP="${ac_tool_prefix}objdump"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+OBJDUMP=$ac_cv_prog_OBJDUMP
+if test -n "$OBJDUMP"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $OBJDUMP" >&5
+$as_echo "$OBJDUMP" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_OBJDUMP"; then
+ ac_ct_OBJDUMP=$OBJDUMP
+ # Extract the first word of "objdump", so it can be a program name with args.
+set dummy objdump; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_OBJDUMP+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$ac_ct_OBJDUMP"; then
+ ac_cv_prog_ac_ct_OBJDUMP="$ac_ct_OBJDUMP" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_ac_ct_OBJDUMP="objdump"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_OBJDUMP=$ac_cv_prog_ac_ct_OBJDUMP
+if test -n "$ac_ct_OBJDUMP"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_OBJDUMP" >&5
+$as_echo "$ac_ct_OBJDUMP" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+ if test "x$ac_ct_OBJDUMP" = x; then
+ OBJDUMP="false"
+ else
+ case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+ OBJDUMP=$ac_ct_OBJDUMP
+ fi
+else
+ OBJDUMP="$ac_cv_prog_OBJDUMP"
+fi
+
+ ;;
+esac
+
+test -z "$AS" && AS=as
+
+
+
+
+
+test -z "$DLLTOOL" && DLLTOOL=dlltool
+
+
+
+
+
+test -z "$OBJDUMP" && OBJDUMP=objdump
+
+
+
+
+
+
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether ln -s works" >&5
+$as_echo_n "checking whether ln -s works... " >&6; }
+LN_S=$as_ln_s
+if test "$LN_S" = "ln -s"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no, using $LN_S" >&5
+$as_echo "no, using $LN_S" >&6; }
+fi
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether ${MAKE-make} sets \$(MAKE)" >&5
+$as_echo_n "checking whether ${MAKE-make} sets \$(MAKE)... " >&6; }
+set x ${MAKE-make}
+ac_make=`$as_echo "$2" | sed 's/+/p/g; s/[^a-zA-Z0-9_]/_/g'`
+if { as_var=ac_cv_prog_make_${ac_make}_set; eval "test \"\${$as_var+set}\" = set"; }; then :
+ $as_echo_n "(cached) " >&6
+else
+ cat >conftest.make <<\_ACEOF
+SHELL = /bin/sh
+all:
+ @echo '@@@%%%=$(MAKE)=@@@%%%'
+_ACEOF
+# GNU make sometimes prints "make[1]: Entering...", which would confuse us.
+case `${MAKE-make} -f conftest.make 2>/dev/null` in
+ *@@@%%%=?*=@@@%%%*)
+ eval ac_cv_prog_make_${ac_make}_set=yes;;
+ *)
+ eval ac_cv_prog_make_${ac_make}_set=no;;
+esac
+rm -f conftest.make
+fi
+if eval test \$ac_cv_prog_make_${ac_make}_set = yes; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+ SET_MAKE=
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+ SET_MAKE="MAKE=${MAKE-make}"
+fi
+
+case `pwd` in
+ *\ * | *\ *)
+ { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: Libtool does not cope well with whitespace in \`pwd\`" >&5
+$as_echo "$as_me: WARNING: Libtool does not cope well with whitespace in \`pwd\`" >&2;} ;;
+esac
+
+
+
+macro_version='2.2.6b'
+macro_revision='1.3017'
+
+
+
+
+
+
+
+
+
+
+
+
+
+ltmain="$ac_aux_dir/ltmain.sh"
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for BSD- or MS-compatible name lister (nm)" >&5
+$as_echo_n "checking for BSD- or MS-compatible name lister (nm)... " >&6; }
+if test "${lt_cv_path_NM+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$NM"; then
+ # Let the user override the test.
+ lt_cv_path_NM="$NM"
+else
+ lt_nm_to_check="${ac_tool_prefix}nm"
+ if test -n "$ac_tool_prefix" && test "$build" = "$host"; then
+ lt_nm_to_check="$lt_nm_to_check nm"
+ fi
+ for lt_tmp_nm in $lt_nm_to_check; do
+ lt_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
+ for ac_dir in $PATH /usr/ccs/bin/elf /usr/ccs/bin /usr/ucb /bin; do
+ IFS="$lt_save_ifs"
+ test -z "$ac_dir" && ac_dir=.
+ tmp_nm="$ac_dir/$lt_tmp_nm"
+ if test -f "$tmp_nm" || test -f "$tmp_nm$ac_exeext" ; then
+ # Check to see if the nm accepts a BSD-compat flag.
+ # Adding the `sed 1q' prevents false positives on HP-UX, which says:
+ # nm: unknown option "B" ignored
+ # Tru64's nm complains that /dev/null is an invalid object file
+ case `"$tmp_nm" -B /dev/null 2>&1 | sed '1q'` in
+ */dev/null* | *'Invalid file or object type'*)
+ lt_cv_path_NM="$tmp_nm -B"
+ break
+ ;;
+ *)
+ case `"$tmp_nm" -p /dev/null 2>&1 | sed '1q'` in
+ */dev/null*)
+ lt_cv_path_NM="$tmp_nm -p"
+ break
+ ;;
+ *)
+ lt_cv_path_NM=${lt_cv_path_NM="$tmp_nm"} # keep the first match, but
+ continue # so that we can try to find one that supports BSD flags
+ ;;
+ esac
+ ;;
+ esac
+ fi
+ done
+ IFS="$lt_save_ifs"
+ done
+ : ${lt_cv_path_NM=no}
+fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_path_NM" >&5
+$as_echo "$lt_cv_path_NM" >&6; }
+if test "$lt_cv_path_NM" != "no"; then
+ NM="$lt_cv_path_NM"
+else
+ # Didn't find any BSD compatible name lister, look for dumpbin.
+ if test -n "$ac_tool_prefix"; then
+ for ac_prog in "dumpbin -symbols" "link -dump -symbols"
+ do
+ # Extract the first word of "$ac_tool_prefix$ac_prog", so it can be a program name with args.
+set dummy $ac_tool_prefix$ac_prog; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_DUMPBIN+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$DUMPBIN"; then
+ ac_cv_prog_DUMPBIN="$DUMPBIN" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_DUMPBIN="$ac_tool_prefix$ac_prog"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+DUMPBIN=$ac_cv_prog_DUMPBIN
+if test -n "$DUMPBIN"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $DUMPBIN" >&5
+$as_echo "$DUMPBIN" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+ test -n "$DUMPBIN" && break
+ done
+fi
+if test -z "$DUMPBIN"; then
+ ac_ct_DUMPBIN=$DUMPBIN
+ for ac_prog in "dumpbin -symbols" "link -dump -symbols"
+do
+ # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_DUMPBIN+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$ac_ct_DUMPBIN"; then
+ ac_cv_prog_ac_ct_DUMPBIN="$ac_ct_DUMPBIN" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_ac_ct_DUMPBIN="$ac_prog"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_DUMPBIN=$ac_cv_prog_ac_ct_DUMPBIN
+if test -n "$ac_ct_DUMPBIN"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_DUMPBIN" >&5
+$as_echo "$ac_ct_DUMPBIN" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+ test -n "$ac_ct_DUMPBIN" && break
+done
+
+ if test "x$ac_ct_DUMPBIN" = x; then
+ DUMPBIN=":"
+ else
+ case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+ DUMPBIN=$ac_ct_DUMPBIN
+ fi
+fi
+
+
+ if test "$DUMPBIN" != ":"; then
+ NM="$DUMPBIN"
+ fi
+fi
+test -z "$NM" && NM=nm
+
+
+
+
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking the name lister ($NM) interface" >&5
+$as_echo_n "checking the name lister ($NM) interface... " >&6; }
+if test "${lt_cv_nm_interface+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ lt_cv_nm_interface="BSD nm"
+ echo "int some_variable = 0;" > conftest.$ac_ext
+ (eval echo "\"\$as_me:5153: $ac_compile\"" >&5)
+ (eval "$ac_compile" 2>conftest.err)
+ cat conftest.err >&5
+ (eval echo "\"\$as_me:5156: $NM \\\"conftest.$ac_objext\\\"\"" >&5)
+ (eval "$NM \"conftest.$ac_objext\"" 2>conftest.err > conftest.out)
+ cat conftest.err >&5
+ (eval echo "\"\$as_me:5159: output\"" >&5)
+ cat conftest.out >&5
+ if $GREP 'External.*some_variable' conftest.out > /dev/null; then
+ lt_cv_nm_interface="MS dumpbin"
+ fi
+ rm -f conftest*
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_nm_interface" >&5
+$as_echo "$lt_cv_nm_interface" >&6; }
+
+# find the maximum length of command line arguments
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking the maximum length of command line arguments" >&5
+$as_echo_n "checking the maximum length of command line arguments... " >&6; }
+if test "${lt_cv_sys_max_cmd_len+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ i=0
+ teststring="ABCD"
+
+ case $build_os in
+ msdosdjgpp*)
+ # On DJGPP, this test can blow up pretty badly due to problems in libc
+ # (any single argument exceeding 2000 bytes causes a buffer overrun
+ # during glob expansion). Even if it were fixed, the result of this
+ # check would be larger than it should be.
+ lt_cv_sys_max_cmd_len=12288; # 12K is about right
+ ;;
+
+ gnu*)
+ # Under GNU Hurd, this test is not required because there is
+ # no limit to the length of command line arguments.
+ # Libtool will interpret -1 as no limit whatsoever
+ lt_cv_sys_max_cmd_len=-1;
+ ;;
+
+ cygwin* | mingw* | cegcc*)
+ # On Win9x/ME, this test blows up -- it succeeds, but takes
+ # about 5 minutes as the teststring grows exponentially.
+ # Worse, since 9x/ME are not pre-emptively multitasking,
+ # you end up with a "frozen" computer, even though with patience
+ # the test eventually succeeds (with a max line length of 256k).
+ # Instead, let's just punt: use the minimum linelength reported by
+ # all of the supported platforms: 8192 (on NT/2K/XP).
+ lt_cv_sys_max_cmd_len=8192;
+ ;;
+
+ amigaos*)
+ # On AmigaOS with pdksh, this test takes hours, literally.
+ # So we just punt and use a minimum line length of 8192.
+ lt_cv_sys_max_cmd_len=8192;
+ ;;
+
+ netbsd* | freebsd* | openbsd* | darwin* | dragonfly*)
+ # This has been around since 386BSD, at least. Likely further.
+ if test -x /sbin/sysctl; then
+ lt_cv_sys_max_cmd_len=`/sbin/sysctl -n kern.argmax`
+ elif test -x /usr/sbin/sysctl; then
+ lt_cv_sys_max_cmd_len=`/usr/sbin/sysctl -n kern.argmax`
+ else
+ lt_cv_sys_max_cmd_len=65536 # usable default for all BSDs
+ fi
+ # And add a safety zone
+ lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \/ 4`
+ lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \* 3`
+ ;;
+
+ interix*)
+ # We know the value 262144 and hardcode it with a safety zone (like BSD)
+ lt_cv_sys_max_cmd_len=196608
+ ;;
+
+ osf*)
+ # Dr. Hans Ekkehard Plesser reports seeing a kernel panic running configure
+ # due to this test when exec_disable_arg_limit is 1 on Tru64. It is not
+ # nice to cause kernel panics so lets avoid the loop below.
+ # First set a reasonable default.
+ lt_cv_sys_max_cmd_len=16384
+ #
+ if test -x /sbin/sysconfig; then
+ case `/sbin/sysconfig -q proc exec_disable_arg_limit` in
+ *1*) lt_cv_sys_max_cmd_len=-1 ;;
+ esac
+ fi
+ ;;
+ sco3.2v5*)
+ lt_cv_sys_max_cmd_len=102400
+ ;;
+ sysv5* | sco5v6* | sysv4.2uw2*)
+ kargmax=`grep ARG_MAX /etc/conf/cf.d/stune 2>/dev/null`
+ if test -n "$kargmax"; then
+ lt_cv_sys_max_cmd_len=`echo $kargmax | sed 's/.*[ ]//'`
+ else
+ lt_cv_sys_max_cmd_len=32768
+ fi
+ ;;
+ *)
+ lt_cv_sys_max_cmd_len=`(getconf ARG_MAX) 2> /dev/null`
+ if test -n "$lt_cv_sys_max_cmd_len"; then
+ lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \/ 4`
+ lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \* 3`
+ else
+ # Make teststring a little bigger before we do anything with it.
+ # a 1K string should be a reasonable start.
+ for i in 1 2 3 4 5 6 7 8 ; do
+ teststring=$teststring$teststring
+ done
+ SHELL=${SHELL-${CONFIG_SHELL-/bin/sh}}
+ # If test is not a shell built-in, we'll probably end up computing a
+ # maximum length that is only half of the actual maximum length, but
+ # we can't tell.
+ while { test "X"`$SHELL $0 --fallback-echo "X$teststring$teststring" 2>/dev/null` \
+ = "XX$teststring$teststring"; } >/dev/null 2>&1 &&
+ test $i != 17 # 1/2 MB should be enough
+ do
+ i=`expr $i + 1`
+ teststring=$teststring$teststring
+ done
+ # Only check the string length outside the loop.
+ lt_cv_sys_max_cmd_len=`expr "X$teststring" : ".*" 2>&1`
+ teststring=
+ # Add a significant safety factor because C++ compilers can tack on
+ # massive amounts of additional arguments before passing them to the
+ # linker. It appears as though 1/2 is a usable value.
+ lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \/ 2`
+ fi
+ ;;
+ esac
+
+fi
+
+if test -n $lt_cv_sys_max_cmd_len ; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_sys_max_cmd_len" >&5
+$as_echo "$lt_cv_sys_max_cmd_len" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: none" >&5
+$as_echo "none" >&6; }
+fi
+max_cmd_len=$lt_cv_sys_max_cmd_len
+
+
+
+
+
+
+: ${CP="cp -f"}
+: ${MV="mv -f"}
+: ${RM="rm -f"}
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the shell understands some XSI constructs" >&5
+$as_echo_n "checking whether the shell understands some XSI constructs... " >&6; }
+# Try some XSI features
+xsi_shell=no
+( _lt_dummy="a/b/c"
+ test "${_lt_dummy##*/},${_lt_dummy%/*},"${_lt_dummy%"$_lt_dummy"}, \
+ = c,a/b,, \
+ && eval 'test $(( 1 + 1 )) -eq 2 \
+ && test "${#_lt_dummy}" -eq 5' ) >/dev/null 2>&1 \
+ && xsi_shell=yes
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $xsi_shell" >&5
+$as_echo "$xsi_shell" >&6; }
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the shell understands \"+=\"" >&5
+$as_echo_n "checking whether the shell understands \"+=\"... " >&6; }
+lt_shell_append=no
+( foo=bar; set foo baz; eval "$1+=\$2" && test "$foo" = barbaz ) \
+ >/dev/null 2>&1 \
+ && lt_shell_append=yes
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_shell_append" >&5
+$as_echo "$lt_shell_append" >&6; }
+
+
+if ( (MAIL=60; unset MAIL) || exit) >/dev/null 2>&1; then
+ lt_unset=unset
+else
+ lt_unset=false
+fi
+
+
+
+
+
+# test EBCDIC or ASCII
+case `echo X|tr X '\101'` in
+ A) # ASCII based system
+ # \n is not interpreted correctly by Solaris 8 /usr/ucb/tr
+ lt_SP2NL='tr \040 \012'
+ lt_NL2SP='tr \015\012 \040\040'
+ ;;
+ *) # EBCDIC based system
+ lt_SP2NL='tr \100 \n'
+ lt_NL2SP='tr \r\n \100\100'
+ ;;
+esac
+
+
+
+
+
+
+
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $LD option to reload object files" >&5
+$as_echo_n "checking for $LD option to reload object files... " >&6; }
+if test "${lt_cv_ld_reload_flag+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ lt_cv_ld_reload_flag='-r'
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_ld_reload_flag" >&5
+$as_echo "$lt_cv_ld_reload_flag" >&6; }
+reload_flag=$lt_cv_ld_reload_flag
+case $reload_flag in
+"" | " "*) ;;
+*) reload_flag=" $reload_flag" ;;
+esac
+reload_cmds='$LD$reload_flag -o $output$reload_objs'
+case $host_os in
+ darwin*)
+ if test "$GCC" = yes; then
+ reload_cmds='$LTCC $LTCFLAGS -nostdlib ${wl}-r -o $output$reload_objs'
+ else
+ reload_cmds='$LD$reload_flag -o $output$reload_objs'
+ fi
+ ;;
+esac
+
+
+
+
+
+
+
+
+
+if test -n "$ac_tool_prefix"; then
+ # Extract the first word of "${ac_tool_prefix}objdump", so it can be a program name with args.
+set dummy ${ac_tool_prefix}objdump; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_OBJDUMP+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$OBJDUMP"; then
+ ac_cv_prog_OBJDUMP="$OBJDUMP" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_OBJDUMP="${ac_tool_prefix}objdump"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+OBJDUMP=$ac_cv_prog_OBJDUMP
+if test -n "$OBJDUMP"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $OBJDUMP" >&5
+$as_echo "$OBJDUMP" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_OBJDUMP"; then
+ ac_ct_OBJDUMP=$OBJDUMP
+ # Extract the first word of "objdump", so it can be a program name with args.
+set dummy objdump; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_OBJDUMP+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$ac_ct_OBJDUMP"; then
+ ac_cv_prog_ac_ct_OBJDUMP="$ac_ct_OBJDUMP" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_ac_ct_OBJDUMP="objdump"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_OBJDUMP=$ac_cv_prog_ac_ct_OBJDUMP
+if test -n "$ac_ct_OBJDUMP"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_OBJDUMP" >&5
+$as_echo "$ac_ct_OBJDUMP" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+ if test "x$ac_ct_OBJDUMP" = x; then
+ OBJDUMP="false"
+ else
+ case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+ OBJDUMP=$ac_ct_OBJDUMP
+ fi
+else
+ OBJDUMP="$ac_cv_prog_OBJDUMP"
+fi
+
+test -z "$OBJDUMP" && OBJDUMP=objdump
+
+
+
+
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking how to recognize dependent libraries" >&5
+$as_echo_n "checking how to recognize dependent libraries... " >&6; }
+if test "${lt_cv_deplibs_check_method+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ lt_cv_file_magic_cmd='$MAGIC_CMD'
+lt_cv_file_magic_test_file=
+lt_cv_deplibs_check_method='unknown'
+# Need to set the preceding variable on all platforms that support
+# interlibrary dependencies.
+# 'none' -- dependencies not supported.
+# `unknown' -- same as none, but documents that we really don't know.
+# 'pass_all' -- all dependencies passed with no checks.
+# 'test_compile' -- check by making test program.
+# 'file_magic [[regex]]' -- check by looking for files in library path
+# which responds to the $file_magic_cmd with a given extended regex.
+# If you have `file' or equivalent on your system and you're not sure
+# whether `pass_all' will *always* work, you probably want this one.
+
+case $host_os in
+aix[4-9]*)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+
+beos*)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+
+bsdi[45]*)
+ lt_cv_deplibs_check_method='file_magic ELF [0-9][0-9]*-bit [ML]SB (shared object|dynamic lib)'
+ lt_cv_file_magic_cmd='/usr/bin/file -L'
+ lt_cv_file_magic_test_file=/shlib/libc.so
+ ;;
+
+cygwin*)
+ # func_win32_libid is a shell function defined in ltmain.sh
+ lt_cv_deplibs_check_method='file_magic ^x86 archive import|^x86 DLL'
+ lt_cv_file_magic_cmd='func_win32_libid'
+ ;;
+
+mingw* | pw32*)
+ # Base MSYS/MinGW do not provide the 'file' command needed by
+ # func_win32_libid shell function, so use a weaker test based on 'objdump',
+ # unless we find 'file', for example because we are cross-compiling.
+ if ( file / ) >/dev/null 2>&1; then
+ lt_cv_deplibs_check_method='file_magic ^x86 archive import|^x86 DLL'
+ lt_cv_file_magic_cmd='func_win32_libid'
+ else
+ lt_cv_deplibs_check_method='file_magic file format pei*-i386(.*architecture: i386)?'
+ lt_cv_file_magic_cmd='$OBJDUMP -f'
+ fi
+ ;;
+
+cegcc)
+ # use the weaker test based on 'objdump'. See mingw*.
+ lt_cv_deplibs_check_method='file_magic file format pe-arm-.*little(.*architecture: arm)?'
+ lt_cv_file_magic_cmd='$OBJDUMP -f'
+ ;;
+
+darwin* | rhapsody*)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+
+freebsd* | dragonfly*)
+ if echo __ELF__ | $CC -E - | $GREP __ELF__ > /dev/null; then
+ case $host_cpu in
+ i*86 )
+ # Not sure whether the presence of OpenBSD here was a mistake.
+ # Let's accept both of them until this is cleared up.
+ lt_cv_deplibs_check_method='file_magic (FreeBSD|OpenBSD|DragonFly)/i[3-9]86 (compact )?demand paged shared library'
+ lt_cv_file_magic_cmd=/usr/bin/file
+ lt_cv_file_magic_test_file=`echo /usr/lib/libc.so.*`
+ ;;
+ esac
+ else
+ lt_cv_deplibs_check_method=pass_all
+ fi
+ ;;
+
+gnu*)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+
+hpux10.20* | hpux11*)
+ lt_cv_file_magic_cmd=/usr/bin/file
+ case $host_cpu in
+ ia64*)
+ lt_cv_deplibs_check_method='file_magic (s[0-9][0-9][0-9]|ELF-[0-9][0-9]) shared object file - IA64'
+ lt_cv_file_magic_test_file=/usr/lib/hpux32/libc.so
+ ;;
+ hppa*64*)
+ lt_cv_deplibs_check_method='file_magic (s[0-9][0-9][0-9]|ELF-[0-9][0-9]) shared object file - PA-RISC [0-9].[0-9]'
+ lt_cv_file_magic_test_file=/usr/lib/pa20_64/libc.sl
+ ;;
+ *)
+ lt_cv_deplibs_check_method='file_magic (s[0-9][0-9][0-9]|PA-RISC[0-9].[0-9]) shared library'
+ lt_cv_file_magic_test_file=/usr/lib/libc.sl
+ ;;
+ esac
+ ;;
+
+interix[3-9]*)
+ # PIC code is broken on Interix 3.x, that's why |\.a not |_pic\.a here
+ lt_cv_deplibs_check_method='match_pattern /lib[^/]+(\.so|\.a)$'
+ ;;
+
+irix5* | irix6* | nonstopux*)
+ case $LD in
+ *-32|*"-32 ") libmagic=32-bit;;
+ *-n32|*"-n32 ") libmagic=N32;;
+ *-64|*"-64 ") libmagic=64-bit;;
+ *) libmagic=never-match;;
+ esac
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+
+# This must be Linux ELF.
+linux* | k*bsd*-gnu)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+
+netbsd*)
+ if echo __ELF__ | $CC -E - | $GREP __ELF__ > /dev/null; then
+ lt_cv_deplibs_check_method='match_pattern /lib[^/]+(\.so\.[0-9]+\.[0-9]+|_pic\.a)$'
+ else
+ lt_cv_deplibs_check_method='match_pattern /lib[^/]+(\.so|_pic\.a)$'
+ fi
+ ;;
+
+newos6*)
+ lt_cv_deplibs_check_method='file_magic ELF [0-9][0-9]*-bit [ML]SB (executable|dynamic lib)'
+ lt_cv_file_magic_cmd=/usr/bin/file
+ lt_cv_file_magic_test_file=/usr/lib/libnls.so
+ ;;
+
+*nto* | *qnx*)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+
+openbsd*)
+ if test -z "`echo __ELF__ | $CC -E - | $GREP __ELF__`" || test "$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
+ lt_cv_deplibs_check_method='match_pattern /lib[^/]+(\.so\.[0-9]+\.[0-9]+|\.so|_pic\.a)$'
+ else
+ lt_cv_deplibs_check_method='match_pattern /lib[^/]+(\.so\.[0-9]+\.[0-9]+|_pic\.a)$'
+ fi
+ ;;
+
+osf3* | osf4* | osf5*)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+
+rdos*)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+
+solaris*)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+
+sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX* | sysv4*uw2*)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+
+sysv4 | sysv4.3*)
+ case $host_vendor in
+ motorola)
+ lt_cv_deplibs_check_method='file_magic ELF [0-9][0-9]*-bit [ML]SB (shared object|dynamic lib) M[0-9][0-9]* Version [0-9]'
+ lt_cv_file_magic_test_file=`echo /usr/lib/libc.so*`
+ ;;
+ ncr)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+ sequent)
+ lt_cv_file_magic_cmd='/bin/file'
+ lt_cv_deplibs_check_method='file_magic ELF [0-9][0-9]*-bit [LM]SB (shared object|dynamic lib )'
+ ;;
+ sni)
+ lt_cv_file_magic_cmd='/bin/file'
+ lt_cv_deplibs_check_method="file_magic ELF [0-9][0-9]*-bit [LM]SB dynamic lib"
+ lt_cv_file_magic_test_file=/lib/libc.so
+ ;;
+ siemens)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+ pc)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+ esac
+ ;;
+
+tpf*)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+esac
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_deplibs_check_method" >&5
+$as_echo "$lt_cv_deplibs_check_method" >&6; }
+file_magic_cmd=$lt_cv_file_magic_cmd
+deplibs_check_method=$lt_cv_deplibs_check_method
+test -z "$deplibs_check_method" && deplibs_check_method=unknown
+
+
+
+
+
+
+
+
+
+
+
+
+if test -n "$ac_tool_prefix"; then
+ # Extract the first word of "${ac_tool_prefix}ar", so it can be a program name with args.
+set dummy ${ac_tool_prefix}ar; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_AR+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$AR"; then
+ ac_cv_prog_AR="$AR" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_AR="${ac_tool_prefix}ar"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+AR=$ac_cv_prog_AR
+if test -n "$AR"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $AR" >&5
+$as_echo "$AR" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_AR"; then
+ ac_ct_AR=$AR
+ # Extract the first word of "ar", so it can be a program name with args.
+set dummy ar; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_AR+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$ac_ct_AR"; then
+ ac_cv_prog_ac_ct_AR="$ac_ct_AR" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_ac_ct_AR="ar"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_AR=$ac_cv_prog_ac_ct_AR
+if test -n "$ac_ct_AR"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_AR" >&5
+$as_echo "$ac_ct_AR" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+ if test "x$ac_ct_AR" = x; then
+ AR="false"
+ else
+ case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+ AR=$ac_ct_AR
+ fi
+else
+ AR="$ac_cv_prog_AR"
+fi
+
+test -z "$AR" && AR=ar
+test -z "$AR_FLAGS" && AR_FLAGS=cru
+
+
+
+
+
+
+
+
+
+
+
+if test -n "$ac_tool_prefix"; then
+ # Extract the first word of "${ac_tool_prefix}strip", so it can be a program name with args.
+set dummy ${ac_tool_prefix}strip; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_STRIP+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$STRIP"; then
+ ac_cv_prog_STRIP="$STRIP" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_STRIP="${ac_tool_prefix}strip"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+STRIP=$ac_cv_prog_STRIP
+if test -n "$STRIP"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $STRIP" >&5
+$as_echo "$STRIP" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_STRIP"; then
+ ac_ct_STRIP=$STRIP
+ # Extract the first word of "strip", so it can be a program name with args.
+set dummy strip; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_STRIP+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$ac_ct_STRIP"; then
+ ac_cv_prog_ac_ct_STRIP="$ac_ct_STRIP" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_ac_ct_STRIP="strip"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_STRIP=$ac_cv_prog_ac_ct_STRIP
+if test -n "$ac_ct_STRIP"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_STRIP" >&5
+$as_echo "$ac_ct_STRIP" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+ if test "x$ac_ct_STRIP" = x; then
+ STRIP=":"
+ else
+ case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+ STRIP=$ac_ct_STRIP
+ fi
+else
+ STRIP="$ac_cv_prog_STRIP"
+fi
+
+test -z "$STRIP" && STRIP=:
+
+
+
+
+
+
+if test -n "$ac_tool_prefix"; then
+ # Extract the first word of "${ac_tool_prefix}ranlib", so it can be a program name with args.
+set dummy ${ac_tool_prefix}ranlib; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_RANLIB+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$RANLIB"; then
+ ac_cv_prog_RANLIB="$RANLIB" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_RANLIB="${ac_tool_prefix}ranlib"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+RANLIB=$ac_cv_prog_RANLIB
+if test -n "$RANLIB"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $RANLIB" >&5
+$as_echo "$RANLIB" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_RANLIB"; then
+ ac_ct_RANLIB=$RANLIB
+ # Extract the first word of "ranlib", so it can be a program name with args.
+set dummy ranlib; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_RANLIB+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$ac_ct_RANLIB"; then
+ ac_cv_prog_ac_ct_RANLIB="$ac_ct_RANLIB" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_ac_ct_RANLIB="ranlib"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_RANLIB=$ac_cv_prog_ac_ct_RANLIB
+if test -n "$ac_ct_RANLIB"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_RANLIB" >&5
+$as_echo "$ac_ct_RANLIB" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+ if test "x$ac_ct_RANLIB" = x; then
+ RANLIB=":"
+ else
+ case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+ RANLIB=$ac_ct_RANLIB
+ fi
+else
+ RANLIB="$ac_cv_prog_RANLIB"
+fi
+
+test -z "$RANLIB" && RANLIB=:
+
+
+
+
+
+
+# Determine commands to create old-style static archives.
+old_archive_cmds='$AR $AR_FLAGS $oldlib$oldobjs'
+old_postinstall_cmds='chmod 644 $oldlib'
+old_postuninstall_cmds=
+
+if test -n "$RANLIB"; then
+ case $host_os in
+ openbsd*)
+ old_postinstall_cmds="$old_postinstall_cmds~\$RANLIB -t \$oldlib"
+ ;;
+ *)
+ old_postinstall_cmds="$old_postinstall_cmds~\$RANLIB \$oldlib"
+ ;;
+ esac
+ old_archive_cmds="$old_archive_cmds~\$RANLIB \$oldlib"
+fi
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+# If no C compiler was specified, use CC.
+LTCC=${LTCC-"$CC"}
+
+# If no C compiler flags were specified, use CFLAGS.
+LTCFLAGS=${LTCFLAGS-"$CFLAGS"}
+
+# Allow CC to be a program name with arguments.
+compiler=$CC
+
+
+# Check for command to grab the raw symbol name followed by C symbol from nm.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking command to parse $NM output from $compiler object" >&5
+$as_echo_n "checking command to parse $NM output from $compiler object... " >&6; }
+if test "${lt_cv_sys_global_symbol_pipe+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+
+# These are sane defaults that work on at least a few old systems.
+# [They come from Ultrix. What could be older than Ultrix?!! ;)]
+
+# Character class describing NM global symbol codes.
+symcode='[BCDEGRST]'
+
+# Regexp to match symbols that can be accessed directly from C.
+sympat='\([_A-Za-z][_A-Za-z0-9]*\)'
+
+# Define system-specific variables.
+case $host_os in
+aix*)
+ symcode='[BCDT]'
+ ;;
+cygwin* | mingw* | pw32* | cegcc*)
+ symcode='[ABCDGISTW]'
+ ;;
+hpux*)
+ if test "$host_cpu" = ia64; then
+ symcode='[ABCDEGRST]'
+ fi
+ ;;
+irix* | nonstopux*)
+ symcode='[BCDEGRST]'
+ ;;
+osf*)
+ symcode='[BCDEGQRST]'
+ ;;
+solaris*)
+ symcode='[BDRT]'
+ ;;
+sco3.2v5*)
+ symcode='[DT]'
+ ;;
+sysv4.2uw2*)
+ symcode='[DT]'
+ ;;
+sysv5* | sco5v6* | unixware* | OpenUNIX*)
+ symcode='[ABDT]'
+ ;;
+sysv4)
+ symcode='[DFNSTU]'
+ ;;
+esac
+
+# If we're using GNU nm, then use its standard symbol codes.
+case `$NM -V 2>&1` in
+*GNU* | *'with BFD'*)
+ symcode='[ABCDGIRSTW]' ;;
+esac
+
+# Transform an extracted symbol line into a proper C declaration.
+# Some systems (esp. on ia64) link data and code symbols differently,
+# so use this general approach.
+lt_cv_sys_global_symbol_to_cdecl="sed -n -e 's/^T .* \(.*\)$/extern int \1();/p' -e 's/^$symcode* .* \(.*\)$/extern char \1;/p'"
+
+# Transform an extracted symbol line into symbol name and symbol address
+lt_cv_sys_global_symbol_to_c_name_address="sed -n -e 's/^: \([^ ]*\) $/ {\\\"\1\\\", (void *) 0},/p' -e 's/^$symcode* \([^ ]*\) \([^ ]*\)$/ {\"\2\", (void *) \&\2},/p'"
+lt_cv_sys_global_symbol_to_c_name_address_lib_prefix="sed -n -e 's/^: \([^ ]*\) $/ {\\\"\1\\\", (void *) 0},/p' -e 's/^$symcode* \([^ ]*\) \(lib[^ ]*\)$/ {\"\2\", (void *) \&\2},/p' -e 's/^$symcode* \([^ ]*\) \([^ ]*\)$/ {\"lib\2\", (void *) \&\2},/p'"
+
+# Handle CRLF in mingw tool chain
+opt_cr=
+case $build_os in
+mingw*)
+ opt_cr=`$ECHO 'x\{0,1\}' | tr x '\015'` # option cr in regexp
+ ;;
+esac
+
+# Try without a prefix underscore, then with it.
+for ac_symprfx in "" "_"; do
+
+ # Transform symcode, sympat, and symprfx into a raw symbol and a C symbol.
+ symxfrm="\\1 $ac_symprfx\\2 \\2"
+
+ # Write the raw and C identifiers.
+ if test "$lt_cv_nm_interface" = "MS dumpbin"; then
+ # Fake it for dumpbin and say T for any non-static function
+ # and D for any global variable.
+ # Also find C++ and __fastcall symbols from MSVC++,
+ # which start with @ or ?.
+ lt_cv_sys_global_symbol_pipe="$AWK '"\
+" {last_section=section; section=\$ 3};"\
+" /Section length .*#relocs.*(pick any)/{hide[last_section]=1};"\
+" \$ 0!~/External *\|/{next};"\
+" / 0+ UNDEF /{next}; / UNDEF \([^|]\)*()/{next};"\
+" {if(hide[section]) next};"\
+" {f=0}; \$ 0~/\(\).*\|/{f=1}; {printf f ? \"T \" : \"D \"};"\
+" {split(\$ 0, a, /\||\r/); split(a[2], s)};"\
+" s[1]~/^[@?]/{print s[1], s[1]; next};"\
+" s[1]~prfx {split(s[1],t,\"@\"); print t[1], substr(t[1],length(prfx))}"\
+" ' prfx=^$ac_symprfx"
+ else
+ lt_cv_sys_global_symbol_pipe="sed -n -e 's/^.*[ ]\($symcode$symcode*\)[ ][ ]*$ac_symprfx$sympat$opt_cr$/$symxfrm/p'"
+ fi
+
+ # Check to see that the pipe works correctly.
+ pipe_works=no
+
+ rm -f conftest*
+ cat > conftest.$ac_ext <<_LT_EOF
+#ifdef __cplusplus
+extern "C" {
+#endif
+char nm_test_var;
+void nm_test_func(void);
+void nm_test_func(void){}
+#ifdef __cplusplus
+}
+#endif
+int main(){nm_test_var='a';nm_test_func();return(0);}
+_LT_EOF
+
+ if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5
+ (eval $ac_compile) 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; }; then
+ # Now try to grab the symbols.
+ nlist=conftest.nm
+ if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$NM conftest.$ac_objext \| $lt_cv_sys_global_symbol_pipe \> $nlist\""; } >&5
+ (eval $NM conftest.$ac_objext \| $lt_cv_sys_global_symbol_pipe \> $nlist) 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; } && test -s "$nlist"; then
+ # Try sorting and uniquifying the output.
+ if sort "$nlist" | uniq > "$nlist"T; then
+ mv -f "$nlist"T "$nlist"
+ else
+ rm -f "$nlist"T
+ fi
+
+ # Make sure that we snagged all the symbols we need.
+ if $GREP ' nm_test_var$' "$nlist" >/dev/null; then
+ if $GREP ' nm_test_func$' "$nlist" >/dev/null; then
+ cat <<_LT_EOF > conftest.$ac_ext
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+_LT_EOF
+ # Now generate the symbol file.
+ eval "$lt_cv_sys_global_symbol_to_cdecl"' < "$nlist" | $GREP -v main >> conftest.$ac_ext'
+
+ cat <<_LT_EOF >> conftest.$ac_ext
+
+/* The mapping between symbol names and symbols. */
+const struct {
+ const char *name;
+ void *address;
+}
+lt__PROGRAM__LTX_preloaded_symbols[] =
+{
+ { "@PROGRAM@", (void *) 0 },
+_LT_EOF
+ $SED "s/^$symcode$symcode* \(.*\) \(.*\)$/ {\"\2\", (void *) \&\2},/" < "$nlist" | $GREP -v main >> conftest.$ac_ext
+ cat <<\_LT_EOF >> conftest.$ac_ext
+ {0, (void *) 0}
+};
+
+/* This works around a problem in FreeBSD linker */
+#ifdef FREEBSD_WORKAROUND
+static const void *lt_preloaded_setup() {
+ return lt__PROGRAM__LTX_preloaded_symbols;
+}
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+_LT_EOF
+ # Now try linking the two files.
+ mv conftest.$ac_objext conftstm.$ac_objext
+ lt_save_LIBS="$LIBS"
+ lt_save_CFLAGS="$CFLAGS"
+ LIBS="conftstm.$ac_objext"
+ CFLAGS="$CFLAGS$lt_prog_compiler_no_builtin_flag"
+ if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
+ (eval $ac_link) 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; } && test -s conftest${ac_exeext}; then
+ pipe_works=yes
+ fi
+ LIBS="$lt_save_LIBS"
+ CFLAGS="$lt_save_CFLAGS"
+ else
+ echo "cannot find nm_test_func in $nlist" >&5
+ fi
+ else
+ echo "cannot find nm_test_var in $nlist" >&5
+ fi
+ else
+ echo "cannot run $lt_cv_sys_global_symbol_pipe" >&5
+ fi
+ else
+ echo "$progname: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ fi
+ rm -rf conftest* conftst*
+
+ # Do not use the global_symbol_pipe unless it works.
+ if test "$pipe_works" = yes; then
+ break
+ else
+ lt_cv_sys_global_symbol_pipe=
+ fi
+done
+
+fi
+
+if test -z "$lt_cv_sys_global_symbol_pipe"; then
+ lt_cv_sys_global_symbol_to_cdecl=
+fi
+if test -z "$lt_cv_sys_global_symbol_pipe$lt_cv_sys_global_symbol_to_cdecl"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: failed" >&5
+$as_echo "failed" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: ok" >&5
+$as_echo "ok" >&6; }
+fi
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+# Check whether --enable-libtool-lock was given.
+if test "${enable_libtool_lock+set}" = set; then :
+ enableval=$enable_libtool_lock;
+fi
+
+test "x$enable_libtool_lock" != xno && enable_libtool_lock=yes
+
+# Some flags need to be propagated to the compiler or linker for good
+# libtool support.
+case $host in
+ia64-*-hpux*)
+ # Find out which ABI we are using.
+ echo 'int i;' > conftest.$ac_ext
+ if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5
+ (eval $ac_compile) 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; }; then
+ case `/usr/bin/file conftest.$ac_objext` in
+ *ELF-32*)
+ HPUX_IA64_MODE="32"
+ ;;
+ *ELF-64*)
+ HPUX_IA64_MODE="64"
+ ;;
+ esac
+ fi
+ rm -rf conftest*
+ ;;
+*-*-irix6*)
+ # Find out which ABI we are using.
+ echo '#line 6351 "configure"' > conftest.$ac_ext
+ if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5
+ (eval $ac_compile) 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; }; then
+ if test "$lt_cv_prog_gnu_ld" = yes; then
+ case `/usr/bin/file conftest.$ac_objext` in
+ *32-bit*)
+ LD="${LD-ld} -melf32bsmip"
+ ;;
+ *N32*)
+ LD="${LD-ld} -melf32bmipn32"
+ ;;
+ *64-bit*)
+ LD="${LD-ld} -melf64bmip"
+ ;;
+ esac
+ else
+ case `/usr/bin/file conftest.$ac_objext` in
+ *32-bit*)
+ LD="${LD-ld} -32"
+ ;;
+ *N32*)
+ LD="${LD-ld} -n32"
+ ;;
+ *64-bit*)
+ LD="${LD-ld} -64"
+ ;;
+ esac
+ fi
+ fi
+ rm -rf conftest*
+ ;;
+
+x86_64-*kfreebsd*-gnu|x86_64-*linux*|ppc*-*linux*|powerpc*-*linux*| \
+s390*-*linux*|s390*-*tpf*|sparc*-*linux*)
+ # Find out which ABI we are using.
+ echo 'int i;' > conftest.$ac_ext
+ if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5
+ (eval $ac_compile) 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; }; then
+ case `/usr/bin/file conftest.o` in
+ *32-bit*)
+ case $host in
+ x86_64-*kfreebsd*-gnu)
+ LD="${LD-ld} -m elf_i386_fbsd"
+ ;;
+ x86_64-*linux*)
+ LD="${LD-ld} -m elf_i386"
+ ;;
+ ppc64-*linux*|powerpc64-*linux*)
+ LD="${LD-ld} -m elf32ppclinux"
+ ;;
+ s390x-*linux*)
+ LD="${LD-ld} -m elf_s390"
+ ;;
+ sparc64-*linux*)
+ LD="${LD-ld} -m elf32_sparc"
+ ;;
+ esac
+ ;;
+ *64-bit*)
+ case $host in
+ x86_64-*kfreebsd*-gnu)
+ LD="${LD-ld} -m elf_x86_64_fbsd"
+ ;;
+ x86_64-*linux*)
+ LD="${LD-ld} -m elf_x86_64"
+ ;;
+ ppc*-*linux*|powerpc*-*linux*)
+ LD="${LD-ld} -m elf64ppc"
+ ;;
+ s390*-*linux*|s390*-*tpf*)
+ LD="${LD-ld} -m elf64_s390"
+ ;;
+ sparc*-*linux*)
+ LD="${LD-ld} -m elf64_sparc"
+ ;;
+ esac
+ ;;
+ esac
+ fi
+ rm -rf conftest*
+ ;;
+
+*-*-sco3.2v5*)
+ # On SCO OpenServer 5, we need -belf to get full-featured binaries.
+ SAVE_CFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS -belf"
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the C compiler needs -belf" >&5
+$as_echo_n "checking whether the C compiler needs -belf... " >&6; }
+if test "${lt_cv_cc_needs_belf+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+int
+main ()
+{
+
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+ lt_cv_cc_needs_belf=yes
+else
+ lt_cv_cc_needs_belf=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+ conftest$ac_exeext conftest.$ac_ext
+ ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_cc_needs_belf" >&5
+$as_echo "$lt_cv_cc_needs_belf" >&6; }
+ if test x"$lt_cv_cc_needs_belf" != x"yes"; then
+ # this is probably gcc 2.8.0, egcs 1.0 or newer; no need for -belf
+ CFLAGS="$SAVE_CFLAGS"
+ fi
+ ;;
+sparc*-*solaris*)
+ # Find out which ABI we are using.
+ echo 'int i;' > conftest.$ac_ext
+ if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5
+ (eval $ac_compile) 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; }; then
+ case `/usr/bin/file conftest.o` in
+ *64-bit*)
+ case $lt_cv_prog_gnu_ld in
+ yes*) LD="${LD-ld} -m elf64_sparc" ;;
+ *)
+ if ${LD-ld} -64 -r -o conftest2.o conftest.o >/dev/null 2>&1; then
+ LD="${LD-ld} -64"
+ fi
+ ;;
+ esac
+ ;;
+ esac
+ fi
+ rm -rf conftest*
+ ;;
+esac
+
+need_locks="$enable_libtool_lock"
+
+
+ case $host_os in
+ rhapsody* | darwin*)
+ if test -n "$ac_tool_prefix"; then
+ # Extract the first word of "${ac_tool_prefix}dsymutil", so it can be a program name with args.
+set dummy ${ac_tool_prefix}dsymutil; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_DSYMUTIL+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$DSYMUTIL"; then
+ ac_cv_prog_DSYMUTIL="$DSYMUTIL" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_DSYMUTIL="${ac_tool_prefix}dsymutil"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+DSYMUTIL=$ac_cv_prog_DSYMUTIL
+if test -n "$DSYMUTIL"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $DSYMUTIL" >&5
+$as_echo "$DSYMUTIL" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_DSYMUTIL"; then
+ ac_ct_DSYMUTIL=$DSYMUTIL
+ # Extract the first word of "dsymutil", so it can be a program name with args.
+set dummy dsymutil; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_DSYMUTIL+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$ac_ct_DSYMUTIL"; then
+ ac_cv_prog_ac_ct_DSYMUTIL="$ac_ct_DSYMUTIL" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_ac_ct_DSYMUTIL="dsymutil"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_DSYMUTIL=$ac_cv_prog_ac_ct_DSYMUTIL
+if test -n "$ac_ct_DSYMUTIL"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_DSYMUTIL" >&5
+$as_echo "$ac_ct_DSYMUTIL" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+ if test "x$ac_ct_DSYMUTIL" = x; then
+ DSYMUTIL=":"
+ else
+ case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+ DSYMUTIL=$ac_ct_DSYMUTIL
+ fi
+else
+ DSYMUTIL="$ac_cv_prog_DSYMUTIL"
+fi
+
+ if test -n "$ac_tool_prefix"; then
+ # Extract the first word of "${ac_tool_prefix}nmedit", so it can be a program name with args.
+set dummy ${ac_tool_prefix}nmedit; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_NMEDIT+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$NMEDIT"; then
+ ac_cv_prog_NMEDIT="$NMEDIT" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_NMEDIT="${ac_tool_prefix}nmedit"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+NMEDIT=$ac_cv_prog_NMEDIT
+if test -n "$NMEDIT"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $NMEDIT" >&5
+$as_echo "$NMEDIT" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_NMEDIT"; then
+ ac_ct_NMEDIT=$NMEDIT
+ # Extract the first word of "nmedit", so it can be a program name with args.
+set dummy nmedit; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_NMEDIT+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$ac_ct_NMEDIT"; then
+ ac_cv_prog_ac_ct_NMEDIT="$ac_ct_NMEDIT" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_ac_ct_NMEDIT="nmedit"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_NMEDIT=$ac_cv_prog_ac_ct_NMEDIT
+if test -n "$ac_ct_NMEDIT"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_NMEDIT" >&5
+$as_echo "$ac_ct_NMEDIT" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+ if test "x$ac_ct_NMEDIT" = x; then
+ NMEDIT=":"
+ else
+ case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+ NMEDIT=$ac_ct_NMEDIT
+ fi
+else
+ NMEDIT="$ac_cv_prog_NMEDIT"
+fi
+
+ if test -n "$ac_tool_prefix"; then
+ # Extract the first word of "${ac_tool_prefix}lipo", so it can be a program name with args.
+set dummy ${ac_tool_prefix}lipo; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_LIPO+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$LIPO"; then
+ ac_cv_prog_LIPO="$LIPO" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_LIPO="${ac_tool_prefix}lipo"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+LIPO=$ac_cv_prog_LIPO
+if test -n "$LIPO"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $LIPO" >&5
+$as_echo "$LIPO" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_LIPO"; then
+ ac_ct_LIPO=$LIPO
+ # Extract the first word of "lipo", so it can be a program name with args.
+set dummy lipo; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_LIPO+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$ac_ct_LIPO"; then
+ ac_cv_prog_ac_ct_LIPO="$ac_ct_LIPO" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_ac_ct_LIPO="lipo"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_LIPO=$ac_cv_prog_ac_ct_LIPO
+if test -n "$ac_ct_LIPO"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_LIPO" >&5
+$as_echo "$ac_ct_LIPO" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+ if test "x$ac_ct_LIPO" = x; then
+ LIPO=":"
+ else
+ case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+ LIPO=$ac_ct_LIPO
+ fi
+else
+ LIPO="$ac_cv_prog_LIPO"
+fi
+
+ if test -n "$ac_tool_prefix"; then
+ # Extract the first word of "${ac_tool_prefix}otool", so it can be a program name with args.
+set dummy ${ac_tool_prefix}otool; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_OTOOL+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$OTOOL"; then
+ ac_cv_prog_OTOOL="$OTOOL" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_OTOOL="${ac_tool_prefix}otool"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+OTOOL=$ac_cv_prog_OTOOL
+if test -n "$OTOOL"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $OTOOL" >&5
+$as_echo "$OTOOL" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_OTOOL"; then
+ ac_ct_OTOOL=$OTOOL
+ # Extract the first word of "otool", so it can be a program name with args.
+set dummy otool; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_OTOOL+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$ac_ct_OTOOL"; then
+ ac_cv_prog_ac_ct_OTOOL="$ac_ct_OTOOL" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_ac_ct_OTOOL="otool"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_OTOOL=$ac_cv_prog_ac_ct_OTOOL
+if test -n "$ac_ct_OTOOL"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_OTOOL" >&5
+$as_echo "$ac_ct_OTOOL" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+ if test "x$ac_ct_OTOOL" = x; then
+ OTOOL=":"
+ else
+ case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+ OTOOL=$ac_ct_OTOOL
+ fi
+else
+ OTOOL="$ac_cv_prog_OTOOL"
+fi
+
+ if test -n "$ac_tool_prefix"; then
+ # Extract the first word of "${ac_tool_prefix}otool64", so it can be a program name with args.
+set dummy ${ac_tool_prefix}otool64; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_OTOOL64+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$OTOOL64"; then
+ ac_cv_prog_OTOOL64="$OTOOL64" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_OTOOL64="${ac_tool_prefix}otool64"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+OTOOL64=$ac_cv_prog_OTOOL64
+if test -n "$OTOOL64"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $OTOOL64" >&5
+$as_echo "$OTOOL64" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_OTOOL64"; then
+ ac_ct_OTOOL64=$OTOOL64
+ # Extract the first word of "otool64", so it can be a program name with args.
+set dummy otool64; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_OTOOL64+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$ac_ct_OTOOL64"; then
+ ac_cv_prog_ac_ct_OTOOL64="$ac_ct_OTOOL64" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_ac_ct_OTOOL64="otool64"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_OTOOL64=$ac_cv_prog_ac_ct_OTOOL64
+if test -n "$ac_ct_OTOOL64"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_OTOOL64" >&5
+$as_echo "$ac_ct_OTOOL64" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+ if test "x$ac_ct_OTOOL64" = x; then
+ OTOOL64=":"
+ else
+ case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+ OTOOL64=$ac_ct_OTOOL64
+ fi
+else
+ OTOOL64="$ac_cv_prog_OTOOL64"
+fi
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for -single_module linker flag" >&5
+$as_echo_n "checking for -single_module linker flag... " >&6; }
+if test "${lt_cv_apple_cc_single_mod+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ lt_cv_apple_cc_single_mod=no
+ if test -z "${LT_MULTI_MODULE}"; then
+ # By default we will add the -single_module flag. You can override
+ # by either setting the environment variable LT_MULTI_MODULE
+ # non-empty at configure time, or by adding -multi_module to the
+ # link flags.
+ rm -rf libconftest.dylib*
+ echo "int foo(void){return 1;}" > conftest.c
+ echo "$LTCC $LTCFLAGS $LDFLAGS -o libconftest.dylib \
+-dynamiclib -Wl,-single_module conftest.c" >&5
+ $LTCC $LTCFLAGS $LDFLAGS -o libconftest.dylib \
+ -dynamiclib -Wl,-single_module conftest.c 2>conftest.err
+ _lt_result=$?
+ if test -f libconftest.dylib && test ! -s conftest.err && test $_lt_result = 0; then
+ lt_cv_apple_cc_single_mod=yes
+ else
+ cat conftest.err >&5
+ fi
+ rm -rf libconftest.dylib*
+ rm -f conftest.*
+ fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_apple_cc_single_mod" >&5
+$as_echo "$lt_cv_apple_cc_single_mod" >&6; }
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for -exported_symbols_list linker flag" >&5
+$as_echo_n "checking for -exported_symbols_list linker flag... " >&6; }
+if test "${lt_cv_ld_exported_symbols_list+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ lt_cv_ld_exported_symbols_list=no
+ save_LDFLAGS=$LDFLAGS
+ echo "_main" > conftest.sym
+ LDFLAGS="$LDFLAGS -Wl,-exported_symbols_list,conftest.sym"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+int
+main ()
+{
+
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+ lt_cv_ld_exported_symbols_list=yes
+else
+ lt_cv_ld_exported_symbols_list=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+ conftest$ac_exeext conftest.$ac_ext
+ LDFLAGS="$save_LDFLAGS"
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_ld_exported_symbols_list" >&5
+$as_echo "$lt_cv_ld_exported_symbols_list" >&6; }
+ case $host_os in
+ rhapsody* | darwin1.[012])
+ _lt_dar_allow_undefined='${wl}-undefined ${wl}suppress' ;;
+ darwin1.*)
+ _lt_dar_allow_undefined='${wl}-flat_namespace ${wl}-undefined ${wl}suppress' ;;
+ darwin*) # darwin 5.x on
+ # if running on 10.5 or later, the deployment target defaults
+ # to the OS version, if on x86, and 10.4, the deployment
+ # target defaults to 10.4. Don't you love it?
+ case ${MACOSX_DEPLOYMENT_TARGET-10.0},$host in
+ 10.0,*86*-darwin8*|10.0,*-darwin[91]*)
+ _lt_dar_allow_undefined='${wl}-undefined ${wl}dynamic_lookup' ;;
+ 10.[012]*)
+ _lt_dar_allow_undefined='${wl}-flat_namespace ${wl}-undefined ${wl}suppress' ;;
+ 10.*)
+ _lt_dar_allow_undefined='${wl}-undefined ${wl}dynamic_lookup' ;;
+ esac
+ ;;
+ esac
+ if test "$lt_cv_apple_cc_single_mod" = "yes"; then
+ _lt_dar_single_mod='$single_module'
+ fi
+ if test "$lt_cv_ld_exported_symbols_list" = "yes"; then
+ _lt_dar_export_syms=' ${wl}-exported_symbols_list,$output_objdir/${libname}-symbols.expsym'
+ else
+ _lt_dar_export_syms='~$NMEDIT -s $output_objdir/${libname}-symbols.expsym ${lib}'
+ fi
+ if test "$DSYMUTIL" != ":"; then
+ _lt_dsymutil='~$DSYMUTIL $lib || :'
+ else
+ _lt_dsymutil=
+ fi
+ ;;
+ esac
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for ANSI C header files" >&5
+$as_echo_n "checking for ANSI C header files... " >&6; }
+if test "${ac_cv_header_stdc+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+#include <float.h>
+
+int
+main ()
+{
+
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+ ac_cv_header_stdc=yes
+else
+ ac_cv_header_stdc=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+if test $ac_cv_header_stdc = yes; then
+ # SunOS 4.x string.h does not declare mem*, contrary to ANSI.
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+#include <string.h>
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+ $EGREP "memchr" >/dev/null 2>&1; then :
+
+else
+ ac_cv_header_stdc=no
+fi
+rm -f conftest*
+
+fi
+
+if test $ac_cv_header_stdc = yes; then
+ # ISC 2.0.2 stdlib.h does not declare free, contrary to ANSI.
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+#include <stdlib.h>
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+ $EGREP "free" >/dev/null 2>&1; then :
+
+else
+ ac_cv_header_stdc=no
+fi
+rm -f conftest*
+
+fi
+
+if test $ac_cv_header_stdc = yes; then
+ # /bin/cc in Irix-4.0.5 gets non-ANSI ctype macros unless using -ansi.
+ if test "$cross_compiling" = yes; then :
+ :
+else
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+#include <ctype.h>
+#include <stdlib.h>
+#if ((' ' & 0x0FF) == 0x020)
+# define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
+# define TOUPPER(c) (ISLOWER(c) ? 'A' + ((c) - 'a') : (c))
+#else
+# define ISLOWER(c) \
+ (('a' <= (c) && (c) <= 'i') \
+ || ('j' <= (c) && (c) <= 'r') \
+ || ('s' <= (c) && (c) <= 'z'))
+# define TOUPPER(c) (ISLOWER(c) ? ((c) | 0x40) : (c))
+#endif
+
+#define XOR(e, f) (((e) && !(f)) || (!(e) && (f)))
+int
+main ()
+{
+ int i;
+ for (i = 0; i < 256; i++)
+ if (XOR (islower (i), ISLOWER (i))
+ || toupper (i) != TOUPPER (i))
+ return 2;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"; then :
+
+else
+ ac_cv_header_stdc=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+ conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_header_stdc" >&5
+$as_echo "$ac_cv_header_stdc" >&6; }
+if test $ac_cv_header_stdc = yes; then
+
+$as_echo "#define STDC_HEADERS 1" >>confdefs.h
+
+fi
+
+# On IRIX 5.3, sys/types and inttypes.h are conflicting.
+for ac_header in sys/types.h sys/stat.h stdlib.h string.h memory.h strings.h \
+ inttypes.h stdint.h unistd.h
+do :
+ as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
+ac_fn_c_check_header_compile "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default
+"
+eval as_val=\$$as_ac_Header
+ if test "x$as_val" = x""yes; then :
+ cat >>confdefs.h <<_ACEOF
+#define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+
+done
+
+
+for ac_header in dlfcn.h
+do :
+ ac_fn_c_check_header_compile "$LINENO" "dlfcn.h" "ac_cv_header_dlfcn_h" "$ac_includes_default
+"
+if test "x$ac_cv_header_dlfcn_h" = x""yes; then :
+ cat >>confdefs.h <<_ACEOF
+#define HAVE_DLFCN_H 1
+_ACEOF
+
+fi
+
+done
+
+
+
+# Set options
+
+
+
+ enable_dlopen=no
+
+
+
+ # Check whether --enable-shared was given.
+if test "${enable_shared+set}" = set; then :
+ enableval=$enable_shared; p=${PACKAGE-default}
+ case $enableval in
+ yes) enable_shared=yes ;;
+ no) enable_shared=no ;;
+ *)
+ enable_shared=no
+ # Look at the argument we got. We use all the common list separators.
+ lt_save_ifs="$IFS"; IFS="${IFS}$PATH_SEPARATOR,"
+ for pkg in $enableval; do
+ IFS="$lt_save_ifs"
+ if test "X$pkg" = "X$p"; then
+ enable_shared=yes
+ fi
+ done
+ IFS="$lt_save_ifs"
+ ;;
+ esac
+else
+ enable_shared=yes
+fi
+
+
+
+
+
+
+
+
+
+ # Check whether --enable-static was given.
+if test "${enable_static+set}" = set; then :
+ enableval=$enable_static; p=${PACKAGE-default}
+ case $enableval in
+ yes) enable_static=yes ;;
+ no) enable_static=no ;;
+ *)
+ enable_static=no
+ # Look at the argument we got. We use all the common list separators.
+ lt_save_ifs="$IFS"; IFS="${IFS}$PATH_SEPARATOR,"
+ for pkg in $enableval; do
+ IFS="$lt_save_ifs"
+ if test "X$pkg" = "X$p"; then
+ enable_static=yes
+ fi
+ done
+ IFS="$lt_save_ifs"
+ ;;
+ esac
+else
+ enable_static=yes
+fi
+
+
+
+
+
+
+
+
+
+
+# Check whether --with-pic was given.
+if test "${with_pic+set}" = set; then :
+ withval=$with_pic; pic_mode="$withval"
+else
+ pic_mode=default
+fi
+
+
+test -z "$pic_mode" && pic_mode=default
+
+
+
+
+
+
+
+ # Check whether --enable-fast-install was given.
+if test "${enable_fast_install+set}" = set; then :
+ enableval=$enable_fast_install; p=${PACKAGE-default}
+ case $enableval in
+ yes) enable_fast_install=yes ;;
+ no) enable_fast_install=no ;;
+ *)
+ enable_fast_install=no
+ # Look at the argument we got. We use all the common list separators.
+ lt_save_ifs="$IFS"; IFS="${IFS}$PATH_SEPARATOR,"
+ for pkg in $enableval; do
+ IFS="$lt_save_ifs"
+ if test "X$pkg" = "X$p"; then
+ enable_fast_install=yes
+ fi
+ done
+ IFS="$lt_save_ifs"
+ ;;
+ esac
+else
+ enable_fast_install=yes
+fi
+
+
+
+
+
+
+
+
+
+
+
+# This can be used to rebuild libtool when needed
+LIBTOOL_DEPS="$ltmain"
+
+# Always use our own libtool.
+LIBTOOL='$(SHELL) $(top_builddir)/libtool'
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+test -z "$LN_S" && LN_S="ln -s"
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+if test -n "${ZSH_VERSION+set}" ; then
+ setopt NO_GLOB_SUBST
+fi
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for objdir" >&5
+$as_echo_n "checking for objdir... " >&6; }
+if test "${lt_cv_objdir+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ rm -f .libs 2>/dev/null
+mkdir .libs 2>/dev/null
+if test -d .libs; then
+ lt_cv_objdir=.libs
+else
+ # MS-DOS does not allow filenames that begin with a dot.
+ lt_cv_objdir=_libs
+fi
+rmdir .libs 2>/dev/null
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_objdir" >&5
+$as_echo "$lt_cv_objdir" >&6; }
+objdir=$lt_cv_objdir
+
+
+
+
+
+cat >>confdefs.h <<_ACEOF
+#define LT_OBJDIR "$lt_cv_objdir/"
+_ACEOF
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+case $host_os in
+aix3*)
+ # AIX sometimes has problems with the GCC collect2 program. For some
+ # reason, if we set the COLLECT_NAMES environment variable, the problems
+ # vanish in a puff of smoke.
+ if test "X${COLLECT_NAMES+set}" != Xset; then
+ COLLECT_NAMES=
+ export COLLECT_NAMES
+ fi
+ ;;
+esac
+
+# Sed substitution that helps us do robust quoting. It backslashifies
+# metacharacters that are still active within double-quoted strings.
+sed_quote_subst='s/\(["`$\\]\)/\\\1/g'
+
+# Same as above, but do not quote variable references.
+double_quote_subst='s/\(["`\\]\)/\\\1/g'
+
+# Sed substitution to delay expansion of an escaped shell variable in a
+# double_quote_subst'ed string.
+delay_variable_subst='s/\\\\\\\\\\\$/\\\\\\$/g'
+
+# Sed substitution to delay expansion of an escaped single quote.
+delay_single_quote_subst='s/'\''/'\'\\\\\\\'\''/g'
+
+# Sed substitution to avoid accidental globbing in evaled expressions
+no_glob_subst='s/\*/\\\*/g'
+
+# Global variables:
+ofile=libtool
+can_build_shared=yes
+
+# All known linkers require a `.a' archive for static linking (except MSVC,
+# which needs '.lib').
+libext=a
+
+with_gnu_ld="$lt_cv_prog_gnu_ld"
+
+old_CC="$CC"
+old_CFLAGS="$CFLAGS"
+
+# Set sane defaults for various variables
+test -z "$CC" && CC=cc
+test -z "$LTCC" && LTCC=$CC
+test -z "$LTCFLAGS" && LTCFLAGS=$CFLAGS
+test -z "$LD" && LD=ld
+test -z "$ac_objext" && ac_objext=o
+
+for cc_temp in $compiler""; do
+ case $cc_temp in
+ compile | *[\\/]compile | ccache | *[\\/]ccache ) ;;
+ distcc | *[\\/]distcc | purify | *[\\/]purify ) ;;
+ \-*) ;;
+ *) break;;
+ esac
+done
+cc_basename=`$ECHO "X$cc_temp" | $Xsed -e 's%.*/%%' -e "s%^$host_alias-%%"`
+
+
+# Only perform the check for file, if the check method requires it
+test -z "$MAGIC_CMD" && MAGIC_CMD=file
+case $deplibs_check_method in
+file_magic*)
+ if test "$file_magic_cmd" = '$MAGIC_CMD'; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for ${ac_tool_prefix}file" >&5
+$as_echo_n "checking for ${ac_tool_prefix}file... " >&6; }
+if test "${lt_cv_path_MAGIC_CMD+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ case $MAGIC_CMD in
+[\\/*] | ?:[\\/]*)
+ lt_cv_path_MAGIC_CMD="$MAGIC_CMD" # Let the user override the test with a path.
+ ;;
+*)
+ lt_save_MAGIC_CMD="$MAGIC_CMD"
+ lt_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
+ ac_dummy="/usr/bin$PATH_SEPARATOR$PATH"
+ for ac_dir in $ac_dummy; do
+ IFS="$lt_save_ifs"
+ test -z "$ac_dir" && ac_dir=.
+ if test -f $ac_dir/${ac_tool_prefix}file; then
+ lt_cv_path_MAGIC_CMD="$ac_dir/${ac_tool_prefix}file"
+ if test -n "$file_magic_test_file"; then
+ case $deplibs_check_method in
+ "file_magic "*)
+ file_magic_regex=`expr "$deplibs_check_method" : "file_magic \(.*\)"`
+ MAGIC_CMD="$lt_cv_path_MAGIC_CMD"
+ if eval $file_magic_cmd \$file_magic_test_file 2> /dev/null |
+ $EGREP "$file_magic_regex" > /dev/null; then
+ :
+ else
+ cat <<_LT_EOF 1>&2
+
+*** Warning: the command libtool uses to detect shared libraries,
+*** $file_magic_cmd, produces output that libtool cannot recognize.
+*** The result is that libtool may fail to recognize shared libraries
+*** as such. This will affect the creation of libtool libraries that
+*** depend on shared libraries, but programs linked with such libtool
+*** libraries will work regardless of this problem. Nevertheless, you
+*** may want to report the problem to your system manager and/or to
+*** bug-libtool@gnu.org
+
+_LT_EOF
+ fi ;;
+ esac
+ fi
+ break
+ fi
+ done
+ IFS="$lt_save_ifs"
+ MAGIC_CMD="$lt_save_MAGIC_CMD"
+ ;;
+esac
+fi
+
+MAGIC_CMD="$lt_cv_path_MAGIC_CMD"
+if test -n "$MAGIC_CMD"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $MAGIC_CMD" >&5
+$as_echo "$MAGIC_CMD" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+
+
+
+if test -z "$lt_cv_path_MAGIC_CMD"; then
+ if test -n "$ac_tool_prefix"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for file" >&5
+$as_echo_n "checking for file... " >&6; }
+if test "${lt_cv_path_MAGIC_CMD+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ case $MAGIC_CMD in
+[\\/*] | ?:[\\/]*)
+ lt_cv_path_MAGIC_CMD="$MAGIC_CMD" # Let the user override the test with a path.
+ ;;
+*)
+ lt_save_MAGIC_CMD="$MAGIC_CMD"
+ lt_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
+ ac_dummy="/usr/bin$PATH_SEPARATOR$PATH"
+ for ac_dir in $ac_dummy; do
+ IFS="$lt_save_ifs"
+ test -z "$ac_dir" && ac_dir=.
+ if test -f $ac_dir/file; then
+ lt_cv_path_MAGIC_CMD="$ac_dir/file"
+ if test -n "$file_magic_test_file"; then
+ case $deplibs_check_method in
+ "file_magic "*)
+ file_magic_regex=`expr "$deplibs_check_method" : "file_magic \(.*\)"`
+ MAGIC_CMD="$lt_cv_path_MAGIC_CMD"
+ if eval $file_magic_cmd \$file_magic_test_file 2> /dev/null |
+ $EGREP "$file_magic_regex" > /dev/null; then
+ :
+ else
+ cat <<_LT_EOF 1>&2
+
+*** Warning: the command libtool uses to detect shared libraries,
+*** $file_magic_cmd, produces output that libtool cannot recognize.
+*** The result is that libtool may fail to recognize shared libraries
+*** as such. This will affect the creation of libtool libraries that
+*** depend on shared libraries, but programs linked with such libtool
+*** libraries will work regardless of this problem. Nevertheless, you
+*** may want to report the problem to your system manager and/or to
+*** bug-libtool@gnu.org
+
+_LT_EOF
+ fi ;;
+ esac
+ fi
+ break
+ fi
+ done
+ IFS="$lt_save_ifs"
+ MAGIC_CMD="$lt_save_MAGIC_CMD"
+ ;;
+esac
+fi
+
+MAGIC_CMD="$lt_cv_path_MAGIC_CMD"
+if test -n "$MAGIC_CMD"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $MAGIC_CMD" >&5
+$as_echo "$MAGIC_CMD" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+ else
+ MAGIC_CMD=:
+ fi
+fi
+
+ fi
+ ;;
+esac
+
+# Use C for the default configuration in the libtool script
+
+lt_save_CC="$CC"
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+# Source file extension for C test sources.
+ac_ext=c
+
+# Object file extension for compiled C test sources.
+objext=o
+objext=$objext
+
+# Code to be used in simple compile tests
+lt_simple_compile_test_code="int some_variable = 0;"
+
+# Code to be used in simple link tests
+lt_simple_link_test_code='int main(){return(0);}'
+
+
+
+
+
+
+
+# If no C compiler was specified, use CC.
+LTCC=${LTCC-"$CC"}
+
+# If no C compiler flags were specified, use CFLAGS.
+LTCFLAGS=${LTCFLAGS-"$CFLAGS"}
+
+# Allow CC to be a program name with arguments.
+compiler=$CC
+
+# Save the default compiler, since it gets overwritten when the other
+# tags are being tested, and _LT_TAGVAR(compiler, []) is a NOP.
+compiler_DEFAULT=$CC
+
+# save warnings/boilerplate of simple test code
+ac_outfile=conftest.$ac_objext
+echo "$lt_simple_compile_test_code" >conftest.$ac_ext
+eval "$ac_compile" 2>&1 >/dev/null | $SED '/^$/d; /^ *+/d' >conftest.err
+_lt_compiler_boilerplate=`cat conftest.err`
+$RM conftest*
+
+ac_outfile=conftest.$ac_objext
+echo "$lt_simple_link_test_code" >conftest.$ac_ext
+eval "$ac_link" 2>&1 >/dev/null | $SED '/^$/d; /^ *+/d' >conftest.err
+_lt_linker_boilerplate=`cat conftest.err`
+$RM -r conftest*
+
+
+if test -n "$compiler"; then
+
+lt_prog_compiler_no_builtin_flag=
+
+if test "$GCC" = yes; then
+ lt_prog_compiler_no_builtin_flag=' -fno-builtin'
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking if $compiler supports -fno-rtti -fno-exceptions" >&5
+$as_echo_n "checking if $compiler supports -fno-rtti -fno-exceptions... " >&6; }
+if test "${lt_cv_prog_compiler_rtti_exceptions+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ lt_cv_prog_compiler_rtti_exceptions=no
+ ac_outfile=conftest.$ac_objext
+ echo "$lt_simple_compile_test_code" > conftest.$ac_ext
+ lt_compiler_flag="-fno-rtti -fno-exceptions"
+ # Insert the option either (1) after the last *FLAGS variable, or
+ # (2) before a word containing "conftest.", or (3) at the end.
+ # Note that $ac_compile itself does not contain backslashes and begins
+ # with a dollar sign (not a hyphen), so the echo should work correctly.
+ # The option is referenced via a variable to avoid confusing sed.
+ lt_compile=`echo "$ac_compile" | $SED \
+ -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
+ -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
+ -e 's:$: $lt_compiler_flag:'`
+ (eval echo "\"\$as_me:7738: $lt_compile\"" >&5)
+ (eval "$lt_compile" 2>conftest.err)
+ ac_status=$?
+ cat conftest.err >&5
+ echo "$as_me:7742: \$? = $ac_status" >&5
+ if (exit $ac_status) && test -s "$ac_outfile"; then
+ # The compiler can only warn and ignore the option if not recognized
+ # So say no if there are warnings other than the usual output.
+ $ECHO "X$_lt_compiler_boilerplate" | $Xsed -e '/^$/d' >conftest.exp
+ $SED '/^$/d; /^ *+/d' conftest.err >conftest.er2
+ if test ! -s conftest.er2 || diff conftest.exp conftest.er2 >/dev/null; then
+ lt_cv_prog_compiler_rtti_exceptions=yes
+ fi
+ fi
+ $RM conftest*
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_prog_compiler_rtti_exceptions" >&5
+$as_echo "$lt_cv_prog_compiler_rtti_exceptions" >&6; }
+
+if test x"$lt_cv_prog_compiler_rtti_exceptions" = xyes; then
+ lt_prog_compiler_no_builtin_flag="$lt_prog_compiler_no_builtin_flag -fno-rtti -fno-exceptions"
+else
+ :
+fi
+
+fi
+
+
+
+
+
+
+ lt_prog_compiler_wl=
+lt_prog_compiler_pic=
+lt_prog_compiler_static=
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $compiler option to produce PIC" >&5
+$as_echo_n "checking for $compiler option to produce PIC... " >&6; }
+
+ if test "$GCC" = yes; then
+ lt_prog_compiler_wl='-Wl,'
+ lt_prog_compiler_static='-static'
+
+ case $host_os in
+ aix*)
+ # All AIX code is PIC.
+ if test "$host_cpu" = ia64; then
+ # AIX 5 now supports IA64 processor
+ lt_prog_compiler_static='-Bstatic'
+ fi
+ ;;
+
+ amigaos*)
+ case $host_cpu in
+ powerpc)
+ # see comment about AmigaOS4 .so support
+ lt_prog_compiler_pic='-fPIC'
+ ;;
+ m68k)
+ # FIXME: we need at least 68020 code to build shared libraries, but
+ # adding the `-m68020' flag to GCC prevents building anything better,
+ # like `-m68040'.
+ lt_prog_compiler_pic='-m68020 -resident32 -malways-restore-a4'
+ ;;
+ esac
+ ;;
+
+ beos* | irix5* | irix6* | nonstopux* | osf3* | osf4* | osf5*)
+ # PIC is the default for these OSes.
+ ;;
+
+ mingw* | cygwin* | pw32* | os2* | cegcc*)
+ # This hack is so that the source file can tell whether it is being
+ # built for inclusion in a dll (and should export symbols for example).
+ # Although the cygwin gcc ignores -fPIC, still need this for old-style
+ # (--disable-auto-import) libraries
+ lt_prog_compiler_pic='-DDLL_EXPORT'
+ ;;
+
+ darwin* | rhapsody*)
+ # PIC is the default on this platform
+ # Common symbols not allowed in MH_DYLIB files
+ lt_prog_compiler_pic='-fno-common'
+ ;;
+
+ hpux*)
+ # PIC is the default for 64-bit PA HP-UX, but not for 32-bit
+ # PA HP-UX. On IA64 HP-UX, PIC is the default but the pic flag
+ # sets the default TLS model and affects inlining.
+ case $host_cpu in
+ hppa*64*)
+ # +Z the default
+ ;;
+ *)
+ lt_prog_compiler_pic='-fPIC'
+ ;;
+ esac
+ ;;
+
+ interix[3-9]*)
+ # Interix 3.x gcc -fpic/-fPIC options generate broken code.
+ # Instead, we relocate shared libraries at runtime.
+ ;;
+
+ msdosdjgpp*)
+ # Just because we use GCC doesn't mean we suddenly get shared libraries
+ # on systems that don't support them.
+ lt_prog_compiler_can_build_shared=no
+ enable_shared=no
+ ;;
+
+ *nto* | *qnx*)
+ # QNX uses GNU C++, but need to define -shared option too, otherwise
+ # it will coredump.
+ lt_prog_compiler_pic='-fPIC -shared'
+ ;;
+
+ sysv4*MP*)
+ if test -d /usr/nec; then
+ lt_prog_compiler_pic=-Kconform_pic
+ fi
+ ;;
+
+ *)
+ lt_prog_compiler_pic='-fPIC'
+ ;;
+ esac
+ else
+ # PORTME Check for flag to pass linker flags through the system compiler.
+ case $host_os in
+ aix*)
+ lt_prog_compiler_wl='-Wl,'
+ if test "$host_cpu" = ia64; then
+ # AIX 5 now supports IA64 processor
+ lt_prog_compiler_static='-Bstatic'
+ else
+ lt_prog_compiler_static='-bnso -bI:/lib/syscalls.exp'
+ fi
+ ;;
+
+ mingw* | cygwin* | pw32* | os2* | cegcc*)
+ # This hack is so that the source file can tell whether it is being
+ # built for inclusion in a dll (and should export symbols for example).
+ lt_prog_compiler_pic='-DDLL_EXPORT'
+ ;;
+
+ hpux9* | hpux10* | hpux11*)
+ lt_prog_compiler_wl='-Wl,'
+ # PIC is the default for IA64 HP-UX and 64-bit HP-UX, but
+ # not for PA HP-UX.
+ case $host_cpu in
+ hppa*64*|ia64*)
+ # +Z the default
+ ;;
+ *)
+ lt_prog_compiler_pic='+Z'
+ ;;
+ esac
+ # Is there a better lt_prog_compiler_static that works with the bundled CC?
+ lt_prog_compiler_static='${wl}-a ${wl}archive'
+ ;;
+
+ irix5* | irix6* | nonstopux*)
+ lt_prog_compiler_wl='-Wl,'
+ # PIC (with -KPIC) is the default.
+ lt_prog_compiler_static='-non_shared'
+ ;;
+
+ linux* | k*bsd*-gnu)
+ case $cc_basename in
+ # old Intel for x86_64 which still supported -KPIC.
+ ecc*)
+ lt_prog_compiler_wl='-Wl,'
+ lt_prog_compiler_pic='-KPIC'
+ lt_prog_compiler_static='-static'
+ ;;
+ # icc used to be incompatible with GCC.
+ # ICC 10 doesn't accept -KPIC any more.
+ icc* | ifort*)
+ lt_prog_compiler_wl='-Wl,'
+ lt_prog_compiler_pic='-fPIC'
+ lt_prog_compiler_static='-static'
+ ;;
+ # Lahey Fortran 8.1.
+ lf95*)
+ lt_prog_compiler_wl='-Wl,'
+ lt_prog_compiler_pic='--shared'
+ lt_prog_compiler_static='--static'
+ ;;
+ pgcc* | pgf77* | pgf90* | pgf95*)
+ # Portland Group compilers (*not* the Pentium gcc compiler,
+ # which looks to be a dead project)
+ lt_prog_compiler_wl='-Wl,'
+ lt_prog_compiler_pic='-fpic'
+ lt_prog_compiler_static='-Bstatic'
+ ;;
+ ccc*)
+ lt_prog_compiler_wl='-Wl,'
+ # All Alpha code is PIC.
+ lt_prog_compiler_static='-non_shared'
+ ;;
+ xl*)
+ # IBM XL C 8.0/Fortran 10.1 on PPC
+ lt_prog_compiler_wl='-Wl,'
+ lt_prog_compiler_pic='-qpic'
+ lt_prog_compiler_static='-qstaticlink'
+ ;;
+ *)
+ case `$CC -V 2>&1 | sed 5q` in
+ *Sun\ C*)
+ # Sun C 5.9
+ lt_prog_compiler_pic='-KPIC'
+ lt_prog_compiler_static='-Bstatic'
+ lt_prog_compiler_wl='-Wl,'
+ ;;
+ *Sun\ F*)
+ # Sun Fortran 8.3 passes all unrecognized flags to the linker
+ lt_prog_compiler_pic='-KPIC'
+ lt_prog_compiler_static='-Bstatic'
+ lt_prog_compiler_wl=''
+ ;;
+ esac
+ ;;
+ esac
+ ;;
+
+ newsos6)
+ lt_prog_compiler_pic='-KPIC'
+ lt_prog_compiler_static='-Bstatic'
+ ;;
+
+ *nto* | *qnx*)
+ # QNX uses GNU C++, but need to define -shared option too, otherwise
+ # it will coredump.
+ lt_prog_compiler_pic='-fPIC -shared'
+ ;;
+
+ osf3* | osf4* | osf5*)
+ lt_prog_compiler_wl='-Wl,'
+ # All OSF/1 code is PIC.
+ lt_prog_compiler_static='-non_shared'
+ ;;
+
+ rdos*)
+ lt_prog_compiler_static='-non_shared'
+ ;;
+
+ solaris*)
+ lt_prog_compiler_pic='-KPIC'
+ lt_prog_compiler_static='-Bstatic'
+ case $cc_basename in
+ f77* | f90* | f95*)
+ lt_prog_compiler_wl='-Qoption ld ';;
+ *)
+ lt_prog_compiler_wl='-Wl,';;
+ esac
+ ;;
+
+ sunos4*)
+ lt_prog_compiler_wl='-Qoption ld '
+ lt_prog_compiler_pic='-PIC'
+ lt_prog_compiler_static='-Bstatic'
+ ;;
+
+ sysv4 | sysv4.2uw2* | sysv4.3*)
+ lt_prog_compiler_wl='-Wl,'
+ lt_prog_compiler_pic='-KPIC'
+ lt_prog_compiler_static='-Bstatic'
+ ;;
+
+ sysv4*MP*)
+ if test -d /usr/nec ;then
+ lt_prog_compiler_pic='-Kconform_pic'
+ lt_prog_compiler_static='-Bstatic'
+ fi
+ ;;
+
+ sysv5* | unixware* | sco3.2v5* | sco5v6* | OpenUNIX*)
+ lt_prog_compiler_wl='-Wl,'
+ lt_prog_compiler_pic='-KPIC'
+ lt_prog_compiler_static='-Bstatic'
+ ;;
+
+ unicos*)
+ lt_prog_compiler_wl='-Wl,'
+ lt_prog_compiler_can_build_shared=no
+ ;;
+
+ uts4*)
+ lt_prog_compiler_pic='-pic'
+ lt_prog_compiler_static='-Bstatic'
+ ;;
+
+ *)
+ lt_prog_compiler_can_build_shared=no
+ ;;
+ esac
+ fi
+
+case $host_os in
+ # For platforms which do not support PIC, -DPIC is meaningless:
+ *djgpp*)
+ lt_prog_compiler_pic=
+ ;;
+ *)
+ lt_prog_compiler_pic="$lt_prog_compiler_pic -DPIC"
+ ;;
+esac
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_prog_compiler_pic" >&5
+$as_echo "$lt_prog_compiler_pic" >&6; }
+
+
+
+
+
+
+#
+# Check to make sure the PIC flag actually works.
+#
+if test -n "$lt_prog_compiler_pic"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking if $compiler PIC flag $lt_prog_compiler_pic works" >&5
+$as_echo_n "checking if $compiler PIC flag $lt_prog_compiler_pic works... " >&6; }
+if test "${lt_cv_prog_compiler_pic_works+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ lt_cv_prog_compiler_pic_works=no
+ ac_outfile=conftest.$ac_objext
+ echo "$lt_simple_compile_test_code" > conftest.$ac_ext
+ lt_compiler_flag="$lt_prog_compiler_pic -DPIC"
+ # Insert the option either (1) after the last *FLAGS variable, or
+ # (2) before a word containing "conftest.", or (3) at the end.
+ # Note that $ac_compile itself does not contain backslashes and begins
+ # with a dollar sign (not a hyphen), so the echo should work correctly.
+ # The option is referenced via a variable to avoid confusing sed.
+ lt_compile=`echo "$ac_compile" | $SED \
+ -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
+ -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
+ -e 's:$: $lt_compiler_flag:'`
+ (eval echo "\"\$as_me:8077: $lt_compile\"" >&5)
+ (eval "$lt_compile" 2>conftest.err)
+ ac_status=$?
+ cat conftest.err >&5
+ echo "$as_me:8081: \$? = $ac_status" >&5
+ if (exit $ac_status) && test -s "$ac_outfile"; then
+ # The compiler can only warn and ignore the option if not recognized
+ # So say no if there are warnings other than the usual output.
+ $ECHO "X$_lt_compiler_boilerplate" | $Xsed -e '/^$/d' >conftest.exp
+ $SED '/^$/d; /^ *+/d' conftest.err >conftest.er2
+ if test ! -s conftest.er2 || diff conftest.exp conftest.er2 >/dev/null; then
+ lt_cv_prog_compiler_pic_works=yes
+ fi
+ fi
+ $RM conftest*
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_prog_compiler_pic_works" >&5
+$as_echo "$lt_cv_prog_compiler_pic_works" >&6; }
+
+if test x"$lt_cv_prog_compiler_pic_works" = xyes; then
+ case $lt_prog_compiler_pic in
+ "" | " "*) ;;
+ *) lt_prog_compiler_pic=" $lt_prog_compiler_pic" ;;
+ esac
+else
+ lt_prog_compiler_pic=
+ lt_prog_compiler_can_build_shared=no
+fi
+
+fi
+
+
+
+
+
+
+#
+# Check to make sure the static flag actually works.
+#
+wl=$lt_prog_compiler_wl eval lt_tmp_static_flag=\"$lt_prog_compiler_static\"
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if $compiler static flag $lt_tmp_static_flag works" >&5
+$as_echo_n "checking if $compiler static flag $lt_tmp_static_flag works... " >&6; }
+if test "${lt_cv_prog_compiler_static_works+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ lt_cv_prog_compiler_static_works=no
+ save_LDFLAGS="$LDFLAGS"
+ LDFLAGS="$LDFLAGS $lt_tmp_static_flag"
+ echo "$lt_simple_link_test_code" > conftest.$ac_ext
+ if (eval $ac_link 2>conftest.err) && test -s conftest$ac_exeext; then
+ # The linker can only warn and ignore the option if not recognized
+ # So say no if there are warnings
+ if test -s conftest.err; then
+ # Append any errors to the config.log.
+ cat conftest.err 1>&5
+ $ECHO "X$_lt_linker_boilerplate" | $Xsed -e '/^$/d' > conftest.exp
+ $SED '/^$/d; /^ *+/d' conftest.err >conftest.er2
+ if diff conftest.exp conftest.er2 >/dev/null; then
+ lt_cv_prog_compiler_static_works=yes
+ fi
+ else
+ lt_cv_prog_compiler_static_works=yes
+ fi
+ fi
+ $RM -r conftest*
+ LDFLAGS="$save_LDFLAGS"
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_prog_compiler_static_works" >&5
+$as_echo "$lt_cv_prog_compiler_static_works" >&6; }
+
+if test x"$lt_cv_prog_compiler_static_works" = xyes; then
+ :
+else
+ lt_prog_compiler_static=
+fi
+
+
+
+
+
+
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking if $compiler supports -c -o file.$ac_objext" >&5
+$as_echo_n "checking if $compiler supports -c -o file.$ac_objext... " >&6; }
+if test "${lt_cv_prog_compiler_c_o+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ lt_cv_prog_compiler_c_o=no
+ $RM -r conftest 2>/dev/null
+ mkdir conftest
+ cd conftest
+ mkdir out
+ echo "$lt_simple_compile_test_code" > conftest.$ac_ext
+
+ lt_compiler_flag="-o out/conftest2.$ac_objext"
+ # Insert the option either (1) after the last *FLAGS variable, or
+ # (2) before a word containing "conftest.", or (3) at the end.
+ # Note that $ac_compile itself does not contain backslashes and begins
+ # with a dollar sign (not a hyphen), so the echo should work correctly.
+ lt_compile=`echo "$ac_compile" | $SED \
+ -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
+ -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
+ -e 's:$: $lt_compiler_flag:'`
+ (eval echo "\"\$as_me:8182: $lt_compile\"" >&5)
+ (eval "$lt_compile" 2>out/conftest.err)
+ ac_status=$?
+ cat out/conftest.err >&5
+ echo "$as_me:8186: \$? = $ac_status" >&5
+ if (exit $ac_status) && test -s out/conftest2.$ac_objext
+ then
+ # The compiler can only warn and ignore the option if not recognized
+ # So say no if there are warnings
+ $ECHO "X$_lt_compiler_boilerplate" | $Xsed -e '/^$/d' > out/conftest.exp
+ $SED '/^$/d; /^ *+/d' out/conftest.err >out/conftest.er2
+ if test ! -s out/conftest.er2 || diff out/conftest.exp out/conftest.er2 >/dev/null; then
+ lt_cv_prog_compiler_c_o=yes
+ fi
+ fi
+ chmod u+w . 2>&5
+ $RM conftest*
+ # SGI C++ compiler will create directory out/ii_files/ for
+ # template instantiation
+ test -d out/ii_files && $RM out/ii_files/* && rmdir out/ii_files
+ $RM out/* && rmdir out
+ cd ..
+ $RM -r conftest
+ $RM conftest*
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_prog_compiler_c_o" >&5
+$as_echo "$lt_cv_prog_compiler_c_o" >&6; }
+
+
+
+
+
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking if $compiler supports -c -o file.$ac_objext" >&5
+$as_echo_n "checking if $compiler supports -c -o file.$ac_objext... " >&6; }
+if test "${lt_cv_prog_compiler_c_o+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ lt_cv_prog_compiler_c_o=no
+ $RM -r conftest 2>/dev/null
+ mkdir conftest
+ cd conftest
+ mkdir out
+ echo "$lt_simple_compile_test_code" > conftest.$ac_ext
+
+ lt_compiler_flag="-o out/conftest2.$ac_objext"
+ # Insert the option either (1) after the last *FLAGS variable, or
+ # (2) before a word containing "conftest.", or (3) at the end.
+ # Note that $ac_compile itself does not contain backslashes and begins
+ # with a dollar sign (not a hyphen), so the echo should work correctly.
+ lt_compile=`echo "$ac_compile" | $SED \
+ -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
+ -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
+ -e 's:$: $lt_compiler_flag:'`
+ (eval echo "\"\$as_me:8237: $lt_compile\"" >&5)
+ (eval "$lt_compile" 2>out/conftest.err)
+ ac_status=$?
+ cat out/conftest.err >&5
+ echo "$as_me:8241: \$? = $ac_status" >&5
+ if (exit $ac_status) && test -s out/conftest2.$ac_objext
+ then
+ # The compiler can only warn and ignore the option if not recognized
+ # So say no if there are warnings
+ $ECHO "X$_lt_compiler_boilerplate" | $Xsed -e '/^$/d' > out/conftest.exp
+ $SED '/^$/d; /^ *+/d' out/conftest.err >out/conftest.er2
+ if test ! -s out/conftest.er2 || diff out/conftest.exp out/conftest.er2 >/dev/null; then
+ lt_cv_prog_compiler_c_o=yes
+ fi
+ fi
+ chmod u+w . 2>&5
+ $RM conftest*
+ # SGI C++ compiler will create directory out/ii_files/ for
+ # template instantiation
+ test -d out/ii_files && $RM out/ii_files/* && rmdir out/ii_files
+ $RM out/* && rmdir out
+ cd ..
+ $RM -r conftest
+ $RM conftest*
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_prog_compiler_c_o" >&5
+$as_echo "$lt_cv_prog_compiler_c_o" >&6; }
+
+
+
+
+hard_links="nottested"
+if test "$lt_cv_prog_compiler_c_o" = no && test "$need_locks" != no; then
+ # do not overwrite the value of need_locks provided by the user
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking if we can lock with hard links" >&5
+$as_echo_n "checking if we can lock with hard links... " >&6; }
+ hard_links=yes
+ $RM conftest*
+ ln conftest.a conftest.b 2>/dev/null && hard_links=no
+ touch conftest.a
+ ln conftest.a conftest.b 2>&5 || hard_links=no
+ ln conftest.a conftest.b 2>/dev/null && hard_links=no
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $hard_links" >&5
+$as_echo "$hard_links" >&6; }
+ if test "$hard_links" = no; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: \`$CC' does not support \`-c -o', so \`make -j' may be unsafe" >&5
+$as_echo "$as_me: WARNING: \`$CC' does not support \`-c -o', so \`make -j' may be unsafe" >&2;}
+ need_locks=warn
+ fi
+else
+ need_locks=no
+fi
+
+
+
+
+
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the $compiler linker ($LD) supports shared libraries" >&5
+$as_echo_n "checking whether the $compiler linker ($LD) supports shared libraries... " >&6; }
+
+ runpath_var=
+ allow_undefined_flag=
+ always_export_symbols=no
+ archive_cmds=
+ archive_expsym_cmds=
+ compiler_needs_object=no
+ enable_shared_with_static_runtimes=no
+ export_dynamic_flag_spec=
+ export_symbols_cmds='$NM $libobjs $convenience | $global_symbol_pipe | $SED '\''s/.* //'\'' | sort | uniq > $export_symbols'
+ hardcode_automatic=no
+ hardcode_direct=no
+ hardcode_direct_absolute=no
+ hardcode_libdir_flag_spec=
+ hardcode_libdir_flag_spec_ld=
+ hardcode_libdir_separator=
+ hardcode_minus_L=no
+ hardcode_shlibpath_var=unsupported
+ inherit_rpath=no
+ link_all_deplibs=unknown
+ module_cmds=
+ module_expsym_cmds=
+ old_archive_from_new_cmds=
+ old_archive_from_expsyms_cmds=
+ thread_safe_flag_spec=
+ whole_archive_flag_spec=
+ # include_expsyms should be a list of space-separated symbols to be *always*
+ # included in the symbol list
+ include_expsyms=
+ # exclude_expsyms can be an extended regexp of symbols to exclude
+ # it will be wrapped by ` (' and `)$', so one must not match beginning or
+ # end of line. Example: `a|bc|.*d.*' will exclude the symbols `a' and `bc',
+ # as well as any symbol that contains `d'.
+ exclude_expsyms='_GLOBAL_OFFSET_TABLE_|_GLOBAL__F[ID]_.*'
+ # Although _GLOBAL_OFFSET_TABLE_ is a valid symbol C name, most a.out
+ # platforms (ab)use it in PIC code, but their linkers get confused if
+ # the symbol is explicitly referenced. Since portable code cannot
+ # rely on this symbol name, it's probably fine to never include it in
+ # preloaded symbol tables.
+ # Exclude shared library initialization/finalization symbols.
+ extract_expsyms_cmds=
+
+ case $host_os in
+ cygwin* | mingw* | pw32* | cegcc*)
+ # FIXME: the MSVC++ port hasn't been tested in a loooong time
+ # When not using gcc, we currently assume that we are using
+ # Microsoft Visual C++.
+ if test "$GCC" != yes; then
+ with_gnu_ld=no
+ fi
+ ;;
+ interix*)
+ # we just hope/assume this is gcc and not c89 (= MSVC++)
+ with_gnu_ld=yes
+ ;;
+ openbsd*)
+ with_gnu_ld=no
+ ;;
+ esac
+
+ ld_shlibs=yes
+ if test "$with_gnu_ld" = yes; then
+ # If archive_cmds runs LD, not CC, wlarc should be empty
+ wlarc='${wl}'
+
+ # Set some defaults for GNU ld with shared library support. These
+ # are reset later if shared libraries are not supported. Putting them
+ # here allows them to be overridden if necessary.
+ runpath_var=LD_RUN_PATH
+ hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+ export_dynamic_flag_spec='${wl}--export-dynamic'
+ # ancient GNU ld didn't support --whole-archive et. al.
+ if $LD --help 2>&1 | $GREP 'no-whole-archive' > /dev/null; then
+ whole_archive_flag_spec="$wlarc"'--whole-archive$convenience '"$wlarc"'--no-whole-archive'
+ else
+ whole_archive_flag_spec=
+ fi
+ supports_anon_versioning=no
+ case `$LD -v 2>&1` in
+ *\ [01].* | *\ 2.[0-9].* | *\ 2.10.*) ;; # catch versions < 2.11
+ *\ 2.11.93.0.2\ *) supports_anon_versioning=yes ;; # RH7.3 ...
+ *\ 2.11.92.0.12\ *) supports_anon_versioning=yes ;; # Mandrake 8.2 ...
+ *\ 2.11.*) ;; # other 2.11 versions
+ *) supports_anon_versioning=yes ;;
+ esac
+
+ # See if GNU ld supports shared libraries.
+ case $host_os in
+ aix[3-9]*)
+ # On AIX/PPC, the GNU linker is very broken
+ if test "$host_cpu" != ia64; then
+ ld_shlibs=no
+ cat <<_LT_EOF 1>&2
+
+*** Warning: the GNU linker, at least up to release 2.9.1, is reported
+*** to be unable to reliably create shared libraries on AIX.
+*** Therefore, libtool is disabling shared libraries support. If you
+*** really care for shared libraries, you may want to modify your PATH
+*** so that a non-GNU linker is found, and then restart.
+
+_LT_EOF
+ fi
+ ;;
+
+ amigaos*)
+ case $host_cpu in
+ powerpc)
+ # see comment about AmigaOS4 .so support
+ archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ archive_expsym_cmds=''
+ ;;
+ m68k)
+ archive_cmds='$RM $output_objdir/a2ixlibrary.data~$ECHO "#define NAME $libname" > $output_objdir/a2ixlibrary.data~$ECHO "#define LIBRARY_ID 1" >> $output_objdir/a2ixlibrary.data~$ECHO "#define VERSION $major" >> $output_objdir/a2ixlibrary.data~$ECHO "#define REVISION $revision" >> $output_objdir/a2ixlibrary.data~$AR $AR_FLAGS $lib $libobjs~$RANLIB $lib~(cd $output_objdir && a2ixlibrary -32)'
+ hardcode_libdir_flag_spec='-L$libdir'
+ hardcode_minus_L=yes
+ ;;
+ esac
+ ;;
+
+ beos*)
+ if $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
+ allow_undefined_flag=unsupported
+ # Joseph Beckenbach <jrb3@best.com> says some releases of gcc
+ # support --undefined. This deserves some investigation. FIXME
+ archive_cmds='$CC -nostart $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ else
+ ld_shlibs=no
+ fi
+ ;;
+
+ cygwin* | mingw* | pw32* | cegcc*)
+ # _LT_TAGVAR(hardcode_libdir_flag_spec, ) is actually meaningless,
+ # as there is no search path for DLLs.
+ hardcode_libdir_flag_spec='-L$libdir'
+ allow_undefined_flag=unsupported
+ always_export_symbols=no
+ enable_shared_with_static_runtimes=yes
+ export_symbols_cmds='$NM $libobjs $convenience | $global_symbol_pipe | $SED -e '\''/^[BCDGRS][ ]/s/.*[ ]\([^ ]*\)/\1 DATA/'\'' | $SED -e '\''/^[AITW][ ]/s/.*[ ]//'\'' | sort | uniq > $export_symbols'
+
+ if $LD --help 2>&1 | $GREP 'auto-import' > /dev/null; then
+ archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags -o $output_objdir/$soname ${wl}--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib'
+ # If the export-symbols file already is a .def file (1st line
+ # is EXPORTS), use it as is; otherwise, prepend...
+ archive_expsym_cmds='if test "x`$SED 1q $export_symbols`" = xEXPORTS; then
+ cp $export_symbols $output_objdir/$soname.def;
+ else
+ echo EXPORTS > $output_objdir/$soname.def;
+ cat $export_symbols >> $output_objdir/$soname.def;
+ fi~
+ $CC -shared $output_objdir/$soname.def $libobjs $deplibs $compiler_flags -o $output_objdir/$soname ${wl}--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib'
+ else
+ ld_shlibs=no
+ fi
+ ;;
+
+ interix[3-9]*)
+ hardcode_direct=no
+ hardcode_shlibpath_var=no
+ hardcode_libdir_flag_spec='${wl}-rpath,$libdir'
+ export_dynamic_flag_spec='${wl}-E'
+ # Hack: On Interix 3.x, we cannot compile PIC because of a broken gcc.
+ # Instead, shared libraries are loaded at an image base (0x10000000 by
+ # default) and relocated if they conflict, which is a slow very memory
+ # consuming and fragmenting process. To avoid this, we pick a random,
+ # 256 KiB-aligned image base between 0x50000000 and 0x6FFC0000 at link
+ # time. Moving up from 0x10000000 also allows more sbrk(2) space.
+ archive_cmds='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-h,$soname ${wl}--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
+ archive_expsym_cmds='sed "s,^,_," $export_symbols >$output_objdir/$soname.expsym~$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-h,$soname ${wl}--retain-symbols-file,$output_objdir/$soname.expsym ${wl}--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
+ ;;
+
+ gnu* | linux* | tpf* | k*bsd*-gnu)
+ tmp_diet=no
+ if test "$host_os" = linux-dietlibc; then
+ case $cc_basename in
+ diet\ *) tmp_diet=yes;; # linux-dietlibc with static linking (!diet-dyn)
+ esac
+ fi
+ if $LD --help 2>&1 | $EGREP ': supported targets:.* elf' > /dev/null \
+ && test "$tmp_diet" = no
+ then
+ tmp_addflag=
+ tmp_sharedflag='-shared'
+ case $cc_basename,$host_cpu in
+ pgcc*) # Portland Group C compiler
+ whole_archive_flag_spec='${wl}--whole-archive`for conv in $convenience\"\"; do test -n \"$conv\" && new_convenience=\"$new_convenience,$conv\"; done; $ECHO \"$new_convenience\"` ${wl}--no-whole-archive'
+ tmp_addflag=' $pic_flag'
+ ;;
+ pgf77* | pgf90* | pgf95*) # Portland Group f77 and f90 compilers
+ whole_archive_flag_spec='${wl}--whole-archive`for conv in $convenience\"\"; do test -n \"$conv\" && new_convenience=\"$new_convenience,$conv\"; done; $ECHO \"$new_convenience\"` ${wl}--no-whole-archive'
+ tmp_addflag=' $pic_flag -Mnomain' ;;
+ ecc*,ia64* | icc*,ia64*) # Intel C compiler on ia64
+ tmp_addflag=' -i_dynamic' ;;
+ efc*,ia64* | ifort*,ia64*) # Intel Fortran compiler on ia64
+ tmp_addflag=' -i_dynamic -nofor_main' ;;
+ ifc* | ifort*) # Intel Fortran compiler
+ tmp_addflag=' -nofor_main' ;;
+ lf95*) # Lahey Fortran 8.1
+ whole_archive_flag_spec=
+ tmp_sharedflag='--shared' ;;
+ xl[cC]*) # IBM XL C 8.0 on PPC (deal with xlf below)
+ tmp_sharedflag='-qmkshrobj'
+ tmp_addflag= ;;
+ esac
+ case `$CC -V 2>&1 | sed 5q` in
+ *Sun\ C*) # Sun C 5.9
+ whole_archive_flag_spec='${wl}--whole-archive`new_convenience=; for conv in $convenience\"\"; do test -z \"$conv\" || new_convenience=\"$new_convenience,$conv\"; done; $ECHO \"$new_convenience\"` ${wl}--no-whole-archive'
+ compiler_needs_object=yes
+ tmp_sharedflag='-G' ;;
+ *Sun\ F*) # Sun Fortran 8.3
+ tmp_sharedflag='-G' ;;
+ esac
+ archive_cmds='$CC '"$tmp_sharedflag""$tmp_addflag"' $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+
+ if test "x$supports_anon_versioning" = xyes; then
+ archive_expsym_cmds='echo "{ global:" > $output_objdir/$libname.ver~
+ cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $output_objdir/$libname.ver~
+ echo "local: *; };" >> $output_objdir/$libname.ver~
+ $CC '"$tmp_sharedflag""$tmp_addflag"' $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-version-script ${wl}$output_objdir/$libname.ver -o $lib'
+ fi
+
+ case $cc_basename in
+ xlf*)
+ # IBM XL Fortran 10.1 on PPC cannot create shared libs itself
+ whole_archive_flag_spec='--whole-archive$convenience --no-whole-archive'
+ hardcode_libdir_flag_spec=
+ hardcode_libdir_flag_spec_ld='-rpath $libdir'
+ archive_cmds='$LD -shared $libobjs $deplibs $compiler_flags -soname $soname -o $lib'
+ if test "x$supports_anon_versioning" = xyes; then
+ archive_expsym_cmds='echo "{ global:" > $output_objdir/$libname.ver~
+ cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $output_objdir/$libname.ver~
+ echo "local: *; };" >> $output_objdir/$libname.ver~
+ $LD -shared $libobjs $deplibs $compiler_flags -soname $soname -version-script $output_objdir/$libname.ver -o $lib'
+ fi
+ ;;
+ esac
+ else
+ ld_shlibs=no
+ fi
+ ;;
+
+ netbsd*)
+ if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then
+ archive_cmds='$LD -Bshareable $libobjs $deplibs $linker_flags -o $lib'
+ wlarc=
+ else
+ archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ archive_expsym_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+ fi
+ ;;
+
+ solaris*)
+ if $LD -v 2>&1 | $GREP 'BFD 2\.8' > /dev/null; then
+ ld_shlibs=no
+ cat <<_LT_EOF 1>&2
+
+*** Warning: The releases 2.8.* of the GNU linker cannot reliably
+*** create shared libraries on Solaris systems. Therefore, libtool
+*** is disabling shared libraries support. We urge you to upgrade GNU
+*** binutils to release 2.9.1 or newer. Another option is to modify
+*** your PATH or compiler configuration so that the native linker is
+*** used, and then restart.
+
+_LT_EOF
+ elif $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
+ archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ archive_expsym_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+ else
+ ld_shlibs=no
+ fi
+ ;;
+
+ sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX*)
+ case `$LD -v 2>&1` in
+ *\ [01].* | *\ 2.[0-9].* | *\ 2.1[0-5].*)
+ ld_shlibs=no
+ cat <<_LT_EOF 1>&2
+
+*** Warning: Releases of the GNU linker prior to 2.16.91.0.3 can not
+*** reliably create shared libraries on SCO systems. Therefore, libtool
+*** is disabling shared libraries support. We urge you to upgrade GNU
+*** binutils to release 2.16.91.0.3 or newer. Another option is to modify
+*** your PATH or compiler configuration so that the native linker is
+*** used, and then restart.
+
+_LT_EOF
+ ;;
+ *)
+ # For security reasons, it is highly recommended that you always
+ # use absolute paths for naming shared libraries, and exclude the
+ # DT_RUNPATH tag from executables and libraries. But doing so
+ # requires that you compile everything twice, which is a pain.
+ if $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
+ hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+ archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ archive_expsym_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+ else
+ ld_shlibs=no
+ fi
+ ;;
+ esac
+ ;;
+
+ sunos4*)
+ archive_cmds='$LD -assert pure-text -Bshareable -o $lib $libobjs $deplibs $linker_flags'
+ wlarc=
+ hardcode_direct=yes
+ hardcode_shlibpath_var=no
+ ;;
+
+ *)
+ if $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
+ archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ archive_expsym_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+ else
+ ld_shlibs=no
+ fi
+ ;;
+ esac
+
+ if test "$ld_shlibs" = no; then
+ runpath_var=
+ hardcode_libdir_flag_spec=
+ export_dynamic_flag_spec=
+ whole_archive_flag_spec=
+ fi
+ else
+ # PORTME fill in a description of your system's linker (not GNU ld)
+ case $host_os in
+ aix3*)
+ allow_undefined_flag=unsupported
+ always_export_symbols=yes
+ archive_expsym_cmds='$LD -o $output_objdir/$soname $libobjs $deplibs $linker_flags -bE:$export_symbols -T512 -H512 -bM:SRE~$AR $AR_FLAGS $lib $output_objdir/$soname'
+ # Note: this linker hardcodes the directories in LIBPATH if there
+ # are no directories specified by -L.
+ hardcode_minus_L=yes
+ if test "$GCC" = yes && test -z "$lt_prog_compiler_static"; then
+ # Neither direct hardcoding nor static linking is supported with a
+ # broken collect2.
+ hardcode_direct=unsupported
+ fi
+ ;;
+
+ aix[4-9]*)
+ if test "$host_cpu" = ia64; then
+ # On IA64, the linker does run time linking by default, so we don't
+ # have to do anything special.
+ aix_use_runtimelinking=no
+ exp_sym_flag='-Bexport'
+ no_entry_flag=""
+ else
+ # If we're using GNU nm, then we don't want the "-C" option.
+ # -C means demangle to AIX nm, but means don't demangle with GNU nm
+ if $NM -V 2>&1 | $GREP 'GNU' > /dev/null; then
+ export_symbols_cmds='$NM -Bpg $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B")) && (substr(\$ 3,1,1) != ".")) { print \$ 3 } }'\'' | sort -u > $export_symbols'
+ else
+ export_symbols_cmds='$NM -BCpg $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B")) && (substr(\$ 3,1,1) != ".")) { print \$ 3 } }'\'' | sort -u > $export_symbols'
+ fi
+ aix_use_runtimelinking=no
+
+ # Test if we are trying to use run time linking or normal
+ # AIX style linking. If -brtl is somewhere in LDFLAGS, we
+ # need to do runtime linking.
+ case $host_os in aix4.[23]|aix4.[23].*|aix[5-9]*)
+ for ld_flag in $LDFLAGS; do
+ if (test $ld_flag = "-brtl" || test $ld_flag = "-Wl,-brtl"); then
+ aix_use_runtimelinking=yes
+ break
+ fi
+ done
+ ;;
+ esac
+
+ exp_sym_flag='-bexport'
+ no_entry_flag='-bnoentry'
+ fi
+
+ # When large executables or shared objects are built, AIX ld can
+ # have problems creating the table of contents. If linking a library
+ # or program results in "error TOC overflow" add -mminimal-toc to
+ # CXXFLAGS/CFLAGS for g++/gcc. In the cases where that is not
+ # enough to fix the problem, add -Wl,-bbigtoc to LDFLAGS.
+
+ archive_cmds=''
+ hardcode_direct=yes
+ hardcode_direct_absolute=yes
+ hardcode_libdir_separator=':'
+ link_all_deplibs=yes
+ file_list_spec='${wl}-f,'
+
+ if test "$GCC" = yes; then
+ case $host_os in aix4.[012]|aix4.[012].*)
+ # We only want to do this on AIX 4.2 and lower, the check
+ # below for broken collect2 doesn't work under 4.3+
+ collect2name=`${CC} -print-prog-name=collect2`
+ if test -f "$collect2name" &&
+ strings "$collect2name" | $GREP resolve_lib_name >/dev/null
+ then
+ # We have reworked collect2
+ :
+ else
+ # We have old collect2
+ hardcode_direct=unsupported
+ # It fails to find uninstalled libraries when the uninstalled
+ # path is not listed in the libpath. Setting hardcode_minus_L
+ # to unsupported forces relinking
+ hardcode_minus_L=yes
+ hardcode_libdir_flag_spec='-L$libdir'
+ hardcode_libdir_separator=
+ fi
+ ;;
+ esac
+ shared_flag='-shared'
+ if test "$aix_use_runtimelinking" = yes; then
+ shared_flag="$shared_flag "'${wl}-G'
+ fi
+ else
+ # not using gcc
+ if test "$host_cpu" = ia64; then
+ # VisualAge C++, Version 5.5 for AIX 5L for IA-64, Beta 3 Release
+ # chokes on -Wl,-G. The following line is correct:
+ shared_flag='-G'
+ else
+ if test "$aix_use_runtimelinking" = yes; then
+ shared_flag='${wl}-G'
+ else
+ shared_flag='${wl}-bM:SRE'
+ fi
+ fi
+ fi
+
+ export_dynamic_flag_spec='${wl}-bexpall'
+ # It seems that -bexpall does not export symbols beginning with
+ # underscore (_), so it is better to generate a list of symbols to export.
+ always_export_symbols=yes
+ if test "$aix_use_runtimelinking" = yes; then
+ # Warning - without using the other runtime loading flags (-brtl),
+ # -berok will link without error, but may produce a broken library.
+ allow_undefined_flag='-berok'
+ # Determine the default libpath from the value encoded in an
+ # empty executable.
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+int
+main ()
+{
+
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+
+lt_aix_libpath_sed='
+ /Import File Strings/,/^$/ {
+ /^0/ {
+ s/^0 *\(.*\)$/\1/
+ p
+ }
+ }'
+aix_libpath=`dump -H conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"`
+# Check for a 64-bit object if we didn't find anything.
+if test -z "$aix_libpath"; then
+ aix_libpath=`dump -HX64 conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"`
+fi
+fi
+rm -f core conftest.err conftest.$ac_objext \
+ conftest$ac_exeext conftest.$ac_ext
+if test -z "$aix_libpath"; then aix_libpath="/usr/lib:/lib"; fi
+
+ hardcode_libdir_flag_spec='${wl}-blibpath:$libdir:'"$aix_libpath"
+ archive_expsym_cmds='$CC -o $output_objdir/$soname $libobjs $deplibs '"\${wl}$no_entry_flag"' $compiler_flags `if test "x${allow_undefined_flag}" != "x"; then $ECHO "X${wl}${allow_undefined_flag}" | $Xsed; else :; fi` '"\${wl}$exp_sym_flag:\$export_symbols $shared_flag"
+ else
+ if test "$host_cpu" = ia64; then
+ hardcode_libdir_flag_spec='${wl}-R $libdir:/usr/lib:/lib'
+ allow_undefined_flag="-z nodefs"
+ archive_expsym_cmds="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs '"\${wl}$no_entry_flag"' $compiler_flags ${wl}${allow_undefined_flag} '"\${wl}$exp_sym_flag:\$export_symbols"
+ else
+ # Determine the default libpath from the value encoded in an
+ # empty executable.
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+int
+main ()
+{
+
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+
+lt_aix_libpath_sed='
+ /Import File Strings/,/^$/ {
+ /^0/ {
+ s/^0 *\(.*\)$/\1/
+ p
+ }
+ }'
+aix_libpath=`dump -H conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"`
+# Check for a 64-bit object if we didn't find anything.
+if test -z "$aix_libpath"; then
+ aix_libpath=`dump -HX64 conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"`
+fi
+fi
+rm -f core conftest.err conftest.$ac_objext \
+ conftest$ac_exeext conftest.$ac_ext
+if test -z "$aix_libpath"; then aix_libpath="/usr/lib:/lib"; fi
+
+ hardcode_libdir_flag_spec='${wl}-blibpath:$libdir:'"$aix_libpath"
+ # Warning - without using the other run time loading flags,
+ # -berok will link without error, but may produce a broken library.
+ no_undefined_flag=' ${wl}-bernotok'
+ allow_undefined_flag=' ${wl}-berok'
+ # Exported symbols can be pulled into shared objects from archives
+ whole_archive_flag_spec='$convenience'
+ archive_cmds_need_lc=yes
+ # This is similar to how AIX traditionally builds its shared libraries.
+ archive_expsym_cmds="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs ${wl}-bnoentry $compiler_flags ${wl}-bE:$export_symbols${allow_undefined_flag}~$AR $AR_FLAGS $output_objdir/$libname$release.a $output_objdir/$soname'
+ fi
+ fi
+ ;;
+
+ amigaos*)
+ case $host_cpu in
+ powerpc)
+ # see comment about AmigaOS4 .so support
+ archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ archive_expsym_cmds=''
+ ;;
+ m68k)
+ archive_cmds='$RM $output_objdir/a2ixlibrary.data~$ECHO "#define NAME $libname" > $output_objdir/a2ixlibrary.data~$ECHO "#define LIBRARY_ID 1" >> $output_objdir/a2ixlibrary.data~$ECHO "#define VERSION $major" >> $output_objdir/a2ixlibrary.data~$ECHO "#define REVISION $revision" >> $output_objdir/a2ixlibrary.data~$AR $AR_FLAGS $lib $libobjs~$RANLIB $lib~(cd $output_objdir && a2ixlibrary -32)'
+ hardcode_libdir_flag_spec='-L$libdir'
+ hardcode_minus_L=yes
+ ;;
+ esac
+ ;;
+
+ bsdi[45]*)
+ export_dynamic_flag_spec=-rdynamic
+ ;;
+
+ cygwin* | mingw* | pw32* | cegcc*)
+ # When not using gcc, we currently assume that we are using
+ # Microsoft Visual C++.
+ # hardcode_libdir_flag_spec is actually meaningless, as there is
+ # no search path for DLLs.
+ hardcode_libdir_flag_spec=' '
+ allow_undefined_flag=unsupported
+ # Tell ltmain to make .lib files, not .a files.
+ libext=lib
+ # Tell ltmain to make .dll files, not .so files.
+ shrext_cmds=".dll"
+ # FIXME: Setting linknames here is a bad hack.
+ archive_cmds='$CC -o $lib $libobjs $compiler_flags `$ECHO "X$deplibs" | $Xsed -e '\''s/ -lc$//'\''` -link -dll~linknames='
+ # The linker will automatically build a .lib file if we build a DLL.
+ old_archive_from_new_cmds='true'
+ # FIXME: Should let the user specify the lib program.
+ old_archive_cmds='lib -OUT:$oldlib$oldobjs$old_deplibs'
+ fix_srcfile_path='`cygpath -w "$srcfile"`'
+ enable_shared_with_static_runtimes=yes
+ ;;
+
+ darwin* | rhapsody*)
+
+
+ archive_cmds_need_lc=no
+ hardcode_direct=no
+ hardcode_automatic=yes
+ hardcode_shlibpath_var=unsupported
+ whole_archive_flag_spec=''
+ link_all_deplibs=yes
+ allow_undefined_flag="$_lt_dar_allow_undefined"
+ case $cc_basename in
+ ifort*) _lt_dar_can_shared=yes ;;
+ *) _lt_dar_can_shared=$GCC ;;
+ esac
+ if test "$_lt_dar_can_shared" = "yes"; then
+ output_verbose_link_cmd=echo
+ archive_cmds="\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$libobjs \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring $_lt_dar_single_mod${_lt_dsymutil}"
+ module_cmds="\$CC \$allow_undefined_flag -o \$lib -bundle \$libobjs \$deplibs \$compiler_flags${_lt_dsymutil}"
+ archive_expsym_cmds="sed 's,^,_,' < \$export_symbols > \$output_objdir/\${libname}-symbols.expsym~\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$libobjs \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring ${_lt_dar_single_mod}${_lt_dar_export_syms}${_lt_dsymutil}"
+ module_expsym_cmds="sed -e 's,^,_,' < \$export_symbols > \$output_objdir/\${libname}-symbols.expsym~\$CC \$allow_undefined_flag -o \$lib -bundle \$libobjs \$deplibs \$compiler_flags${_lt_dar_export_syms}${_lt_dsymutil}"
+
+ else
+ ld_shlibs=no
+ fi
+
+ ;;
+
+ dgux*)
+ archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+ hardcode_libdir_flag_spec='-L$libdir'
+ hardcode_shlibpath_var=no
+ ;;
+
+ freebsd1*)
+ ld_shlibs=no
+ ;;
+
+ # FreeBSD 2.2.[012] allows us to include c++rt0.o to get C++ constructor
+ # support. Future versions do this automatically, but an explicit c++rt0.o
+ # does not break anything, and helps significantly (at the cost of a little
+ # extra space).
+ freebsd2.2*)
+ archive_cmds='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags /usr/lib/c++rt0.o'
+ hardcode_libdir_flag_spec='-R$libdir'
+ hardcode_direct=yes
+ hardcode_shlibpath_var=no
+ ;;
+
+ # Unfortunately, older versions of FreeBSD 2 do not have this feature.
+ freebsd2*)
+ archive_cmds='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags'
+ hardcode_direct=yes
+ hardcode_minus_L=yes
+ hardcode_shlibpath_var=no
+ ;;
+
+ # FreeBSD 3 and greater uses gcc -shared to do shared libraries.
+ freebsd* | dragonfly*)
+ archive_cmds='$CC -shared -o $lib $libobjs $deplibs $compiler_flags'
+ hardcode_libdir_flag_spec='-R$libdir'
+ hardcode_direct=yes
+ hardcode_shlibpath_var=no
+ ;;
+
+ hpux9*)
+ if test "$GCC" = yes; then
+ archive_cmds='$RM $output_objdir/$soname~$CC -shared -fPIC ${wl}+b ${wl}$install_libdir -o $output_objdir/$soname $libobjs $deplibs $compiler_flags~test $output_objdir/$soname = $lib || mv $output_objdir/$soname $lib'
+ else
+ archive_cmds='$RM $output_objdir/$soname~$LD -b +b $install_libdir -o $output_objdir/$soname $libobjs $deplibs $linker_flags~test $output_objdir/$soname = $lib || mv $output_objdir/$soname $lib'
+ fi
+ hardcode_libdir_flag_spec='${wl}+b ${wl}$libdir'
+ hardcode_libdir_separator=:
+ hardcode_direct=yes
+
+ # hardcode_minus_L: Not really in the search PATH,
+ # but as the default location of the library.
+ hardcode_minus_L=yes
+ export_dynamic_flag_spec='${wl}-E'
+ ;;
+
+ hpux10*)
+ if test "$GCC" = yes -a "$with_gnu_ld" = no; then
+ archive_cmds='$CC -shared -fPIC ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $libobjs $deplibs $compiler_flags'
+ else
+ archive_cmds='$LD -b +h $soname +b $install_libdir -o $lib $libobjs $deplibs $linker_flags'
+ fi
+ if test "$with_gnu_ld" = no; then
+ hardcode_libdir_flag_spec='${wl}+b ${wl}$libdir'
+ hardcode_libdir_flag_spec_ld='+b $libdir'
+ hardcode_libdir_separator=:
+ hardcode_direct=yes
+ hardcode_direct_absolute=yes
+ export_dynamic_flag_spec='${wl}-E'
+ # hardcode_minus_L: Not really in the search PATH,
+ # but as the default location of the library.
+ hardcode_minus_L=yes
+ fi
+ ;;
+
+ hpux11*)
+ if test "$GCC" = yes -a "$with_gnu_ld" = no; then
+ case $host_cpu in
+ hppa*64*)
+ archive_cmds='$CC -shared ${wl}+h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags'
+ ;;
+ ia64*)
+ archive_cmds='$CC -shared -fPIC ${wl}+h ${wl}$soname ${wl}+nodefaultrpath -o $lib $libobjs $deplibs $compiler_flags'
+ ;;
+ *)
+ archive_cmds='$CC -shared -fPIC ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $libobjs $deplibs $compiler_flags'
+ ;;
+ esac
+ else
+ case $host_cpu in
+ hppa*64*)
+ archive_cmds='$CC -b ${wl}+h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags'
+ ;;
+ ia64*)
+ archive_cmds='$CC -b ${wl}+h ${wl}$soname ${wl}+nodefaultrpath -o $lib $libobjs $deplibs $compiler_flags'
+ ;;
+ *)
+ archive_cmds='$CC -b ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $libobjs $deplibs $compiler_flags'
+ ;;
+ esac
+ fi
+ if test "$with_gnu_ld" = no; then
+ hardcode_libdir_flag_spec='${wl}+b ${wl}$libdir'
+ hardcode_libdir_separator=:
+
+ case $host_cpu in
+ hppa*64*|ia64*)
+ hardcode_direct=no
+ hardcode_shlibpath_var=no
+ ;;
+ *)
+ hardcode_direct=yes
+ hardcode_direct_absolute=yes
+ export_dynamic_flag_spec='${wl}-E'
+
+ # hardcode_minus_L: Not really in the search PATH,
+ # but as the default location of the library.
+ hardcode_minus_L=yes
+ ;;
+ esac
+ fi
+ ;;
+
+ irix5* | irix6* | nonstopux*)
+ if test "$GCC" = yes; then
+ archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && $ECHO "X${wl}-set_version ${wl}$verstring" | $Xsed` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
+ # Try to use the -exported_symbol ld option, if it does not
+ # work, assume that -exports_file does not work either and
+ # implicitly export all symbols.
+ save_LDFLAGS="$LDFLAGS"
+ LDFLAGS="$LDFLAGS -shared ${wl}-exported_symbol ${wl}foo ${wl}-update_registry ${wl}/dev/null"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+int foo(void) {}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+ archive_expsym_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && $ECHO "X${wl}-set_version ${wl}$verstring" | $Xsed` ${wl}-update_registry ${wl}${output_objdir}/so_locations ${wl}-exports_file ${wl}$export_symbols -o $lib'
+
+fi
+rm -f core conftest.err conftest.$ac_objext \
+ conftest$ac_exeext conftest.$ac_ext
+ LDFLAGS="$save_LDFLAGS"
+ else
+ archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags -soname $soname `test -n "$verstring" && $ECHO "X-set_version $verstring" | $Xsed` -update_registry ${output_objdir}/so_locations -o $lib'
+ archive_expsym_cmds='$CC -shared $libobjs $deplibs $compiler_flags -soname $soname `test -n "$verstring" && $ECHO "X-set_version $verstring" | $Xsed` -update_registry ${output_objdir}/so_locations -exports_file $export_symbols -o $lib'
+ fi
+ archive_cmds_need_lc='no'
+ hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+ hardcode_libdir_separator=:
+ inherit_rpath=yes
+ link_all_deplibs=yes
+ ;;
+
+ netbsd*)
+ if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then
+ archive_cmds='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags' # a.out
+ else
+ archive_cmds='$LD -shared -o $lib $libobjs $deplibs $linker_flags' # ELF
+ fi
+ hardcode_libdir_flag_spec='-R$libdir'
+ hardcode_direct=yes
+ hardcode_shlibpath_var=no
+ ;;
+
+ newsos6)
+ archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+ hardcode_direct=yes
+ hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+ hardcode_libdir_separator=:
+ hardcode_shlibpath_var=no
+ ;;
+
+ *nto* | *qnx*)
+ ;;
+
+ openbsd*)
+ if test -f /usr/libexec/ld.so; then
+ hardcode_direct=yes
+ hardcode_shlibpath_var=no
+ hardcode_direct_absolute=yes
+ if test -z "`echo __ELF__ | $CC -E - | $GREP __ELF__`" || test "$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
+ archive_cmds='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags'
+ archive_expsym_cmds='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags ${wl}-retain-symbols-file,$export_symbols'
+ hardcode_libdir_flag_spec='${wl}-rpath,$libdir'
+ export_dynamic_flag_spec='${wl}-E'
+ else
+ case $host_os in
+ openbsd[01].* | openbsd2.[0-7] | openbsd2.[0-7].*)
+ archive_cmds='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags'
+ hardcode_libdir_flag_spec='-R$libdir'
+ ;;
+ *)
+ archive_cmds='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags'
+ hardcode_libdir_flag_spec='${wl}-rpath,$libdir'
+ ;;
+ esac
+ fi
+ else
+ ld_shlibs=no
+ fi
+ ;;
+
+ os2*)
+ hardcode_libdir_flag_spec='-L$libdir'
+ hardcode_minus_L=yes
+ allow_undefined_flag=unsupported
+ archive_cmds='$ECHO "LIBRARY $libname INITINSTANCE" > $output_objdir/$libname.def~$ECHO "DESCRIPTION \"$libname\"" >> $output_objdir/$libname.def~$ECHO DATA >> $output_objdir/$libname.def~$ECHO " SINGLE NONSHARED" >> $output_objdir/$libname.def~$ECHO EXPORTS >> $output_objdir/$libname.def~emxexp $libobjs >> $output_objdir/$libname.def~$CC -Zdll -Zcrtdll -o $lib $libobjs $deplibs $compiler_flags $output_objdir/$libname.def'
+ old_archive_from_new_cmds='emximp -o $output_objdir/$libname.a $output_objdir/$libname.def'
+ ;;
+
+ osf3*)
+ if test "$GCC" = yes; then
+ allow_undefined_flag=' ${wl}-expect_unresolved ${wl}\*'
+ archive_cmds='$CC -shared${allow_undefined_flag} $libobjs $deplibs $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && $ECHO "X${wl}-set_version ${wl}$verstring" | $Xsed` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
+ else
+ allow_undefined_flag=' -expect_unresolved \*'
+ archive_cmds='$CC -shared${allow_undefined_flag} $libobjs $deplibs $compiler_flags -soname $soname `test -n "$verstring" && $ECHO "X-set_version $verstring" | $Xsed` -update_registry ${output_objdir}/so_locations -o $lib'
+ fi
+ archive_cmds_need_lc='no'
+ hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+ hardcode_libdir_separator=:
+ ;;
+
+ osf4* | osf5*) # as osf3* with the addition of -msym flag
+ if test "$GCC" = yes; then
+ allow_undefined_flag=' ${wl}-expect_unresolved ${wl}\*'
+ archive_cmds='$CC -shared${allow_undefined_flag} $libobjs $deplibs $compiler_flags ${wl}-msym ${wl}-soname ${wl}$soname `test -n "$verstring" && $ECHO "X${wl}-set_version ${wl}$verstring" | $Xsed` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
+ hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+ else
+ allow_undefined_flag=' -expect_unresolved \*'
+ archive_cmds='$CC -shared${allow_undefined_flag} $libobjs $deplibs $compiler_flags -msym -soname $soname `test -n "$verstring" && $ECHO "X-set_version $verstring" | $Xsed` -update_registry ${output_objdir}/so_locations -o $lib'
+ archive_expsym_cmds='for i in `cat $export_symbols`; do printf "%s %s\\n" -exported_symbol "\$i" >> $lib.exp; done; printf "%s\\n" "-hidden">> $lib.exp~
+ $CC -shared${allow_undefined_flag} ${wl}-input ${wl}$lib.exp $compiler_flags $libobjs $deplibs -soname $soname `test -n "$verstring" && $ECHO "X-set_version $verstring" | $Xsed` -update_registry ${output_objdir}/so_locations -o $lib~$RM $lib.exp'
+
+ # Both c and cxx compiler support -rpath directly
+ hardcode_libdir_flag_spec='-rpath $libdir'
+ fi
+ archive_cmds_need_lc='no'
+ hardcode_libdir_separator=:
+ ;;
+
+ solaris*)
+ no_undefined_flag=' -z defs'
+ if test "$GCC" = yes; then
+ wlarc='${wl}'
+ archive_cmds='$CC -shared ${wl}-z ${wl}text ${wl}-h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags'
+ archive_expsym_cmds='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
+ $CC -shared ${wl}-z ${wl}text ${wl}-M ${wl}$lib.exp ${wl}-h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags~$RM $lib.exp'
+ else
+ case `$CC -V 2>&1` in
+ *"Compilers 5.0"*)
+ wlarc=''
+ archive_cmds='$LD -G${allow_undefined_flag} -h $soname -o $lib $libobjs $deplibs $linker_flags'
+ archive_expsym_cmds='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
+ $LD -G${allow_undefined_flag} -M $lib.exp -h $soname -o $lib $libobjs $deplibs $linker_flags~$RM $lib.exp'
+ ;;
+ *)
+ wlarc='${wl}'
+ archive_cmds='$CC -G${allow_undefined_flag} -h $soname -o $lib $libobjs $deplibs $compiler_flags'
+ archive_expsym_cmds='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
+ $CC -G${allow_undefined_flag} -M $lib.exp -h $soname -o $lib $libobjs $deplibs $compiler_flags~$RM $lib.exp'
+ ;;
+ esac
+ fi
+ hardcode_libdir_flag_spec='-R$libdir'
+ hardcode_shlibpath_var=no
+ case $host_os in
+ solaris2.[0-5] | solaris2.[0-5].*) ;;
+ *)
+ # The compiler driver will combine and reorder linker options,
+ # but understands `-z linker_flag'. GCC discards it without `$wl',
+ # but is careful enough not to reorder.
+ # Supported since Solaris 2.6 (maybe 2.5.1?)
+ if test "$GCC" = yes; then
+ whole_archive_flag_spec='${wl}-z ${wl}allextract$convenience ${wl}-z ${wl}defaultextract'
+ else
+ whole_archive_flag_spec='-z allextract$convenience -z defaultextract'
+ fi
+ ;;
+ esac
+ link_all_deplibs=yes
+ ;;
+
+ sunos4*)
+ if test "x$host_vendor" = xsequent; then
+ # Use $CC to link under sequent, because it throws in some extra .o
+ # files that make .init and .fini sections work.
+ archive_cmds='$CC -G ${wl}-h $soname -o $lib $libobjs $deplibs $compiler_flags'
+ else
+ archive_cmds='$LD -assert pure-text -Bstatic -o $lib $libobjs $deplibs $linker_flags'
+ fi
+ hardcode_libdir_flag_spec='-L$libdir'
+ hardcode_direct=yes
+ hardcode_minus_L=yes
+ hardcode_shlibpath_var=no
+ ;;
+
+ sysv4)
+ case $host_vendor in
+ sni)
+ archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+ hardcode_direct=yes # is this really true???
+ ;;
+ siemens)
+ ## LD is ld it makes a PLAMLIB
+ ## CC just makes a GrossModule.
+ archive_cmds='$LD -G -o $lib $libobjs $deplibs $linker_flags'
+ reload_cmds='$CC -r -o $output$reload_objs'
+ hardcode_direct=no
+ ;;
+ motorola)
+ archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+ hardcode_direct=no #Motorola manual says yes, but my tests say they lie
+ ;;
+ esac
+ runpath_var='LD_RUN_PATH'
+ hardcode_shlibpath_var=no
+ ;;
+
+ sysv4.3*)
+ archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+ hardcode_shlibpath_var=no
+ export_dynamic_flag_spec='-Bexport'
+ ;;
+
+ sysv4*MP*)
+ if test -d /usr/nec; then
+ archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+ hardcode_shlibpath_var=no
+ runpath_var=LD_RUN_PATH
+ hardcode_runpath_var=yes
+ ld_shlibs=yes
+ fi
+ ;;
+
+ sysv4*uw2* | sysv5OpenUNIX* | sysv5UnixWare7.[01].[10]* | unixware7* | sco3.2v5.0.[024]*)
+ no_undefined_flag='${wl}-z,text'
+ archive_cmds_need_lc=no
+ hardcode_shlibpath_var=no
+ runpath_var='LD_RUN_PATH'
+
+ if test "$GCC" = yes; then
+ archive_cmds='$CC -shared ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ archive_expsym_cmds='$CC -shared ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ else
+ archive_cmds='$CC -G ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ archive_expsym_cmds='$CC -G ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ fi
+ ;;
+
+ sysv5* | sco3.2v5* | sco5v6*)
+ # Note: We can NOT use -z defs as we might desire, because we do not
+ # link with -lc, and that would cause any symbols used from libc to
+ # always be unresolved, which means just about no library would
+ # ever link correctly. If we're not using GNU ld we use -z text
+ # though, which does catch some bad symbols but isn't as heavy-handed
+ # as -z defs.
+ no_undefined_flag='${wl}-z,text'
+ allow_undefined_flag='${wl}-z,nodefs'
+ archive_cmds_need_lc=no
+ hardcode_shlibpath_var=no
+ hardcode_libdir_flag_spec='${wl}-R,$libdir'
+ hardcode_libdir_separator=':'
+ link_all_deplibs=yes
+ export_dynamic_flag_spec='${wl}-Bexport'
+ runpath_var='LD_RUN_PATH'
+
+ if test "$GCC" = yes; then
+ archive_cmds='$CC -shared ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ archive_expsym_cmds='$CC -shared ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ else
+ archive_cmds='$CC -G ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ archive_expsym_cmds='$CC -G ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ fi
+ ;;
+
+ uts4*)
+ archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+ hardcode_libdir_flag_spec='-L$libdir'
+ hardcode_shlibpath_var=no
+ ;;
+
+ *)
+ ld_shlibs=no
+ ;;
+ esac
+
+ if test x$host_vendor = xsni; then
+ case $host in
+ sysv4 | sysv4.2uw2* | sysv4.3* | sysv5*)
+ export_dynamic_flag_spec='${wl}-Blargedynsym'
+ ;;
+ esac
+ fi
+ fi
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ld_shlibs" >&5
+$as_echo "$ld_shlibs" >&6; }
+test "$ld_shlibs" = no && can_build_shared=no
+
+with_gnu_ld=$with_gnu_ld
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+#
+# Do we need to explicitly link libc?
+#
+case "x$archive_cmds_need_lc" in
+x|xyes)
+ # Assume -lc should be added
+ archive_cmds_need_lc=yes
+
+ if test "$enable_shared" = yes && test "$GCC" = yes; then
+ case $archive_cmds in
+ *'~'*)
+ # FIXME: we may have to deal with multi-command sequences.
+ ;;
+ '$CC '*)
+ # Test whether the compiler implicitly links with -lc since on some
+ # systems, -lgcc has to come before -lc. If gcc already passes -lc
+ # to ld, don't add -lc before -lgcc.
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether -lc should be explicitly linked in" >&5
+$as_echo_n "checking whether -lc should be explicitly linked in... " >&6; }
+ $RM conftest*
+ echo "$lt_simple_compile_test_code" > conftest.$ac_ext
+
+ if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5
+ (eval $ac_compile) 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; } 2>conftest.err; then
+ soname=conftest
+ lib=conftest
+ libobjs=conftest.$ac_objext
+ deplibs=
+ wl=$lt_prog_compiler_wl
+ pic_flag=$lt_prog_compiler_pic
+ compiler_flags=-v
+ linker_flags=-v
+ verstring=
+ output_objdir=.
+ libname=conftest
+ lt_save_allow_undefined_flag=$allow_undefined_flag
+ allow_undefined_flag=
+ if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$archive_cmds 2\>\&1 \| $GREP \" -lc \" \>/dev/null 2\>\&1\""; } >&5
+ (eval $archive_cmds 2\>\&1 \| $GREP \" -lc \" \>/dev/null 2\>\&1) 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; }
+ then
+ archive_cmds_need_lc=no
+ else
+ archive_cmds_need_lc=yes
+ fi
+ allow_undefined_flag=$lt_save_allow_undefined_flag
+ else
+ cat conftest.err 1>&5
+ fi
+ $RM conftest*
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $archive_cmds_need_lc" >&5
+$as_echo "$archive_cmds_need_lc" >&6; }
+ ;;
+ esac
+ fi
+ ;;
+esac
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking dynamic linker characteristics" >&5
+$as_echo_n "checking dynamic linker characteristics... " >&6; }
+
+if test "$GCC" = yes; then
+ case $host_os in
+ darwin*) lt_awk_arg="/^libraries:/,/LR/" ;;
+ *) lt_awk_arg="/^libraries:/" ;;
+ esac
+ lt_search_path_spec=`$CC -print-search-dirs | awk $lt_awk_arg | $SED -e "s/^libraries://" -e "s,=/,/,g"`
+ if $ECHO "$lt_search_path_spec" | $GREP ';' >/dev/null ; then
+ # if the path contains ";" then we assume it to be the separator
+ # otherwise default to the standard path separator (i.e. ":") - it is
+ # assumed that no part of a normal pathname contains ";" but that should
+ # okay in the real world where ";" in dirpaths is itself problematic.
+ lt_search_path_spec=`$ECHO "$lt_search_path_spec" | $SED -e 's/;/ /g'`
+ else
+ lt_search_path_spec=`$ECHO "$lt_search_path_spec" | $SED -e "s/$PATH_SEPARATOR/ /g"`
+ fi
+ # Ok, now we have the path, separated by spaces, we can step through it
+ # and add multilib dir if necessary.
+ lt_tmp_lt_search_path_spec=
+ lt_multi_os_dir=`$CC $CPPFLAGS $CFLAGS $LDFLAGS -print-multi-os-directory 2>/dev/null`
+ for lt_sys_path in $lt_search_path_spec; do
+ if test -d "$lt_sys_path/$lt_multi_os_dir"; then
+ lt_tmp_lt_search_path_spec="$lt_tmp_lt_search_path_spec $lt_sys_path/$lt_multi_os_dir"
+ else
+ test -d "$lt_sys_path" && \
+ lt_tmp_lt_search_path_spec="$lt_tmp_lt_search_path_spec $lt_sys_path"
+ fi
+ done
+ lt_search_path_spec=`$ECHO $lt_tmp_lt_search_path_spec | awk '
+BEGIN {RS=" "; FS="/|\n";} {
+ lt_foo="";
+ lt_count=0;
+ for (lt_i = NF; lt_i > 0; lt_i--) {
+ if ($lt_i != "" && $lt_i != ".") {
+ if ($lt_i == "..") {
+ lt_count++;
+ } else {
+ if (lt_count == 0) {
+ lt_foo="/" $lt_i lt_foo;
+ } else {
+ lt_count--;
+ }
+ }
+ }
+ }
+ if (lt_foo != "") { lt_freq[lt_foo]++; }
+ if (lt_freq[lt_foo] == 1) { print lt_foo; }
+}'`
+ sys_lib_search_path_spec=`$ECHO $lt_search_path_spec`
+else
+ sys_lib_search_path_spec="/lib /usr/lib /usr/local/lib"
+fi
+library_names_spec=
+libname_spec='lib$name'
+soname_spec=
+shrext_cmds=".so"
+postinstall_cmds=
+postuninstall_cmds=
+finish_cmds=
+finish_eval=
+shlibpath_var=
+shlibpath_overrides_runpath=unknown
+version_type=none
+dynamic_linker="$host_os ld.so"
+sys_lib_dlsearch_path_spec="/lib /usr/lib"
+need_lib_prefix=unknown
+hardcode_into_libs=no
+
+# when you set need_version to no, make sure it does not cause -set_version
+# flags to be left without arguments
+need_version=unknown
+
+case $host_os in
+aix3*)
+ version_type=linux
+ library_names_spec='${libname}${release}${shared_ext}$versuffix $libname.a'
+ shlibpath_var=LIBPATH
+
+ # AIX 3 has no versioning support, so we append a major version to the name.
+ soname_spec='${libname}${release}${shared_ext}$major'
+ ;;
+
+aix[4-9]*)
+ version_type=linux
+ need_lib_prefix=no
+ need_version=no
+ hardcode_into_libs=yes
+ if test "$host_cpu" = ia64; then
+ # AIX 5 supports IA64
+ library_names_spec='${libname}${release}${shared_ext}$major ${libname}${release}${shared_ext}$versuffix $libname${shared_ext}'
+ shlibpath_var=LD_LIBRARY_PATH
+ else
+ # With GCC up to 2.95.x, collect2 would create an import file
+ # for dependence libraries. The import file would start with
+ # the line `#! .'. This would cause the generated library to
+ # depend on `.', always an invalid library. This was fixed in
+ # development snapshots of GCC prior to 3.0.
+ case $host_os in
+ aix4 | aix4.[01] | aix4.[01].*)
+ if { echo '#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 97)'
+ echo ' yes '
+ echo '#endif'; } | ${CC} -E - | $GREP yes > /dev/null; then
+ :
+ else
+ can_build_shared=no
+ fi
+ ;;
+ esac
+ # AIX (on Power*) has no versioning support, so currently we can not hardcode correct
+ # soname into executable. Probably we can add versioning support to
+ # collect2, so additional links can be useful in future.
+ if test "$aix_use_runtimelinking" = yes; then
+ # If using run time linking (on AIX 4.2 or later) use lib<name>.so
+ # instead of lib<name>.a to let people know that these are not
+ # typical AIX shared libraries.
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ else
+ # We preserve .a as extension for shared libraries through AIX4.2
+ # and later when we are not doing run time linking.
+ library_names_spec='${libname}${release}.a $libname.a'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ fi
+ shlibpath_var=LIBPATH
+ fi
+ ;;
+
+amigaos*)
+ case $host_cpu in
+ powerpc)
+ # Since July 2007 AmigaOS4 officially supports .so libraries.
+ # When compiling the executable, add -use-dynld -Lsobjs: to the compileline.
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ ;;
+ m68k)
+ library_names_spec='$libname.ixlibrary $libname.a'
+ # Create ${libname}_ixlibrary.a entries in /sys/libs.
+ finish_eval='for lib in `ls $libdir/*.ixlibrary 2>/dev/null`; do libname=`$ECHO "X$lib" | $Xsed -e '\''s%^.*/\([^/]*\)\.ixlibrary$%\1%'\''`; test $RM /sys/libs/${libname}_ixlibrary.a; $show "cd /sys/libs && $LN_S $lib ${libname}_ixlibrary.a"; cd /sys/libs && $LN_S $lib ${libname}_ixlibrary.a || exit 1; done'
+ ;;
+ esac
+ ;;
+
+beos*)
+ library_names_spec='${libname}${shared_ext}'
+ dynamic_linker="$host_os ld.so"
+ shlibpath_var=LIBRARY_PATH
+ ;;
+
+bsdi[45]*)
+ version_type=linux
+ need_version=no
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ finish_cmds='PATH="\$PATH:/sbin" ldconfig $libdir'
+ shlibpath_var=LD_LIBRARY_PATH
+ sys_lib_search_path_spec="/shlib /usr/lib /usr/X11/lib /usr/contrib/lib /lib /usr/local/lib"
+ sys_lib_dlsearch_path_spec="/shlib /usr/lib /usr/local/lib"
+ # the default ld.so.conf also contains /usr/contrib/lib and
+ # /usr/X11R6/lib (/usr/X11 is a link to /usr/X11R6), but let us allow
+ # libtool to hard-code these into programs
+ ;;
+
+cygwin* | mingw* | pw32* | cegcc*)
+ version_type=windows
+ shrext_cmds=".dll"
+ need_version=no
+ need_lib_prefix=no
+
+ case $GCC,$host_os in
+ yes,cygwin* | yes,mingw* | yes,pw32* | yes,cegcc*)
+ library_names_spec='$libname.dll.a'
+ # DLL is installed to $(libdir)/../bin by postinstall_cmds
+ postinstall_cmds='base_file=`basename \${file}`~
+ dlpath=`$SHELL 2>&1 -c '\''. $dir/'\''\${base_file}'\''i; echo \$dlname'\''`~
+ dldir=$destdir/`dirname \$dlpath`~
+ test -d \$dldir || mkdir -p \$dldir~
+ $install_prog $dir/$dlname \$dldir/$dlname~
+ chmod a+x \$dldir/$dlname~
+ if test -n '\''$stripme'\'' && test -n '\''$striplib'\''; then
+ eval '\''$striplib \$dldir/$dlname'\'' || exit \$?;
+ fi'
+ postuninstall_cmds='dldll=`$SHELL 2>&1 -c '\''. $file; echo \$dlname'\''`~
+ dlpath=$dir/\$dldll~
+ $RM \$dlpath'
+ shlibpath_overrides_runpath=yes
+
+ case $host_os in
+ cygwin*)
+ # Cygwin DLLs use 'cyg' prefix rather than 'lib'
+ soname_spec='`echo ${libname} | sed -e 's/^lib/cyg/'``echo ${release} | $SED -e 's/[.]/-/g'`${versuffix}${shared_ext}'
+ sys_lib_search_path_spec="/usr/lib /lib/w32api /lib /usr/local/lib"
+ ;;
+ mingw* | cegcc*)
+ # MinGW DLLs use traditional 'lib' prefix
+ soname_spec='${libname}`echo ${release} | $SED -e 's/[.]/-/g'`${versuffix}${shared_ext}'
+ sys_lib_search_path_spec=`$CC -print-search-dirs | $GREP "^libraries:" | $SED -e "s/^libraries://" -e "s,=/,/,g"`
+ if $ECHO "$sys_lib_search_path_spec" | $GREP ';[c-zC-Z]:/' >/dev/null; then
+ # It is most probably a Windows format PATH printed by
+ # mingw gcc, but we are running on Cygwin. Gcc prints its search
+ # path with ; separators, and with drive letters. We can handle the
+ # drive letters (cygwin fileutils understands them), so leave them,
+ # especially as we might pass files found there to a mingw objdump,
+ # which wouldn't understand a cygwinified path. Ahh.
+ sys_lib_search_path_spec=`$ECHO "$sys_lib_search_path_spec" | $SED -e 's/;/ /g'`
+ else
+ sys_lib_search_path_spec=`$ECHO "$sys_lib_search_path_spec" | $SED -e "s/$PATH_SEPARATOR/ /g"`
+ fi
+ ;;
+ pw32*)
+ # pw32 DLLs use 'pw' prefix rather than 'lib'
+ library_names_spec='`echo ${libname} | sed -e 's/^lib/pw/'``echo ${release} | $SED -e 's/[.]/-/g'`${versuffix}${shared_ext}'
+ ;;
+ esac
+ ;;
+
+ *)
+ library_names_spec='${libname}`echo ${release} | $SED -e 's/[.]/-/g'`${versuffix}${shared_ext} $libname.lib'
+ ;;
+ esac
+ dynamic_linker='Win32 ld.exe'
+ # FIXME: first we should search . and the directory the executable is in
+ shlibpath_var=PATH
+ ;;
+
+darwin* | rhapsody*)
+ dynamic_linker="$host_os dyld"
+ version_type=darwin
+ need_lib_prefix=no
+ need_version=no
+ library_names_spec='${libname}${release}${major}$shared_ext ${libname}$shared_ext'
+ soname_spec='${libname}${release}${major}$shared_ext'
+ shlibpath_overrides_runpath=yes
+ shlibpath_var=DYLD_LIBRARY_PATH
+ shrext_cmds='`test .$module = .yes && echo .so || echo .dylib`'
+
+ sys_lib_search_path_spec="$sys_lib_search_path_spec /usr/local/lib"
+ sys_lib_dlsearch_path_spec='/usr/local/lib /lib /usr/lib'
+ ;;
+
+dgux*)
+ version_type=linux
+ need_lib_prefix=no
+ need_version=no
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname$shared_ext'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ shlibpath_var=LD_LIBRARY_PATH
+ ;;
+
+freebsd1*)
+ dynamic_linker=no
+ ;;
+
+freebsd* | dragonfly*)
+ # DragonFly does not have aout. When/if they implement a new
+ # versioning mechanism, adjust this.
+ if test -x /usr/bin/objformat; then
+ objformat=`/usr/bin/objformat`
+ else
+ case $host_os in
+ freebsd[123]*) objformat=aout ;;
+ *) objformat=elf ;;
+ esac
+ fi
+ version_type=freebsd-$objformat
+ case $version_type in
+ freebsd-elf*)
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext} $libname${shared_ext}'
+ need_version=no
+ need_lib_prefix=no
+ ;;
+ freebsd-*)
+ library_names_spec='${libname}${release}${shared_ext}$versuffix $libname${shared_ext}$versuffix'
+ need_version=yes
+ ;;
+ esac
+ shlibpath_var=LD_LIBRARY_PATH
+ case $host_os in
+ freebsd2*)
+ shlibpath_overrides_runpath=yes
+ ;;
+ freebsd3.[01]* | freebsdelf3.[01]*)
+ shlibpath_overrides_runpath=yes
+ hardcode_into_libs=yes
+ ;;
+ freebsd3.[2-9]* | freebsdelf3.[2-9]* | \
+ freebsd4.[0-5] | freebsdelf4.[0-5] | freebsd4.1.1 | freebsdelf4.1.1)
+ shlibpath_overrides_runpath=no
+ hardcode_into_libs=yes
+ ;;
+ *) # from 4.6 on, and DragonFly
+ shlibpath_overrides_runpath=yes
+ hardcode_into_libs=yes
+ ;;
+ esac
+ ;;
+
+gnu*)
+ version_type=linux
+ need_lib_prefix=no
+ need_version=no
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}${major} ${libname}${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ shlibpath_var=LD_LIBRARY_PATH
+ hardcode_into_libs=yes
+ ;;
+
+hpux9* | hpux10* | hpux11*)
+ # Give a soname corresponding to the major version so that dld.sl refuses to
+ # link against other versions.
+ version_type=sunos
+ need_lib_prefix=no
+ need_version=no
+ case $host_cpu in
+ ia64*)
+ shrext_cmds='.so'
+ hardcode_into_libs=yes
+ dynamic_linker="$host_os dld.so"
+ shlibpath_var=LD_LIBRARY_PATH
+ shlibpath_overrides_runpath=yes # Unless +noenvvar is specified.
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ if test "X$HPUX_IA64_MODE" = X32; then
+ sys_lib_search_path_spec="/usr/lib/hpux32 /usr/local/lib/hpux32 /usr/local/lib"
+ else
+ sys_lib_search_path_spec="/usr/lib/hpux64 /usr/local/lib/hpux64"
+ fi
+ sys_lib_dlsearch_path_spec=$sys_lib_search_path_spec
+ ;;
+ hppa*64*)
+ shrext_cmds='.sl'
+ hardcode_into_libs=yes
+ dynamic_linker="$host_os dld.sl"
+ shlibpath_var=LD_LIBRARY_PATH # How should we handle SHLIB_PATH
+ shlibpath_overrides_runpath=yes # Unless +noenvvar is specified.
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ sys_lib_search_path_spec="/usr/lib/pa20_64 /usr/ccs/lib/pa20_64"
+ sys_lib_dlsearch_path_spec=$sys_lib_search_path_spec
+ ;;
+ *)
+ shrext_cmds='.sl'
+ dynamic_linker="$host_os dld.sl"
+ shlibpath_var=SHLIB_PATH
+ shlibpath_overrides_runpath=no # +s is required to enable SHLIB_PATH
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ ;;
+ esac
+ # HP-UX runs *really* slowly unless shared libraries are mode 555.
+ postinstall_cmds='chmod 555 $lib'
+ ;;
+
+interix[3-9]*)
+ version_type=linux
+ need_lib_prefix=no
+ need_version=no
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major ${libname}${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ dynamic_linker='Interix 3.x ld.so.1 (PE, like ELF)'
+ shlibpath_var=LD_LIBRARY_PATH
+ shlibpath_overrides_runpath=no
+ hardcode_into_libs=yes
+ ;;
+
+irix5* | irix6* | nonstopux*)
+ case $host_os in
+ nonstopux*) version_type=nonstopux ;;
+ *)
+ if test "$lt_cv_prog_gnu_ld" = yes; then
+ version_type=linux
+ else
+ version_type=irix
+ fi ;;
+ esac
+ need_lib_prefix=no
+ need_version=no
+ soname_spec='${libname}${release}${shared_ext}$major'
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major ${libname}${release}${shared_ext} $libname${shared_ext}'
+ case $host_os in
+ irix5* | nonstopux*)
+ libsuff= shlibsuff=
+ ;;
+ *)
+ case $LD in # libtool.m4 will add one of these switches to LD
+ *-32|*"-32 "|*-melf32bsmip|*"-melf32bsmip ")
+ libsuff= shlibsuff= libmagic=32-bit;;
+ *-n32|*"-n32 "|*-melf32bmipn32|*"-melf32bmipn32 ")
+ libsuff=32 shlibsuff=N32 libmagic=N32;;
+ *-64|*"-64 "|*-melf64bmip|*"-melf64bmip ")
+ libsuff=64 shlibsuff=64 libmagic=64-bit;;
+ *) libsuff= shlibsuff= libmagic=never-match;;
+ esac
+ ;;
+ esac
+ shlibpath_var=LD_LIBRARY${shlibsuff}_PATH
+ shlibpath_overrides_runpath=no
+ sys_lib_search_path_spec="/usr/lib${libsuff} /lib${libsuff} /usr/local/lib${libsuff}"
+ sys_lib_dlsearch_path_spec="/usr/lib${libsuff} /lib${libsuff}"
+ hardcode_into_libs=yes
+ ;;
+
+# No shared lib support for Linux oldld, aout, or coff.
+linux*oldld* | linux*aout* | linux*coff*)
+ dynamic_linker=no
+ ;;
+
+# This must be Linux ELF.
+linux* | k*bsd*-gnu)
+ version_type=linux
+ need_lib_prefix=no
+ need_version=no
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ finish_cmds='PATH="\$PATH:/sbin" ldconfig -n $libdir'
+ shlibpath_var=LD_LIBRARY_PATH
+ shlibpath_overrides_runpath=no
+ # Some binutils ld are patched to set DT_RUNPATH
+ save_LDFLAGS=$LDFLAGS
+ save_libdir=$libdir
+ eval "libdir=/foo; wl=\"$lt_prog_compiler_wl\"; \
+ LDFLAGS=\"\$LDFLAGS $hardcode_libdir_flag_spec\""
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+int
+main ()
+{
+
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+ if ($OBJDUMP -p conftest$ac_exeext) 2>/dev/null | grep "RUNPATH.*$libdir" >/dev/null; then :
+ shlibpath_overrides_runpath=yes
+fi
+fi
+rm -f core conftest.err conftest.$ac_objext \
+ conftest$ac_exeext conftest.$ac_ext
+ LDFLAGS=$save_LDFLAGS
+ libdir=$save_libdir
+
+ # This implies no fast_install, which is unacceptable.
+ # Some rework will be needed to allow for fast_install
+ # before this can be enabled.
+ hardcode_into_libs=yes
+
+ # Append ld.so.conf contents to the search path
+ if test -f /etc/ld.so.conf; then
+ lt_ld_extra=`awk '/^include / { system(sprintf("cd /etc; cat %s 2>/dev/null", \$2)); skip = 1; } { if (!skip) print \$0; skip = 0; }' < /etc/ld.so.conf | $SED -e 's/#.*//;/^[ ]*hwcap[ ]/d;s/[:, ]/ /g;s/=[^=]*$//;s/=[^= ]* / /g;/^$/d' | tr '\n' ' '`
+ sys_lib_dlsearch_path_spec="/lib /usr/lib $lt_ld_extra"
+ fi
+
+ # We used to test for /lib/ld.so.1 and disable shared libraries on
+ # powerpc, because MkLinux only supported shared libraries with the
+ # GNU dynamic linker. Since this was broken with cross compilers,
+ # most powerpc-linux boxes support dynamic linking these days and
+ # people can always --disable-shared, the test was removed, and we
+ # assume the GNU/Linux dynamic linker is in use.
+ dynamic_linker='GNU/Linux ld.so'
+ ;;
+
+netbsd*)
+ version_type=sunos
+ need_lib_prefix=no
+ need_version=no
+ if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${shared_ext}$versuffix'
+ finish_cmds='PATH="\$PATH:/sbin" ldconfig -m $libdir'
+ dynamic_linker='NetBSD (a.out) ld.so'
+ else
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major ${libname}${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ dynamic_linker='NetBSD ld.elf_so'
+ fi
+ shlibpath_var=LD_LIBRARY_PATH
+ shlibpath_overrides_runpath=yes
+ hardcode_into_libs=yes
+ ;;
+
+newsos6)
+ version_type=linux
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ shlibpath_var=LD_LIBRARY_PATH
+ shlibpath_overrides_runpath=yes
+ ;;
+
+*nto* | *qnx*)
+ version_type=qnx
+ need_lib_prefix=no
+ need_version=no
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ shlibpath_var=LD_LIBRARY_PATH
+ shlibpath_overrides_runpath=no
+ hardcode_into_libs=yes
+ dynamic_linker='ldqnx.so'
+ ;;
+
+openbsd*)
+ version_type=sunos
+ sys_lib_dlsearch_path_spec="/usr/lib"
+ need_lib_prefix=no
+ # Some older versions of OpenBSD (3.3 at least) *do* need versioned libs.
+ case $host_os in
+ openbsd3.3 | openbsd3.3.*) need_version=yes ;;
+ *) need_version=no ;;
+ esac
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${shared_ext}$versuffix'
+ finish_cmds='PATH="\$PATH:/sbin" ldconfig -m $libdir'
+ shlibpath_var=LD_LIBRARY_PATH
+ if test -z "`echo __ELF__ | $CC -E - | $GREP __ELF__`" || test "$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
+ case $host_os in
+ openbsd2.[89] | openbsd2.[89].*)
+ shlibpath_overrides_runpath=no
+ ;;
+ *)
+ shlibpath_overrides_runpath=yes
+ ;;
+ esac
+ else
+ shlibpath_overrides_runpath=yes
+ fi
+ ;;
+
+os2*)
+ libname_spec='$name'
+ shrext_cmds=".dll"
+ need_lib_prefix=no
+ library_names_spec='$libname${shared_ext} $libname.a'
+ dynamic_linker='OS/2 ld.exe'
+ shlibpath_var=LIBPATH
+ ;;
+
+osf3* | osf4* | osf5*)
+ version_type=osf
+ need_lib_prefix=no
+ need_version=no
+ soname_spec='${libname}${release}${shared_ext}$major'
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ shlibpath_var=LD_LIBRARY_PATH
+ sys_lib_search_path_spec="/usr/shlib /usr/ccs/lib /usr/lib/cmplrs/cc /usr/lib /usr/local/lib /var/shlib"
+ sys_lib_dlsearch_path_spec="$sys_lib_search_path_spec"
+ ;;
+
+rdos*)
+ dynamic_linker=no
+ ;;
+
+solaris*)
+ version_type=linux
+ need_lib_prefix=no
+ need_version=no
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ shlibpath_var=LD_LIBRARY_PATH
+ shlibpath_overrides_runpath=yes
+ hardcode_into_libs=yes
+ # ldd complains unless libraries are executable
+ postinstall_cmds='chmod +x $lib'
+ ;;
+
+sunos4*)
+ version_type=sunos
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${shared_ext}$versuffix'
+ finish_cmds='PATH="\$PATH:/usr/etc" ldconfig $libdir'
+ shlibpath_var=LD_LIBRARY_PATH
+ shlibpath_overrides_runpath=yes
+ if test "$with_gnu_ld" = yes; then
+ need_lib_prefix=no
+ fi
+ need_version=yes
+ ;;
+
+sysv4 | sysv4.3*)
+ version_type=linux
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ shlibpath_var=LD_LIBRARY_PATH
+ case $host_vendor in
+ sni)
+ shlibpath_overrides_runpath=no
+ need_lib_prefix=no
+ runpath_var=LD_RUN_PATH
+ ;;
+ siemens)
+ need_lib_prefix=no
+ ;;
+ motorola)
+ need_lib_prefix=no
+ need_version=no
+ shlibpath_overrides_runpath=no
+ sys_lib_search_path_spec='/lib /usr/lib /usr/ccs/lib'
+ ;;
+ esac
+ ;;
+
+sysv4*MP*)
+ if test -d /usr/nec ;then
+ version_type=linux
+ library_names_spec='$libname${shared_ext}.$versuffix $libname${shared_ext}.$major $libname${shared_ext}'
+ soname_spec='$libname${shared_ext}.$major'
+ shlibpath_var=LD_LIBRARY_PATH
+ fi
+ ;;
+
+sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX* | sysv4*uw2*)
+ version_type=freebsd-elf
+ need_lib_prefix=no
+ need_version=no
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext} $libname${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ shlibpath_var=LD_LIBRARY_PATH
+ shlibpath_overrides_runpath=yes
+ hardcode_into_libs=yes
+ if test "$with_gnu_ld" = yes; then
+ sys_lib_search_path_spec='/usr/local/lib /usr/gnu/lib /usr/ccs/lib /usr/lib /lib'
+ else
+ sys_lib_search_path_spec='/usr/ccs/lib /usr/lib'
+ case $host_os in
+ sco3.2v5*)
+ sys_lib_search_path_spec="$sys_lib_search_path_spec /lib"
+ ;;
+ esac
+ fi
+ sys_lib_dlsearch_path_spec='/usr/lib'
+ ;;
+
+tpf*)
+ # TPF is a cross-target only. Preferred cross-host = GNU/Linux.
+ version_type=linux
+ need_lib_prefix=no
+ need_version=no
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ shlibpath_var=LD_LIBRARY_PATH
+ shlibpath_overrides_runpath=no
+ hardcode_into_libs=yes
+ ;;
+
+uts4*)
+ version_type=linux
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ shlibpath_var=LD_LIBRARY_PATH
+ ;;
+
+*)
+ dynamic_linker=no
+ ;;
+esac
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $dynamic_linker" >&5
+$as_echo "$dynamic_linker" >&6; }
+test "$dynamic_linker" = no && can_build_shared=no
+
+variables_saved_for_relink="PATH $shlibpath_var $runpath_var"
+if test "$GCC" = yes; then
+ variables_saved_for_relink="$variables_saved_for_relink GCC_EXEC_PREFIX COMPILER_PATH LIBRARY_PATH"
+fi
+
+if test "${lt_cv_sys_lib_search_path_spec+set}" = set; then
+ sys_lib_search_path_spec="$lt_cv_sys_lib_search_path_spec"
+fi
+if test "${lt_cv_sys_lib_dlsearch_path_spec+set}" = set; then
+ sys_lib_dlsearch_path_spec="$lt_cv_sys_lib_dlsearch_path_spec"
+fi
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking how to hardcode library paths into programs" >&5
+$as_echo_n "checking how to hardcode library paths into programs... " >&6; }
+hardcode_action=
+if test -n "$hardcode_libdir_flag_spec" ||
+ test -n "$runpath_var" ||
+ test "X$hardcode_automatic" = "Xyes" ; then
+
+ # We can hardcode non-existent directories.
+ if test "$hardcode_direct" != no &&
+ # If the only mechanism to avoid hardcoding is shlibpath_var, we
+ # have to relink, otherwise we might link with an installed library
+ # when we should be linking with a yet-to-be-installed one
+ ## test "$_LT_TAGVAR(hardcode_shlibpath_var, )" != no &&
+ test "$hardcode_minus_L" != no; then
+ # Linking always hardcodes the temporary library directory.
+ hardcode_action=relink
+ else
+ # We can link without hardcoding, and we can hardcode nonexisting dirs.
+ hardcode_action=immediate
+ fi
+else
+ # We cannot hardcode anything, or else we can only hardcode existing
+ # directories.
+ hardcode_action=unsupported
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $hardcode_action" >&5
+$as_echo "$hardcode_action" >&6; }
+
+if test "$hardcode_action" = relink ||
+ test "$inherit_rpath" = yes; then
+ # Fast installation is not supported
+ enable_fast_install=no
+elif test "$shlibpath_overrides_runpath" = yes ||
+ test "$enable_shared" = no; then
+ # Fast installation is not necessary
+ enable_fast_install=needless
+fi
+
+
+
+
+
+
+ if test "x$enable_dlopen" != xyes; then
+ enable_dlopen=unknown
+ enable_dlopen_self=unknown
+ enable_dlopen_self_static=unknown
+else
+ lt_cv_dlopen=no
+ lt_cv_dlopen_libs=
+
+ case $host_os in
+ beos*)
+ lt_cv_dlopen="load_add_on"
+ lt_cv_dlopen_libs=
+ lt_cv_dlopen_self=yes
+ ;;
+
+ mingw* | pw32* | cegcc*)
+ lt_cv_dlopen="LoadLibrary"
+ lt_cv_dlopen_libs=
+ ;;
+
+ cygwin*)
+ lt_cv_dlopen="dlopen"
+ lt_cv_dlopen_libs=
+ ;;
+
+ darwin*)
+ # if libdl is installed we need to link against it
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for dlopen in -ldl" >&5
+$as_echo_n "checking for dlopen in -ldl... " >&6; }
+if test "${ac_cv_lib_dl_dlopen+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ ac_check_lib_save_LIBS=$LIBS
+LIBS="-ldl $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+/* Override any GCC internal prototype to avoid an error.
+ Use char because int might match the return type of a GCC
+ builtin and then its argument prototype would still apply. */
+#ifdef __cplusplus
+extern "C"
+#endif
+char dlopen ();
+int
+main ()
+{
+return dlopen ();
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+ ac_cv_lib_dl_dlopen=yes
+else
+ ac_cv_lib_dl_dlopen=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+ conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_dl_dlopen" >&5
+$as_echo "$ac_cv_lib_dl_dlopen" >&6; }
+if test "x$ac_cv_lib_dl_dlopen" = x""yes; then :
+ lt_cv_dlopen="dlopen" lt_cv_dlopen_libs="-ldl"
+else
+
+ lt_cv_dlopen="dyld"
+ lt_cv_dlopen_libs=
+ lt_cv_dlopen_self=yes
+
+fi
+
+ ;;
+
+ *)
+ ac_fn_c_check_func "$LINENO" "shl_load" "ac_cv_func_shl_load"
+if test "x$ac_cv_func_shl_load" = x""yes; then :
+ lt_cv_dlopen="shl_load"
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for shl_load in -ldld" >&5
+$as_echo_n "checking for shl_load in -ldld... " >&6; }
+if test "${ac_cv_lib_dld_shl_load+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ ac_check_lib_save_LIBS=$LIBS
+LIBS="-ldld $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+/* Override any GCC internal prototype to avoid an error.
+ Use char because int might match the return type of a GCC
+ builtin and then its argument prototype would still apply. */
+#ifdef __cplusplus
+extern "C"
+#endif
+char shl_load ();
+int
+main ()
+{
+return shl_load ();
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+ ac_cv_lib_dld_shl_load=yes
+else
+ ac_cv_lib_dld_shl_load=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+ conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_dld_shl_load" >&5
+$as_echo "$ac_cv_lib_dld_shl_load" >&6; }
+if test "x$ac_cv_lib_dld_shl_load" = x""yes; then :
+ lt_cv_dlopen="shl_load" lt_cv_dlopen_libs="-ldld"
+else
+ ac_fn_c_check_func "$LINENO" "dlopen" "ac_cv_func_dlopen"
+if test "x$ac_cv_func_dlopen" = x""yes; then :
+ lt_cv_dlopen="dlopen"
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for dlopen in -ldl" >&5
+$as_echo_n "checking for dlopen in -ldl... " >&6; }
+if test "${ac_cv_lib_dl_dlopen+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ ac_check_lib_save_LIBS=$LIBS
+LIBS="-ldl $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+/* Override any GCC internal prototype to avoid an error.
+ Use char because int might match the return type of a GCC
+ builtin and then its argument prototype would still apply. */
+#ifdef __cplusplus
+extern "C"
+#endif
+char dlopen ();
+int
+main ()
+{
+return dlopen ();
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+ ac_cv_lib_dl_dlopen=yes
+else
+ ac_cv_lib_dl_dlopen=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+ conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_dl_dlopen" >&5
+$as_echo "$ac_cv_lib_dl_dlopen" >&6; }
+if test "x$ac_cv_lib_dl_dlopen" = x""yes; then :
+ lt_cv_dlopen="dlopen" lt_cv_dlopen_libs="-ldl"
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for dlopen in -lsvld" >&5
+$as_echo_n "checking for dlopen in -lsvld... " >&6; }
+if test "${ac_cv_lib_svld_dlopen+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ ac_check_lib_save_LIBS=$LIBS
+LIBS="-lsvld $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+/* Override any GCC internal prototype to avoid an error.
+ Use char because int might match the return type of a GCC
+ builtin and then its argument prototype would still apply. */
+#ifdef __cplusplus
+extern "C"
+#endif
+char dlopen ();
+int
+main ()
+{
+return dlopen ();
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+ ac_cv_lib_svld_dlopen=yes
+else
+ ac_cv_lib_svld_dlopen=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+ conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_svld_dlopen" >&5
+$as_echo "$ac_cv_lib_svld_dlopen" >&6; }
+if test "x$ac_cv_lib_svld_dlopen" = x""yes; then :
+ lt_cv_dlopen="dlopen" lt_cv_dlopen_libs="-lsvld"
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for dld_link in -ldld" >&5
+$as_echo_n "checking for dld_link in -ldld... " >&6; }
+if test "${ac_cv_lib_dld_dld_link+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ ac_check_lib_save_LIBS=$LIBS
+LIBS="-ldld $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+/* Override any GCC internal prototype to avoid an error.
+ Use char because int might match the return type of a GCC
+ builtin and then its argument prototype would still apply. */
+#ifdef __cplusplus
+extern "C"
+#endif
+char dld_link ();
+int
+main ()
+{
+return dld_link ();
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+ ac_cv_lib_dld_dld_link=yes
+else
+ ac_cv_lib_dld_dld_link=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+ conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_dld_dld_link" >&5
+$as_echo "$ac_cv_lib_dld_dld_link" >&6; }
+if test "x$ac_cv_lib_dld_dld_link" = x""yes; then :
+ lt_cv_dlopen="dld_link" lt_cv_dlopen_libs="-ldld"
+fi
+
+
+fi
+
+
+fi
+
+
+fi
+
+
+fi
+
+
+fi
+
+ ;;
+ esac
+
+ if test "x$lt_cv_dlopen" != xno; then
+ enable_dlopen=yes
+ else
+ enable_dlopen=no
+ fi
+
+ case $lt_cv_dlopen in
+ dlopen)
+ save_CPPFLAGS="$CPPFLAGS"
+ test "x$ac_cv_header_dlfcn_h" = xyes && CPPFLAGS="$CPPFLAGS -DHAVE_DLFCN_H"
+
+ save_LDFLAGS="$LDFLAGS"
+ wl=$lt_prog_compiler_wl eval LDFLAGS=\"\$LDFLAGS $export_dynamic_flag_spec\"
+
+ save_LIBS="$LIBS"
+ LIBS="$lt_cv_dlopen_libs $LIBS"
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether a program can dlopen itself" >&5
+$as_echo_n "checking whether a program can dlopen itself... " >&6; }
+if test "${lt_cv_dlopen_self+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test "$cross_compiling" = yes; then :
+ lt_cv_dlopen_self=cross
+else
+ lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
+ lt_status=$lt_dlunknown
+ cat > conftest.$ac_ext <<_LT_EOF
+#line 10604 "configure"
+#include "confdefs.h"
+
+#if HAVE_DLFCN_H
+#include <dlfcn.h>
+#endif
+
+#include <stdio.h>
+
+#ifdef RTLD_GLOBAL
+# define LT_DLGLOBAL RTLD_GLOBAL
+#else
+# ifdef DL_GLOBAL
+# define LT_DLGLOBAL DL_GLOBAL
+# else
+# define LT_DLGLOBAL 0
+# endif
+#endif
+
+/* We may have to define LT_DLLAZY_OR_NOW in the command line if we
+ find out it does not work in some platform. */
+#ifndef LT_DLLAZY_OR_NOW
+# ifdef RTLD_LAZY
+# define LT_DLLAZY_OR_NOW RTLD_LAZY
+# else
+# ifdef DL_LAZY
+# define LT_DLLAZY_OR_NOW DL_LAZY
+# else
+# ifdef RTLD_NOW
+# define LT_DLLAZY_OR_NOW RTLD_NOW
+# else
+# ifdef DL_NOW
+# define LT_DLLAZY_OR_NOW DL_NOW
+# else
+# define LT_DLLAZY_OR_NOW 0
+# endif
+# endif
+# endif
+# endif
+#endif
+
+void fnord() { int i=42;}
+int main ()
+{
+ void *self = dlopen (0, LT_DLGLOBAL|LT_DLLAZY_OR_NOW);
+ int status = $lt_dlunknown;
+
+ if (self)
+ {
+ if (dlsym (self,"fnord")) status = $lt_dlno_uscore;
+ else if (dlsym( self,"_fnord")) status = $lt_dlneed_uscore;
+ /* dlclose (self); */
+ }
+ else
+ puts (dlerror ());
+
+ return status;
+}
+_LT_EOF
+ if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
+ (eval $ac_link) 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; } && test -s conftest${ac_exeext} 2>/dev/null; then
+ (./conftest; exit; ) >&5 2>/dev/null
+ lt_status=$?
+ case x$lt_status in
+ x$lt_dlno_uscore) lt_cv_dlopen_self=yes ;;
+ x$lt_dlneed_uscore) lt_cv_dlopen_self=yes ;;
+ x$lt_dlunknown|x*) lt_cv_dlopen_self=no ;;
+ esac
+ else :
+ # compilation failed
+ lt_cv_dlopen_self=no
+ fi
+fi
+rm -fr conftest*
+
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_dlopen_self" >&5
+$as_echo "$lt_cv_dlopen_self" >&6; }
+
+ if test "x$lt_cv_dlopen_self" = xyes; then
+ wl=$lt_prog_compiler_wl eval LDFLAGS=\"\$LDFLAGS $lt_prog_compiler_static\"
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether a statically linked program can dlopen itself" >&5
+$as_echo_n "checking whether a statically linked program can dlopen itself... " >&6; }
+if test "${lt_cv_dlopen_self_static+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test "$cross_compiling" = yes; then :
+ lt_cv_dlopen_self_static=cross
+else
+ lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
+ lt_status=$lt_dlunknown
+ cat > conftest.$ac_ext <<_LT_EOF
+#line 10700 "configure"
+#include "confdefs.h"
+
+#if HAVE_DLFCN_H
+#include <dlfcn.h>
+#endif
+
+#include <stdio.h>
+
+#ifdef RTLD_GLOBAL
+# define LT_DLGLOBAL RTLD_GLOBAL
+#else
+# ifdef DL_GLOBAL
+# define LT_DLGLOBAL DL_GLOBAL
+# else
+# define LT_DLGLOBAL 0
+# endif
+#endif
+
+/* We may have to define LT_DLLAZY_OR_NOW in the command line if we
+ find out it does not work in some platform. */
+#ifndef LT_DLLAZY_OR_NOW
+# ifdef RTLD_LAZY
+# define LT_DLLAZY_OR_NOW RTLD_LAZY
+# else
+# ifdef DL_LAZY
+# define LT_DLLAZY_OR_NOW DL_LAZY
+# else
+# ifdef RTLD_NOW
+# define LT_DLLAZY_OR_NOW RTLD_NOW
+# else
+# ifdef DL_NOW
+# define LT_DLLAZY_OR_NOW DL_NOW
+# else
+# define LT_DLLAZY_OR_NOW 0
+# endif
+# endif
+# endif
+# endif
+#endif
+
+void fnord() { int i=42;}
+int main ()
+{
+ void *self = dlopen (0, LT_DLGLOBAL|LT_DLLAZY_OR_NOW);
+ int status = $lt_dlunknown;
+
+ if (self)
+ {
+ if (dlsym (self,"fnord")) status = $lt_dlno_uscore;
+ else if (dlsym( self,"_fnord")) status = $lt_dlneed_uscore;
+ /* dlclose (self); */
+ }
+ else
+ puts (dlerror ());
+
+ return status;
+}
+_LT_EOF
+ if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
+ (eval $ac_link) 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; } && test -s conftest${ac_exeext} 2>/dev/null; then
+ (./conftest; exit; ) >&5 2>/dev/null
+ lt_status=$?
+ case x$lt_status in
+ x$lt_dlno_uscore) lt_cv_dlopen_self_static=yes ;;
+ x$lt_dlneed_uscore) lt_cv_dlopen_self_static=yes ;;
+ x$lt_dlunknown|x*) lt_cv_dlopen_self_static=no ;;
+ esac
+ else :
+ # compilation failed
+ lt_cv_dlopen_self_static=no
+ fi
+fi
+rm -fr conftest*
+
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_dlopen_self_static" >&5
+$as_echo "$lt_cv_dlopen_self_static" >&6; }
+ fi
+
+ CPPFLAGS="$save_CPPFLAGS"
+ LDFLAGS="$save_LDFLAGS"
+ LIBS="$save_LIBS"
+ ;;
+ esac
+
+ case $lt_cv_dlopen_self in
+ yes|no) enable_dlopen_self=$lt_cv_dlopen_self ;;
+ *) enable_dlopen_self=unknown ;;
+ esac
+
+ case $lt_cv_dlopen_self_static in
+ yes|no) enable_dlopen_self_static=$lt_cv_dlopen_self_static ;;
+ *) enable_dlopen_self_static=unknown ;;
+ esac
+fi
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+striplib=
+old_striplib=
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether stripping libraries is possible" >&5
+$as_echo_n "checking whether stripping libraries is possible... " >&6; }
+if test -n "$STRIP" && $STRIP -V 2>&1 | $GREP "GNU strip" >/dev/null; then
+ test -z "$old_striplib" && old_striplib="$STRIP --strip-debug"
+ test -z "$striplib" && striplib="$STRIP --strip-unneeded"
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+else
+# FIXME - insert some real tests, host_os isn't really good enough
+ case $host_os in
+ darwin*)
+ if test -n "$STRIP" ; then
+ striplib="$STRIP -x"
+ old_striplib="$STRIP -S"
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+ else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+ fi
+ ;;
+ *)
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+ ;;
+ esac
+fi
+
+
+
+
+
+
+
+
+
+
+
+
+ # Report which library types will actually be built
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking if libtool supports shared libraries" >&5
+$as_echo_n "checking if libtool supports shared libraries... " >&6; }
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $can_build_shared" >&5
+$as_echo "$can_build_shared" >&6; }
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether to build shared libraries" >&5
+$as_echo_n "checking whether to build shared libraries... " >&6; }
+ test "$can_build_shared" = "no" && enable_shared=no
+
+ # On AIX, shared libraries and static libraries use the same namespace, and
+ # are all built from PIC.
+ case $host_os in
+ aix3*)
+ test "$enable_shared" = yes && enable_static=no
+ if test -n "$RANLIB"; then
+ archive_cmds="$archive_cmds~\$RANLIB \$lib"
+ postinstall_cmds='$RANLIB $lib'
+ fi
+ ;;
+
+ aix[4-9]*)
+ if test "$host_cpu" != ia64 && test "$aix_use_runtimelinking" = no ; then
+ test "$enable_shared" = yes && enable_static=no
+ fi
+ ;;
+ esac
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $enable_shared" >&5
+$as_echo "$enable_shared" >&6; }
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether to build static libraries" >&5
+$as_echo_n "checking whether to build static libraries... " >&6; }
+ # Make sure either enable_shared or enable_static is yes.
+ test "$enable_shared" = yes || enable_static=yes
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $enable_static" >&5
+$as_echo "$enable_static" >&6; }
+
+
+
+
+fi
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+CC="$lt_save_CC"
+
+
+
+
+
+
+
+
+
+
+
+
+
+ ac_config_commands="$ac_config_commands libtool"
+
+
+
+
+# Only expand once:
+
+
+
+# Checks for header files.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for ANSI C header files" >&5
+$as_echo_n "checking for ANSI C header files... " >&6; }
+if test "${ac_cv_header_stdc+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+#include <float.h>
+
+int
+main ()
+{
+
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+ ac_cv_header_stdc=yes
+else
+ ac_cv_header_stdc=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+if test $ac_cv_header_stdc = yes; then
+ # SunOS 4.x string.h does not declare mem*, contrary to ANSI.
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+#include <string.h>
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+ $EGREP "memchr" >/dev/null 2>&1; then :
+
+else
+ ac_cv_header_stdc=no
+fi
+rm -f conftest*
+
+fi
+
+if test $ac_cv_header_stdc = yes; then
+ # ISC 2.0.2 stdlib.h does not declare free, contrary to ANSI.
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+#include <stdlib.h>
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+ $EGREP "free" >/dev/null 2>&1; then :
+
+else
+ ac_cv_header_stdc=no
+fi
+rm -f conftest*
+
+fi
+
+if test $ac_cv_header_stdc = yes; then
+ # /bin/cc in Irix-4.0.5 gets non-ANSI ctype macros unless using -ansi.
+ if test "$cross_compiling" = yes; then :
+ :
+else
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+#include <ctype.h>
+#include <stdlib.h>
+#if ((' ' & 0x0FF) == 0x020)
+# define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
+# define TOUPPER(c) (ISLOWER(c) ? 'A' + ((c) - 'a') : (c))
+#else
+# define ISLOWER(c) \
+ (('a' <= (c) && (c) <= 'i') \
+ || ('j' <= (c) && (c) <= 'r') \
+ || ('s' <= (c) && (c) <= 'z'))
+# define TOUPPER(c) (ISLOWER(c) ? ((c) | 0x40) : (c))
+#endif
+
+#define XOR(e, f) (((e) && !(f)) || (!(e) && (f)))
+int
+main ()
+{
+ int i;
+ for (i = 0; i < 256; i++)
+ if (XOR (islower (i), ISLOWER (i))
+ || toupper (i) != TOUPPER (i))
+ return 2;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"; then :
+
+else
+ ac_cv_header_stdc=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+ conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_header_stdc" >&5
+$as_echo "$ac_cv_header_stdc" >&6; }
+if test $ac_cv_header_stdc = yes; then
+
+$as_echo "#define STDC_HEADERS 1" >>confdefs.h
+
+fi
+
+for ac_header in malloc.h stdlib.h string.h strings.h
+do :
+ as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
+ac_fn_c_check_header_mongrel "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default"
+eval as_val=\$$as_ac_Header
+ if test "x$as_val" = x""yes; then :
+ cat >>confdefs.h <<_ACEOF
+#define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+
+done
+
+
+# Checks for typedefs, structures, and compiler characteristics.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for an ANSI C-conforming const" >&5
+$as_echo_n "checking for an ANSI C-conforming const... " >&6; }
+if test "${ac_cv_c_const+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+int
+main ()
+{
+/* FIXME: Include the comments suggested by Paul. */
+#ifndef __cplusplus
+ /* Ultrix mips cc rejects this. */
+ typedef int charset[2];
+ const charset cs;
+ /* SunOS 4.1.1 cc rejects this. */
+ char const *const *pcpcc;
+ char **ppc;
+ /* NEC SVR4.0.2 mips cc rejects this. */
+ struct point {int x, y;};
+ static struct point const zero = {0,0};
+ /* AIX XL C 1.02.0.0 rejects this.
+ It does not let you subtract one const X* pointer from another in
+ an arm of an if-expression whose if-part is not a constant
+ expression */
+ const char *g = "string";
+ pcpcc = &g + (g ? g-g : 0);
+ /* HPUX 7.0 cc rejects these. */
+ ++pcpcc;
+ ppc = (char**) pcpcc;
+ pcpcc = (char const *const *) ppc;
+ { /* SCO 3.2v4 cc rejects this. */
+ char *t;
+ char const *s = 0 ? (char *) 0 : (char const *) 0;
+
+ *t++ = 0;
+ if (s) return 0;
+ }
+ { /* Someone thinks the Sun supposedly-ANSI compiler will reject this. */
+ int x[] = {25, 17};
+ const int *foo = &x[0];
+ ++foo;
+ }
+ { /* Sun SC1.0 ANSI compiler rejects this -- but not the above. */
+ typedef const int *iptr;
+ iptr p = 0;
+ ++p;
+ }
+ { /* AIX XL C 1.02.0.0 rejects this saying
+ "k.c", line 2.27: 1506-025 (S) Operand must be a modifiable lvalue. */
+ struct s { int j; const int *ap[3]; };
+ struct s *b; b->j = 5;
+ }
+ { /* ULTRIX-32 V3.1 (Rev 9) vcc rejects this */
+ const int foo = 10;
+ if (!foo) return 0;
+ }
+ return !cs[0] && !zero.x;
+#endif
+
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+ ac_cv_c_const=yes
+else
+ ac_cv_c_const=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_const" >&5
+$as_echo "$ac_cv_c_const" >&6; }
+if test $ac_cv_c_const = no; then
+
+$as_echo "#define const /**/" >>confdefs.h
+
+fi
+
+ac_fn_c_check_type "$LINENO" "size_t" "ac_cv_type_size_t" "$ac_includes_default"
+if test "x$ac_cv_type_size_t" = x""yes; then :
+
+else
+
+cat >>confdefs.h <<_ACEOF
+#define size_t unsigned int
+_ACEOF
+
+fi
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether struct tm is in sys/time.h or time.h" >&5
+$as_echo_n "checking whether struct tm is in sys/time.h or time.h... " >&6; }
+if test "${ac_cv_struct_tm+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+#include <sys/types.h>
+#include <time.h>
+
+int
+main ()
+{
+struct tm tm;
+ int *p = &tm.tm_sec;
+ return !p;
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+ ac_cv_struct_tm=time.h
+else
+ ac_cv_struct_tm=sys/time.h
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_struct_tm" >&5
+$as_echo "$ac_cv_struct_tm" >&6; }
+if test $ac_cv_struct_tm = sys/time.h; then
+
+$as_echo "#define TM_IN_SYS_TIME 1" >>confdefs.h
+
+fi
+
+
+# Checks for library functions.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for working strtod" >&5
+$as_echo_n "checking for working strtod... " >&6; }
+if test "${ac_cv_func_strtod+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test "$cross_compiling" = yes; then :
+ ac_cv_func_strtod=no
+else
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+$ac_includes_default
+#ifndef strtod
+double strtod ();
+#endif
+int
+main()
+{
+ {
+ /* Some versions of Linux strtod mis-parse strings with leading '+'. */
+ char *string = " +69";
+ char *term;
+ double value;
+ value = strtod (string, &term);
+ if (value != 69 || term != (string + 4))
+ return 1;
+ }
+
+ {
+ /* Under Solaris 2.4, strtod returns the wrong value for the
+ terminating character under some conditions. */
+ char *string = "NaN";
+ char *term;
+ strtod (string, &term);
+ if (term != string && *(term - 1) == 0)
+ return 1;
+ }
+ return 0;
+}
+
+_ACEOF
+if ac_fn_c_try_run "$LINENO"; then :
+ ac_cv_func_strtod=yes
+else
+ ac_cv_func_strtod=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+ conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_strtod" >&5
+$as_echo "$ac_cv_func_strtod" >&6; }
+if test $ac_cv_func_strtod = no; then
+ case " $LIBOBJS " in
+ *" strtod.$ac_objext "* ) ;;
+ *) LIBOBJS="$LIBOBJS strtod.$ac_objext"
+ ;;
+esac
+
+ac_fn_c_check_func "$LINENO" "pow" "ac_cv_func_pow"
+if test "x$ac_cv_func_pow" = x""yes; then :
+
+fi
+
+if test $ac_cv_func_pow = no; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for pow in -lm" >&5
+$as_echo_n "checking for pow in -lm... " >&6; }
+if test "${ac_cv_lib_m_pow+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ ac_check_lib_save_LIBS=$LIBS
+LIBS="-lm $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+/* Override any GCC internal prototype to avoid an error.
+ Use char because int might match the return type of a GCC
+ builtin and then its argument prototype would still apply. */
+#ifdef __cplusplus
+extern "C"
+#endif
+char pow ();
+int
+main ()
+{
+return pow ();
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+ ac_cv_lib_m_pow=yes
+else
+ ac_cv_lib_m_pow=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+ conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_m_pow" >&5
+$as_echo "$ac_cv_lib_m_pow" >&6; }
+if test "x$ac_cv_lib_m_pow" = x""yes; then :
+ POW_LIB=-lm
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: cannot find library containing definition of pow" >&5
+$as_echo "$as_me: WARNING: cannot find library containing definition of pow" >&2;}
+fi
+
+fi
+
+fi
+
+for ac_func in memset
+do :
+ ac_fn_c_check_func "$LINENO" "memset" "ac_cv_func_memset"
+if test "x$ac_cv_func_memset" = x""yes; then :
+ cat >>confdefs.h <<_ACEOF
+#define HAVE_MEMSET 1
+_ACEOF
+
+else
+ as_fn_error "memset not found in libc" "$LINENO" 5
+fi
+done
+
+for ac_func in pow
+do :
+ ac_fn_c_check_func "$LINENO" "pow" "ac_cv_func_pow"
+if test "x$ac_cv_func_pow" = x""yes; then :
+ cat >>confdefs.h <<_ACEOF
+#define HAVE_POW 1
+_ACEOF
+
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for pow in -lm" >&5
+$as_echo_n "checking for pow in -lm... " >&6; }
+if test "${ac_cv_lib_m_pow+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ ac_check_lib_save_LIBS=$LIBS
+LIBS="-lm $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+/* Override any GCC internal prototype to avoid an error.
+ Use char because int might match the return type of a GCC
+ builtin and then its argument prototype would still apply. */
+#ifdef __cplusplus
+extern "C"
+#endif
+char pow ();
+int
+main ()
+{
+return pow ();
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+ ac_cv_lib_m_pow=yes
+else
+ ac_cv_lib_m_pow=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+ conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_m_pow" >&5
+$as_echo "$ac_cv_lib_m_pow" >&6; }
+if test "x$ac_cv_lib_m_pow" = x""yes; then :
+ cat >>confdefs.h <<_ACEOF
+#define HAVE_LIBM 1
+_ACEOF
+
+ LIBS="-lm $LIBS"
+
+else
+ as_fn_error "cannot find pow" "$LINENO" 5
+fi
+
+fi
+done
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for zlibVersion in -lz" >&5
+$as_echo_n "checking for zlibVersion in -lz... " >&6; }
+if test "${ac_cv_lib_z_zlibVersion+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ ac_check_lib_save_LIBS=$LIBS
+LIBS="-lz $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+/* Override any GCC internal prototype to avoid an error.
+ Use char because int might match the return type of a GCC
+ builtin and then its argument prototype would still apply. */
+#ifdef __cplusplus
+extern "C"
+#endif
+char zlibVersion ();
+int
+main ()
+{
+return zlibVersion ();
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+ ac_cv_lib_z_zlibVersion=yes
+else
+ ac_cv_lib_z_zlibVersion=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+ conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_z_zlibVersion" >&5
+$as_echo "$ac_cv_lib_z_zlibVersion" >&6; }
+if test "x$ac_cv_lib_z_zlibVersion" = x""yes; then :
+ cat >>confdefs.h <<_ACEOF
+#define HAVE_LIBZ 1
+_ACEOF
+
+ LIBS="-lz $LIBS"
+
+else
+ as_fn_error "zlib not installed" "$LINENO" 5
+fi
+
+
+LIBPNG_DEFINES=-DPNG_CONFIGURE_LIBPNG
+LIBPNG_DEFINES=$LIBPNG_DEFINES
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if libraries can be versioned" >&5
+$as_echo_n "checking if libraries can be versioned... " >&6; }
+GLD=`$LD --help < /dev/null 2>/dev/null | grep version-script`
+if test "$GLD"; then
+ have_ld_version_script=yes
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+else
+ have_ld_version_script=no
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+ { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: *** You have not enabled versioned symbols." >&5
+$as_echo "$as_me: WARNING: *** You have not enabled versioned symbols." >&2;}
+fi
+ if test "$have_ld_version_script" = "yes"; then
+ HAVE_LD_VERSION_SCRIPT_TRUE=
+ HAVE_LD_VERSION_SCRIPT_FALSE='#'
+else
+ HAVE_LD_VERSION_SCRIPT_TRUE='#'
+ HAVE_LD_VERSION_SCRIPT_FALSE=
+fi
+
+
+if test "$have_ld_version_script" = "yes"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for symbol prefix" >&5
+$as_echo_n "checking for symbol prefix... " >&6; }
+ SYMBOL_PREFIX=`echo "PREFIX=__USER_LABEL_PREFIX__" \
+ | ${CPP-${CC-gcc} -E} - 2>&1 \
+ | ${EGREP-grep} "^PREFIX=" \
+ | ${SED-sed} "s:^PREFIX=::"`
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $SYMBOL_PREFIX" >&5
+$as_echo "$SYMBOL_PREFIX" >&6; }
+fi
+
+# Substitutions for .in files
+
+
+
+
+
+# Additional arguments (and substitutions)
+# Allow the pkg-config directory to be set
+
+# Check whether --with-pkgconfigdir was given.
+if test "${with_pkgconfigdir+set}" = set; then :
+ withval=$with_pkgconfigdir; pkgconfigdir=${withval}
+else
+ pkgconfigdir='${libdir}/pkgconfig'
+fi
+
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: pkgconfig directory is ${pkgconfigdir}" >&5
+$as_echo "$as_me: pkgconfig directory is ${pkgconfigdir}" >&6;}
+
+# Make the *-config binary config scripts optional
+
+# Check whether --with-binconfigs was given.
+if test "${with_binconfigs+set}" = set; then :
+ withval=$with_binconfigs; if test "${withval}" = no; then
+ binconfigs=
+ { $as_echo "$as_me:${as_lineno-$LINENO}: libpng-config scripts will not be built" >&5
+$as_echo "$as_me: libpng-config scripts will not be built" >&6;}
+ else
+ binconfigs='${binconfigs}'
+ fi
+else
+ binconfigs='${binconfigs}'
+fi
+
+
+
+# Config files, substituting as above
+ac_config_files="$ac_config_files Makefile libpng.pc:libpng.pc.in"
+
+ac_config_files="$ac_config_files libpng-config:libpng-config.in"
+
+
+cat >confcache <<\_ACEOF
+# This file is a shell script that caches the results of configure
+# tests run on this system so they can be shared between configure
+# scripts and configure runs, see configure's option --config-cache.
+# It is not useful on other systems. If it contains results you don't
+# want to keep, you may remove or edit it.
+#
+# config.status only pays attention to the cache file if you give it
+# the --recheck option to rerun configure.
+#
+# `ac_cv_env_foo' variables (set or unset) will be overridden when
+# loading this file, other *unset* `ac_cv_foo' will be assigned the
+# following values.
+
+_ACEOF
+
+# The following way of writing the cache mishandles newlines in values,
+# but we know of no workaround that is simple, portable, and efficient.
+# So, we kill variables containing newlines.
+# Ultrix sh set writes to stderr and can't be redirected directly,
+# and sets the high bit in the cache file unless we assign to the vars.
+(
+ for ac_var in `(set) 2>&1 | sed -n 's/^\([a-zA-Z_][a-zA-Z0-9_]*\)=.*/\1/p'`; do
+ eval ac_val=\$$ac_var
+ case $ac_val in #(
+ *${as_nl}*)
+ case $ac_var in #(
+ *_cv_*) { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: cache variable $ac_var contains a newline" >&5
+$as_echo "$as_me: WARNING: cache variable $ac_var contains a newline" >&2;} ;;
+ esac
+ case $ac_var in #(
+ _ | IFS | as_nl) ;; #(
+ BASH_ARGV | BASH_SOURCE) eval $ac_var= ;; #(
+ *) { eval $ac_var=; unset $ac_var;} ;;
+ esac ;;
+ esac
+ done
+
+ (set) 2>&1 |
+ case $as_nl`(ac_space=' '; set) 2>&1` in #(
+ *${as_nl}ac_space=\ *)
+ # `set' does not quote correctly, so add quotes: double-quote
+ # substitution turns \\\\ into \\, and sed turns \\ into \.
+ sed -n \
+ "s/'/'\\\\''/g;
+ s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1='\\2'/p"
+ ;; #(
+ *)
+ # `set' quotes correctly as required by POSIX, so do not add quotes.
+ sed -n "/^[_$as_cr_alnum]*_cv_[_$as_cr_alnum]*=/p"
+ ;;
+ esac |
+ sort
+) |
+ sed '
+ /^ac_cv_env_/b end
+ t clear
+ :clear
+ s/^\([^=]*\)=\(.*[{}].*\)$/test "${\1+set}" = set || &/
+ t end
+ s/^\([^=]*\)=\(.*\)$/\1=${\1=\2}/
+ :end' >>confcache
+if diff "$cache_file" confcache >/dev/null 2>&1; then :; else
+ if test -w "$cache_file"; then
+ test "x$cache_file" != "x/dev/null" &&
+ { $as_echo "$as_me:${as_lineno-$LINENO}: updating cache $cache_file" >&5
+$as_echo "$as_me: updating cache $cache_file" >&6;}
+ cat confcache >$cache_file
+ else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: not updating unwritable cache $cache_file" >&5
+$as_echo "$as_me: not updating unwritable cache $cache_file" >&6;}
+ fi
+fi
+rm -f confcache
+
+test "x$prefix" = xNONE && prefix=$ac_default_prefix
+# Let make expand exec_prefix.
+test "x$exec_prefix" = xNONE && exec_prefix='${prefix}'
+
+DEFS=-DHAVE_CONFIG_H
+
+ac_libobjs=
+ac_ltlibobjs=
+for ac_i in : $LIBOBJS; do test "x$ac_i" = x: && continue
+ # 1. Remove the extension, and $U if already installed.
+ ac_script='s/\$U\././;s/\.o$//;s/\.obj$//'
+ ac_i=`$as_echo "$ac_i" | sed "$ac_script"`
+ # 2. Prepend LIBOBJDIR. When used with automake>=1.10 LIBOBJDIR
+ # will be set to the directory where LIBOBJS objects are built.
+ as_fn_append ac_libobjs " \${LIBOBJDIR}$ac_i\$U.$ac_objext"
+ as_fn_append ac_ltlibobjs " \${LIBOBJDIR}$ac_i"'$U.lo'
+done
+LIBOBJS=$ac_libobjs
+
+LTLIBOBJS=$ac_ltlibobjs
+
+
+ if test -n "$EXEEXT"; then
+ am__EXEEXT_TRUE=
+ am__EXEEXT_FALSE='#'
+else
+ am__EXEEXT_TRUE='#'
+ am__EXEEXT_FALSE=
+fi
+
+if test -z "${MAINTAINER_MODE_TRUE}" && test -z "${MAINTAINER_MODE_FALSE}"; then
+ as_fn_error "conditional \"MAINTAINER_MODE\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+if test -z "${AMDEP_TRUE}" && test -z "${AMDEP_FALSE}"; then
+ as_fn_error "conditional \"AMDEP\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+if test -z "${am__fastdepCC_TRUE}" && test -z "${am__fastdepCC_FALSE}"; then
+ as_fn_error "conditional \"am__fastdepCC\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+if test -z "${HAVE_LD_VERSION_SCRIPT_TRUE}" && test -z "${HAVE_LD_VERSION_SCRIPT_FALSE}"; then
+ as_fn_error "conditional \"HAVE_LD_VERSION_SCRIPT\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+
+: ${CONFIG_STATUS=./config.status}
+ac_write_fail=0
+ac_clean_files_save=$ac_clean_files
+ac_clean_files="$ac_clean_files $CONFIG_STATUS"
+{ $as_echo "$as_me:${as_lineno-$LINENO}: creating $CONFIG_STATUS" >&5
+$as_echo "$as_me: creating $CONFIG_STATUS" >&6;}
+as_write_fail=0
+cat >$CONFIG_STATUS <<_ASEOF || as_write_fail=1
+#! $SHELL
+# Generated by $as_me.
+# Run this file to recreate the current configuration.
+# Compiler output produced by configure, useful for debugging
+# configure, is in config.log if it exists.
+
+debug=false
+ac_cs_recheck=false
+ac_cs_silent=false
+
+SHELL=\${CONFIG_SHELL-$SHELL}
+export SHELL
+_ASEOF
+cat >>$CONFIG_STATUS <<\_ASEOF || as_write_fail=1
+## -------------------- ##
+## M4sh Initialization. ##
+## -------------------- ##
+
+# Be more Bourne compatible
+DUALCASE=1; export DUALCASE # for MKS sh
+if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then :
+ emulate sh
+ NULLCMD=:
+ # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which
+ # is contrary to our usage. Disable this feature.
+ alias -g '${1+"$@"}'='"$@"'
+ setopt NO_GLOB_SUBST
+else
+ case `(set -o) 2>/dev/null` in #(
+ *posix*) :
+ set -o posix ;; #(
+ *) :
+ ;;
+esac
+fi
+
+
+as_nl='
+'
+export as_nl
+# Printing a long string crashes Solaris 7 /usr/bin/printf.
+as_echo='\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'
+as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo
+as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo$as_echo
+# Prefer a ksh shell builtin over an external printf program on Solaris,
+# but without wasting forks for bash or zsh.
+if test -z "$BASH_VERSION$ZSH_VERSION" \
+ && (test "X`print -r -- $as_echo`" = "X$as_echo") 2>/dev/null; then
+ as_echo='print -r --'
+ as_echo_n='print -rn --'
+elif (test "X`printf %s $as_echo`" = "X$as_echo") 2>/dev/null; then
+ as_echo='printf %s\n'
+ as_echo_n='printf %s'
+else
+ if test "X`(/usr/ucb/echo -n -n $as_echo) 2>/dev/null`" = "X-n $as_echo"; then
+ as_echo_body='eval /usr/ucb/echo -n "$1$as_nl"'
+ as_echo_n='/usr/ucb/echo -n'
+ else
+ as_echo_body='eval expr "X$1" : "X\\(.*\\)"'
+ as_echo_n_body='eval
+ arg=$1;
+ case $arg in #(
+ *"$as_nl"*)
+ expr "X$arg" : "X\\(.*\\)$as_nl";
+ arg=`expr "X$arg" : ".*$as_nl\\(.*\\)"`;;
+ esac;
+ expr "X$arg" : "X\\(.*\\)" | tr -d "$as_nl"
+ '
+ export as_echo_n_body
+ as_echo_n='sh -c $as_echo_n_body as_echo'
+ fi
+ export as_echo_body
+ as_echo='sh -c $as_echo_body as_echo'
+fi
+
+# The user is always right.
+if test "${PATH_SEPARATOR+set}" != set; then
+ PATH_SEPARATOR=:
+ (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 && {
+ (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 ||
+ PATH_SEPARATOR=';'
+ }
+fi
+
+
+# IFS
+# We need space, tab and new line, in precisely that order. Quoting is
+# there to prevent editors from complaining about space-tab.
+# (If _AS_PATH_WALK were called with IFS unset, it would disable word
+# splitting by setting IFS to empty value.)
+IFS=" "" $as_nl"
+
+# Find who we are. Look in the path if we contain no directory separator.
+case $0 in #((
+ *[\\/]* ) as_myself=$0 ;;
+ *) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ test -r "$as_dir/$0" && as_myself=$as_dir/$0 && break
+ done
+IFS=$as_save_IFS
+
+ ;;
+esac
+# We did not find ourselves, most probably we were run as `sh COMMAND'
+# in which case we are not to be found in the path.
+if test "x$as_myself" = x; then
+ as_myself=$0
+fi
+if test ! -f "$as_myself"; then
+ $as_echo "$as_myself: error: cannot find myself; rerun with an absolute file name" >&2
+ exit 1
+fi
+
+# Unset variables that we do not need and which cause bugs (e.g. in
+# pre-3.0 UWIN ksh). But do not cause bugs in bash 2.01; the "|| exit 1"
+# suppresses any "Segmentation fault" message there. '((' could
+# trigger a bug in pdksh 5.2.14.
+for as_var in BASH_ENV ENV MAIL MAILPATH
+do eval test x\${$as_var+set} = xset \
+ && ( (unset $as_var) || exit 1) >/dev/null 2>&1 && unset $as_var || :
+done
+PS1='$ '
+PS2='> '
+PS4='+ '
+
+# NLS nuisances.
+LC_ALL=C
+export LC_ALL
+LANGUAGE=C
+export LANGUAGE
+
+# CDPATH.
+(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
+
+
+# as_fn_error ERROR [LINENO LOG_FD]
+# ---------------------------------
+# Output "`basename $0`: error: ERROR" to stderr. If LINENO and LOG_FD are
+# provided, also output the error to LOG_FD, referencing LINENO. Then exit the
+# script with status $?, using 1 if that was 0.
+as_fn_error ()
+{
+ as_status=$?; test $as_status -eq 0 && as_status=1
+ if test "$3"; then
+ as_lineno=${as_lineno-"$2"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+ $as_echo "$as_me:${as_lineno-$LINENO}: error: $1" >&$3
+ fi
+ $as_echo "$as_me: error: $1" >&2
+ as_fn_exit $as_status
+} # as_fn_error
+
+
+# as_fn_set_status STATUS
+# -----------------------
+# Set $? to STATUS, without forking.
+as_fn_set_status ()
+{
+ return $1
+} # as_fn_set_status
+
+# as_fn_exit STATUS
+# -----------------
+# Exit the shell with STATUS, even in a "trap 0" or "set -e" context.
+as_fn_exit ()
+{
+ set +e
+ as_fn_set_status $1
+ exit $1
+} # as_fn_exit
+
+# as_fn_unset VAR
+# ---------------
+# Portably unset VAR.
+as_fn_unset ()
+{
+ { eval $1=; unset $1;}
+}
+as_unset=as_fn_unset
+# as_fn_append VAR VALUE
+# ----------------------
+# Append the text in VALUE to the end of the definition contained in VAR. Take
+# advantage of any shell optimizations that allow amortized linear growth over
+# repeated appends, instead of the typical quadratic growth present in naive
+# implementations.
+if (eval "as_var=1; as_var+=2; test x\$as_var = x12") 2>/dev/null; then :
+ eval 'as_fn_append ()
+ {
+ eval $1+=\$2
+ }'
+else
+ as_fn_append ()
+ {
+ eval $1=\$$1\$2
+ }
+fi # as_fn_append
+
+# as_fn_arith ARG...
+# ------------------
+# Perform arithmetic evaluation on the ARGs, and store the result in the
+# global $as_val. Take advantage of shells that can avoid forks. The arguments
+# must be portable across $(()) and expr.
+if (eval "test \$(( 1 + 1 )) = 2") 2>/dev/null; then :
+ eval 'as_fn_arith ()
+ {
+ as_val=$(( $* ))
+ }'
+else
+ as_fn_arith ()
+ {
+ as_val=`expr "$@" || test $? -eq 1`
+ }
+fi # as_fn_arith
+
+
+if expr a : '\(a\)' >/dev/null 2>&1 &&
+ test "X`expr 00001 : '.*\(...\)'`" = X001; then
+ as_expr=expr
+else
+ as_expr=false
+fi
+
+if (basename -- /) >/dev/null 2>&1 && test "X`basename -- / 2>&1`" = "X/"; then
+ as_basename=basename
+else
+ as_basename=false
+fi
+
+if (as_dir=`dirname -- /` && test "X$as_dir" = X/) >/dev/null 2>&1; then
+ as_dirname=dirname
+else
+ as_dirname=false
+fi
+
+as_me=`$as_basename -- "$0" ||
+$as_expr X/"$0" : '.*/\([^/][^/]*\)/*$' \| \
+ X"$0" : 'X\(//\)$' \| \
+ X"$0" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X/"$0" |
+ sed '/^.*\/\([^/][^/]*\)\/*$/{
+ s//\1/
+ q
+ }
+ /^X\/\(\/\/\)$/{
+ s//\1/
+ q
+ }
+ /^X\/\(\/\).*/{
+ s//\1/
+ q
+ }
+ s/.*/./; q'`
+
+# Avoid depending upon Character Ranges.
+as_cr_letters='abcdefghijklmnopqrstuvwxyz'
+as_cr_LETTERS='ABCDEFGHIJKLMNOPQRSTUVWXYZ'
+as_cr_Letters=$as_cr_letters$as_cr_LETTERS
+as_cr_digits='0123456789'
+as_cr_alnum=$as_cr_Letters$as_cr_digits
+
+ECHO_C= ECHO_N= ECHO_T=
+case `echo -n x` in #(((((
+-n*)
+ case `echo 'xy\c'` in
+ *c*) ECHO_T=' ';; # ECHO_T is single tab character.
+ xy) ECHO_C='\c';;
+ *) echo `echo ksh88 bug on AIX 6.1` > /dev/null
+ ECHO_T=' ';;
+ esac;;
+*)
+ ECHO_N='-n';;
+esac
+
+rm -f conf$$ conf$$.exe conf$$.file
+if test -d conf$$.dir; then
+ rm -f conf$$.dir/conf$$.file
+else
+ rm -f conf$$.dir
+ mkdir conf$$.dir 2>/dev/null
+fi
+if (echo >conf$$.file) 2>/dev/null; then
+ if ln -s conf$$.file conf$$ 2>/dev/null; then
+ as_ln_s='ln -s'
+ # ... but there are two gotchas:
+ # 1) On MSYS, both `ln -s file dir' and `ln file dir' fail.
+ # 2) DJGPP < 2.04 has no symlinks; `ln -s' creates a wrapper executable.
+ # In both cases, we have to default to `cp -p'.
+ ln -s conf$$.file conf$$.dir 2>/dev/null && test ! -f conf$$.exe ||
+ as_ln_s='cp -p'
+ elif ln conf$$.file conf$$ 2>/dev/null; then
+ as_ln_s=ln
+ else
+ as_ln_s='cp -p'
+ fi
+else
+ as_ln_s='cp -p'
+fi
+rm -f conf$$ conf$$.exe conf$$.dir/conf$$.file conf$$.file
+rmdir conf$$.dir 2>/dev/null
+
+
+# as_fn_mkdir_p
+# -------------
+# Create "$as_dir" as a directory, including parents if necessary.
+as_fn_mkdir_p ()
+{
+
+ case $as_dir in #(
+ -*) as_dir=./$as_dir;;
+ esac
+ test -d "$as_dir" || eval $as_mkdir_p || {
+ as_dirs=
+ while :; do
+ case $as_dir in #(
+ *\'*) as_qdir=`$as_echo "$as_dir" | sed "s/'/'\\\\\\\\''/g"`;; #'(
+ *) as_qdir=$as_dir;;
+ esac
+ as_dirs="'$as_qdir' $as_dirs"
+ as_dir=`$as_dirname -- "$as_dir" ||
+$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+ X"$as_dir" : 'X\(//\)[^/]' \| \
+ X"$as_dir" : 'X\(//\)$' \| \
+ X"$as_dir" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X"$as_dir" |
+ sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+ s//\1/
+ q
+ }
+ /^X\(\/\/\)[^/].*/{
+ s//\1/
+ q
+ }
+ /^X\(\/\/\)$/{
+ s//\1/
+ q
+ }
+ /^X\(\/\).*/{
+ s//\1/
+ q
+ }
+ s/.*/./; q'`
+ test -d "$as_dir" && break
+ done
+ test -z "$as_dirs" || eval "mkdir $as_dirs"
+ } || test -d "$as_dir" || as_fn_error "cannot create directory $as_dir"
+
+
+} # as_fn_mkdir_p
+if mkdir -p . 2>/dev/null; then
+ as_mkdir_p='mkdir -p "$as_dir"'
+else
+ test -d ./-p && rmdir ./-p
+ as_mkdir_p=false
+fi
+
+if test -x / >/dev/null 2>&1; then
+ as_test_x='test -x'
+else
+ if ls -dL / >/dev/null 2>&1; then
+ as_ls_L_option=L
+ else
+ as_ls_L_option=
+ fi
+ as_test_x='
+ eval sh -c '\''
+ if test -d "$1"; then
+ test -d "$1/.";
+ else
+ case $1 in #(
+ -*)set "./$1";;
+ esac;
+ case `ls -ld'$as_ls_L_option' "$1" 2>/dev/null` in #((
+ ???[sx]*):;;*)false;;esac;fi
+ '\'' sh
+ '
+fi
+as_executable_p=$as_test_x
+
+# Sed expression to map a string onto a valid CPP name.
+as_tr_cpp="eval sed 'y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g'"
+
+# Sed expression to map a string onto a valid variable name.
+as_tr_sh="eval sed 'y%*+%pp%;s%[^_$as_cr_alnum]%_%g'"
+
+
+exec 6>&1
+## ----------------------------------- ##
+## Main body of $CONFIG_STATUS script. ##
+## ----------------------------------- ##
+_ASEOF
+test $as_write_fail = 0 && chmod +x $CONFIG_STATUS || ac_write_fail=1
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+# Save the log message, to keep $0 and so on meaningful, and to
+# report actual input values of CONFIG_FILES etc. instead of their
+# values after options handling.
+ac_log="
+This file was extended by libpng $as_me 1.4.0, which was
+generated by GNU Autoconf 2.65. Invocation command line was
+
+ CONFIG_FILES = $CONFIG_FILES
+ CONFIG_HEADERS = $CONFIG_HEADERS
+ CONFIG_LINKS = $CONFIG_LINKS
+ CONFIG_COMMANDS = $CONFIG_COMMANDS
+ $ $0 $@
+
+on `(hostname || uname -n) 2>/dev/null | sed 1q`
+"
+
+_ACEOF
+
+case $ac_config_files in *"
+"*) set x $ac_config_files; shift; ac_config_files=$*;;
+esac
+
+case $ac_config_headers in *"
+"*) set x $ac_config_headers; shift; ac_config_headers=$*;;
+esac
+
+
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+# Files that config.status was made for.
+config_files="$ac_config_files"
+config_headers="$ac_config_headers"
+config_commands="$ac_config_commands"
+
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+ac_cs_usage="\
+\`$as_me' instantiates files and other configuration actions
+from templates according to the current configuration. Unless the files
+and actions are specified as TAGs, all are instantiated by default.
+
+Usage: $0 [OPTION]... [TAG]...
+
+ -h, --help print this help, then exit
+ -V, --version print version number and configuration settings, then exit
+ --config print configuration, then exit
+ -q, --quiet, --silent
+ do not print progress messages
+ -d, --debug don't remove temporary files
+ --recheck update $as_me by reconfiguring in the same conditions
+ --file=FILE[:TEMPLATE]
+ instantiate the configuration file FILE
+ --header=FILE[:TEMPLATE]
+ instantiate the configuration header FILE
+
+Configuration files:
+$config_files
+
+Configuration headers:
+$config_headers
+
+Configuration commands:
+$config_commands
+
+Report bugs to <png-mng-implement@lists.sourceforge.net>."
+
+_ACEOF
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`"
+ac_cs_version="\\
+libpng config.status 1.4.0
+configured by $0, generated by GNU Autoconf 2.65,
+ with options \\"\$ac_cs_config\\"
+
+Copyright (C) 2009 Free Software Foundation, Inc.
+This config.status script is free software; the Free Software Foundation
+gives unlimited permission to copy, distribute and modify it."
+
+ac_pwd='$ac_pwd'
+srcdir='$srcdir'
+INSTALL='$INSTALL'
+MKDIR_P='$MKDIR_P'
+AWK='$AWK'
+test -n "\$AWK" || AWK=awk
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+# The default lists apply if the user does not specify any file.
+ac_need_defaults=:
+while test $# != 0
+do
+ case $1 in
+ --*=*)
+ ac_option=`expr "X$1" : 'X\([^=]*\)='`
+ ac_optarg=`expr "X$1" : 'X[^=]*=\(.*\)'`
+ ac_shift=:
+ ;;
+ *)
+ ac_option=$1
+ ac_optarg=$2
+ ac_shift=shift
+ ;;
+ esac
+
+ case $ac_option in
+ # Handling of the options.
+ -recheck | --recheck | --rechec | --reche | --rech | --rec | --re | --r)
+ ac_cs_recheck=: ;;
+ --version | --versio | --versi | --vers | --ver | --ve | --v | -V )
+ $as_echo "$ac_cs_version"; exit ;;
+ --config | --confi | --conf | --con | --co | --c )
+ $as_echo "$ac_cs_config"; exit ;;
+ --debug | --debu | --deb | --de | --d | -d )
+ debug=: ;;
+ --file | --fil | --fi | --f )
+ $ac_shift
+ case $ac_optarg in
+ *\'*) ac_optarg=`$as_echo "$ac_optarg" | sed "s/'/'\\\\\\\\''/g"` ;;
+ esac
+ as_fn_append CONFIG_FILES " '$ac_optarg'"
+ ac_need_defaults=false;;
+ --header | --heade | --head | --hea )
+ $ac_shift
+ case $ac_optarg in
+ *\'*) ac_optarg=`$as_echo "$ac_optarg" | sed "s/'/'\\\\\\\\''/g"` ;;
+ esac
+ as_fn_append CONFIG_HEADERS " '$ac_optarg'"
+ ac_need_defaults=false;;
+ --he | --h)
+ # Conflict between --help and --header
+ as_fn_error "ambiguous option: \`$1'
+Try \`$0 --help' for more information.";;
+ --help | --hel | -h )
+ $as_echo "$ac_cs_usage"; exit ;;
+ -q | -quiet | --quiet | --quie | --qui | --qu | --q \
+ | -silent | --silent | --silen | --sile | --sil | --si | --s)
+ ac_cs_silent=: ;;
+
+ # This is an error.
+ -*) as_fn_error "unrecognized option: \`$1'
+Try \`$0 --help' for more information." ;;
+
+ *) as_fn_append ac_config_targets " $1"
+ ac_need_defaults=false ;;
+
+ esac
+ shift
+done
+
+ac_configure_extra_args=
+
+if $ac_cs_silent; then
+ exec 6>/dev/null
+ ac_configure_extra_args="$ac_configure_extra_args --silent"
+fi
+
+_ACEOF
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+if \$ac_cs_recheck; then
+ set X '$SHELL' '$0' $ac_configure_args \$ac_configure_extra_args --no-create --no-recursion
+ shift
+ \$as_echo "running CONFIG_SHELL=$SHELL \$*" >&6
+ CONFIG_SHELL='$SHELL'
+ export CONFIG_SHELL
+ exec "\$@"
+fi
+
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+exec 5>>config.log
+{
+ echo
+ sed 'h;s/./-/g;s/^.../## /;s/...$/ ##/;p;x;p;x' <<_ASBOX
+## Running $as_me. ##
+_ASBOX
+ $as_echo "$ac_log"
+} >&5
+
+_ACEOF
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+#
+# INIT-COMMANDS
+#
+AMDEP_TRUE="$AMDEP_TRUE" ac_aux_dir="$ac_aux_dir"
+
+
+# The HP-UX ksh and POSIX shell print the target directory to stdout
+# if CDPATH is set.
+(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
+
+sed_quote_subst='$sed_quote_subst'
+double_quote_subst='$double_quote_subst'
+delay_variable_subst='$delay_variable_subst'
+SED='`$ECHO "X$SED" | $Xsed -e "$delay_single_quote_subst"`'
+Xsed='`$ECHO "X$Xsed" | $Xsed -e "$delay_single_quote_subst"`'
+GREP='`$ECHO "X$GREP" | $Xsed -e "$delay_single_quote_subst"`'
+EGREP='`$ECHO "X$EGREP" | $Xsed -e "$delay_single_quote_subst"`'
+FGREP='`$ECHO "X$FGREP" | $Xsed -e "$delay_single_quote_subst"`'
+LD='`$ECHO "X$LD" | $Xsed -e "$delay_single_quote_subst"`'
+AS='`$ECHO "X$AS" | $Xsed -e "$delay_single_quote_subst"`'
+DLLTOOL='`$ECHO "X$DLLTOOL" | $Xsed -e "$delay_single_quote_subst"`'
+OBJDUMP='`$ECHO "X$OBJDUMP" | $Xsed -e "$delay_single_quote_subst"`'
+macro_version='`$ECHO "X$macro_version" | $Xsed -e "$delay_single_quote_subst"`'
+macro_revision='`$ECHO "X$macro_revision" | $Xsed -e "$delay_single_quote_subst"`'
+enable_shared='`$ECHO "X$enable_shared" | $Xsed -e "$delay_single_quote_subst"`'
+enable_static='`$ECHO "X$enable_static" | $Xsed -e "$delay_single_quote_subst"`'
+pic_mode='`$ECHO "X$pic_mode" | $Xsed -e "$delay_single_quote_subst"`'
+enable_fast_install='`$ECHO "X$enable_fast_install" | $Xsed -e "$delay_single_quote_subst"`'
+host_alias='`$ECHO "X$host_alias" | $Xsed -e "$delay_single_quote_subst"`'
+host='`$ECHO "X$host" | $Xsed -e "$delay_single_quote_subst"`'
+host_os='`$ECHO "X$host_os" | $Xsed -e "$delay_single_quote_subst"`'
+build_alias='`$ECHO "X$build_alias" | $Xsed -e "$delay_single_quote_subst"`'
+build='`$ECHO "X$build" | $Xsed -e "$delay_single_quote_subst"`'
+build_os='`$ECHO "X$build_os" | $Xsed -e "$delay_single_quote_subst"`'
+NM='`$ECHO "X$NM" | $Xsed -e "$delay_single_quote_subst"`'
+LN_S='`$ECHO "X$LN_S" | $Xsed -e "$delay_single_quote_subst"`'
+max_cmd_len='`$ECHO "X$max_cmd_len" | $Xsed -e "$delay_single_quote_subst"`'
+ac_objext='`$ECHO "X$ac_objext" | $Xsed -e "$delay_single_quote_subst"`'
+exeext='`$ECHO "X$exeext" | $Xsed -e "$delay_single_quote_subst"`'
+lt_unset='`$ECHO "X$lt_unset" | $Xsed -e "$delay_single_quote_subst"`'
+lt_SP2NL='`$ECHO "X$lt_SP2NL" | $Xsed -e "$delay_single_quote_subst"`'
+lt_NL2SP='`$ECHO "X$lt_NL2SP" | $Xsed -e "$delay_single_quote_subst"`'
+reload_flag='`$ECHO "X$reload_flag" | $Xsed -e "$delay_single_quote_subst"`'
+reload_cmds='`$ECHO "X$reload_cmds" | $Xsed -e "$delay_single_quote_subst"`'
+deplibs_check_method='`$ECHO "X$deplibs_check_method" | $Xsed -e "$delay_single_quote_subst"`'
+file_magic_cmd='`$ECHO "X$file_magic_cmd" | $Xsed -e "$delay_single_quote_subst"`'
+AR='`$ECHO "X$AR" | $Xsed -e "$delay_single_quote_subst"`'
+AR_FLAGS='`$ECHO "X$AR_FLAGS" | $Xsed -e "$delay_single_quote_subst"`'
+STRIP='`$ECHO "X$STRIP" | $Xsed -e "$delay_single_quote_subst"`'
+RANLIB='`$ECHO "X$RANLIB" | $Xsed -e "$delay_single_quote_subst"`'
+old_postinstall_cmds='`$ECHO "X$old_postinstall_cmds" | $Xsed -e "$delay_single_quote_subst"`'
+old_postuninstall_cmds='`$ECHO "X$old_postuninstall_cmds" | $Xsed -e "$delay_single_quote_subst"`'
+old_archive_cmds='`$ECHO "X$old_archive_cmds" | $Xsed -e "$delay_single_quote_subst"`'
+CC='`$ECHO "X$CC" | $Xsed -e "$delay_single_quote_subst"`'
+CFLAGS='`$ECHO "X$CFLAGS" | $Xsed -e "$delay_single_quote_subst"`'
+compiler='`$ECHO "X$compiler" | $Xsed -e "$delay_single_quote_subst"`'
+GCC='`$ECHO "X$GCC" | $Xsed -e "$delay_single_quote_subst"`'
+lt_cv_sys_global_symbol_pipe='`$ECHO "X$lt_cv_sys_global_symbol_pipe" | $Xsed -e "$delay_single_quote_subst"`'
+lt_cv_sys_global_symbol_to_cdecl='`$ECHO "X$lt_cv_sys_global_symbol_to_cdecl" | $Xsed -e "$delay_single_quote_subst"`'
+lt_cv_sys_global_symbol_to_c_name_address='`$ECHO "X$lt_cv_sys_global_symbol_to_c_name_address" | $Xsed -e "$delay_single_quote_subst"`'
+lt_cv_sys_global_symbol_to_c_name_address_lib_prefix='`$ECHO "X$lt_cv_sys_global_symbol_to_c_name_address_lib_prefix" | $Xsed -e "$delay_single_quote_subst"`'
+objdir='`$ECHO "X$objdir" | $Xsed -e "$delay_single_quote_subst"`'
+SHELL='`$ECHO "X$SHELL" | $Xsed -e "$delay_single_quote_subst"`'
+ECHO='`$ECHO "X$ECHO" | $Xsed -e "$delay_single_quote_subst"`'
+MAGIC_CMD='`$ECHO "X$MAGIC_CMD" | $Xsed -e "$delay_single_quote_subst"`'
+lt_prog_compiler_no_builtin_flag='`$ECHO "X$lt_prog_compiler_no_builtin_flag" | $Xsed -e "$delay_single_quote_subst"`'
+lt_prog_compiler_wl='`$ECHO "X$lt_prog_compiler_wl" | $Xsed -e "$delay_single_quote_subst"`'
+lt_prog_compiler_pic='`$ECHO "X$lt_prog_compiler_pic" | $Xsed -e "$delay_single_quote_subst"`'
+lt_prog_compiler_static='`$ECHO "X$lt_prog_compiler_static" | $Xsed -e "$delay_single_quote_subst"`'
+lt_cv_prog_compiler_c_o='`$ECHO "X$lt_cv_prog_compiler_c_o" | $Xsed -e "$delay_single_quote_subst"`'
+need_locks='`$ECHO "X$need_locks" | $Xsed -e "$delay_single_quote_subst"`'
+DSYMUTIL='`$ECHO "X$DSYMUTIL" | $Xsed -e "$delay_single_quote_subst"`'
+NMEDIT='`$ECHO "X$NMEDIT" | $Xsed -e "$delay_single_quote_subst"`'
+LIPO='`$ECHO "X$LIPO" | $Xsed -e "$delay_single_quote_subst"`'
+OTOOL='`$ECHO "X$OTOOL" | $Xsed -e "$delay_single_quote_subst"`'
+OTOOL64='`$ECHO "X$OTOOL64" | $Xsed -e "$delay_single_quote_subst"`'
+libext='`$ECHO "X$libext" | $Xsed -e "$delay_single_quote_subst"`'
+shrext_cmds='`$ECHO "X$shrext_cmds" | $Xsed -e "$delay_single_quote_subst"`'
+extract_expsyms_cmds='`$ECHO "X$extract_expsyms_cmds" | $Xsed -e "$delay_single_quote_subst"`'
+archive_cmds_need_lc='`$ECHO "X$archive_cmds_need_lc" | $Xsed -e "$delay_single_quote_subst"`'
+enable_shared_with_static_runtimes='`$ECHO "X$enable_shared_with_static_runtimes" | $Xsed -e "$delay_single_quote_subst"`'
+export_dynamic_flag_spec='`$ECHO "X$export_dynamic_flag_spec" | $Xsed -e "$delay_single_quote_subst"`'
+whole_archive_flag_spec='`$ECHO "X$whole_archive_flag_spec" | $Xsed -e "$delay_single_quote_subst"`'
+compiler_needs_object='`$ECHO "X$compiler_needs_object" | $Xsed -e "$delay_single_quote_subst"`'
+old_archive_from_new_cmds='`$ECHO "X$old_archive_from_new_cmds" | $Xsed -e "$delay_single_quote_subst"`'
+old_archive_from_expsyms_cmds='`$ECHO "X$old_archive_from_expsyms_cmds" | $Xsed -e "$delay_single_quote_subst"`'
+archive_cmds='`$ECHO "X$archive_cmds" | $Xsed -e "$delay_single_quote_subst"`'
+archive_expsym_cmds='`$ECHO "X$archive_expsym_cmds" | $Xsed -e "$delay_single_quote_subst"`'
+module_cmds='`$ECHO "X$module_cmds" | $Xsed -e "$delay_single_quote_subst"`'
+module_expsym_cmds='`$ECHO "X$module_expsym_cmds" | $Xsed -e "$delay_single_quote_subst"`'
+with_gnu_ld='`$ECHO "X$with_gnu_ld" | $Xsed -e "$delay_single_quote_subst"`'
+allow_undefined_flag='`$ECHO "X$allow_undefined_flag" | $Xsed -e "$delay_single_quote_subst"`'
+no_undefined_flag='`$ECHO "X$no_undefined_flag" | $Xsed -e "$delay_single_quote_subst"`'
+hardcode_libdir_flag_spec='`$ECHO "X$hardcode_libdir_flag_spec" | $Xsed -e "$delay_single_quote_subst"`'
+hardcode_libdir_flag_spec_ld='`$ECHO "X$hardcode_libdir_flag_spec_ld" | $Xsed -e "$delay_single_quote_subst"`'
+hardcode_libdir_separator='`$ECHO "X$hardcode_libdir_separator" | $Xsed -e "$delay_single_quote_subst"`'
+hardcode_direct='`$ECHO "X$hardcode_direct" | $Xsed -e "$delay_single_quote_subst"`'
+hardcode_direct_absolute='`$ECHO "X$hardcode_direct_absolute" | $Xsed -e "$delay_single_quote_subst"`'
+hardcode_minus_L='`$ECHO "X$hardcode_minus_L" | $Xsed -e "$delay_single_quote_subst"`'
+hardcode_shlibpath_var='`$ECHO "X$hardcode_shlibpath_var" | $Xsed -e "$delay_single_quote_subst"`'
+hardcode_automatic='`$ECHO "X$hardcode_automatic" | $Xsed -e "$delay_single_quote_subst"`'
+inherit_rpath='`$ECHO "X$inherit_rpath" | $Xsed -e "$delay_single_quote_subst"`'
+link_all_deplibs='`$ECHO "X$link_all_deplibs" | $Xsed -e "$delay_single_quote_subst"`'
+fix_srcfile_path='`$ECHO "X$fix_srcfile_path" | $Xsed -e "$delay_single_quote_subst"`'
+always_export_symbols='`$ECHO "X$always_export_symbols" | $Xsed -e "$delay_single_quote_subst"`'
+export_symbols_cmds='`$ECHO "X$export_symbols_cmds" | $Xsed -e "$delay_single_quote_subst"`'
+exclude_expsyms='`$ECHO "X$exclude_expsyms" | $Xsed -e "$delay_single_quote_subst"`'
+include_expsyms='`$ECHO "X$include_expsyms" | $Xsed -e "$delay_single_quote_subst"`'
+prelink_cmds='`$ECHO "X$prelink_cmds" | $Xsed -e "$delay_single_quote_subst"`'
+file_list_spec='`$ECHO "X$file_list_spec" | $Xsed -e "$delay_single_quote_subst"`'
+variables_saved_for_relink='`$ECHO "X$variables_saved_for_relink" | $Xsed -e "$delay_single_quote_subst"`'
+need_lib_prefix='`$ECHO "X$need_lib_prefix" | $Xsed -e "$delay_single_quote_subst"`'
+need_version='`$ECHO "X$need_version" | $Xsed -e "$delay_single_quote_subst"`'
+version_type='`$ECHO "X$version_type" | $Xsed -e "$delay_single_quote_subst"`'
+runpath_var='`$ECHO "X$runpath_var" | $Xsed -e "$delay_single_quote_subst"`'
+shlibpath_var='`$ECHO "X$shlibpath_var" | $Xsed -e "$delay_single_quote_subst"`'
+shlibpath_overrides_runpath='`$ECHO "X$shlibpath_overrides_runpath" | $Xsed -e "$delay_single_quote_subst"`'
+libname_spec='`$ECHO "X$libname_spec" | $Xsed -e "$delay_single_quote_subst"`'
+library_names_spec='`$ECHO "X$library_names_spec" | $Xsed -e "$delay_single_quote_subst"`'
+soname_spec='`$ECHO "X$soname_spec" | $Xsed -e "$delay_single_quote_subst"`'
+postinstall_cmds='`$ECHO "X$postinstall_cmds" | $Xsed -e "$delay_single_quote_subst"`'
+postuninstall_cmds='`$ECHO "X$postuninstall_cmds" | $Xsed -e "$delay_single_quote_subst"`'
+finish_cmds='`$ECHO "X$finish_cmds" | $Xsed -e "$delay_single_quote_subst"`'
+finish_eval='`$ECHO "X$finish_eval" | $Xsed -e "$delay_single_quote_subst"`'
+hardcode_into_libs='`$ECHO "X$hardcode_into_libs" | $Xsed -e "$delay_single_quote_subst"`'
+sys_lib_search_path_spec='`$ECHO "X$sys_lib_search_path_spec" | $Xsed -e "$delay_single_quote_subst"`'
+sys_lib_dlsearch_path_spec='`$ECHO "X$sys_lib_dlsearch_path_spec" | $Xsed -e "$delay_single_quote_subst"`'
+hardcode_action='`$ECHO "X$hardcode_action" | $Xsed -e "$delay_single_quote_subst"`'
+enable_dlopen='`$ECHO "X$enable_dlopen" | $Xsed -e "$delay_single_quote_subst"`'
+enable_dlopen_self='`$ECHO "X$enable_dlopen_self" | $Xsed -e "$delay_single_quote_subst"`'
+enable_dlopen_self_static='`$ECHO "X$enable_dlopen_self_static" | $Xsed -e "$delay_single_quote_subst"`'
+old_striplib='`$ECHO "X$old_striplib" | $Xsed -e "$delay_single_quote_subst"`'
+striplib='`$ECHO "X$striplib" | $Xsed -e "$delay_single_quote_subst"`'
+
+LTCC='$LTCC'
+LTCFLAGS='$LTCFLAGS'
+compiler='$compiler_DEFAULT'
+
+# Quote evaled strings.
+for var in SED \
+GREP \
+EGREP \
+FGREP \
+LD \
+NM \
+LN_S \
+lt_SP2NL \
+lt_NL2SP \
+reload_flag \
+deplibs_check_method \
+file_magic_cmd \
+AR \
+AR_FLAGS \
+STRIP \
+RANLIB \
+CC \
+CFLAGS \
+compiler \
+lt_cv_sys_global_symbol_pipe \
+lt_cv_sys_global_symbol_to_cdecl \
+lt_cv_sys_global_symbol_to_c_name_address \
+lt_cv_sys_global_symbol_to_c_name_address_lib_prefix \
+SHELL \
+ECHO \
+lt_prog_compiler_no_builtin_flag \
+lt_prog_compiler_wl \
+lt_prog_compiler_pic \
+lt_prog_compiler_static \
+lt_cv_prog_compiler_c_o \
+need_locks \
+DSYMUTIL \
+NMEDIT \
+LIPO \
+OTOOL \
+OTOOL64 \
+shrext_cmds \
+export_dynamic_flag_spec \
+whole_archive_flag_spec \
+compiler_needs_object \
+with_gnu_ld \
+allow_undefined_flag \
+no_undefined_flag \
+hardcode_libdir_flag_spec \
+hardcode_libdir_flag_spec_ld \
+hardcode_libdir_separator \
+fix_srcfile_path \
+exclude_expsyms \
+include_expsyms \
+file_list_spec \
+variables_saved_for_relink \
+libname_spec \
+library_names_spec \
+soname_spec \
+finish_eval \
+old_striplib \
+striplib; do
+ case \`eval \\\\\$ECHO "X\\\\\$\$var"\` in
+ *[\\\\\\\`\\"\\\$]*)
+ eval "lt_\$var=\\\\\\"\\\`\\\$ECHO \\"X\\\$\$var\\" | \\\$Xsed -e \\"\\\$sed_quote_subst\\"\\\`\\\\\\""
+ ;;
+ *)
+ eval "lt_\$var=\\\\\\"\\\$\$var\\\\\\""
+ ;;
+ esac
+done
+
+# Double-quote double-evaled strings.
+for var in reload_cmds \
+old_postinstall_cmds \
+old_postuninstall_cmds \
+old_archive_cmds \
+extract_expsyms_cmds \
+old_archive_from_new_cmds \
+old_archive_from_expsyms_cmds \
+archive_cmds \
+archive_expsym_cmds \
+module_cmds \
+module_expsym_cmds \
+export_symbols_cmds \
+prelink_cmds \
+postinstall_cmds \
+postuninstall_cmds \
+finish_cmds \
+sys_lib_search_path_spec \
+sys_lib_dlsearch_path_spec; do
+ case \`eval \\\\\$ECHO "X\\\\\$\$var"\` in
+ *[\\\\\\\`\\"\\\$]*)
+ eval "lt_\$var=\\\\\\"\\\`\\\$ECHO \\"X\\\$\$var\\" | \\\$Xsed -e \\"\\\$double_quote_subst\\" -e \\"\\\$sed_quote_subst\\" -e \\"\\\$delay_variable_subst\\"\\\`\\\\\\""
+ ;;
+ *)
+ eval "lt_\$var=\\\\\\"\\\$\$var\\\\\\""
+ ;;
+ esac
+done
+
+# Fix-up fallback echo if it was mangled by the above quoting rules.
+case \$lt_ECHO in
+*'\\\$0 --fallback-echo"') lt_ECHO=\`\$ECHO "X\$lt_ECHO" | \$Xsed -e 's/\\\\\\\\\\\\\\\$0 --fallback-echo"\$/\$0 --fallback-echo"/'\`
+ ;;
+esac
+
+ac_aux_dir='$ac_aux_dir'
+xsi_shell='$xsi_shell'
+lt_shell_append='$lt_shell_append'
+
+# See if we are running on zsh, and set the options which allow our
+# commands through without removal of \ escapes INIT.
+if test -n "\${ZSH_VERSION+set}" ; then
+ setopt NO_GLOB_SUBST
+fi
+
+
+ PACKAGE='$PACKAGE'
+ VERSION='$VERSION'
+ TIMESTAMP='$TIMESTAMP'
+ RM='$RM'
+ ofile='$ofile'
+
+
+
+
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+
+# Handling of arguments.
+for ac_config_target in $ac_config_targets
+do
+ case $ac_config_target in
+ "config.h") CONFIG_HEADERS="$CONFIG_HEADERS config.h" ;;
+ "depfiles") CONFIG_COMMANDS="$CONFIG_COMMANDS depfiles" ;;
+ "libtool") CONFIG_COMMANDS="$CONFIG_COMMANDS libtool" ;;
+ "Makefile") CONFIG_FILES="$CONFIG_FILES Makefile" ;;
+ "libpng.pc") CONFIG_FILES="$CONFIG_FILES libpng.pc:libpng.pc.in" ;;
+ "libpng-config") CONFIG_FILES="$CONFIG_FILES libpng-config:libpng-config.in" ;;
+
+ *) as_fn_error "invalid argument: \`$ac_config_target'" "$LINENO" 5;;
+ esac
+done
+
+
+# If the user did not use the arguments to specify the items to instantiate,
+# then the envvar interface is used. Set only those that are not.
+# We use the long form for the default assignment because of an extremely
+# bizarre bug on SunOS 4.1.3.
+if $ac_need_defaults; then
+ test "${CONFIG_FILES+set}" = set || CONFIG_FILES=$config_files
+ test "${CONFIG_HEADERS+set}" = set || CONFIG_HEADERS=$config_headers
+ test "${CONFIG_COMMANDS+set}" = set || CONFIG_COMMANDS=$config_commands
+fi
+
+# Have a temporary directory for convenience. Make it in the build tree
+# simply because there is no reason against having it here, and in addition,
+# creating and moving files from /tmp can sometimes cause problems.
+# Hook for its removal unless debugging.
+# Note that there is a small window in which the directory will not be cleaned:
+# after its creation but before its name has been assigned to `$tmp'.
+$debug ||
+{
+ tmp=
+ trap 'exit_status=$?
+ { test -z "$tmp" || test ! -d "$tmp" || rm -fr "$tmp"; } && exit $exit_status
+' 0
+ trap 'as_fn_exit 1' 1 2 13 15
+}
+# Create a (secure) tmp directory for tmp files.
+
+{
+ tmp=`(umask 077 && mktemp -d "./confXXXXXX") 2>/dev/null` &&
+ test -n "$tmp" && test -d "$tmp"
+} ||
+{
+ tmp=./conf$$-$RANDOM
+ (umask 077 && mkdir "$tmp")
+} || as_fn_error "cannot create a temporary directory in ." "$LINENO" 5
+
+# Set up the scripts for CONFIG_FILES section.
+# No need to generate them if there are no CONFIG_FILES.
+# This happens for instance with `./config.status config.h'.
+if test -n "$CONFIG_FILES"; then
+
+
+ac_cr=`echo X | tr X '\015'`
+# On cygwin, bash can eat \r inside `` if the user requested igncr.
+# But we know of no other shell where ac_cr would be empty at this
+# point, so we can use a bashism as a fallback.
+if test "x$ac_cr" = x; then
+ eval ac_cr=\$\'\\r\'
+fi
+ac_cs_awk_cr=`$AWK 'BEGIN { print "a\rb" }' </dev/null 2>/dev/null`
+if test "$ac_cs_awk_cr" = "a${ac_cr}b"; then
+ ac_cs_awk_cr='\r'
+else
+ ac_cs_awk_cr=$ac_cr
+fi
+
+echo 'BEGIN {' >"$tmp/subs1.awk" &&
+_ACEOF
+
+
+{
+ echo "cat >conf$$subs.awk <<_ACEOF" &&
+ echo "$ac_subst_vars" | sed 's/.*/&!$&$ac_delim/' &&
+ echo "_ACEOF"
+} >conf$$subs.sh ||
+ as_fn_error "could not make $CONFIG_STATUS" "$LINENO" 5
+ac_delim_num=`echo "$ac_subst_vars" | grep -c '$'`
+ac_delim='%!_!# '
+for ac_last_try in false false false false false :; do
+ . ./conf$$subs.sh ||
+ as_fn_error "could not make $CONFIG_STATUS" "$LINENO" 5
+
+ ac_delim_n=`sed -n "s/.*$ac_delim\$/X/p" conf$$subs.awk | grep -c X`
+ if test $ac_delim_n = $ac_delim_num; then
+ break
+ elif $ac_last_try; then
+ as_fn_error "could not make $CONFIG_STATUS" "$LINENO" 5
+ else
+ ac_delim="$ac_delim!$ac_delim _$ac_delim!! "
+ fi
+done
+rm -f conf$$subs.sh
+
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+cat >>"\$tmp/subs1.awk" <<\\_ACAWK &&
+_ACEOF
+sed -n '
+h
+s/^/S["/; s/!.*/"]=/
+p
+g
+s/^[^!]*!//
+:repl
+t repl
+s/'"$ac_delim"'$//
+t delim
+:nl
+h
+s/\(.\{148\}\)..*/\1/
+t more1
+s/["\\]/\\&/g; s/^/"/; s/$/\\n"\\/
+p
+n
+b repl
+:more1
+s/["\\]/\\&/g; s/^/"/; s/$/"\\/
+p
+g
+s/.\{148\}//
+t nl
+:delim
+h
+s/\(.\{148\}\)..*/\1/
+t more2
+s/["\\]/\\&/g; s/^/"/; s/$/"/
+p
+b
+:more2
+s/["\\]/\\&/g; s/^/"/; s/$/"\\/
+p
+g
+s/.\{148\}//
+t delim
+' <conf$$subs.awk | sed '
+/^[^""]/{
+ N
+ s/\n//
+}
+' >>$CONFIG_STATUS || ac_write_fail=1
+rm -f conf$$subs.awk
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+_ACAWK
+cat >>"\$tmp/subs1.awk" <<_ACAWK &&
+ for (key in S) S_is_set[key] = 1
+ FS = ""
+
+}
+{
+ line = $ 0
+ nfields = split(line, field, "@")
+ substed = 0
+ len = length(field[1])
+ for (i = 2; i < nfields; i++) {
+ key = field[i]
+ keylen = length(key)
+ if (S_is_set[key]) {
+ value = S[key]
+ line = substr(line, 1, len) "" value "" substr(line, len + keylen + 3)
+ len += length(value) + length(field[++i])
+ substed = 1
+ } else
+ len += 1 + keylen
+ }
+
+ print line
+}
+
+_ACAWK
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+if sed "s/$ac_cr//" < /dev/null > /dev/null 2>&1; then
+ sed "s/$ac_cr\$//; s/$ac_cr/$ac_cs_awk_cr/g"
+else
+ cat
+fi < "$tmp/subs1.awk" > "$tmp/subs.awk" \
+ || as_fn_error "could not setup config files machinery" "$LINENO" 5
+_ACEOF
+
+# VPATH may cause trouble with some makes, so we remove $(srcdir),
+# ${srcdir} and @srcdir@ from VPATH if srcdir is ".", strip leading and
+# trailing colons and then remove the whole line if VPATH becomes empty
+# (actually we leave an empty line to preserve line numbers).
+if test "x$srcdir" = x.; then
+ ac_vpsub='/^[ ]*VPATH[ ]*=/{
+s/:*\$(srcdir):*/:/
+s/:*\${srcdir}:*/:/
+s/:*@srcdir@:*/:/
+s/^\([^=]*=[ ]*\):*/\1/
+s/:*$//
+s/^[^=]*=[ ]*$//
+}'
+fi
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+fi # test -n "$CONFIG_FILES"
+
+# Set up the scripts for CONFIG_HEADERS section.
+# No need to generate them if there are no CONFIG_HEADERS.
+# This happens for instance with `./config.status Makefile'.
+if test -n "$CONFIG_HEADERS"; then
+cat >"$tmp/defines.awk" <<\_ACAWK ||
+BEGIN {
+_ACEOF
+
+# Transform confdefs.h into an awk script `defines.awk', embedded as
+# here-document in config.status, that substitutes the proper values into
+# config.h.in to produce config.h.
+
+# Create a delimiter string that does not exist in confdefs.h, to ease
+# handling of long lines.
+ac_delim='%!_!# '
+for ac_last_try in false false :; do
+ ac_t=`sed -n "/$ac_delim/p" confdefs.h`
+ if test -z "$ac_t"; then
+ break
+ elif $ac_last_try; then
+ as_fn_error "could not make $CONFIG_HEADERS" "$LINENO" 5
+ else
+ ac_delim="$ac_delim!$ac_delim _$ac_delim!! "
+ fi
+done
+
+# For the awk script, D is an array of macro values keyed by name,
+# likewise P contains macro parameters if any. Preserve backslash
+# newline sequences.
+
+ac_word_re=[_$as_cr_Letters][_$as_cr_alnum]*
+sed -n '
+s/.\{148\}/&'"$ac_delim"'/g
+t rset
+:rset
+s/^[ ]*#[ ]*define[ ][ ]*/ /
+t def
+d
+:def
+s/\\$//
+t bsnl
+s/["\\]/\\&/g
+s/^ \('"$ac_word_re"'\)\(([^()]*)\)[ ]*\(.*\)/P["\1"]="\2"\
+D["\1"]=" \3"/p
+s/^ \('"$ac_word_re"'\)[ ]*\(.*\)/D["\1"]=" \2"/p
+d
+:bsnl
+s/["\\]/\\&/g
+s/^ \('"$ac_word_re"'\)\(([^()]*)\)[ ]*\(.*\)/P["\1"]="\2"\
+D["\1"]=" \3\\\\\\n"\\/p
+t cont
+s/^ \('"$ac_word_re"'\)[ ]*\(.*\)/D["\1"]=" \2\\\\\\n"\\/p
+t cont
+d
+:cont
+n
+s/.\{148\}/&'"$ac_delim"'/g
+t clear
+:clear
+s/\\$//
+t bsnlc
+s/["\\]/\\&/g; s/^/"/; s/$/"/p
+d
+:bsnlc
+s/["\\]/\\&/g; s/^/"/; s/$/\\\\\\n"\\/p
+b cont
+' <confdefs.h | sed '
+s/'"$ac_delim"'/"\\\
+"/g' >>$CONFIG_STATUS || ac_write_fail=1
+
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+ for (key in D) D_is_set[key] = 1
+ FS = ""
+}
+/^[\t ]*#[\t ]*(define|undef)[\t ]+$ac_word_re([\t (]|\$)/ {
+ line = \$ 0
+ split(line, arg, " ")
+ if (arg[1] == "#") {
+ defundef = arg[2]
+ mac1 = arg[3]
+ } else {
+ defundef = substr(arg[1], 2)
+ mac1 = arg[2]
+ }
+ split(mac1, mac2, "(") #)
+ macro = mac2[1]
+ prefix = substr(line, 1, index(line, defundef) - 1)
+ if (D_is_set[macro]) {
+ # Preserve the white space surrounding the "#".
+ print prefix "define", macro P[macro] D[macro]
+ next
+ } else {
+ # Replace #undef with comments. This is necessary, for example,
+ # in the case of _POSIX_SOURCE, which is predefined and required
+ # on some systems where configure will not decide to define it.
+ if (defundef == "undef") {
+ print "/*", prefix defundef, macro, "*/"
+ next
+ }
+ }
+}
+{ print }
+_ACAWK
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+ as_fn_error "could not setup config headers machinery" "$LINENO" 5
+fi # test -n "$CONFIG_HEADERS"
+
+
+eval set X " :F $CONFIG_FILES :H $CONFIG_HEADERS :C $CONFIG_COMMANDS"
+shift
+for ac_tag
+do
+ case $ac_tag in
+ :[FHLC]) ac_mode=$ac_tag; continue;;
+ esac
+ case $ac_mode$ac_tag in
+ :[FHL]*:*);;
+ :L* | :C*:*) as_fn_error "invalid tag \`$ac_tag'" "$LINENO" 5;;
+ :[FH]-) ac_tag=-:-;;
+ :[FH]*) ac_tag=$ac_tag:$ac_tag.in;;
+ esac
+ ac_save_IFS=$IFS
+ IFS=:
+ set x $ac_tag
+ IFS=$ac_save_IFS
+ shift
+ ac_file=$1
+ shift
+
+ case $ac_mode in
+ :L) ac_source=$1;;
+ :[FH])
+ ac_file_inputs=
+ for ac_f
+ do
+ case $ac_f in
+ -) ac_f="$tmp/stdin";;
+ *) # Look for the file first in the build tree, then in the source tree
+ # (if the path is not absolute). The absolute path cannot be DOS-style,
+ # because $ac_f cannot contain `:'.
+ test -f "$ac_f" ||
+ case $ac_f in
+ [\\/$]*) false;;
+ *) test -f "$srcdir/$ac_f" && ac_f="$srcdir/$ac_f";;
+ esac ||
+ as_fn_error "cannot find input file: \`$ac_f'" "$LINENO" 5;;
+ esac
+ case $ac_f in *\'*) ac_f=`$as_echo "$ac_f" | sed "s/'/'\\\\\\\\''/g"`;; esac
+ as_fn_append ac_file_inputs " '$ac_f'"
+ done
+
+ # Let's still pretend it is `configure' which instantiates (i.e., don't
+ # use $as_me), people would be surprised to read:
+ # /* config.h. Generated by config.status. */
+ configure_input='Generated from '`
+ $as_echo "$*" | sed 's|^[^:]*/||;s|:[^:]*/|, |g'
+ `' by configure.'
+ if test x"$ac_file" != x-; then
+ configure_input="$ac_file. $configure_input"
+ { $as_echo "$as_me:${as_lineno-$LINENO}: creating $ac_file" >&5
+$as_echo "$as_me: creating $ac_file" >&6;}
+ fi
+ # Neutralize special characters interpreted by sed in replacement strings.
+ case $configure_input in #(
+ *\&* | *\|* | *\\* )
+ ac_sed_conf_input=`$as_echo "$configure_input" |
+ sed 's/[\\\\&|]/\\\\&/g'`;; #(
+ *) ac_sed_conf_input=$configure_input;;
+ esac
+
+ case $ac_tag in
+ *:-:* | *:-) cat >"$tmp/stdin" \
+ || as_fn_error "could not create $ac_file" "$LINENO" 5 ;;
+ esac
+ ;;
+ esac
+
+ ac_dir=`$as_dirname -- "$ac_file" ||
+$as_expr X"$ac_file" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+ X"$ac_file" : 'X\(//\)[^/]' \| \
+ X"$ac_file" : 'X\(//\)$' \| \
+ X"$ac_file" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X"$ac_file" |
+ sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+ s//\1/
+ q
+ }
+ /^X\(\/\/\)[^/].*/{
+ s//\1/
+ q
+ }
+ /^X\(\/\/\)$/{
+ s//\1/
+ q
+ }
+ /^X\(\/\).*/{
+ s//\1/
+ q
+ }
+ s/.*/./; q'`
+ as_dir="$ac_dir"; as_fn_mkdir_p
+ ac_builddir=.
+
+case "$ac_dir" in
+.) ac_dir_suffix= ac_top_builddir_sub=. ac_top_build_prefix= ;;
+*)
+ ac_dir_suffix=/`$as_echo "$ac_dir" | sed 's|^\.[\\/]||'`
+ # A ".." for each directory in $ac_dir_suffix.
+ ac_top_builddir_sub=`$as_echo "$ac_dir_suffix" | sed 's|/[^\\/]*|/..|g;s|/||'`
+ case $ac_top_builddir_sub in
+ "") ac_top_builddir_sub=. ac_top_build_prefix= ;;
+ *) ac_top_build_prefix=$ac_top_builddir_sub/ ;;
+ esac ;;
+esac
+ac_abs_top_builddir=$ac_pwd
+ac_abs_builddir=$ac_pwd$ac_dir_suffix
+# for backward compatibility:
+ac_top_builddir=$ac_top_build_prefix
+
+case $srcdir in
+ .) # We are building in place.
+ ac_srcdir=.
+ ac_top_srcdir=$ac_top_builddir_sub
+ ac_abs_top_srcdir=$ac_pwd ;;
+ [\\/]* | ?:[\\/]* ) # Absolute name.
+ ac_srcdir=$srcdir$ac_dir_suffix;
+ ac_top_srcdir=$srcdir
+ ac_abs_top_srcdir=$srcdir ;;
+ *) # Relative name.
+ ac_srcdir=$ac_top_build_prefix$srcdir$ac_dir_suffix
+ ac_top_srcdir=$ac_top_build_prefix$srcdir
+ ac_abs_top_srcdir=$ac_pwd/$srcdir ;;
+esac
+ac_abs_srcdir=$ac_abs_top_srcdir$ac_dir_suffix
+
+
+ case $ac_mode in
+ :F)
+ #
+ # CONFIG_FILE
+ #
+
+ case $INSTALL in
+ [\\/$]* | ?:[\\/]* ) ac_INSTALL=$INSTALL ;;
+ *) ac_INSTALL=$ac_top_build_prefix$INSTALL ;;
+ esac
+ ac_MKDIR_P=$MKDIR_P
+ case $MKDIR_P in
+ [\\/$]* | ?:[\\/]* ) ;;
+ */*) ac_MKDIR_P=$ac_top_build_prefix$MKDIR_P ;;
+ esac
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+# If the template does not know about datarootdir, expand it.
+# FIXME: This hack should be removed a few years after 2.60.
+ac_datarootdir_hack=; ac_datarootdir_seen=
+ac_sed_dataroot='
+/datarootdir/ {
+ p
+ q
+}
+/@datadir@/p
+/@docdir@/p
+/@infodir@/p
+/@localedir@/p
+/@mandir@/p'
+case `eval "sed -n \"\$ac_sed_dataroot\" $ac_file_inputs"` in
+*datarootdir*) ac_datarootdir_seen=yes;;
+*@datadir@*|*@docdir@*|*@infodir@*|*@localedir@*|*@mandir@*)
+ { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $ac_file_inputs seems to ignore the --datarootdir setting" >&5
+$as_echo "$as_me: WARNING: $ac_file_inputs seems to ignore the --datarootdir setting" >&2;}
+_ACEOF
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+ ac_datarootdir_hack='
+ s&@datadir@&$datadir&g
+ s&@docdir@&$docdir&g
+ s&@infodir@&$infodir&g
+ s&@localedir@&$localedir&g
+ s&@mandir@&$mandir&g
+ s&\\\${datarootdir}&$datarootdir&g' ;;
+esac
+_ACEOF
+
+# Neutralize VPATH when `$srcdir' = `.'.
+# Shell code in configure.ac might set extrasub.
+# FIXME: do we really want to maintain this feature?
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+ac_sed_extra="$ac_vpsub
+$extrasub
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+:t
+/@[a-zA-Z_][a-zA-Z_0-9]*@/!b
+s|@configure_input@|$ac_sed_conf_input|;t t
+s&@top_builddir@&$ac_top_builddir_sub&;t t
+s&@top_build_prefix@&$ac_top_build_prefix&;t t
+s&@srcdir@&$ac_srcdir&;t t
+s&@abs_srcdir@&$ac_abs_srcdir&;t t
+s&@top_srcdir@&$ac_top_srcdir&;t t
+s&@abs_top_srcdir@&$ac_abs_top_srcdir&;t t
+s&@builddir@&$ac_builddir&;t t
+s&@abs_builddir@&$ac_abs_builddir&;t t
+s&@abs_top_builddir@&$ac_abs_top_builddir&;t t
+s&@INSTALL@&$ac_INSTALL&;t t
+s&@MKDIR_P@&$ac_MKDIR_P&;t t
+$ac_datarootdir_hack
+"
+eval sed \"\$ac_sed_extra\" "$ac_file_inputs" | $AWK -f "$tmp/subs.awk" >$tmp/out \
+ || as_fn_error "could not create $ac_file" "$LINENO" 5
+
+test -z "$ac_datarootdir_hack$ac_datarootdir_seen" &&
+ { ac_out=`sed -n '/\${datarootdir}/p' "$tmp/out"`; test -n "$ac_out"; } &&
+ { ac_out=`sed -n '/^[ ]*datarootdir[ ]*:*=/p' "$tmp/out"`; test -z "$ac_out"; } &&
+ { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $ac_file contains a reference to the variable \`datarootdir'
+which seems to be undefined. Please make sure it is defined." >&5
+$as_echo "$as_me: WARNING: $ac_file contains a reference to the variable \`datarootdir'
+which seems to be undefined. Please make sure it is defined." >&2;}
+
+ rm -f "$tmp/stdin"
+ case $ac_file in
+ -) cat "$tmp/out" && rm -f "$tmp/out";;
+ *) rm -f "$ac_file" && mv "$tmp/out" "$ac_file";;
+ esac \
+ || as_fn_error "could not create $ac_file" "$LINENO" 5
+ ;;
+ :H)
+ #
+ # CONFIG_HEADER
+ #
+ if test x"$ac_file" != x-; then
+ {
+ $as_echo "/* $configure_input */" \
+ && eval '$AWK -f "$tmp/defines.awk"' "$ac_file_inputs"
+ } >"$tmp/config.h" \
+ || as_fn_error "could not create $ac_file" "$LINENO" 5
+ if diff "$ac_file" "$tmp/config.h" >/dev/null 2>&1; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: $ac_file is unchanged" >&5
+$as_echo "$as_me: $ac_file is unchanged" >&6;}
+ else
+ rm -f "$ac_file"
+ mv "$tmp/config.h" "$ac_file" \
+ || as_fn_error "could not create $ac_file" "$LINENO" 5
+ fi
+ else
+ $as_echo "/* $configure_input */" \
+ && eval '$AWK -f "$tmp/defines.awk"' "$ac_file_inputs" \
+ || as_fn_error "could not create -" "$LINENO" 5
+ fi
+# Compute "$ac_file"'s index in $config_headers.
+_am_arg="$ac_file"
+_am_stamp_count=1
+for _am_header in $config_headers :; do
+ case $_am_header in
+ $_am_arg | $_am_arg:* )
+ break ;;
+ * )
+ _am_stamp_count=`expr $_am_stamp_count + 1` ;;
+ esac
+done
+echo "timestamp for $_am_arg" >`$as_dirname -- "$_am_arg" ||
+$as_expr X"$_am_arg" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+ X"$_am_arg" : 'X\(//\)[^/]' \| \
+ X"$_am_arg" : 'X\(//\)$' \| \
+ X"$_am_arg" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X"$_am_arg" |
+ sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+ s//\1/
+ q
+ }
+ /^X\(\/\/\)[^/].*/{
+ s//\1/
+ q
+ }
+ /^X\(\/\/\)$/{
+ s//\1/
+ q
+ }
+ /^X\(\/\).*/{
+ s//\1/
+ q
+ }
+ s/.*/./; q'`/stamp-h$_am_stamp_count
+ ;;
+
+ :C) { $as_echo "$as_me:${as_lineno-$LINENO}: executing $ac_file commands" >&5
+$as_echo "$as_me: executing $ac_file commands" >&6;}
+ ;;
+ esac
+
+
+ case $ac_file$ac_mode in
+ "depfiles":C) test x"$AMDEP_TRUE" != x"" || {
+ # Autoconf 2.62 quotes --file arguments for eval, but not when files
+ # are listed without --file. Let's play safe and only enable the eval
+ # if we detect the quoting.
+ case $CONFIG_FILES in
+ *\'*) eval set x "$CONFIG_FILES" ;;
+ *) set x $CONFIG_FILES ;;
+ esac
+ shift
+ for mf
+ do
+ # Strip MF so we end up with the name of the file.
+ mf=`echo "$mf" | sed -e 's/:.*$//'`
+ # Check whether this is an Automake generated Makefile or not.
+ # We used to match only the files named `Makefile.in', but
+ # some people rename them; so instead we look at the file content.
+ # Grep'ing the first line is not enough: some people post-process
+ # each Makefile.in and add a new line on top of each file to say so.
+ # Grep'ing the whole file is not good either: AIX grep has a line
+ # limit of 2048, but all sed's we know have understand at least 4000.
+ if sed -n 's,^#.*generated by automake.*,X,p' "$mf" | grep X >/dev/null 2>&1; then
+ dirpart=`$as_dirname -- "$mf" ||
+$as_expr X"$mf" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+ X"$mf" : 'X\(//\)[^/]' \| \
+ X"$mf" : 'X\(//\)$' \| \
+ X"$mf" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X"$mf" |
+ sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+ s//\1/
+ q
+ }
+ /^X\(\/\/\)[^/].*/{
+ s//\1/
+ q
+ }
+ /^X\(\/\/\)$/{
+ s//\1/
+ q
+ }
+ /^X\(\/\).*/{
+ s//\1/
+ q
+ }
+ s/.*/./; q'`
+ else
+ continue
+ fi
+ # Extract the definition of DEPDIR, am__include, and am__quote
+ # from the Makefile without running `make'.
+ DEPDIR=`sed -n 's/^DEPDIR = //p' < "$mf"`
+ test -z "$DEPDIR" && continue
+ am__include=`sed -n 's/^am__include = //p' < "$mf"`
+ test -z "am__include" && continue
+ am__quote=`sed -n 's/^am__quote = //p' < "$mf"`
+ # When using ansi2knr, U may be empty or an underscore; expand it
+ U=`sed -n 's/^U = //p' < "$mf"`
+ # Find all dependency output files, they are included files with
+ # $(DEPDIR) in their names. We invoke sed twice because it is the
+ # simplest approach to changing $(DEPDIR) to its actual value in the
+ # expansion.
+ for file in `sed -n "
+ s/^$am__include $am__quote\(.*(DEPDIR).*\)$am__quote"'$/\1/p' <"$mf" | \
+ sed -e 's/\$(DEPDIR)/'"$DEPDIR"'/g' -e 's/\$U/'"$U"'/g'`; do
+ # Make sure the directory exists.
+ test -f "$dirpart/$file" && continue
+ fdir=`$as_dirname -- "$file" ||
+$as_expr X"$file" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+ X"$file" : 'X\(//\)[^/]' \| \
+ X"$file" : 'X\(//\)$' \| \
+ X"$file" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X"$file" |
+ sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+ s//\1/
+ q
+ }
+ /^X\(\/\/\)[^/].*/{
+ s//\1/
+ q
+ }
+ /^X\(\/\/\)$/{
+ s//\1/
+ q
+ }
+ /^X\(\/\).*/{
+ s//\1/
+ q
+ }
+ s/.*/./; q'`
+ as_dir=$dirpart/$fdir; as_fn_mkdir_p
+ # echo "creating $dirpart/$file"
+ echo '# dummy' > "$dirpart/$file"
+ done
+ done
+}
+ ;;
+ "libtool":C)
+
+ # See if we are running on zsh, and set the options which allow our
+ # commands through without removal of \ escapes.
+ if test -n "${ZSH_VERSION+set}" ; then
+ setopt NO_GLOB_SUBST
+ fi
+
+ cfgfile="${ofile}T"
+ trap "$RM \"$cfgfile\"; exit 1" 1 2 15
+ $RM "$cfgfile"
+
+ cat <<_LT_EOF >> "$cfgfile"
+#! $SHELL
+
+# `$ECHO "$ofile" | sed 's%^.*/%%'` - Provide generalized library-building support services.
+# Generated automatically by $as_me ($PACKAGE$TIMESTAMP) $VERSION
+# Libtool was configured on host `(hostname || uname -n) 2>/dev/null | sed 1q`:
+# NOTE: Changes made to this file will be lost: look at ltmain.sh.
+#
+# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005,
+# 2006, 2007, 2008 Free Software Foundation, Inc.
+# Written by Gordon Matzigkeit, 1996
+#
+# This file is part of GNU Libtool.
+#
+# GNU Libtool is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# As a special exception to the GNU General Public License,
+# if you distribute this file as part of a program or library that
+# is built using GNU Libtool, you may include this file under the
+# same distribution terms that you use for the rest of that program.
+#
+# GNU Libtool is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GNU Libtool; see the file COPYING. If not, a copy
+# can be downloaded from http://www.gnu.org/licenses/gpl.html, or
+# obtained by writing to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+
+
+# The names of the tagged configurations supported by this script.
+available_tags=""
+
+# ### BEGIN LIBTOOL CONFIG
+
+# A sed program that does not truncate output.
+SED=$lt_SED
+
+# Sed that helps us avoid accidentally triggering echo(1) options like -n.
+Xsed="\$SED -e 1s/^X//"
+
+# A grep program that handles long lines.
+GREP=$lt_GREP
+
+# An ERE matcher.
+EGREP=$lt_EGREP
+
+# A literal string matcher.
+FGREP=$lt_FGREP
+
+# Assembler program.
+AS=$AS
+
+# DLL creation program.
+DLLTOOL=$DLLTOOL
+
+# Object dumper program.
+OBJDUMP=$OBJDUMP
+
+# Which release of libtool.m4 was used?
+macro_version=$macro_version
+macro_revision=$macro_revision
+
+# Whether or not to build shared libraries.
+build_libtool_libs=$enable_shared
+
+# Whether or not to build static libraries.
+build_old_libs=$enable_static
+
+# What type of objects to build.
+pic_mode=$pic_mode
+
+# Whether or not to optimize for fast installation.
+fast_install=$enable_fast_install
+
+# The host system.
+host_alias=$host_alias
+host=$host
+host_os=$host_os
+
+# The build system.
+build_alias=$build_alias
+build=$build
+build_os=$build_os
+
+# A BSD- or MS-compatible name lister.
+NM=$lt_NM
+
+# Whether we need soft or hard links.
+LN_S=$lt_LN_S
+
+# What is the maximum length of a command?
+max_cmd_len=$max_cmd_len
+
+# Object file suffix (normally "o").
+objext=$ac_objext
+
+# Executable file suffix (normally "").
+exeext=$exeext
+
+# whether the shell understands "unset".
+lt_unset=$lt_unset
+
+# turn spaces into newlines.
+SP2NL=$lt_lt_SP2NL
+
+# turn newlines into spaces.
+NL2SP=$lt_lt_NL2SP
+
+# How to create reloadable object files.
+reload_flag=$lt_reload_flag
+reload_cmds=$lt_reload_cmds
+
+# Method to check whether dependent libraries are shared objects.
+deplibs_check_method=$lt_deplibs_check_method
+
+# Command to use when deplibs_check_method == "file_magic".
+file_magic_cmd=$lt_file_magic_cmd
+
+# The archiver.
+AR=$lt_AR
+AR_FLAGS=$lt_AR_FLAGS
+
+# A symbol stripping program.
+STRIP=$lt_STRIP
+
+# Commands used to install an old-style archive.
+RANLIB=$lt_RANLIB
+old_postinstall_cmds=$lt_old_postinstall_cmds
+old_postuninstall_cmds=$lt_old_postuninstall_cmds
+
+# A C compiler.
+LTCC=$lt_CC
+
+# LTCC compiler flags.
+LTCFLAGS=$lt_CFLAGS
+
+# Take the output of nm and produce a listing of raw symbols and C names.
+global_symbol_pipe=$lt_lt_cv_sys_global_symbol_pipe
+
+# Transform the output of nm in a proper C declaration.
+global_symbol_to_cdecl=$lt_lt_cv_sys_global_symbol_to_cdecl
+
+# Transform the output of nm in a C name address pair.
+global_symbol_to_c_name_address=$lt_lt_cv_sys_global_symbol_to_c_name_address
+
+# Transform the output of nm in a C name address pair when lib prefix is needed.
+global_symbol_to_c_name_address_lib_prefix=$lt_lt_cv_sys_global_symbol_to_c_name_address_lib_prefix
+
+# The name of the directory that contains temporary libtool files.
+objdir=$objdir
+
+# Shell to use when invoking shell scripts.
+SHELL=$lt_SHELL
+
+# An echo program that does not interpret backslashes.
+ECHO=$lt_ECHO
+
+# Used to examine libraries when file_magic_cmd begins with "file".
+MAGIC_CMD=$MAGIC_CMD
+
+# Must we lock files when doing compilation?
+need_locks=$lt_need_locks
+
+# Tool to manipulate archived DWARF debug symbol files on Mac OS X.
+DSYMUTIL=$lt_DSYMUTIL
+
+# Tool to change global to local symbols on Mac OS X.
+NMEDIT=$lt_NMEDIT
+
+# Tool to manipulate fat objects and archives on Mac OS X.
+LIPO=$lt_LIPO
+
+# ldd/readelf like tool for Mach-O binaries on Mac OS X.
+OTOOL=$lt_OTOOL
+
+# ldd/readelf like tool for 64 bit Mach-O binaries on Mac OS X 10.4.
+OTOOL64=$lt_OTOOL64
+
+# Old archive suffix (normally "a").
+libext=$libext
+
+# Shared library suffix (normally ".so").
+shrext_cmds=$lt_shrext_cmds
+
+# The commands to extract the exported symbol list from a shared archive.
+extract_expsyms_cmds=$lt_extract_expsyms_cmds
+
+# Variables whose values should be saved in libtool wrapper scripts and
+# restored at link time.
+variables_saved_for_relink=$lt_variables_saved_for_relink
+
+# Do we need the "lib" prefix for modules?
+need_lib_prefix=$need_lib_prefix
+
+# Do we need a version for libraries?
+need_version=$need_version
+
+# Library versioning type.
+version_type=$version_type
+
+# Shared library runtime path variable.
+runpath_var=$runpath_var
+
+# Shared library path variable.
+shlibpath_var=$shlibpath_var
+
+# Is shlibpath searched before the hard-coded library search path?
+shlibpath_overrides_runpath=$shlibpath_overrides_runpath
+
+# Format of library name prefix.
+libname_spec=$lt_libname_spec
+
+# List of archive names. First name is the real one, the rest are links.
+# The last name is the one that the linker finds with -lNAME
+library_names_spec=$lt_library_names_spec
+
+# The coded name of the library, if different from the real name.
+soname_spec=$lt_soname_spec
+
+# Command to use after installation of a shared archive.
+postinstall_cmds=$lt_postinstall_cmds
+
+# Command to use after uninstallation of a shared archive.
+postuninstall_cmds=$lt_postuninstall_cmds
+
+# Commands used to finish a libtool library installation in a directory.
+finish_cmds=$lt_finish_cmds
+
+# As "finish_cmds", except a single script fragment to be evaled but
+# not shown.
+finish_eval=$lt_finish_eval
+
+# Whether we should hardcode library paths into libraries.
+hardcode_into_libs=$hardcode_into_libs
+
+# Compile-time system search path for libraries.
+sys_lib_search_path_spec=$lt_sys_lib_search_path_spec
+
+# Run-time system search path for libraries.
+sys_lib_dlsearch_path_spec=$lt_sys_lib_dlsearch_path_spec
+
+# Whether dlopen is supported.
+dlopen_support=$enable_dlopen
+
+# Whether dlopen of programs is supported.
+dlopen_self=$enable_dlopen_self
+
+# Whether dlopen of statically linked programs is supported.
+dlopen_self_static=$enable_dlopen_self_static
+
+# Commands to strip libraries.
+old_striplib=$lt_old_striplib
+striplib=$lt_striplib
+
+
+# The linker used to build libraries.
+LD=$lt_LD
+
+# Commands used to build an old-style archive.
+old_archive_cmds=$lt_old_archive_cmds
+
+# A language specific compiler.
+CC=$lt_compiler
+
+# Is the compiler the GNU compiler?
+with_gcc=$GCC
+
+# Compiler flag to turn off builtin functions.
+no_builtin_flag=$lt_lt_prog_compiler_no_builtin_flag
+
+# How to pass a linker flag through the compiler.
+wl=$lt_lt_prog_compiler_wl
+
+# Additional compiler flags for building library objects.
+pic_flag=$lt_lt_prog_compiler_pic
+
+# Compiler flag to prevent dynamic linking.
+link_static_flag=$lt_lt_prog_compiler_static
+
+# Does compiler simultaneously support -c and -o options?
+compiler_c_o=$lt_lt_cv_prog_compiler_c_o
+
+# Whether or not to add -lc for building shared libraries.
+build_libtool_need_lc=$archive_cmds_need_lc
+
+# Whether or not to disallow shared libs when runtime libs are static.
+allow_libtool_libs_with_static_runtimes=$enable_shared_with_static_runtimes
+
+# Compiler flag to allow reflexive dlopens.
+export_dynamic_flag_spec=$lt_export_dynamic_flag_spec
+
+# Compiler flag to generate shared objects directly from archives.
+whole_archive_flag_spec=$lt_whole_archive_flag_spec
+
+# Whether the compiler copes with passing no objects directly.
+compiler_needs_object=$lt_compiler_needs_object
+
+# Create an old-style archive from a shared archive.
+old_archive_from_new_cmds=$lt_old_archive_from_new_cmds
+
+# Create a temporary old-style archive to link instead of a shared archive.
+old_archive_from_expsyms_cmds=$lt_old_archive_from_expsyms_cmds
+
+# Commands used to build a shared archive.
+archive_cmds=$lt_archive_cmds
+archive_expsym_cmds=$lt_archive_expsym_cmds
+
+# Commands used to build a loadable module if different from building
+# a shared archive.
+module_cmds=$lt_module_cmds
+module_expsym_cmds=$lt_module_expsym_cmds
+
+# Whether we are building with GNU ld or not.
+with_gnu_ld=$lt_with_gnu_ld
+
+# Flag that allows shared libraries with undefined symbols to be built.
+allow_undefined_flag=$lt_allow_undefined_flag
+
+# Flag that enforces no undefined symbols.
+no_undefined_flag=$lt_no_undefined_flag
+
+# Flag to hardcode \$libdir into a binary during linking.
+# This must work even if \$libdir does not exist
+hardcode_libdir_flag_spec=$lt_hardcode_libdir_flag_spec
+
+# If ld is used when linking, flag to hardcode \$libdir into a binary
+# during linking. This must work even if \$libdir does not exist.
+hardcode_libdir_flag_spec_ld=$lt_hardcode_libdir_flag_spec_ld
+
+# Whether we need a single "-rpath" flag with a separated argument.
+hardcode_libdir_separator=$lt_hardcode_libdir_separator
+
+# Set to "yes" if using DIR/libNAME\${shared_ext} during linking hardcodes
+# DIR into the resulting binary.
+hardcode_direct=$hardcode_direct
+
+# Set to "yes" if using DIR/libNAME\${shared_ext} during linking hardcodes
+# DIR into the resulting binary and the resulting library dependency is
+# "absolute",i.e impossible to change by setting \${shlibpath_var} if the
+# library is relocated.
+hardcode_direct_absolute=$hardcode_direct_absolute
+
+# Set to "yes" if using the -LDIR flag during linking hardcodes DIR
+# into the resulting binary.
+hardcode_minus_L=$hardcode_minus_L
+
+# Set to "yes" if using SHLIBPATH_VAR=DIR during linking hardcodes DIR
+# into the resulting binary.
+hardcode_shlibpath_var=$hardcode_shlibpath_var
+
+# Set to "yes" if building a shared library automatically hardcodes DIR
+# into the library and all subsequent libraries and executables linked
+# against it.
+hardcode_automatic=$hardcode_automatic
+
+# Set to yes if linker adds runtime paths of dependent libraries
+# to runtime path list.
+inherit_rpath=$inherit_rpath
+
+# Whether libtool must link a program against all its dependency libraries.
+link_all_deplibs=$link_all_deplibs
+
+# Fix the shell variable \$srcfile for the compiler.
+fix_srcfile_path=$lt_fix_srcfile_path
+
+# Set to "yes" if exported symbols are required.
+always_export_symbols=$always_export_symbols
+
+# The commands to list exported symbols.
+export_symbols_cmds=$lt_export_symbols_cmds
+
+# Symbols that should not be listed in the preloaded symbols.
+exclude_expsyms=$lt_exclude_expsyms
+
+# Symbols that must always be exported.
+include_expsyms=$lt_include_expsyms
+
+# Commands necessary for linking programs (against libraries) with templates.
+prelink_cmds=$lt_prelink_cmds
+
+# Specify filename containing input files.
+file_list_spec=$lt_file_list_spec
+
+# How to hardcode a shared library path into an executable.
+hardcode_action=$hardcode_action
+
+# ### END LIBTOOL CONFIG
+
+_LT_EOF
+
+ case $host_os in
+ aix3*)
+ cat <<\_LT_EOF >> "$cfgfile"
+# AIX sometimes has problems with the GCC collect2 program. For some
+# reason, if we set the COLLECT_NAMES environment variable, the problems
+# vanish in a puff of smoke.
+if test "X${COLLECT_NAMES+set}" != Xset; then
+ COLLECT_NAMES=
+ export COLLECT_NAMES
+fi
+_LT_EOF
+ ;;
+ esac
+
+
+ltmain="$ac_aux_dir/ltmain.sh"
+
+
+ # We use sed instead of cat because bash on DJGPP gets confused if
+ # if finds mixed CR/LF and LF-only lines. Since sed operates in
+ # text mode, it properly converts lines to CR/LF. This bash problem
+ # is reportedly fixed, but why not run on old versions too?
+ sed '/^# Generated shell functions inserted here/q' "$ltmain" >> "$cfgfile" \
+ || (rm -f "$cfgfile"; exit 1)
+
+ case $xsi_shell in
+ yes)
+ cat << \_LT_EOF >> "$cfgfile"
+
+# func_dirname file append nondir_replacement
+# Compute the dirname of FILE. If nonempty, add APPEND to the result,
+# otherwise set result to NONDIR_REPLACEMENT.
+func_dirname ()
+{
+ case ${1} in
+ */*) func_dirname_result="${1%/*}${2}" ;;
+ * ) func_dirname_result="${3}" ;;
+ esac
+}
+
+# func_basename file
+func_basename ()
+{
+ func_basename_result="${1##*/}"
+}
+
+# func_dirname_and_basename file append nondir_replacement
+# perform func_basename and func_dirname in a single function
+# call:
+# dirname: Compute the dirname of FILE. If nonempty,
+# add APPEND to the result, otherwise set result
+# to NONDIR_REPLACEMENT.
+# value returned in "$func_dirname_result"
+# basename: Compute filename of FILE.
+# value retuned in "$func_basename_result"
+# Implementation must be kept synchronized with func_dirname
+# and func_basename. For efficiency, we do not delegate to
+# those functions but instead duplicate the functionality here.
+func_dirname_and_basename ()
+{
+ case ${1} in
+ */*) func_dirname_result="${1%/*}${2}" ;;
+ * ) func_dirname_result="${3}" ;;
+ esac
+ func_basename_result="${1##*/}"
+}
+
+# func_stripname prefix suffix name
+# strip PREFIX and SUFFIX off of NAME.
+# PREFIX and SUFFIX must not contain globbing or regex special
+# characters, hashes, percent signs, but SUFFIX may contain a leading
+# dot (in which case that matches only a dot).
+func_stripname ()
+{
+ # pdksh 5.2.14 does not do ${X%$Y} correctly if both X and Y are
+ # positional parameters, so assign one to ordinary parameter first.
+ func_stripname_result=${3}
+ func_stripname_result=${func_stripname_result#"${1}"}
+ func_stripname_result=${func_stripname_result%"${2}"}
+}
+
+# func_opt_split
+func_opt_split ()
+{
+ func_opt_split_opt=${1%%=*}
+ func_opt_split_arg=${1#*=}
+}
+
+# func_lo2o object
+func_lo2o ()
+{
+ case ${1} in
+ *.lo) func_lo2o_result=${1%.lo}.${objext} ;;
+ *) func_lo2o_result=${1} ;;
+ esac
+}
+
+# func_xform libobj-or-source
+func_xform ()
+{
+ func_xform_result=${1%.*}.lo
+}
+
+# func_arith arithmetic-term...
+func_arith ()
+{
+ func_arith_result=$(( $* ))
+}
+
+# func_len string
+# STRING may not start with a hyphen.
+func_len ()
+{
+ func_len_result=${#1}
+}
+
+_LT_EOF
+ ;;
+ *) # Bourne compatible functions.
+ cat << \_LT_EOF >> "$cfgfile"
+
+# func_dirname file append nondir_replacement
+# Compute the dirname of FILE. If nonempty, add APPEND to the result,
+# otherwise set result to NONDIR_REPLACEMENT.
+func_dirname ()
+{
+ # Extract subdirectory from the argument.
+ func_dirname_result=`$ECHO "X${1}" | $Xsed -e "$dirname"`
+ if test "X$func_dirname_result" = "X${1}"; then
+ func_dirname_result="${3}"
+ else
+ func_dirname_result="$func_dirname_result${2}"
+ fi
+}
+
+# func_basename file
+func_basename ()
+{
+ func_basename_result=`$ECHO "X${1}" | $Xsed -e "$basename"`
+}
+
+
+# func_stripname prefix suffix name
+# strip PREFIX and SUFFIX off of NAME.
+# PREFIX and SUFFIX must not contain globbing or regex special
+# characters, hashes, percent signs, but SUFFIX may contain a leading
+# dot (in which case that matches only a dot).
+# func_strip_suffix prefix name
+func_stripname ()
+{
+ case ${2} in
+ .*) func_stripname_result=`$ECHO "X${3}" \
+ | $Xsed -e "s%^${1}%%" -e "s%\\\\${2}\$%%"`;;
+ *) func_stripname_result=`$ECHO "X${3}" \
+ | $Xsed -e "s%^${1}%%" -e "s%${2}\$%%"`;;
+ esac
+}
+
+# sed scripts:
+my_sed_long_opt='1s/^\(-[^=]*\)=.*/\1/;q'
+my_sed_long_arg='1s/^-[^=]*=//'
+
+# func_opt_split
+func_opt_split ()
+{
+ func_opt_split_opt=`$ECHO "X${1}" | $Xsed -e "$my_sed_long_opt"`
+ func_opt_split_arg=`$ECHO "X${1}" | $Xsed -e "$my_sed_long_arg"`
+}
+
+# func_lo2o object
+func_lo2o ()
+{
+ func_lo2o_result=`$ECHO "X${1}" | $Xsed -e "$lo2o"`
+}
+
+# func_xform libobj-or-source
+func_xform ()
+{
+ func_xform_result=`$ECHO "X${1}" | $Xsed -e 's/\.[^.]*$/.lo/'`
+}
+
+# func_arith arithmetic-term...
+func_arith ()
+{
+ func_arith_result=`expr "$@"`
+}
+
+# func_len string
+# STRING may not start with a hyphen.
+func_len ()
+{
+ func_len_result=`expr "$1" : ".*" 2>/dev/null || echo $max_cmd_len`
+}
+
+_LT_EOF
+esac
+
+case $lt_shell_append in
+ yes)
+ cat << \_LT_EOF >> "$cfgfile"
+
+# func_append var value
+# Append VALUE to the end of shell variable VAR.
+func_append ()
+{
+ eval "$1+=\$2"
+}
+_LT_EOF
+ ;;
+ *)
+ cat << \_LT_EOF >> "$cfgfile"
+
+# func_append var value
+# Append VALUE to the end of shell variable VAR.
+func_append ()
+{
+ eval "$1=\$$1\$2"
+}
+
+_LT_EOF
+ ;;
+ esac
+
+
+ sed -n '/^# Generated shell functions inserted here/,$p' "$ltmain" >> "$cfgfile" \
+ || (rm -f "$cfgfile"; exit 1)
+
+ mv -f "$cfgfile" "$ofile" ||
+ (rm -f "$ofile" && cp "$cfgfile" "$ofile" && rm -f "$cfgfile")
+ chmod +x "$ofile"
+
+ ;;
+ "libpng-config":F) chmod +x libpng-config ;;
+
+ esac
+done # for ac_tag
+
+
+as_fn_exit 0
+_ACEOF
+ac_clean_files=$ac_clean_files_save
+
+test $ac_write_fail = 0 ||
+ as_fn_error "write failure creating $CONFIG_STATUS" "$LINENO" 5
+
+
+# configure is writing to config.log, and then calls config.status.
+# config.status does its own redirection, appending to config.log.
+# Unfortunately, on DOS this fails, as config.log is still kept open
+# by configure, so config.status won't be able to write to it; its
+# output is simply discarded. So we exec the FD to /dev/null,
+# effectively closing config.log, so it can be properly (re)opened and
+# appended to by config.status. When coming back to configure, we
+# need to make the FD available again.
+if test "$no_create" != yes; then
+ ac_cs_success=:
+ ac_config_status_args=
+ test "$silent" = yes &&
+ ac_config_status_args="$ac_config_status_args --quiet"
+ exec 5>/dev/null
+ $SHELL $CONFIG_STATUS $ac_config_status_args || ac_cs_success=false
+ exec 5>>config.log
+ # Use ||, not &&, to avoid exiting from the if with $? = 1, which
+ # would make configure fail if this is the last instruction.
+ $ac_cs_success || as_fn_exit $?
+fi
+if test -n "$ac_unrecognized_opts" && test "$enable_option_checking" != no; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: unrecognized options: $ac_unrecognized_opts" >&5
+$as_echo "$as_me: WARNING: unrecognized options: $ac_unrecognized_opts" >&2;}
+fi
+
diff --git a/src/3rdparty/libpng/configure.ac b/src/3rdparty/libpng/configure.ac
new file mode 100644
index 0000000..dcdde1e
--- /dev/null
+++ b/src/3rdparty/libpng/configure.ac
@@ -0,0 +1,124 @@
+# configure.ac
+
+dnl Process this file with autoconf to produce a configure script.
+dnl
+dnl Minor upgrades (compatible ABI): increment the package version
+dnl (third field in two places below) and set the PNGLIB_RELEASE
+dnl variable.
+dnl
+dnl Major upgrades (incompatible ABI): increment the package major
+dnl version (second field, or first if desired), set the minor
+dnl to 0, set PNGLIB_MAJOR below *and* follow the instructions in
+dnl Makefile.am to upgrade the package name.
+
+dnl This is here to prevent earlier autoconf from being used, it
+dnl should not be necessary to regenerate configure if the time
+dnl stamps are correct
+AC_PREREQ(2.59)
+
+dnl Version number stuff here:
+
+AC_INIT([libpng], [1.4.0], [png-mng-implement@lists.sourceforge.net])
+AM_INIT_AUTOMAKE
+dnl stop configure from automagically running automake
+AM_MAINTAINER_MODE
+
+PNGLIB_VERSION=1.4.0
+PNGLIB_MAJOR=1
+PNGLIB_MINOR=4
+PNGLIB_RELEASE=0
+
+dnl End of version number stuff
+
+AC_CONFIG_SRCDIR([pngget.c])
+AM_CONFIG_HEADER(config.h)
+
+# Checks for programs.
+AC_PROG_CC
+AC_PROG_LD
+AC_PROG_CPP
+AC_CHECK_TOOL(SED, sed, :)
+AC_LIBTOOL_WIN32_DLL
+AC_PROG_INSTALL
+AC_PROG_LN_S
+AC_PROG_MAKE_SET
+AC_PROG_LIBTOOL
+
+# Checks for header files.
+AC_HEADER_STDC
+AC_CHECK_HEADERS([malloc.h stdlib.h string.h strings.h])
+
+# Checks for typedefs, structures, and compiler characteristics.
+AC_C_CONST
+AC_TYPE_SIZE_T
+AC_STRUCT_TM
+
+# Checks for library functions.
+AC_FUNC_STRTOD
+AC_CHECK_FUNCS([memset], , AC_ERROR([memset not found in libc]))
+AC_CHECK_FUNCS([pow], , AC_CHECK_LIB(m, pow, , AC_ERROR([cannot find pow])) )
+AC_CHECK_LIB(z, zlibVersion, , AC_ERROR([zlib not installed]))
+
+LIBPNG_DEFINES=-DPNG_CONFIGURE_LIBPNG
+LIBPNG_DEFINES=$LIBPNG_DEFINES
+AC_SUBST(LIBPNG_DEFINES)
+
+AC_MSG_CHECKING([if libraries can be versioned])
+GLD=`$LD --help < /dev/null 2>/dev/null | grep version-script`
+if test "$GLD"; then
+ have_ld_version_script=yes
+ AC_MSG_RESULT(yes)
+else
+ have_ld_version_script=no
+ AC_MSG_RESULT(no)
+ AC_MSG_WARN(*** You have not enabled versioned symbols.)
+fi
+AM_CONDITIONAL(HAVE_LD_VERSION_SCRIPT, test "$have_ld_version_script" = "yes")
+
+if test "$have_ld_version_script" = "yes"; then
+ AC_MSG_CHECKING([for symbol prefix])
+ SYMBOL_PREFIX=`echo "PREFIX=__USER_LABEL_PREFIX__" \
+ | ${CPP-${CC-gcc} -E} - 2>&1 \
+ | ${EGREP-grep} "^PREFIX=" \
+ | ${SED-sed} "s:^PREFIX=::"`
+ AC_SUBST(SYMBOL_PREFIX)
+ AC_MSG_RESULT($SYMBOL_PREFIX)
+fi
+
+# Substitutions for .in files
+AC_SUBST(PNGLIB_VERSION)
+AC_SUBST(PNGLIB_MAJOR)
+AC_SUBST(PNGLIB_MINOR)
+AC_SUBST(PNGLIB_RELEASE)
+
+# Additional arguments (and substitutions)
+# Allow the pkg-config directory to be set
+AC_ARG_WITH(pkgconfigdir,
+ AC_HELP_STRING([--with-pkgconfigdir],
+ [Use the specified pkgconfig dir (default is libdir/pkgconfig)]),
+ [pkgconfigdir=${withval}],
+ [pkgconfigdir='${libdir}/pkgconfig'])
+
+AC_SUBST([pkgconfigdir])
+AC_MSG_NOTICE([pkgconfig directory is ${pkgconfigdir}])
+
+# Make the *-config binary config scripts optional
+AC_ARG_WITH(binconfigs,
+ AC_HELP_STRING([--with-binconfigs],
+ [Generate shell libpng-config scripts as well as pkg-config data]
+ [@<:@default=yes@:>@]),
+ [if test "${withval}" = no; then
+ binconfigs=
+ AC_MSG_NOTICE([libpng-config scripts will not be built])
+ else
+ binconfigs='${binconfigs}'
+ fi],
+ [binconfigs='${binconfigs}'])
+AC_SUBST([binconfigs])
+
+# Config files, substituting as above
+AC_CONFIG_FILES([Makefile libpng.pc:libpng.pc.in])
+AC_CONFIG_FILES([libpng-config:libpng-config.in],
+ [chmod +x libpng-config])
+
+AC_OUTPUT
diff --git a/src/3rdparty/libpng/depcomp b/src/3rdparty/libpng/depcomp
new file mode 100755
index 0000000..df8eea7
--- /dev/null
+++ b/src/3rdparty/libpng/depcomp
@@ -0,0 +1,630 @@
+#! /bin/sh
+# depcomp - compile a program generating dependencies as side-effects
+
+scriptversion=2009-04-28.21; # UTC
+
+# Copyright (C) 1999, 2000, 2003, 2004, 2005, 2006, 2007, 2009 Free
+# Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that program.
+
+# Originally written by Alexandre Oliva <oliva@dcc.unicamp.br>.
+
+case $1 in
+ '')
+ echo "$0: No command. Try \`$0 --help' for more information." 1>&2
+ exit 1;
+ ;;
+ -h | --h*)
+ cat <<\EOF
+Usage: depcomp [--help] [--version] PROGRAM [ARGS]
+
+Run PROGRAMS ARGS to compile a file, generating dependencies
+as side-effects.
+
+Environment variables:
+ depmode Dependency tracking mode.
+ source Source file read by `PROGRAMS ARGS'.
+ object Object file output by `PROGRAMS ARGS'.
+ DEPDIR directory where to store dependencies.
+ depfile Dependency file to output.
+ tmpdepfile Temporary file to use when outputing dependencies.
+ libtool Whether libtool is used (yes/no).
+
+Report bugs to <bug-automake@gnu.org>.
+EOF
+ exit $?
+ ;;
+ -v | --v*)
+ echo "depcomp $scriptversion"
+ exit $?
+ ;;
+esac
+
+if test -z "$depmode" || test -z "$source" || test -z "$object"; then
+ echo "depcomp: Variables source, object and depmode must be set" 1>&2
+ exit 1
+fi
+
+# Dependencies for sub/bar.o or sub/bar.obj go into sub/.deps/bar.Po.
+depfile=${depfile-`echo "$object" |
+ sed 's|[^\\/]*$|'${DEPDIR-.deps}'/&|;s|\.\([^.]*\)$|.P\1|;s|Pobj$|Po|'`}
+tmpdepfile=${tmpdepfile-`echo "$depfile" | sed 's/\.\([^.]*\)$/.T\1/'`}
+
+rm -f "$tmpdepfile"
+
+# Some modes work just like other modes, but use different flags. We
+# parameterize here, but still list the modes in the big case below,
+# to make depend.m4 easier to write. Note that we *cannot* use a case
+# here, because this file can only contain one case statement.
+if test "$depmode" = hp; then
+ # HP compiler uses -M and no extra arg.
+ gccflag=-M
+ depmode=gcc
+fi
+
+if test "$depmode" = dashXmstdout; then
+ # This is just like dashmstdout with a different argument.
+ dashmflag=-xM
+ depmode=dashmstdout
+fi
+
+cygpath_u="cygpath -u -f -"
+if test "$depmode" = msvcmsys; then
+ # This is just like msvisualcpp but w/o cygpath translation.
+ # Just convert the backslash-escaped backslashes to single forward
+ # slashes to satisfy depend.m4
+ cygpath_u="sed s,\\\\\\\\,/,g"
+ depmode=msvisualcpp
+fi
+
+case "$depmode" in
+gcc3)
+## gcc 3 implements dependency tracking that does exactly what
+## we want. Yay! Note: for some reason libtool 1.4 doesn't like
+## it if -MD -MP comes after the -MF stuff. Hmm.
+## Unfortunately, FreeBSD c89 acceptance of flags depends upon
+## the command line argument order; so add the flags where they
+## appear in depend2.am. Note that the slowdown incurred here
+## affects only configure: in makefiles, %FASTDEP% shortcuts this.
+ for arg
+ do
+ case $arg in
+ -c) set fnord "$@" -MT "$object" -MD -MP -MF "$tmpdepfile" "$arg" ;;
+ *) set fnord "$@" "$arg" ;;
+ esac
+ shift # fnord
+ shift # $arg
+ done
+ "$@"
+ stat=$?
+ if test $stat -eq 0; then :
+ else
+ rm -f "$tmpdepfile"
+ exit $stat
+ fi
+ mv "$tmpdepfile" "$depfile"
+ ;;
+
+gcc)
+## There are various ways to get dependency output from gcc. Here's
+## why we pick this rather obscure method:
+## - Don't want to use -MD because we'd like the dependencies to end
+## up in a subdir. Having to rename by hand is ugly.
+## (We might end up doing this anyway to support other compilers.)
+## - The DEPENDENCIES_OUTPUT environment variable makes gcc act like
+## -MM, not -M (despite what the docs say).
+## - Using -M directly means running the compiler twice (even worse
+## than renaming).
+ if test -z "$gccflag"; then
+ gccflag=-MD,
+ fi
+ "$@" -Wp,"$gccflag$tmpdepfile"
+ stat=$?
+ if test $stat -eq 0; then :
+ else
+ rm -f "$tmpdepfile"
+ exit $stat
+ fi
+ rm -f "$depfile"
+ echo "$object : \\" > "$depfile"
+ alpha=ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz
+## The second -e expression handles DOS-style file names with drive letters.
+ sed -e 's/^[^:]*: / /' \
+ -e 's/^['$alpha']:\/[^:]*: / /' < "$tmpdepfile" >> "$depfile"
+## This next piece of magic avoids the `deleted header file' problem.
+## The problem is that when a header file which appears in a .P file
+## is deleted, the dependency causes make to die (because there is
+## typically no way to rebuild the header). We avoid this by adding
+## dummy dependencies for each header file. Too bad gcc doesn't do
+## this for us directly.
+ tr ' ' '
+' < "$tmpdepfile" |
+## Some versions of gcc put a space before the `:'. On the theory
+## that the space means something, we add a space to the output as
+## well.
+## Some versions of the HPUX 10.20 sed can't process this invocation
+## correctly. Breaking it into two sed invocations is a workaround.
+ sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
+ rm -f "$tmpdepfile"
+ ;;
+
+hp)
+ # This case exists only to let depend.m4 do its work. It works by
+ # looking at the text of this script. This case will never be run,
+ # since it is checked for above.
+ exit 1
+ ;;
+
+sgi)
+ if test "$libtool" = yes; then
+ "$@" "-Wp,-MDupdate,$tmpdepfile"
+ else
+ "$@" -MDupdate "$tmpdepfile"
+ fi
+ stat=$?
+ if test $stat -eq 0; then :
+ else
+ rm -f "$tmpdepfile"
+ exit $stat
+ fi
+ rm -f "$depfile"
+
+ if test -f "$tmpdepfile"; then # yes, the sourcefile depend on other files
+ echo "$object : \\" > "$depfile"
+
+ # Clip off the initial element (the dependent). Don't try to be
+ # clever and replace this with sed code, as IRIX sed won't handle
+ # lines with more than a fixed number of characters (4096 in
+ # IRIX 6.2 sed, 8192 in IRIX 6.5). We also remove comment lines;
+ # the IRIX cc adds comments like `#:fec' to the end of the
+ # dependency line.
+ tr ' ' '
+' < "$tmpdepfile" \
+ | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' | \
+ tr '
+' ' ' >> "$depfile"
+ echo >> "$depfile"
+
+ # The second pass generates a dummy entry for each header file.
+ tr ' ' '
+' < "$tmpdepfile" \
+ | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' -e 's/$/:/' \
+ >> "$depfile"
+ else
+ # The sourcefile does not contain any dependencies, so just
+ # store a dummy comment line, to avoid errors with the Makefile
+ # "include basename.Plo" scheme.
+ echo "#dummy" > "$depfile"
+ fi
+ rm -f "$tmpdepfile"
+ ;;
+
+aix)
+ # The C for AIX Compiler uses -M and outputs the dependencies
+ # in a .u file. In older versions, this file always lives in the
+ # current directory. Also, the AIX compiler puts `$object:' at the
+ # start of each line; $object doesn't have directory information.
+ # Version 6 uses the directory in both cases.
+ dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
+ test "x$dir" = "x$object" && dir=
+ base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
+ if test "$libtool" = yes; then
+ tmpdepfile1=$dir$base.u
+ tmpdepfile2=$base.u
+ tmpdepfile3=$dir.libs/$base.u
+ "$@" -Wc,-M
+ else
+ tmpdepfile1=$dir$base.u
+ tmpdepfile2=$dir$base.u
+ tmpdepfile3=$dir$base.u
+ "$@" -M
+ fi
+ stat=$?
+
+ if test $stat -eq 0; then :
+ else
+ rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
+ exit $stat
+ fi
+
+ for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
+ do
+ test -f "$tmpdepfile" && break
+ done
+ if test -f "$tmpdepfile"; then
+ # Each line is of the form `foo.o: dependent.h'.
+ # Do two passes, one to just change these to
+ # `$object: dependent.h' and one to simply `dependent.h:'.
+ sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile"
+ # That's a tab and a space in the [].
+ sed -e 's,^.*\.[a-z]*:[ ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
+ else
+ # The sourcefile does not contain any dependencies, so just
+ # store a dummy comment line, to avoid errors with the Makefile
+ # "include basename.Plo" scheme.
+ echo "#dummy" > "$depfile"
+ fi
+ rm -f "$tmpdepfile"
+ ;;
+
+icc)
+ # Intel's C compiler understands `-MD -MF file'. However on
+ # icc -MD -MF foo.d -c -o sub/foo.o sub/foo.c
+ # ICC 7.0 will fill foo.d with something like
+ # foo.o: sub/foo.c
+ # foo.o: sub/foo.h
+ # which is wrong. We want:
+ # sub/foo.o: sub/foo.c
+ # sub/foo.o: sub/foo.h
+ # sub/foo.c:
+ # sub/foo.h:
+ # ICC 7.1 will output
+ # foo.o: sub/foo.c sub/foo.h
+ # and will wrap long lines using \ :
+ # foo.o: sub/foo.c ... \
+ # sub/foo.h ... \
+ # ...
+
+ "$@" -MD -MF "$tmpdepfile"
+ stat=$?
+ if test $stat -eq 0; then :
+ else
+ rm -f "$tmpdepfile"
+ exit $stat
+ fi
+ rm -f "$depfile"
+ # Each line is of the form `foo.o: dependent.h',
+ # or `foo.o: dep1.h dep2.h \', or ` dep3.h dep4.h \'.
+ # Do two passes, one to just change these to
+ # `$object: dependent.h' and one to simply `dependent.h:'.
+ sed "s,^[^:]*:,$object :," < "$tmpdepfile" > "$depfile"
+ # Some versions of the HPUX 10.20 sed can't process this invocation
+ # correctly. Breaking it into two sed invocations is a workaround.
+ sed 's,^[^:]*: \(.*\)$,\1,;s/^\\$//;/^$/d;/:$/d' < "$tmpdepfile" |
+ sed -e 's/$/ :/' >> "$depfile"
+ rm -f "$tmpdepfile"
+ ;;
+
+hp2)
+ # The "hp" stanza above does not work with aCC (C++) and HP's ia64
+ # compilers, which have integrated preprocessors. The correct option
+ # to use with these is +Maked; it writes dependencies to a file named
+ # 'foo.d', which lands next to the object file, wherever that
+ # happens to be.
+ # Much of this is similar to the tru64 case; see comments there.
+ dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
+ test "x$dir" = "x$object" && dir=
+ base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
+ if test "$libtool" = yes; then
+ tmpdepfile1=$dir$base.d
+ tmpdepfile2=$dir.libs/$base.d
+ "$@" -Wc,+Maked
+ else
+ tmpdepfile1=$dir$base.d
+ tmpdepfile2=$dir$base.d
+ "$@" +Maked
+ fi
+ stat=$?
+ if test $stat -eq 0; then :
+ else
+ rm -f "$tmpdepfile1" "$tmpdepfile2"
+ exit $stat
+ fi
+
+ for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2"
+ do
+ test -f "$tmpdepfile" && break
+ done
+ if test -f "$tmpdepfile"; then
+ sed -e "s,^.*\.[a-z]*:,$object:," "$tmpdepfile" > "$depfile"
+ # Add `dependent.h:' lines.
