update tcl/tk

46 files changed, 47661 insertions, 0 deletions

diff --git a/tcl8.6/unix/Makefile.in b/tcl8.6/unix/Makefile.in
new file mode 100644
index 0000000..aaff7ae
--- /dev/null
+++ b/tcl8.6/unix/Makefile.in
@@ -0,0 +1,2112 @@
+#
+# This file is a Makefile for Tcl. If it has the name "Makefile.in" then it is
+# a template for a Makefile; to generate the actual Makefile, run
+# "./configure", which is a configuration script generated by the "autoconf"
+# program (constructs like "@foo@" will get replaced in the actual Makefile.
+
+VERSION 		= @TCL_VERSION@
+MAJOR_VERSION		= @TCL_MAJOR_VERSION@
+MINOR_VERSION		= @TCL_MINOR_VERSION@
+PATCH_LEVEL		= @TCL_PATCH_LEVEL@
+
+#--------------------------------------------------------------------------
+# Things you can change to personalize the Makefile for your own site (you can
+# make these changes in either Makefile.in or Makefile, but changes to
+# Makefile will get lost if you re-run the configuration script).
+#--------------------------------------------------------------------------
+
+# Default top-level directories in which to install architecture-specific
+# files (exec_prefix) and machine-independent files such as scripts (prefix).
+# The values specified here may be overridden at configure-time with the
+# --exec-prefix and --prefix options to the "configure" script. The *dir vars
+# are standard configure substitutions that are based off prefix and
+# exec_prefix.
+
+prefix			= @prefix@
+exec_prefix		= @exec_prefix@
+bindir			= @bindir@
+libdir			= @libdir@
+includedir		= @includedir@
+datarootdir		= @datarootdir@
+mandir			= @mandir@
+
+# The following definition can be set to non-null for special systems like AFS
+# with replication. It allows the pathnames used for installation to be
+# different than those used for actually reference files at run-time.
+# INSTALL_ROOT is prepended to $prefix and $exec_prefix when installing files.
+INSTALL_ROOT		= $(DESTDIR)
+
+# Path for the platform independent Tcl scripting libraries:
+TCL_LIBRARY		= @TCL_LIBRARY@
+
+# Path to use at runtime to refer to LIB_INSTALL_DIR:
+LIB_RUNTIME_DIR		= $(libdir)
+
+# Directory in which to install the program tclsh:
+BIN_INSTALL_DIR		= $(INSTALL_ROOT)$(bindir)
+
+# Directory in which to install libtcl.so or libtcl.a:
+LIB_INSTALL_DIR		= $(INSTALL_ROOT)$(libdir)
+DLL_INSTALL_DIR		= @DLL_INSTALL_DIR@
+
+# Path name to use when installing library scripts.
+SCRIPT_INSTALL_DIR	= $(INSTALL_ROOT)$(TCL_LIBRARY)
+
+# Directory in which to install the include file tcl.h:
+INCLUDE_INSTALL_DIR	= $(INSTALL_ROOT)$(includedir)
+
+# Path to the private tcl header dir:
+PRIVATE_INCLUDE_DIR	= @PRIVATE_INCLUDE_DIR@
+
+# Directory in which to (optionally) install the private tcl headers:
+PRIVATE_INCLUDE_INSTALL_DIR = $(INSTALL_ROOT)$(PRIVATE_INCLUDE_DIR)
+
+# Top-level directory in which to install manual entries:
+MAN_INSTALL_DIR		= $(INSTALL_ROOT)$(mandir)
+
+# Directory in which to install manual entry for tclsh:
+MAN1_INSTALL_DIR	= $(MAN_INSTALL_DIR)/man1
+
+# Directory in which to install manual entries for Tcl's C library procedures:
+MAN3_INSTALL_DIR	= $(MAN_INSTALL_DIR)/man3
+
+# Directory in which to install manual entries for the built-in Tcl commands:
+MANN_INSTALL_DIR	= $(MAN_INSTALL_DIR)/mann
+
+# Path to the html documentation dir:
+HTML_DIR		= @HTML_DIR@
+
+# Directory in which to install html documentation:
+HTML_INSTALL_DIR	= $(INSTALL_ROOT)$(HTML_DIR)
+
+# Directory in which to install the configuration file tclConfig.sh
+CONFIG_INSTALL_DIR	= $(INSTALL_ROOT)$(libdir)
+
+# Directory in which to install bundled packages:
+PACKAGE_DIR             = @PACKAGE_DIR@
+
+# Package search path.
+TCL_PACKAGE_PATH	= @TCL_PACKAGE_PATH@
+
+# Tcl Module default path roots (TIP189).
+TCL_MODULE_PATH		= @TCL_MODULE_PATH@
+
+# warning flags
+CFLAGS_WARNING		= @CFLAGS_WARNING@
+
+# The default switches for optimization or debugging
+CFLAGS_DEBUG		= @CFLAGS_DEBUG@
+CFLAGS_OPTIMIZE		= @CFLAGS_OPTIMIZE@
+
+# To change the compiler switches, for example to change from optimization to
+# debugging symbols, change the following line:
+#CFLAGS			= $(CFLAGS_DEBUG)
+#CFLAGS			= $(CFLAGS_OPTIMIZE)
+#CFLAGS			= $(CFLAGS_DEBUG) $(CFLAGS_OPTIMIZE)
+CFLAGS			= @CFLAGS_DEFAULT@ @CFLAGS@
+
+# Flags to pass to the linker
+LDFLAGS_DEBUG		= @LDFLAGS_DEBUG@
+LDFLAGS_OPTIMIZE	= @LDFLAGS_OPTIMIZE@
+LDFLAGS			= @LDFLAGS_DEFAULT@ @LDFLAGS@
+
+# To disable ANSI-C procedure prototypes reverse the comment characters on the
+# following lines:
+PROTO_FLAGS		=
+#PROTO_FLAGS		= -DNO_PROTOTYPE
+
+# If you use the setenv, putenv, or unsetenv procedures to modify environment
+# variables in your application and you'd like those modifications to appear
+# in the "env" Tcl variable, switch the comments on the two lines below so
+# that Tcl provides these procedures instead of your standard C library.
+
+ENV_FLAGS =
+#ENV_FLAGS = -DTclSetEnv=setenv -DTcl_PutEnv=putenv -DTclUnsetEnv=unsetenv
+
+# To enable memory debugging, call configure with --enable-symbols=mem
+# Warning: if you enable memory debugging, you must do it *everywhere*,
+# including all the code that calls Tcl, and you must use ckalloc and ckfree
+# everywhere instead of malloc and free.
+
+TCL_STUB_LIB_FILE	= @TCL_STUB_LIB_FILE@
+#TCL_STUB_LIB_FILE	= libtclstub.a
+
+# Generic stub lib name used in rules that apply to tcl and tk
+STUB_LIB_FILE		= ${TCL_STUB_LIB_FILE}
+
+TCL_STUB_LIB_FLAG	= @TCL_STUB_LIB_FLAG@
+#TCL_STUB_LIB_FLAG	= -ltclstub
+
+# To compile without backward compatibility and deprecated code uncomment the
+# following
+NO_DEPRECATED_FLAGS	=
+#NO_DEPRECATED_FLAGS	= -DTCL_NO_DEPRECATED
+
+# Some versions of make, like SGI's, use the following variable to determine
+# which shell to use for executing commands:
+SHELL			= @MAKEFILE_SHELL@
+
+# Tcl used to let the configure script choose which program to use for
+# installing, but there are just too many different versions of "install"
+# around; better to use the install-sh script that comes with the
+# distribution, which is slower but guaranteed to work.
+
+INSTALL_STRIP_PROGRAM   = -s
+INSTALL_STRIP_LIBRARY   = -S -x
+
+INSTALL			= $(SHELL) $(UNIX_DIR)/install-sh -c
+INSTALL_PROGRAM		= ${INSTALL}
+INSTALL_LIBRARY		= ${INSTALL}
+INSTALL_DATA		= ${INSTALL} -m 644
+INSTALL_DATA_DIR	= ${INSTALL} -d -m 755
+
+# NATIVE_TCLSH is the name of a tclsh executable that is available *BEFORE*
+# running make for the first time. Certain build targets (make genstubs) need
+# it to be available on the PATH. This executable should *NOT* be required
+# just to do a normal build although it can be required to run make dist.
+# Do not use SHELL_ENV for NATIVE_TCLSH unless it is the tclsh being built.
+EXE_SUFFIX		= @EXEEXT@
+TCL_EXE			= tclsh${EXE_SUFFIX}
+TCLTEST_EXE		= tcltest${EXE_SUFFIX}
+NATIVE_TCLSH		= @TCLSH_PROG@
+
+# The symbols below provide support for dynamic loading and shared libraries.
+# See configure.in for a description of what the symbols mean. The values of
+# the symbols are normally set by the configure script. You shouldn't normally
+# need to modify any of these definitions by hand.
+
+STLIB_LD		= @STLIB_LD@
+SHLIB_LD		= @SHLIB_LD@
+SHLIB_CFLAGS		= @SHLIB_CFLAGS@ -DBUILD_tcl
+SHLIB_LD_LIBS		= @SHLIB_LD_LIBS@
+TCL_SHLIB_LD_EXTRAS	= @TCL_SHLIB_LD_EXTRAS@
+
+SHLIB_SUFFIX		= @SHLIB_SUFFIX@
+
+DLTEST_TARGETS		= dltest.marker
+
+# Additional search flags needed to find the various shared libraries at
+# run-time. The first symbol is for use when creating a binary with cc, and
+# the second is for use when running ld directly.
+CC_SEARCH_FLAGS	= @CC_SEARCH_FLAGS@
+LD_SEARCH_FLAGS	= @LD_SEARCH_FLAGS@
+
+# The following symbol is defined to "$(DLTEST_TARGETS)" if dynamic loading is
+# available; this causes everything in the "dltest" subdirectory to be built
+# when making "tcltest. If dynamic loading isn't available, configure defines
+# this symbol to an empty string, in which case the shared libraries aren't
+# built.
+BUILD_DLTEST		= @BUILD_DLTEST@
+#BUILD_DLTEST		=
+
+TCL_LIB_FILE		= @TCL_LIB_FILE@
+#TCL_LIB_FILE		= libtcl.a
+
+# Generic lib name used in rules that apply to tcl and tk
+LIB_FILE		= ${TCL_LIB_FILE}
+
+TCL_LIB_FLAG		= @TCL_LIB_FLAG@
+#TCL_LIB_FLAG		= -ltcl
+
+# support for embedded libraries on Darwin / Mac OS X
+DYLIB_INSTALL_DIR	= ${LIB_RUNTIME_DIR}
+
+#--------------------------------------------------------------------------
+# The information below is modified by the configure script when Makefile is
+# generated from Makefile.in. You shouldn't normally modify any of this stuff
+# by hand.
+#--------------------------------------------------------------------------
+
+COMPAT_OBJS		= @LIBOBJS@
+
+AC_FLAGS		= @DEFS@
+AR			= @AR@
+RANLIB			= @RANLIB@
+DTRACE			= @DTRACE@
+SRC_DIR			= @srcdir@
+TOP_DIR			= @TCL_SRC_DIR@
+BUILD_DIR		= @builddir@
+GENERIC_DIR		= $(TOP_DIR)/generic
+TOMMATH_DIR		= $(TOP_DIR)/libtommath
+COMPAT_DIR		= $(TOP_DIR)/compat
+TOOL_DIR		= $(TOP_DIR)/tools
+UNIX_DIR		= $(TOP_DIR)/unix
+MAC_OSX_DIR		= $(TOP_DIR)/macosx
+PKGS_DIR		= $(TOP_DIR)/pkgs
+# Must be absolute because of the cd dltest $(DLTEST_DIR)/configure below.
+DLTEST_DIR		= @TCL_SRC_DIR@/unix/dltest
+# Must be absolute to so the corresponding tcltest's tcl_library is absolute.
+TCL_BUILDTIME_LIBRARY	= @TCL_SRC_DIR@/library
+
+ZLIB_DIR		= ${COMPAT_DIR}/zlib
+ZLIB_INCLUDE		= @ZLIB_INCLUDE@
+
+CC			= @CC@
+#CC			= purify -best-effort @CC@ -DPURIFY
+
+# Flags to be passed to installManPage to control how the manpages should be
+# installed (symlinks, compression, package name suffix).
+MAN_FLAGS               = @MAN_FLAGS@
+
+# If non-empty, install the timezone files that are included with Tcl,
+# otherwise use the ones that ship with the OS.
+INSTALL_TZDATA		= @INSTALL_TZDATA@
+
+#--------------------------------------------------------------------------
+# The information below is usually usable as is. The configure script won't
+# modify it and it only exists to make working around selected rare system
+# configurations easier.
+#--------------------------------------------------------------------------
+
+GDB			= gdb
+TRACE			= strace
+TRACE_OPTS		=
+VALGRIND		= valgrind
+VALGRINDARGS		= --tool=memcheck --num-callers=24 \
+    --leak-resolution=high --leak-check=yes --show-reachable=yes -v \
+    --suppressions=$(TOOL_DIR)/valgrind_suppress
+
+#--------------------------------------------------------------------------
+# The information below should be usable as is. The configure script won't
+# modify it and you shouldn't need to modify it either.
+#--------------------------------------------------------------------------
+
+STUB_CC_SWITCHES = ${CFLAGS} ${CFLAGS_WARNING} ${SHLIB_CFLAGS} \
+-I"${BUILD_DIR}" -I${UNIX_DIR} -I${GENERIC_DIR} -I${TOMMATH_DIR} \
+${AC_FLAGS} ${PROTO_FLAGS} ${ENV_FLAGS} ${EXTRA_CFLAGS} @EXTRA_CC_SWITCHES@
+
+CC_SWITCHES = $(STUB_CC_SWITCHES) ${NO_DEPRECATED_FLAGS}
+
+APP_CC_SWITCHES = $(CC_SWITCHES) @EXTRA_APP_CC_SWITCHES@
+
+LIBS		= @TCL_LIBS@
+
+DEPEND_SWITCHES	= ${CFLAGS} -I${UNIX_DIR} -I${GENERIC_DIR} \
+${AC_FLAGS} ${PROTO_FLAGS} ${EXTRA_CFLAGS} @EXTRA_CC_SWITCHES@
+
+TCLSH_OBJS = tclAppInit.o
+
+TCLTEST_OBJS = tclTestInit.o tclTest.o tclTestObj.o tclTestProcBodyObj.o \
+	tclThreadTest.o tclUnixTest.o
+
+XTTEST_OBJS = xtTestInit.o tclTest.o tclTestObj.o tclTestProcBodyObj.o \
+	tclThreadTest.o tclUnixTest.o tclXtNotify.o tclXtTest.o
+
+GENERIC_OBJS = regcomp.o regexec.o regfree.o regerror.o tclAlloc.o \
+	tclAssembly.o tclAsync.o tclBasic.o tclBinary.o tclCkalloc.o \
+	tclClock.o tclCmdAH.o tclCmdIL.o tclCmdMZ.o \
+	tclCompCmds.o tclCompCmdsGR.o tclCompCmdsSZ.o tclCompExpr.o \
+	tclCompile.o tclConfig.o tclDate.o tclDictObj.o tclDisassemble.o \
+	tclEncoding.o tclEnsemble.o \
+	tclEnv.o tclEvent.o tclExecute.o tclFCmd.o tclFileName.o tclGet.o \
+	tclHash.o tclHistory.o tclIndexObj.o tclInterp.o tclIO.o tclIOCmd.o \
+	tclIORChan.o tclIORTrans.o tclIOGT.o tclIOSock.o tclIOUtil.o \
+	tclLink.o tclListObj.o \
+	tclLiteral.o tclLoad.o tclMain.o tclNamesp.o tclNotify.o \
+	tclObj.o tclOptimize.o tclPanic.o tclParse.o tclPathObj.o tclPipe.o \
+	tclPkg.o tclPkgConfig.o tclPosixStr.o \
+	tclPreserve.o tclProc.o tclRegexp.o \
+	tclResolve.o tclResult.o tclScan.o tclStringObj.o \
+	tclStrToD.o tclThread.o \
+	tclThreadAlloc.o tclThreadJoin.o tclThreadStorage.o tclStubInit.o \
+	tclTimer.o tclTrace.o tclUtf.o tclUtil.o tclVar.o tclZlib.o \
+	tclTomMathInterface.o
+
+OO_OBJS = tclOO.o tclOOBasic.o tclOOCall.o tclOODefineCmds.o tclOOInfo.o \
+	tclOOMethod.o tclOOStubInit.o
+
+TOMMATH_OBJS = bncore.o bn_reverse.o bn_fast_s_mp_mul_digs.o \
+	bn_fast_s_mp_sqr.o bn_mp_add.o bn_mp_and.o \
+        bn_mp_add_d.o bn_mp_clamp.o bn_mp_clear.o bn_mp_clear_multi.o \
+        bn_mp_cmp.o bn_mp_cmp_d.o bn_mp_cmp_mag.o \
+	bn_mp_cnt_lsb.o bn_mp_copy.o \
+	bn_mp_count_bits.o bn_mp_div.o bn_mp_div_d.o bn_mp_div_2.o \
+	bn_mp_div_2d.o bn_mp_div_3.o \
+        bn_mp_exch.o bn_mp_expt_d.o bn_mp_grow.o bn_mp_init.o \
+	bn_mp_init_copy.o bn_mp_init_multi.o bn_mp_init_set.o \
+	bn_mp_init_set_int.o bn_mp_init_size.o bn_mp_karatsuba_mul.o \
+	bn_mp_karatsuba_sqr.o \
+        bn_mp_lshd.o bn_mp_mod.o bn_mp_mod_2d.o bn_mp_mul.o bn_mp_mul_2.o \
+        bn_mp_mul_2d.o bn_mp_mul_d.o bn_mp_neg.o bn_mp_or.o \
+	bn_mp_radix_size.o bn_mp_radix_smap.o \
+        bn_mp_read_radix.o bn_mp_rshd.o bn_mp_set.o bn_mp_set_int.o \
+	bn_mp_shrink.o \
+	bn_mp_sqr.o bn_mp_sqrt.o bn_mp_sub.o bn_mp_sub_d.o \
+        bn_mp_to_unsigned_bin.o bn_mp_to_unsigned_bin_n.o \
+	bn_mp_toom_mul.o bn_mp_toom_sqr.o bn_mp_toradix_n.o \
+	bn_mp_unsigned_bin_size.o bn_mp_xor.o bn_mp_zero.o bn_s_mp_add.o \
+        bn_s_mp_mul_digs.o bn_s_mp_sqr.o bn_s_mp_sub.o
+
+STUB_LIB_OBJS = tclStubLib.o \
+	tclTomMathStubLib.o \
+	tclOOStubLib.o \
+	${COMPAT_OBJS}
+
+UNIX_OBJS = tclUnixChan.o tclUnixEvent.o tclUnixFCmd.o \
+	tclUnixFile.o tclUnixPipe.o tclUnixSock.o \
+	tclUnixTime.o tclUnixInit.o tclUnixThrd.o \
+	tclUnixCompat.o
+
+NOTIFY_OBJS = tclUnixNotfy.o
+
+MAC_OSX_OBJS = tclMacOSXBundle.o tclMacOSXFCmd.o tclMacOSXNotify.o
+
+CYGWIN_OBJS = tclWinError.o
+
+DTRACE_OBJ = tclDTrace.o
+
+ZLIB_OBJS = Zadler32.o Zcompress.o Zcrc32.o Zdeflate.o Zinfback.o \
+	Zinffast.o Zinflate.o Zinftrees.o Ztrees.o Zuncompr.o Zzutil.o
+
+TCL_OBJS = ${GENERIC_OBJS} ${UNIX_OBJS} ${NOTIFY_OBJS} ${COMPAT_OBJS} \
+	${OO_OBJS} @DL_OBJS@ @PLAT_OBJS@
+
+OBJS = ${TCL_OBJS} ${TOMMATH_OBJS} @DTRACE_OBJ@ @ZLIB_OBJS@
+
+TCL_DECLS = \
+	$(GENERIC_DIR)/tcl.decls \
+	$(GENERIC_DIR)/tclInt.decls \
+	$(GENERIC_DIR)/tclOO.decls \
+	$(GENERIC_DIR)/tclTomMath.decls
+
+GENERIC_HDRS = \
+	$(GENERIC_DIR)/tcl.h \
+	$(GENERIC_DIR)/tclDecls.h \
+	$(GENERIC_DIR)/tclInt.h \
+	$(GENERIC_DIR)/tclIntDecls.h \
+	$(GENERIC_DIR)/tclIntPlatDecls.h \
+	$(GENERIC_DIR)/tclTomMath.h \
+	$(GENERIC_DIR)/tclTomMathDecls.h \
+	$(GENERIC_DIR)/tclOO.h \
+	$(GENERIC_DIR)/tclOODecls.h \
+	$(GENERIC_DIR)/tclOOInt.h \
+	$(GENERIC_DIR)/tclOOIntDecls.h \
+	$(GENERIC_DIR)/tclPatch.h \
+	$(GENERIC_DIR)/tclPlatDecls.h \
+	$(GENERIC_DIR)/tclPort.h \
+	$(GENERIC_DIR)/tclRegexp.h
+
+GENERIC_SRCS = \
+	$(GENERIC_DIR)/regcomp.c \
+	$(GENERIC_DIR)/regexec.c \
+	$(GENERIC_DIR)/regfree.c \
+	$(GENERIC_DIR)/regerror.c \
+	$(GENERIC_DIR)/tclAlloc.c \
+	$(GENERIC_DIR)/tclAssembly.c \
+	$(GENERIC_DIR)/tclAsync.c \
+	$(GENERIC_DIR)/tclBasic.c \
+	$(GENERIC_DIR)/tclBinary.c \
+	$(GENERIC_DIR)/tclCkalloc.c \
+	$(GENERIC_DIR)/tclClock.c \
+	$(GENERIC_DIR)/tclCmdAH.c \
+	$(GENERIC_DIR)/tclCmdIL.c \
+	$(GENERIC_DIR)/tclCmdMZ.c \
+	$(GENERIC_DIR)/tclCompCmds.c \
+	$(GENERIC_DIR)/tclCompCmdsGR.c \
+	$(GENERIC_DIR)/tclCompCmdsSZ.c \
+	$(GENERIC_DIR)/tclCompExpr.c \
+	$(GENERIC_DIR)/tclCompile.c \
+	$(GENERIC_DIR)/tclConfig.c \
+	$(GENERIC_DIR)/tclDate.c \
+	$(GENERIC_DIR)/tclDictObj.c \
+	$(GENERIC_DIR)/tclDisassemble.c \
+	$(GENERIC_DIR)/tclEncoding.c \
+	$(GENERIC_DIR)/tclEnsemble.c \
+	$(GENERIC_DIR)/tclEnv.c \
+	$(GENERIC_DIR)/tclEvent.c \
+	$(GENERIC_DIR)/tclExecute.c \
+	$(GENERIC_DIR)/tclFCmd.c \
+	$(GENERIC_DIR)/tclFileName.c \
+	$(GENERIC_DIR)/tclGet.c \
+	$(GENERIC_DIR)/tclHash.c \
+	$(GENERIC_DIR)/tclHistory.c \
+	$(GENERIC_DIR)/tclIndexObj.c \
+	$(GENERIC_DIR)/tclInterp.c \
+	$(GENERIC_DIR)/tclIO.c \
+	$(GENERIC_DIR)/tclIOCmd.c \
+	$(GENERIC_DIR)/tclIOGT.c \
+	$(GENERIC_DIR)/tclIOSock.c \
+	$(GENERIC_DIR)/tclIOUtil.c \
+	$(GENERIC_DIR)/tclIORChan.c \
+	$(GENERIC_DIR)/tclIORTrans.c \
+	$(GENERIC_DIR)/tclLink.c \
+	$(GENERIC_DIR)/tclListObj.c \
+	$(GENERIC_DIR)/tclLiteral.c \
+	$(GENERIC_DIR)/tclLoad.c \
+	$(GENERIC_DIR)/tclMain.c \
+	$(GENERIC_DIR)/tclNamesp.c \
+	$(GENERIC_DIR)/tclNotify.c \
+	$(GENERIC_DIR)/tclObj.c \
+	$(GENERIC_DIR)/tclOptimize.c \
+	$(GENERIC_DIR)/tclParse.c \
+	$(GENERIC_DIR)/tclPathObj.c \
+	$(GENERIC_DIR)/tclPipe.c \
+	$(GENERIC_DIR)/tclPkg.c \
+	$(GENERIC_DIR)/tclPkgConfig.c \
+	$(GENERIC_DIR)/tclPosixStr.c \
+	$(GENERIC_DIR)/tclPreserve.c \
+	$(GENERIC_DIR)/tclProc.c \
+	$(GENERIC_DIR)/tclRegexp.c \
+	$(GENERIC_DIR)/tclResolve.c \
+	$(GENERIC_DIR)/tclResult.c \
+	$(GENERIC_DIR)/tclScan.c \
+	$(GENERIC_DIR)/tclStubInit.c \
+	$(GENERIC_DIR)/tclStringObj.c \
+	$(GENERIC_DIR)/tclStrToD.c \
+	$(GENERIC_DIR)/tclTest.c \
+	$(GENERIC_DIR)/tclTestObj.c \
+	$(GENERIC_DIR)/tclTestProcBodyObj.c \
+	$(GENERIC_DIR)/tclThread.c \
+	$(GENERIC_DIR)/tclThreadAlloc.c \
+	$(GENERIC_DIR)/tclThreadJoin.c \
+	$(GENERIC_DIR)/tclThreadStorage.c \
+	$(GENERIC_DIR)/tclTimer.c \
+	$(GENERIC_DIR)/tclTrace.c \
+	$(GENERIC_DIR)/tclUtil.c \
+	$(GENERIC_DIR)/tclVar.c \
+	$(GENERIC_DIR)/tclAssembly.c \
+	$(GENERIC_DIR)/tclZlib.c
+
+OO_SRCS = \
+	$(GENERIC_DIR)/tclOO.c \
+	$(GENERIC_DIR)/tclOOBasic.c \
+	$(GENERIC_DIR)/tclOOCall.c \
+	$(GENERIC_DIR)/tclOODefineCmds.c \
+	$(GENERIC_DIR)/tclOOInfo.c \
+	$(GENERIC_DIR)/tclOOMethod.c \
+	$(GENERIC_DIR)/tclOOStubInit.c
+
+STUB_SRCS = \
+	$(GENERIC_DIR)/tclStubLib.c \
+	$(GENERIC_DIR)/tclTomMathStubLib.c \
+	$(GENERIC_DIR)/tclOOStubLib.c
+
+TOMMATH_SRCS = \
+	$(TOMMATH_DIR)/bncore.c \
+	$(TOMMATH_DIR)/bn_reverse.c \
+	$(TOMMATH_DIR)/bn_fast_s_mp_mul_digs.c \
+	$(TOMMATH_DIR)/bn_fast_s_mp_sqr.c \
+	$(TOMMATH_DIR)/bn_mp_add.c \
+	$(TOMMATH_DIR)/bn_mp_add_d.c \
+	$(TOMMATH_DIR)/bn_mp_and.c \
+	$(TOMMATH_DIR)/bn_mp_clamp.c \
+	$(TOMMATH_DIR)/bn_mp_clear.c \
+	$(TOMMATH_DIR)/bn_mp_clear_multi.c \
+	$(TOMMATH_DIR)/bn_mp_cmp.c \
+	$(TOMMATH_DIR)/bn_mp_cmp_d.c \
+	$(TOMMATH_DIR)/bn_mp_cmp_mag.c \
+	$(TOMMATH_DIR)/bn_mp_copy.c \
+	$(TOMMATH_DIR)/bn_mp_cnt_lsb.c \
+	$(TOMMATH_DIR)/bn_mp_count_bits.c \
+	$(TOMMATH_DIR)/bn_mp_div.c \
+	$(TOMMATH_DIR)/bn_mp_div_d.c \
+	$(TOMMATH_DIR)/bn_mp_div_2.c \
+	$(TOMMATH_DIR)/bn_mp_div_2d.c \
+	$(TOMMATH_DIR)/bn_mp_div_3.c \
+	$(TOMMATH_DIR)/bn_mp_exch.c \
+	$(TOMMATH_DIR)/bn_mp_expt_d.c \
+	$(TOMMATH_DIR)/bn_mp_grow.c \
+	$(TOMMATH_DIR)/bn_mp_init.c \
+	$(TOMMATH_DIR)/bn_mp_init_copy.c \
+	$(TOMMATH_DIR)/bn_mp_init_multi.c \
+	$(TOMMATH_DIR)/bn_mp_init_set.c \
+	$(TOMMATH_DIR)/bn_mp_init_set_int.c \
+	$(TOMMATH_DIR)/bn_mp_init_size.c \
+	$(TOMMATH_DIR)/bn_mp_karatsuba_mul.c \
+	$(TOMMATH_DIR)/bn_mp_karatsuba_sqr.c \
+	$(TOMMATH_DIR)/bn_mp_lshd.c \
+	$(TOMMATH_DIR)/bn_mp_mod.c \
+	$(TOMMATH_DIR)/bn_mp_mod_2d.c \
+	$(TOMMATH_DIR)/bn_mp_mul.c \
+	$(TOMMATH_DIR)/bn_mp_mul_2.c \
+	$(TOMMATH_DIR)/bn_mp_mul_2d.c \
+	$(TOMMATH_DIR)/bn_mp_mul_d.c \
+	$(TOMMATH_DIR)/bn_mp_neg.c \
+	$(TOMMATH_DIR)/bn_mp_or.c \
+	$(TOMMATH_DIR)/bn_mp_radix_size.c \
+	$(TOMMATH_DIR)/bn_mp_radix_smap.c \
+	$(TOMMATH_DIR)/bn_mp_read_radix.c \
+	$(TOMMATH_DIR)/bn_mp_rshd.c \
+	$(TOMMATH_DIR)/bn_mp_set.c \
+	$(TOMMATH_DIR)/bn_mp_set_int.c \
+	$(TOMMATH_DIR)/bn_mp_shrink.c \
+	$(TOMMATH_DIR)/bn_mp_sqr.c \
+	$(TOMMATH_DIR)/bn_mp_sqrt.c \
+	$(TOMMATH_DIR)/bn_mp_sub.c \
+	$(TOMMATH_DIR)/bn_mp_sub_d.c \
+	$(TOMMATH_DIR)/bn_mp_to_unsigned_bin.c \
+	$(TOMMATH_DIR)/bn_mp_to_unsigned_bin_n.c \
+	$(TOMMATH_DIR)/bn_mp_toom_mul.c \
+	$(TOMMATH_DIR)/bn_mp_toom_sqr.c \
+	$(TOMMATH_DIR)/bn_mp_toradix_n.c \
+	$(TOMMATH_DIR)/bn_mp_unsigned_bin_size.c \
+	$(TOMMATH_DIR)/bn_mp_xor.c \
+	$(TOMMATH_DIR)/bn_mp_zero.c \
+	$(TOMMATH_DIR)/bn_s_mp_add.c \
+	$(TOMMATH_DIR)/bn_s_mp_mul_digs.c \
+	$(TOMMATH_DIR)/bn_s_mp_sqr.c \
+	$(TOMMATH_DIR)/bn_s_mp_sub.c
+
+UNIX_HDRS = \
+	$(UNIX_DIR)/tclUnixPort.h
+#	$(UNIX_DIR)/tclConfig.h
+
+UNIX_SRCS = \
+	$(UNIX_DIR)/tclAppInit.c \
+	$(UNIX_DIR)/tclUnixChan.c \
+	$(UNIX_DIR)/tclUnixEvent.c \
+	$(UNIX_DIR)/tclUnixFCmd.c \
+	$(UNIX_DIR)/tclUnixFile.c \
+	$(UNIX_DIR)/tclUnixPipe.c \
+	$(UNIX_DIR)/tclUnixSock.c \
+	$(UNIX_DIR)/tclUnixTest.c \
+	$(UNIX_DIR)/tclUnixThrd.c \
+	$(UNIX_DIR)/tclUnixTime.c \
+	$(UNIX_DIR)/tclUnixInit.c \
+	$(UNIX_DIR)/tclUnixCompat.c
+
+NOTIFY_SRCS = \
+	$(UNIX_DIR)/tclUnixNotfy.c
+
+DL_SRCS = \
+	$(UNIX_DIR)/tclLoadAix.c \
+	$(UNIX_DIR)/tclLoadDl.c \
+	$(UNIX_DIR)/tclLoadDl2.c \
+	$(UNIX_DIR)/tclLoadDld.c \
+	$(UNIX_DIR)/tclLoadDyld.c \
+	$(GENERIC_DIR)/tclLoadNone.c \
+	$(UNIX_DIR)/tclLoadOSF.c \
+	$(UNIX_DIR)/tclLoadShl.c
+
+MAC_OSX_SRCS = \
+	$(MAC_OSX_DIR)/tclMacOSXBundle.c \
+	$(MAC_OSX_DIR)/tclMacOSXFCmd.c \
+	$(MAC_OSX_DIR)/tclMacOSXNotify.c
+
+CYGWIN_SRCS = \
+	$(TOP_DIR)/win/tclWinError.c
+
+DTRACE_HDR = tclDTrace.h
+
+DTRACE_SRC = $(GENERIC_DIR)/tclDTrace.d
+
+ZLIB_SRCS = \
+	$(ZLIB_DIR)/adler32.c \
+	$(ZLIB_DIR)/compress.c \
+	$(ZLIB_DIR)/crc32.c \
+	$(ZLIB_DIR)/deflate.c \
+	$(ZLIB_DIR)/infback.c \
+	$(ZLIB_DIR)/inffast.c \
+	$(ZLIB_DIR)/inflate.c \
+	$(ZLIB_DIR)/inftrees.c \
+	$(ZLIB_DIR)/trees.c \
+	$(ZLIB_DIR)/uncompr.c \
+	$(ZLIB_DIR)/zutil.c
+
+# Note: don't include DL_SRCS or MAC_OSX_SRCS in SRCS: most of those files
+# won't compile on the current machine, and they will cause problems for
+# things like "make depend".
+
+SRCS = $(GENERIC_SRCS) $(TOMMATH_SRCS) $(UNIX_SRCS) $(NOTIFY_SRCS) \
+	$(OO_SRCS) $(STUB_SRCS) @PLAT_SRCS@ @ZLIB_SRCS@
+
+#--------------------------------------------------------------------------
+# Start of rules
+#--------------------------------------------------------------------------
+
+all: binaries libraries doc packages
+
+binaries: ${LIB_FILE} ${TCL_EXE}
+
+libraries:
+
+doc:
+
+# The following target is configured by autoconf to generate either a shared
+# library or non-shared library for Tcl.
+${LIB_FILE}: ${STUB_LIB_FILE} ${OBJS}
+	rm -f $@
+	@MAKE_LIB@
+
+${STUB_LIB_FILE}: ${STUB_LIB_OBJS}
+	@if test "x${LIB_FILE}" = "xlibtcl${MAJOR_VERSION}.${MINOR_VERSION}.dll"; then \
+	    (cd ${TOP_DIR}/win; ${MAKE} winextensions); \
+	fi
+	rm -f $@
+	@MAKE_STUB_LIB@
+
+# Make target which outputs the list of the .o contained in the Tcl lib useful
+# to build a single big shared library containing Tcl and other extensions.
+# Used for the Tcl Plugin.  -- dl
+# The dependency on OBJS is not there because we just want the list of objects
+# here, not actually building them
+tclLibObjs:
+	@echo ${OBJS}
+# This targets actually build the objects needed for the lib in the above case
+objs: ${OBJS}
+
+${TCL_EXE}: ${TCLSH_OBJS} ${TCL_LIB_FILE} ${TCL_STUB_LIB_FILE}
+	${CC} ${CFLAGS} ${LDFLAGS} ${TCLSH_OBJS} \
+		@TCL_BUILD_LIB_SPEC@ ${TCL_STUB_LIB_FILE} ${LIBS} @EXTRA_TCLSH_LIBS@ \
+		${CC_SEARCH_FLAGS} -o ${TCL_EXE}
+
+# Must be empty so it doesn't conflict with rule for ${TCL_EXE} above
+${NATIVE_TCLSH}:
+
+Makefile: $(UNIX_DIR)/Makefile.in $(DLTEST_DIR)/Makefile.in
+	$(SHELL) config.status
+#tclConfig.h: $(UNIX_DIR)/tclConfig.h.in
+#	$(SHELL) config.status
+
+clean: clean-packages
+	rm -rf *.a *.o libtcl* core errs *~ \#* TAGS *.E a.out \
+		errors ${TCL_EXE} ${TCLTEST_EXE} lib.exp Tcl @DTRACE_HDR@
+	cd dltest ; $(MAKE) clean
+
+distclean: distclean-packages clean
+	rm -rf Makefile config.status config.cache config.log tclConfig.sh \
+		tclConfig.h *.plist Tcl.framework tcl.pc
+	cd dltest ; $(MAKE) distclean
+
+depend:
+	makedepend -- $(DEPEND_SWITCHES) -- $(SRCS)
+
+#--------------------------------------------------------------------------
+# The following target outputs the name of the top-level source directory for
+# Tcl (it is used by Tk's configure script, for example). The .NO_PARALLEL
+# line is needed to avoid problems under Sun's "pmake". Note: this target is
+# now obsolete (use the autoconf variable TCL_SRC_DIR from tclConfig.sh
+# instead).
+#--------------------------------------------------------------------------
+
+.NO_PARALLEL: topDirName
+topDirName:
+	@cd $(TOP_DIR); pwd
+
+#--------------------------------------------------------------------------
+# Rules for testing
+#--------------------------------------------------------------------------
+
+# Resetting the LIB_RUNTIME_DIR below is required so that the generated
+# tcltest executable gets the build directory burned into its ld search path.
+# This keeps tcltest from picking up an already installed version of the Tcl
+# library.
+SHELL_ENV =	@LD_LIBRARY_PATH_VAR@=`pwd`:${@LD_LIBRARY_PATH_VAR@} \
+		TCLLIBPATH="@abs_builddir@/pkgs" \
+		TCL_LIBRARY="${TCL_BUILDTIME_LIBRARY}"
+
+${TCLTEST_EXE}: ${TCLTEST_OBJS} ${TCL_LIB_FILE} ${TCL_STUB_LIB_FILE} ${BUILD_DLTEST}
+	$(MAKE) tcltest-real LIB_RUNTIME_DIR="`pwd`"
+
+tcltest-real:
+	${CC} ${CFLAGS} ${LDFLAGS} ${TCLTEST_OBJS} \
+		@TCL_BUILD_LIB_SPEC@ ${TCL_STUB_LIB_FILE} ${LIBS} @EXTRA_TCLSH_LIBS@ \
+		${CC_SEARCH_FLAGS} -o ${TCLTEST_EXE}
+
+# Note, in the targets below TCL_LIBRARY needs to be set or else "make test"
+# won't work in the case where the compilation directory isn't the same as the
+# source directory.
+#
+# Specifying TESTFLAGS on the command line is the standard way to pass args to
+# tcltest, ie:
+#	% make test TESTFLAGS="-verbose bps -file fileName.test"
+
+test: test-tcl test-packages
+
+test-tcl: ${TCLTEST_EXE}
+	$(SHELL_ENV) ./${TCLTEST_EXE} $(TOP_DIR)/tests/all.tcl $(TESTFLAGS)
+
+gdb-test: ${TCLTEST_EXE}
+	@echo "set env @LD_LIBRARY_PATH_VAR@=`pwd`:$${@LD_LIBRARY_PATH_VAR@}" > gdb.run
+	@echo "set env TCL_LIBRARY=${TCL_BUILDTIME_LIBRARY}" >> gdb.run
+	@echo "set args $(TOP_DIR)/tests/all.tcl $(TESTFLAGS) -singleproc 1" >> gdb.run
+	$(GDB) ./${TCLTEST_EXE} --command=gdb.run
+	rm gdb.run
+
+# Useful target to launch a built tcltest with the proper path,...
+runtest: ${TCLTEST_EXE}
+	$(SHELL_ENV) ./${TCLTEST_EXE}
+
+# Useful target for running the test suite with an unwritable current
+# directory...
+ro-test: ${TCLTEST_EXE}
+	echo 'exec chmod -w .;package require tcltest;tcltest::temporaryDirectory /tmp;source ../tests/all.tcl;exec chmod +w .' | $(SHELL_ENV) ./${TCLTEST_EXE}
+
+# The following target generates the shared libraries in dltest/ that are used
+# for testing; they are included as part of the "tcltest" target (via the
+# BUILD_DLTEST variable) if dynamic loading is supported on this platform. The
+# Makefile in the dltest subdirectory creates the dltest.marker file in this
+# directory after a successful build.
+
+dltest.marker: ${STUB_LIB_FILE}
+	cd dltest ; $(MAKE)
+
+#--------------------------------------------------------------------------
+# Rules for running a shell before installation
+#--------------------------------------------------------------------------
+
+# This target can be used to run tclsh from the build directory
+# via `make shell SCRIPT=/tmp/foo.tcl`
+shell: ${TCL_EXE}
+	$(SHELL_ENV) ./${TCL_EXE} $(SCRIPT)
+
+# This target can be used to run tclsh inside either gdb or insight
+gdb: ${TCL_EXE}
+	$(SHELL_ENV) $(GDB) ./${TCL_EXE}
+
+valgrind: ${TCL_EXE} ${TCLTEST_EXE}
+	$(SHELL_ENV) $(VALGRIND) $(VALGRINDARGS) ./${TCLTEST_EXE} $(TOP_DIR)/tests/all.tcl -singleproc 1 -constraints valgrind $(TESTFLAGS)
+
+valgrindshell: ${TCL_EXE}
+	$(SHELL_ENV) $(VALGRIND) $(VALGRINDARGS) ./${TCL_EXE} $(SCRIPT)
+
+trace-shell: ${TCL_EXE}
+	$(SHELL_ENV) ${TRACE} $(TRACE_OPTS) ./${TCL_EXE} $(SCRIPT)
+
+trace-test: ${TCLTEST_EXE}
+	$(SHELL_ENV) ${TRACE} $(TRACE_OPTS) ./${TCLTEST_EXE} $(TOP_DIR)/tests/all.tcl -singleproc 1 $(TESTFLAGS)
+
+#--------------------------------------------------------------------------
+# Installation rules
+#--------------------------------------------------------------------------
+
+INSTALL_BASE_TARGETS = install-binaries install-libraries install-msgs $(INSTALL_TZDATA)
+INSTALL_DOC_TARGETS = install-doc
+INSTALL_PACKAGE_TARGETS = install-packages
+INSTALL_DEV_TARGETS = install-headers
+INSTALL_EXTRA_TARGETS = @EXTRA_INSTALL@
+INSTALL_TARGETS = $(INSTALL_BASE_TARGETS) $(INSTALL_DOC_TARGETS) $(INSTALL_DEV_TARGETS) \
+		  $(INSTALL_PACKAGE_TARGETS) $(INSTALL_EXTRA_TARGETS)
+
+install: $(INSTALL_TARGETS)
+
+install-strip:
+	$(MAKE) $(INSTALL_TARGETS) \
+		INSTALL_PROGRAM="$(INSTALL_PROGRAM) ${INSTALL_STRIP_PROGRAM}" \
+		INSTALL_LIBRARY="$(INSTALL_LIBRARY) ${INSTALL_STRIP_LIBRARY}"
+
+install-binaries: binaries
+	@for i in "$(LIB_INSTALL_DIR)" "$(BIN_INSTALL_DIR)" \
+		"$(CONFIG_INSTALL_DIR)"; \
+	    do \
+	    if [ ! -d "$$i" ] ; then \
+		echo "Making directory $$i"; \
+		$(INSTALL_DATA_DIR) "$$i"; \
+		else true; \
+		fi; \
+	    done;
+	@echo "Installing $(LIB_FILE) to $(DLL_INSTALL_DIR)/"
+	@@INSTALL_LIB@
+	@chmod 555 "$(DLL_INSTALL_DIR)/$(LIB_FILE)"
+	@echo "Installing ${TCL_EXE} as $(BIN_INSTALL_DIR)/tclsh$(VERSION)${EXE_SUFFIX}"
+	@$(INSTALL_PROGRAM) ${TCL_EXE} "$(BIN_INSTALL_DIR)/tclsh$(VERSION)${EXE_SUFFIX}"
+	@echo "Installing tclConfig.sh to $(CONFIG_INSTALL_DIR)/"
+	@$(INSTALL_DATA) tclConfig.sh "$(CONFIG_INSTALL_DIR)/tclConfig.sh"
+	@echo "Installing tclooConfig.sh to $(CONFIG_INSTALL_DIR)/"
+	@$(INSTALL_DATA) $(UNIX_DIR)/tclooConfig.sh \
+		"$(CONFIG_INSTALL_DIR)/tclooConfig.sh"
+	@if test "$(STUB_LIB_FILE)" != "" ; then \
+	    echo "Installing $(STUB_LIB_FILE) to $(LIB_INSTALL_DIR)/"; \
+	    @INSTALL_STUB_LIB@ ; \
+	fi
+	@EXTRA_INSTALL_BINARIES@
+	@echo "Installing pkg-config file to $(LIB_INSTALL_DIR)/pkgconfig/"
+	@$(INSTALL_DATA_DIR) $(LIB_INSTALL_DIR)/pkgconfig
+	@$(INSTALL_DATA) tcl.pc $(LIB_INSTALL_DIR)/pkgconfig/tcl.pc
+
+install-libraries: libraries
+	@for i in "$(SCRIPT_INSTALL_DIR)"; \
+	    do \
+	    if [ ! -d "$$i" ] ; then \
+		echo "Making directory $$i"; \
+		$(INSTALL_DATA_DIR) "$$i"; \
+		else true; \
+		fi; \
+	    done;
+	@for i in opt0.4 http1.0 encoding ../tcl8 ../tcl8/8.4  ../tcl8/8.4/platform ../tcl8/8.5 ../tcl8/8.6; \
+	    do \
+	    if [ ! -d "$(SCRIPT_INSTALL_DIR)"/$$i ] ; then \
+		echo "Making directory $(SCRIPT_INSTALL_DIR)/$$i"; \
+		$(INSTALL_DATA_DIR) "$(SCRIPT_INSTALL_DIR)"/$$i; \
+		else true; \
+		fi; \
+	    done;
+	@echo "Installing library files to $(SCRIPT_INSTALL_DIR)/";
+	@for i in $(TOP_DIR)/library/*.tcl $(TOP_DIR)/library/tclIndex \
+		$(UNIX_DIR)/tclAppInit.c @LDAIX_SRC@ @DTRACE_SRC@; \
+	    do \
+	    $(INSTALL_DATA) $$i "$(SCRIPT_INSTALL_DIR)"; \
+	    done;
+	@echo "Installing package http1.0 files to $(SCRIPT_INSTALL_DIR)/http1.0/";
+	@for i in $(TOP_DIR)/library/http1.0/*.tcl ; \
+	    do \
+	    $(INSTALL_DATA) $$i "$(SCRIPT_INSTALL_DIR)"/http1.0; \
+	    done;
+	@echo "Installing package http 2.9.0 as a Tcl Module";
+	@$(INSTALL_DATA) $(TOP_DIR)/library/http/http.tcl "$(SCRIPT_INSTALL_DIR)"/../tcl8/8.6/http-2.9.0.tm;
+	@echo "Installing package opt0.4 files to $(SCRIPT_INSTALL_DIR)/opt0.4/";
+	@for i in $(TOP_DIR)/library/opt/*.tcl ; \
+	    do \
+	    $(INSTALL_DATA) $$i "$(SCRIPT_INSTALL_DIR)"/opt0.4; \
+	    done;
+	@echo "Installing package msgcat 1.6.1 as a Tcl Module";
+	@$(INSTALL_DATA) $(TOP_DIR)/library/msgcat/msgcat.tcl "$(SCRIPT_INSTALL_DIR)"/../tcl8/8.5/msgcat-1.6.1.tm;
+	@echo "Installing package tcltest 2.5.0 as a Tcl Module";
+	@$(INSTALL_DATA) $(TOP_DIR)/library/tcltest/tcltest.tcl "$(SCRIPT_INSTALL_DIR)"/../tcl8/8.5/tcltest-2.5.0.tm;
+
+	@echo "Installing package platform 1.0.14 as a Tcl Module";
+	@$(INSTALL_DATA) $(TOP_DIR)/library/platform/platform.tcl "$(SCRIPT_INSTALL_DIR)"/../tcl8/8.4/platform-1.0.14.tm;
+	@echo "Installing package platform::shell 1.1.4 as a Tcl Module";
+	@$(INSTALL_DATA) $(TOP_DIR)/library/platform/shell.tcl "$(SCRIPT_INSTALL_DIR)"/../tcl8/8.4/platform/shell-1.1.4.tm;
+
+	@echo "Installing encoding files to $(SCRIPT_INSTALL_DIR)/encoding/";
+	@for i in $(TOP_DIR)/library/encoding/*.enc ; do \
+		$(INSTALL_DATA) $$i "$(SCRIPT_INSTALL_DIR)"/encoding; \
+	done;
+	@if [ -n "$(TCL_MODULE_PATH)" -a -f $(TOP_DIR)/library/tm.tcl ]; then \
+	    echo "Customizing tcl module path"; \
+	    echo "if {![interp issafe]} { ::tcl::tm::roots {$(TCL_MODULE_PATH)} }" >> \
+	        "$(SCRIPT_INSTALL_DIR)"/tm.tcl; \
+	fi
+
+install-tzdata:
+	@for i in tzdata; \
+	    do \
+	    if [ ! -d "$(SCRIPT_INSTALL_DIR)"/$$i ] ; then \
+		echo "Making directory $(SCRIPT_INSTALL_DIR)/$$i"; \
+		$(INSTALL_DATA_DIR) "$(SCRIPT_INSTALL_DIR)"/$$i; \
+		else true; \
+		fi; \
+	    done;
+	@echo "Installing time zone files to $(SCRIPT_INSTALL_DIR)/tzdata/"
+	@for i in $(TOP_DIR)/library/tzdata/* ; do \
+	    if [ -d $$i ] ; then \
+		ii=`basename $$i`; \
+		if [ ! -d "$(SCRIPT_INSTALL_DIR)"/tzdata/$$ii ] ; then \
+		    $(INSTALL_DATA_DIR) "$(SCRIPT_INSTALL_DIR)"/tzdata/$$ii; \
+		fi; \
+		for j in $$i/* ; do \
+		    if [ -d $$j ] ; then \
+			jj=`basename $$j`; \
+			if [ ! -d "$(SCRIPT_INSTALL_DIR)"/tzdata/$$ii/$$jj ] ; then \
+			    $(INSTALL_DATA_DIR) "$(SCRIPT_INSTALL_DIR)"/tzdata/$$ii/$$jj; \
+			fi; \
+			for k in $$j/* ; do \
+			    $(INSTALL_DATA) $$k "$(SCRIPT_INSTALL_DIR)"/tzdata/$$ii/$$jj; \
+			done; \
+		    else \
+			$(INSTALL_DATA) $$j "$(SCRIPT_INSTALL_DIR)"/tzdata/$$ii; \
+		    fi; \
+		done; \
+	    else \
+		$(INSTALL_DATA) $$i "$(SCRIPT_INSTALL_DIR)"/tzdata; \
+	    fi; \
+	done;
+
+install-msgs:
+	@for i in msgs; \
+	    do \
+	    if [ ! -d "$(SCRIPT_INSTALL_DIR)"/$$i ] ; then \
+		echo "Making directory $(SCRIPT_INSTALL_DIR)/$$i"; \
+		$(INSTALL_DATA_DIR) "$(SCRIPT_INSTALL_DIR)"/$$i; \
+		else true; \
+		fi; \
+	    done;
+	@echo "Installing message catalog files to $(SCRIPT_INSTALL_DIR)/msgs/"
+	@for i in $(TOP_DIR)/library/msgs/*.msg ; do \
+		$(INSTALL_DATA) $$i "$(SCRIPT_INSTALL_DIR)"/msgs; \
+	done;
+
+install-doc: doc
+	@for i in "$(MAN_INSTALL_DIR)" "$(MAN1_INSTALL_DIR)" "$(MAN3_INSTALL_DIR)" "$(MANN_INSTALL_DIR)" ; \
+	    do \
+	    if [ ! -d "$$i" ] ; then \
+		echo "Making directory $$i"; \
+		$(INSTALL_DATA_DIR) "$$i"; \
+		else true; \
+		fi; \
+	    done;
+	@echo "Installing and cross-linking top-level (.1) docs to $(MAN1_INSTALL_DIR)/";
+	@for i in $(TOP_DIR)/doc/*.1; do \
+	    $(SHELL) $(UNIX_DIR)/installManPage $(MAN_FLAGS) $$i "$(MAN1_INSTALL_DIR)"; \
+	done
+
+	@echo "Installing and cross-linking C API (.3) docs to $(MAN3_INSTALL_DIR)/";
+	@for i in $(TOP_DIR)/doc/*.3; do \
+	    $(SHELL) $(UNIX_DIR)/installManPage $(MAN_FLAGS) $$i "$(MAN3_INSTALL_DIR)"; \
+	done
+
+	@echo "Installing and cross-linking command (.n) docs to $(MANN_INSTALL_DIR)/";
+	@for i in $(TOP_DIR)/doc/*.n; do \
+	    $(SHELL) $(UNIX_DIR)/installManPage $(MAN_FLAGS) $$i "$(MANN_INSTALL_DIR)"; \
+	done
+
+install-headers:
+	@for i in "$(INCLUDE_INSTALL_DIR)"; \
+	    do \
+	    if [ ! -d "$$i" ] ; then \
+		echo "Making directory $$i"; \
+		$(INSTALL_DATA_DIR) "$$i"; \
+		else true; \
+		fi; \
+	    done;
+	@echo "Installing header files to $(INCLUDE_INSTALL_DIR)/";
+	@for i in $(GENERIC_DIR)/tcl.h $(GENERIC_DIR)/tclDecls.h \
+		$(GENERIC_DIR)/tclOO.h $(GENERIC_DIR)/tclOODecls.h \
+		$(GENERIC_DIR)/tclPlatDecls.h \
+		$(GENERIC_DIR)/tclTomMath.h \
+		$(GENERIC_DIR)/tclTomMathDecls.h ; \
+	    do \
+	    $(INSTALL_DATA) $$i "$(INCLUDE_INSTALL_DIR)"; \
+	    done;
+
+# Optional target to install private headers
+install-private-headers:
+	@for i in "$(PRIVATE_INCLUDE_INSTALL_DIR)"; \
+	    do \
+	    if [ ! -d "$$i" ] ; then \
+		echo "Making directory $$i"; \
+		$(INSTALL_DATA_DIR) "$$i"; \
+		else true; \
+		fi; \
+	    done;
+	@echo "Installing private header files to $(PRIVATE_INCLUDE_INSTALL_DIR)/";
+	@for i in $(GENERIC_DIR)/tclInt.h $(GENERIC_DIR)/tclIntDecls.h \
+		$(GENERIC_DIR)/tclIntPlatDecls.h $(GENERIC_DIR)/tclPort.h \
+		$(GENERIC_DIR)/tclOOInt.h $(GENERIC_DIR)/tclOOIntDecls.h \
+		$(UNIX_DIR)/tclUnixPort.h; \
+	    do \
+	    $(INSTALL_DATA) $$i "$(PRIVATE_INCLUDE_INSTALL_DIR)"; \
+	    done;
+	@if test -f tclConfig.h; then\
+	    $(INSTALL_DATA) tclConfig.h "$(PRIVATE_INCLUDE_INSTALL_DIR)"; \
+	    fi;
+
+#--------------------------------------------------------------------------
+# Rules for how to compile C files
+#--------------------------------------------------------------------------
+
+# Test binaries. The rules for tclTestInit.o and xtTestInit.o are complicated
+# because they are compiled from tclAppInit.c. Can't use the "-o" option
+# because this doesn't work on some strange compilers (e.g. UnixWare).
+#
+# To enable concurrent parallel make of tclsh and tcltest resp xttest, these
+# targets have to depend on tclsh, this ensures that linking of tclsh with
+# tclAppInit.o does not execute concurrently with the renaming and recompiling
+# of that same object file in the targets below.
+
+tclTestInit.o: $(UNIX_DIR)/tclAppInit.c ${TCL_EXE}
+	@if test -f tclAppInit.o ; then \
+	    rm -f tclAppInit.sav; \
+	    mv tclAppInit.o tclAppInit.sav; \
+	fi;
+	$(CC) -c $(APP_CC_SWITCHES) \
+		-DTCL_BUILDTIME_LIBRARY="\"${TCL_BUILDTIME_LIBRARY}\"" \
+		-DTCL_TEST $(UNIX_DIR)/tclAppInit.c
+	rm -f tclTestInit.o
+	mv tclAppInit.o tclTestInit.o
+	@if test -f tclAppInit.sav ; then \
+	    mv tclAppInit.sav tclAppInit.o; \
+	fi;
+
+xtTestInit.o: $(UNIX_DIR)/tclAppInit.c ${TCL_EXE}
+	@if test -f tclAppInit.o ; then \
+	    rm -f tclAppInit.sav; \
+	    mv tclAppInit.o tclAppInit.sav; \
+	fi;
+	$(CC) -c $(APP_CC_SWITCHES) \
+		-DTCL_BUILDTIME_LIBRARY="\"${TCL_BUILDTIME_LIBRARY}\"" \
+		-DTCL_TEST -DTCL_XT_TEST $(UNIX_DIR)/tclAppInit.c
+	rm -f xtTestInit.o
+	mv tclAppInit.o xtTestInit.o
+	@if test -f tclAppInit.sav ; then \
+	    mv tclAppInit.sav tclAppInit.o; \
+	fi;
+
+# Object files used on all Unix systems:
+
+REGHDRS=$(GENERIC_DIR)/regex.h $(GENERIC_DIR)/regguts.h \
+		$(GENERIC_DIR)/regcustom.h
+TCLREHDRS=$(GENERIC_DIR)/tclRegexp.h
+COMPILEHDR=$(GENERIC_DIR)/tclCompile.h
+FSHDR=$(GENERIC_DIR)/tclFileSystem.h
+IOHDR=$(GENERIC_DIR)/tclIO.h
+MATHHDRS=$(GENERIC_DIR)/tommath.h $(GENERIC_DIR)/tclTomMath.h
+PARSEHDR=$(GENERIC_DIR)/tclParse.h
+NREHDR=$(GENERIC_DIR)/tclInt.h
+TRIMHDR=$(GENERIC_DIR)/tclStringTrim.h
+
+regcomp.o: $(REGHDRS) $(GENERIC_DIR)/regcomp.c $(GENERIC_DIR)/regc_lex.c \
+		$(GENERIC_DIR)/regc_color.c $(GENERIC_DIR)/regc_locale.c \
+		$(GENERIC_DIR)/regc_nfa.c $(GENERIC_DIR)/regc_cvec.c
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/regcomp.c
+
+regexec.o: $(REGHDRS) $(GENERIC_DIR)/regexec.c $(GENERIC_DIR)/rege_dfa.c
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/regexec.c
+
+regfree.o: $(REGHDRS) $(GENERIC_DIR)/regfree.c
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/regfree.c
+
+regerror.o: $(REGHDRS) $(GENERIC_DIR)/regerrs.h $(GENERIC_DIR)/regerror.c
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/regerror.c
+
+tclAppInit.o: $(UNIX_DIR)/tclAppInit.c
+	$(CC) -c $(APP_CC_SWITCHES) $(UNIX_DIR)/tclAppInit.c
+
+tclAlloc.o: $(GENERIC_DIR)/tclAlloc.c
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclAlloc.c
+
+tclAssembly.o: $(GENERIC_DIR)/tclAssembly.c $(COMPILEHDR)
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclAssembly.c
+
+tclAsync.o: $(GENERIC_DIR)/tclAsync.c
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclAsync.c
+
+tclBasic.o: $(GENERIC_DIR)/tclBasic.c $(COMPILEHDR) $(MATHHDRS) $(NREHDR)
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclBasic.c
+
+tclBinary.o: $(GENERIC_DIR)/tclBinary.c
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclBinary.c
+
+tclCkalloc.o: $(GENERIC_DIR)/tclCkalloc.c
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclCkalloc.c
+
+tclClock.o: $(GENERIC_DIR)/tclClock.c
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclClock.c
+
+tclCmdAH.o: $(GENERIC_DIR)/tclCmdAH.c
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclCmdAH.c
+
+tclCmdIL.o: $(GENERIC_DIR)/tclCmdIL.c $(TCLREHDRS)
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclCmdIL.c
+
+tclCmdMZ.o: $(GENERIC_DIR)/tclCmdMZ.c $(TCLREHDRS) $(TRIMHDR)
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclCmdMZ.c
+
+tclDate.o: $(GENERIC_DIR)/tclDate.c
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclDate.c
+
+tclCompCmds.o: $(GENERIC_DIR)/tclCompCmds.c $(COMPILEHDR)
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclCompCmds.c
+
+tclCompCmdsGR.o: $(GENERIC_DIR)/tclCompCmdsGR.c $(COMPILEHDR)
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclCompCmdsGR.c
+
+tclCompCmdsSZ.o: $(GENERIC_DIR)/tclCompCmdsSZ.c $(COMPILEHDR) $(TRIMHDR)
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclCompCmdsSZ.c
+
+tclCompExpr.o: $(GENERIC_DIR)/tclCompExpr.c $(COMPILEHDR)
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclCompExpr.c
+
+tclCompile.o: $(GENERIC_DIR)/tclCompile.c $(COMPILEHDR)
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclCompile.c
+
+tclConfig.o: $(GENERIC_DIR)/tclConfig.c
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclConfig.c
+
+tclDictObj.o: $(GENERIC_DIR)/tclDictObj.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclDictObj.c
+
+tclDisassemble.o: $(GENERIC_DIR)/tclDisassemble.c $(COMPILEHDR)
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclDisassemble.c
+
+tclEncoding.o: $(GENERIC_DIR)/tclEncoding.c
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclEncoding.c
+
+tclEnsemble.o: $(GENERIC_DIR)/tclEnsemble.c $(COMPILEHDR)
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclEnsemble.c
+
+tclEnv.o: $(GENERIC_DIR)/tclEnv.c
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclEnv.c
+
+tclEvent.o: $(GENERIC_DIR)/tclEvent.c
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclEvent.c
+
+tclExecute.o: $(GENERIC_DIR)/tclExecute.c $(COMPILEHDR) $(MATHHDRS) $(NREHDR)
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclExecute.c
+
+tclFCmd.o: $(GENERIC_DIR)/tclFCmd.c
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclFCmd.c
+
+tclFileName.o: $(GENERIC_DIR)/tclFileName.c $(FSHDR) $(TCLREHDRS)
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclFileName.c
+
+tclGet.o: $(GENERIC_DIR)/tclGet.c
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclGet.c
+
+tclHash.o: $(GENERIC_DIR)/tclHash.c
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclHash.c
+
+tclHistory.o: $(GENERIC_DIR)/tclHistory.c
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclHistory.c
+
+tclIndexObj.o: $(GENERIC_DIR)/tclIndexObj.c
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclIndexObj.c
+
+tclInterp.o: $(GENERIC_DIR)/tclInterp.c
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclInterp.c
+
+tclIO.o: $(GENERIC_DIR)/tclIO.c $(IOHDR)
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclIO.c
+
+tclIOCmd.o: $(GENERIC_DIR)/tclIOCmd.c
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclIOCmd.c
+
+tclIOGT.o: $(GENERIC_DIR)/tclIOGT.c $(IOHDR)
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclIOGT.c
+
+tclIOSock.o: $(GENERIC_DIR)/tclIOSock.c
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclIOSock.c
+
+tclIOUtil.o: $(GENERIC_DIR)/tclIOUtil.c $(FSHDR)
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclIOUtil.c
+
+tclIORChan.o: $(GENERIC_DIR)/tclIORChan.c $(IOHDR)
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclIORChan.c
+
+tclIORTrans.o: $(GENERIC_DIR)/tclIORTrans.c $(IOHDR)
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclIORTrans.c
+
+tclLink.o: $(GENERIC_DIR)/tclLink.c
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclLink.c
+
+tclListObj.o: $(GENERIC_DIR)/tclListObj.c
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclListObj.c
+
+tclLiteral.o: $(GENERIC_DIR)/tclLiteral.c $(COMPILEHDR)
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclLiteral.c
+
+tclObj.o: $(GENERIC_DIR)/tclObj.c $(COMPILEHDR) $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclObj.c
+
+tclOptimize.o: $(GENERIC_DIR)/tclOptimize.c $(COMPILEHDR)
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclOptimize.c
+
+tclLoad.o: $(GENERIC_DIR)/tclLoad.c
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclLoad.c
+
+tclLoadAix.o: $(UNIX_DIR)/tclLoadAix.c
+	$(CC) -c $(CC_SWITCHES) $(UNIX_DIR)/tclLoadAix.c
+
+tclLoadDl.o: $(UNIX_DIR)/tclLoadDl.c
+	$(CC) -c $(CC_SWITCHES) $(UNIX_DIR)/tclLoadDl.c
+
+tclLoadDl2.o: $(UNIX_DIR)/tclLoadDl2.c
+	$(CC) -c $(CC_SWITCHES) $(UNIX_DIR)/tclLoadDl2.c
+
+tclLoadDld.o: $(UNIX_DIR)/tclLoadDld.c
+	$(CC) -c $(CC_SWITCHES) $(UNIX_DIR)/tclLoadDld.c
+
+tclLoadDyld.o: $(UNIX_DIR)/tclLoadDyld.c
+	$(CC) -c $(CC_SWITCHES) $(UNIX_DIR)/tclLoadDyld.c
+
+tclLoadNone.o: $(GENERIC_DIR)/tclLoadNone.c
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclLoadNone.c
+
+tclLoadOSF.o: $(UNIX_DIR)/tclLoadOSF.c
+	$(CC) -c $(CC_SWITCHES) $(UNIX_DIR)/tclLoadOSF.c
+
+tclLoadShl.o: $(UNIX_DIR)/tclLoadShl.c
+	$(CC) -c $(CC_SWITCHES) $(UNIX_DIR)/tclLoadShl.c
+
+tclMain.o: $(GENERIC_DIR)/tclMain.c
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclMain.c
+
+tclNamesp.o: $(GENERIC_DIR)/tclNamesp.c $(COMPILEHDR)
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclNamesp.c
+
+tclNotify.o: $(GENERIC_DIR)/tclNotify.c
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclNotify.c
+
+tclOO.o: $(GENERIC_DIR)/tclOO.c
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclOO.c
+
+tclOOBasic.o: $(GENERIC_DIR)/tclOOBasic.c
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclOOBasic.c
+
+tclOOCall.o: $(GENERIC_DIR)/tclOOCall.c
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclOOCall.c
+
+tclOODefineCmds.o: $(GENERIC_DIR)/tclOODefineCmds.c
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclOODefineCmds.c
+
+tclOOInfo.o: $(GENERIC_DIR)/tclOOInfo.c
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclOOInfo.c
+
+tclOOMethod.o: $(GENERIC_DIR)/tclOOMethod.c
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclOOMethod.c
+
+tclOOStubInit.o: $(GENERIC_DIR)/tclOOStubInit.c
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclOOStubInit.c
+
+tclParse.o: $(GENERIC_DIR)/tclParse.c $(PARSEHDR)
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclParse.c
+
+tclPanic.o: $(GENERIC_DIR)/tclPanic.c
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclPanic.c
+
+tclPathObj.o: $(GENERIC_DIR)/tclPathObj.c $(FSHDR)
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclPathObj.c
+
+tclPipe.o: $(GENERIC_DIR)/tclPipe.c
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclPipe.c
+
+tclPkg.o: $(GENERIC_DIR)/tclPkg.c
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclPkg.c
+
+# TIP #59, embedding of configuration information into the binary library.