+ sed -ne '2,${
+ s/^ *//
+ s/ \\*$//
+ s/$/:/
+ p
+ }' "$tmpdepfile" >> "$depfile"
+ else
+ echo "#dummy" > "$depfile"
+ fi
+ rm -f "$tmpdepfile" "$tmpdepfile2"
+ ;;
+
+tru64)
+ # The Tru64 compiler uses -MD to generate dependencies as a side
+ # effect. `cc -MD -o foo.o ...' puts the dependencies into `foo.o.d'.
+ # At least on Alpha/Redhat 6.1, Compaq CCC V6.2-504 seems to put
+ # dependencies in `foo.d' instead, so we check for that too.
+ # Subdirectories are respected.
+ dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
+ test "x$dir" = "x$object" && dir=
+ base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
+
+ if test "$libtool" = yes; then
+ # With Tru64 cc, shared objects can also be used to make a
+ # static library. This mechanism is used in libtool 1.4 series to
+ # handle both shared and static libraries in a single compilation.
+ # With libtool 1.4, dependencies were output in $dir.libs/$base.lo.d.
+ #
+ # With libtool 1.5 this exception was removed, and libtool now
+ # generates 2 separate objects for the 2 libraries. These two
+ # compilations output dependencies in $dir.libs/$base.o.d and
+ # in $dir$base.o.d. We have to check for both files, because
+ # one of the two compilations can be disabled. We should prefer
+ # $dir$base.o.d over $dir.libs/$base.o.d because the latter is
+ # automatically cleaned when .libs/ is deleted, while ignoring
+ # the former would cause a distcleancheck panic.
+ tmpdepfile1=$dir.libs/$base.lo.d # libtool 1.4
+ tmpdepfile2=$dir$base.o.d # libtool 1.5
+ tmpdepfile3=$dir.libs/$base.o.d # libtool 1.5
+ tmpdepfile4=$dir.libs/$base.d # Compaq CCC V6.2-504
+ "$@" -Wc,-MD
+ else
+ tmpdepfile1=$dir$base.o.d
+ tmpdepfile2=$dir$base.d
+ tmpdepfile3=$dir$base.d
+ tmpdepfile4=$dir$base.d
+ "$@" -MD
+ fi
+
+ stat=$?
+ if test $stat -eq 0; then :
+ else
+ rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" "$tmpdepfile4"
+ exit $stat
+ fi
+
+ for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" "$tmpdepfile4"
+ do
+ test -f "$tmpdepfile" && break
+ done
+ if test -f "$tmpdepfile"; then
+ sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile"
+ # That's a tab and a space in the [].
+ sed -e 's,^.*\.[a-z]*:[ ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
+ else
+ echo "#dummy" > "$depfile"
+ fi
+ rm -f "$tmpdepfile"
+ ;;
+
+#nosideeffect)
+ # This comment above is used by automake to tell side-effect
+ # dependency tracking mechanisms from slower ones.
+
+dashmstdout)
+ # Important note: in order to support this mode, a compiler *must*
+ # always write the preprocessed file to stdout, regardless of -o.
+ "$@" || exit $?
+
+ # Remove the call to Libtool.
+ if test "$libtool" = yes; then
+ while test "X$1" != 'X--mode=compile'; do
+ shift
+ done
+ shift
+ fi
+
+ # Remove `-o $object'.
+ IFS=" "
+ for arg
+ do
+ case $arg in
+ -o)
+ shift
+ ;;
+ $object)
+ shift
+ ;;
+ *)
+ set fnord "$@" "$arg"
+ shift # fnord
+ shift # $arg
+ ;;
+ esac
+ done
+
+ test -z "$dashmflag" && dashmflag=-M
+ # Require at least two characters before searching for `:'
+ # in the target name. This is to cope with DOS-style filenames:
+ # a dependency such as `c:/foo/bar' could be seen as target `c' otherwise.
+ "$@" $dashmflag |
+ sed 's:^[ ]*[^: ][^:][^:]*\:[ ]*:'"$object"'\: :' > "$tmpdepfile"
+ rm -f "$depfile"
+ cat < "$tmpdepfile" > "$depfile"
+ tr ' ' '
+' < "$tmpdepfile" | \
+## Some versions of the HPUX 10.20 sed can't process this invocation
+## correctly. Breaking it into two sed invocations is a workaround.
+ sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
+ rm -f "$tmpdepfile"
+ ;;
+
+dashXmstdout)
+ # This case only exists to satisfy depend.m4. It is never actually
+ # run, as this mode is specially recognized in the preamble.
+ exit 1
+ ;;
+
+makedepend)
+ "$@" || exit $?
+ # Remove any Libtool call
+ if test "$libtool" = yes; then
+ while test "X$1" != 'X--mode=compile'; do
+ shift
+ done
+ shift
+ fi
+ # X makedepend
+ shift
+ cleared=no eat=no
+ for arg
+ do
+ case $cleared in
+ no)
+ set ""; shift
+ cleared=yes ;;
+ esac
+ if test $eat = yes; then
+ eat=no
+ continue
+ fi
+ case "$arg" in
+ -D*|-I*)
+ set fnord "$@" "$arg"; shift ;;
+ # Strip any option that makedepend may not understand. Remove
+ # the object too, otherwise makedepend will parse it as a source file.
+ -arch)
+ eat=yes ;;
+ -*|$object)
+ ;;
+ *)
+ set fnord "$@" "$arg"; shift ;;
+ esac
+ done
+ obj_suffix=`echo "$object" | sed 's/^.*\././'`
+ touch "$tmpdepfile"
+ ${MAKEDEPEND-makedepend} -o"$obj_suffix" -f"$tmpdepfile" "$@"
+ rm -f "$depfile"
+ cat < "$tmpdepfile" > "$depfile"
+ sed '1,2d' "$tmpdepfile" | tr ' ' '
+' | \
+## Some versions of the HPUX 10.20 sed can't process this invocation
+## correctly. Breaking it into two sed invocations is a workaround.
+ sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
+ rm -f "$tmpdepfile" "$tmpdepfile".bak
+ ;;
+
+cpp)
+ # Important note: in order to support this mode, a compiler *must*
+ # always write the preprocessed file to stdout.
+ "$@" || exit $?
+
+ # Remove the call to Libtool.
+ if test "$libtool" = yes; then
+ while test "X$1" != 'X--mode=compile'; do
+ shift
+ done
+ shift
+ fi
+
+ # Remove `-o $object'.
+ IFS=" "
+ for arg
+ do
+ case $arg in
+ -o)
+ shift
+ ;;
+ $object)
+ shift
+ ;;
+ *)
+ set fnord "$@" "$arg"
+ shift # fnord
+ shift # $arg
+ ;;
+ esac
+ done
+
+ "$@" -E |
+ sed -n -e '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
+ -e '/^#line [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' |
+ sed '$ s: \\$::' > "$tmpdepfile"
+ rm -f "$depfile"
+ echo "$object : \\" > "$depfile"
+ cat < "$tmpdepfile" >> "$depfile"
+ sed < "$tmpdepfile" '/^$/d;s/^ //;s/ \\$//;s/$/ :/' >> "$depfile"
+ rm -f "$tmpdepfile"
+ ;;
+
+msvisualcpp)
+ # Important note: in order to support this mode, a compiler *must*
+ # always write the preprocessed file to stdout.
+ "$@" || exit $?
+
+ # Remove the call to Libtool.
+ if test "$libtool" = yes; then
+ while test "X$1" != 'X--mode=compile'; do
+ shift
+ done
+ shift
+ fi
+
+ IFS=" "
+ for arg
+ do
+ case "$arg" in
+ -o)
+ shift
+ ;;
+ $object)
+ shift
+ ;;
+ "-Gm"|"/Gm"|"-Gi"|"/Gi"|"-ZI"|"/ZI")
+ set fnord "$@"
+ shift
+ shift
+ ;;
+ *)
+ set fnord "$@" "$arg"
+ shift
+ shift
+ ;;
+ esac
+ done
+ "$@" -E 2>/dev/null |
+ sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::\1:p' | $cygpath_u | sort -u > "$tmpdepfile"
+ rm -f "$depfile"
+ echo "$object : \\" > "$depfile"
+ sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s:: \1 \\:p' >> "$depfile"
+ echo " " >> "$depfile"
+ sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::\1\::p' >> "$depfile"
+ rm -f "$tmpdepfile"
+ ;;
+
+msvcmsys)
+ # This case exists only to let depend.m4 do its work. It works by
+ # looking at the text of this script. This case will never be run,
+ # since it is checked for above.
+ exit 1
+ ;;
+
+none)
+ exec "$@"
+ ;;
+
+*)
+ echo "Unknown depmode $depmode" 1>&2
+ exit 1
+ ;;
+esac
+
+exit 0
+
+# Local Variables:
+# mode: shell-script
+# sh-indentation: 2
+# eval: (add-hook 'write-file-hooks 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-time-zone: "UTC"
+# time-stamp-end: "; # UTC"
+# End:
diff --git a/src/3rdparty/libpng/example.c b/src/3rdparty/libpng/example.c
new file mode 100644
index 0000000..8c5d87b
--- /dev/null
+++ b/src/3rdparty/libpng/example.c
@@ -0,0 +1,835 @@
+
+#if 0 /* in case someone actually tries to compile this */
+
+/* example.c - an example of using libpng
+ * Last changed in libpng 1.4.0 [January 3, 2010]
+ * This file has been placed in the public domain by the authors.
+ * Maintained 1998-2010 Glenn Randers-Pehrson
+ * Maintained 1996, 1997 Andreas Dilger)
+ * Written 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ */
+
+/* This is an example of how to use libpng to read and write PNG files.
+ * The file libpng.txt is much more verbose then this. If you have not
+ * read it, do so first. This was designed to be a starting point of an
+ * implementation. This is not officially part of libpng, is hereby placed
+ * in the public domain, and therefore does not require a copyright notice.
+ *
+ * This file does not currently compile, because it is missing certain
+ * parts, like allocating memory to hold an image. You will have to
+ * supply these parts to get it to compile. For an example of a minimal
+ * working PNG reader/writer, see pngtest.c, included in this distribution;
+ * see also the programs in the contrib directory.
+ */
+
+#include "png.h"
+
+ /* The png_jmpbuf() macro, used in error handling, became available in
+ * libpng version 1.0.6. If you want to be able to run your code with older
+ * versions of libpng, you must define the macro yourself (but only if it
+ * is not already defined by libpng!).
+ */
+
+#ifndef png_jmpbuf
+# define png_jmpbuf(png_ptr) ((png_ptr)->jmpbuf)
+#endif
+
+/* Check to see if a file is a PNG file using png_sig_cmp(). png_sig_cmp()
+ * returns zero if the image is a PNG and nonzero if it isn't a PNG.
+ *
+ * The function check_if_png() shown here, but not used, returns nonzero (true)
+ * if the file can be opened and is a PNG, 0 (false) otherwise.
+ *
+ * If this call is successful, and you are going to keep the file open,
+ * you should call png_set_sig_bytes(png_ptr, PNG_BYTES_TO_CHECK); once
+ * you have created the png_ptr, so that libpng knows your application
+ * has read that many bytes from the start of the file. Make sure you
+ * don't call png_set_sig_bytes() with more than 8 bytes read or give it
+ * an incorrect number of bytes read, or you will either have read too
+ * many bytes (your fault), or you are telling libpng to read the wrong
+ * number of magic bytes (also your fault).
+ *
+ * Many applications already read the first 2 or 4 bytes from the start
+ * of the image to determine the file type, so it would be easiest just
+ * to pass the bytes to png_sig_cmp() or even skip that if you know
+ * you have a PNG file, and call png_set_sig_bytes().
+ */
+#define PNG_BYTES_TO_CHECK 4
+int check_if_png(char *file_name, FILE **fp)
+{
+ char buf[PNG_BYTES_TO_CHECK];
+
+ /* Open the prospective PNG file. */
+ if ((*fp = fopen(file_name, "rb")) == NULL)
+ return 0;
+
+ /* Read in some of the signature bytes */
+ if (fread(buf, 1, PNG_BYTES_TO_CHECK, *fp) != PNG_BYTES_TO_CHECK)
+ return 0;
+
+ /* Compare the first PNG_BYTES_TO_CHECK bytes of the signature.
+ Return nonzero (true) if they match */
+
+ return(!png_sig_cmp(buf, (png_size_t)0, PNG_BYTES_TO_CHECK));
+}
+
+/* Read a PNG file. You may want to return an error code if the read
+ * fails (depending upon the failure). There are two "prototypes" given
+ * here - one where we are given the filename, and we need to open the
+ * file, and the other where we are given an open file (possibly with
+ * some or all of the magic bytes read - see comments above).
+ */
+#ifdef open_file /* prototype 1 */
+void read_png(char *file_name) /* We need to open the file */
+{
+ png_structp png_ptr;
+ png_infop info_ptr;
+ unsigned int sig_read = 0;
+ png_uint_32 width, height;
+ int bit_depth, color_type, interlace_type;
+ FILE *fp;
+
+ if ((fp = fopen(file_name, "rb")) == NULL)
+ return (ERROR);
+
+#else no_open_file /* prototype 2 */
+void read_png(FILE *fp, unsigned int sig_read) /* File is already open */
+{
+ png_structp png_ptr;
+ png_infop info_ptr;
+ png_uint_32 width, height;
+ int bit_depth, color_type, interlace_type;
+#endif no_open_file /* Only use one prototype! */
+
+ /* Create and initialize the png_struct with the desired error handler
+ * functions. If you want to use the default stderr and longjump method,
+ * you can supply NULL for the last three parameters. We also supply the
+ * the compiler header file version, so that we know if the application
+ * was compiled with a compatible version of the library. REQUIRED
+ */
+ png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING,
+ png_voidp user_error_ptr, user_error_fn, user_warning_fn);
+
+ if (png_ptr == NULL)
+ {
+ fclose(fp);
+ return (ERROR);
+ }
+
+ /* Allocate/initialize the memory for image information. REQUIRED. */
+ info_ptr = png_create_info_struct(png_ptr);
+ if (info_ptr == NULL)
+ {
+ fclose(fp);
+ png_destroy_read_struct(&png_ptr, NULL, NULL);
+ return (ERROR);
+ }
+
+ /* Set error handling if you are using the setjmp/longjmp method (this is
+ * the normal method of doing things with libpng). REQUIRED unless you
+ * set up your own error handlers in the png_create_read_struct() earlier.
+ */
+
+ if (setjmp(png_jmpbuf(png_ptr)))
+ {
+ /* Free all of the memory associated with the png_ptr and info_ptr */
+ png_destroy_read_struct(&png_ptr, &info_ptr, NULL);
+ fclose(fp);
+ /* If we get here, we had a problem reading the file */
+ return (ERROR);
+ }
+
+ /* One of the following I/O initialization methods is REQUIRED */
+#ifdef streams /* PNG file I/O method 1 */
+ /* Set up the input control if you are using standard C streams */
+ png_init_io(png_ptr, fp);
+
+#else no_streams /* PNG file I/O method 2 */
+ /* If you are using replacement read functions, instead of calling
+ * png_init_io() here you would call:
+ */
+ png_set_read_fn(png_ptr, (void *)user_io_ptr, user_read_fn);
+ /* where user_io_ptr is a structure you want available to the callbacks */
+#endif no_streams /* Use only one I/O method! */
+
+ /* If we have already read some of the signature */
+ png_set_sig_bytes(png_ptr, sig_read);
+
+#ifdef hilevel
+ /*
+ * If you have enough memory to read in the entire image at once,
+ * and you need to specify only transforms that can be controlled
+ * with one of the PNG_TRANSFORM_* bits (this presently excludes
+ * dithering, filling, setting background, and doing gamma
+ * adjustment), then you can read the entire image (including
+ * pixels) into the info structure with this call:
+ */
+ png_read_png(png_ptr, info_ptr, png_transforms, NULL);
+
+#else
+ /* OK, you're doing it the hard way, with the lower-level functions */
+
+ /* The call to png_read_info() gives us all of the information from the
+ * PNG file before the first IDAT (image data chunk). REQUIRED
+ */
+ png_read_info(png_ptr, info_ptr);
+
+ png_get_IHDR(png_ptr, info_ptr, &width, &height, &bit_depth, &color_type,
+ &interlace_type, NULL, NULL);
+
+ /* Set up the data transformations you want. Note that these are all
+ * optional. Only call them if you want/need them. Many of the
+ * transformations only work on specific types of images, and many
+ * are mutually exclusive.
+ */
+
+ /* Tell libpng to strip 16 bit/color files down to 8 bits/color */
+ png_set_strip_16(png_ptr);
+
+ /* Strip alpha bytes from the input data without combining with the
+ * background (not recommended).
+ */
+ png_set_strip_alpha(png_ptr);
+
+ /* Extract multiple pixels with bit depths of 1, 2, and 4 from a single
+ * byte into separate bytes (useful for paletted and grayscale images).
+ */
+ png_set_packing(png_ptr);
+
+ /* Change the order of packed pixels to least significant bit first
+ * (not useful if you are using png_set_packing). */
+ png_set_packswap(png_ptr);
+
+ /* Expand paletted colors into true RGB triplets */
+ if (color_type == PNG_COLOR_TYPE_PALETTE)
+ png_set_palette_to_rgb(png_ptr);
+
+ /* Expand grayscale images to the full 8 bits from 1, 2, or 4 bits/pixel */
+ if (color_type == PNG_COLOR_TYPE_GRAY && bit_depth < 8)
+ png_set_expand_gray_1_2_4_to_8(png_ptr);
+
+ /* Expand paletted or RGB images with transparency to full alpha channels
+ * so the data will be available as RGBA quartets.
+ */
+ if (png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS))
+ png_set_tRNS_to_alpha(png_ptr);
+
+ /* Set the background color to draw transparent and alpha images over.
+ * It is possible to set the red, green, and blue components directly
+ * for paletted images instead of supplying a palette index. Note that
+ * even if the PNG file supplies a background, you are not required to
+ * use it - you should use the (solid) application background if it has one.
+ */
+
+ png_color_16 my_background, *image_background;
+
+ if (png_get_bKGD(png_ptr, info_ptr, &image_background))
+ png_set_background(png_ptr, image_background,
+ PNG_BACKGROUND_GAMMA_FILE, 1, 1.0);
+ else
+ png_set_background(png_ptr, &my_background,
+ PNG_BACKGROUND_GAMMA_SCREEN, 0, 1.0);
+
+ /* Some suggestions as to how to get a screen gamma value
+ *
+ * Note that screen gamma is the display_exponent, which includes
+ * the CRT_exponent and any correction for viewing conditions
+ */
+ if (/* We have a user-defined screen gamma value */)
+ {
+ screen_gamma = user-defined screen_gamma;
+ }
+ /* This is one way that applications share the same screen gamma value */
+ else if ((gamma_str = getenv("SCREEN_GAMMA")) != NULL)
+ {
+ screen_gamma = atof(gamma_str);
+ }
+ /* If we don't have another value */
+ else
+ {
+ screen_gamma = 2.2; /* A good guess for a PC monitor in a dimly
+ lit room */
+ screen_gamma = 1.7 or 1.0; /* A good guess for Mac systems */
+ }
+
+ /* Tell libpng to handle the gamma conversion for you. The final call
+ * is a good guess for PC generated images, but it should be configurable
+ * by the user at run time by the user. It is strongly suggested that
+ * your application support gamma correction.
+ */
+
+ int intent;
+
+ if (png_get_sRGB(png_ptr, info_ptr, &intent))
+ png_set_gamma(png_ptr, screen_gamma, 0.45455);
+ else
+ {
+ double image_gamma;
+ if (png_get_gAMA(png_ptr, info_ptr, &image_gamma))
+ png_set_gamma(png_ptr, screen_gamma, image_gamma);
+ else
+ png_set_gamma(png_ptr, screen_gamma, 0.45455);
+ }
+
+ /* Dither RGB files down to 8 bit palette or reduce palettes
+ * to the number of colors available on your screen.
+ */
+ if (color_type & PNG_COLOR_MASK_COLOR)
+ {
+ int num_palette;
+ png_colorp palette;
+
+ /* This reduces the image to the application supplied palette */
+ if (/* We have our own palette */)
+ {
+ /* An array of colors to which the image should be dithered */
+ png_color std_color_cube[MAX_SCREEN_COLORS];
+
+ png_set_dither(png_ptr, std_color_cube, MAX_SCREEN_COLORS,
+ MAX_SCREEN_COLORS, NULL, 0);
+ }
+ /* This reduces the image to the palette supplied in the file */
+ else if (png_get_PLTE(png_ptr, info_ptr, &palette, &num_palette))
+ {
+ png_uint_16p histogram = NULL;
+
+ png_get_hIST(png_ptr, info_ptr, &histogram);
+
+ png_set_dither(png_ptr, palette, num_palette,
+ max_screen_colors, histogram, 0);
+ }
+ }
+
+ /* Invert monochrome files to have 0 as white and 1 as black */
+ png_set_invert_mono(png_ptr);
+
+ /* If you want to shift the pixel values from the range [0,255] or
+ * [0,65535] to the original [0,7] or [0,31], or whatever range the
+ * colors were originally in:
+ */
+ if (png_get_valid(png_ptr, info_ptr, PNG_INFO_sBIT))
+ {
+ png_color_8p sig_bit_p;
+
+ png_get_sBIT(png_ptr, info_ptr, &sig_bit_p);
+ png_set_shift(png_ptr, sig_bit_p);
+ }
+
+ /* Flip the RGB pixels to BGR (or RGBA to BGRA) */
+ if (color_type & PNG_COLOR_MASK_COLOR)
+ png_set_bgr(png_ptr);
+
+ /* Swap the RGBA or GA data to ARGB or AG (or BGRA to ABGR) */
+ png_set_swap_alpha(png_ptr);
+
+ /* Swap bytes of 16 bit files to least significant byte first */
+ png_set_swap(png_ptr);
+
+ /* Add filler (or alpha) byte (before/after each RGB triplet) */
+ png_set_filler(png_ptr, 0xff, PNG_FILLER_AFTER);
+
+ /* Turn on interlace handling. REQUIRED if you are not using
+ * png_read_image(). To see how to handle interlacing passes,
+ * see the png_read_row() method below:
+ */
+ number_passes = png_set_interlace_handling(png_ptr);
+
+ /* Optional call to gamma correct and add the background to the palette
+ * and update info structure. REQUIRED if you are expecting libpng to
+ * update the palette for you (ie you selected such a transform above).
+ */
+ png_read_update_info(png_ptr, info_ptr);
+
+ /* Allocate the memory to hold the image using the fields of info_ptr. */
+
+ /* The easiest way to read the image: */
+ png_bytep row_pointers[height];
+
+ /* Clear the pointer array */
+ for (row = 0; row < height; row++)
+ row_pointers[row] = NULL;
+
+ for (row = 0; row < height; row++)
+ row_pointers[row] = png_malloc(png_ptr, png_get_rowbytes(png_ptr,
+ info_ptr));
+
+ /* Now it's time to read the image. One of these methods is REQUIRED */
+#ifdef entire /* Read the entire image in one go */
+ png_read_image(png_ptr, row_pointers);
+
+#else no_entire /* Read the image one or more scanlines at a time */
+ /* The other way to read images - deal with interlacing: */
+
+ for (pass = 0; pass < number_passes; pass++)
+ {
+#ifdef single /* Read the image a single row at a time */
+ for (y = 0; y < height; y++)
+ {
+ png_read_rows(png_ptr, &row_pointers[y], NULL, 1);
+ }
+
+#else no_single /* Read the image several rows at a time */
+ for (y = 0; y < height; y += number_of_rows)
+ {
+#ifdef sparkle /* Read the image using the "sparkle" effect. */
+ png_read_rows(png_ptr, &row_pointers[y], NULL,
+ number_of_rows);
+#else no_sparkle /* Read the image using the "rectangle" effect */
+ png_read_rows(png_ptr, NULL, &row_pointers[y],
+ number_of_rows);
+#endif no_sparkle /* Use only one of these two methods */
+ }
+
+ /* If you want to display the image after every pass, do so here */
+#endif no_single /* Use only one of these two methods */
+ }
+#endif no_entire /* Use only one of these two methods */
+
+ /* Read rest of file, and get additional chunks in info_ptr - REQUIRED */
+ png_read_end(png_ptr, info_ptr);
+#endif hilevel
+
+ /* At this point you have read the entire image */
+
+ /* Clean up after the read, and free any memory allocated - REQUIRED */
+ png_destroy_read_struct(&png_ptr, &info_ptr, NULL);
+
+ /* Close the file */
+ fclose(fp);
+
+ /* That's it */
+ return (OK);
+}
+
+/* Progressively read a file */
+
+int
+initialize_png_reader(png_structp *png_ptr, png_infop *info_ptr)
+{
+ /* Create and initialize the png_struct with the desired error handler
+ * functions. If you want to use the default stderr and longjump method,
+ * you can supply NULL for the last three parameters. We also check that
+ * the library version is compatible in case we are using dynamically
+ * linked libraries.
+ */
+ *png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING,
+ png_voidp user_error_ptr, user_error_fn, user_warning_fn);
+
+ if (*png_ptr == NULL)
+ {
+ *info_ptr = NULL;
+ return (ERROR);
+ }
+
+ *info_ptr = png_create_info_struct(png_ptr);
+
+ if (*info_ptr == NULL)
+ {
+ png_destroy_read_struct(png_ptr, info_ptr, NULL);
+ return (ERROR);
+ }
+
+ if (setjmp(png_jmpbuf((*png_ptr))))
+ {
+ png_destroy_read_struct(png_ptr, info_ptr, NULL);
+ return (ERROR);
+ }
+
+ /* This one's new. You will need to provide all three
+ * function callbacks, even if you aren't using them all.
+ * If you aren't using all functions, you can specify NULL
+ * parameters. Even when all three functions are NULL,
+ * you need to call png_set_progressive_read_fn().
+ * These functions shouldn't be dependent on global or
+ * static variables if you are decoding several images
+ * simultaneously. You should store stream specific data
+ * in a separate struct, given as the second parameter,
+ * and retrieve the pointer from inside the callbacks using
+ * the function png_get_progressive_ptr(png_ptr).
+ */
+ png_set_progressive_read_fn(*png_ptr, (void *)stream_data,
+ info_callback, row_callback, end_callback);
+
+ return (OK);
+}
+
+int
+process_data(png_structp *png_ptr, png_infop *info_ptr,
+ png_bytep buffer, png_uint_32 length)
+{
+ if (setjmp(png_jmpbuf((*png_ptr))))
+ {
+ /* Free the png_ptr and info_ptr memory on error */
+ png_destroy_read_struct(png_ptr, info_ptr, NULL);
+ return (ERROR);
+ }
+
+ /* This one's new also. Simply give it chunks of data as
+ * they arrive from the data stream (in order, of course).
+ * On segmented machines, don't give it any more than 64K.
+ * The library seems to run fine with sizes of 4K, although
+ * you can give it much less if necessary (I assume you can
+ * give it chunks of 1 byte, but I haven't tried with less
+ * than 256 bytes yet). When this function returns, you may
+ * want to display any rows that were generated in the row
+ * callback, if you aren't already displaying them there.
+ */
+ png_process_data(*png_ptr, *info_ptr, buffer, length);
+ return (OK);
+}
+
+info_callback(png_structp png_ptr, png_infop info)
+{
+ /* Do any setup here, including setting any of the transformations
+ * mentioned in the Reading PNG files section. For now, you _must_
+ * call either png_start_read_image() or png_read_update_info()
+ * after all the transformations are set (even if you don't set
+ * any). You may start getting rows before png_process_data()
+ * returns, so this is your last chance to prepare for that.
+ */
+}
+
+row_callback(png_structp png_ptr, png_bytep new_row,
+ png_uint_32 row_num, int pass)
+{
+ /*
+ * This function is called for every row in the image. If the
+ * image is interlaced, and you turned on the interlace handler,
+ * this function will be called for every row in every pass.
+ *
+ * In this function you will receive a pointer to new row data from
+ * libpng called new_row that is to replace a corresponding row (of
+ * the same data format) in a buffer allocated by your application.
+ *
+ * The new row data pointer "new_row" may be NULL, indicating there is
+ * no new data to be replaced (in cases of interlace loading).
+ *
+ * If new_row is not NULL then you need to call
+ * png_progressive_combine_row() to replace the corresponding row as
+ * shown below:
+ */
+
+ /* Check if row_num is in bounds. */
+ if ((row_num >= 0) && (row_num < height))
+ {
+ /* Get pointer to corresponding row in our
+ * PNG read buffer.
+ */
+ png_bytep old_row = ((png_bytep *)our_data)[row_num];
+
+ /* If both rows are allocated then copy the new row
+ * data to the corresponding row data.
+ */
+ if ((old_row != NULL) && (new_row != NULL))
+ png_progressive_combine_row(png_ptr, old_row, new_row);
+ }
+ /*
+ * The rows and passes are called in order, so you don't really
+ * need the row_num and pass, but I'm supplying them because it
+ * may make your life easier.
+ *
+ * For the non-NULL rows of interlaced images, you must call
+ * png_progressive_combine_row() passing in the new row and the
+ * old row, as demonstrated above. You can call this function for
+ * NULL rows (it will just return) and for non-interlaced images
+ * (it just does the png_memcpy for you) if it will make the code
+ * easier. Thus, you can just do this for all cases:
+ */
+
+ png_progressive_combine_row(png_ptr, old_row, new_row);
+
+ /* where old_row is what was displayed for previous rows. Note
+ * that the first pass (pass == 0 really) will completely cover
+ * the old row, so the rows do not have to be initialized. After
+ * the first pass (and only for interlaced images), you will have
+ * to pass the current row as new_row, and the function will combine
+ * the old row and the new row.
+ */
+}
+
+end_callback(png_structp png_ptr, png_infop info)
+{
+ /* This function is called when the whole image has been read,
+ * including any chunks after the image (up to and including
+ * the IEND). You will usually have the same info chunk as you
+ * had in the header, although some data may have been added
+ * to the comments and time fields.
+ *
+ * Most people won't do much here, perhaps setting a flag that
+ * marks the image as finished.
+ */
+}
+
+/* Write a png file */
+void write_png(char *file_name /* , ... other image information ... */)
+{
+ FILE *fp;
+ png_structp png_ptr;
+ png_infop info_ptr;
+ png_colorp palette;
+
+ /* Open the file */
+ fp = fopen(file_name, "wb");
+ if (fp == NULL)
+ return (ERROR);
+
+ /* Create and initialize the png_struct with the desired error handler
+ * functions. If you want to use the default stderr and longjump method,
+ * you can supply NULL for the last three parameters. We also check that
+ * the library version is compatible with the one used at compile time,
+ * in case we are using dynamically linked libraries. REQUIRED.
+ */
+ png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING,
+ png_voidp user_error_ptr, user_error_fn, user_warning_fn);
+
+ if (png_ptr == NULL)
+ {
+ fclose(fp);
+ return (ERROR);
+ }
+
+ /* Allocate/initialize the image information data. REQUIRED */
+ info_ptr = png_create_info_struct(png_ptr);
+ if (info_ptr == NULL)
+ {
+ fclose(fp);
+ png_destroy_write_struct(&png_ptr, NULL);
+ return (ERROR);
+ }
+
+ /* Set error handling. REQUIRED if you aren't supplying your own
+ * error handling functions in the png_create_write_struct() call.
+ */
+ if (setjmp(png_jmpbuf(png_ptr)))
+ {
+ /* If we get here, we had a problem writing the file */
+ fclose(fp);
+ png_destroy_write_struct(&png_ptr, &info_ptr);
+ return (ERROR);
+ }
+
+ /* One of the following I/O initialization functions is REQUIRED */
+
+#ifdef streams /* I/O initialization method 1 */
+ /* Set up the output control if you are using standard C streams */
+ png_init_io(png_ptr, fp);
+
+#else no_streams /* I/O initialization method 2 */
+ /* If you are using replacement write functions, instead of calling
+ * png_init_io() here you would call
+ */
+ png_set_write_fn(png_ptr, (void *)user_io_ptr, user_write_fn,
+ user_IO_flush_function);
+ /* where user_io_ptr is a structure you want available to the callbacks */
+#endif no_streams /* Only use one initialization method */
+
+#ifdef hilevel
+ /* This is the easy way. Use it if you already have all the
+ * image info living in the structure. You could "|" many
+ * PNG_TRANSFORM flags into the png_transforms integer here.
+ */
+ png_write_png(png_ptr, info_ptr, png_transforms, NULL);
+
+#else
+ /* This is the hard way */
+
+ /* Set the image information here. Width and height are up to 2^31,
+ * bit_depth is one of 1, 2, 4, 8, or 16, but valid values also depend on
+ * the color_type selected. color_type is one of PNG_COLOR_TYPE_GRAY,
+ * PNG_COLOR_TYPE_GRAY_ALPHA, PNG_COLOR_TYPE_PALETTE, PNG_COLOR_TYPE_RGB,
+ * or PNG_COLOR_TYPE_RGB_ALPHA. interlace is either PNG_INTERLACE_NONE or
+ * PNG_INTERLACE_ADAM7, and the compression_type and filter_type MUST
+ * currently be PNG_COMPRESSION_TYPE_BASE and PNG_FILTER_TYPE_BASE. REQUIRED
+ */
+ png_set_IHDR(png_ptr, info_ptr, width, height, bit_depth, PNG_COLOR_TYPE_???,
+ PNG_INTERLACE_????, PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE);
+
+ /* Set the palette if there is one. REQUIRED for indexed-color images */
+ palette = (png_colorp)png_malloc(png_ptr, PNG_MAX_PALETTE_LENGTH
+ * png_sizeof(png_color));
+ /* ... Set palette colors ... */
+ png_set_PLTE(png_ptr, info_ptr, palette, PNG_MAX_PALETTE_LENGTH);
+ /* You must not free palette here, because png_set_PLTE only makes a link to
+ * the palette that you malloced. Wait until you are about to destroy
+ * the png structure.
+ */
+
+ /* Optional significant bit (sBIT) chunk */
+ png_color_8 sig_bit;
+ /* If we are dealing with a grayscale image then */
+ sig_bit.gray = true_bit_depth;
+ /* Otherwise, if we are dealing with a color image then */
+ sig_bit.red = true_red_bit_depth;
+ sig_bit.green = true_green_bit_depth;
+ sig_bit.blue = true_blue_bit_depth;
+ /* If the image has an alpha channel then */
+ sig_bit.alpha = true_alpha_bit_depth;
+ png_set_sBIT(png_ptr, info_ptr, &sig_bit);
+
+
+ /* Optional gamma chunk is strongly suggested if you have any guess
+ * as to the correct gamma of the image.
+ */
+ png_set_gAMA(png_ptr, info_ptr, gamma);
+
+ /* Optionally write comments into the image */
+ text_ptr[0].key = "Title";
+ text_ptr[0].text = "Mona Lisa";
+ text_ptr[0].compression = PNG_TEXT_COMPRESSION_NONE;
+ text_ptr[1].key = "Author";
+ text_ptr[1].text = "Leonardo DaVinci";
+ text_ptr[1].compression = PNG_TEXT_COMPRESSION_NONE;
+ text_ptr[2].key = "Description";
+ text_ptr[2].text = "<long text>";
+ text_ptr[2].compression = PNG_TEXT_COMPRESSION_zTXt;
+#ifdef PNG_iTXt_SUPPORTED
+ text_ptr[0].lang = NULL;
+ text_ptr[1].lang = NULL;
+ text_ptr[2].lang = NULL;
+#endif
+ png_set_text(png_ptr, info_ptr, text_ptr, 3);
+
+ /* Other optional chunks like cHRM, bKGD, tRNS, tIME, oFFs, pHYs */
+
+ /* Note that if sRGB is present the gAMA and cHRM chunks must be ignored
+ * on read and, if your application chooses to write them, they must
+ * be written in accordance with the sRGB profile
+ */
+
+ /* Write the file header information. REQUIRED */
+ png_write_info(png_ptr, info_ptr);
+
+ /* If you want, you can write the info in two steps, in case you need to
+ * write your private chunk ahead of PLTE:
+ *
+ * png_write_info_before_PLTE(write_ptr, write_info_ptr);
+ * write_my_chunk();
+ * png_write_info(png_ptr, info_ptr);
+ *
+ * However, given the level of known- and unknown-chunk support in 1.2.0
+ * and up, this should no longer be necessary.
+ */
+
+ /* Once we write out the header, the compression type on the text
+ * chunks gets changed to PNG_TEXT_COMPRESSION_NONE_WR or
+ * PNG_TEXT_COMPRESSION_zTXt_WR, so it doesn't get written out again
+ * at the end.
+ */
+
+ /* Set up the transformations you want. Note that these are
+ * all optional. Only call them if you want them.
+ */
+
+ /* Invert monochrome pixels */
+ png_set_invert_mono(png_ptr);
+
+ /* Shift the pixels up to a legal bit depth and fill in
+ * as appropriate to correctly scale the image.
+ */
+ png_set_shift(png_ptr, &sig_bit);
+
+ /* Pack pixels into bytes */
+ png_set_packing(png_ptr);
+
+ /* Swap location of alpha bytes from ARGB to RGBA */
+ png_set_swap_alpha(png_ptr);
+
+ /* Get rid of filler (OR ALPHA) bytes, pack XRGB/RGBX/ARGB/RGBA into
+ * RGB (4 channels -> 3 channels). The second parameter is not used.
+ */
+ png_set_filler(png_ptr, 0, PNG_FILLER_BEFORE);
+
+ /* Flip BGR pixels to RGB */
+ png_set_bgr(png_ptr);
+
+ /* Swap bytes of 16-bit files to most significant byte first */
+ png_set_swap(png_ptr);
+
+ /* Swap bits of 1, 2, 4 bit packed pixel formats */
+ png_set_packswap(png_ptr);
+
+ /* Turn on interlace handling if you are not using png_write_image() */
+ if (interlacing)
+ number_passes = png_set_interlace_handling(png_ptr);
+ else
+ number_passes = 1;
+
+ /* The easiest way to write the image (you may have a different memory
+ * layout, however, so choose what fits your needs best). You need to
+ * use the first method if you aren't handling interlacing yourself.
+ */
+ png_uint_32 k, height, width;
+ png_byte image[height][width*bytes_per_pixel];
+ png_bytep row_pointers[height];
+
+ if (height > PNG_UINT_32_MAX/png_sizeof(png_bytep))
+ png_error (png_ptr, "Image is too tall to process in memory");
+
+ for (k = 0; k < height; k++)
+ row_pointers[k] = image + k*width*bytes_per_pixel;
+
+ /* One of the following output methods is REQUIRED */
+
+#ifdef entire /* Write out the entire image data in one call */
+ png_write_image(png_ptr, row_pointers);
+
+ /* The other way to write the image - deal with interlacing */
+
+#else no_entire /* Write out the image data by one or more scanlines */
+
+ /* The number of passes is either 1 for non-interlaced images,
+ * or 7 for interlaced images.
+ */
+ for (pass = 0; pass < number_passes; pass++)
+ {
+ /* Write a few rows at a time. */
+ png_write_rows(png_ptr, &row_pointers[first_row], number_of_rows);
+
+ /* If you are only writing one row at a time, this works */
+ for (y = 0; y < height; y++)
+ png_write_rows(png_ptr, &row_pointers[y], 1);
+ }
+#endif no_entire /* Use only one output method */
+
+ /* You can write optional chunks like tEXt, zTXt, and tIME at the end
+ * as well. Shouldn't be necessary in 1.2.0 and up as all the public
+ * chunks are supported and you can use png_set_unknown_chunks() to
+ * register unknown chunks into the info structure to be written out.
+ */
+
+ /* It is REQUIRED to call this to finish writing the rest of the file */
+ png_write_end(png_ptr, info_ptr);
+#endif hilevel
+
+ /* If you png_malloced a palette, free it here (don't free info_ptr->palette,
+ * as recommended in versions 1.0.5m and earlier of this example; if
+ * libpng mallocs info_ptr->palette, libpng will free it). If you
+ * allocated it with malloc() instead of png_malloc(), use free() instead
+ * of png_free().
+ */
+ png_free(png_ptr, palette);
+ palette = NULL;
+
+ /* Similarly, if you png_malloced any data that you passed in with
+ * png_set_something(), such as a hist or trans array, free it here,
+ * when you can be sure that libpng is through with it.
+ */
+ png_free(png_ptr, trans);
+ trans = NULL;
+ /* Whenever you use png_free() it is a good idea to set the pointer to
+ * NULL in case your application inadvertently tries to png_free() it
+ * again. When png_free() sees a NULL it returns without action, thus
+ * avoiding the double-free security problem.
+ */
+
+ /* Clean up after the write, and free any memory allocated */
+ png_destroy_write_struct(&png_ptr, &info_ptr);
+
+ /* Close the file */
+ fclose(fp);
+
+ /* That's it */
+ return (OK);
+}
+
+#endif /* if 0 */
diff --git a/src/3rdparty/libpng/install-sh b/src/3rdparty/libpng/install-sh
new file mode 100755
index 0000000..6781b98
--- /dev/null
+++ b/src/3rdparty/libpng/install-sh
@@ -0,0 +1,520 @@
+#!/bin/sh
+# install - install a program, script, or datafile
+
+scriptversion=2009-04-28.21; # UTC
+
+# This originates from X11R5 (mit/util/scripts/install.sh), which was
+# later released in X11R6 (xc/config/util/install.sh) with the
+# following copyright and license.
+#
+# Copyright (C) 1994 X Consortium
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to
+# deal in the Software without restriction, including without limitation the
+# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+# sell copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+# AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNEC-
+# TION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+# Except as contained in this notice, the name of the X Consortium shall not
+# be used in advertising or otherwise to promote the sale, use or other deal-
+# ings in this Software without prior written authorization from the X Consor-
+# tium.
+#
+#
+# FSF changes to this file are in the public domain.
+#
+# Calling this script install-sh is preferred over install.sh, to prevent
+# `make' implicit rules from creating a file called install from it
+# when there is no Makefile.
+#
+# This script is compatible with the BSD install script, but was written
+# from scratch.
+
+nl='
+'
+IFS=" "" $nl"
+
+# set DOITPROG to echo to test this script
+
+# Don't use :- since 4.3BSD and earlier shells don't like it.
+doit=${DOITPROG-}
+if test -z "$doit"; then
+ doit_exec=exec
+else
+ doit_exec=$doit
+fi
+
+# Put in absolute file names if you don't have them in your path;
+# or use environment vars.
+
+chgrpprog=${CHGRPPROG-chgrp}
+chmodprog=${CHMODPROG-chmod}
+chownprog=${CHOWNPROG-chown}
+cmpprog=${CMPPROG-cmp}
+cpprog=${CPPROG-cp}
+mkdirprog=${MKDIRPROG-mkdir}
+mvprog=${MVPROG-mv}
+rmprog=${RMPROG-rm}
+stripprog=${STRIPPROG-strip}
+
+posix_glob='?'
+initialize_posix_glob='
+ test "$posix_glob" != "?" || {
+ if (set -f) 2>/dev/null; then
+ posix_glob=
+ else
+ posix_glob=:
+ fi
+ }
+'
+
+posix_mkdir=
+
+# Desired mode of installed file.
+mode=0755
+
+chgrpcmd=
+chmodcmd=$chmodprog
+chowncmd=
+mvcmd=$mvprog
+rmcmd="$rmprog -f"
+stripcmd=
+
+src=
+dst=
+dir_arg=
+dst_arg=
+
+copy_on_change=false
+no_target_directory=
+
+usage="\
+Usage: $0 [OPTION]... [-T] SRCFILE DSTFILE
+ or: $0 [OPTION]... SRCFILES... DIRECTORY
+ or: $0 [OPTION]... -t DIRECTORY SRCFILES...
+ or: $0 [OPTION]... -d DIRECTORIES...
+
+In the 1st form, copy SRCFILE to DSTFILE.
+In the 2nd and 3rd, copy all SRCFILES to DIRECTORY.
+In the 4th, create DIRECTORIES.
+
+Options:
+ --help display this help and exit.
+ --version display version info and exit.
+
+ -c (ignored)
+ -C install only if different (preserve the last data modification time)
+ -d create directories instead of installing files.
+ -g GROUP $chgrpprog installed files to GROUP.
+ -m MODE $chmodprog installed files to MODE.
+ -o USER $chownprog installed files to USER.
+ -s $stripprog installed files.
+ -t DIRECTORY install into DIRECTORY.
+ -T report an error if DSTFILE is a directory.
+
+Environment variables override the default commands:
+ CHGRPPROG CHMODPROG CHOWNPROG CMPPROG CPPROG MKDIRPROG MVPROG
+ RMPROG STRIPPROG
+"
+
+while test $# -ne 0; do
+ case $1 in
+ -c) ;;
+
+ -C) copy_on_change=true;;
+
+ -d) dir_arg=true;;
+
+ -g) chgrpcmd="$chgrpprog $2"
+ shift;;
+
+ --help) echo "$usage"; exit $?;;
+
+ -m) mode=$2
+ case $mode in
+ *' '* | *' '* | *'
+'* | *'*'* | *'?'* | *'['*)
+ echo "$0: invalid mode: $mode" >&2
+ exit 1;;
+ esac
+ shift;;
+
+ -o) chowncmd="$chownprog $2"
+ shift;;
+
+ -s) stripcmd=$stripprog;;
+
+ -t) dst_arg=$2
+ shift;;
+
+ -T) no_target_directory=true;;
+
+ --version) echo "$0 $scriptversion"; exit $?;;
+
+ --) shift
+ break;;
+
+ -*) echo "$0: invalid option: $1" >&2
+ exit 1;;
+
+ *) break;;
+ esac
+ shift
+done
+
+if test $# -ne 0 && test -z "$dir_arg$dst_arg"; then
+ # When -d is used, all remaining arguments are directories to create.
+ # When -t is used, the destination is already specified.
+ # Otherwise, the last argument is the destination. Remove it from $@.
+ for arg
+ do
+ if test -n "$dst_arg"; then
+ # $@ is not empty: it contains at least $arg.
+ set fnord "$@" "$dst_arg"
+ shift # fnord
+ fi
+ shift # arg
+ dst_arg=$arg
+ done
+fi
+
+if test $# -eq 0; then
+ if test -z "$dir_arg"; then
+ echo "$0: no input file specified." >&2
+ exit 1
+ fi
+ # It's OK to call `install-sh -d' without argument.
+ # This can happen when creating conditional directories.
+ exit 0
+fi
+
+if test -z "$dir_arg"; then
+ trap '(exit $?); exit' 1 2 13 15
+
+ # Set umask so as not to create temps with too-generous modes.
+ # However, 'strip' requires both read and write access to temps.
+ case $mode in
+ # Optimize common cases.
+ *644) cp_umask=133;;
+ *755) cp_umask=22;;
+
+ *[0-7])
+ if test -z "$stripcmd"; then
+ u_plus_rw=
+ else
+ u_plus_rw='% 200'
+ fi
+ cp_umask=`expr '(' 777 - $mode % 1000 ')' $u_plus_rw`;;
+ *)
+ if test -z "$stripcmd"; then
+ u_plus_rw=
+ else
+ u_plus_rw=,u+rw
+ fi
+ cp_umask=$mode$u_plus_rw;;
+ esac
+fi
+
+for src
+do
+ # Protect names starting with `-'.
+ case $src in
+ -*) src=./$src;;
+ esac
+
+ if test -n "$dir_arg"; then
+ dst=$src
+ dstdir=$dst
+ test -d "$dstdir"
+ dstdir_status=$?
+ else
+
+ # Waiting for this to be detected by the "$cpprog $src $dsttmp" command
+ # might cause directories to be created, which would be especially bad
+ # if $src (and thus $dsttmp) contains '*'.
+ if test ! -f "$src" && test ! -d "$src"; then
+ echo "$0: $src does not exist." >&2
+ exit 1
+ fi
+
+ if test -z "$dst_arg"; then
+ echo "$0: no destination specified." >&2
+ exit 1
+ fi
+
+ dst=$dst_arg
+ # Protect names starting with `-'.
+ case $dst in
+ -*) dst=./$dst;;
+ esac
+
+ # If destination is a directory, append the input filename; won't work
+ # if double slashes aren't ignored.
+ if test -d "$dst"; then
+ if test -n "$no_target_directory"; then
+ echo "$0: $dst_arg: Is a directory" >&2
+ exit 1
+ fi
+ dstdir=$dst
+ dst=$dstdir/`basename "$src"`
+ dstdir_status=0
+ else
+ # Prefer dirname, but fall back on a substitute if dirname fails.
+ dstdir=`
+ (dirname "$dst") 2>/dev/null ||
+ expr X"$dst" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+ X"$dst" : 'X\(//\)[^/]' \| \
+ X"$dst" : 'X\(//\)$' \| \
+ X"$dst" : 'X\(/\)' \| . 2>/dev/null ||
+ echo X"$dst" |
+ sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+ s//\1/
+ q
+ }
+ /^X\(\/\/\)[^/].*/{
+ s//\1/
+ q
+ }
+ /^X\(\/\/\)$/{
+ s//\1/
+ q
+ }
+ /^X\(\/\).*/{
+ s//\1/
+ q
+ }
+ s/.*/./; q'
+ `
+
+ test -d "$dstdir"
+ dstdir_status=$?
+ fi
+ fi
+
+ obsolete_mkdir_used=false
+
+ if test $dstdir_status != 0; then
+ case $posix_mkdir in
+ '')
+ # Create intermediate dirs using mode 755 as modified by the umask.
+ # This is like FreeBSD 'install' as of 1997-10-28.
+ umask=`umask`
+ case $stripcmd.$umask in
+ # Optimize common cases.
+ *[2367][2367]) mkdir_umask=$umask;;
+ .*0[02][02] | .[02][02] | .[02]) mkdir_umask=22;;
+
+ *[0-7])
+ mkdir_umask=`expr $umask + 22 \
+ - $umask % 100 % 40 + $umask % 20 \
+ - $umask % 10 % 4 + $umask % 2
+ `;;
+ *) mkdir_umask=$umask,go-w;;
+ esac
+
+ # With -d, create the new directory with the user-specified mode.
+ # Otherwise, rely on $mkdir_umask.
+ if test -n "$dir_arg"; then
+ mkdir_mode=-m$mode
+ else
+ mkdir_mode=
+ fi
+
+ posix_mkdir=false
+ case $umask in
+ *[123567][0-7][0-7])
+ # POSIX mkdir -p sets u+wx bits regardless of umask, which
+ # is incompatible with FreeBSD 'install' when (umask & 300) != 0.
+ ;;
+ *)
+ tmpdir=${TMPDIR-/tmp}/ins$RANDOM-$$
+ trap 'ret=$?; rmdir "$tmpdir/d" "$tmpdir" 2>/dev/null; exit $ret' 0
+
+ if (umask $mkdir_umask &&
+ exec $mkdirprog $mkdir_mode -p -- "$tmpdir/d") >/dev/null 2>&1
+ then
+ if test -z "$dir_arg" || {
+ # Check for POSIX incompatibilities with -m.
+ # HP-UX 11.23 and IRIX 6.5 mkdir -m -p sets group- or
+ # other-writeable bit of parent directory when it shouldn't.
+ # FreeBSD 6.1 mkdir -m -p sets mode of existing directory.
+ ls_ld_tmpdir=`ls -ld "$tmpdir"`
+ case $ls_ld_tmpdir in
+ d????-?r-*) different_mode=700;;
+ d????-?--*) different_mode=755;;
+ *) false;;
+ esac &&
+ $mkdirprog -m$different_mode -p -- "$tmpdir" && {
+ ls_ld_tmpdir_1=`ls -ld "$tmpdir"`
+ test "$ls_ld_tmpdir" = "$ls_ld_tmpdir_1"
+ }
+ }
+ then posix_mkdir=:
+ fi
+ rmdir "$tmpdir/d" "$tmpdir"
+ else
+ # Remove any dirs left behind by ancient mkdir implementations.
+ rmdir ./$mkdir_mode ./-p ./-- 2>/dev/null
+ fi
+ trap '' 0;;
+ esac;;
+ esac
+
+ if
+ $posix_mkdir && (
+ umask $mkdir_umask &&
+ $doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir"
+ )
+ then :
+ else
+
+ # The umask is ridiculous, or mkdir does not conform to POSIX,
+ # or it failed possibly due to a race condition. Create the
+ # directory the slow way, step by step, checking for races as we go.
+
+ case $dstdir in
+ /*) prefix='/';;
+ -*) prefix='./';;
+ *) prefix='';;
+ esac
+
+ eval "$initialize_posix_glob"
+
+ oIFS=$IFS
+ IFS=/
+ $posix_glob set -f
+ set fnord $dstdir
+ shift
+ $posix_glob set +f
+ IFS=$oIFS
+
+ prefixes=
+
+ for d
+ do
+ test -z "$d" && continue
+
+ prefix=$prefix$d
+ if test -d "$prefix"; then
+ prefixes=
+ else
+ if $posix_mkdir; then
+ (umask=$mkdir_umask &&
+ $doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir") && break
+ # Don't fail if two instances are running concurrently.
+ test -d "$prefix" || exit 1
+ else
+ case $prefix in
+ *\'*) qprefix=`echo "$prefix" | sed "s/'/'\\\\\\\\''/g"`;;
+ *) qprefix=$prefix;;
+ esac
+ prefixes="$prefixes '$qprefix'"
+ fi
+ fi
+ prefix=$prefix/
+ done
+
+ if test -n "$prefixes"; then
+ # Don't fail if two instances are running concurrently.
+ (umask $mkdir_umask &&
+ eval "\$doit_exec \$mkdirprog $prefixes") ||
+ test -d "$dstdir" || exit 1
+ obsolete_mkdir_used=true
+ fi
+ fi
+ fi
+
+ if test -n "$dir_arg"; then
+ { test -z "$chowncmd" || $doit $chowncmd "$dst"; } &&
+ { test -z "$chgrpcmd" || $doit $chgrpcmd "$dst"; } &&
+ { test "$obsolete_mkdir_used$chowncmd$chgrpcmd" = false ||
+ test -z "$chmodcmd" || $doit $chmodcmd $mode "$dst"; } || exit 1
+ else
+
+ # Make a couple of temp file names in the proper directory.
+ dsttmp=$dstdir/_inst.$$_
+ rmtmp=$dstdir/_rm.$$_
+
+ # Trap to clean up those temp files at exit.
+ trap 'ret=$?; rm -f "$dsttmp" "$rmtmp" && exit $ret' 0
+
+ # Copy the file name to the temp name.
+ (umask $cp_umask && $doit_exec $cpprog "$src" "$dsttmp") &&
+
+ # and set any options; do chmod last to preserve setuid bits.
+ #
+ # If any of these fail, we abort the whole thing. If we want to
+ # ignore errors from any of these, just make sure not to ignore
+ # errors from the above "$doit $cpprog $src $dsttmp" command.
+ #
+ { test -z "$chowncmd" || $doit $chowncmd "$dsttmp"; } &&
+ { test -z "$chgrpcmd" || $doit $chgrpcmd "$dsttmp"; } &&
+ { test -z "$stripcmd" || $doit $stripcmd "$dsttmp"; } &&
+ { test -z "$chmodcmd" || $doit $chmodcmd $mode "$dsttmp"; } &&
+
+ # If -C, don't bother to copy if it wouldn't change the file.
+ if $copy_on_change &&
+ old=`LC_ALL=C ls -dlL "$dst" 2>/dev/null` &&
+ new=`LC_ALL=C ls -dlL "$dsttmp" 2>/dev/null` &&
+
+ eval "$initialize_posix_glob" &&
+ $posix_glob set -f &&
+ set X $old && old=:$2:$4:$5:$6 &&
+ set X $new && new=:$2:$4:$5:$6 &&
+ $posix_glob set +f &&
+
+ test "$old" = "$new" &&
+ $cmpprog "$dst" "$dsttmp" >/dev/null 2>&1
+ then
+ rm -f "$dsttmp"
+ else
+ # Rename the file to the real destination.
+ $doit $mvcmd -f "$dsttmp" "$dst" 2>/dev/null ||
+
+ # The rename failed, perhaps because mv can't rename something else
+ # to itself, or perhaps because mv is so ancient that it does not
+ # support -f.
+ {
+ # Now remove or move aside any old file at destination location.
+ # We try this two ways since rm can't unlink itself on some
+ # systems and the destination file might be busy for other
+ # reasons. In this case, the final cleanup might fail but the new
+ # file should still install successfully.
+ {
+ test ! -f "$dst" ||
+ $doit $rmcmd -f "$dst" 2>/dev/null ||
+ { $doit $mvcmd -f "$dst" "$rmtmp" 2>/dev/null &&
+ { $doit $rmcmd -f "$rmtmp" 2>/dev/null; :; }
+ } ||
+ { echo "$0: cannot unlink or rename $dst" >&2
+ (exit 1); exit 1
+ }
+ } &&
+
+ # Now rename the file to the real destination.
+ $doit $mvcmd "$dsttmp" "$dst"
+ }
+ fi || exit 1
+
+ trap '' 0
+ fi
+done
+
+# Local variables:
+# eval: (add-hook 'write-file-hooks 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-time-zone: "UTC"
+# time-stamp-end: "; # UTC"
+# End:
diff --git a/src/3rdparty/libpng/libpng-1.4.0.txt b/src/3rdparty/libpng/libpng-1.4.0.txt
new file mode 100644
index 0000000..3da0aa8
--- /dev/null
+++ b/src/3rdparty/libpng/libpng-1.4.0.txt
@@ -0,0 +1,3277 @@
+libpng.txt - A description on how to use and modify libpng
+
+ libpng version 1.4.0 - January 3, 2010
+ Updated and distributed by Glenn Randers-Pehrson
+ <glennrp at users.sourceforge.net>
+ Copyright (c) 1998-2009 Glenn Randers-Pehrson
+
+ This document is released under the libpng license.
+ For conditions of distribution and use, see the disclaimer
+ and license in png.h
+
+ Based on:
+
+ libpng versions 0.97, January 1998, through 1.4.0 - January 3, 2010
+ Updated and distributed by Glenn Randers-Pehrson
+ Copyright (c) 1998-2009 Glenn Randers-Pehrson
+
+ libpng 1.0 beta 6 version 0.96 May 28, 1997
+ Updated and distributed by Andreas Dilger
+ Copyright (c) 1996, 1997 Andreas Dilger
+
+ libpng 1.0 beta 2 - version 0.88 January 26, 1996
+ For conditions of distribution and use, see copyright
+ notice in png.h. Copyright (c) 1995, 1996 Guy Eric
+ Schalnat, Group 42, Inc.
+
+ Updated/rewritten per request in the libpng FAQ
+ Copyright (c) 1995, 1996 Frank J. T. Wojcik
+ December 18, 1995 & January 20, 1996
+
+I. Introduction
+
+This file describes how to use and modify the PNG reference library
+(known as libpng) for your own use. There are five sections to this
+file: introduction, structures, reading, writing, and modification and
+configuration notes for various special platforms. In addition to this
+file, example.c is a good starting point for using the library, as
+it is heavily commented and should include everything most people
+will need. We assume that libpng is already installed; see the
+INSTALL file for instructions on how to install libpng.
+
+For examples of libpng usage, see the files "example.c", "pngtest.c",
+and the files in the "contrib" directory, all of which are included in
+the libpng distribution.
+
+Libpng was written as a companion to the PNG specification, as a way
+of reducing the amount of time and effort it takes to support the PNG
+file format in application programs.
+
+The PNG specification (second edition), November 2003, is available as
+a W3C Recommendation and as an ISO Standard (ISO/IEC 15948:2003 (E)) at
+<http://www.w3.org/TR/2003/REC-PNG-20031110/
+The W3C and ISO documents have identical technical content.
+
+The PNG-1.2 specification is available at
+<http://www.libpng.org/pub/png/documents/>. It is technically equivalent
+to the PNG specification (second edition) but has some additional material.
+
+The PNG-1.0 specification is available
+as RFC 2083 <http://www.libpng.org/pub/png/documents/> and as a
+W3C Recommendation <http://www.w3.org/TR/REC.png.html>.
+
+Some additional chunks are described in the special-purpose public chunks
+documents at <http://www.libpng.org/pub/png/documents/>.
+
+Other information
+about PNG, and the latest version of libpng, can be found at the PNG home
+page, <http://www.libpng.org/pub/png/>.
+
+Most users will not have to modify the library significantly; advanced
+users may want to modify it more. All attempts were made to make it as
+complete as possible, while keeping the code easy to understand.
+Currently, this library only supports C. Support for other languages
+is being considered.
+
+Libpng has been designed to handle multiple sessions at one time,
+to be easily modifiable, to be portable to the vast majority of
+machines (ANSI, K&R, 16-, 32-, and 64-bit) available, and to be easy
+to use. The ultimate goal of libpng is to promote the acceptance of
+the PNG file format in whatever way possible. While there is still
+work to be done (see the TODO file), libpng should cover the
+majority of the needs of its users.
+
+Libpng uses zlib for its compression and decompression of PNG files.
+Further information about zlib, and the latest version of zlib, can
+be found at the zlib home page, <http://www.info-zip.org/pub/infozip/zlib/>.
+The zlib compression utility is a general purpose utility that is
+useful for more than PNG files, and can be used without libpng.
+See the documentation delivered with zlib for more details.
+You can usually find the source files for the zlib utility wherever you
+find the libpng source files.
+
+Libpng is thread safe, provided the threads are using different
+instances of the structures. Each thread should have its own
+png_struct and png_info instances, and thus its own image.
+Libpng does not protect itself against two threads using the
+same instance of a structure.
+
+II. Structures
+
+There are two main structures that are important to libpng, png_struct
+and png_info. The first, png_struct, is an internal structure that
+will not, for the most part, be used by a user except as the first
+variable passed to every libpng function call.
+
+The png_info structure is designed to provide information about the
+PNG file. At one time, the fields of png_info were intended to be
+directly accessible to the user. However, this tended to cause problems
+with applications using dynamically loaded libraries, and as a result
+a set of interface functions for png_info (the png_get_*() and png_set_*()
+functions) was developed. The fields of png_info are still available for
+older applications, but it is suggested that applications use the new
+interfaces if at all possible.
+
+Applications that do make direct access to the members of png_struct (except
+for png_ptr->jmpbuf) must be recompiled whenever the library is updated,
+and applications that make direct access to the members of png_info must
+be recompiled if they were compiled or loaded with libpng version 1.0.6,
+in which the members were in a different order. In version 1.0.7, the
+members of the png_info structure reverted to the old order, as they were
+in versions 0.97c through 1.0.5. Starting with version 2.0.0, both
+structures are going to be hidden, and the contents of the structures will
+only be accessible through the png_get/png_set functions.
+
+The png.h header file is an invaluable reference for programming with libpng.
+And while I'm on the topic, make sure you include the libpng header file:
+
+#include <png.h>
+
+III. Reading
+
+We'll now walk you through the possible functions to call when reading
+in a PNG file sequentially, briefly explaining the syntax and purpose
+of each one. See example.c and png.h for more detail. While
+progressive reading is covered in the next section, you will still
+need some of the functions discussed in this section to read a PNG
+file.
+
+Setup
+
+You will want to do the I/O initialization(*) before you get into libpng,
+so if it doesn't work, you don't have much to undo. Of course, you
+will also want to insure that you are, in fact, dealing with a PNG
+file. Libpng provides a simple check to see if a file is a PNG file.
+To use it, pass in the first 1 to 8 bytes of the file to the function
+png_sig_cmp(), and it will return 0 (false) if the bytes match the
+corresponding bytes of the PNG signature, or nonzero (true) otherwise.
+Of course, the more bytes you pass in, the greater the accuracy of the
+prediction.
+
+If you are intending to keep the file pointer open for use in libpng,
+you must ensure you don't read more than 8 bytes from the beginning
+of the file, and you also have to make a call to png_set_sig_bytes_read()
+with the number of bytes you read from the beginning. Libpng will
+then only check the bytes (if any) that your program didn't read.
+
+(*): If you are not using the standard I/O functions, you will need
+to replace them with custom functions. See the discussion under
+Customizing libpng.
+
+
+ FILE *fp = fopen(file_name, "rb");
+ if (!fp)
+ {
+ return (ERROR);
+ }
+ fread(header, 1, number, fp);
+ is_png = !png_sig_cmp(header, 0, number);
+ if (!is_png)
+ {
+ return (NOT_PNG);
+ }
+
+
+Next, png_struct and png_info need to be allocated and initialized. In
+order to ensure that the size of these structures is correct even with a
+dynamically linked libpng, there are functions to initialize and
+allocate the structures. We also pass the library version, optional
+pointers to error handling functions, and a pointer to a data struct for
+use by the error functions, if necessary (the pointer and functions can
+be NULL if the default error handlers are to be used). See the section
+on Changes to Libpng below regarding the old initialization functions.
+The structure allocation functions quietly return NULL if they fail to
+create the structure, so your application should check for that.
+
+ png_structp png_ptr = png_create_read_struct
+ (PNG_LIBPNG_VER_STRING, (png_voidp)user_error_ptr,
+ user_error_fn, user_warning_fn);
+ if (!png_ptr)
+ return (ERROR);
+
+ png_infop info_ptr = png_create_info_struct(png_ptr);
+ if (!info_ptr)
+ {
+ png_destroy_read_struct(&png_ptr,
+ (png_infopp)NULL, (png_infopp)NULL);
+ return (ERROR);
+ }
+
+ png_infop end_info = png_create_info_struct(png_ptr);
+ if (!end_info)
+ {
+ png_destroy_read_struct(&png_ptr, &info_ptr,
+ (png_infopp)NULL);
+ return (ERROR);
+ }
+
+If you want to use your own memory allocation routines,
+define PNG_USER_MEM_SUPPORTED and use
+png_create_read_struct_2() instead of png_create_read_struct():
+
+ png_structp png_ptr = png_create_read_struct_2
+ (PNG_LIBPNG_VER_STRING, (png_voidp)user_error_ptr,
+ user_error_fn, user_warning_fn, (png_voidp)
+ user_mem_ptr, user_malloc_fn, user_free_fn);
+
+The error handling routines passed to png_create_read_struct()
+and the memory alloc/free routines passed to png_create_struct_2()
+are only necessary if you are not using the libpng supplied error
+handling and memory alloc/free functions.
+
+When libpng encounters an error, it expects to longjmp back
+to your routine. Therefore, you will need to call setjmp and pass
+your png_jmpbuf(png_ptr). If you read the file from different
+routines, you will need to update the jmpbuf field every time you enter
+a new routine that will call a png_*() function.
+
+See your documentation of setjmp/longjmp for your compiler for more
+information on setjmp/longjmp. See the discussion on libpng error
+handling in the Customizing Libpng section below for more information
+on the libpng error handling. If an error occurs, and libpng longjmp's
+back to your setjmp, you will want to call png_destroy_read_struct() to
+free any memory.
+
+ if (setjmp(png_jmpbuf(png_ptr)))
+ {
+ png_destroy_read_struct(&png_ptr, &info_ptr,
+ &end_info);
+ fclose(fp);
+ return (ERROR);
+ }
+
+If you would rather avoid the complexity of setjmp/longjmp issues,
+you can compile libpng with PNG_SETJMP_NOT_SUPPORTED, in which case
+errors will result in a call to PNG_ABORT() which defaults to abort().
+
+Now you need to set up the input code. The default for libpng is to
+use the C function fread(). If you use this, you will need to pass a
+valid FILE * in the function png_init_io(). Be sure that the file is
+opened in binary mode. If you wish to handle reading data in another
+way, you need not call the png_init_io() function, but you must then
+implement the libpng I/O methods discussed in the Customizing Libpng
+section below.
+
+ png_init_io(png_ptr, fp);
+
+If you had previously opened the file and read any of the signature from
+the beginning in order to see if this was a PNG file, you need to let
+libpng know that there are some bytes missing from the start of the file.
+
+ png_set_sig_bytes(png_ptr, number);
+
+Setting up callback code
+
+You can set up a callback function to handle any unknown chunks in the
+input stream. You must supply the function
+
+ read_chunk_callback(png_ptr ptr,
+ png_unknown_chunkp chunk);
+ {
+ /* The unknown chunk structure contains your
+ chunk data, along with similar data for any other
+ unknown chunks: */
+
+ png_byte name[5];
+ png_byte *data;
+ png_size_t size;
+
+ /* Note that libpng has already taken care of
+ the CRC handling */
+
+ /* put your code here. Search for your chunk in the
+ unknown chunk structure, process it, and return one
+ of the following: */
+
+ return (-n); /* chunk had an error */
+ return (0); /* did not recognize */
+ return (n); /* success */
+ }
+
+(You can give your function another name that you like instead of
+"read_chunk_callback")
+
+To inform libpng about your function, use
+
+ png_set_read_user_chunk_fn(png_ptr, user_chunk_ptr,
+ read_chunk_callback);
+
+This names not only the callback function, but also a user pointer that
+you can retrieve with
+
+ png_get_user_chunk_ptr(png_ptr);
+
+If you call the png_set_read_user_chunk_fn() function, then all unknown
+chunks will be saved when read, in case your callback function will need
+one or more of them. This behavior can be changed with the
+png_set_keep_unknown_chunks() function, described below.
+
+At this point, you can set up a callback function that will be
+called after each row has been read, which you can use to control
+a progress meter or the like. It's demonstrated in pngtest.c.
+You must supply a function
+
+ void read_row_callback(png_ptr ptr, png_uint_32 row,
+ int pass);
+ {
+ /* put your code here */
+ }
+
+(You can give it another name that you like instead of "read_row_callback")
+
+To inform libpng about your function, use
+
+ png_set_read_status_fn(png_ptr, read_row_callback);
+
+Unknown-chunk handling
+
+Now you get to set the way the library processes unknown chunks in the
+input PNG stream. Both known and unknown chunks will be read. Normal
+behavior is that known chunks will be parsed into information in
+various info_ptr members while unknown chunks will be discarded. This
+behavior can be wasteful if your application will never use some known
+chunk types. To change this, you can call:
+
+ png_set_keep_unknown_chunks(png_ptr, keep,
+ chunk_list, num_chunks);
+ keep - 0: default unknown chunk handling
+ 1: ignore; do not keep
+ 2: keep only if safe-to-copy
+ 3: keep even if unsafe-to-copy
+ You can use these definitions:
+ PNG_HANDLE_CHUNK_AS_DEFAULT 0
+ PNG_HANDLE_CHUNK_NEVER 1
+ PNG_HANDLE_CHUNK_IF_SAFE 2
+ PNG_HANDLE_CHUNK_ALWAYS 3
+ chunk_list - list of chunks affected (a byte string,
+ five bytes per chunk, NULL or '\0' if
+ num_chunks is 0)
+ num_chunks - number of chunks affected; if 0, all
+ unknown chunks are affected. If nonzero,
+ only the chunks in the list are affected
+
+Unknown chunks declared in this way will be saved as raw data onto a
+list of png_unknown_chunk structures. If a chunk that is normally
+known to libpng is named in the list, it will be handled as unknown,
+according to the "keep" directive. If a chunk is named in successive
+instances of png_set_keep_unknown_chunks(), the final instance will
+take precedence. The IHDR and IEND chunks should not be named in
+chunk_list; if they are, libpng will process them normally anyway.
+
+Here is an example of the usage of png_set_keep_unknown_chunks(),
+where the private "vpAg" chunk will later be processed by a user chunk
+callback function:
+
+ png_byte vpAg[5]={118, 112, 65, 103, (png_byte) '\0'};
+
+ #if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
+ png_byte unused_chunks[]=
+ {
+ 104, 73, 83, 84, (png_byte) '\0', /* hIST */
+ 105, 84, 88, 116, (png_byte) '\0', /* iTXt */
+ 112, 67, 65, 76, (png_byte) '\0', /* pCAL */
+ 115, 67, 65, 76, (png_byte) '\0', /* sCAL */
+ 115, 80, 76, 84, (png_byte) '\0', /* sPLT */
+ 116, 73, 77, 69, (png_byte) '\0', /* tIME */
+ };
+ #endif
+
+ ...
+
+ #if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
+ /* ignore all unknown chunks: */
+ png_set_keep_unknown_chunks(read_ptr, 1, NULL, 0);
+ /* except for vpAg: */
+ png_set_keep_unknown_chunks(read_ptr, 2, vpAg, 1);
+ /* also ignore unused known chunks: */
+ png_set_keep_unknown_chunks(read_ptr, 1, unused_chunks,
+ (int)sizeof(unused_chunks)/5);
+ #endif
+
+User limits
+
+The PNG specification allows the width and height of an image to be as
+large as 2^31-1 (0x7fffffff), or about 2.147 billion rows and columns.
+Since very few applications really need to process such large images,
+we have imposed an arbitrary 1-million limit on rows and columns.
+Larger images will be rejected immediately with a png_error() call. If
+you wish to override this limit, you can use
+
+ png_set_user_limits(png_ptr, width_max, height_max);
+
+to set your own limits, or use width_max = height_max = 0x7fffffffL
+to allow all valid dimensions (libpng may reject some very large images
+anyway because of potential buffer overflow conditions).
+
+You should put this statement after you create the PNG structure and
+before calling png_read_info(), png_read_png(), or png_process_data().
+If you need to retrieve the limits that are being applied, use
+
+ width_max = png_get_user_width_max(png_ptr);
+ height_max = png_get_user_height_max(png_ptr);
+
+The PNG specification sets no limit on the number of ancillary chunks
+allowed in a PNG datastream. You can impose a limit on the total number
+of sPLT, tEXt, iTXt, zTXt, and unknown chunks that will be stored, with
+
+ png_set_chunk_cache_max(png_ptr, user_chunk_cache_max);
+
+where 0x7fffffffL means unlimited. You can retrieve this limit with
+
+ chunk_cache_max = png_get_chunk_cache_max(png_ptr);
+
+This limit also applies to the number of buffers that can be allocated
+by png_decompress_chunk() while decompressing iTXt, zTXt, and iCCP chunks.
+
+The high-level read interface
+
+At this point there are two ways to proceed; through the high-level
+read interface, or through a sequence of low-level read operations.
+You can use the high-level interface if (a) you are willing to read
+the entire image into memory, and (b) the input transformations
+you want to do are limited to the following set:
+
+ PNG_TRANSFORM_IDENTITY No transformation
+ PNG_TRANSFORM_STRIP_16 Strip 16-bit samples to
+ 8 bits
+ PNG_TRANSFORM_STRIP_ALPHA Discard the alpha channel
+ PNG_TRANSFORM_PACKING Expand 1, 2 and 4-bit
+ samples to bytes
+ PNG_TRANSFORM_PACKSWAP Change order of packed
+ pixels to LSB first
+ PNG_TRANSFORM_EXPAND Perform set_expand()
+ PNG_TRANSFORM_INVERT_MONO Invert monochrome images
+ PNG_TRANSFORM_SHIFT Normalize pixels to the
+ sBIT depth
+ PNG_TRANSFORM_BGR Flip RGB to BGR, RGBA
+ to BGRA
+ PNG_TRANSFORM_SWAP_ALPHA Flip RGBA to ARGB or GA
+ to AG
+ PNG_TRANSFORM_INVERT_ALPHA Change alpha from opacity
+ to transparency
+ PNG_TRANSFORM_SWAP_ENDIAN Byte-swap 16-bit samples
+ PNG_TRANSFORM_GRAY_TO_RGB Expand grayscale samples
+ to RGB (or GA to RGBA)
+
+(This excludes setting a background color, doing gamma transformation,
+dithering, and setting filler.) If this is the case, simply do this:
+
+ png_read_png(png_ptr, info_ptr, png_transforms, NULL)
+
+where png_transforms is an integer containing the bitwise OR of some
+set of transformation flags. This call is equivalent to png_read_info(),
+followed the set of transformations indicated by the transform mask,
+then png_read_image(), and finally png_read_end().
+
+(The final parameter of this call is not yet used. Someday it might point
+to transformation parameters required by some future input transform.)
+
+You must use png_transforms and not call any png_set_transform() functions
+when you use png_read_png().
+
+After you have called png_read_png(), you can retrieve the image data
+with
+
+ row_pointers = png_get_rows(png_ptr, info_ptr);
+
+where row_pointers is an array of pointers to the pixel data for each row:
+
+ png_bytep row_pointers[height];
+
+If you know your image size and pixel size ahead of time, you can allocate
+row_pointers prior to calling png_read_png() with
+
+ if (height > PNG_UINT_32_MAX/png_sizeof(png_byte))
+ png_error (png_ptr,
+ "Image is too tall to process in memory");
+ if (width > PNG_UINT_32_MAX/pixel_size)
+ png_error (png_ptr,
+ "Image is too wide to process in memory");
+ row_pointers = png_malloc(png_ptr,
+ height*png_sizeof(png_bytep));
+ for (int i=0; i<height, i++)
+ row_pointers[i]=NULL; /* security precaution */
+ for (int i=0; i<height, i++)
+ row_pointers[i]=png_malloc(png_ptr,
+ width*pixel_size);
+ png_set_rows(png_ptr, info_ptr, &row_pointers);
+
+Alternatively you could allocate your image in one big block and define
+row_pointers[i] to point into the proper places in your block.
+
+If you use png_set_rows(), the application is responsible for freeing
+row_pointers (and row_pointers[i], if they were separately allocated).
+
+If you don't allocate row_pointers ahead of time, png_read_png() will
+do it, and it'll be free'ed when you call png_destroy_*().
+
+The low-level read interface
+
+If you are going the low-level route, you are now ready to read all
+the file information up to the actual image data. You do this with a
+call to png_read_info().
+
+ png_read_info(png_ptr, info_ptr);
+
+This will process all chunks up to but not including the image data.
+
+Querying the info structure
+
+Functions are used to get the information from the info_ptr once it
+has been read. Note that these fields may not be completely filled
+in until png_read_end() has read the chunk data following the image.
+
+ png_get_IHDR(png_ptr, info_ptr, &width, &height,
+ &bit_depth, &color_type, &interlace_type,
+ &compression_type, &filter_method);
+
+ width - holds the width of the image
+ in pixels (up to 2^31).
+ height - holds the height of the image
+ in pixels (up to 2^31).
+ bit_depth - holds the bit depth of one of the
+ image channels. (valid values are
+ 1, 2, 4, 8, 16 and depend also on
+ the color_type. See also
+ significant bits (sBIT) below).
+ color_type - describes which color/alpha channels
+ are present.
+ PNG_COLOR_TYPE_GRAY
+ (bit depths 1, 2, 4, 8, 16)
+ PNG_COLOR_TYPE_GRAY_ALPHA
+ (bit depths 8, 16)
+ PNG_COLOR_TYPE_PALETTE
+ (bit depths 1, 2, 4, 8)
+ PNG_COLOR_TYPE_RGB
+ (bit_depths 8, 16)
+ PNG_COLOR_TYPE_RGB_ALPHA
+ (bit_depths 8, 16)
+
+ PNG_COLOR_MASK_PALETTE
+ PNG_COLOR_MASK_COLOR
+ PNG_COLOR_MASK_ALPHA
+
+ filter_method - (must be PNG_FILTER_TYPE_BASE
+ for PNG 1.0, and can also be
+ PNG_INTRAPIXEL_DIFFERENCING if
+ the PNG datastream is embedded in
+ a MNG-1.0 datastream)
+ compression_type - (must be PNG_COMPRESSION_TYPE_BASE
+ for PNG 1.0)
+ interlace_type - (PNG_INTERLACE_NONE or
+ PNG_INTERLACE_ADAM7)
+
+ Any or all of interlace_type, compression_type, or
+ filter_method can be NULL if you are
+ not interested in their values.
+
+ Note that png_get_IHDR() returns 32-bit data into
+ the application's width and height variables.
+ This is an unsafe situation if these are 16-bit
+ variables. In such situations, the
+ png_get_image_width() and png_get_image_height()
+ functions described below are safer.
+
+ width = png_get_image_width(png_ptr,
+ info_ptr);
+ height = png_get_image_height(png_ptr,
+ info_ptr);
+ bit_depth = png_get_bit_depth(png_ptr,
+ info_ptr);
+ color_type = png_get_color_type(png_ptr,
+ info_ptr);
+ filter_method = png_get_filter_type(png_ptr,
+ info_ptr);
+ compression_type = png_get_compression_type(png_ptr,
+ info_ptr);
+ interlace_type = png_get_interlace_type(png_ptr,
+ info_ptr);
+
+ channels = png_get_channels(png_ptr, info_ptr);
+ channels - number of channels of info for the
+ color type (valid values are 1 (GRAY,
+ PALETTE), 2 (GRAY_ALPHA), 3 (RGB),
+ 4 (RGB_ALPHA or RGB + filler byte))
+ rowbytes = png_get_rowbytes(png_ptr, info_ptr);
+ rowbytes - number of bytes needed to hold a row
+
+ signature = png_get_signature(png_ptr, info_ptr);
+ signature - holds the signature read from the
+ file (if any). The data is kept in
+ the same offset it would be if the
+ whole signature were read (i.e. if an
+ application had already read in 4
+ bytes of signature before starting
+ libpng, the remaining 4 bytes would
+ be in signature[4] through signature[7]
+ (see png_set_sig_bytes())).
+
+These are also important, but their validity depends on whether the chunk
+has been read. The png_get_valid(png_ptr, info_ptr, PNG_INFO_<chunk>) and
+png_get_<chunk>(png_ptr, info_ptr, ...) functions return non-zero if the
+data has been read, or zero if it is missing. The parameters to the
+png_get_<chunk> are set directly if they are simple data types, or a
+pointer into the info_ptr is returned for any complex types.
+
+ png_get_PLTE(png_ptr, info_ptr, &palette,
+ &num_palette);
+ palette - the palette for the file
+ (array of png_color)
+ num_palette - number of entries in the palette
+
+ png_get_gAMA(png_ptr, info_ptr, &gamma);
+ gamma - the gamma the file is written
+ at (PNG_INFO_gAMA)
+
+ png_get_sRGB(png_ptr, info_ptr, &srgb_intent);
+ srgb_intent - the rendering intent (PNG_INFO_sRGB)
+ The presence of the sRGB chunk
+ means that the pixel data is in the
+ sRGB color space. This chunk also
+ implies specific values of gAMA and
+ cHRM.
+
+ png_get_iCCP(png_ptr, info_ptr, &name,
+ &compression_type, &profile, &proflen);
+ name - The profile name.
+ compression - The compression type; always
+ PNG_COMPRESSION_TYPE_BASE for PNG 1.0.
+ You may give NULL to this argument to
+ ignore it.
+ profile - International Color Consortium color
+ profile data. May contain NULs.
+ proflen - length of profile data in bytes.
+
+ png_get_sBIT(png_ptr, info_ptr, &sig_bit);
+ sig_bit - the number of significant bits for
+ (PNG_INFO_sBIT) each of the gray,
+ red, green, and blue channels,
+ whichever are appropriate for the
+ given color type (png_color_16)
+
+ png_get_tRNS(png_ptr, info_ptr, &trans_alpha,
+ &num_trans, &trans_color);
+ trans_alpha - array of alpha (transparency)
+ entries for palette (PNG_INFO_tRNS)
+ trans_color - graylevel or color sample values of
+ the single transparent color for
+ non-paletted images (PNG_INFO_tRNS)
+ num_trans - number of transparent entries
+ (PNG_INFO_tRNS)
+
+ png_get_hIST(png_ptr, info_ptr, &hist);
+ (PNG_INFO_hIST)
+ hist - histogram of palette (array of
+ png_uint_16)
+
+ png_get_tIME(png_ptr, info_ptr, &mod_time);
+ mod_time - time image was last modified
+ (PNG_VALID_tIME)
+
+ png_get_bKGD(png_ptr, info_ptr, &background);
+ background - background color (PNG_VALID_bKGD)
+ valid 16-bit red, green and blue
+ values, regardless of color_type
+
+ num_comments = png_get_text(png_ptr, info_ptr,
+ &text_ptr, &num_text);
+ num_comments - number of comments
+ text_ptr - array of png_text holding image
+ comments
+ text_ptr[i].compression - type of compression used
+ on "text" PNG_TEXT_COMPRESSION_NONE
+ PNG_TEXT_COMPRESSION_zTXt
+ PNG_ITXT_COMPRESSION_NONE
+ PNG_ITXT_COMPRESSION_zTXt
+ text_ptr[i].key - keyword for comment. Must contain
+ 1-79 characters.
+ text_ptr[i].text - text comments for current
+ keyword. Can be empty.
+ text_ptr[i].text_length - length of text string,
+ after decompression, 0 for iTXt
+ text_ptr[i].itxt_length - length of itxt string,
+ after decompression, 0 for tEXt/zTXt
+ text_ptr[i].lang - language of comment (empty
+ string for unknown).
+ text_ptr[i].lang_key - keyword in UTF-8
+ (empty string for unknown).
+ Note that the itxt_length, lang, and lang_key
+ members of the text_ptr structure only exist
+ when the library is built with iTXt chunk support.
+
+ num_text - number of comments (same as
+ num_comments; you can put NULL here
+ to avoid the duplication)
+ Note while png_set_text() will accept text, language,
+ and translated keywords that can be NULL pointers, the
+ structure returned by png_get_text will always contain
+ regular zero-terminated C strings. They might be
+ empty strings but they will never be NULL pointers.
+
+ num_spalettes = png_get_sPLT(png_ptr, info_ptr,
+ &palette_ptr);
+ palette_ptr - array of palette structures holding
+ contents of one or more sPLT chunks
+ read.
+ num_spalettes - number of sPLT chunks read.
+
+ png_get_oFFs(png_ptr, info_ptr, &offset_x, &offset_y,
+ &unit_type);
+ offset_x - positive offset from the left edge
+ of the screen
+ offset_y - positive offset from the top edge
+ of the screen
+ unit_type - PNG_OFFSET_PIXEL, PNG_OFFSET_MICROMETER
+
+ png_get_pHYs(png_ptr, info_ptr, &res_x, &res_y,
+ &unit_type);
+ res_x - pixels/unit physical resolution in
+ x direction
+ res_y - pixels/unit physical resolution in
+ x direction
+ unit_type - PNG_RESOLUTION_UNKNOWN,
+ PNG_RESOLUTION_METER
+
+ png_get_sCAL(png_ptr, info_ptr, &unit, &width,
+ &height)
+ unit - physical scale units (an integer)
+ width - width of a pixel in physical scale units
+ height - height of a pixel in physical scale units
+ (width and height are doubles)
+
+ png_get_sCAL_s(png_ptr, info_ptr, &unit, &width,
+ &height)
+ unit - physical scale units (an integer)
+ width - width of a pixel in physical scale units
+ height - height of a pixel in physical scale units
+ (width and height are strings like "2.54")
+
+ num_unknown_chunks = png_get_unknown_chunks(png_ptr,
+ info_ptr, &unknowns)
+ unknowns - array of png_unknown_chunk
+ structures holding unknown chunks
+ unknowns[i].name - name of unknown chunk
+ unknowns[i].data - data of unknown chunk
+ unknowns[i].size - size of unknown chunk's data
+ unknowns[i].location - position of chunk in file
+
+ The value of "i" corresponds to the order in which the
+ chunks were read from the PNG file or inserted with the
+ png_set_unknown_chunks() function.
+
+The data from the pHYs chunk can be retrieved in several convenient
+forms:
+
+ res_x = png_get_x_pixels_per_meter(png_ptr,
+ info_ptr)
+ res_y = png_get_y_pixels_per_meter(png_ptr,
+ info_ptr)
+ res_x_and_y = png_get_pixels_per_meter(png_ptr,
+ info_ptr)
+ res_x = png_get_x_pixels_per_inch(png_ptr,
+ info_ptr)
+ res_y = png_get_y_pixels_per_inch(png_ptr,
+ info_ptr)
+ res_x_and_y = png_get_pixels_per_inch(png_ptr,
+ info_ptr)
+ aspect_ratio = png_get_pixel_aspect_ratio(png_ptr,
+ info_ptr)
+
+ (Each of these returns 0 [signifying "unknown"] if
+ the data is not present or if res_x is 0;
+ res_x_and_y is 0 if res_x != res_y)
+
+The data from the oFFs chunk can be retrieved in several convenient
+forms:
+
+ x_offset = png_get_x_offset_microns(png_ptr, info_ptr);
+ y_offset = png_get_y_offset_microns(png_ptr, info_ptr);
+ x_offset = png_get_x_offset_inches(png_ptr, info_ptr);
+ y_offset = png_get_y_offset_inches(png_ptr, info_ptr);
+
+ (Each of these returns 0 [signifying "unknown" if both
+ x and y are 0] if the data is not present or if the
+ chunk is present but the unit is the pixel)
+
+For more information, see the png_info definition in png.h and the
+PNG specification for chunk contents. Be careful with trusting
+rowbytes, as some of the transformations could increase the space
+needed to hold a row (expand, filler, gray_to_rgb, etc.).
+See png_read_update_info(), below.
+
+A quick word about text_ptr and num_text. PNG stores comments in
+keyword/text pairs, one pair per chunk, with no limit on the number
+of text chunks, and a 2^31 byte limit on their size. While there are
+suggested keywords, there is no requirement to restrict the use to these
+strings. It is strongly suggested that keywords and text be sensible
+to humans (that's the point), so don't use abbreviations. Non-printing
+symbols are not allowed. See the PNG specification for more details.
+There is also no requirement to have text after the keyword.
+
+Keywords should be limited to 79 Latin-1 characters without leading or
+trailing spaces, but non-consecutive spaces are allowed within the
+keyword. It is possible to have the same keyword any number of times.
+The text_ptr is an array of png_text structures, each holding a
+pointer to a language string, a pointer to a keyword and a pointer to
+a text string. The text string, language code, and translated
+keyword may be empty or NULL pointers. The keyword/text
+pairs are put into the array in the order that they are received.
+However, some or all of the text chunks may be after the image, so, to
+make sure you have read all the text chunks, don't mess with these
+until after you read the stuff after the image. This will be
+mentioned again below in the discussion that goes with png_read_end().
+
+Input transformations
+
+After you've read the header information, you can set up the library
+to handle any special transformations of the image data. The various
+ways to transform the data will be described in the order that they
+should occur. This is important, as some of these change the color
+type and/or bit depth of the data, and some others only work on
+certain color types and bit depths. Even though each transformation
+checks to see if it has data that it can do something with, you should
+make sure to only enable a transformation if it will be valid for the
+data. For example, don't swap red and blue on grayscale data.
+
+The colors used for the background and transparency values should be
+supplied in the same format/depth as the current image data. They
+are stored in the same format/depth as the image data in a bKGD or tRNS
+chunk, so this is what libpng expects for this data. The colors are
+transformed to keep in sync with the image data when an application
+calls the png_read_update_info() routine (see below).
+
+Data will be decoded into the supplied row buffers packed into bytes
+unless the library has been told to transform it into another format.
+For example, 4 bit/pixel paletted or grayscale data will be returned
+2 pixels/byte with the leftmost pixel in the high-order bits of the
+byte, unless png_set_packing() is called. 8-bit RGB data will be stored
+in RGB RGB RGB format unless png_set_filler() or png_set_add_alpha()
+is called to insert filler bytes, either before or after each RGB triplet.
+16-bit RGB data will be returned RRGGBB RRGGBB, with the most significant
+byte of the color value first, unless png_set_strip_16() is called to
+transform it to regular RGB RGB triplets, or png_set_filler() or
+png_set_add alpha() is called to insert filler bytes, either before or
+after each RRGGBB triplet. Similarly, 8-bit or 16-bit grayscale data can
+be modified with
+png_set_filler(), png_set_add_alpha(), or png_set_strip_16().
+
+The following code transforms grayscale images of less than 8 to 8 bits,
+changes paletted images to RGB, and adds a full alpha channel if there is
+transparency information in a tRNS chunk. This is most useful on
+grayscale images with bit depths of 2 or 4 or if there is a multiple-image
+viewing application that wishes to treat all images in the same way.
+
+ if (color_type == PNG_COLOR_TYPE_PALETTE)
+ png_set_palette_to_rgb(png_ptr);
+
+ if (color_type == PNG_COLOR_TYPE_GRAY &&
+ bit_depth < 8) png_set_expand_gray_1_2_4_to_8(png_ptr);
+
+ if (png_get_valid(png_ptr, info_ptr,
+ PNG_INFO_tRNS)) png_set_tRNS_to_alpha(png_ptr);
+
+These three functions are actually aliases for png_set_expand(), added
+in libpng version 1.0.4, with the function names expanded to improve code
+readability. In some future version they may actually do different
+things.
+
+As of libpng version 1.2.9, png_set_expand_gray_1_2_4_to_8() was
+added. It expands the sample depth without changing tRNS to alpha.
+
+As of libpng version 1.4.0, not all possible expansions are supported.
+
+In the following table, the 01 means grayscale with depth<8, 31 means
+indexed with depth<8, other numerals represent the color type, "T" means
+the tRNS chunk is present, A means an alpha channel is present, and O
+means tRNS or alpha is present but all pixels in the image are opaque.
+
+ FROM 01 31 0 0T 0O 2 2T 2O 3 3T 3O 4A 4O 6A 6O
+ TO
+ 01 -
+ 31 -
+ 0 1 -
+ 0T -
+ 0O -
+ 2 GX -
+ 2T -
+ 2O -
+ 3 1 -
+ 3T -
+ 3O -
+ 4A T -
+ 4O -
+ 6A GX TX TX -
+ 6O GX TX -
+
+Within the matrix,
+ "-" means the transformation is not supported.
+ "X" means the transformation is obtained by png_set_expand().
+ "1" means the transformation is obtained by
+ png_set_expand_gray_1_2_4_to_8
+ "G" means the transformation is obtained by
+ png_set_gray_to_rgb().
+ "P" means the transformation is obtained by
+ png_set_expand_palette_to_rgb().
+ "T" means the transformation is obtained by
+ png_set_tRNS_to_alpha().
+
+PNG can have files with 16 bits per channel. If you only can handle
+8 bits per channel, this will strip the pixels down to 8 bit.
+
+ if (bit_depth == 16)
+ png_set_strip_16(png_ptr);
+
+If, for some reason, you don't need the alpha channel on an image,
+and you want to remove it rather than combining it with the background
+(but the image author certainly had in mind that you *would* combine
+it with the background, so that's what you should probably do):
+
+ if (color_type & PNG_COLOR_MASK_ALPHA)
+ png_set_strip_alpha(png_ptr);
+
+In PNG files, the alpha channel in an image
+is the level of opacity. If you need the alpha channel in an image to
+be the level of transparency instead of opacity, you can invert the
+alpha channel (or the tRNS chunk data) after it's read, so that 0 is
+fully opaque and 255 (in 8-bit or paletted images) or 65535 (in 16-bit
+images) is fully transparent, with
+
+ png_set_invert_alpha(png_ptr);
+
+PNG files pack pixels of bit depths 1, 2, and 4 into bytes as small as
+they can, resulting in, for example, 8 pixels per byte for 1 bit
+files. This code expands to 1 pixel per byte without changing the
+values of the pixels:
+
+ if (bit_depth < 8)
+ png_set_packing(png_ptr);
+
+PNG files have possible bit depths of 1, 2, 4, 8, and 16. All pixels
+stored in a PNG image have been "scaled" or "shifted" up to the next
+higher possible bit depth (e.g. from 5 bits/sample in the range [0,31]
+to 8 bits/sample in the range [0, 255]). However, it is also possible
+to convert the PNG pixel data back to the original bit depth of the
+image. This call reduces the pixels back down to the original bit depth:
+
+ png_color_8p sig_bit;
+
+ if (png_get_sBIT(png_ptr, info_ptr, &sig_bit))
+ png_set_shift(png_ptr, sig_bit);
+
+PNG files store 3-color pixels in red, green, blue order. This code
+changes the storage of the pixels to blue, green, red:
+
+ if (color_type == PNG_COLOR_TYPE_RGB ||
+ color_type == PNG_COLOR_TYPE_RGB_ALPHA)
+ png_set_bgr(png_ptr);
+
+PNG files store RGB pixels packed into 3 or 6 bytes. This code expands them
+into 4 or 8 bytes for windowing systems that need them in this format:
+
+ if (color_type == PNG_COLOR_TYPE_RGB)
+ png_set_filler(png_ptr, filler, PNG_FILLER_BEFORE);
+
+where "filler" is the 8 or 16-bit number to fill with, and the location is
+either PNG_FILLER_BEFORE or PNG_FILLER_AFTER, depending upon whether
+you want the filler before the RGB or after. This transformation
+does not affect images that already have full alpha channels. To add an
+opaque alpha channel, use filler=0xff or 0xffff and PNG_FILLER_AFTER which
+will generate RGBA pixels.
+
+Note that png_set_filler() does not change the color type. If you want
+to do that, you can add a true alpha channel with
+
+ if (color_type == PNG_COLOR_TYPE_RGB ||
+ color_type == PNG_COLOR_TYPE_GRAY)
+ png_set_add_alpha(png_ptr, filler, PNG_FILLER_AFTER);
+
+where "filler" contains the alpha value to assign to each pixel.
+This function was added in libpng-1.2.7.
+
+If you are reading an image with an alpha channel, and you need the
+data as ARGB instead of the normal PNG format RGBA:
+
+ if (color_type == PNG_COLOR_TYPE_RGB_ALPHA)
+ png_set_swap_alpha(png_ptr);
+
+For some uses, you may want a grayscale image to be represented as
+RGB. This code will do that conversion:
+
+ if (color_type == PNG_COLOR_TYPE_GRAY ||
+ color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
+ png_set_gray_to_rgb(png_ptr);
+
+Conversely, you can convert an RGB or RGBA image to grayscale or grayscale
+with alpha.
+
+ if (color_type == PNG_COLOR_TYPE_RGB ||
+ color_type == PNG_COLOR_TYPE_RGB_ALPHA)
+ png_set_rgb_to_gray_fixed(png_ptr, error_action,
+ int red_weight, int green_weight);
+
+ error_action = 1: silently do the conversion
+ error_action = 2: issue a warning if the original
+ image has any pixel where
+ red != green or red != blue
+ error_action = 3: issue an error and abort the
+ conversion if the original
+ image has any pixel where
+ red != green or red != blue
+
+ red_weight: weight of red component times 100000
+ green_weight: weight of green component times 100000
+ If either weight is negative, default
+ weights (21268, 71514) are used.
+
+If you have set error_action = 1 or 2, you can
+later check whether the image really was gray, after processing
+the image rows, with the png_get_rgb_to_gray_status(png_ptr) function.
+It will return a png_byte that is zero if the image was gray or
+1 if there were any non-gray pixels. bKGD and sBIT data
+will be silently converted to grayscale, using the green channel
+data, regardless of the error_action setting.
+
+With red_weight+green_weight<=100000,
+the normalized graylevel is computed:
+
+ int rw = red_weight * 65536;
+ int gw = green_weight * 65536;
+ int bw = 65536 - (rw + gw);
+ gray = (rw*red + gw*green + bw*blue)/65536;
+
+The default values approximate those recommended in the Charles
+Poynton's Color FAQ, <http://www.inforamp.net/~poynton/>
+Copyright (c) 1998-01-04 Charles Poynton <poynton at inforamp.net>
+
+ Y = 0.212671 * R + 0.715160 * G + 0.072169 * B
+
+Libpng approximates this with
+
+ Y = 0.21268 * R + 0.7151 * G + 0.07217 * B
+
+which can be expressed with integers as
+
+ Y = (6969 * R + 23434 * G + 2365 * B)/32768
+
+The calculation is done in a linear colorspace, if the image gamma
+is known.
+
+If you have a grayscale and you are using png_set_expand_depth(),
+png_set_expand(), or png_set_gray_to_rgb to change to truecolor or to
+a higher bit-depth, you must either supply the background color as a gray
+value at the original file bit-depth (need_expand = 1) or else supply the
+background color as an RGB triplet at the final, expanded bit depth
+(need_expand = 0). Similarly, if you are reading a paletted image, you
+must either supply the background color as a palette index (need_expand = 1)
+or as an RGB triplet that may or may not be in the palette (need_expand = 0).
+
+ png_color_16 my_background;
+ png_color_16p image_background;
+
+ if (png_get_bKGD(png_ptr, info_ptr, &image_background))
+ png_set_background(png_ptr, image_background,
+ PNG_BACKGROUND_GAMMA_FILE, 1, 1.0);
+ else
+ png_set_background(png_ptr, &my_background,
+ PNG_BACKGROUND_GAMMA_SCREEN, 0, 1.0);
+
+The png_set_background() function tells libpng to composite images
+with alpha or simple transparency against the supplied background
+color. If the PNG file contains a bKGD chunk (PNG_INFO_bKGD valid),
+you may use this color, or supply another color more suitable for
+the current display (e.g., the background color from a web page). You
+need to tell libpng whether the color is in the gamma space of the
+display (PNG_BACKGROUND_GAMMA_SCREEN for colors you supply), the file
+(PNG_BACKGROUND_GAMMA_FILE for colors from the bKGD chunk), or one
+that is neither of these gammas (PNG_BACKGROUND_GAMMA_UNIQUE - I don't
+know why anyone would use this, but it's here).
+
+To properly display PNG images on any kind of system, the application needs
+to know what the display gamma is. Ideally, the user will know this, and
+the application will allow them to set it. One method of allowing the user
+to set the display gamma separately for each system is to check for a
+SCREEN_GAMMA or DISPLAY_GAMMA environment variable, which will hopefully be
+correctly set.
+
+Note that display_gamma is the overall gamma correction required to produce
+pleasing results, which depends on the lighting conditions in the surrounding
+environment. In a dim or brightly lit room, no compensation other than
+the physical gamma exponent of the monitor is needed, while in a dark room
+a slightly smaller exponent is better.
+
+ double gamma, screen_gamma;
+
+ if (/* We have a user-defined screen
+ gamma value */)
+ {
+ screen_gamma = user_defined_screen_gamma;
+ }
+ /* One way that applications can share the same
+ screen gamma value */
+ else if ((gamma_str = getenv("SCREEN_GAMMA"))
+ != NULL)
+ {
+ screen_gamma = (double)atof(gamma_str);
+ }
+ /* If we don't have another value */
+ else
+ {
+ screen_gamma = 2.2; /* A good guess for a
+ PC monitor in a bright office or a dim room */
+ screen_gamma = 2.0; /* A good guess for a
+ PC monitor in a dark room */
+ screen_gamma = 1.7 or 1.0; /* A good
+ guess for Mac systems */
+ }
+
+The png_set_gamma() function handles gamma transformations of the data.
+Pass both the file gamma and the current screen_gamma. If the file does
+not have a gamma value, you can pass one anyway if you have an idea what
+it is (usually 0.45455 is a good guess for GIF images on PCs). Note
+that file gammas are inverted from screen gammas. See the discussions
+on gamma in the PNG specification for an excellent description of what
+gamma is, and why all applications should support it. It is strongly
+recommended that PNG viewers support gamma correction.
+
+ if (png_get_gAMA(png_ptr, info_ptr, &gamma))
+ png_set_gamma(png_ptr, screen_gamma, gamma);
+ else
+ png_set_gamma(png_ptr, screen_gamma, 0.45455);
+
+PNG files describe monochrome as black being zero and white being one.
+The following code will reverse this (make black be one and white be
+zero):
+
+ if (bit_depth == 1 && color_type == PNG_COLOR_TYPE_GRAY)
+ png_set_invert_mono(png_ptr);
+
+This function can also be used to invert grayscale and gray-alpha images:
+
+ if (color_type == PNG_COLOR_TYPE_GRAY ||
+ color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
+ png_set_invert_mono(png_ptr);
+
+PNG files store 16 bit pixels in network byte order (big-endian,
+ie. most significant bits first). This code changes the storage to the
+other way (little-endian, i.e. least significant bits first, the
+way PCs store them):
+
+ if (bit_depth == 16)
+ png_set_swap(png_ptr);
+
+If you are using packed-pixel images (1, 2, or 4 bits/pixel), and you
+need to change the order the pixels are packed into bytes, you can use:
+
+ if (bit_depth < 8)
+ png_set_packswap(png_ptr);
+
+Finally, you can write your own transformation function if none of
+the existing ones meets your needs. This is done by setting a callback
+with
+
+ png_set_read_user_transform_fn(png_ptr,
+ read_transform_fn);
+
+You must supply the function
+
+ void read_transform_fn(png_ptr ptr, row_info_ptr
+ row_info, png_bytep data)
+
+See pngtest.c for a working example. Your function will be called
+after all of the other transformations have been processed.
+
+You can also set up a pointer to a user structure for use by your
+callback function, and you can inform libpng that your transform
+function will change the number of channels or bit depth with the
+function
+
+ png_set_user_transform_info(png_ptr, user_ptr,
+ user_depth, user_channels);
+
+The user's application, not libpng, is responsible for allocating and
+freeing any memory required for the user structure.
+
+You can retrieve the pointer via the function
+png_get_user_transform_ptr(). For example:
+
+ voidp read_user_transform_ptr =
+ png_get_user_transform_ptr(png_ptr);
+
+The last thing to handle is interlacing; this is covered in detail below,
+but you must call the function here if you want libpng to handle expansion
+of the interlaced image.
+
+ number_of_passes = png_set_interlace_handling(png_ptr);
+
+After setting the transformations, libpng can update your png_info
+structure to reflect any transformations you've requested with this
+call. This is most useful to update the info structure's rowbytes
+field so you can use it to allocate your image memory. This function
+will also update your palette with the correct screen_gamma and
+background if these have been given with the calls above.
+
+ png_read_update_info(png_ptr, info_ptr);
+
+After you call png_read_update_info(), you can allocate any
+memory you need to hold the image. The row data is simply
+raw byte data for all forms of images. As the actual allocation
+varies among applications, no example will be given. If you
+are allocating one large chunk, you will need to build an
+array of pointers to each row, as it will be needed for some
+of the functions below.
+
+Reading image data
+
+After you've allocated memory, you can read the image data.
+The simplest way to do this is in one function call. If you are
+allocating enough memory to hold the whole image, you can just
+call png_read_image() and libpng will read in all the image data
+and put it in the memory area supplied. You will need to pass in
+an array of pointers to each row.
+
+This function automatically handles interlacing, so you don't need
+to call png_set_interlace_handling() or call this function multiple
+times, or any of that other stuff necessary with png_read_rows().
+
+ png_read_image(png_ptr, row_pointers);
+
+where row_pointers is:
+
+ png_bytep row_pointers[height];
+
+You can point to void or char or whatever you use for pixels.
+
+If you don't want to read in the whole image at once, you can
+use png_read_rows() instead. If there is no interlacing (check
+interlace_type == PNG_INTERLACE_NONE), this is simple:
+
+ png_read_rows(png_ptr, row_pointers, NULL,
+ number_of_rows);
+
+where row_pointers is the same as in the png_read_image() call.
+
+If you are doing this just one row at a time, you can do this with
+a single row_pointer instead of an array of row_pointers:
+
+ png_bytep row_pointer = row;
+ png_read_row(png_ptr, row_pointer, NULL);
+
+If the file is interlaced (interlace_type != 0 in the IHDR chunk), things
+get somewhat harder. The only current (PNG Specification version 1.2)
+interlacing type for PNG is (interlace_type == PNG_INTERLACE_ADAM7)
+is a somewhat complicated 2D interlace scheme, known as Adam7, that
+breaks down an image into seven smaller images of varying size, based
+on an 8x8 grid.
+
+libpng can fill out those images or it can give them to you "as is".
+If you want them filled out, there are two ways to do that. The one
+mentioned in the PNG specification is to expand each pixel to cover
+those pixels that have not been read yet (the "rectangle" method).
+This results in a blocky image for the first pass, which gradually
+smooths out as more pixels are read. The other method is the "sparkle"
+method, where pixels are drawn only in their final locations, with the
+rest of the image remaining whatever colors they were initialized to
+before the start of the read. The first method usually looks better,
+but tends to be slower, as there are more pixels to put in the rows.
+
+If you don't want libpng to handle the interlacing details, just call
+png_read_rows() seven times to read in all seven images. Each of the
+images is a valid image by itself, or they can all be combined on an
+8x8 grid to form a single image (although if you intend to combine them
+you would be far better off using the libpng interlace handling).
+
+The first pass will return an image 1/8 as wide as the entire image
+(every 8th column starting in column 0) and 1/8 as high as the original
+(every 8th row starting in row 0), the second will be 1/8 as wide
+(starting in column 4) and 1/8 as high (also starting in row 0). The
+third pass will be 1/4 as wide (every 4th pixel starting in column 0) and
+1/8 as high (every 8th row starting in row 4), and the fourth pass will
+be 1/4 as wide and 1/4 as high (every 4th column starting in column 2,
+and every 4th row starting in row 0). The fifth pass will return an
+image 1/2 as wide, and 1/4 as high (starting at column 0 and row 2),
+while the sixth pass will be 1/2 as wide and 1/2 as high as the original
+(starting in column 1 and row 0). The seventh and final pass will be as
+wide as the original, and 1/2 as high, containing all of the odd
+numbered scanlines. Phew!
+
+If you want libpng to expand the images, call this before calling
+png_start_read_image() or png_read_update_info():
+
+ if (interlace_type == PNG_INTERLACE_ADAM7)
+ number_of_passes
+ = png_set_interlace_handling(png_ptr);
+
+This will return the number of passes needed. Currently, this
+is seven, but may change if another interlace type is added.
+This function can be called even if the file is not interlaced,
+where it will return one pass.
+
+If you are not going to display the image after each pass, but are
+going to wait until the entire image is read in, use the sparkle
+effect. This effect is faster and the end result of either method
+is exactly the same. If you are planning on displaying the image
+after each pass, the "rectangle" effect is generally considered the
+better looking one.
+
+If you only want the "sparkle" effect, just call png_read_rows() as
+normal, with the third parameter NULL. Make sure you make pass over
+the image number_of_passes times, and you don't change the data in the
+rows between calls. You can change the locations of the data, just
+not the data. Each pass only writes the pixels appropriate for that
+pass, and assumes the data from previous passes is still valid.
+
+ png_read_rows(png_ptr, row_pointers, NULL,
+ number_of_rows);
+
+If you only want the first effect (the rectangles), do the same as
+before except pass the row buffer in the third parameter, and leave
+the second parameter NULL.
+
+ png_read_rows(png_ptr, NULL, row_pointers,
+ number_of_rows);
+
+Finishing a sequential read
+
+After you are finished reading the image through the
+low-level interface, you can finish reading the file. If you are
+interested in comments or time, which may be stored either before or
+after the image data, you should pass the separate png_info struct if
+you want to keep the comments from before and after the image
+separate. If you are not interested, you can pass NULL.
+
+ png_read_end(png_ptr, end_info);
+
+When you are done, you can free all memory allocated by libpng like this:
+
+ png_destroy_read_struct(&png_ptr, &info_ptr,
+ &end_info);
+
+It is also possible to individually free the info_ptr members that
+point to libpng-allocated storage with the following function:
+
+ png_free_data(png_ptr, info_ptr, mask, seq)
+ mask - identifies data to be freed, a mask
+ containing the bitwise OR of one or
+ more of
+ PNG_FREE_PLTE, PNG_FREE_TRNS,
+ PNG_FREE_HIST, PNG_FREE_ICCP,
+ PNG_FREE_PCAL, PNG_FREE_ROWS,
+ PNG_FREE_SCAL, PNG_FREE_SPLT,
+ PNG_FREE_TEXT, PNG_FREE_UNKN,
+ or simply PNG_FREE_ALL
+ seq - sequence number of item to be freed
+ (-1 for all items)
+
+This function may be safely called when the relevant storage has
+already been freed, or has not yet been allocated, or was allocated
+by the user and not by libpng, and will in those cases do nothing.
+The "seq" parameter is ignored if only one item of the selected data
+type, such as PLTE, is allowed. If "seq" is not -1, and multiple items
+are allowed for the data type identified in the mask, such as text or
+sPLT, only the n'th item in the structure is freed, where n is "seq".
+
+The default behavior is only to free data that was allocated internally
+by libpng. This can be changed, so that libpng will not free the data,
+or so that it will free data that was allocated by the user with png_malloc()
+or png_zalloc() and passed in via a png_set_*() function, with
+
+ png_data_freer(png_ptr, info_ptr, freer, mask)
+ mask - which data elements are affected
+ same choices as in png_free_data()
+ freer - one of
+ PNG_DESTROY_WILL_FREE_DATA
+ PNG_SET_WILL_FREE_DATA
+ PNG_USER_WILL_FREE_DATA
+
+This function only affects data that has already been allocated.
+You can call this function after reading the PNG data but before calling
+any png_set_*() functions, to control whether the user or the png_set_*()
+function is responsible for freeing any existing data that might be present,
+and again after the png_set_*() functions to control whether the user
+or png_destroy_*() is supposed to free the data. When the user assumes
+responsibility for libpng-allocated data, the application must use
+png_free() to free it, and when the user transfers responsibility to libpng
+for data that the user has allocated, the user must have used png_malloc()
+or png_zalloc() to allocate it.
+
+If you allocated your row_pointers in a single block, as suggested above in
+the description of the high level read interface, you must not transfer
+responsibility for freeing it to the png_set_rows or png_read_destroy function,
+because they would also try to free the individual row_pointers[i].
+
+If you allocated text_ptr.text, text_ptr.lang, and text_ptr.translated_keyword
+separately, do not transfer responsibility for freeing text_ptr to libpng,
+because when libpng fills a png_text structure it combines these members with
+the key member, and png_free_data() will free only text_ptr.key. Similarly,
+if you transfer responsibility for free'ing text_ptr from libpng to your
+application, your application must not separately free those members.
+
+The png_free_data() function will turn off the "valid" flag for anything
+it frees. If you need to turn the flag off for a chunk that was freed by
+your application instead of by libpng, you can use
+
+ png_set_invalid(png_ptr, info_ptr, mask);
+ mask - identifies the chunks to be made invalid,
+ containing the bitwise OR of one or
+ more of
+ PNG_INFO_gAMA, PNG_INFO_sBIT,
+ PNG_INFO_cHRM, PNG_INFO_PLTE,
+ PNG_INFO_tRNS, PNG_INFO_bKGD,
+ PNG_INFO_hIST, PNG_INFO_pHYs,
+ PNG_INFO_oFFs, PNG_INFO_tIME,
+ PNG_INFO_pCAL, PNG_INFO_sRGB,
+ PNG_INFO_iCCP, PNG_INFO_sPLT,
+ PNG_INFO_sCAL, PNG_INFO_IDAT
+
+For a more compact example of reading a PNG image, see the file example.c.
+
+Reading PNG files progressively
+
+The progressive reader is slightly different then the non-progressive
+reader. Instead of calling png_read_info(), png_read_rows(), and
+png_read_end(), you make one call to png_process_data(), which calls
+callbacks when it has the info, a row, or the end of the image. You
+set up these callbacks with png_set_progressive_read_fn(). You don't
+have to worry about the input/output functions of libpng, as you are
+giving the library the data directly in png_process_data(). I will
+assume that you have read the section on reading PNG files above,
+so I will only highlight the differences (although I will show
+all of the code).
+
+png_structp png_ptr;
+png_infop info_ptr;
+
+ /* An example code fragment of how you would
+ initialize the progressive reader in your
+ application. */
+ int
+ initialize_png_reader()
+ {
+ png_ptr = png_create_read_struct
+ (PNG_LIBPNG_VER_STRING, (png_voidp)user_error_ptr,
+ user_error_fn, user_warning_fn);
+ if (!png_ptr)
+ return (ERROR);
+ info_ptr = png_create_info_struct(png_ptr);
+ if (!info_ptr)
+ {
+ png_destroy_read_struct(&png_ptr, (png_infopp)NULL,
+ (png_infopp)NULL);
+ return (ERROR);
+ }
+
+ if (setjmp(png_jmpbuf(png_ptr)))
+ {
+ png_destroy_read_struct(&png_ptr, &info_ptr,
+ (png_infopp)NULL);
+ return (ERROR);
+ }
+
+ /* This one's new. You can provide functions
+ to be called when the header info is valid,
+ when each row is completed, and when the image
+ is finished. If you aren't using all functions,
+ you can specify NULL parameters. Even when all
+ three functions are NULL, you need to call
+ png_set_progressive_read_fn(). You can use
+ any struct as the user_ptr (cast to a void pointer
+ for the function call), and retrieve the pointer
+ from inside the callbacks using the function
+
+ png_get_progressive_ptr(png_ptr);
+
+ which will return a void pointer, which you have
+ to cast appropriately.
+ */
+ png_set_progressive_read_fn(png_ptr, (void *)user_ptr,
+ info_callback, row_callback, end_callback);
+
+ return 0;
+ }
+
+ /* A code fragment that you call as you receive blocks
+ of data */
+ int
+ process_data(png_bytep buffer, png_uint_32 length)
+ {
+ if (setjmp(png_jmpbuf(png_ptr)))
+ {
+ png_destroy_read_struct(&png_ptr, &info_ptr,
+ (png_infopp)NULL);
+ return (ERROR);
+ }
+
+ /* This one's new also. Simply give it a chunk
+ of data from the file stream (in order, of
+ course). On machines with segmented memory
+ models machines, don't give it any more than
+ 64K. The library seems to run fine with sizes
+ of 4K. Although you can give it much less if
+ necessary (I assume you can give it chunks of
+ 1 byte, I haven't tried less then 256 bytes
+ yet). When this function returns, you may
+ want to display any rows that were generated
+ in the row callback if you don't already do
+ so there.
+ */
+ png_process_data(png_ptr, info_ptr, buffer, length);
+ return 0;
+ }
+
+ /* This function is called (as set by
+ png_set_progressive_read_fn() above) when enough data
+ has been supplied so all of the header has been
+ read.
+ */
+ void
+ info_callback(png_structp png_ptr, png_infop info)
+ {
+ /* Do any setup here, including setting any of
+ the transformations mentioned in the Reading
+ PNG files section. For now, you _must_ call
+ either png_start_read_image() or
+ png_read_update_info() after all the
+ transformations are set (even if you don't set
+ any). You may start getting rows before
+ png_process_data() returns, so this is your
+ last chance to prepare for that.
+ */
+ }
+
+ /* This function is called when each row of image
+ data is complete */
+ void
+ row_callback(png_structp png_ptr, png_bytep new_row,
+ png_uint_32 row_num, int pass)
+ {
+ /* If the image is interlaced, and you turned
+ on the interlace handler, this function will
+ be called for every row in every pass. Some
+ of these rows will not be changed from the
+ previous pass. When the row is not changed,
+ the new_row variable will be NULL. The rows
+ and passes are called in order, so you don't
+ really need the row_num and pass, but I'm
+ supplying them because it may make your life
+ easier.
+
+ For the non-NULL rows of interlaced images,
+ you must call png_progressive_combine_row()
+ passing in the row and the old row. You can
+ call this function for NULL rows (it will just
+ return) and for non-interlaced images (it just
+ does the memcpy for you) if it will make the
+ code easier. Thus, you can just do this for
+ all cases:
+ */
+
+ png_progressive_combine_row(png_ptr, old_row,
+ new_row);
+
+ /* where old_row is what was displayed for
+ previously for the row. Note that the first
+ pass (pass == 0, really) will completely cover
+ the old row, so the rows do not have to be
+ initialized. After the first pass (and only
+ for interlaced images), you will have to pass
+ the current row, and the function will combine
+ the old row and the new row.
+ */
+ }
+
+ void
+ end_callback(png_structp png_ptr, png_infop info)
+ {
+ /* This function is called after the whole image
+ has been read, including any chunks after the
+ image (up to and including the IEND). You
+ will usually have the same info chunk as you
+ had in the header, although some data may have
+ been added to the comments and time fields.
+
+ Most people won't do much here, perhaps setting
+ a flag that marks the image as finished.
+ */
+ }
+
+
+
+IV. Writing
+
+Much of this is very similar to reading. However, everything of
+importance is repeated here, so you won't have to constantly look
+back up in the reading section to understand writing.
+
+Setup
+
+You will want to do the I/O initialization before you get into libpng,
+so if it doesn't work, you don't have anything to undo. If you are not
+using the standard I/O functions, you will need to replace them with
+custom writing functions. See the discussion under Customizing libpng.
+
+ FILE *fp = fopen(file_name, "wb");
+ if (!fp)
+ {
+ return (ERROR);
+ }
+
+Next, png_struct and png_info need to be allocated and initialized.
+As these can be both relatively large, you may not want to store these
+on the stack, unless you have stack space to spare. Of course, you
+will want to check if they return NULL. If you are also reading,
+you won't want to name your read structure and your write structure
+both "png_ptr"; you can call them anything you like, such as
+"read_ptr" and "write_ptr". Look at pngtest.c, for example.
+
+ png_structp png_ptr = png_create_write_struct
+ (PNG_LIBPNG_VER_STRING, (png_voidp)user_error_ptr,
+ user_error_fn, user_warning_fn);
+ if (!png_ptr)
+ return (ERROR);
+
+ png_infop info_ptr = png_create_info_struct(png_ptr);
+ if (!info_ptr)
+ {
+ png_destroy_write_struct(&png_ptr,
+ (png_infopp)NULL);
+ return (ERROR);
+ }
+
+If you want to use your own memory allocation routines,
+define PNG_USER_MEM_SUPPORTED and use
+png_create_write_struct_2() instead of png_create_write_struct():
+
+ png_structp png_ptr = png_create_write_struct_2
+ (PNG_LIBPNG_VER_STRING, (png_voidp)user_error_ptr,
+ user_error_fn, user_warning_fn, (png_voidp)
+ user_mem_ptr, user_malloc_fn, user_free_fn);
+
+After you have these structures, you will need to set up the
+error handling. When libpng encounters an error, it expects to
+longjmp() back to your routine. Therefore, you will need to call
+setjmp() and pass the png_jmpbuf(png_ptr). If you
+write the file from different routines, you will need to update
+the png_jmpbuf(png_ptr) every time you enter a new routine that will
+call a png_*() function. See your documentation of setjmp/longjmp
+for your compiler for more information on setjmp/longjmp. See
+the discussion on libpng error handling in the Customizing Libpng
+section below for more information on the libpng error handling.
+
+ if (setjmp(png_jmpbuf(png_ptr)))
+ {
+ png_destroy_write_struct(&png_ptr, &info_ptr);
+ fclose(fp);
+ return (ERROR);
+ }
+ ...
+ return;
+
+If you would rather avoid the complexity of setjmp/longjmp issues,
+you can compile libpng with PNG_SETJMP_NOT_SUPPORTED, in which case
+errors will result in a call to PNG_ABORT() which defaults to abort().
+
+Now you need to set up the output code. The default for libpng is to
+use the C function fwrite(). If you use this, you will need to pass a
+valid FILE * in the function png_init_io(). Be sure that the file is
+opened in binary mode. Again, if you wish to handle writing data in
+another way, see the discussion on libpng I/O handling in the Customizing
+Libpng section below.
+
+ png_init_io(png_ptr, fp);
+
+If you are embedding your PNG into a datastream such as MNG, and don't
+want libpng to write the 8-byte signature, or if you have already
+written the signature in your application, use
+
+ png_set_sig_bytes(png_ptr, 8);
+
+to inform libpng that it should not write a signature.
+
+Write callbacks
+
+At this point, you can set up a callback function that will be
+called after each row has been written, which you can use to control
+a progress meter or the like. It's demonstrated in pngtest.c.
+You must supply a function
+
+ void write_row_callback(png_ptr, png_uint_32 row,
+ int pass);
+ {
+ /* put your code here */
+ }
+
+(You can give it another name that you like instead of "write_row_callback")
+
+To inform libpng about your function, use
+
+ png_set_write_status_fn(png_ptr, write_row_callback);
+
+You now have the option of modifying how the compression library will
+run. The following functions are mainly for testing, but may be useful
+in some cases, like if you need to write PNG files extremely fast and
+are willing to give up some compression, or if you want to get the
+maximum possible compression at the expense of slower writing. If you
+have no special needs in this area, let the library do what it wants by
+not calling this function at all, as it has been tuned to deliver a good
+speed/compression ratio. The second parameter to png_set_filter() is
+the filter method, for which the only valid values are 0 (as of the
+July 1999 PNG specification, version 1.2) or 64 (if you are writing
+a PNG datastream that is to be embedded in a MNG datastream). The third
+parameter is a flag that indicates which filter type(s) are to be tested
+for each scanline. See the PNG specification for details on the specific
+filter types.
+
+
+ /* turn on or off filtering, and/or choose
+ specific filters. You can use either a single
+ PNG_FILTER_VALUE_NAME or the bitwise OR of one
+ or more PNG_FILTER_NAME masks. */
+ png_set_filter(png_ptr, 0,
+ PNG_FILTER_NONE | PNG_FILTER_VALUE_NONE |
+ PNG_FILTER_SUB | PNG_FILTER_VALUE_SUB |
+ PNG_FILTER_UP | PNG_FILTER_VALUE_UP |
+ PNG_FILTER_AVG | PNG_FILTER_VALUE_AVG |
+ PNG_FILTER_PAETH | PNG_FILTER_VALUE_PAETH|
+ PNG_ALL_FILTERS);
+
+If an application
+wants to start and stop using particular filters during compression,
+it should start out with all of the filters (to ensure that the previous
+row of pixels will be stored in case it's needed later), and then add
+and remove them after the start of compression.
+
+If you are writing a PNG datastream that is to be embedded in a MNG
+datastream, the second parameter can be either 0 or 64.
+
+The png_set_compression_*() functions interface to the zlib compression
+library, and should mostly be ignored unless you really know what you are
+doing. The only generally useful call is png_set_compression_level()
+which changes how much time zlib spends on trying to compress the image
+data. See the Compression Library (zlib.h and algorithm.txt, distributed
+with zlib) for details on the compression levels.
+
+ /* set the zlib compression level */
+ png_set_compression_level(png_ptr,
+ Z_BEST_COMPRESSION);
+
+ /* set other zlib parameters */
+ png_set_compression_mem_level(png_ptr, 8);
+ png_set_compression_strategy(png_ptr,
+ Z_DEFAULT_STRATEGY);
+ png_set_compression_window_bits(png_ptr, 15);
+ png_set_compression_method(png_ptr, 8);
+ png_set_compression_buffer_size(png_ptr, 8192)
+
+extern PNG_EXPORT(void,png_set_zbuf_size)
+
+Setting the contents of info for output
+
+You now need to fill in the png_info structure with all the data you
+wish to write before the actual image. Note that the only thing you
+are allowed to write after the image is the text chunks and the time
+chunk (as of PNG Specification 1.2, anyway). See png_write_end() and
+the latest PNG specification for more information on that. If you
+wish to write them before the image, fill them in now, and flag that
+data as being valid. If you want to wait until after the data, don't
+fill them until png_write_end(). For all the fields in png_info and
+their data types, see png.h. For explanations of what the fields
+contain, see the PNG specification.
+
+Some of the more important parts of the png_info are:
+
+ png_set_IHDR(png_ptr, info_ptr, width, height,
+ bit_depth, color_type, interlace_type,
+ compression_type, filter_method)
+ width - holds the width of the image
+ in pixels (up to 2^31).
+ height - holds the height of the image
+ in pixels (up to 2^31).
+ bit_depth - holds the bit depth of one of the
+ image channels.
+ (valid values are 1, 2, 4, 8, 16
+ and depend also on the
+ color_type. See also significant
+ bits (sBIT) below).
+ color_type - describes which color/alpha
+ channels are present.
+ PNG_COLOR_TYPE_GRAY
+ (bit depths 1, 2, 4, 8, 16)
+ PNG_COLOR_TYPE_GRAY_ALPHA
+ (bit depths 8, 16)
+ PNG_COLOR_TYPE_PALETTE
+ (bit depths 1, 2, 4, 8)
+ PNG_COLOR_TYPE_RGB
+ (bit_depths 8, 16)
+ PNG_COLOR_TYPE_RGB_ALPHA
+ (bit_depths 8, 16)
+
+ PNG_COLOR_MASK_PALETTE
+ PNG_COLOR_MASK_COLOR
+ PNG_COLOR_MASK_ALPHA
+
+ interlace_type - PNG_INTERLACE_NONE or
+ PNG_INTERLACE_ADAM7
+ compression_type - (must be
+ PNG_COMPRESSION_TYPE_DEFAULT)
+ filter_method - (must be PNG_FILTER_TYPE_DEFAULT
+ or, if you are writing a PNG to
+ be embedded in a MNG datastream,
+ can also be
+ PNG_INTRAPIXEL_DIFFERENCING)
+
+If you call png_set_IHDR(), the call must appear before any of the
+other png_set_*() functions, because they might require access to some of
+the IHDR settings. The remaining png_set_*() functions can be called
+in any order.
+
+If you wish, you can reset the compression_type, interlace_type, or
+filter_method later by calling png_set_IHDR() again; if you do this, the
+width, height, bit_depth, and color_type must be the same in each call.
+
+ png_set_PLTE(png_ptr, info_ptr, palette,
+ num_palette);
+ palette - the palette for the file
+ (array of png_color)
+ num_palette - number of entries in the palette
+
+ png_set_gAMA(png_ptr, info_ptr, gamma);
+ gamma - the gamma the image was created
+ at (PNG_INFO_gAMA)
+
+ png_set_sRGB(png_ptr, info_ptr, srgb_intent);
+ srgb_intent - the rendering intent
+ (PNG_INFO_sRGB) The presence of
+ the sRGB chunk means that the pixel
+ data is in the sRGB color space.
+ This chunk also implies specific
+ values of gAMA and cHRM. Rendering
+ intent is the CSS-1 property that
+ has been defined by the International
+ Color Consortium
+ (http://www.color.org).
+ It can be one of
+ PNG_sRGB_INTENT_SATURATION,
+ PNG_sRGB_INTENT_PERCEPTUAL,
+ PNG_sRGB_INTENT_ABSOLUTE, or
+ PNG_sRGB_INTENT_RELATIVE.
+
+
+ png_set_sRGB_gAMA_and_cHRM(png_ptr, info_ptr,
+ srgb_intent);
+ srgb_intent - the rendering intent
+ (PNG_INFO_sRGB) The presence of the
+ sRGB chunk means that the pixel
+ data is in the sRGB color space.
+ This function also causes gAMA and
+ cHRM chunks with the specific values
+ that are consistent with sRGB to be
+ written.
+
+ png_set_iCCP(png_ptr, info_ptr, name, compression_type,
+ profile, proflen);
+ name - The profile name.
+ compression - The compression type; always
+ PNG_COMPRESSION_TYPE_BASE for PNG 1.0.
+ You may give NULL to this argument to
+ ignore it.
+ profile - International Color Consortium color
+ profile data. May contain NULs.
+ proflen - length of profile data in bytes.
+
+ png_set_sBIT(png_ptr, info_ptr, sig_bit);
+ sig_bit - the number of significant bits for
+ (PNG_INFO_sBIT) each of the gray, red,
+ green, and blue channels, whichever are
+ appropriate for the given color type
+ (png_color_16)
+
+ png_set_tRNS(png_ptr, info_ptr, trans_alpha,
+ num_trans, trans_color);
+ trans_alpha - array of alpha (transparency)
+ entries for palette (PNG_INFO_tRNS)
+ trans_color - graylevel or color sample values
+ (in order red, green, blue) of the
+ single transparent color for
+ non-paletted images (PNG_INFO_tRNS)
+ num_trans - number of transparent entries
+ (PNG_INFO_tRNS)
+
+ png_set_hIST(png_ptr, info_ptr, hist);
+ (PNG_INFO_hIST)
+ hist - histogram of palette (array of
+ png_uint_16)
+
+ png_set_tIME(png_ptr, info_ptr, mod_time);
+ mod_time - time image was last modified
+ (PNG_VALID_tIME)
+
+ png_set_bKGD(png_ptr, info_ptr, background);
+ background - background color (PNG_VALID_bKGD)
+
+ png_set_text(png_ptr, info_ptr, text_ptr, num_text);
+ text_ptr - array of png_text holding image
+ comments
+ text_ptr[i].compression - type of compression used
+ on "text" PNG_TEXT_COMPRESSION_NONE
+ PNG_TEXT_COMPRESSION_zTXt
+ PNG_ITXT_COMPRESSION_NONE
+ PNG_ITXT_COMPRESSION_zTXt
+ text_ptr[i].key - keyword for comment. Must contain
+ 1-79 characters.
+ text_ptr[i].text - text comments for current
+ keyword. Can be NULL or empty.
+ text_ptr[i].text_length - length of text string,
+ after decompression, 0 for iTXt
+ text_ptr[i].itxt_length - length of itxt string,
+ after decompression, 0 for tEXt/zTXt
+ text_ptr[i].lang - language of comment (NULL or
+ empty for unknown).
+ text_ptr[i].translated_keyword - keyword in UTF-8 (NULL
+ or empty for unknown).
+ Note that the itxt_length, lang, and lang_key
+ members of the text_ptr structure only exist
+ when the library is built with iTXt chunk support.
+
+ num_text - number of comments
+
+ png_set_sPLT(png_ptr, info_ptr, &palette_ptr,
+ num_spalettes);
+ palette_ptr - array of png_sPLT_struct structures
+ to be added to the list of palettes
+ in the info structure.
+ num_spalettes - number of palette structures to be
+ added.
+
+ png_set_oFFs(png_ptr, info_ptr, offset_x, offset_y,
+ unit_type);
+ offset_x - positive offset from the left
+ edge of the screen
+ offset_y - positive offset from the top
+ edge of the screen
+ unit_type - PNG_OFFSET_PIXEL, PNG_OFFSET_MICROMETER
+
+ png_set_pHYs(png_ptr, info_ptr, res_x, res_y,
+ unit_type);
+ res_x - pixels/unit physical resolution
+ in x direction
+ res_y - pixels/unit physical resolution
+ in y direction
+ unit_type - PNG_RESOLUTION_UNKNOWN,
+ PNG_RESOLUTION_METER
+
+ png_set_sCAL(png_ptr, info_ptr, unit, width, height)
+ unit - physical scale units (an integer)
+ width - width of a pixel in physical scale units
+ height - height of a pixel in physical scale units
+ (width and height are doubles)
+
+ png_set_sCAL_s(png_ptr, info_ptr, unit, width, height)
+ unit - physical scale units (an integer)
+ width - width of a pixel in physical scale units
+ height - height of a pixel in physical scale units
+ (width and height are strings like "2.54")
+
+ png_set_unknown_chunks(png_ptr, info_ptr, &unknowns,
+ num_unknowns)
+ unknowns - array of png_unknown_chunk
+ structures holding unknown chunks
+ unknowns[i].name - name of unknown chunk
+ unknowns[i].data - data of unknown chunk
+ unknowns[i].size - size of unknown chunk's data
+ unknowns[i].location - position to write chunk in file
+ 0: do not write chunk
+ PNG_HAVE_IHDR: before PLTE
+ PNG_HAVE_PLTE: before IDAT
+ PNG_AFTER_IDAT: after IDAT
+
+The "location" member is set automatically according to
+what part of the output file has already been written.
+You can change its value after calling png_set_unknown_chunks()
+as demonstrated in pngtest.c. Within each of the "locations",
+the chunks are sequenced according to their position in the
+structure (that is, the value of "i", which is the order in which
+the chunk was either read from the input file or defined with
+png_set_unknown_chunks).
+
+A quick word about text and num_text. text is an array of png_text
+structures. num_text is the number of valid structures in the array.
+Each png_text structure holds a language code, a keyword, a text value,
+and a compression type.
+
+The compression types have the same valid numbers as the compression
+types of the image data. Currently, the only valid number is zero.
+However, you can store text either compressed or uncompressed, unlike
+images, which always have to be compressed. So if you don't want the
+text compressed, set the compression type to PNG_TEXT_COMPRESSION_NONE.
+Because tEXt and zTXt chunks don't have a language field, if you
+specify PNG_TEXT_COMPRESSION_NONE or PNG_TEXT_COMPRESSION_zTXt
+any language code or translated keyword will not be written out.
+
+Until text gets around 1000 bytes, it is not worth compressing it.
+After the text has been written out to the file, the compression type
+is set to PNG_TEXT_COMPRESSION_NONE_WR or PNG_TEXT_COMPRESSION_zTXt_WR,
+so that it isn't written out again at the end (in case you are calling
+png_write_end() with the same struct.
+
+The keywords that are given in the PNG Specification are:
+
+ Title Short (one line) title or
+ caption for image
+ Author Name of image's creator
+ Description Description of image (possibly long)
+ Copyright Copyright notice
+ Creation Time Time of original image creation
+ (usually RFC 1123 format, see below)
+ Software Software used to create the image
+ Disclaimer Legal disclaimer
+ Warning Warning of nature of content
+ Source Device used to create the image
+ Comment Miscellaneous comment; conversion
+ from other image format
+
+The keyword-text pairs work like this. Keywords should be short
+simple descriptions of what the comment is about. Some typical
+keywords are found in the PNG specification, as is some recommendations
+on keywords. You can repeat keywords in a file. You can even write
+some text before the image and some after. For example, you may want
+to put a description of the image before the image, but leave the
+disclaimer until after, so viewers working over modem connections
+don't have to wait for the disclaimer to go over the modem before
+they start seeing the image. Finally, keywords should be full
+words, not abbreviations. Keywords and text are in the ISO 8859-1
+(Latin-1) character set (a superset of regular ASCII) and can not
+contain NUL characters, and should not contain control or other
+unprintable characters. To make the comments widely readable, stick
+with basic ASCII, and avoid machine specific character set extensions
+like the IBM-PC character set. The keyword must be present, but
+you can leave off the text string on non-compressed pairs.
+Compressed pairs must have a text string, as only the text string
+is compressed anyway, so the compression would be meaningless.
+
+PNG supports modification time via the png_time structure. Two
+conversion routines are provided, png_convert_from_time_t() for
+time_t and png_convert_from_struct_tm() for struct tm. The
+time_t routine uses gmtime(). You don't have to use either of
+these, but if you wish to fill in the png_time structure directly,
+you should provide the time in universal time (GMT) if possible
+instead of your local time. Note that the year number is the full
+year (e.g. 1998, rather than 98 - PNG is year 2000 compliant!), and
+that months start with 1.
+
+If you want to store the time of the original image creation, you should
+use a plain tEXt chunk with the "Creation Time" keyword. This is
+necessary because the "creation time" of a PNG image is somewhat vague,
+depending on whether you mean the PNG file, the time the image was
+created in a non-PNG format, a still photo from which the image was
+scanned, or possibly the subject matter itself. In order to facilitate
+machine-readable dates, it is recommended that the "Creation Time"
+tEXt chunk use RFC 1123 format dates (e.g. "22 May 1997 18:07:10 GMT"),
+although this isn't a requirement. Unlike the tIME chunk, the
+"Creation Time" tEXt chunk is not expected to be automatically changed
+by the software. To facilitate the use of RFC 1123 dates, a function
+png_convert_to_rfc1123(png_timep) is provided to convert from PNG
+time to an RFC 1123 format string.
+
+Writing unknown chunks
+
+You can use the png_set_unknown_chunks function to queue up chunks
+for writing. You give it a chunk name, raw data, and a size; that's
+all there is to it. The chunks will be written by the next following
+png_write_info_before_PLTE, png_write_info, or png_write_end function.
+Any chunks previously read into the info structure's unknown-chunk
+list will also be written out in a sequence that satisfies the PNG
+specification's ordering rules.
+
+The high-level write interface
+
+At this point there are two ways to proceed; through the high-level
+write interface, or through a sequence of low-level write operations.
+You can use the high-level interface if your image data is present
+in the info structure. All defined output
+transformations are permitted, enabled by the following masks.
+
+ PNG_TRANSFORM_IDENTITY No transformation
+ PNG_TRANSFORM_PACKING Pack 1, 2 and 4-bit samples
+ PNG_TRANSFORM_PACKSWAP Change order of packed
+ pixels to LSB first
+ PNG_TRANSFORM_INVERT_MONO Invert monochrome images
+ PNG_TRANSFORM_SHIFT Normalize pixels to the
+ sBIT depth
+ PNG_TRANSFORM_BGR Flip RGB to BGR, RGBA
+ to BGRA
+ PNG_TRANSFORM_SWAP_ALPHA Flip RGBA to ARGB or GA
+ to AG
+ PNG_TRANSFORM_INVERT_ALPHA Change alpha from opacity
+ to transparency
+ PNG_TRANSFORM_SWAP_ENDIAN Byte-swap 16-bit samples
+ PNG_TRANSFORM_STRIP_FILLER Strip out filler
+ bytes (deprecated).
+ PNG_TRANSFORM_STRIP_FILLER_BEFORE Strip out leading
+ filler bytes
+ PNG_TRANSFORM_STRIP_FILLER_AFTER Strip out trailing
+ filler bytes
+
+If you have valid image data in the info structure (you can use
+png_set_rows() to put image data in the info structure), simply do this:
+
+ png_write_png(png_ptr, info_ptr, png_transforms, NULL)
+
+where png_transforms is an integer containing the bitwise OR of some set of
+transformation flags. This call is equivalent to png_write_info(),
+followed the set of transformations indicated by the transform mask,
+then png_write_image(), and finally png_write_end().
+
+(The final parameter of this call is not yet used. Someday it might point
+to transformation parameters required by some future output transform.)
+
+You must use png_transforms and not call any png_set_transform() functions
+when you use png_write_png().
+
+The low-level write interface
+
+If you are going the low-level route instead, you are now ready to
+write all the file information up to the actual image data. You do
+this with a call to png_write_info().
+
+ png_write_info(png_ptr, info_ptr);
+
+Note that there is one transformation you may need to do before
+png_write_info(). In PNG files, the alpha channel in an image is the
+level of opacity. If your data is supplied as a level of transparency,
+you can invert the alpha channel before you write it, so that 0 is
+fully transparent and 255 (in 8-bit or paletted images) or 65535
+(in 16-bit images) is fully opaque, with
+
+ png_set_invert_alpha(png_ptr);
+
+This must appear before png_write_info() instead of later with the
+other transformations because in the case of paletted images the tRNS
+chunk data has to be inverted before the tRNS chunk is written. If
+your image is not a paletted image, the tRNS data (which in such cases
+represents a single color to be rendered as transparent) won't need to
+be changed, and you can safely do this transformation after your
+png_write_info() call.
+
+If you need to write a private chunk that you want to appear before
+the PLTE chunk when PLTE is present, you can write the PNG info in
+two steps, and insert code to write your own chunk between them:
+
+ png_write_info_before_PLTE(png_ptr, info_ptr);
+ png_set_unknown_chunks(png_ptr, info_ptr, ...);
+ png_write_info(png_ptr, info_ptr);
+
+After you've written the file information, you can set up the library
+to handle any special transformations of the image data. The various
+ways to transform the data will be described in the order that they
+should occur. This is important, as some of these change the color
+type and/or bit depth of the data, and some others only work on
+certain color types and bit depths. Even though each transformation
+checks to see if it has data that it can do something with, you should
+make sure to only enable a transformation if it will be valid for the
+data. For example, don't swap red and blue on grayscale data.
+
+PNG files store RGB pixels packed into 3 or 6 bytes. This code tells
+the library to strip input data that has 4 or 8 bytes per pixel down
+to 3 or 6 bytes (or strip 2 or 4-byte grayscale+filler data to 1 or 2
+bytes per pixel).
+
+ png_set_filler(png_ptr, 0, PNG_FILLER_BEFORE);
+
+where the 0 is unused, and the location is either PNG_FILLER_BEFORE or
+PNG_FILLER_AFTER, depending upon whether the filler byte in the pixel
+is stored XRGB or RGBX.
+
+PNG files pack pixels of bit depths 1, 2, and 4 into bytes as small as
+they can, resulting in, for example, 8 pixels per byte for 1 bit files.
+If the data is supplied at 1 pixel per byte, use this code, which will
+correctly pack the pixels into a single byte:
+
+ png_set_packing(png_ptr);
+
+PNG files reduce possible bit depths to 1, 2, 4, 8, and 16. If your
+data is of another bit depth, you can write an sBIT chunk into the
+file so that decoders can recover the original data if desired.
+
+ /* Set the true bit depth of the image data */
+ if (color_type & PNG_COLOR_MASK_COLOR)
+ {
+ sig_bit.red = true_bit_depth;
+ sig_bit.green = true_bit_depth;
+ sig_bit.blue = true_bit_depth;
+ }
+ else
+ {
+ sig_bit.gray = true_bit_depth;
+ }
+ if (color_type & PNG_COLOR_MASK_ALPHA)
+ {
+ sig_bit.alpha = true_bit_depth;
+ }
+
+ png_set_sBIT(png_ptr, info_ptr, &sig_bit);
+
+If the data is stored in the row buffer in a bit depth other than
+one supported by PNG (e.g. 3 bit data in the range 0-7 for a 4-bit PNG),
+this will scale the values to appear to be the correct bit depth as
+is required by PNG.
+
+ png_set_shift(png_ptr, &sig_bit);
+
+PNG files store 16 bit pixels in network byte order (big-endian,
+ie. most significant bits first). This code would be used if they are
+supplied the other way (little-endian, i.e. least significant bits
+first, the way PCs store them):
+
+ if (bit_depth > 8)
+ png_set_swap(png_ptr);
+
+If you are using packed-pixel images (1, 2, or 4 bits/pixel), and you
+need to change the order the pixels are packed into bytes, you can use:
+
+ if (bit_depth < 8)
+ png_set_packswap(png_ptr);
+
+PNG files store 3 color pixels in red, green, blue order. This code
+would be used if they are supplied as blue, green, red:
+
+ png_set_bgr(png_ptr);
+
+PNG files describe monochrome as black being zero and white being
+one. This code would be used if the pixels are supplied with this reversed
+(black being one and white being zero):
+
+ png_set_invert_mono(png_ptr);
+
+Finally, you can write your own transformation function if none of
+the existing ones meets your needs. This is done by setting a callback
+with
+
+ png_set_write_user_transform_fn(png_ptr,
+ write_transform_fn);
+
+You must supply the function
+
+ void write_transform_fn(png_ptr ptr, row_info_ptr
+ row_info, png_bytep data)
+
+See pngtest.c for a working example. Your function will be called
+before any of the other transformations are processed.
+
+You can also set up a pointer to a user structure for use by your
+callback function.
+
+ png_set_user_transform_info(png_ptr, user_ptr, 0, 0);
+
+The user_channels and user_depth parameters of this function are ignored
+when writing; you can set them to zero as shown.
+
+You can retrieve the pointer via the function png_get_user_transform_ptr().
+For example:
+
+ voidp write_user_transform_ptr =
+ png_get_user_transform_ptr(png_ptr);
+
+It is possible to have libpng flush any pending output, either manually,
+or automatically after a certain number of lines have been written. To
+flush the output stream a single time call:
+
+ png_write_flush(png_ptr);
+
+and to have libpng flush the output stream periodically after a certain
+number of scanlines have been written, call:
+
+ png_set_flush(png_ptr, nrows);
+
+Note that the distance between rows is from the last time png_write_flush()
+was called, or the first row of the image if it has never been called.
+So if you write 50 lines, and then png_set_flush 25, it will flush the
+output on the next scanline, and every 25 lines thereafter, unless
+png_write_flush() is called before 25 more lines have been written.
+If nrows is too small (less than about 10 lines for a 640 pixel wide
+RGB image) the image compression may decrease noticeably (although this
+may be acceptable for real-time applications). Infrequent flushing will
+only degrade the compression performance by a few percent over images
+that do not use flushing.
+
+Writing the image data
+
+That's it for the transformations. Now you can write the image data.
+The simplest way to do this is in one function call. If you have the
+whole image in memory, you can just call png_write_image() and libpng
+will write the image. You will need to pass in an array of pointers to
+each row. This function automatically handles interlacing, so you don't
+need to call png_set_interlace_handling() or call this function multiple
+times, or any of that other stuff necessary with png_write_rows().
+
+ png_write_image(png_ptr, row_pointers);
+
+where row_pointers is:
+
+ png_byte *row_pointers[height];
+
+You can point to void or char or whatever you use for pixels.
+
+If you don't want to write the whole image at once, you can
+use png_write_rows() instead. If the file is not interlaced,
+this is simple:
+
+ png_write_rows(png_ptr, row_pointers,
+ number_of_rows);
+
+row_pointers is the same as in the png_write_image() call.
+
+If you are just writing one row at a time, you can do this with
+a single row_pointer instead of an array of row_pointers:
+
+ png_bytep row_pointer = row;
+
+ png_write_row(png_ptr, row_pointer);
+
+When the file is interlaced, things can get a good deal more complicated.
+The only currently (as of the PNG Specification version 1.2, dated July
+1999) defined interlacing scheme for PNG files is the "Adam7" interlace
+scheme, that breaks down an image into seven smaller images of varying
+size. libpng will build these images for you, or you can do them
+yourself. If you want to build them yourself, see the PNG specification
+for details of which pixels to write when.
+
+If you don't want libpng to handle the interlacing details, just
+use png_set_interlace_handling() and call png_write_rows() the
+correct number of times to write all seven sub-images.
+
+If you want libpng to build the sub-images, call this before you start
+writing any rows:
+
+ number_of_passes =
+ png_set_interlace_handling(png_ptr);
+
+This will return the number of passes needed. Currently, this is seven,
+but may change if another interlace type is added.
+
+Then write the complete image number_of_passes times.
+
+ png_write_rows(png_ptr, row_pointers,
+ number_of_rows);
+
+As some of these rows are not used, and thus return immediately, you may
+want to read about interlacing in the PNG specification, and only update
+the rows that are actually used.
+
+Finishing a sequential write
+
+After you are finished writing the image, you should finish writing
+the file. If you are interested in writing comments or time, you should
+pass an appropriately filled png_info pointer. If you are not interested,
+you can pass NULL.
+
+ png_write_end(png_ptr, info_ptr);
+
+When you are done, you can free all memory used by libpng like this:
+
+ png_destroy_write_struct(&png_ptr, &info_ptr);
+
+It is also possible to individually free the info_ptr members that
+point to libpng-allocated storage with the following function:
+
+ png_free_data(png_ptr, info_ptr, mask, seq)
+ mask - identifies data to be freed, a mask
+ containing the bitwise OR of one or
+ more of
+ PNG_FREE_PLTE, PNG_FREE_TRNS,
+ PNG_FREE_HIST, PNG_FREE_ICCP,
+ PNG_FREE_PCAL, PNG_FREE_ROWS,
+ PNG_FREE_SCAL, PNG_FREE_SPLT,
+ PNG_FREE_TEXT, PNG_FREE_UNKN,
+ or simply PNG_FREE_ALL
+ seq - sequence number of item to be freed
+ (-1 for all items)
+
+This function may be safely called when the relevant storage has
+already been freed, or has not yet been allocated, or was allocated
+by the user and not by libpng, and will in those cases do nothing.
+The "seq" parameter is ignored if only one item of the selected data
+type, such as PLTE, is allowed. If "seq" is not -1, and multiple items
+are allowed for the data type identified in the mask, such as text or
+sPLT, only the n'th item in the structure is freed, where n is "seq".
+
+If you allocated data such as a palette that you passed in to libpng
+with png_set_*, you must not free it until just before the call to
+png_destroy_write_struct().
+
+The default behavior is only to free data that was allocated internally
+by libpng. This can be changed, so that libpng will not free the data,
+or so that it will free data that was allocated by the user with png_malloc()
+or png_zalloc() and passed in via a png_set_*() function, with
+
+ png_data_freer(png_ptr, info_ptr, freer, mask)
+ mask - which data elements are affected
+ same choices as in png_free_data()
+ freer - one of
+ PNG_DESTROY_WILL_FREE_DATA
+ PNG_SET_WILL_FREE_DATA
+ PNG_USER_WILL_FREE_DATA
+
+For example, to transfer responsibility for some data from a read structure
+to a write structure, you could use
+
+ png_data_freer(read_ptr, read_info_ptr,
+ PNG_USER_WILL_FREE_DATA,
+ PNG_FREE_PLTE|PNG_FREE_tRNS|PNG_FREE_hIST)
+ png_data_freer(write_ptr, write_info_ptr,
+ PNG_DESTROY_WILL_FREE_DATA,
+ PNG_FREE_PLTE|PNG_FREE_tRNS|PNG_FREE_hIST)
+
+thereby briefly reassigning responsibility for freeing to the user but
+immediately afterwards reassigning it once more to the write_destroy
+function. Having done this, it would then be safe to destroy the read
+structure and continue to use the PLTE, tRNS, and hIST data in the write
+structure.
+
+This function only affects data that has already been allocated.
+You can call this function before calling after the png_set_*() functions
+to control whether the user or png_destroy_*() is supposed to free the data.
+When the user assumes responsibility for libpng-allocated data, the
+application must use
+png_free() to free it, and when the user transfers responsibility to libpng
+for data that the user has allocated, the user must have used png_malloc()
+or png_zalloc() to allocate it.
+
+If you allocated text_ptr.text, text_ptr.lang, and text_ptr.translated_keyword
+separately, do not transfer responsibility for freeing text_ptr to libpng,
+because when libpng fills a png_text structure it combines these members with
+the key member, and png_free_data() will free only text_ptr.key. Similarly,
+if you transfer responsibility for free'ing text_ptr from libpng to your
+application, your application must not separately free those members.
+For a more compact example of writing a PNG image, see the file example.c.
+
+V. Modifying/Customizing libpng:
+
+There are two issues here. The first is changing how libpng does
+standard things like memory allocation, input/output, and error handling.
+The second deals with more complicated things like adding new chunks,
+adding new transformations, and generally changing how libpng works.
+Both of those are compile-time issues; that is, they are generally
+determined at the time the code is written, and there is rarely a need
+to provide the user with a means of changing them.
+
+Memory allocation, input/output, and error handling
+
+All of the memory allocation, input/output, and error handling in libpng
+goes through callbacks that are user-settable. The default routines are
+in pngmem.c, pngrio.c, pngwio.c, and pngerror.c, respectively. To change
+these functions, call the appropriate png_set_*_fn() function.
+
+Memory allocation is done through the functions png_malloc(), png_calloc(),
+and png_free(). These currently just call the standard C functions.
+png_calloc() calls png_malloc() and then png_memset() to clear the newly
+allocated memory to zero. If your pointers can't access more then 64K
+at a time, you will want to set MAXSEG_64K in zlib.h. Since it is
+unlikely that the method of handling memory allocation on a platform
+will change between applications, these functions must be modified in
+the library at compile time. If you prefer to use a different method
+of allocating and freeing data, you can use png_create_read_struct_2() or
+png_create_write_struct_2() to register your own functions as described
+above. These functions also provide a void pointer that can be retrieved
+via
+
+ mem_ptr=png_get_mem_ptr(png_ptr);
+
+Your replacement memory functions must have prototypes as follows:
+
+ png_voidp malloc_fn(png_structp png_ptr,
+ png_size_t size);
+ void free_fn(png_structp png_ptr, png_voidp ptr);
+
+Your malloc_fn() must return NULL in case of failure. The png_malloc()
+function will normally call png_error() if it receives a NULL from the
+system memory allocator or from your replacement malloc_fn().
+
+Your free_fn() will never be called with a NULL ptr, since libpng's
+png_free() checks for NULL before calling free_fn().
+
+Input/Output in libpng is done through png_read() and png_write(),
+which currently just call fread() and fwrite(). The FILE * is stored in
+png_struct and is initialized via png_init_io(). If you wish to change
+the method of I/O, the library supplies callbacks that you can set
+through the function png_set_read_fn() and png_set_write_fn() at run
+time, instead of calling the png_init_io() function. These functions
+also provide a void pointer that can be retrieved via the function
+png_get_io_ptr(). For example:
+
+ png_set_read_fn(png_structp read_ptr,
+ voidp read_io_ptr, png_rw_ptr read_data_fn)
+
+ png_set_write_fn(png_structp write_ptr,
+ voidp write_io_ptr, png_rw_ptr write_data_fn,
+ png_flush_ptr output_flush_fn);
+
+ voidp read_io_ptr = png_get_io_ptr(read_ptr);
+ voidp write_io_ptr = png_get_io_ptr(write_ptr);
+
+The replacement I/O functions must have prototypes as follows:
+
+ void user_read_data(png_structp png_ptr,
+ png_bytep data, png_size_t length);
+ void user_write_data(png_structp png_ptr,
+ png_bytep data, png_size_t length);
+ void user_flush_data(png_structp png_ptr);
+
+The user_read_data() function is responsible for detecting and
+handling end-of-data errors.
+
+Supplying NULL for the read, write, or flush functions sets them back
+to using the default C stream functions, which expect the io_ptr to
+point to a standard *FILE structure. It is probably a mistake
+to use NULL for one of write_data_fn and output_flush_fn but not both
+of them, unless you have built libpng with PNG_NO_WRITE_FLUSH defined.
+It is an error to read from a write stream, and vice versa.
+
+Error handling in libpng is done through png_error() and png_warning().
+Errors handled through png_error() are fatal, meaning that png_error()
+should never return to its caller. Currently, this is handled via
+setjmp() and longjmp() (unless you have compiled libpng with
+PNG_SETJMP_NOT_SUPPORTED, in which case it is handled via PNG_ABORT()),
+but you could change this to do things like exit() if you should wish.
+
+On non-fatal errors, png_warning() is called
+to print a warning message, and then control returns to the calling code.
+By default png_error() and png_warning() print a message on stderr via
+fprintf() unless the library is compiled with PNG_NO_CONSOLE_IO defined
+(because you don't want the messages) or PNG_NO_STDIO defined (because
+fprintf() isn't available). If you wish to change the behavior of the error
+functions, you will need to set up your own message callbacks. These
+functions are normally supplied at the time that the png_struct is created.
+It is also possible to redirect errors and warnings to your own replacement
+functions after png_create_*_struct() has been called by calling:
+
+ png_set_error_fn(png_structp png_ptr,
+ png_voidp error_ptr, png_error_ptr error_fn,
+ png_error_ptr warning_fn);
+
+ png_voidp error_ptr = png_get_error_ptr(png_ptr);
+
+If NULL is supplied for either error_fn or warning_fn, then the libpng
+default function will be used, calling fprintf() and/or longjmp() if a
+problem is encountered. The replacement error functions should have
+parameters as follows:
+
+ void user_error_fn(png_structp png_ptr,
+ png_const_charp error_msg);
+ void user_warning_fn(png_structp png_ptr,
+ png_const_charp warning_msg);
+
+The motivation behind using setjmp() and longjmp() is the C++ throw and
+catch exception handling methods. This makes the code much easier to write,
+as there is no need to check every return code of every function call.
+However, there are some uncertainties about the status of local variables
+after a longjmp, so the user may want to be careful about doing anything
+after setjmp returns non-zero besides returning itself. Consult your
+compiler documentation for more details. For an alternative approach, you
+may wish to use the "cexcept" facility (see http://cexcept.sourceforge.net).
+
+Custom chunks
+
+If you need to read or write custom chunks, you may need to get deeper
+into the libpng code. The library now has mechanisms for storing
+and writing chunks of unknown type; you can even declare callbacks
+for custom chunks. However, this may not be good enough if the
+library code itself needs to know about interactions between your
+chunk and existing `intrinsic' chunks.
+
+If you need to write a new intrinsic chunk, first read the PNG
+specification. Acquire a first level of understanding of how it works.
+Pay particular attention to the sections that describe chunk names,
+and look at how other chunks were designed, so you can do things
+similarly. Second, check out the sections of libpng that read and
+write chunks. Try to find a chunk that is similar to yours and use
+it as a template. More details can be found in the comments inside
+the code. It is best to handle unknown chunks in a generic method,
+via callback functions, instead of by modifying libpng functions.
+
+If you wish to write your own transformation for the data, look through
+the part of the code that does the transformations, and check out some of
+the simpler ones to get an idea of how they work. Try to find a similar
+transformation to the one you want to add and copy off of it. More details
+can be found in the comments inside the code itself.
+
+Configuring for 16 bit platforms
+
+You will want to look into zconf.h to tell zlib (and thus libpng) that
+it cannot allocate more then 64K at a time. Even if you can, the memory
+won't be accessible. So limit zlib and libpng to 64K by defining MAXSEG_64K.
+
+Configuring for DOS
+
+For DOS users who only have access to the lower 640K, you will
+have to limit zlib's memory usage via a png_set_compression_mem_level()
+call. See zlib.h or zconf.h in the zlib library for more information.
+
+Configuring for Medium Model
+
+Libpng's support for medium model has been tested on most of the popular
+compilers. Make sure MAXSEG_64K gets defined, USE_FAR_KEYWORD gets
+defined, and FAR gets defined to far in pngconf.h, and you should be
+all set. Everything in the library (except for zlib's structure) is
+expecting far data. You must use the typedefs with the p or pp on
+the end for pointers (or at least look at them and be careful). Make
+note that the rows of data are defined as png_bytepp, which is an
+unsigned char far * far *.
+
+Configuring for gui/windowing platforms:
+
+You will need to write new error and warning functions that use the GUI
+interface, as described previously, and set them to be the error and
+warning functions at the time that png_create_*_struct() is called,
+in order to have them available during the structure initialization.
+They can be changed later via png_set_error_fn(). On some compilers,
+you may also have to change the memory allocators (png_malloc, etc.).
+
+Configuring for compiler xxx:
+
+All includes for libpng are in pngconf.h. If you need to add, change
+or delete an include, this is the place to do it.
+The includes that are not needed outside libpng are placed in pngpriv.h,
+which is only used by the routines inside libpng itself.
+The files in libpng proper only include pngpriv.h and png.h, which
+in turn includes pngconf.h.
+
+Configuring zlib:
+
+There are special functions to configure the compression. Perhaps the
+most useful one changes the compression level, which currently uses
+input compression values in the range 0 - 9. The library normally
+uses the default compression level (Z_DEFAULT_COMPRESSION = 6). Tests
+have shown that for a large majority of images, compression values in
+the range 3-6 compress nearly as well as higher levels, and do so much
+faster. For online applications it may be desirable to have maximum speed
+(Z_BEST_SPEED = 1). With versions of zlib after v0.99, you can also
+specify no compression (Z_NO_COMPRESSION = 0), but this would create
+files larger than just storing the raw bitmap. You can specify the
+compression level by calling:
+
+ png_set_compression_level(png_ptr, level);
+
+Another useful one is to reduce the memory level used by the library.
+The memory level defaults to 8, but it can be lowered if you are
+short on memory (running DOS, for example, where you only have 640K).
+Note that the memory level does have an effect on compression; among
+other things, lower levels will result in sections of incompressible
+data being emitted in smaller stored blocks, with a correspondingly
+larger relative overhead of up to 15% in the worst case.
+
+ png_set_compression_mem_level(png_ptr, level);
+
+The other functions are for configuring zlib. They are not recommended
+for normal use and may result in writing an invalid PNG file. See
+zlib.h for more information on what these mean.
+
+ png_set_compression_strategy(png_ptr,
+ strategy);
+ png_set_compression_window_bits(png_ptr,
+ window_bits);
+ png_set_compression_method(png_ptr, method);
+ png_set_compression_buffer_size(png_ptr, size);
+
+Controlling row filtering
+
+If you want to control whether libpng uses filtering or not, which
+filters are used, and how it goes about picking row filters, you
+can call one of these functions. The selection and configuration
+of row filters can have a significant impact on the size and
+encoding speed and a somewhat lesser impact on the decoding speed
+of an image. Filtering is enabled by default for RGB and grayscale
+images (with and without alpha), but not for paletted images nor
+for any images with bit depths less than 8 bits/pixel.
+
+The 'method' parameter sets the main filtering method, which is
+currently only '0' in the PNG 1.2 specification. The 'filters'
+parameter sets which filter(s), if any, should be used for each
+scanline. Possible values are PNG_ALL_FILTERS and PNG_NO_FILTERS
+to turn filtering on and off, respectively.
+
+Individual filter types are PNG_FILTER_NONE, PNG_FILTER_SUB,
+PNG_FILTER_UP, PNG_FILTER_AVG, PNG_FILTER_PAETH, which can be bitwise
+ORed together with '|' to specify one or more filters to use.
+These filters are described in more detail in the PNG specification.
+If you intend to change the filter type during the course of writing
+the image, you should start with flags set for all of the filters
+you intend to use so that libpng can initialize its internal
+structures appropriately for all of the filter types. (Note that this
+means the first row must always be adaptively filtered, because libpng
+currently does not allocate the filter buffers until png_write_row()
+is called for the first time.)
+
+ filters = PNG_FILTER_NONE | PNG_FILTER_SUB
+ PNG_FILTER_UP | PNG_FILTER_AVG |
+ PNG_FILTER_PAETH | PNG_ALL_FILTERS;
+
+ png_set_filter(png_ptr, PNG_FILTER_TYPE_BASE,
+ filters);
+ The second parameter can also be
+ PNG_INTRAPIXEL_DIFFERENCING if you are
+ writing a PNG to be embedded in a MNG
+ datastream. This parameter must be the
+ same as the value of filter_method used
+ in png_set_IHDR().
+
+It is also possible to influence how libpng chooses from among the
+available filters. This is done in one or both of two ways - by
+telling it how important it is to keep the same filter for successive
+rows, and by telling it the relative computational costs of the filters.
+
+ double weights[3] = {1.5, 1.3, 1.1},
+ costs[PNG_FILTER_VALUE_LAST] =
+ {1.0, 1.3, 1.3, 1.5, 1.7};
+
+ png_set_filter_heuristics(png_ptr,
+ PNG_FILTER_HEURISTIC_WEIGHTED, 3,
+ weights, costs);
+
+The weights are multiplying factors that indicate to libpng that the
+row filter should be the same for successive rows unless another row filter
+is that many times better than the previous filter. In the above example,
+if the previous 3 filters were SUB, SUB, NONE, the SUB filter could have a
+"sum of absolute differences" 1.5 x 1.3 times higher than other filters
+and still be chosen, while the NONE filter could have a sum 1.1 times
+higher than other filters and still be chosen. Unspecified weights are
+taken to be 1.0, and the specified weights should probably be declining
+like those above in order to emphasize recent filters over older filters.
+
+The filter costs specify for each filter type a relative decoding cost
+to be considered when selecting row filters. This means that filters
+with higher costs are less likely to be chosen over filters with lower
+costs, unless their "sum of absolute differences" is that much smaller.
+The costs do not necessarily reflect the exact computational speeds of
+the various filters, since this would unduly influence the final image
+size.
+
+Note that the numbers above were invented purely for this example and
+are given only to help explain the function usage. Little testing has
+been done to find optimum values for either the costs or the weights.
+
+Removing unwanted object code
+
+There are a bunch of #define's in pngconf.h that control what parts of
+libpng are compiled. All the defines end in _SUPPORTED. If you are
+never going to use a capability, you can change the #define to #undef
+before recompiling libpng and save yourself code and data space, or
+you can turn off individual capabilities with defines that begin with
+PNG_NO_.
+
+You can also turn all of the transforms and ancillary chunk capabilities
+off en masse with compiler directives that define
+PNG_NO_READ[or WRITE]_TRANSFORMS, or PNG_NO_READ[or WRITE]_ANCILLARY_CHUNKS,
+or all four,
+along with directives to turn on any of the capabilities that you do
+want. The PNG_NO_READ[or WRITE]_TRANSFORMS directives disable the extra
+transformations but still leave the library fully capable of reading
+and writing PNG files with all known public chunks. Use of the
+PNG_NO_READ[or WRITE]_ANCILLARY_CHUNKS directive produces a library
+that is incapable of reading or writing ancillary chunks. If you are
+not using the progressive reading capability, you can turn that off
+with PNG_NO_PROGRESSIVE_READ (don't confuse this with the INTERLACING
+capability, which you'll still have).
+
+All the reading and writing specific code are in separate files, so the
+linker should only grab the files it needs. However, if you want to
+make sure, or if you are building a stand alone library, all the
+reading files start with pngr and all the writing files start with
+pngw. The files that don't match either (like png.c, pngtrans.c, etc.)
+are used for both reading and writing, and always need to be included.
+The progressive reader is in pngpread.c
+
+If you are creating or distributing a dynamically linked library (a .so
+or DLL file), you should not remove or disable any parts of the library,
+as this will cause applications linked with different versions of the
+library to fail if they call functions not available in your library.
+The size of the library itself should not be an issue, because only
+those sections that are actually used will be loaded into memory.
+
+Requesting debug printout
+
+The macro definition PNG_DEBUG can be used to request debugging
+printout. Set it to an integer value in the range 0 to 3. Higher
+numbers result in increasing amounts of debugging information. The
+information is printed to the "stderr" file, unless another file
+name is specified in the PNG_DEBUG_FILE macro definition.
+
+When PNG_DEBUG > 0, the following functions (macros) become available:
+
+ png_debug(level, message)
+ png_debug1(level, message, p1)
+ png_debug2(level, message, p1, p2)
+
+in which "level" is compared to PNG_DEBUG to decide whether to print
+the message, "message" is the formatted string to be printed,
+and p1 and p2 are parameters that are to be embedded in the string
+according to printf-style formatting directives. For example,
+
+ png_debug1(2, "foo=%d\n", foo);
+
+is expanded to
+
+ if(PNG_DEBUG > 2)
+ fprintf(PNG_DEBUG_FILE, "foo=%d\n", foo);
+
+When PNG_DEBUG is defined but is zero, the macros aren't defined, but you
+can still use PNG_DEBUG to control your own debugging:
+
+ #ifdef PNG_DEBUG
+ fprintf(stderr, ...
+ #endif
+
+When PNG_DEBUG = 1, the macros are defined, but only png_debug statements
+having level = 0 will be printed. There aren't any such statements in
+this version of libpng, but if you insert some they will be printed.
+
+VI. MNG support
+
+The MNG specification (available at http://www.libpng.org/pub/mng) allows
+certain extensions to PNG for PNG images that are embedded in MNG datastreams.
+Libpng can support some of these extensions. To enable them, use the
+png_permit_mng_features() function:
+
+ feature_set = png_permit_mng_features(png_ptr, mask)
+ mask is a png_uint_32 containing the bitwise OR of the
+ features you want to enable. These include
+ PNG_FLAG_MNG_EMPTY_PLTE
+ PNG_FLAG_MNG_FILTER_64
+ PNG_ALL_MNG_FEATURES
+ feature_set is a png_uint_32 that is the bitwise AND of
+ your mask with the set of MNG features that is
+ supported by the version of libpng that you are using.
+
+It is an error to use this function when reading or writing a standalone
+PNG file with the PNG 8-byte signature. The PNG datastream must be wrapped
+in a MNG datastream. As a minimum, it must have the MNG 8-byte signature
+and the MHDR and MEND chunks. Libpng does not provide support for these
+or any other MNG chunks; your application must provide its own support for
+them. You may wish to consider using libmng (available at
+http://www.libmng.com) instead.
+
+VII. Changes to Libpng from version 0.88
+
+It should be noted that versions of libpng later than 0.96 are not
+distributed by the original libpng author, Guy Schalnat, nor by
+Andreas Dilger, who had taken over from Guy during 1996 and 1997, and
+distributed versions 0.89 through 0.96, but rather by another member
+of the original PNG Group, Glenn Randers-Pehrson. Guy and Andreas are
+still alive and well, but they have moved on to other things.
+
+The old libpng functions png_read_init(), png_write_init(),
+png_info_init(), png_read_destroy(), and png_write_destroy() have been
+moved to PNG_INTERNAL in version 0.95 to discourage their use. These
+functions will be removed from libpng version 2.0.0.
+
+The preferred method of creating and initializing the libpng structures is
+via the png_create_read_struct(), png_create_write_struct(), and
+png_create_info_struct() because they isolate the size of the structures
+from the application, allow version error checking, and also allow the
+use of custom error handling routines during the initialization, which
+the old functions do not. The functions png_read_destroy() and
+png_write_destroy() do not actually free the memory that libpng
+allocated for these structs, but just reset the data structures, so they
+can be used instead of png_destroy_read_struct() and
+png_destroy_write_struct() if you feel there is too much system overhead
+allocating and freeing the png_struct for each image read.
+
+Setting the error callbacks via png_set_message_fn() before
+png_read_init() as was suggested in libpng-0.88 is no longer supported
+because this caused applications that do not use custom error functions
+to fail if the png_ptr was not initialized to zero. It is still possible
+to set the error callbacks AFTER png_read_init(), or to change them with
+png_set_error_fn(), which is essentially the same function, but with a new
+name to force compilation errors with applications that try to use the old
+method.
+
+Starting with version 1.0.7, you can find out which version of the library
+you are using at run-time:
+
+ png_uint_32 libpng_vn = png_access_version_number();
+
+The number libpng_vn is constructed from the major version, minor
+version with leading zero, and release number with leading zero,
+(e.g., libpng_vn for version 1.0.7 is 10007).
+
+You can also check which version of png.h you used when compiling your
+application:
+
+ png_uint_32 application_vn = PNG_LIBPNG_VER;
+
+VIII. Changes to Libpng from version 1.0.x to 1.2.x
+
+Support for user memory management was enabled by default. To
+accomplish this, the functions png_create_read_struct_2(),
+png_create_write_struct_2(), png_set_mem_fn(), png_get_mem_ptr(),
+png_malloc_default(), and png_free_default() were added.
+
+Support for the iTXt chunk has been enabled by default as of
+version 1.2.41.
+
+Support for certain MNG features was enabled.
+
+Support for numbered error messages was added. However, we never got
+around to actually numbering the error messages. The function
+png_set_strip_error_numbers() was added (Note: the prototype for this
+function was inadvertently removed from png.h in PNG_NO_ASSEMBLER_CODE
+builds of libpng-1.2.15. It was restored in libpng-1.2.36).
+
+The png_malloc_warn() function was added at libpng-1.2.3. This issues
+a png_warning and returns NULL instead of aborting when it fails to
+acquire the requested memory allocation.
+
+Support for setting user limits on image width and height was enabled
+by default. The functions png_set_user_limits(), png_get_user_width_max(),
+and png_get_user_height_max() were added at libpng-1.2.6.
+
+The png_set_add_alpha() function was added at libpng-1.2.7.
+
+The function png_set_expand_gray_1_2_4_to_8() was added at libpng-1.2.9.
+Unlike png_set_gray_1_2_4_to_8(), the new function does not expand the
+tRNS chunk to alpha. The png_set_gray_1_2_4_to_8() function is
+deprecated.
+
+A number of macro definitions in support of runtime selection of
+assembler code features (especially Intel MMX code support) were
+added at libpng-1.2.0:
+
+ PNG_ASM_FLAG_MMX_SUPPORT_COMPILED
+ PNG_ASM_FLAG_MMX_SUPPORT_IN_CPU
+ PNG_ASM_FLAG_MMX_READ_COMBINE_ROW
+ PNG_ASM_FLAG_MMX_READ_INTERLACE
+ PNG_ASM_FLAG_MMX_READ_FILTER_SUB
+ PNG_ASM_FLAG_MMX_READ_FILTER_UP
+ PNG_ASM_FLAG_MMX_READ_FILTER_AVG
+ PNG_ASM_FLAG_MMX_READ_FILTER_PAETH
+ PNG_ASM_FLAGS_INITIALIZED
+ PNG_MMX_READ_FLAGS
+ PNG_MMX_FLAGS
+ PNG_MMX_WRITE_FLAGS
+ PNG_MMX_FLAGS
+
+We added the following functions in support of runtime
+selection of assembler code features:
+
+ png_get_mmx_flagmask()
+ png_set_mmx_thresholds()
+ png_get_asm_flags()
+ png_get_mmx_bitdepth_threshold()
+ png_get_mmx_rowbytes_threshold()
+ png_set_asm_flags()
+
+We replaced all of these functions with simple stubs in libpng-1.2.20,
+when the Intel assembler code was removed due to a licensing issue.
+
+These macros are deprecated:
+
+ PNG_READ_TRANSFORMS_NOT_SUPPORTED
+ PNG_PROGRESSIVE_READ_NOT_SUPPORTED
+ PNG_NO_SEQUENTIAL_READ_SUPPORTED
+ PNG_WRITE_TRANSFORMS_NOT_SUPPORTED
+ PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED
+ PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED
+
+They have been replaced, respectively, by:
+
+ PNG_NO_READ_TRANSFORMS
+ PNG_NO_PROGRESSIVE_READ
+ PNG_NO_SEQUENTIAL_READ
+ PNG_NO_WRITE_TRANSFORMS
+ PNG_NO_READ_ANCILLARY_CHUNKS
+ PNG_NO_WRITE_ANCILLARY_CHUNKS
+
+PNG_MAX_UINT was replaced with PNG_UINT_31_MAX. It has been
+deprecated since libpng-1.0.16 and libpng-1.2.6.
+
+The function
+ png_check_sig(sig, num)
+was replaced with
+ !png_sig_cmp(sig, 0, num)
+It has been deprecated since libpng-0.90.
+
+The function
+ png_set_gray_1_2_4_to_8()
+which also expands tRNS to alpha was replaced with
+ png_set_expand_gray_1_2_4_to_8()
+which does not. It has been deprecated since libpng-1.0.18 and 1.2.9.
+
+IX. Changes to Libpng from version 1.0.x/1.2.x to 1.4.x
+
+Private libpng prototypes and macro definitions were moved from
+png.h and pngconf.h into a new pngpriv.h header file.
+
+Functions png_set_benign_errors(), png_benign_error(), and
+png_chunk_benign_error() were added.
+
+Support for setting the maximum amount of memory that the application
+will allocate for reading chunks was added, as a security measure.
+The functions png_set_chunk_cache_max() and png_get_chunk_cache_max()
+were added to the library.
+
+We implemented support for I/O states by adding png_ptr member io_state
+and functions png_get_io_chunk_name() and png_get_io_state() in pngget.c
+
+We added PNG_TRANSFORM_GRAY_TO_RGB to the available high-level
+input transforms.
+
+Checking for and reporting of errors in the IHDR chunk is more thorough.
+
+Support for global arrays was removed, to improve thread safety.
+
+Some obsolete/deprecated macros and functions have been removed.
+
+Typecasted NULL definitions such as
+ #define png_voidp_NULL (png_voidp)NULL
+were eliminated. If you used these in your application, just use
+NULL instead.
+
+The png_struct and info_struct members "trans" and "trans_values" were
+changed to "trans_alpha" and "trans_color", respectively.
+
+The obsolete, unused pnggccrd.c and pngvcrd.c files and related makefiles
+were removed.
+
+The PNG_1_0_X and PNG_1_2_X macros were eliminated.
+
+The PNG_LEGACY_SUPPORTED macro was eliminated.
+
+Many WIN32_WCE #ifdefs were removed.
+
+The functions png_read_init(info_ptr), png_write_init(info_ptr),
+png_info_init(info_ptr), png_read_destroy(), and png_write_destroy()
+have been removed. They have been deprecated since libpng-0.95.
+
+The png_permit_empty_plte() was removed. It has been deprecated
+since libpng-1.0.9. Use png_permit_mng_features() instead.
+
+We removed the obsolete stub functions png_get_mmx_flagmask(),
+png_set_mmx_thresholds(), png_get_asm_flags(),
+png_get_mmx_bitdepth_threshold(), png_get_mmx_rowbytes_threshold(),
+png_set_asm_flags(), and png_mmx_supported()
+
+We removed the obsolete png_check_sig(), png_memcpy_check(), and
+png_memset_check() functions. Instead use !png_sig_cmp(), png_memcpy(),
+and png_memset(), respectively.
+
+The function png_set_gray_1_2_4_to_8() was removed. It has been
+deprecated since libpng-1.0.18 and 1.2.9, when it was replaced with
+png_set_expand_gray_1_2_4_to_8() because the former function also
+expanded palette images.
+
+We changed the prototype for png_malloc() from
+ png_malloc(png_structp png_ptr, png_uint_32 size)
+to
+ png_malloc(png_structp png_ptr, png_alloc_size_t size)
+
+The png_calloc() function was added and is used in place of
+of "png_malloc(); png_memset();" except in the case in png_read_png()
+where the array consists of pointers; in this case a "for" loop is used
+after the png_malloc() to set the pointers to NULL, to give robust.
+behavior in case the application runs out of memory part-way through
+the process.
+
+We changed the prototypes of png_get_compression_buffer_size() and
+png_set_compression_buffer_size() to work with png_size_t instead of
+png_uint_32.
+
+Support for numbered error messages was removed by default, since we
+never got around to actually numbering the error messages. The function
+png_set_strip_error_numbers() was removed from the library by default.
+
+The png_zalloc() and png_zfree() functions are no longer exported.
+The png_zalloc() function no longer zeroes out the memory that it
+allocates.
+
+We removed the trailing '.' from the warning and error messages.
+
+X. Detecting libpng
+
+The png_get_io_ptr() function has been present since libpng-0.88, has never
+changed, and is unaffected by conditional compilation macros. It is the
+best choice for use in configure scripts for detecting the presence of any
+libpng version since 0.88. In an autoconf "configure.in" you could use
+
+ AC_CHECK_LIB(png, png_get_io_ptr, ...
+
+XI. Source code repository
+
+Since about February 2009, version 1.2.34, libpng has been under "git" source
+control. The git repository was built from old libpng-x.y.z.tar.gz files
+going back to version 0.70. You can access the git repository (read only)
+at
+
+ git://libpng.git.sourceforge.net/gitroot/libpng
+
+or you can browse it via "gitweb" at
+
+ http://libpng.git.sourceforge.net/git/gitweb.cgi?p=libpng
+
+Patches can be sent to glennrp at users.sourceforge.net or to
+png-mng-implement at lists.sourceforge.net or you can upload them to
+the libpng bug tracker at
+
+ http://libpng.sourceforge.net
+
+XII. Coding style
+
+Our coding style is similar to the "Allman" style, with curly
+braces on separate lines:
+
+ if (condition)
+ {
+ action;
+ }
+
+ else if (another condition)
+ {
+ another action;
+ }
+
+The braces can be omitted from simple one-line actions:
+
+ if (condition)
+ return (0);
+
+We use 3-space indentation, except for continued statements which
+are usually indented the same as the first line of the statement
+plus four more spaces.
+
+For macro definitions we use 2-space indentation, always leaving the "#"
+in the first column.
+
+ #ifndef PNG_NO_FEATURE
+ # ifndef PNG_FEATURE_SUPPORTED
+ # define PNG_FEATURE_SUPPORTED
+ # endif
+ #endif
+
+Comments appear with the leading "/*" at the same indentation as
+the statement that follows the comment:
+
+ /* Single-line comment */
+ statement;
+
+ /* Multiple-line
+ * comment
+ */
+ statement;
+
+Very short comments can be placed at the end of the statement
+to which they pertain:
+
+ statement; /* comment */
+
+We don't use C++ style ("//") comments. We have, however,
+used them in the past in some now-abandoned MMX assembler
+code.
+
+Functions and their curly braces are not indented, and
+exported functions are marked with PNGAPI:
+
+ /* This is a public function that is visible to
+ * application programers. It does thus-and-so.
+ */
+ void PNGAPI
+ png_exported_function(png_ptr, png_info, foo)
+ {
+ body;
+ }
+
+The prototypes for all exported functions appear in png.h,
+above the comment that says
+
+ /* Maintainer: Put new public prototypes here ... */
+
+We mark all non-exported functions with "/* PRIVATE */"":
+
+ void /* PRIVATE */
+ png_non_exported_function(png_ptr, png_info, foo)
+ {
+ body;
+ }
+
+The prototypes for non-exported functions (except for those in
+pngtest) appear in
+pngpriv.h
+above the comment that says
+
+ /* Maintainer: Put new private prototypes here ^ and in libpngpf.3 */
+
+The names of all exported functions and variables begin
+with "png_", and all publicly visible C preprocessor
+macros begin with "PNG_".
+
+We put a space after each comma and after each semicolon
+in "for" statments, and we put spaces before and after each
+C binary operator and after "for" or "while". We don't
+put a space between a typecast and the expression being
+cast, nor do we put one between a function name and the
+left parenthesis that follows it:
+
+ for (i = 2; i > 0; --i)
+ y[i] = a(x) + (int)b;
+
+We prefer #ifdef and #ifndef to #if defined() and if !defined()
+when there is only one macro being tested.
+
+We do not use the TAB character for indentation in the C sources.
+
+Lines do not exceed 80 characters.
+
+Other rules can be inferred by inspecting the libpng source.
+
+XIII. Y2K Compliance in libpng
+
+January 3, 2010
+
+Since the PNG Development group is an ad-hoc body, we can't make
+an official declaration.
+
+This is your unofficial assurance that libpng from version 0.71 and
+upward through 1.4.0 are Y2K compliant. It is my belief that earlier
+versions were also Y2K compliant.
+
+Libpng only has three year fields. One is a 2-byte unsigned integer that
+will hold years up to 65535. The other two hold the date in text
+format, and will hold years up to 9999.
+
+The integer is
+ "png_uint_16 year" in png_time_struct.
+
+The strings are
+ "png_charp time_buffer" in png_struct and
+ "near_time_buffer", which is a local character string in png.c.
+
+There are seven time-related functions:
+
+ png_convert_to_rfc_1123() in png.c
+ (formerly png_convert_to_rfc_1152() in error)
+ png_convert_from_struct_tm() in pngwrite.c, called
+ in pngwrite.c
+ png_convert_from_time_t() in pngwrite.c
+ png_get_tIME() in pngget.c
+ png_handle_tIME() in pngrutil.c, called in pngread.c
+ png_set_tIME() in pngset.c
+ png_write_tIME() in pngwutil.c, called in pngwrite.c
+
+All appear to handle dates properly in a Y2K environment. The
+png_convert_from_time_t() function calls gmtime() to convert from system
+clock time, which returns (year - 1900), which we properly convert to
+the full 4-digit year. There is a possibility that applications using
+libpng are not passing 4-digit years into the png_convert_to_rfc_1123()
+function, or that they are incorrectly passing only a 2-digit year
+instead of "year - 1900" into the png_convert_from_struct_tm() function,
+but this is not under our control. The libpng documentation has always
+stated that it works with 4-digit years, and the APIs have been
+documented as such.
+
+The tIME chunk itself is also Y2K compliant. It uses a 2-byte unsigned
+integer to hold the year, and can hold years as large as 65535.
+
+zlib, upon which libpng depends, is also Y2K compliant. It contains
+no date-related code.
+
+
+ Glenn Randers-Pehrson
+ libpng maintainer
+ PNG Development Group
diff --git a/src/3rdparty/libpng/libpng-config.in b/src/3rdparty/libpng/libpng-config.in
new file mode 100755
index 0000000..2987cef
--- /dev/null
+++ b/src/3rdparty/libpng/libpng-config.in
@@ -0,0 +1,127 @@
+#! /bin/sh
+
+# libpng-config
+# provides configuration info for libpng.
+
+# Copyright (C) 2002, 2004, 2006, 2007 Glenn Randers-Pehrson
+
+# This code is released under the libpng license.
+# For conditions of distribution and use, see the disclaimer
+# and license in png.h
+
+# Modeled after libxml-config.
+
+version="@PNGLIB_VERSION@"
+prefix="@prefix@"
+exec_prefix="@exec_prefix@"
+libdir="@libdir@"
+includedir="@includedir@/libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@"
+libs="-lpng@PNGLIB_MAJOR@@PNGLIB_MINOR@"
+all_libs="-lpng@PNGLIB_MAJOR@@PNGLIB_MINOR@ @LIBS@"
+I_opts="-I${includedir}"
+L_opts="-L${libdir}"
+R_opts=""
+cppflags=""
+ccopts=""
+ldopts=""
+
+usage()
+{
+ cat <<EOF
+Usage: $0 [OPTION] ...
+
+Known values for OPTION are:
+
+ --prefix print libpng prefix
+ --libdir print path to directory containing library
+ --libs print library linking information
+ --ccopts print compiler options
+ --cppflags print pre-processor flags
+ --cflags print preprocessor flags, I_opts, and compiler options
+ --I_opts print "-I" include options
+ --L_opts print linker "-L" flags for dynamic linking
+ --R_opts print dynamic linker "-R" or "-rpath" flags
+ --ldopts print linker options
+ --ldflags print linker flags (ldopts, L_opts, R_opts, and libs)
+ --static revise subsequent outputs for static linking
+ --help print this help and exit
+ --version print version information
+EOF
+
+ exit $1
+}
+
+if test $# -eq 0; then
+ usage 1
+fi
+
+while test $# -gt 0; do
+ case "$1" in
+
+ --prefix)
+ echo ${prefix}
+ ;;
+
+ --version)
+ echo ${version}
+ exit 0
+ ;;
+
+ --help)
+ usage 0
+ ;;
+
+ --ccopts)
+ echo ${ccopts}
+ ;;
+
+ --cppflags)
+ echo ${cppflags}
+ ;;
+
+ --cflags)
+ echo ${I_opts} ${cppflags} ${ccopts}
+ ;;
+
+ --libdir)
+ echo ${libdir}
+ ;;
+
+ --libs)
+ echo ${libs}
+ ;;
+
+ --I_opts)
+ echo ${I_opts}
+ ;;
+
+ --L_opts)
+ echo ${L_opts}
+ ;;
+
+ --R_opts)
+ echo ${R_opts}
+ ;;
+
+ --ldopts)
+ echo ${ldopts}
+ ;;
+
+ --ldflags)
+ echo ${ldopts} ${L_opts} ${R_opts} ${libs}
+ ;;
+
+ --static)
+ R_opts=""
+ libs=${all_libs}
+ ;;
+
+ *)
+ usage
+ exit 1
+ ;;
+ esac
+ shift
+done
+
+exit 0
diff --git a/src/3rdparty/libpng/libpng.3 b/src/3rdparty/libpng/libpng.3
new file mode 100644
index 0000000..6b77fde
--- /dev/null
+++ b/src/3rdparty/libpng/libpng.3
@@ -0,0 +1,4361 @@
+.TH LIBPNG 3 "January 3, 2010"
+.SH NAME
+libpng \- Portable Network Graphics (PNG) Reference Library 1.4.0
+.SH SYNOPSIS
+\fI\fB
+
+\fB#include <png.h>\fP
+
+\fI\fB
+
+\fBpng_uint_32 png_access_version_number \fI(void\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_benign_error (png_structp \fP\fIpng_ptr\fP\fB, png_const_charp \fIerror\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_chunk_benign_error (png_structp \fP\fIpng_ptr\fP\fB, png_const_charp \fIerror\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_chunk_error (png_structp \fP\fIpng_ptr\fP\fB, png_const_charp \fIerror\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_chunk_warning (png_structp \fP\fIpng_ptr\fP\fB, png_const_charp \fImessage\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_convert_from_struct_tm (png_timep \fP\fIptime\fP\fB, struct tm FAR * \fIttime\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_convert_from_time_t (png_timep \fP\fIptime\fP\fB, time_t \fIttime\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_charp png_convert_to_rfc1123 (png_structp \fP\fIpng_ptr\fP\fB, png_timep \fIptime\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_infop png_create_info_struct (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_structp png_create_read_struct (png_const_charp \fP\fIuser_png_ver\fP\fB, png_voidp \fP\fIerror_ptr\fP\fB, png_error_ptr \fP\fIerror_fn\fP\fB, png_error_ptr \fIwarn_fn\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_structp png_create_read_struct_2(png_const_charp \fP\fIuser_png_ver\fP\fB, png_voidp \fP\fIerror_ptr\fP\fB, png_error_ptr \fP\fIerror_fn\fP\fB, png_error_ptr \fP\fIwarn_fn\fP\fB, png_voidp \fP\fImem_ptr\fP\fB, png_malloc_ptr \fP\fImalloc_fn\fP\fB, png_free_ptr \fIfree_fn\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_structp png_create_write_struct (png_const_charp \fP\fIuser_png_ver\fP\fB, png_voidp \fP\fIerror_ptr\fP\fB, png_error_ptr \fP\fIerror_fn\fP\fB, png_error_ptr \fIwarn_fn\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_structp png_create_write_struct_2(png_const_charp \fP\fIuser_png_ver\fP\fB, png_voidp \fP\fIerror_ptr\fP\fB, png_error_ptr \fP\fIerror_fn\fP\fB, png_error_ptr \fP\fIwarn_fn\fP\fB, png_voidp \fP\fImem_ptr\fP\fB, png_malloc_ptr \fP\fImalloc_fn\fP\fB, png_free_ptr \fIfree_fn\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_destroy_info_struct (png_structp \fP\fIpng_ptr\fP\fB, png_infopp \fIinfo_ptr_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_destroy_read_struct (png_structpp \fP\fIpng_ptr_ptr\fP\fB, png_infopp \fP\fIinfo_ptr_ptr\fP\fB, png_infopp \fIend_info_ptr_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_destroy_write_struct (png_structpp \fP\fIpng_ptr_ptr\fP\fB, png_infopp \fIinfo_ptr_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_error (png_structp \fP\fIpng_ptr\fP\fB, png_const_charp \fIerror\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_free (png_structp \fP\fIpng_ptr\fP\fB, png_voidp \fIptr\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_free_chunk_list (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_free_default(png_structp \fP\fIpng_ptr\fP\fB, png_voidp \fIptr\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_free_data (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, int \fInum\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_byte png_get_bit_depth (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_uint_32 png_get_bKGD (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_color_16p \fI*background\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_byte png_get_channels (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_uint_32 png_get_cHRM (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, double \fP\fI*white_x\fP\fB, double \fP\fI*white_y\fP\fB, double \fP\fI*red_x\fP\fB, double \fP\fI*red_y\fP\fB, double \fP\fI*green_x\fP\fB, double \fP\fI*green_y\fP\fB, double \fP\fI*blue_x\fP\fB, double \fI*blue_y\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_uint_32 png_get_cHRM_fixed (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fP\fI*white_x\fP\fB, png_uint_32 \fP\fI*white_y\fP\fB, png_uint_32 \fP\fI*red_x\fP\fB, png_uint_32 \fP\fI*red_y\fP\fB, png_uint_32 \fP\fI*green_x\fP\fB, png_uint_32 \fP\fI*green_y\fP\fB, png_uint_32 \fP\fI*blue_x\fP\fB, png_uint_32 \fI*blue_y\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_uint_32 png_get_chunk_cache_max (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_byte png_get_color_type (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_uint_32 png_get_compression_buffer_size (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_byte png_get_compression_type (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_byte png_get_copyright (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_voidp png_get_error_ptr (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_byte png_get_filter_type (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_uint_32 png_get_gAMA (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, double \fI*file_gamma\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_uint_32 png_get_gAMA_fixed (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fI*int_file_gamma\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_byte png_get_header_ver (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_byte png_get_header_version (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_uint_32 png_get_hIST (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_16p \fI*hist\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_uint_32 png_get_iCCP (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_charpp \fP\fIname\fP\fB, int \fP\fI*compression_type\fP\fB, png_charpp \fP\fIprofile\fP\fB, png_uint_32 \fI*proflen\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_uint_32 png_get_IHDR (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fP\fI*width\fP\fB, png_uint_32 \fP\fI*height\fP\fB, int \fP\fI*bit_depth\fP\fB, int \fP\fI*color_type\fP\fB, int \fP\fI*interlace_type\fP\fB, int \fP\fI*compression_type\fP\fB, int \fI*filter_type\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_uint_32 png_get_image_height (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_uint_32 png_get_image_width (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_int_32 png_get_int_32 (png_bytep \fIbuf\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_byte png_get_interlace_type (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_voidp png_get_io_ptr (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_byte png_get_libpng_ver (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_voidp png_get_mem_ptr(png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_uint_32 png_get_oFFs (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fP\fI*offset_x\fP\fB, png_uint_32 \fP\fI*offset_y\fP\fB, int \fI*unit_type\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_uint_32 png_get_pCAL (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_charp \fP\fI*purpose\fP\fB, png_int_32 \fP\fI*X0\fP\fB, png_int_32 \fP\fI*X1\fP\fB, int \fP\fI*type\fP\fB, int \fP\fI*nparams\fP\fB, png_charp \fP\fI*units\fP\fB, png_charpp \fI*params\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_uint_32 png_get_pHYs (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fP\fI*res_x\fP\fB, png_uint_32 \fP\fI*res_y\fP\fB, int \fI*unit_type\fP\fB);\fP
+
+\fI\fB
+
+\fBfloat png_get_pixel_aspect_ratio (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_uint_32 png_get_pixels_per_meter (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_voidp png_get_progressive_ptr (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_uint_32 png_get_PLTE (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_colorp \fP\fI*palette\fP\fB, int \fI*num_palette\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_byte png_get_rgb_to_gray_status (png_structp \fIpng_ptr)
+
+\fBpng_uint_32 png_get_rowbytes (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_bytepp png_get_rows (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_uint_32 png_get_sBIT (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_color_8p \fI*sig_bit\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_bytep png_get_signature (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_uint_32 png_get_sPLT (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_spalette_p \fI*splt_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_uint_32 png_get_sRGB (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, int \fI*intent\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_uint_32 png_get_text (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_textp \fP\fI*text_ptr\fP\fB, int \fI*num_text\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_uint_32 png_get_tIME (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_timep \fI*mod_time\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_uint_32 png_get_tRNS (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_bytep \fP\fI*trans\fP\fB, int \fP\fI*num_trans\fP\fB, png_color_16p \fI*trans_color\fP\fB);\fP
+
+\fI\fB
+
+\fB/* This function is really an inline macro. \fI*/
+
+\fBpng_uint_16 png_get_uint_16 (png_bytep \fIbuf\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_uint_32 png_get_uint_31 (png_bytep \fIbuf\fP\fB);\fP
+
+\fI\fB
+
+\fB/* This function is really an inline macro. \fI*/
+
+\fBpng_uint_32 png_get_uint_32 (png_bytep \fIbuf\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_uint_32 png_get_unknown_chunks (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_unknown_chunkpp \fIunknowns\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_voidp png_get_user_chunk_ptr (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_uint_32 png_get_user_height_max( png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_voidp png_get_user_transform_ptr (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_uint_32 png_get_user_width_max (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_uint_32 png_get_valid (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIflag\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_int_32 png_get_x_offset_microns (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_int_32 png_get_x_offset_pixels (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_uint_32 png_get_x_pixels_per_meter (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_int_32 png_get_y_offset_microns (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_int_32 png_get_y_offset_pixels (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_uint_32 png_get_y_pixels_per_meter (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBint png_handle_as_unknown (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fIchunk_name\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_init_io (png_structp \fP\fIpng_ptr\fP\fB, FILE \fI*fp\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_voidp png_malloc (png_structp \fP\fIpng_ptr\fP\fB, png_alloc_size_t \fIsize\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_voidp png_malloc_default(png_structp \fP\fIpng_ptr\fP\fB, png_alloc_size_t \fIsize\fP\fB);\fP
+
+\fI\fB
+
+\fBvoidp png_memcpy (png_voidp \fP\fIs1\fP\fB, png_voidp \fP\fIs2\fP\fB, png_size_t \fIsize\fP\fB);\fP
+
+\fI\fB
+
+\fBvoidp png_memset (png_voidp \fP\fIs1\fP\fB, int \fP\fIvalue\fP\fB, png_size_t \fIsize\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_process_data (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_bytep \fP\fIbuffer\fP\fB, png_size_t \fIbuffer_size\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_progressive_combine_row (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIold_row\fP\fB, png_bytep \fInew_row\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_read_end (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_read_image (png_structp \fP\fIpng_ptr\fP\fB, png_bytepp \fIimage\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_read_info (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_read_png (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, int \fP\fItransforms\fP\fB, png_voidp \fIparams\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_read_row (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIrow\fP\fB, png_bytep \fIdisplay_row\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_read_rows (png_structp \fP\fIpng_ptr\fP\fB, png_bytepp \fP\fIrow\fP\fB, png_bytepp \fP\fIdisplay_row\fP\fB, png_uint_32 \fInum_rows\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_read_update_info (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_save_int_32 (png_bytep \fP\fIbuf\fP\fB, png_int_32 \fIi\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_save_uint_16 (png_bytep \fP\fIbuf\fP\fB, unsigned int \fIi\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_save_uint_32 (png_bytep \fP\fIbuf\fP\fB, png_uint_32 \fIi\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_add_alpha (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fP\fIfiller\fP\fB, int \fIflags\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_background (png_structp \fP\fIpng_ptr\fP\fB, png_color_16p \fP\fIbackground_color\fP\fB, int \fP\fIbackground_gamma_code\fP\fB, int \fP\fIneed_expand\fP\fB, double \fIbackground_gamma\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_bgr (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_bKGD (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_color_16p \fIbackground\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_cHRM (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, double \fP\fIwhite_x\fP\fB, double \fP\fIwhite_y\fP\fB, double \fP\fIred_x\fP\fB, double \fP\fIred_y\fP\fB, double \fP\fIgreen_x\fP\fB, double \fP\fIgreen_y\fP\fB, double \fP\fIblue_x\fP\fB, double \fIblue_y\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_cHRM_fixed (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fP\fIwhite_x\fP\fB, png_uint_32 \fP\fIwhite_y\fP\fB, png_uint_32 \fP\fIred_x\fP\fB, png_uint_32 \fP\fIred_y\fP\fB, png_uint_32 \fP\fIgreen_x\fP\fB, png_uint_32 \fP\fIgreen_y\fP\fB, png_uint_32 \fP\fIblue_x\fP\fB, png_uint_32 \fIblue_y\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_chunk_cache_max (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fIuser_chunk_cache_max\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_compression_level (png_structp \fP\fIpng_ptr\fP\fB, int \fIlevel\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_compression_mem_level (png_structp \fP\fIpng_ptr\fP\fB, int \fImem_level\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_compression_method (png_structp \fP\fIpng_ptr\fP\fB, int \fImethod\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_compression_strategy (png_structp \fP\fIpng_ptr\fP\fB, int \fIstrategy\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_compression_window_bits (png_structp \fP\fIpng_ptr\fP\fB, int \fIwindow_bits\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_crc_action (png_structp \fP\fIpng_ptr\fP\fB, int \fP\fIcrit_action\fP\fB, int \fIancil_action\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_dither (png_structp \fP\fIpng_ptr\fP\fB, png_colorp \fP\fIpalette\fP\fB, int \fP\fInum_palette\fP\fB, int \fP\fImaximum_colors\fP\fB, png_uint_16p \fP\fIhistogram\fP\fB, int \fIfull_dither\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_error_fn (png_structp \fP\fIpng_ptr\fP\fB, png_voidp \fP\fIerror_ptr\fP\fB, png_error_ptr \fP\fIerror_fn\fP\fB, png_error_ptr \fIwarning_fn\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_expand (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_expand_gray_1_2_4_to_8(png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_filler (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fP\fIfiller\fP\fB, int \fIflags\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_filter (png_structp \fP\fIpng_ptr\fP\fB, int \fP\fImethod\fP\fB, int \fIfilters\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_filter_heuristics (png_structp \fP\fIpng_ptr\fP\fB, int \fP\fIheuristic_method\fP\fB, int \fP\fInum_weights\fP\fB, png_doublep \fP\fIfilter_weights\fP\fB, png_doublep \fIfilter_costs\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_flush (png_structp \fP\fIpng_ptr\fP\fB, int \fInrows\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_gamma (png_structp \fP\fIpng_ptr\fP\fB, double \fP\fIscreen_gamma\fP\fB, double \fIdefault_file_gamma\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_gAMA (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, double \fIfile_gamma\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_gAMA_fixed (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIfile_gamma\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_gray_1_2_4_to_8(png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_gray_to_rgb (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_hIST (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_16p \fIhist\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_iCCP (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_charp \fP\fIname\fP\fB, int \fP\fIcompression_type\fP\fB, png_charp \fP\fIprofile\fP\fB, png_uint_32 \fIproflen\fP\fB);\fP
+
+\fI\fB
+
+\fBint png_set_interlace_handling (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_invalid (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, int \fImask\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_invert_alpha (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_invert_mono (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_IHDR (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fP\fIwidth\fP\fB, png_uint_32 \fP\fIheight\fP\fB, int \fP\fIbit_depth\fP\fB, int \fP\fIcolor_type\fP\fB, int \fP\fIinterlace_type\fP\fB, int \fP\fIcompression_type\fP\fB, int \fIfilter_type\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_keep_unknown_chunks (png_structp \fP\fIpng_ptr\fP\fB, int \fP\fIkeep\fP\fB, png_bytep \fP\fIchunk_list\fP\fB, int \fInum_chunks\fP\fB);\fP
+
+\fI\fB
+
+\fBjmp_buf* png_set_longjmp_fn (png_structp \fP\fIpng_ptr\fP\fB, png_longjmp_ptr \fP\fIlongjmp_fn\fP\fB, size_t \fIjmp_buf_size\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_mem_fn(png_structp \fP\fIpng_ptr\fP\fB, png_voidp \fP\fImem_ptr\fP\fB, png_malloc_ptr \fP\fImalloc_fn\fP\fB, png_free_ptr \fIfree_fn\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_oFFs (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fP\fIoffset_x\fP\fB, png_uint_32 \fP\fIoffset_y\fP\fB, int \fIunit_type\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_packing (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_packswap (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_palette_to_rgb(png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_pCAL (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_charp \fP\fIpurpose\fP\fB, png_int_32 \fP\fIX0\fP\fB, png_int_32 \fP\fIX1\fP\fB, int \fP\fItype\fP\fB, int \fP\fInparams\fP\fB, png_charp \fP\fIunits\fP\fB, png_charpp \fIparams\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_pHYs (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fP\fIres_x\fP\fB, png_uint_32 \fP\fIres_y\fP\fB, int \fIunit_type\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_progressive_read_fn (png_structp \fP\fIpng_ptr\fP\fB, png_voidp \fP\fIprogressive_ptr\fP\fB, png_progressive_info_ptr \fP\fIinfo_fn\fP\fB, png_progressive_row_ptr \fP\fIrow_fn\fP\fB, png_progressive_end_ptr \fIend_fn\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_PLTE (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_colorp \fP\fIpalette\fP\fB, int \fInum_palette\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_read_fn (png_structp \fP\fIpng_ptr\fP\fB, png_voidp \fP\fIio_ptr\fP\fB, png_rw_ptr \fIread_data_fn\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_read_status_fn (png_structp \fP\fIpng_ptr\fP\fB, png_read_status_ptr \fIread_row_fn\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_read_user_transform_fn (png_structp \fP\fIpng_ptr\fP\fB, png_user_transform_ptr \fIread_user_transform_fn\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_rgb_to_gray (png_structp \fP\fIpng_ptr\fP\fB, int \fP\fIerror_action\fP\fB, double \fP\fIred\fP\fB, double \fIgreen\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_rgb_to_gray_fixed (png_structp \fP\fIpng_ptr\fP\fB, int error_action png_fixed_point \fP\fIred\fP\fB, png_fixed_point \fIgreen\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_rows (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_bytepp \fIrow_pointers\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_sBIT (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_color_8p \fIsig_bit\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_sCAL (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_charp \fP\fIunit\fP\fB, double \fP\fIwidth\fP\fB, double \fIheight\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_shift (png_structp \fP\fIpng_ptr\fP\fB, png_color_8p \fItrue_bits\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_sig_bytes (png_structp \fP\fIpng_ptr\fP\fB, int \fInum_bytes\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_sPLT (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_spalette_p \fP\fIsplt_ptr\fP\fB, int \fInum_spalettes\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_sRGB (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, int \fIintent\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_sRGB_gAMA_and_cHRM (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, int \fIintent\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_strip_16 (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_strip_alpha (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_swap (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_swap_alpha (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_text (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_textp \fP\fItext_ptr\fP\fB, int \fInum_text\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_tIME (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_timep \fImod_time\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_tRNS (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_bytep \fP\fItrans\fP\fB, int \fP\fInum_trans\fP\fB, png_color_16p \fItrans_color\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_tRNS_to_alpha(png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_uint_32 png_set_unknown_chunks (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_unknown_chunkp \fP\fIunknowns\fP\fB, int \fP\fInum\fP\fB, int \fIlocation\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_unknown_chunk_location(png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, int \fP\fIchunk\fP\fB, int \fIlocation\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_read_user_chunk_fn (png_structp \fP\fIpng_ptr\fP\fB, png_voidp \fP\fIuser_chunk_ptr\fP\fB, png_user_chunk_ptr \fIread_user_chunk_fn\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_user_limits (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fP\fIuser_width_max\fP\fB, png_uint_32 \fIuser_height_max\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_user_transform_info (png_structp \fP\fIpng_ptr\fP\fB, png_voidp \fP\fIuser_transform_ptr\fP\fB, int \fP\fIuser_transform_depth\fP\fB, int \fIuser_transform_channels\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_write_fn (png_structp \fP\fIpng_ptr\fP\fB, png_voidp \fP\fIio_ptr\fP\fB, png_rw_ptr \fP\fIwrite_data_fn\fP\fB, png_flush_ptr \fIoutput_flush_fn\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_write_status_fn (png_structp \fP\fIpng_ptr\fP\fB, png_write_status_ptr \fIwrite_row_fn\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_write_user_transform_fn (png_structp \fP\fIpng_ptr\fP\fB, png_user_transform_ptr \fIwrite_user_transform_fn\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_set_compression_buffer_size(png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fIsize\fP\fB);\fP
+
+\fI\fB
+
+\fBint png_sig_cmp (png_bytep \fP\fIsig\fP\fB, png_size_t \fP\fIstart\fP\fB, png_size_t \fInum_to_check\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_start_read_image (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_warning (png_structp \fP\fIpng_ptr\fP\fB, png_const_charp \fImessage\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_write_chunk (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIchunk_name\fP\fB, png_bytep \fP\fIdata\fP\fB, png_size_t \fIlength\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_write_chunk_data (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIdata\fP\fB, png_size_t \fIlength\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_write_chunk_end (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_write_chunk_start (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIchunk_name\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_write_end (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_write_flush (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_write_image (png_structp \fP\fIpng_ptr\fP\fB, png_bytepp \fIimage\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_write_info (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_write_info_before_PLTE (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_write_png (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, int \fP\fItransforms\fP\fB, png_voidp \fIparams\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_write_row (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fIrow\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_write_rows (png_structp \fP\fIpng_ptr\fP\fB, png_bytepp \fP\fIrow\fP\fB, png_uint_32 \fInum_rows\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_write_sig (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBvoidpf png_zalloc (voidpf \fP\fIpng_ptr\fP\fB, uInt \fP\fIitems\fP\fB, uInt \fIsize\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_zfree (voidpf \fP\fIpng_ptr\fP\fB, voidpf \fIptr\fP\fB);\fP
+
+\fI\fB
+
+.SH DESCRIPTION
+The
+.I libpng
+library supports encoding, decoding, and various manipulations of
+the Portable Network Graphics (PNG) format image files. It uses the
+.IR zlib(3)
+compression library.
+Following is a copy of the libpng.txt file that accompanies libpng.
+.SH LIBPNG.TXT
+libpng.txt - A description on how to use and modify libpng
+
+ libpng version 1.4.0 - January 3, 2010
+ Updated and distributed by Glenn Randers-Pehrson
+ <glennrp at users.sourceforge.net>
+ Copyright (c) 1998-2009 Glenn Randers-Pehrson
+
+ This document is released under the libpng license.
+ For conditions of distribution and use, see the disclaimer
+ and license in png.h
+
+ Based on:
+
+ libpng versions 0.97, January 1998, through 1.4.0 - January 3, 2010
+ Updated and distributed by Glenn Randers-Pehrson
+ Copyright (c) 1998-2009 Glenn Randers-Pehrson
+
+ libpng 1.0 beta 6 version 0.96 May 28, 1997
+ Updated and distributed by Andreas Dilger
+ Copyright (c) 1996, 1997 Andreas Dilger
+
+ libpng 1.0 beta 2 - version 0.88 January 26, 1996
+ For conditions of distribution and use, see copyright
+ notice in png.h. Copyright (c) 1995, 1996 Guy Eric
+ Schalnat, Group 42, Inc.
+
+ Updated/rewritten per request in the libpng FAQ
+ Copyright (c) 1995, 1996 Frank J. T. Wojcik
+ December 18, 1995 & January 20, 1996
+
+.SH I. Introduction
+
+This file describes how to use and modify the PNG reference library
+(known as libpng) for your own use. There are five sections to this
+file: introduction, structures, reading, writing, and modification and
+configuration notes for various special platforms. In addition to this
+file, example.c is a good starting point for using the library, as
+it is heavily commented and should include everything most people
+will need. We assume that libpng is already installed; see the
+INSTALL file for instructions on how to install libpng.
+
+For examples of libpng usage, see the files "example.c", "pngtest.c",
+and the files in the "contrib" directory, all of which are included in
+the libpng distribution.
+
+Libpng was written as a companion to the PNG specification, as a way
+of reducing the amount of time and effort it takes to support the PNG
+file format in application programs.
+
+The PNG specification (second edition), November 2003, is available as
+a W3C Recommendation and as an ISO Standard (ISO/IEC 15948:2003 (E)) at
+<http://www.w3.org/TR/2003/REC-PNG-20031110/
+The W3C and ISO documents have identical technical content.
+
+The PNG-1.2 specification is available at
+<http://www.libpng.org/pub/png/documents/>. It is technically equivalent
+to the PNG specification (second edition) but has some additional material.
+
+The PNG-1.0 specification is available
+as RFC 2083 <http://www.libpng.org/pub/png/documents/> and as a
+W3C Recommendation <http://www.w3.org/TR/REC.png.html>.
+
+Some additional chunks are described in the special-purpose public chunks
+documents at <http://www.libpng.org/pub/png/documents/>.
+
+Other information
+about PNG, and the latest version of libpng, can be found at the PNG home
+page, <http://www.libpng.org/pub/png/>.
+
+Most users will not have to modify the library significantly; advanced
+users may want to modify it more. All attempts were made to make it as
+complete as possible, while keeping the code easy to understand.
+Currently, this library only supports C. Support for other languages
+is being considered.
+
+Libpng has been designed to handle multiple sessions at one time,
+to be easily modifiable, to be portable to the vast majority of
+machines (ANSI, K&R, 16-, 32-, and 64-bit) available, and to be easy
+to use. The ultimate goal of libpng is to promote the acceptance of
+the PNG file format in whatever way possible. While there is still
+work to be done (see the TODO file), libpng should cover the
+majority of the needs of its users.
+
+Libpng uses zlib for its compression and decompression of PNG files.
+Further information about zlib, and the latest version of zlib, can
+be found at the zlib home page, <http://www.info-zip.org/pub/infozip/zlib/>.
+The zlib compression utility is a general purpose utility that is
+useful for more than PNG files, and can be used without libpng.
+See the documentation delivered with zlib for more details.
+You can usually find the source files for the zlib utility wherever you
+find the libpng source files.
+
+Libpng is thread safe, provided the threads are using different
+instances of the structures. Each thread should have its own
+png_struct and png_info instances, and thus its own image.
+Libpng does not protect itself against two threads using the
+same instance of a structure.
+
+.SH II. Structures
+
+There are two main structures that are important to libpng, png_struct
+and png_info. The first, png_struct, is an internal structure that
+will not, for the most part, be used by a user except as the first
+variable passed to every libpng function call.
+
+The png_info structure is designed to provide information about the
+PNG file. At one time, the fields of png_info were intended to be
+directly accessible to the user. However, this tended to cause problems
+with applications using dynamically loaded libraries, and as a result
+a set of interface functions for png_info (the png_get_*() and png_set_*()
+functions) was developed. The fields of png_info are still available for
+older applications, but it is suggested that applications use the new
+interfaces if at all possible.
+
+Applications that do make direct access to the members of png_struct (except
+for png_ptr->jmpbuf) must be recompiled whenever the library is updated,
+and applications that make direct access to the members of png_info must
+be recompiled if they were compiled or loaded with libpng version 1.0.6,
+in which the members were in a different order. In version 1.0.7, the
+members of the png_info structure reverted to the old order, as they were
+in versions 0.97c through 1.0.5. Starting with version 2.0.0, both
+structures are going to be hidden, and the contents of the structures will
+only be accessible through the png_get/png_set functions.
+
+The png.h header file is an invaluable reference for programming with libpng.
+And while I'm on the topic, make sure you include the libpng header file:
+
+#include <png.h>
+
+.SH III. Reading
+
+We'll now walk you through the possible functions to call when reading
+in a PNG file sequentially, briefly explaining the syntax and purpose
+of each one. See example.c and png.h for more detail. While
+progressive reading is covered in the next section, you will still
+need some of the functions discussed in this section to read a PNG
+file.
+
+.SS Setup
+
+You will want to do the I/O initialization(*) before you get into libpng,
+so if it doesn't work, you don't have much to undo. Of course, you
+will also want to insure that you are, in fact, dealing with a PNG
+file. Libpng provides a simple check to see if a file is a PNG file.
+To use it, pass in the first 1 to 8 bytes of the file to the function
+png_sig_cmp(), and it will return 0 (false) if the bytes match the
+corresponding bytes of the PNG signature, or nonzero (true) otherwise.
+Of course, the more bytes you pass in, the greater the accuracy of the
+prediction.
+
+If you are intending to keep the file pointer open for use in libpng,
+you must ensure you don't read more than 8 bytes from the beginning
+of the file, and you also have to make a call to png_set_sig_bytes_read()
+with the number of bytes you read from the beginning. Libpng will
+then only check the bytes (if any) that your program didn't read.
+
+(*): If you are not using the standard I/O functions, you will need
+to replace them with custom functions. See the discussion under
+Customizing libpng.
+
+
+ FILE *fp = fopen(file_name, "rb");
+ if (!fp)
+ {
+ return (ERROR);
+ }
+ fread(header, 1, number, fp);
+ is_png = !png_sig_cmp(header, 0, number);
+ if (!is_png)
+ {
+ return (NOT_PNG);
+ }
+
+
+Next, png_struct and png_info need to be allocated and initialized. In
+order to ensure that the size of these structures is correct even with a
+dynamically linked libpng, there are functions to initialize and
+allocate the structures. We also pass the library version, optional
+pointers to error handling functions, and a pointer to a data struct for
+use by the error functions, if necessary (the pointer and functions can
+be NULL if the default error handlers are to be used). See the section
+on Changes to Libpng below regarding the old initialization functions.
+The structure allocation functions quietly return NULL if they fail to
+create the structure, so your application should check for that.
+
+ png_structp png_ptr = png_create_read_struct
+ (PNG_LIBPNG_VER_STRING, (png_voidp)user_error_ptr,
+ user_error_fn, user_warning_fn);
+ if (!png_ptr)
+ return (ERROR);
+
+ png_infop info_ptr = png_create_info_struct(png_ptr);
+ if (!info_ptr)
+ {
+ png_destroy_read_struct(&png_ptr,
+ (png_infopp)NULL, (png_infopp)NULL);
+ return (ERROR);
+ }
+
+ png_infop end_info = png_create_info_struct(png_ptr);
+ if (!end_info)
+ {
+ png_destroy_read_struct(&png_ptr, &info_ptr,
+ (png_infopp)NULL);
+ return (ERROR);
+ }
+
+If you want to use your own memory allocation routines,
+define PNG_USER_MEM_SUPPORTED and use
+png_create_read_struct_2() instead of png_create_read_struct():
+
+ png_structp png_ptr = png_create_read_struct_2
+ (PNG_LIBPNG_VER_STRING, (png_voidp)user_error_ptr,
+ user_error_fn, user_warning_fn, (png_voidp)
+ user_mem_ptr, user_malloc_fn, user_free_fn);
+
+The error handling routines passed to png_create_read_struct()
+and the memory alloc/free routines passed to png_create_struct_2()
+are only necessary if you are not using the libpng supplied error
+handling and memory alloc/free functions.
+
+When libpng encounters an error, it expects to longjmp back
+to your routine. Therefore, you will need to call setjmp and pass
+your png_jmpbuf(png_ptr). If you read the file from different
+routines, you will need to update the jmpbuf field every time you enter
+a new routine that will call a png_*() function.
+
+See your documentation of setjmp/longjmp for your compiler for more
+information on setjmp/longjmp. See the discussion on libpng error
+handling in the Customizing Libpng section below for more information
+on the libpng error handling. If an error occurs, and libpng longjmp's
+back to your setjmp, you will want to call png_destroy_read_struct() to
+free any memory.
+
+ if (setjmp(png_jmpbuf(png_ptr)))
+ {
+ png_destroy_read_struct(&png_ptr, &info_ptr,
+ &end_info);
+ fclose(fp);
+ return (ERROR);
+ }
+
+If you would rather avoid the complexity of setjmp/longjmp issues,
+you can compile libpng with PNG_SETJMP_NOT_SUPPORTED, in which case
+errors will result in a call to PNG_ABORT() which defaults to abort().
+
+Now you need to set up the input code. The default for libpng is to
+use the C function fread(). If you use this, you will need to pass a
+valid FILE * in the function png_init_io(). Be sure that the file is
+opened in binary mode. If you wish to handle reading data in another
+way, you need not call the png_init_io() function, but you must then
+implement the libpng I/O methods discussed in the Customizing Libpng
+section below.
+
+ png_init_io(png_ptr, fp);
+
+If you had previously opened the file and read any of the signature from
+the beginning in order to see if this was a PNG file, you need to let
+libpng know that there are some bytes missing from the start of the file.
+
+ png_set_sig_bytes(png_ptr, number);
+
+.SS Setting up callback code
+
+You can set up a callback function to handle any unknown chunks in the
+input stream. You must supply the function
+
+ read_chunk_callback(png_ptr ptr,
+ png_unknown_chunkp chunk);
+ {
+ /* The unknown chunk structure contains your
+ chunk data, along with similar data for any other
+ unknown chunks: */
+
+ png_byte name[5];
+ png_byte *data;
+ png_size_t size;
+
+ /* Note that libpng has already taken care of
+ the CRC handling */
+
+ /* put your code here. Search for your chunk in the
+ unknown chunk structure, process it, and return one
+ of the following: */
+
+ return (-n); /* chunk had an error */
+ return (0); /* did not recognize */
+ return (n); /* success */
+ }
+
+(You can give your function another name that you like instead of
+"read_chunk_callback")
+
+To inform libpng about your function, use
+
+ png_set_read_user_chunk_fn(png_ptr, user_chunk_ptr,
+ read_chunk_callback);
+
+This names not only the callback function, but also a user pointer that
+you can retrieve with
+
+ png_get_user_chunk_ptr(png_ptr);
+
+If you call the png_set_read_user_chunk_fn() function, then all unknown
+chunks will be saved when read, in case your callback function will need
+one or more of them. This behavior can be changed with the
+png_set_keep_unknown_chunks() function, described below.
+
+At this point, you can set up a callback function that will be
+called after each row has been read, which you can use to control
+a progress meter or the like. It's demonstrated in pngtest.c.
+You must supply a function
+
+ void read_row_callback(png_ptr ptr, png_uint_32 row,
+ int pass);
+ {
+ /* put your code here */
+ }
+
+(You can give it another name that you like instead of "read_row_callback")
+
+To inform libpng about your function, use
+
+ png_set_read_status_fn(png_ptr, read_row_callback);
+
+.SS Unknown-chunk handling
+
+Now you get to set the way the library processes unknown chunks in the
+input PNG stream. Both known and unknown chunks will be read. Normal
+behavior is that known chunks will be parsed into information in
+various info_ptr members while unknown chunks will be discarded. This
+behavior can be wasteful if your application will never use some known
+chunk types. To change this, you can call:
+
+ png_set_keep_unknown_chunks(png_ptr, keep,
+ chunk_list, num_chunks);
+ keep - 0: default unknown chunk handling
+ 1: ignore; do not keep
+ 2: keep only if safe-to-copy
+ 3: keep even if unsafe-to-copy
+ You can use these definitions:
+ PNG_HANDLE_CHUNK_AS_DEFAULT 0
+ PNG_HANDLE_CHUNK_NEVER 1
+ PNG_HANDLE_CHUNK_IF_SAFE 2
+ PNG_HANDLE_CHUNK_ALWAYS 3
+ chunk_list - list of chunks affected (a byte string,
+ five bytes per chunk, NULL or '\0' if
+ num_chunks is 0)
+ num_chunks - number of chunks affected; if 0, all
+ unknown chunks are affected. If nonzero,
+ only the chunks in the list are affected
+
+Unknown chunks declared in this way will be saved as raw data onto a
+list of png_unknown_chunk structures. If a chunk that is normally
+known to libpng is named in the list, it will be handled as unknown,
+according to the "keep" directive. If a chunk is named in successive
+instances of png_set_keep_unknown_chunks(), the final instance will
+take precedence. The IHDR and IEND chunks should not be named in
+chunk_list; if they are, libpng will process them normally anyway.
+
+Here is an example of the usage of png_set_keep_unknown_chunks(),
+where the private "vpAg" chunk will later be processed by a user chunk
+callback function:
+
+ png_byte vpAg[5]={118, 112, 65, 103, (png_byte) '\0'};
+
+ #if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
+ png_byte unused_chunks[]=
+ {
+ 104, 73, 83, 84, (png_byte) '\0', /* hIST */
+ 105, 84, 88, 116, (png_byte) '\0', /* iTXt */
+ 112, 67, 65, 76, (png_byte) '\0', /* pCAL */
+ 115, 67, 65, 76, (png_byte) '\0', /* sCAL */
+ 115, 80, 76, 84, (png_byte) '\0', /* sPLT */
+ 116, 73, 77, 69, (png_byte) '\0', /* tIME */
+ };
+ #endif
+
+ ...
+
+ #if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
+ /* ignore all unknown chunks: */
+ png_set_keep_unknown_chunks(read_ptr, 1, NULL, 0);
+ /* except for vpAg: */
+ png_set_keep_unknown_chunks(read_ptr, 2, vpAg, 1);
+ /* also ignore unused known chunks: */
+ png_set_keep_unknown_chunks(read_ptr, 1, unused_chunks,
+ (int)sizeof(unused_chunks)/5);
+ #endif
+
+.SS User limits
+
+The PNG specification allows the width and height of an image to be as
+large as 2^31-1 (0x7fffffff), or about 2.147 billion rows and columns.
+Since very few applications really need to process such large images,
+we have imposed an arbitrary 1-million limit on rows and columns.
+Larger images will be rejected immediately with a png_error() call. If
+you wish to override this limit, you can use
+
+ png_set_user_limits(png_ptr, width_max, height_max);
+
+to set your own limits, or use width_max = height_max = 0x7fffffffL
+to allow all valid dimensions (libpng may reject some very large images
+anyway because of potential buffer overflow conditions).
+
+You should put this statement after you create the PNG structure and
+before calling png_read_info(), png_read_png(), or png_process_data().
+If you need to retrieve the limits that are being applied, use
+
+ width_max = png_get_user_width_max(png_ptr);
+ height_max = png_get_user_height_max(png_ptr);
+
+The PNG specification sets no limit on the number of ancillary chunks
+allowed in a PNG datastream. You can impose a limit on the total number
+of sPLT, tEXt, iTXt, zTXt, and unknown chunks that will be stored, with
+
+ png_set_chunk_cache_max(png_ptr, user_chunk_cache_max);
+
+where 0x7fffffffL means unlimited. You can retrieve this limit with
+
+ chunk_cache_max = png_get_chunk_cache_max(png_ptr);
+
+This limit also applies to the number of buffers that can be allocated
+by png_decompress_chunk() while decompressing iTXt, zTXt, and iCCP chunks.
+
+.SS The high-level read interface
+
+At this point there are two ways to proceed; through the high-level
+read interface, or through a sequence of low-level read operations.
+You can use the high-level interface if (a) you are willing to read
+the entire image into memory, and (b) the input transformations
+you want to do are limited to the following set:
+
+ PNG_TRANSFORM_IDENTITY No transformation
+ PNG_TRANSFORM_STRIP_16 Strip 16-bit samples to
+ 8 bits
+ PNG_TRANSFORM_STRIP_ALPHA Discard the alpha channel
+ PNG_TRANSFORM_PACKING Expand 1, 2 and 4-bit
+ samples to bytes
+ PNG_TRANSFORM_PACKSWAP Change order of packed
+ pixels to LSB first
+ PNG_TRANSFORM_EXPAND Perform set_expand()
+ PNG_TRANSFORM_INVERT_MONO Invert monochrome images
+ PNG_TRANSFORM_SHIFT Normalize pixels to the
+ sBIT depth
+ PNG_TRANSFORM_BGR Flip RGB to BGR, RGBA
+ to BGRA
+ PNG_TRANSFORM_SWAP_ALPHA Flip RGBA to ARGB or GA
+ to AG
+ PNG_TRANSFORM_INVERT_ALPHA Change alpha from opacity
+ to transparency
+ PNG_TRANSFORM_SWAP_ENDIAN Byte-swap 16-bit samples
+ PNG_TRANSFORM_GRAY_TO_RGB Expand grayscale samples
+ to RGB (or GA to RGBA)
+
+(This excludes setting a background color, doing gamma transformation,
+dithering, and setting filler.) If this is the case, simply do this:
+
+ png_read_png(png_ptr, info_ptr, png_transforms, NULL)
+
+where png_transforms is an integer containing the bitwise OR of some
+set of transformation flags. This call is equivalent to png_read_info(),
+followed the set of transformations indicated by the transform mask,
+then png_read_image(), and finally png_read_end().
+
+(The final parameter of this call is not yet used. Someday it might point
+to transformation parameters required by some future input transform.)
+
+You must use png_transforms and not call any png_set_transform() functions
+when you use png_read_png().
+
+After you have called png_read_png(), you can retrieve the image data
+with
+
+ row_pointers = png_get_rows(png_ptr, info_ptr);
+
+where row_pointers is an array of pointers to the pixel data for each row:
+
+ png_bytep row_pointers[height];
+
+If you know your image size and pixel size ahead of time, you can allocate
+row_pointers prior to calling png_read_png() with
+
+ if (height > PNG_UINT_32_MAX/png_sizeof(png_byte))
+ png_error (png_ptr,
+ "Image is too tall to process in memory");
+ if (width > PNG_UINT_32_MAX/pixel_size)
+ png_error (png_ptr,
+ "Image is too wide to process in memory");
+ row_pointers = png_malloc(png_ptr,
+ height*png_sizeof(png_bytep));
+ for (int i=0; i<height, i++)
+ row_pointers[i]=NULL; /* security precaution */
+ for (int i=0; i<height, i++)
+ row_pointers[i]=png_malloc(png_ptr,
+ width*pixel_size);
+ png_set_rows(png_ptr, info_ptr, &row_pointers);
+
+Alternatively you could allocate your image in one big block and define
+row_pointers[i] to point into the proper places in your block.
+
+If you use png_set_rows(), the application is responsible for freeing
+row_pointers (and row_pointers[i], if they were separately allocated).
+
+If you don't allocate row_pointers ahead of time, png_read_png() will
+do it, and it'll be free'ed when you call png_destroy_*().
+
+.SS The low-level read interface
+
+If you are going the low-level route, you are now ready to read all
+the file information up to the actual image data. You do this with a
+call to png_read_info().
+
+ png_read_info(png_ptr, info_ptr);
+
+This will process all chunks up to but not including the image data.
+
+.SS Querying the info structure
+
+Functions are used to get the information from the info_ptr once it
+has been read. Note that these fields may not be completely filled
+in until png_read_end() has read the chunk data following the image.
+
+ png_get_IHDR(png_ptr, info_ptr, &width, &height,
+ &bit_depth, &color_type, &interlace_type,
+ &compression_type, &filter_method);
+
+ width - holds the width of the image
+ in pixels (up to 2^31).
+ height - holds the height of the image
+ in pixels (up to 2^31).
+ bit_depth - holds the bit depth of one of the
+ image channels. (valid values are
+ 1, 2, 4, 8, 16 and depend also on
+ the color_type. See also
+ significant bits (sBIT) below).
+ color_type - describes which color/alpha channels
+ are present.
+ PNG_COLOR_TYPE_GRAY
+ (bit depths 1, 2, 4, 8, 16)
+ PNG_COLOR_TYPE_GRAY_ALPHA
+ (bit depths 8, 16)
+ PNG_COLOR_TYPE_PALETTE
+ (bit depths 1, 2, 4, 8)
+ PNG_COLOR_TYPE_RGB
+ (bit_depths 8, 16)
+ PNG_COLOR_TYPE_RGB_ALPHA
+ (bit_depths 8, 16)
+
+ PNG_COLOR_MASK_PALETTE
+ PNG_COLOR_MASK_COLOR
+ PNG_COLOR_MASK_ALPHA
+
+ filter_method - (must be PNG_FILTER_TYPE_BASE
+ for PNG 1.0, and can also be
+ PNG_INTRAPIXEL_DIFFERENCING if
+ the PNG datastream is embedded in
+ a MNG-1.0 datastream)
+ compression_type - (must be PNG_COMPRESSION_TYPE_BASE
+ for PNG 1.0)
+ interlace_type - (PNG_INTERLACE_NONE or
+ PNG_INTERLACE_ADAM7)
+
+ Any or all of interlace_type, compression_type, or
+ filter_method can be NULL if you are
+ not interested in their values.
+
+ Note that png_get_IHDR() returns 32-bit data into
+ the application's width and height variables.
+ This is an unsafe situation if these are 16-bit
+ variables. In such situations, the
+ png_get_image_width() and png_get_image_height()
+ functions described below are safer.
+
+ width = png_get_image_width(png_ptr,
+ info_ptr);
+ height = png_get_image_height(png_ptr,
+ info_ptr);
+ bit_depth = png_get_bit_depth(png_ptr,
+ info_ptr);
+ color_type = png_get_color_type(png_ptr,
+ info_ptr);
+ filter_method = png_get_filter_type(png_ptr,
+ info_ptr);
+ compression_type = png_get_compression_type(png_ptr,
+ info_ptr);
+ interlace_type = png_get_interlace_type(png_ptr,
+ info_ptr);
+
+ channels = png_get_channels(png_ptr, info_ptr);
+ channels - number of channels of info for the
+ color type (valid values are 1 (GRAY,
+ PALETTE), 2 (GRAY_ALPHA), 3 (RGB),
+ 4 (RGB_ALPHA or RGB + filler byte))
+ rowbytes = png_get_rowbytes(png_ptr, info_ptr);
+ rowbytes - number of bytes needed to hold a row
+
+ signature = png_get_signature(png_ptr, info_ptr);
+ signature - holds the signature read from the
+ file (if any). The data is kept in
+ the same offset it would be if the
+ whole signature were read (i.e. if an
+ application had already read in 4
+ bytes of signature before starting
+ libpng, the remaining 4 bytes would
+ be in signature[4] through signature[7]
+ (see png_set_sig_bytes())).
+
+These are also important, but their validity depends on whether the chunk
+has been read. The png_get_valid(png_ptr, info_ptr, PNG_INFO_<chunk>) and
+png_get_<chunk>(png_ptr, info_ptr, ...) functions return non-zero if the
+data has been read, or zero if it is missing. The parameters to the
+png_get_<chunk> are set directly if they are simple data types, or a
+pointer into the info_ptr is returned for any complex types.
+
+ png_get_PLTE(png_ptr, info_ptr, &palette,
+ &num_palette);
+ palette - the palette for the file
+ (array of png_color)
+ num_palette - number of entries in the palette
+
+ png_get_gAMA(png_ptr, info_ptr, &gamma);
+ gamma - the gamma the file is written
+ at (PNG_INFO_gAMA)
+
+ png_get_sRGB(png_ptr, info_ptr, &srgb_intent);
+ srgb_intent - the rendering intent (PNG_INFO_sRGB)
+ The presence of the sRGB chunk
+ means that the pixel data is in the
+ sRGB color space. This chunk also
+ implies specific values of gAMA and
+ cHRM.
+
+ png_get_iCCP(png_ptr, info_ptr, &name,
+ &compression_type, &profile, &proflen);
+ name - The profile name.
+ compression - The compression type; always
+ PNG_COMPRESSION_TYPE_BASE for PNG 1.0.
+ You may give NULL to this argument to
+ ignore it.
+ profile - International Color Consortium color
+ profile data. May contain NULs.
+ proflen - length of profile data in bytes.
+
+ png_get_sBIT(png_ptr, info_ptr, &sig_bit);
+ sig_bit - the number of significant bits for
+ (PNG_INFO_sBIT) each of the gray,
+ red, green, and blue channels,
+ whichever are appropriate for the
+ given color type (png_color_16)
+
+ png_get_tRNS(png_ptr, info_ptr, &trans_alpha,
+ &num_trans, &trans_color);
+ trans_alpha - array of alpha (transparency)
+ entries for palette (PNG_INFO_tRNS)
+ trans_color - graylevel or color sample values of
+ the single transparent color for
+ non-paletted images (PNG_INFO_tRNS)
+ num_trans - number of transparent entries
+ (PNG_INFO_tRNS)
+
+ png_get_hIST(png_ptr, info_ptr, &hist);
+ (PNG_INFO_hIST)
+ hist - histogram of palette (array of
+ png_uint_16)
+
+ png_get_tIME(png_ptr, info_ptr, &mod_time);
+ mod_time - time image was last modified
+ (PNG_VALID_tIME)
+
+ png_get_bKGD(png_ptr, info_ptr, &background);
+ background - background color (PNG_VALID_bKGD)
+ valid 16-bit red, green and blue
+ values, regardless of color_type
+
+ num_comments = png_get_text(png_ptr, info_ptr,
+ &text_ptr, &num_text);
+ num_comments - number of comments
+ text_ptr - array of png_text holding image
+ comments
+ text_ptr[i].compression - type of compression used
+ on "text" PNG_TEXT_COMPRESSION_NONE
+ PNG_TEXT_COMPRESSION_zTXt
+ PNG_ITXT_COMPRESSION_NONE
+ PNG_ITXT_COMPRESSION_zTXt
+ text_ptr[i].key - keyword for comment. Must contain
+ 1-79 characters.
+ text_ptr[i].text - text comments for current
+ keyword. Can be empty.
+ text_ptr[i].text_length - length of text string,
+ after decompression, 0 for iTXt
+ text_ptr[i].itxt_length - length of itxt string,
+ after decompression, 0 for tEXt/zTXt
+ text_ptr[i].lang - language of comment (empty
+ string for unknown).
+ text_ptr[i].lang_key - keyword in UTF-8
+ (empty string for unknown).
+ Note that the itxt_length, lang, and lang_key
+ members of the text_ptr structure only exist
+ when the library is built with iTXt chunk support.
+
+ num_text - number of comments (same as
+ num_comments; you can put NULL here
+ to avoid the duplication)
+ Note while png_set_text() will accept text, language,
+ and translated keywords that can be NULL pointers, the
+ structure returned by png_get_text will always contain
+ regular zero-terminated C strings. They might be
+ empty strings but they will never be NULL pointers.
+
+ num_spalettes = png_get_sPLT(png_ptr, info_ptr,
+ &palette_ptr);
+ palette_ptr - array of palette structures holding
+ contents of one or more sPLT chunks
+ read.
+ num_spalettes - number of sPLT chunks read.
+
+ png_get_oFFs(png_ptr, info_ptr, &offset_x, &offset_y,
+ &unit_type);
+ offset_x - positive offset from the left edge
+ of the screen
+ offset_y - positive offset from the top edge
+ of the screen
+ unit_type - PNG_OFFSET_PIXEL, PNG_OFFSET_MICROMETER
+
+ png_get_pHYs(png_ptr, info_ptr, &res_x, &res_y,
+ &unit_type);
+ res_x - pixels/unit physical resolution in
+ x direction
+ res_y - pixels/unit physical resolution in
+ x direction
+ unit_type - PNG_RESOLUTION_UNKNOWN,
+ PNG_RESOLUTION_METER
+
+ png_get_sCAL(png_ptr, info_ptr, &unit, &width,
+ &height)
+ unit - physical scale units (an integer)
+ width - width of a pixel in physical scale units
+ height - height of a pixel in physical scale units
+ (width and height are doubles)
+
+ png_get_sCAL_s(png_ptr, info_ptr, &unit, &width,
+ &height)
+ unit - physical scale units (an integer)
+ width - width of a pixel in physical scale units
+ height - height of a pixel in physical scale units
+ (width and height are strings like "2.54")
+
+ num_unknown_chunks = png_get_unknown_chunks(png_ptr,
+ info_ptr, &unknowns)
+ unknowns - array of png_unknown_chunk
+ structures holding unknown chunks
+ unknowns[i].name - name of unknown chunk
+ unknowns[i].data - data of unknown chunk
+ unknowns[i].size - size of unknown chunk's data
+ unknowns[i].location - position of chunk in file
+
+ The value of "i" corresponds to the order in which the
+ chunks were read from the PNG file or inserted with the
+ png_set_unknown_chunks() function.
+
+The data from the pHYs chunk can be retrieved in several convenient
+forms:
+
+ res_x = png_get_x_pixels_per_meter(png_ptr,
+ info_ptr)
+ res_y = png_get_y_pixels_per_meter(png_ptr,
+ info_ptr)
+ res_x_and_y = png_get_pixels_per_meter(png_ptr,
+ info_ptr)
+ res_x = png_get_x_pixels_per_inch(png_ptr,
+ info_ptr)
+ res_y = png_get_y_pixels_per_inch(png_ptr,
+ info_ptr)
+ res_x_and_y = png_get_pixels_per_inch(png_ptr,
+ info_ptr)
+ aspect_ratio = png_get_pixel_aspect_ratio(png_ptr,
+ info_ptr)
+
+ (Each of these returns 0 [signifying "unknown"] if
+ the data is not present or if res_x is 0;
+ res_x_and_y is 0 if res_x != res_y)
+
+The data from the oFFs chunk can be retrieved in several convenient
+forms:
+
+ x_offset = png_get_x_offset_microns(png_ptr, info_ptr);
+ y_offset = png_get_y_offset_microns(png_ptr, info_ptr);
+ x_offset = png_get_x_offset_inches(png_ptr, info_ptr);
+ y_offset = png_get_y_offset_inches(png_ptr, info_ptr);
+
+ (Each of these returns 0 [signifying "unknown" if both
+ x and y are 0] if the data is not present or if the
+ chunk is present but the unit is the pixel)
+
+For more information, see the png_info definition in png.h and the
+PNG specification for chunk contents. Be careful with trusting
+rowbytes, as some of the transformations could increase the space
+needed to hold a row (expand, filler, gray_to_rgb, etc.).
+See png_read_update_info(), below.
+
+A quick word about text_ptr and num_text. PNG stores comments in
+keyword/text pairs, one pair per chunk, with no limit on the number
+of text chunks, and a 2^31 byte limit on their size. While there are
+suggested keywords, there is no requirement to restrict the use to these
+strings. It is strongly suggested that keywords and text be sensible
+to humans (that's the point), so don't use abbreviations. Non-printing
+symbols are not allowed. See the PNG specification for more details.
+There is also no requirement to have text after the keyword.
+
+Keywords should be limited to 79 Latin-1 characters without leading or
+trailing spaces, but non-consecutive spaces are allowed within the
+keyword. It is possible to have the same keyword any number of times.
+The text_ptr is an array of png_text structures, each holding a
+pointer to a language string, a pointer to a keyword and a pointer to
+a text string. The text string, language code, and translated
+keyword may be empty or NULL pointers. The keyword/text
+pairs are put into the array in the order that they are received.
+However, some or all of the text chunks may be after the image, so, to
+make sure you have read all the text chunks, don't mess with these
+until after you read the stuff after the image. This will be
+mentioned again below in the discussion that goes with png_read_end().
+
+.SS Input transformations
+
+After you've read the header information, you can set up the library
+to handle any special transformations of the image data. The various
+ways to transform the data will be described in the order that they
+should occur. This is important, as some of these change the color
+type and/or bit depth of the data, and some others only work on
+certain color types and bit depths. Even though each transformation
+checks to see if it has data that it can do something with, you should
+make sure to only enable a transformation if it will be valid for the
+data. For example, don't swap red and blue on grayscale data.
+
+The colors used for the background and transparency values should be
+supplied in the same format/depth as the current image data. They
+are stored in the same format/depth as the image data in a bKGD or tRNS
+chunk, so this is what libpng expects for this data. The colors are
+transformed to keep in sync with the image data when an application
+calls the png_read_update_info() routine (see below).
+
+Data will be decoded into the supplied row buffers packed into bytes
+unless the library has been told to transform it into another format.
+For example, 4 bit/pixel paletted or grayscale data will be returned
+2 pixels/byte with the leftmost pixel in the high-order bits of the
+byte, unless png_set_packing() is called. 8-bit RGB data will be stored
+in RGB RGB RGB format unless png_set_filler() or png_set_add_alpha()
+is called to insert filler bytes, either before or after each RGB triplet.
+16-bit RGB data will be returned RRGGBB RRGGBB, with the most significant
+byte of the color value first, unless png_set_strip_16() is called to
+transform it to regular RGB RGB triplets, or png_set_filler() or
+png_set_add alpha() is called to insert filler bytes, either before or
+after each RRGGBB triplet. Similarly, 8-bit or 16-bit grayscale data can
+be modified with
+png_set_filler(), png_set_add_alpha(), or png_set_strip_16().
+
+The following code transforms grayscale images of less than 8 to 8 bits,
+changes paletted images to RGB, and adds a full alpha channel if there is
+transparency information in a tRNS chunk. This is most useful on
+grayscale images with bit depths of 2 or 4 or if there is a multiple-image
+viewing application that wishes to treat all images in the same way.
+
+ if (color_type == PNG_COLOR_TYPE_PALETTE)
+ png_set_palette_to_rgb(png_ptr);
+
+ if (color_type == PNG_COLOR_TYPE_GRAY &&
+ bit_depth < 8) png_set_expand_gray_1_2_4_to_8(png_ptr);
+
+ if (png_get_valid(png_ptr, info_ptr,
+ PNG_INFO_tRNS)) png_set_tRNS_to_alpha(png_ptr);
+
+These three functions are actually aliases for png_set_expand(), added
+in libpng version 1.0.4, with the function names expanded to improve code
+readability. In some future version they may actually do different
+things.
+
+As of libpng version 1.2.9, png_set_expand_gray_1_2_4_to_8() was
+added. It expands the sample depth without changing tRNS to alpha.
+
+As of libpng version 1.4.0, not all possible expansions are supported.
+
+In the following table, the 01 means grayscale with depth<8, 31 means
+indexed with depth<8, other numerals represent the color type, "T" means
+the tRNS chunk is present, A means an alpha channel is present, and O
+means tRNS or alpha is present but all pixels in the image are opaque.
+
+ FROM 01 31 0 0T 0O 2 2T 2O 3 3T 3O 4A 4O 6A 6O
+ TO
+ 01 -
+ 31 -
+ 0 1 -
+ 0T -
+ 0O -
+ 2 GX -
+ 2T -
+ 2O -
+ 3 1 -
+ 3T -
+ 3O -
+ 4A T -
+ 4O -
+ 6A GX TX TX -
+ 6O GX TX -
+
+Within the matrix,
+ "-" means the transformation is not supported.
+ "X" means the transformation is obtained by png_set_expand().
+ "1" means the transformation is obtained by
+ png_set_expand_gray_1_2_4_to_8
+ "G" means the transformation is obtained by
+ png_set_gray_to_rgb().
+ "P" means the transformation is obtained by
+ png_set_expand_palette_to_rgb().
+ "T" means the transformation is obtained by
+ png_set_tRNS_to_alpha().
+
+PNG can have files with 16 bits per channel. If you only can handle
+8 bits per channel, this will strip the pixels down to 8 bit.
+
+ if (bit_depth == 16)
+ png_set_strip_16(png_ptr);
+
+If, for some reason, you don't need the alpha channel on an image,
+and you want to remove it rather than combining it with the background
+(but the image author certainly had in mind that you *would* combine
+it with the background, so that's what you should probably do):
+
+ if (color_type & PNG_COLOR_MASK_ALPHA)
+ png_set_strip_alpha(png_ptr);
+
+In PNG files, the alpha channel in an image
+is the level of opacity. If you need the alpha channel in an image to
+be the level of transparency instead of opacity, you can invert the
+alpha channel (or the tRNS chunk data) after it's read, so that 0 is
+fully opaque and 255 (in 8-bit or paletted images) or 65535 (in 16-bit
+images) is fully transparent, with
+
+ png_set_invert_alpha(png_ptr);
+
+PNG files pack pixels of bit depths 1, 2, and 4 into bytes as small as
+they can, resulting in, for example, 8 pixels per byte for 1 bit
+files. This code expands to 1 pixel per byte without changing the
+values of the pixels:
+
+ if (bit_depth < 8)
+ png_set_packing(png_ptr);
+
+PNG files have possible bit depths of 1, 2, 4, 8, and 16. All pixels
+stored in a PNG image have been "scaled" or "shifted" up to the next
+higher possible bit depth (e.g. from 5 bits/sample in the range [0,31]
+to 8 bits/sample in the range [0, 255]). However, it is also possible
+to convert the PNG pixel data back to the original bit depth of the
+image. This call reduces the pixels back down to the original bit depth:
+
+ png_color_8p sig_bit;
+
+ if (png_get_sBIT(png_ptr, info_ptr, &sig_bit))
+ png_set_shift(png_ptr, sig_bit);
+
+PNG files store 3-color pixels in red, green, blue order. This code
+changes the storage of the pixels to blue, green, red:
+
+ if (color_type == PNG_COLOR_TYPE_RGB ||
+ color_type == PNG_COLOR_TYPE_RGB_ALPHA)
+ png_set_bgr(png_ptr);
+
+PNG files store RGB pixels packed into 3 or 6 bytes. This code expands them
+into 4 or 8 bytes for windowing systems that need them in this format:
+
+ if (color_type == PNG_COLOR_TYPE_RGB)
+ png_set_filler(png_ptr, filler, PNG_FILLER_BEFORE);
+
+where "filler" is the 8 or 16-bit number to fill with, and the location is
+either PNG_FILLER_BEFORE or PNG_FILLER_AFTER, depending upon whether
+you want the filler before the RGB or after. This transformation
+does not affect images that already have full alpha channels. To add an
+opaque alpha channel, use filler=0xff or 0xffff and PNG_FILLER_AFTER which
+will generate RGBA pixels.
+
+Note that png_set_filler() does not change the color type. If you want
+to do that, you can add a true alpha channel with
+
+ if (color_type == PNG_COLOR_TYPE_RGB ||
+ color_type == PNG_COLOR_TYPE_GRAY)
+ png_set_add_alpha(png_ptr, filler, PNG_FILLER_AFTER);
+
+where "filler" contains the alpha value to assign to each pixel.
+This function was added in libpng-1.2.7.
+
+If you are reading an image with an alpha channel, and you need the
+data as ARGB instead of the normal PNG format RGBA:
+
+ if (color_type == PNG_COLOR_TYPE_RGB_ALPHA)
+ png_set_swap_alpha(png_ptr);
+
+For some uses, you may want a grayscale image to be represented as
+RGB. This code will do that conversion:
+
+ if (color_type == PNG_COLOR_TYPE_GRAY ||
+ color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
+ png_set_gray_to_rgb(png_ptr);
+
+Conversely, you can convert an RGB or RGBA image to grayscale or grayscale
+with alpha.
+
+ if (color_type == PNG_COLOR_TYPE_RGB ||
+ color_type == PNG_COLOR_TYPE_RGB_ALPHA)
+ png_set_rgb_to_gray_fixed(png_ptr, error_action,
+ int red_weight, int green_weight);
+
+ error_action = 1: silently do the conversion
+ error_action = 2: issue a warning if the original
+ image has any pixel where
+ red != green or red != blue
+ error_action = 3: issue an error and abort the
+ conversion if the original
+ image has any pixel where
+ red != green or red != blue
+
+ red_weight: weight of red component times 100000
+ green_weight: weight of green component times 100000
+ If either weight is negative, default
+ weights (21268, 71514) are used.
+
+If you have set error_action = 1 or 2, you can
+later check whether the image really was gray, after processing
+the image rows, with the png_get_rgb_to_gray_status(png_ptr) function.
+It will return a png_byte that is zero if the image was gray or
+1 if there were any non-gray pixels. bKGD and sBIT data
+will be silently converted to grayscale, using the green channel
+data, regardless of the error_action setting.
+
+With red_weight+green_weight<=100000,
+the normalized graylevel is computed:
+
+ int rw = red_weight * 65536;
+ int gw = green_weight * 65536;
+ int bw = 65536 - (rw + gw);
+ gray = (rw*red + gw*green + bw*blue)/65536;
+
+The default values approximate those recommended in the Charles
+Poynton's Color FAQ, <http://www.inforamp.net/~poynton/>
+Copyright (c) 1998-01-04 Charles Poynton <poynton at inforamp.net>
+
+ Y = 0.212671 * R + 0.715160 * G + 0.072169 * B
+
+Libpng approximates this with
+
+ Y = 0.21268 * R + 0.7151 * G + 0.07217 * B
+
+which can be expressed with integers as
+
+ Y = (6969 * R + 23434 * G + 2365 * B)/32768
+
+The calculation is done in a linear colorspace, if the image gamma
+is known.
+
+If you have a grayscale and you are using png_set_expand_depth(),
+png_set_expand(), or png_set_gray_to_rgb to change to truecolor or to
+a higher bit-depth, you must either supply the background color as a gray
+value at the original file bit-depth (need_expand = 1) or else supply the
+background color as an RGB triplet at the final, expanded bit depth
+(need_expand = 0). Similarly, if you are reading a paletted image, you
+must either supply the background color as a palette index (need_expand = 1)
+or as an RGB triplet that may or may not be in the palette (need_expand = 0).
+
+ png_color_16 my_background;
+ png_color_16p image_background;
+
+ if (png_get_bKGD(png_ptr, info_ptr, &image_background))
+ png_set_background(png_ptr, image_background,
+ PNG_BACKGROUND_GAMMA_FILE, 1, 1.0);
+ else
+ png_set_background(png_ptr, &my_background,
+ PNG_BACKGROUND_GAMMA_SCREEN, 0, 1.0);
+
+The png_set_background() function tells libpng to composite images
+with alpha or simple transparency against the supplied background
+color. If the PNG file contains a bKGD chunk (PNG_INFO_bKGD valid),
+you may use this color, or supply another color more suitable for
+the current display (e.g., the background color from a web page). You
+need to tell libpng whether the color is in the gamma space of the
+display (PNG_BACKGROUND_GAMMA_SCREEN for colors you supply), the file
+(PNG_BACKGROUND_GAMMA_FILE for colors from the bKGD chunk), or one
+that is neither of these gammas (PNG_BACKGROUND_GAMMA_UNIQUE - I don't
+know why anyone would use this, but it's here).
+
+To properly display PNG images on any kind of system, the application needs
+to know what the display gamma is. Ideally, the user will know this, and
+the application will allow them to set it. One method of allowing the user
+to set the display gamma separately for each system is to check for a
+SCREEN_GAMMA or DISPLAY_GAMMA environment variable, which will hopefully be
+correctly set.
+
+Note that display_gamma is the overall gamma correction required to produce
+pleasing results, which depends on the lighting conditions in the surrounding
+environment. In a dim or brightly lit room, no compensation other than
+the physical gamma exponent of the monitor is needed, while in a dark room
+a slightly smaller exponent is better.
+
+ double gamma, screen_gamma;
+
+ if (/* We have a user-defined screen
+ gamma value */)
+ {
+ screen_gamma = user_defined_screen_gamma;
+ }
+ /* One way that applications can share the same
+ screen gamma value */
+ else if ((gamma_str = getenv("SCREEN_GAMMA"))
+ != NULL)
+ {
+ screen_gamma = (double)atof(gamma_str);
+ }
+ /* If we don't have another value */
+ else
+ {
+ screen_gamma = 2.2; /* A good guess for a
+ PC monitor in a bright office or a dim room */
+ screen_gamma = 2.0; /* A good guess for a
+ PC monitor in a dark room */
+ screen_gamma = 1.7 or 1.0; /* A good
+ guess for Mac systems */
+ }
+
+The png_set_gamma() function handles gamma transformations of the data.
+Pass both the file gamma and the current screen_gamma. If the file does
+not have a gamma value, you can pass one anyway if you have an idea what
+it is (usually 0.45455 is a good guess for GIF images on PCs). Note
+that file gammas are inverted from screen gammas. See the discussions
+on gamma in the PNG specification for an excellent description of what
+gamma is, and why all applications should support it. It is strongly
+recommended that PNG viewers support gamma correction.
+
+ if (png_get_gAMA(png_ptr, info_ptr, &gamma))
+ png_set_gamma(png_ptr, screen_gamma, gamma);
+ else
+ png_set_gamma(png_ptr, screen_gamma, 0.45455);
+
+PNG files describe monochrome as black being zero and white being one.
+The following code will reverse this (make black be one and white be
+zero):
+
+ if (bit_depth == 1 && color_type == PNG_COLOR_TYPE_GRAY)
+ png_set_invert_mono(png_ptr);
+
+This function can also be used to invert grayscale and gray-alpha images:
+
+ if (color_type == PNG_COLOR_TYPE_GRAY ||
+ color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
+ png_set_invert_mono(png_ptr);
+
+PNG files store 16 bit pixels in network byte order (big-endian,
+ie. most significant bits first). This code changes the storage to the
+other way (little-endian, i.e. least significant bits first, the
+way PCs store them):
+
+ if (bit_depth == 16)
+ png_set_swap(png_ptr);
+
+If you are using packed-pixel images (1, 2, or 4 bits/pixel), and you
+need to change the order the pixels are packed into bytes, you can use:
+
+ if (bit_depth < 8)
+ png_set_packswap(png_ptr);
+
+Finally, you can write your own transformation function if none of
+the existing ones meets your needs. This is done by setting a callback
+with
+
+ png_set_read_user_transform_fn(png_ptr,
+ read_transform_fn);
+
+You must supply the function
+
+ void read_transform_fn(png_ptr ptr, row_info_ptr
+ row_info, png_bytep data)
+
+See pngtest.c for a working example. Your function will be called
+after all of the other transformations have been processed.
+
+You can also set up a pointer to a user structure for use by your
+callback function, and you can inform libpng that your transform
+function will change the number of channels or bit depth with the
+function
+
+ png_set_user_transform_info(png_ptr, user_ptr,
+ user_depth, user_channels);
+
+The user's application, not libpng, is responsible for allocating and
+freeing any memory required for the user structure.
+
+You can retrieve the pointer via the function
+png_get_user_transform_ptr(). For example:
+
+ voidp read_user_transform_ptr =
+ png_get_user_transform_ptr(png_ptr);
+
+The last thing to handle is interlacing; this is covered in detail below,
+but you must call the function here if you want libpng to handle expansion
+of the interlaced image.
+
+ number_of_passes = png_set_interlace_handling(png_ptr);
+
+After setting the transformations, libpng can update your png_info
+structure to reflect any transformations you've requested with this
+call. This is most useful to update the info structure's rowbytes
+field so you can use it to allocate your image memory. This function
+will also update your palette with the correct screen_gamma and
+background if these have been given with the calls above.
+
+ png_read_update_info(png_ptr, info_ptr);
+
+After you call png_read_update_info(), you can allocate any
+memory you need to hold the image. The row data is simply
+raw byte data for all forms of images. As the actual allocation
+varies among applications, no example will be given. If you
+are allocating one large chunk, you will need to build an
+array of pointers to each row, as it will be needed for some
+of the functions below.
+
+.SS Reading image data
+
+After you've allocated memory, you can read the image data.
+The simplest way to do this is in one function call. If you are
+allocating enough memory to hold the whole image, you can just
+call png_read_image() and libpng will read in all the image data
+and put it in the memory area supplied. You will need to pass in
+an array of pointers to each row.
+
+This function automatically handles interlacing, so you don't need
+to call png_set_interlace_handling() or call this function multiple
+times, or any of that other stuff necessary with png_read_rows().
+
+ png_read_image(png_ptr, row_pointers);
+
+where row_pointers is:
+
+ png_bytep row_pointers[height];
+
+You can point to void or char or whatever you use for pixels.
+
+If you don't want to read in the whole image at once, you can
+use png_read_rows() instead. If there is no interlacing (check
+interlace_type == PNG_INTERLACE_NONE), this is simple:
+
+ png_read_rows(png_ptr, row_pointers, NULL,
+ number_of_rows);
+
+where row_pointers is the same as in the png_read_image() call.
+
+If you are doing this just one row at a time, you can do this with
+a single row_pointer instead of an array of row_pointers:
+
+ png_bytep row_pointer = row;
+ png_read_row(png_ptr, row_pointer, NULL);
+
+If the file is interlaced (interlace_type != 0 in the IHDR chunk), things
+get somewhat harder. The only current (PNG Specification version 1.2)
+interlacing type for PNG is (interlace_type == PNG_INTERLACE_ADAM7)
+is a somewhat complicated 2D interlace scheme, known as Adam7, that
+breaks down an image into seven smaller images of varying size, based
+on an 8x8 grid.
+
+libpng can fill out those images or it can give them to you "as is".
+If you want them filled out, there are two ways to do that. The one
+mentioned in the PNG specification is to expand each pixel to cover
+those pixels that have not been read yet (the "rectangle" method).
+This results in a blocky image for the first pass, which gradually
+smooths out as more pixels are read. The other method is the "sparkle"
+method, where pixels are drawn only in their final locations, with the
+rest of the image remaining whatever colors they were initialized to
+before the start of the read. The first method usually looks better,
+but tends to be slower, as there are more pixels to put in the rows.
+
+If you don't want libpng to handle the interlacing details, just call
+png_read_rows() seven times to read in all seven images. Each of the
+images is a valid image by itself, or they can all be combined on an
+8x8 grid to form a single image (although if you intend to combine them
+you would be far better off using the libpng interlace handling).
+
+The first pass will return an image 1/8 as wide as the entire image
+(every 8th column starting in column 0) and 1/8 as high as the original
+(every 8th row starting in row 0), the second will be 1/8 as wide
+(starting in column 4) and 1/8 as high (also starting in row 0). The
+third pass will be 1/4 as wide (every 4th pixel starting in column 0) and
+1/8 as high (every 8th row starting in row 4), and the fourth pass will
+be 1/4 as wide and 1/4 as high (every 4th column starting in column 2,
+and every 4th row starting in row 0). The fifth pass will return an
+image 1/2 as wide, and 1/4 as high (starting at column 0 and row 2),
+while the sixth pass will be 1/2 as wide and 1/2 as high as the original
+(starting in column 1 and row 0). The seventh and final pass will be as
+wide as the original, and 1/2 as high, containing all of the odd
+numbered scanlines. Phew!
+
+If you want libpng to expand the images, call this before calling
+png_start_read_image() or png_read_update_info():
+
+ if (interlace_type == PNG_INTERLACE_ADAM7)
+ number_of_passes
+ = png_set_interlace_handling(png_ptr);
+
+This will return the number of passes needed. Currently, this
+is seven, but may change if another interlace type is added.
+This function can be called even if the file is not interlaced,
+where it will return one pass.
+
+If you are not going to display the image after each pass, but are
+going to wait until the entire image is read in, use the sparkle
+effect. This effect is faster and the end result of either method
+is exactly the same. If you are planning on displaying the image
+after each pass, the "rectangle" effect is generally considered the
+better looking one.
+
+If you only want the "sparkle" effect, just call png_read_rows() as
+normal, with the third parameter NULL. Make sure you make pass over
+the image number_of_passes times, and you don't change the data in the
+rows between calls. You can change the locations of the data, just
+not the data. Each pass only writes the pixels appropriate for that
+pass, and assumes the data from previous passes is still valid.
+
+ png_read_rows(png_ptr, row_pointers, NULL,
+ number_of_rows);
+
+If you only want the first effect (the rectangles), do the same as
+before except pass the row buffer in the third parameter, and leave
+the second parameter NULL.
+
+ png_read_rows(png_ptr, NULL, row_pointers,
+ number_of_rows);
+
+.SS Finishing a sequential read
+
+After you are finished reading the image through the
+low-level interface, you can finish reading the file. If you are
+interested in comments or time, which may be stored either before or
+after the image data, you should pass the separate png_info struct if
+you want to keep the comments from before and after the image
+separate. If you are not interested, you can pass NULL.
+
+ png_read_end(png_ptr, end_info);
+
+When you are done, you can free all memory allocated by libpng like this:
+
+ png_destroy_read_struct(&png_ptr, &info_ptr,
+ &end_info);
+
+It is also possible to individually free the info_ptr members that
+point to libpng-allocated storage with the following function:
+
+ png_free_data(png_ptr, info_ptr, mask, seq)
+ mask - identifies data to be freed, a mask
+ containing the bitwise OR of one or
+ more of
+ PNG_FREE_PLTE, PNG_FREE_TRNS,
+ PNG_FREE_HIST, PNG_FREE_ICCP,
+ PNG_FREE_PCAL, PNG_FREE_ROWS,
+ PNG_FREE_SCAL, PNG_FREE_SPLT,
+ PNG_FREE_TEXT, PNG_FREE_UNKN,
+ or simply PNG_FREE_ALL
+ seq - sequence number of item to be freed
+ (-1 for all items)
+
+This function may be safely called when the relevant storage has
+already been freed, or has not yet been allocated, or was allocated
+by the user and not by libpng, and will in those cases do nothing.
+The "seq" parameter is ignored if only one item of the selected data
+type, such as PLTE, is allowed. If "seq" is not -1, and multiple items
+are allowed for the data type identified in the mask, such as text or
+sPLT, only the n'th item in the structure is freed, where n is "seq".
+
+The default behavior is only to free data that was allocated internally
+by libpng. This can be changed, so that libpng will not free the data,
+or so that it will free data that was allocated by the user with png_malloc()
+or png_zalloc() and passed in via a png_set_*() function, with
+
+ png_data_freer(png_ptr, info_ptr, freer, mask)
+ mask - which data elements are affected
+ same choices as in png_free_data()
+ freer - one of
+ PNG_DESTROY_WILL_FREE_DATA
+ PNG_SET_WILL_FREE_DATA
+ PNG_USER_WILL_FREE_DATA
+
+This function only affects data that has already been allocated.
+You can call this function after reading the PNG data but before calling
+any png_set_*() functions, to control whether the user or the png_set_*()
+function is responsible for freeing any existing data that might be present,
+and again after the png_set_*() functions to control whether the user
+or png_destroy_*() is supposed to free the data. When the user assumes
+responsibility for libpng-allocated data, the application must use
+png_free() to free it, and when the user transfers responsibility to libpng
+for data that the user has allocated, the user must have used png_malloc()
+or png_zalloc() to allocate it.
+
+If you allocated your row_pointers in a single block, as suggested above in
+the description of the high level read interface, you must not transfer
+responsibility for freeing it to the png_set_rows or png_read_destroy function,
+because they would also try to free the individual row_pointers[i].
+
+If you allocated text_ptr.text, text_ptr.lang, and text_ptr.translated_keyword
+separately, do not transfer responsibility for freeing text_ptr to libpng,
+because when libpng fills a png_text structure it combines these members with
+the key member, and png_free_data() will free only text_ptr.key. Similarly,
+if you transfer responsibility for free'ing text_ptr from libpng to your
+application, your application must not separately free those members.
+
+The png_free_data() function will turn off the "valid" flag for anything
+it frees. If you need to turn the flag off for a chunk that was freed by
+your application instead of by libpng, you can use
+
+ png_set_invalid(png_ptr, info_ptr, mask);
+ mask - identifies the chunks to be made invalid,
+ containing the bitwise OR of one or
+ more of
+ PNG_INFO_gAMA, PNG_INFO_sBIT,
+ PNG_INFO_cHRM, PNG_INFO_PLTE,
+ PNG_INFO_tRNS, PNG_INFO_bKGD,
+ PNG_INFO_hIST, PNG_INFO_pHYs,
+ PNG_INFO_oFFs, PNG_INFO_tIME,
+ PNG_INFO_pCAL, PNG_INFO_sRGB,
+ PNG_INFO_iCCP, PNG_INFO_sPLT,
+ PNG_INFO_sCAL, PNG_INFO_IDAT
+
+For a more compact example of reading a PNG image, see the file example.c.
+
+.SS Reading PNG files progressively
+
+The progressive reader is slightly different then the non-progressive
+reader. Instead of calling png_read_info(), png_read_rows(), and
+png_read_end(), you make one call to png_process_data(), which calls
+callbacks when it has the info, a row, or the end of the image. You
+set up these callbacks with png_set_progressive_read_fn(). You don't
+have to worry about the input/output functions of libpng, as you are
+giving the library the data directly in png_process_data(). I will
+assume that you have read the section on reading PNG files above,
+so I will only highlight the differences (although I will show
+all of the code).
+
+png_structp png_ptr;
+png_infop info_ptr;
+
+ /* An example code fragment of how you would
+ initialize the progressive reader in your
+ application. */
+ int
+ initialize_png_reader()
+ {
+ png_ptr = png_create_read_struct
+ (PNG_LIBPNG_VER_STRING, (png_voidp)user_error_ptr,
+ user_error_fn, user_warning_fn);
+ if (!png_ptr)
+ return (ERROR);
+ info_ptr = png_create_info_struct(png_ptr);
+ if (!info_ptr)
+ {
+ png_destroy_read_struct(&png_ptr, (png_infopp)NULL,
+ (png_infopp)NULL);
+ return (ERROR);
+ }
+
+ if (setjmp(png_jmpbuf(png_ptr)))
+ {
+ png_destroy_read_struct(&png_ptr, &info_ptr,
+ (png_infopp)NULL);
+ return (ERROR);
+ }
+
+ /* This one's new. You can provide functions
+ to be called when the header info is valid,
+ when each row is completed, and when the image
+ is finished. If you aren't using all functions,
+ you can specify NULL parameters. Even when all
+ three functions are NULL, you need to call
+ png_set_progressive_read_fn(). You can use
+ any struct as the user_ptr (cast to a void pointer
+ for the function call), and retrieve the pointer
+ from inside the callbacks using the function
+
+ png_get_progressive_ptr(png_ptr);
+
+ which will return a void pointer, which you have
+ to cast appropriately.
+ */
+ png_set_progressive_read_fn(png_ptr, (void *)user_ptr,
+ info_callback, row_callback, end_callback);
+
+ return 0;
+ }
+
+ /* A code fragment that you call as you receive blocks
+ of data */
+ int
+ process_data(png_bytep buffer, png_uint_32 length)
+ {
+ if (setjmp(png_jmpbuf(png_ptr)))
+ {
+ png_destroy_read_struct(&png_ptr, &info_ptr,
+ (png_infopp)NULL);
+ return (ERROR);
+ }
+
+ /* This one's new also. Simply give it a chunk
+ of data from the file stream (in order, of
+ course). On machines with segmented memory
+ models machines, don't give it any more than
+ 64K. The library seems to run fine with sizes
+ of 4K. Although you can give it much less if
+ necessary (I assume you can give it chunks of
+ 1 byte, I haven't tried less then 256 bytes
+ yet). When this function returns, you may
+ want to display any rows that were generated
+ in the row callback if you don't already do
+ so there.
+ */
+ png_process_data(png_ptr, info_ptr, buffer, length);
+ return 0;
+ }
+
+ /* This function is called (as set by
+ png_set_progressive_read_fn() above) when enough data
+ has been supplied so all of the header has been
+ read.
+ */
+ void
+ info_callback(png_structp png_ptr, png_infop info)
+ {
+ /* Do any setup here, including setting any of
+ the transformations mentioned in the Reading
+ PNG files section. For now, you _must_ call
+ either png_start_read_image() or
+ png_read_update_info() after all the
+ transformations are set (even if you don't set
+ any). You may start getting rows before
+ png_process_data() returns, so this is your
+ last chance to prepare for that.
+ */
+ }
+
+ /* This function is called when each row of image
+ data is complete */
+ void
+ row_callback(png_structp png_ptr, png_bytep new_row,
+ png_uint_32 row_num, int pass)
+ {
+ /* If the image is interlaced, and you turned
+ on the interlace handler, this function will
+ be called for every row in every pass. Some
+ of these rows will not be changed from the
+ previous pass. When the row is not changed,
+ the new_row variable will be NULL. The rows
+ and passes are called in order, so you don't
+ really need the row_num and pass, but I'm
+ supplying them because it may make your life
+ easier.
+
+ For the non-NULL rows of interlaced images,
+ you must call png_progressive_combine_row()
+ passing in the row and the old row. You can
+ call this function for NULL rows (it will just
+ return) and for non-interlaced images (it just
+ does the memcpy for you) if it will make the
+ code easier. Thus, you can just do this for
+ all cases:
+ */
+
+ png_progressive_combine_row(png_ptr, old_row,
+ new_row);
+
+ /* where old_row is what was displayed for
+ previously for the row. Note that the first
+ pass (pass == 0, really) will completely cover
+ the old row, so the rows do not have to be
+ initialized. After the first pass (and only
+ for interlaced images), you will have to pass
+ the current row, and the function will combine
+ the old row and the new row.
+ */
+ }
+
+ void
+ end_callback(png_structp png_ptr, png_infop info)
+ {
+ /* This function is called after the whole image
+ has been read, including any chunks after the
+ image (up to and including the IEND). You
+ will usually have the same info chunk as you
+ had in the header, although some data may have
+ been added to the comments and time fields.
+
+ Most people won't do much here, perhaps setting
+ a flag that marks the image as finished.
+ */
+ }
+
+
+
+.SH IV. Writing
+
+Much of this is very similar to reading. However, everything of
+importance is repeated here, so you won't have to constantly look
+back up in the reading section to understand writing.
+
+.SS Setup
+
+You will want to do the I/O initialization before you get into libpng,
+so if it doesn't work, you don't have anything to undo. If you are not
+using the standard I/O functions, you will need to replace them with
+custom writing functions. See the discussion under Customizing libpng.
+
+ FILE *fp = fopen(file_name, "wb");
+ if (!fp)
+ {
+ return (ERROR);
+ }
+
+Next, png_struct and png_info need to be allocated and initialized.
+As these can be both relatively large, you may not want to store these
+on the stack, unless you have stack space to spare. Of course, you
+will want to check if they return NULL. If you are also reading,
+you won't want to name your read structure and your write structure
+both "png_ptr"; you can call them anything you like, such as
+"read_ptr" and "write_ptr". Look at pngtest.c, for example.
+
+ png_structp png_ptr = png_create_write_struct
+ (PNG_LIBPNG_VER_STRING, (png_voidp)user_error_ptr,
+ user_error_fn, user_warning_fn);
+ if (!png_ptr)
+ return (ERROR);
+
+ png_infop info_ptr = png_create_info_struct(png_ptr);
+ if (!info_ptr)
+ {
+ png_destroy_write_struct(&png_ptr,
+ (png_infopp)NULL);
+ return (ERROR);
+ }
+
+If you want to use your own memory allocation routines,
+define PNG_USER_MEM_SUPPORTED and use
+png_create_write_struct_2() instead of png_create_write_struct():
+
+ png_structp png_ptr = png_create_write_struct_2
+ (PNG_LIBPNG_VER_STRING, (png_voidp)user_error_ptr,
+ user_error_fn, user_warning_fn, (png_voidp)
+ user_mem_ptr, user_malloc_fn, user_free_fn);
+
+After you have these structures, you will need to set up the
+error handling. When libpng encounters an error, it expects to
+longjmp() back to your routine. Therefore, you will need to call
+setjmp() and pass the png_jmpbuf(png_ptr). If you
+write the file from different routines, you will need to update
+the png_jmpbuf(png_ptr) every time you enter a new routine that will
+call a png_*() function. See your documentation of setjmp/longjmp
+for your compiler for more information on setjmp/longjmp. See
+the discussion on libpng error handling in the Customizing Libpng
+section below for more information on the libpng error handling.
+
+ if (setjmp(png_jmpbuf(png_ptr)))
+ {
+ png_destroy_write_struct(&png_ptr, &info_ptr);
+ fclose(fp);
+ return (ERROR);
+ }
+ ...
+ return;
+
+If you would rather avoid the complexity of setjmp/longjmp issues,
+you can compile libpng with PNG_SETJMP_NOT_SUPPORTED, in which case
+errors will result in a call to PNG_ABORT() which defaults to abort().
+
+Now you need to set up the output code. The default for libpng is to
+use the C function fwrite(). If you use this, you will need to pass a
+valid FILE * in the function png_init_io(). Be sure that the file is
+opened in binary mode. Again, if you wish to handle writing data in
+another way, see the discussion on libpng I/O handling in the Customizing
+Libpng section below.
+
+ png_init_io(png_ptr, fp);
+
+If you are embedding your PNG into a datastream such as MNG, and don't
+want libpng to write the 8-byte signature, or if you have already
+written the signature in your application, use
+
+ png_set_sig_bytes(png_ptr, 8);
+
+to inform libpng that it should not write a signature.
+
+.SS Write callbacks
+
+At this point, you can set up a callback function that will be
+called after each row has been written, which you can use to control
+a progress meter or the like. It's demonstrated in pngtest.c.
+You must supply a function
+
+ void write_row_callback(png_ptr, png_uint_32 row,
+ int pass);
+ {
+ /* put your code here */
+ }
+
+(You can give it another name that you like instead of "write_row_callback")
+
+To inform libpng about your function, use
+
+ png_set_write_status_fn(png_ptr, write_row_callback);
+
+You now have the option of modifying how the compression library will
+run. The following functions are mainly for testing, but may be useful
+in some cases, like if you need to write PNG files extremely fast and
+are willing to give up some compression, or if you want to get the
+maximum possible compression at the expense of slower writing. If you
+have no special needs in this area, let the library do what it wants by
+not calling this function at all, as it has been tuned to deliver a good
+speed/compression ratio. The second parameter to png_set_filter() is
+the filter method, for which the only valid values are 0 (as of the
+July 1999 PNG specification, version 1.2) or 64 (if you are writing
+a PNG datastream that is to be embedded in a MNG datastream). The third
+parameter is a flag that indicates which filter type(s) are to be tested
+for each scanline. See the PNG specification for details on the specific
+filter types.
+
+
+ /* turn on or off filtering, and/or choose
+ specific filters. You can use either a single
+ PNG_FILTER_VALUE_NAME or the bitwise OR of one
+ or more PNG_FILTER_NAME masks. */
+ png_set_filter(png_ptr, 0,
+ PNG_FILTER_NONE | PNG_FILTER_VALUE_NONE |
+ PNG_FILTER_SUB | PNG_FILTER_VALUE_SUB |
+ PNG_FILTER_UP | PNG_FILTER_VALUE_UP |
+ PNG_FILTER_AVG | PNG_FILTER_VALUE_AVG |
+ PNG_FILTER_PAETH | PNG_FILTER_VALUE_PAETH|
+ PNG_ALL_FILTERS);
+
+If an application
+wants to start and stop using particular filters during compression,
+it should start out with all of the filters (to ensure that the previous
+row of pixels will be stored in case it's needed later), and then add
+and remove them after the start of compression.
+
+If you are writing a PNG datastream that is to be embedded in a MNG
+datastream, the second parameter can be either 0 or 64.
+
+The png_set_compression_*() functions interface to the zlib compression
+library, and should mostly be ignored unless you really know what you are
+doing. The only generally useful call is png_set_compression_level()
+which changes how much time zlib spends on trying to compress the image
+data. See the Compression Library (zlib.h and algorithm.txt, distributed
+with zlib) for details on the compression levels.
+
+ /* set the zlib compression level */
+ png_set_compression_level(png_ptr,
+ Z_BEST_COMPRESSION);
+
+ /* set other zlib parameters */
+ png_set_compression_mem_level(png_ptr, 8);
+ png_set_compression_strategy(png_ptr,
+ Z_DEFAULT_STRATEGY);
+ png_set_compression_window_bits(png_ptr, 15);
+ png_set_compression_method(png_ptr, 8);
+ png_set_compression_buffer_size(png_ptr, 8192)
+
+extern PNG_EXPORT(void,png_set_zbuf_size)
+
+.SS Setting the contents of info for output
+
+You now need to fill in the png_info structure with all the data you
+wish to write before the actual image. Note that the only thing you
+are allowed to write after the image is the text chunks and the time
+chunk (as of PNG Specification 1.2, anyway). See png_write_end() and
+the latest PNG specification for more information on that. If you
+wish to write them before the image, fill them in now, and flag that
+data as being valid. If you want to wait until after the data, don't
+fill them until png_write_end(). For all the fields in png_info and
+their data types, see png.h. For explanations of what the fields
+contain, see the PNG specification.
+
+Some of the more important parts of the png_info are:
+
+ png_set_IHDR(png_ptr, info_ptr, width, height,
+ bit_depth, color_type, interlace_type,
+ compression_type, filter_method)
+ width - holds the width of the image
+ in pixels (up to 2^31).
+ height - holds the height of the image
+ in pixels (up to 2^31).
+ bit_depth - holds the bit depth of one of the
+ image channels.
+ (valid values are 1, 2, 4, 8, 16
+ and depend also on the
+ color_type. See also significant
+ bits (sBIT) below).
+ color_type - describes which color/alpha
+ channels are present.
+ PNG_COLOR_TYPE_GRAY
+ (bit depths 1, 2, 4, 8, 16)
+ PNG_COLOR_TYPE_GRAY_ALPHA
+ (bit depths 8, 16)
+ PNG_COLOR_TYPE_PALETTE
+ (bit depths 1, 2, 4, 8)
+ PNG_COLOR_TYPE_RGB
+ (bit_depths 8, 16)
+ PNG_COLOR_TYPE_RGB_ALPHA
+ (bit_depths 8, 16)
+
+ PNG_COLOR_MASK_PALETTE
+ PNG_COLOR_MASK_COLOR
+ PNG_COLOR_MASK_ALPHA
+
+ interlace_type - PNG_INTERLACE_NONE or
+ PNG_INTERLACE_ADAM7
+ compression_type - (must be
+ PNG_COMPRESSION_TYPE_DEFAULT)
+ filter_method - (must be PNG_FILTER_TYPE_DEFAULT
+ or, if you are writing a PNG to
+ be embedded in a MNG datastream,
+ can also be
+ PNG_INTRAPIXEL_DIFFERENCING)
+
+If you call png_set_IHDR(), the call must appear before any of the
+other png_set_*() functions, because they might require access to some of
+the IHDR settings. The remaining png_set_*() functions can be called
+in any order.
+
+If you wish, you can reset the compression_type, interlace_type, or
+filter_method later by calling png_set_IHDR() again; if you do this, the
+width, height, bit_depth, and color_type must be the same in each call.
+
+ png_set_PLTE(png_ptr, info_ptr, palette,
+ num_palette);
+ palette - the palette for the file
+ (array of png_color)
+ num_palette - number of entries in the palette
+
+ png_set_gAMA(png_ptr, info_ptr, gamma);
+ gamma - the gamma the image was created
+ at (PNG_INFO_gAMA)
+
+ png_set_sRGB(png_ptr, info_ptr, srgb_intent);
+ srgb_intent - the rendering intent
+ (PNG_INFO_sRGB) The presence of
+ the sRGB chunk means that the pixel
+ data is in the sRGB color space.
+ This chunk also implies specific
+ values of gAMA and cHRM. Rendering
+ intent is the CSS-1 property that
+ has been defined by the International
+ Color Consortium
+ (http://www.color.org).
+ It can be one of
+ PNG_sRGB_INTENT_SATURATION,
+ PNG_sRGB_INTENT_PERCEPTUAL,
+ PNG_sRGB_INTENT_ABSOLUTE, or
+ PNG_sRGB_INTENT_RELATIVE.
+
+
+ png_set_sRGB_gAMA_and_cHRM(png_ptr, info_ptr,
+ srgb_intent);
+ srgb_intent - the rendering intent
+ (PNG_INFO_sRGB) The presence of the
+ sRGB chunk means that the pixel
+ data is in the sRGB color space.
+ This function also causes gAMA and
+ cHRM chunks with the specific values
+ that are consistent with sRGB to be
+ written.
+
+ png_set_iCCP(png_ptr, info_ptr, name, compression_type,
+ profile, proflen);
+ name - The profile name.
+ compression - The compression type; always
+ PNG_COMPRESSION_TYPE_BASE for PNG 1.0.
+ You may give NULL to this argument to
+ ignore it.
+ profile - International Color Consortium color
+ profile data. May contain NULs.
+ proflen - length of profile data in bytes.
+
+ png_set_sBIT(png_ptr, info_ptr, sig_bit);
+ sig_bit - the number of significant bits for
+ (PNG_INFO_sBIT) each of the gray, red,
+ green, and blue channels, whichever are
+ appropriate for the given color type
+ (png_color_16)
+
+ png_set_tRNS(png_ptr, info_ptr, trans_alpha,
+ num_trans, trans_color);
+ trans_alpha - array of alpha (transparency)
+ entries for palette (PNG_INFO_tRNS)
+ trans_color - graylevel or color sample values
+ (in order red, green, blue) of the
+ single transparent color for
+ non-paletted images (PNG_INFO_tRNS)
+ num_trans - number of transparent entries
+ (PNG_INFO_tRNS)
+
+ png_set_hIST(png_ptr, info_ptr, hist);
+ (PNG_INFO_hIST)
+ hist - histogram of palette (array of
+ png_uint_16)
+
+ png_set_tIME(png_ptr, info_ptr, mod_time);
+ mod_time - time image was last modified
+ (PNG_VALID_tIME)
+
+ png_set_bKGD(png_ptr, info_ptr, background);
+ background - background color (PNG_VALID_bKGD)
+
+ png_set_text(png_ptr, info_ptr, text_ptr, num_text);
+ text_ptr - array of png_text holding image
+ comments
+ text_ptr[i].compression - type of compression used
+ on "text" PNG_TEXT_COMPRESSION_NONE
+ PNG_TEXT_COMPRESSION_zTXt
+ PNG_ITXT_COMPRESSION_NONE
+ PNG_ITXT_COMPRESSION_zTXt
+ text_ptr[i].key - keyword for comment. Must contain
+ 1-79 characters.
+ text_ptr[i].text - text comments for current
+ keyword. Can be NULL or empty.
+ text_ptr[i].text_length - length of text string,
+ after decompression, 0 for iTXt
+ text_ptr[i].itxt_length - length of itxt string,
+ after decompression, 0 for tEXt/zTXt
+ text_ptr[i].lang - language of comment (NULL or
+ empty for unknown).
+ text_ptr[i].translated_keyword - keyword in UTF-8 (NULL
+ or empty for unknown).
+ Note that the itxt_length, lang, and lang_key
+ members of the text_ptr structure only exist
+ when the library is built with iTXt chunk support.
+
+ num_text - number of comments
+
+ png_set_sPLT(png_ptr, info_ptr, &palette_ptr,
+ num_spalettes);
+ palette_ptr - array of png_sPLT_struct structures
+ to be added to the list of palettes
+ in the info structure.
+ num_spalettes - number of palette structures to be
+ added.
+
+ png_set_oFFs(png_ptr, info_ptr, offset_x, offset_y,
+ unit_type);
+ offset_x - positive offset from the left
+ edge of the screen
+ offset_y - positive offset from the top
+ edge of the screen
+ unit_type - PNG_OFFSET_PIXEL, PNG_OFFSET_MICROMETER
+
+ png_set_pHYs(png_ptr, info_ptr, res_x, res_y,
+ unit_type);
+ res_x - pixels/unit physical resolution
+ in x direction
+ res_y - pixels/unit physical resolution
+ in y direction
+ unit_type - PNG_RESOLUTION_UNKNOWN,
+ PNG_RESOLUTION_METER
+
+ png_set_sCAL(png_ptr, info_ptr, unit, width, height)
+ unit - physical scale units (an integer)
+ width - width of a pixel in physical scale units
+ height - height of a pixel in physical scale units
+ (width and height are doubles)
+
+ png_set_sCAL_s(png_ptr, info_ptr, unit, width, height)
+ unit - physical scale units (an integer)
+ width - width of a pixel in physical scale units
+ height - height of a pixel in physical scale units
+ (width and height are strings like "2.54")
+
+ png_set_unknown_chunks(png_ptr, info_ptr, &unknowns,
+ num_unknowns)
+ unknowns - array of png_unknown_chunk
+ structures holding unknown chunks
+ unknowns[i].name - name of unknown chunk
+ unknowns[i].data - data of unknown chunk
+ unknowns[i].size - size of unknown chunk's data
+ unknowns[i].location - position to write chunk in file
+ 0: do not write chunk
+ PNG_HAVE_IHDR: before PLTE
+ PNG_HAVE_PLTE: before IDAT
+ PNG_AFTER_IDAT: after IDAT
+
+The "location" member is set automatically according to
+what part of the output file has already been written.
+You can change its value after calling png_set_unknown_chunks()
+as demonstrated in pngtest.c. Within each of the "locations",
+the chunks are sequenced according to their position in the
+structure (that is, the value of "i", which is the order in which
+the chunk was either read from the input file or defined with
+png_set_unknown_chunks).
+
+A quick word about text and num_text. text is an array of png_text
+structures. num_text is the number of valid structures in the array.
+Each png_text structure holds a language code, a keyword, a text value,
+and a compression type.
+
+The compression types have the same valid numbers as the compression
+types of the image data. Currently, the only valid number is zero.
+However, you can store text either compressed or uncompressed, unlike
+images, which always have to be compressed. So if you don't want the
+text compressed, set the compression type to PNG_TEXT_COMPRESSION_NONE.
+Because tEXt and zTXt chunks don't have a language field, if you
+specify PNG_TEXT_COMPRESSION_NONE or PNG_TEXT_COMPRESSION_zTXt
+any language code or translated keyword will not be written out.
+
+Until text gets around 1000 bytes, it is not worth compressing it.
+After the text has been written out to the file, the compression type
+is set to PNG_TEXT_COMPRESSION_NONE_WR or PNG_TEXT_COMPRESSION_zTXt_WR,
+so that it isn't written out again at the end (in case you are calling
+png_write_end() with the same struct.
+
+The keywords that are given in the PNG Specification are:
+
+ Title Short (one line) title or
+ caption for image
+ Author Name of image's creator
+ Description Description of image (possibly long)
+ Copyright Copyright notice
+ Creation Time Time of original image creation
+ (usually RFC 1123 format, see below)
+ Software Software used to create the image
+ Disclaimer Legal disclaimer
+ Warning Warning of nature of content
+ Source Device used to create the image
+ Comment Miscellaneous comment; conversion
+ from other image format
+
+The keyword-text pairs work like this. Keywords should be short
+simple descriptions of what the comment is about. Some typical
+keywords are found in the PNG specification, as is some recommendations
+on keywords. You can repeat keywords in a file. You can even write
+some text before the image and some after. For example, you may want
+to put a description of the image before the image, but leave the
+disclaimer until after, so viewers working over modem connections
+don't have to wait for the disclaimer to go over the modem before
+they start seeing the image. Finally, keywords should be full
+words, not abbreviations. Keywords and text are in the ISO 8859-1
+(Latin-1) character set (a superset of regular ASCII) and can not
+contain NUL characters, and should not contain control or other
+unprintable characters. To make the comments widely readable, stick
+with basic ASCII, and avoid machine specific character set extensions
+like the IBM-PC character set. The keyword must be present, but
+you can leave off the text string on non-compressed pairs.
+Compressed pairs must have a text string, as only the text string
+is compressed anyway, so the compression would be meaningless.
+
+PNG supports modification time via the png_time structure. Two
+conversion routines are provided, png_convert_from_time_t() for
+time_t and png_convert_from_struct_tm() for struct tm. The
+time_t routine uses gmtime(). You don't have to use either of
+these, but if you wish to fill in the png_time structure directly,
+you should provide the time in universal time (GMT) if possible
+instead of your local time. Note that the year number is the full
+year (e.g. 1998, rather than 98 - PNG is year 2000 compliant!), and
+that months start with 1.
+
+If you want to store the time of the original image creation, you should
+use a plain tEXt chunk with the "Creation Time" keyword. This is
+necessary because the "creation time" of a PNG image is somewhat vague,
+depending on whether you mean the PNG file, the time the image was
+created in a non-PNG format, a still photo from which the image was
+scanned, or possibly the subject matter itself. In order to facilitate
+machine-readable dates, it is recommended that the "Creation Time"
+tEXt chunk use RFC 1123 format dates (e.g. "22 May 1997 18:07:10 GMT"),
+although this isn't a requirement. Unlike the tIME chunk, the
+"Creation Time" tEXt chunk is not expected to be automatically changed
+by the software. To facilitate the use of RFC 1123 dates, a function
+png_convert_to_rfc1123(png_timep) is provided to convert from PNG
+time to an RFC 1123 format string.
+
+.SS Writing unknown chunks
+
+You can use the png_set_unknown_chunks function to queue up chunks
+for writing. You give it a chunk name, raw data, and a size; that's
+all there is to it. The chunks will be written by the next following
+png_write_info_before_PLTE, png_write_info, or png_write_end function.
+Any chunks previously read into the info structure's unknown-chunk
+list will also be written out in a sequence that satisfies the PNG
+specification's ordering rules.
+
+.SS The high-level write interface
+
+At this point there are two ways to proceed; through the high-level
+write interface, or through a sequence of low-level write operations.
+You can use the high-level interface if your image data is present
+in the info structure. All defined output
+transformations are permitted, enabled by the following masks.
+
+ PNG_TRANSFORM_IDENTITY No transformation
+ PNG_TRANSFORM_PACKING Pack 1, 2 and 4-bit samples
+ PNG_TRANSFORM_PACKSWAP Change order of packed
+ pixels to LSB first
+ PNG_TRANSFORM_INVERT_MONO Invert monochrome images
+ PNG_TRANSFORM_SHIFT Normalize pixels to the
+ sBIT depth
+ PNG_TRANSFORM_BGR Flip RGB to BGR, RGBA
+ to BGRA
+ PNG_TRANSFORM_SWAP_ALPHA Flip RGBA to ARGB or GA
+ to AG
+ PNG_TRANSFORM_INVERT_ALPHA Change alpha from opacity
+ to transparency
+ PNG_TRANSFORM_SWAP_ENDIAN Byte-swap 16-bit samples
+ PNG_TRANSFORM_STRIP_FILLER Strip out filler
+ bytes (deprecated).
+ PNG_TRANSFORM_STRIP_FILLER_BEFORE Strip out leading
+ filler bytes
+ PNG_TRANSFORM_STRIP_FILLER_AFTER Strip out trailing
+ filler bytes
+
+If you have valid image data in the info structure (you can use
+png_set_rows() to put image data in the info structure), simply do this:
+
+ png_write_png(png_ptr, info_ptr, png_transforms, NULL)
+
+where png_transforms is an integer containing the bitwise OR of some set of
+transformation flags. This call is equivalent to png_write_info(),
+followed the set of transformations indicated by the transform mask,
+then png_write_image(), and finally png_write_end().
+
+(The final parameter of this call is not yet used. Someday it might point
+to transformation parameters required by some future output transform.)
+
+You must use png_transforms and not call any png_set_transform() functions
+when you use png_write_png().
+
+.SS The low-level write interface
+
+If you are going the low-level route instead, you are now ready to
+write all the file information up to the actual image data. You do
+this with a call to png_write_info().
+
+ png_write_info(png_ptr, info_ptr);
+
+Note that there is one transformation you may need to do before
+png_write_info(). In PNG files, the alpha channel in an image is the
+level of opacity. If your data is supplied as a level of transparency,
+you can invert the alpha channel before you write it, so that 0 is
+fully transparent and 255 (in 8-bit or paletted images) or 65535
+(in 16-bit images) is fully opaque, with
+
+ png_set_invert_alpha(png_ptr);
+
+This must appear before png_write_info() instead of later with the
+other transformations because in the case of paletted images the tRNS
+chunk data has to be inverted before the tRNS chunk is written. If
+your image is not a paletted image, the tRNS data (which in such cases
+represents a single color to be rendered as transparent) won't need to
+be changed, and you can safely do this transformation after your
+png_write_info() call.
+
+If you need to write a private chunk that you want to appear before
+the PLTE chunk when PLTE is present, you can write the PNG info in
+two steps, and insert code to write your own chunk between them:
+
+ png_write_info_before_PLTE(png_ptr, info_ptr);
+ png_set_unknown_chunks(png_ptr, info_ptr, ...);
+ png_write_info(png_ptr, info_ptr);
+
+After you've written the file information, you can set up the library
+to handle any special transformations of the image data. The various
+ways to transform the data will be described in the order that they
+should occur. This is important, as some of these change the color
+type and/or bit depth of the data, and some others only work on
+certain color types and bit depths. Even though each transformation
+checks to see if it has data that it can do something with, you should
+make sure to only enable a transformation if it will be valid for the
+data. For example, don't swap red and blue on grayscale data.
+
+PNG files store RGB pixels packed into 3 or 6 bytes. This code tells
+the library to strip input data that has 4 or 8 bytes per pixel down
+to 3 or 6 bytes (or strip 2 or 4-byte grayscale+filler data to 1 or 2
+bytes per pixel).
+
+ png_set_filler(png_ptr, 0, PNG_FILLER_BEFORE);
+
+where the 0 is unused, and the location is either PNG_FILLER_BEFORE or
+PNG_FILLER_AFTER, depending upon whether the filler byte in the pixel
+is stored XRGB or RGBX.
+
+PNG files pack pixels of bit depths 1, 2, and 4 into bytes as small as
+they can, resulting in, for example, 8 pixels per byte for 1 bit files.
+If the data is supplied at 1 pixel per byte, use this code, which will
+correctly pack the pixels into a single byte:
+
+ png_set_packing(png_ptr);
+
+PNG files reduce possible bit depths to 1, 2, 4, 8, and 16. If your
+data is of another bit depth, you can write an sBIT chunk into the
+file so that decoders can recover the original data if desired.
+
+ /* Set the true bit depth of the image data */
+ if (color_type & PNG_COLOR_MASK_COLOR)
+ {
+ sig_bit.red = true_bit_depth;
+ sig_bit.green = true_bit_depth;
+ sig_bit.blue = true_bit_depth;
+ }
+ else
+ {
+ sig_bit.gray = true_bit_depth;
+ }
+ if (color_type & PNG_COLOR_MASK_ALPHA)
+ {
+ sig_bit.alpha = true_bit_depth;
+ }
+
+ png_set_sBIT(png_ptr, info_ptr, &sig_bit);
+
+If the data is stored in the row buffer in a bit depth other than
+one supported by PNG (e.g. 3 bit data in the range 0-7 for a 4-bit PNG),
+this will scale the values to appear to be the correct bit depth as
+is required by PNG.
+
+ png_set_shift(png_ptr, &sig_bit);
+
+PNG files store 16 bit pixels in network byte order (big-endian,
+ie. most significant bits first). This code would be used if they are
+supplied the other way (little-endian, i.e. least significant bits
+first, the way PCs store them):
+
+ if (bit_depth > 8)
+ png_set_swap(png_ptr);
+
+If you are using packed-pixel images (1, 2, or 4 bits/pixel), and you
+need to change the order the pixels are packed into bytes, you can use:
+
+ if (bit_depth < 8)
+ png_set_packswap(png_ptr);
+
+PNG files store 3 color pixels in red, green, blue order. This code
+would be used if they are supplied as blue, green, red:
+
+ png_set_bgr(png_ptr);
+
+PNG files describe monochrome as black being zero and white being
+one. This code would be used if the pixels are supplied with this reversed
+(black being one and white being zero):
+
+ png_set_invert_mono(png_ptr);
+
+Finally, you can write your own transformation function if none of
+the existing ones meets your needs. This is done by setting a callback
+with
+
+ png_set_write_user_transform_fn(png_ptr,
+ write_transform_fn);
+
+You must supply the function
+
+ void write_transform_fn(png_ptr ptr, row_info_ptr
+ row_info, png_bytep data)
+
+See pngtest.c for a working example. Your function will be called
+before any of the other transformations are processed.
+
+You can also set up a pointer to a user structure for use by your
+callback function.
+
+ png_set_user_transform_info(png_ptr, user_ptr, 0, 0);
+
+The user_channels and user_depth parameters of this function are ignored
+when writing; you can set them to zero as shown.
+
+You can retrieve the pointer via the function png_get_user_transform_ptr().
+For example:
+
+ voidp write_user_transform_ptr =
+ png_get_user_transform_ptr(png_ptr);
+
+It is possible to have libpng flush any pending output, either manually,
+or automatically after a certain number of lines have been written. To
+flush the output stream a single time call:
+
+ png_write_flush(png_ptr);
+
+and to have libpng flush the output stream periodically after a certain
+number of scanlines have been written, call:
+
+ png_set_flush(png_ptr, nrows);
+
+Note that the distance between rows is from the last time png_write_flush()
+was called, or the first row of the image if it has never been called.
+So if you write 50 lines, and then png_set_flush 25, it will flush the
+output on the next scanline, and every 25 lines thereafter, unless
+png_write_flush() is called before 25 more lines have been written.
+If nrows is too small (less than about 10 lines for a 640 pixel wide
+RGB image) the image compression may decrease noticeably (although this
+may be acceptable for real-time applications). Infrequent flushing will
+only degrade the compression performance by a few percent over images
+that do not use flushing.
+
+.SS Writing the image data
+
+That's it for the transformations. Now you can write the image data.
+The simplest way to do this is in one function call. If you have the
+whole image in memory, you can just call png_write_image() and libpng
+will write the image. You will need to pass in an array of pointers to
+each row. This function automatically handles interlacing, so you don't
+need to call png_set_interlace_handling() or call this function multiple
+times, or any of that other stuff necessary with png_write_rows().
+
+ png_write_image(png_ptr, row_pointers);
+
+where row_pointers is:
+
+ png_byte *row_pointers[height];
+
+You can point to void or char or whatever you use for pixels.
+
+If you don't want to write the whole image at once, you can
+use png_write_rows() instead. If the file is not interlaced,
+this is simple:
+
+ png_write_rows(png_ptr, row_pointers,
+ number_of_rows);
+
+row_pointers is the same as in the png_write_image() call.
+
+If you are just writing one row at a time, you can do this with
+a single row_pointer instead of an array of row_pointers:
+
+ png_bytep row_pointer = row;
+
+ png_write_row(png_ptr, row_pointer);
+
+When the file is interlaced, things can get a good deal more complicated.
+The only currently (as of the PNG Specification version 1.2, dated July
+1999) defined interlacing scheme for PNG files is the "Adam7" interlace
+scheme, that breaks down an image into seven smaller images of varying
+size. libpng will build these images for you, or you can do them
+yourself. If you want to build them yourself, see the PNG specification
+for details of which pixels to write when.
+
+If you don't want libpng to handle the interlacing details, just
+use png_set_interlace_handling() and call png_write_rows() the
+correct number of times to write all seven sub-images.
+
+If you want libpng to build the sub-images, call this before you start
+writing any rows:
+
+ number_of_passes =
+ png_set_interlace_handling(png_ptr);
+
+This will return the number of passes needed. Currently, this is seven,
+but may change if another interlace type is added.
+
+Then write the complete image number_of_passes times.
+
+ png_write_rows(png_ptr, row_pointers,
+ number_of_rows);
+
+As some of these rows are not used, and thus return immediately, you may
+want to read about interlacing in the PNG specification, and only update
+the rows that are actually used.
+
+.SS Finishing a sequential write
+
+After you are finished writing the image, you should finish writing
+the file. If you are interested in writing comments or time, you should
+pass an appropriately filled png_info pointer. If you are not interested,
+you can pass NULL.
+
+ png_write_end(png_ptr, info_ptr);
+
+When you are done, you can free all memory used by libpng like this:
+
+ png_destroy_write_struct(&png_ptr, &info_ptr);
+
+It is also possible to individually free the info_ptr members that
+point to libpng-allocated storage with the following function:
+
+ png_free_data(png_ptr, info_ptr, mask, seq)
+ mask - identifies data to be freed, a mask
+ containing the bitwise OR of one or
+ more of
+ PNG_FREE_PLTE, PNG_FREE_TRNS,
+ PNG_FREE_HIST, PNG_FREE_ICCP,
+ PNG_FREE_PCAL, PNG_FREE_ROWS,
+ PNG_FREE_SCAL, PNG_FREE_SPLT,
+ PNG_FREE_TEXT, PNG_FREE_UNKN,
+ or simply PNG_FREE_ALL
+ seq - sequence number of item to be freed
+ (-1 for all items)
+
+This function may be safely called when the relevant storage has
+already been freed, or has not yet been allocated, or was allocated
+by the user and not by libpng, and will in those cases do nothing.
+The "seq" parameter is ignored if only one item of the selected data
+type, such as PLTE, is allowed. If "seq" is not -1, and multiple items
+are allowed for the data type identified in the mask, such as text or
+sPLT, only the n'th item in the structure is freed, where n is "seq".
+
+If you allocated data such as a palette that you passed in to libpng
+with png_set_*, you must not free it until just before the call to
+png_destroy_write_struct().