+#
+# Part of Tcl's configuration information are the paths where it was installed
+# and where it will look for its libraries (which can be different). We derive
+# this information from the variables which can be overridden by the user. As
+# every path can be configured separately we do not remember one general
+# prefix/exec_prefix but all the different paths individually.
+
+tclPkgConfig.o: $(GENERIC_DIR)/tclPkgConfig.c
+	$(CC) -c $(CC_SWITCHES)					\
+		-DCFG_INSTALL_LIBDIR="\"$(LIB_INSTALL_DIR)\"" \
+		-DCFG_INSTALL_BINDIR="\"$(BIN_INSTALL_DIR)\"" \
+		-DCFG_INSTALL_SCRDIR="\"$(SCRIPT_INSTALL_DIR)\"" \
+		-DCFG_INSTALL_INCDIR="\"$(INCLUDE_INSTALL_DIR)\"" \
+		-DCFG_INSTALL_DOCDIR="\"$(MAN_INSTALL_DIR)\"" \
+		\
+		-DCFG_RUNTIME_LIBDIR="\"$(libdir)\"" \
+		-DCFG_RUNTIME_BINDIR="\"$(bindir)\"" \
+		-DCFG_RUNTIME_SCRDIR="\"$(TCL_LIBRARY)\"" \
+		-DCFG_RUNTIME_INCDIR="\"$(includedir)\"" \
+		-DCFG_RUNTIME_DOCDIR="\"$(mandir)\"" \
+		\
+		$(GENERIC_DIR)/tclPkgConfig.c
+
+tclPosixStr.o: $(GENERIC_DIR)/tclPosixStr.c
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclPosixStr.c
+
+tclPreserve.o: $(GENERIC_DIR)/tclPreserve.c
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclPreserve.c
+
+tclProc.o: $(GENERIC_DIR)/tclProc.c $(COMPILEHDR) $(NREHDR)
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclProc.c
+
+tclRegexp.o: $(GENERIC_DIR)/tclRegexp.c $(TCLREHDRS)
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclRegexp.c
+
+tclResolve.o: $(GENERIC_DIR)/tclResolve.c
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclResolve.c
+
+tclResult.o: $(GENERIC_DIR)/tclResult.c
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclResult.c
+
+tclScan.o: $(GENERIC_DIR)/tclScan.c
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclScan.c
+
+tclStringObj.o: $(GENERIC_DIR)/tclStringObj.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclStringObj.c
+
+tclStrToD.o: $(GENERIC_DIR)/tclStrToD.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclStrToD.c
+
+tclStubInit.o: $(GENERIC_DIR)/tclStubInit.c
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclStubInit.c
+
+tclTrace.o: $(GENERIC_DIR)/tclTrace.c
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclTrace.c
+
+tclUtil.o: $(GENERIC_DIR)/tclUtil.c $(PARSEHDR) $(TRIMHDR)
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclUtil.c
+
+tclUtf.o: $(GENERIC_DIR)/tclUtf.c $(GENERIC_DIR)/tclUniData.c
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclUtf.c
+
+tclVar.o: $(GENERIC_DIR)/tclVar.c
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclVar.c
+
+tclZlib.o: $(GENERIC_DIR)/tclZlib.c
+	$(CC) -c $(CC_SWITCHES) $(ZLIB_INCLUDE) $(GENERIC_DIR)/tclZlib.c
+
+tclTest.o: $(GENERIC_DIR)/tclTest.c $(IOHDR) $(TCLREHDRS)
+	$(CC) -c $(APP_CC_SWITCHES) $(GENERIC_DIR)/tclTest.c
+
+tclTestObj.o: $(GENERIC_DIR)/tclTestObj.c $(MATHHDRS)
+	$(CC) -c $(APP_CC_SWITCHES) $(GENERIC_DIR)/tclTestObj.c
+
+tclTestProcBodyObj.o: $(GENERIC_DIR)/tclTestProcBodyObj.c
+	$(CC) -c $(APP_CC_SWITCHES) $(GENERIC_DIR)/tclTestProcBodyObj.c
+
+tclTimer.o: $(GENERIC_DIR)/tclTimer.c
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclTimer.c
+
+tclThread.o: $(GENERIC_DIR)/tclThread.c
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclThread.c
+
+tclThreadAlloc.o: $(GENERIC_DIR)/tclThreadAlloc.c
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclThreadAlloc.c
+
+tclThreadJoin.o: $(GENERIC_DIR)/tclThreadJoin.c
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclThreadJoin.c
+
+tclThreadStorage.o: $(GENERIC_DIR)/tclThreadStorage.c
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclThreadStorage.c
+
+tclThreadTest.o: $(GENERIC_DIR)/tclThreadTest.c
+	$(CC) -c $(APP_CC_SWITCHES) $(GENERIC_DIR)/tclThreadTest.c
+
+tclTomMathInterface.o: $(GENERIC_DIR)/tclTomMathInterface.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclTomMathInterface.c
+
+bncore.o: $(TOMMATH_DIR)/bncore.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bncore.c
+
+bn_reverse.o: $(TOMMATH_DIR)/bn_reverse.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_reverse.c
+
+bn_fast_s_mp_mul_digs.o: $(TOMMATH_DIR)/bn_fast_s_mp_mul_digs.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_fast_s_mp_mul_digs.c
+
+bn_fast_s_mp_sqr.o: $(TOMMATH_DIR)/bn_fast_s_mp_sqr.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_fast_s_mp_sqr.c
+
+bn_mp_add.o: $(TOMMATH_DIR)/bn_mp_add.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_mp_add.c
+
+bn_mp_add_d.o: $(TOMMATH_DIR)/bn_mp_add_d.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_mp_add_d.c
+
+bn_mp_and.o: $(TOMMATH_DIR)/bn_mp_and.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_mp_and.c
+
+bn_mp_clamp.o: $(TOMMATH_DIR)/bn_mp_clamp.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_mp_clamp.c
+
+bn_mp_clear.o: $(TOMMATH_DIR)/bn_mp_clear.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_mp_clear.c
+
+bn_mp_clear_multi.o: $(TOMMATH_DIR)/bn_mp_clear_multi.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_mp_clear_multi.c
+
+bn_mp_cmp.o: $(TOMMATH_DIR)/bn_mp_cmp.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_mp_cmp.c
+
+bn_mp_cmp_d.o: $(TOMMATH_DIR)/bn_mp_cmp_d.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_mp_cmp_d.c
+
+bn_mp_cmp_mag.o: $(TOMMATH_DIR)/bn_mp_cmp_mag.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_mp_cmp_mag.c
+
+bn_mp_cnt_lsb.o: $(TOMMATH_DIR)/bn_mp_cnt_lsb.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_mp_cnt_lsb.c
+
+bn_mp_copy.o: $(TOMMATH_DIR)/bn_mp_copy.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_mp_copy.c
+
+bn_mp_count_bits.o: $(TOMMATH_DIR)/bn_mp_count_bits.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_mp_count_bits.c
+
+bn_mp_div.o: $(TOMMATH_DIR)/bn_mp_div.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_mp_div.c
+
+bn_mp_div_d.o: $(TOMMATH_DIR)/bn_mp_div_d.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_mp_div_d.c
+
+bn_mp_div_2.o: $(TOMMATH_DIR)/bn_mp_div_2.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_mp_div_2.c
+
+bn_mp_div_2d.o: $(TOMMATH_DIR)/bn_mp_div_2d.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_mp_div_2d.c
+
+bn_mp_div_3.o: $(TOMMATH_DIR)/bn_mp_div_3.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_mp_div_3.c
+
+bn_mp_exch.o: $(TOMMATH_DIR)/bn_mp_exch.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_mp_exch.c
+
+bn_mp_expt_d.o: $(TOMMATH_DIR)/bn_mp_expt_d.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_mp_expt_d.c
+
+bn_mp_grow.o: $(TOMMATH_DIR)/bn_mp_grow.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_mp_grow.c
+
+bn_mp_init.o: $(TOMMATH_DIR)/bn_mp_init.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_mp_init.c
+
+bn_mp_init_copy.o: $(TOMMATH_DIR)/bn_mp_init_copy.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_mp_init_copy.c
+
+bn_mp_init_multi.o: $(TOMMATH_DIR)/bn_mp_init_multi.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_mp_init_multi.c
+
+bn_mp_init_set.o: $(TOMMATH_DIR)/bn_mp_init_set.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_mp_init_set.c
+
+bn_mp_init_set_int.o: $(TOMMATH_DIR)/bn_mp_init_set_int.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_mp_init_set_int.c
+
+bn_mp_init_size.o:$(TOMMATH_DIR)/bn_mp_init_size.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_mp_init_size.c
+
+bn_mp_karatsuba_mul.o: $(TOMMATH_DIR)/bn_mp_karatsuba_mul.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_mp_karatsuba_mul.c
+
+bn_mp_karatsuba_sqr.o: $(TOMMATH_DIR)/bn_mp_karatsuba_sqr.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_mp_karatsuba_sqr.c
+
+bn_mp_lshd.o: $(TOMMATH_DIR)/bn_mp_lshd.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_mp_lshd.c
+
+bn_mp_mod.o: $(TOMMATH_DIR)/bn_mp_mod.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_mp_mod.c
+
+bn_mp_mod_2d.o: $(TOMMATH_DIR)/bn_mp_mod_2d.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_mp_mod_2d.c
+
+bn_mp_mul.o: $(TOMMATH_DIR)/bn_mp_mul.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_mp_mul.c
+
+bn_mp_mul_2.o: $(TOMMATH_DIR)/bn_mp_mul_2.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_mp_mul_2.c
+
+bn_mp_mul_2d.o: $(TOMMATH_DIR)/bn_mp_mul_2d.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_mp_mul_2d.c
+
+bn_mp_mul_d.o: $(TOMMATH_DIR)/bn_mp_mul_d.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_mp_mul_d.c
+
+bn_mp_neg.o: $(TOMMATH_DIR)/bn_mp_neg.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_mp_neg.c
+
+bn_mp_or.o: $(TOMMATH_DIR)/bn_mp_or.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_mp_or.c
+
+bn_mp_radix_size.o: $(TOMMATH_DIR)/bn_mp_radix_size.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_mp_radix_size.c
+
+bn_mp_radix_smap.o: $(TOMMATH_DIR)/bn_mp_radix_smap.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_mp_radix_smap.c
+
+bn_mp_read_radix.o: $(TOMMATH_DIR)/bn_mp_read_radix.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_mp_read_radix.c
+
+bn_mp_rshd.o: $(TOMMATH_DIR)/bn_mp_rshd.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_mp_rshd.c
+
+bn_mp_set.o: $(TOMMATH_DIR)/bn_mp_set.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_mp_set.c
+
+bn_mp_set_int.o: $(TOMMATH_DIR)/bn_mp_set_int.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_mp_set_int.c
+
+bn_mp_shrink.o: $(TOMMATH_DIR)/bn_mp_shrink.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_mp_shrink.c
+
+bn_mp_sqr.o: $(TOMMATH_DIR)/bn_mp_sqr.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_mp_sqr.c
+
+bn_mp_sqrt.o: $(TOMMATH_DIR)/bn_mp_sqrt.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_mp_sqrt.c
+
+bn_mp_sub.o: $(TOMMATH_DIR)/bn_mp_sub.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_mp_sub.c
+
+bn_mp_sub_d.o: $(TOMMATH_DIR)/bn_mp_sub_d.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_mp_sub_d.c
+
+bn_mp_to_unsigned_bin.o: $(TOMMATH_DIR)/bn_mp_to_unsigned_bin.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_mp_to_unsigned_bin.c
+
+bn_mp_to_unsigned_bin_n.o: $(TOMMATH_DIR)/bn_mp_to_unsigned_bin_n.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_mp_to_unsigned_bin_n.c
+
+bn_mp_toom_mul.o: $(TOMMATH_DIR)/bn_mp_toom_mul.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_mp_toom_mul.c
+
+bn_mp_toom_sqr.o: $(TOMMATH_DIR)/bn_mp_toom_sqr.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_mp_toom_sqr.c
+
+bn_mp_toradix_n.o: $(TOMMATH_DIR)/bn_mp_toradix_n.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_mp_toradix_n.c
+
+bn_mp_unsigned_bin_size.o: $(TOMMATH_DIR)/bn_mp_unsigned_bin_size.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_mp_unsigned_bin_size.c
+
+bn_mp_xor.o: $(TOMMATH_DIR)/bn_mp_xor.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_mp_xor.c
+
+bn_mp_zero.o: $(TOMMATH_DIR)/bn_mp_zero.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_mp_zero.c
+
+bn_s_mp_add.o: $(TOMMATH_DIR)/bn_s_mp_add.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_s_mp_add.c
+
+bn_s_mp_mul_digs.o: $(TOMMATH_DIR)/bn_s_mp_mul_digs.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_s_mp_mul_digs.c
+
+bn_s_mp_sqr.o: $(TOMMATH_DIR)/bn_s_mp_sqr.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_s_mp_sqr.c
+
+bn_s_mp_sub.o: $(TOMMATH_DIR)/bn_s_mp_sub.c $(MATHHDRS)
+	$(CC) -c $(CC_SWITCHES) $(TOMMATH_DIR)/bn_s_mp_sub.c
+
+tclUnixChan.o: $(UNIX_DIR)/tclUnixChan.c $(IOHDR)
+	$(CC) -c $(CC_SWITCHES) $(UNIX_DIR)/tclUnixChan.c
+
+tclUnixEvent.o: $(UNIX_DIR)/tclUnixEvent.c
+	$(CC) -c $(CC_SWITCHES) $(UNIX_DIR)/tclUnixEvent.c
+
+tclUnixFCmd.o: $(UNIX_DIR)/tclUnixFCmd.c
+	$(CC) -c $(CC_SWITCHES) $(UNIX_DIR)/tclUnixFCmd.c
+
+tclUnixFile.o: $(UNIX_DIR)/tclUnixFile.c $(FSHDR)
+	$(CC) -c $(CC_SWITCHES) $(UNIX_DIR)/tclUnixFile.c
+
+tclUnixNotfy.o: $(UNIX_DIR)/tclUnixNotfy.c
+	$(CC) -c $(CC_SWITCHES) $(UNIX_DIR)/tclUnixNotfy.c
+
+tclUnixPipe.o: $(UNIX_DIR)/tclUnixPipe.c
+	$(CC) -c $(CC_SWITCHES) $(UNIX_DIR)/tclUnixPipe.c
+
+tclUnixSock.o: $(UNIX_DIR)/tclUnixSock.c
+	$(CC) -c $(CC_SWITCHES) $(UNIX_DIR)/tclUnixSock.c
+
+tclUnixTest.o: $(UNIX_DIR)/tclUnixTest.c
+	$(CC) -c $(APP_CC_SWITCHES) $(UNIX_DIR)/tclUnixTest.c
+
+tclUnixThrd.o: $(UNIX_DIR)/tclUnixThrd.c
+	$(CC) -c $(CC_SWITCHES) $(UNIX_DIR)/tclUnixThrd.c
+
+tclUnixTime.o: $(UNIX_DIR)/tclUnixTime.c
+	$(CC) -c $(CC_SWITCHES) $(UNIX_DIR)/tclUnixTime.c
+
+TCL_LOCATIONS=-DTCL_LIBRARY="\"${TCL_LIBRARY}\"" -DTCL_PACKAGE_PATH="\"${TCL_PACKAGE_PATH}\""
+tclUnixInit.o: $(UNIX_DIR)/tclUnixInit.c tclConfig.sh
+	$(CC) -c $(CC_SWITCHES) $(TCL_LOCATIONS) $(UNIX_DIR)/tclUnixInit.c
+
+tclUnixCompat.o: $(UNIX_DIR)/tclUnixCompat.c
+	$(CC) -c $(CC_SWITCHES) $(UNIX_DIR)/tclUnixCompat.c
+
+# The following are Mac OS X only sources:
+tclMacOSXBundle.o: $(MAC_OSX_DIR)/tclMacOSXBundle.c
+	$(CC) -c $(CC_SWITCHES) $(MAC_OSX_DIR)/tclMacOSXBundle.c
+
+tclMacOSXFCmd.o: $(MAC_OSX_DIR)/tclMacOSXFCmd.c
+	$(CC) -c $(CC_SWITCHES) $(MAC_OSX_DIR)/tclMacOSXFCmd.c
+
+tclMacOSXNotify.o: $(MAC_OSX_DIR)/tclMacOSXNotify.c
+	$(CC) -c $(CC_SWITCHES) $(MAC_OSX_DIR)/tclMacOSXNotify.c
+
+# The following is a CYGWIN only source:
+tclWinError.o: $(TOP_DIR)/win/tclWinError.c
+	$(CC) -c $(CC_SWITCHES) $(TOP_DIR)/win/tclWinError.c
+
+# DTrace support
+
+$(TCL_OBJS) $(STUB_LIB_OBJS) $(TCLSH_OBJS) $(TCLTEST_OBJS) $(XTTEST_OBJS) $(TOMMATH_OBJS): @DTRACE_HDR@
+
+$(DTRACE_HDR): $(DTRACE_SRC)
+	$(DTRACE) -h $(DTRACE_SWITCHES) -o $@ -s $(DTRACE_SRC)
+
+$(DTRACE_OBJ): $(DTRACE_SRC) $(TCL_OBJS)
+	$(DTRACE) -G $(DTRACE_SWITCHES) -o $@ -s $(DTRACE_SRC) $(TCL_OBJS)
+
+#--------------------------------------------------------------------------
+# The following targets are not completely general. They are provide purely
+# for documentation purposes so people who are interested in the Xt based
+# notifier can modify them to suit their own installation.
+#--------------------------------------------------------------------------
+
+xttest:	${XTTEST_OBJS} ${TCL_LIB_FILE} ${TCL_STUB_LIB_FILE} ${BUILD_DLTEST}
+	${CC} ${CFLAGS} ${LDFLAGS} ${XTTEST_OBJS} \
+		@TCL_BUILD_LIB_SPEC@ ${TCL_STUB_LIB_FILE} ${LIBS} @EXTRA_TCLSH_LIBS@ \
+		${CC_SEARCH_FLAGS} -L/usr/openwin/lib -lXt -o xttest
+
+tclXtNotify.o: $(UNIX_DIR)/tclXtNotify.c
+	$(CC) -c $(APP_CC_SWITCHES) -I/usr/openwin/include \
+		$(UNIX_DIR)/tclXtNotify.c
+
+tclXtTest.o: $(UNIX_DIR)/tclXtTest.c
+	$(CC) -c $(APP_CC_SWITCHES) -I/usr/openwin/include \
+		$(UNIX_DIR)/tclXtTest.c
+
+#--------------------------------------------------------------------------
+# Compat binaries, these must be compiled for use in a shared library even
+# though they may be placed in a static executable or library. Since they are
+# included in both the tcl library and the stub library, they need to be
+# relocatable.
+#--------------------------------------------------------------------------
+
+opendir.o: $(COMPAT_DIR)/opendir.c
+	$(CC) -c $(STUB_CC_SWITCHES) $(COMPAT_DIR)/opendir.c
+
+mkstemp.o: $(COMPAT_DIR)/mkstemp.c
+	$(CC) -c $(STUB_CC_SWITCHES) $(COMPAT_DIR)/mkstemp.c
+
+memcmp.o: $(COMPAT_DIR)/memcmp.c
+	$(CC) -c $(STUB_CC_SWITCHES) $(COMPAT_DIR)/memcmp.c
+
+strncasecmp.o: $(COMPAT_DIR)/strncasecmp.c
+	$(CC) -c $(STUB_CC_SWITCHES) $(COMPAT_DIR)/strncasecmp.c
+
+strstr.o: $(COMPAT_DIR)/strstr.c
+	$(CC) -c $(STUB_CC_SWITCHES) $(COMPAT_DIR)/strstr.c
+
+strtol.o: $(COMPAT_DIR)/strtol.c
+	$(CC) -c $(STUB_CC_SWITCHES) $(COMPAT_DIR)/strtol.c
+
+strtoul.o: $(COMPAT_DIR)/strtoul.c
+	$(CC) -c $(STUB_CC_SWITCHES) $(COMPAT_DIR)/strtoul.c
+
+waitpid.o: $(COMPAT_DIR)/waitpid.c
+	$(CC) -c $(STUB_CC_SWITCHES) $(COMPAT_DIR)/waitpid.c
+
+fake-rfc2553.o: $(COMPAT_DIR)/fake-rfc2553.c
+	$(CC) -c $(STUB_CC_SWITCHES) $(COMPAT_DIR)/fake-rfc2553.c
+
+# For building zlib, only used in some build configurations
+Zadler32.o: $(ZLIB_DIR)/adler32.c
+	$(CC) -c -o $@ $(CC_SWITCHES) -I$(ZLIB_DIR) $(ZLIB_DIR)/adler32.c
+Zcompress.o: $(ZLIB_DIR)/compress.c
+	$(CC) -c -o $@ $(CC_SWITCHES) -I$(ZLIB_DIR) $(ZLIB_DIR)/compress.c
+Zcrc32.o:    $(ZLIB_DIR)/crc32.c
+	$(CC) -c -o $@ $(CC_SWITCHES) -I$(ZLIB_DIR) $(ZLIB_DIR)/crc32.c
+Zdeflate.o:  $(ZLIB_DIR)/deflate.c
+	$(CC) -c -o $@ $(CC_SWITCHES) -I$(ZLIB_DIR) $(ZLIB_DIR)/deflate.c
+Zinfback.o:  $(ZLIB_DIR)/infback.c
+	$(CC) -c -o $@ $(CC_SWITCHES) -I$(ZLIB_DIR) $(ZLIB_DIR)/infback.c
+Zinffast.o:  $(ZLIB_DIR)/inffast.c
+	$(CC) -c -o $@ $(CC_SWITCHES) -I$(ZLIB_DIR) $(ZLIB_DIR)/inffast.c
+Zinflate.o:  $(ZLIB_DIR)/inflate.c
+	$(CC) -c -o $@ $(CC_SWITCHES) -I$(ZLIB_DIR) $(ZLIB_DIR)/inflate.c
+Zinftrees.o: $(ZLIB_DIR)/inftrees.c
+	$(CC) -c -o $@ $(CC_SWITCHES) -I$(ZLIB_DIR) $(ZLIB_DIR)/inftrees.c
+Ztrees.o:    $(ZLIB_DIR)/trees.c
+	$(CC) -c -o $@ $(CC_SWITCHES) -I$(ZLIB_DIR) $(ZLIB_DIR)/trees.c
+Zuncompr.o:  $(ZLIB_DIR)/uncompr.c
+	$(CC) -c -o $@ $(CC_SWITCHES) -I$(ZLIB_DIR) $(ZLIB_DIR)/uncompr.c
+Zzutil.o:    $(ZLIB_DIR)/zutil.c
+	$(CC) -c -o $@ $(CC_SWITCHES) -I$(ZLIB_DIR) $(ZLIB_DIR)/zutil.c
+
+#--------------------------------------------------------------------------
+# Stub library binaries, these must be compiled for use in a shared library
+# even though they will be placed in a static archive
+#--------------------------------------------------------------------------
+
+tclStubLib.o: $(GENERIC_DIR)/tclStubLib.c
+	$(CC) -c $(STUB_CC_SWITCHES) -DSTATIC_BUILD $(GENERIC_DIR)/tclStubLib.c
+
+tclTomMathStubLib.o: $(GENERIC_DIR)/tclTomMathStubLib.c
+	$(CC) -c $(STUB_CC_SWITCHES) $(GENERIC_DIR)/tclTomMathStubLib.c
+
+tclOOStubLib.o: $(GENERIC_DIR)/tclOOStubLib.c
+	$(CC) -c $(STUB_CC_SWITCHES) $(GENERIC_DIR)/tclOOStubLib.c
+
+.c.o:
+	$(CC) -c $(CC_SWITCHES) $<
+
+#--------------------------------------------------------------------------
+# Bundled Package targets
+#--------------------------------------------------------------------------
+
+# Propagate configure args like --enable-64bit to package configure
+PKG_CFG_ARGS		= @PKG_CFG_ARGS@
+# If PKG_DIR is changed to a different relative depth to the build dir, need
+# to adapt the ../.. relative paths below and at the top of configure.in (we
+# cannot use absolute paths due to issues in nested configure when path to
+# build dir contains spaces).
+PKG_DIR			= ./pkgs
+
+configure-packages:
+	@for i in $(PKGS_DIR)/*; do \
+	  if [ -d $$i ]; then \
+	    if [ -x $$i/configure ]; then \
+	      pkg=`basename $$i`; \
+	      echo "Configuring package '$$pkg'"; \
+	      mkdir -p $(PKG_DIR)/$$pkg; \
+	      if [ ! -f $(PKG_DIR)/$$pkg/Makefile ]; then \
+		( cd $(PKG_DIR)/$$pkg; \
+		  $$i/configure --with-tcl=../.. \
+		      --with-tclinclude=$(GENERIC_DIR) \
+		      $(PKG_CFG_ARGS) --libdir=$(PACKAGE_DIR) \
+		      --enable-shared --enable-threads; ) || exit $$?; \
+	      fi; \
+	    fi; \
+	  fi; \
+	done
+
+packages: configure-packages ${STUB_LIB_FILE}
+	@for i in $(PKGS_DIR)/*; do \
+	  if [ -d $$i ]; then \
+	    pkg=`basename $$i`; \
+	    if [ -f $(PKG_DIR)/$$pkg/Makefile ]; then \
+	      echo "Building package '$$pkg'"; \
+	      ( cd $(PKG_DIR)/$$pkg; $(MAKE); ) || exit $$?; \
+	    fi; \
+	  fi; \
+	done
+
+install-packages: packages
+	@for i in $(PKGS_DIR)/*; do \
+	  if [ -d $$i ]; then \
+	    pkg=`basename $$i`; \
+	    if [ -f $(PKG_DIR)/$$pkg/Makefile ]; then \
+	      echo "Installing package '$$pkg'"; \
+	      ( cd $(PKG_DIR)/$$pkg; $(MAKE) install \
+		  "DESTDIR=$(INSTALL_ROOT)"; ) || exit $$?; \
+	    fi; \
+	  fi; \
+	done
+
+test-packages: ${TCLTEST_EXE} packages
+	@for i in $(PKGS_DIR)/*; do \
+	  if [ -d $$i ]; then \
+	    pkg=`basename $$i`; \
+	    if [ -f $(PKG_DIR)/$$pkg/Makefile ]; then \
+	      echo "Testing package '$$pkg'"; \
+	      ( cd $(PKG_DIR)/$$pkg; $(MAKE) \
+		  "@LD_LIBRARY_PATH_VAR@=../..:$${@LD_LIBRARY_PATH_VAR@}" \
+		  "TCL_LIBRARY=${TCL_BUILDTIME_LIBRARY}" \
+		  "TCLLIBPATH=../../pkgs" test \
+		  "TCLSH_PROG=../../${TCLTEST_EXE}"; ) \
+	    fi; \
+	  fi; \
+	done
+
+clean-packages:
+	@for i in $(PKGS_DIR)/*; do \
+	  if [ -d $$i ]; then \
+	    pkg=`basename $$i`; \
+	    if [ -f $(PKG_DIR)/$$pkg/Makefile ]; then \
+	      ( cd $(PKG_DIR)/$$pkg; $(MAKE) clean; ) \
+	    fi; \
+	  fi; \
+	done
+
+distclean-packages:
+	@for i in $(PKGS_DIR)/*; do \
+	  if [ -d $$i ]; then \
+	    pkg=`basename $$i`; \
+	    if [ -f $(PKG_DIR)/$$pkg/Makefile ]; then \
+	      ( cd $(PKG_DIR)/$$pkg; $(MAKE) distclean; ) \
+	    fi; \
+	    rm -rf $(PKG_DIR)/$$pkg; \
+	  fi; \
+	done; \
+	rm -rf $(PKG_DIR)
+
+dist-packages: configure-packages
+	@rm -rf $(DISTROOT)/pkgs; \
+	mkdir -p $(DISTROOT)/pkgs; \
+	for i in $(PKGS_DIR)/*; do \
+	  if [ -d $$i ]; then \
+	    pkg=`basename $$i`; \
+	    if [ -f $(PKG_DIR)/$$pkg/Makefile ]; then \
+	      ( cd $(PKG_DIR)/$$pkg; $(MAKE) dist \
+		  "DIST_ROOT=$(DISTROOT)/pkgs"; ) || exit $$?; \
+	    fi; \
+	  fi; \
+	done
+
+#--------------------------------------------------------------------------
+# Maintainer-only targets
+#--------------------------------------------------------------------------
+
+# The following target generates the file generic/tclDate.c from the yacc
+# grammar found in generic/tclGetDate.y. This is only run by hand as yacc is
+# not available in all environments. The name of the .c file is different than
+# the name of the .y file so that make doesn't try to automatically regenerate
+# the .c file.
+
+gendate:
+	bison --output-file=$(GENERIC_DIR)/tclDate.c \
+	--no-lines \
+	--name-prefix=TclDate \
+	$(GENERIC_DIR)/tclGetDate.y
+
+#	yacc -l $(GENERIC_DIR)/tclGetDate.y
+#	sed -e 's/yy/TclDate/g' -e '/^#include <values.h>/d' \
+#	    -e 's?SCCSID?RCS: @(#) ?' \
+#	    -e '/#ifdef __STDC__/,/#endif/d' -e '/TclDateerrlab:/d' \
+#	    -e '/TclDatenewstate:/d' -e '/#pragma/d' \
+#	    -e '/#include <inttypes.h>/d' \
+#           -e '/#define YYNEW/s/malloc/TclDateAlloc/g' \
+#	    -e '/#define YYENLARGE/,/realloc/s/realloc/TclDateRealloc/g' \
+#	    <y.tab.c >$(GENERIC_DIR)/tclDate.c
+#	rm y.tab.c
+
+# The following target generates the file generic/tclTomMath.h. It needs to be
+# run (and the results checked) after updating to a new release of libtommath.
+
+gentommath_h:
+	$(NATIVE_TCLSH) "$(TOOL_DIR)/fix_tommath_h.tcl" \
+		"$(TOMMATH_DIR)/tommath.h" \
+		> "$(GENERIC_DIR)/tclTomMath.h"
+
+#
+# Target to regenerate header files and stub files from the *.decls tables.
+#
+
+$(GENERIC_DIR)/tclStubInit.c: $(GENERIC_DIR)/tcl.decls \
+		$(GENERIC_DIR)/tclInt.decls $(GENERIC_DIR)/tclTomMath.decls
+	@echo "Warning: tclStubInit.c may be out of date."
+	@echo "Developers may want to run \"make genstubs\" to regenerate."
+	@echo "This warning can be safely ignored, do not report as a bug!"
+
+$(GENERIC_DIR)/tclOOStubInit.c: $(GENERIC_DIR)/tclOO.decls
+	@echo "Warning: tclOOStubInit.c may be out of date."
+	@echo "Developers may want to run \"make genstubs\" to regenerate."
+	@echo "This warning can be safely ignored, do not report as a bug!"
+
+genstubs:
+	$(NATIVE_TCLSH) $(TOOL_DIR)/genStubs.tcl $(GENERIC_DIR) \
+		$(GENERIC_DIR)/tcl.decls $(GENERIC_DIR)/tclInt.decls \
+		$(GENERIC_DIR)/tclTomMath.decls
+	$(NATIVE_TCLSH) $(TOOL_DIR)/genStubs.tcl $(GENERIC_DIR) \
+		$(GENERIC_DIR)/tclOO.decls
+
+#
+# Target to check that all exported functions have an entry in the stubs
+# tables.
+#
+
+checkstubs: $(TCL_LIB_FILE)
+	-@for i in `nm -p $(TCL_LIB_FILE) \
+		| awk '$$2 ~ /^[TDBCS]$$/ { sub("^_", "", $$3); print $$3 }' \
+		| sort -n`; do \
+		match=0; \
+		for j in $(TCL_DECLS); do \
+		    if [ `grep -c "$$i *(" $$j` -gt 0 ]; then \
+			match=1; \
+		    fi; \
+		done; \
+		if [ $$match -eq 0 ]; then echo $$i; fi \
+	done
+
+#
+# Target to check that all public APIs which are not command implementations
+# have an entry in section three of the distributed manpages.
+#
+
+checkdoc: $(TCL_LIB_FILE)
+	-@for i in `nm -p $(TCL_LIB_FILE) | awk '$$3 ~ /Tcl_/ { print $$3 }' \
+		| grep -v 'Cmd$$' | sort -n`; do \
+		match=0; \
+		for j in $(TOP_DIR)/doc/*.3; do \
+		    if [ `grep '\-' $$j | grep -c $$i` -gt 0 ]; then \
+			match=1; \
+		    fi; \
+		done; \
+		if [ $$match -eq 0 ]; then echo $$i; fi \
+	done
+
+#
+# Target to check for proper usage of UCHAR macro.
+#
+
+checkuchar:
+	-egrep isalnum\|isalpha\|iscntrl\|isdigit\|islower\|isprint\|ispunct\|isspace\|isupper\|isxdigit\|toupper\|tolower $(SRCS) | grep -v UCHAR
+
+#
+# Target to make sure that only symbols with "Tcl" prefixes are exported.
+#
+
+checkexports: $(TCL_LIB_FILE)
+	-@nm -p $(TCL_LIB_FILE) \
+	| awk '$$2 ~ /^[TDBCS]$$/ { sub("^_", "", $$3); print $$3 }' \
+	| sort -n | grep -E -v '^[Tt]cl' || true
+
+#--------------------------------------------------------------------------
+# Distribution building rules
+#--------------------------------------------------------------------------
+
+#
+# Target to create a Tcl RPM for Linux. Requires that you be on a Linux
+# system.
+#
+
+rpm: all
+	rm -f THIS.TCL.SPEC
+	echo "%define _builddir `pwd`" > THIS.TCL.SPEC
+	echo "%define _rpmdir `pwd`/RPMS" >> THIS.TCL.SPEC
+	cat tcl.spec >> THIS.TCL.SPEC
+	mkdir -p RPMS/i386
+	rpmbuild -bb THIS.TCL.SPEC
+	mv RPMS/i386/*.rpm .
+	rm -rf RPMS THIS.TCL.SPEC
+
+#
+# Target to create a proper Tcl distribution from information in the master
+# source directory. DISTDIR must be defined to indicate where to put the
+# distribution. DISTDIR must be an absolute path name.
+#
+
+DISTROOT = /tmp/dist
+DISTNAME = tcl${VERSION}${PATCH_LEVEL}
+ZIPNAME	 = tcl${MAJOR_VERSION}${MINOR_VERSION}${PATCH_LEVEL}-src.zip
+DISTDIR	 = $(DISTROOT)/$(DISTNAME)
+$(UNIX_DIR)/configure: $(UNIX_DIR)/configure.in $(UNIX_DIR)/tcl.m4 \
+		$(UNIX_DIR)/aclocal.m4
+	cd $(UNIX_DIR); autoconf
+$(MAC_OSX_DIR)/configure: $(MAC_OSX_DIR)/configure.ac $(UNIX_DIR)/configure
+	cd $(MAC_OSX_DIR); autoconf
+$(UNIX_DIR)/tclConfig.h.in: $(MAC_OSX_DIR)/configure
+	cd $(MAC_OSX_DIR); autoheader; touch $@
+
+dist: $(UNIX_DIR)/configure $(UNIX_DIR)/tclConfig.h.in $(UNIX_DIR)/tcl.pc.in $(MAC_OSX_DIR)/configure genstubs dist-packages ${NATIVE_TCLSH}
+	rm -rf $(DISTDIR)
+	mkdir -p $(DISTDIR)/unix
+	cp -p $(UNIX_DIR)/*.[ch] $(DISTDIR)/unix
+	cp $(UNIX_DIR)/Makefile.in $(DISTDIR)/unix
+	chmod 664 $(DISTDIR)/unix/Makefile.in
+	cp $(UNIX_DIR)/configure $(UNIX_DIR)/configure.in \
+		$(UNIX_DIR)/tcl.m4 $(UNIX_DIR)/aclocal.m4 \
+		$(UNIX_DIR)/tclConfig.sh.in $(UNIX_DIR)/tclooConfig.sh \
+		$(UNIX_DIR)/install-sh \
+		$(UNIX_DIR)/README $(UNIX_DIR)/ldAix $(UNIX_DIR)/tcl.spec \
+		$(UNIX_DIR)/installManPage $(UNIX_DIR)/tclConfig.h.in \
+		$(UNIX_DIR)/tcl.pc.in $(DISTDIR)/unix
+	chmod 775 $(DISTDIR)/unix/configure $(DISTDIR)/unix/configure.in
+	chmod 775 $(DISTDIR)/unix/ldAix
+	@mkdir $(DISTDIR)/generic
+	cp -p $(GENERIC_DIR)/*.[cdh] $(DISTDIR)/generic
+	cp -p $(GENERIC_DIR)/*.decls $(DISTDIR)/generic
+	cp -p $(GENERIC_DIR)/README $(DISTDIR)/generic
+	cp -p $(GENERIC_DIR)/tclGetDate.y $(DISTDIR)/generic
+	cp -p $(TOP_DIR)/changes $(TOP_DIR)/ChangeLog $(TOP_DIR)/README \
+		$(TOP_DIR)/ChangeLog.[12]??? $(TOP_DIR)/license.terms \
+		$(DISTDIR)
+	@mkdir $(DISTDIR)/library
+	cp -p $(TOP_DIR)/license.terms $(TOP_DIR)/library/*.tcl \
+		$(TOP_DIR)/library/tclIndex $(DISTDIR)/library
+	for i in http1.0 http opt msgcat reg dde tcltest platform; \
+	    do \
+		mkdir $(DISTDIR)/library/$$i ;\
+		cp -p $(TOP_DIR)/library/$$i/*.tcl $(DISTDIR)/library/$$i; \
+	    done;
+	@mkdir $(DISTDIR)/library/encoding
+	cp -p $(TOP_DIR)/library/encoding/*.enc $(DISTDIR)/library/encoding
+	@mkdir $(DISTDIR)/library/msgs
+	cp -p $(TOP_DIR)/library/msgs/*.msg $(DISTDIR)/library/msgs
+	@echo cp -r $(TOP_DIR)/library/tzdata $(DISTDIR)/library/tzdata
+	@( cd $(TOP_DIR); \
+	  find library/tzdata -name CVS -prune -o -type f -print ) \
+	    | ( cd $(TOP_DIR) ; xargs tar cf - ) \
+	    | ( cd $(DISTDIR) ; tar xfp - )
+	@mkdir $(DISTDIR)/doc
+	cp -p $(TOP_DIR)/license.terms $(TOP_DIR)/doc/*.[13n] \
+		$(TOP_DIR)/doc/man.macros $(DISTDIR)/doc
+	@mkdir $(DISTDIR)/compat
+	cp -p $(TOP_DIR)/license.terms $(COMPAT_DIR)/*.[ch] \
+		$(COMPAT_DIR)/README $(DISTDIR)/compat
+	@mkdir $(DISTDIR)/compat/zlib
+	( cd $(COMPAT_DIR)/zlib; \
+	  find . -name CVS -prune -o -type f -print ) \
+	    | ( cd $(COMPAT_DIR)/zlib ; xargs tar cf - ) \
+	    | ( cd $(DISTDIR)/compat/zlib ; tar xfp - )
+	@mkdir $(DISTDIR)/tests
+	cp -p $(TOP_DIR)/license.terms $(DISTDIR)/tests
+	cp -p $(TOP_DIR)/tests/*.test $(TOP_DIR)/tests/README \
+		$(TOP_DIR)/tests/httpd $(TOP_DIR)/tests/*.tcl \
+		$(DISTDIR)/tests
+	@mkdir $(DISTDIR)/win
+	cp $(TOP_DIR)/win/Makefile.in $(DISTDIR)/win
+	cp $(TOP_DIR)/win/configure.in $(TOP_DIR)/win/configure \
+		$(TOP_DIR)/win/tclConfig.sh.in $(TOP_DIR)/win/tclooConfig.sh \
+		$(TOP_DIR)/win/tcl.m4 $(TOP_DIR)/win/aclocal.m4 \
+		$(TOP_DIR)/win/tclsh.exe.manifest.in \
+		$(DISTDIR)/win
+	cp -p $(TOP_DIR)/win/*.[ch] $(TOP_DIR)/win/*.ico $(TOP_DIR)/win/*.rc \
+		$(DISTDIR)/win
+	cp -p $(TOP_DIR)/win/*.bat $(DISTDIR)/win
+	cp -p $(TOP_DIR)/win/*.vc $(DISTDIR)/win
+	cp -p $(TOP_DIR)/win/coffbase.txt $(DISTDIR)/win
+	cp -p $(TOP_DIR)/win/tcl.hpj.in $(DISTDIR)/win
+	cp -p $(TOP_DIR)/win/tcl.ds* $(DISTDIR)/win
+	cp -p $(TOP_DIR)/win/README $(DISTDIR)/win
+	cp -p $(TOP_DIR)/license.terms $(DISTDIR)/win
+	@mkdir $(DISTDIR)/macosx
+	cp -p $(MAC_OSX_DIR)/GNUmakefile $(MAC_OSX_DIR)/README \
+		$(MAC_OSX_DIR)/*.c $(MAC_OSX_DIR)/*.in \
+		$(MAC_OSX_DIR)/*.ac $(MAC_OSX_DIR)/*.xcconfig \
+		$(MAC_OSX_DIR)/configure $(DISTDIR)/macosx
+	cp -p $(TOP_DIR)/license.terms $(DISTDIR)/macosx
+	@mkdir $(DISTDIR)/macosx/Tcl.xcode
+	cp -p $(MAC_OSX_DIR)/Tcl.xcode/project.pbxproj \
+		$(MAC_OSX_DIR)/Tcl.xcode/default.pbxuser \
+		$(DISTDIR)/macosx/Tcl.xcode
+	@mkdir $(DISTDIR)/macosx/Tcl.xcodeproj
+	cp -p $(MAC_OSX_DIR)/Tcl.xcodeproj/project.pbxproj \
+		$(MAC_OSX_DIR)/Tcl.xcodeproj/default.pbxuser \
+		$(DISTDIR)/macosx/Tcl.xcodeproj
+	@mkdir $(DISTDIR)/unix/dltest
+	cp -p $(UNIX_DIR)/dltest/*.c $(UNIX_DIR)/dltest/Makefile.in \
+		$(UNIX_DIR)/dltest/README $(DISTDIR)/unix/dltest
+	@mkdir $(DISTDIR)/tools
+	cp -p $(TOOL_DIR)/Makefile.in $(TOOL_DIR)/README \
+		$(TOOL_DIR)/configure $(TOOL_DIR)/configure.in \
+		$(TOOL_DIR)/*.tcl $(TOOL_DIR)/man2tcl.c \
+		$(TOOL_DIR)/*.bmp $(TOOL_DIR)/tcl.hpj.in \
+		$(DISTDIR)/tools
+	@mkdir $(DISTDIR)/libtommath
+	cp -p $(TOMMATH_SRCS) $(TOMMATH_DIR)/*.h $(DISTDIR)/libtommath
+	@mkdir $(DISTDIR)/pkgs
+	cp $(TOP_DIR)/pkgs/README $(DISTDIR)/pkgs
+	cp $(TOP_DIR)/pkgs/package.list.txt $(DISTDIR)/pkgs
+	for i in `ls $(DISTROOT)/pkgs/*.tar.gz 2> /dev/null`; do \
+	    tar -C $(DISTDIR)/pkgs -xzf "$$i"; \
+	done
+
+alldist: dist
+	rm -f $(DISTROOT)/$(DISTNAME)-src.tar.gz $(DISTROOT)/$(ZIPNAME)
+	cd $(DISTROOT); tar cf $(DISTNAME)-src.tar $(DISTNAME); \
+		gzip -9 $(DISTNAME)-src.tar; zip -qr8 $(ZIPNAME) $(DISTNAME)
+
+#--------------------------------------------------------------------------
+# This target creates the HTML folder for Tcl & Tk and places it in
+# DISTDIR/html. It uses the tcltk-man2html.tcl tool from the Tcl group's tool
+# workspace. It depends on the Tcl & Tk being in directories called tcl8.* &
+# tk8.* up two directories from the TOOL_DIR.
+#
+# Note that for platforms where this is important, it is more common to use a
+# build of this HTML documentation that has already been placed online. As
+# such, this rule is not guaranteed to work well on all systems; it only needs
+# to function on those of the Tcl/Tk maintainers.
+#
+# Also note that the 8.6 tool build requires an installed 8.6 native Tcl
+# interpreter in order to be able to run.
+#--------------------------------------------------------------------------
+
+html: ${NATIVE_TCLSH}
+	$(BUILD_HTML)
+	@EXTRA_BUILD_HTML@
+
+html-tcl: ${NATIVE_TCLSH}
+	$(BUILD_HTML) --tcl
+	@EXTRA_BUILD_HTML@
+
+html-tk: ${NATIVE_TCLSH}
+	$(BUILD_HTML) --tk
+	@EXTRA_BUILD_HTML@
+
+# You'd better have these programs or you will have problems creating Makefile
+# from Makefile.in in the first place...
+HTML_VERSION = `basename $(TOP_DIR) | sed s/tcl//`
+BUILD_HTML = \
+	@${NATIVE_TCLSH} $(TOOL_DIR)/tcltk-man2html.tcl \
+		--useversion=$(HTML_VERSION) --htmldir="$(HTML_INSTALL_DIR)" \
+		--srcdir=$(TOP_DIR)/.. $(BUILD_HTML_FLAGS)
+
+#--------------------------------------------------------------------------
+# The list of all the targets that do not correspond to real files. This stops
+# 'make' from getting confused when someone makes an error in a rule.
+#--------------------------------------------------------------------------
+
+.PHONY: all binaries libraries objs doc html html-tcl html-tk test runtest
+.PHONY: install install-strip install-binaries install-libraries
+.PHONY: install-headers install-private-headers install-doc
+.PHONY: clean distclean depend genstubs checkstubs checkexports checkuchar
+.PHONY: shell gdb valgrind valgrindshell dist alldist rpm
+.PHONY: tclLibObjs tcltest-real test-tcl gdb-test ro-test trace-test xttest
+.PHONY: topDirName gendate gentommath_h trace-shell checkdoc
+.PHONY: install-tzdata install-msgs
+.PHONY: packages configure-packages test-packages clean-packages
+.PHONY: dist-packages distclean-packages install-packages
+
+#--------------------------------------------------------------------------
+# DO NOT DELETE THIS LINE -- make depend depends on it.
diff --git a/tcl8.6/unix/README b/tcl8.6/unix/README
new file mode 100644
index 0000000..d8f1090
--- /dev/null
+++ b/tcl8.6/unix/README
@@ -0,0 +1,169 @@
+Tcl UNIX README
+---------------
+
+This is the directory where you configure, compile, test, and install UNIX
+versions of Tcl. This directory also contains source files for Tcl that are
+specific to UNIX. Some of the files in this directory are used on the PC or
+MacOSX platform too, but they all depend on UNIX (POSIX/ANSI C) interfaces and
+some of them only make sense under UNIX.
+
+Updated forms of the information found in this file is available at:
+	http://www.tcl.tk/doc/howto/compile.html#unix
+
+For information on platforms where Tcl is known to compile, along with any
+porting notes for getting it to work on those platforms, see:
+	http://www.tcl.tk/software/tcltk/platforms.html
+
+The rest of this file contains instructions on how to do this. The release
+should compile and run either "out of the box" or with trivial changes on any
+UNIX-like system that approximates POSIX, BSD, or System V. We know that it
+runs on workstations from Sun, H-P, DEC, IBM, and SGI, as well as PCs running
+Linux, BSDI, and SCO UNIX. To compile for a PC running Windows, see the README
+file in the directory ../win. To compile for MacOSX, see the README file in
+the directory ../macosx.
+
+How To Compile And Install Tcl:
+-------------------------------
+
+(a) If you have already compiled Tcl once in this directory and are now
+    preparing to compile again in the same directory but for a different
+    platform, or if you have applied patches, type "make distclean" to discard
+    all the configuration information computed previously.
+
+(b) If you need to reconfigure because you changed any of the .in or .m4
+    files, you will need to run autoconf to create a new ./configure script.
+    Most users will NOT need to do this since a configure script is already
+    provided.
+
+    (in the tcl/unix directory)
+    autoconf
+
+(c) Type "./configure". This runs a configuration script created by GNU
+    autoconf, which configures Tcl for your system and creates a Makefile. The
+    configure script allows you to customize the Tcl configuration for your
+    site; for details on how you can do this, type "./configure --help" or
+    refer to the autoconf documentation (not included here). Tcl's "configure"
+    supports the following special switches in addition to the standard ones:
+
+	--enable-threads	If this switch is set, Tcl will compile itself
+				with multithreading support.
+	--disable-load		If this switch is specified then Tcl will
+				configure itself not to allow dynamic loading,
+				even if your system appears to support it.
+				Normally you can leave this switch out and Tcl
+				will build itself for dynamic loading if your
+				system supports it.
+	--disable-dll-unloading	Disables support for the [unload] command even
+				on platforms that can support it. Meaningless
+				when Tcl is compiled with --disable-load.
+	--enable-shared		If this switch is specified, Tcl will compile
+				itself as a shared library if it can figure
+				out how to do that on this platform. This is
+				the default on platforms where we know how to
+				build shared libraries.
+	--disable-shared	If this switch is specified, Tcl will compile
+				itself as a static library.
+	--enable-symbols	Build with debugging symbols. By default
+				standard debugging symbols are used. You can
+				specify the value "mem" to include
+				TCL_MEM_DEBUG memory debugging, "compile" to
+				include TCL_COMPILE_DEBUG debugging, or "all"
+				to enable all internal debugging.
+	--disable-symbols	Build without debugging symbols
+	--enable-64bit		Enable 64bit support (where applicable)
+	--disable-64bit		Disable 64bit support (where applicable)
+	--enable-64bit-vis	Enable 64bit Sparc VIS support
+	--disable-64bit-vis	Disable 64bit Sparc VIS support
+	--enable-langinfo	Allows use of modern nl_langinfo check for
+				better localization support. This is on by
+				default on platforms where nl_langinfo is
+				found.
+	--disable-langinfo	Specifically disables use of nl_langinfo.
+	--enable-man-symlinks	Use symlinks for linking the manpages that
+				should be reachable under several names.
+	--enable-man-suffix[=STRING]
+				Append STRING to the names of installed manual
+				pages (prior to applying compression, if that
+				is also enabled). If STRING is omitted,
+				defaults to 'tcl'.
+	--enable-man-compression=PROG
+				Compress the manpages using PROG.
+	--enable-dtrace		Enable tcl DTrace provider (if DTrace is
+				available on the platform), c.f. tclDTrace.d
+				for descriptions of the probes made available,
+				see http://wiki.tcl.tk/DTrace for more details
+	--with-encoding=ENCODING Specifies the encoding for compile-time
+				configuration values. Defaults to iso8859-1,
+				which is also sufficient for ASCII.
+	--with-tzdata=FLAG	Specifies whether to install timezone data. By
+				default, the configure script tries to detect
+				whether a usable timezone database is present
+				on the system already.
+
+    Mac OS X only (i.e. completely unsupported on other platforms):
+
+	--enable-framework	Package Tcl as a framework.
+	--disable-corefoundation Disable use of CoreFoundation API and revert
+				to standard select based notifier, required
+				when using naked fork (i.e. not followed by
+				execve).
+
+    Note: by default gcc will be used if it can be located on the PATH. If you
+    want to use cc instead of gcc, set the CC environment variable to "cc"
+    before running configure. It is not safe to edit the Makefile to use gcc
+    after configure is run. Also note that you should use the same compiler
+    when building extensions.
+
+    Note: be sure to use only absolute path names (those starting with "/") in
+    the --prefix and --exec-prefix options.
+
+(d) Type "make". This will create a library archive called "libtcl<version>.a"
+    or "libtcl<version>.so" and an interpreter application called "tclsh" that
+    allows you to type Tcl commands interactively or execute script files. It
+    will also create a stub library archive "libtclstub<version>.a" that
+    developers may link against other C code to produce loadable extensions
+    for Tcl.
+
+(e) If the make fails then you'll have to personalize the Makefile for your
+    site or possibly modify the distribution in other ways. First check the
+    porting Web page above to see if there are hints for compiling on your
+    system. If you need to modify Makefile, there are comments at the
+    beginning of it that describe the things you might want to change and how
+    to change them.
+
+(f) Type "make install" to install Tcl binaries and script files in standard
+    places. You'll need write permission on the installation directories to do
+    this. The installation directories are determined by the "configure"
+    script and may be specified with the standard --prefix and --exec-prefix
+    options to "configure". See the Makefile for information on what
+    directories were chosen; you can override these choices by modifying the
+    "prefix" and "exec_prefix" variables in the Makefile. The installed
+    binaries have embedded within them path values relative to the install
+    directory. If you change your mind about where Tcl should be installed,
+    start this procedure over again from step (a) so that the path embedded in
+    the binaries agrees with the install location.
+
+(g) At this point you can play with Tcl by running the installed "tclsh"
+    executable, or via the "make shell" target, and typing Tcl commands at the
+    interactive prompt.
+
+If you have trouble compiling Tcl, see the URL noted above about working
+platforms. It contains information that people have provided about changes
+they had to make to compile Tcl in various environments. We're also interested
+in hearing how to change the configuration setup so that Tcl compiles on
+additional platforms "out of the box".
+
+Test suite
+----------
+
+There is a relatively complete test suite for all of the Tcl core in the
+subdirectory "tests". To use it just type "make test" in this directory. You
+should then see a printout of the test files processed. If any errors occur,
+you'll see a much more substantial printout for each error. See the README
+file in the "tests" directory for more information on the test suite. Note:
+don't run the tests as superuser: this will cause several of them to fail. If
+a test is failing consistently, please send us a bug report with as much
+detail as you can manage to our tracker:
+
+	http://core.tcl.tk/tcl/reportlist
+
diff --git a/tcl8.6/unix/aclocal.m4 b/tcl8.6/unix/aclocal.m4
new file mode 100644
index 0000000..90d2e39
--- /dev/null
+++ b/tcl8.6/unix/aclocal.m4
@@ -0,0 +1 @@
+builtin(include,../unix/tcl.m4)
diff --git a/tcl8.6/unix/configure b/tcl8.6/unix/configure
new file mode 100755
index 0000000..34669af
--- /dev/null
+++ b/tcl8.6/unix/configure
@@ -0,0 +1,19901 @@
+#! /bin/sh
+# Guess values for system-dependent variables and create Makefiles.
+# Generated by GNU Autoconf 2.59 for tcl 8.6.
+#
+# Copyright (C) 2003 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 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 '${1+"$@"}'='"$@"'
+elif test -n "${BASH_VERSION+set}" && (set -o posix) >/dev/null 2>&1; then
+  set -o posix
+fi
+DUALCASE=1; export DUALCASE # for MKS sh
+
+# Support unset when possible.
+if ( (MAIL=60; unset MAIL) || exit) >/dev/null 2>&1; then
+  as_unset=unset
+else
+  as_unset=false
+fi
+
+
+# Work around bugs in pre-3.0 UWIN ksh.
+$as_unset ENV MAIL MAILPATH
+PS1='$ '
+PS2='> '
+PS4='+ '
+
+# NLS nuisances.
+for as_var in \
+  LANG LANGUAGE LC_ADDRESS LC_ALL LC_COLLATE LC_CTYPE LC_IDENTIFICATION \
+  LC_MEASUREMENT LC_MESSAGES LC_MONETARY LC_NAME LC_NUMERIC LC_PAPER \
+  LC_TELEPHONE LC_TIME
+do
+  if (set +x; test -z "`(eval $as_var=C; export $as_var) 2>&1`"); then
+    eval $as_var=C; export $as_var
+  else
+    $as_unset $as_var
+  fi
+done
+
+# Required to use basename.
+if expr a : '\(a\)' >/dev/null 2>&1; 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
+
+
+# Name of the executable.
+as_me=`$as_basename "$0" ||
+$as_expr X/"$0" : '.*/\([^/][^/]*\)/*$' \| \
+	 X"$0" : 'X\(//\)$' \| \
+	 X"$0" : 'X\(/\)$' \| \
+	 .     : '\(.\)' 2>/dev/null ||
+echo X/"$0" |
+    sed '/^.*\/\([^/][^/]*\)\/*$/{ s//\1/; q; }
+  	  /^X\/\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\/\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+
+
+# PATH needs CR, and LINENO needs CR and PATH.
+# 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
+
+# The user is always right.
+if test "${PATH_SEPARATOR+set}" != set; then
+  echo "#! /bin/sh" >conf$$.sh
+  echo  "exit 0"   >>conf$$.sh
+  chmod +x conf$$.sh
+  if (PATH="/nonexistent;."; conf$$.sh) >/dev/null 2>&1; then
+    PATH_SEPARATOR=';'
+  else
+    PATH_SEPARATOR=:
+  fi
+  rm -f conf$$.sh
+fi
+
+
+  as_lineno_1=$LINENO
+  as_lineno_2=$LINENO
+  as_lineno_3=`(expr $as_lineno_1 + 1) 2>/dev/null`
+  test "x$as_lineno_1" != "x$as_lineno_2" &&
+  test "x$as_lineno_3"  = "x$as_lineno_2"  || {
+  # Find who we are.  Look in the path if we contain no path at all
+  # relative or not.
+  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/$0 && break
+done
+
+       ;;
+  esac
+  # We did not find ourselves, most probably we were run as `sh COMMAND'
+  # in which case we are not to be found in the path.
+  if test "x$as_myself" = x; then
+    as_myself=$0
+  fi
+  if test ! -f "$as_myself"; then
+    { echo "$as_me: error: cannot find myself; rerun with an absolute path" >&2
+   { (exit 1); exit 1; }; }
+  fi
+  case $CONFIG_SHELL in
+  '')
+    as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in /bin$PATH_SEPARATOR/usr/bin$PATH_SEPARATOR$PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for as_base in sh bash ksh sh5; do
+	 case $as_dir in
+	 /*)
+	   if ("$as_dir/$as_base" -c '
+  as_lineno_1=$LINENO
+  as_lineno_2=$LINENO
+  as_lineno_3=`(expr $as_lineno_1 + 1) 2>/dev/null`
+  test "x$as_lineno_1" != "x$as_lineno_2" &&
+  test "x$as_lineno_3"  = "x$as_lineno_2" ') 2>/dev/null; then
+	     $as_unset BASH_ENV || test "${BASH_ENV+set}" != set || { BASH_ENV=; export BASH_ENV; }
+	     $as_unset ENV || test "${ENV+set}" != set || { ENV=; export ENV; }
+	     CONFIG_SHELL=$as_dir/$as_base
+	     export CONFIG_SHELL
+	     exec "$CONFIG_SHELL" "$0" ${1+"$@"}
+	   fi;;
+	 esac
+       done
+done
+;;
+  esac
+
+  # Create $as_me.lineno as a copy of $as_myself, but with $LINENO
+  # uniformly replaced by the line number.  The first 'sed' inserts a
+  # line-number line before each line; the second 'sed' does the real
+  # work.  The second script uses 'N' to pair each line-number line
+  # with the numbered line, and appends trailing '-' during
+  # substitution so that $LINENO is not a special case at line end.
+  # (Raja R Harinath suggested sed '=', and Paul Eggert wrote the
+  # second 'sed' script.  Blame Lee E. McMahon for sed's syntax.  :-)
+  sed '=' <$as_myself |
+    sed '
+      N
+      s,$,-,
+      : loop
+      s,^\(['$as_cr_digits']*\)\(.*\)[$]LINENO\([^'$as_cr_alnum'_]\),\1\2\1\3,
+      t loop
+      s,-$,,
+      s,^['$as_cr_digits']*\n,,
+    ' >$as_me.lineno &&
+  chmod +x $as_me.lineno ||
+    { echo "$as_me: error: cannot create $as_me.lineno; rerun with a POSIX shell" >&2
+   { (exit 1); exit 1; }; }
+
+  # Don't try to exec as it changes $[0], causing all sort of problems
+  # (the dirname of $[0] is not the place where we might find the
+  # original and so on.  Autoconf is especially sensible to this).
+  . ./$as_me.lineno
+  # Exit status is that of the last command.
+  exit
+}
+
+
+case `echo "testing\c"; echo 1,2,3`,`echo -n testing; echo 1,2,3` in
+  *c*,-n*) ECHO_N= ECHO_C='
+' ECHO_T='	' ;;
+  *c*,*  ) ECHO_N=-n ECHO_C= ECHO_T= ;;
+  *)       ECHO_N= ECHO_C='\c' ECHO_T= ;;
+esac
+
+if expr a : '\(a\)' >/dev/null 2>&1; then
+  as_expr=expr
+else
+  as_expr=false
+fi
+
+rm -f conf$$ conf$$.exe conf$$.file
+echo >conf$$.file
+if ln -s conf$$.file conf$$ 2>/dev/null; then
+  # We could just check for DJGPP; but this test a) works b) is more generic
+  # and c) will remain valid once DJGPP supports symlinks (DJGPP 2.04).
+  if test -f conf$$.exe; then
+    # Don't use ln at all; we don't have any links
+    as_ln_s='cp -p'
+  else
+    as_ln_s='ln -s'
+  fi
+elif ln conf$$.file conf$$ 2>/dev/null; then
+  as_ln_s=ln
+else
+  as_ln_s='cp -p'
+fi
+rm -f conf$$ conf$$.exe conf$$.file
+
+if mkdir -p . 2>/dev/null; then
+  as_mkdir_p=:
+else
+  test -d ./-p && rmdir ./-p
+  as_mkdir_p=false
+fi
+
+as_executable_p="test -f"
+
+# 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'"
+
+
+# IFS
+# We need space, tab and new line, in precisely that order.
+as_nl='
+'
+IFS=" 	$as_nl"
+
+# CDPATH.
+$as_unset CDPATH
+
+
+# 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`
+
+exec 6>&1
+
+#
+# Initializations.
+#
+ac_default_prefix=/usr/local
+ac_config_libobj_dir=.
+cross_compiling=no
+subdirs=
+MFLAGS=
+MAKEFLAGS=
+SHELL=${CONFIG_SHELL-/bin/sh}
+
+# Maximum number of lines to put in a shell here document.
+# This variable seems obsolete.  It should probably be removed, and
+# only ac_max_sed_lines should be used.
+: ${ac_max_here_lines=38}
+
+# Identity of this package.
+PACKAGE_NAME='tcl'
+PACKAGE_TARNAME='tcl'
+PACKAGE_VERSION='8.6'
+PACKAGE_STRING='tcl 8.6'
+PACKAGE_BUGREPORT=''
+
+# Factoring default headers for most tests.
+ac_includes_default="\
+#include <stdio.h>
+#if HAVE_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+#if HAVE_SYS_STAT_H
+# include <sys/stat.h>
+#endif
+#if STDC_HEADERS
+# include <stdlib.h>
+# include <stddef.h>
+#else
+# if HAVE_STDLIB_H
+#  include <stdlib.h>
+# endif
+#endif
+#if HAVE_STRING_H
+# if !STDC_HEADERS && HAVE_MEMORY_H
+#  include <memory.h>
+# endif
+# include <string.h>
+#endif
+#if HAVE_STRINGS_H
+# include <strings.h>
+#endif
+#if HAVE_INTTYPES_H
+# include <inttypes.h>
+#else
+# if HAVE_STDINT_H
+#  include <stdint.h>
+# endif
+#endif
+#if HAVE_UNISTD_H
+# include <unistd.h>
+#endif"
+
+ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS MAN_FLAGS CC CFLAGS LDFLAGS CPPFLAGS ac_ct_CC EXEEXT OBJEXT CPP EGREP TCL_THREADS TCLSH_PROG ZLIB_OBJS ZLIB_SRCS ZLIB_INCLUDE RANLIB ac_ct_RANLIB AR ac_ct_AR LIBOBJS TCL_LIBS DL_LIBS DL_OBJS PLAT_OBJS PLAT_SRCS LDAIX_SRC CFLAGS_DEBUG CFLAGS_OPTIMIZE CFLAGS_WARNING LDFLAGS_DEBUG LDFLAGS_OPTIMIZE CC_SEARCH_FLAGS LD_SEARCH_FLAGS STLIB_LD SHLIB_LD TCL_SHLIB_LD_EXTRAS TK_SHLIB_LD_EXTRAS SHLIB_LD_LIBS SHLIB_CFLAGS SHLIB_SUFFIX MAKE_LIB MAKE_STUB_LIB INSTALL_LIB DLL_INSTALL_DIR INSTALL_STUB_LIB CFLAGS_DEFAULT LDFLAGS_DEFAULT DTRACE TCL_VERSION TCL_MAJOR_VERSION TCL_MINOR_VERSION TCL_PATCH_LEVEL TCL_YEAR PKG_CFG_ARGS TCL_LIB_FILE TCL_LIB_FLAG TCL_LIB_SPEC TCL_STUB_LIB_FILE TCL_STUB_LIB_FLAG TCL_STUB_LIB_SPEC TCL_STUB_LIB_PATH TCL_INCLUDE_SPEC TCL_BUILD_STUB_LIB_SPEC TCL_BUILD_STUB_LIB_PATH TCL_SRC_DIR CFG_TCL_SHARED_LIB_SUFFIX CFG_TCL_UNSHARED_LIB_SUFFIX TCL_SHARED_BUILD LD_LIBRARY_PATH_VAR TCL_BUILD_LIB_SPEC TCL_LIB_VERSIONS_OK TCL_SHARED_LIB_SUFFIX TCL_UNSHARED_LIB_SUFFIX TCL_HAS_LONGLONG INSTALL_TZDATA DTRACE_SRC DTRACE_HDR DTRACE_OBJ MAKEFILE_SHELL BUILD_DLTEST TCL_PACKAGE_PATH TCL_MODULE_PATH TCL_LIBRARY PRIVATE_INCLUDE_DIR HTML_DIR PACKAGE_DIR EXTRA_CC_SWITCHES EXTRA_APP_CC_SWITCHES EXTRA_INSTALL EXTRA_INSTALL_BINARIES EXTRA_BUILD_HTML EXTRA_TCLSH_LIBS DLTEST_LD DLTEST_SUFFIX'
+ac_subst_files=''
+
+# Initialize some variables set by options.
+ac_init_help=
+ac_init_version=false
+# 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.
+bindir='${exec_prefix}/bin'
+sbindir='${exec_prefix}/sbin'
+libexecdir='${exec_prefix}/libexec'
+datadir='${prefix}/share'
+sysconfdir='${prefix}/etc'
+sharedstatedir='${prefix}/com'
+localstatedir='${prefix}/var'
+libdir='${exec_prefix}/lib'
+includedir='${prefix}/include'
+oldincludedir='/usr/include'
+infodir='${prefix}/info'
+mandir='${prefix}/man'
+
+ac_prev=
+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
+
+  ac_optarg=`expr "x$ac_option" : 'x[^=]*=\(.*\)'`
+
+  # Accept the important Cygnus configure options, so we can diagnose typos.
+
+  case $ac_option in
+
+  -bindir | --bindir | --bindi | --bind | --bin | --bi)
+    ac_prev=bindir ;;
+  -bindir=* | --bindir=* | --bindi=* | --bind=* | --bin=* | --bi=*)
+    bindir=$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 | --data | --dat | --da)
+    ac_prev=datadir ;;
+  -datadir=* | --datadir=* | --datadi=* | --datad=* | --data=* | --dat=* \
+  | --da=*)
+    datadir=$ac_optarg ;;
+
+  -disable-* | --disable-*)
+    ac_feature=`expr "x$ac_option" : 'x-*disable-\(.*\)'`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_feature" : ".*[^-_$as_cr_alnum]" >/dev/null &&
+      { echo "$as_me: error: invalid feature name: $ac_feature" >&2
+   { (exit 1); exit 1; }; }
+    ac_feature=`echo $ac_feature | sed 's/-/_/g'`
+    eval "enable_$ac_feature=no" ;;
+
+  -enable-* | --enable-*)
+    ac_feature=`expr "x$ac_option" : 'x-*enable-\([^=]*\)'`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_feature" : ".*[^-_$as_cr_alnum]" >/dev/null &&
+      { echo "$as_me: error: invalid feature name: $ac_feature" >&2
+   { (exit 1); exit 1; }; }
+    ac_feature=`echo $ac_feature | sed 's/-/_/g'`
+    case $ac_option in
+      *=*) ac_optarg=`echo "$ac_optarg" | sed "s/'/'\\\\\\\\''/g"`;;
+      *) ac_optarg=yes ;;
+    esac
+    eval "enable_$ac_feature='$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 ;;
+
+  -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 ;;
+
+  -localstatedir | --localstatedir | --localstatedi | --localstated \
+  | --localstate | --localstat | --localsta | --localst \
+  | --locals | --local | --loca | --loc | --lo)
+    ac_prev=localstatedir ;;
+  -localstatedir=* | --localstatedir=* | --localstatedi=* | --localstated=* \
+  | --localstate=* | --localstat=* | --localsta=* | --localst=* \
+  | --locals=* | --local=* | --loca=* | --loc=* | --lo=*)
+    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=$ac_optarg ;;
+
+  -q | -quiet | --quiet | --quie | --qui | --qu | --q \
+  | -silent | --silent | --silen | --sile | --sil)
+    silent=yes ;;
+
+  -sbindir | --sbindir | --sbindi | --sbind | --sbin | --sbi | --sb)
+    ac_prev=sbindir ;;
+  -sbindir=* | --sbindir=* | --sbindi=* | --sbind=* | --sbin=* \
+  | --sbi=* | --sb=*)
+    sbindir=$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=$ac_optarg ;;
+
+  -v | -verbose | --verbose | --verbos | --verbo | --verb)
+    verbose=yes ;;
+
+  -version | --version | --versio | --versi | --vers | -V)
+    ac_init_version=: ;;
+
+  -with-* | --with-*)
+    ac_package=`expr "x$ac_option" : 'x-*with-\([^=]*\)'`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_package" : ".*[^-_$as_cr_alnum]" >/dev/null &&
+      { echo "$as_me: error: invalid package name: $ac_package" >&2
+   { (exit 1); exit 1; }; }
+    ac_package=`echo $ac_package| sed 's/-/_/g'`
+    case $ac_option in
+      *=*) ac_optarg=`echo "$ac_optarg" | sed "s/'/'\\\\\\\\''/g"`;;
+      *) ac_optarg=yes ;;
+    esac
+    eval "with_$ac_package='$ac_optarg'" ;;
+
+  -without-* | --without-*)
+    ac_package=`expr "x$ac_option" : 'x-*without-\(.*\)'`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_package" : ".*[^-_$as_cr_alnum]" >/dev/null &&
+      { echo "$as_me: error: invalid package name: $ac_package" >&2
+   { (exit 1); exit 1; }; }
+    ac_package=`echo $ac_package | sed 's/-/_/g'`
+    eval "with_$ac_package=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 ;;
+
+  -*) { echo "$as_me: error: unrecognized option: $ac_option
+Try \`$0 --help' for more information." >&2
+   { (exit 1); exit 1; }; }
+    ;;
+
+  *=*)
+    ac_envvar=`expr "x$ac_option" : 'x\([^=]*\)='`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_envvar" : ".*[^_$as_cr_alnum]" >/dev/null &&
+      { echo "$as_me: error: invalid variable name: $ac_envvar" >&2
+   { (exit 1); exit 1; }; }
+    ac_optarg=`echo "$ac_optarg" | sed "s/'/'\\\\\\\\''/g"`
+    eval "$ac_envvar='$ac_optarg'"
+    export $ac_envvar ;;
+
+  *)
+    # FIXME: should be removed in autoconf 3.0.
+    echo "$as_me: WARNING: you should use --build, --host, --target" >&2
+    expr "x$ac_option" : ".*[^-._$as_cr_alnum]" >/dev/null &&
+      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 $ac_prev | sed 's/_/-/g'`
+  { echo "$as_me: error: missing argument to $ac_option" >&2
+   { (exit 1); exit 1; }; }
+fi
+
+# Be sure to have absolute paths.
+for ac_var in exec_prefix prefix
+do
+  eval ac_val=$`echo $ac_var`
+  case $ac_val in
+    [\\/$]* | ?:[\\/]* | NONE | '' ) ;;
+    *)  { echo "$as_me: error: expected an absolute directory name for --$ac_var: $ac_val" >&2
+   { (exit 1); exit 1; }; };;
+  esac
+done
+
+# Be sure to have absolute paths.
+for ac_var in bindir sbindir libexecdir datadir sysconfdir sharedstatedir \
+	      localstatedir libdir includedir oldincludedir infodir mandir
+do
+  eval ac_val=$`echo $ac_var`
+  case $ac_val in
+    [\\/$]* | ?:[\\/]* ) ;;
+    *)  { echo "$as_me: error: expected an absolute directory name for --$ac_var: $ac_val" >&2
+   { (exit 1); exit 1; }; };;
+  esac
+done
+
+# There might be people who depend on the old broken behavior: `$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$build_alias" = x; then
+    cross_compiling=maybe
+    echo "$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 "$silent" = yes && exec 6>/dev/null
+
+
+# Find the source files, if location was not specified.
+if test -z "$srcdir"; then
+  ac_srcdir_defaulted=yes
+  # Try the directory containing this script, then its parent.
+  ac_confdir=`(dirname "$0") 2>/dev/null ||
+$as_expr X"$0" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$0" : 'X\(//\)[^/]' \| \
+	 X"$0" : 'X\(//\)$' \| \
+	 X"$0" : 'X\(/\)' \| \
+	 .     : '\(.\)' 2>/dev/null ||
+echo X"$0" |
+    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
+  if test "$ac_srcdir_defaulted" = yes; then
+    { echo "$as_me: error: cannot find sources ($ac_unique_file) in $ac_confdir or .." >&2
+   { (exit 1); exit 1; }; }
+  else
+    { echo "$as_me: error: cannot find sources ($ac_unique_file) in $srcdir" >&2
+   { (exit 1); exit 1; }; }
+  fi
+fi
+(cd $srcdir && test -r ./$ac_unique_file) 2>/dev/null ||
+  { echo "$as_me: error: sources are in $srcdir, but \`cd $srcdir' does not work" >&2
+   { (exit 1); exit 1; }; }
+srcdir=`echo "$srcdir" | sed 's%\([^\\/]\)[\\/]*$%\1%'`
+ac_env_build_alias_set=${build_alias+set}
+ac_env_build_alias_value=$build_alias
+ac_cv_env_build_alias_set=${build_alias+set}
+ac_cv_env_build_alias_value=$build_alias
+ac_env_host_alias_set=${host_alias+set}
+ac_env_host_alias_value=$host_alias
+ac_cv_env_host_alias_set=${host_alias+set}
+ac_cv_env_host_alias_value=$host_alias
+ac_env_target_alias_set=${target_alias+set}
+ac_env_target_alias_value=$target_alias
+ac_cv_env_target_alias_set=${target_alias+set}
+ac_cv_env_target_alias_value=$target_alias
+ac_env_CC_set=${CC+set}
+ac_env_CC_value=$CC
+ac_cv_env_CC_set=${CC+set}
+ac_cv_env_CC_value=$CC
+ac_env_CFLAGS_set=${CFLAGS+set}
+ac_env_CFLAGS_value=$CFLAGS
+ac_cv_env_CFLAGS_set=${CFLAGS+set}
+ac_cv_env_CFLAGS_value=$CFLAGS
+ac_env_LDFLAGS_set=${LDFLAGS+set}
+ac_env_LDFLAGS_value=$LDFLAGS
+ac_cv_env_LDFLAGS_set=${LDFLAGS+set}
+ac_cv_env_LDFLAGS_value=$LDFLAGS
+ac_env_CPPFLAGS_set=${CPPFLAGS+set}
+ac_env_CPPFLAGS_value=$CPPFLAGS
+ac_cv_env_CPPFLAGS_set=${CPPFLAGS+set}
+ac_cv_env_CPPFLAGS_value=$CPPFLAGS
+ac_env_CPP_set=${CPP+set}
+ac_env_CPP_value=$CPP
+ac_cv_env_CPP_set=${CPP+set}
+ac_cv_env_CPP_value=$CPP
+
+#
+# Report the --help message.
+#
+if test "$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 tcl 8.6 to adapt to many kinds of systems.
+
+Usage: $0 [OPTION]... [VAR=VALUE]...
+
+To assign environment variables (e.g., CC, CFLAGS...), specify them as
+VAR=VALUE.  See below for descriptions of some of the useful variables.
+
+Defaults for the options are specified in brackets.
+
+Configuration:
+  -h, --help              display this help and exit
+      --help=short        display options specific to this package
+      --help=recursive    display the short help of all the included packages
+  -V, --version           display version information and exit
+  -q, --quiet, --silent   do not print \`checking...' messages
+      --cache-file=FILE   cache test results in FILE [disabled]
+  -C, --config-cache      alias for \`--cache-file=config.cache'
+  -n, --no-create         do not create output files
+      --srcdir=DIR        find the sources in DIR [configure dir or \`..']
+
+_ACEOF
+
+  cat <<_ACEOF
+Installation directories:
+  --prefix=PREFIX         install architecture-independent files in PREFIX
+			  [$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 \`$ac_default_prefix' using \`--prefix',
+for instance \`--prefix=\$HOME'.
+
+For better control, use the options below.
+
+Fine tuning of the installation directories:
+  --bindir=DIR           user executables [EPREFIX/bin]
+  --sbindir=DIR          system admin executables [EPREFIX/sbin]
+  --libexecdir=DIR       program executables [EPREFIX/libexec]
+  --datadir=DIR          read-only architecture-independent data [PREFIX/share]
+  --sysconfdir=DIR       read-only single-machine data [PREFIX/etc]
+  --sharedstatedir=DIR   modifiable architecture-independent data [PREFIX/com]
+  --localstatedir=DIR    modifiable single-machine data [PREFIX/var]
+  --libdir=DIR           object code libraries [EPREFIX/lib]
+  --includedir=DIR       C header files [PREFIX/include]
+  --oldincludedir=DIR    C header files for non-gcc [/usr/include]
+  --infodir=DIR          info documentation [PREFIX/info]
+  --mandir=DIR           man documentation [PREFIX/man]
+_ACEOF
+
+  cat <<\_ACEOF
+_ACEOF
+fi
+
+if test -n "$ac_init_help"; then
+  case $ac_init_help in
+     short | recursive ) echo "Configuration of tcl 8.6:";;
+   esac
+  cat <<\_ACEOF
+
+Optional Features:
+  --disable-FEATURE       do not include FEATURE (same as --enable-FEATURE=no)
+  --enable-FEATURE[=ARG]  include FEATURE [ARG=yes]
+  --enable-man-symlinks   use symlinks for the manpages (default: off)
+  --enable-man-compression=PROG
+                          compress the manpages with PROG (default: off)
+  --enable-man-suffix=STRING
+                          use STRING as a suffix to manpage file names
+                          (default: no, tcl if enabled without
+                          specifying STRING)
+  --enable-threads        build with threads (default: on)
+  --enable-shared         build and link with shared libraries (default: on)
+  --enable-64bit          enable 64bit support (default: off)
+  --enable-64bit-vis      enable 64bit Sparc VIS support (default: off)
+  --disable-rpath         disable rpath support (default: on)
+  --enable-corefoundation use CoreFoundation API on MacOSX (default: on)
+  --enable-load           allow dynamic loading and "load" command (default:
+                          on)
+  --enable-symbols        build with debugging symbols (default: off)
+  --enable-langinfo       use nl_langinfo if possible to determine encoding at
+                          startup, otherwise use old heuristic (default: on)
+  --enable-dll-unloading  enable the 'unload' command (default: on)
+  --enable-dtrace         build with DTrace support (default: off)
+  --enable-framework      package shared libraries in MacOSX frameworks
+                          (default: off)
+
+Optional Packages:
+  --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]
+  --without-PACKAGE       do not use PACKAGE (same as --with-PACKAGE=no)
+  --with-encoding         encoding for configuration values (default:
+                          iso8859-1)
+  --with-tzdata           install timezone data (default: autodetect)
+
+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>
+  CPPFLAGS    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.
+
+_ACEOF
+fi
+
+if test "$ac_init_help" = "recursive"; then
+  # If there are subdirs, report their specific --help.
+  ac_popdir=`pwd`
+  for ac_dir in : $ac_subdirs_all; do test "x$ac_dir" = x: && continue
+    test -d $ac_dir || continue
+    ac_builddir=.
+
+if test "$ac_dir" != .; then
+  ac_dir_suffix=/`echo "$ac_dir" | sed 's,^\.[\\/],,'`
+  # A "../" for each directory in $ac_dir_suffix.
+  ac_top_builddir=`echo "$ac_dir_suffix" | sed 's,/[^\\/]*,../,g'`
+else
+  ac_dir_suffix= ac_top_builddir=
+fi
+
+case $srcdir in
+  .)  # No --srcdir option.  We are building in place.
+    ac_srcdir=.
+    if test -z "$ac_top_builddir"; then
+       ac_top_srcdir=.
+    else
+       ac_top_srcdir=`echo $ac_top_builddir | sed 's,/$,,'`
+    fi ;;
+  [\\/]* | ?:[\\/]* )  # Absolute path.
+    ac_srcdir=$srcdir$ac_dir_suffix;
+    ac_top_srcdir=$srcdir ;;
+  *) # Relative path.
+    ac_srcdir=$ac_top_builddir$srcdir$ac_dir_suffix
+    ac_top_srcdir=$ac_top_builddir$srcdir ;;
+esac
+
+# Do not use `cd foo && pwd` to compute absolute paths, because
+# the directories may not exist.
+case `pwd` in
+.) ac_abs_builddir="$ac_dir";;
+*)
+  case "$ac_dir" in
+  .) ac_abs_builddir=`pwd`;;
+  [\\/]* | ?:[\\/]* ) ac_abs_builddir="$ac_dir";;
+  *) ac_abs_builddir=`pwd`/"$ac_dir";;
+  esac;;
+esac
+case $ac_abs_builddir in
+.) ac_abs_top_builddir=${ac_top_builddir}.;;
+*)
+  case ${ac_top_builddir}. in
+  .) ac_abs_top_builddir=$ac_abs_builddir;;
+  [\\/]* | ?:[\\/]* ) ac_abs_top_builddir=${ac_top_builddir}.;;
+  *) ac_abs_top_builddir=$ac_abs_builddir/${ac_top_builddir}.;;
+  esac;;
+esac
+case $ac_abs_builddir in
+.) ac_abs_srcdir=$ac_srcdir;;
+*)
+  case $ac_srcdir in
+  .) ac_abs_srcdir=$ac_abs_builddir;;
+  [\\/]* | ?:[\\/]* ) ac_abs_srcdir=$ac_srcdir;;
+  *) ac_abs_srcdir=$ac_abs_builddir/$ac_srcdir;;
+  esac;;
+esac
+case $ac_abs_builddir in
+.) ac_abs_top_srcdir=$ac_top_srcdir;;
+*)
+  case $ac_top_srcdir in
+  .) ac_abs_top_srcdir=$ac_abs_builddir;;
+  [\\/]* | ?:[\\/]* ) ac_abs_top_srcdir=$ac_top_srcdir;;
+  *) ac_abs_top_srcdir=$ac_abs_builddir/$ac_top_srcdir;;
+  esac;;
+esac
+
+    cd $ac_dir
+    # Check for guested configure; otherwise get Cygnus style 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
+    elif test -f $ac_srcdir/configure.ac ||
+	   test -f $ac_srcdir/configure.in; then
+      echo
+      $ac_configure --help
+    else
+      echo "$as_me: WARNING: no configuration information is in $ac_dir" >&2
+    fi
+    cd $ac_popdir
+  done
+fi
+
+test -n "$ac_init_help" && exit 0
+if $ac_init_version; then
+  cat <<\_ACEOF
+tcl configure 8.6
+generated by GNU Autoconf 2.59
+
+Copyright (C) 2003 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 0
+fi
+exec 5>config.log
+cat >&5 <<_ACEOF
+This file contains any messages produced by compilers while
+running configure, to aid debugging if configure makes a mistake.
+
+It was created by tcl $as_me 8.6, which was
+generated by GNU Autoconf 2.59.  Invocation command line was
+
+  $ $0 $@
+
+_ACEOF
+{
+cat <<_ASUNAME
+## --------- ##
+## Platform. ##
+## --------- ##
+
+hostname = `(hostname || uname -n) 2>/dev/null | sed 1q`
+uname -m = `(uname -m) 2>/dev/null || echo unknown`
+uname -r = `(uname -r) 2>/dev/null || echo unknown`
+uname -s = `(uname -s) 2>/dev/null || echo unknown`
+uname -v = `(uname -v) 2>/dev/null || echo unknown`
+
+/usr/bin/uname -p = `(/usr/bin/uname -p) 2>/dev/null || echo unknown`
+/bin/uname -X     = `(/bin/uname -X) 2>/dev/null     || echo unknown`
+
+/bin/arch              = `(/bin/arch) 2>/dev/null              || echo unknown`
+/usr/bin/arch -k       = `(/usr/bin/arch -k) 2>/dev/null       || echo unknown`
+/usr/convex/getsysinfo = `(/usr/convex/getsysinfo) 2>/dev/null || echo unknown`
+hostinfo               = `(hostinfo) 2>/dev/null               || echo unknown`
+/bin/machine           = `(/bin/machine) 2>/dev/null           || echo unknown`
+/usr/bin/oslevel       = `(/usr/bin/oslevel) 2>/dev/null       || echo unknown`
+/bin/universe          = `(/bin/universe) 2>/dev/null          || echo unknown`
+
+_ASUNAME
+
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  echo "PATH: $as_dir"
+done
+
+} >&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_sep=
+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=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
+    esac
+    case $ac_pass in
+    1) ac_configure_args0="$ac_configure_args0 '$ac_arg'" ;;
+    2)
+      ac_configure_args1="$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
+      ac_configure_args="$ac_configure_args$ac_sep'$ac_arg'"
+      # Get rid of the leading space.
+      ac_sep=" "
+      ;;
+    esac
+  done
+done
+$as_unset ac_configure_args0 || test "${ac_configure_args0+set}" != set || { ac_configure_args0=; export ac_configure_args0; }
+$as_unset ac_configure_args1 || test "${ac_configure_args1+set}" != set || { ac_configure_args1=; export ac_configure_args1; }
+
+# When interrupted or exit'd, cleanup temporary files, and complete
+# config.log.  We remove comments because anyway the quotes in there
+# would cause problems or look ugly.
+# WARNING: Be sure not to use single quotes in there, as some shells,
+# such as our DU 5.0 friend, will then `close' the trap.
+trap 'exit_status=$?
+  # 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,
+{
+  (set) 2>&1 |
+    case `(ac_space='"'"' '"'"'; set | grep ac_space) 2>&1` in
+    *ac_space=\ *)
+      sed -n \
+	"s/'"'"'/'"'"'\\\\'"'"''"'"'/g;
+	  s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1='"'"'\\2'"'"'/p"
+      ;;
+    *)
+      sed -n \
+	"s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1=\\2/p"
+      ;;
+    esac;
+}
+    echo
+
+    cat <<\_ASBOX
+## ----------------- ##
+## Output variables. ##
+## ----------------- ##
+_ASBOX
+    echo
+    for ac_var in $ac_subst_vars
+    do
+      eval ac_val=$`echo $ac_var`
+      echo "$ac_var='"'"'$ac_val'"'"'"
+    done | sort
+    echo
+
+    if test -n "$ac_subst_files"; then
+      cat <<\_ASBOX
+## ------------- ##
+## Output files. ##
+## ------------- ##
+_ASBOX
+      echo
+      for ac_var in $ac_subst_files
+      do
+	eval ac_val=$`echo $ac_var`
+	echo "$ac_var='"'"'$ac_val'"'"'"
+      done | sort
+      echo
+    fi
+
+    if test -s confdefs.h; then
+      cat <<\_ASBOX
+## ----------- ##
+## confdefs.h. ##
+## ----------- ##
+_ASBOX
+      echo
+      sed "/^$/d" confdefs.h | sort
+      echo
+    fi
+    test "$ac_signal" != 0 &&
+      echo "$as_me: caught signal $ac_signal"
+    echo "$as_me: exit $exit_status"
+  } >&5
+  rm -f core *.core &&
+  rm -rf conftest* confdefs* conf$$* $ac_clean_files &&
+    exit $exit_status
+     ' 0
+for ac_signal in 1 2 13 15; do
+  trap 'ac_signal='$ac_signal'; { (exit 1); exit 1; }' $ac_signal
+done
+ac_signal=0
+
+# confdefs.h avoids OS command line length limits that DEFS can exceed.
+rm -rf conftest* confdefs.h
+# AIX cpp loses on an empty file, so make sure it contains at least a newline.
+echo >confdefs.h
+
+# Predefined preprocessor variables.
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_NAME "$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
+
+
+# Let the site file select an alternate cache file if it wants to.
+# Prefer explicitly selected file to automatically selected ones.
+if test -z "$CONFIG_SITE"; then
+  if test "x$prefix" != xNONE; then
+    CONFIG_SITE="$prefix/share/config.site $prefix/etc/config.site"
+  else
+    CONFIG_SITE="$ac_default_prefix/share/config.site $ac_default_prefix/etc/config.site"
+  fi
+fi
+for ac_site_file in $CONFIG_SITE; do
+  if test -r "$ac_site_file"; then
+    { echo "$as_me:$LINENO: loading site script $ac_site_file" >&5
+echo "$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.
+  if test -f "$cache_file"; then
+    { echo "$as_me:$LINENO: loading cache $cache_file" >&5
+echo "$as_me: loading cache $cache_file" >&6;}
+    case $cache_file in
+      [\\/]* | ?:[\\/]* ) . $cache_file;;
+      *)                      . ./$cache_file;;
+    esac
+  fi
+else
+  { echo "$as_me:$LINENO: creating cache $cache_file" >&5
+echo "$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 `(set) 2>&1 |
+	       sed -n 's/^ac_env_\([a-zA-Z_0-9]*\)_set=.*/\1/p'`; 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,)
+      { echo "$as_me:$LINENO: error: \`$ac_var' was set to \`$ac_old_val' in the previous run" >&5
+echo "$as_me: error: \`$ac_var' was set to \`$ac_old_val' in the previous run" >&2;}
+      ac_cache_corrupted=: ;;
+    ,set)
+      { echo "$as_me:$LINENO: error: \`$ac_var' was not set in the previous run" >&5
+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
+	{ echo "$as_me:$LINENO: error: \`$ac_var' has changed since the previous run:" >&5
+echo "$as_me: error: \`$ac_var' has changed since the previous run:" >&2;}
+	{ echo "$as_me:$LINENO:   former value:  $ac_old_val" >&5
+echo "$as_me:   former value:  $ac_old_val" >&2;}
+	{ echo "$as_me:$LINENO:   current value: $ac_new_val" >&5
+echo "$as_me:   current value: $ac_new_val" >&2;}
+	ac_cache_corrupted=:
+      fi;;
+  esac
+  # Pass precious variables to config.status.
+  if test "$ac_new_set" = set; then
+    case $ac_new_val in
+    *" "*|*"	"*|*[\[\]\~\#\$\^\&\*\(\)\{\}\\\|\;\<\>\?\"\']*)
+      ac_arg=$ac_var=`echo "$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.
+      *) ac_configure_args="$ac_configure_args '$ac_arg'" ;;
+    esac
+  fi
+done
+if $ac_cache_corrupted; then
+  { echo "$as_me:$LINENO: error: changes in the environment can compromise the build" >&5
+echo "$as_me: error: changes in the environment can compromise the build" >&2;}
+  { { echo "$as_me:$LINENO: error: run \`make distclean' and/or \`rm $cache_file' and start over" >&5
+echo "$as_me: error: run \`make distclean' and/or \`rm $cache_file' and start over" >&2;}
+   { (exit 1); exit 1; }; }
+fi
+
+ac_ext=c
+ac_cpp='$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
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+TCL_VERSION=8.6
+TCL_MAJOR_VERSION=8
+TCL_MINOR_VERSION=6
+TCL_PATCH_LEVEL=".9"
+VERSION=${TCL_VERSION}
+
+EXTRA_INSTALL_BINARIES=${EXTRA_INSTALL_BINARIES:-"@:"}
+EXTRA_BUILD_HTML=${EXTRA_BUILD_HTML:-"@:"}
+
+#------------------------------------------------------------------------
+# Setup configure arguments for bundled packages
+#------------------------------------------------------------------------
+
+PKG_CFG_ARGS="$ac_configure_args ${PKG_CFG_ARGS}"
+
+if test -r "$cache_file" -a -f "$cache_file"; then
+    case $cache_file in
+	[\\/]* | ?:[\\/]* ) pkg_cache_file=$cache_file ;;
+	*) pkg_cache_file=../../$cache_file ;;
+    esac
+    PKG_CFG_ARGS="${PKG_CFG_ARGS} --cache-file=$pkg_cache_file"
+fi
+
+#------------------------------------------------------------------------
+# Empty slate for bundled packages, to avoid stale configuration
+#------------------------------------------------------------------------
+#rm -Rf pkgs
+if test -f Makefile; then
+    make distclean-packages
+fi
+
+#------------------------------------------------------------------------
+# Handle the --prefix=... option
+#------------------------------------------------------------------------
+
+if test "${prefix}" = "NONE"; then
+    prefix=/usr/local
+fi
+if test "${exec_prefix}" = "NONE"; then
+    exec_prefix=$prefix
+fi
+# Make sure srcdir is fully qualified!
+srcdir="`cd "$srcdir" ; pwd`"
+TCL_SRC_DIR="`cd "$srcdir"/..; pwd`"
+
+#------------------------------------------------------------------------
+# Compress and/or soft link the manpages?
+#------------------------------------------------------------------------
+
+
+    echo "$as_me:$LINENO: checking whether to use symlinks for manpages" >&5
+echo $ECHO_N "checking whether to use symlinks for manpages... $ECHO_C" >&6
+    # Check whether --enable-man-symlinks or --disable-man-symlinks was given.
+if test "${enable_man_symlinks+set}" = set; then
+  enableval="$enable_man_symlinks"
+  test "$enableval" != "no" && MAN_FLAGS="$MAN_FLAGS --symlinks"
+else
+  enableval="no"
+fi;
+    echo "$as_me:$LINENO: result: $enableval" >&5
+echo "${ECHO_T}$enableval" >&6
+
+    echo "$as_me:$LINENO: checking whether to compress the manpages" >&5
+echo $ECHO_N "checking whether to compress the manpages... $ECHO_C" >&6
+    # Check whether --enable-man-compression or --disable-man-compression was given.
+if test "${enable_man_compression+set}" = set; then
+  enableval="$enable_man_compression"
+  case $enableval in
+	    yes) { { echo "$as_me:$LINENO: error: missing argument to --enable-man-compression" >&5
+echo "$as_me: error: missing argument to --enable-man-compression" >&2;}
+   { (exit 1); exit 1; }; };;
+	    no)  ;;
+	    *)   MAN_FLAGS="$MAN_FLAGS --compress $enableval";;
+	esac
+else
+  enableval="no"
+fi;
+    echo "$as_me:$LINENO: result: $enableval" >&5
+echo "${ECHO_T}$enableval" >&6
+    if test "$enableval" != "no"; then
+	echo "$as_me:$LINENO: checking for compressed file suffix" >&5
+echo $ECHO_N "checking for compressed file suffix... $ECHO_C" >&6
+	touch TeST
+	$enableval TeST
+	Z=`ls TeST* | sed 's/^....//'`
+	rm -f TeST*
+	MAN_FLAGS="$MAN_FLAGS --extension $Z"
+	echo "$as_me:$LINENO: result: $Z" >&5
+echo "${ECHO_T}$Z" >&6
+    fi
+
+    echo "$as_me:$LINENO: checking whether to add a package name suffix for the manpages" >&5
+echo $ECHO_N "checking whether to add a package name suffix for the manpages... $ECHO_C" >&6
+    # Check whether --enable-man-suffix or --disable-man-suffix was given.
+if test "${enable_man_suffix+set}" = set; then
+  enableval="$enable_man_suffix"
+  case $enableval in
+	    yes) enableval="tcl" MAN_FLAGS="$MAN_FLAGS --suffix $enableval";;
+	    no)  ;;
+	    *)   MAN_FLAGS="$MAN_FLAGS --suffix $enableval";;
+	esac
+else
+  enableval="no"
+fi;
+    echo "$as_me:$LINENO: result: $enableval" >&5
+echo "${ECHO_T}$enableval" >&6
+
+
+
+
+#------------------------------------------------------------------------
+# Standard compiler checks
+#------------------------------------------------------------------------
+
+# If the user did not set CFLAGS, set it now to keep
+# the AC_PROG_CC macro from adding "-g -O2".
+if test "${CFLAGS+set}" != "set" ; then
+    CFLAGS=""
+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}gcc", so it can be a program name with args.
+set dummy ${ac_tool_prefix}gcc; ac_word=$2
+echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
+if test "${ac_cv_prog_CC+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test -n "$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 $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_CC="${ac_tool_prefix}gcc"
+    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+done
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  echo "$as_me:$LINENO: result: $CC" >&5
+echo "${ECHO_T}$CC" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}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=$2
+echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
+if test "${ac_cv_prog_ac_ct_CC+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test -n "$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 $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_CC="gcc"
+    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+done
+
+fi
+fi
+ac_ct_CC=$ac_cv_prog_ac_ct_CC
+if test -n "$ac_ct_CC"; then
+  echo "$as_me:$LINENO: result: $ac_ct_CC" >&5
+echo "${ECHO_T}$ac_ct_CC" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+
+  CC=$ac_ct_CC
+else
+  CC="$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=$2
+echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
+if test "${ac_cv_prog_CC+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test -n "$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 $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_CC="${ac_tool_prefix}cc"
+    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+done
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  echo "$as_me:$LINENO: result: $CC" >&5
+echo "${ECHO_T}$CC" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+
+fi
+if test -z "$ac_cv_prog_CC"; then
+  ac_ct_CC=$CC
+  # Extract the first word of "cc", so it can be a program name with args.
+set dummy cc; ac_word=$2
+echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
+if test "${ac_cv_prog_ac_ct_CC+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test -n "$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 $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_CC="cc"
+    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+done
+
+fi
+fi
+ac_ct_CC=$ac_cv_prog_ac_ct_CC
+if test -n "$ac_ct_CC"; then
+  echo "$as_me:$LINENO: result: $ac_ct_CC" >&5
+echo "${ECHO_T}$ac_ct_CC" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+
+  CC=$ac_ct_CC
+else
+  CC="$ac_cv_prog_CC"
+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=$2
+echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
+if test "${ac_cv_prog_CC+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test -n "$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 $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    if test "$as_dir/$ac_word$ac_exec_ext" = "/usr/ucb/cc"; then
+       ac_prog_rejected=yes
+       continue
+     fi
+    ac_cv_prog_CC="cc"
+    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+done
+
+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 "$CC"; then
+  echo "$as_me:$LINENO: result: $CC" >&5
+echo "${ECHO_T}$CC" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+
+fi
+if test -z "$CC"; then
+  if test -n "$ac_tool_prefix"; then
+  for ac_prog in cl
+  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=$2
+echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
+if test "${ac_cv_prog_CC+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test -n "$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 $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_CC="$ac_tool_prefix$ac_prog"
+    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+done
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  echo "$as_me:$LINENO: result: $CC" >&5
+echo "${ECHO_T}$CC" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+
+    test -n "$CC" && break
+  done
+fi
+if test -z "$CC"; then
+  ac_ct_CC=$CC
+  for ac_prog in cl
+do
+  # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
+if test "${ac_cv_prog_ac_ct_CC+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test -n "$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 $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_CC="$ac_prog"
+    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+done
+
+fi
+fi
+ac_ct_CC=$ac_cv_prog_ac_ct_CC
+if test -n "$ac_ct_CC"; then
+  echo "$as_me:$LINENO: result: $ac_ct_CC" >&5
+echo "${ECHO_T}$ac_ct_CC" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+
+  test -n "$ac_ct_CC" && break
+done
+
+  CC=$ac_ct_CC
+fi
+
+fi
+
+
+test -z "$CC" && { { echo "$as_me:$LINENO: error: no acceptable C compiler found in \$PATH
+See \`config.log' for more details." >&5
+echo "$as_me: error: no acceptable C compiler found in \$PATH
+See \`config.log' for more details." >&2;}
+   { (exit 1); exit 1; }; }
+
+# Provide some information about the compiler.
+echo "$as_me:$LINENO:" \
+     "checking for C compiler version" >&5
+ac_compiler=`set X $ac_compile; echo $2`
+{ (eval echo "$as_me:$LINENO: \"$ac_compiler --version </dev/null >&5\"") >&5
+  (eval $ac_compiler --version </dev/null >&5) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }
+{ (eval echo "$as_me:$LINENO: \"$ac_compiler -v </dev/null >&5\"") >&5
+  (eval $ac_compiler -v </dev/null >&5) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }
+{ (eval echo "$as_me:$LINENO: \"$ac_compiler -V </dev/null >&5\"") >&5
+  (eval $ac_compiler -V </dev/null >&5) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }
+
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+ac_clean_files_save=$ac_clean_files
+ac_clean_files="$ac_clean_files a.out 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.
+echo "$as_me:$LINENO: checking for C compiler default output file name" >&5
+echo $ECHO_N "checking for C compiler default output file name... $ECHO_C" >&6
+ac_link_default=`echo "$ac_link" | sed 's/ -o *conftest[^ ]*//'`
+if { (eval echo "$as_me:$LINENO: \"$ac_link_default\"") >&5
+  (eval $ac_link_default) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; then
+  # Find the output, starting from the most likely.  This scheme is
+# not robust to junk in `.', hence go to wildcards (a.*) only as a last
+# resort.
+
+# Be careful to initialize this variable, since it used to be cached.
+# Otherwise an old cache value of `no' led to `EXEEXT = no' in a Makefile.
+ac_cv_exeext=
+# b.out is created by i960 compilers.
+for ac_file in a_out.exe a.exe conftest.exe a.out conftest a.* conftest.* b.out
+do
+  test -f "$ac_file" || continue
+  case $ac_file in
+    *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.o | *.obj )
+	;;
+    conftest.$ac_ext )
+	# This is the source file.
+	;;
+    [ab].out )
+	# We found the default executable, but exeext='' is most
+	# certainly right.
+	break;;
+    *.* )
+	ac_cv_exeext=`expr "$ac_file" : '[^.]*\(\..*\)'`
+	# FIXME: I believe we export ac_cv_exeext for Libtool,
+	# but it would be cool to find out if it's true.  Does anybody
+	# maintain Libtool? --akim.
+	export ac_cv_exeext
+	break;;
+    * )
+	break;;
+  esac
+done
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+{ { echo "$as_me:$LINENO: error: C compiler cannot create executables
+See \`config.log' for more details." >&5
+echo "$as_me: error: C compiler cannot create executables
+See \`config.log' for more details." >&2;}
+   { (exit 77); exit 77; }; }
+fi
+
+ac_exeext=$ac_cv_exeext
+echo "$as_me:$LINENO: result: $ac_file" >&5
+echo "${ECHO_T}$ac_file" >&6
+
+# Check the compiler produces executables we can run.  If not, either
+# the compiler is broken, or we cross compile.
+echo "$as_me:$LINENO: checking whether the C compiler works" >&5
+echo $ECHO_N "checking whether the C compiler works... $ECHO_C" >&6
+# FIXME: These cross compiler hacks should be removed for Autoconf 3.0
+# If not cross compiling, check that we can run a simple program.
+if test "$cross_compiling" != yes; then
+  if { ac_try='./$ac_file'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+    cross_compiling=no
+  else
+    if test "$cross_compiling" = maybe; then
+	cross_compiling=yes
+    else
+	{ { echo "$as_me:$LINENO: error: cannot run C compiled programs.
+If you meant to cross compile, use \`--host'.
+See \`config.log' for more details." >&5
+echo "$as_me: error: cannot run C compiled programs.
+If you meant to cross compile, use \`--host'.
+See \`config.log' for more details." >&2;}
+   { (exit 1); exit 1; }; }
+    fi
+  fi
+fi
+echo "$as_me:$LINENO: result: yes" >&5
+echo "${ECHO_T}yes" >&6
+
+rm -f a.out a.exe conftest$ac_cv_exeext b.out
+ac_clean_files=$ac_clean_files_save
+# Check the compiler produces executables we can run.  If not, either
+# the compiler is broken, or we cross compile.
+echo "$as_me:$LINENO: checking whether we are cross compiling" >&5
+echo $ECHO_N "checking whether we are cross compiling... $ECHO_C" >&6
+echo "$as_me:$LINENO: result: $cross_compiling" >&5
+echo "${ECHO_T}$cross_compiling" >&6
+
+echo "$as_me:$LINENO: checking for suffix of executables" >&5
+echo $ECHO_N "checking for suffix of executables... $ECHO_C" >&6
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; then
+  # If both `conftest.exe' and `conftest' are `present' (well, observable)
+# catch `conftest.exe'.  For instance with Cygwin, `ls conftest' will
+# work properly (i.e., refer to `conftest.exe'), while it won't with
+# `rm'.
+for ac_file in conftest.exe conftest conftest.*; do
+  test -f "$ac_file" || continue
+  case $ac_file in
+    *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.o | *.obj ) ;;
+    *.* ) ac_cv_exeext=`expr "$ac_file" : '[^.]*\(\..*\)'`
+	  export ac_cv_exeext
+	  break;;
+    * ) break;;
+  esac
+done
+else
+  { { echo "$as_me:$LINENO: error: cannot compute suffix of executables: cannot compile and link
+See \`config.log' for more details." >&5
+echo "$as_me: error: cannot compute suffix of executables: cannot compile and link
+See \`config.log' for more details." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+
+rm -f conftest$ac_cv_exeext
+echo "$as_me:$LINENO: result: $ac_cv_exeext" >&5
+echo "${ECHO_T}$ac_cv_exeext" >&6
+
+rm -f conftest.$ac_ext
+EXEEXT=$ac_cv_exeext
+ac_exeext=$EXEEXT
+echo "$as_me:$LINENO: checking for suffix of object files" >&5
+echo $ECHO_N "checking for suffix of object files... $ECHO_C" >&6
+if test "${ac_cv_objext+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.o conftest.obj
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; then
+  for ac_file in `(ls conftest.o conftest.obj; ls conftest.*) 2>/dev/null`; do
+  case $ac_file in
+    *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg ) ;;
+    *) ac_cv_objext=`expr "$ac_file" : '.*\.\(.*\)'`
+       break;;
+  esac
+done
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+{ { echo "$as_me:$LINENO: error: cannot compute suffix of object files: cannot compile
+See \`config.log' for more details." >&5
+echo "$as_me: error: cannot compute suffix of object files: cannot compile
+See \`config.log' for more details." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+
+rm -f conftest.$ac_cv_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_objext" >&5
+echo "${ECHO_T}$ac_cv_objext" >&6
+OBJEXT=$ac_cv_objext
+ac_objext=$OBJEXT
+echo "$as_me:$LINENO: checking whether we are using the GNU C compiler" >&5
+echo $ECHO_N "checking whether we are using the GNU C compiler... $ECHO_C" >&6
+if test "${ac_cv_c_compiler_gnu+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+int
+main ()
+{
+#ifndef __GNUC__
+       choke me
+#endif
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_compiler_gnu=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_compiler_gnu=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+ac_cv_c_compiler_gnu=$ac_compiler_gnu
+
+fi
+echo "$as_me:$LINENO: result: $ac_cv_c_compiler_gnu" >&5
+echo "${ECHO_T}$ac_cv_c_compiler_gnu" >&6
+GCC=`test $ac_compiler_gnu = yes && echo yes`
+ac_test_CFLAGS=${CFLAGS+set}
+ac_save_CFLAGS=$CFLAGS
+CFLAGS="-g"
+echo "$as_me:$LINENO: checking whether $CC accepts -g" >&5
+echo $ECHO_N "checking whether $CC accepts -g... $ECHO_C" >&6
+if test "${ac_cv_prog_cc_g+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_prog_cc_g=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_prog_cc_g=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_prog_cc_g" >&5
+echo "${ECHO_T}$ac_cv_prog_cc_g" >&6
+if test "$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 "$GCC" = yes; then
+    CFLAGS="-O2"
+  else
+    CFLAGS=
+  fi
+fi
+echo "$as_me:$LINENO: checking for $CC option to accept ANSI C" >&5
+echo $ECHO_N "checking for $CC option to accept ANSI C... $ECHO_C" >&6
+if test "${ac_cv_prog_cc_stdc+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_cv_prog_cc_stdc=no
+ac_save_CC=$CC
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <stdarg.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+/* Most of the following tests are stolen from RCS 5.7's src/conf.sh.  */
+struct buf { int x; };
+FILE * (*rcsopen) (struct buf *, struct stat *, int);
+static char *e (p, i)
+     char **p;
+     int i;
+{
+  return p[i];
+}
+static char *f (char * (*g) (char **, int), char **p, ...)
+{
+  char *s;
+  va_list v;
+  va_start (v,p);
+  s = g (p, va_arg (v,int));
+  va_end (v);
+  return s;
+}
+
+/* OSF 4.0 Compaq cc is some sort of almost-ANSI by default.  It has
+   function prototypes and stuff, but not '\xHH' hex character constants.
+   These don't provoke an error unfortunately, instead are silently treated
+   as 'x'.  The following induces an error, until -std1 is added to get
+   proper ANSI mode.  Curiously '\x00'!='x' always comes out true, for an
+   array size at least.  It's necessary to write '\x00'==0 to get something
+   that's true only with -std1.  */
+int osf4_cc_array ['\x00' == 0 ? 1 : -1];
+
+int test (int i, double x);
+struct s1 {int (*f) (int a);};
+struct s2 {int (*f) (double a);};
+int pairnames (int, char **, FILE *(*)(struct buf *, struct stat *, int), int, int);
+int argc;
+char **argv;
+int
+main ()
+{
+return f (e, argv, 0) != argv[0]  ||  f (e, argv, 1) != argv[1];
+  ;
+  return 0;
+}
+_ACEOF
+# Don't try gcc -ansi; that turns off useful extensions and
+# breaks some systems' header files.
+# AIX			-qlanglvl=ansi
+# Ultrix and OSF/1	-std1
+# HP-UX 10.20 and later	-Ae
+# HP-UX older versions	-Aa -D_HPUX_SOURCE
+# SVR4			-Xc -D__EXTENSIONS__
+for ac_arg in "" -qlanglvl=ansi -std1 -Ae "-Aa -D_HPUX_SOURCE" "-Xc -D__EXTENSIONS__"
+do
+  CC="$ac_save_CC $ac_arg"
+  rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_prog_cc_stdc=$ac_arg
+break
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+fi
+rm -f conftest.err conftest.$ac_objext
+done
+rm -f conftest.$ac_ext conftest.$ac_objext
+CC=$ac_save_CC
+
+fi
+
+case "x$ac_cv_prog_cc_stdc" in
+  x|xno)
+    echo "$as_me:$LINENO: result: none needed" >&5
+echo "${ECHO_T}none needed" >&6 ;;
+  *)
+    echo "$as_me:$LINENO: result: $ac_cv_prog_cc_stdc" >&5
+echo "${ECHO_T}$ac_cv_prog_cc_stdc" >&6
+    CC="$CC $ac_cv_prog_cc_stdc" ;;
+esac
+
+# Some people use a C++ compiler to compile C.  Since we use `exit',
+# in C++ we need to declare it.  In case someone uses the same compiler
+# for both compiling C and C++ we need to have the C++ compiler decide
+# the declaration of exit, since it's the most demanding environment.
+cat >conftest.$ac_ext <<_ACEOF
+#ifndef __cplusplus
+  choke me
+#endif
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  for ac_declaration in \
+   '' \
+   'extern "C" void std::exit (int) throw (); using std::exit;' \
+   'extern "C" void std::exit (int); using std::exit;' \
+   'extern "C" void exit (int) throw ();' \
+   'extern "C" void exit (int);' \
+   'void exit (int);'
+do
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_declaration
+#include <stdlib.h>
+int
+main ()
+{
+exit (42);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  :
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+continue
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_declaration
+int
+main ()
+{
+exit (42);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  break
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+done
+rm -f conftest*
+if test -n "$ac_declaration"; then
+  echo '#ifdef __cplusplus' >>confdefs.h
+  echo $ac_declaration      >>confdefs.h
+  echo '#endif'             >>confdefs.h
+fi
+
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+fi
+rm -f conftest.err conftest.$ac_objext 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
+
+
+echo "$as_me:$LINENO: checking for inline" >&5
+echo $ECHO_N "checking for inline... $ECHO_C" >&6
+if test "${ac_cv_c_inline+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_cv_c_inline=no
+for ac_kw in inline __inline__ __inline; do
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#ifndef __cplusplus
+typedef int foo_t;
+static $ac_kw foo_t static_foo () {return 0; }
+$ac_kw foo_t foo () {return 0; }
+#endif
+
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_c_inline=$ac_kw; break
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+done
+
+fi
+echo "$as_me:$LINENO: result: $ac_cv_c_inline" >&5
+echo "${ECHO_T}$ac_cv_c_inline" >&6
+
+
+case $ac_cv_c_inline in
+  inline | yes) ;;
+  *)
+    case $ac_cv_c_inline in
+      no) ac_val=;;
+      *) ac_val=$ac_cv_c_inline;;
+    esac
+    cat >>confdefs.h <<_ACEOF
+#ifndef __cplusplus
+#define inline $ac_val
+#endif
+_ACEOF
+    ;;
+esac
+
+
+#--------------------------------------------------------------------
+# Supply substitutes for missing POSIX header files.  Special notes:
+#	- stdlib.h doesn't define strtol, strtoul, or
+#	  strtod insome versions of SunOS
+#	- some versions of string.h don't declare procedures such
+#	  as strstr
+# Do this early, otherwise an autoconf bug throws errors on configure
+#--------------------------------------------------------------------
+
+ac_ext=c
+ac_cpp='$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
+echo "$as_me:$LINENO: checking how to run the C preprocessor" >&5
+echo $ECHO_N "checking how to run the C preprocessor... $ECHO_C" >&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
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+      # Double quotes because CPP needs to be expanded
+    for CPP in "$CC -E" "$CC -E -traditional-cpp" "/lib/cpp"
+    do
+      ac_preproc_ok=false
+for ac_c_preproc_warn_flag in '' yes
+do
+  # Use a header file that comes with gcc, so configuring glibc
+  # with a fresh cross-compiler works.
+  # Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+  # <limits.h> exists even on freestanding compilers.
+  # On the NeXT, cc -E runs the code through the compiler's parser,
+  # not just through cpp. "Syntax error" is here to catch this case.
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+		     Syntax error
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  :
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  # Broken: fails on valid input.
+continue
+fi
+rm -f conftest.err conftest.$ac_ext
+
+  # OK, works on sane cases.  Now check whether non-existent headers
+  # can be detected and how.
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <ac_nonexistent.h>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  # Broken: success on invalid input.
+continue
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  # Passes both tests.
+ac_preproc_ok=:
+break
+fi
+rm -f conftest.err conftest.$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
+echo "$as_me:$LINENO: result: $CPP" >&5
+echo "${ECHO_T}$CPP" >&6
+ac_preproc_ok=false
+for ac_c_preproc_warn_flag in '' yes
+do
+  # Use a header file that comes with gcc, so configuring glibc
+  # with a fresh cross-compiler works.
+  # Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+  # <limits.h> exists even on freestanding compilers.
+  # On the NeXT, cc -E runs the code through the compiler's parser,
+  # not just through cpp. "Syntax error" is here to catch this case.
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+		     Syntax error
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  :
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  # Broken: fails on valid input.
+continue
+fi
+rm -f conftest.err conftest.$ac_ext
+
+  # OK, works on sane cases.  Now check whether non-existent headers
+  # can be detected and how.
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <ac_nonexistent.h>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  # Broken: success on invalid input.
+continue
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  # Passes both tests.
+ac_preproc_ok=:
+break
+fi
+rm -f conftest.err conftest.$ac_ext
+
+done
+# Because of `break', _AC_PREPROC_IFELSE's cleaning code was skipped.
+rm -f conftest.err conftest.$ac_ext
+if $ac_preproc_ok; then
+  :
+else
+  { { echo "$as_me:$LINENO: error: C preprocessor \"$CPP\" fails sanity check
+See \`config.log' for more details." >&5
+echo "$as_me: error: C preprocessor \"$CPP\" fails sanity check
+See \`config.log' for more details." >&2;}
+   { (exit 1); exit 1; }; }
+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
+
+
+echo "$as_me:$LINENO: checking for egrep" >&5
+echo $ECHO_N "checking for egrep... $ECHO_C" >&6
+if test "${ac_cv_prog_egrep+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if echo a | (grep -E '(a|b)') >/dev/null 2>&1
+    then ac_cv_prog_egrep='grep -E'
+    else ac_cv_prog_egrep='egrep'
+    fi
+fi
+echo "$as_me:$LINENO: result: $ac_cv_prog_egrep" >&5
+echo "${ECHO_T}$ac_cv_prog_egrep" >&6
+ EGREP=$ac_cv_prog_egrep
+
+
+echo "$as_me:$LINENO: checking for ANSI C header files" >&5
+echo $ECHO_N "checking for ANSI C header files... $ECHO_C" >&6
+if test "${ac_cv_header_stdc+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+#include <float.h>
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_header_stdc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_header_stdc=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+
+if test $ac_cv_header_stdc = yes; then
+  # SunOS 4.x string.h does not declare mem*, contrary to ANSI.
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* 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 $ac_cv_header_stdc = yes; then
+  # ISC 2.0.2 stdlib.h does not declare free, contrary to ANSI.
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* 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 >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <ctype.h>
+#if ((' ' & 0x0FF) == 0x020)
+# define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
+# define TOUPPER(c) (ISLOWER(c) ? 'A' + ((c) - 'a') : (c))
+#else
+# define ISLOWER(c) \
+		   (('a' <= (c) && (c) <= 'i') \
+		     || ('j' <= (c) && (c) <= 'r') \
+		     || ('s' <= (c) && (c) <= 'z'))
+# define TOUPPER(c) (ISLOWER(c) ? ((c) | 0x40) : (c))
+#endif
+
+#define XOR(e, f) (((e) && !(f)) || (!(e) && (f)))
+int
+main ()
+{
+  int i;
+  for (i = 0; i < 256; i++)
+    if (XOR (islower (i), ISLOWER (i))
+	|| toupper (i) != TOUPPER (i))
+      exit(2);
+  exit (0);
+}
+_ACEOF
+rm -f conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && { ac_try='./conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  :
+else
+  echo "$as_me: program exited with status $ac_status" >&5
+echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+( exit $ac_status )
+ac_cv_header_stdc=no
+fi
+rm -f core *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
+fi
+fi
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_stdc" >&5
+echo "${ECHO_T}$ac_cv_header_stdc" >&6
+if test $ac_cv_header_stdc = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define STDC_HEADERS 1
+_ACEOF
+
+fi
+
+# On IRIX 5.3, sys/types and inttypes.h are conflicting.
+
+
+
+
+
+
+
+
+
+for ac_header in sys/types.h sys/stat.h stdlib.h string.h memory.h strings.h \
+		  inttypes.h stdint.h unistd.h
+do
+as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+
+#include <$ac_header>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_Header=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_Header=no"
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+
+done
+
+
+
+    echo "$as_me:$LINENO: checking dirent.h" >&5
+echo $ECHO_N "checking dirent.h... $ECHO_C" >&6
+if test "${tcl_cv_dirent_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <sys/types.h>
+#include <dirent.h>
+int
+main ()
+{
+
+#ifndef _POSIX_SOURCE
+#   ifdef __Lynx__
+	/*
+	 * Generate compilation error to make the test fail:  Lynx headers
+	 * are only valid if really in the POSIX environment.
+	 */
+
+	missing_procedure();
+#   endif
+#endif
+DIR *d;
+struct dirent *entryPtr;
+char *p;
+d = opendir("foobar");
+entryPtr = readdir(d);
+p = entryPtr->d_name;
+closedir(d);
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_cv_dirent_h=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+tcl_cv_dirent_h=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $tcl_cv_dirent_h" >&5
+echo "${ECHO_T}$tcl_cv_dirent_h" >&6
+
+    if test $tcl_cv_dirent_h = no; then
+
+cat >>confdefs.h <<\_ACEOF
+#define NO_DIRENT_H 1
+_ACEOF
+
+    fi
+
+    if test "${ac_cv_header_float_h+set}" = set; then
+  echo "$as_me:$LINENO: checking for float.h" >&5
+echo $ECHO_N "checking for float.h... $ECHO_C" >&6
+if test "${ac_cv_header_float_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_float_h" >&5
+echo "${ECHO_T}$ac_cv_header_float_h" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking float.h usability" >&5
+echo $ECHO_N "checking float.h usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <float.h>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_header_compiler=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
+
+# Is the header present?
+echo "$as_me:$LINENO: checking float.h presence" >&5
+echo $ECHO_N "checking float.h presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <float.h>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: float.h: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: float.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: float.h: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: float.h: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: float.h: present but cannot be compiled" >&5
+echo "$as_me: WARNING: float.h: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: float.h:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: float.h:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: float.h: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: float.h: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: float.h:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: float.h:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: float.h: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: float.h: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: float.h: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: float.h: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ------------------------------ ##
+## Report this to the tcl lists.  ##
+## ------------------------------ ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for float.h" >&5
+echo $ECHO_N "checking for float.h... $ECHO_C" >&6
+if test "${ac_cv_header_float_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_cv_header_float_h=$ac_header_preproc
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_float_h" >&5
+echo "${ECHO_T}$ac_cv_header_float_h" >&6
+
+fi
+if test $ac_cv_header_float_h = yes; then
+  :
+else
+
+cat >>confdefs.h <<\_ACEOF
+#define NO_FLOAT_H 1
+_ACEOF
+
+fi
+
+
+    if test "${ac_cv_header_values_h+set}" = set; then
+  echo "$as_me:$LINENO: checking for values.h" >&5
+echo $ECHO_N "checking for values.h... $ECHO_C" >&6
+if test "${ac_cv_header_values_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_values_h" >&5
+echo "${ECHO_T}$ac_cv_header_values_h" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking values.h usability" >&5
+echo $ECHO_N "checking values.h usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <values.h>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_header_compiler=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
+
+# Is the header present?
+echo "$as_me:$LINENO: checking values.h presence" >&5
+echo $ECHO_N "checking values.h presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <values.h>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: values.h: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: values.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: values.h: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: values.h: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: values.h: present but cannot be compiled" >&5
+echo "$as_me: WARNING: values.h: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: values.h:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: values.h:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: values.h: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: values.h: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: values.h:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: values.h:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: values.h: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: values.h: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: values.h: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: values.h: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ------------------------------ ##
+## Report this to the tcl lists.  ##
+## ------------------------------ ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for values.h" >&5
+echo $ECHO_N "checking for values.h... $ECHO_C" >&6
+if test "${ac_cv_header_values_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_cv_header_values_h=$ac_header_preproc
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_values_h" >&5
+echo "${ECHO_T}$ac_cv_header_values_h" >&6
+
+fi
+if test $ac_cv_header_values_h = yes; then
+  :
+else
+
+cat >>confdefs.h <<\_ACEOF
+#define NO_VALUES_H 1
+_ACEOF
+
+fi
+
+
+    if test "${ac_cv_header_stdlib_h+set}" = set; then
+  echo "$as_me:$LINENO: checking for stdlib.h" >&5
+echo $ECHO_N "checking for stdlib.h... $ECHO_C" >&6
+if test "${ac_cv_header_stdlib_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_stdlib_h" >&5
+echo "${ECHO_T}$ac_cv_header_stdlib_h" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking stdlib.h usability" >&5
+echo $ECHO_N "checking stdlib.h usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <stdlib.h>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_header_compiler=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
+
+# Is the header present?
+echo "$as_me:$LINENO: checking stdlib.h presence" >&5
+echo $ECHO_N "checking stdlib.h presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <stdlib.h>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: stdlib.h: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: stdlib.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: stdlib.h: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: stdlib.h: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: stdlib.h: present but cannot be compiled" >&5
+echo "$as_me: WARNING: stdlib.h: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: stdlib.h:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: stdlib.h:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: stdlib.h: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: stdlib.h: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: stdlib.h:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: stdlib.h:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: stdlib.h: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: stdlib.h: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: stdlib.h: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: stdlib.h: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ------------------------------ ##
+## Report this to the tcl lists.  ##
+## ------------------------------ ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for stdlib.h" >&5
+echo $ECHO_N "checking for stdlib.h... $ECHO_C" >&6
+if test "${ac_cv_header_stdlib_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_cv_header_stdlib_h=$ac_header_preproc
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_stdlib_h" >&5
+echo "${ECHO_T}$ac_cv_header_stdlib_h" >&6
+
+fi
+if test $ac_cv_header_stdlib_h = yes; then
+  tcl_ok=1
+else
+  tcl_ok=0
+fi
+
+
+    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <stdlib.h>
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "strtol" >/dev/null 2>&1; then
+  :
+else
+  tcl_ok=0
+fi
+rm -f conftest*
+
+    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <stdlib.h>
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "strtoul" >/dev/null 2>&1; then
+  :
+else
+  tcl_ok=0
+fi
+rm -f conftest*
+
+    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <stdlib.h>
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "strtod" >/dev/null 2>&1; then
+  :
+else
+  tcl_ok=0
+fi
+rm -f conftest*
+
+    if test $tcl_ok = 0; then
+
+cat >>confdefs.h <<\_ACEOF
+#define NO_STDLIB_H 1
+_ACEOF
+
+    fi
+    if test "${ac_cv_header_string_h+set}" = set; then
+  echo "$as_me:$LINENO: checking for string.h" >&5
+echo $ECHO_N "checking for string.h... $ECHO_C" >&6
+if test "${ac_cv_header_string_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_string_h" >&5
+echo "${ECHO_T}$ac_cv_header_string_h" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking string.h usability" >&5
+echo $ECHO_N "checking string.h usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <string.h>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_header_compiler=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
+
+# Is the header present?
+echo "$as_me:$LINENO: checking string.h presence" >&5
+echo $ECHO_N "checking string.h presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <string.h>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: string.h: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: string.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: string.h: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: string.h: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: string.h: present but cannot be compiled" >&5
+echo "$as_me: WARNING: string.h: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: string.h:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: string.h:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: string.h: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: string.h: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: string.h:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: string.h:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: string.h: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: string.h: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: string.h: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: string.h: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ------------------------------ ##
+## Report this to the tcl lists.  ##
+## ------------------------------ ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for string.h" >&5
+echo $ECHO_N "checking for string.h... $ECHO_C" >&6
+if test "${ac_cv_header_string_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_cv_header_string_h=$ac_header_preproc
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_string_h" >&5
+echo "${ECHO_T}$ac_cv_header_string_h" >&6
+
+fi
+if test $ac_cv_header_string_h = yes; then
+  tcl_ok=1
+else
+  tcl_ok=0
+fi
+
+
+    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <string.h>
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "strstr" >/dev/null 2>&1; then
+  :
+else
+  tcl_ok=0
+fi
+rm -f conftest*
+
+    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <string.h>
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "strerror" >/dev/null 2>&1; then
+  :
+else
+  tcl_ok=0
+fi
+rm -f conftest*
+
+
+    # See also memmove check below for a place where NO_STRING_H can be
+    # set and why.