+
+The default behavior is only to free data that was allocated internally
+by libpng. This can be changed, so that libpng will not free the data,
+or so that it will free data that was allocated by the user with png_malloc()
+or png_zalloc() and passed in via a png_set_*() function, with
+
+ png_data_freer(png_ptr, info_ptr, freer, mask)
+ mask - which data elements are affected
+ same choices as in png_free_data()
+ freer - one of
+ PNG_DESTROY_WILL_FREE_DATA
+ PNG_SET_WILL_FREE_DATA
+ PNG_USER_WILL_FREE_DATA
+
+For example, to transfer responsibility for some data from a read structure
+to a write structure, you could use
+
+ png_data_freer(read_ptr, read_info_ptr,
+ PNG_USER_WILL_FREE_DATA,
+ PNG_FREE_PLTE|PNG_FREE_tRNS|PNG_FREE_hIST)
+ png_data_freer(write_ptr, write_info_ptr,
+ PNG_DESTROY_WILL_FREE_DATA,
+ PNG_FREE_PLTE|PNG_FREE_tRNS|PNG_FREE_hIST)
+
+thereby briefly reassigning responsibility for freeing to the user but
+immediately afterwards reassigning it once more to the write_destroy
+function. Having done this, it would then be safe to destroy the read
+structure and continue to use the PLTE, tRNS, and hIST data in the write
+structure.
+
+This function only affects data that has already been allocated.
+You can call this function before calling after the png_set_*() functions
+to control whether the user or png_destroy_*() is supposed to free the data.
+When the user assumes responsibility for libpng-allocated data, the
+application must use
+png_free() to free it, and when the user transfers responsibility to libpng
+for data that the user has allocated, the user must have used png_malloc()
+or png_zalloc() to allocate it.
+
+If you allocated text_ptr.text, text_ptr.lang, and text_ptr.translated_keyword
+separately, do not transfer responsibility for freeing text_ptr to libpng,
+because when libpng fills a png_text structure it combines these members with
+the key member, and png_free_data() will free only text_ptr.key. Similarly,
+if you transfer responsibility for free'ing text_ptr from libpng to your
+application, your application must not separately free those members.
+For a more compact example of writing a PNG image, see the file example.c.
+
+.SH V. Modifying/Customizing libpng:
+
+There are two issues here. The first is changing how libpng does
+standard things like memory allocation, input/output, and error handling.
+The second deals with more complicated things like adding new chunks,
+adding new transformations, and generally changing how libpng works.
+Both of those are compile-time issues; that is, they are generally
+determined at the time the code is written, and there is rarely a need
+to provide the user with a means of changing them.
+
+Memory allocation, input/output, and error handling
+
+All of the memory allocation, input/output, and error handling in libpng
+goes through callbacks that are user-settable. The default routines are
+in pngmem.c, pngrio.c, pngwio.c, and pngerror.c, respectively. To change
+these functions, call the appropriate png_set_*_fn() function.
+
+Memory allocation is done through the functions png_malloc(), png_calloc(),
+and png_free(). These currently just call the standard C functions.
+png_calloc() calls png_malloc() and then png_memset() to clear the newly
+allocated memory to zero. If your pointers can't access more then 64K
+at a time, you will want to set MAXSEG_64K in zlib.h. Since it is
+unlikely that the method of handling memory allocation on a platform
+will change between applications, these functions must be modified in
+the library at compile time. If you prefer to use a different method
+of allocating and freeing data, you can use png_create_read_struct_2() or
+png_create_write_struct_2() to register your own functions as described
+above. These functions also provide a void pointer that can be retrieved
+via
+
+ mem_ptr=png_get_mem_ptr(png_ptr);
+
+Your replacement memory functions must have prototypes as follows:
+
+ png_voidp malloc_fn(png_structp png_ptr,
+ png_size_t size);
+ void free_fn(png_structp png_ptr, png_voidp ptr);
+
+Your malloc_fn() must return NULL in case of failure. The png_malloc()
+function will normally call png_error() if it receives a NULL from the
+system memory allocator or from your replacement malloc_fn().
+
+Your free_fn() will never be called with a NULL ptr, since libpng's
+png_free() checks for NULL before calling free_fn().
+
+Input/Output in libpng is done through png_read() and png_write(),
+which currently just call fread() and fwrite(). The FILE * is stored in
+png_struct and is initialized via png_init_io(). If you wish to change
+the method of I/O, the library supplies callbacks that you can set
+through the function png_set_read_fn() and png_set_write_fn() at run
+time, instead of calling the png_init_io() function. These functions
+also provide a void pointer that can be retrieved via the function
+png_get_io_ptr(). For example:
+
+ png_set_read_fn(png_structp read_ptr,
+ voidp read_io_ptr, png_rw_ptr read_data_fn)
+
+ png_set_write_fn(png_structp write_ptr,
+ voidp write_io_ptr, png_rw_ptr write_data_fn,
+ png_flush_ptr output_flush_fn);
+
+ voidp read_io_ptr = png_get_io_ptr(read_ptr);
+ voidp write_io_ptr = png_get_io_ptr(write_ptr);
+
+The replacement I/O functions must have prototypes as follows:
+
+ void user_read_data(png_structp png_ptr,
+ png_bytep data, png_size_t length);
+ void user_write_data(png_structp png_ptr,
+ png_bytep data, png_size_t length);
+ void user_flush_data(png_structp png_ptr);
+
+The user_read_data() function is responsible for detecting and
+handling end-of-data errors.
+
+Supplying NULL for the read, write, or flush functions sets them back
+to using the default C stream functions, which expect the io_ptr to
+point to a standard *FILE structure. It is probably a mistake
+to use NULL for one of write_data_fn and output_flush_fn but not both
+of them, unless you have built libpng with PNG_NO_WRITE_FLUSH defined.
+It is an error to read from a write stream, and vice versa.
+
+Error handling in libpng is done through png_error() and png_warning().
+Errors handled through png_error() are fatal, meaning that png_error()
+should never return to its caller. Currently, this is handled via
+setjmp() and longjmp() (unless you have compiled libpng with
+PNG_SETJMP_NOT_SUPPORTED, in which case it is handled via PNG_ABORT()),
+but you could change this to do things like exit() if you should wish.
+
+On non-fatal errors, png_warning() is called
+to print a warning message, and then control returns to the calling code.
+By default png_error() and png_warning() print a message on stderr via
+fprintf() unless the library is compiled with PNG_NO_CONSOLE_IO defined
+(because you don't want the messages) or PNG_NO_STDIO defined (because
+fprintf() isn't available). If you wish to change the behavior of the error
+functions, you will need to set up your own message callbacks. These
+functions are normally supplied at the time that the png_struct is created.
+It is also possible to redirect errors and warnings to your own replacement
+functions after png_create_*_struct() has been called by calling:
+
+ png_set_error_fn(png_structp png_ptr,
+ png_voidp error_ptr, png_error_ptr error_fn,
+ png_error_ptr warning_fn);
+
+ png_voidp error_ptr = png_get_error_ptr(png_ptr);
+
+If NULL is supplied for either error_fn or warning_fn, then the libpng
+default function will be used, calling fprintf() and/or longjmp() if a
+problem is encountered. The replacement error functions should have
+parameters as follows:
+
+ void user_error_fn(png_structp png_ptr,
+ png_const_charp error_msg);
+ void user_warning_fn(png_structp png_ptr,
+ png_const_charp warning_msg);
+
+The motivation behind using setjmp() and longjmp() is the C++ throw and
+catch exception handling methods. This makes the code much easier to write,
+as there is no need to check every return code of every function call.
+However, there are some uncertainties about the status of local variables
+after a longjmp, so the user may want to be careful about doing anything
+after setjmp returns non-zero besides returning itself. Consult your
+compiler documentation for more details. For an alternative approach, you
+may wish to use the "cexcept" facility (see http://cexcept.sourceforge.net).
+
+.SS Custom chunks
+
+If you need to read or write custom chunks, you may need to get deeper
+into the libpng code. The library now has mechanisms for storing
+and writing chunks of unknown type; you can even declare callbacks
+for custom chunks. However, this may not be good enough if the
+library code itself needs to know about interactions between your
+chunk and existing `intrinsic' chunks.
+
+If you need to write a new intrinsic chunk, first read the PNG
+specification. Acquire a first level of understanding of how it works.
+Pay particular attention to the sections that describe chunk names,
+and look at how other chunks were designed, so you can do things
+similarly. Second, check out the sections of libpng that read and
+write chunks. Try to find a chunk that is similar to yours and use
+it as a template. More details can be found in the comments inside
+the code. It is best to handle unknown chunks in a generic method,
+via callback functions, instead of by modifying libpng functions.
+
+If you wish to write your own transformation for the data, look through
+the part of the code that does the transformations, and check out some of
+the simpler ones to get an idea of how they work. Try to find a similar
+transformation to the one you want to add and copy off of it. More details
+can be found in the comments inside the code itself.
+
+.SS Configuring for 16 bit platforms
+
+You will want to look into zconf.h to tell zlib (and thus libpng) that
+it cannot allocate more then 64K at a time. Even if you can, the memory
+won't be accessible. So limit zlib and libpng to 64K by defining MAXSEG_64K.
+
+.SS Configuring for DOS
+
+For DOS users who only have access to the lower 640K, you will
+have to limit zlib's memory usage via a png_set_compression_mem_level()
+call. See zlib.h or zconf.h in the zlib library for more information.
+
+.SS Configuring for Medium Model
+
+Libpng's support for medium model has been tested on most of the popular
+compilers. Make sure MAXSEG_64K gets defined, USE_FAR_KEYWORD gets
+defined, and FAR gets defined to far in pngconf.h, and you should be
+all set. Everything in the library (except for zlib's structure) is
+expecting far data. You must use the typedefs with the p or pp on
+the end for pointers (or at least look at them and be careful). Make
+note that the rows of data are defined as png_bytepp, which is an
+unsigned char far * far *.
+
+.SS Configuring for gui/windowing platforms:
+
+You will need to write new error and warning functions that use the GUI
+interface, as described previously, and set them to be the error and
+warning functions at the time that png_create_*_struct() is called,
+in order to have them available during the structure initialization.
+They can be changed later via png_set_error_fn(). On some compilers,
+you may also have to change the memory allocators (png_malloc, etc.).
+
+.SS Configuring for compiler xxx:
+
+All includes for libpng are in pngconf.h. If you need to add, change
+or delete an include, this is the place to do it.
+The includes that are not needed outside libpng are placed in pngpriv.h,
+which is only used by the routines inside libpng itself.
+The files in libpng proper only include pngpriv.h and png.h, which
+in turn includes pngconf.h.
+
+.SS Configuring zlib:
+
+There are special functions to configure the compression. Perhaps the
+most useful one changes the compression level, which currently uses
+input compression values in the range 0 - 9. The library normally
+uses the default compression level (Z_DEFAULT_COMPRESSION = 6). Tests
+have shown that for a large majority of images, compression values in
+the range 3-6 compress nearly as well as higher levels, and do so much
+faster. For online applications it may be desirable to have maximum speed
+(Z_BEST_SPEED = 1). With versions of zlib after v0.99, you can also
+specify no compression (Z_NO_COMPRESSION = 0), but this would create
+files larger than just storing the raw bitmap. You can specify the
+compression level by calling:
+
+ png_set_compression_level(png_ptr, level);
+
+Another useful one is to reduce the memory level used by the library.
+The memory level defaults to 8, but it can be lowered if you are
+short on memory (running DOS, for example, where you only have 640K).
+Note that the memory level does have an effect on compression; among
+other things, lower levels will result in sections of incompressible
+data being emitted in smaller stored blocks, with a correspondingly
+larger relative overhead of up to 15% in the worst case.
+
+ png_set_compression_mem_level(png_ptr, level);
+
+The other functions are for configuring zlib. They are not recommended
+for normal use and may result in writing an invalid PNG file. See
+zlib.h for more information on what these mean.
+
+ png_set_compression_strategy(png_ptr,
+ strategy);
+ png_set_compression_window_bits(png_ptr,
+ window_bits);
+ png_set_compression_method(png_ptr, method);
+ png_set_compression_buffer_size(png_ptr, size);
+
+.SS Controlling row filtering
+
+If you want to control whether libpng uses filtering or not, which
+filters are used, and how it goes about picking row filters, you
+can call one of these functions. The selection and configuration
+of row filters can have a significant impact on the size and
+encoding speed and a somewhat lesser impact on the decoding speed
+of an image. Filtering is enabled by default for RGB and grayscale
+images (with and without alpha), but not for paletted images nor
+for any images with bit depths less than 8 bits/pixel.
+
+The 'method' parameter sets the main filtering method, which is
+currently only '0' in the PNG 1.2 specification. The 'filters'
+parameter sets which filter(s), if any, should be used for each
+scanline. Possible values are PNG_ALL_FILTERS and PNG_NO_FILTERS
+to turn filtering on and off, respectively.
+
+Individual filter types are PNG_FILTER_NONE, PNG_FILTER_SUB,
+PNG_FILTER_UP, PNG_FILTER_AVG, PNG_FILTER_PAETH, which can be bitwise
+ORed together with '|' to specify one or more filters to use.
+These filters are described in more detail in the PNG specification.
+If you intend to change the filter type during the course of writing
+the image, you should start with flags set for all of the filters
+you intend to use so that libpng can initialize its internal
+structures appropriately for all of the filter types. (Note that this
+means the first row must always be adaptively filtered, because libpng
+currently does not allocate the filter buffers until png_write_row()
+is called for the first time.)
+
+ filters = PNG_FILTER_NONE | PNG_FILTER_SUB
+ PNG_FILTER_UP | PNG_FILTER_AVG |
+ PNG_FILTER_PAETH | PNG_ALL_FILTERS;
+
+ png_set_filter(png_ptr, PNG_FILTER_TYPE_BASE,
+ filters);
+ The second parameter can also be
+ PNG_INTRAPIXEL_DIFFERENCING if you are
+ writing a PNG to be embedded in a MNG
+ datastream. This parameter must be the
+ same as the value of filter_method used
+ in png_set_IHDR().
+
+It is also possible to influence how libpng chooses from among the
+available filters. This is done in one or both of two ways - by
+telling it how important it is to keep the same filter for successive
+rows, and by telling it the relative computational costs of the filters.
+
+ double weights[3] = {1.5, 1.3, 1.1},
+ costs[PNG_FILTER_VALUE_LAST] =
+ {1.0, 1.3, 1.3, 1.5, 1.7};
+
+ png_set_filter_heuristics(png_ptr,
+ PNG_FILTER_HEURISTIC_WEIGHTED, 3,
+ weights, costs);
+
+The weights are multiplying factors that indicate to libpng that the
+row filter should be the same for successive rows unless another row filter
+is that many times better than the previous filter. In the above example,
+if the previous 3 filters were SUB, SUB, NONE, the SUB filter could have a
+"sum of absolute differences" 1.5 x 1.3 times higher than other filters
+and still be chosen, while the NONE filter could have a sum 1.1 times
+higher than other filters and still be chosen. Unspecified weights are
+taken to be 1.0, and the specified weights should probably be declining
+like those above in order to emphasize recent filters over older filters.
+
+The filter costs specify for each filter type a relative decoding cost
+to be considered when selecting row filters. This means that filters
+with higher costs are less likely to be chosen over filters with lower
+costs, unless their "sum of absolute differences" is that much smaller.
+The costs do not necessarily reflect the exact computational speeds of
+the various filters, since this would unduly influence the final image
+size.
+
+Note that the numbers above were invented purely for this example and
+are given only to help explain the function usage. Little testing has
+been done to find optimum values for either the costs or the weights.
+
+.SS Removing unwanted object code
+
+There are a bunch of #define's in pngconf.h that control what parts of
+libpng are compiled. All the defines end in _SUPPORTED. If you are
+never going to use a capability, you can change the #define to #undef
+before recompiling libpng and save yourself code and data space, or
+you can turn off individual capabilities with defines that begin with
+PNG_NO_.
+
+You can also turn all of the transforms and ancillary chunk capabilities
+off en masse with compiler directives that define
+PNG_NO_READ[or WRITE]_TRANSFORMS, or PNG_NO_READ[or WRITE]_ANCILLARY_CHUNKS,
+or all four,
+along with directives to turn on any of the capabilities that you do
+want. The PNG_NO_READ[or WRITE]_TRANSFORMS directives disable the extra
+transformations but still leave the library fully capable of reading
+and writing PNG files with all known public chunks. Use of the
+PNG_NO_READ[or WRITE]_ANCILLARY_CHUNKS directive produces a library
+that is incapable of reading or writing ancillary chunks. If you are
+not using the progressive reading capability, you can turn that off
+with PNG_NO_PROGRESSIVE_READ (don't confuse this with the INTERLACING
+capability, which you'll still have).
+
+All the reading and writing specific code are in separate files, so the
+linker should only grab the files it needs. However, if you want to
+make sure, or if you are building a stand alone library, all the
+reading files start with pngr and all the writing files start with
+pngw. The files that don't match either (like png.c, pngtrans.c, etc.)
+are used for both reading and writing, and always need to be included.
+The progressive reader is in pngpread.c
+
+If you are creating or distributing a dynamically linked library (a .so
+or DLL file), you should not remove or disable any parts of the library,
+as this will cause applications linked with different versions of the
+library to fail if they call functions not available in your library.
+The size of the library itself should not be an issue, because only
+those sections that are actually used will be loaded into memory.
+
+.SS Requesting debug printout
+
+The macro definition PNG_DEBUG can be used to request debugging
+printout. Set it to an integer value in the range 0 to 3. Higher
+numbers result in increasing amounts of debugging information. The
+information is printed to the "stderr" file, unless another file
+name is specified in the PNG_DEBUG_FILE macro definition.
+
+When PNG_DEBUG > 0, the following functions (macros) become available:
+
+ png_debug(level, message)
+ png_debug1(level, message, p1)
+ png_debug2(level, message, p1, p2)
+
+in which "level" is compared to PNG_DEBUG to decide whether to print
+the message, "message" is the formatted string to be printed,
+and p1 and p2 are parameters that are to be embedded in the string
+according to printf-style formatting directives. For example,
+
+ png_debug1(2, "foo=%d\n", foo);
+
+is expanded to
+
+ if(PNG_DEBUG > 2)
+ fprintf(PNG_DEBUG_FILE, "foo=%d\n", foo);
+
+When PNG_DEBUG is defined but is zero, the macros aren't defined, but you
+can still use PNG_DEBUG to control your own debugging:
+
+ #ifdef PNG_DEBUG
+ fprintf(stderr, ...
+ #endif
+
+When PNG_DEBUG = 1, the macros are defined, but only png_debug statements
+having level = 0 will be printed. There aren't any such statements in
+this version of libpng, but if you insert some they will be printed.
+
+.SH VI. MNG support
+
+The MNG specification (available at http://www.libpng.org/pub/mng) allows
+certain extensions to PNG for PNG images that are embedded in MNG datastreams.
+Libpng can support some of these extensions. To enable them, use the
+png_permit_mng_features() function:
+
+ feature_set = png_permit_mng_features(png_ptr, mask)
+ mask is a png_uint_32 containing the bitwise OR of the
+ features you want to enable. These include
+ PNG_FLAG_MNG_EMPTY_PLTE
+ PNG_FLAG_MNG_FILTER_64
+ PNG_ALL_MNG_FEATURES
+ feature_set is a png_uint_32 that is the bitwise AND of
+ your mask with the set of MNG features that is
+ supported by the version of libpng that you are using.
+
+It is an error to use this function when reading or writing a standalone
+PNG file with the PNG 8-byte signature. The PNG datastream must be wrapped
+in a MNG datastream. As a minimum, it must have the MNG 8-byte signature
+and the MHDR and MEND chunks. Libpng does not provide support for these
+or any other MNG chunks; your application must provide its own support for
+them. You may wish to consider using libmng (available at
+http://www.libmng.com) instead.
+
+.SH VII. Changes to Libpng from version 0.88
+
+It should be noted that versions of libpng later than 0.96 are not
+distributed by the original libpng author, Guy Schalnat, nor by
+Andreas Dilger, who had taken over from Guy during 1996 and 1997, and
+distributed versions 0.89 through 0.96, but rather by another member
+of the original PNG Group, Glenn Randers-Pehrson. Guy and Andreas are
+still alive and well, but they have moved on to other things.
+
+The old libpng functions png_read_init(), png_write_init(),
+png_info_init(), png_read_destroy(), and png_write_destroy() have been
+moved to PNG_INTERNAL in version 0.95 to discourage their use. These
+functions will be removed from libpng version 2.0.0.
+
+The preferred method of creating and initializing the libpng structures is
+via the png_create_read_struct(), png_create_write_struct(), and
+png_create_info_struct() because they isolate the size of the structures
+from the application, allow version error checking, and also allow the
+use of custom error handling routines during the initialization, which
+the old functions do not. The functions png_read_destroy() and
+png_write_destroy() do not actually free the memory that libpng
+allocated for these structs, but just reset the data structures, so they
+can be used instead of png_destroy_read_struct() and
+png_destroy_write_struct() if you feel there is too much system overhead
+allocating and freeing the png_struct for each image read.
+
+Setting the error callbacks via png_set_message_fn() before
+png_read_init() as was suggested in libpng-0.88 is no longer supported
+because this caused applications that do not use custom error functions
+to fail if the png_ptr was not initialized to zero. It is still possible
+to set the error callbacks AFTER png_read_init(), or to change them with
+png_set_error_fn(), which is essentially the same function, but with a new
+name to force compilation errors with applications that try to use the old
+method.
+
+Starting with version 1.0.7, you can find out which version of the library
+you are using at run-time:
+
+ png_uint_32 libpng_vn = png_access_version_number();
+
+The number libpng_vn is constructed from the major version, minor
+version with leading zero, and release number with leading zero,
+(e.g., libpng_vn for version 1.0.7 is 10007).
+
+You can also check which version of png.h you used when compiling your
+application:
+
+ png_uint_32 application_vn = PNG_LIBPNG_VER;
+
+.SH VIII. Changes to Libpng from version 1.0.x to 1.2.x
+
+Support for user memory management was enabled by default. To
+accomplish this, the functions png_create_read_struct_2(),
+png_create_write_struct_2(), png_set_mem_fn(), png_get_mem_ptr(),
+png_malloc_default(), and png_free_default() were added.
+
+Support for the iTXt chunk has been enabled by default as of
+version 1.2.41.
+
+Support for certain MNG features was enabled.
+
+Support for numbered error messages was added. However, we never got
+around to actually numbering the error messages. The function
+png_set_strip_error_numbers() was added (Note: the prototype for this
+function was inadvertently removed from png.h in PNG_NO_ASSEMBLER_CODE
+builds of libpng-1.2.15. It was restored in libpng-1.2.36).
+
+The png_malloc_warn() function was added at libpng-1.2.3. This issues
+a png_warning and returns NULL instead of aborting when it fails to
+acquire the requested memory allocation.
+
+Support for setting user limits on image width and height was enabled
+by default. The functions png_set_user_limits(), png_get_user_width_max(),
+and png_get_user_height_max() were added at libpng-1.2.6.
+
+The png_set_add_alpha() function was added at libpng-1.2.7.
+
+The function png_set_expand_gray_1_2_4_to_8() was added at libpng-1.2.9.
+Unlike png_set_gray_1_2_4_to_8(), the new function does not expand the
+tRNS chunk to alpha. The png_set_gray_1_2_4_to_8() function is
+deprecated.
+
+A number of macro definitions in support of runtime selection of
+assembler code features (especially Intel MMX code support) were
+added at libpng-1.2.0:
+
+ PNG_ASM_FLAG_MMX_SUPPORT_COMPILED
+ PNG_ASM_FLAG_MMX_SUPPORT_IN_CPU
+ PNG_ASM_FLAG_MMX_READ_COMBINE_ROW
+ PNG_ASM_FLAG_MMX_READ_INTERLACE
+ PNG_ASM_FLAG_MMX_READ_FILTER_SUB
+ PNG_ASM_FLAG_MMX_READ_FILTER_UP
+ PNG_ASM_FLAG_MMX_READ_FILTER_AVG
+ PNG_ASM_FLAG_MMX_READ_FILTER_PAETH
+ PNG_ASM_FLAGS_INITIALIZED
+ PNG_MMX_READ_FLAGS
+ PNG_MMX_FLAGS
+ PNG_MMX_WRITE_FLAGS
+ PNG_MMX_FLAGS
+
+We added the following functions in support of runtime
+selection of assembler code features:
+
+ png_get_mmx_flagmask()
+ png_set_mmx_thresholds()
+ png_get_asm_flags()
+ png_get_mmx_bitdepth_threshold()
+ png_get_mmx_rowbytes_threshold()
+ png_set_asm_flags()
+
+We replaced all of these functions with simple stubs in libpng-1.2.20,
+when the Intel assembler code was removed due to a licensing issue.
+
+These macros are deprecated:
+
+ PNG_READ_TRANSFORMS_NOT_SUPPORTED
+ PNG_PROGRESSIVE_READ_NOT_SUPPORTED
+ PNG_NO_SEQUENTIAL_READ_SUPPORTED
+ PNG_WRITE_TRANSFORMS_NOT_SUPPORTED
+ PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED
+ PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED
+
+They have been replaced, respectively, by:
+
+ PNG_NO_READ_TRANSFORMS
+ PNG_NO_PROGRESSIVE_READ
+ PNG_NO_SEQUENTIAL_READ
+ PNG_NO_WRITE_TRANSFORMS
+ PNG_NO_READ_ANCILLARY_CHUNKS
+ PNG_NO_WRITE_ANCILLARY_CHUNKS
+
+PNG_MAX_UINT was replaced with PNG_UINT_31_MAX. It has been
+deprecated since libpng-1.0.16 and libpng-1.2.6.
+
+The function
+ png_check_sig(sig, num)
+was replaced with
+ !png_sig_cmp(sig, 0, num)
+It has been deprecated since libpng-0.90.
+
+The function
+ png_set_gray_1_2_4_to_8()
+which also expands tRNS to alpha was replaced with
+ png_set_expand_gray_1_2_4_to_8()
+which does not. It has been deprecated since libpng-1.0.18 and 1.2.9.
+
+.SH IX. Changes to Libpng from version 1.0.x/1.2.x to 1.4.x
+
+Private libpng prototypes and macro definitions were moved from
+png.h and pngconf.h into a new pngpriv.h header file.
+
+Functions png_set_benign_errors(), png_benign_error(), and
+png_chunk_benign_error() were added.
+
+Support for setting the maximum amount of memory that the application
+will allocate for reading chunks was added, as a security measure.
+The functions png_set_chunk_cache_max() and png_get_chunk_cache_max()
+were added to the library.
+
+We implemented support for I/O states by adding png_ptr member io_state
+and functions png_get_io_chunk_name() and png_get_io_state() in pngget.c
+
+We added PNG_TRANSFORM_GRAY_TO_RGB to the available high-level
+input transforms.
+
+Checking for and reporting of errors in the IHDR chunk is more thorough.
+
+Support for global arrays was removed, to improve thread safety.
+
+Some obsolete/deprecated macros and functions have been removed.
+
+Typecasted NULL definitions such as
+ #define png_voidp_NULL (png_voidp)NULL
+were eliminated. If you used these in your application, just use
+NULL instead.
+
+The png_struct and info_struct members "trans" and "trans_values" were
+changed to "trans_alpha" and "trans_color", respectively.
+
+The obsolete, unused pnggccrd.c and pngvcrd.c files and related makefiles
+were removed.
+
+The PNG_1_0_X and PNG_1_2_X macros were eliminated.
+
+The PNG_LEGACY_SUPPORTED macro was eliminated.
+
+Many WIN32_WCE #ifdefs were removed.
+
+The functions png_read_init(info_ptr), png_write_init(info_ptr),
+png_info_init(info_ptr), png_read_destroy(), and png_write_destroy()
+have been removed. They have been deprecated since libpng-0.95.
+
+The png_permit_empty_plte() was removed. It has been deprecated
+since libpng-1.0.9. Use png_permit_mng_features() instead.
+
+We removed the obsolete stub functions png_get_mmx_flagmask(),
+png_set_mmx_thresholds(), png_get_asm_flags(),
+png_get_mmx_bitdepth_threshold(), png_get_mmx_rowbytes_threshold(),
+png_set_asm_flags(), and png_mmx_supported()
+
+We removed the obsolete png_check_sig(), png_memcpy_check(), and
+png_memset_check() functions. Instead use !png_sig_cmp(), png_memcpy(),
+and png_memset(), respectively.
+
+The function png_set_gray_1_2_4_to_8() was removed. It has been
+deprecated since libpng-1.0.18 and 1.2.9, when it was replaced with
+png_set_expand_gray_1_2_4_to_8() because the former function also
+expanded palette images.
+
+We changed the prototype for png_malloc() from
+ png_malloc(png_structp png_ptr, png_uint_32 size)
+to
+ png_malloc(png_structp png_ptr, png_alloc_size_t size)
+
+The png_calloc() function was added and is used in place of
+of "png_malloc(); png_memset();" except in the case in png_read_png()
+where the array consists of pointers; in this case a "for" loop is used
+after the png_malloc() to set the pointers to NULL, to give robust.
+behavior in case the application runs out of memory part-way through
+the process.
+
+We changed the prototypes of png_get_compression_buffer_size() and
+png_set_compression_buffer_size() to work with png_size_t instead of
+png_uint_32.
+
+Support for numbered error messages was removed by default, since we
+never got around to actually numbering the error messages. The function
+png_set_strip_error_numbers() was removed from the library by default.
+
+The png_zalloc() and png_zfree() functions are no longer exported.
+The png_zalloc() function no longer zeroes out the memory that it
+allocates.
+
+We removed the trailing '.' from the warning and error messages.
+
+.SH X. Detecting libpng
+
+The png_get_io_ptr() function has been present since libpng-0.88, has never
+changed, and is unaffected by conditional compilation macros. It is the
+best choice for use in configure scripts for detecting the presence of any
+libpng version since 0.88. In an autoconf "configure.in" you could use
+
+ AC_CHECK_LIB(png, png_get_io_ptr, ...
+
+.SH XI. Source code repository
+
+Since about February 2009, version 1.2.34, libpng has been under "git" source
+control. The git repository was built from old libpng-x.y.z.tar.gz files
+going back to version 0.70. You can access the git repository (read only)
+at
+
+ git://libpng.git.sourceforge.net/gitroot/libpng
+
+or you can browse it via "gitweb" at
+
+ http://libpng.git.sourceforge.net/git/gitweb.cgi?p=libpng
+
+Patches can be sent to glennrp at users.sourceforge.net or to
+png-mng-implement at lists.sourceforge.net or you can upload them to
+the libpng bug tracker at
+
+ http://libpng.sourceforge.net
+
+.SH XII. Coding style
+
+Our coding style is similar to the "Allman" style, with curly
+braces on separate lines:
+
+ if (condition)
+ {
+ action;
+ }
+
+ else if (another condition)
+ {
+ another action;
+ }
+
+The braces can be omitted from simple one-line actions:
+
+ if (condition)
+ return (0);
+
+We use 3-space indentation, except for continued statements which
+are usually indented the same as the first line of the statement
+plus four more spaces.
+
+For macro definitions we use 2-space indentation, always leaving the "#"
+in the first column.
+
+ #ifndef PNG_NO_FEATURE
+ # ifndef PNG_FEATURE_SUPPORTED
+ # define PNG_FEATURE_SUPPORTED
+ # endif
+ #endif
+
+Comments appear with the leading "/*" at the same indentation as
+the statement that follows the comment:
+
+ /* Single-line comment */
+ statement;
+
+ /* Multiple-line
+ * comment
+ */
+ statement;
+
+Very short comments can be placed at the end of the statement
+to which they pertain:
+
+ statement; /* comment */
+
+We don't use C++ style ("//") comments. We have, however,
+used them in the past in some now-abandoned MMX assembler
+code.
+
+Functions and their curly braces are not indented, and
+exported functions are marked with PNGAPI:
+
+ /* This is a public function that is visible to
+ * application programers. It does thus-and-so.
+ */
+ void PNGAPI
+ png_exported_function(png_ptr, png_info, foo)
+ {
+ body;
+ }
+
+The prototypes for all exported functions appear in png.h,
+above the comment that says
+
+ /* Maintainer: Put new public prototypes here ... */
+
+We mark all non-exported functions with "/* PRIVATE */"":
+
+ void /* PRIVATE */
+ png_non_exported_function(png_ptr, png_info, foo)
+ {
+ body;
+ }
+
+The prototypes for non-exported functions (except for those in
+pngtest) appear in
+pngpriv.h
+above the comment that says
+
+ /* Maintainer: Put new private prototypes here ^ and in libpngpf.3 */
+
+The names of all exported functions and variables begin
+with "png_", and all publicly visible C preprocessor
+macros begin with "PNG_".
+
+We put a space after each comma and after each semicolon
+in "for" statments, and we put spaces before and after each
+C binary operator and after "for" or "while". We don't
+put a space between a typecast and the expression being
+cast, nor do we put one between a function name and the
+left parenthesis that follows it:
+
+ for (i = 2; i > 0; --i)
+ y[i] = a(x) + (int)b;
+
+We prefer #ifdef and #ifndef to #if defined() and if !defined()
+when there is only one macro being tested.
+
+We do not use the TAB character for indentation in the C sources.
+
+Lines do not exceed 80 characters.
+
+Other rules can be inferred by inspecting the libpng source.
+
+.SH XIII. Y2K Compliance in libpng
+
+January 3, 2010
+
+Since the PNG Development group is an ad-hoc body, we can't make
+an official declaration.
+
+This is your unofficial assurance that libpng from version 0.71 and
+upward through 1.4.0 are Y2K compliant. It is my belief that earlier
+versions were also Y2K compliant.
+
+Libpng only has three year fields. One is a 2-byte unsigned integer that
+will hold years up to 65535. The other two hold the date in text
+format, and will hold years up to 9999.
+
+The integer is
+ "png_uint_16 year" in png_time_struct.
+
+The strings are
+ "png_charp time_buffer" in png_struct and
+ "near_time_buffer", which is a local character string in png.c.
+
+There are seven time-related functions:
+
+ png_convert_to_rfc_1123() in png.c
+ (formerly png_convert_to_rfc_1152() in error)
+ png_convert_from_struct_tm() in pngwrite.c, called
+ in pngwrite.c
+ png_convert_from_time_t() in pngwrite.c
+ png_get_tIME() in pngget.c
+ png_handle_tIME() in pngrutil.c, called in pngread.c
+ png_set_tIME() in pngset.c
+ png_write_tIME() in pngwutil.c, called in pngwrite.c
+
+All appear to handle dates properly in a Y2K environment. The
+png_convert_from_time_t() function calls gmtime() to convert from system
+clock time, which returns (year - 1900), which we properly convert to
+the full 4-digit year. There is a possibility that applications using
+libpng are not passing 4-digit years into the png_convert_to_rfc_1123()
+function, or that they are incorrectly passing only a 2-digit year
+instead of "year - 1900" into the png_convert_from_struct_tm() function,
+but this is not under our control. The libpng documentation has always
+stated that it works with 4-digit years, and the APIs have been
+documented as such.
+
+The tIME chunk itself is also Y2K compliant. It uses a 2-byte unsigned
+integer to hold the year, and can hold years as large as 65535.
+
+zlib, upon which libpng depends, is also Y2K compliant. It contains
+no date-related code.
+
+
+ Glenn Randers-Pehrson
+ libpng maintainer
+ PNG Development Group
+
+.SH NOTE
+
+Note about libpng version numbers:
+
+Due to various miscommunications, unforeseen code incompatibilities
+and occasional factors outside the authors' control, version numbering
+on the library has not always been consistent and straightforward.
+The following table summarizes matters since version 0.89c, which was
+the first widely used release:
+
+ source png.h png.h shared-lib
+ version string int version
+ ------- ------ ----- ----------
+ 0.89c ("beta 3") 0.89 89 1.0.89
+ 0.90 ("beta 4") 0.90 90 0.90
+ 0.95 ("beta 5") 0.95 95 0.95
+ 0.96 ("beta 6") 0.96 96 0.96
+ 0.97b ("beta 7") 1.00.97 97 1.0.1
+ 0.97c 0.97 97 2.0.97
+ 0.98 0.98 98 2.0.98
+ 0.99 0.99 98 2.0.99
+ 0.99a-m 0.99 99 2.0.99
+ 1.00 1.00 100 2.1.0
+ 1.0.0 1.0.0 100 2.1.0
+ 1.0.0 (from here on, the 100 2.1.0
+ 1.0.1 png.h string is 10001 2.1.0
+ 1.0.1a-e identical to the 10002 from here on, the
+ 1.0.2 source version) 10002 shared library is 2.V
+ 1.0.2a-b 10003 where V is the source
+ 1.0.1 10001 code version except as
+ 1.0.1a-e 10002 2.1.0.1a-e noted.
+ 1.0.2 10002 2.1.0.2
+ 1.0.2a-b 10003 2.1.0.2a-b
+ 1.0.3 10003 2.1.0.3
+ 1.0.3a-d 10004 2.1.0.3a-d
+ 1.0.4 10004 2.1.0.4
+ 1.0.4a-f 10005 2.1.0.4a-f
+ 1.0.5 (+ 2 patches) 10005 2.1.0.5
+ 1.0.5a-d 10006 2.1.0.5a-d
+ 1.0.5e-r 10100 2.1.0.5e-r
+ 1.0.5s-v 10006 2.1.0.5s-v
+ 1.0.6 (+ 3 patches) 10006 2.1.0.6
+ 1.0.6d-g 10007 2.1.0.6d-g
+ 1.0.6h 10007 10.6h
+ 1.0.6i 10007 10.6i
+ 1.0.6j 10007 2.1.0.6j
+ 1.0.7beta11-14 DLLNUM 10007 2.1.0.7beta11-14
+ 1.0.7beta15-18 1 10007 2.1.0.7beta15-18
+ 1.0.7rc1-2 1 10007 2.1.0.7rc1-2
+ 1.0.7 1 10007 2.1.0.7
+ 1.0.8beta1-4 1 10008 2.1.0.8beta1-4
+ 1.0.8rc1 1 10008 2.1.0.8rc1
+ 1.0.8 1 10008 2.1.0.8
+ 1.0.9beta1-6 1 10009 2.1.0.9beta1-6
+ 1.0.9rc1 1 10009 2.1.0.9rc1
+ 1.0.9beta7-10 1 10009 2.1.0.9beta7-10
+ 1.0.9rc2 1 10009 2.1.0.9rc2
+ 1.0.9 1 10009 2.1.0.9
+ 1.0.10beta1 1 10010 2.1.0.10beta1
+ 1.0.10rc1 1 10010 2.1.0.10rc1
+ 1.0.10 1 10010 2.1.0.10
+ 1.0.11beta1-3 1 10011 2.1.0.11beta1-3
+ 1.0.11rc1 1 10011 2.1.0.11rc1
+ 1.0.11 1 10011 2.1.0.11
+ 1.0.12beta1-2 2 10012 2.1.0.12beta1-2
+ 1.0.12rc1 2 10012 2.1.0.12rc1
+ 1.0.12 2 10012 2.1.0.12
+ 1.1.0a-f - 10100 2.1.1.0a-f abandoned
+ 1.2.0beta1-2 2 10200 2.1.2.0beta1-2
+ 1.2.0beta3-5 3 10200 3.1.2.0beta3-5
+ 1.2.0rc1 3 10200 3.1.2.0rc1
+ 1.2.0 3 10200 3.1.2.0
+ 1.2.1beta-4 3 10201 3.1.2.1beta1-4
+ 1.2.1rc1-2 3 10201 3.1.2.1rc1-2
+ 1.2.1 3 10201 3.1.2.1
+ 1.2.2beta1-6 12 10202 12.so.0.1.2.2beta1-6
+ 1.0.13beta1 10 10013 10.so.0.1.0.13beta1
+ 1.0.13rc1 10 10013 10.so.0.1.0.13rc1
+ 1.2.2rc1 12 10202 12.so.0.1.2.2rc1
+ 1.0.13 10 10013 10.so.0.1.0.13
+ 1.2.2 12 10202 12.so.0.1.2.2
+ 1.2.3rc1-6 12 10203 12.so.0.1.2.3rc1-6
+ 1.2.3 12 10203 12.so.0.1.2.3
+ 1.2.4beta1-3 13 10204 12.so.0.1.2.4beta1-3
+ 1.2.4rc1 13 10204 12.so.0.1.2.4rc1
+ 1.0.14 10 10014 10.so.0.1.0.14
+ 1.2.4 13 10204 12.so.0.1.2.4
+ 1.2.5beta1-2 13 10205 12.so.0.1.2.5beta1-2
+ 1.0.15rc1 10 10015 10.so.0.1.0.15rc1
+ 1.0.15 10 10015 10.so.0.1.0.15
+ 1.2.5 13 10205 12.so.0.1.2.5
+ 1.2.6beta1-4 13 10206 12.so.0.1.2.6beta1-4
+ 1.2.6rc1-5 13 10206 12.so.0.1.2.6rc1-5
+ 1.0.16 10 10016 10.so.0.1.0.16
+ 1.2.6 13 10206 12.so.0.1.2.6
+ 1.2.7beta1-2 13 10207 12.so.0.1.2.7beta1-2
+ 1.0.17rc1 10 10017 12.so.0.1.0.17rc1
+ 1.2.7rc1 13 10207 12.so.0.1.2.7rc1
+ 1.0.17 10 10017 12.so.0.1.0.17
+ 1.2.7 13 10207 12.so.0.1.2.7
+ 1.2.8beta1-5 13 10208 12.so.0.1.2.8beta1-5
+ 1.0.18rc1-5 10 10018 12.so.0.1.0.18rc1-5
+ 1.2.8rc1-5 13 10208 12.so.0.1.2.8rc1-5
+ 1.0.18 10 10018 12.so.0.1.0.18
+ 1.2.8 13 10208 12.so.0.1.2.8
+ 1.2.9beta1-3 13 10209 12.so.0.1.2.9beta1-3
+ 1.2.9beta4-11 13 10209 12.so.0.9[.0]
+ 1.2.9rc1 13 10209 12.so.0.9[.0]
+ 1.2.9 13 10209 12.so.0.9[.0]
+ 1.2.10beta1-7 13 10210 12.so.0.10[.0]
+ 1.2.10rc1-2 13 10210 12.so.0.10[.0]
+ 1.2.10 13 10210 12.so.0.10[.0]
+ 1.4.0beta1-6 14 10400 14.so.0.0[.0]
+ 1.2.11beta1-4 13 10210 12.so.0.11[.0]
+ 1.4.0beta7-8 14 10400 14.so.0.0[.0]
+ 1.2.11 13 10211 12.so.0.11[.0]
+ 1.2.12 13 10212 12.so.0.12[.0]
+ 1.4.0beta9-14 14 10400 14.so.0.0[.0]
+ 1.2.13 13 10213 12.so.0.13[.0]
+ 1.4.0beta15-36 14 10400 14.so.0.0[.0]
+ 1.4.0beta37-87 14 10400 14.so.14.0[.0]
+ 1.4.0rc01 14 10400 14.so.14.0[.0]
+ 1.4.0beta88-109 14 10400 14.so.14.0[.0]
+ 1.4.0rc02-08 14 10400 14.so.14.0[.0]
+ 1.4.0 14 10400 14.so.14.0[.0]
+
+Henceforth the source version will match the shared-library minor
+and patch numbers; the shared-library major version number will be
+used for changes in backward compatibility, as it is intended. The
+PNG_PNGLIB_VER macro, which is not used within libpng but is available
+for applications, is an unsigned integer of the form xyyzz corresponding
+to the source version x.y.z (leading zeros in y and z). Beta versions
+were given the previous public release number plus a letter, until
+version 1.0.6j; from then on they were given the upcoming public
+release number plus "betaNN" or "rcN".
+
+.SH "SEE ALSO"
+libpngpf(3), png(5)
+.LP
+.IR libpng :
+.IP
+http://libpng.sourceforge.net (follow the [DOWNLOAD] link)
+http://www.libpng.org/pub/png
+
+.LP
+.IR zlib :
+.IP
+(generally) at the same location as
+.I libpng
+or at
+.br
+ftp://ftp.info-zip.org/pub/infozip/zlib
+
+.LP
+.IR PNG specification: RFC 2083
+.IP
+(generally) at the same location as
+.I libpng
+or at
+.br
+ftp://ds.internic.net/rfc/rfc2083.txt
+.br
+or (as a W3C Recommendation) at
+.br
+http://www.w3.org/TR/REC-png.html
+
+.LP
+In the case of any inconsistency between the PNG specification
+and this library, the specification takes precedence.
+
+.SH AUTHORS
+This man page: Glenn Randers-Pehrson
+<glennrp at users.sourceforge.net>
+
+The contributing authors would like to thank all those who helped
+with testing, bug fixes, and patience. This wouldn't have been
+possible without all of you.
+
+Thanks to Frank J. T. Wojcik for helping with the documentation.
+
+Libpng version 1.4.0 - January 3, 2010:
+Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
+Currently maintained by Glenn Randers-Pehrson (glennrp at users.sourceforge.net).
+
+Supported by the PNG development group
+.br
+png-mng-implement at lists.sf.net
+(subscription required; visit
+png-mng-implement at lists.sourceforge.net (subscription required; visit
+https://lists.sourceforge.net/lists/listinfo/png-mng-implement
+to subscribe).
+
+.SH COPYRIGHT NOTICE, DISCLAIMER, and LICENSE:
+
+(This copy of the libpng notices is provided for your convenience. In case of
+any discrepancy between this copy and the notices in the file png.h that is
+included in the libpng distribution, the latter shall prevail.)
+
+If you modify libpng you may insert additional notices immediately following
+this sentence.
+
+This code is released under the libpng license.
+
+libpng versions 1.2.6, August 15, 2004, through 1.4.0, January 3, 2010, are
+Copyright (c) 2004,2006-2007 Glenn Randers-Pehrson, and are
+distributed according to the same disclaimer and license as libpng-1.2.5
+with the following individual added to the list of Contributing Authors
+
+ Cosmin Truta
+
+libpng versions 1.0.7, July 1, 2000, through 1.2.5 - October 3, 2002, are
+Copyright (c) 2000-2002 Glenn Randers-Pehrson, and are
+distributed according to the same disclaimer and license as libpng-1.0.6
+with the following individuals added to the list of Contributing Authors
+
+ Simon-Pierre Cadieux
+ Eric S. Raymond
+ Gilles Vollant
+
+and with the following additions to the disclaimer:
+
+ There is no warranty against interference with your
+ enjoyment of the library or against infringement.
+ There is no warranty that our efforts or the library
+ will fulfill any of your particular purposes or needs.
+ This library is provided with all faults, and the entire
+ risk of satisfactory quality, performance, accuracy, and
+ effort is with the user.
+
+libpng versions 0.97, January 1998, through 1.0.6, March 20, 2000, are
+Copyright (c) 1998, 1999 Glenn Randers-Pehrson
+Distributed according to the same disclaimer and license as libpng-0.96,
+with the following individuals added to the list of Contributing Authors:
+
+ Tom Lane
+ Glenn Randers-Pehrson
+ Willem van Schaik
+
+libpng versions 0.89, June 1996, through 0.96, May 1997, are
+Copyright (c) 1996, 1997 Andreas Dilger
+Distributed according to the same disclaimer and license as libpng-0.88,
+with the following individuals added to the list of Contributing Authors:
+
+ John Bowler
+ Kevin Bracey
+ Sam Bushell
+ Magnus Holmgren
+ Greg Roelofs
+ Tom Tanner
+
+libpng versions 0.5, May 1995, through 0.88, January 1996, are
+Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
+
+For the purposes of this copyright and license, "Contributing Authors"
+is defined as the following set of individuals:
+
+ Andreas Dilger
+ Dave Martindale
+ Guy Eric Schalnat
+ Paul Schmidt
+ Tim Wegner
+
+The PNG Reference Library is supplied "AS IS". The Contributing Authors
+and Group 42, Inc. disclaim all warranties, expressed or implied,
+including, without limitation, the warranties of merchantability and of
+fitness for any purpose. The Contributing Authors and Group 42, Inc.
+assume no liability for direct, indirect, incidental, special, exemplary,
+or consequential damages, which may result from the use of the PNG
+Reference Library, even if advised of the possibility of such damage.
+
+Permission is hereby granted to use, copy, modify, and distribute this
+source code, or portions hereof, for any purpose, without fee, subject
+to the following restrictions:
+
+1. The origin of this source code must not be misrepresented.
+
+2. Altered versions must be plainly marked as such and
+ must not be misrepresented as being the original source.
+
+3. This Copyright notice may not be removed or altered from
+ any source or altered source distribution.
+
+The Contributing Authors and Group 42, Inc. specifically permit, without
+fee, and encourage the use of this source code as a component to
+supporting the PNG file format in commercial products. If you use this
+source code in a product, acknowledgment is not required but would be
+appreciated.
+
+
+A "png_get_copyright" function is available, for convenient use in "about"
+boxes and the like:
+
+ printf("%s",png_get_copyright(NULL));
+
+Also, the PNG logo (in PNG format, of course) is supplied in the
+files "pngbar.png" and "pngbar.jpg (88x31) and "pngnow.png" (98x31).
+
+Libpng is OSI Certified Open Source Software. OSI Certified Open Source is a
+certification mark of the Open Source Initiative.
+
+Glenn Randers-Pehrson
+glennrp at users.sourceforge.net
+January 3, 2010
+
+.\" end of man page
+
diff --git a/src/3rdparty/libpng/libpng.pc.in b/src/3rdparty/libpng/libpng.pc.in
new file mode 100644
index 0000000..3e7e2c5
--- /dev/null
+++ b/src/3rdparty/libpng/libpng.pc.in
@@ -0,0 +1,11 @@
+prefix=@prefix@
+exec_prefix=@exec_prefix@
+libdir=@libdir@
+includedir=@includedir@/libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@
+
+Name: libpng
+Description: Loads and saves PNG files
+Version: @PNGLIB_VERSION@
+Libs: -L${libdir} -lpng@PNGLIB_MAJOR@@PNGLIB_MINOR@
+Libs.private: @LIBS@
+Cflags: -I${includedir}
diff --git a/src/3rdparty/libpng/libpngpf.3 b/src/3rdparty/libpng/libpngpf.3
new file mode 100644
index 0000000..f323764
--- /dev/null
+++ b/src/3rdparty/libpng/libpngpf.3
@@ -0,0 +1,810 @@
+.TH LIBPNGPF 3 "January 3, 2010"
+.SH NAME
+libpng \- Portable Network Graphics (PNG) Reference Library 1.4.0
+(private functions)
+.SH SYNOPSIS
+\fB#include <png.h>\fP
+
+\fB#include \fI"pngpriv.h"
+
+\fI\fB
+
+\fBvoid png_64bit_product (long \fP\fIv1\fP\fB, long \fP\fIv2\fP\fB, unsigned long \fI*hi_product,
+
+\fBunsigned long \fI*lo_product\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_build_gamma_table (png_structp \fP\fIpng_ptr\fP\fB, png_byte \fIbit_depth\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_build_grayscale_palette (int \fP\fIbit_depth\fP\fB, png_colorp \fIpalette\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_calculate_crc (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIptr\fP\fB, png_size_t \fIlength\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBint png_check_cHRM_fixed (png_structp \fP\fIpng_ptr\fP\fB, png_fixed_point \fP\fIint_white_x\fP\fB, png_fixed_point \fP\fIint_white_y\fP\fB, png_fixed_point \fP\fIint_red_x\fP\fB, png_fixed_point \fP\fIint_red_y\fP\fB, png_fixed_point \fP\fIint_green_x\fP\fB, png_fixed_point \fP\fIint_green_y\fP\fB, png_fixed_point \fP\fIint_blue_x\fP\fB, png_fixed_point \fIint_blue_y\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_check_chunk_name (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fIchunk_name\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBpng_size_t png_check_keyword (png_structp \fP\fIpng_ptr\fP\fB, png_charp \fP\fIkey\fP\fB, png_charpp \fInew_key\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_check_IHDR (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fP\fIwidth\fP\fB, png_uint_32 \fP\fIheight\fP\fB, int \fP\fIbit_depth\fP\fB, int \fP\fIcolor_type\fP\fB, int \fP\fIinterlace_type\fP\fB, int \fP\fIcompression_type\fP\fB, int \fIfilter_type\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_combine_row (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIrow\fP\fB, int \fImask\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_correct_palette (png_structp \fP\fIpng_ptr\fP\fB, png_colorp \fP\fIpalette\fP\fB, int \fInum_palette\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBint png_crc_error (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBint png_crc_finish (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fIskip\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_crc_read (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIbuf\fP\fB, png_size_t \fIlength\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBpng_voidp png_create_struct (int \fItype\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBpng_voidp png_create_struct_2 (int \fP\fItype\fP\fB, png_malloc_ptr \fP\fImalloc_fn\fP\fB, png_voidp \fImem_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBint png_debug(int \fP\fIlevel\fP\fB, png_const_charp \fImessage\fP\fB);\fP
+
+\fI\fB
+
+\fBint png_debug1(int \fP\fIlevel\fP\fB, png_const_charp \fP\fImessage\fP\fB, \fIp1\fP\fB);\fP
+
+\fI\fB
+
+\fBint png_debug2(int \fP\fIlevel\fP\fB, png_const_charp \fP\fImessage\fP\fB, \fP\fIp1\fP\fB, \fIp2\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_decompress_chunk (png_structp \fP\fIpng_ptr\fP\fB, int \fP\fIcomp_type\fP\fB, png_size_t \fP\fIchunklength\fP\fB, png_size_t \fP\fIprefix_length\fP\fB, png_size_t \fI*data_length\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_destroy_struct (png_voidp \fIstruct_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_destroy_struct_2 (png_voidp \fP\fIstruct_ptr\fP\fB, png_free_ptr \fP\fIfree_fn\fP\fB, png_voidp \fImem_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_do_background (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_color_16p \fP\fItrans_color\fP\fB, png_color_16p \fP\fIbackground\fP\fB, png_color_16p \fP\fIbackground_1\fP\fB, png_bytep \fP\fIgamma_table\fP\fB, png_bytep \fP\fIgamma_from_1\fP\fB, png_bytep \fP\fIgamma_to_1\fP\fB, png_uint_16pp \fP\fIgamma_16\fP\fB, png_uint_16pp \fP\fIgamma_16_from_1\fP\fB, png_uint_16pp \fP\fIgamma_16_to_1\fP\fB, int \fIgamma_shift\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_do_bgr (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_do_chop (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_do_dither (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_bytep \fP\fIpalette_lookup\fP\fB, png_bytep \fIdither_lookup\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_do_expand (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_color_16p \fItrans_value\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_do_expand_palette (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_colorp \fP\fIpalette\fP\fB, png_bytep \fP\fItrans\fP\fB, int \fInum_trans\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_do_gamma (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_bytep \fP\fIgamma_table\fP\fB, png_uint_16pp \fP\fIgamma_16_table\fP\fB, int \fIgamma_shift\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_do_gray_to_rgb (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_do_invert (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_do_pack (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_uint_32 \fIbit_depth\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_do_packswap (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_do_read_filler (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_uint_32 \fP\fIfiller\fP\fB, png_uint_32 \fIflags\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_do_read_interlace (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, int \fP\fIpass\fP\fB, png_uint_32 \fItransformations\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_do_read_invert_alpha (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_do_read_swap_alpha (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_do_read_transformations (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBint png_do_rgb_to_gray (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_do_shift (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_color_8p \fIbit_depth\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_do_strip_filler (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_uint_32 \fIflags\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_do_swap (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_do_unpack (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_do_unshift (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_color_8p \fIsig_bits\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_do_write_interlace (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, int \fIpass\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_do_write_invert_alpha (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_do_write_swap_alpha (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_do_write_transformations (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid *png_far_to_near (png_structp png_ptr,png_voidp \fP\fIptr\fP\fB, int \fIcheck\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_flush (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_handle_bKGD (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_handle_cHRM (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_handle_gAMA (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_handle_hIST (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_handle_IEND (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_handle_IHDR (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_handle_iCCP (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_handle_iTXt (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_handle_oFFs (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_handle_pCAL (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_handle_pHYs (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_handle_PLTE (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_handle_sBIT (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_handle_sCAL (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_handle_sPLT (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_handle_sRGB (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_handle_tEXt (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_handle_tIME (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_handle_tRNS (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_handle_unknown (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_handle_zTXt (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_info_destroy (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_init_mmx_flags (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_init_read_transformations (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_process_IDAT_data (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIbuffer\fP\fB, png_size_t \fIbuffer_length\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_process_some_data (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_push_check_crc (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_push_crc_finish (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_push_crc_skip (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_push_fill_buffer (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIbuffer\fP\fB, png_size_t \fIlength\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_push_handle_tEXt (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_push_handle_unknown (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_push_handle_zTXt (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_push_have_end (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_push_have_info (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_push_have_row (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fIrow\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_push_process_row (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_push_read_chunk (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_push_read_end (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_push_read_IDAT (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_push_read_sig (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_push_read_tEXt (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_push_read_zTXt (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_push_restore_buffer (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIbuffer\fP\fB, png_size_t \fIbuffer_length\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_push_save_buffer (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_read_data (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIdata\fP\fB, png_size_t \fIlength\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_read_destroy (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_infop \fIend_info_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_read_filter_row (png_structp \fP\fIpng_ptr\fP\fB, png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_bytep \fP\fIprev_row\fP\fB, int \fIfilter\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_read_finish_row (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_read_push_finish_row (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_read_start_row (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_read_transform_info (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_reset_crc (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBint png_set_text_2 (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_textp \fP\fItext_ptr\fP\fB, int \fInum_text\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_write_cHRM (png_structp \fP\fIpng_ptr\fP\fB, double \fP\fIwhite_x\fP\fB, double \fP\fIwhite_y\fP\fB, double \fP\fIred_x\fP\fB, double \fP\fIred_y\fP\fB, double \fP\fIgreen_x\fP\fB, double \fP\fIgreen_y\fP\fB, double \fP\fIblue_x\fP\fB, double \fIblue_y\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_write_cHRM_fixed (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fP\fIwhite_x\fP\fB, png_uint_32 \fP\fIwhite_y\fP\fB, png_uint_32 \fP\fIred_x\fP\fB, png_uint_32 \fP\fIred_y\fP\fB, png_uint_32 \fP\fIgreen_x\fP\fB, png_uint_32 \fP\fIgreen_y\fP\fB, png_uint_32 \fP\fIblue_x\fP\fB, png_uint_32 \fIblue_y\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_write_data (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIdata\fP\fB, png_size_t \fIlength\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_write_destroy (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBvoid png_write_filtered_row (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fIfiltered_row\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_write_find_filter (png_structp \fP\fIpng_ptr\fP\fB, png_row_infop \fIrow_info\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_write_finish_row (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_write_gAMA (png_structp \fP\fIpng_ptr\fP\fB, double \fIfile_gamma\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_write_gAMA_fixed (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fIint_file_gamma\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_write_hIST (png_structp \fP\fIpng_ptr\fP\fB, png_uint_16p \fP\fIhist\fP\fB, int \fInum_hist\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_write_iCCP (png_structp \fP\fIpng_ptr\fP\fB, png_charp \fP\fIname\fP\fB, int \fP\fIcompression_type\fP\fB, png_charp \fP\fIprofile\fP\fB, int \fIproflen\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_write_IDAT (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIdata\fP\fB, png_size_t \fIlength\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_write_IEND (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_write_IHDR (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fP\fIwidth\fP\fB, png_uint_32 \fP\fIheight\fP\fB, int \fP\fIbit_depth\fP\fB, int \fP\fIcolor_type\fP\fB, int \fP\fIcompression_type\fP\fB, int \fP\fIfilter_type\fP\fB, int \fIinterlace_type\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_write_iTXt (png_structp \fP\fIpng_ptr\fP\fB, int \fP\fIcompression\fP\fB, png_charp \fP\fIkey\fP\fB, png_charp \fP\fIlang\fP\fB, png_charp \fP\fItranslated_key\fP\fB, png_charp \fItext\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_write_oFFs (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fP\fIx_offset\fP\fB, png_uint_32 \fP\fIy_offset\fP\fB, int \fIunit_type\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_write_pCAL (png_structp \fP\fIpng_ptr\fP\fB, png_charp \fP\fIpurpose\fP\fB, png_int_32 \fP\fIX0\fP\fB, png_int_32 \fP\fIX1\fP\fB, int \fP\fItype\fP\fB, int \fP\fInparams\fP\fB, png_charp \fP\fIunits\fP\fB, png_charpp \fIparams\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_write_pHYs (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fP\fIx_pixels_per_unit\fP\fB, png_uint_32 \fP\fIy_pixels_per_unit\fP\fB, int \fIunit_type\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_write_PLTE (png_structp \fP\fIpng_ptr\fP\fB, png_colorp \fP\fIpalette\fP\fB, png_uint_32 \fInum_pal\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_write_sBIT (png_structp \fP\fIpng_ptr\fP\fB, png_color_8p \fP\fIsbit\fP\fB, int \fIcolor_type\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_write_sCAL (png_structp \fP\fIpng_ptr\fP\fB, png_charp \fP\fIunit\fP\fB, double \fP\fIwidth\fP\fB, double \fIheight\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_write_sCAL_s (png_structp \fP\fIpng_ptr\fP\fB, png_charp \fP\fIunit\fP\fB, png_charp \fP\fIwidth\fP\fB, png_charp \fIheight\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_write_sRGB (png_structp \fP\fIpng_ptr\fP\fB, int \fIintent\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_write_sPLT (png_structp \fP\fIpng_ptr\fP\fB, png_spalette_p \fIpalette\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_write_start_row (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_write_tEXt (png_structp \fP\fIpng_ptr\fP\fB, png_charp \fP\fIkey\fP\fB, png_charp \fP\fItext\fP\fB, png_size_t \fItext_len\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_write_tIME (png_structp \fP\fIpng_ptr\fP\fB, png_timep \fImod_time\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_write_tRNS (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fItrans\fP\fB, png_color_16p \fP\fIvalues\fP\fB, int \fP\fInumber\fP\fB, int \fIcolor_type\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_write_zTXt (png_structp \fP\fIpng_ptr\fP\fB, png_charp \fP\fIkey\fP\fB, png_charp \fP\fItext\fP\fB, png_size_t \fP\fItext_len\fP\fB, int \fIcompression\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoidpf png_zalloc (voidpf \fP\fIpng_ptr\fP\fB, uInt \fP\fIitems\fP\fB, uInt \fIsize\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+\fBvoid png_zfree (voidpf \fP\fIpng_ptr\fP\fB, voidpf \fIptr\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
+.SH DESCRIPTION
+The functions listed above are used privately by libpng
+and are not recommended for use by applications. They are
+not "exported" to applications using shared libraries. They
+are listed alphabetically here as an aid to libpng maintainers.
+See png.h for more information on these functions.
+
+.SH SEE ALSO
+libpng(3), png(5)
+.SH AUTHOR
+Glenn Randers-Pehrson
diff --git a/src/3rdparty/libpng/ltmain.sh b/src/3rdparty/libpng/ltmain.sh
new file mode 100755
index 0000000..a72f2fd
--- /dev/null
+++ b/src/3rdparty/libpng/ltmain.sh
@@ -0,0 +1,8406 @@
+# Generated from ltmain.m4sh.
+
+# ltmain.sh (GNU libtool) 2.2.6b
+# Written by Gordon Matzigkeit <gord@gnu.ai.mit.edu>, 1996
+
+# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005, 2006, 2007 2008 Free Software Foundation, Inc.
+# This is free software; see the source for copying conditions. There is NO
+# warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+
+# GNU Libtool is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# As a special exception to the GNU General Public License,
+# if you distribute this file as part of a program or library that
+# is built using GNU Libtool, you may include this file under the
+# same distribution terms that you use for the rest of that program.
+#
+# GNU Libtool is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GNU Libtool; see the file COPYING. If not, a copy
+# can be downloaded from http://www.gnu.org/licenses/gpl.html,
+# or obtained by writing to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+
+# Usage: $progname [OPTION]... [MODE-ARG]...
+#
+# Provide generalized library-building support services.
+#
+# --config show all configuration variables
+# --debug enable verbose shell tracing
+# -n, --dry-run display commands without modifying any files
+# --features display basic configuration information and exit
+# --mode=MODE use operation mode MODE
+# --preserve-dup-deps don't remove duplicate dependency libraries
+# --quiet, --silent don't print informational messages
+# --tag=TAG use configuration variables from tag TAG
+# -v, --verbose print informational messages (default)
+# --version print version information
+# -h, --help print short or long help message
+#
+# MODE must be one of the following:
+#
+# clean remove files from the build directory
+# compile compile a source file into a libtool object
+# execute automatically set library path, then run a program
+# finish complete the installation of libtool libraries
+# install install libraries or executables
+# link create a library or an executable
+# uninstall remove libraries from an installed directory
+#
+# MODE-ARGS vary depending on the MODE.
+# Try `$progname --help --mode=MODE' for a more detailed description of MODE.
+#
+# When reporting a bug, please describe a test case to reproduce it and
+# include the following information:
+#
+# host-triplet: $host
+# shell: $SHELL
+# compiler: $LTCC
+# compiler flags: $LTCFLAGS
+# linker: $LD (gnu? $with_gnu_ld)
+# $progname: (GNU libtool) 2.2.6b
+# automake: $automake_version
+# autoconf: $autoconf_version
+#
+# Report bugs to <bug-libtool@gnu.org>.
+
+PROGRAM=ltmain.sh
+PACKAGE=libtool
+VERSION=2.2.6b
+TIMESTAMP=""
+package_revision=1.3017
+
+# Be Bourne compatible
+if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then
+ emulate sh
+ NULLCMD=:
+ # Zsh 3.x and 4.x performs word splitting on ${1+"$@"}, which
+ # is contrary to our usage. Disable this feature.
+ alias -g '${1+"$@"}'='"$@"'
+ setopt NO_GLOB_SUBST
+else
+ case `(set -o) 2>/dev/null` in *posix*) set -o posix;; esac
+fi
+BIN_SH=xpg4; export BIN_SH # for Tru64
+DUALCASE=1; export DUALCASE # for MKS sh
+
+# NLS nuisances: We save the old values to restore during execute mode.
+# Only set LANG and LC_ALL to C if already set.
+# These must not be set unconditionally because not all systems understand
+# e.g. LANG=C (notably SCO).
+lt_user_locale=
+lt_safe_locale=
+for lt_var in LANG LANGUAGE LC_ALL LC_CTYPE LC_COLLATE LC_MESSAGES
+do
+ eval "if test \"\${$lt_var+set}\" = set; then
+ save_$lt_var=\$$lt_var
+ $lt_var=C
+ export $lt_var
+ lt_user_locale=\"$lt_var=\\\$save_\$lt_var; \$lt_user_locale\"
+ lt_safe_locale=\"$lt_var=C; \$lt_safe_locale\"
+ fi"
+done
+
+$lt_unset CDPATH
+
+
+
+
+
+: ${CP="cp -f"}
+: ${ECHO="echo"}
+: ${EGREP="/bin/grep -E"}
+: ${FGREP="/bin/grep -F"}
+: ${GREP="/bin/grep"}
+: ${LN_S="ln -s"}
+: ${MAKE="make"}
+: ${MKDIR="mkdir"}
+: ${MV="mv -f"}
+: ${RM="rm -f"}
+: ${SED="/bin/sed"}
+: ${SHELL="${CONFIG_SHELL-/bin/sh}"}
+: ${Xsed="$SED -e 1s/^X//"}
+
+# Global variables:
+EXIT_SUCCESS=0
+EXIT_FAILURE=1
+EXIT_MISMATCH=63 # $? = 63 is used to indicate version mismatch to missing.
+EXIT_SKIP=77 # $? = 77 is used to indicate a skipped test to automake.
+
+exit_status=$EXIT_SUCCESS
+
+# Make sure IFS has a sensible default
+lt_nl='
+'
+IFS=" $lt_nl"
+
+dirname="s,/[^/]*$,,"
+basename="s,^.*/,,"
+
+# func_dirname_and_basename file append nondir_replacement
+# perform func_basename and func_dirname in a single function
+# call:
+# dirname: Compute the dirname of FILE. If nonempty,
+# add APPEND to the result, otherwise set result
+# to NONDIR_REPLACEMENT.
+# value returned in "$func_dirname_result"
+# basename: Compute filename of FILE.
+# value retuned in "$func_basename_result"
+# Implementation must be kept synchronized with func_dirname
+# and func_basename. For efficiency, we do not delegate to
+# those functions but instead duplicate the functionality here.
+func_dirname_and_basename ()
+{
+ # Extract subdirectory from the argument.
+ func_dirname_result=`$ECHO "X${1}" | $Xsed -e "$dirname"`
+ if test "X$func_dirname_result" = "X${1}"; then
+ func_dirname_result="${3}"
+ else
+ func_dirname_result="$func_dirname_result${2}"
+ fi
+ func_basename_result=`$ECHO "X${1}" | $Xsed -e "$basename"`
+}
+
+# Generated shell functions inserted here.
+
+# Work around backward compatibility issue on IRIX 6.5. On IRIX 6.4+, sh
+# is ksh but when the shell is invoked as "sh" and the current value of
+# the _XPG environment variable is not equal to 1 (one), the special
+# positional parameter $0, within a function call, is the name of the
+# function.
+progpath="$0"
+
+# The name of this program:
+# In the unlikely event $progname began with a '-', it would play havoc with
+# func_echo (imagine progname=-n), so we prepend ./ in that case:
+func_dirname_and_basename "$progpath"
+progname=$func_basename_result
+case $progname in
+ -*) progname=./$progname ;;
+esac
+
+# Make sure we have an absolute path for reexecution:
+case $progpath in
+ [\\/]*|[A-Za-z]:\\*) ;;
+ *[\\/]*)
+ progdir=$func_dirname_result
+ progdir=`cd "$progdir" && pwd`
+ progpath="$progdir/$progname"
+ ;;
+ *)
+ save_IFS="$IFS"
+ IFS=:
+ for progdir in $PATH; do
+ IFS="$save_IFS"
+ test -x "$progdir/$progname" && break
+ done
+ IFS="$save_IFS"
+ test -n "$progdir" || progdir=`pwd`
+ progpath="$progdir/$progname"
+ ;;
+esac
+
+# Sed substitution that helps us do robust quoting. It backslashifies
+# metacharacters that are still active within double-quoted strings.
+Xsed="${SED}"' -e 1s/^X//'
+sed_quote_subst='s/\([`"$\\]\)/\\\1/g'
+
+# Same as above, but do not quote variable references.
+double_quote_subst='s/\(["`\\]\)/\\\1/g'
+
+# Re-`\' parameter expansions in output of double_quote_subst that were
+# `\'-ed in input to the same. If an odd number of `\' preceded a '$'
+# in input to double_quote_subst, that '$' was protected from expansion.
+# Since each input `\' is now two `\'s, look for any number of runs of
+# four `\'s followed by two `\'s and then a '$'. `\' that '$'.
+bs='\\'
+bs2='\\\\'
+bs4='\\\\\\\\'
+dollar='\$'
+sed_double_backslash="\
+ s/$bs4/&\\
+/g
+ s/^$bs2$dollar/$bs&/
+ s/\\([^$bs]\\)$bs2$dollar/\\1$bs2$bs$dollar/g
+ s/\n//g"
+
+# Standard options:
+opt_dry_run=false
+opt_help=false
+opt_quiet=false
+opt_verbose=false
+opt_warning=:
+
+# func_echo arg...
+# Echo program name prefixed message, along with the current mode
+# name if it has been set yet.
+func_echo ()
+{
+ $ECHO "$progname${mode+: }$mode: $*"
+}
+
+# func_verbose arg...
+# Echo program name prefixed message in verbose mode only.
+func_verbose ()
+{
+ $opt_verbose && func_echo ${1+"$@"}
+
+ # A bug in bash halts the script if the last line of a function
+ # fails when set -e is in force, so we need another command to
+ # work around that:
+ :
+}
+
+# func_error arg...
+# Echo program name prefixed message to standard error.
+func_error ()
+{
+ $ECHO "$progname${mode+: }$mode: "${1+"$@"} 1>&2
+}
+
+# func_warning arg...
+# Echo program name prefixed warning message to standard error.
+func_warning ()
+{
+ $opt_warning && $ECHO "$progname${mode+: }$mode: warning: "${1+"$@"} 1>&2
+
+ # bash bug again:
+ :
+}
+
+# func_fatal_error arg...
+# Echo program name prefixed message to standard error, and exit.
+func_fatal_error ()
+{
+ func_error ${1+"$@"}
+ exit $EXIT_FAILURE
+}
+
+# func_fatal_help arg...
+# Echo program name prefixed message to standard error, followed by
+# a help hint, and exit.
+func_fatal_help ()
+{
+ func_error ${1+"$@"}
+ func_fatal_error "$help"
+}
+help="Try \`$progname --help' for more information." ## default
+
+
+# func_grep expression filename
+# Check whether EXPRESSION matches any line of FILENAME, without output.
+func_grep ()
+{
+ $GREP "$1" "$2" >/dev/null 2>&1
+}
+
+
+# func_mkdir_p directory-path
+# Make sure the entire path to DIRECTORY-PATH is available.
+func_mkdir_p ()
+{
+ my_directory_path="$1"
+ my_dir_list=
+
+ if test -n "$my_directory_path" && test "$opt_dry_run" != ":"; then
+
+ # Protect directory names starting with `-'
+ case $my_directory_path in
+ -*) my_directory_path="./$my_directory_path" ;;
+ esac
+
+ # While some portion of DIR does not yet exist...
+ while test ! -d "$my_directory_path"; do
+ # ...make a list in topmost first order. Use a colon delimited
+ # list incase some portion of path contains whitespace.
+ my_dir_list="$my_directory_path:$my_dir_list"
+
+ # If the last portion added has no slash in it, the list is done
+ case $my_directory_path in */*) ;; *) break ;; esac
+
+ # ...otherwise throw away the child directory and loop
+ my_directory_path=`$ECHO "X$my_directory_path" | $Xsed -e "$dirname"`
+ done
+ my_dir_list=`$ECHO "X$my_dir_list" | $Xsed -e 's,:*$,,'`
+
+ save_mkdir_p_IFS="$IFS"; IFS=':'
+ for my_dir in $my_dir_list; do
+ IFS="$save_mkdir_p_IFS"
+ # mkdir can fail with a `File exist' error if two processes
+ # try to create one of the directories concurrently. Don't
+ # stop in that case!
+ $MKDIR "$my_dir" 2>/dev/null || :
+ done
+ IFS="$save_mkdir_p_IFS"
+
+ # Bail out if we (or some other process) failed to create a directory.
+ test -d "$my_directory_path" || \
+ func_fatal_error "Failed to create \`$1'"
+ fi
+}
+
+
+# func_mktempdir [string]
+# Make a temporary directory that won't clash with other running
+# libtool processes, and avoids race conditions if possible. If
+# given, STRING is the basename for that directory.
+func_mktempdir ()
+{
+ my_template="${TMPDIR-/tmp}/${1-$progname}"
+
+ if test "$opt_dry_run" = ":"; then
+ # Return a directory name, but don't create it in dry-run mode
+ my_tmpdir="${my_template}-$$"
+ else
+
+ # If mktemp works, use that first and foremost
+ my_tmpdir=`mktemp -d "${my_template}-XXXXXXXX" 2>/dev/null`
+
+ if test ! -d "$my_tmpdir"; then
+ # Failing that, at least try and use $RANDOM to avoid a race
+ my_tmpdir="${my_template}-${RANDOM-0}$$"
+
+ save_mktempdir_umask=`umask`
+ umask 0077
+ $MKDIR "$my_tmpdir"
+ umask $save_mktempdir_umask
+ fi
+
+ # If we're not in dry-run mode, bomb out on failure
+ test -d "$my_tmpdir" || \
+ func_fatal_error "cannot create temporary directory \`$my_tmpdir'"
+ fi
+
+ $ECHO "X$my_tmpdir" | $Xsed
+}
+
+
+# func_quote_for_eval arg
+# Aesthetically quote ARG to be evaled later.
+# This function returns two values: FUNC_QUOTE_FOR_EVAL_RESULT
+# is double-quoted, suitable for a subsequent eval, whereas
+# FUNC_QUOTE_FOR_EVAL_UNQUOTED_RESULT has merely all characters
+# which are still active within double quotes backslashified.
+func_quote_for_eval ()
+{
+ case $1 in
+ *[\\\`\"\$]*)
+ func_quote_for_eval_unquoted_result=`$ECHO "X$1" | $Xsed -e "$sed_quote_subst"` ;;
+ *)
+ func_quote_for_eval_unquoted_result="$1" ;;
+ esac
+
+ case $func_quote_for_eval_unquoted_result in
+ # Double-quote args containing shell metacharacters to delay
+ # word splitting, command substitution and and variable
+ # expansion for a subsequent eval.
+ # Many Bourne shells cannot handle close brackets correctly
+ # in scan sets, so we specify it separately.
+ *[\[\~\#\^\&\*\(\)\{\}\|\;\<\>\?\'\ \ ]*|*]*|"")
+ func_quote_for_eval_result="\"$func_quote_for_eval_unquoted_result\""
+ ;;
+ *)
+ func_quote_for_eval_result="$func_quote_for_eval_unquoted_result"
+ esac
+}
+
+
+# func_quote_for_expand arg
+# Aesthetically quote ARG to be evaled later; same as above,
+# but do not quote variable references.
+func_quote_for_expand ()
+{
+ case $1 in
+ *[\\\`\"]*)
+ my_arg=`$ECHO "X$1" | $Xsed \
+ -e "$double_quote_subst" -e "$sed_double_backslash"` ;;
+ *)
+ my_arg="$1" ;;
+ esac
+
+ case $my_arg in
+ # Double-quote args containing shell metacharacters to delay
+ # word splitting and command substitution for a subsequent eval.
+ # Many Bourne shells cannot handle close brackets correctly
+ # in scan sets, so we specify it separately.
+ *[\[\~\#\^\&\*\(\)\{\}\|\;\<\>\?\'\ \ ]*|*]*|"")
+ my_arg="\"$my_arg\""
+ ;;
+ esac
+
+ func_quote_for_expand_result="$my_arg"
+}
+
+
+# func_show_eval cmd [fail_exp]
+# Unless opt_silent is true, then output CMD. Then, if opt_dryrun is
+# not true, evaluate CMD. If the evaluation of CMD fails, and FAIL_EXP
+# is given, then evaluate it.
+func_show_eval ()
+{
+ my_cmd="$1"
+ my_fail_exp="${2-:}"
+
+ ${opt_silent-false} || {
+ func_quote_for_expand "$my_cmd"
+ eval "func_echo $func_quote_for_expand_result"
+ }
+
+ if ${opt_dry_run-false}; then :; else
+ eval "$my_cmd"
+ my_status=$?
+ if test "$my_status" -eq 0; then :; else
+ eval "(exit $my_status); $my_fail_exp"
+ fi
+ fi
+}
+
+
+# func_show_eval_locale cmd [fail_exp]
+# Unless opt_silent is true, then output CMD. Then, if opt_dryrun is
+# not true, evaluate CMD. If the evaluation of CMD fails, and FAIL_EXP
+# is given, then evaluate it. Use the saved locale for evaluation.
+func_show_eval_locale ()
+{
+ my_cmd="$1"
+ my_fail_exp="${2-:}"
+
+ ${opt_silent-false} || {
+ func_quote_for_expand "$my_cmd"
+ eval "func_echo $func_quote_for_expand_result"
+ }
+
+ if ${opt_dry_run-false}; then :; else
+ eval "$lt_user_locale
+ $my_cmd"
+ my_status=$?
+ eval "$lt_safe_locale"
+ if test "$my_status" -eq 0; then :; else
+ eval "(exit $my_status); $my_fail_exp"
+ fi
+ fi
+}
+
+
+
+
+
+# func_version
+# Echo version message to standard output and exit.
+func_version ()
+{
+ $SED -n '/^# '$PROGRAM' (GNU /,/# warranty; / {
+ s/^# //
+ s/^# *$//
+ s/\((C)\)[ 0-9,-]*\( [1-9][0-9]*\)/\1\2/
+ p
+ }' < "$progpath"
+ exit $?
+}
+
+# func_usage
+# Echo short help message to standard output and exit.
+func_usage ()
+{
+ $SED -n '/^# Usage:/,/# -h/ {
+ s/^# //
+ s/^# *$//
+ s/\$progname/'$progname'/
+ p
+ }' < "$progpath"
+ $ECHO
+ $ECHO "run \`$progname --help | more' for full usage"
+ exit $?
+}
+
+# func_help
+# Echo long help message to standard output and exit.
+func_help ()
+{
+ $SED -n '/^# Usage:/,/# Report bugs to/ {
+ s/^# //
+ s/^# *$//
+ s*\$progname*'$progname'*
+ s*\$host*'"$host"'*
+ s*\$SHELL*'"$SHELL"'*
+ s*\$LTCC*'"$LTCC"'*
+ s*\$LTCFLAGS*'"$LTCFLAGS"'*
+ s*\$LD*'"$LD"'*
+ s/\$with_gnu_ld/'"$with_gnu_ld"'/
+ s/\$automake_version/'"`(automake --version) 2>/dev/null |$SED 1q`"'/
+ s/\$autoconf_version/'"`(autoconf --version) 2>/dev/null |$SED 1q`"'/
+ p
+ }' < "$progpath"
+ exit $?
+}
+
+# func_missing_arg argname
+# Echo program name prefixed message to standard error and set global
+# exit_cmd.
+func_missing_arg ()
+{
+ func_error "missing argument for $1"
+ exit_cmd=exit
+}
+
+exit_cmd=:
+
+
+
+
+
+# Check that we have a working $ECHO.
+if test "X$1" = X--no-reexec; then
+ # Discard the --no-reexec flag, and continue.
+ shift
+elif test "X$1" = X--fallback-echo; then
+ # Avoid inline document here, it may be left over
+ :
+elif test "X`{ $ECHO '\t'; } 2>/dev/null`" = 'X\t'; then
+ # Yippee, $ECHO works!
+ :
+else
+ # Restart under the correct shell, and then maybe $ECHO will work.
+ exec $SHELL "$progpath" --no-reexec ${1+"$@"}
+fi
+
+if test "X$1" = X--fallback-echo; then
+ # used as fallback echo
+ shift
+ cat <<EOF
+$*
+EOF
+ exit $EXIT_SUCCESS
+fi
+
+magic="%%%MAGIC variable%%%"
+magic_exe="%%%MAGIC EXE variable%%%"
+
+# Global variables.
+# $mode is unset
+nonopt=
+execute_dlfiles=
+preserve_args=
+lo2o="s/\\.lo\$/.${objext}/"
+o2lo="s/\\.${objext}\$/.lo/"
+extracted_archives=
+extracted_serial=0
+
+opt_dry_run=false
+opt_duplicate_deps=false
+opt_silent=false
+opt_debug=:
+
+# If this variable is set in any of the actions, the command in it
+# will be execed at the end. This prevents here-documents from being
+# left over by shells.
+exec_cmd=
+
+# func_fatal_configuration arg...
+# Echo program name prefixed message to standard error, followed by
+# a configuration failure hint, and exit.
+func_fatal_configuration ()
+{
+ func_error ${1+"$@"}
+ func_error "See the $PACKAGE documentation for more information."
+ func_fatal_error "Fatal configuration error."
+}
+
+
+# func_config
+# Display the configuration for all the tags in this script.
+func_config ()
+{
+ re_begincf='^# ### BEGIN LIBTOOL'
+ re_endcf='^# ### END LIBTOOL'
+
+ # Default configuration.
+ $SED "1,/$re_begincf CONFIG/d;/$re_endcf CONFIG/,\$d" < "$progpath"
+
+ # Now print the configurations for the tags.
+ for tagname in $taglist; do
+ $SED -n "/$re_begincf TAG CONFIG: $tagname\$/,/$re_endcf TAG CONFIG: $tagname\$/p" < "$progpath"
+ done
+
+ exit $?
+}
+
+# func_features
+# Display the features supported by this script.
+func_features ()
+{
+ $ECHO "host: $host"
+ if test "$build_libtool_libs" = yes; then
+ $ECHO "enable shared libraries"
+ else
+ $ECHO "disable shared libraries"
+ fi
+ if test "$build_old_libs" = yes; then
+ $ECHO "enable static libraries"
+ else
+ $ECHO "disable static libraries"
+ fi
+
+ exit $?
+}
+
+# func_enable_tag tagname
+# Verify that TAGNAME is valid, and either flag an error and exit, or
+# enable the TAGNAME tag. We also add TAGNAME to the global $taglist
+# variable here.
+func_enable_tag ()
+{
+ # Global variable:
+ tagname="$1"
+
+ re_begincf="^# ### BEGIN LIBTOOL TAG CONFIG: $tagname\$"
+ re_endcf="^# ### END LIBTOOL TAG CONFIG: $tagname\$"
+ sed_extractcf="/$re_begincf/,/$re_endcf/p"
+
+ # Validate tagname.
+ case $tagname in
+ *[!-_A-Za-z0-9,/]*)
+ func_fatal_error "invalid tag name: $tagname"
+ ;;
+ esac
+
+ # Don't test for the "default" C tag, as we know it's
+ # there but not specially marked.
+ case $tagname in
+ CC) ;;
+ *)
+ if $GREP "$re_begincf" "$progpath" >/dev/null 2>&1; then
+ taglist="$taglist $tagname"
+
+ # Evaluate the configuration. Be careful to quote the path
+ # and the sed script, to avoid splitting on whitespace, but
+ # also don't use non-portable quotes within backquotes within
+ # quotes we have to do it in 2 steps:
+ extractedcf=`$SED -n -e "$sed_extractcf" < "$progpath"`
+ eval "$extractedcf"
+ else
+ func_error "ignoring unknown tag $tagname"
+ fi
+ ;;
+ esac
+}
+
+# Parse options once, thoroughly. This comes as soon as possible in
+# the script to make things like `libtool --version' happen quickly.
+{
+
+ # Shorthand for --mode=foo, only valid as the first argument
+ case $1 in
+ clean|clea|cle|cl)
+ shift; set dummy --mode clean ${1+"$@"}; shift
+ ;;
+ compile|compil|compi|comp|com|co|c)
+ shift; set dummy --mode compile ${1+"$@"}; shift
+ ;;
+ execute|execut|execu|exec|exe|ex|e)
+ shift; set dummy --mode execute ${1+"$@"}; shift
+ ;;
+ finish|finis|fini|fin|fi|f)
+ shift; set dummy --mode finish ${1+"$@"}; shift
+ ;;
+ install|instal|insta|inst|ins|in|i)
+ shift; set dummy --mode install ${1+"$@"}; shift
+ ;;
+ link|lin|li|l)
+ shift; set dummy --mode link ${1+"$@"}; shift
+ ;;
+ uninstall|uninstal|uninsta|uninst|unins|unin|uni|un|u)
+ shift; set dummy --mode uninstall ${1+"$@"}; shift
+ ;;
+ esac
+
+ # Parse non-mode specific arguments:
+ while test "$#" -gt 0; do
+ opt="$1"
+ shift
+
+ case $opt in
+ --config) func_config ;;
+
+ --debug) preserve_args="$preserve_args $opt"
+ func_echo "enabling shell trace mode"
+ opt_debug='set -x'
+ $opt_debug
+ ;;
+
+ -dlopen) test "$#" -eq 0 && func_missing_arg "$opt" && break
+ execute_dlfiles="$execute_dlfiles $1"
+ shift
+ ;;
+
+ --dry-run | -n) opt_dry_run=: ;;
+ --features) func_features ;;
+ --finish) mode="finish" ;;
+
+ --mode) test "$#" -eq 0 && func_missing_arg "$opt" && break
+ case $1 in
+ # Valid mode arguments:
+ clean) ;;
+ compile) ;;
+ execute) ;;
+ finish) ;;
+ install) ;;
+ link) ;;
+ relink) ;;
+ uninstall) ;;
+
+ # Catch anything else as an error
+ *) func_error "invalid argument for $opt"
+ exit_cmd=exit
+ break
+ ;;
+ esac
+
+ mode="$1"
+ shift
+ ;;
+
+ --preserve-dup-deps)
+ opt_duplicate_deps=: ;;
+
+ --quiet|--silent) preserve_args="$preserve_args $opt"
+ opt_silent=:
+ ;;
+
+ --verbose| -v) preserve_args="$preserve_args $opt"
+ opt_silent=false
+ ;;
+
+ --tag) test "$#" -eq 0 && func_missing_arg "$opt" && break
+ preserve_args="$preserve_args $opt $1"
+ func_enable_tag "$1" # tagname is set here
+ shift
+ ;;
+
+ # Separate optargs to long options:
+ -dlopen=*|--mode=*|--tag=*)
+ func_opt_split "$opt"
+ set dummy "$func_opt_split_opt" "$func_opt_split_arg" ${1+"$@"}
+ shift
+ ;;
+
+ -\?|-h) func_usage ;;
+ --help) opt_help=: ;;
+ --version) func_version ;;
+
+ -*) func_fatal_help "unrecognized option \`$opt'" ;;
+
+ *) nonopt="$opt"
+ break
+ ;;
+ esac
+ done
+
+
+ case $host in
+ *cygwin* | *mingw* | *pw32* | *cegcc*)
+ # don't eliminate duplications in $postdeps and $predeps
+ opt_duplicate_compiler_generated_deps=:
+ ;;
+ *)
+ opt_duplicate_compiler_generated_deps=$opt_duplicate_deps
+ ;;
+ esac
+
+ # Having warned about all mis-specified options, bail out if
+ # anything was wrong.
+ $exit_cmd $EXIT_FAILURE
+}
+
+# func_check_version_match
+# Ensure that we are using m4 macros, and libtool script from the same
+# release of libtool.
+func_check_version_match ()
+{
+ if test "$package_revision" != "$macro_revision"; then
+ if test "$VERSION" != "$macro_version"; then
+ if test -z "$macro_version"; then
+ cat >&2 <<_LT_EOF
+$progname: Version mismatch error. This is $PACKAGE $VERSION, but the
+$progname: definition of this LT_INIT comes from an older release.
+$progname: You should recreate aclocal.m4 with macros from $PACKAGE $VERSION
+$progname: and run autoconf again.
+_LT_EOF
+ else
+ cat >&2 <<_LT_EOF
+$progname: Version mismatch error. This is $PACKAGE $VERSION, but the
+$progname: definition of this LT_INIT comes from $PACKAGE $macro_version.
+$progname: You should recreate aclocal.m4 with macros from $PACKAGE $VERSION
+$progname: and run autoconf again.
+_LT_EOF
+ fi
+ else
+ cat >&2 <<_LT_EOF
+$progname: Version mismatch error. This is $PACKAGE $VERSION, revision $package_revision,
+$progname: but the definition of this LT_INIT comes from revision $macro_revision.
+$progname: You should recreate aclocal.m4 with macros from revision $package_revision
+$progname: of $PACKAGE $VERSION and run autoconf again.
+_LT_EOF
+ fi
+
+ exit $EXIT_MISMATCH
+ fi
+}
+
+
+## ----------- ##
+## Main. ##
+## ----------- ##
+
+$opt_help || {
+ # Sanity checks first:
+ func_check_version_match
+
+ if test "$build_libtool_libs" != yes && test "$build_old_libs" != yes; then
+ func_fatal_configuration "not configured to build any kind of library"
+ fi
+
+ test -z "$mode" && func_fatal_error "error: you must specify a MODE."
+
+
+ # Darwin sucks
+ eval std_shrext=\"$shrext_cmds\"
+
+
+ # Only execute mode is allowed to have -dlopen flags.
+ if test -n "$execute_dlfiles" && test "$mode" != execute; then
+ func_error "unrecognized option \`-dlopen'"
+ $ECHO "$help" 1>&2
+ exit $EXIT_FAILURE
+ fi
+
+ # Change the help message to a mode-specific one.
+ generic_help="$help"
+ help="Try \`$progname --help --mode=$mode' for more information."
+}
+
+
+# func_lalib_p file
+# True iff FILE is a libtool `.la' library or `.lo' object file.
+# This function is only a basic sanity check; it will hardly flush out
+# determined imposters.
+func_lalib_p ()
+{
+ test -f "$1" &&
+ $SED -e 4q "$1" 2>/dev/null \
+ | $GREP "^# Generated by .*$PACKAGE" > /dev/null 2>&1
+}
+
+# func_lalib_unsafe_p file
+# True iff FILE is a libtool `.la' library or `.lo' object file.
+# This function implements the same check as func_lalib_p without
+# resorting to external programs. To this end, it redirects stdin and
+# closes it afterwards, without saving the original file descriptor.
+# As a safety measure, use it only where a negative result would be
+# fatal anyway. Works if `file' does not exist.
+func_lalib_unsafe_p ()
+{
+ lalib_p=no
+ if test -f "$1" && test -r "$1" && exec 5<&0 <"$1"; then
+ for lalib_p_l in 1 2 3 4
+ do
+ read lalib_p_line
+ case "$lalib_p_line" in
+ \#\ Generated\ by\ *$PACKAGE* ) lalib_p=yes; break;;
+ esac
+ done
+ exec 0<&5 5<&-
+ fi
+ test "$lalib_p" = yes
+}
+
+# func_ltwrapper_script_p file
+# True iff FILE is a libtool wrapper script
+# This function is only a basic sanity check; it will hardly flush out
+# determined imposters.
+func_ltwrapper_script_p ()
+{
+ func_lalib_p "$1"
+}
+
+# func_ltwrapper_executable_p file
+# True iff FILE is a libtool wrapper executable
+# This function is only a basic sanity check; it will hardly flush out
+# determined imposters.
+func_ltwrapper_executable_p ()
+{
+ func_ltwrapper_exec_suffix=
+ case $1 in
+ *.exe) ;;
+ *) func_ltwrapper_exec_suffix=.exe ;;
+ esac
+ $GREP "$magic_exe" "$1$func_ltwrapper_exec_suffix" >/dev/null 2>&1
+}
+
+# func_ltwrapper_scriptname file
+# Assumes file is an ltwrapper_executable
+# uses $file to determine the appropriate filename for a
+# temporary ltwrapper_script.
+func_ltwrapper_scriptname ()
+{
+ func_ltwrapper_scriptname_result=""
+ if func_ltwrapper_executable_p "$1"; then
+ func_dirname_and_basename "$1" "" "."
+ func_stripname '' '.exe' "$func_basename_result"
+ func_ltwrapper_scriptname_result="$func_dirname_result/$objdir/${func_stripname_result}_ltshwrapper"
+ fi
+}
+
+# func_ltwrapper_p file
+# True iff FILE is a libtool wrapper script or wrapper executable
+# This function is only a basic sanity check; it will hardly flush out
+# determined imposters.
+func_ltwrapper_p ()
+{
+ func_ltwrapper_script_p "$1" || func_ltwrapper_executable_p "$1"
+}
+
+
+# func_execute_cmds commands fail_cmd
+# Execute tilde-delimited COMMANDS.
+# If FAIL_CMD is given, eval that upon failure.
+# FAIL_CMD may read-access the current command in variable CMD!
+func_execute_cmds ()
+{
+ $opt_debug
+ save_ifs=$IFS; IFS='~'
+ for cmd in $1; do
+ IFS=$save_ifs
+ eval cmd=\"$cmd\"
+ func_show_eval "$cmd" "${2-:}"
+ done
+ IFS=$save_ifs
+}
+
+
+# func_source file
+# Source FILE, adding directory component if necessary.
+# Note that it is not necessary on cygwin/mingw to append a dot to
+# FILE even if both FILE and FILE.exe exist: automatic-append-.exe
+# behavior happens only for exec(3), not for open(2)! Also, sourcing
+# `FILE.' does not work on cygwin managed mounts.
+func_source ()
+{
+ $opt_debug
+ case $1 in
+ */* | *\\*) . "$1" ;;
+ *) . "./$1" ;;
+ esac
+}
+
+
+# func_infer_tag arg
+# Infer tagged configuration to use if any are available and
+# if one wasn't chosen via the "--tag" command line option.
+# Only attempt this if the compiler in the base compile
+# command doesn't match the default compiler.
+# arg is usually of the form 'gcc ...'
+func_infer_tag ()
+{
+ $opt_debug
+ if test -n "$available_tags" && test -z "$tagname"; then
+ CC_quoted=
+ for arg in $CC; do
+ func_quote_for_eval "$arg"
+ CC_quoted="$CC_quoted $func_quote_for_eval_result"
+ done
+ case $@ in
+ # Blanks in the command may have been stripped by the calling shell,
+ # but not from the CC environment variable when configure was run.
+ " $CC "* | "$CC "* | " `$ECHO $CC` "* | "`$ECHO $CC` "* | " $CC_quoted"* | "$CC_quoted "* | " `$ECHO $CC_quoted` "* | "`$ECHO $CC_quoted` "*) ;;
+ # Blanks at the start of $base_compile will cause this to fail
+ # if we don't check for them as well.
+ *)
+ for z in $available_tags; do
+ if $GREP "^# ### BEGIN LIBTOOL TAG CONFIG: $z$" < "$progpath" > /dev/null; then
+ # Evaluate the configuration.
+ eval "`${SED} -n -e '/^# ### BEGIN LIBTOOL TAG CONFIG: '$z'$/,/^# ### END LIBTOOL TAG CONFIG: '$z'$/p' < $progpath`"
+ CC_quoted=
+ for arg in $CC; do
+ # Double-quote args containing other shell metacharacters.
+ func_quote_for_eval "$arg"
+ CC_quoted="$CC_quoted $func_quote_for_eval_result"
+ done
+ case "$@ " in
+ " $CC "* | "$CC "* | " `$ECHO $CC` "* | "`$ECHO $CC` "* | " $CC_quoted"* | "$CC_quoted "* | " `$ECHO $CC_quoted` "* | "`$ECHO $CC_quoted` "*)
+ # The compiler in the base compile command matches
+ # the one in the tagged configuration.
+ # Assume this is the tagged configuration we want.
+ tagname=$z
+ break
+ ;;
+ esac
+ fi
+ done
+ # If $tagname still isn't set, then no tagged configuration
+ # was found and let the user know that the "--tag" command
+ # line option must be used.
+ if test -z "$tagname"; then
+ func_echo "unable to infer tagged configuration"
+ func_fatal_error "specify a tag with \`--tag'"
+# else
+# func_verbose "using $tagname tagged configuration"
+ fi
+ ;;
+ esac
+ fi
+}
+
+
+
+# func_write_libtool_object output_name pic_name nonpic_name
+# Create a libtool object file (analogous to a ".la" file),
+# but don't create it if we're doing a dry run.
+func_write_libtool_object ()
+{
+ write_libobj=${1}
+ if test "$build_libtool_libs" = yes; then
+ write_lobj=\'${2}\'
+ else
+ write_lobj=none
+ fi
+
+ if test "$build_old_libs" = yes; then
+ write_oldobj=\'${3}\'
+ else
+ write_oldobj=none
+ fi
+
+ $opt_dry_run || {
+ cat >${write_libobj}T <<EOF
+# $write_libobj - a libtool object file
+# Generated by $PROGRAM (GNU $PACKAGE$TIMESTAMP) $VERSION
+#
+# Please DO NOT delete this file!
+# It is necessary for linking the library.
+
+# Name of the PIC object.
+pic_object=$write_lobj
+
+# Name of the non-PIC object
+non_pic_object=$write_oldobj
+
+EOF
+ $MV "${write_libobj}T" "${write_libobj}"
+ }
+}
+
+# func_mode_compile arg...
+func_mode_compile ()
+{
+ $opt_debug
+ # Get the compilation command and the source file.
+ base_compile=
+ srcfile="$nonopt" # always keep a non-empty value in "srcfile"
+ suppress_opt=yes
+ suppress_output=
+ arg_mode=normal
+ libobj=
+ later=
+ pie_flag=
+
+ for arg
+ do
+ case $arg_mode in
+ arg )
+ # do not "continue". Instead, add this to base_compile
+ lastarg="$arg"
+ arg_mode=normal
+ ;;
+
+ target )
+ libobj="$arg"
+ arg_mode=normal
+ continue
+ ;;
+
+ normal )
+ # Accept any command-line options.
+ case $arg in
+ -o)
+ test -n "$libobj" && \
+ func_fatal_error "you cannot specify \`-o' more than once"
+ arg_mode=target
+ continue
+ ;;
+
+ -pie | -fpie | -fPIE)
+ pie_flag="$pie_flag $arg"
+ continue
+ ;;
+
+ -shared | -static | -prefer-pic | -prefer-non-pic)
+ later="$later $arg"
+ continue
+ ;;
+
+ -no-suppress)
+ suppress_opt=no
+ continue
+ ;;
+
+ -Xcompiler)
+ arg_mode=arg # the next one goes into the "base_compile" arg list
+ continue # The current "srcfile" will either be retained or
+ ;; # replaced later. I would guess that would be a bug.
+
+ -Wc,*)
+ func_stripname '-Wc,' '' "$arg"
+ args=$func_stripname_result
+ lastarg=
+ save_ifs="$IFS"; IFS=','
+ for arg in $args; do
+ IFS="$save_ifs"
+ func_quote_for_eval "$arg"
+ lastarg="$lastarg $func_quote_for_eval_result"
+ done
+ IFS="$save_ifs"
+ func_stripname ' ' '' "$lastarg"
+ lastarg=$func_stripname_result
+
+ # Add the arguments to base_compile.
+ base_compile="$base_compile $lastarg"
+ continue
+ ;;
+
+ *)
+ # Accept the current argument as the source file.
+ # The previous "srcfile" becomes the current argument.
+ #
+ lastarg="$srcfile"
+ srcfile="$arg"
+ ;;
+ esac # case $arg
+ ;;
+ esac # case $arg_mode
+
+ # Aesthetically quote the previous argument.
+ func_quote_for_eval "$lastarg"
+ base_compile="$base_compile $func_quote_for_eval_result"
+ done # for arg
+
+ case $arg_mode in
+ arg)
+ func_fatal_error "you must specify an argument for -Xcompile"
+ ;;
+ target)
+ func_fatal_error "you must specify a target with \`-o'"
+ ;;
+ *)
+ # Get the name of the library object.
+ test -z "$libobj" && {
+ func_basename "$srcfile"
+ libobj="$func_basename_result"
+ }
+ ;;
+ esac
+
+ # Recognize several different file suffixes.
+ # If the user specifies -o file.o, it is replaced with file.lo
+ case $libobj in
+ *.[cCFSifmso] | \
+ *.ada | *.adb | *.ads | *.asm | \
+ *.c++ | *.cc | *.ii | *.class | *.cpp | *.cxx | \
+ *.[fF][09]? | *.for | *.java | *.obj | *.sx)
+ func_xform "$libobj"
+ libobj=$func_xform_result
+ ;;
+ esac
+
+ case $libobj in
+ *.lo) func_lo2o "$libobj"; obj=$func_lo2o_result ;;
+ *)
+ func_fatal_error "cannot determine name of library object from \`$libobj'"
+ ;;
+ esac
+
+ func_infer_tag $base_compile
+
+ for arg in $later; do
+ case $arg in
+ -shared)
+ test "$build_libtool_libs" != yes && \
+ func_fatal_configuration "can not build a shared library"
+ build_old_libs=no
+ continue
+ ;;
+
+ -static)
+ build_libtool_libs=no
+ build_old_libs=yes
+ continue
+ ;;
+
+ -prefer-pic)
+ pic_mode=yes
+ continue
+ ;;
+
+ -prefer-non-pic)
+ pic_mode=no
+ continue
+ ;;
+ esac
+ done
+
+ func_quote_for_eval "$libobj"
+ test "X$libobj" != "X$func_quote_for_eval_result" \
+ && $ECHO "X$libobj" | $GREP '[]~#^*{};<>?"'"'"' &()|`$[]' \
+ && func_warning "libobj name \`$libobj' may not contain shell special characters."
+ func_dirname_and_basename "$obj" "/" ""
+ objname="$func_basename_result"
+ xdir="$func_dirname_result"
+ lobj=${xdir}$objdir/$objname
+
+ test -z "$base_compile" && \
+ func_fatal_help "you must specify a compilation command"
+
+ # Delete any leftover library objects.
+ if test "$build_old_libs" = yes; then
+ removelist="$obj $lobj $libobj ${libobj}T"
+ else
+ removelist="$lobj $libobj ${libobj}T"
+ fi
+
+ # On Cygwin there's no "real" PIC flag so we must build both object types
+ case $host_os in
+ cygwin* | mingw* | pw32* | os2* | cegcc*)
+ pic_mode=default
+ ;;
+ esac
+ if test "$pic_mode" = no && test "$deplibs_check_method" != pass_all; then
+ # non-PIC code in shared libraries is not supported
+ pic_mode=default
+ fi
+
+ # Calculate the filename of the output object if compiler does
+ # not support -o with -c
+ if test "$compiler_c_o" = no; then
+ output_obj=`$ECHO "X$srcfile" | $Xsed -e 's%^.*/%%' -e 's%\.[^.]*$%%'`.${objext}
+ lockfile="$output_obj.lock"
+ else
+ output_obj=
+ need_locks=no
+ lockfile=
+ fi
+
+ # Lock this critical section if it is needed
+ # We use this script file to make the link, it avoids creating a new file
+ if test "$need_locks" = yes; then
+ until $opt_dry_run || ln "$progpath" "$lockfile" 2>/dev/null; do
+ func_echo "Waiting for $lockfile to be removed"
+ sleep 2
+ done
+ elif test "$need_locks" = warn; then
+ if test -f "$lockfile"; then
+ $ECHO "\
+*** ERROR, $lockfile exists and contains:
+`cat $lockfile 2>/dev/null`
+
+This indicates that another process is trying to use the same
+temporary object file, and libtool could not work around it because
+your compiler does not support \`-c' and \`-o' together. If you
+repeat this compilation, it may succeed, by chance, but you had better
+avoid parallel builds (make -j) in this platform, or get a better
+compiler."
+
+ $opt_dry_run || $RM $removelist
+ exit $EXIT_FAILURE
+ fi
+ removelist="$removelist $output_obj"
+ $ECHO "$srcfile" > "$lockfile"
+ fi
+
+ $opt_dry_run || $RM $removelist
+ removelist="$removelist $lockfile"
+ trap '$opt_dry_run || $RM $removelist; exit $EXIT_FAILURE' 1 2 15
+
+ if test -n "$fix_srcfile_path"; then
+ eval srcfile=\"$fix_srcfile_path\"
+ fi
+ func_quote_for_eval "$srcfile"
+ qsrcfile=$func_quote_for_eval_result
+
+ # Only build a PIC object if we are building libtool libraries.
+ if test "$build_libtool_libs" = yes; then
+ # Without this assignment, base_compile gets emptied.
+ fbsd_hideous_sh_bug=$base_compile
+
+ if test "$pic_mode" != no; then
+ command="$base_compile $qsrcfile $pic_flag"
+ else
+ # Don't build PIC code
+ command="$base_compile $qsrcfile"
+ fi
+
+ func_mkdir_p "$xdir$objdir"
+
+ if test -z "$output_obj"; then
+ # Place PIC objects in $objdir
+ command="$command -o $lobj"
+ fi
+
+ func_show_eval_locale "$command" \
+ 'test -n "$output_obj" && $RM $removelist; exit $EXIT_FAILURE'
+
+ if test "$need_locks" = warn &&
+ test "X`cat $lockfile 2>/dev/null`" != "X$srcfile"; then
+ $ECHO "\
+*** ERROR, $lockfile contains:
+`cat $lockfile 2>/dev/null`
+
+but it should contain:
+$srcfile
+
+This indicates that another process is trying to use the same
+temporary object file, and libtool could not work around it because
+your compiler does not support \`-c' and \`-o' together. If you
+repeat this compilation, it may succeed, by chance, but you had better
+avoid parallel builds (make -j) in this platform, or get a better
+compiler."
+
+ $opt_dry_run || $RM $removelist
+ exit $EXIT_FAILURE
+ fi
+
+ # Just move the object if needed, then go on to compile the next one
+ if test -n "$output_obj" && test "X$output_obj" != "X$lobj"; then
+ func_show_eval '$MV "$output_obj" "$lobj"' \
+ 'error=$?; $opt_dry_run || $RM $removelist; exit $error'
+ fi
+
+ # Allow error messages only from the first compilation.
+ if test "$suppress_opt" = yes; then
+ suppress_output=' >/dev/null 2>&1'
+ fi
+ fi
+
+ # Only build a position-dependent object if we build old libraries.
+ if test "$build_old_libs" = yes; then
+ if test "$pic_mode" != yes; then
+ # Don't build PIC code
+ command="$base_compile $qsrcfile$pie_flag"
+ else
+ command="$base_compile $qsrcfile $pic_flag"
+ fi
+ if test "$compiler_c_o" = yes; then
+ command="$command -o $obj"
+ fi
+
+ # Suppress compiler output if we already did a PIC compilation.
+ command="$command$suppress_output"
+ func_show_eval_locale "$command" \
+ '$opt_dry_run || $RM $removelist; exit $EXIT_FAILURE'
+
+ if test "$need_locks" = warn &&
+ test "X`cat $lockfile 2>/dev/null`" != "X$srcfile"; then
+ $ECHO "\
+*** ERROR, $lockfile contains:
+`cat $lockfile 2>/dev/null`
+
+but it should contain:
+$srcfile
+
+This indicates that another process is trying to use the same
+temporary object file, and libtool could not work around it because
+your compiler does not support \`-c' and \`-o' together. If you
+repeat this compilation, it may succeed, by chance, but you had better
+avoid parallel builds (make -j) in this platform, or get a better
+compiler."
+
+ $opt_dry_run || $RM $removelist
+ exit $EXIT_FAILURE
+ fi
+
+ # Just move the object if needed
+ if test -n "$output_obj" && test "X$output_obj" != "X$obj"; then
+ func_show_eval '$MV "$output_obj" "$obj"' \
+ 'error=$?; $opt_dry_run || $RM $removelist; exit $error'
+ fi
+ fi
+
+ $opt_dry_run || {
+ func_write_libtool_object "$libobj" "$objdir/$objname" "$objname"
+
+ # Unlock the critical section if it was locked
+ if test "$need_locks" != no; then
+ removelist=$lockfile
+ $RM "$lockfile"
+ fi
+ }
+
+ exit $EXIT_SUCCESS
+}
+
+$opt_help || {
+test "$mode" = compile && func_mode_compile ${1+"$@"}
+}
+
+func_mode_help ()
+{
+ # We need to display help for each of the modes.
+ case $mode in
+ "")
+ # Generic help is extracted from the usage comments
+ # at the start of this file.
+ func_help
+ ;;
+
+ clean)
+ $ECHO \
+"Usage: $progname [OPTION]... --mode=clean RM [RM-OPTION]... FILE...
+
+Remove files from the build directory.
+
+RM is the name of the program to use to delete files associated with each FILE
+(typically \`/bin/rm'). RM-OPTIONS are options (such as \`-f') to be passed
+to RM.
+
+If FILE is a libtool library, object or program, all the files associated
+with it are deleted. Otherwise, only FILE itself is deleted using RM."
+ ;;
+
+ compile)
+ $ECHO \
+"Usage: $progname [OPTION]... --mode=compile COMPILE-COMMAND... SOURCEFILE
+
+Compile a source file into a libtool library object.
+
+This mode accepts the following additional options:
+
+ -o OUTPUT-FILE set the output file name to OUTPUT-FILE
+ -no-suppress do not suppress compiler output for multiple passes
+ -prefer-pic try to building PIC objects only
+ -prefer-non-pic try to building non-PIC objects only
+ -shared do not build a \`.o' file suitable for static linking
+ -static only build a \`.o' file suitable for static linking
+
+COMPILE-COMMAND is a command to be used in creating a \`standard' object file
+from the given SOURCEFILE.
+
+The output file name is determined by removing the directory component from
+SOURCEFILE, then substituting the C source code suffix \`.c' with the
+library object suffix, \`.lo'."
+ ;;
+
+ execute)
+ $ECHO \
+"Usage: $progname [OPTION]... --mode=execute COMMAND [ARGS]...
+
+Automatically set library path, then run a program.
+
+This mode accepts the following additional options:
+
+ -dlopen FILE add the directory containing FILE to the library path
+
+This mode sets the library path environment variable according to \`-dlopen'
+flags.
+
+If any of the ARGS are libtool executable wrappers, then they are translated
+into their corresponding uninstalled binary, and any of their required library
+directories are added to the library path.
+
+Then, COMMAND is executed, with ARGS as arguments."
+ ;;
+
+ finish)
+ $ECHO \
+"Usage: $progname [OPTION]... --mode=finish [LIBDIR]...
+
+Complete the installation of libtool libraries.
+
+Each LIBDIR is a directory that contains libtool libraries.
+
+The commands that this mode executes may require superuser privileges. Use
+the \`--dry-run' option if you just want to see what would be executed."
+ ;;
+
+ install)
+ $ECHO \
+"Usage: $progname [OPTION]... --mode=install INSTALL-COMMAND...
+
+Install executables or libraries.
+
+INSTALL-COMMAND is the installation command. The first component should be
+either the \`install' or \`cp' program.
+
+The following components of INSTALL-COMMAND are treated specially:
+
+ -inst-prefix PREFIX-DIR Use PREFIX-DIR as a staging area for installation
+
+The rest of the components are interpreted as arguments to that command (only
+BSD-compatible install options are recognized)."
+ ;;
+
+ link)
+ $ECHO \
+"Usage: $progname [OPTION]... --mode=link LINK-COMMAND...
+
+Link object files or libraries together to form another library, or to
+create an executable program.
+
+LINK-COMMAND is a command using the C compiler that you would use to create
+a program from several object files.
+
+The following components of LINK-COMMAND are treated specially:
+
+ -all-static do not do any dynamic linking at all
+ -avoid-version do not add a version suffix if possible
+ -dlopen FILE \`-dlpreopen' FILE if it cannot be dlopened at runtime
+ -dlpreopen FILE link in FILE and add its symbols to lt_preloaded_symbols
+ -export-dynamic allow symbols from OUTPUT-FILE to be resolved with dlsym(3)
+ -export-symbols SYMFILE
+ try to export only the symbols listed in SYMFILE
+ -export-symbols-regex REGEX
+ try to export only the symbols matching REGEX
+ -LLIBDIR search LIBDIR for required installed libraries
+ -lNAME OUTPUT-FILE requires the installed library libNAME
+ -module build a library that can dlopened
+ -no-fast-install disable the fast-install mode
+ -no-install link a not-installable executable
+ -no-undefined declare that a library does not refer to external symbols
+ -o OUTPUT-FILE create OUTPUT-FILE from the specified objects
+ -objectlist FILE Use a list of object files found in FILE to specify objects
+ -precious-files-regex REGEX
+ don't remove output files matching REGEX
+ -release RELEASE specify package release information
+ -rpath LIBDIR the created library will eventually be installed in LIBDIR
+ -R[ ]LIBDIR add LIBDIR to the runtime path of programs and libraries
+ -shared only do dynamic linking of libtool libraries
+ -shrext SUFFIX override the standard shared library file extension
+ -static do not do any dynamic linking of uninstalled libtool libraries
+ -static-libtool-libs
+ do not do any dynamic linking of libtool libraries
+ -version-info CURRENT[:REVISION[:AGE]]
+ specify library version info [each variable defaults to 0]
+ -weak LIBNAME declare that the target provides the LIBNAME interface
+
+All other options (arguments beginning with \`-') are ignored.
+
+Every other argument is treated as a filename. Files ending in \`.la' are
+treated as uninstalled libtool libraries, other files are standard or library
+object files.
+
+If the OUTPUT-FILE ends in \`.la', then a libtool library is created,
+only library objects (\`.lo' files) may be specified, and \`-rpath' is
+required, except when creating a convenience library.
+
+If OUTPUT-FILE ends in \`.a' or \`.lib', then a standard library is created
+using \`ar' and \`ranlib', or on Windows using \`lib'.
+
+If OUTPUT-FILE ends in \`.lo' or \`.${objext}', then a reloadable object file
+is created, otherwise an executable program is created."
+ ;;
+
+ uninstall)
+ $ECHO \
+"Usage: $progname [OPTION]... --mode=uninstall RM [RM-OPTION]... FILE...
+
+Remove libraries from an installation directory.
+
+RM is the name of the program to use to delete files associated with each FILE
+(typically \`/bin/rm'). RM-OPTIONS are options (such as \`-f') to be passed
+to RM.
+
+If FILE is a libtool library, all the files associated with it are deleted.
+Otherwise, only FILE itself is deleted using RM."
+ ;;
+
+ *)
+ func_fatal_help "invalid operation mode \`$mode'"
+ ;;
+ esac
+
+ $ECHO
+ $ECHO "Try \`$progname --help' for more information about other modes."
+
+ exit $?
+}
+
+ # Now that we've collected a possible --mode arg, show help if necessary
+ $opt_help && func_mode_help
+
+
+# func_mode_execute arg...
+func_mode_execute ()
+{
+ $opt_debug
+ # The first argument is the command name.
+ cmd="$nonopt"
+ test -z "$cmd" && \
+ func_fatal_help "you must specify a COMMAND"
+
+ # Handle -dlopen flags immediately.
+ for file in $execute_dlfiles; do
+ test -f "$file" \
+ || func_fatal_help "\`$file' is not a file"
+
+ dir=
+ case $file in
+ *.la)
+ # Check to see that this really is a libtool archive.
+ func_lalib_unsafe_p "$file" \
+ || func_fatal_help "\`$lib' is not a valid libtool archive"
+
+ # Read the libtool library.
+ dlname=
+ library_names=
+ func_source "$file"
+
+ # Skip this library if it cannot be dlopened.
+ if test -z "$dlname"; then
+ # Warn if it was a shared library.
+ test -n "$library_names" && \
+ func_warning "\`$file' was not linked with \`-export-dynamic'"
+ continue
+ fi
+
+ func_dirname "$file" "" "."
+ dir="$func_dirname_result"
+
+ if test -f "$dir/$objdir/$dlname"; then
+ dir="$dir/$objdir"
+ else
+ if test ! -f "$dir/$dlname"; then
+ func_fatal_error "cannot find \`$dlname' in \`$dir' or \`$dir/$objdir'"
+ fi
+ fi
+ ;;
+
+ *.lo)
+ # Just add the directory containing the .lo file.
+ func_dirname "$file" "" "."
+ dir="$func_dirname_result"
+ ;;
+
+ *)
+ func_warning "\`-dlopen' is ignored for non-libtool libraries and objects"
+ continue
+ ;;
+ esac
+
+ # Get the absolute pathname.
+ absdir=`cd "$dir" && pwd`
+ test -n "$absdir" && dir="$absdir"
+
+ # Now add the directory to shlibpath_var.
+ if eval "test -z \"\$$shlibpath_var\""; then
+ eval "$shlibpath_var=\"\$dir\""
+ else
+ eval "$shlibpath_var=\"\$dir:\$$shlibpath_var\""
+ fi
+ done
+
+ # This variable tells wrapper scripts just to set shlibpath_var
+ # rather than running their programs.
+ libtool_execute_magic="$magic"
+
+ # Check if any of the arguments is a wrapper script.
+ args=
+ for file
+ do
+ case $file in
+ -*) ;;
+ *)
+ # Do a test to see if this is really a libtool program.
+ if func_ltwrapper_script_p "$file"; then
+ func_source "$file"
+ # Transform arg to wrapped name.
+ file="$progdir/$program"
+ elif func_ltwrapper_executable_p "$file"; then
+ func_ltwrapper_scriptname "$file"
+ func_source "$func_ltwrapper_scriptname_result"
+ # Transform arg to wrapped name.
+ file="$progdir/$program"
+ fi
+ ;;
+ esac
+ # Quote arguments (to preserve shell metacharacters).
+ func_quote_for_eval "$file"
+ args="$args $func_quote_for_eval_result"
+ done
+
+ if test "X$opt_dry_run" = Xfalse; then
+ if test -n "$shlibpath_var"; then
+ # Export the shlibpath_var.
+ eval "export $shlibpath_var"
+ fi
+
+ # Restore saved environment variables
+ for lt_var in LANG LANGUAGE LC_ALL LC_CTYPE LC_COLLATE LC_MESSAGES
+ do
+ eval "if test \"\${save_$lt_var+set}\" = set; then
+ $lt_var=\$save_$lt_var; export $lt_var
+ else
+ $lt_unset $lt_var
+ fi"
+ done
+
+ # Now prepare to actually exec the command.
+ exec_cmd="\$cmd$args"
+ else
+ # Display what would be done.
+ if test -n "$shlibpath_var"; then
+ eval "\$ECHO \"\$shlibpath_var=\$$shlibpath_var\""
+ $ECHO "export $shlibpath_var"
+ fi
+ $ECHO "$cmd$args"
+ exit $EXIT_SUCCESS
+ fi
+}
+
+test "$mode" = execute && func_mode_execute ${1+"$@"}
+
+
+# func_mode_finish arg...
+func_mode_finish ()
+{
+ $opt_debug
+ libdirs="$nonopt"
+ admincmds=
+
+ if test -n "$finish_cmds$finish_eval" && test -n "$libdirs"; then
+ for dir
+ do
+ libdirs="$libdirs $dir"
+ done
+
+ for libdir in $libdirs; do
+ if test -n "$finish_cmds"; then
+ # Do each command in the finish commands.
+ func_execute_cmds "$finish_cmds" 'admincmds="$admincmds
+'"$cmd"'"'
+ fi
+ if test -n "$finish_eval"; then
+ # Do the single finish_eval.
+ eval cmds=\"$finish_eval\"
+ $opt_dry_run || eval "$cmds" || admincmds="$admincmds
+ $cmds"
+ fi
+ done
+ fi
+
+ # Exit here if they wanted silent mode.
+ $opt_silent && exit $EXIT_SUCCESS
+
+ $ECHO "X----------------------------------------------------------------------" | $Xsed
+ $ECHO "Libraries have been installed in:"
+ for libdir in $libdirs; do
+ $ECHO " $libdir"
+ done
+ $ECHO
+ $ECHO "If you ever happen to want to link against installed libraries"
+ $ECHO "in a given directory, LIBDIR, you must either use libtool, and"
+ $ECHO "specify the full pathname of the library, or use the \`-LLIBDIR'"
+ $ECHO "flag during linking and do at least one of the following:"
+ if test -n "$shlibpath_var"; then
+ $ECHO " - add LIBDIR to the \`$shlibpath_var' environment variable"
+ $ECHO " during execution"
+ fi
+ if test -n "$runpath_var"; then
+ $ECHO " - add LIBDIR to the \`$runpath_var' environment variable"
+ $ECHO " during linking"
+ fi
+ if test -n "$hardcode_libdir_flag_spec"; then
+ libdir=LIBDIR
+ eval flag=\"$hardcode_libdir_flag_spec\"
+
+ $ECHO " - use the \`$flag' linker flag"
+ fi
+ if test -n "$admincmds"; then
+ $ECHO " - have your system administrator run these commands:$admincmds"
+ fi
+ if test -f /etc/ld.so.conf; then
+ $ECHO " - have your system administrator add LIBDIR to \`/etc/ld.so.conf'"
+ fi
+ $ECHO
+
+ $ECHO "See any operating system documentation about shared libraries for"
+ case $host in
+ solaris2.[6789]|solaris2.1[0-9])
+ $ECHO "more information, such as the ld(1), crle(1) and ld.so(8) manual"
+ $ECHO "pages."
+ ;;
+ *)
+ $ECHO "more information, such as the ld(1) and ld.so(8) manual pages."
+ ;;
+ esac
+ $ECHO "X----------------------------------------------------------------------" | $Xsed
+ exit $EXIT_SUCCESS
+}
+
+test "$mode" = finish && func_mode_finish ${1+"$@"}
+
+
+# func_mode_install arg...
+func_mode_install ()
+{
+ $opt_debug
+ # There may be an optional sh(1) argument at the beginning of
+ # install_prog (especially on Windows NT).
+ if test "$nonopt" = "$SHELL" || test "$nonopt" = /bin/sh ||
+ # Allow the use of GNU shtool's install command.
+ $ECHO "X$nonopt" | $GREP shtool >/dev/null; then
+ # Aesthetically quote it.
+ func_quote_for_eval "$nonopt"
+ install_prog="$func_quote_for_eval_result "
+ arg=$1
+ shift
+ else
+ install_prog=
+ arg=$nonopt
+ fi
+
+ # The real first argument should be the name of the installation program.
+ # Aesthetically quote it.
+ func_quote_for_eval "$arg"
+ install_prog="$install_prog$func_quote_for_eval_result"
+
+ # We need to accept at least all the BSD install flags.
+ dest=
+ files=
+ opts=
+ prev=
+ install_type=
+ isdir=no
+ stripme=
+ for arg
+ do
+ if test -n "$dest"; then
+ files="$files $dest"
+ dest=$arg
+ continue
+ fi
+
+ case $arg in
+ -d) isdir=yes ;;
+ -f)
+ case " $install_prog " in
+ *[\\\ /]cp\ *) ;;
+ *) prev=$arg ;;
+ esac
+ ;;
+ -g | -m | -o)
+ prev=$arg
+ ;;
+ -s)
+ stripme=" -s"
+ continue
+ ;;
+ -*)
+ ;;
+ *)
+ # If the previous option needed an argument, then skip it.
+ if test -n "$prev"; then
+ prev=
+ else
+ dest=$arg
+ continue
+ fi
+ ;;
+ esac
+
+ # Aesthetically quote the argument.
+ func_quote_for_eval "$arg"
+ install_prog="$install_prog $func_quote_for_eval_result"
+ done
+
+ test -z "$install_prog" && \
+ func_fatal_help "you must specify an install program"
+
+ test -n "$prev" && \
+ func_fatal_help "the \`$prev' option requires an argument"
+
+ if test -z "$files"; then
+ if test -z "$dest"; then
+ func_fatal_help "no file or destination specified"
+ else
+ func_fatal_help "you must specify a destination"
+ fi
+ fi
+
+ # Strip any trailing slash from the destination.
+ func_stripname '' '/' "$dest"
+ dest=$func_stripname_result
+
+ # Check to see that the destination is a directory.
+ test -d "$dest" && isdir=yes
+ if test "$isdir" = yes; then
+ destdir="$dest"
+ destname=
+ else
+ func_dirname_and_basename "$dest" "" "."
+ destdir="$func_dirname_result"
+ destname="$func_basename_result"
+
+ # Not a directory, so check to see that there is only one file specified.
+ set dummy $files; shift
+ test "$#" -gt 1 && \
+ func_fatal_help "\`$dest' is not a directory"
+ fi
+ case $destdir in
+ [\\/]* | [A-Za-z]:[\\/]*) ;;
+ *)
+ for file in $files; do
+ case $file in
+ *.lo) ;;
+ *)
+ func_fatal_help "\`$destdir' must be an absolute directory name"
+ ;;
+ esac
+ done
+ ;;
+ esac
+
+ # This variable tells wrapper scripts just to set variables rather
+ # than running their programs.
+ libtool_install_magic="$magic"
+
+ staticlibs=
+ future_libdirs=
+ current_libdirs=
+ for file in $files; do
+
+ # Do each installation.
+ case $file in
+ *.$libext)
+ # Do the static libraries later.
+ staticlibs="$staticlibs $file"
+ ;;
+
+ *.la)
+ # Check to see that this really is a libtool archive.
+ func_lalib_unsafe_p "$file" \
+ || func_fatal_help "\`$file' is not a valid libtool archive"
+
+ library_names=
+ old_library=
+ relink_command=
+ func_source "$file"
+
+ # Add the libdir to current_libdirs if it is the destination.
+ if test "X$destdir" = "X$libdir"; then
+ case "$current_libdirs " in
+ *" $libdir "*) ;;
+ *) current_libdirs="$current_libdirs $libdir" ;;
+ esac
+ else
+ # Note the libdir as a future libdir.
+ case "$future_libdirs " in
+ *" $libdir "*) ;;
+ *) future_libdirs="$future_libdirs $libdir" ;;
+ esac
+ fi
+
+ func_dirname "$file" "/" ""
+ dir="$func_dirname_result"
+ dir="$dir$objdir"
+
+ if test -n "$relink_command"; then
+ # Determine the prefix the user has applied to our future dir.
+ inst_prefix_dir=`$ECHO "X$destdir" | $Xsed -e "s%$libdir\$%%"`
+
+ # Don't allow the user to place us outside of our expected
+ # location b/c this prevents finding dependent libraries that
+ # are installed to the same prefix.
+ # At present, this check doesn't affect windows .dll's that
+ # are installed into $libdir/../bin (currently, that works fine)
+ # but it's something to keep an eye on.
+ test "$inst_prefix_dir" = "$destdir" && \
+ func_fatal_error "error: cannot install \`$file' to a directory not ending in $libdir"
+
+ if test -n "$inst_prefix_dir"; then
+ # Stick the inst_prefix_dir data into the link command.
+ relink_command=`$ECHO "X$relink_command" | $Xsed -e "s%@inst_prefix_dir@%-inst-prefix-dir $inst_prefix_dir%"`
+ else
+ relink_command=`$ECHO "X$relink_command" | $Xsed -e "s%@inst_prefix_dir@%%"`
+ fi
+
+ func_warning "relinking \`$file'"
+ func_show_eval "$relink_command" \
+ 'func_fatal_error "error: relink \`$file'\'' with the above command before installing it"'
+ fi
+
+ # See the names of the shared library.
+ set dummy $library_names; shift
+ if test -n "$1"; then
+ realname="$1"
+ shift
+
+ srcname="$realname"
+ test -n "$relink_command" && srcname="$realname"T
+
+ # Install the shared library and build the symlinks.
+ func_show_eval "$install_prog $dir/$srcname $destdir/$realname" \
+ 'exit $?'
+ tstripme="$stripme"
+ case $host_os in
+ cygwin* | mingw* | pw32* | cegcc*)
+ case $realname in
+ *.dll.a)
+ tstripme=""
+ ;;
+ esac
+ ;;
+ esac
+ if test -n "$tstripme" && test -n "$striplib"; then
+ func_show_eval "$striplib $destdir/$realname" 'exit $?'
+ fi
+
+ if test "$#" -gt 0; then
+ # Delete the old symlinks, and create new ones.
+ # Try `ln -sf' first, because the `ln' binary might depend on
+ # the symlink we replace! Solaris /bin/ln does not understand -f,
+ # so we also need to try rm && ln -s.
+ for linkname
+ do
+ test "$linkname" != "$realname" \
+ && func_show_eval "(cd $destdir && { $LN_S -f $realname $linkname || { $RM $linkname && $LN_S $realname $linkname; }; })"
+ done
+ fi
+
+ # Do each command in the postinstall commands.
+ lib="$destdir/$realname"
+ func_execute_cmds "$postinstall_cmds" 'exit $?'
+ fi
+
+ # Install the pseudo-library for information purposes.
+ func_basename "$file"
+ name="$func_basename_result"
+ instname="$dir/$name"i
+ func_show_eval "$install_prog $instname $destdir/$name" 'exit $?'
+
+ # Maybe install the static library, too.
+ test -n "$old_library" && staticlibs="$staticlibs $dir/$old_library"
+ ;;
+
+ *.lo)
+ # Install (i.e. copy) a libtool object.
+
+ # Figure out destination file name, if it wasn't already specified.
+ if test -n "$destname"; then
+ destfile="$destdir/$destname"
+ else
+ func_basename "$file"
+ destfile="$func_basename_result"
+ destfile="$destdir/$destfile"
+ fi
+
+ # Deduce the name of the destination old-style object file.
+ case $destfile in
+ *.lo)
+ func_lo2o "$destfile"
+ staticdest=$func_lo2o_result
+ ;;
+ *.$objext)
+ staticdest="$destfile"
+ destfile=
+ ;;
+ *)
+ func_fatal_help "cannot copy a libtool object to \`$destfile'"
+ ;;
+ esac
+
+ # Install the libtool object if requested.
+ test -n "$destfile" && \
+ func_show_eval "$install_prog $file $destfile" 'exit $?'
+
+ # Install the old object if enabled.
+ if test "$build_old_libs" = yes; then
+ # Deduce the name of the old-style object file.
+ func_lo2o "$file"
+ staticobj=$func_lo2o_result
+ func_show_eval "$install_prog \$staticobj \$staticdest" 'exit $?'
+ fi
+ exit $EXIT_SUCCESS
+ ;;
+
+ *)
+ # Figure out destination file name, if it wasn't already specified.
+ if test -n "$destname"; then
+ destfile="$destdir/$destname"
+ else
+ func_basename "$file"
+ destfile="$func_basename_result"
+ destfile="$destdir/$destfile"
+ fi
+
+ # If the file is missing, and there is a .exe on the end, strip it
+ # because it is most likely a libtool script we actually want to
+ # install
+ stripped_ext=""
+ case $file in
+ *.exe)
+ if test ! -f "$file"; then
+ func_stripname '' '.exe' "$file"
+ file=$func_stripname_result
+ stripped_ext=".exe"
+ fi
+ ;;
+ esac
+
+ # Do a test to see if this is really a libtool program.
+ case $host in
+ *cygwin* | *mingw*)
+ if func_ltwrapper_executable_p "$file"; then
+ func_ltwrapper_scriptname "$file"
+ wrapper=$func_ltwrapper_scriptname_result
+ else
+ func_stripname '' '.exe' "$file"
+ wrapper=$func_stripname_result
+ fi
+ ;;
+ *)
+ wrapper=$file
+ ;;
+ esac
+ if func_ltwrapper_script_p "$wrapper"; then
+ notinst_deplibs=
+ relink_command=
+
+ func_source "$wrapper"
+
+ # Check the variables that should have been set.
+ test -z "$generated_by_libtool_version" && \
+ func_fatal_error "invalid libtool wrapper script \`$wrapper'"
+
+ finalize=yes
+ for lib in $notinst_deplibs; do
+ # Check to see that each library is installed.
+ libdir=
+ if test -f "$lib"; then
+ func_source "$lib"
+ fi
+ libfile="$libdir/"`$ECHO "X$lib" | $Xsed -e 's%^.*/%%g'` ### testsuite: skip nested quoting test
+ if test -n "$libdir" && test ! -f "$libfile"; then
+ func_warning "\`$lib' has not been installed in \`$libdir'"
+ finalize=no
+ fi
+ done
+
+ relink_command=
+ func_source "$wrapper"
+
+ outputname=
+ if test "$fast_install" = no && test -n "$relink_command"; then
+ $opt_dry_run || {
+ if test "$finalize" = yes; then
+ tmpdir=`func_mktempdir`
+ func_basename "$file$stripped_ext"
+ file="$func_basename_result"
+ outputname="$tmpdir/$file"
+ # Replace the output file specification.
+ relink_command=`$ECHO "X$relink_command" | $Xsed -e 's%@OUTPUT@%'"$outputname"'%g'`
+
+ $opt_silent || {
+ func_quote_for_expand "$relink_command"
+ eval "func_echo $func_quote_for_expand_result"
+ }
+ if eval "$relink_command"; then :
+ else
+ func_error "error: relink \`$file' with the above command before installing it"
+ $opt_dry_run || ${RM}r "$tmpdir"
+ continue
+ fi
+ file="$outputname"
+ else
+ func_warning "cannot relink \`$file'"
+ fi
+ }
+ else
+ # Install the binary that we compiled earlier.
+ file=`$ECHO "X$file$stripped_ext" | $Xsed -e "s%\([^/]*\)$%$objdir/\1%"`
+ fi
+ fi
+
+ # remove .exe since cygwin /usr/bin/install will append another
+ # one anyway
+ case $install_prog,$host in
+ */usr/bin/install*,*cygwin*)
+ case $file:$destfile in
+ *.exe:*.exe)
+ # this is ok
+ ;;
+ *.exe:*)
+ destfile=$destfile.exe
+ ;;
+ *:*.exe)
+ func_stripname '' '.exe' "$destfile"
+ destfile=$func_stripname_result
+ ;;
+ esac
+ ;;
+ esac
+ func_show_eval "$install_prog\$stripme \$file \$destfile" 'exit $?'
+ $opt_dry_run || if test -n "$outputname"; then
+ ${RM}r "$tmpdir"
+ fi
+ ;;
+ esac
+ done
+
+ for file in $staticlibs; do
+ func_basename "$file"
+ name="$func_basename_result"
+
+ # Set up the ranlib parameters.
+ oldlib="$destdir/$name"
+
+ func_show_eval "$install_prog \$file \$oldlib" 'exit $?'
+
+ if test -n "$stripme" && test -n "$old_striplib"; then
+ func_show_eval "$old_striplib $oldlib" 'exit $?'
+ fi
+
+ # Do each command in the postinstall commands.
+ func_execute_cmds "$old_postinstall_cmds" 'exit $?'
+ done
+
+ test -n "$future_libdirs" && \
+ func_warning "remember to run \`$progname --finish$future_libdirs'"
+
+ if test -n "$current_libdirs"; then
+ # Maybe just do a dry run.
+ $opt_dry_run && current_libdirs=" -n$current_libdirs"
+ exec_cmd='$SHELL $progpath $preserve_args --finish$current_libdirs'
+ else
+ exit $EXIT_SUCCESS
+ fi
+}
+
+test "$mode" = install && func_mode_install ${1+"$@"}
+
+
+# func_generate_dlsyms outputname originator pic_p
+# Extract symbols from dlprefiles and create ${outputname}S.o with
+# a dlpreopen symbol table.
+func_generate_dlsyms ()
+{
+ $opt_debug
+ my_outputname="$1"
+ my_originator="$2"
+ my_pic_p="${3-no}"
+ my_prefix=`$ECHO "$my_originator" | sed 's%[^a-zA-Z0-9]%_%g'`
+ my_dlsyms=
+
+ if test -n "$dlfiles$dlprefiles" || test "$dlself" != no; then
+ if test -n "$NM" && test -n "$global_symbol_pipe"; then
+ my_dlsyms="${my_outputname}S.c"
+ else
+ func_error "not configured to extract global symbols from dlpreopened files"
+ fi
+ fi
+
+ if test -n "$my_dlsyms"; then
+ case $my_dlsyms in
+ "") ;;
+ *.c)
+ # Discover the nlist of each of the dlfiles.
+ nlist="$output_objdir/${my_outputname}.nm"
+
+ func_show_eval "$RM $nlist ${nlist}S ${nlist}T"
+
+ # Parse the name list into a source file.
+ func_verbose "creating $output_objdir/$my_dlsyms"
+
+ $opt_dry_run || $ECHO > "$output_objdir/$my_dlsyms" "\
+/* $my_dlsyms - symbol resolution table for \`$my_outputname' dlsym emulation. */
+/* Generated by $PROGRAM (GNU $PACKAGE$TIMESTAMP) $VERSION */
+
+#ifdef __cplusplus
+extern \"C\" {
+#endif
+
+/* External symbol declarations for the compiler. */\
+"
+
+ if test "$dlself" = yes; then
+ func_verbose "generating symbol list for \`$output'"
+
+ $opt_dry_run || echo ': @PROGRAM@ ' > "$nlist"
+
+ # Add our own program objects to the symbol list.
+ progfiles=`$ECHO "X$objs$old_deplibs" | $SP2NL | $Xsed -e "$lo2o" | $NL2SP`
+ for progfile in $progfiles; do
+ func_verbose "extracting global C symbols from \`$progfile'"
+ $opt_dry_run || eval "$NM $progfile | $global_symbol_pipe >> '$nlist'"
+ done
+
+ if test -n "$exclude_expsyms"; then
+ $opt_dry_run || {
+ eval '$EGREP -v " ($exclude_expsyms)$" "$nlist" > "$nlist"T'
+ eval '$MV "$nlist"T "$nlist"'
+ }
+ fi
+
+ if test -n "$export_symbols_regex"; then
+ $opt_dry_run || {
+ eval '$EGREP -e "$export_symbols_regex" "$nlist" > "$nlist"T'
+ eval '$MV "$nlist"T "$nlist"'
+ }
+ fi
+
+ # Prepare the list of exported symbols
+ if test -z "$export_symbols"; then
+ export_symbols="$output_objdir/$outputname.exp"
+ $opt_dry_run || {
+ $RM $export_symbols
+ eval "${SED} -n -e '/^: @PROGRAM@ $/d' -e 's/^.* \(.*\)$/\1/p' "'< "$nlist" > "$export_symbols"'
+ case $host in
+ *cygwin* | *mingw* | *cegcc* )
+ eval "echo EXPORTS "'> "$output_objdir/$outputname.def"'
+ eval 'cat "$export_symbols" >> "$output_objdir/$outputname.def"'
+ ;;
+ esac
+ }
+ else
+ $opt_dry_run || {
+ eval "${SED} -e 's/\([].[*^$]\)/\\\\\1/g' -e 's/^/ /' -e 's/$/$/'"' < "$export_symbols" > "$output_objdir/$outputname.exp"'
+ eval '$GREP -f "$output_objdir/$outputname.exp" < "$nlist" > "$nlist"T'
+ eval '$MV "$nlist"T "$nlist"'
+ case $host in
+ *cygwin | *mingw* | *cegcc* )
+ eval "echo EXPORTS "'> "$output_objdir/$outputname.def"'
+ eval 'cat "$nlist" >> "$output_objdir/$outputname.def"'
+ ;;
+ esac
+ }
+ fi
+ fi
+
+ for dlprefile in $dlprefiles; do
+ func_verbose "extracting global C symbols from \`$dlprefile'"
+ func_basename "$dlprefile"
+ name="$func_basename_result"
+ $opt_dry_run || {
+ eval '$ECHO ": $name " >> "$nlist"'
+ eval "$NM $dlprefile 2>/dev/null | $global_symbol_pipe >> '$nlist'"
+ }
+ done
+
+ $opt_dry_run || {
+ # Make sure we have at least an empty file.
+ test -f "$nlist" || : > "$nlist"
+
+ if test -n "$exclude_expsyms"; then
+ $EGREP -v " ($exclude_expsyms)$" "$nlist" > "$nlist"T
+ $MV "$nlist"T "$nlist"
+ fi
+
+ # Try sorting and uniquifying the output.
+ if $GREP -v "^: " < "$nlist" |
+ if sort -k 3 </dev/null >/dev/null 2>&1; then
+ sort -k 3
+ else
+ sort +2
+ fi |
+ uniq > "$nlist"S; then
+ :
+ else
+ $GREP -v "^: " < "$nlist" > "$nlist"S
+ fi
+
+ if test -f "$nlist"S; then
+ eval "$global_symbol_to_cdecl"' < "$nlist"S >> "$output_objdir/$my_dlsyms"'
+ else
+ $ECHO '/* NONE */' >> "$output_objdir/$my_dlsyms"
+ fi
+
+ $ECHO >> "$output_objdir/$my_dlsyms" "\
+
+/* The mapping between symbol names and symbols. */
+typedef struct {
+ const char *name;
+ void *address;
+} lt_dlsymlist;
+"
+ case $host in
+ *cygwin* | *mingw* | *cegcc* )
+ $ECHO >> "$output_objdir/$my_dlsyms" "\
+/* DATA imports from DLLs on WIN32 con't be const, because
+ runtime relocations are performed -- see ld's documentation
+ on pseudo-relocs. */"
+ lt_dlsym_const= ;;
+ *osf5*)
+ echo >> "$output_objdir/$my_dlsyms" "\
+/* This system does not cope well with relocations in const data */"
+ lt_dlsym_const= ;;
+ *)
+ lt_dlsym_const=const ;;
+ esac
+
+ $ECHO >> "$output_objdir/$my_dlsyms" "\
+extern $lt_dlsym_const lt_dlsymlist
+lt_${my_prefix}_LTX_preloaded_symbols[];
+$lt_dlsym_const lt_dlsymlist
+lt_${my_prefix}_LTX_preloaded_symbols[] =
+{\
+ { \"$my_originator\", (void *) 0 },"
+
+ case $need_lib_prefix in
+ no)
+ eval "$global_symbol_to_c_name_address" < "$nlist" >> "$output_objdir/$my_dlsyms"
+ ;;
+ *)
+ eval "$global_symbol_to_c_name_address_lib_prefix" < "$nlist" >> "$output_objdir/$my_dlsyms"
+ ;;
+ esac
+ $ECHO >> "$output_objdir/$my_dlsyms" "\
+ {0, (void *) 0}
+};
+
+/* This works around a problem in FreeBSD linker */
+#ifdef FREEBSD_WORKAROUND
+static const void *lt_preloaded_setup() {
+ return lt_${my_prefix}_LTX_preloaded_symbols;
+}
+#endif
+
+#ifdef __cplusplus
+}
+#endif\
+"
+ } # !$opt_dry_run
+
+ pic_flag_for_symtable=
+ case "$compile_command " in
+ *" -static "*) ;;
+ *)
+ case $host in
+ # compiling the symbol table file with pic_flag works around
+ # a FreeBSD bug that causes programs to crash when -lm is
+ # linked before any other PIC object. But we must not use
+ # pic_flag when linking with -static. The problem exists in
+ # FreeBSD 2.2.6 and is fixed in FreeBSD 3.1.
+ *-*-freebsd2*|*-*-freebsd3.0*|*-*-freebsdelf3.0*)
+ pic_flag_for_symtable=" $pic_flag -DFREEBSD_WORKAROUND" ;;
+ *-*-hpux*)
+ pic_flag_for_symtable=" $pic_flag" ;;
+ *)
+ if test "X$my_pic_p" != Xno; then
+ pic_flag_for_symtable=" $pic_flag"
+ fi
+ ;;
+ esac
+ ;;
+ esac
+ symtab_cflags=
+ for arg in $LTCFLAGS; do
+ case $arg in
+ -pie | -fpie | -fPIE) ;;
+ *) symtab_cflags="$symtab_cflags $arg" ;;
+ esac
+ done
+
+ # Now compile the dynamic symbol file.
+ func_show_eval '(cd $output_objdir && $LTCC$symtab_cflags -c$no_builtin_flag$pic_flag_for_symtable "$my_dlsyms")' 'exit $?'
+
+ # Clean up the generated files.
+ func_show_eval '$RM "$output_objdir/$my_dlsyms" "$nlist" "${nlist}S" "${nlist}T"'
+
+ # Transform the symbol file into the correct name.
+ symfileobj="$output_objdir/${my_outputname}S.$objext"
+ case $host in
+ *cygwin* | *mingw* | *cegcc* )
+ if test -f "$output_objdir/$my_outputname.def"; then
+ compile_command=`$ECHO "X$compile_command" | $Xsed -e "s%@SYMFILE@%$output_objdir/$my_outputname.def $symfileobj%"`
+ finalize_command=`$ECHO "X$finalize_command" | $Xsed -e "s%@SYMFILE@%$output_objdir/$my_outputname.def $symfileobj%"`
+ else
+ compile_command=`$ECHO "X$compile_command" | $Xsed -e "s%@SYMFILE@%$symfileobj%"`
+ finalize_command=`$ECHO "X$finalize_command" | $Xsed -e "s%@SYMFILE@%$symfileobj%"`
+ fi
+ ;;
+ *)
+ compile_command=`$ECHO "X$compile_command" | $Xsed -e "s%@SYMFILE@%$symfileobj%"`
+ finalize_command=`$ECHO "X$finalize_command" | $Xsed -e "s%@SYMFILE@%$symfileobj%"`
+ ;;
+ esac
+ ;;
+ *)
+ func_fatal_error "unknown suffix for \`$my_dlsyms'"
+ ;;
+ esac
+ else
+ # We keep going just in case the user didn't refer to
+ # lt_preloaded_symbols. The linker will fail if global_symbol_pipe
+ # really was required.
+
+ # Nullify the symbol file.
+ compile_command=`$ECHO "X$compile_command" | $Xsed -e "s% @SYMFILE@%%"`
+ finalize_command=`$ECHO "X$finalize_command" | $Xsed -e "s% @SYMFILE@%%"`
+ fi
+}
+
+# func_win32_libid arg
+# return the library type of file 'arg'
+#
+# Need a lot of goo to handle *both* DLLs and import libs
+# Has to be a shell function in order to 'eat' the argument
+# that is supplied when $file_magic_command is called.
+func_win32_libid ()
+{
+ $opt_debug
+ win32_libid_type="unknown"
+ win32_fileres=`file -L $1 2>/dev/null`
+ case $win32_fileres in
+ *ar\ archive\ import\ library*) # definitely import
+ win32_libid_type="x86 archive import"
+ ;;
+ *ar\ archive*) # could be an import, or static
+ if eval $OBJDUMP -f $1 | $SED -e '10q' 2>/dev/null |
+ $EGREP 'file format pe-i386(.*architecture: i386)?' >/dev/null ; then
+ win32_nmres=`eval $NM -f posix -A $1 |
+ $SED -n -e '
+ 1,100{
+ / I /{
+ s,.*,import,
+ p
+ q
+ }
+ }'`
+ case $win32_nmres in
+ import*) win32_libid_type="x86 archive import";;
+ *) win32_libid_type="x86 archive static";;
+ esac
+ fi
+ ;;
+ *DLL*)
+ win32_libid_type="x86 DLL"
+ ;;
+ *executable*) # but shell scripts are "executable" too...
+ case $win32_fileres in
+ *MS\ Windows\ PE\ Intel*)
+ win32_libid_type="x86 DLL"
+ ;;
+ esac
+ ;;
+ esac
+ $ECHO "$win32_libid_type"
+}
+
+
+
+# func_extract_an_archive dir oldlib
+func_extract_an_archive ()
+{
+ $opt_debug
+ f_ex_an_ar_dir="$1"; shift
+ f_ex_an_ar_oldlib="$1"
+ func_show_eval "(cd \$f_ex_an_ar_dir && $AR x \"\$f_ex_an_ar_oldlib\")" 'exit $?'
+ if ($AR t "$f_ex_an_ar_oldlib" | sort | sort -uc >/dev/null 2>&1); then
+ :
+ else
+ func_fatal_error "object name conflicts in archive: $f_ex_an_ar_dir/$f_ex_an_ar_oldlib"
+ fi
+}
+
+
+# func_extract_archives gentop oldlib ...
+func_extract_archives ()
+{
+ $opt_debug
+ my_gentop="$1"; shift
+ my_oldlibs=${1+"$@"}
+ my_oldobjs=""
+ my_xlib=""
+ my_xabs=""
+ my_xdir=""
+
+ for my_xlib in $my_oldlibs; do
+ # Extract the objects.
+ case $my_xlib in
+ [\\/]* | [A-Za-z]:[\\/]*) my_xabs="$my_xlib" ;;
+ *) my_xabs=`pwd`"/$my_xlib" ;;
+ esac
+ func_basename "$my_xlib"
+ my_xlib="$func_basename_result"
+ my_xlib_u=$my_xlib
+ while :; do
+ case " $extracted_archives " in
+ *" $my_xlib_u "*)
+ func_arith $extracted_serial + 1
+ extracted_serial=$func_arith_result
+ my_xlib_u=lt$extracted_serial-$my_xlib ;;
+ *) break ;;
+ esac
+ done
+ extracted_archives="$extracted_archives $my_xlib_u"
+ my_xdir="$my_gentop/$my_xlib_u"
+
+ func_mkdir_p "$my_xdir"
+
+ case $host in
+ *-darwin*)
+ func_verbose "Extracting $my_xabs"
+ # Do not bother doing anything if just a dry run
+ $opt_dry_run || {
+ darwin_orig_dir=`pwd`
+ cd $my_xdir || exit $?
+ darwin_archive=$my_xabs
+ darwin_curdir=`pwd`
+ darwin_base_archive=`basename "$darwin_archive"`
+ darwin_arches=`$LIPO -info "$darwin_archive" 2>/dev/null | $GREP Architectures 2>/dev/null || true`
+ if test -n "$darwin_arches"; then
+ darwin_arches=`$ECHO "$darwin_arches" | $SED -e 's/.*are://'`
+ darwin_arch=
+ func_verbose "$darwin_base_archive has multiple architectures $darwin_arches"
+ for darwin_arch in $darwin_arches ; do
+ func_mkdir_p "unfat-$$/${darwin_base_archive}-${darwin_arch}"
+ $LIPO -thin $darwin_arch -output "unfat-$$/${darwin_base_archive}-${darwin_arch}/${darwin_base_archive}" "${darwin_archive}"
+ cd "unfat-$$/${darwin_base_archive}-${darwin_arch}"
+ func_extract_an_archive "`pwd`" "${darwin_base_archive}"
+ cd "$darwin_curdir"
+ $RM "unfat-$$/${darwin_base_archive}-${darwin_arch}/${darwin_base_archive}"
+ done # $darwin_arches
+ ## Okay now we've a bunch of thin objects, gotta fatten them up :)
+ darwin_filelist=`find unfat-$$ -type f -name \*.o -print -o -name \*.lo -print | $SED -e "$basename" | sort -u`
+ darwin_file=
+ darwin_files=
+ for darwin_file in $darwin_filelist; do
+ darwin_files=`find unfat-$$ -name $darwin_file -print | $NL2SP`
+ $LIPO -create -output "$darwin_file" $darwin_files
+ done # $darwin_filelist
+ $RM -rf unfat-$$
+ cd "$darwin_orig_dir"
+ else
+ cd $darwin_orig_dir
+ func_extract_an_archive "$my_xdir" "$my_xabs"
+ fi # $darwin_arches
+ } # !$opt_dry_run
+ ;;
+ *)
+ func_extract_an_archive "$my_xdir" "$my_xabs"
+ ;;
+ esac
+ my_oldobjs="$my_oldobjs "`find $my_xdir -name \*.$objext -print -o -name \*.lo -print | $NL2SP`
+ done
+
+ func_extract_archives_result="$my_oldobjs"
+}
+
+
+
+# func_emit_wrapper_part1 [arg=no]
+#
+# Emit the first part of a libtool wrapper script on stdout.
+# For more information, see the description associated with
+# func_emit_wrapper(), below.
+func_emit_wrapper_part1 ()
+{
+ func_emit_wrapper_part1_arg1=no
+ if test -n "$1" ; then
+ func_emit_wrapper_part1_arg1=$1
+ fi
+
+ $ECHO "\
+#! $SHELL
+
+# $output - temporary wrapper script for $objdir/$outputname
+# Generated by $PROGRAM (GNU $PACKAGE$TIMESTAMP) $VERSION
+#
+# The $output program cannot be directly executed until all the libtool
+# libraries that it depends on are installed.
+#
+# This wrapper script should never be moved out of the build directory.
+# If it is, it will not operate correctly.
+
+# Sed substitution that helps us do robust quoting. It backslashifies
+# metacharacters that are still active within double-quoted strings.
+Xsed='${SED} -e 1s/^X//'
+sed_quote_subst='$sed_quote_subst'
+
+# Be Bourne compatible
+if test -n \"\${ZSH_VERSION+set}\" && (emulate sh) >/dev/null 2>&1; then
+ emulate sh
+ NULLCMD=:
+ # Zsh 3.x and 4.x performs word splitting on \${1+\"\$@\"}, which
+ # is contrary to our usage. Disable this feature.
+ alias -g '\${1+\"\$@\"}'='\"\$@\"'
+ setopt NO_GLOB_SUBST
+else
+ case \`(set -o) 2>/dev/null\` in *posix*) set -o posix;; esac
+fi
+BIN_SH=xpg4; export BIN_SH # for Tru64
+DUALCASE=1; export DUALCASE # for MKS sh
+
+# The HP-UX ksh and POSIX shell print the target directory to stdout
+# if CDPATH is set.
+(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
+
+relink_command=\"$relink_command\"
+
+# This environment variable determines our operation mode.
+if test \"\$libtool_install_magic\" = \"$magic\"; then
+ # install mode needs the following variables:
+ generated_by_libtool_version='$macro_version'
+ notinst_deplibs='$notinst_deplibs'
+else
+ # When we are sourced in execute mode, \$file and \$ECHO are already set.
+ if test \"\$libtool_execute_magic\" != \"$magic\"; then
+ ECHO=\"$qecho\"
+ file=\"\$0\"
+ # Make sure echo works.
+ if test \"X\$1\" = X--no-reexec; then
+ # Discard the --no-reexec flag, and continue.
+ shift
+ elif test \"X\`{ \$ECHO '\t'; } 2>/dev/null\`\" = 'X\t'; then
+ # Yippee, \$ECHO works!
+ :
+ else
+ # Restart under the correct shell, and then maybe \$ECHO will work.
+ exec $SHELL \"\$0\" --no-reexec \${1+\"\$@\"}
+ fi
+ fi\
+"
+ $ECHO "\
+
+ # Find the directory that this script lives in.
+ thisdir=\`\$ECHO \"X\$file\" | \$Xsed -e 's%/[^/]*$%%'\`
+ test \"x\$thisdir\" = \"x\$file\" && thisdir=.
+
+ # Follow symbolic links until we get to the real thisdir.
+ file=\`ls -ld \"\$file\" | ${SED} -n 's/.*-> //p'\`
+ while test -n \"\$file\"; do
+ destdir=\`\$ECHO \"X\$file\" | \$Xsed -e 's%/[^/]*\$%%'\`
+
+ # If there was a directory component, then change thisdir.
+ if test \"x\$destdir\" != \"x\$file\"; then
+ case \"\$destdir\" in
+ [\\\\/]* | [A-Za-z]:[\\\\/]*) thisdir=\"\$destdir\" ;;
+ *) thisdir=\"\$thisdir/\$destdir\" ;;
+ esac
+ fi
+
+ file=\`\$ECHO \"X\$file\" | \$Xsed -e 's%^.*/%%'\`
+ file=\`ls -ld \"\$thisdir/\$file\" | ${SED} -n 's/.*-> //p'\`
+ done
+"
+}
+# end: func_emit_wrapper_part1
+
+# func_emit_wrapper_part2 [arg=no]
+#
+# Emit the second part of a libtool wrapper script on stdout.
+# For more information, see the description associated with
+# func_emit_wrapper(), below.
+func_emit_wrapper_part2 ()
+{
+ func_emit_wrapper_part2_arg1=no
+ if test -n "$1" ; then
+ func_emit_wrapper_part2_arg1=$1
+ fi
+
+ $ECHO "\
+
+ # Usually 'no', except on cygwin/mingw when embedded into
+ # the cwrapper.
+ WRAPPER_SCRIPT_BELONGS_IN_OBJDIR=$func_emit_wrapper_part2_arg1
+ if test \"\$WRAPPER_SCRIPT_BELONGS_IN_OBJDIR\" = \"yes\"; then
+ # special case for '.'
+ if test \"\$thisdir\" = \".\"; then
+ thisdir=\`pwd\`
+ fi
+ # remove .libs from thisdir
+ case \"\$thisdir\" in
+ *[\\\\/]$objdir ) thisdir=\`\$ECHO \"X\$thisdir\" | \$Xsed -e 's%[\\\\/][^\\\\/]*$%%'\` ;;
+ $objdir ) thisdir=. ;;
+ esac
+ fi
+
+ # Try to get the absolute directory name.
+ absdir=\`cd \"\$thisdir\" && pwd\`
+ test -n \"\$absdir\" && thisdir=\"\$absdir\"
+"
+
+ if test "$fast_install" = yes; then
+ $ECHO "\
+ program=lt-'$outputname'$exeext
+ progdir=\"\$thisdir/$objdir\"
+
+ if test ! -f \"\$progdir/\$program\" ||
+ { file=\`ls -1dt \"\$progdir/\$program\" \"\$progdir/../\$program\" 2>/dev/null | ${SED} 1q\`; \\
+ test \"X\$file\" != \"X\$progdir/\$program\"; }; then
+
+ file=\"\$\$-\$program\"
+
+ if test ! -d \"\$progdir\"; then
+ $MKDIR \"\$progdir\"
+ else
+ $RM \"\$progdir/\$file\"
+ fi"
+
+ $ECHO "\
+
+ # relink executable if necessary
+ if test -n \"\$relink_command\"; then
+ if relink_command_output=\`eval \$relink_command 2>&1\`; then :
+ else
+ $ECHO \"\$relink_command_output\" >&2
+ $RM \"\$progdir/\$file\"
+ exit 1
+ fi
+ fi
+
+ $MV \"\$progdir/\$file\" \"\$progdir/\$program\" 2>/dev/null ||
+ { $RM \"\$progdir/\$program\";
+ $MV \"\$progdir/\$file\" \"\$progdir/\$program\"; }
+ $RM \"\$progdir/\$file\"
+ fi"
+ else
+ $ECHO "\
+ program='$outputname'
+ progdir=\"\$thisdir/$objdir\"
+"
+ fi
+
+ $ECHO "\
+
+ if test -f \"\$progdir/\$program\"; then"
+
+ # Export our shlibpath_var if we have one.
+ if test "$shlibpath_overrides_runpath" = yes && test -n "$shlibpath_var" && test -n "$temp_rpath"; then
+ $ECHO "\
+ # Add our own library path to $shlibpath_var
+ $shlibpath_var=\"$temp_rpath\$$shlibpath_var\"
+
+ # Some systems cannot cope with colon-terminated $shlibpath_var
+ # The second colon is a workaround for a bug in BeOS R4 sed
+ $shlibpath_var=\`\$ECHO \"X\$$shlibpath_var\" | \$Xsed -e 's/::*\$//'\`
+
+ export $shlibpath_var
+"
+ fi
+
+ # fixup the dll searchpath if we need to.
+ if test -n "$dllsearchpath"; then
+ $ECHO "\
+ # Add the dll search path components to the executable PATH
+ PATH=$dllsearchpath:\$PATH
+"
+ fi
+
+ $ECHO "\
+ if test \"\$libtool_execute_magic\" != \"$magic\"; then
+ # Run the actual program with our arguments.
+"
+ case $host in
+ # Backslashes separate directories on plain windows
+ *-*-mingw | *-*-os2* | *-cegcc*)
+ $ECHO "\
+ exec \"\$progdir\\\\\$program\" \${1+\"\$@\"}
+"
+ ;;
+
+ *)
+ $ECHO "\
+ exec \"\$progdir/\$program\" \${1+\"\$@\"}
+"
+ ;;
+ esac
+ $ECHO "\
+ \$ECHO \"\$0: cannot exec \$program \$*\" 1>&2
+ exit 1
+ fi
+ else
+ # The program doesn't exist.
+ \$ECHO \"\$0: error: \\\`\$progdir/\$program' does not exist\" 1>&2
+ \$ECHO \"This script is just a wrapper for \$program.\" 1>&2
+ $ECHO \"See the $PACKAGE documentation for more information.\" 1>&2
+ exit 1
+ fi
+fi\
+"
+}
+# end: func_emit_wrapper_part2
+
+
+# func_emit_wrapper [arg=no]
+#
+# Emit a libtool wrapper script on stdout.
+# Don't directly open a file because we may want to
+# incorporate the script contents within a cygwin/mingw
+# wrapper executable. Must ONLY be called from within
+# func_mode_link because it depends on a number of variables
+# set therein.
+#
+# ARG is the value that the WRAPPER_SCRIPT_BELONGS_IN_OBJDIR
+# variable will take. If 'yes', then the emitted script
+# will assume that the directory in which it is stored is
+# the $objdir directory. This is a cygwin/mingw-specific
+# behavior.
+func_emit_wrapper ()
+{
+ func_emit_wrapper_arg1=no
+ if test -n "$1" ; then
+ func_emit_wrapper_arg1=$1
+ fi
+
+ # split this up so that func_emit_cwrapperexe_src
+ # can call each part independently.
+ func_emit_wrapper_part1 "${func_emit_wrapper_arg1}"
+ func_emit_wrapper_part2 "${func_emit_wrapper_arg1}"
+}
+
+
+# func_to_host_path arg
+#
+# Convert paths to host format when used with build tools.
+# Intended for use with "native" mingw (where libtool itself
+# is running under the msys shell), or in the following cross-
+# build environments:
+# $build $host
+# mingw (msys) mingw [e.g. native]
+# cygwin mingw
+# *nix + wine mingw
+# where wine is equipped with the `winepath' executable.
+# In the native mingw case, the (msys) shell automatically
+# converts paths for any non-msys applications it launches,
+# but that facility isn't available from inside the cwrapper.
+# Similar accommodations are necessary for $host mingw and
+# $build cygwin. Calling this function does no harm for other
+# $host/$build combinations not listed above.
+#
+# ARG is the path (on $build) that should be converted to
+# the proper representation for $host. The result is stored
+# in $func_to_host_path_result.
+func_to_host_path ()
+{
+ func_to_host_path_result="$1"
+ if test -n "$1" ; then
+ case $host in
+ *mingw* )
+ lt_sed_naive_backslashify='s|\\\\*|\\|g;s|/|\\|g;s|\\|\\\\|g'
+ case $build in
+ *mingw* ) # actually, msys
+ # awkward: cmd appends spaces to result
+ lt_sed_strip_trailing_spaces="s/[ ]*\$//"
+ func_to_host_path_tmp1=`( cmd //c echo "$1" |\
+ $SED -e "$lt_sed_strip_trailing_spaces" ) 2>/dev/null || echo ""`
+ func_to_host_path_result=`echo "$func_to_host_path_tmp1" |\
+ $SED -e "$lt_sed_naive_backslashify"`
+ ;;
+ *cygwin* )
+ func_to_host_path_tmp1=`cygpath -w "$1"`
+ func_to_host_path_result=`echo "$func_to_host_path_tmp1" |\
+ $SED -e "$lt_sed_naive_backslashify"`
+ ;;
+ * )
+ # Unfortunately, winepath does not exit with a non-zero
+ # error code, so we are forced to check the contents of
+ # stdout. On the other hand, if the command is not
+ # found, the shell will set an exit code of 127 and print
+ # *an error message* to stdout. So we must check for both
+ # error code of zero AND non-empty stdout, which explains
+ # the odd construction:
+ func_to_host_path_tmp1=`winepath -w "$1" 2>/dev/null`
+ if test "$?" -eq 0 && test -n "${func_to_host_path_tmp1}"; then
+ func_to_host_path_result=`echo "$func_to_host_path_tmp1" |\
+ $SED -e "$lt_sed_naive_backslashify"`
+ else
+ # Allow warning below.
+ func_to_host_path_result=""
+ fi
+ ;;
+ esac
+ if test -z "$func_to_host_path_result" ; then
+ func_error "Could not determine host path corresponding to"
+ func_error " '$1'"
+ func_error "Continuing, but uninstalled executables may not work."
+ # Fallback:
+ func_to_host_path_result="$1"
+ fi
+ ;;
+ esac
+ fi
+}
+# end: func_to_host_path
+
+# func_to_host_pathlist arg
+#
+# Convert pathlists to host format when used with build tools.
+# See func_to_host_path(), above. This function supports the
+# following $build/$host combinations (but does no harm for
+# combinations not listed here):
+# $build $host
+# mingw (msys) mingw [e.g. native]
+# cygwin mingw
+# *nix + wine mingw
+#
+# Path separators are also converted from $build format to
+# $host format. If ARG begins or ends with a path separator
+# character, it is preserved (but converted to $host format)
+# on output.
+#
+# ARG is a pathlist (on $build) that should be converted to
+# the proper representation on $host. The result is stored
+# in $func_to_host_pathlist_result.
+func_to_host_pathlist ()
+{
+ func_to_host_pathlist_result="$1"
+ if test -n "$1" ; then
+ case $host in
+ *mingw* )
+ lt_sed_naive_backslashify='s|\\\\*|\\|g;s|/|\\|g;s|\\|\\\\|g'
+ # Remove leading and trailing path separator characters from
+ # ARG. msys behavior is inconsistent here, cygpath turns them
+ # into '.;' and ';.', and winepath ignores them completely.
+ func_to_host_pathlist_tmp2="$1"
+ # Once set for this call, this variable should not be
+ # reassigned. It is used in tha fallback case.
+ func_to_host_pathlist_tmp1=`echo "$func_to_host_pathlist_tmp2" |\
+ $SED -e 's|^:*||' -e 's|:*$||'`
+ case $build in
+ *mingw* ) # Actually, msys.
+ # Awkward: cmd appends spaces to result.
+ lt_sed_strip_trailing_spaces="s/[ ]*\$//"
+ func_to_host_pathlist_tmp2=`( cmd //c echo "$func_to_host_pathlist_tmp1" |\
+ $SED -e "$lt_sed_strip_trailing_spaces" ) 2>/dev/null || echo ""`
+ func_to_host_pathlist_result=`echo "$func_to_host_pathlist_tmp2" |\
+ $SED -e "$lt_sed_naive_backslashify"`
+ ;;
+ *cygwin* )
+ func_to_host_pathlist_tmp2=`cygpath -w -p "$func_to_host_pathlist_tmp1"`
+ func_to_host_pathlist_result=`echo "$func_to_host_pathlist_tmp2" |\
+ $SED -e "$lt_sed_naive_backslashify"`
+ ;;
+ * )
+ # unfortunately, winepath doesn't convert pathlists
+ func_to_host_pathlist_result=""
+ func_to_host_pathlist_oldIFS=$IFS
+ IFS=:
+ for func_to_host_pathlist_f in $func_to_host_pathlist_tmp1 ; do
+ IFS=$func_to_host_pathlist_oldIFS
+ if test -n "$func_to_host_pathlist_f" ; then
+ func_to_host_path "$func_to_host_pathlist_f"
+ if test -n "$func_to_host_path_result" ; then
+ if test -z "$func_to_host_pathlist_result" ; then
+ func_to_host_pathlist_result="$func_to_host_path_result"
+ else
+ func_to_host_pathlist_result="$func_to_host_pathlist_result;$func_to_host_path_result"
+ fi
+ fi
+ fi
+ IFS=:
+ done
+ IFS=$func_to_host_pathlist_oldIFS
+ ;;
+ esac
+ if test -z "$func_to_host_pathlist_result" ; then
+ func_error "Could not determine the host path(s) corresponding to"
+ func_error " '$1'"
+ func_error "Continuing, but uninstalled executables may not work."
+ # Fallback. This may break if $1 contains DOS-style drive
+ # specifications. The fix is not to complicate the expression
+ # below, but for the user to provide a working wine installation
+ # with winepath so that path translation in the cross-to-mingw
+ # case works properly.
+ lt_replace_pathsep_nix_to_dos="s|:|;|g"
+ func_to_host_pathlist_result=`echo "$func_to_host_pathlist_tmp1" |\
+ $SED -e "$lt_replace_pathsep_nix_to_dos"`
+ fi
+ # Now, add the leading and trailing path separators back
+ case "$1" in
+ :* ) func_to_host_pathlist_result=";$func_to_host_pathlist_result"
+ ;;
+ esac
+ case "$1" in
+ *: ) func_to_host_pathlist_result="$func_to_host_pathlist_result;"
+ ;;
+ esac
+ ;;
+ esac
+ fi
+}
+# end: func_to_host_pathlist
+
+# func_emit_cwrapperexe_src
+# emit the source code for a wrapper executable on stdout
+# Must ONLY be called from within func_mode_link because
+# it depends on a number of variable set therein.
+func_emit_cwrapperexe_src ()
+{
+ cat <<EOF
+
+/* $cwrappersource - temporary wrapper executable for $objdir/$outputname
+ Generated by $PROGRAM (GNU $PACKAGE$TIMESTAMP) $VERSION
+
+ The $output program cannot be directly executed until all the libtool
+ libraries that it depends on are installed.
+
+ This wrapper executable should never be moved out of the build directory.
+ If it is, it will not operate correctly.
+
+ Currently, it simply execs the wrapper *script* "$SHELL $output",
+ but could eventually absorb all of the scripts functionality and
+ exec $objdir/$outputname directly.
+*/
+EOF
+ cat <<"EOF"
+#include <stdio.h>
+#include <stdlib.h>
+#ifdef _MSC_VER
+# include <direct.h>
+# include <process.h>
+# include <io.h>
+# define setmode _setmode
+#else
+# include <unistd.h>
+# include <stdint.h>
+# ifdef __CYGWIN__
+# include <io.h>
+# define HAVE_SETENV
+# ifdef __STRICT_ANSI__
+char *realpath (const char *, char *);
+int putenv (char *);
+int setenv (const char *, const char *, int);
+# endif
+# endif
+#endif
+#include <malloc.h>
+#include <stdarg.h>
+#include <assert.h>
+#include <string.h>
+#include <ctype.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <sys/stat.h>
+
+#if defined(PATH_MAX)
+# define LT_PATHMAX PATH_MAX
+#elif defined(MAXPATHLEN)
+# define LT_PATHMAX MAXPATHLEN
+#else
+# define LT_PATHMAX 1024
+#endif
+
+#ifndef S_IXOTH
+# define S_IXOTH 0
+#endif
+#ifndef S_IXGRP
+# define S_IXGRP 0
+#endif
+
+#ifdef _MSC_VER
+# define S_IXUSR _S_IEXEC
+# define stat _stat
+# ifndef _INTPTR_T_DEFINED
+# define intptr_t int
+# endif
+#endif
+
+#ifndef DIR_SEPARATOR
+# define DIR_SEPARATOR '/'
+# define PATH_SEPARATOR ':'
+#endif
+
+#if defined (_WIN32) || defined (__MSDOS__) || defined (__DJGPP__) || \
+ defined (__OS2__)
+# define HAVE_DOS_BASED_FILE_SYSTEM
+# define FOPEN_WB "wb"
+# ifndef DIR_SEPARATOR_2
+# define DIR_SEPARATOR_2 '\\'
+# endif
+# ifndef PATH_SEPARATOR_2
+# define PATH_SEPARATOR_2 ';'
+# endif
+#endif
+
+#ifndef DIR_SEPARATOR_2
+# define IS_DIR_SEPARATOR(ch) ((ch) == DIR_SEPARATOR)
+#else /* DIR_SEPARATOR_2 */
+# define IS_DIR_SEPARATOR(ch) \
+ (((ch) == DIR_SEPARATOR) || ((ch) == DIR_SEPARATOR_2))
+#endif /* DIR_SEPARATOR_2 */
+
+#ifndef PATH_SEPARATOR_2
+# define IS_PATH_SEPARATOR(ch) ((ch) == PATH_SEPARATOR)
+#else /* PATH_SEPARATOR_2 */
+# define IS_PATH_SEPARATOR(ch) ((ch) == PATH_SEPARATOR_2)
+#endif /* PATH_SEPARATOR_2 */
+
+#ifdef __CYGWIN__
+# define FOPEN_WB "wb"
+#endif
+
+#ifndef FOPEN_WB
+# define FOPEN_WB "w"
+#endif
+#ifndef _O_BINARY
+# define _O_BINARY 0
+#endif
+
+#define XMALLOC(type, num) ((type *) xmalloc ((num) * sizeof(type)))
+#define XFREE(stale) do { \
+ if (stale) { free ((void *) stale); stale = 0; } \
+} while (0)
+
+#undef LTWRAPPER_DEBUGPRINTF
+#if defined DEBUGWRAPPER
+# define LTWRAPPER_DEBUGPRINTF(args) ltwrapper_debugprintf args
+static void
+ltwrapper_debugprintf (const char *fmt, ...)
+{
+ va_list args;
+ va_start (args, fmt);
+ (void) vfprintf (stderr, fmt, args);
+ va_end (args);
+}
+#else
+# define LTWRAPPER_DEBUGPRINTF(args)
+#endif
+
+const char *program_name = NULL;
+
+void *xmalloc (size_t num);
+char *xstrdup (const char *string);
+const char *base_name (const char *name);
+char *find_executable (const char *wrapper);
+char *chase_symlinks (const char *pathspec);
+int make_executable (const char *path);
+int check_executable (const char *path);
+char *strendzap (char *str, const char *pat);
+void lt_fatal (const char *message, ...);
+void lt_setenv (const char *name, const char *value);
+char *lt_extend_str (const char *orig_value, const char *add, int to_end);
+void lt_opt_process_env_set (const char *arg);
+void lt_opt_process_env_prepend (const char *arg);
+void lt_opt_process_env_append (const char *arg);
+int lt_split_name_value (const char *arg, char** name, char** value);
+void lt_update_exe_path (const char *name, const char *value);
+void lt_update_lib_path (const char *name, const char *value);
+
+static const char *script_text_part1 =
+EOF
+
+ func_emit_wrapper_part1 yes |
+ $SED -e 's/\([\\"]\)/\\\1/g' \
+ -e 's/^/ "/' -e 's/$/\\n"/'
+ echo ";"
+ cat <<EOF
+
+static const char *script_text_part2 =
+EOF
+ func_emit_wrapper_part2 yes |
+ $SED -e 's/\([\\"]\)/\\\1/g' \
+ -e 's/^/ "/' -e 's/$/\\n"/'
+ echo ";"
+
+ cat <<EOF
+const char * MAGIC_EXE = "$magic_exe";
+const char * LIB_PATH_VARNAME = "$shlibpath_var";
+EOF
+
+ if test "$shlibpath_overrides_runpath" = yes && test -n "$shlibpath_var" && test -n "$temp_rpath"; then
+ func_to_host_pathlist "$temp_rpath"
+ cat <<EOF
+const char * LIB_PATH_VALUE = "$func_to_host_pathlist_result";
+EOF
+ else
+ cat <<"EOF"
+const char * LIB_PATH_VALUE = "";
+EOF
+ fi
+
+ if test -n "$dllsearchpath"; then
+ func_to_host_pathlist "$dllsearchpath:"
+ cat <<EOF
+const char * EXE_PATH_VARNAME = "PATH";
+const char * EXE_PATH_VALUE = "$func_to_host_pathlist_result";
+EOF
+ else
+ cat <<"EOF"
+const char * EXE_PATH_VARNAME = "";
+const char * EXE_PATH_VALUE = "";
+EOF
+ fi
+
+ if test "$fast_install" = yes; then
+ cat <<EOF
+const char * TARGET_PROGRAM_NAME = "lt-$outputname"; /* hopefully, no .exe */
+EOF
+ else
+ cat <<EOF
+const char * TARGET_PROGRAM_NAME = "$outputname"; /* hopefully, no .exe */
+EOF
+ fi
+
+
+ cat <<"EOF"
+
+#define LTWRAPPER_OPTION_PREFIX "--lt-"
+#define LTWRAPPER_OPTION_PREFIX_LENGTH 5
+
+static const size_t opt_prefix_len = LTWRAPPER_OPTION_PREFIX_LENGTH;
+static const char *ltwrapper_option_prefix = LTWRAPPER_OPTION_PREFIX;
+
+static const char *dumpscript_opt = LTWRAPPER_OPTION_PREFIX "dump-script";
+
+static const size_t env_set_opt_len = LTWRAPPER_OPTION_PREFIX_LENGTH + 7;
+static const char *env_set_opt = LTWRAPPER_OPTION_PREFIX "env-set";
+ /* argument is putenv-style "foo=bar", value of foo is set to bar */
+
+static const size_t env_prepend_opt_len = LTWRAPPER_OPTION_PREFIX_LENGTH + 11;
+static const char *env_prepend_opt = LTWRAPPER_OPTION_PREFIX "env-prepend";
+ /* argument is putenv-style "foo=bar", new value of foo is bar${foo} */
+
+static const size_t env_append_opt_len = LTWRAPPER_OPTION_PREFIX_LENGTH + 10;
+static const char *env_append_opt = LTWRAPPER_OPTION_PREFIX "env-append";
+ /* argument is putenv-style "foo=bar", new value of foo is ${foo}bar */
+
+int
+main (int argc, char *argv[])
+{
+ char **newargz;
+ int newargc;
+ char *tmp_pathspec;
+ char *actual_cwrapper_path;
+ char *actual_cwrapper_name;
+ char *target_name;
+ char *lt_argv_zero;
+ intptr_t rval = 127;
+
+ int i;
+
+ program_name = (char *) xstrdup (base_name (argv[0]));
+ LTWRAPPER_DEBUGPRINTF (("(main) argv[0] : %s\n", argv[0]));
+ LTWRAPPER_DEBUGPRINTF (("(main) program_name : %s\n", program_name));
+
+ /* very simple arg parsing; don't want to rely on getopt */
+ for (i = 1; i < argc; i++)
+ {
+ if (strcmp (argv[i], dumpscript_opt) == 0)
+ {
+EOF
+ case "$host" in
+ *mingw* | *cygwin* )
+ # make stdout use "unix" line endings
+ echo " setmode(1,_O_BINARY);"
+ ;;
+ esac
+
+ cat <<"EOF"
+ printf ("%s", script_text_part1);
+ printf ("%s", script_text_part2);
+ return 0;
+ }
+ }
+
+ newargz = XMALLOC (char *, argc + 1);
+ tmp_pathspec = find_executable (argv[0]);
+ if (tmp_pathspec == NULL)
+ lt_fatal ("Couldn't find %s", argv[0]);
+ LTWRAPPER_DEBUGPRINTF (("(main) found exe (before symlink chase) at : %s\n",
+ tmp_pathspec));
+
+ actual_cwrapper_path = chase_symlinks (tmp_pathspec);
+ LTWRAPPER_DEBUGPRINTF (("(main) found exe (after symlink chase) at : %s\n",
+ actual_cwrapper_path));
+ XFREE (tmp_pathspec);
+
+ actual_cwrapper_name = xstrdup( base_name (actual_cwrapper_path));
+ strendzap (actual_cwrapper_path, actual_cwrapper_name);
+
+ /* wrapper name transforms */
+ strendzap (actual_cwrapper_name, ".exe");
+ tmp_pathspec = lt_extend_str (actual_cwrapper_name, ".exe", 1);
+ XFREE (actual_cwrapper_name);
+ actual_cwrapper_name = tmp_pathspec;
+ tmp_pathspec = 0;
+
+ /* target_name transforms -- use actual target program name; might have lt- prefix */
+ target_name = xstrdup (base_name (TARGET_PROGRAM_NAME));
+ strendzap (target_name, ".exe");
+ tmp_pathspec = lt_extend_str (target_name, ".exe", 1);
+ XFREE (target_name);
+ target_name = tmp_pathspec;
+ tmp_pathspec = 0;
+
+ LTWRAPPER_DEBUGPRINTF (("(main) libtool target name: %s\n",
+ target_name));
+EOF
+
+ cat <<EOF
+ newargz[0] =
+ XMALLOC (char, (strlen (actual_cwrapper_path) +
+ strlen ("$objdir") + 1 + strlen (actual_cwrapper_name) + 1));
+ strcpy (newargz[0], actual_cwrapper_path);
+ strcat (newargz[0], "$objdir");
+ strcat (newargz[0], "/");
+EOF
+
+ cat <<"EOF"
+ /* stop here, and copy so we don't have to do this twice */
+ tmp_pathspec = xstrdup (newargz[0]);
+
+ /* do NOT want the lt- prefix here, so use actual_cwrapper_name */
+ strcat (newargz[0], actual_cwrapper_name);
+
+ /* DO want the lt- prefix here if it exists, so use target_name */
+ lt_argv_zero = lt_extend_str (tmp_pathspec, target_name, 1);
+ XFREE (tmp_pathspec);
+ tmp_pathspec = NULL;
+EOF
+
+ case $host_os in
+ mingw*)
+ cat <<"EOF"
+ {
+ char* p;
+ while ((p = strchr (newargz[0], '\\')) != NULL)
+ {
+ *p = '/';
+ }
+ while ((p = strchr (lt_argv_zero, '\\')) != NULL)
+ {
+ *p = '/';
+ }
+ }
+EOF
+ ;;
+ esac
+
+ cat <<"EOF"
+ XFREE (target_name);
+ XFREE (actual_cwrapper_path);
+ XFREE (actual_cwrapper_name);
+
+ lt_setenv ("BIN_SH", "xpg4"); /* for Tru64 */
+ lt_setenv ("DUALCASE", "1"); /* for MSK sh */
+ lt_update_lib_path (LIB_PATH_VARNAME, LIB_PATH_VALUE);
+ lt_update_exe_path (EXE_PATH_VARNAME, EXE_PATH_VALUE);
+
+ newargc=0;
+ for (i = 1; i < argc; i++)
+ {
+ if (strncmp (argv[i], env_set_opt, env_set_opt_len) == 0)
+ {
+ if (argv[i][env_set_opt_len] == '=')
+ {
+ const char *p = argv[i] + env_set_opt_len + 1;
+ lt_opt_process_env_set (p);
+ }
+ else if (argv[i][env_set_opt_len] == '\0' && i + 1 < argc)
+ {
+ lt_opt_process_env_set (argv[++i]); /* don't copy */
+ }
+ else
+ lt_fatal ("%s missing required argument", env_set_opt);
+ continue;
+ }
+ if (strncmp (argv[i], env_prepend_opt, env_prepend_opt_len) == 0)
+ {
+ if (argv[i][env_prepend_opt_len] == '=')
+ {
+ const char *p = argv[i] + env_prepend_opt_len + 1;
+ lt_opt_process_env_prepend (p);
+ }
+ else if (argv[i][env_prepend_opt_len] == '\0' && i + 1 < argc)
+ {
+ lt_opt_process_env_prepend (argv[++i]); /* don't copy */
+ }
+ else
+ lt_fatal ("%s missing required argument", env_prepend_opt);
+ continue;
+ }
+ if (strncmp (argv[i], env_append_opt, env_append_opt_len) == 0)
+ {
+ if (argv[i][env_append_opt_len] == '=')
+ {
+ const char *p = argv[i] + env_append_opt_len + 1;
+ lt_opt_process_env_append (p);
+ }
+ else if (argv[i][env_append_opt_len] == '\0' && i + 1 < argc)
+ {
+ lt_opt_process_env_append (argv[++i]); /* don't copy */
+ }
+ else
+ lt_fatal ("%s missing required argument", env_append_opt);
+ continue;
+ }
+ if (strncmp (argv[i], ltwrapper_option_prefix, opt_prefix_len) == 0)
+ {
+ /* however, if there is an option in the LTWRAPPER_OPTION_PREFIX
+ namespace, but it is not one of the ones we know about and
+ have already dealt with, above (inluding dump-script), then
+ report an error. Otherwise, targets might begin to believe
+ they are allowed to use options in the LTWRAPPER_OPTION_PREFIX
+ namespace. The first time any user complains about this, we'll
+ need to make LTWRAPPER_OPTION_PREFIX a configure-time option
+ or a configure.ac-settable value.
+ */
+ lt_fatal ("Unrecognized option in %s namespace: '%s'",
+ ltwrapper_option_prefix, argv[i]);
+ }
+ /* otherwise ... */
+ newargz[++newargc] = xstrdup (argv[i]);
+ }
+ newargz[++newargc] = NULL;
+
+ LTWRAPPER_DEBUGPRINTF (("(main) lt_argv_zero : %s\n", (lt_argv_zero ? lt_argv_zero : "<NULL>")));
+ for (i = 0; i < newargc; i++)
+ {
+ LTWRAPPER_DEBUGPRINTF (("(main) newargz[%d] : %s\n", i, (newargz[i] ? newargz[i] : "<NULL>")));
+ }
+
+EOF
+
+ case $host_os in
+ mingw*)
+ cat <<"EOF"
+ /* execv doesn't actually work on mingw as expected on unix */
+ rval = _spawnv (_P_WAIT, lt_argv_zero, (const char * const *) newargz);
+ if (rval == -1)
+ {
+ /* failed to start process */
+ LTWRAPPER_DEBUGPRINTF (("(main) failed to launch target \"%s\": errno = %d\n", lt_argv_zero, errno));
+ return 127;
+ }
+ return rval;
+EOF
+ ;;
+ *)
+ cat <<"EOF"
+ execv (lt_argv_zero, newargz);
+ return rval; /* =127, but avoids unused variable warning */
+EOF
+ ;;
+ esac
+
+ cat <<"EOF"
+}
+
+void *
+xmalloc (size_t num)
+{
+ void *p = (void *) malloc (num);
+ if (!p)
+ lt_fatal ("Memory exhausted");
+
+ return p;
+}
+
+char *
+xstrdup (const char *string)
+{
+ return string ? strcpy ((char *) xmalloc (strlen (string) + 1),
+ string) : NULL;
+}
+
+const char *
+base_name (const char *name)
+{
+ const char *base;
+
+#if defined (HAVE_DOS_BASED_FILE_SYSTEM)
+ /* Skip over the disk name in MSDOS pathnames. */
+ if (isalpha ((unsigned char) name[0]) && name[1] == ':')
+ name += 2;
+#endif
+
+ for (base = name; *name; name++)
+ if (IS_DIR_SEPARATOR (*name))
+ base = name + 1;
+ return base;
+}
+
+int
+check_executable (const char *path)
+{
+ struct stat st;
+
+ LTWRAPPER_DEBUGPRINTF (("(check_executable) : %s\n",
+ path ? (*path ? path : "EMPTY!") : "NULL!"));
+ if ((!path) || (!*path))
+ return 0;
+
+ if ((stat (path, &st) >= 0)
+ && (st.st_mode & (S_IXUSR | S_IXGRP | S_IXOTH)))
+ return 1;
+ else
+ return 0;
+}
+
+int
+make_executable (const char *path)
+{
+ int rval = 0;
+ struct stat st;
+
+ LTWRAPPER_DEBUGPRINTF (("(make_executable) : %s\n",
+ path ? (*path ? path : "EMPTY!") : "NULL!"));
+ if ((!path) || (!*path))
+ return 0;
+
+ if (stat (path, &st) >= 0)
+ {
+ rval = chmod (path, st.st_mode | S_IXOTH | S_IXGRP | S_IXUSR);
+ }
+ return rval;
+}
+
+/* Searches for the full path of the wrapper. Returns
+ newly allocated full path name if found, NULL otherwise
+ Does not chase symlinks, even on platforms that support them.
+*/
+char *
+find_executable (const char *wrapper)
+{
+ int has_slash = 0;
+ const char *p;
+ const char *p_next;
+ /* static buffer for getcwd */
+ char tmp[LT_PATHMAX + 1];
+ int tmp_len;
+ char *concat_name;
+
+ LTWRAPPER_DEBUGPRINTF (("(find_executable) : %s\n",
+ wrapper ? (*wrapper ? wrapper : "EMPTY!") : "NULL!"));
+
+ if ((wrapper == NULL) || (*wrapper == '\0'))
+ return NULL;
+
+ /* Absolute path? */
+#if defined (HAVE_DOS_BASED_FILE_SYSTEM)
+ if (isalpha ((unsigned char) wrapper[0]) && wrapper[1] == ':')
+ {
+ concat_name = xstrdup (wrapper);
+ if (check_executable (concat_name))
+ return concat_name;
+ XFREE (concat_name);
+ }
+ else
+ {
+#endif
+ if (IS_DIR_SEPARATOR (wrapper[0]))
+ {
+ concat_name = xstrdup (wrapper);
+ if (check_executable (concat_name))
+ return concat_name;
+ XFREE (concat_name);
+ }
+#if defined (HAVE_DOS_BASED_FILE_SYSTEM)
+ }
+#endif
+
+ for (p = wrapper; *p; p++)
+ if (*p == '/')
+ {
+ has_slash = 1;
+ break;
+ }
+ if (!has_slash)
+ {
+ /* no slashes; search PATH */
+ const char *path = getenv ("PATH");
+ if (path != NULL)
+ {
+ for (p = path; *p; p = p_next)
+ {
+ const char *q;
+ size_t p_len;
+ for (q = p; *q; q++)
+ if (IS_PATH_SEPARATOR (*q))
+ break;
+ p_len = q - p;
+ p_next = (*q == '\0' ? q : q + 1);
+ if (p_len == 0)
+ {
+ /* empty path: current directory */
+ if (getcwd (tmp, LT_PATHMAX) == NULL)
+ lt_fatal ("getcwd failed");
+ tmp_len = strlen (tmp);
+ concat_name =
+ XMALLOC (char, tmp_len + 1 + strlen (wrapper) + 1);
+ memcpy (concat_name, tmp, tmp_len);
+ concat_name[tmp_len] = '/';
+ strcpy (concat_name + tmp_len + 1, wrapper);
+ }
+ else
+ {
+ concat_name =
+ XMALLOC (char, p_len + 1 + strlen (wrapper) + 1);
+ memcpy (concat_name, p, p_len);
+ concat_name[p_len] = '/';
+ strcpy (concat_name + p_len + 1, wrapper);
+ }
+ if (check_executable (concat_name))
+ return concat_name;
+ XFREE (concat_name);
+ }
+ }
+ /* not found in PATH; assume curdir */
+ }
+ /* Relative path | not found in path: prepend cwd */
+ if (getcwd (tmp, LT_PATHMAX) == NULL)
+ lt_fatal ("getcwd failed");
+ tmp_len = strlen (tmp);
+ concat_name = XMALLOC (char, tmp_len + 1 + strlen (wrapper) + 1);
+ memcpy (concat_name, tmp, tmp_len);
+ concat_name[tmp_len] = '/';
+ strcpy (concat_name + tmp_len + 1, wrapper);
+
+ if (check_executable (concat_name))
+ return concat_name;
+ XFREE (concat_name);
+ return NULL;
+}
+
+char *
+chase_symlinks (const char *pathspec)
+{
+#ifndef S_ISLNK
+ return xstrdup (pathspec);
+#else
+ char buf[LT_PATHMAX];
+ struct stat s;
+ char *tmp_pathspec = xstrdup (pathspec);
+ char *p;
+ int has_symlinks = 0;
+ while (strlen (tmp_pathspec) && !has_symlinks)
+ {
+ LTWRAPPER_DEBUGPRINTF (("checking path component for symlinks: %s\n",
+ tmp_pathspec));
+ if (lstat (tmp_pathspec, &s) == 0)
+ {
+ if (S_ISLNK (s.st_mode) != 0)
+ {
+ has_symlinks = 1;
+ break;
+ }
+
+ /* search backwards for last DIR_SEPARATOR */
+ p = tmp_pathspec + strlen (tmp_pathspec) - 1;
+ while ((p > tmp_pathspec) && (!IS_DIR_SEPARATOR (*p)))
+ p--;
+ if ((p == tmp_pathspec) && (!IS_DIR_SEPARATOR (*p)))
+ {
+ /* no more DIR_SEPARATORS left */
+ break;
+ }
+ *p = '\0';
+ }
+ else
+ {
+ char *errstr = strerror (errno);
+ lt_fatal ("Error accessing file %s (%s)", tmp_pathspec, errstr);
+ }
+ }
+ XFREE (tmp_pathspec);
+
+ if (!has_symlinks)
+ {
+ return xstrdup (pathspec);
+ }
+
+ tmp_pathspec = realpath (pathspec, buf);
+ if (tmp_pathspec == 0)
+ {
+ lt_fatal ("Could not follow symlinks for %s", pathspec);
+ }
+ return xstrdup (tmp_pathspec);
+#endif
+}
+
+char *
+strendzap (char *str, const char *pat)
+{
+ size_t len, patlen;
+
+ assert (str != NULL);
+ assert (pat != NULL);
+
+ len = strlen (str);
+ patlen = strlen (pat);
+
+ if (patlen <= len)
+ {
+ str += len - patlen;
+ if (strcmp (str, pat) == 0)
+ *str = '\0';
+ }
+ return str;
+}
+
+static void
+lt_error_core (int exit_status, const char *mode,
+ const char *message, va_list ap)
+{
+ fprintf (stderr, "%s: %s: ", program_name, mode);
+ vfprintf (stderr, message, ap);
+ fprintf (stderr, ".\n");
+
+ if (exit_status >= 0)
+ exit (exit_status);
+}
+
+void
+lt_fatal (const char *message, ...)
+{
+ va_list ap;
+ va_start (ap, message);
+ lt_error_core (EXIT_FAILURE, "FATAL", message, ap);
+ va_end (ap);
+}
+
+void
+lt_setenv (const char *name, const char *value)
+{
+ LTWRAPPER_DEBUGPRINTF (("(lt_setenv) setting '%s' to '%s'\n",
+ (name ? name : "<NULL>"),
+ (value ? value : "<NULL>")));
+ {
+#ifdef HAVE_SETENV
+ /* always make a copy, for consistency with !HAVE_SETENV */
+ char *str = xstrdup (value);
+ setenv (name, str, 1);
+#else
+ int len = strlen (name) + 1 + strlen (value) + 1;
+ char *str = XMALLOC (char, len);
+ sprintf (str, "%s=%s", name, value);
+ if (putenv (str) != EXIT_SUCCESS)
+ {
+ XFREE (str);
+ }
+#endif
+ }
+}
+
+char *
+lt_extend_str (const char *orig_value, const char *add, int to_end)
+{
+ char *new_value;
+ if (orig_value && *orig_value)
+ {
+ int orig_value_len = strlen (orig_value);
+ int add_len = strlen (add);
+ new_value = XMALLOC (char, add_len + orig_value_len + 1);
+ if (to_end)
+ {
+ strcpy (new_value, orig_value);
+ strcpy (new_value + orig_value_len, add);
+ }
+ else
+ {
+ strcpy (new_value, add);
+ strcpy (new_value + add_len, orig_value);
+ }
+ }
+ else
+ {
+ new_value = xstrdup (add);
+ }
+ return new_value;
+}
+
+int
+lt_split_name_value (const char *arg, char** name, char** value)
+{
+ const char *p;
+ int len;
+ if (!arg || !*arg)
+ return 1;
+
+ p = strchr (arg, (int)'=');
+
+ if (!p)
+ return 1;
+
+ *value = xstrdup (++p);
+
+ len = strlen (arg) - strlen (*value);
+ *name = XMALLOC (char, len);
+ strncpy (*name, arg, len-1);
+ (*name)[len - 1] = '\0';
+
+ return 0;
+}
+
+void
+lt_opt_process_env_set (const char *arg)
+{
+ char *name = NULL;
+ char *value = NULL;
+
+ if (lt_split_name_value (arg, &name, &value) != 0)
+ {
+ XFREE (name);
+ XFREE (value);
+ lt_fatal ("bad argument for %s: '%s'", env_set_opt, arg);
+ }
+
+ lt_setenv (name, value);
+ XFREE (name);
+ XFREE (value);
+}
+
+void
+lt_opt_process_env_prepend (const char *arg)
+{
+ char *name = NULL;
+ char *value = NULL;
+ char *new_value = NULL;
+
+ if (lt_split_name_value (arg, &name, &value) != 0)
+ {
+ XFREE (name);
+ XFREE (value);
+ lt_fatal ("bad argument for %s: '%s'", env_prepend_opt, arg);
+ }
+
+ new_value = lt_extend_str (getenv (name), value, 0);
+ lt_setenv (name, new_value);
+ XFREE (new_value);
+ XFREE (name);
+ XFREE (value);
+}
+
+void
+lt_opt_process_env_append (const char *arg)
+{
+ char *name = NULL;
+ char *value = NULL;
+ char *new_value = NULL;
+
+ if (lt_split_name_value (arg, &name, &value) != 0)
+ {
+ XFREE (name);
+ XFREE (value);
+ lt_fatal ("bad argument for %s: '%s'", env_append_opt, arg);
+ }
+
+ new_value = lt_extend_str (getenv (name), value, 1);
+ lt_setenv (name, new_value);
+ XFREE (new_value);
+ XFREE (name);
+ XFREE (value);
+}
+
+void
+lt_update_exe_path (const char *name, const char *value)
+{
+ LTWRAPPER_DEBUGPRINTF (("(lt_update_exe_path) modifying '%s' by prepending '%s'\n",
+ (name ? name : "<NULL>"),
+ (value ? value : "<NULL>")));
+
+ if (name && *name && value && *value)
+ {
+ char *new_value = lt_extend_str (getenv (name), value, 0);
+ /* some systems can't cope with a ':'-terminated path #' */
+ int len = strlen (new_value);
+ while (((len = strlen (new_value)) > 0) && IS_PATH_SEPARATOR (new_value[len-1]))
+ {
+ new_value[len-1] = '\0';
+ }
+ lt_setenv (name, new_value);
+ XFREE (new_value);
+ }
+}
+
+void
+lt_update_lib_path (const char *name, const char *value)
+{
+ LTWRAPPER_DEBUGPRINTF (("(lt_update_lib_path) modifying '%s' by prepending '%s'\n",
+ (name ? name : "<NULL>"),
+ (value ? value : "<NULL>")));
+
+ if (name && *name && value && *value)
+ {
+ char *new_value = lt_extend_str (getenv (name), value, 0);
+ lt_setenv (name, new_value);
+ XFREE (new_value);
+ }
+}
+
+
+EOF
+}
+# end: func_emit_cwrapperexe_src
+
+# func_mode_link arg...
+func_mode_link ()
+{
+ $opt_debug
+ case $host in
+ *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-os2* | *-cegcc*)
+ # It is impossible to link a dll without this setting, and
+ # we shouldn't force the makefile maintainer to figure out
+ # which system we are compiling for in order to pass an extra
+ # flag for every libtool invocation.
+ # allow_undefined=no
+
+ # FIXME: Unfortunately, there are problems with the above when trying
+ # to make a dll which has undefined symbols, in which case not
+ # even a static library is built. For now, we need to specify
+ # -no-undefined on the libtool link line when we can be certain
+ # that all symbols are satisfied, otherwise we get a static library.
+ allow_undefined=yes
+ ;;
+ *)
+ allow_undefined=yes
+ ;;
+ esac
+ libtool_args=$nonopt
+ base_compile="$nonopt $@"
+ compile_command=$nonopt
+ finalize_command=$nonopt
+
+ compile_rpath=
+ finalize_rpath=
+ compile_shlibpath=
+ finalize_shlibpath=
+ convenience=
+ old_convenience=
+ deplibs=
+ old_deplibs=
+ compiler_flags=
+ linker_flags=
+ dllsearchpath=
+ lib_search_path=`pwd`
+ inst_prefix_dir=
+ new_inherited_linker_flags=
+
+ avoid_version=no
+ dlfiles=
+ dlprefiles=
+ dlself=no
+ export_dynamic=no
+ export_symbols=
+ export_symbols_regex=
+ generated=
+ libobjs=
+ ltlibs=
+ module=no
+ no_install=no
+ objs=
+ non_pic_objects=
+ precious_files_regex=
+ prefer_static_libs=no
+ preload=no
+ prev=
+ prevarg=
+ release=
+ rpath=
+ xrpath=
+ perm_rpath=
+ temp_rpath=
+ thread_safe=no
+ vinfo=
+ vinfo_number=no
+ weak_libs=
+ single_module="${wl}-single_module"
+ func_infer_tag $base_compile
+
+ # We need to know -static, to get the right output filenames.
+ for arg
+ do
+ case $arg in
+ -shared)
+ test "$build_libtool_libs" != yes && \
+ func_fatal_configuration "can not build a shared library"
+ build_old_libs=no
+ break
+ ;;
+ -all-static | -static | -static-libtool-libs)
+ case $arg in
+ -all-static)
+ if test "$build_libtool_libs" = yes && test -z "$link_static_flag"; then
+ func_warning "complete static linking is impossible in this configuration"
+ fi
+ if test -n "$link_static_flag"; then
+ dlopen_self=$dlopen_self_static
+ fi
+ prefer_static_libs=yes
+ ;;
+ -static)
+ if test -z "$pic_flag" && test -n "$link_static_flag"; then
+ dlopen_self=$dlopen_self_static
+ fi
+ prefer_static_libs=built
+ ;;
+ -static-libtool-libs)
+ if test -z "$pic_flag" && test -n "$link_static_flag"; then
+ dlopen_self=$dlopen_self_static
+ fi
+ prefer_static_libs=yes
+ ;;
+ esac
+ build_libtool_libs=no
+ build_old_libs=yes
+ break
+ ;;
+ esac
+ done
+
+ # See if our shared archives depend on static archives.
+ test -n "$old_archive_from_new_cmds" && build_old_libs=yes
+
+ # Go through the arguments, transforming them on the way.
+ while test "$#" -gt 0; do
+ arg="$1"
+ shift
+ func_quote_for_eval "$arg"
+ qarg=$func_quote_for_eval_unquoted_result
+ func_append libtool_args " $func_quote_for_eval_result"
+
+ # If the previous option needs an argument, assign it.
+ if test -n "$prev"; then
+ case $prev in
+ output)
+ func_append compile_command " @OUTPUT@"
+ func_append finalize_command " @OUTPUT@"
+ ;;
+ esac
+
+ case $prev in
+ dlfiles|dlprefiles)
+ if test "$preload" = no; then
+ # Add the symbol object into the linking commands.
+ func_append compile_command " @SYMFILE@"
+ func_append finalize_command " @SYMFILE@"
+ preload=yes
+ fi
+ case $arg in
+ *.la | *.lo) ;; # We handle these cases below.
+ force)
+ if test "$dlself" = no; then
+ dlself=needless
+ export_dynamic=yes
+ fi
+ prev=
+ continue
+ ;;
+ self)
+ if test "$prev" = dlprefiles; then
+ dlself=yes
+ elif test "$prev" = dlfiles && test "$dlopen_self" != yes; then
+ dlself=yes
+ else
+ dlself=needless
+ export_dynamic=yes
+ fi
+ prev=
+ continue
+ ;;
+ *)
+ if test "$prev" = dlfiles; then
+ dlfiles="$dlfiles $arg"
+ else
+ dlprefiles="$dlprefiles $arg"
+ fi
+ prev=
+ continue
+ ;;
+ esac
+ ;;
+ expsyms)
+ export_symbols="$arg"
+ test -f "$arg" \
+ || func_fatal_error "symbol file \`$arg' does not exist"
+ prev=
+ continue
+ ;;
+ expsyms_regex)
+ export_symbols_regex="$arg"
+ prev=
+ continue
+ ;;
+ framework)
+ case $host in
+ *-*-darwin*)
+ case "$deplibs " in
+ *" $qarg.ltframework "*) ;;
+ *) deplibs="$deplibs $qarg.ltframework" # this is fixed later
+ ;;
+ esac
+ ;;
+ esac
+ prev=
+ continue
+ ;;
+ inst_prefix)
+ inst_prefix_dir="$arg"
+ prev=
+ continue
+ ;;
+ objectlist)
+ if test -f "$arg"; then
+ save_arg=$arg
+ moreargs=
+ for fil in `cat "$save_arg"`
+ do
+# moreargs="$moreargs $fil"
+ arg=$fil
+ # A libtool-controlled object.
+
+ # Check to see that this really is a libtool object.
+ if func_lalib_unsafe_p "$arg"; then
+ pic_object=
+ non_pic_object=
+
+ # Read the .lo file
+ func_source "$arg"
+
+ if test -z "$pic_object" ||
+ test -z "$non_pic_object" ||
+ test "$pic_object" = none &&
+ test "$non_pic_object" = none; then
+ func_fatal_error "cannot find name of object for \`$arg'"
+ fi
+
+ # Extract subdirectory from the argument.
+ func_dirname "$arg" "/" ""
+ xdir="$func_dirname_result"
+
+ if test "$pic_object" != none; then
+ # Prepend the subdirectory the object is found in.
+ pic_object="$xdir$pic_object"
+
+ if test "$prev" = dlfiles; then
+ if test "$build_libtool_libs" = yes && test "$dlopen_support" = yes; then
+ dlfiles="$dlfiles $pic_object"
+ prev=
+ continue
+ else
+ # If libtool objects are unsupported, then we need to preload.
+ prev=dlprefiles
+ fi
+ fi
+
+ # CHECK ME: I think I busted this. -Ossama
+ if test "$prev" = dlprefiles; then
+ # Preload the old-style object.
+ dlprefiles="$dlprefiles $pic_object"
+ prev=
+ fi
+
+ # A PIC object.
+ func_append libobjs " $pic_object"
+ arg="$pic_object"
+ fi
+
+ # Non-PIC object.
+ if test "$non_pic_object" != none; then
+ # Prepend the subdirectory the object is found in.
+ non_pic_object="$xdir$non_pic_object"
+
+ # A standard non-PIC object
+ func_append non_pic_objects " $non_pic_object"
+ if test -z "$pic_object" || test "$pic_object" = none ; then
+ arg="$non_pic_object"
+ fi
+ else
+ # If the PIC object exists, use it instead.
+ # $xdir was prepended to $pic_object above.
+ non_pic_object="$pic_object"
+ func_append non_pic_objects " $non_pic_object"
+ fi
+ else
+ # Only an error if not doing a dry-run.
+ if $opt_dry_run; then
+ # Extract subdirectory from the argument.
+ func_dirname "$arg" "/" ""
+ xdir="$func_dirname_result"
+
+ func_lo2o "$arg"
+ pic_object=$xdir$objdir/$func_lo2o_result
+ non_pic_object=$xdir$func_lo2o_result
+ func_append libobjs " $pic_object"
+ func_append non_pic_objects " $non_pic_object"
+ else
+ func_fatal_error "\`$arg' is not a valid libtool object"
+ fi
+ fi
+ done
+ else
+ func_fatal_error "link input file \`$arg' does not exist"
+ fi
+ arg=$save_arg
+ prev=
+ continue
+ ;;
+ precious_regex)
+ precious_files_regex="$arg"
+ prev=
+ continue
+ ;;
+ release)
+ release="-$arg"
+ prev=
+ continue
+ ;;
+ rpath | xrpath)
+ # We need an absolute path.
+ case $arg in
+ [\\/]* | [A-Za-z]:[\\/]*) ;;
+ *)
+ func_fatal_error "only absolute run-paths are allowed"
+ ;;
+ esac
+ if test "$prev" = rpath; then
+ case "$rpath " in
+ *" $arg "*) ;;
+ *) rpath="$rpath $arg" ;;
+ esac
+ else
+ case "$xrpath " in
+ *" $arg "*) ;;
+ *) xrpath="$xrpath $arg" ;;
+ esac
+ fi
+ prev=
+ continue
+ ;;
+ shrext)
+ shrext_cmds="$arg"
+ prev=
+ continue
+ ;;
+ weak)
+ weak_libs="$weak_libs $arg"
+ prev=
+ continue
+ ;;
+ xcclinker)
+ linker_flags="$linker_flags $qarg"
+ compiler_flags="$compiler_flags $qarg"
+ prev=
+ func_append compile_command " $qarg"
+ func_append finalize_command " $qarg"
+ continue
+ ;;
+ xcompiler)
+ compiler_flags="$compiler_flags $qarg"
+ prev=
+ func_append compile_command " $qarg"
+ func_append finalize_command " $qarg"
+ continue
+ ;;
+ xlinker)
+ linker_flags="$linker_flags $qarg"
+ compiler_flags="$compiler_flags $wl$qarg"
+ prev=
+ func_append compile_command " $wl$qarg"
+ func_append finalize_command " $wl$qarg"
+ continue
+ ;;
+ *)
+ eval "$prev=\"\$arg\""
+ prev=
+ continue
+ ;;
+ esac
+ fi # test -n "$prev"
+
+ prevarg="$arg"
+
+ case $arg in
+ -all-static)
+ if test -n "$link_static_flag"; then
+ # See comment for -static flag below, for more details.
+ func_append compile_command " $link_static_flag"
+ func_append finalize_command " $link_static_flag"
+ fi
+ continue
+ ;;
+
+ -allow-undefined)
+ # FIXME: remove this flag sometime in the future.
+ func_fatal_error "\`-allow-undefined' must not be used because it is the default"
+ ;;
+
+ -avoid-version)
+ avoid_version=yes
+ continue
+ ;;
+
+ -dlopen)
+ prev=dlfiles
+ continue
+ ;;
+
+ -dlpreopen)
+ prev=dlprefiles
+ continue
+ ;;
+
+ -export-dynamic)
+ export_dynamic=yes
+ continue
+ ;;
+
+ -export-symbols | -export-symbols-regex)
+ if test -n "$export_symbols" || test -n "$export_symbols_regex"; then
+ func_fatal_error "more than one -exported-symbols argument is not allowed"
+ fi
+ if test "X$arg" = "X-export-symbols"; then
+ prev=expsyms
+ else
+ prev=expsyms_regex
+ fi
+ continue
+ ;;
+
+ -framework)
+ prev=framework
+ continue
+ ;;
+
+ -inst-prefix-dir)
+ prev=inst_prefix
+ continue
+ ;;
+
+ # The native IRIX linker understands -LANG:*, -LIST:* and -LNO:*
+ # so, if we see these flags be careful not to treat them like -L
+ -L[A-Z][A-Z]*:*)
+ case $with_gcc/$host in
+ no/*-*-irix* | /*-*-irix*)
+ func_append compile_command " $arg"
+ func_append finalize_command " $arg"
+ ;;
+ esac
+ continue
+ ;;
+
+ -L*)
+ func_stripname '-L' '' "$arg"
+ dir=$func_stripname_result
+ if test -z "$dir"; then
+ if test "$#" -gt 0; then
+ func_fatal_error "require no space between \`-L' and \`$1'"
+ else
+ func_fatal_error "need path for \`-L' option"
+ fi
+ fi
+ # We need an absolute path.
+ case $dir in
+ [\\/]* | [A-Za-z]:[\\/]*) ;;
+ *)
+ absdir=`cd "$dir" && pwd`
+ test -z "$absdir" && \
+ func_fatal_error "cannot determine absolute directory name of \`$dir'"
+ dir="$absdir"
+ ;;
+ esac
+ case "$deplibs " in
+ *" -L$dir "*) ;;
+ *)
+ deplibs="$deplibs -L$dir"
+ lib_search_path="$lib_search_path $dir"
+ ;;
+ esac
+ case $host in
+ *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-os2* | *-cegcc*)
+ testbindir=`$ECHO "X$dir" | $Xsed -e 's*/lib$*/bin*'`
+ case :$dllsearchpath: in
+ *":$dir:"*) ;;
+ ::) dllsearchpath=$dir;;
+ *) dllsearchpath="$dllsearchpath:$dir";;
+ esac
+ case :$dllsearchpath: in
+ *":$testbindir:"*) ;;
+ ::) dllsearchpath=$testbindir;;
+ *) dllsearchpath="$dllsearchpath:$testbindir";;
+ esac
+ ;;
+ esac
+ continue
+ ;;
+
+ -l*)
+ if test "X$arg" = "X-lc" || test "X$arg" = "X-lm"; then
+ case $host in
+ *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-beos* | *-cegcc*)
+ # These systems don't actually have a C or math library (as such)
+ continue
+ ;;
+ *-*-os2*)
+ # These systems don't actually have a C library (as such)
+ test "X$arg" = "X-lc" && continue
+ ;;
+ *-*-openbsd* | *-*-freebsd* | *-*-dragonfly*)
+ # Do not include libc due to us having libc/libc_r.
+ test "X$arg" = "X-lc" && continue
+ ;;
+ *-*-rhapsody* | *-*-darwin1.[012])
+ # Rhapsody C and math libraries are in the System framework
+ deplibs="$deplibs System.ltframework"
+ continue
+ ;;
+ *-*-sco3.2v5* | *-*-sco5v6*)
+ # Causes problems with __ctype
+ test "X$arg" = "X-lc" && continue
+ ;;
+ *-*-sysv4.2uw2* | *-*-sysv5* | *-*-unixware* | *-*-OpenUNIX*)
+ # Compiler inserts libc in the correct place for threads to work
+ test "X$arg" = "X-lc" && continue
+ ;;
+ esac
+ elif test "X$arg" = "X-lc_r"; then
+ case $host in
+ *-*-openbsd* | *-*-freebsd* | *-*-dragonfly*)
+ # Do not include libc_r directly, use -pthread flag.
+ continue
+ ;;
+ esac
+ fi
+ deplibs="$deplibs $arg"
+ continue
+ ;;
+
+ -module)
+ module=yes
+ continue
+ ;;
+
+ # Tru64 UNIX uses -model [arg] to determine the layout of C++
+ # classes, name mangling, and exception handling.
+ # Darwin uses the -arch flag to determine output architecture.
+ -model|-arch|-isysroot)
+ compiler_flags="$compiler_flags $arg"
+ func_append compile_command " $arg"
+ func_append finalize_command " $arg"
+ prev=xcompiler
+ continue
+ ;;
+
+ -mt|-mthreads|-kthread|-Kthread|-pthread|-pthreads|--thread-safe|-threads)
+ compiler_flags="$compiler_flags $arg"
+ func_append compile_command " $arg"
+ func_append finalize_command " $arg"
+ case "$new_inherited_linker_flags " in
+ *" $arg "*) ;;
+ * ) new_inherited_linker_flags="$new_inherited_linker_flags $arg" ;;
+ esac
+ continue
+ ;;
+
+ -multi_module)
+ single_module="${wl}-multi_module"
+ continue
+ ;;
+
+ -no-fast-install)
+ fast_install=no
+ continue
+ ;;
+
+ -no-install)
+ case $host in
+ *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-os2* | *-*-darwin* | *-cegcc*)
+ # The PATH hackery in wrapper scripts is required on Windows
+ # and Darwin in order for the loader to find any dlls it needs.
+ func_warning "\`-no-install' is ignored for $host"
+ func_warning "assuming \`-no-fast-install' instead"
+ fast_install=no
+ ;;
+ *) no_install=yes ;;
+ esac
+ continue
+ ;;
+
+ -no-undefined)
+ allow_undefined=no
+ continue
+ ;;
+
+ -objectlist)
+ prev=objectlist
+ continue
+ ;;
+
+ -o) prev=output ;;
+
+ -precious-files-regex)
+ prev=precious_regex
+ continue
+ ;;
+
+ -release)
+ prev=release
+ continue
+ ;;
+
+ -rpath)
+ prev=rpath
+ continue
+ ;;
+
+ -R)
+ prev=xrpath
+ continue
+ ;;
+
+ -R*)
+ func_stripname '-R' '' "$arg"
+ dir=$func_stripname_result
+ # We need an absolute path.
+ case $dir in
+ [\\/]* | [A-Za-z]:[\\/]*) ;;
+ *)
+ func_fatal_error "only absolute run-paths are allowed"
+ ;;
+ esac
+ case "$xrpath " in
+ *" $dir "*) ;;
+ *) xrpath="$xrpath $dir" ;;
+ esac
+ continue
+ ;;
+
+ -shared)
+ # The effects of -shared are defined in a previous loop.
+ continue
+ ;;
+
+ -shrext)
+ prev=shrext
+ continue
+ ;;
+
+ -static | -static-libtool-libs)
+ # The effects of -static are defined in a previous loop.
+ # We used to do the same as -all-static on platforms that
+ # didn't have a PIC flag, but the assumption that the effects
+ # would be equivalent was wrong. It would break on at least
+ # Digital Unix and AIX.
+ continue
+ ;;
+
+ -thread-safe)
+ thread_safe=yes
+ continue
+ ;;
+
+ -version-info)
+ prev=vinfo
+ continue
+ ;;
+
+ -version-number)
+ prev=vinfo
+ vinfo_number=yes
+ continue
+ ;;
+
+ -weak)
+ prev=weak
+ continue
+ ;;
+
+ -Wc,*)
+ func_stripname '-Wc,' '' "$arg"
+ args=$func_stripname_result
+ arg=
+ save_ifs="$IFS"; IFS=','
+ for flag in $args; do
+ IFS="$save_ifs"
+ func_quote_for_eval "$flag"
+ arg="$arg $wl$func_quote_for_eval_result"
+ compiler_flags="$compiler_flags $func_quote_for_eval_result"
+ done
+ IFS="$save_ifs"
+ func_stripname ' ' '' "$arg"
+ arg=$func_stripname_result
+ ;;
+
+ -Wl,*)
+ func_stripname '-Wl,' '' "$arg"
+ args=$func_stripname_result
+ arg=
+ save_ifs="$IFS"; IFS=','
+ for flag in $args; do
+ IFS="$save_ifs"
+ func_quote_for_eval "$flag"
+ arg="$arg $wl$func_quote_for_eval_result"
+ compiler_flags="$compiler_flags $wl$func_quote_for_eval_result"
+ linker_flags="$linker_flags $func_quote_for_eval_result"
+ done
+ IFS="$save_ifs"
+ func_stripname ' ' '' "$arg"
+ arg=$func_stripname_result
+ ;;
+
+ -Xcompiler)
+ prev=xcompiler
+ continue
+ ;;
+
+ -Xlinker)
+ prev=xlinker
+ continue
+ ;;
+
+ -XCClinker)
+ prev=xcclinker
+ continue
+ ;;
+
+ # -msg_* for osf cc
+ -msg_*)
+ func_quote_for_eval "$arg"
+ arg="$func_quote_for_eval_result"
+ ;;
+
+ # -64, -mips[0-9] enable 64-bit mode on the SGI compiler
+ # -r[0-9][0-9]* specifies the processor on the SGI compiler
+ # -xarch=*, -xtarget=* enable 64-bit mode on the Sun compiler
+ # +DA*, +DD* enable 64-bit mode on the HP compiler
+ # -q* pass through compiler args for the IBM compiler
+ # -m*, -t[45]*, -txscale* pass through architecture-specific
+ # compiler args for GCC
+ # -F/path gives path to uninstalled frameworks, gcc on darwin
+ # -p, -pg, --coverage, -fprofile-* pass through profiling flag for GCC
+ # @file GCC response files
+ -64|-mips[0-9]|-r[0-9][0-9]*|-xarch=*|-xtarget=*|+DA*|+DD*|-q*|-m*| \
+ -t[45]*|-txscale*|-p|-pg|--coverage|-fprofile-*|-F*|@*)
+ func_quote_for_eval "$arg"
+ arg="$func_quote_for_eval_result"
+ func_append compile_command " $arg"
+ func_append finalize_command " $arg"
+ compiler_flags="$compiler_flags $arg"
+ continue
+ ;;
+
+ # Some other compiler flag.
+ -* | +*)
+ func_quote_for_eval "$arg"
+ arg="$func_quote_for_eval_result"
+ ;;
+
+ *.$objext)
+ # A standard object.
+ objs="$objs $arg"
+ ;;
+
+ *.lo)
+ # A libtool-controlled object.
+
+ # Check to see that this really is a libtool object.
+ if func_lalib_unsafe_p "$arg"; then
+ pic_object=
+ non_pic_object=
+
+ # Read the .lo file
+ func_source "$arg"
+
+ if test -z "$pic_object" ||
+ test -z "$non_pic_object" ||
+ test "$pic_object" = none &&
+ test "$non_pic_object" = none; then
+ func_fatal_error "cannot find name of object for \`$arg'"
+ fi
+
+ # Extract subdirectory from the argument.
+ func_dirname "$arg" "/" ""
+ xdir="$func_dirname_result"
+
+ if test "$pic_object" != none; then
+ # Prepend the subdirectory the object is found in.
+ pic_object="$xdir$pic_object"
+
+ if test "$prev" = dlfiles; then
+ if test "$build_libtool_libs" = yes && test "$dlopen_support" = yes; then
+ dlfiles="$dlfiles $pic_object"
+ prev=
+ continue
+ else
+ # If libtool objects are unsupported, then we need to preload.
+ prev=dlprefiles
+ fi
+ fi
+
+ # CHECK ME: I think I busted this. -Ossama
+ if test "$prev" = dlprefiles; then
+ # Preload the old-style object.
+ dlprefiles="$dlprefiles $pic_object"
+ prev=
+ fi
+
+ # A PIC object.
+ func_append libobjs " $pic_object"
+ arg="$pic_object"
+ fi
+
+ # Non-PIC object.
+ if test "$non_pic_object" != none; then
+ # Prepend the subdirectory the object is found in.
+ non_pic_object="$xdir$non_pic_object"
+
+ # A standard non-PIC object
+ func_append non_pic_objects " $non_pic_object"
+ if test -z "$pic_object" || test "$pic_object" = none ; then
+ arg="$non_pic_object"
+ fi
+ else
+ # If the PIC object exists, use it instead.
+ # $xdir was prepended to $pic_object above.
+ non_pic_object="$pic_object"
+ func_append non_pic_objects " $non_pic_object"
+ fi
+ else
+ # Only an error if not doing a dry-run.
+ if $opt_dry_run; then
+ # Extract subdirectory from the argument.
+ func_dirname "$arg" "/" ""
+ xdir="$func_dirname_result"
+
+ func_lo2o "$arg"
+ pic_object=$xdir$objdir/$func_lo2o_result
+ non_pic_object=$xdir$func_lo2o_result
+ func_append libobjs " $pic_object"
+ func_append non_pic_objects " $non_pic_object"
+ else
+ func_fatal_error "\`$arg' is not a valid libtool object"
+ fi
+ fi
+ ;;
+
+ *.$libext)
+ # An archive.
+ deplibs="$deplibs $arg"
+ old_deplibs="$old_deplibs $arg"
+ continue
+ ;;
+
+ *.la)
+ # A libtool-controlled library.
+
+ if test "$prev" = dlfiles; then
+ # This library was specified with -dlopen.
+ dlfiles="$dlfiles $arg"
+ prev=
+ elif test "$prev" = dlprefiles; then
+ # The library was specified with -dlpreopen.
+ dlprefiles="$dlprefiles $arg"
+ prev=
+ else
+ deplibs="$deplibs $arg"
+ fi
+ continue
+ ;;
+
+ # Some other compiler argument.
+ *)
+ # Unknown arguments in both finalize_command and compile_command need
+ # to be aesthetically quoted because they are evaled later.
+ func_quote_for_eval "$arg"
+ arg="$func_quote_for_eval_result"
+ ;;
+ esac # arg
+
+ # Now actually substitute the argument into the commands.
+ if test -n "$arg"; then
+ func_append compile_command " $arg"
+ func_append finalize_command " $arg"
+ fi
+ done # argument parsing loop
+
+ test -n "$prev" && \
+ func_fatal_help "the \`$prevarg' option requires an argument"
+
+ if test "$export_dynamic" = yes && test -n "$export_dynamic_flag_spec"; then
+ eval arg=\"$export_dynamic_flag_spec\"
+ func_append compile_command " $arg"
+ func_append finalize_command " $arg"
+ fi
+
+ oldlibs=
+ # calculate the name of the file, without its directory
+ func_basename "$output"
+ outputname="$func_basename_result"
+ libobjs_save="$libobjs"
+
+ if test -n "$shlibpath_var"; then
+ # get the directories listed in $shlibpath_var
+ eval shlib_search_path=\`\$ECHO \"X\${$shlibpath_var}\" \| \$Xsed -e \'s/:/ /g\'\`
+ else
+ shlib_search_path=
+ fi
+ eval sys_lib_search_path=\"$sys_lib_search_path_spec\"
+ eval sys_lib_dlsearch_path=\"$sys_lib_dlsearch_path_spec\"
+
+ func_dirname "$output" "/" ""
+ output_objdir="$func_dirname_result$objdir"
+ # Create the object directory.
+ func_mkdir_p "$output_objdir"
+
+ # Determine the type of output
+ case $output in
+ "")
+ func_fatal_help "you must specify an output file"
+ ;;
+ *.$libext) linkmode=oldlib ;;
+ *.lo | *.$objext) linkmode=obj ;;
+ *.la) linkmode=lib ;;
+ *) linkmode=prog ;; # Anything else should be a program.
+ esac
+
+ specialdeplibs=
+
+ libs=
+ # Find all interdependent deplibs by searching for libraries
+ # that are linked more than once (e.g. -la -lb -la)
+ for deplib in $deplibs; do
+ if $opt_duplicate_deps ; then
+ case "$libs " in
+ *" $deplib "*) specialdeplibs="$specialdeplibs $deplib" ;;
+ esac
+ fi
+ libs="$libs $deplib"
+ done
+
+ if test "$linkmode" = lib; then
+ libs="$predeps $libs $compiler_lib_search_path $postdeps"
+
+ # Compute libraries that are listed more than once in $predeps
+ # $postdeps and mark them as special (i.e., whose duplicates are
+ # not to be eliminated).
+ pre_post_deps=
+ if $opt_duplicate_compiler_generated_deps; then
+ for pre_post_dep in $predeps $postdeps; do
+ case "$pre_post_deps " in
+ *" $pre_post_dep "*) specialdeplibs="$specialdeplibs $pre_post_deps" ;;
+ esac
+ pre_post_deps="$pre_post_deps $pre_post_dep"
+ done
+ fi
+ pre_post_deps=
+ fi
+
+ deplibs=
+ newdependency_libs=
+ newlib_search_path=
+ need_relink=no # whether we're linking any uninstalled libtool libraries
+ notinst_deplibs= # not-installed libtool libraries
+ notinst_path= # paths that contain not-installed libtool libraries
+
+ case $linkmode in
+ lib)
+ passes="conv dlpreopen link"
+ for file in $dlfiles $dlprefiles; do
+ case $file in
+ *.la) ;;
+ *)
+ func_fatal_help "libraries can \`-dlopen' only libtool libraries: $file"
+ ;;
+ esac
+ done
+ ;;
+ prog)
+ compile_deplibs=
+ finalize_deplibs=
+ alldeplibs=no
+ newdlfiles=
+ newdlprefiles=
+ passes="conv scan dlopen dlpreopen link"
+ ;;
+ *) passes="conv"
+ ;;
+ esac
+
+ for pass in $passes; do
+ # The preopen pass in lib mode reverses $deplibs; put it back here
+ # so that -L comes before libs that need it for instance...
+ if test "$linkmode,$pass" = "lib,link"; then
+ ## FIXME: Find the place where the list is rebuilt in the wrong
+ ## order, and fix it there properly
+ tmp_deplibs=
+ for deplib in $deplibs; do
+ tmp_deplibs="$deplib $tmp_deplibs"
+ done
+ deplibs="$tmp_deplibs"
+ fi
+
+ if test "$linkmode,$pass" = "lib,link" ||
+ test "$linkmode,$pass" = "prog,scan"; then
+ libs="$deplibs"
+ deplibs=
+ fi
+ if test "$linkmode" = prog; then
+ case $pass in
+ dlopen) libs="$dlfiles" ;;
+ dlpreopen) libs="$dlprefiles" ;;
+ link) libs="$deplibs %DEPLIBS% $dependency_libs" ;;
+ esac
+ fi
+ if test "$linkmode,$pass" = "lib,dlpreopen"; then
+ # Collect and forward deplibs of preopened libtool libs
+ for lib in $dlprefiles; do
+ # Ignore non-libtool-libs
+ dependency_libs=
+ case $lib in
+ *.la) func_source "$lib" ;;
+ esac
+
+ # Collect preopened libtool deplibs, except any this library
+ # has declared as weak libs
+ for deplib in $dependency_libs; do
+ deplib_base=`$ECHO "X$deplib" | $Xsed -e "$basename"`
+ case " $weak_libs " in
+ *" $deplib_base "*) ;;
+ *) deplibs="$deplibs $deplib" ;;
+ esac
+ done
+ done
+ libs="$dlprefiles"
+ fi
+ if test "$pass" = dlopen; then
+ # Collect dlpreopened libraries
+ save_deplibs="$deplibs"
+ deplibs=
+ fi
+
+ for deplib in $libs; do
+ lib=
+ found=no
+ case $deplib in
+ -mt|-mthreads|-kthread|-Kthread|-pthread|-pthreads|--thread-safe|-threads)
+ if test "$linkmode,$pass" = "prog,link"; then
+ compile_deplibs="$deplib $compile_deplibs"
+ finalize_deplibs="$deplib $finalize_deplibs"
+ else
+ compiler_flags="$compiler_flags $deplib"
+ if test "$linkmode" = lib ; then
+ case "$new_inherited_linker_flags " in
+ *" $deplib "*) ;;
+ * ) new_inherited_linker_flags="$new_inherited_linker_flags $deplib" ;;
+ esac
+ fi
+ fi
+ continue
+ ;;
+ -l*)
+ if test "$linkmode" != lib && test "$linkmode" != prog; then
+ func_warning "\`-l' is ignored for archives/objects"
+ continue
+ fi
+ func_stripname '-l' '' "$deplib"
+ name=$func_stripname_result
+ if test "$linkmode" = lib; then
+ searchdirs="$newlib_search_path $lib_search_path $compiler_lib_search_dirs $sys_lib_search_path $shlib_search_path"
+ else
+ searchdirs="$newlib_search_path $lib_search_path $sys_lib_search_path $shlib_search_path"
+ fi
+ for searchdir in $searchdirs; do
+ for search_ext in .la $std_shrext .so .a; do
+ # Search the libtool library
+ lib="$searchdir/lib${name}${search_ext}"
+ if test -f "$lib"; then
+ if test "$search_ext" = ".la"; then
+ found=yes
+ else
+ found=no
+ fi
+ break 2
+ fi
+ done
+ done
+ if test "$found" != yes; then
+ # deplib doesn't seem to be a libtool library
+ if test "$linkmode,$pass" = "prog,link"; then
+ compile_deplibs="$deplib $compile_deplibs"
+ finalize_deplibs="$deplib $finalize_deplibs"
+ else
+ deplibs="$deplib $deplibs"
+ test "$linkmode" = lib && newdependency_libs="$deplib $newdependency_libs"
+ fi
+ continue
+ else # deplib is a libtool library
+ # If $allow_libtool_libs_with_static_runtimes && $deplib is a stdlib,
+ # We need to do some special things here, and not later.
+ if test "X$allow_libtool_libs_with_static_runtimes" = "Xyes" ; then
+ case " $predeps $postdeps " in
+ *" $deplib "*)
+ if func_lalib_p "$lib"; then
+ library_names=
+ old_library=
+ func_source "$lib"
+ for l in $old_library $library_names; do
+ ll="$l"
+ done
+ if test "X$ll" = "X$old_library" ; then # only static version available
+ found=no
+ func_dirname "$lib" "" "."
+ ladir="$func_dirname_result"
+ lib=$ladir/$old_library
+ if test "$linkmode,$pass" = "prog,link"; then
+ compile_deplibs="$deplib $compile_deplibs"
+ finalize_deplibs="$deplib $finalize_deplibs"
+ else
+ deplibs="$deplib $deplibs"
+ test "$linkmode" = lib && newdependency_libs="$deplib $newdependency_libs"
+ fi
+ continue
+ fi
+ fi
+ ;;
+ *) ;;
+ esac
+ fi
+ fi
+ ;; # -l
+ *.ltframework)
+ if test "$linkmode,$pass" = "prog,link"; then
+ compile_deplibs="$deplib $compile_deplibs"
+ finalize_deplibs="$deplib $finalize_deplibs"
+ else
+ deplibs="$deplib $deplibs"
+ if test "$linkmode" = lib ; then
+ case "$new_inherited_linker_flags " in
+ *" $deplib "*) ;;
+ * ) new_inherited_linker_flags="$new_inherited_linker_flags $deplib" ;;
+ esac
+ fi
+ fi
+ continue
+ ;;
+ -L*)
+ case $linkmode in
+ lib)
+ deplibs="$deplib $deplibs"
+ test "$pass" = conv && continue
+ newdependency_libs="$deplib $newdependency_libs"
+ func_stripname '-L' '' "$deplib"
+ newlib_search_path="$newlib_search_path $func_stripname_result"
+ ;;
+ prog)
+ if test "$pass" = conv; then
+ deplibs="$deplib $deplibs"
+ continue
+ fi
+ if test "$pass" = scan; then
+ deplibs="$deplib $deplibs"
+ else
+ compile_deplibs="$deplib $compile_deplibs"
+ finalize_deplibs="$deplib $finalize_deplibs"
+ fi
+ func_stripname '-L' '' "$deplib"
+ newlib_search_path="$newlib_search_path $func_stripname_result"
+ ;;
+ *)
+ func_warning "\`-L' is ignored for archives/objects"
+ ;;
+ esac # linkmode
+ continue
+ ;; # -L
+ -R*)
+ if test "$pass" = link; then
+ func_stripname '-R' '' "$deplib"
+ dir=$func_stripname_result
+ # Make sure the xrpath contains only unique directories.
+ case "$xrpath " in
+ *" $dir "*) ;;
+ *) xrpath="$xrpath $dir" ;;
+ esac
+ fi
+ deplibs="$deplib $deplibs"
+ continue
+ ;;
+ *.la) lib="$deplib" ;;
+ *.$libext)
+ if test "$pass" = conv; then
+ deplibs="$deplib $deplibs"
+ continue
+ fi
+ case $linkmode in
+ lib)
+ # Linking convenience modules into shared libraries is allowed,
+ # but linking other static libraries is non-portable.
+ case " $dlpreconveniencelibs " in
+ *" $deplib "*) ;;
+ *)
+ valid_a_lib=no
+ case $deplibs_check_method in
+ match_pattern*)
+ set dummy $deplibs_check_method; shift
+ match_pattern_regex=`expr "$deplibs_check_method" : "$1 \(.*\)"`
+ if eval "\$ECHO \"X$deplib\"" 2>/dev/null | $Xsed -e 10q \
+ | $EGREP "$match_pattern_regex" > /dev/null; then
+ valid_a_lib=yes
+ fi
+ ;;
+ pass_all)
+ valid_a_lib=yes
+ ;;
+ esac
+ if test "$valid_a_lib" != yes; then
+ $ECHO
+ $ECHO "*** Warning: Trying to link with static lib archive $deplib."
+ $ECHO "*** I have the capability to make that library automatically link in when"
+ $ECHO "*** you link to this library. But I can only do this if you have a"
+ $ECHO "*** shared version of the library, which you do not appear to have"
+ $ECHO "*** because the file extensions .$libext of this argument makes me believe"
+ $ECHO "*** that it is just a static archive that I should not use here."
+ else
+ $ECHO
+ $ECHO "*** Warning: Linking the shared library $output against the"
+ $ECHO "*** static library $deplib is not portable!"
+ deplibs="$deplib $deplibs"
+ fi
+ ;;
+ esac
+ continue
+ ;;
+ prog)
+ if test "$pass" != link; then
+ deplibs="$deplib $deplibs"
+ else
+ compile_deplibs="$deplib $compile_deplibs"
+ finalize_deplibs="$deplib $finalize_deplibs"
+ fi
+ continue
+ ;;
+ esac # linkmode
+ ;; # *.$libext
+ *.lo | *.$objext)
+ if test "$pass" = conv; then
+ deplibs="$deplib $deplibs"
+ elif test "$linkmode" = prog; then
+ if test "$pass" = dlpreopen || test "$dlopen_support" != yes || test "$build_libtool_libs" = no; then
+ # If there is no dlopen support or we're linking statically,
+ # we need to preload.
+ newdlprefiles="$newdlprefiles $deplib"
+ compile_deplibs="$deplib $compile_deplibs"
+ finalize_deplibs="$deplib $finalize_deplibs"
+ else
+ newdlfiles="$newdlfiles $deplib"
+ fi
+ fi
+ continue
+ ;;
+ %DEPLIBS%)
+ alldeplibs=yes
+ continue
+ ;;
+ esac # case $deplib
+
+ if test "$found" = yes || test -f "$lib"; then :
+ else
+ func_fatal_error "cannot find the library \`$lib' or unhandled argument \`$deplib'"
+ fi
+
+ # Check to see that this really is a libtool archive.
+ func_lalib_unsafe_p "$lib" \
+ || func_fatal_error "\`$lib' is not a valid libtool archive"
+
+ func_dirname "$lib" "" "."
+ ladir="$func_dirname_result"
+
+ dlname=
+ dlopen=
+ dlpreopen=
+ libdir=
+ library_names=
+ old_library=
+ inherited_linker_flags=
+ # If the library was installed with an old release of libtool,
+ # it will not redefine variables installed, or shouldnotlink
+ installed=yes
+ shouldnotlink=no
+ avoidtemprpath=
+
+
+ # Read the .la file
+ func_source "$lib"
+
+ # Convert "-framework foo" to "foo.ltframework"
+ if test -n "$inherited_linker_flags"; then
+ tmp_inherited_linker_flags=`$ECHO "X$inherited_linker_flags" | $Xsed -e 's/-framework \([^ $]*\)/\1.ltframework/g'`
+ for tmp_inherited_linker_flag in $tmp_inherited_linker_flags; do
+ case " $new_inherited_linker_flags " in
+ *" $tmp_inherited_linker_flag "*) ;;
+ *) new_inherited_linker_flags="$new_inherited_linker_flags $tmp_inherited_linker_flag";;
+ esac
+ done
+ fi
+ dependency_libs=`$ECHO "X $dependency_libs" | $Xsed -e 's% \([^ $]*\).ltframework% -framework \1%g'`
+ if test "$linkmode,$pass" = "lib,link" ||
+ test "$linkmode,$pass" = "prog,scan" ||
+ { test "$linkmode" != prog && test "$linkmode" != lib; }; then
+ test -n "$dlopen" && dlfiles="$dlfiles $dlopen"
+ test -n "$dlpreopen" && dlprefiles="$dlprefiles $dlpreopen"
+ fi
+
+ if test "$pass" = conv; then
+ # Only check for convenience libraries
+ deplibs="$lib $deplibs"
+ if test -z "$libdir"; then
+ if test -z "$old_library"; then
+ func_fatal_error "cannot find name of link library for \`$lib'"
+ fi
+ # It is a libtool convenience library, so add in its objects.
+ convenience="$convenience $ladir/$objdir/$old_library"
+ old_convenience="$old_convenience $ladir/$objdir/$old_library"
+ elif test "$linkmode" != prog && test "$linkmode" != lib; then
+ func_fatal_error "\`$lib' is not a convenience library"
+ fi
+ tmp_libs=
+ for deplib in $dependency_libs; do
+ deplibs="$deplib $deplibs"
+ if $opt_duplicate_deps ; then
+ case "$tmp_libs " in
+ *" $deplib "*) specialdeplibs="$specialdeplibs $deplib" ;;
+ esac
+ fi
+ tmp_libs="$tmp_libs $deplib"
+ done
+ continue
+ fi # $pass = conv
+
+
+ # Get the name of the library we link against.
+ linklib=
+ for l in $old_library $library_names; do
+ linklib="$l"
+ done
+ if test -z "$linklib"; then
+ func_fatal_error "cannot find name of link library for \`$lib'"
+ fi
+
+ # This library was specified with -dlopen.
+ if test "$pass" = dlopen; then
+ if test -z "$libdir"; then
+ func_fatal_error "cannot -dlopen a convenience library: \`$lib'"
+ fi
+ if test -z "$dlname" ||
+ test "$dlopen_support" != yes ||
+ test "$build_libtool_libs" = no; then
+ # If there is no dlname, no dlopen support or we're linking
+ # statically, we need to preload. We also need to preload any
+ # dependent libraries so libltdl's deplib preloader doesn't
+ # bomb out in the load deplibs phase.
+ dlprefiles="$dlprefiles $lib $dependency_libs"
+ else
+ newdlfiles="$newdlfiles $lib"
+ fi
+ continue
+ fi # $pass = dlopen
+
+ # We need an absolute path.
+ case $ladir in
+ [\\/]* | [A-Za-z]:[\\/]*) abs_ladir="$ladir" ;;
+ *)
+ abs_ladir=`cd "$ladir" && pwd`
+ if test -z "$abs_ladir"; then
+ func_warning "cannot determine absolute directory name of \`$ladir'"
+ func_warning "passing it literally to the linker, although it might fail"
+ abs_ladir="$ladir"
+ fi
+ ;;
+ esac
+ func_basename "$lib"
+ laname="$func_basename_result"
+
+ # Find the relevant object directory and library name.
+ if test "X$installed" = Xyes; then
+ if test ! -f "$libdir/$linklib" && test -f "$abs_ladir/$linklib"; then
+ func_warning "library \`$lib' was moved."
+ dir="$ladir"
+ absdir="$abs_ladir"
+ libdir="$abs_ladir"
+ else
+ dir="$libdir"
+ absdir="$libdir"
+ fi
+ test "X$hardcode_automatic" = Xyes && avoidtemprpath=yes
+ else
+ if test ! -f "$ladir/$objdir/$linklib" && test -f "$abs_ladir/$linklib"; then
+ dir="$ladir"
+ absdir="$abs_ladir"
+ # Remove this search path later
+ notinst_path="$notinst_path $abs_ladir"
+ else
+ dir="$ladir/$objdir"
+ absdir="$abs_ladir/$objdir"
+ # Remove this search path later
+ notinst_path="$notinst_path $abs_ladir"
+ fi
+ fi # $installed = yes
+ func_stripname 'lib' '.la' "$laname"
+ name=$func_stripname_result
+
+ # This library was specified with -dlpreopen.
+ if test "$pass" = dlpreopen; then
+ if test -z "$libdir" && test "$linkmode" = prog; then
+ func_fatal_error "only libraries may -dlpreopen a convenience library: \`$lib'"
+ fi
+ # Prefer using a static library (so that no silly _DYNAMIC symbols
+ # are required to link).
+ if test -n "$old_library"; then
+ newdlprefiles="$newdlprefiles $dir/$old_library"
+ # Keep a list of preopened convenience libraries to check
+ # that they are being used correctly in the link pass.
+ test -z "$libdir" && \
+ dlpreconveniencelibs="$dlpreconveniencelibs $dir/$old_library"
+ # Otherwise, use the dlname, so that lt_dlopen finds it.
+ elif test -n "$dlname"; then
+ newdlprefiles="$newdlprefiles $dir/$dlname"
+ else
+ newdlprefiles="$newdlprefiles $dir/$linklib"
+ fi
+ fi # $pass = dlpreopen
+
+ if test -z "$libdir"; then
+ # Link the convenience library
+ if test "$linkmode" = lib; then
+ deplibs="$dir/$old_library $deplibs"
+ elif test "$linkmode,$pass" = "prog,link"; then
+ compile_deplibs="$dir/$old_library $compile_deplibs"
+ finalize_deplibs="$dir/$old_library $finalize_deplibs"
+ else
+ deplibs="$lib $deplibs" # used for prog,scan pass
+ fi
+ continue
+ fi
+
+
+ if test "$linkmode" = prog && test "$pass" != link; then
+ newlib_search_path="$newlib_search_path $ladir"
+ deplibs="$lib $deplibs"
+
+ linkalldeplibs=no
+ if test "$link_all_deplibs" != no || test -z "$library_names" ||
+ test "$build_libtool_libs" = no; then
+ linkalldeplibs=yes
+ fi
+
+ tmp_libs=
+ for deplib in $dependency_libs; do
+ case $deplib in
+ -L*) func_stripname '-L' '' "$deplib"
+ newlib_search_path="$newlib_search_path $func_stripname_result"
+ ;;
+ esac
+ # Need to link against all dependency_libs?
+ if test "$linkalldeplibs" = yes; then
+ deplibs="$deplib $deplibs"
+ else
+ # Need to hardcode shared library paths
+ # or/and link against static libraries
+ newdependency_libs="$deplib $newdependency_libs"
+ fi
+ if $opt_duplicate_deps ; then
+ case "$tmp_libs " in
+ *" $deplib "*) specialdeplibs="$specialdeplibs $deplib" ;;
+ esac
+ fi
+ tmp_libs="$tmp_libs $deplib"
+ done # for deplib
+ continue
+ fi # $linkmode = prog...
+
+ if test "$linkmode,$pass" = "prog,link"; then
+ if test -n "$library_names" &&
+ { { test "$prefer_static_libs" = no ||
+ test "$prefer_static_libs,$installed" = "built,yes"; } ||
+ test -z "$old_library"; }; then
+ # We need to hardcode the library path
+ if test -n "$shlibpath_var" && test -z "$avoidtemprpath" ; then
+ # Make sure the rpath contains only unique directories.
+ case "$temp_rpath:" in
+ *"$absdir:"*) ;;
+ *) temp_rpath="$temp_rpath$absdir:" ;;
+ esac
+ fi
+
+ # Hardcode the library path.
+ # Skip directories that are in the system default run-time
+ # search path.
+ case " $sys_lib_dlsearch_path " in
+ *" $absdir "*) ;;
+ *)
+ case "$compile_rpath " in
+ *" $absdir "*) ;;
+ *) compile_rpath="$compile_rpath $absdir"
+ esac
+ ;;
+ esac
+ case " $sys_lib_dlsearch_path " in
+ *" $libdir "*) ;;
+ *)
+ case "$finalize_rpath " in
+ *" $libdir "*) ;;
+ *) finalize_rpath="$finalize_rpath $libdir"
+ esac
+ ;;
+ esac
+ fi # $linkmode,$pass = prog,link...
+
+ if test "$alldeplibs" = yes &&
+ { test "$deplibs_check_method" = pass_all ||
+ { test "$build_libtool_libs" = yes &&
+ test -n "$library_names"; }; }; then
+ # We only need to search for static libraries
+ continue
+ fi
+ fi
+
+ link_static=no # Whether the deplib will be linked statically
+ use_static_libs=$prefer_static_libs
+ if test "$use_static_libs" = built && test "$installed" = yes; then
+ use_static_libs=no
+ fi
+ if test -n "$library_names" &&
+ { test "$use_static_libs" = no || test -z "$old_library"; }; then
+ case $host in
+ *cygwin* | *mingw* | *cegcc*)
+ # No point in relinking DLLs because paths are not encoded
+ notinst_deplibs="$notinst_deplibs $lib"
+ need_relink=no
+ ;;
+ *)
+ if test "$installed" = no; then
+ notinst_deplibs="$notinst_deplibs $lib"
+ need_relink=yes
+ fi
+ ;;
+ esac
+ # This is a shared library
+
+ # Warn about portability, can't link against -module's on some
+ # systems (darwin). Don't bleat about dlopened modules though!
+ dlopenmodule=""
+ for dlpremoduletest in $dlprefiles; do
+ if test "X$dlpremoduletest" = "X$lib"; then
+ dlopenmodule="$dlpremoduletest"
+ break
+ fi
+ done
+ if test -z "$dlopenmodule" && test "$shouldnotlink" = yes && test "$pass" = link; then
+ $ECHO
+ if test "$linkmode" = prog; then
+ $ECHO "*** Warning: Linking the executable $output against the loadable module"
+ else
+ $ECHO "*** Warning: Linking the shared library $output against the loadable module"
+ fi
+ $ECHO "*** $linklib is not portable!"
+ fi
+ if test "$linkmode" = lib &&
+ test "$hardcode_into_libs" = yes; then
+ # Hardcode the library path.
+ # Skip directories that are in the system default run-time
+ # search path.
+ case " $sys_lib_dlsearch_path " in
+ *" $absdir "*) ;;
+ *)
+ case "$compile_rpath " in
+ *" $absdir "*) ;;
+ *) compile_rpath="$compile_rpath $absdir"
+ esac
+ ;;
+ esac
+ case " $sys_lib_dlsearch_path " in
+ *" $libdir "*) ;;
+ *)
+ case "$finalize_rpath " in
+ *" $libdir "*) ;;
+ *) finalize_rpath="$finalize_rpath $libdir"
+ esac
+ ;;
+ esac
+ fi
+
+ if test -n "$old_archive_from_expsyms_cmds"; then
+ # figure out the soname
+ set dummy $library_names
+ shift
+ realname="$1"
+ shift
+ libname=`eval "\\$ECHO \"$libname_spec\""`
+ # use dlname if we got it. it's perfectly good, no?
+ if test -n "$dlname"; then
+ soname="$dlname"
+ elif test -n "$soname_spec"; then
+ # bleh windows
+ case $host in
+ *cygwin* | mingw* | *cegcc*)
+ func_arith $current - $age
+ major=$func_arith_result
+ versuffix="-$major"
+ ;;
+ esac
+ eval soname=\"$soname_spec\"
+ else
+ soname="$realname"
+ fi
+
+ # Make a new name for the extract_expsyms_cmds to use
+ soroot="$soname"
+ func_basename "$soroot"
+ soname="$func_basename_result"
+ func_stripname 'lib' '.dll' "$soname"
+ newlib=libimp-$func_stripname_result.a
+
+ # If the library has no export list, then create one now
+ if test -f "$output_objdir/$soname-def"; then :
+ else
+ func_verbose "extracting exported symbol list from \`$soname'"
+ func_execute_cmds "$extract_expsyms_cmds" 'exit $?'
+ fi
+
+ # Create $newlib
+ if test -f "$output_objdir/$newlib"; then :; else
+ func_verbose "generating import library for \`$soname'"
+ func_execute_cmds "$old_archive_from_expsyms_cmds" 'exit $?'
+ fi
+ # make sure the library variables are pointing to the new library
+ dir=$output_objdir
+ linklib=$newlib
+ fi # test -n "$old_archive_from_expsyms_cmds"
+
+ if test "$linkmode" = prog || test "$mode" != relink; then
+ add_shlibpath=
+ add_dir=
+ add=
+ lib_linked=yes
+ case $hardcode_action in
+ immediate | unsupported)
+ if test "$hardcode_direct" = no; then
+ add="$dir/$linklib"
+ case $host in
+ *-*-sco3.2v5.0.[024]*) add_dir="-L$dir" ;;
+ *-*-sysv4*uw2*) add_dir="-L$dir" ;;
+ *-*-sysv5OpenUNIX* | *-*-sysv5UnixWare7.[01].[10]* | \
+ *-*-unixware7*) add_dir="-L$dir" ;;
+ *-*-darwin* )
+ # if the lib is a (non-dlopened) module then we can not
+ # link against it, someone is ignoring the earlier warnings
+ if /usr/bin/file -L $add 2> /dev/null |
+ $GREP ": [^:]* bundle" >/dev/null ; then
+ if test "X$dlopenmodule" != "X$lib"; then
+ $ECHO "*** Warning: lib $linklib is a module, not a shared library"
+ if test -z "$old_library" ; then
+ $ECHO
+ $ECHO "*** And there doesn't seem to be a static archive available"
+ $ECHO "*** The link will probably fail, sorry"
+ else
+ add="$dir/$old_library"
+ fi
+ elif test -n "$old_library"; then
+ add="$dir/$old_library"
+ fi
+ fi
+ esac
+ elif test "$hardcode_minus_L" = no; then
+ case $host in
+ *-*-sunos*) add_shlibpath="$dir" ;;
+ esac
+ add_dir="-L$dir"
+ add="-l$name"
+ elif test "$hardcode_shlibpath_var" = no; then
+ add_shlibpath="$dir"
+ add="-l$name"
+ else
+ lib_linked=no
+ fi
+ ;;
+ relink)
+ if test "$hardcode_direct" = yes &&
+ test "$hardcode_direct_absolute" = no; then
+ add="$dir/$linklib"
+ elif test "$hardcode_minus_L" = yes; then
+ add_dir="-L$dir"
+ # Try looking first in the location we're being installed to.
+ if test -n "$inst_prefix_dir"; then
+ case $libdir in
+ [\\/]*)
+ add_dir="$add_dir -L$inst_prefix_dir$libdir"
+ ;;
+ esac
+ fi
+ add="-l$name"
+ elif test "$hardcode_shlibpath_var" = yes; then
+ add_shlibpath="$dir"
+ add="-l$name"
+ else
+ lib_linked=no
+ fi
+ ;;
+ *) lib_linked=no ;;
+ esac
+
+ if test "$lib_linked" != yes; then
+ func_fatal_configuration "unsupported hardcode properties"
+ fi
+
+ if test -n "$add_shlibpath"; then
+ case :$compile_shlibpath: in
+ *":$add_shlibpath:"*) ;;
+ *) compile_shlibpath="$compile_shlibpath$add_shlibpath:" ;;
+ esac
+ fi
+ if test "$linkmode" = prog; then
+ test -n "$add_dir" && compile_deplibs="$add_dir $compile_deplibs"
+ test -n "$add" && compile_deplibs="$add $compile_deplibs"
+ else
+ test -n "$add_dir" && deplibs="$add_dir $deplibs"
+ test -n "$add" && deplibs="$add $deplibs"
+ if test "$hardcode_direct" != yes &&
+ test "$hardcode_minus_L" != yes &&
+ test "$hardcode_shlibpath_var" = yes; then
+ case :$finalize_shlibpath: in
+ *":$libdir:"*) ;;
+ *) finalize_shlibpath="$finalize_shlibpath$libdir:" ;;
+ esac
+ fi
+ fi
+ fi
+
+ if test "$linkmode" = prog || test "$mode" = relink; then
+ add_shlibpath=
+ add_dir=
+ add=
+ # Finalize command for both is simple: just hardcode it.
+ if test "$hardcode_direct" = yes &&
+ test "$hardcode_direct_absolute" = no; then
+ add="$libdir/$linklib"
+ elif test "$hardcode_minus_L" = yes; then
+ add_dir="-L$libdir"
+ add="-l$name"
+ elif test "$hardcode_shlibpath_var" = yes; then
+ case :$finalize_shlibpath: in
+ *":$libdir:"*) ;;
+ *) finalize_shlibpath="$finalize_shlibpath$libdir:" ;;
+ esac
+ add="-l$name"
+ elif test "$hardcode_automatic" = yes; then
+ if test -n "$inst_prefix_dir" &&
+ test -f "$inst_prefix_dir$libdir/$linklib" ; then
+ add="$inst_prefix_dir$libdir/$linklib"
+ else
+ add="$libdir/$linklib"
+ fi
+ else
+ # We cannot seem to hardcode it, guess we'll fake it.
+ add_dir="-L$libdir"
+ # Try looking first in the location we're being installed to.
+ if test -n "$inst_prefix_dir"; then
+ case $libdir in
+ [\\/]*)
+ add_dir="$add_dir -L$inst_prefix_dir$libdir"
+ ;;
+ esac
+ fi
+ add="-l$name"
+ fi
+
+ if test "$linkmode" = prog; then
+ test -n "$add_dir" && finalize_deplibs="$add_dir $finalize_deplibs"
+ test -n "$add" && finalize_deplibs="$add $finalize_deplibs"
+ else
+ test -n "$add_dir" && deplibs="$add_dir $deplibs"
+ test -n "$add" && deplibs="$add $deplibs"
+ fi
+ fi
+ elif test "$linkmode" = prog; then
+ # Here we assume that one of hardcode_direct or hardcode_minus_L
+ # is not unsupported. This is valid on all known static and
+ # shared platforms.
+ if test "$hardcode_direct" != unsupported; then
+ test -n "$old_library" && linklib="$old_library"
+ compile_deplibs="$dir/$linklib $compile_deplibs"
+ finalize_deplibs="$dir/$linklib $finalize_deplibs"
+ else
+ compile_deplibs="-l$name -L$dir $compile_deplibs"
+ finalize_deplibs="-l$name -L$dir $finalize_deplibs"
+ fi
+ elif test "$build_libtool_libs" = yes; then
+ # Not a shared library
+ if test "$deplibs_check_method" != pass_all; then
+ # We're trying link a shared library against a static one
+ # but the system doesn't support it.
+
+ # Just print a warning and add the library to dependency_libs so
+ # that the program can be linked against the static library.
+ $ECHO
+ $ECHO "*** Warning: This system can not link to static lib archive $lib."
+ $ECHO "*** I have the capability to make that library automatically link in when"
+ $ECHO "*** you link to this library. But I can only do this if you have a"
+ $ECHO "*** shared version of the library, which you do not appear to have."
+ if test "$module" = yes; then
+ $ECHO "*** But as you try to build a module library, libtool will still create "
+ $ECHO "*** a static module, that should work as long as the dlopening application"
+ $ECHO "*** is linked with the -dlopen flag to resolve symbols at runtime."
+ if test -z "$global_symbol_pipe"; then
+ $ECHO
+ $ECHO "*** However, this would only work if libtool was able to extract symbol"
+ $ECHO "*** lists from a program, using \`nm' or equivalent, but libtool could"
+ $ECHO "*** not find such a program. So, this module is probably useless."
+ $ECHO "*** \`nm' from GNU binutils and a full rebuild may help."
+ fi
+ if test "$build_old_libs" = no; then
+ build_libtool_libs=module
+ build_old_libs=yes
+ else
+ build_libtool_libs=no
+ fi
+ fi
+ else
+ deplibs="$dir/$old_library $deplibs"
+ link_static=yes
+ fi
+ fi # link shared/static library?
+
+ if test "$linkmode" = lib; then
+ if test -n "$dependency_libs" &&
+ { test "$hardcode_into_libs" != yes ||
+ test "$build_old_libs" = yes ||
+ test "$link_static" = yes; }; then
+ # Extract -R from dependency_libs
+ temp_deplibs=
+ for libdir in $dependency_libs; do
+ case $libdir in
+ -R*) func_stripname '-R' '' "$libdir"
+ temp_xrpath=$func_stripname_result
+ case " $xrpath " in
+ *" $temp_xrpath "*) ;;
+ *) xrpath="$xrpath $temp_xrpath";;
+ esac;;
+ *) temp_deplibs="$temp_deplibs $libdir";;
+ esac
+ done
+ dependency_libs="$temp_deplibs"
+ fi
+
+ newlib_search_path="$newlib_search_path $absdir"
+ # Link against this library
+ test "$link_static" = no && newdependency_libs="$abs_ladir/$laname $newdependency_libs"
+ # ... and its dependency_libs
+ tmp_libs=
+ for deplib in $dependency_libs; do
+ newdependency_libs="$deplib $newdependency_libs"
+ if $opt_duplicate_deps ; then
+ case "$tmp_libs " in
+ *" $deplib "*) specialdeplibs="$specialdeplibs $deplib" ;;
+ esac
+ fi
+ tmp_libs="$tmp_libs $deplib"
+ done
+
+ if test "$link_all_deplibs" != no; then
+ # Add the search paths of all dependency libraries
+ for deplib in $dependency_libs; do
+ case $deplib in
+ -L*) path="$deplib" ;;
+ *.la)
+ func_dirname "$deplib" "" "."
+ dir="$func_dirname_result"
+ # We need an absolute path.
+ case $dir in
+ [\\/]* | [A-Za-z]:[\\/]*) absdir="$dir" ;;
+ *)
+ absdir=`cd "$dir" && pwd`
+ if test -z "$absdir"; then
+ func_warning "cannot determine absolute directory name of \`$dir'"
+ absdir="$dir"
+ fi
+ ;;
+ esac
+ if $GREP "^installed=no" $deplib > /dev/null; then
+ case $host in
+ *-*-darwin*)
+ depdepl=
+ eval deplibrary_names=`${SED} -n -e 's/^library_names=\(.*\)$/\1/p' $deplib`
+ if test -n "$deplibrary_names" ; then
+ for tmp in $deplibrary_names ; do
+ depdepl=$tmp
+ done
+ if test -f "$absdir/$objdir/$depdepl" ; then
+ depdepl="$absdir/$objdir/$depdepl"
+ darwin_install_name=`${OTOOL} -L $depdepl | awk '{if (NR == 2) {print $1;exit}}'`
+ if test -z "$darwin_install_name"; then
+ darwin_install_name=`${OTOOL64} -L $depdepl | awk '{if (NR == 2) {print $1;exit}}'`
+ fi
+ compiler_flags="$compiler_flags ${wl}-dylib_file ${wl}${darwin_install_name}:${depdepl}"
+ linker_flags="$linker_flags -dylib_file ${darwin_install_name}:${depdepl}"
+ path=
+ fi
+ fi
+ ;;
+ *)
+ path="-L$absdir/$objdir"
+ ;;
+ esac
+ else
+ eval libdir=`${SED} -n -e 's/^libdir=\(.*\)$/\1/p' $deplib`
+ test -z "$libdir" && \
+ func_fatal_error "\`$deplib' is not a valid libtool archive"
+ test "$absdir" != "$libdir" && \
+ func_warning "\`$deplib' seems to be moved"
+
+ path="-L$absdir"
+ fi
+ ;;
+ esac
+ case " $deplibs " in
+ *" $path "*) ;;
+ *) deplibs="$path $deplibs" ;;
+ esac
+ done
+ fi # link_all_deplibs != no
+ fi # linkmode = lib
+ done # for deplib in $libs
+ if test "$pass" = link; then
+ if test "$linkmode" = "prog"; then
+ compile_deplibs="$new_inherited_linker_flags $compile_deplibs"
+ finalize_deplibs="$new_inherited_linker_flags $finalize_deplibs"
+ else
+ compiler_flags="$compiler_flags "`$ECHO "X $new_inherited_linker_flags" | $Xsed -e 's% \([^ $]*\).ltframework% -framework \1%g'`
+ fi
+ fi
+ dependency_libs="$newdependency_libs"
+ if test "$pass" = dlpreopen; then
+ # Link the dlpreopened libraries before other libraries
+ for deplib in $save_deplibs; do
+ deplibs="$deplib $deplibs"
+ done
+ fi
+ if test "$pass" != dlopen; then
+ if test "$pass" != conv; then
+ # Make sure lib_search_path contains only unique directories.
+ lib_search_path=
+ for dir in $newlib_search_path; do
+ case "$lib_search_path " in
+ *" $dir "*) ;;
+ *) lib_search_path="$lib_search_path $dir" ;;
+ esac
+ done
+ newlib_search_path=
+ fi
+
+ if test "$linkmode,$pass" != "prog,link"; then
+ vars="deplibs"
+ else
+ vars="compile_deplibs finalize_deplibs"
+ fi
+ for var in $vars dependency_libs; do
+ # Add libraries to $var in reverse order
+ eval tmp_libs=\"\$$var\"
+ new_libs=
+ for deplib in $tmp_libs; do
+ # FIXME: Pedantically, this is the right thing to do, so
+ # that some nasty dependency loop isn't accidentally
+ # broken:
+ #new_libs="$deplib $new_libs"
+ # Pragmatically, this seems to cause very few problems in
+ # practice:
+ case $deplib in
+ -L*) new_libs="$deplib $new_libs" ;;
+ -R*) ;;
+ *)
+ # And here is the reason: when a library appears more
+ # than once as an explicit dependence of a library, or
+ # is implicitly linked in more than once by the
+ # compiler, it is considered special, and multiple
+ # occurrences thereof are not removed. Compare this
+ # with having the same library being listed as a
+ # dependency of multiple other libraries: in this case,
+ # we know (pedantically, we assume) the library does not
+ # need to be listed more than once, so we keep only the
+ # last copy. This is not always right, but it is rare
+ # enough that we require users that really mean to play
+ # such unportable linking tricks to link the library
+ # using -Wl,-lname, so that libtool does not consider it
+ # for duplicate removal.
+ case " $specialdeplibs " in
+ *" $deplib "*) new_libs="$deplib $new_libs" ;;
+ *)
+ case " $new_libs " in
+ *" $deplib "*) ;;
+ *) new_libs="$deplib $new_libs" ;;
+ esac
+ ;;
+ esac
+ ;;
+ esac
+ done
+ tmp_libs=
+ for deplib in $new_libs; do
+ case $deplib in
+ -L*)
+ case " $tmp_libs " in
+ *" $deplib "*) ;;
+ *) tmp_libs="$tmp_libs $deplib" ;;
+ esac
+ ;;
+ *) tmp_libs="$tmp_libs $deplib" ;;
+ esac
+ done
+ eval $var=\"$tmp_libs\"
+ done # for var
+ fi
+ # Last step: remove runtime libs from dependency_libs
+ # (they stay in deplibs)
+ tmp_libs=
+ for i in $dependency_libs ; do
+ case " $predeps $postdeps $compiler_lib_search_path " in
+ *" $i "*)
+ i=""
+ ;;
+ esac
+ if test -n "$i" ; then
+ tmp_libs="$tmp_libs $i"
+ fi
+ done
+ dependency_libs=$tmp_libs
+ done # for pass
+ if test "$linkmode" = prog; then
+ dlfiles="$newdlfiles"
+ fi
+ if test "$linkmode" = prog || test "$linkmode" = lib; then
+ dlprefiles="$newdlprefiles"
+ fi
+
+ case $linkmode in
+ oldlib)
+ if test -n "$dlfiles$dlprefiles" || test "$dlself" != no; then
+ func_warning "\`-dlopen' is ignored for archives"
+ fi
+
+ case " $deplibs" in
+ *\ -l* | *\ -L*)
+ func_warning "\`-l' and \`-L' are ignored for archives" ;;
+ esac
+
+ test -n "$rpath" && \
+ func_warning "\`-rpath' is ignored for archives"
+
+ test -n "$xrpath" && \
+ func_warning "\`-R' is ignored for archives"
+
+ test -n "$vinfo" && \
+ func_warning "\`-version-info/-version-number' is ignored for archives"
+
+ test -n "$release" && \
+ func_warning "\`-release' is ignored for archives"
+
+ test -n "$export_symbols$export_symbols_regex" && \
+ func_warning "\`-export-symbols' is ignored for archives"
+
+ # Now set the variables for building old libraries.
+ build_libtool_libs=no
+ oldlibs="$output"
+ objs="$objs$old_deplibs"
+ ;;
+
+ lib)
+ # Make sure we only generate libraries of the form `libNAME.la'.
+ case $outputname in
+ lib*)
+ func_stripname 'lib' '.la' "$outputname"
+ name=$func_stripname_result
+ eval shared_ext=\"$shrext_cmds\"
+ eval libname=\"$libname_spec\"
+ ;;
+ *)
+ test "$module" = no && \
+ func_fatal_help "libtool library \`$output' must begin with \`lib'"
+
+ if test "$need_lib_prefix" != no; then
+ # Add the "lib" prefix for modules if required
+ func_stripname '' '.la' "$outputname"
+ name=$func_stripname_result
+ eval shared_ext=\"$shrext_cmds\"
+ eval libname=\"$libname_spec\"
+ else
+ func_stripname '' '.la' "$outputname"
+ libname=$func_stripname_result
+ fi
+ ;;
+ esac
+
+ if test -n "$objs"; then
+ if test "$deplibs_check_method" != pass_all; then
+ func_fatal_error "cannot build libtool library \`$output' from non-libtool objects on this host:$objs"
+ else
+ $ECHO
+ $ECHO "*** Warning: Linking the shared library $output against the non-libtool"
+ $ECHO "*** objects $objs is not portable!"
+ libobjs="$libobjs $objs"
+ fi
+ fi
+
+ test "$dlself" != no && \
+ func_warning "\`-dlopen self' is ignored for libtool libraries"
+
+ set dummy $rpath
+ shift
+ test "$#" -gt 1 && \
+ func_warning "ignoring multiple \`-rpath's for a libtool library"
+
+ install_libdir="$1"
+
+ oldlibs=
+ if test -z "$rpath"; then
+ if test "$build_libtool_libs" = yes; then
+ # Building a libtool convenience library.
+ # Some compilers have problems with a `.al' extension so
+ # convenience libraries should have the same extension an
+ # archive normally would.
+ oldlibs="$output_objdir/$libname.$libext $oldlibs"
+ build_libtool_libs=convenience
+ build_old_libs=yes
+ fi
+
+ test -n "$vinfo" && \
+ func_warning "\`-version-info/-version-number' is ignored for convenience libraries"
+
+ test -n "$release" && \
+ func_warning "\`-release' is ignored for convenience libraries"
+ else
+
+ # Parse the version information argument.
+ save_ifs="$IFS"; IFS=':'
+ set dummy $vinfo 0 0 0
+ shift
+ IFS="$save_ifs"
+
+ test -n "$7" && \
+ func_fatal_help "too many parameters to \`-version-info'"
+
+ # convert absolute version numbers to libtool ages
+ # this retains compatibility with .la files and attempts
+ # to make the code below a bit more comprehensible
+
+ case $vinfo_number in
+ yes)
+ number_major="$1"
+ number_minor="$2"
+ number_revision="$3"
+ #
+ # There are really only two kinds -- those that
+ # use the current revision as the major version
+ # and those that subtract age and use age as
+ # a minor version. But, then there is irix
+ # which has an extra 1 added just for fun
+ #
+ case $version_type in
+ darwin|linux|osf|windows|none)
+ func_arith $number_major + $number_minor
+ current=$func_arith_result
+ age="$number_minor"
+ revision="$number_revision"
+ ;;
+ freebsd-aout|freebsd-elf|sunos)
+ current="$number_major"
+ revision="$number_minor"
+ age="0"
+ ;;
+ irix|nonstopux)
+ func_arith $number_major + $number_minor
+ current=$func_arith_result
+ age="$number_minor"
+ revision="$number_minor"
+ lt_irix_increment=no
+ ;;
+ esac
+ ;;
+ no)
+ current="$1"
+ revision="$2"
+ age="$3"
+ ;;
+ esac
+
+ # Check that each of the things are valid numbers.
+ case $current in
+ 0|[1-9]|[1-9][0-9]|[1-9][0-9][0-9]|[1-9][0-9][0-9][0-9]|[1-9][0-9][0-9][0-9][0-9]) ;;
+ *)
+ func_error "CURRENT \`$current' must be a nonnegative integer"
+ func_fatal_error "\`$vinfo' is not valid version information"
+ ;;
+ esac
+
+ case $revision in
+ 0|[1-9]|[1-9][0-9]|[1-9][0-9][0-9]|[1-9][0-9][0-9][0-9]|[1-9][0-9][0-9][0-9][0-9]) ;;
+ *)
+ func_error "REVISION \`$revision' must be a nonnegative integer"
+ func_fatal_error "\`$vinfo' is not valid version information"
+ ;;
+ esac
+
+ case $age in
+ 0|[1-9]|[1-9][0-9]|[1-9][0-9][0-9]|[1-9][0-9][0-9][0-9]|[1-9][0-9][0-9][0-9][0-9]) ;;
+ *)
+ func_error "AGE \`$age' must be a nonnegative integer"
+ func_fatal_error "\`$vinfo' is not valid version information"
+ ;;
+ esac
+
+ if test "$age" -gt "$current"; then
+ func_error "AGE \`$age' is greater than the current interface number \`$current'"
+ func_fatal_error "\`$vinfo' is not valid version information"
+ fi
+
+ # Calculate the version variables.
+ major=
+ versuffix=
+ verstring=
+ case $version_type in
+ none) ;;
+
+ darwin)
+ # Like Linux, but with the current version available in
+ # verstring for coding it into the library header
+ func_arith $current - $age
+ major=.$func_arith_result
+ versuffix="$major.$age.$revision"
+ # Darwin ld doesn't like 0 for these options...
+ func_arith $current + 1
+ minor_current=$func_arith_result
+ xlcverstring="${wl}-compatibility_version ${wl}$minor_current ${wl}-current_version ${wl}$minor_current.$revision"
+ verstring="-compatibility_version $minor_current -current_version $minor_current.$revision"
+ ;;
+
+ freebsd-aout)
+ major=".$current"
+ versuffix=".$current.$revision";
+ ;;
+
+ freebsd-elf)
+ major=".$current"
+ versuffix=".$current"
+ ;;
+
+ irix | nonstopux)
+ if test "X$lt_irix_increment" = "Xno"; then
+ func_arith $current - $age
+ else
+ func_arith $current - $age + 1
+ fi
+ major=$func_arith_result
+
+ case $version_type in
+ nonstopux) verstring_prefix=nonstopux ;;
+ *) verstring_prefix=sgi ;;
+ esac
+ verstring="$verstring_prefix$major.$revision"
+
+ # Add in all the interfaces that we are compatible with.
+ loop=$revision
+ while test "$loop" -ne 0; do
+ func_arith $revision - $loop
+ iface=$func_arith_result
+ func_arith $loop - 1
+ loop=$func_arith_result
+ verstring="$verstring_prefix$major.$iface:$verstring"
+ done
+
+ # Before this point, $major must not contain `.'.
+ major=.$major
+ versuffix="$major.$revision"
+ ;;
+
+ linux)
+ func_arith $current - $age
+ major=.$func_arith_result
+ versuffix="$major.$age.$revision"
+ ;;
+
+ osf)
+ func_arith $current - $age
+ major=.$func_arith_result
+ versuffix=".$current.$age.$revision"
+ verstring="$current.$age.$revision"
+
+ # Add in all the interfaces that we are compatible with.
+ loop=$age
+ while test "$loop" -ne 0; do
+ func_arith $current - $loop
+ iface=$func_arith_result
+ func_arith $loop - 1
+ loop=$func_arith_result
+ verstring="$verstring:${iface}.0"
+ done
+
+ # Make executables depend on our current version.
+ verstring="$verstring:${current}.0"
+ ;;
+
+ qnx)
+ major=".$current"
+ versuffix=".$current"
+ ;;
+
+ sunos)
+ major=".$current"
+ versuffix=".$current.$revision"
+ ;;
+
+ windows)
+ # Use '-' rather than '.', since we only want one
+ # extension on DOS 8.3 filesystems.
+ func_arith $current - $age
+ major=$func_arith_result
+ versuffix="-$major"
+ ;;
+
+ *)
+ func_fatal_configuration "unknown library version type \`$version_type'"
+ ;;
+ esac
+
+ # Clear the version info if we defaulted, and they specified a release.
+ if test -z "$vinfo" && test -n "$release"; then
+ major=
+ case $version_type in
+ darwin)
+ # we can't check for "0.0" in archive_cmds due to quoting
+ # problems, so we reset it completely
+ verstring=
+ ;;
+ *)
+ verstring="0.0"
+ ;;
+ esac
+ if test "$need_version" = no; then
+ versuffix=
+ else
+ versuffix=".0.0"
+ fi
+ fi
+
+ # Remove version info from name if versioning should be avoided
+ if test "$avoid_version" = yes && test "$need_version" = no; then
+ major=
+ versuffix=
+ verstring=""
+ fi
+
+ # Check to see if the archive will have undefined symbols.
+ if test "$allow_undefined" = yes; then
+ if test "$allow_undefined_flag" = unsupported; then
+ func_warning "undefined symbols not allowed in $host shared libraries"
+ build_libtool_libs=no
+ build_old_libs=yes
+ fi
+ else
+ # Don't allow undefined symbols.
+ allow_undefined_flag="$no_undefined_flag"
+ fi
+
+ fi
+
+ func_generate_dlsyms "$libname" "$libname" "yes"
+ libobjs="$libobjs $symfileobj"
+ test "X$libobjs" = "X " && libobjs=
+
+ if test "$mode" != relink; then
+ # Remove our outputs, but don't remove object files since they
+ # may have been created when compiling PIC objects.
+ removelist=
+ tempremovelist=`$ECHO "$output_objdir/*"`
+ for p in $tempremovelist; do
+ case $p in
+ *.$objext | *.gcno)
+ ;;
+ $output_objdir/$outputname | $output_objdir/$libname.* | $output_objdir/${libname}${release}.*)
+ if test "X$precious_files_regex" != "X"; then
+ if $ECHO "$p" | $EGREP -e "$precious_files_regex" >/dev/null 2>&1
+ then
+ continue
+ fi
+ fi
+ removelist="$removelist $p"
+ ;;
+ *) ;;
+ esac
+ done
+ test -n "$removelist" && \
+ func_show_eval "${RM}r \$removelist"
+ fi
+
+ # Now set the variables for building old libraries.
+ if test "$build_old_libs" = yes && test "$build_libtool_libs" != convenience ; then
+ oldlibs="$oldlibs $output_objdir/$libname.$libext"
+
+ # Transform .lo files to .o files.
+ oldobjs="$objs "`$ECHO "X$libobjs" | $SP2NL | $Xsed -e '/\.'${libext}'$/d' -e "$lo2o" | $NL2SP`
+ fi
+
+ # Eliminate all temporary directories.
+ #for path in $notinst_path; do
+ # lib_search_path=`$ECHO "X$lib_search_path " | $Xsed -e "s% $path % %g"`
+ # deplibs=`$ECHO "X$deplibs " | $Xsed -e "s% -L$path % %g"`
+ # dependency_libs=`$ECHO "X$dependency_libs " | $Xsed -e "s% -L$path % %g"`
+ #done
+
+ if test -n "$xrpath"; then
+ # If the user specified any rpath flags, then add them.
+ temp_xrpath=
+ for libdir in $xrpath; do
+ temp_xrpath="$temp_xrpath -R$libdir"
+ case "$finalize_rpath " in
+ *" $libdir "*) ;;
+ *) finalize_rpath="$finalize_rpath $libdir" ;;
+ esac
+ done
+ if test "$hardcode_into_libs" != yes || test "$build_old_libs" = yes; then
+ dependency_libs="$temp_xrpath $dependency_libs"
+ fi
+ fi
+
+ # Make sure dlfiles contains only unique files that won't be dlpreopened
+ old_dlfiles="$dlfiles"
+ dlfiles=
+ for lib in $old_dlfiles; do
+ case " $dlprefiles $dlfiles " in
+ *" $lib "*) ;;
+ *) dlfiles="$dlfiles $lib" ;;
+ esac
+ done
+
+ # Make sure dlprefiles contains only unique files
+ old_dlprefiles="$dlprefiles"
+ dlprefiles=
+ for lib in $old_dlprefiles; do
+ case "$dlprefiles " in
+ *" $lib "*) ;;
+ *) dlprefiles="$dlprefiles $lib" ;;
+ esac
+ done
+
+ if test "$build_libtool_libs" = yes; then
+ if test -n "$rpath"; then
+ case $host in
+ *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-os2* | *-*-beos* | *-cegcc*)
+ # these systems don't actually have a c library (as such)!
+ ;;
+ *-*-rhapsody* | *-*-darwin1.[012])
+ # Rhapsody C library is in the System framework
+ deplibs="$deplibs System.ltframework"
+ ;;
+ *-*-netbsd*)
+ # Don't link with libc until the a.out ld.so is fixed.
+ ;;
+ *-*-openbsd* | *-*-freebsd* | *-*-dragonfly*)
+ # Do not include libc due to us having libc/libc_r.
+ ;;
+ *-*-sco3.2v5* | *-*-sco5v6*)
+ # Causes problems with __ctype
+ ;;
+ *-*-sysv4.2uw2* | *-*-sysv5* | *-*-unixware* | *-*-OpenUNIX*)
+ # Compiler inserts libc in the correct place for threads to work
+ ;;
+ *)
+ # Add libc to deplibs on all other systems if necessary.
+ if test "$build_libtool_need_lc" = "yes"; then
+ deplibs="$deplibs -lc"
+ fi
+ ;;
+ esac
+ fi
+
+ # Transform deplibs into only deplibs that can be linked in shared.
+ name_save=$name
+ libname_save=$libname
+ release_save=$release
+ versuffix_save=$versuffix
+ major_save=$major
+ # I'm not sure if I'm treating the release correctly. I think
+ # release should show up in the -l (ie -lgmp5) so we don't want to
+ # add it in twice. Is that correct?
+ release=""
+ versuffix=""
+ major=""
+ newdeplibs=
+ droppeddeps=no
+ case $deplibs_check_method in
+ pass_all)
+ # Don't check for shared/static. Everything works.
+ # This might be a little naive. We might want to check
+ # whether the library exists or not. But this is on
+ # osf3 & osf4 and I'm not really sure... Just
+ # implementing what was already the behavior.
+ newdeplibs=$deplibs
+ ;;
+ test_compile)
+ # This code stresses the "libraries are programs" paradigm to its
+ # limits. Maybe even breaks it. We compile a program, linking it
+ # against the deplibs as a proxy for the library. Then we can check
+ # whether they linked in statically or dynamically with ldd.
+ $opt_dry_run || $RM conftest.c
+ cat > conftest.c <<EOF
+ int main() { return 0; }
+EOF
+ $opt_dry_run || $RM conftest
+ if $LTCC $LTCFLAGS -o conftest conftest.c $deplibs; then
+ ldd_output=`ldd conftest`
+ for i in $deplibs; do
+ case $i in
+ -l*)
+ func_stripname -l '' "$i"
+ name=$func_stripname_result
+ if test "X$allow_libtool_libs_with_static_runtimes" = "Xyes" ; then
+ case " $predeps $postdeps " in
+ *" $i "*)
+ newdeplibs="$newdeplibs $i"
+ i=""
+ ;;
+ esac
+ fi
+ if test -n "$i" ; then
+ libname=`eval "\\$ECHO \"$libname_spec\""`
+ deplib_matches=`eval "\\$ECHO \"$library_names_spec\""`
+ set dummy $deplib_matches; shift
+ deplib_match=$1
+ if test `expr "$ldd_output" : ".*$deplib_match"` -ne 0 ; then
+ newdeplibs="$newdeplibs $i"
+ else
+ droppeddeps=yes
+ $ECHO
+ $ECHO "*** Warning: dynamic linker does not accept needed library $i."
+ $ECHO "*** I have the capability to make that library automatically link in when"
+ $ECHO "*** you link to this library. But I can only do this if you have a"
+ $ECHO "*** shared version of the library, which I believe you do not have"
+ $ECHO "*** because a test_compile did reveal that the linker did not use it for"
+ $ECHO "*** its dynamic dependency list that programs get resolved with at runtime."
+ fi
+ fi
+ ;;
+ *)
+ newdeplibs="$newdeplibs $i"
+ ;;
+ esac
+ done
+ else
+ # Error occurred in the first compile. Let's try to salvage
+ # the situation: Compile a separate program for each library.
+ for i in $deplibs; do
+ case $i in
+ -l*)
+ func_stripname -l '' "$i"
+ name=$func_stripname_result
+ $opt_dry_run || $RM conftest
+ if $LTCC $LTCFLAGS -o conftest conftest.c $i; then
+ ldd_output=`ldd conftest`
+ if test "X$allow_libtool_libs_with_static_runtimes" = "Xyes" ; then
+ case " $predeps $postdeps " in
+ *" $i "*)
+ newdeplibs="$newdeplibs $i"
+ i=""
+ ;;
+ esac
+ fi
+ if test -n "$i" ; then
+ libname=`eval "\\$ECHO \"$libname_spec\""`
+ deplib_matches=`eval "\\$ECHO \"$library_names_spec\""`
+ set dummy $deplib_matches; shift
+ deplib_match=$1
+ if test `expr "$ldd_output" : ".*$deplib_match"` -ne 0 ; then
+ newdeplibs="$newdeplibs $i"
+ else
+ droppeddeps=yes
+ $ECHO
+ $ECHO "*** Warning: dynamic linker does not accept needed library $i."
+ $ECHO "*** I have the capability to make that library automatically link in when"
+ $ECHO "*** you link to this library. But I can only do this if you have a"
+ $ECHO "*** shared version of the library, which you do not appear to have"
+ $ECHO "*** because a test_compile did reveal that the linker did not use this one"
+ $ECHO "*** as a dynamic dependency that programs can get resolved with at runtime."
+ fi
+ fi
+ else
+ droppeddeps=yes
+ $ECHO
+ $ECHO "*** Warning! Library $i is needed by this library but I was not able to"
+ $ECHO "*** make it link in! You will probably need to install it or some"
+ $ECHO "*** library that it depends on before this library will be fully"
+ $ECHO "*** functional. Installing it before continuing would be even better."
+ fi
+ ;;
+ *)
+ newdeplibs="$newdeplibs $i"
+ ;;
+ esac
+ done
+ fi
+ ;;
+ file_magic*)
+ set dummy $deplibs_check_method; shift
+ file_magic_regex=`expr "$deplibs_check_method" : "$1 \(.*\)"`
+ for a_deplib in $deplibs; do
+ case $a_deplib in
+ -l*)
+ func_stripname -l '' "$a_deplib"
+ name=$func_stripname_result
+ if test "X$allow_libtool_libs_with_static_runtimes" = "Xyes" ; then
+ case " $predeps $postdeps " in
+ *" $a_deplib "*)
+ newdeplibs="$newdeplibs $a_deplib"
+ a_deplib=""
+ ;;
+ esac
+ fi
+ if test -n "$a_deplib" ; then
+ libname=`eval "\\$ECHO \"$libname_spec\""`
+ for i in $lib_search_path $sys_lib_search_path $shlib_search_path; do
+ potential_libs=`ls $i/$libname[.-]* 2>/dev/null`
+ for potent_lib in $potential_libs; do
+ # Follow soft links.
+ if ls -lLd "$potent_lib" 2>/dev/null |
+ $GREP " -> " >/dev/null; then
+ continue
+ fi
+ # The statement above tries to avoid entering an
+ # endless loop below, in case of cyclic links.
+ # We might still enter an endless loop, since a link
+ # loop can be closed while we follow links,
+ # but so what?
+ potlib="$potent_lib"
+ while test -h "$potlib" 2>/dev/null; do
+ potliblink=`ls -ld $potlib | ${SED} 's/.* -> //'`
+ case $potliblink in
+ [\\/]* | [A-Za-z]:[\\/]*) potlib="$potliblink";;
+ *) potlib=`$ECHO "X$potlib" | $Xsed -e 's,[^/]*$,,'`"$potliblink";;
+ esac
+ done
+ if eval $file_magic_cmd \"\$potlib\" 2>/dev/null |
+ $SED -e 10q |
+ $EGREP "$file_magic_regex" > /dev/null; then
+ newdeplibs="$newdeplibs $a_deplib"
+ a_deplib=""
+ break 2
+ fi
+ done
+ done
+ fi
+ if test -n "$a_deplib" ; then
+ droppeddeps=yes
+ $ECHO
+ $ECHO "*** Warning: linker path does not have real file for library $a_deplib."
+ $ECHO "*** I have the capability to make that library automatically link in when"
+ $ECHO "*** you link to this library. But I can only do this if you have a"
+ $ECHO "*** shared version of the library, which you do not appear to have"
+ $ECHO "*** because I did check the linker path looking for a file starting"
+ if test -z "$potlib" ; then
+ $ECHO "*** with $libname but no candidates were found. (...for file magic test)"
+ else
+ $ECHO "*** with $libname and none of the candidates passed a file format test"
+ $ECHO "*** using a file magic. Last file checked: $potlib"
+ fi
+ fi
+ ;;
+ *)
+ # Add a -L argument.
+ newdeplibs="$newdeplibs $a_deplib"
+ ;;
+ esac
+ done # Gone through all deplibs.
+ ;;
+ match_pattern*)
+ set dummy $deplibs_check_method; shift
+ match_pattern_regex=`expr "$deplibs_check_method" : "$1 \(.*\)"`
+ for a_deplib in $deplibs; do
+ case $a_deplib in
+ -l*)
+ func_stripname -l '' "$a_deplib"
+ name=$func_stripname_result
+ if test "X$allow_libtool_libs_with_static_runtimes" = "Xyes" ; then
+ case " $predeps $postdeps " in
+ *" $a_deplib "*)
+ newdeplibs="$newdeplibs $a_deplib"
+ a_deplib=""
+ ;;
+ esac
+ fi
+ if test -n "$a_deplib" ; then
+ libname=`eval "\\$ECHO \"$libname_spec\""`
+ for i in $lib_search_path $sys_lib_search_path $shlib_search_path; do
+ potential_libs=`ls $i/$libname[.-]* 2>/dev/null`
+ for potent_lib in $potential_libs; do
+ potlib="$potent_lib" # see symlink-check above in file_magic test
+ if eval "\$ECHO \"X$potent_lib\"" 2>/dev/null | $Xsed -e 10q | \
+ $EGREP "$match_pattern_regex" > /dev/null; then
+ newdeplibs="$newdeplibs $a_deplib"
+ a_deplib=""
+ break 2
+ fi
+ done
+ done
+ fi
+ if test -n "$a_deplib" ; then
+ droppeddeps=yes
+ $ECHO
+ $ECHO "*** Warning: linker path does not have real file for library $a_deplib."
+ $ECHO "*** I have the capability to make that library automatically link in when"
+ $ECHO "*** you link to this library. But I can only do this if you have a"
+ $ECHO "*** shared version of the library, which you do not appear to have"
+ $ECHO "*** because I did check the linker path looking for a file starting"
+ if test -z "$potlib" ; then
+ $ECHO "*** with $libname but no candidates were found. (...for regex pattern test)"
+ else
+ $ECHO "*** with $libname and none of the candidates passed a file format test"
+ $ECHO "*** using a regex pattern. Last file checked: $potlib"
+ fi
+ fi
+ ;;
+ *)
+ # Add a -L argument.
+ newdeplibs="$newdeplibs $a_deplib"
+ ;;
+ esac
+ done # Gone through all deplibs.
+ ;;
+ none | unknown | *)
+ newdeplibs=""
+ tmp_deplibs=`$ECHO "X $deplibs" | $Xsed \
+ -e 's/ -lc$//' -e 's/ -[LR][^ ]*//g'`
+ if test "X$allow_libtool_libs_with_static_runtimes" = "Xyes" ; then
+ for i in $predeps $postdeps ; do
+ # can't use Xsed below, because $i might contain '/'
+ tmp_deplibs=`$ECHO "X $tmp_deplibs" | $Xsed -e "s,$i,,"`
+ done
+ fi
+ if $ECHO "X $tmp_deplibs" | $Xsed -e 's/[ ]//g' |
+ $GREP . >/dev/null; then
+ $ECHO
+ if test "X$deplibs_check_method" = "Xnone"; then
+ $ECHO "*** Warning: inter-library dependencies are not supported in this platform."
+ else
+ $ECHO "*** Warning: inter-library dependencies are not known to be supported."
+ fi
+ $ECHO "*** All declared inter-library dependencies are being dropped."
+ droppeddeps=yes
+ fi
+ ;;
+ esac
+ versuffix=$versuffix_save
+ major=$major_save
+ release=$release_save
+ libname=$libname_save
+ name=$name_save
+
+ case $host in
+ *-*-rhapsody* | *-*-darwin1.[012])
+ # On Rhapsody replace the C library with the System framework
+ newdeplibs=`$ECHO "X $newdeplibs" | $Xsed -e 's/ -lc / System.ltframework /'`
+ ;;
+ esac
+
+ if test "$droppeddeps" = yes; then
+ if test "$module" = yes; then
+ $ECHO
+ $ECHO "*** Warning: libtool could not satisfy all declared inter-library"
+ $ECHO "*** dependencies of module $libname. Therefore, libtool will create"
+ $ECHO "*** a static module, that should work as long as the dlopening"
+ $ECHO "*** application is linked with the -dlopen flag."
+ if test -z "$global_symbol_pipe"; then
+ $ECHO
+ $ECHO "*** However, this would only work if libtool was able to extract symbol"
+ $ECHO "*** lists from a program, using \`nm' or equivalent, but libtool could"
+ $ECHO "*** not find such a program. So, this module is probably useless."
+ $ECHO "*** \`nm' from GNU binutils and a full rebuild may help."
+ fi
+ if test "$build_old_libs" = no; then
+ oldlibs="$output_objdir/$libname.$libext"
+ build_libtool_libs=module
+ build_old_libs=yes
+ else
+ build_libtool_libs=no
+ fi
+ else
+ $ECHO "*** The inter-library dependencies that have been dropped here will be"
+ $ECHO "*** automatically added whenever a program is linked with this library"
+ $ECHO "*** or is declared to -dlopen it."
+
+ if test "$allow_undefined" = no; then
+ $ECHO
+ $ECHO "*** Since this library must not contain undefined symbols,"
+ $ECHO "*** because either the platform does not support them or"
+ $ECHO "*** it was explicitly requested with -no-undefined,"
+ $ECHO "*** libtool will only create a static version of it."
+ if test "$build_old_libs" = no; then
+ oldlibs="$output_objdir/$libname.$libext"
+ build_libtool_libs=module
+ build_old_libs=yes
+ else
+ build_libtool_libs=no
+ fi
+ fi
+ fi
+ fi
+ # Done checking deplibs!
+ deplibs=$newdeplibs
+ fi
+ # Time to change all our "foo.ltframework" stuff back to "-framework foo"
+ case $host in
+ *-*-darwin*)
+ newdeplibs=`$ECHO "X $newdeplibs" | $Xsed -e 's% \([^ $]*\).ltframework% -framework \1%g'`
+ new_inherited_linker_flags=`$ECHO "X $new_inherited_linker_flags" | $Xsed -e 's% \([^ $]*\).ltframework% -framework \1%g'`
+ deplibs=`$ECHO "X $deplibs" | $Xsed -e 's% \([^ $]*\).ltframework% -framework \1%g'`
+ ;;
+ esac
+
+ # move library search paths that coincide with paths to not yet
+ # installed libraries to the beginning of the library search list
+ new_libs=
+ for path in $notinst_path; do
+ case " $new_libs " in
+ *" -L$path/$objdir "*) ;;
+ *)
+ case " $deplibs " in
+ *" -L$path/$objdir "*)
+ new_libs="$new_libs -L$path/$objdir" ;;
+ esac
+ ;;
+ esac
+ done
+ for deplib in $deplibs; do
+ case $deplib in
+ -L*)
+ case " $new_libs " in
+ *" $deplib "*) ;;
+ *) new_libs="$new_libs $deplib" ;;
+ esac
+ ;;
+ *) new_libs="$new_libs $deplib" ;;
+ esac
+ done
+ deplibs="$new_libs"
+
+ # All the library-specific variables (install_libdir is set above).
+ library_names=
+ old_library=
+ dlname=
+
+ # Test again, we may have decided not to build it any more
+ if test "$build_libtool_libs" = yes; then
+ if test "$hardcode_into_libs" = yes; then
+ # Hardcode the library paths
+ hardcode_libdirs=
+ dep_rpath=
+ rpath="$finalize_rpath"
+ test "$mode" != relink && rpath="$compile_rpath$rpath"
+ for libdir in $rpath; do
+ if test -n "$hardcode_libdir_flag_spec"; then
+ if test -n "$hardcode_libdir_separator"; then
+ if test -z "$hardcode_libdirs"; then
+ hardcode_libdirs="$libdir"
+ else
+ # Just accumulate the unique libdirs.
+ case $hardcode_libdir_separator$hardcode_libdirs$hardcode_libdir_separator in
+ *"$hardcode_libdir_separator$libdir$hardcode_libdir_separator"*)
+ ;;
+ *)
+ hardcode_libdirs="$hardcode_libdirs$hardcode_libdir_separator$libdir"
+ ;;
+ esac
+ fi
+ else
+ eval flag=\"$hardcode_libdir_flag_spec\"
+ dep_rpath="$dep_rpath $flag"
+ fi
+ elif test -n "$runpath_var"; then
+ case "$perm_rpath " in
+ *" $libdir "*) ;;
+ *) perm_rpath="$perm_rpath $libdir" ;;
+ esac
+ fi
+ done
+ # Substitute the hardcoded libdirs into the rpath.
+ if test -n "$hardcode_libdir_separator" &&
+ test -n "$hardcode_libdirs"; then
+ libdir="$hardcode_libdirs"
+ if test -n "$hardcode_libdir_flag_spec_ld"; then
+ eval dep_rpath=\"$hardcode_libdir_flag_spec_ld\"
+ else
+ eval dep_rpath=\"$hardcode_libdir_flag_spec\"
+ fi
+ fi
+ if test -n "$runpath_var" && test -n "$perm_rpath"; then
+ # We should set the runpath_var.
+ rpath=
+ for dir in $perm_rpath; do
+ rpath="$rpath$dir:"
+ done
+ eval "$runpath_var='$rpath\$$runpath_var'; export $runpath_var"
+ fi
+ test -n "$dep_rpath" && deplibs="$dep_rpath $deplibs"
+ fi
+
+ shlibpath="$finalize_shlibpath"
+ test "$mode" != relink && shlibpath="$compile_shlibpath$shlibpath"
+ if test -n "$shlibpath"; then
+ eval "$shlibpath_var='$shlibpath\$$shlibpath_var'; export $shlibpath_var"
+ fi
+
+ # Get the real and link names of the library.
+ eval shared_ext=\"$shrext_cmds\"
+ eval library_names=\"$library_names_spec\"
+ set dummy $library_names
+ shift
+ realname="$1"
+ shift
+
+ if test -n "$soname_spec"; then
+ eval soname=\"$soname_spec\"
+ else
+ soname="$realname"
+ fi
+ if test -z "$dlname"; then
+ dlname=$soname
+ fi
+
+ lib="$output_objdir/$realname"
+ linknames=
+ for link
+ do
+ linknames="$linknames $link"
+ done
+
+ # Use standard objects if they are pic
+ test -z "$pic_flag" && libobjs=`$ECHO "X$libobjs" | $SP2NL | $Xsed -e "$lo2o" | $NL2SP`
+ test "X$libobjs" = "X " && libobjs=
+
+ delfiles=
+ if test -n "$export_symbols" && test -n "$include_expsyms"; then
+ $opt_dry_run || cp "$export_symbols" "$output_objdir/$libname.uexp"
+ export_symbols="$output_objdir/$libname.uexp"
+ delfiles="$delfiles $export_symbols"
+ fi
+
+ orig_export_symbols=
+ case $host_os in
+ cygwin* | mingw* | cegcc*)
+ if test -n "$export_symbols" && test -z "$export_symbols_regex"; then
+ # exporting using user supplied symfile
+ if test "x`$SED 1q $export_symbols`" != xEXPORTS; then
+ # and it's NOT already a .def file. Must figure out
+ # which of the given symbols are data symbols and tag
+ # them as such. So, trigger use of export_symbols_cmds.
+ # export_symbols gets reassigned inside the "prepare
+ # the list of exported symbols" if statement, so the
+ # include_expsyms logic still works.
+ orig_export_symbols="$export_symbols"
+ export_symbols=
+ always_export_symbols=yes
+ fi
+ fi
+ ;;
+ esac
+
+ # Prepare the list of exported symbols
+ if test -z "$export_symbols"; then
+ if test "$always_export_symbols" = yes || test -n "$export_symbols_regex"; then
+ func_verbose "generating symbol list for \`$libname.la'"
+ export_symbols="$output_objdir/$libname.exp"
+ $opt_dry_run || $RM $export_symbols
+ cmds=$export_symbols_cmds
+ save_ifs="$IFS"; IFS='~'
+ for cmd in $cmds; do
+ IFS="$save_ifs"
+ eval cmd=\"$cmd\"
+ func_len " $cmd"
+ len=$func_len_result
+ if test "$len" -lt "$max_cmd_len" || test "$max_cmd_len" -le -1; then
+ func_show_eval "$cmd" 'exit $?'
+ skipped_export=false
+ else
+ # The command line is too long to execute in one step.
+ func_verbose "using reloadable object file for export list..."
+ skipped_export=:
+ # Break out early, otherwise skipped_export may be
+ # set to false by a later but shorter cmd.
+ break
+ fi
+ done
+ IFS="$save_ifs"
+ if test -n "$export_symbols_regex" && test "X$skipped_export" != "X:"; then
+ func_show_eval '$EGREP -e "$export_symbols_regex" "$export_symbols" > "${export_symbols}T"'
+ func_show_eval '$MV "${export_symbols}T" "$export_symbols"'
+ fi
+ fi
+ fi
+
+ if test -n "$export_symbols" && test -n "$include_expsyms"; then
+ tmp_export_symbols="$export_symbols"
+ test -n "$orig_export_symbols" && tmp_export_symbols="$orig_export_symbols"
+ $opt_dry_run || eval '$ECHO "X$include_expsyms" | $Xsed | $SP2NL >> "$tmp_export_symbols"'
+ fi
+
+ if test "X$skipped_export" != "X:" && test -n "$orig_export_symbols"; then
+ # The given exports_symbols file has to be filtered, so filter it.
+ func_verbose "filter symbol list for \`$libname.la' to tag DATA exports"
+ # FIXME: $output_objdir/$libname.filter potentially contains lots of
+ # 's' commands which not all seds can handle. GNU sed should be fine
+ # though. Also, the filter scales superlinearly with the number of
+ # global variables. join(1) would be nice here, but unfortunately
+ # isn't a blessed tool.
+ $opt_dry_run || $SED -e '/[ ,]DATA/!d;s,\(.*\)\([ \,].*\),s|^\1$|\1\2|,' < $export_symbols > $output_objdir/$libname.filter
+ delfiles="$delfiles $export_symbols $output_objdir/$libname.filter"
+ export_symbols=$output_objdir/$libname.def
+ $opt_dry_run || $SED -f $output_objdir/$libname.filter < $orig_export_symbols > $export_symbols
+ fi
+
+ tmp_deplibs=
+ for test_deplib in $deplibs; do
+ case " $convenience " in
+ *" $test_deplib "*) ;;
+ *)
+ tmp_deplibs="$tmp_deplibs $test_deplib"
+ ;;
+ esac
+ done
+ deplibs="$tmp_deplibs"
+
+ if test -n "$convenience"; then
+ if test -n "$whole_archive_flag_spec" &&
+ test "$compiler_needs_object" = yes &&
+ test -z "$libobjs"; then
+ # extract the archives, so we have objects to list.
+ # TODO: could optimize this to just extract one archive.
+ whole_archive_flag_spec=
+ fi
+ if test -n "$whole_archive_flag_spec"; then
+ save_libobjs=$libobjs
+ eval libobjs=\"\$libobjs $whole_archive_flag_spec\"
+ test "X$libobjs" = "X " && libobjs=
+ else
+ gentop="$output_objdir/${outputname}x"
+ generated="$generated $gentop"
+
+ func_extract_archives $gentop $convenience
+ libobjs="$libobjs $func_extract_archives_result"
+ test "X$libobjs" = "X " && libobjs=
+ fi
+ fi
+
+ if test "$thread_safe" = yes && test -n "$thread_safe_flag_spec"; then
+ eval flag=\"$thread_safe_flag_spec\"
+ linker_flags="$linker_flags $flag"
+ fi
+
+ # Make a backup of the uninstalled library when relinking
+ if test "$mode" = relink; then
+ $opt_dry_run || eval '(cd $output_objdir && $RM ${realname}U && $MV $realname ${realname}U)' || exit $?
+ fi
+
+ # Do each of the archive commands.
+ if test "$module" = yes && test -n "$module_cmds" ; then
+ if test -n "$export_symbols" && test -n "$module_expsym_cmds"; then
+ eval test_cmds=\"$module_expsym_cmds\"
+ cmds=$module_expsym_cmds
+ else
+ eval test_cmds=\"$module_cmds\"
+ cmds=$module_cmds
+ fi
+ else
+ if test -n "$export_symbols" && test -n "$archive_expsym_cmds"; then
+ eval test_cmds=\"$archive_expsym_cmds\"
+ cmds=$archive_expsym_cmds
+ else
+ eval test_cmds=\"$archive_cmds\"
+ cmds=$archive_cmds
+ fi
+ fi
+
+ if test "X$skipped_export" != "X:" &&
+ func_len " $test_cmds" &&
+ len=$func_len_result &&
+ test "$len" -lt "$max_cmd_len" || test "$max_cmd_len" -le -1; then
+ :
+ else
+ # The command line is too long to link in one step, link piecewise
+ # or, if using GNU ld and skipped_export is not :, use a linker
+ # script.