+
+    if test $tcl_ok = 0; then
+
+cat >>confdefs.h <<\_ACEOF
+#define NO_STRING_H 1
+_ACEOF
+
+    fi
+
+    if test "${ac_cv_header_sys_wait_h+set}" = set; then
+  echo "$as_me:$LINENO: checking for sys/wait.h" >&5
+echo $ECHO_N "checking for sys/wait.h... $ECHO_C" >&6
+if test "${ac_cv_header_sys_wait_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_sys_wait_h" >&5
+echo "${ECHO_T}$ac_cv_header_sys_wait_h" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking sys/wait.h usability" >&5
+echo $ECHO_N "checking sys/wait.h usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <sys/wait.h>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_header_compiler=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
+
+# Is the header present?
+echo "$as_me:$LINENO: checking sys/wait.h presence" >&5
+echo $ECHO_N "checking sys/wait.h presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <sys/wait.h>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: sys/wait.h: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: sys/wait.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: sys/wait.h: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: sys/wait.h: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: sys/wait.h: present but cannot be compiled" >&5
+echo "$as_me: WARNING: sys/wait.h: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: sys/wait.h:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: sys/wait.h:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: sys/wait.h: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: sys/wait.h: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: sys/wait.h:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: sys/wait.h:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: sys/wait.h: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: sys/wait.h: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: sys/wait.h: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: sys/wait.h: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ------------------------------ ##
+## Report this to the tcl lists.  ##
+## ------------------------------ ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for sys/wait.h" >&5
+echo $ECHO_N "checking for sys/wait.h... $ECHO_C" >&6
+if test "${ac_cv_header_sys_wait_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_cv_header_sys_wait_h=$ac_header_preproc
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_sys_wait_h" >&5
+echo "${ECHO_T}$ac_cv_header_sys_wait_h" >&6
+
+fi
+if test $ac_cv_header_sys_wait_h = yes; then
+  :
+else
+
+cat >>confdefs.h <<\_ACEOF
+#define NO_SYS_WAIT_H 1
+_ACEOF
+
+fi
+
+
+    if test "${ac_cv_header_dlfcn_h+set}" = set; then
+  echo "$as_me:$LINENO: checking for dlfcn.h" >&5
+echo $ECHO_N "checking for dlfcn.h... $ECHO_C" >&6
+if test "${ac_cv_header_dlfcn_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_dlfcn_h" >&5
+echo "${ECHO_T}$ac_cv_header_dlfcn_h" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking dlfcn.h usability" >&5
+echo $ECHO_N "checking dlfcn.h usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <dlfcn.h>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_header_compiler=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
+
+# Is the header present?
+echo "$as_me:$LINENO: checking dlfcn.h presence" >&5
+echo $ECHO_N "checking dlfcn.h presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <dlfcn.h>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: dlfcn.h: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: dlfcn.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: dlfcn.h: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: dlfcn.h: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: dlfcn.h: present but cannot be compiled" >&5
+echo "$as_me: WARNING: dlfcn.h: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: dlfcn.h:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: dlfcn.h:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: dlfcn.h: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: dlfcn.h: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: dlfcn.h:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: dlfcn.h:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: dlfcn.h: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: dlfcn.h: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: dlfcn.h: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: dlfcn.h: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ------------------------------ ##
+## Report this to the tcl lists.  ##
+## ------------------------------ ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for dlfcn.h" >&5
+echo $ECHO_N "checking for dlfcn.h... $ECHO_C" >&6
+if test "${ac_cv_header_dlfcn_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_cv_header_dlfcn_h=$ac_header_preproc
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_dlfcn_h" >&5
+echo "${ECHO_T}$ac_cv_header_dlfcn_h" >&6
+
+fi
+if test $ac_cv_header_dlfcn_h = yes; then
+  :
+else
+
+cat >>confdefs.h <<\_ACEOF
+#define NO_DLFCN_H 1
+_ACEOF
+
+fi
+
+
+
+    # OS/390 lacks sys/param.h (and doesn't need it, by chance).
+
+for ac_header in sys/param.h
+do
+as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking $ac_header usability" >&5
+echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <$ac_header>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_header_compiler=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
+
+# Is the header present?
+echo "$as_me:$LINENO: checking $ac_header presence" >&5
+echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <$ac_header>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
+echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ------------------------------ ##
+## Report this to the tcl lists.  ##
+## ------------------------------ ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  eval "$as_ac_Header=\$ac_header_preproc"
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+
+fi
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+
+done
+
+
+
+#--------------------------------------------------------------------
+# Determines the correct executable file extension (.exe)
+#--------------------------------------------------------------------
+
+
+
+#------------------------------------------------------------------------
+# If we're using GCC, see if the compiler understands -pipe.  If so, use it.
+# It makes compiling go faster.  (This is only a performance feature.)
+#------------------------------------------------------------------------
+
+if test -z "$no_pipe" && test -n "$GCC"; then
+    echo "$as_me:$LINENO: checking if the compiler understands -pipe" >&5
+echo $ECHO_N "checking if the compiler understands -pipe... $ECHO_C" >&6
+if test "${tcl_cv_cc_pipe+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -pipe"
+	cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_cv_cc_pipe=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+tcl_cv_cc_pipe=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+	CFLAGS=$hold_cflags
+fi
+echo "$as_me:$LINENO: result: $tcl_cv_cc_pipe" >&5
+echo "${ECHO_T}$tcl_cv_cc_pipe" >&6
+    if test $tcl_cv_cc_pipe = yes; then
+	CFLAGS="$CFLAGS -pipe"
+    fi
+fi
+
+#------------------------------------------------------------------------
+# Threads support
+#------------------------------------------------------------------------
+
+
+    # Check whether --enable-threads or --disable-threads was given.
+if test "${enable_threads+set}" = set; then
+  enableval="$enable_threads"
+  tcl_ok=$enableval
+else
+  tcl_ok=yes
+fi;
+
+    if test "${TCL_THREADS}" = 1; then
+	tcl_threaded_core=1;
+    fi
+
+    if test "$tcl_ok" = "yes" -o "${TCL_THREADS}" = 1; then
+	TCL_THREADS=1
+	# USE_THREAD_ALLOC tells us to try the special thread-based
+	# allocator that significantly reduces lock contention
+
+cat >>confdefs.h <<\_ACEOF
+#define USE_THREAD_ALLOC 1
+_ACEOF
+
+
+cat >>confdefs.h <<\_ACEOF
+#define _REENTRANT 1
+_ACEOF
+
+	if test "`uname -s`" = "SunOS" ; then
+
+cat >>confdefs.h <<\_ACEOF
+#define _POSIX_PTHREAD_SEMANTICS 1
+_ACEOF
+
+	fi
+
+cat >>confdefs.h <<\_ACEOF
+#define _THREAD_SAFE 1
+_ACEOF
+
+	echo "$as_me:$LINENO: checking for pthread_mutex_init in -lpthread" >&5
+echo $ECHO_N "checking for pthread_mutex_init in -lpthread... $ECHO_C" >&6
+if test "${ac_cv_lib_pthread_pthread_mutex_init+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lpthread  $LIBS"
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char pthread_mutex_init ();
+int
+main ()
+{
+pthread_mutex_init ();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_lib_pthread_pthread_mutex_init=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_lib_pthread_pthread_mutex_init=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+echo "$as_me:$LINENO: result: $ac_cv_lib_pthread_pthread_mutex_init" >&5
+echo "${ECHO_T}$ac_cv_lib_pthread_pthread_mutex_init" >&6
+if test $ac_cv_lib_pthread_pthread_mutex_init = yes; then
+  tcl_ok=yes
+else
+  tcl_ok=no
+fi
+
+	if test "$tcl_ok" = "no"; then
+	    # Check a little harder for __pthread_mutex_init in the same
+	    # library, as some systems hide it there until pthread.h is
+	    # defined.  We could alternatively do an AC_TRY_COMPILE with
+	    # pthread.h, but that will work with libpthread really doesn't
+	    # exist, like AIX 4.2.  [Bug: 4359]
+	    echo "$as_me:$LINENO: checking for __pthread_mutex_init in -lpthread" >&5
+echo $ECHO_N "checking for __pthread_mutex_init in -lpthread... $ECHO_C" >&6
+if test "${ac_cv_lib_pthread___pthread_mutex_init+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lpthread  $LIBS"
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char __pthread_mutex_init ();
+int
+main ()
+{
+__pthread_mutex_init ();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_lib_pthread___pthread_mutex_init=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_lib_pthread___pthread_mutex_init=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+echo "$as_me:$LINENO: result: $ac_cv_lib_pthread___pthread_mutex_init" >&5
+echo "${ECHO_T}$ac_cv_lib_pthread___pthread_mutex_init" >&6
+if test $ac_cv_lib_pthread___pthread_mutex_init = yes; then
+  tcl_ok=yes
+else
+  tcl_ok=no
+fi
+
+	fi
+
+	if test "$tcl_ok" = "yes"; then
+	    # The space is needed
+	    THREADS_LIBS=" -lpthread"
+	else
+	    echo "$as_me:$LINENO: checking for pthread_mutex_init in -lpthreads" >&5
+echo $ECHO_N "checking for pthread_mutex_init in -lpthreads... $ECHO_C" >&6
+if test "${ac_cv_lib_pthreads_pthread_mutex_init+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lpthreads  $LIBS"
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char pthread_mutex_init ();
+int
+main ()
+{
+pthread_mutex_init ();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_lib_pthreads_pthread_mutex_init=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_lib_pthreads_pthread_mutex_init=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+echo "$as_me:$LINENO: result: $ac_cv_lib_pthreads_pthread_mutex_init" >&5
+echo "${ECHO_T}$ac_cv_lib_pthreads_pthread_mutex_init" >&6
+if test $ac_cv_lib_pthreads_pthread_mutex_init = yes; then
+  tcl_ok=yes
+else
+  tcl_ok=no
+fi
+
+	    if test "$tcl_ok" = "yes"; then
+		# The space is needed
+		THREADS_LIBS=" -lpthreads"
+	    else
+		echo "$as_me:$LINENO: checking for pthread_mutex_init in -lc" >&5
+echo $ECHO_N "checking for pthread_mutex_init in -lc... $ECHO_C" >&6
+if test "${ac_cv_lib_c_pthread_mutex_init+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lc  $LIBS"
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char pthread_mutex_init ();
+int
+main ()
+{
+pthread_mutex_init ();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_lib_c_pthread_mutex_init=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_lib_c_pthread_mutex_init=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+echo "$as_me:$LINENO: result: $ac_cv_lib_c_pthread_mutex_init" >&5
+echo "${ECHO_T}$ac_cv_lib_c_pthread_mutex_init" >&6
+if test $ac_cv_lib_c_pthread_mutex_init = yes; then
+  tcl_ok=yes
+else
+  tcl_ok=no
+fi
+
+		if test "$tcl_ok" = "no"; then
+		    echo "$as_me:$LINENO: checking for pthread_mutex_init in -lc_r" >&5
+echo $ECHO_N "checking for pthread_mutex_init in -lc_r... $ECHO_C" >&6
+if test "${ac_cv_lib_c_r_pthread_mutex_init+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lc_r  $LIBS"
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char pthread_mutex_init ();
+int
+main ()
+{
+pthread_mutex_init ();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_lib_c_r_pthread_mutex_init=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_lib_c_r_pthread_mutex_init=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+echo "$as_me:$LINENO: result: $ac_cv_lib_c_r_pthread_mutex_init" >&5
+echo "${ECHO_T}$ac_cv_lib_c_r_pthread_mutex_init" >&6
+if test $ac_cv_lib_c_r_pthread_mutex_init = yes; then
+  tcl_ok=yes
+else
+  tcl_ok=no
+fi
+
+		    if test "$tcl_ok" = "yes"; then
+			# The space is needed
+			THREADS_LIBS=" -pthread"
+		    else
+			TCL_THREADS=0
+			{ echo "$as_me:$LINENO: WARNING: Don't know how to find pthread lib on your system - you must disable thread support or edit the LIBS in the Makefile..." >&5
+echo "$as_me: WARNING: Don't know how to find pthread lib on your system - you must disable thread support or edit the LIBS in the Makefile..." >&2;}
+		    fi
+		fi
+	    fi
+	fi
+
+	# Does the pthread-implementation provide
+	# 'pthread_attr_setstacksize' ?
+
+	ac_saved_libs=$LIBS
+	LIBS="$LIBS $THREADS_LIBS"
+
+
+for ac_func in pthread_attr_setstacksize pthread_atfork
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); 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 $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+	LIBS=$ac_saved_libs
+    else
+	TCL_THREADS=0
+    fi
+    # Do checking message here to not mess up interleaved configure output
+    echo "$as_me:$LINENO: checking for building with threads" >&5
+echo $ECHO_N "checking for building with threads... $ECHO_C" >&6
+    if test "${TCL_THREADS}" = 1; then
+
+cat >>confdefs.h <<\_ACEOF
+#define TCL_THREADS 1
+_ACEOF
+
+	if test "${tcl_threaded_core}" = 1; then
+	    echo "$as_me:$LINENO: result: yes (threaded core)" >&5
+echo "${ECHO_T}yes (threaded core)" >&6
+	else
+	    echo "$as_me:$LINENO: result: yes" >&5
+echo "${ECHO_T}yes" >&6
+	fi
+    else
+	echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+    fi
+
+
+
+
+#------------------------------------------------------------------------
+# Embedded configuration information, encoding to use for the values, TIP #59
+#------------------------------------------------------------------------
+
+
+
+# Check whether --with-encoding or --without-encoding was given.
+if test "${with_encoding+set}" = set; then
+  withval="$with_encoding"
+  with_tcencoding=${withval}
+fi;
+
+    if test x"${with_tcencoding}" != x ; then
+
+cat >>confdefs.h <<_ACEOF
+#define TCL_CFGVAL_ENCODING "${with_tcencoding}"
+_ACEOF
+
+    else
+
+cat >>confdefs.h <<\_ACEOF
+#define TCL_CFGVAL_ENCODING "iso8859-1"
+_ACEOF
+
+    fi
+
+
+#--------------------------------------------------------------------
+# Look for libraries that we will need when compiling the Tcl shell
+#--------------------------------------------------------------------
+
+
+    #--------------------------------------------------------------------
+    # On a few very rare systems, all of the libm.a stuff is
+    # already in libc.a.  Set compiler flags accordingly.
+    #--------------------------------------------------------------------
+
+    echo "$as_me:$LINENO: checking for sin" >&5
+echo $ECHO_N "checking for sin... $ECHO_C" >&6
+if test "${ac_cv_func_sin+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define sin to an innocuous variant, in case <limits.h> declares sin.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define sin innocuous_sin
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char sin (); 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 sin
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char sin ();
+/* 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_sin) || defined (__stub___sin)
+choke me
+#else
+char (*f) () = sin;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != sin;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_func_sin=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_func_sin=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_func_sin" >&5
+echo "${ECHO_T}$ac_cv_func_sin" >&6
+if test $ac_cv_func_sin = yes; then
+  MATH_LIBS=""
+else
+  MATH_LIBS="-lm"
+fi
+
+
+    #--------------------------------------------------------------------
+    # Interactive UNIX requires -linet instead of -lsocket, plus it
+    # needs net/errno.h to define the socket-related error codes.
+    #--------------------------------------------------------------------
+
+    echo "$as_me:$LINENO: checking for main in -linet" >&5
+echo $ECHO_N "checking for main in -linet... $ECHO_C" >&6
+if test "${ac_cv_lib_inet_main+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-linet  $LIBS"
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+
+int
+main ()
+{
+main ();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_lib_inet_main=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_lib_inet_main=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+echo "$as_me:$LINENO: result: $ac_cv_lib_inet_main" >&5
+echo "${ECHO_T}$ac_cv_lib_inet_main" >&6
+if test $ac_cv_lib_inet_main = yes; then
+  LIBS="$LIBS -linet"
+fi
+
+    if test "${ac_cv_header_net_errno_h+set}" = set; then
+  echo "$as_me:$LINENO: checking for net/errno.h" >&5
+echo $ECHO_N "checking for net/errno.h... $ECHO_C" >&6
+if test "${ac_cv_header_net_errno_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_net_errno_h" >&5
+echo "${ECHO_T}$ac_cv_header_net_errno_h" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking net/errno.h usability" >&5
+echo $ECHO_N "checking net/errno.h usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <net/errno.h>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_header_compiler=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
+
+# Is the header present?
+echo "$as_me:$LINENO: checking net/errno.h presence" >&5
+echo $ECHO_N "checking net/errno.h presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <net/errno.h>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: net/errno.h: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: net/errno.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: net/errno.h: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: net/errno.h: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: net/errno.h: present but cannot be compiled" >&5
+echo "$as_me: WARNING: net/errno.h: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: net/errno.h:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: net/errno.h:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: net/errno.h: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: net/errno.h: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: net/errno.h:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: net/errno.h:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: net/errno.h: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: net/errno.h: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: net/errno.h: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: net/errno.h: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ------------------------------ ##
+## Report this to the tcl lists.  ##
+## ------------------------------ ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for net/errno.h" >&5
+echo $ECHO_N "checking for net/errno.h... $ECHO_C" >&6
+if test "${ac_cv_header_net_errno_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_cv_header_net_errno_h=$ac_header_preproc
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_net_errno_h" >&5
+echo "${ECHO_T}$ac_cv_header_net_errno_h" >&6
+
+fi
+if test $ac_cv_header_net_errno_h = yes; then
+
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_NET_ERRNO_H 1
+_ACEOF
+
+fi
+
+
+
+    #--------------------------------------------------------------------
+    #	Check for the existence of the -lsocket and -lnsl libraries.
+    #	The order here is important, so that they end up in the right
+    #	order in the command line generated by make.  Here are some
+    #	special considerations:
+    #	1. Use "connect" and "accept" to check for -lsocket, and
+    #	   "gethostbyname" to check for -lnsl.
+    #	2. Use each function name only once:  can't redo a check because
+    #	   autoconf caches the results of the last check and won't redo it.
+    #	3. Use -lnsl and -lsocket only if they supply procedures that
+    #	   aren't already present in the normal libraries.  This is because
+    #	   IRIX 5.2 has libraries, but they aren't needed and they're
+    #	   bogus:  they goof up name resolution if used.
+    #	4. On some SVR4 systems, can't use -lsocket without -lnsl too.
+    #	   To get around this problem, check for both libraries together
+    #	   if -lsocket doesn't work by itself.
+    #--------------------------------------------------------------------
+
+    tcl_checkBoth=0
+    echo "$as_me:$LINENO: checking for connect" >&5
+echo $ECHO_N "checking for connect... $ECHO_C" >&6
+if test "${ac_cv_func_connect+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define connect to an innocuous variant, in case <limits.h> declares connect.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define connect innocuous_connect
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char connect (); 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 connect
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char connect ();
+/* 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_connect) || defined (__stub___connect)
+choke me
+#else
+char (*f) () = connect;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != connect;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_func_connect=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_func_connect=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_func_connect" >&5
+echo "${ECHO_T}$ac_cv_func_connect" >&6
+if test $ac_cv_func_connect = yes; then
+  tcl_checkSocket=0
+else
+  tcl_checkSocket=1
+fi
+
+    if test "$tcl_checkSocket" = 1; then
+	echo "$as_me:$LINENO: checking for setsockopt" >&5
+echo $ECHO_N "checking for setsockopt... $ECHO_C" >&6
+if test "${ac_cv_func_setsockopt+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define setsockopt to an innocuous variant, in case <limits.h> declares setsockopt.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define setsockopt innocuous_setsockopt
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char setsockopt (); 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 setsockopt
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char setsockopt ();
+/* 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_setsockopt) || defined (__stub___setsockopt)
+choke me
+#else
+char (*f) () = setsockopt;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != setsockopt;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_func_setsockopt=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_func_setsockopt=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_func_setsockopt" >&5
+echo "${ECHO_T}$ac_cv_func_setsockopt" >&6
+if test $ac_cv_func_setsockopt = yes; then
+  :
+else
+  echo "$as_me:$LINENO: checking for setsockopt in -lsocket" >&5
+echo $ECHO_N "checking for setsockopt in -lsocket... $ECHO_C" >&6
+if test "${ac_cv_lib_socket_setsockopt+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lsocket  $LIBS"
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char setsockopt ();
+int
+main ()
+{
+setsockopt ();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_lib_socket_setsockopt=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_lib_socket_setsockopt=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+echo "$as_me:$LINENO: result: $ac_cv_lib_socket_setsockopt" >&5
+echo "${ECHO_T}$ac_cv_lib_socket_setsockopt" >&6
+if test $ac_cv_lib_socket_setsockopt = yes; then
+  LIBS="$LIBS -lsocket"
+else
+  tcl_checkBoth=1
+fi
+
+fi
+
+    fi
+    if test "$tcl_checkBoth" = 1; then
+	tk_oldLibs=$LIBS
+	LIBS="$LIBS -lsocket -lnsl"
+	echo "$as_me:$LINENO: checking for accept" >&5
+echo $ECHO_N "checking for accept... $ECHO_C" >&6
+if test "${ac_cv_func_accept+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define accept to an innocuous variant, in case <limits.h> declares accept.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define accept innocuous_accept
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char accept (); 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 accept
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char accept ();
+/* 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_accept) || defined (__stub___accept)
+choke me
+#else
+char (*f) () = accept;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != accept;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_func_accept=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_func_accept=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_func_accept" >&5
+echo "${ECHO_T}$ac_cv_func_accept" >&6
+if test $ac_cv_func_accept = yes; then
+  tcl_checkNsl=0
+else
+  LIBS=$tk_oldLibs
+fi
+
+    fi
+    echo "$as_me:$LINENO: checking for gethostbyname" >&5
+echo $ECHO_N "checking for gethostbyname... $ECHO_C" >&6
+if test "${ac_cv_func_gethostbyname+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define gethostbyname to an innocuous variant, in case <limits.h> declares gethostbyname.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define gethostbyname innocuous_gethostbyname
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char gethostbyname (); 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 gethostbyname
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char gethostbyname ();
+/* 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_gethostbyname) || defined (__stub___gethostbyname)
+choke me
+#else
+char (*f) () = gethostbyname;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != gethostbyname;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_func_gethostbyname=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_func_gethostbyname=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_func_gethostbyname" >&5
+echo "${ECHO_T}$ac_cv_func_gethostbyname" >&6
+if test $ac_cv_func_gethostbyname = yes; then
+  :
+else
+  echo "$as_me:$LINENO: checking for gethostbyname in -lnsl" >&5
+echo $ECHO_N "checking for gethostbyname in -lnsl... $ECHO_C" >&6
+if test "${ac_cv_lib_nsl_gethostbyname+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lnsl  $LIBS"
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char gethostbyname ();
+int
+main ()
+{
+gethostbyname ();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_lib_nsl_gethostbyname=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_lib_nsl_gethostbyname=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+echo "$as_me:$LINENO: result: $ac_cv_lib_nsl_gethostbyname" >&5
+echo "${ECHO_T}$ac_cv_lib_nsl_gethostbyname" >&6
+if test $ac_cv_lib_nsl_gethostbyname = yes; then
+  LIBS="$LIBS -lnsl"
+fi
+
+fi
+
+
+
+# Add the threads support libraries
+LIBS="$LIBS$THREADS_LIBS"
+
+
+    echo "$as_me:$LINENO: checking how to build libraries" >&5
+echo $ECHO_N "checking how to build libraries... $ECHO_C" >&6
+    # Check whether --enable-shared or --disable-shared was given.
+if test "${enable_shared+set}" = set; then
+  enableval="$enable_shared"
+  tcl_ok=$enableval
+else
+  tcl_ok=yes
+fi;
+
+    if test "${enable_shared+set}" = set; then
+	enableval="$enable_shared"
+	tcl_ok=$enableval
+    else
+	tcl_ok=yes
+    fi
+
+    if test "$tcl_ok" = "yes" ; then
+	echo "$as_me:$LINENO: result: shared" >&5
+echo "${ECHO_T}shared" >&6
+	SHARED_BUILD=1
+    else
+	echo "$as_me:$LINENO: result: static" >&5
+echo "${ECHO_T}static" >&6
+	SHARED_BUILD=0
+
+cat >>confdefs.h <<\_ACEOF
+#define STATIC_BUILD 1
+_ACEOF
+
+    fi
+
+
+#--------------------------------------------------------------------
+# Look for a native installed tclsh binary (if available)
+# If one cannot be found then use the binary we build (fails for
+# cross compiling). This is used for NATIVE_TCLSH in Makefile.
+#--------------------------------------------------------------------
+
+
+    echo "$as_me:$LINENO: checking for tclsh" >&5
+echo $ECHO_N "checking for tclsh... $ECHO_C" >&6
+    if test "${ac_cv_path_tclsh+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+	search_path=`echo ${PATH} | sed -e 's/:/ /g'`
+	for dir in $search_path ; do
+	    for j in `ls -r $dir/tclsh[8-9]* 2> /dev/null` \
+		    `ls -r $dir/tclsh* 2> /dev/null` ; do
+		if test x"$ac_cv_path_tclsh" = x ; then
+		    if test -f "$j" ; then
+			ac_cv_path_tclsh=$j
+			break
+		    fi
+		fi
+	    done
+	done
+
+fi
+
+
+    if test -f "$ac_cv_path_tclsh" ; then
+	TCLSH_PROG="$ac_cv_path_tclsh"
+	echo "$as_me:$LINENO: result: $TCLSH_PROG" >&5
+echo "${ECHO_T}$TCLSH_PROG" >&6
+    else
+	# It is not an error if an installed version of Tcl can't be located.
+	TCLSH_PROG=""
+	echo "$as_me:$LINENO: result: No tclsh found on PATH" >&5
+echo "${ECHO_T}No tclsh found on PATH" >&6
+    fi
+
+
+if test "$TCLSH_PROG" = ""; then
+  TCLSH_PROG='./${TCL_EXE}'
+fi
+
+#------------------------------------------------------------------------
+#	Add stuff for zlib
+#------------------------------------------------------------------------
+
+zlib_ok=yes
+if test "${ac_cv_header_zlib_h+set}" = set; then
+  echo "$as_me:$LINENO: checking for zlib.h" >&5
+echo $ECHO_N "checking for zlib.h... $ECHO_C" >&6
+if test "${ac_cv_header_zlib_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_zlib_h" >&5
+echo "${ECHO_T}$ac_cv_header_zlib_h" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking zlib.h usability" >&5
+echo $ECHO_N "checking zlib.h usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <zlib.h>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_header_compiler=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
+
+# Is the header present?
+echo "$as_me:$LINENO: checking zlib.h presence" >&5
+echo $ECHO_N "checking zlib.h presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <zlib.h>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: zlib.h: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: zlib.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: zlib.h: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: zlib.h: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: zlib.h: present but cannot be compiled" >&5
+echo "$as_me: WARNING: zlib.h: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: zlib.h:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: zlib.h:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: zlib.h: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: zlib.h: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: zlib.h:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: zlib.h:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: zlib.h: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: zlib.h: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: zlib.h: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: zlib.h: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ------------------------------ ##
+## Report this to the tcl lists.  ##
+## ------------------------------ ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for zlib.h" >&5
+echo $ECHO_N "checking for zlib.h... $ECHO_C" >&6
+if test "${ac_cv_header_zlib_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_cv_header_zlib_h=$ac_header_preproc
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_zlib_h" >&5
+echo "${ECHO_T}$ac_cv_header_zlib_h" >&6
+
+fi
+if test $ac_cv_header_zlib_h = yes; then
+
+  echo "$as_me:$LINENO: checking for gz_header" >&5
+echo $ECHO_N "checking for gz_header... $ECHO_C" >&6
+if test "${ac_cv_type_gz_header+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <zlib.h>
+
+int
+main ()
+{
+if ((gz_header *) 0)
+  return 0;
+if (sizeof (gz_header))
+  return 0;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_type_gz_header=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_type_gz_header=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_type_gz_header" >&5
+echo "${ECHO_T}$ac_cv_type_gz_header" >&6
+if test $ac_cv_type_gz_header = yes; then
+  :
+else
+  zlib_ok=no
+fi
+
+else
+
+  zlib_ok=no
+fi
+
+
+if test $zlib_ok = yes; then
+
+  echo "$as_me:$LINENO: checking for library containing deflateSetHeader" >&5
+echo $ECHO_N "checking for library containing deflateSetHeader... $ECHO_C" >&6
+if test "${ac_cv_search_deflateSetHeader+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_func_search_save_LIBS=$LIBS
+ac_cv_search_deflateSetHeader=no
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char deflateSetHeader ();
+int
+main ()
+{
+deflateSetHeader ();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_search_deflateSetHeader="none required"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+if test "$ac_cv_search_deflateSetHeader" = no; then
+  for ac_lib in z; do
+    LIBS="-l$ac_lib  $ac_func_search_save_LIBS"
+    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char deflateSetHeader ();
+int
+main ()
+{
+deflateSetHeader ();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_search_deflateSetHeader="-l$ac_lib"
+break
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+  done
+fi
+LIBS=$ac_func_search_save_LIBS
+fi
+echo "$as_me:$LINENO: result: $ac_cv_search_deflateSetHeader" >&5
+echo "${ECHO_T}$ac_cv_search_deflateSetHeader" >&6
+if test "$ac_cv_search_deflateSetHeader" != no; then
+  test "$ac_cv_search_deflateSetHeader" = "none required" || LIBS="$ac_cv_search_deflateSetHeader $LIBS"
+
+else
+
+    zlib_ok=no
+
+fi
+
+fi
+
+if test $zlib_ok = no; then
+
+  ZLIB_OBJS=\${ZLIB_OBJS}
+
+  ZLIB_SRCS=\${ZLIB_SRCS}
+
+  ZLIB_INCLUDE=-I\${ZLIB_DIR}
+
+
+fi
+
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_ZLIB 1
+_ACEOF
+
+
+#--------------------------------------------------------------------
+# The statements below define a collection of compile flags.  This
+# macro depends on the value of SHARED_BUILD, and should be called
+# after SC_ENABLE_SHARED checks the configure switches.
+#--------------------------------------------------------------------
+
+if test -n "$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=$2
+echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
+if test "${ac_cv_prog_RANLIB+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test -n "$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 $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_RANLIB="${ac_tool_prefix}ranlib"
+    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+done
+
+fi
+fi
+RANLIB=$ac_cv_prog_RANLIB
+if test -n "$RANLIB"; then
+  echo "$as_me:$LINENO: result: $RANLIB" >&5
+echo "${ECHO_T}$RANLIB" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}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=$2
+echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
+if test "${ac_cv_prog_ac_ct_RANLIB+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test -n "$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 $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_RANLIB="ranlib"
+    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+done
+
+  test -z "$ac_cv_prog_ac_ct_RANLIB" && ac_cv_prog_ac_ct_RANLIB=":"
+fi
+fi
+ac_ct_RANLIB=$ac_cv_prog_ac_ct_RANLIB
+if test -n "$ac_ct_RANLIB"; then
+  echo "$as_me:$LINENO: result: $ac_ct_RANLIB" >&5
+echo "${ECHO_T}$ac_ct_RANLIB" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+
+  RANLIB=$ac_ct_RANLIB
+else
+  RANLIB="$ac_cv_prog_RANLIB"
+fi
+
+
+
+    # Step 0.a: Enable 64 bit support?
+
+    echo "$as_me:$LINENO: checking if 64bit support is requested" >&5
+echo $ECHO_N "checking if 64bit support is requested... $ECHO_C" >&6
+    # Check whether --enable-64bit or --disable-64bit was given.
+if test "${enable_64bit+set}" = set; then
+  enableval="$enable_64bit"
+  do64bit=$enableval
+else
+  do64bit=no
+fi;
+    echo "$as_me:$LINENO: result: $do64bit" >&5
+echo "${ECHO_T}$do64bit" >&6
+
+    # Step 0.b: Enable Solaris 64 bit VIS support?
+
+    echo "$as_me:$LINENO: checking if 64bit Sparc VIS support is requested" >&5
+echo $ECHO_N "checking if 64bit Sparc VIS support is requested... $ECHO_C" >&6
+    # Check whether --enable-64bit-vis or --disable-64bit-vis was given.
+if test "${enable_64bit_vis+set}" = set; then
+  enableval="$enable_64bit_vis"
+  do64bitVIS=$enableval
+else
+  do64bitVIS=no
+fi;
+    echo "$as_me:$LINENO: result: $do64bitVIS" >&5
+echo "${ECHO_T}$do64bitVIS" >&6
+    # Force 64bit on with VIS
+    if test "$do64bitVIS" = "yes"; then
+  do64bit=yes
+fi
+
+
+    # Step 0.c: Check if visibility support is available. Do this here so
+    # that platform specific alternatives can be used below if this fails.
+
+    echo "$as_me:$LINENO: checking if compiler supports visibility \"hidden\"" >&5
+echo $ECHO_N "checking if compiler supports visibility \"hidden\"... $ECHO_C" >&6
+if test "${tcl_cv_cc_visibility_hidden+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -Werror"
+	cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+	    extern __attribute__((__visibility__("hidden"))) void f(void);
+	    void f(void) {}
+int
+main ()
+{
+f();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_cv_cc_visibility_hidden=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+tcl_cv_cc_visibility_hidden=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+	CFLAGS=$hold_cflags
+fi
+echo "$as_me:$LINENO: result: $tcl_cv_cc_visibility_hidden" >&5
+echo "${ECHO_T}$tcl_cv_cc_visibility_hidden" >&6
+    if test $tcl_cv_cc_visibility_hidden = yes; then
+
+
+cat >>confdefs.h <<\_ACEOF
+#define MODULE_SCOPE extern __attribute__((__visibility__("hidden")))
+_ACEOF
+
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_HIDDEN 1
+_ACEOF
+
+
+fi
+
+
+    # Step 0.d: Disable -rpath support?
+
+    echo "$as_me:$LINENO: checking if rpath support is requested" >&5
+echo $ECHO_N "checking if rpath support is requested... $ECHO_C" >&6
+    # Check whether --enable-rpath or --disable-rpath was given.
+if test "${enable_rpath+set}" = set; then
+  enableval="$enable_rpath"
+  doRpath=$enableval
+else
+  doRpath=yes
+fi;
+    echo "$as_me:$LINENO: result: $doRpath" >&5
+echo "${ECHO_T}$doRpath" >&6
+
+    # Step 1: set the variable "system" to hold the name and version number
+    # for the system.
+
+
+    echo "$as_me:$LINENO: checking system version" >&5
+echo $ECHO_N "checking system version... $ECHO_C" >&6
+if test "${tcl_cv_sys_version+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+	if test -f /usr/lib/NextStep/software_version; then
+	    tcl_cv_sys_version=NEXTSTEP-`awk '/3/,/3/' /usr/lib/NextStep/software_version`
+	else
+	    tcl_cv_sys_version=`uname -s`-`uname -r`
+	    if test "$?" -ne 0 ; then
+		{ echo "$as_me:$LINENO: WARNING: can't find uname command" >&5
+echo "$as_me: WARNING: can't find uname command" >&2;}
+		tcl_cv_sys_version=unknown
+	    else
+		# Special check for weird MP-RAS system (uname returns weird
+		# results, and the version is kept in special file).
+
+		if test -r /etc/.relid -a "X`uname -n`" = "X`uname -s`" ; then
+		    tcl_cv_sys_version=MP-RAS-`awk '{print $3}' /etc/.relid`
+		fi
+		if test "`uname -s`" = "AIX" ; then
+		    tcl_cv_sys_version=AIX-`uname -v`.`uname -r`
+		fi
+	    fi
+	fi
+
+fi
+echo "$as_me:$LINENO: result: $tcl_cv_sys_version" >&5
+echo "${ECHO_T}$tcl_cv_sys_version" >&6
+    system=$tcl_cv_sys_version
+
+
+    # Step 2: check for existence of -ldl library.  This is needed because
+    # Linux can use either -ldl or -ldld for dynamic loading.
+
+    echo "$as_me:$LINENO: checking for dlopen in -ldl" >&5
+echo $ECHO_N "checking for dlopen in -ldl... $ECHO_C" >&6
+if test "${ac_cv_lib_dl_dlopen+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-ldl  $LIBS"
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char dlopen ();
+int
+main ()
+{
+dlopen ();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_lib_dl_dlopen=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_lib_dl_dlopen=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+echo "$as_me:$LINENO: result: $ac_cv_lib_dl_dlopen" >&5
+echo "${ECHO_T}$ac_cv_lib_dl_dlopen" >&6
+if test $ac_cv_lib_dl_dlopen = yes; then
+  have_dl=yes
+else
+  have_dl=no
+fi
+
+
+    # Require ranlib early so we can override it in special cases below.
+
+
+
+    # Step 3: set configuration options based on system name and version.
+
+    do64bit_ok=no
+    # default to '{$LIBS}' and set to "" on per-platform necessary basis
+    SHLIB_LD_LIBS='${LIBS}'
+    LDFLAGS_ORIG="$LDFLAGS"
+    # When ld needs options to work in 64-bit mode, put them in
+    # LDFLAGS_ARCH so they eventually end up in LDFLAGS even if [load]
+    # is disabled by the user. [Bug 1016796]
+    LDFLAGS_ARCH=""
+    UNSHARED_LIB_SUFFIX=""
+    TCL_TRIM_DOTS='`echo ${VERSION} | tr -d .`'
+    ECHO_VERSION='`echo ${VERSION}`'
+    TCL_LIB_VERSIONS_OK=ok
+    CFLAGS_DEBUG=-g
+    if test "$GCC" = yes; then
+
+	CFLAGS_OPTIMIZE=-O2
+	CFLAGS_WARNING="-Wall"
+
+else
+
+	CFLAGS_OPTIMIZE=-O
+	CFLAGS_WARNING=""
+
+fi
+
+    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=$2
+echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
+if test "${ac_cv_prog_AR+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test -n "$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 $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_AR="${ac_tool_prefix}ar"
+    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+done
+
+fi
+fi
+AR=$ac_cv_prog_AR
+if test -n "$AR"; then
+  echo "$as_me:$LINENO: result: $AR" >&5
+echo "${ECHO_T}$AR" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}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=$2
+echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
+if test "${ac_cv_prog_ac_ct_AR+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test -n "$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 $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_AR="ar"
+    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+done
+
+fi
+fi
+ac_ct_AR=$ac_cv_prog_ac_ct_AR
+if test -n "$ac_ct_AR"; then
+  echo "$as_me:$LINENO: result: $ac_ct_AR" >&5
+echo "${ECHO_T}$ac_ct_AR" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+
+  AR=$ac_ct_AR
+else
+  AR="$ac_cv_prog_AR"
+fi
+
+    STLIB_LD='${AR} cr'
+    LD_LIBRARY_PATH_VAR="LD_LIBRARY_PATH"
+    PLAT_OBJS=""
+    PLAT_SRCS=""
+    LDAIX_SRC=""
+    if test "x${SHLIB_VERSION}" = x; then
+  SHLIB_VERSION=".1.0"
+else
+  SHLIB_VERSION=".${SHLIB_VERSION}"
+fi
+
+    case $system in
+	AIX-*)
+	    if test "${TCL_THREADS}" = "1" -a "$GCC" != "yes"; then
+
+		# AIX requires the _r compiler when gcc isn't being used
+		case "${CC}" in
+		    *_r|*_r\ *)
+			# ok ...
+			;;
+		    *)
+			# Make sure only first arg gets _r
+		    	CC=`echo "$CC" | sed -e 's/^\([^ ]*\)/\1_r/'`
+			;;
+		esac
+		echo "$as_me:$LINENO: result: Using $CC for compiling with threads" >&5
+echo "${ECHO_T}Using $CC for compiling with threads" >&6
+
+fi
+
+	    LIBS="$LIBS -lc"
+	    SHLIB_CFLAGS=""
+	    SHLIB_SUFFIX=".so"
+
+	    DL_OBJS="tclLoadDl.o"
+	    LD_LIBRARY_PATH_VAR="LIBPATH"
+
+	    # ldAix No longer needed with use of -bexpall/-brtl
+	    # but some extensions may still reference it
+	    LDAIX_SRC='$(UNIX_DIR)/ldAix'
+
+	    # Check to enable 64-bit flags for compiler/linker
+	    if test "$do64bit" = yes; then
+
+		if test "$GCC" = yes; then
+
+		    { echo "$as_me:$LINENO: WARNING: 64bit mode not supported with GCC on $system" >&5
+echo "$as_me: WARNING: 64bit mode not supported with GCC on $system" >&2;}
+
+else
+
+		    do64bit_ok=yes
+		    CFLAGS="$CFLAGS -q64"
+		    LDFLAGS_ARCH="-q64"
+		    RANLIB="${RANLIB} -X64"
+		    AR="${AR} -X64"
+		    SHLIB_LD_FLAGS="-b64"
+
+fi
+
+
+fi
+
+
+	    if test "`uname -m`" = ia64; then
+
+		# AIX-5 uses ELF style dynamic libraries on IA-64, but not PPC
+		SHLIB_LD="/usr/ccs/bin/ld -G -z text"
+		# AIX-5 has dl* in libc.so
+		DL_LIBS=""
+		if test "$GCC" = yes; then
+
+		    CC_SEARCH_FLAGS='-Wl,-R,${LIB_RUNTIME_DIR}'
+
+else
+
+		    CC_SEARCH_FLAGS='-R${LIB_RUNTIME_DIR}'
+
+fi
+
+		LD_SEARCH_FLAGS='-R ${LIB_RUNTIME_DIR}'
+
+else
+
+		if test "$GCC" = yes; then
+
+		    SHLIB_LD='${CC} -shared -Wl,-bexpall'
+
+else
+
+		    SHLIB_LD="/bin/ld -bhalt:4 -bM:SRE -bexpall -H512 -T512 -bnoentry"
+		    LDFLAGS="$LDFLAGS -brtl"
+
+fi
+
+		SHLIB_LD="${SHLIB_LD} ${SHLIB_LD_FLAGS}"
+		DL_LIBS="-ldl"
+		CC_SEARCH_FLAGS='-L${LIB_RUNTIME_DIR}'
+		LD_SEARCH_FLAGS=${CC_SEARCH_FLAGS}
+
+fi
+
+	    ;;
+	BeOS*)
+	    SHLIB_CFLAGS="-fPIC"
+	    SHLIB_LD='${CC} -nostart'
+	    SHLIB_SUFFIX=".so"
+	    DL_OBJS="tclLoadDl.o"
+	    DL_LIBS="-ldl"
+
+	    #-----------------------------------------------------------
+	    # Check for inet_ntoa in -lbind, for BeOS (which also needs
+	    # -lsocket, even if the network functions are in -lnet which
+	    # is always linked to, for compatibility.
+	    #-----------------------------------------------------------
+	    echo "$as_me:$LINENO: checking for inet_ntoa in -lbind" >&5
+echo $ECHO_N "checking for inet_ntoa in -lbind... $ECHO_C" >&6
+if test "${ac_cv_lib_bind_inet_ntoa+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lbind  $LIBS"
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char inet_ntoa ();
+int
+main ()
+{
+inet_ntoa ();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_lib_bind_inet_ntoa=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_lib_bind_inet_ntoa=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+echo "$as_me:$LINENO: result: $ac_cv_lib_bind_inet_ntoa" >&5
+echo "${ECHO_T}$ac_cv_lib_bind_inet_ntoa" >&6
+if test $ac_cv_lib_bind_inet_ntoa = yes; then
+  LIBS="$LIBS -lbind -lsocket"
+fi
+
+	    ;;
+	BSD/OS-2.1*|BSD/OS-3*)
+	    SHLIB_CFLAGS=""
+	    SHLIB_LD="shlicc -r"
+	    SHLIB_SUFFIX=".so"
+	    DL_OBJS="tclLoadDl.o"
+	    DL_LIBS="-ldl"
+	    CC_SEARCH_FLAGS=""
+	    LD_SEARCH_FLAGS=""
+	    ;;
+	BSD/OS-4.*)
+	    SHLIB_CFLAGS="-export-dynamic -fPIC"
+	    SHLIB_LD='${CC} -shared'
+	    SHLIB_SUFFIX=".so"
+	    DL_OBJS="tclLoadDl.o"
+	    DL_LIBS="-ldl"
+	    LDFLAGS="$LDFLAGS -export-dynamic"
+	    CC_SEARCH_FLAGS=""
+	    LD_SEARCH_FLAGS=""
+	    ;;
+	CYGWIN_*|MINGW32*)
+	    SHLIB_CFLAGS=""
+	    SHLIB_LD='${CC} -shared'
+	    SHLIB_SUFFIX=".dll"
+	    DL_OBJS="tclLoadDl.o"
+	    PLAT_OBJS='${CYGWIN_OBJS}'
+	    PLAT_SRCS='${CYGWIN_SRCS}'
+	    DL_LIBS="-ldl"
+	    CC_SEARCH_FLAGS=""
+	    LD_SEARCH_FLAGS=""
+	    TCL_NEEDS_EXP_FILE=1
+	    TCL_EXPORT_FILE_SUFFIX='${VERSION}\$\{DBGX\}.dll.a'
+	    SHLIB_LD_LIBS="${SHLIB_LD_LIBS} -Wl,--out-implib,\$@.a"
+	    echo "$as_me:$LINENO: checking for Cygwin version of gcc" >&5
+echo $ECHO_N "checking for Cygwin version of gcc... $ECHO_C" >&6
+if test "${ac_cv_cygwin+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+		#ifdef __CYGWIN__
+		    #error cygwin
+		#endif
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_cygwin=no
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_cygwin=yes
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+
+fi
+echo "$as_me:$LINENO: result: $ac_cv_cygwin" >&5
+echo "${ECHO_T}$ac_cv_cygwin" >&6
+	    if test "$ac_cv_cygwin" = "no"; then
+		{ { echo "$as_me:$LINENO: error: ${CC} is not a cygwin compiler." >&5
+echo "$as_me: error: ${CC} is not a cygwin compiler." >&2;}
+   { (exit 1); exit 1; }; }
+	    fi
+	    if test "x${TCL_THREADS}" = "x0"; then
+		{ { echo "$as_me:$LINENO: error: CYGWIN compile is only supported with --enable-threads" >&5
+echo "$as_me: error: CYGWIN compile is only supported with --enable-threads" >&2;}
+   { (exit 1); exit 1; }; }
+	    fi
+	    do64bit_ok=yes
+	    if test "x${SHARED_BUILD}" = "x1"; then
+		echo "running cd ../win; ${CONFIG_SHELL-/bin/sh} ./configure $ac_configure_args"
+		# The eval makes quoting arguments work.
+		if cd ../win; eval ${CONFIG_SHELL-/bin/sh} ./configure $ac_configure_args; cd ../unix
+		then :
+		else
+		    { echo "configure: error: configure failed for ../win" 1>&2; exit 1; }
+		fi
+	    fi
+	    ;;
+	dgux*)
+	    SHLIB_CFLAGS="-K PIC"
+	    SHLIB_LD='${CC} -G'
+	    SHLIB_LD_LIBS=""
+	    SHLIB_SUFFIX=".so"
+	    DL_OBJS="tclLoadDl.o"
+	    DL_LIBS="-ldl"
+	    CC_SEARCH_FLAGS=""
+	    LD_SEARCH_FLAGS=""
+	    ;;
+	Haiku*)
+	    LDFLAGS="$LDFLAGS -Wl,--export-dynamic"
+	    SHLIB_CFLAGS="-fPIC"
+	    SHLIB_SUFFIX=".so"
+	    SHLIB_LD='${CC} ${CFLAGS} ${LDFLAGS} -shared'
+	    DL_OBJS="tclLoadDl.o"
+	    DL_LIBS="-lroot"
+	    echo "$as_me:$LINENO: checking for inet_ntoa in -lnetwork" >&5
+echo $ECHO_N "checking for inet_ntoa in -lnetwork... $ECHO_C" >&6
+if test "${ac_cv_lib_network_inet_ntoa+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lnetwork  $LIBS"
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char inet_ntoa ();
+int
+main ()
+{
+inet_ntoa ();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_lib_network_inet_ntoa=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_lib_network_inet_ntoa=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+echo "$as_me:$LINENO: result: $ac_cv_lib_network_inet_ntoa" >&5
+echo "${ECHO_T}$ac_cv_lib_network_inet_ntoa" >&6
+if test $ac_cv_lib_network_inet_ntoa = yes; then
+  LIBS="$LIBS -lnetwork"
+fi
+
+	    ;;
+	HP-UX-*.11.*)
+	    # Use updated header definitions where possible
+
+cat >>confdefs.h <<\_ACEOF
+#define _XOPEN_SOURCE_EXTENDED 1
+_ACEOF
+
+
+cat >>confdefs.h <<\_ACEOF
+#define _XOPEN_SOURCE 1
+_ACEOF
+
+	    LIBS="$LIBS -lxnet"               # Use the XOPEN network library
+
+	    if test "`uname -m`" = ia64; then
+
+		SHLIB_SUFFIX=".so"
+
+else
+
+		SHLIB_SUFFIX=".sl"
+
+fi
+
+	    echo "$as_me:$LINENO: checking for shl_load in -ldld" >&5
+echo $ECHO_N "checking for shl_load in -ldld... $ECHO_C" >&6
+if test "${ac_cv_lib_dld_shl_load+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-ldld  $LIBS"
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char shl_load ();
+int
+main ()
+{
+shl_load ();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_lib_dld_shl_load=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_lib_dld_shl_load=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+echo "$as_me:$LINENO: result: $ac_cv_lib_dld_shl_load" >&5
+echo "${ECHO_T}$ac_cv_lib_dld_shl_load" >&6
+if test $ac_cv_lib_dld_shl_load = yes; then
+  tcl_ok=yes
+else
+  tcl_ok=no
+fi
+
+	    if test "$tcl_ok" = yes; then
+
+		SHLIB_CFLAGS="+z"
+		SHLIB_LD="ld -b"
+		DL_OBJS="tclLoadShl.o"
+		DL_LIBS="-ldld"
+		LDFLAGS="$LDFLAGS -Wl,-E"
+		CC_SEARCH_FLAGS='-Wl,+s,+b,${LIB_RUNTIME_DIR}:.'
+		LD_SEARCH_FLAGS='+s +b ${LIB_RUNTIME_DIR}:.'
+		LD_LIBRARY_PATH_VAR="SHLIB_PATH"
+
+fi
+
+	    if test "$GCC" = yes; then
+
+		SHLIB_LD='${CC} -shared'
+		LD_SEARCH_FLAGS=${CC_SEARCH_FLAGS}
+
+else
+
+		CFLAGS="$CFLAGS -z"
+
+fi
+
+
+	    # Users may want PA-RISC 1.1/2.0 portable code - needs HP cc
+	    #CFLAGS="$CFLAGS +DAportable"
+
+	    # Check to enable 64-bit flags for compiler/linker
+	    if test "$do64bit" = "yes"; then
+
+		if test "$GCC" = yes; then
+
+		    case `${CC} -dumpmachine` in
+			hppa64*)
+			    # 64-bit gcc in use.  Fix flags for GNU ld.
+			    do64bit_ok=yes
+			    SHLIB_LD='${CC} -shared'
+			    if test $doRpath = yes; then
+
+				CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
+fi
+
+			    LD_SEARCH_FLAGS=${CC_SEARCH_FLAGS}
+			    ;;
+			*)
+			    { echo "$as_me:$LINENO: WARNING: 64bit mode not supported with GCC on $system" >&5
+echo "$as_me: WARNING: 64bit mode not supported with GCC on $system" >&2;}
+			    ;;
+		    esac
+
+else
+
+		    do64bit_ok=yes
+		    CFLAGS="$CFLAGS +DD64"
+		    LDFLAGS_ARCH="+DD64"
+
+fi
+
+
+fi
+ ;;
+	HP-UX-*.08.*|HP-UX-*.09.*|HP-UX-*.10.*)
+	    SHLIB_SUFFIX=".sl"
+	    echo "$as_me:$LINENO: checking for shl_load in -ldld" >&5
+echo $ECHO_N "checking for shl_load in -ldld... $ECHO_C" >&6
+if test "${ac_cv_lib_dld_shl_load+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-ldld  $LIBS"
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char shl_load ();
+int
+main ()
+{
+shl_load ();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_lib_dld_shl_load=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_lib_dld_shl_load=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+echo "$as_me:$LINENO: result: $ac_cv_lib_dld_shl_load" >&5
+echo "${ECHO_T}$ac_cv_lib_dld_shl_load" >&6
+if test $ac_cv_lib_dld_shl_load = yes; then
+  tcl_ok=yes
+else
+  tcl_ok=no
+fi
+
+	    if test "$tcl_ok" = yes; then
+
+		SHLIB_CFLAGS="+z"
+		SHLIB_LD="ld -b"
+		SHLIB_LD_LIBS=""
+		DL_OBJS="tclLoadShl.o"
+		DL_LIBS="-ldld"
+		LDFLAGS="$LDFLAGS -Wl,-E"
+		CC_SEARCH_FLAGS='-Wl,+s,+b,${LIB_RUNTIME_DIR}:.'
+		LD_SEARCH_FLAGS='+s +b ${LIB_RUNTIME_DIR}:.'
+		LD_LIBRARY_PATH_VAR="SHLIB_PATH"
+
+fi
+ ;;
+	IRIX-5.*)
+	    SHLIB_CFLAGS=""
+	    SHLIB_LD="ld -shared -rdata_shared"
+	    SHLIB_SUFFIX=".so"
+	    DL_OBJS="tclLoadDl.o"
+	    DL_LIBS=""
+	    case $LIBOBJS in
+    "mkstemp.$ac_objext"   | \
+  *" mkstemp.$ac_objext"   | \
+    "mkstemp.$ac_objext "* | \
+  *" mkstemp.$ac_objext "* ) ;;
+  *) LIBOBJS="$LIBOBJS mkstemp.$ac_objext" ;;
+esac
+
+	    if test $doRpath = yes; then
+
+		CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
+		LD_SEARCH_FLAGS='-rpath ${LIB_RUNTIME_DIR}'
+fi
+
+	    ;;
+	IRIX-6.*)
+	    SHLIB_CFLAGS=""
+	    SHLIB_LD="ld -n32 -shared -rdata_shared"
+	    SHLIB_SUFFIX=".so"
+	    DL_OBJS="tclLoadDl.o"
+	    DL_LIBS=""
+	    case $LIBOBJS in
+    "mkstemp.$ac_objext"   | \
+  *" mkstemp.$ac_objext"   | \
+    "mkstemp.$ac_objext "* | \
+  *" mkstemp.$ac_objext "* ) ;;
+  *) LIBOBJS="$LIBOBJS mkstemp.$ac_objext" ;;
+esac
+
+	    if test $doRpath = yes; then
+
+		CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
+		LD_SEARCH_FLAGS='-rpath ${LIB_RUNTIME_DIR}'
+fi
+
+	    if test "$GCC" = yes; then
+
+		CFLAGS="$CFLAGS -mabi=n32"
+		LDFLAGS="$LDFLAGS -mabi=n32"
+
+else
+
+		case $system in
+		    IRIX-6.3)
+			# Use to build 6.2 compatible binaries on 6.3.
+			CFLAGS="$CFLAGS -n32 -D_OLD_TERMIOS"
+			;;
+		    *)
+			CFLAGS="$CFLAGS -n32"
+			;;
+		esac
+		LDFLAGS="$LDFLAGS -n32"
+
+fi
+
+	    ;;
+	IRIX64-6.*)
+	    SHLIB_CFLAGS=""
+	    SHLIB_LD="ld -n32 -shared -rdata_shared"
+	    SHLIB_SUFFIX=".so"
+	    DL_OBJS="tclLoadDl.o"
+	    DL_LIBS=""
+	    case $LIBOBJS in
+    "mkstemp.$ac_objext"   | \
+  *" mkstemp.$ac_objext"   | \
+    "mkstemp.$ac_objext "* | \
+  *" mkstemp.$ac_objext "* ) ;;
+  *) LIBOBJS="$LIBOBJS mkstemp.$ac_objext" ;;
+esac
+
+	    if test $doRpath = yes; then
+
+		CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
+		LD_SEARCH_FLAGS='-rpath ${LIB_RUNTIME_DIR}'
+fi
+
+
+	    # Check to enable 64-bit flags for compiler/linker
+
+	    if test "$do64bit" = yes; then
+
+	        if test "$GCC" = yes; then
+
+	            { echo "$as_me:$LINENO: WARNING: 64bit mode not supported by gcc" >&5
+echo "$as_me: WARNING: 64bit mode not supported by gcc" >&2;}
+
+else
+
+	            do64bit_ok=yes
+	            SHLIB_LD="ld -64 -shared -rdata_shared"
+	            CFLAGS="$CFLAGS -64"
+	            LDFLAGS_ARCH="-64"
+
+fi
+
+
+fi
+
+	    ;;
+	Linux*|GNU*|NetBSD-Debian)
+	    SHLIB_CFLAGS="-fPIC"
+	    SHLIB_SUFFIX=".so"
+
+	    CFLAGS_OPTIMIZE="-O2"
+	    # egcs-2.91.66 on Redhat Linux 6.0 generates lots of warnings
+	    # when you inline the string and math operations.  Turn this off to
+	    # get rid of the warnings.
+	    #CFLAGS_OPTIMIZE="${CFLAGS_OPTIMIZE} -D__NO_STRING_INLINES -D__NO_MATH_INLINES"
+
+	    SHLIB_LD='${CC} ${CFLAGS} ${LDFLAGS} -shared'
+	    DL_OBJS="tclLoadDl.o"
+	    DL_LIBS="-ldl"
+	    LDFLAGS="$LDFLAGS -Wl,--export-dynamic"
+	    if test $doRpath = yes; then
+
+		CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
+fi
+
+	    LD_SEARCH_FLAGS=${CC_SEARCH_FLAGS}
+	    if test "`uname -m`" = "alpha"; then
+  CFLAGS="$CFLAGS -mieee"
+fi
+
+	    if test $do64bit = yes; then
+
+		echo "$as_me:$LINENO: checking if compiler accepts -m64 flag" >&5
+echo $ECHO_N "checking if compiler accepts -m64 flag... $ECHO_C" >&6
+if test "${tcl_cv_cc_m64+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+		    hold_cflags=$CFLAGS
+		    CFLAGS="$CFLAGS -m64"
+		    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_cv_cc_m64=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+tcl_cv_cc_m64=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+		    CFLAGS=$hold_cflags
+fi
+echo "$as_me:$LINENO: result: $tcl_cv_cc_m64" >&5
+echo "${ECHO_T}$tcl_cv_cc_m64" >&6
+		if test $tcl_cv_cc_m64 = yes; then
+
+		    CFLAGS="$CFLAGS -m64"
+		    do64bit_ok=yes
+
+fi
+
+
+fi
+
+
+	    # The combo of gcc + glibc has a bug related to inlining of
+	    # functions like strtod(). The -fno-builtin flag should address
+	    # this problem but it does not work. The -fno-inline flag is kind
+	    # of overkill but it works. Disable inlining only when one of the
+	    # files in compat/*.c is being linked in.
+
+	    if test x"${USE_COMPAT}" != x; then
+  CFLAGS="$CFLAGS -fno-inline"
+fi
+
+	    ;;
+	Lynx*)
+	    SHLIB_CFLAGS="-fPIC"
+	    SHLIB_SUFFIX=".so"
+	    CFLAGS_OPTIMIZE=-02
+	    SHLIB_LD='${CC} -shared'
+	    DL_OBJS="tclLoadDl.o"
+	    DL_LIBS="-mshared -ldl"
+	    LD_FLAGS="-Wl,--export-dynamic"
+	    if test $doRpath = yes; then
+
+		CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
+		LD_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
+fi
+
+	    ;;
+	MP-RAS-02*)
+	    SHLIB_CFLAGS="-K PIC"
+	    SHLIB_LD='${CC} -G'
+	    SHLIB_LD_LIBS=""
+	    SHLIB_SUFFIX=".so"
+	    DL_OBJS="tclLoadDl.o"
+	    DL_LIBS="-ldl"
+	    CC_SEARCH_FLAGS=""
+	    LD_SEARCH_FLAGS=""
+	    ;;
+	MP-RAS-*)
+	    SHLIB_CFLAGS="-K PIC"
+	    SHLIB_LD='${CC} -G'
+	    SHLIB_LD_LIBS=""
+	    SHLIB_SUFFIX=".so"
+	    DL_OBJS="tclLoadDl.o"
+	    DL_LIBS="-ldl"
+	    LDFLAGS="$LDFLAGS -Wl,-Bexport"
+	    CC_SEARCH_FLAGS=""
+	    LD_SEARCH_FLAGS=""
+	    ;;
+	OpenBSD-*)
+	    arch=`arch -s`
+	    case "$arch" in
+	    alpha|sparc64)
+		SHLIB_CFLAGS="-fPIC"
+		;;
+	    *)
+		SHLIB_CFLAGS="-fpic"
+		;;
+	    esac
+	    SHLIB_LD='${CC} ${SHLIB_CFLAGS} -shared'
+	    SHLIB_SUFFIX=".so"
+	    DL_OBJS="tclLoadDl.o"
+	    DL_LIBS=""
+	    if test $doRpath = yes; then
+
+		CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
+fi
+
+	    LD_SEARCH_FLAGS=${CC_SEARCH_FLAGS}
+	    SHARED_LIB_SUFFIX='${TCL_TRIM_DOTS}.so${SHLIB_VERSION}'
+	    LDFLAGS="-Wl,-export-dynamic"
+	    CFLAGS_OPTIMIZE="-O2"
+	    if test "${TCL_THREADS}" = "1"; then
+
+		# On OpenBSD:	Compile with -pthread
+		#		Don't link with -lpthread
+		LIBS=`echo $LIBS | sed s/-lpthread//`
+		CFLAGS="$CFLAGS -pthread"
+
+fi
+
+	    # OpenBSD doesn't do version numbers with dots.
+	    UNSHARED_LIB_SUFFIX='${TCL_TRIM_DOTS}.a'
+	    TCL_LIB_VERSIONS_OK=nodots
+	    ;;
+	NetBSD-*)
+	    # NetBSD has ELF and can use 'cc -shared' to build shared libs
+	    SHLIB_CFLAGS="-fPIC"
+	    SHLIB_LD='${CC} ${SHLIB_CFLAGS} -shared'
+	    SHLIB_SUFFIX=".so"
+	    DL_OBJS="tclLoadDl.o"
+	    DL_LIBS=""
+	    LDFLAGS="$LDFLAGS -export-dynamic"
+	    if test $doRpath = yes; then
+
+		CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
+fi
+
+	    LD_SEARCH_FLAGS=${CC_SEARCH_FLAGS}
+	    if test "${TCL_THREADS}" = "1"; then
+
+		# The -pthread needs to go in the CFLAGS, not LIBS
+		LIBS=`echo $LIBS | sed s/-pthread//`
+		CFLAGS="$CFLAGS -pthread"
+	    	LDFLAGS="$LDFLAGS -pthread"
+
+fi
+
+	    ;;
+	DragonFly-*|FreeBSD-*)
+	    # This configuration from FreeBSD Ports.
+	    SHLIB_CFLAGS="-fPIC"
+	    SHLIB_LD="${CC} -shared"
+	    SHLIB_LD_LIBS="${SHLIB_LD_LIBS} -Wl,-soname,\$@"
+	    SHLIB_SUFFIX=".so"
+	    DL_OBJS="tclLoadDl.o"
+	    DL_LIBS=""
+	    LDFLAGS=""
+	    if test $doRpath = yes; then
+
+		CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
+		LD_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
+fi
+
+	    if test "${TCL_THREADS}" = "1"; then
+
+		# The -pthread needs to go in the LDFLAGS, not LIBS
+		LIBS=`echo $LIBS | sed s/-pthread//`
+		CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
+		LDFLAGS="$LDFLAGS $PTHREAD_LIBS"
+fi
+
+	    case $system in
+	    FreeBSD-3.*)
+		# Version numbers are dot-stripped by system policy.