+
+ # Save the value of $output and $libobjs because we want to
+ # use them later. If we have whole_archive_flag_spec, we
+ # want to use save_libobjs as it was before
+ # whole_archive_flag_spec was expanded, because we can't
+ # assume the linker understands whole_archive_flag_spec.
+ # This may have to be revisited, in case too many
+ # convenience libraries get linked in and end up exceeding
+ # the spec.
+ if test -z "$convenience" || test -z "$whole_archive_flag_spec"; then
+ save_libobjs=$libobjs
+ fi
+ save_output=$output
+ output_la=`$ECHO "X$output" | $Xsed -e "$basename"`
+
+ # Clear the reloadable object creation command queue and
+ # initialize k to one.
+ test_cmds=
+ concat_cmds=
+ objlist=
+ last_robj=
+ k=1
+
+ if test -n "$save_libobjs" && test "X$skipped_export" != "X:" && test "$with_gnu_ld" = yes; then
+ output=${output_objdir}/${output_la}.lnkscript
+ func_verbose "creating GNU ld script: $output"
+ $ECHO 'INPUT (' > $output
+ for obj in $save_libobjs
+ do
+ $ECHO "$obj" >> $output
+ done
+ $ECHO ')' >> $output
+ delfiles="$delfiles $output"
+ elif test -n "$save_libobjs" && test "X$skipped_export" != "X:" && test "X$file_list_spec" != X; then
+ output=${output_objdir}/${output_la}.lnk
+ func_verbose "creating linker input file list: $output"
+ : > $output
+ set x $save_libobjs
+ shift
+ firstobj=
+ if test "$compiler_needs_object" = yes; then
+ firstobj="$1 "
+ shift
+ fi
+ for obj
+ do
+ $ECHO "$obj" >> $output
+ done
+ delfiles="$delfiles $output"
+ output=$firstobj\"$file_list_spec$output\"
+ else
+ if test -n "$save_libobjs"; then
+ func_verbose "creating reloadable object files..."
+ output=$output_objdir/$output_la-${k}.$objext
+ eval test_cmds=\"$reload_cmds\"
+ func_len " $test_cmds"
+ len0=$func_len_result
+ len=$len0
+
+ # Loop over the list of objects to be linked.
+ for obj in $save_libobjs
+ do
+ func_len " $obj"
+ func_arith $len + $func_len_result
+ len=$func_arith_result
+ if test "X$objlist" = X ||
+ test "$len" -lt "$max_cmd_len"; then
+ func_append objlist " $obj"
+ else
+ # The command $test_cmds is almost too long, add a
+ # command to the queue.
+ if test "$k" -eq 1 ; then
+ # The first file doesn't have a previous command to add.
+ eval concat_cmds=\"$reload_cmds $objlist $last_robj\"
+ else
+ # All subsequent reloadable object files will link in
+ # the last one created.
+ eval concat_cmds=\"\$concat_cmds~$reload_cmds $objlist $last_robj~\$RM $last_robj\"
+ fi
+ last_robj=$output_objdir/$output_la-${k}.$objext
+ func_arith $k + 1
+ k=$func_arith_result
+ output=$output_objdir/$output_la-${k}.$objext
+ objlist=$obj
+ func_len " $last_robj"
+ func_arith $len0 + $func_len_result
+ len=$func_arith_result
+ fi
+ done
+ # Handle the remaining objects by creating one last
+ # reloadable object file. All subsequent reloadable object
+ # files will link in the last one created.
+ test -z "$concat_cmds" || concat_cmds=$concat_cmds~
+ eval concat_cmds=\"\${concat_cmds}$reload_cmds $objlist $last_robj\"
+ if test -n "$last_robj"; then
+ eval concat_cmds=\"\${concat_cmds}~\$RM $last_robj\"
+ fi
+ delfiles="$delfiles $output"
+
+ else
+ output=
+ fi
+
+ if ${skipped_export-false}; then
+ func_verbose "generating symbol list for \`$libname.la'"
+ export_symbols="$output_objdir/$libname.exp"
+ $opt_dry_run || $RM $export_symbols
+ libobjs=$output
+ # Append the command to create the export file.
+ test -z "$concat_cmds" || concat_cmds=$concat_cmds~
+ eval concat_cmds=\"\$concat_cmds$export_symbols_cmds\"
+ if test -n "$last_robj"; then
+ eval concat_cmds=\"\$concat_cmds~\$RM $last_robj\"
+ fi
+ fi
+
+ test -n "$save_libobjs" &&
+ func_verbose "creating a temporary reloadable object file: $output"
+
+ # Loop through the commands generated above and execute them.
+ save_ifs="$IFS"; IFS='~'
+ for cmd in $concat_cmds; do
+ IFS="$save_ifs"
+ $opt_silent || {
+ func_quote_for_expand "$cmd"
+ eval "func_echo $func_quote_for_expand_result"
+ }
+ $opt_dry_run || eval "$cmd" || {
+ lt_exit=$?
+
+ # Restore the uninstalled library and exit
+ if test "$mode" = relink; then
+ ( cd "$output_objdir" && \
+ $RM "${realname}T" && \
+ $MV "${realname}U" "$realname" )
+ fi
+
+ exit $lt_exit
+ }
+ done
+ IFS="$save_ifs"
+
+ if test -n "$export_symbols_regex" && ${skipped_export-false}; then
+ func_show_eval '$EGREP -e "$export_symbols_regex" "$export_symbols" > "${export_symbols}T"'
+ func_show_eval '$MV "${export_symbols}T" "$export_symbols"'
+ fi
+ fi
+
+ if ${skipped_export-false}; then
+ if test -n "$export_symbols" && test -n "$include_expsyms"; then
+ tmp_export_symbols="$export_symbols"
+ test -n "$orig_export_symbols" && tmp_export_symbols="$orig_export_symbols"
+ $opt_dry_run || eval '$ECHO "X$include_expsyms" | $Xsed | $SP2NL >> "$tmp_export_symbols"'
+ fi
+
+ if test -n "$orig_export_symbols"; then
+ # The given exports_symbols file has to be filtered, so filter it.
+ func_verbose "filter symbol list for \`$libname.la' to tag DATA exports"
+ # FIXME: $output_objdir/$libname.filter potentially contains lots of
+ # 's' commands which not all seds can handle. GNU sed should be fine
+ # though. Also, the filter scales superlinearly with the number of
+ # global variables. join(1) would be nice here, but unfortunately
+ # isn't a blessed tool.
+ $opt_dry_run || $SED -e '/[ ,]DATA/!d;s,\(.*\)\([ \,].*\),s|^\1$|\1\2|,' < $export_symbols > $output_objdir/$libname.filter
+ delfiles="$delfiles $export_symbols $output_objdir/$libname.filter"
+ export_symbols=$output_objdir/$libname.def
+ $opt_dry_run || $SED -f $output_objdir/$libname.filter < $orig_export_symbols > $export_symbols
+ fi
+ fi
+
+ libobjs=$output
+ # Restore the value of output.
+ output=$save_output
+
+ if test -n "$convenience" && test -n "$whole_archive_flag_spec"; then
+ eval libobjs=\"\$libobjs $whole_archive_flag_spec\"
+ test "X$libobjs" = "X " && libobjs=
+ fi
+ # Expand the library linking commands again to reset the
+ # value of $libobjs for piecewise linking.
+
+ # Do each of the archive commands.
+ if test "$module" = yes && test -n "$module_cmds" ; then
+ if test -n "$export_symbols" && test -n "$module_expsym_cmds"; then
+ cmds=$module_expsym_cmds
+ else
+ cmds=$module_cmds
+ fi
+ else
+ if test -n "$export_symbols" && test -n "$archive_expsym_cmds"; then
+ cmds=$archive_expsym_cmds
+ else
+ cmds=$archive_cmds
+ fi
+ fi
+ fi
+
+ if test -n "$delfiles"; then
+ # Append the command to remove temporary files to $cmds.
+ eval cmds=\"\$cmds~\$RM $delfiles\"
+ fi
+
+ # Add any objects from preloaded convenience libraries
+ if test -n "$dlprefiles"; then
+ gentop="$output_objdir/${outputname}x"
+ generated="$generated $gentop"
+
+ func_extract_archives $gentop $dlprefiles
+ libobjs="$libobjs $func_extract_archives_result"
+ test "X$libobjs" = "X " && libobjs=
+ fi
+
+ save_ifs="$IFS"; IFS='~'
+ for cmd in $cmds; do
+ IFS="$save_ifs"
+ eval cmd=\"$cmd\"
+ $opt_silent || {
+ func_quote_for_expand "$cmd"
+ eval "func_echo $func_quote_for_expand_result"
+ }
+ $opt_dry_run || eval "$cmd" || {
+ lt_exit=$?
+
+ # Restore the uninstalled library and exit
+ if test "$mode" = relink; then
+ ( cd "$output_objdir" && \
+ $RM "${realname}T" && \
+ $MV "${realname}U" "$realname" )
+ fi
+
+ exit $lt_exit
+ }
+ done
+ IFS="$save_ifs"
+
+ # Restore the uninstalled library and exit
+ if test "$mode" = relink; then
+ $opt_dry_run || eval '(cd $output_objdir && $RM ${realname}T && $MV $realname ${realname}T && $MV ${realname}U $realname)' || exit $?
+
+ if test -n "$convenience"; then
+ if test -z "$whole_archive_flag_spec"; then
+ func_show_eval '${RM}r "$gentop"'
+ fi
+ fi
+
+ exit $EXIT_SUCCESS
+ fi
+
+ # Create links to the real library.
+ for linkname in $linknames; do
+ if test "$realname" != "$linkname"; then
+ func_show_eval '(cd "$output_objdir" && $RM "$linkname" && $LN_S "$realname" "$linkname")' 'exit $?'
+ fi
+ done
+
+ # If -module or -export-dynamic was specified, set the dlname.
+ if test "$module" = yes || test "$export_dynamic" = yes; then
+ # On all known operating systems, these are identical.
+ dlname="$soname"
+ fi
+ fi
+ ;;
+
+ obj)
+ if test -n "$dlfiles$dlprefiles" || test "$dlself" != no; then
+ func_warning "\`-dlopen' is ignored for objects"
+ fi
+
+ case " $deplibs" in
+ *\ -l* | *\ -L*)
+ func_warning "\`-l' and \`-L' are ignored for objects" ;;
+ esac
+
+ test -n "$rpath" && \
+ func_warning "\`-rpath' is ignored for objects"
+
+ test -n "$xrpath" && \
+ func_warning "\`-R' is ignored for objects"
+
+ test -n "$vinfo" && \
+ func_warning "\`-version-info' is ignored for objects"
+
+ test -n "$release" && \
+ func_warning "\`-release' is ignored for objects"
+
+ case $output in
+ *.lo)
+ test -n "$objs$old_deplibs" && \
+ func_fatal_error "cannot build library object \`$output' from non-libtool objects"
+
+ libobj=$output
+ func_lo2o "$libobj"
+ obj=$func_lo2o_result
+ ;;
+ *)
+ libobj=
+ obj="$output"
+ ;;
+ esac
+
+ # Delete the old objects.
+ $opt_dry_run || $RM $obj $libobj
+
+ # Objects from convenience libraries. This assumes
+ # single-version convenience libraries. Whenever we create
+ # different ones for PIC/non-PIC, this we'll have to duplicate
+ # the extraction.
+ reload_conv_objs=
+ gentop=
+ # reload_cmds runs $LD directly, so let us get rid of
+ # -Wl from whole_archive_flag_spec and hope we can get by with
+ # turning comma into space..
+ wl=
+
+ if test -n "$convenience"; then
+ if test -n "$whole_archive_flag_spec"; then
+ eval tmp_whole_archive_flags=\"$whole_archive_flag_spec\"
+ reload_conv_objs=$reload_objs\ `$ECHO "X$tmp_whole_archive_flags" | $Xsed -e 's|,| |g'`
+ else
+ gentop="$output_objdir/${obj}x"
+ generated="$generated $gentop"
+
+ func_extract_archives $gentop $convenience
+ reload_conv_objs="$reload_objs $func_extract_archives_result"
+ fi
+ fi
+
+ # Create the old-style object.
+ reload_objs="$objs$old_deplibs "`$ECHO "X$libobjs" | $SP2NL | $Xsed -e '/\.'${libext}$'/d' -e '/\.lib$/d' -e "$lo2o" | $NL2SP`" $reload_conv_objs" ### testsuite: skip nested quoting test
+
+ output="$obj"
+ func_execute_cmds "$reload_cmds" 'exit $?'
+
+ # Exit if we aren't doing a library object file.
+ if test -z "$libobj"; then
+ if test -n "$gentop"; then
+ func_show_eval '${RM}r "$gentop"'
+ fi
+
+ exit $EXIT_SUCCESS
+ fi
+
+ if test "$build_libtool_libs" != yes; then
+ if test -n "$gentop"; then
+ func_show_eval '${RM}r "$gentop"'
+ fi
+
+ # Create an invalid libtool object if no PIC, so that we don't
+ # accidentally link it into a program.
+ # $show "echo timestamp > $libobj"
+ # $opt_dry_run || eval "echo timestamp > $libobj" || exit $?
+ exit $EXIT_SUCCESS
+ fi
+
+ if test -n "$pic_flag" || test "$pic_mode" != default; then
+ # Only do commands if we really have different PIC objects.
+ reload_objs="$libobjs $reload_conv_objs"
+ output="$libobj"
+ func_execute_cmds "$reload_cmds" 'exit $?'
+ fi
+
+ if test -n "$gentop"; then
+ func_show_eval '${RM}r "$gentop"'
+ fi
+
+ exit $EXIT_SUCCESS
+ ;;
+
+ prog)
+ case $host in
+ *cygwin*) func_stripname '' '.exe' "$output"
+ output=$func_stripname_result.exe;;
+ esac
+ test -n "$vinfo" && \
+ func_warning "\`-version-info' is ignored for programs"
+
+ test -n "$release" && \
+ func_warning "\`-release' is ignored for programs"
+
+ test "$preload" = yes \
+ && test "$dlopen_support" = unknown \
+ && test "$dlopen_self" = unknown \
+ && test "$dlopen_self_static" = unknown && \
+ func_warning "\`LT_INIT([dlopen])' not used. Assuming no dlopen support."
+
+ case $host in
+ *-*-rhapsody* | *-*-darwin1.[012])
+ # On Rhapsody replace the C library is the System framework
+ compile_deplibs=`$ECHO "X $compile_deplibs" | $Xsed -e 's/ -lc / System.ltframework /'`
+ finalize_deplibs=`$ECHO "X $finalize_deplibs" | $Xsed -e 's/ -lc / System.ltframework /'`
+ ;;
+ esac
+
+ case $host in
+ *-*-darwin*)
+ # Don't allow lazy linking, it breaks C++ global constructors
+ # But is supposedly fixed on 10.4 or later (yay!).
+ if test "$tagname" = CXX ; then
+ case ${MACOSX_DEPLOYMENT_TARGET-10.0} in
+ 10.[0123])
+ compile_command="$compile_command ${wl}-bind_at_load"
+ finalize_command="$finalize_command ${wl}-bind_at_load"
+ ;;
+ esac
+ fi
+ # Time to change all our "foo.ltframework" stuff back to "-framework foo"
+ compile_deplibs=`$ECHO "X $compile_deplibs" | $Xsed -e 's% \([^ $]*\).ltframework% -framework \1%g'`
+ finalize_deplibs=`$ECHO "X $finalize_deplibs" | $Xsed -e 's% \([^ $]*\).ltframework% -framework \1%g'`
+ ;;
+ esac
+
+
+ # move library search paths that coincide with paths to not yet
+ # installed libraries to the beginning of the library search list
+ new_libs=
+ for path in $notinst_path; do
+ case " $new_libs " in
+ *" -L$path/$objdir "*) ;;
+ *)
+ case " $compile_deplibs " in
+ *" -L$path/$objdir "*)
+ new_libs="$new_libs -L$path/$objdir" ;;
+ esac
+ ;;
+ esac
+ done
+ for deplib in $compile_deplibs; do
+ case $deplib in
+ -L*)
+ case " $new_libs " in
+ *" $deplib "*) ;;
+ *) new_libs="$new_libs $deplib" ;;
+ esac
+ ;;
+ *) new_libs="$new_libs $deplib" ;;
+ esac
+ done
+ compile_deplibs="$new_libs"
+
+
+ compile_command="$compile_command $compile_deplibs"
+ finalize_command="$finalize_command $finalize_deplibs"
+
+ if test -n "$rpath$xrpath"; then
+ # If the user specified any rpath flags, then add them.
+ for libdir in $rpath $xrpath; do
+ # This is the magic to use -rpath.
+ case "$finalize_rpath " in
+ *" $libdir "*) ;;
+ *) finalize_rpath="$finalize_rpath $libdir" ;;
+ esac
+ done
+ fi
+
+ # Now hardcode the library paths
+ rpath=
+ hardcode_libdirs=
+ for libdir in $compile_rpath $finalize_rpath; do
+ if test -n "$hardcode_libdir_flag_spec"; then
+ if test -n "$hardcode_libdir_separator"; then
+ if test -z "$hardcode_libdirs"; then
+ hardcode_libdirs="$libdir"
+ else
+ # Just accumulate the unique libdirs.
+ case $hardcode_libdir_separator$hardcode_libdirs$hardcode_libdir_separator in
+ *"$hardcode_libdir_separator$libdir$hardcode_libdir_separator"*)
+ ;;
+ *)
+ hardcode_libdirs="$hardcode_libdirs$hardcode_libdir_separator$libdir"
+ ;;
+ esac
+ fi
+ else
+ eval flag=\"$hardcode_libdir_flag_spec\"
+ rpath="$rpath $flag"
+ fi
+ elif test -n "$runpath_var"; then
+ case "$perm_rpath " in
+ *" $libdir "*) ;;
+ *) perm_rpath="$perm_rpath $libdir" ;;
+ esac
+ fi
+ case $host in
+ *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-os2* | *-cegcc*)
+ testbindir=`${ECHO} "$libdir" | ${SED} -e 's*/lib$*/bin*'`
+ case :$dllsearchpath: in
+ *":$libdir:"*) ;;
+ ::) dllsearchpath=$libdir;;
+ *) dllsearchpath="$dllsearchpath:$libdir";;
+ esac
+ case :$dllsearchpath: in
+ *":$testbindir:"*) ;;
+ ::) dllsearchpath=$testbindir;;
+ *) dllsearchpath="$dllsearchpath:$testbindir";;
+ esac
+ ;;
+ esac
+ done
+ # Substitute the hardcoded libdirs into the rpath.
+ if test -n "$hardcode_libdir_separator" &&
+ test -n "$hardcode_libdirs"; then
+ libdir="$hardcode_libdirs"
+ eval rpath=\" $hardcode_libdir_flag_spec\"
+ fi
+ compile_rpath="$rpath"
+
+ rpath=
+ hardcode_libdirs=
+ for libdir in $finalize_rpath; do
+ if test -n "$hardcode_libdir_flag_spec"; then
+ if test -n "$hardcode_libdir_separator"; then
+ if test -z "$hardcode_libdirs"; then
+ hardcode_libdirs="$libdir"
+ else
+ # Just accumulate the unique libdirs.
+ case $hardcode_libdir_separator$hardcode_libdirs$hardcode_libdir_separator in
+ *"$hardcode_libdir_separator$libdir$hardcode_libdir_separator"*)
+ ;;
+ *)
+ hardcode_libdirs="$hardcode_libdirs$hardcode_libdir_separator$libdir"
+ ;;
+ esac
+ fi
+ else
+ eval flag=\"$hardcode_libdir_flag_spec\"
+ rpath="$rpath $flag"
+ fi
+ elif test -n "$runpath_var"; then
+ case "$finalize_perm_rpath " in
+ *" $libdir "*) ;;
+ *) finalize_perm_rpath="$finalize_perm_rpath $libdir" ;;
+ esac
+ fi
+ done
+ # Substitute the hardcoded libdirs into the rpath.
+ if test -n "$hardcode_libdir_separator" &&
+ test -n "$hardcode_libdirs"; then
+ libdir="$hardcode_libdirs"
+ eval rpath=\" $hardcode_libdir_flag_spec\"
+ fi
+ finalize_rpath="$rpath"
+
+ if test -n "$libobjs" && test "$build_old_libs" = yes; then
+ # Transform all the library objects into standard objects.
+ compile_command=`$ECHO "X$compile_command" | $SP2NL | $Xsed -e "$lo2o" | $NL2SP`
+ finalize_command=`$ECHO "X$finalize_command" | $SP2NL | $Xsed -e "$lo2o" | $NL2SP`
+ fi
+
+ func_generate_dlsyms "$outputname" "@PROGRAM@" "no"
+
+ # template prelinking step
+ if test -n "$prelink_cmds"; then
+ func_execute_cmds "$prelink_cmds" 'exit $?'
+ fi
+
+ wrappers_required=yes
+ case $host in
+ *cygwin* | *mingw* )
+ if test "$build_libtool_libs" != yes; then
+ wrappers_required=no
+ fi
+ ;;
+ *cegcc)
+ # Disable wrappers for cegcc, we are cross compiling anyway.
+ wrappers_required=no
+ ;;
+ *)
+ if test "$need_relink" = no || test "$build_libtool_libs" != yes; then
+ wrappers_required=no
+ fi
+ ;;
+ esac
+ if test "$wrappers_required" = no; then
+ # Replace the output file specification.
+ compile_command=`$ECHO "X$compile_command" | $Xsed -e 's%@OUTPUT@%'"$output"'%g'`
+ link_command="$compile_command$compile_rpath"
+
+ # We have no uninstalled library dependencies, so finalize right now.
+ exit_status=0
+ func_show_eval "$link_command" 'exit_status=$?'
+
+ # Delete the generated files.
+ if test -f "$output_objdir/${outputname}S.${objext}"; then
+ func_show_eval '$RM "$output_objdir/${outputname}S.${objext}"'
+ fi
+
+ exit $exit_status
+ fi
+
+ if test -n "$compile_shlibpath$finalize_shlibpath"; then
+ compile_command="$shlibpath_var=\"$compile_shlibpath$finalize_shlibpath\$$shlibpath_var\" $compile_command"
+ fi
+ if test -n "$finalize_shlibpath"; then
+ finalize_command="$shlibpath_var=\"$finalize_shlibpath\$$shlibpath_var\" $finalize_command"
+ fi
+
+ compile_var=
+ finalize_var=
+ if test -n "$runpath_var"; then
+ if test -n "$perm_rpath"; then
+ # We should set the runpath_var.
+ rpath=
+ for dir in $perm_rpath; do
+ rpath="$rpath$dir:"
+ done
+ compile_var="$runpath_var=\"$rpath\$$runpath_var\" "
+ fi
+ if test -n "$finalize_perm_rpath"; then
+ # We should set the runpath_var.
+ rpath=
+ for dir in $finalize_perm_rpath; do
+ rpath="$rpath$dir:"
+ done
+ finalize_var="$runpath_var=\"$rpath\$$runpath_var\" "
+ fi
+ fi
+
+ if test "$no_install" = yes; then
+ # We don't need to create a wrapper script.
+ link_command="$compile_var$compile_command$compile_rpath"
+ # Replace the output file specification.
+ link_command=`$ECHO "X$link_command" | $Xsed -e 's%@OUTPUT@%'"$output"'%g'`
+ # Delete the old output file.
+ $opt_dry_run || $RM $output
+ # Link the executable and exit
+ func_show_eval "$link_command" 'exit $?'
+ exit $EXIT_SUCCESS
+ fi
+
+ if test "$hardcode_action" = relink; then
+ # Fast installation is not supported
+ link_command="$compile_var$compile_command$compile_rpath"
+ relink_command="$finalize_var$finalize_command$finalize_rpath"
+
+ func_warning "this platform does not like uninstalled shared libraries"
+ func_warning "\`$output' will be relinked during installation"
+ else
+ if test "$fast_install" != no; then
+ link_command="$finalize_var$compile_command$finalize_rpath"
+ if test "$fast_install" = yes; then
+ relink_command=`$ECHO "X$compile_var$compile_command$compile_rpath" | $Xsed -e 's%@OUTPUT@%\$progdir/\$file%g'`
+ else
+ # fast_install is set to needless
+ relink_command=
+ fi
+ else
+ link_command="$compile_var$compile_command$compile_rpath"
+ relink_command="$finalize_var$finalize_command$finalize_rpath"
+ fi
+ fi
+
+ # Replace the output file specification.
+ link_command=`$ECHO "X$link_command" | $Xsed -e 's%@OUTPUT@%'"$output_objdir/$outputname"'%g'`
+
+ # Delete the old output files.
+ $opt_dry_run || $RM $output $output_objdir/$outputname $output_objdir/lt-$outputname
+
+ func_show_eval "$link_command" 'exit $?'
+
+ # Now create the wrapper script.
+ func_verbose "creating $output"
+
+ # Quote the relink command for shipping.
+ if test -n "$relink_command"; then
+ # Preserve any variables that may affect compiler behavior
+ for var in $variables_saved_for_relink; do
+ if eval test -z \"\${$var+set}\"; then
+ relink_command="{ test -z \"\${$var+set}\" || $lt_unset $var || { $var=; export $var; }; }; $relink_command"
+ elif eval var_value=\$$var; test -z "$var_value"; then
+ relink_command="$var=; export $var; $relink_command"
+ else
+ func_quote_for_eval "$var_value"
+ relink_command="$var=$func_quote_for_eval_result; export $var; $relink_command"
+ fi
+ done
+ relink_command="(cd `pwd`; $relink_command)"
+ relink_command=`$ECHO "X$relink_command" | $Xsed -e "$sed_quote_subst"`
+ fi
+
+ # Quote $ECHO for shipping.
+ if test "X$ECHO" = "X$SHELL $progpath --fallback-echo"; then
+ case $progpath in
+ [\\/]* | [A-Za-z]:[\\/]*) qecho="$SHELL $progpath --fallback-echo";;
+ *) qecho="$SHELL `pwd`/$progpath --fallback-echo";;
+ esac
+ qecho=`$ECHO "X$qecho" | $Xsed -e "$sed_quote_subst"`
+ else
+ qecho=`$ECHO "X$ECHO" | $Xsed -e "$sed_quote_subst"`
+ fi
+
+ # Only actually do things if not in dry run mode.
+ $opt_dry_run || {
+ # win32 will think the script is a binary if it has
+ # a .exe suffix, so we strip it off here.
+ case $output in
+ *.exe) func_stripname '' '.exe' "$output"
+ output=$func_stripname_result ;;
+ esac
+ # test for cygwin because mv fails w/o .exe extensions
+ case $host in
+ *cygwin*)
+ exeext=.exe
+ func_stripname '' '.exe' "$outputname"
+ outputname=$func_stripname_result ;;
+ *) exeext= ;;
+ esac
+ case $host in
+ *cygwin* | *mingw* )
+ func_dirname_and_basename "$output" "" "."
+ output_name=$func_basename_result
+ output_path=$func_dirname_result
+ cwrappersource="$output_path/$objdir/lt-$output_name.c"
+ cwrapper="$output_path/$output_name.exe"
+ $RM $cwrappersource $cwrapper
+ trap "$RM $cwrappersource $cwrapper; exit $EXIT_FAILURE" 1 2 15
+
+ func_emit_cwrapperexe_src > $cwrappersource
+
+ # The wrapper executable is built using the $host compiler,
+ # because it contains $host paths and files. If cross-
+ # compiling, it, like the target executable, must be
+ # executed on the $host or under an emulation environment.
+ $opt_dry_run || {
+ $LTCC $LTCFLAGS -o $cwrapper $cwrappersource
+ $STRIP $cwrapper
+ }
+
+ # Now, create the wrapper script for func_source use:
+ func_ltwrapper_scriptname $cwrapper
+ $RM $func_ltwrapper_scriptname_result
+ trap "$RM $func_ltwrapper_scriptname_result; exit $EXIT_FAILURE" 1 2 15
+ $opt_dry_run || {
+ # note: this script will not be executed, so do not chmod.
+ if test "x$build" = "x$host" ; then
+ $cwrapper --lt-dump-script > $func_ltwrapper_scriptname_result
+ else
+ func_emit_wrapper no > $func_ltwrapper_scriptname_result
+ fi
+ }
+ ;;
+ * )
+ $RM $output
+ trap "$RM $output; exit $EXIT_FAILURE" 1 2 15
+
+ func_emit_wrapper no > $output
+ chmod +x $output
+ ;;
+ esac
+ }
+ exit $EXIT_SUCCESS
+ ;;
+ esac
+
+ # See if we need to build an old-fashioned archive.
+ for oldlib in $oldlibs; do
+
+ if test "$build_libtool_libs" = convenience; then
+ oldobjs="$libobjs_save $symfileobj"
+ addlibs="$convenience"
+ build_libtool_libs=no
+ else
+ if test "$build_libtool_libs" = module; then
+ oldobjs="$libobjs_save"
+ build_libtool_libs=no
+ else
+ oldobjs="$old_deplibs $non_pic_objects"
+ if test "$preload" = yes && test -f "$symfileobj"; then
+ oldobjs="$oldobjs $symfileobj"
+ fi
+ fi
+ addlibs="$old_convenience"
+ fi
+
+ if test -n "$addlibs"; then
+ gentop="$output_objdir/${outputname}x"
+ generated="$generated $gentop"
+
+ func_extract_archives $gentop $addlibs
+ oldobjs="$oldobjs $func_extract_archives_result"
+ fi
+
+ # Do each command in the archive commands.
+ if test -n "$old_archive_from_new_cmds" && test "$build_libtool_libs" = yes; then
+ cmds=$old_archive_from_new_cmds
+ else
+
+ # Add any objects from preloaded convenience libraries
+ if test -n "$dlprefiles"; then
+ gentop="$output_objdir/${outputname}x"
+ generated="$generated $gentop"
+
+ func_extract_archives $gentop $dlprefiles
+ oldobjs="$oldobjs $func_extract_archives_result"
+ fi
+
+ # POSIX demands no paths to be encoded in archives. We have
+ # to avoid creating archives with duplicate basenames if we
+ # might have to extract them afterwards, e.g., when creating a
+ # static archive out of a convenience library, or when linking
+ # the entirety of a libtool archive into another (currently
+ # not supported by libtool).
+ if (for obj in $oldobjs
+ do
+ func_basename "$obj"
+ $ECHO "$func_basename_result"
+ done | sort | sort -uc >/dev/null 2>&1); then
+ :
+ else
+ $ECHO "copying selected object files to avoid basename conflicts..."
+ gentop="$output_objdir/${outputname}x"
+ generated="$generated $gentop"
+ func_mkdir_p "$gentop"
+ save_oldobjs=$oldobjs
+ oldobjs=
+ counter=1
+ for obj in $save_oldobjs
+ do
+ func_basename "$obj"
+ objbase="$func_basename_result"
+ case " $oldobjs " in
+ " ") oldobjs=$obj ;;
+ *[\ /]"$objbase "*)
+ while :; do
+ # Make sure we don't pick an alternate name that also
+ # overlaps.
+ newobj=lt$counter-$objbase
+ func_arith $counter + 1
+ counter=$func_arith_result
+ case " $oldobjs " in
+ *[\ /]"$newobj "*) ;;
+ *) if test ! -f "$gentop/$newobj"; then break; fi ;;
+ esac
+ done
+ func_show_eval "ln $obj $gentop/$newobj || cp $obj $gentop/$newobj"
+ oldobjs="$oldobjs $gentop/$newobj"
+ ;;
+ *) oldobjs="$oldobjs $obj" ;;
+ esac
+ done
+ fi
+ eval cmds=\"$old_archive_cmds\"
+
+ func_len " $cmds"
+ len=$func_len_result
+ if test "$len" -lt "$max_cmd_len" || test "$max_cmd_len" -le -1; then
+ cmds=$old_archive_cmds
+ else
+ # the command line is too long to link in one step, link in parts
+ func_verbose "using piecewise archive linking..."
+ save_RANLIB=$RANLIB
+ RANLIB=:
+ objlist=
+ concat_cmds=
+ save_oldobjs=$oldobjs
+ oldobjs=
+ # Is there a better way of finding the last object in the list?
+ for obj in $save_oldobjs
+ do
+ last_oldobj=$obj
+ done
+ eval test_cmds=\"$old_archive_cmds\"
+ func_len " $test_cmds"
+ len0=$func_len_result
+ len=$len0
+ for obj in $save_oldobjs
+ do
+ func_len " $obj"
+ func_arith $len + $func_len_result
+ len=$func_arith_result
+ func_append objlist " $obj"
+ if test "$len" -lt "$max_cmd_len"; then
+ :
+ else
+ # the above command should be used before it gets too long
+ oldobjs=$objlist
+ if test "$obj" = "$last_oldobj" ; then
+ RANLIB=$save_RANLIB
+ fi
+ test -z "$concat_cmds" || concat_cmds=$concat_cmds~
+ eval concat_cmds=\"\${concat_cmds}$old_archive_cmds\"
+ objlist=
+ len=$len0
+ fi
+ done
+ RANLIB=$save_RANLIB
+ oldobjs=$objlist
+ if test "X$oldobjs" = "X" ; then
+ eval cmds=\"\$concat_cmds\"
+ else
+ eval cmds=\"\$concat_cmds~\$old_archive_cmds\"
+ fi
+ fi
+ fi
+ func_execute_cmds "$cmds" 'exit $?'
+ done
+
+ test -n "$generated" && \
+ func_show_eval "${RM}r$generated"
+
+ # Now create the libtool archive.
+ case $output in
+ *.la)
+ old_library=
+ test "$build_old_libs" = yes && old_library="$libname.$libext"
+ func_verbose "creating $output"
+
+ # Preserve any variables that may affect compiler behavior
+ for var in $variables_saved_for_relink; do
+ if eval test -z \"\${$var+set}\"; then
+ relink_command="{ test -z \"\${$var+set}\" || $lt_unset $var || { $var=; export $var; }; }; $relink_command"
+ elif eval var_value=\$$var; test -z "$var_value"; then
+ relink_command="$var=; export $var; $relink_command"
+ else
+ func_quote_for_eval "$var_value"
+ relink_command="$var=$func_quote_for_eval_result; export $var; $relink_command"
+ fi
+ done
+ # Quote the link command for shipping.
+ relink_command="(cd `pwd`; $SHELL $progpath $preserve_args --mode=relink $libtool_args @inst_prefix_dir@)"
+ relink_command=`$ECHO "X$relink_command" | $Xsed -e "$sed_quote_subst"`
+ if test "$hardcode_automatic" = yes ; then
+ relink_command=
+ fi
+
+ # Only create the output if not a dry run.
+ $opt_dry_run || {
+ for installed in no yes; do
+ if test "$installed" = yes; then
+ if test -z "$install_libdir"; then
+ break
+ fi
+ output="$output_objdir/$outputname"i
+ # Replace all uninstalled libtool libraries with the installed ones
+ newdependency_libs=
+ for deplib in $dependency_libs; do
+ case $deplib in
+ *.la)
+ func_basename "$deplib"
+ name="$func_basename_result"
+ eval libdir=`${SED} -n -e 's/^libdir=\(.*\)$/\1/p' $deplib`
+ test -z "$libdir" && \
+ func_fatal_error "\`$deplib' is not a valid libtool archive"
+ newdependency_libs="$newdependency_libs $libdir/$name"
+ ;;
+ *) newdependency_libs="$newdependency_libs $deplib" ;;
+ esac
+ done
+ dependency_libs="$newdependency_libs"
+ newdlfiles=
+
+ for lib in $dlfiles; do
+ case $lib in
+ *.la)
+ func_basename "$lib"
+ name="$func_basename_result"
+ eval libdir=`${SED} -n -e 's/^libdir=\(.*\)$/\1/p' $lib`
+ test -z "$libdir" && \
+ func_fatal_error "\`$lib' is not a valid libtool archive"
+ newdlfiles="$newdlfiles $libdir/$name"
+ ;;
+ *) newdlfiles="$newdlfiles $lib" ;;
+ esac
+ done
+ dlfiles="$newdlfiles"
+ newdlprefiles=
+ for lib in $dlprefiles; do
+ case $lib in
+ *.la)
+ # Only pass preopened files to the pseudo-archive (for
+ # eventual linking with the app. that links it) if we
+ # didn't already link the preopened objects directly into
+ # the library:
+ func_basename "$lib"
+ name="$func_basename_result"
+ eval libdir=`${SED} -n -e 's/^libdir=\(.*\)$/\1/p' $lib`
+ test -z "$libdir" && \
+ func_fatal_error "\`$lib' is not a valid libtool archive"
+ newdlprefiles="$newdlprefiles $libdir/$name"
+ ;;
+ esac
+ done
+ dlprefiles="$newdlprefiles"
+ else
+ newdlfiles=
+ for lib in $dlfiles; do
+ case $lib in
+ [\\/]* | [A-Za-z]:[\\/]*) abs="$lib" ;;
+ *) abs=`pwd`"/$lib" ;;
+ esac
+ newdlfiles="$newdlfiles $abs"
+ done
+ dlfiles="$newdlfiles"
+ newdlprefiles=
+ for lib in $dlprefiles; do
+ case $lib in
+ [\\/]* | [A-Za-z]:[\\/]*) abs="$lib" ;;
+ *) abs=`pwd`"/$lib" ;;
+ esac
+ newdlprefiles="$newdlprefiles $abs"
+ done
+ dlprefiles="$newdlprefiles"
+ fi
+ $RM $output
+ # place dlname in correct position for cygwin
+ tdlname=$dlname
+ case $host,$output,$installed,$module,$dlname in
+ *cygwin*,*lai,yes,no,*.dll | *mingw*,*lai,yes,no,*.dll | *cegcc*,*lai,yes,no,*.dll) tdlname=../bin/$dlname ;;
+ esac
+ $ECHO > $output "\
+# $outputname - a libtool library file
+# Generated by $PROGRAM (GNU $PACKAGE$TIMESTAMP) $VERSION
+#
+# Please DO NOT delete this file!
+# It is necessary for linking the library.
+
+# The name that we can dlopen(3).
+dlname='$tdlname'
+
+# Names of this library.
+library_names='$library_names'
+
+# The name of the static archive.
+old_library='$old_library'
+
+# Linker flags that can not go in dependency_libs.
+inherited_linker_flags='$new_inherited_linker_flags'
+
+# Libraries that this one depends upon.
+dependency_libs='$dependency_libs'
+
+# Names of additional weak libraries provided by this library
+weak_library_names='$weak_libs'
+
+# Version information for $libname.
+current=$current
+age=$age
+revision=$revision
+
+# Is this an already installed library?
+installed=$installed
+
+# Should we warn about portability when linking against -modules?
+shouldnotlink=$module
+
+# Files to dlopen/dlpreopen
+dlopen='$dlfiles'
+dlpreopen='$dlprefiles'
+
+# Directory that this library needs to be installed in:
+libdir='$install_libdir'"
+ if test "$installed" = no && test "$need_relink" = yes; then
+ $ECHO >> $output "\
+relink_command=\"$relink_command\""
+ fi
+ done
+ }
+
+ # Do a symbolic link so that the libtool archive can be found in
+ # LD_LIBRARY_PATH before the program is installed.
+ func_show_eval '( cd "$output_objdir" && $RM "$outputname" && $LN_S "../$outputname" "$outputname" )' 'exit $?'
+ ;;
+ esac
+ exit $EXIT_SUCCESS
+}
+
+{ test "$mode" = link || test "$mode" = relink; } &&
+ func_mode_link ${1+"$@"}
+
+
+# func_mode_uninstall arg...
+func_mode_uninstall ()
+{
+ $opt_debug
+ RM="$nonopt"
+ files=
+ rmforce=
+ exit_status=0
+
+ # This variable tells wrapper scripts just to set variables rather
+ # than running their programs.
+ libtool_install_magic="$magic"
+
+ for arg
+ do
+ case $arg in
+ -f) RM="$RM $arg"; rmforce=yes ;;
+ -*) RM="$RM $arg" ;;
+ *) files="$files $arg" ;;
+ esac
+ done
+
+ test -z "$RM" && \
+ func_fatal_help "you must specify an RM program"
+
+ rmdirs=
+
+ origobjdir="$objdir"
+ for file in $files; do
+ func_dirname "$file" "" "."
+ dir="$func_dirname_result"
+ if test "X$dir" = X.; then
+ objdir="$origobjdir"
+ else
+ objdir="$dir/$origobjdir"
+ fi
+ func_basename "$file"
+ name="$func_basename_result"
+ test "$mode" = uninstall && objdir="$dir"
+
+ # Remember objdir for removal later, being careful to avoid duplicates
+ if test "$mode" = clean; then
+ case " $rmdirs " in
+ *" $objdir "*) ;;
+ *) rmdirs="$rmdirs $objdir" ;;
+ esac
+ fi
+
+ # Don't error if the file doesn't exist and rm -f was used.
+ if { test -L "$file"; } >/dev/null 2>&1 ||
+ { test -h "$file"; } >/dev/null 2>&1 ||
+ test -f "$file"; then
+ :
+ elif test -d "$file"; then
+ exit_status=1
+ continue
+ elif test "$rmforce" = yes; then
+ continue
+ fi
+
+ rmfiles="$file"
+
+ case $name in
+ *.la)
+ # Possibly a libtool archive, so verify it.
+ if func_lalib_p "$file"; then
+ func_source $dir/$name
+
+ # Delete the libtool libraries and symlinks.
+ for n in $library_names; do
+ rmfiles="$rmfiles $objdir/$n"
+ done
+ test -n "$old_library" && rmfiles="$rmfiles $objdir/$old_library"
+
+ case "$mode" in
+ clean)
+ case " $library_names " in
+ # " " in the beginning catches empty $dlname
+ *" $dlname "*) ;;
+ *) rmfiles="$rmfiles $objdir/$dlname" ;;
+ esac
+ test -n "$libdir" && rmfiles="$rmfiles $objdir/$name $objdir/${name}i"
+ ;;
+ uninstall)
+ if test -n "$library_names"; then
+ # Do each command in the postuninstall commands.
+ func_execute_cmds "$postuninstall_cmds" 'test "$rmforce" = yes || exit_status=1'
+ fi
+
+ if test -n "$old_library"; then
+ # Do each command in the old_postuninstall commands.
+ func_execute_cmds "$old_postuninstall_cmds" 'test "$rmforce" = yes || exit_status=1'
+ fi
+ # FIXME: should reinstall the best remaining shared library.
+ ;;
+ esac
+ fi
+ ;;
+
+ *.lo)
+ # Possibly a libtool object, so verify it.
+ if func_lalib_p "$file"; then
+
+ # Read the .lo file
+ func_source $dir/$name
+
+ # Add PIC object to the list of files to remove.
+ if test -n "$pic_object" &&
+ test "$pic_object" != none; then
+ rmfiles="$rmfiles $dir/$pic_object"
+ fi
+
+ # Add non-PIC object to the list of files to remove.
+ if test -n "$non_pic_object" &&
+ test "$non_pic_object" != none; then
+ rmfiles="$rmfiles $dir/$non_pic_object"
+ fi
+ fi
+ ;;
+
+ *)
+ if test "$mode" = clean ; then
+ noexename=$name
+ case $file in
+ *.exe)
+ func_stripname '' '.exe' "$file"
+ file=$func_stripname_result
+ func_stripname '' '.exe' "$name"
+ noexename=$func_stripname_result
+ # $file with .exe has already been added to rmfiles,
+ # add $file without .exe
+ rmfiles="$rmfiles $file"
+ ;;
+ esac
+ # Do a test to see if this is a libtool program.
+ if func_ltwrapper_p "$file"; then
+ if func_ltwrapper_executable_p "$file"; then
+ func_ltwrapper_scriptname "$file"
+ relink_command=
+ func_source $func_ltwrapper_scriptname_result
+ rmfiles="$rmfiles $func_ltwrapper_scriptname_result"
+ else
+ relink_command=
+ func_source $dir/$noexename
+ fi
+
+ # note $name still contains .exe if it was in $file originally
+ # as does the version of $file that was added into $rmfiles
+ rmfiles="$rmfiles $objdir/$name $objdir/${name}S.${objext}"
+ if test "$fast_install" = yes && test -n "$relink_command"; then
+ rmfiles="$rmfiles $objdir/lt-$name"
+ fi
+ if test "X$noexename" != "X$name" ; then
+ rmfiles="$rmfiles $objdir/lt-${noexename}.c"
+ fi
+ fi
+ fi
+ ;;
+ esac
+ func_show_eval "$RM $rmfiles" 'exit_status=1'
+ done
+ objdir="$origobjdir"
+
+ # Try to remove the ${objdir}s in the directories where we deleted files
+ for dir in $rmdirs; do
+ if test -d "$dir"; then
+ func_show_eval "rmdir $dir >/dev/null 2>&1"
+ fi
+ done
+
+ exit $exit_status
+}
+
+{ test "$mode" = uninstall || test "$mode" = clean; } &&
+ func_mode_uninstall ${1+"$@"}
+
+test -z "$mode" && {
+ help="$generic_help"
+ func_fatal_help "you must specify a MODE"
+}
+
+test -z "$exec_cmd" && \
+ func_fatal_help "invalid operation mode \`$mode'"
+
+if test -n "$exec_cmd"; then
+ eval exec "$exec_cmd"
+ exit $EXIT_FAILURE
+fi
+
+exit $exit_status
+
+
+# The TAGs below are defined such that we never get into a situation
+# in which we disable both kinds of libraries. Given conflicting
+# choices, we go for a static library, that is the most portable,
+# since we can't tell whether shared libraries were disabled because
+# the user asked for that or because the platform doesn't support
+# them. This is particularly important on AIX, because we don't
+# support having both static and shared libraries enabled at the same
+# time on that platform, so we default to a shared-only configuration.
+# If a disable-shared tag is given, we'll fallback to a static-only
+# configuration. But we'll never go from static-only to shared-only.
+
+# ### BEGIN LIBTOOL TAG CONFIG: disable-shared
+build_libtool_libs=no
+build_old_libs=yes
+# ### END LIBTOOL TAG CONFIG: disable-shared
+
+# ### BEGIN LIBTOOL TAG CONFIG: disable-static
+build_old_libs=`case $build_libtool_libs in yes) echo no;; *) echo yes;; esac`
+# ### END LIBTOOL TAG CONFIG: disable-static
+
+# Local Variables:
+# mode:shell-script
+# sh-indentation:2
+# End:
+# vi:sw=2
+
diff --git a/src/3rdparty/libpng/missing b/src/3rdparty/libpng/missing
new file mode 100755
index 0000000..28055d2
--- /dev/null
+++ b/src/3rdparty/libpng/missing
@@ -0,0 +1,376 @@
+#! /bin/sh
+# Common stub for a few missing GNU programs while installing.
+
+scriptversion=2009-04-28.21; # UTC
+
+# Copyright (C) 1996, 1997, 1999, 2000, 2002, 2003, 2004, 2005, 2006,
+# 2008, 2009 Free Software Foundation, Inc.
+# Originally by Fran,cois Pinard <pinard@iro.umontreal.ca>, 1996.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that program.
+
+if test $# -eq 0; then
+ echo 1>&2 "Try \`$0 --help' for more information"
+ exit 1
+fi
+
+run=:
+sed_output='s/.* --output[ =]\([^ ]*\).*/\1/p'
+sed_minuso='s/.* -o \([^ ]*\).*/\1/p'
+
+# In the cases where this matters, `missing' is being run in the
+# srcdir already.
+if test -f configure.ac; then
+ configure_ac=configure.ac
+else
+ configure_ac=configure.in
+fi
+
+msg="missing on your system"
+
+case $1 in
+--run)
+ # Try to run requested program, and just exit if it succeeds.
+ run=
+ shift
+ "$@" && exit 0
+ # Exit code 63 means version mismatch. This often happens
+ # when the user try to use an ancient version of a tool on
+ # a file that requires a minimum version. In this case we
+ # we should proceed has if the program had been absent, or
+ # if --run hadn't been passed.
+ if test $? = 63; then
+ run=:
+ msg="probably too old"
+ fi
+ ;;
+
+ -h|--h|--he|--hel|--help)
+ echo "\
+$0 [OPTION]... PROGRAM [ARGUMENT]...
+
+Handle \`PROGRAM [ARGUMENT]...' for when PROGRAM is missing, or return an
+error status if there is no known handling for PROGRAM.
+
+Options:
+ -h, --help display this help and exit
+ -v, --version output version information and exit
+ --run try to run the given command, and emulate it if it fails
+
+Supported PROGRAM values:
+ aclocal touch file \`aclocal.m4'
+ autoconf touch file \`configure'
+ autoheader touch file \`config.h.in'
+ autom4te touch the output file, or create a stub one
+ automake touch all \`Makefile.in' files
+ bison create \`y.tab.[ch]', if possible, from existing .[ch]
+ flex create \`lex.yy.c', if possible, from existing .c
+ help2man touch the output file
+ lex create \`lex.yy.c', if possible, from existing .c
+ makeinfo touch the output file
+ tar try tar, gnutar, gtar, then tar without non-portable flags
+ yacc create \`y.tab.[ch]', if possible, from existing .[ch]
+
+Version suffixes to PROGRAM as well as the prefixes \`gnu-', \`gnu', and
+\`g' are ignored when checking the name.
+
+Send bug reports to <bug-automake@gnu.org>."
+ exit $?
+ ;;
+
+ -v|--v|--ve|--ver|--vers|--versi|--versio|--version)
+ echo "missing $scriptversion (GNU Automake)"
+ exit $?
+ ;;
+
+ -*)
+ echo 1>&2 "$0: Unknown \`$1' option"
+ echo 1>&2 "Try \`$0 --help' for more information"
+ exit 1
+ ;;
+
+esac
+
+# normalize program name to check for.
+program=`echo "$1" | sed '
+ s/^gnu-//; t
+ s/^gnu//; t
+ s/^g//; t'`
+
+# Now exit if we have it, but it failed. Also exit now if we
+# don't have it and --version was passed (most likely to detect
+# the program). This is about non-GNU programs, so use $1 not
+# $program.
+case $1 in
+ lex*|yacc*)
+ # Not GNU programs, they don't have --version.
+ ;;
+
+ tar*)
+ if test -n "$run"; then
+ echo 1>&2 "ERROR: \`tar' requires --run"
+ exit 1
+ elif test "x$2" = "x--version" || test "x$2" = "x--help"; then
+ exit 1
+ fi
+ ;;
+
+ *)
+ if test -z "$run" && ($1 --version) > /dev/null 2>&1; then
+ # We have it, but it failed.
+ exit 1
+ elif test "x$2" = "x--version" || test "x$2" = "x--help"; then
+ # Could not run --version or --help. This is probably someone
+ # running `$TOOL --version' or `$TOOL --help' to check whether
+ # $TOOL exists and not knowing $TOOL uses missing.
+ exit 1
+ fi
+ ;;
+esac
+
+# If it does not exist, or fails to run (possibly an outdated version),
+# try to emulate it.
+case $program in
+ aclocal*)
+ echo 1>&2 "\
+WARNING: \`$1' is $msg. You should only need it if
+ you modified \`acinclude.m4' or \`${configure_ac}'. You might want
+ to install the \`Automake' and \`Perl' packages. Grab them from
+ any GNU archive site."
+ touch aclocal.m4
+ ;;
+
+ autoconf*)
+ echo 1>&2 "\
+WARNING: \`$1' is $msg. You should only need it if
+ you modified \`${configure_ac}'. You might want to install the
+ \`Autoconf' and \`GNU m4' packages. Grab them from any GNU
+ archive site."
+ touch configure
+ ;;
+
+ autoheader*)
+ echo 1>&2 "\
+WARNING: \`$1' is $msg. You should only need it if
+ you modified \`acconfig.h' or \`${configure_ac}'. You might want
+ to install the \`Autoconf' and \`GNU m4' packages. Grab them
+ from any GNU archive site."
+ files=`sed -n 's/^[ ]*A[CM]_CONFIG_HEADER(\([^)]*\)).*/\1/p' ${configure_ac}`
+ test -z "$files" && files="config.h"
+ touch_files=
+ for f in $files; do
+ case $f in
+ *:*) touch_files="$touch_files "`echo "$f" |
+ sed -e 's/^[^:]*://' -e 's/:.*//'`;;
+ *) touch_files="$touch_files $f.in";;
+ esac
+ done
+ touch $touch_files
+ ;;
+
+ automake*)
+ echo 1>&2 "\
+WARNING: \`$1' is $msg. You should only need it if
+ you modified \`Makefile.am', \`acinclude.m4' or \`${configure_ac}'.
+ You might want to install the \`Automake' and \`Perl' packages.
+ Grab them from any GNU archive site."
+ find . -type f -name Makefile.am -print |
+ sed 's/\.am$/.in/' |
+ while read f; do touch "$f"; done
+ ;;
+
+ autom4te*)
+ echo 1>&2 "\
+WARNING: \`$1' is needed, but is $msg.
+ You might have modified some files without having the
+ proper tools for further handling them.
+ You can get \`$1' as part of \`Autoconf' from any GNU
+ archive site."
+
+ file=`echo "$*" | sed -n "$sed_output"`
+ test -z "$file" && file=`echo "$*" | sed -n "$sed_minuso"`
+ if test -f "$file"; then
+ touch $file
+ else
+ test -z "$file" || exec >$file
+ echo "#! /bin/sh"
+ echo "# Created by GNU Automake missing as a replacement of"
+ echo "# $ $@"
+ echo "exit 0"
+ chmod +x $file
+ exit 1
+ fi
+ ;;
+
+ bison*|yacc*)
+ echo 1>&2 "\
+WARNING: \`$1' $msg. You should only need it if
+ you modified a \`.y' file. You may need the \`Bison' package
+ in order for those modifications to take effect. You can get
+ \`Bison' from any GNU archive site."
+ rm -f y.tab.c y.tab.h
+ if test $# -ne 1; then
+ eval LASTARG="\${$#}"
+ case $LASTARG in
+ *.y)
+ SRCFILE=`echo "$LASTARG" | sed 's/y$/c/'`
+ if test -f "$SRCFILE"; then
+ cp "$SRCFILE" y.tab.c
+ fi
+ SRCFILE=`echo "$LASTARG" | sed 's/y$/h/'`
+ if test -f "$SRCFILE"; then
+ cp "$SRCFILE" y.tab.h
+ fi
+ ;;
+ esac
+ fi
+ if test ! -f y.tab.h; then
+ echo >y.tab.h
+ fi
+ if test ! -f y.tab.c; then
+ echo 'main() { return 0; }' >y.tab.c
+ fi
+ ;;
+
+ lex*|flex*)
+ echo 1>&2 "\
+WARNING: \`$1' is $msg. You should only need it if
+ you modified a \`.l' file. You may need the \`Flex' package
+ in order for those modifications to take effect. You can get
+ \`Flex' from any GNU archive site."
+ rm -f lex.yy.c
+ if test $# -ne 1; then
+ eval LASTARG="\${$#}"
+ case $LASTARG in
+ *.l)
+ SRCFILE=`echo "$LASTARG" | sed 's/l$/c/'`
+ if test -f "$SRCFILE"; then
+ cp "$SRCFILE" lex.yy.c
+ fi
+ ;;
+ esac
+ fi
+ if test ! -f lex.yy.c; then
+ echo 'main() { return 0; }' >lex.yy.c
+ fi
+ ;;
+
+ help2man*)
+ echo 1>&2 "\
+WARNING: \`$1' is $msg. You should only need it if
+ you modified a dependency of a manual page. You may need the
+ \`Help2man' package in order for those modifications to take
+ effect. You can get \`Help2man' from any GNU archive site."
+
+ file=`echo "$*" | sed -n "$sed_output"`
+ test -z "$file" && file=`echo "$*" | sed -n "$sed_minuso"`
+ if test -f "$file"; then
+ touch $file
+ else
+ test -z "$file" || exec >$file
+ echo ".ab help2man is required to generate this page"
+ exit $?
+ fi
+ ;;
+
+ makeinfo*)
+ echo 1>&2 "\
+WARNING: \`$1' is $msg. You should only need it if
+ you modified a \`.texi' or \`.texinfo' file, or any other file
+ indirectly affecting the aspect of the manual. The spurious
+ call might also be the consequence of using a buggy \`make' (AIX,
+ DU, IRIX). You might want to install the \`Texinfo' package or
+ the \`GNU make' package. Grab either from any GNU archive site."
+ # The file to touch is that specified with -o ...
+ file=`echo "$*" | sed -n "$sed_output"`
+ test -z "$file" && file=`echo "$*" | sed -n "$sed_minuso"`
+ if test -z "$file"; then
+ # ... or it is the one specified with @setfilename ...
+ infile=`echo "$*" | sed 's/.* \([^ ]*\) *$/\1/'`
+ file=`sed -n '
+ /^@setfilename/{
+ s/.* \([^ ]*\) *$/\1/
+ p
+ q
+ }' $infile`
+ # ... or it is derived from the source name (dir/f.texi becomes f.info)
+ test -z "$file" && file=`echo "$infile" | sed 's,.*/,,;s,.[^.]*$,,'`.info
+ fi
+ # If the file does not exist, the user really needs makeinfo;
+ # let's fail without touching anything.
+ test -f $file || exit 1
+ touch $file
+ ;;
+
+ tar*)
+ shift
+
+ # We have already tried tar in the generic part.
+ # Look for gnutar/gtar before invocation to avoid ugly error
+ # messages.
+ if (gnutar --version > /dev/null 2>&1); then
+ gnutar "$@" && exit 0
+ fi
+ if (gtar --version > /dev/null 2>&1); then
+ gtar "$@" && exit 0
+ fi
+ firstarg="$1"
+ if shift; then
+ case $firstarg in
+ *o*)
+ firstarg=`echo "$firstarg" | sed s/o//`
+ tar "$firstarg" "$@" && exit 0
+ ;;
+ esac
+ case $firstarg in
+ *h*)
+ firstarg=`echo "$firstarg" | sed s/h//`
+ tar "$firstarg" "$@" && exit 0
+ ;;
+ esac
+ fi
+
+ echo 1>&2 "\
+WARNING: I can't seem to be able to run \`tar' with the given arguments.
+ You may want to install GNU tar or Free paxutils, or check the
+ command line arguments."
+ exit 1
+ ;;
+
+ *)
+ echo 1>&2 "\
+WARNING: \`$1' is needed, and is $msg.
+ You might have modified some files without having the
+ proper tools for further handling them. Check the \`README' file,
+ it often tells you about the needed prerequisites for installing
+ this package. You may also peek at any GNU archive site, in case
+ some other package would contain this missing \`$1' program."
+ exit 1
+ ;;
+esac
+
+exit 0
+
+# Local variables:
+# eval: (add-hook 'write-file-hooks 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-time-zone: "UTC"
+# time-stamp-end: "; # UTC"
+# End:
diff --git a/src/3rdparty/libpng/mkinstalldirs b/src/3rdparty/libpng/mkinstalldirs
new file mode 100755
index 0000000..4191a45
--- /dev/null
+++ b/src/3rdparty/libpng/mkinstalldirs
@@ -0,0 +1,162 @@
+#! /bin/sh
+# mkinstalldirs --- make directory hierarchy
+
+scriptversion=2009-04-28.21; # UTC
+
+# Original author: Noah Friedman <friedman@prep.ai.mit.edu>
+# Created: 1993-05-16
+# Public domain.
+#
+# This file is maintained in Automake, please report
+# bugs to <bug-automake@gnu.org> or send patches to
+# <automake-patches@gnu.org>.
+
+nl='
+'
+IFS=" "" $nl"
+errstatus=0
+dirmode=
+
+usage="\
+Usage: mkinstalldirs [-h] [--help] [--version] [-m MODE] DIR ...
+
+Create each directory DIR (with mode MODE, if specified), including all
+leading file name components.
+
+Report bugs to <bug-automake@gnu.org>."
+
+# process command line arguments
+while test $# -gt 0 ; do
+ case $1 in
+ -h | --help | --h*) # -h for help
+ echo "$usage"
+ exit $?
+ ;;
+ -m) # -m PERM arg
+ shift
+ test $# -eq 0 && { echo "$usage" 1>&2; exit 1; }
+ dirmode=$1
+ shift
+ ;;
+ --version)
+ echo "$0 $scriptversion"
+ exit $?
+ ;;
+ --) # stop option processing
+ shift
+ break
+ ;;
+ -*) # unknown option
+ echo "$usage" 1>&2
+ exit 1
+ ;;
+ *) # first non-opt arg
+ break
+ ;;
+ esac
+done
+
+for file
+do
+ if test -d "$file"; then
+ shift
+ else
+ break
+ fi
+done
+
+case $# in
+ 0) exit 0 ;;
+esac
+
+# Solaris 8's mkdir -p isn't thread-safe. If you mkdir -p a/b and
+# mkdir -p a/c at the same time, both will detect that a is missing,
+# one will create a, then the other will try to create a and die with
+# a "File exists" error. This is a problem when calling mkinstalldirs
+# from a parallel make. We use --version in the probe to restrict
+# ourselves to GNU mkdir, which is thread-safe.
+case $dirmode in
+ '')
+ if mkdir -p --version . >/dev/null 2>&1 && test ! -d ./--version; then
+ echo "mkdir -p -- $*"
+ exec mkdir -p -- "$@"
+ else
+ # On NextStep and OpenStep, the `mkdir' command does not
+ # recognize any option. It will interpret all options as
+ # directories to create, and then abort because `.' already
+ # exists.
+ test -d ./-p && rmdir ./-p
+ test -d ./--version && rmdir ./--version
+ fi
+ ;;
+ *)
+ if mkdir -m "$dirmode" -p --version . >/dev/null 2>&1 &&
+ test ! -d ./--version; then
+ echo "mkdir -m $dirmode -p -- $*"
+ exec mkdir -m "$dirmode" -p -- "$@"
+ else
+ # Clean up after NextStep and OpenStep mkdir.
+ for d in ./-m ./-p ./--version "./$dirmode";
+ do
+ test -d $d && rmdir $d
+ done
+ fi
+ ;;
+esac
+
+for file
+do
+ case $file in
+ /*) pathcomp=/ ;;
+ *) pathcomp= ;;
+ esac
+ oIFS=$IFS
+ IFS=/
+ set fnord $file
+ shift
+ IFS=$oIFS
+
+ for d
+ do
+ test "x$d" = x && continue
+
+ pathcomp=$pathcomp$d
+ case $pathcomp in
+ -*) pathcomp=./$pathcomp ;;
+ esac
+
+ if test ! -d "$pathcomp"; then
+ echo "mkdir $pathcomp"
+
+ mkdir "$pathcomp" || lasterr=$?
+
+ if test ! -d "$pathcomp"; then
+ errstatus=$lasterr
+ else
+ if test ! -z "$dirmode"; then
+ echo "chmod $dirmode $pathcomp"
+ lasterr=
+ chmod "$dirmode" "$pathcomp" || lasterr=$?
+
+ if test ! -z "$lasterr"; then
+ errstatus=$lasterr
+ fi
+ fi
+ fi
+ fi
+
+ pathcomp=$pathcomp/
+ done
+done
+
+exit $errstatus
+
+# Local Variables:
+# mode: shell-script
+# sh-indentation: 2
+# eval: (add-hook 'write-file-hooks 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-time-zone: "UTC"
+# time-stamp-end: "; # UTC"
+# End:
diff --git a/src/3rdparty/libpng/png.5 b/src/3rdparty/libpng/png.5
new file mode 100644
index 0000000..6f904a9
--- /dev/null
+++ b/src/3rdparty/libpng/png.5
@@ -0,0 +1,74 @@
+.TH PNG 5 "January 3, 2010"
+.SH NAME
+png \- Portable Network Graphics (PNG) format
+.SH DESCRIPTION
+PNG (Portable Network Graphics) is an extensible file format for the
+lossless, portable, well-compressed storage of raster images. PNG provides
+a patent-free replacement for GIF and can also replace many
+common uses of TIFF. Indexed-color, grayscale, and truecolor images are
+supported, plus an optional alpha channel. Sample depths range from
+1 to 16 bits.
+.br
+
+PNG is designed to work well in online viewing applications, such as the
+World Wide Web, so it is fully streamable with a progressive display
+option. PNG is robust, providing both full file integrity checking and
+fast, simple detection of common transmission errors. Also, PNG can store
+gamma and chromaticity data for improved color matching on heterogeneous
+platforms.
+
+.SH "SEE ALSO"
+.IR libpng(3), zlib(3), deflate(5), and zlib(5)
+.LP
+PNG specification (second edition), November 2003:
+.IP
+.br
+ <http://www.w3.org/TR/2003/REC-PNG-20031110/
+PNG 1.2 specification, July 1999:
+.IP
+.br
+http://www.libpng.org/pub/png
+.LP
+PNG 1.0 specification, October 1996:
+.IP
+.br
+RFC 2083
+.IP
+.br
+ftp://ds.internic.net/rfc/rfc2083.txt
+.br
+or (as a W3C Recommendation) at
+.br
+http://www.w3.org/TR/REC-png.html
+.SH AUTHORS
+This man page: Glenn Randers-Pehrson
+.LP
+Portable Network Graphics (PNG) Specification (Second Edition)
+Information technology - Computer graphics and image processing -
+Portable Network Graphics (PNG): Functional specification.
+ISO/IEC 15948:2003 (E) (November 10, 2003): David Duce and others.
+.LP
+Portable Network Graphics (PNG) Specification Version 1.2 (July 8, 1999):
+Glenn Randers-Pehrson and others (png-list).
+.LP
+Portable Network Graphics (PNG) Specification Version 1.0 (October 1, 1996):
+Thomas Boutell and others (png-list).
+.LP
+
+
+.SH COPYRIGHT NOTICE
+.LP
+This man page is Copyright (c) 1998-2006 Glenn Randers-Pehrson. See png.h
+for conditions of use and distribution.
+.LP
+The PNG Specification (Second Edition) is
+Copyright (c) 2003 W3C. (MIT, ERCIM, Keio), All Rights Reserved.
+.LP
+The PNG-1.2 specification is copyright (c) 1999 Glenn Randers-Pehrson.
+See the specification for conditions of use and distribution.
+.LP
+The PNG-1.0 specification is copyright (c) 1996 Massachusetts Institute of
+Technology. See the specification for conditions of use and distribution.
+.LP
+.\" end of man page
+
diff --git a/src/3rdparty/libpng/png.c b/src/3rdparty/libpng/png.c
new file mode 100644
index 0000000..a845a47
--- /dev/null
+++ b/src/3rdparty/libpng/png.c
@@ -0,0 +1,916 @@
+
+/* png.c - location for general purpose libpng functions
+ *
+ * Last changed in libpng 1.4.0 [January 3, 2010]
+ * Copyright (c) 1998-2010 Glenn Randers-Pehrson
+ * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
+ * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ */
+
+#define PNG_NO_EXTERN
+#define PNG_NO_PEDANTIC_WARNINGS
+#include "png.h"
+#include "pngpriv.h"
+
+/* Generate a compiler error if there is an old png.h in the search path. */
+typedef version_1_4_0 Your_png_h_is_not_version_1_4_0;
+
+/* Version information for C files. This had better match the version
+ * string defined in png.h.
+ */
+
+/* Tells libpng that we have already handled the first "num_bytes" bytes
+ * of the PNG file signature. If the PNG data is embedded into another
+ * stream we can set num_bytes = 8 so that libpng will not attempt to read
+ * or write any of the magic bytes before it starts on the IHDR.
+ */
+
+#ifdef PNG_READ_SUPPORTED
+void PNGAPI
+png_set_sig_bytes(png_structp png_ptr, int num_bytes)
+{
+ png_debug(1, "in png_set_sig_bytes");
+
+ if (png_ptr == NULL)
+ return;
+
+ if (num_bytes > 8)
+ png_error(png_ptr, "Too many bytes for PNG signature");
+
+ png_ptr->sig_bytes = (png_byte)(num_bytes < 0 ? 0 : num_bytes);
+}
+
+/* Checks whether the supplied bytes match the PNG signature. We allow
+ * checking less than the full 8-byte signature so that those apps that
+ * already read the first few bytes of a file to determine the file type
+ * can simply check the remaining bytes for extra assurance. Returns
+ * an integer less than, equal to, or greater than zero if sig is found,
+ * respectively, to be less than, to match, or be greater than the correct
+ * PNG signature (this is the same behaviour as strcmp, memcmp, etc).
+ */
+int PNGAPI
+png_sig_cmp(png_bytep sig, png_size_t start, png_size_t num_to_check)
+{
+ png_byte png_signature[8] = {137, 80, 78, 71, 13, 10, 26, 10};
+ if (num_to_check > 8)
+ num_to_check = 8;
+ else if (num_to_check < 1)
+ return (-1);
+
+ if (start > 7)
+ return (-1);
+
+ if (start + num_to_check > 8)
+ num_to_check = 8 - start;
+
+ return ((int)(png_memcmp(&sig[start], &png_signature[start], num_to_check)));
+}
+
+#endif /* PNG_READ_SUPPORTED */
+
+#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
+/* Function to allocate memory for zlib and clear it to 0. */
+voidpf /* PRIVATE */
+png_zalloc(voidpf png_ptr, uInt items, uInt size)
+{
+ png_voidp ptr;
+ png_structp p=(png_structp)png_ptr;
+ png_uint_32 save_flags=p->flags;
+ png_alloc_size_t num_bytes;
+
+ if (png_ptr == NULL)
+ return (NULL);
+ if (items > PNG_UINT_32_MAX/size)
+ {
+ png_warning (p, "Potential overflow in png_zalloc()");
+ return (NULL);
+ }
+ num_bytes = (png_alloc_size_t)items * size;
+
+ p->flags|=PNG_FLAG_MALLOC_NULL_MEM_OK;
+ ptr = (png_voidp)png_malloc((png_structp)png_ptr, num_bytes);
+ p->flags=save_flags;
+
+ return ((voidpf)ptr);
+}
+
+/* Function to free memory for zlib */
+void /* PRIVATE */
+png_zfree(voidpf png_ptr, voidpf ptr)
+{
+ png_free((png_structp)png_ptr, (png_voidp)ptr);
+}
+
+/* Reset the CRC variable to 32 bits of 1's. Care must be taken
+ * in case CRC is > 32 bits to leave the top bits 0.
+ */
+void /* PRIVATE */
+png_reset_crc(png_structp png_ptr)
+{
+ png_ptr->crc = crc32(0, Z_NULL, 0);
+}
+
+/* Calculate the CRC over a section of data. We can only pass as
+ * much data to this routine as the largest single buffer size. We
+ * also check that this data will actually be used before going to the
+ * trouble of calculating it.
+ */
+void /* PRIVATE */
+png_calculate_crc(png_structp png_ptr, png_bytep ptr, png_size_t length)
+{
+ int need_crc = 1;
+
+ if (png_ptr->chunk_name[0] & 0x20) /* ancillary */
+ {
+ if ((png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_MASK) ==
+ (PNG_FLAG_CRC_ANCILLARY_USE | PNG_FLAG_CRC_ANCILLARY_NOWARN))
+ need_crc = 0;
+ }
+ else /* critical */
+ {
+ if (png_ptr->flags & PNG_FLAG_CRC_CRITICAL_IGNORE)
+ need_crc = 0;
+ }
+
+ if (need_crc)
+ png_ptr->crc = crc32(png_ptr->crc, ptr, (uInt)length);
+}
+
+/* Allocate the memory for an info_struct for the application. We don't
+ * really need the png_ptr, but it could potentially be useful in the
+ * future. This should be used in favour of malloc(png_sizeof(png_info))
+ * and png_info_init() so that applications that want to use a shared
+ * libpng don't have to be recompiled if png_info changes size.
+ */
+png_infop PNGAPI
+png_create_info_struct(png_structp png_ptr)
+{
+ png_infop info_ptr;
+
+ png_debug(1, "in png_create_info_struct");
+
+ if (png_ptr == NULL)
+ return (NULL);
+
+#ifdef PNG_USER_MEM_SUPPORTED
+ info_ptr = (png_infop)png_create_struct_2(PNG_STRUCT_INFO,
+ png_ptr->malloc_fn, png_ptr->mem_ptr);
+#else
+ info_ptr = (png_infop)png_create_struct(PNG_STRUCT_INFO);
+#endif
+ if (info_ptr != NULL)
+ png_info_init_3(&info_ptr, png_sizeof(png_info));
+
+ return (info_ptr);
+}
+
+/* This function frees the memory associated with a single info struct.
+ * Normally, one would use either png_destroy_read_struct() or
+ * png_destroy_write_struct() to free an info struct, but this may be
+ * useful for some applications.
+ */
+void PNGAPI
+png_destroy_info_struct(png_structp png_ptr, png_infopp info_ptr_ptr)
+{
+ png_infop info_ptr = NULL;
+
+ png_debug(1, "in png_destroy_info_struct");
+
+ if (png_ptr == NULL)
+ return;
+
+ if (info_ptr_ptr != NULL)
+ info_ptr = *info_ptr_ptr;
+
+ if (info_ptr != NULL)
+ {
+ png_info_destroy(png_ptr, info_ptr);
+
+#ifdef PNG_USER_MEM_SUPPORTED
+ png_destroy_struct_2((png_voidp)info_ptr, png_ptr->free_fn,
+ png_ptr->mem_ptr);
+#else
+ png_destroy_struct((png_voidp)info_ptr);
+#endif
+ *info_ptr_ptr = NULL;
+ }
+}
+
+/* Initialize the info structure. This is now an internal function (0.89)
+ * and applications using it are urged to use png_create_info_struct()
+ * instead.
+ */
+
+void PNGAPI
+png_info_init_3(png_infopp ptr_ptr, png_size_t png_info_struct_size)
+{
+ png_infop info_ptr = *ptr_ptr;
+
+ png_debug(1, "in png_info_init_3");
+
+ if (info_ptr == NULL)
+ return;
+
+ if (png_sizeof(png_info) > png_info_struct_size)
+ {
+ png_destroy_struct(info_ptr);
+ info_ptr = (png_infop)png_create_struct(PNG_STRUCT_INFO);
+ *ptr_ptr = info_ptr;
+ }
+
+ /* Set everything to 0 */
+ png_memset(info_ptr, 0, png_sizeof(png_info));
+}
+
+void PNGAPI
+png_data_freer(png_structp png_ptr, png_infop info_ptr,
+ int freer, png_uint_32 mask)
+{
+ png_debug(1, "in png_data_freer");
+
+ if (png_ptr == NULL || info_ptr == NULL)
+ return;
+
+ if (freer == PNG_DESTROY_WILL_FREE_DATA)
+ info_ptr->free_me |= mask;
+ else if (freer == PNG_USER_WILL_FREE_DATA)
+ info_ptr->free_me &= ~mask;
+ else
+ png_warning(png_ptr,
+ "Unknown freer parameter in png_data_freer");
+}
+
+void PNGAPI
+png_free_data(png_structp png_ptr, png_infop info_ptr, png_uint_32 mask,
+ int num)
+{
+ png_debug(1, "in png_free_data");
+
+ if (png_ptr == NULL || info_ptr == NULL)
+ return;
+
+#ifdef PNG_TEXT_SUPPORTED
+ /* Free text item num or (if num == -1) all text items */
+ if ((mask & PNG_FREE_TEXT) & info_ptr->free_me)
+ {
+ if (num != -1)
+ {
+ if (info_ptr->text && info_ptr->text[num].key)
+ {
+ png_free(png_ptr, info_ptr->text[num].key);
+ info_ptr->text[num].key = NULL;
+ }
+ }
+ else
+ {
+ int i;
+ for (i = 0; i < info_ptr->num_text; i++)
+ png_free_data(png_ptr, info_ptr, PNG_FREE_TEXT, i);
+ png_free(png_ptr, info_ptr->text);
+ info_ptr->text = NULL;
+ info_ptr->num_text=0;
+ }
+ }
+#endif
+
+#ifdef PNG_tRNS_SUPPORTED
+ /* Free any tRNS entry */
+ if ((mask & PNG_FREE_TRNS) & info_ptr->free_me)
+ {
+ png_free(png_ptr, info_ptr->trans_alpha);
+ info_ptr->trans_alpha = NULL;
+ info_ptr->valid &= ~PNG_INFO_tRNS;
+ }
+#endif
+
+#ifdef PNG_sCAL_SUPPORTED
+ /* Free any sCAL entry */
+ if ((mask & PNG_FREE_SCAL) & info_ptr->free_me)
+ {
+#if defined(PNG_FIXED_POINT_SUPPORTED) && !defined(PNG_FLOATING_POINT_SUPPORTED)
+ png_free(png_ptr, info_ptr->scal_s_width);
+ png_free(png_ptr, info_ptr->scal_s_height);
+ info_ptr->scal_s_width = NULL;
+ info_ptr->scal_s_height = NULL;
+#endif
+ info_ptr->valid &= ~PNG_INFO_sCAL;
+ }
+#endif
+
+#ifdef PNG_pCAL_SUPPORTED
+ /* Free any pCAL entry */
+ if ((mask & PNG_FREE_PCAL) & info_ptr->free_me)
+ {
+ png_free(png_ptr, info_ptr->pcal_purpose);
+ png_free(png_ptr, info_ptr->pcal_units);
+ info_ptr->pcal_purpose = NULL;
+ info_ptr->pcal_units = NULL;
+ if (info_ptr->pcal_params != NULL)
+ {
+ int i;
+ for (i = 0; i < (int)info_ptr->pcal_nparams; i++)
+ {
+ png_free(png_ptr, info_ptr->pcal_params[i]);
+ info_ptr->pcal_params[i] = NULL;
+ }
+ png_free(png_ptr, info_ptr->pcal_params);
+ info_ptr->pcal_params = NULL;
+ }
+ info_ptr->valid &= ~PNG_INFO_pCAL;
+ }
+#endif
+
+#ifdef PNG_iCCP_SUPPORTED
+ /* Free any iCCP entry */
+ if ((mask & PNG_FREE_ICCP) & info_ptr->free_me)
+ {
+ png_free(png_ptr, info_ptr->iccp_name);
+ png_free(png_ptr, info_ptr->iccp_profile);
+ info_ptr->iccp_name = NULL;
+ info_ptr->iccp_profile = NULL;
+ info_ptr->valid &= ~PNG_INFO_iCCP;
+ }
+#endif
+
+#ifdef PNG_sPLT_SUPPORTED
+ /* Free a given sPLT entry, or (if num == -1) all sPLT entries */
+ if ((mask & PNG_FREE_SPLT) & info_ptr->free_me)
+ {
+ if (num != -1)
+ {
+ if (info_ptr->splt_palettes)
+ {
+ png_free(png_ptr, info_ptr->splt_palettes[num].name);
+ png_free(png_ptr, info_ptr->splt_palettes[num].entries);
+ info_ptr->splt_palettes[num].name = NULL;
+ info_ptr->splt_palettes[num].entries = NULL;
+ }
+ }
+ else
+ {
+ if (info_ptr->splt_palettes_num)
+ {
+ int i;
+ for (i = 0; i < (int)info_ptr->splt_palettes_num; i++)
+ png_free_data(png_ptr, info_ptr, PNG_FREE_SPLT, i);
+
+ png_free(png_ptr, info_ptr->splt_palettes);
+ info_ptr->splt_palettes = NULL;
+ info_ptr->splt_palettes_num = 0;
+ }
+ info_ptr->valid &= ~PNG_INFO_sPLT;
+ }
+ }
+#endif
+
+#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
+ if (png_ptr->unknown_chunk.data)
+ {
+ png_free(png_ptr, png_ptr->unknown_chunk.data);
+ png_ptr->unknown_chunk.data = NULL;
+ }
+
+ if ((mask & PNG_FREE_UNKN) & info_ptr->free_me)
+ {
+ if (num != -1)
+ {
+ if (info_ptr->unknown_chunks)
+ {
+ png_free(png_ptr, info_ptr->unknown_chunks[num].data);
+ info_ptr->unknown_chunks[num].data = NULL;
+ }
+ }
+ else
+ {
+ int i;
+
+ if (info_ptr->unknown_chunks_num)
+ {
+ for (i = 0; i < (int)info_ptr->unknown_chunks_num; i++)
+ png_free_data(png_ptr, info_ptr, PNG_FREE_UNKN, i);
+
+ png_free(png_ptr, info_ptr->unknown_chunks);
+ info_ptr->unknown_chunks = NULL;
+ info_ptr->unknown_chunks_num = 0;
+ }
+ }
+ }
+#endif
+
+#ifdef PNG_hIST_SUPPORTED
+ /* Free any hIST entry */
+ if ((mask & PNG_FREE_HIST) & info_ptr->free_me)
+ {
+ png_free(png_ptr, info_ptr->hist);
+ info_ptr->hist = NULL;
+ info_ptr->valid &= ~PNG_INFO_hIST;
+ }
+#endif
+
+ /* Free any PLTE entry that was internally allocated */
+ if ((mask & PNG_FREE_PLTE) & info_ptr->free_me)
+ {
+ png_zfree(png_ptr, info_ptr->palette);
+ info_ptr->palette = NULL;
+ info_ptr->valid &= ~PNG_INFO_PLTE;
+ info_ptr->num_palette = 0;
+ }
+
+#ifdef PNG_INFO_IMAGE_SUPPORTED
+ /* Free any image bits attached to the info structure */
+ if ((mask & PNG_FREE_ROWS) & info_ptr->free_me)
+ {
+ if (info_ptr->row_pointers)
+ {
+ int row;
+ for (row = 0; row < (int)info_ptr->height; row++)
+ {
+ png_free(png_ptr, info_ptr->row_pointers[row]);
+ info_ptr->row_pointers[row] = NULL;
+ }
+ png_free(png_ptr, info_ptr->row_pointers);
+ info_ptr->row_pointers = NULL;
+ }
+ info_ptr->valid &= ~PNG_INFO_IDAT;
+ }
+#endif
+
+ if (num == -1)
+ info_ptr->free_me &= ~mask;
+ else
+ info_ptr->free_me &= ~(mask & ~PNG_FREE_MUL);
+}
+
+/* This is an internal routine to free any memory that the info struct is
+ * pointing to before re-using it or freeing the struct itself. Recall
+ * that png_free() checks for NULL pointers for us.
+ */
+void /* PRIVATE */
+png_info_destroy(png_structp png_ptr, png_infop info_ptr)
+{
+ png_debug(1, "in png_info_destroy");
+
+ png_free_data(png_ptr, info_ptr, PNG_FREE_ALL, -1);
+
+#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
+ if (png_ptr->num_chunk_list)
+ {
+ png_free(png_ptr, png_ptr->chunk_list);
+ png_ptr->chunk_list = NULL;
+ png_ptr->num_chunk_list = 0;
+ }
+#endif
+
+ png_info_init_3(&info_ptr, png_sizeof(png_info));
+}
+#endif /* defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) */
+
+/* This function returns a pointer to the io_ptr associated with the user
+ * functions. The application should free any memory associated with this
+ * pointer before png_write_destroy() or png_read_destroy() are called.
+ */
+png_voidp PNGAPI
+png_get_io_ptr(png_structp png_ptr)
+{
+ if (png_ptr == NULL)
+ return (NULL);
+ return (png_ptr->io_ptr);
+}
+
+#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
+#ifdef PNG_STDIO_SUPPORTED
+/* Initialize the default input/output functions for the PNG file. If you
+ * use your own read or write routines, you can call either png_set_read_fn()
+ * or png_set_write_fn() instead of png_init_io(). If you have defined
+ * PNG_NO_STDIO, you must use a function of your own because "FILE *" isn't
+ * necessarily available.
+ */
+void PNGAPI
+png_init_io(png_structp png_ptr, png_FILE_p fp)
+{
+ png_debug(1, "in png_init_io");
+
+ if (png_ptr == NULL)
+ return;
+
+ png_ptr->io_ptr = (png_voidp)fp;
+}
+#endif
+
+#ifdef PNG_TIME_RFC1123_SUPPORTED
+/* Convert the supplied time into an RFC 1123 string suitable for use in
+ * a "Creation Time" or other text-based time string.
+ */
+png_charp PNGAPI
+png_convert_to_rfc1123(png_structp png_ptr, png_timep ptime)
+{
+ static PNG_CONST char short_months[12][4] =
+ {"Jan", "Feb", "Mar", "Apr", "May", "Jun",
+ "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
+
+ if (png_ptr == NULL)
+ return (NULL);
+ if (png_ptr->time_buffer == NULL)
+ {
+ png_ptr->time_buffer = (png_charp)png_malloc(png_ptr, (png_uint_32)(29*
+ png_sizeof(char)));
+ }
+
+#ifdef USE_FAR_KEYWORD
+ {
+ char near_time_buf[29];
+ png_snprintf6(near_time_buf, 29, "%d %s %d %02d:%02d:%02d +0000",
+ ptime->day % 32, short_months[(ptime->month - 1) % 12],
+ ptime->year, ptime->hour % 24, ptime->minute % 60,
+ ptime->second % 61);
+ png_memcpy(png_ptr->time_buffer, near_time_buf,
+ 29*png_sizeof(char));
+ }
+#else
+ png_snprintf6(png_ptr->time_buffer, 29, "%d %s %d %02d:%02d:%02d +0000",
+ ptime->day % 32, short_months[(ptime->month - 1) % 12],
+ ptime->year, ptime->hour % 24, ptime->minute % 60,
+ ptime->second % 61);
+#endif
+ return ((png_charp)png_ptr->time_buffer);
+}
+#endif /* PNG_TIME_RFC1123_SUPPORTED */
+
+#endif /* defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) */
+
+png_charp PNGAPI
+png_get_copyright(png_structp png_ptr)
+{
+ png_ptr = png_ptr; /* Silence compiler warning about unused png_ptr */
+#ifdef PNG_STRING_COPYRIGHT
+ return PNG_STRING_COPYRIGHT
+#else
+#ifdef __STDC__
+ return ((png_charp) PNG_STRING_NEWLINE \
+ "libpng version 1.4.0 - January 3, 2010" PNG_STRING_NEWLINE \
+ "Copyright (c) 1998-2010 Glenn Randers-Pehrson" PNG_STRING_NEWLINE \
+ "Copyright (c) 1996-1997 Andreas Dilger" PNG_STRING_NEWLINE \
+ "Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc." \
+ PNG_STRING_NEWLINE);
+#else
+ return ((png_charp) "libpng version 1.4.0 - January 3, 2010\
+ Copyright (c) 1998-2010 Glenn Randers-Pehrson\
+ Copyright (c) 1996-1997 Andreas Dilger\
+ Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.");
+#endif
+#endif
+}
+
+/* The following return the library version as a short string in the
+ * format 1.0.0 through 99.99.99zz. To get the version of *.h files
+ * used with your application, print out PNG_LIBPNG_VER_STRING, which
+ * is defined in png.h.
+ * Note: now there is no difference between png_get_libpng_ver() and
+ * png_get_header_ver(). Due to the version_nn_nn_nn typedef guard,
+ * it is guaranteed that png.c uses the correct version of png.h.
+ */
+png_charp PNGAPI
+png_get_libpng_ver(png_structp png_ptr)
+{
+ /* Version of *.c files used when building libpng */
+ png_ptr = png_ptr; /* Silence compiler warning about unused png_ptr */
+ return ((png_charp) PNG_LIBPNG_VER_STRING);
+}
+
+png_charp PNGAPI
+png_get_header_ver(png_structp png_ptr)
+{
+ /* Version of *.h files used when building libpng */
+ png_ptr = png_ptr; /* Silence compiler warning about unused png_ptr */
+ return ((png_charp) PNG_LIBPNG_VER_STRING);
+}
+
+png_charp PNGAPI
+png_get_header_version(png_structp png_ptr)
+{
+ /* Returns longer string containing both version and date */
+ png_ptr = png_ptr; /* Silence compiler warning about unused png_ptr */
+#ifdef __STDC__
+ return ((png_charp) PNG_HEADER_VERSION_STRING
+#ifndef PNG_READ_SUPPORTED
+ " (NO READ SUPPORT)"
+#endif
+ PNG_STRING_NEWLINE);
+#else
+ return ((png_charp) PNG_HEADER_VERSION_STRING);
+#endif
+}
+
+#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
+#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
+int PNGAPI
+png_handle_as_unknown(png_structp png_ptr, png_bytep chunk_name)
+{
+ /* Check chunk_name and return "keep" value if it's on the list, else 0 */
+ int i;
+ png_bytep p;
+ if (png_ptr == NULL || chunk_name == NULL || png_ptr->num_chunk_list<=0)
+ return 0;
+ p = png_ptr->chunk_list + png_ptr->num_chunk_list*5 - 5;
+ for (i = png_ptr->num_chunk_list; i; i--, p -= 5)
+ if (!png_memcmp(chunk_name, p, 4))
+ return ((int)*(p + 4));
+ return 0;
+}
+#endif
+
+/* This function, added to libpng-1.0.6g, is untested. */
+int PNGAPI
+png_reset_zstream(png_structp png_ptr)
+{
+ if (png_ptr == NULL)
+ return Z_STREAM_ERROR;
+ return (inflateReset(&png_ptr->zstream));
+}
+#endif /* defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) */
+
+/* This function was added to libpng-1.0.7 */
+png_uint_32 PNGAPI
+png_access_version_number(void)
+{
+ /* Version of *.c files used when building libpng */
+ return((png_uint_32) PNG_LIBPNG_VER);
+}
+
+
+
+#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
+#ifdef PNG_SIZE_T
+/* Added at libpng version 1.2.6 */
+ PNG_EXTERN png_size_t PNGAPI png_convert_size PNGARG((size_t size));
+png_size_t PNGAPI
+png_convert_size(size_t size)
+{
+ if (size > (png_size_t)-1)
+ PNG_ABORT(); /* We haven't got access to png_ptr, so no png_error() */
+ return ((png_size_t)size);
+}
+#endif /* PNG_SIZE_T */
+
+/* Added at libpng version 1.2.34 and 1.4.0 (moved from pngset.c) */
+#ifdef PNG_cHRM_SUPPORTED
+#ifdef PNG_CHECK_cHRM_SUPPORTED
+
+/*
+ * Multiply two 32-bit numbers, V1 and V2, using 32-bit
+ * arithmetic, to produce a 64 bit result in the HI/LO words.
+ *
+ * A B
+ * x C D
+ * ------
+ * AD || BD
+ * AC || CB || 0
+ *
+ * where A and B are the high and low 16-bit words of V1,
+ * C and D are the 16-bit words of V2, AD is the product of
+ * A and D, and X || Y is (X << 16) + Y.
+*/
+
+void /* PRIVATE */
+png_64bit_product (long v1, long v2, unsigned long *hi_product,
+ unsigned long *lo_product)
+{
+ int a, b, c, d;
+ long lo, hi, x, y;
+
+ a = (v1 >> 16) & 0xffff;
+ b = v1 & 0xffff;
+ c = (v2 >> 16) & 0xffff;
+ d = v2 & 0xffff;
+
+ lo = b * d; /* BD */
+ x = a * d + c * b; /* AD + CB */
+ y = ((lo >> 16) & 0xffff) + x;
+
+ lo = (lo & 0xffff) | ((y & 0xffff) << 16);
+ hi = (y >> 16) & 0xffff;
+
+ hi += a * c; /* AC */
+
+ *hi_product = (unsigned long)hi;
+ *lo_product = (unsigned long)lo;
+}
+
+int /* PRIVATE */
+png_check_cHRM_fixed(png_structp png_ptr,
+ png_fixed_point white_x, png_fixed_point white_y, png_fixed_point red_x,
+ png_fixed_point red_y, png_fixed_point green_x, png_fixed_point green_y,
+ png_fixed_point blue_x, png_fixed_point blue_y)
+{
+ int ret = 1;
+ unsigned long xy_hi,xy_lo,yx_hi,yx_lo;
+
+ png_debug(1, "in function png_check_cHRM_fixed");
+
+ if (png_ptr == NULL)
+ return 0;
+
+ if (white_x < 0 || white_y <= 0 ||
+ red_x < 0 || red_y < 0 ||
+ green_x < 0 || green_y < 0 ||
+ blue_x < 0 || blue_y < 0)
+ {
+ png_warning(png_ptr,
+ "Ignoring attempt to set negative chromaticity value");
+ ret = 0;
+ }
+ if (white_x > (png_fixed_point) PNG_UINT_31_MAX ||
+ white_y > (png_fixed_point) PNG_UINT_31_MAX ||
+ red_x > (png_fixed_point) PNG_UINT_31_MAX ||
+ red_y > (png_fixed_point) PNG_UINT_31_MAX ||
+ green_x > (png_fixed_point) PNG_UINT_31_MAX ||
+ green_y > (png_fixed_point) PNG_UINT_31_MAX ||
+ blue_x > (png_fixed_point) PNG_UINT_31_MAX ||
+ blue_y > (png_fixed_point) PNG_UINT_31_MAX )
+ {
+ png_warning(png_ptr,
+ "Ignoring attempt to set chromaticity value exceeding 21474.83");
+ ret = 0;
+ }
+ if (white_x > 100000L - white_y)
+ {
+ png_warning(png_ptr, "Invalid cHRM white point");
+ ret = 0;
+ }
+ if (red_x > 100000L - red_y)
+ {
+ png_warning(png_ptr, "Invalid cHRM red point");
+ ret = 0;
+ }
+ if (green_x > 100000L - green_y)
+ {
+ png_warning(png_ptr, "Invalid cHRM green point");
+ ret = 0;
+ }
+ if (blue_x > 100000L - blue_y)
+ {
+ png_warning(png_ptr, "Invalid cHRM blue point");
+ ret = 0;
+ }
+
+ png_64bit_product(green_x - red_x, blue_y - red_y, &xy_hi, &xy_lo);
+ png_64bit_product(green_y - red_y, blue_x - red_x, &yx_hi, &yx_lo);
+
+ if (xy_hi == yx_hi && xy_lo == yx_lo)
+ {
+ png_warning(png_ptr,
+ "Ignoring attempt to set cHRM RGB triangle with zero area");
+ ret = 0;
+ }
+
+ return ret;
+}
+#endif /* PNG_CHECK_cHRM_SUPPORTED */
+#endif /* PNG_cHRM_SUPPORTED */
+
+void /* PRIVATE */
+png_check_IHDR(png_structp png_ptr,
+ png_uint_32 width, png_uint_32 height, int bit_depth,
+ int color_type, int interlace_type, int compression_type,
+ int filter_type)
+{
+ int error = 0;
+
+ /* Check for width and height valid values */
+ if (width == 0)
+ {
+ png_warning(png_ptr, "Image width is zero in IHDR");
+ error = 1;
+ }
+
+ if (height == 0)
+ {
+ png_warning(png_ptr, "Image height is zero in IHDR");
+ error = 1;
+ }
+
+#ifdef PNG_SET_USER_LIMITS_SUPPORTED
+ if (width > png_ptr->user_width_max || width > PNG_USER_WIDTH_MAX)
+#else
+ if (width > PNG_USER_WIDTH_MAX)
+#endif
+ {
+ png_warning(png_ptr, "Image width exceeds user limit in IHDR");
+ error = 1;
+ }
+
+#ifdef PNG_SET_USER_LIMITS_SUPPORTED
+ if (height > png_ptr->user_height_max || height > PNG_USER_HEIGHT_MAX)
+#else
+ if (height > PNG_USER_HEIGHT_MAX)
+#endif
+ {
+ png_warning(png_ptr, "Image height exceeds user limit in IHDR");
+ error = 1;
+ }
+
+ if (width > PNG_UINT_31_MAX)
+ {
+ png_warning(png_ptr, "Invalid image width in IHDR");
+ error = 1;
+ }
+
+ if ( height > PNG_UINT_31_MAX)
+ {
+ png_warning(png_ptr, "Invalid image height in IHDR");
+ error = 1;
+ }
+
+ if ( width > (PNG_UINT_32_MAX
+ >> 3) /* 8-byte RGBA pixels */
+ - 64 /* bigrowbuf hack */
+ - 1 /* filter byte */
+ - 7*8 /* rounding of width to multiple of 8 pixels */
+ - 8) /* extra max_pixel_depth pad */
+ png_warning(png_ptr, "Width is too large for libpng to process pixels");
+
+ /* Check other values */
+ if (bit_depth != 1 && bit_depth != 2 && bit_depth != 4 &&
+ bit_depth != 8 && bit_depth != 16)
+ {
+ png_warning(png_ptr, "Invalid bit depth in IHDR");
+ error = 1;
+ }
+
+ if (color_type < 0 || color_type == 1 ||
+ color_type == 5 || color_type > 6)
+ {
+ png_warning(png_ptr, "Invalid color type in IHDR");
+ error = 1;
+ }
+
+ if (((color_type == PNG_COLOR_TYPE_PALETTE) && bit_depth > 8) ||
+ ((color_type == PNG_COLOR_TYPE_RGB ||
+ color_type == PNG_COLOR_TYPE_GRAY_ALPHA ||
+ color_type == PNG_COLOR_TYPE_RGB_ALPHA) && bit_depth < 8))
+ {
+ png_warning(png_ptr, "Invalid color type/bit depth combination in IHDR");
+ error = 1;
+ }
+
+ if (interlace_type >= PNG_INTERLACE_LAST)
+ {
+ png_warning(png_ptr, "Unknown interlace method in IHDR");
+ error = 1;
+ }
+
+ if (compression_type != PNG_COMPRESSION_TYPE_BASE)
+ {
+ png_warning(png_ptr, "Unknown compression method in IHDR");
+ error = 1;
+ }
+
+#ifdef PNG_MNG_FEATURES_SUPPORTED
+ /* Accept filter_method 64 (intrapixel differencing) only if
+ * 1. Libpng was compiled with PNG_MNG_FEATURES_SUPPORTED and
+ * 2. Libpng did not read a PNG signature (this filter_method is only
+ * used in PNG datastreams that are embedded in MNG datastreams) and
+ * 3. The application called png_permit_mng_features with a mask that
+ * included PNG_FLAG_MNG_FILTER_64 and
+ * 4. The filter_method is 64 and
+ * 5. The color_type is RGB or RGBA
+ */
+ if ((png_ptr->mode & PNG_HAVE_PNG_SIGNATURE) &&
+ png_ptr->mng_features_permitted)
+ png_warning(png_ptr, "MNG features are not allowed in a PNG datastream");
+
+ if (filter_type != PNG_FILTER_TYPE_BASE)
+ {
+ if (!((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) &&
+ (filter_type == PNG_INTRAPIXEL_DIFFERENCING) &&
+ ((png_ptr->mode & PNG_HAVE_PNG_SIGNATURE) == 0) &&
+ (color_type == PNG_COLOR_TYPE_RGB ||
+ color_type == PNG_COLOR_TYPE_RGB_ALPHA)))
+ {
+ png_warning(png_ptr, "Unknown filter method in IHDR");
+ error = 1;
+ }
+
+ if (png_ptr->mode & PNG_HAVE_PNG_SIGNATURE)
+ {
+ png_warning(png_ptr, "Invalid filter method in IHDR");
+ error = 1;
+ }
+ }
+
+#else
+ if (filter_type != PNG_FILTER_TYPE_BASE)
+ {
+ png_warning(png_ptr, "Unknown filter method in IHDR");
+ error = 1;
+ }
+#endif
+
+ if (error == 1)
+ png_error(png_ptr, "Invalid IHDR data");
+}
+#endif /* defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) */
diff --git a/src/3rdparty/libpng/png.h b/src/3rdparty/libpng/png.h
new file mode 100644
index 0000000..14e3416
--- /dev/null
+++ b/src/3rdparty/libpng/png.h
@@ -0,0 +1,2552 @@
+
+/* png.h - header file for PNG reference library
+ *
+ * libpng version 1.4.0 - January 3, 2010
+ * Copyright (c) 1998-2010 Glenn Randers-Pehrson
+ * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
+ * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ *
+ * This code is released under the libpng license (See LICENSE, below)
+ *
+ * Authors and maintainers:
+ * libpng versions 0.71, May 1995, through 0.88, January 1996: Guy Schalnat
+ * libpng versions 0.89c, June 1996, through 0.96, May 1997: Andreas Dilger
+ * libpng versions 0.97, January 1998, through 1.4.0 - January 3, 2010: Glenn
+ * See also "Contributing Authors", below.
+ *
+ * Note about libpng version numbers:
+ *
+ * Due to various miscommunications, unforeseen code incompatibilities
+ * and occasional factors outside the authors' control, version numbering
+ * on the library has not always been consistent and straightforward.
+ * The following table summarizes matters since version 0.89c, which was
+ * the first widely used release:
+ *
+ * source png.h png.h shared-lib
+ * version string int version
+ * ------- ------ ----- ----------
+ * 0.89c "1.0 beta 3" 0.89 89 1.0.89
+ * 0.90 "1.0 beta 4" 0.90 90 0.90 [should have been 2.0.90]
+ * 0.95 "1.0 beta 5" 0.95 95 0.95 [should have been 2.0.95]
+ * 0.96 "1.0 beta 6" 0.96 96 0.96 [should have been 2.0.96]
+ * 0.97b "1.00.97 beta 7" 1.00.97 97 1.0.1 [should have been 2.0.97]
+ * 0.97c 0.97 97 2.0.97
+ * 0.98 0.98 98 2.0.98
+ * 0.99 0.99 98 2.0.99
+ * 0.99a-m 0.99 99 2.0.99
+ * 1.00 1.00 100 2.1.0 [100 should be 10000]
+ * 1.0.0 (from here on, the 100 2.1.0 [100 should be 10000]
+ * 1.0.1 png.h string is 10001 2.1.0
+ * 1.0.1a-e identical to the 10002 from here on, the shared library
+ * 1.0.2 source version) 10002 is 2.V where V is the source code
+ * 1.0.2a-b 10003 version, except as noted.
+ * 1.0.3 10003
+ * 1.0.3a-d 10004
+ * 1.0.4 10004
+ * 1.0.4a-f 10005
+ * 1.0.5 (+ 2 patches) 10005
+ * 1.0.5a-d 10006
+ * 1.0.5e-r 10100 (not source compatible)
+ * 1.0.5s-v 10006 (not binary compatible)
+ * 1.0.6 (+ 3 patches) 10006 (still binary incompatible)
+ * 1.0.6d-f 10007 (still binary incompatible)
+ * 1.0.6g 10007
+ * 1.0.6h 10007 10.6h (testing xy.z so-numbering)
+ * 1.0.6i 10007 10.6i
+ * 1.0.6j 10007 2.1.0.6j (incompatible with 1.0.0)
+ * 1.0.7beta11-14 DLLNUM 10007 2.1.0.7beta11-14 (binary compatible)
+ * 1.0.7beta15-18 1 10007 2.1.0.7beta15-18 (binary compatible)
+ * 1.0.7rc1-2 1 10007 2.1.0.7rc1-2 (binary compatible)
+ * 1.0.7 1 10007 (still compatible)
+ * 1.0.8beta1-4 1 10008 2.1.0.8beta1-4
+ * 1.0.8rc1 1 10008 2.1.0.8rc1
+ * 1.0.8 1 10008 2.1.0.8
+ * 1.0.9beta1-6 1 10009 2.1.0.9beta1-6
+ * 1.0.9rc1 1 10009 2.1.0.9rc1
+ * 1.0.9beta7-10 1 10009 2.1.0.9beta7-10
+ * 1.0.9rc2 1 10009 2.1.0.9rc2
+ * 1.0.9 1 10009 2.1.0.9
+ * 1.0.10beta1 1 10010 2.1.0.10beta1
+ * 1.0.10rc1 1 10010 2.1.0.10rc1
+ * 1.0.10 1 10010 2.1.0.10
+ * 1.0.11beta1-3 1 10011 2.1.0.11beta1-3
+ * 1.0.11rc1 1 10011 2.1.0.11rc1
+ * 1.0.11 1 10011 2.1.0.11
+ * 1.0.12beta1-2 2 10012 2.1.0.12beta1-2
+ * 1.0.12rc1 2 10012 2.1.0.12rc1
+ * 1.0.12 2 10012 2.1.0.12
+ * 1.1.0a-f - 10100 2.1.1.0a-f (branch abandoned)
+ * 1.2.0beta1-2 2 10200 2.1.2.0beta1-2
+ * 1.2.0beta3-5 3 10200 3.1.2.0beta3-5
+ * 1.2.0rc1 3 10200 3.1.2.0rc1
+ * 1.2.0 3 10200 3.1.2.0
+ * 1.2.1beta1-4 3 10201 3.1.2.1beta1-4
+ * 1.2.1rc1-2 3 10201 3.1.2.1rc1-2
+ * 1.2.1 3 10201 3.1.2.1
+ * 1.2.2beta1-6 12 10202 12.so.0.1.2.2beta1-6
+ * 1.0.13beta1 10 10013 10.so.0.1.0.13beta1
+ * 1.0.13rc1 10 10013 10.so.0.1.0.13rc1
+ * 1.2.2rc1 12 10202 12.so.0.1.2.2rc1
+ * 1.0.13 10 10013 10.so.0.1.0.13
+ * 1.2.2 12 10202 12.so.0.1.2.2
+ * 1.2.3rc1-6 12 10203 12.so.0.1.2.3rc1-6
+ * 1.2.3 12 10203 12.so.0.1.2.3
+ * 1.2.4beta1-3 13 10204 12.so.0.1.2.4beta1-3
+ * 1.0.14rc1 13 10014 10.so.0.1.0.14rc1
+ * 1.2.4rc1 13 10204 12.so.0.1.2.4rc1
+ * 1.0.14 10 10014 10.so.0.1.0.14
+ * 1.2.4 13 10204 12.so.0.1.2.4
+ * 1.2.5beta1-2 13 10205 12.so.0.1.2.5beta1-2
+ * 1.0.15rc1-3 10 10015 10.so.0.1.0.15rc1-3
+ * 1.2.5rc1-3 13 10205 12.so.0.1.2.5rc1-3
+ * 1.0.15 10 10015 10.so.0.1.0.15
+ * 1.2.5 13 10205 12.so.0.1.2.5
+ * 1.2.6beta1-4 13 10206 12.so.0.1.2.6beta1-4
+ * 1.0.16 10 10016 10.so.0.1.0.16
+ * 1.2.6 13 10206 12.so.0.1.2.6
+ * 1.2.7beta1-2 13 10207 12.so.0.1.2.7beta1-2
+ * 1.0.17rc1 10 10017 12.so.0.1.0.17rc1
+ * 1.2.7rc1 13 10207 12.so.0.1.2.7rc1
+ * 1.0.17 10 10017 12.so.0.1.0.17
+ * 1.2.7 13 10207 12.so.0.1.2.7
+ * 1.2.8beta1-5 13 10208 12.so.0.1.2.8beta1-5
+ * 1.0.18rc1-5 10 10018 12.so.0.1.0.18rc1-5
+ * 1.2.8rc1-5 13 10208 12.so.0.1.2.8rc1-5
+ * 1.0.18 10 10018 12.so.0.1.0.18
+ * 1.2.8 13 10208 12.so.0.1.2.8
+ * 1.2.9beta1-3 13 10209 12.so.0.1.2.9beta1-3
+ * 1.2.9beta4-11 13 10209 12.so.0.9[.0]
+ * 1.2.9rc1 13 10209 12.so.0.9[.0]
+ * 1.2.9 13 10209 12.so.0.9[.0]
+ * 1.2.10beta1-7 13 10210 12.so.0.10[.0]
+ * 1.2.10rc1-2 13 10210 12.so.0.10[.0]
+ * 1.2.10 13 10210 12.so.0.10[.0]
+ * 1.4.0beta1-5 14 10400 14.so.0.0[.0]
+ * 1.2.11beta1-4 13 10211 12.so.0.11[.0]
+ * 1.4.0beta7-8 14 10400 14.so.0.0[.0]
+ * 1.2.11 13 10211 12.so.0.11[.0]
+ * 1.2.12 13 10212 12.so.0.12[.0]
+ * 1.4.0beta9-14 14 10400 14.so.0.0[.0]
+ * 1.2.13 13 10213 12.so.0.13[.0]
+ * 1.4.0beta15-36 14 10400 14.so.0.0[.0]
+ * 1.4.0beta37-87 14 10400 14.so.14.0[.0]
+ * 1.4.0rc01 14 10400 14.so.14.0[.0]
+ * 1.4.0beta88-109 14 10400 14.so.14.0[.0]
+ * 1.4.0rc02-08 14 10400 14.so.14.0[.0]
+ * 1.4.0 14 10400 14.so.14.0[.0]
+ *
+ * Henceforth the source version will match the shared-library major
+ * and minor numbers; the shared-library major version number will be
+ * used for changes in backward compatibility, as it is intended. The
+ * PNG_LIBPNG_VER macro, which is not used within libpng but is available
+ * for applications, is an unsigned integer of the form xyyzz corresponding
+ * to the source version x.y.z (leading zeros in y and z). Beta versions
+ * were given the previous public release number plus a letter, until
+ * version 1.0.6j; from then on they were given the upcoming public
+ * release number plus "betaNN" or "rcN".
+ *
+ * Binary incompatibility exists only when applications make direct access
+ * to the info_ptr or png_ptr members through png.h, and the compiled
+ * application is loaded with a different version of the library.
+ *
+ * DLLNUM will change each time there are forward or backward changes
+ * in binary compatibility (e.g., when a new feature is added).
+ *
+ * See libpng.txt or libpng.3 for more information. The PNG specification
+ * is available as a W3C Recommendation and as an ISO Specification,
+ * <http://www.w3.org/TR/2003/REC-PNG-20031110/
+ */
+
+/*
+ * COPYRIGHT NOTICE, DISCLAIMER, and LICENSE:
+ *
+ * If you modify libpng you may insert additional notices immediately following
+ * this sentence.
+ *
+ * This code is released under the libpng license.
+ *
+ * libpng versions 1.2.6, August 15, 2004, through 1.4.0, January 3, 2010, are
+ * Copyright (c) 2004, 2006-2010 Glenn Randers-Pehrson, and are
+ * distributed according to the same disclaimer and license as libpng-1.2.5
+ * with the following individual added to the list of Contributing Authors:
+ *
+ * Cosmin Truta
+ *
+ * libpng versions 1.0.7, July 1, 2000, through 1.2.5, October 3, 2002, are
+ * Copyright (c) 2000-2002 Glenn Randers-Pehrson, and are
+ * distributed according to the same disclaimer and license as libpng-1.0.6
+ * with the following individuals added to the list of Contributing Authors:
+ *
+ * Simon-Pierre Cadieux
+ * Eric S. Raymond
+ * Gilles Vollant
+ *
+ * and with the following additions to the disclaimer:
+ *
+ * There is no warranty against interference with your enjoyment of the
+ * library or against infringement. There is no warranty that our
+ * efforts or the library will fulfill any of your particular purposes
+ * or needs. This library is provided with all faults, and the entire
+ * risk of satisfactory quality, performance, accuracy, and effort is with
+ * the user.
+ *
+ * libpng versions 0.97, January 1998, through 1.0.6, March 20, 2000, are
+ * Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson, and are
+ * distributed according to the same disclaimer and license as libpng-0.96,
+ * with the following individuals added to the list of Contributing Authors:
+ *
+ * Tom Lane
+ * Glenn Randers-Pehrson
+ * Willem van Schaik
+ *
+ * libpng versions 0.89, June 1996, through 0.96, May 1997, are
+ * Copyright (c) 1996, 1997 Andreas Dilger
+ * Distributed according to the same disclaimer and license as libpng-0.88,
+ * with the following individuals added to the list of Contributing Authors:
+ *
+ * John Bowler
+ * Kevin Bracey
+ * Sam Bushell
+ * Magnus Holmgren
+ * Greg Roelofs
+ * Tom Tanner
+ *
+ * libpng versions 0.5, May 1995, through 0.88, January 1996, are
+ * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
+ *
+ * For the purposes of this copyright and license, "Contributing Authors"
+ * is defined as the following set of individuals:
+ *
+ * Andreas Dilger
+ * Dave Martindale
+ * Guy Eric Schalnat
+ * Paul Schmidt
+ * Tim Wegner
+ *
+ * The PNG Reference Library is supplied "AS IS". The Contributing Authors
+ * and Group 42, Inc. disclaim all warranties, expressed or implied,
+ * including, without limitation, the warranties of merchantability and of
+ * fitness for any purpose. The Contributing Authors and Group 42, Inc.
+ * assume no liability for direct, indirect, incidental, special, exemplary,
+ * or consequential damages, which may result from the use of the PNG
+ * Reference Library, even if advised of the possibility of such damage.
+ *
+ * Permission is hereby granted to use, copy, modify, and distribute this
+ * source code, or portions hereof, for any purpose, without fee, subject
+ * to the following restrictions:
+ *
+ * 1. The origin of this source code must not be misrepresented.
+ *
+ * 2. Altered versions must be plainly marked as such and
+ * must not be misrepresented as being the original source.
+ *
+ * 3. This Copyright notice may not be removed or altered from
+ * any source or altered source distribution.
+ *
+ * The Contributing Authors and Group 42, Inc. specifically permit, without
+ * fee, and encourage the use of this source code as a component to
+ * supporting the PNG file format in commercial products. If you use this
+ * source code in a product, acknowledgment is not required but would be
+ * appreciated.
+ */
+
+/*
+ * A "png_get_copyright" function is available, for convenient use in "about"
+ * boxes and the like:
+ *
+ * printf("%s",png_get_copyright(NULL));
+ *
+ * Also, the PNG logo (in PNG format, of course) is supplied in the
+ * files "pngbar.png" and "pngbar.jpg (88x31) and "pngnow.png" (98x31).
+ */
+
+/*
+ * Libpng is OSI Certified Open Source Software. OSI Certified is a
+ * certification mark of the Open Source Initiative.
+ */
+
+/*
+ * The contributing authors would like to thank all those who helped
+ * with testing, bug fixes, and patience. This wouldn't have been
+ * possible without all of you.
+ *
+ * Thanks to Frank J. T. Wojcik for helping with the documentation.
+ */
+
+/*
+ * Y2K compliance in libpng:
+ * =========================
+ *
+ * January 3, 2010
+ *
+ * Since the PNG Development group is an ad-hoc body, we can't make
+ * an official declaration.
+ *
+ * This is your unofficial assurance that libpng from version 0.71 and
+ * upward through 1.4.0 are Y2K compliant. It is my belief that earlier
+ * versions were also Y2K compliant.
+ *
+ * Libpng only has three year fields. One is a 2-byte unsigned integer
+ * that will hold years up to 65535. The other two hold the date in text
+ * format, and will hold years up to 9999.
+ *
+ * The integer is
+ * "png_uint_16 year" in png_time_struct.
+ *
+ * The strings are
+ * "png_charp time_buffer" in png_struct and
+ * "near_time_buffer", which is a local character string in png.c.
+ *
+ * There are seven time-related functions:
+ * png.c: png_convert_to_rfc_1123() in png.c
+ * (formerly png_convert_to_rfc_1152() in error)
+ * png_convert_from_struct_tm() in pngwrite.c, called in pngwrite.c
+ * png_convert_from_time_t() in pngwrite.c
+ * png_get_tIME() in pngget.c
+ * png_handle_tIME() in pngrutil.c, called in pngread.c
+ * png_set_tIME() in pngset.c
+ * png_write_tIME() in pngwutil.c, called in pngwrite.c
+ *
+ * All handle dates properly in a Y2K environment. The
+ * png_convert_from_time_t() function calls gmtime() to convert from system
+ * clock time, which returns (year - 1900), which we properly convert to
+ * the full 4-digit year. There is a possibility that applications using
+ * libpng are not passing 4-digit years into the png_convert_to_rfc_1123()
+ * function, or that they are incorrectly passing only a 2-digit year
+ * instead of "year - 1900" into the png_convert_from_struct_tm() function,
+ * but this is not under our control. The libpng documentation has always
+ * stated that it works with 4-digit years, and the APIs have been
+ * documented as such.
+ *
+ * The tIME chunk itself is also Y2K compliant. It uses a 2-byte unsigned
+ * integer to hold the year, and can hold years as large as 65535.
+ *
+ * zlib, upon which libpng depends, is also Y2K compliant. It contains
+ * no date-related code.
+ *
+ * Glenn Randers-Pehrson
+ * libpng maintainer
+ * PNG Development Group
+ */
+
+#ifndef PNG_H
+#define PNG_H
+
+/* This is not the place to learn how to use libpng. The file libpng.txt
+ * describes how to use libpng, and the file example.c summarizes it
+ * with some code on which to build. This file is useful for looking
+ * at the actual function definitions and structure components.
+ */
+
+/* Version information for png.h - this should match the version in png.c */
+#define PNG_LIBPNG_VER_STRING "1.4.0"
+#define PNG_HEADER_VERSION_STRING \
+ " libpng version 1.4.0 - January 3, 2010\n"
+
+#define PNG_LIBPNG_VER_SONUM 14
+#define PNG_LIBPNG_VER_DLLNUM 14
+
+/* These should match the first 3 components of PNG_LIBPNG_VER_STRING: */
+#define PNG_LIBPNG_VER_MAJOR 1
+#define PNG_LIBPNG_VER_MINOR 4
+#define PNG_LIBPNG_VER_RELEASE 0
+/* This should match the numeric part of the final component of
+ * PNG_LIBPNG_VER_STRING, omitting any leading zero:
+ */
+
+#define PNG_LIBPNG_VER_BUILD 0
+
+/* Release Status */
+#define PNG_LIBPNG_BUILD_ALPHA 1
+#define PNG_LIBPNG_BUILD_BETA 2
+#define PNG_LIBPNG_BUILD_RC 3
+#define PNG_LIBPNG_BUILD_STABLE 4
+#define PNG_LIBPNG_BUILD_RELEASE_STATUS_MASK 7
+
+/* Release-Specific Flags */
+#define PNG_LIBPNG_BUILD_PATCH 8 /* Can be OR'ed with
+ PNG_LIBPNG_BUILD_STABLE only */
+#define PNG_LIBPNG_BUILD_PRIVATE 16 /* Cannot be OR'ed with
+ PNG_LIBPNG_BUILD_SPECIAL */
+#define PNG_LIBPNG_BUILD_SPECIAL 32 /* Cannot be OR'ed with
+ PNG_LIBPNG_BUILD_PRIVATE */
+
+#define PNG_LIBPNG_BUILD_BASE_TYPE PNG_LIBPNG_BUILD_BETA
+
+/* Careful here. At one time, Guy wanted to use 082, but that would be octal.
+ * We must not include leading zeros.
+ * Versions 0.7 through 1.0.0 were in the range 0 to 100 here (only
+ * version 1.0.0 was mis-numbered 100 instead of 10000). From
+ * version 1.0.1 it's xxyyzz, where x=major, y=minor, z=release
+ */
+#define PNG_LIBPNG_VER 10400 /* 1.4.0 */
+
+#ifndef PNG_VERSION_INFO_ONLY
+/* Include the compression library's header */
+#include "zlib.h"
+#endif
+
+#ifdef AIX
+#define jmpbuf __jmpbuf
+#endif
+
+/* Include all user configurable info, including optional assembler routines */
+#include "pngconf.h"
+
+/*
+ * Added at libpng-1.2.8
+ *
+ * Ref MSDN: Private as priority over Special
+ * VS_FF_PRIVATEBUILD File *was not* built using standard release
+ * procedures. If this value is given, the StringFileInfo block must
+ * contain a PrivateBuild string.
+ *
+ * VS_FF_SPECIALBUILD File *was* built by the original company using
+ * standard release procedures but is a variation of the standard
+ * file of the same version number. If this value is given, the
+ * StringFileInfo block must contain a SpecialBuild string.
+ */
+
+#ifdef PNG_USER_PRIVATEBUILD
+# define PNG_LIBPNG_BUILD_TYPE \
+ (PNG_LIBPNG_BUILD_BASE_TYPE | PNG_LIBPNG_BUILD_PRIVATE)
+#else
+# ifdef PNG_LIBPNG_SPECIALBUILD
+# define PNG_LIBPNG_BUILD_TYPE \
+ (PNG_LIBPNG_BUILD_BASE_TYPE | PNG_LIBPNG_BUILD_SPECIAL)
+# else
+# define PNG_LIBPNG_BUILD_TYPE (PNG_LIBPNG_BUILD_BASE_TYPE)
+# endif
+#endif
+
+#ifndef PNG_VERSION_INFO_ONLY
+
+/* Inhibit C++ name-mangling for libpng functions but not for system calls. */
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+/* This file is arranged in several sections. The first section contains
+ * structure and type definitions. The second section contains the external
+ * library functions, while the third has the internal library functions,
+ * which applications aren't expected to use directly.
+ */
+
+/* Variables declared in png.c - only it needs to define PNG_NO_EXTERN */
+#if !defined(PNG_NO_EXTERN) || defined(PNG_ALWAYS_EXTERN)
+/* Version information for C files, stored in png.c. This had better match
+ * the version above.
+ */
+#define png_libpng_ver png_get_header_ver(NULL)
+
+#endif /* PNG_NO_EXTERN */
+
+/* Three color definitions. The order of the red, green, and blue, (and the
+ * exact size) is not important, although the size of the fields need to
+ * be png_byte or png_uint_16 (as defined below).
+ */
+typedef struct png_color_struct
+{
+ png_byte red;
+ png_byte green;
+ png_byte blue;
+} png_color;
+typedef png_color FAR * png_colorp;
+typedef png_color FAR * FAR * png_colorpp;
+
+typedef struct png_color_16_struct
+{
+ png_byte index; /* used for palette files */
+ png_uint_16 red; /* for use in red green blue files */
+ png_uint_16 green;
+ png_uint_16 blue;
+ png_uint_16 gray; /* for use in grayscale files */
+} png_color_16;
+typedef png_color_16 FAR * png_color_16p;
+typedef png_color_16 FAR * FAR * png_color_16pp;
+
+typedef struct png_color_8_struct
+{
+ png_byte red; /* for use in red green blue files */
+ png_byte green;
+ png_byte blue;
+ png_byte gray; /* for use in grayscale files */
+ png_byte alpha; /* for alpha channel files */
+} png_color_8;
+typedef png_color_8 FAR * png_color_8p;
+typedef png_color_8 FAR * FAR * png_color_8pp;
+
+/*
+ * The following two structures are used for the in-core representation
+ * of sPLT chunks.
+ */
+typedef struct png_sPLT_entry_struct
+{
+ png_uint_16 red;
+ png_uint_16 green;
+ png_uint_16 blue;
+ png_uint_16 alpha;
+ png_uint_16 frequency;
+} png_sPLT_entry;
+typedef png_sPLT_entry FAR * png_sPLT_entryp;
+typedef png_sPLT_entry FAR * FAR * png_sPLT_entrypp;
+
+/* When the depth of the sPLT palette is 8 bits, the color and alpha samples
+ * occupy the LSB of their respective members, and the MSB of each member
+ * is zero-filled. The frequency member always occupies the full 16 bits.
+ */
+
+typedef struct png_sPLT_struct
+{
+ png_charp name; /* palette name */
+ png_byte depth; /* depth of palette samples */
+ png_sPLT_entryp entries; /* palette entries */
+ png_int_32 nentries; /* number of palette entries */
+} png_sPLT_t;
+typedef png_sPLT_t FAR * png_sPLT_tp;
+typedef png_sPLT_t FAR * FAR * png_sPLT_tpp;
+
+#ifdef PNG_TEXT_SUPPORTED
+/* png_text holds the contents of a text/ztxt/itxt chunk in a PNG file,
+ * and whether that contents is compressed or not. The "key" field
+ * points to a regular zero-terminated C string. The "text", "lang", and
+ * "lang_key" fields can be regular C strings, empty strings, or NULL pointers.
+ * However, the * structure returned by png_get_text() will always contain
+ * regular zero-terminated C strings (possibly empty), never NULL pointers,
+ * so they can be safely used in printf() and other string-handling functions.
+ */
+typedef struct png_text_struct
+{
+ int compression; /* compression value:
+ -1: tEXt, none
+ 0: zTXt, deflate
+ 1: iTXt, none
+ 2: iTXt, deflate */
+ png_charp key; /* keyword, 1-79 character description of "text" */
+ png_charp text; /* comment, may be an empty string (ie "")
+ or a NULL pointer */
+ png_size_t text_length; /* length of the text string */
+#ifdef PNG_iTXt_SUPPORTED
+ png_size_t itxt_length; /* length of the itxt string */
+ png_charp lang; /* language code, 0-79 characters
+ or a NULL pointer */
+ png_charp lang_key; /* keyword translated UTF-8 string, 0 or more
+ chars or a NULL pointer */
+#endif
+} png_text;
+typedef png_text FAR * png_textp;
+typedef png_text FAR * FAR * png_textpp;
+#endif
+
+/* Supported compression types for text in PNG files (tEXt, and zTXt).
+ * The values of the PNG_TEXT_COMPRESSION_ defines should NOT be changed. */
+#define PNG_TEXT_COMPRESSION_NONE_WR -3
+#define PNG_TEXT_COMPRESSION_zTXt_WR -2
+#define PNG_TEXT_COMPRESSION_NONE -1
+#define PNG_TEXT_COMPRESSION_zTXt 0
+#define PNG_ITXT_COMPRESSION_NONE 1
+#define PNG_ITXT_COMPRESSION_zTXt 2
+#define PNG_TEXT_COMPRESSION_LAST 3 /* Not a valid value */
+
+/* png_time is a way to hold the time in an machine independent way.
+ * Two conversions are provided, both from time_t and struct tm. There
+ * is no portable way to convert to either of these structures, as far
+ * as I know. If you know of a portable way, send it to me. As a side
+ * note - PNG has always been Year 2000 compliant!
+ */
+typedef struct png_time_struct
+{
+ png_uint_16 year; /* full year, as in, 1995 */
+ png_byte month; /* month of year, 1 - 12 */
+ png_byte day; /* day of month, 1 - 31 */
+ png_byte hour; /* hour of day, 0 - 23 */
+ png_byte minute; /* minute of hour, 0 - 59 */
+ png_byte second; /* second of minute, 0 - 60 (for leap seconds) */
+} png_time;
+typedef png_time FAR * png_timep;
+typedef png_time FAR * FAR * png_timepp;
+
+#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED) || \
+ defined(PNG_HANDLE_AS_UNKNOWN_SUPPORTED)
+/* png_unknown_chunk is a structure to hold queued chunks for which there is
+ * no specific support. The idea is that we can use this to queue
+ * up private chunks for output even though the library doesn't actually
+ * know about their semantics.
+ */
+typedef struct png_unknown_chunk_t
+{
+ png_byte name[5];
+ png_byte *data;
+ png_size_t size;
+
+ /* libpng-using applications should NOT directly modify this byte. */
+ png_byte location; /* mode of operation at read time */
+}
+png_unknown_chunk;
+typedef png_unknown_chunk FAR * png_unknown_chunkp;
+typedef png_unknown_chunk FAR * FAR * png_unknown_chunkpp;
+#endif
+
+/* png_info is a structure that holds the information in a PNG file so
+ * that the application can find out the characteristics of the image.
+ * If you are reading the file, this structure will tell you what is
+ * in the PNG file. If you are writing the file, fill in the information
+ * you want to put into the PNG file, then call png_write_info().
+ * The names chosen should be very close to the PNG specification, so
+ * consult that document for information about the meaning of each field.
+ *
+ * With libpng < 0.95, it was only possible to directly set and read the
+ * the values in the png_info_struct, which meant that the contents and
+ * order of the values had to remain fixed. With libpng 0.95 and later,
+ * however, there are now functions that abstract the contents of
+ * png_info_struct from the application, so this makes it easier to use
+ * libpng with dynamic libraries, and even makes it possible to use
+ * libraries that don't have all of the libpng ancillary chunk-handing
+ * functionality.
+ *
+ * In any case, the order of the parameters in png_info_struct should NOT
+ * be changed for as long as possible to keep compatibility with applications
+ * that use the old direct-access method with png_info_struct.
+ *
+ * The following members may have allocated storage attached that should be
+ * cleaned up before the structure is discarded: palette, trans, text,
+ * pcal_purpose, pcal_units, pcal_params, hist, iccp_name, iccp_profile,
+ * splt_palettes, scal_unit, row_pointers, and unknowns. By default, these
+ * are automatically freed when the info structure is deallocated, if they were
+ * allocated internally by libpng. This behavior can be changed by means
+ * of the png_data_freer() function.
+ *
+ * More allocation details: all the chunk-reading functions that
+ * change these members go through the corresponding png_set_*
+ * functions. A function to clear these members is available: see
+ * png_free_data(). The png_set_* functions do not depend on being
+ * able to point info structure members to any of the storage they are
+ * passed (they make their own copies), EXCEPT that the png_set_text
+ * functions use the same storage passed to them in the text_ptr or
+ * itxt_ptr structure argument, and the png_set_rows and png_set_unknowns
+ * functions do not make their own copies.
+ */
+typedef struct png_info_struct
+{
+ /* the following are necessary for every PNG file */
+ png_uint_32 width PNG_DEPSTRUCT; /* width of image in pixels (from IHDR) */
+ png_uint_32 height PNG_DEPSTRUCT; /* height of image in pixels (from IHDR) */
+ png_uint_32 valid PNG_DEPSTRUCT; /* valid chunk data (see PNG_INFO_ below) */
+ png_size_t rowbytes PNG_DEPSTRUCT; /* bytes needed to hold an untransformed row */
+ png_colorp palette PNG_DEPSTRUCT; /* array of color values (valid & PNG_INFO_PLTE) */
+ png_uint_16 num_palette PNG_DEPSTRUCT; /* number of color entries in "palette" (PLTE) */
+ png_uint_16 num_trans PNG_DEPSTRUCT; /* number of transparent palette color (tRNS) */
+ png_byte bit_depth PNG_DEPSTRUCT; /* 1, 2, 4, 8, or 16 bits/channel (from IHDR) */
+ png_byte color_type PNG_DEPSTRUCT; /* see PNG_COLOR_TYPE_ below (from IHDR) */
+ /* The following three should have been named *_method not *_type */
+ png_byte compression_type PNG_DEPSTRUCT; /* must be PNG_COMPRESSION_TYPE_BASE (IHDR) */
+ png_byte filter_type PNG_DEPSTRUCT; /* must be PNG_FILTER_TYPE_BASE (from IHDR) */
+ png_byte interlace_type PNG_DEPSTRUCT; /* One of PNG_INTERLACE_NONE, PNG_INTERLACE_ADAM7 */
+
+ /* The following is informational only on read, and not used on writes. */
+ png_byte channels PNG_DEPSTRUCT; /* number of data channels per pixel (1, 2, 3, 4) */
+ png_byte pixel_depth PNG_DEPSTRUCT; /* number of bits per pixel */
+ png_byte spare_byte PNG_DEPSTRUCT; /* to align the data, and for future use */
+ png_byte signature[8] PNG_DEPSTRUCT; /* magic bytes read by libpng from start of file */
+
+ /* The rest of the data is optional. If you are reading, check the
+ * valid field to see if the information in these are valid. If you
+ * are writing, set the valid field to those chunks you want written,
+ * and initialize the appropriate fields below.
+ */
+
+#if defined(PNG_gAMA_SUPPORTED) && defined(PNG_FLOATING_POINT_SUPPORTED)
+ /* The gAMA chunk describes the gamma characteristics of the system
+ * on which the image was created, normally in the range [1.0, 2.5].
+ * Data is valid if (valid & PNG_INFO_gAMA) is non-zero.
+ */
+ float gamma PNG_DEPSTRUCT; /* gamma value of image, if (valid & PNG_INFO_gAMA) */
+#endif
+
+#ifdef PNG_sRGB_SUPPORTED
+ /* GR-P, 0.96a */
+ /* Data valid if (valid & PNG_INFO_sRGB) non-zero. */
+ png_byte srgb_intent PNG_DEPSTRUCT; /* sRGB rendering intent [0, 1, 2, or 3] */
+#endif
+
+#ifdef PNG_TEXT_SUPPORTED
+ /* The tEXt, and zTXt chunks contain human-readable textual data in
+ * uncompressed, compressed, and optionally compressed forms, respectively.
+ * The data in "text" is an array of pointers to uncompressed,
+ * null-terminated C strings. Each chunk has a keyword that describes the
+ * textual data contained in that chunk. Keywords are not required to be
+ * unique, and the text string may be empty. Any number of text chunks may
+ * be in an image.
+ */
+ int num_text PNG_DEPSTRUCT; /* number of comments read/to write */
+ int max_text PNG_DEPSTRUCT; /* current size of text array */
+ png_textp text PNG_DEPSTRUCT; /* array of comments read/to write */
+#endif /* PNG_TEXT_SUPPORTED */
+
+#ifdef PNG_tIME_SUPPORTED
+ /* The tIME chunk holds the last time the displayed image data was
+ * modified. See the png_time struct for the contents of this struct.
+ */
+ png_time mod_time PNG_DEPSTRUCT;
+#endif
+
+#ifdef PNG_sBIT_SUPPORTED
+ /* The sBIT chunk specifies the number of significant high-order bits
+ * in the pixel data. Values are in the range [1, bit_depth], and are
+ * only specified for the channels in the pixel data. The contents of
+ * the low-order bits is not specified. Data is valid if
+ * (valid & PNG_INFO_sBIT) is non-zero.
+ */
+ png_color_8 sig_bit PNG_DEPSTRUCT; /* significant bits in color channels */
+#endif
+
+#if defined(PNG_tRNS_SUPPORTED) || defined(PNG_READ_EXPAND_SUPPORTED) || \
+defined(PNG_READ_BACKGROUND_SUPPORTED)
+ /* The tRNS chunk supplies transparency data for paletted images and
+ * other image types that don't need a full alpha channel. There are
+ * "num_trans" transparency values for a paletted image, stored in the
+ * same order as the palette colors, starting from index 0. Values
+ * for the data are in the range [0, 255], ranging from fully transparent
+ * to fully opaque, respectively. For non-paletted images, there is a
+ * single color specified that should be treated as fully transparent.
+ * Data is valid if (valid & PNG_INFO_tRNS) is non-zero.
+ */
+ png_bytep trans_alpha PNG_DEPSTRUCT; /* alpha values for paletted image */
+ png_color_16 trans_color PNG_DEPSTRUCT; /* transparent color for non-palette image */
+#endif
+
+#if defined(PNG_bKGD_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
+ /* The bKGD chunk gives the suggested image background color if the
+ * display program does not have its own background color and the image
+ * is needs to composited onto a background before display. The colors
+ * in "background" are normally in the same color space/depth as the
+ * pixel data. Data is valid if (valid & PNG_INFO_bKGD) is non-zero.
+ */
+ png_color_16 background PNG_DEPSTRUCT;
+#endif
+
+#ifdef PNG_oFFs_SUPPORTED
+ /* The oFFs chunk gives the offset in "offset_unit_type" units rightwards
+ * and downwards from the top-left corner of the display, page, or other
+ * application-specific co-ordinate space. See the PNG_OFFSET_ defines
+ * below for the unit types. Valid if (valid & PNG_INFO_oFFs) non-zero.
+ */
+ png_int_32 x_offset PNG_DEPSTRUCT; /* x offset on page */
+ png_int_32 y_offset PNG_DEPSTRUCT; /* y offset on page */
+ png_byte offset_unit_type PNG_DEPSTRUCT; /* offset units type */
+#endif
+
+#ifdef PNG_pHYs_SUPPORTED
+ /* The pHYs chunk gives the physical pixel density of the image for
+ * display or printing in "phys_unit_type" units (see PNG_RESOLUTION_
+ * defines below). Data is valid if (valid & PNG_INFO_pHYs) is non-zero.
+ */
+ png_uint_32 x_pixels_per_unit PNG_DEPSTRUCT; /* horizontal pixel density */
+ png_uint_32 y_pixels_per_unit PNG_DEPSTRUCT; /* vertical pixel density */
+ png_byte phys_unit_type PNG_DEPSTRUCT; /* resolution type (see PNG_RESOLUTION_ below) */
+#endif
+
+#ifdef PNG_hIST_SUPPORTED
+ /* The hIST chunk contains the relative frequency or importance of the
+ * various palette entries, so that a viewer can intelligently select a
+ * reduced-color palette, if required. Data is an array of "num_palette"
+ * values in the range [0,65535]. Data valid if (valid & PNG_INFO_hIST)
+ * is non-zero.
+ */
+ png_uint_16p hist PNG_DEPSTRUCT;
+#endif
+
+#ifdef PNG_cHRM_SUPPORTED
+ /* The cHRM chunk describes the CIE color characteristics of the monitor
+ * on which the PNG was created. This data allows the viewer to do gamut
+ * mapping of the input image to ensure that the viewer sees the same
+ * colors in the image as the creator. Values are in the range
+ * [0.0, 0.8]. Data valid if (valid & PNG_INFO_cHRM) non-zero.
+ */
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+ float x_white PNG_DEPSTRUCT;
+ float y_white PNG_DEPSTRUCT;
+ float x_red PNG_DEPSTRUCT;
+ float y_red PNG_DEPSTRUCT;
+ float x_green PNG_DEPSTRUCT;
+ float y_green PNG_DEPSTRUCT;
+ float x_blue PNG_DEPSTRUCT;
+ float y_blue PNG_DEPSTRUCT;
+#endif
+#endif
+
+#ifdef PNG_pCAL_SUPPORTED
+ /* The pCAL chunk describes a transformation between the stored pixel
+ * values and original physical data values used to create the image.
+ * The integer range [0, 2^bit_depth - 1] maps to the floating-point
+ * range given by [pcal_X0, pcal_X1], and are further transformed by a
+ * (possibly non-linear) transformation function given by "pcal_type"
+ * and "pcal_params" into "pcal_units". Please see the PNG_EQUATION_
+ * defines below, and the PNG-Group's PNG extensions document for a
+ * complete description of the transformations and how they should be
+ * implemented, and for a description of the ASCII parameter strings.
+ * Data values are valid if (valid & PNG_INFO_pCAL) non-zero.
+ */
+ png_charp pcal_purpose PNG_DEPSTRUCT; /* pCAL chunk description string */
+ png_int_32 pcal_X0 PNG_DEPSTRUCT; /* minimum value */
+ png_int_32 pcal_X1 PNG_DEPSTRUCT; /* maximum value */
+ png_charp pcal_units PNG_DEPSTRUCT; /* Latin-1 string giving physical units */
+ png_charpp pcal_params PNG_DEPSTRUCT; /* ASCII strings containing parameter values */
+ png_byte pcal_type PNG_DEPSTRUCT; /* equation type (see PNG_EQUATION_ below) */
+ png_byte pcal_nparams PNG_DEPSTRUCT; /* number of parameters given in pcal_params */
+#endif
+
+/* New members added in libpng-1.0.6 */
+ png_uint_32 free_me PNG_DEPSTRUCT; /* flags items libpng is responsible for freeing */
+
+#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED) || \
+ defined(PNG_HANDLE_AS_UNKNOWN_SUPPORTED)
+ /* Storage for unknown chunks that the library doesn't recognize. */
+ png_unknown_chunkp unknown_chunks PNG_DEPSTRUCT;
+ png_size_t unknown_chunks_num PNG_DEPSTRUCT;
+#endif
+
+#ifdef PNG_iCCP_SUPPORTED
+ /* iCCP chunk data. */
+ png_charp iccp_name PNG_DEPSTRUCT; /* profile name */
+ png_charp iccp_profile PNG_DEPSTRUCT; /* International Color Consortium profile data */
+ /* Note to maintainer: should be png_bytep */
+ png_uint_32 iccp_proflen PNG_DEPSTRUCT; /* ICC profile data length */
+ png_byte iccp_compression PNG_DEPSTRUCT; /* Always zero */
+#endif
+
+#ifdef PNG_sPLT_SUPPORTED
+ /* Data on sPLT chunks (there may be more than one). */
+ png_sPLT_tp splt_palettes PNG_DEPSTRUCT;
+ png_uint_32 splt_palettes_num PNG_DEPSTRUCT;
+#endif
+
+#ifdef PNG_sCAL_SUPPORTED
+ /* The sCAL chunk describes the actual physical dimensions of the
+ * subject matter of the graphic. The chunk contains a unit specification
+ * a byte value, and two ASCII strings representing floating-point
+ * values. The values are width and height corresponsing to one pixel
+ * in the image. This external representation is converted to double
+ * here. Data values are valid if (valid & PNG_INFO_sCAL) is non-zero.
+ */
+ png_byte scal_unit PNG_DEPSTRUCT; /* unit of physical scale */
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+ double scal_pixel_width PNG_DEPSTRUCT; /* width of one pixel */
+ double scal_pixel_height PNG_DEPSTRUCT; /* height of one pixel */
+#endif
+#ifdef PNG_FIXED_POINT_SUPPORTED
+ png_charp scal_s_width PNG_DEPSTRUCT; /* string containing height */
+ png_charp scal_s_height PNG_DEPSTRUCT; /* string containing width */
+#endif
+#endif
+
+#ifdef PNG_INFO_IMAGE_SUPPORTED
+ /* Memory has been allocated if (valid & PNG_ALLOCATED_INFO_ROWS) non-zero */
+ /* Data valid if (valid & PNG_INFO_IDAT) non-zero */
+ png_bytepp row_pointers PNG_DEPSTRUCT; /* the image bits */
+#endif
+
+#if defined(PNG_FIXED_POINT_SUPPORTED) && defined(PNG_gAMA_SUPPORTED)
+ png_fixed_point int_gamma PNG_DEPSTRUCT; /* gamma of image, if (valid & PNG_INFO_gAMA) */
+#endif
+
+#if defined(PNG_cHRM_SUPPORTED) && defined(PNG_FIXED_POINT_SUPPORTED)
+ png_fixed_point int_x_white PNG_DEPSTRUCT;
+ png_fixed_point int_y_white PNG_DEPSTRUCT;
+ png_fixed_point int_x_red PNG_DEPSTRUCT;
+ png_fixed_point int_y_red PNG_DEPSTRUCT;
+ png_fixed_point int_x_green PNG_DEPSTRUCT;
+ png_fixed_point int_y_green PNG_DEPSTRUCT;
+ png_fixed_point int_x_blue PNG_DEPSTRUCT;
+ png_fixed_point int_y_blue PNG_DEPSTRUCT;
+#endif
+
+} png_info;
+
+typedef png_info FAR * png_infop;
+typedef png_info FAR * FAR * png_infopp;
+
+/* Maximum positive integer used in PNG is (2^31)-1 */
+#define PNG_UINT_31_MAX ((png_uint_32)0x7fffffffL)
+#define PNG_UINT_32_MAX ((png_uint_32)(-1))
+#define PNG_SIZE_MAX ((png_size_t)(-1))
+
+/* These describe the color_type field in png_info. */
+/* color type masks */
+#define PNG_COLOR_MASK_PALETTE 1
+#define PNG_COLOR_MASK_COLOR 2
+#define PNG_COLOR_MASK_ALPHA 4
+
+/* color types. Note that not all combinations are legal */
+#define PNG_COLOR_TYPE_GRAY 0
+#define PNG_COLOR_TYPE_PALETTE (PNG_COLOR_MASK_COLOR | PNG_COLOR_MASK_PALETTE)
+#define PNG_COLOR_TYPE_RGB (PNG_COLOR_MASK_COLOR)
+#define PNG_COLOR_TYPE_RGB_ALPHA (PNG_COLOR_MASK_COLOR | PNG_COLOR_MASK_ALPHA)
+#define PNG_COLOR_TYPE_GRAY_ALPHA (PNG_COLOR_MASK_ALPHA)
+/* aliases */
+#define PNG_COLOR_TYPE_RGBA PNG_COLOR_TYPE_RGB_ALPHA
+#define PNG_COLOR_TYPE_GA PNG_COLOR_TYPE_GRAY_ALPHA
+
+/* This is for compression type. PNG 1.0-1.2 only define the single type. */
+#define PNG_COMPRESSION_TYPE_BASE 0 /* Deflate method 8, 32K window */
+#define PNG_COMPRESSION_TYPE_DEFAULT PNG_COMPRESSION_TYPE_BASE
+
+/* This is for filter type. PNG 1.0-1.2 only define the single type. */
+#define PNG_FILTER_TYPE_BASE 0 /* Single row per-byte filtering */
+#define PNG_INTRAPIXEL_DIFFERENCING 64 /* Used only in MNG datastreams */
+#define PNG_FILTER_TYPE_DEFAULT PNG_FILTER_TYPE_BASE
+
+/* These are for the interlacing type. These values should NOT be changed. */
+#define PNG_INTERLACE_NONE 0 /* Non-interlaced image */
+#define PNG_INTERLACE_ADAM7 1 /* Adam7 interlacing */
+#define PNG_INTERLACE_LAST 2 /* Not a valid value */
+
+/* These are for the oFFs chunk. These values should NOT be changed. */
+#define PNG_OFFSET_PIXEL 0 /* Offset in pixels */
+#define PNG_OFFSET_MICROMETER 1 /* Offset in micrometers (1/10^6 meter) */
+#define PNG_OFFSET_LAST 2 /* Not a valid value */
+
+/* These are for the pCAL chunk. These values should NOT be changed. */
+#define PNG_EQUATION_LINEAR 0 /* Linear transformation */
+#define PNG_EQUATION_BASE_E 1 /* Exponential base e transform */
+#define PNG_EQUATION_ARBITRARY 2 /* Arbitrary base exponential transform */
+#define PNG_EQUATION_HYPERBOLIC 3 /* Hyperbolic sine transformation */
+#define PNG_EQUATION_LAST 4 /* Not a valid value */
+
+/* These are for the sCAL chunk. These values should NOT be changed. */
+#define PNG_SCALE_UNKNOWN 0 /* unknown unit (image scale) */
+#define PNG_SCALE_METER 1 /* meters per pixel */
+#define PNG_SCALE_RADIAN 2 /* radians per pixel */
+#define PNG_SCALE_LAST 3 /* Not a valid value */
+
+/* These are for the pHYs chunk. These values should NOT be changed. */
+#define PNG_RESOLUTION_UNKNOWN 0 /* pixels/unknown unit (aspect ratio) */
+#define PNG_RESOLUTION_METER 1 /* pixels/meter */
+#define PNG_RESOLUTION_LAST 2 /* Not a valid value */
+
+/* These are for the sRGB chunk. These values should NOT be changed. */
+#define PNG_sRGB_INTENT_PERCEPTUAL 0
+#define PNG_sRGB_INTENT_RELATIVE 1
+#define PNG_sRGB_INTENT_SATURATION 2
+#define PNG_sRGB_INTENT_ABSOLUTE 3
+#define PNG_sRGB_INTENT_LAST 4 /* Not a valid value */
+
+/* This is for text chunks */
+#define PNG_KEYWORD_MAX_LENGTH 79
+
+/* Maximum number of entries in PLTE/sPLT/tRNS arrays */
+#define PNG_MAX_PALETTE_LENGTH 256
+
+/* These determine if an ancillary chunk's data has been successfully read
+ * from the PNG header, or if the application has filled in the corresponding
+ * data in the info_struct to be written into the output file. The values
+ * of the PNG_INFO_<chunk> defines should NOT be changed.
+ */
+#define PNG_INFO_gAMA 0x0001
+#define PNG_INFO_sBIT 0x0002
+#define PNG_INFO_cHRM 0x0004
+#define PNG_INFO_PLTE 0x0008
+#define PNG_INFO_tRNS 0x0010
+#define PNG_INFO_bKGD 0x0020
+#define PNG_INFO_hIST 0x0040
+#define PNG_INFO_pHYs 0x0080
+#define PNG_INFO_oFFs 0x0100
+#define PNG_INFO_tIME 0x0200
+#define PNG_INFO_pCAL 0x0400
+#define PNG_INFO_sRGB 0x0800 /* GR-P, 0.96a */
+#define PNG_INFO_iCCP 0x1000 /* ESR, 1.0.6 */
+#define PNG_INFO_sPLT 0x2000 /* ESR, 1.0.6 */
+#define PNG_INFO_sCAL 0x4000 /* ESR, 1.0.6 */
+#define PNG_INFO_IDAT 0x8000L /* ESR, 1.0.6 */
+
+/* This is used for the transformation routines, as some of them
+ * change these values for the row. It also should enable using
+ * the routines for other purposes.
+ */
+typedef struct png_row_info_struct
+{
+ png_uint_32 width; /* width of row */
+ png_size_t rowbytes; /* number of bytes in row */
+ png_byte color_type; /* color type of row */
+ png_byte bit_depth; /* bit depth of row */
+ png_byte channels; /* number of channels (1, 2, 3, or 4) */
+ png_byte pixel_depth; /* bits per pixel (depth * channels) */
+} png_row_info;
+
+typedef png_row_info FAR * png_row_infop;
+typedef png_row_info FAR * FAR * png_row_infopp;
+
+/* These are the function types for the I/O functions and for the functions
+ * that allow the user to override the default I/O functions with his or her
+ * own. The png_error_ptr type should match that of user-supplied warning
+ * and error functions, while the png_rw_ptr type should match that of the
+ * user read/write data functions.
+ */
+typedef struct png_struct_def png_struct;
+typedef png_struct FAR * png_structp;
+
+typedef void (PNGAPI *png_error_ptr) PNGARG((png_structp, png_const_charp));
+typedef void (PNGAPI *png_rw_ptr) PNGARG((png_structp, png_bytep, png_size_t));
+typedef void (PNGAPI *png_flush_ptr) PNGARG((png_structp));
+typedef void (PNGAPI *png_read_status_ptr) PNGARG((png_structp, png_uint_32,
+ int));
+typedef void (PNGAPI *png_write_status_ptr) PNGARG((png_structp, png_uint_32,
+ int));
+
+#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
+typedef void (PNGAPI *png_progressive_info_ptr) PNGARG((png_structp, png_infop));
+typedef void (PNGAPI *png_progressive_end_ptr) PNGARG((png_structp, png_infop));
+typedef void (PNGAPI *png_progressive_row_ptr) PNGARG((png_structp, png_bytep,
+ png_uint_32, int));
+#endif
+
+#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
+ defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
+typedef void (PNGAPI *png_user_transform_ptr) PNGARG((png_structp,
+ png_row_infop, png_bytep));
+#endif
+
+#ifdef PNG_USER_CHUNKS_SUPPORTED
+typedef int (PNGAPI *png_user_chunk_ptr) PNGARG((png_structp, png_unknown_chunkp));
+#endif
+#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
+typedef void (PNGAPI *png_unknown_chunk_ptr) PNGARG((png_structp));
+#endif
+#ifdef PNG_SETJMP_SUPPORTED
+/* This must match the function definition in <setjmp.h>, and the
+ * application must include this before png.h to obtain the definition
+ * of jmp_buf.
+ */
+typedef void (PNGAPI *png_longjmp_ptr) PNGARG((jmp_buf, int));
+#endif
+
+/* Transform masks for the high-level interface */
+#define PNG_TRANSFORM_IDENTITY 0x0000 /* read and write */
+#define PNG_TRANSFORM_STRIP_16 0x0001 /* read only */
+#define PNG_TRANSFORM_STRIP_ALPHA 0x0002 /* read only */
+#define PNG_TRANSFORM_PACKING 0x0004 /* read and write */
+#define PNG_TRANSFORM_PACKSWAP 0x0008 /* read and write */
+#define PNG_TRANSFORM_EXPAND 0x0010 /* read only */
+#define PNG_TRANSFORM_INVERT_MONO 0x0020 /* read and write */
+#define PNG_TRANSFORM_SHIFT 0x0040 /* read and write */
+#define PNG_TRANSFORM_BGR 0x0080 /* read and write */
+#define PNG_TRANSFORM_SWAP_ALPHA 0x0100 /* read and write */
+#define PNG_TRANSFORM_SWAP_ENDIAN 0x0200 /* read and write */
+#define PNG_TRANSFORM_INVERT_ALPHA 0x0400 /* read and write */
+#define PNG_TRANSFORM_STRIP_FILLER 0x0800 /* write only */
+/* Added to libpng-1.2.34 */
+#define PNG_TRANSFORM_STRIP_FILLER_BEFORE PNG_TRANSFORM_STRIP_FILLER
+#define PNG_TRANSFORM_STRIP_FILLER_AFTER 0x1000 /* write only */
+/* Added to libpng-1.4.0 */
+#define PNG_TRANSFORM_GRAY_TO_RGB 0x2000 /* read only */
+
+/* Flags for MNG supported features */
+#define PNG_FLAG_MNG_EMPTY_PLTE 0x01
+#define PNG_FLAG_MNG_FILTER_64 0x04
+#define PNG_ALL_MNG_FEATURES 0x05
+
+typedef png_voidp (*png_malloc_ptr) PNGARG((png_structp, png_alloc_size_t));
+typedef void (*png_free_ptr) PNGARG((png_structp, png_voidp));
+
+/* The structure that holds the information to read and write PNG files.
+ * The only people who need to care about what is inside of this are the
+ * people who will be modifying the library for their own special needs.
+ * It should NOT be accessed directly by an application, except to store
+ * the jmp_buf.
+ */
+
+struct png_struct_def
+{
+#ifdef PNG_SETJMP_SUPPORTED
+ jmp_buf jmpbuf PNG_DEPSTRUCT; /* used in png_error */
+ png_longjmp_ptr longjmp_fn PNG_DEPSTRUCT;/* setjmp non-local goto function. */
+#endif
+ png_error_ptr error_fn PNG_DEPSTRUCT; /* function for printing errors and aborting */
+ png_error_ptr warning_fn PNG_DEPSTRUCT; /* function for printing warnings */
+ png_voidp error_ptr PNG_DEPSTRUCT; /* user supplied struct for error functions */
+ png_rw_ptr write_data_fn PNG_DEPSTRUCT; /* function for writing output data */
+ png_rw_ptr read_data_fn PNG_DEPSTRUCT; /* function for reading input data */
+ png_voidp io_ptr PNG_DEPSTRUCT; /* ptr to application struct for I/O functions */
+
+#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
+ png_user_transform_ptr read_user_transform_fn PNG_DEPSTRUCT; /* user read transform */
+#endif
+
+#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
+ png_user_transform_ptr write_user_transform_fn PNG_DEPSTRUCT; /* user write transform */
+#endif
+
+/* These were added in libpng-1.0.2 */
+#ifdef PNG_USER_TRANSFORM_PTR_SUPPORTED
+#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
+ defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
+ png_voidp user_transform_ptr PNG_DEPSTRUCT; /* user supplied struct for user transform */
+ png_byte user_transform_depth PNG_DEPSTRUCT; /* bit depth of user transformed pixels */
+ png_byte user_transform_channels PNG_DEPSTRUCT; /* channels in user transformed pixels */
+#endif
+#endif
+
+ png_uint_32 mode PNG_DEPSTRUCT; /* tells us where we are in the PNG file */
+ png_uint_32 flags PNG_DEPSTRUCT; /* flags indicating various things to libpng */
+ png_uint_32 transformations PNG_DEPSTRUCT; /* which transformations to perform */
+
+ z_stream zstream PNG_DEPSTRUCT; /* pointer to decompression structure (below) */
+ png_bytep zbuf PNG_DEPSTRUCT; /* buffer for zlib */
+ png_size_t zbuf_size PNG_DEPSTRUCT; /* size of zbuf */
+ int zlib_level PNG_DEPSTRUCT; /* holds zlib compression level */
+ int zlib_method PNG_DEPSTRUCT; /* holds zlib compression method */
+ int zlib_window_bits PNG_DEPSTRUCT; /* holds zlib compression window bits */
+ int zlib_mem_level PNG_DEPSTRUCT; /* holds zlib compression memory level */
+ int zlib_strategy PNG_DEPSTRUCT; /* holds zlib compression strategy */
+
+ png_uint_32 width PNG_DEPSTRUCT; /* width of image in pixels */
+ png_uint_32 height PNG_DEPSTRUCT; /* height of image in pixels */
+ png_uint_32 num_rows PNG_DEPSTRUCT; /* number of rows in current pass */
+ png_uint_32 usr_width PNG_DEPSTRUCT; /* width of row at start of write */
+ png_size_t rowbytes PNG_DEPSTRUCT; /* size of row in bytes */
+ png_size_t irowbytes PNG_DEPSTRUCT; /* size of current interlaced row in bytes */
+ png_uint_32 iwidth PNG_DEPSTRUCT; /* width of current interlaced row in pixels */
+ png_uint_32 row_number PNG_DEPSTRUCT; /* current row in interlace pass */
+ png_bytep prev_row PNG_DEPSTRUCT; /* buffer to save previous (unfiltered) row */
+ png_bytep row_buf PNG_DEPSTRUCT; /* buffer to save current (unfiltered) row */
+ png_bytep sub_row PNG_DEPSTRUCT; /* buffer to save "sub" row when filtering */
+ png_bytep up_row PNG_DEPSTRUCT; /* buffer to save "up" row when filtering */
+ png_bytep avg_row PNG_DEPSTRUCT; /* buffer to save "avg" row when filtering */
+ png_bytep paeth_row PNG_DEPSTRUCT; /* buffer to save "Paeth" row when filtering */
+ png_row_info row_info PNG_DEPSTRUCT; /* used for transformation routines */
+
+ png_uint_32 idat_size PNG_DEPSTRUCT; /* current IDAT size for read */
+ png_uint_32 crc PNG_DEPSTRUCT; /* current chunk CRC value */
+ png_colorp palette PNG_DEPSTRUCT; /* palette from the input file */
+ png_uint_16 num_palette PNG_DEPSTRUCT; /* number of color entries in palette */
+ png_uint_16 num_trans PNG_DEPSTRUCT; /* number of transparency values */
+ png_byte chunk_name[5] PNG_DEPSTRUCT; /* null-terminated name of current chunk */
+ png_byte compression PNG_DEPSTRUCT; /* file compression type (always 0) */
+ png_byte filter PNG_DEPSTRUCT; /* file filter type (always 0) */
+ png_byte interlaced PNG_DEPSTRUCT; /* PNG_INTERLACE_NONE, PNG_INTERLACE_ADAM7 */
+ png_byte pass PNG_DEPSTRUCT; /* current interlace pass (0 - 6) */
+ png_byte do_filter PNG_DEPSTRUCT; /* row filter flags (see PNG_FILTER_ below ) */
+ png_byte color_type PNG_DEPSTRUCT; /* color type of file */
+ png_byte bit_depth PNG_DEPSTRUCT; /* bit depth of file */
+ png_byte usr_bit_depth PNG_DEPSTRUCT; /* bit depth of users row */
+ png_byte pixel_depth PNG_DEPSTRUCT; /* number of bits per pixel */
+ png_byte channels PNG_DEPSTRUCT; /* number of channels in file */
+ png_byte usr_channels PNG_DEPSTRUCT; /* channels at start of write */
+ png_byte sig_bytes PNG_DEPSTRUCT; /* magic bytes read/written from start of file */
+
+#if defined(PNG_READ_FILLER_SUPPORTED) || defined(PNG_WRITE_FILLER_SUPPORTED)
+ png_uint_16 filler PNG_DEPSTRUCT; /* filler bytes for pixel expansion */
+#endif
+
+#ifdef PNG_bKGD_SUPPORTED
+ png_byte background_gamma_type PNG_DEPSTRUCT;
+# ifdef PNG_FLOATING_POINT_SUPPORTED
+ float background_gamma PNG_DEPSTRUCT;
+# endif
+ png_color_16 background PNG_DEPSTRUCT; /* background color in screen gamma space */
+#ifdef PNG_READ_GAMMA_SUPPORTED
+ png_color_16 background_1 PNG_DEPSTRUCT; /* background normalized to gamma 1.0 */
+#endif
+#endif /* PNG_bKGD_SUPPORTED */
+
+#ifdef PNG_WRITE_FLUSH_SUPPORTED
+ png_flush_ptr output_flush_fn PNG_DEPSTRUCT; /* Function for flushing output */
+ png_uint_32 flush_dist PNG_DEPSTRUCT; /* how many rows apart to flush, 0 - no flush */
+ png_uint_32 flush_rows PNG_DEPSTRUCT; /* number of rows written since last flush */
+#endif
+
+#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
+ int gamma_shift PNG_DEPSTRUCT; /* number of "insignificant" bits 16-bit gamma */
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+ float gamma PNG_DEPSTRUCT; /* file gamma value */
+ float screen_gamma PNG_DEPSTRUCT; /* screen gamma value (display_exponent) */
+#endif
+#endif
+
+#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
+ png_bytep gamma_table PNG_DEPSTRUCT; /* gamma table for 8-bit depth files */
+ png_bytep gamma_from_1 PNG_DEPSTRUCT; /* converts from 1.0 to screen */
+ png_bytep gamma_to_1 PNG_DEPSTRUCT; /* converts from file to 1.0 */
+ png_uint_16pp gamma_16_table PNG_DEPSTRUCT; /* gamma table for 16-bit depth files */
+ png_uint_16pp gamma_16_from_1 PNG_DEPSTRUCT; /* converts from 1.0 to screen */
+ png_uint_16pp gamma_16_to_1 PNG_DEPSTRUCT; /* converts from file to 1.0 */
+#endif
+
+#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_sBIT_SUPPORTED)
+ png_color_8 sig_bit PNG_DEPSTRUCT; /* significant bits in each available channel */
+#endif
+
+#if defined(PNG_READ_SHIFT_SUPPORTED) || defined(PNG_WRITE_SHIFT_SUPPORTED)
+ png_color_8 shift PNG_DEPSTRUCT; /* shift for significant bit tranformation */
+#endif
+
+#if defined(PNG_tRNS_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED) \
+ || defined(PNG_READ_EXPAND_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
+ png_bytep trans_alpha PNG_DEPSTRUCT; /* alpha values for paletted files */
+ png_color_16 trans_color PNG_DEPSTRUCT; /* transparent color for non-paletted files */
+#endif
+
+ png_read_status_ptr read_row_fn PNG_DEPSTRUCT; /* called after each row is decoded */
+ png_write_status_ptr write_row_fn PNG_DEPSTRUCT; /* called after each row is encoded */
+#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
+ png_progressive_info_ptr info_fn PNG_DEPSTRUCT; /* called after header data fully read */
+ png_progressive_row_ptr row_fn PNG_DEPSTRUCT; /* called after each prog. row is decoded */
+ png_progressive_end_ptr end_fn PNG_DEPSTRUCT; /* called after image is complete */
+ png_bytep save_buffer_ptr PNG_DEPSTRUCT; /* current location in save_buffer */
+ png_bytep save_buffer PNG_DEPSTRUCT; /* buffer for previously read data */
+ png_bytep current_buffer_ptr PNG_DEPSTRUCT; /* current location in current_buffer */
+ png_bytep current_buffer PNG_DEPSTRUCT; /* buffer for recently used data */
+ png_uint_32 push_length PNG_DEPSTRUCT; /* size of current input chunk */
+ png_uint_32 skip_length PNG_DEPSTRUCT; /* bytes to skip in input data */
+ png_size_t save_buffer_size PNG_DEPSTRUCT; /* amount of data now in save_buffer */
+ png_size_t save_buffer_max PNG_DEPSTRUCT; /* total size of save_buffer */
+ png_size_t buffer_size PNG_DEPSTRUCT; /* total amount of available input data */
+ png_size_t current_buffer_size PNG_DEPSTRUCT; /* amount of data now in current_buffer */
+ int process_mode PNG_DEPSTRUCT; /* what push library is currently doing */
+ int cur_palette PNG_DEPSTRUCT; /* current push library palette index */
+
+# ifdef PNG_TEXT_SUPPORTED
+ png_size_t current_text_size PNG_DEPSTRUCT; /* current size of text input data */
+ png_size_t current_text_left PNG_DEPSTRUCT; /* how much text left to read in input */
+ png_charp current_text PNG_DEPSTRUCT; /* current text chunk buffer */
+ png_charp current_text_ptr PNG_DEPSTRUCT; /* current location in current_text */
+# endif /* PNG_PROGRESSIVE_READ_SUPPORTED && PNG_TEXT_SUPPORTED */
+
+#endif /* PNG_PROGRESSIVE_READ_SUPPORTED */
+
+#if defined(__TURBOC__) && !defined(_Windows) && !defined(__FLAT__)
+/* For the Borland special 64K segment handler */
+ png_bytepp offset_table_ptr PNG_DEPSTRUCT;
+ png_bytep offset_table PNG_DEPSTRUCT;
+ png_uint_16 offset_table_number PNG_DEPSTRUCT;
+ png_uint_16 offset_table_count PNG_DEPSTRUCT;
+ png_uint_16 offset_table_count_free PNG_DEPSTRUCT;
+#endif
+
+#ifdef PNG_READ_DITHER_SUPPORTED
+ png_bytep palette_lookup PNG_DEPSTRUCT; /* lookup table for dithering */
+ png_bytep dither_index PNG_DEPSTRUCT; /* index translation for palette files */
+#endif
+
+#if defined(PNG_READ_DITHER_SUPPORTED) || defined(PNG_hIST_SUPPORTED)
+ png_uint_16p hist PNG_DEPSTRUCT; /* histogram */
+#endif
+
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
+ png_byte heuristic_method PNG_DEPSTRUCT; /* heuristic for row filter selection */
+ png_byte num_prev_filters PNG_DEPSTRUCT; /* number of weights for previous rows */
+ png_bytep prev_filters PNG_DEPSTRUCT; /* filter type(s) of previous row(s) */
+ png_uint_16p filter_weights PNG_DEPSTRUCT; /* weight(s) for previous line(s) */
+ png_uint_16p inv_filter_weights PNG_DEPSTRUCT; /* 1/weight(s) for previous line(s) */
+ png_uint_16p filter_costs PNG_DEPSTRUCT; /* relative filter calculation cost */
+ png_uint_16p inv_filter_costs PNG_DEPSTRUCT; /* 1/relative filter calculation cost */
+#endif
+
+#ifdef PNG_TIME_RFC1123_SUPPORTED
+ png_charp time_buffer PNG_DEPSTRUCT; /* String to hold RFC 1123 time text */
+#endif
+
+/* New members added in libpng-1.0.6 */
+
+ png_uint_32 free_me PNG_DEPSTRUCT; /* flags items libpng is responsible for freeing */
+
+#ifdef PNG_USER_CHUNKS_SUPPORTED
+ png_voidp user_chunk_ptr PNG_DEPSTRUCT;
+ png_user_chunk_ptr read_user_chunk_fn PNG_DEPSTRUCT; /* user read chunk handler */
+#endif
+
+#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
+ int num_chunk_list PNG_DEPSTRUCT;
+ png_bytep chunk_list PNG_DEPSTRUCT;
+#endif
+
+/* New members added in libpng-1.0.3 */
+#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
+ png_byte rgb_to_gray_status PNG_DEPSTRUCT;
+ /* These were changed from png_byte in libpng-1.0.6 */
+ png_uint_16 rgb_to_gray_red_coeff PNG_DEPSTRUCT;
+ png_uint_16 rgb_to_gray_green_coeff PNG_DEPSTRUCT;
+ png_uint_16 rgb_to_gray_blue_coeff PNG_DEPSTRUCT;
+#endif
+
+/* New member added in libpng-1.0.4 (renamed in 1.0.9) */
+#if defined(PNG_MNG_FEATURES_SUPPORTED) || \
+ defined(PNG_READ_EMPTY_PLTE_SUPPORTED) || \
+ defined(PNG_WRITE_EMPTY_PLTE_SUPPORTED)
+/* Changed from png_byte to png_uint_32 at version 1.2.0 */
+ png_uint_32 mng_features_permitted PNG_DEPSTRUCT;
+#endif
+
+/* New member added in libpng-1.0.7 */
+#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
+ png_fixed_point int_gamma PNG_DEPSTRUCT;
+#endif
+
+/* New member added in libpng-1.0.9, ifdef'ed out in 1.0.12, enabled in 1.2.0 */
+#ifdef PNG_MNG_FEATURES_SUPPORTED
+ png_byte filter_type PNG_DEPSTRUCT;
+#endif
+
+/* New members added in libpng-1.2.0 */
+
+/* New members added in libpng-1.0.2 but first enabled by default in 1.2.0 */
+#ifdef PNG_USER_MEM_SUPPORTED
+ png_voidp mem_ptr PNG_DEPSTRUCT; /* user supplied struct for mem functions */
+ png_malloc_ptr malloc_fn PNG_DEPSTRUCT; /* function for allocating memory */
+ png_free_ptr free_fn PNG_DEPSTRUCT; /* function for freeing memory */
+#endif
+
+/* New member added in libpng-1.0.13 and 1.2.0 */
+ png_bytep big_row_buf PNG_DEPSTRUCT; /* buffer to save current (unfiltered) row */
+
+#ifdef PNG_READ_DITHER_SUPPORTED
+/* The following three members were added at version 1.0.14 and 1.2.4 */
+ png_bytep dither_sort PNG_DEPSTRUCT; /* working sort array */
+ png_bytep index_to_palette PNG_DEPSTRUCT; /* where the original index currently is */
+ /* in the palette */
+ png_bytep palette_to_index PNG_DEPSTRUCT; /* which original index points to this */
+ /* palette color */
+#endif
+
+/* New members added in libpng-1.0.16 and 1.2.6 */
+ png_byte compression_type PNG_DEPSTRUCT;
+
+#ifdef PNG_SET_USER_LIMITS_SUPPORTED
+ png_uint_32 user_width_max PNG_DEPSTRUCT;
+ png_uint_32 user_height_max PNG_DEPSTRUCT;
+ /* Added in libpng-1.4.0: Total number of sPLT, text, and unknown
+ * chunks that can be stored (0x7fffffff means unlimited).
+ */
+ png_uint_32 user_chunk_cache_max PNG_DEPSTRUCT;
+#endif
+
+/* New member added in libpng-1.0.25 and 1.2.17 */
+#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
+ /* Storage for unknown chunk that the library doesn't recognize. */
+ png_unknown_chunk unknown_chunk PNG_DEPSTRUCT;
+#endif
+
+/* New members added in libpng-1.2.26 */
+ png_uint_32 old_big_row_buf_size PNG_DEPSTRUCT;
+ png_uint_32 old_prev_row_size PNG_DEPSTRUCT;
+
+/* New member added in libpng-1.2.30 */
+ png_charp chunkdata PNG_DEPSTRUCT; /* buffer for reading chunk data */
+
+/* New member added in libpng-1.4.0 */
+#ifdef PNG_IO_STATE_SUPPORTED
+ png_uint_32 io_state PNG_DEPSTRUCT;
+#endif
+};
+
+
+/* This triggers a compiler error in png.c, if png.c and png.h
+ * do not agree upon the version number.
+ */
+typedef png_structp version_1_4_0;
+
+typedef png_struct FAR * FAR * png_structpp;
+
+/* Here are the function definitions most commonly used. This is not
+ * the place to find out how to use libpng. See libpng.txt for the
+ * full explanation, see example.c for the summary. This just provides
+ * a simple one line description of the use of each function.
+ */
+
+/* Returns the version number of the library */
+extern PNG_EXPORT(png_uint_32,png_access_version_number) PNGARG((void));
+
+/* Tell lib we have already handled the first <num_bytes> magic bytes.
+ * Handling more than 8 bytes from the beginning of the file is an error.
+ */
+extern PNG_EXPORT(void,png_set_sig_bytes) PNGARG((png_structp png_ptr,
+ int num_bytes));
+
+/* Check sig[start] through sig[start + num_to_check - 1] to see if it's a
+ * PNG file. Returns zero if the supplied bytes match the 8-byte PNG
+ * signature, and non-zero otherwise. Having num_to_check == 0 or
+ * start > 7 will always fail (ie return non-zero).
+ */
+extern PNG_EXPORT(int,png_sig_cmp) PNGARG((png_bytep sig, png_size_t start,
+ png_size_t num_to_check));
+
+/* Allocate and initialize png_ptr struct for reading, and any other memory. */
+extern PNG_EXPORT(png_structp,png_create_read_struct)
+ PNGARG((png_const_charp user_png_ver, png_voidp error_ptr,
+ png_error_ptr error_fn, png_error_ptr warn_fn)) PNG_ALLOCATED;
+
+/* Allocate and initialize png_ptr struct for writing, and any other memory */
+extern PNG_EXPORT(png_structp,png_create_write_struct)
+ PNGARG((png_const_charp user_png_ver, png_voidp error_ptr,
+ png_error_ptr error_fn, png_error_ptr warn_fn)) PNG_ALLOCATED;
+
+#ifdef PNG_WRITE_SUPPORTED
+extern PNG_EXPORT(png_size_t,png_get_compression_buffer_size)
+ PNGARG((png_structp png_ptr));
+#endif
+
+#ifdef PNG_WRITE_SUPPORTED
+extern PNG_EXPORT(void,png_set_compression_buffer_size)
+ PNGARG((png_structp png_ptr, png_size_t size));
+#endif
+
+/* Moved from pngconf.h in 1.4.0 and modified to ensure setjmp/longjmp
+ * match up.
+ */
+#ifdef PNG_SETJMP_SUPPORTED
+/* This function returns the jmp_buf built in to *png_ptr. It must be
+ * supplied with an appropriate 'longjmp' function to use on that jmp_buf
+ * unless the default error function is overridden in which case NULL is
+ * acceptable. The size of the jmp_buf is checked against the actual size
+ * allocated by the library - the call will return NULL on a mismatch
+ * indicating an ABI mismatch.
+ */
+extern PNG_EXPORT(jmp_buf*, png_set_longjmp_fn)
+ PNGARG((png_structp png_ptr, png_longjmp_ptr longjmp_fn, size_t jmp_buf_size));
+# define png_jmpbuf(png_ptr) \
+ (*png_set_longjmp_fn((png_ptr), longjmp, sizeof (jmp_buf)))
+#else
+# define png_jmpbuf(png_ptr) \
+ (LIBPNG_WAS_COMPILED_WITH__PNG_NO_SETJMP)
+#endif
+
+/* Reset the compression stream */
+extern PNG_EXPORT(int,png_reset_zstream) PNGARG((png_structp png_ptr));
+
+/* New functions added in libpng-1.0.2 (not enabled by default until 1.2.0) */
+#ifdef PNG_USER_MEM_SUPPORTED
+extern PNG_EXPORT(png_structp,png_create_read_struct_2)
+ PNGARG((png_const_charp user_png_ver, png_voidp error_ptr,
+ png_error_ptr error_fn, png_error_ptr warn_fn, png_voidp mem_ptr,
+ png_malloc_ptr malloc_fn, png_free_ptr free_fn)) PNG_ALLOCATED;
+extern PNG_EXPORT(png_structp,png_create_write_struct_2)
+ PNGARG((png_const_charp user_png_ver, png_voidp error_ptr,
+ png_error_ptr error_fn, png_error_ptr warn_fn, png_voidp mem_ptr,
+ png_malloc_ptr malloc_fn, png_free_ptr free_fn)) PNG_ALLOCATED;
+#endif
+
+/* Write the PNG file signature. */
+extern PNG_EXPORT(void,png_write_sig) PNGARG((png_structp png_ptr));
+
+/* Write a PNG chunk - size, type, (optional) data, CRC. */
+extern PNG_EXPORT(void,png_write_chunk) PNGARG((png_structp png_ptr,
+ png_bytep chunk_name, png_bytep data, png_size_t length));
+
+/* Write the start of a PNG chunk - length and chunk name. */
+extern PNG_EXPORT(void,png_write_chunk_start) PNGARG((png_structp png_ptr,
+ png_bytep chunk_name, png_uint_32 length));
+
+/* Write the data of a PNG chunk started with png_write_chunk_start(). */
+extern PNG_EXPORT(void,png_write_chunk_data) PNGARG((png_structp png_ptr,
+ png_bytep data, png_size_t length));
+
+/* Finish a chunk started with png_write_chunk_start() (includes CRC). */
+extern PNG_EXPORT(void,png_write_chunk_end) PNGARG((png_structp png_ptr));
+
+/* Allocate and initialize the info structure */
+extern PNG_EXPORT(png_infop,png_create_info_struct)
+ PNGARG((png_structp png_ptr)) PNG_ALLOCATED;
+
+extern PNG_EXPORT(void,png_info_init_3) PNGARG((png_infopp info_ptr,
+ png_size_t png_info_struct_size));
+
+/* Writes all the PNG information before the image. */
+extern PNG_EXPORT(void,png_write_info_before_PLTE) PNGARG((png_structp png_ptr,
+ png_infop info_ptr));
+extern PNG_EXPORT(void,png_write_info) PNGARG((png_structp png_ptr,
+ png_infop info_ptr));
+
+#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
+/* Read the information before the actual image data. */
+extern PNG_EXPORT(void,png_read_info) PNGARG((png_structp png_ptr,
+ png_infop info_ptr));
+#endif
+
+#ifdef PNG_TIME_RFC1123_SUPPORTED
+extern PNG_EXPORT(png_charp,png_convert_to_rfc1123)
+ PNGARG((png_structp png_ptr, png_timep ptime));
+#endif
+
+#ifdef PNG_CONVERT_tIME_SUPPORTED
+/* Convert from a struct tm to png_time */
+extern PNG_EXPORT(void,png_convert_from_struct_tm) PNGARG((png_timep ptime,
+ struct tm FAR * ttime));
+
+/* Convert from time_t to png_time. Uses gmtime() */
+extern PNG_EXPORT(void,png_convert_from_time_t) PNGARG((png_timep ptime,
+ time_t ttime));
+#endif /* PNG_CONVERT_tIME_SUPPORTED */
+
+#ifdef PNG_READ_EXPAND_SUPPORTED
+/* Expand data to 24-bit RGB, or 8-bit grayscale, with alpha if available. */
+extern PNG_EXPORT(void,png_set_expand) PNGARG((png_structp png_ptr));
+extern PNG_EXPORT(void,png_set_expand_gray_1_2_4_to_8) PNGARG((png_structp
+ png_ptr));
+extern PNG_EXPORT(void,png_set_palette_to_rgb) PNGARG((png_structp png_ptr));
+extern PNG_EXPORT(void,png_set_tRNS_to_alpha) PNGARG((png_structp png_ptr));
+#endif
+
+#if defined(PNG_READ_BGR_SUPPORTED) || defined(PNG_WRITE_BGR_SUPPORTED)
+/* Use blue, green, red order for pixels. */
+extern PNG_EXPORT(void,png_set_bgr) PNGARG((png_structp png_ptr));
+#endif
+
+#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED
+/* Expand the grayscale to 24-bit RGB if necessary. */
+extern PNG_EXPORT(void,png_set_gray_to_rgb) PNGARG((png_structp png_ptr));
+#endif
+
+#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
+/* Reduce RGB to grayscale. */
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+extern PNG_EXPORT(void,png_set_rgb_to_gray) PNGARG((png_structp png_ptr,
+ int error_action, double red, double green ));
+#endif
+extern PNG_EXPORT(void,png_set_rgb_to_gray_fixed) PNGARG((png_structp png_ptr,
+ int error_action, png_fixed_point red, png_fixed_point green ));
+extern PNG_EXPORT(png_byte,png_get_rgb_to_gray_status) PNGARG((png_structp
+ png_ptr));
+#endif
+
+extern PNG_EXPORT(void,png_build_grayscale_palette) PNGARG((int bit_depth,
+ png_colorp palette));
+
+#ifdef PNG_READ_STRIP_ALPHA_SUPPORTED
+extern PNG_EXPORT(void,png_set_strip_alpha) PNGARG((png_structp png_ptr));
+#endif
+
+#if defined(PNG_READ_SWAP_ALPHA_SUPPORTED) || \
+ defined(PNG_WRITE_SWAP_ALPHA_SUPPORTED)
+extern PNG_EXPORT(void,png_set_swap_alpha) PNGARG((png_structp png_ptr));
+#endif
+
+#if defined(PNG_READ_INVERT_ALPHA_SUPPORTED) || \
+ defined(PNG_WRITE_INVERT_ALPHA_SUPPORTED)
+extern PNG_EXPORT(void,png_set_invert_alpha) PNGARG((png_structp png_ptr));
+#endif
+
+#if defined(PNG_READ_FILLER_SUPPORTED) || defined(PNG_WRITE_FILLER_SUPPORTED)
+/* Add a filler byte to 8-bit Gray or 24-bit RGB images. */
+extern PNG_EXPORT(void,png_set_filler) PNGARG((png_structp png_ptr,
+ png_uint_32 filler, int flags));
+/* The values of the PNG_FILLER_ defines should NOT be changed */
+#define PNG_FILLER_BEFORE 0
+#define PNG_FILLER_AFTER 1
+/* Add an alpha byte to 8-bit Gray or 24-bit RGB images. */
+extern PNG_EXPORT(void,png_set_add_alpha) PNGARG((png_structp png_ptr,
+ png_uint_32 filler, int flags));
+#endif /* PNG_READ_FILLER_SUPPORTED || PNG_WRITE_FILLER_SUPPORTED */
+
+#if defined(PNG_READ_SWAP_SUPPORTED) || defined(PNG_WRITE_SWAP_SUPPORTED)
+/* Swap bytes in 16-bit depth files. */
+extern PNG_EXPORT(void,png_set_swap) PNGARG((png_structp png_ptr));
+#endif
+
+#if defined(PNG_READ_PACK_SUPPORTED) || defined(PNG_WRITE_PACK_SUPPORTED)
+/* Use 1 byte per pixel in 1, 2, or 4-bit depth files. */
+extern PNG_EXPORT(void,png_set_packing) PNGARG((png_structp png_ptr));
+#endif
+
+#if defined(PNG_READ_PACKSWAP_SUPPORTED) || defined(PNG_WRITE_PACKSWAP_SUPPORTED)
+/* Swap packing order of pixels in bytes. */
+extern PNG_EXPORT(void,png_set_packswap) PNGARG((png_structp png_ptr));
+#endif
+
+#if defined(PNG_READ_SHIFT_SUPPORTED) || defined(PNG_WRITE_SHIFT_SUPPORTED)
+/* Converts files to legal bit depths. */
+extern PNG_EXPORT(void,png_set_shift) PNGARG((png_structp png_ptr,
+ png_color_8p true_bits));
+#endif
+
+#if defined(PNG_READ_INTERLACING_SUPPORTED) || \
+ defined(PNG_WRITE_INTERLACING_SUPPORTED)
+/* Have the code handle the interlacing. Returns the number of passes. */
+extern PNG_EXPORT(int,png_set_interlace_handling) PNGARG((png_structp png_ptr));
+#endif
+
+#if defined(PNG_READ_INVERT_SUPPORTED) || defined(PNG_WRITE_INVERT_SUPPORTED)
+/* Invert monochrome files */
+extern PNG_EXPORT(void,png_set_invert_mono) PNGARG((png_structp png_ptr));
+#endif
+
+#ifdef PNG_READ_BACKGROUND_SUPPORTED
+/* Handle alpha and tRNS by replacing with a background color. */
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+extern PNG_EXPORT(void,png_set_background) PNGARG((png_structp png_ptr,
+ png_color_16p background_color, int background_gamma_code,
+ int need_expand, double background_gamma));
+#endif
+#define PNG_BACKGROUND_GAMMA_UNKNOWN 0
+#define PNG_BACKGROUND_GAMMA_SCREEN 1
+#define PNG_BACKGROUND_GAMMA_FILE 2
+#define PNG_BACKGROUND_GAMMA_UNIQUE 3
+#endif
+
+#ifdef PNG_READ_16_TO_8_SUPPORTED
+/* Strip the second byte of information from a 16-bit depth file. */
+extern PNG_EXPORT(void,png_set_strip_16) PNGARG((png_structp png_ptr));
+#endif
+
+#ifdef PNG_READ_DITHER_SUPPORTED
+/* Turn on dithering, and reduce the palette to the number of colors available. */
+extern PNG_EXPORT(void,png_set_dither) PNGARG((png_structp png_ptr,
+ png_colorp palette, int num_palette, int maximum_colors,
+ png_uint_16p histogram, int full_dither));
+#endif
+
+#ifdef PNG_READ_GAMMA_SUPPORTED
+/* Handle gamma correction. Screen_gamma=(display_exponent) */
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+extern PNG_EXPORT(void,png_set_gamma) PNGARG((png_structp png_ptr,
+ double screen_gamma, double default_file_gamma));
+#endif
+#endif
+
+
+#ifdef PNG_WRITE_FLUSH_SUPPORTED
+/* Set how many lines between output flushes - 0 for no flushing */
+extern PNG_EXPORT(void,png_set_flush) PNGARG((png_structp png_ptr, int nrows));
+/* Flush the current PNG output buffer */
+extern PNG_EXPORT(void,png_write_flush) PNGARG((png_structp png_ptr));
+#endif
+
+/* Optional update palette with requested transformations */
+extern PNG_EXPORT(void,png_start_read_image) PNGARG((png_structp png_ptr));
+
+/* Optional call to update the users info structure */
+extern PNG_EXPORT(void,png_read_update_info) PNGARG((png_structp png_ptr,
+ png_infop info_ptr));
+
+#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
+/* Read one or more rows of image data. */
+extern PNG_EXPORT(void,png_read_rows) PNGARG((png_structp png_ptr,
+ png_bytepp row, png_bytepp display_row, png_uint_32 num_rows));
+#endif
+
+#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
+/* Read a row of data. */
+extern PNG_EXPORT(void,png_read_row) PNGARG((png_structp png_ptr,
+ png_bytep row,
+ png_bytep display_row));
+#endif
+
+#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
+/* Read the whole image into memory at once. */
+extern PNG_EXPORT(void,png_read_image) PNGARG((png_structp png_ptr,
+ png_bytepp image));
+#endif
+
+/* Write a row of image data */
+extern PNG_EXPORT(void,png_write_row) PNGARG((png_structp png_ptr,
+ png_bytep row));
+
+/* Write a few rows of image data */
+extern PNG_EXPORT(void,png_write_rows) PNGARG((png_structp png_ptr,
+ png_bytepp row, png_uint_32 num_rows));
+
+/* Write the image data */
+extern PNG_EXPORT(void,png_write_image) PNGARG((png_structp png_ptr,
+ png_bytepp image));
+
+/* Write the end of the PNG file. */
+extern PNG_EXPORT(void,png_write_end) PNGARG((png_structp png_ptr,
+ png_infop info_ptr));
+
+#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
+/* Read the end of the PNG file. */
+extern PNG_EXPORT(void,png_read_end) PNGARG((png_structp png_ptr,
+ png_infop info_ptr));
+#endif
+
+/* Free any memory associated with the png_info_struct */
+extern PNG_EXPORT(void,png_destroy_info_struct) PNGARG((png_structp png_ptr,
+ png_infopp info_ptr_ptr));
+
+/* Free any memory associated with the png_struct and the png_info_structs */
+extern PNG_EXPORT(void,png_destroy_read_struct) PNGARG((png_structpp
+ png_ptr_ptr, png_infopp info_ptr_ptr, png_infopp end_info_ptr_ptr));
+
+/* Free any memory associated with the png_struct and the png_info_structs */
+extern PNG_EXPORT(void,png_destroy_write_struct)
+ PNGARG((png_structpp png_ptr_ptr, png_infopp info_ptr_ptr));
+
+/* Set the libpng method of handling chunk CRC errors */
+extern PNG_EXPORT(void,png_set_crc_action) PNGARG((png_structp png_ptr,
+ int crit_action, int ancil_action));
+
+/* Values for png_set_crc_action() to say how to handle CRC errors in
+ * ancillary and critical chunks, and whether to use the data contained
+ * therein. Note that it is impossible to "discard" data in a critical
+ * chunk. For versions prior to 0.90, the action was always error/quit,
+ * whereas in version 0.90 and later, the action for CRC errors in ancillary
+ * chunks is warn/discard. These values should NOT be changed.
+ *
+ * value action:critical action:ancillary
+ */
+#define PNG_CRC_DEFAULT 0 /* error/quit warn/discard data */
+#define PNG_CRC_ERROR_QUIT 1 /* error/quit error/quit */
+#define PNG_CRC_WARN_DISCARD 2 /* (INVALID) warn/discard data */
+#define PNG_CRC_WARN_USE 3 /* warn/use data warn/use data */
+#define PNG_CRC_QUIET_USE 4 /* quiet/use data quiet/use data */
+#define PNG_CRC_NO_CHANGE 5 /* use current value use current value */
+
+/* These functions give the user control over the scan-line filtering in
+ * libpng and the compression methods used by zlib. These functions are
+ * mainly useful for testing, as the defaults should work with most users.
+ * Those users who are tight on memory or want faster performance at the
+ * expense of compression can modify them. See the compression library
+ * header file (zlib.h) for an explination of the compression functions.
+ */
+
+/* Set the filtering method(s) used by libpng. Currently, the only valid
+ * value for "method" is 0.
+ */
+extern PNG_EXPORT(void,png_set_filter) PNGARG((png_structp png_ptr, int method,
+ int filters));
+
+/* Flags for png_set_filter() to say which filters to use. The flags
+ * are chosen so that they don't conflict with real filter types
+ * below, in case they are supplied instead of the #defined constants.
+ * These values should NOT be changed.
+ */
+#define PNG_NO_FILTERS 0x00
+#define PNG_FILTER_NONE 0x08
+#define PNG_FILTER_SUB 0x10
+#define PNG_FILTER_UP 0x20
+#define PNG_FILTER_AVG 0x40
+#define PNG_FILTER_PAETH 0x80
+#define PNG_ALL_FILTERS (PNG_FILTER_NONE | PNG_FILTER_SUB | PNG_FILTER_UP | \
+ PNG_FILTER_AVG | PNG_FILTER_PAETH)
+
+/* Filter values (not flags) - used in pngwrite.c, pngwutil.c for now.
+ * These defines should NOT be changed.
+ */
+#define PNG_FILTER_VALUE_NONE 0
+#define PNG_FILTER_VALUE_SUB 1
+#define PNG_FILTER_VALUE_UP 2
+#define PNG_FILTER_VALUE_AVG 3
+#define PNG_FILTER_VALUE_PAETH 4
+#define PNG_FILTER_VALUE_LAST 5
+
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED /* EXPERIMENTAL */
+/* The "heuristic_method" is given by one of the PNG_FILTER_HEURISTIC_
+ * defines, either the default (minimum-sum-of-absolute-differences), or
+ * the experimental method (weighted-minimum-sum-of-absolute-differences).
+ *
+ * Weights are factors >= 1.0, indicating how important it is to keep the
+ * filter type consistent between rows. Larger numbers mean the current
+ * filter is that many times as likely to be the same as the "num_weights"
+ * previous filters. This is cumulative for each previous row with a weight.
+ * There needs to be "num_weights" values in "filter_weights", or it can be
+ * NULL if the weights aren't being specified. Weights have no influence on
+ * the selection of the first row filter. Well chosen weights can (in theory)
+ * improve the compression for a given image.
+ *
+ * Costs are factors >= 1.0 indicating the relative decoding costs of a
+ * filter type. Higher costs indicate more decoding expense, and are
+ * therefore less likely to be selected over a filter with lower computational
+ * costs. There needs to be a value in "filter_costs" for each valid filter
+ * type (given by PNG_FILTER_VALUE_LAST), or it can be NULL if you aren't
+ * setting the costs. Costs try to improve the speed of decompression without
+ * unduly increasing the compressed image size.
+ *
+ * A negative weight or cost indicates the default value is to be used, and
+ * values in the range [0.0, 1.0) indicate the value is to remain unchanged.
+ * The default values for both weights and costs are currently 1.0, but may
+ * change if good general weighting/cost heuristics can be found. If both
+ * the weights and costs are set to 1.0, this degenerates the WEIGHTED method
+ * to the UNWEIGHTED method, but with added encoding time/computation.
+ */
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+extern PNG_EXPORT(void,png_set_filter_heuristics) PNGARG((png_structp png_ptr,
+ int heuristic_method, int num_weights, png_doublep filter_weights,
+ png_doublep filter_costs));
+#endif
+#endif /* PNG_WRITE_WEIGHTED_FILTER_SUPPORTED */
+
+/* Heuristic used for row filter selection. These defines should NOT be
+ * changed.
+ */
+#define PNG_FILTER_HEURISTIC_DEFAULT 0 /* Currently "UNWEIGHTED" */
+#define PNG_FILTER_HEURISTIC_UNWEIGHTED 1 /* Used by libpng < 0.95 */
+#define PNG_FILTER_HEURISTIC_WEIGHTED 2 /* Experimental feature */
+#define PNG_FILTER_HEURISTIC_LAST 3 /* Not a valid value */
+
+/* Set the library compression level. Currently, valid values range from
+ * 0 - 9, corresponding directly to the zlib compression levels 0 - 9
+ * (0 - no compression, 9 - "maximal" compression). Note that tests have
+ * shown that zlib compression levels 3-6 usually perform as well as level 9
+ * for PNG images, and do considerably fewer caclulations. In the future,
+ * these values may not correspond directly to the zlib compression levels.
+ */
+extern PNG_EXPORT(void,png_set_compression_level) PNGARG((png_structp png_ptr,
+ int level));
+
+extern PNG_EXPORT(void,png_set_compression_mem_level)
+ PNGARG((png_structp png_ptr, int mem_level));
+
+extern PNG_EXPORT(void,png_set_compression_strategy)
+ PNGARG((png_structp png_ptr, int strategy));
+
+extern PNG_EXPORT(void,png_set_compression_window_bits)
+ PNGARG((png_structp png_ptr, int window_bits));
+
+extern PNG_EXPORT(void,png_set_compression_method) PNGARG((png_structp png_ptr,
+ int method));
+
+/* These next functions are called for input/output, memory, and error
+ * handling. They are in the file pngrio.c, pngwio.c, and pngerror.c,
+ * and call standard C I/O routines such as fread(), fwrite(), and
+ * fprintf(). These functions can be made to use other I/O routines
+ * at run time for those applications that need to handle I/O in a
+ * different manner by calling png_set_???_fn(). See libpng.txt for
+ * more information.
+ */
+
+#ifdef PNG_STDIO_SUPPORTED
+/* Initialize the input/output for the PNG file to the default functions. */
+extern PNG_EXPORT(void,png_init_io) PNGARG((png_structp png_ptr, png_FILE_p fp));
+#endif
+
+/* Replace the (error and abort), and warning functions with user
+ * supplied functions. If no messages are to be printed you must still
+ * write and use replacement functions. The replacement error_fn should
+ * still do a longjmp to the last setjmp location if you are using this
+ * method of error handling. If error_fn or warning_fn is NULL, the
+ * default function will be used.
+ */
+
+extern PNG_EXPORT(void,png_set_error_fn) PNGARG((png_structp png_ptr,
+ png_voidp error_ptr, png_error_ptr error_fn, png_error_ptr warning_fn));
+
+/* Return the user pointer associated with the error functions */
+extern PNG_EXPORT(png_voidp,png_get_error_ptr) PNGARG((png_structp png_ptr));
+
+/* Replace the default data output functions with a user supplied one(s).
+ * If buffered output is not used, then output_flush_fn can be set to NULL.
+ * If PNG_WRITE_FLUSH_SUPPORTED is not defined at libpng compile time
+ * output_flush_fn will be ignored (and thus can be NULL).
+ * It is probably a mistake to use NULL for output_flush_fn if
+ * write_data_fn is not also NULL unless you have built libpng with
+ * PNG_WRITE_FLUSH_SUPPORTED undefined, because in this case libpng's
+ * default flush function, which uses the standard *FILE structure, will
+ * be used.
+ */
+extern PNG_EXPORT(void,png_set_write_fn) PNGARG((png_structp png_ptr,
+ png_voidp io_ptr, png_rw_ptr write_data_fn, png_flush_ptr output_flush_fn));
+
+/* Replace the default data input function with a user supplied one. */
+extern PNG_EXPORT(void,png_set_read_fn) PNGARG((png_structp png_ptr,
+ png_voidp io_ptr, png_rw_ptr read_data_fn));
+
+/* Return the user pointer associated with the I/O functions */
+extern PNG_EXPORT(png_voidp,png_get_io_ptr) PNGARG((png_structp png_ptr));
+
+extern PNG_EXPORT(void,png_set_read_status_fn) PNGARG((png_structp png_ptr,
+ png_read_status_ptr read_row_fn));
+
+extern PNG_EXPORT(void,png_set_write_status_fn) PNGARG((png_structp png_ptr,
+ png_write_status_ptr write_row_fn));
+
+#ifdef PNG_USER_MEM_SUPPORTED
+/* Replace the default memory allocation functions with user supplied one(s). */
+extern PNG_EXPORT(void,png_set_mem_fn) PNGARG((png_structp png_ptr,
+ png_voidp mem_ptr, png_malloc_ptr malloc_fn, png_free_ptr free_fn));
+/* Return the user pointer associated with the memory functions */
+extern PNG_EXPORT(png_voidp,png_get_mem_ptr) PNGARG((png_structp png_ptr));
+#endif
+
+#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
+extern PNG_EXPORT(void,png_set_read_user_transform_fn) PNGARG((png_structp
+ png_ptr, png_user_transform_ptr read_user_transform_fn));
+#endif
+
+#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
+extern PNG_EXPORT(void,png_set_write_user_transform_fn) PNGARG((png_structp
+ png_ptr, png_user_transform_ptr write_user_transform_fn));
+#endif
+
+#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
+ defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
+extern PNG_EXPORT(void,png_set_user_transform_info) PNGARG((png_structp
+ png_ptr, png_voidp user_transform_ptr, int user_transform_depth,
+ int user_transform_channels));
+/* Return the user pointer associated with the user transform functions */
+extern PNG_EXPORT(png_voidp,png_get_user_transform_ptr)
+ PNGARG((png_structp png_ptr));
+#endif
+
+#ifdef PNG_USER_CHUNKS_SUPPORTED
+extern PNG_EXPORT(void,png_set_read_user_chunk_fn) PNGARG((png_structp png_ptr,
+ png_voidp user_chunk_ptr, png_user_chunk_ptr read_user_chunk_fn));
+extern PNG_EXPORT(png_voidp,png_get_user_chunk_ptr) PNGARG((png_structp
+ png_ptr));
+#endif
+
+#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
+/* Sets the function callbacks for the push reader, and a pointer to a
+ * user-defined structure available to the callback functions.
+ */
+extern PNG_EXPORT(void,png_set_progressive_read_fn) PNGARG((png_structp png_ptr,
+ png_voidp progressive_ptr,
+ png_progressive_info_ptr info_fn, png_progressive_row_ptr row_fn,
+ png_progressive_end_ptr end_fn));
+
+/* Returns the user pointer associated with the push read functions */
+extern PNG_EXPORT(png_voidp,png_get_progressive_ptr)
+ PNGARG((png_structp png_ptr));
+
+/* Function to be called when data becomes available */
+extern PNG_EXPORT(void,png_process_data) PNGARG((png_structp png_ptr,
+ png_infop info_ptr, png_bytep buffer, png_size_t buffer_size));
+
+/* Function that combines rows. Not very much different than the
+ * png_combine_row() call. Is this even used?????
+ */
+extern PNG_EXPORT(void,png_progressive_combine_row) PNGARG((png_structp png_ptr,
+ png_bytep old_row, png_bytep new_row));
+#endif /* PNG_PROGRESSIVE_READ_SUPPORTED */
+
+extern PNG_EXPORT(png_voidp,png_malloc) PNGARG((png_structp png_ptr,
+ png_alloc_size_t size)) PNG_ALLOCATED;
+/* Added at libpng version 1.4.0 */
+extern PNG_EXPORT(png_voidp,png_calloc) PNGARG((png_structp png_ptr,
+ png_alloc_size_t size)) PNG_ALLOCATED;
+
+/* Added at libpng version 1.2.4 */
+extern PNG_EXPORT(png_voidp,png_malloc_warn) PNGARG((png_structp png_ptr,
+ png_alloc_size_t size)) PNG_ALLOCATED;
+
+/* Frees a pointer allocated by png_malloc() */
+extern PNG_EXPORT(void,png_free) PNGARG((png_structp png_ptr, png_voidp ptr));
+
+/* Free data that was allocated internally */
+extern PNG_EXPORT(void,png_free_data) PNGARG((png_structp png_ptr,
+ png_infop info_ptr, png_uint_32 free_me, int num));
+/* Reassign responsibility for freeing existing data, whether allocated
+ * by libpng or by the application */
+extern PNG_EXPORT(void,png_data_freer) PNGARG((png_structp png_ptr,
+ png_infop info_ptr, int freer, png_uint_32 mask));
+/* Assignments for png_data_freer */
+#define PNG_DESTROY_WILL_FREE_DATA 1
+#define PNG_SET_WILL_FREE_DATA 1
+#define PNG_USER_WILL_FREE_DATA 2
+/* Flags for png_ptr->free_me and info_ptr->free_me */
+#define PNG_FREE_HIST 0x0008
+#define PNG_FREE_ICCP 0x0010
+#define PNG_FREE_SPLT 0x0020
+#define PNG_FREE_ROWS 0x0040
+#define PNG_FREE_PCAL 0x0080
+#define PNG_FREE_SCAL 0x0100
+#define PNG_FREE_UNKN 0x0200
+#define PNG_FREE_LIST 0x0400
+#define PNG_FREE_PLTE 0x1000
+#define PNG_FREE_TRNS 0x2000
+#define PNG_FREE_TEXT 0x4000
+#define PNG_FREE_ALL 0x7fff
+#define PNG_FREE_MUL 0x4220 /* PNG_FREE_SPLT|PNG_FREE_TEXT|PNG_FREE_UNKN */
+
+#ifdef PNG_USER_MEM_SUPPORTED
+extern PNG_EXPORT(png_voidp,png_malloc_default) PNGARG((png_structp png_ptr,
+ png_alloc_size_t size)) PNG_ALLOCATED;
+extern PNG_EXPORT(void,png_free_default) PNGARG((png_structp png_ptr,
+ png_voidp ptr));
+#endif
+
+#ifndef PNG_NO_ERROR_TEXT
+/* Fatal error in PNG image of libpng - can't continue */
+extern PNG_EXPORT(void,png_error) PNGARG((png_structp png_ptr,
+ png_const_charp error_message)) PNG_NORETURN;
+
+/* The same, but the chunk name is prepended to the error string. */
+extern PNG_EXPORT(void,png_chunk_error) PNGARG((png_structp png_ptr,
+ png_const_charp error_message)) PNG_NORETURN;
+
+#else
+/* Fatal error in PNG image of libpng - can't continue */
+extern PNG_EXPORT(void,png_err) PNGARG((png_structp png_ptr)) PNG_NORETURN;
+#endif
+
+/* Non-fatal error in libpng. Can continue, but may have a problem. */
+extern PNG_EXPORT(void,png_warning) PNGARG((png_structp png_ptr,
+ png_const_charp warning_message));
+
+/* Non-fatal error in libpng, chunk name is prepended to message. */
+extern PNG_EXPORT(void,png_chunk_warning) PNGARG((png_structp png_ptr,
+ png_const_charp warning_message));
+
+#ifdef PNG_BENIGN_ERRORS_SUPPORTED
+/* Benign error in libpng. Can continue, but may have a problem.
+ * User can choose whether to handle as a fatal error or as a warning. */
+extern PNG_EXPORT(void,png_benign_error) PNGARG((png_structp png_ptr,
+ png_const_charp warning_message));
+
+/* Same, chunk name is prepended to message. */
+extern PNG_EXPORT(void,png_chunk_benign_error) PNGARG((png_structp png_ptr,
+ png_const_charp warning_message));
+
+extern PNG_EXPORT(void,png_set_benign_errors) PNGARG((png_structp
+ png_ptr, int allowed));
+#endif
+
+/* The png_set_<chunk> functions are for storing values in the png_info_struct.
+ * Similarly, the png_get_<chunk> calls are used to read values from the
+ * png_info_struct, either storing the parameters in the passed variables, or
+ * setting pointers into the png_info_struct where the data is stored. The
+ * png_get_<chunk> functions return a non-zero value if the data was available
+ * in info_ptr, or return zero and do not change any of the parameters if the
+ * data was not available.
+ *
+ * These functions should be used instead of directly accessing png_info
+ * to avoid problems with future changes in the size and internal layout of
+ * png_info_struct.
+ */
+/* Returns "flag" if chunk data is valid in info_ptr. */
+extern PNG_EXPORT(png_uint_32,png_get_valid) PNGARG((png_structp png_ptr,
+png_infop info_ptr, png_uint_32 flag));
+
+/* Returns number of bytes needed to hold a transformed row. */
+extern PNG_EXPORT(png_size_t,png_get_rowbytes) PNGARG((png_structp png_ptr,
+png_infop info_ptr));
+
+#ifdef PNG_INFO_IMAGE_SUPPORTED
+/* Returns row_pointers, which is an array of pointers to scanlines that was
+ * returned from png_read_png().
+ */
+extern PNG_EXPORT(png_bytepp,png_get_rows) PNGARG((png_structp png_ptr,
+png_infop info_ptr));
+/* Set row_pointers, which is an array of pointers to scanlines for use
+ * by png_write_png().
+ */
+extern PNG_EXPORT(void,png_set_rows) PNGARG((png_structp png_ptr,
+ png_infop info_ptr, png_bytepp row_pointers));
+#endif
+
+/* Returns number of color channels in image. */
+extern PNG_EXPORT(png_byte,png_get_channels) PNGARG((png_structp png_ptr,
+png_infop info_ptr));
+
+#ifdef PNG_EASY_ACCESS_SUPPORTED
+/* Returns image width in pixels. */
+extern PNG_EXPORT(png_uint_32, png_get_image_width) PNGARG((png_structp
+png_ptr, png_infop info_ptr));
+
+/* Returns image height in pixels. */
+extern PNG_EXPORT(png_uint_32, png_get_image_height) PNGARG((png_structp
+png_ptr, png_infop info_ptr));
+
+/* Returns image bit_depth. */
+extern PNG_EXPORT(png_byte, png_get_bit_depth) PNGARG((png_structp
+png_ptr, png_infop info_ptr));
+
+/* Returns image color_type. */
+extern PNG_EXPORT(png_byte, png_get_color_type) PNGARG((png_structp
+png_ptr, png_infop info_ptr));
+
+/* Returns image filter_type. */
+extern PNG_EXPORT(png_byte, png_get_filter_type) PNGARG((png_structp
+png_ptr, png_infop info_ptr));
+
+/* Returns image interlace_type. */
+extern PNG_EXPORT(png_byte, png_get_interlace_type) PNGARG((png_structp
+png_ptr, png_infop info_ptr));
+
+/* Returns image compression_type. */
+extern PNG_EXPORT(png_byte, png_get_compression_type) PNGARG((png_structp
+png_ptr, png_infop info_ptr));
+
+/* Returns image resolution in pixels per meter, from pHYs chunk data. */
+extern PNG_EXPORT(png_uint_32, png_get_pixels_per_meter) PNGARG((png_structp
+png_ptr, png_infop info_ptr));
+extern PNG_EXPORT(png_uint_32, png_get_x_pixels_per_meter) PNGARG((png_structp
+png_ptr, png_infop info_ptr));
+extern PNG_EXPORT(png_uint_32, png_get_y_pixels_per_meter) PNGARG((png_structp
+png_ptr, png_infop info_ptr));
+
+/* Returns pixel aspect ratio, computed from pHYs chunk data. */
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+extern PNG_EXPORT(float, png_get_pixel_aspect_ratio) PNGARG((png_structp
+png_ptr, png_infop info_ptr));
+#endif
+
+/* Returns image x, y offset in pixels or microns, from oFFs chunk data. */
+extern PNG_EXPORT(png_int_32, png_get_x_offset_pixels) PNGARG((png_structp
+png_ptr, png_infop info_ptr));
+extern PNG_EXPORT(png_int_32, png_get_y_offset_pixels) PNGARG((png_structp
+png_ptr, png_infop info_ptr));
+extern PNG_EXPORT(png_int_32, png_get_x_offset_microns) PNGARG((png_structp
+png_ptr, png_infop info_ptr));
+extern PNG_EXPORT(png_int_32, png_get_y_offset_microns) PNGARG((png_structp
+png_ptr, png_infop info_ptr));
+
+#endif /* PNG_EASY_ACCESS_SUPPORTED */
+
+/* Returns pointer to signature string read from PNG header */
+extern PNG_EXPORT(png_bytep,png_get_signature) PNGARG((png_structp png_ptr,
+png_infop info_ptr));
+
+#ifdef PNG_bKGD_SUPPORTED
+extern PNG_EXPORT(png_uint_32,png_get_bKGD) PNGARG((png_structp png_ptr,
+ png_infop info_ptr, png_color_16p *background));
+#endif
+
+#ifdef PNG_bKGD_SUPPORTED
+extern PNG_EXPORT(void,png_set_bKGD) PNGARG((png_structp png_ptr,
+ png_infop info_ptr, png_color_16p background));
+#endif
+
+#ifdef PNG_cHRM_SUPPORTED
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+extern PNG_EXPORT(png_uint_32,png_get_cHRM) PNGARG((png_structp png_ptr,
+ png_infop info_ptr, double *white_x, double *white_y, double *red_x,
+ double *red_y, double *green_x, double *green_y, double *blue_x,
+ double *blue_y));
+#endif
+#ifdef PNG_FIXED_POINT_SUPPORTED
+extern PNG_EXPORT(png_uint_32,png_get_cHRM_fixed) PNGARG((png_structp png_ptr,
+ png_infop info_ptr, png_fixed_point *int_white_x, png_fixed_point
+ *int_white_y, png_fixed_point *int_red_x, png_fixed_point *int_red_y,
+ png_fixed_point *int_green_x, png_fixed_point *int_green_y, png_fixed_point
+ *int_blue_x, png_fixed_point *int_blue_y));
+#endif
+#endif
+
+#ifdef PNG_cHRM_SUPPORTED
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+extern PNG_EXPORT(void,png_set_cHRM) PNGARG((png_structp png_ptr,
+ png_infop info_ptr, double white_x, double white_y, double red_x,
+ double red_y, double green_x, double green_y, double blue_x, double blue_y));
+#endif
+#ifdef PNG_FIXED_POINT_SUPPORTED
+extern PNG_EXPORT(void,png_set_cHRM_fixed) PNGARG((png_structp png_ptr,
+ png_infop info_ptr, png_fixed_point int_white_x, png_fixed_point int_white_y,
+ png_fixed_point int_red_x, png_fixed_point int_red_y, png_fixed_point
+ int_green_x, png_fixed_point int_green_y, png_fixed_point int_blue_x,
+ png_fixed_point int_blue_y));
+#endif
+#endif
+
+#ifdef PNG_gAMA_SUPPORTED
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+extern PNG_EXPORT(png_uint_32,png_get_gAMA) PNGARG((png_structp png_ptr,
+ png_infop info_ptr, double *file_gamma));
+#endif
+extern PNG_EXPORT(png_uint_32,png_get_gAMA_fixed) PNGARG((png_structp png_ptr,
+ png_infop info_ptr, png_fixed_point *int_file_gamma));
+#endif
+
+#ifdef PNG_gAMA_SUPPORTED
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+extern PNG_EXPORT(void,png_set_gAMA) PNGARG((png_structp png_ptr,
+ png_infop info_ptr, double file_gamma));
+#endif
+extern PNG_EXPORT(void,png_set_gAMA_fixed) PNGARG((png_structp png_ptr,
+ png_infop info_ptr, png_fixed_point int_file_gamma));
+#endif
+
+#ifdef PNG_hIST_SUPPORTED
+extern PNG_EXPORT(png_uint_32,png_get_hIST) PNGARG((png_structp png_ptr,
+ png_infop info_ptr, png_uint_16p *hist));
+#endif
+
+#ifdef PNG_hIST_SUPPORTED
+extern PNG_EXPORT(void,png_set_hIST) PNGARG((png_structp png_ptr,
+ png_infop info_ptr, png_uint_16p hist));
+#endif
+
+extern PNG_EXPORT(png_uint_32,png_get_IHDR) PNGARG((png_structp png_ptr,
+ png_infop info_ptr, png_uint_32 *width, png_uint_32 *height,
+ int *bit_depth, int *color_type, int *interlace_method,
+ int *compression_method, int *filter_method));
+
+extern PNG_EXPORT(void,png_set_IHDR) PNGARG((png_structp png_ptr,
+ png_infop info_ptr, png_uint_32 width, png_uint_32 height, int bit_depth,
+ int color_type, int interlace_method, int compression_method,
+ int filter_method));
+
+#ifdef PNG_oFFs_SUPPORTED
+extern PNG_EXPORT(png_uint_32,png_get_oFFs) PNGARG((png_structp png_ptr,
+ png_infop info_ptr, png_int_32 *offset_x, png_int_32 *offset_y,
+ int *unit_type));
+#endif
+
+#ifdef PNG_oFFs_SUPPORTED
+extern PNG_EXPORT(void,png_set_oFFs) PNGARG((png_structp png_ptr,
+ png_infop info_ptr, png_int_32 offset_x, png_int_32 offset_y,
+ int unit_type));
+#endif
+
+#ifdef PNG_pCAL_SUPPORTED
+extern PNG_EXPORT(png_uint_32,png_get_pCAL) PNGARG((png_structp png_ptr,
+ png_infop info_ptr, png_charp *purpose, png_int_32 *X0, png_int_32 *X1,
+ int *type, int *nparams, png_charp *units, png_charpp *params));
+#endif
+
+#ifdef PNG_pCAL_SUPPORTED
+extern PNG_EXPORT(void,png_set_pCAL) PNGARG((png_structp png_ptr,
+ png_infop info_ptr, png_charp purpose, png_int_32 X0, png_int_32 X1,
+ int type, int nparams, png_charp units, png_charpp params));
+#endif
+
+#ifdef PNG_pHYs_SUPPORTED
+extern PNG_EXPORT(png_uint_32,png_get_pHYs) PNGARG((png_structp png_ptr,
+ png_infop info_ptr, png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type));
+#endif
+
+#ifdef PNG_pHYs_SUPPORTED
+extern PNG_EXPORT(void,png_set_pHYs) PNGARG((png_structp png_ptr,
+ png_infop info_ptr, png_uint_32 res_x, png_uint_32 res_y, int unit_type));
+#endif
+
+extern PNG_EXPORT(png_uint_32,png_get_PLTE) PNGARG((png_structp png_ptr,
+ png_infop info_ptr, png_colorp *palette, int *num_palette));
+
+extern PNG_EXPORT(void,png_set_PLTE) PNGARG((png_structp png_ptr,
+ png_infop info_ptr, png_colorp palette, int num_palette));
+
+#ifdef PNG_sBIT_SUPPORTED
+extern PNG_EXPORT(png_uint_32,png_get_sBIT) PNGARG((png_structp png_ptr,
+ png_infop info_ptr, png_color_8p *sig_bit));
+#endif
+
+#ifdef PNG_sBIT_SUPPORTED
+extern PNG_EXPORT(void,png_set_sBIT) PNGARG((png_structp png_ptr,
+ png_infop info_ptr, png_color_8p sig_bit));
+#endif
+
+#ifdef PNG_sRGB_SUPPORTED
+extern PNG_EXPORT(png_uint_32,png_get_sRGB) PNGARG((png_structp png_ptr,
+ png_infop info_ptr, int *intent));
+#endif
+
+#ifdef PNG_sRGB_SUPPORTED
+extern PNG_EXPORT(void,png_set_sRGB) PNGARG((png_structp png_ptr,
+ png_infop info_ptr, int intent));
+extern PNG_EXPORT(void,png_set_sRGB_gAMA_and_cHRM) PNGARG((png_structp png_ptr,
+ png_infop info_ptr, int intent));
+#endif
+
+#ifdef PNG_iCCP_SUPPORTED
+extern PNG_EXPORT(png_uint_32,png_get_iCCP) PNGARG((png_structp png_ptr,
+ png_infop info_ptr, png_charpp name, int *compression_type,
+ png_charpp profile, png_uint_32 *proflen));
+ /* Note to maintainer: profile should be png_bytepp */
+#endif
+
+#ifdef PNG_iCCP_SUPPORTED
+extern PNG_EXPORT(void,png_set_iCCP) PNGARG((png_structp png_ptr,
+ png_infop info_ptr, png_charp name, int compression_type,
+ png_charp profile, png_uint_32 proflen));
+ /* Note to maintainer: profile should be png_bytep */
+#endif
+
+#ifdef PNG_sPLT_SUPPORTED
+extern PNG_EXPORT(png_uint_32,png_get_sPLT) PNGARG((png_structp png_ptr,
+ png_infop info_ptr, png_sPLT_tpp entries));
+#endif
+
+#ifdef PNG_sPLT_SUPPORTED
+extern PNG_EXPORT(void,png_set_sPLT) PNGARG((png_structp png_ptr,
+ png_infop info_ptr, png_sPLT_tp entries, int nentries));
+#endif
+
+#ifdef PNG_TEXT_SUPPORTED
+/* png_get_text also returns the number of text chunks in *num_text */
+extern PNG_EXPORT(png_uint_32,png_get_text) PNGARG((png_structp png_ptr,
+ png_infop info_ptr, png_textp *text_ptr, int *num_text));
+#endif
+
+/* Note while png_set_text() will accept a structure whose text,
+ * language, and translated keywords are NULL pointers, the structure
+ * returned by png_get_text will always contain regular
+ * zero-terminated C strings. They might be empty strings but
+ * they will never be NULL pointers.
+ */
+
+#ifdef PNG_TEXT_SUPPORTED
+extern PNG_EXPORT(void,png_set_text) PNGARG((png_structp png_ptr,
+ png_infop info_ptr, png_textp text_ptr, int num_text));
+#endif
+
+#ifdef PNG_tIME_SUPPORTED
+extern PNG_EXPORT(png_uint_32,png_get_tIME) PNGARG((png_structp png_ptr,
+ png_infop info_ptr, png_timep *mod_time));
+#endif
+
+#ifdef PNG_tIME_SUPPORTED
+extern PNG_EXPORT(void,png_set_tIME) PNGARG((png_structp png_ptr,
+ png_infop info_ptr, png_timep mod_time));
+#endif
+
+#ifdef PNG_tRNS_SUPPORTED
+extern PNG_EXPORT(png_uint_32,png_get_tRNS) PNGARG((png_structp png_ptr,
+ png_infop info_ptr, png_bytep *trans_alpha, int *num_trans,
+ png_color_16p *trans_color));
+#endif
+
+#ifdef PNG_tRNS_SUPPORTED
+extern PNG_EXPORT(void,png_set_tRNS) PNGARG((png_structp png_ptr,
+ png_infop info_ptr, png_bytep trans_alpha, int num_trans,
+ png_color_16p trans_color));
+#endif
+
+#ifdef PNG_tRNS_SUPPORTED
+#endif
+
+#ifdef PNG_sCAL_SUPPORTED
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+extern PNG_EXPORT(png_uint_32,png_get_sCAL) PNGARG((png_structp png_ptr,
+ png_infop info_ptr, int *unit, double *width, double *height));
+#else
+#ifdef PNG_FIXED_POINT_SUPPORTED
+extern PNG_EXPORT(png_uint_32,png_get_sCAL_s) PNGARG((png_structp png_ptr,
+ png_infop info_ptr, int *unit, png_charpp swidth, png_charpp sheight));
+#endif
+#endif
+#endif /* PNG_sCAL_SUPPORTED */
+
+#ifdef PNG_sCAL_SUPPORTED
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+extern PNG_EXPORT(void,png_set_sCAL) PNGARG((png_structp png_ptr,
+ png_infop info_ptr, int unit, double width, double height));
+#else
+#ifdef PNG_FIXED_POINT_SUPPORTED
+extern PNG_EXPORT(void,png_set_sCAL_s) PNGARG((png_structp png_ptr,
+ png_infop info_ptr, int unit, png_charp swidth, png_charp sheight));
+#endif
+#endif
+#endif /* PNG_sCAL_SUPPORTED || PNG_WRITE_sCAL_SUPPORTED */
+
+#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
+/* Provide a list of chunks and how they are to be handled, if the built-in
+ handling or default unknown chunk handling is not desired. Any chunks not
+ listed will be handled in the default manner. The IHDR and IEND chunks
+ must not be listed.
+ keep = 0: follow default behaviour
+ = 1: do not keep
+ = 2: keep only if safe-to-copy
+ = 3: keep even if unsafe-to-copy
+*/
+extern PNG_EXPORT(void, png_set_keep_unknown_chunks) PNGARG((png_structp
+ png_ptr, int keep, png_bytep chunk_list, int num_chunks));
+PNG_EXPORT(int,png_handle_as_unknown) PNGARG((png_structp png_ptr, png_bytep
+ chunk_name));
+#endif
+#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
+extern PNG_EXPORT(void, png_set_unknown_chunks) PNGARG((png_structp png_ptr,
+ png_infop info_ptr, png_unknown_chunkp unknowns, int num_unknowns));
+extern PNG_EXPORT(void, png_set_unknown_chunk_location)
+ PNGARG((png_structp png_ptr, png_infop info_ptr, int chunk, int location));
+extern PNG_EXPORT(png_uint_32,png_get_unknown_chunks) PNGARG((png_structp
+ png_ptr, png_infop info_ptr, png_unknown_chunkpp entries));
+#endif
+
+/* Png_free_data() will turn off the "valid" flag for anything it frees.
+ * If you need to turn it off for a chunk that your application has freed,
+ * you can use png_set_invalid(png_ptr, info_ptr, PNG_INFO_CHNK);
+ */
+extern PNG_EXPORT(void, png_set_invalid) PNGARG((png_structp png_ptr,
+ png_infop info_ptr, int mask));
+
+#ifdef PNG_INFO_IMAGE_SUPPORTED
+/* The "params" pointer is currently not used and is for future expansion. */
+extern PNG_EXPORT(void, png_read_png) PNGARG((png_structp png_ptr,
+ png_infop info_ptr,
+ int transforms,
+ png_voidp params));
+extern PNG_EXPORT(void, png_write_png) PNGARG((png_structp png_ptr,
+ png_infop info_ptr,
+ int transforms,
+ png_voidp params));
+#endif
+
+extern PNG_EXPORT(png_charp,png_get_copyright) PNGARG((png_structp png_ptr));
+extern PNG_EXPORT(png_charp,png_get_header_ver) PNGARG((png_structp png_ptr));
+extern PNG_EXPORT(png_charp,png_get_header_version) PNGARG((png_structp png_ptr));
+extern PNG_EXPORT(png_charp,png_get_libpng_ver) PNGARG((png_structp png_ptr));
+
+#ifdef PNG_MNG_FEATURES_SUPPORTED
+extern PNG_EXPORT(png_uint_32,png_permit_mng_features) PNGARG((png_structp
+ png_ptr, png_uint_32 mng_features_permitted));
+#endif
+
+/* For use in png_set_keep_unknown, added to version 1.2.6 */
+#define PNG_HANDLE_CHUNK_AS_DEFAULT 0
+#define PNG_HANDLE_CHUNK_NEVER 1
+#define PNG_HANDLE_CHUNK_IF_SAFE 2
+#define PNG_HANDLE_CHUNK_ALWAYS 3
+
+/* Strip the prepended error numbers ("#nnn ") from error and warning
+ * messages before passing them to the error or warning handler.
+ */
+#ifdef PNG_ERROR_NUMBERS_SUPPORTED
+extern PNG_EXPORT(void,png_set_strip_error_numbers) PNGARG((png_structp
+ png_ptr, png_uint_32 strip_mode));
+#endif
+
+/* Added in libpng-1.2.6 */
+#ifdef PNG_SET_USER_LIMITS_SUPPORTED
+extern PNG_EXPORT(void,png_set_user_limits) PNGARG((png_structp
+ png_ptr, png_uint_32 user_width_max, png_uint_32 user_height_max));
+extern PNG_EXPORT(png_uint_32,png_get_user_width_max) PNGARG((png_structp
+ png_ptr));
+extern PNG_EXPORT(png_uint_32,png_get_user_height_max) PNGARG((png_structp
+ png_ptr));
+/* Added in libpng-1.4.0 */
+extern PNG_EXPORT(void,png_set_chunk_cache_max) PNGARG((png_structp
+ png_ptr, png_uint_32 user_chunk_cache_max));
+extern PNG_EXPORT(png_uint_32,png_get_chunk_cache_max)
+ PNGARG((png_structp png_ptr));
+#endif
+
+#if defined(PNG_INCH_CONVERSIONS) && defined(PNG_FLOATING_POINT_SUPPORTED)
+PNG_EXPORT(png_uint_32,png_get_pixels_per_inch) PNGARG((png_structp png_ptr,
+png_infop info_ptr));
+
+PNG_EXPORT(png_uint_32,png_get_x_pixels_per_inch) PNGARG((png_structp png_ptr,
+png_infop info_ptr));
+
+PNG_EXPORT(png_uint_32,png_get_y_pixels_per_inch) PNGARG((png_structp png_ptr,
+png_infop info_ptr));
+
+PNG_EXPORT(float,png_get_x_offset_inches) PNGARG((png_structp png_ptr,
+png_infop info_ptr));
+
+PNG_EXPORT(float,png_get_y_offset_inches) PNGARG((png_structp png_ptr,
+png_infop info_ptr));
+
+#ifdef PNG_pHYs_SUPPORTED
+PNG_EXPORT(png_uint_32,png_get_pHYs_dpi) PNGARG((png_structp png_ptr,
+png_infop info_ptr, png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type));
+#endif /* PNG_pHYs_SUPPORTED */
+#endif /* PNG_INCH_CONVERSIONS && PNG_FLOATING_POINT_SUPPORTED */
+
+/* Added in libpng-1.4.0 */
+#ifdef PNG_IO_STATE_SUPPORTED
+extern PNG_EXPORT(png_uint_32,png_get_io_state) PNGARG((png_structp png_ptr));
+
+extern PNG_EXPORT(png_bytep,png_get_io_chunk_name)
+ PNGARG((png_structp png_ptr));
+
+/* The flags returned by png_get_io_state() are the following: */
+#define PNG_IO_NONE 0x0000 /* no I/O at this moment */
+#define PNG_IO_READING 0x0001 /* currently reading */
+#define PNG_IO_WRITING 0x0002 /* currently writing */
+#define PNG_IO_SIGNATURE 0x0010 /* currently at the file signature */
+#define PNG_IO_CHUNK_HDR 0x0020 /* currently at the chunk header */
+#define PNG_IO_CHUNK_DATA 0x0040 /* currently at the chunk data */
+#define PNG_IO_CHUNK_CRC 0x0080 /* currently at the chunk crc */
+#define PNG_IO_MASK_OP 0x000f /* current operation: reading/writing */
+#define PNG_IO_MASK_LOC 0x00f0 /* current location: sig/hdr/data/crc */
+#endif /* ?PNG_IO_STATE_SUPPORTED */
+
+/* Maintainer: Put new public prototypes here ^, in libpng.3, and project
+ * defs
+ */
+
+#ifdef PNG_READ_COMPOSITE_NODIV_SUPPORTED
+/* With these routines we avoid an integer divide, which will be slower on
+ * most machines. However, it does take more operations than the corresponding
+ * divide method, so it may be slower on a few RISC systems. There are two
+ * shifts (by 8 or 16 bits) and an addition, versus a single integer divide.
+ *
+ * Note that the rounding factors are NOT supposed to be the same! 128 and
+ * 32768 are correct for the NODIV code; 127 and 32767 are correct for the
+ * standard method.
+ *
+ * [Optimized code by Greg Roelofs and Mark Adler...blame us for bugs. :-) ]
+ */
+
+ /* fg and bg should be in `gamma 1.0' space; alpha is the opacity */
+
+# define png_composite(composite, fg, alpha, bg) \
+ { png_uint_16 temp = (png_uint_16)((png_uint_16)(fg) * (png_uint_16)(alpha) \
+ + (png_uint_16)(bg)*(png_uint_16)(255 - \
+ (png_uint_16)(alpha)) + (png_uint_16)128); \
+ (composite) = (png_byte)((temp + (temp >> 8)) >> 8); }
+
+# define png_composite_16(composite, fg, alpha, bg) \
+ { png_uint_32 temp = (png_uint_32)((png_uint_32)(fg) * (png_uint_32)(alpha) \
+ + (png_uint_32)(bg)*(png_uint_32)(65535L - \
+ (png_uint_32)(alpha)) + (png_uint_32)32768L); \
+ (composite) = (png_uint_16)((temp + (temp >> 16)) >> 16); }
+
+#else /* Standard method using integer division */
+
+# define png_composite(composite, fg, alpha, bg) \
+ (composite) = (png_byte)(((png_uint_16)(fg) * (png_uint_16)(alpha) + \
+ (png_uint_16)(bg) * (png_uint_16)(255 - (png_uint_16)(alpha)) + \
+ (png_uint_16)127) / 255)
+
+# define png_composite_16(composite, fg, alpha, bg) \
+ (composite) = (png_uint_16)(((png_uint_32)(fg) * (png_uint_32)(alpha) + \
+ (png_uint_32)(bg)*(png_uint_32)(65535L - (png_uint_32)(alpha)) + \
+ (png_uint_32)32767) / (png_uint_32)65535L)
+#endif /* PNG_READ_COMPOSITE_NODIV_SUPPORTED */
+
+#ifdef PNG_USE_READ_MACROS
+/* Inline macros to do direct reads of bytes from the input buffer.
+ * The png_get_int_32() routine assumes we are using two's complement
+ * format for negative values, which is almost certainly true.
+ */
+/* We could make special-case BIG_ENDIAN macros that do direct reads here */
+# define png_get_uint_32(buf) \
+ (((png_uint_32)(*(buf)) << 24) + \
+ ((png_uint_32)(*((buf) + 1)) << 16) + \
+ ((png_uint_32)(*((buf) + 2)) << 8) + \
+ ((png_uint_32)(*((buf) + 3))))
+# define png_get_uint_16(buf) \
+ (((png_uint_32)(*(buf)) << 8) + \
+ ((png_uint_32)(*((buf) + 1))))
+#ifdef PNG_GET_INT_32_SUPPORTED
+# define png_get_int_32(buf) \
+ (((png_int_32)(*(buf)) << 24) + \
+ ((png_int_32)(*((buf) + 1)) << 16) + \
+ ((png_int_32)(*((buf) + 2)) << 8) + \
+ ((png_int_32)(*((buf) + 3))))
+#endif
+#else
+extern PNG_EXPORT(png_uint_32,png_get_uint_32) PNGARG((png_bytep buf));
+extern PNG_EXPORT(png_uint_16,png_get_uint_16) PNGARG((png_bytep buf));
+#ifdef PNG_GET_INT_32_SUPPORTED
+extern PNG_EXPORT(png_int_32,png_get_int_32) PNGARG((png_bytep buf));
+#endif
+#endif
+extern PNG_EXPORT(png_uint_32,png_get_uint_31)
+ PNGARG((png_structp png_ptr, png_bytep buf));
+/* No png_get_int_16 -- may be added if there's a real need for it. */
+
+/* Place a 32-bit number into a buffer in PNG byte order (big-endian). */
+extern PNG_EXPORT(void,png_save_uint_32)
+ PNGARG((png_bytep buf, png_uint_32 i));
+extern PNG_EXPORT(void,png_save_int_32)
+ PNGARG((png_bytep buf, png_int_32 i));
+
+/* Place a 16-bit number into a buffer in PNG byte order.
+ * The parameter is declared unsigned int, not png_uint_16,
+ * just to avoid potential problems on pre-ANSI C compilers.
+ */
+extern PNG_EXPORT(void,png_save_uint_16)
+ PNGARG((png_bytep buf, unsigned int i));
+/* No png_save_int_16 -- may be added if there's a real need for it. */
+
+/* ************************************************************************* */
+
+/* Various modes of operation. Note that after an init, mode is set to
+ * zero automatically when the structure is created.
+ */
+#define PNG_HAVE_IHDR 0x01
+#define PNG_HAVE_PLTE 0x02
+#define PNG_HAVE_IDAT 0x04
+#define PNG_AFTER_IDAT 0x08 /* Have complete zlib datastream */
+#define PNG_HAVE_IEND 0x10
+#define PNG_HAVE_gAMA 0x20
+#define PNG_HAVE_cHRM 0x40
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* PNG_VERSION_INFO_ONLY */
+/* Do not put anything past this line */
+#endif /* PNG_H */
diff --git a/src/3rdparty/libpng/pngbar.jpg b/src/3rdparty/libpng/pngbar.jpg
new file mode 100644
index 0000000..70ba8d8
--- /dev/null
+++ b/src/3rdparty/libpng/pngbar.jpg
Binary files differ
diff --git a/src/3rdparty/libpng/pngbar.png b/src/3rdparty/libpng/pngbar.png
new file mode 100644
index 0000000..49798c8
--- /dev/null
+++ b/src/3rdparty/libpng/pngbar.png
Binary files differ
diff --git a/src/3rdparty/libpng/pngconf.h b/src/3rdparty/libpng/pngconf.h
new file mode 100644
index 0000000..3570fbe
--- /dev/null
+++ b/src/3rdparty/libpng/pngconf.h
@@ -0,0 +1,1482 @@
+
+/* pngconf.h - machine configurable file for libpng
+ *
+ * libpng version 1.4.0 - January 3, 2010
+ * For conditions of distribution and use, see copyright notice in png.h
+ * Copyright (c) 1998-2010 Glenn Randers-Pehrson
+ * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
+ * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ *
+ */
+
+/* Any machine specific code is near the front of this file, so if you
+ * are configuring libpng for a machine, you may want to read the section
+ * starting here down to where it starts to typedef png_color, png_text,
+ * and png_info.
+ */
+
+#ifndef PNGCONF_H
+#define PNGCONF_H
+
+#ifndef PNG_NO_LIMITS_H
+# include <limits.h>
+#endif
+
+/* Added at libpng-1.2.9 */
+
+/* config.h is created by and PNG_CONFIGURE_LIBPNG is set by the "configure" script. */
+#ifdef PNG_CONFIGURE_LIBPNG
+# ifdef HAVE_CONFIG_H
+# include "config.h"
+# endif
+#endif
+
+/*
+ * Added at libpng-1.2.8
+ *
+ * PNG_USER_CONFIG has to be defined on the compiler command line. This
+ * includes the resource compiler for Windows DLL configurations.
+ */
+#ifdef PNG_USER_CONFIG
+# ifndef PNG_USER_PRIVATEBUILD
+# define PNG_USER_PRIVATEBUILD
+# endif
+# include "pngusr.h"
+#endif
+
+/*
+ * If you create a private DLL you need to define in "pngusr.h" the followings:
+ * #define PNG_USER_PRIVATEBUILD <Describes by whom and why this version of
+ * the DLL was built>
+ * e.g. #define PNG_USER_PRIVATEBUILD "Build by MyCompany for xyz reasons."
+ * #define PNG_USER_DLLFNAME_POSTFIX <two-letter postfix that serve to
+ * distinguish your DLL from those of the official release. These
+ * correspond to the trailing letters that come after the version
+ * number and must match your private DLL name>
+ * e.g. // private DLL "libpng13gx.dll"
+ * #define PNG_USER_DLLFNAME_POSTFIX "gx"
+ *
+ * The following macros are also at your disposal if you want to complete the
+ * DLL VERSIONINFO structure.
+ * - PNG_USER_VERSIONINFO_COMMENTS
+ * - PNG_USER_VERSIONINFO_COMPANYNAME
+ * - PNG_USER_VERSIONINFO_LEGALTRADEMARKS
+ */
+
+#ifdef __STDC__
+# ifdef SPECIALBUILD
+# pragma message("PNG_LIBPNG_SPECIALBUILD (and deprecated SPECIALBUILD)\
+ are now LIBPNG reserved macros. Use PNG_USER_PRIVATEBUILD instead.")
+# endif
+
+# ifdef PRIVATEBUILD
+# pragma message("PRIVATEBUILD is deprecated.\
+ Use PNG_USER_PRIVATEBUILD instead.")
+# define PNG_USER_PRIVATEBUILD PRIVATEBUILD
+# endif
+#endif /* __STDC__ */
+
+/* End of material added to libpng-1.2.8 */
+
+#ifndef PNG_VERSION_INFO_ONLY
+
+/* This is the size of the compression buffer, and thus the size of
+ * an IDAT chunk. Make this whatever size you feel is best for your
+ * machine. One of these will be allocated per png_struct. When this
+ * is full, it writes the data to the disk, and does some other
+ * calculations. Making this an extremely small size will slow
+ * the library down, but you may want to experiment to determine
+ * where it becomes significant, if you are concerned with memory
+ * usage. Note that zlib allocates at least 32Kb also. For readers,
+ * this describes the size of the buffer available to read the data in.
+ * Unless this gets smaller than the size of a row (compressed),
+ * it should not make much difference how big this is.
+ */
+
+#ifndef PNG_ZBUF_SIZE
+# define PNG_ZBUF_SIZE 8192
+#endif
+
+/* Enable if you want a write-only libpng */
+
+#ifndef PNG_NO_READ_SUPPORTED
+# define PNG_READ_SUPPORTED
+#endif
+
+/* Enable if you want a read-only libpng */
+
+#ifndef PNG_NO_WRITE_SUPPORTED
+# define PNG_WRITE_SUPPORTED
+#endif
+
+/* Enabled in 1.4.0. */
+#ifdef PNG_ALLOW_BENIGN_ERRORS
+# define png_benign_error png_warning
+# define png_chunk_benign_error png_chunk_warning
+#else
+# ifndef PNG_BENIGN_ERRORS_SUPPORTED
+# define png_benign_error png_error
+# define png_chunk_benign_error png_chunk_error
+# endif
+#endif
+
+/* Added at libpng version 1.4.0 */
+#if !defined(PNG_NO_WARNINGS) && !defined(PNG_WARNINGS_SUPPORTED)
+# define PNG_WARNINGS_SUPPORTED
+#endif
+
+/* Added at libpng version 1.4.0 */
+#if !defined(PNG_NO_ERROR_TEXT) && !defined(PNG_ERROR_TEXT_SUPPORTED)
+# define PNG_ERROR_TEXT_SUPPORTED
+#endif
+
+/* Added at libpng version 1.4.0 */
+#if !defined(PNG_NO_CHECK_cHRM) && !defined(PNG_CHECK_cHRM_SUPPORTED)
+# define PNG_CHECK_cHRM_SUPPORTED
+#endif
+
+/* Added at libpng version 1.4.0 */
+#if !defined(PNG_NO_ALIGNED_MEMORY) && !defined(PNG_ALIGNED_MEMORY_SUPPORTED)
+# define PNG_ALIGNED_MEMORY_SUPPORTED
+#endif
+
+/* Enabled by default in 1.2.0. You can disable this if you don't need to
+ support PNGs that are embedded in MNG datastreams */
+#ifndef PNG_NO_MNG_FEATURES
+# ifndef PNG_MNG_FEATURES_SUPPORTED
+# define PNG_MNG_FEATURES_SUPPORTED
+# endif
+#endif
+
+/* Added at libpng version 1.4.0 */
+#ifndef PNG_NO_FLOATING_POINT_SUPPORTED
+# ifndef PNG_FLOATING_POINT_SUPPORTED
+# define PNG_FLOATING_POINT_SUPPORTED
+# endif
+#endif
+
+/* Added at libpng-1.4.0beta49 for testing (this test is no longer used
+ in libpng and png_calloc() is always present)
+ */
+#define PNG_CALLOC_SUPPORTED
+
+/* If you are running on a machine where you cannot allocate more
+ * than 64K of memory at once, uncomment this. While libpng will not
+ * normally need that much memory in a chunk (unless you load up a very
+ * large file), zlib needs to know how big of a chunk it can use, and
+ * libpng thus makes sure to check any memory allocation to verify it
+ * will fit into memory.
+#define PNG_MAX_MALLOC_64K
+ */
+#if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K)
+# define PNG_MAX_MALLOC_64K
+#endif
+
+/* Special munging to support doing things the 'cygwin' way:
+ * 'Normal' png-on-win32 defines/defaults:
+ * PNG_BUILD_DLL -- building dll
+ * PNG_USE_DLL -- building an application, linking to dll
+ * (no define) -- building static library, or building an
+ * application and linking to the static lib
+ * 'Cygwin' defines/defaults:
+ * PNG_BUILD_DLL -- (ignored) building the dll
+ * (no define) -- (ignored) building an application, linking to the dll
+ * PNG_STATIC -- (ignored) building the static lib, or building an
+ * application that links to the static lib.
+ * ALL_STATIC -- (ignored) building various static libs, or building an
+ * application that links to the static libs.
+ * Thus,
+ * a cygwin user should define either PNG_BUILD_DLL or PNG_STATIC, and
+ * this bit of #ifdefs will define the 'correct' config variables based on
+ * that. If a cygwin user *wants* to define 'PNG_USE_DLL' that's okay, but
+ * unnecessary.
+ *
+ * Also, the precedence order is:
+ * ALL_STATIC (since we can't #undef something outside our namespace)
+ * PNG_BUILD_DLL
+ * PNG_STATIC
+ * (nothing) == PNG_USE_DLL
+ *
+ * CYGWIN (2002-01-20): The preceding is now obsolete. With the advent
+ * of auto-import in binutils, we no longer need to worry about
+ * __declspec(dllexport) / __declspec(dllimport) and friends. Therefore,
+ * we don't need to worry about PNG_STATIC or ALL_STATIC when it comes
+ * to __declspec() stuff. However, we DO need to worry about
+ * PNG_BUILD_DLL and PNG_STATIC because those change some defaults
+ * such as CONSOLE_IO.
+ */
+#ifdef __CYGWIN__
+# ifdef ALL_STATIC
+# ifdef PNG_BUILD_DLL
+# undef PNG_BUILD_DLL
+# endif
+# ifdef PNG_USE_DLL
+# undef PNG_USE_DLL
+# endif
+# ifdef PNG_DLL
+# undef PNG_DLL
+# endif
+# ifndef PNG_STATIC
+# define PNG_STATIC
+# endif
+# else
+# ifdef PNG_BUILD_DLL
+# ifdef PNG_STATIC
+# undef PNG_STATIC
+# endif
+# ifdef PNG_USE_DLL
+# undef PNG_USE_DLL
+# endif
+# ifndef PNG_DLL
+# define PNG_DLL
+# endif
+# else
+# ifdef PNG_STATIC
+# ifdef PNG_USE_DLL
+# undef PNG_USE_DLL
+# endif
+# ifdef PNG_DLL
+# undef PNG_DLL
+# endif
+# else
+# ifndef PNG_USE_DLL
+# define PNG_USE_DLL
+# endif
+# ifndef PNG_DLL
+# define PNG_DLL
+# endif
+# endif
+# endif
+# endif
+#endif
+
+/* This protects us against compilers that run on a windowing system
+ * and thus don't have or would rather us not use the stdio types:
+ * stdin, stdout, and stderr. The only one currently used is stderr
+ * in png_error() and png_warning(). #defining PNG_NO_CONSOLE_IO will
+ * prevent these from being compiled and used. #defining PNG_NO_STDIO
+ * will also prevent these, plus will prevent the entire set of stdio
+ * macros and functions (FILE *, printf, etc.) from being compiled and used,
+ * unless (PNG_DEBUG > 0) has been #defined.
+ *
+ * #define PNG_NO_CONSOLE_IO
+ * #define PNG_NO_STDIO
+ */
+
+#if !defined(PNG_NO_STDIO) && !defined(PNG_STDIO_SUPPORTED)
+# define PNG_STDIO_SUPPORTED
+#endif
+
+
+#ifdef PNG_BUILD_DLL
+# if !defined(PNG_CONSOLE_IO_SUPPORTED) && !defined(PNG_NO_CONSOLE_IO)
+# define PNG_NO_CONSOLE_IO
+# endif
+#endif
+
+# ifdef PNG_NO_STDIO
+# ifndef PNG_NO_CONSOLE_IO
+# define PNG_NO_CONSOLE_IO
+# endif
+# ifdef PNG_DEBUG
+# if (PNG_DEBUG > 0)
+# include <stdio.h>
+# endif
+# endif
+# else
+# include <stdio.h>
+# endif
+
+#if !(defined PNG_NO_CONSOLE_IO) && !defined(PNG_CONSOLE_IO_SUPPORTED)
+# define PNG_CONSOLE_IO_SUPPORTED
+#endif
+
+/* This macro protects us against machines that don't have function
+ * prototypes (ie K&R style headers). If your compiler does not handle
+ * function prototypes, define this macro and use the included ansi2knr.
+ * I've always been able to use _NO_PROTO as the indicator, but you may
+ * need to drag the empty declaration out in front of here, or change the
+ * ifdef to suit your own needs.
+ */
+#ifndef PNGARG
+
+#ifdef OF /* zlib prototype munger */
+# define PNGARG(arglist) OF(arglist)
+#else
+
+#ifdef _NO_PROTO
+# define PNGARG(arglist) ()
+#else
+# define PNGARG(arglist) arglist
+#endif /* _NO_PROTO */
+
+#endif /* OF */
+
+#endif /* PNGARG */
+
+/* Try to determine if we are compiling on a Mac. Note that testing for
+ * just __MWERKS__ is not good enough, because the Codewarrior is now used
+ * on non-Mac platforms.
+ */
+#ifndef MACOS
+# if (defined(__MWERKS__) && defined(macintosh)) || defined(applec) || \
+ defined(THINK_C) || defined(__SC__) || defined(TARGET_OS_MAC)
+# define MACOS
+# endif
+#endif
+
+/* Enough people need this for various reasons to include it here */
+#if !defined(MACOS) && !defined(RISCOS)
+# include <sys/types.h>
+#endif
+
+/* PNG_SETJMP_NOT_SUPPORTED and PNG_NO_SETJMP_SUPPORTED are deprecated. */
+#if !defined(PNG_NO_SETJMP) && \
+ !defined(PNG_SETJMP_NOT_SUPPORTED) && !defined(PNG_NO_SETJMP_SUPPORTED)
+# define PNG_SETJMP_SUPPORTED
+#endif
+
+#ifdef PNG_SETJMP_SUPPORTED
+/* This is an attempt to force a single setjmp behaviour on Linux. If
+ * the X config stuff didn't define _BSD_SOURCE we wouldn't need this.
+ *
+ * You can bypass this test if you know that your application uses exactly
+ * the same setjmp.h that was included when libpng was built. Only define
+ * PNG_SKIP_SETJMP_CHECK while building your application, prior to the
+ * application's '#include "png.h"'. Don't define PNG_SKIP_SETJMP_CHECK
+ * while building a separate libpng library for general use.
+ */
+
+# ifndef PNG_SKIP_SETJMP_CHECK
+# ifdef __linux__
+# ifdef _BSD_SOURCE
+# define PNG_SAVE_BSD_SOURCE
+# undef _BSD_SOURCE
+# endif
+# ifdef _SETJMP_H
+ /* If you encounter a compiler error here, see the explanation
+ * near the end of INSTALL.
+ */
+ __pngconf.h__ in libpng already includes setjmp.h;
+ __dont__ include it again.;
+# endif
+# endif /* __linux__ */
+# endif /* PNG_SKIP_SETJMP_CHECK */
+
+ /* Include setjmp.h for error handling */
+# include <setjmp.h>
+
+# ifdef __linux__
+# ifdef PNG_SAVE_BSD_SOURCE
+# ifdef _BSD_SOURCE
+# undef _BSD_SOURCE
+# endif
+# define _BSD_SOURCE
+# undef PNG_SAVE_BSD_SOURCE
+# endif
+# endif /* __linux__ */
+#endif /* PNG_SETJMP_SUPPORTED */
+
+#ifdef BSD
+# include <strings.h>
+#else
+# include <string.h>
+#endif
+
+/* Other defines for things like memory and the like can go here. */
+
+/* This controls how fine the dithering gets. As this allocates
+ * a largish chunk of memory (32K), those who are not as concerned
+ * with dithering quality can decrease some or all of these.
+ */
+#ifndef PNG_DITHER_RED_BITS
+# define PNG_DITHER_RED_BITS 5
+#endif
+#ifndef PNG_DITHER_GREEN_BITS
+# define PNG_DITHER_GREEN_BITS 5
+#endif
+#ifndef PNG_DITHER_BLUE_BITS
+# define PNG_DITHER_BLUE_BITS 5
+#endif
+
+/* This controls how fine the gamma correction becomes when you
+ * are only interested in 8 bits anyway. Increasing this value
+ * results in more memory being used, and more pow() functions
+ * being called to fill in the gamma tables. Don't set this value
+ * less then 8, and even that may not work (I haven't tested it).
+ */
+
+#ifndef PNG_MAX_GAMMA_8
+# define PNG_MAX_GAMMA_8 11
+#endif
+
+/* This controls how much a difference in gamma we can tolerate before
+ * we actually start doing gamma conversion.
+ */
+#ifndef PNG_GAMMA_THRESHOLD
+# define PNG_GAMMA_THRESHOLD 0.05
+#endif
+
+/* The following uses const char * instead of char * for error
+ * and warning message functions, so some compilers won't complain.
+ * If you do not want to use const, define PNG_NO_CONST here.
+ */
+
+#ifndef PNG_CONST
+# ifndef PNG_NO_CONST
+# define PNG_CONST const
+# else
+# define PNG_CONST
+# endif
+#endif
+
+/* The following defines give you the ability to remove code from the
+ * library that you will not be using. I wish I could figure out how to
+ * automate this, but I can't do that without making it seriously hard
+ * on the users. So if you are not using an ability, change the #define
+ * to and #undef, and that part of the library will not be compiled. If
+ * your linker can't find a function, you may want to make sure the
+ * ability is defined here. Some of these depend upon some others being
+ * defined. I haven't figured out all the interactions here, so you may
+ * have to experiment awhile to get everything to compile. If you are
+ * creating or using a shared library, you probably shouldn't touch this,
+ * as it will affect the size of the structures, and this will cause bad
+ * things to happen if the library and/or application ever change.
+ */
+
+/* Any features you will not be using can be undef'ed here */
+
+/* GR-P, 0.96a: Set "*TRANSFORMS_SUPPORTED as default but allow user
+ * to turn it off with PNG_NO_READ|WRITE_TRANSFORMS on the compile line,
+ * then pick and choose which ones to define without having to edit this
+ * file. It is safe to use the PNG_NO_READ|WRITE_TRANSFORMS
+ * if you only want to have a png-compliant reader/writer but don't need
+ * any of the extra transformations. This saves about 80 kbytes in a
+ * typical installation of the library. (PNG_NO_* form added in version
+ * 1.0.1c, for consistency; PNG_*_TRANSFORMS_NOT_SUPPORTED deprecated in
+ * 1.4.0)
+ */
+
+/* Ignore attempt to turn off both floating and fixed point support */
+#if !defined(PNG_FLOATING_POINT_SUPPORTED) || \
+ !defined(PNG_NO_FIXED_POINT_SUPPORTED)
+# define PNG_FIXED_POINT_SUPPORTED
+#endif
+
+#ifdef PNG_READ_SUPPORTED
+
+/* PNG_READ_TRANSFORMS_NOT_SUPPORTED is deprecated. */
+#if !defined(PNG_READ_TRANSFORMS_NOT_SUPPORTED) && \
+ !defined(PNG_NO_READ_TRANSFORMS)
+# define PNG_READ_TRANSFORMS_SUPPORTED
+#endif
+
+#ifdef PNG_READ_TRANSFORMS_SUPPORTED
+# ifndef PNG_NO_READ_EXPAND
+# define PNG_READ_EXPAND_SUPPORTED
+# endif
+# ifndef PNG_NO_READ_SHIFT
+# define PNG_READ_SHIFT_SUPPORTED
+# endif
+# ifndef PNG_NO_READ_PACK
+# define PNG_READ_PACK_SUPPORTED
+# endif
+# ifndef PNG_NO_READ_BGR
+# define PNG_READ_BGR_SUPPORTED
+# endif
+# ifndef PNG_NO_READ_SWAP
+# define PNG_READ_SWAP_SUPPORTED
+# endif
+# ifndef PNG_NO_READ_PACKSWAP
+# define PNG_READ_PACKSWAP_SUPPORTED
+# endif
+# ifndef PNG_NO_READ_INVERT
+# define PNG_READ_INVERT_SUPPORTED
+# endif
+#if 0 /* removed from libpng-1.4.0 */
+# ifndef PNG_NO_READ_DITHER
+# define PNG_READ_DITHER_SUPPORTED
+# endif
+#endif /* 0 */
+# ifndef PNG_NO_READ_BACKGROUND
+# define PNG_READ_BACKGROUND_SUPPORTED
+# endif
+# ifndef PNG_NO_READ_16_TO_8
+# define PNG_READ_16_TO_8_SUPPORTED
+# endif
+# ifndef PNG_NO_READ_FILLER
+# define PNG_READ_FILLER_SUPPORTED
+# endif
+# ifndef PNG_NO_READ_GAMMA
+# define PNG_READ_GAMMA_SUPPORTED
+# endif
+# ifndef PNG_NO_READ_GRAY_TO_RGB
+# define PNG_READ_GRAY_TO_RGB_SUPPORTED
+# endif
+# ifndef PNG_NO_READ_SWAP_ALPHA
+# define PNG_READ_SWAP_ALPHA_SUPPORTED
+# endif
+# ifndef PNG_NO_READ_INVERT_ALPHA
+# define PNG_READ_INVERT_ALPHA_SUPPORTED
+# endif
+# ifndef PNG_NO_READ_STRIP_ALPHA
+# define PNG_READ_STRIP_ALPHA_SUPPORTED
+# endif
+# ifndef PNG_NO_READ_USER_TRANSFORM
+# define PNG_READ_USER_TRANSFORM_SUPPORTED
+# endif
+# ifndef PNG_NO_READ_RGB_TO_GRAY
+# define PNG_READ_RGB_TO_GRAY_SUPPORTED
+# endif
+#endif /* PNG_READ_TRANSFORMS_SUPPORTED */
+
+/* PNG_PROGRESSIVE_READ_NOT_SUPPORTED is deprecated. */
+#if !defined(PNG_NO_PROGRESSIVE_READ) && \
+ !defined(PNG_PROGRESSIVE_READ_NOT_SUPPORTED) /* if you don't do progressive */
+# define PNG_PROGRESSIVE_READ_SUPPORTED /* reading. This is not talking */
+#endif /* about interlacing capability! You'll */
+ /* still have interlacing unless you change the following define: */
+
+#define PNG_READ_INTERLACING_SUPPORTED /* required for PNG-compliant decoders */
+
+/* PNG_NO_SEQUENTIAL_READ_SUPPORTED is deprecated. */
+#if !defined(PNG_NO_SEQUENTIAL_READ) && \
+ !defined(PNG_SEQUENTIAL_READ_SUPPORTED) && \
+ !defined(PNG_NO_SEQUENTIAL_READ_SUPPORTED)
+# define PNG_SEQUENTIAL_READ_SUPPORTED
+#endif
+
+#ifndef PNG_NO_READ_COMPOSITE_NODIV
+# ifndef PNG_NO_READ_COMPOSITED_NODIV /* libpng-1.0.x misspelling */
+# define PNG_READ_COMPOSITE_NODIV_SUPPORTED /* well tested on Intel, SGI */
+# endif
+#endif
+
+#if !defined(PNG_NO_GET_INT_32) || defined(PNG_READ_oFFS_SUPPORTED) || \
+ defined(PNG_READ_pCAL_SUPPORTED)
+# ifndef PNG_GET_INT_32_SUPPORTED
+# define PNG_GET_INT_32_SUPPORTED
+# endif
+#endif
+
+#endif /* PNG_READ_SUPPORTED */
+
+#ifdef PNG_WRITE_SUPPORTED
+
+/* PNG_WRITE_TRANSFORMS_NOT_SUPPORTED is deprecated. */
+#if !defined(PNG_WRITE_TRANSFORMS_NOT_SUPPORTED) && \
+ !defined(PNG_NO_WRITE_TRANSFORMS)
+# define PNG_WRITE_TRANSFORMS_SUPPORTED
+#endif
+
+#ifdef PNG_WRITE_TRANSFORMS_SUPPORTED
+# ifndef PNG_NO_WRITE_SHIFT
+# define PNG_WRITE_SHIFT_SUPPORTED
+# endif
+# ifndef PNG_NO_WRITE_PACK
+# define PNG_WRITE_PACK_SUPPORTED
+# endif
+# ifndef PNG_NO_WRITE_BGR
+# define PNG_WRITE_BGR_SUPPORTED
+# endif
+# ifndef PNG_NO_WRITE_SWAP
+# define PNG_WRITE_SWAP_SUPPORTED
+# endif
+# ifndef PNG_NO_WRITE_PACKSWAP
+# define PNG_WRITE_PACKSWAP_SUPPORTED
+# endif
+# ifndef PNG_NO_WRITE_INVERT
+# define PNG_WRITE_INVERT_SUPPORTED
+# endif
+# ifndef PNG_NO_WRITE_FILLER
+# define PNG_WRITE_FILLER_SUPPORTED /* same as WRITE_STRIP_ALPHA */
+# endif
+# ifndef PNG_NO_WRITE_SWAP_ALPHA
+# define PNG_WRITE_SWAP_ALPHA_SUPPORTED
+# endif
+# ifndef PNG_NO_WRITE_INVERT_ALPHA
+# define PNG_WRITE_INVERT_ALPHA_SUPPORTED
+# endif
+# ifndef PNG_NO_WRITE_USER_TRANSFORM
+# define PNG_WRITE_USER_TRANSFORM_SUPPORTED
+# endif
+#endif /* PNG_WRITE_TRANSFORMS_SUPPORTED */
+
+#if !defined(PNG_NO_WRITE_INTERLACING_SUPPORTED) && \
+ !defined(PNG_WRITE_INTERLACING_SUPPORTED)
+ /* This is not required for PNG-compliant encoders, but can cause
+ * trouble if left undefined
+ */
+# define PNG_WRITE_INTERLACING_SUPPORTED
+#endif
+
+#if !defined(PNG_NO_WRITE_WEIGHTED_FILTER) && \
+ !defined(PNG_WRITE_WEIGHTED_FILTER) && \
+ defined(PNG_FLOATING_POINT_SUPPORTED)
+# define PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
+#endif
+
+#ifndef PNG_NO_WRITE_FLUSH
+# define PNG_WRITE_FLUSH_SUPPORTED
+#endif
+
+#if !defined(PNG_NO_SAVE_INT_32) || defined(PNG_WRITE_oFFS_SUPPORTED) || \
+ defined(PNG_WRITE_pCAL_SUPPORTED)
+# ifndef PNG_SAVE_INT_32_SUPPORTED
+# define PNG_SAVE_INT_32_SUPPORTED
+# endif
+#endif
+
+#endif /* PNG_WRITE_SUPPORTED */
+
+#define PNG_NO_ERROR_NUMBERS
+
+#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
+ defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
+# ifndef PNG_NO_USER_TRANSFORM_PTR
+# define PNG_USER_TRANSFORM_PTR_SUPPORTED
+# endif
+#endif
+
+#if defined(PNG_STDIO_SUPPORTED) && !defined(PNG_TIME_RFC1123_SUPPORTED)
+# define PNG_TIME_RFC1123_SUPPORTED
+#endif
+
+/* This adds extra functions in pngget.c for accessing data from the
+ * info pointer (added in version 0.99)
+ * png_get_image_width()
+ * png_get_image_height()
+ * png_get_bit_depth()
+ * png_get_color_type()
+ * png_get_compression_type()
+ * png_get_filter_type()
+ * png_get_interlace_type()
+ * png_get_pixel_aspect_ratio()
+ * png_get_pixels_per_meter()
+ * png_get_x_offset_pixels()
+ * png_get_y_offset_pixels()
+ * png_get_x_offset_microns()
+ * png_get_y_offset_microns()
+ */
+#if !defined(PNG_NO_EASY_ACCESS) && !defined(PNG_EASY_ACCESS_SUPPORTED)
+# define PNG_EASY_ACCESS_SUPPORTED
+#endif
+
+/* Added at libpng-1.2.0 */
+#if !defined(PNG_NO_USER_MEM) && !defined(PNG_USER_MEM_SUPPORTED)
+# define PNG_USER_MEM_SUPPORTED
+#endif
+
+/* Added at libpng-1.2.6 */
+#ifndef PNG_SET_USER_LIMITS_SUPPORTED
+# ifndef PNG_NO_SET_USER_LIMITS
+# define PNG_SET_USER_LIMITS_SUPPORTED
+# endif
+#endif
+
+/* Added at libpng-1.0.16 and 1.2.6. To accept all valid PNGs no matter
+ * how large, set these limits to 0x7fffffffL
+ */
+#ifndef PNG_USER_WIDTH_MAX
+# define PNG_USER_WIDTH_MAX 1000000L
+#endif
+#ifndef PNG_USER_HEIGHT_MAX
+# define PNG_USER_HEIGHT_MAX 1000000L
+#endif
+
+/* Added at libpng-1.4.0 */
+#ifndef PNG_USER_CHUNK_CACHE_MAX
+# define PNG_USER_CHUNK_CACHE_MAX 0x7fffffffL
+#endif
+
+/* Added at libpng-1.4.0 */
+#if !defined(PNG_NO_IO_STATE) && !defined(PNG_IO_STATE_SUPPORTED)
+# define PNG_IO_STATE_SUPPORTED
+#endif
+
+#ifndef PNG_LITERAL_SHARP
+# define PNG_LITERAL_SHARP 0x23
+#endif
+#ifndef PNG_LITERAL_LEFT_SQUARE_BRACKET
+# define PNG_LITERAL_LEFT_SQUARE_BRACKET 0x5b
+#endif
+#ifndef PNG_LITERAL_RIGHT_SQUARE_BRACKET
+# define PNG_LITERAL_RIGHT_SQUARE_BRACKET 0x5d
+#endif
+#ifndef PNG_STRING_NEWLINE
+#define PNG_STRING_NEWLINE "\n"
+#endif
+
+/* These are currently experimental features, define them if you want */
+
+/* Very little testing */
+/*
+#ifdef PNG_READ_SUPPORTED
+# ifndef PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
+# define PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
+# endif
+#endif
+*/
+
+/* This is only for PowerPC big-endian and 680x0 systems */
+/* some testing */
+/*
+#ifndef PNG_READ_BIG_ENDIAN_SUPPORTED
+# define PNG_READ_BIG_ENDIAN_SUPPORTED
+#endif
+*/
+
+#if !defined(PNG_NO_USE_READ_MACROS) && !defined(PNG_USE_READ_MACROS)
+# define PNG_USE_READ_MACROS
+#endif
+
+/* Buggy compilers (e.g., gcc 2.7.2.2) need PNG_NO_POINTER_INDEXING */
+
+#if !defined(PNG_NO_POINTER_INDEXING) && \
+ !defined(PNG_POINTER_INDEXING_SUPPORTED)
+# define PNG_POINTER_INDEXING_SUPPORTED
+#endif
+
+
+/* Any chunks you are not interested in, you can undef here. The
+ * ones that allocate memory may be expecially important (hIST,
+ * tEXt, zTXt, tRNS, pCAL). Others will just save time and make png_info
+ * a bit smaller.
+ */
+
+/* The size of the png_text structure changed in libpng-1.0.6 when
+ * iTXt support was added. iTXt support was turned off by default through
+ * libpng-1.2.x, to support old apps that malloc the png_text structure
+ * instead of calling png_set_text() and letting libpng malloc it. It
+ * was turned on by default in libpng-1.4.0.
+ */
+
+/* PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED is deprecated. */
+#if defined(PNG_READ_SUPPORTED) && \
+ !defined(PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
+ !defined(PNG_NO_READ_ANCILLARY_CHUNKS)
+# define PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
+#endif
+
+/* PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED is deprecated. */
+#if defined(PNG_WRITE_SUPPORTED) && \
+ !defined(PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
+ !defined(PNG_NO_WRITE_ANCILLARY_CHUNKS)
+# define PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
+#endif
+
+#ifdef PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
+
+#ifdef PNG_NO_READ_TEXT
+# define PNG_NO_READ_iTXt
+# define PNG_NO_READ_tEXt
+# define PNG_NO_READ_zTXt
+#endif
+
+#ifndef PNG_NO_READ_bKGD
+# define PNG_READ_bKGD_SUPPORTED
+# define PNG_bKGD_SUPPORTED
+#endif
+#ifndef PNG_NO_READ_cHRM
+# define PNG_READ_cHRM_SUPPORTED
+# define PNG_cHRM_SUPPORTED
+#endif
+#ifndef PNG_NO_READ_gAMA
+# define PNG_READ_gAMA_SUPPORTED
+# define PNG_gAMA_SUPPORTED
+#endif
+#ifndef PNG_NO_READ_hIST
+# define PNG_READ_hIST_SUPPORTED
+# define PNG_hIST_SUPPORTED
+#endif
+#ifndef PNG_NO_READ_iCCP
+# define PNG_READ_iCCP_SUPPORTED
+# define PNG_iCCP_SUPPORTED
+#endif
+#ifndef PNG_NO_READ_iTXt
+# ifndef PNG_READ_iTXt_SUPPORTED
+# define PNG_READ_iTXt_SUPPORTED
+# endif
+# ifndef PNG_iTXt_SUPPORTED
+# define PNG_iTXt_SUPPORTED
+# endif
+#endif
+#ifndef PNG_NO_READ_oFFs
+# define PNG_READ_oFFs_SUPPORTED
+# define PNG_oFFs_SUPPORTED
+#endif
+#ifndef PNG_NO_READ_pCAL
+# define PNG_READ_pCAL_SUPPORTED
+# define PNG_pCAL_SUPPORTED
+#endif
+#ifndef PNG_NO_READ_sCAL
+# define PNG_READ_sCAL_SUPPORTED
+# define PNG_sCAL_SUPPORTED
+#endif
+#ifndef PNG_NO_READ_pHYs
+# define PNG_READ_pHYs_SUPPORTED
+# define PNG_pHYs_SUPPORTED
+#endif
+#ifndef PNG_NO_READ_sBIT
+# define PNG_READ_sBIT_SUPPORTED
+# define PNG_sBIT_SUPPORTED
+#endif
+#ifndef PNG_NO_READ_sPLT
+# define PNG_READ_sPLT_SUPPORTED
+# define PNG_sPLT_SUPPORTED
+#endif
+#ifndef PNG_NO_READ_sRGB
+# define PNG_READ_sRGB_SUPPORTED
+# define PNG_sRGB_SUPPORTED
+#endif
+#ifndef PNG_NO_READ_tEXt
+# define PNG_READ_tEXt_SUPPORTED
+# define PNG_tEXt_SUPPORTED
+#endif
+#ifndef PNG_NO_READ_tIME
+# define PNG_READ_tIME_SUPPORTED
+# define PNG_tIME_SUPPORTED
+#endif
+#ifndef PNG_NO_READ_tRNS
+# define PNG_READ_tRNS_SUPPORTED
+# define PNG_tRNS_SUPPORTED
+#endif
+#ifndef PNG_NO_READ_zTXt
+# define PNG_READ_zTXt_SUPPORTED
+# define PNG_zTXt_SUPPORTED
+#endif
+#ifndef PNG_NO_READ_OPT_PLTE
+# define PNG_READ_OPT_PLTE_SUPPORTED /* only affects support of the */
+#endif /* optional PLTE chunk in RGB and RGBA images */
+#if defined(PNG_READ_iTXt_SUPPORTED) || defined(PNG_READ_tEXt_SUPPORTED) || \
+ defined(PNG_READ_zTXt_SUPPORTED)
+# define PNG_READ_TEXT_SUPPORTED
+# define PNG_TEXT_SUPPORTED
+#endif
+
+#endif /* PNG_READ_ANCILLARY_CHUNKS_SUPPORTED */
+
+#ifndef PNG_NO_READ_UNKNOWN_CHUNKS
+# define PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
+# ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
+# define PNG_UNKNOWN_CHUNKS_SUPPORTED
+# endif
+#endif
+#if !defined(PNG_NO_READ_USER_CHUNKS) && \
+ defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED)
+# define PNG_READ_USER_CHUNKS_SUPPORTED
+# define PNG_USER_CHUNKS_SUPPORTED
+# ifdef PNG_NO_READ_UNKNOWN_CHUNKS
+# undef PNG_NO_READ_UNKNOWN_CHUNKS
+# endif
+# ifdef PNG_NO_HANDLE_AS_UNKNOWN
+# undef PNG_NO_HANDLE_AS_UNKNOWN
+# endif
+#endif
+#ifndef PNG_NO_HANDLE_AS_UNKNOWN
+# ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
+# define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
+# endif
+#endif
+
+#ifdef PNG_WRITE_SUPPORTED
+#ifdef PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
+
+#ifdef PNG_NO_WRITE_TEXT
+# define PNG_NO_WRITE_iTXt
+# define PNG_NO_WRITE_tEXt
+# define PNG_NO_WRITE_zTXt
+#endif
+#ifndef PNG_NO_WRITE_bKGD
+# define PNG_WRITE_bKGD_SUPPORTED
+# ifndef PNG_bKGD_SUPPORTED
+# define PNG_bKGD_SUPPORTED
+# endif
+#endif
+#ifndef PNG_NO_WRITE_cHRM
+# define PNG_WRITE_cHRM_SUPPORTED
+# ifndef PNG_cHRM_SUPPORTED
+# define PNG_cHRM_SUPPORTED
+# endif
+#endif
+#ifndef PNG_NO_WRITE_gAMA
+# define PNG_WRITE_gAMA_SUPPORTED
+# ifndef PNG_gAMA_SUPPORTED
+# define PNG_gAMA_SUPPORTED
+# endif
+#endif
+#ifndef PNG_NO_WRITE_hIST
+# define PNG_WRITE_hIST_SUPPORTED
+# ifndef PNG_hIST_SUPPORTED
+# define PNG_hIST_SUPPORTED
+# endif
+#endif
+#ifndef PNG_NO_WRITE_iCCP
+# define PNG_WRITE_iCCP_SUPPORTED
+# ifndef PNG_iCCP_SUPPORTED
+# define PNG_iCCP_SUPPORTED
+# endif
+#endif
+#ifndef PNG_NO_WRITE_iTXt
+# ifndef PNG_WRITE_iTXt_SUPPORTED
+# define PNG_WRITE_iTXt_SUPPORTED
+# endif
+# ifndef PNG_iTXt_SUPPORTED
+# define PNG_iTXt_SUPPORTED
+# endif
+#endif
+#ifndef PNG_NO_WRITE_oFFs
+# define PNG_WRITE_oFFs_SUPPORTED
+# ifndef PNG_oFFs_SUPPORTED
+# define PNG_oFFs_SUPPORTED
+# endif
+#endif
+#ifndef PNG_NO_WRITE_pCAL
+# define PNG_WRITE_pCAL_SUPPORTED
+# ifndef PNG_pCAL_SUPPORTED
+# define PNG_pCAL_SUPPORTED
+# endif
+#endif
+#ifndef PNG_NO_WRITE_sCAL
+# define PNG_WRITE_sCAL_SUPPORTED
+# ifndef PNG_sCAL_SUPPORTED
+# define PNG_sCAL_SUPPORTED
+# endif
+#endif
+#ifndef PNG_NO_WRITE_pHYs
+# define PNG_WRITE_pHYs_SUPPORTED
+# ifndef PNG_pHYs_SUPPORTED
+# define PNG_pHYs_SUPPORTED
+# endif
+#endif
+#ifndef PNG_NO_WRITE_sBIT
+# define PNG_WRITE_sBIT_SUPPORTED
+# ifndef PNG_sBIT_SUPPORTED
+# define PNG_sBIT_SUPPORTED
+# endif
+#endif
+#ifndef PNG_NO_WRITE_sPLT
+# define PNG_WRITE_sPLT_SUPPORTED
+# ifndef PNG_sPLT_SUPPORTED
+# define PNG_sPLT_SUPPORTED
+# endif
+#endif
+#ifndef PNG_NO_WRITE_sRGB
+# define PNG_WRITE_sRGB_SUPPORTED
+# ifndef PNG_sRGB_SUPPORTED
+# define PNG_sRGB_SUPPORTED
+# endif
+#endif
+#ifndef PNG_NO_WRITE_tEXt
+# define PNG_WRITE_tEXt_SUPPORTED
+# ifndef PNG_tEXt_SUPPORTED
+# define PNG_tEXt_SUPPORTED
+# endif
+#endif
+#ifndef PNG_NO_WRITE_tIME
+# define PNG_WRITE_tIME_SUPPORTED
+# ifndef PNG_tIME_SUPPORTED
+# define PNG_tIME_SUPPORTED
+# endif
+#endif
+#ifndef PNG_NO_WRITE_tRNS
+# define PNG_WRITE_tRNS_SUPPORTED
+# ifndef PNG_tRNS_SUPPORTED
+# define PNG_tRNS_SUPPORTED
+# endif
+#endif
+#ifndef PNG_NO_WRITE_zTXt
+# define PNG_WRITE_zTXt_SUPPORTED
+# ifndef PNG_zTXt_SUPPORTED
+# define PNG_zTXt_SUPPORTED
+# endif
+#endif
+#if defined(PNG_WRITE_iTXt_SUPPORTED) || defined(PNG_WRITE_tEXt_SUPPORTED) || \
+ defined(PNG_WRITE_zTXt_SUPPORTED)
+# define PNG_WRITE_TEXT_SUPPORTED
+# ifndef PNG_TEXT_SUPPORTED
+# define PNG_TEXT_SUPPORTED
+# endif
+#endif
+
+#ifdef PNG_WRITE_tIME_SUPPORTED
+# ifndef PNG_NO_CONVERT_tIME
+# ifndef _WIN32_WCE
+/* The "tm" structure is not supported on WindowsCE */
+# ifndef PNG_CONVERT_tIME_SUPPORTED
+# define PNG_CONVERT_tIME_SUPPORTED
+# endif
+# endif
+# endif
+#endif
+
+#endif /* PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED */
+
+#if !defined(PNG_NO_WRITE_FILTER) && !defined(PNG_WRITE_FILTER_SUPPORTED)
+# define PNG_WRITE_FILTER_SUPPORTED
+#endif
+
+#ifndef PNG_NO_WRITE_UNKNOWN_CHUNKS
+# define PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
+# ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
+# define PNG_UNKNOWN_CHUNKS_SUPPORTED
+# endif
+#endif
+#ifndef PNG_NO_HANDLE_AS_UNKNOWN
+# ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
+# define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
+# endif
+#endif
+#endif /* PNG_WRITE_SUPPORTED */
+
+/* Turn this off to disable png_read_png() and
+ * png_write_png() and leave the row_pointers member
+ * out of the info structure.
+ */
+#ifndef PNG_NO_INFO_IMAGE
+# define PNG_INFO_IMAGE_SUPPORTED
+#endif
+
+/* Need the time information for converting tIME chunks */
+#ifdef PNG_CONVERT_tIME_SUPPORTED
+ /* "time.h" functions are not supported on WindowsCE */
+# include <time.h>
+#endif
+
+/* Some typedefs to get us started. These should be safe on most of the
+ * common platforms. The typedefs should be at least as large as the
+ * numbers suggest (a png_uint_32 must be at least 32 bits long), but they
+ * don't have to be exactly that size. Some compilers dislike passing
+ * unsigned shorts as function parameters, so you may be better off using
+ * unsigned int for png_uint_16.
+ */
+
+#if defined(INT_MAX) && (INT_MAX > 0x7ffffffeL)
+typedef unsigned int png_uint_32;
+typedef int png_int_32;
+#else
+typedef unsigned long png_uint_32;
+typedef long png_int_32;
+#endif
+typedef unsigned short png_uint_16;
+typedef short png_int_16;
+typedef unsigned char png_byte;
+
+#ifdef PNG_NO_SIZE_T
+ typedef unsigned int png_size_t;
+#else
+ typedef size_t png_size_t;
+#endif
+#define png_sizeof(x) sizeof(x)
+
+/* The following is needed for medium model support. It cannot be in the
+ * pngpriv.h header. Needs modification for other compilers besides
+ * MSC. Model independent support declares all arrays and pointers to be
+ * large using the far keyword. The zlib version used must also support
+ * model independent data. As of version zlib 1.0.4, the necessary changes
+ * have been made in zlib. The USE_FAR_KEYWORD define triggers other
+ * changes that are needed. (Tim Wegner)
+ */
+
+/* Separate compiler dependencies (problem here is that zlib.h always
+ * defines FAR. (SJT)
+ */
+#ifdef __BORLANDC__
+# if defined(__LARGE__) || defined(__HUGE__) || defined(__COMPACT__)
+# define LDATA 1
+# else
+# define LDATA 0
+# endif
+ /* GRR: why is Cygwin in here? Cygwin is not Borland C... */
+# if !defined(__WIN32__) && !defined(__FLAT__) && !defined(__CYGWIN__)
+# define PNG_MAX_MALLOC_64K
+# if (LDATA != 1)
+# ifndef FAR
+# define FAR __far
+# endif
+# define USE_FAR_KEYWORD
+# endif /* LDATA != 1 */
+ /* Possibly useful for moving data out of default segment.
+ * Uncomment it if you want. Could also define FARDATA as
+ * const if your compiler supports it. (SJT)
+# define FARDATA FAR
+ */
+# endif /* __WIN32__, __FLAT__, __CYGWIN__ */
+#endif /* __BORLANDC__ */
+
+
+/* Suggest testing for specific compiler first before testing for
+ * FAR. The Watcom compiler defines both __MEDIUM__ and M_I86MM,
+ * making reliance oncertain keywords suspect. (SJT)
+ */
+
+/* MSC Medium model */
+#ifdef FAR
+# ifdef M_I86MM
+# define USE_FAR_KEYWORD
+# define FARDATA FAR
+# include <dos.h>
+# endif
+#endif
+
+/* SJT: default case */
+#ifndef FAR
+# define FAR
+#endif
+
+/* At this point FAR is always defined */
+#ifndef FARDATA
+# define FARDATA
+#endif
+
+/* Typedef for floating-point numbers that are converted
+ to fixed-point with a multiple of 100,000, e.g., int_gamma */
+typedef png_int_32 png_fixed_point;
+
+/* Add typedefs for pointers */
+typedef void FAR * png_voidp;
+typedef png_byte FAR * png_bytep;
+typedef png_uint_32 FAR * png_uint_32p;
+typedef png_int_32 FAR * png_int_32p;
+typedef png_uint_16 FAR * png_uint_16p;
+typedef png_int_16 FAR * png_int_16p;
+typedef PNG_CONST char FAR * png_const_charp;
+typedef char FAR * png_charp;
+typedef png_fixed_point FAR * png_fixed_point_p;
+
+#ifndef PNG_NO_STDIO
+typedef FILE * png_FILE_p;
+#endif
+
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+typedef double FAR * png_doublep;
+#endif
+
+/* Pointers to pointers; i.e. arrays */
+typedef png_byte FAR * FAR * png_bytepp;
+typedef png_uint_32 FAR * FAR * png_uint_32pp;
+typedef png_int_32 FAR * FAR * png_int_32pp;
+typedef png_uint_16 FAR * FAR * png_uint_16pp;
+typedef png_int_16 FAR * FAR * png_int_16pp;
+typedef PNG_CONST char FAR * FAR * png_const_charpp;
+typedef char FAR * FAR * png_charpp;
+typedef png_fixed_point FAR * FAR * png_fixed_point_pp;
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+typedef double FAR * FAR * png_doublepp;
+#endif
+
+/* Pointers to pointers to pointers; i.e., pointer to array */
+typedef char FAR * FAR * FAR * png_charppp;
+
+/* Define PNG_BUILD_DLL if the module being built is a Windows
+ * LIBPNG DLL.
+ *
+ * Define PNG_USE_DLL if you want to *link* to the Windows LIBPNG DLL.
+ * It is equivalent to Microsoft predefined macro _DLL that is
+ * automatically defined when you compile using the share
+ * version of the CRT (C Run-Time library)
+ *
+ * The cygwin mods make this behavior a little different:
+ * Define PNG_BUILD_DLL if you are building a dll for use with cygwin
+ * Define PNG_STATIC if you are building a static library for use with cygwin,
+ * -or- if you are building an application that you want to link to the
+ * static library.
+ * PNG_USE_DLL is defined by default (no user action needed) unless one of
+ * the other flags is defined.
+ */
+
+#if !defined(PNG_DLL) && (defined(PNG_BUILD_DLL) || defined(PNG_USE_DLL))
+# define PNG_DLL
+#endif
+
+#ifdef __CYGWIN__
+# undef PNGAPI
+# define PNGAPI __cdecl
+# undef PNG_IMPEXP
+# define PNG_IMPEXP
+#endif
+
+#define PNG_USE_LOCAL_ARRAYS /* Not used in libpng, defined for legacy apps */
+
+/* If you define PNGAPI, e.g., with compiler option "-DPNGAPI=__stdcall",
+ * you may get warnings regarding the linkage of png_zalloc and png_zfree.
+ * Don't ignore those warnings; you must also reset the default calling
+ * convention in your compiler to match your PNGAPI, and you must build
+ * zlib and your applications the same way you build libpng.
+ */
+
+#if defined(__MINGW32__) && !defined(PNG_MODULEDEF)
+# ifndef PNG_NO_MODULEDEF
+# define PNG_NO_MODULEDEF
+# endif
+#endif
+
+#if !defined(PNG_IMPEXP) && defined(PNG_BUILD_DLL) && !defined(PNG_NO_MODULEDEF)
+# define PNG_IMPEXP
+#endif
+
+#if defined(PNG_DLL) || defined(_DLL) || defined(__DLL__ ) || \
+ (( defined(_Windows) || defined(_WINDOWS) || \
+ defined(WIN32) || defined(_WIN32) || defined(__WIN32__) ))
+
+# ifndef PNGAPI
+# if defined(__GNUC__) || (defined (_MSC_VER) && (_MSC_VER >= 800))
+# define PNGAPI __cdecl
+# else
+# define PNGAPI _cdecl
+# endif
+# endif
+
+# if !defined(PNG_IMPEXP) && (!defined(PNG_DLL) || \
+ 0 /* WINCOMPILER_WITH_NO_SUPPORT_FOR_DECLIMPEXP */)
+# define PNG_IMPEXP
+# endif
+
+# ifndef PNG_IMPEXP
+
+# define PNG_EXPORT_TYPE1(type,symbol) PNG_IMPEXP type PNGAPI symbol
+# define PNG_EXPORT_TYPE2(type,symbol) type PNG_IMPEXP PNGAPI symbol
+
+ /* Borland/Microsoft */
+# if defined(_MSC_VER) || defined(__BORLANDC__)
+# if (_MSC_VER >= 800) || (__BORLANDC__ >= 0x500)
+# define PNG_EXPORT PNG_EXPORT_TYPE1
+# else
+# define PNG_EXPORT PNG_EXPORT_TYPE2
+# ifdef PNG_BUILD_DLL
+# define PNG_IMPEXP __export
+# else
+# define PNG_IMPEXP /*__import */ /* doesn't exist AFAIK in VC++ */
+# endif /* Exists in Borland C++ for
+ C++ classes (== huge) */
+# endif
+# endif
+
+# ifndef PNG_IMPEXP
+# ifdef PNG_BUILD_DLL
+# define PNG_IMPEXP __declspec(dllexport)
+# else
+# define PNG_IMPEXP __declspec(dllimport)
+# endif
+# endif
+# endif /* PNG_IMPEXP */
+#else /* !(DLL || non-cygwin WINDOWS) */
+# if (defined(__IBMC__) || defined(__IBMCPP__)) && defined(__OS2__)
+# ifndef PNGAPI
+# define PNGAPI _System
+# endif
+# else
+# if 0 /* ... other platforms, with other meanings */
+# endif
+# endif
+#endif
+
+#ifndef PNGAPI
+# define PNGAPI
+#endif
+#ifndef PNG_IMPEXP
+# define PNG_IMPEXP
+#endif
+
+#ifdef PNG_BUILDSYMS
+# ifndef PNG_EXPORT
+# define PNG_EXPORT(type,symbol) PNG_FUNCTION_EXPORT symbol END
+# endif
+#endif
+
+#ifndef PNG_EXPORT
+# define PNG_EXPORT(type,symbol) PNG_IMPEXP type PNGAPI symbol
+#endif
+
+/* Support for compiler specific function attributes. These are used
+ * so that where compiler support is available incorrect use of API
+ * functions in png.h will generate compiler warnings.
+ *
+ * Added at libpng-1.2.41.
+ */
+
+#ifndef PNG_NO_PEDANTIC_WARNINGS
+# ifndef PNG_PEDANTIC_WARNINGS_SUPPORTED
+# define PNG_PEDANTIC_WARNINGS_SUPPORTED
+# endif
+#endif
+
+#ifdef PNG_PEDANTIC_WARNINGS_SUPPORTED
+/* Support for compiler specific function attributes. These are used
+ * so that where compiler support is available incorrect use of API
+ * functions in png.h will generate compiler warnings. Added at libpng
+ * version 1.2.41.
+ */
+# ifdef __GNUC__
+# ifndef PNG_USE_RESULT
+# define PNG_USE_RESULT __attribute__((__warn_unused_result__))
+# endif
+# ifndef PNG_NORETURN
+# define PNG_NORETURN __attribute__((__noreturn__))
+# endif
+# ifndef PNG_ALLOCATED
+# define PNG_ALLOCATED __attribute__((__malloc__))
+# endif
+
+ /* This specifically protects structure members that should only be
+ * accessed from within the library, therefore should be empty during
+ * a library build.
+ */
+# ifndef PNG_DEPRECATED
+# define PNG_DEPRECATED __attribute__((__deprecated__))
+# endif
+# ifndef PNG_DEPSTRUCT
+# define PNG_DEPSTRUCT __attribute__((__deprecated__))
+# endif
+# ifndef PNG_PRIVATE
+# if 0 /* Doesn't work so we use deprecated instead*/
+# define PNG_PRIVATE \
+ __attribute__((warning("This function is not exported by libpng.")))
+# else
+# define PNG_PRIVATE \
+ __attribute__((__deprecated__))
+# endif
+# endif /* PNG_PRIVATE */
+# endif /* __GNUC__ */
+#endif /* PNG_PEDANTIC_WARNINGS */
+
+#ifndef PNG_DEPRECATED
+# define PNG_DEPRECATED /* Use of this function is deprecated */
+#endif
+#ifndef PNG_USE_RESULT
+# define PNG_USE_RESULT /* The result of this function must be checked */
+#endif
+#ifndef PNG_NORETURN
+# define PNG_NORETURN /* This function does not return */
+#endif
+#ifndef PNG_ALLOCATED
+# define PNG_ALLOCATED /* The result of the function is new memory */
+#endif
+#ifndef PNG_DEPSTRUCT
+# define PNG_DEPSTRUCT /* Access to this struct member is deprecated */
+#endif
+#ifndef PNG_PRIVATE
+# define PNG_PRIVATE /* This is a private libpng function */
+#endif
+
+/* Users may want to use these so they are not private. Any library
+ * functions that are passed far data must be model-independent.
+ */
+
+/* memory model/platform independent fns */
+#ifndef PNG_ABORT
+# ifdef _WINDOWS_
+# define PNG_ABORT() ExitProcess(0)
+# else
+# define PNG_ABORT() abort()
+# endif
+#endif
+
+#ifdef USE_FAR_KEYWORD
+/* Use this to make far-to-near assignments */
+# define CHECK 1
+# define NOCHECK 0
+# define CVT_PTR(ptr) (png_far_to_near(png_ptr,ptr,CHECK))
+# define CVT_PTR_NOCHECK(ptr) (png_far_to_near(png_ptr,ptr,NOCHECK))
+# define png_strcpy _fstrcpy
+# define png_strncpy _fstrncpy /* Added to v 1.2.6 */
+# define png_strlen _fstrlen
+# define png_memcmp _fmemcmp /* SJT: added */
+# define png_memcpy _fmemcpy
+# define png_memset _fmemset
+# define png_sprintf sprintf
+#else
+# ifdef _WINDOWS_ /* Favor Windows over C runtime fns */
+# define CVT_PTR(ptr) (ptr)
+# define CVT_PTR_NOCHECK(ptr) (ptr)
+# define png_strcpy lstrcpyA
+# define png_strncpy lstrcpynA
+# define png_strlen lstrlenA
+# define png_memcmp memcmp
+# define png_memcpy CopyMemory
+# define png_memset memset
+# define png_sprintf wsprintfA
+# else
+# define CVT_PTR(ptr) (ptr)
+# define CVT_PTR_NOCHECK(ptr) (ptr)
+# define png_strcpy strcpy
+# define png_strncpy strncpy /* Added to v 1.2.6 */
+# define png_strlen strlen
+# define png_memcmp memcmp /* SJT: added */
+# define png_memcpy memcpy
+# define png_memset memset
+# define png_sprintf sprintf
+# ifndef PNG_NO_SNPRINTF
+# ifdef _MSC_VER
+# define png_snprintf _snprintf /* Added to v 1.2.19 */
+# define png_snprintf2 _snprintf
+# define png_snprintf6 _snprintf
+# else
+# define png_snprintf snprintf /* Added to v 1.2.19 */
+# define png_snprintf2 snprintf
+# define png_snprintf6 snprintf
+# endif
+# else
+ /* You don't have or don't want to use snprintf(). Caution: Using
+ * sprintf instead of snprintf exposes your application to accidental
+ * or malevolent buffer overflows. If you don't have snprintf()
+ * as a general rule you should provide one (you can get one from
+ * Portable OpenSSH).
+ */
+# define png_snprintf(s1,n,fmt,x1) sprintf(s1,fmt,x1)
+# define png_snprintf2(s1,n,fmt,x1,x2) sprintf(s1,fmt,x1,x2)
+# define png_snprintf6(s1,n,fmt,x1,x2,x3,x4,x5,x6) \
+ sprintf(s1,fmt,x1,x2,x3,x4,x5,x6)
+# endif
+# endif
+#endif
+
+/* png_alloc_size_t is guaranteed to be no smaller than png_size_t,
+ * and no smaller than png_uint_32. Casts from png_size_t or png_uint_32
+ * to png_alloc_size_t are not necessary; in fact, it is recommended
+ * not to use them at all so that the compiler can complain when something
+ * turns out to be problematic.
+ * Casts in the other direction (from png_alloc_size_t to png_size_t or
+ * png_uint_32) should be explicitly applied; however, we do not expect
+ * to encounter practical situations that require such conversions.
+ */
+#if defined(__TURBOC__) && !defined(__FLAT__)
+# define png_mem_alloc farmalloc
+# define png_mem_free farfree
+ typedef unsigned long png_alloc_size_t;
+#else
+# if defined(_MSC_VER) && defined(MAXSEG_64K)
+# define png_mem_alloc(s) halloc(s, 1)
+# define png_mem_free hfree
+ typedef unsigned long png_alloc_size_t;
+# else
+# if defined(_WINDOWS_) && (!defined(INT_MAX) || INT_MAX <= 0x7ffffffeL)
+# define png_mem_alloc(s) HeapAlloc(GetProcessHeap(), 0, s)
+# define png_mem_free(p) HeapFree(GetProcessHeap(), 0, p)
+ typedef DWORD png_alloc_size_t;
+# else
+# define png_mem_alloc malloc
+# define png_mem_free free
+ typedef png_size_t png_alloc_size_t;
+# endif
+# endif
+#endif
+/* End of memory model/platform independent support */
+
+/* Just a little check that someone hasn't tried to define something
+ * contradictory.
+ */
+#if (PNG_ZBUF_SIZE > 65536L) && defined(PNG_MAX_MALLOC_64K)
+# undef PNG_ZBUF_SIZE
+# define PNG_ZBUF_SIZE 65536L
+#endif
+
+
+/* Added at libpng-1.2.8 */
+#endif /* PNG_VERSION_INFO_ONLY */
+
+#endif /* PNGCONF_H */
diff --git a/src/3rdparty/libpng/pngerror.c b/src/3rdparty/libpng/pngerror.c
new file mode 100644
index 0000000..633eae2
--- /dev/null
+++ b/src/3rdparty/libpng/pngerror.c
@@ -0,0 +1,402 @@
+
+/* pngerror.c - stub functions for i/o and memory allocation
+ *
+ * Last changed in libpng 1.4.0 [January 3, 2010]
+ * Copyright (c) 1998-2010 Glenn Randers-Pehrson
+ * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
+ * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ *
+ * This file provides a location for all error handling. Users who
+ * need special error handling are expected to write replacement functions
+ * and use png_set_error_fn() to use those functions. See the instructions
+ * at each function.
+ */
+
+#define PNG_NO_PEDANTIC_WARNINGS
+#include "png.h"
+#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
+#include "pngpriv.h"
+
+static void /* PRIVATE */
+png_default_error PNGARG((png_structp png_ptr,
+ png_const_charp error_message)) PNG_NORETURN;
+#ifdef PNG_WARNINGS_SUPPORTED
+static void /* PRIVATE */
+png_default_warning PNGARG((png_structp png_ptr,
+ png_const_charp warning_message));
+#endif /* PNG_WARNINGS_SUPPORTED */
+
+/* This function is called whenever there is a fatal error. This function
+ * should not be changed. If there is a need to handle errors differently,
+ * you should supply a replacement error function and use png_set_error_fn()
+ * to replace the error function at run-time.
+ */
+#ifdef PNG_ERROR_TEXT_SUPPORTED
+void PNGAPI
+png_error(png_structp png_ptr, png_const_charp error_message)
+{
+#ifdef PNG_ERROR_NUMBERS_SUPPORTED
+ char msg[16];
+ if (png_ptr != NULL)
+ {
+ if (png_ptr->flags&
+ (PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT))
+ {
+ if (*error_message == PNG_LITERAL_SHARP)
+ {
+ /* Strip "#nnnn " from beginning of error message. */
+ int offset;
+ for (offset = 1; offset<15; offset++)
+ if (error_message[offset] == ' ')
+ break;
+ if (png_ptr->flags&PNG_FLAG_STRIP_ERROR_TEXT)
+ {
+ int i;
+ for (i = 0; i < offset - 1; i++)
+ msg[i] = error_message[i + 1];
+ msg[i - 1] = '\0';
+ error_message = msg;
+ }
+ else
+ error_message += offset;
+ }
+ else
+ {
+ if (png_ptr->flags&PNG_FLAG_STRIP_ERROR_TEXT)
+ {
+ msg[0] = '0';
+ msg[1] = '\0';
+ error_message = msg;
+ }
+ }
+ }
+ }
+#endif
+ if (png_ptr != NULL && png_ptr->error_fn != NULL)
+ (*(png_ptr->error_fn))(png_ptr, error_message);
+
+ /* If the custom handler doesn't exist, or if it returns,
+ use the default handler, which will not return. */
+ png_default_error(png_ptr, error_message);
+}
+#else
+void PNGAPI
+png_err(png_structp png_ptr)
+{
+ if (png_ptr != NULL && png_ptr->error_fn != NULL)
+ (*(png_ptr->error_fn))(png_ptr, '\0');
+
+ /* If the custom handler doesn't exist, or if it returns,
+ use the default handler, which will not return. */
+ png_default_error(png_ptr, '\0');
+}
+#endif /* PNG_ERROR_TEXT_SUPPORTED */
+
+#ifdef PNG_WARNINGS_SUPPORTED
+/* This function is called whenever there is a non-fatal error. This function
+ * should not be changed. If there is a need to handle warnings differently,
+ * you should supply a replacement warning function and use
+ * png_set_error_fn() to replace the warning function at run-time.
+ */
+void PNGAPI
+png_warning(png_structp png_ptr, png_const_charp warning_message)
+{
+ int offset = 0;
+ if (png_ptr != NULL)
+ {
+#ifdef PNG_ERROR_NUMBERS_SUPPORTED
+ if (png_ptr->flags&
+ (PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT))
+#endif
+ {
+ if (*warning_message == PNG_LITERAL_SHARP)
+ {
+ for (offset = 1; offset < 15; offset++)
+ if (warning_message[offset] == ' ')
+ break;
+ }
+ }
+ }
+ if (png_ptr != NULL && png_ptr->warning_fn != NULL)
+ (*(png_ptr->warning_fn))(png_ptr, warning_message + offset);
+ else
+ png_default_warning(png_ptr, warning_message + offset);
+}
+#endif /* PNG_WARNINGS_SUPPORTED */
+
+#ifdef PNG_BENIGN_ERRORS_SUPPORTED
+void PNGAPI
+png_benign_error(png_structp png_ptr, png_const_charp error_message)
+{
+ if (png_ptr->flags & PNG_FLAG_BENIGN_ERRORS_WARN)
+ png_warning(png_ptr, error_message);
+ else
+ png_error(png_ptr, error_message);
+}
+#endif
+
+/* These utilities are used internally to build an error message that relates
+ * to the current chunk. The chunk name comes from png_ptr->chunk_name,
+ * this is used to prefix the message. The message is limited in length
+ * to 63 bytes, the name characters are output as hex digits wrapped in []
+ * if the character is invalid.
+ */
+#define isnonalpha(c) ((c) < 65 || (c) > 122 || ((c) > 90 && (c) < 97))
+static PNG_CONST char png_digit[16] = {
+ '0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
+ 'A', 'B', 'C', 'D', 'E', 'F'
+};
+
+#define PNG_MAX_ERROR_TEXT 64
+#if defined(PNG_WARNINGS_SUPPORTED) || defined(PNG_ERROR_TEXT_SUPPORTED)
+static void /* PRIVATE */
+png_format_buffer(png_structp png_ptr, png_charp buffer, png_const_charp
+ error_message)
+{
+ int iout = 0, iin = 0;
+
+ while (iin < 4)
+ {
+ int c = png_ptr->chunk_name[iin++];
+ if (isnonalpha(c))
+ {
+ buffer[iout++] = PNG_LITERAL_LEFT_SQUARE_BRACKET;
+ buffer[iout++] = png_digit[(c & 0xf0) >> 4];
+ buffer[iout++] = png_digit[c & 0x0f];
+ buffer[iout++] = PNG_LITERAL_RIGHT_SQUARE_BRACKET;
+ }
+ else
+ {
+ buffer[iout++] = (png_byte)c;
+ }
+ }
+
+ if (error_message == NULL)
+ buffer[iout] = '\0';
+ else
+ {
+ buffer[iout++] = ':';
+ buffer[iout++] = ' ';
+ png_memcpy(buffer + iout, error_message, PNG_MAX_ERROR_TEXT);
+ buffer[iout + PNG_MAX_ERROR_TEXT - 1] = '\0';
+ }
+}
+
+#ifdef PNG_READ_SUPPORTED
+void PNGAPI
+png_chunk_error(png_structp png_ptr, png_const_charp error_message)
+{
+ char msg[18+PNG_MAX_ERROR_TEXT];
+ if (png_ptr == NULL)
+ png_error(png_ptr, error_message);
+ else
+ {
+ png_format_buffer(png_ptr, msg, error_message);
+ png_error(png_ptr, msg);
+ }
+}
+#endif /* PNG_READ_SUPPORTED */
+#endif /* PNG_WARNINGS_SUPPORTED || PNG_ERROR_TEXT_SUPPORTED */
+
+#ifdef PNG_WARNINGS_SUPPORTED
+void PNGAPI
+png_chunk_warning(png_structp png_ptr, png_const_charp warning_message)
+{
+ char msg[18+PNG_MAX_ERROR_TEXT];
+ if (png_ptr == NULL)
+ png_warning(png_ptr, warning_message);
+ else
+ {
+ png_format_buffer(png_ptr, msg, warning_message);
+ png_warning(png_ptr, msg);
+ }
+}
+#endif /* PNG_WARNINGS_SUPPORTED */
+
+#ifdef PNG_READ_SUPPORTED
+#ifdef PNG_BENIGN_ERRORS_SUPPORTED
+void PNGAPI
+png_chunk_benign_error(png_structp png_ptr, png_const_charp error_message)
+{
+ if (png_ptr->flags & PNG_FLAG_BENIGN_ERRORS_WARN)
+ png_chunk_warning(png_ptr, error_message);
+ else
+ png_chunk_error(png_ptr, error_message);
+}
+#endif
+#endif /* PNG_READ_SUPPORTED */
+
+#ifdef PNG_SETJMP_SUPPORTED
+/* This API only exists if ANSI-C style error handling is used,
+ * otherwise it is necessary for png_default_error to be overridden.
+ */
+jmp_buf* PNGAPI
+png_set_longjmp_fn(png_structp png_ptr, png_longjmp_ptr longjmp_fn,
+ size_t jmp_buf_size)
+{
+ if (png_ptr == NULL || jmp_buf_size != png_sizeof(jmp_buf))
+ return NULL;
+
+ png_ptr->longjmp_fn = longjmp_fn;
+ return &png_ptr->jmpbuf;
+}
+#endif
+
+/* This is the default error handling function. Note that replacements for
+ * this function MUST NOT RETURN, or the program will likely crash. This
+ * function is used by default, or if the program supplies NULL for the
+ * error function pointer in png_set_error_fn().
+ */
+static void /* PRIVATE */
+png_default_error(png_structp png_ptr, png_const_charp error_message)
+{
+#ifdef PNG_CONSOLE_IO_SUPPORTED
+#ifdef PNG_ERROR_NUMBERS_SUPPORTED
+ if (*error_message == PNG_LITERAL_SHARP)
+ {
+ /* Strip "#nnnn " from beginning of error message. */
+ int offset;
+ char error_number[16];
+ for (offset = 0; offset<15; offset++)
+ {
+ error_number[offset] = error_message[offset + 1];
+ if (error_message[offset] == ' ')
+ break;
+ }
+ if ((offset > 1) && (offset < 15))
+ {
+ error_number[offset - 1] = '\0';
+ fprintf(stderr, "libpng error no. %s: %s",
+ error_number, error_message + offset + 1);
+ fprintf(stderr, PNG_STRING_NEWLINE);
+ }
+ else
+ {
+ fprintf(stderr, "libpng error: %s, offset=%d",
+ error_message, offset);
+ fprintf(stderr, PNG_STRING_NEWLINE);
+ }
+ }
+ else
+#endif
+ {
+ fprintf(stderr, "libpng error: %s", error_message);
+ fprintf(stderr, PNG_STRING_NEWLINE);
+ }
+#endif
+
+#ifdef PNG_SETJMP_SUPPORTED
+ if (png_ptr && png_ptr->longjmp_fn)
+ {
+# ifdef USE_FAR_KEYWORD
+ {
+ jmp_buf jmpbuf;
+ png_memcpy(jmpbuf, png_ptr->jmpbuf, png_sizeof(jmp_buf));
+ png_ptr->longjmp_fn(jmpbuf, 1);
+ }
+# else
+ png_ptr->longjmp_fn(png_ptr->jmpbuf, 1);
+# endif
+ }
+#endif
+ /* Here if not setjmp support or if png_ptr is null. */
+ PNG_ABORT();
+#ifndef PNG_CONSOLE_IO_SUPPORTED
+ error_message = error_message; /* Make compiler happy */
+#endif
+}
+
+#ifdef PNG_WARNINGS_SUPPORTED
+/* This function is called when there is a warning, but the library thinks
+ * it can continue anyway. Replacement functions don't have to do anything
+ * here if you don't want them to. In the default configuration, png_ptr is
+ * not used, but it is passed in case it may be useful.
+ */
+static void /* PRIVATE */
+png_default_warning(png_structp png_ptr, png_const_charp warning_message)
+{
+#ifdef PNG_CONSOLE_IO_SUPPORTED
+# ifdef PNG_ERROR_NUMBERS_SUPPORTED
+ if (*warning_message == PNG_LITERAL_SHARP)
+ {
+ int offset;
+ char warning_number[16];
+ for (offset = 0; offset < 15; offset++)
+ {
+ warning_number[offset] = warning_message[offset + 1];
+ if (warning_message[offset] == ' ')
+ break;
+ }
+ if ((offset > 1) && (offset < 15))
+ {
+ warning_number[offset + 1] = '\0';
+ fprintf(stderr, "libpng warning no. %s: %s",
+ warning_number, warning_message + offset);
+ fprintf(stderr, PNG_STRING_NEWLINE);
+ }
+ else
+ {
+ fprintf(stderr, "libpng warning: %s",
+ warning_message);
+ fprintf(stderr, PNG_STRING_NEWLINE);
+ }
+ }
+ else
+# endif
+ {
+ fprintf(stderr, "libpng warning: %s", warning_message);
+ fprintf(stderr, PNG_STRING_NEWLINE);
+ }
+#else
+ warning_message = warning_message; /* Make compiler happy */
+#endif
+ png_ptr = png_ptr; /* Make compiler happy */
+}
+#endif /* PNG_WARNINGS_SUPPORTED */
+
+/* This function is called when the application wants to use another method
+ * of handling errors and warnings. Note that the error function MUST NOT
+ * return to the calling routine or serious problems will occur. The return
+ * method used in the default routine calls longjmp(png_ptr->jmpbuf, 1)
+ */
+void PNGAPI
+png_set_error_fn(png_structp png_ptr, png_voidp error_ptr,
+ png_error_ptr error_fn, png_error_ptr warning_fn)
+{
+ if (png_ptr == NULL)
+ return;
+ png_ptr->error_ptr = error_ptr;
+ png_ptr->error_fn = error_fn;
+ png_ptr->warning_fn = warning_fn;
+}
+
+
+/* This function returns a pointer to the error_ptr associated with the user
+ * functions. The application should free any memory associated with this
+ * pointer before png_write_destroy and png_read_destroy are called.
+ */
+png_voidp PNGAPI
+png_get_error_ptr(png_structp png_ptr)
+{
+ if (png_ptr == NULL)
+ return NULL;
+ return ((png_voidp)png_ptr->error_ptr);
+}
+
+
+#ifdef PNG_ERROR_NUMBERS_SUPPORTED
+void PNGAPI
+png_set_strip_error_numbers(png_structp png_ptr, png_uint_32 strip_mode)
+{
+ if (png_ptr != NULL)
+ {
+ png_ptr->flags &=
+ ((~(PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT))&strip_mode);
+ }
+}
+#endif
+#endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */
diff --git a/src/3rdparty/libpng/pngget.c b/src/3rdparty/libpng/pngget.c
new file mode 100644
index 0000000..8611b85
--- /dev/null
+++ b/src/3rdparty/libpng/pngget.c
@@ -0,0 +1,919 @@
+
+/* pngget.c - retrieval of values from info struct
+ *
+ * Last changed in libpng 1.4.0 [January 3, 2010]
+ * Copyright (c) 1998-2010 Glenn Randers-Pehrson
+ * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
+ * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ *
+ */
+
+#define PNG_NO_PEDANTIC_WARNINGS
+#include "png.h"
+#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
+#include "pngpriv.h"
+
+png_uint_32 PNGAPI
+png_get_valid(png_structp png_ptr, png_infop info_ptr, png_uint_32 flag)
+{
+ if (png_ptr != NULL && info_ptr != NULL)
+ return(info_ptr->valid & flag);
+
+ else
+ return(0);
+}
+
+png_size_t PNGAPI
+png_get_rowbytes(png_structp png_ptr, png_infop info_ptr)
+{
+ if (png_ptr != NULL && info_ptr != NULL)
+ return(info_ptr->rowbytes);
+
+ else
+ return(0);
+}
+
+#ifdef PNG_INFO_IMAGE_SUPPORTED
+png_bytepp PNGAPI
+png_get_rows(png_structp png_ptr, png_infop info_ptr)
+{
+ if (png_ptr != NULL && info_ptr != NULL)
+ return(info_ptr->row_pointers);
+
+ else
+ return(0);
+}
+#endif
+
+#ifdef PNG_EASY_ACCESS_SUPPORTED
+/* Easy access to info, added in libpng-0.99 */
+png_uint_32 PNGAPI
+png_get_image_width(png_structp png_ptr, png_infop info_ptr)
+{
+ if (png_ptr != NULL && info_ptr != NULL)
+ return info_ptr->width;
+
+ return (0);
+}
+
+png_uint_32 PNGAPI
+png_get_image_height(png_structp png_ptr, png_infop info_ptr)
+{
+ if (png_ptr != NULL && info_ptr != NULL)
+ return info_ptr->height;
+
+ return (0);
+}
+
+png_byte PNGAPI
+png_get_bit_depth(png_structp png_ptr, png_infop info_ptr)
+{
+ if (png_ptr != NULL && info_ptr != NULL)
+ return info_ptr->bit_depth;
+
+ return (0);
+}
+
+png_byte PNGAPI
+png_get_color_type(png_structp png_ptr, png_infop info_ptr)
+{
+ if (png_ptr != NULL && info_ptr != NULL)
+ return info_ptr->color_type;
+
+ return (0);
+}
+
+png_byte PNGAPI
+png_get_filter_type(png_structp png_ptr, png_infop info_ptr)
+{
+ if (png_ptr != NULL && info_ptr != NULL)
+ return info_ptr->filter_type;
+
+ return (0);
+}
+
+png_byte PNGAPI
+png_get_interlace_type(png_structp png_ptr, png_infop info_ptr)
+{
+ if (png_ptr != NULL && info_ptr != NULL)
+ return info_ptr->interlace_type;
+
+ return (0);
+}
+
+png_byte PNGAPI
+png_get_compression_type(png_structp png_ptr, png_infop info_ptr)
+{
+ if (png_ptr != NULL && info_ptr != NULL)
+ return info_ptr->compression_type;
+
+ return (0);
+}
+
+png_uint_32 PNGAPI
+png_get_x_pixels_per_meter(png_structp png_ptr, png_infop info_ptr)
+{
+ if (png_ptr != NULL && info_ptr != NULL)
+#ifdef PNG_pHYs_SUPPORTED
+ if (info_ptr->valid & PNG_INFO_pHYs)
+ {
+ png_debug1(1, "in %s retrieval function", "png_get_x_pixels_per_meter");
+
+ if (info_ptr->phys_unit_type != PNG_RESOLUTION_METER)
+ return (0);
+
+ else
+ return (info_ptr->x_pixels_per_unit);
+ }
+#else
+ return (0);
+#endif
+ return (0);
+}
+
+png_uint_32 PNGAPI
+png_get_y_pixels_per_meter(png_structp png_ptr, png_infop info_ptr)
+{
+ if (png_ptr != NULL && info_ptr != NULL)
+#ifdef PNG_pHYs_SUPPORTED
+ if (info_ptr->valid & PNG_INFO_pHYs)
+ {
+ png_debug1(1, "in %s retrieval function", "png_get_y_pixels_per_meter");
+
+ if (info_ptr->phys_unit_type != PNG_RESOLUTION_METER)
+ return (0);
+
+ else
+ return (info_ptr->y_pixels_per_unit);
+ }
+#else
+ return (0);
+#endif
+ return (0);
+}
+
+png_uint_32 PNGAPI
+png_get_pixels_per_meter(png_structp png_ptr, png_infop info_ptr)
+{
+ if (png_ptr != NULL && info_ptr != NULL)
+#ifdef PNG_pHYs_SUPPORTED
+ if (info_ptr->valid & PNG_INFO_pHYs)
+ {
+ png_debug1(1, "in %s retrieval function", "png_get_pixels_per_meter");
+
+ if (info_ptr->phys_unit_type != PNG_RESOLUTION_METER ||
+ info_ptr->x_pixels_per_unit != info_ptr->y_pixels_per_unit)
+ return (0);
+
+ else
+ return (info_ptr->x_pixels_per_unit);
+ }
+#else
+ return (0);
+#endif
+ return (0);
+}
+
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+float PNGAPI
+png_get_pixel_aspect_ratio(png_structp png_ptr, png_infop info_ptr)
+ {
+ if (png_ptr != NULL && info_ptr != NULL)
+#ifdef PNG_pHYs_SUPPORTED
+
+ if (info_ptr->valid & PNG_INFO_pHYs)
+ {
+ png_debug1(1, "in %s retrieval function", "png_get_aspect_ratio");
+
+ if (info_ptr->x_pixels_per_unit == 0)
+ return ((float)0.0);
+
+ else
+ return ((float)((float)info_ptr->y_pixels_per_unit
+ /(float)info_ptr->x_pixels_per_unit));
+ }
+#else
+ return (0.0);
+#endif
+ return ((float)0.0);
+}
+#endif
+
+png_int_32 PNGAPI
+png_get_x_offset_microns(png_structp png_ptr, png_infop info_ptr)
+{
+ if (png_ptr != NULL && info_ptr != NULL)
+#ifdef PNG_oFFs_SUPPORTED
+
+ if (info_ptr->valid & PNG_INFO_oFFs)
+ {
+ png_debug1(1, "in %s retrieval function", "png_get_x_offset_microns");
+
+ if (info_ptr->offset_unit_type != PNG_OFFSET_MICROMETER)
+ return (0);
+
+ else
+ return (info_ptr->x_offset);
+ }
+#else
+ return (0);
+#endif
+ return (0);
+}
+
+png_int_32 PNGAPI
+png_get_y_offset_microns(png_structp png_ptr, png_infop info_ptr)
+{
+ if (png_ptr != NULL && info_ptr != NULL)
+
+#ifdef PNG_oFFs_SUPPORTED
+ if (info_ptr->valid & PNG_INFO_oFFs)
+ {
+ png_debug1(1, "in %s retrieval function", "png_get_y_offset_microns");
+
+ if (info_ptr->offset_unit_type != PNG_OFFSET_MICROMETER)
+ return (0);
+
+ else
+ return (info_ptr->y_offset);
+ }
+#else
+ return (0);
+#endif
+ return (0);
+}
+
+png_int_32 PNGAPI
+png_get_x_offset_pixels(png_structp png_ptr, png_infop info_ptr)
+{
+ if (png_ptr != NULL && info_ptr != NULL)
+
+#ifdef PNG_oFFs_SUPPORTED
+ if (info_ptr->valid & PNG_INFO_oFFs)
+ {
+ png_debug1(1, "in %s retrieval function", "png_get_x_offset_microns");
+
+ if (info_ptr->offset_unit_type != PNG_OFFSET_PIXEL)
+ return (0);
+
+ else
+ return (info_ptr->x_offset);
+ }
+#else
+ return (0);
+#endif
+ return (0);
+}
+
+png_int_32 PNGAPI
+png_get_y_offset_pixels(png_structp png_ptr, png_infop info_ptr)
+{
+ if (png_ptr != NULL && info_ptr != NULL)
+
+#ifdef PNG_oFFs_SUPPORTED
+ if (info_ptr->valid & PNG_INFO_oFFs)
+ {
+ png_debug1(1, "in %s retrieval function", "png_get_y_offset_microns");
+
+ if (info_ptr->offset_unit_type != PNG_OFFSET_PIXEL)
+ return (0);
+
+ else
+ return (info_ptr->y_offset);
+ }
+#else
+ return (0);
+#endif
+ return (0);
+}
+
+#if defined(PNG_INCH_CONVERSIONS) && defined(PNG_FLOATING_POINT_SUPPORTED)
+png_uint_32 PNGAPI
+png_get_pixels_per_inch(png_structp png_ptr, png_infop info_ptr)
+{
+ return ((png_uint_32)((float)png_get_pixels_per_meter(png_ptr, info_ptr)
+ *.0254 +.5));
+}
+
+png_uint_32 PNGAPI
+png_get_x_pixels_per_inch(png_structp png_ptr, png_infop info_ptr)
+{
+ return ((png_uint_32)((float)png_get_x_pixels_per_meter(png_ptr, info_ptr)
+ *.0254 +.5));
+}
+
+png_uint_32 PNGAPI
+png_get_y_pixels_per_inch(png_structp png_ptr, png_infop info_ptr)
+{
+ return ((png_uint_32)((float)png_get_y_pixels_per_meter(png_ptr, info_ptr)
+ *.0254 +.5));
+}
+
+float PNGAPI
+png_get_x_offset_inches(png_structp png_ptr, png_infop info_ptr)
+{
+ return ((float)png_get_x_offset_microns(png_ptr, info_ptr)
+ *.00003937);
+}
+
+float PNGAPI
+png_get_y_offset_inches(png_structp png_ptr, png_infop info_ptr)
+{
+ return ((float)png_get_y_offset_microns(png_ptr, info_ptr)
+ *.00003937);
+}
+
+#ifdef PNG_pHYs_SUPPORTED
+png_uint_32 PNGAPI
+png_get_pHYs_dpi(png_structp png_ptr, png_infop info_ptr,
+ png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type)
+{
+ png_uint_32 retval = 0;
+
+ if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs))
+ {
+ png_debug1(1, "in %s retrieval function", "pHYs");
+
+ if (res_x != NULL)
+ {
+ *res_x = info_ptr->x_pixels_per_unit;
+ retval |= PNG_INFO_pHYs;
+ }
+ if (res_y != NULL)
+ {
+ *res_y = info_ptr->y_pixels_per_unit;
+ retval |= PNG_INFO_pHYs;
+ }
+ if (unit_type != NULL)
+ {
+ *unit_type = (int)info_ptr->phys_unit_type;
+ retval |= PNG_INFO_pHYs;
+ if (*unit_type == 1)
+ {
+ if (res_x != NULL) *res_x = (png_uint_32)(*res_x * .0254 + .50);
+ if (res_y != NULL) *res_y = (png_uint_32)(*res_y * .0254 + .50);
+ }
+ }
+ }
+ return (retval);
+}
+#endif /* PNG_pHYs_SUPPORTED */
+#endif /* PNG_INCH_CONVERSIONS && PNG_FLOATING_POINT_SUPPORTED */
+
+/* png_get_channels really belongs in here, too, but it's been around longer */
+
+#endif /* PNG_EASY_ACCESS_SUPPORTED */
+
+png_byte PNGAPI
+png_get_channels(png_structp png_ptr, png_infop info_ptr)
+{
+ if (png_ptr != NULL && info_ptr != NULL)
+ return(info_ptr->channels);
+ else
+ return (0);
+}
+
+png_bytep PNGAPI
+png_get_signature(png_structp png_ptr, png_infop info_ptr)
+{
+ if (png_ptr != NULL && info_ptr != NULL)
+ return(info_ptr->signature);
+ else
+ return (NULL);
+}
+
+#ifdef PNG_bKGD_SUPPORTED
+png_uint_32 PNGAPI
+png_get_bKGD(png_structp png_ptr, png_infop info_ptr,
+ png_color_16p *background)
+{
+ if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_bKGD)
+ && background != NULL)
+ {
+ png_debug1(1, "in %s retrieval function", "bKGD");
+
+ *background = &(info_ptr->background);
+ return (PNG_INFO_bKGD);
+ }
+ return (0);
+}
+#endif
+
+#ifdef PNG_cHRM_SUPPORTED
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+png_uint_32 PNGAPI
+png_get_cHRM(png_structp png_ptr, png_infop info_ptr,
+ double *white_x, double *white_y, double *red_x, double *red_y,
+ double *green_x, double *green_y, double *blue_x, double *blue_y)
+{
+ if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_cHRM))
+ {
+ png_debug1(1, "in %s retrieval function", "cHRM");
+
+ if (white_x != NULL)
+ *white_x = (double)info_ptr->x_white;
+ if (white_y != NULL)
+ *white_y = (double)info_ptr->y_white;
+ if (red_x != NULL)
+ *red_x = (double)info_ptr->x_red;
+ if (red_y != NULL)
+ *red_y = (double)info_ptr->y_red;
+ if (green_x != NULL)
+ *green_x = (double)info_ptr->x_green;
+ if (green_y != NULL)
+ *green_y = (double)info_ptr->y_green;
+ if (blue_x != NULL)
+ *blue_x = (double)info_ptr->x_blue;
+ if (blue_y != NULL)
+ *blue_y = (double)info_ptr->y_blue;
+ return (PNG_INFO_cHRM);
+ }
+ return (0);
+}
+#endif
+#ifdef PNG_FIXED_POINT_SUPPORTED
+png_uint_32 PNGAPI
+png_get_cHRM_fixed(png_structp png_ptr, png_infop info_ptr,
+ png_fixed_point *white_x, png_fixed_point *white_y, png_fixed_point *red_x,
+ png_fixed_point *red_y, png_fixed_point *green_x, png_fixed_point *green_y,
+ png_fixed_point *blue_x, png_fixed_point *blue_y)
+{
+ png_debug1(1, "in %s retrieval function", "cHRM");
+
+ if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_cHRM))
+ {
+ if (white_x != NULL)
+ *white_x = info_ptr->int_x_white;
+ if (white_y != NULL)
+ *white_y = info_ptr->int_y_white;
+ if (red_x != NULL)
+ *red_x = info_ptr->int_x_red;
+ if (red_y != NULL)
+ *red_y = info_ptr->int_y_red;
+ if (green_x != NULL)
+ *green_x = info_ptr->int_x_green;
+ if (green_y != NULL)
+ *green_y = info_ptr->int_y_green;
+ if (blue_x != NULL)
+ *blue_x = info_ptr->int_x_blue;
+ if (blue_y != NULL)
+ *blue_y = info_ptr->int_y_blue;
+ return (PNG_INFO_cHRM);
+ }
+ return (0);
+}
+#endif
+#endif
+
+#ifdef PNG_gAMA_SUPPORTED
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+png_uint_32 PNGAPI
+png_get_gAMA(png_structp png_ptr, png_infop info_ptr, double *file_gamma)
+{
+ png_debug1(1, "in %s retrieval function", "gAMA");
+
+ if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_gAMA)
+ && file_gamma != NULL)
+ {
+ *file_gamma = (double)info_ptr->gamma;
+ return (PNG_INFO_gAMA);
+ }
+ return (0);
+}
+#endif
+#ifdef PNG_FIXED_POINT_SUPPORTED
+png_uint_32 PNGAPI
+png_get_gAMA_fixed(png_structp png_ptr, png_infop info_ptr,
+ png_fixed_point *int_file_gamma)
+{
+ png_debug1(1, "in %s retrieval function", "gAMA");
+
+ if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_gAMA)
+ && int_file_gamma != NULL)
+ {
+ *int_file_gamma = info_ptr->int_gamma;
+ return (PNG_INFO_gAMA);
+ }
+ return (0);
+}
+#endif
+#endif
+
+#ifdef PNG_sRGB_SUPPORTED
+png_uint_32 PNGAPI
+png_get_sRGB(png_structp png_ptr, png_infop info_ptr, int *file_srgb_intent)
+{
+ png_debug1(1, "in %s retrieval function", "sRGB");
+
+ if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_sRGB)
+ && file_srgb_intent != NULL)
+ {
+ *file_srgb_intent = (int)info_ptr->srgb_intent;
+ return (PNG_INFO_sRGB);
+ }
+ return (0);
+}
+#endif
+
+#ifdef PNG_iCCP_SUPPORTED
+png_uint_32 PNGAPI
+png_get_iCCP(png_structp png_ptr, png_infop info_ptr,
+ png_charpp name, int *compression_type,
+ png_charpp profile, png_uint_32 *proflen)
+{
+ png_debug1(1, "in %s retrieval function", "iCCP");
+
+ if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_iCCP)
+ && name != NULL && profile != NULL && proflen != NULL)
+ {
+ *name = info_ptr->iccp_name;
+ *profile = info_ptr->iccp_profile;
+ /* Compression_type is a dummy so the API won't have to change
+ * if we introduce multiple compression types later.
+ */
+ *proflen = (int)info_ptr->iccp_proflen;
+ *compression_type = (int)info_ptr->iccp_compression;
+ return (PNG_INFO_iCCP);
+ }
+ return (0);
+}
+#endif
+
+#ifdef PNG_sPLT_SUPPORTED
+png_uint_32 PNGAPI
+png_get_sPLT(png_structp png_ptr, png_infop info_ptr,
+ png_sPLT_tpp spalettes)
+{
+ if (png_ptr != NULL && info_ptr != NULL && spalettes != NULL)
+ {
+ *spalettes = info_ptr->splt_palettes;
+ return ((png_uint_32)info_ptr->splt_palettes_num);
+ }
+ return (0);
+}
+#endif
+
+#ifdef PNG_hIST_SUPPORTED
+png_uint_32 PNGAPI
+png_get_hIST(png_structp png_ptr, png_infop info_ptr, png_uint_16p *hist)
+{
+ png_debug1(1, "in %s retrieval function", "hIST");
+
+ if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_hIST)
+ && hist != NULL)
+ {
+ *hist = info_ptr->hist;
+ return (PNG_INFO_hIST);
+ }
+ return (0);
+}
+#endif
+
+png_uint_32 PNGAPI
+png_get_IHDR(png_structp png_ptr, png_infop info_ptr,
+ png_uint_32 *width, png_uint_32 *height, int *bit_depth,
+ int *color_type, int *interlace_type, int *compression_type,
+ int *filter_type)
+
+{
+ png_debug1(1, "in %s retrieval function", "IHDR");
+
+ if (png_ptr == NULL || info_ptr == NULL || width == NULL ||
+ height == NULL || bit_depth == NULL || color_type == NULL)
+ return (0);
+
+ *width = info_ptr->width;
+ *height = info_ptr->height;
+ *bit_depth = info_ptr->bit_depth;
+ *color_type = info_ptr->color_type;
+
+ if (compression_type != NULL)
+ *compression_type = info_ptr->compression_type;
+
+ if (filter_type != NULL)
+ *filter_type = info_ptr->filter_type;
+
+ if (interlace_type != NULL)
+ *interlace_type = info_ptr->interlace_type;
+
+ /* This is redundant if we can be sure that the info_ptr values were all
+ * assigned in png_set_IHDR(). We do the check anyhow in case an
+ * application has ignored our advice not to mess with the members
+ * of info_ptr directly.
+ */
+ png_check_IHDR (png_ptr, info_ptr->width, info_ptr->height,
+ info_ptr->bit_depth, info_ptr->color_type, info_ptr->interlace_type,
+ info_ptr->compression_type, info_ptr->filter_type);
+
+ return (1);
+}
+
+#ifdef PNG_oFFs_SUPPORTED
+png_uint_32 PNGAPI
+png_get_oFFs(png_structp png_ptr, png_infop info_ptr,
+ png_int_32 *offset_x, png_int_32 *offset_y, int *unit_type)
+{
+ png_debug1(1, "in %s retrieval function", "oFFs");
+
+ if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_oFFs)
+ && offset_x != NULL && offset_y != NULL && unit_type != NULL)
+ {
+ *offset_x = info_ptr->x_offset;
+ *offset_y = info_ptr->y_offset;
+ *unit_type = (int)info_ptr->offset_unit_type;
+ return (PNG_INFO_oFFs);
+ }
+ return (0);
+}
+#endif
+
+#ifdef PNG_pCAL_SUPPORTED
+png_uint_32 PNGAPI
+png_get_pCAL(png_structp png_ptr, png_infop info_ptr,
+ png_charp *purpose, png_int_32 *X0, png_int_32 *X1, int *type, int *nparams,
+ png_charp *units, png_charpp *params)
+{
+ png_debug1(1, "in %s retrieval function", "pCAL");
+
+ if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pCAL)
+ && purpose != NULL && X0 != NULL && X1 != NULL && type != NULL &&
+ nparams != NULL && units != NULL && params != NULL)
+ {
+ *purpose = info_ptr->pcal_purpose;
+ *X0 = info_ptr->pcal_X0;
+ *X1 = info_ptr->pcal_X1;
+ *type = (int)info_ptr->pcal_type;
+ *nparams = (int)info_ptr->pcal_nparams;
+ *units = info_ptr->pcal_units;
+ *params = info_ptr->pcal_params;
+ return (PNG_INFO_pCAL);
+ }
+ return (0);
+}
+#endif
+
+#ifdef PNG_sCAL_SUPPORTED
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+png_uint_32 PNGAPI
+png_get_sCAL(png_structp png_ptr, png_infop info_ptr,
+ int *unit, double *width, double *height)
+{
+ if (png_ptr != NULL && info_ptr != NULL &&
+ (info_ptr->valid & PNG_INFO_sCAL))
+ {
+ *unit = info_ptr->scal_unit;
+ *width = info_ptr->scal_pixel_width;
+ *height = info_ptr->scal_pixel_height;
+ return (PNG_INFO_sCAL);
+ }
+ return(0);
+}
+#else
+#ifdef PNG_FIXED_POINT_SUPPORTED
+png_uint_32 PNGAPI
+png_get_sCAL_s(png_structp png_ptr, png_infop info_ptr,
+ int *unit, png_charpp width, png_charpp height)
+{
+ if (png_ptr != NULL && info_ptr != NULL &&
+ (info_ptr->valid & PNG_INFO_sCAL))
+ {
+ *unit = info_ptr->scal_unit;
+ *width = info_ptr->scal_s_width;
+ *height = info_ptr->scal_s_height;
+ return (PNG_INFO_sCAL);
+ }
+ return(0);
+}
+#endif
+#endif
+#endif
+
+#ifdef PNG_pHYs_SUPPORTED
+png_uint_32 PNGAPI
+png_get_pHYs(png_structp png_ptr, png_infop info_ptr,
+ png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type)
+{
+ png_uint_32 retval = 0;
+
+ png_debug1(1, "in %s retrieval function", "pHYs");
+
+ if (png_ptr != NULL && info_ptr != NULL &&
+ (info_ptr->valid & PNG_INFO_pHYs))
+ {
+ if (res_x != NULL)
+ {
+ *res_x = info_ptr->x_pixels_per_unit;
+ retval |= PNG_INFO_pHYs;
+ }
+
+ if (res_y != NULL)
+ {
+ *res_y = info_ptr->y_pixels_per_unit;
+ retval |= PNG_INFO_pHYs;
+ }
+
+ if (unit_type != NULL)
+ {
+ *unit_type = (int)info_ptr->phys_unit_type;
+ retval |= PNG_INFO_pHYs;
+ }
+ }
+ return (retval);
+}
+#endif
+
+png_uint_32 PNGAPI
+png_get_PLTE(png_structp png_ptr, png_infop info_ptr, png_colorp *palette,
+ int *num_palette)
+{
+ png_debug1(1, "in %s retrieval function", "PLTE");
+
+ if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_PLTE)
+ && palette != NULL)
+ {
+ *palette = info_ptr->palette;
+ *num_palette = info_ptr->num_palette;
+ png_debug1(3, "num_palette = %d", *num_palette);
+ return (PNG_INFO_PLTE);
+ }
+ return (0);
+}
+
+#ifdef PNG_sBIT_SUPPORTED
+png_uint_32 PNGAPI
+png_get_sBIT(png_structp png_ptr, png_infop info_ptr, png_color_8p *sig_bit)
+{
+ png_debug1(1, "in %s retrieval function", "sBIT");
+
+ if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_sBIT)
+ && sig_bit != NULL)
+ {
+ *sig_bit = &(info_ptr->sig_bit);
+ return (PNG_INFO_sBIT);
+ }
+ return (0);
+}
+#endif
+
+#ifdef PNG_TEXT_SUPPORTED
+png_uint_32 PNGAPI
+png_get_text(png_structp png_ptr, png_infop info_ptr, png_textp *text_ptr,
+ int *num_text)
+{
+ if (png_ptr != NULL && info_ptr != NULL && info_ptr->num_text > 0)
+ {
+ png_debug1(1, "in %s retrieval function",
+ (png_ptr->chunk_name[0] == '\0' ? "text"
+ : (png_const_charp)png_ptr->chunk_name));
+
+ if (text_ptr != NULL)
+ *text_ptr = info_ptr->text;
+
+ if (num_text != NULL)
+ *num_text = info_ptr->num_text;
+
+ return ((png_uint_32)info_ptr->num_text);
+ }
+ if (num_text != NULL)
+ *num_text = 0;
+ return(0);
+}
+#endif
+
+#ifdef PNG_tIME_SUPPORTED
+png_uint_32 PNGAPI
+png_get_tIME(png_structp png_ptr, png_infop info_ptr, png_timep *mod_time)
+{
+ png_debug1(1, "in %s retrieval function", "tIME");
+
+ if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_tIME)
+ && mod_time != NULL)
+ {
+ *mod_time = &(info_ptr->mod_time);
+ return (PNG_INFO_tIME);
+ }
+ return (0);
+}
+#endif
+
+#ifdef PNG_tRNS_SUPPORTED
+png_uint_32 PNGAPI
+png_get_tRNS(png_structp png_ptr, png_infop info_ptr,
+ png_bytep *trans_alpha, int *num_trans, png_color_16p *trans_color)
+{
+ png_uint_32 retval = 0;
+ if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_tRNS))
+ {
+ png_debug1(1, "in %s retrieval function", "tRNS");
+
+ if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
+ {
+ if (trans_alpha != NULL)
+ {
+ *trans_alpha = info_ptr->trans_alpha;
+ retval |= PNG_INFO_tRNS;
+ }
+
+ if (trans_color != NULL)
+ *trans_color = &(info_ptr->trans_color);
+ }
+ else /* if (info_ptr->color_type != PNG_COLOR_TYPE_PALETTE) */
+ {
+ if (trans_color != NULL)
+ {
+ *trans_color = &(info_ptr->trans_color);
+ retval |= PNG_INFO_tRNS;
+ }
+
+ if (trans_alpha != NULL)
+ *trans_alpha = NULL;
+ }
+ if (num_trans != NULL)
+ {
+ *num_trans = info_ptr->num_trans;
+ retval |= PNG_INFO_tRNS;
+ }
+ }
+ return (retval);
+}
+#endif
+
+#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
+png_uint_32 PNGAPI
+png_get_unknown_chunks(png_structp png_ptr, png_infop info_ptr,
+ png_unknown_chunkpp unknowns)
+{
+ if (png_ptr != NULL && info_ptr != NULL && unknowns != NULL)
+ {
+ *unknowns = info_ptr->unknown_chunks;
+ return ((png_uint_32)info_ptr->unknown_chunks_num);
+ }
+ return (0);
+}
+#endif
+
+#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
+png_byte PNGAPI
+png_get_rgb_to_gray_status (png_structp png_ptr)
+{
+ return (png_byte)(png_ptr? png_ptr->rgb_to_gray_status : 0);
+}
+#endif
+
+#ifdef PNG_USER_CHUNKS_SUPPORTED
+png_voidp PNGAPI
+png_get_user_chunk_ptr(png_structp png_ptr)
+{
+ return (png_ptr? png_ptr->user_chunk_ptr : NULL);
+}
+#endif
+
+#ifdef PNG_WRITE_SUPPORTED
+png_size_t PNGAPI
+png_get_compression_buffer_size(png_structp png_ptr)
+{
+ return (png_ptr ? png_ptr->zbuf_size : 0L);
+}
+#endif
+
+
+#ifdef PNG_SET_USER_LIMITS_SUPPORTED
+/* These functions were added to libpng 1.2.6 */
+png_uint_32 PNGAPI
+png_get_user_width_max (png_structp png_ptr)
+{
+ return (png_ptr? png_ptr->user_width_max : 0);
+}
+png_uint_32 PNGAPI
+png_get_user_height_max (png_structp png_ptr)
+{
+ return (png_ptr? png_ptr->user_height_max : 0);
+}
+/* This function was added to libpng 1.4.0 */
+png_uint_32 PNGAPI
+png_get_chunk_cache_max (png_structp png_ptr)
+{
+ return (png_ptr? png_ptr->user_chunk_cache_max? 0x7fffffffL :
+ png_ptr->user_chunk_cache_max - 1 : 0);
+}
+#endif /* ?PNG_SET_USER_LIMITS_SUPPORTED */
+
+#ifdef PNG_IO_STATE_SUPPORTED
+png_uint_32 PNGAPI
+png_get_io_state (png_structp png_ptr)
+{
+ return png_ptr->io_state;
+}
+
+png_bytep PNGAPI
+png_get_io_chunk_name (png_structp png_ptr)
+{
+ return png_ptr->chunk_name;
+}
+#endif /* ?PNG_IO_STATE_SUPPORTED */
+
+#endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */
diff --git a/src/3rdparty/libpng/pngmem.c b/src/3rdparty/libpng/pngmem.c
new file mode 100644
index 0000000..dee2966
--- /dev/null
+++ b/src/3rdparty/libpng/pngmem.c
@@ -0,0 +1,611 @@
+
+/* pngmem.c - stub functions for memory allocation
+ *
+ * Last changed in libpng 1.4.0 [January 3, 2010]
+ * Copyright (c) 1998-2010 Glenn Randers-Pehrson
+ * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
+ * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ *
+ * This file provides a location for all memory allocation. Users who
+ * need special memory handling are expected to supply replacement
+ * functions for png_malloc() and png_free(), and to use
+ * png_create_read_struct_2() and png_create_write_struct_2() to
+ * identify the replacement functions.
+ */
+
+#define PNG_NO_PEDANTIC_WARNINGS
+#include "png.h"
+#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
+#include "pngpriv.h"
+
+/* Borland DOS special memory handler */
+#if defined(__TURBOC__) && !defined(_Windows) && !defined(__FLAT__)
+/* If you change this, be sure to change the one in png.h also */
+
+/* Allocate memory for a png_struct. The malloc and memset can be replaced
+ by a single call to calloc() if this is thought to improve performance. */
+png_voidp /* PRIVATE */
+png_create_struct(int type)
+{
+#ifdef PNG_USER_MEM_SUPPORTED
+ return (png_create_struct_2(type, NULL, NULL));
+}
+
+/* Alternate version of png_create_struct, for use with user-defined malloc. */
+png_voidp /* PRIVATE */
+png_create_struct_2(int type, png_malloc_ptr malloc_fn, png_voidp mem_ptr)
+{
+#endif /* PNG_USER_MEM_SUPPORTED */
+ png_size_t size;
+ png_voidp struct_ptr;
+
+ if (type == PNG_STRUCT_INFO)
+ size = png_sizeof(png_info);
+ else if (type == PNG_STRUCT_PNG)
+ size = png_sizeof(png_struct);
+ else
+ return (png_get_copyright(NULL));
+
+#ifdef PNG_USER_MEM_SUPPORTED
+ if (malloc_fn != NULL)
+ {
+ png_struct dummy_struct;
+ png_structp png_ptr = &dummy_struct;
+ png_ptr->mem_ptr=mem_ptr;
+ struct_ptr = (*(malloc_fn))(png_ptr, (png_uint_32)size);
+ }
+ else
+#endif /* PNG_USER_MEM_SUPPORTED */
+ struct_ptr = (png_voidp)farmalloc(size);
+ if (struct_ptr != NULL)
+ png_memset(struct_ptr, 0, size);
+ return (struct_ptr);
+}
+
+/* Free memory allocated by a png_create_struct() call */
+void /* PRIVATE */
+png_destroy_struct(png_voidp struct_ptr)
+{
+#ifdef PNG_USER_MEM_SUPPORTED
+ png_destroy_struct_2(struct_ptr, NULL, NULL);
+}
+
+/* Free memory allocated by a png_create_struct() call */
+void /* PRIVATE */
+png_destroy_struct_2(png_voidp struct_ptr, png_free_ptr free_fn,
+ png_voidp mem_ptr)
+{
+#endif
+ if (struct_ptr != NULL)
+ {
+#ifdef PNG_USER_MEM_SUPPORTED
+ if (free_fn != NULL)
+ {
+ png_struct dummy_struct;
+ png_structp png_ptr = &dummy_struct;
+ png_ptr->mem_ptr=mem_ptr;
+ (*(free_fn))(png_ptr, struct_ptr);
+ return;
+ }
+#endif /* PNG_USER_MEM_SUPPORTED */
+ farfree (struct_ptr);
+ }
+}
+
+/* Allocate memory. For reasonable files, size should never exceed
+ * 64K. However, zlib may allocate more then 64K if you don't tell
+ * it not to. See zconf.h and png.h for more information. zlib does
+ * need to allocate exactly 64K, so whatever you call here must
+ * have the ability to do that.
+ *
+ * Borland seems to have a problem in DOS mode for exactly 64K.
+ * It gives you a segment with an offset of 8 (perhaps to store its
+ * memory stuff). zlib doesn't like this at all, so we have to
+ * detect and deal with it. This code should not be needed in
+ * Windows or OS/2 modes, and only in 16 bit mode. This code has
+ * been updated by Alexander Lehmann for version 0.89 to waste less
+ * memory.
+ *
+ * Note that we can't use png_size_t for the "size" declaration,
+ * since on some systems a png_size_t is a 16-bit quantity, and as a
+ * result, we would be truncating potentially larger memory requests
+ * (which should cause a fatal error) and introducing major problems.
+ */
+png_voidp PNGAPI
+png_calloc(png_structp png_ptr, png_alloc_size_t size)
+{
+ png_voidp ret;
+
+ ret = (png_malloc(png_ptr, size));
+ if (ret != NULL)
+ png_memset(ret,0,(png_size_t)size);
+ return (ret);
+}
+
+png_voidp PNGAPI
+png_malloc(png_structp png_ptr, png_alloc_size_t size)
+{
+ png_voidp ret;
+
+ if (png_ptr == NULL || size == 0)
+ return (NULL);
+
+#ifdef PNG_USER_MEM_SUPPORTED
+ if (png_ptr->malloc_fn != NULL)
+ ret = ((png_voidp)(*(png_ptr->malloc_fn))(png_ptr, (png_size_t)size));
+ else
+ ret = (png_malloc_default(png_ptr, size));
+ if (ret == NULL && (png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
+ png_error(png_ptr, "Out of memory");
+ return (ret);
+}
+
+png_voidp PNGAPI
+png_malloc_default(png_structp png_ptr, png_alloc_size_t size)
+{
+ png_voidp ret;
+#endif /* PNG_USER_MEM_SUPPORTED */
+
+ if (png_ptr == NULL || size == 0)
+ return (NULL);
+
+#ifdef PNG_MAX_MALLOC_64K
+ if (size > (png_uint_32)65536L)
+ {
+ png_warning(png_ptr, "Cannot Allocate > 64K");
+ ret = NULL;
+ }
+ else
+#endif
+
+ if (size != (size_t)size)
+ ret = NULL;
+ else if (size == (png_uint_32)65536L)
+ {
+ if (png_ptr->offset_table == NULL)
+ {
+ /* Try to see if we need to do any of this fancy stuff */
+ ret = farmalloc(size);
+ if (ret == NULL || ((png_size_t)ret & 0xffff))
+ {
+ int num_blocks;
+ png_uint_32 total_size;
+ png_bytep table;
+ int i;
+ png_byte huge * hptr;
+
+ if (ret != NULL)
+ {
+ farfree(ret);
+ ret = NULL;
+ }
+
+ if (png_ptr->zlib_window_bits > 14)
+ num_blocks = (int)(1 << (png_ptr->zlib_window_bits - 14));
+ else
+ num_blocks = 1;
+ if (png_ptr->zlib_mem_level >= 7)
+ num_blocks += (int)(1 << (png_ptr->zlib_mem_level - 7));
+ else
+ num_blocks++;
+
+ total_size = ((png_uint_32)65536L) * (png_uint_32)num_blocks+16;
+
+ table = farmalloc(total_size);
+
+ if (table == NULL)
+ {
+#ifndef PNG_USER_MEM_SUPPORTED
+ if ((png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
+ png_error(png_ptr, "Out Of Memory"); /* Note "O" and "M" */
+ else
+ png_warning(png_ptr, "Out Of Memory");
+#endif
+ return (NULL);
+ }
+
+ if ((png_size_t)table & 0xfff0)
+ {
+#ifndef PNG_USER_MEM_SUPPORTED
+ if ((png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
+ png_error(png_ptr,
+ "Farmalloc didn't return normalized pointer");
+ else
+ png_warning(png_ptr,
+ "Farmalloc didn't return normalized pointer");
+#endif
+ return (NULL);
+ }
+
+ png_ptr->offset_table = table;
+ png_ptr->offset_table_ptr = farmalloc(num_blocks *
+ png_sizeof(png_bytep));
+
+ if (png_ptr->offset_table_ptr == NULL)
+ {
+#ifndef PNG_USER_MEM_SUPPORTED
+ if ((png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
+ png_error(png_ptr, "Out Of memory"); /* Note "O" and "M" */
+ else
+ png_warning(png_ptr, "Out Of memory");
+#endif
+ return (NULL);
+ }
+
+ hptr = (png_byte huge *)table;
+ if ((png_size_t)hptr & 0xf)
+ {
+ hptr = (png_byte huge *)((long)(hptr) & 0xfffffff0L);
+ hptr = hptr + 16L; /* "hptr += 16L" fails on Turbo C++ 3.0 */
+ }
+ for (i = 0; i < num_blocks; i++)
+ {
+ png_ptr->offset_table_ptr[i] = (png_bytep)hptr;
+ hptr = hptr + (png_uint_32)65536L; /* "+=" fails on TC++3.0 */
+ }
+
+ png_ptr->offset_table_number = num_blocks;
+ png_ptr->offset_table_count = 0;
+ png_ptr->offset_table_count_free = 0;
+ }
+ }
+
+ if (png_ptr->offset_table_count >= png_ptr->offset_table_number)
+ {
+#ifndef PNG_USER_MEM_SUPPORTED
+ if ((png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
+ png_error(png_ptr, "Out of Memory"); /* Note "o" and "M" */
+ else
+ png_warning(png_ptr, "Out of Memory");
+#endif
+ return (NULL);
+ }
+
+ ret = png_ptr->offset_table_ptr[png_ptr->offset_table_count++];
+ }
+ else
+ ret = farmalloc(size);
+
+#ifndef PNG_USER_MEM_SUPPORTED
+ if (ret == NULL)
+ {
+ if ((png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
+ png_error(png_ptr, "Out of memory"); /* Note "o" and "m" */
+ else
+ png_warning(png_ptr, "Out of memory"); /* Note "o" and "m" */
+ }
+#endif
+
+ return (ret);
+}
+
+/* Free a pointer allocated by png_malloc(). In the default
+ * configuration, png_ptr is not used, but is passed in case it
+ * is needed. If ptr is NULL, return without taking any action.
+ */
+void PNGAPI
+png_free(png_structp png_ptr, png_voidp ptr)
+{
+ if (png_ptr == NULL || ptr == NULL)
+ return;
+
+#ifdef PNG_USER_MEM_SUPPORTED
+ if (png_ptr->free_fn != NULL)
+ {
+ (*(png_ptr->free_fn))(png_ptr, ptr);
+ return;
+ }
+ else
+ png_free_default(png_ptr, ptr);
+}
+
+void PNGAPI
+png_free_default(png_structp png_ptr, png_voidp ptr)
+{
+#endif /* PNG_USER_MEM_SUPPORTED */
+
+ if (png_ptr == NULL || ptr == NULL)
+ return;
+
+ if (png_ptr->offset_table != NULL)
+ {
+ int i;
+
+ for (i = 0; i < png_ptr->offset_table_count; i++)
+ {
+ if (ptr == png_ptr->offset_table_ptr[i])
+ {
+ ptr = NULL;
+ png_ptr->offset_table_count_free++;
+ break;
+ }
+ }
+ if (png_ptr->offset_table_count_free == png_ptr->offset_table_count)
+ {
+ farfree(png_ptr->offset_table);
+ farfree(png_ptr->offset_table_ptr);
+ png_ptr->offset_table = NULL;
+ png_ptr->offset_table_ptr = NULL;
+ }
+ }
+
+ if (ptr != NULL)
+ {
+ farfree(ptr);
+ }
+}
+
+#else /* Not the Borland DOS special memory handler */
+
+/* Allocate memory for a png_struct or a png_info. The malloc and
+ memset can be replaced by a single call to calloc() if this is thought
+ to improve performance noticably. */
+png_voidp /* PRIVATE */
+png_create_struct(int type)
+{
+#ifdef PNG_USER_MEM_SUPPORTED
+ return (png_create_struct_2(type, NULL, NULL));
+}
+
+/* Allocate memory for a png_struct or a png_info. The malloc and
+ memset can be replaced by a single call to calloc() if this is thought
+ to improve performance noticably. */
+png_voidp /* PRIVATE */
+png_create_struct_2(int type, png_malloc_ptr malloc_fn, png_voidp mem_ptr)
+{
+#endif /* PNG_USER_MEM_SUPPORTED */
+ png_size_t size;
+ png_voidp struct_ptr;
+
+ if (type == PNG_STRUCT_INFO)
+ size = png_sizeof(png_info);
+ else if (type == PNG_STRUCT_PNG)
+ size = png_sizeof(png_struct);
+ else
+ return (NULL);
+
+#ifdef PNG_USER_MEM_SUPPORTED
+ if (malloc_fn != NULL)
+ {
+ png_struct dummy_struct;
+ png_structp png_ptr = &dummy_struct;
+ png_ptr->mem_ptr=mem_ptr;
+ struct_ptr = (*(malloc_fn))(png_ptr, size);
+ if (struct_ptr != NULL)
+ png_memset(struct_ptr, 0, size);
+ return (struct_ptr);
+ }
+#endif /* PNG_USER_MEM_SUPPORTED */
+
+#if defined(__TURBOC__) && !defined(__FLAT__)
+ struct_ptr = (png_voidp)farmalloc(size);
+#else
+# if defined(_MSC_VER) && defined(MAXSEG_64K)
+ struct_ptr = (png_voidp)halloc(size, 1);
+# else
+ struct_ptr = (png_voidp)malloc(size);
+# endif
+#endif
+ if (struct_ptr != NULL)
+ png_memset(struct_ptr, 0, size);
+
+ return (struct_ptr);
+}
+
+
+/* Free memory allocated by a png_create_struct() call */
+void /* PRIVATE */
+png_destroy_struct(png_voidp struct_ptr)
+{
+#ifdef PNG_USER_MEM_SUPPORTED
+ png_destroy_struct_2(struct_ptr, NULL, NULL);
+}
+
+/* Free memory allocated by a png_create_struct() call */
+void /* PRIVATE */
+png_destroy_struct_2(png_voidp struct_ptr, png_free_ptr free_fn,
+ png_voidp mem_ptr)
+{
+#endif /* PNG_USER_MEM_SUPPORTED */
+ if (struct_ptr != NULL)
+ {
+#ifdef PNG_USER_MEM_SUPPORTED
+ if (free_fn != NULL)
+ {
+ png_struct dummy_struct;
+ png_structp png_ptr = &dummy_struct;
+ png_ptr->mem_ptr=mem_ptr;
+ (*(free_fn))(png_ptr, struct_ptr);
+ return;
+ }
+#endif /* PNG_USER_MEM_SUPPORTED */
+#if defined(__TURBOC__) && !defined(__FLAT__)
+ farfree(struct_ptr);
+#else
+# if defined(_MSC_VER) && defined(MAXSEG_64K)
+ hfree(struct_ptr);
+# else
+ free(struct_ptr);
+# endif
+#endif
+ }
+}
+
+/* Allocate memory. For reasonable files, size should never exceed
+ * 64K. However, zlib may allocate more then 64K if you don't tell
+ * it not to. See zconf.h and png.h for more information. zlib does
+ * need to allocate exactly 64K, so whatever you call here must
+ * have the ability to do that.
+ */
+
+png_voidp PNGAPI
+png_calloc(png_structp png_ptr, png_alloc_size_t size)
+{
+ png_voidp ret;
+
+ ret = (png_malloc(png_ptr, size));
+ if (ret != NULL)
+ png_memset(ret,0,(png_size_t)size);
+ return (ret);
+}
+
+png_voidp PNGAPI
+png_malloc(png_structp png_ptr, png_alloc_size_t size)
+{
+ png_voidp ret;
+
+#ifdef PNG_USER_MEM_SUPPORTED
+ if (png_ptr == NULL || size == 0)
+ return (NULL);
+
+ if (png_ptr->malloc_fn != NULL)
+ ret = ((png_voidp)(*(png_ptr->malloc_fn))(png_ptr, (png_size_t)size));
+ else
+ ret = (png_malloc_default(png_ptr, size));
+ if (ret == NULL && (png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
+ png_error(png_ptr, "Out of Memory");
+ return (ret);
+}
+
+png_voidp PNGAPI
+png_malloc_default(png_structp png_ptr, png_alloc_size_t size)
+{
+ png_voidp ret;
+#endif /* PNG_USER_MEM_SUPPORTED */
+
+ if (png_ptr == NULL || size == 0)
+ return (NULL);
+
+#ifdef PNG_MAX_MALLOC_64K
+ if (size > (png_uint_32)65536L)
+ {
+#ifndef PNG_USER_MEM_SUPPORTED
+ if ((png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
+ png_error(png_ptr, "Cannot Allocate > 64K");
+ else
+#endif
+ return NULL;
+ }
+#endif
+
+ /* Check for overflow */
+#if defined(__TURBOC__) && !defined(__FLAT__)
+ if (size != (unsigned long)size)
+ ret = NULL;
+ else
+ ret = farmalloc(size);
+#else
+# if defined(_MSC_VER) && defined(MAXSEG_64K)
+ if (size != (unsigned long)size)
+ ret = NULL;
+ else
+ ret = halloc(size, 1);
+# else
+ if (size != (size_t)size)
+ ret = NULL;
+ else
+ ret = malloc((size_t)size);
+# endif
+#endif
+
+#ifndef PNG_USER_MEM_SUPPORTED
+ if (ret == NULL && (png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
+ png_error(png_ptr, "Out of Memory");
+#endif
+
+ return (ret);
+}
+
+/* Free a pointer allocated by png_malloc(). If ptr is NULL, return
+ * without taking any action.
+ */
+void PNGAPI
+png_free(png_structp png_ptr, png_voidp ptr)
+{
+ if (png_ptr == NULL || ptr == NULL)
+ return;
+
+#ifdef PNG_USER_MEM_SUPPORTED
+ if (png_ptr->free_fn != NULL)
+ {
+ (*(png_ptr->free_fn))(png_ptr, ptr);
+ return;
+ }
+ else
+ png_free_default(png_ptr, ptr);
+}
+void PNGAPI
+png_free_default(png_structp png_ptr, png_voidp ptr)
+{
+ if (png_ptr == NULL || ptr == NULL)
+ return;
+
+#endif /* PNG_USER_MEM_SUPPORTED */
+
+#if defined(__TURBOC__) && !defined(__FLAT__)
+ farfree(ptr);
+#else
+# if defined(_MSC_VER) && defined(MAXSEG_64K)
+ hfree(ptr);
+# else
+ free(ptr);
+# endif
+#endif
+}
+
+#endif /* Not Borland DOS special memory handler */
+
+/* This function was added at libpng version 1.2.3. The png_malloc_warn()
+ * function will set up png_malloc() to issue a png_warning and return NULL
+ * instead of issuing a png_error, if it fails to allocate the requested
+ * memory.
+ */
+png_voidp PNGAPI
+png_malloc_warn(png_structp png_ptr, png_alloc_size_t size)
+{
+ png_voidp ptr;
+ png_uint_32 save_flags;
+ if (png_ptr == NULL)
+ return (NULL);
+
+ save_flags = png_ptr->flags;
+ png_ptr->flags|=PNG_FLAG_MALLOC_NULL_MEM_OK;
+ ptr = (png_voidp)png_malloc((png_structp)png_ptr, size);
+ png_ptr->flags=save_flags;
+ return(ptr);
+}
+
+
+#ifdef PNG_USER_MEM_SUPPORTED
+/* This function is called when the application wants to use another method
+ * of allocating and freeing memory.
+ */
+void PNGAPI
+png_set_mem_fn(png_structp png_ptr, png_voidp mem_ptr, png_malloc_ptr
+ malloc_fn, png_free_ptr free_fn)
+{
+ if (png_ptr != NULL)
+ {
+ png_ptr->mem_ptr = mem_ptr;
+ png_ptr->malloc_fn = malloc_fn;
+ png_ptr->free_fn = free_fn;
+ }
+}
+
+/* This function returns a pointer to the mem_ptr associated with the user
+ * functions. The application should free any memory associated with this
+ * pointer before png_write_destroy and png_read_destroy are called.
+ */
+png_voidp PNGAPI
+png_get_mem_ptr(png_structp png_ptr)
+{
+ if (png_ptr == NULL)
+ return (NULL);
+ return ((png_voidp)png_ptr->mem_ptr);
+}
+#endif /* PNG_USER_MEM_SUPPORTED */
+#endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */
diff --git a/src/3rdparty/libpng/pngnow.png b/src/3rdparty/libpng/pngnow.png
new file mode 100644
index 0000000..82793eb
--- /dev/null
+++ b/src/3rdparty/libpng/pngnow.png
Binary files differ
diff --git a/src/3rdparty/libpng/pngpread.c b/src/3rdparty/libpng/pngpread.c
new file mode 100644
index 0000000..e3d3111
--- /dev/null
+++ b/src/3rdparty/libpng/pngpread.c
@@ -0,0 +1,1721 @@
+
+/* pngpread.c - read a png file in push mode
+ *
+ * Last changed in libpng 1.4.0 [January 3, 2010]
+ * Copyright (c) 1998-2010 Glenn Randers-Pehrson
+ * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
+ * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ */
+
+#define PNG_NO_PEDANTIC_WARNINGS
+#include "png.h"
+#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
+#include "pngpriv.h"
+
+/* Push model modes */
+#define PNG_READ_SIG_MODE 0
+#define PNG_READ_CHUNK_MODE 1
+#define PNG_READ_IDAT_MODE 2
+#define PNG_SKIP_MODE 3
+#define PNG_READ_tEXt_MODE 4
+#define PNG_READ_zTXt_MODE 5
+#define PNG_READ_DONE_MODE 6
+#define PNG_READ_iTXt_MODE 7
+#define PNG_ERROR_MODE 8
+
+void PNGAPI
+png_process_data(png_structp png_ptr, png_infop info_ptr,
+ png_bytep buffer, png_size_t buffer_size)
+{
+ if (png_ptr == NULL || info_ptr == NULL)
+ return;
+
+ png_push_restore_buffer(png_ptr, buffer, buffer_size);
+
+ while (png_ptr->buffer_size)
+ {
+ png_process_some_data(png_ptr, info_ptr);
+ }
+}
+
+/* What we do with the incoming data depends on what we were previously
+ * doing before we ran out of data...
+ */
+void /* PRIVATE */
+png_process_some_data(png_structp png_ptr, png_infop info_ptr)
+{
+ if (png_ptr == NULL)
+ return;
+
+ switch (png_ptr->process_mode)
+ {
+ case PNG_READ_SIG_MODE:
+ {
+ png_push_read_sig(png_ptr, info_ptr);
+ break;
+ }
+
+ case PNG_READ_CHUNK_MODE:
+ {
+ png_push_read_chunk(png_ptr, info_ptr);
+ break;
+ }
+
+ case PNG_READ_IDAT_MODE:
+ {
+ png_push_read_IDAT(png_ptr);
+ break;
+ }
+
+#ifdef PNG_READ_tEXt_SUPPORTED
+ case PNG_READ_tEXt_MODE:
+ {
+ png_push_read_tEXt(png_ptr, info_ptr);
+ break;
+ }
+
+#endif
+#ifdef PNG_READ_zTXt_SUPPORTED
+ case PNG_READ_zTXt_MODE:
+ {
+ png_push_read_zTXt(png_ptr, info_ptr);
+ break;
+ }
+
+#endif
+#ifdef PNG_READ_iTXt_SUPPORTED
+ case PNG_READ_iTXt_MODE:
+ {
+ png_push_read_iTXt(png_ptr, info_ptr);
+ break;
+ }
+
+#endif
+ case PNG_SKIP_MODE:
+ {
+ png_push_crc_finish(png_ptr);
+ break;
+ }
+
+ default:
+ {
+ png_ptr->buffer_size = 0;
+ break;
+ }
+ }
+}
+
+/* Read any remaining signature bytes from the stream and compare them with
+ * the correct PNG signature. It is possible that this routine is called
+ * with bytes already read from the signature, either because they have been
+ * checked by the calling application, or because of multiple calls to this
+ * routine.
+ */
+void /* PRIVATE */
+png_push_read_sig(png_structp png_ptr, png_infop info_ptr)
+{
+ png_size_t num_checked = png_ptr->sig_bytes,
+ num_to_check = 8 - num_checked;
+
+ if (png_ptr->buffer_size < num_to_check)
+ {
+ num_to_check = png_ptr->buffer_size;
+ }
+
+ png_push_fill_buffer(png_ptr, &(info_ptr->signature[num_checked]),
+ num_to_check);
+ png_ptr->sig_bytes = (png_byte)(png_ptr->sig_bytes + num_to_check);
+
+ if (png_sig_cmp(info_ptr->signature, num_checked, num_to_check))
+ {
+ if (num_checked < 4 &&
+ png_sig_cmp(info_ptr->signature, num_checked, num_to_check - 4))
+ png_error(png_ptr, "Not a PNG file");
+ else
+ png_error(png_ptr, "PNG file corrupted by ASCII conversion");
+ }
+ else
+ {
+ if (png_ptr->sig_bytes >= 8)
+ {
+ png_ptr->process_mode = PNG_READ_CHUNK_MODE;
+ }
+ }
+}
+
+void /* PRIVATE */
+png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
+{
+ PNG_IHDR;
+ PNG_IDAT;
+ PNG_IEND;
+ PNG_PLTE;
+#ifdef PNG_READ_bKGD_SUPPORTED
+ PNG_bKGD;
+#endif
+#ifdef PNG_READ_cHRM_SUPPORTED
+ PNG_cHRM;
+#endif
+#ifdef PNG_READ_gAMA_SUPPORTED
+ PNG_gAMA;
+#endif
+#ifdef PNG_READ_hIST_SUPPORTED
+ PNG_hIST;
+#endif
+#ifdef PNG_READ_iCCP_SUPPORTED
+ PNG_iCCP;
+#endif
+#ifdef PNG_READ_iTXt_SUPPORTED
+ PNG_iTXt;
+#endif
+#ifdef PNG_READ_oFFs_SUPPORTED
+ PNG_oFFs;
+#endif
+#ifdef PNG_READ_pCAL_SUPPORTED
+ PNG_pCAL;
+#endif
+#ifdef PNG_READ_pHYs_SUPPORTED
+ PNG_pHYs;
+#endif
+#ifdef PNG_READ_sBIT_SUPPORTED
+ PNG_sBIT;
+#endif
+#ifdef PNG_READ_sCAL_SUPPORTED
+ PNG_sCAL;
+#endif
+#ifdef PNG_READ_sRGB_SUPPORTED
+ PNG_sRGB;
+#endif
+#ifdef PNG_READ_sPLT_SUPPORTED
+ PNG_sPLT;
+#endif
+#ifdef PNG_READ_tEXt_SUPPORTED
+ PNG_tEXt;
+#endif
+#ifdef PNG_READ_tIME_SUPPORTED
+ PNG_tIME;
+#endif
+#ifdef PNG_READ_tRNS_SUPPORTED
+ PNG_tRNS;
+#endif
+#ifdef PNG_READ_zTXt_SUPPORTED
+ PNG_zTXt;
+#endif
+
+ /* First we make sure we have enough data for the 4 byte chunk name
+ * and the 4 byte chunk length before proceeding with decoding the
+ * chunk data. To fully decode each of these chunks, we also make
+ * sure we have enough data in the buffer for the 4 byte CRC at the
+ * end of every chunk (except IDAT, which is handled separately).
+ */
+ if (!(png_ptr->mode & PNG_HAVE_CHUNK_HEADER))
+ {
+ png_byte chunk_length[4];
+
+ if (png_ptr->buffer_size < 8)
+ {
+ png_push_save_buffer(png_ptr);
+ return;
+ }
+
+ png_push_fill_buffer(png_ptr, chunk_length, 4);
+ png_ptr->push_length = png_get_uint_31(png_ptr, chunk_length);
+ png_reset_crc(png_ptr);
+ png_crc_read(png_ptr, png_ptr->chunk_name, 4);
+ png_check_chunk_name(png_ptr, png_ptr->chunk_name);
+ png_ptr->mode |= PNG_HAVE_CHUNK_HEADER;
+ }
+
+ if (!png_memcmp(png_ptr->chunk_name, png_IDAT, 4))
+ if (png_ptr->mode & PNG_AFTER_IDAT)
+ png_ptr->mode |= PNG_HAVE_CHUNK_AFTER_IDAT;
+
+ if (!png_memcmp(png_ptr->chunk_name, png_IHDR, 4))
+ {
+ if (png_ptr->push_length != 13)
+ png_error(png_ptr, "Invalid IHDR length");
+
+ if (png_ptr->push_length + 4 > png_ptr->buffer_size)
+ {
+ png_push_save_buffer(png_ptr);
+ return;
+ }
+
+ png_handle_IHDR(png_ptr, info_ptr, png_ptr->push_length);
+ }
+
+ else if (!png_memcmp(png_ptr->chunk_name, png_IEND, 4))
+ {
+ if (png_ptr->push_length + 4 > png_ptr->buffer_size)
+ {
+ png_push_save_buffer(png_ptr);
+ return;
+ }
+
+ png_handle_IEND(png_ptr, info_ptr, png_ptr->push_length);
+
+ png_ptr->process_mode = PNG_READ_DONE_MODE;
+ png_push_have_end(png_ptr, info_ptr);
+ }
+
+#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
+ else if (png_handle_as_unknown(png_ptr, png_ptr->chunk_name))
+ {
+ if (png_ptr->push_length + 4 > png_ptr->buffer_size)
+ {
+ png_push_save_buffer(png_ptr);
+ return;
+ }
+
+ if (!png_memcmp(png_ptr->chunk_name, png_IDAT, 4))
+ png_ptr->mode |= PNG_HAVE_IDAT;
+
+ png_handle_unknown(png_ptr, info_ptr, png_ptr->push_length);
+
+ if (!png_memcmp(png_ptr->chunk_name, png_PLTE, 4))
+ png_ptr->mode |= PNG_HAVE_PLTE;
+
+ else if (!png_memcmp(png_ptr->chunk_name, png_IDAT, 4))
+ {
+ if (!(png_ptr->mode & PNG_HAVE_IHDR))
+ png_error(png_ptr, "Missing IHDR before IDAT");
+
+ else if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE &&
+ !(png_ptr->mode & PNG_HAVE_PLTE))
+ png_error(png_ptr, "Missing PLTE before IDAT");
+ }
+ }
+
+#endif
+ else if (!png_memcmp(png_ptr->chunk_name, png_PLTE, 4))
+ {
+ if (png_ptr->push_length + 4 > png_ptr->buffer_size)
+ {
+ png_push_save_buffer(png_ptr);
+ return;
+ }
+ png_handle_PLTE(png_ptr, info_ptr, png_ptr->push_length);
+ }
+
+ else if (!png_memcmp(png_ptr->chunk_name, png_IDAT, 4))
+ {
+ /* If we reach an IDAT chunk, this means we have read all of the
+ * header chunks, and we can start reading the image (or if this
+ * is called after the image has been read - we have an error).
+ */
+
+ if (!(png_ptr->mode & PNG_HAVE_IHDR))
+ png_error(png_ptr, "Missing IHDR before IDAT");
+
+ else if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE &&
+ !(png_ptr->mode & PNG_HAVE_PLTE))
+ png_error(png_ptr, "Missing PLTE before IDAT");
+
+ if (png_ptr->mode & PNG_HAVE_IDAT)
+ {
+ if (!(png_ptr->mode & PNG_HAVE_CHUNK_AFTER_IDAT))
+ if (png_ptr->push_length == 0)
+ return;
+
+ if (png_ptr->mode & PNG_AFTER_IDAT)
+ png_benign_error(png_ptr, "Too many IDATs found");
+ }
+
+ png_ptr->idat_size = png_ptr->push_length;
+ png_ptr->mode |= PNG_HAVE_IDAT;
+ png_ptr->process_mode = PNG_READ_IDAT_MODE;
+ png_push_have_info(png_ptr, info_ptr);
+ png_ptr->zstream.avail_out = (uInt)png_ptr->irowbytes;
+ png_ptr->zstream.next_out = png_ptr->row_buf;
+ return;
+ }
+
+#ifdef PNG_READ_gAMA_SUPPORTED
+ else if (!png_memcmp(png_ptr->chunk_name, png_gAMA, 4))
+ {
+ if (png_ptr->push_length + 4 > png_ptr->buffer_size)
+ {
+ png_push_save_buffer(png_ptr);
+ return;
+ }
+
+ png_handle_gAMA(png_ptr, info_ptr, png_ptr->push_length);
+ }
+
+#endif
+#ifdef PNG_READ_sBIT_SUPPORTED
+ else if (!png_memcmp(png_ptr->chunk_name, png_sBIT, 4))
+ {
+ if (png_ptr->push_length + 4 > png_ptr->buffer_size)
+ {
+ png_push_save_buffer(png_ptr);
+ return;
+ }
+
+ png_handle_sBIT(png_ptr, info_ptr, png_ptr->push_length);
+ }
+
+#endif
+#ifdef PNG_READ_cHRM_SUPPORTED
+ else if (!png_memcmp(png_ptr->chunk_name, png_cHRM, 4))
+ {
+ if (png_ptr->push_length + 4 > png_ptr->buffer_size)
+ {
+ png_push_save_buffer(png_ptr);
+ return;
+ }
+
+ png_handle_cHRM(png_ptr, info_ptr, png_ptr->push_length);
+ }
+
+#endif
+#ifdef PNG_READ_sRGB_SUPPORTED
+ else if (!png_memcmp(png_ptr->chunk_name, png_sRGB, 4))
+ {
+ if (png_ptr->push_length + 4 > png_ptr->buffer_size)
+ {
+ png_push_save_buffer(png_ptr);
+ return;
+ }
+
+ png_handle_sRGB(png_ptr, info_ptr, png_ptr->push_length);
+ }
+
+#endif
+#ifdef PNG_READ_iCCP_SUPPORTED
+ else if (!png_memcmp(png_ptr->chunk_name, png_iCCP, 4))
+ {
+ if (png_ptr->push_length + 4 > png_ptr->buffer_size)
+ {
+ png_push_save_buffer(png_ptr);
+ return;
+ }
+
+ png_handle_iCCP(png_ptr, info_ptr, png_ptr->push_length);
+ }
+
+#endif
+#ifdef PNG_READ_sPLT_SUPPORTED
+ else if (!png_memcmp(png_ptr->chunk_name, png_sPLT, 4))
+ {
+ if (png_ptr->push_length + 4 > png_ptr->buffer_size)
+ {
+ png_push_save_buffer(png_ptr);
+ return;
+ }
+
+ png_handle_sPLT(png_ptr, info_ptr, png_ptr->push_length);
+ }
+
+#endif
+#ifdef PNG_READ_tRNS_SUPPORTED
+ else if (!png_memcmp(png_ptr->chunk_name, png_tRNS, 4))
+ {
+ if (png_ptr->push_length + 4 > png_ptr->buffer_size)
+ {
+ png_push_save_buffer(png_ptr);
+ return;
+ }
+
+ png_handle_tRNS(png_ptr, info_ptr, png_ptr->push_length);
+ }
+
+#endif
+#ifdef PNG_READ_bKGD_SUPPORTED
+ else if (!png_memcmp(png_ptr->chunk_name, png_bKGD, 4))
+ {
+ if (png_ptr->push_length + 4 > png_ptr->buffer_size)
+ {
+ png_push_save_buffer(png_ptr);
+ return;
+ }
+
+ png_handle_bKGD(png_ptr, info_ptr, png_ptr->push_length);
+ }
+
+#endif
+#ifdef PNG_READ_hIST_SUPPORTED
+ else if (!png_memcmp(png_ptr->chunk_name, png_hIST, 4))
+ {
+ if (png_ptr->push_length + 4 > png_ptr->buffer_size)
+ {
+ png_push_save_buffer(png_ptr);
+ return;
+ }
+
+ png_handle_hIST(png_ptr, info_ptr, png_ptr->push_length);
+ }
+
+#endif
+#ifdef PNG_READ_pHYs_SUPPORTED
+ else if (!png_memcmp(png_ptr->chunk_name, png_pHYs, 4))
+ {
+ if (png_ptr->push_length + 4 > png_ptr->buffer_size)
+ {
+ png_push_save_buffer(png_ptr);
+ return;
+ }
+
+ png_handle_pHYs(png_ptr, info_ptr, png_ptr->push_length);
+ }
+
+#endif
+#ifdef PNG_READ_oFFs_SUPPORTED
+ else if (!png_memcmp(png_ptr->chunk_name, png_oFFs, 4))
+ {
+ if (png_ptr->push_length + 4 > png_ptr->buffer_size)
+ {
+ png_push_save_buffer(png_ptr);
+ return;
+ }
+
+ png_handle_oFFs(png_ptr, info_ptr, png_ptr->push_length);
+ }
+#endif
+
+#ifdef PNG_READ_pCAL_SUPPORTED
+ else if (!png_memcmp(png_ptr->chunk_name, png_pCAL, 4))
+ {
+ if (png_ptr->push_length + 4 > png_ptr->buffer_size)
+ {
+ png_push_save_buffer(png_ptr);
+ return;
+ }
+
+ png_handle_pCAL(png_ptr, info_ptr, png_ptr->push_length);
+ }
+
+#endif
+#ifdef PNG_READ_sCAL_SUPPORTED
+ else if (!png_memcmp(png_ptr->chunk_name, png_sCAL, 4))
+ {
+ if (png_ptr->push_length + 4 > png_ptr->buffer_size)
+ {
+ png_push_save_buffer(png_ptr);
+ return;
+ }
+
+ png_handle_sCAL(png_ptr, info_ptr, png_ptr->push_length);
+ }
+
+#endif
+#ifdef PNG_READ_tIME_SUPPORTED
+ else if (!png_memcmp(png_ptr->chunk_name, png_tIME, 4))
+ {
+ if (png_ptr->push_length + 4 > png_ptr->buffer_size)
+ {
+ png_push_save_buffer(png_ptr);
+ return;
+ }
+
+ png_handle_tIME(png_ptr, info_ptr, png_ptr->push_length);
+ }
+
+#endif
+#ifdef PNG_READ_tEXt_SUPPORTED
+ else if (!png_memcmp(png_ptr->chunk_name, png_tEXt, 4))
+ {
+ if (png_ptr->push_length + 4 > png_ptr->buffer_size)
+ {
+ png_push_save_buffer(png_ptr);
+ return;
+ }
+
+ png_push_handle_tEXt(png_ptr, info_ptr, png_ptr->push_length);
+ }
+
+#endif
+#ifdef PNG_READ_zTXt_SUPPORTED
+ else if (!png_memcmp(png_ptr->chunk_name, png_zTXt, 4))
+ {
+ if (png_ptr->push_length + 4 > png_ptr->buffer_size)
+ {
+ png_push_save_buffer(png_ptr);
+ return;
+ }
+
+ png_push_handle_zTXt(png_ptr, info_ptr, png_ptr->push_length);
+ }
+
+#endif
+#ifdef PNG_READ_iTXt_SUPPORTED
+ else if (!png_memcmp(png_ptr->chunk_name, png_iTXt, 4))
+ {
+ if (png_ptr->push_length + 4 > png_ptr->buffer_size)
+ {
+ png_push_save_buffer(png_ptr);
+ return;
+ }
+
+ png_push_handle_iTXt(png_ptr, info_ptr, png_ptr->push_length);
+ }
+
+#endif
+ else
+ {
+ if (png_ptr->push_length + 4 > png_ptr->buffer_size)
+ {
+ png_push_save_buffer(png_ptr);
+ return;
+ }
+ png_push_handle_unknown(png_ptr, info_ptr, png_ptr->push_length);
+ }
+
+ png_ptr->mode &= ~PNG_HAVE_CHUNK_HEADER;
+}
+
+void /* PRIVATE */
+png_push_crc_skip(png_structp png_ptr, png_uint_32 skip)
+{
+ png_ptr->process_mode = PNG_SKIP_MODE;
+ png_ptr->skip_length = skip;
+}
+
+void /* PRIVATE */
+png_push_crc_finish(png_structp png_ptr)
+{
+ if (png_ptr->skip_length && png_ptr->save_buffer_size)
+ {
+ png_size_t save_size;
+
+ if (png_ptr->skip_length < (png_uint_32)png_ptr->save_buffer_size)
+ save_size = (png_size_t)png_ptr->skip_length;
+ else
+ save_size = png_ptr->save_buffer_size;
+
+ png_calculate_crc(png_ptr, png_ptr->save_buffer_ptr, save_size);
+
+ png_ptr->skip_length -= save_size;
+ png_ptr->buffer_size -= save_size;
+ png_ptr->save_buffer_size -= save_size;
+ png_ptr->save_buffer_ptr += save_size;
+ }
+ if (png_ptr->skip_length && png_ptr->current_buffer_size)
+ {
+ png_size_t save_size;
+
+ if (png_ptr->skip_length < (png_uint_32)png_ptr->current_buffer_size)
+ save_size = (png_size_t)png_ptr->skip_length;
+ else
+ save_size = png_ptr->current_buffer_size;
+
+ png_calculate_crc(png_ptr, png_ptr->current_buffer_ptr, save_size);
+
+ png_ptr->skip_length -= save_size;
+ png_ptr->buffer_size -= save_size;
+ png_ptr->current_buffer_size -= save_size;
+ png_ptr->current_buffer_ptr += save_size;
+ }
+ if (!png_ptr->skip_length)
+ {
+ if (png_ptr->buffer_size < 4)
+ {
+ png_push_save_buffer(png_ptr);
+ return;
+ }
+
+ png_crc_finish(png_ptr, 0);
+ png_ptr->process_mode = PNG_READ_CHUNK_MODE;
+ }
+}
+
+void PNGAPI
+png_push_fill_buffer(png_structp png_ptr, png_bytep buffer, png_size_t length)
+{
+ png_bytep ptr;
+
+ if (png_ptr == NULL)
+ return;
+
+ ptr = buffer;
+ if (png_ptr->save_buffer_size)
+ {
+ png_size_t save_size;
+
+ if (length < png_ptr->save_buffer_size)
+ save_size = length;
+ else
+ save_size = png_ptr->save_buffer_size;
+
+ png_memcpy(ptr, png_ptr->save_buffer_ptr, save_size);
+ length -= save_size;
+ ptr += save_size;
+ png_ptr->buffer_size -= save_size;
+ png_ptr->save_buffer_size -= save_size;
+ png_ptr->save_buffer_ptr += save_size;
+ }
+ if (length && png_ptr->current_buffer_size)
+ {
+ png_size_t save_size;
+
+ if (length < png_ptr->current_buffer_size)
+ save_size = length;
+
+ else
+ save_size = png_ptr->current_buffer_size;
+
+ png_memcpy(ptr, png_ptr->current_buffer_ptr, save_size);
+ png_ptr->buffer_size -= save_size;
+ png_ptr->current_buffer_size -= save_size;
+ png_ptr->current_buffer_ptr += save_size;
+ }
+}
+
+void /* PRIVATE */
+png_push_save_buffer(png_structp png_ptr)
+{
+ if (png_ptr->save_buffer_size)
+ {
+ if (png_ptr->save_buffer_ptr != png_ptr->save_buffer)
+ {
+ png_size_t i, istop;
+ png_bytep sp;
+ png_bytep dp;
+
+ istop = png_ptr->save_buffer_size;
+ for (i = 0, sp = png_ptr->save_buffer_ptr, dp = png_ptr->save_buffer;
+ i < istop; i++, sp++, dp++)
+ {
+ *dp = *sp;
+ }
+ }
+ }
+ if (png_ptr->save_buffer_size + png_ptr->current_buffer_size >
+ png_ptr->save_buffer_max)
+ {
+ png_size_t new_max;
+ png_bytep old_buffer;
+
+ if (png_ptr->save_buffer_size > PNG_SIZE_MAX -
+ (png_ptr->current_buffer_size + 256))
+ {
+ png_error(png_ptr, "Potential overflow of save_buffer");
+ }
+
+ new_max = png_ptr->save_buffer_size + png_ptr->current_buffer_size + 256;
+ old_buffer = png_ptr->save_buffer;
+ png_ptr->save_buffer = (png_bytep)png_malloc(png_ptr,
+ (png_size_t)new_max);
+ png_memcpy(png_ptr->save_buffer, old_buffer, png_ptr->save_buffer_size);
+ png_free(png_ptr, old_buffer);
+ png_ptr->save_buffer_max = new_max;
+ }
+ if (png_ptr->current_buffer_size)
+ {
+ png_memcpy(png_ptr->save_buffer + png_ptr->save_buffer_size,
+ png_ptr->current_buffer_ptr, png_ptr->current_buffer_size);
+ png_ptr->save_buffer_size += png_ptr->current_buffer_size;
+ png_ptr->current_buffer_size = 0;
+ }
+ png_ptr->save_buffer_ptr = png_ptr->save_buffer;
+ png_ptr->buffer_size = 0;
+}
+
+void /* PRIVATE */
+png_push_restore_buffer(png_structp png_ptr, png_bytep buffer,
+ png_size_t buffer_length)
+{
+ png_ptr->current_buffer = buffer;
+ png_ptr->current_buffer_size = buffer_length;
+ png_ptr->buffer_size = buffer_length + png_ptr->save_buffer_size;
+ png_ptr->current_buffer_ptr = png_ptr->current_buffer;
+}
+
+void /* PRIVATE */
+png_push_read_IDAT(png_structp png_ptr)
+{
+ PNG_IDAT;
+ if (!(png_ptr->mode & PNG_HAVE_CHUNK_HEADER))
+ {
+ png_byte chunk_length[4];
+
+ if (png_ptr->buffer_size < 8)
+ {
+ png_push_save_buffer(png_ptr);
+ return;
+ }
+
+ png_push_fill_buffer(png_ptr, chunk_length, 4);
+ png_ptr->push_length = png_get_uint_31(png_ptr, chunk_length);
+ png_reset_crc(png_ptr);
+ png_crc_read(png_ptr, png_ptr->chunk_name, 4);
+ png_ptr->mode |= PNG_HAVE_CHUNK_HEADER;
+
+ if (png_memcmp(png_ptr->chunk_name, png_IDAT, 4))
+ {
+ png_ptr->process_mode = PNG_READ_CHUNK_MODE;
+ if (!(png_ptr->flags & PNG_FLAG_ZLIB_FINISHED))
+ png_error(png_ptr, "Not enough compressed data");
+ return;
+ }
+
+ png_ptr->idat_size = png_ptr->push_length;
+ }
+ if (png_ptr->idat_size && png_ptr->save_buffer_size)
+ {
+ png_size_t save_size;
+
+ if (png_ptr->idat_size < (png_uint_32)png_ptr->save_buffer_size)
+ {
+ save_size = (png_size_t)png_ptr->idat_size;
+
+ /* Check for overflow */
+ if ((png_uint_32)save_size != png_ptr->idat_size)
+ png_error(png_ptr, "save_size overflowed in pngpread");
+ }
+ else
+ save_size = png_ptr->save_buffer_size;
+
+ png_calculate_crc(png_ptr, png_ptr->save_buffer_ptr, save_size);
+
+ if (!(png_ptr->flags & PNG_FLAG_ZLIB_FINISHED))
+ png_process_IDAT_data(png_ptr, png_ptr->save_buffer_ptr, save_size);
+
+ png_ptr->idat_size -= save_size;
+ png_ptr->buffer_size -= save_size;
+ png_ptr->save_buffer_size -= save_size;
+ png_ptr->save_buffer_ptr += save_size;
+ }
+ if (png_ptr->idat_size && png_ptr->current_buffer_size)
+ {
+ png_size_t save_size;
+
+ if (png_ptr->idat_size < (png_uint_32)png_ptr->current_buffer_size)
+ {
+ save_size = (png_size_t)png_ptr->idat_size;
+
+ /* Check for overflow */
+ if ((png_uint_32)save_size != png_ptr->idat_size)
+ png_error(png_ptr, "save_size overflowed in pngpread");
+ }
+ else
+ save_size = png_ptr->current_buffer_size;
+
+ png_calculate_crc(png_ptr, png_ptr->current_buffer_ptr, save_size);
+ if (!(png_ptr->flags & PNG_FLAG_ZLIB_FINISHED))
+ png_process_IDAT_data(png_ptr, png_ptr->current_buffer_ptr, save_size);
+
+ png_ptr->idat_size -= save_size;
+ png_ptr->buffer_size -= save_size;
+ png_ptr->current_buffer_size -= save_size;
+ png_ptr->current_buffer_ptr += save_size;
+ }
+ if (!png_ptr->idat_size)
+ {
+ if (png_ptr->buffer_size < 4)
+ {
+ png_push_save_buffer(png_ptr);
+ return;
+ }
+
+ png_crc_finish(png_ptr, 0);
+ png_ptr->mode &= ~PNG_HAVE_CHUNK_HEADER;
+ png_ptr->mode |= PNG_AFTER_IDAT;
+ }
+}
+
+void /* PRIVATE */
+png_process_IDAT_data(png_structp png_ptr, png_bytep buffer,
+ png_size_t buffer_length)
+{
+ int ret;
+
+ if ((png_ptr->flags & PNG_FLAG_ZLIB_FINISHED) && buffer_length)
+ png_benign_error(png_ptr, "Extra compression data");
+
+ png_ptr->zstream.next_in = buffer;
+ png_ptr->zstream.avail_in = (uInt)buffer_length;
+ for (;;)
+ {
+ ret = inflate(&png_ptr->zstream, Z_PARTIAL_FLUSH);
+ if (ret != Z_OK)
+ {
+ if (ret == Z_STREAM_END)
+ {
+ if (png_ptr->zstream.avail_in)
+ png_benign_error(png_ptr, "Extra compressed data");
+
+ if (!(png_ptr->zstream.avail_out))
+ {
+ png_push_process_row(png_ptr);
+ }
+
+ png_ptr->mode |= PNG_AFTER_IDAT;
+ png_ptr->flags |= PNG_FLAG_ZLIB_FINISHED;
+ break;
+ }
+ else if (ret == Z_BUF_ERROR)
+ break;
+
+ else
+ png_error(png_ptr, "Decompression Error");
+ }
+ if (!(png_ptr->zstream.avail_out))
+ {
+ if ((
+#ifdef PNG_READ_INTERLACING_SUPPORTED
+ png_ptr->interlaced && png_ptr->pass > 6) ||
+ (!png_ptr->interlaced &&
+#endif
+ png_ptr->row_number == png_ptr->num_rows))
+ {
+ if (png_ptr->zstream.avail_in)
+ png_warning(png_ptr, "Too much data in IDAT chunks");
+ png_ptr->flags |= PNG_FLAG_ZLIB_FINISHED;
+ break;
+ }
+ png_push_process_row(png_ptr);
+ png_ptr->zstream.avail_out = (uInt)png_ptr->irowbytes;
+ png_ptr->zstream.next_out = png_ptr->row_buf;
+ }
+
+ else
+ break;
+ }
+}
+
+void /* PRIVATE */
+png_push_process_row(png_structp png_ptr)
+{
+ png_ptr->row_info.color_type = png_ptr->color_type;
+ png_ptr->row_info.width = png_ptr->iwidth;
+ png_ptr->row_info.channels = png_ptr->channels;
+ png_ptr->row_info.bit_depth = png_ptr->bit_depth;
+ png_ptr->row_info.pixel_depth = png_ptr->pixel_depth;
+
+ png_ptr->row_info.rowbytes = PNG_ROWBYTES(png_ptr->row_info.pixel_depth,
+ png_ptr->row_info.width);
+
+ png_read_filter_row(png_ptr, &(png_ptr->row_info),
+ png_ptr->row_buf + 1, png_ptr->prev_row + 1,
+ (int)(png_ptr->row_buf[0]));
+
+ png_memcpy(png_ptr->prev_row, png_ptr->row_buf, png_ptr->rowbytes + 1);
+
+ if (png_ptr->transformations || (png_ptr->flags&PNG_FLAG_STRIP_ALPHA))
+ png_do_read_transformations(png_ptr);
+
+#ifdef PNG_READ_INTERLACING_SUPPORTED
+ /* Blow up interlaced rows to full size */
+ if (png_ptr->interlaced && (png_ptr->transformations & PNG_INTERLACE))
+ {
+ if (png_ptr->pass < 6)
+/* old interface (pre-1.0.9):
+ png_do_read_interlace(&(png_ptr->row_info),
+ png_ptr->row_buf + 1, png_ptr->pass, png_ptr->transformations);
+ */
+ png_do_read_interlace(png_ptr);
+
+ switch (png_ptr->pass)
+ {
+ case 0:
+ {
+ int i;
+ for (i = 0; i < 8 && png_ptr->pass == 0; i++)
+ {
+ png_push_have_row(png_ptr, png_ptr->row_buf + 1);
+ png_read_push_finish_row(png_ptr); /* Updates png_ptr->pass */
+ }
+
+ if (png_ptr->pass == 2) /* Pass 1 might be empty */
+ {
+ for (i = 0; i < 4 && png_ptr->pass == 2; i++)
+ {
+ png_push_have_row(png_ptr, NULL);
+ png_read_push_finish_row(png_ptr);
+ }
+ }
+
+ if (png_ptr->pass == 4 && png_ptr->height <= 4)
+ {
+ for (i = 0; i < 2 && png_ptr->pass == 4; i++)
+ {
+ png_push_have_row(png_ptr, NULL);
+ png_read_push_finish_row(png_ptr);
+ }
+ }
+
+ if (png_ptr->pass == 6 && png_ptr->height <= 4)
+ {
+ png_push_have_row(png_ptr, NULL);
+ png_read_push_finish_row(png_ptr);
+ }
+
+ break;
+ }
+
+ case 1:
+ {
+ int i;
+ for (i = 0; i < 8 && png_ptr->pass == 1; i++)
+ {
+ png_push_have_row(png_ptr, png_ptr->row_buf + 1);
+ png_read_push_finish_row(png_ptr);
+ }
+
+ if (png_ptr->pass == 2) /* Skip top 4 generated rows */
+ {
+ for (i = 0; i < 4 && png_ptr->pass == 2; i++)
+ {
+ png_push_have_row(png_ptr, NULL);
+ png_read_push_finish_row(png_ptr);
+ }
+ }
+
+ break;
+ }
+
+ case 2:
+ {
+ int i;
+
+ for (i = 0; i < 4 && png_ptr->pass == 2; i++)
+ {
+ png_push_have_row(png_ptr, png_ptr->row_buf + 1);
+ png_read_push_finish_row(png_ptr);
+ }
+
+ for (i = 0; i < 4 && png_ptr->pass == 2; i++)
+ {
+ png_push_have_row(png_ptr, NULL);
+ png_read_push_finish_row(png_ptr);
+ }
+
+ if (png_ptr->pass == 4) /* Pass 3 might be empty */
+ {
+ for (i = 0; i < 2 && png_ptr->pass == 4; i++)
+ {
+ png_push_have_row(png_ptr, NULL);
+ png_read_push_finish_row(png_ptr);
+ }
+ }
+
+ break;
+ }
+
+ case 3:
+ {
+ int i;
+
+ for (i = 0; i < 4 && png_ptr->pass == 3; i++)
+ {
+ png_push_have_row(png_ptr, png_ptr->row_buf + 1);
+ png_read_push_finish_row(png_ptr);
+ }
+
+ if (png_ptr->pass == 4) /* Skip top two generated rows */
+ {
+ for (i = 0; i < 2 && png_ptr->pass == 4; i++)
+ {
+ png_push_have_row(png_ptr, NULL);
+ png_read_push_finish_row(png_ptr);
+ }
+ }
+
+ break;
+ }
+
+ case 4:
+ {
+ int i;
+
+ for (i = 0; i < 2 && png_ptr->pass == 4; i++)
+ {
+ png_push_have_row(png_ptr, png_ptr->row_buf + 1);
+ png_read_push_finish_row(png_ptr);
+ }
+
+ for (i = 0; i < 2 && png_ptr->pass == 4; i++)
+ {
+ png_push_have_row(png_ptr, NULL);
+ png_read_push_finish_row(png_ptr);
+ }
+
+ if (png_ptr->pass == 6) /* Pass 5 might be empty */
+ {
+ png_push_have_row(png_ptr, NULL);
+ png_read_push_finish_row(png_ptr);
+ }
+
+ break;
+ }
+
+ case 5:
+ {
+ int i;
+
+ for (i = 0; i < 2 && png_ptr->pass == 5; i++)
+ {
+ png_push_have_row(png_ptr, png_ptr->row_buf + 1);
+ png_read_push_finish_row(png_ptr);
+ }
+
+ if (png_ptr->pass == 6) /* Skip top generated row */
+ {
+ png_push_have_row(png_ptr, NULL);
+ png_read_push_finish_row(png_ptr);
+ }
+
+ break;
+ }
+ case 6:
+ {
+ png_push_have_row(png_ptr, png_ptr->row_buf + 1);
+ png_read_push_finish_row(png_ptr);
+
+ if (png_ptr->pass != 6)
+ break;
+
+ png_push_have_row(png_ptr, NULL);
+ png_read_push_finish_row(png_ptr);
+ }
+ }
+ }
+ else
+#endif
+ {
+ png_push_have_row(png_ptr, png_ptr->row_buf + 1);
+ png_read_push_finish_row(png_ptr);
+ }
+}
+
+void /* PRIVATE */
+png_read_push_finish_row(png_structp png_ptr)
+{
+ /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
+
+ /* Start of interlace block */
+ PNG_CONST int FARDATA png_pass_start[] = {0, 4, 0, 2, 0, 1, 0};
+
+ /* Offset to next interlace block */
+ PNG_CONST int FARDATA png_pass_inc[] = {8, 8, 4, 4, 2, 2, 1};
+
+ /* Start of interlace block in the y direction */
+ PNG_CONST int FARDATA png_pass_ystart[] = {0, 0, 4, 0, 2, 0, 1};
+
+ /* Offset to next interlace block in the y direction */
+ PNG_CONST int FARDATA png_pass_yinc[] = {8, 8, 8, 4, 4, 2, 2};
+
+ /* Height of interlace block. This is not currently used - if you need
+ * it, uncomment it here and in png.h
+ PNG_CONST int FARDATA png_pass_height[] = {8, 8, 4, 4, 2, 2, 1};
+ */
+
+ png_ptr->row_number++;
+ if (png_ptr->row_number < png_ptr->num_rows)
+ return;
+
+#ifdef PNG_READ_INTERLACING_SUPPORTED
+ if (png_ptr->interlaced)
+ {
+ png_ptr->row_number = 0;
+ png_memset(png_ptr->prev_row, 0,
+ png_ptr->rowbytes + 1);
+ do
+ {
+ png_ptr->pass++;
+ if ((png_ptr->pass == 1 && png_ptr->width < 5) ||
+ (png_ptr->pass == 3 && png_ptr->width < 3) ||
+ (png_ptr->pass == 5 && png_ptr->width < 2))
+ png_ptr->pass++;
+
+ if (png_ptr->pass > 7)
+ png_ptr->pass--;
+
+ if (png_ptr->pass >= 7)
+ break;
+
+ png_ptr->iwidth = (png_ptr->width +
+ png_pass_inc[png_ptr->pass] - 1 -
+ png_pass_start[png_ptr->pass]) /
+ png_pass_inc[png_ptr->pass];
+
+ png_ptr->irowbytes = PNG_ROWBYTES(png_ptr->pixel_depth,
+ png_ptr->iwidth) + 1;
+
+ if (png_ptr->transformations & PNG_INTERLACE)
+ break;
+
+ png_ptr->num_rows = (png_ptr->height +
+ png_pass_yinc[png_ptr->pass] - 1 -
+ png_pass_ystart[png_ptr->pass]) /
+ png_pass_yinc[png_ptr->pass];
+
+ } while (png_ptr->iwidth == 0 || png_ptr->num_rows == 0);
+ }
+#endif /* PNG_READ_INTERLACING_SUPPORTED */
+}
+
+#ifdef PNG_READ_tEXt_SUPPORTED
+void /* PRIVATE */
+png_push_handle_tEXt(png_structp png_ptr, png_infop info_ptr, png_uint_32
+ length)
+{
+ if (!(png_ptr->mode & PNG_HAVE_IHDR) || (png_ptr->mode & PNG_HAVE_IEND))
+ {
+ png_error(png_ptr, "Out of place tEXt");
+ info_ptr = info_ptr; /* To quiet some compiler warnings */
+ }
+
+#ifdef PNG_MAX_MALLOC_64K
+ png_ptr->skip_length = 0; /* This may not be necessary */
+
+ if (length > (png_uint_32)65535L) /* Can't hold entire string in memory */
+ {
+ png_warning(png_ptr, "tEXt chunk too large to fit in memory");
+ png_ptr->skip_length = length - (png_uint_32)65535L;
+ length = (png_uint_32)65535L;
+ }
+#endif
+
+ png_ptr->current_text = (png_charp)png_malloc(png_ptr,
+ (png_size_t)(length + 1));
+ png_ptr->current_text[length] = '\0';
+ png_ptr->current_text_ptr = png_ptr->current_text;
+ png_ptr->current_text_size = (png_size_t)length;
+ png_ptr->current_text_left = (png_size_t)length;
+ png_ptr->process_mode = PNG_READ_tEXt_MODE;
+}
+
+void /* PRIVATE */
+png_push_read_tEXt(png_structp png_ptr, png_infop info_ptr)
+{
+ if (png_ptr->buffer_size && png_ptr->current_text_left)
+ {
+ png_size_t text_size;
+
+ if (png_ptr->buffer_size < png_ptr->current_text_left)
+ text_size = png_ptr->buffer_size;
+
+ else
+ text_size = png_ptr->current_text_left;
+
+ png_crc_read(png_ptr, (png_bytep)png_ptr->current_text_ptr, text_size);
+ png_ptr->current_text_left -= text_size;
+ png_ptr->current_text_ptr += text_size;
+ }
+ if (!(png_ptr->current_text_left))
+ {
+ png_textp text_ptr;
+ png_charp text;
+ png_charp key;
+ int ret;
+
+ if (png_ptr->buffer_size < 4)
+ {
+ png_push_save_buffer(png_ptr);
+ return;
+ }
+
+ png_push_crc_finish(png_ptr);
+
+#ifdef PNG_MAX_MALLOC_64K
+ if (png_ptr->skip_length)
+ return;
+#endif
+
+ key = png_ptr->current_text;
+
+ for (text = key; *text; text++)
+ /* Empty loop */ ;
+
+ if (text < key + png_ptr->current_text_size)
+ text++;
+
+ text_ptr = (png_textp)png_malloc(png_ptr,
+ png_sizeof(png_text));
+ text_ptr->compression = PNG_TEXT_COMPRESSION_NONE;
+ text_ptr->key = key;
+#ifdef PNG_iTXt_SUPPORTED
+ text_ptr->lang = NULL;
+ text_ptr->lang_key = NULL;
+#endif
+ text_ptr->text = text;
+
+ ret = png_set_text_2(png_ptr, info_ptr, text_ptr, 1);
+
+ png_free(png_ptr, key);
+ png_free(png_ptr, text_ptr);
+ png_ptr->current_text = NULL;
+
+ if (ret)
+ png_warning(png_ptr, "Insufficient memory to store text chunk");
+ }
+}
+#endif
+
+#ifdef PNG_READ_zTXt_SUPPORTED
+void /* PRIVATE */
+png_push_handle_zTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32
+ length)
+{
+ if (!(png_ptr->mode & PNG_HAVE_IHDR) || (png_ptr->mode & PNG_HAVE_IEND))
+ {
+ png_error(png_ptr, "Out of place zTXt");
+ info_ptr = info_ptr; /* To quiet some compiler warnings */
+ }
+
+#ifdef PNG_MAX_MALLOC_64K
+ /* We can't handle zTXt chunks > 64K, since we don't have enough space
+ * to be able to store the uncompressed data. Actually, the threshold
+ * is probably around 32K, but it isn't as definite as 64K is.
+ */
+ if (length > (png_uint_32)65535L)
+ {
+ png_warning(png_ptr, "zTXt chunk too large to fit in memory");
+ png_push_crc_skip(png_ptr, length);
+ return;
+ }
+#endif
+
+ png_ptr->current_text = (png_charp)png_malloc(png_ptr,
+ (png_size_t)(length + 1));
+ png_ptr->current_text[length] = '\0';
+ png_ptr->current_text_ptr = png_ptr->current_text;
+ png_ptr->current_text_size = (png_size_t)length;
+ png_ptr->current_text_left = (png_size_t)length;
+ png_ptr->process_mode = PNG_READ_zTXt_MODE;
+}
+
+void /* PRIVATE */
+png_push_read_zTXt(png_structp png_ptr, png_infop info_ptr)
+{
+ if (png_ptr->buffer_size && png_ptr->current_text_left)
+ {
+ png_size_t text_size;
+
+ if (png_ptr->buffer_size < (png_uint_32)png_ptr->current_text_left)
+ text_size = png_ptr->buffer_size;
+
+ else
+ text_size = png_ptr->current_text_left;
+
+ png_crc_read(png_ptr, (png_bytep)png_ptr->current_text_ptr, text_size);
+ png_ptr->current_text_left -= text_size;
+ png_ptr->current_text_ptr += text_size;
+ }
+ if (!(png_ptr->current_text_left))
+ {
+ png_textp text_ptr;
+ png_charp text;
+ png_charp key;
+ int ret;
+ png_size_t text_size, key_size;
+
+ if (png_ptr->buffer_size < 4)
+ {
+ png_push_save_buffer(png_ptr);
+ return;
+ }
+
+ png_push_crc_finish(png_ptr);
+
+ key = png_ptr->current_text;
+
+ for (text = key; *text; text++)
+ /* Empty loop */ ;
+
+ /* zTXt can't have zero text */
+ if (text >= key + png_ptr->current_text_size)
+ {
+ png_ptr->current_text = NULL;
+ png_free(png_ptr, key);
+ return;
+ }
+
+ text++;
+
+ if (*text != PNG_TEXT_COMPRESSION_zTXt) /* Check compression byte */
+ {
+ png_ptr->current_text = NULL;
+ png_free(png_ptr, key);
+ return;
+ }
+
+ text++;
+
+ png_ptr->zstream.next_in = (png_bytep )text;
+ png_ptr->zstream.avail_in = (uInt)(png_ptr->current_text_size -
+ (text - key));
+ png_ptr->zstream.next_out = png_ptr->zbuf;
+ png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size;
+
+ key_size = text - key;
+ text_size = 0;
+ text = NULL;
+ ret = Z_STREAM_END;
+
+ while (png_ptr->zstream.avail_in)
+ {
+ ret = inflate(&png_ptr->zstream, Z_PARTIAL_FLUSH);
+ if (ret != Z_OK && ret != Z_STREAM_END)
+ {
+ inflateReset(&png_ptr->zstream);
+ png_ptr->zstream.avail_in = 0;
+ png_ptr->current_text = NULL;
+ png_free(png_ptr, key);
+ png_free(png_ptr, text);
+ return;
+ }
+ if (!(png_ptr->zstream.avail_out) || ret == Z_STREAM_END)
+ {
+ if (text == NULL)
+ {
+ text = (png_charp)png_malloc(png_ptr,
+ (png_ptr->zbuf_size
+ - png_ptr->zstream.avail_out + key_size + 1));
+
+ png_memcpy(text + key_size, png_ptr->zbuf,
+ png_ptr->zbuf_size - png_ptr->zstream.avail_out);
+
+ png_memcpy(text, key, key_size);
+
+ text_size = key_size + png_ptr->zbuf_size -
+ png_ptr->zstream.avail_out;
+
+ *(text + text_size) = '\0';
+ }
+ else
+ {
+ png_charp tmp;
+
+ tmp = text;
+ text = (png_charp)png_malloc(png_ptr, text_size +
+ (png_ptr->zbuf_size
+ - png_ptr->zstream.avail_out + 1));
+
+ png_memcpy(text, tmp, text_size);
+ png_free(png_ptr, tmp);
+
+ png_memcpy(text + text_size, png_ptr->zbuf,
+ png_ptr->zbuf_size - png_ptr->zstream.avail_out);
+
+ text_size += png_ptr->zbuf_size - png_ptr->zstream.avail_out;
+ *(text + text_size) = '\0';
+ }
+ if (ret != Z_STREAM_END)
+ {
+ png_ptr->zstream.next_out = png_ptr->zbuf;
+ png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size;
+ }
+ }
+ else
+ {
+ break;
+ }
+
+ if (ret == Z_STREAM_END)
+ break;
+ }
+
+ inflateReset(&png_ptr->zstream);
+ png_ptr->zstream.avail_in = 0;
+
+ if (ret != Z_STREAM_END)
+ {
+ png_ptr->current_text = NULL;
+ png_free(png_ptr, key);
+ png_free(png_ptr, text);
+ return;
+ }
+
+ png_ptr->current_text = NULL;
+ png_free(png_ptr, key);
+ key = text;
+ text += key_size;
+
+ text_ptr = (png_textp)png_malloc(png_ptr,
+ png_sizeof(png_text));
+ text_ptr->compression = PNG_TEXT_COMPRESSION_zTXt;
+ text_ptr->key = key;
+#ifdef PNG_iTXt_SUPPORTED
+ text_ptr->lang = NULL;
+ text_ptr->lang_key = NULL;
+#endif
+ text_ptr->text = text;
+
+ ret = png_set_text_2(png_ptr, info_ptr, text_ptr, 1);
+
+ png_free(png_ptr, key);
+ png_free(png_ptr, text_ptr);
+
+ if (ret)
+ png_warning(png_ptr, "Insufficient memory to store text chunk");
+ }
+}
+#endif
+
+#ifdef PNG_READ_iTXt_SUPPORTED
+void /* PRIVATE */
+png_push_handle_iTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32
+ length)
+{
+ if (!(png_ptr->mode & PNG_HAVE_IHDR) || (png_ptr->mode & PNG_HAVE_IEND))
+ {
+ png_error(png_ptr, "Out of place iTXt");
+ info_ptr = info_ptr; /* To quiet some compiler warnings */
+ }
+
+#ifdef PNG_MAX_MALLOC_64K
+ png_ptr->skip_length = 0; /* This may not be necessary */
+
+ if (length > (png_uint_32)65535L) /* Can't hold entire string in memory */
+ {
+ png_warning(png_ptr, "iTXt chunk too large to fit in memory");
+ png_ptr->skip_length = length - (png_uint_32)65535L;
+ length = (png_uint_32)65535L;
+ }
+#endif
+
+ png_ptr->current_text = (png_charp)png_malloc(png_ptr,
+ (png_size_t)(length + 1));
+ png_ptr->current_text[length] = '\0';
+ png_ptr->current_text_ptr = png_ptr->current_text;
+ png_ptr->current_text_size = (png_size_t)length;
+ png_ptr->current_text_left = (png_size_t)length;
+ png_ptr->process_mode = PNG_READ_iTXt_MODE;
+}
+
+void /* PRIVATE */
+png_push_read_iTXt(png_structp png_ptr, png_infop info_ptr)
+{
+
+ if (png_ptr->buffer_size && png_ptr->current_text_left)
+ {
+ png_size_t text_size;
+
+ if (png_ptr->buffer_size < png_ptr->current_text_left)
+ text_size = png_ptr->buffer_size;
+
+ else
+ text_size = png_ptr->current_text_left;
+
+ png_crc_read(png_ptr, (png_bytep)png_ptr->current_text_ptr, text_size);
+ png_ptr->current_text_left -= text_size;
+ png_ptr->current_text_ptr += text_size;
+ }
+ if (!(png_ptr->current_text_left))
+ {
+ png_textp text_ptr;
+ png_charp key;
+ int comp_flag;
+ png_charp lang;
+ png_charp lang_key;
+ png_charp text;
+ int ret;
+
+ if (png_ptr->buffer_size < 4)
+ {
+ png_push_save_buffer(png_ptr);
+ return;
+ }
+
+ png_push_crc_finish(png_ptr);
+
+#ifdef PNG_MAX_MALLOC_64K
+ if (png_ptr->skip_length)
+ return;
+#endif
+
+ key = png_ptr->current_text;
+
+ for (lang = key; *lang; lang++)
+ /* Empty loop */ ;
+
+ if (lang < key + png_ptr->current_text_size - 3)
+ lang++;
+
+ comp_flag = *lang++;
+ lang++; /* Skip comp_type, always zero */
+
+ for (lang_key = lang; *lang_key; lang_key++)
+ /* Empty loop */ ;
+
+ lang_key++; /* Skip NUL separator */
+
+ text=lang_key;
+
+ if (lang_key < key + png_ptr->current_text_size - 1)
+ {
+ for (; *text; text++)
+ /* Empty loop */ ;
+ }
+
+ if (text < key + png_ptr->current_text_size)
+ text++;
+
+ text_ptr = (png_textp)png_malloc(png_ptr,
+ png_sizeof(png_text));
+
+ text_ptr->compression = comp_flag + 2;
+ text_ptr->key = key;
+ text_ptr->lang = lang;
+ text_ptr->lang_key = lang_key;
+ text_ptr->text = text;
+ text_ptr->text_length = 0;
+ text_ptr->itxt_length = png_strlen(text);
+
+ ret = png_set_text_2(png_ptr, info_ptr, text_ptr, 1);
+
+ png_ptr->current_text = NULL;
+
+ png_free(png_ptr, text_ptr);
+ if (ret)
+ png_warning(png_ptr, "Insufficient memory to store iTXt chunk");
+ }
+}
+#endif
+
+/* This function is called when we haven't found a handler for this
+ * chunk. If there isn't a problem with the chunk itself (ie a bad chunk
+ * name or a critical chunk), the chunk is (currently) silently ignored.
+ */
+void /* PRIVATE */
+png_push_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32
+ length)
+{
+ png_uint_32 skip = 0;
+
+ if (!(png_ptr->chunk_name[0] & 0x20))
+ {
+#ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
+ if (png_handle_as_unknown(png_ptr, png_ptr->chunk_name) !=
+ PNG_HANDLE_CHUNK_ALWAYS
+#ifdef PNG_READ_USER_CHUNKS_SUPPORTED
+ && png_ptr->read_user_chunk_fn == NULL
+#endif
+ )
+#endif
+ png_chunk_error(png_ptr, "unknown critical chunk");
+
+ info_ptr = info_ptr; /* To quiet some compiler warnings */
+ }
+
+#ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
+ if (png_ptr->flags & PNG_FLAG_KEEP_UNKNOWN_CHUNKS)
+ {
+#ifdef PNG_MAX_MALLOC_64K
+ if (length > (png_uint_32)65535L)
+ {
+ png_warning(png_ptr, "unknown chunk too large to fit in memory");
+ skip = length - (png_uint_32)65535L;
+ length = (png_uint_32)65535L;
+ }
+#endif
+ png_memcpy((png_charp)png_ptr->unknown_chunk.name,
+ (png_charp)png_ptr->chunk_name,
+ png_sizeof(png_ptr->unknown_chunk.name));
+ png_ptr->unknown_chunk.name[png_sizeof(png_ptr->unknown_chunk.name) - 1]
+ = '\0';
+
+ png_ptr->unknown_chunk.size = (png_size_t)length;
+
+ if (length == 0)
+ png_ptr->unknown_chunk.data = NULL;
+
+ else
+ {
+ png_ptr->unknown_chunk.data = (png_bytep)png_malloc(png_ptr,
+ (png_size_t)length);
+ png_crc_read(png_ptr, (png_bytep)png_ptr->unknown_chunk.data, length);
+ }
+
+#ifdef PNG_READ_USER_CHUNKS_SUPPORTED
+ if (png_ptr->read_user_chunk_fn != NULL)
+ {
+ /* Callback to user unknown chunk handler */
+ int ret;
+ ret = (*(png_ptr->read_user_chunk_fn))
+ (png_ptr, &png_ptr->unknown_chunk);
+
+ if (ret < 0)
+ png_chunk_error(png_ptr, "error in user chunk");
+
+ if (ret == 0)
+ {
+ if (!(png_ptr->chunk_name[0] & 0x20))
+ if (png_handle_as_unknown(png_ptr, png_ptr->chunk_name) !=
+ PNG_HANDLE_CHUNK_ALWAYS)
+ png_chunk_error(png_ptr, "unknown critical chunk");
+ png_set_unknown_chunks(png_ptr, info_ptr,
+ &png_ptr->unknown_chunk, 1);
+ }
+ }
+
+ else
+#endif
+ png_set_unknown_chunks(png_ptr, info_ptr, &png_ptr->unknown_chunk, 1);
+ png_free(png_ptr, png_ptr->unknown_chunk.data);
+ png_ptr->unknown_chunk.data = NULL;
+ }
+
+ else
+#endif
+ skip=length;
+ png_push_crc_skip(png_ptr, skip);
+}
+
+void /* PRIVATE */
+png_push_have_info(png_structp png_ptr, png_infop info_ptr)
+{
+ if (png_ptr->info_fn != NULL)
+ (*(png_ptr->info_fn))(png_ptr, info_ptr);
+}
+
+void /* PRIVATE */
+png_push_have_end(png_structp png_ptr, png_infop info_ptr)
+{
+ if (png_ptr->end_fn != NULL)
+ (*(png_ptr->end_fn))(png_ptr, info_ptr);
+}
+
+void /* PRIVATE */
+png_push_have_row(png_structp png_ptr, png_bytep row)
+{
+ if (png_ptr->row_fn != NULL)
+ (*(png_ptr->row_fn))(png_ptr, row, png_ptr->row_number,
+ (int)png_ptr->pass);
+}
+
+void PNGAPI
+png_progressive_combine_row (png_structp png_ptr,
+ png_bytep old_row, png_bytep new_row)
+{
+ PNG_CONST int FARDATA png_pass_dsp_mask[7] =
+ {0xff, 0x0f, 0xff, 0x33, 0xff, 0x55, 0xff};
+
+ if (png_ptr == NULL)
+ return;
+
+ if (new_row != NULL) /* new_row must == png_ptr->row_buf here. */
+ png_combine_row(png_ptr, old_row, png_pass_dsp_mask[png_ptr->pass]);
+}
+
+void PNGAPI
+png_set_progressive_read_fn(png_structp png_ptr, png_voidp progressive_ptr,
+ png_progressive_info_ptr info_fn, png_progressive_row_ptr row_fn,
+ png_progressive_end_ptr end_fn)
+{
+ if (png_ptr == NULL)
+ return;
+
+ png_ptr->info_fn = info_fn;
+ png_ptr->row_fn = row_fn;
+ png_ptr->end_fn = end_fn;
+
+ png_set_read_fn(png_ptr, progressive_ptr, png_push_fill_buffer);
+}
+
+png_voidp PNGAPI
+png_get_progressive_ptr(png_structp png_ptr)
+{
+ if (png_ptr == NULL)
+ return (NULL);
+
+ return png_ptr->io_ptr;
+}
+#endif /* PNG_PROGRESSIVE_READ_SUPPORTED */
diff --git a/src/3rdparty/libpng/pngpriv.h b/src/3rdparty/libpng/pngpriv.h
new file mode 100644
index 0000000..13c2b3f
--- /dev/null
+++ b/src/3rdparty/libpng/pngpriv.h
@@ -0,0 +1,955 @@
+
+/* pngpriv.h - private declarations for use inside libpng
+ *
+ * libpng version 1.4.0 - January 3, 2010
+ * For conditions of distribution and use, see copyright notice in png.h
+ * Copyright (c) 1998-2010 Glenn Randers-Pehrson
+ * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
+ * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ */
+
+/* The symbols declared in this file (including the functions declared
+ * as PNG_EXTERN) are PRIVATE. They are not part of the libpng public
+ * interface, and are not recommended for use by regular applications.
+ * Some of them may become public in the future; others may stay private,
+ * change in an incompatible way, or even disappear.
+ * Although the libpng users are not forbidden to include this header,
+ * they should be well aware of the issues that may arise from doing so.
+ */
+
+#ifndef PNGPRIV_H
+#define PNGPRIV_H
+
+#ifndef PNG_VERSION_INFO_ONLY
+
+#include <stdlib.h>
+
+/* The functions exported by PNG_EXTERN are internal functions, which
+ * aren't usually used outside the library (as far as I know), so it is
+ * debatable if they should be exported at all. In the future, when it
+ * is possible to have run-time registry of chunk-handling functions,
+ * some of these will be made available again.
+#define PNG_EXTERN extern
+ */
+#define PNG_EXTERN
+
+/* Other defines specific to compilers can go here. Try to keep
+ * them inside an appropriate ifdef/endif pair for portability.
+ */
+
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+# ifdef MACOS
+ /* We need to check that <math.h> hasn't already been included earlier
+ * as it seems it doesn't agree with <fp.h>, yet we should really use
+ * <fp.h> if possible.
+ */
+# if !defined(__MATH_H__) && !defined(__MATH_H) && !defined(__cmath__)
+# include <fp.h>
+# endif
+# else
+# include <math.h>
+# endif
+# if defined(_AMIGA) && defined(__SASC) && defined(_M68881)
+ /* Amiga SAS/C: We must include builtin FPU functions when compiling using
+ * MATH=68881
+ */
+# include <m68881.h>
+# endif
+#endif
+
+/* Codewarrior on NT has linking problems without this. */
+#if (defined(__MWERKS__) && defined(WIN32)) || defined(__STDC__)
+# define PNG_ALWAYS_EXTERN
+#endif
+
+/* This provides the non-ANSI (far) memory allocation routines. */
+#if defined(__TURBOC__) && defined(__MSDOS__)
+# include <mem.h>
+# include <alloc.h>
+#endif
+
+#if defined(WIN32) || defined(_Windows) || defined(_WINDOWS) || \
+ defined(_WIN32) || defined(__WIN32__)
+# include <windows.h> /* defines _WINDOWS_ macro */
+/* I have no idea why is this necessary... */
+# ifdef _MSC_VER
+# include <malloc.h>
+# endif
+#endif
+
+/* Various modes of operation. Note that after an init, mode is set to
+ * zero automatically when the structure is created.
+ */
+#define PNG_HAVE_IHDR 0x01
+#define PNG_HAVE_PLTE 0x02
+#define PNG_HAVE_IDAT 0x04
+#define PNG_AFTER_IDAT 0x08 /* Have complete zlib datastream */
+#define PNG_HAVE_IEND 0x10
+#define PNG_HAVE_gAMA 0x20
+#define PNG_HAVE_cHRM 0x40
+#define PNG_HAVE_sRGB 0x80
+#define PNG_HAVE_CHUNK_HEADER 0x100
+#define PNG_WROTE_tIME 0x200
+#define PNG_WROTE_INFO_BEFORE_PLTE 0x400
+#define PNG_BACKGROUND_IS_GRAY 0x800
+#define PNG_HAVE_PNG_SIGNATURE 0x1000
+#define PNG_HAVE_CHUNK_AFTER_IDAT 0x2000 /* Have another chunk after IDAT */
+
+/* Flags for the transformations the PNG library does on the image data */
+#define PNG_BGR 0x0001
+#define PNG_INTERLACE 0x0002
+#define PNG_PACK 0x0004
+#define PNG_SHIFT 0x0008
+#define PNG_SWAP_BYTES 0x0010
+#define PNG_INVERT_MONO 0x0020
+#define PNG_DITHER 0x0040
+#define PNG_BACKGROUND 0x0080
+#define PNG_BACKGROUND_EXPAND 0x0100
+ /* 0x0200 unused */
+#define PNG_16_TO_8 0x0400
+#define PNG_RGBA 0x0800
+#define PNG_EXPAND 0x1000
+#define PNG_GAMMA 0x2000
+#define PNG_GRAY_TO_RGB 0x4000
+#define PNG_FILLER 0x8000L
+#define PNG_PACKSWAP 0x10000L
+#define PNG_SWAP_ALPHA 0x20000L
+#define PNG_STRIP_ALPHA 0x40000L
+#define PNG_INVERT_ALPHA 0x80000L
+#define PNG_USER_TRANSFORM 0x100000L
+#define PNG_RGB_TO_GRAY_ERR 0x200000L
+#define PNG_RGB_TO_GRAY_WARN 0x400000L
+#define PNG_RGB_TO_GRAY 0x600000L /* two bits, RGB_TO_GRAY_ERR|WARN */
+ /* 0x800000L Unused */
+#define PNG_ADD_ALPHA 0x1000000L /* Added to libpng-1.2.7 */
+#define PNG_EXPAND_tRNS 0x2000000L /* Added to libpng-1.2.9 */
+ /* 0x4000000L unused */
+ /* 0x8000000L unused */
+ /* 0x10000000L unused */
+ /* 0x20000000L unused */
+ /* 0x40000000L unused */
+
+/* Flags for png_create_struct */
+#define PNG_STRUCT_PNG 0x0001
+#define PNG_STRUCT_INFO 0x0002
+
+/* Scaling factor for filter heuristic weighting calculations */
+#define PNG_WEIGHT_SHIFT 8
+#define PNG_WEIGHT_FACTOR (1<<(PNG_WEIGHT_SHIFT))
+#define PNG_COST_SHIFT 3
+#define PNG_COST_FACTOR (1<<(PNG_COST_SHIFT))
+
+/* Flags for the png_ptr->flags rather than declaring a byte for each one */
+#define PNG_FLAG_ZLIB_CUSTOM_STRATEGY 0x0001
+#define PNG_FLAG_ZLIB_CUSTOM_LEVEL 0x0002
+#define PNG_FLAG_ZLIB_CUSTOM_MEM_LEVEL 0x0004
+#define PNG_FLAG_ZLIB_CUSTOM_WINDOW_BITS 0x0008
+#define PNG_FLAG_ZLIB_CUSTOM_METHOD 0x0010
+#define PNG_FLAG_ZLIB_FINISHED 0x0020
+#define PNG_FLAG_ROW_INIT 0x0040
+#define PNG_FLAG_FILLER_AFTER 0x0080
+#define PNG_FLAG_CRC_ANCILLARY_USE 0x0100
+#define PNG_FLAG_CRC_ANCILLARY_NOWARN 0x0200
+#define PNG_FLAG_CRC_CRITICAL_USE 0x0400
+#define PNG_FLAG_CRC_CRITICAL_IGNORE 0x0800
+ /* 0x1000 unused */
+ /* 0x2000 unused */
+ /* 0x4000 unused */
+#define PNG_FLAG_KEEP_UNKNOWN_CHUNKS 0x8000L
+#define PNG_FLAG_KEEP_UNSAFE_CHUNKS 0x10000L
+#define PNG_FLAG_LIBRARY_MISMATCH 0x20000L
+#define PNG_FLAG_STRIP_ERROR_NUMBERS 0x40000L
+#define PNG_FLAG_STRIP_ERROR_TEXT 0x80000L
+#define PNG_FLAG_MALLOC_NULL_MEM_OK 0x100000L
+#define PNG_FLAG_ADD_ALPHA 0x200000L /* Added to libpng-1.2.8 */
+#define PNG_FLAG_STRIP_ALPHA 0x400000L /* Added to libpng-1.2.8 */
+#define PNG_FLAG_BENIGN_ERRORS_WARN 0x800000L /* Added to libpng-1.4.0 */
+ /* 0x1000000L unused */
+ /* 0x2000000L unused */
+ /* 0x4000000L unused */
+ /* 0x8000000L unused */
+ /* 0x10000000L unused */
+ /* 0x20000000L unused */
+ /* 0x40000000L unused */
+
+#define PNG_FLAG_CRC_ANCILLARY_MASK (PNG_FLAG_CRC_ANCILLARY_USE | \
+ PNG_FLAG_CRC_ANCILLARY_NOWARN)
+
+#define PNG_FLAG_CRC_CRITICAL_MASK (PNG_FLAG_CRC_CRITICAL_USE | \
+ PNG_FLAG_CRC_CRITICAL_IGNORE)
+
+#define PNG_FLAG_CRC_MASK (PNG_FLAG_CRC_ANCILLARY_MASK | \
+ PNG_FLAG_CRC_CRITICAL_MASK)
+
+/* Save typing and make code easier to understand */
+
+#define PNG_COLOR_DIST(c1, c2) (abs((int)((c1).red) - (int)((c2).red)) + \
+ abs((int)((c1).green) - (int)((c2).green)) + \
+ abs((int)((c1).blue) - (int)((c2).blue)))
+
+/* Added to libpng-1.2.6 JB */
+#define PNG_ROWBYTES(pixel_bits, width) \
+ ((pixel_bits) >= 8 ? \
+ ((png_size_t)(width) * (((png_size_t)(pixel_bits)) >> 3)) : \
+ (( ((png_size_t)(width) * ((png_size_t)(pixel_bits))) + 7) >> 3) )
+
+/* PNG_OUT_OF_RANGE returns true if value is outside the range
+ * ideal-delta..ideal+delta. Each argument is evaluated twice.
+ * "ideal" and "delta" should be constants, normally simple
+ * integers, "value" a variable. Added to libpng-1.2.6 JB
+ */
+#define PNG_OUT_OF_RANGE(value, ideal, delta) \
+ ( (value) < (ideal)-(delta) || (value) > (ideal)+(delta) )
+
+/* Constant strings for known chunk types. If you need to add a chunk,
+ * define the name here, and add an invocation of the macro wherever it's
+ * needed.
+ */
+#define PNG_IHDR PNG_CONST png_byte png_IHDR[5] = { 73, 72, 68, 82, '\0'}
+#define PNG_IDAT PNG_CONST png_byte png_IDAT[5] = { 73, 68, 65, 84, '\0'}
+#define PNG_IEND PNG_CONST png_byte png_IEND[5] = { 73, 69, 78, 68, '\0'}
+#define PNG_PLTE PNG_CONST png_byte png_PLTE[5] = { 80, 76, 84, 69, '\0'}
+#define PNG_bKGD PNG_CONST png_byte png_bKGD[5] = { 98, 75, 71, 68, '\0'}
+#define PNG_cHRM PNG_CONST png_byte png_cHRM[5] = { 99, 72, 82, 77, '\0'}
+#define PNG_gAMA PNG_CONST png_byte png_gAMA[5] = {103, 65, 77, 65, '\0'}
+#define PNG_hIST PNG_CONST png_byte png_hIST[5] = {104, 73, 83, 84, '\0'}
+#define PNG_iCCP PNG_CONST png_byte png_iCCP[5] = {105, 67, 67, 80, '\0'}
+#define PNG_iTXt PNG_CONST png_byte png_iTXt[5] = {105, 84, 88, 116, '\0'}
+#define PNG_oFFs PNG_CONST png_byte png_oFFs[5] = {111, 70, 70, 115, '\0'}
+#define PNG_pCAL PNG_CONST png_byte png_pCAL[5] = {112, 67, 65, 76, '\0'}
+#define PNG_sCAL PNG_CONST png_byte png_sCAL[5] = {115, 67, 65, 76, '\0'}
+#define PNG_pHYs PNG_CONST png_byte png_pHYs[5] = {112, 72, 89, 115, '\0'}
+#define PNG_sBIT PNG_CONST png_byte png_sBIT[5] = {115, 66, 73, 84, '\0'}
+#define PNG_sPLT PNG_CONST png_byte png_sPLT[5] = {115, 80, 76, 84, '\0'}
+#define PNG_sRGB PNG_CONST png_byte png_sRGB[5] = {115, 82, 71, 66, '\0'}
+#define PNG_sTER PNG_CONST png_byte png_sTER[5] = {115, 84, 69, 82, '\0'}
+#define PNG_tEXt PNG_CONST png_byte png_tEXt[5] = {116, 69, 88, 116, '\0'}
+#define PNG_tIME PNG_CONST png_byte png_tIME[5] = {116, 73, 77, 69, '\0'}
+#define PNG_tRNS PNG_CONST png_byte png_tRNS[5] = {116, 82, 78, 83, '\0'}
+#define PNG_zTXt PNG_CONST png_byte png_zTXt[5] = {122, 84, 88, 116, '\0'}
+
+
+/* Inhibit C++ name-mangling for libpng functions but not for system calls. */
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+/* These functions are used internally in the code. They generally
+ * shouldn't be used unless you are writing code to add or replace some
+ * functionality in libpng. More information about most functions can
+ * be found in the files where the functions are located.
+ */
+
+/* Allocate memory for an internal libpng struct */
+PNG_EXTERN png_voidp png_create_struct PNGARG((int type));
+
+/* Free memory from internal libpng struct */
+PNG_EXTERN void png_destroy_struct PNGARG((png_voidp struct_ptr));
+
+PNG_EXTERN png_voidp png_create_struct_2 PNGARG((int type, png_malloc_ptr
+ malloc_fn, png_voidp mem_ptr));
+PNG_EXTERN void png_destroy_struct_2 PNGARG((png_voidp struct_ptr,
+ png_free_ptr free_fn, png_voidp mem_ptr));
+
+/* Free any memory that info_ptr points to and reset struct. */
+PNG_EXTERN void png_info_destroy PNGARG((png_structp png_ptr,
+ png_infop info_ptr));
+
+/* Function to allocate memory for zlib. PNGAPI is disallowed. */
+PNG_EXTERN voidpf png_zalloc PNGARG((voidpf png_ptr, uInt items, uInt size));
+
+/* Function to free memory for zlib. PNGAPI is disallowed. */
+PNG_EXTERN void png_zfree PNGARG((voidpf png_ptr, voidpf ptr));
+
+/* Next four functions are used internally as callbacks. PNGAPI is required
+ * but not PNG_EXPORT. PNGAPI added at libpng version 1.2.3. */
+
+PNG_EXTERN void PNGAPI png_default_read_data PNGARG((png_structp png_ptr,
+ png_bytep data, png_size_t length));
+
+#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
+PNG_EXTERN void PNGAPI png_push_fill_buffer PNGARG((png_structp png_ptr,
+ png_bytep buffer, png_size_t length));
+#endif
+
+PNG_EXTERN void PNGAPI png_default_write_data PNGARG((png_structp png_ptr,
+ png_bytep data, png_size_t length));
+
+#ifdef PNG_WRITE_FLUSH_SUPPORTED
+#ifdef PNG_STDIO_SUPPORTED
+PNG_EXTERN void PNGAPI png_default_flush PNGARG((png_structp png_ptr));
+#endif
+#endif
+
+/* Reset the CRC variable */
+PNG_EXTERN void png_reset_crc PNGARG((png_structp png_ptr));
+
+/* Write the "data" buffer to whatever output you are using */
+PNG_EXTERN void png_write_data PNGARG((png_structp png_ptr, png_bytep data,
+ png_size_t length));
+
+/* Read the chunk header (length + type name) */
+PNG_EXTERN png_uint_32 png_read_chunk_header PNGARG((png_structp png_ptr));
+
+/* Read data from whatever input you are using into the "data" buffer */
+PNG_EXTERN void png_read_data PNGARG((png_structp png_ptr, png_bytep data,
+ png_size_t length));
+
+/* Read bytes into buf, and update png_ptr->crc */
+PNG_EXTERN void png_crc_read PNGARG((png_structp png_ptr, png_bytep buf,
+ png_size_t length));
+
+/* Decompress data in a chunk that uses compression */
+#if defined(PNG_zTXt_SUPPORTED) || defined(PNG_iTXt_SUPPORTED) || \
+ defined(PNG_iCCP_SUPPORTED) || defined(PNG_sPLT_SUPPORTED)
+PNG_EXTERN void png_decompress_chunk PNGARG((png_structp png_ptr,
+ int comp_type, png_size_t chunklength, png_size_t prefix_length,
+ png_size_t *data_length));
+#endif
+
+/* Read "skip" bytes, read the file crc, and (optionally) verify png_ptr->crc */
+PNG_EXTERN int png_crc_finish PNGARG((png_structp png_ptr, png_uint_32 skip));
+
+/* Read the CRC from the file and compare it to the libpng calculated CRC */
+PNG_EXTERN int png_crc_error PNGARG((png_structp png_ptr));
+
+/* Calculate the CRC over a section of data. Note that we are only
+ * passing a maximum of 64K on systems that have this as a memory limit,
+ * since this is the maximum buffer size we can specify.
+ */
+PNG_EXTERN void png_calculate_crc PNGARG((png_structp png_ptr, png_bytep ptr,
+ png_size_t length));
+
+#ifdef PNG_WRITE_FLUSH_SUPPORTED
+PNG_EXTERN void png_flush PNGARG((png_structp png_ptr));
+#endif
+
+/* Write various chunks */
+
+/* Write the IHDR chunk, and update the png_struct with the necessary
+ * information.
+ */
+PNG_EXTERN void png_write_IHDR PNGARG((png_structp png_ptr, png_uint_32 width,
+ png_uint_32 height,
+ int bit_depth, int color_type, int compression_method, int filter_method,
+ int interlace_method));
+
+PNG_EXTERN void png_write_PLTE PNGARG((png_structp png_ptr, png_colorp palette,
+ png_uint_32 num_pal));
+
+PNG_EXTERN void png_write_IDAT PNGARG((png_structp png_ptr, png_bytep data,
+ png_size_t length));
+
+PNG_EXTERN void png_write_IEND PNGARG((png_structp png_ptr));
+
+#ifdef PNG_WRITE_gAMA_SUPPORTED
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+PNG_EXTERN void png_write_gAMA PNGARG((png_structp png_ptr, double file_gamma));
+#endif
+#ifdef PNG_FIXED_POINT_SUPPORTED
+PNG_EXTERN void png_write_gAMA_fixed PNGARG((png_structp png_ptr, png_fixed_point
+ file_gamma));
+#endif
+#endif
+
+#ifdef PNG_WRITE_sBIT_SUPPORTED
+PNG_EXTERN void png_write_sBIT PNGARG((png_structp png_ptr, png_color_8p sbit,
+ int color_type));
+#endif
+
+#ifdef PNG_WRITE_cHRM_SUPPORTED
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+PNG_EXTERN void png_write_cHRM PNGARG((png_structp png_ptr,
+ double white_x, double white_y,
+ double red_x, double red_y, double green_x, double green_y,
+ double blue_x, double blue_y));
+#endif
+PNG_EXTERN void png_write_cHRM_fixed PNGARG((png_structp png_ptr,
+ png_fixed_point int_white_x, png_fixed_point int_white_y,
+ png_fixed_point int_red_x, png_fixed_point int_red_y, png_fixed_point
+ int_green_x, png_fixed_point int_green_y, png_fixed_point int_blue_x,
+ png_fixed_point int_blue_y));
+#endif
+
+#ifdef PNG_WRITE_sRGB_SUPPORTED
+PNG_EXTERN void png_write_sRGB PNGARG((png_structp png_ptr,
+ int intent));
+#endif
+
+#ifdef PNG_WRITE_iCCP_SUPPORTED
+PNG_EXTERN void png_write_iCCP PNGARG((png_structp png_ptr,
+ png_charp name, int compression_type,
+ png_charp profile, int proflen));
+ /* Note to maintainer: profile should be png_bytep */
+#endif
+
+#ifdef PNG_WRITE_sPLT_SUPPORTED
+PNG_EXTERN void png_write_sPLT PNGARG((png_structp png_ptr,
+ png_sPLT_tp palette));
+#endif
+
+#ifdef PNG_WRITE_tRNS_SUPPORTED
+PNG_EXTERN void png_write_tRNS PNGARG((png_structp png_ptr, png_bytep trans,
+ png_color_16p values, int number, int color_type));
+#endif
+
+#ifdef PNG_WRITE_bKGD_SUPPORTED
+PNG_EXTERN void png_write_bKGD PNGARG((png_structp png_ptr,
+ png_color_16p values, int color_type));
+#endif
+
+#ifdef PNG_WRITE_hIST_SUPPORTED
+PNG_EXTERN void png_write_hIST PNGARG((png_structp png_ptr, png_uint_16p hist,
+ int num_hist));
+#endif
+
+#if defined(PNG_WRITE_TEXT_SUPPORTED) || defined(PNG_WRITE_pCAL_SUPPORTED) || \
+ defined(PNG_WRITE_iCCP_SUPPORTED) || defined(PNG_WRITE_sPLT_SUPPORTED)
+PNG_EXTERN png_size_t png_check_keyword PNGARG((png_structp png_ptr,
+ png_charp key, png_charpp new_key));
+#endif
+
+#ifdef PNG_WRITE_tEXt_SUPPORTED
+PNG_EXTERN void png_write_tEXt PNGARG((png_structp png_ptr, png_charp key,
+ png_charp text, png_size_t text_len));
+#endif
+
+#ifdef PNG_WRITE_zTXt_SUPPORTED
+PNG_EXTERN void png_write_zTXt PNGARG((png_structp png_ptr, png_charp key,
+ png_charp text, png_size_t text_len, int compression));
+#endif
+
+#ifdef PNG_WRITE_iTXt_SUPPORTED
+PNG_EXTERN void png_write_iTXt PNGARG((png_structp png_ptr,
+ int compression, png_charp key, png_charp lang, png_charp lang_key,
+ png_charp text));
+#endif
+
+#ifdef PNG_TEXT_SUPPORTED /* Added at version 1.0.14 and 1.2.4 */
+PNG_EXTERN int png_set_text_2 PNGARG((png_structp png_ptr,
+ png_infop info_ptr, png_textp text_ptr, int num_text));
+#endif
+
+#ifdef PNG_WRITE_oFFs_SUPPORTED
+PNG_EXTERN void png_write_oFFs PNGARG((png_structp png_ptr,
+ png_int_32 x_offset, png_int_32 y_offset, int unit_type));
+#endif
+
+#ifdef PNG_WRITE_pCAL_SUPPORTED
+PNG_EXTERN void png_write_pCAL PNGARG((png_structp png_ptr, png_charp purpose,
+ png_int_32 X0, png_int_32 X1, int type, int nparams,
+ png_charp units, png_charpp params));
+#endif
+
+#ifdef PNG_WRITE_pHYs_SUPPORTED
+PNG_EXTERN void png_write_pHYs PNGARG((png_structp png_ptr,
+ png_uint_32 x_pixels_per_unit, png_uint_32 y_pixels_per_unit,
+ int unit_type));
+#endif
+
+#ifdef PNG_WRITE_tIME_SUPPORTED
+PNG_EXTERN void png_write_tIME PNGARG((png_structp png_ptr,
+ png_timep mod_time));
+#endif
+
+#ifdef PNG_WRITE_sCAL_SUPPORTED
+#if defined(PNG_FLOATING_POINT_SUPPORTED) && defined(PNG_STDIO_SUPPORTED)
+PNG_EXTERN void png_write_sCAL PNGARG((png_structp png_ptr,
+ int unit, double width, double height));
+#else
+#ifdef PNG_FIXED_POINT_SUPPORTED
+PNG_EXTERN void png_write_sCAL_s PNGARG((png_structp png_ptr,
+ int unit, png_charp width, png_charp height));
+#endif
+#endif
+#endif
+
+/* Called when finished processing a row of data */
+PNG_EXTERN void png_write_finish_row PNGARG((png_structp png_ptr));
+
+/* Internal use only. Called before first row of data */
+PNG_EXTERN void png_write_start_row PNGARG((png_structp png_ptr));
+
+#ifdef PNG_READ_GAMMA_SUPPORTED
+PNG_EXTERN void png_build_gamma_table PNGARG((png_structp png_ptr,
+ png_byte bit_depth));
+#endif
+
+/* Combine a row of data, dealing with alpha, etc. if requested */
+PNG_EXTERN void png_combine_row PNGARG((png_structp png_ptr, png_bytep row,
+ int mask));
+
+#ifdef PNG_READ_INTERLACING_SUPPORTED
+/* Expand an interlaced row */
+/* OLD pre-1.0.9 interface:
+PNG_EXTERN void png_do_read_interlace PNGARG((png_row_infop row_info,
+ png_bytep row, int pass, png_uint_32 transformations));
+ */
+PNG_EXTERN void png_do_read_interlace PNGARG((png_structp png_ptr));
+#endif
+
+/* GRR TO DO (2.0 or whenever): simplify other internal calling interfaces */
+
+#ifdef PNG_WRITE_INTERLACING_SUPPORTED
+/* Grab pixels out of a row for an interlaced pass */
+PNG_EXTERN void png_do_write_interlace PNGARG((png_row_infop row_info,
+ png_bytep row, int pass));
+#endif
+
+/* Unfilter a row */
+PNG_EXTERN void png_read_filter_row PNGARG((png_structp png_ptr,
+ png_row_infop row_info, png_bytep row, png_bytep prev_row, int filter));
+
+/* Choose the best filter to use and filter the row data */
+PNG_EXTERN void png_write_find_filter PNGARG((png_structp png_ptr,
+ png_row_infop row_info));
+
+/* Write out the filtered row. */
+PNG_EXTERN void png_write_filtered_row PNGARG((png_structp png_ptr,
+ png_bytep filtered_row));
+/* Finish a row while reading, dealing with interlacing passes, etc. */
+PNG_EXTERN void png_read_finish_row PNGARG((png_structp png_ptr));
+
+/* Initialize the row buffers, etc. */
+PNG_EXTERN void png_read_start_row PNGARG((png_structp png_ptr));
+/* Optional call to update the users info structure */
+PNG_EXTERN void png_read_transform_info PNGARG((png_structp png_ptr,
+ png_infop info_ptr));
+
+/* These are the functions that do the transformations */
+#ifdef PNG_READ_FILLER_SUPPORTED
+PNG_EXTERN void png_do_read_filler PNGARG((png_row_infop row_info,
+ png_bytep row, png_uint_32 filler, png_uint_32 flags));
+#endif
+
+#ifdef PNG_READ_SWAP_ALPHA_SUPPORTED
+PNG_EXTERN void png_do_read_swap_alpha PNGARG((png_row_infop row_info,
+ png_bytep row));
+#endif
+
+#ifdef PNG_WRITE_SWAP_ALPHA_SUPPORTED
+PNG_EXTERN void png_do_write_swap_alpha PNGARG((png_row_infop row_info,
+ png_bytep row));
+#endif
+
+#ifdef PNG_READ_INVERT_ALPHA_SUPPORTED
+PNG_EXTERN void png_do_read_invert_alpha PNGARG((png_row_infop row_info,
+ png_bytep row));
+#endif
+
+#ifdef PNG_WRITE_INVERT_ALPHA_SUPPORTED
+PNG_EXTERN void png_do_write_invert_alpha PNGARG((png_row_infop row_info,
+ png_bytep row));
+#endif
+
+#if defined(PNG_WRITE_FILLER_SUPPORTED) || \
+ defined(PNG_READ_STRIP_ALPHA_SUPPORTED)
+PNG_EXTERN void png_do_strip_filler PNGARG((png_row_infop row_info,
+ png_bytep row, png_uint_32 flags));
+#endif
+
+#if defined(PNG_READ_SWAP_SUPPORTED) || defined(PNG_WRITE_SWAP_SUPPORTED)
+PNG_EXTERN void png_do_swap PNGARG((png_row_infop row_info, png_bytep row));
+#endif
+
+#if defined(PNG_READ_PACKSWAP_SUPPORTED) || defined(PNG_WRITE_PACKSWAP_SUPPORTED)
+PNG_EXTERN void png_do_packswap PNGARG((png_row_infop row_info, png_bytep row));
+#endif
+
+#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
+PNG_EXTERN int png_do_rgb_to_gray PNGARG((png_structp png_ptr, png_row_infop
+ row_info, png_bytep row));
+#endif
+
+#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED
+PNG_EXTERN void png_do_gray_to_rgb PNGARG((png_row_infop row_info,
+ png_bytep row));
+#endif
+
+#ifdef PNG_READ_PACK_SUPPORTED
+PNG_EXTERN void png_do_unpack PNGARG((png_row_infop row_info, png_bytep row));
+#endif
+
+#ifdef PNG_READ_SHIFT_SUPPORTED
+PNG_EXTERN void png_do_unshift PNGARG((png_row_infop row_info, png_bytep row,
+ png_color_8p sig_bits));
+#endif
+
+#if defined(PNG_READ_INVERT_SUPPORTED) || defined(PNG_WRITE_INVERT_SUPPORTED)
+PNG_EXTERN void png_do_invert PNGARG((png_row_infop row_info, png_bytep row));
+#endif
+
+#ifdef PNG_READ_16_TO_8_SUPPORTED
+PNG_EXTERN void png_do_chop PNGARG((png_row_infop row_info, png_bytep row));
+#endif
+
+#ifdef PNG_READ_DITHER_SUPPORTED
+PNG_EXTERN void png_do_dither PNGARG((png_row_infop row_info,
+ png_bytep row, png_bytep palette_lookup, png_bytep dither_lookup));
+
+# ifdef PNG_CORRECT_PALETTE_SUPPORTED
+PNG_EXTERN void png_correct_palette PNGARG((png_structp png_ptr,
+ png_colorp palette, int num_palette));
+# endif
+#endif
+
+#if defined(PNG_READ_BGR_SUPPORTED) || defined(PNG_WRITE_BGR_SUPPORTED)
+PNG_EXTERN void png_do_bgr PNGARG((png_row_infop row_info, png_bytep row));
+#endif
+
+#ifdef PNG_WRITE_PACK_SUPPORTED
+PNG_EXTERN void png_do_pack PNGARG((png_row_infop row_info,
+ png_bytep row, png_uint_32 bit_depth));
+#endif
+
+#ifdef PNG_WRITE_SHIFT_SUPPORTED
+PNG_EXTERN void png_do_shift PNGARG((png_row_infop row_info, png_bytep row,
+ png_color_8p bit_depth));
+#endif
+
+#ifdef PNG_READ_BACKGROUND_SUPPORTED
+#ifdef PNG_READ_GAMMA_SUPPORTED
+PNG_EXTERN void png_do_background PNGARG((png_row_infop row_info, png_bytep row,
+ png_color_16p trans_color, png_color_16p background,
+ png_color_16p background_1,
+ png_bytep gamma_table, png_bytep gamma_from_1, png_bytep gamma_to_1,
+ png_uint_16pp gamma_16, png_uint_16pp gamma_16_from_1,
+ png_uint_16pp gamma_16_to_1, int gamma_shift));
+#else
+PNG_EXTERN void png_do_background PNGARG((png_row_infop row_info, png_bytep row,
+ png_color_16p trans_color, png_color_16p background));
+#endif
+#endif
+
+#ifdef PNG_READ_GAMMA_SUPPORTED
+PNG_EXTERN void png_do_gamma PNGARG((png_row_infop row_info, png_bytep row,
+ png_bytep gamma_table, png_uint_16pp gamma_16_table,
+ int gamma_shift));
+#endif
+
+#ifdef PNG_READ_EXPAND_SUPPORTED
+PNG_EXTERN void png_do_expand_palette PNGARG((png_row_infop row_info,
+ png_bytep row, png_colorp palette, png_bytep trans, int num_trans));
+PNG_EXTERN void png_do_expand PNGARG((png_row_infop row_info,
+ png_bytep row, png_color_16p trans_value));
+#endif
+
+/* The following decodes the appropriate chunks, and does error correction,
+ * then calls the appropriate callback for the chunk if it is valid.
+ */
+
+/* Decode the IHDR chunk */
+PNG_EXTERN void png_handle_IHDR PNGARG((png_structp png_ptr, png_infop info_ptr,
+ png_uint_32 length));
+PNG_EXTERN void png_handle_PLTE PNGARG((png_structp png_ptr, png_infop info_ptr,
+ png_uint_32 length));
+PNG_EXTERN void png_handle_IEND PNGARG((png_structp png_ptr, png_infop info_ptr,
+ png_uint_32 length));
+
+#ifdef PNG_READ_bKGD_SUPPORTED
+PNG_EXTERN void png_handle_bKGD PNGARG((png_structp png_ptr, png_infop info_ptr,
+ png_uint_32 length));
+#endif
+
+#ifdef PNG_READ_cHRM_SUPPORTED
+PNG_EXTERN void png_handle_cHRM PNGARG((png_structp png_ptr, png_infop info_ptr,
+ png_uint_32 length));
+#endif
+
+#ifdef PNG_READ_gAMA_SUPPORTED
+PNG_EXTERN void png_handle_gAMA PNGARG((png_structp png_ptr, png_infop info_ptr,
+ png_uint_32 length));
+#endif
+
+#ifdef PNG_READ_hIST_SUPPORTED
+PNG_EXTERN void png_handle_hIST PNGARG((png_structp png_ptr, png_infop info_ptr,
+ png_uint_32 length));
+#endif
+
+#ifdef PNG_READ_iCCP_SUPPORTED
+extern void png_handle_iCCP PNGARG((png_structp png_ptr, png_infop info_ptr,
+ png_uint_32 length));
+#endif /* PNG_READ_iCCP_SUPPORTED */
+
+#ifdef PNG_READ_iTXt_SUPPORTED
+PNG_EXTERN void png_handle_iTXt PNGARG((png_structp png_ptr, png_infop info_ptr,
+ png_uint_32 length));
+#endif
+
+#ifdef PNG_READ_oFFs_SUPPORTED
+PNG_EXTERN void png_handle_oFFs PNGARG((png_structp png_ptr, png_infop info_ptr,
+ png_uint_32 length));
+#endif
+
+#ifdef PNG_READ_pCAL_SUPPORTED
+PNG_EXTERN void png_handle_pCAL PNGARG((png_structp png_ptr, png_infop info_ptr,
+ png_uint_32 length));
+#endif
+
+#ifdef PNG_READ_pHYs_SUPPORTED
+PNG_EXTERN void png_handle_pHYs PNGARG((png_structp png_ptr, png_infop info_ptr,
+ png_uint_32 length));
+#endif
+
+#ifdef PNG_READ_sBIT_SUPPORTED
+PNG_EXTERN void png_handle_sBIT PNGARG((png_structp png_ptr, png_infop info_ptr,
+ png_uint_32 length));
+#endif
+
+#ifdef PNG_READ_sCAL_SUPPORTED
+PNG_EXTERN void png_handle_sCAL PNGARG((png_structp png_ptr, png_infop info_ptr,
+ png_uint_32 length));
+#endif
+
+#ifdef PNG_READ_sPLT_SUPPORTED
+extern void png_handle_sPLT PNGARG((png_structp png_ptr, png_infop info_ptr,
+ png_uint_32 length));
+#endif /* PNG_READ_sPLT_SUPPORTED */
+
+#ifdef PNG_READ_sRGB_SUPPORTED
+PNG_EXTERN void png_handle_sRGB PNGARG((png_structp png_ptr, png_infop info_ptr,
+ png_uint_32 length));
+#endif
+
+#ifdef PNG_READ_tEXt_SUPPORTED
+PNG_EXTERN void png_handle_tEXt PNGARG((png_structp png_ptr, png_infop info_ptr,
+ png_uint_32 length));
+#endif
+
+#ifdef PNG_READ_tIME_SUPPORTED
+PNG_EXTERN void png_handle_tIME PNGARG((png_structp png_ptr, png_infop info_ptr,
+ png_uint_32 length));
+#endif
+
+#ifdef PNG_READ_tRNS_SUPPORTED
+PNG_EXTERN void png_handle_tRNS PNGARG((png_structp png_ptr, png_infop info_ptr,
+ png_uint_32 length));
+#endif
+
+#ifdef PNG_READ_zTXt_SUPPORTED
+PNG_EXTERN void png_handle_zTXt PNGARG((png_structp png_ptr, png_infop info_ptr,
+ png_uint_32 length));
+#endif
+
+PNG_EXTERN void png_handle_unknown PNGARG((png_structp png_ptr,
+ png_infop info_ptr, png_uint_32 length));
+
+PNG_EXTERN void png_check_chunk_name PNGARG((png_structp png_ptr,
+ png_bytep chunk_name));
+
+/* Handle the transformations for reading and writing */
+PNG_EXTERN void png_do_read_transformations PNGARG((png_structp png_ptr));
+PNG_EXTERN void png_do_write_transformations PNGARG((png_structp png_ptr));
+
+PNG_EXTERN void png_init_read_transformations PNGARG((png_structp png_ptr));
+
+#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
+PNG_EXTERN void png_push_read_chunk PNGARG((png_structp png_ptr,
+ png_infop info_ptr));
+PNG_EXTERN void png_push_read_sig PNGARG((png_structp png_ptr,
+ png_infop info_ptr));
+PNG_EXTERN void png_push_check_crc PNGARG((png_structp png_ptr));
+PNG_EXTERN void png_push_crc_skip PNGARG((png_structp png_ptr,
+ png_uint_32 length));
+PNG_EXTERN void png_push_crc_finish PNGARG((png_structp png_ptr));
+PNG_EXTERN void png_push_save_buffer PNGARG((png_structp png_ptr));
+PNG_EXTERN void png_push_restore_buffer PNGARG((png_structp png_ptr,
+ png_bytep buffer, png_size_t buffer_length));
+PNG_EXTERN void png_push_read_IDAT PNGARG((png_structp png_ptr));
+PNG_EXTERN void png_process_IDAT_data PNGARG((png_structp png_ptr,
+ png_bytep buffer, png_size_t buffer_length));
+PNG_EXTERN void png_push_process_row PNGARG((png_structp png_ptr));
+PNG_EXTERN void png_push_handle_unknown PNGARG((png_structp png_ptr,
+ png_infop info_ptr, png_uint_32 length));
+PNG_EXTERN void png_push_have_info PNGARG((png_structp png_ptr,
+ png_infop info_ptr));
+PNG_EXTERN void png_push_have_end PNGARG((png_structp png_ptr,
+ png_infop info_ptr));
+PNG_EXTERN void png_push_have_row PNGARG((png_structp png_ptr, png_bytep row));
+PNG_EXTERN void png_push_read_end PNGARG((png_structp png_ptr,
+ png_infop info_ptr));
+PNG_EXTERN void png_process_some_data PNGARG((png_structp png_ptr,
+ png_infop info_ptr));
+PNG_EXTERN void png_read_push_finish_row PNGARG((png_structp png_ptr));
+#ifdef PNG_READ_tEXt_SUPPORTED
+PNG_EXTERN void png_push_handle_tEXt PNGARG((png_structp png_ptr,
+ png_infop info_ptr, png_uint_32 length));
+PNG_EXTERN void png_push_read_tEXt PNGARG((png_structp png_ptr,
+ png_infop info_ptr));
+#endif
+#ifdef PNG_READ_zTXt_SUPPORTED
+PNG_EXTERN void png_push_handle_zTXt PNGARG((png_structp png_ptr,
+ png_infop info_ptr, png_uint_32 length));
+PNG_EXTERN void png_push_read_zTXt PNGARG((png_structp png_ptr,
+ png_infop info_ptr));
+#endif
+#ifdef PNG_READ_iTXt_SUPPORTED
+PNG_EXTERN void png_push_handle_iTXt PNGARG((png_structp png_ptr,
+ png_infop info_ptr, png_uint_32 length));
+PNG_EXTERN void png_push_read_iTXt PNGARG((png_structp png_ptr,
+ png_infop info_ptr));
+#endif
+
+#endif /* PNG_PROGRESSIVE_READ_SUPPORTED */
+
+#ifdef PNG_MNG_FEATURES_SUPPORTED
+PNG_EXTERN void png_do_read_intrapixel PNGARG((png_row_infop row_info,
+ png_bytep row));
+PNG_EXTERN void png_do_write_intrapixel PNGARG((png_row_infop row_info,
+ png_bytep row));
+#endif
+
+/* Added at libpng version 1.4.0 */
+#ifdef PNG_cHRM_SUPPORTED
+PNG_EXTERN int png_check_cHRM_fixed PNGARG((png_structp png_ptr,
+ png_fixed_point int_white_x, png_fixed_point int_white_y,
+ png_fixed_point int_red_x, png_fixed_point int_red_y, png_fixed_point
+ int_green_x, png_fixed_point int_green_y, png_fixed_point int_blue_x,
+ png_fixed_point int_blue_y));
+#endif
+
+#ifdef PNG_cHRM_SUPPORTED
+#ifdef PNG_CHECK_cHRM_SUPPORTED
+/* Added at libpng version 1.2.34 and 1.4.0 */
+PNG_EXTERN void png_64bit_product PNGARG((long v1, long v2,
+ unsigned long *hi_product, unsigned long *lo_product));
+#endif
+#endif
+
+/* Added at libpng version 1.4.0 */
+PNG_EXTERN void png_check_IHDR PNGARG((png_structp png_ptr,
+ png_uint_32 width, png_uint_32 height, int bit_depth,
+ int color_type, int interlace_type, int compression_type,
+ int filter_type));
+
+/* Free all memory used by the read (old method - NOT DLL EXPORTED) */
+extern void png_read_destroy PNGARG((png_structp png_ptr, png_infop info_ptr,
+ png_infop end_info_ptr));
+
+/* Free any memory used in png_ptr struct (old method - NOT DLL EXPORTED) */
+extern void png_write_destroy PNGARG((png_structp png_ptr));
+
+#ifdef USE_FAR_KEYWORD /* memory model conversion function */
+extern void *png_far_to_near PNGARG((png_structp png_ptr,png_voidp ptr,
+ int check));
+#endif /* USE_FAR_KEYWORD */
+
+/* Define PNG_DEBUG at compile time for debugging information. Higher
+ * numbers for PNG_DEBUG mean more debugging information. This has
+ * only been added since version 0.95 so it is not implemented throughout
+ * libpng yet, but more support will be added as needed.
+ */
+#ifdef PNG_DEBUG
+#if (PNG_DEBUG > 0)
+#if !defined(PNG_DEBUG_FILE) && defined(_MSC_VER)
+#include <crtdbg.h>
+#if (PNG_DEBUG > 1)
+#ifndef _DEBUG
+# define _DEBUG
+#endif
+#ifndef png_debug
+#define png_debug(l,m) _RPT0(_CRT_WARN,m PNG_STRING_NEWLINE)
+#endif
+#ifndef png_debug1
+#define png_debug1(l,m,p1) _RPT1(_CRT_WARN,m PNG_STRING_NEWLINE,p1)
+#endif
+#ifndef png_debug2
+#define png_debug2(l,m,p1,p2) _RPT2(_CRT_WARN,m PNG_STRING_NEWLINE,p1,p2)
+#endif
+#endif
+#else /* PNG_DEBUG_FILE || !_MSC_VER */
+#ifndef PNG_DEBUG_FILE
+#define PNG_DEBUG_FILE stderr
+#endif /* PNG_DEBUG_FILE */
+
+#if (PNG_DEBUG > 1)
+/* Note: ["%s"m PNG_STRING_NEWLINE] probably does not work on
+ * non-ISO compilers
+ */
+# ifdef __STDC__
+# ifndef png_debug
+# define png_debug(l,m) \
+ { \
+ int num_tabs=l; \
+ fprintf(PNG_DEBUG_FILE,"%s"m PNG_STRING_NEWLINE,(num_tabs==1 ? "\t" : \
+ (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":"")))); \
+ }
+# endif
+# ifndef png_debug1
+# define png_debug1(l,m,p1) \
+ { \
+ int num_tabs=l; \
+ fprintf(PNG_DEBUG_FILE,"%s"m PNG_STRING_NEWLINE,(num_tabs==1 ? "\t" : \
+ (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))),p1); \
+ }
+# endif
+# ifndef png_debug2
+# define png_debug2(l,m,p1,p2) \
+ { \
+ int num_tabs=l; \
+ fprintf(PNG_DEBUG_FILE,"%s"m PNG_STRING_NEWLINE,(num_tabs==1 ? "\t" : \
+ (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))),p1,p2); \
+ }
+# endif
+# else /* __STDC __ */
+# ifndef png_debug
+# define png_debug(l,m) \
+ { \
+ int num_tabs=l; \
+ char format[256]; \
+ snprintf(format,256,"%s%s%s",(num_tabs==1 ? "\t" : \
+ (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))), \
+ m,PNG_STRING_NEWLINE); \
+ fprintf(PNG_DEBUG_FILE,format); \
+ }
+# endif
+# ifndef png_debug1
+# define png_debug1(l,m,p1) \
+ { \
+ int num_tabs=l; \
+ char format[256]; \
+ snprintf(format,256,"%s%s%s",(num_tabs==1 ? "\t" : \
+ (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))), \
+ m,PNG_STRING_NEWLINE); \
+ fprintf(PNG_DEBUG_FILE,format,p1); \
+ }
+# endif
+# ifndef png_debug2
+# define png_debug2(l,m,p1,p2) \
+ { \
+ int num_tabs=l; \
+ char format[256]; \
+ snprintf(format,256,"%s%s%s",(num_tabs==1 ? "\t" : \
+ (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))), \
+ m,PNG_STRING_NEWLINE); \
+ fprintf(PNG_DEBUG_FILE,format,p1,p2); \
+ }
+# endif
+# endif /* __STDC __ */
+#endif /* (PNG_DEBUG > 1) */
+
+#endif /* _MSC_VER */
+#endif /* (PNG_DEBUG > 0) */
+#endif /* PNG_DEBUG */
+#ifndef png_debug
+#define png_debug(l, m)
+#endif
+#ifndef png_debug1
+#define png_debug1(l, m, p1)
+#endif
+#ifndef png_debug2
+#define png_debug2(l, m, p1, p2)
+#endif
+
+/* Maintainer: Put new private prototypes here ^ and in libpngpf.3 */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* PNG_VERSION_INFO_ONLY */
+#endif /* PNGPRIV_H */
diff --git a/src/3rdparty/libpng/pngread.c b/src/3rdparty/libpng/pngread.c
new file mode 100644
index 0000000..1b3a3f5
--- /dev/null
+++ b/src/3rdparty/libpng/pngread.c
@@ -0,0 +1,1349 @@
+
+/* pngread.c - read a PNG file
+ *
+ * Last changed in libpng 1.4.0 [January 3, 2010]
+ * Copyright (c) 1998-2010 Glenn Randers-Pehrson
+ * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
+ * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ *
+ * This file contains routines that an application calls directly to
+ * read a PNG file or stream.
+ */
+
+#define PNG_NO_PEDANTIC_WARNINGS
+#include "png.h"
+#ifdef PNG_READ_SUPPORTED
+#include "pngpriv.h"
+
+
+/* Create a PNG structure for reading, and allocate any memory needed. */
+png_structp PNGAPI
+png_create_read_struct(png_const_charp user_png_ver, png_voidp error_ptr,
+ png_error_ptr error_fn, png_error_ptr warn_fn)
+{
+
+#ifdef PNG_USER_MEM_SUPPORTED
+ return (png_create_read_struct_2(user_png_ver, error_ptr, error_fn,
+ warn_fn, NULL, NULL, NULL));
+}
+
+/* Alternate create PNG structure for reading, and allocate any memory needed. */
+png_structp PNGAPI
+png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
+ png_error_ptr error_fn, png_error_ptr warn_fn, png_voidp mem_ptr,
+ png_malloc_ptr malloc_fn, png_free_ptr free_fn)
+{
+#endif /* PNG_USER_MEM_SUPPORTED */
+
+#ifdef PNG_SETJMP_SUPPORTED
+ volatile
+#endif
+ png_structp png_ptr;
+ volatile int png_cleanup_needed = 0;
+
+#ifdef PNG_SETJMP_SUPPORTED
+#ifdef USE_FAR_KEYWORD
+ jmp_buf jmpbuf;
+#endif
+#endif
+
+ int i;
+
+ png_debug(1, "in png_create_read_struct");
+
+#ifdef PNG_USER_MEM_SUPPORTED
+ png_ptr = (png_structp)png_create_struct_2(PNG_STRUCT_PNG,
+ malloc_fn, mem_ptr);
+#else
+ png_ptr = (png_structp)png_create_struct(PNG_STRUCT_PNG);
+#endif
+ if (png_ptr == NULL)
+ return (NULL);
+
+ /* Added at libpng-1.2.6 */
+#ifdef PNG_SET_USER_LIMITS_SUPPORTED
+ png_ptr->user_width_max = PNG_USER_WIDTH_MAX;
+ png_ptr->user_height_max = PNG_USER_HEIGHT_MAX;
+ /* Added at libpng-1.4.0 */
+ png_ptr->user_chunk_cache_max = PNG_USER_CHUNK_CACHE_MAX;
+#endif
+
+#ifdef PNG_SETJMP_SUPPORTED
+/* Applications that neglect to set up their own setjmp() and then
+ encounter a png_error() will longjmp here. Since the jmpbuf is
+ then meaningless we abort instead of returning. */
+#ifdef USE_FAR_KEYWORD
+ if (setjmp(jmpbuf))
+#else
+ if (setjmp(png_jmpbuf(png_ptr))) /* Sets longjmp to match setjmp */
+#endif
+ PNG_ABORT();
+#ifdef USE_FAR_KEYWORD
+ png_memcpy(png_jmpbuf(png_ptr), jmpbuf, png_sizeof(jmp_buf));
+#endif
+#endif /* PNG_SETJMP_SUPPORTED */
+
+#ifdef PNG_USER_MEM_SUPPORTED
+ png_set_mem_fn(png_ptr, mem_ptr, malloc_fn, free_fn);
+#endif
+
+ png_set_error_fn(png_ptr, error_ptr, error_fn, warn_fn);
+
+ if (user_png_ver)
+ {
+ i = 0;
+ do
+ {
+ if (user_png_ver[i] != png_libpng_ver[i])
+ png_ptr->flags |= PNG_FLAG_LIBRARY_MISMATCH;
+ } while (png_libpng_ver[i++]);
+ }
+ else
+ png_ptr->flags |= PNG_FLAG_LIBRARY_MISMATCH;
+
+
+ if (png_ptr->flags & PNG_FLAG_LIBRARY_MISMATCH)
+ {
+ /* Libpng 0.90 and later are binary incompatible with libpng 0.89, so
+ * we must recompile any applications that use any older library version.
+ * For versions after libpng 1.0, we will be compatible, so we need
+ * only check the first digit.
+ */
+ if (user_png_ver == NULL || user_png_ver[0] != png_libpng_ver[0] ||
+ (user_png_ver[0] == '1' && user_png_ver[2] != png_libpng_ver[2]) ||
+ (user_png_ver[0] == '0' && user_png_ver[2] < '9'))
+ {
+#ifdef PNG_STDIO_SUPPORTED
+ char msg[80];
+ if (user_png_ver)
+ {
+ png_snprintf(msg, 80,
+ "Application was compiled with png.h from libpng-%.20s",
+ user_png_ver);
+ png_warning(png_ptr, msg);
+ }
+ png_snprintf(msg, 80,
+ "Application is running with png.c from libpng-%.20s",
+ png_libpng_ver);
+ png_warning(png_ptr, msg);
+#endif
+#ifdef PNG_ERROR_NUMBERS_SUPPORTED
+ png_ptr->flags = 0;
+#endif
+ png_warning(png_ptr,
+ "Incompatible libpng version in application and library");
+
+ png_cleanup_needed = 1;
+ }
+ }
+
+ if (!png_cleanup_needed)
+ {
+ /* Initialize zbuf - compression buffer */
+ png_ptr->zbuf_size = PNG_ZBUF_SIZE;
+ png_ptr->zbuf = (png_bytep)png_malloc_warn(png_ptr,
+ png_ptr->zbuf_size);
+ if (png_ptr->zbuf == NULL)
+ png_cleanup_needed = 1;
+ }
+ png_ptr->zstream.zalloc = png_zalloc;
+ png_ptr->zstream.zfree = png_zfree;
+ png_ptr->zstream.opaque = (voidpf)png_ptr;
+
+ if (!png_cleanup_needed)
+ {
+ switch (inflateInit(&png_ptr->zstream))
+ {
+ case Z_OK: /* Do nothing */ break;
+ case Z_MEM_ERROR:
+ case Z_STREAM_ERROR: png_warning(png_ptr, "zlib memory error");
+ png_cleanup_needed = 1; break;
+ case Z_VERSION_ERROR: png_warning(png_ptr, "zlib version error");
+ png_cleanup_needed = 1; break;
+ default: png_warning(png_ptr, "Unknown zlib error");
+ png_cleanup_needed = 1;
+ }
+ }
+
+ if (png_cleanup_needed)
+ {
+ /* Clean up PNG structure and deallocate any memory. */
+ png_free(png_ptr, png_ptr->zbuf);
+ png_ptr->zbuf = NULL;
+#ifdef PNG_USER_MEM_SUPPORTED
+ png_destroy_struct_2((png_voidp)png_ptr,
+ (png_free_ptr)free_fn, (png_voidp)mem_ptr);
+#else
+ png_destroy_struct((png_voidp)png_ptr);
+#endif
+ return (NULL);
+ }
+
+ png_ptr->zstream.next_out = png_ptr->zbuf;
+ png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size;
+
+ png_set_read_fn(png_ptr, NULL, NULL);
+
+
+ return (png_ptr);
+}
+
+
+#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
+/* Read the information before the actual image data. This has been
+ * changed in v0.90 to allow reading a file that already has the magic
+ * bytes read from the stream. You can tell libpng how many bytes have
+ * been read from the beginning of the stream (up to the maximum of 8)
+ * via png_set_sig_bytes(), and we will only check the remaining bytes
+ * here. The application can then have access to the signature bytes we
+ * read if it is determined that this isn't a valid PNG file.
+ */
+void PNGAPI
+png_read_info(png_structp png_ptr, png_infop info_ptr)
+{
+ png_debug(1, "in png_read_info");
+
+ if (png_ptr == NULL || info_ptr == NULL)
+ return;
+
+ /* If we haven't checked all of the PNG signature bytes, do so now. */
+ if (png_ptr->sig_bytes < 8)
+ {
+ png_size_t num_checked = png_ptr->sig_bytes,
+ num_to_check = 8 - num_checked;
+
+#ifdef PNG_IO_STATE_SUPPORTED
+ png_ptr->io_state = PNG_IO_READING | PNG_IO_SIGNATURE;
+#endif
+
+ png_read_data(png_ptr, &(info_ptr->signature[num_checked]), num_to_check);
+ png_ptr->sig_bytes = 8;
+
+ if (png_sig_cmp(info_ptr->signature, num_checked, num_to_check))
+ {
+ if (num_checked < 4 &&
+ png_sig_cmp(info_ptr->signature, num_checked, num_to_check - 4))
+ png_error(png_ptr, "Not a PNG file");
+ else
+ png_error(png_ptr, "PNG file corrupted by ASCII conversion");
+ }
+ if (num_checked < 3)
+ png_ptr->mode |= PNG_HAVE_PNG_SIGNATURE;
+ }
+
+ for (;;)
+ {
+ PNG_IHDR;
+ PNG_IDAT;
+ PNG_IEND;
+ PNG_PLTE;
+#ifdef PNG_READ_bKGD_SUPPORTED
+ PNG_bKGD;
+#endif
+#ifdef PNG_READ_cHRM_SUPPORTED
+ PNG_cHRM;
+#endif
+#ifdef PNG_READ_gAMA_SUPPORTED
+ PNG_gAMA;
+#endif
+#ifdef PNG_READ_hIST_SUPPORTED
+ PNG_hIST;
+#endif
+#ifdef PNG_READ_iCCP_SUPPORTED
+ PNG_iCCP;
+#endif
+#ifdef PNG_READ_iTXt_SUPPORTED
+ PNG_iTXt;
+#endif
+#ifdef PNG_READ_oFFs_SUPPORTED
+ PNG_oFFs;
+#endif
+#ifdef PNG_READ_pCAL_SUPPORTED
+ PNG_pCAL;
+#endif
+#ifdef PNG_READ_pHYs_SUPPORTED
+ PNG_pHYs;
+#endif
+#ifdef PNG_READ_sBIT_SUPPORTED
+ PNG_sBIT;
+#endif
+#ifdef PNG_READ_sCAL_SUPPORTED
+ PNG_sCAL;
+#endif
+#ifdef PNG_READ_sPLT_SUPPORTED
+ PNG_sPLT;
+#endif
+#ifdef PNG_READ_sRGB_SUPPORTED
+ PNG_sRGB;
+#endif
+#ifdef PNG_READ_tEXt_SUPPORTED
+ PNG_tEXt;
+#endif
+#ifdef PNG_READ_tIME_SUPPORTED
+ PNG_tIME;
+#endif
+#ifdef PNG_READ_tRNS_SUPPORTED
+ PNG_tRNS;
+#endif
+#ifdef PNG_READ_zTXt_SUPPORTED
+ PNG_zTXt;
+#endif
+ png_uint_32 length = png_read_chunk_header(png_ptr);
+ PNG_CONST png_bytep chunk_name = png_ptr->chunk_name;
+
+ /* This should be a binary subdivision search or a hash for
+ * matching the chunk name rather than a linear search.
+ */
+ if (!png_memcmp(chunk_name, png_IDAT, 4))
+ if (png_ptr->mode & PNG_AFTER_IDAT)
+ png_ptr->mode |= PNG_HAVE_CHUNK_AFTER_IDAT;
+
+ if (!png_memcmp(chunk_name, png_IHDR, 4))
+ png_handle_IHDR(png_ptr, info_ptr, length);
+ else if (!png_memcmp(chunk_name, png_IEND, 4))
+ png_handle_IEND(png_ptr, info_ptr, length);
+#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
+ else if (png_handle_as_unknown(png_ptr, chunk_name))
+ {
+ if (!png_memcmp(chunk_name, png_IDAT, 4))
+ png_ptr->mode |= PNG_HAVE_IDAT;
+ png_handle_unknown(png_ptr, info_ptr, length);
+ if (!png_memcmp(chunk_name, png_PLTE, 4))
+ png_ptr->mode |= PNG_HAVE_PLTE;
+ else if (!png_memcmp(chunk_name, png_IDAT, 4))
+ {
+ if (!(png_ptr->mode & PNG_HAVE_IHDR))
+ png_error(png_ptr, "Missing IHDR before IDAT");
+ else if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE &&
+ !(png_ptr->mode & PNG_HAVE_PLTE))
+ png_error(png_ptr, "Missing PLTE before IDAT");
+ break;
+ }
+ }
+#endif
+ else if (!png_memcmp(chunk_name, png_PLTE, 4))
+ png_handle_PLTE(png_ptr, info_ptr, length);
+ else if (!png_memcmp(chunk_name, png_IDAT, 4))
+ {
+ if (!(png_ptr->mode & PNG_HAVE_IHDR))
+ png_error(png_ptr, "Missing IHDR before IDAT");
+ else if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE &&
+ !(png_ptr->mode & PNG_HAVE_PLTE))
+ png_error(png_ptr, "Missing PLTE before IDAT");
+
+ png_ptr->idat_size = length;
+ png_ptr->mode |= PNG_HAVE_IDAT;
+ break;
+ }
+#ifdef PNG_READ_bKGD_SUPPORTED
+ else if (!png_memcmp(chunk_name, png_bKGD, 4))
+ png_handle_bKGD(png_ptr, info_ptr, length);
+#endif
+#ifdef PNG_READ_cHRM_SUPPORTED
+ else if (!png_memcmp(chunk_name, png_cHRM, 4))
+ png_handle_cHRM(png_ptr, info_ptr, length);
+#endif
+#ifdef PNG_READ_gAMA_SUPPORTED
+ else if (!png_memcmp(chunk_name, png_gAMA, 4))
+ png_handle_gAMA(png_ptr, info_ptr, length);
+#endif
+#ifdef PNG_READ_hIST_SUPPORTED
+ else if (!png_memcmp(chunk_name, png_hIST, 4))
+ png_handle_hIST(png_ptr, info_ptr, length);
+#endif
+#ifdef PNG_READ_oFFs_SUPPORTED
+ else if (!png_memcmp(chunk_name, png_oFFs, 4))
+ png_handle_oFFs(png_ptr, info_ptr, length);
+#endif
+#ifdef PNG_READ_pCAL_SUPPORTED
+ else if (!png_memcmp(chunk_name, png_pCAL, 4))
+ png_handle_pCAL(png_ptr, info_ptr, length);
+#endif
+#ifdef PNG_READ_sCAL_SUPPORTED
+ else if (!png_memcmp(chunk_name, png_sCAL, 4))
+ png_handle_sCAL(png_ptr, info_ptr, length);
+#endif
+#ifdef PNG_READ_pHYs_SUPPORTED
+ else if (!png_memcmp(chunk_name, png_pHYs, 4))
+ png_handle_pHYs(png_ptr, info_ptr, length);
+#endif
+#ifdef PNG_READ_sBIT_SUPPORTED
+ else if (!png_memcmp(chunk_name, png_sBIT, 4))
+ png_handle_sBIT(png_ptr, info_ptr, length);
+#endif
+#ifdef PNG_READ_sRGB_SUPPORTED
+ else if (!png_memcmp(chunk_name, png_sRGB, 4))
+ png_handle_sRGB(png_ptr, info_ptr, length);
+#endif
+#ifdef PNG_READ_iCCP_SUPPORTED
+ else if (!png_memcmp(chunk_name, png_iCCP, 4))
+ png_handle_iCCP(png_ptr, info_ptr, length);
+#endif
+#ifdef PNG_READ_sPLT_SUPPORTED
+ else if (!png_memcmp(chunk_name, png_sPLT, 4))
+ png_handle_sPLT(png_ptr, info_ptr, length);
+#endif
+#ifdef PNG_READ_tEXt_SUPPORTED
+ else if (!png_memcmp(chunk_name, png_tEXt, 4))
+ png_handle_tEXt(png_ptr, info_ptr, length);
+#endif
+#ifdef PNG_READ_tIME_SUPPORTED
+ else if (!png_memcmp(chunk_name, png_tIME, 4))
+ png_handle_tIME(png_ptr, info_ptr, length);
+#endif
+#ifdef PNG_READ_tRNS_SUPPORTED
+ else if (!png_memcmp(chunk_name, png_tRNS, 4))
+ png_handle_tRNS(png_ptr, info_ptr, length);
+#endif
+#ifdef PNG_READ_zTXt_SUPPORTED
+ else if (!png_memcmp(chunk_name, png_zTXt, 4))
+ png_handle_zTXt(png_ptr, info_ptr, length);
+#endif
+#ifdef PNG_READ_iTXt_SUPPORTED
+ else if (!png_memcmp(chunk_name, png_iTXt, 4))
+ png_handle_iTXt(png_ptr, info_ptr, length);
+#endif
+ else
+ png_handle_unknown(png_ptr, info_ptr, length);
+ }
+}
+#endif /* PNG_SEQUENTIAL_READ_SUPPORTED */
+
+/* Optional call to update the users info_ptr structure */
+void PNGAPI
+png_read_update_info(png_structp png_ptr, png_infop info_ptr)
+{
+ png_debug(1, "in png_read_update_info");
+
+ if (png_ptr == NULL)
+ return;
+ if (!(png_ptr->flags & PNG_FLAG_ROW_INIT))
+ png_read_start_row(png_ptr);
+ else
+ png_warning(png_ptr,
+ "Ignoring extra png_read_update_info() call; row buffer not reallocated");
+
+ png_read_transform_info(png_ptr, info_ptr);
+}
+
+#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
+/* Initialize palette, background, etc, after transformations
+ * are set, but before any reading takes place. This allows
+ * the user to obtain a gamma-corrected palette, for example.
+ * If the user doesn't call this, we will do it ourselves.
+ */
+void PNGAPI
+png_start_read_image(png_structp png_ptr)
+{
+ png_debug(1, "in png_start_read_image");
+
+ if (png_ptr == NULL)
+ return;
+ if (!(png_ptr->flags & PNG_FLAG_ROW_INIT))
+ png_read_start_row(png_ptr);
+}
+#endif /* PNG_SEQUENTIAL_READ_SUPPORTED */
+
+#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
+void PNGAPI
+png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row)
+{
+ PNG_IDAT;
+ PNG_CONST int png_pass_dsp_mask[7] = {0xff, 0x0f, 0xff, 0x33, 0xff, 0x55,
+ 0xff};
+ PNG_CONST int png_pass_mask[7] = {0x80, 0x08, 0x88, 0x22, 0xaa, 0x55, 0xff};
+ int ret;
+
+ if (png_ptr == NULL)
+ return;
+
+ png_debug2(1, "in png_read_row (row %lu, pass %d)",
+ (unsigned long) png_ptr->row_number, png_ptr->pass);
+
+ if (!(png_ptr->flags & PNG_FLAG_ROW_INIT))
+ png_read_start_row(png_ptr);
+ if (png_ptr->row_number == 0 && png_ptr->pass == 0)
+ {
+ /* Check for transforms that have been set but were defined out */
+#if defined(PNG_WRITE_INVERT_SUPPORTED) && !defined(PNG_READ_INVERT_SUPPORTED)
+ if (png_ptr->transformations & PNG_INVERT_MONO)
+ png_warning(png_ptr, "PNG_READ_INVERT_SUPPORTED is not defined");
+#endif
+#if defined(PNG_WRITE_FILLER_SUPPORTED) && !defined(PNG_READ_FILLER_SUPPORTED)
+ if (png_ptr->transformations & PNG_FILLER)
+ png_warning(png_ptr, "PNG_READ_FILLER_SUPPORTED is not defined");
+#endif
+#if defined(PNG_WRITE_PACKSWAP_SUPPORTED) && !defined(PNG_READ_PACKSWAP_SUPPORTED)
+ if (png_ptr->transformations & PNG_PACKSWAP)
+ png_warning(png_ptr, "PNG_READ_PACKSWAP_SUPPORTED is not defined");
+#endif
+#if defined(PNG_WRITE_PACK_SUPPORTED) && !defined(PNG_READ_PACK_SUPPORTED)
+ if (png_ptr->transformations & PNG_PACK)
+ png_warning(png_ptr, "PNG_READ_PACK_SUPPORTED is not defined");
+#endif
+#if defined(PNG_WRITE_SHIFT_SUPPORTED) && !defined(PNG_READ_SHIFT_SUPPORTED)
+ if (png_ptr->transformations & PNG_SHIFT)
+ png_warning(png_ptr, "PNG_READ_SHIFT_SUPPORTED is not defined");
+#endif
+#if defined(PNG_WRITE_BGR_SUPPORTED) && !defined(PNG_READ_BGR_SUPPORTED)
+ if (png_ptr->transformations & PNG_BGR)
+ png_warning(png_ptr, "PNG_READ_BGR_SUPPORTED is not defined");
+#endif
+#if defined(PNG_WRITE_SWAP_SUPPORTED) && !defined(PNG_READ_SWAP_SUPPORTED)
+ if (png_ptr->transformations & PNG_SWAP_BYTES)
+ png_warning(png_ptr, "PNG_READ_SWAP_SUPPORTED is not defined");
+#endif
+ }
+
+#ifdef PNG_READ_INTERLACING_SUPPORTED
+ /* If interlaced and we do not need a new row, combine row and return */
+ if (png_ptr->interlaced && (png_ptr->transformations & PNG_INTERLACE))
+ {
+ switch (png_ptr->pass)
+ {
+ case 0:
+ if (png_ptr->row_number & 0x07)
+ {
+ if (dsp_row != NULL)
+ png_combine_row(png_ptr, dsp_row,
+ png_pass_dsp_mask[png_ptr->pass]);
+ png_read_finish_row(png_ptr);
+ return;
+ }
+ break;
+ case 1:
+ if ((png_ptr->row_number & 0x07) || png_ptr->width < 5)
+ {
+ if (dsp_row != NULL)
+ png_combine_row(png_ptr, dsp_row,
+ png_pass_dsp_mask[png_ptr->pass]);
+ png_read_finish_row(png_ptr);
+ return;
+ }
+ break;
+ case 2:
+ if ((png_ptr->row_number & 0x07) != 4)
+ {
+ if (dsp_row != NULL && (png_ptr->row_number & 4))
+ png_combine_row(png_ptr, dsp_row,
+ png_pass_dsp_mask[png_ptr->pass]);
+ png_read_finish_row(png_ptr);
+ return;
+ }
+ break;
+ case 3:
+ if ((png_ptr->row_number & 3) || png_ptr->width < 3)
+ {
+ if (dsp_row != NULL)
+ png_combine_row(png_ptr, dsp_row,
+ png_pass_dsp_mask[png_ptr->pass]);
+ png_read_finish_row(png_ptr);
+ return;
+ }
+ break;
+ case 4:
+ if ((png_ptr->row_number & 3) != 2)
+ {
+ if (dsp_row != NULL && (png_ptr->row_number & 2))
+ png_combine_row(png_ptr, dsp_row,
+ png_pass_dsp_mask[png_ptr->pass]);
+ png_read_finish_row(png_ptr);
+ return;
+ }
+ break;
+ case 5:
+ if ((png_ptr->row_number & 1) || png_ptr->width < 2)
+ {
+ if (dsp_row != NULL)
+ png_combine_row(png_ptr, dsp_row,
+ png_pass_dsp_mask[png_ptr->pass]);
+ png_read_finish_row(png_ptr);
+ return;
+ }
+ break;
+ case 6:
+ if (!(png_ptr->row_number & 1))
+ {
+ png_read_finish_row(png_ptr);
+ return;
+ }
+ break;
+ }
+ }
+#endif
+
+ if (!(png_ptr->mode & PNG_HAVE_IDAT))
+ png_error(png_ptr, "Invalid attempt to read row data");
+
+ png_ptr->zstream.next_out = png_ptr->row_buf;
+ png_ptr->zstream.avail_out = (uInt)png_ptr->irowbytes;
+ do
+ {
+ if (!(png_ptr->zstream.avail_in))
+ {
+ while (!png_ptr->idat_size)
+ {
+ png_crc_finish(png_ptr, 0);
+
+ png_ptr->idat_size = png_read_chunk_header(png_ptr);
+ if (png_memcmp(png_ptr->chunk_name, png_IDAT, 4))
+ png_error(png_ptr, "Not enough image data");
+ }
+ png_ptr->zstream.avail_in = (uInt)png_ptr->zbuf_size;
+ png_ptr->zstream.next_in = png_ptr->zbuf;
+ if (png_ptr->zbuf_size > png_ptr->idat_size)
+ png_ptr->zstream.avail_in = (uInt)png_ptr->idat_size;
+ png_crc_read(png_ptr, png_ptr->zbuf,
+ (png_size_t)png_ptr->zstream.avail_in);
+ png_ptr->idat_size -= png_ptr->zstream.avail_in;
+ }
+ ret = inflate(&png_ptr->zstream, Z_PARTIAL_FLUSH);
+ if (ret == Z_STREAM_END)
+ {
+ if (png_ptr->zstream.avail_out || png_ptr->zstream.avail_in ||
+ png_ptr->idat_size)
+ png_benign_error(png_ptr, "Extra compressed data");
+ png_ptr->mode |= PNG_AFTER_IDAT;
+ png_ptr->flags |= PNG_FLAG_ZLIB_FINISHED;
+ break;
+ }
+ if (ret != Z_OK)
+ png_error(png_ptr, png_ptr->zstream.msg ? png_ptr->zstream.msg :
+ "Decompression error");
+
+ } while (png_ptr->zstream.avail_out);
+
+ png_ptr->row_info.color_type = png_ptr->color_type;
+ png_ptr->row_info.width = png_ptr->iwidth;
+ png_ptr->row_info.channels = png_ptr->channels;
+ png_ptr->row_info.bit_depth = png_ptr->bit_depth;
+ png_ptr->row_info.pixel_depth = png_ptr->pixel_depth;
+ png_ptr->row_info.rowbytes = PNG_ROWBYTES(png_ptr->row_info.pixel_depth,
+ png_ptr->row_info.width);
+
+ if (png_ptr->row_buf[0])
+ png_read_filter_row(png_ptr, &(png_ptr->row_info),
+ png_ptr->row_buf + 1, png_ptr->prev_row + 1,
+ (int)(png_ptr->row_buf[0]));
+
+ png_memcpy(png_ptr->prev_row, png_ptr->row_buf, png_ptr->rowbytes + 1);
+
+#ifdef PNG_MNG_FEATURES_SUPPORTED
+ if ((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) &&
+ (png_ptr->filter_type == PNG_INTRAPIXEL_DIFFERENCING))
+ {
+ /* Intrapixel differencing */
+ png_do_read_intrapixel(&(png_ptr->row_info), png_ptr->row_buf + 1);
+ }
+#endif
+
+
+ if (png_ptr->transformations || (png_ptr->flags&PNG_FLAG_STRIP_ALPHA))
+ png_do_read_transformations(png_ptr);
+
+#ifdef PNG_READ_INTERLACING_SUPPORTED
+ /* Blow up interlaced rows to full size */
+ if (png_ptr->interlaced &&
+ (png_ptr->transformations & PNG_INTERLACE))
+ {
+ if (png_ptr->pass < 6)
+ /* Old interface (pre-1.0.9):
+ * png_do_read_interlace(&(png_ptr->row_info),
+ * png_ptr->row_buf + 1, png_ptr->pass, png_ptr->transformations);
+ */
+ png_do_read_interlace(png_ptr);
+
+ if (dsp_row != NULL)
+ png_combine_row(png_ptr, dsp_row,
+ png_pass_dsp_mask[png_ptr->pass]);
+ if (row != NULL)
+ png_combine_row(png_ptr, row,
+ png_pass_mask[png_ptr->pass]);
+ }
+ else
+#endif
+ {
+ if (row != NULL)
+ png_combine_row(png_ptr, row, 0xff);
+ if (dsp_row != NULL)
+ png_combine_row(png_ptr, dsp_row, 0xff);
+ }
+ png_read_finish_row(png_ptr);
+
+ if (png_ptr->read_row_fn != NULL)
+ (*(png_ptr->read_row_fn))(png_ptr, png_ptr->row_number, png_ptr->pass);
+}
+#endif /* PNG_SEQUENTIAL_READ_SUPPORTED */
+
+#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
+/* Read one or more rows of image data. If the image is interlaced,
+ * and png_set_interlace_handling() has been called, the rows need to
+ * contain the contents of the rows from the previous pass. If the
+ * image has alpha or transparency, and png_handle_alpha()[*] has been
+ * called, the rows contents must be initialized to the contents of the
+ * screen.
+ *
+ * "row" holds the actual image, and pixels are placed in it
+ * as they arrive. If the image is displayed after each pass, it will
+ * appear to "sparkle" in. "display_row" can be used to display a
+ * "chunky" progressive image, with finer detail added as it becomes
+ * available. If you do not want this "chunky" display, you may pass
+ * NULL for display_row. If you do not want the sparkle display, and
+ * you have not called png_handle_alpha(), you may pass NULL for rows.
+ * If you have called png_handle_alpha(), and the image has either an
+ * alpha channel or a transparency chunk, you must provide a buffer for
+ * rows. In this case, you do not have to provide a display_row buffer
+ * also, but you may. If the image is not interlaced, or if you have
+ * not called png_set_interlace_handling(), the display_row buffer will
+ * be ignored, so pass NULL to it.
+ *
+ * [*] png_handle_alpha() does not exist yet, as of this version of libpng
+ */
+
+void PNGAPI
+png_read_rows(png_structp png_ptr, png_bytepp row,
+ png_bytepp display_row, png_uint_32 num_rows)
+{
+ png_uint_32 i;
+ png_bytepp rp;
+ png_bytepp dp;
+
+ png_debug(1, "in png_read_rows");
+
+ if (png_ptr == NULL)
+ return;
+ rp = row;
+ dp = display_row;
+ if (rp != NULL && dp != NULL)
+ for (i = 0; i < num_rows; i++)
+ {
+ png_bytep rptr = *rp++;
+ png_bytep dptr = *dp++;
+
+ png_read_row(png_ptr, rptr, dptr);
+ }
+ else if (rp != NULL)
+ for (i = 0; i < num_rows; i++)
+ {
+ png_bytep rptr = *rp;
+ png_read_row(png_ptr, rptr, NULL);
+ rp++;
+ }
+ else if (dp != NULL)
+ for (i = 0; i < num_rows; i++)
+ {
+ png_bytep dptr = *dp;
+ png_read_row(png_ptr, NULL, dptr);
+ dp++;
+ }
+}
+#endif /* PNG_SEQUENTIAL_READ_SUPPORTED */
+
+#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
+/* Read the entire image. If the image has an alpha channel or a tRNS
+ * chunk, and you have called png_handle_alpha()[*], you will need to
+ * initialize the image to the current image that PNG will be overlaying.
+ * We set the num_rows again here, in case it was incorrectly set in
+ * png_read_start_row() by a call to png_read_update_info() or
+ * png_start_read_image() if png_set_interlace_handling() wasn't called
+ * prior to either of these functions like it should have been. You can
+ * only call this function once. If you desire to have an image for
+ * each pass of a interlaced image, use png_read_rows() instead.
+ *
+ * [*] png_handle_alpha() does not exist yet, as of this version of libpng
+ */
+void PNGAPI
+png_read_image(png_structp png_ptr, png_bytepp image)
+{
+ png_uint_32 i, image_height;
+ int pass, j;
+ png_bytepp rp;
+
+ png_debug(1, "in png_read_image");
+
+ if (png_ptr == NULL)
+ return;
+
+#ifdef PNG_READ_INTERLACING_SUPPORTED
+ pass = png_set_interlace_handling(png_ptr);
+#else
+ if (png_ptr->interlaced)
+ png_error(png_ptr,
+ "Cannot read interlaced image -- interlace handler disabled");
+ pass = 1;
+#endif
+
+
+ image_height=png_ptr->height;
+ png_ptr->num_rows = image_height; /* Make sure this is set correctly */
+
+ for (j = 0; j < pass; j++)
+ {
+ rp = image;
+ for (i = 0; i < image_height; i++)
+ {
+ png_read_row(png_ptr, *rp, NULL);
+ rp++;
+ }
+ }
+}
+#endif /* PNG_SEQUENTIAL_READ_SUPPORTED */
+
+#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
+/* Read the end of the PNG file. Will not read past the end of the
+ * file, will verify the end is accurate, and will read any comments
+ * or time information at the end of the file, if info is not NULL.
+ */
+void PNGAPI
+png_read_end(png_structp png_ptr, png_infop info_ptr)
+{
+ png_debug(1, "in png_read_end");
+
+ if (png_ptr == NULL)
+ return;
+ png_crc_finish(png_ptr, 0); /* Finish off CRC from last IDAT chunk */
+
+ do
+ {
+ PNG_IHDR;
+ PNG_IDAT;
+ PNG_IEND;
+ PNG_PLTE;
+#ifdef PNG_READ_bKGD_SUPPORTED
+ PNG_bKGD;
+#endif
+#ifdef PNG_READ_cHRM_SUPPORTED
+ PNG_cHRM;
+#endif
+#ifdef PNG_READ_gAMA_SUPPORTED
+ PNG_gAMA;
+#endif
+#ifdef PNG_READ_hIST_SUPPORTED
+ PNG_hIST;
+#endif
+#ifdef PNG_READ_iCCP_SUPPORTED
+ PNG_iCCP;
+#endif
+#ifdef PNG_READ_iTXt_SUPPORTED
+ PNG_iTXt;
+#endif
+#ifdef PNG_READ_oFFs_SUPPORTED
+ PNG_oFFs;
+#endif
+#ifdef PNG_READ_pCAL_SUPPORTED
+ PNG_pCAL;
+#endif
+#ifdef PNG_READ_pHYs_SUPPORTED
+ PNG_pHYs;
+#endif
+#ifdef PNG_READ_sBIT_SUPPORTED
+ PNG_sBIT;
+#endif
+#ifdef PNG_READ_sCAL_SUPPORTED
+ PNG_sCAL;
+#endif
+#ifdef PNG_READ_sPLT_SUPPORTED
+ PNG_sPLT;
+#endif
+#ifdef PNG_READ_sRGB_SUPPORTED
+ PNG_sRGB;
+#endif
+#ifdef PNG_READ_tEXt_SUPPORTED
+ PNG_tEXt;
+#endif
+#ifdef PNG_READ_tIME_SUPPORTED
+ PNG_tIME;
+#endif
+#ifdef PNG_READ_tRNS_SUPPORTED
+ PNG_tRNS;
+#endif
+#ifdef PNG_READ_zTXt_SUPPORTED
+ PNG_zTXt;
+#endif
+ png_uint_32 length = png_read_chunk_header(png_ptr);
+ PNG_CONST png_bytep chunk_name = png_ptr->chunk_name;
+
+ if (!png_memcmp(chunk_name, png_IHDR, 4))
+ png_handle_IHDR(png_ptr, info_ptr, length);
+ else if (!png_memcmp(chunk_name, png_IEND, 4))
+ png_handle_IEND(png_ptr, info_ptr, length);
+#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
+ else if (png_handle_as_unknown(png_ptr, chunk_name))
+ {
+ if (!png_memcmp(chunk_name, png_IDAT, 4))
+ {
+ if ((length > 0) || (png_ptr->mode & PNG_HAVE_CHUNK_AFTER_IDAT))
+ png_benign_error(png_ptr, "Too many IDATs found");
+ }
+ png_handle_unknown(png_ptr, info_ptr, length);
+ if (!png_memcmp(chunk_name, png_PLTE, 4))
+ png_ptr->mode |= PNG_HAVE_PLTE;
+ }
+#endif
+ else if (!png_memcmp(chunk_name, png_IDAT, 4))
+ {
+ /* Zero length IDATs are legal after the last IDAT has been
+ * read, but not after other chunks have been read.
+ */
+ if ((length > 0) || (png_ptr->mode & PNG_HAVE_CHUNK_AFTER_IDAT))
+ png_benign_error(png_ptr, "Too many IDATs found");
+ png_crc_finish(png_ptr, length);
+ }
+ else if (!png_memcmp(chunk_name, png_PLTE, 4))
+ png_handle_PLTE(png_ptr, info_ptr, length);
+#ifdef PNG_READ_bKGD_SUPPORTED
+ else if (!png_memcmp(chunk_name, png_bKGD, 4))
+ png_handle_bKGD(png_ptr, info_ptr, length);
+#endif
+#ifdef PNG_READ_cHRM_SUPPORTED
+ else if (!png_memcmp(chunk_name, png_cHRM, 4))
+ png_handle_cHRM(png_ptr, info_ptr, length);
+#endif
+#ifdef PNG_READ_gAMA_SUPPORTED
+ else if (!png_memcmp(chunk_name, png_gAMA, 4))
+ png_handle_gAMA(png_ptr, info_ptr, length);
+#endif
+#ifdef PNG_READ_hIST_SUPPORTED
+ else if (!png_memcmp(chunk_name, png_hIST, 4))
+ png_handle_hIST(png_ptr, info_ptr, length);
+#endif
+#ifdef PNG_READ_oFFs_SUPPORTED
+ else if (!png_memcmp(chunk_name, png_oFFs, 4))
+ png_handle_oFFs(png_ptr, info_ptr, length);
+#endif
+#ifdef PNG_READ_pCAL_SUPPORTED
+ else if (!png_memcmp(chunk_name, png_pCAL, 4))
+ png_handle_pCAL(png_ptr, info_ptr, length);
+#endif
+#ifdef PNG_READ_sCAL_SUPPORTED
+ else if (!png_memcmp(chunk_name, png_sCAL, 4))
+ png_handle_sCAL(png_ptr, info_ptr, length);
+#endif
+#ifdef PNG_READ_pHYs_SUPPORTED
+ else if (!png_memcmp(chunk_name, png_pHYs, 4))
+ png_handle_pHYs(png_ptr, info_ptr, length);
+#endif
+#ifdef PNG_READ_sBIT_SUPPORTED
+ else if (!png_memcmp(chunk_name, png_sBIT, 4))
+ png_handle_sBIT(png_ptr, info_ptr, length);
+#endif
+#ifdef PNG_READ_sRGB_SUPPORTED
+ else if (!png_memcmp(chunk_name, png_sRGB, 4))
+ png_handle_sRGB(png_ptr, info_ptr, length);
+#endif
+#ifdef PNG_READ_iCCP_SUPPORTED
+ else if (!png_memcmp(chunk_name, png_iCCP, 4))
+ png_handle_iCCP(png_ptr, info_ptr, length);
+#endif
+#ifdef PNG_READ_sPLT_SUPPORTED
+ else if (!png_memcmp(chunk_name, png_sPLT, 4))
+ png_handle_sPLT(png_ptr, info_ptr, length);
+#endif
+#ifdef PNG_READ_tEXt_SUPPORTED
+ else if (!png_memcmp(chunk_name, png_tEXt, 4))
+ png_handle_tEXt(png_ptr, info_ptr, length);
+#endif
+#ifdef PNG_READ_tIME_SUPPORTED
+ else if (!png_memcmp(chunk_name, png_tIME, 4))
+ png_handle_tIME(png_ptr, info_ptr, length);
+#endif
+#ifdef PNG_READ_tRNS_SUPPORTED
+ else if (!png_memcmp(chunk_name, png_tRNS, 4))
+ png_handle_tRNS(png_ptr, info_ptr, length);
+#endif
+#ifdef PNG_READ_zTXt_SUPPORTED
+ else if (!png_memcmp(chunk_name, png_zTXt, 4))
+ png_handle_zTXt(png_ptr, info_ptr, length);
+#endif
+#ifdef PNG_READ_iTXt_SUPPORTED
+ else if (!png_memcmp(chunk_name, png_iTXt, 4))
+ png_handle_iTXt(png_ptr, info_ptr, length);
+#endif
+ else
+ png_handle_unknown(png_ptr, info_ptr, length);
+ } while (!(png_ptr->mode & PNG_HAVE_IEND));
+}
+#endif /* PNG_SEQUENTIAL_READ_SUPPORTED */
+
+/* Free all memory used by the read */
+void PNGAPI
+png_destroy_read_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr,
+ png_infopp end_info_ptr_ptr)
+{
+ png_structp png_ptr = NULL;
+ png_infop info_ptr = NULL, end_info_ptr = NULL;
+#ifdef PNG_USER_MEM_SUPPORTED
+ png_free_ptr free_fn = NULL;
+ png_voidp mem_ptr = NULL;
+#endif
+
+ png_debug(1, "in png_destroy_read_struct");
+
+ if (png_ptr_ptr != NULL)
+ png_ptr = *png_ptr_ptr;
+ if (png_ptr == NULL)
+ return;
+
+#ifdef PNG_USER_MEM_SUPPORTED
+ free_fn = png_ptr->free_fn;
+ mem_ptr = png_ptr->mem_ptr;
+#endif
+
+ if (info_ptr_ptr != NULL)
+ info_ptr = *info_ptr_ptr;
+
+ if (end_info_ptr_ptr != NULL)
+ end_info_ptr = *end_info_ptr_ptr;
+
+ png_read_destroy(png_ptr, info_ptr, end_info_ptr);
+
+ if (info_ptr != NULL)
+ {
+#ifdef PNG_TEXT_SUPPORTED
+ png_free_data(png_ptr, info_ptr, PNG_FREE_TEXT, -1);
+#endif
+
+#ifdef PNG_USER_MEM_SUPPORTED
+ png_destroy_struct_2((png_voidp)info_ptr, (png_free_ptr)free_fn,
+ (png_voidp)mem_ptr);
+#else
+ png_destroy_struct((png_voidp)info_ptr);
+#endif
+ *info_ptr_ptr = NULL;
+ }
+
+ if (end_info_ptr != NULL)
+ {
+#ifdef PNG_READ_TEXT_SUPPORTED
+ png_free_data(png_ptr, end_info_ptr, PNG_FREE_TEXT, -1);
+#endif
+#ifdef PNG_USER_MEM_SUPPORTED
+ png_destroy_struct_2((png_voidp)end_info_ptr, (png_free_ptr)free_fn,
+ (png_voidp)mem_ptr);
+#else
+ png_destroy_struct((png_voidp)end_info_ptr);
+#endif
+ *end_info_ptr_ptr = NULL;
+ }
+
+ if (png_ptr != NULL)
+ {
+#ifdef PNG_USER_MEM_SUPPORTED
+ png_destroy_struct_2((png_voidp)png_ptr, (png_free_ptr)free_fn,
+ (png_voidp)mem_ptr);
+#else
+ png_destroy_struct((png_voidp)png_ptr);
+#endif
+ *png_ptr_ptr = NULL;
+ }
+}
+
+/* Free all memory used by the read (old method) */
+void /* PRIVATE */
+png_read_destroy(png_structp png_ptr, png_infop info_ptr, png_infop end_info_ptr)
+{
+#ifdef PNG_SETJMP_SUPPORTED
+ jmp_buf tmp_jmp;
+#endif
+ png_error_ptr error_fn;
+ png_error_ptr warning_fn;
+ png_voidp error_ptr;
+#ifdef PNG_USER_MEM_SUPPORTED
+ png_free_ptr free_fn;
+#endif
+
+ png_debug(1, "in png_read_destroy");
+
+ if (info_ptr != NULL)
+ png_info_destroy(png_ptr, info_ptr);
+
+ if (end_info_ptr != NULL)
+ png_info_destroy(png_ptr, end_info_ptr);
+
+ png_free(png_ptr, png_ptr->zbuf);
+ png_free(png_ptr, png_ptr->big_row_buf);
+ png_free(png_ptr, png_ptr->prev_row);
+ png_free(png_ptr, png_ptr->chunkdata);
+#ifdef PNG_READ_DITHER_SUPPORTED
+ png_free(png_ptr, png_ptr->palette_lookup);
+ png_free(png_ptr, png_ptr->dither_index);
+#endif
+#ifdef PNG_READ_GAMMA_SUPPORTED
+ png_free(png_ptr, png_ptr->gamma_table);
+#endif
+#ifdef PNG_READ_BACKGROUND_SUPPORTED
+ png_free(png_ptr, png_ptr->gamma_from_1);
+ png_free(png_ptr, png_ptr->gamma_to_1);
+#endif
+ if (png_ptr->free_me & PNG_FREE_PLTE)
+ png_zfree(png_ptr, png_ptr->palette);
+ png_ptr->free_me &= ~PNG_FREE_PLTE;
+#if defined(PNG_tRNS_SUPPORTED) || \
+ defined(PNG_READ_EXPAND_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
+ if (png_ptr->free_me & PNG_FREE_TRNS)
+ png_free(png_ptr, png_ptr->trans_alpha);
+ png_ptr->free_me &= ~PNG_FREE_TRNS;
+#endif
+#ifdef PNG_READ_hIST_SUPPORTED
+ if (png_ptr->free_me & PNG_FREE_HIST)
+ png_free(png_ptr, png_ptr->hist);
+ png_ptr->free_me &= ~PNG_FREE_HIST;
+#endif
+#ifdef PNG_READ_GAMMA_SUPPORTED
+ if (png_ptr->gamma_16_table != NULL)
+ {
+ int i;
+ int istop = (1 << (8 - png_ptr->gamma_shift));
+ for (i = 0; i < istop; i++)
+ {
+ png_free(png_ptr, png_ptr->gamma_16_table[i]);
+ }
+ png_free(png_ptr, png_ptr->gamma_16_table);
+ }
+#ifdef PNG_READ_BACKGROUND_SUPPORTED
+ if (png_ptr->gamma_16_from_1 != NULL)
+ {
+ int i;
+ int istop = (1 << (8 - png_ptr->gamma_shift));
+ for (i = 0; i < istop; i++)
+ {
+ png_free(png_ptr, png_ptr->gamma_16_from_1[i]);
+ }
+ png_free(png_ptr, png_ptr->gamma_16_from_1);
+ }
+ if (png_ptr->gamma_16_to_1 != NULL)
+ {
+ int i;
+ int istop = (1 << (8 - png_ptr->gamma_shift));
+ for (i = 0; i < istop; i++)
+ {
+ png_free(png_ptr, png_ptr->gamma_16_to_1[i]);
+ }
+ png_free(png_ptr, png_ptr->gamma_16_to_1);
+ }
+#endif
+#endif
+#ifdef PNG_TIME_RFC1123_SUPPORTED
+ png_free(png_ptr, png_ptr->time_buffer);
+#endif
+
+ inflateEnd(&png_ptr->zstream);
+#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
+ png_free(png_ptr, png_ptr->save_buffer);
+#endif
+
+#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
+#ifdef PNG_TEXT_SUPPORTED
+ png_free(png_ptr, png_ptr->current_text);
+#endif /* PNG_TEXT_SUPPORTED */
+#endif /* PNG_PROGRESSIVE_READ_SUPPORTED */
+
+ /* Save the important info out of the png_struct, in case it is
+ * being used again.
+ */
+#ifdef PNG_SETJMP_SUPPORTED
+ png_memcpy(tmp_jmp, png_ptr->jmpbuf, png_sizeof(jmp_buf));
+#endif
+
+ error_fn = png_ptr->error_fn;
+ warning_fn = png_ptr->warning_fn;
+ error_ptr = png_ptr->error_ptr;
+#ifdef PNG_USER_MEM_SUPPORTED
+ free_fn = png_ptr->free_fn;
+#endif
+
+ png_memset(png_ptr, 0, png_sizeof(png_struct));
+
+ png_ptr->error_fn = error_fn;
+ png_ptr->warning_fn = warning_fn;
+ png_ptr->error_ptr = error_ptr;
+#ifdef PNG_USER_MEM_SUPPORTED
+ png_ptr->free_fn = free_fn;
+#endif
+
+#ifdef PNG_SETJMP_SUPPORTED
+ png_memcpy(png_ptr->jmpbuf, tmp_jmp, png_sizeof(jmp_buf));
+#endif
+
+}
+
+void PNGAPI
+png_set_read_status_fn(png_structp png_ptr, png_read_status_ptr read_row_fn)
+{
+ if (png_ptr == NULL)
+ return;
+ png_ptr->read_row_fn = read_row_fn;
+}
+
+
+#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
+#ifdef PNG_INFO_IMAGE_SUPPORTED
+void PNGAPI
+png_read_png(png_structp png_ptr, png_infop info_ptr,
+ int transforms,
+ voidp params)
+{
+ int row;
+
+ if (png_ptr == NULL)
+ return;
+
+ /* png_read_info() gives us all of the information from the
+ * PNG file before the first IDAT (image data chunk).
+ */
+ png_read_info(png_ptr, info_ptr);
+ if (info_ptr->height > PNG_UINT_32_MAX/png_sizeof(png_bytep))
+ png_error(png_ptr, "Image is too high to process with png_read_png()");
+
+ /* -------------- image transformations start here ------------------- */
+
+#ifdef PNG_READ_16_TO_8_SUPPORTED
+ /* Tell libpng to strip 16 bit/color files down to 8 bits per color.
+ */
+ if (transforms & PNG_TRANSFORM_STRIP_16)
+ png_set_strip_16(png_ptr);
+#endif
+
+#ifdef PNG_READ_STRIP_ALPHA_SUPPORTED
+ /* Strip alpha bytes from the input data without combining with
+ * the background (not recommended).
+ */
+ if (transforms & PNG_TRANSFORM_STRIP_ALPHA)
+ png_set_strip_alpha(png_ptr);
+#endif
+
+#if defined(PNG_READ_PACK_SUPPORTED) && !defined(PNG_READ_EXPAND_SUPPORTED)
+ /* Extract multiple pixels with bit depths of 1, 2, or 4 from a single
+ * byte into separate bytes (useful for paletted and grayscale images).
+ */
+ if (transforms & PNG_TRANSFORM_PACKING)
+ png_set_packing(png_ptr);
+#endif
+
+#ifdef PNG_READ_PACKSWAP_SUPPORTED
+ /* Change the order of packed pixels to least significant bit first
+ * (not useful if you are using png_set_packing).
+ */
+ if (transforms & PNG_TRANSFORM_PACKSWAP)
+ png_set_packswap(png_ptr);
+#endif
+
+#ifdef PNG_READ_EXPAND_SUPPORTED
+ /* Expand paletted colors into true RGB triplets
+ * Expand grayscale images to full 8 bits from 1, 2, or 4 bits/pixel
+ * Expand paletted or RGB images with transparency to full alpha
+ * channels so the data will be available as RGBA quartets.
+ */
+ if (transforms & PNG_TRANSFORM_EXPAND)
+ if ((png_ptr->bit_depth < 8) ||
+ (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) ||
+ (png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS)))
+ png_set_expand(png_ptr);
+#endif
+
+ /* We don't handle background color or gamma transformation or dithering.
+ */
+
+#ifdef PNG_READ_INVERT_SUPPORTED
+ /* Invert monochrome files to have 0 as white and 1 as black
+ */
+ if (transforms & PNG_TRANSFORM_INVERT_MONO)
+ png_set_invert_mono(png_ptr);
+#endif
+
+#ifdef PNG_READ_SHIFT_SUPPORTED
+ /* If you want to shift the pixel values from the range [0,255] or
+ * [0,65535] to the original [0,7] or [0,31], or whatever range the
+ * colors were originally in:
+ */
+ if ((transforms & PNG_TRANSFORM_SHIFT)
+ && png_get_valid(png_ptr, info_ptr, PNG_INFO_sBIT))
+ {
+ png_color_8p sig_bit;
+
+ png_get_sBIT(png_ptr, info_ptr, &sig_bit);
+ png_set_shift(png_ptr, sig_bit);
+ }
+#endif
+
+#ifdef PNG_READ_BGR_SUPPORTED
+ /* Flip the RGB pixels to BGR (or RGBA to BGRA)
+ */
+ if (transforms & PNG_TRANSFORM_BGR)
+ png_set_bgr(png_ptr);
+#endif
+
+#ifdef PNG_READ_SWAP_ALPHA_SUPPORTED
+ /* Swap the RGBA or GA data to ARGB or AG (or BGRA to ABGR)
+ */
+ if (transforms & PNG_TRANSFORM_SWAP_ALPHA)
+ png_set_swap_alpha(png_ptr);
+#endif
+
+#ifdef PNG_READ_SWAP_SUPPORTED
+ /* Swap bytes of 16 bit files to least significant byte first
+ */
+ if (transforms & PNG_TRANSFORM_SWAP_ENDIAN)
+ png_set_swap(png_ptr);
+#endif
+
+/* Added at libpng-1.2.41 */
+#ifdef PNG_READ_INVERT_ALPHA_SUPPORTED
+ /* Invert the alpha channel from opacity to transparency
+ */
+ if (transforms & PNG_TRANSFORM_INVERT_ALPHA)
+ png_set_invert_alpha(png_ptr);
+#endif
+
+/* Added at libpng-1.2.41 */
+#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED
+ /* Expand grayscale image to RGB
+ */
+ if (transforms & PNG_TRANSFORM_GRAY_TO_RGB)
+ png_set_gray_to_rgb(png_ptr);
+#endif
+
+ /* We don't handle adding filler bytes */
+
+ /* Optional call to gamma correct and add the background to the palette
+ * and update info structure. REQUIRED if you are expecting libpng to
+ * update the palette for you (i.e., you selected such a transform above).
+ */
+ png_read_update_info(png_ptr, info_ptr);
+
+ /* -------------- image transformations end here ------------------- */
+
+ png_free_data(png_ptr, info_ptr, PNG_FREE_ROWS, 0);
+ if (info_ptr->row_pointers == NULL)
+ {
+ png_uint_32 iptr;
+
+ info_ptr->row_pointers = (png_bytepp)png_malloc(png_ptr,
+ info_ptr->height * png_sizeof(png_bytep));
+ for (iptr=0; iptr<info_ptr->height; iptr++)
+ info_ptr->row_pointers[iptr] = NULL;
+
+ info_ptr->free_me |= PNG_FREE_ROWS;
+
+ for (row = 0; row < (int)info_ptr->height; row++)
+ info_ptr->row_pointers[row] = (png_bytep)png_malloc(png_ptr,
+ png_get_rowbytes(png_ptr, info_ptr));
+ }
+
+ png_read_image(png_ptr, info_ptr->row_pointers);
+ info_ptr->valid |= PNG_INFO_IDAT;
+
+ /* Read rest of file, and get additional chunks in info_ptr - REQUIRED */
+ png_read_end(png_ptr, info_ptr);
+
+ transforms = transforms; /* Quiet compiler warnings */
+ params = params;
+
+}
+#endif /* PNG_INFO_IMAGE_SUPPORTED */
+#endif /* PNG_SEQUENTIAL_READ_SUPPORTED */
+#endif /* PNG_READ_SUPPORTED */
diff --git a/src/3rdparty/libpng/pngrio.c b/src/3rdparty/libpng/pngrio.c
new file mode 100644
index 0000000..53f2a45
--- /dev/null
+++ b/src/3rdparty/libpng/pngrio.c
@@ -0,0 +1,163 @@
+
+/* pngrio.c - functions for data input
+ *
+ * Last changed in libpng 1.4.0 [January 3, 2010]
+ * Copyright (c) 1998-2010 Glenn Randers-Pehrson
+ * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
+ * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ *
+ * This file provides a location for all input. Users who need
+ * special handling are expected to write a function that has the same
+ * arguments as this and performs a similar function, but that possibly
+ * has a different input method. Note that you shouldn't change this
+ * function, but rather write a replacement function and then make
+ * libpng use it at run time with png_set_read_fn(...).
+ */
+
+#define PNG_NO_PEDANTIC_WARNINGS
+#include "png.h"
+#ifdef PNG_READ_SUPPORTED
+#include "pngpriv.h"
+
+/* Read the data from whatever input you are using. The default routine
+ * reads from a file pointer. Note that this routine sometimes gets called
+ * with very small lengths, so you should implement some kind of simple
+ * buffering if you are using unbuffered reads. This should never be asked
+ * to read more then 64K on a 16 bit machine.
+ */
+void /* PRIVATE */
+png_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
+{
+ png_debug1(4, "reading %d bytes", (int)length);
+
+ if (png_ptr->read_data_fn != NULL)
+ (*(png_ptr->read_data_fn))(png_ptr, data, length);
+ else
+ png_error(png_ptr, "Call to NULL read function");
+}
+
+#ifdef PNG_STDIO_SUPPORTED
+/* This is the function that does the actual reading of data. If you are
+ * not reading from a standard C stream, you should create a replacement
+ * read_data function and use it at run time with png_set_read_fn(), rather
+ * than changing the library.
+ */
+#ifndef USE_FAR_KEYWORD
+void PNGAPI
+png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
+{
+ png_size_t check;
+
+ if (png_ptr == NULL)
+ return;
+ /* fread() returns 0 on error, so it is OK to store this in a png_size_t
+ * instead of an int, which is what fread() actually returns.
+ */
+ check = fread(data, 1, length, (png_FILE_p)png_ptr->io_ptr);
+
+ if (check != length)
+ png_error(png_ptr, "Read Error");
+}
+#else
+/* This is the model-independent version. Since the standard I/O library
+ can't handle far buffers in the medium and small models, we have to copy
+ the data.
+*/
+
+#define NEAR_BUF_SIZE 1024
+#define MIN(a,b) (a <= b ? a : b)
+
+static void PNGAPI
+png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
+{
+ png_size_t check;
+ png_byte *n_data;
+ png_FILE_p io_ptr;
+
+ if (png_ptr == NULL)
+ return;
+ /* Check if data really is near. If so, use usual code. */
+ n_data = (png_byte *)CVT_PTR_NOCHECK(data);
+ io_ptr = (png_FILE_p)CVT_PTR(png_ptr->io_ptr);
+ if ((png_bytep)n_data == data)
+ {
+ check = fread(n_data, 1, length, io_ptr);
+ }
+ else
+ {
+ png_byte buf[NEAR_BUF_SIZE];
+ png_size_t read, remaining, err;
+ check = 0;
+ remaining = length;
+ do
+ {
+ read = MIN(NEAR_BUF_SIZE, remaining);
+ err = fread(buf, 1, read, io_ptr);
+ png_memcpy(data, buf, read); /* copy far buffer to near buffer */
+ if (err != read)
+ break;
+ else
+ check += err;
+ data += read;
+ remaining -= read;
+ }
+ while (remaining != 0);
+ }
+ if ((png_uint_32)check != (png_uint_32)length)
+ png_error(png_ptr, "read Error");
+}
+#endif
+#endif
+
+/* This function allows the application to supply a new input function
+ * for libpng if standard C streams aren't being used.
+ *
+ * This function takes as its arguments:
+ * png_ptr - pointer to a png input data structure
+ * io_ptr - pointer to user supplied structure containing info about
+ * the input functions. May be NULL.
+ * read_data_fn - pointer to a new input function that takes as its
+ * arguments a pointer to a png_struct, a pointer to
+ * a location where input data can be stored, and a 32-bit
+ * unsigned int that is the number of bytes to be read.
+ * To exit and output any fatal error messages the new write
+ * function should call png_error(png_ptr, "Error msg").
+ * May be NULL, in which case libpng's default function will
+ * be used.
+ */
+void PNGAPI
+png_set_read_fn(png_structp png_ptr, png_voidp io_ptr,
+ png_rw_ptr read_data_fn)
+{
+ if (png_ptr == NULL)
+ return;
+ png_ptr->io_ptr = io_ptr;
+
+#ifdef PNG_STDIO_SUPPORTED
+ if (read_data_fn != NULL)
+ png_ptr->read_data_fn = read_data_fn;
+ else
+ png_ptr->read_data_fn = png_default_read_data;
+#else
+ png_ptr->read_data_fn = read_data_fn;
+#endif
+
+ /* It is an error to write to a read device */
+ if (png_ptr->write_data_fn != NULL)
+ {
+ png_ptr->write_data_fn = NULL;
+ png_warning(png_ptr,
+ "It's an error to set both read_data_fn and write_data_fn in the ");
+ png_warning(png_ptr,
+ "same structure. Resetting write_data_fn to NULL");
+ }
+
+#ifdef PNG_WRITE_FLUSH_SUPPORTED
+ png_ptr->output_flush_fn = NULL;
+#endif
+}
+#endif /* PNG_READ_SUPPORTED */
diff --git a/src/3rdparty/libpng/pngrtran.c b/src/3rdparty/libpng/pngrtran.c
new file mode 100644
index 0000000..30aa5dc
--- /dev/null
+++ b/src/3rdparty/libpng/pngrtran.c
@@ -0,0 +1,4195 @@
+
+/* pngrtran.c - transforms the data in a row for PNG readers
+ *
+ * Last changed in libpng 1.4.0 [January 3, 2010]
+ * Copyright (c) 1998-2010 Glenn Randers-Pehrson
+ * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
+ * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ *
+ * This file contains functions optionally called by an application
+ * in order to tell libpng how to handle data when reading a PNG.
+ * Transformations that are used in both reading and writing are
+ * in pngtrans.c.
+ */
+
+#define PNG_NO_PEDANTIC_WARNINGS
+#include "png.h"
+#ifdef PNG_READ_SUPPORTED
+#include "pngpriv.h"
+
+/* Set the action on getting a CRC error for an ancillary or critical chunk. */
+void PNGAPI
+png_set_crc_action(png_structp png_ptr, int crit_action, int ancil_action)
+{
+ png_debug(1, "in png_set_crc_action");
+
+ if (png_ptr == NULL)
+ return;
+
+ /* Tell libpng how we react to CRC errors in critical chunks */
+ switch (crit_action)
+ {
+ case PNG_CRC_NO_CHANGE: /* Leave setting as is */
+ break;
+
+ case PNG_CRC_WARN_USE: /* Warn/use data */
+ png_ptr->flags &= ~PNG_FLAG_CRC_CRITICAL_MASK;
+ png_ptr->flags |= PNG_FLAG_CRC_CRITICAL_USE;
+ break;
+
+ case PNG_CRC_QUIET_USE: /* Quiet/use data */
+ png_ptr->flags &= ~PNG_FLAG_CRC_CRITICAL_MASK;
+ png_ptr->flags |= PNG_FLAG_CRC_CRITICAL_USE |
+ PNG_FLAG_CRC_CRITICAL_IGNORE;
+ break;
+
+ case PNG_CRC_WARN_DISCARD: /* Not a valid action for critical data */
+ png_warning(png_ptr,
+ "Can't discard critical data on CRC error");
+ case PNG_CRC_ERROR_QUIT: /* Error/quit */
+
+ case PNG_CRC_DEFAULT:
+ default:
+ png_ptr->flags &= ~PNG_FLAG_CRC_CRITICAL_MASK;
+ break;
+ }
+
+ /* Tell libpng how we react to CRC errors in ancillary chunks */
+ switch (ancil_action)
+ {
+ case PNG_CRC_NO_CHANGE: /* Leave setting as is */
+ break;
+
+ case PNG_CRC_WARN_USE: /* Warn/use data */
+ png_ptr->flags &= ~PNG_FLAG_CRC_ANCILLARY_MASK;
+ png_ptr->flags |= PNG_FLAG_CRC_ANCILLARY_USE;
+ break;
+
+ case PNG_CRC_QUIET_USE: /* Quiet/use data */
+ png_ptr->flags &= ~PNG_FLAG_CRC_ANCILLARY_MASK;
+ png_ptr->flags |= PNG_FLAG_CRC_ANCILLARY_USE |
+ PNG_FLAG_CRC_ANCILLARY_NOWARN;
+ break;
+
+ case PNG_CRC_ERROR_QUIT: /* Error/quit */
+ png_ptr->flags &= ~PNG_FLAG_CRC_ANCILLARY_MASK;
+ png_ptr->flags |= PNG_FLAG_CRC_ANCILLARY_NOWARN;
+ break;
+
+ case PNG_CRC_WARN_DISCARD: /* Warn/discard data */
+
+ case PNG_CRC_DEFAULT:
+ default:
+ png_ptr->flags &= ~PNG_FLAG_CRC_ANCILLARY_MASK;
+ break;
+ }
+}
+
+#if defined(PNG_READ_BACKGROUND_SUPPORTED) && \
+ defined(PNG_FLOATING_POINT_SUPPORTED)
+/* Handle alpha and tRNS via a background color */
+void PNGAPI
+png_set_background(png_structp png_ptr,
+ png_color_16p background_color, int background_gamma_code,
+ int need_expand, double background_gamma)
+{
+ png_debug(1, "in png_set_background");
+
+ if (png_ptr == NULL)
+ return;
+ if (background_gamma_code == PNG_BACKGROUND_GAMMA_UNKNOWN)
+ {
+ png_warning(png_ptr, "Application must supply a known background gamma");
+ return;
+ }
+
+ png_ptr->transformations |= PNG_BACKGROUND;
+ png_memcpy(&(png_ptr->background), background_color,
+ png_sizeof(png_color_16));
+ png_ptr->background_gamma = (float)background_gamma;
+ png_ptr->background_gamma_type = (png_byte)(background_gamma_code);
+ png_ptr->transformations |= (need_expand ? PNG_BACKGROUND_EXPAND : 0);
+}
+#endif
+
+#ifdef PNG_READ_16_TO_8_SUPPORTED
+/* Strip 16 bit depth files to 8 bit depth */
+void PNGAPI
+png_set_strip_16(png_structp png_ptr)
+{
+ png_debug(1, "in png_set_strip_16");
+
+ if (png_ptr == NULL)
+ return;
+ png_ptr->transformations |= PNG_16_TO_8;
+}
+#endif
+
+#ifdef PNG_READ_STRIP_ALPHA_SUPPORTED
+void PNGAPI
+png_set_strip_alpha(png_structp png_ptr)
+{
+ png_debug(1, "in png_set_strip_alpha");
+
+ if (png_ptr == NULL)
+ return;
+ png_ptr->flags |= PNG_FLAG_STRIP_ALPHA;
+}
+#endif
+
+#ifdef PNG_READ_DITHER_SUPPORTED
+/* Dither file to 8 bit. Supply a palette, the current number
+ * of elements in the palette, the maximum number of elements
+ * allowed, and a histogram if possible. If the current number
+ * of colors is greater then the maximum number, the palette will be
+ * modified to fit in the maximum number. "full_dither" indicates
+ * whether we need a dithering cube set up for RGB images, or if we
+ * simply are reducing the number of colors in a paletted image.
+ */
+
+typedef struct png_dsort_struct
+{
+ struct png_dsort_struct FAR * next;
+ png_byte left;
+ png_byte right;
+} png_dsort;
+typedef png_dsort FAR * png_dsortp;
+typedef png_dsort FAR * FAR * png_dsortpp;
+
+void PNGAPI
+png_set_dither(png_structp png_ptr, png_colorp palette,
+ int num_palette, int maximum_colors, png_uint_16p histogram,
+ int full_dither)
+{
+ png_debug(1, "in png_set_dither");
+
+ if (png_ptr == NULL)
+ return;
+ png_ptr->transformations |= PNG_DITHER;
+
+ if (!full_dither)
+ {
+ int i;
+
+ png_ptr->dither_index = (png_bytep)png_malloc(png_ptr,
+ (png_uint_32)(num_palette * png_sizeof(png_byte)));
+ for (i = 0; i < num_palette; i++)
+ png_ptr->dither_index[i] = (png_byte)i;
+ }
+
+ if (num_palette > maximum_colors)
+ {
+ if (histogram != NULL)
+ {
+ /* This is easy enough, just throw out the least used colors.
+ * Perhaps not the best solution, but good enough.
+ */
+
+ int i;
+
+ /* Initialize an array to sort colors */
+ png_ptr->dither_sort = (png_bytep)png_malloc(png_ptr,
+ (png_uint_32)(num_palette * png_sizeof(png_byte)));
+
+ /* Initialize the dither_sort array */
+ for (i = 0; i < num_palette; i++)
+ png_ptr->dither_sort[i] = (png_byte)i;
+
+ /* Find the least used palette entries by starting a
+ * bubble sort, and running it until we have sorted
+ * out enough colors. Note that we don't care about
+ * sorting all the colors, just finding which are
+ * least used.
+ */
+
+ for (i = num_palette - 1; i >= maximum_colors; i--)
+ {
+ int done; /* To stop early if the list is pre-sorted */
+ int j;
+
+ done = 1;
+ for (j = 0; j < i; j++)
+ {
+ if (histogram[png_ptr->dither_sort[j]]
+ < histogram[png_ptr->dither_sort[j + 1]])
+ {
+ png_byte t;
+
+ t = png_ptr->dither_sort[j];
+ png_ptr->dither_sort[j] = png_ptr->dither_sort[j + 1];
+ png_ptr->dither_sort[j + 1] = t;
+ done = 0;
+ }
+ }
+ if (done)
+ break;
+ }
+
+ /* Swap the palette around, and set up a table, if necessary */
+ if (full_dither)
+ {
+ int j = num_palette;
+
+ /* Put all the useful colors within the max, but don't
+ * move the others.
+ */
+ for (i = 0; i < maximum_colors; i++)
+ {
+ if ((int)png_ptr->dither_sort[i] >= maximum_colors)
+ {
+ do
+ j--;
+ while ((int)png_ptr->dither_sort[j] >= maximum_colors);
+ palette[i] = palette[j];
+ }
+ }
+ }
+ else
+ {
+ int j = num_palette;
+
+ /* Move all the used colors inside the max limit, and
+ * develop a translation table.
+ */
+ for (i = 0; i < maximum_colors; i++)
+ {
+ /* Only move the colors we need to */
+ if ((int)png_ptr->dither_sort[i] >= maximum_colors)
+ {
+ png_color tmp_color;
+
+ do
+ j--;
+ while ((int)png_ptr->dither_sort[j] >= maximum_colors);
+
+ tmp_color = palette[j];
+ palette[j] = palette[i];
+ palette[i] = tmp_color;
+ /* Indicate where the color went */
+ png_ptr->dither_index[j] = (png_byte)i;
+ png_ptr->dither_index[i] = (png_byte)j;
+ }
+ }
+
+ /* Find closest color for those colors we are not using */
+ for (i = 0; i < num_palette; i++)
+ {
+ if ((int)png_ptr->dither_index[i] >= maximum_colors)
+ {
+ int min_d, k, min_k, d_index;
+
+ /* Find the closest color to one we threw out */
+ d_index = png_ptr->dither_index[i];
+ min_d = PNG_COLOR_DIST(palette[d_index], palette[0]);
+ for (k = 1, min_k = 0; k < maximum_colors; k++)
+ {
+ int d;
+
+ d = PNG_COLOR_DIST(palette[d_index], palette[k]);
+
+ if (d < min_d)
+ {
+ min_d = d;
+ min_k = k;
+ }
+ }
+ /* Point to closest color */
+ png_ptr->dither_index[i] = (png_byte)min_k;
+ }
+ }
+ }
+ png_free(png_ptr, png_ptr->dither_sort);
+ png_ptr->dither_sort = NULL;
+ }
+ else
+ {
+ /* This is much harder to do simply (and quickly). Perhaps
+ * we need to go through a median cut routine, but those
+ * don't always behave themselves with only a few colors
+ * as input. So we will just find the closest two colors,
+ * and throw out one of them (chosen somewhat randomly).
+ * [We don't understand this at all, so if someone wants to
+ * work on improving it, be our guest - AED, GRP]
+ */
+ int i;
+ int max_d;
+ int num_new_palette;
+ png_dsortp t;
+ png_dsortpp hash;
+
+ t = NULL;
+
+ /* Initialize palette index arrays */
+ png_ptr->index_to_palette = (png_bytep)png_malloc(png_ptr,
+ (png_uint_32)(num_palette * png_sizeof(png_byte)));
+ png_ptr->palette_to_index = (png_bytep)png_malloc(png_ptr,
+ (png_uint_32)(num_palette * png_sizeof(png_byte)));
+
+ /* Initialize the sort array */
+ for (i = 0; i < num_palette; i++)
+ {
+ png_ptr->index_to_palette[i] = (png_byte)i;
+ png_ptr->palette_to_index[i] = (png_byte)i;
+ }
+
+ hash = (png_dsortpp)png_calloc(png_ptr, (png_uint_32)(769 *
+ png_sizeof(png_dsortp)));
+
+ num_new_palette = num_palette;
+
+ /* Initial wild guess at how far apart the farthest pixel
+ * pair we will be eliminating will be. Larger
+ * numbers mean more areas will be allocated, Smaller
+ * numbers run the risk of not saving enough data, and
+ * having to do this all over again.
+ *
+ * I have not done extensive checking on this number.
+ */
+ max_d = 96;
+
+ while (num_new_palette > maximum_colors)
+ {
+ for (i = 0; i < num_new_palette - 1; i++)
+ {
+ int j;
+
+ for (j = i + 1; j < num_new_palette; j++)
+ {
+ int d;
+
+ d = PNG_COLOR_DIST(palette[i], palette[j]);
+
+ if (d <= max_d)
+ {
+
+ t = (png_dsortp)png_malloc_warn(png_ptr,
+ (png_uint_32)(png_sizeof(png_dsort)));
+ if (t == NULL)
+ break;
+ t->next = hash[d];
+ t->left = (png_byte)i;
+ t->right = (png_byte)j;
+ hash[d] = t;
+ }
+ }
+ if (t == NULL)
+ break;
+ }
+
+ if (t != NULL)
+ for (i = 0; i <= max_d; i++)
+ {
+ if (hash[i] != NULL)
+ {
+ png_dsortp p;
+
+ for (p = hash[i]; p; p = p->next)
+ {
+ if ((int)png_ptr->index_to_palette[p->left]
+ < num_new_palette &&
+ (int)png_ptr->index_to_palette[p->right]
+ < num_new_palette)
+ {
+ int j, next_j;
+
+ if (num_new_palette & 0x01)
+ {
+ j = p->left;
+ next_j = p->right;
+ }
+ else
+ {
+ j = p->right;
+ next_j = p->left;
+ }
+
+ num_new_palette--;
+ palette[png_ptr->index_to_palette[j]]
+ = palette[num_new_palette];
+ if (!full_dither)
+ {
+ int k;
+
+ for (k = 0; k < num_palette; k++)
+ {
+ if (png_ptr->dither_index[k] ==
+ png_ptr->index_to_palette[j])
+ png_ptr->dither_index[k] =
+ png_ptr->index_to_palette[next_j];
+ if ((int)png_ptr->dither_index[k] ==
+ num_new_palette)
+ png_ptr->dither_index[k] =
+ png_ptr->index_to_palette[j];
+ }
+ }
+
+ png_ptr->index_to_palette[png_ptr->palette_to_index
+ [num_new_palette]] = png_ptr->index_to_palette[j];
+ png_ptr->palette_to_index[png_ptr->index_to_palette[j]]
+ = png_ptr->palette_to_index[num_new_palette];
+
+ png_ptr->index_to_palette[j] = (png_byte)num_new_palette;
+ png_ptr->palette_to_index[num_new_palette] = (png_byte)j;
+ }
+ if (num_new_palette <= maximum_colors)
+ break;
+ }
+ if (num_new_palette <= maximum_colors)
+ break;
+ }
+ }
+
+ for (i = 0; i < 769; i++)
+ {
+ if (hash[i] != NULL)
+ {
+ png_dsortp p = hash[i];
+ while (p)
+ {
+ t = p->next;
+ png_free(png_ptr, p);
+ p = t;
+ }
+ }
+ hash[i] = 0;
+ }
+ max_d += 96;
+ }
+ png_free(png_ptr, hash);
+ png_free(png_ptr, png_ptr->palette_to_index);
+ png_free(png_ptr, png_ptr->index_to_palette);
+ png_ptr->palette_to_index = NULL;
+ png_ptr->index_to_palette = NULL;
+ }
+ num_palette = maximum_colors;
+ }
+ if (png_ptr->palette == NULL)
+ {
+ png_ptr->palette = palette;
+ }
+ png_ptr->num_palette = (png_uint_16)num_palette;
+
+ if (full_dither)
+ {
+ int i;
+ png_bytep distance;
+ int total_bits = PNG_DITHER_RED_BITS + PNG_DITHER_GREEN_BITS +
+ PNG_DITHER_BLUE_BITS;
+ int num_red = (1 << PNG_DITHER_RED_BITS);
+ int num_green = (1 << PNG_DITHER_GREEN_BITS);
+ int num_blue = (1 << PNG_DITHER_BLUE_BITS);
+ png_size_t num_entries = ((png_size_t)1 << total_bits);
+
+ png_ptr->palette_lookup = (png_bytep )png_calloc(png_ptr,
+ (png_uint_32)(num_entries * png_sizeof(png_byte)));
+
+ distance = (png_bytep)png_malloc(png_ptr, (png_uint_32)(num_entries *
+ png_sizeof(png_byte)));
+ png_memset(distance, 0xff, num_entries * png_sizeof(png_byte));
+
+ for (i = 0; i < num_palette; i++)
+ {
+ int ir, ig, ib;
+ int r = (palette[i].red >> (8 - PNG_DITHER_RED_BITS));
+ int g = (palette[i].green >> (8 - PNG_DITHER_GREEN_BITS));
+ int b = (palette[i].blue >> (8 - PNG_DITHER_BLUE_BITS));
+
+ for (ir = 0; ir < num_red; ir++)
+ {
+ /* int dr = abs(ir - r); */
+ int dr = ((ir > r) ? ir - r : r - ir);
+ int index_r = (ir << (PNG_DITHER_BLUE_BITS + PNG_DITHER_GREEN_BITS));
+
+ for (ig = 0; ig < num_green; ig++)
+ {
+ /* int dg = abs(ig - g); */
+ int dg = ((ig > g) ? ig - g : g - ig);
+ int dt = dr + dg;
+ int dm = ((dr > dg) ? dr : dg);
+ int index_g = index_r | (ig << PNG_DITHER_BLUE_BITS);
+
+ for (ib = 0; ib < num_blue; ib++)
+ {
+ int d_index = index_g | ib;
+ /* int db = abs(ib - b); */
+ int db = ((ib > b) ? ib - b : b - ib);
+ int dmax = ((dm > db) ? dm : db);
+ int d = dmax + dt + db;
+
+ if (d < (int)distance[d_index])
+ {
+ distance[d_index] = (png_byte)d;
+ png_ptr->palette_lookup[d_index] = (png_byte)i;
+ }
+ }
+ }
+ }
+ }
+
+ png_free(png_ptr, distance);
+ }
+}
+#endif
+
+#if defined(PNG_READ_GAMMA_SUPPORTED) && defined(PNG_FLOATING_POINT_SUPPORTED)
+/* Transform the image from the file_gamma to the screen_gamma. We
+ * only do transformations on images where the file_gamma and screen_gamma
+ * are not close reciprocals, otherwise it slows things down slightly, and
+ * also needlessly introduces small errors.
+ *
+ * We will turn off gamma transformation later if no semitransparent entries
+ * are present in the tRNS array for palette images. We can't do it here
+ * because we don't necessarily have the tRNS chunk yet.
+ */
+void PNGAPI
+png_set_gamma(png_structp png_ptr, double scrn_gamma, double file_gamma)
+{
+ png_debug(1, "in png_set_gamma");
+
+ if (png_ptr == NULL)
+ return;
+
+ if ((fabs(scrn_gamma * file_gamma - 1.0) > PNG_GAMMA_THRESHOLD) ||
+ (png_ptr->color_type & PNG_COLOR_MASK_ALPHA) ||
+ (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE))
+ png_ptr->transformations |= PNG_GAMMA;
+ png_ptr->gamma = (float)file_gamma;
+ png_ptr->screen_gamma = (float)scrn_gamma;
+}
+#endif
+
+#ifdef PNG_READ_EXPAND_SUPPORTED
+/* Expand paletted images to RGB, expand grayscale images of
+ * less than 8-bit depth to 8-bit depth, and expand tRNS chunks
+ * to alpha channels.
+ */
+void PNGAPI
+png_set_expand(png_structp png_ptr)
+{
+ png_debug(1, "in png_set_expand");
+
+ if (png_ptr == NULL)
+ return;
+
+ png_ptr->transformations |= (PNG_EXPAND | PNG_EXPAND_tRNS);
+ png_ptr->flags &= ~PNG_FLAG_ROW_INIT;
+}
+
+/* GRR 19990627: the following three functions currently are identical
+ * to png_set_expand(). However, it is entirely reasonable that someone
+ * might wish to expand an indexed image to RGB but *not* expand a single,
+ * fully transparent palette entry to a full alpha channel--perhaps instead
+ * convert tRNS to the grayscale/RGB format (16-bit RGB value), or replace
+ * the transparent color with a particular RGB value, or drop tRNS entirely.
+ * IOW, a future version of the library may make the transformations flag
+ * a bit more fine-grained, with separate bits for each of these three
+ * functions.
+ *
+ * More to the point, these functions make it obvious what libpng will be
+ * doing, whereas "expand" can (and does) mean any number of things.
+ *
+ * GRP 20060307: In libpng-1.2.9, png_set_gray_1_2_4_to_8() was modified
+ * to expand only the sample depth but not to expand the tRNS to alpha
+ * and its name was changed to png_set_expand_gray_1_2_4_to_8().
+ */
+
+/* Expand paletted images to RGB. */
+void PNGAPI
+png_set_palette_to_rgb(png_structp png_ptr)
+{
+ png_debug(1, "in png_set_palette_to_rgb");
+
+ if (png_ptr == NULL)
+ return;
+
+ png_ptr->transformations |= (PNG_EXPAND | PNG_EXPAND_tRNS);
+ png_ptr->flags &= ~PNG_FLAG_ROW_INIT;
+}
+
+/* Expand grayscale images of less than 8-bit depth to 8 bits. */
+void PNGAPI
+png_set_expand_gray_1_2_4_to_8(png_structp png_ptr)
+{
+ png_debug(1, "in png_set_expand_gray_1_2_4_to_8");
+
+ if (png_ptr == NULL)
+ return;
+
+ png_ptr->transformations |= PNG_EXPAND;
+ png_ptr->flags &= ~PNG_FLAG_ROW_INIT;
+}
+
+
+
+/* Expand tRNS chunks to alpha channels. */
+void PNGAPI
+png_set_tRNS_to_alpha(png_structp png_ptr)
+{
+ png_debug(1, "in png_set_tRNS_to_alpha");
+
+ png_ptr->transformations |= (PNG_EXPAND | PNG_EXPAND_tRNS);
+ png_ptr->flags &= ~PNG_FLAG_ROW_INIT;
+}
+#endif /* defined(PNG_READ_EXPAND_SUPPORTED) */
+
+#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED
+void PNGAPI
+png_set_gray_to_rgb(png_structp png_ptr)
+{
+ png_debug(1, "in png_set_gray_to_rgb");
+
+ png_ptr->transformations |= PNG_GRAY_TO_RGB;
+ png_ptr->flags &= ~PNG_FLAG_ROW_INIT;
+}
+#endif
+
+#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+/* Convert a RGB image to a grayscale of the same width. This allows us,
+ * for example, to convert a 24 bpp RGB image into an 8 bpp grayscale image.
+ */
+
+void PNGAPI
+png_set_rgb_to_gray(png_structp png_ptr, int error_action, double red,
+ double green)
+{
+ int red_fixed = (int)((float)red*100000.0 + 0.5);
+ int green_fixed = (int)((float)green*100000.0 + 0.5);
+ if (png_ptr == NULL)
+ return;
+ png_set_rgb_to_gray_fixed(png_ptr, error_action, red_fixed, green_fixed);
+}
+#endif
+
+void PNGAPI
+png_set_rgb_to_gray_fixed(png_structp png_ptr, int error_action,
+ png_fixed_point red, png_fixed_point green)
+{
+ png_debug(1, "in png_set_rgb_to_gray");
+
+ if (png_ptr == NULL)
+ return;
+
+ switch(error_action)
+ {
+ case 1: png_ptr->transformations |= PNG_RGB_TO_GRAY;
+ break;
+
+ case 2: png_ptr->transformations |= PNG_RGB_TO_GRAY_WARN;
+ break;
+
+ case 3: png_ptr->transformations |= PNG_RGB_TO_GRAY_ERR;
+ }
+ if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
+#ifdef PNG_READ_EXPAND_SUPPORTED
+ png_ptr->transformations |= PNG_EXPAND;
+#else
+ {
+ png_warning(png_ptr,
+ "Cannot do RGB_TO_GRAY without EXPAND_SUPPORTED");
+ png_ptr->transformations &= ~PNG_RGB_TO_GRAY;
+ }
+#endif
+ {
+ png_uint_16 red_int, green_int;
+ if (red < 0 || green < 0)
+ {
+ red_int = 6968; /* .212671 * 32768 + .5 */
+ green_int = 23434; /* .715160 * 32768 + .5 */
+ }
+ else if (red + green < 100000L)
+ {
+ red_int = (png_uint_16)(((png_uint_32)red*32768L)/100000L);
+ green_int = (png_uint_16)(((png_uint_32)green*32768L)/100000L);
+ }
+ else
+ {
+ png_warning(png_ptr, "ignoring out of range rgb_to_gray coefficients");
+ red_int = 6968;
+ green_int = 23434;
+ }
+ png_ptr->rgb_to_gray_red_coeff = red_int;
+ png_ptr->rgb_to_gray_green_coeff = green_int;
+ png_ptr->rgb_to_gray_blue_coeff =
+ (png_uint_16)(32768 - red_int - green_int);
+ }
+}
+#endif
+
+#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
+ defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
+void PNGAPI
+png_set_read_user_transform_fn(png_structp png_ptr, png_user_transform_ptr
+ read_user_transform_fn)
+{
+ png_debug(1, "in png_set_read_user_transform_fn");
+
+ if (png_ptr == NULL)
+ return;
+
+#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
+ png_ptr->transformations |= PNG_USER_TRANSFORM;
+ png_ptr->read_user_transform_fn = read_user_transform_fn;
+#endif
+}
+#endif
+
+/* Initialize everything needed for the read. This includes modifying
+ * the palette.
+ */
+void /* PRIVATE */
+png_init_read_transformations(png_structp png_ptr)
+{
+ png_debug(1, "in png_init_read_transformations");
+
+ {
+#if defined(PNG_READ_BACKGROUND_SUPPORTED) || defined(PNG_READ_SHIFT_SUPPORTED) \
+ || defined(PNG_READ_GAMMA_SUPPORTED)
+ int color_type = png_ptr->color_type;
+#endif
+
+#if defined(PNG_READ_EXPAND_SUPPORTED) && defined(PNG_READ_BACKGROUND_SUPPORTED)
+
+#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED
+ /* Detect gray background and attempt to enable optimization
+ * for gray --> RGB case
+ *
+ * Note: if PNG_BACKGROUND_EXPAND is set and color_type is either RGB or
+ * RGB_ALPHA (in which case need_expand is superfluous anyway), the
+ * background color might actually be gray yet not be flagged as such.
+ * This is not a problem for the current code, which uses
+ * PNG_BACKGROUND_IS_GRAY only to decide when to do the
+ * png_do_gray_to_rgb() transformation.
+ */
+ if ((png_ptr->transformations & PNG_BACKGROUND_EXPAND) &&
+ !(color_type & PNG_COLOR_MASK_COLOR))
+ {
+ png_ptr->mode |= PNG_BACKGROUND_IS_GRAY;
+ } else if ((png_ptr->transformations & PNG_BACKGROUND) &&
+ !(png_ptr->transformations & PNG_BACKGROUND_EXPAND) &&
+ (png_ptr->transformations & PNG_GRAY_TO_RGB) &&
+ png_ptr->background.red == png_ptr->background.green &&
+ png_ptr->background.red == png_ptr->background.blue)
+ {
+ png_ptr->mode |= PNG_BACKGROUND_IS_GRAY;
+ png_ptr->background.gray = png_ptr->background.red;
+ }
+#endif
+
+ if ((png_ptr->transformations & PNG_BACKGROUND_EXPAND) &&
+ (png_ptr->transformations & PNG_EXPAND))
+ {
+ if (!(color_type & PNG_COLOR_MASK_COLOR)) /* i.e., GRAY or GRAY_ALPHA */
+ {
+ /* Expand background and tRNS chunks */
+ switch (png_ptr->bit_depth)
+ {
+ case 1:
+ png_ptr->background.gray *= (png_uint_16)0xff;
+ png_ptr->background.red = png_ptr->background.green
+ = png_ptr->background.blue = png_ptr->background.gray;
+ if (!(png_ptr->transformations & PNG_EXPAND_tRNS))
+ {
+ png_ptr->trans_color.gray *= (png_uint_16)0xff;
+ png_ptr->trans_color.red = png_ptr->trans_color.green
+ = png_ptr->trans_color.blue = png_ptr->trans_color.gray;
+ }
+ break;
+
+ case 2:
+ png_ptr->background.gray *= (png_uint_16)0x55;
+ png_ptr->background.red = png_ptr->background.green
+ = png_ptr->background.blue = png_ptr->background.gray;
+ if (!(png_ptr->transformations & PNG_EXPAND_tRNS))
+ {
+ png_ptr->trans_color.gray *= (png_uint_16)0x55;
+ png_ptr->trans_color.red = png_ptr->trans_color.green
+ = png_ptr->trans_color.blue = png_ptr->trans_color.gray;
+ }
+ break;
+
+ case 4:
+ png_ptr->background.gray *= (png_uint_16)0x11;
+ png_ptr->background.red = png_ptr->background.green
+ = png_ptr->background.blue = png_ptr->background.gray;
+ if (!(png_ptr->transformations & PNG_EXPAND_tRNS))
+ {
+ png_ptr->trans_color.gray *= (png_uint_16)0x11;
+ png_ptr->trans_color.red = png_ptr->trans_color.green
+ = png_ptr->trans_color.blue = png_ptr->trans_color.gray;
+ }
+ break;
+
+ case 8:
+
+ case 16:
+ png_ptr->background.red = png_ptr->background.green
+ = png_ptr->background.blue = png_ptr->background.gray;
+ break;
+ }
+ }
+ else if (color_type == PNG_COLOR_TYPE_PALETTE)
+ {
+ png_ptr->background.red =
+ png_ptr->palette[png_ptr->background.index].red;
+ png_ptr->background.green =
+ png_ptr->palette[png_ptr->background.index].green;
+ png_ptr->background.blue =
+ png_ptr->palette[png_ptr->background.index].blue;
+
+#ifdef PNG_READ_INVERT_ALPHA_SUPPORTED
+ if (png_ptr->transformations & PNG_INVERT_ALPHA)
+ {
+#ifdef PNG_READ_EXPAND_SUPPORTED
+ if (!(png_ptr->transformations & PNG_EXPAND_tRNS))
+#endif
+ {
+ /* Invert the alpha channel (in tRNS) unless the pixels are
+ * going to be expanded, in which case leave it for later
+ */
+ int i, istop;
+ istop=(int)png_ptr->num_trans;
+ for (i=0; i<istop; i++)
+ png_ptr->trans_alpha[i] = (png_byte)(255 - png_ptr->trans_alpha[i]);
+ }
+ }
+#endif
+
+ }
+ }
+#endif
+
+#if defined(PNG_READ_BACKGROUND_SUPPORTED) && defined(PNG_READ_GAMMA_SUPPORTED)
+ png_ptr->background_1 = png_ptr->background;
+#endif
+#if defined(PNG_READ_GAMMA_SUPPORTED) && defined(PNG_FLOATING_POINT_SUPPORTED)
+
+ if ((color_type == PNG_COLOR_TYPE_PALETTE && png_ptr->num_trans != 0)
+ && (fabs(png_ptr->screen_gamma * png_ptr->gamma - 1.0)
+ < PNG_GAMMA_THRESHOLD))
+ {
+ int i, k;
+ k=0;
+ for (i=0; i<png_ptr->num_trans; i++)
+ {
+ if (png_ptr->trans_alpha[i] != 0 && png_ptr->trans_alpha[i] != 0xff)
+ k=1; /* Partial transparency is present */
+ }
+ if (k == 0)
+ png_ptr->transformations &= ~PNG_GAMMA;
+ }
+
+ if ((png_ptr->transformations & (PNG_GAMMA | PNG_RGB_TO_GRAY)) &&
+ png_ptr->gamma != 0.0)
+ {
+ png_build_gamma_table(png_ptr, png_ptr->bit_depth);
+
+#ifdef PNG_READ_BACKGROUND_SUPPORTED
+ if (png_ptr->transformations & PNG_BACKGROUND)
+ {
+ if (color_type == PNG_COLOR_TYPE_PALETTE)
+ {
+ /* Could skip if no transparency */
+ png_color back, back_1;
+ png_colorp palette = png_ptr->palette;
+ int num_palette = png_ptr->num_palette;
+ int i;
+ if (png_ptr->background_gamma_type == PNG_BACKGROUND_GAMMA_FILE)
+ {
+ back.red = png_ptr->gamma_table[png_ptr->background.red];
+ back.green = png_ptr->gamma_table[png_ptr->background.green];
+ back.blue = png_ptr->gamma_table[png_ptr->background.blue];
+
+ back_1.red = png_ptr->gamma_to_1[png_ptr->background.red];
+ back_1.green = png_ptr->gamma_to_1[png_ptr->background.green];
+ back_1.blue = png_ptr->gamma_to_1[png_ptr->background.blue];
+ }
+ else
+ {
+ double g, gs;
+
+ switch (png_ptr->background_gamma_type)
+ {
+ case PNG_BACKGROUND_GAMMA_SCREEN:
+ g = (png_ptr->screen_gamma);
+ gs = 1.0;
+ break;
+
+ case PNG_BACKGROUND_GAMMA_FILE:
+ g = 1.0 / (png_ptr->gamma);
+ gs = 1.0 / (png_ptr->gamma * png_ptr->screen_gamma);
+ break;
+
+ case PNG_BACKGROUND_GAMMA_UNIQUE:
+ g = 1.0 / (png_ptr->background_gamma);
+ gs = 1.0 / (png_ptr->background_gamma *
+ png_ptr->screen_gamma);
+ break;
+ default:
+ g = 1.0; /* back_1 */
+ gs = 1.0; /* back */
+ }
+
+ if ( fabs(gs - 1.0) < PNG_GAMMA_THRESHOLD)
+ {
+ back.red = (png_byte)png_ptr->background.red;
+ back.green = (png_byte)png_ptr->background.green;
+ back.blue = (png_byte)png_ptr->background.blue;
+ }
+ else
+ {
+ back.red = (png_byte)(pow(
+ (double)png_ptr->background.red/255.0, gs) * 255.0 + .5);
+ back.green = (png_byte)(pow(
+ (double)png_ptr->background.green/255.0, gs) * 255.0 + .5);
+ back.blue = (png_byte)(pow(
+ (double)png_ptr->background.blue/255.0, gs) * 255.0 + .5);
+ }
+
+ back_1.red = (png_byte)(pow(
+ (double)png_ptr->background.red/255.0, g) * 255.0 + .5);
+ back_1.green = (png_byte)(pow(
+ (double)png_ptr->background.green/255.0, g) * 255.0 + .5);
+ back_1.blue = (png_byte)(pow(
+ (double)png_ptr->background.blue/255.0, g) * 255.0 + .5);
+ }
+ for (i = 0; i < num_palette; i++)
+ {
+ if (i < (int)png_ptr->num_trans && png_ptr->trans_alpha[i] != 0xff)
+ {
+ if (png_ptr->trans_alpha[i] == 0)
+ {
+ palette[i] = back;
+ }
+ else /* if (png_ptr->trans_alpha[i] != 0xff) */
+ {
+ png_byte v, w;
+
+ v = png_ptr->gamma_to_1[palette[i].red];
+ png_composite(w, v, png_ptr->trans_alpha[i], back_1.red);
+ palette[i].red = png_ptr->gamma_from_1[w];
+
+ v = png_ptr->gamma_to_1[palette[i].green];
+ png_composite(w, v, png_ptr->trans_alpha[i], back_1.green);
+ palette[i].green = png_ptr->gamma_from_1[w];
+
+ v = png_ptr->gamma_to_1[palette[i].blue];
+ png_composite(w, v, png_ptr->trans_alpha[i], back_1.blue);
+ palette[i].blue = png_ptr->gamma_from_1[w];
+ }
+ }
+ else
+ {
+ palette[i].red = png_ptr->gamma_table[palette[i].red];
+ palette[i].green = png_ptr->gamma_table[palette[i].green];
+ palette[i].blue = png_ptr->gamma_table[palette[i].blue];
+ }
+ }
+ /* Prevent the transformations being done again, and make sure
+ * that the now spurious alpha channel is stripped - the code
+ * has just reduced background composition and gamma correction
+ * to a simple alpha channel strip.
+ */
+ png_ptr->transformations &= ~PNG_BACKGROUND;
+ png_ptr->transformations &= ~PNG_GAMMA;
+ png_ptr->transformations |= PNG_STRIP_ALPHA;
+ }
+ /* if (png_ptr->background_gamma_type!=PNG_BACKGROUND_GAMMA_UNKNOWN) */
+ else
+ /* color_type != PNG_COLOR_TYPE_PALETTE */
+ {
+ double m = (double)(((png_uint_32)1 << png_ptr->bit_depth) - 1);
+ double g = 1.0;
+ double gs = 1.0;
+
+ switch (png_ptr->background_gamma_type)
+ {
+ case PNG_BACKGROUND_GAMMA_SCREEN:
+ g = (png_ptr->screen_gamma);
+ gs = 1.0;
+ break;
+
+ case PNG_BACKGROUND_GAMMA_FILE:
+ g = 1.0 / (png_ptr->gamma);
+ gs = 1.0 / (png_ptr->gamma * png_ptr->screen_gamma);
+ break;
+
+ case PNG_BACKGROUND_GAMMA_UNIQUE:
+ g = 1.0 / (png_ptr->background_gamma);
+ gs = 1.0 / (png_ptr->background_gamma *
+ png_ptr->screen_gamma);
+ break;
+ }
+
+ png_ptr->background_1.gray = (png_uint_16)(pow(
+ (double)png_ptr->background.gray / m, g) * m + .5);
+ png_ptr->background.gray = (png_uint_16)(pow(
+ (double)png_ptr->background.gray / m, gs) * m + .5);
+
+ if ((png_ptr->background.red != png_ptr->background.green) ||
+ (png_ptr->background.red != png_ptr->background.blue) ||
+ (png_ptr->background.red != png_ptr->background.gray))
+ {
+ /* RGB or RGBA with color background */
+ png_ptr->background_1.red = (png_uint_16)(pow(
+ (double)png_ptr->background.red / m, g) * m + .5);
+ png_ptr->background_1.green = (png_uint_16)(pow(
+ (double)png_ptr->background.green / m, g) * m + .5);
+ png_ptr->background_1.blue = (png_uint_16)(pow(
+ (double)png_ptr->background.blue / m, g) * m + .5);
+ png_ptr->background.red = (png_uint_16)(pow(
+ (double)png_ptr->background.red / m, gs) * m + .5);
+ png_ptr->background.green = (png_uint_16)(pow(
+ (double)png_ptr->background.green / m, gs) * m + .5);
+ png_ptr->background.blue = (png_uint_16)(pow(
+ (double)png_ptr->background.blue / m, gs) * m + .5);
+ }
+ else
+ {
+ /* GRAY, GRAY ALPHA, RGB, or RGBA with gray background */
+ png_ptr->background_1.red = png_ptr->background_1.green
+ = png_ptr->background_1.blue = png_ptr->background_1.gray;
+ png_ptr->background.red = png_ptr->background.green
+ = png_ptr->background.blue = png_ptr->background.gray;
+ }
+ }
+ }
+ else
+ /* Transformation does not include PNG_BACKGROUND */
+#endif /* PNG_READ_BACKGROUND_SUPPORTED */
+ if (color_type == PNG_COLOR_TYPE_PALETTE)
+ {
+ png_colorp palette = png_ptr->palette;
+ int num_palette = png_ptr->num_palette;
+ int i;
+
+ for (i = 0; i < num_palette; i++)
+ {
+ palette[i].red = png_ptr->gamma_table[palette[i].red];
+ palette[i].green = png_ptr->gamma_table[palette[i].green];
+ palette[i].blue = png_ptr->gamma_table[palette[i].blue];
+ }
+
+ /* Done the gamma correction. */
+ png_ptr->transformations &= ~PNG_GAMMA;
+ }
+ }
+#ifdef PNG_READ_BACKGROUND_SUPPORTED
+ else
+#endif
+#endif /* PNG_READ_GAMMA_SUPPORTED && PNG_FLOATING_POINT_SUPPORTED */
+#ifdef PNG_READ_BACKGROUND_SUPPORTED
+ /* No GAMMA transformation */
+ if ((png_ptr->transformations & PNG_BACKGROUND) &&
+ (color_type == PNG_COLOR_TYPE_PALETTE))
+ {
+ int i;
+ int istop = (int)png_ptr->num_trans;
+ png_color back;
+ png_colorp palette = png_ptr->palette;
+
+ back.red = (png_byte)png_ptr->background.red;
+ back.green = (png_byte)png_ptr->background.green;
+ back.blue = (png_byte)png_ptr->background.blue;
+
+ for (i = 0; i < istop; i++)
+ {
+ if (png_ptr->trans_alpha[i] == 0)
+ {
+ palette[i] = back;
+ }
+ else if (png_ptr->trans_alpha[i] != 0xff)
+ {
+ /* The png_composite() macro is defined in png.h */
+ png_composite(palette[i].red, palette[i].red,
+ png_ptr->trans_alpha[i], back.red);
+ png_composite(palette[i].green, palette[i].green,
+ png_ptr->trans_alpha[i], back.green);
+ png_composite(palette[i].blue, palette[i].blue,
+ png_ptr->trans_alpha[i], back.blue);
+ }
+ }
+
+ /* Handled alpha, still need to strip the channel. */
+ png_ptr->transformations &= ~PNG_BACKGROUND;
+ png_ptr->transformations |= PNG_STRIP_ALPHA;
+ }
+#endif /* PNG_READ_BACKGROUND_SUPPORTED */
+
+#ifdef PNG_READ_SHIFT_SUPPORTED
+ if ((png_ptr->transformations & PNG_SHIFT) &&
+ (color_type == PNG_COLOR_TYPE_PALETTE))
+ {
+ png_uint_16 i;
+ png_uint_16 istop = png_ptr->num_palette;
+ int sr = 8 - png_ptr->sig_bit.red;
+ int sg = 8 - png_ptr->sig_bit.green;
+ int sb = 8 - png_ptr->sig_bit.blue;
+
+ if (sr < 0 || sr > 8)
+ sr = 0;
+ if (sg < 0 || sg > 8)
+ sg = 0;
+ if (sb < 0 || sb > 8)
+ sb = 0;
+ for (i = 0; i < istop; i++)
+ {
+ png_ptr->palette[i].red >>= sr;
+ png_ptr->palette[i].green >>= sg;
+ png_ptr->palette[i].blue >>= sb;
+ }
+ }
+#endif /* PNG_READ_SHIFT_SUPPORTED */
+ }
+#if !defined(PNG_READ_GAMMA_SUPPORTED) && !defined(PNG_READ_SHIFT_SUPPORTED) \
+ && !defined(PNG_READ_BACKGROUND_SUPPORTED)
+ if (png_ptr)
+ return;
+#endif
+}
+
+/* Modify the info structure to reflect the transformations. The
+ * info should be updated so a PNG file could be written with it,
+ * assuming the transformations result in valid PNG data.
+ */
+void /* PRIVATE */
+png_read_transform_info(png_structp png_ptr, png_infop info_ptr)
+{
+ png_debug(1, "in png_read_transform_info");
+
+#ifdef PNG_READ_EXPAND_SUPPORTED
+ if (png_ptr->transformations & PNG_EXPAND)
+ {
+ if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
+ {
+ if (png_ptr->num_trans &&
+ (png_ptr->transformations & PNG_EXPAND_tRNS))
+ info_ptr->color_type = PNG_COLOR_TYPE_RGB_ALPHA;
+ else
+ info_ptr->color_type = PNG_COLOR_TYPE_RGB;
+ info_ptr->bit_depth = 8;
+ info_ptr->num_trans = 0;
+ }
+ else
+ {
+ if (png_ptr->num_trans)
+ {
+ if (png_ptr->transformations & PNG_EXPAND_tRNS)
+ info_ptr->color_type |= PNG_COLOR_MASK_ALPHA;
+ }
+ if (info_ptr->bit_depth < 8)
+ info_ptr->bit_depth = 8;
+ info_ptr->num_trans = 0;
+ }
+ }
+#endif
+
+#ifdef PNG_READ_BACKGROUND_SUPPORTED
+ if (png_ptr->transformations & PNG_BACKGROUND)
+ {
+ info_ptr->color_type &= ~PNG_COLOR_MASK_ALPHA;
+ info_ptr->num_trans = 0;
+ info_ptr->background = png_ptr->background;
+ }
+#endif
+
+#ifdef PNG_READ_GAMMA_SUPPORTED
+ if (png_ptr->transformations & PNG_GAMMA)
+ {
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+ info_ptr->gamma = png_ptr->gamma;
+#endif
+#ifdef PNG_FIXED_POINT_SUPPORTED
+ info_ptr->int_gamma = png_ptr->int_gamma;
+#endif
+ }
+#endif
+
+#ifdef PNG_READ_16_TO_8_SUPPORTED
+ if ((png_ptr->transformations & PNG_16_TO_8) && (info_ptr->bit_depth == 16))
+ info_ptr->bit_depth = 8;
+#endif
+
+#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED
+ if (png_ptr->transformations & PNG_GRAY_TO_RGB)
+ info_ptr->color_type |= PNG_COLOR_MASK_COLOR;
+#endif
+
+#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
+ if (png_ptr->transformations & PNG_RGB_TO_GRAY)
+ info_ptr->color_type &= ~PNG_COLOR_MASK_COLOR;
+#endif
+
+#ifdef PNG_READ_DITHER_SUPPORTED
+ if (png_ptr->transformations & PNG_DITHER)
+ {
+ if (((info_ptr->color_type == PNG_COLOR_TYPE_RGB) ||
+ (info_ptr->color_type == PNG_COLOR_TYPE_RGB_ALPHA)) &&
+ png_ptr->palette_lookup && info_ptr->bit_depth == 8)
+ {
+ info_ptr->color_type = PNG_COLOR_TYPE_PALETTE;
+ }
+ }
+#endif
+
+#ifdef PNG_READ_PACK_SUPPORTED
+ if ((png_ptr->transformations & PNG_PACK) && (info_ptr->bit_depth < 8))
+ info_ptr->bit_depth = 8;
+#endif
+
+ if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
+ info_ptr->channels = 1;
+ else if (info_ptr->color_type & PNG_COLOR_MASK_COLOR)
+ info_ptr->channels = 3;
+ else
+ info_ptr->channels = 1;
+
+#ifdef PNG_READ_STRIP_ALPHA_SUPPORTED
+ if (png_ptr->flags & PNG_FLAG_STRIP_ALPHA)
+ info_ptr->color_type &= ~PNG_COLOR_MASK_ALPHA;
+#endif
+
+ if (info_ptr->color_type & PNG_COLOR_MASK_ALPHA)
+ info_ptr->channels++;
+
+#ifdef PNG_READ_FILLER_SUPPORTED
+ /* STRIP_ALPHA and FILLER allowed: MASK_ALPHA bit stripped above */
+ if ((png_ptr->transformations & PNG_FILLER) &&
+ ((info_ptr->color_type == PNG_COLOR_TYPE_RGB) ||
+ (info_ptr->color_type == PNG_COLOR_TYPE_GRAY)))
+ {
+ info_ptr->channels++;
+ /* If adding a true alpha channel not just filler */
+ if (png_ptr->transformations & PNG_ADD_ALPHA)
+ info_ptr->color_type |= PNG_COLOR_MASK_ALPHA;
+ }
+#endif
+
+#if defined(PNG_USER_TRANSFORM_PTR_SUPPORTED) && \
+defined(PNG_READ_USER_TRANSFORM_SUPPORTED)
+ if (png_ptr->transformations & PNG_USER_TRANSFORM)
+ {
+ if (info_ptr->bit_depth < png_ptr->user_transform_depth)
+ info_ptr->bit_depth = png_ptr->user_transform_depth;
+ if (info_ptr->channels < png_ptr->user_transform_channels)
+ info_ptr->channels = png_ptr->user_transform_channels;
+ }
+#endif
+
+ info_ptr->pixel_depth = (png_byte)(info_ptr->channels *
+ info_ptr->bit_depth);
+
+ info_ptr->rowbytes = PNG_ROWBYTES(info_ptr->pixel_depth, info_ptr->width);
+
+#ifndef PNG_READ_EXPAND_SUPPORTED
+ if (png_ptr)
+ return;
+#endif
+}
+
+/* Transform the row. The order of transformations is significant,
+ * and is very touchy. If you add a transformation, take care to
+ * decide how it fits in with the other transformations here.
+ */
+void /* PRIVATE */
+png_do_read_transformations(png_structp png_ptr)
+{
+ png_debug(1, "in png_do_read_transformations");
+
+ if (png_ptr->row_buf == NULL)
+ {
+#ifdef PNG_STDIO_SUPPORTED
+ char msg[50];
+
+ png_snprintf2(msg, 50,
+ "NULL row buffer for row %ld, pass %d", (long)png_ptr->row_number,
+ png_ptr->pass);
+ png_error(png_ptr, msg);
+#else
+ png_error(png_ptr, "NULL row buffer");
+#endif
+ }
+#ifdef PNG_WARN_UNINITIALIZED_ROW
+ if (!(png_ptr->flags & PNG_FLAG_ROW_INIT))
+ /* Application has failed to call either png_read_start_image()
+ * or png_read_update_info() after setting transforms that expand
+ * pixels. This check added to libpng-1.2.19
+ */
+#if (PNG_WARN_UNINITIALIZED_ROW==1)
+ png_error(png_ptr, "Uninitialized row");
+#else
+ png_warning(png_ptr, "Uninitialized row");
+#endif
+#endif
+
+#ifdef PNG_READ_EXPAND_SUPPORTED
+ if (png_ptr->transformations & PNG_EXPAND)
+ {
+ if (png_ptr->row_info.color_type == PNG_COLOR_TYPE_PALETTE)
+ {
+ png_do_expand_palette(&(png_ptr->row_info), png_ptr->row_buf + 1,
+ png_ptr->palette, png_ptr->trans_alpha, png_ptr->num_trans);
+ }
+ else
+ {
+ if (png_ptr->num_trans &&
+ (png_ptr->transformations & PNG_EXPAND_tRNS))
+ png_do_expand(&(png_ptr->row_info), png_ptr->row_buf + 1,
+ &(png_ptr->trans_color));
+ else
+ png_do_expand(&(png_ptr->row_info), png_ptr->row_buf + 1,
+ NULL);
+ }
+ }
+#endif
+
+#ifdef PNG_READ_STRIP_ALPHA_SUPPORTED
+ if (png_ptr->flags & PNG_FLAG_STRIP_ALPHA)
+ png_do_strip_filler(&(png_ptr->row_info), png_ptr->row_buf + 1,
+ PNG_FLAG_FILLER_AFTER | (png_ptr->flags & PNG_FLAG_STRIP_ALPHA));
+#endif
+
+#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
+ if (png_ptr->transformations & PNG_RGB_TO_GRAY)
+ {
+ int rgb_error =
+ png_do_rgb_to_gray(png_ptr, &(png_ptr->row_info), png_ptr->row_buf + 1);
+ if (rgb_error)
+ {
+ png_ptr->rgb_to_gray_status=1;
+ if ((png_ptr->transformations & PNG_RGB_TO_GRAY) ==
+ PNG_RGB_TO_GRAY_WARN)
+ png_warning(png_ptr, "png_do_rgb_to_gray found nongray pixel");
+ if ((png_ptr->transformations & PNG_RGB_TO_GRAY) ==
+ PNG_RGB_TO_GRAY_ERR)
+ png_error(png_ptr, "png_do_rgb_to_gray found nongray pixel");
+ }
+ }
+#endif
+
+/* From Andreas Dilger e-mail to png-implement, 26 March 1998:
+ *
+ * In most cases, the "simple transparency" should be done prior to doing
+ * gray-to-RGB, or you will have to test 3x as many bytes to check if a
+ * pixel is transparent. You would also need to make sure that the
+ * transparency information is upgraded to RGB.
+ *
+ * To summarize, the current flow is:
+ * - Gray + simple transparency -> compare 1 or 2 gray bytes and composite
+ * with background "in place" if transparent,
+ * convert to RGB if necessary
+ * - Gray + alpha -> composite with gray background and remove alpha bytes,
+ * convert to RGB if necessary
+ *
+ * To support RGB backgrounds for gray images we need:
+ * - Gray + simple transparency -> convert to RGB + simple transparency,
+ * compare 3 or 6 bytes and composite with
+ * background "in place" if transparent
+ * (3x compare/pixel compared to doing
+ * composite with gray bkgrnd)
+ * - Gray + alpha -> convert to RGB + alpha, composite with background and
+ * remove alpha bytes (3x float
+ * operations/pixel compared with composite
+ * on gray background)
+ *
+ * Greg's change will do this. The reason it wasn't done before is for
+ * performance, as this increases the per-pixel operations. If we would check
+ * in advance if the background was gray or RGB, and position the gray-to-RGB
+ * transform appropriately, then it would save a lot of work/time.
+ */
+
+#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED
+ /* If gray -> RGB, do so now only if background is non-gray; else do later
+ * for performance reasons
+ */
+ if ((png_ptr->transformations & PNG_GRAY_TO_RGB) &&
+ !(png_ptr->mode & PNG_BACKGROUND_IS_GRAY))
+ png_do_gray_to_rgb(&(png_ptr->row_info), png_ptr->row_buf + 1);
+#endif
+
+#ifdef PNG_READ_BACKGROUND_SUPPORTED
+ if ((png_ptr->transformations & PNG_BACKGROUND) &&
+ ((png_ptr->num_trans != 0 ) ||
+ (png_ptr->color_type & PNG_COLOR_MASK_ALPHA)))
+ png_do_background(&(png_ptr->row_info), png_ptr->row_buf + 1,
+ &(png_ptr->trans_color), &(png_ptr->background)
+#ifdef PNG_READ_GAMMA_SUPPORTED
+ , &(png_ptr->background_1),
+ png_ptr->gamma_table, png_ptr->gamma_from_1,
+ png_ptr->gamma_to_1, png_ptr->gamma_16_table,
+ png_ptr->gamma_16_from_1, png_ptr->gamma_16_to_1,
+ png_ptr->gamma_shift
+#endif
+);
+#endif
+
+#ifdef PNG_READ_GAMMA_SUPPORTED
+ if ((png_ptr->transformations & PNG_GAMMA) &&
+#ifdef PNG_READ_BACKGROUND_SUPPORTED
+ !((png_ptr->transformations & PNG_BACKGROUND) &&
+ ((png_ptr->num_trans != 0) ||
+ (png_ptr->color_type & PNG_COLOR_MASK_ALPHA))) &&
+#endif
+ (png_ptr->color_type != PNG_COLOR_TYPE_PALETTE))
+ png_do_gamma(&(png_ptr->row_info), png_ptr->row_buf + 1,
+ png_ptr->gamma_table, png_ptr->gamma_16_table,
+ png_ptr->gamma_shift);
+#endif
+
+#ifdef PNG_READ_16_TO_8_SUPPORTED
+ if (png_ptr->transformations & PNG_16_TO_8)
+ png_do_chop(&(png_ptr->row_info), png_ptr->row_buf + 1);
+#endif
+
+#ifdef PNG_READ_DITHER_SUPPORTED
+ if (png_ptr->transformations & PNG_DITHER)
+ {
+ png_do_dither((png_row_infop)&(png_ptr->row_info), png_ptr->row_buf + 1,
+ png_ptr->palette_lookup, png_ptr->dither_index);
+ if (png_ptr->row_info.rowbytes == (png_uint_32)0)
+ png_error(png_ptr, "png_do_dither returned rowbytes=0");
+ }
+#endif
+
+#ifdef PNG_READ_INVERT_SUPPORTED
+ if (png_ptr->transformations & PNG_INVERT_MONO)
+ png_do_invert(&(png_ptr->row_info), png_ptr->row_buf + 1);
+#endif
+
+#ifdef PNG_READ_SHIFT_SUPPORTED
+ if (png_ptr->transformations & PNG_SHIFT)
+ png_do_unshift(&(png_ptr->row_info), png_ptr->row_buf + 1,
+ &(png_ptr->shift));
+#endif
+
+#ifdef PNG_READ_PACK_SUPPORTED
+ if (png_ptr->transformations & PNG_PACK)
+ png_do_unpack(&(png_ptr->row_info), png_ptr->row_buf + 1);
+#endif
+
+#ifdef PNG_READ_BGR_SUPPORTED
+ if (png_ptr->transformations & PNG_BGR)
+ png_do_bgr(&(png_ptr->row_info), png_ptr->row_buf + 1);
+#endif
+
+#ifdef PNG_READ_PACKSWAP_SUPPORTED
+ if (png_ptr->transformations & PNG_PACKSWAP)
+ png_do_packswap(&(png_ptr->row_info), png_ptr->row_buf + 1);
+#endif
+
+#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED
+ /* If gray -> RGB, do so now only if we did not do so above */
+ if ((png_ptr->transformations & PNG_GRAY_TO_RGB) &&
+ (png_ptr->mode & PNG_BACKGROUND_IS_GRAY))
+ png_do_gray_to_rgb(&(png_ptr->row_info), png_ptr->row_buf + 1);
+#endif
+
+#ifdef PNG_READ_FILLER_SUPPORTED
+ if (png_ptr->transformations & PNG_FILLER)
+ png_do_read_filler(&(png_ptr->row_info), png_ptr->row_buf + 1,
+ (png_uint_32)png_ptr->filler, png_ptr->flags);
+#endif
+
+#ifdef PNG_READ_INVERT_ALPHA_SUPPORTED
+ if (png_ptr->transformations & PNG_INVERT_ALPHA)
+ png_do_read_invert_alpha(&(png_ptr->row_info), png_ptr->row_buf + 1);
+#endif
+
+#ifdef PNG_READ_SWAP_ALPHA_SUPPORTED
+ if (png_ptr->transformations & PNG_SWAP_ALPHA)
+ png_do_read_swap_alpha(&(png_ptr->row_info), png_ptr->row_buf + 1);
+#endif
+
+#ifdef PNG_READ_SWAP_SUPPORTED
+ if (png_ptr->transformations & PNG_SWAP_BYTES)
+ png_do_swap(&(png_ptr->row_info), png_ptr->row_buf + 1);
+#endif
+
+#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
+ if (png_ptr->transformations & PNG_USER_TRANSFORM)
+ {
+ if (png_ptr->read_user_transform_fn != NULL)
+ (*(png_ptr->read_user_transform_fn)) /* User read transform function */
+ (png_ptr, /* png_ptr */
+ &(png_ptr->row_info), /* row_info: */
+ /* png_uint_32 width; width of row */
+ /* png_uint_32 rowbytes; number of bytes in row */
+ /* png_byte color_type; color type of pixels */
+ /* png_byte bit_depth; bit depth of samples */
+ /* png_byte channels; number of channels (1-4) */
+ /* png_byte pixel_depth; bits per pixel (depth*channels) */
+ png_ptr->row_buf + 1); /* start of pixel data for row */
+#ifdef PNG_USER_TRANSFORM_PTR_SUPPORTED
+ if (png_ptr->user_transform_depth)
+ png_ptr->row_info.bit_depth = png_ptr->user_transform_depth;
+ if (png_ptr->user_transform_channels)
+ png_ptr->row_info.channels = png_ptr->user_transform_channels;
+#endif
+ png_ptr->row_info.pixel_depth = (png_byte)(png_ptr->row_info.bit_depth *
+ png_ptr->row_info.channels);
+ png_ptr->row_info.rowbytes = PNG_ROWBYTES(png_ptr->row_info.pixel_depth,
+ png_ptr->row_info.width);
+ }
+#endif
+
+}
+
+#ifdef PNG_READ_PACK_SUPPORTED
+/* Unpack pixels of 1, 2, or 4 bits per pixel into 1 byte per pixel,
+ * without changing the actual values. Thus, if you had a row with
+ * a bit depth of 1, you would end up with bytes that only contained
+ * the numbers 0 or 1. If you would rather they contain 0 and 255, use
+ * png_do_shift() after this.
+ */
+void /* PRIVATE */
+png_do_unpack(png_row_infop row_info, png_bytep row)
+{
+ png_debug(1, "in png_do_unpack");
+
+ if (row_info->bit_depth < 8)
+ {
+ png_uint_32 i;
+ png_uint_32 row_width=row_info->width;
+
+ switch (row_info->bit_depth)
+ {
+ case 1:
+ {
+ png_bytep sp = row + (png_size_t)((row_width - 1) >> 3);
+ png_bytep dp = row + (png_size_t)row_width - 1;
+ png_uint_32 shift = 7 - (int)((row_width + 7) & 0x07);
+ for (i = 0; i < row_width; i++)
+ {
+ *dp = (png_byte)((*sp >> shift) & 0x01);
+ if (shift == 7)
+ {
+ shift = 0;
+ sp--;
+ }
+ else
+ shift++;
+
+ dp--;
+ }
+ break;
+ }
+
+ case 2:
+ {
+
+ png_bytep sp = row + (png_size_t)((row_width - 1) >> 2);
+ png_bytep dp = row + (png_size_t)row_width - 1;
+ png_uint_32 shift = (int)((3 - ((row_width + 3) & 0x03)) << 1);
+ for (i = 0; i < row_width; i++)
+ {
+ *dp = (png_byte)((*sp >> shift) & 0x03);
+ if (shift == 6)
+ {
+ shift = 0;
+ sp--;
+ }
+ else
+ shift += 2;
+
+ dp--;
+ }
+ break;
+ }
+
+ case 4:
+ {
+ png_bytep sp = row + (png_size_t)((row_width - 1) >> 1);
+ png_bytep dp = row + (png_size_t)row_width - 1;
+ png_uint_32 shift = (int)((1 - ((row_width + 1) & 0x01)) << 2);
+ for (i = 0; i < row_width; i++)
+ {
+ *dp = (png_byte)((*sp >> shift) & 0x0f);
+ if (shift == 4)
+ {
+ shift = 0;
+ sp--;
+ }
+ else
+ shift = 4;
+
+ dp--;
+ }
+ break;
+ }
+ }
+ row_info->bit_depth = 8;
+ row_info->pixel_depth = (png_byte)(8 * row_info->channels);
+ row_info->rowbytes = row_width * row_info->channels;
+ }
+}
+#endif
+
+#ifdef PNG_READ_SHIFT_SUPPORTED
+/* Reverse the effects of png_do_shift. This routine merely shifts the
+ * pixels back to their significant bits values. Thus, if you have
+ * a row of bit depth 8, but only 5 are significant, this will shift
+ * the values back to 0 through 31.
+ */
+void /* PRIVATE */
+png_do_unshift(png_row_infop row_info, png_bytep row, png_color_8p sig_bits)
+{
+ png_debug(1, "in png_do_unshift");
+
+ if (
+ row_info->color_type != PNG_COLOR_TYPE_PALETTE)
+ {
+ int shift[4];
+ int channels = 0;
+ int c;
+ png_uint_16 value = 0;
+ png_uint_32 row_width = row_info->width;
+
+ if (row_info->color_type & PNG_COLOR_MASK_COLOR)
+ {
+ shift[channels++] = row_info->bit_depth - sig_bits->red;
+ shift[channels++] = row_info->bit_depth - sig_bits->green;
+ shift[channels++] = row_info->bit_depth - sig_bits->blue;
+ }
+ else
+ {
+ shift[channels++] = row_info->bit_depth - sig_bits->gray;
+ }
+ if (row_info->color_type & PNG_COLOR_MASK_ALPHA)
+ {
+ shift[channels++] = row_info->bit_depth - sig_bits->alpha;
+ }
+
+ for (c = 0; c < channels; c++)
+ {
+ if (shift[c] <= 0)
+ shift[c] = 0;
+ else
+ value = 1;
+ }
+
+ if (!value)
+ return;
+
+ switch (row_info->bit_depth)
+ {
+ case 2:
+ {
+ png_bytep bp;
+ png_uint_32 i;
+ png_uint_32 istop = row_info->rowbytes;
+
+ for (bp = row, i = 0; i < istop; i++)
+ {
+ *bp >>= 1;
+ *bp++ &= 0x55;
+ }
+ break;
+ }
+
+ case 4:
+ {
+ png_bytep bp = row;
+ png_uint_32 i;
+ png_uint_32 istop = row_info->rowbytes;
+ png_byte mask = (png_byte)((((int)0xf0 >> shift[0]) & (int)0xf0) |
+ (png_byte)((int)0xf >> shift[0]));
+
+ for (i = 0; i < istop; i++)
+ {
+ *bp >>= shift[0];
+ *bp++ &= mask;
+ }
+ break;
+ }
+
+ case 8:
+ {
+ png_bytep bp = row;
+ png_uint_32 i;
+ png_uint_32 istop = row_width * channels;
+
+ for (i = 0; i < istop; i++)
+ {
+ *bp++ >>= shift[i%channels];
+ }
+ break;
+ }
+
+ case 16:
+ {
+ png_bytep bp = row;
+ png_uint_32 i;
+ png_uint_32 istop = channels * row_width;
+
+ for (i = 0; i < istop; i++)
+ {
+ value = (png_uint_16)((*bp << 8) + *(bp + 1));
+ value >>= shift[i%channels];
+ *bp++ = (png_byte)(value >> 8);
+ *bp++ = (png_byte)(value & 0xff);
+ }
+ break;
+ }
+ }
+ }
+}
+#endif
+
+#ifdef PNG_READ_16_TO_8_SUPPORTED
+/* Chop rows of bit depth 16 down to 8 */
+void /* PRIVATE */
+png_do_chop(png_row_infop row_info, png_bytep row)
+{
+ png_debug(1, "in png_do_chop");
+
+ if (row_info->bit_depth == 16)
+ {
+ png_bytep sp = row;
+ png_bytep dp = row;
+ png_uint_32 i;
+ png_uint_32 istop = row_info->width * row_info->channels;
+
+ for (i = 0; i<istop; i++, sp += 2, dp++)
+ {
+#ifdef PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
+ /* This does a more accurate scaling of the 16-bit color
+ * value, rather than a simple low-byte truncation.
+ *
+ * What the ideal calculation should be:
+ * *dp = (((((png_uint_32)(*sp) << 8) |
+ * (png_uint_32)(*(sp + 1))) * 255 + 127)
+ * / (png_uint_32)65535L;
+ *
+ * GRR: no, I think this is what it really should be:
+ * *dp = (((((png_uint_32)(*sp) << 8) |
+ * (png_uint_32)(*(sp + 1))) + 128L)
+ * / (png_uint_32)257L;
+ *
+ * GRR: here's the exact calculation with shifts:
+ * temp = (((png_uint_32)(*sp) << 8) |
+ * (png_uint_32)(*(sp + 1))) + 128L;
+ * *dp = (temp - (temp >> 8)) >> 8;
+ *
+ * Approximate calculation with shift/add instead of multiply/divide:
+ * *dp = ((((png_uint_32)(*sp) << 8) |
+ * (png_uint_32)((int)(*(sp + 1)) - *sp)) + 128) >> 8;
+ *
+ * What we actually do to avoid extra shifting and conversion:
+ */
+
+ *dp = *sp + ((((int)(*(sp + 1)) - *sp) > 128) ? 1 : 0);
+#else
+ /* Simply discard the low order byte */
+ *dp = *sp;
+#endif
+ }
+ row_info->bit_depth = 8;
+ row_info->pixel_depth = (png_byte)(8 * row_info->channels);
+ row_info->rowbytes = row_info->width * row_info->channels;
+ }
+}
+#endif
+
+#ifdef PNG_READ_SWAP_ALPHA_SUPPORTED
+void /* PRIVATE */
+png_do_read_swap_alpha(png_row_infop row_info, png_bytep row)
+{
+ png_debug(1, "in png_do_read_swap_alpha");
+
+ {
+ png_uint_32 row_width = row_info->width;
+ if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
+ {
+ /* This converts from RGBA to ARGB */
+ if (row_info->bit_depth == 8)
+ {
+ png_bytep sp = row + row_info->rowbytes;
+ png_bytep dp = sp;
+ png_byte save;
+ png_uint_32 i;
+
+ for (i = 0; i < row_width; i++)
+ {
+ save = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = save;
+ }
+ }
+ /* This converts from RRGGBBAA to AARRGGBB */
+ else
+ {
+ png_bytep sp = row + row_info->rowbytes;
+ png_bytep dp = sp;
+ png_byte save[2];
+ png_uint_32 i;
+
+ for (i = 0; i < row_width; i++)
+ {
+ save[0] = *(--sp);
+ save[1] = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = save[0];
+ *(--dp) = save[1];
+ }
+ }
+ }
+ else if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
+ {
+ /* This converts from GA to AG */
+ if (row_info->bit_depth == 8)
+ {
+ png_bytep sp = row + row_info->rowbytes;
+ png_bytep dp = sp;
+ png_byte save;
+ png_uint_32 i;
+
+ for (i = 0; i < row_width; i++)
+ {
+ save = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = save;
+ }
+ }
+ /* This converts from GGAA to AAGG */
+ else
+ {
+ png_bytep sp = row + row_info->rowbytes;
+ png_bytep dp = sp;
+ png_byte save[2];
+ png_uint_32 i;
+
+ for (i = 0; i < row_width; i++)
+ {
+ save[0] = *(--sp);
+ save[1] = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = save[0];
+ *(--dp) = save[1];
+ }
+ }
+ }
+ }
+}
+#endif
+
+#ifdef PNG_READ_INVERT_ALPHA_SUPPORTED
+void /* PRIVATE */
+png_do_read_invert_alpha(png_row_infop row_info, png_bytep row)
+{
+ png_debug(1, "in png_do_read_invert_alpha");
+
+ {
+ png_uint_32 row_width = row_info->width;
+ if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
+ {
+ /* This inverts the alpha channel in RGBA */
+ if (row_info->bit_depth == 8)
+ {
+ png_bytep sp = row + row_info->rowbytes;
+ png_bytep dp = sp;
+ png_uint_32 i;
+
+ for (i = 0; i < row_width; i++)
+ {
+ *(--dp) = (png_byte)(255 - *(--sp));
+
+/* This does nothing:
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ We can replace it with:
+*/
+ sp-=3;
+ dp=sp;
+ }
+ }
+ /* This inverts the alpha channel in RRGGBBAA */
+ else
+ {
+ png_bytep sp = row + row_info->rowbytes;
+ png_bytep dp = sp;
+ png_uint_32 i;
+
+ for (i = 0; i < row_width; i++)
+ {
+ *(--dp) = (png_byte)(255 - *(--sp));
+ *(--dp) = (png_byte)(255 - *(--sp));
+
+/* This does nothing:
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ We can replace it with:
+*/
+ sp-=6;
+ dp=sp;
+ }
+ }
+ }
+ else if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
+ {
+ /* This inverts the alpha channel in GA */
+ if (row_info->bit_depth == 8)
+ {
+ png_bytep sp = row + row_info->rowbytes;
+ png_bytep dp = sp;
+ png_uint_32 i;
+
+ for (i = 0; i < row_width; i++)
+ {
+ *(--dp) = (png_byte)(255 - *(--sp));
+ *(--dp) = *(--sp);
+ }
+ }
+ /* This inverts the alpha channel in GGAA */
+ else
+ {
+ png_bytep sp = row + row_info->rowbytes;
+ png_bytep dp = sp;
+ png_uint_32 i;
+
+ for (i = 0; i < row_width; i++)
+ {
+ *(--dp) = (png_byte)(255 - *(--sp));
+ *(--dp) = (png_byte)(255 - *(--sp));
+/*
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+*/
+ sp-=2;
+ dp=sp;
+ }
+ }
+ }
+ }
+}
+#endif
+
+#ifdef PNG_READ_FILLER_SUPPORTED
+/* Add filler channel if we have RGB color */
+void /* PRIVATE */
+png_do_read_filler(png_row_infop row_info, png_bytep row,
+ png_uint_32 filler, png_uint_32 flags)
+{
+ png_uint_32 i;
+ png_uint_32 row_width = row_info->width;
+
+ png_byte hi_filler = (png_byte)((filler>>8) & 0xff);
+ png_byte lo_filler = (png_byte)(filler & 0xff);
+
+ png_debug(1, "in png_do_read_filler");
+
+ if (
+ row_info->color_type == PNG_COLOR_TYPE_GRAY)
+ {
+ if (row_info->bit_depth == 8)
+ {
+ /* This changes the data from G to GX */
+ if (flags & PNG_FLAG_FILLER_AFTER)
+ {
+ png_bytep sp = row + (png_size_t)row_width;
+ png_bytep dp = sp + (png_size_t)row_width;
+ for (i = 1; i < row_width; i++)
+ {
+ *(--dp) = lo_filler;
+ *(--dp) = *(--sp);
+ }
+ *(--dp) = lo_filler;
+ row_info->channels = 2;
+ row_info->pixel_depth = 16;
+ row_info->rowbytes = row_width * 2;
+ }
+ /* This changes the data from G to XG */
+ else
+ {
+ png_bytep sp = row + (png_size_t)row_width;
+ png_bytep dp = sp + (png_size_t)row_width;
+ for (i = 0; i < row_width; i++)
+ {
+ *(--dp) = *(--sp);
+ *(--dp) = lo_filler;
+ }
+ row_info->channels = 2;
+ row_info->pixel_depth = 16;
+ row_info->rowbytes = row_width * 2;
+ }
+ }
+ else if (row_info->bit_depth == 16)
+ {
+ /* This changes the data from GG to GGXX */
+ if (flags & PNG_FLAG_FILLER_AFTER)
+ {
+ png_bytep sp = row + (png_size_t)row_width * 2;
+ png_bytep dp = sp + (png_size_t)row_width * 2;
+ for (i = 1; i < row_width; i++)
+ {
+ *(--dp) = hi_filler;
+ *(--dp) = lo_filler;
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ }
+ *(--dp) = hi_filler;
+ *(--dp) = lo_filler;
+ row_info->channels = 2;
+ row_info->pixel_depth = 32;
+ row_info->rowbytes = row_width * 4;
+ }
+ /* This changes the data from GG to XXGG */
+ else
+ {
+ png_bytep sp = row + (png_size_t)row_width * 2;
+ png_bytep dp = sp + (png_size_t)row_width * 2;
+ for (i = 0; i < row_width; i++)
+ {
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = hi_filler;
+ *(--dp) = lo_filler;
+ }
+ row_info->channels = 2;
+ row_info->pixel_depth = 32;
+ row_info->rowbytes = row_width * 4;
+ }
+ }
+ } /* COLOR_TYPE == GRAY */
+ else if (row_info->color_type == PNG_COLOR_TYPE_RGB)
+ {
+ if (row_info->bit_depth == 8)
+ {
+ /* This changes the data from RGB to RGBX */
+ if (flags & PNG_FLAG_FILLER_AFTER)
+ {
+ png_bytep sp = row + (png_size_t)row_width * 3;
+ png_bytep dp = sp + (png_size_t)row_width;
+ for (i = 1; i < row_width; i++)
+ {
+ *(--dp) = lo_filler;
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ }
+ *(--dp) = lo_filler;
+ row_info->channels = 4;
+ row_info->pixel_depth = 32;
+ row_info->rowbytes = row_width * 4;
+ }
+ /* This changes the data from RGB to XRGB */
+ else
+ {
+ png_bytep sp = row + (png_size_t)row_width * 3;
+ png_bytep dp = sp + (png_size_t)row_width;
+ for (i = 0; i < row_width; i++)
+ {
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = lo_filler;
+ }
+ row_info->channels = 4;
+ row_info->pixel_depth = 32;
+ row_info->rowbytes = row_width * 4;
+ }
+ }
+ else if (row_info->bit_depth == 16)
+ {
+ /* This changes the data from RRGGBB to RRGGBBXX */
+ if (flags & PNG_FLAG_FILLER_AFTER)
+ {
+ png_bytep sp = row + (png_size_t)row_width * 6;
+ png_bytep dp = sp + (png_size_t)row_width * 2;
+ for (i = 1; i < row_width; i++)
+ {
+ *(--dp) = hi_filler;
+ *(--dp) = lo_filler;
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ }
+ *(--dp) = hi_filler;
+ *(--dp) = lo_filler;
+ row_info->channels = 4;
+ row_info->pixel_depth = 64;
+ row_info->rowbytes = row_width * 8;
+ }
+ /* This changes the data from RRGGBB to XXRRGGBB */
+ else
+ {
+ png_bytep sp = row + (png_size_t)row_width * 6;
+ png_bytep dp = sp + (png_size_t)row_width * 2;
+ for (i = 0; i < row_width; i++)
+ {
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = hi_filler;
+ *(--dp) = lo_filler;
+ }
+ row_info->channels = 4;
+ row_info->pixel_depth = 64;
+ row_info->rowbytes = row_width * 8;
+ }
+ }
+ } /* COLOR_TYPE == RGB */
+}
+#endif
+
+#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED
+/* Expand grayscale files to RGB, with or without alpha */
+void /* PRIVATE */
+png_do_gray_to_rgb(png_row_infop row_info, png_bytep row)
+{
+ png_uint_32 i;
+ png_uint_32 row_width = row_info->width;
+
+ png_debug(1, "in png_do_gray_to_rgb");
+
+ if (row_info->bit_depth >= 8 &&
+ !(row_info->color_type & PNG_COLOR_MASK_COLOR))
+ {
+ if (row_info->color_type == PNG_COLOR_TYPE_GRAY)
+ {
+ if (row_info->bit_depth == 8)
+ {
+ png_bytep sp = row + (png_size_t)row_width - 1;
+ png_bytep dp = sp + (png_size_t)row_width * 2;
+ for (i = 0; i < row_width; i++)
+ {
+ *(dp--) = *sp;
+ *(dp--) = *sp;
+ *(dp--) = *(sp--);
+ }
+ }
+ else
+ {
+ png_bytep sp = row + (png_size_t)row_width * 2 - 1;
+ png_bytep dp = sp + (png_size_t)row_width * 4;
+ for (i = 0; i < row_width; i++)
+ {
+ *(dp--) = *sp;
+ *(dp--) = *(sp - 1);
+ *(dp--) = *sp;
+ *(dp--) = *(sp - 1);
+ *(dp--) = *(sp--);
+ *(dp--) = *(sp--);
+ }
+ }
+ }
+ else if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
+ {
+ if (row_info->bit_depth == 8)
+ {
+ png_bytep sp = row + (png_size_t)row_width * 2 - 1;
+ png_bytep dp = sp + (png_size_t)row_width * 2;
+ for (i = 0; i < row_width; i++)
+ {
+ *(dp--) = *(sp--);
+ *(dp--) = *sp;
+ *(dp--) = *sp;
+ *(dp--) = *(sp--);
+ }
+ }
+ else
+ {
+ png_bytep sp = row + (png_size_t)row_width * 4 - 1;
+ png_bytep dp = sp + (png_size_t)row_width * 4;
+ for (i = 0; i < row_width; i++)
+ {
+ *(dp--) = *(sp--);
+ *(dp--) = *(sp--);
+ *(dp--) = *sp;
+ *(dp--) = *(sp - 1);
+ *(dp--) = *sp;
+ *(dp--) = *(sp - 1);
+ *(dp--) = *(sp--);
+ *(dp--) = *(sp--);
+ }
+ }
+ }
+ row_info->channels += (png_byte)2;
+ row_info->color_type |= PNG_COLOR_MASK_COLOR;
+ row_info->pixel_depth = (png_byte)(row_info->channels *
+ row_info->bit_depth);
+ row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, row_width);
+ }
+}
+#endif
+
+#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
+/* Reduce RGB files to grayscale, with or without alpha
+ * using the equation given in Poynton's ColorFAQ at
+ * <http://www.inforamp.net/~poynton/> (THIS LINK IS DEAD June 2008)
+ * New link:
+ * <http://www.poynton.com/notes/colour_and_gamma/>
+ * Charles Poynton poynton at poynton.com
+ *
+ * Y = 0.212671 * R + 0.715160 * G + 0.072169 * B
+ *
+ * We approximate this with
+ *
+ * Y = 0.21268 * R + 0.7151 * G + 0.07217 * B
+ *
+ * which can be expressed with integers as
+ *
+ * Y = (6969 * R + 23434 * G + 2365 * B)/32768
+ *
+ * The calculation is to be done in a linear colorspace.
+ *
+ * Other integer coefficents can be used via png_set_rgb_to_gray().
+ */
+int /* PRIVATE */
+png_do_rgb_to_gray(png_structp png_ptr, png_row_infop row_info, png_bytep row)
+
+{
+ png_uint_32 i;
+
+ png_uint_32 row_width = row_info->width;
+ int rgb_error = 0;
+
+ png_debug(1, "in png_do_rgb_to_gray");
+
+ if (
+ (row_info->color_type & PNG_COLOR_MASK_COLOR))
+ {
+ png_uint_32 rc = png_ptr->rgb_to_gray_red_coeff;
+ png_uint_32 gc = png_ptr->rgb_to_gray_green_coeff;
+ png_uint_32 bc = png_ptr->rgb_to_gray_blue_coeff;
+
+ if (row_info->color_type == PNG_COLOR_TYPE_RGB)
+ {
+ if (row_info->bit_depth == 8)
+ {
+#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
+ if (png_ptr->gamma_from_1 != NULL && png_ptr->gamma_to_1 != NULL)
+ {
+ png_bytep sp = row;
+ png_bytep dp = row;
+
+ for (i = 0; i < row_width; i++)
+ {
+ png_byte red = png_ptr->gamma_to_1[*(sp++)];
+ png_byte green = png_ptr->gamma_to_1[*(sp++)];
+ png_byte blue = png_ptr->gamma_to_1[*(sp++)];
+ if (red != green || red != blue)
+ {
+ rgb_error |= 1;
+ *(dp++) = png_ptr->gamma_from_1[
+ (rc*red + gc*green + bc*blue)>>15];
+ }
+ else
+ *(dp++) = *(sp - 1);
+ }
+ }
+ else
+#endif
+ {
+ png_bytep sp = row;
+ png_bytep dp = row;
+ for (i = 0; i < row_width; i++)
+ {
+ png_byte red = *(sp++);
+ png_byte green = *(sp++);
+ png_byte blue = *(sp++);
+ if (red != green || red != blue)
+ {
+ rgb_error |= 1;
+ *(dp++) = (png_byte)((rc*red + gc*green + bc*blue)>>15);
+ }
+ else
+ *(dp++) = *(sp - 1);
+ }
+ }
+ }
+
+ else /* RGB bit_depth == 16 */
+ {
+#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
+ if (png_ptr->gamma_16_to_1 != NULL &&
+ png_ptr->gamma_16_from_1 != NULL)
+ {
+ png_bytep sp = row;
+ png_bytep dp = row;
+ for (i = 0; i < row_width; i++)
+ {
+ png_uint_16 red, green, blue, w;
+
+ red = (png_uint_16)(((*(sp))<<8) | *(sp+1)); sp+=2;
+ green = (png_uint_16)(((*(sp))<<8) | *(sp+1)); sp+=2;
+ blue = (png_uint_16)(((*(sp))<<8) | *(sp+1)); sp+=2;
+
+ if (red == green && red == blue)
+ w = red;
+ else
+ {
+ png_uint_16 red_1 = png_ptr->gamma_16_to_1[(red&0xff) >>
+ png_ptr->gamma_shift][red>>8];
+ png_uint_16 green_1 = png_ptr->gamma_16_to_1[(green&0xff) >>
+ png_ptr->gamma_shift][green>>8];
+ png_uint_16 blue_1 = png_ptr->gamma_16_to_1[(blue&0xff) >>
+ png_ptr->gamma_shift][blue>>8];
+ png_uint_16 gray16 = (png_uint_16)((rc*red_1 + gc*green_1
+ + bc*blue_1)>>15);
+ w = png_ptr->gamma_16_from_1[(gray16&0xff) >>
+ png_ptr->gamma_shift][gray16 >> 8];
+ rgb_error |= 1;
+ }
+
+ *(dp++) = (png_byte)((w>>8) & 0xff);
+ *(dp++) = (png_byte)(w & 0xff);
+ }
+ }
+ else
+#endif
+ {
+ png_bytep sp = row;
+ png_bytep dp = row;
+ for (i = 0; i < row_width; i++)
+ {
+ png_uint_16 red, green, blue, gray16;
+
+ red = (png_uint_16)(((*(sp))<<8) | *(sp+1)); sp+=2;
+ green = (png_uint_16)(((*(sp))<<8) | *(sp+1)); sp+=2;
+ blue = (png_uint_16)(((*(sp))<<8) | *(sp+1)); sp+=2;
+
+ if (red != green || red != blue)
+ rgb_error |= 1;
+ gray16 = (png_uint_16)((rc*red + gc*green + bc*blue)>>15);
+ *(dp++) = (png_byte)((gray16>>8) & 0xff);
+ *(dp++) = (png_byte)(gray16 & 0xff);
+ }
+ }
+ }
+ }
+ if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
+ {
+ if (row_info->bit_depth == 8)
+ {
+#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
+ if (png_ptr->gamma_from_1 != NULL && png_ptr->gamma_to_1 != NULL)
+ {
+ png_bytep sp = row;
+ png_bytep dp = row;
+ for (i = 0; i < row_width; i++)
+ {
+ png_byte red = png_ptr->gamma_to_1[*(sp++)];
+ png_byte green = png_ptr->gamma_to_1[*(sp++)];
+ png_byte blue = png_ptr->gamma_to_1[*(sp++)];
+ if (red != green || red != blue)
+ rgb_error |= 1;
+ *(dp++) = png_ptr->gamma_from_1
+ [(rc*red + gc*green + bc*blue)>>15];
+ *(dp++) = *(sp++); /* alpha */
+ }
+ }
+ else
+#endif
+ {
+ png_bytep sp = row;
+ png_bytep dp = row;
+ for (i = 0; i < row_width; i++)
+ {
+ png_byte red = *(sp++);
+ png_byte green = *(sp++);
+ png_byte blue = *(sp++);
+ if (red != green || red != blue)
+ rgb_error |= 1;
+ *(dp++) = (png_byte)((rc*red + gc*green + bc*blue)>>15);
+ *(dp++) = *(sp++); /* alpha */
+ }
+ }
+ }
+ else /* RGBA bit_depth == 16 */
+ {
+#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
+ if (png_ptr->gamma_16_to_1 != NULL &&
+ png_ptr->gamma_16_from_1 != NULL)
+ {
+ png_bytep sp = row;
+ png_bytep dp = row;
+ for (i = 0; i < row_width; i++)
+ {
+ png_uint_16 red, green, blue, w;
+
+ red = (png_uint_16)(((*(sp))<<8) | *(sp+1)); sp+=2;
+ green = (png_uint_16)(((*(sp))<<8) | *(sp+1)); sp+=2;
+ blue = (png_uint_16)(((*(sp))<<8) | *(sp+1)); sp+=2;
+
+ if (red == green && red == blue)
+ w = red;
+ else
+ {
+ png_uint_16 red_1 = png_ptr->gamma_16_to_1[(red&0xff) >>
+ png_ptr->gamma_shift][red>>8];
+ png_uint_16 green_1 = png_ptr->gamma_16_to_1[(green&0xff) >>
+ png_ptr->gamma_shift][green>>8];
+ png_uint_16 blue_1 = png_ptr->gamma_16_to_1[(blue&0xff) >>
+ png_ptr->gamma_shift][blue>>8];
+ png_uint_16 gray16 = (png_uint_16)((rc * red_1
+ + gc * green_1 + bc * blue_1)>>15);
+ w = png_ptr->gamma_16_from_1[(gray16&0xff) >>
+ png_ptr->gamma_shift][gray16 >> 8];
+ rgb_error |= 1;
+ }
+
+ *(dp++) = (png_byte)((w>>8) & 0xff);
+ *(dp++) = (png_byte)(w & 0xff);
+ *(dp++) = *(sp++); /* alpha */
+ *(dp++) = *(sp++);
+ }
+ }
+ else
+#endif
+ {
+ png_bytep sp = row;
+ png_bytep dp = row;
+ for (i = 0; i < row_width; i++)
+ {
+ png_uint_16 red, green, blue, gray16;
+ red = (png_uint_16)((*(sp)<<8) | *(sp+1)); sp+=2;
+ green = (png_uint_16)((*(sp)<<8) | *(sp+1)); sp+=2;
+ blue = (png_uint_16)((*(sp)<<8) | *(sp+1)); sp+=2;
+ if (red != green || red != blue)
+ rgb_error |= 1;
+ gray16 = (png_uint_16)((rc*red + gc*green + bc*blue)>>15);
+ *(dp++) = (png_byte)((gray16>>8) & 0xff);
+ *(dp++) = (png_byte)(gray16 & 0xff);
+ *(dp++) = *(sp++); /* alpha */
+ *(dp++) = *(sp++);
+ }
+ }
+ }
+ }
+ row_info->channels -= (png_byte)2;
+ row_info->color_type &= ~PNG_COLOR_MASK_COLOR;
+ row_info->pixel_depth = (png_byte)(row_info->channels *
+ row_info->bit_depth);
+ row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, row_width);
+ }
+ return rgb_error;
+}
+#endif
+
+/* Build a grayscale palette. Palette is assumed to be 1 << bit_depth
+ * large of png_color. This lets grayscale images be treated as
+ * paletted. Most useful for gamma correction and simplification
+ * of code.