+		TCL_TRIM_DOTS=`echo ${VERSION} | tr -d .`
+		UNSHARED_LIB_SUFFIX='${TCL_TRIM_DOTS}.a'
+		SHARED_LIB_SUFFIX='${TCL_TRIM_DOTS}.so'
+		TCL_LIB_VERSIONS_OK=nodots
+		;;
+	    esac
+	    ;;
+	Darwin-*)
+	    CFLAGS_OPTIMIZE="-Os"
+	    SHLIB_CFLAGS="-fno-common"
+	    # To avoid discrepancies between what headers configure sees during
+	    # preprocessing tests and compiling tests, move any -isysroot and
+	    # -mmacosx-version-min flags from CFLAGS to CPPFLAGS:
+	    CPPFLAGS="${CPPFLAGS} `echo " ${CFLAGS}" | \
+		awk 'BEGIN {FS=" +-";ORS=" "}; {for (i=2;i<=NF;i++) \
+		if ($i~/^(isysroot|mmacosx-version-min)/) print "-"$i}'`"
+	    CFLAGS="`echo " ${CFLAGS}" | \
+		awk 'BEGIN {FS=" +-";ORS=" "}; {for (i=2;i<=NF;i++) \
+		if (!($i~/^(isysroot|mmacosx-version-min)/)) print "-"$i}'`"
+	    if test $do64bit = yes; then
+
+		case `arch` in
+		    ppc)
+			echo "$as_me:$LINENO: checking if compiler accepts -arch ppc64 flag" >&5
+echo $ECHO_N "checking if compiler accepts -arch ppc64 flag... $ECHO_C" >&6
+if test "${tcl_cv_cc_arch_ppc64+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+			    hold_cflags=$CFLAGS
+			    CFLAGS="$CFLAGS -arch ppc64 -mpowerpc64 -mcpu=G5"
+			    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_cv_cc_arch_ppc64=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+tcl_cv_cc_arch_ppc64=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+			    CFLAGS=$hold_cflags
+fi
+echo "$as_me:$LINENO: result: $tcl_cv_cc_arch_ppc64" >&5
+echo "${ECHO_T}$tcl_cv_cc_arch_ppc64" >&6
+			if test $tcl_cv_cc_arch_ppc64 = yes; then
+
+			    CFLAGS="$CFLAGS -arch ppc64 -mpowerpc64 -mcpu=G5"
+			    do64bit_ok=yes
+
+fi
+;;
+		    i386)
+			echo "$as_me:$LINENO: checking if compiler accepts -arch x86_64 flag" >&5
+echo $ECHO_N "checking if compiler accepts -arch x86_64 flag... $ECHO_C" >&6
+if test "${tcl_cv_cc_arch_x86_64+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+			    hold_cflags=$CFLAGS
+			    CFLAGS="$CFLAGS -arch x86_64"
+			    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_cv_cc_arch_x86_64=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+tcl_cv_cc_arch_x86_64=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+			    CFLAGS=$hold_cflags
+fi
+echo "$as_me:$LINENO: result: $tcl_cv_cc_arch_x86_64" >&5
+echo "${ECHO_T}$tcl_cv_cc_arch_x86_64" >&6
+			if test $tcl_cv_cc_arch_x86_64 = yes; then
+
+			    CFLAGS="$CFLAGS -arch x86_64"
+			    do64bit_ok=yes
+
+fi
+;;
+		    *)
+			{ echo "$as_me:$LINENO: WARNING: Don't know how enable 64-bit on architecture \`arch\`" >&5
+echo "$as_me: WARNING: Don't know how enable 64-bit on architecture \`arch\`" >&2;};;
+		esac
+
+else
+
+		# Check for combined 32-bit and 64-bit fat build
+		if echo "$CFLAGS " |grep -E -q -- '-arch (ppc64|x86_64) ' \
+		    && echo "$CFLAGS " |grep -E -q -- '-arch (ppc|i386) '; then
+
+		    fat_32_64=yes
+fi
+
+
+fi
+
+	    SHLIB_LD='${CC} -dynamiclib ${CFLAGS} ${LDFLAGS}'
+	    echo "$as_me:$LINENO: checking if ld accepts -single_module flag" >&5
+echo $ECHO_N "checking if ld accepts -single_module flag... $ECHO_C" >&6
+if test "${tcl_cv_ld_single_module+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+		hold_ldflags=$LDFLAGS
+		LDFLAGS="$LDFLAGS -dynamiclib -Wl,-single_module"
+		cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+int
+main ()
+{
+int i;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_cv_ld_single_module=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+tcl_cv_ld_single_module=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+		LDFLAGS=$hold_ldflags
+fi
+echo "$as_me:$LINENO: result: $tcl_cv_ld_single_module" >&5
+echo "${ECHO_T}$tcl_cv_ld_single_module" >&6
+	    if test $tcl_cv_ld_single_module = yes; then
+
+		SHLIB_LD="${SHLIB_LD} -Wl,-single_module"
+
+fi
+
+	    SHLIB_SUFFIX=".dylib"
+	    DL_OBJS="tclLoadDyld.o"
+	    DL_LIBS=""
+	    # Don't use -prebind when building for Mac OS X 10.4 or later only:
+	    if test "`echo "${MACOSX_DEPLOYMENT_TARGET}" | awk -F '10\\.' '{print int($2)}'`" -lt 4 -a \
+		"`echo "${CPPFLAGS}" | awk -F '-mmacosx-version-min=10\\.' '{print int($2)}'`" -lt 4; then
+
+		LDFLAGS="$LDFLAGS -prebind"
+fi
+
+	    LDFLAGS="$LDFLAGS -headerpad_max_install_names"
+	    echo "$as_me:$LINENO: checking if ld accepts -search_paths_first flag" >&5
+echo $ECHO_N "checking if ld accepts -search_paths_first flag... $ECHO_C" >&6
+if test "${tcl_cv_ld_search_paths_first+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+		hold_ldflags=$LDFLAGS
+		LDFLAGS="$LDFLAGS -Wl,-search_paths_first"
+		cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+int
+main ()
+{
+int i;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_cv_ld_search_paths_first=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+tcl_cv_ld_search_paths_first=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+		LDFLAGS=$hold_ldflags
+fi
+echo "$as_me:$LINENO: result: $tcl_cv_ld_search_paths_first" >&5
+echo "${ECHO_T}$tcl_cv_ld_search_paths_first" >&6
+	    if test $tcl_cv_ld_search_paths_first = yes; then
+
+		LDFLAGS="$LDFLAGS -Wl,-search_paths_first"
+
+fi
+
+	    if test "$tcl_cv_cc_visibility_hidden" != yes; then
+
+
+cat >>confdefs.h <<\_ACEOF
+#define MODULE_SCOPE __private_extern__
+_ACEOF
+
+
+fi
+
+	    CC_SEARCH_FLAGS=""
+	    LD_SEARCH_FLAGS=""
+	    LD_LIBRARY_PATH_VAR="DYLD_LIBRARY_PATH"
+
+cat >>confdefs.h <<\_ACEOF
+#define MAC_OSX_TCL 1
+_ACEOF
+
+	    PLAT_OBJS='${MAC_OSX_OBJS}'
+	    PLAT_SRCS='${MAC_OSX_SRCS}'
+	    echo "$as_me:$LINENO: checking whether to use CoreFoundation" >&5
+echo $ECHO_N "checking whether to use CoreFoundation... $ECHO_C" >&6
+	    # Check whether --enable-corefoundation or --disable-corefoundation was given.
+if test "${enable_corefoundation+set}" = set; then
+  enableval="$enable_corefoundation"
+  tcl_corefoundation=$enableval
+else
+  tcl_corefoundation=yes
+fi;
+	    echo "$as_me:$LINENO: result: $tcl_corefoundation" >&5
+echo "${ECHO_T}$tcl_corefoundation" >&6
+	    if test $tcl_corefoundation = yes; then
+
+		echo "$as_me:$LINENO: checking for CoreFoundation.framework" >&5
+echo $ECHO_N "checking for CoreFoundation.framework... $ECHO_C" >&6
+if test "${tcl_cv_lib_corefoundation+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+		    hold_libs=$LIBS
+		    if test "$fat_32_64" = yes; then
+
+			for v in CFLAGS CPPFLAGS LDFLAGS; do
+			    # On Tiger there is no 64-bit CF, so remove 64-bit
+			    # archs from CFLAGS et al. while testing for
+			    # presence of CF. 64-bit CF is disabled in
+			    # tclUnixPort.h if necessary.
+			    eval 'hold_'$v'="$'$v'";'$v'="`echo "$'$v' "|sed -e "s/-arch ppc64 / /g" -e "s/-arch x86_64 / /g"`"'
+			done
+fi
+
+		    LIBS="$LIBS -framework CoreFoundation"
+		    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <CoreFoundation/CoreFoundation.h>
+int
+main ()
+{
+CFBundleRef b = CFBundleGetMainBundle();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_cv_lib_corefoundation=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+tcl_cv_lib_corefoundation=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+		    if test "$fat_32_64" = yes; then
+
+			for v in CFLAGS CPPFLAGS LDFLAGS; do
+			    eval $v'="$hold_'$v'"'
+		        done
+fi
+
+		    LIBS=$hold_libs
+fi
+echo "$as_me:$LINENO: result: $tcl_cv_lib_corefoundation" >&5
+echo "${ECHO_T}$tcl_cv_lib_corefoundation" >&6
+		if test $tcl_cv_lib_corefoundation = yes; then
+
+		    LIBS="$LIBS -framework CoreFoundation"
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_COREFOUNDATION 1
+_ACEOF
+
+
+else
+  tcl_corefoundation=no
+fi
+
+		if test "$fat_32_64" = yes -a $tcl_corefoundation = yes; then
+
+		    echo "$as_me:$LINENO: checking for 64-bit CoreFoundation" >&5
+echo $ECHO_N "checking for 64-bit CoreFoundation... $ECHO_C" >&6
+if test "${tcl_cv_lib_corefoundation_64+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+			for v in CFLAGS CPPFLAGS LDFLAGS; do
+			    eval 'hold_'$v'="$'$v'";'$v'="`echo "$'$v' "|sed -e "s/-arch ppc / /g" -e "s/-arch i386 / /g"`"'
+			done
+			cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <CoreFoundation/CoreFoundation.h>
+int
+main ()
+{
+CFBundleRef b = CFBundleGetMainBundle();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_cv_lib_corefoundation_64=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+tcl_cv_lib_corefoundation_64=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+			for v in CFLAGS CPPFLAGS LDFLAGS; do
+			    eval $v'="$hold_'$v'"'
+			done
+fi
+echo "$as_me:$LINENO: result: $tcl_cv_lib_corefoundation_64" >&5
+echo "${ECHO_T}$tcl_cv_lib_corefoundation_64" >&6
+		    if test $tcl_cv_lib_corefoundation_64 = no; then
+
+
+cat >>confdefs.h <<\_ACEOF
+#define NO_COREFOUNDATION_64 1
+_ACEOF
+
+                        LDFLAGS="$LDFLAGS -Wl,-no_arch_warnings"
+
+fi
+
+
+fi
+
+
+fi
+
+	    ;;
+	NEXTSTEP-*)
+	    SHLIB_CFLAGS=""
+	    SHLIB_LD='${CC} -nostdlib -r'
+	    SHLIB_LD_LIBS=""
+	    SHLIB_SUFFIX=".so"
+	    DL_OBJS="tclLoadNext.o"
+	    DL_LIBS=""
+	    CC_SEARCH_FLAGS=""
+	    LD_SEARCH_FLAGS=""
+	    ;;
+	OS/390-*)
+	    SHLIB_LD_LIBS=""
+	    CFLAGS_OPTIMIZE=""		# Optimizer is buggy
+
+cat >>confdefs.h <<\_ACEOF
+#define _OE_SOCKETS 1
+_ACEOF
+
+	    ;;
+	OSF1-1.0|OSF1-1.1|OSF1-1.2)
+	    # OSF/1 1.[012] from OSF, and derivatives, including Paragon OSF/1
+	    SHLIB_CFLAGS=""
+	    # Hack: make package name same as library name
+	    SHLIB_LD='ld -R -export :'
+	    SHLIB_LD_LIBS=""
+	    SHLIB_SUFFIX=".so"
+	    DL_OBJS="tclLoadOSF.o"
+	    DL_LIBS=""
+	    CC_SEARCH_FLAGS=""
+	    LD_SEARCH_FLAGS=""
+	    ;;
+	OSF1-1.*)
+	    # OSF/1 1.3 from OSF using ELF, and derivatives, including AD2
+	    SHLIB_CFLAGS="-fPIC"
+	    if test "$SHARED_BUILD" = 1; then
+  SHLIB_LD="ld -shared"
+else
+
+	        SHLIB_LD="ld -non_shared"
+
+fi
+
+	    SHLIB_LD_LIBS=""
+	    SHLIB_SUFFIX=".so"
+	    DL_OBJS="tclLoadDl.o"
+	    DL_LIBS=""
+	    CC_SEARCH_FLAGS=""
+	    LD_SEARCH_FLAGS=""
+	    ;;
+	OSF1-V*)
+	    # Digital OSF/1
+	    SHLIB_CFLAGS=""
+	    if test "$SHARED_BUILD" = 1; then
+
+	        SHLIB_LD='ld -shared -expect_unresolved "*"'
+
+else
+
+	        SHLIB_LD='ld -non_shared -expect_unresolved "*"'
+
+fi
+
+	    SHLIB_SUFFIX=".so"
+	    DL_OBJS="tclLoadDl.o"
+	    DL_LIBS=""
+	    if test $doRpath = yes; then
+
+		CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
+		LD_SEARCH_FLAGS='-rpath ${LIB_RUNTIME_DIR}'
+fi
+
+	    if test "$GCC" = yes; then
+  CFLAGS="$CFLAGS -mieee"
+else
+
+		CFLAGS="$CFLAGS -DHAVE_TZSET -std1 -ieee"
+fi
+
+	    # see pthread_intro(3) for pthread support on osf1, k.furukawa
+	    if test "${TCL_THREADS}" = 1; then
+
+		CFLAGS="$CFLAGS -DHAVE_PTHREAD_ATTR_SETSTACKSIZE"
+		CFLAGS="$CFLAGS -DTCL_THREAD_STACK_MIN=PTHREAD_STACK_MIN*64"
+		LIBS=`echo $LIBS | sed s/-lpthreads//`
+		if test "$GCC" = yes; then
+
+		    LIBS="$LIBS -lpthread -lmach -lexc"
+
+else
+
+		    CFLAGS="$CFLAGS -pthread"
+		    LDFLAGS="$LDFLAGS -pthread"
+
+fi
+
+
+fi
+
+	    ;;
+	QNX-6*)
+	    # QNX RTP
+	    # This may work for all QNX, but it was only reported for v6.
+	    SHLIB_CFLAGS="-fPIC"
+	    SHLIB_LD="ld -Bshareable -x"
+	    SHLIB_LD_LIBS=""
+	    SHLIB_SUFFIX=".so"
+	    DL_OBJS="tclLoadDl.o"
+	    # dlopen is in -lc on QNX
+	    DL_LIBS=""
+	    CC_SEARCH_FLAGS=""
+	    LD_SEARCH_FLAGS=""
+	    ;;
+	SCO_SV-3.2*)
+	    # Note, dlopen is available only on SCO 3.2.5 and greater. However,
+	    # this test works, since "uname -s" was non-standard in 3.2.4 and
+	    # below.
+	    if test "$GCC" = yes; then
+
+	    	SHLIB_CFLAGS="-fPIC -melf"
+	    	LDFLAGS="$LDFLAGS -melf -Wl,-Bexport"
+
+else
+
+	    	SHLIB_CFLAGS="-Kpic -belf"
+	    	LDFLAGS="$LDFLAGS -belf -Wl,-Bexport"
+
+fi
+
+	    SHLIB_LD="ld -G"
+	    SHLIB_LD_LIBS=""
+	    SHLIB_SUFFIX=".so"
+	    DL_OBJS="tclLoadDl.o"
+	    DL_LIBS=""
+	    CC_SEARCH_FLAGS=""
+	    LD_SEARCH_FLAGS=""
+	    ;;
+	SINIX*5.4*)
+	    SHLIB_CFLAGS="-K PIC"
+	    SHLIB_LD='${CC} -G'
+	    SHLIB_LD_LIBS=""
+	    SHLIB_SUFFIX=".so"
+	    DL_OBJS="tclLoadDl.o"
+	    DL_LIBS="-ldl"
+	    CC_SEARCH_FLAGS=""
+	    LD_SEARCH_FLAGS=""
+	    ;;
+	SunOS-4*)
+	    SHLIB_CFLAGS="-PIC"
+	    SHLIB_LD="ld"
+	    SHLIB_LD_LIBS=""
+	    SHLIB_SUFFIX=".so"
+	    DL_OBJS="tclLoadDl.o"
+	    DL_LIBS="-ldl"
+	    CC_SEARCH_FLAGS='-L${LIB_RUNTIME_DIR}'
+	    LD_SEARCH_FLAGS=${CC_SEARCH_FLAGS}
+
+	    # SunOS can't handle version numbers with dots in them in library
+	    # specs, like -ltcl7.5, so use -ltcl75 instead.  Also, it
+	    # requires an extra version number at the end of .so file names.
+	    # So, the library has to have a name like libtcl75.so.1.0
+
+	    SHARED_LIB_SUFFIX='${TCL_TRIM_DOTS}.so${SHLIB_VERSION}'
+	    UNSHARED_LIB_SUFFIX='${TCL_TRIM_DOTS}.a'
+	    TCL_LIB_VERSIONS_OK=nodots
+	    ;;
+	SunOS-5.[0-6])
+	    # Careful to not let 5.10+ fall into this case
+
+	    # Note: If _REENTRANT isn't defined, then Solaris
+	    # won't define thread-safe library routines.
+
+
+cat >>confdefs.h <<\_ACEOF
+#define _REENTRANT 1
+_ACEOF
+
+
+cat >>confdefs.h <<\_ACEOF
+#define _POSIX_PTHREAD_SEMANTICS 1
+_ACEOF
+
+
+	    SHLIB_CFLAGS="-KPIC"
+	    SHLIB_SUFFIX=".so"
+	    DL_OBJS="tclLoadDl.o"
+	    DL_LIBS="-ldl"
+	    if test "$GCC" = yes; then
+
+		SHLIB_LD='${CC} -shared'
+		CC_SEARCH_FLAGS='-Wl,-R,${LIB_RUNTIME_DIR}'
+		LD_SEARCH_FLAGS=${CC_SEARCH_FLAGS}
+
+else
+
+		SHLIB_LD="/usr/ccs/bin/ld -G -z text"
+		CC_SEARCH_FLAGS='-R ${LIB_RUNTIME_DIR}'
+		LD_SEARCH_FLAGS=${CC_SEARCH_FLAGS}
+
+fi
+
+	    ;;
+	SunOS-5*)
+	    # Note: If _REENTRANT isn't defined, then Solaris
+	    # won't define thread-safe library routines.
+
+
+cat >>confdefs.h <<\_ACEOF
+#define _REENTRANT 1
+_ACEOF
+
+
+cat >>confdefs.h <<\_ACEOF
+#define _POSIX_PTHREAD_SEMANTICS 1
+_ACEOF
+
+
+	    SHLIB_CFLAGS="-KPIC"
+
+	    # Check to enable 64-bit flags for compiler/linker
+	    if test "$do64bit" = yes; then
+
+		arch=`isainfo`
+		if test "$arch" = "sparcv9 sparc"; then
+
+		    if test "$GCC" = yes; then
+
+			if test "`${CC} -dumpversion | awk -F. '{print $1}'`" -lt 3; then
+
+			    { echo "$as_me:$LINENO: WARNING: 64bit mode not supported with GCC < 3.2 on $system" >&5
+echo "$as_me: WARNING: 64bit mode not supported with GCC < 3.2 on $system" >&2;}
+
+else
+
+			    do64bit_ok=yes
+			    CFLAGS="$CFLAGS -m64 -mcpu=v9"
+			    LDFLAGS="$LDFLAGS -m64 -mcpu=v9"
+			    SHLIB_CFLAGS="-fPIC"
+
+fi
+
+
+else
+
+			do64bit_ok=yes
+			if test "$do64bitVIS" = yes; then
+
+			    CFLAGS="$CFLAGS -xarch=v9a"
+			    LDFLAGS_ARCH="-xarch=v9a"
+
+else
+
+			    CFLAGS="$CFLAGS -xarch=v9"
+			    LDFLAGS_ARCH="-xarch=v9"
+
+fi
+
+			# Solaris 64 uses this as well
+			#LD_LIBRARY_PATH_VAR="LD_LIBRARY_PATH_64"
+
+fi
+
+
+else
+  if test "$arch" = "amd64 i386"; then
+
+		    if test "$GCC" = yes; then
+
+			case $system in
+			    SunOS-5.1[1-9]*|SunOS-5.[2-9][0-9]*)
+				do64bit_ok=yes
+				CFLAGS="$CFLAGS -m64"
+				LDFLAGS="$LDFLAGS -m64";;
+			    *)
+				{ echo "$as_me:$LINENO: WARNING: 64bit mode not supported with GCC on $system" >&5
+echo "$as_me: WARNING: 64bit mode not supported with GCC on $system" >&2;};;
+			esac
+
+else
+
+			do64bit_ok=yes
+			case $system in
+			    SunOS-5.1[1-9]*|SunOS-5.[2-9][0-9]*)
+				CFLAGS="$CFLAGS -m64"
+				LDFLAGS="$LDFLAGS -m64";;
+			    *)
+				CFLAGS="$CFLAGS -xarch=amd64"
+				LDFLAGS="$LDFLAGS -xarch=amd64";;
+			esac
+
+fi
+
+
+else
+  { echo "$as_me:$LINENO: WARNING: 64bit mode not supported for $arch" >&5
+echo "$as_me: WARNING: 64bit mode not supported for $arch" >&2;}
+fi
+
+fi
+
+
+fi
+
+
+	    #--------------------------------------------------------------------
+	    # On Solaris 5.x i386 with the sunpro compiler we need to link
+	    # with sunmath to get floating point rounding control
+	    #--------------------------------------------------------------------
+	    if test "$GCC" = yes; then
+  use_sunmath=no
+else
+
+		arch=`isainfo`
+		echo "$as_me:$LINENO: checking whether to use -lsunmath for fp rounding control" >&5
+echo $ECHO_N "checking whether to use -lsunmath for fp rounding control... $ECHO_C" >&6
+		if test "$arch" = "amd64 i386" -o "$arch" = "i386"; then
+
+			echo "$as_me:$LINENO: result: yes" >&5
+echo "${ECHO_T}yes" >&6
+			MATH_LIBS="-lsunmath $MATH_LIBS"
+			if test "${ac_cv_header_sunmath_h+set}" = set; then
+  echo "$as_me:$LINENO: checking for sunmath.h" >&5
+echo $ECHO_N "checking for sunmath.h... $ECHO_C" >&6
+if test "${ac_cv_header_sunmath_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_sunmath_h" >&5
+echo "${ECHO_T}$ac_cv_header_sunmath_h" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking sunmath.h usability" >&5
+echo $ECHO_N "checking sunmath.h usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <sunmath.h>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_header_compiler=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
+
+# Is the header present?
+echo "$as_me:$LINENO: checking sunmath.h presence" >&5
+echo $ECHO_N "checking sunmath.h presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <sunmath.h>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: sunmath.h: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: sunmath.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: sunmath.h: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: sunmath.h: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: sunmath.h: present but cannot be compiled" >&5
+echo "$as_me: WARNING: sunmath.h: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: sunmath.h:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: sunmath.h:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: sunmath.h: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: sunmath.h: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: sunmath.h:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: sunmath.h:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: sunmath.h: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: sunmath.h: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: sunmath.h: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: sunmath.h: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ------------------------------ ##
+## Report this to the tcl lists.  ##
+## ------------------------------ ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for sunmath.h" >&5
+echo $ECHO_N "checking for sunmath.h... $ECHO_C" >&6
+if test "${ac_cv_header_sunmath_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_cv_header_sunmath_h=$ac_header_preproc
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_sunmath_h" >&5
+echo "${ECHO_T}$ac_cv_header_sunmath_h" >&6
+
+fi
+
+
+			use_sunmath=yes
+
+else
+
+			echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+			use_sunmath=no
+
+fi
+
+
+fi
+
+	    SHLIB_SUFFIX=".so"
+	    DL_OBJS="tclLoadDl.o"
+	    DL_LIBS="-ldl"
+	    if test "$GCC" = yes; then
+
+		SHLIB_LD='${CC} -shared'
+		CC_SEARCH_FLAGS='-Wl,-R,${LIB_RUNTIME_DIR}'
+		LD_SEARCH_FLAGS=${CC_SEARCH_FLAGS}
+		if test "$do64bit_ok" = yes; then
+
+		    if test "$arch" = "sparcv9 sparc"; then
+
+			# We need to specify -static-libgcc or we need to
+			# add the path to the sparv9 libgcc.
+			SHLIB_LD="$SHLIB_LD -m64 -mcpu=v9 -static-libgcc"
+			# for finding sparcv9 libgcc, get the regular libgcc
+			# path, remove so name and append 'sparcv9'
+			#v9gcclibdir="`gcc -print-file-name=libgcc_s.so` | ..."
+			#CC_SEARCH_FLAGS="${CC_SEARCH_FLAGS},-R,$v9gcclibdir"
+
+else
+  if test "$arch" = "amd64 i386"; then
+
+			SHLIB_LD="$SHLIB_LD -m64 -static-libgcc"
+
+fi
+
+fi
+
+
+fi
+
+
+else
+
+		if test "$use_sunmath" = yes; then
+  textmode=textoff
+else
+  textmode=text
+fi
+
+		case $system in
+		    SunOS-5.[1-9][0-9]*|SunOS-5.[7-9])
+			SHLIB_LD="\${CC} -G -z $textmode \${LDFLAGS}";;
+		    *)
+			SHLIB_LD="/usr/ccs/bin/ld -G -z $textmode";;
+		esac
+		CC_SEARCH_FLAGS='-Wl,-R,${LIB_RUNTIME_DIR}'
+		LD_SEARCH_FLAGS='-R ${LIB_RUNTIME_DIR}'
+
+fi
+
+	    ;;
+	UNIX_SV* | UnixWare-5*)
+	    SHLIB_CFLAGS="-KPIC"
+	    SHLIB_LD='${CC} -G'
+	    SHLIB_LD_LIBS=""
+	    SHLIB_SUFFIX=".so"
+	    DL_OBJS="tclLoadDl.o"
+	    DL_LIBS="-ldl"
+	    # Some UNIX_SV* systems (unixware 1.1.2 for example) have linkers
+	    # that don't grok the -Bexport option.  Test that it does.
+	    echo "$as_me:$LINENO: checking for ld accepts -Bexport flag" >&5
+echo $ECHO_N "checking for ld accepts -Bexport flag... $ECHO_C" >&6
+if test "${tcl_cv_ld_Bexport+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+		hold_ldflags=$LDFLAGS
+		LDFLAGS="$LDFLAGS -Wl,-Bexport"
+		cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+int
+main ()
+{
+int i;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_cv_ld_Bexport=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+tcl_cv_ld_Bexport=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+	        LDFLAGS=$hold_ldflags
+fi
+echo "$as_me:$LINENO: result: $tcl_cv_ld_Bexport" >&5
+echo "${ECHO_T}$tcl_cv_ld_Bexport" >&6
+	    if test $tcl_cv_ld_Bexport = yes; then
+
+		LDFLAGS="$LDFLAGS -Wl,-Bexport"
+
+fi
+
+	    CC_SEARCH_FLAGS=""
+	    LD_SEARCH_FLAGS=""
+	    ;;
+    esac
+
+    if test "$do64bit" = yes -a "$do64bit_ok" = no; then
+
+	{ echo "$as_me:$LINENO: WARNING: 64bit support being disabled -- don't know magic for this platform" >&5
+echo "$as_me: WARNING: 64bit support being disabled -- don't know magic for this platform" >&2;}
+
+fi
+
+
+    if test "$do64bit" = yes -a "$do64bit_ok" = yes; then
+
+
+cat >>confdefs.h <<\_ACEOF
+#define TCL_CFG_DO64BIT 1
+_ACEOF
+
+
+fi
+
+
+
+
+    # Step 4: disable dynamic loading if requested via a command-line switch.
+
+    # Check whether --enable-load or --disable-load was given.
+if test "${enable_load+set}" = set; then
+  enableval="$enable_load"
+  tcl_ok=$enableval
+else
+  tcl_ok=yes
+fi;
+    if test "$tcl_ok" = no; then
+  DL_OBJS=""
+fi
+
+
+    if test "x$DL_OBJS" != x; then
+  BUILD_DLTEST="\$(DLTEST_TARGETS)"
+else
+
+	{ echo "$as_me:$LINENO: WARNING: Can't figure out how to do dynamic loading or shared libraries on this system." >&5
+echo "$as_me: WARNING: Can't figure out how to do dynamic loading or shared libraries on this system." >&2;}
+	SHLIB_CFLAGS=""
+	SHLIB_LD=""
+	SHLIB_SUFFIX=""
+	DL_OBJS="tclLoadNone.o"
+	DL_LIBS=""
+	LDFLAGS="$LDFLAGS_ORIG"
+	CC_SEARCH_FLAGS=""
+	LD_SEARCH_FLAGS=""
+	BUILD_DLTEST=""
+
+fi
+
+    LDFLAGS="$LDFLAGS $LDFLAGS_ARCH"
+
+    # If we're running gcc, then change the C flags for compiling shared
+    # libraries to the right flags for gcc, instead of those for the
+    # standard manufacturer compiler.
+
+    if test "$DL_OBJS" != "tclLoadNone.o" -a "$GCC" = yes; then
+
+	case $system in
+	    AIX-*) ;;
+	    BSD/OS*) ;;
+	    CYGWIN_*|MINGW32_*) ;;
+	    IRIX*) ;;
+	    NetBSD-*|DragonFly-*|FreeBSD-*|OpenBSD-*) ;;
+	    Darwin-*) ;;
+	    SCO_SV-3.2*) ;;
+	    *) SHLIB_CFLAGS="-fPIC" ;;
+	esac
+fi
+
+
+    if test "$tcl_cv_cc_visibility_hidden" != yes; then
+
+
+cat >>confdefs.h <<\_ACEOF
+#define MODULE_SCOPE extern
+_ACEOF
+
+
+fi
+
+
+    if test "$SHARED_LIB_SUFFIX" = ""; then
+
+	SHARED_LIB_SUFFIX='${VERSION}${SHLIB_SUFFIX}'
+fi
+
+    if test "$UNSHARED_LIB_SUFFIX" = ""; then
+
+	UNSHARED_LIB_SUFFIX='${VERSION}.a'
+fi
+
+    DLL_INSTALL_DIR="\$(LIB_INSTALL_DIR)"
+
+    if test "${SHARED_BUILD}" = 1 -a "${SHLIB_SUFFIX}" != ""; then
+
+        LIB_SUFFIX=${SHARED_LIB_SUFFIX}
+        MAKE_LIB='${SHLIB_LD} -o $@ ${OBJS} ${SHLIB_LD_LIBS} ${TCL_SHLIB_LD_EXTRAS} ${TK_SHLIB_LD_EXTRAS} ${LD_SEARCH_FLAGS}'
+        if test "${SHLIB_SUFFIX}" = ".dll"; then
+
+            INSTALL_LIB='$(INSTALL_LIBRARY) $(LIB_FILE) "$(BIN_INSTALL_DIR)/$(LIB_FILE)";if test -f $(LIB_FILE).a; then $(INSTALL_DATA) $(LIB_FILE).a "$(LIB_INSTALL_DIR)"; fi;'
+            DLL_INSTALL_DIR="\$(BIN_INSTALL_DIR)"
+
+else
+
+            INSTALL_LIB='$(INSTALL_LIBRARY) $(LIB_FILE) "$(LIB_INSTALL_DIR)/$(LIB_FILE)"'
+
+fi
+
+
+else
+
+        LIB_SUFFIX=${UNSHARED_LIB_SUFFIX}
+
+        if test "$RANLIB" = ""; then
+
+            MAKE_LIB='$(STLIB_LD) $@ ${OBJS}'
+
+else
+
+            MAKE_LIB='${STLIB_LD} $@ ${OBJS} ; ${RANLIB} $@'
+
+fi
+
+        INSTALL_LIB='$(INSTALL_LIBRARY) $(LIB_FILE) "$(LIB_INSTALL_DIR)/$(LIB_FILE)"'
+
+fi
+
+
+    # Stub lib does not depend on shared/static configuration
+    if test "$RANLIB" = ""; then
+
+        MAKE_STUB_LIB='${STLIB_LD} $@ ${STUB_LIB_OBJS}'
+
+else
+
+        MAKE_STUB_LIB='${STLIB_LD} $@ ${STUB_LIB_OBJS} ; ${RANLIB} $@'
+
+fi
+
+    INSTALL_STUB_LIB='$(INSTALL_LIBRARY) $(STUB_LIB_FILE) "$(LIB_INSTALL_DIR)/$(STUB_LIB_FILE)"'
+
+    # Define TCL_LIBS now that we know what DL_LIBS is.
+    # The trick here is that we don't want to change the value of TCL_LIBS if
+    # it is already set when tclConfig.sh had been loaded by Tk.
+    if test "x${TCL_LIBS}" = x; then
+
+        TCL_LIBS="${DL_LIBS} ${LIBS} ${MATH_LIBS}"
+fi
+
+
+
+	# See if the compiler supports casting to a union type.
+	# This is used to stop gcc from printing a compiler
+	# warning when initializing a union member.
+
+	echo "$as_me:$LINENO: checking for cast to union support" >&5
+echo $ECHO_N "checking for cast to union support... $ECHO_C" >&6
+if test "${tcl_cv_cast_to_union+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+		  union foo { int i; double d; };
+		  union foo f = (union foo) (int) 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_cv_cast_to_union=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+tcl_cv_cast_to_union=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+
+fi
+echo "$as_me:$LINENO: result: $tcl_cv_cast_to_union" >&5
+echo "${ECHO_T}$tcl_cv_cast_to_union" >&6
+	if test "$tcl_cv_cast_to_union" = "yes"; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_CAST_TO_UNION 1
+_ACEOF
+
+	fi
+
+    # FIXME: This subst was left in only because the TCL_DL_LIBS
+    # entry in tclConfig.sh uses it. It is not clear why someone
+    # would use TCL_DL_LIBS instead of TCL_LIBS.
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+cat >>confdefs.h <<_ACEOF
+#define TCL_SHLIB_EXT "${SHLIB_SUFFIX}"
+_ACEOF
+
+
+
+
+
+
+
+
+
+
+
+    echo "$as_me:$LINENO: checking for build with symbols" >&5
+echo $ECHO_N "checking for build with symbols... $ECHO_C" >&6
+    # Check whether --enable-symbols or --disable-symbols was given.
+if test "${enable_symbols+set}" = set; then
+  enableval="$enable_symbols"
+  tcl_ok=$enableval
+else
+  tcl_ok=no
+fi;
+# FIXME: Currently, LDFLAGS_DEFAULT is not used, it should work like CFLAGS_DEFAULT.
+    DBGX=""
+    if test "$tcl_ok" = "no"; then
+	CFLAGS_DEFAULT='$(CFLAGS_OPTIMIZE)'
+	LDFLAGS_DEFAULT='$(LDFLAGS_OPTIMIZE)'
+
+cat >>confdefs.h <<\_ACEOF
+#define NDEBUG 1
+_ACEOF
+
+	echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+
+cat >>confdefs.h <<\_ACEOF
+#define TCL_CFG_OPTIMIZED 1
+_ACEOF
+
+    else
+	CFLAGS_DEFAULT='$(CFLAGS_DEBUG)'
+	LDFLAGS_DEFAULT='$(LDFLAGS_DEBUG)'
+	if test "$tcl_ok" = "yes"; then
+	    echo "$as_me:$LINENO: result: yes (standard debugging)" >&5
+echo "${ECHO_T}yes (standard debugging)" >&6
+	fi
+    fi
+
+
+
+    if test "$tcl_ok" = "mem" -o "$tcl_ok" = "all"; then
+
+cat >>confdefs.h <<\_ACEOF
+#define TCL_MEM_DEBUG 1
+_ACEOF
+
+    fi
+
+    	if test "$tcl_ok" = "compile" -o "$tcl_ok" = "all"; then
+
+cat >>confdefs.h <<\_ACEOF
+#define TCL_COMPILE_DEBUG 1
+_ACEOF
+
+
+cat >>confdefs.h <<\_ACEOF
+#define TCL_COMPILE_STATS 1
+_ACEOF
+
+	fi
+
+    if test "$tcl_ok" != "yes" -a "$tcl_ok" != "no"; then
+	if test "$tcl_ok" = "all"; then
+	    echo "$as_me:$LINENO: result: enabled symbols mem compile debugging" >&5
+echo "${ECHO_T}enabled symbols mem compile debugging" >&6
+	else
+	    echo "$as_me:$LINENO: result: enabled $tcl_ok debugging" >&5
+echo "${ECHO_T}enabled $tcl_ok debugging" >&6
+	fi
+    fi
+
+
+
+cat >>confdefs.h <<\_ACEOF
+#define TCL_TOMMATH 1
+_ACEOF
+
+
+cat >>confdefs.h <<\_ACEOF
+#define MP_PREC 4
+_ACEOF
+
+
+#--------------------------------------------------------------------
+#	Detect what compiler flags to set for 64-bit support.
+#--------------------------------------------------------------------
+
+
+    echo "$as_me:$LINENO: checking for required early compiler flags" >&5
+echo $ECHO_N "checking for required early compiler flags... $ECHO_C" >&6
+    tcl_flags=""
+
+    if test "${tcl_cv_flag__isoc99_source+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <stdlib.h>
+int
+main ()
+{
+char *p = (char *)strtoll; char *q = (char *)strtoull;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_cv_flag__isoc99_source=no
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#define _ISOC99_SOURCE 1
+#include <stdlib.h>
+int
+main ()
+{
+char *p = (char *)strtoll; char *q = (char *)strtoull;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_cv_flag__isoc99_source=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+tcl_cv_flag__isoc99_source=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+
+    if test "x${tcl_cv_flag__isoc99_source}" = "xyes" ; then
+
+cat >>confdefs.h <<\_ACEOF
+#define _ISOC99_SOURCE 1
+_ACEOF
+
+	tcl_flags="$tcl_flags _ISOC99_SOURCE"
+    fi
+
+
+    if test "${tcl_cv_flag__largefile64_source+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <sys/stat.h>
+int
+main ()
+{
+struct stat64 buf; int i = stat64("/", &buf);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_cv_flag__largefile64_source=no
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#define _LARGEFILE64_SOURCE 1
+#include <sys/stat.h>
+int
+main ()
+{
+struct stat64 buf; int i = stat64("/", &buf);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_cv_flag__largefile64_source=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+tcl_cv_flag__largefile64_source=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+
+    if test "x${tcl_cv_flag__largefile64_source}" = "xyes" ; then
+
+cat >>confdefs.h <<\_ACEOF
+#define _LARGEFILE64_SOURCE 1
+_ACEOF
+
+	tcl_flags="$tcl_flags _LARGEFILE64_SOURCE"
+    fi
+
+
+    if test "${tcl_cv_flag__largefile_source64+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <sys/stat.h>
+int
+main ()
+{
+char *p = (char *)open64;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_cv_flag__largefile_source64=no
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#define _LARGEFILE_SOURCE64 1
+#include <sys/stat.h>
+int
+main ()
+{
+char *p = (char *)open64;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_cv_flag__largefile_source64=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+tcl_cv_flag__largefile_source64=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+
+    if test "x${tcl_cv_flag__largefile_source64}" = "xyes" ; then
+
+cat >>confdefs.h <<\_ACEOF
+#define _LARGEFILE_SOURCE64 1
+_ACEOF
+
+	tcl_flags="$tcl_flags _LARGEFILE_SOURCE64"
+    fi
+
+    if test "x${tcl_flags}" = "x" ; then
+	echo "$as_me:$LINENO: result: none" >&5
+echo "${ECHO_T}none" >&6
+    else
+	echo "$as_me:$LINENO: result: ${tcl_flags}" >&5
+echo "${ECHO_T}${tcl_flags}" >&6
+    fi
+
+
+
+    echo "$as_me:$LINENO: checking for 64-bit integer type" >&5
+echo $ECHO_N "checking for 64-bit integer type... $ECHO_C" >&6
+    if test "${tcl_cv_type_64bit+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+	tcl_cv_type_64bit=none
+	# See if the compiler knows natively about __int64
+	cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+int
+main ()
+{
+__int64 value = (__int64) 0;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_type_64bit=__int64
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+tcl_type_64bit="long long"
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+	# See if we should use long anyway  Note that we substitute in the
+	# type that is our current guess for a 64-bit type inside this check
+	# program, so it should be modified only carefully...
+        cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+int
+main ()
+{
+switch (0) {
+            case 1: case (sizeof(${tcl_type_64bit})==sizeof(long)): ;
+        }
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_cv_type_64bit=${tcl_type_64bit}
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+
+    if test "${tcl_cv_type_64bit}" = none ; then
+
+cat >>confdefs.h <<\_ACEOF
+#define TCL_WIDE_INT_IS_LONG 1
+_ACEOF
+
+	echo "$as_me:$LINENO: result: using long" >&5
+echo "${ECHO_T}using long" >&6
+    else
+
+cat >>confdefs.h <<_ACEOF
+#define TCL_WIDE_INT_TYPE ${tcl_cv_type_64bit}
+_ACEOF
+
+	echo "$as_me:$LINENO: result: ${tcl_cv_type_64bit}" >&5
+echo "${ECHO_T}${tcl_cv_type_64bit}" >&6
+
+	# Now check for auxiliary declarations
+	echo "$as_me:$LINENO: checking for struct dirent64" >&5
+echo $ECHO_N "checking for struct dirent64... $ECHO_C" >&6
+if test "${tcl_cv_struct_dirent64+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+	    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <sys/types.h>
+#include <dirent.h>
+int
+main ()
+{
+struct dirent64 p;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_cv_struct_dirent64=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+tcl_cv_struct_dirent64=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $tcl_cv_struct_dirent64" >&5
+echo "${ECHO_T}$tcl_cv_struct_dirent64" >&6
+	if test "x${tcl_cv_struct_dirent64}" = "xyes" ; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_STRUCT_DIRENT64 1
+_ACEOF
+
+	fi
+
+	echo "$as_me:$LINENO: checking for DIR64" >&5
+echo $ECHO_N "checking for DIR64... $ECHO_C" >&6
+if test "${tcl_cv_DIR64+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+	    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <sys/types.h>
+#include <dirent.h>
+int
+main ()
+{
+struct dirent64 *p; DIR64 d = opendir64(".");
+            p = readdir64(d); rewinddir64(d); closedir64(d);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_cv_DIR64=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+tcl_cv_DIR64=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $tcl_cv_DIR64" >&5
+echo "${ECHO_T}$tcl_cv_DIR64" >&6
+	if test "x${tcl_cv_DIR64}" = "xyes" ; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_DIR64 1
+_ACEOF
+
+	fi
+
+	echo "$as_me:$LINENO: checking for struct stat64" >&5
+echo $ECHO_N "checking for struct stat64... $ECHO_C" >&6
+if test "${tcl_cv_struct_stat64+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+	    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <sys/stat.h>
+int
+main ()
+{
+struct stat64 p;
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_cv_struct_stat64=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+tcl_cv_struct_stat64=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $tcl_cv_struct_stat64" >&5
+echo "${ECHO_T}$tcl_cv_struct_stat64" >&6
+	if test "x${tcl_cv_struct_stat64}" = "xyes" ; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_STRUCT_STAT64 1
+_ACEOF
+
+	fi
+
+
+
+for ac_func in open64 lseek64
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); 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 $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+	echo "$as_me:$LINENO: checking for off64_t" >&5
+echo $ECHO_N "checking for off64_t... $ECHO_C" >&6
+	if test "${tcl_cv_type_off64_t+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+	    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <sys/types.h>
+int
+main ()
+{
+off64_t offset;
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_cv_type_off64_t=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+tcl_cv_type_off64_t=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+
+			if test "x${tcl_cv_type_off64_t}" = "xyes" && \
+	        test "x${ac_cv_func_lseek64}" = "xyes" && \
+	        test "x${ac_cv_func_open64}" = "xyes" ; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_TYPE_OFF64_T 1
+_ACEOF
+
+	    echo "$as_me:$LINENO: result: yes" >&5
+echo "${ECHO_T}yes" >&6
+	else
+	    echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+	fi
+    fi
+
+
+#--------------------------------------------------------------------
+#	Check endianness because we can optimize comparisons of
+#	Tcl_UniChar strings to memcmp on big-endian systems.
+#--------------------------------------------------------------------
+
+echo "$as_me:$LINENO: checking whether byte ordering is bigendian" >&5
+echo $ECHO_N "checking whether byte ordering is bigendian... $ECHO_C" >&6
+if test "${ac_cv_c_bigendian+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  # See if sys/param.h defines the BYTE_ORDER macro.
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <sys/types.h>
+#include <sys/param.h>
+
+int
+main ()
+{
+#if !BYTE_ORDER || !BIG_ENDIAN || !LITTLE_ENDIAN
+ bogus endian macros
+#endif
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  # It does; now see whether it defined to BIG_ENDIAN or not.
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <sys/types.h>
+#include <sys/param.h>
+
+int
+main ()
+{
+#if BYTE_ORDER != BIG_ENDIAN
+ not big endian
+#endif
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_c_bigendian=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_c_bigendian=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+# It does not; compile a test program.
+if test "$cross_compiling" = yes; then
+  # try to guess the endianness by grepping values into an object file
+  ac_cv_c_bigendian=unknown
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+short ascii_mm[] = { 0x4249, 0x4765, 0x6E44, 0x6961, 0x6E53, 0x7953, 0 };
+short ascii_ii[] = { 0x694C, 0x5454, 0x656C, 0x6E45, 0x6944, 0x6E61, 0 };
+void _ascii () { char *s = (char *) ascii_mm; s = (char *) ascii_ii; }
+short ebcdic_ii[] = { 0x89D3, 0xE3E3, 0x8593, 0x95C5, 0x89C4, 0x9581, 0 };
+short ebcdic_mm[] = { 0xC2C9, 0xC785, 0x95C4, 0x8981, 0x95E2, 0xA8E2, 0 };
+void _ebcdic () { char *s = (char *) ebcdic_mm; s = (char *) ebcdic_ii; }
+int
+main ()
+{
+ _ascii (); _ebcdic ();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  if grep BIGenDianSyS conftest.$ac_objext >/dev/null ; then
+  ac_cv_c_bigendian=yes
+fi
+if grep LiTTleEnDian conftest.$ac_objext >/dev/null ; then
+  if test "$ac_cv_c_bigendian" = unknown; then
+    ac_cv_c_bigendian=no
+  else
+    # finding both strings is unlikely to happen, but who knows?
+    ac_cv_c_bigendian=unknown
+  fi
+fi
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+int
+main ()
+{
+  /* Are we little or big endian?  From Harbison&Steele.  */
+  union
+  {
+    long l;
+    char c[sizeof (long)];
+  } u;
+  u.l = 1;
+  exit (u.c[sizeof (long) - 1] == 1);
+}
+_ACEOF
+rm -f conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && { ac_try='./conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_c_bigendian=no
+else
+  echo "$as_me: program exited with status $ac_status" >&5
+echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+( exit $ac_status )
+ac_cv_c_bigendian=yes
+fi
+rm -f core *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
+fi
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_c_bigendian" >&5
+echo "${ECHO_T}$ac_cv_c_bigendian" >&6
+case $ac_cv_c_bigendian in
+  yes)
+
+cat >>confdefs.h <<\_ACEOF
+#define WORDS_BIGENDIAN 1
+_ACEOF
+ ;;
+  no)
+     ;;
+  *)
+    { { echo "$as_me:$LINENO: error: unknown endianness
+presetting ac_cv_c_bigendian=no (or yes) will help" >&5
+echo "$as_me: error: unknown endianness
+presetting ac_cv_c_bigendian=no (or yes) will help" >&2;}
+   { (exit 1); exit 1; }; } ;;
+esac
+
+
+#--------------------------------------------------------------------
+#	Supply substitutes for missing POSIX library procedures, or
+#	set flags so Tcl uses alternate procedures.
+#--------------------------------------------------------------------
+
+# Check if Posix compliant getcwd exists, if not we'll use getwd.
+
+for ac_func in getcwd
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); 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 $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+else
+
+cat >>confdefs.h <<\_ACEOF
+#define USEGETWD 1
+_ACEOF
+
+fi
+done
+
+# Nb: if getcwd uses popen and pwd(1) (like SunOS 4) we should really
+# define USEGETWD even if the posix getcwd exists. Add a test ?
+
+
+
+
+
+for ac_func in mkstemp opendir strtol waitpid
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); 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 $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+else
+  case $LIBOBJS in
+    "$ac_func.$ac_objext"   | \
+  *" $ac_func.$ac_objext"   | \
+    "$ac_func.$ac_objext "* | \
+  *" $ac_func.$ac_objext "* ) ;;
+  *) LIBOBJS="$LIBOBJS $ac_func.$ac_objext" ;;
+esac
+
+fi
+done
+
+
+echo "$as_me:$LINENO: checking for strerror" >&5
+echo $ECHO_N "checking for strerror... $ECHO_C" >&6
+if test "${ac_cv_func_strerror+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define strerror to an innocuous variant, in case <limits.h> declares strerror.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define strerror innocuous_strerror
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char strerror (); 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 strerror
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char strerror ();
+/* 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_strerror) || defined (__stub___strerror)
+choke me
+#else
+char (*f) () = strerror;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != strerror;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_func_strerror=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_func_strerror=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_func_strerror" >&5
+echo "${ECHO_T}$ac_cv_func_strerror" >&6
+if test $ac_cv_func_strerror = yes; then
+  :
+else
+
+cat >>confdefs.h <<\_ACEOF
+#define NO_STRERROR 1
+_ACEOF
+
+fi
+
+echo "$as_me:$LINENO: checking for getwd" >&5
+echo $ECHO_N "checking for getwd... $ECHO_C" >&6
+if test "${ac_cv_func_getwd+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define getwd to an innocuous variant, in case <limits.h> declares getwd.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define getwd innocuous_getwd
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char getwd (); 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 getwd
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char getwd ();
+/* 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_getwd) || defined (__stub___getwd)
+choke me
+#else
+char (*f) () = getwd;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != getwd;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_func_getwd=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_func_getwd=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_func_getwd" >&5
+echo "${ECHO_T}$ac_cv_func_getwd" >&6
+if test $ac_cv_func_getwd = yes; then
+  :
+else
+
+cat >>confdefs.h <<\_ACEOF
+#define NO_GETWD 1
+_ACEOF
+
+fi
+
+echo "$as_me:$LINENO: checking for wait3" >&5
+echo $ECHO_N "checking for wait3... $ECHO_C" >&6
+if test "${ac_cv_func_wait3+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define wait3 to an innocuous variant, in case <limits.h> declares wait3.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define wait3 innocuous_wait3
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char wait3 (); 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 wait3
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char wait3 ();
+/* 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_wait3) || defined (__stub___wait3)
+choke me
+#else
+char (*f) () = wait3;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != wait3;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_func_wait3=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_func_wait3=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_func_wait3" >&5
+echo "${ECHO_T}$ac_cv_func_wait3" >&6
+if test $ac_cv_func_wait3 = yes; then
+  :
+else
+
+cat >>confdefs.h <<\_ACEOF
+#define NO_WAIT3 1
+_ACEOF
+
+fi
+
+echo "$as_me:$LINENO: checking for uname" >&5
+echo $ECHO_N "checking for uname... $ECHO_C" >&6
+if test "${ac_cv_func_uname+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define uname to an innocuous variant, in case <limits.h> declares uname.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define uname innocuous_uname
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char uname (); 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 uname
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char uname ();
+/* 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_uname) || defined (__stub___uname)
+choke me
+#else
+char (*f) () = uname;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != uname;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_func_uname=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_func_uname=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_func_uname" >&5
+echo "${ECHO_T}$ac_cv_func_uname" >&6
+if test $ac_cv_func_uname = yes; then
+  :
+else
+
+cat >>confdefs.h <<\_ACEOF
+#define NO_UNAME 1
+_ACEOF
+
+fi
+
+
+if test "`uname -s`" = "Darwin" && test "${TCL_THREADS}" = 1 && \
+	test "`uname -r | awk -F. '{print $1}'`" -lt 7; then
+    # prior to Darwin 7, realpath is not threadsafe, so don't
+    # use it when threads are enabled, c.f. bug # 711232
+    ac_cv_func_realpath=no
+fi
+echo "$as_me:$LINENO: checking for realpath" >&5
+echo $ECHO_N "checking for realpath... $ECHO_C" >&6
+if test "${ac_cv_func_realpath+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define realpath to an innocuous variant, in case <limits.h> declares realpath.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define realpath innocuous_realpath
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char realpath (); 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 realpath
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char realpath ();
+/* 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_realpath) || defined (__stub___realpath)
+choke me
+#else
+char (*f) () = realpath;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != realpath;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_func_realpath=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_func_realpath=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_func_realpath" >&5
+echo "${ECHO_T}$ac_cv_func_realpath" >&6
+if test $ac_cv_func_realpath = yes; then
+  :
+else
+
+cat >>confdefs.h <<\_ACEOF
+#define NO_REALPATH 1
+_ACEOF
+
+fi
+
+
+
+	NEED_FAKE_RFC2553=0
+
+
+
+
+for ac_func in getnameinfo getaddrinfo freeaddrinfo gai_strerror
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); 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 $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+else
+  NEED_FAKE_RFC2553=1
+fi
+done
+
+	echo "$as_me:$LINENO: checking for struct addrinfo" >&5
+echo $ECHO_N "checking for struct addrinfo... $ECHO_C" >&6
+if test "${ac_cv_type_struct_addrinfo+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <netdb.h>
+
+
+int
+main ()
+{
+if ((struct addrinfo *) 0)
+  return 0;
+if (sizeof (struct addrinfo))
+  return 0;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_type_struct_addrinfo=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_type_struct_addrinfo=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_type_struct_addrinfo" >&5
+echo "${ECHO_T}$ac_cv_type_struct_addrinfo" >&6
+if test $ac_cv_type_struct_addrinfo = yes; then
+
+cat >>confdefs.h <<_ACEOF
+#define HAVE_STRUCT_ADDRINFO 1
+_ACEOF
+
+
+else
+  NEED_FAKE_RFC2553=1
+fi
+echo "$as_me:$LINENO: checking for struct in6_addr" >&5
+echo $ECHO_N "checking for struct in6_addr... $ECHO_C" >&6
+if test "${ac_cv_type_struct_in6_addr+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <netdb.h>
+
+
+int
+main ()
+{
+if ((struct in6_addr *) 0)
+  return 0;
+if (sizeof (struct in6_addr))
+  return 0;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_type_struct_in6_addr=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_type_struct_in6_addr=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_type_struct_in6_addr" >&5
+echo "${ECHO_T}$ac_cv_type_struct_in6_addr" >&6
+if test $ac_cv_type_struct_in6_addr = yes; then
+
+cat >>confdefs.h <<_ACEOF
+#define HAVE_STRUCT_IN6_ADDR 1
+_ACEOF
+
+
+else
+  NEED_FAKE_RFC2553=1
+fi
+echo "$as_me:$LINENO: checking for struct sockaddr_in6" >&5
+echo $ECHO_N "checking for struct sockaddr_in6... $ECHO_C" >&6
+if test "${ac_cv_type_struct_sockaddr_in6+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <netdb.h>
+
+
+int
+main ()
+{
+if ((struct sockaddr_in6 *) 0)
+  return 0;
+if (sizeof (struct sockaddr_in6))
+  return 0;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_type_struct_sockaddr_in6=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_type_struct_sockaddr_in6=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_type_struct_sockaddr_in6" >&5
+echo "${ECHO_T}$ac_cv_type_struct_sockaddr_in6" >&6
+if test $ac_cv_type_struct_sockaddr_in6 = yes; then
+
+cat >>confdefs.h <<_ACEOF
+#define HAVE_STRUCT_SOCKADDR_IN6 1
+_ACEOF
+
+
+else
+  NEED_FAKE_RFC2553=1
+fi
+echo "$as_me:$LINENO: checking for struct sockaddr_storage" >&5
+echo $ECHO_N "checking for struct sockaddr_storage... $ECHO_C" >&6
+if test "${ac_cv_type_struct_sockaddr_storage+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <netdb.h>
+
+
+int
+main ()
+{
+if ((struct sockaddr_storage *) 0)
+  return 0;
+if (sizeof (struct sockaddr_storage))
+  return 0;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_type_struct_sockaddr_storage=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_type_struct_sockaddr_storage=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_type_struct_sockaddr_storage" >&5
+echo "${ECHO_T}$ac_cv_type_struct_sockaddr_storage" >&6
+if test $ac_cv_type_struct_sockaddr_storage = yes; then
+
+cat >>confdefs.h <<_ACEOF
+#define HAVE_STRUCT_SOCKADDR_STORAGE 1
+_ACEOF
+
+
+else
+  NEED_FAKE_RFC2553=1
+fi
+
+if test "x$NEED_FAKE_RFC2553" = "x1"; then
+
+cat >>confdefs.h <<\_ACEOF
+#define NEED_FAKE_RFC2553 1
+_ACEOF
+
+   case $LIBOBJS in
+    "fake-rfc2553.$ac_objext"   | \
+  *" fake-rfc2553.$ac_objext"   | \
+    "fake-rfc2553.$ac_objext "* | \
+  *" fake-rfc2553.$ac_objext "* ) ;;
+  *) LIBOBJS="$LIBOBJS fake-rfc2553.$ac_objext" ;;
+esac
+
+   echo "$as_me:$LINENO: checking for strlcpy" >&5
+echo $ECHO_N "checking for strlcpy... $ECHO_C" >&6
+if test "${ac_cv_func_strlcpy+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define strlcpy to an innocuous variant, in case <limits.h> declares strlcpy.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define strlcpy innocuous_strlcpy
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char strlcpy (); 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 strlcpy
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char strlcpy ();
+/* 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_strlcpy) || defined (__stub___strlcpy)
+choke me
+#else
+char (*f) () = strlcpy;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != strlcpy;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_func_strlcpy=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_func_strlcpy=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_func_strlcpy" >&5
+echo "${ECHO_T}$ac_cv_func_strlcpy" >&6
+
+fi
+
+
+#--------------------------------------------------------------------
+#	Look for thread-safe variants of some library functions.
+#--------------------------------------------------------------------
+
+if test "${TCL_THREADS}" = 1; then
+    echo "$as_me:$LINENO: checking for getpwuid_r" >&5
+echo $ECHO_N "checking for getpwuid_r... $ECHO_C" >&6
+if test "${ac_cv_func_getpwuid_r+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define getpwuid_r to an innocuous variant, in case <limits.h> declares getpwuid_r.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define getpwuid_r innocuous_getpwuid_r
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char getpwuid_r (); 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 getpwuid_r
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char getpwuid_r ();
+/* 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_getpwuid_r) || defined (__stub___getpwuid_r)
+choke me
+#else
+char (*f) () = getpwuid_r;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != getpwuid_r;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_func_getpwuid_r=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_func_getpwuid_r=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_func_getpwuid_r" >&5
+echo "${ECHO_T}$ac_cv_func_getpwuid_r" >&6
+if test $ac_cv_func_getpwuid_r = yes; then
+
+    echo "$as_me:$LINENO: checking for getpwuid_r with 5 args" >&5
+echo $ECHO_N "checking for getpwuid_r with 5 args... $ECHO_C" >&6
+if test "${tcl_cv_api_getpwuid_r_5+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+	#include <sys/types.h>
+	#include <pwd.h>
+
+int
+main ()
+{
+
+	uid_t uid;
+	struct passwd pw, *pwp;
+	char buf[512];
+	int buflen = 512;
+
+	(void) getpwuid_r(uid, &pw, buf, buflen, &pwp);
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_cv_api_getpwuid_r_5=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+tcl_cv_api_getpwuid_r_5=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $tcl_cv_api_getpwuid_r_5" >&5
+echo "${ECHO_T}$tcl_cv_api_getpwuid_r_5" >&6
+    tcl_ok=$tcl_cv_api_getpwuid_r_5
+    if test "$tcl_ok" = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_GETPWUID_R_5 1
+_ACEOF
+
+    else
+	echo "$as_me:$LINENO: checking for getpwuid_r with 4 args" >&5
+echo $ECHO_N "checking for getpwuid_r with 4 args... $ECHO_C" >&6
+if test "${tcl_cv_api_getpwuid_r_4+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+	cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+	    #include <sys/types.h>
+	    #include <pwd.h>
+
+int
+main ()
+{
+
+	    uid_t uid;
+	    struct passwd pw;
+	    char buf[512];
+	    int buflen = 512;
+
+	    (void)getpwnam_r(uid, &pw, buf, buflen);
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_cv_api_getpwuid_r_4=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+tcl_cv_api_getpwuid_r_4=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $tcl_cv_api_getpwuid_r_4" >&5
+echo "${ECHO_T}$tcl_cv_api_getpwuid_r_4" >&6
+	tcl_ok=$tcl_cv_api_getpwuid_r_4
+	if test "$tcl_ok" = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_GETPWUID_R_4 1
+_ACEOF
+
+	fi
+    fi
+    if test "$tcl_ok" = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_GETPWUID_R 1
+_ACEOF
+
+    fi
+
+fi
+
+    echo "$as_me:$LINENO: checking for getpwnam_r" >&5
+echo $ECHO_N "checking for getpwnam_r... $ECHO_C" >&6
+if test "${ac_cv_func_getpwnam_r+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define getpwnam_r to an innocuous variant, in case <limits.h> declares getpwnam_r.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define getpwnam_r innocuous_getpwnam_r
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char getpwnam_r (); 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 getpwnam_r
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char getpwnam_r ();
+/* 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_getpwnam_r) || defined (__stub___getpwnam_r)
+choke me
+#else
+char (*f) () = getpwnam_r;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != getpwnam_r;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_func_getpwnam_r=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_func_getpwnam_r=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_func_getpwnam_r" >&5
+echo "${ECHO_T}$ac_cv_func_getpwnam_r" >&6
+if test $ac_cv_func_getpwnam_r = yes; then
+
+    echo "$as_me:$LINENO: checking for getpwnam_r with 5 args" >&5
+echo $ECHO_N "checking for getpwnam_r with 5 args... $ECHO_C" >&6
+if test "${tcl_cv_api_getpwnam_r_5+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+	#include <sys/types.h>
+	#include <pwd.h>
+
+int
+main ()
+{
+
+	char *name;
+	struct passwd pw, *pwp;
+	char buf[512];
+	int buflen = 512;
+
+	(void) getpwnam_r(name, &pw, buf, buflen, &pwp);
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_cv_api_getpwnam_r_5=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+tcl_cv_api_getpwnam_r_5=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $tcl_cv_api_getpwnam_r_5" >&5
+echo "${ECHO_T}$tcl_cv_api_getpwnam_r_5" >&6
+    tcl_ok=$tcl_cv_api_getpwnam_r_5
+    if test "$tcl_ok" = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_GETPWNAM_R_5 1
+_ACEOF
+
+    else
+	echo "$as_me:$LINENO: checking for getpwnam_r with 4 args" >&5
+echo $ECHO_N "checking for getpwnam_r with 4 args... $ECHO_C" >&6
+if test "${tcl_cv_api_getpwnam_r_4+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+	cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+	    #include <sys/types.h>
+	    #include <pwd.h>
+
+int
+main ()
+{
+
+	    char *name;
+	    struct passwd pw;
+	    char buf[512];
+	    int buflen = 512;
+
+	    (void)getpwnam_r(name, &pw, buf, buflen);
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_cv_api_getpwnam_r_4=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+tcl_cv_api_getpwnam_r_4=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $tcl_cv_api_getpwnam_r_4" >&5
+echo "${ECHO_T}$tcl_cv_api_getpwnam_r_4" >&6
+	tcl_ok=$tcl_cv_api_getpwnam_r_4
+	if test "$tcl_ok" = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_GETPWNAM_R_4 1
+_ACEOF
+
+	fi
+    fi
+    if test "$tcl_ok" = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_GETPWNAM_R 1
+_ACEOF
+
+    fi
+
+fi
+
+    echo "$as_me:$LINENO: checking for getgrgid_r" >&5
+echo $ECHO_N "checking for getgrgid_r... $ECHO_C" >&6
+if test "${ac_cv_func_getgrgid_r+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define getgrgid_r to an innocuous variant, in case <limits.h> declares getgrgid_r.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define getgrgid_r innocuous_getgrgid_r
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char getgrgid_r (); 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 getgrgid_r
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char getgrgid_r ();
+/* 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_getgrgid_r) || defined (__stub___getgrgid_r)
+choke me
+#else
+char (*f) () = getgrgid_r;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != getgrgid_r;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_func_getgrgid_r=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_func_getgrgid_r=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_func_getgrgid_r" >&5
+echo "${ECHO_T}$ac_cv_func_getgrgid_r" >&6
+if test $ac_cv_func_getgrgid_r = yes; then
+
+    echo "$as_me:$LINENO: checking for getgrgid_r with 5 args" >&5
+echo $ECHO_N "checking for getgrgid_r with 5 args... $ECHO_C" >&6
+if test "${tcl_cv_api_getgrgid_r_5+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+	#include <sys/types.h>
+	#include <grp.h>
+
+int
+main ()
+{
+
+	gid_t gid;
+	struct group gr, *grp;
+	char buf[512];
+	int buflen = 512;
+
+	(void) getgrgid_r(gid, &gr, buf, buflen, &grp);
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_cv_api_getgrgid_r_5=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+tcl_cv_api_getgrgid_r_5=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $tcl_cv_api_getgrgid_r_5" >&5
+echo "${ECHO_T}$tcl_cv_api_getgrgid_r_5" >&6
+    tcl_ok=$tcl_cv_api_getgrgid_r_5
+    if test "$tcl_ok" = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_GETGRGID_R_5 1
+_ACEOF
+
+    else
+	echo "$as_me:$LINENO: checking for getgrgid_r with 4 args" >&5
+echo $ECHO_N "checking for getgrgid_r with 4 args... $ECHO_C" >&6
+if test "${tcl_cv_api_getgrgid_r_4+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+	cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+	    #include <sys/types.h>
+	    #include <grp.h>
+
+int
+main ()
+{
+
+	    gid_t gid;
+	    struct group gr;
+	    char buf[512];
+	    int buflen = 512;
+
+	    (void)getgrgid_r(gid, &gr, buf, buflen);
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_cv_api_getgrgid_r_4=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+tcl_cv_api_getgrgid_r_4=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $tcl_cv_api_getgrgid_r_4" >&5
+echo "${ECHO_T}$tcl_cv_api_getgrgid_r_4" >&6
+	tcl_ok=$tcl_cv_api_getgrgid_r_4
+	if test "$tcl_ok" = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_GETGRGID_R_4 1
+_ACEOF
+
+	fi
+    fi
+    if test "$tcl_ok" = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_GETGRGID_R 1
+_ACEOF
+
+    fi
+
+fi
+
+    echo "$as_me:$LINENO: checking for getgrnam_r" >&5
+echo $ECHO_N "checking for getgrnam_r... $ECHO_C" >&6
+if test "${ac_cv_func_getgrnam_r+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define getgrnam_r to an innocuous variant, in case <limits.h> declares getgrnam_r.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define getgrnam_r innocuous_getgrnam_r
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char getgrnam_r (); 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 getgrnam_r
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char getgrnam_r ();
+/* 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_getgrnam_r) || defined (__stub___getgrnam_r)
+choke me
+#else
+char (*f) () = getgrnam_r;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != getgrnam_r;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_func_getgrnam_r=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_func_getgrnam_r=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_func_getgrnam_r" >&5
+echo "${ECHO_T}$ac_cv_func_getgrnam_r" >&6
+if test $ac_cv_func_getgrnam_r = yes; then
+
+    echo "$as_me:$LINENO: checking for getgrnam_r with 5 args" >&5
+echo $ECHO_N "checking for getgrnam_r with 5 args... $ECHO_C" >&6
+if test "${tcl_cv_api_getgrnam_r_5+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+	#include <sys/types.h>
+	#include <grp.h>
+
+int
+main ()
+{
+
+	char *name;
+	struct group gr, *grp;
+	char buf[512];
+	int buflen = 512;
+
+	(void) getgrnam_r(name, &gr, buf, buflen, &grp);
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_cv_api_getgrnam_r_5=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+tcl_cv_api_getgrnam_r_5=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $tcl_cv_api_getgrnam_r_5" >&5
+echo "${ECHO_T}$tcl_cv_api_getgrnam_r_5" >&6
+    tcl_ok=$tcl_cv_api_getgrnam_r_5
+    if test "$tcl_ok" = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_GETGRNAM_R_5 1
+_ACEOF
+
+    else
+	echo "$as_me:$LINENO: checking for getgrnam_r with 4 args" >&5
+echo $ECHO_N "checking for getgrnam_r with 4 args... $ECHO_C" >&6
+if test "${tcl_cv_api_getgrnam_r_4+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+	cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+	    #include <sys/types.h>
+	    #include <grp.h>
+
+int
+main ()
+{
+
+	    char *name;
+	    struct group gr;
+	    char buf[512];
+	    int buflen = 512;
+
+	    (void)getgrnam_r(name, &gr, buf, buflen);
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_cv_api_getgrnam_r_4=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+tcl_cv_api_getgrnam_r_4=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $tcl_cv_api_getgrnam_r_4" >&5
+echo "${ECHO_T}$tcl_cv_api_getgrnam_r_4" >&6
+	tcl_ok=$tcl_cv_api_getgrnam_r_4
+	if test "$tcl_ok" = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_GETGRNAM_R_4 1
+_ACEOF
+
+	fi
+    fi
+    if test "$tcl_ok" = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_GETGRNAM_R 1
+_ACEOF
+
+    fi
+
+fi
+
+    if test "`uname -s`" = "Darwin" && \
+	    test "`uname -r | awk -F. '{print $1}'`" -gt 5; then
+	# Starting with Darwin 6 (Mac OSX 10.2), gethostbyX
+	# are actually MT-safe as they always return pointers
+	# from TSD instead of static storage.