+ */
+void PNGAPI
+png_build_grayscale_palette(int bit_depth, png_colorp palette)
+{
+ int num_palette;
+ int color_inc;
+ int i;
+ int v;
+
+ png_debug(1, "in png_do_build_grayscale_palette");
+
+ if (palette == NULL)
+ return;
+
+ switch (bit_depth)
+ {
+ case 1:
+ num_palette = 2;
+ color_inc = 0xff;
+ break;
+
+ case 2:
+ num_palette = 4;
+ color_inc = 0x55;
+ break;
+
+ case 4:
+ num_palette = 16;
+ color_inc = 0x11;
+ break;
+
+ case 8:
+ num_palette = 256;
+ color_inc = 1;
+ break;
+
+ default:
+ num_palette = 0;
+ color_inc = 0;
+ break;
+ }
+
+ for (i = 0, v = 0; i < num_palette; i++, v += color_inc)
+ {
+ palette[i].red = (png_byte)v;
+ palette[i].green = (png_byte)v;
+ palette[i].blue = (png_byte)v;
+ }
+}
+
+
+#ifdef PNG_READ_BACKGROUND_SUPPORTED
+/* Replace any alpha or transparency with the supplied background color.
+ * "background" is already in the screen gamma, while "background_1" is
+ * at a gamma of 1.0. Paletted files have already been taken care of.
+ */
+void /* PRIVATE */
+png_do_background(png_row_infop row_info, png_bytep row,
+ png_color_16p trans_color, png_color_16p background
+#ifdef PNG_READ_GAMMA_SUPPORTED
+ , png_color_16p background_1,
+ png_bytep gamma_table, png_bytep gamma_from_1, png_bytep gamma_to_1,
+ png_uint_16pp gamma_16, png_uint_16pp gamma_16_from_1,
+ png_uint_16pp gamma_16_to_1, int gamma_shift
+#endif
+ )
+{
+ png_bytep sp, dp;
+ png_uint_32 i;
+ png_uint_32 row_width=row_info->width;
+ int shift;
+
+ png_debug(1, "in png_do_background");
+
+ if (background != NULL &&
+ (!(row_info->color_type & PNG_COLOR_MASK_ALPHA) ||
+ (row_info->color_type != PNG_COLOR_TYPE_PALETTE && trans_color)))
+ {
+ switch (row_info->color_type)
+ {
+ case PNG_COLOR_TYPE_GRAY:
+ {
+ switch (row_info->bit_depth)
+ {
+ case 1:
+ {
+ sp = row;
+ shift = 7;
+ for (i = 0; i < row_width; i++)
+ {
+ if ((png_uint_16)((*sp >> shift) & 0x01)
+ == trans_color->gray)
+ {
+ *sp &= (png_byte)((0x7f7f >> (7 - shift)) & 0xff);
+ *sp |= (png_byte)(background->gray << shift);
+ }
+ if (!shift)
+ {
+ shift = 7;
+ sp++;
+ }
+ else
+ shift--;
+ }
+ break;
+ }
+
+ case 2:
+ {
+#ifdef PNG_READ_GAMMA_SUPPORTED
+ if (gamma_table != NULL)
+ {
+ sp = row;
+ shift = 6;
+ for (i = 0; i < row_width; i++)
+ {
+ if ((png_uint_16)((*sp >> shift) & 0x03)
+ == trans_color->gray)
+ {
+ *sp &= (png_byte)((0x3f3f >> (6 - shift)) & 0xff);
+ *sp |= (png_byte)(background->gray << shift);
+ }
+ else
+ {
+ png_byte p = (png_byte)((*sp >> shift) & 0x03);
+ png_byte g = (png_byte)((gamma_table [p | (p << 2) |
+ (p << 4) | (p << 6)] >> 6) & 0x03);
+ *sp &= (png_byte)((0x3f3f >> (6 - shift)) & 0xff);
+ *sp |= (png_byte)(g << shift);
+ }
+ if (!shift)
+ {
+ shift = 6;
+ sp++;
+ }
+ else
+ shift -= 2;
+ }
+ }
+ else
+#endif
+ {
+ sp = row;
+ shift = 6;
+ for (i = 0; i < row_width; i++)
+ {
+ if ((png_uint_16)((*sp >> shift) & 0x03)
+ == trans_color->gray)
+ {
+ *sp &= (png_byte)((0x3f3f >> (6 - shift)) & 0xff);
+ *sp |= (png_byte)(background->gray << shift);
+ }
+ if (!shift)
+ {
+ shift = 6;
+ sp++;
+ }
+ else
+ shift -= 2;
+ }
+ }
+ break;
+ }
+
+ case 4:
+ {
+#ifdef PNG_READ_GAMMA_SUPPORTED
+ if (gamma_table != NULL)
+ {
+ sp = row;
+ shift = 4;
+ for (i = 0; i < row_width; i++)
+ {
+ if ((png_uint_16)((*sp >> shift) & 0x0f)
+ == trans_color->gray)
+ {
+ *sp &= (png_byte)((0xf0f >> (4 - shift)) & 0xff);
+ *sp |= (png_byte)(background->gray << shift);
+ }
+ else
+ {
+ png_byte p = (png_byte)((*sp >> shift) & 0x0f);
+ png_byte g = (png_byte)((gamma_table[p |
+ (p << 4)] >> 4) & 0x0f);
+ *sp &= (png_byte)((0xf0f >> (4 - shift)) & 0xff);
+ *sp |= (png_byte)(g << shift);
+ }
+ if (!shift)
+ {
+ shift = 4;
+ sp++;
+ }
+ else
+ shift -= 4;
+ }
+ }
+ else
+#endif
+ {
+ sp = row;
+ shift = 4;
+ for (i = 0; i < row_width; i++)
+ {
+ if ((png_uint_16)((*sp >> shift) & 0x0f)
+ == trans_color->gray)
+ {
+ *sp &= (png_byte)((0xf0f >> (4 - shift)) & 0xff);
+ *sp |= (png_byte)(background->gray << shift);
+ }
+ if (!shift)
+ {
+ shift = 4;
+ sp++;
+ }
+ else
+ shift -= 4;
+ }
+ }
+ break;
+ }
+
+ case 8:
+ {
+#ifdef PNG_READ_GAMMA_SUPPORTED
+ if (gamma_table != NULL)
+ {
+ sp = row;
+ for (i = 0; i < row_width; i++, sp++)
+ {
+ if (*sp == trans_color->gray)
+ {
+ *sp = (png_byte)background->gray;
+ }
+ else
+ {
+ *sp = gamma_table[*sp];
+ }
+ }
+ }
+ else
+#endif
+ {
+ sp = row;
+ for (i = 0; i < row_width; i++, sp++)
+ {
+ if (*sp == trans_color->gray)
+ {
+ *sp = (png_byte)background->gray;
+ }
+ }
+ }
+ break;
+ }
+
+ case 16:
+ {
+#ifdef PNG_READ_GAMMA_SUPPORTED
+ if (gamma_16 != NULL)
+ {
+ sp = row;
+ for (i = 0; i < row_width; i++, sp += 2)
+ {
+ png_uint_16 v;
+
+ v = (png_uint_16)(((*sp) << 8) + *(sp + 1));
+ if (v == trans_color->gray)
+ {
+ /* Background is already in screen gamma */
+ *sp = (png_byte)((background->gray >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(background->gray & 0xff);
+ }
+ else
+ {
+ v = gamma_16[*(sp + 1) >> gamma_shift][*sp];
+ *sp = (png_byte)((v >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(v & 0xff);
+ }
+ }
+ }
+ else
+#endif
+ {
+ sp = row;
+ for (i = 0; i < row_width; i++, sp += 2)
+ {
+ png_uint_16 v;
+
+ v = (png_uint_16)(((*sp) << 8) + *(sp + 1));
+ if (v == trans_color->gray)
+ {
+ *sp = (png_byte)((background->gray >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(background->gray & 0xff);
+ }
+ }
+ }
+ break;
+ }
+ }
+ break;
+ }
+
+ case PNG_COLOR_TYPE_RGB:
+ {
+ if (row_info->bit_depth == 8)
+ {
+#ifdef PNG_READ_GAMMA_SUPPORTED
+ if (gamma_table != NULL)
+ {
+ sp = row;
+ for (i = 0; i < row_width; i++, sp += 3)
+ {
+ if (*sp == trans_color->red &&
+ *(sp + 1) == trans_color->green &&
+ *(sp + 2) == trans_color->blue)
+ {
+ *sp = (png_byte)background->red;
+ *(sp + 1) = (png_byte)background->green;
+ *(sp + 2) = (png_byte)background->blue;
+ }
+ else
+ {
+ *sp = gamma_table[*sp];
+ *(sp + 1) = gamma_table[*(sp + 1)];
+ *(sp + 2) = gamma_table[*(sp + 2)];
+ }
+ }
+ }
+ else
+#endif
+ {
+ sp = row;
+ for (i = 0; i < row_width; i++, sp += 3)
+ {
+ if (*sp == trans_color->red &&
+ *(sp + 1) == trans_color->green &&
+ *(sp + 2) == trans_color->blue)
+ {
+ *sp = (png_byte)background->red;
+ *(sp + 1) = (png_byte)background->green;
+ *(sp + 2) = (png_byte)background->blue;
+ }
+ }
+ }
+ }
+ else /* if (row_info->bit_depth == 16) */
+ {
+#ifdef PNG_READ_GAMMA_SUPPORTED
+ if (gamma_16 != NULL)
+ {
+ sp = row;
+ for (i = 0; i < row_width; i++, sp += 6)
+ {
+ png_uint_16 r = (png_uint_16)(((*sp) << 8) + *(sp + 1));
+ png_uint_16 g = (png_uint_16)(((*(sp+2)) << 8) + *(sp+3));
+ png_uint_16 b = (png_uint_16)(((*(sp+4)) << 8) + *(sp+5));
+ if (r == trans_color->red && g == trans_color->green &&
+ b == trans_color->blue)
+ {
+ /* Background is already in screen gamma */
+ *sp = (png_byte)((background->red >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(background->red & 0xff);
+ *(sp + 2) = (png_byte)((background->green >> 8) & 0xff);
+ *(sp + 3) = (png_byte)(background->green & 0xff);
+ *(sp + 4) = (png_byte)((background->blue >> 8) & 0xff);
+ *(sp + 5) = (png_byte)(background->blue & 0xff);
+ }
+ else
+ {
+ png_uint_16 v = gamma_16[*(sp + 1) >> gamma_shift][*sp];
+ *sp = (png_byte)((v >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(v & 0xff);
+ v = gamma_16[*(sp + 3) >> gamma_shift][*(sp + 2)];
+ *(sp + 2) = (png_byte)((v >> 8) & 0xff);
+ *(sp + 3) = (png_byte)(v & 0xff);
+ v = gamma_16[*(sp + 5) >> gamma_shift][*(sp + 4)];
+ *(sp + 4) = (png_byte)((v >> 8) & 0xff);
+ *(sp + 5) = (png_byte)(v & 0xff);
+ }
+ }
+ }
+ else
+#endif
+ {
+ sp = row;
+ for (i = 0; i < row_width; i++, sp += 6)
+ {
+ png_uint_16 r = (png_uint_16)(((*sp) << 8) + *(sp+1));
+ png_uint_16 g = (png_uint_16)(((*(sp+2)) << 8) + *(sp+3));
+ png_uint_16 b = (png_uint_16)(((*(sp+4)) << 8) + *(sp+5));
+
+ if (r == trans_color->red && g == trans_color->green &&
+ b == trans_color->blue)
+ {
+ *sp = (png_byte)((background->red >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(background->red & 0xff);
+ *(sp + 2) = (png_byte)((background->green >> 8) & 0xff);
+ *(sp + 3) = (png_byte)(background->green & 0xff);
+ *(sp + 4) = (png_byte)((background->blue >> 8) & 0xff);
+ *(sp + 5) = (png_byte)(background->blue & 0xff);
+ }
+ }
+ }
+ }
+ break;
+ }
+
+ case PNG_COLOR_TYPE_GRAY_ALPHA:
+ {
+ if (row_info->bit_depth == 8)
+ {
+#ifdef PNG_READ_GAMMA_SUPPORTED
+ if (gamma_to_1 != NULL && gamma_from_1 != NULL &&
+ gamma_table != NULL)
+ {
+ sp = row;
+ dp = row;
+ for (i = 0; i < row_width; i++, sp += 2, dp++)
+ {
+ png_uint_16 a = *(sp + 1);
+
+ if (a == 0xff)
+ {
+ *dp = gamma_table[*sp];
+ }
+ else if (a == 0)
+ {
+ /* Background is already in screen gamma */
+ *dp = (png_byte)background->gray;
+ }
+ else
+ {
+ png_byte v, w;
+
+ v = gamma_to_1[*sp];
+ png_composite(w, v, a, background_1->gray);
+ *dp = gamma_from_1[w];
+ }
+ }
+ }
+ else
+#endif
+ {
+ sp = row;
+ dp = row;
+ for (i = 0; i < row_width; i++, sp += 2, dp++)
+ {
+ png_byte a = *(sp + 1);
+
+ if (a == 0xff)
+ {
+ *dp = *sp;
+ }
+#ifdef PNG_READ_GAMMA_SUPPORTED
+ else if (a == 0)
+ {
+ *dp = (png_byte)background->gray;
+ }
+ else
+ {
+ png_composite(*dp, *sp, a, background_1->gray);
+ }
+#else
+ *dp = (png_byte)background->gray;
+#endif
+ }
+ }
+ }
+ else /* if (png_ptr->bit_depth == 16) */
+ {
+#ifdef PNG_READ_GAMMA_SUPPORTED
+ if (gamma_16 != NULL && gamma_16_from_1 != NULL &&
+ gamma_16_to_1 != NULL)
+ {
+ sp = row;
+ dp = row;
+ for (i = 0; i < row_width; i++, sp += 4, dp += 2)
+ {
+ png_uint_16 a = (png_uint_16)(((*(sp+2)) << 8) + *(sp+3));
+
+ if (a == (png_uint_16)0xffff)
+ {
+ png_uint_16 v;
+
+ v = gamma_16[*(sp + 1) >> gamma_shift][*sp];
+ *dp = (png_byte)((v >> 8) & 0xff);
+ *(dp + 1) = (png_byte)(v & 0xff);
+ }
+#ifdef PNG_READ_GAMMA_SUPPORTED
+ else if (a == 0)
+#else
+ else
+#endif
+ {
+ /* Background is already in screen gamma */
+ *dp = (png_byte)((background->gray >> 8) & 0xff);
+ *(dp + 1) = (png_byte)(background->gray & 0xff);
+ }
+#ifdef PNG_READ_GAMMA_SUPPORTED
+ else
+ {
+ png_uint_16 g, v, w;
+
+ g = gamma_16_to_1[*(sp + 1) >> gamma_shift][*sp];
+ png_composite_16(v, g, a, background_1->gray);
+ w = gamma_16_from_1[(v&0xff) >> gamma_shift][v >> 8];
+ *dp = (png_byte)((w >> 8) & 0xff);
+ *(dp + 1) = (png_byte)(w & 0xff);
+ }
+#endif
+ }
+ }
+ else
+#endif
+ {
+ sp = row;
+ dp = row;
+ for (i = 0; i < row_width; i++, sp += 4, dp += 2)
+ {
+ png_uint_16 a = (png_uint_16)(((*(sp+2)) << 8) + *(sp+3));
+ if (a == (png_uint_16)0xffff)
+ {
+ png_memcpy(dp, sp, 2);
+ }
+#ifdef PNG_READ_GAMMA_SUPPORTED
+ else if (a == 0)
+#else
+ else
+#endif
+ {
+ *dp = (png_byte)((background->gray >> 8) & 0xff);
+ *(dp + 1) = (png_byte)(background->gray & 0xff);
+ }
+#ifdef PNG_READ_GAMMA_SUPPORTED
+ else
+ {
+ png_uint_16 g, v;
+
+ g = (png_uint_16)(((*sp) << 8) + *(sp + 1));
+ png_composite_16(v, g, a, background_1->gray);
+ *dp = (png_byte)((v >> 8) & 0xff);
+ *(dp + 1) = (png_byte)(v & 0xff);
+ }
+#endif
+ }
+ }
+ }
+ break;
+ }
+
+ case PNG_COLOR_TYPE_RGB_ALPHA:
+ {
+ if (row_info->bit_depth == 8)
+ {
+#ifdef PNG_READ_GAMMA_SUPPORTED
+ if (gamma_to_1 != NULL && gamma_from_1 != NULL &&
+ gamma_table != NULL)
+ {
+ sp = row;
+ dp = row;
+ for (i = 0; i < row_width; i++, sp += 4, dp += 3)
+ {
+ png_byte a = *(sp + 3);
+
+ if (a == 0xff)
+ {
+ *dp = gamma_table[*sp];
+ *(dp + 1) = gamma_table[*(sp + 1)];
+ *(dp + 2) = gamma_table[*(sp + 2)];
+ }
+ else if (a == 0)
+ {
+ /* Background is already in screen gamma */
+ *dp = (png_byte)background->red;
+ *(dp + 1) = (png_byte)background->green;
+ *(dp + 2) = (png_byte)background->blue;
+ }
+ else
+ {
+ png_byte v, w;
+
+ v = gamma_to_1[*sp];
+ png_composite(w, v, a, background_1->red);
+ *dp = gamma_from_1[w];
+ v = gamma_to_1[*(sp + 1)];
+ png_composite(w, v, a, background_1->green);
+ *(dp + 1) = gamma_from_1[w];
+ v = gamma_to_1[*(sp + 2)];
+ png_composite(w, v, a, background_1->blue);
+ *(dp + 2) = gamma_from_1[w];
+ }
+ }
+ }
+ else
+#endif
+ {
+ sp = row;
+ dp = row;
+ for (i = 0; i < row_width; i++, sp += 4, dp += 3)
+ {
+ png_byte a = *(sp + 3);
+
+ if (a == 0xff)
+ {
+ *dp = *sp;
+ *(dp + 1) = *(sp + 1);
+ *(dp + 2) = *(sp + 2);
+ }
+ else if (a == 0)
+ {
+ *dp = (png_byte)background->red;
+ *(dp + 1) = (png_byte)background->green;
+ *(dp + 2) = (png_byte)background->blue;
+ }
+ else
+ {
+ png_composite(*dp, *sp, a, background->red);
+ png_composite(*(dp + 1), *(sp + 1), a,
+ background->green);
+ png_composite(*(dp + 2), *(sp + 2), a,
+ background->blue);
+ }
+ }
+ }
+ }
+ else /* if (row_info->bit_depth == 16) */
+ {
+#ifdef PNG_READ_GAMMA_SUPPORTED
+ if (gamma_16 != NULL && gamma_16_from_1 != NULL &&
+ gamma_16_to_1 != NULL)
+ {
+ sp = row;
+ dp = row;
+ for (i = 0; i < row_width; i++, sp += 8, dp += 6)
+ {
+ png_uint_16 a = (png_uint_16)(((png_uint_16)(*(sp + 6))
+ << 8) + (png_uint_16)(*(sp + 7)));
+ if (a == (png_uint_16)0xffff)
+ {
+ png_uint_16 v;
+
+ v = gamma_16[*(sp + 1) >> gamma_shift][*sp];
+ *dp = (png_byte)((v >> 8) & 0xff);
+ *(dp + 1) = (png_byte)(v & 0xff);
+ v = gamma_16[*(sp + 3) >> gamma_shift][*(sp + 2)];
+ *(dp + 2) = (png_byte)((v >> 8) & 0xff);
+ *(dp + 3) = (png_byte)(v & 0xff);
+ v = gamma_16[*(sp + 5) >> gamma_shift][*(sp + 4)];
+ *(dp + 4) = (png_byte)((v >> 8) & 0xff);
+ *(dp + 5) = (png_byte)(v & 0xff);
+ }
+ else if (a == 0)
+ {
+ /* Background is already in screen gamma */
+ *dp = (png_byte)((background->red >> 8) & 0xff);
+ *(dp + 1) = (png_byte)(background->red & 0xff);
+ *(dp + 2) = (png_byte)((background->green >> 8) & 0xff);
+ *(dp + 3) = (png_byte)(background->green & 0xff);
+ *(dp + 4) = (png_byte)((background->blue >> 8) & 0xff);
+ *(dp + 5) = (png_byte)(background->blue & 0xff);
+ }
+ else
+ {
+ png_uint_16 v, w, x;
+
+ v = gamma_16_to_1[*(sp + 1) >> gamma_shift][*sp];
+ png_composite_16(w, v, a, background_1->red);
+ x = gamma_16_from_1[((w&0xff) >> gamma_shift)][w >> 8];
+ *dp = (png_byte)((x >> 8) & 0xff);
+ *(dp + 1) = (png_byte)(x & 0xff);
+ v = gamma_16_to_1[*(sp + 3) >> gamma_shift][*(sp + 2)];
+ png_composite_16(w, v, a, background_1->green);
+ x = gamma_16_from_1[((w&0xff) >> gamma_shift)][w >> 8];
+ *(dp + 2) = (png_byte)((x >> 8) & 0xff);
+ *(dp + 3) = (png_byte)(x & 0xff);
+ v = gamma_16_to_1[*(sp + 5) >> gamma_shift][*(sp + 4)];
+ png_composite_16(w, v, a, background_1->blue);
+ x = gamma_16_from_1[(w & 0xff) >> gamma_shift][w >> 8];
+ *(dp + 4) = (png_byte)((x >> 8) & 0xff);
+ *(dp + 5) = (png_byte)(x & 0xff);
+ }
+ }
+ }
+ else
+#endif
+ {
+ sp = row;
+ dp = row;
+ for (i = 0; i < row_width; i++, sp += 8, dp += 6)
+ {
+ png_uint_16 a = (png_uint_16)(((png_uint_16)(*(sp + 6))
+ << 8) + (png_uint_16)(*(sp + 7)));
+ if (a == (png_uint_16)0xffff)
+ {
+ png_memcpy(dp, sp, 6);
+ }
+ else if (a == 0)
+ {
+ *dp = (png_byte)((background->red >> 8) & 0xff);
+ *(dp + 1) = (png_byte)(background->red & 0xff);
+ *(dp + 2) = (png_byte)((background->green >> 8) & 0xff);
+ *(dp + 3) = (png_byte)(background->green & 0xff);
+ *(dp + 4) = (png_byte)((background->blue >> 8) & 0xff);
+ *(dp + 5) = (png_byte)(background->blue & 0xff);
+ }
+ else
+ {
+ png_uint_16 v;
+
+ png_uint_16 r = (png_uint_16)(((*sp) << 8) + *(sp + 1));
+ png_uint_16 g = (png_uint_16)(((*(sp + 2)) << 8)
+ + *(sp + 3));
+ png_uint_16 b = (png_uint_16)(((*(sp + 4)) << 8)
+ + *(sp + 5));
+
+ png_composite_16(v, r, a, background->red);
+ *dp = (png_byte)((v >> 8) & 0xff);
+ *(dp + 1) = (png_byte)(v & 0xff);
+ png_composite_16(v, g, a, background->green);
+ *(dp + 2) = (png_byte)((v >> 8) & 0xff);
+ *(dp + 3) = (png_byte)(v & 0xff);
+ png_composite_16(v, b, a, background->blue);
+ *(dp + 4) = (png_byte)((v >> 8) & 0xff);
+ *(dp + 5) = (png_byte)(v & 0xff);
+ }
+ }
+ }
+ }
+ break;
+ }
+ }
+
+ if (row_info->color_type & PNG_COLOR_MASK_ALPHA)
+ {
+ row_info->color_type &= ~PNG_COLOR_MASK_ALPHA;
+ row_info->channels--;
+ row_info->pixel_depth = (png_byte)(row_info->channels *
+ row_info->bit_depth);
+ row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, row_width);
+ }
+ }
+}
+#endif
+
+#ifdef PNG_READ_GAMMA_SUPPORTED
+/* Gamma correct the image, avoiding the alpha channel. Make sure
+ * you do this after you deal with the transparency issue on grayscale
+ * or RGB images. If your bit depth is 8, use gamma_table, if it
+ * is 16, use gamma_16_table and gamma_shift. Build these with
+ * build_gamma_table().
+ */
+void /* PRIVATE */
+png_do_gamma(png_row_infop row_info, png_bytep row,
+ png_bytep gamma_table, png_uint_16pp gamma_16_table,
+ int gamma_shift)
+{
+ png_bytep sp;
+ png_uint_32 i;
+ png_uint_32 row_width=row_info->width;
+
+ png_debug(1, "in png_do_gamma");
+
+ if (
+ ((row_info->bit_depth <= 8 && gamma_table != NULL) ||
+ (row_info->bit_depth == 16 && gamma_16_table != NULL)))
+ {
+ switch (row_info->color_type)
+ {
+ case PNG_COLOR_TYPE_RGB:
+ {
+ if (row_info->bit_depth == 8)
+ {
+ sp = row;
+ for (i = 0; i < row_width; i++)
+ {
+ *sp = gamma_table[*sp];
+ sp++;
+ *sp = gamma_table[*sp];
+ sp++;
+ *sp = gamma_table[*sp];
+ sp++;
+ }
+ }
+ else /* if (row_info->bit_depth == 16) */
+ {
+ sp = row;
+ for (i = 0; i < row_width; i++)
+ {
+ png_uint_16 v;
+
+ v = gamma_16_table[*(sp + 1) >> gamma_shift][*sp];
+ *sp = (png_byte)((v >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(v & 0xff);
+ sp += 2;
+ v = gamma_16_table[*(sp + 1) >> gamma_shift][*sp];
+ *sp = (png_byte)((v >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(v & 0xff);
+ sp += 2;
+ v = gamma_16_table[*(sp + 1) >> gamma_shift][*sp];
+ *sp = (png_byte)((v >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(v & 0xff);
+ sp += 2;
+ }
+ }
+ break;
+ }
+
+ case PNG_COLOR_TYPE_RGB_ALPHA:
+ {
+ if (row_info->bit_depth == 8)
+ {
+ sp = row;
+ for (i = 0; i < row_width; i++)
+ {
+ *sp = gamma_table[*sp];
+ sp++;
+ *sp = gamma_table[*sp];
+ sp++;
+ *sp = gamma_table[*sp];
+ sp++;
+ sp++;
+ }
+ }
+ else /* if (row_info->bit_depth == 16) */
+ {
+ sp = row;
+ for (i = 0; i < row_width; i++)
+ {
+ png_uint_16 v = gamma_16_table[*(sp + 1) >> gamma_shift][*sp];
+ *sp = (png_byte)((v >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(v & 0xff);
+ sp += 2;
+ v = gamma_16_table[*(sp + 1) >> gamma_shift][*sp];
+ *sp = (png_byte)((v >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(v & 0xff);
+ sp += 2;
+ v = gamma_16_table[*(sp + 1) >> gamma_shift][*sp];
+ *sp = (png_byte)((v >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(v & 0xff);
+ sp += 4;
+ }
+ }
+ break;
+ }
+
+ case PNG_COLOR_TYPE_GRAY_ALPHA:
+ {
+ if (row_info->bit_depth == 8)
+ {
+ sp = row;
+ for (i = 0; i < row_width; i++)
+ {
+ *sp = gamma_table[*sp];
+ sp += 2;
+ }
+ }
+ else /* if (row_info->bit_depth == 16) */
+ {
+ sp = row;
+ for (i = 0; i < row_width; i++)
+ {
+ png_uint_16 v = gamma_16_table[*(sp + 1) >> gamma_shift][*sp];
+ *sp = (png_byte)((v >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(v & 0xff);
+ sp += 4;
+ }
+ }
+ break;
+ }
+
+ case PNG_COLOR_TYPE_GRAY:
+ {
+ if (row_info->bit_depth == 2)
+ {
+ sp = row;
+ for (i = 0; i < row_width; i += 4)
+ {
+ int a = *sp & 0xc0;
+ int b = *sp & 0x30;
+ int c = *sp & 0x0c;
+ int d = *sp & 0x03;
+
+ *sp = (png_byte)(
+ ((((int)gamma_table[a|(a>>2)|(a>>4)|(a>>6)]) ) & 0xc0)|
+ ((((int)gamma_table[(b<<2)|b|(b>>2)|(b>>4)])>>2) & 0x30)|
+ ((((int)gamma_table[(c<<4)|(c<<2)|c|(c>>2)])>>4) & 0x0c)|
+ ((((int)gamma_table[(d<<6)|(d<<4)|(d<<2)|d])>>6) ));
+ sp++;
+ }
+ }
+
+ if (row_info->bit_depth == 4)
+ {
+ sp = row;
+ for (i = 0; i < row_width; i += 2)
+ {
+ int msb = *sp & 0xf0;
+ int lsb = *sp & 0x0f;
+
+ *sp = (png_byte)((((int)gamma_table[msb | (msb >> 4)]) & 0xf0)
+ | (((int)gamma_table[(lsb << 4) | lsb]) >> 4));
+ sp++;
+ }
+ }
+
+ else if (row_info->bit_depth == 8)
+ {
+ sp = row;
+ for (i = 0; i < row_width; i++)
+ {
+ *sp = gamma_table[*sp];
+ sp++;
+ }
+ }
+
+ else if (row_info->bit_depth == 16)
+ {
+ sp = row;
+ for (i = 0; i < row_width; i++)
+ {
+ png_uint_16 v = gamma_16_table[*(sp + 1) >> gamma_shift][*sp];
+ *sp = (png_byte)((v >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(v & 0xff);
+ sp += 2;
+ }
+ }
+ break;
+ }
+ }
+ }
+}
+#endif
+
+#ifdef PNG_READ_EXPAND_SUPPORTED
+/* Expands a palette row to an RGB or RGBA row depending
+ * upon whether you supply trans and num_trans.
+ */
+void /* PRIVATE */
+png_do_expand_palette(png_row_infop row_info, png_bytep row,
+ png_colorp palette, png_bytep trans_alpha, int num_trans)
+{
+ int shift, value;
+ png_bytep sp, dp;
+ png_uint_32 i;
+ png_uint_32 row_width=row_info->width;
+
+ png_debug(1, "in png_do_expand_palette");
+
+ if (
+ row_info->color_type == PNG_COLOR_TYPE_PALETTE)
+ {
+ if (row_info->bit_depth < 8)
+ {
+ switch (row_info->bit_depth)
+ {
+ case 1:
+ {
+ sp = row + (png_size_t)((row_width - 1) >> 3);
+ dp = row + (png_size_t)row_width - 1;
+ shift = 7 - (int)((row_width + 7) & 0x07);
+ for (i = 0; i < row_width; i++)
+ {
+ if ((*sp >> shift) & 0x01)
+ *dp = 1;
+ else
+ *dp = 0;
+ if (shift == 7)
+ {
+ shift = 0;
+ sp--;
+ }
+ else
+ shift++;
+
+ dp--;
+ }
+ break;
+ }
+
+ case 2:
+ {
+ sp = row + (png_size_t)((row_width - 1) >> 2);
+ dp = row + (png_size_t)row_width - 1;
+ shift = (int)((3 - ((row_width + 3) & 0x03)) << 1);
+ for (i = 0; i < row_width; i++)
+ {
+ value = (*sp >> shift) & 0x03;
+ *dp = (png_byte)value;
+ if (shift == 6)
+ {
+ shift = 0;
+ sp--;
+ }
+ else
+ shift += 2;
+
+ dp--;
+ }
+ break;
+ }
+
+ case 4:
+ {
+ sp = row + (png_size_t)((row_width - 1) >> 1);
+ dp = row + (png_size_t)row_width - 1;
+ shift = (int)((row_width & 0x01) << 2);
+ for (i = 0; i < row_width; i++)
+ {
+ value = (*sp >> shift) & 0x0f;
+ *dp = (png_byte)value;
+ if (shift == 4)
+ {
+ shift = 0;
+ sp--;
+ }
+ else
+ shift += 4;
+
+ dp--;
+ }
+ break;
+ }
+ }
+ row_info->bit_depth = 8;
+ row_info->pixel_depth = 8;
+ row_info->rowbytes = row_width;
+ }
+ switch (row_info->bit_depth)
+ {
+ case 8:
+ {
+ if (trans_alpha != NULL)
+ {
+ sp = row + (png_size_t)row_width - 1;
+ dp = row + (png_size_t)(row_width << 2) - 1;
+
+ for (i = 0; i < row_width; i++)
+ {
+ if ((int)(*sp) >= num_trans)
+ *dp-- = 0xff;
+ else
+ *dp-- = trans_alpha[*sp];
+ *dp-- = palette[*sp].blue;
+ *dp-- = palette[*sp].green;
+ *dp-- = palette[*sp].red;
+ sp--;
+ }
+ row_info->bit_depth = 8;
+ row_info->pixel_depth = 32;
+ row_info->rowbytes = row_width * 4;
+ row_info->color_type = 6;
+ row_info->channels = 4;
+ }
+ else
+ {
+ sp = row + (png_size_t)row_width - 1;
+ dp = row + (png_size_t)(row_width * 3) - 1;
+
+ for (i = 0; i < row_width; i++)
+ {
+ *dp-- = palette[*sp].blue;
+ *dp-- = palette[*sp].green;
+ *dp-- = palette[*sp].red;
+ sp--;
+ }
+
+ row_info->bit_depth = 8;
+ row_info->pixel_depth = 24;
+ row_info->rowbytes = row_width * 3;
+ row_info->color_type = 2;
+ row_info->channels = 3;
+ }
+ break;
+ }
+ }
+ }
+}
+
+/* If the bit depth < 8, it is expanded to 8. Also, if the already
+ * expanded transparency value is supplied, an alpha channel is built.
+ */
+void /* PRIVATE */
+png_do_expand(png_row_infop row_info, png_bytep row,
+ png_color_16p trans_value)
+{
+ int shift, value;
+ png_bytep sp, dp;
+ png_uint_32 i;
+ png_uint_32 row_width=row_info->width;
+
+ png_debug(1, "in png_do_expand");
+
+ {
+ if (row_info->color_type == PNG_COLOR_TYPE_GRAY)
+ {
+ png_uint_16 gray = (png_uint_16)(trans_value ? trans_value->gray : 0);
+
+ if (row_info->bit_depth < 8)
+ {
+ switch (row_info->bit_depth)
+ {
+ case 1:
+ {
+ gray = (png_uint_16)((gray&0x01)*0xff);
+ sp = row + (png_size_t)((row_width - 1) >> 3);
+ dp = row + (png_size_t)row_width - 1;
+ shift = 7 - (int)((row_width + 7) & 0x07);
+ for (i = 0; i < row_width; i++)
+ {
+ if ((*sp >> shift) & 0x01)
+ *dp = 0xff;
+ else
+ *dp = 0;
+ if (shift == 7)
+ {
+ shift = 0;
+ sp--;
+ }
+ else
+ shift++;
+
+ dp--;
+ }
+ break;
+ }
+
+ case 2:
+ {
+ gray = (png_uint_16)((gray&0x03)*0x55);
+ sp = row + (png_size_t)((row_width - 1) >> 2);
+ dp = row + (png_size_t)row_width - 1;
+ shift = (int)((3 - ((row_width + 3) & 0x03)) << 1);
+ for (i = 0; i < row_width; i++)
+ {
+ value = (*sp >> shift) & 0x03;
+ *dp = (png_byte)(value | (value << 2) | (value << 4) |
+ (value << 6));
+ if (shift == 6)
+ {
+ shift = 0;
+ sp--;
+ }
+ else
+ shift += 2;
+
+ dp--;
+ }
+ break;
+ }
+
+ case 4:
+ {
+ gray = (png_uint_16)((gray&0x0f)*0x11);
+ sp = row + (png_size_t)((row_width - 1) >> 1);
+ dp = row + (png_size_t)row_width - 1;
+ shift = (int)((1 - ((row_width + 1) & 0x01)) << 2);
+ for (i = 0; i < row_width; i++)
+ {
+ value = (*sp >> shift) & 0x0f;
+ *dp = (png_byte)(value | (value << 4));
+ if (shift == 4)
+ {
+ shift = 0;
+ sp--;
+ }
+ else
+ shift = 4;
+
+ dp--;
+ }
+ break;
+ }
+ }
+
+ row_info->bit_depth = 8;
+ row_info->pixel_depth = 8;
+ row_info->rowbytes = row_width;
+ }
+
+ if (trans_value != NULL)
+ {
+ if (row_info->bit_depth == 8)
+ {
+ gray = gray & 0xff;
+ sp = row + (png_size_t)row_width - 1;
+ dp = row + (png_size_t)(row_width << 1) - 1;
+ for (i = 0; i < row_width; i++)
+ {
+ if (*sp == gray)
+ *dp-- = 0;
+ else
+ *dp-- = 0xff;
+ *dp-- = *sp--;
+ }
+ }
+
+ else if (row_info->bit_depth == 16)
+ {
+ png_byte gray_high = (gray >> 8) & 0xff;
+ png_byte gray_low = gray & 0xff;
+ sp = row + row_info->rowbytes - 1;
+ dp = row + (row_info->rowbytes << 1) - 1;
+ for (i = 0; i < row_width; i++)
+ {
+ if (*(sp - 1) == gray_high && *(sp) == gray_low)
+ {
+ *dp-- = 0;
+ *dp-- = 0;
+ }
+ else
+ {
+ *dp-- = 0xff;
+ *dp-- = 0xff;
+ }
+ *dp-- = *sp--;
+ *dp-- = *sp--;
+ }
+ }
+
+ row_info->color_type = PNG_COLOR_TYPE_GRAY_ALPHA;
+ row_info->channels = 2;
+ row_info->pixel_depth = (png_byte)(row_info->bit_depth << 1);
+ row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth,
+ row_width);
+ }
+ }
+ else if (row_info->color_type == PNG_COLOR_TYPE_RGB && trans_value)
+ {
+ if (row_info->bit_depth == 8)
+ {
+ png_byte red = trans_value->red & 0xff;
+ png_byte green = trans_value->green & 0xff;
+ png_byte blue = trans_value->blue & 0xff;
+ sp = row + (png_size_t)row_info->rowbytes - 1;
+ dp = row + (png_size_t)(row_width << 2) - 1;
+ for (i = 0; i < row_width; i++)
+ {
+ if (*(sp - 2) == red && *(sp - 1) == green && *(sp) == blue)
+ *dp-- = 0;
+ else
+ *dp-- = 0xff;
+ *dp-- = *sp--;
+ *dp-- = *sp--;
+ *dp-- = *sp--;
+ }
+ }
+ else if (row_info->bit_depth == 16)
+ {
+ png_byte red_high = (trans_value->red >> 8) & 0xff;
+ png_byte green_high = (trans_value->green >> 8) & 0xff;
+ png_byte blue_high = (trans_value->blue >> 8) & 0xff;
+ png_byte red_low = trans_value->red & 0xff;
+ png_byte green_low = trans_value->green & 0xff;
+ png_byte blue_low = trans_value->blue & 0xff;
+ sp = row + row_info->rowbytes - 1;
+ dp = row + (png_size_t)(row_width << 3) - 1;
+ for (i = 0; i < row_width; i++)
+ {
+ if (*(sp - 5) == red_high &&
+ *(sp - 4) == red_low &&
+ *(sp - 3) == green_high &&
+ *(sp - 2) == green_low &&
+ *(sp - 1) == blue_high &&
+ *(sp ) == blue_low)
+ {
+ *dp-- = 0;
+ *dp-- = 0;
+ }
+ else
+ {
+ *dp-- = 0xff;
+ *dp-- = 0xff;
+ }
+ *dp-- = *sp--;
+ *dp-- = *sp--;
+ *dp-- = *sp--;
+ *dp-- = *sp--;
+ *dp-- = *sp--;
+ *dp-- = *sp--;
+ }
+ }
+ row_info->color_type = PNG_COLOR_TYPE_RGB_ALPHA;
+ row_info->channels = 4;
+ row_info->pixel_depth = (png_byte)(row_info->bit_depth << 2);
+ row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, row_width);
+ }
+ }
+}
+#endif
+
+#ifdef PNG_READ_DITHER_SUPPORTED
+void /* PRIVATE */
+png_do_dither(png_row_infop row_info, png_bytep row,
+ png_bytep palette_lookup, png_bytep dither_lookup)
+{
+ png_bytep sp, dp;
+ png_uint_32 i;
+ png_uint_32 row_width=row_info->width;
+
+ png_debug(1, "in png_do_dither");
+
+ {
+ if (row_info->color_type == PNG_COLOR_TYPE_RGB &&
+ palette_lookup && row_info->bit_depth == 8)
+ {
+ int r, g, b, p;
+ sp = row;
+ dp = row;
+ for (i = 0; i < row_width; i++)
+ {
+ r = *sp++;
+ g = *sp++;
+ b = *sp++;
+
+ /* This looks real messy, but the compiler will reduce
+ * it down to a reasonable formula. For example, with
+ * 5 bits per color, we get:
+ * p = (((r >> 3) & 0x1f) << 10) |
+ * (((g >> 3) & 0x1f) << 5) |
+ * ((b >> 3) & 0x1f);
+ */
+ p = (((r >> (8 - PNG_DITHER_RED_BITS)) &
+ ((1 << PNG_DITHER_RED_BITS) - 1)) <<
+ (PNG_DITHER_GREEN_BITS + PNG_DITHER_BLUE_BITS)) |
+ (((g >> (8 - PNG_DITHER_GREEN_BITS)) &
+ ((1 << PNG_DITHER_GREEN_BITS) - 1)) <<
+ (PNG_DITHER_BLUE_BITS)) |
+ ((b >> (8 - PNG_DITHER_BLUE_BITS)) &
+ ((1 << PNG_DITHER_BLUE_BITS) - 1));
+
+ *dp++ = palette_lookup[p];
+ }
+ row_info->color_type = PNG_COLOR_TYPE_PALETTE;
+ row_info->channels = 1;
+ row_info->pixel_depth = row_info->bit_depth;
+ row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, row_width);
+ }
+ else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA &&
+ palette_lookup != NULL && row_info->bit_depth == 8)
+ {
+ int r, g, b, p;
+ sp = row;
+ dp = row;
+ for (i = 0; i < row_width; i++)
+ {
+ r = *sp++;
+ g = *sp++;
+ b = *sp++;
+ sp++;
+
+ p = (((r >> (8 - PNG_DITHER_RED_BITS)) &
+ ((1 << PNG_DITHER_RED_BITS) - 1)) <<
+ (PNG_DITHER_GREEN_BITS + PNG_DITHER_BLUE_BITS)) |
+ (((g >> (8 - PNG_DITHER_GREEN_BITS)) &
+ ((1 << PNG_DITHER_GREEN_BITS) - 1)) <<
+ (PNG_DITHER_BLUE_BITS)) |
+ ((b >> (8 - PNG_DITHER_BLUE_BITS)) &
+ ((1 << PNG_DITHER_BLUE_BITS) - 1));
+
+ *dp++ = palette_lookup[p];
+ }
+ row_info->color_type = PNG_COLOR_TYPE_PALETTE;
+ row_info->channels = 1;
+ row_info->pixel_depth = row_info->bit_depth;
+ row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, row_width);
+ }
+ else if (row_info->color_type == PNG_COLOR_TYPE_PALETTE &&
+ dither_lookup && row_info->bit_depth == 8)
+ {
+ sp = row;
+ for (i = 0; i < row_width; i++, sp++)
+ {
+ *sp = dither_lookup[*sp];
+ }
+ }
+ }
+}
+#endif
+
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+#ifdef PNG_READ_GAMMA_SUPPORTED
+static PNG_CONST int png_gamma_shift[] =
+ {0x10, 0x21, 0x42, 0x84, 0x110, 0x248, 0x550, 0xff0, 0x00};
+
+/* We build the 8- or 16-bit gamma tables here. Note that for 16-bit
+ * tables, we don't make a full table if we are reducing to 8-bit in
+ * the future. Note also how the gamma_16 tables are segmented so that
+ * we don't need to allocate > 64K chunks for a full 16-bit table.
+ *
+ * See the PNG extensions document for an integer algorithm for creating
+ * the gamma tables. Maybe we will implement that here someday.
+ *
+ * We should only reach this point if
+ *
+ * the file_gamma is known (i.e., the gAMA or sRGB chunk is present,
+ * or the application has provided a file_gamma)
+ *
+ * AND
+ * {
+ * the screen_gamma is known
+ *
+ * OR
+ *
+ * RGB_to_gray transformation is being performed
+ * }
+ *
+ * AND
+ * {
+ * the screen_gamma is different from the reciprocal of the
+ * file_gamma by more than the specified threshold
+ *
+ * OR
+ *
+ * a background color has been specified and the file_gamma
+ * and screen_gamma are not 1.0, within the specified threshold.
+ * }
+ */
+
+void /* PRIVATE */
+png_build_gamma_table(png_structp png_ptr, png_byte bit_depth)
+{
+ png_debug(1, "in png_build_gamma_table");
+
+ if (bit_depth <= 8)
+ {
+ int i;
+ double g;
+
+ if (png_ptr->screen_gamma > .000001)
+ g = 1.0 / (png_ptr->gamma * png_ptr->screen_gamma);
+
+ else
+ g = 1.0;
+
+ png_ptr->gamma_table = (png_bytep)png_malloc(png_ptr,
+ (png_uint_32)256);
+
+ for (i = 0; i < 256; i++)
+ {
+ png_ptr->gamma_table[i] = (png_byte)(pow((double)i / 255.0,
+ g) * 255.0 + .5);
+ }
+
+#if defined(PNG_READ_BACKGROUND_SUPPORTED) || \
+ defined(PNG_READ_RGB_TO_GRAY_SUPPORTED)
+ if (png_ptr->transformations & ((PNG_BACKGROUND) | PNG_RGB_TO_GRAY))
+ {
+
+ g = 1.0 / (png_ptr->gamma);
+
+ png_ptr->gamma_to_1 = (png_bytep)png_malloc(png_ptr,
+ (png_uint_32)256);
+
+ for (i = 0; i < 256; i++)
+ {
+ png_ptr->gamma_to_1[i] = (png_byte)(pow((double)i / 255.0,
+ g) * 255.0 + .5);
+ }
+
+
+ png_ptr->gamma_from_1 = (png_bytep)png_malloc(png_ptr,
+ (png_uint_32)256);
+
+ if (png_ptr->screen_gamma > 0.000001)
+ g = 1.0 / png_ptr->screen_gamma;
+
+ else
+ g = png_ptr->gamma; /* Probably doing rgb_to_gray */
+
+ for (i = 0; i < 256; i++)
+ {
+ png_ptr->gamma_from_1[i] = (png_byte)(pow((double)i / 255.0,
+ g) * 255.0 + .5);
+
+ }
+ }
+#endif /* PNG_READ_BACKGROUND_SUPPORTED || PNG_RGB_TO_GRAY_SUPPORTED */
+ }
+ else
+ {
+ double g;
+ int i, j, shift, num;
+ int sig_bit;
+ png_uint_32 ig;
+
+ if (png_ptr->color_type & PNG_COLOR_MASK_COLOR)
+ {
+ sig_bit = (int)png_ptr->sig_bit.red;
+
+ if ((int)png_ptr->sig_bit.green > sig_bit)
+ sig_bit = png_ptr->sig_bit.green;
+
+ if ((int)png_ptr->sig_bit.blue > sig_bit)
+ sig_bit = png_ptr->sig_bit.blue;
+ }
+ else
+ {
+ sig_bit = (int)png_ptr->sig_bit.gray;
+ }
+
+ if (sig_bit > 0)
+ shift = 16 - sig_bit;
+
+ else
+ shift = 0;
+
+ if (png_ptr->transformations & PNG_16_TO_8)
+ {
+ if (shift < (16 - PNG_MAX_GAMMA_8))
+ shift = (16 - PNG_MAX_GAMMA_8);
+ }
+
+ if (shift > 8)
+ shift = 8;
+
+ if (shift < 0)
+ shift = 0;
+
+ png_ptr->gamma_shift = (png_byte)shift;
+
+ num = (1 << (8 - shift));
+
+ if (png_ptr->screen_gamma > .000001)
+ g = 1.0 / (png_ptr->gamma * png_ptr->screen_gamma);
+ else
+ g = 1.0;
+
+ png_ptr->gamma_16_table = (png_uint_16pp)png_calloc(png_ptr,
+ (png_uint_32)(num * png_sizeof(png_uint_16p)));
+
+ if (png_ptr->transformations & (PNG_16_TO_8 | PNG_BACKGROUND))
+ {
+ double fin, fout;
+ png_uint_32 last, max;
+
+ for (i = 0; i < num; i++)
+ {
+ png_ptr->gamma_16_table[i] = (png_uint_16p)png_malloc(png_ptr,
+ (png_uint_32)(256 * png_sizeof(png_uint_16)));
+ }
+
+ g = 1.0 / g;
+ last = 0;
+ for (i = 0; i < 256; i++)
+ {
+ fout = ((double)i + 0.5) / 256.0;
+ fin = pow(fout, g);
+ max = (png_uint_32)(fin * (double)((png_uint_32)num << 8));
+ while (last <= max)
+ {
+ png_ptr->gamma_16_table[(int)(last & (0xff >> shift))]
+ [(int)(last >> (8 - shift))] = (png_uint_16)(
+ (png_uint_16)i | ((png_uint_16)i << 8));
+ last++;
+ }
+ }
+ while (last < ((png_uint_32)num << 8))
+ {
+ png_ptr->gamma_16_table[(int)(last & (0xff >> shift))]
+ [(int)(last >> (8 - shift))] = (png_uint_16)65535L;
+ last++;
+ }
+ }
+ else
+ {
+ for (i = 0; i < num; i++)
+ {
+ png_ptr->gamma_16_table[i] = (png_uint_16p)png_malloc(png_ptr,
+ (png_uint_32)(256 * png_sizeof(png_uint_16)));
+
+ ig = (((png_uint_32)i * (png_uint_32)png_gamma_shift[shift]) >> 4);
+
+ for (j = 0; j < 256; j++)
+ {
+ png_ptr->gamma_16_table[i][j] =
+ (png_uint_16)(pow((double)(ig + ((png_uint_32)j << 8)) /
+ 65535.0, g) * 65535.0 + .5);
+ }
+ }
+ }
+
+#if defined(PNG_READ_BACKGROUND_SUPPORTED) || \
+ defined(PNG_READ_RGB_TO_GRAY_SUPPORTED)
+ if (png_ptr->transformations & (PNG_BACKGROUND | PNG_RGB_TO_GRAY))
+ {
+
+ g = 1.0 / (png_ptr->gamma);
+
+ png_ptr->gamma_16_to_1 = (png_uint_16pp)png_calloc(png_ptr,
+ (png_uint_32)(num * png_sizeof(png_uint_16p )));
+
+ for (i = 0; i < num; i++)
+ {
+ png_ptr->gamma_16_to_1[i] = (png_uint_16p)png_malloc(png_ptr,
+ (png_uint_32)(256 * png_sizeof(png_uint_16)));
+
+ ig = (((png_uint_32)i *
+ (png_uint_32)png_gamma_shift[shift]) >> 4);
+ for (j = 0; j < 256; j++)
+ {
+ png_ptr->gamma_16_to_1[i][j] =
+ (png_uint_16)(pow((double)(ig + ((png_uint_32)j << 8)) /
+ 65535.0, g) * 65535.0 + .5);
+ }
+ }
+
+ if (png_ptr->screen_gamma > 0.000001)
+ g = 1.0 / png_ptr->screen_gamma;
+
+ else
+ g = png_ptr->gamma; /* Probably doing rgb_to_gray */
+
+ png_ptr->gamma_16_from_1 = (png_uint_16pp)png_calloc(png_ptr,
+ (png_uint_32)(num * png_sizeof(png_uint_16p)));
+
+ for (i = 0; i < num; i++)
+ {
+ png_ptr->gamma_16_from_1[i] = (png_uint_16p)png_malloc(png_ptr,
+ (png_uint_32)(256 * png_sizeof(png_uint_16)));
+
+ ig = (((png_uint_32)i *
+ (png_uint_32)png_gamma_shift[shift]) >> 4);
+
+ for (j = 0; j < 256; j++)
+ {
+ png_ptr->gamma_16_from_1[i][j] =
+ (png_uint_16)(pow((double)(ig + ((png_uint_32)j << 8)) /
+ 65535.0, g) * 65535.0 + .5);
+ }
+ }
+ }
+#endif /* PNG_READ_BACKGROUND_SUPPORTED || PNG_RGB_TO_GRAY_SUPPORTED */
+ }
+}
+#endif
+/* To do: install integer version of png_build_gamma_table here */
+#endif
+
+#ifdef PNG_MNG_FEATURES_SUPPORTED
+/* Undoes intrapixel differencing */
+void /* PRIVATE */
+png_do_read_intrapixel(png_row_infop row_info, png_bytep row)
+{
+ png_debug(1, "in png_do_read_intrapixel");
+
+ if (
+ (row_info->color_type & PNG_COLOR_MASK_COLOR))
+ {
+ int bytes_per_pixel;
+ png_uint_32 row_width = row_info->width;
+ if (row_info->bit_depth == 8)
+ {
+ png_bytep rp;
+ png_uint_32 i;
+
+ if (row_info->color_type == PNG_COLOR_TYPE_RGB)
+ bytes_per_pixel = 3;
+
+ else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
+ bytes_per_pixel = 4;
+
+ else
+ return;
+
+ for (i = 0, rp = row; i < row_width; i++, rp += bytes_per_pixel)
+ {
+ *(rp) = (png_byte)((256 + *rp + *(rp+1))&0xff);
+ *(rp+2) = (png_byte)((256 + *(rp+2) + *(rp+1))&0xff);
+ }
+ }
+ else if (row_info->bit_depth == 16)
+ {
+ png_bytep rp;
+ png_uint_32 i;
+
+ if (row_info->color_type == PNG_COLOR_TYPE_RGB)
+ bytes_per_pixel = 6;
+
+ else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
+ bytes_per_pixel = 8;
+
+ else
+ return;
+
+ for (i = 0, rp = row; i < row_width; i++, rp += bytes_per_pixel)
+ {
+ png_uint_32 s0 = (*(rp ) << 8) | *(rp + 1);
+ png_uint_32 s1 = (*(rp + 2) << 8) | *(rp + 3);
+ png_uint_32 s2 = (*(rp + 4) << 8) | *(rp + 5);
+ png_uint_32 red = (png_uint_32)((s0 + s1 + 65536L) & 0xffffL);
+ png_uint_32 blue = (png_uint_32)((s2 + s1 + 65536L) & 0xffffL);
+ *(rp ) = (png_byte)((red >> 8) & 0xff);
+ *(rp+1) = (png_byte)(red & 0xff);
+ *(rp+4) = (png_byte)((blue >> 8) & 0xff);
+ *(rp+5) = (png_byte)(blue & 0xff);
+ }
+ }
+ }
+}
+#endif /* PNG_MNG_FEATURES_SUPPORTED */
+#endif /* PNG_READ_SUPPORTED */
diff --git a/src/3rdparty/libpng/pngrutil.c b/src/3rdparty/libpng/pngrutil.c
new file mode 100644
index 0000000..d971e8f
--- /dev/null
+++ b/src/3rdparty/libpng/pngrutil.c
@@ -0,0 +1,3336 @@
+
+/* pngrutil.c - utilities to read a PNG file
+ *
+ * Last changed in libpng 1.4.0 [January 3, 2010]
+ * Copyright (c) 1998-2010 Glenn Randers-Pehrson
+ * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
+ * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ *
+ * This file contains routines that are only called from within
+ * libpng itself during the course of reading an image.
+ */
+
+#define PNG_NO_PEDANTIC_WARNINGS
+#include "png.h"
+#ifdef PNG_READ_SUPPORTED
+#include "pngpriv.h"
+
+# define png_strtod(p,a,b) strtod(a,b)
+png_uint_32 PNGAPI
+png_get_uint_31(png_structp png_ptr, png_bytep buf)
+{
+ png_uint_32 i = png_get_uint_32(buf);
+ if (i > PNG_UINT_31_MAX)
+ png_error(png_ptr, "PNG unsigned integer out of range");
+ return (i);
+}
+#ifndef PNG_USE_READ_MACROS
+/* Grab an unsigned 32-bit integer from a buffer in big-endian format. */
+png_uint_32 PNGAPI
+png_get_uint_32(png_bytep buf)
+{
+ png_uint_32 i = ((png_uint_32)(*buf) << 24) +
+ ((png_uint_32)(*(buf + 1)) << 16) +
+ ((png_uint_32)(*(buf + 2)) << 8) +
+ (png_uint_32)(*(buf + 3));
+
+ return (i);
+}
+
+/* Grab a signed 32-bit integer from a buffer in big-endian format. The
+ * data is stored in the PNG file in two's complement format, and it is
+ * assumed that the machine format for signed integers is the same.
+ */
+png_int_32 PNGAPI
+png_get_int_32(png_bytep buf)
+{
+ png_int_32 i = ((png_int_32)(*buf) << 24) +
+ ((png_int_32)(*(buf + 1)) << 16) +
+ ((png_int_32)(*(buf + 2)) << 8) +
+ (png_int_32)(*(buf + 3));
+
+ return (i);
+}
+
+/* Grab an unsigned 16-bit integer from a buffer in big-endian format. */
+png_uint_16 PNGAPI
+png_get_uint_16(png_bytep buf)
+{
+ png_uint_16 i = (png_uint_16)(((png_uint_16)(*buf) << 8) +
+ (png_uint_16)(*(buf + 1)));
+
+ return (i);
+}
+#endif /* PNG_USE_READ_MACROS */
+
+/* Read the chunk header (length + type name).
+ * Put the type name into png_ptr->chunk_name, and return the length.
+ */
+png_uint_32 /* PRIVATE */
+png_read_chunk_header(png_structp png_ptr)
+{
+ png_byte buf[8];
+ png_uint_32 length;
+
+#ifdef PNG_IO_STATE_SUPPORTED
+ /* Inform the I/O callback that the chunk header is being read.
+ * PNG_IO_CHUNK_HDR requires a single I/O call.
+ */
+ png_ptr->io_state = PNG_IO_READING | PNG_IO_CHUNK_HDR;
+#endif
+
+ /* Read the length and the chunk name */
+ png_read_data(png_ptr, buf, 8);
+ length = png_get_uint_31(png_ptr, buf);
+
+ /* Put the chunk name into png_ptr->chunk_name */
+ png_memcpy(png_ptr->chunk_name, buf + 4, 4);
+
+ png_debug2(0, "Reading %s chunk, length = %lu",
+ png_ptr->chunk_name, length);
+
+ /* Reset the crc and run it over the chunk name */
+ png_reset_crc(png_ptr);
+ png_calculate_crc(png_ptr, png_ptr->chunk_name, 4);
+
+ /* Check to see if chunk name is valid */
+ png_check_chunk_name(png_ptr, png_ptr->chunk_name);
+
+#ifdef PNG_IO_STATE_SUPPORTED
+ /* Inform the I/O callback that chunk data will (possibly) be read.
+ * PNG_IO_CHUNK_DATA does NOT require a specific number of I/O calls.
+ */
+ png_ptr->io_state = PNG_IO_READING | PNG_IO_CHUNK_DATA;
+#endif
+
+ return length;
+}
+
+/* Read data, and (optionally) run it through the CRC. */
+void /* PRIVATE */
+png_crc_read(png_structp png_ptr, png_bytep buf, png_size_t length)
+{
+ if (png_ptr == NULL)
+ return;
+ png_read_data(png_ptr, buf, length);
+ png_calculate_crc(png_ptr, buf, length);
+}
+
+/* Optionally skip data and then check the CRC. Depending on whether we
+ * are reading a ancillary or critical chunk, and how the program has set
+ * things up, we may calculate the CRC on the data and print a message.
+ * Returns '1' if there was a CRC error, '0' otherwise.
+ */
+int /* PRIVATE */
+png_crc_finish(png_structp png_ptr, png_uint_32 skip)
+{
+ png_size_t i;
+ png_size_t istop = png_ptr->zbuf_size;
+
+ for (i = (png_size_t)skip; i > istop; i -= istop)
+ {
+ png_crc_read(png_ptr, png_ptr->zbuf, png_ptr->zbuf_size);
+ }
+ if (i)
+ {
+ png_crc_read(png_ptr, png_ptr->zbuf, i);
+ }
+
+ if (png_crc_error(png_ptr))
+ {
+ if (((png_ptr->chunk_name[0] & 0x20) && /* Ancillary */
+ !(png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_NOWARN)) ||
+ (!(png_ptr->chunk_name[0] & 0x20) && /* Critical */
+ (png_ptr->flags & PNG_FLAG_CRC_CRITICAL_USE)))
+ {
+ png_chunk_warning(png_ptr, "CRC error");
+ }
+ else
+ {
+ png_chunk_benign_error(png_ptr, "CRC error");
+ return (0);
+ }
+ return (1);
+ }
+
+ return (0);
+}
+
+/* Compare the CRC stored in the PNG file with that calculated by libpng from
+ * the data it has read thus far.
+ */
+int /* PRIVATE */
+png_crc_error(png_structp png_ptr)
+{
+ png_byte crc_bytes[4];
+ png_uint_32 crc;
+ int need_crc = 1;
+
+ if (png_ptr->chunk_name[0] & 0x20) /* ancillary */
+ {
+ if ((png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_MASK) ==
+ (PNG_FLAG_CRC_ANCILLARY_USE | PNG_FLAG_CRC_ANCILLARY_NOWARN))
+ need_crc = 0;
+ }
+ else /* critical */
+ {
+ if (png_ptr->flags & PNG_FLAG_CRC_CRITICAL_IGNORE)
+ need_crc = 0;
+ }
+
+#ifdef PNG_IO_STATE_SUPPORTED
+ /* Inform the I/O callback that the chunk CRC is being read */
+ /* PNG_IO_CHUNK_CRC requires the I/O to be done at once */
+ png_ptr->io_state = PNG_IO_READING | PNG_IO_CHUNK_CRC;
+#endif
+
+ png_read_data(png_ptr, crc_bytes, 4);
+
+ if (need_crc)
+ {
+ crc = png_get_uint_32(crc_bytes);
+ return ((int)(crc != png_ptr->crc));
+ }
+ else
+ return (0);
+}
+
+#if defined(PNG_READ_zTXt_SUPPORTED) || defined(PNG_READ_iTXt_SUPPORTED) || \
+ defined(PNG_READ_iCCP_SUPPORTED)
+/*
+ * Decompress trailing data in a chunk. The assumption is that chunkdata
+ * points at an allocated area holding the contents of a chunk with a
+ * trailing compressed part. What we get back is an allocated area
+ * holding the original prefix part and an uncompressed version of the
+ * trailing part (the malloc area passed in is freed).
+ */
+void /* PRIVATE */
+png_decompress_chunk(png_structp png_ptr, int comp_type,
+ png_size_t chunklength,
+ png_size_t prefix_size, png_size_t *newlength)
+{
+ static PNG_CONST char msg[] = "Error decoding compressed chunk";
+ png_charp text;
+ png_size_t text_size;
+
+ if (comp_type == PNG_COMPRESSION_TYPE_BASE)
+ {
+ int ret = Z_OK;
+ png_ptr->zstream.next_in = (png_bytep)(png_ptr->chunkdata + prefix_size);
+ png_ptr->zstream.avail_in = (uInt)(chunklength - prefix_size);
+ png_ptr->zstream.next_out = png_ptr->zbuf;
+ png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size;
+
+ text_size = 0;
+ text = NULL;
+
+ while (png_ptr->zstream.avail_in)
+ {
+ ret = inflate(&png_ptr->zstream, Z_PARTIAL_FLUSH);
+ if (ret != Z_OK && ret != Z_STREAM_END)
+ {
+ if (png_ptr->zstream.msg != NULL)
+ png_warning(png_ptr, png_ptr->zstream.msg);
+ else
+ png_warning(png_ptr, msg);
+ inflateReset(&png_ptr->zstream);
+ png_ptr->zstream.avail_in = 0;
+
+ if (text == NULL)
+ {
+ text_size = prefix_size + png_sizeof(msg) + 1;
+ text = (png_charp)png_malloc_warn(png_ptr, text_size);
+ if (text == NULL)
+ {
+ png_free(png_ptr, png_ptr->chunkdata);
+ png_ptr->chunkdata = NULL;
+ png_error(png_ptr, "Not enough memory to decompress chunk");
+ }
+ png_memcpy(text, png_ptr->chunkdata, prefix_size);
+ }
+
+ text[text_size - 1] = 0x00;
+
+ /* Copy what we can of the error message into the text chunk */
+ text_size = (png_size_t)(chunklength -
+ (text - png_ptr->chunkdata) - 1);
+ if (text_size > png_sizeof(msg))
+ text_size = png_sizeof(msg);
+ png_memcpy(text + prefix_size, msg, text_size);
+ break;
+ }
+ if (!png_ptr->zstream.avail_out || ret == Z_STREAM_END)
+ {
+ if (text == NULL)
+ {
+ text_size = prefix_size +
+ png_ptr->zbuf_size - png_ptr->zstream.avail_out;
+ text = (png_charp)png_malloc_warn(png_ptr, text_size + 1);
+ if (text == NULL)
+ {
+ png_free(png_ptr, png_ptr->chunkdata);
+ png_ptr->chunkdata = NULL;
+ png_error(png_ptr,
+ "Not enough memory to decompress chunk");
+ }
+ png_memcpy(text + prefix_size, png_ptr->zbuf,
+ text_size - prefix_size);
+ png_memcpy(text, png_ptr->chunkdata, prefix_size);
+ *(text + text_size) = 0x00;
+ }
+ else
+ {
+ png_charp tmp;
+
+ tmp = text;
+#ifdef PNG_SET_USER_LIMITS_SUPPORTED
+ if ((png_ptr->user_chunk_cache_max != 0) &&
+ (--png_ptr->user_chunk_cache_max == 0))
+ {
+ png_warning(png_ptr, "No space in chunk cache");
+ text = NULL;
+ }
+
+ else
+ {
+#endif
+ text = (png_charp)png_malloc_warn(png_ptr,
+ (png_size_t)(text_size +
+ png_ptr->zbuf_size - png_ptr->zstream.avail_out + 1));
+#ifdef PNG_SET_USER_LIMITS_SUPPORTED
+ }
+#endif
+ if (text == NULL)
+ {
+ png_free(png_ptr, tmp);
+ png_free(png_ptr, png_ptr->chunkdata);
+ png_ptr->chunkdata = NULL;
+ png_error(png_ptr,
+ "Not enough memory to decompress chunk");
+ }
+ png_memcpy(text, tmp, text_size);
+ png_free(png_ptr, tmp);
+ png_memcpy(text + text_size, png_ptr->zbuf,
+ (png_ptr->zbuf_size - png_ptr->zstream.avail_out));
+ text_size += png_ptr->zbuf_size - png_ptr->zstream.avail_out;
+ *(text + text_size) = 0x00;
+ }
+ if (ret == Z_STREAM_END)
+ break;
+ else
+ {
+ png_ptr->zstream.next_out = png_ptr->zbuf;
+ png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size;
+ }
+ }
+ }
+ if (ret != Z_STREAM_END)
+ {
+#ifdef PNG_STDIO_SUPPORTED
+ char umsg[52];
+
+ if (ret == Z_BUF_ERROR)
+ png_snprintf(umsg, 52,
+ "Buffer error in compressed datastream in %s chunk",
+ png_ptr->chunk_name);
+
+ else if (ret == Z_DATA_ERROR)
+ png_snprintf(umsg, 52,
+ "Data error in compressed datastream in %s chunk",
+ png_ptr->chunk_name);
+
+ else
+ png_snprintf(umsg, 52,
+ "Incomplete compressed datastream in %s chunk",
+ png_ptr->chunk_name);
+
+ png_warning(png_ptr, umsg);
+#else
+ png_warning(png_ptr,
+ "Incomplete compressed datastream in chunk other than IDAT");
+#endif
+ text_size = prefix_size;
+ if (text == NULL)
+ {
+ text = (png_charp)png_malloc_warn(png_ptr, text_size+1);
+ if (text == NULL)
+ {
+ png_free(png_ptr, png_ptr->chunkdata);
+ png_ptr->chunkdata = NULL;
+ png_error(png_ptr, "Not enough memory for text");
+ }
+ png_memcpy(text, png_ptr->chunkdata, prefix_size);
+ }
+ *(text + text_size) = 0x00;
+ }
+
+ inflateReset(&png_ptr->zstream);
+ png_ptr->zstream.avail_in = 0;
+
+ png_free(png_ptr, png_ptr->chunkdata);
+ png_ptr->chunkdata = text;
+ *newlength=text_size;
+ }
+ else /* if (comp_type != PNG_COMPRESSION_TYPE_BASE) */
+ {
+#ifdef PNG_STDIO_SUPPORTED
+ char umsg[50];
+
+ png_snprintf(umsg, 50, "Unknown zTXt compression type %d", comp_type);
+ png_warning(png_ptr, umsg);
+#else
+ png_warning(png_ptr, "Unknown zTXt compression type");
+#endif
+
+ *(png_ptr->chunkdata + prefix_size) = 0x00;
+ *newlength = prefix_size;
+ }
+}
+#endif
+
+/* Read and check the IDHR chunk */
+void /* PRIVATE */
+png_handle_IHDR(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
+{
+ png_byte buf[13];
+ png_uint_32 width, height;
+ int bit_depth, color_type, compression_type, filter_type;
+ int interlace_type;
+
+ png_debug(1, "in png_handle_IHDR");
+
+ if (png_ptr->mode & PNG_HAVE_IHDR)
+ png_error(png_ptr, "Out of place IHDR");
+
+ /* Check the length */
+ if (length != 13)
+ png_error(png_ptr, "Invalid IHDR chunk");
+
+ png_ptr->mode |= PNG_HAVE_IHDR;
+
+ png_crc_read(png_ptr, buf, 13);
+ png_crc_finish(png_ptr, 0);
+
+ width = png_get_uint_31(png_ptr, buf);
+ height = png_get_uint_31(png_ptr, buf + 4);
+ bit_depth = buf[8];
+ color_type = buf[9];
+ compression_type = buf[10];
+ filter_type = buf[11];
+ interlace_type = buf[12];
+
+ /* Set internal variables */
+ png_ptr->width = width;
+ png_ptr->height = height;
+ png_ptr->bit_depth = (png_byte)bit_depth;
+ png_ptr->interlaced = (png_byte)interlace_type;
+ png_ptr->color_type = (png_byte)color_type;
+#ifdef PNG_MNG_FEATURES_SUPPORTED
+ png_ptr->filter_type = (png_byte)filter_type;
+#endif
+ png_ptr->compression_type = (png_byte)compression_type;
+
+ /* Find number of channels */
+ switch (png_ptr->color_type)
+ {
+ case PNG_COLOR_TYPE_GRAY:
+ case PNG_COLOR_TYPE_PALETTE:
+ png_ptr->channels = 1;
+ break;
+
+ case PNG_COLOR_TYPE_RGB:
+ png_ptr->channels = 3;
+ break;
+
+ case PNG_COLOR_TYPE_GRAY_ALPHA:
+ png_ptr->channels = 2;
+ break;
+
+ case PNG_COLOR_TYPE_RGB_ALPHA:
+ png_ptr->channels = 4;
+ break;
+ }
+
+ /* Set up other useful info */
+ png_ptr->pixel_depth = (png_byte)(png_ptr->bit_depth *
+ png_ptr->channels);
+ png_ptr->rowbytes = PNG_ROWBYTES(png_ptr->pixel_depth, png_ptr->width);
+ png_debug1(3, "bit_depth = %d", png_ptr->bit_depth);
+ png_debug1(3, "channels = %d", png_ptr->channels);
+ png_debug1(3, "rowbytes = %lu", png_ptr->rowbytes);
+ png_set_IHDR(png_ptr, info_ptr, width, height, bit_depth,
+ color_type, interlace_type, compression_type, filter_type);
+}
+
+/* Read and check the palette */
+void /* PRIVATE */
+png_handle_PLTE(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
+{
+ png_color palette[PNG_MAX_PALETTE_LENGTH];
+ int num, i;
+#ifdef PNG_POINTER_INDEXING_SUPPORTED
+ png_colorp pal_ptr;
+#endif
+
+ png_debug(1, "in png_handle_PLTE");
+
+ if (!(png_ptr->mode & PNG_HAVE_IHDR))
+ png_error(png_ptr, "Missing IHDR before PLTE");
+
+ else if (png_ptr->mode & PNG_HAVE_IDAT)
+ {
+ png_warning(png_ptr, "Invalid PLTE after IDAT");
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+
+ else if (png_ptr->mode & PNG_HAVE_PLTE)
+ png_error(png_ptr, "Duplicate PLTE chunk");
+
+ png_ptr->mode |= PNG_HAVE_PLTE;
+
+ if (!(png_ptr->color_type&PNG_COLOR_MASK_COLOR))
+ {
+ png_warning(png_ptr,
+ "Ignoring PLTE chunk in grayscale PNG");
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+#ifndef PNG_READ_OPT_PLTE_SUPPORTED
+ if (png_ptr->color_type != PNG_COLOR_TYPE_PALETTE)
+ {
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+#endif
+
+ if (length > 3*PNG_MAX_PALETTE_LENGTH || length % 3)
+ {
+ if (png_ptr->color_type != PNG_COLOR_TYPE_PALETTE)
+ {
+ png_warning(png_ptr, "Invalid palette chunk");
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+
+ else
+ {
+ png_error(png_ptr, "Invalid palette chunk");
+ }
+ }
+
+ num = (int)length / 3;
+
+#ifdef PNG_POINTER_INDEXING_SUPPORTED
+ for (i = 0, pal_ptr = palette; i < num; i++, pal_ptr++)
+ {
+ png_byte buf[3];
+
+ png_crc_read(png_ptr, buf, 3);
+ pal_ptr->red = buf[0];
+ pal_ptr->green = buf[1];
+ pal_ptr->blue = buf[2];
+ }
+#else
+ for (i = 0; i < num; i++)
+ {
+ png_byte buf[3];
+
+ png_crc_read(png_ptr, buf, 3);
+ /* Don't depend upon png_color being any order */
+ palette[i].red = buf[0];
+ palette[i].green = buf[1];
+ palette[i].blue = buf[2];
+ }
+#endif
+
+ /* If we actually NEED the PLTE chunk (ie for a paletted image), we do
+ * whatever the normal CRC configuration tells us. However, if we
+ * have an RGB image, the PLTE can be considered ancillary, so
+ * we will act as though it is.
+ */
+#ifndef PNG_READ_OPT_PLTE_SUPPORTED
+ if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
+#endif
+ {
+ png_crc_finish(png_ptr, 0);
+ }
+#ifndef PNG_READ_OPT_PLTE_SUPPORTED
+ else if (png_crc_error(png_ptr)) /* Only if we have a CRC error */
+ {
+ /* If we don't want to use the data from an ancillary chunk,
+ we have two options: an error abort, or a warning and we
+ ignore the data in this chunk (which should be OK, since
+ it's considered ancillary for a RGB or RGBA image). */
+ if (!(png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_USE))
+ {
+ if (png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_NOWARN)
+ {
+ png_chunk_benign_error(png_ptr, "CRC error");
+ }
+ else
+ {
+ png_chunk_warning(png_ptr, "CRC error");
+ return;
+ }
+ }
+ /* Otherwise, we (optionally) emit a warning and use the chunk. */
+ else if (!(png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_NOWARN))
+ {
+ png_chunk_warning(png_ptr, "CRC error");
+ }
+ }
+#endif
+
+ png_set_PLTE(png_ptr, info_ptr, palette, num);
+
+#ifdef PNG_READ_tRNS_SUPPORTED
+ if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
+ {
+ if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_tRNS))
+ {
+ if (png_ptr->num_trans > (png_uint_16)num)
+ {
+ png_warning(png_ptr, "Truncating incorrect tRNS chunk length");
+ png_ptr->num_trans = (png_uint_16)num;
+ }
+ if (info_ptr->num_trans > (png_uint_16)num)
+ {
+ png_warning(png_ptr, "Truncating incorrect info tRNS chunk length");
+ info_ptr->num_trans = (png_uint_16)num;
+ }
+ }
+ }
+#endif
+
+}
+
+void /* PRIVATE */
+png_handle_IEND(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
+{
+ png_debug(1, "in png_handle_IEND");
+
+ if (!(png_ptr->mode & PNG_HAVE_IHDR) || !(png_ptr->mode & PNG_HAVE_IDAT))
+ {
+ png_error(png_ptr, "No image in file");
+ }
+
+ png_ptr->mode |= (PNG_AFTER_IDAT | PNG_HAVE_IEND);
+
+ if (length != 0)
+ {
+ png_warning(png_ptr, "Incorrect IEND chunk length");
+ }
+ png_crc_finish(png_ptr, length);
+
+ info_ptr = info_ptr; /* Quiet compiler warnings about unused info_ptr */
+}
+
+#ifdef PNG_READ_gAMA_SUPPORTED
+void /* PRIVATE */
+png_handle_gAMA(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
+{
+ png_fixed_point igamma;
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+ float file_gamma;
+#endif
+ png_byte buf[4];
+
+ png_debug(1, "in png_handle_gAMA");
+
+ if (!(png_ptr->mode & PNG_HAVE_IHDR))
+ png_error(png_ptr, "Missing IHDR before gAMA");
+ else if (png_ptr->mode & PNG_HAVE_IDAT)
+ {
+ png_warning(png_ptr, "Invalid gAMA after IDAT");
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+ else if (png_ptr->mode & PNG_HAVE_PLTE)
+ /* Should be an error, but we can cope with it */
+ png_warning(png_ptr, "Out of place gAMA chunk");
+
+ if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_gAMA)
+#ifdef PNG_READ_sRGB_SUPPORTED
+ && !(info_ptr->valid & PNG_INFO_sRGB)
+#endif
+ )
+ {
+ png_warning(png_ptr, "Duplicate gAMA chunk");
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+
+ if (length != 4)
+ {
+ png_warning(png_ptr, "Incorrect gAMA chunk length");
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+
+ png_crc_read(png_ptr, buf, 4);
+ if (png_crc_finish(png_ptr, 0))
+ return;
+
+ igamma = (png_fixed_point)png_get_uint_32(buf);
+ /* Check for zero gamma */
+ if (igamma == 0)
+ {
+ png_warning(png_ptr,
+ "Ignoring gAMA chunk with gamma=0");
+ return;
+ }
+
+#ifdef PNG_READ_sRGB_SUPPORTED
+ if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_sRGB))
+ if (PNG_OUT_OF_RANGE(igamma, 45500L, 500))
+ {
+ png_warning(png_ptr,
+ "Ignoring incorrect gAMA value when sRGB is also present");
+#ifdef PNG_CONSOLE_IO_SUPPORTED
+ fprintf(stderr, "gamma = (%d/100000)", (int)igamma);
+#endif
+ return;
+ }
+#endif /* PNG_READ_sRGB_SUPPORTED */
+
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+ file_gamma = (float)igamma / (float)100000.0;
+# ifdef PNG_READ_GAMMA_SUPPORTED
+ png_ptr->gamma = file_gamma;
+# endif
+ png_set_gAMA(png_ptr, info_ptr, file_gamma);
+#endif
+#ifdef PNG_FIXED_POINT_SUPPORTED
+ png_set_gAMA_fixed(png_ptr, info_ptr, igamma);
+#endif
+}
+#endif
+
+#ifdef PNG_READ_sBIT_SUPPORTED
+void /* PRIVATE */
+png_handle_sBIT(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
+{
+ png_size_t truelen;
+ png_byte buf[4];
+
+ png_debug(1, "in png_handle_sBIT");
+
+ buf[0] = buf[1] = buf[2] = buf[3] = 0;
+
+ if (!(png_ptr->mode & PNG_HAVE_IHDR))
+ png_error(png_ptr, "Missing IHDR before sBIT");
+ else if (png_ptr->mode & PNG_HAVE_IDAT)
+ {
+ png_warning(png_ptr, "Invalid sBIT after IDAT");
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+ else if (png_ptr->mode & PNG_HAVE_PLTE)
+ {
+ /* Should be an error, but we can cope with it */
+ png_warning(png_ptr, "Out of place sBIT chunk");
+ }
+ if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_sBIT))
+ {
+ png_warning(png_ptr, "Duplicate sBIT chunk");
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+
+ if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
+ truelen = 3;
+ else
+ truelen = (png_size_t)png_ptr->channels;
+
+ if (length != truelen || length > 4)
+ {
+ png_warning(png_ptr, "Incorrect sBIT chunk length");
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+
+ png_crc_read(png_ptr, buf, truelen);
+ if (png_crc_finish(png_ptr, 0))
+ return;
+
+ if (png_ptr->color_type & PNG_COLOR_MASK_COLOR)
+ {
+ png_ptr->sig_bit.red = buf[0];
+ png_ptr->sig_bit.green = buf[1];
+ png_ptr->sig_bit.blue = buf[2];
+ png_ptr->sig_bit.alpha = buf[3];
+ }
+ else
+ {
+ png_ptr->sig_bit.gray = buf[0];
+ png_ptr->sig_bit.red = buf[0];
+ png_ptr->sig_bit.green = buf[0];
+ png_ptr->sig_bit.blue = buf[0];
+ png_ptr->sig_bit.alpha = buf[1];
+ }
+ png_set_sBIT(png_ptr, info_ptr, &(png_ptr->sig_bit));
+}
+#endif
+
+#ifdef PNG_READ_cHRM_SUPPORTED
+void /* PRIVATE */
+png_handle_cHRM(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
+{
+ png_byte buf[32];
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+ float white_x, white_y, red_x, red_y, green_x, green_y, blue_x, blue_y;
+#endif
+ png_fixed_point int_x_white, int_y_white, int_x_red, int_y_red, int_x_green,
+ int_y_green, int_x_blue, int_y_blue;
+
+ png_uint_32 uint_x, uint_y;
+
+ png_debug(1, "in png_handle_cHRM");
+
+ if (!(png_ptr->mode & PNG_HAVE_IHDR))
+ png_error(png_ptr, "Missing IHDR before cHRM");
+ else if (png_ptr->mode & PNG_HAVE_IDAT)
+ {
+ png_warning(png_ptr, "Invalid cHRM after IDAT");
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+ else if (png_ptr->mode & PNG_HAVE_PLTE)
+ /* Should be an error, but we can cope with it */
+ png_warning(png_ptr, "Missing PLTE before cHRM");
+
+ if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_cHRM)
+#ifdef PNG_READ_sRGB_SUPPORTED
+ && !(info_ptr->valid & PNG_INFO_sRGB)
+#endif
+ )
+ {
+ png_warning(png_ptr, "Duplicate cHRM chunk");
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+
+ if (length != 32)
+ {
+ png_warning(png_ptr, "Incorrect cHRM chunk length");
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+
+ png_crc_read(png_ptr, buf, 32);
+ if (png_crc_finish(png_ptr, 0))
+ return;
+
+ uint_x = png_get_uint_32(buf);
+ uint_y = png_get_uint_32(buf + 4);
+ int_x_white = (png_fixed_point)uint_x;
+ int_y_white = (png_fixed_point)uint_y;
+
+ uint_x = png_get_uint_32(buf + 8);
+ uint_y = png_get_uint_32(buf + 12);
+ int_x_red = (png_fixed_point)uint_x;
+ int_y_red = (png_fixed_point)uint_y;
+
+ uint_x = png_get_uint_32(buf + 16);
+ uint_y = png_get_uint_32(buf + 20);
+ int_x_green = (png_fixed_point)uint_x;
+ int_y_green = (png_fixed_point)uint_y;
+
+ uint_x = png_get_uint_32(buf + 24);
+ uint_y = png_get_uint_32(buf + 28);
+ int_x_blue = (png_fixed_point)uint_x;
+ int_y_blue = (png_fixed_point)uint_y;
+
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+ white_x = (float)int_x_white / (float)100000.0;
+ white_y = (float)int_y_white / (float)100000.0;
+ red_x = (float)int_x_red / (float)100000.0;
+ red_y = (float)int_y_red / (float)100000.0;
+ green_x = (float)int_x_green / (float)100000.0;
+ green_y = (float)int_y_green / (float)100000.0;
+ blue_x = (float)int_x_blue / (float)100000.0;
+ blue_y = (float)int_y_blue / (float)100000.0;
+#endif
+
+#ifdef PNG_READ_sRGB_SUPPORTED
+ if ((info_ptr != NULL) && (info_ptr->valid & PNG_INFO_sRGB))
+ {
+ if (PNG_OUT_OF_RANGE(int_x_white, 31270, 1000) ||
+ PNG_OUT_OF_RANGE(int_y_white, 32900, 1000) ||
+ PNG_OUT_OF_RANGE(int_x_red, 64000L, 1000) ||
+ PNG_OUT_OF_RANGE(int_y_red, 33000, 1000) ||
+ PNG_OUT_OF_RANGE(int_x_green, 30000, 1000) ||
+ PNG_OUT_OF_RANGE(int_y_green, 60000L, 1000) ||
+ PNG_OUT_OF_RANGE(int_x_blue, 15000, 1000) ||
+ PNG_OUT_OF_RANGE(int_y_blue, 6000, 1000))
+ {
+ png_warning(png_ptr,
+ "Ignoring incorrect cHRM value when sRGB is also present");
+#ifdef PNG_CONSOLE_IO_SUPPORTED
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+ fprintf(stderr, "wx=%f, wy=%f, rx=%f, ry=%f\n",
+ white_x, white_y, red_x, red_y);
+ fprintf(stderr, "gx=%f, gy=%f, bx=%f, by=%f\n",
+ green_x, green_y, blue_x, blue_y);
+#else
+ fprintf(stderr, "wx=%ld, wy=%ld, rx=%ld, ry=%ld\n",
+ int_x_white, int_y_white, int_x_red, int_y_red);
+ fprintf(stderr, "gx=%ld, gy=%ld, bx=%ld, by=%ld\n",
+ int_x_green, int_y_green, int_x_blue, int_y_blue);
+#endif
+#endif /* PNG_CONSOLE_IO_SUPPORTED */
+ }
+ return;
+ }
+#endif /* PNG_READ_sRGB_SUPPORTED */
+
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+ png_set_cHRM(png_ptr, info_ptr,
+ white_x, white_y, red_x, red_y, green_x, green_y, blue_x, blue_y);
+#endif
+#ifdef PNG_FIXED_POINT_SUPPORTED
+ png_set_cHRM_fixed(png_ptr, info_ptr,
+ int_x_white, int_y_white, int_x_red, int_y_red, int_x_green,
+ int_y_green, int_x_blue, int_y_blue);
+#endif
+}
+#endif
+
+#ifdef PNG_READ_sRGB_SUPPORTED
+void /* PRIVATE */
+png_handle_sRGB(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
+{
+ int intent;
+ png_byte buf[1];
+
+ png_debug(1, "in png_handle_sRGB");
+
+ if (!(png_ptr->mode & PNG_HAVE_IHDR))
+ png_error(png_ptr, "Missing IHDR before sRGB");
+ else if (png_ptr->mode & PNG_HAVE_IDAT)
+ {
+ png_warning(png_ptr, "Invalid sRGB after IDAT");
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+ else if (png_ptr->mode & PNG_HAVE_PLTE)
+ /* Should be an error, but we can cope with it */
+ png_warning(png_ptr, "Out of place sRGB chunk");
+
+ if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_sRGB))
+ {
+ png_warning(png_ptr, "Duplicate sRGB chunk");
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+
+ if (length != 1)
+ {
+ png_warning(png_ptr, "Incorrect sRGB chunk length");
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+
+ png_crc_read(png_ptr, buf, 1);
+ if (png_crc_finish(png_ptr, 0))
+ return;
+
+ intent = buf[0];
+ /* Check for bad intent */
+ if (intent >= PNG_sRGB_INTENT_LAST)
+ {
+ png_warning(png_ptr, "Unknown sRGB intent");
+ return;
+ }
+
+#if defined(PNG_READ_gAMA_SUPPORTED) && defined(PNG_READ_GAMMA_SUPPORTED)
+ if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_gAMA))
+ {
+ png_fixed_point igamma;
+#ifdef PNG_FIXED_POINT_SUPPORTED
+ igamma=info_ptr->int_gamma;
+#else
+# ifdef PNG_FLOATING_POINT_SUPPORTED
+ igamma=(png_fixed_point)(info_ptr->gamma * 100000.);
+# endif
+#endif
+ if (PNG_OUT_OF_RANGE(igamma, 45500L, 500))
+ {
+ png_warning(png_ptr,
+ "Ignoring incorrect gAMA value when sRGB is also present");
+#ifdef PNG_CONSOLE_IO_SUPPORTED
+# ifdef PNG_FIXED_POINT_SUPPORTED
+ fprintf(stderr, "incorrect gamma=(%d/100000)\n",
+ (int)png_ptr->int_gamma);
+# else
+# ifdef PNG_FLOATING_POINT_SUPPORTED
+ fprintf(stderr, "incorrect gamma=%f\n", png_ptr->gamma);
+# endif
+# endif
+#endif
+ }
+ }
+#endif /* PNG_READ_gAMA_SUPPORTED */
+
+#ifdef PNG_READ_cHRM_SUPPORTED
+#ifdef PNG_FIXED_POINT_SUPPORTED
+ if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_cHRM))
+ if (PNG_OUT_OF_RANGE(info_ptr->int_x_white, 31270, 1000) ||
+ PNG_OUT_OF_RANGE(info_ptr->int_y_white, 32900, 1000) ||
+ PNG_OUT_OF_RANGE(info_ptr->int_x_red, 64000L, 1000) ||
+ PNG_OUT_OF_RANGE(info_ptr->int_y_red, 33000, 1000) ||
+ PNG_OUT_OF_RANGE(info_ptr->int_x_green, 30000, 1000) ||
+ PNG_OUT_OF_RANGE(info_ptr->int_y_green, 60000L, 1000) ||
+ PNG_OUT_OF_RANGE(info_ptr->int_x_blue, 15000, 1000) ||
+ PNG_OUT_OF_RANGE(info_ptr->int_y_blue, 6000, 1000))
+ {
+ png_warning(png_ptr,
+ "Ignoring incorrect cHRM value when sRGB is also present");
+ }
+#endif /* PNG_FIXED_POINT_SUPPORTED */
+#endif /* PNG_READ_cHRM_SUPPORTED */
+
+ png_set_sRGB_gAMA_and_cHRM(png_ptr, info_ptr, intent);
+}
+#endif /* PNG_READ_sRGB_SUPPORTED */
+
+#ifdef PNG_READ_iCCP_SUPPORTED
+void /* PRIVATE */
+png_handle_iCCP(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
+/* Note: this does not properly handle chunks that are > 64K under DOS */
+{
+ png_byte compression_type;
+ png_bytep pC;
+ png_charp profile;
+ png_uint_32 skip = 0;
+ png_uint_32 profile_size, profile_length;
+ png_size_t slength, prefix_length, data_length;
+
+ png_debug(1, "in png_handle_iCCP");
+
+ if (!(png_ptr->mode & PNG_HAVE_IHDR))
+ png_error(png_ptr, "Missing IHDR before iCCP");
+ else if (png_ptr->mode & PNG_HAVE_IDAT)
+ {
+ png_warning(png_ptr, "Invalid iCCP after IDAT");
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+ else if (png_ptr->mode & PNG_HAVE_PLTE)
+ /* Should be an error, but we can cope with it */
+ png_warning(png_ptr, "Out of place iCCP chunk");
+
+ if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_iCCP))
+ {
+ png_warning(png_ptr, "Duplicate iCCP chunk");
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+
+#ifdef PNG_MAX_MALLOC_64K
+ if (length > (png_uint_32)65535L)
+ {
+ png_warning(png_ptr, "iCCP chunk too large to fit in memory");
+ skip = length - (png_uint_32)65535L;
+ length = (png_uint_32)65535L;
+ }
+#endif
+
+ png_free(png_ptr, png_ptr->chunkdata);
+ png_ptr->chunkdata = (png_charp)png_malloc(png_ptr, length + 1);
+ slength = (png_size_t)length;
+ png_crc_read(png_ptr, (png_bytep)png_ptr->chunkdata, slength);
+
+ if (png_crc_finish(png_ptr, skip))
+ {
+ png_free(png_ptr, png_ptr->chunkdata);
+ png_ptr->chunkdata = NULL;
+ return;
+ }
+
+ png_ptr->chunkdata[slength] = 0x00;
+
+ for (profile = png_ptr->chunkdata; *profile; profile++)
+ /* Empty loop to find end of name */ ;
+
+ ++profile;
+
+ /* There should be at least one zero (the compression type byte)
+ * following the separator, and we should be on it
+ */
+ if ( profile >= png_ptr->chunkdata + slength - 1)
+ {
+ png_free(png_ptr, png_ptr->chunkdata);
+ png_ptr->chunkdata = NULL;
+ png_warning(png_ptr, "Malformed iCCP chunk");
+ return;
+ }
+
+ /* Compression_type should always be zero */
+ compression_type = *profile++;
+ if (compression_type)
+ {
+ png_warning(png_ptr, "Ignoring nonzero compression type in iCCP chunk");
+ compression_type = 0x00; /* Reset it to zero (libpng-1.0.6 through 1.0.8
+ wrote nonzero) */
+ }
+
+ prefix_length = profile - png_ptr->chunkdata;
+ png_decompress_chunk(png_ptr, compression_type,
+ slength, prefix_length, &data_length);
+
+ profile_length = data_length - prefix_length;
+
+ if ( prefix_length > data_length || profile_length < 4)
+ {
+ png_free(png_ptr, png_ptr->chunkdata);
+ png_ptr->chunkdata = NULL;
+ png_warning(png_ptr, "Profile size field missing from iCCP chunk");
+ return;
+ }
+
+ /* Check the profile_size recorded in the first 32 bits of the ICC profile */
+ pC = (png_bytep)(png_ptr->chunkdata + prefix_length);
+ profile_size = ((*(pC ))<<24) |
+ ((*(pC + 1))<<16) |
+ ((*(pC + 2))<< 8) |
+ ((*(pC + 3)) );
+
+ if (profile_size < profile_length)
+ profile_length = profile_size;
+
+ if (profile_size > profile_length)
+ {
+ png_free(png_ptr, png_ptr->chunkdata);
+ png_ptr->chunkdata = NULL;
+ png_warning(png_ptr, "Ignoring truncated iCCP profile");
+ return;
+ }
+
+ png_set_iCCP(png_ptr, info_ptr, png_ptr->chunkdata,
+ compression_type, png_ptr->chunkdata + prefix_length, profile_length);
+ png_free(png_ptr, png_ptr->chunkdata);
+ png_ptr->chunkdata = NULL;
+}
+#endif /* PNG_READ_iCCP_SUPPORTED */
+
+#ifdef PNG_READ_sPLT_SUPPORTED
+void /* PRIVATE */
+png_handle_sPLT(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
+/* Note: this does not properly handle chunks that are > 64K under DOS */
+{
+ png_bytep entry_start;
+ png_sPLT_t new_palette;
+#ifdef PNG_POINTER_INDEXING_SUPPORTED
+ png_sPLT_entryp pp;
+#endif
+ int data_length, entry_size, i;
+ png_uint_32 skip = 0;
+ png_size_t slength;
+
+ png_debug(1, "in png_handle_sPLT");
+
+#ifdef PNG_SET_USER_LIMITS_SUPPORTED
+
+ if (png_ptr->user_chunk_cache_max != 0)
+ {
+ if (png_ptr->user_chunk_cache_max == 1)
+ {
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+ if (--png_ptr->user_chunk_cache_max == 1)
+ {
+ png_warning(png_ptr, "No space in chunk cache for sPLT");
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+ }
+#endif
+
+ if (!(png_ptr->mode & PNG_HAVE_IHDR))
+ png_error(png_ptr, "Missing IHDR before sPLT");
+ else if (png_ptr->mode & PNG_HAVE_IDAT)
+ {
+ png_warning(png_ptr, "Invalid sPLT after IDAT");
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+
+#ifdef PNG_MAX_MALLOC_64K
+ if (length > (png_uint_32)65535L)
+ {
+ png_warning(png_ptr, "sPLT chunk too large to fit in memory");
+ skip = length - (png_uint_32)65535L;
+ length = (png_uint_32)65535L;
+ }
+#endif
+
+ png_free(png_ptr, png_ptr->chunkdata);
+ png_ptr->chunkdata = (png_charp)png_malloc(png_ptr, length + 1);
+ slength = (png_size_t)length;
+ png_crc_read(png_ptr, (png_bytep)png_ptr->chunkdata, slength);
+
+ if (png_crc_finish(png_ptr, skip))
+ {
+ png_free(png_ptr, png_ptr->chunkdata);
+ png_ptr->chunkdata = NULL;
+ return;
+ }
+
+ png_ptr->chunkdata[slength] = 0x00;
+
+ for (entry_start = (png_bytep)png_ptr->chunkdata; *entry_start; entry_start++)
+ /* Empty loop to find end of name */ ;
+ ++entry_start;
+
+ /* A sample depth should follow the separator, and we should be on it */
+ if (entry_start > (png_bytep)png_ptr->chunkdata + slength - 2)
+ {
+ png_free(png_ptr, png_ptr->chunkdata);
+ png_ptr->chunkdata = NULL;
+ png_warning(png_ptr, "malformed sPLT chunk");
+ return;
+ }
+
+ new_palette.depth = *entry_start++;
+ entry_size = (new_palette.depth == 8 ? 6 : 10);
+ data_length = (slength - (entry_start - (png_bytep)png_ptr->chunkdata));
+
+ /* Integrity-check the data length */
+ if (data_length % entry_size)
+ {
+ png_free(png_ptr, png_ptr->chunkdata);
+ png_ptr->chunkdata = NULL;
+ png_warning(png_ptr, "sPLT chunk has bad length");
+ return;
+ }
+
+ new_palette.nentries = (png_int_32) ( data_length / entry_size);
+ if ((png_uint_32) new_palette.nentries >
+ (png_uint_32) (PNG_SIZE_MAX / png_sizeof(png_sPLT_entry)))
+ {
+ png_warning(png_ptr, "sPLT chunk too long");
+ return;
+ }
+ new_palette.entries = (png_sPLT_entryp)png_malloc_warn(
+ png_ptr, new_palette.nentries * png_sizeof(png_sPLT_entry));
+ if (new_palette.entries == NULL)
+ {
+ png_warning(png_ptr, "sPLT chunk requires too much memory");
+ return;
+ }
+
+#ifdef PNG_POINTER_INDEXING_SUPPORTED
+ for (i = 0; i < new_palette.nentries; i++)
+ {
+ pp = new_palette.entries + i;
+
+ if (new_palette.depth == 8)
+ {
+ pp->red = *entry_start++;
+ pp->green = *entry_start++;
+ pp->blue = *entry_start++;
+ pp->alpha = *entry_start++;
+ }
+ else
+ {
+ pp->red = png_get_uint_16(entry_start); entry_start += 2;
+ pp->green = png_get_uint_16(entry_start); entry_start += 2;
+ pp->blue = png_get_uint_16(entry_start); entry_start += 2;
+ pp->alpha = png_get_uint_16(entry_start); entry_start += 2;
+ }
+ pp->frequency = png_get_uint_16(entry_start); entry_start += 2;
+ }
+#else
+ pp = new_palette.entries;
+ for (i = 0; i < new_palette.nentries; i++)
+ {
+
+ if (new_palette.depth == 8)
+ {
+ pp[i].red = *entry_start++;
+ pp[i].green = *entry_start++;
+ pp[i].blue = *entry_start++;
+ pp[i].alpha = *entry_start++;
+ }
+ else
+ {
+ pp[i].red = png_get_uint_16(entry_start); entry_start += 2;
+ pp[i].green = png_get_uint_16(entry_start); entry_start += 2;
+ pp[i].blue = png_get_uint_16(entry_start); entry_start += 2;
+ pp[i].alpha = png_get_uint_16(entry_start); entry_start += 2;
+ }
+ pp->frequency = png_get_uint_16(entry_start); entry_start += 2;
+ }
+#endif
+
+ /* Discard all chunk data except the name and stash that */
+ new_palette.name = png_ptr->chunkdata;
+
+ png_set_sPLT(png_ptr, info_ptr, &new_palette, 1);
+
+ png_free(png_ptr, png_ptr->chunkdata);
+ png_ptr->chunkdata = NULL;
+ png_free(png_ptr, new_palette.entries);
+}
+#endif /* PNG_READ_sPLT_SUPPORTED */
+
+#ifdef PNG_READ_tRNS_SUPPORTED
+void /* PRIVATE */
+png_handle_tRNS(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
+{
+ png_byte readbuf[PNG_MAX_PALETTE_LENGTH];
+
+ png_debug(1, "in png_handle_tRNS");
+
+ if (!(png_ptr->mode & PNG_HAVE_IHDR))
+ png_error(png_ptr, "Missing IHDR before tRNS");
+ else if (png_ptr->mode & PNG_HAVE_IDAT)
+ {
+ png_warning(png_ptr, "Invalid tRNS after IDAT");
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+ else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_tRNS))
+ {
+ png_warning(png_ptr, "Duplicate tRNS chunk");
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+
+ if (png_ptr->color_type == PNG_COLOR_TYPE_GRAY)
+ {
+ png_byte buf[2];
+
+ if (length != 2)
+ {
+ png_warning(png_ptr, "Incorrect tRNS chunk length");
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+
+ png_crc_read(png_ptr, buf, 2);
+ png_ptr->num_trans = 1;
+ png_ptr->trans_color.gray = png_get_uint_16(buf);
+ }
+ else if (png_ptr->color_type == PNG_COLOR_TYPE_RGB)
+ {
+ png_byte buf[6];
+
+ if (length != 6)
+ {
+ png_warning(png_ptr, "Incorrect tRNS chunk length");
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+ png_crc_read(png_ptr, buf, (png_size_t)length);
+ png_ptr->num_trans = 1;
+ png_ptr->trans_color.red = png_get_uint_16(buf);
+ png_ptr->trans_color.green = png_get_uint_16(buf + 2);
+ png_ptr->trans_color.blue = png_get_uint_16(buf + 4);
+ }
+ else if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
+ {
+ if (!(png_ptr->mode & PNG_HAVE_PLTE))
+ {
+ /* Should be an error, but we can cope with it. */
+ png_warning(png_ptr, "Missing PLTE before tRNS");
+ }
+ if (length > (png_uint_32)png_ptr->num_palette ||
+ length > PNG_MAX_PALETTE_LENGTH)
+ {
+ png_warning(png_ptr, "Incorrect tRNS chunk length");
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+ if (length == 0)
+ {
+ png_warning(png_ptr, "Zero length tRNS chunk");
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+ png_crc_read(png_ptr, readbuf, (png_size_t)length);
+ png_ptr->num_trans = (png_uint_16)length;
+ }
+ else
+ {
+ png_warning(png_ptr, "tRNS chunk not allowed with alpha channel");
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+
+ if (png_crc_finish(png_ptr, 0))
+ {
+ png_ptr->num_trans = 0;
+ return;
+ }
+
+ png_set_tRNS(png_ptr, info_ptr, readbuf, png_ptr->num_trans,
+ &(png_ptr->trans_color));
+}
+#endif
+
+#ifdef PNG_READ_bKGD_SUPPORTED
+void /* PRIVATE */
+png_handle_bKGD(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
+{
+ png_size_t truelen;
+ png_byte buf[6];
+
+ png_debug(1, "in png_handle_bKGD");
+
+ if (!(png_ptr->mode & PNG_HAVE_IHDR))
+ png_error(png_ptr, "Missing IHDR before bKGD");
+ else if (png_ptr->mode & PNG_HAVE_IDAT)
+ {
+ png_warning(png_ptr, "Invalid bKGD after IDAT");
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+ else if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE &&
+ !(png_ptr->mode & PNG_HAVE_PLTE))
+ {
+ png_warning(png_ptr, "Missing PLTE before bKGD");
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+ else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_bKGD))
+ {
+ png_warning(png_ptr, "Duplicate bKGD chunk");
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+
+ if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
+ truelen = 1;
+ else if (png_ptr->color_type & PNG_COLOR_MASK_COLOR)
+ truelen = 6;
+ else
+ truelen = 2;
+
+ if (length != truelen)
+ {
+ png_warning(png_ptr, "Incorrect bKGD chunk length");
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+
+ png_crc_read(png_ptr, buf, truelen);
+ if (png_crc_finish(png_ptr, 0))
+ return;
+
+ /* We convert the index value into RGB components so that we can allow
+ * arbitrary RGB values for background when we have transparency, and
+ * so it is easy to determine the RGB values of the background color
+ * from the info_ptr struct. */
+ if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
+ {
+ png_ptr->background.index = buf[0];
+ if (info_ptr && info_ptr->num_palette)
+ {
+ if (buf[0] >= info_ptr->num_palette)
+ {
+ png_warning(png_ptr, "Incorrect bKGD chunk index value");
+ return;
+ }
+ png_ptr->background.red =
+ (png_uint_16)png_ptr->palette[buf[0]].red;
+ png_ptr->background.green =
+ (png_uint_16)png_ptr->palette[buf[0]].green;
+ png_ptr->background.blue =
+ (png_uint_16)png_ptr->palette[buf[0]].blue;
+ }
+ }
+ else if (!(png_ptr->color_type & PNG_COLOR_MASK_COLOR)) /* GRAY */
+ {
+ png_ptr->background.red =
+ png_ptr->background.green =
+ png_ptr->background.blue =
+ png_ptr->background.gray = png_get_uint_16(buf);
+ }
+ else
+ {
+ png_ptr->background.red = png_get_uint_16(buf);
+ png_ptr->background.green = png_get_uint_16(buf + 2);
+ png_ptr->background.blue = png_get_uint_16(buf + 4);
+ }
+
+ png_set_bKGD(png_ptr, info_ptr, &(png_ptr->background));
+}
+#endif
+
+#ifdef PNG_READ_hIST_SUPPORTED
+void /* PRIVATE */
+png_handle_hIST(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
+{
+ unsigned int num, i;
+ png_uint_16 readbuf[PNG_MAX_PALETTE_LENGTH];
+
+ png_debug(1, "in png_handle_hIST");
+
+ if (!(png_ptr->mode & PNG_HAVE_IHDR))
+ png_error(png_ptr, "Missing IHDR before hIST");
+ else if (png_ptr->mode & PNG_HAVE_IDAT)
+ {
+ png_warning(png_ptr, "Invalid hIST after IDAT");
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+ else if (!(png_ptr->mode & PNG_HAVE_PLTE))
+ {
+ png_warning(png_ptr, "Missing PLTE before hIST");
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+ else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_hIST))
+ {
+ png_warning(png_ptr, "Duplicate hIST chunk");
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+
+ num = length / 2 ;
+ if (num != (unsigned int) png_ptr->num_palette || num >
+ (unsigned int) PNG_MAX_PALETTE_LENGTH)
+ {
+ png_warning(png_ptr, "Incorrect hIST chunk length");
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+
+ for (i = 0; i < num; i++)
+ {
+ png_byte buf[2];
+
+ png_crc_read(png_ptr, buf, 2);
+ readbuf[i] = png_get_uint_16(buf);
+ }
+
+ if (png_crc_finish(png_ptr, 0))
+ return;
+
+ png_set_hIST(png_ptr, info_ptr, readbuf);
+}
+#endif
+
+#ifdef PNG_READ_pHYs_SUPPORTED
+void /* PRIVATE */
+png_handle_pHYs(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
+{
+ png_byte buf[9];
+ png_uint_32 res_x, res_y;
+ int unit_type;
+
+ png_debug(1, "in png_handle_pHYs");
+
+ if (!(png_ptr->mode & PNG_HAVE_IHDR))
+ png_error(png_ptr, "Missing IHDR before pHYs");
+ else if (png_ptr->mode & PNG_HAVE_IDAT)
+ {
+ png_warning(png_ptr, "Invalid pHYs after IDAT");
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+ else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs))
+ {
+ png_warning(png_ptr, "Duplicate pHYs chunk");
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+
+ if (length != 9)
+ {
+ png_warning(png_ptr, "Incorrect pHYs chunk length");
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+
+ png_crc_read(png_ptr, buf, 9);
+ if (png_crc_finish(png_ptr, 0))
+ return;
+
+ res_x = png_get_uint_32(buf);
+ res_y = png_get_uint_32(buf + 4);
+ unit_type = buf[8];
+ png_set_pHYs(png_ptr, info_ptr, res_x, res_y, unit_type);
+}
+#endif
+
+#ifdef PNG_READ_oFFs_SUPPORTED
+void /* PRIVATE */
+png_handle_oFFs(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
+{
+ png_byte buf[9];
+ png_int_32 offset_x, offset_y;
+ int unit_type;
+
+ png_debug(1, "in png_handle_oFFs");
+
+ if (!(png_ptr->mode & PNG_HAVE_IHDR))
+ png_error(png_ptr, "Missing IHDR before oFFs");
+ else if (png_ptr->mode & PNG_HAVE_IDAT)
+ {
+ png_warning(png_ptr, "Invalid oFFs after IDAT");
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+ else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_oFFs))
+ {
+ png_warning(png_ptr, "Duplicate oFFs chunk");
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+
+ if (length != 9)
+ {
+ png_warning(png_ptr, "Incorrect oFFs chunk length");
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+
+ png_crc_read(png_ptr, buf, 9);
+ if (png_crc_finish(png_ptr, 0))
+ return;
+
+ offset_x = png_get_int_32(buf);
+ offset_y = png_get_int_32(buf + 4);
+ unit_type = buf[8];
+ png_set_oFFs(png_ptr, info_ptr, offset_x, offset_y, unit_type);
+}
+#endif
+
+#ifdef PNG_READ_pCAL_SUPPORTED
+/* Read the pCAL chunk (described in the PNG Extensions document) */
+void /* PRIVATE */
+png_handle_pCAL(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
+{
+ png_int_32 X0, X1;
+ png_byte type, nparams;
+ png_charp buf, units, endptr;
+ png_charpp params;
+ png_size_t slength;
+ int i;
+
+ png_debug(1, "in png_handle_pCAL");
+
+ if (!(png_ptr->mode & PNG_HAVE_IHDR))
+ png_error(png_ptr, "Missing IHDR before pCAL");
+ else if (png_ptr->mode & PNG_HAVE_IDAT)
+ {
+ png_warning(png_ptr, "Invalid pCAL after IDAT");
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+ else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_pCAL))
+ {
+ png_warning(png_ptr, "Duplicate pCAL chunk");
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+
+ png_debug1(2, "Allocating and reading pCAL chunk data (%lu bytes)",
+ length + 1);
+ png_free(png_ptr, png_ptr->chunkdata);
+ png_ptr->chunkdata = (png_charp)png_malloc_warn(png_ptr, length + 1);
+ if (png_ptr->chunkdata == NULL)
+ {
+ png_warning(png_ptr, "No memory for pCAL purpose");
+ return;
+ }
+ slength = (png_size_t)length;
+ png_crc_read(png_ptr, (png_bytep)png_ptr->chunkdata, slength);
+
+ if (png_crc_finish(png_ptr, 0))
+ {
+ png_free(png_ptr, png_ptr->chunkdata);
+ png_ptr->chunkdata = NULL;
+ return;
+ }
+
+ png_ptr->chunkdata[slength] = 0x00; /* Null terminate the last string */
+
+ png_debug(3, "Finding end of pCAL purpose string");
+ for (buf = png_ptr->chunkdata; *buf; buf++)
+ /* Empty loop */ ;
+
+ endptr = png_ptr->chunkdata + slength;
+
+ /* We need to have at least 12 bytes after the purpose string
+ in order to get the parameter information. */
+ if (endptr <= buf + 12)
+ {
+ png_warning(png_ptr, "Invalid pCAL data");
+ png_free(png_ptr, png_ptr->chunkdata);
+ png_ptr->chunkdata = NULL;
+ return;
+ }
+
+ png_debug(3, "Reading pCAL X0, X1, type, nparams, and units");
+ X0 = png_get_int_32((png_bytep)buf+1);
+ X1 = png_get_int_32((png_bytep)buf+5);
+ type = buf[9];
+ nparams = buf[10];
+ units = buf + 11;
+
+ png_debug(3, "Checking pCAL equation type and number of parameters");
+ /* Check that we have the right number of parameters for known
+ equation types. */
+ if ((type == PNG_EQUATION_LINEAR && nparams != 2) ||
+ (type == PNG_EQUATION_BASE_E && nparams != 3) ||
+ (type == PNG_EQUATION_ARBITRARY && nparams != 3) ||
+ (type == PNG_EQUATION_HYPERBOLIC && nparams != 4))
+ {
+ png_warning(png_ptr, "Invalid pCAL parameters for equation type");
+ png_free(png_ptr, png_ptr->chunkdata);
+ png_ptr->chunkdata = NULL;
+ return;
+ }
+ else if (type >= PNG_EQUATION_LAST)
+ {
+ png_warning(png_ptr, "Unrecognized equation type for pCAL chunk");
+ }
+
+ for (buf = units; *buf; buf++)
+ /* Empty loop to move past the units string. */ ;
+
+ png_debug(3, "Allocating pCAL parameters array");
+ params = (png_charpp)png_malloc_warn(png_ptr,
+ (png_size_t)(nparams * png_sizeof(png_charp)));
+ if (params == NULL)
+ {
+ png_free(png_ptr, png_ptr->chunkdata);
+ png_ptr->chunkdata = NULL;
+ png_warning(png_ptr, "No memory for pCAL params");
+ return;
+ }
+
+ /* Get pointers to the start of each parameter string. */
+ for (i = 0; i < (int)nparams; i++)
+ {
+ buf++; /* Skip the null string terminator from previous parameter. */
+
+ png_debug1(3, "Reading pCAL parameter %d", i);
+ for (params[i] = buf; buf <= endptr && *buf != 0x00; buf++)
+ /* Empty loop to move past each parameter string */ ;
+
+ /* Make sure we haven't run out of data yet */
+ if (buf > endptr)
+ {
+ png_warning(png_ptr, "Invalid pCAL data");
+ png_free(png_ptr, png_ptr->chunkdata);
+ png_ptr->chunkdata = NULL;
+ png_free(png_ptr, params);
+ return;
+ }
+ }
+
+ png_set_pCAL(png_ptr, info_ptr, png_ptr->chunkdata, X0, X1, type, nparams,
+ units, params);
+
+ png_free(png_ptr, png_ptr->chunkdata);
+ png_ptr->chunkdata = NULL;
+ png_free(png_ptr, params);
+}
+#endif
+
+#ifdef PNG_READ_sCAL_SUPPORTED
+/* Read the sCAL chunk */
+void /* PRIVATE */
+png_handle_sCAL(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
+{
+ png_charp ep;
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+ double width, height;
+ png_charp vp;
+#else
+#ifdef PNG_FIXED_POINT_SUPPORTED
+ png_charp swidth, sheight;
+#endif
+#endif
+ png_size_t slength;
+
+ png_debug(1, "in png_handle_sCAL");
+
+ if (!(png_ptr->mode & PNG_HAVE_IHDR))
+ png_error(png_ptr, "Missing IHDR before sCAL");
+ else if (png_ptr->mode & PNG_HAVE_IDAT)
+ {
+ png_warning(png_ptr, "Invalid sCAL after IDAT");
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+ else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_sCAL))
+ {
+ png_warning(png_ptr, "Duplicate sCAL chunk");
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+
+ png_debug1(2, "Allocating and reading sCAL chunk data (%lu bytes)",
+ length + 1);
+ png_ptr->chunkdata = (png_charp)png_malloc_warn(png_ptr, length + 1);
+ if (png_ptr->chunkdata == NULL)
+ {
+ png_warning(png_ptr, "Out of memory while processing sCAL chunk");
+ return;
+ }
+ slength = (png_size_t)length;
+ png_crc_read(png_ptr, (png_bytep)png_ptr->chunkdata, slength);
+
+ if (png_crc_finish(png_ptr, 0))
+ {
+ png_free(png_ptr, png_ptr->chunkdata);
+ png_ptr->chunkdata = NULL;
+ return;
+ }
+
+ png_ptr->chunkdata[slength] = 0x00; /* Null terminate the last string */
+
+ ep = png_ptr->chunkdata + 1; /* Skip unit byte */
+
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+ width = png_strtod(png_ptr, ep, &vp);
+ if (*vp)
+ {
+ png_warning(png_ptr, "malformed width string in sCAL chunk");
+ return;
+ }
+#else
+#ifdef PNG_FIXED_POINT_SUPPORTED
+ swidth = (png_charp)png_malloc_warn(png_ptr, png_strlen(ep) + 1);
+ if (swidth == NULL)
+ {
+ png_warning(png_ptr, "Out of memory while processing sCAL chunk width");
+ return;
+ }
+ png_memcpy(swidth, ep, png_strlen(ep));
+#endif
+#endif
+
+ for (ep = png_ptr->chunkdata; *ep; ep++)
+ /* Empty loop */ ;
+ ep++;
+
+ if (png_ptr->chunkdata + slength < ep)
+ {
+ png_warning(png_ptr, "Truncated sCAL chunk");
+#if defined(PNG_FIXED_POINT_SUPPORTED) && \
+ !defined(PNG_FLOATING_POINT_SUPPORTED)
+ png_free(png_ptr, swidth);
+#endif
+ png_free(png_ptr, png_ptr->chunkdata);
+ png_ptr->chunkdata = NULL;
+ return;
+ }
+
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+ height = png_strtod(png_ptr, ep, &vp);
+ if (*vp)
+ {
+ png_warning(png_ptr, "malformed height string in sCAL chunk");
+ return;
+ }
+#else
+#ifdef PNG_FIXED_POINT_SUPPORTED
+ sheight = (png_charp)png_malloc_warn(png_ptr, png_strlen(ep) + 1);
+ if (sheight == NULL)
+ {
+ png_warning(png_ptr, "Out of memory while processing sCAL chunk height");
+ return;
+ }
+ png_memcpy(sheight, ep, png_strlen(ep));
+#endif
+#endif
+
+ if (png_ptr->chunkdata + slength < ep
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+ || width <= 0. || height <= 0.
+#endif
+ )
+ {
+ png_warning(png_ptr, "Invalid sCAL data");
+ png_free(png_ptr, png_ptr->chunkdata);
+ png_ptr->chunkdata = NULL;
+#if defined(PNG_FIXED_POINT_SUPPORTED) && !defined(PNG_FLOATING_POINT_SUPPORTED)
+ png_free(png_ptr, swidth);
+ png_free(png_ptr, sheight);
+#endif
+ return;
+ }
+
+
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+ png_set_sCAL(png_ptr, info_ptr, png_ptr->chunkdata[0], width, height);
+#else
+#ifdef PNG_FIXED_POINT_SUPPORTED
+ png_set_sCAL_s(png_ptr, info_ptr, png_ptr->chunkdata[0], swidth, sheight);
+#endif
+#endif
+
+ png_free(png_ptr, png_ptr->chunkdata);
+ png_ptr->chunkdata = NULL;
+#if defined(PNG_FIXED_POINT_SUPPORTED) && !defined(PNG_FLOATING_POINT_SUPPORTED)
+ png_free(png_ptr, swidth);
+ png_free(png_ptr, sheight);
+#endif
+}
+#endif
+
+#ifdef PNG_READ_tIME_SUPPORTED
+void /* PRIVATE */
+png_handle_tIME(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
+{
+ png_byte buf[7];
+ png_time mod_time;
+
+ png_debug(1, "in png_handle_tIME");
+
+ if (!(png_ptr->mode & PNG_HAVE_IHDR))
+ png_error(png_ptr, "Out of place tIME chunk");
+ else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_tIME))
+ {
+ png_warning(png_ptr, "Duplicate tIME chunk");
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+
+ if (png_ptr->mode & PNG_HAVE_IDAT)
+ png_ptr->mode |= PNG_AFTER_IDAT;
+
+ if (length != 7)
+ {
+ png_warning(png_ptr, "Incorrect tIME chunk length");
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+
+ png_crc_read(png_ptr, buf, 7);
+ if (png_crc_finish(png_ptr, 0))
+ return;
+
+ mod_time.second = buf[6];
+ mod_time.minute = buf[5];
+ mod_time.hour = buf[4];
+ mod_time.day = buf[3];
+ mod_time.month = buf[2];
+ mod_time.year = png_get_uint_16(buf);
+
+ png_set_tIME(png_ptr, info_ptr, &mod_time);
+}
+#endif
+
+#ifdef PNG_READ_tEXt_SUPPORTED
+/* Note: this does not properly handle chunks that are > 64K under DOS */
+void /* PRIVATE */
+png_handle_tEXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
+{
+ png_textp text_ptr;
+ png_charp key;
+ png_charp text;
+ png_uint_32 skip = 0;
+ png_size_t slength;
+ int ret;
+
+ png_debug(1, "in png_handle_tEXt");
+
+#ifdef PNG_SET_USER_LIMITS_SUPPORTED
+ if (png_ptr->user_chunk_cache_max != 0)
+ {
+ if (png_ptr->user_chunk_cache_max == 1)
+ {
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+ if (--png_ptr->user_chunk_cache_max == 1)
+ {
+ png_warning(png_ptr, "No space in chunk cache for tEXt");
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+ }
+#endif
+
+ if (!(png_ptr->mode & PNG_HAVE_IHDR))
+ png_error(png_ptr, "Missing IHDR before tEXt");
+
+ if (png_ptr->mode & PNG_HAVE_IDAT)
+ png_ptr->mode |= PNG_AFTER_IDAT;
+
+#ifdef PNG_MAX_MALLOC_64K
+ if (length > (png_uint_32)65535L)
+ {
+ png_warning(png_ptr, "tEXt chunk too large to fit in memory");
+ skip = length - (png_uint_32)65535L;
+ length = (png_uint_32)65535L;
+ }
+#endif
+
+ png_free(png_ptr, png_ptr->chunkdata);
+
+ png_ptr->chunkdata = (png_charp)png_malloc_warn(png_ptr, length + 1);
+ if (png_ptr->chunkdata == NULL)
+ {
+ png_warning(png_ptr, "No memory to process text chunk");
+ return;
+ }
+ slength = (png_size_t)length;
+ png_crc_read(png_ptr, (png_bytep)png_ptr->chunkdata, slength);
+
+ if (png_crc_finish(png_ptr, skip))
+ {
+ png_free(png_ptr, png_ptr->chunkdata);
+ png_ptr->chunkdata = NULL;
+ return;
+ }
+
+ key = png_ptr->chunkdata;
+
+ key[slength] = 0x00;
+
+ for (text = key; *text; text++)
+ /* Empty loop to find end of key */ ;
+
+ if (text != key + slength)
+ text++;
+
+ text_ptr = (png_textp)png_malloc_warn(png_ptr,
+ png_sizeof(png_text));
+ if (text_ptr == NULL)
+ {
+ png_warning(png_ptr, "Not enough memory to process text chunk");
+ png_free(png_ptr, png_ptr->chunkdata);
+ png_ptr->chunkdata = NULL;
+ return;
+ }
+ text_ptr->compression = PNG_TEXT_COMPRESSION_NONE;
+ text_ptr->key = key;
+#ifdef PNG_iTXt_SUPPORTED
+ text_ptr->lang = NULL;
+ text_ptr->lang_key = NULL;
+ text_ptr->itxt_length = 0;
+#endif
+ text_ptr->text = text;
+ text_ptr->text_length = png_strlen(text);
+
+ ret = png_set_text_2(png_ptr, info_ptr, text_ptr, 1);
+
+ png_free(png_ptr, png_ptr->chunkdata);
+ png_ptr->chunkdata = NULL;
+ png_free(png_ptr, text_ptr);
+ if (ret)
+ png_warning(png_ptr, "Insufficient memory to process text chunk");
+}
+#endif
+
+#ifdef PNG_READ_zTXt_SUPPORTED
+/* Note: this does not correctly handle chunks that are > 64K under DOS */
+void /* PRIVATE */
+png_handle_zTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
+{
+ png_textp text_ptr;
+ png_charp text;
+ int comp_type;
+ int ret;
+ png_size_t slength, prefix_len, data_len;
+
+ png_debug(1, "in png_handle_zTXt");
+
+#ifdef PNG_SET_USER_LIMITS_SUPPORTED
+ if (png_ptr->user_chunk_cache_max != 0)
+ {
+ if (png_ptr->user_chunk_cache_max == 1)
+ {
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+ if (--png_ptr->user_chunk_cache_max == 1)
+ {
+ png_warning(png_ptr, "No space in chunk cache for zTXt");
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+ }
+#endif
+
+ if (!(png_ptr->mode & PNG_HAVE_IHDR))
+ png_error(png_ptr, "Missing IHDR before zTXt");
+
+ if (png_ptr->mode & PNG_HAVE_IDAT)
+ png_ptr->mode |= PNG_AFTER_IDAT;
+
+#ifdef PNG_MAX_MALLOC_64K
+ /* We will no doubt have problems with chunks even half this size, but
+ there is no hard and fast rule to tell us where to stop. */
+ if (length > (png_uint_32)65535L)
+ {
+ png_warning(png_ptr, "zTXt chunk too large to fit in memory");
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+#endif
+
+ png_free(png_ptr, png_ptr->chunkdata);
+ png_ptr->chunkdata = (png_charp)png_malloc_warn(png_ptr, length + 1);
+ if (png_ptr->chunkdata == NULL)
+ {
+ png_warning(png_ptr, "Out of memory processing zTXt chunk");
+ return;
+ }
+ slength = (png_size_t)length;
+ png_crc_read(png_ptr, (png_bytep)png_ptr->chunkdata, slength);
+ if (png_crc_finish(png_ptr, 0))
+ {
+ png_free(png_ptr, png_ptr->chunkdata);
+ png_ptr->chunkdata = NULL;
+ return;
+ }
+
+ png_ptr->chunkdata[slength] = 0x00;
+
+ for (text = png_ptr->chunkdata; *text; text++)
+ /* Empty loop */ ;
+
+ /* zTXt must have some text after the chunkdataword */
+ if (text >= png_ptr->chunkdata + slength - 2)
+ {
+ png_warning(png_ptr, "Truncated zTXt chunk");
+ png_free(png_ptr, png_ptr->chunkdata);
+ png_ptr->chunkdata = NULL;
+ return;
+ }
+ else
+ {
+ comp_type = *(++text);
+ if (comp_type != PNG_TEXT_COMPRESSION_zTXt)
+ {
+ png_warning(png_ptr, "Unknown compression type in zTXt chunk");
+ comp_type = PNG_TEXT_COMPRESSION_zTXt;
+ }
+ text++; /* Skip the compression_method byte */
+ }
+ prefix_len = text - png_ptr->chunkdata;
+
+ png_decompress_chunk(png_ptr, comp_type,
+ (png_size_t)length, prefix_len, &data_len);
+
+ text_ptr = (png_textp)png_malloc_warn(png_ptr,
+ png_sizeof(png_text));
+ if (text_ptr == NULL)
+ {
+ png_warning(png_ptr, "Not enough memory to process zTXt chunk");
+ png_free(png_ptr, png_ptr->chunkdata);
+ png_ptr->chunkdata = NULL;
+ return;
+ }
+ text_ptr->compression = comp_type;
+ text_ptr->key = png_ptr->chunkdata;
+#ifdef PNG_iTXt_SUPPORTED
+ text_ptr->lang = NULL;
+ text_ptr->lang_key = NULL;
+ text_ptr->itxt_length = 0;
+#endif
+ text_ptr->text = png_ptr->chunkdata + prefix_len;
+ text_ptr->text_length = data_len;
+
+ ret = png_set_text_2(png_ptr, info_ptr, text_ptr, 1);
+
+ png_free(png_ptr, text_ptr);
+ png_free(png_ptr, png_ptr->chunkdata);
+ png_ptr->chunkdata = NULL;
+ if (ret)
+ png_error(png_ptr, "Insufficient memory to store zTXt chunk");
+}
+#endif
+
+#ifdef PNG_READ_iTXt_SUPPORTED
+/* Note: this does not correctly handle chunks that are > 64K under DOS */
+void /* PRIVATE */
+png_handle_iTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
+{
+ png_textp text_ptr;
+ png_charp key, lang, text, lang_key;
+ int comp_flag;
+ int comp_type = 0;
+ int ret;
+ png_size_t slength, prefix_len, data_len;
+
+ png_debug(1, "in png_handle_iTXt");
+
+#ifdef PNG_SET_USER_LIMITS_SUPPORTED
+ if (png_ptr->user_chunk_cache_max != 0)
+ {
+ if (png_ptr->user_chunk_cache_max == 1)
+ {
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+ if (--png_ptr->user_chunk_cache_max == 1)
+ {
+ png_warning(png_ptr, "No space in chunk cache for iTXt");
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+ }
+#endif
+
+ if (!(png_ptr->mode & PNG_HAVE_IHDR))
+ png_error(png_ptr, "Missing IHDR before iTXt");
+
+ if (png_ptr->mode & PNG_HAVE_IDAT)
+ png_ptr->mode |= PNG_AFTER_IDAT;
+
+#ifdef PNG_MAX_MALLOC_64K
+ /* We will no doubt have problems with chunks even half this size, but
+ there is no hard and fast rule to tell us where to stop. */
+ if (length > (png_uint_32)65535L)
+ {
+ png_warning(png_ptr, "iTXt chunk too large to fit in memory");
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+#endif
+
+ png_free(png_ptr, png_ptr->chunkdata);
+ png_ptr->chunkdata = (png_charp)png_malloc_warn(png_ptr, length + 1);
+ if (png_ptr->chunkdata == NULL)
+ {
+ png_warning(png_ptr, "No memory to process iTXt chunk");
+ return;
+ }
+ slength = (png_size_t)length;
+ png_crc_read(png_ptr, (png_bytep)png_ptr->chunkdata, slength);
+ if (png_crc_finish(png_ptr, 0))
+ {
+ png_free(png_ptr, png_ptr->chunkdata);
+ png_ptr->chunkdata = NULL;
+ return;
+ }
+
+ png_ptr->chunkdata[slength] = 0x00;
+
+ for (lang = png_ptr->chunkdata; *lang; lang++)
+ /* Empty loop */ ;
+ lang++; /* Skip NUL separator */
+
+ /* iTXt must have a language tag (possibly empty), two compression bytes,
+ * translated keyword (possibly empty), and possibly some text after the
+ * keyword
+ */
+
+ if (lang >= png_ptr->chunkdata + slength - 3)
+ {
+ png_warning(png_ptr, "Truncated iTXt chunk");
+ png_free(png_ptr, png_ptr->chunkdata);
+ png_ptr->chunkdata = NULL;
+ return;
+ }
+ else
+ {
+ comp_flag = *lang++;
+ comp_type = *lang++;
+ }
+
+ for (lang_key = lang; *lang_key; lang_key++)
+ /* Empty loop */ ;
+ lang_key++; /* Skip NUL separator */
+
+ if (lang_key >= png_ptr->chunkdata + slength)
+ {
+ png_warning(png_ptr, "Truncated iTXt chunk");
+ png_free(png_ptr, png_ptr->chunkdata);
+ png_ptr->chunkdata = NULL;
+ return;
+ }
+
+ for (text = lang_key; *text; text++)
+ /* Empty loop */ ;
+ text++; /* Skip NUL separator */
+ if (text >= png_ptr->chunkdata + slength)
+ {
+ png_warning(png_ptr, "Malformed iTXt chunk");
+ png_free(png_ptr, png_ptr->chunkdata);
+ png_ptr->chunkdata = NULL;
+ return;
+ }
+
+ prefix_len = text - png_ptr->chunkdata;
+
+ key=png_ptr->chunkdata;
+ if (comp_flag)
+ png_decompress_chunk(png_ptr, comp_type,
+ (size_t)length, prefix_len, &data_len);
+ else
+ data_len = png_strlen(png_ptr->chunkdata + prefix_len);
+ text_ptr = (png_textp)png_malloc_warn(png_ptr,
+ png_sizeof(png_text));
+ if (text_ptr == NULL)
+ {
+ png_warning(png_ptr, "Not enough memory to process iTXt chunk");
+ png_free(png_ptr, png_ptr->chunkdata);
+ png_ptr->chunkdata = NULL;
+ return;
+ }
+ text_ptr->compression = (int)comp_flag + 1;
+ text_ptr->lang_key = png_ptr->chunkdata + (lang_key - key);
+ text_ptr->lang = png_ptr->chunkdata + (lang - key);
+ text_ptr->itxt_length = data_len;
+ text_ptr->text_length = 0;
+ text_ptr->key = png_ptr->chunkdata;
+ text_ptr->text = png_ptr->chunkdata + prefix_len;
+
+ ret = png_set_text_2(png_ptr, info_ptr, text_ptr, 1);
+
+ png_free(png_ptr, text_ptr);
+ png_free(png_ptr, png_ptr->chunkdata);
+ png_ptr->chunkdata = NULL;
+ if (ret)
+ png_error(png_ptr, "Insufficient memory to store iTXt chunk");
+}
+#endif
+
+/* This function is called when we haven't found a handler for a
+ chunk. If there isn't a problem with the chunk itself (ie bad
+ chunk name, CRC, or a critical chunk), the chunk is silently ignored
+ -- unless the PNG_FLAG_UNKNOWN_CHUNKS_SUPPORTED flag is on in which
+ case it will be saved away to be written out later. */
+void /* PRIVATE */
+png_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
+{
+ png_uint_32 skip = 0;
+
+ png_debug(1, "in png_handle_unknown");
+
+#ifdef PNG_SET_USER_LIMITS_SUPPORTED
+ if (png_ptr->user_chunk_cache_max != 0)
+ {
+ if (png_ptr->user_chunk_cache_max == 1)
+ {
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+ if (--png_ptr->user_chunk_cache_max == 1)
+ {
+ png_warning(png_ptr, "No space in chunk cache for unknown chunk");
+ png_crc_finish(png_ptr, length);
+ return;
+ }
+ }
+#endif
+
+ if (png_ptr->mode & PNG_HAVE_IDAT)
+ {
+ PNG_IDAT;
+ if (png_memcmp(png_ptr->chunk_name, png_IDAT, 4)) /* Not an IDAT */
+ png_ptr->mode |= PNG_AFTER_IDAT;
+ }
+
+ if (!(png_ptr->chunk_name[0] & 0x20))
+ {
+#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
+ if (png_handle_as_unknown(png_ptr, png_ptr->chunk_name) !=
+ PNG_HANDLE_CHUNK_ALWAYS
+#ifdef PNG_READ_USER_CHUNKS_SUPPORTED
+ && png_ptr->read_user_chunk_fn == NULL
+#endif
+ )
+#endif
+ png_chunk_error(png_ptr, "unknown critical chunk");
+ }
+
+#ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
+ if ((png_ptr->flags & PNG_FLAG_KEEP_UNKNOWN_CHUNKS)
+#ifdef PNG_READ_USER_CHUNKS_SUPPORTED
+ || (png_ptr->read_user_chunk_fn != NULL)
+#endif
+ )
+ {
+#ifdef PNG_MAX_MALLOC_64K
+ if (length > (png_uint_32)65535L)
+ {
+ png_warning(png_ptr, "unknown chunk too large to fit in memory");
+ skip = length - (png_uint_32)65535L;
+ length = (png_uint_32)65535L;
+ }
+#endif
+ png_memcpy((png_charp)png_ptr->unknown_chunk.name,
+ (png_charp)png_ptr->chunk_name,
+ png_sizeof(png_ptr->unknown_chunk.name));
+ png_ptr->unknown_chunk.name[png_sizeof(png_ptr->unknown_chunk.name)-1] = '\0';
+ png_ptr->unknown_chunk.size = (png_size_t)length;
+ if (length == 0)
+ png_ptr->unknown_chunk.data = NULL;
+ else
+ {
+ png_ptr->unknown_chunk.data = (png_bytep)png_malloc(png_ptr, length);
+ png_crc_read(png_ptr, (png_bytep)png_ptr->unknown_chunk.data, length);
+ }
+#ifdef PNG_READ_USER_CHUNKS_SUPPORTED
+ if (png_ptr->read_user_chunk_fn != NULL)
+ {
+ /* Callback to user unknown chunk handler */
+ int ret;
+ ret = (*(png_ptr->read_user_chunk_fn))
+ (png_ptr, &png_ptr->unknown_chunk);
+ if (ret < 0)
+ png_chunk_error(png_ptr, "error in user chunk");
+ if (ret == 0)
+ {
+ if (!(png_ptr->chunk_name[0] & 0x20))
+#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
+ if (png_handle_as_unknown(png_ptr, png_ptr->chunk_name) !=
+ PNG_HANDLE_CHUNK_ALWAYS)
+#endif
+ png_chunk_error(png_ptr, "unknown critical chunk");
+ png_set_unknown_chunks(png_ptr, info_ptr,
+ &png_ptr->unknown_chunk, 1);
+ }
+ }
+ else
+#endif
+ png_set_unknown_chunks(png_ptr, info_ptr, &png_ptr->unknown_chunk, 1);
+ png_free(png_ptr, png_ptr->unknown_chunk.data);
+ png_ptr->unknown_chunk.data = NULL;
+ }
+ else
+#endif
+ skip = length;
+
+ png_crc_finish(png_ptr, skip);
+
+#ifndef PNG_READ_USER_CHUNKS_SUPPORTED
+ info_ptr = info_ptr; /* Quiet compiler warnings about unused info_ptr */
+#endif
+}
+
+/* This function is called to verify that a chunk name is valid.
+ This function can't have the "critical chunk check" incorporated
+ into it, since in the future we will need to be able to call user
+ functions to handle unknown critical chunks after we check that
+ the chunk name itself is valid. */
+
+#define isnonalpha(c) ((c) < 65 || (c) > 122 || ((c) > 90 && (c) < 97))
+
+void /* PRIVATE */
+png_check_chunk_name(png_structp png_ptr, png_bytep chunk_name)
+{
+ png_debug(1, "in png_check_chunk_name");
+ if (isnonalpha(chunk_name[0]) || isnonalpha(chunk_name[1]) ||
+ isnonalpha(chunk_name[2]) || isnonalpha(chunk_name[3]))
+ {
+ png_chunk_error(png_ptr, "invalid chunk type");
+ }
+}
+
+/* Combines the row recently read in with the existing pixels in the
+ row. This routine takes care of alpha and transparency if requested.
+ This routine also handles the two methods of progressive display
+ of interlaced images, depending on the mask value.
+ The mask value describes which pixels are to be combined with
+ the row. The pattern always repeats every 8 pixels, so just 8
+ bits are needed. A one indicates the pixel is to be combined,
+ a zero indicates the pixel is to be skipped. This is in addition
+ to any alpha or transparency value associated with the pixel. If
+ you want all pixels to be combined, pass 0xff (255) in mask. */
+
+void /* PRIVATE */
+png_combine_row(png_structp png_ptr, png_bytep row, int mask)
+{
+ png_debug(1, "in png_combine_row");
+ if (mask == 0xff)
+ {
+ png_memcpy(row, png_ptr->row_buf + 1,
+ PNG_ROWBYTES(png_ptr->row_info.pixel_depth, png_ptr->width));
+ }
+ else
+ {
+ switch (png_ptr->row_info.pixel_depth)
+ {
+ case 1:
+ {
+ png_bytep sp = png_ptr->row_buf + 1;
+ png_bytep dp = row;
+ int s_inc, s_start, s_end;
+ int m = 0x80;
+ int shift;
+ png_uint_32 i;
+ png_uint_32 row_width = png_ptr->width;
+
+#ifdef PNG_READ_PACKSWAP_SUPPORTED
+ if (png_ptr->transformations & PNG_PACKSWAP)
+ {
+ s_start = 0;
+ s_end = 7;
+ s_inc = 1;
+ }
+ else
+#endif
+ {
+ s_start = 7;
+ s_end = 0;
+ s_inc = -1;
+ }
+
+ shift = s_start;
+
+ for (i = 0; i < row_width; i++)
+ {
+ if (m & mask)
+ {
+ int value;
+
+ value = (*sp >> shift) & 0x01;
+ *dp &= (png_byte)((0x7f7f >> (7 - shift)) & 0xff);
+ *dp |= (png_byte)(value << shift);
+ }
+
+ if (shift == s_end)
+ {
+ shift = s_start;
+ sp++;
+ dp++;
+ }
+ else
+ shift += s_inc;
+
+ if (m == 1)
+ m = 0x80;
+ else
+ m >>= 1;
+ }
+ break;
+ }
+ case 2:
+ {
+ png_bytep sp = png_ptr->row_buf + 1;
+ png_bytep dp = row;
+ int s_start, s_end, s_inc;
+ int m = 0x80;
+ int shift;
+ png_uint_32 i;
+ png_uint_32 row_width = png_ptr->width;
+ int value;
+
+#ifdef PNG_READ_PACKSWAP_SUPPORTED
+ if (png_ptr->transformations & PNG_PACKSWAP)
+ {
+ s_start = 0;
+ s_end = 6;
+ s_inc = 2;
+ }
+ else
+#endif
+ {
+ s_start = 6;
+ s_end = 0;
+ s_inc = -2;
+ }
+
+ shift = s_start;
+
+ for (i = 0; i < row_width; i++)
+ {
+ if (m & mask)
+ {
+ value = (*sp >> shift) & 0x03;
+ *dp &= (png_byte)((0x3f3f >> (6 - shift)) & 0xff);
+ *dp |= (png_byte)(value << shift);
+ }
+
+ if (shift == s_end)
+ {
+ shift = s_start;
+ sp++;
+ dp++;
+ }
+ else
+ shift += s_inc;
+ if (m == 1)
+ m = 0x80;
+ else
+ m >>= 1;
+ }
+ break;
+ }
+ case 4:
+ {
+ png_bytep sp = png_ptr->row_buf + 1;
+ png_bytep dp = row;
+ int s_start, s_end, s_inc;
+ int m = 0x80;
+ int shift;
+ png_uint_32 i;
+ png_uint_32 row_width = png_ptr->width;
+ int value;
+
+#ifdef PNG_READ_PACKSWAP_SUPPORTED
+ if (png_ptr->transformations & PNG_PACKSWAP)
+ {
+ s_start = 0;
+ s_end = 4;
+ s_inc = 4;
+ }
+ else
+#endif
+ {
+ s_start = 4;
+ s_end = 0;
+ s_inc = -4;
+ }
+ shift = s_start;
+
+ for (i = 0; i < row_width; i++)
+ {
+ if (m & mask)
+ {
+ value = (*sp >> shift) & 0xf;
+ *dp &= (png_byte)((0xf0f >> (4 - shift)) & 0xff);
+ *dp |= (png_byte)(value << shift);
+ }
+
+ if (shift == s_end)
+ {
+ shift = s_start;
+ sp++;
+ dp++;
+ }
+ else
+ shift += s_inc;
+ if (m == 1)
+ m = 0x80;
+ else
+ m >>= 1;
+ }
+ break;
+ }
+ default:
+ {
+ png_bytep sp = png_ptr->row_buf + 1;
+ png_bytep dp = row;
+ png_size_t pixel_bytes = (png_ptr->row_info.pixel_depth >> 3);
+ png_uint_32 i;
+ png_uint_32 row_width = png_ptr->width;
+ png_byte m = 0x80;
+
+
+ for (i = 0; i < row_width; i++)
+ {
+ if (m & mask)
+ {
+ png_memcpy(dp, sp, pixel_bytes);
+ }
+
+ sp += pixel_bytes;
+ dp += pixel_bytes;
+
+ if (m == 1)
+ m = 0x80;
+ else
+ m >>= 1;
+ }
+ break;
+ }
+ }
+ }
+}
+
+#ifdef PNG_READ_INTERLACING_SUPPORTED
+/* OLD pre-1.0.9 interface:
+void png_do_read_interlace(png_row_infop row_info, png_bytep row, int pass,
+ png_uint_32 transformations)
+ */
+void /* PRIVATE */
+png_do_read_interlace(png_structp png_ptr)
+{
+ png_row_infop row_info = &(png_ptr->row_info);
+ png_bytep row = png_ptr->row_buf + 1;
+ int pass = png_ptr->pass;
+ png_uint_32 transformations = png_ptr->transformations;
+ /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
+ /* Offset to next interlace block */
+ PNG_CONST int png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
+
+ png_debug(1, "in png_do_read_interlace");
+ if (row != NULL && row_info != NULL)
+ {
+ png_uint_32 final_width;
+
+ final_width = row_info->width * png_pass_inc[pass];
+
+ switch (row_info->pixel_depth)
+ {
+ case 1:
+ {
+ png_bytep sp = row + (png_size_t)((row_info->width - 1) >> 3);
+ png_bytep dp = row + (png_size_t)((final_width - 1) >> 3);
+ int sshift, dshift;
+ int s_start, s_end, s_inc;
+ int jstop = png_pass_inc[pass];
+ png_byte v;
+ png_uint_32 i;
+ int j;
+
+#ifdef PNG_READ_PACKSWAP_SUPPORTED
+ if (transformations & PNG_PACKSWAP)
+ {
+ sshift = (int)((row_info->width + 7) & 0x07);
+ dshift = (int)((final_width + 7) & 0x07);
+ s_start = 7;
+ s_end = 0;
+ s_inc = -1;
+ }
+ else
+#endif
+ {
+ sshift = 7 - (int)((row_info->width + 7) & 0x07);
+ dshift = 7 - (int)((final_width + 7) & 0x07);
+ s_start = 0;
+ s_end = 7;
+ s_inc = 1;
+ }
+
+ for (i = 0; i < row_info->width; i++)
+ {
+ v = (png_byte)((*sp >> sshift) & 0x01);
+ for (j = 0; j < jstop; j++)
+ {
+ *dp &= (png_byte)((0x7f7f >> (7 - dshift)) & 0xff);
+ *dp |= (png_byte)(v << dshift);
+ if (dshift == s_end)
+ {
+ dshift = s_start;
+ dp--;
+ }
+ else
+ dshift += s_inc;
+ }
+ if (sshift == s_end)
+ {
+ sshift = s_start;
+ sp--;
+ }
+ else
+ sshift += s_inc;
+ }
+ break;
+ }
+ case 2:
+ {
+ png_bytep sp = row + (png_uint_32)((row_info->width - 1) >> 2);
+ png_bytep dp = row + (png_uint_32)((final_width - 1) >> 2);
+ int sshift, dshift;
+ int s_start, s_end, s_inc;
+ int jstop = png_pass_inc[pass];
+ png_uint_32 i;
+
+#ifdef PNG_READ_PACKSWAP_SUPPORTED
+ if (transformations & PNG_PACKSWAP)
+ {
+ sshift = (int)(((row_info->width + 3) & 0x03) << 1);
+ dshift = (int)(((final_width + 3) & 0x03) << 1);
+ s_start = 6;
+ s_end = 0;
+ s_inc = -2;
+ }
+ else
+#endif
+ {
+ sshift = (int)((3 - ((row_info->width + 3) & 0x03)) << 1);
+ dshift = (int)((3 - ((final_width + 3) & 0x03)) << 1);
+ s_start = 0;
+ s_end = 6;
+ s_inc = 2;
+ }
+
+ for (i = 0; i < row_info->width; i++)
+ {
+ png_byte v;
+ int j;
+
+ v = (png_byte)((*sp >> sshift) & 0x03);
+ for (j = 0; j < jstop; j++)
+ {
+ *dp &= (png_byte)((0x3f3f >> (6 - dshift)) & 0xff);
+ *dp |= (png_byte)(v << dshift);
+ if (dshift == s_end)
+ {
+ dshift = s_start;
+ dp--;
+ }
+ else
+ dshift += s_inc;
+ }
+ if (sshift == s_end)
+ {
+ sshift = s_start;
+ sp--;
+ }
+ else
+ sshift += s_inc;
+ }
+ break;
+ }
+ case 4:
+ {
+ png_bytep sp = row + (png_size_t)((row_info->width - 1) >> 1);
+ png_bytep dp = row + (png_size_t)((final_width - 1) >> 1);
+ int sshift, dshift;
+ int s_start, s_end, s_inc;
+ png_uint_32 i;
+ int jstop = png_pass_inc[pass];
+
+#ifdef PNG_READ_PACKSWAP_SUPPORTED
+ if (transformations & PNG_PACKSWAP)
+ {
+ sshift = (int)(((row_info->width + 1) & 0x01) << 2);
+ dshift = (int)(((final_width + 1) & 0x01) << 2);
+ s_start = 4;
+ s_end = 0;
+ s_inc = -4;
+ }
+ else
+#endif
+ {
+ sshift = (int)((1 - ((row_info->width + 1) & 0x01)) << 2);
+ dshift = (int)((1 - ((final_width + 1) & 0x01)) << 2);
+ s_start = 0;
+ s_end = 4;
+ s_inc = 4;
+ }
+
+ for (i = 0; i < row_info->width; i++)
+ {
+ png_byte v = (png_byte)((*sp >> sshift) & 0xf);
+ int j;
+
+ for (j = 0; j < jstop; j++)
+ {
+ *dp &= (png_byte)((0xf0f >> (4 - dshift)) & 0xff);
+ *dp |= (png_byte)(v << dshift);
+ if (dshift == s_end)
+ {
+ dshift = s_start;
+ dp--;
+ }
+ else
+ dshift += s_inc;
+ }
+ if (sshift == s_end)
+ {
+ sshift = s_start;
+ sp--;
+ }
+ else
+ sshift += s_inc;
+ }
+ break;
+ }
+ default:
+ {
+ png_size_t pixel_bytes = (row_info->pixel_depth >> 3);
+ png_bytep sp = row + (png_size_t)(row_info->width - 1) * pixel_bytes;
+ png_bytep dp = row + (png_size_t)(final_width - 1) * pixel_bytes;
+
+ int jstop = png_pass_inc[pass];
+ png_uint_32 i;
+
+ for (i = 0; i < row_info->width; i++)
+ {
+ png_byte v[8];
+ int j;
+
+ png_memcpy(v, sp, pixel_bytes);
+ for (j = 0; j < jstop; j++)
+ {
+ png_memcpy(dp, v, pixel_bytes);
+ dp -= pixel_bytes;
+ }
+ sp -= pixel_bytes;
+ }
+ break;
+ }
+ }
+ row_info->width = final_width;
+ row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, final_width);
+ }
+#ifndef PNG_READ_PACKSWAP_SUPPORTED
+ transformations = transformations; /* Silence compiler warning */
+#endif
+}
+#endif /* PNG_READ_INTERLACING_SUPPORTED */
+
+void /* PRIVATE */
+png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep row,
+ png_bytep prev_row, int filter)
+{
+ png_debug(1, "in png_read_filter_row");
+ png_debug2(2, "row = %lu, filter = %d", png_ptr->row_number, filter);
+ switch (filter)
+ {
+ case PNG_FILTER_VALUE_NONE:
+ break;
+ case PNG_FILTER_VALUE_SUB:
+ {
+ png_uint_32 i;
+ png_uint_32 istop = row_info->rowbytes;
+ png_uint_32 bpp = (row_info->pixel_depth + 7) >> 3;
+ png_bytep rp = row + bpp;
+ png_bytep lp = row;
+
+ for (i = bpp; i < istop; i++)
+ {
+ *rp = (png_byte)(((int)(*rp) + (int)(*lp++)) & 0xff);
+ rp++;
+ }
+ break;
+ }
+ case PNG_FILTER_VALUE_UP:
+ {
+ png_uint_32 i;
+ png_uint_32 istop = row_info->rowbytes;
+ png_bytep rp = row;
+ png_bytep pp = prev_row;
+
+ for (i = 0; i < istop; i++)
+ {
+ *rp = (png_byte)(((int)(*rp) + (int)(*pp++)) & 0xff);
+ rp++;
+ }
+ break;
+ }
+ case PNG_FILTER_VALUE_AVG:
+ {
+ png_uint_32 i;
+ png_bytep rp = row;
+ png_bytep pp = prev_row;
+ png_bytep lp = row;
+ png_uint_32 bpp = (row_info->pixel_depth + 7) >> 3;
+ png_uint_32 istop = row_info->rowbytes - bpp;
+
+ for (i = 0; i < bpp; i++)
+ {
+ *rp = (png_byte)(((int)(*rp) +
+ ((int)(*pp++) / 2 )) & 0xff);
+ rp++;
+ }
+
+ for (i = 0; i < istop; i++)
+ {
+ *rp = (png_byte)(((int)(*rp) +
+ (int)(*pp++ + *lp++) / 2 ) & 0xff);
+ rp++;
+ }
+ break;
+ }
+ case PNG_FILTER_VALUE_PAETH:
+ {
+ png_uint_32 i;
+ png_bytep rp = row;
+ png_bytep pp = prev_row;
+ png_bytep lp = row;
+ png_bytep cp = prev_row;
+ png_uint_32 bpp = (row_info->pixel_depth + 7) >> 3;
+ png_uint_32 istop=row_info->rowbytes - bpp;
+
+ for (i = 0; i < bpp; i++)
+ {
+ *rp = (png_byte)(((int)(*rp) + (int)(*pp++)) & 0xff);
+ rp++;
+ }
+
+ for (i = 0; i < istop; i++) /* Use leftover rp,pp */
+ {
+ int a, b, c, pa, pb, pc, p;
+
+ a = *lp++;
+ b = *pp++;
+ c = *cp++;
+
+ p = b - c;
+ pc = a - c;
+
+#ifdef PNG_USE_ABS
+ pa = abs(p);
+ pb = abs(pc);
+ pc = abs(p + pc);
+#else
+ pa = p < 0 ? -p : p;
+ pb = pc < 0 ? -pc : pc;
+ pc = (p + pc) < 0 ? -(p + pc) : p + pc;
+#endif
+
+ /*
+ if (pa <= pb && pa <= pc)
+ p = a;
+ else if (pb <= pc)
+ p = b;
+ else
+ p = c;
+ */
+
+ p = (pa <= pb && pa <= pc) ? a : (pb <= pc) ? b : c;
+
+ *rp = (png_byte)(((int)(*rp) + p) & 0xff);
+ rp++;
+ }
+ break;
+ }
+ default:
+ png_warning(png_ptr, "Ignoring bad adaptive filter type");
+ *row = 0;
+ break;
+ }
+}
+
+#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
+void /* PRIVATE */
+png_read_finish_row(png_structp png_ptr)
+{
+#ifdef PNG_READ_INTERLACING_SUPPORTED
+ /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
+
+ /* Start of interlace block */
+ PNG_CONST int png_pass_start[7] = {0, 4, 0, 2, 0, 1, 0};
+
+ /* Offset to next interlace block */
+ PNG_CONST int png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
+
+ /* Start of interlace block in the y direction */
+ PNG_CONST int png_pass_ystart[7] = {0, 0, 4, 0, 2, 0, 1};
+
+ /* Offset to next interlace block in the y direction */
+ PNG_CONST int png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2};
+#endif /* PNG_READ_INTERLACING_SUPPORTED */
+
+ png_debug(1, "in png_read_finish_row");
+ png_ptr->row_number++;
+ if (png_ptr->row_number < png_ptr->num_rows)
+ return;
+
+#ifdef PNG_READ_INTERLACING_SUPPORTED
+ if (png_ptr->interlaced)
+ {
+ png_ptr->row_number = 0;
+ png_memset(png_ptr->prev_row, 0,
+ png_ptr->rowbytes + 1);
+ do
+ {
+ png_ptr->pass++;
+ if (png_ptr->pass >= 7)
+ break;
+ png_ptr->iwidth = (png_ptr->width +
+ png_pass_inc[png_ptr->pass] - 1 -
+ png_pass_start[png_ptr->pass]) /
+ png_pass_inc[png_ptr->pass];
+
+ png_ptr->irowbytes = PNG_ROWBYTES(png_ptr->pixel_depth,
+ png_ptr->iwidth) + 1;
+
+ if (!(png_ptr->transformations & PNG_INTERLACE))
+ {
+ png_ptr->num_rows = (png_ptr->height +
+ png_pass_yinc[png_ptr->pass] - 1 -
+ png_pass_ystart[png_ptr->pass]) /
+ png_pass_yinc[png_ptr->pass];
+ if (!(png_ptr->num_rows))
+ continue;
+ }
+ else /* if (png_ptr->transformations & PNG_INTERLACE) */
+ break;
+ } while (png_ptr->iwidth == 0);
+
+ if (png_ptr->pass < 7)
+ return;
+ }
+#endif /* PNG_READ_INTERLACING_SUPPORTED */
+
+ if (!(png_ptr->flags & PNG_FLAG_ZLIB_FINISHED))
+ {
+ PNG_IDAT;
+ char extra;
+ int ret;
+
+ png_ptr->zstream.next_out = (Byte *)&extra;
+ png_ptr->zstream.avail_out = (uInt)1;
+ for (;;)
+ {
+ if (!(png_ptr->zstream.avail_in))
+ {
+ while (!png_ptr->idat_size)
+ {
+ png_byte chunk_length[4];
+
+ png_crc_finish(png_ptr, 0);
+
+ png_read_data(png_ptr, chunk_length, 4);
+ png_ptr->idat_size = png_get_uint_31(png_ptr, chunk_length);
+ png_reset_crc(png_ptr);
+ png_crc_read(png_ptr, png_ptr->chunk_name, 4);
+ if (png_memcmp(png_ptr->chunk_name, png_IDAT, 4))
+ png_error(png_ptr, "Not enough image data");
+
+ }
+ png_ptr->zstream.avail_in = (uInt)png_ptr->zbuf_size;
+ png_ptr->zstream.next_in = png_ptr->zbuf;
+ if (png_ptr->zbuf_size > png_ptr->idat_size)
+ png_ptr->zstream.avail_in = (uInt)png_ptr->idat_size;
+ png_crc_read(png_ptr, png_ptr->zbuf, png_ptr->zstream.avail_in);
+ png_ptr->idat_size -= png_ptr->zstream.avail_in;
+ }
+ ret = inflate(&png_ptr->zstream, Z_PARTIAL_FLUSH);
+ if (ret == Z_STREAM_END)
+ {
+ if (!(png_ptr->zstream.avail_out) || png_ptr->zstream.avail_in ||
+ png_ptr->idat_size)
+ png_warning(png_ptr, "Extra compressed data");
+ png_ptr->mode |= PNG_AFTER_IDAT;
+ png_ptr->flags |= PNG_FLAG_ZLIB_FINISHED;
+ break;
+ }
+ if (ret != Z_OK)
+ png_error(png_ptr, png_ptr->zstream.msg ? png_ptr->zstream.msg :
+ "Decompression Error");
+
+ if (!(png_ptr->zstream.avail_out))
+ {
+ png_warning(png_ptr, "Extra compressed data");
+ png_ptr->mode |= PNG_AFTER_IDAT;
+ png_ptr->flags |= PNG_FLAG_ZLIB_FINISHED;
+ break;
+ }
+
+ }
+ png_ptr->zstream.avail_out = 0;
+ }
+
+ if (png_ptr->idat_size || png_ptr->zstream.avail_in)
+ png_warning(png_ptr, "Extra compression data");
+
+ inflateReset(&png_ptr->zstream);
+
+ png_ptr->mode |= PNG_AFTER_IDAT;
+}
+#endif /* PNG_SEQUENTIAL_READ_SUPPORTED */
+
+void /* PRIVATE */
+png_read_start_row(png_structp png_ptr)
+{
+#ifdef PNG_READ_INTERLACING_SUPPORTED
+ /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
+
+ /* Start of interlace block */
+ PNG_CONST int png_pass_start[7] = {0, 4, 0, 2, 0, 1, 0};
+
+ /* Offset to next interlace block */
+ PNG_CONST int png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
+
+ /* Start of interlace block in the y direction */
+ PNG_CONST int png_pass_ystart[7] = {0, 0, 4, 0, 2, 0, 1};
+
+ /* Offset to next interlace block in the y direction */
+ PNG_CONST int png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2};
+#endif
+
+ int max_pixel_depth;
+ png_size_t row_bytes;
+
+ png_debug(1, "in png_read_start_row");
+ png_ptr->zstream.avail_in = 0;
+ png_init_read_transformations(png_ptr);
+#ifdef PNG_READ_INTERLACING_SUPPORTED
+ if (png_ptr->interlaced)
+ {
+ if (!(png_ptr->transformations & PNG_INTERLACE))
+ png_ptr->num_rows = (png_ptr->height + png_pass_yinc[0] - 1 -
+ png_pass_ystart[0]) / png_pass_yinc[0];
+ else
+ png_ptr->num_rows = png_ptr->height;
+
+ png_ptr->iwidth = (png_ptr->width +
+ png_pass_inc[png_ptr->pass] - 1 -
+ png_pass_start[png_ptr->pass]) /
+ png_pass_inc[png_ptr->pass];
+
+ png_ptr->irowbytes =
+ PNG_ROWBYTES(png_ptr->pixel_depth, png_ptr->iwidth) + 1;
+ }
+ else
+#endif /* PNG_READ_INTERLACING_SUPPORTED */
+ {
+ png_ptr->num_rows = png_ptr->height;
+ png_ptr->iwidth = png_ptr->width;
+ png_ptr->irowbytes = png_ptr->rowbytes + 1;
+ }
+ max_pixel_depth = png_ptr->pixel_depth;
+
+#ifdef PNG_READ_PACK_SUPPORTED
+ if ((png_ptr->transformations & PNG_PACK) && png_ptr->bit_depth < 8)
+ max_pixel_depth = 8;
+#endif
+
+#ifdef PNG_READ_EXPAND_SUPPORTED
+ if (png_ptr->transformations & PNG_EXPAND)
+ {
+ if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
+ {
+ if (png_ptr->num_trans)
+ max_pixel_depth = 32;
+ else
+ max_pixel_depth = 24;
+ }
+ else if (png_ptr->color_type == PNG_COLOR_TYPE_GRAY)
+ {
+ if (max_pixel_depth < 8)
+ max_pixel_depth = 8;
+ if (png_ptr->num_trans)
+ max_pixel_depth *= 2;
+ }
+ else if (png_ptr->color_type == PNG_COLOR_TYPE_RGB)
+ {
+ if (png_ptr->num_trans)
+ {
+ max_pixel_depth *= 4;
+ max_pixel_depth /= 3;
+ }
+ }
+ }
+#endif
+
+#ifdef PNG_READ_FILLER_SUPPORTED
+ if (png_ptr->transformations & (PNG_FILLER))
+ {
+ if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
+ max_pixel_depth = 32;
+ else if (png_ptr->color_type == PNG_COLOR_TYPE_GRAY)
+ {
+ if (max_pixel_depth <= 8)
+ max_pixel_depth = 16;
+ else
+ max_pixel_depth = 32;
+ }
+ else if (png_ptr->color_type == PNG_COLOR_TYPE_RGB)
+ {
+ if (max_pixel_depth <= 32)
+ max_pixel_depth = 32;
+ else
+ max_pixel_depth = 64;
+ }
+ }
+#endif
+
+#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED
+ if (png_ptr->transformations & PNG_GRAY_TO_RGB)
+ {
+ if (
+#ifdef PNG_READ_EXPAND_SUPPORTED
+ (png_ptr->num_trans && (png_ptr->transformations & PNG_EXPAND)) ||
+#endif
+#ifdef PNG_READ_FILLER_SUPPORTED
+ (png_ptr->transformations & (PNG_FILLER)) ||
+#endif
+ png_ptr->color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
+ {
+ if (max_pixel_depth <= 16)
+ max_pixel_depth = 32;
+ else
+ max_pixel_depth = 64;
+ }
+ else
+ {
+ if (max_pixel_depth <= 8)
+ {
+ if (png_ptr->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
+ max_pixel_depth = 32;
+ else
+ max_pixel_depth = 24;
+ }
+ else if (png_ptr->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
+ max_pixel_depth = 64;
+ else
+ max_pixel_depth = 48;
+ }
+ }
+#endif
+
+#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) && \
+defined(PNG_USER_TRANSFORM_PTR_SUPPORTED)
+ if (png_ptr->transformations & PNG_USER_TRANSFORM)
+ {
+ int user_pixel_depth = png_ptr->user_transform_depth*
+ png_ptr->user_transform_channels;
+ if (user_pixel_depth > max_pixel_depth)
+ max_pixel_depth=user_pixel_depth;
+ }
+#endif
+
+ /* Align the width on the next larger 8 pixels. Mainly used
+ * for interlacing
+ */
+ row_bytes = ((png_ptr->width + 7) & ~((png_uint_32)7));
+ /* Calculate the maximum bytes needed, adding a byte and a pixel
+ * for safety's sake
+ */
+ row_bytes = PNG_ROWBYTES(max_pixel_depth, row_bytes) +
+ 1 + ((max_pixel_depth + 7) >> 3);
+#ifdef PNG_MAX_MALLOC_64K
+ if (row_bytes > (png_uint_32)65536L)
+ png_error(png_ptr, "This image requires a row greater than 64KB");
+#endif
+
+ if (row_bytes + 48 > png_ptr->old_big_row_buf_size)
+ {
+ png_free(png_ptr, png_ptr->big_row_buf);
+ if (png_ptr->interlaced)
+ png_ptr->big_row_buf = (png_bytep)png_calloc(png_ptr,
+ row_bytes + 48);
+ else
+ png_ptr->big_row_buf = (png_bytep)png_malloc(png_ptr,
+ row_bytes + 48);
+ png_ptr->old_big_row_buf_size = row_bytes + 48;
+
+#ifdef PNG_ALIGNED_MEMORY_SUPPORTED
+ /* Use 16-byte aligned memory for row_buf with at least 16 bytes
+ * of padding before and after row_buf.
+ */
+ png_ptr->row_buf = png_ptr->big_row_buf + 32
+ - (((png_alloc_size_t)&(png_ptr->big_row_buf[0]) + 15) % 16);
+ png_ptr->old_big_row_buf_size = row_bytes + 48;
+#else
+ /* Use 32 bytes of padding before and 16 bytes after row_buf. */
+ png_ptr->row_buf = png_ptr->big_row_buf + 32;
+#endif
+ png_ptr->old_big_row_buf_size = row_bytes + 48;
+ }
+
+#ifdef PNG_MAX_MALLOC_64K
+ if ((png_uint_32)png_ptr->rowbytes + 1 > (png_uint_32)65536L)
+ png_error(png_ptr, "This image requires a row greater than 64KB");
+#endif
+ if ((png_uint_32)png_ptr->rowbytes > (png_uint_32)(PNG_SIZE_MAX - 1))
+ png_error(png_ptr, "Row has too many bytes to allocate in memory");
+
+ if (png_ptr->rowbytes + 1 > png_ptr->old_prev_row_size)
+ {
+ png_free(png_ptr, png_ptr->prev_row);
+ png_ptr->prev_row = (png_bytep)png_malloc(png_ptr, (png_uint_32)(
+ png_ptr->rowbytes + 1));
+ png_ptr->old_prev_row_size = png_ptr->rowbytes + 1;
+ }
+
+ png_memset(png_ptr->prev_row, 0, png_ptr->rowbytes + 1);
+
+ png_debug1(3, "width = %lu,", png_ptr->width);
+ png_debug1(3, "height = %lu,", png_ptr->height);
+ png_debug1(3, "iwidth = %lu,", png_ptr->iwidth);
+ png_debug1(3, "num_rows = %lu,", png_ptr->num_rows);
+ png_debug1(3, "rowbytes = %lu,", png_ptr->rowbytes);
+ png_debug1(3, "irowbytes = %lu", png_ptr->irowbytes);
+
+ png_ptr->flags |= PNG_FLAG_ROW_INIT;
+}
+#endif /* PNG_READ_SUPPORTED */
diff --git a/src/3rdparty/libpng/pngset.c b/src/3rdparty/libpng/pngset.c
new file mode 100644
index 0000000..adb4016
--- /dev/null
+++ b/src/3rdparty/libpng/pngset.c
@@ -0,0 +1,1163 @@
+
+/* pngset.c - storage of image information into info struct
+ *
+ * Last changed in libpng 1.4.0 [January 3, 2010]
+ * Copyright (c) 1998-2010 Glenn Randers-Pehrson
+ * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
+ * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ *
+ * The functions here are used during reads to store data from the file
+ * into the info struct, and during writes to store application data
+ * into the info struct for writing into the file. This abstracts the
+ * info struct and allows us to change the structure in the future.
+ */
+
+#define PNG_NO_PEDANTIC_WARNINGS
+#include "png.h"
+#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
+#include "pngpriv.h"
+
+#ifdef PNG_bKGD_SUPPORTED
+void PNGAPI
+png_set_bKGD(png_structp png_ptr, png_infop info_ptr, png_color_16p background)
+{
+ png_debug1(1, "in %s storage function", "bKGD");
+
+ if (png_ptr == NULL || info_ptr == NULL)
+ return;
+
+ png_memcpy(&(info_ptr->background), background, png_sizeof(png_color_16));
+ info_ptr->valid |= PNG_INFO_bKGD;
+}
+#endif
+
+#ifdef PNG_cHRM_SUPPORTED
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+void PNGAPI
+png_set_cHRM(png_structp png_ptr, png_infop info_ptr,
+ double white_x, double white_y, double red_x, double red_y,
+ double green_x, double green_y, double blue_x, double blue_y)
+{
+ png_debug1(1, "in %s storage function", "cHRM");
+
+ if (png_ptr == NULL || info_ptr == NULL)
+ return;
+
+ info_ptr->x_white = (float)white_x;
+ info_ptr->y_white = (float)white_y;
+ info_ptr->x_red = (float)red_x;
+ info_ptr->y_red = (float)red_y;
+ info_ptr->x_green = (float)green_x;
+ info_ptr->y_green = (float)green_y;
+ info_ptr->x_blue = (float)blue_x;
+ info_ptr->y_blue = (float)blue_y;
+#ifdef PNG_FIXED_POINT_SUPPORTED
+ info_ptr->int_x_white = (png_fixed_point)(white_x*100000.+0.5);
+ info_ptr->int_y_white = (png_fixed_point)(white_y*100000.+0.5);
+ info_ptr->int_x_red = (png_fixed_point)( red_x*100000.+0.5);
+ info_ptr->int_y_red = (png_fixed_point)( red_y*100000.+0.5);
+ info_ptr->int_x_green = (png_fixed_point)(green_x*100000.+0.5);
+ info_ptr->int_y_green = (png_fixed_point)(green_y*100000.+0.5);
+ info_ptr->int_x_blue = (png_fixed_point)( blue_x*100000.+0.5);
+ info_ptr->int_y_blue = (png_fixed_point)( blue_y*100000.+0.5);
+#endif
+ info_ptr->valid |= PNG_INFO_cHRM;
+}
+#endif /* PNG_FLOATING_POINT_SUPPORTED */
+
+#ifdef PNG_FIXED_POINT_SUPPORTED
+void PNGAPI
+png_set_cHRM_fixed(png_structp png_ptr, png_infop info_ptr,
+ png_fixed_point white_x, png_fixed_point white_y, png_fixed_point red_x,
+ png_fixed_point red_y, png_fixed_point green_x, png_fixed_point green_y,
+ png_fixed_point blue_x, png_fixed_point blue_y)
+{
+ png_debug1(1, "in %s storage function", "cHRM fixed");
+
+ if (png_ptr == NULL || info_ptr == NULL)
+ return;
+
+#ifdef PNG_CHECK_cHRM_SUPPORTED
+ if (png_check_cHRM_fixed(png_ptr,
+ white_x, white_y, red_x, red_y, green_x, green_y, blue_x, blue_y))
+#endif
+ {
+ info_ptr->int_x_white = white_x;
+ info_ptr->int_y_white = white_y;
+ info_ptr->int_x_red = red_x;
+ info_ptr->int_y_red = red_y;
+ info_ptr->int_x_green = green_x;
+ info_ptr->int_y_green = green_y;
+ info_ptr->int_x_blue = blue_x;
+ info_ptr->int_y_blue = blue_y;
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+ info_ptr->x_white = (float)(white_x/100000.);
+ info_ptr->y_white = (float)(white_y/100000.);
+ info_ptr->x_red = (float)( red_x/100000.);
+ info_ptr->y_red = (float)( red_y/100000.);
+ info_ptr->x_green = (float)(green_x/100000.);
+ info_ptr->y_green = (float)(green_y/100000.);
+ info_ptr->x_blue = (float)( blue_x/100000.);
+ info_ptr->y_blue = (float)( blue_y/100000.);
+#endif
+ info_ptr->valid |= PNG_INFO_cHRM;
+ }
+}
+#endif /* PNG_FIXED_POINT_SUPPORTED */
+#endif /* PNG_cHRM_SUPPORTED */
+
+#ifdef PNG_gAMA_SUPPORTED
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+void PNGAPI
+png_set_gAMA(png_structp png_ptr, png_infop info_ptr, double file_gamma)
+{
+ double png_gamma;
+
+ png_debug1(1, "in %s storage function", "gAMA");
+
+ if (png_ptr == NULL || info_ptr == NULL)
+ return;
+
+ /* Check for overflow */
+ if (file_gamma > 21474.83)
+ {
+ png_warning(png_ptr, "Limiting gamma to 21474.83");
+ png_gamma=21474.83;
+ }
+ else
+ png_gamma = file_gamma;
+ info_ptr->gamma = (float)png_gamma;
+#ifdef PNG_FIXED_POINT_SUPPORTED
+ info_ptr->int_gamma = (int)(png_gamma*100000.+.5);
+#endif
+ info_ptr->valid |= PNG_INFO_gAMA;
+ if (png_gamma == 0.0)
+ png_warning(png_ptr, "Setting gamma=0");
+}
+#endif
+void PNGAPI
+png_set_gAMA_fixed(png_structp png_ptr, png_infop info_ptr, png_fixed_point
+ int_gamma)
+{
+ png_fixed_point png_gamma;
+
+ png_debug1(1, "in %s storage function", "gAMA");
+
+ if (png_ptr == NULL || info_ptr == NULL)
+ return;
+
+ if (int_gamma > (png_fixed_point)PNG_UINT_31_MAX)
+ {
+ png_warning(png_ptr, "Limiting gamma to 21474.83");
+ png_gamma=PNG_UINT_31_MAX;
+ }
+ else
+ {
+ if (int_gamma < 0)
+ {
+ png_warning(png_ptr, "Setting negative gamma to zero");
+ png_gamma = 0;
+ }
+ else
+ png_gamma = int_gamma;
+ }
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+ info_ptr->gamma = (float)(png_gamma/100000.);
+#endif
+#ifdef PNG_FIXED_POINT_SUPPORTED
+ info_ptr->int_gamma = png_gamma;
+#endif
+ info_ptr->valid |= PNG_INFO_gAMA;
+ if (png_gamma == 0)
+ png_warning(png_ptr, "Setting gamma=0");
+}
+#endif
+
+#ifdef PNG_hIST_SUPPORTED
+void PNGAPI
+png_set_hIST(png_structp png_ptr, png_infop info_ptr, png_uint_16p hist)
+{
+ int i;
+
+ png_debug1(1, "in %s storage function", "hIST");
+
+ if (png_ptr == NULL || info_ptr == NULL)
+ return;
+
+ if (info_ptr->num_palette == 0 || info_ptr->num_palette
+ > PNG_MAX_PALETTE_LENGTH)
+ {
+ png_warning(png_ptr,
+ "Invalid palette size, hIST allocation skipped");
+ return;
+ }
+
+ png_free_data(png_ptr, info_ptr, PNG_FREE_HIST, 0);
+ /* Changed from info->num_palette to PNG_MAX_PALETTE_LENGTH in
+ * version 1.2.1
+ */
+ png_ptr->hist = (png_uint_16p)png_malloc_warn(png_ptr,
+ PNG_MAX_PALETTE_LENGTH * png_sizeof(png_uint_16));
+ if (png_ptr->hist == NULL)
+ {
+ png_warning(png_ptr, "Insufficient memory for hIST chunk data");
+ return;
+ }
+
+ for (i = 0; i < info_ptr->num_palette; i++)
+ png_ptr->hist[i] = hist[i];
+ info_ptr->hist = png_ptr->hist;
+ info_ptr->valid |= PNG_INFO_hIST;
+
+ info_ptr->free_me |= PNG_FREE_HIST;
+}
+#endif
+
+void PNGAPI
+png_set_IHDR(png_structp png_ptr, png_infop info_ptr,
+ png_uint_32 width, png_uint_32 height, int bit_depth,
+ int color_type, int interlace_type, int compression_type,
+ int filter_type)
+{
+ png_debug1(1, "in %s storage function", "IHDR");
+
+ if (png_ptr == NULL || info_ptr == NULL)
+ return;
+
+ info_ptr->width = width;
+ info_ptr->height = height;
+ info_ptr->bit_depth = (png_byte)bit_depth;
+ info_ptr->color_type = (png_byte)color_type;
+ info_ptr->compression_type = (png_byte)compression_type;
+ info_ptr->filter_type = (png_byte)filter_type;
+ info_ptr->interlace_type = (png_byte)interlace_type;
+
+ png_check_IHDR (png_ptr, info_ptr->width, info_ptr->height,
+ info_ptr->bit_depth, info_ptr->color_type, info_ptr->interlace_type,
+ info_ptr->compression_type, info_ptr->filter_type);
+
+ if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
+ info_ptr->channels = 1;
+ else if (info_ptr->color_type & PNG_COLOR_MASK_COLOR)
+ info_ptr->channels = 3;
+ else
+ info_ptr->channels = 1;
+ if (info_ptr->color_type & PNG_COLOR_MASK_ALPHA)
+ info_ptr->channels++;
+ info_ptr->pixel_depth = (png_byte)(info_ptr->channels * info_ptr->bit_depth);
+
+ /* Check for potential overflow */
+ if (width > (PNG_UINT_32_MAX
+ >> 3) /* 8-byte RGBA pixels */
+ - 64 /* bigrowbuf hack */
+ - 1 /* filter byte */
+ - 7*8 /* rounding of width to multiple of 8 pixels */
+ - 8) /* extra max_pixel_depth pad */
+ info_ptr->rowbytes = 0;
+ else
+ info_ptr->rowbytes = PNG_ROWBYTES(info_ptr->pixel_depth, width);
+}
+
+#ifdef PNG_oFFs_SUPPORTED
+void PNGAPI
+png_set_oFFs(png_structp png_ptr, png_infop info_ptr,
+ png_int_32 offset_x, png_int_32 offset_y, int unit_type)
+{
+ png_debug1(1, "in %s storage function", "oFFs");
+
+ if (png_ptr == NULL || info_ptr == NULL)
+ return;
+
+ info_ptr->x_offset = offset_x;
+ info_ptr->y_offset = offset_y;
+ info_ptr->offset_unit_type = (png_byte)unit_type;
+ info_ptr->valid |= PNG_INFO_oFFs;
+}
+#endif
+
+#ifdef PNG_pCAL_SUPPORTED
+void PNGAPI
+png_set_pCAL(png_structp png_ptr, png_infop info_ptr,
+ png_charp purpose, png_int_32 X0, png_int_32 X1, int type, int nparams,
+ png_charp units, png_charpp params)
+{
+ png_size_t length;
+ int i;
+
+ png_debug1(1, "in %s storage function", "pCAL");
+
+ if (png_ptr == NULL || info_ptr == NULL)
+ return;
+
+ length = png_strlen(purpose) + 1;
+ png_debug1(3, "allocating purpose for info (%lu bytes)",
+ (unsigned long)length);
+ info_ptr->pcal_purpose = (png_charp)png_malloc_warn(png_ptr, length);
+ if (info_ptr->pcal_purpose == NULL)
+ {
+ png_warning(png_ptr, "Insufficient memory for pCAL purpose");
+ return;
+ }
+ png_memcpy(info_ptr->pcal_purpose, purpose, length);
+
+ png_debug(3, "storing X0, X1, type, and nparams in info");
+ info_ptr->pcal_X0 = X0;
+ info_ptr->pcal_X1 = X1;
+ info_ptr->pcal_type = (png_byte)type;
+ info_ptr->pcal_nparams = (png_byte)nparams;
+
+ length = png_strlen(units) + 1;
+ png_debug1(3, "allocating units for info (%lu bytes)",
+ (unsigned long)length);
+ info_ptr->pcal_units = (png_charp)png_malloc_warn(png_ptr, length);
+ if (info_ptr->pcal_units == NULL)
+ {
+ png_warning(png_ptr, "Insufficient memory for pCAL units");
+ return;
+ }
+ png_memcpy(info_ptr->pcal_units, units, length);
+
+ info_ptr->pcal_params = (png_charpp)png_malloc_warn(png_ptr,
+ (png_size_t)((nparams + 1) * png_sizeof(png_charp)));
+ if (info_ptr->pcal_params == NULL)
+ {
+ png_warning(png_ptr, "Insufficient memory for pCAL params");
+ return;
+ }
+
+ png_memset(info_ptr->pcal_params, 0, (nparams + 1) * png_sizeof(png_charp));
+
+ for (i = 0; i < nparams; i++)
+ {
+ length = png_strlen(params[i]) + 1;
+ png_debug2(3, "allocating parameter %d for info (%lu bytes)", i,
+ (unsigned long)length);
+ info_ptr->pcal_params[i] = (png_charp)png_malloc_warn(png_ptr, length);
+ if (info_ptr->pcal_params[i] == NULL)
+ {
+ png_warning(png_ptr, "Insufficient memory for pCAL parameter");
+ return;
+ }
+ png_memcpy(info_ptr->pcal_params[i], params[i], length);
+ }
+
+ info_ptr->valid |= PNG_INFO_pCAL;
+ info_ptr->free_me |= PNG_FREE_PCAL;
+}
+#endif
+
+#if defined(PNG_READ_sCAL_SUPPORTED) || defined(PNG_WRITE_sCAL_SUPPORTED)
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+void PNGAPI
+png_set_sCAL(png_structp png_ptr, png_infop info_ptr,
+ int unit, double width, double height)
+{
+ png_debug1(1, "in %s storage function", "sCAL");
+
+ if (png_ptr == NULL || info_ptr == NULL)
+ return;
+
+ info_ptr->scal_unit = (png_byte)unit;
+ info_ptr->scal_pixel_width = width;
+ info_ptr->scal_pixel_height = height;
+
+ info_ptr->valid |= PNG_INFO_sCAL;
+}
+#else
+#ifdef PNG_FIXED_POINT_SUPPORTED
+void PNGAPI
+png_set_sCAL_s(png_structp png_ptr, png_infop info_ptr,
+ int unit, png_charp swidth, png_charp sheight)
+{
+ png_size_t length;
+
+ png_debug1(1, "in %s storage function", "sCAL");
+
+ if (png_ptr == NULL || info_ptr == NULL)
+ return;
+
+ info_ptr->scal_unit = (png_byte)unit;
+
+ length = png_strlen(swidth) + 1;
+ png_debug1(3, "allocating unit for info (%u bytes)",
+ (unsigned int)length);
+ info_ptr->scal_s_width = (png_charp)png_malloc_warn(png_ptr, length);
+ if (info_ptr->scal_s_width == NULL)
+ {
+ png_warning(png_ptr,
+ "Memory allocation failed while processing sCAL");
+ return;
+ }
+ png_memcpy(info_ptr->scal_s_width, swidth, length);
+
+ length = png_strlen(sheight) + 1;
+ png_debug1(3, "allocating unit for info (%u bytes)",
+ (unsigned int)length);
+ info_ptr->scal_s_height = (png_charp)png_malloc_warn(png_ptr, length);
+ if (info_ptr->scal_s_height == NULL)
+ {
+ png_free (png_ptr, info_ptr->scal_s_width);
+ info_ptr->scal_s_width = NULL;
+ png_warning(png_ptr,
+ "Memory allocation failed while processing sCAL");
+ return;
+ }
+ png_memcpy(info_ptr->scal_s_height, sheight, length);
+ info_ptr->valid |= PNG_INFO_sCAL;
+ info_ptr->free_me |= PNG_FREE_SCAL;
+}
+#endif
+#endif
+#endif
+
+#ifdef PNG_pHYs_SUPPORTED
+void PNGAPI
+png_set_pHYs(png_structp png_ptr, png_infop info_ptr,
+ png_uint_32 res_x, png_uint_32 res_y, int unit_type)
+{
+ png_debug1(1, "in %s storage function", "pHYs");
+
+ if (png_ptr == NULL || info_ptr == NULL)
+ return;
+
+ info_ptr->x_pixels_per_unit = res_x;
+ info_ptr->y_pixels_per_unit = res_y;
+ info_ptr->phys_unit_type = (png_byte)unit_type;
+ info_ptr->valid |= PNG_INFO_pHYs;
+}
+#endif
+
+void PNGAPI
+png_set_PLTE(png_structp png_ptr, png_infop info_ptr,
+ png_colorp palette, int num_palette)
+{
+
+ png_debug1(1, "in %s storage function", "PLTE");
+
+ if (png_ptr == NULL || info_ptr == NULL)
+ return;
+
+ if (num_palette < 0 || num_palette > PNG_MAX_PALETTE_LENGTH)
+ {
+ if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
+ png_error(png_ptr, "Invalid palette length");
+ else
+ {
+ png_warning(png_ptr, "Invalid palette length");
+ return;
+ }
+ }
+
+ /* It may not actually be necessary to set png_ptr->palette here;
+ * we do it for backward compatibility with the way the png_handle_tRNS
+ * function used to do the allocation.
+ */
+ png_free_data(png_ptr, info_ptr, PNG_FREE_PLTE, 0);
+
+ /* Changed in libpng-1.2.1 to allocate PNG_MAX_PALETTE_LENGTH instead
+ * of num_palette entries, in case of an invalid PNG file that has
+ * too-large sample values.
+ */
+ png_ptr->palette = (png_colorp)png_calloc(png_ptr,
+ PNG_MAX_PALETTE_LENGTH * png_sizeof(png_color));
+ png_memcpy(png_ptr->palette, palette, num_palette * png_sizeof(png_color));
+ info_ptr->palette = png_ptr->palette;
+ info_ptr->num_palette = png_ptr->num_palette = (png_uint_16)num_palette;
+
+ info_ptr->free_me |= PNG_FREE_PLTE;
+
+ info_ptr->valid |= PNG_INFO_PLTE;
+}
+
+#ifdef PNG_sBIT_SUPPORTED
+void PNGAPI
+png_set_sBIT(png_structp png_ptr, png_infop info_ptr,
+ png_color_8p sig_bit)
+{
+ png_debug1(1, "in %s storage function", "sBIT");
+
+ if (png_ptr == NULL || info_ptr == NULL)
+ return;
+
+ png_memcpy(&(info_ptr->sig_bit), sig_bit, png_sizeof(png_color_8));
+ info_ptr->valid |= PNG_INFO_sBIT;
+}
+#endif
+
+#ifdef PNG_sRGB_SUPPORTED
+void PNGAPI
+png_set_sRGB(png_structp png_ptr, png_infop info_ptr, int intent)
+{
+ png_debug1(1, "in %s storage function", "sRGB");
+
+ if (png_ptr == NULL || info_ptr == NULL)
+ return;
+
+ info_ptr->srgb_intent = (png_byte)intent;
+ info_ptr->valid |= PNG_INFO_sRGB;
+}
+
+void PNGAPI
+png_set_sRGB_gAMA_and_cHRM(png_structp png_ptr, png_infop info_ptr,
+ int intent)
+{
+#ifdef PNG_gAMA_SUPPORTED
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+ float file_gamma;
+#endif
+#ifdef PNG_FIXED_POINT_SUPPORTED
+ png_fixed_point int_file_gamma;
+#endif
+#endif
+#ifdef PNG_cHRM_SUPPORTED
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+ float white_x, white_y, red_x, red_y, green_x, green_y, blue_x, blue_y;
+#endif
+ png_fixed_point int_white_x, int_white_y, int_red_x, int_red_y, int_green_x,
+ int_green_y, int_blue_x, int_blue_y;
+#endif
+ png_debug1(1, "in %s storage function", "sRGB_gAMA_and_cHRM");
+
+ if (png_ptr == NULL || info_ptr == NULL)
+ return;
+
+ png_set_sRGB(png_ptr, info_ptr, intent);
+
+#ifdef PNG_gAMA_SUPPORTED
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+ file_gamma = (float).45455;
+ png_set_gAMA(png_ptr, info_ptr, file_gamma);
+#endif
+#ifdef PNG_FIXED_POINT_SUPPORTED
+ int_file_gamma = 45455L;
+ png_set_gAMA_fixed(png_ptr, info_ptr, int_file_gamma);
+#endif
+#endif
+
+#ifdef PNG_cHRM_SUPPORTED
+ int_white_x = 31270L;
+ int_white_y = 32900L;
+ int_red_x = 64000L;
+ int_red_y = 33000L;
+ int_green_x = 30000L;
+ int_green_y = 60000L;
+ int_blue_x = 15000L;
+ int_blue_y = 6000L;
+
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+ white_x = (float).3127;
+ white_y = (float).3290;
+ red_x = (float).64;
+ red_y = (float).33;
+ green_x = (float).30;
+ green_y = (float).60;
+ blue_x = (float).15;
+ blue_y = (float).06;
+#endif
+
+#ifdef PNG_FIXED_POINT_SUPPORTED
+ png_set_cHRM_fixed(png_ptr, info_ptr,
+ int_white_x, int_white_y, int_red_x, int_red_y, int_green_x,
+ int_green_y, int_blue_x, int_blue_y);
+#endif
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+ png_set_cHRM(png_ptr, info_ptr,
+ white_x, white_y, red_x, red_y, green_x, green_y, blue_x, blue_y);
+#endif
+#endif /* cHRM */
+}
+#endif /* sRGB */
+
+
+#ifdef PNG_iCCP_SUPPORTED
+void PNGAPI
+png_set_iCCP(png_structp png_ptr, png_infop info_ptr,
+ png_charp name, int compression_type,
+ png_charp profile, png_uint_32 proflen)
+{
+ png_charp new_iccp_name;
+ png_charp new_iccp_profile;
+ png_uint_32 length;
+
+ png_debug1(1, "in %s storage function", "iCCP");
+
+ if (png_ptr == NULL || info_ptr == NULL || name == NULL || profile == NULL)
+ return;
+
+ length = png_strlen(name)+1;
+ new_iccp_name = (png_charp)png_malloc_warn(png_ptr, length);
+ if (new_iccp_name == NULL)
+ {
+ png_warning(png_ptr, "Insufficient memory to process iCCP chunk");
+ return;
+ }
+ png_memcpy(new_iccp_name, name, length);
+ new_iccp_profile = (png_charp)png_malloc_warn(png_ptr, proflen);
+ if (new_iccp_profile == NULL)
+ {
+ png_free (png_ptr, new_iccp_name);
+ png_warning(png_ptr,
+ "Insufficient memory to process iCCP profile");
+ return;
+ }
+ png_memcpy(new_iccp_profile, profile, (png_size_t)proflen);
+
+ png_free_data(png_ptr, info_ptr, PNG_FREE_ICCP, 0);
+
+ info_ptr->iccp_proflen = proflen;
+ info_ptr->iccp_name = new_iccp_name;
+ info_ptr->iccp_profile = new_iccp_profile;
+ /* Compression is always zero but is here so the API and info structure
+ * does not have to change if we introduce multiple compression types
+ */
+ info_ptr->iccp_compression = (png_byte)compression_type;
+ info_ptr->free_me |= PNG_FREE_ICCP;
+ info_ptr->valid |= PNG_INFO_iCCP;
+}
+#endif
+
+#ifdef PNG_TEXT_SUPPORTED
+void PNGAPI
+png_set_text(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
+ int num_text)
+{
+ int ret;
+ ret = png_set_text_2(png_ptr, info_ptr, text_ptr, num_text);
+ if (ret)
+ png_error(png_ptr, "Insufficient memory to store text");
+}
+
+int /* PRIVATE */
+png_set_text_2(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
+ int num_text)
+{
+ int i;
+
+ png_debug1(1, "in %s storage function", ((png_ptr == NULL ||
+ png_ptr->chunk_name[0] == '\0') ?
+ "text" : (png_const_charp)png_ptr->chunk_name));
+
+ if (png_ptr == NULL || info_ptr == NULL || num_text == 0)
+ return(0);
+
+ /* Make sure we have enough space in the "text" array in info_struct
+ * to hold all of the incoming text_ptr objects.
+ */
+ if (info_ptr->num_text + num_text > info_ptr->max_text)
+ {
+ if (info_ptr->text != NULL)
+ {
+ png_textp old_text;
+ int old_max;
+
+ old_max = info_ptr->max_text;
+ info_ptr->max_text = info_ptr->num_text + num_text + 8;
+ old_text = info_ptr->text;
+ info_ptr->text = (png_textp)png_malloc_warn(png_ptr,
+ (png_size_t)(info_ptr->max_text * png_sizeof(png_text)));
+ if (info_ptr->text == NULL)
+ {
+ png_free(png_ptr, old_text);
+ return(1);
+ }
+ png_memcpy(info_ptr->text, old_text, (png_size_t)(old_max *
+ png_sizeof(png_text)));
+ png_free(png_ptr, old_text);
+ }
+ else
+ {
+ info_ptr->max_text = num_text + 8;
+ info_ptr->num_text = 0;
+ info_ptr->text = (png_textp)png_malloc_warn(png_ptr,
+ (png_size_t)(info_ptr->max_text * png_sizeof(png_text)));
+ if (info_ptr->text == NULL)
+ return(1);
+ info_ptr->free_me |= PNG_FREE_TEXT;
+ }
+ png_debug1(3, "allocated %d entries for info_ptr->text",
+ info_ptr->max_text);
+ }
+ for (i = 0; i < num_text; i++)
+ {
+ png_size_t text_length, key_len;
+ png_size_t lang_len, lang_key_len;
+ png_textp textp = &(info_ptr->text[info_ptr->num_text]);
+
+ if (text_ptr[i].key == NULL)
+ continue;
+
+ key_len = png_strlen(text_ptr[i].key);
+
+ if (text_ptr[i].compression <= 0)
+ {
+ lang_len = 0;
+ lang_key_len = 0;
+ }
+
+ else
+#ifdef PNG_iTXt_SUPPORTED
+ {
+ /* Set iTXt data */
+
+ if (text_ptr[i].lang != NULL)
+ lang_len = png_strlen(text_ptr[i].lang);
+ else
+ lang_len = 0;
+ if (text_ptr[i].lang_key != NULL)
+ lang_key_len = png_strlen(text_ptr[i].lang_key);
+ else
+ lang_key_len = 0;
+ }
+#else /* PNG_iTXt_SUPPORTED */
+ {
+ png_warning(png_ptr, "iTXt chunk not supported");
+ continue;
+ }
+#endif
+
+ if (text_ptr[i].text == NULL || text_ptr[i].text[0] == '\0')
+ {
+ text_length = 0;
+#ifdef PNG_iTXt_SUPPORTED
+ if (text_ptr[i].compression > 0)
+ textp->compression = PNG_ITXT_COMPRESSION_NONE;
+ else
+#endif
+ textp->compression = PNG_TEXT_COMPRESSION_NONE;
+ }
+
+ else
+ {
+ text_length = png_strlen(text_ptr[i].text);
+ textp->compression = text_ptr[i].compression;
+ }
+
+ textp->key = (png_charp)png_malloc_warn(png_ptr,
+ (png_size_t)
+ (key_len + text_length + lang_len + lang_key_len + 4));
+ if (textp->key == NULL)
+ return(1);
+ png_debug2(2, "Allocated %lu bytes at %x in png_set_text",
+ (unsigned long)(png_uint_32)
+ (key_len + lang_len + lang_key_len + text_length + 4),
+ (int)textp->key);
+
+ png_memcpy(textp->key, text_ptr[i].key,(png_size_t)(key_len));
+ *(textp->key + key_len) = '\0';
+#ifdef PNG_iTXt_SUPPORTED
+ if (text_ptr[i].compression > 0)
+ {
+ textp->lang = textp->key + key_len + 1;
+ png_memcpy(textp->lang, text_ptr[i].lang, lang_len);
+ *(textp->lang + lang_len) = '\0';
+ textp->lang_key = textp->lang + lang_len + 1;
+ png_memcpy(textp->lang_key, text_ptr[i].lang_key, lang_key_len);
+ *(textp->lang_key + lang_key_len) = '\0';
+ textp->text = textp->lang_key + lang_key_len + 1;
+ }
+ else
+#endif
+ {
+#ifdef PNG_iTXt_SUPPORTED
+ textp->lang=NULL;
+ textp->lang_key=NULL;
+#endif
+ textp->text = textp->key + key_len + 1;
+ }
+ if (text_length)
+ png_memcpy(textp->text, text_ptr[i].text,
+ (png_size_t)(text_length));
+ *(textp->text + text_length) = '\0';
+
+#ifdef PNG_iTXt_SUPPORTED
+ if (textp->compression > 0)
+ {
+ textp->text_length = 0;
+ textp->itxt_length = text_length;
+ }
+ else
+#endif
+
+ {
+ textp->text_length = text_length;
+#ifdef PNG_iTXt_SUPPORTED
+ textp->itxt_length = 0;
+#endif
+ }
+ info_ptr->num_text++;
+ png_debug1(3, "transferred text chunk %d", info_ptr->num_text);
+ }
+ return(0);
+}
+#endif
+
+#ifdef PNG_tIME_SUPPORTED
+void PNGAPI
+png_set_tIME(png_structp png_ptr, png_infop info_ptr, png_timep mod_time)
+{
+ png_debug1(1, "in %s storage function", "tIME");
+
+ if (png_ptr == NULL || info_ptr == NULL ||
+ (png_ptr->mode & PNG_WROTE_tIME))
+ return;
+
+ png_memcpy(&(info_ptr->mod_time), mod_time, png_sizeof(png_time));
+ info_ptr->valid |= PNG_INFO_tIME;
+}
+#endif
+
+#ifdef PNG_tRNS_SUPPORTED
+void PNGAPI
+png_set_tRNS(png_structp png_ptr, png_infop info_ptr,
+ png_bytep trans_alpha, int num_trans, png_color_16p trans_color)
+{
+ png_debug1(1, "in %s storage function", "tRNS");
+
+ if (png_ptr == NULL || info_ptr == NULL)
+ return;
+
+ if (trans_alpha != NULL)
+ {
+ /* It may not actually be necessary to set png_ptr->trans_alpha here;
+ * we do it for backward compatibility with the way the png_handle_tRNS
+ * function used to do the allocation.
+ */
+
+ png_free_data(png_ptr, info_ptr, PNG_FREE_TRNS, 0);
+
+ /* Changed from num_trans to PNG_MAX_PALETTE_LENGTH in version 1.2.1 */
+ png_ptr->trans_alpha = info_ptr->trans_alpha = (png_bytep)png_malloc(png_ptr,
+ (png_size_t)PNG_MAX_PALETTE_LENGTH);
+ if (num_trans > 0 && num_trans <= PNG_MAX_PALETTE_LENGTH)
+ png_memcpy(info_ptr->trans_alpha, trans_alpha, (png_size_t)num_trans);
+ }
+
+ if (trans_color != NULL)
+ {
+ int sample_max = (1 << info_ptr->bit_depth);
+ if ((info_ptr->color_type == PNG_COLOR_TYPE_GRAY &&
+ (int)trans_color->gray > sample_max) ||
+ (info_ptr->color_type == PNG_COLOR_TYPE_RGB &&
+ ((int)trans_color->red > sample_max ||
+ (int)trans_color->green > sample_max ||
+ (int)trans_color->blue > sample_max)))
+ png_warning(png_ptr,
+ "tRNS chunk has out-of-range samples for bit_depth");
+ png_memcpy(&(info_ptr->trans_color), trans_color,
+ png_sizeof(png_color_16));
+ if (num_trans == 0)
+ num_trans = 1;
+ }
+
+ info_ptr->num_trans = (png_uint_16)num_trans;
+ if (num_trans != 0)
+ {
+ info_ptr->valid |= PNG_INFO_tRNS;
+ info_ptr->free_me |= PNG_FREE_TRNS;
+ }
+}
+#endif
+
+#ifdef PNG_sPLT_SUPPORTED
+void PNGAPI
+png_set_sPLT(png_structp png_ptr,
+ png_infop info_ptr, png_sPLT_tp entries, int nentries)
+/*
+ * entries - array of png_sPLT_t structures
+ * to be added to the list of palettes
+ * in the info structure.
+ * nentries - number of palette structures to be
+ * added.
+ */
+{
+ png_sPLT_tp np;
+ int i;
+
+ if (png_ptr == NULL || info_ptr == NULL)
+ return;
+
+ np = (png_sPLT_tp)png_malloc_warn(png_ptr,
+ (info_ptr->splt_palettes_num + nentries) *
+ (png_size_t)png_sizeof(png_sPLT_t));
+ if (np == NULL)
+ {
+ png_warning(png_ptr, "No memory for sPLT palettes");
+ return;
+ }
+
+ png_memcpy(np, info_ptr->splt_palettes,
+ info_ptr->splt_palettes_num * png_sizeof(png_sPLT_t));
+ png_free(png_ptr, info_ptr->splt_palettes);
+ info_ptr->splt_palettes=NULL;
+
+ for (i = 0; i < nentries; i++)
+ {
+ png_sPLT_tp to = np + info_ptr->splt_palettes_num + i;
+ png_sPLT_tp from = entries + i;
+ png_uint_32 length;
+
+ length = png_strlen(from->name) + 1;
+ to->name = (png_charp)png_malloc_warn(png_ptr, (png_size_t)length);
+ if (to->name == NULL)
+ {
+ png_warning(png_ptr,
+ "Out of memory while processing sPLT chunk");
+ continue;
+ }
+ png_memcpy(to->name, from->name, length);
+ to->entries = (png_sPLT_entryp)png_malloc_warn(png_ptr,
+ (png_size_t)(from->nentries * png_sizeof(png_sPLT_entry)));
+ if (to->entries == NULL)
+ {
+ png_warning(png_ptr,
+ "Out of memory while processing sPLT chunk");
+ png_free(png_ptr, to->name);
+ to->name = NULL;
+ continue;
+ }
+ png_memcpy(to->entries, from->entries,
+ from->nentries * png_sizeof(png_sPLT_entry));
+ to->nentries = from->nentries;
+ to->depth = from->depth;
+ }
+
+ info_ptr->splt_palettes = np;
+ info_ptr->splt_palettes_num += nentries;
+ info_ptr->valid |= PNG_INFO_sPLT;
+ info_ptr->free_me |= PNG_FREE_SPLT;
+}
+#endif /* PNG_sPLT_SUPPORTED */
+
+#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
+void PNGAPI
+png_set_unknown_chunks(png_structp png_ptr,
+ png_infop info_ptr, png_unknown_chunkp unknowns, int num_unknowns)
+{
+ png_unknown_chunkp np;
+ int i;
+
+ if (png_ptr == NULL || info_ptr == NULL || num_unknowns == 0)
+ return;
+
+ np = (png_unknown_chunkp)png_malloc_warn(png_ptr,
+ (png_size_t)((info_ptr->unknown_chunks_num + num_unknowns) *
+ png_sizeof(png_unknown_chunk)));
+ if (np == NULL)
+ {
+ png_warning(png_ptr,
+ "Out of memory while processing unknown chunk");
+ return;
+ }
+
+ png_memcpy(np, info_ptr->unknown_chunks,
+ info_ptr->unknown_chunks_num * png_sizeof(png_unknown_chunk));
+ png_free(png_ptr, info_ptr->unknown_chunks);
+ info_ptr->unknown_chunks = NULL;
+
+ for (i = 0; i < num_unknowns; i++)
+ {
+ png_unknown_chunkp to = np + info_ptr->unknown_chunks_num + i;
+ png_unknown_chunkp from = unknowns + i;
+
+ png_memcpy((png_charp)to->name, (png_charp)from->name,
+ png_sizeof(from->name));
+ to->name[png_sizeof(to->name)-1] = '\0';
+ to->size = from->size;
+ /* Note our location in the read or write sequence */
+ to->location = (png_byte)(png_ptr->mode & 0xff);
+
+ if (from->size == 0)
+ to->data=NULL;
+ else
+ {
+ to->data = (png_bytep)png_malloc_warn(png_ptr,
+ (png_size_t)from->size);
+ if (to->data == NULL)
+ {
+ png_warning(png_ptr,
+ "Out of memory while processing unknown chunk");
+ to->size = 0;
+ }
+ else
+ png_memcpy(to->data, from->data, from->size);
+ }
+ }
+
+ info_ptr->unknown_chunks = np;
+ info_ptr->unknown_chunks_num += num_unknowns;
+ info_ptr->free_me |= PNG_FREE_UNKN;
+}
+void PNGAPI
+png_set_unknown_chunk_location(png_structp png_ptr, png_infop info_ptr,
+ int chunk, int location)
+{
+ if (png_ptr != NULL && info_ptr != NULL && chunk >= 0 && chunk <
+ (int)info_ptr->unknown_chunks_num)
+ info_ptr->unknown_chunks[chunk].location = (png_byte)location;
+}
+#endif
+
+
+#ifdef PNG_MNG_FEATURES_SUPPORTED
+png_uint_32 PNGAPI
+png_permit_mng_features (png_structp png_ptr, png_uint_32 mng_features)
+{
+ png_debug(1, "in png_permit_mng_features");
+
+ if (png_ptr == NULL)
+ return (png_uint_32)0;
+ png_ptr->mng_features_permitted =
+ (png_byte)(mng_features & PNG_ALL_MNG_FEATURES);
+ return (png_uint_32)png_ptr->mng_features_permitted;
+}
+#endif
+
+#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
+void PNGAPI
+png_set_keep_unknown_chunks(png_structp png_ptr, int keep, png_bytep
+ chunk_list, int num_chunks)
+{
+ png_bytep new_list, p;
+ int i, old_num_chunks;
+ if (png_ptr == NULL)
+ return;
+ if (num_chunks == 0)
+ {
+ if (keep == PNG_HANDLE_CHUNK_ALWAYS || keep == PNG_HANDLE_CHUNK_IF_SAFE)
+ png_ptr->flags |= PNG_FLAG_KEEP_UNKNOWN_CHUNKS;
+ else
+ png_ptr->flags &= ~PNG_FLAG_KEEP_UNKNOWN_CHUNKS;
+
+ if (keep == PNG_HANDLE_CHUNK_ALWAYS)
+ png_ptr->flags |= PNG_FLAG_KEEP_UNSAFE_CHUNKS;
+ else
+ png_ptr->flags &= ~PNG_FLAG_KEEP_UNSAFE_CHUNKS;
+ return;
+ }
+ if (chunk_list == NULL)
+ return;
+ old_num_chunks = png_ptr->num_chunk_list;
+ new_list=(png_bytep)png_malloc(png_ptr,
+ (png_size_t)
+ (5*(num_chunks + old_num_chunks)));
+ if (png_ptr->chunk_list != NULL)
+ {
+ png_memcpy(new_list, png_ptr->chunk_list,
+ (png_size_t)(5*old_num_chunks));
+ png_free(png_ptr, png_ptr->chunk_list);
+ png_ptr->chunk_list=NULL;
+ }
+ png_memcpy(new_list + 5*old_num_chunks, chunk_list,
+ (png_size_t)(5*num_chunks));
+ for (p = new_list + 5*old_num_chunks + 4, i = 0; i<num_chunks; i++, p += 5)
+ *p=(png_byte)keep;
+ png_ptr->num_chunk_list = old_num_chunks + num_chunks;
+ png_ptr->chunk_list = new_list;
+ png_ptr->free_me |= PNG_FREE_LIST;
+}
+#endif
+
+#ifdef PNG_READ_USER_CHUNKS_SUPPORTED
+void PNGAPI
+png_set_read_user_chunk_fn(png_structp png_ptr, png_voidp user_chunk_ptr,
+ png_user_chunk_ptr read_user_chunk_fn)
+{
+ png_debug(1, "in png_set_read_user_chunk_fn");
+
+ if (png_ptr == NULL)
+ return;
+
+ png_ptr->read_user_chunk_fn = read_user_chunk_fn;
+ png_ptr->user_chunk_ptr = user_chunk_ptr;
+}
+#endif
+
+#ifdef PNG_INFO_IMAGE_SUPPORTED
+void PNGAPI
+png_set_rows(png_structp png_ptr, png_infop info_ptr, png_bytepp row_pointers)
+{
+ png_debug1(1, "in %s storage function", "rows");
+
+ if (png_ptr == NULL || info_ptr == NULL)
+ return;
+
+ if (info_ptr->row_pointers && (info_ptr->row_pointers != row_pointers))
+ png_free_data(png_ptr, info_ptr, PNG_FREE_ROWS, 0);
+ info_ptr->row_pointers = row_pointers;
+ if (row_pointers)
+ info_ptr->valid |= PNG_INFO_IDAT;
+}
+#endif
+
+#ifdef PNG_WRITE_SUPPORTED
+void PNGAPI
+png_set_compression_buffer_size(png_structp png_ptr,
+ png_size_t size)
+{
+ if (png_ptr == NULL)
+ return;
+ png_free(png_ptr, png_ptr->zbuf);
+ png_ptr->zbuf_size = size;
+ png_ptr->zbuf = (png_bytep)png_malloc(png_ptr, size);
+ png_ptr->zstream.next_out = png_ptr->zbuf;
+ png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size;
+}
+#endif
+
+void PNGAPI
+png_set_invalid(png_structp png_ptr, png_infop info_ptr, int mask)
+{
+ if (png_ptr && info_ptr)
+ info_ptr->valid &= ~mask;
+}
+
+
+
+#ifdef PNG_SET_USER_LIMITS_SUPPORTED
+/* This function was added to libpng 1.2.6 */
+void PNGAPI
+png_set_user_limits (png_structp png_ptr, png_uint_32 user_width_max,
+ png_uint_32 user_height_max)
+{
+ /* Images with dimensions larger than these limits will be
+ * rejected by png_set_IHDR(). To accept any PNG datastream
+ * regardless of dimensions, set both limits to 0x7ffffffL.
+ */
+ if (png_ptr == NULL)
+ return;
+ png_ptr->user_width_max = user_width_max;
+ png_ptr->user_height_max = user_height_max;
+}
+/* This function was added to libpng 1.4.0 */
+void PNGAPI
+png_set_chunk_cache_max (png_structp png_ptr,
+ png_uint_32 user_chunk_cache_max)
+{
+ if (png_ptr == NULL)
+ return;
+ png_ptr->user_chunk_cache_max = user_chunk_cache_max;
+ if (user_chunk_cache_max == 0x7fffffffL) /* Unlimited */
+ png_ptr->user_chunk_cache_max = 0;
+ else
+ png_ptr->user_chunk_cache_max = user_chunk_cache_max + 1;
+}
+#endif /* ?PNG_SET_USER_LIMITS_SUPPORTED */
+
+
+#ifdef PNG_BENIGN_ERRORS_SUPPORTED
+void PNGAPI
+png_set_benign_errors(png_structp png_ptr, int allowed)
+{
+ png_debug(1, "in png_set_benign_errors");
+
+ if (allowed)
+ png_ptr->flags |= PNG_FLAG_BENIGN_ERRORS_WARN;
+ else
+ png_ptr->flags &= ~PNG_FLAG_BENIGN_ERRORS_WARN;
+}
+#endif /* PNG_BENIGN_ERRORS_SUPPORTED */
+#endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */
diff --git a/src/3rdparty/libpng/pngtest.c b/src/3rdparty/libpng/pngtest.c
new file mode 100644
index 0000000..4b70404
--- /dev/null
+++ b/src/3rdparty/libpng/pngtest.c
@@ -0,0 +1,1630 @@
+
+/* pngtest.c - a simple test program to test libpng
+ *
+ * Last changed in libpng 1.4.0 [January 3, 2010]
+ * Copyright (c) 1998-2010 Glenn Randers-Pehrson
+ * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
+ * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ *
+ * This program reads in a PNG image, writes it out again, and then
+ * compares the two files. If the files are identical, this shows that
+ * the basic chunk handling, filtering, and (de)compression code is working
+ * properly. It does not currently test all of the transforms, although
+ * it probably should.
+ *
+ * The program will report "FAIL" in certain legitimate cases:
+ * 1) when the compression level or filter selection method is changed.
+ * 2) when the maximum IDAT size (PNG_ZBUF_SIZE in pngconf.h) is not 8192.
+ * 3) unknown unsafe-to-copy ancillary chunks or unknown critical chunks
+ * exist in the input file.
+ * 4) others not listed here...
+ * In these cases, it is best to check with another tool such as "pngcheck"
+ * to see what the differences between the two files are.
+ *
+ * If a filename is given on the command-line, then this file is used
+ * for the input, rather than the default "pngtest.png". This allows
+ * testing a wide variety of files easily. You can also test a number
+ * of files at once by typing "pngtest -m file1.png file2.png ..."
+ */
+
+#include "png.h"
+#include "pngpriv.h"
+
+# include <stdio.h>
+# include <stdlib.h>
+# define FCLOSE(file) fclose(file)
+
+#ifndef PNG_STDIO_SUPPORTED
+ typedef FILE * png_FILE_p;
+#endif
+
+/* Makes pngtest verbose so we can find problems (needs to be before png.h) */
+#ifndef PNG_DEBUG
+# define PNG_DEBUG 0
+#endif
+
+#if !PNG_DEBUG
+# define SINGLE_ROWBUF_ALLOC /* Makes buffer overruns easier to nail */
+#endif
+
+/* Turn on CPU timing
+#define PNGTEST_TIMING
+*/
+
+#ifndef PNG_FLOATING_POINT_SUPPORTED
+#undef PNGTEST_TIMING
+#endif
+
+#ifdef PNGTEST_TIMING
+static float t_start, t_stop, t_decode, t_encode, t_misc;
+#include <time.h>
+#endif
+
+#ifdef PNG_TIME_RFC1123_SUPPORTED
+#define PNG_tIME_STRING_LENGTH 29
+static int tIME_chunk_present = 0;
+static char tIME_string[PNG_tIME_STRING_LENGTH] = "tIME chunk is not present";
+#endif
+
+static int verbose = 0;
+
+int test_one_file PNGARG((PNG_CONST char *inname, PNG_CONST char *outname));
+
+#ifdef __TURBOC__
+#include <mem.h>
+#endif
+
+/* Defined so I can write to a file on gui/windowing platforms */
+/* #define STDERR stderr */
+#define STDERR stdout /* For DOS */
+
+/* In case a system header (e.g., on AIX) defined jmpbuf */
+#ifdef jmpbuf
+# undef jmpbuf
+#endif
+
+/* Define png_jmpbuf() in case we are using a pre-1.0.6 version of libpng */
+#ifndef png_jmpbuf
+# define png_jmpbuf(png_ptr) png_ptr->jmpbuf
+#endif
+
+/* Example of using row callbacks to make a simple progress meter */
+static int status_pass = 1;
+static int status_dots_requested = 0;
+static int status_dots = 1;
+
+void
+read_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass);
+void
+read_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass)
+{
+ if (png_ptr == NULL || row_number > PNG_UINT_31_MAX)
+ return;
+ if (status_pass != pass)
+ {
+ fprintf(stdout, "\n Pass %d: ", pass);
+ status_pass = pass;
+ status_dots = 31;
+ }
+ status_dots--;
+ if (status_dots == 0)
+ {
+ fprintf(stdout, "\n ");
+ status_dots=30;
+ }
+ fprintf(stdout, "r");
+}
+
+void
+write_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass);
+void
+write_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass)
+{
+ if (png_ptr == NULL || row_number > PNG_UINT_31_MAX || pass > 7)
+ return;
+ fprintf(stdout, "w");
+}
+
+
+#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
+/* Example of using user transform callback (we don't transform anything,
+ * but merely examine the row filters. We set this to 256 rather than
+ * 5 in case illegal filter values are present.)
+ */
+static png_uint_32 filters_used[256];
+void
+count_filters(png_structp png_ptr, png_row_infop row_info, png_bytep data);
+void
+count_filters(png_structp png_ptr, png_row_infop row_info, png_bytep data)
+{
+ if (png_ptr != NULL && row_info != NULL)
+ ++filters_used[*(data - 1)];
+}
+#endif
+
+#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
+/* Example of using user transform callback (we don't transform anything,
+ * but merely count the zero samples)
+ */
+
+static png_uint_32 zero_samples;
+
+void
+count_zero_samples(png_structp png_ptr, png_row_infop row_info, png_bytep data);
+void
+count_zero_samples(png_structp png_ptr, png_row_infop row_info, png_bytep data)
+{
+ png_bytep dp = data;
+ if (png_ptr == NULL)return;
+
+ /* Contents of row_info:
+ * png_uint_32 width width of row
+ * png_uint_32 rowbytes number of bytes in row
+ * png_byte color_type color type of pixels
+ * png_byte bit_depth bit depth of samples
+ * png_byte channels number of channels (1-4)
+ * png_byte pixel_depth bits per pixel (depth*channels)
+ */
+
+ /* Counts the number of zero samples (or zero pixels if color_type is 3 */
+
+ if (row_info->color_type == 0 || row_info->color_type == 3)
+ {
+ int pos = 0;
+ png_uint_32 n, nstop;
+ for (n = 0, nstop=row_info->width; n<nstop; n++)
+ {
+ if (row_info->bit_depth == 1)
+ {
+ if (((*dp << pos++ ) & 0x80) == 0)
+ zero_samples++;
+ if (pos == 8)
+ {
+ pos = 0;
+ dp++;
+ }
+ }
+ if (row_info->bit_depth == 2)
+ {
+ if (((*dp << (pos+=2)) & 0xc0) == 0)
+ zero_samples++;
+ if (pos == 8)
+ {
+ pos = 0;
+ dp++;
+ }
+ }
+ if (row_info->bit_depth == 4)
+ {
+ if (((*dp << (pos+=4)) & 0xf0) == 0)
+ zero_samples++;
+ if (pos == 8)
+ {
+ pos = 0;
+ dp++;
+ }
+ }
+ if (row_info->bit_depth == 8)
+ if (*dp++ == 0)
+ zero_samples++;
+ if (row_info->bit_depth == 16)
+ {
+ if ((*dp | *(dp+1)) == 0)
+ zero_samples++;
+ dp+=2;
+ }
+ }
+ }
+ else /* Other color types */
+ {
+ png_uint_32 n, nstop;
+ int channel;
+ int color_channels = row_info->channels;
+ if (row_info->color_type > 3)color_channels--;
+
+ for (n = 0, nstop=row_info->width; n<nstop; n++)
+ {
+ for (channel = 0; channel < color_channels; channel++)
+ {
+ if (row_info->bit_depth == 8)
+ if (*dp++ == 0)
+ zero_samples++;
+ if (row_info->bit_depth == 16)
+ {
+ if ((*dp | *(dp+1)) == 0)
+ zero_samples++;
+ dp+=2;
+ }
+ }
+ if (row_info->color_type > 3)
+ {
+ dp++;
+ if (row_info->bit_depth == 16)
+ dp++;
+ }
+ }
+ }
+}
+#endif /* PNG_WRITE_USER_TRANSFORM_SUPPORTED */
+
+static int wrote_question = 0;
+
+#ifndef PNG_STDIO_SUPPORTED
+/* START of code to validate stdio-free compilation */
+/* These copies of the default read/write functions come from pngrio.c and
+ * pngwio.c. They allow "don't include stdio" testing of the library.
+ * This is the function that does the actual reading of data. If you are
+ * not reading from a standard C stream, you should create a replacement
+ * read_data function and use it at run time with png_set_read_fn(), rather
+ * than changing the library.
+ */
+
+#ifndef USE_FAR_KEYWORD
+static void
+pngtest_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
+{
+ png_size_t check = 0;
+ png_voidp io_ptr;
+
+ /* fread() returns 0 on error, so it is OK to store this in a png_size_t
+ * instead of an int, which is what fread() actually returns.
+ */
+ io_ptr = png_get_io_ptr(png_ptr);
+ if (io_ptr != NULL)
+ {
+ check = fread(data, 1, length, (png_FILE_p)io_ptr);
+ }
+
+ if (check != length)
+ {
+ png_error(png_ptr, "Read Error!");
+ }
+}
+#else
+/* This is the model-independent version. Since the standard I/O library
+ can't handle far buffers in the medium and small models, we have to copy
+ the data.
+*/
+
+#define NEAR_BUF_SIZE 1024
+#define MIN(a,b) (a <= b ? a : b)
+
+static void
+pngtest_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
+{
+ png_size_t check;
+ png_byte *n_data;
+ png_FILE_p io_ptr;
+
+ /* Check if data really is near. If so, use usual code. */
+ n_data = (png_byte *)CVT_PTR_NOCHECK(data);
+ io_ptr = (png_FILE_p)CVT_PTR(png_ptr->io_ptr);
+ if ((png_bytep)n_data == data)
+ {
+ check = fread(n_data, 1, length, io_ptr);
+ }
+ else
+ {
+ png_byte buf[NEAR_BUF_SIZE];
+ png_size_t read, remaining, err;
+ check = 0;
+ remaining = length;
+ do
+ {
+ read = MIN(NEAR_BUF_SIZE, remaining);
+ err = fread(buf, 1, 1, io_ptr);
+ png_memcpy(data, buf, read); /* Copy far buffer to near buffer */
+ if (err != read)
+ break;
+ else
+ check += err;
+ data += read;
+ remaining -= read;
+ }
+ while (remaining != 0);
+ }
+ if (check != length)
+ png_error(png_ptr, "read Error");
+}
+#endif /* USE_FAR_KEYWORD */
+
+#ifdef PNG_WRITE_FLUSH_SUPPORTED
+static void
+pngtest_flush(png_structp png_ptr)
+{
+ /* Do nothing; fflush() is said to be just a waste of energy. */
+ png_ptr = png_ptr; /* Stifle compiler warning */
+}
+#endif
+
+/* This is the function that does the actual writing of data. If you are
+ * not writing to a standard C stream, you should create a replacement
+ * write_data function and use it at run time with png_set_write_fn(), rather
+ * than changing the library.
+ */
+#ifndef USE_FAR_KEYWORD
+static void
+pngtest_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
+{
+ png_size_t check;
+
+ check = fwrite(data, 1, length, (png_FILE_p)png_ptr->io_ptr);
+ if (check != length)
+ {
+ png_error(png_ptr, "Write Error");
+ }
+}
+#else
+/* This is the model-independent version. Since the standard I/O library
+ can't handle far buffers in the medium and small models, we have to copy
+ the data.
+*/
+
+#define NEAR_BUF_SIZE 1024
+#define MIN(a,b) (a <= b ? a : b)
+
+static void
+pngtest_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
+{
+ png_size_t check;
+ png_byte *near_data; /* Needs to be "png_byte *" instead of "png_bytep" */
+ png_FILE_p io_ptr;
+
+ /* Check if data really is near. If so, use usual code. */
+ near_data = (png_byte *)CVT_PTR_NOCHECK(data);
+ io_ptr = (png_FILE_p)CVT_PTR(png_ptr->io_ptr);
+ if ((png_bytep)near_data == data)
+ {
+ check = fwrite(near_data, 1, length, io_ptr);
+ }
+ else
+ {
+ png_byte buf[NEAR_BUF_SIZE];
+ png_size_t written, remaining, err;
+ check = 0;
+ remaining = length;
+ do
+ {
+ written = MIN(NEAR_BUF_SIZE, remaining);
+ png_memcpy(buf, data, written); /* Copy far buffer to near buffer */
+ err = fwrite(buf, 1, written, io_ptr);
+ if (err != written)
+ break;
+ else
+ check += err;
+ data += written;
+ remaining -= written;
+ }
+ while (remaining != 0);
+ }
+ if (check != length)
+ {
+ png_error(png_ptr, "Write Error");
+ }
+}
+#endif /* USE_FAR_KEYWORD */
+
+/* This function is called when there is a warning, but the library thinks
+ * it can continue anyway. Replacement functions don't have to do anything
+ * here if you don't want to. In the default configuration, png_ptr is
+ * not used, but it is passed in case it may be useful.
+ */
+static void
+pngtest_warning(png_structp png_ptr, png_const_charp message)
+{
+ PNG_CONST char *name = "UNKNOWN (ERROR!)";
+ char *test;
+ test = png_get_error_ptr(png_ptr);
+ if (test == NULL)
+ fprintf(STDERR, "%s: libpng warning: %s\n", name, message);
+ else
+ fprintf(STDERR, "%s: libpng warning: %s\n", test, message);
+}
+
+/* This is the default error handling function. Note that replacements for
+ * this function MUST NOT RETURN, or the program will likely crash. This
+ * function is used by default, or if the program supplies NULL for the
+ * error function pointer in png_set_error_fn().
+ */
+static void
+pngtest_error(png_structp png_ptr, png_const_charp message)
+{
+ pngtest_warning(png_ptr, message);
+ /* We can return because png_error calls the default handler, which is
+ * actually OK in this case.
+ */
+}
+#endif /* !PNG_STDIO_SUPPORTED */
+/* END of code to validate stdio-free compilation */
+
+/* START of code to validate memory allocation and deallocation */
+#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
+
+/* Allocate memory. For reasonable files, size should never exceed
+ * 64K. However, zlib may allocate more then 64K if you don't tell
+ * it not to. See zconf.h and png.h for more information. zlib does
+ * need to allocate exactly 64K, so whatever you call here must
+ * have the ability to do that.
+ *
+ * This piece of code can be compiled to validate max 64K allocations
+ * by setting MAXSEG_64K in zlib zconf.h *or* PNG_MAX_MALLOC_64K.
+ */
+typedef struct memory_information
+{
+ png_alloc_size_t size;
+ png_voidp pointer;
+ struct memory_information FAR *next;
+} memory_information;
+typedef memory_information FAR *memory_infop;
+
+static memory_infop pinformation = NULL;
+static int current_allocation = 0;
+static int maximum_allocation = 0;
+static int total_allocation = 0;
+static int num_allocations = 0;
+
+png_voidp png_debug_malloc
+ PNGARG((png_structp png_ptr, png_alloc_size_t size));
+void png_debug_free PNGARG((png_structp png_ptr, png_voidp ptr));
+
+png_voidp
+png_debug_malloc(png_structp png_ptr, png_alloc_size_t size)
+{
+
+ /* png_malloc has already tested for NULL; png_create_struct calls
+ * png_debug_malloc directly, with png_ptr == NULL which is OK
+ */
+
+ if (size == 0)
+ return (NULL);
+
+ /* This calls the library allocator twice, once to get the requested
+ buffer and once to get a new free list entry. */
+ {
+ /* Disable malloc_fn and free_fn */
+ memory_infop pinfo;
+ png_set_mem_fn(png_ptr, NULL, NULL, NULL);
+ pinfo = (memory_infop)png_malloc(png_ptr,
+ png_sizeof(*pinfo));
+ pinfo->size = size;
+ current_allocation += size;
+ total_allocation += size;
+ num_allocations ++;
+ if (current_allocation > maximum_allocation)
+ maximum_allocation = current_allocation;
+ pinfo->pointer = png_malloc(png_ptr, size);
+ /* Restore malloc_fn and free_fn */
+ png_set_mem_fn(png_ptr,
+ NULL, png_debug_malloc, png_debug_free);
+ if (size != 0 && pinfo->pointer == NULL)
+ {
+ current_allocation -= size;
+ total_allocation -= size;
+ png_error(png_ptr,
+ "out of memory in pngtest->png_debug_malloc");
+ }
+ pinfo->next = pinformation;
+ pinformation = pinfo;
+ /* Make sure the caller isn't assuming zeroed memory. */
+ png_memset(pinfo->pointer, 0xdd, pinfo->size);
+ if (verbose)
+ printf("png_malloc %lu bytes at %x\n", (unsigned long)size,
+ pinfo->pointer);
+ return (png_voidp)(pinfo->pointer);
+ }
+}
+
+/* Free a pointer. It is removed from the list at the same time. */
+void
+png_debug_free(png_structp png_ptr, png_voidp ptr)
+{
+ if (png_ptr == NULL)
+ fprintf(STDERR, "NULL pointer to png_debug_free.\n");
+ if (ptr == 0)
+ {
+#if 0 /* This happens all the time. */
+ fprintf(STDERR, "WARNING: freeing NULL pointer\n");
+#endif
+ return;
+ }
+
+ /* Unlink the element from the list. */
+ {
+ memory_infop FAR *ppinfo = &pinformation;
+ for (;;)
+ {
+ memory_infop pinfo = *ppinfo;
+ if (pinfo->pointer == ptr)
+ {
+ *ppinfo = pinfo->next;
+ current_allocation -= pinfo->size;
+ if (current_allocation < 0)
+ fprintf(STDERR, "Duplicate free of memory\n");
+ /* We must free the list element too, but first kill
+ the memory that is to be freed. */
+ png_memset(ptr, 0x55, pinfo->size);
+ png_free_default(png_ptr, pinfo);
+ pinfo = NULL;
+ break;
+ }
+ if (pinfo->next == NULL)
+ {
+ fprintf(STDERR, "Pointer %x not found\n", (unsigned int)ptr);
+ break;
+ }
+ ppinfo = &pinfo->next;
+ }
+ }
+
+ /* Finally free the data. */
+ if (verbose)
+ printf("Freeing %x\n", ptr);
+ png_free_default(png_ptr, ptr);
+ ptr = NULL;
+}
+#endif /* PNG_USER_MEM_SUPPORTED && PNG_DEBUG */
+/* END of code to test memory allocation/deallocation */
+
+
+/* Demonstration of user chunk support of the sTER and vpAg chunks */
+#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
+
+/* (sTER is a public chunk not yet known by libpng. vpAg is a private
+chunk used in ImageMagick to store "virtual page" size). */
+
+static png_uint_32 user_chunk_data[4];
+
+ /* 0: sTER mode + 1
+ * 1: vpAg width
+ * 2: vpAg height
+ * 3: vpAg units
+ */
+
+static int read_user_chunk_callback(png_struct *png_ptr,
+ png_unknown_chunkp chunk)
+{
+ png_uint_32
+ *my_user_chunk_data;
+
+ /* Return one of the following:
+ * return (-n); chunk had an error
+ * return (0); did not recognize
+ * return (n); success
+ *
+ * The unknown chunk structure contains the chunk data:
+ * png_byte name[5];
+ * png_byte *data;
+ * png_size_t size;
+ *
+ * Note that libpng has already taken care of the CRC handling.
+ */
+
+ if (chunk->name[0] == 115 && chunk->name[1] == 84 && /* s T */
+ chunk->name[2] == 69 && chunk->name[3] == 82) /* E R */
+ {
+ /* Found sTER chunk */
+ if (chunk->size != 1)
+ return (-1); /* Error return */
+ if (chunk->data[0] != 0 && chunk->data[0] != 1)
+ return (-1); /* Invalid mode */
+ my_user_chunk_data=(png_uint_32 *) png_get_user_chunk_ptr(png_ptr);
+ my_user_chunk_data[0]=chunk->data[0]+1;
+ return (1);
+ }
+
+ if (chunk->name[0] != 118 || chunk->name[1] != 112 || /* v p */
+ chunk->name[2] != 65 || chunk->name[3] != 103) /* A g */
+ return (0); /* Did not recognize */
+
+ /* Found ImageMagick vpAg chunk */
+
+ if (chunk->size != 9)
+ return (-1); /* Error return */
+
+ my_user_chunk_data=(png_uint_32 *) png_get_user_chunk_ptr(png_ptr);
+
+ my_user_chunk_data[1]=png_get_uint_31(png_ptr, chunk->data);
+ my_user_chunk_data[2]=png_get_uint_31(png_ptr, chunk->data + 4);
+ my_user_chunk_data[3]=(png_uint_32)chunk->data[8];
+
+ return (1);
+
+}
+#endif
+/* END of code to demonstrate user chunk support */
+
+/* Test one file */
+int
+test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
+{
+ static png_FILE_p fpin;
+ static png_FILE_p fpout; /* "static" prevents setjmp corruption */
+ png_structp read_ptr;
+ png_infop read_info_ptr, end_info_ptr;
+#ifdef PNG_WRITE_SUPPORTED
+ png_structp write_ptr;
+ png_infop write_info_ptr;
+ png_infop write_end_info_ptr;
+#else
+ png_structp write_ptr = NULL;
+ png_infop write_info_ptr = NULL;
+ png_infop write_end_info_ptr = NULL;
+#endif
+ png_bytep row_buf;
+ png_uint_32 y;
+ png_uint_32 width, height;
+ int num_pass, pass;
+ int bit_depth, color_type;
+#ifdef PNG_SETJMP_SUPPORTED
+#ifdef USE_FAR_KEYWORD
+ jmp_buf jmpbuf;
+#endif
+#endif
+
+ char inbuf[256], outbuf[256];
+
+ row_buf = NULL;
+
+ if ((fpin = fopen(inname, "rb")) == NULL)
+ {
+ fprintf(STDERR, "Could not find input file %s\n", inname);
+ return (1);
+ }
+
+ if ((fpout = fopen(outname, "wb")) == NULL)
+ {
+ fprintf(STDERR, "Could not open output file %s\n", outname);
+ FCLOSE(fpin);
+ return (1);
+ }
+
+ png_debug(0, "Allocating read and write structures");
+#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
+ read_ptr =
+ png_create_read_struct_2(PNG_LIBPNG_VER_STRING, NULL,
+ NULL, NULL, NULL,
+ (png_malloc_ptr)png_debug_malloc, (png_free_ptr)png_debug_free);
+#else
+ read_ptr =
+ png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
+#endif
+#ifndef PNG_STDIO_SUPPORTED
+ png_set_error_fn(read_ptr, (png_voidp)inname, pngtest_error,
+ pngtest_warning);
+#endif
+
+#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
+ user_chunk_data[0] = 0;
+ user_chunk_data[1] = 0;
+ user_chunk_data[2] = 0;
+ user_chunk_data[3] = 0;
+ png_set_read_user_chunk_fn(read_ptr, user_chunk_data,
+ read_user_chunk_callback);
+
+#endif
+#ifdef PNG_WRITE_SUPPORTED
+#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
+ write_ptr =
+ png_create_write_struct_2(PNG_LIBPNG_VER_STRING, NULL,
+ NULL, NULL, NULL, png_debug_malloc, png_debug_free);
+#else
+ write_ptr =
+ png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
+#endif
+#ifndef PNG_STDIO_SUPPORTED
+ png_set_error_fn(write_ptr, (png_voidp)inname, pngtest_error,
+ pngtest_warning);
+#endif
+#endif
+ png_debug(0, "Allocating read_info, write_info and end_info structures");
+ read_info_ptr = png_create_info_struct(read_ptr);
+ end_info_ptr = png_create_info_struct(read_ptr);
+#ifdef PNG_WRITE_SUPPORTED
+ write_info_ptr = png_create_info_struct(write_ptr);
+ write_end_info_ptr = png_create_info_struct(write_ptr);
+#endif
+
+#ifdef PNG_SETJMP_SUPPORTED
+ png_debug(0, "Setting jmpbuf for read struct");
+#ifdef USE_FAR_KEYWORD
+ if (setjmp(jmpbuf))
+#else
+ if (setjmp(png_jmpbuf(read_ptr)))
+#endif
+ {
+ fprintf(STDERR, "%s -> %s: libpng read error\n", inname, outname);
+ png_free(read_ptr, row_buf);
+ row_buf = NULL;
+ png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr);
+#ifdef PNG_WRITE_SUPPORTED
+ png_destroy_info_struct(write_ptr, &write_end_info_ptr);
+ png_destroy_write_struct(&write_ptr, &write_info_ptr);
+#endif
+ FCLOSE(fpin);
+ FCLOSE(fpout);
+ return (1);
+ }
+#ifdef USE_FAR_KEYWORD
+ png_memcpy(png_jmpbuf(read_ptr), jmpbuf, png_sizeof(jmp_buf));
+#endif
+
+#ifdef PNG_WRITE_SUPPORTED
+ png_debug(0, "Setting jmpbuf for write struct");
+#ifdef USE_FAR_KEYWORD
+ if (setjmp(jmpbuf))
+#else
+ if (setjmp(png_jmpbuf(write_ptr)))
+#endif
+ {
+ fprintf(STDERR, "%s -> %s: libpng write error\n", inname, outname);
+ png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr);
+ png_destroy_info_struct(write_ptr, &write_end_info_ptr);
+#ifdef PNG_WRITE_SUPPORTED
+ png_destroy_write_struct(&write_ptr, &write_info_ptr);
+#endif
+ FCLOSE(fpin);
+ FCLOSE(fpout);
+ return (1);
+ }
+#ifdef USE_FAR_KEYWORD
+ png_memcpy(png_jmpbuf(write_ptr), jmpbuf, png_sizeof(jmp_buf));
+#endif
+#endif
+#endif
+
+ png_debug(0, "Initializing input and output streams");
+#ifdef PNG_STDIO_SUPPORTED
+ png_init_io(read_ptr, fpin);
+# ifdef PNG_WRITE_SUPPORTED
+ png_init_io(write_ptr, fpout);
+# endif
+#else
+ png_set_read_fn(read_ptr, (png_voidp)fpin, pngtest_read_data);
+# ifdef PNG_WRITE_SUPPORTED
+ png_set_write_fn(write_ptr, (png_voidp)fpout, pngtest_write_data,
+# ifdef PNG_WRITE_FLUSH_SUPPORTED
+ pngtest_flush);
+# else
+ NULL);
+# endif
+# endif
+#endif
+ if (status_dots_requested == 1)
+ {
+#ifdef PNG_WRITE_SUPPORTED
+ png_set_write_status_fn(write_ptr, write_row_callback);
+#endif
+ png_set_read_status_fn(read_ptr, read_row_callback);
+ }
+ else
+ {
+#ifdef PNG_WRITE_SUPPORTED
+ png_set_write_status_fn(write_ptr, NULL);
+#endif
+ png_set_read_status_fn(read_ptr, NULL);
+ }
+
+#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
+ {
+ int i;
+ for (i = 0; i<256; i++)
+ filters_used[i] = 0;
+ png_set_read_user_transform_fn(read_ptr, count_filters);
+ }
+#endif
+#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
+ zero_samples = 0;
+ png_set_write_user_transform_fn(write_ptr, count_zero_samples);
+#endif
+
+#ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
+# ifndef PNG_HANDLE_CHUNK_ALWAYS
+# define PNG_HANDLE_CHUNK_ALWAYS 3
+# endif
+ png_set_keep_unknown_chunks(read_ptr, PNG_HANDLE_CHUNK_ALWAYS,
+ NULL, 0);
+#endif
+#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
+# ifndef PNG_HANDLE_CHUNK_IF_SAFE
+# define PNG_HANDLE_CHUNK_IF_SAFE 2
+# endif
+ png_set_keep_unknown_chunks(write_ptr, PNG_HANDLE_CHUNK_IF_SAFE,
+ NULL, 0);
+#endif
+
+ png_debug(0, "Reading info struct");
+ png_read_info(read_ptr, read_info_ptr);
+
+ png_debug(0, "Transferring info struct");
+ {
+ int interlace_type, compression_type, filter_type;
+
+ if (png_get_IHDR(read_ptr, read_info_ptr, &width, &height, &bit_depth,
+ &color_type, &interlace_type, &compression_type, &filter_type))
+ {
+ png_set_IHDR(write_ptr, write_info_ptr, width, height, bit_depth,
+#ifdef PNG_WRITE_INTERLACING_SUPPORTED
+ color_type, interlace_type, compression_type, filter_type);
+#else
+ color_type, PNG_INTERLACE_NONE, compression_type, filter_type);
+#endif
+ }
+ }
+#ifdef PNG_FIXED_POINT_SUPPORTED
+#ifdef PNG_cHRM_SUPPORTED
+ {
+ png_fixed_point white_x, white_y, red_x, red_y, green_x, green_y, blue_x,
+ blue_y;
+ if (png_get_cHRM_fixed(read_ptr, read_info_ptr, &white_x, &white_y, &red_x,
+ &red_y, &green_x, &green_y, &blue_x, &blue_y))
+ {
+ png_set_cHRM_fixed(write_ptr, write_info_ptr, white_x, white_y, red_x,
+ red_y, green_x, green_y, blue_x, blue_y);
+ }
+ }
+#endif
+#ifdef PNG_gAMA_SUPPORTED
+ {
+ png_fixed_point gamma;
+
+ if (png_get_gAMA_fixed(read_ptr, read_info_ptr, &gamma))
+ png_set_gAMA_fixed(write_ptr, write_info_ptr, gamma);
+ }
+#endif
+#else /* Use floating point versions */
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+#ifdef PNG_cHRM_SUPPORTED
+ {
+ double white_x, white_y, red_x, red_y, green_x, green_y, blue_x,
+ blue_y;
+ if (png_get_cHRM(read_ptr, read_info_ptr, &white_x, &white_y, &red_x,
+ &red_y, &green_x, &green_y, &blue_x, &blue_y))
+ {
+ png_set_cHRM(write_ptr, write_info_ptr, white_x, white_y, red_x,
+ red_y, green_x, green_y, blue_x, blue_y);
+ }
+ }
+#endif
+#ifdef PNG_gAMA_SUPPORTED
+ {
+ double gamma;
+
+ if (png_get_gAMA(read_ptr, read_info_ptr, &gamma))
+ png_set_gAMA(write_ptr, write_info_ptr, gamma);
+ }
+#endif
+#endif /* Floating point */
+#endif /* Fixed point */
+#ifdef PNG_iCCP_SUPPORTED
+ {
+ png_charp name;
+ png_charp profile;
+ png_uint_32 proflen;
+ int compression_type;
+
+ if (png_get_iCCP(read_ptr, read_info_ptr, &name, &compression_type,
+ &profile, &proflen))
+ {
+ png_set_iCCP(write_ptr, write_info_ptr, name, compression_type,
+ profile, proflen);
+ }
+ }
+#endif
+#ifdef PNG_sRGB_SUPPORTED
+ {
+ int intent;
+
+ if (png_get_sRGB(read_ptr, read_info_ptr, &intent))
+ png_set_sRGB(write_ptr, write_info_ptr, intent);
+ }
+#endif
+ {
+ png_colorp palette;
+ int num_palette;
+
+ if (png_get_PLTE(read_ptr, read_info_ptr, &palette, &num_palette))
+ png_set_PLTE(write_ptr, write_info_ptr, palette, num_palette);
+ }
+#ifdef PNG_bKGD_SUPPORTED
+ {
+ png_color_16p background;
+
+ if (png_get_bKGD(read_ptr, read_info_ptr, &background))
+ {
+ png_set_bKGD(write_ptr, write_info_ptr, background);
+ }
+ }
+#endif
+#ifdef PNG_hIST_SUPPORTED
+ {
+ png_uint_16p hist;
+
+ if (png_get_hIST(read_ptr, read_info_ptr, &hist))
+ png_set_hIST(write_ptr, write_info_ptr, hist);
+ }
+#endif
+#ifdef PNG_oFFs_SUPPORTED
+ {
+ png_int_32 offset_x, offset_y;
+ int unit_type;
+
+ if (png_get_oFFs(read_ptr, read_info_ptr, &offset_x, &offset_y,
+ &unit_type))
+ {
+ png_set_oFFs(write_ptr, write_info_ptr, offset_x, offset_y, unit_type);
+ }
+ }
+#endif
+#ifdef PNG_pCAL_SUPPORTED
+ {
+ png_charp purpose, units;
+ png_charpp params;
+ png_int_32 X0, X1;
+ int type, nparams;
+
+ if (png_get_pCAL(read_ptr, read_info_ptr, &purpose, &X0, &X1, &type,
+ &nparams, &units, &params))
+ {
+ png_set_pCAL(write_ptr, write_info_ptr, purpose, X0, X1, type,
+ nparams, units, params);
+ }
+ }
+#endif
+#ifdef PNG_pHYs_SUPPORTED
+ {
+ png_uint_32 res_x, res_y;
+ int unit_type;
+
+ if (png_get_pHYs(read_ptr, read_info_ptr, &res_x, &res_y, &unit_type))
+ png_set_pHYs(write_ptr, write_info_ptr, res_x, res_y, unit_type);
+ }
+#endif
+#ifdef PNG_sBIT_SUPPORTED
+ {
+ png_color_8p sig_bit;
+
+ if (png_get_sBIT(read_ptr, read_info_ptr, &sig_bit))
+ png_set_sBIT(write_ptr, write_info_ptr, sig_bit);
+ }
+#endif
+#ifdef PNG_sCAL_SUPPORTED
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+ {
+ int unit;
+ double scal_width, scal_height;
+
+ if (png_get_sCAL(read_ptr, read_info_ptr, &unit, &scal_width,
+ &scal_height))
+ {
+ png_set_sCAL(write_ptr, write_info_ptr, unit, scal_width, scal_height);
+ }
+ }
+#else
+#ifdef PNG_FIXED_POINT_SUPPORTED
+ {
+ int unit;
+ png_charp scal_width, scal_height;
+
+ if (png_get_sCAL_s(read_ptr, read_info_ptr, &unit, &scal_width,
+ &scal_height))
+ {
+ png_set_sCAL_s(write_ptr, write_info_ptr, unit, scal_width, scal_height);
+ }
+ }
+#endif
+#endif
+#endif
+#ifdef PNG_TEXT_SUPPORTED
+ {
+ png_textp text_ptr;
+ int num_text;
+
+ if (png_get_text(read_ptr, read_info_ptr, &text_ptr, &num_text) > 0)
+ {
+ png_debug1(0, "Handling %d iTXt/tEXt/zTXt chunks", num_text);
+ png_set_text(write_ptr, write_info_ptr, text_ptr, num_text);
+ }
+ }
+#endif
+#ifdef PNG_tIME_SUPPORTED
+ {
+ png_timep mod_time;
+
+ if (png_get_tIME(read_ptr, read_info_ptr, &mod_time))
+ {
+ png_set_tIME(write_ptr, write_info_ptr, mod_time);
+#ifdef PNG_TIME_RFC1123_SUPPORTED
+ /* We have to use png_memcpy instead of "=" because the string
+ * pointed to by png_convert_to_rfc1123() gets free'ed before
+ * we use it.
+ */
+ png_memcpy(tIME_string,
+ png_convert_to_rfc1123(read_ptr, mod_time),
+ png_sizeof(tIME_string));
+ tIME_string[png_sizeof(tIME_string) - 1] = '\0';
+ tIME_chunk_present++;
+#endif /* PNG_TIME_RFC1123_SUPPORTED */
+ }
+ }
+#endif
+#ifdef PNG_tRNS_SUPPORTED
+ {
+ png_bytep trans_alpha;
+ int num_trans;
+ png_color_16p trans_color;
+
+ if (png_get_tRNS(read_ptr, read_info_ptr, &trans_alpha, &num_trans,
+ &trans_color))
+ {
+ int sample_max = (1 << bit_depth);
+ /* libpng doesn't reject a tRNS chunk with out-of-range samples */
+ if (!((color_type == PNG_COLOR_TYPE_GRAY &&
+ (int)trans_color->gray > sample_max) ||
+ (color_type == PNG_COLOR_TYPE_RGB &&
+ ((int)trans_color->red > sample_max ||
+ (int)trans_color->green > sample_max ||
+ (int)trans_color->blue > sample_max))))
+ png_set_tRNS(write_ptr, write_info_ptr, trans_alpha, num_trans,
+ trans_color);
+ }
+ }
+#endif
+#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
+ {
+ png_unknown_chunkp unknowns;
+ int num_unknowns = (int)png_get_unknown_chunks(read_ptr, read_info_ptr,
+ &unknowns);
+ if (num_unknowns)
+ {
+ png_size_t i;
+ png_set_unknown_chunks(write_ptr, write_info_ptr, unknowns,
+ num_unknowns);
+ /* Copy the locations from the read_info_ptr. The automatically
+ * generated locations in write_info_ptr are wrong because we
+ * haven't written anything yet.
+ */
+ for (i = 0; i < (png_size_t)num_unknowns; i++)
+ png_set_unknown_chunk_location(write_ptr, write_info_ptr, i,
+ unknowns[i].location);
+ }
+ }
+#endif
+
+#ifdef PNG_WRITE_SUPPORTED
+ png_debug(0, "Writing info struct");
+
+/* If we wanted, we could write info in two steps:
+ * png_write_info_before_PLTE(write_ptr, write_info_ptr);
+ */
+ png_write_info(write_ptr, write_info_ptr);
+
+#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
+ if (user_chunk_data[0] != 0)
+ {
+ png_byte png_sTER[5] = {115, 84, 69, 82, '\0'};
+
+ unsigned char
+ ster_chunk_data[1];
+
+ if (verbose)
+ fprintf(STDERR, "\n stereo mode = %lu\n",
+ (unsigned long)(user_chunk_data[0] - 1));
+ ster_chunk_data[0]=(unsigned char)(user_chunk_data[0] - 1);
+ png_write_chunk(write_ptr, png_sTER, ster_chunk_data, 1);
+ }
+ if (user_chunk_data[1] != 0 || user_chunk_data[2] != 0)
+ {
+ png_byte png_vpAg[5] = {118, 112, 65, 103, '\0'};
+
+ unsigned char
+ vpag_chunk_data[9];
+
+ if (verbose)
+ fprintf(STDERR, " vpAg = %lu x %lu, units = %lu\n",
+ (unsigned long)user_chunk_data[1],
+ (unsigned long)user_chunk_data[2],
+ (unsigned long)user_chunk_data[3]);
+ png_save_uint_32(vpag_chunk_data, user_chunk_data[1]);
+ png_save_uint_32(vpag_chunk_data + 4, user_chunk_data[2]);
+ vpag_chunk_data[8] = (unsigned char)(user_chunk_data[3] & 0xff);
+ png_write_chunk(write_ptr, png_vpAg, vpag_chunk_data, 9);
+ }
+
+#endif
+#endif
+
+#ifdef SINGLE_ROWBUF_ALLOC
+ png_debug(0, "Allocating row buffer...");
+ row_buf = (png_bytep)png_malloc(read_ptr,
+ png_get_rowbytes(read_ptr, read_info_ptr));
+ png_debug1(0, "0x%08lx", (unsigned long)row_buf);
+#endif /* SINGLE_ROWBUF_ALLOC */
+ png_debug(0, "Writing row data");
+
+#if defined(PNG_READ_INTERLACING_SUPPORTED) || \
+ defined(PNG_WRITE_INTERLACING_SUPPORTED)
+ num_pass = png_set_interlace_handling(read_ptr);
+# ifdef PNG_WRITE_SUPPORTED
+ png_set_interlace_handling(write_ptr);
+# endif
+#else
+ num_pass = 1;
+#endif
+
+#ifdef PNGTEST_TIMING
+ t_stop = (float)clock();
+ t_misc += (t_stop - t_start);
+ t_start = t_stop;
+#endif
+ for (pass = 0; pass < num_pass; pass++)
+ {
+ png_debug1(0, "Writing row data for pass %d", pass);
+ for (y = 0; y < height; y++)
+ {
+#ifndef SINGLE_ROWBUF_ALLOC
+ png_debug2(0, "Allocating row buffer (pass %d, y = %ld)...", pass, y);
+ row_buf = (png_bytep)png_malloc(read_ptr,
+ png_get_rowbytes(read_ptr, read_info_ptr));
+ png_debug2(0, "0x%08lx (%ld bytes)", (unsigned long)row_buf,
+ png_get_rowbytes(read_ptr, read_info_ptr));
+#endif /* !SINGLE_ROWBUF_ALLOC */
+ png_read_rows(read_ptr, (png_bytepp)&row_buf, NULL, 1);
+
+#ifdef PNG_WRITE_SUPPORTED
+#ifdef PNGTEST_TIMING
+ t_stop = (float)clock();
+ t_decode += (t_stop - t_start);
+ t_start = t_stop;
+#endif
+ png_write_rows(write_ptr, (png_bytepp)&row_buf, 1);
+#ifdef PNGTEST_TIMING
+ t_stop = (float)clock();
+ t_encode += (t_stop - t_start);
+ t_start = t_stop;
+#endif
+#endif /* PNG_WRITE_SUPPORTED */
+
+#ifndef SINGLE_ROWBUF_ALLOC
+ png_debug2(0, "Freeing row buffer (pass %d, y = %ld)", pass, y);
+ png_free(read_ptr, row_buf);
+ row_buf = NULL;
+#endif /* !SINGLE_ROWBUF_ALLOC */
+ }
+ }
+
+#ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
+ png_free_data(read_ptr, read_info_ptr, PNG_FREE_UNKN, -1);
+#endif
+#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
+ png_free_data(write_ptr, write_info_ptr, PNG_FREE_UNKN, -1);
+#endif
+
+ png_debug(0, "Reading and writing end_info data");
+
+ png_read_end(read_ptr, end_info_ptr);
+#ifdef PNG_TEXT_SUPPORTED
+ {
+ png_textp text_ptr;
+ int num_text;
+
+ if (png_get_text(read_ptr, end_info_ptr, &text_ptr, &num_text) > 0)
+ {
+ png_debug1(0, "Handling %d iTXt/tEXt/zTXt chunks", num_text);
+ png_set_text(write_ptr, write_end_info_ptr, text_ptr, num_text);
+ }
+ }
+#endif
+#ifdef PNG_tIME_SUPPORTED
+ {
+ png_timep mod_time;
+
+ if (png_get_tIME(read_ptr, end_info_ptr, &mod_time))
+ {
+ png_set_tIME(write_ptr, write_end_info_ptr, mod_time);
+#ifdef PNG_TIME_RFC1123_SUPPORTED
+ /* We have to use png_memcpy instead of "=" because the string
+ pointed to by png_convert_to_rfc1123() gets free'ed before
+ we use it */
+ png_memcpy(tIME_string,
+ png_convert_to_rfc1123(read_ptr, mod_time),
+ png_sizeof(tIME_string));
+ tIME_string[png_sizeof(tIME_string) - 1] = '\0';
+ tIME_chunk_present++;
+#endif /* PNG_TIME_RFC1123_SUPPORTED */
+ }
+ }
+#endif
+#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
+ {
+ png_unknown_chunkp unknowns;
+ int num_unknowns;
+ num_unknowns = (int)png_get_unknown_chunks(read_ptr, end_info_ptr,
+ &unknowns);
+ if (num_unknowns)
+ {
+ png_size_t i;
+ png_set_unknown_chunks(write_ptr, write_end_info_ptr, unknowns,
+ num_unknowns);
+ /* Copy the locations from the read_info_ptr. The automatically
+ * generated locations in write_end_info_ptr are wrong because we
+ * haven't written the end_info yet.
+ */
+ for (i = 0; i < (png_size_t)num_unknowns; i++)
+ png_set_unknown_chunk_location(write_ptr, write_end_info_ptr, i,
+ unknowns[i].location);
+ }
+ }
+#endif
+#ifdef PNG_WRITE_SUPPORTED
+ png_write_end(write_ptr, write_end_info_ptr);
+#endif
+
+#ifdef PNG_EASY_ACCESS_SUPPORTED
+ if (verbose)
+ {
+ png_uint_32 iwidth, iheight;
+ iwidth = png_get_image_width(write_ptr, write_info_ptr);
+ iheight = png_get_image_height(write_ptr, write_info_ptr);
+ fprintf(STDERR, "\n Image width = %lu, height = %lu\n",
+ (unsigned long)iwidth, (unsigned long)iheight);
+ }
+#endif
+
+ png_debug(0, "Destroying data structs");
+#ifdef SINGLE_ROWBUF_ALLOC
+ png_debug(1, "destroying row_buf for read_ptr");
+ png_free(read_ptr, row_buf);
+ row_buf = NULL;
+#endif /* SINGLE_ROWBUF_ALLOC */
+ png_debug(1, "destroying read_ptr, read_info_ptr, end_info_ptr");
+ png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr);
+#ifdef PNG_WRITE_SUPPORTED
+ png_debug(1, "destroying write_end_info_ptr");
+ png_destroy_info_struct(write_ptr, &write_end_info_ptr);
+ png_debug(1, "destroying write_ptr, write_info_ptr");
+ png_destroy_write_struct(&write_ptr, &write_info_ptr);
+#endif
+ png_debug(0, "Destruction complete.");
+
+ FCLOSE(fpin);
+ FCLOSE(fpout);
+
+ png_debug(0, "Opening files for comparison");
+ if ((fpin = fopen(inname, "rb")) == NULL)
+ {
+ fprintf(STDERR, "Could not find file %s\n", inname);
+ return (1);
+ }
+
+ if ((fpout = fopen(outname, "rb")) == NULL)
+ {
+ fprintf(STDERR, "Could not find file %s\n", outname);
+ FCLOSE(fpin);
+ return (1);
+ }
+
+ for (;;)
+ {
+ png_size_t num_in, num_out;
+
+ num_in = fread(inbuf, 1, 1, fpin);
+ num_out = fread(outbuf, 1, 1, fpout);
+
+ if (num_in != num_out)
+ {
+ fprintf(STDERR, "\nFiles %s and %s are of a different size\n",
+ inname, outname);
+ if (wrote_question == 0)
+ {
+ fprintf(STDERR,
+ " Was %s written with the same maximum IDAT chunk size (%d bytes),",
+ inname, PNG_ZBUF_SIZE);
+ fprintf(STDERR,
+ "\n filtering heuristic (libpng default), compression");
+ fprintf(STDERR,
+ " level (zlib default),\n and zlib version (%s)?\n\n",
+ ZLIB_VERSION);
+ wrote_question = 1;
+ }
+ FCLOSE(fpin);
+ FCLOSE(fpout);
+ return (0);
+ }
+
+ if (!num_in)
+ break;
+
+ if (png_memcmp(inbuf, outbuf, num_in))
+ {
+ fprintf(STDERR, "\nFiles %s and %s are different\n", inname, outname);
+ if (wrote_question == 0)
+ {
+ fprintf(STDERR,
+ " Was %s written with the same maximum IDAT chunk size (%d bytes),",
+ inname, PNG_ZBUF_SIZE);
+ fprintf(STDERR,
+ "\n filtering heuristic (libpng default), compression");
+ fprintf(STDERR,
+ " level (zlib default),\n and zlib version (%s)?\n\n",
+ ZLIB_VERSION);
+ wrote_question = 1;
+ }
+ FCLOSE(fpin);
+ FCLOSE(fpout);
+ return (0);
+ }
+ }
+
+ FCLOSE(fpin);
+ FCLOSE(fpout);
+
+ return (0);
+}
+
+/* Input and output filenames */
+#ifdef RISCOS
+static PNG_CONST char *inname = "pngtest/png";
+static PNG_CONST char *outname = "pngout/png";
+#else
+static PNG_CONST char *inname = "pngtest.png";
+static PNG_CONST char *outname = "pngout.png";
+#endif
+
+int
+main(int argc, char *argv[])
+{
+ int multiple = 0;
+ int ierror = 0;
+
+ fprintf(STDERR, "\n Testing libpng version %s\n", PNG_LIBPNG_VER_STRING);
+ fprintf(STDERR, " with zlib version %s\n", ZLIB_VERSION);
+ fprintf(STDERR, "%s", png_get_copyright(NULL));
+ /* Show the version of libpng used in building the library */
+ fprintf(STDERR, " library (%lu):%s",
+ (unsigned long)png_access_version_number(),
+ png_get_header_version(NULL));
+ /* Show the version of libpng used in building the application */
+ fprintf(STDERR, " pngtest (%lu):%s", (unsigned long)PNG_LIBPNG_VER,
+ PNG_HEADER_VERSION_STRING);
+ fprintf(STDERR, " sizeof(png_struct)=%ld, sizeof(png_info)=%ld\n",
+ (long)png_sizeof(png_struct), (long)png_sizeof(png_info));
+
+ /* Do some consistency checking on the memory allocation settings, I'm
+ * not sure this matters, but it is nice to know, the first of these
+ * tests should be impossible because of the way the macros are set
+ * in pngconf.h
+ */
+#if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K)
+ fprintf(STDERR, " NOTE: Zlib compiled for max 64k, libpng not\n");
+#endif
+ /* I think the following can happen. */
+#if !defined(MAXSEG_64K) && defined(PNG_MAX_MALLOC_64K)
+ fprintf(STDERR, " NOTE: libpng compiled for max 64k, zlib not\n");
+#endif
+
+ if (strcmp(png_libpng_ver, PNG_LIBPNG_VER_STRING))
+ {
+ fprintf(STDERR,
+ "Warning: versions are different between png.h and png.c\n");
+ fprintf(STDERR, " png.h version: %s\n", PNG_LIBPNG_VER_STRING);
+ fprintf(STDERR, " png.c version: %s\n\n", png_libpng_ver);
+ ++ierror;
+ }
+
+ if (argc > 1)
+ {
+ if (strcmp(argv[1], "-m") == 0)
+ {
+ multiple = 1;
+ status_dots_requested = 0;
+ }
+ else if (strcmp(argv[1], "-mv") == 0 ||
+ strcmp(argv[1], "-vm") == 0 )
+ {
+ multiple = 1;
+ verbose = 1;
+ status_dots_requested = 1;
+ }
+ else if (strcmp(argv[1], "-v") == 0)
+ {
+ verbose = 1;
+ status_dots_requested = 1;
+ inname = argv[2];
+ }
+ else
+ {
+ inname = argv[1];
+ status_dots_requested = 0;
+ }
+ }
+
+ if (!multiple && argc == 3 + verbose)
+ outname = argv[2 + verbose];
+
+ if ((!multiple && argc > 3 + verbose) || (multiple && argc < 2))
+ {
+ fprintf(STDERR,
+ "usage: %s [infile.png] [outfile.png]\n\t%s -m {infile.png}\n",
+ argv[0], argv[0]);
+ fprintf(STDERR,
+ " reads/writes one PNG file (without -m) or multiple files (-m)\n");
+ fprintf(STDERR,
+ " with -m %s is used as a temporary file\n", outname);
+ exit(1);
+ }
+
+ if (multiple)
+ {
+ int i;
+#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
+ int allocation_now = current_allocation;
+#endif
+ for (i=2; i<argc; ++i)
+ {
+#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
+ int k;
+#endif
+ int kerror;
+ fprintf(STDERR, "\n Testing %s:", argv[i]);
+ kerror = test_one_file(argv[i], outname);
+ if (kerror == 0)
+ {
+#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
+ fprintf(STDERR, "\n PASS (%lu zero samples)\n",
+ (unsigned long)zero_samples);
+#else
+ fprintf(STDERR, " PASS\n");
+#endif
+#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
+ for (k = 0; k<256; k++)
+ if (filters_used[k])
+ fprintf(STDERR, " Filter %d was used %lu times\n",
+ k, (unsigned long)filters_used[k]);
+#endif
+#ifdef PNG_TIME_RFC1123_SUPPORTED
+ if (tIME_chunk_present != 0)
+ fprintf(STDERR, " tIME = %s\n", tIME_string);
+ tIME_chunk_present = 0;
+#endif /* PNG_TIME_RFC1123_SUPPORTED */
+ }
+ else
+ {
+ fprintf(STDERR, " FAIL\n");
+ ierror += kerror;
+ }
+#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
+ if (allocation_now != current_allocation)
+ fprintf(STDERR, "MEMORY ERROR: %d bytes lost\n",
+ current_allocation - allocation_now);
+ if (current_allocation != 0)
+ {
+ memory_infop pinfo = pinformation;
+
+ fprintf(STDERR, "MEMORY ERROR: %d bytes still allocated\n",
+ current_allocation);
+ while (pinfo != NULL)
+ {
+ fprintf(STDERR, " %lu bytes at %x\n",
+ (unsigned long)pinfo->size,
+ (unsigned int) pinfo->pointer);
+ pinfo = pinfo->next;
+ }
+ }
+#endif
+ }
+#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
+ fprintf(STDERR, " Current memory allocation: %10d bytes\n",
+ current_allocation);
+ fprintf(STDERR, " Maximum memory allocation: %10d bytes\n",
+ maximum_allocation);
+ fprintf(STDERR, " Total memory allocation: %10d bytes\n",
+ total_allocation);
+ fprintf(STDERR, " Number of allocations: %10d\n",
+ num_allocations);
+#endif
+ }
+ else
+ {
+ int i;
+ for (i = 0; i<3; ++i)
+ {
+ int kerror;
+#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
+ int allocation_now = current_allocation;
+#endif
+ if (i == 1) status_dots_requested = 1;
+ else if (verbose == 0)status_dots_requested = 0;
+ if (i == 0 || verbose == 1 || ierror != 0)
+ fprintf(STDERR, "\n Testing %s:", inname);
+ kerror = test_one_file(inname, outname);
+ if (kerror == 0)
+ {
+ if (verbose == 1 || i == 2)
+ {
+#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
+ int k;
+#endif
+#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
+ fprintf(STDERR, "\n PASS (%lu zero samples)\n",
+ (unsigned long)zero_samples);
+#else
+ fprintf(STDERR, " PASS\n");
+#endif
+#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
+ for (k = 0; k<256; k++)
+ if (filters_used[k])
+ fprintf(STDERR, " Filter %d was used %lu times\n",
+ k,
+ (unsigned long)filters_used[k]);
+#endif
+#ifdef PNG_TIME_RFC1123_SUPPORTED
+ if (tIME_chunk_present != 0)
+ fprintf(STDERR, " tIME = %s\n", tIME_string);
+#endif /* PNG_TIME_RFC1123_SUPPORTED */
+ }
+ }
+ else
+ {
+ if (verbose == 0 && i != 2)
+ fprintf(STDERR, "\n Testing %s:", inname);
+ fprintf(STDERR, " FAIL\n");
+ ierror += kerror;
+ }
+#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
+ if (allocation_now != current_allocation)
+ fprintf(STDERR, "MEMORY ERROR: %d bytes lost\n",
+ current_allocation - allocation_now);
+ if (current_allocation != 0)
+ {
+ memory_infop pinfo = pinformation;
+
+ fprintf(STDERR, "MEMORY ERROR: %d bytes still allocated\n",
+ current_allocation);
+ while (pinfo != NULL)
+ {
+ fprintf(STDERR, " %lu bytes at %x\n",
+ (unsigned long)pinfo->size, (unsigned int)pinfo->pointer);
+ pinfo = pinfo->next;
+ }
+ }
+#endif
+ }
+#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
+ fprintf(STDERR, " Current memory allocation: %10d bytes\n",
+ current_allocation);
+ fprintf(STDERR, " Maximum memory allocation: %10d bytes\n",
+ maximum_allocation);
+ fprintf(STDERR, " Total memory allocation: %10d bytes\n",
+ total_allocation);
+ fprintf(STDERR, " Number of allocations: %10d\n",
+ num_allocations);
+#endif
+ }
+
+#ifdef PNGTEST_TIMING
+ t_stop = (float)clock();
+ t_misc += (t_stop - t_start);
+ t_start = t_stop;
+ fprintf(STDERR, " CPU time used = %.3f seconds",
+ (t_misc+t_decode+t_encode)/(float)CLOCKS_PER_SEC);
+ fprintf(STDERR, " (decoding %.3f,\n",
+ t_decode/(float)CLOCKS_PER_SEC);
+ fprintf(STDERR, " encoding %.3f ,",
+ t_encode/(float)CLOCKS_PER_SEC);
+ fprintf(STDERR, " other %.3f seconds)\n\n",
+ t_misc/(float)CLOCKS_PER_SEC);
+#endif
+
+ if (ierror == 0)
+ fprintf(STDERR, " libpng passes test\n");
+ else
+ fprintf(STDERR, " libpng FAILS test\n");
+ return (int)(ierror != 0);
+}
+
+/* Generate a compiler error if there is an old png.h in the search path. */
+typedef version_1_4_0 your_png_h_is_not_version_1_4_0;
diff --git a/src/3rdparty/libpng/pngtest.png b/src/3rdparty/libpng/pngtest.png
new file mode 100644
index 0000000..cfdd36f
--- /dev/null
+++ b/src/3rdparty/libpng/pngtest.png
Binary files differ
diff --git a/src/3rdparty/libpng/pngtrans.c b/src/3rdparty/libpng/pngtrans.c
new file mode 100644
index 0000000..7b217bb
--- /dev/null
+++ b/src/3rdparty/libpng/pngtrans.c
@@ -0,0 +1,676 @@
+
+/* pngtrans.c - transforms the data in a row (used by both readers and writers)
+ *
+ * Last changed in libpng 1.4.0 [January 3, 2010]
+ * Copyright (c) 1998-2010 Glenn Randers-Pehrson
+ * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
+ * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ */
+
+#define PNG_NO_PEDANTIC_WARNINGS
+#include "png.h"
+#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
+#include "pngpriv.h"
+
+#if defined(PNG_READ_BGR_SUPPORTED) || defined(PNG_WRITE_BGR_SUPPORTED)
+/* Turn on BGR-to-RGB mapping */
+void PNGAPI
+png_set_bgr(png_structp png_ptr)
+{
+ png_debug(1, "in png_set_bgr");
+
+ if (png_ptr == NULL)
+ return;
+ png_ptr->transformations |= PNG_BGR;
+}
+#endif
+
+#if defined(PNG_READ_SWAP_SUPPORTED) || defined(PNG_WRITE_SWAP_SUPPORTED)
+/* Turn on 16 bit byte swapping */
+void PNGAPI
+png_set_swap(png_structp png_ptr)
+{
+ png_debug(1, "in png_set_swap");
+
+ if (png_ptr == NULL)
+ return;
+ if (png_ptr->bit_depth == 16)
+ png_ptr->transformations |= PNG_SWAP_BYTES;
+}
+#endif
+
+#if defined(PNG_READ_PACK_SUPPORTED) || defined(PNG_WRITE_PACK_SUPPORTED)
+/* Turn on pixel packing */
+void PNGAPI
+png_set_packing(png_structp png_ptr)
+{
+ png_debug(1, "in png_set_packing");
+
+ if (png_ptr == NULL)
+ return;
+ if (png_ptr->bit_depth < 8)
+ {
+ png_ptr->transformations |= PNG_PACK;
+ png_ptr->usr_bit_depth = 8;
+ }
+}
+#endif
+
+#if defined(PNG_READ_PACKSWAP_SUPPORTED)||defined(PNG_WRITE_PACKSWAP_SUPPORTED)
+/* Turn on packed pixel swapping */
+void PNGAPI
+png_set_packswap(png_structp png_ptr)
+{
+ png_debug(1, "in png_set_packswap");
+
+ if (png_ptr == NULL)
+ return;
+ if (png_ptr->bit_depth < 8)
+ png_ptr->transformations |= PNG_PACKSWAP;
+}
+#endif
+
+#if defined(PNG_READ_SHIFT_SUPPORTED) || defined(PNG_WRITE_SHIFT_SUPPORTED)
+void PNGAPI
+png_set_shift(png_structp png_ptr, png_color_8p true_bits)
+{
+ png_debug(1, "in png_set_shift");
+
+ if (png_ptr == NULL)
+ return;
+ png_ptr->transformations |= PNG_SHIFT;
+ png_ptr->shift = *true_bits;
+}
+#endif
+
+#if defined(PNG_READ_INTERLACING_SUPPORTED) || \
+ defined(PNG_WRITE_INTERLACING_SUPPORTED)
+int PNGAPI
+png_set_interlace_handling(png_structp png_ptr)
+{
+ png_debug(1, "in png_set_interlace handling");
+
+ if (png_ptr && png_ptr->interlaced)
+ {
+ png_ptr->transformations |= PNG_INTERLACE;
+ return (7);
+ }
+
+ return (1);
+}
+#endif
+
+#if defined(PNG_READ_FILLER_SUPPORTED) || defined(PNG_WRITE_FILLER_SUPPORTED)
+/* Add a filler byte on read, or remove a filler or alpha byte on write.
+ * The filler type has changed in v0.95 to allow future 2-byte fillers
+ * for 48-bit input data, as well as to avoid problems with some compilers
+ * that don't like bytes as parameters.
+ */
+void PNGAPI
+png_set_filler(png_structp png_ptr, png_uint_32 filler, int filler_loc)
+{
+ png_debug(1, "in png_set_filler");
+
+ if (png_ptr == NULL)
+ return;
+ png_ptr->transformations |= PNG_FILLER;
+ png_ptr->filler = (png_uint_16)filler;
+ if (filler_loc == PNG_FILLER_AFTER)
+ png_ptr->flags |= PNG_FLAG_FILLER_AFTER;
+ else
+ png_ptr->flags &= ~PNG_FLAG_FILLER_AFTER;
+
+ /* This should probably go in the "do_read_filler" routine.
+ * I attempted to do that in libpng-1.0.1a but that caused problems
+ * so I restored it in libpng-1.0.2a
+ */
+
+ if (png_ptr->color_type == PNG_COLOR_TYPE_RGB)
+ {
+ png_ptr->usr_channels = 4;
+ }
+
+ /* Also I added this in libpng-1.0.2a (what happens when we expand
+ * a less-than-8-bit grayscale to GA? */
+
+ if (png_ptr->color_type == PNG_COLOR_TYPE_GRAY && png_ptr->bit_depth >= 8)
+ {
+ png_ptr->usr_channels = 2;
+ }
+}
+
+/* Added to libpng-1.2.7 */
+void PNGAPI
+png_set_add_alpha(png_structp png_ptr, png_uint_32 filler, int filler_loc)
+{
+ png_debug(1, "in png_set_add_alpha");
+
+ if (png_ptr == NULL)
+ return;
+ png_set_filler(png_ptr, filler, filler_loc);
+ png_ptr->transformations |= PNG_ADD_ALPHA;
+}
+
+#endif
+
+#if defined(PNG_READ_SWAP_ALPHA_SUPPORTED) || \
+ defined(PNG_WRITE_SWAP_ALPHA_SUPPORTED)
+void PNGAPI
+png_set_swap_alpha(png_structp png_ptr)
+{
+ png_debug(1, "in png_set_swap_alpha");
+
+ if (png_ptr == NULL)
+ return;
+ png_ptr->transformations |= PNG_SWAP_ALPHA;
+}
+#endif
+
+#if defined(PNG_READ_INVERT_ALPHA_SUPPORTED) || \
+ defined(PNG_WRITE_INVERT_ALPHA_SUPPORTED)
+void PNGAPI
+png_set_invert_alpha(png_structp png_ptr)
+{
+ png_debug(1, "in png_set_invert_alpha");
+
+ if (png_ptr == NULL)
+ return;
+ png_ptr->transformations |= PNG_INVERT_ALPHA;
+}
+#endif
+
+#if defined(PNG_READ_INVERT_SUPPORTED) || defined(PNG_WRITE_INVERT_SUPPORTED)
+void PNGAPI
+png_set_invert_mono(png_structp png_ptr)
+{
+ png_debug(1, "in png_set_invert_mono");
+
+ if (png_ptr == NULL)
+ return;
+ png_ptr->transformations |= PNG_INVERT_MONO;
+}
+
+/* Invert monochrome grayscale data */
+void /* PRIVATE */
+png_do_invert(png_row_infop row_info, png_bytep row)
+{
+ png_debug(1, "in png_do_invert");
+
+ /* This test removed from libpng version 1.0.13 and 1.2.0:
+ * if (row_info->bit_depth == 1 &&
+ */
+ if (row_info->color_type == PNG_COLOR_TYPE_GRAY)
+ {
+ png_bytep rp = row;
+ png_uint_32 i;
+ png_uint_32 istop = row_info->rowbytes;
+
+ for (i = 0; i < istop; i++)
+ {
+ *rp = (png_byte)(~(*rp));
+ rp++;
+ }
+ }
+ else if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA &&
+ row_info->bit_depth == 8)
+ {
+ png_bytep rp = row;
+ png_uint_32 i;
+ png_uint_32 istop = row_info->rowbytes;
+
+ for (i = 0; i < istop; i+=2)
+ {
+ *rp = (png_byte)(~(*rp));
+ rp+=2;
+ }
+ }
+ else if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA &&
+ row_info->bit_depth == 16)
+ {
+ png_bytep rp = row;
+ png_uint_32 i;
+ png_uint_32 istop = row_info->rowbytes;
+
+ for (i = 0; i < istop; i+=4)
+ {
+ *rp = (png_byte)(~(*rp));
+ *(rp+1) = (png_byte)(~(*(rp+1)));
+ rp+=4;
+ }
+ }
+}
+#endif
+
+#if defined(PNG_READ_SWAP_SUPPORTED) || defined(PNG_WRITE_SWAP_SUPPORTED)
+/* Swaps byte order on 16 bit depth images */
+void /* PRIVATE */
+png_do_swap(png_row_infop row_info, png_bytep row)
+{
+ png_debug(1, "in png_do_swap");
+
+ if (
+ row_info->bit_depth == 16)
+ {
+ png_bytep rp = row;
+ png_uint_32 i;
+ png_uint_32 istop= row_info->width * row_info->channels;
+
+ for (i = 0; i < istop; i++, rp += 2)
+ {
+ png_byte t = *rp;
+ *rp = *(rp + 1);
+ *(rp + 1) = t;
+ }
+ }
+}
+#endif
+
+#if defined(PNG_READ_PACKSWAP_SUPPORTED)||defined(PNG_WRITE_PACKSWAP_SUPPORTED)
+static PNG_CONST png_byte onebppswaptable[256] = {
+ 0x00, 0x80, 0x40, 0xC0, 0x20, 0xA0, 0x60, 0xE0,
+ 0x10, 0x90, 0x50, 0xD0, 0x30, 0xB0, 0x70, 0xF0,
+ 0x08, 0x88, 0x48, 0xC8, 0x28, 0xA8, 0x68, 0xE8,
+ 0x18, 0x98, 0x58, 0xD8, 0x38, 0xB8, 0x78, 0xF8,
+ 0x04, 0x84, 0x44, 0xC4, 0x24, 0xA4, 0x64, 0xE4,
+ 0x14, 0x94, 0x54, 0xD4, 0x34, 0xB4, 0x74, 0xF4,
+ 0x0C, 0x8C, 0x4C, 0xCC, 0x2C, 0xAC, 0x6C, 0xEC,
+ 0x1C, 0x9C, 0x5C, 0xDC, 0x3C, 0xBC, 0x7C, 0xFC,
+ 0x02, 0x82, 0x42, 0xC2, 0x22, 0xA2, 0x62, 0xE2,
+ 0x12, 0x92, 0x52, 0xD2, 0x32, 0xB2, 0x72, 0xF2,
+ 0x0A, 0x8A, 0x4A, 0xCA, 0x2A, 0xAA, 0x6A, 0xEA,
+ 0x1A, 0x9A, 0x5A, 0xDA, 0x3A, 0xBA, 0x7A, 0xFA,
+ 0x06, 0x86, 0x46, 0xC6, 0x26, 0xA6, 0x66, 0xE6,
+ 0x16, 0x96, 0x56, 0xD6, 0x36, 0xB6, 0x76, 0xF6,
+ 0x0E, 0x8E, 0x4E, 0xCE, 0x2E, 0xAE, 0x6E, 0xEE,
+ 0x1E, 0x9E, 0x5E, 0xDE, 0x3E, 0xBE, 0x7E, 0xFE,
+ 0x01, 0x81, 0x41, 0xC1, 0x21, 0xA1, 0x61, 0xE1,
+ 0x11, 0x91, 0x51, 0xD1, 0x31, 0xB1, 0x71, 0xF1,
+ 0x09, 0x89, 0x49, 0xC9, 0x29, 0xA9, 0x69, 0xE9,
+ 0x19, 0x99, 0x59, 0xD9, 0x39, 0xB9, 0x79, 0xF9,
+ 0x05, 0x85, 0x45, 0xC5, 0x25, 0xA5, 0x65, 0xE5,
+ 0x15, 0x95, 0x55, 0xD5, 0x35, 0xB5, 0x75, 0xF5,
+ 0x0D, 0x8D, 0x4D, 0xCD, 0x2D, 0xAD, 0x6D, 0xED,
+ 0x1D, 0x9D, 0x5D, 0xDD, 0x3D, 0xBD, 0x7D, 0xFD,
+ 0x03, 0x83, 0x43, 0xC3, 0x23, 0xA3, 0x63, 0xE3,
+ 0x13, 0x93, 0x53, 0xD3, 0x33, 0xB3, 0x73, 0xF3,
+ 0x0B, 0x8B, 0x4B, 0xCB, 0x2B, 0xAB, 0x6B, 0xEB,
+ 0x1B, 0x9B, 0x5B, 0xDB, 0x3B, 0xBB, 0x7B, 0xFB,
+ 0x07, 0x87, 0x47, 0xC7, 0x27, 0xA7, 0x67, 0xE7,
+ 0x17, 0x97, 0x57, 0xD7, 0x37, 0xB7, 0x77, 0xF7,
+ 0x0F, 0x8F, 0x4F, 0xCF, 0x2F, 0xAF, 0x6F, 0xEF,
+ 0x1F, 0x9F, 0x5F, 0xDF, 0x3F, 0xBF, 0x7F, 0xFF
+};
+
+static PNG_CONST png_byte twobppswaptable[256] = {
+ 0x00, 0x40, 0x80, 0xC0, 0x10, 0x50, 0x90, 0xD0,
+ 0x20, 0x60, 0xA0, 0xE0, 0x30, 0x70, 0xB0, 0xF0,
+ 0x04, 0x44, 0x84, 0xC4, 0x14, 0x54, 0x94, 0xD4,
+ 0x24, 0x64, 0xA4, 0xE4, 0x34, 0x74, 0xB4, 0xF4,
+ 0x08, 0x48, 0x88, 0xC8, 0x18, 0x58, 0x98, 0xD8,
+ 0x28, 0x68, 0xA8, 0xE8, 0x38, 0x78, 0xB8, 0xF8,
+ 0x0C, 0x4C, 0x8C, 0xCC, 0x1C, 0x5C, 0x9C, 0xDC,
+ 0x2C, 0x6C, 0xAC, 0xEC, 0x3C, 0x7C, 0xBC, 0xFC,
+ 0x01, 0x41, 0x81, 0xC1, 0x11, 0x51, 0x91, 0xD1,
+ 0x21, 0x61, 0xA1, 0xE1, 0x31, 0x71, 0xB1, 0xF1,
+ 0x05, 0x45, 0x85, 0xC5, 0x15, 0x55, 0x95, 0xD5,
+ 0x25, 0x65, 0xA5, 0xE5, 0x35, 0x75, 0xB5, 0xF5,
+ 0x09, 0x49, 0x89, 0xC9, 0x19, 0x59, 0x99, 0xD9,
+ 0x29, 0x69, 0xA9, 0xE9, 0x39, 0x79, 0xB9, 0xF9,
+ 0x0D, 0x4D, 0x8D, 0xCD, 0x1D, 0x5D, 0x9D, 0xDD,
+ 0x2D, 0x6D, 0xAD, 0xED, 0x3D, 0x7D, 0xBD, 0xFD,
+ 0x02, 0x42, 0x82, 0xC2, 0x12, 0x52, 0x92, 0xD2,
+ 0x22, 0x62, 0xA2, 0xE2, 0x32, 0x72, 0xB2, 0xF2,
+ 0x06, 0x46, 0x86, 0xC6, 0x16, 0x56, 0x96, 0xD6,
+ 0x26, 0x66, 0xA6, 0xE6, 0x36, 0x76, 0xB6, 0xF6,
+ 0x0A, 0x4A, 0x8A, 0xCA, 0x1A, 0x5A, 0x9A, 0xDA,
+ 0x2A, 0x6A, 0xAA, 0xEA, 0x3A, 0x7A, 0xBA, 0xFA,
+ 0x0E, 0x4E, 0x8E, 0xCE, 0x1E, 0x5E, 0x9E, 0xDE,
+ 0x2E, 0x6E, 0xAE, 0xEE, 0x3E, 0x7E, 0xBE, 0xFE,
+ 0x03, 0x43, 0x83, 0xC3, 0x13, 0x53, 0x93, 0xD3,
+ 0x23, 0x63, 0xA3, 0xE3, 0x33, 0x73, 0xB3, 0xF3,
+ 0x07, 0x47, 0x87, 0xC7, 0x17, 0x57, 0x97, 0xD7,
+ 0x27, 0x67, 0xA7, 0xE7, 0x37, 0x77, 0xB7, 0xF7,
+ 0x0B, 0x4B, 0x8B, 0xCB, 0x1B, 0x5B, 0x9B, 0xDB,
+ 0x2B, 0x6B, 0xAB, 0xEB, 0x3B, 0x7B, 0xBB, 0xFB,
+ 0x0F, 0x4F, 0x8F, 0xCF, 0x1F, 0x5F, 0x9F, 0xDF,
+ 0x2F, 0x6F, 0xAF, 0xEF, 0x3F, 0x7F, 0xBF, 0xFF
+};
+
+static PNG_CONST png_byte fourbppswaptable[256] = {
+ 0x00, 0x10, 0x20, 0x30, 0x40, 0x50, 0x60, 0x70,
+ 0x80, 0x90, 0xA0, 0xB0, 0xC0, 0xD0, 0xE0, 0xF0,
+ 0x01, 0x11, 0x21, 0x31, 0x41, 0x51, 0x61, 0x71,
+ 0x81, 0x91, 0xA1, 0xB1, 0xC1, 0xD1, 0xE1, 0xF1,
+ 0x02, 0x12, 0x22, 0x32, 0x42, 0x52, 0x62, 0x72,
+ 0x82, 0x92, 0xA2, 0xB2, 0xC2, 0xD2, 0xE2, 0xF2,
+ 0x03, 0x13, 0x23, 0x33, 0x43, 0x53, 0x63, 0x73,
+ 0x83, 0x93, 0xA3, 0xB3, 0xC3, 0xD3, 0xE3, 0xF3,
+ 0x04, 0x14, 0x24, 0x34, 0x44, 0x54, 0x64, 0x74,
+ 0x84, 0x94, 0xA4, 0xB4, 0xC4, 0xD4, 0xE4, 0xF4,
+ 0x05, 0x15, 0x25, 0x35, 0x45, 0x55, 0x65, 0x75,
+ 0x85, 0x95, 0xA5, 0xB5, 0xC5, 0xD5, 0xE5, 0xF5,
+ 0x06, 0x16, 0x26, 0x36, 0x46, 0x56, 0x66, 0x76,
+ 0x86, 0x96, 0xA6, 0xB6, 0xC6, 0xD6, 0xE6, 0xF6,
+ 0x07, 0x17, 0x27, 0x37, 0x47, 0x57, 0x67, 0x77,
+ 0x87, 0x97, 0xA7, 0xB7, 0xC7, 0xD7, 0xE7, 0xF7,
+ 0x08, 0x18, 0x28, 0x38, 0x48, 0x58, 0x68, 0x78,
+ 0x88, 0x98, 0xA8, 0xB8, 0xC8, 0xD8, 0xE8, 0xF8,
+ 0x09, 0x19, 0x29, 0x39, 0x49, 0x59, 0x69, 0x79,
+ 0x89, 0x99, 0xA9, 0xB9, 0xC9, 0xD9, 0xE9, 0xF9,
+ 0x0A, 0x1A, 0x2A, 0x3A, 0x4A, 0x5A, 0x6A, 0x7A,
+ 0x8A, 0x9A, 0xAA, 0xBA, 0xCA, 0xDA, 0xEA, 0xFA,
+ 0x0B, 0x1B, 0x2B, 0x3B, 0x4B, 0x5B, 0x6B, 0x7B,
+ 0x8B, 0x9B, 0xAB, 0xBB, 0xCB, 0xDB, 0xEB, 0xFB,
+ 0x0C, 0x1C, 0x2C, 0x3C, 0x4C, 0x5C, 0x6C, 0x7C,
+ 0x8C, 0x9C, 0xAC, 0xBC, 0xCC, 0xDC, 0xEC, 0xFC,
+ 0x0D, 0x1D, 0x2D, 0x3D, 0x4D, 0x5D, 0x6D, 0x7D,
+ 0x8D, 0x9D, 0xAD, 0xBD, 0xCD, 0xDD, 0xED, 0xFD,
+ 0x0E, 0x1E, 0x2E, 0x3E, 0x4E, 0x5E, 0x6E, 0x7E,
+ 0x8E, 0x9E, 0xAE, 0xBE, 0xCE, 0xDE, 0xEE, 0xFE,
+ 0x0F, 0x1F, 0x2F, 0x3F, 0x4F, 0x5F, 0x6F, 0x7F,
+ 0x8F, 0x9F, 0xAF, 0xBF, 0xCF, 0xDF, 0xEF, 0xFF
+};
+
+/* Swaps pixel packing order within bytes */
+void /* PRIVATE */
+png_do_packswap(png_row_infop row_info, png_bytep row)
+{
+ png_debug(1, "in png_do_packswap");
+
+ if (
+ row_info->bit_depth < 8)
+ {
+ png_bytep rp, end, table;
+
+ end = row + row_info->rowbytes;
+
+ if (row_info->bit_depth == 1)
+ table = (png_bytep)onebppswaptable;
+ else if (row_info->bit_depth == 2)
+ table = (png_bytep)twobppswaptable;
+ else if (row_info->bit_depth == 4)
+ table = (png_bytep)fourbppswaptable;
+ else
+ return;
+
+ for (rp = row; rp < end; rp++)
+ *rp = table[*rp];
+ }
+}
+#endif /* PNG_READ_PACKSWAP_SUPPORTED or PNG_WRITE_PACKSWAP_SUPPORTED */
+
+#if defined(PNG_WRITE_FILLER_SUPPORTED) || \
+ defined(PNG_READ_STRIP_ALPHA_SUPPORTED)
+/* Remove filler or alpha byte(s) */
+void /* PRIVATE */
+png_do_strip_filler(png_row_infop row_info, png_bytep row, png_uint_32 flags)
+{
+ png_debug(1, "in png_do_strip_filler");
+
+ {
+ png_bytep sp=row;
+ png_bytep dp=row;
+ png_uint_32 row_width=row_info->width;
+ png_uint_32 i;
+
+ if ((row_info->color_type == PNG_COLOR_TYPE_RGB ||
+ (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA &&
+ (flags & PNG_FLAG_STRIP_ALPHA))) &&
+ row_info->channels == 4)
+ {
+ if (row_info->bit_depth == 8)
+ {
+ /* This converts from RGBX or RGBA to RGB */
+ if (flags & PNG_FLAG_FILLER_AFTER)
+ {
+ dp+=3; sp+=4;
+ for (i = 1; i < row_width; i++)
+ {
+ *dp++ = *sp++;
+ *dp++ = *sp++;
+ *dp++ = *sp++;
+ sp++;
+ }
+ }
+ /* This converts from XRGB or ARGB to RGB */
+ else
+ {
+ for (i = 0; i < row_width; i++)
+ {
+ sp++;
+ *dp++ = *sp++;
+ *dp++ = *sp++;
+ *dp++ = *sp++;
+ }
+ }
+ row_info->pixel_depth = 24;
+ row_info->rowbytes = row_width * 3;
+ }
+ else /* if (row_info->bit_depth == 16) */
+ {
+ if (flags & PNG_FLAG_FILLER_AFTER)
+ {
+ /* This converts from RRGGBBXX or RRGGBBAA to RRGGBB */
+ sp += 8; dp += 6;
+ for (i = 1; i < row_width; i++)
+ {
+ /* This could be (although png_memcpy is probably slower):
+ png_memcpy(dp, sp, 6);
+ sp += 8;
+ dp += 6;
+ */
+
+ *dp++ = *sp++;
+ *dp++ = *sp++;
+ *dp++ = *sp++;
+ *dp++ = *sp++;
+ *dp++ = *sp++;
+ *dp++ = *sp++;
+ sp += 2;
+ }
+ }
+ else
+ {
+ /* This converts from XXRRGGBB or AARRGGBB to RRGGBB */
+ for (i = 0; i < row_width; i++)
+ {
+ /* This could be (although png_memcpy is probably slower):
+ png_memcpy(dp, sp, 6);
+ sp += 8;
+ dp += 6;
+ */
+
+ sp+=2;
+ *dp++ = *sp++;
+ *dp++ = *sp++;
+ *dp++ = *sp++;
+ *dp++ = *sp++;
+ *dp++ = *sp++;
+ *dp++ = *sp++;
+ }
+ }
+ row_info->pixel_depth = 48;
+ row_info->rowbytes = row_width * 6;
+ }
+ row_info->channels = 3;
+ }
+ else if ((row_info->color_type == PNG_COLOR_TYPE_GRAY ||
+ (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA &&
+ (flags & PNG_FLAG_STRIP_ALPHA))) &&
+ row_info->channels == 2)
+ {
+ if (row_info->bit_depth == 8)
+ {
+ /* This converts from GX or GA to G */
+ if (flags & PNG_FLAG_FILLER_AFTER)
+ {
+ for (i = 0; i < row_width; i++)
+ {
+ *dp++ = *sp++;
+ sp++;
+ }
+ }
+ /* This converts from XG or AG to G */
+ else
+ {
+ for (i = 0; i < row_width; i++)
+ {
+ sp++;
+ *dp++ = *sp++;
+ }
+ }
+ row_info->pixel_depth = 8;
+ row_info->rowbytes = row_width;
+ }
+ else /* if (row_info->bit_depth == 16) */
+ {
+ if (flags & PNG_FLAG_FILLER_AFTER)
+ {
+ /* This converts from GGXX or GGAA to GG */
+ sp += 4; dp += 2;
+ for (i = 1; i < row_width; i++)
+ {
+ *dp++ = *sp++;
+ *dp++ = *sp++;
+ sp += 2;
+ }
+ }
+ else
+ {
+ /* This converts from XXGG or AAGG to GG */
+ for (i = 0; i < row_width; i++)
+ {
+ sp += 2;
+ *dp++ = *sp++;
+ *dp++ = *sp++;
+ }
+ }
+ row_info->pixel_depth = 16;
+ row_info->rowbytes = row_width * 2;
+ }
+ row_info->channels = 1;
+ }
+ if (flags & PNG_FLAG_STRIP_ALPHA)
+ row_info->color_type &= ~PNG_COLOR_MASK_ALPHA;
+ }
+}
+#endif
+
+#if defined(PNG_READ_BGR_SUPPORTED) || defined(PNG_WRITE_BGR_SUPPORTED)
+/* Swaps red and blue bytes within a pixel */
+void /* PRIVATE */
+png_do_bgr(png_row_infop row_info, png_bytep row)
+{
+ png_debug(1, "in png_do_bgr");
+
+ if (
+ (row_info->color_type & PNG_COLOR_MASK_COLOR))
+ {
+ png_uint_32 row_width = row_info->width;
+ if (row_info->bit_depth == 8)
+ {
+ if (row_info->color_type == PNG_COLOR_TYPE_RGB)
+ {
+ png_bytep rp;
+ png_uint_32 i;
+
+ for (i = 0, rp = row; i < row_width; i++, rp += 3)
+ {
+ png_byte save = *rp;
+ *rp = *(rp + 2);
+ *(rp + 2) = save;
+ }
+ }
+ else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
+ {
+ png_bytep rp;
+ png_uint_32 i;
+
+ for (i = 0, rp = row; i < row_width; i++, rp += 4)
+ {
+ png_byte save = *rp;
+ *rp = *(rp + 2);
+ *(rp + 2) = save;
+ }
+ }
+ }
+ else if (row_info->bit_depth == 16)
+ {
+ if (row_info->color_type == PNG_COLOR_TYPE_RGB)
+ {
+ png_bytep rp;
+ png_uint_32 i;
+
+ for (i = 0, rp = row; i < row_width; i++, rp += 6)
+ {
+ png_byte save = *rp;
+ *rp = *(rp + 4);
+ *(rp + 4) = save;
+ save = *(rp + 1);
+ *(rp + 1) = *(rp + 5);
+ *(rp + 5) = save;
+ }
+ }
+ else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
+ {
+ png_bytep rp;
+ png_uint_32 i;
+
+ for (i = 0, rp = row; i < row_width; i++, rp += 8)
+ {
+ png_byte save = *rp;
+ *rp = *(rp + 4);
+ *(rp + 4) = save;
+ save = *(rp + 1);
+ *(rp + 1) = *(rp + 5);
+ *(rp + 5) = save;
+ }
+ }
+ }
+ }
+}
+#endif /* PNG_READ_BGR_SUPPORTED or PNG_WRITE_BGR_SUPPORTED */
+
+#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
+ defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
+void PNGAPI
+png_set_user_transform_info(png_structp png_ptr, png_voidp
+ user_transform_ptr, int user_transform_depth, int user_transform_channels)
+{
+ png_debug(1, "in png_set_user_transform_info");
+
+ if (png_ptr == NULL)
+ return;
+#ifdef PNG_USER_TRANSFORM_PTR_SUPPORTED
+ png_ptr->user_transform_ptr = user_transform_ptr;
+ png_ptr->user_transform_depth = (png_byte)user_transform_depth;
+ png_ptr->user_transform_channels = (png_byte)user_transform_channels;
+#else
+ if (user_transform_ptr || user_transform_depth || user_transform_channels)
+ png_warning(png_ptr,
+ "This version of libpng does not support user transform info");
+#endif
+}
+#endif
+
+/* This function returns a pointer to the user_transform_ptr associated with
+ * the user transform functions. The application should free any memory
+ * associated with this pointer before png_write_destroy and png_read_destroy
+ * are called.
+ */
+png_voidp PNGAPI
+png_get_user_transform_ptr(png_structp png_ptr)
+{
+ if (png_ptr == NULL)
+ return (NULL);
+#ifdef PNG_USER_TRANSFORM_PTR_SUPPORTED
+ return ((png_voidp)png_ptr->user_transform_ptr);
+#else
+ return (NULL);
+#endif
+}
+#endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */
diff --git a/src/3rdparty/libpng/pngwio.c b/src/3rdparty/libpng/pngwio.c
new file mode 100644
index 0000000..f4d995b
--- /dev/null
+++ b/src/3rdparty/libpng/pngwio.c
@@ -0,0 +1,241 @@
+
+/* pngwio.c - functions for data output
+ *
+ * Last changed in libpng 1.4.0 [January 3, 2010]
+ * Copyright (c) 1998-2010 Glenn Randers-Pehrson
+ * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
+ * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ *
+ * This file provides a location for all output. Users who need
+ * special handling are expected to write functions that have the same
+ * arguments as these and perform similar functions, but that possibly
+ * use different output methods. Note that you shouldn't change these
+ * functions, but rather write replacement functions and then change
+ * them at run time with png_set_write_fn(...).
+ */
+
+#define PNG_NO_PEDANTIC_WARNINGS
+#include "png.h"
+#ifdef PNG_WRITE_SUPPORTED
+#include "pngpriv.h"
+
+/* Write the data to whatever output you are using. The default routine
+ * writes to a file pointer. Note that this routine sometimes gets called
+ * with very small lengths, so you should implement some kind of simple
+ * buffering if you are using unbuffered writes. This should never be asked
+ * to write more than 64K on a 16 bit machine.
+ */
+
+void /* PRIVATE */
+png_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
+{
+ if (png_ptr->write_data_fn != NULL )
+ (*(png_ptr->write_data_fn))(png_ptr, data, length);
+ else
+ png_error(png_ptr, "Call to NULL write function");
+}
+
+#ifdef PNG_STDIO_SUPPORTED
+/* This is the function that does the actual writing of data. If you are
+ * not writing to a standard C stream, you should create a replacement
+ * write_data function and use it at run time with png_set_write_fn(), rather
+ * than changing the library.
+ */
+#ifndef USE_FAR_KEYWORD
+void PNGAPI
+png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
+{
+ png_uint_32 check;
+
+ if (png_ptr == NULL)
+ return;
+ check = fwrite(data, 1, length, (png_FILE_p)(png_ptr->io_ptr));
+ if (check != length)
+ png_error(png_ptr, "Write Error");
+}
+#else
+/* This is the model-independent version. Since the standard I/O library
+ * can't handle far buffers in the medium and small models, we have to copy
+ * the data.
+ */
+
+#define NEAR_BUF_SIZE 1024
+#define MIN(a,b) (a <= b ? a : b)
+
+void PNGAPI
+png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
+{
+ png_uint_32 check;
+ png_byte *near_data; /* Needs to be "png_byte *" instead of "png_bytep" */
+ png_FILE_p io_ptr;
+
+ if (png_ptr == NULL)
+ return;
+ /* Check if data really is near. If so, use usual code. */
+ near_data = (png_byte *)CVT_PTR_NOCHECK(data);
+ io_ptr = (png_FILE_p)CVT_PTR(png_ptr->io_ptr);
+ if ((png_bytep)near_data == data)
+ {
+ check = fwrite(near_data, 1, length, io_ptr);
+ }
+ else
+ {
+ png_byte buf[NEAR_BUF_SIZE];
+ png_size_t written, remaining, err;
+ check = 0;
+ remaining = length;
+ do
+ {
+ written = MIN(NEAR_BUF_SIZE, remaining);
+ png_memcpy(buf, data, written); /* Copy far buffer to near buffer */
+ err = fwrite(buf, 1, written, io_ptr);
+ if (err != written)
+ break;
+
+ else
+ check += err;
+
+ data += written;
+ remaining -= written;
+ }
+ while (remaining != 0);
+ }
+ if (check != length)
+ png_error(png_ptr, "Write Error");
+}
+
+#endif
+#endif
+
+/* This function is called to output any data pending writing (normally
+ * to disk). After png_flush is called, there should be no data pending
+ * writing in any buffers.
+ */
+#ifdef PNG_WRITE_FLUSH_SUPPORTED
+void /* PRIVATE */
+png_flush(png_structp png_ptr)
+{
+ if (png_ptr->output_flush_fn != NULL)
+ (*(png_ptr->output_flush_fn))(png_ptr);
+}
+
+#ifdef PNG_STDIO_SUPPORTED
+void PNGAPI
+png_default_flush(png_structp png_ptr)
+{
+ png_FILE_p io_ptr;
+ if (png_ptr == NULL)
+ return;
+ io_ptr = (png_FILE_p)CVT_PTR((png_ptr->io_ptr));
+ fflush(io_ptr);
+}
+#endif
+#endif
+
+/* This function allows the application to supply new output functions for
+ * libpng if standard C streams aren't being used.
+ *
+ * This function takes as its arguments:
+ * png_ptr - pointer to a png output data structure
+ * io_ptr - pointer to user supplied structure containing info about
+ * the output functions. May be NULL.
+ * write_data_fn - pointer to a new output function that takes as its
+ * arguments a pointer to a png_struct, a pointer to
+ * data to be written, and a 32-bit unsigned int that is
+ * the number of bytes to be written. The new write
+ * function should call png_error(png_ptr, "Error msg")
+ * to exit and output any fatal error messages. May be
+ * NULL, in which case libpng's default function will
+ * be used.
+ * flush_data_fn - pointer to a new flush function that takes as its
+ * arguments a pointer to a png_struct. After a call to
+ * the flush function, there should be no data in any buffers
+ * or pending transmission. If the output method doesn't do
+ * any buffering of ouput, a function prototype must still be
+ * supplied although it doesn't have to do anything. If
+ * PNG_WRITE_FLUSH_SUPPORTED is not defined at libpng compile
+ * time, output_flush_fn will be ignored, although it must be
+ * supplied for compatibility. May be NULL, in which case
+ * libpng's default function will be used, if
+ * PNG_WRITE_FLUSH_SUPPORTED is defined. This is not
+ * a good idea if io_ptr does not point to a standard
+ * *FILE structure.
+ */
+void PNGAPI
+png_set_write_fn(png_structp png_ptr, png_voidp io_ptr,
+ png_rw_ptr write_data_fn, png_flush_ptr output_flush_fn)
+{
+ if (png_ptr == NULL)
+ return;
+
+ png_ptr->io_ptr = io_ptr;
+
+#ifdef PNG_STDIO_SUPPORTED
+ if (write_data_fn != NULL)
+ png_ptr->write_data_fn = write_data_fn;
+
+ else
+ png_ptr->write_data_fn = png_default_write_data;
+#else
+ png_ptr->write_data_fn = write_data_fn;
+#endif
+
+#ifdef PNG_WRITE_FLUSH_SUPPORTED
+#ifdef PNG_STDIO_SUPPORTED
+ if (output_flush_fn != NULL)
+ png_ptr->output_flush_fn = output_flush_fn;
+
+ else
+ png_ptr->output_flush_fn = png_default_flush;
+#else
+ png_ptr->output_flush_fn = output_flush_fn;
+#endif
+#endif /* PNG_WRITE_FLUSH_SUPPORTED */
+
+ /* It is an error to read while writing a png file */
+ if (png_ptr->read_data_fn != NULL)
+ {
+ png_ptr->read_data_fn = NULL;
+ png_warning(png_ptr,
+ "Attempted to set both read_data_fn and write_data_fn in");
+ png_warning(png_ptr,
+ "the same structure. Resetting read_data_fn to NULL");
+ }
+}
+
+#ifdef USE_FAR_KEYWORD
+#ifdef _MSC_VER
+void *png_far_to_near(png_structp png_ptr, png_voidp ptr, int check)
+{
+ void *near_ptr;
+ void FAR *far_ptr;
+ FP_OFF(near_ptr) = FP_OFF(ptr);
+ far_ptr = (void FAR *)near_ptr;
+
+ if (check != 0)
+ if (FP_SEG(ptr) != FP_SEG(far_ptr))
+ png_error(png_ptr, "segment lost in conversion");
+
+ return(near_ptr);
+}
+# else
+void *png_far_to_near(png_structp png_ptr, png_voidp ptr, int check)
+{
+ void *near_ptr;
+ void FAR *far_ptr;
+ near_ptr = (void FAR *)ptr;
+ far_ptr = (void FAR *)near_ptr;
+
+ if (check != 0)
+ if (far_ptr != ptr)
+ png_error(png_ptr, "segment lost in conversion");
+
+ return(near_ptr);
+}
+# endif
+# endif
+#endif /* PNG_WRITE_SUPPORTED */
diff --git a/src/3rdparty/libpng/pngwrite.c b/src/3rdparty/libpng/pngwrite.c
new file mode 100644
index 0000000..01a7f60
--- /dev/null
+++ b/src/3rdparty/libpng/pngwrite.c
@@ -0,0 +1,1454 @@
+
+/* pngwrite.c - general routines to write a PNG file
+ *
+ * Last changed in libpng 1.4.0 [January 3, 2010]
+ * Copyright (c) 1998-2010 Glenn Randers-Pehrson
+ * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
+ * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ */
+
+/* Get internal access to png.h */
+#define PNG_NO_PEDANTIC_WARNINGS
+#include "png.h"
+#ifdef PNG_WRITE_SUPPORTED
+#include "pngpriv.h"
+
+/* Writes all the PNG information. This is the suggested way to use the
+ * library. If you have a new chunk to add, make a function to write it,
+ * and put it in the correct location here. If you want the chunk written
+ * after the image data, put it in png_write_end(). I strongly encourage
+ * you to supply a PNG_INFO_ flag, and check info_ptr->valid before writing
+ * the chunk, as that will keep the code from breaking if you want to just
+ * write a plain PNG file. If you have long comments, I suggest writing
+ * them in png_write_end(), and compressing them.
+ */
+void PNGAPI
+png_write_info_before_PLTE(png_structp png_ptr, png_infop info_ptr)
+{
+ png_debug(1, "in png_write_info_before_PLTE");
+
+ if (png_ptr == NULL || info_ptr == NULL)
+ return;
+ if (!(png_ptr->mode & PNG_WROTE_INFO_BEFORE_PLTE))
+ {
+ /* Write PNG signature */
+ png_write_sig(png_ptr);
+#ifdef PNG_MNG_FEATURES_SUPPORTED
+ if ((png_ptr->mode&PNG_HAVE_PNG_SIGNATURE)&&(png_ptr->mng_features_permitted))
+ {
+ png_warning(png_ptr, "MNG features are not allowed in a PNG datastream");
+ png_ptr->mng_features_permitted = 0;
+ }
+#endif
+ /* Write IHDR information. */
+ png_write_IHDR(png_ptr, info_ptr->width, info_ptr->height,
+ info_ptr->bit_depth, info_ptr->color_type, info_ptr->compression_type,
+ info_ptr->filter_type,
+#ifdef PNG_WRITE_INTERLACING_SUPPORTED
+ info_ptr->interlace_type);
+#else
+ 0);
+#endif
+ /* The rest of these check to see if the valid field has the appropriate
+ * flag set, and if it does, writes the chunk.
+ */
+#ifdef PNG_WRITE_gAMA_SUPPORTED
+ if (info_ptr->valid & PNG_INFO_gAMA)
+ {
+# ifdef PNG_FLOATING_POINT_SUPPORTED
+ png_write_gAMA(png_ptr, info_ptr->gamma);
+#else
+#ifdef PNG_FIXED_POINT_SUPPORTED
+ png_write_gAMA_fixed(png_ptr, info_ptr->int_gamma);
+# endif
+#endif
+ }
+#endif
+#ifdef PNG_WRITE_sRGB_SUPPORTED
+ if (info_ptr->valid & PNG_INFO_sRGB)
+ png_write_sRGB(png_ptr, (int)info_ptr->srgb_intent);
+#endif
+#ifdef PNG_WRITE_iCCP_SUPPORTED
+ if (info_ptr->valid & PNG_INFO_iCCP)
+ png_write_iCCP(png_ptr, info_ptr->iccp_name, PNG_COMPRESSION_TYPE_BASE,
+ info_ptr->iccp_profile, (int)info_ptr->iccp_proflen);
+#endif
+#ifdef PNG_WRITE_sBIT_SUPPORTED
+ if (info_ptr->valid & PNG_INFO_sBIT)
+ png_write_sBIT(png_ptr, &(info_ptr->sig_bit), info_ptr->color_type);
+#endif
+#ifdef PNG_WRITE_cHRM_SUPPORTED
+ if (info_ptr->valid & PNG_INFO_cHRM)
+ {
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+ png_write_cHRM(png_ptr,
+ info_ptr->x_white, info_ptr->y_white,
+ info_ptr->x_red, info_ptr->y_red,
+ info_ptr->x_green, info_ptr->y_green,
+ info_ptr->x_blue, info_ptr->y_blue);
+#else
+# ifdef PNG_FIXED_POINT_SUPPORTED
+ png_write_cHRM_fixed(png_ptr,
+ info_ptr->int_x_white, info_ptr->int_y_white,
+ info_ptr->int_x_red, info_ptr->int_y_red,
+ info_ptr->int_x_green, info_ptr->int_y_green,
+ info_ptr->int_x_blue, info_ptr->int_y_blue);
+# endif
+#endif
+ }
+#endif
+#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
+ if (info_ptr->unknown_chunks_num)
+ {
+ png_unknown_chunk *up;
+
+ png_debug(5, "writing extra chunks");
+
+ for (up = info_ptr->unknown_chunks;
+ up < info_ptr->unknown_chunks + info_ptr->unknown_chunks_num;
+ up++)
+ {
+ int keep = png_handle_as_unknown(png_ptr, up->name);
+ if (keep != PNG_HANDLE_CHUNK_NEVER &&
+ up->location && !(up->location & PNG_HAVE_PLTE) &&
+ !(up->location & PNG_HAVE_IDAT) &&
+ ((up->name[3] & 0x20) || keep == PNG_HANDLE_CHUNK_ALWAYS ||
+ (png_ptr->flags & PNG_FLAG_KEEP_UNSAFE_CHUNKS)))
+ {
+ if (up->size == 0)
+ png_warning(png_ptr, "Writing zero-length unknown chunk");
+ png_write_chunk(png_ptr, up->name, up->data, up->size);
+ }
+ }
+ }
+#endif
+ png_ptr->mode |= PNG_WROTE_INFO_BEFORE_PLTE;
+ }
+}
+
+void PNGAPI
+png_write_info(png_structp png_ptr, png_infop info_ptr)
+{
+#if defined(PNG_WRITE_TEXT_SUPPORTED) || defined(PNG_WRITE_sPLT_SUPPORTED)
+ int i;
+#endif
+
+ png_debug(1, "in png_write_info");
+
+ if (png_ptr == NULL || info_ptr == NULL)
+ return;
+
+ png_write_info_before_PLTE(png_ptr, info_ptr);
+
+ if (info_ptr->valid & PNG_INFO_PLTE)
+ png_write_PLTE(png_ptr, info_ptr->palette,
+ (png_uint_32)info_ptr->num_palette);
+ else if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
+ png_error(png_ptr, "Valid palette required for paletted images");
+
+#ifdef PNG_WRITE_tRNS_SUPPORTED
+ if (info_ptr->valid & PNG_INFO_tRNS)
+ {
+#ifdef PNG_WRITE_INVERT_ALPHA_SUPPORTED
+ /* Invert the alpha channel (in tRNS) */
+ if ((png_ptr->transformations & PNG_INVERT_ALPHA) &&
+ info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
+ {
+ int j;
+ for (j = 0; j<(int)info_ptr->num_trans; j++)
+ info_ptr->trans_alpha[j] = (png_byte)(255 - info_ptr->trans_alpha[j]);
+ }
+#endif
+ png_write_tRNS(png_ptr, info_ptr->trans_alpha, &(info_ptr->trans_color),
+ info_ptr->num_trans, info_ptr->color_type);
+ }
+#endif
+#ifdef PNG_WRITE_bKGD_SUPPORTED
+ if (info_ptr->valid & PNG_INFO_bKGD)
+ png_write_bKGD(png_ptr, &(info_ptr->background), info_ptr->color_type);
+#endif
+#ifdef PNG_WRITE_hIST_SUPPORTED
+ if (info_ptr->valid & PNG_INFO_hIST)
+ png_write_hIST(png_ptr, info_ptr->hist, info_ptr->num_palette);
+#endif
+#ifdef PNG_WRITE_oFFs_SUPPORTED
+ if (info_ptr->valid & PNG_INFO_oFFs)
+ png_write_oFFs(png_ptr, info_ptr->x_offset, info_ptr->y_offset,
+ info_ptr->offset_unit_type);
+#endif
+#ifdef PNG_WRITE_pCAL_SUPPORTED
+ if (info_ptr->valid & PNG_INFO_pCAL)
+ png_write_pCAL(png_ptr, info_ptr->pcal_purpose, info_ptr->pcal_X0,
+ info_ptr->pcal_X1, info_ptr->pcal_type, info_ptr->pcal_nparams,
+ info_ptr->pcal_units, info_ptr->pcal_params);
+#endif
+
+#ifdef PNG_sCAL_SUPPORTED
+ if (info_ptr->valid & PNG_INFO_sCAL)
+#ifdef PNG_WRITE_sCAL_SUPPORTED
+#if defined(PNG_FLOATING_POINT_SUPPORTED) && defined(PNG_STDIO_SUPPORTED)
+ png_write_sCAL(png_ptr, (int)info_ptr->scal_unit,
+ info_ptr->scal_pixel_width, info_ptr->scal_pixel_height);
+#else /* !FLOATING_POINT */
+#ifdef PNG_FIXED_POINT_SUPPORTED
+ png_write_sCAL_s(png_ptr, (int)info_ptr->scal_unit,
+ info_ptr->scal_s_width, info_ptr->scal_s_height);
+#endif /* FIXED_POINT */
+#endif /* FLOATING_POINT */
+#else /* !WRITE_sCAL */
+ png_warning(png_ptr,
+ "png_write_sCAL not supported; sCAL chunk not written");
+#endif /* WRITE_sCAL */
+#endif /* sCAL */
+
+#ifdef PNG_WRITE_pHYs_SUPPORTED
+ if (info_ptr->valid & PNG_INFO_pHYs)
+ png_write_pHYs(png_ptr, info_ptr->x_pixels_per_unit,
+ info_ptr->y_pixels_per_unit, info_ptr->phys_unit_type);
+#endif /* pHYs */
+
+#ifdef PNG_WRITE_tIME_SUPPORTED
+ if (info_ptr->valid & PNG_INFO_tIME)
+ {
+ png_write_tIME(png_ptr, &(info_ptr->mod_time));
+ png_ptr->mode |= PNG_WROTE_tIME;
+ }
+#endif /* tIME */
+
+#ifdef PNG_WRITE_sPLT_SUPPORTED
+ if (info_ptr->valid & PNG_INFO_sPLT)
+ for (i = 0; i < (int)info_ptr->splt_palettes_num; i++)
+ png_write_sPLT(png_ptr, info_ptr->splt_palettes + i);
+#endif /* sPLT */
+
+#ifdef PNG_WRITE_TEXT_SUPPORTED
+ /* Check to see if we need to write text chunks */
+ for (i = 0; i < info_ptr->num_text; i++)
+ {
+ png_debug2(2, "Writing header text chunk %d, type %d", i,
+ info_ptr->text[i].compression);
+ /* An internationalized chunk? */
+ if (info_ptr->text[i].compression > 0)
+ {
+#ifdef PNG_WRITE_iTXt_SUPPORTED
+ /* Write international chunk */
+ png_write_iTXt(png_ptr,
+ info_ptr->text[i].compression,
+ info_ptr->text[i].key,
+ info_ptr->text[i].lang,
+ info_ptr->text[i].lang_key,
+ info_ptr->text[i].text);
+#else
+ png_warning(png_ptr, "Unable to write international text");
+#endif
+ /* Mark this chunk as written */
+ info_ptr->text[i].compression = PNG_TEXT_COMPRESSION_NONE_WR;
+ }
+ /* If we want a compressed text chunk */
+ else if (info_ptr->text[i].compression == PNG_TEXT_COMPRESSION_zTXt)
+ {
+#ifdef PNG_WRITE_zTXt_SUPPORTED
+ /* Write compressed chunk */
+ png_write_zTXt(png_ptr, info_ptr->text[i].key,
+ info_ptr->text[i].text, 0,
+ info_ptr->text[i].compression);
+#else
+ png_warning(png_ptr, "Unable to write compressed text");
+#endif
+ /* Mark this chunk as written */
+ info_ptr->text[i].compression = PNG_TEXT_COMPRESSION_zTXt_WR;
+ }
+ else if (info_ptr->text[i].compression == PNG_TEXT_COMPRESSION_NONE)
+ {
+#ifdef PNG_WRITE_tEXt_SUPPORTED
+ /* Write uncompressed chunk */
+ png_write_tEXt(png_ptr, info_ptr->text[i].key,
+ info_ptr->text[i].text,
+ 0);
+ /* Mark this chunk as written */
+ info_ptr->text[i].compression = PNG_TEXT_COMPRESSION_NONE_WR;
+#else
+ /* Can't get here */
+ png_warning(png_ptr, "Unable to write uncompressed text");
+#endif
+ }
+ }
+#endif /* tEXt */
+
+#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
+ if (info_ptr->unknown_chunks_num)
+ {
+ png_unknown_chunk *up;
+
+ png_debug(5, "writing extra chunks");
+
+ for (up = info_ptr->unknown_chunks;
+ up < info_ptr->unknown_chunks + info_ptr->unknown_chunks_num;
+ up++)
+ {
+ int keep = png_handle_as_unknown(png_ptr, up->name);
+ if (keep != PNG_HANDLE_CHUNK_NEVER &&
+ up->location && (up->location & PNG_HAVE_PLTE) &&
+ !(up->location & PNG_HAVE_IDAT) &&
+ ((up->name[3] & 0x20) || keep == PNG_HANDLE_CHUNK_ALWAYS ||
+ (png_ptr->flags & PNG_FLAG_KEEP_UNSAFE_CHUNKS)))
+ {
+ png_write_chunk(png_ptr, up->name, up->data, up->size);
+ }
+ }
+ }
+#endif
+}
+
+/* Writes the end of the PNG file. If you don't want to write comments or
+ * time information, you can pass NULL for info. If you already wrote these
+ * in png_write_info(), do not write them again here. If you have long
+ * comments, I suggest writing them here, and compressing them.
+ */
+void PNGAPI
+png_write_end(png_structp png_ptr, png_infop info_ptr)
+{
+ png_debug(1, "in png_write_end");
+
+ if (png_ptr == NULL)
+ return;
+ if (!(png_ptr->mode & PNG_HAVE_IDAT))
+ png_error(png_ptr, "No IDATs written into file");
+
+ /* See if user wants us to write information chunks */
+ if (info_ptr != NULL)
+ {
+#ifdef PNG_WRITE_TEXT_SUPPORTED
+ int i; /* local index variable */
+#endif
+#ifdef PNG_WRITE_tIME_SUPPORTED
+ /* Check to see if user has supplied a time chunk */
+ if ((info_ptr->valid & PNG_INFO_tIME) &&
+ !(png_ptr->mode & PNG_WROTE_tIME))
+ png_write_tIME(png_ptr, &(info_ptr->mod_time));
+#endif
+#ifdef PNG_WRITE_TEXT_SUPPORTED
+ /* Loop through comment chunks */
+ for (i = 0; i < info_ptr->num_text; i++)
+ {
+ png_debug2(2, "Writing trailer text chunk %d, type %d", i,
+ info_ptr->text[i].compression);
+ /* An internationalized chunk? */
+ if (info_ptr->text[i].compression > 0)
+ {
+#ifdef PNG_WRITE_iTXt_SUPPORTED
+ /* Write international chunk */
+ png_write_iTXt(png_ptr,
+ info_ptr->text[i].compression,
+ info_ptr->text[i].key,
+ info_ptr->text[i].lang,
+ info_ptr->text[i].lang_key,
+ info_ptr->text[i].text);
+#else
+ png_warning(png_ptr, "Unable to write international text");
+#endif
+ /* Mark this chunk as written */
+ info_ptr->text[i].compression = PNG_TEXT_COMPRESSION_NONE_WR;
+ }
+ else if (info_ptr->text[i].compression >= PNG_TEXT_COMPRESSION_zTXt)
+ {
+#ifdef PNG_WRITE_zTXt_SUPPORTED
+ /* Write compressed chunk */
+ png_write_zTXt(png_ptr, info_ptr->text[i].key,
+ info_ptr->text[i].text, 0,
+ info_ptr->text[i].compression);
+#else
+ png_warning(png_ptr, "Unable to write compressed text");
+#endif
+ /* Mark this chunk as written */
+ info_ptr->text[i].compression = PNG_TEXT_COMPRESSION_zTXt_WR;
+ }
+ else if (info_ptr->text[i].compression == PNG_TEXT_COMPRESSION_NONE)
+ {
+#ifdef PNG_WRITE_tEXt_SUPPORTED
+ /* Write uncompressed chunk */
+ png_write_tEXt(png_ptr, info_ptr->text[i].key,
+ info_ptr->text[i].text, 0);
+#else
+ png_warning(png_ptr, "Unable to write uncompressed text");
+#endif
+
+ /* Mark this chunk as written */
+ info_ptr->text[i].compression = PNG_TEXT_COMPRESSION_NONE_WR;
+ }
+ }
+#endif
+#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
+ if (info_ptr->unknown_chunks_num)
+ {
+ png_unknown_chunk *up;
+
+ png_debug(5, "writing extra chunks");
+
+ for (up = info_ptr->unknown_chunks;
+ up < info_ptr->unknown_chunks + info_ptr->unknown_chunks_num;
+ up++)
+ {
+ int keep = png_handle_as_unknown(png_ptr, up->name);
+ if (keep != PNG_HANDLE_CHUNK_NEVER &&
+ up->location && (up->location & PNG_AFTER_IDAT) &&
+ ((up->name[3] & 0x20) || keep == PNG_HANDLE_CHUNK_ALWAYS ||
+ (png_ptr->flags & PNG_FLAG_KEEP_UNSAFE_CHUNKS)))
+ {
+ png_write_chunk(png_ptr, up->name, up->data, up->size);
+ }
+ }
+ }
+#endif
+ }
+
+ png_ptr->mode |= PNG_AFTER_IDAT;
+
+ /* Write end of PNG file */
+ png_write_IEND(png_ptr);
+ /* This flush, added in libpng-1.0.8, removed from libpng-1.0.9beta03,
+ * and restored again in libpng-1.2.30, may cause some applications that
+ * do not set png_ptr->output_flush_fn to crash. If your application
+ * experiences a problem, please try building libpng with
+ * PNG_WRITE_FLUSH_AFTER_IEND_SUPPORTED defined, and report the event to
+ * png-mng-implement at lists.sf.net .
+ */
+#ifdef PNG_WRITE_FLUSH_SUPPORTED
+# ifdef PNG_WRITE_FLUSH_AFTER_IEND_SUPPORTED
+ png_flush(png_ptr);
+# endif
+#endif
+}
+
+#ifdef PNG_CONVERT_tIME_SUPPORTED
+/* "tm" structure is not supported on WindowsCE */
+void PNGAPI
+png_convert_from_struct_tm(png_timep ptime, struct tm FAR * ttime)
+{
+ png_debug(1, "in png_convert_from_struct_tm");
+
+ ptime->year = (png_uint_16)(1900 + ttime->tm_year);
+ ptime->month = (png_byte)(ttime->tm_mon + 1);
+ ptime->day = (png_byte)ttime->tm_mday;
+ ptime->hour = (png_byte)ttime->tm_hour;
+ ptime->minute = (png_byte)ttime->tm_min;
+ ptime->second = (png_byte)ttime->tm_sec;
+}
+
+void PNGAPI
+png_convert_from_time_t(png_timep ptime, time_t ttime)
+{
+ struct tm *tbuf;
+
+ png_debug(1, "in png_convert_from_time_t");
+
+ tbuf = gmtime(&ttime);
+ png_convert_from_struct_tm(ptime, tbuf);
+}
+#endif
+
+/* Initialize png_ptr structure, and allocate any memory needed */
+png_structp PNGAPI
+png_create_write_struct(png_const_charp user_png_ver, png_voidp error_ptr,
+ png_error_ptr error_fn, png_error_ptr warn_fn)
+{
+#ifdef PNG_USER_MEM_SUPPORTED
+ return (png_create_write_struct_2(user_png_ver, error_ptr, error_fn,
+ warn_fn, NULL, NULL, NULL));
+}
+
+/* Alternate initialize png_ptr structure, and allocate any memory needed */
+png_structp PNGAPI
+png_create_write_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
+ png_error_ptr error_fn, png_error_ptr warn_fn, png_voidp mem_ptr,
+ png_malloc_ptr malloc_fn, png_free_ptr free_fn)
+{
+#endif /* PNG_USER_MEM_SUPPORTED */
+ volatile int png_cleanup_needed = 0;
+#ifdef PNG_SETJMP_SUPPORTED
+ volatile
+#endif
+ png_structp png_ptr;
+#ifdef PNG_SETJMP_SUPPORTED
+#ifdef USE_FAR_KEYWORD
+ jmp_buf jmpbuf;
+#endif
+#endif
+ int i;
+
+ png_debug(1, "in png_create_write_struct");
+
+#ifdef PNG_USER_MEM_SUPPORTED
+ png_ptr = (png_structp)png_create_struct_2(PNG_STRUCT_PNG,
+ (png_malloc_ptr)malloc_fn, (png_voidp)mem_ptr);
+#else
+ png_ptr = (png_structp)png_create_struct(PNG_STRUCT_PNG);
+#endif /* PNG_USER_MEM_SUPPORTED */
+ if (png_ptr == NULL)
+ return (NULL);
+
+ /* Added at libpng-1.2.6 */
+#ifdef PNG_SET_USER_LIMITS_SUPPORTED
+ png_ptr->user_width_max = PNG_USER_WIDTH_MAX;
+ png_ptr->user_height_max = PNG_USER_HEIGHT_MAX;
+#endif
+
+#ifdef PNG_SETJMP_SUPPORTED
+/* Applications that neglect to set up their own setjmp() and then
+ encounter a png_error() will longjmp here. Since the jmpbuf is
+ then meaningless we abort instead of returning. */
+#ifdef USE_FAR_KEYWORD
+ if (setjmp(jmpbuf))
+#else
+ if (setjmp(png_jmpbuf(png_ptr))) /* sets longjmp to match setjmp */
+#endif
+#ifdef USE_FAR_KEYWORD
+ png_memcpy(png_jmpbuf(png_ptr), jmpbuf, png_sizeof(jmp_buf));
+#endif
+ PNG_ABORT();
+#endif
+
+#ifdef PNG_USER_MEM_SUPPORTED
+ png_set_mem_fn(png_ptr, mem_ptr, malloc_fn, free_fn);
+#endif /* PNG_USER_MEM_SUPPORTED */
+ png_set_error_fn(png_ptr, error_ptr, error_fn, warn_fn);
+
+ if (user_png_ver)
+ {
+ i = 0;
+ do
+ {
+ if (user_png_ver[i] != png_libpng_ver[i])
+ png_ptr->flags |= PNG_FLAG_LIBRARY_MISMATCH;
+ } while (png_libpng_ver[i++]);
+ }
+
+ if (png_ptr->flags & PNG_FLAG_LIBRARY_MISMATCH)
+ {
+ /* Libpng 0.90 and later are binary incompatible with libpng 0.89, so
+ * we must recompile any applications that use any older library version.
+ * For versions after libpng 1.0, we will be compatible, so we need
+ * only check the first digit.
+ */
+ if (user_png_ver == NULL || user_png_ver[0] != png_libpng_ver[0] ||
+ (user_png_ver[0] == '1' && user_png_ver[2] != png_libpng_ver[2]) ||
+ (user_png_ver[0] == '0' && user_png_ver[2] < '9'))
+ {
+#ifdef PNG_STDIO_SUPPORTED
+ char msg[80];
+ if (user_png_ver)
+ {
+ png_snprintf(msg, 80,
+ "Application was compiled with png.h from libpng-%.20s",
+ user_png_ver);
+ png_warning(png_ptr, msg);
+ }
+ png_snprintf(msg, 80,
+ "Application is running with png.c from libpng-%.20s",
+ png_libpng_ver);
+ png_warning(png_ptr, msg);
+#endif
+#ifdef PNG_ERROR_NUMBERS_SUPPORTED
+ png_ptr->flags = 0;
+#endif
+ png_warning(png_ptr,
+ "Incompatible libpng version in application and library");
+ png_cleanup_needed = 1;
+ }
+ }
+
+ /* Initialize zbuf - compression buffer */
+ png_ptr->zbuf_size = PNG_ZBUF_SIZE;
+ if (!png_cleanup_needed)
+ {
+ png_ptr->zbuf = (png_bytep)png_malloc_warn(png_ptr,
+ png_ptr->zbuf_size);
+ if (png_ptr->zbuf == NULL)
+ png_cleanup_needed = 1;
+ }
+ if (png_cleanup_needed)
+ {
+ /* Clean up PNG structure and deallocate any memory. */
+ png_free(png_ptr, png_ptr->zbuf);
+ png_ptr->zbuf = NULL;
+#ifdef PNG_USER_MEM_SUPPORTED
+ png_destroy_struct_2((png_voidp)png_ptr,
+ (png_free_ptr)free_fn, (png_voidp)mem_ptr);
+#else
+ png_destroy_struct((png_voidp)png_ptr);
+#endif
+ return (NULL);
+ }
+
+ png_set_write_fn(png_ptr, NULL, NULL, NULL);
+
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
+ png_set_filter_heuristics(png_ptr, PNG_FILTER_HEURISTIC_DEFAULT,
+ 1, NULL, NULL);
+#endif
+
+ return (png_ptr);
+}
+
+
+/* Write a few rows of image data. If the image is interlaced,
+ * either you will have to write the 7 sub images, or, if you
+ * have called png_set_interlace_handling(), you will have to
+ * "write" the image seven times.
+ */
+void PNGAPI
+png_write_rows(png_structp png_ptr, png_bytepp row,
+ png_uint_32 num_rows)
+{
+ png_uint_32 i; /* row counter */
+ png_bytepp rp; /* row pointer */
+
+ png_debug(1, "in png_write_rows");
+
+ if (png_ptr == NULL)
+ return;
+
+ /* Loop through the rows */
+ for (i = 0, rp = row; i < num_rows; i++, rp++)
+ {
+ png_write_row(png_ptr, *rp);
+ }
+}
+
+/* Write the image. You only need to call this function once, even
+ * if you are writing an interlaced image.
+ */
+void PNGAPI
+png_write_image(png_structp png_ptr, png_bytepp image)
+{
+ png_uint_32 i; /* row index */
+ int pass, num_pass; /* pass variables */
+ png_bytepp rp; /* points to current row */
+
+ if (png_ptr == NULL)
+ return;
+
+ png_debug(1, "in png_write_image");
+
+#ifdef PNG_WRITE_INTERLACING_SUPPORTED
+ /* Initialize interlace handling. If image is not interlaced,
+ * this will set pass to 1
+ */
+ num_pass = png_set_interlace_handling(png_ptr);
+#else
+ num_pass = 1;
+#endif
+ /* Loop through passes */
+ for (pass = 0; pass < num_pass; pass++)
+ {
+ /* Loop through image */
+ for (i = 0, rp = image; i < png_ptr->height; i++, rp++)
+ {
+ png_write_row(png_ptr, *rp);
+ }
+ }
+}
+
+/* Called by user to write a row of image data */
+void PNGAPI
+png_write_row(png_structp png_ptr, png_bytep row)
+{
+ if (png_ptr == NULL)
+ return;
+
+ png_debug2(1, "in png_write_row (row %ld, pass %d)",
+ png_ptr->row_number, png_ptr->pass);
+
+ /* Initialize transformations and other stuff if first time */
+ if (png_ptr->row_number == 0 && png_ptr->pass == 0)
+ {
+ /* Make sure we wrote the header info */
+ if (!(png_ptr->mode & PNG_WROTE_INFO_BEFORE_PLTE))
+ png_error(png_ptr,
+ "png_write_info was never called before png_write_row");
+
+ /* Check for transforms that have been set but were defined out */
+#if !defined(PNG_WRITE_INVERT_SUPPORTED) && defined(PNG_READ_INVERT_SUPPORTED)
+ if (png_ptr->transformations & PNG_INVERT_MONO)
+ png_warning(png_ptr, "PNG_WRITE_INVERT_SUPPORTED is not defined");
+#endif
+#if !defined(PNG_WRITE_FILLER_SUPPORTED) && defined(PNG_READ_FILLER_SUPPORTED)
+ if (png_ptr->transformations & PNG_FILLER)
+ png_warning(png_ptr, "PNG_WRITE_FILLER_SUPPORTED is not defined");
+#endif
+#if !defined(PNG_WRITE_PACKSWAP_SUPPORTED) && defined(PNG_READ_PACKSWAP_SUPPORTED)
+ if (png_ptr->transformations & PNG_PACKSWAP)
+ png_warning(png_ptr, "PNG_WRITE_PACKSWAP_SUPPORTED is not defined");
+#endif
+#if !defined(PNG_WRITE_PACK_SUPPORTED) && defined(PNG_READ_PACK_SUPPORTED)
+ if (png_ptr->transformations & PNG_PACK)
+ png_warning(png_ptr, "PNG_WRITE_PACK_SUPPORTED is not defined");
+#endif
+#if !defined(PNG_WRITE_SHIFT_SUPPORTED) && defined(PNG_READ_SHIFT_SUPPORTED)
+ if (png_ptr->transformations & PNG_SHIFT)
+ png_warning(png_ptr, "PNG_WRITE_SHIFT_SUPPORTED is not defined");
+#endif
+#if !defined(PNG_WRITE_BGR_SUPPORTED) && defined(PNG_READ_BGR_SUPPORTED)
+ if (png_ptr->transformations & PNG_BGR)
+ png_warning(png_ptr, "PNG_WRITE_BGR_SUPPORTED is not defined");
+#endif
+#if !defined(PNG_WRITE_SWAP_SUPPORTED) && defined(PNG_READ_SWAP_SUPPORTED)
+ if (png_ptr->transformations & PNG_SWAP_BYTES)
+ png_warning(png_ptr, "PNG_WRITE_SWAP_SUPPORTED is not defined");
+#endif
+
+ png_write_start_row(png_ptr);
+ }
+
+#ifdef PNG_WRITE_INTERLACING_SUPPORTED
+ /* If interlaced and not interested in row, return */
+ if (png_ptr->interlaced && (png_ptr->transformations & PNG_INTERLACE))
+ {
+ switch (png_ptr->pass)
+ {
+ case 0:
+ if (png_ptr->row_number & 0x07)
+ {
+ png_write_finish_row(png_ptr);
+ return;
+ }
+ break;
+ case 1:
+ if ((png_ptr->row_number & 0x07) || png_ptr->width < 5)
+ {
+ png_write_finish_row(png_ptr);
+ return;
+ }
+ break;
+ case 2:
+ if ((png_ptr->row_number & 0x07) != 4)
+ {
+ png_write_finish_row(png_ptr);
+ return;
+ }
+ break;
+ case 3:
+ if ((png_ptr->row_number & 0x03) || png_ptr->width < 3)
+ {
+ png_write_finish_row(png_ptr);
+ return;
+ }
+ break;
+ case 4:
+ if ((png_ptr->row_number & 0x03) != 2)
+ {
+ png_write_finish_row(png_ptr);
+ return;
+ }
+ break;
+ case 5:
+ if ((png_ptr->row_number & 0x01) || png_ptr->width < 2)
+ {
+ png_write_finish_row(png_ptr);
+ return;
+ }
+ break;
+ case 6:
+ if (!(png_ptr->row_number & 0x01))
+ {
+ png_write_finish_row(png_ptr);
+ return;
+ }
+ break;
+ }
+ }
+#endif
+
+ /* Set up row info for transformations */
+ png_ptr->row_info.color_type = png_ptr->color_type;
+ png_ptr->row_info.width = png_ptr->usr_width;
+ png_ptr->row_info.channels = png_ptr->usr_channels;
+ png_ptr->row_info.bit_depth = png_ptr->usr_bit_depth;
+ png_ptr->row_info.pixel_depth = (png_byte)(png_ptr->row_info.bit_depth *
+ png_ptr->row_info.channels);
+
+ png_ptr->row_info.rowbytes = PNG_ROWBYTES(png_ptr->row_info.pixel_depth,
+ png_ptr->row_info.width);
+
+ png_debug1(3, "row_info->color_type = %d", png_ptr->row_info.color_type);
+ png_debug1(3, "row_info->width = %lu", png_ptr->row_info.width);
+ png_debug1(3, "row_info->channels = %d", png_ptr->row_info.channels);
+ png_debug1(3, "row_info->bit_depth = %d", png_ptr->row_info.bit_depth);
+ png_debug1(3, "row_info->pixel_depth = %d", png_ptr->row_info.pixel_depth);
+ png_debug1(3, "row_info->rowbytes = %lu", png_ptr->row_info.rowbytes);
+
+ /* Copy user's row into buffer, leaving room for filter byte. */
+ png_memcpy(png_ptr->row_buf + 1, row, png_ptr->row_info.rowbytes);
+
+#ifdef PNG_WRITE_INTERLACING_SUPPORTED
+ /* Handle interlacing */
+ if (png_ptr->interlaced && png_ptr->pass < 6 &&
+ (png_ptr->transformations & PNG_INTERLACE))
+ {
+ png_do_write_interlace(&(png_ptr->row_info),
+ png_ptr->row_buf + 1, png_ptr->pass);
+ /* This should always get caught above, but still ... */
+ if (!(png_ptr->row_info.width))
+ {
+ png_write_finish_row(png_ptr);
+ return;
+ }
+ }
+#endif
+
+ /* Handle other transformations */
+ if (png_ptr->transformations)
+ png_do_write_transformations(png_ptr);
+
+#ifdef PNG_MNG_FEATURES_SUPPORTED
+ /* Write filter_method 64 (intrapixel differencing) only if
+ * 1. Libpng was compiled with PNG_MNG_FEATURES_SUPPORTED and
+ * 2. Libpng did not write a PNG signature (this filter_method is only
+ * used in PNG datastreams that are embedded in MNG datastreams) and
+ * 3. The application called png_permit_mng_features with a mask that
+ * included PNG_FLAG_MNG_FILTER_64 and
+ * 4. The filter_method is 64 and
+ * 5. The color_type is RGB or RGBA
+ */
+ if ((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) &&
+ (png_ptr->filter_type == PNG_INTRAPIXEL_DIFFERENCING))
+ {
+ /* Intrapixel differencing */
+ png_do_write_intrapixel(&(png_ptr->row_info), png_ptr->row_buf + 1);
+ }
+#endif
+
+ /* Find a filter if necessary, filter the row and write it out. */
+ png_write_find_filter(png_ptr, &(png_ptr->row_info));
+
+ if (png_ptr->write_row_fn != NULL)
+ (*(png_ptr->write_row_fn))(png_ptr, png_ptr->row_number, png_ptr->pass);
+}
+
+#ifdef PNG_WRITE_FLUSH_SUPPORTED
+/* Set the automatic flush interval or 0 to turn flushing off */
+void PNGAPI
+png_set_flush(png_structp png_ptr, int nrows)
+{
+ png_debug(1, "in png_set_flush");
+
+ if (png_ptr == NULL)
+ return;
+ png_ptr->flush_dist = (nrows < 0 ? 0 : nrows);
+}
+
+/* Flush the current output buffers now */
+void PNGAPI
+png_write_flush(png_structp png_ptr)
+{
+ int wrote_IDAT;
+
+ png_debug(1, "in png_write_flush");
+
+ if (png_ptr == NULL)
+ return;
+ /* We have already written out all of the data */
+ if (png_ptr->row_number >= png_ptr->num_rows)
+ return;
+
+ do
+ {
+ int ret;
+
+ /* Compress the data */
+ ret = deflate(&png_ptr->zstream, Z_SYNC_FLUSH);
+ wrote_IDAT = 0;
+
+ /* Check for compression errors */
+ if (ret != Z_OK)
+ {
+ if (png_ptr->zstream.msg != NULL)
+ png_error(png_ptr, png_ptr->zstream.msg);
+ else
+ png_error(png_ptr, "zlib error");
+ }
+
+ if (!(png_ptr->zstream.avail_out))
+ {
+ /* Write the IDAT and reset the zlib output buffer */
+ png_write_IDAT(png_ptr, png_ptr->zbuf,
+ png_ptr->zbuf_size);
+ png_ptr->zstream.next_out = png_ptr->zbuf;
+ png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size;
+ wrote_IDAT = 1;
+ }
+ } while(wrote_IDAT == 1);
+
+ /* If there is any data left to be output, write it into a new IDAT */
+ if (png_ptr->zbuf_size != png_ptr->zstream.avail_out)
+ {
+ /* Write the IDAT and reset the zlib output buffer */
+ png_write_IDAT(png_ptr, png_ptr->zbuf,
+ png_ptr->zbuf_size - png_ptr->zstream.avail_out);
+ png_ptr->zstream.next_out = png_ptr->zbuf;
+ png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size;
+ }
+ png_ptr->flush_rows = 0;
+ png_flush(png_ptr);
+}
+#endif /* PNG_WRITE_FLUSH_SUPPORTED */
+
+/* Free all memory used by the write */
+void PNGAPI
+png_destroy_write_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr)
+{
+ png_structp png_ptr = NULL;
+ png_infop info_ptr = NULL;
+#ifdef PNG_USER_MEM_SUPPORTED
+ png_free_ptr free_fn = NULL;
+ png_voidp mem_ptr = NULL;
+#endif
+
+ png_debug(1, "in png_destroy_write_struct");
+
+ if (png_ptr_ptr != NULL)
+ {
+ png_ptr = *png_ptr_ptr;
+#ifdef PNG_USER_MEM_SUPPORTED
+ free_fn = png_ptr->free_fn;
+ mem_ptr = png_ptr->mem_ptr;
+#endif
+ }
+
+#ifdef PNG_USER_MEM_SUPPORTED
+ if (png_ptr != NULL)
+ {
+ free_fn = png_ptr->free_fn;
+ mem_ptr = png_ptr->mem_ptr;
+ }
+#endif
+
+ if (info_ptr_ptr != NULL)
+ info_ptr = *info_ptr_ptr;
+
+ if (info_ptr != NULL)
+ {
+ if (png_ptr != NULL)
+ {
+ png_free_data(png_ptr, info_ptr, PNG_FREE_ALL, -1);
+
+#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
+ if (png_ptr->num_chunk_list)
+ {
+ png_free(png_ptr, png_ptr->chunk_list);
+ png_ptr->num_chunk_list = 0;
+ }
+#endif
+ }
+
+#ifdef PNG_USER_MEM_SUPPORTED
+ png_destroy_struct_2((png_voidp)info_ptr, (png_free_ptr)free_fn,
+ (png_voidp)mem_ptr);
+#else
+ png_destroy_struct((png_voidp)info_ptr);
+#endif
+ *info_ptr_ptr = NULL;
+ }
+
+ if (png_ptr != NULL)
+ {
+ png_write_destroy(png_ptr);
+#ifdef PNG_USER_MEM_SUPPORTED
+ png_destroy_struct_2((png_voidp)png_ptr, (png_free_ptr)free_fn,
+ (png_voidp)mem_ptr);
+#else
+ png_destroy_struct((png_voidp)png_ptr);
+#endif
+ *png_ptr_ptr = NULL;
+ }
+}
+
+
+/* Free any memory used in png_ptr struct (old method) */
+void /* PRIVATE */
+png_write_destroy(png_structp png_ptr)
+{
+#ifdef PNG_SETJMP_SUPPORTED
+ jmp_buf tmp_jmp; /* Save jump buffer */
+#endif
+ png_error_ptr error_fn;
+ png_error_ptr warning_fn;
+ png_voidp error_ptr;
+#ifdef PNG_USER_MEM_SUPPORTED
+ png_free_ptr free_fn;
+#endif
+
+ png_debug(1, "in png_write_destroy");
+
+ /* Free any memory zlib uses */
+ deflateEnd(&png_ptr->zstream);
+
+ /* Free our memory. png_free checks NULL for us. */
+ png_free(png_ptr, png_ptr->zbuf);
+ png_free(png_ptr, png_ptr->row_buf);
+#ifdef PNG_WRITE_FILTER_SUPPORTED
+ png_free(png_ptr, png_ptr->prev_row);
+ png_free(png_ptr, png_ptr->sub_row);
+ png_free(png_ptr, png_ptr->up_row);
+ png_free(png_ptr, png_ptr->avg_row);
+ png_free(png_ptr, png_ptr->paeth_row);
+#endif
+
+#ifdef PNG_TIME_RFC1123_SUPPORTED
+ png_free(png_ptr, png_ptr->time_buffer);
+#endif
+
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
+ png_free(png_ptr, png_ptr->prev_filters);
+ png_free(png_ptr, png_ptr->filter_weights);
+ png_free(png_ptr, png_ptr->inv_filter_weights);
+ png_free(png_ptr, png_ptr->filter_costs);
+ png_free(png_ptr, png_ptr->inv_filter_costs);
+#endif
+
+#ifdef PNG_SETJMP_SUPPORTED
+ /* Reset structure */
+ png_memcpy(tmp_jmp, png_ptr->jmpbuf, png_sizeof(jmp_buf));
+#endif
+
+ error_fn = png_ptr->error_fn;
+ warning_fn = png_ptr->warning_fn;
+ error_ptr = png_ptr->error_ptr;
+#ifdef PNG_USER_MEM_SUPPORTED
+ free_fn = png_ptr->free_fn;
+#endif
+
+ png_memset(png_ptr, 0, png_sizeof(png_struct));
+
+ png_ptr->error_fn = error_fn;
+ png_ptr->warning_fn = warning_fn;
+ png_ptr->error_ptr = error_ptr;
+#ifdef PNG_USER_MEM_SUPPORTED
+ png_ptr->free_fn = free_fn;
+#endif
+
+#ifdef PNG_SETJMP_SUPPORTED
+ png_memcpy(png_ptr->jmpbuf, tmp_jmp, png_sizeof(jmp_buf));
+#endif
+}
+
+/* Allow the application to select one or more row filters to use. */
+void PNGAPI
+png_set_filter(png_structp png_ptr, int method, int filters)
+{
+ png_debug(1, "in png_set_filter");
+
+ if (png_ptr == NULL)
+ return;
+#ifdef PNG_MNG_FEATURES_SUPPORTED
+ if ((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) &&
+ (method == PNG_INTRAPIXEL_DIFFERENCING))
+ method = PNG_FILTER_TYPE_BASE;
+#endif
+ if (method == PNG_FILTER_TYPE_BASE)
+ {
+ switch (filters & (PNG_ALL_FILTERS | 0x07))
+ {
+#ifdef PNG_WRITE_FILTER_SUPPORTED
+ case 5:
+ case 6:
+ case 7: png_warning(png_ptr, "Unknown row filter for method 0");
+#endif /* PNG_WRITE_FILTER_SUPPORTED */
+ case PNG_FILTER_VALUE_NONE:
+ png_ptr->do_filter = PNG_FILTER_NONE; break;
+#ifdef PNG_WRITE_FILTER_SUPPORTED
+ case PNG_FILTER_VALUE_SUB:
+ png_ptr->do_filter = PNG_FILTER_SUB; break;
+ case PNG_FILTER_VALUE_UP:
+ png_ptr->do_filter = PNG_FILTER_UP; break;
+ case PNG_FILTER_VALUE_AVG:
+ png_ptr->do_filter = PNG_FILTER_AVG; break;
+ case PNG_FILTER_VALUE_PAETH:
+ png_ptr->do_filter = PNG_FILTER_PAETH; break;
+ default: png_ptr->do_filter = (png_byte)filters; break;
+#else
+ default: png_warning(png_ptr, "Unknown row filter for method 0");
+#endif /* PNG_WRITE_FILTER_SUPPORTED */
+ }
+
+ /* If we have allocated the row_buf, this means we have already started
+ * with the image and we should have allocated all of the filter buffers
+ * that have been selected. If prev_row isn't already allocated, then
+ * it is too late to start using the filters that need it, since we
+ * will be missing the data in the previous row. If an application
+ * wants to start and stop using particular filters during compression,
+ * it should start out with all of the filters, and then add and
+ * remove them after the start of compression.
+ */
+ if (png_ptr->row_buf != NULL)
+ {
+#ifdef PNG_WRITE_FILTER_SUPPORTED
+ if ((png_ptr->do_filter & PNG_FILTER_SUB) && png_ptr->sub_row == NULL)
+ {
+ png_ptr->sub_row = (png_bytep)png_malloc(png_ptr,
+ (png_ptr->rowbytes + 1));
+ png_ptr->sub_row[0] = PNG_FILTER_VALUE_SUB;
+ }
+
+ if ((png_ptr->do_filter & PNG_FILTER_UP) && png_ptr->up_row == NULL)
+ {
+ if (png_ptr->prev_row == NULL)
+ {
+ png_warning(png_ptr, "Can't add Up filter after starting");
+ png_ptr->do_filter &= ~PNG_FILTER_UP;
+ }
+ else
+ {
+ png_ptr->up_row = (png_bytep)png_malloc(png_ptr,
+ (png_ptr->rowbytes + 1));
+ png_ptr->up_row[0] = PNG_FILTER_VALUE_UP;
+ }
+ }
+
+ if ((png_ptr->do_filter & PNG_FILTER_AVG) && png_ptr->avg_row == NULL)
+ {
+ if (png_ptr->prev_row == NULL)
+ {
+ png_warning(png_ptr, "Can't add Average filter after starting");
+ png_ptr->do_filter &= ~PNG_FILTER_AVG;
+ }
+ else
+ {
+ png_ptr->avg_row = (png_bytep)png_malloc(png_ptr,
+ (png_ptr->rowbytes + 1));
+ png_ptr->avg_row[0] = PNG_FILTER_VALUE_AVG;
+ }
+ }
+
+ if ((png_ptr->do_filter & PNG_FILTER_PAETH) &&
+ png_ptr->paeth_row == NULL)
+ {
+ if (png_ptr->prev_row == NULL)
+ {
+ png_warning(png_ptr, "Can't add Paeth filter after starting");
+ png_ptr->do_filter &= (png_byte)(~PNG_FILTER_PAETH);
+ }
+ else
+ {
+ png_ptr->paeth_row = (png_bytep)png_malloc(png_ptr,
+ (png_ptr->rowbytes + 1));
+ png_ptr->paeth_row[0] = PNG_FILTER_VALUE_PAETH;
+ }
+ }
+
+ if (png_ptr->do_filter == PNG_NO_FILTERS)
+#endif /* PNG_WRITE_FILTER_SUPPORTED */
+ png_ptr->do_filter = PNG_FILTER_NONE;
+ }
+ }
+ else
+ png_error(png_ptr, "Unknown custom filter method");
+}
+
+/* This allows us to influence the way in which libpng chooses the "best"
+ * filter for the current scanline. While the "minimum-sum-of-absolute-
+ * differences metric is relatively fast and effective, there is some
+ * question as to whether it can be improved upon by trying to keep the
+ * filtered data going to zlib more consistent, hopefully resulting in
+ * better compression.
+ */
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED /* GRR 970116 */
+void PNGAPI
+png_set_filter_heuristics(png_structp png_ptr, int heuristic_method,
+ int num_weights, png_doublep filter_weights,
+ png_doublep filter_costs)
+{
+ int i;
+
+ png_debug(1, "in png_set_filter_heuristics");
+
+ if (png_ptr == NULL)
+ return;
+ if (heuristic_method >= PNG_FILTER_HEURISTIC_LAST)
+ {
+ png_warning(png_ptr, "Unknown filter heuristic method");
+ return;
+ }
+
+ if (heuristic_method == PNG_FILTER_HEURISTIC_DEFAULT)
+ {
+ heuristic_method = PNG_FILTER_HEURISTIC_UNWEIGHTED;
+ }
+
+ if (num_weights < 0 || filter_weights == NULL ||
+ heuristic_method == PNG_FILTER_HEURISTIC_UNWEIGHTED)
+ {
+ num_weights = 0;
+ }
+
+ png_ptr->num_prev_filters = (png_byte)num_weights;
+ png_ptr->heuristic_method = (png_byte)heuristic_method;
+
+ if (num_weights > 0)
+ {
+ if (png_ptr->prev_filters == NULL)
+ {
+ png_ptr->prev_filters = (png_bytep)png_malloc(png_ptr,
+ (png_uint_32)(png_sizeof(png_byte) * num_weights));
+
+ /* To make sure that the weighting starts out fairly */
+ for (i = 0; i < num_weights; i++)
+ {
+ png_ptr->prev_filters[i] = 255;
+ }
+ }
+
+ if (png_ptr->filter_weights == NULL)
+ {
+ png_ptr->filter_weights = (png_uint_16p)png_malloc(png_ptr,
+ (png_uint_32)(png_sizeof(png_uint_16) * num_weights));
+
+ png_ptr->inv_filter_weights = (png_uint_16p)png_malloc(png_ptr,
+ (png_uint_32)(png_sizeof(png_uint_16) * num_weights));
+ for (i = 0; i < num_weights; i++)
+ {
+ png_ptr->inv_filter_weights[i] =
+ png_ptr->filter_weights[i] = PNG_WEIGHT_FACTOR;
+ }
+ }
+
+ for (i = 0; i < num_weights; i++)
+ {
+ if (filter_weights[i] < 0.0)
+ {
+ png_ptr->inv_filter_weights[i] =
+ png_ptr->filter_weights[i] = PNG_WEIGHT_FACTOR;
+ }
+ else
+ {
+ png_ptr->inv_filter_weights[i] =
+ (png_uint_16)((double)PNG_WEIGHT_FACTOR*filter_weights[i]+0.5);
+ png_ptr->filter_weights[i] =
+ (png_uint_16)((double)PNG_WEIGHT_FACTOR/filter_weights[i]+0.5);
+ }
+ }
+ }
+
+ /* If, in the future, there are other filter methods, this would
+ * need to be based on png_ptr->filter.
+ */
+ if (png_ptr->filter_costs == NULL)
+ {
+ png_ptr->filter_costs = (png_uint_16p)png_malloc(png_ptr,
+ (png_uint_32)(png_sizeof(png_uint_16) * PNG_FILTER_VALUE_LAST));
+
+ png_ptr->inv_filter_costs = (png_uint_16p)png_malloc(png_ptr,
+ (png_uint_32)(png_sizeof(png_uint_16) * PNG_FILTER_VALUE_LAST));
+
+ for (i = 0; i < PNG_FILTER_VALUE_LAST; i++)
+ {
+ png_ptr->inv_filter_costs[i] =
+ png_ptr->filter_costs[i] = PNG_COST_FACTOR;
+ }
+ }
+
+ /* Here is where we set the relative costs of the different filters. We
+ * should take the desired compression level into account when setting
+ * the costs, so that Paeth, for instance, has a high relative cost at low
+ * compression levels, while it has a lower relative cost at higher
+ * compression settings. The filter types are in order of increasing
+ * relative cost, so it would be possible to do this with an algorithm.
+ */
+ for (i = 0; i < PNG_FILTER_VALUE_LAST; i++)
+ {
+ if (filter_costs == NULL || filter_costs[i] < 0.0)
+ {
+ png_ptr->inv_filter_costs[i] =
+ png_ptr->filter_costs[i] = PNG_COST_FACTOR;
+ }
+ else if (filter_costs[i] >= 1.0)
+ {
+ png_ptr->inv_filter_costs[i] =
+ (png_uint_16)((double)PNG_COST_FACTOR / filter_costs[i] + 0.5);
+ png_ptr->filter_costs[i] =
+ (png_uint_16)((double)PNG_COST_FACTOR * filter_costs[i] + 0.5);
+ }
+ }
+}
+#endif /* PNG_WRITE_WEIGHTED_FILTER_SUPPORTED */
+
+void PNGAPI
+png_set_compression_level(png_structp png_ptr, int level)
+{
+ png_debug(1, "in png_set_compression_level");
+
+ if (png_ptr == NULL)
+ return;
+ png_ptr->flags |= PNG_FLAG_ZLIB_CUSTOM_LEVEL;
+ png_ptr->zlib_level = level;
+}
+
+void PNGAPI
+png_set_compression_mem_level(png_structp png_ptr, int mem_level)
+{
+ png_debug(1, "in png_set_compression_mem_level");
+
+ if (png_ptr == NULL)
+ return;
+ png_ptr->flags |= PNG_FLAG_ZLIB_CUSTOM_MEM_LEVEL;
+ png_ptr->zlib_mem_level = mem_level;
+}
+
+void PNGAPI
+png_set_compression_strategy(png_structp png_ptr, int strategy)
+{
+ png_debug(1, "in png_set_compression_strategy");
+
+ if (png_ptr == NULL)
+ return;
+ png_ptr->flags |= PNG_FLAG_ZLIB_CUSTOM_STRATEGY;
+ png_ptr->zlib_strategy = strategy;
+}
+
+void PNGAPI
+png_set_compression_window_bits(png_structp png_ptr, int window_bits)
+{
+ if (png_ptr == NULL)
+ return;
+ if (window_bits > 15)
+ png_warning(png_ptr, "Only compression windows <= 32k supported by PNG");
+ else if (window_bits < 8)
+ png_warning(png_ptr, "Only compression windows >= 256 supported by PNG");
+#ifndef WBITS_8_OK
+ /* Avoid libpng bug with 256-byte windows */
+ if (window_bits == 8)
+ {
+ png_warning(png_ptr, "Compression window is being reset to 512");
+ window_bits = 9;
+ }
+#endif
+ png_ptr->flags |= PNG_FLAG_ZLIB_CUSTOM_WINDOW_BITS;
+ png_ptr->zlib_window_bits = window_bits;
+}
+
+void PNGAPI
+png_set_compression_method(png_structp png_ptr, int method)
+{
+ png_debug(1, "in png_set_compression_method");
+
+ if (png_ptr == NULL)
+ return;
+ if (method != 8)
+ png_warning(png_ptr, "Only compression method 8 is supported by PNG");
+ png_ptr->flags |= PNG_FLAG_ZLIB_CUSTOM_METHOD;
+ png_ptr->zlib_method = method;
+}
+
+void PNGAPI
+png_set_write_status_fn(png_structp png_ptr, png_write_status_ptr write_row_fn)
+{
+ if (png_ptr == NULL)
+ return;
+ png_ptr->write_row_fn = write_row_fn;
+}
+
+#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
+void PNGAPI
+png_set_write_user_transform_fn(png_structp png_ptr, png_user_transform_ptr
+ write_user_transform_fn)
+{
+ png_debug(1, "in png_set_write_user_transform_fn");
+
+ if (png_ptr == NULL)
+ return;
+ png_ptr->transformations |= PNG_USER_TRANSFORM;
+ png_ptr->write_user_transform_fn = write_user_transform_fn;
+}
+#endif
+
+
+#ifdef PNG_INFO_IMAGE_SUPPORTED
+void PNGAPI
+png_write_png(png_structp png_ptr, png_infop info_ptr,
+ int transforms, voidp params)
+{
+ if (png_ptr == NULL || info_ptr == NULL)
+ return;
+
+ /* Write the file header information. */
+ png_write_info(png_ptr, info_ptr);
+
+ /* ------ these transformations don't touch the info structure ------- */
+
+#ifdef PNG_WRITE_INVERT_SUPPORTED
+ /* Invert monochrome pixels */
+ if (transforms & PNG_TRANSFORM_INVERT_MONO)
+ png_set_invert_mono(png_ptr);
+#endif
+
+#ifdef PNG_WRITE_SHIFT_SUPPORTED
+ /* Shift the pixels up to a legal bit depth and fill in
+ * as appropriate to correctly scale the image.
+ */
+ if ((transforms & PNG_TRANSFORM_SHIFT)
+ && (info_ptr->valid & PNG_INFO_sBIT))
+ png_set_shift(png_ptr, &info_ptr->sig_bit);
+#endif
+
+#ifdef PNG_WRITE_PACK_SUPPORTED
+ /* Pack pixels into bytes */
+ if (transforms & PNG_TRANSFORM_PACKING)
+ png_set_packing(png_ptr);
+#endif
+
+#ifdef PNG_WRITE_SWAP_ALPHA_SUPPORTED
+ /* Swap location of alpha bytes from ARGB to RGBA */
+ if (transforms & PNG_TRANSFORM_SWAP_ALPHA)
+ png_set_swap_alpha(png_ptr);
+#endif
+
+#ifdef PNG_WRITE_FILLER_SUPPORTED
+ /* Pack XRGB/RGBX/ARGB/RGBA into * RGB (4 channels -> 3 channels) */
+ if (transforms & PNG_TRANSFORM_STRIP_FILLER_AFTER)
+ png_set_filler(png_ptr, 0, PNG_FILLER_AFTER);
+ else if (transforms & PNG_TRANSFORM_STRIP_FILLER_BEFORE)
+ png_set_filler(png_ptr, 0, PNG_FILLER_BEFORE);
+#endif
+
+#ifdef PNG_WRITE_BGR_SUPPORTED
+ /* Flip BGR pixels to RGB */
+ if (transforms & PNG_TRANSFORM_BGR)
+ png_set_bgr(png_ptr);
+#endif
+
+#ifdef PNG_WRITE_SWAP_SUPPORTED
+ /* Swap bytes of 16-bit files to most significant byte first */
+ if (transforms & PNG_TRANSFORM_SWAP_ENDIAN)
+ png_set_swap(png_ptr);
+#endif
+
+#ifdef PNG_WRITE_PACKSWAP_SUPPORTED
+ /* Swap bits of 1, 2, 4 bit packed pixel formats */
+ if (transforms & PNG_TRANSFORM_PACKSWAP)
+ png_set_packswap(png_ptr);
+#endif
+
+#ifdef PNG_WRITE_INVERT_ALPHA_SUPPORTED
+ /* Invert the alpha channel from opacity to transparency */
+ if (transforms & PNG_TRANSFORM_INVERT_ALPHA)
+ png_set_invert_alpha(png_ptr);
+#endif
+
+ /* ----------------------- end of transformations ------------------- */
+
+ /* Write the bits */
+ if (info_ptr->valid & PNG_INFO_IDAT)
+ png_write_image(png_ptr, info_ptr->row_pointers);
+
+ /* It is REQUIRED to call this to finish writing the rest of the file */
+ png_write_end(png_ptr, info_ptr);
+
+ transforms = transforms; /* Quiet compiler warnings */
+ params = params;
+}
+#endif
+#endif /* PNG_WRITE_SUPPORTED */
diff --git a/src/3rdparty/libpng/pngwtran.c b/src/3rdparty/libpng/pngwtran.c
new file mode 100644
index 0000000..9c8a6e7
--- /dev/null
+++ b/src/3rdparty/libpng/pngwtran.c
@@ -0,0 +1,565 @@
+
+/* pngwtran.c - transforms the data in a row for PNG writers
+ *
+ * Last changed in libpng 1.4.0 [January 3, 2010]
+ * Copyright (c) 1998-2010 Glenn Randers-Pehrson
+ * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
+ * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ */
+
+#define PNG_NO_PEDANTIC_WARNINGS
+#include "png.h"
+#ifdef PNG_WRITE_SUPPORTED
+#include "pngpriv.h"
+
+/* Transform the data according to the user's wishes. The order of
+ * transformations is significant.
+ */
+void /* PRIVATE */
+png_do_write_transformations(png_structp png_ptr)
+{
+ png_debug(1, "in png_do_write_transformations");
+
+ if (png_ptr == NULL)
+ return;
+
+#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
+ if (png_ptr->transformations & PNG_USER_TRANSFORM)
+ if (png_ptr->write_user_transform_fn != NULL)
+ (*(png_ptr->write_user_transform_fn)) /* User write transform function */
+ (png_ptr, /* png_ptr */
+ &(png_ptr->row_info), /* row_info: */
+ /* png_uint_32 width; width of row */
+ /* png_uint_32 rowbytes; number of bytes in row */
+ /* png_byte color_type; color type of pixels */
+ /* png_byte bit_depth; bit depth of samples */
+ /* png_byte channels; number of channels (1-4) */
+ /* png_byte pixel_depth; bits per pixel (depth*channels) */
+ png_ptr->row_buf + 1); /* start of pixel data for row */
+#endif
+#ifdef PNG_WRITE_FILLER_SUPPORTED
+ if (png_ptr->transformations & PNG_FILLER)
+ png_do_strip_filler(&(png_ptr->row_info), png_ptr->row_buf + 1,
+ png_ptr->flags);
+#endif
+#ifdef PNG_WRITE_PACKSWAP_SUPPORTED
+ if (png_ptr->transformations & PNG_PACKSWAP)
+ png_do_packswap(&(png_ptr->row_info), png_ptr->row_buf + 1);
+#endif
+#ifdef PNG_WRITE_PACK_SUPPORTED
+ if (png_ptr->transformations & PNG_PACK)
+ png_do_pack(&(png_ptr->row_info), png_ptr->row_buf + 1,
+ (png_uint_32)png_ptr->bit_depth);
+#endif
+#ifdef PNG_WRITE_SWAP_SUPPORTED
+ if (png_ptr->transformations & PNG_SWAP_BYTES)
+ png_do_swap(&(png_ptr->row_info), png_ptr->row_buf + 1);
+#endif
+#ifdef PNG_WRITE_SHIFT_SUPPORTED
+ if (png_ptr->transformations & PNG_SHIFT)
+ png_do_shift(&(png_ptr->row_info), png_ptr->row_buf + 1,
+ &(png_ptr->shift));
+#endif
+#ifdef PNG_WRITE_SWAP_ALPHA_SUPPORTED
+ if (png_ptr->transformations & PNG_SWAP_ALPHA)
+ png_do_write_swap_alpha(&(png_ptr->row_info), png_ptr->row_buf + 1);
+#endif
+#ifdef PNG_WRITE_INVERT_ALPHA_SUPPORTED
+ if (png_ptr->transformations & PNG_INVERT_ALPHA)
+ png_do_write_invert_alpha(&(png_ptr->row_info), png_ptr->row_buf + 1);
+#endif
+#ifdef PNG_WRITE_BGR_SUPPORTED
+ if (png_ptr->transformations & PNG_BGR)
+ png_do_bgr(&(png_ptr->row_info), png_ptr->row_buf + 1);
+#endif
+#ifdef PNG_WRITE_INVERT_SUPPORTED
+ if (png_ptr->transformations & PNG_INVERT_MONO)
+ png_do_invert(&(png_ptr->row_info), png_ptr->row_buf + 1);
+#endif
+}
+
+#ifdef PNG_WRITE_PACK_SUPPORTED
+/* Pack pixels into bytes. Pass the true bit depth in bit_depth. The
+ * row_info bit depth should be 8 (one pixel per byte). The channels
+ * should be 1 (this only happens on grayscale and paletted images).
+ */
+void /* PRIVATE */
+png_do_pack(png_row_infop row_info, png_bytep row, png_uint_32 bit_depth)
+{
+ png_debug(1, "in png_do_pack");
+
+ if (row_info->bit_depth == 8 &&
+ row_info->channels == 1)
+ {
+ switch ((int)bit_depth)
+ {
+ case 1:
+ {
+ png_bytep sp, dp;
+ int mask, v;
+ png_uint_32 i;
+ png_uint_32 row_width = row_info->width;
+
+ sp = row;
+ dp = row;
+ mask = 0x80;
+ v = 0;
+
+ for (i = 0; i < row_width; i++)
+ {
+ if (*sp != 0)
+ v |= mask;
+ sp++;
+ if (mask > 1)
+ mask >>= 1;
+ else
+ {
+ mask = 0x80;
+ *dp = (png_byte)v;
+ dp++;
+ v = 0;
+ }
+ }
+ if (mask != 0x80)
+ *dp = (png_byte)v;
+ break;
+ }
+ case 2:
+ {
+ png_bytep sp, dp;
+ int shift, v;
+ png_uint_32 i;
+ png_uint_32 row_width = row_info->width;
+
+ sp = row;
+ dp = row;
+ shift = 6;
+ v = 0;
+ for (i = 0; i < row_width; i++)
+ {
+ png_byte value;
+
+ value = (png_byte)(*sp & 0x03);
+ v |= (value << shift);
+ if (shift == 0)
+ {
+ shift = 6;
+ *dp = (png_byte)v;
+ dp++;
+ v = 0;
+ }
+ else
+ shift -= 2;
+ sp++;
+ }
+ if (shift != 6)
+ *dp = (png_byte)v;
+ break;
+ }
+ case 4:
+ {
+ png_bytep sp, dp;
+ int shift, v;
+ png_uint_32 i;
+ png_uint_32 row_width = row_info->width;
+
+ sp = row;
+ dp = row;
+ shift = 4;
+ v = 0;
+ for (i = 0; i < row_width; i++)
+ {
+ png_byte value;
+
+ value = (png_byte)(*sp & 0x0f);
+ v |= (value << shift);
+
+ if (shift == 0)
+ {
+ shift = 4;
+ *dp = (png_byte)v;
+ dp++;
+ v = 0;
+ }
+ else
+ shift -= 4;
+
+ sp++;
+ }
+ if (shift != 4)
+ *dp = (png_byte)v;
+ break;
+ }
+ }
+ row_info->bit_depth = (png_byte)bit_depth;
+ row_info->pixel_depth = (png_byte)(bit_depth * row_info->channels);
+ row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth,
+ row_info->width);
+ }
+}
+#endif
+
+#ifdef PNG_WRITE_SHIFT_SUPPORTED
+/* Shift pixel values to take advantage of whole range. Pass the
+ * true number of bits in bit_depth. The row should be packed
+ * according to row_info->bit_depth. Thus, if you had a row of
+ * bit depth 4, but the pixels only had values from 0 to 7, you
+ * would pass 3 as bit_depth, and this routine would translate the
+ * data to 0 to 15.
+ */
+void /* PRIVATE */
+png_do_shift(png_row_infop row_info, png_bytep row, png_color_8p bit_depth)
+{
+ png_debug(1, "in png_do_shift");
+
+ if (
+ row_info->color_type != PNG_COLOR_TYPE_PALETTE)
+ {
+ int shift_start[4], shift_dec[4];
+ int channels = 0;
+
+ if (row_info->color_type & PNG_COLOR_MASK_COLOR)
+ {
+ shift_start[channels] = row_info->bit_depth - bit_depth->red;
+ shift_dec[channels] = bit_depth->red;
+ channels++;
+ shift_start[channels] = row_info->bit_depth - bit_depth->green;
+ shift_dec[channels] = bit_depth->green;
+ channels++;
+ shift_start[channels] = row_info->bit_depth - bit_depth->blue;
+ shift_dec[channels] = bit_depth->blue;
+ channels++;
+ }
+ else
+ {
+ shift_start[channels] = row_info->bit_depth - bit_depth->gray;
+ shift_dec[channels] = bit_depth->gray;
+ channels++;
+ }
+ if (row_info->color_type & PNG_COLOR_MASK_ALPHA)
+ {
+ shift_start[channels] = row_info->bit_depth - bit_depth->alpha;
+ shift_dec[channels] = bit_depth->alpha;
+ channels++;
+ }
+
+ /* With low row depths, could only be grayscale, so one channel */
+ if (row_info->bit_depth < 8)
+ {
+ png_bytep bp = row;
+ png_uint_32 i;
+ png_byte mask;
+ png_uint_32 row_bytes = row_info->rowbytes;
+
+ if (bit_depth->gray == 1 && row_info->bit_depth == 2)
+ mask = 0x55;
+ else if (row_info->bit_depth == 4 && bit_depth->gray == 3)
+ mask = 0x11;
+ else
+ mask = 0xff;
+
+ for (i = 0; i < row_bytes; i++, bp++)
+ {
+ png_uint_16 v;
+ int j;
+
+ v = *bp;
+ *bp = 0;
+ for (j = shift_start[0]; j > -shift_dec[0]; j -= shift_dec[0])
+ {
+ if (j > 0)
+ *bp |= (png_byte)((v << j) & 0xff);
+ else
+ *bp |= (png_byte)((v >> (-j)) & mask);
+ }
+ }
+ }
+ else if (row_info->bit_depth == 8)
+ {
+ png_bytep bp = row;
+ png_uint_32 i;
+ png_uint_32 istop = channels * row_info->width;
+
+ for (i = 0; i < istop; i++, bp++)
+ {
+
+ png_uint_16 v;
+ int j;
+ int c = (int)(i%channels);
+
+ v = *bp;
+ *bp = 0;
+ for (j = shift_start[c]; j > -shift_dec[c]; j -= shift_dec[c])
+ {
+ if (j > 0)
+ *bp |= (png_byte)((v << j) & 0xff);
+ else
+ *bp |= (png_byte)((v >> (-j)) & 0xff);
+ }
+ }
+ }
+ else
+ {
+ png_bytep bp;
+ png_uint_32 i;
+ png_uint_32 istop = channels * row_info->width;
+
+ for (bp = row, i = 0; i < istop; i++)
+ {
+ int c = (int)(i%channels);
+ png_uint_16 value, v;
+ int j;
+
+ v = (png_uint_16)(((png_uint_16)(*bp) << 8) + *(bp + 1));
+ value = 0;
+ for (j = shift_start[c]; j > -shift_dec[c]; j -= shift_dec[c])
+ {
+ if (j > 0)
+ value |= (png_uint_16)((v << j) & (png_uint_16)0xffff);
+ else
+ value |= (png_uint_16)((v >> (-j)) & (png_uint_16)0xffff);
+ }
+ *bp++ = (png_byte)(value >> 8);
+ *bp++ = (png_byte)(value & 0xff);
+ }
+ }
+ }
+}
+#endif
+
+#ifdef PNG_WRITE_SWAP_ALPHA_SUPPORTED
+void /* PRIVATE */
+png_do_write_swap_alpha(png_row_infop row_info, png_bytep row)
+{
+ png_debug(1, "in png_do_write_swap_alpha");
+
+ {
+ if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
+ {
+ /* This converts from ARGB to RGBA */
+ if (row_info->bit_depth == 8)
+ {
+ png_bytep sp, dp;
+ png_uint_32 i;
+ png_uint_32 row_width = row_info->width;
+ for (i = 0, sp = dp = row; i < row_width; i++)
+ {
+ png_byte save = *(sp++);
+ *(dp++) = *(sp++);
+ *(dp++) = *(sp++);
+ *(dp++) = *(sp++);
+ *(dp++) = save;
+ }
+ }
+ /* This converts from AARRGGBB to RRGGBBAA */
+ else
+ {
+ png_bytep sp, dp;
+ png_uint_32 i;
+ png_uint_32 row_width = row_info->width;
+
+ for (i = 0, sp = dp = row; i < row_width; i++)
+ {
+ png_byte save[2];
+ save[0] = *(sp++);
+ save[1] = *(sp++);
+ *(dp++) = *(sp++);
+ *(dp++) = *(sp++);
+ *(dp++) = *(sp++);
+ *(dp++) = *(sp++);
+ *(dp++) = *(sp++);
+ *(dp++) = *(sp++);
+ *(dp++) = save[0];
+ *(dp++) = save[1];
+ }
+ }
+ }
+ else if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
+ {
+ /* This converts from AG to GA */
+ if (row_info->bit_depth == 8)
+ {
+ png_bytep sp, dp;
+ png_uint_32 i;
+ png_uint_32 row_width = row_info->width;
+
+ for (i = 0, sp = dp = row; i < row_width; i++)
+ {
+ png_byte save = *(sp++);
+ *(dp++) = *(sp++);
+ *(dp++) = save;
+ }
+ }
+ /* This converts from AAGG to GGAA */
+ else
+ {
+ png_bytep sp, dp;
+ png_uint_32 i;
+ png_uint_32 row_width = row_info->width;
+
+ for (i = 0, sp = dp = row; i < row_width; i++)
+ {
+ png_byte save[2];
+ save[0] = *(sp++);
+ save[1] = *(sp++);
+ *(dp++) = *(sp++);
+ *(dp++) = *(sp++);
+ *(dp++) = save[0];
+ *(dp++) = save[1];
+ }
+ }
+ }
+ }
+}
+#endif
+
+#ifdef PNG_WRITE_INVERT_ALPHA_SUPPORTED
+void /* PRIVATE */
+png_do_write_invert_alpha(png_row_infop row_info, png_bytep row)
+{
+ png_debug(1, "in png_do_write_invert_alpha");
+
+ {
+ if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
+ {
+ /* This inverts the alpha channel in RGBA */
+ if (row_info->bit_depth == 8)
+ {
+ png_bytep sp, dp;
+ png_uint_32 i;
+ png_uint_32 row_width = row_info->width;
+ for (i = 0, sp = dp = row; i < row_width; i++)
+ {
+ /* Does nothing
+ *(dp++) = *(sp++);
+ *(dp++) = *(sp++);
+ *(dp++) = *(sp++);
+ */
+ sp+=3; dp = sp;
+ *(dp++) = (png_byte)(255 - *(sp++));
+ }
+ }
+ /* This inverts the alpha channel in RRGGBBAA */
+ else
+ {
+ png_bytep sp, dp;
+ png_uint_32 i;
+ png_uint_32 row_width = row_info->width;
+
+ for (i = 0, sp = dp = row; i < row_width; i++)
+ {
+ /* Does nothing
+ *(dp++) = *(sp++);
+ *(dp++) = *(sp++);
+ *(dp++) = *(sp++);
+ *(dp++) = *(sp++);
+ *(dp++) = *(sp++);
+ *(dp++) = *(sp++);
+ */
+ sp+=6; dp = sp;
+ *(dp++) = (png_byte)(255 - *(sp++));
+ *(dp++) = (png_byte)(255 - *(sp++));
+ }
+ }
+ }
+ else if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
+ {
+ /* This inverts the alpha channel in GA */
+ if (row_info->bit_depth == 8)
+ {
+ png_bytep sp, dp;
+ png_uint_32 i;
+ png_uint_32 row_width = row_info->width;
+
+ for (i = 0, sp = dp = row; i < row_width; i++)
+ {
+ *(dp++) = *(sp++);
+ *(dp++) = (png_byte)(255 - *(sp++));
+ }
+ }
+ /* This inverts the alpha channel in GGAA */
+ else
+ {
+ png_bytep sp, dp;
+ png_uint_32 i;
+ png_uint_32 row_width = row_info->width;
+
+ for (i = 0, sp = dp = row; i < row_width; i++)
+ {
+ /* Does nothing
+ *(dp++) = *(sp++);
+ *(dp++) = *(sp++);
+ */
+ sp+=2; dp = sp;
+ *(dp++) = (png_byte)(255 - *(sp++));
+ *(dp++) = (png_byte)(255 - *(sp++));
+ }
+ }
+ }
+ }
+}
+#endif
+
+#ifdef PNG_MNG_FEATURES_SUPPORTED
+/* Undoes intrapixel differencing */
+void /* PRIVATE */
+png_do_write_intrapixel(png_row_infop row_info, png_bytep row)
+{
+ png_debug(1, "in png_do_write_intrapixel");
+
+ if (
+ (row_info->color_type & PNG_COLOR_MASK_COLOR))
+ {
+ int bytes_per_pixel;
+ png_uint_32 row_width = row_info->width;
+ if (row_info->bit_depth == 8)
+ {
+ png_bytep rp;
+ png_uint_32 i;
+
+ if (row_info->color_type == PNG_COLOR_TYPE_RGB)
+ bytes_per_pixel = 3;
+ else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
+ bytes_per_pixel = 4;
+ else
+ return;
+
+ for (i = 0, rp = row; i < row_width; i++, rp += bytes_per_pixel)
+ {
+ *(rp) = (png_byte)((*rp - *(rp+1))&0xff);
+ *(rp+2) = (png_byte)((*(rp+2) - *(rp+1))&0xff);
+ }
+ }
+ else if (row_info->bit_depth == 16)
+ {
+ png_bytep rp;
+ png_uint_32 i;
+
+ if (row_info->color_type == PNG_COLOR_TYPE_RGB)
+ bytes_per_pixel = 6;
+ else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
+ bytes_per_pixel = 8;
+ else
+ return;
+
+ for (i = 0, rp = row; i < row_width; i++, rp += bytes_per_pixel)
+ {
+ png_uint_32 s0 = (*(rp ) << 8) | *(rp+1);
+ png_uint_32 s1 = (*(rp+2) << 8) | *(rp+3);
+ png_uint_32 s2 = (*(rp+4) << 8) | *(rp+5);
+ png_uint_32 red = (png_uint_32)((s0 - s1) & 0xffffL);
+ png_uint_32 blue = (png_uint_32)((s2 - s1) & 0xffffL);
+ *(rp ) = (png_byte)((red >> 8) & 0xff);
+ *(rp+1) = (png_byte)(red & 0xff);
+ *(rp+4) = (png_byte)((blue >> 8) & 0xff);
+ *(rp+5) = (png_byte)(blue & 0xff);
+ }
+ }
+ }
+}
+#endif /* PNG_MNG_FEATURES_SUPPORTED */
+#endif /* PNG_WRITE_SUPPORTED */
diff --git a/src/3rdparty/libpng/pngwutil.c b/src/3rdparty/libpng/pngwutil.c
new file mode 100644
index 0000000..eddac5b
--- /dev/null
+++ b/src/3rdparty/libpng/pngwutil.c
@@ -0,0 +1,2783 @@
+
+/* pngwutil.c - utilities to write a PNG file
+ *
+ * Last changed in libpng 1.4.0 [January 3, 2010]
+ * Copyright (c) 1998-2010 Glenn Randers-Pehrson
+ * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
+ * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ */
+
+#define PNG_NO_PEDANTIC_WARNINGS
+#include "png.h"
+#ifdef PNG_WRITE_SUPPORTED
+#include "pngpriv.h"
+
+/* Place a 32-bit number into a buffer in PNG byte order. We work
+ * with unsigned numbers for convenience, although one supported
+ * ancillary chunk uses signed (two's complement) numbers.
+ */
+void PNGAPI
+png_save_uint_32(png_bytep buf, png_uint_32 i)
+{
+ buf[0] = (png_byte)((i >> 24) & 0xff);
+ buf[1] = (png_byte)((i >> 16) & 0xff);
+ buf[2] = (png_byte)((i >> 8) & 0xff);
+ buf[3] = (png_byte)(i & 0xff);
+}
+
+#ifdef PNG_SAVE_INT_32_SUPPORTED
+/* The png_save_int_32 function assumes integers are stored in two's
+ * complement format. If this isn't the case, then this routine needs to
+ * be modified to write data in two's complement format.
+ */
+void PNGAPI
+png_save_int_32(png_bytep buf, png_int_32 i)
+{
+ buf[0] = (png_byte)((i >> 24) & 0xff);
+ buf[1] = (png_byte)((i >> 16) & 0xff);
+ buf[2] = (png_byte)((i >> 8) & 0xff);
+ buf[3] = (png_byte)(i & 0xff);
+}
+#endif
+
+/* Place a 16-bit number into a buffer in PNG byte order.
+ * The parameter is declared unsigned int, not png_uint_16,
+ * just to avoid potential problems on pre-ANSI C compilers.
+ */
+void PNGAPI
+png_save_uint_16(png_bytep buf, unsigned int i)
+{
+ buf[0] = (png_byte)((i >> 8) & 0xff);
+ buf[1] = (png_byte)(i & 0xff);
+}
+
+/* Simple function to write the signature. If we have already written
+ * the magic bytes of the signature, or more likely, the PNG stream is
+ * being embedded into another stream and doesn't need its own signature,
+ * we should call png_set_sig_bytes() to tell libpng how many of the
+ * bytes have already been written.
+ */
+void PNGAPI
+png_write_sig(png_structp png_ptr)
+{
+ png_byte png_signature[8] = {137, 80, 78, 71, 13, 10, 26, 10};
+
+#ifdef PNG_IO_STATE_SUPPORTED
+ /* Inform the I/O callback that the signature is being written */
+ png_ptr->io_state = PNG_IO_WRITING | PNG_IO_SIGNATURE;
+#endif
+
+ /* Write the rest of the 8 byte signature */
+ png_write_data(png_ptr, &png_signature[png_ptr->sig_bytes],
+ (png_size_t)(8 - png_ptr->sig_bytes));
+ if (png_ptr->sig_bytes < 3)
+ png_ptr->mode |= PNG_HAVE_PNG_SIGNATURE;
+}
+
+/* Write a PNG chunk all at once. The type is an array of ASCII characters
+ * representing the chunk name. The array must be at least 4 bytes in
+ * length, and does not need to be null terminated. To be safe, pass the
+ * pre-defined chunk names here, and if you need a new one, define it
+ * where the others are defined. The length is the length of the data.
+ * All the data must be present. If that is not possible, use the
+ * png_write_chunk_start(), png_write_chunk_data(), and png_write_chunk_end()
+ * functions instead.
+ */
+void PNGAPI
+png_write_chunk(png_structp png_ptr, png_bytep chunk_name,
+ png_bytep data, png_size_t length)
+{
+ if (png_ptr == NULL)
+ return;
+ png_write_chunk_start(png_ptr, chunk_name, (png_uint_32)length);
+ png_write_chunk_data(png_ptr, data, (png_size_t)length);
+ png_write_chunk_end(png_ptr);
+}
+
+/* Write the start of a PNG chunk. The type is the chunk type.
+ * The total_length is the sum of the lengths of all the data you will be
+ * passing in png_write_chunk_data().
+ */
+void PNGAPI
+png_write_chunk_start(png_structp png_ptr, png_bytep chunk_name,
+ png_uint_32 length)
+{
+ png_byte buf[8];
+
+ png_debug2(0, "Writing %s chunk, length = %lu", chunk_name,
+ (unsigned long)length);
+
+ if (png_ptr == NULL)
+ return;
+
+#ifdef PNG_IO_STATE_SUPPORTED
+ /* Inform the I/O callback that the chunk header is being written.
+ * PNG_IO_CHUNK_HDR requires a single I/O call.
+ */
+ png_ptr->io_state = PNG_IO_WRITING | PNG_IO_CHUNK_HDR;
+#endif
+
+ /* Write the length and the chunk name */
+ png_save_uint_32(buf, length);
+ png_memcpy(buf + 4, chunk_name, 4);
+ png_write_data(png_ptr, buf, (png_size_t)8);
+ /* Put the chunk name into png_ptr->chunk_name */
+ png_memcpy(png_ptr->chunk_name, chunk_name, 4);
+ /* Reset the crc and run it over the chunk name */
+ png_reset_crc(png_ptr);
+ png_calculate_crc(png_ptr, chunk_name, 4);
+
+#ifdef PNG_IO_STATE_SUPPORTED
+ /* Inform the I/O callback that chunk data will (possibly) be written.
+ * PNG_IO_CHUNK_DATA does NOT require a specific number of I/O calls.
+ */
+ png_ptr->io_state = PNG_IO_WRITING | PNG_IO_CHUNK_DATA;
+#endif
+}
+
+/* Write the data of a PNG chunk started with png_write_chunk_start().
+ * Note that multiple calls to this function are allowed, and that the
+ * sum of the lengths from these calls *must* add up to the total_length
+ * given to png_write_chunk_start().
+ */
+void PNGAPI
+png_write_chunk_data(png_structp png_ptr, png_bytep data, png_size_t length)
+{
+ /* Write the data, and run the CRC over it */
+ if (png_ptr == NULL)
+ return;
+ if (data != NULL && length > 0)
+ {
+ png_write_data(png_ptr, data, length);
+ /* Update the CRC after writing the data,
+ * in case that the user I/O routine alters it.
+ */
+ png_calculate_crc(png_ptr, data, length);
+ }
+}
+
+/* Finish a chunk started with png_write_chunk_start(). */
+void PNGAPI
+png_write_chunk_end(png_structp png_ptr)
+{
+ png_byte buf[4];
+
+ if (png_ptr == NULL) return;
+
+#ifdef PNG_IO_STATE_SUPPORTED
+ /* Inform the I/O callback that the chunk CRC is being written.
+ * PNG_IO_CHUNK_CRC requires a single I/O function call.
+ */
+ png_ptr->io_state = PNG_IO_WRITING | PNG_IO_CHUNK_CRC;
+#endif
+
+ /* Write the crc in a single operation */
+ png_save_uint_32(buf, png_ptr->crc);
+
+ png_write_data(png_ptr, buf, (png_size_t)4);
+}
+
+#if defined(PNG_WRITE_TEXT_SUPPORTED) || defined(PNG_WRITE_iCCP_SUPPORTED)
+/* This pair of functions encapsulates the operation of (a) compressing a
+ * text string, and (b) issuing it later as a series of chunk data writes.
+ * The compression_state structure is shared context for these functions
+ * set up by the caller in order to make the whole mess thread-safe.
+ */
+
+typedef struct
+{
+ char *input; /* The uncompressed input data */
+ int input_len; /* Its length */
+ int num_output_ptr; /* Number of output pointers used */
+ int max_output_ptr; /* Size of output_ptr */
+ png_charpp output_ptr; /* Array of pointers to output */
+} compression_state;
+
+/* Compress given text into storage in the png_ptr structure */
+static int /* PRIVATE */
+png_text_compress(png_structp png_ptr,
+ png_charp text, png_size_t text_len, int compression,
+ compression_state *comp)
+{
+ int ret;
+
+ comp->num_output_ptr = 0;
+ comp->max_output_ptr = 0;
+ comp->output_ptr = NULL;
+ comp->input = NULL;
+ comp->input_len = 0;
+
+ /* We may just want to pass the text right through */
+ if (compression == PNG_TEXT_COMPRESSION_NONE)
+ {
+ comp->input = text;
+ comp->input_len = text_len;
+ return((int)text_len);
+ }
+
+ if (compression >= PNG_TEXT_COMPRESSION_LAST)
+ {
+#ifdef PNG_STDIO_SUPPORTED
+ char msg[50];
+ png_snprintf(msg, 50, "Unknown compression type %d", compression);
+ png_warning(png_ptr, msg);
+#else
+ png_warning(png_ptr, "Unknown compression type");
+#endif
+ }
+
+ /* We can't write the chunk until we find out how much data we have,
+ * which means we need to run the compressor first and save the
+ * output. This shouldn't be a problem, as the vast majority of
+ * comments should be reasonable, but we will set up an array of
+ * malloc'd pointers to be sure.
+ *
+ * If we knew the application was well behaved, we could simplify this
+ * greatly by assuming we can always malloc an output buffer large
+ * enough to hold the compressed text ((1001 * text_len / 1000) + 12)
+ * and malloc this directly. The only time this would be a bad idea is
+ * if we can't malloc more than 64K and we have 64K of random input
+ * data, or if the input string is incredibly large (although this
+ * wouldn't cause a failure, just a slowdown due to swapping).
+ */
+
+ /* Set up the compression buffers */
+ png_ptr->zstream.avail_in = (uInt)text_len;
+ png_ptr->zstream.next_in = (Bytef *)text;
+ png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size;
+ png_ptr->zstream.next_out = (Bytef *)png_ptr->zbuf;
+
+ /* This is the same compression loop as in png_write_row() */
+ do
+ {
+ /* Compress the data */
+ ret = deflate(&png_ptr->zstream, Z_NO_FLUSH);
+ if (ret != Z_OK)
+ {
+ /* Error */
+ if (png_ptr->zstream.msg != NULL)
+ png_error(png_ptr, png_ptr->zstream.msg);
+ else
+ png_error(png_ptr, "zlib error");
+ }
+ /* Check to see if we need more room */
+ if (!(png_ptr->zstream.avail_out))
+ {
+ /* Make sure the output array has room */
+ if (comp->num_output_ptr >= comp->max_output_ptr)
+ {
+ int old_max;
+
+ old_max = comp->max_output_ptr;
+ comp->max_output_ptr = comp->num_output_ptr + 4;
+ if (comp->output_ptr != NULL)
+ {
+ png_charpp old_ptr;
+
+ old_ptr = comp->output_ptr;
+ comp->output_ptr = (png_charpp)png_malloc(png_ptr,
+ (png_alloc_size_t)
+ (comp->max_output_ptr * png_sizeof(png_charpp)));
+ png_memcpy(comp->output_ptr, old_ptr, old_max
+ * png_sizeof(png_charp));
+ png_free(png_ptr, old_ptr);
+ }
+ else
+ comp->output_ptr = (png_charpp)png_malloc(png_ptr,
+ (png_alloc_size_t)
+ (comp->max_output_ptr * png_sizeof(png_charp)));
+ }
+
+ /* Save the data */
+ comp->output_ptr[comp->num_output_ptr] =
+ (png_charp)png_malloc(png_ptr,
+ (png_alloc_size_t)png_ptr->zbuf_size);
+ png_memcpy(comp->output_ptr[comp->num_output_ptr], png_ptr->zbuf,
+ png_ptr->zbuf_size);
+ comp->num_output_ptr++;
+
+ /* and reset the buffer */
+ png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size;
+ png_ptr->zstream.next_out = png_ptr->zbuf;
+ }
+ /* Continue until we don't have any more to compress */
+ } while (png_ptr->zstream.avail_in);
+
+ /* Finish the compression */
+ do
+ {
+ /* Tell zlib we are finished */
+ ret = deflate(&png_ptr->zstream, Z_FINISH);
+
+ if (ret == Z_OK)
+ {
+ /* Check to see if we need more room */
+ if (!(png_ptr->zstream.avail_out))
+ {
+ /* Check to make sure our output array has room */
+ if (comp->num_output_ptr >= comp->max_output_ptr)
+ {
+ int old_max;
+
+ old_max = comp->max_output_ptr;
+ comp->max_output_ptr = comp->num_output_ptr + 4;
+ if (comp->output_ptr != NULL)
+ {
+ png_charpp old_ptr;
+
+ old_ptr = comp->output_ptr;
+ /* This could be optimized to realloc() */
+ comp->output_ptr = (png_charpp)png_malloc(png_ptr,
+ (png_alloc_size_t)(comp->max_output_ptr *
+ png_sizeof(png_charp)));
+ png_memcpy(comp->output_ptr, old_ptr,
+ old_max * png_sizeof(png_charp));
+ png_free(png_ptr, old_ptr);
+ }
+ else
+ comp->output_ptr = (png_charpp)png_malloc(png_ptr,
+ (png_alloc_size_t)(comp->max_output_ptr *
+ png_sizeof(png_charp)));
+ }
+
+ /* Save the data */
+ comp->output_ptr[comp->num_output_ptr] =
+ (png_charp)png_malloc(png_ptr,
+ (png_alloc_size_t)png_ptr->zbuf_size);
+ png_memcpy(comp->output_ptr[comp->num_output_ptr], png_ptr->zbuf,
+ png_ptr->zbuf_size);
+ comp->num_output_ptr++;
+
+ /* and reset the buffer pointers */
+ png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size;
+ png_ptr->zstream.next_out = png_ptr->zbuf;
+ }
+ }
+ else if (ret != Z_STREAM_END)
+ {
+ /* We got an error */
+ if (png_ptr->zstream.msg != NULL)
+ png_error(png_ptr, png_ptr->zstream.msg);
+ else
+ png_error(png_ptr, "zlib error");
+ }
+ } while (ret != Z_STREAM_END);
+
+ /* Text length is number of buffers plus last buffer */
+ text_len = png_ptr->zbuf_size * comp->num_output_ptr;
+ if (png_ptr->zstream.avail_out < png_ptr->zbuf_size)
+ text_len += png_ptr->zbuf_size - (png_size_t)png_ptr->zstream.avail_out;
+
+ return((int)text_len);
+}
+
+/* Ship the compressed text out via chunk writes */
+static void /* PRIVATE */
+png_write_compressed_data_out(png_structp png_ptr, compression_state *comp)
+{
+ int i;
+
+ /* Handle the no-compression case */
+ if (comp->input)
+ {
+ png_write_chunk_data(png_ptr, (png_bytep)comp->input,
+ (png_size_t)comp->input_len);
+ return;
+ }
+
+ /* Write saved output buffers, if any */
+ for (i = 0; i < comp->num_output_ptr; i++)
+ {
+ png_write_chunk_data(png_ptr, (png_bytep)comp->output_ptr[i],
+ (png_size_t)png_ptr->zbuf_size);
+ png_free(png_ptr, comp->output_ptr[i]);
+ }
+ if (comp->max_output_ptr != 0)
+ png_free(png_ptr, comp->output_ptr);
+ /* Write anything left in zbuf */
+ if (png_ptr->zstream.avail_out < (png_uint_32)png_ptr->zbuf_size)
+ png_write_chunk_data(png_ptr, png_ptr->zbuf,
+ (png_size_t)(png_ptr->zbuf_size - png_ptr->zstream.avail_out));
+
+ /* Reset zlib for another zTXt/iTXt or image data */
+ deflateReset(&png_ptr->zstream);
+ png_ptr->zstream.data_type = Z_BINARY;
+}
+#endif
+
+/* Write the IHDR chunk, and update the png_struct with the necessary
+ * information. Note that the rest of this code depends upon this
+ * information being correct.
+ */
+void /* PRIVATE */
+png_write_IHDR(png_structp png_ptr, png_uint_32 width, png_uint_32 height,
+ int bit_depth, int color_type, int compression_type, int filter_type,
+ int interlace_type)
+{
+ PNG_IHDR;
+ int ret;
+
+ png_byte buf[13]; /* Buffer to store the IHDR info */
+
+ png_debug(1, "in png_write_IHDR");
+
+ /* Check that we have valid input data from the application info */
+ switch (color_type)
+ {
+ case PNG_COLOR_TYPE_GRAY:
+ switch (bit_depth)
+ {
+ case 1:
+ case 2:
+ case 4:
+ case 8:
+ case 16: png_ptr->channels = 1; break;
+ default: png_error(png_ptr, "Invalid bit depth for grayscale image");
+ }
+ break;
+ case PNG_COLOR_TYPE_RGB:
+ if (bit_depth != 8 && bit_depth != 16)
+ png_error(png_ptr, "Invalid bit depth for RGB image");
+ png_ptr->channels = 3;
+ break;
+ case PNG_COLOR_TYPE_PALETTE:
+ switch (bit_depth)
+ {
+ case 1:
+ case 2:
+ case 4:
+ case 8: png_ptr->channels = 1; break;
+ default: png_error(png_ptr, "Invalid bit depth for paletted image");
+ }
+ break;
+ case PNG_COLOR_TYPE_GRAY_ALPHA:
+ if (bit_depth != 8 && bit_depth != 16)
+ png_error(png_ptr, "Invalid bit depth for grayscale+alpha image");
+ png_ptr->channels = 2;
+ break;
+ case PNG_COLOR_TYPE_RGB_ALPHA:
+ if (bit_depth != 8 && bit_depth != 16)
+ png_error(png_ptr, "Invalid bit depth for RGBA image");
+ png_ptr->channels = 4;
+ break;
+ default:
+ png_error(png_ptr, "Invalid image color type specified");
+ }
+
+ if (compression_type != PNG_COMPRESSION_TYPE_BASE)
+ {
+ png_warning(png_ptr, "Invalid compression type specified");
+ compression_type = PNG_COMPRESSION_TYPE_BASE;
+ }
+
+ /* Write filter_method 64 (intrapixel differencing) only if
+ * 1. Libpng was compiled with PNG_MNG_FEATURES_SUPPORTED and
+ * 2. Libpng did not write a PNG signature (this filter_method is only
+ * used in PNG datastreams that are embedded in MNG datastreams) and
+ * 3. The application called png_permit_mng_features with a mask that
+ * included PNG_FLAG_MNG_FILTER_64 and
+ * 4. The filter_method is 64 and
+ * 5. The color_type is RGB or RGBA
+ */
+ if (
+#ifdef PNG_MNG_FEATURES_SUPPORTED
+ !((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) &&
+ ((png_ptr->mode&PNG_HAVE_PNG_SIGNATURE) == 0) &&
+ (color_type == PNG_COLOR_TYPE_RGB ||
+ color_type == PNG_COLOR_TYPE_RGB_ALPHA) &&
+ (filter_type == PNG_INTRAPIXEL_DIFFERENCING)) &&
+#endif
+ filter_type != PNG_FILTER_TYPE_BASE)
+ {
+ png_warning(png_ptr, "Invalid filter type specified");
+ filter_type = PNG_FILTER_TYPE_BASE;
+ }
+
+#ifdef PNG_WRITE_INTERLACING_SUPPORTED
+ if (interlace_type != PNG_INTERLACE_NONE &&
+ interlace_type != PNG_INTERLACE_ADAM7)
+ {
+ png_warning(png_ptr, "Invalid interlace type specified");
+ interlace_type = PNG_INTERLACE_ADAM7;
+ }
+#else
+ interlace_type=PNG_INTERLACE_NONE;
+#endif
+
+ /* Save the relevent information */
+ png_ptr->bit_depth = (png_byte)bit_depth;
+ png_ptr->color_type = (png_byte)color_type;
+ png_ptr->interlaced = (png_byte)interlace_type;
+#ifdef PNG_MNG_FEATURES_SUPPORTED
+ png_ptr->filter_type = (png_byte)filter_type;
+#endif
+ png_ptr->compression_type = (png_byte)compression_type;
+ png_ptr->width = width;
+ png_ptr->height = height;
+
+ png_ptr->pixel_depth = (png_byte)(bit_depth * png_ptr->channels);
+ png_ptr->rowbytes = PNG_ROWBYTES(png_ptr->pixel_depth, width);
+ /* Set the usr info, so any transformations can modify it */
+ png_ptr->usr_width = png_ptr->width;
+ png_ptr->usr_bit_depth = png_ptr->bit_depth;
+ png_ptr->usr_channels = png_ptr->channels;
+
+ /* Pack the header information into the buffer */
+ png_save_uint_32(buf, width);
+ png_save_uint_32(buf + 4, height);
+ buf[8] = (png_byte)bit_depth;
+ buf[9] = (png_byte)color_type;
+ buf[10] = (png_byte)compression_type;
+ buf[11] = (png_byte)filter_type;
+ buf[12] = (png_byte)interlace_type;
+
+ /* Write the chunk */
+ png_write_chunk(png_ptr, (png_bytep)png_IHDR, buf, (png_size_t)13);
+
+ /* Initialize zlib with PNG info */
+ png_ptr->zstream.zalloc = png_zalloc;
+ png_ptr->zstream.zfree = png_zfree;
+ png_ptr->zstream.opaque = (voidpf)png_ptr;
+ if (!(png_ptr->do_filter))
+ {
+ if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE ||
+ png_ptr->bit_depth < 8)
+ png_ptr->do_filter = PNG_FILTER_NONE;
+ else
+ png_ptr->do_filter = PNG_ALL_FILTERS;
+ }
+ if (!(png_ptr->flags & PNG_FLAG_ZLIB_CUSTOM_STRATEGY))
+ {
+ if (png_ptr->do_filter != PNG_FILTER_NONE)
+ png_ptr->zlib_strategy = Z_FILTERED;
+ else
+ png_ptr->zlib_strategy = Z_DEFAULT_STRATEGY;
+ }
+ if (!(png_ptr->flags & PNG_FLAG_ZLIB_CUSTOM_LEVEL))
+ png_ptr->zlib_level = Z_DEFAULT_COMPRESSION;
+ if (!(png_ptr->flags & PNG_FLAG_ZLIB_CUSTOM_MEM_LEVEL))
+ png_ptr->zlib_mem_level = 8;
+ if (!(png_ptr->flags & PNG_FLAG_ZLIB_CUSTOM_WINDOW_BITS))
+ png_ptr->zlib_window_bits = 15;
+ if (!(png_ptr->flags & PNG_FLAG_ZLIB_CUSTOM_METHOD))
+ png_ptr->zlib_method = 8;
+ ret = deflateInit2(&png_ptr->zstream, png_ptr->zlib_level,
+ png_ptr->zlib_method, png_ptr->zlib_window_bits,
+ png_ptr->zlib_mem_level, png_ptr->zlib_strategy);
+ if (ret != Z_OK)
+ {
+ if (ret == Z_VERSION_ERROR) png_error(png_ptr,
+ "zlib failed to initialize compressor -- version error");
+ if (ret == Z_STREAM_ERROR) png_error(png_ptr,
+ "zlib failed to initialize compressor -- stream error");
+ if (ret == Z_MEM_ERROR) png_error(png_ptr,
+ "zlib failed to initialize compressor -- mem error");
+ png_error(png_ptr, "zlib failed to initialize compressor");
+ }
+ png_ptr->zstream.next_out = png_ptr->zbuf;
+ png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size;
+ /* libpng is not interested in zstream.data_type */
+ /* Set it to a predefined value, to avoid its evaluation inside zlib */
+ png_ptr->zstream.data_type = Z_BINARY;
+
+ png_ptr->mode = PNG_HAVE_IHDR;
+}
+
+/* Write the palette. We are careful not to trust png_color to be in the
+ * correct order for PNG, so people can redefine it to any convenient
+ * structure.
+ */
+void /* PRIVATE */
+png_write_PLTE(png_structp png_ptr, png_colorp palette, png_uint_32 num_pal)
+{
+ PNG_PLTE;
+ png_uint_32 i;
+ png_colorp pal_ptr;
+ png_byte buf[3];
+
+ png_debug(1, "in png_write_PLTE");
+
+ if ((
+#ifdef PNG_MNG_FEATURES_SUPPORTED
+ !(png_ptr->mng_features_permitted & PNG_FLAG_MNG_EMPTY_PLTE) &&
+#endif
+ num_pal == 0) || num_pal > 256)
+ {
+ if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
+ {
+ png_error(png_ptr, "Invalid number of colors in palette");
+ }
+ else
+ {
+ png_warning(png_ptr, "Invalid number of colors in palette");
+ return;
+ }
+ }
+
+ if (!(png_ptr->color_type&PNG_COLOR_MASK_COLOR))
+ {
+ png_warning(png_ptr,
+ "Ignoring request to write a PLTE chunk in grayscale PNG");
+ return;
+ }
+
+ png_ptr->num_palette = (png_uint_16)num_pal;
+ png_debug1(3, "num_palette = %d", png_ptr->num_palette);
+
+ png_write_chunk_start(png_ptr, (png_bytep)png_PLTE,
+ (png_uint_32)(num_pal * 3));
+#ifdef PNG_POINTER_INDEXING_SUPPORTED
+ for (i = 0, pal_ptr = palette; i < num_pal; i++, pal_ptr++)
+ {
+ buf[0] = pal_ptr->red;
+ buf[1] = pal_ptr->green;
+ buf[2] = pal_ptr->blue;
+ png_write_chunk_data(png_ptr, buf, (png_size_t)3);
+ }
+#else
+ /* This is a little slower but some buggy compilers need to do this instead */
+ pal_ptr=palette;
+ for (i = 0; i < num_pal; i++)
+ {
+ buf[0] = pal_ptr[i].red;
+ buf[1] = pal_ptr[i].green;
+ buf[2] = pal_ptr[i].blue;
+ png_write_chunk_data(png_ptr, buf, (png_size_t)3);
+ }
+#endif
+ png_write_chunk_end(png_ptr);
+ png_ptr->mode |= PNG_HAVE_PLTE;
+}
+
+/* Write an IDAT chunk */
+void /* PRIVATE */
+png_write_IDAT(png_structp png_ptr, png_bytep data, png_size_t length)
+{
+ PNG_IDAT;
+
+ png_debug(1, "in png_write_IDAT");
+
+ /* Optimize the CMF field in the zlib stream. */
+ /* This hack of the zlib stream is compliant to the stream specification. */
+ if (!(png_ptr->mode & PNG_HAVE_IDAT) &&
+ png_ptr->compression_type == PNG_COMPRESSION_TYPE_BASE)
+ {
+ unsigned int z_cmf = data[0]; /* zlib compression method and flags */
+ if ((z_cmf & 0x0f) == 8 && (z_cmf & 0xf0) <= 0x70)
+ {
+ /* Avoid memory underflows and multiplication overflows.
+ *
+ * The conditions below are practically always satisfied;
+ * however, they still must be checked.
+ */
+ if (length >= 2 &&
+ png_ptr->height < 16384 && png_ptr->width < 16384)
+ {
+ png_uint_32 uncompressed_idat_size = png_ptr->height *
+ ((png_ptr->width *
+ png_ptr->channels * png_ptr->bit_depth + 15) >> 3);
+ unsigned int z_cinfo = z_cmf >> 4;
+ unsigned int half_z_window_size = 1 << (z_cinfo + 7);
+ while (uncompressed_idat_size <= half_z_window_size &&
+ half_z_window_size >= 256)
+ {
+ z_cinfo--;
+ half_z_window_size >>= 1;
+ }
+ z_cmf = (z_cmf & 0x0f) | (z_cinfo << 4);
+ if (data[0] != (png_byte)z_cmf)
+ {
+ data[0] = (png_byte)z_cmf;
+ data[1] &= 0xe0;
+ data[1] += (png_byte)(0x1f - ((z_cmf << 8) + data[1]) % 0x1f);
+ }
+ }
+ }
+ else
+ png_error(png_ptr,
+ "Invalid zlib compression method or flags in IDAT");
+ }
+
+ png_write_chunk(png_ptr, (png_bytep)png_IDAT, data, length);
+ png_ptr->mode |= PNG_HAVE_IDAT;
+}
+
+/* Write an IEND chunk */
+void /* PRIVATE */
+png_write_IEND(png_structp png_ptr)
+{
+ PNG_IEND;
+
+ png_debug(1, "in png_write_IEND");
+
+ png_write_chunk(png_ptr, (png_bytep)png_IEND, NULL,
+ (png_size_t)0);
+ png_ptr->mode |= PNG_HAVE_IEND;
+}
+
+#ifdef PNG_WRITE_gAMA_SUPPORTED
+/* Write a gAMA chunk */
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+void /* PRIVATE */
+png_write_gAMA(png_structp png_ptr, double file_gamma)
+{
+ PNG_gAMA;
+ png_uint_32 igamma;
+ png_byte buf[4];
+
+ png_debug(1, "in png_write_gAMA");
+
+ /* file_gamma is saved in 1/100,000ths */
+ igamma = (png_uint_32)(file_gamma * 100000.0 + 0.5);
+ png_save_uint_32(buf, igamma);
+ png_write_chunk(png_ptr, (png_bytep)png_gAMA, buf, (png_size_t)4);
+}
+#endif
+#ifdef PNG_FIXED_POINT_SUPPORTED
+void /* PRIVATE */
+png_write_gAMA_fixed(png_structp png_ptr, png_fixed_point file_gamma)
+{
+ PNG_gAMA;
+ png_byte buf[4];
+
+ png_debug(1, "in png_write_gAMA");
+
+ /* file_gamma is saved in 1/100,000ths */
+ png_save_uint_32(buf, (png_uint_32)file_gamma);
+ png_write_chunk(png_ptr, (png_bytep)png_gAMA, buf, (png_size_t)4);
+}
+#endif
+#endif
+
+#ifdef PNG_WRITE_sRGB_SUPPORTED
+/* Write a sRGB chunk */
+void /* PRIVATE */
+png_write_sRGB(png_structp png_ptr, int srgb_intent)
+{
+ PNG_sRGB;
+ png_byte buf[1];
+
+ png_debug(1, "in png_write_sRGB");
+
+ if (srgb_intent >= PNG_sRGB_INTENT_LAST)
+ png_warning(png_ptr,
+ "Invalid sRGB rendering intent specified");
+ buf[0]=(png_byte)srgb_intent;
+ png_write_chunk(png_ptr, (png_bytep)png_sRGB, buf, (png_size_t)1);
+}
+#endif
+
+#ifdef PNG_WRITE_iCCP_SUPPORTED
+/* Write an iCCP chunk */
+void /* PRIVATE */
+png_write_iCCP(png_structp png_ptr, png_charp name, int compression_type,
+ png_charp profile, int profile_len)
+{
+ PNG_iCCP;
+ png_size_t name_len;
+ png_charp new_name;
+ compression_state comp;
+ int embedded_profile_len = 0;
+
+ png_debug(1, "in png_write_iCCP");
+
+ comp.num_output_ptr = 0;
+ comp.max_output_ptr = 0;
+ comp.output_ptr = NULL;
+ comp.input = NULL;
+ comp.input_len = 0;
+
+ if ((name_len = png_check_keyword(png_ptr, name,
+ &new_name)) == 0)
+ return;
+
+ if (compression_type != PNG_COMPRESSION_TYPE_BASE)
+ png_warning(png_ptr, "Unknown compression type in iCCP chunk");
+
+ if (profile == NULL)
+ profile_len = 0;
+
+ if (profile_len > 3)
+ embedded_profile_len =
+ ((*( (png_bytep)profile ))<<24) |
+ ((*( (png_bytep)profile + 1))<<16) |
+ ((*( (png_bytep)profile + 2))<< 8) |
+ ((*( (png_bytep)profile + 3)) );
+
+ if (embedded_profile_len < 0)
+ {
+ png_warning(png_ptr,
+ "Embedded profile length in iCCP chunk is negative");
+ png_free(png_ptr, new_name);
+ return;
+ }
+
+ if (profile_len < embedded_profile_len)
+ {
+ png_warning(png_ptr,
+ "Embedded profile length too large in iCCP chunk");
+ png_free(png_ptr, new_name);
+ return;
+ }
+
+ if (profile_len > embedded_profile_len)
+ {
+ png_warning(png_ptr,
+ "Truncating profile to actual length in iCCP chunk");
+ profile_len = embedded_profile_len;
+ }
+
+ if (profile_len)
+ profile_len = png_text_compress(png_ptr, profile,
+ (png_size_t)profile_len, PNG_COMPRESSION_TYPE_BASE, &comp);
+
+ /* Make sure we include the NULL after the name and the compression type */
+ png_write_chunk_start(png_ptr, (png_bytep)png_iCCP,
+ (png_uint_32)(name_len + profile_len + 2));
+ new_name[name_len + 1] = 0x00;
+ png_write_chunk_data(png_ptr, (png_bytep)new_name,
+ (png_size_t)(name_len + 2));
+
+ if (profile_len)
+ png_write_compressed_data_out(png_ptr, &comp);
+
+ png_write_chunk_end(png_ptr);
+ png_free(png_ptr, new_name);
+}
+#endif
+
+#ifdef PNG_WRITE_sPLT_SUPPORTED
+/* Write a sPLT chunk */
+void /* PRIVATE */
+png_write_sPLT(png_structp png_ptr, png_sPLT_tp spalette)
+{
+ PNG_sPLT;
+ png_size_t name_len;
+ png_charp new_name;
+ png_byte entrybuf[10];
+ png_size_t entry_size = (spalette->depth == 8 ? 6 : 10);
+ png_size_t palette_size = entry_size * spalette->nentries;
+ png_sPLT_entryp ep;
+#ifndef PNG_POINTER_INDEXING_SUPPORTED
+ int i;
+#endif
+
+ png_debug(1, "in png_write_sPLT");
+
+ if ((name_len = png_check_keyword(png_ptr,spalette->name, &new_name))==0)
+ return;
+
+ /* Make sure we include the NULL after the name */
+ png_write_chunk_start(png_ptr, (png_bytep)png_sPLT,
+ (png_uint_32)(name_len + 2 + palette_size));
+ png_write_chunk_data(png_ptr, (png_bytep)new_name,
+ (png_size_t)(name_len + 1));
+ png_write_chunk_data(png_ptr, (png_bytep)&spalette->depth, (png_size_t)1);
+
+ /* Loop through each palette entry, writing appropriately */
+#ifdef PNG_POINTER_INDEXING_SUPPORTED
+ for (ep = spalette->entries; ep<spalette->entries + spalette->nentries; ep++)
+ {
+ if (spalette->depth == 8)
+ {
+ entrybuf[0] = (png_byte)ep->red;
+ entrybuf[1] = (png_byte)ep->green;
+ entrybuf[2] = (png_byte)ep->blue;
+ entrybuf[3] = (png_byte)ep->alpha;
+ png_save_uint_16(entrybuf + 4, ep->frequency);
+ }
+ else
+ {
+ png_save_uint_16(entrybuf + 0, ep->red);
+ png_save_uint_16(entrybuf + 2, ep->green);
+ png_save_uint_16(entrybuf + 4, ep->blue);
+ png_save_uint_16(entrybuf + 6, ep->alpha);
+ png_save_uint_16(entrybuf + 8, ep->frequency);
+ }
+ png_write_chunk_data(png_ptr, entrybuf, (png_size_t)entry_size);
+ }
+#else
+ ep=spalette->entries;
+ for (i=0; i>spalette->nentries; i++)
+ {
+ if (spalette->depth == 8)
+ {
+ entrybuf[0] = (png_byte)ep[i].red;
+ entrybuf[1] = (png_byte)ep[i].green;
+ entrybuf[2] = (png_byte)ep[i].blue;
+ entrybuf[3] = (png_byte)ep[i].alpha;
+ png_save_uint_16(entrybuf + 4, ep[i].frequency);
+ }
+ else
+ {
+ png_save_uint_16(entrybuf + 0, ep[i].red);
+ png_save_uint_16(entrybuf + 2, ep[i].green);
+ png_save_uint_16(entrybuf + 4, ep[i].blue);
+ png_save_uint_16(entrybuf + 6, ep[i].alpha);
+ png_save_uint_16(entrybuf + 8, ep[i].frequency);
+ }
+ png_write_chunk_data(png_ptr, entrybuf, (png_size_t)entry_size);
+ }
+#endif
+
+ png_write_chunk_end(png_ptr);
+ png_free(png_ptr, new_name);
+}
+#endif
+
+#ifdef PNG_WRITE_sBIT_SUPPORTED
+/* Write the sBIT chunk */
+void /* PRIVATE */
+png_write_sBIT(png_structp png_ptr, png_color_8p sbit, int color_type)
+{
+ PNG_sBIT;
+ png_byte buf[4];
+ png_size_t size;
+
+ png_debug(1, "in png_write_sBIT");
+
+ /* Make sure we don't depend upon the order of PNG_COLOR_8 */
+ if (color_type & PNG_COLOR_MASK_COLOR)
+ {
+ png_byte maxbits;
+
+ maxbits = (png_byte)(color_type==PNG_COLOR_TYPE_PALETTE ? 8 :
+ png_ptr->usr_bit_depth);
+ if (sbit->red == 0 || sbit->red > maxbits ||
+ sbit->green == 0 || sbit->green > maxbits ||
+ sbit->blue == 0 || sbit->blue > maxbits)
+ {
+ png_warning(png_ptr, "Invalid sBIT depth specified");
+ return;
+ }
+ buf[0] = sbit->red;
+ buf[1] = sbit->green;
+ buf[2] = sbit->blue;
+ size = 3;
+ }
+ else
+ {
+ if (sbit->gray == 0 || sbit->gray > png_ptr->usr_bit_depth)
+ {
+ png_warning(png_ptr, "Invalid sBIT depth specified");
+ return;
+ }
+ buf[0] = sbit->gray;
+ size = 1;
+ }
+
+ if (color_type & PNG_COLOR_MASK_ALPHA)
+ {
+ if (sbit->alpha == 0 || sbit->alpha > png_ptr->usr_bit_depth)
+ {
+ png_warning(png_ptr, "Invalid sBIT depth specified");
+ return;
+ }
+ buf[size++] = sbit->alpha;
+ }
+
+ png_write_chunk(png_ptr, (png_bytep)png_sBIT, buf, size);
+}
+#endif
+
+#ifdef PNG_WRITE_cHRM_SUPPORTED
+/* Write the cHRM chunk */
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+void /* PRIVATE */
+png_write_cHRM(png_structp png_ptr, double white_x, double white_y,
+ double red_x, double red_y, double green_x, double green_y,
+ double blue_x, double blue_y)
+{
+ PNG_cHRM;
+ png_byte buf[32];
+
+ png_fixed_point int_white_x, int_white_y, int_red_x, int_red_y,
+ int_green_x, int_green_y, int_blue_x, int_blue_y;
+
+ png_debug(1, "in png_write_cHRM");
+
+ int_white_x = (png_uint_32)(white_x * 100000.0 + 0.5);
+ int_white_y = (png_uint_32)(white_y * 100000.0 + 0.5);
+ int_red_x = (png_uint_32)(red_x * 100000.0 + 0.5);
+ int_red_y = (png_uint_32)(red_y * 100000.0 + 0.5);
+ int_green_x = (png_uint_32)(green_x * 100000.0 + 0.5);
+ int_green_y = (png_uint_32)(green_y * 100000.0 + 0.5);
+ int_blue_x = (png_uint_32)(blue_x * 100000.0 + 0.5);
+ int_blue_y = (png_uint_32)(blue_y * 100000.0 + 0.5);
+
+#ifdef PNG_CHECK_cHRM_SUPPORTED
+ if (png_check_cHRM_fixed(png_ptr, int_white_x, int_white_y,
+ int_red_x, int_red_y, int_green_x, int_green_y, int_blue_x, int_blue_y))
+#endif
+ {
+ /* Each value is saved in 1/100,000ths */
+
+ png_save_uint_32(buf, int_white_x);
+ png_save_uint_32(buf + 4, int_white_y);
+
+ png_save_uint_32(buf + 8, int_red_x);
+ png_save_uint_32(buf + 12, int_red_y);
+
+ png_save_uint_32(buf + 16, int_green_x);
+ png_save_uint_32(buf + 20, int_green_y);
+
+ png_save_uint_32(buf + 24, int_blue_x);
+ png_save_uint_32(buf + 28, int_blue_y);
+
+ png_write_chunk(png_ptr, (png_bytep)png_cHRM, buf, (png_size_t)32);
+ }
+}
+#endif
+#ifdef PNG_FIXED_POINT_SUPPORTED
+void /* PRIVATE */
+png_write_cHRM_fixed(png_structp png_ptr, png_fixed_point white_x,
+ png_fixed_point white_y, png_fixed_point red_x, png_fixed_point red_y,
+ png_fixed_point green_x, png_fixed_point green_y, png_fixed_point blue_x,
+ png_fixed_point blue_y)
+{
+ PNG_cHRM;
+ png_byte buf[32];
+
+ png_debug(1, "in png_write_cHRM");
+
+ /* Each value is saved in 1/100,000ths */
+#ifdef PNG_CHECK_cHRM_SUPPORTED
+ if (png_check_cHRM_fixed(png_ptr, white_x, white_y, red_x, red_y,
+ green_x, green_y, blue_x, blue_y))
+#endif
+ {
+ png_save_uint_32(buf, (png_uint_32)white_x);
+ png_save_uint_32(buf + 4, (png_uint_32)white_y);
+
+ png_save_uint_32(buf + 8, (png_uint_32)red_x);
+ png_save_uint_32(buf + 12, (png_uint_32)red_y);
+
+ png_save_uint_32(buf + 16, (png_uint_32)green_x);
+ png_save_uint_32(buf + 20, (png_uint_32)green_y);
+
+ png_save_uint_32(buf + 24, (png_uint_32)blue_x);
+ png_save_uint_32(buf + 28, (png_uint_32)blue_y);
+
+ png_write_chunk(png_ptr, (png_bytep)png_cHRM, buf, (png_size_t)32);
+ }
+}
+#endif
+#endif
+
+#ifdef PNG_WRITE_tRNS_SUPPORTED
+/* Write the tRNS chunk */
+void /* PRIVATE */
+png_write_tRNS(png_structp png_ptr, png_bytep trans_alpha, png_color_16p tran,
+ int num_trans, int color_type)
+{
+ PNG_tRNS;
+ png_byte buf[6];
+
+ png_debug(1, "in png_write_tRNS");
+
+ if (color_type == PNG_COLOR_TYPE_PALETTE)
+ {
+ if (num_trans <= 0 || num_trans > (int)png_ptr->num_palette)
+ {
+ png_warning(png_ptr, "Invalid number of transparent colors specified");
+ return;
+ }
+ /* Write the chunk out as it is */
+ png_write_chunk(png_ptr, (png_bytep)png_tRNS, trans_alpha,
+ (png_size_t)num_trans);
+ }
+ else if (color_type == PNG_COLOR_TYPE_GRAY)
+ {
+ /* One 16 bit value */
+ if (tran->gray >= (1 << png_ptr->bit_depth))
+ {
+ png_warning(png_ptr,
+ "Ignoring attempt to write tRNS chunk out-of-range for bit_depth");
+ return;
+ }
+ png_save_uint_16(buf, tran->gray);
+ png_write_chunk(png_ptr, (png_bytep)png_tRNS, buf, (png_size_t)2);
+ }
+ else if (color_type == PNG_COLOR_TYPE_RGB)
+ {
+ /* Three 16 bit values */
+ png_save_uint_16(buf, tran->red);
+ png_save_uint_16(buf + 2, tran->green);
+ png_save_uint_16(buf + 4, tran->blue);
+ if (png_ptr->bit_depth == 8 && (buf[0] | buf[2] | buf[4]))
+ {
+ png_warning(png_ptr,
+ "Ignoring attempt to write 16-bit tRNS chunk when bit_depth is 8");
+ return;
+ }
+ png_write_chunk(png_ptr, (png_bytep)png_tRNS, buf, (png_size_t)6);
+ }
+ else
+ {
+ png_warning(png_ptr, "Can't write tRNS with an alpha channel");
+ }
+}
+#endif
+
+#ifdef PNG_WRITE_bKGD_SUPPORTED
+/* Write the background chunk */
+void /* PRIVATE */
+png_write_bKGD(png_structp png_ptr, png_color_16p back, int color_type)
+{
+ PNG_bKGD;
+ png_byte buf[6];
+
+ png_debug(1, "in png_write_bKGD");
+
+ if (color_type == PNG_COLOR_TYPE_PALETTE)
+ {
+ if (
+#ifdef PNG_MNG_FEATURES_SUPPORTED
+ (png_ptr->num_palette ||
+ (!(png_ptr->mng_features_permitted & PNG_FLAG_MNG_EMPTY_PLTE))) &&
+#endif
+ back->index >= png_ptr->num_palette)
+ {
+ png_warning(png_ptr, "Invalid background palette index");
+ return;
+ }
+ buf[0] = back->index;
+ png_write_chunk(png_ptr, (png_bytep)png_bKGD, buf, (png_size_t)1);
+ }
+ else if (color_type & PNG_COLOR_MASK_COLOR)
+ {
+ png_save_uint_16(buf, back->red);
+ png_save_uint_16(buf + 2, back->green);
+ png_save_uint_16(buf + 4, back->blue);
+ if (png_ptr->bit_depth == 8 && (buf[0] | buf[2] | buf[4]))
+ {
+ png_warning(png_ptr,
+ "Ignoring attempt to write 16-bit bKGD chunk when bit_depth is 8");
+ return;
+ }
+ png_write_chunk(png_ptr, (png_bytep)png_bKGD, buf, (png_size_t)6);
+ }
+ else
+ {
+ if (back->gray >= (1 << png_ptr->bit_depth))
+ {
+ png_warning(png_ptr,
+ "Ignoring attempt to write bKGD chunk out-of-range for bit_depth");
+ return;
+ }
+ png_save_uint_16(buf, back->gray);
+ png_write_chunk(png_ptr, (png_bytep)png_bKGD, buf, (png_size_t)2);
+ }
+}
+#endif
+
+#ifdef PNG_WRITE_hIST_SUPPORTED
+/* Write the histogram */
+void /* PRIVATE */
+png_write_hIST(png_structp png_ptr, png_uint_16p hist, int num_hist)
+{
+ PNG_hIST;
+ int i;
+ png_byte buf[3];
+
+ png_debug(1, "in png_write_hIST");
+
+ if (num_hist > (int)png_ptr->num_palette)
+ {
+ png_debug2(3, "num_hist = %d, num_palette = %d", num_hist,
+ png_ptr->num_palette);
+ png_warning(png_ptr, "Invalid number of histogram entries specified");
+ return;
+ }
+
+ png_write_chunk_start(png_ptr, (png_bytep)png_hIST,
+ (png_uint_32)(num_hist * 2));
+ for (i = 0; i < num_hist; i++)
+ {
+ png_save_uint_16(buf, hist[i]);
+ png_write_chunk_data(png_ptr, buf, (png_size_t)2);
+ }
+ png_write_chunk_end(png_ptr);
+}
+#endif
+
+#if defined(PNG_WRITE_TEXT_SUPPORTED) || defined(PNG_WRITE_pCAL_SUPPORTED) || \
+ defined(PNG_WRITE_iCCP_SUPPORTED) || defined(PNG_WRITE_sPLT_SUPPORTED)
+/* Check that the tEXt or zTXt keyword is valid per PNG 1.0 specification,
+ * and if invalid, correct the keyword rather than discarding the entire
+ * chunk. The PNG 1.0 specification requires keywords 1-79 characters in
+ * length, forbids leading or trailing whitespace, multiple internal spaces,
+ * and the non-break space (0x80) from ISO 8859-1. Returns keyword length.
+ *
+ * The new_key is allocated to hold the corrected keyword and must be freed
+ * by the calling routine. This avoids problems with trying to write to
+ * static keywords without having to have duplicate copies of the strings.
+ */
+png_size_t /* PRIVATE */
+png_check_keyword(png_structp png_ptr, png_charp key, png_charpp new_key)
+{
+ png_size_t key_len;
+ png_charp kp, dp;
+ int kflag;
+ int kwarn=0;
+
+ png_debug(1, "in png_check_keyword");
+
+ *new_key = NULL;
+
+ if (key == NULL || (key_len = png_strlen(key)) == 0)
+ {
+ png_warning(png_ptr, "zero length keyword");
+ return ((png_size_t)0);
+ }
+
+ png_debug1(2, "Keyword to be checked is '%s'", key);
+
+ *new_key = (png_charp)png_malloc_warn(png_ptr, (png_uint_32)(key_len + 2));
+ if (*new_key == NULL)
+ {
+ png_warning(png_ptr, "Out of memory while procesing keyword");
+ return ((png_size_t)0);
+ }
+
+ /* Replace non-printing characters with a blank and print a warning */
+ for (kp = key, dp = *new_key; *kp != '\0'; kp++, dp++)
+ {
+ if ((png_byte)*kp < 0x20 ||
+ ((png_byte)*kp > 0x7E && (png_byte)*kp < 0xA1))
+ {
+#ifdef PNG_STDIO_SUPPORTED
+ char msg[40];
+
+ png_snprintf(msg, 40,
+ "invalid keyword character 0x%02X", (png_byte)*kp);
+ png_warning(png_ptr, msg);
+#else
+ png_warning(png_ptr, "invalid character in keyword");
+#endif
+ *dp = ' ';
+ }
+ else
+ {
+ *dp = *kp;
+ }
+ }
+ *dp = '\0';
+
+ /* Remove any trailing white space. */
+ kp = *new_key + key_len - 1;
+ if (*kp == ' ')
+ {
+ png_warning(png_ptr, "trailing spaces removed from keyword");
+
+ while (*kp == ' ')
+ {
+ *(kp--) = '\0';
+ key_len--;
+ }
+ }
+
+ /* Remove any leading white space. */
+ kp = *new_key;
+ if (*kp == ' ')
+ {
+ png_warning(png_ptr, "leading spaces removed from keyword");
+
+ while (*kp == ' ')
+ {
+ kp++;
+ key_len--;
+ }
+ }
+
+ png_debug1(2, "Checking for multiple internal spaces in '%s'", kp);
+
+ /* Remove multiple internal spaces. */
+ for (kflag = 0, dp = *new_key; *kp != '\0'; kp++)
+ {
+ if (*kp == ' ' && kflag == 0)
+ {
+ *(dp++) = *kp;
+ kflag = 1;
+ }
+ else if (*kp == ' ')
+ {
+ key_len--;
+ kwarn=1;
+ }
+ else
+ {
+ *(dp++) = *kp;
+ kflag = 0;
+ }
+ }
+ *dp = '\0';
+ if (kwarn)
+ png_warning(png_ptr, "extra interior spaces removed from keyword");
+
+ if (key_len == 0)
+ {
+ png_free(png_ptr, *new_key);
+ png_warning(png_ptr, "Zero length keyword");
+ }
+
+ if (key_len > 79)
+ {
+ png_warning(png_ptr, "keyword length must be 1 - 79 characters");
+ (*new_key)[79] = '\0';
+ key_len = 79;
+ }
+
+ return (key_len);
+}
+#endif
+
+#ifdef PNG_WRITE_tEXt_SUPPORTED
+/* Write a tEXt chunk */
+void /* PRIVATE */
+png_write_tEXt(png_structp png_ptr, png_charp key, png_charp text,
+ png_size_t text_len)
+{
+ PNG_tEXt;
+ png_size_t key_len;
+ png_charp new_key;
+
+ png_debug(1, "in png_write_tEXt");
+
+ if ((key_len = png_check_keyword(png_ptr, key, &new_key))==0)
+ return;
+
+ if (text == NULL || *text == '\0')
+ text_len = 0;
+ else
+ text_len = png_strlen(text);
+
+ /* Make sure we include the 0 after the key */
+ png_write_chunk_start(png_ptr, (png_bytep)png_tEXt,
+ (png_uint_32)(key_len + text_len + 1));
+ /*
+ * We leave it to the application to meet PNG-1.0 requirements on the
+ * contents of the text. PNG-1.0 through PNG-1.2 discourage the use of
+ * any non-Latin-1 characters except for NEWLINE. ISO PNG will forbid them.
+ * The NUL character is forbidden by PNG-1.0 through PNG-1.2 and ISO PNG.
+ */
+ png_write_chunk_data(png_ptr, (png_bytep)new_key,
+ (png_size_t)(key_len + 1));
+ if (text_len)
+ png_write_chunk_data(png_ptr, (png_bytep)text, (png_size_t)text_len);
+
+ png_write_chunk_end(png_ptr);
+ png_free(png_ptr, new_key);
+}
+#endif
+
+#ifdef PNG_WRITE_zTXt_SUPPORTED
+/* Write a compressed text chunk */
+void /* PRIVATE */
+png_write_zTXt(png_structp png_ptr, png_charp key, png_charp text,
+ png_size_t text_len, int compression)
+{
+ PNG_zTXt;
+ png_size_t key_len;
+ char buf[1];
+ png_charp new_key;
+ compression_state comp;
+
+ png_debug(1, "in png_write_zTXt");
+
+ comp.num_output_ptr = 0;
+ comp.max_output_ptr = 0;
+ comp.output_ptr = NULL;
+ comp.input = NULL;
+ comp.input_len = 0;
+
+ if ((key_len = png_check_keyword(png_ptr, key, &new_key))==0)
+ {
+ png_free(png_ptr, new_key);
+ return;
+ }
+
+ if (text == NULL || *text == '\0' || compression==PNG_TEXT_COMPRESSION_NONE)
+ {
+ png_write_tEXt(png_ptr, new_key, text, (png_size_t)0);
+ png_free(png_ptr, new_key);
+ return;
+ }
+
+ text_len = png_strlen(text);
+
+ /* Compute the compressed data; do it now for the length */
+ text_len = png_text_compress(png_ptr, text, text_len, compression,
+ &comp);
+
+ /* Write start of chunk */
+ png_write_chunk_start(png_ptr, (png_bytep)png_zTXt,
+ (png_uint_32)(key_len+text_len + 2));
+ /* Write key */
+ png_write_chunk_data(png_ptr, (png_bytep)new_key,
+ (png_size_t)(key_len + 1));
+ png_free(png_ptr, new_key);
+
+ buf[0] = (png_byte)compression;
+ /* Write compression */
+ png_write_chunk_data(png_ptr, (png_bytep)buf, (png_size_t)1);
+ /* Write the compressed data */
+ png_write_compressed_data_out(png_ptr, &comp);
+
+ /* Close the chunk */
+ png_write_chunk_end(png_ptr);
+}
+#endif
+
+#ifdef PNG_WRITE_iTXt_SUPPORTED
+/* Write an iTXt chunk */
+void /* PRIVATE */
+png_write_iTXt(png_structp png_ptr, int compression, png_charp key,
+ png_charp lang, png_charp lang_key, png_charp text)
+{
+ PNG_iTXt;
+ png_size_t lang_len, key_len, lang_key_len, text_len;
+ png_charp new_lang;
+ png_charp new_key = NULL;
+ png_byte cbuf[2];
+ compression_state comp;
+
+ png_debug(1, "in png_write_iTXt");
+
+ comp.num_output_ptr = 0;
+ comp.max_output_ptr = 0;
+ comp.output_ptr = NULL;
+ comp.input = NULL;
+
+ if ((key_len = png_check_keyword(png_ptr, key, &new_key))==0)
+ return;
+
+ if ((lang_len = png_check_keyword(png_ptr, lang, &new_lang))==0)
+ {
+ png_warning(png_ptr, "Empty language field in iTXt chunk");
+ new_lang = NULL;
+ lang_len = 0;
+ }
+
+ if (lang_key == NULL)
+ lang_key_len = 0;
+ else
+ lang_key_len = png_strlen(lang_key);
+
+ if (text == NULL)
+ text_len = 0;
+ else
+ text_len = png_strlen(text);
+
+ /* Compute the compressed data; do it now for the length */
+ text_len = png_text_compress(png_ptr, text, text_len, compression-2,
+ &comp);
+
+
+ /* Make sure we include the compression flag, the compression byte,
+ * and the NULs after the key, lang, and lang_key parts */
+
+ png_write_chunk_start(png_ptr, (png_bytep)png_iTXt,
+ (png_uint_32)(
+ 5 /* comp byte, comp flag, terminators for key, lang and lang_key */
+ + key_len
+ + lang_len
+ + lang_key_len
+ + text_len));
+
+ /* We leave it to the application to meet PNG-1.0 requirements on the
+ * contents of the text. PNG-1.0 through PNG-1.2 discourage the use of
+ * any non-Latin-1 characters except for NEWLINE. ISO PNG will forbid them.
+ * The NUL character is forbidden by PNG-1.0 through PNG-1.2 and ISO PNG.
+ */
+ png_write_chunk_data(png_ptr, (png_bytep)new_key,
+ (png_size_t)(key_len + 1));
+
+ /* Set the compression flag */
+ if (compression == PNG_ITXT_COMPRESSION_NONE || \
+ compression == PNG_TEXT_COMPRESSION_NONE)
+ cbuf[0] = 0;
+ else /* compression == PNG_ITXT_COMPRESSION_zTXt */
+ cbuf[0] = 1;
+ /* Set the compression method */
+ cbuf[1] = 0;
+ png_write_chunk_data(png_ptr, cbuf, (png_size_t)2);
+
+ cbuf[0] = 0;
+ png_write_chunk_data(png_ptr, (new_lang ? (png_bytep)new_lang : cbuf),
+ (png_size_t)(lang_len + 1));
+ png_write_chunk_data(png_ptr, (lang_key ? (png_bytep)lang_key : cbuf),
+ (png_size_t)(lang_key_len + 1));
+ png_write_compressed_data_out(png_ptr, &comp);
+
+ png_write_chunk_end(png_ptr);
+ png_free(png_ptr, new_key);
+ png_free(png_ptr, new_lang);
+}
+#endif
+
+#ifdef PNG_WRITE_oFFs_SUPPORTED
+/* Write the oFFs chunk */
+void /* PRIVATE */
+png_write_oFFs(png_structp png_ptr, png_int_32 x_offset, png_int_32 y_offset,
+ int unit_type)
+{
+ PNG_oFFs;
+ png_byte buf[9];
+
+ png_debug(1, "in png_write_oFFs");
+
+ if (unit_type >= PNG_OFFSET_LAST)
+ png_warning(png_ptr, "Unrecognized unit type for oFFs chunk");
+
+ png_save_int_32(buf, x_offset);
+ png_save_int_32(buf + 4, y_offset);
+ buf[8] = (png_byte)unit_type;
+
+ png_write_chunk(png_ptr, (png_bytep)png_oFFs, buf, (png_size_t)9);
+}
+#endif
+#ifdef PNG_WRITE_pCAL_SUPPORTED
+/* Write the pCAL chunk (described in the PNG extensions document) */
+void /* PRIVATE */
+png_write_pCAL(png_structp png_ptr, png_charp purpose, png_int_32 X0,
+ png_int_32 X1, int type, int nparams, png_charp units, png_charpp params)
+{
+ PNG_pCAL;
+ png_size_t purpose_len, units_len, total_len;
+ png_uint_32p params_len;
+ png_byte buf[10];
+ png_charp new_purpose;
+ int i;
+
+ png_debug1(1, "in png_write_pCAL (%d parameters)", nparams);
+
+ if (type >= PNG_EQUATION_LAST)
+ png_warning(png_ptr, "Unrecognized equation type for pCAL chunk");
+
+ purpose_len = png_check_keyword(png_ptr, purpose, &new_purpose) + 1;
+ png_debug1(3, "pCAL purpose length = %d", (int)purpose_len);
+ units_len = png_strlen(units) + (nparams == 0 ? 0 : 1);
+ png_debug1(3, "pCAL units length = %d", (int)units_len);
+ total_len = purpose_len + units_len + 10;
+
+ params_len = (png_uint_32p)png_malloc(png_ptr,
+ (png_alloc_size_t)(nparams * png_sizeof(png_uint_32)));
+
+ /* Find the length of each parameter, making sure we don't count the
+ null terminator for the last parameter. */
+ for (i = 0; i < nparams; i++)
+ {
+ params_len[i] = png_strlen(params[i]) + (i == nparams - 1 ? 0 : 1);
+ png_debug2(3, "pCAL parameter %d length = %lu", i,
+ (unsigned long) params_len[i]);
+ total_len += (png_size_t)params_len[i];
+ }
+
+ png_debug1(3, "pCAL total length = %d", (int)total_len);
+ png_write_chunk_start(png_ptr, (png_bytep)png_pCAL, (png_uint_32)total_len);
+ png_write_chunk_data(png_ptr, (png_bytep)new_purpose,
+ (png_size_t)purpose_len);
+ png_save_int_32(buf, X0);
+ png_save_int_32(buf + 4, X1);
+ buf[8] = (png_byte)type;
+ buf[9] = (png_byte)nparams;
+ png_write_chunk_data(png_ptr, buf, (png_size_t)10);
+ png_write_chunk_data(png_ptr, (png_bytep)units, (png_size_t)units_len);
+
+ png_free(png_ptr, new_purpose);
+
+ for (i = 0; i < nparams; i++)
+ {
+ png_write_chunk_data(png_ptr, (png_bytep)params[i],
+ (png_size_t)params_len[i]);
+ }
+
+ png_free(png_ptr, params_len);
+ png_write_chunk_end(png_ptr);
+}
+#endif
+
+#ifdef PNG_WRITE_sCAL_SUPPORTED
+/* Write the sCAL chunk */
+#if defined(PNG_FLOATING_POINT_SUPPORTED) && defined(PNG_STDIO_SUPPORTED)
+void /* PRIVATE */
+png_write_sCAL(png_structp png_ptr, int unit, double width, double height)
+{
+ PNG_sCAL;
+ char buf[64];
+ png_size_t total_len;
+
+ png_debug(1, "in png_write_sCAL");
+
+ buf[0] = (char)unit;
+ png_snprintf(buf + 1, 63, "%12.12e", width);
+ total_len = 1 + png_strlen(buf + 1) + 1;
+ png_snprintf(buf + total_len, 64-total_len, "%12.12e", height);
+ total_len += png_strlen(buf + total_len);
+
+ png_debug1(3, "sCAL total length = %u", (unsigned int)total_len);
+ png_write_chunk(png_ptr, (png_bytep)png_sCAL, (png_bytep)buf, total_len);
+}
+#else
+#ifdef PNG_FIXED_POINT_SUPPORTED
+void /* PRIVATE */
+png_write_sCAL_s(png_structp png_ptr, int unit, png_charp width,
+ png_charp height)
+{
+ PNG_sCAL;
+ png_byte buf[64];
+ png_size_t wlen, hlen, total_len;
+
+ png_debug(1, "in png_write_sCAL_s");
+
+ wlen = png_strlen(width);
+ hlen = png_strlen(height);
+ total_len = wlen + hlen + 2;
+ if (total_len > 64)
+ {
+ png_warning(png_ptr, "Can't write sCAL (buffer too small)");
+ return;
+ }
+
+ buf[0] = (png_byte)unit;
+ png_memcpy(buf + 1, width, wlen + 1); /* Append the '\0' here */
+ png_memcpy(buf + wlen + 2, height, hlen); /* Do NOT append the '\0' here */
+
+ png_debug1(3, "sCAL total length = %u", (unsigned int)total_len);
+ png_write_chunk(png_ptr, (png_bytep)png_sCAL, buf, total_len);
+}
+#endif
+#endif
+#endif
+
+#ifdef PNG_WRITE_pHYs_SUPPORTED
+/* Write the pHYs chunk */
+void /* PRIVATE */
+png_write_pHYs(png_structp png_ptr, png_uint_32 x_pixels_per_unit,
+ png_uint_32 y_pixels_per_unit,
+ int unit_type)
+{
+ PNG_pHYs;
+ png_byte buf[9];
+
+ png_debug(1, "in png_write_pHYs");
+
+ if (unit_type >= PNG_RESOLUTION_LAST)
+ png_warning(png_ptr, "Unrecognized unit type for pHYs chunk");
+
+ png_save_uint_32(buf, x_pixels_per_unit);
+ png_save_uint_32(buf + 4, y_pixels_per_unit);
+ buf[8] = (png_byte)unit_type;
+
+ png_write_chunk(png_ptr, (png_bytep)png_pHYs, buf, (png_size_t)9);
+}
+#endif
+
+#ifdef PNG_WRITE_tIME_SUPPORTED
+/* Write the tIME chunk. Use either png_convert_from_struct_tm()
+ * or png_convert_from_time_t(), or fill in the structure yourself.
+ */
+void /* PRIVATE */
+png_write_tIME(png_structp png_ptr, png_timep mod_time)
+{
+ PNG_tIME;
+ png_byte buf[7];
+
+ png_debug(1, "in png_write_tIME");
+
+ if (mod_time->month > 12 || mod_time->month < 1 ||
+ mod_time->day > 31 || mod_time->day < 1 ||
+ mod_time->hour > 23 || mod_time->second > 60)
+ {
+ png_warning(png_ptr, "Invalid time specified for tIME chunk");
+ return;
+ }
+
+ png_save_uint_16(buf, mod_time->year);
+ buf[2] = mod_time->month;
+ buf[3] = mod_time->day;
+ buf[4] = mod_time->hour;
+ buf[5] = mod_time->minute;
+ buf[6] = mod_time->second;
+
+ png_write_chunk(png_ptr, (png_bytep)png_tIME, buf, (png_size_t)7);
+}
+#endif
+
+/* Initializes the row writing capability of libpng */
+void /* PRIVATE */
+png_write_start_row(png_structp png_ptr)
+{
+#ifdef PNG_WRITE_INTERLACING_SUPPORTED
+ /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
+
+ /* Start of interlace block */
+ int png_pass_start[7] = {0, 4, 0, 2, 0, 1, 0};
+
+ /* Offset to next interlace block */
+ int png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
+
+ /* Start of interlace block in the y direction */
+ int png_pass_ystart[7] = {0, 0, 4, 0, 2, 0, 1};
+
+ /* Offset to next interlace block in the y direction */
+ int png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2};
+#endif
+
+ png_size_t buf_size;
+
+ png_debug(1, "in png_write_start_row");
+
+ buf_size = (png_size_t)(PNG_ROWBYTES(
+ png_ptr->usr_channels*png_ptr->usr_bit_depth, png_ptr->width) + 1);
+
+ /* Set up row buffer */
+ png_ptr->row_buf = (png_bytep)png_malloc(png_ptr,
+ (png_alloc_size_t)buf_size);
+ png_ptr->row_buf[0] = PNG_FILTER_VALUE_NONE;
+
+#ifdef PNG_WRITE_FILTER_SUPPORTED
+ /* Set up filtering buffer, if using this filter */
+ if (png_ptr->do_filter & PNG_FILTER_SUB)
+ {
+ png_ptr->sub_row = (png_bytep)png_malloc(png_ptr,
+ (png_alloc_size_t)(png_ptr->rowbytes + 1));
+ png_ptr->sub_row[0] = PNG_FILTER_VALUE_SUB;
+ }
+
+ /* We only need to keep the previous row if we are using one of these. */
+ if (png_ptr->do_filter & (PNG_FILTER_AVG | PNG_FILTER_UP | PNG_FILTER_PAETH))
+ {
+ /* Set up previous row buffer */
+ png_ptr->prev_row = (png_bytep)png_calloc(png_ptr,
+ (png_alloc_size_t)buf_size);
+
+ if (png_ptr->do_filter & PNG_FILTER_UP)
+ {
+ png_ptr->up_row = (png_bytep)png_malloc(png_ptr,
+ (png_size_t)(png_ptr->rowbytes + 1));
+ png_ptr->up_row[0] = PNG_FILTER_VALUE_UP;
+ }
+
+ if (png_ptr->do_filter & PNG_FILTER_AVG)
+ {
+ png_ptr->avg_row = (png_bytep)png_malloc(png_ptr,
+ (png_alloc_size_t)(png_ptr->rowbytes + 1));
+ png_ptr->avg_row[0] = PNG_FILTER_VALUE_AVG;
+ }
+
+ if (png_ptr->do_filter & PNG_FILTER_PAETH)
+ {
+ png_ptr->paeth_row = (png_bytep)png_malloc(png_ptr,
+ (png_size_t)(png_ptr->rowbytes + 1));
+ png_ptr->paeth_row[0] = PNG_FILTER_VALUE_PAETH;
+ }
+ }
+#endif /* PNG_WRITE_FILTER_SUPPORTED */
+
+#ifdef PNG_WRITE_INTERLACING_SUPPORTED
+ /* If interlaced, we need to set up width and height of pass */
+ if (png_ptr->interlaced)
+ {
+ if (!(png_ptr->transformations & PNG_INTERLACE))
+ {
+ png_ptr->num_rows = (png_ptr->height + png_pass_yinc[0] - 1 -
+ png_pass_ystart[0]) / png_pass_yinc[0];
+ png_ptr->usr_width = (png_ptr->width + png_pass_inc[0] - 1 -
+ png_pass_start[0]) / png_pass_inc[0];
+ }
+ else
+ {
+ png_ptr->num_rows = png_ptr->height;
+ png_ptr->usr_width = png_ptr->width;
+ }
+ }
+ else
+#endif
+ {
+ png_ptr->num_rows = png_ptr->height;
+ png_ptr->usr_width = png_ptr->width;
+ }
+ png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size;
+ png_ptr->zstream.next_out = png_ptr->zbuf;
+}
+
+/* Internal use only. Called when finished processing a row of data. */
+void /* PRIVATE */
+png_write_finish_row(png_structp png_ptr)
+{
+#ifdef PNG_WRITE_INTERLACING_SUPPORTED
+ /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
+
+ /* Start of interlace block */
+ int png_pass_start[7] = {0, 4, 0, 2, 0, 1, 0};
+
+ /* Offset to next interlace block */
+ int png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
+
+ /* Start of interlace block in the y direction */
+ int png_pass_ystart[7] = {0, 0, 4, 0, 2, 0, 1};
+
+ /* Offset to next interlace block in the y direction */
+ int png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2};
+#endif
+
+ int ret;
+
+ png_debug(1, "in png_write_finish_row");
+
+ /* Next row */
+ png_ptr->row_number++;
+
+ /* See if we are done */
+ if (png_ptr->row_number < png_ptr->num_rows)
+ return;
+
+#ifdef PNG_WRITE_INTERLACING_SUPPORTED
+ /* If interlaced, go to next pass */
+ if (png_ptr->interlaced)
+ {
+ png_ptr->row_number = 0;
+ if (png_ptr->transformations & PNG_INTERLACE)
+ {
+ png_ptr->pass++;
+ }
+ else
+ {
+ /* Loop until we find a non-zero width or height pass */
+ do
+ {
+ png_ptr->pass++;
+ if (png_ptr->pass >= 7)
+ break;
+ png_ptr->usr_width = (png_ptr->width +
+ png_pass_inc[png_ptr->pass] - 1 -
+ png_pass_start[png_ptr->pass]) /
+ png_pass_inc[png_ptr->pass];
+ png_ptr->num_rows = (png_ptr->height +
+ png_pass_yinc[png_ptr->pass] - 1 -
+ png_pass_ystart[png_ptr->pass]) /
+ png_pass_yinc[png_ptr->pass];
+ if (png_ptr->transformations & PNG_INTERLACE)
+ break;
+ } while (png_ptr->usr_width == 0 || png_ptr->num_rows == 0);
+
+ }
+
+ /* Reset the row above the image for the next pass */
+ if (png_ptr->pass < 7)
+ {
+ if (png_ptr->prev_row != NULL)
+ png_memset(png_ptr->prev_row, 0,
+ (png_size_t)(PNG_ROWBYTES(png_ptr->usr_channels*
+ png_ptr->usr_bit_depth, png_ptr->width)) + 1);
+ return;
+ }
+ }
+#endif
+
+ /* If we get here, we've just written the last row, so we need
+ to flush the compressor */
+ do
+ {
+ /* Tell the compressor we are done */
+ ret = deflate(&png_ptr->zstream, Z_FINISH);
+ /* Check for an error */
+ if (ret == Z_OK)
+ {
+ /* Check to see if we need more room */
+ if (!(png_ptr->zstream.avail_out))
+ {
+ png_write_IDAT(png_ptr, png_ptr->zbuf, png_ptr->zbuf_size);
+ png_ptr->zstream.next_out = png_ptr->zbuf;
+ png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size;
+ }
+ }
+ else if (ret != Z_STREAM_END)
+ {
+ if (png_ptr->zstream.msg != NULL)
+ png_error(png_ptr, png_ptr->zstream.msg);
+ else
+ png_error(png_ptr, "zlib error");
+ }
+ } while (ret != Z_STREAM_END);
+
+ /* Write any extra space */
+ if (png_ptr->zstream.avail_out < png_ptr->zbuf_size)
+ {
+ png_write_IDAT(png_ptr, png_ptr->zbuf, png_ptr->zbuf_size -
+ png_ptr->zstream.avail_out);
+ }
+
+ deflateReset(&png_ptr->zstream);
+ png_ptr->zstream.data_type = Z_BINARY;
+}
+
+#ifdef PNG_WRITE_INTERLACING_SUPPORTED
+/* Pick out the correct pixels for the interlace pass.
+ * The basic idea here is to go through the row with a source
+ * pointer and a destination pointer (sp and dp), and copy the
+ * correct pixels for the pass. As the row gets compacted,
+ * sp will always be >= dp, so we should never overwrite anything.
+ * See the default: case for the easiest code to understand.
+ */
+void /* PRIVATE */
+png_do_write_interlace(png_row_infop row_info, png_bytep row, int pass)
+{
+ /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
+
+ /* Start of interlace block */
+ int png_pass_start[7] = {0, 4, 0, 2, 0, 1, 0};
+
+ /* Offset to next interlace block */
+ int png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
+
+ png_debug(1, "in png_do_write_interlace");
+
+ /* We don't have to do anything on the last pass (6) */
+ if (pass < 6)
+ {
+ /* Each pixel depth is handled separately */
+ switch (row_info->pixel_depth)
+ {
+ case 1:
+ {
+ png_bytep sp;
+ png_bytep dp;
+ int shift;
+ int d;
+ int value;
+ png_uint_32 i;
+ png_uint_32 row_width = row_info->width;
+
+ dp = row;
+ d = 0;
+ shift = 7;
+ for (i = png_pass_start[pass]; i < row_width;
+ i += png_pass_inc[pass])
+ {
+ sp = row + (png_size_t)(i >> 3);
+ value = (int)(*sp >> (7 - (int)(i & 0x07))) & 0x01;
+ d |= (value << shift);
+
+ if (shift == 0)
+ {
+ shift = 7;
+ *dp++ = (png_byte)d;
+ d = 0;
+ }
+ else
+ shift--;
+
+ }
+ if (shift != 7)
+ *dp = (png_byte)d;
+ break;
+ }
+ case 2:
+ {
+ png_bytep sp;
+ png_bytep dp;
+ int shift;
+ int d;
+ int value;
+ png_uint_32 i;
+ png_uint_32 row_width = row_info->width;
+
+ dp = row;
+ shift = 6;
+ d = 0;
+ for (i = png_pass_start[pass]; i < row_width;
+ i += png_pass_inc[pass])
+ {
+ sp = row + (png_size_t)(i >> 2);
+ value = (*sp >> ((3 - (int)(i & 0x03)) << 1)) & 0x03;
+ d |= (value << shift);
+
+ if (shift == 0)
+ {
+ shift = 6;
+ *dp++ = (png_byte)d;
+ d = 0;
+ }
+ else
+ shift -= 2;
+ }
+ if (shift != 6)
+ *dp = (png_byte)d;
+ break;
+ }
+ case 4:
+ {
+ png_bytep sp;
+ png_bytep dp;
+ int shift;
+ int d;
+ int value;
+ png_uint_32 i;
+ png_uint_32 row_width = row_info->width;
+
+ dp = row;
+ shift = 4;
+ d = 0;
+ for (i = png_pass_start[pass]; i < row_width;
+ i += png_pass_inc[pass])
+ {
+ sp = row + (png_size_t)(i >> 1);
+ value = (*sp >> ((1 - (int)(i & 0x01)) << 2)) & 0x0f;
+ d |= (value << shift);
+
+ if (shift == 0)
+ {
+ shift = 4;
+ *dp++ = (png_byte)d;
+ d = 0;
+ }
+ else
+ shift -= 4;
+ }
+ if (shift != 4)
+ *dp = (png_byte)d;
+ break;
+ }
+ default:
+ {
+ png_bytep sp;
+ png_bytep dp;
+ png_uint_32 i;
+ png_uint_32 row_width = row_info->width;
+ png_size_t pixel_bytes;
+
+ /* Start at the beginning */
+ dp = row;
+ /* Find out how many bytes each pixel takes up */
+ pixel_bytes = (row_info->pixel_depth >> 3);
+ /* Loop through the row, only looking at the pixels that
+ matter */
+ for (i = png_pass_start[pass]; i < row_width;
+ i += png_pass_inc[pass])
+ {
+ /* Find out where the original pixel is */
+ sp = row + (png_size_t)i * pixel_bytes;
+ /* Move the pixel */
+ if (dp != sp)
+ png_memcpy(dp, sp, pixel_bytes);
+ /* Next pixel */
+ dp += pixel_bytes;
+ }
+ break;
+ }
+ }
+ /* Set new row width */
+ row_info->width = (row_info->width +
+ png_pass_inc[pass] - 1 -
+ png_pass_start[pass]) /
+ png_pass_inc[pass];
+ row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth,
+ row_info->width);
+ }
+}
+#endif
+
+/* This filters the row, chooses which filter to use, if it has not already
+ * been specified by the application, and then writes the row out with the
+ * chosen filter.
+ */
+#define PNG_MAXSUM (((png_uint_32)(-1)) >> 1)
+#define PNG_HISHIFT 10
+#define PNG_LOMASK ((png_uint_32)0xffffL)
+#define PNG_HIMASK ((png_uint_32)(~PNG_LOMASK >> PNG_HISHIFT))
+void /* PRIVATE */
+png_write_find_filter(png_structp png_ptr, png_row_infop row_info)
+{
+ png_bytep best_row;
+#ifdef PNG_WRITE_FILTER_SUPPORTED
+ png_bytep prev_row, row_buf;
+ png_uint_32 mins, bpp;
+ png_byte filter_to_do = png_ptr->do_filter;
+ png_uint_32 row_bytes = row_info->rowbytes;
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
+ int num_p_filters = (int)png_ptr->num_prev_filters;
+#endif
+
+ png_debug(1, "in png_write_find_filter");
+
+#ifndef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
+ if (png_ptr->row_number == 0 && filter_to_do == PNG_ALL_FILTERS)
+ {
+ /* These will never be selected so we need not test them. */
+ filter_to_do &= ~(PNG_FILTER_UP | PNG_FILTER_PAETH);
+ }
+#endif
+
+ /* Find out how many bytes offset each pixel is */
+ bpp = (row_info->pixel_depth + 7) >> 3;
+
+ prev_row = png_ptr->prev_row;
+#endif
+ best_row = png_ptr->row_buf;
+#ifdef PNG_WRITE_FILTER_SUPPORTED
+ row_buf = best_row;
+ mins = PNG_MAXSUM;
+
+ /* The prediction method we use is to find which method provides the
+ * smallest value when summing the absolute values of the distances
+ * from zero, using anything >= 128 as negative numbers. This is known
+ * as the "minimum sum of absolute differences" heuristic. Other
+ * heuristics are the "weighted minimum sum of absolute differences"
+ * (experimental and can in theory improve compression), and the "zlib
+ * predictive" method (not implemented yet), which does test compressions
+ * of lines using different filter methods, and then chooses the
+ * (series of) filter(s) that give minimum compressed data size (VERY
+ * computationally expensive).
+ *
+ * GRR 980525: consider also
+ * (1) minimum sum of absolute differences from running average (i.e.,
+ * keep running sum of non-absolute differences & count of bytes)
+ * [track dispersion, too? restart average if dispersion too large?]
+ * (1b) minimum sum of absolute differences from sliding average, probably
+ * with window size <= deflate window (usually 32K)
+ * (2) minimum sum of squared differences from zero or running average
+ * (i.e., ~ root-mean-square approach)
+ */
+
+
+ /* We don't need to test the 'no filter' case if this is the only filter
+ * that has been chosen, as it doesn't actually do anything to the data.
+ */
+ if ((filter_to_do & PNG_FILTER_NONE) &&
+ filter_to_do != PNG_FILTER_NONE)
+ {
+ png_bytep rp;
+ png_uint_32 sum = 0;
+ png_uint_32 i;
+ int v;
+
+ for (i = 0, rp = row_buf + 1; i < row_bytes; i++, rp++)
+ {
+ v = *rp;
+ sum += (v < 128) ? v : 256 - v;
+ }
+
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
+ if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
+ {
+ png_uint_32 sumhi, sumlo;
+ int j;
+ sumlo = sum & PNG_LOMASK;
+ sumhi = (sum >> PNG_HISHIFT) & PNG_HIMASK; /* Gives us some footroom */
+
+ /* Reduce the sum if we match any of the previous rows */
+ for (j = 0; j < num_p_filters; j++)
+ {
+ if (png_ptr->prev_filters[j] == PNG_FILTER_VALUE_NONE)
+ {
+ sumlo = (sumlo * png_ptr->filter_weights[j]) >>
+ PNG_WEIGHT_SHIFT;
+ sumhi = (sumhi * png_ptr->filter_weights[j]) >>
+ PNG_WEIGHT_SHIFT;
+ }
+ }
+
+ /* Factor in the cost of this filter (this is here for completeness,
+ * but it makes no sense to have a "cost" for the NONE filter, as
+ * it has the minimum possible computational cost - none).
+ */
+ sumlo = (sumlo * png_ptr->filter_costs[PNG_FILTER_VALUE_NONE]) >>
+ PNG_COST_SHIFT;
+ sumhi = (sumhi * png_ptr->filter_costs[PNG_FILTER_VALUE_NONE]) >>
+ PNG_COST_SHIFT;
+
+ if (sumhi > PNG_HIMASK)
+ sum = PNG_MAXSUM;
+ else
+ sum = (sumhi << PNG_HISHIFT) + sumlo;
+ }
+#endif
+ mins = sum;
+ }
+
+ /* Sub filter */
+ if (filter_to_do == PNG_FILTER_SUB)
+ /* It's the only filter so no testing is needed */
+ {
+ png_bytep rp, lp, dp;
+ png_uint_32 i;
+ for (i = 0, rp = row_buf + 1, dp = png_ptr->sub_row + 1; i < bpp;
+ i++, rp++, dp++)
+ {
+ *dp = *rp;
+ }
+ for (lp = row_buf + 1; i < row_bytes;
+ i++, rp++, lp++, dp++)
+ {
+ *dp = (png_byte)(((int)*rp - (int)*lp) & 0xff);
+ }
+ best_row = png_ptr->sub_row;
+ }
+
+ else if (filter_to_do & PNG_FILTER_SUB)
+ {
+ png_bytep rp, dp, lp;
+ png_uint_32 sum = 0, lmins = mins;
+ png_uint_32 i;
+ int v;
+
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
+ /* We temporarily increase the "minimum sum" by the factor we
+ * would reduce the sum of this filter, so that we can do the
+ * early exit comparison without scaling the sum each time.
+ */
+ if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
+ {
+ int j;
+ png_uint_32 lmhi, lmlo;
+ lmlo = lmins & PNG_LOMASK;
+ lmhi = (lmins >> PNG_HISHIFT) & PNG_HIMASK;
+
+ for (j = 0; j < num_p_filters; j++)
+ {
+ if (png_ptr->prev_filters[j] == PNG_FILTER_VALUE_SUB)
+ {
+ lmlo = (lmlo * png_ptr->inv_filter_weights[j]) >>
+ PNG_WEIGHT_SHIFT;
+ lmhi = (lmhi * png_ptr->inv_filter_weights[j]) >>
+ PNG_WEIGHT_SHIFT;
+ }
+ }
+
+ lmlo = (lmlo * png_ptr->inv_filter_costs[PNG_FILTER_VALUE_SUB]) >>
+ PNG_COST_SHIFT;
+ lmhi = (lmhi * png_ptr->inv_filter_costs[PNG_FILTER_VALUE_SUB]) >>
+ PNG_COST_SHIFT;
+
+ if (lmhi > PNG_HIMASK)
+ lmins = PNG_MAXSUM;
+ else
+ lmins = (lmhi << PNG_HISHIFT) + lmlo;
+ }
+#endif
+
+ for (i = 0, rp = row_buf + 1, dp = png_ptr->sub_row + 1; i < bpp;
+ i++, rp++, dp++)
+ {
+ v = *dp = *rp;
+
+ sum += (v < 128) ? v : 256 - v;
+ }
+ for (lp = row_buf + 1; i < row_bytes;
+ i++, rp++, lp++, dp++)
+ {
+ v = *dp = (png_byte)(((int)*rp - (int)*lp) & 0xff);
+
+ sum += (v < 128) ? v : 256 - v;
+
+ if (sum > lmins) /* We are already worse, don't continue. */
+ break;
+ }
+
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
+ if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
+ {
+ int j;
+ png_uint_32 sumhi, sumlo;
+ sumlo = sum & PNG_LOMASK;
+ sumhi = (sum >> PNG_HISHIFT) & PNG_HIMASK;
+
+ for (j = 0; j < num_p_filters; j++)
+ {
+ if (png_ptr->prev_filters[j] == PNG_FILTER_VALUE_SUB)
+ {
+ sumlo = (sumlo * png_ptr->inv_filter_weights[j]) >>
+ PNG_WEIGHT_SHIFT;
+ sumhi = (sumhi * png_ptr->inv_filter_weights[j]) >>
+ PNG_WEIGHT_SHIFT;
+ }
+ }
+
+ sumlo = (sumlo * png_ptr->inv_filter_costs[PNG_FILTER_VALUE_SUB]) >>
+ PNG_COST_SHIFT;
+ sumhi = (sumhi * png_ptr->inv_filter_costs[PNG_FILTER_VALUE_SUB]) >>
+ PNG_COST_SHIFT;
+
+ if (sumhi > PNG_HIMASK)
+ sum = PNG_MAXSUM;
+ else
+ sum = (sumhi << PNG_HISHIFT) + sumlo;
+ }
+#endif
+
+ if (sum < mins)
+ {
+ mins = sum;
+ best_row = png_ptr->sub_row;
+ }
+ }
+
+ /* Up filter */
+ if (filter_to_do == PNG_FILTER_UP)
+ {
+ png_bytep rp, dp, pp;
+ png_uint_32 i;
+
+ for (i = 0, rp = row_buf + 1, dp = png_ptr->up_row + 1,
+ pp = prev_row + 1; i < row_bytes;
+ i++, rp++, pp++, dp++)
+ {
+ *dp = (png_byte)(((int)*rp - (int)*pp) & 0xff);
+ }
+ best_row = png_ptr->up_row;
+ }
+
+ else if (filter_to_do & PNG_FILTER_UP)
+ {
+ png_bytep rp, dp, pp;
+ png_uint_32 sum = 0, lmins = mins;
+ png_uint_32 i;
+ int v;
+
+
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
+ if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
+ {
+ int j;
+ png_uint_32 lmhi, lmlo;
+ lmlo = lmins & PNG_LOMASK;
+ lmhi = (lmins >> PNG_HISHIFT) & PNG_HIMASK;
+
+ for (j = 0; j < num_p_filters; j++)
+ {
+ if (png_ptr->prev_filters[j] == PNG_FILTER_VALUE_UP)
+ {
+ lmlo = (lmlo * png_ptr->inv_filter_weights[j]) >>
+ PNG_WEIGHT_SHIFT;
+ lmhi = (lmhi * png_ptr->inv_filter_weights[j]) >>
+ PNG_WEIGHT_SHIFT;
+ }
+ }
+
+ lmlo = (lmlo * png_ptr->inv_filter_costs[PNG_FILTER_VALUE_UP]) >>
+ PNG_COST_SHIFT;
+ lmhi = (lmhi * png_ptr->inv_filter_costs[PNG_FILTER_VALUE_UP]) >>
+ PNG_COST_SHIFT;
+
+ if (lmhi > PNG_HIMASK)
+ lmins = PNG_MAXSUM;
+ else
+ lmins = (lmhi << PNG_HISHIFT) + lmlo;
+ }
+#endif
+
+ for (i = 0, rp = row_buf + 1, dp = png_ptr->up_row + 1,
+ pp = prev_row + 1; i < row_bytes; i++)
+ {
+ v = *dp++ = (png_byte)(((int)*rp++ - (int)*pp++) & 0xff);
+
+ sum += (v < 128) ? v : 256 - v;
+
+ if (sum > lmins) /* We are already worse, don't continue. */
+ break;
+ }
+
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
+ if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
+ {
+ int j;
+ png_uint_32 sumhi, sumlo;
+ sumlo = sum & PNG_LOMASK;
+ sumhi = (sum >> PNG_HISHIFT) & PNG_HIMASK;
+
+ for (j = 0; j < num_p_filters; j++)
+ {
+ if (png_ptr->prev_filters[j] == PNG_FILTER_VALUE_UP)
+ {
+ sumlo = (sumlo * png_ptr->filter_weights[j]) >>
+ PNG_WEIGHT_SHIFT;
+ sumhi = (sumhi * png_ptr->filter_weights[j]) >>
+ PNG_WEIGHT_SHIFT;
+ }
+ }
+
+ sumlo = (sumlo * png_ptr->filter_costs[PNG_FILTER_VALUE_UP]) >>
+ PNG_COST_SHIFT;
+ sumhi = (sumhi * png_ptr->filter_costs[PNG_FILTER_VALUE_UP]) >>
+ PNG_COST_SHIFT;
+
+ if (sumhi > PNG_HIMASK)
+ sum = PNG_MAXSUM;
+ else
+ sum = (sumhi << PNG_HISHIFT) + sumlo;
+ }
+#endif
+
+ if (sum < mins)
+ {
+ mins = sum;
+ best_row = png_ptr->up_row;
+ }
+ }
+
+ /* Avg filter */
+ if (filter_to_do == PNG_FILTER_AVG)
+ {
+ png_bytep rp, dp, pp, lp;
+ png_uint_32 i;
+ for (i = 0, rp = row_buf + 1, dp = png_ptr->avg_row + 1,
+ pp = prev_row + 1; i < bpp; i++)
+ {
+ *dp++ = (png_byte)(((int)*rp++ - ((int)*pp++ / 2)) & 0xff);
+ }
+ for (lp = row_buf + 1; i < row_bytes; i++)
+ {
+ *dp++ = (png_byte)(((int)*rp++ - (((int)*pp++ + (int)*lp++) / 2))
+ & 0xff);
+ }
+ best_row = png_ptr->avg_row;
+ }
+
+ else if (filter_to_do & PNG_FILTER_AVG)
+ {
+ png_bytep rp, dp, pp, lp;
+ png_uint_32 sum = 0, lmins = mins;
+ png_uint_32 i;
+ int v;
+
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
+ if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
+ {
+ int j;
+ png_uint_32 lmhi, lmlo;
+ lmlo = lmins & PNG_LOMASK;
+ lmhi = (lmins >> PNG_HISHIFT) & PNG_HIMASK;
+
+ for (j = 0; j < num_p_filters; j++)
+ {
+ if (png_ptr->prev_filters[j] == PNG_FILTER_VALUE_AVG)
+ {
+ lmlo = (lmlo * png_ptr->inv_filter_weights[j]) >>
+ PNG_WEIGHT_SHIFT;
+ lmhi = (lmhi * png_ptr->inv_filter_weights[j]) >>
+ PNG_WEIGHT_SHIFT;
+ }
+ }
+
+ lmlo = (lmlo * png_ptr->inv_filter_costs[PNG_FILTER_VALUE_AVG]) >>
+ PNG_COST_SHIFT;
+ lmhi = (lmhi * png_ptr->inv_filter_costs[PNG_FILTER_VALUE_AVG]) >>
+ PNG_COST_SHIFT;
+
+ if (lmhi > PNG_HIMASK)
+ lmins = PNG_MAXSUM;
+ else
+ lmins = (lmhi << PNG_HISHIFT) + lmlo;
+ }
+#endif
+
+ for (i = 0, rp = row_buf + 1, dp = png_ptr->avg_row + 1,
+ pp = prev_row + 1; i < bpp; i++)
+ {
+ v = *dp++ = (png_byte)(((int)*rp++ - ((int)*pp++ / 2)) & 0xff);
+
+ sum += (v < 128) ? v : 256 - v;
+ }
+ for (lp = row_buf + 1; i < row_bytes; i++)
+ {
+ v = *dp++ =
+ (png_byte)(((int)*rp++ - (((int)*pp++ + (int)*lp++) / 2)) & 0xff);
+
+ sum += (v < 128) ? v : 256 - v;
+
+ if (sum > lmins) /* We are already worse, don't continue. */
+ break;
+ }
+
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
+ if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
+ {
+ int j;
+ png_uint_32 sumhi, sumlo;
+ sumlo = sum & PNG_LOMASK;
+ sumhi = (sum >> PNG_HISHIFT) & PNG_HIMASK;
+
+ for (j = 0; j < num_p_filters; j++)
+ {
+ if (png_ptr->prev_filters[j] == PNG_FILTER_VALUE_NONE)
+ {
+ sumlo = (sumlo * png_ptr->filter_weights[j]) >>
+ PNG_WEIGHT_SHIFT;
+ sumhi = (sumhi * png_ptr->filter_weights[j]) >>
+ PNG_WEIGHT_SHIFT;
+ }
+ }
+
+ sumlo = (sumlo * png_ptr->filter_costs[PNG_FILTER_VALUE_AVG]) >>
+ PNG_COST_SHIFT;
+ sumhi = (sumhi * png_ptr->filter_costs[PNG_FILTER_VALUE_AVG]) >>
+ PNG_COST_SHIFT;
+
+ if (sumhi > PNG_HIMASK)
+ sum = PNG_MAXSUM;
+ else
+ sum = (sumhi << PNG_HISHIFT) + sumlo;
+ }
+#endif
+
+ if (sum < mins)
+ {
+ mins = sum;
+ best_row = png_ptr->avg_row;
+ }
+ }
+
+ /* Paeth filter */
+ if (filter_to_do == PNG_FILTER_PAETH)
+ {
+ png_bytep rp, dp, pp, cp, lp;
+ png_uint_32 i;
+ for (i = 0, rp = row_buf + 1, dp = png_ptr->paeth_row + 1,
+ pp = prev_row + 1; i < bpp; i++)
+ {
+ *dp++ = (png_byte)(((int)*rp++ - (int)*pp++) & 0xff);
+ }
+
+ for (lp = row_buf + 1, cp = prev_row + 1; i < row_bytes; i++)
+ {
+ int a, b, c, pa, pb, pc, p;
+
+ b = *pp++;
+ c = *cp++;
+ a = *lp++;
+
+ p = b - c;
+ pc = a - c;
+
+#ifdef PNG_USE_ABS
+ pa = abs(p);
+ pb = abs(pc);
+ pc = abs(p + pc);
+#else
+ pa = p < 0 ? -p : p;
+ pb = pc < 0 ? -pc : pc;
+ pc = (p + pc) < 0 ? -(p + pc) : p + pc;
+#endif
+
+ p = (pa <= pb && pa <=pc) ? a : (pb <= pc) ? b : c;
+
+ *dp++ = (png_byte)(((int)*rp++ - p) & 0xff);
+ }
+ best_row = png_ptr->paeth_row;
+ }
+
+ else if (filter_to_do & PNG_FILTER_PAETH)
+ {
+ png_bytep rp, dp, pp, cp, lp;
+ png_uint_32 sum = 0, lmins = mins;
+ png_uint_32 i;
+ int v;
+
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
+ if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
+ {
+ int j;
+ png_uint_32 lmhi, lmlo;
+ lmlo = lmins & PNG_LOMASK;
+ lmhi = (lmins >> PNG_HISHIFT) & PNG_HIMASK;
+
+ for (j = 0; j < num_p_filters; j++)
+ {
+ if (png_ptr->prev_filters[j] == PNG_FILTER_VALUE_PAETH)
+ {
+ lmlo = (lmlo * png_ptr->inv_filter_weights[j]) >>
+ PNG_WEIGHT_SHIFT;
+ lmhi = (lmhi * png_ptr->inv_filter_weights[j]) >>
+ PNG_WEIGHT_SHIFT;
+ }
+ }
+
+ lmlo = (lmlo * png_ptr->inv_filter_costs[PNG_FILTER_VALUE_PAETH]) >>
+ PNG_COST_SHIFT;
+ lmhi = (lmhi * png_ptr->inv_filter_costs[PNG_FILTER_VALUE_PAETH]) >>
+ PNG_COST_SHIFT;
+
+ if (lmhi > PNG_HIMASK)
+ lmins = PNG_MAXSUM;
+ else
+ lmins = (lmhi << PNG_HISHIFT) + lmlo;
+ }
+#endif
+
+ for (i = 0, rp = row_buf + 1, dp = png_ptr->paeth_row + 1,
+ pp = prev_row + 1; i < bpp; i++)
+ {
+ v = *dp++ = (png_byte)(((int)*rp++ - (int)*pp++) & 0xff);
+
+ sum += (v < 128) ? v : 256 - v;
+ }
+
+ for (lp = row_buf + 1, cp = prev_row + 1; i < row_bytes; i++)
+ {
+ int a, b, c, pa, pb, pc, p;
+
+ b = *pp++;
+ c = *cp++;
+ a = *lp++;
+
+#ifndef PNG_SLOW_PAETH
+ p = b - c;
+ pc = a - c;
+#ifdef PNG_USE_ABS
+ pa = abs(p);
+ pb = abs(pc);
+ pc = abs(p + pc);
+#else
+ pa = p < 0 ? -p : p;
+ pb = pc < 0 ? -pc : pc;
+ pc = (p + pc) < 0 ? -(p + pc) : p + pc;
+#endif
+ p = (pa <= pb && pa <=pc) ? a : (pb <= pc) ? b : c;
+#else /* PNG_SLOW_PAETH */
+ p = a + b - c;
+ pa = abs(p - a);
+ pb = abs(p - b);
+ pc = abs(p - c);
+ if (pa <= pb && pa <= pc)
+ p = a;
+ else if (pb <= pc)
+ p = b;
+ else
+ p = c;
+#endif /* PNG_SLOW_PAETH */
+
+ v = *dp++ = (png_byte)(((int)*rp++ - p) & 0xff);
+
+ sum += (v < 128) ? v : 256 - v;
+
+ if (sum > lmins) /* We are already worse, don't continue. */
+ break;
+ }
+
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
+ if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
+ {
+ int j;
+ png_uint_32 sumhi, sumlo;
+ sumlo = sum & PNG_LOMASK;
+ sumhi = (sum >> PNG_HISHIFT) & PNG_HIMASK;
+
+ for (j = 0; j < num_p_filters; j++)
+ {
+ if (png_ptr->prev_filters[j] == PNG_FILTER_VALUE_PAETH)
+ {
+ sumlo = (sumlo * png_ptr->filter_weights[j]) >>
+ PNG_WEIGHT_SHIFT;
+ sumhi = (sumhi * png_ptr->filter_weights[j]) >>
+ PNG_WEIGHT_SHIFT;
+ }
+ }
+
+ sumlo = (sumlo * png_ptr->filter_costs[PNG_FILTER_VALUE_PAETH]) >>
+ PNG_COST_SHIFT;
+ sumhi = (sumhi * png_ptr->filter_costs[PNG_FILTER_VALUE_PAETH]) >>
+ PNG_COST_SHIFT;
+
+ if (sumhi > PNG_HIMASK)
+ sum = PNG_MAXSUM;
+ else
+ sum = (sumhi << PNG_HISHIFT) + sumlo;
+ }
+#endif
+
+ if (sum < mins)
+ {
+ best_row = png_ptr->paeth_row;
+ }
+ }
+#endif /* PNG_WRITE_FILTER_SUPPORTED */
+ /* Do the actual writing of the filtered row data from the chosen filter. */
+
+ png_write_filtered_row(png_ptr, best_row);
+
+#ifdef PNG_WRITE_FILTER_SUPPORTED
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
+ /* Save the type of filter we picked this time for future calculations */
+ if (png_ptr->num_prev_filters > 0)
+ {
+ int j;
+ for (j = 1; j < num_p_filters; j++)
+ {
+ png_ptr->prev_filters[j] = png_ptr->prev_filters[j - 1];
+ }
+ png_ptr->prev_filters[j] = best_row[0];
+ }
+#endif
+#endif /* PNG_WRITE_FILTER_SUPPORTED */
+}
+
+
+/* Do the actual writing of a previously filtered row. */
+void /* PRIVATE */
+png_write_filtered_row(png_structp png_ptr, png_bytep filtered_row)
+{
+ png_debug(1, "in png_write_filtered_row");
+
+ png_debug1(2, "filter = %d", filtered_row[0]);
+ /* Set up the zlib input buffer */
+
+ png_ptr->zstream.next_in = filtered_row;
+ png_ptr->zstream.avail_in = (uInt)png_ptr->row_info.rowbytes + 1;
+ /* Repeat until we have compressed all the data */
+ do
+ {
+ int ret; /* Return of zlib */
+
+ /* Compress the data */
+ ret = deflate(&png_ptr->zstream, Z_NO_FLUSH);
+ /* Check for compression errors */
+ if (ret != Z_OK)
+ {
+ if (png_ptr->zstream.msg != NULL)
+ png_error(png_ptr, png_ptr->zstream.msg);
+ else
+ png_error(png_ptr, "zlib error");
+ }
+
+ /* See if it is time to write another IDAT */
+ if (!(png_ptr->zstream.avail_out))
+ {
+ /* Write the IDAT and reset the zlib output buffer */
+ png_write_IDAT(png_ptr, png_ptr->zbuf, png_ptr->zbuf_size);
+ png_ptr->zstream.next_out = png_ptr->zbuf;
+ png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size;
+ }
+ /* Repeat until all data has been compressed */
+ } while (png_ptr->zstream.avail_in);
+
+ /* Swap the current and previous rows */
+ if (png_ptr->prev_row != NULL)
+ {
+ png_bytep tptr;
+
+ tptr = png_ptr->prev_row;
+ png_ptr->prev_row = png_ptr->row_buf;
+ png_ptr->row_buf = tptr;
+ }
+
+ /* Finish row - updates counters and flushes zlib if last row */
+ png_write_finish_row(png_ptr);
+
+#ifdef PNG_WRITE_FLUSH_SUPPORTED
+ png_ptr->flush_rows++;
+
+ if (png_ptr->flush_dist > 0 &&
+ png_ptr->flush_rows >= png_ptr->flush_dist)
+ {
+ png_write_flush(png_ptr);
+ }
+#endif
+}
+#endif /* PNG_WRITE_SUPPORTED */
diff --git a/src/3rdparty/libpng/projects/cbuilder5/README.txt b/src/3rdparty/libpng/projects/cbuilder5/README.txt
new file mode 100644
index 0000000..9efaa4b
--- /dev/null
+++ b/src/3rdparty/libpng/projects/cbuilder5/README.txt
@@ -0,0 +1,11 @@
+The cbuilder5 project has not been updated to libpng-1.4.0.
+
+It needs to depend on pngpriv.h
+
+It needs to *not* depend on pnggccrd.c or pngvcrd.c
+
+It needs to DEFINE PNG_NO_PEDANTIC_WARNING while building
+the library, but not while building an application.
+
+If an updated version is not received, this project will
+be removed when libpng-1.4.0 is released.
diff --git a/src/3rdparty/libpng/projects/cbuilder5/libpng.bpf b/src/3rdparty/libpng/projects/cbuilder5/libpng.bpf
new file mode 100644
index 0000000..ee6d929
--- /dev/null
+++ b/src/3rdparty/libpng/projects/cbuilder5/libpng.bpf
@@ -0,0 +1,22 @@
+USEUNIT("libpng.cpp");
+USEUNIT("..\..\png.c");
+USEUNIT("..\..\pngerror.c");
+USEUNIT("..\..\pngget.c");
+USEUNIT("..\..\pngmem.c");
+USEUNIT("..\..\pngpread.c");
+USEUNIT("..\..\pngread.c");
+USEUNIT("..\..\pngrio.c");
+USEUNIT("..\..\pngrtran.c");
+USEUNIT("..\..\pngrutil.c");
+USEUNIT("..\..\pngset.c");
+USEUNIT("..\..\pngtrans.c");
+USEUNIT("..\..\pngwio.c");
+USEUNIT("..\..\pngwrite.c");
+USEUNIT("..\..\pngwtran.c");
+USEUNIT("..\..\pngwutil.c");
+USELIB("..\..\..\zlib\zlib.lib");
+//---------------------------------------------------------------------------
+This file is used by the project manager only and should be treated like the project file
+
+
+DllEntryPoint
diff --git a/src/3rdparty/libpng/projects/cbuilder5/libpng.bpg b/src/3rdparty/libpng/projects/cbuilder5/libpng.bpg
new file mode 100644
index 0000000..c6c6a4e
--- /dev/null
+++ b/src/3rdparty/libpng/projects/cbuilder5/libpng.bpg
@@ -0,0 +1,25 @@
+#------------------------------------------------------------------------------
+VERSION = BWS.01
+#------------------------------------------------------------------------------
+!ifndef ROOT
+ROOT = $(MAKEDIR)\..
+!endif
+#------------------------------------------------------------------------------
+MAKE = $(ROOT)\bin\make.exe -$(MAKEFLAGS) -f$**
+DCC = $(ROOT)\bin\dcc32.exe $**
+BRCC = $(ROOT)\bin\brcc32.exe $**
+#------------------------------------------------------------------------------
+PROJECTS = libpngstat.lib libpng.dll
+#------------------------------------------------------------------------------
+default: $(PROJECTS)
+#------------------------------------------------------------------------------
+
+libpngstat.lib: libpngstat.bpr
+ $(ROOT)\bin\bpr2mak -t$(ROOT)\bin\deflib.bmk $**
+ $(ROOT)\bin\make -$(MAKEFLAGS) -f$*.mak
+
+libpng.dll: libpng.bpr
+ $(ROOT)\bin\bpr2mak $**
+ $(ROOT)\bin\make -$(MAKEFLAGS) -f$*.mak
+
+
diff --git a/src/3rdparty/libpng/projects/cbuilder5/libpng.bpr b/src/3rdparty/libpng/projects/cbuilder5/libpng.bpr
new file mode 100644
index 0000000..7e09dda
--- /dev/null
+++ b/src/3rdparty/libpng/projects/cbuilder5/libpng.bpr
@@ -0,0 +1,157 @@
+<?xml version='1.0' encoding='utf-8' ?>
+<!-- C++Builder XML Project -->
+<PROJECT>
+ <MACROS>
+ <VERSION value="BCB.05.03"/>
+ <PROJECT value="libpng.dll"/>
+ <OBJFILES value="libpng.obj ..\..\pngwutil.obj ..\..\pngerror.obj ..\..\pngget.obj
+ ..\..\pngmem.obj ..\..\pngpread.obj ..\..\pngread.obj ..\..\pngrio.obj
+ ..\..\pngrtran.obj ..\..\pngrutil.obj ..\..\pngset.obj ..\..\pngtrans.obj
+ ..\..\pngwio.obj ..\..\pngwrite.obj ..\..\pngwtran.obj ..\..\png.obj"/>
+ <RESFILES value=""/>
+ <DEFFILE value=""/>
+ <RESDEPEN value="$(RESFILES)"/>
+ <LIBFILES value="..\..\..\zlib\zlib.lib"/>
+ <LIBRARIES value="bcbsmp50.lib dclocx50.lib NMFast50.lib Tee50.lib Vclx50.lib Vcl50.lib"/>
+ <SPARELIBS value="Vcl50.lib Vclx50.lib Tee50.lib NMFast50.lib dclocx50.lib bcbsmp50.lib"/>
+ <PACKAGES value="Vcl50.bpi Vclx50.bpi bcbsmp50.bpi Qrpt50.bpi Vcldb50.bpi Vclbde50.bpi
+ ibsmp50.bpi vcldbx50.bpi TeeUI50.bpi TeeDB50.bpi Tee50.bpi TeeQR50.bpi
+ VCLIB50.bpi bcbie50.bpi vclie50.bpi Inetdb50.bpi Inet50.bpi NMFast50.bpi
+ dclocx50.bpi bcb97axserver50.bpi SIMULUSCOMPONENTS.bpi Simulus2.bpi"/>
+ <PATHCPP value=".;..\.."/>
+ <PATHPAS value=".;"/>
+ <PATHRC value=".;"/>
+ <PATHASM value=".;"/>
+ <DEBUGLIBPATH value="$(BCB)\lib\debug"/>
+ <RELEASELIBPATH value="$(BCB)\lib\release"/>
+ <LINKER value="tlink32"/>
+ <USERDEFINES value="PNG_BUILD_DLL;PNG_NO_MODULEDEF"/>
+ <SYSDEFINES value="NO_STRICT;_NO_VCL;_RTLDLL"/>
+ <MAINSOURCE value="libpng.bpf"/>
+ <INCLUDEPATH value="..\..;..\..\..\zlib;$(BCB)\include"/>
+ <LIBPATH value="..\..;$(BCB)\lib\obj;$(BCB)\lib"/>
+ <WARNINGS value="-w8092 -w8091 -w8090 -w8089 -w8087 -wprc -wucp -wstv -wstu -wsig -wpin
+ -wnod -wnak -wdef -wcln -wbbf -wasm -wamp -wamb"/>
+ </MACROS>
+ <OPTIONS>
+ <CFLAG1 value="-WD -O2 -w -Vx -Ve -x- -RT- -X- -a8 -5 -b- -d -k- -vi -tWD -tWM -c"/>
+ <PFLAGS value="-$Y- -$L- -$D- -$C- -v -JPHNE -M"/>
+ <RFLAGS value=""/>
+ <AFLAGS value="/mx /w2 /zn"/>
+ <LFLAGS value="-D&quot;&quot; -aa -Tpd -x -Gn -Gi -w"/>
+ </OPTIONS>
+ <LINKER>
+ <ALLOBJ value="c0d32.obj $(OBJFILES)"/>
+ <ALLRES value="$(RESFILES)"/>
+ <ALLLIB value="$(LIBFILES) $(LIBRARIES) import32.lib cw32mti.lib"/>
+ </LINKER>
+ <IDEOPTIONS>
+[Version Info]
+IncludeVerInfo=0
+AutoIncBuild=0
+MajorVer=1
+MinorVer=0
+Release=0
+Build=0
+Debug=0
+PreRelease=0
+Special=0
+Private=0
+DLL=1
+Locale=2057
+CodePage=1252
+
+[Version Info Keys]
+CompanyName=
+FileDescription=
+FileVersion=1.0.0.0
+InternalName=
+LegalCopyright=
+LegalTrademarks=
+OriginalFilename=
+ProductName=
+ProductVersion=
+Comments=
+
+[HistoryLists\hlIncludePath]
+Count=18
+Item0=..\..;..\..\..\zlib;$(BCB)\include
+Item1=..\..;P:\My Documents\Source\PNG+ZLib\zlib;$(BCB)\include
+Item2=..\..;..\Source\ThirdParty\PortableNetworkGraphics\external;..\Source\ThirdParty\PortableNetworkGraphics;..\Source\ThirdParty\ZLibCompression\external;$(BCB)\include
+Item3=..\Source\ThirdParty\PortableNetworkGraphics\external;..\Source\ThirdParty\PortableNetworkGraphics;..\Source\ThirdParty\ZLibCompression\external;$(BCB)\include
+Item4=..\Source\ThirdParty\PortableNetworkGraphics\external;..\Source\ThirdParty\PortableNetworkGraphics;..\Source\ThirdParty\ZLibCompression;$(BCB)\include
+Item5=..\Source\ThirdParty\PortableNetworkGraphics;..\Source\ThirdParty\ZLibCompression;$(BCB)\include
+Item6=..\Source\ThirdParty\PortableNetworkGraphics;P:\Development\Source\ThirdParty\ZLibCompression;$(BCB)\include
+Item7=..\Source\ThirdParty\PortableNetworkGraphics;$(BCB)\include
+Item8=$(BCB)\include
+Item9=..\Source;..\Source\General\Templates;..\Source\SIMUtilities;$(BCB)\include;$(BCB)\include\vcl
+Item10=P:\Development\Source\;P:\Development\Source\General\Templates\;P:\Development\Source\SIMUtilities\;$(BCB)\include;$(BCB)\include\vcl
+Item11=P:\Development\Source;P:\Development\Source\General\Templates\;P:\Development\Source\SIMUtilities\;$(BCB)\include;$(BCB)\include\vcl
+Item12=P:\Development\Source\General\Templates\;P:\Development\Source\SIMUtilities\;$(BCB)\include;$(BCB)\include\vcl
+Item13=P:\Development\Source\General\Templates\;P:\Development\Source\SIMUtilities;$(BCB)\include;$(BCB)\include\vcl
+Item14=P:\Development\Source\General\Templates\;$(BCB)\include;$(BCB)\include\vcl
+Item15=P:\Development\Source\General\Templates;$(BCB)\include;$(BCB)\include\vcl
+Item16=P:\Development\Source;$(BCB)\include;$(BCB)\include\vcl
+Item17=$(BCB)\include;$(BCB)\include\vcl
+
+[HistoryLists\hlLibraryPath]
+Count=10
+Item0=..\..;$(BCB)\lib\obj;$(BCB)\lib
+Item1=..\..;..\Source\ThirdParty\PortableNetworkGraphics\external;..\Source\ThirdParty\PortableNetworkGraphics;$(BCB)\lib\obj;$(BCB)\lib
+Item2=..\Source\ThirdParty\PortableNetworkGraphics\external;..\Source\ThirdParty\PortableNetworkGraphics;$(BCB)\lib\obj;$(BCB)\lib
+Item3=..\Source\ThirdParty\PortableNetworkGraphics;$(BCB)\lib\obj;$(BCB)\lib
+Item4=$(BCB)\lib\obj;$(BCB)\lib
+Item5=..\Source\SIMUtilities;..\Source;$(BCB)\lib\obj;$(BCB)\lib
+Item6=P:\Development\Source\SIMUtilities\;P:\Development\Source\;$(BCB)\lib\obj;$(BCB)\lib
+Item7=P:\Development\Source\SIMUtilities;P:\Development\Source\;$(BCB)\lib\obj;$(BCB)\lib
+Item8=P:\Development\Source\;$(BCB)\lib\obj;$(BCB)\lib
+Item9=P:\Development\Source;$(BCB)\lib\obj;$(BCB)\lib
+
+[HistoryLists\hlDebugSourcePath]
+Count=1
+Item0=$(BCB)\source\vcl
+
+[HistoryLists\hlConditionals]
+Count=20
+Item0=ZLIB_DLL;Z_PREFIX;PNG_BUILD_DLL;PNG_NO_MODULEDEF
+Item1=_DEBUG;ZLIB_DLL;Z_PREFIX;PNG_BUILD_DLL;PNG_NO_MODULEDEF
+Item2=PNG_BUILD_DLL;ZLIB_DLL;_DEBUG;PNG_NO_MODULEDEF
+Item3=PNG_BUILD_DLL;ZLIB_DLL;_DEBUG;PNG_DEBUG=5;PNG_NO_MODULEDEF;PNG_NO_GLOBAL_ARRAYS
+Item4=PNG_BUILD_DLL;ZLIB_DLL;_DEBUG;PNG_DEBUG=5;PNG_NO_MODULEDEF;PNG_SETJMP_NOT_SUPPORTED;PNG_DEBUG_FILE=stderr
+Item5=PNG_BUILD_DLL;ZLIB_DLL;_DEBUG;PNG_DEBUG;PNG_NO_MODULEDEF;PNG_SETJMP_NOT_SUPPORTED
+Item6=PNG_BUILD_DLL;ZLIB_DLL;_DEBUG;PNG_DEBUG=5;PNG_NO_MODULEDEF;PNG_SETJMP_NOT_SUPPORTED
+Item7=PNG_BUILD_DLL;ZLIB_DLL;_DEBUG;PNG_DEBUG=5;PNG_NO_MODULEDEF
+Item8=PNG_BUILD_DLL;ZLIB_DLL;_DEBUG;PNG_DEBUG=5
+Item9=PNG_BUILD_DLL;ZLIB_DLL;_DEBUG
+Item10=PNG_BUILD_DLL;ZLIB_DLL
+Item11=PNG_BUILD_DLL
+Item12=PNG_DLL;PNG_BUILD_DLL;ZLIB_DLL
+Item13=PNG_DLL;PNG_BUILD_DLL;PNG_NO_GLOBAL_ARRAYS;ZLIB_DLL
+Item14=PNG_DLL;PNG_BUILD_DLL;PNG_NO_GLOBAL_ARRAYS
+Item15=PNG_DLL;PNG_BUILD_DLL
+Item16=PNG_DLL;PNG_BUILD_DLL;PNG_MODULEDEF
+Item17=_HTML_FORM
+Item18=_DEBUG;_HTML_FORM
+Item19=_DEBUG
+
+[HistoryLists\hlIntOutputDir]
+Count=2
+Item0=..\Obj
+Item1=P:\Development\Obj
+
+[Debugging]
+DebugSourceDirs=
+
+[Parameters]
+RunParams=
+HostApplication=P:\Development\Executables\LibPNGTestApp.exe
+RemoteHost=
+RemotePath=
+RemoteDebug=0
+
+[Compiler]
+ShowInfoMsgs=0
+LinkDebugVcl=0
+LinkCGLIB=0
+ </IDEOPTIONS>
+</PROJECT> \ No newline at end of file
diff --git a/src/3rdparty/libpng/projects/cbuilder5/libpng.cpp b/src/3rdparty/libpng/projects/cbuilder5/libpng.cpp
new file mode 100644
index 0000000..97865f5
--- /dev/null
+++ b/src/3rdparty/libpng/projects/cbuilder5/libpng.cpp
@@ -0,0 +1,29 @@
+//---------------------------------------------------------------------------
+#include <windows.h>
+//---------------------------------------------------------------------------
+// Important note about DLL memory management when your DLL uses the
+// static version of the RunTime Library:
+//
+// If your DLL exports any functions that pass String objects (or structs/
+// classes containing nested Strings) as parameter or function results,
+// you will need to add the library MEMMGR.LIB to both the DLL project and
+// any other projects that use the DLL. You will also need to use MEMMGR.LIB
+// if any other projects which use the DLL will be performing new or delete
+// operations on any non-TObject-derived classes which are exported from the
+// DLL. Adding MEMMGR.LIB to your project will change the DLL and its calling
+// EXE's to use the BORLNDMM.DLL as their memory manager. In these cases,
+// the file BORLNDMM.DLL should be deployed along with your DLL.
+//
+// To avoid using BORLNDMM.DLL, pass string information using "char *" or
+// ShortString parameters.
+//
+// If your DLL uses the dynamic version of the RTL, you do not need to
+// explicitly add MEMMGR.LIB as this will be done implicitly for you
+//---------------------------------------------------------------------------
+
+int WINAPI DllEntryPoint(HINSTANCE, unsigned long, void*)
+{
+ return 1;
+}
+//---------------------------------------------------------------------------
+ \ No newline at end of file
diff --git a/src/3rdparty/libpng/projects/cbuilder5/libpng.readme.txt b/src/3rdparty/libpng/projects/cbuilder5/libpng.readme.txt
new file mode 100644
index 0000000..c99c1e9
--- /dev/null
+++ b/src/3rdparty/libpng/projects/cbuilder5/libpng.readme.txt
@@ -0,0 +1,25 @@
+Project files to build libpng using Borland C++ Builder v5.0
+
+In order to build and use libpng, please follow these steps:
+
+ 1). Install zlib in a directory at the same level with libpng.
+
+ 2). In a console window, go to the zlib directory and type:
+ make -f win32\Makefile.bor
+ After performing this step, you should have a file named
+ zlib.lib in the zlib directory.
+
+ 3). Add the following conditional define to your project:
+ PNG_USE_DLL
+
+ 4). Add libpng.lib or libpngstat.lib to the project.
+ Build the project.
+
+ 5). If the build fails, add the paths to png.h and zlib.h to
+ your include path, and restart the build.
+
+By default, the libpng project uses zlib as a static library. If
+you wish to use zlib as a DLL, please read the important notes from
+the zlib DLL FAQ, found inside the zlib distribution.
+
+See the libpng documentation for instructions on how to use the code.
diff --git a/src/3rdparty/libpng/projects/cbuilder5/libpngstat.bpf b/src/3rdparty/libpng/projects/cbuilder5/libpngstat.bpf
new file mode 100644
index 0000000..f736b62
--- /dev/null
+++ b/src/3rdparty/libpng/projects/cbuilder5/libpngstat.bpf
@@ -0,0 +1,22 @@
+USEUNIT("..\..\png.c");
+USEUNIT("..\..\pngerror.c");
+USEUNIT("..\..\pngget.c");
+USEUNIT("..\..\pngmem.c");
+USEUNIT("..\..\pngpread.c");
+USEUNIT("..\..\pngread.c");
+USEUNIT("..\..\pngrio.c");
+USEUNIT("..\..\pngrtran.c");
+USEUNIT("..\..\pngrutil.c");
+USEUNIT("..\..\pngset.c");
+USEUNIT("..\..\pngtrans.c");
+USEUNIT("..\..\pngwio.c");
+USEUNIT("..\..\pngwrite.c");
+USEUNIT("..\..\pngwtran.c");
+USEUNIT("..\..\pngwutil.c");
+USELIB("..\..\..\zlib\zlib.lib");
+//---------------------------------------------------------------------------
+#define Library
+
+// To add a file to the library use the Project menu 'Add to Project'.
+
+ \ No newline at end of file
diff --git a/src/3rdparty/libpng/projects/cbuilder5/libpngstat.bpr b/src/3rdparty/libpng/projects/cbuilder5/libpngstat.bpr
new file mode 100644
index 0000000..68abb8d
--- /dev/null
+++ b/src/3rdparty/libpng/projects/cbuilder5/libpngstat.bpr
@@ -0,0 +1,109 @@
+<?xml version='1.0' encoding='utf-8' ?>
+<!-- C++Builder XML Project -->
+<PROJECT>
+ <MACROS>
+ <VERSION value="BCB.05.03"/>
+ <PROJECT value="libpngstat.lib"/>
+ <OBJFILES value="..\..\pngerror.obj ..\..\png.obj ..\..\pngwutil.obj ..\..\pngmem.obj
+ ..\..\pngpread.obj ..\..\pngread.obj ..\..\pngrio.obj ..\..\pngrtran.obj
+ ..\..\pngrutil.obj ..\..\pngset.obj ..\..\pngtrans.obj ..\..\pngwio.obj
+ ..\..\pngwrite.obj ..\..\pngwtran.obj ..\..\pngget.obj"/>
+ <RESFILES value=""/>
+ <DEFFILE value=""/>
+ <RESDEPEN value="$(RESFILES)"/>
+ <LIBFILES value="..\..\..\zlib\zlib.lib"/>
+ <LIBRARIES value=""/>
+ <PACKAGES value=""/>
+ <PATHCPP value=".;..\.."/>
+ <PATHPAS value=".;"/>
+ <PATHRC value=".;"/>
+ <PATHASM value=".;"/>
+ <LINKER value="TLib"/>
+ <USERDEFINES value=""/>
+ <SYSDEFINES value="_RTLDLL;NO_STRICT"/>
+ <MAINSOURCE value="libpngstat.bpf"/>
+ <INCLUDEPATH value="..\..;..\..\..\zlib;$(BCB)\include"/>
+ <LIBPATH value="..\..;$(BCB)\lib\obj;$(BCB)\lib"/>
+ <WARNINGS value="-w-par"/>
+ <LISTFILE value=""/>
+ </MACROS>
+ <OPTIONS>
+ <CFLAG1 value="-O2 -w -Vx -Ve -X- -a8 -5 -b- -d -k- -vi -c -tW -tWM"/>
+ <PFLAGS value="-$Y- -$L- -$D- -$C- -v -JPHNE -M"/>
+ <AFLAGS value="/mx /w2 /zn"/>
+ <LFLAGS value=""/>
+ </OPTIONS>
+ <LINKER>
+ <ALLOBJ value="$(OBJFILES)"/>
+ <ALLLIB value=""/>
+ </LINKER>
+ <IDEOPTIONS>
+[Version Info]
+IncludeVerInfo=0
+AutoIncBuild=0
+MajorVer=1
+MinorVer=0
+Release=0
+Build=0
+Debug=0
+PreRelease=0
+Special=0
+Private=0
+DLL=0
+Locale=2057
+CodePage=1252
+
+[Version Info Keys]
+CompanyName=
+FileDescription=
+FileVersion=1.0.0.0
+InternalName=
+LegalCopyright=
+LegalTrademarks=
+OriginalFilename=
+ProductName=
+ProductVersion=1.0.0.0
+Comments=
+
+[HistoryLists\hlIncludePath]
+Count=2
+Item0=..\..;P:\My Documents\Source\PNG+ZLib\zlib;$(BCB)\include
+Item1=..\..;$(BCB)\include;$(BCB)\include\vcl
+
+[HistoryLists\hlLibraryPath]
+Count=1
+Item0=..\..;$(BCB)\lib\obj;$(BCB)\lib
+
+[HistoryLists\hlDebugSourcePath]
+Count=1
+Item0=$(BCB)\source\vcl
+
+[HistoryLists\hlConditionals]
+Count=1
+Item0=_DEBUG
+
+[HistoryLists\hlTlibPageSize]
+Count=1
+Item0=0x0010
+
+[Debugging]
+DebugSourceDirs=$(BCB)\source\vcl
+
+[Parameters]
+RunParams=
+HostApplication=
+RemoteHost=
+RemotePath=
+RemoteDebug=0
+
+[Compiler]
+ShowInfoMsgs=0
+LinkDebugVcl=0
+LinkCGLIB=0
+
+[Language]
+ActiveLang=
+ProjectLang=
+RootDir=
+ </IDEOPTIONS>
+</PROJECT> \ No newline at end of file
diff --git a/src/3rdparty/libpng/projects/cbuilder5/zlib.readme.txt b/src/3rdparty/libpng/projects/cbuilder5/zlib.readme.txt
new file mode 100644
index 0000000..cb6a7a8
--- /dev/null
+++ b/src/3rdparty/libpng/projects/cbuilder5/zlib.readme.txt
@@ -0,0 +1,14 @@
+The project that builds libpng under Borland C++ Builder does not
+explicitly build zlib. By taking this decision, there is no need
+to update the libpng project each time when there is a change in
+the list of zlib source files. After all, this list is private to
+zlib, and applications (such as libpng) should not assume anything
+about it.
+
+If you wish to contribute a project that builds zlib under Borland
+C++ Builder, please submit it to the zlib developers, not to the
+libpng developers.
+
+By default, the libpng project uses zlib as a static library. If
+you wish to use zlib as a DLL, please read the important notes from
+the zlib DLL FAQ, found inside the zlib distribution.
diff --git a/src/3rdparty/libpng/projects/visualc6/README.txt b/src/3rdparty/libpng/projects/visualc6/README.txt
new file mode 100644
index 0000000..b650e9e
--- /dev/null
+++ b/src/3rdparty/libpng/projects/visualc6/README.txt
@@ -0,0 +1,55 @@
+Microsoft Developer Studio Project File, Format Version 6.00 for libpng.
+
+Copyright (C) 2000-2004 Simon-Pierre Cadieux.
+Copyright (C) 2004 Cosmin Truta.
+
+This code is released under the libpng license.
+For conditions of distribution and use, see copyright notice in png.h
+
+
+Assumptions:
+* The libpng source files are in ..\..
+* The zlib source files are in ..\..\..\zlib
+* The zlib project files are in ..\..\..\zlib\projects\visualc6
+
+
+To use:
+
+1) On the main menu, select "File | Open Workspace".
+ Open "libpng.dsw".
+
+2) Select "Build | Set Active Configuration".
+ Choose the configuration you wish to build.
+ (Choose libpng or pngtest; zlib will be built automatically.)
+
+3) Select "Build | Clean".
+
+4) Select "Build | Build ... (F7)". Ignore warning messages about
+ not being able to find certain include files (e.g. alloc.h).
+
+5) If you built the sample program (pngtest),
+ select "Build | Execute ... (Ctrl+F5)".
+
+
+This project builds the libpng binaries as follows:
+
+* Win32_DLL_Release\libpng14.dll DLL build
+* Win32_DLL_Debug\libpng14d.dll DLL build (debug version)
+* Win32_DLL_VB\libpng14vb.dll DLL build for Visual Basic, using stdcall
+* Win32_LIB_Release\libpng.lib static build
+* Win32_LIB_Debug\libpngd.lib static build (debug version)
+
+
+Notes:
+
+If you change anything in the source files, or select different compiler
+settings, please change the DLL name to something different than any of
+the above names. Also, make sure that in your "pngusr.h" you define
+PNG_USER_PRIVATEBUILD and PNG_USER_DLLFNAME_POSTFIX according to the
+instructions provided in "pngconf.h".
+
+All DLLs built by this project use the Microsoft dynamic C runtime library
+MSVCRT.DLL (MSVCRTD.DLL for debug versions). If you distribute any of the
+above mentioned libraries you should also include this DLL in your package.
+For a list of files that are redistributable in Visual C++ 6.0, see
+Common\Redist\Redist.txt on Disc 1 of the Visual C++ 6.0 product CDs.
diff --git a/src/3rdparty/libpng/projects/visualc6/libpng.dsp b/src/3rdparty/libpng/projects/visualc6/libpng.dsp
new file mode 100644
index 0000000..6704255
--- /dev/null
+++ b/src/3rdparty/libpng/projects/visualc6/libpng.dsp
@@ -0,0 +1,328 @@
+# Microsoft Developer Studio Project File - Name="libpng" - Package Owner=<4>
+# Microsoft Developer Studio Generated Build File, Format Version 6.00
+# ** DO NOT EDIT **
+
+# TARGTYPE "Win32 (x86) Dynamic-Link Library" 0x0102
+# TARGTYPE "Win32 (x86) Static Library" 0x0104
+
+CFG=libpng - Win32 DLL Release
+!MESSAGE This is not a valid makefile. To build this project using NMAKE,
+!MESSAGE use the Export Makefile command and run
+!MESSAGE
+!MESSAGE NMAKE /f "libpng.mak".
+!MESSAGE
+!MESSAGE You can specify a configuration when running NMAKE
+!MESSAGE by defining the macro CFG on the command line. For example:
+!MESSAGE
+!MESSAGE NMAKE /f "libpng.mak" CFG="libpng - Win32 DLL Release"
+!MESSAGE
+!MESSAGE Possible choices for configuration are:
+!MESSAGE
+!MESSAGE "libpng - Win32 DLL Release" (based on "Win32 (x86) Dynamic-Link Library")
+!MESSAGE "libpng - Win32 DLL Debug" (based on "Win32 (x86) Dynamic-Link Library")
+!MESSAGE "libpng - Win32 DLL VB" (based on "Win32 (x86) Dynamic-Link Library")
+!MESSAGE "libpng - Win32 LIB Release" (based on "Win32 (x86) Static Library")
+!MESSAGE "libpng - Win32 LIB Debug" (based on "Win32 (x86) Static Library")
+!MESSAGE
+
+# Begin Project
+# PROP AllowPerConfigDependencies 0
+# PROP Scc_ProjName ""
+# PROP Scc_LocalPath ""
+
+!IF "$(CFG)" == "libpng - Win32 DLL Release"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 0
+# PROP BASE Output_Dir "libpng___Win32_DLL_Release"
+# PROP BASE Intermediate_Dir "libpng___Win32_DLL_Release"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 0
+# PROP Output_Dir "Win32_DLL_Release"
+# PROP Intermediate_Dir "Win32_DLL_Release"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+CPP=cl.exe
+# ADD BASE CPP /nologo /MD /W3 /O2 /D "WIN32" /D "NDEBUG" /FD /c
+# SUBTRACT BASE CPP /YX /Yc /Yu
+# ADD CPP /nologo /MD /W3 /O2 /I "..\.." /I "..\..\..\zlib" /D "WIN32" /D "NDEBUG" /D "PNG_BUILD_DLL" /D "ZLIB_DLL" /FD /c
+# SUBTRACT CPP /YX /Yc /Yu
+MTL=midl.exe
+# ADD BASE MTL /nologo /D "NDEBUG" /mktyplib203 /win32
+# ADD MTL /nologo /D "NDEBUG" /mktyplib203 /win32
+RSC=rc.exe
+# ADD BASE RSC /l 0x409 /d "PNG_NO_PEDANTIC_WARNINGS" /d "NDEBUG"
+# ADD RSC /l 0x409 /i "..\.." /d "PNG_NO_PEDANTIC_WARNINGS" /d "NDEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LINK32=link.exe
+# ADD BASE LINK32 /nologo /dll /machine:I386
+# ADD LINK32 zlib1.lib /nologo /dll /machine:I386 /out:"Win32_DLL_Release\libpng14.dll" /libpath:"..\..\..\zlib\projects\visualc6\Win32_DLL_Release"
+
+!ELSEIF "$(CFG)" == "libpng - Win32 DLL Debug"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 1
+# PROP BASE Output_Dir "libpng___Win32_DLL_Release"
+# PROP BASE Intermediate_Dir "libpng___Win32_DLL_Release"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 1
+# PROP Output_Dir "Win32_DLL_Debug"
+# PROP Intermediate_Dir "Win32_DLL_Debug"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+CPP=cl.exe
+# ADD BASE CPP /nologo /MDd /W3 /Gm /ZI /Od /D "WIN32" /D "_DEBUG" /FD /GZ /c
+# SUBTRACT BASE CPP /YX /Yc /Yu
+# ADD CPP /nologo /MDd /W3 /Gm /ZI /Od /I "..\.." /I "..\..\..\zlib" /D "WIN32" /D "_DEBUG" /D "DEBUG" /D PNG_DEBUG=1 /D "PNG_BUILD_DLL" /D "ZLIB_DLL" /FD /GZ /c
+# SUBTRACT CPP /YX /Yc /Yu
+MTL=midl.exe
+# ADD BASE MTL /nologo /D "_DEBUG" /mktyplib203 /win32
+# ADD MTL /nologo /D "_DEBUG" /mktyplib203 /win32
+RSC=rc.exe
+# ADD BASE RSC /l 0x409 /d "PNG_NO_PEDANTIC_WARNINGS" /d "_DEBUG"
+# ADD RSC /l 0x409 /i "..\.." /d "PNG_NO_PEDANTIC_WARNINGS" /d "_DEBUG" /d PNG_DEBUG=1
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LINK32=link.exe
+# ADD BASE LINK32 /nologo /dll /debug /machine:I386 /pdbtype:sept
+# ADD LINK32 zlib1d.lib /nologo /dll /debug /machine:I386 /out:"Win32_DLL_Debug\libpng14d.dll" /libpath:"..\..\..\zlib\projects\visualc6\Win32_DLL_Debug"
+
+!ELSEIF "$(CFG)" == "libpng - Win32 DLL VB"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 0
+# PROP BASE Output_Dir "libpng___Win32_DLL_VB"
+# PROP BASE Intermediate_Dir "libpng___Win32_DLL_VB"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 0
+# PROP Output_Dir "Win32_DLL_VB"
+# PROP Intermediate_Dir "Win32_DLL_VB"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+CPP=cl.exe
+# ADD BASE CPP /nologo /MD /W3 /O2 /D "WIN32" /D "NDEBUG" /FD /c
+# SUBTRACT BASE CPP /YX /Yc /Yu
+# ADD CPP /nologo /MD /W3 /O2 /I "..\.." /I "..\..\..\zlib" /D "WIN32" /D "NDEBUG" /D "PNG_BUILD_DLL" /D "ZLIB_DLL" /D PNGAPI=__stdcall /D "PNG_NO_MODULEDEF" /D "PNG_LIBPNG_SPECIALBUILD" /FD /c
+# SUBTRACT CPP /YX /Yc /Yu
+MTL=midl.exe
+# ADD BASE MTL /nologo /D "NDEBUG" /mktyplib203 /win32
+# ADD MTL /nologo /D "NDEBUG" /mktyplib203 /win32
+RSC=rc.exe
+# ADD BASE RSC /l 0x409 /d "PNG_NO_PEDANTIC_WARNINGS" /d "NDEBUG"
+# ADD RSC /l 0x409 /i "..\.." /d "PNG_NO_PEDANTIC_WARNINGS" /d "NDEBUG" /dPNG_LIBPNG_DLLFNAME_POSTFIX=""""VB"""" /dPNG_LIBPNG_SPECIALBUILD=""""__stdcall calling convention used for exported functions""""
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LINK32=link.exe
+# ADD BASE LINK32 /nologo /dll /machine:I386
+# ADD LINK32 zlib1.lib /nologo /dll /machine:I386 /out:"Win32_DLL_VB\libpng14vb.dll" /libpath:"..\..\..\zlib\projects\visualc6\Win32_DLL_Release"
+# Begin Special Build Tool
+OutDir=.\Win32_DLL_VB
+TargetName=libpng14vb
+SOURCE="$(InputPath)"
+PostBuild_Cmds=echo Deleting $(targetname) import library and export file (Not required for VB projects) del $(outdir)\$(targetname).lib del $(outdir)\$(targetname).exp
+# End Special Build Tool
+
+!ELSEIF "$(CFG)" == "libpng - Win32 LIB Release"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 0
+# PROP BASE Output_Dir "libpng___Win32_LIB_Release"
+# PROP BASE Intermediate_Dir "libpng___Win32_LIB_Release"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 0
+# PROP Output_Dir "Win32_LIB_Release"
+# PROP Intermediate_Dir "Win32_LIB_Release"
+# PROP Target_Dir ""
+CPP=cl.exe
+# ADD BASE CPP /nologo /MD /W3 /O2 /D "WIN32" /D "NDEBUG" /FD /c
+# SUBTRACT BASE CPP /YX /Yc /Yu
+# ADD CPP /nologo /MD /W3 /O2 /I "..\.." /I "..\..\..\zlib" /D "WIN32" /D "NDEBUG" /FD /c
+# SUBTRACT CPP /YX /Yc /Yu
+RSC=rc.exe
+# ADD BASE RSC /l 0x409 /d "PNG_NO_PEDANTIC_WARNINGS" /d "NDEBUG"
+# ADD RSC /l 0x409 /i "..\.." /d "PNG_NO_PEDANTIC_WARNINGS" /d "NDEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LIB32=link.exe -lib
+# ADD BASE LIB32 /nologo
+# ADD LIB32 /nologo
+
+!ELSEIF "$(CFG)" == "libpng - Win32 LIB Debug"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 1
+# PROP BASE Output_Dir "libpng___Win32_LIB_Debug"
+# PROP BASE Intermediate_Dir "libpng___Win32_LIB_Debug"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 1
+# PROP Output_Dir "Win32_LIB_Debug"
+# PROP Intermediate_Dir "Win32_LIB_Debug"
+# PROP Target_Dir ""
+CPP=cl.exe
+# ADD BASE CPP /nologo /MDd /W3 /Gm /ZI /Od /D "WIN32" /D "_DEBUG" /FD /GZ /c
+# SUBTRACT BASE CPP /YX /Yc /Yu
+# ADD CPP /nologo /MDd /W3 /Gm /ZI /Od /I "..\.." /I "..\..\..\zlib" /D "WIN32" /D "_DEBUG" /D "DEBUG" /D PNG_DEBUG=1 /FD /GZ /c
+# SUBTRACT CPP /YX /Yc /Yu
+RSC=rc.exe
+# ADD BASE RSC /l 0x409 /d "PNG_NO_PEDANTIC_WARNINGS" /d "_DEBUG"
+# ADD RSC /l 0x409 /d "PNG_NO_PEDANTIC_WARNINGS" /d "_DEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LIB32=link.exe -lib
+# ADD BASE LIB32 /nologo
+# ADD LIB32 /nologo /out:"Win32_LIB_Debug\libpngd.lib"
+
+!ENDIF
+
+# Begin Target
+
+# Name "libpng - Win32 DLL Release"
+# Name "libpng - Win32 DLL Debug"
+# Name "libpng - Win32 DLL VB"
+# Name "libpng - Win32 LIB Release"
+# Name "libpng - Win32 LIB Debug"
+# Begin Group "Source Files"
+
+# PROP Default_Filter "cpp;c;cxx;rc;def;r;odl;idl;hpj;bat"
+# Begin Source File
+
+SOURCE=..\..\png.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\pngerror.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\pngget.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\pngmem.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\pngpread.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\pngread.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\pngrio.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\pngrtran.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\pngrutil.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\pngset.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\pngtrans.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\scripts\pngwin.def
+
+!IF "$(CFG)" == "libpng - Win32 DLL Release"
+
+!ELSEIF "$(CFG)" == "libpng - Win32 DLL Debug"
+
+!ELSEIF "$(CFG)" == "libpng - Win32 DLL VB"
+
+# PROP Exclude_From_Build 1
+
+!ELSEIF "$(CFG)" == "libpng - Win32 LIB Release"
+
+# PROP Exclude_From_Build 1
+
+!ELSEIF "$(CFG)" == "libpng - Win32 LIB Debug"
+
+# PROP Exclude_From_Build 1
+
+!ENDIF
+
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\pngwio.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\pngwrite.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\pngwtran.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\pngwutil.c
+# End Source File
+# End Group
+# Begin Group "Header Files"
+
+# PROP Default_Filter "h;hpp;hxx;hm;inl"
+# Begin Source File
+
+SOURCE=..\..\png.h
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\pngconf.h
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\pngpriv.h
+# End Source File
+# End Group
+# Begin Group "Resource Files"
+
+# PROP Default_Filter "ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe"
+# Begin Source File
+
+SOURCE=..\..\scripts\pngwin.rc
+
+!IF "$(CFG)" == "libpng - Win32 DLL Release"
+
+!ELSEIF "$(CFG)" == "libpng - Win32 DLL Debug"
+
+!ELSEIF "$(CFG)" == "libpng - Win32 DLL VB"
+
+!ELSEIF "$(CFG)" == "libpng - Win32 LIB Release"
+
+# PROP Exclude_From_Build 1
+
+!ELSEIF "$(CFG)" == "libpng - Win32 LIB Debug"
+
+# PROP Exclude_From_Build 1
+
+!ENDIF
+
+# End Source File
+# End Group
+# Begin Source File
+
+SOURCE=.\README.txt
+# End Source File
+# End Target
+# End Project
diff --git a/src/3rdparty/libpng/projects/visualc6/libpng.dsw b/src/3rdparty/libpng/projects/visualc6/libpng.dsw
new file mode 100644
index 0000000..2a98646
--- /dev/null
+++ b/src/3rdparty/libpng/projects/visualc6/libpng.dsw
@@ -0,0 +1,59 @@
+Microsoft Developer Studio Workspace File, Format Version 6.00
+# WARNING: DO NOT EDIT OR DELETE THIS WORKSPACE FILE!
+
+###############################################################################
+
+Project: "libpng"=".\libpng.dsp" - Package Owner=<4>
+
+Package=<5>
+{{{
+}}}
+
+Package=<4>
+{{{
+ Begin Project Dependency
+ Project_Dep_Name zlib
+ End Project Dependency
+}}}
+
+###############################################################################
+
+Project: "pngtest"=".\pngtest.dsp" - Package Owner=<4>
+
+Package=<5>
+{{{
+}}}
+
+Package=<4>
+{{{
+ Begin Project Dependency
+ Project_Dep_Name libpng
+ End Project Dependency
+}}}
+
+###############################################################################
+
+Project: "zlib"="..\..\..\zlib\projects\visualc6\zlib.dsp" - Package Owner=<4>
+
+Package=<5>
+{{{
+}}}
+
+Package=<4>
+{{{
+}}}
+
+###############################################################################
+
+Global:
+
+Package=<5>
+{{{
+}}}
+
+Package=<3>
+{{{
+}}}
+
+###############################################################################
+
diff --git a/src/3rdparty/libpng/projects/visualc6/pngtest.dsp b/src/3rdparty/libpng/projects/visualc6/pngtest.dsp
new file mode 100644
index 0000000..d3cb068
--- /dev/null
+++ b/src/3rdparty/libpng/projects/visualc6/pngtest.dsp
@@ -0,0 +1,178 @@
+# Microsoft Developer Studio Project File - Name="pngtest" - Package Owner=<4>
+# Microsoft Developer Studio Generated Build File, Format Version 6.00
+# ** DO NOT EDIT **
+
+# TARGTYPE "Win32 (x86) Console Application" 0x0103
+
+CFG=pngtest - Win32 DLL Release
+!MESSAGE This is not a valid makefile. To build this project using NMAKE,
+!MESSAGE use the Export Makefile command and run
+!MESSAGE
+!MESSAGE NMAKE /f "pngtest.mak".
+!MESSAGE
+!MESSAGE You can specify a configuration when running NMAKE
+!MESSAGE by defining the macro CFG on the command line. For example:
+!MESSAGE
+!MESSAGE NMAKE /f "pngtest.mak" CFG="pngtest - Win32 DLL Release"
+!MESSAGE
+!MESSAGE Possible choices for configuration are:
+!MESSAGE
+!MESSAGE "pngtest - Win32 DLL Release" (based on "Win32 (x86) Console Application")
+!MESSAGE "pngtest - Win32 DLL Debug" (based on "Win32 (x86) Console Application")
+!MESSAGE "pngtest - Win32 LIB Release" (based on "Win32 (x86) Console Application")
+!MESSAGE "pngtest - Win32 LIB Debug" (based on "Win32 (x86) Console Application")
+!MESSAGE
+
+# Begin Project
+# PROP AllowPerConfigDependencies 0
+# PROP Scc_ProjName ""
+# PROP Scc_LocalPath ""
+CPP=cl.exe
+RSC=rc.exe
+
+!IF "$(CFG)" == "pngtest - Win32 DLL Release"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 0
+# PROP BASE Output_Dir "pngtest___Win32_DLL_Release"
+# PROP BASE Intermediate_Dir "pngtest___Win32_DLL_Release"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 0
+# PROP Output_Dir "Win32_DLL_Release"
+# PROP Intermediate_Dir "Win32_DLL_Release"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /W3 /O2 /D "WIN32" /D "NDEBUG" /FD /c
+# SUBTRACT BASE CPP /YX
+# ADD CPP /nologo /MD /W3 /O2 /I "..\..\..\zlib" /D "WIN32" /D "NDEBUG" /D "PNG_DLL" /D "PNG_NO_STDIO" /FD /c
+# SUBTRACT CPP /YX
+# ADD BASE RSC /l 0x409 /d "NDEBUG"
+# ADD RSC /l 0x409 /d "NDEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LINK32=link.exe
+# ADD BASE LINK32 /nologo /subsystem:console /machine:I386
+# ADD LINK32 Win32_DLL_Release\libpng14.lib ..\..\..\zlib\projects\visualc6\Win32_DLL_Release\zlib1.lib /nologo /subsystem:console /machine:I386
+# Begin Special Build Tool
+OutDir=.\Win32_DLL_Release
+SOURCE="$(InputPath)"
+PostBuild_Desc=[Run Test]
+PostBuild_Cmds=set path=$(outdir);..\..\..\zlib\projects\visualc6\Win32_DLL_Release; $(outdir)\pngtest.exe ..\..\pngtest.png
+# End Special Build Tool
+
+!ELSEIF "$(CFG)" == "pngtest - Win32 DLL Debug"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 1
+# PROP BASE Output_Dir "pngtest___Win32_DLL_Debug"
+# PROP BASE Intermediate_Dir "pngtest___Win32_DLL_Debug"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 1
+# PROP Output_Dir "Win32_DLL_Debug"
+# PROP Intermediate_Dir "Win32_DLL_Debug"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /W3 /Gm /ZI /Od /D "WIN32" /D "_DEBUG" /FD /GZ /c
+# SUBTRACT BASE CPP /YX
+# ADD CPP /nologo /MDd /W3 /Gm /ZI /Od /I "..\..\..\zlib" /D "WIN32" /D "_DEBUG" /D "PNG_DLL" /D "PNG_NO_STDIO" /FD /GZ /c
+# SUBTRACT CPP /YX
+# ADD BASE RSC /l 0x409 /d "_DEBUG"
+# ADD RSC /l 0x409 /d "_DEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LINK32=link.exe
+# ADD BASE LINK32 /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept
+# ADD LINK32 Win32_DLL_Debug\libpng14d.lib ..\..\..\zlib\projects\visualc6\Win32_DLL_Debug\zlib1d.lib /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept
+# Begin Special Build Tool
+OutDir=.\Win32_DLL_Debug
+SOURCE="$(InputPath)"
+PostBuild_Desc=[Run Test]
+PostBuild_Cmds=set path=$(outdir);..\..\..\zlib\projects\visualc6\Win32_DLL_Debug; $(outdir)\pngtest.exe ..\..\pngtest.png
+# End Special Build Tool
+
+!ELSEIF "$(CFG)" == "pngtest - Win32 LIB Release"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 0
+# PROP BASE Output_Dir "pngtest___Win32_LIB_Release"
+# PROP BASE Intermediate_Dir "pngtest___Win32_LIB_Release"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 0
+# PROP Output_Dir "Win32_LIB_Release"
+# PROP Intermediate_Dir "Win32_LIB_Release"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /W3 /O2 /D "WIN32" /D "NDEBUG" /FD /c
+# SUBTRACT BASE CPP /YX
+# ADD CPP /nologo /MD /W3 /O2 /I "..\..\..\zlib" /D "WIN32" /D "NDEBUG" /FD /c
+# SUBTRACT CPP /YX
+# ADD BASE RSC /l 0x409 /d "NDEBUG"
+# ADD RSC /l 0x409 /d "NDEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LINK32=link.exe
+# ADD BASE LINK32 /nologo /subsystem:console /machine:I386
+# ADD LINK32 Win32_LIB_Release\libpng.lib ..\..\..\zlib\projects\visualc6\Win32_LIB_Release\zlib.lib /nologo /subsystem:console /machine:I386
+# Begin Special Build Tool
+OutDir=.\Win32_LIB_Release
+SOURCE="$(InputPath)"
+PostBuild_Desc=[Run Test]
+PostBuild_Cmds=$(outdir)\pngtest.exe ..\..\pngtest.png
+# End Special Build Tool
+
+!ELSEIF "$(CFG)" == "pngtest - Win32 LIB Debug"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 1
+# PROP BASE Output_Dir "pngtest___Win32_LIB_Debug"
+# PROP BASE Intermediate_Dir "pngtest___Win32_LIB_Debug"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 1
+# PROP Output_Dir "Win32_LIB_Debug"
+# PROP Intermediate_Dir "Win32_LIB_Debug"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /W3 /Gm /ZI /Od /D "WIN32" /D "_DEBUG" /FD /GZ /c
+# SUBTRACT BASE CPP /YX
+# ADD CPP /nologo /MDd /W3 /Gm /ZI /Od /I "..\..\..\zlib" /D "WIN32" /D "_DEBUG" /FD /GZ /c
+# SUBTRACT CPP /YX
+# ADD BASE RSC /l 0x409 /d "_DEBUG"
+# ADD RSC /l 0x409 /d "_DEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LINK32=link.exe
+# ADD BASE LINK32 /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept
+# ADD LINK32 Win32_LIB_Debug\libpngd.lib ..\..\..\zlib\projects\visualc6\Win32_LIB_Debug\zlibd.lib /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept
+# Begin Special Build Tool
+OutDir=.\Win32_LIB_Debug
+SOURCE="$(InputPath)"
+PostBuild_Desc=[Run Test]
+PostBuild_Cmds=$(outdir)\pngtest.exe ..\..\pngtest.png
+# End Special Build Tool
+
+!ENDIF
+
+# Begin Target
+
+# Name "pngtest - Win32 DLL Release"
+# Name "pngtest - Win32 DLL Debug"
+# Name "pngtest - Win32 LIB Release"
+# Name "pngtest - Win32 LIB Debug"
+# Begin Group "Source Files"
+
+# PROP Default_Filter "cpp;c;cxx;rc;def;r;odl;idl;hpj;bat"
+# Begin Source File
+
+SOURCE=..\..\pngtest.c
+# End Source File
+# End Group
+# End Target
+# End Project
diff --git a/src/3rdparty/libpng/projects/visualc71/PRJ0041.mak b/src/3rdparty/libpng/projects/visualc71/PRJ0041.mak
new file mode 100644
index 0000000..e15e12b
--- /dev/null
+++ b/src/3rdparty/libpng/projects/visualc71/PRJ0041.mak
@@ -0,0 +1,21 @@
+# Prevent "Cannot find missing dependency..." warnings while compiling
+# pngwin.rc (PRJ0041).
+
+all: $(IntDir)\alloc.h \
+ $(IntDir)\fp.h \
+ $(IntDir)\m68881.h \
+ $(IntDir)\mem.h \
+ $(IntDir)\pngusr.h \
+ $(IntDir)\strings.h \
+ $(IntDir)\unistd.h \
+ $(IntDir)\unixio.h
+
+$(IntDir)\alloc.h \
+$(IntDir)\fp.h \
+$(IntDir)\m68881.h \
+$(IntDir)\mem.h \
+$(IntDir)\pngusr.h \
+$(IntDir)\strings.h \
+$(IntDir)\unistd.h \
+$(IntDir)\unixio.h:
+ @!echo.>$@
diff --git a/src/3rdparty/libpng/projects/visualc71/README.txt b/src/3rdparty/libpng/projects/visualc71/README.txt
new file mode 100644
index 0000000..7d51eed
--- /dev/null
+++ b/src/3rdparty/libpng/projects/visualc71/README.txt
@@ -0,0 +1,55 @@
+Microsoft Developer Studio Project File, Format Version 7.10 for libpng.
+
+Copyright (C) 2004 Simon-Pierre Cadieux.
+
+This code is released under the libpng license.
+For conditions of distribution and use, see copyright notice in png.h
+
+Assumptions:
+* The libpng source files are in ..\..
+* The zlib source files are in ..\..\..\zlib
+* The zlib project file is in . /* Warning: This is until the zlib project
+ files get intergrated into the next zlib release. The final zlib project
+ directory will then be ..\..\..\zlib\projects\visualc71. */
+
+To use:
+
+1) On the main menu, select "File | Open Solution".
+ Open "libpng.sln".
+
+2) Display the Solution Explorer view (Ctrl+Alt+L)
+
+3) Set one of the project as the StartUp project. If you just want to build the
+ binaries set "libpng" as the startup project (Select "libpng" tree view
+ item + Project | Set as StartUp project). If you want to build and test the
+ binaries set it to "pngtest" (Select "pngtest" tree view item +
+ Project | Set as StartUp project)
+
+4) Select "Build | Configuration Manager...".
+ Choose the configuration you wish to build.
+
+5) Select "Build | Clean Solution".
+
+6) Select "Build | Build Solution (Ctrl-Shift-B)"
+
+This project builds the libpng binaries as follows:
+
+* Win32_DLL_Release\libpng14.dll DLL build
+* Win32_DLL_Debug\libpng14d.dll DLL build (debug version)
+* Win32_DLL_VB\libpng14vb.dll DLL build for Visual Basic, using stdcall
+* Win32_LIB_Release\libpng.lib static build
+* Win32_LIB_Debug\libpngd.lib static build (debug version)
+
+Notes:
+
+If you change anything in the source files, or select different compiler
+settings, please change the DLL name to something different than any of
+the above names. Also, make sure that in your "pngusr.h" you define
+PNG_USER_PRIVATEBUILD and PNG_USER_DLLFNAME_POSTFIX according to the
+instructions provided in "pngconf.h".
+
+All DLLs built by this project use the Microsoft dynamic C runtime library
+MSVCR71.DLL (MSVCR71D.DLL for debug versions). If you distribute any of the
+above mentioned libraries you may have to include this DLL in your package.
+For a list of files that are redistributable in Visual Studio see
+$(VCINSTALLDIR)\redist.txt.
diff --git a/src/3rdparty/libpng/projects/visualc71/README_zlib.txt b/src/3rdparty/libpng/projects/visualc71/README_zlib.txt
new file mode 100644
index 0000000..cc73899
--- /dev/null
+++ b/src/3rdparty/libpng/projects/visualc71/README_zlib.txt
@@ -0,0 +1,42 @@
+/* WARNING: This file was put in the LibPNG distribution for convenience only.
+ It is expected to be part of the next zlib release under
+ "projects\visualc71\README.txt." */
+
+Microsoft Developer Studio Project File, Format Version 7.10 for zlib.
+
+Copyright (C) 2004 Simon-Pierre Cadieux.
+Copyright (C) 2004 Cosmin Truta.
+
+This code is released under the libpng license.
+For conditions of distribution and use, see copyright notice in zlib.h.
+
+
+To use:
+
+1) On the main menu, select "File | Open Solution".
+ Open "zlib.sln".
+
+2) Display the Solution Explorer view (Ctrl+Alt+L)
+
+3) Set one of the project as the StartUp project. If you just want to build the
+ binaries set "zlib" as the startup project (Select "zlib" tree view item +
+ Project | Set as StartUp project). If you want to build and test the
+ binaries set it to "example" (Select "example" tree view item + Project |
+ Set as StartUp project), If you want to build the minigzip utility set it to
+ "minigzip" (Select "minigzip" tree view item + Project | Set as StartUp
+ project
+
+4) Select "Build | Configuration Manager...".
+ Choose the configuration you wish to build.
+
+5) Select "Build | Clean Solution".
+
+6) Select "Build | Build Solution (Ctrl-Shift-B)"
+
+This project builds the zlib binaries as follows:
+
+* Win32_DLL_Release\zlib1.dll DLL build
+* Win32_DLL_Debug\zlib1d.dll DLL build (debug version)
+* Win32_LIB_Release\zlib.lib static build
+* Win32_LIB_Debug\zlibd.lib static build (debug version)
+
diff --git a/src/3rdparty/libpng/projects/xcode/Info.plist b/src/3rdparty/libpng/projects/xcode/Info.plist
new file mode 100644
index 0000000..0b525df
--- /dev/null
+++ b/src/3rdparty/libpng/projects/xcode/Info.plist
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+ <key>CFBundleDevelopmentRegion</key>
+ <string>English</string>
+ <key>CFBundleExecutable</key>
+ <string>libpng</string>
+ <key>CFBundleIconFile</key>
+ <string></string>
+ <key>CFBundleIdentifier</key>
+ <string>com.apple.carbonframeworktemplate</string>
+ <key>CFBundleInfoDictionaryVersion</key>
+ <string>6.0</string>
+ <key>CFBundlePackageType</key>
+ <string>FMWK</string>
+ <key>CFBundleSignature</key>
+ <string>????</string>
+ <key>CFBundleVersion</key>
+ <string>1.0</string>
+ <key>CFBundleShortVersionString</key>
+ <string>1.0</string>
+ <key>CSResourcesFileMapped</key>
+ <true/>
+</dict>
+</plist>
diff --git a/src/3rdparty/libpng/projects/xcode/README.txt b/src/3rdparty/libpng/projects/xcode/README.txt
new file mode 100644
index 0000000..440149d
--- /dev/null
+++ b/src/3rdparty/libpng/projects/xcode/README.txt
@@ -0,0 +1,9 @@
+The xcode project has not been entirely updated to libpng-1.4.0.
+
+It needs to *not* depend on pnggccrd.c or pngvcrd.c
+
+It needs to PNG_NO_PEDANTIC_WARNINGS in the CFLAGS while building
+the library, but not while building an application.
+
+If an updated version is not received, this project will
+be removed when libpng-1.4.0 is released.
diff --git a/src/3rdparty/libpng/projects/xcode/libpng.xcodeproj/.gitignore b/src/3rdparty/libpng/projects/xcode/libpng.xcodeproj/.gitignore
new file mode 100644
index 0000000..0a2b14b
--- /dev/null
+++ b/src/3rdparty/libpng/projects/xcode/libpng.xcodeproj/.gitignore
@@ -0,0 +1,2 @@
+*.mode1*
+*.pbxuser
diff --git a/src/3rdparty/libpng/projects/xcode/libpng.xcodeproj/project.pbxproj b/src/3rdparty/libpng/projects/xcode/libpng.xcodeproj/project.pbxproj
new file mode 100644
index 0000000..1171a39
--- /dev/null
+++ b/src/3rdparty/libpng/projects/xcode/libpng.xcodeproj/project.pbxproj
@@ -0,0 +1,353 @@
+// !$*UTF8*$!
+{
+ archiveVersion = 1;
+ classes = {
+ };
+ objectVersion = 44;
+ objects = {
+
+/* Begin PBXBuildFile section */
+ 14461C7109C3C37F005840C0 /* png.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C5D09C3C37F005840C0 /* png.c */; };
+ 14461C7209C3C37F005840C0 /* png.h in Headers */ = {isa = PBXBuildFile; fileRef = 14461C5E09C3C37F005840C0 /* png.h */; settings = {ATTRIBUTES = (Public, ); }; };
+ 14461C7309C3C37F005840C0 /* pngconf.h in Headers */ = {isa = PBXBuildFile; fileRef = 14461C5F09C3C37F005840C0 /* pngconf.h */; settings = {ATTRIBUTES = (Public, ); }; };
+ 14461C7409C3C37F005840C0 /* pngerror.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6009C3C37F005840C0 /* pngerror.c */; };
+ 14461C7509C3C37F005840C0 /* pnggccrd.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6109C3C37F005840C0 /* pnggccrd.c */; };
+ 14461C7609C3C37F005840C0 /* pngget.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6209C3C37F005840C0 /* pngget.c */; };
+ 14461C7709C3C37F005840C0 /* pngmem.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6309C3C37F005840C0 /* pngmem.c */; };
+ 14461C7809C3C37F005840C0 /* pngpread.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6409C3C37F005840C0 /* pngpread.c */; };
+ 14461C7909C3C37F005840C0 /* pngread.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6509C3C37F005840C0 /* pngread.c */; };
+ 14461C7A09C3C37F005840C0 /* pngrio.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6609C3C37F005840C0 /* pngrio.c */; };
+ 14461C7B09C3C37F005840C0 /* pngrtran.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6709C3C37F005840C0 /* pngrtran.c */; };
+ 14461C7C09C3C37F005840C0 /* pngrutil.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6809C3C37F005840C0 /* pngrutil.c */; };
+ 14461C7D09C3C37F005840C0 /* pngset.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6909C3C37F005840C0 /* pngset.c */; };
+ 14461C7F09C3C37F005840C0 /* pngtrans.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6B09C3C37F005840C0 /* pngtrans.c */; };
+ 14461C8009C3C37F005840C0 /* pngvcrd.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6C09C3C37F005840C0 /* pngvcrd.c */; };
+ 14461C8109C3C37F005840C0 /* pngwio.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6D09C3C37F005840C0 /* pngwio.c */; };
+ 14461C8209C3C37F005840C0 /* pngwrite.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6E09C3C37F005840C0 /* pngwrite.c */; };
+ 14461C8309C3C37F005840C0 /* pngwtran.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6F09C3C37F005840C0 /* pngwtran.c */; };
+ 14461C8409C3C37F005840C0 /* pngwutil.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C7009C3C37F005840C0 /* pngwutil.c */; };
+ 67FA470510693F6B0078FB9E /* pngpriv.h in Headers */ = {isa = PBXBuildFile; fileRef = 67FA470410693F6B0078FB9E /* pngpriv.h */; };
+/* End PBXBuildFile section */
+
+/* Begin PBXFileReference section */
+ 14461C5D09C3C37F005840C0 /* png.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = png.c; path = ../../png.c; sourceTree = SOURCE_ROOT; };
+ 14461C5E09C3C37F005840C0 /* png.h */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.h; name = png.h; path = ../../png.h; sourceTree = SOURCE_ROOT; };
+ 14461C5F09C3C37F005840C0 /* pngconf.h */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.h; name = pngconf.h; path = ../../pngconf.h; sourceTree = SOURCE_ROOT; };
+ 14461C6009C3C37F005840C0 /* pngerror.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngerror.c; path = ../../pngerror.c; sourceTree = SOURCE_ROOT; };
+ 14461C6109C3C37F005840C0 /* pnggccrd.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pnggccrd.c; path = ../../pnggccrd.c; sourceTree = SOURCE_ROOT; };
+ 14461C6209C3C37F005840C0 /* pngget.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngget.c; path = ../../pngget.c; sourceTree = SOURCE_ROOT; };
+ 14461C6309C3C37F005840C0 /* pngmem.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngmem.c; path = ../../pngmem.c; sourceTree = SOURCE_ROOT; };
+ 14461C6409C3C37F005840C0 /* pngpread.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngpread.c; path = ../../pngpread.c; sourceTree = SOURCE_ROOT; };
+ 14461C6509C3C37F005840C0 /* pngread.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngread.c; path = ../../pngread.c; sourceTree = SOURCE_ROOT; };
+ 14461C6609C3C37F005840C0 /* pngrio.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngrio.c; path = ../../pngrio.c; sourceTree = SOURCE_ROOT; };
+ 14461C6709C3C37F005840C0 /* pngrtran.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngrtran.c; path = ../../pngrtran.c; sourceTree = SOURCE_ROOT; };
+ 14461C6809C3C37F005840C0 /* pngrutil.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngrutil.c; path = ../../pngrutil.c; sourceTree = SOURCE_ROOT; };
+ 14461C6909C3C37F005840C0 /* pngset.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngset.c; path = ../../pngset.c; sourceTree = SOURCE_ROOT; };
+ 14461C6B09C3C37F005840C0 /* pngtrans.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngtrans.c; path = ../../pngtrans.c; sourceTree = SOURCE_ROOT; };
+ 14461C6C09C3C37F005840C0 /* pngvcrd.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngvcrd.c; path = ../../pngvcrd.c; sourceTree = SOURCE_ROOT; };
+ 14461C6D09C3C37F005840C0 /* pngwio.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngwio.c; path = ../../pngwio.c; sourceTree = SOURCE_ROOT; };
+ 14461C6E09C3C37F005840C0 /* pngwrite.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngwrite.c; path = ../../pngwrite.c; sourceTree = SOURCE_ROOT; };
+ 14461C6F09C3C37F005840C0 /* pngwtran.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngwtran.c; path = ../../pngwtran.c; sourceTree = SOURCE_ROOT; };
+ 14461C7009C3C37F005840C0 /* pngwutil.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngwutil.c; path = ../../pngwutil.c; sourceTree = SOURCE_ROOT; };
+ 67FA470410693F6B0078FB9E /* pngpriv.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = pngpriv.h; path = ../../pngpriv.h; sourceTree = SOURCE_ROOT; };
+ 8D07F2C70486CC7A007CD1D0 /* Info.plist */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.plist; path = Info.plist; sourceTree = "<group>"; };
+ 8D07F2C80486CC7A007CD1D0 /* libpng.framework */ = {isa = PBXFileReference; explicitFileType = wrapper.framework; includeInIndex = 0; path = libpng.framework; sourceTree = BUILT_PRODUCTS_DIR; };
+/* End PBXFileReference section */
+
+/* Begin PBXFrameworksBuildPhase section */
+ 8D07F2C30486CC7A007CD1D0 /* Frameworks */ = {
+ isa = PBXFrameworksBuildPhase;
+ buildActionMask = 2147483647;
+ files = (
+ );
+ runOnlyForDeploymentPostprocessing = 0;
+ };
+/* End PBXFrameworksBuildPhase section */
+
+/* Begin PBXGroup section */
+ 034768DDFF38A45A11DB9C8B /* Products */ = {
+ isa = PBXGroup;
+ children = (
+ 8D07F2C80486CC7A007CD1D0 /* libpng.framework */,
+ );
+ name = Products;
+ sourceTree = "<group>";
+ };
+ 0867D691FE84028FC02AAC07 /* libpng */ = {
+ isa = PBXGroup;
+ children = (
+ 08FB77ACFE841707C02AAC07 /* Source */,
+ 089C1665FE841158C02AAC07 /* Resources */,
+ 034768DDFF38A45A11DB9C8B /* Products */,
+ );
+ name = libpng;
+ sourceTree = "<group>";
+ };
+ 089C1665FE841158C02AAC07 /* Resources */ = {
+ isa = PBXGroup;
+ children = (
+ 8D07F2C70486CC7A007CD1D0 /* Info.plist */,
+ );
+ name = Resources;
+ sourceTree = "<group>";
+ };
+ 08FB77ACFE841707C02AAC07 /* Source */ = {
+ isa = PBXGroup;
+ children = (
+ 67FA470410693F6B0078FB9E /* pngpriv.h */,
+ 14461C5D09C3C37F005840C0 /* png.c */,
+ 14461C5E09C3C37F005840C0 /* png.h */,
+ 14461C5F09C3C37F005840C0 /* pngconf.h */,
+ 14461C6009C3C37F005840C0 /* pngerror.c */,
+ 14461C6109C3C37F005840C0 /* pnggccrd.c */,
+ 14461C6209C3C37F005840C0 /* pngget.c */,
+ 14461C6309C3C37F005840C0 /* pngmem.c */,
+ 14461C6409C3C37F005840C0 /* pngpread.c */,
+ 14461C6509C3C37F005840C0 /* pngread.c */,
+ 14461C6609C3C37F005840C0 /* pngrio.c */,
+ 14461C6709C3C37F005840C0 /* pngrtran.c */,
+ 14461C6809C3C37F005840C0 /* pngrutil.c */,
+ 14461C6909C3C37F005840C0 /* pngset.c */,
+ 14461C6B09C3C37F005840C0 /* pngtrans.c */,
+ 14461C6C09C3C37F005840C0 /* pngvcrd.c */,
+ 14461C6D09C3C37F005840C0 /* pngwio.c */,
+ 14461C6E09C3C37F005840C0 /* pngwrite.c */,
+ 14461C6F09C3C37F005840C0 /* pngwtran.c */,
+ 14461C7009C3C37F005840C0 /* pngwutil.c */,
+ );
+ name = Source;
+ sourceTree = "<group>";
+ };
+/* End PBXGroup section */
+
+/* Begin PBXHeadersBuildPhase section */
+ 8D07F2BD0486CC7A007CD1D0 /* Headers */ = {
+ isa = PBXHeadersBuildPhase;
+ buildActionMask = 2147483647;
+ files = (
+ 14461C7209C3C37F005840C0 /* png.h in Headers */,
+ 14461C7309C3C37F005840C0 /* pngconf.h in Headers */,
+ 67FA470510693F6B0078FB9E /* pngpriv.h in Headers */,
+ );
+ runOnlyForDeploymentPostprocessing = 0;
+ };
+/* End PBXHeadersBuildPhase section */
+
+/* Begin PBXNativeTarget section */
+ 8D07F2BC0486CC7A007CD1D0 /* libpng */ = {
+ isa = PBXNativeTarget;
+ buildConfigurationList = 4FADC24208B4156D00ABE55E /* Build configuration list for PBXNativeTarget "libpng" */;
+ buildPhases = (
+ 8D07F2BD0486CC7A007CD1D0 /* Headers */,
+ 8D07F2BF0486CC7A007CD1D0 /* Resources */,
+ 8D07F2C10486CC7A007CD1D0 /* Sources */,
+ 8D07F2C30486CC7A007CD1D0 /* Frameworks */,
+ 8D07F2C50486CC7A007CD1D0 /* Rez */,
+ );
+ buildRules = (
+ );
+ dependencies = (
+ );
+ name = libpng;
+ productInstallPath = "$(HOME)/Library/Frameworks";
+ productName = libpng;
+ productReference = 8D07F2C80486CC7A007CD1D0 /* libpng.framework */;
+ productType = "com.apple.product-type.framework";
+ };
+/* End PBXNativeTarget section */
+
+/* Begin PBXProject section */
+ 0867D690FE84028FC02AAC07 /* Project object */ = {
+ isa = PBXProject;
+ buildConfigurationList = 4FADC24608B4156D00ABE55E /* Build configuration list for PBXProject "libpng" */;
+ compatibilityVersion = "Xcode 2.4";
+ hasScannedForEncodings = 1;
+ mainGroup = 0867D691FE84028FC02AAC07 /* libpng */;
+ productRefGroup = 034768DDFF38A45A11DB9C8B /* Products */;
+ projectDirPath = "";
+ projectRoot = ../..;
+ targets = (
+ 8D07F2BC0486CC7A007CD1D0 /* libpng */,
+ );
+ };
+/* End PBXProject section */
+
+/* Begin PBXResourcesBuildPhase section */
+ 8D07F2BF0486CC7A007CD1D0 /* Resources */ = {
+ isa = PBXResourcesBuildPhase;
+ buildActionMask = 2147483647;
+ files = (
+ );
+ runOnlyForDeploymentPostprocessing = 0;
+ };
+/* End PBXResourcesBuildPhase section */
+
+/* Begin PBXRezBuildPhase section */
+ 8D07F2C50486CC7A007CD1D0 /* Rez */ = {
+ isa = PBXRezBuildPhase;
+ buildActionMask = 2147483647;
+ files = (
+ );
+ runOnlyForDeploymentPostprocessing = 0;
+ };
+/* End PBXRezBuildPhase section */
+
+/* Begin PBXSourcesBuildPhase section */
+ 8D07F2C10486CC7A007CD1D0 /* Sources */ = {
+ isa = PBXSourcesBuildPhase;
+ buildActionMask = 2147483647;
+ files = (
+ 14461C7109C3C37F005840C0 /* png.c in Sources */,
+ 14461C7409C3C37F005840C0 /* pngerror.c in Sources */,
+ 14461C7509C3C37F005840C0 /* pnggccrd.c in Sources */,
+ 14461C7609C3C37F005840C0 /* pngget.c in Sources */,
+ 14461C7709C3C37F005840C0 /* pngmem.c in Sources */,
+ 14461C7809C3C37F005840C0 /* pngpread.c in Sources */,
+ 14461C7909C3C37F005840C0 /* pngread.c in Sources */,
+ 14461C7A09C3C37F005840C0 /* pngrio.c in Sources */,
+ 14461C7B09C3C37F005840C0 /* pngrtran.c in Sources */,
+ 14461C7C09C3C37F005840C0 /* pngrutil.c in Sources */,
+ 14461C7D09C3C37F005840C0 /* pngset.c in Sources */,
+ 14461C7F09C3C37F005840C0 /* pngtrans.c in Sources */,
+ 14461C8009C3C37F005840C0 /* pngvcrd.c in Sources */,
+ 14461C8109C3C37F005840C0 /* pngwio.c in Sources */,
+ 14461C8209C3C37F005840C0 /* pngwrite.c in Sources */,
+ 14461C8309C3C37F005840C0 /* pngwtran.c in Sources */,
+ 14461C8409C3C37F005840C0 /* pngwutil.c in Sources */,
+ );
+ runOnlyForDeploymentPostprocessing = 0;
+ };
+/* End PBXSourcesBuildPhase section */
+
+/* Begin XCBuildConfiguration section */
+ 4FADC24308B4156D00ABE55E /* Debug */ = {
+ isa = XCBuildConfiguration;
+ buildSettings = {
+ COPY_PHASE_STRIP = NO;
+ DYLIB_COMPATIBILITY_VERSION = 14;
+ DYLIB_CURRENT_VERSION = 14;
+ FRAMEWORK_VERSION = 1.4.0;
+ GCC_PRECOMPILE_PREFIX_HEADER = NO;
+ GCC_PREFIX_HEADER = "";
+ INFOPLIST_FILE = Info.plist;
+ INSTALL_PATH = "@executable_path/../Frameworks";
+ LIBRARY_STYLE = DYNAMIC;
+ MACH_O_TYPE = mh_dylib;
+ OTHER_LDFLAGS = "-lz";
+ PRODUCT_NAME = libpng;
+ WRAPPER_EXTENSION = framework;
+ };
+ name = Debug;
+ };
+ 4FADC24408B4156D00ABE55E /* Release */ = {
+ isa = XCBuildConfiguration;
+ buildSettings = {
+ DYLIB_COMPATIBILITY_VERSION = 14;
+ DYLIB_CURRENT_VERSION = 14;
+ FRAMEWORK_VERSION = 1.4.0;
+ GCC_PRECOMPILE_PREFIX_HEADER = NO;
+ GCC_PREFIX_HEADER = "";
+ INFOPLIST_FILE = Info.plist;
+ INSTALL_PATH = "@executable_path/../Frameworks";
+ LIBRARY_STYLE = DYNAMIC;
+ MACH_O_TYPE = mh_dylib;
+ OTHER_LDFLAGS = "-lz";
+ PRODUCT_NAME = libpng;
+ WRAPPER_EXTENSION = framework;
+ };
+ name = Release;
+ };
+ 4FADC24708B4156D00ABE55E /* Debug */ = {
+ isa = XCBuildConfiguration;
+ buildSettings = {
+ ARCHS = (
+ i386,
+ ppc,
+ ppc64,
+ x86_64,
+ );
+ DEPLOYMENT_POSTPROCESSING = YES;
+ GCC_ENABLE_CPP_EXCEPTIONS = NO;
+ GCC_ENABLE_CPP_RTTI = NO;
+ GCC_ENABLE_FIX_AND_CONTINUE = YES;
+ GCC_GENERATE_DEBUGGING_SYMBOLS = YES;
+ GCC_OPTIMIZATION_LEVEL = 0;
+ GCC_TREAT_IMPLICIT_FUNCTION_DECLARATIONS_AS_ERRORS = YES;
+ GCC_VERSION_i386 = 4.0;
+ GCC_VERSION_ppc = 3.3;
+ GCC_WARN_ABOUT_RETURN_TYPE = YES;
+ GCC_WARN_UNUSED_VARIABLE = YES;
+ MACOSX_DEPLOYMENT_TARGET = 10.5;
+ "MACOSX_DEPLOYMENT_TARGET[arch=i386]" = 10.4;
+ "MACOSX_DEPLOYMENT_TARGET[arch=ppc]" = 10.2;
+ MACOSX_DEPLOYMENT_TARGET_i386 = 10.4;
+ MACOSX_DEPLOYMENT_TARGET_ppc = 10.2;
+ PREBINDING = NO;
+ SDKROOT = "$(DEVELOPER_SDK_DIR)/MacOSX10.5.sdk";
+ "SDKROOT[arch=i386]" = "$(DEVELOPER_SDK_DIR)/MacOSX10.4u.sdk";
+ "SDKROOT[arch=ppc]" = "$(DEVELOPER_SDK_DIR)/MacOSX10.3.9.sdk";
+ SDKROOT_i386 = "$(DEVELOPER_SDK_DIR)/MacOSX10.4u.sdk";
+ SDKROOT_ppc = "$(DEVELOPER_SDK_DIR)/MacOSX10.3.9.sdk";
+ ZERO_LINK = NO;
+ };
+ name = Debug;
+ };
+ 4FADC24808B4156D00ABE55E /* Release */ = {
+ isa = XCBuildConfiguration;
+ buildSettings = {
+ ARCHS = (
+ i386,
+ ppc,
+ ppc64,
+ x86_64,
+ );
+ GCC_ENABLE_CPP_EXCEPTIONS = NO;
+ GCC_ENABLE_CPP_RTTI = NO;
+ GCC_ENABLE_FIX_AND_CONTINUE = NO;
+ GCC_GENERATE_DEBUGGING_SYMBOLS = NO;
+ GCC_OPTIMIZATION_LEVEL = 2;
+ GCC_TREAT_IMPLICIT_FUNCTION_DECLARATIONS_AS_ERRORS = YES;
+ GCC_VERSION_i386 = 4.0;
+ GCC_VERSION_ppc = 3.3;
+ GCC_WARN_ABOUT_RETURN_TYPE = YES;
+ GCC_WARN_UNUSED_VARIABLE = YES;
+ MACOSX_DEPLOYMENT_TARGET = 10.5;
+ "MACOSX_DEPLOYMENT_TARGET[arch=i386]" = 10.4;
+ "MACOSX_DEPLOYMENT_TARGET[arch=ppc]" = 10.2;
+ MACOSX_DEPLOYMENT_TARGET_i386 = 10.4;
+ MACOSX_DEPLOYMENT_TARGET_ppc = 10.2;
+ PREBINDING = NO;
+ SDKROOT = "$(DEVELOPER_SDK_DIR)/MacOSX10.5.sdk";
+ "SDKROOT[arch=i386]" = "$(DEVELOPER_SDK_DIR)/MacOSX10.4u.sdk";
+ "SDKROOT[arch=ppc]" = "$(DEVELOPER_SDK_DIR)/MacOSX10.3.9.sdk";
+ SDKROOT_i386 = "$(DEVELOPER_SDK_DIR)/MacOSX10.4u.sdk";
+ SDKROOT_ppc = "$(DEVELOPER_SDK_DIR)/MacOSX10.3.9.sdk";
+ ZERO_LINK = NO;
+ };
+ name = Release;
+ };
+/* End XCBuildConfiguration section */
+
+/* Begin XCConfigurationList section */
+ 4FADC24208B4156D00ABE55E /* Build configuration list for PBXNativeTarget "libpng" */ = {
+ isa = XCConfigurationList;
+ buildConfigurations = (
+ 4FADC24308B4156D00ABE55E /* Debug */,
+ 4FADC24408B4156D00ABE55E /* Release */,
+ );
+ defaultConfigurationIsVisible = 0;
+ defaultConfigurationName = Release;
+ };
+ 4FADC24608B4156D00ABE55E /* Build configuration list for PBXProject "libpng" */ = {
+ isa = XCConfigurationList;
+ buildConfigurations = (
+ 4FADC24708B4156D00ABE55E /* Debug */,
+ 4FADC24808B4156D00ABE55E /* Release */,
+ );
+ defaultConfigurationIsVisible = 0;
+ defaultConfigurationName = Release;
+ };
+/* End XCConfigurationList section */
+ };
+ rootObject = 0867D690FE84028FC02AAC07 /* Project object */;
+}
diff --git a/src/3rdparty/libpng/scripts/README.txt b/src/3rdparty/libpng/scripts/README.txt
new file mode 100644
index 0000000..fa7ffed
--- /dev/null
+++ b/src/3rdparty/libpng/scripts/README.txt
@@ -0,0 +1,67 @@
+
+Makefiles for libpng version 1.4.0 - January 3, 2010
+
+ makefile.linux => Linux/ELF makefile
+ (gcc, creates libpng14.so.14.1.4.0)
+ makefile.gcc => Generic makefile (gcc, creates static libpng.a)
+ makefile.knr => Archaic UNIX Makefile that converts files with
+ ansi2knr (Requires ansi2knr.c from
+ ftp://ftp.cs.wisc.edu/ghost)
+ makefile.acorn => Acorn makefile
+ makefile.aix => AIX/gcc makefile
+ makefile.amiga => Amiga makefile
+ makefile.atari => Atari makefile
+ makefile.bc32 => 32-bit Borland C++ (all modules compiled in C mode)
+ makefile.beos => beos makefile
+ makefile.bor => Borland makefile (uses bcc)
+ makefile.cegcc => minge32ce for Windows CE makefile
+ makefile.cygwin => Cygwin/gcc makefile
+ makefile.darwin => Darwin makefile, can use on MacosX
+ makefile.dec => DEC Alpha UNIX makefile
+ makefile.dj2 => DJGPP 2 makefile
+ makefile.elf => Linux/ELF makefile symbol versioning,
+ gcc, creates libpng14.so.14.1.4.0)
+ makefile.freebsd => FreeBSD makefile
+ makefile.gcc => Generic gcc makefile
+ makefile.hpgcc => HPUX makefile using gcc
+ makefile.hpux => HPUX (10.20 and 11.00) makefile
+ makefile.hp64 => HPUX (10.20 and 11.00) makefile, 64-bit
+ makefile.ibmc => IBM C/C++ version 3.x for Win32 and OS/2 (static)
+ makefile.intel => Intel C/C++ version 4.0 and later
+ makefile.mingw => Mingw makefile
+ makefile.mips => MIPS makefile
+ makefile.msc => Microsoft C makefile
+ makefile.netbsd => NetBSD/cc makefile, makes libpng.so.
+ makefile.openbsd => OpenBSD makefile
+ makefile.os2 => OS/2 Makefile (gcc and emx, requires pngos2.def)
+ makefile.sco => For SCO OSr5 ELF and Unixware 7 with Native cc
+ makefile.sggcc => Silicon Graphics (gcc,
+ creates libpng14.so.14.1.4.0)
+ makefile.sgi => Silicon Graphics IRIX makefile (cc, creates static lib)
+ makefile.solaris => Solaris 2.X makefile (gcc,
+ creates libpng14.so.14.1.4.0)
+ makefile.so9 => Solaris 9 makefile (gcc,
+ creates libpng14.so.14.1.4.0)
+ makefile.std => Generic UNIX makefile (cc, creates static libpng.a)
+ makefile.sunos => Sun makefile
+ makefile.32sunu => Sun Ultra 32-bit makefile
+ makefile.64sunu => Sun Ultra 64-bit makefile
+ makefile.tc3 => Turbo C 3.0 makefile
+ makefile.vcwin32 => makefile for Microsoft Visual C++ 4.0 and later
+ makefile.watcom => Watcom 10a+ Makefile, 32-bit flat memory model
+ makevms.com => VMS build script
+ smakefile.ppc => AMIGA smakefile for SAS C V6.58/7.00 PPC compiler
+ (Requires SCOPTIONS, copied from scripts/SCOPTIONS.ppc)
+
+Other supporting scripts:
+ descrip.mms => VMS makefile for MMS or MMK
+ libpng-config-body.in => used by several makefiles to create libpng-config
+ libpng-config-head.in => used by several makefiles to create libpng-config
+ libpng.pc.in => Used by several makefiles to create libpng.pc
+ pngos2.def => OS/2 module definition file used by makefile.os2
+ pngwin.def => Module definitions for makefile.cygwin and mingw
+ png32ce.def => Module definition file used by makefile.cegcc
+ pngwin.rc => Used by the visualc6 and visualc71 projects.
+ SCOPTIONS.ppc => Used with smakefile.ppc
+
+Further information can be found in comments in the individual makefiles.
diff --git a/src/3rdparty/libpng/scripts/SCOPTIONS.ppc b/src/3rdparty/libpng/scripts/SCOPTIONS.ppc
new file mode 100644
index 0000000..2c3503e
--- /dev/null
+++ b/src/3rdparty/libpng/scripts/SCOPTIONS.ppc
@@ -0,0 +1,7 @@
+OPTIMIZE
+OPTPEEP
+OPTTIME
+OPTSCHED
+AUTOREGISTER
+PARMS=REGISTERS
+INCLUDEDIR=hlp:ppc/include
diff --git a/src/3rdparty/libpng/scripts/descrip.mms b/src/3rdparty/libpng/scripts/descrip.mms
new file mode 100644
index 0000000..d0642c0
--- /dev/null
+++ b/src/3rdparty/libpng/scripts/descrip.mms
@@ -0,0 +1,52 @@
+
+cc_defs = /inc=$(ZLIBSRC)
+c_deb =
+
+.ifdef __DECC__
+pref = /prefix=all
+.endif
+
+
+
+OBJS = png.obj, pngset.obj, pngget.obj, pngrutil.obj, pngtrans.obj,\
+ pngwutil.obj, pngread.obj, pngmem.obj, pngwrite.obj, pngrtran.obj,\
+ pngwtran.obj, pngrio.obj, pngwio.obj, pngerror.obj, pngpread.obj
+
+
+CFLAGS= $(C_DEB) $(CC_DEFS) $(PREF)
+
+all : pngtest.exe libpng.olb
+ @ write sys$output " pngtest available"
+
+libpng.olb : libpng.olb($(OBJS))
+ @ write sys$output " Libpng available"
+
+
+pngtest.exe : pngtest.obj libpng.olb
+ link pngtest,libpng.olb/lib,$(ZLIBSRC)libz.olb/lib
+
+test : pngtest.exe
+ run pngtest
+
+clean :
+ delete *.obj;*,*.exe;
+
+
+# Other dependencies.
+png.obj : png.h, pngconf.h, pngpriv.h
+pngpread.obj : png.h, pngconf.h, pngpriv.h
+pngset.obj : png.h, pngconf.h, pngpriv.h
+pngget.obj : png.h, pngconf.h, pngpriv.h
+pngread.obj : png.h, pngconf.h, pngpriv.h
+pngrtran.obj : png.h, pngconf.h, pngpriv.h
+pngrutil.obj : png.h, pngconf.h, pngpriv.h
+pngerror.obj : png.h, pngconf.h, pngpriv.h
+pngmem.obj : png.h, pngconf.h, pngpriv.h
+pngrio.obj : png.h, pngconf.h, pngpriv.h
+pngwio.obj : png.h, pngconf.h, pngpriv.h
+pngtrans.obj : png.h, pngconf.h, pngpriv.h
+pngwrite.obj : png.h, pngconf.h, pngpriv.h
+pngwtran.obj : png.h, pngconf.h, pngpriv.h
+pngwutil.obj : png.h, pngconf.h, pngpriv.h
+
+pngtest.obj : png.h, pngconf.h
diff --git a/src/3rdparty/libpng/scripts/libpng-config-body.in b/src/3rdparty/libpng/scripts/libpng-config-body.in
new file mode 100755
index 0000000..b466432
--- /dev/null
+++ b/src/3rdparty/libpng/scripts/libpng-config-body.in
@@ -0,0 +1,96 @@
+
+usage()
+{
+ cat <<EOF
+Usage: libpng-config [OPTION] ...
+
+Known values for OPTION are:
+
+ --prefix print libpng prefix
+ --libdir print path to directory containing library
+ --libs print library linking information
+ --ccopts print compiler options
+ --cppflags print pre-processor flags
+ --cflags print preprocessor flags, I_opts, and compiler options
+ --I_opts print "-I" include options
+ --L_opts print linker "-L" flags for dynamic linking
+ --R_opts print dynamic linker "-R" or "-rpath" flags
+ --ldopts print linker options
+ --ldflags print linker flags (ldopts, L_opts, R_opts, and libs)
+ --static revise subsequent outputs for static linking
+ --help print this help and exit
+ --version print version information
+EOF
+
+ exit $1
+}
+
+if test $# -eq 0; then
+ usage 1
+fi
+
+while test $# -gt 0; do
+ case "$1" in
+
+ --prefix)
+ echo ${prefix}
+ ;;
+
+ --version)
+ echo ${version}
+ exit 0
+ ;;
+
+ --help)
+ usage 0
+ ;;
+
+ --ccopts)
+ echo ${ccopts}
+ ;;
+
+ --cppflags)
+ echo ${cppflags}
+ ;;
+
+ --cflags)
+ echo ${I_opts} ${cppflags} ${ccopts}
+ ;;
+
+ --libdir)
+ echo ${libdir}
+ ;;
+
+ --libs)
+ echo ${libs}
+ ;;
+
+ --I_opts)
+ echo ${I_opts}
+ ;;
+
+ --L_opts)
+ echo ${L_opts}
+ ;;
+
+ --R_opts)
+ echo ${R_opts}
+ ;;
+
+ --ldflags)
+ echo ${ldflags} ${L_opts} ${R_opts} ${libs}
+ ;;
+
+ --static)
+ R_opts=""
+ ;;
+
+ *)
+ usage
+ exit 1
+ ;;
+ esac
+ shift
+done
+
+exit 0
diff --git a/src/3rdparty/libpng/scripts/libpng-config-head.in b/src/3rdparty/libpng/scripts/libpng-config-head.in
new file mode 100755
index 0000000..01e7254
--- /dev/null
+++ b/src/3rdparty/libpng/scripts/libpng-config-head.in
@@ -0,0 +1,24 @@
+#! /bin/sh
+
+# libpng-config
+# provides configuration info for libpng.
+
+# Copyright (C) 2002 Glenn Randers-Pehrson
+
+# This code is released under the libpng license.
+# For conditions of distribution and use, see the disclaimer
+# and license in png.h
+
+# Modeled after libxml-config.
+
+version=1.4.0
+prefix=""
+libdir=""
+libs=""
+I_opts=""
+L_opts=""
+R_opts=""
+cppflags=""
+ccopts=""
+ldopts=""
+
diff --git a/src/3rdparty/libpng/scripts/libpng.pc.in b/src/3rdparty/libpng/scripts/libpng.pc.in
new file mode 100644
index 0000000..573df5a
--- /dev/null
+++ b/src/3rdparty/libpng/scripts/libpng.pc.in
@@ -0,0 +1,10 @@
+prefix=@prefix@
+exec_prefix=@exec_prefix@
+libdir=@libdir@
+includedir=@includedir@/libpng14
+
+Name: libpng
+Description: Loads and saves PNG files
+Version: 1.4.0
+Libs: -L${libdir} -lpng14
+Cflags: -I${includedir}
diff --git a/src/3rdparty/libpng/scripts/makefile.32sunu b/src/3rdparty/libpng/scripts/makefile.32sunu
new file mode 100644
index 0000000..3ae51f6
--- /dev/null
+++ b/src/3rdparty/libpng/scripts/makefile.32sunu
@@ -0,0 +1,257 @@
+# makefile for libpng on Solaris 2.x with cc
+# Contributed by William L. Sebok, based on makefile.linux
+# Copyright (C) 2002, 2006 Glenn Randers-Pehrson
+# Copyright (C) 1998 Greg Roelofs
+# Copyright (C) 1996, 1997 Andreas Dilger
+
+# This code is released under the libpng license.
+# For conditions of distribution and use, see the disclaimer
+# and license in png.h
+
+# Library name:
+LIBNAME=libpng14
+PNGMAJ = 14
+PNGMIN = 1.4.0
+PNGVER = $(PNGMAJ).$(PNGMIN)
+
+# Shared library names:
+LIBSO=$(LIBNAME).so
+LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
+LIBSOVER=$(LIBNAME).so.$(PNGVER)
+OLDSO=libpng.so
+OLDSOMAJ=libpng.so.14
+OLDSOVER=libpng.so.14.$(PNGMIN)
+
+# Utilities:
+CC=cc
+AR_RC=ar rc
+MKDIR_P=mkdir -p
+LN_SF=ln -f -s
+RANLIB=echo
+RM_F=/bin/rm -f
+
+SUN_CC_FLAGS=-fast -xtarget=ultra
+SUN_LD_FLAGS=-fast -xtarget=ultra
+
+# where make install puts libpng.a, libpng14.so and libpng14/png.h
+prefix=/a
+exec_prefix=$(prefix)
+
+# Where the zlib library and include files are located
+# Changing these to ../zlib poses a security risk. If you want
+# to have zlib in an adjacent directory, specify the full path instead of "..".
+#ZLIBLIB=../zlib
+#ZLIBINC=../zlib
+
+ZLIBLIB=/usr/lib
+ZLIBINC=/usr/include
+
+WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
+ -Wmissing-declarations -Wtraditional -Wcast-align \
+ -Wstrict-prototypes -Wmissing-prototypes #-Wconversion
+CFLAGS=-I$(ZLIBINC) $(SUN_CC_FLAGS) \
+ # $(WARNMORE) -g -DPNG_DEBUG=5
+LDFLAGS=$(SUN_LD_FLAGS) -L$(ZLIBLIB) -R$(ZLIBLIB) libpng.a -lz -lm
+
+INCPATH=$(prefix)/include
+LIBPATH=$(exec_prefix)/lib
+MANPATH=$(prefix)/man
+BINPATH=$(exec_prefix)/bin
+
+# override DESTDIR= on the make install command line to easily support
+# installing into a temporary location. Example:
+#
+# make install DESTDIR=/tmp/build/libpng
+#
+# If you're going to install into a temporary location
+# via DESTDIR, $(DESTDIR)$(prefix) must already exist before
+# you execute make install.
+DESTDIR=
+
+DB=$(DESTDIR)$(BINPATH)
+DI=$(DESTDIR)$(INCPATH)
+DL=$(DESTDIR)$(LIBPATH)
+DM=$(DESTDIR)$(MANPATH)
+
+OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
+ pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
+ pngwtran.o pngmem.o pngerror.o pngpread.o
+
+OBJSDLL = $(OBJS:.o=.pic.o)
+
+.SUFFIXES: .c .o .pic.o
+
+.c.pic.o:
+ $(CC) -c $(CFLAGS) -KPIC -o $@ $*.c
+
+all: libpng.a $(LIBSO) pngtest libpng.pc libpng-config
+
+libpng.a: $(OBJS)
+ $(AR_RC) $@ $(OBJS)
+ $(RANLIB) $@
+
+libpng.pc:
+ cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
+ -e s!@exec_prefix@!$(exec_prefix)! \
+ -e s!@libdir@!$(LIBPATH)! \
+ -e s!@includedir@!$(INCPATH)! \
+ -e s!-lpng14!-lpng14\ -lz\ -lm! > libpng.pc
+
+libpng-config:
+ ( cat scripts/libpng-config-head.in; \
+ echo prefix=\"$(prefix)\"; \
+ echo libdir=\"$(LIBPATH)\"; \
+ echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
+ echo L_opts=\"-L$(LIBPATH)\"; \
+ echo R_opts=\"-R$(LIBPATH)\"; \
+ echo ccopts=\"-xtarget=ultra\"; \
+ echo ldopts=\"-xtarget=ultra\"; \
+ echo libs=\"-lpng14 -lz -lm\"; \
+ cat scripts/libpng-config-body.in ) > libpng-config
+ chmod +x libpng-config
+
+$(LIBSO): $(LIBSOMAJ)
+ $(LN_SF) $(LIBSOMAJ) $(LIBSO)
+
+$(LIBSOMAJ): $(LIBSOVER)
+ $(LN_SF) $(LIBSOVER) $(LIBSOMAJ)
+
+$(LIBSOVER): $(OBJSDLL)
+ @case "`type ld`" in *ucb*) \
+ echo; \
+ echo '## WARNING:'; \
+ echo '## The commands "CC" and "LD" must NOT refer to /usr/ucb/cc'; \
+ echo '## and /usr/ucb/ld. If they do, you need to adjust your PATH'; \
+ echo '## environment variable to put /usr/ccs/bin ahead of /usr/ucb.'; \
+ echo '## The environment variable LD_LIBRARY_PATH should not be set'; \
+ echo '## at all. If it is, things are likely to break because of'; \
+ echo '## the libucb dependency that is created.'; \
+ echo; \
+ ;; \
+ esac
+ $(LD) -G -L$(ZLIBLIB) -R$(ZLIBLIB) -h $(LIBSOMAJ) \
+ -o $(LIBSOVER) $(OBJSDLL)
+
+$(OLDSOVER): $(OBJSDLL)
+ $(LD) -G -L$(ZLIBLIB) -R$(ZLIBLIB) -h $(OLDSOMAJ) \
+ -o $(OLDSOVER) $(OBJSDLL)
+
+pngtest: pngtest.o $(LIBSO)
+ $(CC) -o pngtest $(CFLAGS) pngtest.o $(LDFLAGS)
+
+test: pngtest
+ ./pngtest
+
+install-headers: png.h pngconf.h
+ -@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
+ -@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
+ cp png.h pngconf.h $(DI)/$(LIBNAME)
+ chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h
+ -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h
+ -@$(RM_F) $(DI)/libpng
+ (cd $(DI); $(LN_SF) $(LIBNAME) libpng; $(LN_SF) $(LIBNAME)/* .)
+
+install-static: install-headers libpng.a
+ -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
+ cp libpng.a $(DL)/$(LIBNAME).a
+ chmod 644 $(DL)/$(LIBNAME).a
+ -@$(RM_F) $(DL)/libpng.a
+ (cd $(DL); $(LN_SF) $(LIBNAME).a libpng.a)
+
+install-shared: install-headers $(LIBSOVER) libpng.pc \
+ $(OLDSOVER)
+ -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
+ -@$(RM_F) $(DL)/$(LIBSOVER)* $(DL)/$(LIBSO)
+ -@$(RM_F) $(DL)/$(LIBSOMAJ)
+ -@$(RM_F) $(DL)/$(LIBSO)
+ -@$(RM_F) $(DL)/$(OLDSO)
+ -@$(RM_F) $(DL)/$(OLDSOMAJ)
+ -@$(RM_F) $(DL)/$(OLDSOMAJ).$(PNGVER)*
+ cp $(LIBSOVER) $(DL)
+ cp $(OLDSOVER) $(DL)
+ chmod 755 $(DL)/$(LIBSOVER)
+ chmod 755 $(DL)/$(OLDSOVER)
+ (cd $(DL); \
+ $(LN_SF) $(OLDSOVER) $(OLDSOMAJ); \
+ $(LN_SF) $(OLDSOMAJ) $(OLDSO); \
+ $(LN_SF) $(LIBSOVER) $(LIBSOMAJ); \
+ $(LN_SF) $(LIBSOMAJ) $(LIBSO))
+ -@if [ ! -d $(DL)/pkgconfig ]; then $(MKDIR_P) $(DL)/pkgconfig; fi
+ -@$(RM_F) $(DL)/pkgconfig/$(LIBNAME).pc
+ -@$(RM_F) $(DL)/pkgconfig/libpng.pc
+ cp libpng.pc $(DL)/pkgconfig/$(LIBNAME).pc
+ chmod 644 $(DL)/pkgconfig/$(LIBNAME).pc
+ (cd $(DL)/pkgconfig; $(LN_SF) $(LIBNAME).pc libpng.pc)
+
+install-man: libpng.3 libpngpf.3 png.5
+ -@if [ ! -d $(DM) ]; then $(MKDIR_P) $(DM); fi
+ -@if [ ! -d $(DM)/man3 ]; then $(MKDIR_P) $(DM)/man3; fi
+ -@$(RM_F) $(DM)/man3/libpng.3
+ -@$(RM_F) $(DM)/man3/libpngpf.3
+ cp libpng.3 $(DM)/man3
+ cp libpngpf.3 $(DM)/man3
+ -@if [ ! -d $(DM)/man5 ]; then $(MKDIR_P) $(DM)/man5; fi
+ -@$(RM_F) $(DM)/man5/png.5
+ cp png.5 $(DM)/man5
+
+install-config: libpng-config
+ -@if [ ! -d $(DB) ]; then $(MKDIR_P) $(DB); fi
+ -@$(RM_F) $(DB)/libpng-config
+ -@$(RM_F) $(DB)/$(LIBNAME)-config
+ cp libpng-config $(DB)/$(LIBNAME)-config
+ chmod 755 $(DB)/$(LIBNAME)-config
+ (cd $(DB); $(LN_SF) $(LIBNAME)-config libpng-config)
+
+install: install-static install-shared install-man install-config
+
+# If you installed in $(DESTDIR), test-installed won't work until you
+# move the library to its final location. Use test-dd to test it
+# before then.
+
+test-dd:
+ echo
+ echo Testing installed dynamic shared library in $(DL).
+ $(CC) $(SUN_CC_FLAGS) -I$(DI) -I$(ZLIBINC) \
+ `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
+ -o pngtestd -L$(DL) -R$(DL) `$(BINPATH)/$(LIBNAME)-config --ldflags` \
+ $(SUN_LD_FLAGS) -L$(ZLIBLIB) -R$(ZLIBLIB)
+ ./pngtestd pngtest.png
+
+test-installed:
+ echo
+ echo Testing installed dynamic shared library.
+ $(CC) $(SUN_CC_FLAGS) -I$(ZLIBINC) \
+ `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
+ -o pngtesti `$(BINPATH)/$(LIBNAME)-config --ldflags` \
+ $(SUN_LD_FLAGS) -L$(ZLIBLIB) -R$(ZLIBLIB)
+ ./pngtesti pngtest.png
+
+clean:
+ $(RM_F) *.o libpng.a pngtest pngtesti pngout.png \
+ libpng-config $(LIBSO) $(LIBSOMAJ)* \
+ $(OLDSOVER) \
+ libpng.pc
+
+DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
+writelock:
+ chmod a-w *.[ch35] $(DOCS) scripts/*
+
+# DO NOT DELETE THIS LINE -- make depend depends on it.
+
+png.o png.pic.o: png.h pngconf.h pngpriv.h
+pngerror.o pngerror.pic.o: png.h pngconf.h pngpriv.h
+pngrio.o pngrio.pic.o: png.h pngconf.h pngpriv.h
+pngwio.o pngwio.pic.o: png.h pngconf.h pngpriv.h
+pngmem.o pngmem.pic.o: png.h pngconf.h pngpriv.h
+pngset.o pngset.pic.o: png.h pngconf.h pngpriv.h
+pngget.o pngget.pic.o: png.h pngconf.h pngpriv.h
+pngread.o pngread.pic.o: png.h pngconf.h pngpriv.h
+pngrtran.o pngrtran.pic.o: png.h pngconf.h pngpriv.h
+pngrutil.o pngrutil.pic.o: png.h pngconf.h pngpriv.h
+pngtrans.o pngtrans.pic.o: png.h pngconf.h pngpriv.h
+pngwrite.o pngwrite.pic.o: png.h pngconf.h pngpriv.h
+pngwtran.o pngwtran.pic.o: png.h pngconf.h pngpriv.h
+pngwutil.o pngwutil.pic.o: png.h pngconf.h pngpriv.h
+pngpread.o pngpread.pic.o: png.h pngconf.h pngpriv.h
+
+pngtest.o: png.h pngconf.h
diff --git a/src/3rdparty/libpng/scripts/makefile.64sunu b/src/3rdparty/libpng/scripts/makefile.64sunu
new file mode 100644
index 0000000..3a04d97
--- /dev/null
+++ b/src/3rdparty/libpng/scripts/makefile.64sunu
@@ -0,0 +1,257 @@
+# makefile for libpng on Solaris 2.x with cc
+# Contributed by William L. Sebok, based on makefile.linux
+# Copyright (C) 2002, 2006 Glenn Randers-Pehrson
+# Copyright (C) 1998 Greg Roelofs
+# Copyright (C) 1996, 1997 Andreas Dilger
+
+# This code is released under the libpng license.
+# For conditions of distribution and use, see the disclaimer
+# and license in png.h
+
+# Library name:
+LIBNAME=libpng14
+PNGMAJ = 14
+PNGMIN = 1.4.0
+PNGVER = $(PNGMAJ).$(PNGMIN)
+
+# Shared library names:
+LIBSO=$(LIBNAME).so
+LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
+LIBSOVER=$(LIBNAME).so.$(PNGVER)
+OLDSO=libpng.so
+OLDSOMAJ=libpng.so.14
+OLDSOVER=libpng.so.14.$(PNGMIN)
+
+# Utilities:
+CC=cc
+AR_RC=ar rc
+MKDIR_P=mkdir -p
+LN_SF=ln -f -s
+RANLIB=echo
+RM_F=/bin/rm -f
+
+SUN_CC_FLAGS=-fast -xtarget=ultra -xarch=v9
+SUN_LD_FLAGS=-fast -xtarget=ultra -xarch=v9
+
+# where make install puts libpng.a, libpng14.so and libpng14/png.h
+prefix=/a
+exec_prefix=$(prefix)
+
+# Where the zlib library and include files are located
+# Changing these to ../zlib poses a security risk. If you want
+# to have zlib in an adjacent directory, specify the full path instead of "..".
+#ZLIBLIB=../zlib
+#ZLIBINC=../zlib
+
+ZLIBLIB=/usr/lib
+ZLIBINC=/usr/include
+
+WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
+ -Wmissing-declarations -Wtraditional -Wcast-align \
+ -Wstrict-prototypes -Wmissing-prototypes #-Wconversion
+CFLAGS=-I$(ZLIBINC) $(SUN_CC_FLAGS) \
+ # $(WARNMORE) -g -DPNG_DEBUG=5
+LDFLAGS=-L. -R. $(SUN_LD_FLAGS) -L$(ZLIBLIB) -R$(ZLIBLIB) -lpng14 -lz -lm
+
+INCPATH=$(prefix)/include
+LIBPATH=$(exec_prefix)/lib
+MANPATH=$(prefix)/man
+BINPATH=$(exec_prefix)/bin
+
+# override DESTDIR= on the make install command line to easily support
+# installing into a temporary location. Example:
+#
+# make install DESTDIR=/tmp/build/libpng
+#
+# If you're going to install into a temporary location
+# via DESTDIR, $(DESTDIR)$(prefix) must already exist before
+# you execute make install.
+DESTDIR=
+
+DB=$(DESTDIR)$(BINPATH)
+DI=$(DESTDIR)$(INCPATH)
+DL=$(DESTDIR)$(LIBPATH)
+DM=$(DESTDIR)$(MANPATH)
+
+OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
+ pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
+ pngwtran.o pngmem.o pngerror.o pngpread.o
+
+OBJSDLL = $(OBJS:.o=.pic.o)
+
+.SUFFIXES: .c .o .pic.o
+
+.c.pic.o:
+ $(CC) -c $(CFLAGS) -KPIC -o $@ $*.c
+
+all: libpng.a $(LIBSO) pngtest libpng.pc libpng-config
+
+libpng.a: $(OBJS)
+ $(AR_RC) $@ $(OBJS)
+ $(RANLIB) $@
+
+libpng.pc:
+ cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
+ -e s!@exec_prefix@!$(exec_prefix)! \
+ -e s!@libdir@!$(LIBPATH)! \
+ -e s!@includedir@!$(INCPATH)! \
+ -e s!-lpng14!-lpng14\ -lz\ -lm! > libpng.pc
+
+libpng-config:
+ ( cat scripts/libpng-config-head.in; \
+ echo prefix=\"$(prefix)\"; \
+ echo libdir=\"$(LIBPATH)\"; \
+ echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
+ echo L_opts=\"-L$(LIBPATH)\"; \
+ echo R_opts=\"-R$(LIBPATH)\"; \
+ echo ccopts=\"-xtarget=ultra -xarch=v9\"; \
+ echo ldopts=\"-xtarget=ultra -xarch=v9\"; \
+ echo libs=\"-lpng14 -lz -lm\"; \
+ cat scripts/libpng-config-body.in ) > libpng-config
+ chmod +x libpng-config
+
+$(LIBSO): $(LIBSOMAJ)
+ $(LN_SF) $(LIBSOMAJ) $(LIBSO)
+
+$(LIBSOMAJ): $(LIBSOVER)
+ $(LN_SF) $(LIBSOVER) $(LIBSOMAJ)
+
+$(LIBSOVER): $(OBJSDLL)
+ @case "`type ld`" in *ucb*) \
+ echo; \
+ echo '## WARNING:'; \
+ echo '## The commands "CC" and "LD" must NOT refer to /usr/ucb/cc'; \
+ echo '## and /usr/ucb/ld. If they do, you need to adjust your PATH'; \
+ echo '## environment variable to put /usr/ccs/bin ahead of /usr/ucb.'; \
+ echo '## The environment variable LD_LIBRARY_PATH should not be set'; \
+ echo '## at all. If it is, things are likely to break because of'; \
+ echo '## the libucb dependency that is created.'; \
+ echo; \
+ ;; \
+ esac
+ $(LD) -G -L$(ZLIBLIB) -R$(ZLIBLIB) -h $(LIBSOMAJ) \
+ -o $(LIBSOVER) $(OBJSDLL)
+
+$(OLDSOVER): $(OBJSDLL)
+ $(LD) -G -L$(ZLIBLIB) -R$(ZLIBLIB) -h $(OLDSOMAJ) \
+ -o $(OLDSOVER) $(OBJSDLL)
+
+pngtest: pngtest.o $(LIBSO)
+ $(CC) -o pngtest $(CFLAGS) pngtest.o $(LDFLAGS)
+
+test: pngtest
+ ./pngtest
+
+install-headers: png.h pngconf.h
+ -@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
+ -@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
+ cp png.h pngconf.h $(DI)/$(LIBNAME)
+ chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h
+ -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h
+ -@$(RM_F) $(DI)/libpng
+ (cd $(DI); $(LN_SF) $(LIBNAME) libpng; $(LN_SF) $(LIBNAME)/* .)
+
+install-static: install-headers libpng.a
+ -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
+ cp libpng.a $(DL)/$(LIBNAME).a
+ chmod 644 $(DL)/$(LIBNAME).a
+ -@$(RM_F) $(DL)/libpng.a
+ (cd $(DL); $(LN_SF) $(LIBNAME).a libpng.a)
+
+install-shared: install-headers $(LIBSOVER) libpng.pc \
+ $(OLDSOVER)
+ -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
+ -@$(RM_F) $(DL)/$(LIBSOVER)* $(DL)/$(LIBSO)
+ -@$(RM_F) $(DL)/$(LIBSOMAJ)
+ -@$(RM_F) $(DL)/$(LIBSO)
+ -@$(RM_F) $(DL)/$(OLDSO)
+ -@$(RM_F) $(DL)/$(OLDSOMAJ)
+ -@$(RM_F) $(DL)/$(OLDSOMAJ).$(PNGVER)*
+ cp $(LIBSOVER) $(DL)
+ cp $(OLDSOVER) $(DL)
+ chmod 755 $(DL)/$(LIBSOVER)
+ chmod 755 $(DL)/$(OLDSOVER)
+ (cd $(DL); \
+ $(LN_SF) $(OLDSOVER) $(OLDSOMAJ); \
+ $(LN_SF) $(OLDSOMAJ) $(OLDSO); \
+ $(LN_SF) $(LIBSOVER) $(LIBSOMAJ); \
+ $(LN_SF) $(LIBSOMAJ) $(LIBSO))
+ -@if [ ! -d $(DL)/pkgconfig ]; then $(MKDIR_P) $(DL)/pkgconfig; fi
+ -@$(RM_F) $(DL)/pkgconfig/$(LIBNAME).pc
+ -@$(RM_F) $(DL)/pkgconfig/libpng.pc
+ cp libpng.pc $(DL)/pkgconfig/$(LIBNAME).pc
+ chmod 644 $(DL)/pkgconfig/$(LIBNAME).pc
+ (cd $(DL)/pkgconfig; $(LN_SF) $(LIBNAME).pc libpng.pc)
+
+install-man: libpng.3 libpngpf.3 png.5
+ -@if [ ! -d $(DM) ]; then $(MKDIR_P) $(DM); fi
+ -@if [ ! -d $(DM)/man3 ]; then $(MKDIR_P) $(DM)/man3; fi
+ -@$(RM_F) $(DM)/man3/libpng.3
+ -@$(RM_F) $(DM)/man3/libpngpf.3
+ cp libpng.3 $(DM)/man3
+ cp libpngpf.3 $(DM)/man3
+ -@if [ ! -d $(DM)/man5 ]; then $(MKDIR_P) $(DM)/man5; fi
+ -@$(RM_F) $(DM)/man5/png.5
+ cp png.5 $(DM)/man5
+
+install-config: libpng-config
+ -@if [ ! -d $(DB) ]; then $(MKDIR_P) $(DB); fi
+ -@$(RM_F) $(DB)/libpng-config
+ -@$(RM_F) $(DB)/$(LIBNAME)-config
+ cp libpng-config $(DB)/$(LIBNAME)-config
+ chmod 755 $(DB)/$(LIBNAME)-config
+ (cd $(DB); $(LN_SF) $(LIBNAME)-config libpng-config)
+
+install: install-static install-shared install-man install-config
+
+# If you installed in $(DESTDIR), test-installed won't work until you
+# move the library to its final location. Use test-dd to test it
+# before then.
+
+test-dd:
+ echo
+ echo Testing installed dynamic shared library in $(DL).
+ $(CC) $(SUN_CC_FLAGS) -I$(DI) -I$(ZLIBINC) \
+ `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
+ -o pngtestd -L$(DL) -R$(DL) `$(BINPATH)/$(LIBNAME)-config --ldflags` \
+ $(SUN_LD_FLAGS) -L$(ZLIBLIB) -R$(ZLIBLIB)
+ ./pngtestd pngtest.png
+
+test-installed:
+ echo
+ echo Testing installed dynamic shared library.
+ $(CC) $(SUN_CC_FLAGS) -I$(ZLIBINC) \
+ `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
+ -o pngtesti `$(BINPATH)/$(LIBNAME)-config --ldflags` \
+ $(SUN_LD_FLAGS) -L$(ZLIBLIB) -R$(ZLIBLIB)
+ ./pngtesti pngtest.png
+
+clean:
+ $(RM_F) *.o libpng.a pngtest pngtesti pngout.png \
+ libpng-config $(LIBSO) $(LIBSOMAJ)* \
+ $(OLDSOVER) \
+ libpng.pc
+
+DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
+writelock:
+ chmod a-w *.[ch35] $(DOCS) scripts/*
+
+# DO NOT DELETE THIS LINE -- make depend depends on it.
+
+png.o png.pic.o: png.h pngconf.h pngpriv.h
+pngerror.o pngerror.pic.o: png.h pngconf.h pngpriv.h
+pngrio.o pngrio.pic.o: png.h pngconf.h pngpriv.h
+pngwio.o pngwio.pic.o: png.h pngconf.h pngpriv.h
+pngmem.o pngmem.pic.o: png.h pngconf.h pngpriv.h
+pngset.o pngset.pic.o: png.h pngconf.h pngpriv.h
+pngget.o pngget.pic.o: png.h pngconf.h pngpriv.h
+pngread.o pngread.pic.o: png.h pngconf.h pngpriv.h
+pngrtran.o pngrtran.pic.o: png.h pngconf.h pngpriv.h
+pngrutil.o pngrutil.pic.o: png.h pngconf.h pngpriv.h
+pngtrans.o pngtrans.pic.o: png.h pngconf.h pngpriv.h
+pngwrite.o pngwrite.pic.o: png.h pngconf.h pngpriv.h
+pngwtran.o pngwtran.pic.o: png.h pngconf.h pngpriv.h
+pngwutil.o pngwutil.pic.o: png.h pngconf.h pngpriv.h
+pngpread.o pngpread.pic.o: png.h pngconf.h pngpriv.h
+
+pngtest.o: png.h pngconf.h
diff --git a/src/3rdparty/libpng/scripts/makefile.acorn b/src/3rdparty/libpng/scripts/makefile.acorn
new file mode 100644
index 0000000..a0e577b
--- /dev/null
+++ b/src/3rdparty/libpng/scripts/makefile.acorn
@@ -0,0 +1,50 @@
+# Project: libpng
+
+
+# Toolflags:
+CCflags = -c -depend !Depend -IC:,Zlib: -g -throwback -DRISCOS -fnah
+C++flags = -c -depend !Depend -IC: -throwback
+Linkflags = -aif -c++ -o $@
+ObjAsmflags = -throwback -NoCache -depend !Depend
+CMHGflags =
+LibFileflags = -c -l -o $@
+Squeezeflags = -o $@
+
+# Final targets:
+@.libpng-lib: @.o.png @.o.pngerror @.o.pngrio @.o.pngwio @.o.pngmem \
+ @.o.pngpread @.o.pngset @.o.pngget @.o.pngread @.o.pngrtran \
+ @.o.pngrutil @.o.pngtrans @.o.pngwrite @.o.pngwtran @.o.pngwutil
+ LibFile $(LibFileflags) @.o.png @.o.pngerror @.o.pngrio @.o.pngrtran \
+ @.o.pngmem @.o.pngpread @.o.pngset @.o.pngget @.o.pngread @.o.pngwio \
+ @.o.pngrutil @.o.pngtrans @.o.pngwrite @.o.pngwtran @.o.pngwutil
+@.mm-libpng-lib: @.mm.png @.mm.pngerror @.mm.pngrio @.mm.pngwio @.mm.pngmem \
+ @.mm.pngpread @.mm.pngset @.mm.pngget @.mm.pngread @.mm.pngrtran \
+ @.mm.pngrutil @.mm.pngtrans @.mm.pngwrite @.mm.pngwtran @.mm.pngwutil
+ LibFile $(LibFileflags) @.mm.png @.mm.pngerror @.mm.pngrio \
+ @.mm.pngwio @.mm.pngmem @.mm.pngpread @.mm.pngset @.mm.pngget \
+ @.mm.pngread @.mm.pngrtran @.mm.pngrutil @.mm.pngtrans @.mm.pngwrite \
+ @.mm.pngwtran @.mm.pngwutil
+
+
+# User-editable dependencies:
+# (C) Copyright 1997 Tom Tanner
+Test: @.pngtest
+ <Prefix$Dir>.pngtest
+ @remove <Prefix$Dir>.pngtest
+
+#It would be nice if you could stop "make" listing from here on!
+@.pngtest: @.o.pngtest @.libpng-lib C:o.Stubs Zlib:zlib_lib
+ Link $(Linkflags) @.o.pngtest @.libpng-lib C:o.Stubs Zlib:zlib_lib
+
+.SUFFIXES: .o .mm .c
+
+.c.mm:
+ MemCheck.CC cc $(ccflags) -o $@ LibPng:$<
+.c.o:
+ cc $(ccflags) -o $@ $<
+
+
+# Static dependencies:
+
+
+# Dynamic dependencies:
diff --git a/src/3rdparty/libpng/scripts/makefile.aix b/src/3rdparty/libpng/scripts/makefile.aix
new file mode 100644
index 0000000..e6e1a89
--- /dev/null
+++ b/src/3rdparty/libpng/scripts/makefile.aix
@@ -0,0 +1,116 @@
+# makefile for libpng using gcc (generic, static library)
+# Copyright (C) 2002, 2006-2009 Glenn Randers-Pehrson
+# Copyright (C) 2000 Cosmin Truta
+# Copyright (C) 2000 Marc O. Gloor (AIX support added, from makefile.gcc)
+# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
+#
+# This code is released under the libpng license.
+# For conditions of distribution and use, see the disclaimer
+# and license in png.h
+
+# Location of the zlib library and include files
+ZLIBINC = ../zlib
+ZLIBLIB = ../zlib
+
+# Compiler, linker, lib and other tools
+CC = gcc
+LD = $(CC)
+AR_RC = ar rcs
+MKDIR_P = mkdir -p
+RANLIB = ranlib
+RM_F = rm -f
+LN_SF = ln -f -s
+
+LIBNAME=libpng14
+PNGMAJ = 14
+PNGMIN = 1.4.0
+PNGVER = $(PNGMAJ).$(PNGMIN)
+
+prefix=/usr/local
+INCPATH=$(prefix)/include
+LIBPATH=$(prefix)/lib
+
+# override DESTDIR= on the make install command line to easily support
+# installing into a temporary location. Example:
+#
+# make install DESTDIR=/tmp/build/libpng
+#
+# If you're going to install into a temporary location
+# via DESTDIR, $(DESTDIR)$(prefix) must already exist before
+# you execute make install.
+DESTDIR=
+
+DI=$(DESTDIR)$(INCPATH)
+DL=$(DESTDIR)$(LIBPATH)
+
+CDEBUG = -g -DPNG_DEBUG=5
+LDDEBUG =
+CRELEASE = -O2
+LDRELEASE = -s
+WARNMORE=-W -Wall
+CFLAGS = -I$(ZLIBINC) $(WARNMORE) $(CRELEASE)
+LDFLAGS = -L. -L$(ZLIBLIB) -lpng14 -lz -lm $(LDRELEASE)
+
+# File extensions
+O=.o
+A=.a
+E=
+
+# Variables
+OBJS = png$(O) pngerror$(O) pngget$(O) pngmem$(O) pngpread$(O) \
+ pngread$(O) pngrio$(O) pngrtran$(O) pngrutil$(O) pngset$(O) \
+ pngtrans$(O) pngwio$(O) pngwrite$(O) pngwtran$(O) pngwutil$(O)
+
+# Targets
+all: $(LIBNAME)$(A) pngtest$(E)
+
+$(LIBNAME)$(A): $(OBJS)
+ $(AR_RC) $@ $(OBJS)
+ $(RANLIB) $@
+
+test: pngtest$(E)
+ ./pngtest$(E)
+
+pngtest$(E): pngtest$(O) $(LIBNAME)$(A)
+ $(LD) -o $@ pngtest$(O) $(LDFLAGS)
+
+install: $(LIBNAME)$(A)
+ -@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
+ -@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
+ -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
+ -@$(RM_F) $(DI)/$(LIBNAME)/png.h
+ -@$(RM_F) $(DI)/$(LIBNAME)/pngconf.h
+ -@$(RM_F) $(DI)/png.h
+ -@$(RM_F) $(DI)/pngconf.h
+ cp png.h pngconf.h $(DI)/$(LIBNAME)
+ chmod 644 $(DI)/$(LIBNAME)/png.h \
+ $(DI)/$(LIBNAME)/pngconf.h
+ -@$(RM_F) -r $(DI)/libpng
+ (cd $(DI); $(LN_SF) $(LIBNAME) libpng; $(LN_SF) $(LIBNAME)/* .)
+ -@$(RM_F) $(DL)/$(LIBNAME)$(A)
+ -@$(RM_F) $(DL)/libpng$(A)
+ cp $(LIBNAME)$(A) $(DL)/$(LIBNAME)$(A)
+ chmod 644 $(DL)/$(LIBNAME)$(A)
+ (cd $(DL); $(LN_SF) $(LIBNAME)$(A) libpng$(A))
+ (cd $(DI); $(LN_SF) libpng/* .;)
+
+clean:
+ $(RM_F) *.o $(LIBNAME)$(A) pngtest pngout.png
+
+png$(O): png.h pngconf.h pngpriv.h
+pngerror$(O): png.h pngconf.h pngpriv.h
+pngget$(O): png.h pngconf.h pngpriv.h
+pngmem$(O): png.h pngconf.h pngpriv.h
+pngpread$(O): png.h pngconf.h pngpriv.h
+pngread$(O): png.h pngconf.h pngpriv.h
+pngrio$(O): png.h pngconf.h pngpriv.h
+pngrtran$(O): png.h pngconf.h pngpriv.h
+pngrutil$(O): png.h pngconf.h pngpriv.h
+pngset$(O): png.h pngconf.h pngpriv.h
+pngtrans$(O): png.h pngconf.h pngpriv.h
+pngwio$(O): png.h pngconf.h pngpriv.h
+pngwrite$(O): png.h pngconf.h pngpriv.h
+pngwtran$(O): png.h pngconf.h pngpriv.h
+pngwutil$(O): png.h pngconf.h pngpriv.h
+
+pngtest$(O): png.h pngconf.h
diff --git a/src/3rdparty/libpng/scripts/makefile.amiga b/src/3rdparty/libpng/scripts/makefile.amiga
new file mode 100644
index 0000000..8bf0f45
--- /dev/null
+++ b/src/3rdparty/libpng/scripts/makefile.amiga
@@ -0,0 +1,51 @@
+# Commodore Amiga Makefile
+# makefile for libpng and SAS C V6.5x compiler
+# Copyright (C) 1995-2000 Wolf Faust
+#
+# This code is released under the libpng license.
+# For conditions of distribution and use, see the disclaimer
+# and license in png.h
+#
+# Note: Use #define PNG_READ_BIG_ENDIAN_SUPPORTED in pngconf.h
+#
+# Location/path of zlib include files
+ZLIB=/zlib
+#compiler
+CC=sc
+#compiler flags
+# WARNING: a bug in V6.51 causes bad code with OPTGO
+# So use V6.55 or set NOOPTGO!!!!!!!!!
+CFLAGS= NOSTKCHK PARMS=REG OPTIMIZE OPTGO OPTPEEP OPTINLOCAL OPTINL\
+ OPTLOOP OPTRDEP=4 OPTDEP=4 OPTCOMP=4 INCLUDEDIR=$(ZLIB) \
+ DEFINE=PNG_INTERNAL
+#linker flags
+LDFLAGS= SD ND BATCH
+#link libs
+LDLIBS= libpng.lib libgz.lib LIB:scm.lib LIB:sc.lib Lib:amiga.lib
+# linker
+LN= slink
+# file deletion command
+RM= delete quiet
+# library (.lib) file creation command
+AR= oml
+# make directory command
+MKDIR= makedir
+
+OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
+ pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
+ pngwtran.o pngmem.o pngerror.o pngpread.o
+
+all: libpng.lib pngtest
+
+libpng.lib: $(OBJS)
+-$(RM) libpng.lib
+$(AR) libpng.lib r $(OBJS)
+
+pngtest: pngtest.o libpng.lib
+$(LN) <WITH <
+$(LDFLAGS)
+TO pngtest
+FROM LIB:c.o pngtest.o
+LIB $(LDLIBS)
+<
+
diff --git a/src/3rdparty/libpng/scripts/makefile.atari b/src/3rdparty/libpng/scripts/makefile.atari
new file mode 100644
index 0000000..0e1ca72
--- /dev/null
+++ b/src/3rdparty/libpng/scripts/makefile.atari
@@ -0,0 +1,55 @@
+# makefile for libpng
+# Copyright (C) 2002 Glenn Randers-Pehrson
+# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
+#
+# This code is released under the libpng license.