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_MTSAFE_GETHOSTBYNAME 1
+_ACEOF
+
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_MTSAFE_GETHOSTBYADDR 1
+_ACEOF
+
+
+    elif test "`uname -s`" = "HP-UX" && \
+	      test "`uname -r|sed -e 's|B\.||' -e 's|\..*$||'`" -gt 10; then
+        # Starting with HPUX 11.00 (we believe), gethostbyX
+        # are actually MT-safe as they always return pointers
+	# from TSD instead of static storage.
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_MTSAFE_GETHOSTBYNAME 1
+_ACEOF
+
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_MTSAFE_GETHOSTBYADDR 1
+_ACEOF
+
+
+    else
+	echo "$as_me:$LINENO: checking for gethostbyname_r" >&5
+echo $ECHO_N "checking for gethostbyname_r... $ECHO_C" >&6
+if test "${ac_cv_func_gethostbyname_r+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define gethostbyname_r to an innocuous variant, in case <limits.h> declares gethostbyname_r.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define gethostbyname_r innocuous_gethostbyname_r
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char gethostbyname_r (); 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 gethostbyname_r
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char gethostbyname_r ();
+/* 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_gethostbyname_r) || defined (__stub___gethostbyname_r)
+choke me
+#else
+char (*f) () = gethostbyname_r;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != gethostbyname_r;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_func_gethostbyname_r=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_func_gethostbyname_r=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_func_gethostbyname_r" >&5
+echo "${ECHO_T}$ac_cv_func_gethostbyname_r" >&6
+if test $ac_cv_func_gethostbyname_r = yes; then
+
+    echo "$as_me:$LINENO: checking for gethostbyname_r with 6 args" >&5
+echo $ECHO_N "checking for gethostbyname_r with 6 args... $ECHO_C" >&6
+if test "${tcl_cv_api_gethostbyname_r_6+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+	#include <netdb.h>
+
+int
+main ()
+{
+
+	char *name;
+	struct hostent *he, *res;
+	char buffer[2048];
+	int buflen = 2048;
+	int h_errnop;
+
+	(void) gethostbyname_r(name, he, buffer, buflen, &res, &h_errnop);
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_cv_api_gethostbyname_r_6=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+tcl_cv_api_gethostbyname_r_6=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $tcl_cv_api_gethostbyname_r_6" >&5
+echo "${ECHO_T}$tcl_cv_api_gethostbyname_r_6" >&6
+    tcl_ok=$tcl_cv_api_gethostbyname_r_6
+    if test "$tcl_ok" = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_GETHOSTBYNAME_R_6 1
+_ACEOF
+
+    else
+	echo "$as_me:$LINENO: checking for gethostbyname_r with 5 args" >&5
+echo $ECHO_N "checking for gethostbyname_r with 5 args... $ECHO_C" >&6
+if test "${tcl_cv_api_gethostbyname_r_5+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+	cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+	    #include <netdb.h>
+
+int
+main ()
+{
+
+	    char *name;
+	    struct hostent *he;
+	    char buffer[2048];
+	    int buflen = 2048;
+	    int h_errnop;
+
+	    (void) gethostbyname_r(name, he, buffer, buflen, &h_errnop);
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_cv_api_gethostbyname_r_5=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+tcl_cv_api_gethostbyname_r_5=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $tcl_cv_api_gethostbyname_r_5" >&5
+echo "${ECHO_T}$tcl_cv_api_gethostbyname_r_5" >&6
+	tcl_ok=$tcl_cv_api_gethostbyname_r_5
+	if test "$tcl_ok" = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_GETHOSTBYNAME_R_5 1
+_ACEOF
+
+	else
+	    echo "$as_me:$LINENO: checking for gethostbyname_r with 3 args" >&5
+echo $ECHO_N "checking for gethostbyname_r with 3 args... $ECHO_C" >&6
+if test "${tcl_cv_api_gethostbyname_r_3+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+	    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+		#include <netdb.h>
+
+int
+main ()
+{
+
+		char *name;
+		struct hostent *he;
+		struct hostent_data data;
+
+		(void) gethostbyname_r(name, he, &data);
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_cv_api_gethostbyname_r_3=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+tcl_cv_api_gethostbyname_r_3=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $tcl_cv_api_gethostbyname_r_3" >&5
+echo "${ECHO_T}$tcl_cv_api_gethostbyname_r_3" >&6
+	    tcl_ok=$tcl_cv_api_gethostbyname_r_3
+	    if test "$tcl_ok" = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_GETHOSTBYNAME_R_3 1
+_ACEOF
+
+	    fi
+	fi
+    fi
+    if test "$tcl_ok" = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_GETHOSTBYNAME_R 1
+_ACEOF
+
+    fi
+
+fi
+
+	echo "$as_me:$LINENO: checking for gethostbyaddr_r" >&5
+echo $ECHO_N "checking for gethostbyaddr_r... $ECHO_C" >&6
+if test "${ac_cv_func_gethostbyaddr_r+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define gethostbyaddr_r to an innocuous variant, in case <limits.h> declares gethostbyaddr_r.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define gethostbyaddr_r innocuous_gethostbyaddr_r
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char gethostbyaddr_r (); 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 gethostbyaddr_r
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char gethostbyaddr_r ();
+/* 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_gethostbyaddr_r) || defined (__stub___gethostbyaddr_r)
+choke me
+#else
+char (*f) () = gethostbyaddr_r;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != gethostbyaddr_r;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_func_gethostbyaddr_r=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_func_gethostbyaddr_r=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_func_gethostbyaddr_r" >&5
+echo "${ECHO_T}$ac_cv_func_gethostbyaddr_r" >&6
+if test $ac_cv_func_gethostbyaddr_r = yes; then
+
+    echo "$as_me:$LINENO: checking for gethostbyaddr_r with 7 args" >&5
+echo $ECHO_N "checking for gethostbyaddr_r with 7 args... $ECHO_C" >&6
+if test "${tcl_cv_api_gethostbyaddr_r_7+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+	#include <netdb.h>
+
+int
+main ()
+{
+
+	char *addr;
+	int length;
+	int type;
+	struct hostent *result;
+	char buffer[2048];
+	int buflen = 2048;
+	int h_errnop;
+
+	(void) gethostbyaddr_r(addr, length, type, result, buffer, buflen,
+			       &h_errnop);
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_cv_api_gethostbyaddr_r_7=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+tcl_cv_api_gethostbyaddr_r_7=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $tcl_cv_api_gethostbyaddr_r_7" >&5
+echo "${ECHO_T}$tcl_cv_api_gethostbyaddr_r_7" >&6
+    tcl_ok=$tcl_cv_api_gethostbyaddr_r_7
+    if test "$tcl_ok" = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_GETHOSTBYADDR_R_7 1
+_ACEOF
+
+    else
+	echo "$as_me:$LINENO: checking for gethostbyaddr_r with 8 args" >&5
+echo $ECHO_N "checking for gethostbyaddr_r with 8 args... $ECHO_C" >&6
+if test "${tcl_cv_api_gethostbyaddr_r_8+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+	cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+	    #include <netdb.h>
+
+int
+main ()
+{
+
+	    char *addr;
+	    int length;
+	    int type;
+	    struct hostent *result, *resultp;
+	    char buffer[2048];
+	    int buflen = 2048;
+	    int h_errnop;
+
+	    (void) gethostbyaddr_r(addr, length, type, result, buffer, buflen,
+				   &resultp, &h_errnop);
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_cv_api_gethostbyaddr_r_8=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+tcl_cv_api_gethostbyaddr_r_8=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $tcl_cv_api_gethostbyaddr_r_8" >&5
+echo "${ECHO_T}$tcl_cv_api_gethostbyaddr_r_8" >&6
+	tcl_ok=$tcl_cv_api_gethostbyaddr_r_8
+	if test "$tcl_ok" = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_GETHOSTBYADDR_R_8 1
+_ACEOF
+
+	fi
+    fi
+    if test "$tcl_ok" = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_GETHOSTBYADDR_R 1
+_ACEOF
+
+    fi
+
+fi
+
+    fi
+fi
+
+#---------------------------------------------------------------------------
+#	Check for serial port interface.
+#
+#	termios.h is present on all POSIX systems.
+#	sys/ioctl.h is almost always present, though what it contains
+#	is system-specific.
+#	sys/modem.h is needed on HP-UX.
+#---------------------------------------------------------------------------
+
+
+for ac_header in termios.h
+do
+as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking $ac_header usability" >&5
+echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <$ac_header>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_header_compiler=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
+
+# Is the header present?
+echo "$as_me:$LINENO: checking $ac_header presence" >&5
+echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <$ac_header>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
+echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ------------------------------ ##
+## Report this to the tcl lists.  ##
+## ------------------------------ ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  eval "$as_ac_Header=\$ac_header_preproc"
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+
+fi
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+
+done
+
+
+for ac_header in sys/ioctl.h
+do
+as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking $ac_header usability" >&5
+echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <$ac_header>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_header_compiler=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
+
+# Is the header present?
+echo "$as_me:$LINENO: checking $ac_header presence" >&5
+echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <$ac_header>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
+echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ------------------------------ ##
+## Report this to the tcl lists.  ##
+## ------------------------------ ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  eval "$as_ac_Header=\$ac_header_preproc"
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+
+fi
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+
+done
+
+
+for ac_header in sys/modem.h
+do
+as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking $ac_header usability" >&5
+echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <$ac_header>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_header_compiler=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
+
+# Is the header present?
+echo "$as_me:$LINENO: checking $ac_header presence" >&5
+echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <$ac_header>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
+echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ------------------------------ ##
+## Report this to the tcl lists.  ##
+## ------------------------------ ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  eval "$as_ac_Header=\$ac_header_preproc"
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+
+fi
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+
+done
+
+
+#--------------------------------------------------------------------
+#	Include sys/select.h if it exists and if it supplies things
+#	that appear to be useful and aren't already in sys/types.h.
+#	This appears to be true only on the RS/6000 under AIX.  Some
+#	systems like OSF/1 have a sys/select.h that's of no use, and
+#	other systems like SCO UNIX have a sys/select.h that's
+#	pernicious.  If "fd_set" isn't defined anywhere then set a
+#	special flag.
+#--------------------------------------------------------------------
+
+echo "$as_me:$LINENO: checking for fd_set in sys/types" >&5
+echo $ECHO_N "checking for fd_set in sys/types... $ECHO_C" >&6
+if test "${tcl_cv_type_fd_set+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <sys/types.h>
+int
+main ()
+{
+fd_set readMask, writeMask;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_cv_type_fd_set=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+tcl_cv_type_fd_set=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $tcl_cv_type_fd_set" >&5
+echo "${ECHO_T}$tcl_cv_type_fd_set" >&6
+tcl_ok=$tcl_cv_type_fd_set
+if test $tcl_ok = no; then
+    echo "$as_me:$LINENO: checking for fd_mask in sys/select" >&5
+echo $ECHO_N "checking for fd_mask in sys/select... $ECHO_C" >&6
+if test "${tcl_cv_grep_fd_mask+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+	cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <sys/select.h>
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "fd_mask" >/dev/null 2>&1; then
+  tcl_cv_grep_fd_mask=present
+else
+  tcl_cv_grep_fd_mask=missing
+fi
+rm -f conftest*
+
+fi
+echo "$as_me:$LINENO: result: $tcl_cv_grep_fd_mask" >&5
+echo "${ECHO_T}$tcl_cv_grep_fd_mask" >&6
+    if test $tcl_cv_grep_fd_mask = present; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_SYS_SELECT_H 1
+_ACEOF
+
+	tcl_ok=yes
+    fi
+fi
+if test $tcl_ok = no; then
+
+cat >>confdefs.h <<\_ACEOF
+#define NO_FD_SET 1
+_ACEOF
+
+fi
+
+#------------------------------------------------------------------------------
+#       Find out all about time handling differences.
+#------------------------------------------------------------------------------
+
+
+
+for ac_header in sys/time.h
+do
+as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking $ac_header usability" >&5
+echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <$ac_header>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_header_compiler=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
+
+# Is the header present?
+echo "$as_me:$LINENO: checking $ac_header presence" >&5
+echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <$ac_header>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
+echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ------------------------------ ##
+## Report this to the tcl lists.  ##
+## ------------------------------ ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  eval "$as_ac_Header=\$ac_header_preproc"
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+
+fi
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+
+done
+
+    echo "$as_me:$LINENO: checking whether time.h and sys/time.h may both be included" >&5
+echo $ECHO_N "checking whether time.h and sys/time.h may both be included... $ECHO_C" >&6
+if test "${ac_cv_header_time+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <sys/types.h>
+#include <sys/time.h>
+#include <time.h>
+
+int
+main ()
+{
+if ((struct tm *) 0)
+return 0;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_header_time=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_header_time=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_time" >&5
+echo "${ECHO_T}$ac_cv_header_time" >&6
+if test $ac_cv_header_time = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define TIME_WITH_SYS_TIME 1
+_ACEOF
+
+fi
+
+
+
+
+
+for ac_func in gmtime_r localtime_r mktime
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); 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 $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+
+    echo "$as_me:$LINENO: checking tm_tzadj in struct tm" >&5
+echo $ECHO_N "checking tm_tzadj in struct tm... $ECHO_C" >&6
+if test "${tcl_cv_member_tm_tzadj+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+	cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <time.h>
+int
+main ()
+{
+struct tm tm; tm.tm_tzadj;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_cv_member_tm_tzadj=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+tcl_cv_member_tm_tzadj=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $tcl_cv_member_tm_tzadj" >&5
+echo "${ECHO_T}$tcl_cv_member_tm_tzadj" >&6
+    if test $tcl_cv_member_tm_tzadj = yes ; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_TM_TZADJ 1
+_ACEOF
+
+    fi
+
+    echo "$as_me:$LINENO: checking tm_gmtoff in struct tm" >&5
+echo $ECHO_N "checking tm_gmtoff in struct tm... $ECHO_C" >&6
+if test "${tcl_cv_member_tm_gmtoff+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+	cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <time.h>
+int
+main ()
+{
+struct tm tm; tm.tm_gmtoff;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_cv_member_tm_gmtoff=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+tcl_cv_member_tm_gmtoff=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $tcl_cv_member_tm_gmtoff" >&5
+echo "${ECHO_T}$tcl_cv_member_tm_gmtoff" >&6
+    if test $tcl_cv_member_tm_gmtoff = yes ; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_TM_GMTOFF 1
+_ACEOF
+
+    fi
+
+    #
+    # Its important to include time.h in this check, as some systems
+    # (like convex) have timezone functions, etc.
+    #
+    echo "$as_me:$LINENO: checking long timezone variable" >&5
+echo $ECHO_N "checking long timezone variable... $ECHO_C" >&6
+if test "${tcl_cv_timezone_long+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+	cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <time.h>
+int
+main ()
+{
+extern long timezone;
+	    timezone += 1;
+	    exit (0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_cv_timezone_long=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+tcl_cv_timezone_long=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $tcl_cv_timezone_long" >&5
+echo "${ECHO_T}$tcl_cv_timezone_long" >&6
+    if test $tcl_cv_timezone_long = yes ; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_TIMEZONE_VAR 1
+_ACEOF
+
+    else
+	#
+	# On some systems (eg IRIX 6.2), timezone is a time_t and not a long.
+	#
+	echo "$as_me:$LINENO: checking time_t timezone variable" >&5
+echo $ECHO_N "checking time_t timezone variable... $ECHO_C" >&6
+if test "${tcl_cv_timezone_time+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+	    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <time.h>
+int
+main ()
+{
+extern time_t timezone;
+		timezone += 1;
+		exit (0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_cv_timezone_time=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+tcl_cv_timezone_time=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $tcl_cv_timezone_time" >&5
+echo "${ECHO_T}$tcl_cv_timezone_time" >&6
+	if test $tcl_cv_timezone_time = yes ; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_TIMEZONE_VAR 1
+_ACEOF
+
+	fi
+    fi
+
+
+#--------------------------------------------------------------------
+#	Some systems (e.g., IRIX 4.0.5) lack some fields in struct stat. But
+#	we might be able to use fstatfs instead. Some systems (OpenBSD?) also
+#	lack blkcnt_t.
+#--------------------------------------------------------------------
+
+if test "$ac_cv_cygwin" != "yes"; then
+    echo "$as_me:$LINENO: checking for struct stat.st_blocks" >&5
+echo $ECHO_N "checking for struct stat.st_blocks... $ECHO_C" >&6
+if test "${ac_cv_member_struct_stat_st_blocks+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+int
+main ()
+{
+static struct stat ac_aggr;
+if (ac_aggr.st_blocks)
+return 0;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_member_struct_stat_st_blocks=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+int
+main ()
+{
+static struct stat ac_aggr;
+if (sizeof ac_aggr.st_blocks)
+return 0;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_member_struct_stat_st_blocks=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_member_struct_stat_st_blocks=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_member_struct_stat_st_blocks" >&5
+echo "${ECHO_T}$ac_cv_member_struct_stat_st_blocks" >&6
+if test $ac_cv_member_struct_stat_st_blocks = yes; then
+
+cat >>confdefs.h <<_ACEOF
+#define HAVE_STRUCT_STAT_ST_BLOCKS 1
+_ACEOF
+
+
+fi
+echo "$as_me:$LINENO: checking for struct stat.st_blksize" >&5
+echo $ECHO_N "checking for struct stat.st_blksize... $ECHO_C" >&6
+if test "${ac_cv_member_struct_stat_st_blksize+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+int
+main ()
+{
+static struct stat ac_aggr;
+if (ac_aggr.st_blksize)
+return 0;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_member_struct_stat_st_blksize=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+int
+main ()
+{
+static struct stat ac_aggr;
+if (sizeof ac_aggr.st_blksize)
+return 0;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_member_struct_stat_st_blksize=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_member_struct_stat_st_blksize=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_member_struct_stat_st_blksize" >&5
+echo "${ECHO_T}$ac_cv_member_struct_stat_st_blksize" >&6
+if test $ac_cv_member_struct_stat_st_blksize = yes; then
+
+cat >>confdefs.h <<_ACEOF
+#define HAVE_STRUCT_STAT_ST_BLKSIZE 1
+_ACEOF
+
+
+fi
+
+fi
+echo "$as_me:$LINENO: checking for blkcnt_t" >&5
+echo $ECHO_N "checking for blkcnt_t... $ECHO_C" >&6
+if test "${ac_cv_type_blkcnt_t+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+int
+main ()
+{
+if ((blkcnt_t *) 0)
+  return 0;
+if (sizeof (blkcnt_t))
+  return 0;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_type_blkcnt_t=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_type_blkcnt_t=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_type_blkcnt_t" >&5
+echo "${ECHO_T}$ac_cv_type_blkcnt_t" >&6
+if test $ac_cv_type_blkcnt_t = yes; then
+
+cat >>confdefs.h <<_ACEOF
+#define HAVE_BLKCNT_T 1
+_ACEOF
+
+
+fi
+
+echo "$as_me:$LINENO: checking for fstatfs" >&5
+echo $ECHO_N "checking for fstatfs... $ECHO_C" >&6
+if test "${ac_cv_func_fstatfs+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define fstatfs to an innocuous variant, in case <limits.h> declares fstatfs.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define fstatfs innocuous_fstatfs
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char fstatfs (); 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 fstatfs
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char fstatfs ();
+/* 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_fstatfs) || defined (__stub___fstatfs)
+choke me
+#else
+char (*f) () = fstatfs;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != fstatfs;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_func_fstatfs=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_func_fstatfs=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_func_fstatfs" >&5
+echo "${ECHO_T}$ac_cv_func_fstatfs" >&6
+if test $ac_cv_func_fstatfs = yes; then
+  :
+else
+
+cat >>confdefs.h <<\_ACEOF
+#define NO_FSTATFS 1
+_ACEOF
+
+fi
+
+
+#--------------------------------------------------------------------
+#       Some system have no memcmp or it does not work with 8 bit data, this
+#       checks it and add memcmp.o to LIBOBJS if needed
+#--------------------------------------------------------------------
+
+echo "$as_me:$LINENO: checking for working memcmp" >&5
+echo $ECHO_N "checking for working memcmp... $ECHO_C" >&6
+if test "${ac_cv_func_memcmp_working+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test "$cross_compiling" = yes; then
+  ac_cv_func_memcmp_working=no
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+int
+main ()
+{
+
+  /* Some versions of memcmp are not 8-bit clean.  */
+  char c0 = 0x40, c1 = 0x80, c2 = 0x81;
+  if (memcmp(&c0, &c2, 1) >= 0 || memcmp(&c1, &c2, 1) >= 0)
+    exit (1);
+
+  /* The Next x86 OpenStep bug shows up only when comparing 16 bytes
+     or more and with at least one buffer not starting on a 4-byte boundary.
+     William Lewis provided this test program.   */
+  {
+    char foo[21];
+    char bar[21];
+    int i;
+    for (i = 0; i < 4; i++)
+      {
+	char *a = foo + i;
+	char *b = bar + i;
+	strcpy (a, "--------01111111");
+	strcpy (b, "--------10000000");
+	if (memcmp (a, b, 16) >= 0)
+	  exit (1);
+      }
+    exit (0);
+  }
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && { ac_try='./conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_func_memcmp_working=yes
+else
+  echo "$as_me: program exited with status $ac_status" >&5
+echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+( exit $ac_status )
+ac_cv_func_memcmp_working=no
+fi
+rm -f core *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
+fi
+fi
+echo "$as_me:$LINENO: result: $ac_cv_func_memcmp_working" >&5
+echo "${ECHO_T}$ac_cv_func_memcmp_working" >&6
+test $ac_cv_func_memcmp_working = no && case $LIBOBJS in
+    "memcmp.$ac_objext"   | \
+  *" memcmp.$ac_objext"   | \
+    "memcmp.$ac_objext "* | \
+  *" memcmp.$ac_objext "* ) ;;
+  *) LIBOBJS="$LIBOBJS memcmp.$ac_objext" ;;
+esac
+
+
+
+#--------------------------------------------------------------------
+#       Some system like SunOS 4 and other BSD like systems have no memmove
+#       (we assume they have bcopy instead). {The replacement define is in
+#       compat/string.h}
+#--------------------------------------------------------------------
+
+echo "$as_me:$LINENO: checking for memmove" >&5
+echo $ECHO_N "checking for memmove... $ECHO_C" >&6
+if test "${ac_cv_func_memmove+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define memmove to an innocuous variant, in case <limits.h> declares memmove.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define memmove innocuous_memmove
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char memmove (); 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 memmove
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char memmove ();
+/* 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_memmove) || defined (__stub___memmove)
+choke me
+#else
+char (*f) () = memmove;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != memmove;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_func_memmove=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_func_memmove=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_func_memmove" >&5
+echo "${ECHO_T}$ac_cv_func_memmove" >&6
+if test $ac_cv_func_memmove = yes; then
+  :
+else
+
+
+cat >>confdefs.h <<\_ACEOF
+#define NO_MEMMOVE 1
+_ACEOF
+
+
+cat >>confdefs.h <<\_ACEOF
+#define NO_STRING_H 1
+_ACEOF
+
+fi
+
+
+#--------------------------------------------------------------------
+#	On some systems strstr is broken: it returns a pointer even even if
+#	the original string is empty.
+#--------------------------------------------------------------------
+
+
+    echo "$as_me:$LINENO: checking for strstr" >&5
+echo $ECHO_N "checking for strstr... $ECHO_C" >&6
+if test "${ac_cv_func_strstr+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define strstr to an innocuous variant, in case <limits.h> declares strstr.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define strstr innocuous_strstr
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char strstr (); 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 strstr
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char strstr ();
+/* 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_strstr) || defined (__stub___strstr)
+choke me
+#else
+char (*f) () = strstr;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != strstr;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_func_strstr=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_func_strstr=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_func_strstr" >&5
+echo "${ECHO_T}$ac_cv_func_strstr" >&6
+if test $ac_cv_func_strstr = yes; then
+  tcl_ok=1
+else
+  tcl_ok=0
+fi
+
+    if test "$tcl_ok" = 1; then
+	echo "$as_me:$LINENO: checking proper strstr implementation" >&5
+echo $ECHO_N "checking proper strstr implementation... $ECHO_C" >&6
+if test "${tcl_cv_strstr_unbroken+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test "$cross_compiling" = yes; then
+  tcl_cv_strstr_unbroken=unknown
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+int main() {
+    extern int strstr();
+    exit(strstr("\0test", "test") ? 1 : 0);
+}
+_ACEOF
+rm -f conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && { ac_try='./conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_cv_strstr_unbroken=ok
+else
+  echo "$as_me: program exited with status $ac_status" >&5
+echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+( exit $ac_status )
+tcl_cv_strstr_unbroken=broken
+fi
+rm -f core *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
+fi
+fi
+echo "$as_me:$LINENO: result: $tcl_cv_strstr_unbroken" >&5
+echo "${ECHO_T}$tcl_cv_strstr_unbroken" >&6
+	if test "$tcl_cv_strstr_unbroken" = "ok"; then
+	    tcl_ok=1
+	else
+	    tcl_ok=0
+	fi
+    fi
+    if test "$tcl_ok" = 0; then
+	case $LIBOBJS in
+    "strstr.$ac_objext"   | \
+  *" strstr.$ac_objext"   | \
+    "strstr.$ac_objext "* | \
+  *" strstr.$ac_objext "* ) ;;
+  *) LIBOBJS="$LIBOBJS strstr.$ac_objext" ;;
+esac
+
+	USE_COMPAT=1
+    fi
+
+
+#--------------------------------------------------------------------
+#	Check for strtoul function.  This is tricky because under some
+#	versions of AIX strtoul returns an incorrect terminator
+#	pointer for the string "0".
+#--------------------------------------------------------------------
+
+
+    echo "$as_me:$LINENO: checking for strtoul" >&5
+echo $ECHO_N "checking for strtoul... $ECHO_C" >&6
+if test "${ac_cv_func_strtoul+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define strtoul to an innocuous variant, in case <limits.h> declares strtoul.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define strtoul innocuous_strtoul
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char strtoul (); 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 strtoul
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char strtoul ();
+/* 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_strtoul) || defined (__stub___strtoul)
+choke me
+#else
+char (*f) () = strtoul;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != strtoul;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_func_strtoul=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_func_strtoul=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_func_strtoul" >&5
+echo "${ECHO_T}$ac_cv_func_strtoul" >&6
+if test $ac_cv_func_strtoul = yes; then
+  tcl_ok=1
+else
+  tcl_ok=0
+fi
+
+    if test "$tcl_ok" = 1; then
+	echo "$as_me:$LINENO: checking proper strtoul implementation" >&5
+echo $ECHO_N "checking proper strtoul implementation... $ECHO_C" >&6
+if test "${tcl_cv_strtoul_unbroken+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test "$cross_compiling" = yes; then
+  tcl_cv_strtoul_unbroken=unknown
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+int main() {
+    extern int strtoul();
+    char *term, *string = "0";
+    exit(strtoul(string,&term,0) != 0 || term != string+1);
+}
+_ACEOF
+rm -f conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && { ac_try='./conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_cv_strtoul_unbroken=ok
+else
+  echo "$as_me: program exited with status $ac_status" >&5
+echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+( exit $ac_status )
+tcl_cv_strtoul_unbroken=broken
+fi
+rm -f core *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
+fi
+fi
+echo "$as_me:$LINENO: result: $tcl_cv_strtoul_unbroken" >&5
+echo "${ECHO_T}$tcl_cv_strtoul_unbroken" >&6
+	if test "$tcl_cv_strtoul_unbroken" = "ok"; then
+	    tcl_ok=1
+	else
+	    tcl_ok=0
+	fi
+    fi
+    if test "$tcl_ok" = 0; then
+	case $LIBOBJS in
+    "strtoul.$ac_objext"   | \
+  *" strtoul.$ac_objext"   | \
+    "strtoul.$ac_objext "* | \
+  *" strtoul.$ac_objext "* ) ;;
+  *) LIBOBJS="$LIBOBJS strtoul.$ac_objext" ;;
+esac
+
+	USE_COMPAT=1
+    fi
+
+
+#--------------------------------------------------------------------
+#	Check for various typedefs and provide substitutes if
+#	they don't exist.
+#--------------------------------------------------------------------
+
+echo "$as_me:$LINENO: checking for mode_t" >&5
+echo $ECHO_N "checking for mode_t... $ECHO_C" >&6
+if test "${ac_cv_type_mode_t+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+int
+main ()
+{
+if ((mode_t *) 0)
+  return 0;
+if (sizeof (mode_t))
+  return 0;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_type_mode_t=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_type_mode_t=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_type_mode_t" >&5
+echo "${ECHO_T}$ac_cv_type_mode_t" >&6
+if test $ac_cv_type_mode_t = yes; then
+  :
+else
+
+cat >>confdefs.h <<_ACEOF
+#define mode_t int
+_ACEOF
+
+fi
+
+echo "$as_me:$LINENO: checking for pid_t" >&5
+echo $ECHO_N "checking for pid_t... $ECHO_C" >&6
+if test "${ac_cv_type_pid_t+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+int
+main ()
+{
+if ((pid_t *) 0)
+  return 0;
+if (sizeof (pid_t))
+  return 0;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_type_pid_t=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_type_pid_t=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_type_pid_t" >&5
+echo "${ECHO_T}$ac_cv_type_pid_t" >&6
+if test $ac_cv_type_pid_t = yes; then
+  :
+else
+
+cat >>confdefs.h <<_ACEOF
+#define pid_t int
+_ACEOF
+
+fi
+
+echo "$as_me:$LINENO: checking for size_t" >&5
+echo $ECHO_N "checking for size_t... $ECHO_C" >&6
+if test "${ac_cv_type_size_t+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+int
+main ()
+{
+if ((size_t *) 0)
+  return 0;
+if (sizeof (size_t))
+  return 0;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_type_size_t=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_type_size_t=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_type_size_t" >&5
+echo "${ECHO_T}$ac_cv_type_size_t" >&6
+if test $ac_cv_type_size_t = yes; then
+  :
+else
+
+cat >>confdefs.h <<_ACEOF
+#define size_t unsigned
+_ACEOF
+
+fi
+
+echo "$as_me:$LINENO: checking for uid_t in sys/types.h" >&5
+echo $ECHO_N "checking for uid_t in sys/types.h... $ECHO_C" >&6
+if test "${ac_cv_type_uid_t+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <sys/types.h>
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "uid_t" >/dev/null 2>&1; then
+  ac_cv_type_uid_t=yes
+else
+  ac_cv_type_uid_t=no
+fi
+rm -f conftest*
+
+fi
+echo "$as_me:$LINENO: result: $ac_cv_type_uid_t" >&5
+echo "${ECHO_T}$ac_cv_type_uid_t" >&6
+if test $ac_cv_type_uid_t = no; then
+
+cat >>confdefs.h <<\_ACEOF
+#define uid_t int
+_ACEOF
+
+
+cat >>confdefs.h <<\_ACEOF
+#define gid_t int
+_ACEOF
+
+fi
+
+
+echo "$as_me:$LINENO: checking for socklen_t" >&5
+echo $ECHO_N "checking for socklen_t... $ECHO_C" >&6
+if test "${tcl_cv_type_socklen_t+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+	#include <sys/types.h>
+	#include <sys/socket.h>
+
+int
+main ()
+{
+
+    	socklen_t foo;
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_cv_type_socklen_t=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+tcl_cv_type_socklen_t=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $tcl_cv_type_socklen_t" >&5
+echo "${ECHO_T}$tcl_cv_type_socklen_t" >&6
+if test $tcl_cv_type_socklen_t = no; then
+
+cat >>confdefs.h <<\_ACEOF
+#define socklen_t int
+_ACEOF
+
+fi
+
+echo "$as_me:$LINENO: checking for intptr_t" >&5
+echo $ECHO_N "checking for intptr_t... $ECHO_C" >&6
+if test "${ac_cv_type_intptr_t+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+int
+main ()
+{
+if ((intptr_t *) 0)
+  return 0;
+if (sizeof (intptr_t))
+  return 0;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_type_intptr_t=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_type_intptr_t=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_type_intptr_t" >&5
+echo "${ECHO_T}$ac_cv_type_intptr_t" >&6
+if test $ac_cv_type_intptr_t = yes; then
+
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_INTPTR_T 1
+_ACEOF
+
+else
+
+    echo "$as_me:$LINENO: checking for pointer-size signed integer type" >&5
+echo $ECHO_N "checking for pointer-size signed integer type... $ECHO_C" >&6
+if test "${tcl_cv_intptr_t+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+    for tcl_cv_intptr_t in "int" "long" "long long" none; do
+	if test "$tcl_cv_intptr_t" != none; then
+	    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+int
+main ()
+{
+static int test_array [1 - 2 * !(sizeof (void *) <= sizeof ($tcl_cv_intptr_t))];
+test_array [0] = 0
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_ok=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+tcl_ok=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+	    test "$tcl_ok" = yes && break; fi
+    done
+fi
+echo "$as_me:$LINENO: result: $tcl_cv_intptr_t" >&5
+echo "${ECHO_T}$tcl_cv_intptr_t" >&6
+    if test "$tcl_cv_intptr_t" != none; then
+
+cat >>confdefs.h <<_ACEOF
+#define intptr_t $tcl_cv_intptr_t
+_ACEOF
+
+    fi
+
+fi
+
+echo "$as_me:$LINENO: checking for uintptr_t" >&5
+echo $ECHO_N "checking for uintptr_t... $ECHO_C" >&6
+if test "${ac_cv_type_uintptr_t+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+int
+main ()
+{
+if ((uintptr_t *) 0)
+  return 0;
+if (sizeof (uintptr_t))
+  return 0;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_type_uintptr_t=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_type_uintptr_t=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_type_uintptr_t" >&5
+echo "${ECHO_T}$ac_cv_type_uintptr_t" >&6
+if test $ac_cv_type_uintptr_t = yes; then
+
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_UINTPTR_T 1
+_ACEOF
+
+else
+
+    echo "$as_me:$LINENO: checking for pointer-size unsigned integer type" >&5
+echo $ECHO_N "checking for pointer-size unsigned integer type... $ECHO_C" >&6
+if test "${tcl_cv_uintptr_t+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+    for tcl_cv_uintptr_t in "unsigned int" "unsigned long" "unsigned long long" \
+	    none; do
+	if test "$tcl_cv_uintptr_t" != none; then
+	    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+int
+main ()
+{
+static int test_array [1 - 2 * !(sizeof (void *) <= sizeof ($tcl_cv_uintptr_t))];
+test_array [0] = 0
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_ok=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+tcl_ok=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+	    test "$tcl_ok" = yes && break; fi
+    done
+fi
+echo "$as_me:$LINENO: result: $tcl_cv_uintptr_t" >&5
+echo "${ECHO_T}$tcl_cv_uintptr_t" >&6
+    if test "$tcl_cv_uintptr_t" != none; then
+
+cat >>confdefs.h <<_ACEOF
+#define uintptr_t $tcl_cv_uintptr_t
+_ACEOF
+
+    fi
+
+fi
+
+
+#--------------------------------------------------------------------
+#	If a system doesn't have an opendir function (man, that's old!)
+#	then we have to supply a different version of dirent.h which
+#	is compatible with the substitute version of opendir that's
+#	provided.  This version only works with V7-style directories.
+#--------------------------------------------------------------------
+
+echo "$as_me:$LINENO: checking for opendir" >&5
+echo $ECHO_N "checking for opendir... $ECHO_C" >&6
+if test "${ac_cv_func_opendir+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define opendir to an innocuous variant, in case <limits.h> declares opendir.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define opendir innocuous_opendir
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char opendir (); 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 opendir
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char opendir ();
+/* 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_opendir) || defined (__stub___opendir)
+choke me
+#else
+char (*f) () = opendir;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != opendir;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_func_opendir=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_func_opendir=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_func_opendir" >&5
+echo "${ECHO_T}$ac_cv_func_opendir" >&6
+if test $ac_cv_func_opendir = yes; then
+  :
+else
+
+cat >>confdefs.h <<\_ACEOF
+#define USE_DIRENT2_H 1
+_ACEOF
+
+fi
+
+
+#--------------------------------------------------------------------
+#	The check below checks whether <sys/wait.h> defines the type
+#	"union wait" correctly.  It's needed because of weirdness in
+#	HP-UX where "union wait" is defined in both the BSD and SYS-V
+#	environments.  Checking the usability of WIFEXITED seems to do
+#	the trick.
+#--------------------------------------------------------------------
+
+echo "$as_me:$LINENO: checking union wait" >&5
+echo $ECHO_N "checking union wait... $ECHO_C" >&6
+if test "${tcl_cv_union_wait+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <sys/types.h>
+#include <sys/wait.h>
+int
+main ()
+{
+
+union wait x;
+WIFEXITED(x);		/* Generates compiler error if WIFEXITED
+			 * uses an int. */
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_cv_union_wait=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+tcl_cv_union_wait=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $tcl_cv_union_wait" >&5
+echo "${ECHO_T}$tcl_cv_union_wait" >&6
+if test $tcl_cv_union_wait = no; then
+
+cat >>confdefs.h <<\_ACEOF
+#define NO_UNION_WAIT 1
+_ACEOF
+
+fi
+
+#--------------------------------------------------------------------
+#	Check whether there is an strncasecmp function on this system.
+#	This is a bit tricky because under SCO it's in -lsocket and
+#	under Sequent Dynix it's in -linet.
+#--------------------------------------------------------------------
+
+echo "$as_me:$LINENO: checking for strncasecmp" >&5
+echo $ECHO_N "checking for strncasecmp... $ECHO_C" >&6
+if test "${ac_cv_func_strncasecmp+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define strncasecmp to an innocuous variant, in case <limits.h> declares strncasecmp.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define strncasecmp innocuous_strncasecmp
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char strncasecmp (); 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 strncasecmp
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char strncasecmp ();
+/* 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_strncasecmp) || defined (__stub___strncasecmp)
+choke me
+#else
+char (*f) () = strncasecmp;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != strncasecmp;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_func_strncasecmp=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_func_strncasecmp=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_func_strncasecmp" >&5
+echo "${ECHO_T}$ac_cv_func_strncasecmp" >&6
+if test $ac_cv_func_strncasecmp = yes; then
+  tcl_ok=1
+else
+  tcl_ok=0
+fi
+
+if test "$tcl_ok" = 0; then
+    echo "$as_me:$LINENO: checking for strncasecmp in -lsocket" >&5
+echo $ECHO_N "checking for strncasecmp in -lsocket... $ECHO_C" >&6
+if test "${ac_cv_lib_socket_strncasecmp+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lsocket  $LIBS"
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char strncasecmp ();
+int
+main ()
+{
+strncasecmp ();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_lib_socket_strncasecmp=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_lib_socket_strncasecmp=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+echo "$as_me:$LINENO: result: $ac_cv_lib_socket_strncasecmp" >&5
+echo "${ECHO_T}$ac_cv_lib_socket_strncasecmp" >&6
+if test $ac_cv_lib_socket_strncasecmp = yes; then
+  tcl_ok=1
+else
+  tcl_ok=0
+fi
+
+fi
+if test "$tcl_ok" = 0; then
+    echo "$as_me:$LINENO: checking for strncasecmp in -linet" >&5
+echo $ECHO_N "checking for strncasecmp in -linet... $ECHO_C" >&6
+if test "${ac_cv_lib_inet_strncasecmp+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-linet  $LIBS"
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char strncasecmp ();
+int
+main ()
+{
+strncasecmp ();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_lib_inet_strncasecmp=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_lib_inet_strncasecmp=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+echo "$as_me:$LINENO: result: $ac_cv_lib_inet_strncasecmp" >&5
+echo "${ECHO_T}$ac_cv_lib_inet_strncasecmp" >&6
+if test $ac_cv_lib_inet_strncasecmp = yes; then
+  tcl_ok=1
+else
+  tcl_ok=0
+fi
+
+fi
+if test "$tcl_ok" = 0; then
+    case $LIBOBJS in
+    "strncasecmp.$ac_objext"   | \
+  *" strncasecmp.$ac_objext"   | \
+    "strncasecmp.$ac_objext "* | \
+  *" strncasecmp.$ac_objext "* ) ;;
+  *) LIBOBJS="$LIBOBJS strncasecmp.$ac_objext" ;;
+esac
+
+    USE_COMPAT=1
+fi
+
+#--------------------------------------------------------------------
+#	The code below deals with several issues related to gettimeofday:
+#	1. Some systems don't provide a gettimeofday function at all
+#	   (set NO_GETTOD if this is the case).
+#	2. See if gettimeofday is declared in the <sys/time.h> header file.
+#	   if not, set the GETTOD_NOT_DECLARED flag so that tclPort.h can
+#	   declare it.
+#--------------------------------------------------------------------
+
+echo "$as_me:$LINENO: checking for gettimeofday" >&5
+echo $ECHO_N "checking for gettimeofday... $ECHO_C" >&6
+if test "${ac_cv_func_gettimeofday+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define gettimeofday to an innocuous variant, in case <limits.h> declares gettimeofday.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define gettimeofday innocuous_gettimeofday
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char gettimeofday (); 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 gettimeofday
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char gettimeofday ();
+/* 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_gettimeofday) || defined (__stub___gettimeofday)
+choke me
+#else
+char (*f) () = gettimeofday;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != gettimeofday;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_func_gettimeofday=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_func_gettimeofday=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_func_gettimeofday" >&5
+echo "${ECHO_T}$ac_cv_func_gettimeofday" >&6
+if test $ac_cv_func_gettimeofday = yes; then
+  :
+else
+
+
+cat >>confdefs.h <<\_ACEOF
+#define NO_GETTOD 1
+_ACEOF
+
+
+fi
+
+echo "$as_me:$LINENO: checking for gettimeofday declaration" >&5
+echo $ECHO_N "checking for gettimeofday declaration... $ECHO_C" >&6
+if test "${tcl_cv_grep_gettimeofday+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <sys/time.h>
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "gettimeofday" >/dev/null 2>&1; then
+  tcl_cv_grep_gettimeofday=present
+else
+  tcl_cv_grep_gettimeofday=missing
+fi
+rm -f conftest*
+
+fi
+echo "$as_me:$LINENO: result: $tcl_cv_grep_gettimeofday" >&5
+echo "${ECHO_T}$tcl_cv_grep_gettimeofday" >&6
+if test $tcl_cv_grep_gettimeofday = missing ; then
+
+cat >>confdefs.h <<\_ACEOF
+#define GETTOD_NOT_DECLARED 1
+_ACEOF
+
+fi
+
+#--------------------------------------------------------------------
+#	The following code checks to see whether it is possible to get
+#	signed chars on this platform.  This is needed in order to
+#	properly generate sign-extended ints from character values.
+#--------------------------------------------------------------------
+
+
+echo "$as_me:$LINENO: checking whether char is unsigned" >&5
+echo $ECHO_N "checking whether char is unsigned... $ECHO_C" >&6
+if test "${ac_cv_c_char_unsigned+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+int
+main ()
+{
+static int test_array [1 - 2 * !(((char) -1) < 0)];
+test_array [0] = 0
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_c_char_unsigned=no
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_c_char_unsigned=yes
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_c_char_unsigned" >&5
+echo "${ECHO_T}$ac_cv_c_char_unsigned" >&6
+if test $ac_cv_c_char_unsigned = yes && test "$GCC" != yes; then
+  cat >>confdefs.h <<\_ACEOF
+#define __CHAR_UNSIGNED__ 1
+_ACEOF
+
+fi
+
+echo "$as_me:$LINENO: checking signed char declarations" >&5
+echo $ECHO_N "checking signed char declarations... $ECHO_C" >&6
+if test "${tcl_cv_char_signed+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+	signed char *p;
+	p = 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_cv_char_signed=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+tcl_cv_char_signed=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $tcl_cv_char_signed" >&5
+echo "${ECHO_T}$tcl_cv_char_signed" >&6
+if test $tcl_cv_char_signed = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_SIGNED_CHAR 1
+_ACEOF
+
+fi
+
+#--------------------------------------------------------------------
+#  Does putenv() copy or not?  We need to know to avoid memory leaks.
+#--------------------------------------------------------------------
+
+echo "$as_me:$LINENO: checking for a putenv() that copies the buffer" >&5
+echo $ECHO_N "checking for a putenv() that copies the buffer... $ECHO_C" >&6
+if test "${tcl_cv_putenv_copy+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+    if test "$cross_compiling" = yes; then
+  tcl_cv_putenv_copy=no
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+	#include <stdlib.h>
+	#define OURVAR "havecopy=yes"
+	int main (int argc, char *argv[])
+	{
+	    char *foo, *bar;
+	    foo = (char *)strdup(OURVAR);
+	    putenv(foo);
+	    strcpy((char *)(strchr(foo, '=') + 1), "no");
+	    bar = getenv("havecopy");
+	    if (!strcmp(bar, "no")) {
+		/* doesnt copy */
+		return 0;
+	    } else {
+		/* does copy */
+		return 1;
+	    }
+	}
+
+_ACEOF
+rm -f conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && { ac_try='./conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_cv_putenv_copy=no
+else
+  echo "$as_me: program exited with status $ac_status" >&5
+echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+( exit $ac_status )
+tcl_cv_putenv_copy=yes
+fi
+rm -f core *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
+fi
+fi
+echo "$as_me:$LINENO: result: $tcl_cv_putenv_copy" >&5
+echo "${ECHO_T}$tcl_cv_putenv_copy" >&6
+if test $tcl_cv_putenv_copy = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_PUTENV_THAT_COPIES 1
+_ACEOF
+
+fi
+
+#--------------------------------------------------------------------
+# Check for support of nl_langinfo function
+#--------------------------------------------------------------------
+
+
+    # Check whether --enable-langinfo or --disable-langinfo was given.
+if test "${enable_langinfo+set}" = set; then
+  enableval="$enable_langinfo"
+  langinfo_ok=$enableval
+else
+  langinfo_ok=yes
+fi;
+
+    HAVE_LANGINFO=0
+    if test "$langinfo_ok" = "yes"; then
+	if test "${ac_cv_header_langinfo_h+set}" = set; then
+  echo "$as_me:$LINENO: checking for langinfo.h" >&5
+echo $ECHO_N "checking for langinfo.h... $ECHO_C" >&6
+if test "${ac_cv_header_langinfo_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_langinfo_h" >&5
+echo "${ECHO_T}$ac_cv_header_langinfo_h" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking langinfo.h usability" >&5
+echo $ECHO_N "checking langinfo.h usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <langinfo.h>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_header_compiler=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
+
+# Is the header present?
+echo "$as_me:$LINENO: checking langinfo.h presence" >&5
+echo $ECHO_N "checking langinfo.h presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <langinfo.h>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: langinfo.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: langinfo.h: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: present but cannot be compiled" >&5
+echo "$as_me: WARNING: langinfo.h: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: langinfo.h:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: langinfo.h: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: langinfo.h:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: langinfo.h: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: langinfo.h: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ------------------------------ ##
+## Report this to the tcl lists.  ##
+## ------------------------------ ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for langinfo.h" >&5
+echo $ECHO_N "checking for langinfo.h... $ECHO_C" >&6
+if test "${ac_cv_header_langinfo_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_cv_header_langinfo_h=$ac_header_preproc
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_langinfo_h" >&5
+echo "${ECHO_T}$ac_cv_header_langinfo_h" >&6
+
+fi
+if test $ac_cv_header_langinfo_h = yes; then
+  langinfo_ok=yes
+else
+  langinfo_ok=no
+fi
+
+
+    fi
+    echo "$as_me:$LINENO: checking whether to use nl_langinfo" >&5
+echo $ECHO_N "checking whether to use nl_langinfo... $ECHO_C" >&6
+    if test "$langinfo_ok" = "yes"; then
+	if test "${tcl_cv_langinfo_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+	    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <langinfo.h>
+int
+main ()
+{
+nl_langinfo(CODESET);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_cv_langinfo_h=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+tcl_cv_langinfo_h=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+
+	echo "$as_me:$LINENO: result: $tcl_cv_langinfo_h" >&5
+echo "${ECHO_T}$tcl_cv_langinfo_h" >&6
+	if test $tcl_cv_langinfo_h = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_LANGINFO 1
+_ACEOF
+
+	fi
+    else
+	echo "$as_me:$LINENO: result: $langinfo_ok" >&5
+echo "${ECHO_T}$langinfo_ok" >&6
+    fi
+
+
+#--------------------------------------------------------------------
+# Check for support of chflags and mkstemps functions
+#--------------------------------------------------------------------
+
+
+
+for ac_func in chflags mkstemps
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); 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 $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+
+#--------------------------------------------------------------------
+# Check for support of isnan() function or macro
+#--------------------------------------------------------------------
+
+echo "$as_me:$LINENO: checking isnan" >&5
+echo $ECHO_N "checking isnan... $ECHO_C" >&6
+if test "${tcl_cv_isnan+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+int
+main ()
+{
+
+isnan(0.0);			/* Generates an error if isnan is missing */
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_cv_isnan=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+tcl_cv_isnan=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $tcl_cv_isnan" >&5
+echo "${ECHO_T}$tcl_cv_isnan" >&6
+if test $tcl_cv_isnan = no; then
+
+cat >>confdefs.h <<\_ACEOF
+#define NO_ISNAN 1
+_ACEOF
+
+fi
+
+#--------------------------------------------------------------------
+# Darwin specific API checks and defines
+#--------------------------------------------------------------------
+
+if test "`uname -s`" = "Darwin" ; then
+
+for ac_func in getattrlist
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); 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 $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+
+for ac_header in copyfile.h
+do
+as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking $ac_header usability" >&5
+echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <$ac_header>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_header_compiler=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
+
+# Is the header present?
+echo "$as_me:$LINENO: checking $ac_header presence" >&5
+echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <$ac_header>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
+echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ------------------------------ ##
+## Report this to the tcl lists.  ##
+## ------------------------------ ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  eval "$as_ac_Header=\$ac_header_preproc"
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+
+fi
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+
+done
+
+
+for ac_func in copyfile
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); 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 $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+    if test $tcl_corefoundation = yes; then
+
+for ac_header in libkern/OSAtomic.h
+do
+as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking $ac_header usability" >&5
+echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <$ac_header>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_header_compiler=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
+
+# Is the header present?
+echo "$as_me:$LINENO: checking $ac_header presence" >&5
+echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <$ac_header>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
+echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ------------------------------ ##
+## Report this to the tcl lists.  ##
+## ------------------------------ ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  eval "$as_ac_Header=\$ac_header_preproc"
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+
+fi
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+
+done
+
+
+for ac_func in OSSpinLockLock
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); 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 $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+    fi
+
+cat >>confdefs.h <<\_ACEOF
+#define USE_VFORK 1
+_ACEOF
+
+
+cat >>confdefs.h <<\_ACEOF
+#define TCL_DEFAULT_ENCODING "utf-8"
+_ACEOF
+
+
+cat >>confdefs.h <<\_ACEOF
+#define TCL_LOAD_FROM_MEMORY 1
+_ACEOF
+
+
+cat >>confdefs.h <<\_ACEOF
+#define TCL_WIDE_CLICKS 1
+_ACEOF
+
+
+for ac_header in AvailabilityMacros.h
+do
+as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking $ac_header usability" >&5
+echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <$ac_header>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_header_compiler=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
+
+# Is the header present?
+echo "$as_me:$LINENO: checking $ac_header presence" >&5
+echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <$ac_header>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
+echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ------------------------------ ##
+## Report this to the tcl lists.  ##
+## ------------------------------ ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  eval "$as_ac_Header=\$ac_header_preproc"
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+
+fi
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+
+done
+
+    if test "$ac_cv_header_AvailabilityMacros_h" = yes; then
+	echo "$as_me:$LINENO: checking if weak import is available" >&5
+echo $ECHO_N "checking if weak import is available... $ECHO_C" >&6
+if test "${tcl_cv_cc_weak_import+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+	    hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -Werror"
+	    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+		    #ifdef __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__
+		    #if __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 1020
+		    #error __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 1020
+		    #endif
+		    #elif MAC_OS_X_VERSION_MIN_REQUIRED < 1020
+		    #error MAC_OS_X_VERSION_MIN_REQUIRED < 1020
+		    #endif
+		    int rand(void) __attribute__((weak_import));
+
+int
+main ()
+{
+rand();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_cv_cc_weak_import=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+tcl_cv_cc_weak_import=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+	    CFLAGS=$hold_cflags
+fi
+echo "$as_me:$LINENO: result: $tcl_cv_cc_weak_import" >&5
+echo "${ECHO_T}$tcl_cv_cc_weak_import" >&6
+	if test $tcl_cv_cc_weak_import = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_WEAK_IMPORT 1
+_ACEOF
+
+	fi
+	echo "$as_me:$LINENO: checking if Darwin SUSv3 extensions are available" >&5
+echo $ECHO_N "checking if Darwin SUSv3 extensions are available... $ECHO_C" >&6
+if test "${tcl_cv_cc_darwin_c_source+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+	    hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -Werror"
+	    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+		    #ifdef __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__
+		    #if __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 1050
+		    #error __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 1050
+		    #endif
+		    #elif MAC_OS_X_VERSION_MIN_REQUIRED < 1050
+		    #error MAC_OS_X_VERSION_MIN_REQUIRED < 1050
+		    #endif
+		    #define _DARWIN_C_SOURCE 1
+		    #include <sys/cdefs.h>
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_cv_cc_darwin_c_source=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+tcl_cv_cc_darwin_c_source=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+	    CFLAGS=$hold_cflags
+fi
+echo "$as_me:$LINENO: result: $tcl_cv_cc_darwin_c_source" >&5
+echo "${ECHO_T}$tcl_cv_cc_darwin_c_source" >&6
+	if test $tcl_cv_cc_darwin_c_source = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define _DARWIN_C_SOURCE 1
+_ACEOF
+
+	fi
+    fi
+    # Build .bundle dltest binaries in addition to .dylib
+    DLTEST_LD='${CC} -bundle -Wl,-w ${CFLAGS} ${LDFLAGS}'
+    DLTEST_SUFFIX=".bundle"
+else
+    DLTEST_LD='${SHLIB_LD}'
+    DLTEST_SUFFIX=""
+fi
+
+#--------------------------------------------------------------------
+#	Check for support of fts functions (readdir replacement)
+#--------------------------------------------------------------------
+
+echo "$as_me:$LINENO: checking for fts" >&5
+echo $ECHO_N "checking for fts... $ECHO_C" >&6
+if test "${tcl_cv_api_fts+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+	    #include <sys/param.h>
+	    #include <sys/stat.h>
+	    #include <fts.h>
+
+int
+main ()
+{
+
+	    char*const p[2] = {"/", NULL};
+	    FTS *f = fts_open(p, FTS_PHYSICAL|FTS_NOCHDIR|FTS_NOSTAT, NULL);
+	    FTSENT *e = fts_read(f); fts_close(f);
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_cv_api_fts=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+tcl_cv_api_fts=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $tcl_cv_api_fts" >&5
+echo "${ECHO_T}$tcl_cv_api_fts" >&6
+if test $tcl_cv_api_fts = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_FTS 1
+_ACEOF
+
+fi
+
+#--------------------------------------------------------------------
+#	The statements below check for systems where POSIX-style non-blocking
+#	I/O (O_NONBLOCK) doesn't work or is unimplemented. On these systems
+#	(mostly older ones), use the old BSD-style FIONBIO approach instead.
+#--------------------------------------------------------------------
+
+
+
+for ac_header in sys/ioctl.h
+do
+as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking $ac_header usability" >&5
+echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <$ac_header>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_header_compiler=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
+
+# Is the header present?
+echo "$as_me:$LINENO: checking $ac_header presence" >&5
+echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <$ac_header>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
+echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ------------------------------ ##
+## Report this to the tcl lists.  ##
+## ------------------------------ ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  eval "$as_ac_Header=\$ac_header_preproc"
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+
+fi
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+
+done
+
+
+for ac_header in sys/filio.h
+do
+as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking $ac_header usability" >&5
+echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <$ac_header>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_header_compiler=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
+
+# Is the header present?
+echo "$as_me:$LINENO: checking $ac_header presence" >&5
+echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <$ac_header>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
+echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ------------------------------ ##
+## Report this to the tcl lists.  ##
+## ------------------------------ ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  eval "$as_ac_Header=\$ac_header_preproc"
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+
+fi
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+
+done
+
+
+    echo "$as_me:$LINENO: checking system version" >&5
+echo $ECHO_N "checking system version... $ECHO_C" >&6
+if test "${tcl_cv_sys_version+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+	if test -f /usr/lib/NextStep/software_version; then
+	    tcl_cv_sys_version=NEXTSTEP-`awk '/3/,/3/' /usr/lib/NextStep/software_version`
+	else
+	    tcl_cv_sys_version=`uname -s`-`uname -r`
+	    if test "$?" -ne 0 ; then
+		{ echo "$as_me:$LINENO: WARNING: can't find uname command" >&5
+echo "$as_me: WARNING: can't find uname command" >&2;}
+		tcl_cv_sys_version=unknown
+	    else
+		# Special check for weird MP-RAS system (uname returns weird
+		# results, and the version is kept in special file).
+
+		if test -r /etc/.relid -a "X`uname -n`" = "X`uname -s`" ; then
+		    tcl_cv_sys_version=MP-RAS-`awk '{print $3}' /etc/.relid`
+		fi
+		if test "`uname -s`" = "AIX" ; then
+		    tcl_cv_sys_version=AIX-`uname -v`.`uname -r`
+		fi
+	    fi
+	fi
+
+fi
+echo "$as_me:$LINENO: result: $tcl_cv_sys_version" >&5
+echo "${ECHO_T}$tcl_cv_sys_version" >&6
+    system=$tcl_cv_sys_version
+
+    echo "$as_me:$LINENO: checking FIONBIO vs. O_NONBLOCK for nonblocking I/O" >&5
+echo $ECHO_N "checking FIONBIO vs. O_NONBLOCK for nonblocking I/O... $ECHO_C" >&6
+    case $system in
+	OSF*)
+
+cat >>confdefs.h <<\_ACEOF
+#define USE_FIONBIO 1
+_ACEOF
+
+	    echo "$as_me:$LINENO: result: FIONBIO" >&5
+echo "${ECHO_T}FIONBIO" >&6
+	    ;;
+	SunOS-4*)
+
+cat >>confdefs.h <<\_ACEOF
+#define USE_FIONBIO 1
+_ACEOF
+
+	    echo "$as_me:$LINENO: result: FIONBIO" >&5
+echo "${ECHO_T}FIONBIO" >&6
+	    ;;
+	*)
+	    echo "$as_me:$LINENO: result: O_NONBLOCK" >&5
+echo "${ECHO_T}O_NONBLOCK" >&6
+	    ;;
+    esac
+
+
+#------------------------------------------------------------------------
+
+echo "$as_me:$LINENO: checking whether to use dll unloading" >&5
+echo $ECHO_N "checking whether to use dll unloading... $ECHO_C" >&6
+# Check whether --enable-dll-unloading or --disable-dll-unloading was given.
+if test "${enable_dll_unloading+set}" = set; then
+  enableval="$enable_dll_unloading"
+  tcl_ok=$enableval
+else
+  tcl_ok=yes
+fi;
+if test $tcl_ok = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define TCL_UNLOAD_DLLS 1
+_ACEOF
+
+fi
+echo "$as_me:$LINENO: result: $tcl_ok" >&5
+echo "${ECHO_T}$tcl_ok" >&6
+
+#------------------------------------------------------------------------
+#	Check whether the timezone data is supplied by the OS or has
+#	to be installed by Tcl. The default is autodetection, but can
+#	be overriden on the configure command line either way.
+#------------------------------------------------------------------------
+
+echo "$as_me:$LINENO: checking for timezone data" >&5
+echo $ECHO_N "checking for timezone data... $ECHO_C" >&6
+
+# Check whether --with-tzdata or --without-tzdata was given.
+if test "${with_tzdata+set}" = set; then
+  withval="$with_tzdata"
+  tcl_ok=$withval
+else
+  tcl_ok=auto
+fi;
+#
+# Any directories that get added here must also be added to the
+# search path in ::tcl::clock::Initialize (library/clock.tcl).
+#
+case $tcl_ok in
+    no)
+	echo "$as_me:$LINENO: result: supplied by OS vendor" >&5
+echo "${ECHO_T}supplied by OS vendor" >&6
+    ;;
+    yes)
+	# nothing to do here
+    ;;
+    auto*)
+	if test "${tcl_cv_dir_zoneinfo+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+	for dir in /usr/share/zoneinfo \
+		/usr/share/lib/zoneinfo \
+		/usr/lib/zoneinfo
+	do
+		if test -f $dir/UTC -o -f $dir/GMT
+		then
+			tcl_cv_dir_zoneinfo="$dir"
+			break
+		fi
+	done
+fi
+
+	if test -n "$tcl_cv_dir_zoneinfo"; then
+	    tcl_ok=no
+	    echo "$as_me:$LINENO: result: $dir" >&5
+echo "${ECHO_T}$dir" >&6
+	else
+	    tcl_ok=yes
+	fi
+    ;;
+    *)
+	{ { echo "$as_me:$LINENO: error: invalid argument: $tcl_ok" >&5
+echo "$as_me: error: invalid argument: $tcl_ok" >&2;}
+   { (exit 1); exit 1; }; }
+    ;;
+esac
+if test $tcl_ok = yes
+then
+    echo "$as_me:$LINENO: result: supplied by Tcl" >&5
+echo "${ECHO_T}supplied by Tcl" >&6
+    INSTALL_TZDATA=install-tzdata
+fi
+
+#--------------------------------------------------------------------
+#	DTrace support
+#--------------------------------------------------------------------
+
+# Check whether --enable-dtrace or --disable-dtrace was given.
+if test "${enable_dtrace+set}" = set; then
+  enableval="$enable_dtrace"
+  tcl_ok=$enableval
+else
+  tcl_ok=no
+fi;
+if test $tcl_ok = yes; then
+    if test "${ac_cv_header_sys_sdt_h+set}" = set; then
+  echo "$as_me:$LINENO: checking for sys/sdt.h" >&5
+echo $ECHO_N "checking for sys/sdt.h... $ECHO_C" >&6
+if test "${ac_cv_header_sys_sdt_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_sys_sdt_h" >&5
+echo "${ECHO_T}$ac_cv_header_sys_sdt_h" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking sys/sdt.h usability" >&5
+echo $ECHO_N "checking sys/sdt.h usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <sys/sdt.h>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_header_compiler=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
+
+# Is the header present?
+echo "$as_me:$LINENO: checking sys/sdt.h presence" >&5
+echo $ECHO_N "checking sys/sdt.h presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <sys/sdt.h>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: sys/sdt.h: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: sys/sdt.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: sys/sdt.h: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: sys/sdt.h: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: sys/sdt.h: present but cannot be compiled" >&5
+echo "$as_me: WARNING: sys/sdt.h: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: sys/sdt.h:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: sys/sdt.h:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: sys/sdt.h: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: sys/sdt.h: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: sys/sdt.h:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: sys/sdt.h:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: sys/sdt.h: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: sys/sdt.h: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: sys/sdt.h: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: sys/sdt.h: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ------------------------------ ##
+## Report this to the tcl lists.  ##
+## ------------------------------ ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for sys/sdt.h" >&5
+echo $ECHO_N "checking for sys/sdt.h... $ECHO_C" >&6
+if test "${ac_cv_header_sys_sdt_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_cv_header_sys_sdt_h=$ac_header_preproc
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_sys_sdt_h" >&5
+echo "${ECHO_T}$ac_cv_header_sys_sdt_h" >&6
+
+fi
+if test $ac_cv_header_sys_sdt_h = yes; then
+  tcl_ok=yes
+else
+  tcl_ok=no
+fi
+
+
+fi
+if test $tcl_ok = yes; then
+    # Extract the first word of "dtrace", so it can be a program name with args.
+set dummy dtrace; ac_word=$2
+echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
+if test "${ac_cv_path_DTRACE+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  case $DTRACE in
+  [\\/]* | ?:[\\/]*)
+  ac_cv_path_DTRACE="$DTRACE" # Let the user override the test with a path.
+  ;;
+  *)
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+as_dummy="$PATH:/usr/sbin"
+for as_dir in $as_dummy
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for ac_exec_ext in '' $ac_executable_extensions; do
+  if $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_path_DTRACE="$as_dir/$ac_word$ac_exec_ext"
+    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+done
+
+  ;;
+esac
+fi
+DTRACE=$ac_cv_path_DTRACE
+
+if test -n "$DTRACE"; then
+  echo "$as_me:$LINENO: result: $DTRACE" >&5
+echo "${ECHO_T}$DTRACE" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+
+    test -z "$ac_cv_path_DTRACE" && tcl_ok=no
+fi
+echo "$as_me:$LINENO: checking whether to enable DTrace support" >&5
+echo $ECHO_N "checking whether to enable DTrace support... $ECHO_C" >&6
+MAKEFILE_SHELL='/bin/sh'
+if test $tcl_ok = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define USE_DTRACE 1
+_ACEOF
+
+    DTRACE_SRC="\${DTRACE_SRC}"
+    DTRACE_HDR="\${DTRACE_HDR}"
+    if test "`uname -s`" != "Darwin" ; then
+	DTRACE_OBJ="\${DTRACE_OBJ}"
+	if test "`uname -s`" = "SunOS" -a "$SHARED_BUILD" = "0" ; then
+	    # Need to create an intermediate object file to ensure tclDTrace.o
+	    # gets included when linking against the static tcl library.
+	    STLIB_LD='stlib_ld () { /usr/ccs/bin/ld -r -o $${1%.a}.o "$${@:2}" && '"${STLIB_LD}"' $${1} $${1%.a}.o ; } && stlib_ld'
+	    MAKEFILE_SHELL='/bin/bash'
+	    # Force use of Sun ar and ranlib, the GNU versions choke on
+	    # tclDTrace.o and the combined object file above.
+	    AR='/usr/ccs/bin/ar'
+	    RANLIB='/usr/ccs/bin/ranlib'
+	fi
+    fi
+fi
+echo "$as_me:$LINENO: result: $tcl_ok" >&5
+echo "${ECHO_T}$tcl_ok" >&6
+
+#--------------------------------------------------------------------
+# The check below checks whether the cpuid instruction is usable.
+#--------------------------------------------------------------------
+
+echo "$as_me:$LINENO: checking whether the cpuid instruction is usable" >&5
+echo $ECHO_N "checking whether the cpuid instruction is usable... $ECHO_C" >&6
+if test "${tcl_cv_cpuid+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+	int index,regsPtr[4];
+    __asm__ __volatile__("mov %%ebx, %%edi     \n\t"
+                 "cpuid            \n\t"
+                 "mov %%ebx, %%esi   \n\t"
+                 "mov %%edi, %%ebx  \n\t"
+                 : "=a"(regsPtr[0]), "=S"(regsPtr[1]), "=c"(regsPtr[2]), "=d"(regsPtr[3])
+                 : "a"(index) : "edi");
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_cv_cpuid=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+tcl_cv_cpuid=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $tcl_cv_cpuid" >&5
+echo "${ECHO_T}$tcl_cv_cpuid" >&6
+if test $tcl_cv_cpuid = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_CPUID 1
+_ACEOF
+
+fi
+
+#--------------------------------------------------------------------
+#	The statements below define a collection of symbols related to
+#	building libtcl as a shared library instead of a static library.
+#--------------------------------------------------------------------
+
+TCL_UNSHARED_LIB_SUFFIX=${UNSHARED_LIB_SUFFIX}
+TCL_SHARED_LIB_SUFFIX=${SHARED_LIB_SUFFIX}
+eval "TCL_LIB_FILE=libtcl${LIB_SUFFIX}"
+
+# tclConfig.sh needs a version of the _LIB_SUFFIX that has been eval'ed
+# since on some platforms TCL_LIB_FILE contains shell escapes.
+# (See also: TCL_TRIM_DOTS).
+
+eval "TCL_LIB_FILE=${TCL_LIB_FILE}"
+
+TCL_LIBRARY='$(prefix)/lib/tcl$(VERSION)'
+PRIVATE_INCLUDE_DIR='$(includedir)'
+HTML_DIR='$(DISTDIR)/html'
+
+# Note:  in the following variable, it's important to use the absolute
+# path name of the Tcl directory rather than "..":  this is because
+# AIX remembers this path and will attempt to use it at run-time to look
+# up the Tcl library.
+
+if test "`uname -s`" = "Darwin" ; then
+
+    if test "`uname -s`" = "Darwin" ; then
+	echo "$as_me:$LINENO: checking how to package libraries" >&5
+echo $ECHO_N "checking how to package libraries... $ECHO_C" >&6
+	# Check whether --enable-framework or --disable-framework was given.
+if test "${enable_framework+set}" = set; then
+  enableval="$enable_framework"
+  enable_framework=$enableval
+else
+  enable_framework=no
+fi;
+	if test $enable_framework = yes; then
+	    if test $SHARED_BUILD = 0; then
+		{ echo "$as_me:$LINENO: WARNING: Frameworks can only be built if --enable-shared is yes" >&5
+echo "$as_me: WARNING: Frameworks can only be built if --enable-shared is yes" >&2;}
+		enable_framework=no
+	    fi
+	    if test $tcl_corefoundation = no; then
+		{ echo "$as_me:$LINENO: WARNING: Frameworks can only be used when CoreFoundation is available" >&5
+echo "$as_me: WARNING: Frameworks can only be used when CoreFoundation is available" >&2;}
+		enable_framework=no
+	    fi
+	fi
+	if test $enable_framework = yes; then
+	    echo "$as_me:$LINENO: result: framework" >&5
+echo "${ECHO_T}framework" >&6
+	    FRAMEWORK_BUILD=1
+	else
+	    if test $SHARED_BUILD = 1; then
+		echo "$as_me:$LINENO: result: shared library" >&5
+echo "${ECHO_T}shared library" >&6
+	    else
+		echo "$as_me:$LINENO: result: static library" >&5
+echo "${ECHO_T}static library" >&6
+	    fi
+	    FRAMEWORK_BUILD=0
+	fi
+    fi
+
+    TCL_SHLIB_LD_EXTRAS="-compatibility_version ${TCL_VERSION} -current_version ${TCL_VERSION}`echo ${TCL_PATCH_LEVEL} | awk '{match($0, "\\\.[0-9]+"); print substr($0,RSTART,RLENGTH)}'`"
+    TCL_SHLIB_LD_EXTRAS="${TCL_SHLIB_LD_EXTRAS}"' -install_name "${DYLIB_INSTALL_DIR}"/${TCL_LIB_FILE}'
+    echo "$LDFLAGS " | grep -q -- '-prebind ' && TCL_SHLIB_LD_EXTRAS="${TCL_SHLIB_LD_EXTRAS}"' -seg1addr 0xa000000'
+    TCL_SHLIB_LD_EXTRAS="${TCL_SHLIB_LD_EXTRAS}"' -sectcreate __TEXT __info_plist Tcl-Info.plist'
+    EXTRA_TCLSH_LIBS='-sectcreate __TEXT __info_plist Tclsh-Info.plist'
+    EXTRA_APP_CC_SWITCHES='-mdynamic-no-pic'
+                        ac_config_files="$ac_config_files Tcl-Info.plist:../macosx/Tcl-Info.plist.in Tclsh-Info.plist:../macosx/Tclsh-Info.plist.in"
+
+    TCL_YEAR="`date +%Y`"
+fi
+
+if test "$FRAMEWORK_BUILD" = "1" ; then
+
+cat >>confdefs.h <<\_ACEOF
+#define TCL_FRAMEWORK 1
+_ACEOF
+
+    # Construct a fake local framework structure to make linking with
+    # '-framework Tcl' and running of tcltest work
+              ac_config_commands="$ac_config_commands Tcl.framework"
+
+    LD_LIBRARY_PATH_VAR="DYLD_FRAMEWORK_PATH"
+    # default install directory for bundled packages
+    if test "${libdir}" = '${exec_prefix}/lib' -o "`basename ${libdir}`" = 'Frameworks'; then
+        PACKAGE_DIR="/Library/Tcl"
+    else
+        PACKAGE_DIR="$libdir"
+    fi
+    if test "${libdir}" = '${exec_prefix}/lib'; then
+        # override libdir default
+        libdir="/Library/Frameworks"
+    fi
+    TCL_LIB_FILE="Tcl"
+    TCL_LIB_FLAG="-framework Tcl"
+    TCL_BUILD_LIB_SPEC="-F`pwd | sed -e 's/ /\\\\ /g'` -framework Tcl"
+    TCL_LIB_SPEC="-F${libdir} -framework Tcl"
+    libdir="${libdir}/Tcl.framework/Versions/\${VERSION}"
+    TCL_LIBRARY="${libdir}/Resources/Scripts"
+    includedir="${libdir}/Headers"
+    PRIVATE_INCLUDE_DIR="${libdir}/PrivateHeaders"
+    HTML_DIR="${libdir}/Resources/Documentation/Reference/Tcl"
+    EXTRA_INSTALL="install-private-headers html-tcl"
+    EXTRA_BUILD_HTML='@ln -fs contents.htm "$(HTML_INSTALL_DIR)"/TclTOC.html'
+    EXTRA_INSTALL_BINARIES='@echo "Installing Info.plist to $(LIB_INSTALL_DIR)/Resources/" && $(INSTALL_DATA_DIR) "$(LIB_INSTALL_DIR)/Resources" && $(INSTALL_DATA) Tcl-Info.plist "$(LIB_INSTALL_DIR)/Resources/Info.plist"'
+    EXTRA_INSTALL_BINARIES="$EXTRA_INSTALL_BINARIES"' && echo "Installing license.terms to $(LIB_INSTALL_DIR)/Resources/" && $(INSTALL_DATA) "$(TOP_DIR)/license.terms" "$(LIB_INSTALL_DIR)/Resources"'
+    EXTRA_INSTALL_BINARIES="$EXTRA_INSTALL_BINARIES"' && echo "Finalizing Tcl.framework" && rm -f "$(LIB_INSTALL_DIR)/../Current" && ln -s "$(VERSION)" "$(LIB_INSTALL_DIR)/../Current" && for f in "$(LIB_FILE)" tclConfig.sh Resources Headers PrivateHeaders; do rm -f "$(LIB_INSTALL_DIR)/../../$$f" && ln -s "Versions/Current/$$f" "$(LIB_INSTALL_DIR)/../.."; done && f="$(STUB_LIB_FILE)" && rm -f "$(LIB_INSTALL_DIR)/../../$$f" && ln -s "Versions/$(VERSION)/$$f" "$(LIB_INSTALL_DIR)/../.."'
+    # Don't use AC_DEFINE for the following as the framework version define
+    # needs to go into the Makefile even when using autoheader, so that we
+    # can pick up a potential make override of VERSION. Also, don't put this
+    # into CFLAGS as it should not go into tclConfig.sh
+    EXTRA_CC_SWITCHES='-DTCL_FRAMEWORK_VERSION=\"$(VERSION)\"'
+else
+    # libdir must be a fully qualified path and not ${exec_prefix}/lib
+    eval libdir="$libdir"
+    # default install directory for bundled packages
+    PACKAGE_DIR="$libdir"
+    if test "${TCL_LIB_VERSIONS_OK}" = "ok"; then
+        TCL_LIB_FLAG="-ltcl${TCL_VERSION}"
+    else
+        TCL_LIB_FLAG="-ltcl`echo ${TCL_VERSION} | tr -d .`"
+    fi
+    TCL_BUILD_LIB_SPEC="-L`pwd | sed -e 's/ /\\\\ /g'` ${TCL_LIB_FLAG}"
+    TCL_LIB_SPEC="-L${libdir} ${TCL_LIB_FLAG}"
+fi
+VERSION='${VERSION}'
+eval "CFG_TCL_SHARED_LIB_SUFFIX=${TCL_SHARED_LIB_SUFFIX}"
+eval "CFG_TCL_UNSHARED_LIB_SUFFIX=${TCL_UNSHARED_LIB_SUFFIX}"
+VERSION=${TCL_VERSION}
+
+#--------------------------------------------------------------------
+#	The statements below define the symbol TCL_PACKAGE_PATH, which
+#	gives a list of directories that may contain packages.  The list
+#	consists of one directory for machine-dependent binaries and
+#	another for platform-independent scripts.
+#--------------------------------------------------------------------
+
+if test "$FRAMEWORK_BUILD" = "1" ; then
+    test -z "$TCL_PACKAGE_PATH" && \
+	TCL_PACKAGE_PATH="~/Library/Tcl /Library/Tcl /System/Library/Tcl ~/Library/Frameworks /Library/Frameworks /System/Library/Frameworks"
+    test -z "$TCL_MODULE_PATH"  && \
+	TCL_MODULE_PATH="~/Library/Tcl /Library/Tcl /System/Library/Tcl"
+elif test "$prefix/lib" != "$libdir"; then
+    TCL_PACKAGE_PATH="${libdir} ${prefix}/lib ${TCL_PACKAGE_PATH}"
+else
+    TCL_PACKAGE_PATH="${prefix}/lib ${TCL_PACKAGE_PATH}"
+fi
+
+#--------------------------------------------------------------------
+#       The statements below define various symbols relating to Tcl
+#       stub support.
+#--------------------------------------------------------------------
+
+# Replace ${VERSION} with contents of ${TCL_VERSION}
+# double-eval to account for TCL_TRIM_DOTS.
+#
+eval "TCL_STUB_LIB_FILE=libtclstub${TCL_UNSHARED_LIB_SUFFIX}"
+eval "TCL_STUB_LIB_FILE=\"${TCL_STUB_LIB_FILE}\""
+eval "TCL_STUB_LIB_DIR=${libdir}"
+
+if test "${TCL_LIB_VERSIONS_OK}" = "ok"; then
+    TCL_STUB_LIB_FLAG="-ltclstub${TCL_VERSION}"
+else
+    TCL_STUB_LIB_FLAG="-ltclstub`echo ${TCL_VERSION} | tr -d .`"
+fi
+
+TCL_BUILD_STUB_LIB_SPEC="-L`pwd | sed -e 's/ /\\\\ /g'` ${TCL_STUB_LIB_FLAG}"
+TCL_STUB_LIB_SPEC="-L${TCL_STUB_LIB_DIR} ${TCL_STUB_LIB_FLAG}"
+TCL_BUILD_STUB_LIB_PATH="`pwd`/${TCL_STUB_LIB_FILE}"
+TCL_STUB_LIB_PATH="${TCL_STUB_LIB_DIR}/${TCL_STUB_LIB_FILE}"
+
+# Install time header dir can be set via --includedir
+eval "TCL_INCLUDE_SPEC=\"-I${includedir}\""
+
+#------------------------------------------------------------------------
+# tclConfig.sh refers to this by a different name
+#------------------------------------------------------------------------
+
+TCL_SHARED_BUILD=${SHARED_BUILD}
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+                                        ac_config_files="$ac_config_files Makefile:../unix/Makefile.in dltest/Makefile:../unix/dltest/Makefile.in tclConfig.sh:../unix/tclConfig.sh.in tcl.pc:../unix/tcl.pc.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, don't put newlines in cache variables' values.
+# 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.
+{
+  (set) 2>&1 |
+    case `(ac_space=' '; set | grep ac_space) 2>&1` in
+    *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 \
+	"s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1=\\2/p"
+      ;;
+    esac;
+} |
+  sed '
+     t clear
+     : clear
+     s/^\([^=]*\)=\(.*[{}].*\)$/test "${\1+set}" = set || &/
+     t end
+     /^ac_cv_env/!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" && echo "updating cache $cache_file"
+    cat confcache >$cache_file
+  else
+    echo "not updating unwritable cache $cache_file"
+  fi
+fi
+rm -f confcache
+
+test "x$prefix" = xNONE && prefix=$ac_default_prefix
+# Let make expand exec_prefix.
+test "x$exec_prefix" = xNONE && exec_prefix='${prefix}'
+
+# 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
+
+# Transform confdefs.h into DEFS.
+# Protect against shell expansion while executing Makefile rules.
+# Protect against Makefile macro expansion.
+#
+# If the first sed substitution is executed (which looks for macros that
+# take arguments), then we branch to the quote section.  Otherwise,
+# look for a macro that doesn't take arguments.
+cat >confdef2opt.sed <<\_ACEOF
+t clear
+: clear
+s,^[	 ]*#[	 ]*define[	 ][	 ]*\([^	 (][^	 (]*([^)]*)\)[	 ]*\(.*\),-D\1=\2,g
+t quote
+s,^[	 ]*#[	 ]*define[	 ][	 ]*\([^	 ][^	 ]*\)[	 ]*\(.*\),-D\1=\2,g
+t quote
+d
+: quote
+s,[	 `~#$^&*(){}\\|;'"<>?],\\&,g
+s,\[,\\&,g
+s,\],\\&,g
+s,\$,$$,g
+p
+_ACEOF
+# We use echo to avoid assuming a particular line-breaking character.
+# The extra dot is to prevent the shell from consuming trailing
+# line-breaks from the sub-command output.  A line-break within
+# single-quotes doesn't work because, if this script is created in a
+# platform that uses two characters for line-breaks (e.g., DOS), tr
+# would break.
+ac_LF_and_DOT=`echo; echo .`
+DEFS=`sed -n -f confdef2opt.sed confdefs.h | tr "$ac_LF_and_DOT" ' .'`
+rm -f confdef2opt.sed
+
+
+
+CFLAGS="${CFLAGS} ${CPPFLAGS}"; CPPFLAGS=""
+
+: ${CONFIG_STATUS=./config.status}
+ac_clean_files_save=$ac_clean_files
+ac_clean_files="$ac_clean_files $CONFIG_STATUS"
+{ echo "$as_me:$LINENO: creating $CONFIG_STATUS" >&5
+echo "$as_me: creating $CONFIG_STATUS" >&6;}
+cat >$CONFIG_STATUS <<_ACEOF
+#! $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}
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF
+## --------------------- ##
+## M4sh Initialization.  ##
+## --------------------- ##
+
+# Be Bourne compatible
+if test -n "${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 '${1+"$@"}'='"$@"'
+elif test -n "${BASH_VERSION+set}" && (set -o posix) >/dev/null 2>&1; then
+  set -o posix
+fi
+DUALCASE=1; export DUALCASE # for MKS sh
+
+# Support unset when possible.
+if ( (MAIL=60; unset MAIL) || exit) >/dev/null 2>&1; then
+  as_unset=unset
+else
+  as_unset=false
+fi
+
+
+# Work around bugs in pre-3.0 UWIN ksh.
+$as_unset ENV MAIL MAILPATH
+PS1='$ '
+PS2='> '
+PS4='+ '
+
+# NLS nuisances.
+for as_var in \
+  LANG LANGUAGE LC_ADDRESS LC_ALL LC_COLLATE LC_CTYPE LC_IDENTIFICATION \
+  LC_MEASUREMENT LC_MESSAGES LC_MONETARY LC_NAME LC_NUMERIC LC_PAPER \
+  LC_TELEPHONE LC_TIME
+do
+  if (set +x; test -z "`(eval $as_var=C; export $as_var) 2>&1`"); then
+    eval $as_var=C; export $as_var
+  else
+    $as_unset $as_var
+  fi
+done
+
+# Required to use basename.
+if expr a : '\(a\)' >/dev/null 2>&1; 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
+
+
+# Name of the executable.
+as_me=`$as_basename "$0" ||
+$as_expr X/"$0" : '.*/\([^/][^/]*\)/*$' \| \
+	 X"$0" : 'X\(//\)$' \| \
+	 X"$0" : 'X\(/\)$' \| \
+	 .     : '\(.\)' 2>/dev/null ||
+echo X/"$0" |
+    sed '/^.*\/\([^/][^/]*\)\/*$/{ s//\1/; q; }
+  	  /^X\/\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\/\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+
+
+# PATH needs CR, and LINENO needs CR and PATH.
+# 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
+
+# The user is always right.
+if test "${PATH_SEPARATOR+set}" != set; then
+  echo "#! /bin/sh" >conf$$.sh
+  echo  "exit 0"   >>conf$$.sh
+  chmod +x conf$$.sh
+  if (PATH="/nonexistent;."; conf$$.sh) >/dev/null 2>&1; then
+    PATH_SEPARATOR=';'
+  else
+    PATH_SEPARATOR=:
+  fi
+  rm -f conf$$.sh
+fi
+
+
+  as_lineno_1=$LINENO
+  as_lineno_2=$LINENO
+  as_lineno_3=`(expr $as_lineno_1 + 1) 2>/dev/null`
+  test "x$as_lineno_1" != "x$as_lineno_2" &&
+  test "x$as_lineno_3"  = "x$as_lineno_2"  || {
+  # Find who we are.  Look in the path if we contain no path at all
+  # relative or not.
+  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/$0 && break
+done
+
+       ;;
+  esac
+  # We did not find ourselves, most probably we were run as `sh COMMAND'
+  # in which case we are not to be found in the path.
+  if test "x$as_myself" = x; then
+    as_myself=$0
+  fi
+  if test ! -f "$as_myself"; then
+    { { echo "$as_me:$LINENO: error: cannot find myself; rerun with an absolute path" >&5
+echo "$as_me: error: cannot find myself; rerun with an absolute path" >&2;}
+   { (exit 1); exit 1; }; }
+  fi
+  case $CONFIG_SHELL in
+  '')
+    as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in /bin$PATH_SEPARATOR/usr/bin$PATH_SEPARATOR$PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for as_base in sh bash ksh sh5; do
+	 case $as_dir in
+	 /*)
+	   if ("$as_dir/$as_base" -c '
+  as_lineno_1=$LINENO
+  as_lineno_2=$LINENO
+  as_lineno_3=`(expr $as_lineno_1 + 1) 2>/dev/null`
+  test "x$as_lineno_1" != "x$as_lineno_2" &&
+  test "x$as_lineno_3"  = "x$as_lineno_2" ') 2>/dev/null; then
+	     $as_unset BASH_ENV || test "${BASH_ENV+set}" != set || { BASH_ENV=; export BASH_ENV; }
+	     $as_unset ENV || test "${ENV+set}" != set || { ENV=; export ENV; }
+	     CONFIG_SHELL=$as_dir/$as_base
+	     export CONFIG_SHELL
+	     exec "$CONFIG_SHELL" "$0" ${1+"$@"}
+	   fi;;
+	 esac
+       done
+done
+;;
+  esac
+
+  # Create $as_me.lineno as a copy of $as_myself, but with $LINENO
+  # uniformly replaced by the line number.  The first 'sed' inserts a
+  # line-number line before each line; the second 'sed' does the real
+  # work.  The second script uses 'N' to pair each line-number line
+  # with the numbered line, and appends trailing '-' during
+  # substitution so that $LINENO is not a special case at line end.
+  # (Raja R Harinath suggested sed '=', and Paul Eggert wrote the
+  # second 'sed' script.  Blame Lee E. McMahon for sed's syntax.  :-)
+  sed '=' <$as_myself |
+    sed '
+      N
+      s,$,-,
+      : loop
+      s,^\(['$as_cr_digits']*\)\(.*\)[$]LINENO\([^'$as_cr_alnum'_]\),\1\2\1\3,
+      t loop
+      s,-$,,
+      s,^['$as_cr_digits']*\n,,
+    ' >$as_me.lineno &&
+  chmod +x $as_me.lineno ||
+    { { echo "$as_me:$LINENO: error: cannot create $as_me.lineno; rerun with a POSIX shell" >&5
+echo "$as_me: error: cannot create $as_me.lineno; rerun with a POSIX shell" >&2;}
+   { (exit 1); exit 1; }; }
+
+  # Don't try to exec as it changes $[0], causing all sort of problems
+  # (the dirname of $[0] is not the place where we might find the
+  # original and so on.  Autoconf is especially sensible to this).
+  . ./$as_me.lineno
+  # Exit status is that of the last command.
+  exit
+}
+
+
+case `echo "testing\c"; echo 1,2,3`,`echo -n testing; echo 1,2,3` in
+  *c*,-n*) ECHO_N= ECHO_C='
+' ECHO_T='	' ;;
+  *c*,*  ) ECHO_N=-n ECHO_C= ECHO_T= ;;
+  *)       ECHO_N= ECHO_C='\c' ECHO_T= ;;
+esac
+
+if expr a : '\(a\)' >/dev/null 2>&1; then
+  as_expr=expr
+else
+  as_expr=false
+fi
+
+rm -f conf$$ conf$$.exe conf$$.file
+echo >conf$$.file
+if ln -s conf$$.file conf$$ 2>/dev/null; then
+  # We could just check for DJGPP; but this test a) works b) is more generic
+  # and c) will remain valid once DJGPP supports symlinks (DJGPP 2.04).
+  if test -f conf$$.exe; then
+    # Don't use ln at all; we don't have any links
+    as_ln_s='cp -p'
+  else
+    as_ln_s='ln -s'
+  fi
+elif ln conf$$.file conf$$ 2>/dev/null; then
+  as_ln_s=ln
+else
+  as_ln_s='cp -p'
+fi
+rm -f conf$$ conf$$.exe conf$$.file
+
+if mkdir -p . 2>/dev/null; then
+  as_mkdir_p=:
+else
+  test -d ./-p && rmdir ./-p
+  as_mkdir_p=false
+fi
+
+as_executable_p="test -f"
+
+# 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'"
+
+
+# IFS
+# We need space, tab and new line, in precisely that order.
+as_nl='
+'
+IFS=" 	$as_nl"
+
+# CDPATH.
+$as_unset CDPATH
+
+exec 6>&1
+
+# Open the log real soon, to keep \$[0] and so on meaningful, and to
+# report actual input values of CONFIG_FILES etc. instead of their
+# values after options handling.  Logging --version etc. is OK.
+exec 5>>config.log
+{
+  echo
+  sed 'h;s/./-/g;s/^.../## /;s/...$/ ##/;p;x;p;x' <<_ASBOX
+## Running $as_me. ##
+_ASBOX
+} >&5
+cat >&5 <<_CSEOF
+
+This file was extended by tcl $as_me 8.6, which was
+generated by GNU Autoconf 2.59.  Invocation command line was
+
+  CONFIG_FILES    = $CONFIG_FILES
+  CONFIG_HEADERS  = $CONFIG_HEADERS
+  CONFIG_LINKS    = $CONFIG_LINKS
+  CONFIG_COMMANDS = $CONFIG_COMMANDS
+  $ $0 $@
+
+_CSEOF
+echo "on `(hostname || uname -n) 2>/dev/null | sed 1q`" >&5
+echo >&5
+_ACEOF
+
+# Files that config.status was made for.
+if test -n "$ac_config_files"; then
+  echo "config_files=\"$ac_config_files\"" >>$CONFIG_STATUS
+fi
+
+if test -n "$ac_config_headers"; then
+  echo "config_headers=\"$ac_config_headers\"" >>$CONFIG_STATUS
+fi
+
+if test -n "$ac_config_links"; then
+  echo "config_links=\"$ac_config_links\"" >>$CONFIG_STATUS
+fi
+
+if test -n "$ac_config_commands"; then
+  echo "config_commands=\"$ac_config_commands\"" >>$CONFIG_STATUS
+fi
+
+cat >>$CONFIG_STATUS <<\_ACEOF
+
+ac_cs_usage="\
+\`$as_me' instantiates files from templates according to the
+current configuration.
+
+Usage: $0 [OPTIONS] [FILE]...
+
+  -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
+      --recheck    update $as_me by reconfiguring in the same conditions
+  --file=FILE[:TEMPLATE]
+		   instantiate the configuration file FILE
+
+Configuration files:
+$config_files
+
+Configuration commands:
+$config_commands
+
+Report bugs to <bug-autoconf@gnu.org>."
+_ACEOF
+
+cat >>$CONFIG_STATUS <<_ACEOF
+ac_cs_version="\\
+tcl config.status 8.6
+configured by $0, generated by GNU Autoconf 2.59,
+  with options \\"`echo "$ac_configure_args" | sed 's/[\\""\`\$]/\\\\&/g'`\\"
+
+Copyright (C) 2003 Free Software Foundation, Inc.
+This config.status script is free software; the Free Software Foundation
+gives unlimited permission to copy, distribute and modify it."
+srcdir=$srcdir
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF
+# If no file are specified by the user, then we need to provide default
+# value.  By we need to know if files were specified by the user.
+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
+    ;;
+  *) # This is not an option, so the user has probably given explicit
+     # arguments.
+     ac_option=$1
+     ac_need_defaults=false;;
+  esac
+
+  case $ac_option in
+  # Handling of the options.
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF
+  -recheck | --recheck | --rechec | --reche | --rech | --rec | --re | --r)
+    ac_cs_recheck=: ;;
+  --version | --vers* | -V )
+    echo "$ac_cs_version"; exit 0 ;;
+  --he | --h)
+    # Conflict between --help and --header
+    { { echo "$as_me:$LINENO: error: ambiguous option: $1
+Try \`$0 --help' for more information." >&5
+echo "$as_me: error: ambiguous option: $1
+Try \`$0 --help' for more information." >&2;}
+   { (exit 1); exit 1; }; };;
+  --help | --hel | -h )
+    echo "$ac_cs_usage"; exit 0 ;;
+  --debug | --d* | -d )
+    debug=: ;;
+  --file | --fil | --fi | --f )
+    $ac_shift
+    CONFIG_FILES="$CONFIG_FILES $ac_optarg"
+    ac_need_defaults=false;;
+  --header | --heade | --head | --hea )
+    $ac_shift
+    CONFIG_HEADERS="$CONFIG_HEADERS $ac_optarg"
+    ac_need_defaults=false;;
+  -q | -quiet | --quiet | --quie | --qui | --qu | --q \
+  | -silent | --silent | --silen | --sile | --sil | --si | --s)
+    ac_cs_silent=: ;;
+
+  # This is an error.
+  -*) { { echo "$as_me:$LINENO: error: unrecognized option: $1
+Try \`$0 --help' for more information." >&5
+echo "$as_me: error: unrecognized option: $1
+Try \`$0 --help' for more information." >&2;}
+   { (exit 1); exit 1; }; } ;;
+
+  *) ac_config_targets="$ac_config_targets $1" ;;
+
+  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
+if \$ac_cs_recheck; then
+  echo "running $SHELL $0 " $ac_configure_args \$ac_configure_extra_args " --no-create --no-recursion" >&6
+  exec $SHELL $0 $ac_configure_args \$ac_configure_extra_args --no-create --no-recursion
+fi
+
+_ACEOF
+
+cat >>$CONFIG_STATUS <<_ACEOF
+#
+# INIT-COMMANDS section.
+#
+
+VERSION=${TCL_VERSION}
+
+_ACEOF
+
+
+
+cat >>$CONFIG_STATUS <<\_ACEOF
+for ac_config_target in $ac_config_targets
+do
+  case "$ac_config_target" in
+  # Handling of arguments.
+  "Tcl-Info.plist" ) CONFIG_FILES="$CONFIG_FILES Tcl-Info.plist:../macosx/Tcl-Info.plist.in" ;;
+  "Tclsh-Info.plist" ) CONFIG_FILES="$CONFIG_FILES Tclsh-Info.plist:../macosx/Tclsh-Info.plist.in" ;;
+  "Makefile" ) CONFIG_FILES="$CONFIG_FILES Makefile:../unix/Makefile.in" ;;
+  "dltest/Makefile" ) CONFIG_FILES="$CONFIG_FILES dltest/Makefile:../unix/dltest/Makefile.in" ;;
+  "tclConfig.sh" ) CONFIG_FILES="$CONFIG_FILES tclConfig.sh:../unix/tclConfig.sh.in" ;;
+  "tcl.pc" ) CONFIG_FILES="$CONFIG_FILES tcl.pc:../unix/tcl.pc.in" ;;
+  "Tcl.framework" ) CONFIG_COMMANDS="$CONFIG_COMMANDS Tcl.framework" ;;
+  *) { { echo "$as_me:$LINENO: error: invalid argument: $ac_config_target" >&5
+echo "$as_me: error: invalid argument: $ac_config_target" >&2;}
+   { (exit 1); exit 1; }; };;
+  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_COMMANDS+set}" = set || CONFIG_COMMANDS=$config_commands
+fi
+
+# Have a temporary directory for convenience.  Make it in the build tree
+# simply because there is no reason to put it here, and in addition,
+# creating and moving files from /tmp can sometimes cause problems.
+# Create a temporary directory, and hook for its removal unless debugging.
+$debug ||
+{
+  trap 'exit_status=$?; rm -rf $tmp && exit $exit_status' 0
+  trap '{ (exit 1); exit 1; }' 1 2 13 15
+}
+
+# Create a (secure) tmp directory for tmp files.
+
+{
+  tmp=`(umask 077 && mktemp -d -q "./confstatXXXXXX") 2>/dev/null` &&
+  test -n "$tmp" && test -d "$tmp"
+}  ||
+{
+  tmp=./confstat$$-$RANDOM
+  (umask 077 && mkdir $tmp)
+} ||
+{
+   echo "$me: cannot create a temporary directory in ." >&2
+   { (exit 1); exit 1; }
+}
+
+_ACEOF
+
+cat >>$CONFIG_STATUS <<_ACEOF
+
+#
+# CONFIG_FILES section.
+#
+
+# No need to generate the scripts if there are no CONFIG_FILES.
+# This happens for instance when ./config.status config.h
+if test -n "\$CONFIG_FILES"; then
+  # Protect against being on the right side of a sed subst in config.status.
+  sed 's/,@/@@/; s/@,/@@/; s/,;t t\$/@;t t/; /@;t t\$/s/[\\\\&,]/\\\\&/g;
+   s/@@/,@/; s/@@/@,/; s/@;t t\$/,;t t/' >\$tmp/subs.sed <<\\CEOF
+s,@SHELL@,$SHELL,;t t
+s,@PATH_SEPARATOR@,$PATH_SEPARATOR,;t t
+s,@PACKAGE_NAME@,$PACKAGE_NAME,;t t
+s,@PACKAGE_TARNAME@,$PACKAGE_TARNAME,;t t
+s,@PACKAGE_VERSION@,$PACKAGE_VERSION,;t t
+s,@PACKAGE_STRING@,$PACKAGE_STRING,;t t
+s,@PACKAGE_BUGREPORT@,$PACKAGE_BUGREPORT,;t t
+s,@exec_prefix@,$exec_prefix,;t t
+s,@prefix@,$prefix,;t t
+s,@program_transform_name@,$program_transform_name,;t t
+s,@bindir@,$bindir,;t t
+s,@sbindir@,$sbindir,;t t
+s,@libexecdir@,$libexecdir,;t t
+s,@datadir@,$datadir,;t t
+s,@sysconfdir@,$sysconfdir,;t t
+s,@sharedstatedir@,$sharedstatedir,;t t
+s,@localstatedir@,$localstatedir,;t t
+s,@libdir@,$libdir,;t t
+s,@includedir@,$includedir,;t t
+s,@oldincludedir@,$oldincludedir,;t t
+s,@infodir@,$infodir,;t t
+s,@mandir@,$mandir,;t t
+s,@build_alias@,$build_alias,;t t
+s,@host_alias@,$host_alias,;t t
+s,@target_alias@,$target_alias,;t t
+s,@DEFS@,$DEFS,;t t
+s,@ECHO_C@,$ECHO_C,;t t
+s,@ECHO_N@,$ECHO_N,;t t
+s,@ECHO_T@,$ECHO_T,;t t
+s,@LIBS@,$LIBS,;t t
+s,@MAN_FLAGS@,$MAN_FLAGS,;t t
+s,@CC@,$CC,;t t
+s,@CFLAGS@,$CFLAGS,;t t
+s,@LDFLAGS@,$LDFLAGS,;t t
+s,@CPPFLAGS@,$CPPFLAGS,;t t
+s,@ac_ct_CC@,$ac_ct_CC,;t t
+s,@EXEEXT@,$EXEEXT,;t t
+s,@OBJEXT@,$OBJEXT,;t t
+s,@CPP@,$CPP,;t t
+s,@EGREP@,$EGREP,;t t
+s,@TCL_THREADS@,$TCL_THREADS,;t t
+s,@TCLSH_PROG@,$TCLSH_PROG,;t t
+s,@ZLIB_OBJS@,$ZLIB_OBJS,;t t
+s,@ZLIB_SRCS@,$ZLIB_SRCS,;t t
+s,@ZLIB_INCLUDE@,$ZLIB_INCLUDE,;t t
+s,@RANLIB@,$RANLIB,;t t
+s,@ac_ct_RANLIB@,$ac_ct_RANLIB,;t t
+s,@AR@,$AR,;t t
+s,@ac_ct_AR@,$ac_ct_AR,;t t
+s,@LIBOBJS@,$LIBOBJS,;t t
+s,@TCL_LIBS@,$TCL_LIBS,;t t
+s,@DL_LIBS@,$DL_LIBS,;t t
+s,@DL_OBJS@,$DL_OBJS,;t t
+s,@PLAT_OBJS@,$PLAT_OBJS,;t t
+s,@PLAT_SRCS@,$PLAT_SRCS,;t t
+s,@LDAIX_SRC@,$LDAIX_SRC,;t t
+s,@CFLAGS_DEBUG@,$CFLAGS_DEBUG,;t t
+s,@CFLAGS_OPTIMIZE@,$CFLAGS_OPTIMIZE,;t t
+s,@CFLAGS_WARNING@,$CFLAGS_WARNING,;t t
+s,@LDFLAGS_DEBUG@,$LDFLAGS_DEBUG,;t t
+s,@LDFLAGS_OPTIMIZE@,$LDFLAGS_OPTIMIZE,;t t
+s,@CC_SEARCH_FLAGS@,$CC_SEARCH_FLAGS,;t t
+s,@LD_SEARCH_FLAGS@,$LD_SEARCH_FLAGS,;t t
+s,@STLIB_LD@,$STLIB_LD,;t t
+s,@SHLIB_LD@,$SHLIB_LD,;t t
+s,@TCL_SHLIB_LD_EXTRAS@,$TCL_SHLIB_LD_EXTRAS,;t t
+s,@TK_SHLIB_LD_EXTRAS@,$TK_SHLIB_LD_EXTRAS,;t t
+s,@SHLIB_LD_LIBS@,$SHLIB_LD_LIBS,;t t
+s,@SHLIB_CFLAGS@,$SHLIB_CFLAGS,;t t
+s,@SHLIB_SUFFIX@,$SHLIB_SUFFIX,;t t
+s,@MAKE_LIB@,$MAKE_LIB,;t t
+s,@MAKE_STUB_LIB@,$MAKE_STUB_LIB,;t t
+s,@INSTALL_LIB@,$INSTALL_LIB,;t t
+s,@DLL_INSTALL_DIR@,$DLL_INSTALL_DIR,;t t
+s,@INSTALL_STUB_LIB@,$INSTALL_STUB_LIB,;t t
+s,@CFLAGS_DEFAULT@,$CFLAGS_DEFAULT,;t t
+s,@LDFLAGS_DEFAULT@,$LDFLAGS_DEFAULT,;t t
+s,@DTRACE@,$DTRACE,;t t
+s,@TCL_VERSION@,$TCL_VERSION,;t t
+s,@TCL_MAJOR_VERSION@,$TCL_MAJOR_VERSION,;t t
+s,@TCL_MINOR_VERSION@,$TCL_MINOR_VERSION,;t t
+s,@TCL_PATCH_LEVEL@,$TCL_PATCH_LEVEL,;t t
+s,@TCL_YEAR@,$TCL_YEAR,;t t
+s,@PKG_CFG_ARGS@,$PKG_CFG_ARGS,;t t
+s,@TCL_LIB_FILE@,$TCL_LIB_FILE,;t t
+s,@TCL_LIB_FLAG@,$TCL_LIB_FLAG,;t t
+s,@TCL_LIB_SPEC@,$TCL_LIB_SPEC,;t t
+s,@TCL_STUB_LIB_FILE@,$TCL_STUB_LIB_FILE,;t t
+s,@TCL_STUB_LIB_FLAG@,$TCL_STUB_LIB_FLAG,;t t
+s,@TCL_STUB_LIB_SPEC@,$TCL_STUB_LIB_SPEC,;t t
+s,@TCL_STUB_LIB_PATH@,$TCL_STUB_LIB_PATH,;t t
+s,@TCL_INCLUDE_SPEC@,$TCL_INCLUDE_SPEC,;t t
+s,@TCL_BUILD_STUB_LIB_SPEC@,$TCL_BUILD_STUB_LIB_SPEC,;t t
+s,@TCL_BUILD_STUB_LIB_PATH@,$TCL_BUILD_STUB_LIB_PATH,;t t
+s,@TCL_SRC_DIR@,$TCL_SRC_DIR,;t t
+s,@CFG_TCL_SHARED_LIB_SUFFIX@,$CFG_TCL_SHARED_LIB_SUFFIX,;t t
+s,@CFG_TCL_UNSHARED_LIB_SUFFIX@,$CFG_TCL_UNSHARED_LIB_SUFFIX,;t t
+s,@TCL_SHARED_BUILD@,$TCL_SHARED_BUILD,;t t
+s,@LD_LIBRARY_PATH_VAR@,$LD_LIBRARY_PATH_VAR,;t t
+s,@TCL_BUILD_LIB_SPEC@,$TCL_BUILD_LIB_SPEC,;t t
+s,@TCL_LIB_VERSIONS_OK@,$TCL_LIB_VERSIONS_OK,;t t
+s,@TCL_SHARED_LIB_SUFFIX@,$TCL_SHARED_LIB_SUFFIX,;t t
+s,@TCL_UNSHARED_LIB_SUFFIX@,$TCL_UNSHARED_LIB_SUFFIX,;t t
+s,@TCL_HAS_LONGLONG@,$TCL_HAS_LONGLONG,;t t
+s,@INSTALL_TZDATA@,$INSTALL_TZDATA,;t t
+s,@DTRACE_SRC@,$DTRACE_SRC,;t t
+s,@DTRACE_HDR@,$DTRACE_HDR,;t t
+s,@DTRACE_OBJ@,$DTRACE_OBJ,;t t
+s,@MAKEFILE_SHELL@,$MAKEFILE_SHELL,;t t
+s,@BUILD_DLTEST@,$BUILD_DLTEST,;t t
+s,@TCL_PACKAGE_PATH@,$TCL_PACKAGE_PATH,;t t
+s,@TCL_MODULE_PATH@,$TCL_MODULE_PATH,;t t
+s,@TCL_LIBRARY@,$TCL_LIBRARY,;t t
+s,@PRIVATE_INCLUDE_DIR@,$PRIVATE_INCLUDE_DIR,;t t
+s,@HTML_DIR@,$HTML_DIR,;t t
+s,@PACKAGE_DIR@,$PACKAGE_DIR,;t t
+s,@EXTRA_CC_SWITCHES@,$EXTRA_CC_SWITCHES,;t t
+s,@EXTRA_APP_CC_SWITCHES@,$EXTRA_APP_CC_SWITCHES,;t t
+s,@EXTRA_INSTALL@,$EXTRA_INSTALL,;t t
+s,@EXTRA_INSTALL_BINARIES@,$EXTRA_INSTALL_BINARIES,;t t
+s,@EXTRA_BUILD_HTML@,$EXTRA_BUILD_HTML,;t t
+s,@EXTRA_TCLSH_LIBS@,$EXTRA_TCLSH_LIBS,;t t
+s,@DLTEST_LD@,$DLTEST_LD,;t t
+s,@DLTEST_SUFFIX@,$DLTEST_SUFFIX,;t t
+CEOF
+
+_ACEOF
+
+  cat >>$CONFIG_STATUS <<\_ACEOF
+  # Split the substitutions into bite-sized pieces for seds with
+  # small command number limits, like on Digital OSF/1 and HP-UX.
+  ac_max_sed_lines=48
+  ac_sed_frag=1 # Number of current file.
+  ac_beg=1 # First line for current file.
+  ac_end=$ac_max_sed_lines # Line after last line for current file.
+  ac_more_lines=:
+  ac_sed_cmds=
+  while $ac_more_lines; do
+    if test $ac_beg -gt 1; then
+      sed "1,${ac_beg}d; ${ac_end}q" $tmp/subs.sed >$tmp/subs.frag
+    else
+      sed "${ac_end}q" $tmp/subs.sed >$tmp/subs.frag
+    fi
+    if test ! -s $tmp/subs.frag; then
+      ac_more_lines=false
+    else
+      # The purpose of the label and of the branching condition is to
+      # speed up the sed processing (if there are no `@' at all, there
+      # is no need to browse any of the substitutions).
+      # These are the two extra sed commands mentioned above.
+      (echo ':t
+  /@[a-zA-Z_][a-zA-Z_0-9]*@/!b' && cat $tmp/subs.frag) >$tmp/subs-$ac_sed_frag.sed
+      if test -z "$ac_sed_cmds"; then
+	ac_sed_cmds="sed -f $tmp/subs-$ac_sed_frag.sed"
+      else
+	ac_sed_cmds="$ac_sed_cmds | sed -f $tmp/subs-$ac_sed_frag.sed"
+      fi
+      ac_sed_frag=`expr $ac_sed_frag + 1`
+      ac_beg=$ac_end
+      ac_end=`expr $ac_end + $ac_max_sed_lines`
+    fi
+  done
+  if test -z "$ac_sed_cmds"; then
+    ac_sed_cmds=cat
+  fi
+fi # test -n "$CONFIG_FILES"
+
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF
+for ac_file in : $CONFIG_FILES; do test "x$ac_file" = x: && continue
+  # Support "outfile[:infile[:infile...]]", defaulting infile="outfile.in".
+  case $ac_file in
+  - | *:- | *:-:* ) # input from stdin
+	cat >$tmp/stdin
+	ac_file_in=`echo "$ac_file" | sed 's,[^:]*:,,'`
+	ac_file=`echo "$ac_file" | sed 's,:.*,,'` ;;
+  *:* ) ac_file_in=`echo "$ac_file" | sed 's,[^:]*:,,'`
+	ac_file=`echo "$ac_file" | sed 's,:.*,,'` ;;
+  * )   ac_file_in=$ac_file.in ;;
+  esac
+
+  # Compute @srcdir@, @top_srcdir@, and @INSTALL@ for subdirectories.
+  ac_dir=`(dirname "$ac_file") 2>/dev/null ||
+$as_expr X"$ac_file" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$ac_file" : 'X\(//\)[^/]' \| \
+	 X"$ac_file" : 'X\(//\)$' \| \
+	 X"$ac_file" : 'X\(/\)' \| \
+	 .     : '\(.\)' 2>/dev/null ||
+echo X"$ac_file" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ s//\1/; q; }
+  	  /^X\(\/\/\)[^/].*/{ s//\1/; q; }
+  	  /^X\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+  { if $as_mkdir_p; then
+    mkdir -p "$ac_dir"
+  else
+    as_dir="$ac_dir"
+    as_dirs=
+    while test ! -d "$as_dir"; do
+      as_dirs="$as_dir $as_dirs"
+      as_dir=`(dirname "$as_dir") 2>/dev/null ||
+$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$as_dir" : 'X\(//\)[^/]' \| \
+	 X"$as_dir" : 'X\(//\)$' \| \
+	 X"$as_dir" : 'X\(/\)' \| \
+	 .     : '\(.\)' 2>/dev/null ||
+echo X"$as_dir" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ s//\1/; q; }
+  	  /^X\(\/\/\)[^/].*/{ s//\1/; q; }
+  	  /^X\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+    done
+    test ! -n "$as_dirs" || mkdir $as_dirs
+  fi || { { echo "$as_me:$LINENO: error: cannot create directory \"$ac_dir\"" >&5
+echo "$as_me: error: cannot create directory \"$ac_dir\"" >&2;}
+   { (exit 1); exit 1; }; }; }
+
+  ac_builddir=.
+
+if test "$ac_dir" != .; then
+  ac_dir_suffix=/`echo "$ac_dir" | sed 's,^\.[\\/],,'`
+  # A "../" for each directory in $ac_dir_suffix.
+  ac_top_builddir=`echo "$ac_dir_suffix" | sed 's,/[^\\/]*,../,g'`
+else
+  ac_dir_suffix= ac_top_builddir=
+fi
+
+case $srcdir in
+  .)  # No --srcdir option.  We are building in place.
+    ac_srcdir=.
+    if test -z "$ac_top_builddir"; then
+       ac_top_srcdir=.
+    else
+       ac_top_srcdir=`echo $ac_top_builddir | sed 's,/$,,'`
+    fi ;;
+  [\\/]* | ?:[\\/]* )  # Absolute path.
+    ac_srcdir=$srcdir$ac_dir_suffix;
+    ac_top_srcdir=$srcdir ;;
+  *) # Relative path.
+    ac_srcdir=$ac_top_builddir$srcdir$ac_dir_suffix
+    ac_top_srcdir=$ac_top_builddir$srcdir ;;
+esac
+
+# Do not use `cd foo && pwd` to compute absolute paths, because
+# the directories may not exist.
+case `pwd` in
+.) ac_abs_builddir="$ac_dir";;
+*)
+  case "$ac_dir" in
+  .) ac_abs_builddir=`pwd`;;
+  [\\/]* | ?:[\\/]* ) ac_abs_builddir="$ac_dir";;
+  *) ac_abs_builddir=`pwd`/"$ac_dir";;
+  esac;;
+esac
+case $ac_abs_builddir in
+.) ac_abs_top_builddir=${ac_top_builddir}.;;
+*)
+  case ${ac_top_builddir}. in
+  .) ac_abs_top_builddir=$ac_abs_builddir;;
+  [\\/]* | ?:[\\/]* ) ac_abs_top_builddir=${ac_top_builddir}.;;
+  *) ac_abs_top_builddir=$ac_abs_builddir/${ac_top_builddir}.;;
+  esac;;
+esac
+case $ac_abs_builddir in
+.) ac_abs_srcdir=$ac_srcdir;;
+*)
+  case $ac_srcdir in
+  .) ac_abs_srcdir=$ac_abs_builddir;;
+  [\\/]* | ?:[\\/]* ) ac_abs_srcdir=$ac_srcdir;;
+  *) ac_abs_srcdir=$ac_abs_builddir/$ac_srcdir;;
+  esac;;
+esac
+case $ac_abs_builddir in
+.) ac_abs_top_srcdir=$ac_top_srcdir;;
+*)
+  case $ac_top_srcdir in
+  .) ac_abs_top_srcdir=$ac_abs_builddir;;
+  [\\/]* | ?:[\\/]* ) ac_abs_top_srcdir=$ac_top_srcdir;;
+  *) ac_abs_top_srcdir=$ac_abs_builddir/$ac_top_srcdir;;
+  esac;;
+esac
+
+
+
+  if test x"$ac_file" != x-; then
+    { echo "$as_me:$LINENO: creating $ac_file" >&5
+echo "$as_me: creating $ac_file" >&6;}
+    rm -f "$ac_file"
+  fi
+  # Let's still pretend it is `configure' which instantiates (i.e., don't
+  # use $as_me), people would be surprised to read:
+  #    /* config.h.  Generated by config.status.  */
+  if test x"$ac_file" = x-; then
+    configure_input=
+  else
+    configure_input="$ac_file.  "
+  fi
+  configure_input=$configure_input"Generated from `echo $ac_file_in |
+				     sed 's,.*/,,'` by configure."
+
+  # First look for the input files in the build tree, otherwise in the
+  # src tree.
+  ac_file_inputs=`IFS=:
+    for f in $ac_file_in; do
+      case $f in
+      -) echo $tmp/stdin ;;
+      [\\/$]*)
+	 # Absolute (can't be DOS-style, as IFS=:)
+	 test -f "$f" || { { echo "$as_me:$LINENO: error: cannot find input file: $f" >&5
+echo "$as_me: error: cannot find input file: $f" >&2;}
+   { (exit 1); exit 1; }; }
+	 echo "$f";;
+      *) # Relative
+	 if test -f "$f"; then
+	   # Build tree
+	   echo "$f"
+	 elif test -f "$srcdir/$f"; then
+	   # Source tree
+	   echo "$srcdir/$f"
+	 else
+	   # /dev/null tree
+	   { { echo "$as_me:$LINENO: error: cannot find input file: $f" >&5
+echo "$as_me: error: cannot find input file: $f" >&2;}
+   { (exit 1); exit 1; }; }
+	 fi;;
+      esac
+    done` || { (exit 1); exit 1; }
+_ACEOF
+cat >>$CONFIG_STATUS <<_ACEOF
+  sed "$ac_vpsub
+$extrasub
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF
+:t
+/@[a-zA-Z_][a-zA-Z_0-9]*@/!b
+s,@configure_input@,$configure_input,;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,@top_builddir@,$ac_top_builddir,;t t
+s,@abs_top_builddir@,$ac_abs_top_builddir,;t t
+" $ac_file_inputs | (eval "$ac_sed_cmds") >$tmp/out
+  rm -f $tmp/stdin
+  if test x"$ac_file" != x-; then
+    mv $tmp/out $ac_file
+  else
+    cat $tmp/out
+    rm -f $tmp/out
+  fi
+
+done
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF
+
+#
+# CONFIG_COMMANDS section.
+#
+for ac_file in : $CONFIG_COMMANDS; do test "x$ac_file" = x: && continue
+  ac_dest=`echo "$ac_file" | sed 's,:.*,,'`
+  ac_source=`echo "$ac_file" | sed 's,[^:]*:,,'`
+  ac_dir=`(dirname "$ac_dest") 2>/dev/null ||
+$as_expr X"$ac_dest" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$ac_dest" : 'X\(//\)[^/]' \| \
+	 X"$ac_dest" : 'X\(//\)$' \| \
+	 X"$ac_dest" : 'X\(/\)' \| \
+	 .     : '\(.\)' 2>/dev/null ||
+echo X"$ac_dest" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ s//\1/; q; }
+  	  /^X\(\/\/\)[^/].*/{ s//\1/; q; }
+  	  /^X\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+  { if $as_mkdir_p; then
+    mkdir -p "$ac_dir"
+  else
+    as_dir="$ac_dir"
+    as_dirs=
+    while test ! -d "$as_dir"; do
+      as_dirs="$as_dir $as_dirs"
+      as_dir=`(dirname "$as_dir") 2>/dev/null ||
+$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$as_dir" : 'X\(//\)[^/]' \| \
+	 X"$as_dir" : 'X\(//\)$' \| \
+	 X"$as_dir" : 'X\(/\)' \| \
+	 .     : '\(.\)' 2>/dev/null ||
+echo X"$as_dir" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ s//\1/; q; }
+  	  /^X\(\/\/\)[^/].*/{ s//\1/; q; }
+  	  /^X\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+    done
+    test ! -n "$as_dirs" || mkdir $as_dirs
+  fi || { { echo "$as_me:$LINENO: error: cannot create directory \"$ac_dir\"" >&5
+echo "$as_me: error: cannot create directory \"$ac_dir\"" >&2;}
+   { (exit 1); exit 1; }; }; }
+
+  ac_builddir=.
+
+if test "$ac_dir" != .; then
+  ac_dir_suffix=/`echo "$ac_dir" | sed 's,^\.[\\/],,'`
+  # A "../" for each directory in $ac_dir_suffix.
+  ac_top_builddir=`echo "$ac_dir_suffix" | sed 's,/[^\\/]*,../,g'`
+else
+  ac_dir_suffix= ac_top_builddir=
+fi
+
+case $srcdir in
+  .)  # No --srcdir option.  We are building in place.
+    ac_srcdir=.
+    if test -z "$ac_top_builddir"; then
+       ac_top_srcdir=.
+    else
+       ac_top_srcdir=`echo $ac_top_builddir | sed 's,/$,,'`
+    fi ;;
+  [\\/]* | ?:[\\/]* )  # Absolute path.
+    ac_srcdir=$srcdir$ac_dir_suffix;
+    ac_top_srcdir=$srcdir ;;
+  *) # Relative path.
+    ac_srcdir=$ac_top_builddir$srcdir$ac_dir_suffix
+    ac_top_srcdir=$ac_top_builddir$srcdir ;;
+esac
+
+# Do not use `cd foo && pwd` to compute absolute paths, because
+# the directories may not exist.
+case `pwd` in
+.) ac_abs_builddir="$ac_dir";;
+*)
+  case "$ac_dir" in
+  .) ac_abs_builddir=`pwd`;;
+  [\\/]* | ?:[\\/]* ) ac_abs_builddir="$ac_dir";;
+  *) ac_abs_builddir=`pwd`/"$ac_dir";;
+  esac;;
+esac
+case $ac_abs_builddir in
+.) ac_abs_top_builddir=${ac_top_builddir}.;;
+*)
+  case ${ac_top_builddir}. in
+  .) ac_abs_top_builddir=$ac_abs_builddir;;
+  [\\/]* | ?:[\\/]* ) ac_abs_top_builddir=${ac_top_builddir}.;;
+  *) ac_abs_top_builddir=$ac_abs_builddir/${ac_top_builddir}.;;
+  esac;;
+esac
+case $ac_abs_builddir in
+.) ac_abs_srcdir=$ac_srcdir;;
+*)
+  case $ac_srcdir in
+  .) ac_abs_srcdir=$ac_abs_builddir;;
+  [\\/]* | ?:[\\/]* ) ac_abs_srcdir=$ac_srcdir;;
+  *) ac_abs_srcdir=$ac_abs_builddir/$ac_srcdir;;
+  esac;;
+esac
+case $ac_abs_builddir in
+.) ac_abs_top_srcdir=$ac_top_srcdir;;
+*)
+  case $ac_top_srcdir in
+  .) ac_abs_top_srcdir=$ac_abs_builddir;;
+  [\\/]* | ?:[\\/]* ) ac_abs_top_srcdir=$ac_top_srcdir;;
+  *) ac_abs_top_srcdir=$ac_abs_builddir/$ac_top_srcdir;;
+  esac;;
+esac
+
+
+  { echo "$as_me:$LINENO: executing $ac_dest commands" >&5
+echo "$as_me: executing $ac_dest commands" >&6;}
+  case $ac_dest in
+    Tcl.framework ) n=Tcl &&
+        f=$n.framework && v=Versions/$VERSION &&
+        rm -rf $f && mkdir -p $f/$v/Resources &&
+        ln -s $v/$n $v/Resources $f && ln -s ../../../$n $f/$v &&
+        ln -s ../../../../$n-Info.plist $f/$v/Resources/Info.plist &&
+        unset n f v
+     ;;
+  esac
+done
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF
+
+{ (exit 0); exit 0; }
+_ACEOF
+chmod +x $CONFIG_STATUS
+ac_clean_files=$ac_clean_files_save
+
+
+# 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.
+  $ac_cs_success || { (exit 1); exit 1; }
+fi
+
+
diff --git a/tcl8.6/unix/configure.in b/tcl8.6/unix/configure.in
new file mode 100755
index 0000000..61e408f
--- /dev/null
+++ b/tcl8.6/unix/configure.in
@@ -0,0 +1,978 @@
+#! /bin/bash -norc
+dnl	This file is an input file used by the GNU "autoconf" program to
+dnl	generate the file "configure", which is run during Tcl installation
+dnl	to configure the system for the local environment.
+
+AC_INIT([tcl],[8.6])
+AC_PREREQ(2.59)
+
+dnl This is only used when included from macosx/configure.ac
+m4_ifdef([SC_USE_CONFIG_HEADERS], [
+    AC_CONFIG_HEADERS([tclConfig.h:../unix/tclConfig.h.in])
+    AC_CONFIG_COMMANDS_PRE([DEFS="-DHAVE_TCL_CONFIG_H  -imacros tclConfig.h"])
+    AH_TOP([
+    #ifndef _TCLCONFIG
+    #define _TCLCONFIG])
+    AH_BOTTOM([
+    /* Undef unused package specific autoheader defines so that we can
+     * include both tclConfig.h and tkConfig.h at the same time: */
+    /* override */ #undef PACKAGE_NAME
+    /* override */ #undef PACKAGE_STRING
+    /* override */ #undef PACKAGE_TARNAME
+    #endif /* _TCLCONFIG */])
+])
+
+TCL_VERSION=8.6
+TCL_MAJOR_VERSION=8
+TCL_MINOR_VERSION=6
+TCL_PATCH_LEVEL=".9"
+VERSION=${TCL_VERSION}
+
+EXTRA_INSTALL_BINARIES=${EXTRA_INSTALL_BINARIES:-"@:"}
+EXTRA_BUILD_HTML=${EXTRA_BUILD_HTML:-"@:"}
+
+#------------------------------------------------------------------------
+# Setup configure arguments for bundled packages
+#------------------------------------------------------------------------
+
+PKG_CFG_ARGS="$ac_configure_args ${PKG_CFG_ARGS}"
+
+if test -r "$cache_file" -a -f "$cache_file"; then
+    case $cache_file in
+	[[\\/]]* | ?:[[\\/]]* ) pkg_cache_file=$cache_file ;;
+	*) pkg_cache_file=../../$cache_file ;;
+    esac
+    PKG_CFG_ARGS="${PKG_CFG_ARGS} --cache-file=$pkg_cache_file"
+fi
+
+#------------------------------------------------------------------------
+# Empty slate for bundled packages, to avoid stale configuration
+#------------------------------------------------------------------------
+#rm -Rf pkgs
+if test -f Makefile; then
+    make distclean-packages
+fi
+
+#------------------------------------------------------------------------
+# Handle the --prefix=... option
+#------------------------------------------------------------------------
+
+if test "${prefix}" = "NONE"; then
+    prefix=/usr/local
+fi
+if test "${exec_prefix}" = "NONE"; then
+    exec_prefix=$prefix
+fi
+# Make sure srcdir is fully qualified!
+srcdir="`cd "$srcdir" ; pwd`"
+TCL_SRC_DIR="`cd "$srcdir"/..; pwd`"
+
+#------------------------------------------------------------------------
+# Compress and/or soft link the manpages?
+#------------------------------------------------------------------------
+
+SC_CONFIG_MANPAGES
+
+#------------------------------------------------------------------------
+# Standard compiler checks
+#------------------------------------------------------------------------
+
+# If the user did not set CFLAGS, set it now to keep
+# the AC_PROG_CC macro from adding "-g -O2".