+# For conditions of distribution and use, see the disclaimer
+# and license in png.h
+#
+# Modified for LC56/ATARI assumes libz.lib is in same dir and uses default
+# rules for library management
+#
+CFLAGS=-I..\zlib -O
+LBR = png.lib
+LDFLAGS=-lpng -lz -lm
+
+# where make install puts libpng.a and png.h
+prefix=/usr/local
+INCPATH=$(prefix)/include
+LIBPATH=$(prefix)/lib
+
+# override DESTDIR= on the make install command line to easily support
+# installing into a temporary location. Example:
+#
+# make install DESTDIR=/tmp/build/libpng
+#
+# If you're going to install into a temporary location
+# via DESTDIR, $(DESTDIR)$(prefix) must already exist before
+# you execute make install.
+DESTDIR=
+
+OBJS = $(LBR)(png.o) $(LBR)(pngset.o) $(LBR)(pngget.o) $(LBR)(pngrutil.o)\
+ $(LBR)(pngtrans.o) $(LBR)(pngwutil.o)\
+ $(LBR)(pngread.o) $(LBR)(pngerror.o) $(LBR)(pngwrite.o)\
+ $(LBR)(pngrtran.o) $(LBR)(pngwtran.o)\
+ $(LBR)(pngmem.o) $(LBR)(pngrio.o) $(LBR)(pngwio.o) $(LBR)(pngpread.o)
+
+all: $(LBR) pngtest.ttp
+
+$(LBR): $(OBJS)
+
+pngtest.ttp: pngtest.o $(LBR)
+ $(CC) $(CFLAGS) $(LDFLAGS) -o$@ pngtest.o
+
+install: libpng.a
+ -@mkdir $(DESTDIR)$(INCPATH)
+ -@mkdir $(DESTDIR)$(INCPATH)/libpng
+ -@mkdir $(DESTDIR)$(LIBPATH)
+ -@rm -f $(DESTDIR)$(INCPATH)/png.h
+ -@rm -f $(DESTDIR)$(INCPATH)/pngconf.h
+ cp png.h $(DESTDIR)$(INCPATH)/libpng
+ cp pngconf.h $(DESTDIR)$(INCPATH)/libpng
+ chmod 644 $(DESTDIR)$(INCPATH)/libpng/png.h
+ chmod 644 $(DESTDIR)$(INCPATH)/libpng/pngconf.h
+ (cd $(DESTDIR)$(INCPATH); ln -f -s $(LIBNAME) libpng; \
+ ln -f -s $(LIBNAME)/* .)
diff --git a/src/3rdparty/libpng/scripts/makefile.bc32 b/src/3rdparty/libpng/scripts/makefile.bc32
new file mode 100644
index 0000000..2020e6e
--- /dev/null
+++ b/src/3rdparty/libpng/scripts/makefile.bc32
@@ -0,0 +1,145 @@
+# Makefile for libpng
+# 32-bit Borland C++ (Note: All modules are compiled in C mode)
+# To build the library, do:
+# "make -fmakefile.bc32"
+#
+# -------------------- 32-bit Borland C++ --------------------
+
+### Absolutely necessary for this makefile to work
+.AUTODEPEND
+
+## Where zlib.h, zconf.h and zlib.lib are
+ZLIB_DIR=..\zlib
+
+## Compiler, linker and lib stuff
+CC=bcc32
+LD=bcc32
+LIB=tlib
+
+# -3 = 386, -4 = 486, -5 = Pentium etc.
+!ifndef TARGET_CPU
+#TARGET_CPU=-6
+!endif
+
+# Use this if you don't want Borland's fancy exception handling
+# (Caution: doesn't work with CBuilderX)
+#NOEHLIB=noeh32.lib
+
+!ifdef DEBUG
+CDEBUG=-v
+LDEBUG=-v
+!else
+CDEBUG=
+LDEBUG=
+!endif
+
+# STACKOFLOW=1
+!ifdef STACKOFLOW
+CDEBUG=$(CDEBUG) -N
+LDEBUG=$(LDEBUG) -N
+!endif
+
+# -O2 optimize for speed
+# -d merge duplicate strings
+# -k- turn off standard stack frame
+# -w display all warnings
+CFLAGS=-I$(ZLIB_DIR) -O2 -d -k- -w $(TARGET_CPU) $(CDEBUG)
+
+# -M generate map file
+LDFLAGS=-L$(ZLIB_DIR) -M $(LDEBUG)
+
+## Variables
+OBJS = \
+ png.obj \
+ pngerror.obj \
+ pngget.obj \
+ pngmem.obj \
+ pngpread.obj \
+ pngread.obj \
+ pngrio.obj \
+ pngrtran.obj \
+ pngrutil.obj \
+ pngset.obj \
+ pngtrans.obj \
+ pngwio.obj \
+ pngwrite.obj \
+ pngwtran.obj \
+ pngwutil.obj
+
+LIBOBJS = \
+ +png.obj \
+ +pngerror.obj \
+ +pngget.obj \
+ +pngmem.obj \
+ +pngpread.obj \
+ +pngread.obj \
+ +pngrio.obj \
+ +pngrtran.obj \
+ +pngrutil.obj \
+ +pngset.obj \
+ +pngtrans.obj \
+ +pngwio.obj \
+ +pngwrite.obj \
+ +pngwtran.obj \
+ +pngwutil.obj
+
+LIBNAME=libpng.lib
+
+## Implicit rules
+# Braces let make "batch" calls to the compiler,
+# 2 calls instead of 12; space is important.
+.c.obj:
+ $(CC) $(CFLAGS) -c {$*.c }
+
+.c.exe:
+ $(CC) $(CFLAGS) $(LDFLAGS) $*.c $(LIBNAME) zlib.lib $(NOEHLIB)
+
+.obj.exe:
+ $(LD) $(LDFLAGS) $*.obj $(LIBNAME) zlib.lib $(NOEHLIB)
+
+## Major targets
+all: libpng pngtest
+
+libpng: $(LIBNAME)
+
+pngtest: pngtest.exe
+
+test: pngtest.exe
+ pngtest
+
+## Minor Targets
+
+png.obj: png.c png.h pngconf.h pngpriv.h
+pngerror.obj: pngerror.c png.h pngconf.h pngpriv.h
+pngget.obj: pngget.c png.h pngconf.h pngpriv.h
+pngmem.obj: pngmem.c png.h pngconf.h pngpriv.h
+pngpread.obj: pngpread.c png.h pngconf.h pngpriv.h
+pngread.obj: pngread.c png.h pngconf.h pngpriv.h
+pngrio.obj: pngrio.c png.h pngconf.h pngpriv.h
+pngrtran.obj: pngrtran.c png.h pngconf.h pngpriv.h
+pngrutil.obj: pngrutil.c png.h pngconf.h pngpriv.h
+pngset.obj: pngset.c png.h pngconf.h pngpriv.h
+pngtrans.obj: pngtrans.c png.h pngconf.h pngpriv.h
+pngwio.obj: pngwio.c png.h pngconf.h pngpriv.h
+pngwrite.obj: pngwrite.c png.h pngconf.h pngpriv.h
+pngwtran.obj: pngwtran.c png.h pngconf.h pngpriv.h
+pngwutil.obj: pngwutil.c png.h pngconf.h pngpriv.h
+pngtest.obj: pngtest.c png.h pngconf.h
+
+$(LIBNAME): $(OBJS)
+ -del $(LIBNAME)
+ $(LIB) $(LIBNAME) @&&|
+$(LIBOBJS), libpng
+|
+
+# Cleanup
+clean:
+ -del *.obj
+ -del $(LIBNAME)
+ -del pngtest.exe
+ -del *.lst
+ -del *.map
+ -del *.tds
+ -del pngout.png
+
+# End of makefile for libpng
diff --git a/src/3rdparty/libpng/scripts/makefile.beos b/src/3rdparty/libpng/scripts/makefile.beos
new file mode 100644
index 0000000..0b184d6
--- /dev/null
+++ b/src/3rdparty/libpng/scripts/makefile.beos
@@ -0,0 +1,230 @@
+# makefile for libpng on BeOS x86 ELF with gcc
+# modified from makefile.linux by Sander Stoks
+# Copyright (C) 2002, 2006, 2008 Glenn Randers-Pehrson
+# Copyright (C) 1999 Greg Roelofs
+# Copyright (C) 1996, 1997 Andreas Dilger
+#
+# This code is released under the libpng license.
+# For conditions of distribution and use, see the disclaimer
+# and license in png.h
+
+# Library name:
+LIBNAME=libpng14
+PNGMAJ = 14
+PNGMIN = 1.4.0
+PNGVER = $(PNGMAJ).$(PNGMIN)
+
+# Shared library names:
+LIBSO=$(LIBNAME).so
+LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
+LIBSOVER=$(LIBNAME).so.$(PNGVER)
+OLDSO=libpng.so
+OLDSOMAJ=libpng.so.14
+OLDSOVER=libpng.so.14.$(PNGMIN)
+
+# Utilities:
+CC=gcc
+AR_RC=ar rc
+MKDIR_P=mkdir -p
+LN_SF=ln -sf
+RANLIB=ranlib
+RM_F=/bin/rm -f
+
+# Where the zlib library and include files are located
+ZLIBLIB=/usr/local/lib
+ZLIBINC=/usr/local/include
+
+ALIGN=
+# For i386:
+# ALIGN=-malign-loops=2 -malign-functions=2
+
+WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
+ -Wmissing-declarations -Wtraditional -Wcast-align \
+ -Wstrict-prototypes -Wmissing-prototypes #-Wconversion
+
+# On BeOS, -O1 is actually better than -O3. This is a known bug but it's
+# still here in R4.5
+CFLAGS=-I$(ZLIBINC) -W -Wall -O1 -funroll-loops \
+ $(ALIGN) # $(WARNMORE) -g -DPNG_DEBUG=5
+# LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng -lz
+LDFLAGS=-L. -Wl,-soname=$(LIBSOMAJ) -L$(ZLIBLIB) -lz
+
+# where make install puts libpng.a, libpng14.so*, and png.h
+prefix=/usr/local
+exec_prefix=$(prefix)
+INCPATH=$(prefix)/include
+LIBPATH=$(exec_prefix)/lib
+MANPATH=$(prefix)/man
+BINPATH=$(exec_prefix)/bin
+
+# override DESTDIR= on the make install command line to easily support
+# installing into a temporary location. Example:
+#
+# make install DESTDIR=/tmp/build/libpng
+#
+# If you're going to install into a temporary location
+# via DESTDIR, $(DESTDIR)$(prefix) must already exist before
+# you execute make install.
+DESTDIR=
+
+DB=$(DESTDIR)$(BINPATH)
+DI=$(DESTDIR)$(INCPATH)
+DL=$(DESTDIR)$(LIBPATH)
+DM=$(DESTDIR)$(MANPATH)
+
+OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
+ pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
+ pngwtran.o pngmem.o pngerror.o pngpread.o
+
+OBJSDLL = $(OBJS)
+
+.SUFFIXES: .c .o
+
+all: libpng.a $(LIBSO) pngtest libpng.pc libpng-config
+
+libpng.a: $(OBJS)
+ $(AR_RC) $@ $(OBJS)
+ $(RANLIB) $@
+
+libpng.pc:
+ cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
+ -e s!@exec_prefix@!$(exec_prefix)! \
+ -e s!@libdir@!$(LIBPATH)! \
+ -e s!@includedir@!$(INCPATH)! \
+ -e s!-lpng14!-lpng14\ -lz\ -lm! > libpng.pc
+
+libpng-config:
+ ( cat scripts/libpng-config-head.in; \
+ echo prefix=\"$(prefix)\"; \
+ echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
+ echo libs=\"-lpng14 -lz \"; \
+ cat scripts/libpng-config-body.in ) > libpng-config
+ chmod +x libpng-config
+
+$(LIBSO): $(LIBSOMAJ)
+ $(LN_SF) $(LIBSOMAJ) $(LIBSO)
+ cp $(LIBSO)* /boot/home/config/lib
+
+$(LIBSOMAJ): $(LIBSOVER)
+ $(LN_SF) $(LIBSOVER) $(LIBSOMAJ)
+
+$(LIBSOVER): $(OBJSDLL)
+ $(CC) -nostart -Wl,-soname,$(LIBSOMAJ) -o \
+ $(LIBSOVER) $(OBJSDLL) $(LDFLAGS)
+
+$(OLDSOVER): $(OBJSDLL)
+ $(CC) -nostart -Wl,-soname,$(OLDSOMAJ) -o \
+ $(OLDSOVER) $(OBJSDLL) $(LDFLAGS)
+
+pngtest: pngtest.o $(LIBSO)
+ $(CC) -L$(ZLIBLIB) -L. -lz -lpng14 -o pngtest pngtest.o
+
+test: pngtest
+ ./pngtest
+
+install-headers: png.h pngconf.h
+ -@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
+ -@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
+ cp png.h pngconf.h $(DI)/$(LIBNAME)
+ chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h
+ -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h
+ -@$(RM_F) $(DI)/libpng
+ (cd $(DI); $(LN_SF) $(LIBNAME) libpng; $(LN_SF) $(LIBNAME)/* .)
+
+install-static: install-headers libpng.a
+ -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
+ cp libpng.a $(DL)/$(LIBNAME).a
+ chmod 644 $(DL)/$(LIBNAME).a
+ -@$(RM_F) $(DL)/libpng.a
+ (cd $(DL); $(LN_SF) $(LIBNAME).a libpng.a)
+
+install-shared: install-headers $(LIBSOVER) libpng.pc \
+ $(OLDSOVER)
+ -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
+ -@$(RM_F) $(DL)/$(LIBSOVER)* $(DL)/$(LIBSO)
+ -@$(RM_F) $(DL)/$(LIBSOMAJ)
+ -@$(RM_F) $(DL)/$(OLDSO)
+ -@$(RM_F) $(DL)/$(OLDSOMAJ)
+ -@$(RM_F) $(DL)/$(OLDSOVER)*
+ cp $(LIBSOVER) $(DL)
+ cp $(OLDSOVER) $(DL)
+ chmod 755 $(DL)/$(LIBSOVER)
+ chmod 755 $(DL)/$(OLDSOVER)
+ (cd $(DL); \
+ $(LN_SF) $(OLDSOVER) $(OLDSOMAJ); \
+ $(LN_SF) $(OLDSOMAJ) $(OLDSO); \
+ $(LN_SF) $(LIBSOVER) $(LIBSOMAJ); \
+ $(LN_SF) $(LIBSOMAJ) $(LIBSO))
+ -@if [ ! -d $(DL)/pkgconfig ]; then $(MKDIR_P) $(DL)/pkgconfig; fi
+ -@$(RM_F) $(DL)/pkgconfig/$(LIBNAME).pc
+ -@$(RM_F) $(DL)/pkgconfig/libpng.pc
+ cp libpng.pc $(DL)/pkgconfig/$(LIBNAME).pc
+ chmod 644 $(DL)/pkgconfig/$(LIBNAME).pc
+ (cd $(DL)/pkgconfig; $(LN_SF) $(LIBNAME).pc libpng.pc)
+
+install-man: libpng.3 libpngpf.3 png.5
+ -@if [ ! -d $(DM) ]; then $(MKDIR_P) $(DM); fi
+ -@if [ ! -d $(DM)/man3 ]; then $(MKDIR_P) $(DM)/man3; fi
+ -@$(RM_F) $(DM)/man3/libpng.3
+ -@$(RM_F) $(DM)/man3/libpngpf.3
+ cp libpng.3 $(DM)/man3
+ cp libpngpf.3 $(DM)/man3
+ -@if [ ! -d $(DM)/man5 ]; then $(MKDIR_P) $(DM)/man5; fi
+ -@$(RM_F) $(DM)/man5/png.5
+ cp png.5 $(DM)/man5
+
+install-config: libpng-config
+ -@if [ ! -d $(DB) ]; then $(MKDIR_P) $(DB); fi
+ -@$(RM_F) $(DB)/libpng-config
+ -@$(RM_F) $(DB)/$(LIBNAME)-config
+ cp libpng-config $(DB)/$(LIBNAME)-config
+ chmod 755 $(DB)/$(LIBNAME)-config
+ (cd $(DB); $(LN_SF) $(LIBNAME)-config libpng-config)
+
+install: install-static install-shared install-man install-config
+
+# If you installed in $(DESTDIR), test-installed won't work until you
+# move the library to its final location. Use test-dd to test it
+# before then.
+
+test-dd:
+ echo
+ echo Testing installed dynamic shared library in $(DL).
+ $(CC) -I$(DI) $(CFLAGS) \
+ `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
+ -L$(DL) -L$(ZLIBLIB) -Wl,-rpath $(ZLIBLIB):$(DL) \
+ -o pngtestd `$(BINPATH)/$(LIBNAME)-config --ldflags`
+ ./pngtestd pngtest.png
+
+test-installed:
+ $(CC) $(CFLAGS) \
+ `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
+ -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) \
+ -o pngtesti `$(BINPATH)/$(LIBNAME)-config --ldflags`
+ ./pngtesti pngtest.png
+
+clean:
+ $(RM_F) *.o libpng.a pngtest pngout.png libpng-config \
+ $(LIBSO) $(LIBSOMAJ)* pngtesti \
+ $(OLDSOVER) \
+ libpng.pc
+
+# DO NOT DELETE THIS LINE -- make depend depends on it.
+
+png.o png.pic.o: png.h pngconf.h pngpriv.h
+pngerror.o pngerror.pic.o: png.h pngconf.h pngpriv.h
+pngrio.o pngrio.pic.o: png.h pngconf.h pngpriv.h
+pngwio.o pngwio.pic.o: png.h pngconf.h pngpriv.h
+pngmem.o pngmem.pic.o: png.h pngconf.h pngpriv.h
+pngset.o pngset.pic.o: png.h pngconf.h pngpriv.h
+pngget.o pngget.pic.o: png.h pngconf.h pngpriv.h
+pngread.o pngread.pic.o: png.h pngconf.h pngpriv.h
+pngrtran.o pngrtran.pic.o: png.h pngconf.h pngpriv.h
+pngrutil.o pngrutil.pic.o: png.h pngconf.h pngpriv.h
+pngtrans.o pngtrans.pic.o: png.h pngconf.h pngpriv.h
+pngwrite.o pngwrite.pic.o: png.h pngconf.h pngpriv.h
+pngwtran.o pngwtran.pic.o: png.h pngconf.h pngpriv.h
+pngwutil.o pngwutil.pic.o: png.h pngconf.h pngpriv.h
+pngpread.o pngpread.pic.o: png.h pngconf.h pngpriv.h
+
+pngtest.o: png.h pngconf.h
diff --git a/src/3rdparty/libpng/scripts/makefile.bor b/src/3rdparty/libpng/scripts/makefile.bor
new file mode 100644
index 0000000..dcc3c63
--- /dev/null
+++ b/src/3rdparty/libpng/scripts/makefile.bor
@@ -0,0 +1,156 @@
+# Makefile for libpng
+# 16-bit Borland C++ (Note: All modules are compiled in C mode)
+# To build the library, do:
+# "make -fmakefile.bor -DMODEL=c"
+# or: "make -fmakefile.bor -DMODEL=l"
+#
+# ------------ Borland C++ ------------
+
+### Absolutely necessary for this makefile to work
+.AUTODEPEND
+
+## Where zlib.h, zconf.h and zlib_MODEL.lib are
+ZLIB_DIR=..\zlib
+
+## Compiler, linker and lib stuff
+CC=bcc
+LD=bcc
+LIB=tlib
+
+!ifndef MODEL
+MODEL=l
+!endif
+
+MODEL_ARG=-m$(MODEL)
+
+#TARGET_CPU=3
+# 2 = 286, 3 = 386, etc.
+!ifndef TARGET_CPU
+TARGET_CPU=2
+!endif
+
+# Use this if you don't want Borland's fancy exception handling
+# (for Borland C++ 4.0 or later)
+#NOEHLIB=noeh$(MODEL).lib
+
+!ifdef DEBUG
+CDEBUG=-v
+LDEBUG=-v
+!else
+CDEBUG=
+LDEBUG=
+!endif
+
+# STACKOFLOW=1
+!ifdef STACKOFLOW
+CDEBUG=$(CDEBUG) -N
+LDEBUG=$(LDEBUG) -N
+!endif
+
+# -X- turn on dependency generation in the object file
+# -w set all warnings on
+# -O2 optimize for speed
+# -Z global optimization
+CFLAGS=-O2 -Z -X- -w -I$(ZLIB_DIR) -$(TARGET_CPU) $(MODEL_ARG) $(CDEBUG)
+
+# -M generate map file
+LDFLAGS=-M -L$(ZLIB_DIR) $(MODEL_ARG) $(LDEBUG)
+
+## Variables
+
+OBJS = \
+ png.obj \
+ pngerror.obj \
+ pngget.obj \
+ pngmem.obj \
+ pngpread.obj \
+ pngread.obj \
+ pngrio.obj \
+ pngrtran.obj \
+ pngrutil.obj \
+ pngset.obj \
+ pngtrans.obj \
+ pngwio.obj \
+ pngwrite.obj \
+ pngwtran.obj \
+ pngwutil.obj
+
+LIBOBJS = \
+ +png.obj \
+ +pngerror.obj \
+ +pngget.obj \
+ +pngmem.obj \
+ +pngpread.obj \
+ +pngread.obj \
+ +pngrio.obj \
+ +pngrtran.obj \
+ +pngrutil.obj \
+ +pngset.obj \
+ +pngtrans.obj \
+ +pngwio.obj \
+ +pngwrite.obj \
+ +pngwtran.obj \
+ +pngwutil.obj
+
+LIBNAME=libpng$(MODEL).lib
+
+## Implicit rules
+
+# Braces let make "batch" calls to the compiler,
+# 2 calls instead of 12; space is important.
+.c.obj:
+ $(CC) $(CFLAGS) -c {$*.c }
+
+.c.exe:
+ $(CC) $(CFLAGS) $(LDFLAGS) $*.c $(LIBNAME) zlib_$(MODEL).lib $(NOEHLIB)
+
+## Major targets
+
+all: libpng pngtest
+
+libpng: $(LIBNAME)
+
+pngtest: pngtest$(MODEL).exe
+
+test: pngtest$(MODEL).exe
+ pngtest$(MODEL)
+
+## Minor Targets
+
+png.obj: png.c png.h pngconf.h pngpriv.h
+pngerror.obj: pngerror.c png.h pngconf.h pngpriv.h
+pngget.obj: pngget.c png.h pngconf.h pngpriv.h
+pngmem.obj: pngmem.c png.h pngconf.h pngpriv.h
+pngpread.obj: pngpread.c png.h pngconf.h pngpriv.h
+pngread.obj: pngread.c png.h pngconf.h pngpriv.h
+pngrio.obj: pngrio.c png.h pngconf.h pngpriv.h
+pngrtran.obj: pngrtran.c png.h pngconf.h pngpriv.h
+pngrutil.obj: pngrutil.c png.h pngconf.h pngpriv.h
+pngset.obj: pngset.c png.h pngconf.h pngpriv.h
+pngtrans.obj: pngtrans.c png.h pngconf.h pngpriv.h
+pngwio.obj: pngwio.c png.h pngconf.h pngpriv.h
+pngwrite.obj: pngwrite.c png.h pngconf.h pngpriv.h
+pngwtran.obj: pngwtran.c png.h pngconf.h pngpriv.h
+pngwutil.obj: pngwutil.c png.h pngconf.h pngpriv.h
+
+$(LIBNAME): $(OBJS)
+ -del $(LIBNAME)
+ $(LIB) $(LIBNAME) @&&|
+$(LIBOBJS), libpng$(MODEL)
+|
+
+pngtest$(MODEL).obj: pngtest.c png.h pngconf.h
+ $(CC) $(CFLAGS) -opngtest$(MODEL) -c pngtest.c
+
+pngtest$(MODEL).exe: pngtest$(MODEL).obj
+ $(LD) $(LDFLAGS) pngtest$(MODEL).obj $(LIBNAME) zlib_$(MODEL).lib $(NOEHLIB)
+
+# Clean up anything else you want
+clean:
+ -del *.obj
+ -del *.exe
+ -del *.lib
+ -del *.lst
+ -del *.map
+
+# End of makefile for libpng
diff --git a/src/3rdparty/libpng/scripts/makefile.cegcc b/src/3rdparty/libpng/scripts/makefile.cegcc
new file mode 100644
index 0000000..5b023df
--- /dev/null
+++ b/src/3rdparty/libpng/scripts/makefile.cegcc
@@ -0,0 +1,113 @@
+# Makefile for creating Windows CE release archives, with the
+# mingw32ce compiler.
+
+# Last updated: 22-Jul-2008
+
+# Copyright (C) 2008 Vincent Torri
+
+# This code is released under the libpng license.
+# For conditions of distribution and use, see the disclaimer
+# and license in png.h
+
+# To get some help, type
+#
+# make help
+#
+# To create the archives
+#
+# make
+#
+# To remove everything, type:
+#
+# make clean
+
+VERMAJ = 1
+VERMIN = 4
+VERMIC = 0
+VER = $(VERMAJ).$(VERMIN).$(VERMIC)
+NAME = libpng
+PACKAGE = $(NAME)-$(VER)
+
+BIN = libpng14-0.dll libpng-14.dll
+LIB = libpng14.a libpng14.dll.a libpng.a libpng.dll.a scripts/png32ce.def
+INCLUDE = png.h pngconf.h pngpriv.h
+PC = libpng14.pc libpng.pc
+
+MANIFESTVERBIN = "Libpng-$(VER): Binary files"
+MANIFESTVERDEV = "Libpng-$(VER): Developer files"
+MANIFESTVERDESC = "Libpng: the official PNG reference library"
+
+all: $(NAME)
+
+$(NAME): remove-old copy-src compilation copy manifest archive
+ @echo " * Removal of the directories"
+ @rm -rf $(PACKAGE)/ $(PACKAGE)-bin/ $(PACKAGE)-dev/
+
+remove-old:
+ @echo " * Removal of the old files"
+ @rm -rf $(PACKAGE)-bin*
+ @rm -rf $(PACKAGE)-dev*
+
+copy-src:
+ @echo " * Copy of source files"
+ @cp -R ../src/$(PACKAGE) .
+ @echo " * Creation of directories and files"
+ @mkdir -p $(PACKAGE)-bin/bin
+ @mkdir -p $(PACKAGE)-bin/manifest
+ @mkdir -p $(PACKAGE)-dev/lib/pkgconfig
+ @mkdir -p $(PACKAGE)-dev/include/$(NAME)$(VERMAJ)$(VERMIN)
+ @mkdir -p $(PACKAGE)-dev/manifest
+ @touch $(PACKAGE)-bin/manifest/$(PACKAGE)-bin.mft
+ @touch $(PACKAGE)-bin/manifest/$(PACKAGE)-bin.ver
+ @touch $(PACKAGE)-dev/manifest/$(PACKAGE)-dev.mft
+ @touch $(PACKAGE)-dev/manifest/$(PACKAGE)-dev.ver
+
+compilation:
+ @echo " * Compilation of $(PACKAGE)"
+ cd $(PACKAGE) && CPPFLAGS="$(CPPFLAGS) -DPNG_BUILD_DLL -DPNG_CONSOLE_IO_SUPPORTED -DPNG_NO_MMX_CODE -D_WIN32_WCE=0x0420" CFLAGS="$(CFLAGS) -mms-bitfields -O3 -pipe -fomit-frame-pointer" LDFLAGS="$(LDFLAGS) -Wl,--enable-auto-import -Wl,-s" ./configure --prefix=/opt/wince --host=arm-mingw32ce && make
+
+copy:
+ @echo " * Copy of binary and development files"
+ @for i in $(BIN); do \
+ cp $(PACKAGE)/.libs/$$i $(PACKAGE)-bin/bin; \
+ done
+ @for i in $(LIB); do \
+ cp $(PACKAGE)/.libs/$$i $(PACKAGE)-dev/lib; \
+ done
+ @for i in $(INCLUDE); do \
+ cp $(PACKAGE)/$$i $(PACKAGE)-dev/include/$(NAME)$(VERMAJ)$(VERMIN); \
+ done
+ @for i in $(PC); do \
+ cp $(PACKAGE)/$$i $(PACKAGE)-dev/lib/pkgconfig; \
+ done
+
+manifest:
+ @echo " * Creation of the manifest"
+ @cd $(PACKAGE)-bin && find * >> manifest/$(PACKAGE)-bin.mft
+ @cd $(PACKAGE)-bin && \
+ echo $(MANIFESTVERBIN) >> manifest/$(PACKAGE)-bin.ver && \
+ echo $(MANIFESTVERDESC) >> manifest/$(PACKAGE)-bin.ver
+ @cd $(PACKAGE)-dev && find * >> manifest/$(PACKAGE)-dev.mft
+ @cd $(PACKAGE)-dev && \
+ echo $(MANIFESTVERDEV) >> manifest/$(PACKAGE)-dev.ver && \
+ echo $(MANIFESTVERDESC) >> manifest/$(PACKAGE)-dev.ver
+
+archive:
+ @echo " * Creation of the archives"
+ @tar cf $(PACKAGE)-bin.tar $(PACKAGE)-bin
+ @bzip2 -9 $(PACKAGE)-bin.tar
+ @tar cf $(PACKAGE)-dev.tar $(PACKAGE)-dev
+ @bzip2 -9 $(PACKAGE)-dev.tar
+
+clean:
+ @echo " * Cleaning"
+ @rm -rf $(PACKAGE)*
+
+help:
+ @echo
+ @echo "To create the archives, type:"
+ @echo " make"
+ @echo
+ @echo "To remove everything, type:"
+ @echo " make clean"
+ @echo
diff --git a/src/3rdparty/libpng/scripts/makefile.cygwin b/src/3rdparty/libpng/scripts/makefile.cygwin
new file mode 100644
index 0000000..bdd904e
--- /dev/null
+++ b/src/3rdparty/libpng/scripts/makefile.cygwin
@@ -0,0 +1,293 @@
+# makefile for cygwin on x86
+# Builds both dll (with import lib) and static lib versions
+# of the library, and builds two copies of pngtest: one
+# statically linked and one dynamically linked.
+#
+# Copyright (C) 2002, 2006-2008 Soren Anderson, Charles Wilson,
+# and Glenn Randers-Pehrson, based on makefile for linux-elf w/mmx by:
+# Copyright (C) 1998-2000 Greg Roelofs
+# Copyright (C) 1996, 1997 Andreas Dilger
+#
+# This code is released under the libpng license.
+# For conditions of distribution and use, see the disclaimer
+# and license in png.h
+
+# This makefile intends to support building outside the src directory
+# if desired. When invoking it, specify an argument to SRCDIR on the
+# command line that points to the top of the directory where your source
+# is located.
+
+ifdef SRCDIR
+VPATH = $(SRCDIR)
+else
+SRCDIR = .
+endif
+
+# Override DESTDIR= on the make install command line to easily support
+# installing into a temporary location. Example:
+#
+# make install DESTDIR=/tmp/build/libpng
+#
+# If you're going to install into a temporary location
+# via DESTDIR, $(DESTDIR)$(prefix) must already exist before
+# you execute make install.
+
+DESTDIR=
+
+CC=gcc
+ifdef MINGW
+MINGW_CCFLAGS=-mno-cygwin -I/usr/include/mingw
+MINGW_LDFLAGS=-mno-cygwin -L/usr/lib/mingw
+endif
+
+# Where "make install" puts libpng*.a, *png*.dll, png.h, and pngconf.h
+ifndef prefix
+prefix=/usr
+$(warning You haven't specified a 'prefix=' location. Defaulting to "/usr")
+endif
+exec_prefix=$(prefix)
+
+# Where the zlib library and include files are located
+ZLIBLIB= /usr/lib
+ZLIBINC=
+#ZLIBLIB=../zlib
+#ZLIBINC=../zlib
+
+ALIGN=
+# for i386:
+#ALIGN=-malign-loops=2 -malign-functions=2
+
+WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
+ -Wmissing-declarations -Wtraditional -Wcast-align \
+ -Wstrict-prototypes -Wmissing-prototypes #-Wconversion
+
+CFLAGS= $(strip $(MINGW_CCFLAGS) $(addprefix -I,$(ZLIBINC)) \
+ -W -Wall -O3 $(ALIGN) -funroll-loops \
+ -fomit-frame-pointer) # $(WARNMORE) -g -DPNG_DEBUG=5
+
+LIBNAME = libpng14
+PNGMAJ = 14
+CYGDLL = 14
+PNGMIN = 1.4.0
+PNGVER = $(PNGMAJ).$(PNGMIN)
+
+SHAREDLIB=cygpng$(CYGDLL).dll
+STATLIB=libpng.a
+IMPLIB=libpng.dll.a
+SHAREDDEF=libpng.def
+LIBS=$(SHAREDLIB) $(STATLIB)
+EXE=.exe
+
+LDFLAGS=$(strip -L. $(MINGW_LDFLAGS) -lpng $(addprefix -L,$(ZLIBLIB)) -lz)
+LDSFLAGS=$(strip -shared -L. $(MINGW_LDFLAGS) -Wl,--export-all)
+LDEXTRA=-Wl,--out-implib=$(IMPLIB) $(addprefix -L,$(ZLIBLIB)) -lz
+
+MKDIR_P=/bin/mkdir -pv
+RANLIB=ranlib
+#RANLIB=echo
+
+INCPATH=$(prefix)/include
+LIBPATH=$(exec_prefix)/lib
+
+BINPATH=$(exec_prefix)/bin
+MANPATH=$(prefix)/man
+MAN3PATH=$(MANPATH)/man3
+MAN5PATH=$(MANPATH)/man5
+
+# cosmetic: shortened strings:
+S =$(SRCDIR)
+D =$(DESTDIR)
+DB =$(D)$(BINPATH)
+DI =$(D)$(INCPATH)
+DL =$(D)$(LIBPATH)
+
+OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
+ pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
+ pngwtran.o pngmem.o pngerror.o pngpread.o
+
+OBJSDLL = $(OBJS:.o=.pic.o)
+
+.SUFFIXES: .c .o .pic.o
+
+%.o : %.c
+ $(CC) -c $(CFLAGS) -o $@ $<
+%.pic.o : CFLAGS += -DPNG_BUILD_DLL
+%.pic.o : %.c
+ $(CC) -c $(CFLAGS) -o $@ $<
+
+all: all-static all-shared libpng.pc libpng-config libpng.pc libpng-config
+
+# Make this to verify that "make [...] install" will do what you want.
+buildsetup-tell:
+ @echo VPATH is set to: \"$(VPATH)\"
+ @echo prefix is set to: \"$(prefix)\"
+ @echo -e INCPATH,LIBPATH, etc. are set to:'\n' \
+ $(addprefix $(D),$(INCPATH)'\n' $(LIBPATH)'\n' $(BINPATH)'\n' \
+ $(MANPATH)'\n' $(MAN3PATH)'\n' $(MAN5PATH)'\n')'\n'
+
+libpng.pc: scripts/libpng.pc.in
+ @echo -e Making pkg-config file for this libpng installation..'\n' \
+ using PREFIX=\"$(prefix)\"'\n'
+ cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
+ -e s!@exec_prefix@!$(exec_prefix)! \
+ -e s!@libdir@!$(LIBPATH)! \
+ -e s!@includedir@!$(INCPATH)! \
+ -e s!-lpng14!-lpng14\ -lz! > libpng.pc
+
+libpng-config: scripts/libpng-config-head.in scripts/libpng-config-body.in
+ @echo -e Making $(LIBNAME) libpng-config file for this libpng \
+ installation..'\n' using PREFIX=\"$(prefix)\"'\n'
+ ( cat $(S)/scripts/libpng-config-head.in; \
+ echo prefix=\"$(prefix)\"; \
+ echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
+ echo L_opts=\"-L$(LIBPATH)\"; \
+ echo libs=\"-lpng$(CYGDLL) -lz\"; \
+ cat $(S)/scripts/libpng-config-body.in ) > libpng-config
+ chmod +x libpng-config
+
+static: all-static
+shared: all-shared
+all-static: $(STATLIB) pngtest-stat$(EXE)
+all-shared: $(SHAREDLIB) pngtest$(EXE)
+
+$(STATLIB): $(OBJS)
+ ar rc $@ $(OBJS)
+ $(RANLIB) $@
+
+$(SHAREDDEF): scripts/pngwin.def
+ cat $< | sed -e '1{G;s/^\(.*\)\(\n\)/EXPORTS/;};2,/^EXPORTS/d' | \
+ sed -e 's/\([^;]*\);/;/' > $@
+
+$(SHAREDLIB): $(OBJSDLL) $(SHAREDDEF)
+ $(CC) $(LDSFLAGS) -o $@ $(OBJSDLL) -L. $(LDEXTRA)
+
+pngtest$(EXE): pngtest.pic.o $(SHAREDLIB)
+ $(CC) $(CFLAGS) $< $(LDFLAGS) -o $@
+
+pngtest-stat$(EXE): pngtest.o $(STATLIB)
+ $(CC) -static $(CFLAGS) $< $(LDFLAGS) -o $@
+
+pngtest.pic.o: pngtest.c
+ $(CC) $(CFLAGS) -c $< -o $@
+
+pngtest.o: pngtest.c png.h pngconf.h
+ $(CC) $(CFLAGS) -c $< -o $@
+
+test: test-static test-shared
+
+test-static: pngtest-stat$(EXE)
+ ./pngtest-stat $(S)/pngtest.png
+
+test-shared: pngtest$(EXE)
+ ./pngtest $(S)/pngtest.png
+
+install-static: $(STATLIB) install-headers install-man
+ -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
+ install -m 644 $(STATLIB) $(DL)/$(LIBNAME).a
+ -@rm -f $(DL)/$(STATLIB)
+ (cd $(DL); ln -sf $(LIBNAME).a $(STATLIB))
+
+install-shared: $(SHAREDLIB) libpng.pc libpng-config install-headers install-man
+ -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
+ -@if [ ! -d $(DB) ]; then $(MKDIR_P) $(DB); fi
+ -@if [ ! -d $(DL)/pkgconfig ]; then $(MKDIR_P) $(DL)/pkgconfig; fi
+ -@/bin/rm -f $(DL)/pkgconfig/$(LIBNAME).pc
+ -@/bin/rm -f $(DL)/pkgconfig/libpng.pc
+ install -m 644 $(IMPLIB) $(DL)/$(LIBNAME).dll.a
+ -@rm -f $(DL)/$(IMPLIB)
+ (cd $(DL); ln -sf $(LIBNAME).dll.a $(IMPLIB))
+ install -s -m 755 $(SHAREDLIB) $(DB)
+ install -m 644 libpng.pc $(DL)/pkgconfig/$(LIBNAME).pc
+ (cd $(DL)/pkgconfig; ln -sf $(LIBNAME).pc libpng.pc)
+
+install-headers:
+ -@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
+ -@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
+ -@rm -f $(DI)/png.h
+ -@rm -f $(DI)/pngconf.h
+ install -m 644 $(S)/png.h $(S)/pngconf.h $(DI)/$(LIBNAME)
+ -@rm -f $(DI)/libpng
+ (cd $(DI); ln -sf $(LIBNAME) libpng; ln -sf $(LIBNAME)/* .)
+
+install-man:
+ -@if [ ! -d $(D)$(MAN3PATH) ]; then $(MKDIR_P) $(D)$(MAN3PATH); fi
+ -@if [ ! -d $(D)$(MAN5PATH) ]; then $(MKDIR_P) $(D)$(MAN5PATH); fi
+ install -m 644 $(S)/libpngpf.3 $(S)/libpng.3 $(D)$(MAN3PATH)
+ install -m 644 $(S)/png.5 $(D)$(MAN5PATH)
+
+install-config: libpng-config
+ -@if [ ! -d $(DB) ]; then $(MKDIR_P) $(DB); fi
+ -@/bin/rm -f $(DB)/libpng-config
+ -@/bin/rm -f $(DB)/$(LIBNAME)-config
+ cp libpng-config $(DB)/$(LIBNAME)-config
+ chmod 755 $(DB)/$(LIBNAME)-config
+ (cd $(DB); ln -sf $(LIBNAME)-config libpng-config)
+
+# Run this to verify that a future `configure' run will pick up the settings
+# you want.
+test-config-install: SHELL=/bin/bash
+test-config-install: $(DB)/libpng-config
+ @echo -e Testing libpng-config functions...'\n'
+ @ for TYRA in LDFLAGS CPPFLAGS CFLAGS LIBS VERSION; \
+ do \
+ printf "(%d)\t %10s =%s\n" $$(($$gytiu + 1)) $$TYRA \
+ "$$($(DB)/libpng-config `echo --$$TYRA |tr '[:upper:]' '[:lower:]'`)"; \
+ gytiu=$$(( $$gytiu + 1 )); \
+ done
+
+install: install-static install-shared install-man install-config
+
+# If you installed in $(DESTDIR), test-installed won't work until you
+# move the library to its final location. Use test-dd to test it
+# before then.
+
+test-dd:
+ echo
+ echo Testing installed dynamic shared library in $(DL).
+ $(CC) -I$(DI) $(CFLAGS) \
+ `$(BINPATH)/libpng14-config --cflags` pngtest.c \
+ -L$(DL) -L$(ZLIBLIB) \
+ -o pngtestd `$(BINPATH)/libpng14-config --ldflags`
+ ./pngtestd pngtest.png
+
+test-installed:
+ $(CC) $(CFLAGS) \
+ `$(BINPATH)/libpng14-config --cflags` pngtest.c \
+ -L$(ZLIBLIB) \
+ -o pngtesti$(EXE) `$(BINPATH)/libpng14-config --ldflags`
+ ./pngtesti$(EXE) pngtest.png
+
+clean:
+ /bin/rm -f *.pic.o *.o $(STATLIB) $(IMPLIB) $(SHAREDLIB) \
+ pngtest-stat$(EXE) pngtest$(EXE) pngout.png $(SHAREDDEF) \
+ libpng-config libpng.pc pngtesti$(EXE)
+
+DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
+writelock:
+ chmod a-w *.[ch35] $(DOCS) scripts/*
+
+.PHONY: buildsetup-tell libpng.pc libpng-config test-config-install clean
+
+# DO NOT DELETE THIS LINE -- make depend depends on it.
+
+png.o png.pic.o: png.h pngconf.h pngpriv.h png.c
+pngerror.o pngerror.pic.o: png.h pngconf.h pngpriv.h pngerror.c
+pngrio.o pngrio.pic.o: png.h pngconf.h pngpriv.h pngrio.c
+pngwio.o pngwio.pic.o: png.h pngconf.h pngpriv.h pngwio.c
+pngmem.o pngmem.pic.o: png.h pngconf.h pngpriv.h pngmem.c
+pngset.o pngset.pic.o: png.h pngconf.h pngpriv.h pngset.c
+pngget.o pngget.pic.o: png.h pngconf.h pngpriv.h pngget.c
+pngread.o pngread.pic.o: png.h pngconf.h pngpriv.h pngread.c
+pngrtran.o pngrtran.pic.o: png.h pngconf.h pngpriv.h pngrtran.c
+pngrutil.o pngrutil.pic.o: png.h pngconf.h pngpriv.h pngrutil.c
+pngtrans.o pngtrans.pic.o: png.h pngconf.h pngpriv.h pngtrans.c
+pngwrite.o pngwrite.pic.o: png.h pngconf.h pngpriv.h pngwrite.c
+pngwtran.o pngwtran.pic.o: png.h pngconf.h pngpriv.h pngwtran.c
+pngwutil.o pngwutil.pic.o: png.h pngconf.h pngpriv.h pngwutil.c
+pngpread.o pngpread.pic.o: png.h pngconf.h pngpriv.h pngpread.c
+
+pngtest.o: png.h pngconf.h pngtest.c
+pngtest-stat.o: png.h pngconf.h pngtest.c
+
+
+
diff --git a/src/3rdparty/libpng/scripts/makefile.darwin b/src/3rdparty/libpng/scripts/makefile.darwin
new file mode 100644
index 0000000..a35ad70
--- /dev/null
+++ b/src/3rdparty/libpng/scripts/makefile.darwin
@@ -0,0 +1,237 @@
+# makefile for libpng on Darwin / Mac OS X
+# Copyright (C) 2002, 2004, 2006, 2008 Glenn Randers-Pehrson
+# Copyright (C) 2001 Christoph Pfisterer
+# derived from makefile.linux:
+# Copyright (C) 1998, 1999 Greg Roelofs
+# Copyright (C) 1996, 1997 Andreas Dilger
+#
+# This code is released under the libpng license.
+# For conditions of distribution and use, see the disclaimer
+# and license in png.h
+
+# where "make install" puts libpng.a, libpng14.dylib, png.h and pngconf.h
+prefix=/usr/local
+exec_prefix=$(prefix)
+
+# Where the zlib library and include files are located
+#ZLIBLIB=/usr/local/lib
+#ZLIBINC=/usr/local/include
+ZLIBLIB=../zlib
+ZLIBINC=../zlib
+
+# Library name:
+LIBNAME = libpng14
+PNGMAJ = 14
+PNGMIN = 1.4.0
+PNGVER = $(PNGMAJ).$(PNGMIN)
+
+# Shared library names:
+LIBSO=$(LIBNAME).dylib
+LIBSOMAJ=$(LIBNAME).$(PNGMAJ).dylib
+LIBSOVER=$(LIBNAME).$(PNGVER).dylib
+OLDSO=libpng.dylib
+OLDSOMAJ=libpng.14.dylib
+OLDSOVER=libpng.14.$(PNGMIN).dylib
+
+# Utilities:
+CC=cc
+AR_RC=ar rc
+MKDIR_P=mkdir -p
+LN_SF=ln -sf
+RANLIB=ranlib
+RM_F=/bin/rm -f
+
+# CFLAGS=-I$(ZLIBINC) -W -Wall -O3 -funroll-loops
+CFLAGS=-I$(ZLIBINC) -W -Wall -O -funroll-loops
+LDFLAGS=-L. -L$(ZLIBLIB) -lpng14 -lz
+
+INCPATH=$(prefix)/include
+LIBPATH=$(exec_prefix)/lib
+MANPATH=$(prefix)/man
+BINPATH=$(exec_prefix)/bin
+
+# override DESTDIR= on the make install command line to easily support
+# installing into a temporary location. Example:
+#
+# make install DESTDIR=/tmp/build/libpng
+#
+# If you're going to install into a temporary location
+# via DESTDIR, $(DESTDIR)$(prefix) must already exist before
+# you execute make install.
+DESTDIR=
+
+DB=$(DESTDIR)$(BINPATH)
+DI=$(DESTDIR)$(INCPATH)
+DL=$(DESTDIR)$(LIBPATH)
+DM=$(DESTDIR)$(MANPATH)
+
+OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
+ pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
+ pngwtran.o pngmem.o pngerror.o pngpread.o
+
+OBJSDLL = $(OBJS:.o=.pic.o)
+
+.SUFFIXES: .c .o .pic.o
+
+.c.pic.o:
+ $(CC) -c $(CFLAGS) -fno-common -o $@ $*.c
+
+all: libpng.a $(LIBSO) pngtest libpng.pc libpng-config
+
+libpng.a: $(OBJS)
+ $(AR_RC) $@ $(OBJS)
+ $(RANLIB) $@
+
+libpng.pc:
+ cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
+ -e s!@exec_prefix@!$(exec_prefix)! \
+ -e s!@libdir@!$(LIBPATH)! \
+ -e s!@includedir@!$(INCPATH)! \
+ -e s!-lpng14!-lpng14\ -lz! > libpng.pc
+
+libpng-config:
+ ( cat scripts/libpng-config-head.in; \
+ echo prefix=\"$(prefix)\"; \
+ echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
+ echo L_opts=\"-L$(LIBPATH)\"; \
+ echo libs=\"-lpng14 -lz\"; \
+ cat scripts/libpng-config-body.in ) > libpng-config
+ chmod +x libpng-config
+
+$(LIBSO): $(LIBSOMAJ)
+ $(LN_SF) $(LIBSOMAJ) $(LIBSO)
+
+$(LIBSOMAJ): $(LIBSOVER)
+ $(LN_SF) $(LIBSOVER) $(LIBSOMAJ)
+
+$(LIBSOVER): $(OBJSDLL)
+ $(CC) -dynamiclib \
+ -install_name $(LIBPATH)/$(LIBSOMAJ) \
+ -current_version 14 -compatibility_version 14 \
+ -o $(LIBSOVER) \
+ $(OBJSDLL) -L$(ZLIBLIB) -lz
+
+$(OLDSOVER): $(OBJSDLL)
+ $(CC) -dynamiclib \
+ -install_name $(LIBPATH)/$(OLDSOMAJ) \
+ -current_version 14 -compatibility_version 14 \
+ -o $(OLDSOVER) \
+ $(OBJSDLL) -L$(ZLIBLIB) -lz
+
+pngtest: pngtest.o $(LIBSO)
+ $(CC) -o pngtest $(CFLAGS) pngtest.o $(LDFLAGS)
+
+test: pngtest
+ ./pngtest
+
+install-headers: png.h pngconf.h
+ -@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
+ -@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
+ cp png.h pngconf.h $(DI)/$(LIBNAME)
+ chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h
+ -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h
+ -@$(RM_F) $(DI)/libpng
+ (cd $(DI); $(LN_SF) $(LIBNAME) libpng; $(LN_SF) $(LIBNAME)/* .)
+
+install-static: install-headers libpng.a
+ -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
+ cp libpng.a $(DL)/$(LIBNAME).a
+ chmod 644 $(DL)/$(LIBNAME).a
+ $(RANLIB) $(DL)/$(LIBNAME).a
+ -@$(RM_F) $(DL)/libpng.a
+ (cd $(DL); $(LN_SF) $(LIBNAME).a libpng.a)
+
+install-shared: install-headers $(LIBSO) libpng.pc \
+ $(OLDSOVER)
+ -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
+ -@$(RM_F) $(DL)/$(LIBNAME).$(PNGVER)*.dylib
+ -@$(RM_F) $(DL)/$(LIBNAME).$(PNGMAJ)*.dylib
+ -@$(RM_F) $(DL)/$(LIBSO)
+ -@$(RM_F) $(DL)/$(OLDSO)
+ -@$(RM_F) $(DL)/$(OLDSOMAJ)
+ -@$(RM_F) $(DL)/libpng.3.$(PNGMIN)*.dylib
+ cp $(LIBSOVER) $(DL)
+ cp $(OLDSOVER) $(DL)
+ chmod 755 $(DL)/$(LIBSOVER)
+ chmod 755 $(DL)/$(OLDSOVER)
+ (cd $(DL); \
+ $(LN_SF) $(OLDSOVER) $(OLDSOMAJ); \
+ $(LN_SF) $(OLDSOMAJ) $(OLDSO); \
+ $(LN_SF) $(LIBSOVER) $(LIBSOMAJ); \
+ $(LN_SF) $(LIBSOMAJ) $(LIBSO))
+ -@if [ ! -d $(DL)/pkgconfig ]; then $(MKDIR_P) $(DL)/pkgconfig; fi
+ -@$(RM_F) $(DL)/pkgconfig/$(LIBNAME).pc
+ -@$(RM_F) $(DL)/pkgconfig/libpng.pc
+ cp libpng.pc $(DL)/pkgconfig/$(LIBNAME).pc
+ chmod 644 $(DL)/pkgconfig/$(LIBNAME).pc
+ (cd $(DL)/pkgconfig; $(LN_SF) $(LIBNAME).pc libpng.pc)
+
+install-man: libpng.3 libpngpf.3 png.5
+ -@if [ ! -d $(DM) ]; then $(MKDIR_P) $(DM); fi
+ -@if [ ! -d $(DM)/man3 ]; then $(MKDIR_P) $(DM)/man3; fi
+ -@$(RM_F) $(DM)/man3/libpng.3
+ -@$(RM_F) $(DM)/man3/libpngpf.3
+ cp libpng.3 $(DM)/man3
+ cp libpngpf.3 $(DM)/man3
+ -@if [ ! -d $(DM)/man5 ]; then $(MKDIR_P) $(DM)/man5; fi
+ -@$(RM_F) $(DM)/man5/png.5
+ cp png.5 $(DM)/man5
+
+install-config: libpng-config
+ -@if [ ! -d $(DB) ]; then $(MKDIR_P) $(DB); fi
+ -@$(RM_F) $(DB)/libpng-config
+ -@$(RM_F) $(DB)/$(LIBNAME)-config
+ cp libpng-config $(DB)/$(LIBNAME)-config
+ chmod 755 $(DB)/$(LIBNAME)-config
+ (cd $(DB); $(LN_SF) $(LIBNAME)-config libpng-config)
+
+install: install-static install-shared install-man install-config
+
+# If you installed in $(DESTDIR), test-installed won't work until you
+# move the library to its final location. Use test-dd to test it
+# before then.
+
+test-dd:
+ echo
+ echo Testing installed dynamic shared library in $(DL).
+ $(CC) -I$(DI) -I$(ZLIBINC) \
+ `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
+ -L$(DL) -L$(ZLIBLIB) \
+ -o pngtestd `$(BINPATH)/$(LIBNAME)-config --ldflags`
+ ./pngtestd pngtest.png
+
+test-installed:
+ $(CC) $(CFLAGS) \
+ `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
+ -L$(ZLIBLIB) \
+ -o pngtesti `$(BINPATH)/$(LIBNAME)-config --ldflags`
+ ./pngtesti pngtest.png
+
+clean:
+ $(RM_F) *.o libpng.a pngtest pngout.png libpng-config \
+ $(OLDSOVER) \
+ libpng.pc $(LIBNAME).*dylib pngtesti
+
+DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
+writelock:
+ chmod a-w *.[ch35] $(DOCS) scripts/*
+
+# DO NOT DELETE THIS LINE -- make depend depends on it.
+
+png.o png.pic.o: png.h pngconf.h pngpriv.h
+pngerror.o pngerror.pic.o: png.h pngconf.h pngpriv.h
+pngrio.o pngrio.pic.o: png.h pngconf.h pngpriv.h
+pngwio.o pngwio.pic.o: png.h pngconf.h pngpriv.h
+pngmem.o pngmem.pic.o: png.h pngconf.h pngpriv.h
+pngset.o pngset.pic.o: png.h pngconf.h pngpriv.h
+pngget.o pngget.pic.o: png.h pngconf.h pngpriv.h
+pngread.o pngread.pic.o: png.h pngconf.h pngpriv.h
+pngrtran.o pngrtran.pic.o: png.h pngconf.h pngpriv.h
+pngrutil.o pngrutil.pic.o: png.h pngconf.h pngpriv.h
+pngtrans.o pngtrans.pic.o: png.h pngconf.h pngpriv.h
+pngwrite.o pngwrite.pic.o: png.h pngconf.h pngpriv.h
+pngwtran.o pngwtran.pic.o: png.h pngconf.h pngpriv.h
+pngwutil.o pngwutil.pic.o: png.h pngconf.h pngpriv.h
+pngpread.o pngpread.pic.o: png.h pngconf.h pngpriv.h
+
+pngtest.o: png.h pngconf.h
diff --git a/src/3rdparty/libpng/scripts/makefile.dec b/src/3rdparty/libpng/scripts/makefile.dec
new file mode 100644
index 0000000..eb1fd14
--- /dev/null
+++ b/src/3rdparty/libpng/scripts/makefile.dec
@@ -0,0 +1,217 @@
+# makefile for libpng on DEC Alpha Unix
+# Copyright (C) 2000-2002, 2006 Glenn Randers-Pehrson
+# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
+#
+# This code is released under the libpng license.
+# For conditions of distribution and use, see the disclaimer
+# and license in png.h
+
+# Library name:
+PNGMAJ = 14
+PNGMIN = 1.4.0
+PNGVER = $(PNGMAJ).$(PNGMIN)
+LIBNAME = libpng14
+
+# Shared library names:
+LIBSO=$(LIBNAME).so
+LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
+LIBSOVER=$(LIBNAME).so.$(PNGVER)
+OLDSO=libpng.so
+OLDSOMAJ=libpng.so.14
+OLDSOVER=libpng.so.14.$(PNGMIN)
+
+# Utilities:
+AR_RC=ar rc
+CC=cc
+MKDIR_P=mkdir
+LN_SF=ln -f -s
+RANLIB=ranlib
+RM_F=/bin/rm -f
+
+# where make install puts libpng.a and png.h
+prefix=/usr/local
+exec_prefix=$(prefix)
+INCPATH=$(prefix)/include
+LIBPATH=$(exec_prefix)/lib
+MANPATH=$(prefix)/man
+BINPATH=$(exec_prefix)/bin
+
+# override DESTDIR= on the make install command line to easily support
+# installing into a temporary location. Example:
+#
+# make install DESTDIR=/tmp/build/libpng
+#
+# If you're going to install into a temporary location
+# via DESTDIR, $(DESTDIR)$(prefix) must already exist before
+# you execute make install.
+DESTDIR=
+
+DB=$(DESTDIR)$(BINPATH)
+DI=$(DESTDIR)$(INCPATH)
+DL=$(DESTDIR)$(LIBPATH)
+DM=$(DESTDIR)$(MANPATH)
+
+# Where the zlib library and include files are located
+#ZLIBLIB=/usr/local/lib
+#ZLIBINC=/usr/local/include
+ZLIBLIB=../zlib
+ZLIBINC=../zlib
+
+CFLAGS=-std -w1 -I$(ZLIBINC) -O # -g -DPNG_DEBUG=1
+LDFLAGS=-L$(ZLIBLIB) -rpath $(ZLIBLIB) libpng.a -lz -lm
+
+OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
+ pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
+ pngwtran.o pngmem.o pngerror.o pngpread.o
+
+all: $(LIBSO) libpng.a pngtest libpng.pc libpng-config
+
+libpng.a: $(OBJS)
+ $(AR_RC) $@ $(OBJS)
+ $(RANLIB) $@
+
+libpng.pc:
+ cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
+ -e s!@exec_prefix@!$(exec_prefix)! \
+ -e s!@libdir@!$(LIBPATH)! \
+ -e s!@includedir@!$(INCPATH)! \
+ -e s!-lpng14!-lpng14\ -lz\ -lm! > libpng.pc
+
+libpng-config:
+ ( cat scripts/libpng-config-head.in; \
+ echo prefix=\"$(prefix)\"; \
+ echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
+ echo ccopts=\"-std\"; \
+ echo L_opts=\"-L$(LIBPATH)\"; \
+ echo libs=\"-lpng14 -lz -lm\"; \
+ cat scripts/libpng-config-body.in ) > libpng-config
+ chmod +x libpng-config
+
+$(LIBSO): $(LIBSOMAJ)
+ $(LN_SF) $(LIBSOMAJ) $(LIBSO)
+
+$(LIBSOMAJ): $(LIBSOVER)
+ $(LN_SF) $(LIBSOVER) $(LIBSOMAJ)
+
+$(LIBSOVER): $(OBJS)
+ $(CC) -shared -o $@ $(OBJS) -L$(ZLIBLIB) \
+ -soname $(LIBSOMAJ)
+
+$(OLDSOVER): $(OBJS)
+ $(CC) -shared -o $@ $(OBJS) -L$(ZLIBLIB) \
+ -soname $(OLDSOMAJ)
+
+pngtest: pngtest.o libpng.a
+ $(CC) -o pngtest $(CFLAGS) pngtest.o $(LDFLAGS)
+
+test: pngtest
+ ./pngtest
+
+install-headers: png.h pngconf.h
+ -@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
+ -@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
+ cp png.h pngconf.h $(DI)/$(LIBNAME)
+ chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h
+ -@/bin/rm -f $(DI)/png.h $(DI)/pngconf.h
+ -@/bin/rm -f $(DI)/libpng
+ (cd $(DI); $(LN_SF)(LIBNAME) libpng; $(LN_SF)(LIBNAME)/* .)
+
+install-static: install-headers libpng.a
+ -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
+ cp libpng.a $(DL)/$(LIBNAME).a
+ chmod 644 $(DL)/$(LIBNAME).a
+ -@/bin/rm -f $(DL)/libpng.a
+ (cd $(DL); $(LN_SF)(LIBNAME).a libpng.a)
+
+install-shared: install-headers $(LIBSOVER) libpng.pc \
+ $(OLDSOVER)
+ -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
+ -@/bin/rm -f $(DL)/$(LIBSOVER)* $(DL)/$(LIBSO)
+ -@/bin/rm -f $(DL)/$(LIBSOMAJ)
+ -@/bin/rm -f $(DL)/$(OLDSO)
+ -@/bin/rm -f $(DL)/$(OLDSOMAJ)
+ -@/bin/rm -f $(DL)/$(OLDSOVER)*
+ cp $(LIBSOVER) $(DL)
+ cp $(OLDSOVER) $(DL)
+ chmod 755 $(DL)/$(LIBSOVER)
+ chmod 755 $(DL)/$(OLDSOVER)
+ (cd $(DL); \
+ $(LN_SF) $(OLDSOVER) $(OLDSOMAJ); \
+ $(LN_SF) $(OLDSOMAJ) $(OLDSO); \
+ $(LN_SF)(LIBSOVER) $(LIBSOMAJ); \
+ $(LN_SF)(LIBSOMAJ) $(LIBSO))
+ -@if [ ! -d $(DL)/pkgconfig ]; then $(MKDIR_P) $(DL)/pkgconfig; fi
+ -@/bin/rm -f $(DL)/pkgconfig/$(LIBNAME).pc
+ -@/bin/rm -f $(DL)/pkgconfig/libpng.pc
+ cp libpng.pc $(DL)/pkgconfig/$(LIBNAME).pc
+ chmod 644 $(DL)/pkgconfig/$(LIBNAME).pc
+ (cd $(DL)/pkgconfig; $(LN_SF)(LIBNAME).pc libpng.pc)
+
+install-man: libpng.3 libpngpf.3 png.5
+ -@if [ ! -d $(DM) ]; then $(MKDIR_P) $(DM); fi
+ -@if [ ! -d $(DM)/man3 ]; then $(MKDIR_P) $(DM)/man3; fi
+ -@/bin/rm -f $(DM)/man3/libpng.3
+ -@/bin/rm -f $(DM)/man3/libpngpf.3
+ cp libpng.3 $(DM)/man3
+ cp libpngpf.3 $(DM)/man3
+ -@if [ ! -d $(DM)/man5 ]; then $(MKDIR_P) $(DM)/man5; fi
+ -@/bin/rm -f $(DM)/man5/png.5
+ cp png.5 $(DM)/man5
+
+install-config: libpng-config
+ -@if [ ! -d $(DB) ]; then $(MKDIR_P) $(DB); fi
+ -@/bin/rm -f $(DB)/libpng-config
+ -@/bin/rm -f $(DB)/$(LIBNAME)-config
+ cp libpng-config $(DB)/$(LIBNAME)-config
+ chmod 755 $(DB)/$(LIBNAME)-config
+ (cd $(DB); $(LN_SF)(LIBNAME)-config libpng-config)
+
+install: install-static install-shared install-man install-config
+
+# If you installed in $(DESTDIR), test-installed won't work until you
+# move the library to its final location. Use test-dd to test it
+# before then.
+
+test-dd:
+ echo
+ echo Testing installed dynamic shared library in $(DL).
+ $(CC) -w1 -I$(DI) -I$(ZLIBINC) \
+ `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
+ -L$(DL) -L$(ZLIBLIB) -R$(ZLIBLIB) -R$(DL) \
+ -o pngtestd `$(BINPATH)/$(LIBNAME)-config --ldflags`
+ ./pngtestd pngtest.png
+
+test-installed:
+ echo
+ echo Testing installed dynamic shared library.
+ $(CC) -w1 -I$(ZLIBINC) \
+ `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
+ -L$(ZLIBLIB) -R$(ZLIBLIB) \
+ -o pngtesti `$(BINPATH)/$(LIBNAME)-config --ldflags`
+ ./pngtesti pngtest.png
+
+clean:
+ /bin/rm -f *.o libpng.a pngtest pngtesti pngout.png \
+ libpng-config $(LIBSO) $(LIBSOMAJ)* \
+ $(OLDSOVER) \
+ libpng.pc
+
+# DO NOT DELETE THIS LINE -- make depend depends on it.
+
+png.o: png.h pngconf.h pngpriv.h
+pngerror.o: png.h pngconf.h pngpriv.h
+pngrio.o: png.h pngconf.h pngpriv.h
+pngwio.o: png.h pngconf.h pngpriv.h
+pngmem.o: png.h pngconf.h pngpriv.h
+pngset.o: png.h pngconf.h pngpriv.h
+pngget.o: png.h pngconf.h pngpriv.h
+pngread.o: png.h pngconf.h pngpriv.h
+pngrtran.o: png.h pngconf.h pngpriv.h
+pngrutil.o: png.h pngconf.h pngpriv.h
+pngtrans.o: png.h pngconf.h pngpriv.h
+pngwrite.o: png.h pngconf.h pngpriv.h
+pngwtran.o: png.h pngconf.h pngpriv.h
+pngwutil.o: png.h pngconf.h pngpriv.h
+pngpread.o: png.h pngconf.h pngpriv.h
+
+pngtest.o: png.h pngconf.h
diff --git a/src/3rdparty/libpng/scripts/makefile.dj2 b/src/3rdparty/libpng/scripts/makefile.dj2
new file mode 100644
index 0000000..021e969
--- /dev/null
+++ b/src/3rdparty/libpng/scripts/makefile.dj2
@@ -0,0 +1,58 @@
+# DJGPP (DOS gcc) makefile for libpng
+# Copyright (C) 2002, 2006, 2009 Glenn Randers-Pehrson
+# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
+#
+# This code is released under the libpng license.
+# For conditions of distribution and use, see the disclaimer
+# and license in png.h
+
+# where make install will put libpng.a and png.h
+#prefix=/usr/local
+prefix=.
+INCPATH=$(prefix)/include
+LIBPATH=$(prefix)/lib
+
+CC=gcc
+CFLAGS=-I../zlib -O
+LDFLAGS=-L. -L../zlib/ -lpng -lz -lm
+
+RANLIB=ranlib
+
+OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
+ pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o pngwtran.o \
+ pngmem.o pngerror.o pngpread.o
+
+all: libpng.a pngtest
+
+libpng.a: $(OBJS)
+ ar rc $@ $(OBJS)
+ $(RANLIB) $@
+
+pngtest: pngtest.o libpng.a
+ $(CC) -o pngtest $(CFLAGS) pngtest.o $(LDFLAGS)
+ coff2exe pngtest
+
+test: pngtest
+ ./pngtest
+clean:
+ rm -f *.o libpng.a pngtest pngout.png
+
+# DO NOT DELETE THIS LINE -- make depend depends on it.
+
+png.o: png.h pngconf.h pngpriv.h
+pngerror.o: png.h pngconf.h pngpriv.h
+pngrio.o: png.h pngconf.h pngpriv.h
+pngwio.o: png.h pngconf.h pngpriv.h
+pngmem.o: png.h pngconf.h pngpriv.h
+pngset.o: png.h pngconf.h pngpriv.h
+pngget.o: png.h pngconf.h pngpriv.h
+pngread.o: png.h pngconf.h pngpriv.h
+pngpread.o: png.h pngconf.h pngpriv.h
+pngrtran.o: png.h pngconf.h pngpriv.h
+pngrutil.o: png.h pngconf.h pngpriv.h
+pngtrans.o: png.h pngconf.h pngpriv.h
+pngwrite.o: png.h pngconf.h pngpriv.h
+pngwtran.o: png.h pngconf.h pngpriv.h
+pngwutil.o: png.h pngconf.h pngpriv.h
+
+pngtest.o: png.h pngconf.h
diff --git a/src/3rdparty/libpng/scripts/makefile.elf b/src/3rdparty/libpng/scripts/makefile.elf
new file mode 100644
index 0000000..7d70af1
--- /dev/null
+++ b/src/3rdparty/libpng/scripts/makefile.elf
@@ -0,0 +1,279 @@
+# makefile for libpng.a and libpng14.so on Linux ELF with gcc
+# Copyright (C) 1998, 1999, 2002, 2006, 2008 Greg Roelofs
+# and Glenn Randers-Pehrson
+# Copyright (C) 1996, 1997 Andreas Dilger
+#
+# This code is released under the libpng license.
+# For conditions of distribution and use, see the disclaimer
+# and license in png.h
+
+# Modified for Debian by Junichi Uekawa and Josselin Mouette
+# Major modifications are:
+# * link libpng explicitly with libz and libm
+# * $(OLDSO).14 is a symlink rather than a different library
+# * versioned symbols
+
+# Library name:
+LIBNAME = libpng14
+PNGMAJ = 14
+PNGMIN = 1.4.0
+PNGVER = $(PNGMAJ).$(PNGMIN)
+
+# Shared library names:
+LIBSO=$(LIBNAME).so
+LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
+LIBSOVER=$(LIBNAME).so.$(PNGVER)
+OLDSO=libpng.so
+OLDSOMAJ=libpng.so.14
+OLDSOVER=libpng.so.14.$(PNGMIN)
+
+# Utilities:
+AR_RC=ar rc
+CC=gcc
+MKDIR_P=mkdir -p
+LN_SF=ln -sf
+RANLIB=ranlib
+RM_F=/bin/rm -f
+
+# where "make install" puts libpng14.a, libpng14.so*,
+# libpng14/png.h and libpng14/pngconf.h
+# Prefix must be a full pathname.
+prefix=/usr/local
+exec_prefix=$(prefix)
+
+# Where the zlib library and include files are located.
+ZLIBLIB=/usr/local/lib
+ZLIBINC=/usr/local/include
+# ZLIBLIB=../zlib
+# ZLIBINC=../zlib
+
+ALIGN=
+# for i386:
+#ALIGN=-malign-loops=2 -malign-functions=2
+
+WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
+ -Wmissing-declarations -Wtraditional -Wcast-align \
+ -Wstrict-prototypes -Wmissing-prototypes #-Wconversion
+
+# for pgcc version 2.95.1, -O3 is buggy; don't use it.
+
+CFLAGS=-W -Wall -D_REENTRANT -O2 \
+ $(ALIGN) # $(WARNMORE) -g -DPNG_DEBUG=5
+
+LDFLAGS=-L. -lpng14
+LDFLAGS_A=libpng.a -lz -lm
+LIBADDFLAGS=-lz -lm
+
+
+INCPATH=$(prefix)/include
+LIBPATH=$(exec_prefix)/lib
+MANPATH=$(prefix)/man
+BINPATH=$(exec_prefix)/bin
+
+# override DESTDIR= on the make install command line to easily support
+# installing into a temporary location. Example:
+#
+# make install DESTDIR=/tmp/build/libpng
+#
+# If you're going to install into a temporary location
+# via DESTDIR, $(DESTDIR)$(prefix) must already exist before
+# you execute make install.
+DESTDIR=
+
+DB=$(DESTDIR)$(BINPATH)
+DI=$(DESTDIR)$(INCPATH)
+DL=$(DESTDIR)$(LIBPATH)
+DM=$(DESTDIR)$(MANPATH)
+
+OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
+ pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
+ pngwtran.o pngmem.o pngerror.o pngpread.o
+
+OBJSDLL = $(OBJS:.o=.pic.o)
+
+.SUFFIXES: .c .o .pic.o
+
+.c.pic.o:
+ $(CC) -c $(CFLAGS) -fPIC -o $@ $*.c
+
+all: libpng.a $(LIBSO) pngtest pngtest-static libpng.pc libpng-config
+
+libpng.a: $(OBJS)
+ $(AR_RC) $@ $(OBJS)
+ $(RANLIB) $@
+
+libpng.pc:
+ cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
+ -e s!@exec_prefix@!$(exec_prefix)! \
+ -e s!@libdir@!$(LIBPATH)! \
+ -e s!@includedir@!$(INCPATH)! \
+ -e s!-lpng14!-lpng14\ -lz\ -lm! > libpng.pc
+
+libpng.syms: png.h pngconf.h
+ $(CC) $(CFLAGS) -E -DPNG_BUILDSYMS -DPNG_INTERNAL png.h |\
+ awk -F '[\t [\\]();]' -v PNGMAJ=$(PNGMAJ) 'BEGIN{printf("PNG14_%s {global:\n",PNGMAJ)}\
+ { for (i=1;i+2<=NF;++i)\
+ if ($$(i)=="PNG_FUNCTION_EXPORT" && $$(i+2)=="END")\
+ print $$(i+1) ";";\
+ for (i=1;i+1<=NF;++i)\
+ if ($$(i)=="PNG_DATA_EXPORT")\
+ print $$(i+1) ";";}\
+ END{print "local: *; };"}' >$@.new
+ $(RM_F) $@
+ mv $@.new $@
+
+libpng-config:
+ ( cat scripts/libpng-config-head.in; \
+ echo prefix=\"$(prefix)\"; \
+ echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
+ echo L_opts=\"\"; \
+ echo R_opts=\"\"; \
+ echo libs=\"-lpng14\"; \
+ echo all_libs=\"-lpng14 $(LIBADDFLAGS)\"; \
+ cat scripts/libpng-config-body.in ) > libpng-config
+ chmod +x libpng-config
+
+$(LIBSO): $(LIBSOMAJ)
+ $(LN_SF) $(LIBSOMAJ) $(LIBSO)
+
+$(LIBSOMAJ): $(LIBSOVER)
+ $(LN_SF) $(LIBSOVER) $(LIBSOMAJ)
+
+$(LIBSOVER): $(OBJSDLL) libpng.syms
+ $(CC) -shared -Wl,-soname,$(LIBSOMAJ) \
+ -Wl,-version-script,libpng.syms \
+ -o $(LIBSOVER) \
+ $(OBJSDLL)
+
+$(OLDSOVER): $(OBJSDLL) libpng.syms
+ $(CC) -shared -Wl,-soname,$(OLDSOMAJ) \
+ -Wl,-version-script,libpng.syms \
+ -o $(OLDSOVER) \
+ $(OBJSDLL)
+
+pngtest: pngtest.o $(LIBSO)
+ $(CC) -o pngtest $(CFLAGS) pngtest.o $(LDFLAGS)
+
+pngtest-static: pngtest.o libpng.a
+ $(CC) -o pngtest-static $(CFLAGS) pngtest.o $(LDFLAGS_A)
+
+test: pngtest pngtest-static
+ @echo ""
+ @echo " Running pngtest dynamically linked with $(LIBSO):"
+ @echo ""
+ LD_LIBRARY_PATH=".:${LD_LIBRARY_PATH}" ./pngtest
+ @echo ""
+ @echo " Running pngtest statically linked with libpng.a:"
+ @echo ""
+ ./pngtest-static
+
+install-headers: png.h pngconf.h
+ -@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
+ -@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
+ cp png.h pngconf.h $(DI)/$(LIBNAME)
+ chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h
+ -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h
+ -@$(RM_F) $(DI)/libpng
+ (cd $(DI); $(LN_SF) $(LIBNAME) libpng; $(LN_SF) $(LIBNAME)/* .)
+
+install-static: install-headers libpng.a
+ -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
+ cp libpng.a $(DL)/$(LIBNAME).a
+ chmod 644 $(DL)/$(LIBNAME).a
+ -@$(RM_F) $(DL)/libpng.a
+ (cd $(DL); $(LN_SF) $(LIBNAME).a libpng.a)
+
+install-shared: install-headers $(LIBSOVER) libpng.pc \
+ $(OLDSOVER)
+ -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
+ -@$(RM_F) $(DL)/$(LIBSOVER)* $(DL)/$(LIBSO)
+ -@$(RM_F) $(DL)/$(LIBSOMAJ)
+ -@$(RM_F) $(DL)/$(OLDSO)
+ -@$(RM_F) $(DL)/$(OLDSOMAJ)
+ -@$(RM_F) $(DL)/$(OLDSOVER)*
+ cp $(LIBSOVER) $(DL)
+ cp $(OLDSOVER) $(DL)
+ chmod 755 $(DL)/$(LIBSOVER)
+ chmod 755 $(DL)/$(OLDSOVER)
+ (cd $(DL); \
+ $(LN_SF) $(OLDSOVER) $(OLDSOMAJ); \
+ $(LN_SF) $(OLDSOMAJ) $(OLDSO); \
+ $(LN_SF) $(LIBSOVER) $(LIBSOMAJ); \
+ $(LN_SF) $(LIBSOMAJ) $(LIBSO))
+ -@if [ ! -d $(DL)/pkgconfig ]; then $(MKDIR_P) $(DL)/pkgconfig; fi
+ -@$(RM_F) $(DL)/pkgconfig/$(LIBNAME).pc
+ -@$(RM_F) $(DL)/pkgconfig/libpng.pc
+ cp libpng.pc $(DL)/pkgconfig/$(LIBNAME).pc
+ chmod 644 $(DL)/pkgconfig/$(LIBNAME).pc
+ (cd $(DL)/pkgconfig; $(LN_SF) $(LIBNAME).pc libpng.pc)
+
+install-man: libpng.3 libpngpf.3 png.5
+ -@if [ ! -d $(DM) ]; then $(MKDIR_P) $(DM); fi
+ -@if [ ! -d $(DM)/man3 ]; then $(MKDIR_P) $(DM)/man3; fi
+ -@$(RM_F) $(DM)/man3/libpng.3
+ -@$(RM_F) $(DM)/man3/libpngpf.3
+ cp libpng.3 $(DM)/man3
+ cp libpngpf.3 $(DM)/man3
+ -@if [ ! -d $(DM)/man5 ]; then $(MKDIR_P) $(DM)/man5; fi
+ -@$(RM_F) $(DM)/man5/png.5
+ cp png.5 $(DM)/man5
+
+install-config: libpng-config
+ -@if [ ! -d $(DB) ]; then $(MKDIR_P) $(DB); fi
+ -@$(RM_F) $(DB)/libpng-config
+ -@$(RM_F) $(DB)/$(LIBNAME)-config
+ cp libpng-config $(DB)/$(LIBNAME)-config
+ chmod 755 $(DB)/$(LIBNAME)-config
+ (cd $(DB); $(LN_SF) $(LIBNAME)-config libpng-config)
+
+install: install-static install-shared install-man install-config
+
+# If you installed in $(DESTDIR), test-installed won't work until you
+# move the library to its final location. Use test-dd to test it
+# before then.
+
+test-dd:
+ echo
+ echo Testing installed dynamic shared library in $(DL).
+ $(CC) -I$(DI) -I$(ZLIBINC) \
+ `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
+ -L$(DL) -L$(ZLIBLIB) -Wl, -rpath,$(DL) -Wl,-rpath,$(ZLIBLIB) \
+ -o pngtestd `$(BINPATH)/$(LIBNAME)-config --ldflags`
+ ./pngtestd pngtest.png
+
+test-installed:
+ $(CC) -I$(ZLIBINC) \
+ `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
+ -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) \
+ -o pngtesti `$(BINPATH)/$(LIBNAME)-config --ldflags`
+ ./pngtesti pngtest.png
+
+clean:
+ $(RM_F) *.o libpng.a libpng.syms pngtest pngout.png libpng-config \
+ $(LIBSO) $(LIBSOMAJ)* pngtest-static pngtesti \
+ $(OLDSOVER) \
+ libpng.pc
+
+DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
+writelock:
+ chmod a-w *.[ch35] $(DOCS) scripts/*
+
+# DO NOT DELETE THIS LINE -- make depend depends on it.
+
+png.o png.pic.o: png.h pngconf.h pngpriv.h
+pngerror.o pngerror.pic.o: png.h pngconf.h pngpriv.h
+pngrio.o pngrio.pic.o: png.h pngconf.h pngpriv.h
+pngwio.o pngwio.pic.o: png.h pngconf.h pngpriv.h
+pngmem.o pngmem.pic.o: png.h pngconf.h pngpriv.h
+pngset.o pngset.pic.o: png.h pngconf.h pngpriv.h
+pngget.o pngget.pic.o: png.h pngconf.h pngpriv.h
+pngread.o pngread.pic.o: png.h pngconf.h pngpriv.h
+pngrtran.o pngrtran.pic.o: png.h pngconf.h pngpriv.h
+pngrutil.o pngrutil.pic.o: png.h pngconf.h pngpriv.h
+pngtrans.o pngtrans.pic.o: png.h pngconf.h pngpriv.h
+pngwrite.o pngwrite.pic.o: png.h pngconf.h pngpriv.h
+pngwtran.o pngwtran.pic.o: png.h pngconf.h pngpriv.h
+pngwutil.o pngwutil.pic.o: png.h pngconf.h pngpriv.h
+pngpread.o pngpread.pic.o: png.h pngconf.h pngpriv.h
+
+pngtest.o: png.h pngconf.h
diff --git a/src/3rdparty/libpng/scripts/makefile.freebsd b/src/3rdparty/libpng/scripts/makefile.freebsd
new file mode 100644
index 0000000..c0014af
--- /dev/null
+++ b/src/3rdparty/libpng/scripts/makefile.freebsd
@@ -0,0 +1,48 @@
+# makefile for libpng under FreeBSD
+# Copyright (C) 2002, 2007, 2009 Glenn Randers-Pehrson and Andrey A. Chernov
+#
+# This code is released under the libpng license.
+# For conditions of distribution and use, see the disclaimer
+# and license in png.h
+
+PREFIX?= /usr/local
+SHLIB_VER?= 14
+
+LIB= png
+SHLIB_MAJOR= ${SHLIB_VER}
+SHLIB_MINOR= 0
+NOPROFILE= YES
+NOOBJ= YES
+
+# where make install puts libpng.a and png.h
+DESTDIR= ${PREFIX}
+LIBDIR= /lib
+INCS= png.h pngconf.h pngpriv.h
+INCSDIR= /include/libpng
+INCDIR= ${INCSDIR} # for 4.x bsd.lib.mk
+MAN= libpng.3 libpngpf.3 png.5
+MANDIR= /man/man
+SYMLINKS= libpng/png.h ${INCSDIR}/../png.h \
+ libpng/pngconf.h ${INCSDIR}/../pngconf.h
+LDADD+= -lm -lz
+DPADD+= ${LIBM} ${LIBZ}
+
+CFLAGS+= -I.
+
+SRCS= png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \
+ pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
+ pngwtran.c pngmem.c pngerror.c pngpread.c
+
+pngtest: pngtest.o libpng.a
+ ${CC} ${CFLAGS} -L. -static -o pngtest pngtest.o -lpng -lz -lm
+
+CLEANFILES= pngtest pngtest.o pngout.png
+
+test: pngtest
+ ./pngtest
+
+DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
+writelock:
+ chmod a-w *.[ch35] $(DOCS) scripts/*
+
+.include <bsd.lib.mk>
diff --git a/src/3rdparty/libpng/scripts/makefile.gcc b/src/3rdparty/libpng/scripts/makefile.gcc
new file mode 100644
index 0000000..b31adee
--- /dev/null
+++ b/src/3rdparty/libpng/scripts/makefile.gcc
@@ -0,0 +1,83 @@
+# makefile for libpng using gcc (generic, static library)
+# Copyright (C) 2008 Glenn Randers-Pehrson
+# Copyright (C) 2000 Cosmin Truta
+# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
+#
+# This code is released under the libpng license.
+# For conditions of distribution and use, see the disclaimer
+# and license in png.h
+
+# Location of the zlib library and include files
+ZLIBINC = ../zlib
+ZLIBLIB = ../zlib
+
+# Compiler, linker, lib and other tools
+CC = gcc
+LD = $(CC)
+AR_RC = ar rcs
+RANLIB = ranlib
+RM_F = rm -f
+
+CDEBUG = -g -DPNG_DEBUG=5
+LDDEBUG =
+CRELEASE = -O2
+LDRELEASE = -s
+#CFLAGS = -W -Wall $(CDEBUG)
+CFLAGS = -W -Wall $(CRELEASE)
+#LDFLAGS = $(LDDEBUG)
+LDFLAGS = $(LDRELEASE)
+LIBS = -lz -lm
+
+# File extensions
+O=.o
+A=.a
+EXE=
+
+# Variables
+OBJS = png$(O) pngerror$(O) pngget$(O) pngmem$(O) pngpread$(O) \
+ pngread$(O) pngrio$(O) pngrtran$(O) pngrutil$(O) pngset$(O) \
+ pngtrans$(O) pngwio$(O) pngwrite$(O) pngwtran$(O) pngwutil$(O)
+
+# Targets
+all: static
+
+.c$(O):
+ $(CC) -c $(CFLAGS) -I$(ZLIBINC) $<
+
+static: libpng$(A) pngtest$(EXE)
+
+shared:
+ @echo This is a generic makefile that cannot create shared libraries.
+ @echo Please use a configuration that is specific to your platform.
+ @false
+
+libpng$(A): $(OBJS)
+ $(AR_RC) $@ $(OBJS)
+ $(RANLIB) $@
+
+test: pngtest$(EXE)
+ ./pngtest$(EXE)
+
+pngtest$(EXE): pngtest$(O) libpng$(A)
+ $(LD) $(LDFLAGS) -L$(ZLIBLIB) -o $@ pngtest$(O) libpng$(A) $(LIBS)
+
+clean:
+ $(RM_F) *$(O) libpng$(A) pngtest$(EXE) pngout.png
+
+png$(O): png.h pngconf.h pngpriv.h
+pngerror$(O): png.h pngconf.h pngpriv.h
+pngget$(O): png.h pngconf.h pngpriv.h
+pngmem$(O): png.h pngconf.h pngpriv.h
+pngpread$(O): png.h pngconf.h pngpriv.h
+pngread$(O): png.h pngconf.h pngpriv.h
+pngrio$(O): png.h pngconf.h pngpriv.h
+pngrtran$(O): png.h pngconf.h pngpriv.h
+pngrutil$(O): png.h pngconf.h pngpriv.h
+pngset$(O): png.h pngconf.h pngpriv.h
+pngtrans$(O): png.h pngconf.h pngpriv.h
+pngwio$(O): png.h pngconf.h pngpriv.h
+pngwrite$(O): png.h pngconf.h pngpriv.h
+pngwtran$(O): png.h pngconf.h pngpriv.h
+pngwutil$(O): png.h pngconf.h pngpriv.h
+
+pngtest$(O): png.h pngconf.h
diff --git a/src/3rdparty/libpng/scripts/makefile.hp64 b/src/3rdparty/libpng/scripts/makefile.hp64
new file mode 100644
index 0000000..300421a
--- /dev/null
+++ b/src/3rdparty/libpng/scripts/makefile.hp64
@@ -0,0 +1,239 @@
+# makefile for libpng, HPUX (10.20 and 11.00) using the ANSI/C product.
+# Copyright (C) 1999-2002, 2006, 2009 Glenn Randers-Pehrson
+# Copyright (C) 1995 Guy Eric Schalnat, Group 42
+# contributed by Jim Rice and updated by Chris Schleicher, Hewlett Packard
+#
+# This code is released under the libpng license.
+# For conditions of distribution and use, see the disclaimer
+# and license in png.h
+
+# Where the zlib library and include files are located
+ZLIBLIB=/opt/zlib/lib
+ZLIBINC=/opt/zlib/include
+
+# Note that if you plan to build a libpng shared library, zlib must also
+# be a shared library, which zlib's configure does not do. After running
+# zlib's configure, edit the appropriate lines of makefile to read:
+# CFLAGS=-O1 -DHAVE_UNISTD -DUSE_MAP -fPIC \
+# LDSHARED=ld -b
+# SHAREDLIB=libz.sl
+
+# Library name:
+LIBNAME = libpng14
+PNGMAJ = 14
+PNGMIN = 1.4.0
+PNGVER = $(PNGMAJ).$(PNGMIN)
+
+# Shared library names:
+LIBSO=$(LIBNAME).sl
+LIBSOMAJ=$(LIBNAME).sl.$(PNGMAJ)
+LIBSOVER=$(LIBNAME).sl.$(PNGVER)
+OLDSO=libpng.sl
+OLDSOMAJ=libpng.sl.14
+OLDSOVER=libpng.sl.14.$(PNGMIN)
+
+# Utilities:
+AR_RC=ar rc
+CC=cc
+MKDIR_P=mkdir -p
+LN_SF=ln -sf
+RANLIB=ranlib
+RM_F=/bin/rm -f
+
+CFLAGS=-I$(ZLIBINC) -O -Ae -Wl,+vnocompatwarnings +DD64 \
+-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 +Z -DHAVE_UNISTD_H -DUSE_MMAP
+# Caution: be sure you have built zlib with the same CFLAGS.
+CCFLAGS=-I$(ZLIBINC) -O -Ae -Wl,+vnocompatwarnings +DD64 \
+-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 +Z -DHAVE_UNISTD_H -DUSE_MMAP
+
+LDFLAGS=-L. -L$(ZLIBLIB) -lpng -lz -lm
+
+# where make install puts libpng.a, libpng14.sl, and png.h
+prefix=/opt/libpng
+exec_prefix=$(prefix)
+INCPATH=$(prefix)/include
+LIBPATH=$(exec_prefix)/lib
+MANPATH=$(prefix)/man
+BINPATH=$(exec_prefix)/bin
+
+# override DESTDIR= on the make install command line to easily support
+# installing into a temporary location. Example:
+#
+# make install DESTDIR=/tmp/build/libpng
+#
+# If you're going to install into a temporary location
+# via DESTDIR, $(DESTDIR)$(prefix) must already exist before
+# you execute make install.
+DESTDIR=
+
+DB=$(DESTDIR)$(BINPATH)
+DI=$(DESTDIR)$(INCPATH)
+DL=$(DESTDIR)$(LIBPATH)
+DM=$(DESTDIR)$(MANPATH)
+
+OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
+ pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
+ pngwtran.o pngmem.o pngerror.o pngpread.o
+
+OBJSDLL = $(OBJS:.o=.pic.o)
+
+.SUFFIXES: .c .o .pic.o
+
+.c.pic.o:
+ $(CC) -c $(CFLAGS) +z -o $@ $*.c
+
+all: libpng.a $(LIBSO) pngtest libpng.pc libpng-config
+
+libpng.a: $(OBJS)
+ $(AR_RC) $@ $(OBJS)
+ $(RANLIB) $@
+
+libpng.pc:
+ cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
+ -e s!@exec_prefix@!$(exec_prefix)! \
+ -e s!@libdir@!$(LIBPATH)! \
+ -e s!@includedir@!$(INCPATH)! \
+ -e s!-lpng14!-lpng14\ -lz\ -lm! > libpng.pc
+
+libpng-config:
+ ( cat scripts/libpng-config-head.in; \
+ echo prefix=\"$(prefix)\"; \
+ echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
+ echo ccopts=\"-Ae +DA1.1 +DS2.0\"; \
+ echo L_opts=\"-L$(LIBPATH)\"; \
+ echo libs=\"-lpng14 -lz -lm\"; \
+ cat scripts/libpng-config-body.in ) > libpng-config
+ chmod +x libpng-config
+
+$(LIBSO): $(LIBSOMAJ)
+ $(LN_SF) $(LIBSOMAJ) $(LIBSO)
+
+$(LIBSOMAJ): $(LIBSOVER)
+ $(LN_SF) $(LIBSOVER) $(LIBSOMAJ)
+
+$(LIBSOVER): $(OBJSDLL)
+ $(LD) -b +s \
+ +h $(LIBSOMAJ) -o $(LIBSOVER) $(OBJSDLL)
+
+$(OLDSOVER): $(OBJSDLL)
+ $(LD) -b +s \
+ +h $(OLDSOMAJ) -o $(OLDSOVER) $(OBJSDLL)
+
+pngtest: pngtest.o libpng.a
+ $(CC) -o pngtest $(CCFLAGS) pngtest.o $(LDFLAGS)
+
+test: pngtest
+ ./pngtest
+
+install-headers: png.h pngconf.h
+ -@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
+ -@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
+ cp png.h pngconf.h $(DI)/$(LIBNAME)
+ chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h
+ -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h
+ -@$(RM_F) $(DI)/libpng
+ (cd $(DI); $(LN_SF) $(LIBNAME) libpng; $(LN_SF) $(LIBNAME)/* .)
+
+install-static: install-headers libpng.a
+ -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
+ cp libpng.a $(DL)/$(LIBNAME).a
+ chmod 644 $(DL)/$(LIBNAME).a
+ -@$(RM_F) $(DL)/libpng.a
+ (cd $(DL); $(LN_SF) $(LIBNAME).a libpng.a)
+
+install-shared: install-headers $(LIBSOVER) libpng.pc \
+ $(OLDSOVER)
+ -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
+ -@$(RM_F) $(DL)/$(LIBSOVER)* $(DL)/$(LIBSO)
+ -@$(RM_F) $(DL)/$(LIBSOMAJ)
+ -@$(RM_F) $(DL)/$(OLDSO)
+ -@$(RM_F) $(DL)/$(OLDSOMAJ)
+ -@$(RM_F) $(DL)/$(OLDSOVER)*
+ cp $(LIBSOVER) $(DL)
+ cp $(OLDSOVER) $(DL)
+ chmod 755 $(DL)/$(LIBSOVER)
+ chmod 755 $(DL)/$(OLDSOVER)
+ (cd $(DL); \
+ $(LN_SF) $(OLDSOVER) $(OLDSOMAJ); \
+ $(LN_SF) $(OLDSOMAJ) $(OLDSO); \
+ $(LN_SF) $(LIBSOVER) $(LIBSOMAJ); \
+ $(LN_SF) $(LIBSOMAJ) $(LIBSO))
+ -@if [ ! -d $(DL)/pkgconfig ]; then $(MKDIR_P) $(DL)/pkgconfig; fi
+ -@$(RM_F) $(DL)/pkgconfig/$(LIBNAME).pc
+ -@$(RM_F) $(DL)/pkgconfig/libpng.pc
+ cp libpng.pc $(DL)/pkgconfig/$(LIBNAME).pc
+ chmod 644 $(DL)/pkgconfig/$(LIBNAME).pc
+ (cd $(DL)/pkgconfig; $(LN_SF) $(LIBNAME).pc libpng.pc)
+
+install-man: libpng.3 libpngpf.3 png.5
+ -@if [ ! -d $(DM) ]; then $(MKDIR_P) $(DM); fi
+ -@if [ ! -d $(DM)/man3 ]; then $(MKDIR_P) $(DM)/man3; fi
+ -@$(RM_F) $(DM)/man3/libpng.3
+ -@$(RM_F) $(DM)/man3/libpngpf.3
+ cp libpng.3 $(DM)/man3
+ cp libpngpf.3 $(DM)/man3
+ -@if [ ! -d $(DM)/man5 ]; then $(MKDIR_P) $(DM)/man5; fi
+ -@$(RM_F) $(DM)/man5/png.5
+ cp png.5 $(DM)/man5
+
+install-config: libpng-config
+ -@if [ ! -d $(DB) ]; then $(MKDIR_P) $(DB); fi
+ -@$(RM_F) $(DB)/libpng-config
+ -@$(RM_F) $(DB)/$(LIBNAME)-config
+ cp libpng-config $(DB)/$(LIBNAME)-config
+ chmod 755 $(DB)/$(LIBNAME)-config
+ (cd $(DB); $(LN_SF) $(LIBNAME)-config libpng-config)
+
+install: install-static install-shared install-man install-config
+
+# If you installed in $(DESTDIR), test-installed won't work until you
+# move the library to its final location. Use test-dd to test it
+# before then.
+
+test-dd:
+ echo
+ echo Testing installed dynamic shared library in $(DL).
+ $(CC) -I$(DI) -I$(ZLIBINC) $(CCFLAGS) \
+ `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
+ -L$(DL) -L$(ZLIBLIB) \
+ -o pngtestd `$(BINPATH)/$(LIBNAME)-config --ldflags`
+ ./pngtestd pngtest.png
+
+test-installed:
+ echo
+ echo Testing installed dynamic shared library.
+ $(CC) $(CCFLAGS) \
+ `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
+ -L$(ZLIBLIB) \
+ -o pngtesti `$(BINPATH)/$(LIBNAME)-config --ldflags`
+ ./pngtesti pngtest.png
+
+clean:
+ $(RM_F) *.o libpng.a pngtest pngtesti pngout.png \
+ libpng-config $(LIBSO) $(LIBSOMAJ)* \
+ $(OLDSOVER) \
+ libpng.pc
+
+DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
+writelock:
+ chmod a-w *.[ch35] $(DOCS) scripts/*
+
+# DO NOT DELETE THIS LINE -- make depend depends on it.
+
+png.o: png.h pngconf.h pngpriv.h
+pngerror.o: png.h pngconf.h pngpriv.h
+pngrio.o: png.h pngconf.h pngpriv.h
+pngwio.o: png.h pngconf.h pngpriv.h
+pngmem.o: png.h pngconf.h pngpriv.h
+pngset.o: png.h pngconf.h pngpriv.h
+pngget.o: png.h pngconf.h pngpriv.h
+pngread.o: png.h pngconf.h pngpriv.h
+pngrtran.o: png.h pngconf.h pngpriv.h
+pngrutil.o: png.h pngconf.h pngpriv.h
+pngtrans.o: png.h pngconf.h pngpriv.h
+pngwrite.o: png.h pngconf.h pngpriv.h
+pngwtran.o: png.h pngconf.h pngpriv.h
+pngwutil.o: png.h pngconf.h pngpriv.h
+pngpread.o: png.h pngconf.h pngpriv.h
+
+pngtest.o: png.h pngconf.h
diff --git a/src/3rdparty/libpng/scripts/makefile.hpgcc b/src/3rdparty/libpng/scripts/makefile.hpgcc
new file mode 100644
index 0000000..5a147e6
--- /dev/null
+++ b/src/3rdparty/libpng/scripts/makefile.hpgcc
@@ -0,0 +1,248 @@
+# makefile for libpng on HP-UX using GCC with the HP ANSI/C linker.
+# Copyright (C) 2002, 2006-2008 Glenn Randers-Pehrson
+# Copyright (C) 2001, Laurent faillie
+# Copyright (C) 1998, 1999 Greg Roelofs
+# Copyright (C) 1996, 1997 Andreas Dilger
+#
+# This code is released under the libpng license.
+# For conditions of distribution and use, see the disclaimer
+# and license in png.h
+
+# Library name:
+LIBNAME = libpng14
+PNGMAJ = 14
+PNGMIN = 1.4.0
+PNGVER = $(PNGMAJ).$(PNGMIN)
+
+# Shared library names:
+LIBSO=$(LIBNAME).sl
+LIBSOMAJ=$(LIBNAME).sl.$(PNGMAJ)
+LIBSOVER=$(LIBNAME).sl.$(PNGVER)
+OLDSO=libpng.sl
+OLDSOMAJ=libpng.sl.14
+OLDSOVER=libpng.sl.14.$(PNGMIN)
+
+# Utilities:
+CC=gcc
+LD=ld
+AR_RC=ar rc
+MKDIR_P=mkdir -p
+LN_SF=ln -sf
+RANLIB=ranlib
+RM_F=/bin/rm -f
+
+# where "make install" puts libpng.a, $(OLDSO)*, png.h and pngconf.h
+prefix=/usr/local
+exec_prefix=$(prefix)
+
+# Where the zlib library and include files are located
+ZLIBLIB=/opt/zlib/lib
+ZLIBINC=/opt/zlib/include
+
+# Note that if you plan to build a libpng shared library, zlib must also
+# be a shared library, which zlib's configure does not do. After running
+# zlib's configure, edit the appropriate lines of makefile to read:
+# CFLAGS=-O1 -DHAVE_UNISTD -DUSE_MAP -fPIC \
+# LDSHARED=ld -b
+# SHAREDLIB=libz.sl
+
+ALIGN=
+# for i386:
+#ALIGN=-malign-loops=2 -malign-functions=2
+
+WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
+ -Wmissing-declarations -Wtraditional -Wcast-align \
+ -Wstrict-prototypes -Wmissing-prototypes #-Wconversion
+
+# for pgcc version 2.95.1, -O3 is buggy; don't use it.
+
+CFLAGS=-I$(ZLIBINC) -W -Wall -O3 -funroll-loops -DPNG_NO_MMX_CODE \
+ $(ALIGN) # $(WARNMORE) -g -DPNG_DEBUG=5
+#LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng14 -lz -lm
+LDFLAGS=-L. -L$(ZLIBLIB) -lpng14 -lz -lm
+
+INCPATH=$(prefix)/include
+LIBPATH=$(exec_prefix)/lib
+MANPATH=$(prefix)/man
+BINPATH=$(exec_prefix)/bin
+
+# override DESTDIR= on the make install command line to easily support
+# installing into a temporary location. Example:
+#
+# make install DESTDIR=/tmp/build/libpng
+#
+# If you're going to install into a temporary location
+# via DESTDIR, $(DESTDIR)$(prefix) must already exist before
+# you execute make install.
+DESTDIR=
+
+DB=$(DESTDIR)$(BINPATH)
+DI=$(DESTDIR)$(INCPATH)
+DL=$(DESTDIR)$(LIBPATH)
+DM=$(DESTDIR)$(MANPATH)
+
+OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
+ pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
+ pngwtran.o pngmem.o pngerror.o pngpread.o
+
+OBJSDLL = $(OBJS:.o=.pic.o)
+
+.SUFFIXES: .c .o .pic.o
+
+.c.pic.o:
+ $(CC) -c $(CFLAGS) -fPIC -o $@ $*.c
+
+all: libpng.a $(LIBSO) pngtest libpng.pc libpng-config
+
+libpng.a: $(OBJS)
+ $(AR_RC) $@ $(OBJS)
+ $(RANLIB) $@
+
+libpng.pc:
+ cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
+ -e s!@exec_prefix@!$(exec_prefix)! \
+ -e s!@libdir@!$(LIBPATH)! \
+ -e s!@includedir@!$(INCPATH)! \
+ -e s!-lpng14!-lpng14\ -lz\ -lm! > libpng.pc
+
+libpng-config:
+ ( cat scripts/libpng-config-head.in; \
+ echo prefix=\"$(prefix)\"; \
+ echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
+ echo libs=\"-lpng14 -lz -lm\"; \
+ cat scripts/libpng-config-body.in ) > libpng-config
+ chmod +x libpng-config
+
+$(LIBSO): $(LIBSOMAJ)
+ $(LN_SF) $(LIBSOMAJ) $(LIBSO)
+
+$(LIBSOMAJ): $(LIBSOVER)
+ $(LN_SF) $(LIBSOVER) $(LIBSOMAJ)
+
+$(LIBSOVER): $(OBJSDLL)
+ $(LD) -b +s \
+ +h $(LIBSOMAJ) -o $(LIBSOVER) $(OBJSDLL)
+
+$(OLDSOVER): $(OBJSDLL)
+ $(LD) -b +s \
+ +h $(OLDSOMAJ) -o $(OLDSOVER) $(OBJSDLL)
+
+pngtest: pngtest.o $(LIBSO)
+ $(CC) -o pngtest $(CFLAGS) pngtest.o $(LDFLAGS)
+
+test: pngtest
+ ./pngtest
+
+
+install-headers: png.h pngconf.h
+ -@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
+ -@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
+ cp png.h pngconf.h $(DI)/$(LIBNAME)
+ chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h
+ -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h
+ -@$(RM_F) $(DI)/libpng
+ (cd $(DI); $(LN_SF) $(LIBNAME) libpng; $(LN_SF) $(LIBNAME)/* .)
+
+install-static: install-headers libpng.a
+ -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
+ cp libpng.a $(DL)/$(LIBNAME).a
+ chmod 644 $(DL)/$(LIBNAME).a
+ -@$(RM_F) $(DL)/libpng.a
+ (cd $(DL); $(LN_SF) $(LIBNAME).a libpng.a)
+
+install-shared: install-headers $(LIBSOVER) libpng.pc \
+ $(OLDSOVER)
+ -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
+ -@$(RM_F) $(DL)/$(LIBSOVER)* $(DL)/$(LIBSO)
+ -@$(RM_F) $(DL)/$(LIBSOMAJ)
+ -@$(RM_F) $(DL)/$(OLDSO)
+ -@$(RM_F) $(DL)/$(OLDSOMAJ)
+ -@$(RM_F) $(DL)/$(OLDSOVER)*
+ cp $(LIBSOVER) $(DL)
+ cp $(OLDSOVER) $(DL)
+ chmod 755 $(DL)/$(LIBSOVER)
+ chmod 755 $(DL)/$(OLDSOVER)
+ (cd $(DL); \
+ $(LN_SF) $(OLDSOVER) $(OLDSOMAJ); \
+ $(LN_SF) $(OLDSOMAJ) $(OLDSO); \
+ $(LN_SF) $(LIBSOVER) $(LIBSOMAJ); \
+ $(LN_SF) $(LIBSOMAJ) $(LIBSO))
+ -@if [ ! -d $(DL)/pkgconfig ]; then $(MKDIR_P) $(DL)/pkgconfig; fi
+ -@$(RM_F) $(DL)/pkgconfig/$(LIBNAME).pc
+ -@$(RM_F) $(DL)/pkgconfig/libpng.pc
+ cp libpng.pc $(DL)/pkgconfig/$(LIBNAME).pc
+ chmod 644 $(DL)/pkgconfig/$(LIBNAME).pc
+ (cd $(DL)/pkgconfig; $(LN_SF) $(LIBNAME).pc libpng.pc)
+
+install-man: libpng.3 libpngpf.3 png.5
+ -@if [ ! -d $(DM) ]; then $(MKDIR_P) $(DM); fi
+ -@if [ ! -d $(DM)/man3 ]; then $(MKDIR_P) $(DM)/man3; fi
+ -@$(RM_F) $(DM)/man3/libpng.3
+ -@$(RM_F) $(DM)/man3/libpngpf.3
+ cp libpng.3 $(DM)/man3
+ cp libpngpf.3 $(DM)/man3
+ -@if [ ! -d $(DM)/man5 ]; then $(MKDIR_P) $(DM)/man5; fi
+ -@$(RM_F) $(DM)/man5/png.5
+ cp png.5 $(DM)/man5
+
+install-config: libpng-config
+ -@if [ ! -d $(DB) ]; then $(MKDIR_P) $(DB); fi
+ -@$(RM_F) $(DB)/libpng-config
+ -@$(RM_F) $(DB)/$(LIBNAME)-config
+ cp libpng-config $(DB)/$(LIBNAME)-config
+ chmod 755 $(DB)/$(LIBNAME)-config
+ (cd $(DB); $(LN_SF) $(LIBNAME)-config libpng-config)
+
+install: install-static install-shared install-man install-config
+
+# If you installed in $(DESTDIR), test-installed won't work until you
+# move the library to its final location. Use test-dd to test it
+# before then.
+
+test-dd:
+ echo
+ echo Testing installed dynamic shared library in $(DL).
+ $(CC) -I$(DI) -I$(ZLIBINC) \
+ `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
+ -L$(DL) -L$(ZLIBLIB) -Wl,-rpath,$(DL) -Wl,-rpath,$(ZLIBLIB) \
+ -o pngtestd `$(BINPATH)/$(LIBNAME)-config --ldflags`
+ ./pngtestd pngtest.png
+
+test-installed:
+ echo
+ echo Testing installed dynamic shared library.
+ $(CC) -I$(ZLIBINC) \
+ `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
+ -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) \
+ -o pngtesti `$(BINPATH)/$(LIBNAME)-config --ldflags`
+ ./pngtesti pngtest.png
+
+clean:
+ $(RM_F) *.o libpng.a pngtest pngtesti pngout.png \
+ libpng-config $(LIBSO) $(LIBSOMAJ)* \
+ $(OLDSOVER) \
+ libpng.pc
+
+DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
+writelock:
+ chmod a-w *.[ch35] $(DOCS) scripts/*
+
+# DO NOT DELETE THIS LINE -- make depend depends on it.
+
+png.o png.pic.o: png.h pngconf.h pngpriv.h
+pngerror.o pngerror.pic.o: png.h pngconf.h pngpriv.h
+pngrio.o pngrio.pic.o: png.h pngconf.h pngpriv.h
+pngwio.o pngwio.pic.o: png.h pngconf.h pngpriv.h
+pngmem.o pngmem.pic.o: png.h pngconf.h pngpriv.h
+pngset.o pngset.pic.o: png.h pngconf.h pngpriv.h
+pngget.o pngget.pic.o: png.h pngconf.h pngpriv.h
+pngread.o pngread.pic.o: png.h pngconf.h pngpriv.h
+pngrtran.o pngrtran.pic.o: png.h pngconf.h pngpriv.h
+pngrutil.o pngrutil.pic.o: png.h pngconf.h pngpriv.h
+pngtrans.o pngtrans.pic.o: png.h pngconf.h pngpriv.h
+pngwrite.o pngwrite.pic.o: png.h pngconf.h pngpriv.h
+pngwtran.o pngwtran.pic.o: png.h pngconf.h pngpriv.h
+pngwutil.o pngwutil.pic.o: png.h pngconf.h pngpriv.h
+pngpread.o pngpread.pic.o: png.h pngconf.h pngpriv.h
+
+pngtest.o: png.h pngconf.h
diff --git a/src/3rdparty/libpng/scripts/makefile.hpux b/src/3rdparty/libpng/scripts/makefile.hpux
new file mode 100644
index 0000000..4966fa9
--- /dev/null
+++ b/src/3rdparty/libpng/scripts/makefile.hpux
@@ -0,0 +1,236 @@
+# makefile for libpng, HPUX (10.20 and 11.00) using the ANSI/C product.
+# Copyright (C) 1999-2002, 2006 Glenn Randers-Pehrson
+# Copyright (C) 1995 Guy Eric Schalnat, Group 42
+# contributed by Jim Rice and updated by Chris Schleicher, Hewlett Packard
+#
+# This code is released under the libpng license.
+# For conditions of distribution and use, see the disclaimer
+# and license in png.h
+
+# Where the zlib library and include files are located
+ZLIBLIB=/opt/zlib/lib
+ZLIBINC=/opt/zlib/include
+
+# Note that if you plan to build a libpng shared library, zlib must also
+# be a shared library, which zlib's configure does not do. After running
+# zlib's configure, edit the appropriate lines of makefile to read:
+# CFLAGS=-O1 -DHAVE_UNISTD -DUSE_MAP -fPIC \
+# LDSHARED=ld -b
+# SHAREDLIB=libz.sl
+
+# Library name:
+LIBNAME = libpng14
+PNGMAJ = 14
+PNGMIN = 1.4.0
+PNGVER = $(PNGMAJ).$(PNGMIN)
+
+# Shared library names:
+LIBSO=$(LIBNAME).sl
+LIBSOMAJ=$(LIBNAME).sl.$(PNGMAJ)
+LIBSOVER=$(LIBNAME).sl.$(PNGVER)
+OLDSO=libpng.sl
+OLDSOMAJ=libpng.sl.14
+OLDSOVER=libpng.sl.14.$(PNGMIN)
+
+# Utilities:
+AR_RC=ar rc
+CC=cc
+MKDIR_P=mkdir -p
+LN_SF=ln -sf
+RANLIB=ranlib
+RM_F=/bin/rm -f
+
+# where make install puts libpng.a, libpng14.sl, and png.h
+prefix=/opt/libpng
+exec_prefix=$(prefix)
+INCPATH=$(prefix)/include
+LIBPATH=$(exec_prefix)/lib
+MANPATH=$(prefix)/man
+BINPATH=$(exec_prefix)/bin
+
+CFLAGS=-I$(ZLIBINC) -O -Ae +DA1.1 +DS2.0
+# Caution: be sure you have built zlib with the same CFLAGS.
+CCFLAGS=-I$(ZLIBINC) -O -Ae +DA1.1 +DS2.0
+LDFLAGS=-L. -L$(ZLIBLIB) -lpng -lz -lm
+
+# override DESTDIR= on the make install command line to easily support
+# installing into a temporary location. Example:
+#
+# make install DESTDIR=/tmp/build/libpng
+#
+# If you're going to install into a temporary location
+# via DESTDIR, $(DESTDIR)$(prefix) must already exist before
+# you execute make install.
+DESTDIR=
+
+DB=$(DESTDIR)$(BINPATH)
+DI=$(DESTDIR)$(INCPATH)
+DL=$(DESTDIR)$(LIBPATH)
+DM=$(DESTDIR)$(MANPATH)
+
+OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
+ pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
+ pngwtran.o pngmem.o pngerror.o pngpread.o
+
+OBJSDLL = $(OBJS:.o=.pic.o)
+
+.SUFFIXES: .c .o .pic.o
+
+.c.pic.o:
+ $(CC) -c $(CFLAGS) +z -o $@ $*.c
+
+all: libpng.a $(LIBSO) pngtest libpng.pc libpng-config
+
+libpng.a: $(OBJS)
+ $(AR_RC) $@ $(OBJS)
+ $(RANLIB) $@
+
+libpng.pc:
+ cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
+ -e s!@exec_prefix@!$(exec_prefix)! \
+ -e s!@libdir@!$(LIBPATH)! \
+ -e s!@includedir@!$(INCPATH)! \
+ -e s!-lpng14!-lpng14\ -lz\ -lm! > libpng.pc
+
+libpng-config:
+ ( cat scripts/libpng-config-head.in; \
+ echo prefix=\"$(prefix)\"; \
+ echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
+ echo ccopts=\"-Ae +DA1.1 +DS2.0\"; \
+ echo L_opts=\"-L$(LIBPATH)\"; \
+ echo libs=\"-lpng14 -lz -lm\"; \
+ cat scripts/libpng-config-body.in ) > libpng-config
+ chmod +x libpng-config
+
+$(LIBSO): $(LIBSOMAJ)
+ $(LN_SF) $(LIBSOMAJ) $(LIBSO)
+
+$(LIBSOMAJ): $(LIBSOVER)
+ $(LN_SF) $(LIBSOVER) $(LIBSOMAJ)
+
+$(LIBSOVER): $(OBJSDLL)
+ $(LD) -b +s \
+ +h $(LIBSOMAJ) -o $(LIBSOVER) $(OBJSDLL)
+
+$(OLDSOVER): $(OBJSDLL)
+ $(LD) -b +s \
+ +h $(OLDSOMAJ) -o $(OLDSOVER) $(OBJSDLL)
+
+pngtest: pngtest.o libpng.a
+ $(CC) -o pngtest $(CCFLAGS) pngtest.o $(LDFLAGS)
+
+test: pngtest
+ ./pngtest
+
+install-headers: png.h pngconf.h
+ -@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
+ -@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
+ cp png.h pngconf.h $(DI)/$(LIBNAME)
+ chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h
+ -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h
+ -@$(RM_F) $(DI)/libpng
+ (cd $(DI); $(LN_SF) $(LIBNAME) libpng; $(LN_SF) $(LIBNAME)/* .)
+
+install-static: install-headers libpng.a
+ -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
+ cp libpng.a $(DL)/$(LIBNAME).a
+ chmod 644 $(DL)/$(LIBNAME).a
+ -@$(RM_F) $(DL)/libpng.a
+ (cd $(DL); $(LN_SF) $(LIBNAME).a libpng.a)
+
+install-shared: install-headers $(LIBSOVER) libpng.pc \
+ $(OLDSOVER)
+ -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
+ -@$(RM_F) $(DL)/$(LIBSOVER)* $(DL)/$(LIBSO)
+ -@$(RM_F) $(DL)/$(LIBSOMAJ)
+ -@$(RM_F) $(DL)/$(OLDSO)
+ -@$(RM_F) $(DL)/$(OLDSOMAJ)
+ -@$(RM_F) $(DL)/$(OLDSOVER)*
+ cp $(LIBSOVER) $(DL)
+ cp $(OLDSOVER) $(DL)
+ chmod 755 $(DL)/$(LIBSOVER)
+ chmod 755 $(DL)/$(OLDSOVER)
+ (cd $(DL); \
+ $(LN_SF) $(OLDSOVER) $(OLDSOMAJ); \
+ $(LN_SF) $(OLDSOMAJ) $(OLDSO); \
+ $(LN_SF) $(LIBSOVER) $(LIBSOMAJ); \
+ $(LN_SF) $(LIBSOMAJ) $(LIBSO))
+ -@if [ ! -d $(DL)/pkgconfig ]; then $(MKDIR_P) $(DL)/pkgconfig; fi
+ -@$(RM_F) $(DL)/pkgconfig/$(LIBNAME).pc
+ -@$(RM_F) $(DL)/pkgconfig/libpng.pc
+ cp libpng.pc $(DL)/pkgconfig/$(LIBNAME).pc
+ chmod 644 $(DL)/pkgconfig/$(LIBNAME).pc
+ (cd $(DL)/pkgconfig; $(LN_SF) $(LIBNAME).pc libpng.pc)
+
+install-man: libpng.3 libpngpf.3 png.5
+ -@if [ ! -d $(DM) ]; then $(MKDIR_P) $(DM); fi
+ -@if [ ! -d $(DM)/man3 ]; then $(MKDIR_P) $(DM)/man3; fi
+ -@$(RM_F) $(DM)/man3/libpng.3
+ -@$(RM_F) $(DM)/man3/libpngpf.3
+ cp libpng.3 $(DM)/man3
+ cp libpngpf.3 $(DM)/man3
+ -@if [ ! -d $(DM)/man5 ]; then $(MKDIR_P) $(DM)/man5; fi
+ -@$(RM_F) $(DM)/man5/png.5
+ cp png.5 $(DM)/man5
+
+install-config: libpng-config
+ -@if [ ! -d $(DB) ]; then $(MKDIR_P) $(DB); fi
+ -@$(RM_F) $(DB)/libpng-config
+ -@$(RM_F) $(DB)/$(LIBNAME)-config
+ cp libpng-config $(DB)/$(LIBNAME)-config
+ chmod 755 $(DB)/$(LIBNAME)-config
+ (cd $(DB); $(LN_SF) $(LIBNAME)-config libpng-config)
+
+install: install-static install-shared install-man install-config
+
+# If you installed in $(DESTDIR), test-installed won't work until you
+# move the library to its final location. Use test-dd to test it
+# before then.
+
+test-dd:
+ echo
+ echo Testing installed dynamic shared library in $(DL).
+ $(CC) -I$(DI) -I$(ZLIBINC) $(CCFLAGS) \
+ `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
+ -L$(DL) -L$(ZLIBLIB) \
+ -o pngtestd `$(BINPATH)/$(LIBNAME)-config --ldflags`
+ ./pngtestd pngtest.png
+
+test-installed:
+ echo
+ echo Testing installed dynamic shared library.
+ $(CC) $(CCFLAGS) \
+ `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
+ -L$(ZLIBLIB) \
+ -o pngtesti `$(BINPATH)/$(LIBNAME)-config --ldflags`
+ ./pngtesti pngtest.png
+
+clean:
+ $(RM_F) *.o libpng.a pngtest pngtesti pngout.png \
+ libpng-config $(LIBSO) $(LIBSOMAJ)* \
+ $(OLDSOVER) \
+ libpng.pc
+
+DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
+writelock:
+ chmod a-w *.[ch35] $(DOCS) scripts/*
+
+# DO NOT DELETE THIS LINE -- make depend depends on it.
+
+png.o: png.h pngconf.h pngpriv.h
+pngerror.o: png.h pngconf.h pngpriv.h
+pngrio.o: png.h pngconf.h pngpriv.h
+pngwio.o: png.h pngconf.h pngpriv.h
+pngmem.o: png.h pngconf.h pngpriv.h
+pngset.o: png.h pngconf.h pngpriv.h
+pngget.o: png.h pngconf.h pngpriv.h
+pngread.o: png.h pngconf.h pngpriv.h
+pngrtran.o: png.h pngconf.h pngpriv.h
+pngrutil.o: png.h pngconf.h pngpriv.h
+pngtrans.o: png.h pngconf.h pngpriv.h
+pngwrite.o: png.h pngconf.h pngpriv.h
+pngwtran.o: png.h pngconf.h pngpriv.h
+pngwutil.o: png.h pngconf.h pngpriv.h
+pngpread.o: png.h pngconf.h pngpriv.h
+
+pngtest.o: png.h pngconf.h
diff --git a/src/3rdparty/libpng/scripts/makefile.ibmc b/src/3rdparty/libpng/scripts/makefile.ibmc
new file mode 100644
index 0000000..b0b445a
--- /dev/null
+++ b/src/3rdparty/libpng/scripts/makefile.ibmc
@@ -0,0 +1,77 @@
+# Makefile for libpng (static)
+# IBM C version 3.x for Win32 and OS/2
+# Copyright (C) 2006 Glenn Randers-Pehrson
+# Copyright (C) 2000 Cosmin Truta
+#
+# This code is released under the libpng license.
+# For conditions of distribution and use, see the disclaimer
+# and license in png.h
+#
+# Notes:
+# Derived from makefile.std
+# All modules are compiled in C mode
+# Tested under Win32, expected to work under OS/2
+# Can be easily adapted for IBM VisualAge/C++ for AIX
+
+# Location of the zlib library and include files
+ZLIBINC = ../zlib
+ZLIBLIB = ../zlib
+
+# Compiler, linker, lib and other tools
+CC = icc
+LD = ilink
+AR = ilib
+RM = del
+
+CFLAGS = -I$(ZLIBINC) -Mc -O2 -W3
+LDFLAGS =
+
+# File extensions
+O=.obj
+A=.lib
+E=.exe
+
+# Variables
+OBJS = png$(O) pngerror$(O) pngget$(O) pngmem$(O) pngpread$(O) \
+ pngread$(O) pngrio$(O) pngrtran$(O) pngrutil$(O) pngset$(O) \
+ pngtrans$(O) pngwio$(O) pngwrite$(O) pngwtran$(O) pngwutil$(O)
+
+LIBS = libpng$(A) $(ZLIBLIB)/zlib$(A)
+
+# Targets
+all: libpng$(A) pngtest$(E)
+
+libpng$(A): $(OBJS)
+ $(AR) -out:$@ $(OBJS)
+
+test: pngtest$(E)
+ pngtest$(E)
+
+pngtest: pngtest$(E)
+
+pngtest$(E): pngtest$(O) libpng$(A)
+ $(LD) $(LDFLAGS) pngtest$(O) $(LIBS)
+
+clean:
+ $(RM) *$(O)
+ $(RM) libpng$(A)
+ $(RM) pngtest$(E)
+ $(RM) pngout.png
+
+png$(O): png.h pngconf.h pngpriv.h
+pngerror$(O): png.h pngconf.h pngpriv.h
+pngget$(O): png.h pngconf.h pngpriv.h
+pngmem$(O): png.h pngconf.h pngpriv.h
+pngpread$(O): png.h pngconf.h pngpriv.h
+pngread$(O): png.h pngconf.h pngpriv.h
+pngrio$(O): png.h pngconf.h pngpriv.h
+pngrtran$(O): png.h pngconf.h pngpriv.h
+pngrutil$(O): png.h pngconf.h pngpriv.h
+pngset$(O): png.h pngconf.h pngpriv.h
+pngtrans$(O): png.h pngconf.h pngpriv.h
+pngwio$(O): png.h pngconf.h pngpriv.h
+pngwrite$(O): png.h pngconf.h pngpriv.h
+pngwtran$(O): png.h pngconf.h pngpriv.h
+pngwutil$(O): png.h pngconf.h pngpriv.h
+
+pngtest$(O): png.h pngconf.h
diff --git a/src/3rdparty/libpng/scripts/makefile.intel b/src/3rdparty/libpng/scripts/makefile.intel
new file mode 100644
index 0000000..fb705e1
--- /dev/null
+++ b/src/3rdparty/libpng/scripts/makefile.intel
@@ -0,0 +1,106 @@
+# Makefile for libpng
+# Microsoft Visual C++ with Intel C/C++ Compiler 4.0 and later
+
+# Copyright (C) 2006 Glenn Randers-Pehrson
+# Copyright (C) 2000, Pawel Mrochen, based on makefile.msc which is
+# copyright 1995 Guy Eric Schalnat, Group 42, Inc.
+#
+# This code is released under the libpng license.
+# For conditions of distribution and use, see the disclaimer
+# and license in png.h
+#
+# To use, do "nmake /f scripts\makefile.intel"
+#
+# ------------------- Intel C/C++ Compiler 4.0 and later -------------------
+
+# Where the zlib library and include files are located
+ZLIBLIB=..\zlib
+ZLIBINC=..\zlib
+
+# Target CPU
+CPU=6 # Pentium II
+#CPU=5 # Pentium
+
+# Calling convention
+CALLING=r # __fastcall
+#CALLING=z # __stdcall
+#CALLING=d # __cdecl
+
+# Uncomment next to put error messages in a file
+#ERRFILE=>>pngerrs
+
+# --------------------------------------------------------------------------
+
+CC=icl -c
+CFLAGS=-O2 -G$(CPU)$(CALLING) -Qip -Qunroll4 -I$(ZLIBINC) -nologo
+LD=link
+LDFLAGS=/SUBSYSTEM:CONSOLE /NOLOGO
+
+O=.obj
+
+OBJS=png$(O) pngset$(O) pngget$(O) pngrutil$(O) pngtrans$(O) pngwutil$(O) \
+pngmem$(O) pngpread$(O) pngread$(O) pngerror$(O) pngwrite$(O) \
+pngrtran$(O) pngwtran$(O) pngrio$(O) pngwio$(O)
+
+all: test
+
+png$(O): png.h pngconf.h pngpriv.h
+ $(CC) $(CFLAGS) $*.c $(ERRFILE)
+
+pngset$(O): png.h pngconf.h pngpriv.h
+ $(CC) $(CFLAGS) $*.c $(ERRFILE)
+
+pngget$(O): png.h pngconf.h pngpriv.h
+ $(CC) $(CFLAGS) $*.c $(ERRFILE)
+
+pngread$(O): png.h pngconf.h pngpriv.h
+ $(CC) $(CFLAGS) $*.c $(ERRFILE)
+
+pngpread$(O): png.h pngconf.h pngpriv.h
+ $(CC) $(CFLAGS) $*.c $(ERRFILE)
+
+pngrtran$(O): png.h pngconf.h pngpriv.h
+ $(CC) $(CFLAGS) $*.c $(ERRFILE)
+
+pngrutil$(O): png.h pngconf.h pngpriv.h
+ $(CC) $(CFLAGS) $*.c $(ERRFILE)
+
+pngerror$(O): png.h pngconf.h pngpriv.h
+ $(CC) $(CFLAGS) $*.c $(ERRFILE)
+
+pngmem$(O): png.h pngconf.h pngpriv.h
+ $(CC) $(CFLAGS) $*.c $(ERRFILE)
+
+pngrio$(O): png.h pngconf.h pngpriv.h
+ $(CC) $(CFLAGS) $*.c $(ERRFILE)
+
+pngwio$(O): png.h pngconf.h pngpriv.h
+ $(CC) $(CFLAGS) $*.c $(ERRFILE)
+
+pngtrans$(O): png.h pngconf.h pngpriv.h
+ $(CC) $(CFLAGS) $*.c $(ERRFILE)
+
+pngwrite$(O): png.h pngconf.h pngpriv.h
+ $(CC) $(CFLAGS) $*.c $(ERRFILE)
+
+pngwtran$(O): png.h pngconf.h pngpriv.h
+ $(CC) $(CFLAGS) $*.c $(ERRFILE)
+
+pngwutil$(O): png.h pngconf.h pngpriv.h
+ $(CC) $(CFLAGS) $*.c $(ERRFILE)
+
+libpng.lib: $(OBJS)
+ if exist libpng.lib del libpng.lib
+ lib /NOLOGO /OUT:libpng.lib $(OBJS)
+
+pngtest.exe: pngtest.obj libpng.lib
+ $(LD) $(LDFLAGS) /OUT:pngtest.exe pngtest.obj libpng.lib $(ZLIBLIB)\zlib.lib
+
+pngtest$(O): png.h pngconf.h
+ $(CC) $(CFLAGS) $*.c $(ERRFILE)
+
+test: pngtest.exe
+ pngtest.exe
+
+
+# End of makefile for libpng
diff --git a/src/3rdparty/libpng/scripts/makefile.knr b/src/3rdparty/libpng/scripts/makefile.knr
new file mode 100644
index 0000000..75cb1b5
--- /dev/null
+++ b/src/3rdparty/libpng/scripts/makefile.knr
@@ -0,0 +1,103 @@
+# makefile for libpng
+# Copyright (C) 2002, 2006, 2009 Glenn Randers-Pehrson
+# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
+#
+# This code is released under the libpng license.
+# For conditions of distribution and use, see the disclaimer
+# and license in png.h
+#
+# This makefile requires the file ansi2knr.c, which you can get
+# from the Ghostscript ftp site at ftp://ftp.cs.wisc.edu/ghost/
+# If you have libjpeg, you probably already have ansi2knr.c in the jpeg
+# source distribution.
+
+# where make install puts libpng.a and png.h
+prefix=/usr/local
+INCPATH=$(prefix)/include
+LIBPATH=$(prefix)/lib
+
+# override DESTDIR= on the make install command line to easily support
+# installing into a temporary location. Example:
+#
+# make install DESTDIR=/tmp/build/libpng
+#
+# If you're going to install into a temporary location
+# via DESTDIR, $(DESTDIR)$(prefix) must already exist before
+# you execute make install.
+DESTDIR=
+
+CC=cc
+CFLAGS=-I../zlib -O
+LDFLAGS=-L. -L../zlib/ -lpng -lz -lm
+# flags for ansi2knr
+ANSI2KNRFLAGS=
+
+RANLIB=ranlib
+#RANLIB=echo
+
+OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
+ pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
+ pngwtran.o pngmem.o pngerror.o pngpread.o
+
+all: ansi2knr libpng.a pngtest
+
+# general rule to allow ansi2knr to work
+.c.o:
+ ./ansi2knr $*.c T$*.c
+ $(CC) $(CFLAGS) -c T$*.c
+ rm -f T$*.c $*.o
+ mv T$*.o $*.o
+
+ansi2knr: ansi2knr.c
+ $(CC) $(CFLAGS) $(ANSI2KNRFLAGS) -o ansi2knr ansi2knr.c
+
+libpng.a: ansi2knr $(OBJS)
+ ar rc $@ $(OBJS)
+ $(RANLIB) $@
+
+pngtest: pngtest.o libpng.a
+ $(CC) -o pngtest $(CFLAGS) pngtest.o $(LDFLAGS)
+
+test: pngtest
+ ./pngtest
+
+install: libpng.a png.h pngconf.h
+ -@mkdir $(DESTDIR)$(INCPATH)
+ -@mkdir $(DESTDIR)$(INCPATH)/libpng
+ -@mkdir $(DESTDIR)$(LIBPATH)
+ -@rm -f $(DESTDIR)$(INCPATH)/png.h
+ -@rm -f $(DESTDIR)$(INCPATH)/pngconf.h
+ cp png.h $(DESTDIR)$(INCPATH)/libpng
+ cp pngconf.h $(DESTDIR)$(INCPATH)/libpng
+ chmod 644 $(DESTDIR)$(INCPATH)/libpng/png.h
+ chmod 644 $(DESTDIR)$(INCPATH)/libpng/pngconf.h
+ (cd $(DESTDIR)$(INCPATH); ln -f -s libpng/* .)
+ cp libpng.a $(DESTDIR)$(LIBPATH)
+ chmod 644 $(DESTDIR)$(LIBPATH)/libpng.a
+
+clean:
+ rm -f *.o libpng.a pngtest pngout.png ansi2knr
+
+DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
+writelock:
+ chmod a-w *.[ch35] $(DOCS) scripts/*
+
+# DO NOT DELETE THIS LINE -- make depend depends on it.
+
+png.o: png.h pngconf.h pngpriv.h
+pngerror.o: png.h pngconf.h pngpriv.h
+pngrio.o: png.h pngconf.h pngpriv.h
+pngwio.o: png.h pngconf.h pngpriv.h
+pngmem.o: png.h pngconf.h pngpriv.h
+pngset.o: png.h pngconf.h pngpriv.h
+pngget.o: png.h pngconf.h pngpriv.h
+pngread.o: png.h pngconf.h pngpriv.h
+pngpread.o: png.h pngconf.h pngpriv.h
+pngrtran.o: png.h pngconf.h pngpriv.h
+pngrutil.o: png.h pngconf.h pngpriv.h
+pngtrans.o: png.h pngconf.h pngpriv.h
+pngwrite.o: png.h pngconf.h pngpriv.h
+pngwtran.o: png.h pngconf.h pngpriv.h
+pngwutil.o: png.h pngconf.h pngpriv.h
+
+pngtest.o: png.h pngconf.h
diff --git a/src/3rdparty/libpng/scripts/makefile.linux b/src/3rdparty/libpng/scripts/makefile.linux
new file mode 100644
index 0000000..8d02d5a
--- /dev/null
+++ b/src/3rdparty/libpng/scripts/makefile.linux
@@ -0,0 +1,253 @@
+# makefile for libpng.a and libpng14.so on Linux ELF with gcc
+# Copyright (C) 1998, 1999, 2002, 2006, 2008 Greg Roelofs and
+# Glenn Randers-Pehrson
+# Copyright (C) 1996, 1997 Andreas Dilger
+#
+# This code is released under the libpng license.
+# For conditions of distribution and use, see the disclaimer
+# and license in png.h
+
+# Library name:
+LIBNAME = libpng14
+PNGMAJ = 14
+PNGMIN = 1.4.0
+PNGVER = $(PNGMAJ).$(PNGMIN)
+
+# Shared library names:
+LIBSO=$(LIBNAME).so
+LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
+LIBSOVER=$(LIBNAME).so.$(PNGVER)
+OLDSO=libpng.so
+OLDSOMAJ=libpng.so.14
+OLDSOVER=libpng.so.14.$(PNGMIN)
+
+# Utilities:
+AR_RC=ar rc
+CC=gcc
+MKDIR_P=mkdir -p
+LN_SF=ln -sf
+RANLIB=ranlib
+RM_F=/bin/rm -f
+
+# where "make install" puts libpng14.a, libpng14.so*,
+# libpng14/png.h and libpng14/pngconf.h
+# Prefix must be a full pathname.
+prefix=/usr/local
+exec_prefix=$(prefix)
+
+# Where the zlib library and include files are located.
+#ZLIBLIB=/usr/local/lib
+#ZLIBINC=/usr/local/include
+ZLIBLIB=../zlib
+ZLIBINC=../zlib
+
+ALIGN=
+# for i386:
+#ALIGN=-malign-loops=2 -malign-functions=2
+
+WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
+ -Wmissing-declarations -Wtraditional -Wcast-align \
+ -Wstrict-prototypes -Wmissing-prototypes #-Wconversion
+
+# for pgcc version 2.95.1, -O3 is buggy; don't use it.
+
+CFLAGS=-I$(ZLIBINC) -W -Wall -O3 -funroll-loops \
+ $(ALIGN) # $(WARNMORE) -g -DPNG_DEBUG=5
+
+LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng14 -lz -lm
+LDFLAGS_A=-L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) libpng.a -lz -lm
+
+INCPATH=$(prefix)/include
+LIBPATH=$(exec_prefix)/lib
+MANPATH=$(prefix)/man
+BINPATH=$(exec_prefix)/bin
+
+# override DESTDIR= on the make install command line to easily support
+# installing into a temporary location. Example:
+#
+# make install DESTDIR=/tmp/build/libpng
+#
+# If you're going to install into a temporary location
+# via DESTDIR, $(DESTDIR)$(prefix) must already exist before
+# you execute make install.
+DESTDIR=
+
+DB=$(DESTDIR)$(BINPATH)
+DI=$(DESTDIR)$(INCPATH)
+DL=$(DESTDIR)$(LIBPATH)
+DM=$(DESTDIR)$(MANPATH)
+
+OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
+ pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
+ pngwtran.o pngmem.o pngerror.o pngpread.o
+
+OBJSDLL = $(OBJS:.o=.pic.o)
+
+.SUFFIXES: .c .o .pic.o
+
+.c.pic.o:
+ $(CC) -c $(CFLAGS) -fPIC -o $@ $*.c
+
+all: libpng.a $(LIBSO) pngtest pngtest-static libpng.pc libpng-config
+
+libpng.a: $(OBJS)
+ $(AR_RC) $@ $(OBJS)
+ $(RANLIB) $@
+
+libpng.pc:
+ cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
+ -e s!@exec_prefix@!$(exec_prefix)! \
+ -e s!@libdir@!$(LIBPATH)! \
+ -e s!@includedir@!$(INCPATH)! \
+ -e s!-lpng14!-lpng14\ -lz\ -lm! > libpng.pc
+
+libpng-config:
+ ( cat scripts/libpng-config-head.in; \
+ echo prefix=\"$(prefix)\"; \
+ echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
+ echo L_opts=\"-L$(LIBPATH)\"; \
+ echo R_opts=\"-Wl,-rpath,$(LIBPATH)\"; \
+ echo libs=\"-lpng14 -lz -lm\"; \
+ cat scripts/libpng-config-body.in ) > libpng-config
+ chmod +x libpng-config
+
+$(LIBSO): $(LIBSOMAJ)
+ $(LN_SF) $(LIBSOMAJ) $(LIBSO)
+
+$(LIBSOMAJ): $(LIBSOVER)
+ $(LN_SF) $(LIBSOVER) $(LIBSOMAJ)
+
+$(LIBSOVER): $(OBJSDLL)
+ $(CC) -shared -Wl,-soname,$(LIBSOMAJ) -o $(LIBSOVER) $(OBJSDLL)
+
+$(OLDSOVER): $(OBJSDLL)
+ $(CC) -shared -Wl,-soname,$(OLDSOMAJ) \
+ -o $(OLDSOVER) \
+ $(OBJSDLL)
+
+pngtest: pngtest.o $(LIBSO)
+ $(CC) -o pngtest $(CFLAGS) pngtest.o $(LDFLAGS)
+
+pngtest-static: pngtest.o libpng.a
+ $(CC) -o pngtest-static $(CFLAGS) pngtest.o $(LDFLAGS_A)
+
+test: pngtest pngtest-static
+ @echo ""
+ @echo " Running pngtest dynamically linked with $(LIBSO):"
+ @echo ""
+ ./pngtest
+ @echo ""
+ @echo " Running pngtest statically linked with libpng.a:"
+ @echo ""
+ ./pngtest-static
+
+install-headers: png.h pngconf.h
+ -@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
+ -@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
+ cp png.h pngconf.h $(DI)/$(LIBNAME)
+ chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h
+ -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h
+ -@$(RM_F) $(DI)/libpng
+ (cd $(DI); $(LN_SF) $(LIBNAME) libpng; $(LN_SF) $(LIBNAME)/* .)
+
+install-static: install-headers libpng.a
+ -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
+ cp libpng.a $(DL)/$(LIBNAME).a
+ chmod 644 $(DL)/$(LIBNAME).a
+ -@$(RM_F) $(DL)/libpng.a
+ (cd $(DL); $(LN_SF) $(LIBNAME).a libpng.a)
+
+install-shared: install-headers $(LIBSOVER) libpng.pc \
+ $(OLDSOVER)
+ -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
+ -@$(RM_F) $(DL)/$(LIBSOVER)* $(DL)/$(LIBSO)
+ -@$(RM_F) $(DL)/$(LIBSOMAJ)
+ -@$(RM_F) $(DL)/$(OLDSO)
+ -@$(RM_F) $(DL)/$(OLDSOMAJ)
+ -@$(RM_F) $(DL)/$(OLDSOVER)*
+ cp $(LIBSOVER) $(DL)
+ cp $(OLDSOVER) $(DL)
+ chmod 755 $(DL)/$(LIBSOVER)
+ chmod 755 $(DL)/$(OLDSOVER)
+ (cd $(DL); \
+ $(LN_SF) $(OLDSOVER) $(OLDSOMAJ); \
+ $(LN_SF) $(OLDSOMAJ) $(OLDSO); \
+ $(LN_SF) $(LIBSOVER) $(LIBSOMAJ); \
+ $(LN_SF) $(LIBSOMAJ) $(LIBSO))
+ -@if [ ! -d $(DL)/pkgconfig ]; then $(MKDIR_P) $(DL)/pkgconfig; fi
+ -@$(RM_F) $(DL)/pkgconfig/$(LIBNAME).pc
+ -@$(RM_F) $(DL)/pkgconfig/libpng.pc
+ cp libpng.pc $(DL)/pkgconfig/$(LIBNAME).pc
+ chmod 644 $(DL)/pkgconfig/$(LIBNAME).pc
+ (cd $(DL)/pkgconfig; $(LN_SF) $(LIBNAME).pc libpng.pc)
+
+install-man: libpng.3 libpngpf.3 png.5
+ -@if [ ! -d $(DM) ]; then $(MKDIR_P) $(DM); fi
+ -@if [ ! -d $(DM)/man3 ]; then $(MKDIR_P) $(DM)/man3; fi
+ -@$(RM_F) $(DM)/man3/libpng.3
+ -@$(RM_F) $(DM)/man3/libpngpf.3
+ cp libpng.3 $(DM)/man3
+ cp libpngpf.3 $(DM)/man3
+ -@if [ ! -d $(DM)/man5 ]; then $(MKDIR_P) $(DM)/man5; fi
+ -@$(RM_F) $(DM)/man5/png.5
+ cp png.5 $(DM)/man5
+
+install-config: libpng-config
+ -@if [ ! -d $(DB) ]; then $(MKDIR_P) $(DB); fi
+ -@$(RM_F) $(DB)/libpng-config
+ -@$(RM_F) $(DB)/$(LIBNAME)-config
+ cp libpng-config $(DB)/$(LIBNAME)-config
+ chmod 755 $(DB)/$(LIBNAME)-config
+ (cd $(DB); $(LN_SF) $(LIBNAME)-config libpng-config)
+
+install: install-static install-shared install-man install-config
+
+# If you installed in $(DESTDIR), test-installed won't work until you
+# move the library to its final location. Use test-dd to test it
+# before then.
+
+test-dd:
+ echo
+ echo Testing installed dynamic shared library in $(DL).
+ $(CC) -I$(DI) -I$(ZLIBINC) \
+ `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
+ -L$(DL) -L$(ZLIBLIB) -Wl, -rpath,$(DL) -Wl,-rpath,$(ZLIBLIB) \
+ -o pngtestd `$(BINPATH)/$(LIBNAME)-config --ldflags`
+ ./pngtestd pngtest.png
+
+test-installed:
+ $(CC) -I$(ZLIBINC) \
+ `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
+ -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) \
+ -o pngtesti `$(BINPATH)/$(LIBNAME)-config --ldflags`
+ ./pngtesti pngtest.png
+
+clean:
+ $(RM_F) *.o libpng.a pngtest pngout.png libpng-config \
+ $(LIBSO) $(LIBSOMAJ)* pngtest-static pngtesti \
+ $(OLDSOVER) \
+ libpng.pc
+
+DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
+writelock:
+ chmod a-w *.[ch35] $(DOCS) scripts/*
+
+# DO NOT DELETE THIS LINE -- make depend depends on it.
+
+png.o png.pic.o: png.h pngconf.h pngpriv.h
+pngerror.o pngerror.pic.o: png.h pngconf.h pngpriv.h
+pngrio.o pngrio.pic.o: png.h pngconf.h pngpriv.h
+pngwio.o pngwio.pic.o: png.h pngconf.h pngpriv.h
+pngmem.o pngmem.pic.o: png.h pngconf.h pngpriv.h
+pngset.o pngset.pic.o: png.h pngconf.h pngpriv.h
+pngget.o pngget.pic.o: png.h pngconf.h pngpriv.h
+pngread.o pngread.pic.o: png.h pngconf.h pngpriv.h
+pngrtran.o pngrtran.pic.o: png.h pngconf.h pngpriv.h
+pngrutil.o pngrutil.pic.o: png.h pngconf.h pngpriv.h
+pngtrans.o pngtrans.pic.o: png.h pngconf.h pngpriv.h
+pngwrite.o pngwrite.pic.o: png.h pngconf.h pngpriv.h
+pngwtran.o pngwtran.pic.o: png.h pngconf.h pngpriv.h
+pngwutil.o pngwutil.pic.o: png.h pngconf.h pngpriv.h
+pngpread.o pngpread.pic.o: png.h pngconf.h pngpriv.h
+
+pngtest.o: png.h pngconf.h
diff --git a/src/3rdparty/libpng/scripts/makefile.mingw b/src/3rdparty/libpng/scripts/makefile.mingw
new file mode 100644
index 0000000..8faad93
--- /dev/null
+++ b/src/3rdparty/libpng/scripts/makefile.mingw
@@ -0,0 +1,280 @@
+# makefile for mingw on x86
+# Builds both dll (with import lib) and static lib versions
+# of the library, and builds two copies of pngtest: one
+# statically linked and one dynamically linked.
+#
+# Copyright (C) 2002, 2006, 2008 Soren Anderson, Charles Wilson,
+# and Glenn Randers-Pehrson, based on makefile for linux-elf w/mmx by:
+# Copyright (C) 1998-2000, 2007 Greg Roelofs
+# Copyright (C) 1996, 1997 Andreas Dilger
+#
+# This code is released under the libpng license.
+# For conditions of distribution and use, see the disclaimer
+# and license in png.h
+
+# Built from makefile.cygwin
+
+# This makefile intends to support building outside the src directory
+# if desired. When invoking it, specify an argument to SRCDIR on the
+# command line that points to the top of the directory where your source
+# is located.
+ifdef SRCDIR
+VPATH = $(SRCDIR)
+else
+SRCDIR = .
+endif
+
+# Override DESTDIR= on the make install command line to easily support
+# installing into a temporary location. Example:
+#
+# make install DESTDIR=/tmp/build/libpng
+#
+# If you're going to install into a temporary location
+# via DESTDIR, $(DESTDIR)$(prefix) must already exist before
+# you execute make install.
+DESTDIR=
+
+# If you're using a cross-compiler, add the appropriate prefix (e.g.,
+# "i386-mingw32msvc-") to the following three commands:
+CC=gcc
+AR=ar
+RANLIB=ranlib
+
+MKDIR_P=/bin/mkdir -pv
+
+# Where "make install" puts libpng*.a, *png*.dll, png.h, and pngconf.h
+ifndef prefix
+prefix=/usr
+$(warning "You haven't specified a 'prefix=' location. Defaulting to '/usr'")
+endif
+exec_prefix=$(prefix)
+
+# Where the zlib library and include files are located
+ZLIBLIB= /usr/lib
+ZLIBINC=
+
+ALIGN=
+# for i386:
+#ALIGN=-malign-loops=2 -malign-functions=2
+
+WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
+ -Wmissing-declarations -Wtraditional -Wcast-align \
+ -Wstrict-prototypes -Wmissing-prototypes #-Wconversion
+
+CFLAGS= $(strip $(MINGW_CCFLAGS) $(addprefix -I,$(ZLIBINC)) \
+ -W -Wall -O3 $(ALIGN) -funroll-loops \
+ -fomit-frame-pointer) # $(WARNMORE) -g -DPNG_DEBUG=5
+
+LIBNAME = libpng14
+PNGMAJ = 14
+MINGDLL = 14
+PNGMIN = 1.4.0
+PNGVER = $(PNGMAJ).$(PNGMIN)
+
+SHAREDLIB=libpng$(MINGDLL).dll
+STATLIB=libpng.a
+IMPLIB=libpng.dll.a
+SHAREDDEF=libpng.def
+LIBS=$(SHAREDLIB) $(STATLIB)
+EXE=.exe
+
+LDFLAGS=$(strip -L. $(MINGW_LDFLAGS) -lpng $(addprefix -L,$(ZLIBLIB)) -lz)
+LDSFLAGS=$(strip -shared -L. $(MINGW_LDFLAGS))
+LDEXTRA=-Wl,--out-implib=$(IMPLIB) $(addprefix -L,$(ZLIBLIB)) -lz
+
+INCPATH=$(prefix)/include
+LIBPATH=$(exec_prefix)/lib
+
+BINPATH=$(exec_prefix)/bin
+MANPATH=$(prefix)/man
+MAN3PATH=$(MANPATH)/man3
+MAN5PATH=$(MANPATH)/man5
+
+# cosmetic: shortened strings:
+S =$(SRCDIR)
+D =$(DESTDIR)
+DB =$(D)$(BINPATH)
+DI =$(D)$(INCPATH)
+DL =$(D)$(LIBPATH)
+
+OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
+ pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
+ pngwtran.o pngmem.o pngerror.o pngpread.o
+
+OBJSDLL = $(OBJS:.o=.pic.o)
+
+.SUFFIXES: .c .o .pic.o
+
+%.o : %.c
+ $(CC) -c $(CFLAGS) -o $@ $<
+%.pic.o : CFLAGS += -DPNG_BUILD_DLL
+%.pic.o : %.c
+ $(CC) -c $(CFLAGS) -o $@ $<
+
+all: all-static all-shared libpng.pc libpng-config libpng.pc libpng-config
+
+# Make this to verify that "make [...] install" will do what you want.
+buildsetup-tell:
+ @echo VPATH is set to: \"$(VPATH)\"
+ @echo prefix is set to: \"$(prefix)\"
+ @echo -e INCPATH,LIBPATH, etc. are set to:'\n' \
+ $(addprefix $(D),$(INCPATH)'\n' $(LIBPATH)'\n' $(BINPATH)'\n' \
+ $(MANPATH)'\n' $(MAN3PATH)'\n' $(MAN5PATH)'\n')'\n'
+
+libpng.pc: scripts/libpng.pc.in
+ @echo -e Making pkg-config file for this libpng installation..'\n' \
+ using PREFIX=\"$(prefix)\"'\n'
+ cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
+ -e s!@exec_prefix@!$(exec_prefix)! \
+ -e s!@libdir@!$(LIBPATH)! \
+ -e s!@includedir@!$(INCPATH)! \
+ -e s!@includedir@!$(INCPATH)! \
+ -e s!-lpng14!-lpng14\ -lz\ -lm! > libpng.pc
+
+libpng-config: scripts/libpng-config-head.in scripts/libpng-config-body.in
+ @echo -e Making $(LIBNAME) libpng-config file for this libpng \
+ installation..'\n' using PREFIX=\"$(prefix)\"'\n'
+ ( cat $(S)/scripts/libpng-config-head.in; \
+ echo prefix=\"$(prefix)\"; \
+ echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
+ echo L_opts=\"-L$(LIBPATH)\"; \
+ echo libs=\"-lpng$(MINGDLL) -lz\"; \
+ cat $(S)/scripts/libpng-config-body.in ) > libpng-config
+ chmod +x libpng-config
+
+static: all-static
+shared: all-shared
+all-static: $(STATLIB) pngtest-stat$(EXE)
+all-shared: $(SHAREDLIB) pngtest$(EXE)
+
+$(STATLIB): $(OBJS)
+ $(AR) rc $@ $(OBJS)
+ $(RANLIB) $@
+
+$(SHAREDDEF): scripts/pngwin.def
+ cat $< | sed -e '1{G;s/^\(.*\)\(\n\)/EXPORTS/;};2,/^EXPORTS/d' | \
+ sed -e 's/\([^;]*\);/;/' > $@
+
+$(SHAREDLIB): $(OBJSDLL) $(SHAREDDEF)
+ $(CC) $(LDSFLAGS) -o $@ $(OBJSDLL) -L. $(LDEXTRA)
+
+pngtest$(EXE): pngtest.pic.o $(SHAREDLIB)
+ $(CC) $(CFLAGS) $< $(LDFLAGS) -o $@
+
+pngtest-stat$(EXE): pngtest.o $(STATLIB)
+ $(CC) -static $(CFLAGS) $< $(LDFLAGS) -o $@
+
+test: test-static test-shared
+
+test-static: pngtest-stat$(EXE)
+ ./pngtest-stat $(S)/pngtest.png
+
+test-shared: pngtest$(EXE)
+ ./pngtest $(S)/pngtest.png
+
+install-static: $(STATLIB) install-headers install-man
+ -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
+ install -m 644 $(STATLIB) $(DL)/$(LIBNAME).a
+ -@rm -f $(DL)/$(STATLIB)
+ (cd $(DL); ln -sf $(LIBNAME).a $(STATLIB))
+
+install-shared: $(SHAREDLIB) libpng.pc libpng-config install-headers install-man
+ -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
+ -@if [ ! -d $(DB) ]; then $(MKDIR_P) $(DB); fi
+ -@if [ ! -d $(DL)/pkgconfig ]; then $(MKDIR_P) $(DL)/pkgconfig; fi
+ -@/bin/rm -f $(DL)/pkgconfig/$(LIBNAME).pc
+ -@/bin/rm -f $(DL)/pkgconfig/libpng.pc
+ install -m 644 $(IMPLIB) $(DL)/$(LIBNAME).dll.a
+ -@rm -f $(DL)/$(IMPLIB)
+ (cd $(DL); ln -sf $(LIBNAME).dll.a $(IMPLIB))
+ install -s -m 755 $(SHAREDLIB) $(DB)
+ install -m 644 libpng.pc $(DL)/pkgconfig/$(LIBNAME).pc
+ (cd $(DL)/pkgconfig; ln -sf $(LIBNAME).pc libpng.pc)
+
+install-headers:
+ -@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
+ -@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
+ -@rm -f $(DI)/png.h
+ -@rm -f $(DI)/pngconf.h
+ install -m 644 $(S)/png.h $(S)/pngconf.h $(DI)/$(LIBNAME)
+ -@rm -f $(DI)/libpng
+ (cd $(DI); ln -sf $(LIBNAME) libpng; ln -sf $(LIBNAME)/* .)
+
+install-man:
+ -@if [ ! -d $(D)$(MAN3PATH) ]; then $(MKDIR_P) $(D)$(MAN3PATH); fi
+ -@if [ ! -d $(D)$(MAN5PATH) ]; then $(MKDIR_P) $(D)$(MAN5PATH); fi
+ install -m 644 $(S)/libpngpf.3 $(S)/libpng.3 $(D)$(MAN3PATH)
+ install -m 644 $(S)/png.5 $(D)$(MAN5PATH)
+
+install-config: libpng-config
+ -@if [ ! -d $(DB) ]; then $(MKDIR_P) $(DB); fi
+ -@/bin/rm -f $(DB)/libpng-config
+ -@/bin/rm -f $(DB)/$(LIBNAME)-config
+ cp libpng-config $(DB)/$(LIBNAME)-config
+ chmod 755 $(DB)/$(LIBNAME)-config
+ (cd $(DB); ln -sf $(LIBNAME)-config libpng-config)
+
+# Run this to verify that a future `configure' run will pick up the settings
+# you want.
+test-config-install: SHELL=/bin/bash
+test-config-install: $(DB)/libpng-config
+ @echo -e Testing libpng-config functions...'\n'
+ @ for TYRA in LDFLAGS CPPFLAGS CFLAGS LIBS VERSION; \
+ do \
+ printf "(%d)\t %10s =%s\n" $$(($$gytiu + 1)) $$TYRA \
+ "$$($(DB)/libpng-config `echo --$$TYRA |tr '[:upper:]' '[:lower:]'`)"; \
+ gytiu=$$(( $$gytiu + 1 )); \
+ done
+
+install: install-static install-shared install-man install-config
+
+# If you installed in $(DESTDIR), test-installed won't work until you
+# move the library to its final location. Use test-dd to test it
+# before then.
+
+test-dd:
+ echo
+ echo Testing installed dynamic shared library in $(DL).
+ $(CC) -I$(DI) $(CFLAGS) \
+ `$(BINPATH)/libpng14-config --cflags` pngtest.c \
+ -L$(DL) -L$(ZLIBLIB) \
+ -o pngtestd `$(BINPATH)/libpng14-config --ldflags`
+ ./pngtestd pngtest.png
+
+test-installed:
+ $(CC) $(CFLAGS) \
+ `$(BINPATH)/libpng14-config --cflags` pngtest.c \
+ -L$(ZLIBLIB) \
+ -o pngtesti$(EXE) `$(BINPATH)/libpng14-config --ldflags`
+ ./pngtesti$(EXE) pngtest.png
+
+clean:
+ /bin/rm -f *.pic.o *.o $(STATLIB) $(IMPLIB) $(SHAREDLIB) \
+ pngtest-stat$(EXE) pngtest$(EXE) pngout.png $(SHAREDDEF) \
+ libpng-config libpng.pc pngtesti$(EXE)
+
+DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
+writelock:
+ chmod a-w *.[ch35] $(DOCS) scripts/*
+
+.PHONY: buildsetup-tell libpng.pc libpng-config test-config-install clean
+
+# DO NOT DELETE THIS LINE -- make depend depends on it.
+
+png.o png.pic.o: png.h pngconf.h pngpriv.h png.c
+pngerror.o pngerror.pic.o: png.h pngconf.h pngpriv.h pngerror.c
+pngrio.o pngrio.pic.o: png.h pngconf.h pngpriv.h pngrio.c
+pngwio.o pngwio.pic.o: png.h pngconf.h pngpriv.h pngwio.c
+pngmem.o pngmem.pic.o: png.h pngconf.h pngpriv.h pngmem.c
+pngset.o pngset.pic.o: png.h pngconf.h pngpriv.h pngset.c
+pngget.o pngget.pic.o: png.h pngconf.h pngpriv.h pngget.c
+pngread.o pngread.pic.o: png.h pngconf.h pngpriv.h pngread.c
+pngrtran.o pngrtran.pic.o: png.h pngconf.h pngpriv.h pngrtran.c
+pngrutil.o pngrutil.pic.o: png.h pngconf.h pngpriv.h pngrutil.c
+pngtrans.o pngtrans.pic.o: png.h pngconf.h pngpriv.h pngtrans.c
+pngwrite.o pngwrite.pic.o: png.h pngconf.h pngpriv.h pngwrite.c
+pngwtran.o pngwtran.pic.o: png.h pngconf.h pngpriv.h pngwtran.c
+pngwutil.o pngwutil.pic.o: png.h pngconf.h pngpriv.h pngwutil.c
+pngpread.o pngpread.pic.o: png.h pngconf.h pngpriv.h pngpread.c
+
+pngtest.o pngtest.pic.o: png.h pngconf.h pngtest.c
diff --git a/src/3rdparty/libpng/scripts/makefile.mips b/src/3rdparty/libpng/scripts/makefile.mips
new file mode 100644
index 0000000..5e1040e
--- /dev/null
+++ b/src/3rdparty/libpng/scripts/makefile.mips
@@ -0,0 +1,87 @@
+# makefile for libpng
+# Copyright (C) Glenn Randers-Pehrson
+# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
+#
+# This code is released under the libpng license.
+# For conditions of distribution and use, see the disclaimer
+# and license in png.h
+
+# where make install puts libpng.a and png.h
+prefix=/usr/local
+INCPATH=$(prefix)/include
+LIBPATH=$(prefix)/lib
+
+# override DESTDIR= on the make install command line to easily support
+# installing into a temporary location. Example:
+#
+# make install DESTDIR=/tmp/build/libpng
+#
+# If you're going to install into a temporary location
+# via DESTDIR, $(DESTDIR)$(prefix) must already exist before
+# you execute make install.
+DESTDIR=
+
+CC=cc
+CFLAGS=-I../zlib -O -systype sysv -DSYSV -w -Dmips
+#CFLAGS=-O
+LDFLAGS=-L. -L../zlib/ -lpng -lz -lm
+
+#RANLIB=ranlib
+RANLIB=echo
+
+OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
+ pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
+ pngwtran.o pngmem.o pngerror.o pngpread.o
+
+all: libpng.a pngtest
+
+libpng.a: $(OBJS)
+ ar rc $@ $(OBJS)
+ $(RANLIB) $@
+
+pngtest: pngtest.o libpng.a
+ $(CC) -o pngtest $(CFLAGS) pngtest.o $(LDFLAGS)
+
+test: pngtest
+ ./pngtest
+
+install: libpng.a
+ -@mkdir $(DESTDIR)$(INCPATH)
+ -@mkdir $(DESTDIR)$(INCPATH)/libpng
+ -@mkdir $(DESTDIR)$(LIBPATH)
+ -@rm -f $(DESTDIR)$(INCPATH)/png.h
+ -@rm -f $(DESTDIR)$(INCPATH)/pngconf.h
+ cp png.h $(DESTDIR)$(INCPATH)/libpng
+ cp pngconf.h $(DESTDIR)$(INCPATH)/libpng
+ chmod 644 $(DESTDIR)$(INCPATH)/libpng/png.h
+ chmod 644 $(DESTDIR)$(INCPATH)/libpng/pngconf.h
+ (cd $(DESTDIR)$(INCPATH); ln -f -s libpng/* .)
+ cp libpng.a $(DESTDIR)$(LIBPATH)
+ chmod 644 $(DESTDIR)$(LIBPATH)/libpng.a
+
+clean:
+ rm -f *.o libpng.a pngtest pngout.png
+
+DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
+writelock:
+ chmod a-w *.[ch35] $(DOCS) scripts/*
+
+# DO NOT DELETE THIS LINE -- make depend depends on it.
+
+png.o: png.h pngconf.h pngpriv.h
+pngerror.o: png.h pngconf.h pngpriv.h
+pngrio.o: png.h pngconf.h pngpriv.h
+pngwio.o: png.h pngconf.h pngpriv.h
+pngmem.o: png.h pngconf.h pngpriv.h
+pngset.o: png.h pngconf.h pngpriv.h
+pngget.o: png.h pngconf.h pngpriv.h
+pngread.o: png.h pngconf.h pngpriv.h
+pngpread.o: png.h pngconf.h pngpriv.h
+pngrtran.o: png.h pngconf.h pngpriv.h
+pngrutil.o: png.h pngconf.h pngpriv.h
+pngtrans.o: png.h pngconf.h pngpriv.h
+pngwrite.o: png.h pngconf.h pngpriv.h
+pngwtran.o: png.h pngconf.h pngpriv.h
+pngwutil.o: png.h pngconf.h pngpriv.h
+
+pngtest.o: png.h pngconf.h
diff --git a/src/3rdparty/libpng/scripts/makefile.msc b/src/3rdparty/libpng/scripts/makefile.msc
new file mode 100644
index 0000000..e744644
--- /dev/null
+++ b/src/3rdparty/libpng/scripts/makefile.msc
@@ -0,0 +1,91 @@
+# makefile for libpng
+# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
+# Copyright (C) 2006, 2009 Glenn Randers-Pehrson
+#
+# This code is released under the libpng license.
+# For conditions of distribution and use, see the disclaimer
+# and license in png.h
+#
+# Assumes that zlib.lib, zconf.h, and zlib.h have been copied to ..\zlib
+
+# -------- Microsoft C 5.1 and later, does not use assembler code --------
+MODEL=L
+CFLAGS=-Oait -Gs -nologo -W3 -A$(MODEL) -I..\zlib
+#-Ox generates bad code with MSC 5.1
+CC=cl
+LD=link
+LDFLAGS=/e/st:0x1500/noe
+O=.obj
+
+#uncomment next to put error messages in a file
+ERRFILE= >> pngerrs
+
+# variables
+OBJS1 = png$(O) pngset$(O) pngget$(O) pngrutil$(O) pngtrans$(O) pngwutil$(O)
+OBJS2 = pngmem$(O) pngpread$(O) pngread$(O) pngerror$(O) pngwrite$(O)
+OBJS3 = pngrtran$(O) pngwtran$(O) pngrio$(O) pngwio$(O)
+
+all: libpng.lib
+
+png$(O): png.h pngconf.h pngpriv.h
+ $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
+
+pngset$(O): png.h pngconf.h pngpriv.h
+ $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
+
+pngget$(O): png.h pngconf.h pngpriv.h
+ $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
+
+pngread$(O): png.h pngconf.h pngpriv.h
+ $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
+
+pngpread$(O): png.h pngconf.h pngpriv.h
+ $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
+
+pngrtran$(O): png.h pngconf.h pngpriv.h
+ $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
+
+pngrutil$(O): png.h pngconf.h pngpriv.h
+ $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
+
+pngerror$(O): png.h pngconf.h pngpriv.h
+ $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
+
+pngmem$(O): png.h pngconf.h pngpriv.h
+ $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
+
+pngrio$(O): png.h pngconf.h pngpriv.h
+ $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
+
+pngwio$(O): png.h pngconf.h pngpriv.h
+ $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
+
+pngtrans$(O): png.h pngconf.h pngpriv.h
+ $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
+
+pngwrite$(O): png.h pngconf.h pngpriv.h
+ $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
+
+pngwtran$(O): png.h pngconf.h pngpriv.h
+ $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
+
+pngwutil$(O): png.h pngconf.h pngpriv.h
+ $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
+
+libpng.lib: $(OBJS1) $(OBJS2) $(OBJS3)
+ del libpng.lib
+ lib libpng $(OBJS1);
+ lib libpng $(OBJS2);
+ lib libpng $(OBJS3);
+
+pngtest$(O): png.h pngconf.h
+ $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
+
+pngtest.exe: pngtest.obj libpng.lib
+ $(LD) $(LDFLAGS) pngtest.obj,,,libpng.lib ..\zlib\zlib.lib ;
+
+test: pngtest.exe
+ pngtest
+
+# End of makefile for libpng
+
diff --git a/src/3rdparty/libpng/scripts/makefile.ne12bsd b/src/3rdparty/libpng/scripts/makefile.ne12bsd
new file mode 100644
index 0000000..acf9c3c
--- /dev/null
+++ b/src/3rdparty/libpng/scripts/makefile.ne12bsd
@@ -0,0 +1,46 @@
+# makefile for libpng for NetBSD for the standard
+# make obj && make depend && make && make test
+# make includes && make install
+# Copyright (C) 2002 Patrick R.L. Welche
+# Copyright (C) 2007, 2009 Glenn Randers-Pehrson
+#
+# This code is released under the libpng license.
+# For conditions of distribution and use, see the disclaimer
+# and license in png.h
+
+# You should also run makefile.netbsd
+
+LOCALBASE?=/usr/local
+LIBDIR= ${LOCALBASE}/lib
+MANDIR= ${LOCALBASE}/man
+INCSDIR=${LOCALBASE}/include/libpng14
+
+LIB= png14
+SHLIB_MAJOR= 0
+SHLIB_MINOR= 1.4.0
+SRCS= png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \
+ pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
+ pngwtran.c pngmem.c pngerror.c pngpread.c
+INCS= png.h pngconf.h
+MAN= libpng.3 libpngpf.3 png.5
+
+CPPFLAGS+=-I${.CURDIR}
+
+# We should be able to do something like this instead of the manual
+# uncommenting, but it core dumps for me at the moment:
+# .if ${MACHINE_ARCH} == "i386"
+# MKLINT= no
+# .endif
+
+CLEANFILES+=pngtest.o pngtest
+
+pngtest.o: pngtest.c
+ ${CC} -c ${CPPFLAGS} ${CFLAGS} ${.ALLSRC} -o ${.TARGET}
+
+pngtest: pngtest.o libpng.a
+ ${CC} ${LDFLAGS} ${.ALLSRC} -o${.TARGET} -lz -lm
+
+test: pngtest
+ cd ${.CURDIR} && ${.OBJDIR}/pngtest
+
+.include <bsd.lib.mk>
diff --git a/src/3rdparty/libpng/scripts/makefile.netbsd b/src/3rdparty/libpng/scripts/makefile.netbsd
new file mode 100644
index 0000000..ef470f8
--- /dev/null
+++ b/src/3rdparty/libpng/scripts/makefile.netbsd
@@ -0,0 +1,46 @@
+# makefile for libpng for NetBSD for the standard
+# make obj && make depend && make && make test
+# make includes && make install
+# Copyright (C) 2002 Patrick R.L. Welche
+# Copyright (C) 2007-2009 Glenn Randers-Pehrson
+#
+# This code is released under the libpng license.
+# For conditions of distribution and use, see the disclaimer
+# and license in png.h
+
+# You should also run makefile.ne14bsd
+
+LOCALBASE?=/usr/local
+LIBDIR= ${LOCALBASE}/lib
+MANDIR= ${LOCALBASE}/man
+INCSDIR=${LOCALBASE}/include
+
+LIB= png
+SHLIB_MAJOR= 3
+SHLIB_MINOR= 1.4.0
+SRCS= png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \
+ pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
+ pngwtran.c pngmem.c pngerror.c pngpread.c
+INCS= png.h pngconf.h
+MAN= libpng.3 libpngpf.3 png.5
+
+CPPFLAGS+=-I${.CURDIR}
+
+# We should be able to do something like this instead of the manual
+# uncommenting, but it core dumps for me at the moment:
+# .if ${MACHINE_ARCH} == "i386"
+# MKLINT= no
+# .endif
+
+CLEANFILES+=pngtest.o pngtest
+
+pngtest.o: pngtest.c
+ ${CC} -c ${CPPFLAGS} ${CFLAGS} ${.ALLSRC} -o ${.TARGET}
+
+pngtest: pngtest.o libpng.a
+ ${CC} ${LDFLAGS} ${.ALLSRC} -o${.TARGET} -lz -lm
+
+test: pngtest
+ cd ${.CURDIR} && ${.OBJDIR}/pngtest
+
+.include <bsd.lib.mk>
diff --git a/src/3rdparty/libpng/scripts/makefile.openbsd b/src/3rdparty/libpng/scripts/makefile.openbsd
new file mode 100644
index 0000000..c924284
--- /dev/null
+++ b/src/3rdparty/libpng/scripts/makefile.openbsd
@@ -0,0 +1,76 @@
+# makefile for libpng
+# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
+# Copyright (C) 2007-2009 Glenn Randers-Pehrson
+#
+# This code is released under the libpng license.
+# For conditions of distribution and use, see the disclaimer
+# and license in png.h
+
+PREFIX?= /usr/local
+LIBDIR= ${PREFIX}/lib
+MANDIR= ${PREFIX}/man/cat
+
+SHLIB_MAJOR= 0
+SHLIB_MINOR= 1.4.0
+
+LIB= png
+SRCS= png.c pngerror.c pngget.c pngmem.c pngpread.c \
+ pngread.c pngrio.c pngrtran.c pngrutil.c pngset.c pngtrans.c \
+ pngwio.c pngwrite.c pngwtran.c pngwutil.c
+
+HDRS= png.h pngconf.h
+
+CFLAGS+= -W -Wall
+CPPFLAGS+= -I${.CURDIR}
+
+NOPROFILE= Yes
+
+CLEANFILES+= pngtest.o pngtest
+
+MAN= libpng.3 libpngpf.3 png.5
+DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO libpng.txt
+
+pngtest.o: pngtest.c
+ ${CC} ${CPPFLAGS} ${CFLAGS} -c ${.ALLSRC} -o ${.TARGET}
+
+pngtest: pngtest.o
+ ${CC} ${LDFLAGS} ${.ALLSRC} -o ${.TARGET} -L${.OBJDIR} -lpng -lz -lm
+
+test: pngtest
+ cd ${.OBJDIR} && env \
+ LD_LIBRARY_PATH="${.OBJDIR}" ${.OBJDIR}/pngtest
+
+beforeinstall:
+ if [ ! -d ${DESTDIR}${PREFIX}/include/libpng ]; then \
+ ${INSTALL} -d -o root -g wheel ${DESTDIR}${PREFIX}/include; \
+ fi
+ if [ ! -d ${DESTDIR}${LIBDIR} ]; then \
+ ${INSTALL} -d -o root -g wheel ${DESTDIR}${LIBDIR}; \
+ fi
+ if [ ! -d ${DESTDIR}${LIBDIR}/debug ]; then \
+ ${INSTALL} -d -o root -g wheel ${DESTDIR}${LIBDIR}/debug; \
+ fi
+ if [ ! -d ${DESTDIR}${MANDIR}3 ]; then \
+ ${INSTALL} -d -o root -g wheel ${DESTDIR}${MANDIR}3; \
+ fi
+ if [ ! -d ${DESTDIR}${MANDIR}5 ]; then \
+ ${INSTALL} -d -o root -g wheel ${DESTDIR}${MANDIR}5; \
+ fi
+ if [ ! -d ${DESTDIR}${PREFIX}/share/doc/png ]; then \
+ ${INSTALL} -d -o root -g wheel ${DESTDIR}${PREFIX}/share/doc/png; \
+ fi
+
+afterinstall:
+ @rm -f ${DESTDIR}${LIBDIR}/libpng_pic.a
+ @rm -f ${DESTDIR}${LIBDIR}/debug/libpng.a
+ @rm -f ${DESTDIR}${PREFIX}/include/png.h
+ @rm -f ${DESTDIR}${PREFIX}/include/pngconf.h
+ @rmdir ${DESTDIR}${LIBDIR}/debug 2>/dev/null || true
+ ${INSTALL} ${INSTALL_COPY} -o ${SHAREOWN} -g ${SHAREGRP} \
+ -m ${NONBINMODE} ${HDRS} ${DESTDIR}${PREFIX}/include
+ ${INSTALL} ${INSTALL_COPY} -o ${SHAREOWN} -g ${SHAREGRP} \
+ -m ${NONBINMODE} ${HDRS} ${DESTDIR}${PREFIX}/include
+ ${INSTALL} ${INSTALL_COPY} -o ${SHAREOWN} -g ${SHAREGRP} \
+ -m ${NONBINMODE} ${DOCS} ${DESTDIR}${PREFIX}/share/doc/png
+
+.include <bsd.lib.mk>
diff --git a/src/3rdparty/libpng/scripts/makefile.os2 b/src/3rdparty/libpng/scripts/makefile.os2
new file mode 100644
index 0000000..affb03c
--- /dev/null
+++ b/src/3rdparty/libpng/scripts/makefile.os2
@@ -0,0 +1,72 @@
+# makefile for libpng on OS/2 with gcc
+#
+# This code is released under the libpng license.
+# For conditions of distribution and use, see the disclaimer
+# and license in png.h
+
+# Related files: pngos2.def
+
+CC=gcc -Zomf -s
+
+# Where the zlib library and include files are located
+ZLIBLIB=../zlib
+ZLIBINC=../zlib
+
+WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
+ -Wmissing-declarations -Wtraditional -Wcast-align \
+ -Wstrict-prototypes -Wmissing-prototypes #-Wconversion
+CFLAGS=-I$(ZLIBINC) -W -Wall -O6 -funroll-loops -malign-loops=2 \
+ -malign-functions=2 #$(WARNMORE) -g -DPNG_DEBUG=5
+LDFLAGS=-L. -L$(ZLIBLIB) -lpng -lzdll -Zcrtdll
+AR=emxomfar
+
+PNGLIB=png.lib
+IMPLIB=emximp
+SHAREDLIB=png.dll
+SHAREDLIBIMP=pngdll.lib
+
+OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
+ pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
+ pngwtran.o pngmem.o pngerror.o pngpread.o
+
+.SUFFIXES: .c .o
+
+all: $(PNGLIB) $(SHAREDLIB) $(SHAREDLIBIMP)
+
+$(PNGLIB): $(OBJS)
+ $(AR) rc $@ $(OBJS)
+
+$(SHAREDLIB): $(OBJS) pngos2.def
+ $(CC) $(LDFLAGS) -Zdll -o $@ $^
+
+$(SHAREDLIBIMP): pngos2.def
+ $(IMPLIB) -o $@ $^
+
+pngtest.exe: pngtest.o png.dll pngdll.lib
+ $(CC) -o $@ $(CFLAGS) $< $(LDFLAGS)
+
+test: pngtest.exe
+ ./pngtest.exe
+
+clean:
+ rm -f *.o $(PNGLIB) png.dll pngdll.lib pngtest.exe pngout.png
+
+# DO NOT DELETE THIS LINE -- make depend depends on it.
+
+png.o png.pic.o: png.h pngconf.h pngpriv.h
+pngerror.o pngerror.pic.o: png.h pngconf.h pngpriv.h
+pngrio.o pngrio.pic.o: png.h pngconf.h pngpriv.h
+pngwio.o pngwio.pic.o: png.h pngconf.h pngpriv.h
+pngmem.o pngmem.pic.o: png.h pngconf.h pngpriv.h
+pngset.o pngset.pic.o: png.h pngconf.h pngpriv.h
+pngget.o pngget.pic.o: png.h pngconf.h pngpriv.h
+pngread.o pngread.pic.o: png.h pngconf.h pngpriv.h
+pngrtran.o pngrtran.pic.o: png.h pngconf.h pngpriv.h
+pngrutil.o pngrutil.pic.o: png.h pngconf.h pngpriv.h
+pngtrans.o pngtrans.pic.o: png.h pngconf.h pngpriv.h
+pngwrite.o pngwrite.pic.o: png.h pngconf.h pngpriv.h
+pngwtran.o pngwtran.pic.o: png.h pngconf.h pngpriv.h
+pngwutil.o pngwutil.pic.o: png.h pngconf.h pngpriv.h
+pngpread.o pngpread.pic.o: png.h pngconf.h pngpriv.h
+
+pngtest.o: png.h pngconf.h
diff --git a/src/3rdparty/libpng/scripts/makefile.sco b/src/3rdparty/libpng/scripts/makefile.sco
new file mode 100644
index 0000000..22bb976
--- /dev/null
+++ b/src/3rdparty/libpng/scripts/makefile.sco
@@ -0,0 +1,232 @@
+# makefile for SCO OSr5 ELF and Unixware 7 with Native cc
+# Contributed by Mike Hopkirk (hops@sco.com) modified from Makefile.lnx
+# force ELF build dynamic linking, SONAME setting in lib and RPATH in app
+# Copyright (C) 2002, 2006 Glenn Randers-Pehrson
+# Copyright (C) 1998 Greg Roelofs
+# Copyright (C) 1996, 1997 Andreas Dilger
+#
+# This code is released under the libpng license.
+# For conditions of distribution and use, see the disclaimer
+# and license in png.h
+
+# Library name:
+LIBNAME = libpng14
+PNGMAJ = 14
+PNGMIN = 1.4.0
+PNGVER = $(PNGMAJ).$(PNGMIN)
+
+# Shared library names:
+LIBSO=$(LIBNAME).so
+LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
+LIBSOVER=$(LIBNAME).so.$(PNGVER)
+OLDSO=libpng.so
+OLDSOMAJ=libpng.so.14
+OLDSOVER=libpng.so.14.$(PNGMIN)
+
+# Utilities:
+CC=cc
+AR_RC=ar rc
+MKDIR_P=mkdir
+LN_SF=ln -f -s
+RANLIB=echo
+RM_F=/bin/rm -f
+
+# where make install puts libpng.a, $(OLDSO)*, and png.h
+prefix=/usr/local
+exec_prefix=$(prefix)
+
+# Where the zlib library and include files are located
+#ZLIBLIB=/usr/local/lib
+#ZLIBINC=/usr/local/include
+ZLIBLIB=../zlib
+ZLIBINC=../zlib
+
+CFLAGS= -dy -belf -I$(ZLIBINC) -O3
+LDFLAGS=-L. -L$(ZLIBLIB) -lpng14 -lz -lm
+
+INCPATH=$(prefix)/include
+LIBPATH=$(exec_prefix)/lib
+MANPATH=$(prefix)/man
+BINPATH=$(exec_prefix)/bin
+
+# override DESTDIR= on the make install command line to easily support
+# installing into a temporary location. Example:
+#
+# make install DESTDIR=/tmp/build/libpng
+#
+# If you're going to install into a temporary location
+# via DESTDIR, $(DESTDIR)$(prefix) must already exist before
+# you execute make install.
+DESTDIR=
+
+DB=$(DESTDIR)$(BINPATH)
+DI=$(DESTDIR)$(INCPATH)
+DL=$(DESTDIR)$(LIBPATH)
+DM=$(DESTDIR)$(MANPATH)
+
+OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
+ pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
+ pngwtran.o pngmem.o pngerror.o pngpread.o
+
+OBJSDLL = $(OBJS:.o=.pic.o)
+
+.SUFFIXES: .c .o .pic.o
+
+.c.pic.o:
+ $(CC) -c $(CFLAGS) -KPIC -o $@ $*.c
+
+all: libpng.a $(LIBSO) pngtest libpng.pc libpng-config
+
+libpng.a: $(OBJS)
+ $(AR_RC) $@ $(OBJS)
+ $(RANLIB) $@
+
+libpng.pc:
+ cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
+ -e s!@exec_prefix@!$(exec_prefix)! \
+ -e s!@libdir@!$(LIBPATH)! \
+ -e s!@includedir@!$(INCPATH)! \
+ -e s!-lpng14!-lpng14\ -lz\ -lm! > libpng.pc
+
+libpng-config:
+ ( cat scripts/libpng-config-head.in; \
+ echo prefix=\"$(prefix)\"; \
+ echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
+ echo ccopts=\"-belf\"; \
+ echo L_opts=\"-L$(LIBPATH)\"; \
+ echo libs=\"-lpng14 -lz -lm\"; \
+ cat scripts/libpng-config-body.in ) > libpng-config
+ chmod +x libpng-config
+
+$(LIBSO): $(LIBSOMAJ)
+ $(LN_SF) $(LIBSOMAJ) $(LIBSO)
+
+$(LIBSOMAJ): $(LIBSOVER)
+ $(LN_SF) $(LIBSOVER) $(LIBSOMAJ)
+
+$(LIBSOVER): $(OBJSDLL)
+ $(CC) -G -Wl,-h,$(LIBSOMAJ) -o $(LIBSOVER) \
+ $(OBJSDLL)
+
+$(OLDSOVER): $(OBJSDLL)
+ $(CC) -G -Wl,-h,$(OLDSOMAJ) -o $(OLDSOVER) \
+ $(OBJSDLL)
+
+pngtest: pngtest.o $(LIBSO)
+ LD_RUN_PATH=.:$(ZLIBLIB) $(CC) -o pngtest $(CFLAGS) pngtest.o $(LDFLAGS)
+
+test: pngtest
+ ./pngtest
+
+install-headers: png.h pngconf.h
+ -@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
+ -@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
+ -@$(RM_F) $(DI)/png.h
+ -@$(RM_F) $(DI)/pngconf.h
+ cp png.h pngconf.h $(DI)/$(LIBNAME)
+ chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h
+ -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h
+ -@$(RM_F) $(DI)/libpng
+ (cd $(DI); $(LN_SF) $(LIBNAME) libpng; $(LN_SF) $(LIBNAME)/* .)
+
+install-static: install-headers libpng.a
+ -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
+ cp libpng.a $(DL)/$(LIBNAME).a
+ chmod 644 $(DL)/$(LIBNAME).a
+ -@$(RM_F) $(DL)/libpng.a
+ (cd $(DL); $(LN_SF) $(LIBNAME).a libpng.a)
+
+install-shared: install-headers $(LIBSOVER) libpng.pc \
+ $(OLDSOVER)
+ -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
+ -@$(RM_F) $(DL)/$(LIBSOVER)* $(DL)/$(LIBSO)
+ -@$(RM_F) $(DL)/$(LIBSOMAJ)
+ -@$(RM_F) $(DL)/$(OLDSO)
+ -@$(RM_F) $(DL)/$(OLDSOMAJ)
+ -@$(RM_F) $(DL)/$(OLDSOVER)*
+ cp $(LIBSOVER) $(DL)
+ cp $(OLDSOVER) $(DL)
+ chmod 755 $(DL)/$(LIBSOVER)
+ chmod 755 $(DL)/$(OLDSOVER)
+ (cd $(DL); \
+ $(LN_SF) $(OLDSOVER) $(OLDSOMAJ); \
+ $(LN_SF) $(OLDSOMAJ) $(OLDSO); \
+ $(LN_SF) $(LIBSOVER) $(LIBSOMAJ); \
+ $(LN_SF) $(LIBSOMAJ) $(LIBSO))
+ -@if [ ! -d $(DL)/pkgconfig ]; then $(MKDIR_P) $(DL)/pkgconfig; fi
+ -@$(RM_F) $(DL)/pkgconfig/$(LIBNAME).pc
+ -@$(RM_F) $(DL)/pkgconfig/libpng.pc
+ cp libpng.pc $(DL)/pkgconfig/$(LIBNAME).pc
+ chmod 644 $(DL)/pkgconfig/$(LIBNAME).pc
+ (cd $(DL)/pkgconfig; $(LN_SF) $(LIBNAME).pc libpng.pc)
+
+install-man: libpng.3 libpngpf.3 png.5
+ -@if [ ! -d $(DM) ]; then $(MKDIR_P) $(DM); fi
+ -@if [ ! -d $(DM)/man3 ]; then $(MKDIR_P) $(DM)/man3; fi
+ -@$(RM_F) $(DM)/man3/libpng.3
+ -@$(RM_F) $(DM)/man3/libpngpf.3
+ cp libpng.3 $(DM)/man3
+ cp libpngpf.3 $(DM)/man3
+ -@if [ ! -d $(DM)/man5 ]; then $(MKDIR_P) $(DM)/man5; fi
+ -@$(RM_F) $(DM)/man5/png.5
+ cp png.5 $(DM)/man5
+
+install-config: libpng-config
+ -@if [ ! -d $(DB) ]; then $(MKDIR_P) $(DB); fi
+ -@$(RM_F) $(DB)/libpng-config
+ -@$(RM_F) $(DB)/$(LIBNAME)-config
+ cp libpng-config $(DB)/$(LIBNAME)-config
+ chmod 755 $(DB)/$(LIBNAME)-config
+ (cd $(DB); $(LN_SF) $(LIBNAME)-config libpng-config)
+
+install: install-static install-shared install-man install-config
+
+# If you installed in $(DESTDIR), test-installed won't work until you
+# move the library to its final location. Use test-dd to test it
+# before then.
+
+test-dd:
+ echo
+ echo Testing installed dynamic shared library in $(DL).
+ $(CC) -I$(DI) $(CFLAGS) \
+ `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
+ -L$(DL) -L$(ZLIBLIB) \
+ -o pngtestd `$(BINPATH)/$(LIBNAME)-config --ldflags`
+ ./pngtestd pngtest.png
+
+test-installed:
+ $(CC) $(CFLAGS) \
+ `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
+ -L$(ZLIBLIB) \
+ -o pngtesti `$(BINPATH)/$(LIBNAME)-config --ldflags`
+ ./pngtesti pngtest.png
+
+clean:
+ $(RM_F) *.o libpng.a pngtest pngout.png libpng-config \
+ $(LIBSO) $(LIBSOMAJ)* pngtest-static pngtesti \
+ $(OLDSOVER) \
+ libpng.pc
+
+DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
+writelock:
+ chmod a-w *.[ch35] $(DOCS) scripts/*
+
+# DO NOT DELETE THIS LINE -- make depend depends on it.
+
+png.o png.pic.o: png.h pngconf.h pngpriv.h
+pngerror.o pngerror.pic.o: png.h pngconf.h pngpriv.h
+pngrio.o pngrio.pic.o: png.h pngconf.h pngpriv.h
+pngwio.o pngwio.pic.o: png.h pngconf.h pngpriv.h
+pngmem.o pngmem.pic.o: png.h pngconf.h pngpriv.h
+pngset.o pngset.pic.o: png.h pngconf.h pngpriv.h
+pngget.o pngget.pic.o: png.h pngconf.h pngpriv.h
+pngread.o pngread.pic.o: png.h pngconf.h pngpriv.h
+pngrtran.o pngrtran.pic.o: png.h pngconf.h pngpriv.h
+pngrutil.o pngrutil.pic.o: png.h pngconf.h pngpriv.h
+pngtrans.o pngtrans.pic.o: png.h pngconf.h pngpriv.h
+pngwrite.o pngwrite.pic.o: png.h pngconf.h pngpriv.h
+pngwtran.o pngwtran.pic.o: png.h pngconf.h pngpriv.h
+pngwutil.o pngwutil.pic.o: png.h pngconf.h pngpriv.h
+pngpread.o pngpread.pic.o: png.h pngconf.h pngpriv.h
+
+pngtest.o: png.h pngconf.h
diff --git a/src/3rdparty/libpng/scripts/makefile.sggcc b/src/3rdparty/libpng/scripts/makefile.sggcc
new file mode 100644
index 0000000..bcc9d01
--- /dev/null
+++ b/src/3rdparty/libpng/scripts/makefile.sggcc
@@ -0,0 +1,243 @@
+# makefile for libpng.a and libpng14.so, SGI IRIX with 'cc'
+# Copyright (C) 2001-2002, 2006 Glenn Randers-Pehrson
+# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
+#
+# This code is released under the libpng license.
+# For conditions of distribution and use, see the disclaimer
+# and license in png.h
+
+# Library name:
+LIBNAME=libpng14
+PNGMAJ = 14
+PNGMIN = 1.4.0
+PNGVER = $(PNGMAJ).$(PNGMIN)
+
+# Shared library names:
+LIBSO=$(LIBNAME).so
+LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
+LIBSOVER=$(LIBNAME).so.$(PNGVER)
+OLDSO=libpng.so
+OLDSOMAJ=libpng.so.14
+OLDSOVER=libpng.so.14.$(PNGMIN)
+
+# Utilities:
+AR_RC=ar rc
+CC=gcc
+MKDIR_P=mkdir -p
+LN_SF=ln -sf
+RANLIB=echo
+RM_F=/bin/rm -f
+
+# Where make install puts libpng.a, libpng14.so, and libpng14/png.h
+# Prefix must be a full pathname.
+
+prefix=/usr/local
+exec_prefix=$(prefix)
+
+# Where the zlib library and include files are located
+#ZLIBLIB=/usr/local/lib32
+#ZLIBINC=/usr/local/include
+#ZLIBLIB=/usr/local/lib
+#ZLIBINC=/usr/local/include
+ZLIBLIB=../zlib
+ZLIBINC=../zlib
+
+# ABI can be blank to use default for your system, -32, -o32, -n32, or -64
+# See "man abi". zlib must be built with the same ABI.
+ABI=
+
+WARNMORE= # -g -DPNG_DEBUG=5
+CFLAGS=$(ABI) -I$(ZLIBINC) -O $(WARNMORE) -fPIC -mabi=n32
+LDFLAGS=$(ABI) -L. -L$(ZLIBLIB) -lpng -lz -lm
+LDSHARED=cc $(ABI) -shared -soname $(LIBSOMAJ) \
+ -set_version sgi$(PNGMAJ).0
+LDLEGACY=cc $(ABI) -shared -soname $(OLDSOMAJ) \
+ -set_version sgi$3.0
+# See "man dso" for info about shared objects
+
+INCPATH=$(prefix)/include
+LIBPATH=$(exec_prefix)/lib
+#LIBPATH=$(exec_prefix)/lib32
+MANPATH=$(prefix)/man
+BINPATH=$(exec_prefix)/bin
+
+# override DESTDIR= on the make install command line to easily support
+# installing into a temporary location. Example:
+#
+# make install DESTDIR=/tmp/build/libpng
+#
+# If you're going to install into a temporary location
+# via DESTDIR, $(DESTDIR)$(prefix) must already exist before
+# you execute make install.
+DESTDIR=
+
+DB=$(DESTDIR)$(BINPATH)
+DI=$(DESTDIR)$(INCPATH)
+DL=$(DESTDIR)$(LIBPATH)
+DM=$(DESTDIR)$(MANPATH)
+
+OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
+ pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
+ pngwtran.o pngmem.o pngerror.o pngpread.o
+
+all: libpng.a pngtest shared libpng.pc libpng-config
+
+libpng.a: $(OBJS)
+ $(AR_RC) $@ $(OBJS)
+ $(RANLIB) $@
+
+shared: $(LIBSOVER)
+
+libpng.pc:
+ cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
+ -e s!@exec_prefix@!$(exec_prefix)! \
+ -e s!@libdir@!$(LIBPATH)! \
+ -e s!@includedir@!$(INCPATH)! \
+ -e s!-lpng14!-lpng14\ -lz\ -lm! > libpng.pc
+
+libpng-config:
+ ( cat scripts/libpng-config-head.in; \
+ echo prefix=\"$(prefix)\"; \
+ echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
+ echo ccopts=\"$(ABI)\"; \
+ echo cppflags=\"\"; \
+ echo ldopts=\"$(ABI)\"; \
+ echo L_opts=\"-L$(LIBPATH)\"; \
+ echo libdir=\"$(LIBPATH)\"; \
+ echo libs=\"-lpng14 -lz -lm\"; \
+ cat scripts/libpng-config-body.in ) > libpng-config
+ chmod +x libpng-config
+
+$(LIBSO): $(LIBSOMAJ)
+ $(LN_SF) $(LIBSOMAJ) $(LIBSO)
+
+$(LIBSOMAJ): $(LIBSOVER)
+ $(LN_SF) $(LIBSOVER) $(LIBSOMAJ)
+
+$(LIBSOVER): $(OBJS)
+ $(LDSHARED) -o $@ $(OBJS)
+ $(RM_F) $(LIBSO) $(LIBSOMAJ)
+
+$(OLDSOVER): $(OBJS)
+ $(LDLEGACY) -o $@ $(OBJS)
+
+pngtest: pngtest.o libpng.a
+ $(CC) -o pngtest $(CFLAGS) pngtest.o $(LDFLAGS)
+
+test: pngtest
+ echo
+ echo Testing local static library.
+ ./pngtest
+
+install-headers: png.h pngconf.h
+ -@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
+ -@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
+ cp png.h pngconf.h $(DI)/$(LIBNAME)
+ chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h
+ -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h
+ -@$(RM_F) $(DI)/libpng
+ (cd $(DI); $(LN_SF) $(LIBNAME) libpng; $(LN_SF) $(LIBNAME)/* .)
+
+install-static: install-headers libpng.a
+ -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
+ cp libpng.a $(DL)/$(LIBNAME).a
+ chmod 644 $(DL)/$(LIBNAME).a
+ -@$(RM_F) $(DL)/libpng.a
+ (cd $(DL); $(LN_SF) $(LIBNAME).a libpng.a)
+
+install-shared: install-headers $(LIBSOVER) libpng.pc \
+ $(OLDSOVER)
+ -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
+ -@$(RM_F) $(DL)/$(LIBSOVER)* $(DL)/$(LIBSO)
+ -@$(RM_F) $(DL)/$(LIBSOMAJ)
+ -@$(RM_F) $(DL)/$(OLDSO)
+ -@$(RM_F) $(DL)/$(OLDSOMAJ)
+ -@$(RM_F) $(DL)/$(OLDSOVER)*
+ cp $(LIBSOVER) $(DL)
+ cp $(OLDSOVER) $(DL)
+ chmod 755 $(DL)/$(LIBSOVER)
+ chmod 755 $(DL)/$(OLDSOVER)
+ (cd $(DL); \
+ $(LN_SF) $(OLDSOVER) $(OLDSOMAJ); \
+ $(LN_SF) $(OLDSOMAJ) $(OLDSO); \
+ $(LN_SF) $(LIBSOVER) $(LIBSOMAJ); \
+ $(LN_SF) $(LIBSOMAJ) $(LIBSO))
+ -@if [ ! -d $(DL)/pkgconfig ]; then $(MKDIR_P) $(DL)/pkgconfig; fi
+ -@$(RM_F) $(DL)/pkgconfig/$(LIBNAME).pc
+ -@$(RM_F) $(DL)/pkgconfig/libpng.pc
+ cp libpng.pc $(DL)/pkgconfig/$(LIBNAME).pc
+ chmod 644 $(DL)/pkgconfig/$(LIBNAME).pc
+ (cd $(DL)/pkgconfig; $(LN_SF) $(LIBNAME).pc libpng.pc)
+
+install-man: libpng.3 libpngpf.3 png.5
+ -@if [ ! -d $(DM) ]; then $(MKDIR_P) $(DM); fi
+ -@if [ ! -d $(DM)/man3 ]; then $(MKDIR_P) $(DM)/man3; fi
+ -@$(RM_F) $(DM)/man3/libpng.3
+ -@$(RM_F) $(DM)/man3/libpngpf.3
+ cp libpng.3 $(DM)/man3
+ cp libpngpf.3 $(DM)/man3
+ -@if [ ! -d $(DM)/man5 ]; then $(MKDIR_P) $(DM)/man5; fi
+ -@$(RM_F) $(DM)/man5/png.5
+ cp png.5 $(DM)/man5
+
+install-config: libpng-config
+ -@if [ ! -d $(DB) ]; then $(MKDIR_P) $(DB); fi
+ -@$(RM_F) $(DB)/libpng-config
+ -@$(RM_F) $(DB)/$(LIBNAME)-config
+ cp libpng-config $(DB)/$(LIBNAME)-config
+ chmod 755 $(DB)/$(LIBNAME)-config
+ (cd $(DB); $(LN_SF) $(LIBNAME)-config libpng-config)
+
+install: install-static install-shared install-man install-config
+
+# If you installed in $(DESTDIR), test-installed won't work until you
+# move the library to its final location. Use test-dd to test it
+# before then.
+
+test-dd:
+ echo
+ echo Testing installed dynamic shared library in $(DL).
+ $(CC) -I$(DI) -I$(ZLIBINC) \
+ `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
+ -L$(DL) -L$(ZLIBLIB) \
+ -rpath $(ZLIBLIB):$(DL) \
+ -o pngtestd `$(BINPATH)/$(LIBNAME)-config --ldflags`
+ ./pngtestd pngtest.png
+
+test-installed:
+ echo
+ echo Testing installed dynamic shared library.
+ $(CC) -I$(ZLIBINC) \
+ `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
+ -L$(ZLIBLIB) \
+ -rpath $(ZLIBLIB):`$(BINPATH)/$(LIBNAME)-config --libdir` \
+ -o pngtesti `$(BINPATH)/$(LIBNAME)-config --ldflags`
+ ./pngtesti pngtest.png
+
+clean:
+ $(RM_F) libpng.a pngtest pngtesti pngout.png libpng.pc \
+ so_locations libpng-config $(LIBSO) $(LIBSOMAJ)* $(OLDSOVER)
+
+DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
+writelock:
+ chmod a-w *.[ch35] $(DOCS) scripts/*
+
+# DO NOT DELETE THIS LINE -- make depend depends on it.
+
+png.o: png.h pngconf.h pngpriv.h
+pngerror.o: png.h pngconf.h pngpriv.h
+pngrio.o: png.h pngconf.h pngpriv.h
+pngwio.o: png.h pngconf.h pngpriv.h
+pngmem.o: png.h pngconf.h pngpriv.h
+pngset.o: png.h pngconf.h pngpriv.h
+pngget.o: png.h pngconf.h pngpriv.h
+pngread.o: png.h pngconf.h pngpriv.h
+pngrtran.o: png.h pngconf.h pngpriv.h
+pngrutil.o: png.h pngconf.h pngpriv.h
+pngtrans.o: png.h pngconf.h pngpriv.h
+pngwrite.o: png.h pngconf.h pngpriv.h
+pngwtran.o: png.h pngconf.h pngpriv.h
+pngwutil.o: png.h pngconf.h pngpriv.h
+pngpread.o: png.h pngconf.h pngpriv.h
+
+pngtest.o: png.h pngconf.h
diff --git a/src/3rdparty/libpng/scripts/makefile.sgi b/src/3rdparty/libpng/scripts/makefile.sgi
new file mode 100644
index 0000000..c7550f1
--- /dev/null
+++ b/src/3rdparty/libpng/scripts/makefile.sgi
@@ -0,0 +1,247 @@
+# makefile for libpng.a and libpng14.so, SGI IRIX with 'cc'
+# Copyright (C) 2001-2002, 2006, 2007 Glenn Randers-Pehrson
+# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
+#
+# This code is released under the libpng license.
+# For conditions of distribution and use, see the disclaimer
+# and license in png.h
+
+# Library name:
+LIBNAME=libpng14
+PNGMAJ = 14
+PNGMIN = 1.4.0
+PNGVER = $(PNGMAJ).$(PNGMIN)
+
+# Shared library names:
+LIBSO=$(LIBNAME).so
+LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
+LIBSOVER=$(LIBNAME).so.$(PNGVER)
+OLDSO=libpng.so
+OLDSOMAJ=libpng.so.14
+OLDSOVER=libpng.so.14.$(PNGMIN)
+
+# Utilities:
+AR_RC=ar rc
+CC=cc
+MKDIR_P=mkdir -p
+LN_SF=ln -sf
+RANLIB=echo
+RM_F=/bin/rm -f
+
+# Where make install puts libpng.a, libpng14.so, and libpng14/png.h
+# Prefix must be a full pathname.
+
+prefix=/usr/local
+exec_prefix=$(prefix)
+
+# Where the zlib library and include files are located
+#ZLIBLIB=/usr/local/lib32
+#ZLIBINC=/usr/local/include
+#ZLIBLIB=/usr/local/lib
+#ZLIBINC=/usr/local/include
+ZLIBLIB=../zlib
+ZLIBINC=../zlib
+
+# ABI can be blank to use default for your system, -32, -o32, -n32, or -64
+# See "man abi". zlib must be built with the same ABI.
+ABI=
+
+WARNMORE=-fullwarn
+# Note: -KPIC is the default anyhow
+#CFLAGS= $(ABI) -I$(ZLIBINC) -O $(WARNMORE) -KPIC # -g -DPNG_DEBUG=5
+CFLAGS=$(ABI) -I$(ZLIBINC) -O $(WARNMORE)
+LDFLAGS_A=$(ABI) -L. -L$(ZLIBLIB) -lpng14 -lz -lm
+LDFLAGS=$(ABI) -L. -L$(ZLIBLIB) -lpng -lz -lm
+LDSHARED=cc $(ABI) -shared -soname $(LIBSOMAJ) \
+ -set_version sgi$(PNGMAJ).0
+LDLEGACY=cc $(ABI) -shared -soname $(OLDSOMAJ) \
+ -set_version sgi$3.0
+# See "man dso" for info about shared objects
+
+INCPATH=$(prefix)/include
+LIBPATH=$(exec_prefix)/lib
+#LIBPATH=$(exec_prefix)/lib32
+MANPATH=$(prefix)/man
+BINPATH=$(exec_prefix)/bin
+
+# override DESTDIR= on the make install command line to easily support
+# installing into a temporary location. Example:
+#
+# make install DESTDIR=/tmp/build/libpng
+#
+# If you're going to install into a temporary location
+# via DESTDIR, $(DESTDIR)$(prefix) must already exist before
+# you execute make install.
+DESTDIR=
+
+DB=$(DESTDIR)$(BINPATH)
+DI=$(DESTDIR)$(INCPATH)
+DL=$(DESTDIR)$(LIBPATH)
+DM=$(DESTDIR)$(MANPATH)
+
+OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
+ pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
+ pngwtran.o pngmem.o pngerror.o pngpread.o
+
+all: libpng.a pngtest shared libpng.pc libpng-config
+
+libpng.a: $(OBJS)
+ $(AR_RC) $@ $(OBJS)
+ $(RANLIB) $@
+
+shared: $(LIBSOVER)
+
+libpng.pc:
+ cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
+ -e s!@exec_prefix@!$(exec_prefix)! \
+ -e s!@libdir@!$(LIBPATH)! \
+ -e s!@includedir@!$(INCPATH)! \
+ -e s!-lpng14!-lpng14\ -lz\ -lm! > libpng.pc
+
+libpng-config:
+ ( cat scripts/libpng-config-head.in; \
+ echo prefix=\"$(prefix)\"; \
+ echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
+ echo ccopts=\"$(ABI)\"; \
+ echo ldopts=\"$(ABI)\"; \
+ echo L_opts=\"-L$(LIBPATH)\"; \
+ echo libdir=\"$(LIBPATH)\"; \
+ echo libs=\"-lpng14 -lz -lm\"; \
+ cat scripts/libpng-config-body.in ) > libpng-config
+ chmod +x libpng-config
+
+$(LIBSO): $(LIBSOMAJ)
+ $(LN_SF) $(LIBSOMAJ) $(LIBSO)
+
+$(LIBSOMAJ): $(LIBSOVER)
+ $(LN_SF) $(LIBSOVER) $(LIBSOMAJ)
+
+$(LIBSOVER): $(OBJS)
+ $(LDSHARED) -o $@ $(OBJS)
+ $(RM_F) $(LIBSO) $(LIBSOMAJ)
+
+$(OLDSOVER): $(OBJS)
+ $(LDLEGACY) -o $@ $(OBJS)
+
+pngtest: pngtest.o libpng.a
+ $(CC) -o pngtest $(CFLAGS) pngtest.o $(LDFLAGS)
+
+test: pngtest
+ echo
+ echo Testing local static library.
+ ./pngtest
+
+install-headers: png.h pngconf.h
+ -@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
+ -@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
+ cp png.h pngconf.h $(DI)/$(LIBNAME)
+ chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h
+ -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h
+ -@$(RM_F) $(DI)/libpng
+ (cd $(DI); $(LN_SF) $(LIBNAME) libpng; $(LN_SF) $(LIBNAME)/* .)
+
+install-static: install-headers libpng.a
+ -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
+ cp libpng.a $(DL)/$(LIBNAME).a
+ chmod 644 $(DL)/$(LIBNAME).a
+ -@$(RM_F) $(DL)/libpng.a
+ (cd $(DL); $(LN_SF) $(LIBNAME).a libpng.a)
+
+install-shared: install-headers $(LIBSOVER) libpng.pc \
+ $(OLDSOVER)
+ -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
+ -@$(RM_F) $(DL)/$(LIBSOVER)* $(DL)/$(LIBSO)
+ -@$(RM_F) $(DL)/$(LIBSOMAJ)
+ -@$(RM_F) $(DL)/$(OLDSO)
+ -@$(RM_F) $(DL)/$(OLDSOMAJ)
+ -@$(RM_F) $(DL)/$(OLDSOVER)*
+ cp $(LIBSOVER) $(DL)
+ cp $(OLDSOVER) $(DL)
+ chmod 755 $(DL)/$(LIBSOVER)
+ chmod 755 $(DL)/$(OLDSOVER)
+ (cd $(DL); \
+ $(LN_SF) $(OLDSOVER) $(OLDSOMAJ); \
+ $(LN_SF) $(OLDSOMAJ) $(OLDSO); \
+ $(LN_SF) $(LIBSOVER) $(LIBSOMAJ); \
+ $(LN_SF) $(LIBSOMAJ) $(LIBSO))
+ -@if [ ! -d $(DL)/pkgconfig ]; then $(MKDIR_P) $(DL)/pkgconfig; fi
+ -@$(RM_F) $(DL)/pkgconfig/$(LIBNAME).pc
+ -@$(RM_F) $(DL)/pkgconfig/libpng.pc
+ cp libpng.pc $(DL)/pkgconfig/$(LIBNAME).pc
+ chmod 644 $(DL)/pkgconfig/$(LIBNAME).pc
+ (cd $(DL)/pkgconfig; $(LN_SF) $(LIBNAME).pc libpng.pc)
+
+install-man: libpng.3 libpngpf.3 png.5
+ -@if [ ! -d $(DM) ]; then $(MKDIR_P) $(DM); fi
+ -@if [ ! -d $(DM)/man3 ]; then $(MKDIR_P) $(DM)/man3; fi
+ -@$(RM_F) $(DM)/man3/libpng.3
+ -@$(RM_F) $(DM)/man3/libpngpf.3
+ cp libpng.3 $(DM)/man3
+ cp libpngpf.3 $(DM)/man3
+ -@if [ ! -d $(DM)/man5 ]; then $(MKDIR_P) $(DM)/man5; fi
+ -@$(RM_F) $(DM)/man5/png.5
+ cp png.5 $(DM)/man5
+
+install-config: libpng-config
+ -@if [ ! -d $(DB) ]; then $(MKDIR_P) $(DB); fi
+ -@$(RM_F) $(DB)/libpng-config
+ -@$(RM_F) $(DB)/$(LIBNAME)-config
+ cp libpng-config $(DB)/$(LIBNAME)-config
+ chmod 755 $(DB)/$(LIBNAME)-config
+ (cd $(DB); $(LN_SF) $(LIBNAME)-config libpng-config)
+
+install: install-static install-shared install-man install-config
+
+# If you installed in $(DESTDIR), test-installed won't work until you
+# move the library to its final location. Use test-dd to test it
+# before then.
+
+test-dd:
+ echo
+ echo Testing installed dynamic shared library in $(DL).
+ $(CC) -I$(DI) -I$(ZLIBINC) \
+ `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
+ -L$(DL) -L$(ZLIBLIB) \
+ -rpath $(ZLIBLIB):$(DL) \
+ -o pngtestd `$(BINPATH)/$(LIBNAME)-config --ldflags`
+ ./pngtestd pngtest.png
+
+test-installed:
+ echo
+ echo Testing installed dynamic shared library.
+ $(CC) -I$(ZLIBINC) \
+ `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
+ -L$(ZLIBLIB) \
+ -rpath $(ZLIBLIB):`$(BINPATH)/$(LIBNAME)-config --libdir` \
+ -o pngtesti `$(BINPATH)/$(LIBNAME)-config --ldflags`
+ ./pngtesti pngtest.png
+
+clean:
+ $(RM_F) *.o libpng.a pngtest pngtesti pngout.png libpng.pc libpng-config \
+ $(LIBSO) $(LIBSOMAJ)* \
+ $(OLDSOVER) \
+ so_locations
+
+DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
+writelock:
+ chmod a-w *.[ch35] $(DOCS) scripts/*
+
+# DO NOT DELETE THIS LINE -- make depend depends on it.
+
+png.o: png.h pngconf.h pngpriv.h
+pngerror.o: png.h pngconf.h pngpriv.h
+pngrio.o: png.h pngconf.h pngpriv.h
+pngwio.o: png.h pngconf.h pngpriv.h
+pngmem.o: png.h pngconf.h pngpriv.h
+pngset.o: png.h pngconf.h pngpriv.h
+pngget.o: png.h pngconf.h pngpriv.h
+pngread.o: png.h pngconf.h pngpriv.h
+pngrtran.o: png.h pngconf.h pngpriv.h
+pngrutil.o: png.h pngconf.h pngpriv.h
+pngtrans.o: png.h pngconf.h pngpriv.h
+pngwrite.o: png.h pngconf.h pngpriv.h
+pngwtran.o: png.h pngconf.h pngpriv.h
+pngwutil.o: png.h pngconf.h pngpriv.h
+pngpread.o: png.h pngconf.h pngpriv.h
+
+pngtest.o: png.h pngconf.h
diff --git a/src/3rdparty/libpng/scripts/makefile.so9 b/src/3rdparty/libpng/scripts/makefile.so9
new file mode 100644
index 0000000..fb09b9e
--- /dev/null
+++ b/src/3rdparty/libpng/scripts/makefile.so9
@@ -0,0 +1,254 @@
+# makefile for libpng on Solaris 9 (beta) with Forte cc
+# Updated by Chad Schrock for Solaris 9
+# Contributed by William L. Sebok, based on makefile.linux
+# Copyright (C) 2002, 2006, 2008 Glenn Randers-Pehrson
+# Copyright (C) 1998-2001 Greg Roelofs
+# Copyright (C) 1996-1997 Andreas Dilger
+#
+# This code is released under the libpng license.
+# For conditions of distribution and use, see the disclaimer
+# and license in png.h
+
+# Library name:
+PNGMAJ = 14
+PNGMIN = 1.4.0
+PNGVER = $(PNGMAJ).$(PNGMIN)
+LIBNAME = libpng14
+
+# Shared library names:
+LIBSO=$(LIBNAME).so
+LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
+LIBSOVER=$(LIBNAME).so.$(PNGVER)
+OLDSO=libpng.so
+OLDSOMAJ=libpng.so.14
+OLDSOVER=libpng.so.14.$(PNGMIN)
+
+# Utilities:
+# gcc 2.95 doesn't work.
+CC=cc
+AR_RC=ar rc
+MKDIR_P=mkdir -p
+LN_SF=ln -f -s
+RANLIB=echo
+RM_F=/bin/rm -f
+
+# Where make install puts libpng.a, $(OLDSO)*, and png.h
+prefix=/usr/local
+exec_prefix=$(prefix)
+
+# Where the zlib library and include files are located
+# Changing these to ../zlib poses a security risk. If you want
+# to have zlib in an adjacent directory, specify the full path instead of "..".
+#ZLIBLIB=../zlib
+#ZLIBINC=../zlib
+#ZLIBLIB=/usr/local/lib
+#ZLIBINC=/usr/local/include
+#Use the preinstalled zlib that comes with Solaris 9:
+ZLIBLIB=/usr/lib
+ZLIBINC=/usr/include
+
+#WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
+ -Wmissing-declarations -Wtraditional -Wcast-align \
+ -Wstrict-prototypes -Wmissing-prototypes #-Wconversion
+#CFLAGS=-I$(ZLIBINC) -W -Wall -O3 $(WARNMORE) -g -DPNG_DEBUG=5 -DPNG_NO_MMX_CODE
+CFLAGS=-I$(ZLIBINC) -O3 -DPNG_NO_MMX_CODE
+LDFLAGS=-L. -R. -L$(ZLIBLIB) -R$(ZLIBLIB) -lpng14 -lz -lm
+
+INCPATH=$(prefix)/include
+LIBPATH=$(exec_prefix)/lib
+MANPATH=$(prefix)/man
+BINPATH=$(exec_prefix)/bin
+
+# override DESTDIR= on the make install command line to easily support
+# installing into a temporary location. Example:
+#
+# make install DESTDIR=/tmp/build/libpng
+#
+# If you're going to install into a temporary location
+# via DESTDIR, $(DESTDIR)$(prefix) must already exist before
+# you execute make install.
+DESTDIR=
+
+DB=$(DESTDIR)$(BINPATH)
+DI=$(DESTDIR)$(INCPATH)
+DL=$(DESTDIR)$(LIBPATH)
+DM=$(DESTDIR)$(MANPATH)
+
+OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
+ pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
+ pngwtran.o pngmem.o pngerror.o pngpread.o
+
+OBJSDLL = $(OBJS:.o=.pic.o)
+
+.SUFFIXES: .c .o .pic.o
+
+.c.pic.o:
+ $(CC) -c $(CFLAGS) -KPIC -o $@ $*.c
+
+all: libpng.a $(LIBSO) pngtest libpng.pc libpng-config
+
+libpng.a: $(OBJS)
+ $(AR_RC) $@ $(OBJS)
+ $(RANLIB) $@
+
+libpng.pc:
+ cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
+ -e s!@exec_prefix@!$(exec_prefix)! \
+ -e s!@libdir@!$(LIBPATH)! \
+ -e s!@includedir@!$(INCPATH)! \
+ -e s!-lpng14!-lpng14\ -lz\ -lm! > libpng.pc
+
+libpng-config:
+ ( cat scripts/libpng-config-head.in; \
+ echo prefix=\"$(prefix)\"; \
+ echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
+ echo L_opts=\"-L$(LIBPATH)\"; \
+ echo R_opts=\"-R$(LIBPATH)\"; \
+ echo libs=\"-lpng14 -lz -lm\"; \
+ cat scripts/libpng-config-body.in ) > libpng-config
+ chmod +x libpng-config
+
+$(LIBSO): $(LIBSOMAJ)
+ $(LN_SF) $(LIBSOMAJ) $(LIBSO)
+
+$(LIBSOMAJ): $(LIBSOVER)
+ $(LN_SF) $(LIBSOVER) $(LIBSOMAJ)
+
+$(LIBSOVER): $(OBJSDLL)
+ @case "`type ld`" in *ucb*) \
+ echo; \
+ echo '## WARNING:'; \
+ echo '## The commands "CC" and "LD" must NOT refer to /usr/ucb/cc'; \
+ echo '## and /usr/ucb/ld. If they do, you need to adjust your PATH'; \
+ echo '## environment variable to put /usr/ccs/bin ahead of /usr/ucb.'; \
+ echo '## The environment variable LD_LIBRARY_PATH should not be set'; \
+ echo '## at all. If it is, things are likely to break because of'; \
+ echo '## the libucb dependency that is created.'; \
+ echo; \
+ ;; \
+ esac
+ $(LD) -G -h $(LIBSOMAJ) \
+ -o $(LIBSOVER) $(OBJSDLL)
+
+$(OLDSOVER): $(OBJS)
+ $(LD) -G -h $(OLDSOMAJ) \
+ -o $(OLDSOVER) $(OBJSDLL)
+
+pngtest: pngtest.o $(LIBSO)
+ $(CC) -o pngtest $(CFLAGS) pngtest.o $(LDFLAGS)
+
+test: pngtest
+ ./pngtest
+
+install-headers: png.h pngconf.h
+ -@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
+ -@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
+ cp png.h pngconf.h $(DI)/$(LIBNAME)
+ chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h
+ -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h
+ -@$(RM_F) $(DI)/libpng
+ (cd $(DI); $(LN_SF) $(LIBNAME) libpng; $(LN_SF) $(LIBNAME)/* .)
+
+install-static: install-headers libpng.a
+ -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
+ cp libpng.a $(DL)/$(LIBNAME).a
+ chmod 644 $(DL)/$(LIBNAME).a
+ -@$(RM_F) $(DL)/libpng.a
+ (cd $(DL); $(LN_SF) $(LIBNAME).a libpng.a)
+
+install-shared: install-headers $(LIBSOVER) libpng.pc \
+ $(OLDSOVER)
+ -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
+ -@$(RM_F) $(DL)/$(LIBSOVER)* $(DL)/$(LIBSO)
+ -@$(RM_F) $(DL)/$(LIBSOMAJ)
+ -@$(RM_F) $(DL)/$(OLDSO)
+ -@$(RM_F) $(DL)/$(OLDSOMAJ)
+ -@$(RM_F) $(DL)/$(OLDSOVER)*
+ cp $(LIBSOVER) $(DL)
+ cp $(OLDSOVER) $(DL)
+ chmod 755 $(DL)/$(LIBSOVER)
+ chmod 755 $(DL)/$(OLDSOVER)
+ (cd $(DL); \
+ $(LN_SF) $(OLDSOVER) $(OLDSOMAJ); \
+ $(LN_SF) $(OLDSOMAJ) $(OLDSO); \
+ $(LN_SF) $(LIBSOVER) $(LIBSOMAJ); \
+ $(LN_SF) $(LIBSOMAJ) $(LIBSO))
+ -@if [ ! -d $(DL)/pkgconfig ]; then $(MKDIR_P) $(DL)/pkgconfig; fi
+ -@$(RM_F) $(DL)/pkgconfig/$(LIBNAME).pc
+ -@$(RM_F) $(DL)/pkgconfig/libpng.pc
+ cp libpng.pc $(DL)/pkgconfig/$(LIBNAME).pc
+ chmod 644 $(DL)/pkgconfig/$(LIBNAME).pc
+ (cd $(DL)/pkgconfig; $(LN_SF) $(LIBNAME).pc libpng.pc)
+
+install-man: libpng.3 libpngpf.3 png.5
+ -@if [ ! -d $(DM) ]; then $(MKDIR_P) $(DM); fi
+ -@if [ ! -d $(DM)/man3 ]; then $(MKDIR_P) $(DM)/man3; fi
+ -@$(RM_F) $(DM)/man3/libpng.3
+ -@$(RM_F) $(DM)/man3/libpngpf.3
+ cp libpng.3 $(DM)/man3
+ cp libpngpf.3 $(DM)/man3
+ -@if [ ! -d $(DM)/man5 ]; then $(MKDIR_P) $(DM)/man5; fi
+ -@$(RM_F) $(DM)/man5/png.5
+ cp png.5 $(DM)/man5
+
+install-config: libpng-config
+ -@if [ ! -d $(DB) ]; then $(MKDIR_P) $(DB); fi
+ -@$(RM_F) $(DB)/libpng-config
+ -@$(RM_F) $(DB)/$(LIBNAME)-config
+ cp libpng-config $(DB)/$(LIBNAME)-config
+ chmod 755 $(DB)/$(LIBNAME)-config
+ (cd $(DB); $(LN_SF) $(LIBNAME)-config libpng-config)
+
+install: install-static install-shared install-man install-config
+
+# If you installed in $(DESTDIR), test-installed won't work until you
+# move the library to its final location. Use test-dd to test it
+# before then.
+
+test-dd:
+ echo
+ echo Testing installed dynamic shared library in $(DL).
+ $(CC) -I$(DI) -I$(ZLIBINC) \
+ `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
+ -o pngtestd `$(BINPATH)/$(LIBNAME)-config --ldflags` \
+ -L$(DL) -L$(ZLIBLIB) -R$(ZLIBLIB) -R$(DL)
+ ./pngtestd pngtest.png
+
+test-installed:
+ echo
+ echo Testing installed dynamic shared library.
+ $(CC) -I$(ZLIBINC) \
+ `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
+ -o pngtesti `$(BINPATH)/$(LIBNAME)-config --ldflags` \
+ -L$(ZLIBLIB) -R$(ZLIBLIB)
+ ./pngtesti pngtest.png
+
+clean:
+ $(RM_F) *.o libpng.a pngtest pngtesti pngout.png \
+ libpng-config $(LIBSO) $(LIBSOMAJ)* \
+ $(OLDSOVER) \
+ libpng.pc
+
+DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
+writelock:
+ chmod a-w *.[ch35] $(DOCS) scripts/*
+
+# DO NOT DELETE THIS LINE -- make depend depends on it.
+
+png.o png.pic.o: png.h pngconf.h pngpriv.h
+pngerror.o pngerror.pic.o: png.h pngconf.h pngpriv.h
+pngrio.o pngrio.pic.o: png.h pngconf.h pngpriv.h
+pngwio.o pngwio.pic.o: png.h pngconf.h pngpriv.h
+pngmem.o pngmem.pic.o: png.h pngconf.h pngpriv.h
+pngset.o pngset.pic.o: png.h pngconf.h pngpriv.h
+pngget.o pngget.pic.o: png.h pngconf.h pngpriv.h
+pngread.o pngread.pic.o: png.h pngconf.h pngpriv.h
+pngrtran.o pngrtran.pic.o: png.h pngconf.h pngpriv.h
+pngrutil.o pngrutil.pic.o: png.h pngconf.h pngpriv.h
+pngtrans.o pngtrans.pic.o: png.h pngconf.h pngpriv.h
+pngwrite.o pngwrite.pic.o: png.h pngconf.h pngpriv.h
+pngwtran.o pngwtran.pic.o: png.h pngconf.h pngpriv.h
+pngwutil.o pngwutil.pic.o: png.h pngconf.h pngpriv.h
+pngpread.o pngpread.pic.o: png.h pngconf.h pngpriv.h
+
+pngtest.o: png.h pngconf.h
diff --git a/src/3rdparty/libpng/scripts/makefile.solaris b/src/3rdparty/libpng/scripts/makefile.solaris
new file mode 100644
index 0000000..6c4adfc
--- /dev/null
+++ b/src/3rdparty/libpng/scripts/makefile.solaris
@@ -0,0 +1,251 @@
+# makefile for libpng on Solaris 2.x with gcc
+# Copyright (C) 2004, 2006-2008 Glenn Randers-Pehrson
+# Contributed by William L. Sebok, based on makefile.linux
+# Copyright (C) 1998 Greg Roelofs
+# Copyright (C) 1996, 1997 Andreas Dilger
+#
+# This code is released under the libpng license.
+# For conditions of distribution and use, see the disclaimer
+# and license in png.h
+
+# Library name:
+LIBNAME = libpng14
+PNGMAJ = 14
+PNGMIN = 1.4.0
+PNGVER = $(PNGMAJ).$(PNGMIN)
+
+# Shared library names:
+LIBSO=$(LIBNAME).so
+LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
+LIBSOVER=$(LIBNAME).so.$(PNGVER)
+OLDSO=libpng.so
+OLDSOMAJ=libpng.so.14
+OLDSOVER=libpng.so.14.$(PNGMIN)
+
+# Utilities:
+AR_RC=ar rc
+CC=gcc
+MKDIR_P=mkdir -p
+LN_SF=ln -f -s
+RANLIB=echo
+RM_F=/bin/rm -f
+
+# Where make install puts libpng.a, libpng14.so*, and png.h
+prefix=/usr/local
+exec_prefix=$(prefix)
+
+# Where the zlib library and include files are located
+# Changing these to ../zlib poses a security risk. If you want
+# to have zlib in an adjacent directory, specify the full path instead of "..".
+#ZLIBLIB=../zlib
+#ZLIBINC=../zlib
+
+ZLIBLIB=/usr/local/lib
+ZLIBINC=/usr/local/include
+
+WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
+ -Wmissing-declarations -Wtraditional -Wcast-align \
+ -Wstrict-prototypes -Wmissing-prototypes #-Wconversion
+CFLAGS=-I$(ZLIBINC) -W -Wall -O \
+ # $(WARNMORE) -g -DPNG_DEBUG=5
+LDFLAGS=-L. -R. -L$(ZLIBLIB) -R$(ZLIBLIB) -lpng14 -lz -lm
+
+INCPATH=$(prefix)/include
+LIBPATH=$(exec_prefix)/lib
+MANPATH=$(prefix)/man
+BINPATH=$(exec_prefix)/bin
+
+# override DESTDIR= on the make install command line to easily support
+# installing into a temporary location. Example:
+#
+# make install DESTDIR=/tmp/build/libpng
+#
+# If you're going to install into a temporary location
+# via DESTDIR, $(DESTDIR)$(prefix) must already exist before
+# you execute make install.
+DESTDIR=
+
+DB=$(DESTDIR)$(BINPATH)
+DI=$(DESTDIR)$(INCPATH)
+DL=$(DESTDIR)$(LIBPATH)
+DM=$(DESTDIR)$(MANPATH)
+
+OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
+ pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
+ pngwtran.o pngmem.o pngerror.o pngpread.o
+
+OBJSDLL = $(OBJS:.o=.pic.o)
+
+.SUFFIXES: .c .o .pic.o
+
+.c.pic.o:
+ $(CC) -c $(CFLAGS) -fPIC -o $@ $*.c
+
+all: libpng.a $(LIBSO) pngtest libpng.pc libpng-config
+
+libpng.a: $(OBJS)
+ $(AR_RC) $@ $(OBJS)
+ $(RANLIB) $@
+
+libpng.pc:
+ cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
+ -e s!@exec_prefix@!$(exec_prefix)! \
+ -e s!@libdir@!$(LIBPATH)! \
+ -e s!@includedir@!$(INCPATH)! \
+ -e s!-lpng14!-lpng14\ -lz\ -lm! > libpng.pc
+
+libpng-config:
+ ( cat scripts/libpng-config-head.in; \
+ echo prefix=\"$(prefix)\"; \
+ echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
+ echo cppflags=\"\"; \
+ echo L_opts=\"-L$(LIBPATH)\"; \
+ echo R_opts=\"-R$(LIBPATH)\"; \
+ echo libs=\"-lpng14 -lz -lm\"; \
+ cat scripts/libpng-config-body.in ) > libpng-config
+ chmod +x libpng-config
+
+$(LIBSO): $(LIBSOMAJ)
+ $(LN_SF) $(LIBSOMAJ) $(LIBSO)
+
+$(LIBSOMAJ): $(LIBSOVER)
+ $(LN_SF) $(LIBSOVER) $(LIBSOMAJ)
+
+$(LIBSOVER): $(OBJSDLL)
+ @case "`type ld`" in *ucb*) \
+ echo; \
+ echo '## WARNING:'; \
+ echo '## The commands "CC" and "LD" must NOT refer to /usr/ucb/cc'; \
+ echo '## and /usr/ucb/ld. If they do, you need to adjust your PATH'; \
+ echo '## environment variable to put /usr/ccs/bin ahead of /usr/ucb.'; \
+ echo '## The environment variable LD_LIBRARY_PATH should not be set'; \
+ echo '## at all. If it is, things are likely to break because of'; \
+ echo '## the libucb dependency that is created.'; \
+ echo; \
+ ;; \
+ esac
+ $(LD) -G -h $(LIBSOMAJ) \
+ -o $(LIBSOVER) $(OBJSDLL)
+
+$(OLDSOVER): $(OBJS)
+ $(LD) -G -h $(OLDSOMAJ) \
+ -o $(OLDSOVER) $(OBJSDLL)
+
+pngtest: pngtest.o $(LIBSO)
+ $(CC) -o pngtest $(CFLAGS) pngtest.o $(LDFLAGS)
+
+test: pngtest
+ ./pngtest
+
+install-headers: png.h pngconf.h
+ -@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
+ -@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
+ cp png.h pngconf.h $(DI)/$(LIBNAME)
+ chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h
+ -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h
+ -@$(RM_F) $(DI)/libpng
+ (cd $(DI); $(LN_SF) $(LIBNAME) libpng; $(LN_SF) $(LIBNAME)/* .)
+
+install-static: install-headers libpng.a
+ -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
+ cp libpng.a $(DL)/$(LIBNAME).a
+ chmod 644 $(DL)/$(LIBNAME).a
+ -@$(RM_F) $(DL)/libpng.a
+ (cd $(DL); $(LN_SF) $(LIBNAME).a libpng.a)
+
+install-shared: install-headers $(LIBSOVER) libpng.pc \
+ $(OLDSOVER)
+ -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
+ -@$(RM_F) $(DL)/$(LIBSOVER)* $(DL)/$(LIBSO)
+ -@$(RM_F) $(DL)/$(LIBSOMAJ)
+ -@$(RM_F) $(DL)/$(OLDSO)
+ -@$(RM_F) $(DL)/$(OLDSOMAJ)
+ -@$(RM_F) $(DL)/$(OLDSOVER)*
+ cp $(LIBSOVER) $(DL)
+ cp $(OLDSOVER) $(DL)
+ chmod 755 $(DL)/$(LIBSOVER)
+ chmod 755 $(DL)/$(OLDSOVER)
+ (cd $(DL); \
+ $(LN_SF) $(OLDSOVER) $(OLDSOMAJ); \
+ $(LN_SF) $(OLDSOMAJ) $(OLDSO); \
+ $(LN_SF) $(LIBSOVER) $(LIBSO); \
+ $(LN_SF) $(LIBSOVER) $(LIBSOMAJ))
+ -@if [ ! -d $(DL)/pkgconfig ]; then $(MKDIR_P) $(DL)/pkgconfig; fi
+ -@$(RM_F) $(DL)/pkgconfig/$(LIBNAME).pc
+ -@$(RM_F) $(DL)/pkgconfig/libpng.pc
+ cp libpng.pc $(DL)/pkgconfig/$(LIBNAME).pc
+ chmod 644 $(DL)/pkgconfig/$(LIBNAME).pc
+ (cd $(DL)/pkgconfig; $(LN_SF) $(LIBNAME).pc libpng.pc)
+
+install-man: libpng.3 libpngpf.3 png.5
+ -@if [ ! -d $(DM) ]; then $(MKDIR_P) $(DM); fi
+ -@if [ ! -d $(DM)/man3 ]; then $(MKDIR_P) $(DM)/man3; fi
+ -@$(RM_F) $(DM)/man3/libpng.3
+ -@$(RM_F) $(DM)/man3/libpngpf.3
+ cp libpng.3 $(DM)/man3
+ cp libpngpf.3 $(DM)/man3
+ -@if [ ! -d $(DM)/man5 ]; then $(MKDIR_P) $(DM)/man5; fi
+ -@$(RM_F) $(DM)/man5/png.5
+ cp png.5 $(DM)/man5
+
+install-config: libpng-config
+ -@if [ ! -d $(DB) ]; then $(MKDIR_P) $(DB); fi
+ -@$(RM_F) $(DB)/libpng-config
+ -@$(RM_F) $(DB)/$(LIBNAME)-config
+ cp libpng-config $(DB)/$(LIBNAME)-config
+ chmod 755 $(DB)/$(LIBNAME)-config
+ (cd $(DB); $(LN_SF) $(LIBNAME)-config libpng-config)
+
+install: install-static install-shared install-man install-config
+
+# If you installed in $(DESTDIR), test-installed won't work until you
+# move the library to its final location. Use test-dd to test it
+# before then.
+
+test-dd:
+ echo
+ echo Testing installed dynamic shared library in $(DL).
+ $(CC) -I$(DI) -I$(ZLIBINC) \
+ `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
+ -o pngtestd `$(BINPATH)/$(LIBNAME)-config --ldflags` \
+ -L$(DL) -L$(ZLIBLIB) -R$(ZLIBLIB) -R$(DL)
+ ./pngtestd pngtest.png
+
+test-installed:
+ echo
+ echo Testing installed dynamic shared library.
+ $(CC) -I$(ZLIBINC) \
+ `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
+ -o pngtesti `$(BINPATH)/$(LIBNAME)-config --ldflags` \
+ -L$(ZLIBLIB) -R$(ZLIBLIB)
+ ./pngtesti pngtest.png
+
+clean:
+ $(RM_F) *.o libpng.a pngtest pngtesti pngout.png \
+ libpng-config $(LIBSO) $(LIBSOMAJ)* \
+ $(OLDSOVER) \
+ libpng.pc
+
+DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
+writelock:
+ chmod a-w *.[ch35] $(DOCS) scripts/*
+
+# DO NOT DELETE THIS LINE -- make depend depends on it.
+
+png.o png.pic.o: png.h pngconf.h pngpriv.h
+pngerror.o pngerror.pic.o: png.h pngconf.h pngpriv.h
+pngrio.o pngrio.pic.o: png.h pngconf.h pngpriv.h
+pngwio.o pngwio.pic.o: png.h pngconf.h pngpriv.h
+pngmem.o pngmem.pic.o: png.h pngconf.h pngpriv.h
+pngset.o pngset.pic.o: png.h pngconf.h pngpriv.h
+pngget.o pngget.pic.o: png.h pngconf.h pngpriv.h
+pngread.o pngread.pic.o: png.h pngconf.h pngpriv.h
+pngrtran.o pngrtran.pic.o: png.h pngconf.h pngpriv.h
+pngrutil.o pngrutil.pic.o: png.h pngconf.h pngpriv.h
+pngtrans.o pngtrans.pic.o: png.h pngconf.h pngpriv.h
+pngwrite.o pngwrite.pic.o: png.h pngconf.h pngpriv.h
+pngwtran.o pngwtran.pic.o: png.h pngconf.h pngpriv.h
+pngwutil.o pngwutil.pic.o: png.h pngconf.h pngpriv.h
+pngpread.o pngpread.pic.o: png.h pngconf.h pngpriv.h
+
+pngtest.o: png.h pngconf.h
diff --git a/src/3rdparty/libpng/scripts/makefile.solaris-x86 b/src/3rdparty/libpng/scripts/makefile.solaris-x86
new file mode 100644
index 0000000..8ee7be1
--- /dev/null
+++ b/src/3rdparty/libpng/scripts/makefile.solaris-x86
@@ -0,0 +1,251 @@
+# makefile for libpng on Solaris 2.x with gcc
+# Copyright (C) 2004, 2006-2008 Glenn Randers-Pehrson
+# Contributed by William L. Sebok, based on makefile.linux
+# Copyright (C) 1998 Greg Roelofs
+# Copyright (C) 1996, 1997 Andreas Dilger
+
+# This code is released under the libpng license.
+# For conditions of distribution and use, see the disclaimer
+# and license in png.h
+
+# Library name:
+LIBNAME = libpng14
+PNGMAJ = 14
+PNGMIN = 1.4.0
+PNGVER = $(PNGMAJ).$(PNGMIN)
+
+# Shared library names:
+LIBSO=$(LIBNAME).so
+LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
+LIBSOVER=$(LIBNAME).so.$(PNGVER)
+OLDSO=libpng.so
+OLDSOMAJ=libpng.so.14
+OLDSOVER=libpng.so.14.$(PNGMIN)
+
+# Utilities:
+AR_RC=ar rc
+CC=gcc
+MKDIR_P=mkdir -p
+LN_SF=ln -f -s
+RANLIB=echo
+RM_F=/bin/rm -f
+
+# Where make install puts libpng.a, libpng14.so*, and png.h
+prefix=/usr/local
+exec_prefix=$(prefix)
+
+# Where the zlib library and include files are located
+# Changing these to ../zlib poses a security risk. If you want
+# to have zlib in an adjacent directory, specify the full path instead of "..".
+#ZLIBLIB=../zlib
+#ZLIBINC=../zlib
+
+ZLIBLIB=/usr/local/lib
+ZLIBINC=/usr/local/include
+
+WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
+ -Wmissing-declarations -Wtraditional -Wcast-align \
+ -Wstrict-prototypes -Wmissing-prototypes #-Wconversion
+CFLAGS=-I$(ZLIBINC) -W -Wall -O \
+ # $(WARNMORE) -g -DPNG_DEBUG=5
+LDFLAGS=-L. -R. -L$(ZLIBLIB) -R$(ZLIBLIB) -lpng14 -lz -lm
+
+INCPATH=$(prefix)/include
+LIBPATH=$(exec_prefix)/lib
+MANPATH=$(prefix)/man
+BINPATH=$(exec_prefix)/bin
+
+# override DESTDIR= on the make install command line to easily support
+# installing into a temporary location. Example:
+#
+# make install DESTDIR=/tmp/build/libpng
+#
+# If you're going to install into a temporary location
+# via DESTDIR, $(DESTDIR)$(prefix) must already exist before
+# you execute make install.
+DESTDIR=
+
+DB=$(DESTDIR)$(BINPATH)
+DI=$(DESTDIR)$(INCPATH)
+DL=$(DESTDIR)$(LIBPATH)
+DM=$(DESTDIR)$(MANPATH)
+
+OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
+ pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
+ pngwtran.o pngmem.o pngerror.o pngpread.o
+
+OBJSDLL = $(OBJS:.o=.pic.o)
+
+.SUFFIXES: .c .o .pic.o
+
+.c.pic.o:
+ $(CC) -c $(CFLAGS) -fPIC -o $@ $*.c
+
+all: libpng.a $(LIBSO) pngtest libpng.pc libpng-config
+
+libpng.a: $(OBJS)
+ $(AR_RC) $@ $(OBJS)
+ $(RANLIB) $@
+
+libpng.pc:
+ cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
+ -e s!@exec_prefix@!$(exec_prefix)! \
+ -e s!@libdir@!$(LIBPATH)! \
+ -e s!@includedir@!$(INCPATH)! \
+ -e s!-lpng14!-lpng14\ -lz\ -lm! > libpng.pc
+
+libpng-config:
+ ( cat scripts/libpng-config-head.in; \
+ echo prefix=\"$(prefix)\"; \
+ echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
+ echo cppflags=\""; \
+ echo L_opts=\"-L$(LIBPATH)\"; \
+ echo R_opts=\"-R$(LIBPATH)\"; \
+ echo libs=\"-lpng14 -lz -lm\"; \
+ cat scripts/libpng-config-body.in ) > libpng-config
+ chmod +x libpng-config
+
+$(LIBSO): $(LIBSOMAJ)
+ $(LN_SF) $(LIBSOMAJ) $(LIBSO)
+
+$(LIBSOMAJ): $(LIBSOVER)
+ $(LN_SF) $(LIBSOVER) $(LIBSOMAJ)
+
+$(LIBSOVER): $(OBJSDLL)
+ @case "`type ld`" in *ucb*) \
+ echo; \
+ echo '## WARNING:'; \
+ echo '## The commands "CC" and "LD" must NOT refer to /usr/ucb/cc'; \
+ echo '## and /usr/ucb/ld. If they do, you need to adjust your PATH'; \
+ echo '## environment variable to put /usr/ccs/bin ahead of /usr/ucb.'; \
+ echo '## The environment variable LD_LIBRARY_PATH should not be set'; \
+ echo '## at all. If it is, things are likely to break because of'; \
+ echo '## the libucb dependency that is created.'; \
+ echo; \
+ ;; \
+ esac
+ $(LD) -G -h $(LIBSOMAJ) \
+ -o $(LIBSOVER) $(OBJSDLL)
+
+$(OLDSOVER): $(OBJS)
+ $(LD) -G -h $(OLDSOMAJ) \
+ -o $(OLDSOVER) $(OBJSDLL)
+
+pngtest: pngtest.o $(LIBSO)
+ $(CC) -o pngtest $(CFLAGS) pngtest.o $(LDFLAGS)
+
+test: pngtest
+ ./pngtest
+
+install-headers: png.h pngconf.h
+ -@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
+ -@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
+ cp png.h pngconf.h $(DI)/$(LIBNAME)
+ chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h
+ -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h
+ -@$(RM_F) $(DI)/libpng
+ (cd $(DI); $(LN_SF) $(LIBNAME) libpng; $(LN_SF) $(LIBNAME)/* .)
+
+install-static: install-headers libpng.a
+ -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
+ cp libpng.a $(DL)/$(LIBNAME).a
+ chmod 644 $(DL)/$(LIBNAME).a
+ -@$(RM_F) $(DL)/libpng.a
+ (cd $(DL); $(LN_SF) $(LIBNAME).a libpng.a)
+
+install-shared: install-headers $(LIBSOVER) libpng.pc \
+ $(OLDSOVER)
+ -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
+ -@$(RM_F) $(DL)/$(LIBSOVER)* $(DL)/$(LIBSO)
+ -@$(RM_F) $(DL)/$(LIBSOMAJ)
+ -@$(RM_F) $(DL)/$(OLDSO)
+ -@$(RM_F) $(DL)/$(OLDSOMAJ)
+ -@$(RM_F) $(DL)/$(OLDSOVER)*
+ cp $(LIBSOVER) $(DL)
+ cp $(OLDSOVER) $(DL)
+ chmod 755 $(DL)/$(LIBSOVER)
+ chmod 755 $(DL)/$(OLDSOVER)
+ (cd $(DL); \
+ $(LN_SF) $(OLDSOVER) $(OLDSOMAJ); \
+ $(LN_SF) $(OLDSOMAJ) $(OLDSO); \
+ $(LN_SF) $(LIBSOVER) $(LIBSO); \
+ $(LN_SF) $(LIBSOVER) $(LIBSOMAJ))
+ -@if [ ! -d $(DL)/pkgconfig ]; then $(MKDIR_P) $(DL)/pkgconfig; fi
+ -@$(RM_F) $(DL)/pkgconfig/$(LIBNAME).pc
+ -@$(RM_F) $(DL)/pkgconfig/libpng.pc
+ cp libpng.pc $(DL)/pkgconfig/$(LIBNAME).pc
+ chmod 644 $(DL)/pkgconfig/$(LIBNAME).pc
+ (cd $(DL)/pkgconfig; $(LN_SF) $(LIBNAME).pc libpng.pc)
+
+install-man: libpng.3 libpngpf.3 png.5
+ -@if [ ! -d $(DM) ]; then $(MKDIR_P) $(DM); fi
+ -@if [ ! -d $(DM)/man3 ]; then $(MKDIR_P) $(DM)/man3; fi
+ -@$(RM_F) $(DM)/man3/libpng.3
+ -@$(RM_F) $(DM)/man3/libpngpf.3
+ cp libpng.3 $(DM)/man3
+ cp libpngpf.3 $(DM)/man3
+ -@if [ ! -d $(DM)/man5 ]; then $(MKDIR_P) $(DM)/man5; fi
+ -@$(RM_F) $(DM)/man5/png.5
+ cp png.5 $(DM)/man5
+
+install-config: libpng-config
+ -@if [ ! -d $(DB) ]; then $(MKDIR_P) $(DB); fi
+ -@$(RM_F) $(DB)/libpng-config
+ -@$(RM_F) $(DB)/$(LIBNAME)-config
+ cp libpng-config $(DB)/$(LIBNAME)-config
+ chmod 755 $(DB)/$(LIBNAME)-config
+ (cd $(DB); $(LN_SF) $(LIBNAME)-config libpng-config)
+
+install: install-static install-shared install-man install-config
+
+# If you installed in $(DESTDIR), test-installed won't work until you
+# move the library to its final location. Use test-dd to test it
+# before then.
+
+test-dd:
+ echo
+ echo Testing installed dynamic shared library in $(DL).
+ $(CC) -I$(DI) -I$(ZLIBINC) \
+ `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
+ -o pngtestd `$(BINPATH)/$(LIBNAME)-config --ldflags` \
+ -L$(DL) -L$(ZLIBLIB) -R$(ZLIBLIB) -R$(DL)
+ ./pngtestd pngtest.png
+
+test-installed:
+ echo
+ echo Testing installed dynamic shared library.
+ $(CC) -I$(ZLIBINC) \
+ `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
+ -o pngtesti `$(BINPATH)/$(LIBNAME)-config --ldflags` \
+ -L$(ZLIBLIB) -R$(ZLIBLIB)
+ ./pngtesti pngtest.png
+
+clean:
+ $(RM_F) *.o libpng.a pngtest pngtesti pngout.png \
+ libpng-config $(LIBSO) $(LIBSOMAJ)* \
+ $(OLDSOVER) \
+ libpng.pc
+
+DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
+writelock:
+ chmod a-w *.[ch35] $(DOCS) scripts/*
+
+# DO NOT DELETE THIS LINE -- make depend depends on it.
+
+png.o png.pic.o: png.h pngconf.h pngpriv.h
+pngerror.o pngerror.pic.o: png.h pngconf.h pngpriv.h
+pngrio.o pngrio.pic.o: png.h pngconf.h pngpriv.h
+pngwio.o pngwio.pic.o: png.h pngconf.h pngpriv.h
+pngmem.o pngmem.pic.o: png.h pngconf.h pngpriv.h
+pngset.o pngset.pic.o: png.h pngconf.h pngpriv.h
+pngget.o pngget.pic.o: png.h pngconf.h pngpriv.h
+pngread.o pngread.pic.o: png.h pngconf.h pngpriv.h
+pngrtran.o pngrtran.pic.o: png.h pngconf.h pngpriv.h
+pngrutil.o pngrutil.pic.o: png.h pngconf.h pngpriv.h
+pngtrans.o pngtrans.pic.o: png.h pngconf.h pngpriv.h
+pngwrite.o pngwrite.pic.o: png.h pngconf.h pngpriv.h
+pngwtran.o pngwtran.pic.o: png.h pngconf.h pngpriv.h
+pngwutil.o pngwutil.pic.o: png.h pngconf.h pngpriv.h
+pngpread.o pngpread.pic.o: png.h pngconf.h pngpriv.h
+
+pngtest.o: png.h pngconf.h
diff --git a/src/3rdparty/libpng/scripts/makefile.std b/src/3rdparty/libpng/scripts/makefile.std
new file mode 100644
index 0000000..afb885a
--- /dev/null
+++ b/src/3rdparty/libpng/scripts/makefile.std
@@ -0,0 +1,95 @@
+# makefile for libpng
+# Copyright (C) 2002, 2006 Glenn Randers-Pehrson
+# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
+#
+# This code is released under the libpng license.
+# For conditions of distribution and use, see the disclaimer
+# and license in png.h
+
+# where make install puts libpng.a and png.h
+prefix=/usr/local
+INCPATH=$(prefix)/include
+LIBPATH=$(prefix)/lib
+
+# override DESTDIR= on the make install command line to easily support
+# installing into a temporary location. Example:
+#
+# make install DESTDIR=/tmp/build/libpng
+#
+# If you're going to install into a temporary location
+# via DESTDIR, $(DESTDIR)$(prefix) must already exist before
+# you execute make install.
+DESTDIR=
+
+# Where the zlib library and include files are located
+#ZLIBLIB=/usr/local/lib
+#ZLIBINC=/usr/local/include
+ZLIBLIB=../zlib
+ZLIBINC=../zlib
+
+CC=cc
+AR_RC=ar rc
+MKDIR_P=mkdir
+LN_SF=ln -sf
+RANLIB=ranlib
+RM_F=rm -f
+
+CFLAGS=-I$(ZLIBINC) -O # -g -DPNG_DEBUG=5
+LDFLAGS=-L. -L$(ZLIBLIB) -lpng -lz -lm
+
+OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
+ pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
+ pngwtran.o pngmem.o pngerror.o pngpread.o
+
+all: libpng.a pngtest
+
+libpng.a: $(OBJS)
+ $(AR_RC) $@ $(OBJS)
+ $(RANLIB) $@
+
+pngtest: pngtest.o libpng.a
+ $(CC) -o pngtest $(CFLAGS) pngtest.o $(LDFLAGS)
+
+test: pngtest
+ ./pngtest
+
+install: libpng.a
+ -@$(MKDIR_P) $(DESTDIR)$(INCPATH)
+ -@$(MKDIR_P) $(DESTDIR)$(INCPATH)/libpng
+ -@$(MKDIR_P) $(DESTDIR)$(LIBPATH)
+ -@$(RM_F) $(DESTDIR)$(INCPATH)/png.h
+ -@$(RM_F) $(DESTDIR)$(INCPATH)/pngconf.h
+ cp png.h $(DESTDIR)$(INCPATH)/libpng
+ cp pngconf.h $(DESTDIR)$(INCPATH)/libpng
+ chmod 644 $(DESTDIR)$(INCPATH)/libpng/png.h
+ chmod 644 $(DESTDIR)$(INCPATH)/libpng/pngconf.h
+ (cd $(DESTDIR)$(INCPATH); ln -f -s libpng/* .)
+ cp libpng.a $(DESTDIR)$(LIBPATH)
+ chmod 644 $(DESTDIR)$(LIBPATH)/libpng.a
+
+clean:
+ $(RM_F) *.o libpng.a pngtest pngout.png
+
+DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
+writelock:
+ chmod a-w *.[ch35] $(DOCS) scripts/*
+
+# DO NOT DELETE THIS LINE -- make depend depends on it.
+
+png.o: png.h pngconf.h pngpriv.h
+pngerror.o: png.h pngconf.h pngpriv.h
+pngrio.o: png.h pngconf.h pngpriv.h
+pngwio.o: png.h pngconf.h pngpriv.h
+pngmem.o: png.h pngconf.h pngpriv.h
+pngset.o: png.h pngconf.h pngpriv.h
+pngget.o: png.h pngconf.h pngpriv.h
+pngread.o: png.h pngconf.h pngpriv.h
+pngrtran.o: png.h pngconf.h pngpriv.h
+pngrutil.o: png.h pngconf.h pngpriv.h
+pngtrans.o: png.h pngconf.h pngpriv.h
+pngwrite.o: png.h pngconf.h pngpriv.h
+pngwtran.o: png.h pngconf.h pngpriv.h
+pngwutil.o: png.h pngconf.h pngpriv.h
+pngpread.o: png.h pngconf.h pngpriv.h
+
+pngtest.o: png.h pngconf.h
diff --git a/src/3rdparty/libpng/scripts/makefile.sunos b/src/3rdparty/libpng/scripts/makefile.sunos
new file mode 100644
index 0000000..984379c
--- /dev/null
+++ b/src/3rdparty/libpng/scripts/makefile.sunos
@@ -0,0 +1,100 @@
+# makefile for libpng
+# Copyright (C) 2002, 2006 Glenn Randers-Pehrson
+# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
+#
+# This code is released under the libpng license.
+# For conditions of distribution and use, see the disclaimer
+# and license in png.h
+
+# where make install puts libpng.a and png.h
+prefix=/usr/local
+INCPATH=$(prefix)/include
+LIBPATH=$(prefix)/lib
+
+# override DESTDIR= on the make install command line to easily support
+# installing into a temporary location. Example:
+#
+# make install DESTDIR=/tmp/build/libpng
+#
+# If you're going to install into a temporary location
+# via DESTDIR, $(DESTDIR)$(prefix) must already exist before
+# you execute make install.
+DESTDIR=
+
+# Where the zlib library and include files are located
+#ZLIBLIB=/usr/local/lib
+#ZLIBINC=/usr/local/include
+ZLIBLIB=../zlib
+ZLIBINC=../zlib
+
+
+WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow -Wconversion \
+ -Wmissing-declarations -Wtraditional -Wcast-align \
+ -Wstrict-prototypes -Wmissing-prototypes
+
+CC=gcc
+AR_RC=ar rc
+MKDIR_P=mkdir -p
+LN_SF=ln -f -s
+RANLIB=ranlib
+RM_F=/bin/rm -f
+
+CFLAGS=-I$(ZLIBINC) -O # $(WARNMORE) -DPNG_DEBUG=5
+LDFLAGS=-L. -L$(ZLIBLIB) -lpng -lz -lm
+
+OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
+ pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
+ pngwtran.o pngmem.o pngerror.o pngpread.o
+
+all: libpng.a pngtest
+
+libpng.a: $(OBJS)
+ $(AR_RC) $@ $(OBJS)
+ $(RANLIB) $@
+
+pngtest: pngtest.o libpng.a
+ $(CC) -o pngtest $(CFLAGS) pngtest.o $(LDFLAGS)
+
+test: pngtest
+ ./pngtest
+
+install: libpng.a
+ -@$(MKDIR_P) $(DESTDIR)$(INCPATH)
+ -@$(MKDIR_P) $(DESTDIR)$(INCPATH)/libpng
+ -@$(MKDIR_P) $(DESTDIR)$(LIBPATH)
+ -@$(RM_F) $(DESTDIR)$(INCPATH)/png.h
+ -@$(RM_F) $(DESTDIR)$(INCPATH)/pngconf.h
+ cp png.h $(DESTDIR)$(INCPATH)/libpng
+ cp pngconf.h $(DESTDIR)$(INCPATH)/libpng
+ chmod 644 $(DESTDIR)$(INCPATH)/libpng/png.h
+ chmod 644 $(DESTDIR)$(INCPATH)/libpng/pngconf.h
+ (cd $(DESTDIR)$(INCPATH); $(LN_SF) libpng/* .)
+ cp libpng.a $(DESTDIR)$(LIBPATH)
+ chmod 644 $(DESTDIR)$(LIBPATH)/libpng.a
+
+clean:
+ $(RM_F) *.o libpng.a pngtest pngout.png
+
+DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
+writelock:
+ chmod a-w *.[ch35] $(DOCS) scripts/*
+
+# DO NOT DELETE THIS LINE -- make depend depends on it.
+
+png.o: png.h pngconf.h pngpriv.h
+pngerror.o: png.h pngconf.h pngpriv.h
+pngrio.o: png.h pngconf.h pngpriv.h
+pngwio.o: png.h pngconf.h pngpriv.h
+pngmem.o: png.h pngconf.h pngpriv.h
+pngset.o: png.h pngconf.h pngpriv.h
+pngget.o: png.h pngconf.h pngpriv.h
+pngread.o: png.h pngconf.h pngpriv.h
+pngrtran.o: png.h pngconf.h pngpriv.h
+pngrutil.o: png.h pngconf.h pngpriv.h
+pngtrans.o: png.h pngconf.h pngpriv.h
+pngwrite.o: png.h pngconf.h pngpriv.h
+pngwtran.o: png.h pngconf.h pngpriv.h
+pngwutil.o: png.h pngconf.h pngpriv.h
+pngpread.o: png.h pngconf.h pngpriv.h
+
+pngtest.o: png.h pngconf.h
diff --git a/src/3rdparty/libpng/scripts/makefile.tc3 b/src/3rdparty/libpng/scripts/makefile.tc3
new file mode 100644
index 0000000..bf6ade6
--- /dev/null
+++ b/src/3rdparty/libpng/scripts/makefile.tc3
@@ -0,0 +1,89 @@
+# Makefile for libpng
+# TurboC/C++ (Note: All modules are compiled in C mode)
+
+# To use, do "make -fmakefile.tc3"
+
+# ----- Turbo C 3.00 (can be modified to work with earlier versions) -----
+
+MODEL=l
+CFLAGS=-O2 -Z -m$(MODEL) -I..\zlib
+#CFLAGS=-D_NO_PROTO -O2 -Z -m$(MODEL) -I..\zlib # Turbo C older than 3.00
+CC=tcc
+LD=tcc
+LIB=tlib
+LDFLAGS=-m$(MODEL) -L..\zlib
+O=.obj
+E=.exe
+
+# variables
+OBJS1 = png$(O) pngset$(O) pngget$(O) pngrutil$(O) pngtrans$(O) pngwutil$(O)
+OBJS2 = pngmem$(O) pngpread$(O) pngread$(O) pngerror$(O) pngwrite$(O)
+OBJS3 = pngrtran$(O) pngwtran$(O) pngrio$(O) pngwio$(O)
+OBJSL1 = +png$(O) +pngset$(O) +pngget$(O) +pngrutil$(O) +pngtrans$(O)
+OBJSL2 = +pngwutil$(O) +pngmem$(O) +pngpread$(O) +pngread$(O) +pngerror$(O)
+OBJSL3 = +pngwrite$(O) +pngrtran$(O) +pngwtran$(O) +pngrio$(O) +pngwio$(O)
+
+all: libpng$(MODEL).lib pngtest$(E)
+
+pngtest: pngtest$(E)
+
+test: pngtest$(E)
+ pngtest$(E)
+
+png$(O): png.h pngconf.h pngpriv.h
+ $(CC) -c $(CFLAGS) $*.c
+
+pngset$(O): png.h pngconf.h pngpriv.h
+ $(CC) -c $(CFLAGS) $*.c
+
+pngget$(O): png.h pngconf.h pngpriv.h
+ $(CC) -c $(CFLAGS) $*.c
+
+pngread$(O): png.h pngconf.h pngpriv.h
+ $(CC) -c $(CFLAGS) $*.c
+
+pngpread$(O): png.h pngconf.h pngpriv.h
+ $(CC) -c $(CFLAGS) $*.c
+
+pngrtran$(O): png.h pngconf.h pngpriv.h
+ $(CC) -c $(CFLAGS) $*.c
+
+pngrutil$(O): png.h pngconf.h pngpriv.h
+ $(CC) -c $(CFLAGS) $*.c
+
+pngerror$(O): png.h pngconf.h pngpriv.h
+ $(CC) -c $(CFLAGS) $*.c
+
+pngmem$(O): png.h pngconf.h pngpriv.h
+ $(CC) -c $(CFLAGS) $*.c
+
+pngrio$(O): png.h pngconf.h pngpriv.h
+ $(CC) -c $(CFLAGS) $*.c
+
+pngwio$(O): png.h pngconf.h pngpriv.h
+ $(CC) -c $(CFLAGS) $*.c
+
+pngtest$(O): png.h pngconf.h
+ $(CC) -c $(CFLAGS) $*.c
+
+pngtrans$(O): png.h pngconf.h pngpriv.h
+ $(CC) -c $(CFLAGS) $*.c
+
+pngwrite$(O): png.h pngconf.h pngpriv.h
+ $(CC) -c $(CFLAGS) $*.c
+
+pngwtran$(O): png.h pngconf.h pngpriv.h
+ $(CC) -c $(CFLAGS) $*.c
+
+pngwutil$(O): png.h pngconf.h pngpriv.h
+ $(CC) -c $(CFLAGS) $*.c
+
+libpng$(MODEL).lib: $(OBJS1) $(OBJS2) $(OBJS3)
+ $(LIB) libpng$(MODEL) +$(OBJSL1)
+ $(LIB) libpng$(MODEL) +$(OBJSL2)
+ $(LIB) libpng$(MODEL) +$(OBJSL3)
+
+pngtest$(E): pngtest$(O) libpng$(MODEL).lib
+ $(LD) $(LDFLAGS) pngtest.obj libpng$(MODEL).lib zlib_$(MODEL).lib
+
+# End of makefile for libpng
diff --git a/src/3rdparty/libpng/scripts/makefile.vcwin32 b/src/3rdparty/libpng/scripts/makefile.vcwin32
new file mode 100644
index 0000000..a65f1c1
--- /dev/null
+++ b/src/3rdparty/libpng/scripts/makefile.vcwin32
@@ -0,0 +1,103 @@
+# makefile for libpng
+# Copyright (C) 1998 Tim Wegner
+# Copyright (C) 2006,2009 Glenn Randers-Pehrson
+#
+# This code is released under the libpng license.
+# For conditions of distribution and use, see the disclaimer
+# and license in png.h
+#
+# Assumes that zlib.lib, zconf.h, and zlib.h have been copied to ..\zlib
+# To use, do "nmake /f scripts\makefile.vcwin32"
+
+# -------- Microsoft Visual C++ 2.0 and later, no assembler code --------
+
+# Compiler, linker, librarian, and other tools
+CC = cl
+LD = link
+AR = lib
+CFLAGS = -nologo -MD -O2 -W3 -I..\zlib
+LDFLAGS = -nologo
+ARFLAGS = -nologo
+RM = del
+
+# File extensions
+O=.obj
+
+#uncomment next to put error messages in a file
+#ERRFILE= >> pngerrs.log
+
+# Variables
+OBJS1 = png$(O) pngerror$(O) pngget$(O) pngmem$(O) pngpread$(O)
+OBJS2 = pngread$(O) pngrio$(O) pngrtran$(O) pngrutil$(O) pngset$(O)
+OBJS3 = pngtrans$(O) pngwio$(O) pngwrite$(O) pngwtran$(O) pngwutil$(O)
+OBJS = $(OBJS1) $(OBJS2) $(OBJS3)
+
+# Targets
+all: libpng.lib
+
+png$(O): png.h pngconf.h pngpriv.h
+ $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
+
+pngset$(O): png.h pngconf.h pngpriv.h
+ $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
+
+pngget$(O): png.h pngconf.h pngpriv.h
+ $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
+
+pngread$(O): png.h pngconf.h pngpriv.h
+ $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
+
+pngpread$(O): png.h pngconf.h pngpriv.h
+ $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
+
+pngrtran$(O): png.h pngconf.h pngpriv.h
+ $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
+
+pngrutil$(O): png.h pngconf.h pngpriv.h
+ $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
+
+pngerror$(O): png.h pngconf.h pngpriv.h
+ $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
+
+pngmem$(O): png.h pngconf.h pngpriv.h
+ $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
+
+pngrio$(O): png.h pngconf.h pngpriv.h
+ $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
+
+pngwio$(O): png.h pngconf.h pngpriv.h
+ $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
+
+pngtrans$(O): png.h pngconf.h pngpriv.h
+ $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
+
+pngwrite$(O): png.h pngconf.h pngpriv.h
+ $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
+
+pngwtran$(O): png.h pngconf.h pngpriv.h
+ $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
+
+pngwutil$(O): png.h pngconf.h pngpriv.h
+ $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
+
+libpng.lib: $(OBJS)
+ -$(RM) $@
+ $(AR) $(ARFLAGS) -out:$@ $(OBJS) $(ERRFILE)
+
+pngtest$(O): png.h pngconf.h
+ $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
+
+pngtest.exe: pngtest$(O) libpng.lib
+ $(LD) $(LDFLAGS) -out:$@ pngtest$(O) libpng.lib ..\zlib\zlib.lib $(ERRFILE)
+
+test: pngtest.exe
+ pngtest
+
+clean:
+ -$(RM) *$(O)
+ -$(RM) libpng.lib
+ -$(RM) pngtest.exe
+ -$(RM) pngout.png
+
+# End of makefile for libpng
+
diff --git a/src/3rdparty/libpng/scripts/makefile.watcom b/src/3rdparty/libpng/scripts/makefile.watcom
new file mode 100644
index 0000000..db4d534
--- /dev/null
+++ b/src/3rdparty/libpng/scripts/makefile.watcom
@@ -0,0 +1,112 @@
+# Makefile for libpng
+# Watcom C/C++ 10.0 and later, 32-bit protected mode, flat memory model
+
+# Copyright (C) 2000, Pawel Mrochen, based on makefile.msc which is
+# copyright 1995 Guy Eric Schalnat, Group 42, Inc.
+#
+# This code is released under the libpng license.
+# For conditions of distribution and use, see the disclaimer
+# and license in png.h
+
+# To use, do "wmake /f scripts\makefile.watcom"
+
+
+# ---------------------- Watcom C/C++ 10.0 and later -----------------------
+
+# Where the zlib library and include files are located
+ZLIBLIB=..\zlib
+ZLIBINC=..\zlib
+
+# Target OS
+OS=DOS
+#OS=NT
+
+# Target CPU
+CPU=6 # Pentium Pro
+#CPU=5 # Pentium
+
+# Calling convention
+CALLING=r # registers
+#CALLING=s # stack
+
+# Uncomment next to put error messages in a file
+#ERRFILE=>>pngerrs
+
+# --------------------------------------------------------------------------
+
+
+CC=wcc386
+CFLAGS=-$(CPU)$(CALLING) -fp$(CPU) -fpi87 -oneatx -mf -bt=$(OS) -i=$(ZLIBINC) -zq
+LD=wcl386
+LDFLAGS=-zq
+
+O=.obj
+
+OBJS1=png$(O) pngset$(O) pngget$(O) pngrutil$(O) pngtrans$(O) pngwutil$(O)
+OBJS2=pngmem$(O) pngpread$(O) pngread$(O) pngerror$(O) pngwrite$(O)
+OBJS3=pngrtran$(O) pngwtran$(O) pngrio$(O) pngwio$(O)
+
+
+all: test
+
+png$(O): png.h pngconf.h pngpriv.h
+ $(CC) $(CFLAGS) $*.c $(ERRFILE)
+
+pngset$(O): png.h pngconf.h pngpriv.h
+ $(CC) $(CFLAGS) $*.c $(ERRFILE)
+
+pngget$(O): png.h pngconf.h pngpriv.h
+ $(CC) $(CFLAGS) $*.c $(ERRFILE)
+
+pngread$(O): png.h pngconf.h pngpriv.h
+ $(CC) $(CFLAGS) $*.c $(ERRFILE)
+
+pngpread$(O): png.h pngconf.h pngpriv.h
+ $(CC) $(CFLAGS) $*.c $(ERRFILE)
+
+pngrtran$(O): png.h pngconf.h pngpriv.h
+ $(CC) $(CFLAGS) $*.c $(ERRFILE)
+
+pngrutil$(O): png.h pngconf.h pngpriv.h
+ $(CC) $(CFLAGS) $*.c $(ERRFILE)
+
+pngerror$(O): png.h pngconf.h pngpriv.h
+ $(CC) $(CFLAGS) $*.c $(ERRFILE)
+
+pngmem$(O): png.h pngconf.h pngpriv.h
+ $(CC) $(CFLAGS) $*.c $(ERRFILE)
+
+pngrio$(O): png.h pngconf.h pngpriv.h
+ $(CC) $(CFLAGS) $*.c $(ERRFILE)
+
+pngwio$(O): png.h pngconf.h pngpriv.h
+ $(CC) $(CFLAGS) $*.c $(ERRFILE)
+
+pngtest$(O): png.h pngconf.h
+ $(CC) $(CFLAGS) $*.c $(ERRFILE)
+
+pngtrans$(O): png.h pngconf.h pngpriv.h
+ $(CC) $(CFLAGS) $*.c $(ERRFILE)
+
+pngwrite$(O): png.h pngconf.h pngpriv.h
+ $(CC) $(CFLAGS) $*.c $(ERRFILE)
+
+pngwtran$(O): png.h pngconf.h pngpriv.h
+ $(CC) $(CFLAGS) $*.c $(ERRFILE)
+
+pngwutil$(O): png.h pngconf.h pngpriv.h
+ $(CC) $(CFLAGS) $*.c $(ERRFILE)
+
+libpng.lib: $(OBJS1) $(OBJS2) $(OBJS3)
+ wlib -b -c -n -q libpng.lib $(OBJS1)
+ wlib -b -c -q libpng.lib $(OBJS2)
+ wlib -b -c -q libpng.lib $(OBJS3)
+
+pngtest.exe: pngtest.obj libpng.lib
+ $(LD) $(LDFLAGS) pngtest.obj libpng.lib $(ZLIBLIB)\zlib.lib
+
+test: pngtest.exe .symbolic
+ pngtest.exe
+
+
+# End of makefile for libpng
diff --git a/src/3rdparty/libpng/scripts/makevms.com b/src/3rdparty/libpng/scripts/makevms.com
new file mode 100644
index 0000000..2fa9d0d
--- /dev/null
+++ b/src/3rdparty/libpng/scripts/makevms.com
@@ -0,0 +1,142 @@
+$! make libpng under VMS
+$!
+$!
+$! Check for MMK/MMS
+$!
+$! This procedure accepts one parameter (contrib), which causes it to build
+$! the programs from the contrib directory instead of libpng.
+$!
+$ p1 = f$edit(p1,"UPCASE")
+$ if p1 .eqs. "CONTRIB"
+$ then
+$ set def [.contrib.gregbook]
+$ @makevms
+$ set def [-.pngminus]
+$ @makevms
+$ set def [--]
+$ exit
+$ endif
+$ Make = ""
+$ If F$Search ("Sys$System:MMS.EXE") .nes. "" Then Make = "MMS"
+$ If F$Type (MMK) .eqs. "STRING" Then Make = "MMK"
+$!
+$! Look for the compiler used
+$!
+$ zlibsrc = "[-.zlib]"
+$ ccopt="/include=''zlibsrc'"
+$ if f$getsyi("HW_MODEL").ge.1024
+$ then
+$ ccopt = "/prefix=all"+ccopt
+$ comp = "__decc__=1"
+$ if f$trnlnm("SYS").eqs."" then define sys sys$library:
+$ else
+$ if f$search("SYS$SYSTEM:DECC$COMPILER.EXE").eqs.""
+$ then
+$ if f$trnlnm("SYS").eqs."" then define sys sys$library:
+$ if f$search("SYS$SYSTEM:VAXC.EXE").eqs.""
+$ then
+$ comp = "__gcc__=1"
+$ CC :== GCC
+$ else
+$ comp = "__vaxc__=1"
+$ endif
+$ else
+$ if f$trnlnm("SYS").eqs."" then define sys decc$library_include:
+$ ccopt = "/decc/prefix=all"+ccopt
+$ comp = "__decc__=1"
+$ endif
+$ endif
+$!
+$! Build the thing plain or with mms/mmk
+$!
+$ write sys$output "Compiling Libpng sources ..."
+$ if make.eqs.""
+$ then
+$ dele pngtest.obj;*
+$ CALL MAKE png.OBJ "cc ''CCOPT' png" -
+ png.c png.h pngconf.h pngpriv.h
+$ CALL MAKE pngset.OBJ "cc ''CCOPT' pngset" -
+ pngset.c png.h pngconf.h pngpriv.h
+$ CALL MAKE pngget.OBJ "cc ''CCOPT' pngget" -
+ pngget.c png.h pngconf.h pngpriv.h
+$ CALL MAKE pngread.OBJ "cc ''CCOPT' pngread" -
+ pngread.c png.h pngconf.h pngpriv.h
+$ CALL MAKE pngpread.OBJ "cc ''CCOPT' pngpread" -
+ pngpread.c png.h pngconf.h pngpriv.h
+$ CALL MAKE pngrtran.OBJ "cc ''CCOPT' pngrtran" -
+ pngrtran.c png.h pngconf.h pngpriv.h
+$ CALL MAKE pngrutil.OBJ "cc ''CCOPT' pngrutil" -
+ pngrutil.c png.h pngconf.h pngpriv.h
+$ CALL MAKE pngerror.OBJ "cc ''CCOPT' pngerror" -
+ pngerror.c png.h pngconf.h pngpriv.h
+$ CALL MAKE pngmem.OBJ "cc ''CCOPT' pngmem" -
+ pngmem.c png.h pngconf.h pngpriv.h
+$ CALL MAKE pngrio.OBJ "cc ''CCOPT' pngrio" -
+ pngrio.c png.h pngconf.h pngpriv.h
+$ CALL MAKE pngwio.OBJ "cc ''CCOPT' pngwio" -
+ pngwio.c png.h pngconf.h pngpriv.h
+$ CALL MAKE pngtrans.OBJ "cc ''CCOPT' pngtrans" -
+ pngtrans.c png.h pngconf.h pngpriv.h
+$ CALL MAKE pngwrite.OBJ "cc ''CCOPT' pngwrite" -
+ pngwrite.c png.h pngconf.h pngpriv.h
+$ CALL MAKE pngwtran.OBJ "cc ''CCOPT' pngwtran" -
+ pngwtran.c png.h pngconf.h pngpriv.h
+$ CALL MAKE pngwutil.OBJ "cc ''CCOPT' pngwutil" -
+ pngwutil.c png.h pngconf.h pngpriv.h
+$ write sys$output "Building Libpng ..."
+$ CALL MAKE libpng.OLB "lib/crea libpng.olb *.obj" *.OBJ
+$ write sys$output "Building pngtest..."
+$ CALL MAKE pngtest.OBJ "cc ''CCOPT' pngtest" -
+ pngtest.c png.h pngconf.h
+$ call make pngtest.exe -
+ "LINK pngtest,libpng.olb/lib,''zlibsrc'libz.olb/lib" -
+ pngtest.obj libpng.olb
+$ write sys$output "Testing Libpng..."
+$ run pngtest
+$ else
+$ if f$search("DESCRIP.MMS") .eqs. "" then copy/nolog [.SCRIPTS]DESCRIP.MMS []
+$ 'make'/macro=('comp',zlibsrc='zlibsrc')
+$ endif
+$ write sys$output "Libpng build completed"
+$ exit
+$!
+$!
+$MAKE: SUBROUTINE !SUBROUTINE TO CHECK DEPENDENCIES
+$ V = 'F$Verify(0)
+$! P1 = What we are trying to make
+$! P2 = Command to make it
+$! P3 - P8 What it depends on
+$
+$ If F$Search(P1) .Eqs. "" Then Goto Makeit
+$ Time = F$CvTime(F$File(P1,"RDT"))
+$arg=3
+$Loop:
+$ Argument = P'arg
+$ If Argument .Eqs. "" Then Goto Exit
+$ El=0
+$Loop2:
+$ File = F$Element(El," ",Argument)
+$ If File .Eqs. " " Then Goto Endl
+$ AFile = ""
+$Loop3:
+$ OFile = AFile
+$ AFile = F$Search(File)
+$ If AFile .Eqs. "" .Or. AFile .Eqs. OFile Then Goto NextEl
+$ If F$CvTime(F$File(AFile,"RDT")) .Ges. Time Then Goto Makeit
+$ Goto Loop3
+$NextEL:
+$ El = El + 1
+$ Goto Loop2
+$EndL:
+$ arg=arg+1
+$ If arg .Le. 8 Then Goto Loop
+$ Goto Exit
+$
+$Makeit:
+$ VV=F$VERIFY(0)
+$ write sys$output P2
+$ 'P2
+$ VV='F$Verify(VV)
+$Exit:
+$ If V Then Set Verify
+$ENDSUBROUTINE
diff --git a/src/3rdparty/libpng/scripts/png32ce.def b/src/3rdparty/libpng/scripts/png32ce.def
new file mode 100644
index 0000000..7e3b235
--- /dev/null
+++ b/src/3rdparty/libpng/scripts/png32ce.def
@@ -0,0 +1,257 @@
+;------------------------------------------
+; LIBPNG module definition file for Windows
+;------------------------------------------
+
+LIBRARY lpngce
+
+ png_memcpy_check
+ png_memset_check
+ png_set_dither
+ png_read_init_3
+ png_write_init_3
+ png_set_strip_error_numbers
+ png_get_uint_32
+ png_get_uint_16
+ png_get_int_32
+
+EXPORTS
+;Version 1.4.0
+ png_build_grayscale_palette @1
+; png_check_sig @2
+ png_chunk_error @3
+ png_chunk_warning @4
+; png_convert_from_struct_tm @5
+; png_convert_from_time_t @6
+ png_create_info_struct @7
+ png_create_read_struct @8
+ png_create_write_struct @9
+ png_data_freer @10
+ png_destroy_info_struct @11
+ png_destroy_read_struct @12
+ png_destroy_write_struct @13
+ png_error @14
+ png_free @15
+ png_free_data @16
+ png_get_IHDR @17
+ png_get_PLTE @18
+ png_get_bKGD @19
+ png_get_bit_depth @20
+ png_get_cHRM @21
+ png_get_cHRM_fixed @22
+ png_get_channels @23
+ png_get_color_type @24
+ png_get_compression_buffer_size @25
+ png_get_compression_type @26
+ png_get_copyright @27
+ png_get_error_ptr @28
+ png_get_filter_type @29
+ png_get_gAMA @30
+ png_get_gAMA_fixed @31
+ png_get_hIST @32
+ png_get_header_ver @33
+ png_get_header_version @34
+ png_get_iCCP @35
+ png_get_image_height @36
+ png_get_image_width @37
+ png_get_interlace_type @38
+ png_get_io_ptr @39
+ png_get_libpng_ver @40
+ png_get_oFFs @41
+ png_get_pCAL @42
+ png_get_pHYs @43
+ png_get_pixel_aspect_ratio @44
+ png_get_pixels_per_meter @45
+ png_get_progressive_ptr @46
+ png_get_rgb_to_gray_status @47
+ png_get_rowbytes @48
+ png_get_rows @49
+ png_get_sBIT @50
+ png_get_sCAL @51
+ png_get_sPLT @52
+ png_get_sRGB @53
+ png_get_signature @54
+ png_get_tIME @55
+ png_get_tRNS @56
+ png_get_text @57
+ png_get_unknown_chunks @58
+ png_get_user_chunk_ptr @59
+ png_get_user_transform_ptr @60
+ png_get_valid @61
+ png_get_x_offset_microns @62
+ png_get_x_offset_pixels @63
+ png_get_x_pixels_per_meter @64
+ png_get_y_offset_microns @65
+ png_get_y_offset_pixels @66
+ png_get_y_pixels_per_meter @67
+ png_malloc @68
+; png_memcpy_check @69
+; png_memset_check @70
+ png_permit_empty_plte @71
+ png_process_data @72
+ png_progressive_combine_row @73
+ png_read_end @74
+ png_read_image @75
+ png_read_info @76
+; png_read_init is deprecated
+ png_read_init @77
+ png_read_png @78
+ png_read_row @79
+ png_read_rows @80
+ png_read_update_info @81
+ png_reset_zstream @82
+ png_set_IHDR @83
+ png_set_PLTE @84
+ png_set_bKGD @85
+ png_set_background @86
+ png_set_bgr @87
+ png_set_cHRM @88
+ png_set_cHRM_fixed @89
+ png_set_compression_buffer_size @90
+ png_set_compression_level @91
+ png_set_compression_mem_level @92
+ png_set_compression_method @93
+ png_set_compression_strategy @94
+ png_set_compression_window_bits @95
+ png_set_crc_action @96
+; png_set_dither @97
+ png_set_error_fn @98
+ png_set_expand @99
+ png_set_filler @100
+ png_set_filter @101
+ png_set_filter_heuristics @102
+ png_set_flush @103
+ png_set_gAMA @104
+ png_set_gAMA_fixed @105
+ png_set_gamma @106
+ png_set_gray_1_2_4_to_8 @107 ; deprecated
+ png_set_gray_to_rgb @108
+ png_set_hIST @109
+ png_set_iCCP @110
+ png_set_interlace_handling @111
+ png_set_invert_alpha @112
+ png_set_invert_mono @113
+ png_set_keep_unknown_chunks @114
+ png_set_oFFs @115
+ png_set_pCAL @116
+ png_set_pHYs @117
+ png_set_packing @118
+ png_set_packswap @119
+ png_set_palette_to_rgb @120
+ png_set_progressive_read_fn @121
+ png_set_read_fn @122
+ png_set_read_status_fn @123
+ png_set_read_user_chunk_fn @124
+ png_set_read_user_transform_fn @125
+ png_set_rgb_to_gray @126
+ png_set_rgb_to_gray_fixed @127
+ png_set_rows @128
+ png_set_sBIT @129
+ png_set_sCAL @130
+ png_set_sPLT @131
+ png_set_sRGB @132
+ png_set_sRGB_gAMA_and_cHRM @133
+ png_set_shift @134
+ png_set_sig_bytes @135
+ png_set_strip_16 @136
+ png_set_strip_alpha @137
+ png_set_swap @138
+ png_set_swap_alpha @139
+ png_set_tIME @140
+ png_set_tRNS @141
+ png_set_tRNS_to_alpha @142
+ png_set_text @143
+ png_set_unknown_chunk_location @144
+ png_set_unknown_chunks @145
+ png_set_user_transform_info @146
+ png_set_write_fn @147
+ png_set_write_status_fn @148
+ png_set_write_user_transform_fn @149
+ png_sig_cmp @150
+ png_start_read_image @151
+ png_warning @152
+ png_write_chunk @153
+ png_write_chunk_data @154
+ png_write_chunk_end @155
+ png_write_chunk_start @156
+ png_write_end @157
+ png_write_flush @158
+ png_write_image @159
+ png_write_info @160
+ png_write_info_before_PLTE @161
+; png_write_init is deprecated
+ png_write_init @162
+ png_write_png @163
+ png_write_row @164
+ png_write_rows @165
+; png_read_init_2 and png_write_init_2 are deprecated.
+ png_read_init_2 @166
+ png_write_init_2 @167
+ png_access_version_number @168
+; png_sig_bytes @169
+; png_libpng_ver @170
+ png_init_io @171
+ png_convert_to_rfc1123 @172
+ png_set_invalid @173
+; Added at version 1.0.12
+; For compatiblity with 1.0.7-1.0.11
+ png_info_init @174
+; png_read_init_3 @175
+; png_write_init_3 @176
+ png_info_init_3 @177
+ png_destroy_struct @178
+; Added at version 1.2.0
+; For use with PNG_USER_MEM_SUPPORTED
+; png_destroy_struct_2 @179
+; png_create_read_struct_2 @180
+; png_create_write_struct_2 @181
+; png_malloc_default @182
+; png_free_default @183
+; MNG features
+; png_permit_mng_features @184
+; MMX support
+; png_mmx_support @185
+; png_get_mmx_flagmask @186
+; png_get_asm_flagmask @187
+; png_get_asm_flags @188
+; png_get_mmx_bitdepth_threshold @189
+; png_get_mmx_rowbytes_threshold @190
+; png_set_asm_flags @191
+; png_init_mmx_flags @192
+; Strip error numbers
+; png_set_strip_error_numbers @193
+; Added at version 1.2.2
+ png_handle_as_unknown @179
+ png_zalloc @180
+ png_zfree @181
+; png_handle_as_unknown @194
+; png_zalloc @195
+; png_zfree @196
+; Added at version 1.2.6
+ png_malloc_warn @195
+ png_get_user_height_max @196
+ png_get_user_width_max @197
+ png_set_user_limits @198
+; Added at version 1.2.7
+ png_set_add_alpha @199
+; Added at version 1.2.9
+; png_get_uint_32 @200
+ png_save_uint_32 @201
+; png_get_uint_16 @202
+ png_save_uint_16 @203
+; png_get_int_32 @204
+ png_save_int_32 @205
+ png_get_uint_31 @206
+ png_set_expand_gray_1_2_4_to_8 @207
+; Added at version 1.2.41
+ png_write_sig @208
+ png_benign_error @209
+ png_benign_chunk_error @210
+ png_set_benign_error @211
+ png_get_io_chunk_name @212
+ png_get_io_state @213
+ png_set_premultiply_alpha @214
+ png_get_chunk_cache_max @215
+ png_set_chunk_cache_max @216
+ png_check_cHRM_fixed @217
+ png_calloc @218
+ png_set_longjmp_fn @219
diff --git a/src/3rdparty/libpng/scripts/pngos2.def b/src/3rdparty/libpng/scripts/pngos2.def
new file mode 100644
index 0000000..2d80eb4
--- /dev/null
+++ b/src/3rdparty/libpng/scripts/pngos2.def
@@ -0,0 +1,251 @@
+;----------------------------------------
+; PNG.LIB module definition file for OS/2
+;----------------------------------------
+
+; Version 1.4.0
+
+LIBRARY PNG
+DESCRIPTION "PNG image compression library for OS/2"
+CODE PRELOAD MOVEABLE DISCARDABLE
+DATA PRELOAD MOVEABLE MULTIPLE
+
+EXPORTS
+
+ png_build_grayscale_palette
+ png_chunk_error
+ png_chunk_warning
+ png_convert_from_struct_tm
+ png_convert_from_time_t
+ png_create_info_struct
+ png_create_read_struct
+ png_create_write_struct
+ png_data_freer
+ png_destroy_info_struct
+ png_destroy_read_struct
+ png_destroy_write_struct
+ png_error
+ png_free
+ png_free_data
+ png_get_IHDR
+ png_get_PLTE
+ png_get_bKGD
+ png_get_bit_depth
+ png_get_cHRM
+ png_get_cHRM_fixed
+ png_get_channels
+ png_get_color_type
+ png_get_compression_buffer_size
+ png_get_compression_type
+ png_get_copyright
+ png_get_error_ptr
+ png_get_filter_type
+ png_get_gAMA
+ png_get_gAMA_fixed
+ png_get_hIST
+ png_get_header_ver
+ png_get_header_version
+ png_get_iCCP
+ png_get_image_height
+ png_get_image_width
+ png_get_interlace_type
+ png_get_io_ptr
+ png_get_libpng_ver
+ png_get_oFFs
+ png_get_pCAL
+ png_get_pHYs
+ png_get_pixel_aspect_ratio
+ png_get_pixels_per_meter
+ png_get_progressive_ptr
+ png_get_rgb_to_gray_status
+ png_get_rowbytes
+ png_get_rows
+ png_get_sBIT
+ png_get_sCAL
+ png_get_sPLT
+ png_get_sRGB
+ png_get_signature
+ png_get_tIME
+ png_get_tRNS
+ png_get_text
+ png_get_unknown_chunks
+ png_get_user_chunk_ptr
+ png_get_user_transform_ptr
+ png_get_valid
+ png_get_x_offset_microns
+ png_get_x_offset_pixels
+ png_get_x_pixels_per_meter
+ png_get_y_offset_microns
+ png_get_y_offset_pixels
+ png_get_y_pixels_per_meter
+ png_malloc
+ png_process_data
+ png_progressive_combine_row
+ png_read_end
+ png_read_image
+ png_read_info
+ png_read_png
+ png_read_row
+ png_read_rows
+ png_read_update_info
+ png_reset_zstream
+ png_set_IHDR
+ png_set_PLTE
+ png_set_bKGD
+ png_set_background
+ png_set_bgr
+ png_set_cHRM
+ png_set_cHRM_fixed
+ png_set_compression_buffer_size
+ png_set_compression_level
+ png_set_compression_mem_level
+ png_set_compression_method
+ png_set_compression_strategy
+ png_set_compression_window_bits
+ png_set_crc_action
+ png_set_error_fn
+ png_set_expand
+ png_set_filler
+ png_set_filter
+ png_set_filter_heuristics
+ png_set_flush
+ png_set_gAMA
+ png_set_gAMA_fixed
+ png_set_gamma
+ png_set_gray_to_rgb
+ png_set_hIST
+ png_set_iCCP
+ png_set_interlace_handling
+ png_set_invert_alpha
+ png_set_invert_mono
+ png_set_keep_unknown_chunks
+ png_set_oFFs
+ png_set_pCAL
+ png_set_pHYs
+ png_set_packing
+ png_set_packswap
+ png_set_palette_to_rgb
+ png_set_progressive_read_fn
+ png_set_read_fn
+ png_set_read_status_fn
+ png_set_read_user_chunk_fn
+ png_set_read_user_transform_fn
+ png_set_rgb_to_gray
+ png_set_rgb_to_gray_fixed
+ png_set_rows
+ png_set_sBIT
+ png_set_sCAL
+ png_set_sPLT
+ png_set_sRGB
+ png_set_sRGB_gAMA_and_cHRM
+ png_set_shift
+ png_set_sig_bytes
+ png_set_strip_16
+ png_set_strip_alpha
+ png_set_swap
+ png_set_swap_alpha
+ png_set_tIME
+ png_set_tRNS
+ png_set_tRNS_to_alpha
+ png_set_text
+ png_set_unknown_chunk_location
+ png_set_unknown_chunks
+ png_set_user_transform_info
+ png_set_write_fn
+ png_set_write_status_fn
+ png_set_write_user_transform_fn
+ png_sig_cmp
+ png_start_read_image
+ png_warning
+ png_write_chunk
+ png_write_chunk_data
+ png_write_chunk_end
+ png_write_chunk_start
+ png_write_end
+ png_write_flush
+ png_write_image
+ png_write_info
+ png_write_info_before_PLTE
+ png_write_png
+ png_write_row
+ png_write_rows
+ png_write_sig
+ png_access_version_number
+ png_init_io
+ png_convert_to_rfc1123
+ png_set_invalid
+
+; Added at version 1.2.0:
+ png_permit_empty_plte
+ png_permit_mng_features
+
+; Added at version 1.2.2:
+ png_handle_as_unknown
+
+; Added at version 1.2.2 and deleted from 1.2.3:
+; png_zalloc
+; png_zfree
+
+; Added at version 1.2.4
+ png_malloc_warn
+
+; Added at version 1.2.6
+ png_set_user_limits
+ png_get_user_height_max
+ png_get_user_width_max
+; Added at version 1.2.7
+ png_set_add_alpha
+
+; Added at version 1.2.9
+ png_save_uint_32
+ png_save_uint_16
+ png_save_int_32
+ png_get_uint_31
+ png_set_expand_gray_1_2_4_to_8
+
+; Added at version 1.2.41
+ png_write_sig
+; png_benign_error
+; png_benign_chunk_error
+; png_set_benign_error
+ png_get_io_chunk_name
+ png_get_io_state
+ png_set_premultiply_alpha
+ png_get_chunk_cache_max
+ png_set_chunk_cache_max
+ png_check_cHRM_fixed
+ png_calloc
+ png_set_longjmp_fn
+
+; These are not present when libpng is compiled with PNG_NO_GLOBAL_ARRAYS
+ png_libpng_ver
+ png_pass_start
+ png_pass_inc
+ png_pass_ystart
+ png_pass_yinc
+ png_pass_mask
+ png_pass_dsp_mask
+; png_pass_width
+; png_pass_height
+
+; These are not present when libpng is compiled with PNG_NO_GLOBAL_ARRAYS
+ png_IHDR
+ png_IDAT
+ png_IEND
+ png_PLTE
+ png_bKGD
+ png_cHRM
+ png_gAMA
+ png_hIST
+ png_iCCP
+ png_iTXt
+ png_oFFs
+ png_pCAL
+ png_pHYs
+ png_sBIT
+ png_sCAL
+ png_sPLT
+ png_sRGB
+ png_tEXt
+ png_tIME
+ png_tRNS
+ png_zTXt
diff --git a/src/3rdparty/libpng/scripts/pngwin.def b/src/3rdparty/libpng/scripts/pngwin.def
new file mode 100644
index 0000000..657e3b4
--- /dev/null
+++ b/src/3rdparty/libpng/scripts/pngwin.def
@@ -0,0 +1,212 @@
+;------------------------------------------
+; LIBPNG module definition file for Windows
+;------------------------------------------
+
+LIBRARY
+
+EXPORTS
+;Version 1.4.0
+ png_build_grayscale_palette
+ png_chunk_error
+ png_chunk_warning
+ png_convert_from_struct_tm
+ png_convert_from_time_t
+ png_create_info_struct
+ png_create_read_struct
+ png_create_write_struct
+ png_data_freer
+ png_destroy_info_struct
+ png_destroy_read_struct
+ png_destroy_write_struct
+ png_error
+ png_free
+ png_free_data
+ png_get_IHDR
+ png_get_PLTE
+ png_get_bKGD
+ png_get_bit_depth
+ png_get_cHRM
+ png_get_cHRM_fixed
+ png_get_channels
+ png_get_color_type
+ png_get_compression_buffer_size
+ png_get_compression_type
+ png_get_copyright
+ png_get_error_ptr
+ png_get_filter_type
+ png_get_gAMA
+ png_get_gAMA_fixed
+ png_get_hIST
+ png_get_header_ver
+ png_get_header_version
+ png_get_iCCP
+ png_get_image_height
+ png_get_image_width
+ png_get_interlace_type
+ png_get_io_ptr
+ png_get_libpng_ver
+ png_get_oFFs
+ png_get_pCAL
+ png_get_pHYs
+ png_get_pixel_aspect_ratio
+ png_get_pixels_per_meter
+ png_get_progressive_ptr
+ png_get_rgb_to_gray_status
+ png_get_rowbytes
+ png_get_rows
+ png_get_sBIT
+ png_get_sCAL
+ png_get_sPLT
+ png_get_sRGB
+ png_get_signature
+ png_get_tIME
+ png_get_tRNS
+ png_get_text
+ png_get_unknown_chunks
+ png_get_user_chunk_ptr
+ png_get_user_transform_ptr
+ png_get_valid
+ png_get_x_offset_microns
+ png_get_x_offset_pixels
+ png_get_x_pixels_per_meter
+ png_get_y_offset_microns
+ png_get_y_offset_pixels
+ png_get_y_pixels_per_meter
+ png_malloc
+ png_process_data
+ png_progressive_combine_row
+ png_read_end
+ png_read_image
+ png_read_info
+ png_read_png
+ png_read_row
+ png_read_rows
+ png_read_update_info
+ png_reset_zstream
+ png_set_IHDR
+ png_set_PLTE
+ png_set_bKGD
+ png_set_background
+ png_set_bgr
+ png_set_cHRM
+ png_set_cHRM_fixed
+ png_set_compression_buffer_size
+ png_set_compression_level
+ png_set_compression_mem_level
+ png_set_compression_method
+ png_set_compression_strategy
+ png_set_compression_window_bits
+ png_set_crc_action
+ png_set_error_fn
+ png_set_expand
+ png_set_filler
+ png_set_filter
+ png_set_filter_heuristics
+ png_set_flush
+ png_set_gAMA
+ png_set_gAMA_fixed
+ png_set_gamma
+ png_set_gray_to_rgb
+ png_set_hIST
+ png_set_iCCP
+ png_set_interlace_handling
+ png_set_invert_alpha
+ png_set_invert_mono
+ png_set_keep_unknown_chunks
+ png_set_oFFs
+ png_set_pCAL
+ png_set_pHYs
+ png_set_packing
+ png_set_packswap
+ png_set_palette_to_rgb
+ png_set_progressive_read_fn
+ png_set_read_fn
+ png_set_read_status_fn
+ png_set_read_user_chunk_fn
+ png_set_read_user_transform_fn
+ png_set_rgb_to_gray
+ png_set_rgb_to_gray_fixed
+ png_set_rows
+ png_set_sBIT
+ png_set_sCAL
+ png_set_sPLT
+ png_set_sRGB
+ png_set_sRGB_gAMA_and_cHRM
+ png_set_shift
+ png_set_sig_bytes
+ png_set_strip_16
+ png_set_strip_alpha
+ png_set_swap
+ png_set_swap_alpha
+ png_set_tIME
+ png_set_tRNS
+ png_set_tRNS_to_alpha
+ png_set_text
+ png_set_unknown_chunk_location
+ png_set_unknown_chunks
+ png_set_user_transform_info
+ png_set_write_fn
+ png_set_write_status_fn
+ png_set_write_user_transform_fn
+ png_sig_cmp
+ png_start_read_image
+ png_warning
+ png_write_chunk
+ png_write_chunk_data
+ png_write_chunk_end
+ png_write_chunk_start
+ png_write_end
+ png_write_flush
+ png_write_image
+ png_write_info
+ png_write_info_before_PLTE
+ png_write_png
+ png_write_row
+ png_write_rows
+ png_access_version_number
+ png_init_io
+ png_convert_to_rfc1123
+ png_set_invalid
+; Added at version 1.0.12
+ png_info_init_3
+ png_destroy_struct
+; Added at version 1.2.0
+; For use with PNG_USER_MEM_SUPPORTED
+ png_destroy_struct_2
+ png_create_read_struct_2
+ png_create_write_struct_2
+ png_malloc_default
+ png_free_default
+; MNG features
+ png_permit_mng_features
+; Added at version 1.2.2
+ png_handle_as_unknown
+; Added at version 1.2.2 and deleted from 1.2.3
+; png_zalloc
+; png_zfree
+; Added at version 1.2.4
+ png_malloc_warn
+ png_get_user_height_max
+ png_get_user_width_max
+ png_set_user_limits
+; Added at version 1.2.7
+ png_set_add_alpha
+; Added at version 1.2.9
+ png_save_uint_32
+ png_save_uint_16
+ png_save_int_32
+ png_get_uint_31
+ png_set_expand_gray_1_2_4_to_8
+; Added at version 1.2.41
+ png_write_sig
+; png_benign_error
+; png_benign_chunk_error
+; png_set_benign_error
+ png_get_io_chunk_name
+ png_get_io_state
+ png_set_premultiply_alpha
+ png_get_chunk_cache_max
+ png_set_chunk_cache_max
+ png_check_cHRM_fixed
+ png_calloc
+ png_set_longjmp_fn
diff --git a/src/3rdparty/libpng/scripts/pngwin.rc b/src/3rdparty/libpng/scripts/pngwin.rc
new file mode 100644
index 0000000..9335cbb
--- /dev/null
+++ b/src/3rdparty/libpng/scripts/pngwin.rc
@@ -0,0 +1,112 @@
+#define PNG_VERSION_INFO_ONLY
+
+#include <windows.h>
+#include "../png.h"
+
+#define _QUOTE(x) # x
+#define QUOTE(x) _QUOTE(x)
+
+#define PNG_LIBPNG_DLLFNAME "LIBPNG"
+
+/* Support deprecated PRIVATEBUILD macro */
+#if defined(PRIVATEBUILD) && !defined(PNG_USER_PRIVATEBUILD)
+# define PNG_USER_PRIVATEBUILD PRIVATEBUILD
+#endif
+
+#if defined(PNG_USER_DLLFNAME_POSTFIX) && !defined(PNG_USER_PRIVATEBUILD)
+# error "PNG_USER_PRIVATEBUILD must be defined as a string describing the\
+ custom changes made to the library."
+#endif
+
+/* Prioritize PNG_USER_x over PNG_LIBPNG_x */
+#ifdef PNG_USER_DLLFNAME_POSTFIX
+# undef PNG_LIBPNG_DLLFNAME_POSTFIX
+# define PNG_LIBPNG_DLLFNAME_POSTFIX PNG_USER_DLLFNAME_POSTFIX
+#endif
+
+#ifdef PNG_USER_VERSIONINFO_COMMENTS
+# undef PNG_LIBPNG_VERSIONINFO_COMMENTS
+# define PNG_LIBPNG_VERSIONINFO_COMMENTS PNG_USER_VERSIONINFO_COMMENTS
+#endif
+
+#if defined(PNG_DEBUG) && (PNG_DEBUG > 0)
+# define VS_DEBUG VS_FF_DEBUG
+# ifndef PNG_LIBPNG_DLLFNAME_POSTFIX
+# define PNG_LIBPNG_DLLFNAME_POSTFIX "D"
+# endif /* PNG_LIBPNG_DLLFNAME_POSTFIX */
+# ifndef PNG_LIBPNG_VERSIONINFO_COMMENTS
+# define PNG_LIBPNG_VERSIONINFO_COMMENTS "PNG_DEBUG=" QUOTE(PNG_DEBUG)
+# endif /* PNG_LIBPNG_VERSIONINFO_COMMENTS */
+#else
+# define VS_DEBUG 0
+# ifndef PNG_LIBPNG_DLLFNAME_POSTFIX
+# define PNG_LIBPNG_DLLFNAME_POSTFIX
+# endif /* PNG_LIBPNG_DLLFNAME_POSTFIX */
+#endif /* defined(DEBUG)... */
+
+#ifdef PNG_USER_PRIVATEBUILD
+# define VS_PRIVATEBUILD VS_FF_PRIVATEBUILD
+#else
+# define VS_PRIVATEBUILD 0
+#endif /* PNG_USER_PRIVATEBUILD */
+
+#ifdef PNG_LIBPNG_SPECIALBUILD
+# define VS_SPECIALBUILD VS_FF_SPECIALBUILD
+#else
+# define VS_SPECIALBUILD 0
+#endif /* PNG_LIBPNG_BUILD_SPECIAL */
+
+#if ((PNG_LIBPNG_BUILD_BASE_TYPE & PNG_LIBPNG_RELEASE_STATUS_MASK) !=\
+ PNG_LIBPNG_BUILD_STABLE)
+# define VS_PRERELEASE VS_FF_PRERELEASE
+# define VS_PATCHED 0
+#else
+# define VS_PRERELEASE 0
+# if (PNG_LIBPNG_BUILD_BASE_TYPE & PNG_LIBPNG_BUILD_PATCHED)
+# define VS_PATCHED VS_FF_PATCHED
+# else
+# define VS_PATCHED 0
+# endif
+#endif
+
+VS_VERSION_INFO VERSIONINFO
+FILEVERSION PNG_LIBPNG_VER_MAJOR, PNG_LIBPNG_VER_MINOR, PNG_LIBPNG_VER_RELEASE, PNG_LIBPNG_VER_BUILD
+PRODUCTVERSION PNG_LIBPNG_VER_MAJOR, PNG_LIBPNG_VER_MINOR, PNG_LIBPNG_VER_RELEASE, PNG_LIBPNG_VER_BUILD
+FILEFLAGSMASK VS_FFI_FILEFLAGSMASK
+FILEFLAGS VS_DEBUG | VS_PRIVATEBUILD | VS_SPECIALBUILD | VS_PRERELEASE | VS_PATCHED
+FILEOS VOS__WINDOWS32
+FILETYPE VFT_DLL
+FILESUBTYPE VFT2_UNKNOWN
+BEGIN
+ BLOCK "StringFileInfo"
+ BEGIN BLOCK "040904E4" /* Language type = U.S English(0x0409) and Character Set = Windows, Multilingual(0x04E4) */
+ BEGIN
+#ifdef PNG_LIBPNG_VERSIONINFO_COMMENTS
+ VALUE "Comments", PNG_LIBPNG_VERSIONINFO_COMMENTS "\000"
+#endif /* PNG_LIBPNG_VERSIONINFO_COMMENTS */
+#ifdef PNG_USER_VERSIONINFO_COMPANYNAME
+ VALUE "CompanyName", PNG_USER_VERSIONINFO_COMPANYNAME "\000"
+#endif /* PNG_USER_VERSIONINFO_COMPANYNAME */
+ VALUE "FileDescription", "PNG image compression library\000"
+ VALUE "FileVersion", PNG_LIBPNG_VER_STRING "\000"
+ VALUE "InternalName", PNG_LIBPNG_DLLFNAME QUOTE(PNG_LIBPNG_VER_DLLNUM) PNG_LIBPNG_DLLFNAME_POSTFIX " (Windows 32 bit)\000"
+ VALUE "LegalCopyright", "\251 1998-2009 Glenn Randers-Pehrson et al.\000"
+#ifdef PNG_USER_VERSIONINFO_LEGALTRADEMARKS
+ VALUE "LegalTrademarks", PNG_USER_VERSIONINFO_LEGALTRADEMARKS "\000"
+#endif /* PNG_USER_VERSIONINFO_LEGALTRADEMARKS */
+ VALUE "OriginalFilename", PNG_LIBPNG_DLLFNAME QUOTE(PNG_LIBPNG_VER_DLLNUM) PNG_LIBPNG_DLLFNAME_POSTFIX ".DLL\000"
+#ifdef PNG_USER_PRIVATEBUILD
+ VALUE "PrivateBuild", PNG_USER_PRIVATEBUILD "\000"
+#endif /* PNG_USER_PRIVATEBUILD */
+ VALUE "ProductName", "LibPNG\000"
+ VALUE "ProductVersion", "1\000"
+#ifdef PNG_LIBPNG_SPECIALBUILD
+ VALUE "SpecialBuild", PNG_LIBPNG_SPECIALBUILD "\000"
+#endif /* PNG_LIBPNG_SPECIALBUILD */
+ END
+ END
+ BLOCK "VarFileInfo"
+ BEGIN
+ VALUE "Translation", 0x0409, 0x04E4
+ END
+END
diff --git a/src/3rdparty/libpng/scripts/smakefile.ppc b/src/3rdparty/libpng/scripts/smakefile.ppc
new file mode 100644
index 0000000..531c693
--- /dev/null
+++ b/src/3rdparty/libpng/scripts/smakefile.ppc
@@ -0,0 +1,33 @@
+# Amiga powerUP (TM) Makefile
+# makefile for libpng and SAS C V6.58/7.00 PPC compiler
+# Copyright (C) 1998 by Andreas R. Kleinert
+#
+# This code is released under the libpng license.
+# For conditions of distribution and use, see the disclaimer
+# and license in png.h
+
+CC = scppc
+CFLAGS = NOSTKCHK NOSINT OPTIMIZE OPTGO OPTPEEP OPTINLOCAL OPTINL IDIR /zlib \
+ OPTLOOP OPTRDEP=8 OPTDEP=8 OPTCOMP=8
+LIBNAME = libpng.a
+AR = ppc-amigaos-ar
+AR_FLAGS = cr
+RANLIB = ppc-amigaos-ranlib
+LDFLAGS = -r -o
+LDLIBS = ../zlib/libzip.a LIB:scppc.a
+LN = ppc-amigaos-ld
+RM = delete quiet
+MKDIR = makedir
+
+OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o pngread.o \
+pngerror.o pngpread.o pngwrite.o pngrtran.o pngwtran.o pngrio.o pngwio.o pngmem.o
+
+all: $(LIBNAME) pngtest
+
+$(LIBNAME): $(OBJS)
+ $(AR) $(AR_FLAGS) $@ $(OBJS)
+ $(RANLIB) $@
+
+pngtest: pngtest.o $(LIBNAME)
+ $(LN) $(LDFLAGS) pngtest LIB:c_ppc.o pngtest.o $(LIBNAME) $(LDLIBS) \
+LIB:end.o
diff --git a/src/3rdparty/libpng/test-pngtest.sh b/src/3rdparty/libpng/test-pngtest.sh
new file mode 100755
index 0000000..c134a8a
--- /dev/null
+++ b/src/3rdparty/libpng/test-pngtest.sh
@@ -0,0 +1,3 @@
+#!/bin/sh
+
+./pngtest ${srcdir}/pngtest.png