+if test "${CFLAGS+set}" != "set" ; then
+    CFLAGS=""
+fi
+
+AC_PROG_CC
+AC_C_INLINE
+
+#--------------------------------------------------------------------
+# Supply substitutes for missing POSIX header files.  Special notes:
+#	- stdlib.h doesn't define strtol, strtoul, or
+#	  strtod insome versions of SunOS
+#	- some versions of string.h don't declare procedures such
+#	  as strstr
+# Do this early, otherwise an autoconf bug throws errors on configure
+#--------------------------------------------------------------------
+
+SC_MISSING_POSIX_HEADERS
+
+#--------------------------------------------------------------------
+# Determines the correct executable file extension (.exe)
+#--------------------------------------------------------------------
+
+AC_EXEEXT
+
+#------------------------------------------------------------------------
+# If we're using GCC, see if the compiler understands -pipe.  If so, use it.
+# It makes compiling go faster.  (This is only a performance feature.)
+#------------------------------------------------------------------------
+
+if test -z "$no_pipe" && test -n "$GCC"; then
+    AC_CACHE_CHECK([if the compiler understands -pipe],
+	tcl_cv_cc_pipe, [
+	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -pipe"
+	AC_TRY_COMPILE(,, tcl_cv_cc_pipe=yes, tcl_cv_cc_pipe=no)
+	CFLAGS=$hold_cflags])
+    if test $tcl_cv_cc_pipe = yes; then
+	CFLAGS="$CFLAGS -pipe"
+    fi
+fi
+
+#------------------------------------------------------------------------
+# Threads support
+#------------------------------------------------------------------------
+
+SC_ENABLE_THREADS
+
+#------------------------------------------------------------------------
+# Embedded configuration information, encoding to use for the values, TIP #59
+#------------------------------------------------------------------------
+
+SC_TCL_CFG_ENCODING
+
+#--------------------------------------------------------------------
+# Look for libraries that we will need when compiling the Tcl shell
+#--------------------------------------------------------------------
+
+SC_TCL_LINK_LIBS
+
+# Add the threads support libraries
+LIBS="$LIBS$THREADS_LIBS"
+
+SC_ENABLE_SHARED
+
+#--------------------------------------------------------------------
+# Look for a native installed tclsh binary (if available)
+# If one cannot be found then use the binary we build (fails for
+# cross compiling). This is used for NATIVE_TCLSH in Makefile.
+#--------------------------------------------------------------------
+
+SC_PROG_TCLSH
+if test "$TCLSH_PROG" = ""; then
+  TCLSH_PROG='./${TCL_EXE}'
+fi
+
+#------------------------------------------------------------------------
+#	Add stuff for zlib
+#------------------------------------------------------------------------
+
+zlib_ok=yes
+AC_CHECK_HEADER([zlib.h],[
+  AC_CHECK_TYPE([gz_header],[],[zlib_ok=no],[#include <zlib.h>])],[
+  zlib_ok=no])
+AS_IF([test $zlib_ok = yes], [
+  AC_SEARCH_LIBS([deflateSetHeader],[z],[],[
+    zlib_ok=no
+  ])])
+AS_IF([test $zlib_ok = no], [
+  AC_SUBST(ZLIB_OBJS,[\${ZLIB_OBJS}])
+  AC_SUBST(ZLIB_SRCS,[\${ZLIB_SRCS}])
+  AC_SUBST(ZLIB_INCLUDE,[-I\${ZLIB_DIR}])
+])
+AC_DEFINE(HAVE_ZLIB, 1, [Is there an installed zlib?])
+
+#--------------------------------------------------------------------
+# The statements below define a collection of compile flags.  This
+# macro depends on the value of SHARED_BUILD, and should be called
+# after SC_ENABLE_SHARED checks the configure switches.
+#--------------------------------------------------------------------
+
+SC_CONFIG_CFLAGS
+
+SC_ENABLE_SYMBOLS(bccdebug)
+
+AC_DEFINE(TCL_TOMMATH, 1, [Build libtommath?])
+AC_DEFINE(MP_PREC, 4, [Default libtommath precision.])
+
+#--------------------------------------------------------------------
+#	Detect what compiler flags to set for 64-bit support.
+#--------------------------------------------------------------------
+
+SC_TCL_EARLY_FLAGS
+
+SC_TCL_64BIT_FLAGS
+
+#--------------------------------------------------------------------
+#	Check endianness because we can optimize comparisons of
+#	Tcl_UniChar strings to memcmp on big-endian systems.
+#--------------------------------------------------------------------
+
+AC_C_BIGENDIAN
+
+#--------------------------------------------------------------------
+#	Supply substitutes for missing POSIX library procedures, or
+#	set flags so Tcl uses alternate procedures.
+#--------------------------------------------------------------------
+
+# Check if Posix compliant getcwd exists, if not we'll use getwd.
+AC_CHECK_FUNCS(getcwd, , [AC_DEFINE(USEGETWD, 1, [Is getcwd Posix-compliant?])])
+# Nb: if getcwd uses popen and pwd(1) (like SunOS 4) we should really
+# define USEGETWD even if the posix getcwd exists. Add a test ?
+
+AC_REPLACE_FUNCS(mkstemp opendir strtol waitpid)
+AC_CHECK_FUNC(strerror, , [AC_DEFINE(NO_STRERROR, 1, [Do we have strerror()])])
+AC_CHECK_FUNC(getwd, , [AC_DEFINE(NO_GETWD, 1, [Do we have getwd()])])
+AC_CHECK_FUNC(wait3, , [AC_DEFINE(NO_WAIT3, 1, [Do we have wait3()])])
+AC_CHECK_FUNC(uname, , [AC_DEFINE(NO_UNAME, 1, [Do we have uname()])])
+
+if test "`uname -s`" = "Darwin" && test "${TCL_THREADS}" = 1 && \
+	test "`uname -r | awk -F. '{print [$]1}'`" -lt 7; then
+    # prior to Darwin 7, realpath is not threadsafe, so don't
+    # use it when threads are enabled, c.f. bug # 711232
+    ac_cv_func_realpath=no
+fi
+AC_CHECK_FUNC(realpath, , [AC_DEFINE(NO_REALPATH, 1, [Do we have realpath()])])
+
+SC_TCL_IPV6
+
+#--------------------------------------------------------------------
+#	Look for thread-safe variants of some library functions.
+#--------------------------------------------------------------------
+
+if test "${TCL_THREADS}" = 1; then
+    SC_TCL_GETPWUID_R
+    SC_TCL_GETPWNAM_R
+    SC_TCL_GETGRGID_R
+    SC_TCL_GETGRNAM_R
+    if test "`uname -s`" = "Darwin" && \
+	    test "`uname -r | awk -F. '{print [$]1}'`" -gt 5; then
+	# Starting with Darwin 6 (Mac OSX 10.2), gethostbyX
+	# are actually MT-safe as they always return pointers
+	# from TSD instead of static storage.
+	AC_DEFINE(HAVE_MTSAFE_GETHOSTBYNAME, 1,
+		[Do we have MT-safe gethostbyname() ?])
+	AC_DEFINE(HAVE_MTSAFE_GETHOSTBYADDR, 1,
+		[Do we have MT-safe gethostbyaddr() ?])
+
+    elif test "`uname -s`" = "HP-UX" && \
+	      test "`uname -r|sed -e 's|B\.||' -e 's|\..*$||'`" -gt 10; then
+        # Starting with HPUX 11.00 (we believe), gethostbyX
+        # are actually MT-safe as they always return pointers
+	# from TSD instead of static storage.
+	AC_DEFINE(HAVE_MTSAFE_GETHOSTBYNAME, 1,
+		[Do we have MT-safe gethostbyname() ?])
+	AC_DEFINE(HAVE_MTSAFE_GETHOSTBYADDR, 1,
+		[Do we have MT-safe gethostbyaddr() ?])
+
+    else
+	SC_TCL_GETHOSTBYNAME_R
+	SC_TCL_GETHOSTBYADDR_R
+    fi
+fi
+
+#---------------------------------------------------------------------------
+#	Check for serial port interface.
+#
+#	termios.h is present on all POSIX systems.
+#	sys/ioctl.h is almost always present, though what it contains
+#	is system-specific.
+#	sys/modem.h is needed on HP-UX.
+#---------------------------------------------------------------------------
+
+AC_CHECK_HEADERS(termios.h)
+AC_CHECK_HEADERS(sys/ioctl.h)
+AC_CHECK_HEADERS(sys/modem.h)
+
+#--------------------------------------------------------------------
+#	Include sys/select.h if it exists and if it supplies things
+#	that appear to be useful and aren't already in sys/types.h.
+#	This appears to be true only on the RS/6000 under AIX.  Some
+#	systems like OSF/1 have a sys/select.h that's of no use, and
+#	other systems like SCO UNIX have a sys/select.h that's
+#	pernicious.  If "fd_set" isn't defined anywhere then set a
+#	special flag.
+#--------------------------------------------------------------------
+
+AC_CACHE_CHECK([for fd_set in sys/types], tcl_cv_type_fd_set, [
+    AC_TRY_COMPILE([#include <sys/types.h>],[fd_set readMask, writeMask;],
+	tcl_cv_type_fd_set=yes, tcl_cv_type_fd_set=no)])
+tcl_ok=$tcl_cv_type_fd_set
+if test $tcl_ok = no; then
+    AC_CACHE_CHECK([for fd_mask in sys/select], tcl_cv_grep_fd_mask, [
+	AC_EGREP_HEADER(fd_mask, sys/select.h,
+	     tcl_cv_grep_fd_mask=present, tcl_cv_grep_fd_mask=missing)])
+    if test $tcl_cv_grep_fd_mask = present; then
+	AC_DEFINE(HAVE_SYS_SELECT_H, 1, [Should we include <sys/select.h>?])
+	tcl_ok=yes
+    fi
+fi
+if test $tcl_ok = no; then
+    AC_DEFINE(NO_FD_SET, 1, [Do we have fd_set?])
+fi
+
+#------------------------------------------------------------------------------
+#       Find out all about time handling differences.
+#------------------------------------------------------------------------------
+
+SC_TIME_HANDLER
+
+#--------------------------------------------------------------------
+#	Some systems (e.g., IRIX 4.0.5) lack some fields in struct stat. But
+#	we might be able to use fstatfs instead. Some systems (OpenBSD?) also
+#	lack blkcnt_t.
+#--------------------------------------------------------------------
+
+if test "$ac_cv_cygwin" != "yes"; then
+    AC_CHECK_MEMBERS([struct stat.st_blocks, struct stat.st_blksize])
+fi
+AC_CHECK_TYPES([blkcnt_t])
+AC_CHECK_FUNC(fstatfs, , [AC_DEFINE(NO_FSTATFS, 1, [Do we have fstatfs()?])])
+
+#--------------------------------------------------------------------
+#       Some system have no memcmp or it does not work with 8 bit data, this
+#       checks it and add memcmp.o to LIBOBJS if needed
+#--------------------------------------------------------------------
+
+AC_FUNC_MEMCMP
+
+#--------------------------------------------------------------------
+#       Some system like SunOS 4 and other BSD like systems have no memmove
+#       (we assume they have bcopy instead). {The replacement define is in
+#       compat/string.h}
+#--------------------------------------------------------------------
+
+AC_CHECK_FUNC(memmove, , [
+    AC_DEFINE(NO_MEMMOVE, 1, [Do we have memmove()?])
+    AC_DEFINE(NO_STRING_H, 1, [Do we have <string.h>?]) ])
+
+#--------------------------------------------------------------------
+#	On some systems strstr is broken: it returns a pointer even even if
+#	the original string is empty.
+#--------------------------------------------------------------------
+
+SC_TCL_CHECK_BROKEN_FUNC(strstr, [
+    extern int strstr();
+    exit(strstr("\0test", "test") ? 1 : 0);
+])
+
+#--------------------------------------------------------------------
+#	Check for strtoul function.  This is tricky because under some
+#	versions of AIX strtoul returns an incorrect terminator
+#	pointer for the string "0".
+#--------------------------------------------------------------------
+
+SC_TCL_CHECK_BROKEN_FUNC(strtoul, [
+    extern int strtoul();
+    char *term, *string = "0";
+    exit(strtoul(string,&term,0) != 0 || term != string+1);
+])
+
+#--------------------------------------------------------------------
+#	Check for various typedefs and provide substitutes if
+#	they don't exist.
+#--------------------------------------------------------------------
+
+AC_TYPE_MODE_T
+AC_TYPE_PID_T
+AC_TYPE_SIZE_T
+AC_TYPE_UID_T
+
+AC_CACHE_CHECK([for socklen_t], tcl_cv_type_socklen_t, [
+    AC_TRY_COMPILE([
+	#include <sys/types.h>
+	#include <sys/socket.h>
+    ],[
+    	socklen_t foo;
+    ],[tcl_cv_type_socklen_t=yes],[tcl_cv_type_socklen_t=no])])
+if test $tcl_cv_type_socklen_t = no; then
+    AC_DEFINE(socklen_t, int, [Define as int if socklen_t is not available])
+fi
+
+AC_CHECK_TYPE([intptr_t], [
+    AC_DEFINE([HAVE_INTPTR_T], 1, [Do we have the intptr_t type?])], [
+    AC_CACHE_CHECK([for pointer-size signed integer type], tcl_cv_intptr_t, [
+    for tcl_cv_intptr_t in "int" "long" "long long" none; do
+	if test "$tcl_cv_intptr_t" != none; then
+	    AC_COMPILE_IFELSE([AC_LANG_BOOL_COMPILE_TRY([AC_INCLUDES_DEFAULT],
+		    [[sizeof (void *) <= sizeof ($tcl_cv_intptr_t)]])],
+		[tcl_ok=yes], [tcl_ok=no])
+	    test "$tcl_ok" = yes && break; fi
+    done])
+    if test "$tcl_cv_intptr_t" != none; then
+	AC_DEFINE_UNQUOTED([intptr_t], [$tcl_cv_intptr_t], [Signed integer
+	   type wide enough to hold a pointer.])
+    fi
+])
+AC_CHECK_TYPE([uintptr_t], [
+    AC_DEFINE([HAVE_UINTPTR_T], 1, [Do we have the uintptr_t type?])], [
+    AC_CACHE_CHECK([for pointer-size unsigned integer type], tcl_cv_uintptr_t, [
+    for tcl_cv_uintptr_t in "unsigned int" "unsigned long" "unsigned long long" \
+	    none; do
+	if test "$tcl_cv_uintptr_t" != none; then
+	    AC_COMPILE_IFELSE([AC_LANG_BOOL_COMPILE_TRY([AC_INCLUDES_DEFAULT],
+		    [[sizeof (void *) <= sizeof ($tcl_cv_uintptr_t)]])],
+		[tcl_ok=yes], [tcl_ok=no])
+	    test "$tcl_ok" = yes && break; fi
+    done])
+    if test "$tcl_cv_uintptr_t" != none; then
+	AC_DEFINE_UNQUOTED([uintptr_t], [$tcl_cv_uintptr_t], [Unsigned integer
+	   type wide enough to hold a pointer.])
+    fi
+])
+
+#--------------------------------------------------------------------
+#	If a system doesn't have an opendir function (man, that's old!)
+#	then we have to supply a different version of dirent.h which
+#	is compatible with the substitute version of opendir that's
+#	provided.  This version only works with V7-style directories.
+#--------------------------------------------------------------------
+
+AC_CHECK_FUNC(opendir, , [AC_DEFINE(USE_DIRENT2_H, 1, [May we include <dirent2.h>?])])
+
+#--------------------------------------------------------------------
+#	The check below checks whether <sys/wait.h> defines the type
+#	"union wait" correctly.  It's needed because of weirdness in
+#	HP-UX where "union wait" is defined in both the BSD and SYS-V
+#	environments.  Checking the usability of WIFEXITED seems to do
+#	the trick.
+#--------------------------------------------------------------------
+
+AC_CACHE_CHECK([union wait], tcl_cv_union_wait, [
+    AC_TRY_LINK([#include <sys/types.h>
+#include <sys/wait.h>], [
+union wait x;
+WIFEXITED(x);		/* Generates compiler error if WIFEXITED
+			 * uses an int. */
+    ], tcl_cv_union_wait=yes, tcl_cv_union_wait=no)])
+if test $tcl_cv_union_wait = no; then
+    AC_DEFINE(NO_UNION_WAIT, 1, [Do we have a usable 'union wait'?])
+fi
+
+#--------------------------------------------------------------------
+#	Check whether there is an strncasecmp function on this system.
+#	This is a bit tricky because under SCO it's in -lsocket and
+#	under Sequent Dynix it's in -linet.
+#--------------------------------------------------------------------
+
+AC_CHECK_FUNC(strncasecmp, tcl_ok=1, tcl_ok=0)
+if test "$tcl_ok" = 0; then
+    AC_CHECK_LIB(socket, strncasecmp, tcl_ok=1, tcl_ok=0)
+fi
+if test "$tcl_ok" = 0; then
+    AC_CHECK_LIB(inet, strncasecmp, tcl_ok=1, tcl_ok=0)
+fi
+if test "$tcl_ok" = 0; then
+    AC_LIBOBJ([strncasecmp])
+    USE_COMPAT=1
+fi
+
+#--------------------------------------------------------------------
+#	The code below deals with several issues related to gettimeofday:
+#	1. Some systems don't provide a gettimeofday function at all
+#	   (set NO_GETTOD if this is the case).
+#	2. See if gettimeofday is declared in the <sys/time.h> header file.
+#	   if not, set the GETTOD_NOT_DECLARED flag so that tclPort.h can
+#	   declare it.
+#--------------------------------------------------------------------
+
+AC_CHECK_FUNC(gettimeofday,[],[
+    AC_DEFINE(NO_GETTOD, 1, [Do we have gettimeofday()?])
+])
+AC_CACHE_CHECK([for gettimeofday declaration], tcl_cv_grep_gettimeofday, [
+    AC_EGREP_HEADER(gettimeofday, sys/time.h,
+	tcl_cv_grep_gettimeofday=present, tcl_cv_grep_gettimeofday=missing)])
+if test $tcl_cv_grep_gettimeofday = missing ; then
+    AC_DEFINE(GETTOD_NOT_DECLARED, 1, [Is gettimeofday() actually declared in <sys/time.h>?])
+fi
+
+#--------------------------------------------------------------------
+#	The following code checks to see whether it is possible to get
+#	signed chars on this platform.  This is needed in order to
+#	properly generate sign-extended ints from character values.
+#--------------------------------------------------------------------
+
+AC_C_CHAR_UNSIGNED
+AC_CACHE_CHECK([signed char declarations], tcl_cv_char_signed, [
+    AC_TRY_COMPILE(, [
+	signed char *p;
+	p = 0;
+	], tcl_cv_char_signed=yes, tcl_cv_char_signed=no)])
+if test $tcl_cv_char_signed = yes; then
+    AC_DEFINE(HAVE_SIGNED_CHAR, 1, [Are characters signed?])
+fi
+
+#--------------------------------------------------------------------
+#  Does putenv() copy or not?  We need to know to avoid memory leaks.
+#--------------------------------------------------------------------
+
+AC_CACHE_CHECK([for a putenv() that copies the buffer], tcl_cv_putenv_copy, [
+    AC_TRY_RUN([
+	#include <stdlib.h>
+	#define OURVAR "havecopy=yes"
+	int main (int argc, char *argv[])
+	{
+	    char *foo, *bar;
+	    foo = (char *)strdup(OURVAR);
+	    putenv(foo);
+	    strcpy((char *)(strchr(foo, '=') + 1), "no");
+	    bar = getenv("havecopy");
+	    if (!strcmp(bar, "no")) {
+		/* doesnt copy */
+		return 0;
+	    } else {
+		/* does copy */
+		return 1;
+	    }
+	}
+    ],
+    tcl_cv_putenv_copy=no,
+    tcl_cv_putenv_copy=yes,
+    tcl_cv_putenv_copy=no)])
+if test $tcl_cv_putenv_copy = yes; then
+    AC_DEFINE(HAVE_PUTENV_THAT_COPIES, 1,
+	[Does putenv() copy strings or incorporate them by reference?])
+fi
+
+#--------------------------------------------------------------------
+# Check for support of nl_langinfo function
+#--------------------------------------------------------------------
+
+SC_ENABLE_LANGINFO
+
+#--------------------------------------------------------------------
+# Check for support of chflags and mkstemps functions
+#--------------------------------------------------------------------
+
+AC_CHECK_FUNCS(chflags mkstemps)
+
+#--------------------------------------------------------------------
+# Check for support of isnan() function or macro
+#--------------------------------------------------------------------
+
+AC_CACHE_CHECK([isnan], tcl_cv_isnan, [
+    AC_TRY_LINK([#include <math.h>], [
+isnan(0.0);			/* Generates an error if isnan is missing */
+], tcl_cv_isnan=yes, tcl_cv_isnan=no)])
+if test $tcl_cv_isnan = no; then
+    AC_DEFINE(NO_ISNAN, 1, [Do we have a usable 'isnan'?])
+fi
+
+#--------------------------------------------------------------------
+# Darwin specific API checks and defines
+#--------------------------------------------------------------------
+
+if test "`uname -s`" = "Darwin" ; then
+    AC_CHECK_FUNCS(getattrlist)
+    AC_CHECK_HEADERS(copyfile.h)
+    AC_CHECK_FUNCS(copyfile)
+    if test $tcl_corefoundation = yes; then
+	AC_CHECK_HEADERS(libkern/OSAtomic.h)
+	AC_CHECK_FUNCS(OSSpinLockLock)
+    fi
+    AC_DEFINE(USE_VFORK, 1, [Should we use vfork() instead of fork()?])
+    AC_DEFINE(TCL_DEFAULT_ENCODING, "utf-8",
+	[Are we to override what our default encoding is?])
+    AC_DEFINE(TCL_LOAD_FROM_MEMORY, 1,
+	[Can this platform load code from memory?])
+    AC_DEFINE(TCL_WIDE_CLICKS, 1,
+	[Does this platform have wide high-resolution clicks?])
+    AC_CHECK_HEADERS(AvailabilityMacros.h)
+    if test "$ac_cv_header_AvailabilityMacros_h" = yes; then
+	AC_CACHE_CHECK([if weak import is available], tcl_cv_cc_weak_import, [
+	    hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -Werror"
+	    AC_TRY_LINK([
+		    #ifdef __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__
+		    #if __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 1020
+		    #error __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 1020
+		    #endif
+		    #elif MAC_OS_X_VERSION_MIN_REQUIRED < 1020
+		    #error MAC_OS_X_VERSION_MIN_REQUIRED < 1020
+		    #endif
+		    int rand(void) __attribute__((weak_import));
+		], [rand();],
+		tcl_cv_cc_weak_import=yes, tcl_cv_cc_weak_import=no)
+	    CFLAGS=$hold_cflags])
+	if test $tcl_cv_cc_weak_import = yes; then
+	    AC_DEFINE(HAVE_WEAK_IMPORT, 1, [Is weak import available?])
+	fi
+	AC_CACHE_CHECK([if Darwin SUSv3 extensions are available],
+	    tcl_cv_cc_darwin_c_source, [
+	    hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -Werror"
+	    AC_TRY_COMPILE([
+		    #ifdef __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__
+		    #if __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 1050
+		    #error __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 1050
+		    #endif
+		    #elif MAC_OS_X_VERSION_MIN_REQUIRED < 1050
+		    #error MAC_OS_X_VERSION_MIN_REQUIRED < 1050
+		    #endif
+		    #define _DARWIN_C_SOURCE 1
+		    #include <sys/cdefs.h>
+		],,tcl_cv_cc_darwin_c_source=yes, tcl_cv_cc_darwin_c_source=no)
+	    CFLAGS=$hold_cflags])
+	if test $tcl_cv_cc_darwin_c_source = yes; then
+	    AC_DEFINE(_DARWIN_C_SOURCE, 1,
+		    [Are Darwin SUSv3 extensions available?])
+	fi
+    fi
+    # Build .bundle dltest binaries in addition to .dylib
+    DLTEST_LD='${CC} -bundle -Wl,-w ${CFLAGS} ${LDFLAGS}'
+    DLTEST_SUFFIX=".bundle"
+else
+    DLTEST_LD='${SHLIB_LD}'
+    DLTEST_SUFFIX=""
+fi
+
+#--------------------------------------------------------------------
+#	Check for support of fts functions (readdir replacement)
+#--------------------------------------------------------------------
+
+AC_CACHE_CHECK([for fts], tcl_cv_api_fts, [
+    AC_TRY_LINK([
+	    #include <sys/param.h>
+	    #include <sys/stat.h>
+	    #include <fts.h>
+	], [
+	    char*const p[2] = {"/", NULL};
+	    FTS *f = fts_open(p, FTS_PHYSICAL|FTS_NOCHDIR|FTS_NOSTAT, NULL);
+	    FTSENT *e = fts_read(f); fts_close(f);
+	], tcl_cv_api_fts=yes, tcl_cv_api_fts=no)])
+if test $tcl_cv_api_fts = yes; then
+    AC_DEFINE(HAVE_FTS, 1, [Do we have fts functions?])
+fi
+
+#--------------------------------------------------------------------
+#	The statements below check for systems where POSIX-style non-blocking
+#	I/O (O_NONBLOCK) doesn't work or is unimplemented. On these systems
+#	(mostly older ones), use the old BSD-style FIONBIO approach instead.
+#--------------------------------------------------------------------
+
+SC_BLOCKING_STYLE
+
+#------------------------------------------------------------------------
+
+AC_MSG_CHECKING([whether to use dll unloading])
+AC_ARG_ENABLE(dll-unloading,
+    AC_HELP_STRING([--enable-dll-unloading],
+	[enable the 'unload' command (default: on)]),
+    [tcl_ok=$enableval], [tcl_ok=yes])
+if test $tcl_ok = yes; then
+    AC_DEFINE(TCL_UNLOAD_DLLS, 1, [Do we allow unloading of shared libraries?])
+fi
+AC_MSG_RESULT([$tcl_ok])
+
+#------------------------------------------------------------------------
+#	Check whether the timezone data is supplied by the OS or has
+#	to be installed by Tcl. The default is autodetection, but can
+#	be overriden on the configure command line either way.
+#------------------------------------------------------------------------
+
+AC_MSG_CHECKING([for timezone data])
+AC_ARG_WITH(tzdata,
+    AC_HELP_STRING([--with-tzdata],
+	[install timezone data (default: autodetect)]),
+    [tcl_ok=$withval], [tcl_ok=auto])
+#
+# Any directories that get added here must also be added to the
+# search path in ::tcl::clock::Initialize (library/clock.tcl).
+#
+case $tcl_ok in
+    no)
+	AC_MSG_RESULT([supplied by OS vendor])
+    ;;
+    yes)
+	# nothing to do here
+    ;;
+    auto*)
+	AC_CACHE_VAL([tcl_cv_dir_zoneinfo], [
+	for dir in /usr/share/zoneinfo \
+		/usr/share/lib/zoneinfo \
+		/usr/lib/zoneinfo
+	do
+		if test -f $dir/UTC -o -f $dir/GMT
+		then
+			tcl_cv_dir_zoneinfo="$dir"
+			break
+		fi
+	done])
+	if test -n "$tcl_cv_dir_zoneinfo"; then
+	    tcl_ok=no
+	    AC_MSG_RESULT([$dir])
+	else
+	    tcl_ok=yes
+	fi
+    ;;
+    *)
+	AC_MSG_ERROR([invalid argument: $tcl_ok])
+    ;;
+esac
+if test $tcl_ok = yes
+then
+    AC_MSG_RESULT([supplied by Tcl])
+    INSTALL_TZDATA=install-tzdata
+fi
+
+#--------------------------------------------------------------------
+#	DTrace support
+#--------------------------------------------------------------------
+
+AC_ARG_ENABLE(dtrace,
+    AC_HELP_STRING([--enable-dtrace],
+	[build with DTrace support (default: off)]),
+    [tcl_ok=$enableval], [tcl_ok=no])
+if test $tcl_ok = yes; then
+    AC_CHECK_HEADER(sys/sdt.h, [tcl_ok=yes], [tcl_ok=no])
+fi
+if test $tcl_ok = yes; then
+    AC_PATH_PROG(DTRACE, dtrace,, [$PATH:/usr/sbin])
+    test -z "$ac_cv_path_DTRACE" && tcl_ok=no
+fi
+AC_MSG_CHECKING([whether to enable DTrace support])
+MAKEFILE_SHELL='/bin/sh'
+if test $tcl_ok = yes; then
+    AC_DEFINE(USE_DTRACE, 1, [Are we building with DTrace support?])
+    DTRACE_SRC="\${DTRACE_SRC}"
+    DTRACE_HDR="\${DTRACE_HDR}"
+    if test "`uname -s`" != "Darwin" ; then
+	DTRACE_OBJ="\${DTRACE_OBJ}"
+	if test "`uname -s`" = "SunOS" -a "$SHARED_BUILD" = "0" ; then
+	    # Need to create an intermediate object file to ensure tclDTrace.o
+	    # gets included when linking against the static tcl library.
+	    STLIB_LD='stlib_ld () { /usr/ccs/bin/ld -r -o $${1%.a}.o "$${@:2}" && '"${STLIB_LD}"' $${1} $${1%.a}.o ; } && stlib_ld'
+	    MAKEFILE_SHELL='/bin/bash'
+	    # Force use of Sun ar and ranlib, the GNU versions choke on
+	    # tclDTrace.o and the combined object file above.
+	    AR='/usr/ccs/bin/ar'
+	    RANLIB='/usr/ccs/bin/ranlib'
+	fi
+    fi
+fi
+AC_MSG_RESULT([$tcl_ok])
+
+#--------------------------------------------------------------------
+# The check below checks whether the cpuid instruction is usable.
+#--------------------------------------------------------------------
+
+AC_CACHE_CHECK([whether the cpuid instruction is usable], tcl_cv_cpuid, [
+    AC_TRY_LINK(, [
+	int index,regsPtr[4];
+    __asm__ __volatile__("mov %%ebx, %%edi     \n\t"
+                 "cpuid            \n\t"
+                 "mov %%ebx, %%esi   \n\t"
+                 "mov %%edi, %%ebx  \n\t"
+                 : "=a"(regsPtr[0]), "=S"(regsPtr[1]), "=c"(regsPtr[2]), "=d"(regsPtr[3])
+                 : "a"(index) : "edi");
+    ], tcl_cv_cpuid=yes, tcl_cv_cpuid=no)])
+if test $tcl_cv_cpuid = yes; then
+    AC_DEFINE(HAVE_CPUID, 1, [Is the cpuid instruction usable?])
+fi
+
+#--------------------------------------------------------------------
+#	The statements below define a collection of symbols related to
+#	building libtcl as a shared library instead of a static library.
+#--------------------------------------------------------------------
+
+TCL_UNSHARED_LIB_SUFFIX=${UNSHARED_LIB_SUFFIX}
+TCL_SHARED_LIB_SUFFIX=${SHARED_LIB_SUFFIX}
+eval "TCL_LIB_FILE=libtcl${LIB_SUFFIX}"
+
+# tclConfig.sh needs a version of the _LIB_SUFFIX that has been eval'ed
+# since on some platforms TCL_LIB_FILE contains shell escapes.
+# (See also: TCL_TRIM_DOTS).
+
+eval "TCL_LIB_FILE=${TCL_LIB_FILE}"
+
+TCL_LIBRARY='$(prefix)/lib/tcl$(VERSION)'
+PRIVATE_INCLUDE_DIR='$(includedir)'
+HTML_DIR='$(DISTDIR)/html'
+
+# Note:  in the following variable, it's important to use the absolute
+# path name of the Tcl directory rather than "..":  this is because
+# AIX remembers this path and will attempt to use it at run-time to look
+# up the Tcl library.
+
+if test "`uname -s`" = "Darwin" ; then
+    SC_ENABLE_FRAMEWORK
+    TCL_SHLIB_LD_EXTRAS="-compatibility_version ${TCL_VERSION} -current_version ${TCL_VERSION}`echo ${TCL_PATCH_LEVEL} | awk ['{match($0, "\\\.[0-9]+"); print substr($0,RSTART,RLENGTH)}']`"
+    TCL_SHLIB_LD_EXTRAS="${TCL_SHLIB_LD_EXTRAS}"' -install_name "${DYLIB_INSTALL_DIR}"/${TCL_LIB_FILE}'
+    echo "$LDFLAGS " | grep -q -- '-prebind ' && TCL_SHLIB_LD_EXTRAS="${TCL_SHLIB_LD_EXTRAS}"' -seg1addr 0xa000000'
+    TCL_SHLIB_LD_EXTRAS="${TCL_SHLIB_LD_EXTRAS}"' -sectcreate __TEXT __info_plist Tcl-Info.plist'
+    EXTRA_TCLSH_LIBS='-sectcreate __TEXT __info_plist Tclsh-Info.plist'
+    EXTRA_APP_CC_SWITCHES='-mdynamic-no-pic'
+    AC_CONFIG_FILES([Tcl-Info.plist:../macosx/Tcl-Info.plist.in Tclsh-Info.plist:../macosx/Tclsh-Info.plist.in])
+    TCL_YEAR="`date +%Y`"
+fi
+
+if test "$FRAMEWORK_BUILD" = "1" ; then
+    AC_DEFINE(TCL_FRAMEWORK, 1, [Is Tcl built as a framework?])
+    # Construct a fake local framework structure to make linking with
+    # '-framework Tcl' and running of tcltest work
+    AC_CONFIG_COMMANDS([Tcl.framework], [n=Tcl &&
+        f=$n.framework && v=Versions/$VERSION &&
+        rm -rf $f && mkdir -p $f/$v/Resources &&
+        ln -s $v/$n $v/Resources $f && ln -s ../../../$n $f/$v &&
+        ln -s ../../../../$n-Info.plist $f/$v/Resources/Info.plist &&
+        unset n f v
+    ], VERSION=${TCL_VERSION})
+    LD_LIBRARY_PATH_VAR="DYLD_FRAMEWORK_PATH"
+    # default install directory for bundled packages
+    if test "${libdir}" = '${exec_prefix}/lib' -o "`basename ${libdir}`" = 'Frameworks'; then
+        PACKAGE_DIR="/Library/Tcl"
+    else
+        PACKAGE_DIR="$libdir"
+    fi
+    if test "${libdir}" = '${exec_prefix}/lib'; then
+        # override libdir default
+        libdir="/Library/Frameworks"
+    fi
+    TCL_LIB_FILE="Tcl"
+    TCL_LIB_FLAG="-framework Tcl"
+    TCL_BUILD_LIB_SPEC="-F`pwd | sed -e 's/ /\\\\ /g'` -framework Tcl"
+    TCL_LIB_SPEC="-F${libdir} -framework Tcl"
+    libdir="${libdir}/Tcl.framework/Versions/\${VERSION}"
+    TCL_LIBRARY="${libdir}/Resources/Scripts"
+    includedir="${libdir}/Headers"
+    PRIVATE_INCLUDE_DIR="${libdir}/PrivateHeaders"
+    HTML_DIR="${libdir}/Resources/Documentation/Reference/Tcl"
+    EXTRA_INSTALL="install-private-headers html-tcl"
+    EXTRA_BUILD_HTML='@ln -fs contents.htm "$(HTML_INSTALL_DIR)"/TclTOC.html'
+    EXTRA_INSTALL_BINARIES='@echo "Installing Info.plist to $(LIB_INSTALL_DIR)/Resources/" && $(INSTALL_DATA_DIR) "$(LIB_INSTALL_DIR)/Resources" && $(INSTALL_DATA) Tcl-Info.plist "$(LIB_INSTALL_DIR)/Resources/Info.plist"'
+    EXTRA_INSTALL_BINARIES="$EXTRA_INSTALL_BINARIES"' && echo "Installing license.terms to $(LIB_INSTALL_DIR)/Resources/" && $(INSTALL_DATA) "$(TOP_DIR)/license.terms" "$(LIB_INSTALL_DIR)/Resources"'
+    EXTRA_INSTALL_BINARIES="$EXTRA_INSTALL_BINARIES"' && echo "Finalizing Tcl.framework" && rm -f "$(LIB_INSTALL_DIR)/../Current" && ln -s "$(VERSION)" "$(LIB_INSTALL_DIR)/../Current" && for f in "$(LIB_FILE)" tclConfig.sh Resources Headers PrivateHeaders; do rm -f "$(LIB_INSTALL_DIR)/../../$$f" && ln -s "Versions/Current/$$f" "$(LIB_INSTALL_DIR)/../.."; done && f="$(STUB_LIB_FILE)" && rm -f "$(LIB_INSTALL_DIR)/../../$$f" && ln -s "Versions/$(VERSION)/$$f" "$(LIB_INSTALL_DIR)/../.."'
+    # Don't use AC_DEFINE for the following as the framework version define
+    # needs to go into the Makefile even when using autoheader, so that we
+    # can pick up a potential make override of VERSION. Also, don't put this
+    # into CFLAGS as it should not go into tclConfig.sh
+    EXTRA_CC_SWITCHES='-DTCL_FRAMEWORK_VERSION=\"$(VERSION)\"'
+else
+    # libdir must be a fully qualified path and not ${exec_prefix}/lib
+    eval libdir="$libdir"
+    # default install directory for bundled packages
+    PACKAGE_DIR="$libdir"
+    if test "${TCL_LIB_VERSIONS_OK}" = "ok"; then
+        TCL_LIB_FLAG="-ltcl${TCL_VERSION}"
+    else
+        TCL_LIB_FLAG="-ltcl`echo ${TCL_VERSION} | tr -d .`"
+    fi
+    TCL_BUILD_LIB_SPEC="-L`pwd | sed -e 's/ /\\\\ /g'` ${TCL_LIB_FLAG}"
+    TCL_LIB_SPEC="-L${libdir} ${TCL_LIB_FLAG}"
+fi
+VERSION='${VERSION}'
+eval "CFG_TCL_SHARED_LIB_SUFFIX=${TCL_SHARED_LIB_SUFFIX}"
+eval "CFG_TCL_UNSHARED_LIB_SUFFIX=${TCL_UNSHARED_LIB_SUFFIX}"
+VERSION=${TCL_VERSION}
+
+#--------------------------------------------------------------------
+#	The statements below define the symbol TCL_PACKAGE_PATH, which
+#	gives a list of directories that may contain packages.  The list
+#	consists of one directory for machine-dependent binaries and
+#	another for platform-independent scripts.
+#--------------------------------------------------------------------
+
+if test "$FRAMEWORK_BUILD" = "1" ; then
+    test -z "$TCL_PACKAGE_PATH" && \
+	TCL_PACKAGE_PATH="~/Library/Tcl /Library/Tcl /System/Library/Tcl ~/Library/Frameworks /Library/Frameworks /System/Library/Frameworks"
+    test -z "$TCL_MODULE_PATH"  && \
+	TCL_MODULE_PATH="~/Library/Tcl /Library/Tcl /System/Library/Tcl"
+elif test "$prefix/lib" != "$libdir"; then
+    TCL_PACKAGE_PATH="${libdir} ${prefix}/lib ${TCL_PACKAGE_PATH}"
+else
+    TCL_PACKAGE_PATH="${prefix}/lib ${TCL_PACKAGE_PATH}"
+fi
+
+#--------------------------------------------------------------------
+#       The statements below define various symbols relating to Tcl
+#       stub support.
+#--------------------------------------------------------------------
+
+# Replace ${VERSION} with contents of ${TCL_VERSION}
+# double-eval to account for TCL_TRIM_DOTS.
+#
+eval "TCL_STUB_LIB_FILE=libtclstub${TCL_UNSHARED_LIB_SUFFIX}"
+eval "TCL_STUB_LIB_FILE=\"${TCL_STUB_LIB_FILE}\""
+eval "TCL_STUB_LIB_DIR=${libdir}"
+
+if test "${TCL_LIB_VERSIONS_OK}" = "ok"; then
+    TCL_STUB_LIB_FLAG="-ltclstub${TCL_VERSION}"
+else
+    TCL_STUB_LIB_FLAG="-ltclstub`echo ${TCL_VERSION} | tr -d .`"
+fi
+
+TCL_BUILD_STUB_LIB_SPEC="-L`pwd | sed -e 's/ /\\\\ /g'` ${TCL_STUB_LIB_FLAG}"
+TCL_STUB_LIB_SPEC="-L${TCL_STUB_LIB_DIR} ${TCL_STUB_LIB_FLAG}"
+TCL_BUILD_STUB_LIB_PATH="`pwd`/${TCL_STUB_LIB_FILE}"
+TCL_STUB_LIB_PATH="${TCL_STUB_LIB_DIR}/${TCL_STUB_LIB_FILE}"
+
+# Install time header dir can be set via --includedir
+eval "TCL_INCLUDE_SPEC=\"-I${includedir}\""
+
+#------------------------------------------------------------------------
+# tclConfig.sh refers to this by a different name
+#------------------------------------------------------------------------
+
+TCL_SHARED_BUILD=${SHARED_BUILD}
+
+AC_SUBST(TCL_VERSION)
+AC_SUBST(TCL_MAJOR_VERSION)
+AC_SUBST(TCL_MINOR_VERSION)
+AC_SUBST(TCL_PATCH_LEVEL)
+AC_SUBST(TCL_YEAR)
+AC_SUBST(PKG_CFG_ARGS)
+
+AC_SUBST(TCL_LIB_FILE)
+AC_SUBST(TCL_LIB_FLAG)
+AC_SUBST(TCL_LIB_SPEC)
+AC_SUBST(TCL_STUB_LIB_FILE)
+AC_SUBST(TCL_STUB_LIB_FLAG)
+AC_SUBST(TCL_STUB_LIB_SPEC)
+AC_SUBST(TCL_STUB_LIB_PATH)
+AC_SUBST(TCL_INCLUDE_SPEC)
+AC_SUBST(TCL_BUILD_STUB_LIB_SPEC)
+AC_SUBST(TCL_BUILD_STUB_LIB_PATH)
+
+AC_SUBST(TCL_SRC_DIR)
+AC_SUBST(CFG_TCL_SHARED_LIB_SUFFIX)
+AC_SUBST(CFG_TCL_UNSHARED_LIB_SUFFIX)
+
+AC_SUBST(TCL_SHARED_BUILD)
+AC_SUBST(LD_LIBRARY_PATH_VAR)
+
+AC_SUBST(TCL_BUILD_LIB_SPEC)
+
+AC_SUBST(TCL_LIB_VERSIONS_OK)
+AC_SUBST(TCL_SHARED_LIB_SUFFIX)
+AC_SUBST(TCL_UNSHARED_LIB_SUFFIX)
+
+AC_SUBST(TCL_HAS_LONGLONG)
+
+AC_SUBST(INSTALL_TZDATA)
+
+AC_SUBST(DTRACE_SRC)
+AC_SUBST(DTRACE_HDR)
+AC_SUBST(DTRACE_OBJ)
+AC_SUBST(MAKEFILE_SHELL)
+
+AC_SUBST(BUILD_DLTEST)
+AC_SUBST(TCL_PACKAGE_PATH)
+AC_SUBST(TCL_MODULE_PATH)
+
+AC_SUBST(TCL_LIBRARY)
+AC_SUBST(PRIVATE_INCLUDE_DIR)
+AC_SUBST(HTML_DIR)
+AC_SUBST(PACKAGE_DIR)
+
+AC_SUBST(EXTRA_CC_SWITCHES)
+AC_SUBST(EXTRA_APP_CC_SWITCHES)
+AC_SUBST(EXTRA_INSTALL)
+AC_SUBST(EXTRA_INSTALL_BINARIES)
+AC_SUBST(EXTRA_BUILD_HTML)
+AC_SUBST(EXTRA_TCLSH_LIBS)
+
+AC_SUBST(DLTEST_LD)
+AC_SUBST(DLTEST_SUFFIX)
+
+dnl	Disable the automake-friendly normalization of LIBOBJS
+dnl	performed by autoconf 2.53 and later.  It's not correct for us.
+define([_AC_LIBOBJS_NORMALIZE],[])
+AC_CONFIG_FILES([
+    Makefile:../unix/Makefile.in
+    dltest/Makefile:../unix/dltest/Makefile.in
+    tclConfig.sh:../unix/tclConfig.sh.in
+    tcl.pc:../unix/tcl.pc.in
+])
+AC_OUTPUT
+
+dnl Local Variables:
+dnl mode: autoconf
+dnl End:
diff --git a/tcl8.6/unix/dltest/Makefile.in b/tcl8.6/unix/dltest/Makefile.in
new file mode 100644
index 0000000..25b9376
--- /dev/null
+++ b/tcl8.6/unix/dltest/Makefile.in
@@ -0,0 +1,110 @@
+# This Makefile is used to create several test cases for Tcl's load
+# command.  It also illustrates how to take advantage of configuration
+# exported by Tcl to set up Makefiles for shared libraries.
+
+CC = @CC@
+LIBS =			@TCL_BUILD_STUB_LIB_SPEC@ @TCL_LIBS@
+AC_FLAGS =		@DEFS@
+SHLIB_LD =		@SHLIB_LD@
+SHLIB_CFLAGS =		@SHLIB_CFLAGS@
+SHLIB_LD_LIBS =		@SHLIB_LD_LIBS@
+SHLIB_SUFFIX =		@SHLIB_SUFFIX@
+DLTEST_LD =		@DLTEST_LD@
+DLTEST_SUFFIX =		@DLTEST_SUFFIX@
+SRC_DIR =		@TCL_SRC_DIR@/unix/dltest
+BUILD_DIR =		@builddir@
+TCL_VERSION=		@TCL_VERSION@
+
+CFLAGS_DEBUG		= @CFLAGS_DEBUG@
+CFLAGS_OPTIMIZE		= @CFLAGS_OPTIMIZE@
+CFLAGS			= @CFLAGS_DEFAULT@ @CFLAGS@
+LDFLAGS_DEBUG		= @LDFLAGS_DEBUG@
+LDFLAGS_OPTIMIZE	= @LDFLAGS_OPTIMIZE@
+LDFLAGS			= @LDFLAGS_DEFAULT@ @LDFLAGS@
+
+CC_SWITCHES = $(CFLAGS) -I${SRC_DIR}/../../generic -DTCL_MEM_DEBUG \
+	${SHLIB_CFLAGS} -DUSE_TCL_STUBS ${AC_FLAGS}
+
+all: pkga${SHLIB_SUFFIX} pkgb${SHLIB_SUFFIX} pkgc${SHLIB_SUFFIX} pkgd${SHLIB_SUFFIX} pkge${SHLIB_SUFFIX} pkgua${SHLIB_SUFFIX} pkgooa${SHLIB_SUFFIX}
+	@if test -n "$(DLTEST_SUFFIX)"; then $(MAKE) dltest_suffix; fi
+	@touch ../dltest.marker
+
+dltest_suffix: pkga${DLTEST_SUFFIX} pkgb${DLTEST_SUFFIX} pkgc${DLTEST_SUFFIX} pkgd${DLTEST_SUFFIX} pkge${DLTEST_SUFFIX} pkgua${DLTEST_SUFFIX} pkgooa${DLTEST_SUFFIX}
+	@touch ../dltest.marker
+
+pkga.o: $(SRC_DIR)/pkga.c
+	$(CC) -c $(CC_SWITCHES) $(SRC_DIR)/pkga.c
+
+pkgb.o: $(SRC_DIR)/pkgb.c
+	$(CC) -c $(CC_SWITCHES) $(SRC_DIR)/pkgb.c
+
+pkgc.o: $(SRC_DIR)/pkgc.c
+	$(CC) -c $(CC_SWITCHES) $(SRC_DIR)/pkgc.c
+
+pkgd.o: $(SRC_DIR)/pkgd.c
+	$(CC) -c $(CC_SWITCHES) $(SRC_DIR)/pkgd.c
+
+pkge.o: $(SRC_DIR)/pkge.c
+	$(CC) -c $(CC_SWITCHES) $(SRC_DIR)/pkge.c
+
+pkgua.o: $(SRC_DIR)/pkgua.c
+	$(CC) -c $(CC_SWITCHES) $(SRC_DIR)/pkgua.c
+
+pkgooa.o: $(SRC_DIR)/pkgooa.c
+	$(CC) -c $(CC_SWITCHES) $(SRC_DIR)/pkgooa.c
+
+pkga${SHLIB_SUFFIX}: pkga.o
+	${SHLIB_LD} -o pkga${SHLIB_SUFFIX} pkga.o ${SHLIB_LD_LIBS}
+
+pkgb${SHLIB_SUFFIX}: pkgb.o
+	${SHLIB_LD} -o pkgb${SHLIB_SUFFIX} pkgb.o ${SHLIB_LD_LIBS}
+
+pkgc${SHLIB_SUFFIX}: pkgc.o
+	${SHLIB_LD} -o pkgc${SHLIB_SUFFIX} pkgc.o ${SHLIB_LD_LIBS}
+
+pkgd${SHLIB_SUFFIX}: pkgd.o
+	${SHLIB_LD} -o pkgd${SHLIB_SUFFIX} pkgd.o ${SHLIB_LD_LIBS}
+
+pkge${SHLIB_SUFFIX}: pkge.o
+	${SHLIB_LD} -o pkge${SHLIB_SUFFIX} pkge.o ${SHLIB_LD_LIBS}
+
+pkgua${SHLIB_SUFFIX}: pkgua.o
+	${SHLIB_LD} -o pkgua${SHLIB_SUFFIX} pkgua.o ${SHLIB_LD_LIBS}
+
+pkgooa${SHLIB_SUFFIX}: pkgooa.o
+	${SHLIB_LD} -o pkgooa${SHLIB_SUFFIX} pkgooa.o ${SHLIB_LD_LIBS}
+
+pkga${DLTEST_SUFFIX}: pkga.o
+	${DLTEST_LD} -o pkga${DLTEST_SUFFIX} pkga.o ${SHLIB_LD_LIBS}
+
+pkgb${DLTEST_SUFFIX}: pkgb.o
+	${DLTEST_LD} -o pkgb${DLTEST_SUFFIX} pkgb.o ${SHLIB_LD_LIBS}
+
+pkgc${DLTEST_SUFFIX}: pkgc.o
+	${DLTEST_LD} -o pkgc${DLTEST_SUFFIX} pkgc.o ${SHLIB_LD_LIBS}
+
+pkgd${DLTEST_SUFFIX}: pkgd.o
+	${DLTEST_LD} -o pkgd${DLTEST_SUFFIX} pkgd.o ${SHLIB_LD_LIBS}
+
+pkge${DLTEST_SUFFIX}: pkge.o
+	${DLTEST_LD} -o pkge${DLTEST_SUFFIX} pkge.o ${SHLIB_LD_LIBS}
+
+pkgua${DLTEST_SUFFIX}: pkgua.o
+	${DLTEST_LD} -o pkgua${DLTEST_SUFFIX} pkgua.o ${SHLIB_LD_LIBS}
+
+pkgooa${DLTEST_SUFFIX}: pkgooa.o
+	${DLTEST_LD} -o pkgooa${DLTEST_SUFFIX} pkgooa.o ${SHLIB_LD_LIBS}
+
+clean:
+	rm -f *.o lib.exp ../dltest.marker
+	@if test "$(SHLIB_SUFFIX)" != ""; then \
+	    echo "rm -f *${SHLIB_SUFFIX}" ; \
+	    rm -f *${SHLIB_SUFFIX} ; \
+	fi
+	@if test "$(DLTEST_SUFFIX)" != ""; then \
+	    echo "rm -f *${DLTEST_SUFFIX}" ; \
+	    rm -f *${DLTEST_SUFFIX} ; \
+	fi
+
+distclean: clean
+	rm -f Makefile
diff --git a/tcl8.6/unix/dltest/README b/tcl8.6/unix/dltest/README
new file mode 100644
index 0000000..3210f13
--- /dev/null
+++ b/tcl8.6/unix/dltest/README
@@ -0,0 +1,4 @@
+This directory contains several files for testing Tcl's dynamic
+loading/unloading capabilities.  If shared libraries are supported
+then the build system in the parent directory will create
+the shared libs and load them into the tcltest executable.
diff --git a/tcl8.6/unix/dltest/pkga.c b/tcl8.6/unix/dltest/pkga.c
new file mode 100644
index 0000000..c4d3f32
--- /dev/null
+++ b/tcl8.6/unix/dltest/pkga.c
@@ -0,0 +1,145 @@
+/*
+ * pkga.c --
+ *
+ *	This file contains a simple Tcl package "pkga" that is intended for
+ *	testing the Tcl dynamic loading facilities.
+ *
+ * Copyright (c) 1995 Sun Microsystems, Inc.
+ *
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ */
+
+#undef STATIC_BUILD
+#include "tcl.h"
+
+/*
+ * TCL_STORAGE_CLASS is set unconditionally to DLLEXPORT because the
+ * Pkga_Init declaration is in the source file itself, which is only
+ * accessed when we are building a library.
+ */
+#undef TCL_STORAGE_CLASS
+#define TCL_STORAGE_CLASS DLLEXPORT
+
+/*
+ * Prototypes for procedures defined later in this file:
+ */
+
+static int    Pkga_EqObjCmd(ClientData clientData,
+		Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]);
+static int    Pkga_QuoteObjCmd(ClientData clientData,
+		Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]);
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Pkga_EqObjCmd --
+ *
+ *	This procedure is invoked to process the "pkga_eq" Tcl command. It
+ *	expects two arguments and returns 1 if they are the same, 0 if they
+ *	are different.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	See the user documentation.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+Pkga_EqObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
+{
+    int result;
+    const char *str1, *str2;
+    int len1, len2;
+
+    if (objc != 3) {
+	Tcl_WrongNumArgs(interp, 1, objv,  "string1 string2");
+	return TCL_ERROR;
+    }
+
+    str1 = Tcl_GetStringFromObj(objv[1], &len1);
+    str2 = Tcl_GetStringFromObj(objv[2], &len2);
+    if (len1 == len2) {
+	result = (Tcl_UtfNcmp(str1, str2, len1) == 0);
+    } else {
+	result = 0;
+    }
+    Tcl_SetObjResult(interp, Tcl_NewIntObj(result));
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Pkga_QuoteObjCmd --
+ *
+ *	This procedure is invoked to process the "pkga_quote" Tcl command. It
+ *	expects one argument, which it returns as result.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	See the user documentation.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+Pkga_QuoteObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument strings. */
+{
+    if (objc != 2) {
+	Tcl_WrongNumArgs(interp, 1, objv, "value");
+	return TCL_ERROR;
+    }
+    Tcl_SetObjResult(interp, objv[1]);
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Pkga_Init --
+ *
+ *	This is a package initialization procedure, which is called by Tcl
+ *	when this package is to be added to an interpreter.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+EXTERN int
+Pkga_Init(
+    Tcl_Interp *interp)		/* Interpreter in which the package is to be
+				 * made available. */
+{
+    int code;
+
+    if (Tcl_InitStubs(interp, TCL_VERSION, 0) == NULL) {
+	return TCL_ERROR;
+    }
+    code = Tcl_PkgProvide(interp, "Pkga", "1.0");
+    if (code != TCL_OK) {
+	return code;
+    }
+    Tcl_CreateObjCommand(interp, "pkga_eq", Pkga_EqObjCmd, NULL, NULL);
+    Tcl_CreateObjCommand(interp, "pkga_quote", Pkga_QuoteObjCmd, NULL,
+	    NULL);
+    return TCL_OK;
+}
diff --git a/tcl8.6/unix/dltest/pkgb.c b/tcl8.6/unix/dltest/pkgb.c
new file mode 100644
index 0000000..f102496
--- /dev/null
+++ b/tcl8.6/unix/dltest/pkgb.c
@@ -0,0 +1,190 @@
+/*
+ * pkgb.c --
+ *
+ *	This file contains a simple Tcl package "pkgb" that is intended for
+ *	testing the Tcl dynamic loading facilities. It can be used in both
+ *	safe and unsafe interpreters.
+ *
+ * Copyright (c) 1995 Sun Microsystems, Inc.
+ *
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ */
+
+#undef STATIC_BUILD
+#include "tcl.h"
+
+/*
+ * Prototypes for procedures defined later in this file:
+ */
+
+static int    Pkgb_SubObjCmd(ClientData clientData,
+		Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]);
+static int    Pkgb_UnsafeObjCmd(ClientData clientData,
+		Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]);
+static int    Pkgb_DemoObjCmd(ClientData clientData,
+		Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]);
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Pkgb_SubObjCmd --
+ *
+ *	This procedure is invoked to process the "pkgb_sub" Tcl command. It
+ *	expects two arguments and returns their difference.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	See the user documentation.
+ *
+ *----------------------------------------------------------------------
+ */
+
+#ifndef Tcl_GetErrorLine
+#   define Tcl_GetErrorLine(interp) ((interp)->errorLine)
+#endif
+
+static int
+Pkgb_SubObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
+{
+    int first, second;
+
+    if (objc != 3) {
+	Tcl_WrongNumArgs(interp, 1, objv, "num num");
+	return TCL_ERROR;
+    }
+    if ((Tcl_GetIntFromObj(interp, objv[1], &first) != TCL_OK)
+	    || (Tcl_GetIntFromObj(interp, objv[2], &second) != TCL_OK)) {
+	char buf[TCL_INTEGER_SPACE];
+	sprintf(buf, "%d", Tcl_GetErrorLine(interp));
+	Tcl_AppendResult(interp, " in line: ", buf, NULL);
+	return TCL_ERROR;
+    }
+    Tcl_SetObjResult(interp, Tcl_NewIntObj(first - second));
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Pkgb_UnsafeObjCmd --
+ *
+ *	This procedure is invoked to process the "pkgb_unsafe" Tcl command. It
+ *	just returns a constant string.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	See the user documentation.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+Pkgb_UnsafeObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
+{
+    return Tcl_EvalEx(interp, "list unsafe command invoked", -1, TCL_EVAL_GLOBAL);
+}
+
+static int
+Pkgb_DemoObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
+{
+#if (TCL_MAJOR_VERSION > 8) || (TCL_MINOR_VERSION > 4)
+    Tcl_Obj *first;
+
+    if (Tcl_ListObjIndex(NULL, Tcl_GetEncodingSearchPath(), 0, &first)
+	    == TCL_OK) {
+	Tcl_SetObjResult(interp, first);
+    }
+#else
+    Tcl_SetObjResult(interp, Tcl_NewStringObj(Tcl_GetDefaultEncodingDir(), -1));
+#endif
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Pkgb_Init --
+ *
+ *	This is a package initialization procedure, which is called by Tcl
+ *	when this package is to be added to an interpreter.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+DLLEXPORT int
+Pkgb_Init(
+    Tcl_Interp *interp)		/* Interpreter in which the package is to be
+				 * made available. */
+{
+    int code;
+
+    if (Tcl_InitStubs(interp, "8.5-", 0) == NULL) {
+	return TCL_ERROR;
+    }
+    code = Tcl_PkgProvide(interp, "Pkgb", "2.3");
+    if (code != TCL_OK) {
+	return code;
+    }
+    Tcl_CreateObjCommand(interp, "pkgb_sub", Pkgb_SubObjCmd, NULL, NULL);
+    Tcl_CreateObjCommand(interp, "pkgb_unsafe", Pkgb_UnsafeObjCmd, NULL, NULL);
+    Tcl_CreateObjCommand(interp, "pkgb_demo", Pkgb_DemoObjCmd, NULL, NULL);
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Pkgb_SafeInit --
+ *
+ *	This is a package initialization procedure, which is called by Tcl
+ *	when this package is to be added to a safe interpreter.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+DLLEXPORT int
+Pkgb_SafeInit(
+    Tcl_Interp *interp)		/* Interpreter in which the package is to be
+				 * made available. */
+{
+    int code;
+
+    if (Tcl_InitStubs(interp, "8.5-", 0) == NULL) {
+	return TCL_ERROR;
+    }
+    code = Tcl_PkgProvide(interp, "Pkgb", "2.3");
+    if (code != TCL_OK) {
+	return code;
+    }
+    Tcl_CreateObjCommand(interp, "pkgb_sub", Pkgb_SubObjCmd, NULL, NULL);
+    return TCL_OK;
+}
diff --git a/tcl8.6/unix/dltest/pkgc.c b/tcl8.6/unix/dltest/pkgc.c
new file mode 100644
index 0000000..557f21b
--- /dev/null
+++ b/tcl8.6/unix/dltest/pkgc.c
@@ -0,0 +1,170 @@
+/*
+ * pkgc.c --
+ *
+ *	This file contains a simple Tcl package "pkgc" that is intended for
+ *	testing the Tcl dynamic loading facilities. It can be used in both
+ *	safe and unsafe interpreters.
+ *
+ * Copyright (c) 1995 Sun Microsystems, Inc.
+ *
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ */
+
+#undef STATIC_BUILD
+#include "tcl.h"
+
+/*
+ * TCL_STORAGE_CLASS is set unconditionally to DLLEXPORT because the
+ * Pkgc_Init declaration is in the source file itself, which is only
+ * accessed when we are building a library.
+ */
+#undef TCL_STORAGE_CLASS
+#define TCL_STORAGE_CLASS DLLEXPORT
+
+/*
+ * Prototypes for procedures defined later in this file:
+ */
+
+static int    Pkgc_SubObjCmd(ClientData clientData,
+		Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]);
+static int    Pkgc_UnsafeObjCmd(ClientData clientData,
+		Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]);
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Pkgc_SubObjCmd --
+ *
+ *	This procedure is invoked to process the "pkgc_sub" Tcl command. It
+ *	expects two arguments and returns their difference.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	See the user documentation.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+Pkgc_SubObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
+{
+    int first, second;
+
+    if (objc != 3) {
+	Tcl_WrongNumArgs(interp, 1, objv, "num num");
+	return TCL_ERROR;
+    }
+    if ((Tcl_GetIntFromObj(interp, objv[1], &first) != TCL_OK)
+	    || (Tcl_GetIntFromObj(interp, objv[2], &second) != TCL_OK)) {
+	return TCL_ERROR;
+    }
+    Tcl_SetObjResult(interp, Tcl_NewIntObj(first - second));
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Pkgc_UnsafeCmd --
+ *
+ *	This procedure is invoked to process the "pkgc_unsafe" Tcl command. It
+ *	just returns a constant string.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	See the user documentation.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+Pkgc_UnsafeObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
+{
+    Tcl_SetObjResult(interp, Tcl_NewStringObj("unsafe command invoked", -1));
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Pkgc_Init --
+ *
+ *	This is a package initialization procedure, which is called by Tcl
+ *	when this package is to be added to an interpreter.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+EXTERN int
+Pkgc_Init(
+    Tcl_Interp *interp)		/* Interpreter in which the package is to be
+				 * made available. */
+{
+    int code;
+
+    if (Tcl_InitStubs(interp, TCL_VERSION, 0) == NULL) {
+	return TCL_ERROR;
+    }
+    code = Tcl_PkgProvide(interp, "Pkgc", "1.7.2");
+    if (code != TCL_OK) {
+	return code;
+    }
+    Tcl_CreateObjCommand(interp, "pkgc_sub", Pkgc_SubObjCmd, NULL, NULL);
+    Tcl_CreateObjCommand(interp, "pkgc_unsafe", Pkgc_UnsafeObjCmd, NULL,
+	    NULL);
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Pkgc_SafeInit --
+ *
+ *	This is a package initialization procedure, which is called by Tcl
+ *	when this package is to be added to a safe interpreter.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+EXTERN int
+Pkgc_SafeInit(
+    Tcl_Interp *interp)		/* Interpreter in which the package is to be
+				 * made available. */
+{
+    int code;
+
+    if (Tcl_InitStubs(interp, TCL_VERSION, 0) == NULL) {
+	return TCL_ERROR;
+    }
+    code = Tcl_PkgProvide(interp, "Pkgc", "1.7.2");
+    if (code != TCL_OK) {
+	return code;
+    }
+    Tcl_CreateObjCommand(interp, "pkgc_sub", Pkgc_SubObjCmd, NULL, NULL);
+    return TCL_OK;
+}
diff --git a/tcl8.6/unix/dltest/pkgd.c b/tcl8.6/unix/dltest/pkgd.c
new file mode 100644
index 0000000..6e114e9
--- /dev/null
+++ b/tcl8.6/unix/dltest/pkgd.c
@@ -0,0 +1,170 @@
+/*
+ * pkgd.c --
+ *
+ *	This file contains a simple Tcl package "pkgd" that is intended for
+ *	testing the Tcl dynamic loading facilities. It can be used in both
+ *	safe and unsafe interpreters.
+ *
+ * Copyright (c) 1995 Sun Microsystems, Inc.
+ *
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ */
+
+#undef STATIC_BUILD
+#include "tcl.h"
+
+/*
+ * TCL_STORAGE_CLASS is set unconditionally to DLLEXPORT because the
+ * Pkgd_Init declaration is in the source file itself, which is only
+ * accessed when we are building a library.
+ */
+#undef TCL_STORAGE_CLASS
+#define TCL_STORAGE_CLASS DLLEXPORT
+
+/*
+ * Prototypes for procedures defined later in this file:
+ */
+
+static int    Pkgd_SubObjCmd(ClientData clientData,
+		Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]);
+static int    Pkgd_UnsafeObjCmd(ClientData clientData,
+		Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]);
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Pkgd_SubObjCmd --
+ *
+ *	This procedure is invoked to process the "pkgd_sub" Tcl command. It
+ *	expects two arguments and returns their difference.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	See the user documentation.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+Pkgd_SubObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
+{
+    int first, second;
+
+    if (objc != 3) {
+	Tcl_WrongNumArgs(interp, 1, objv, "num num");
+	return TCL_ERROR;
+    }
+    if ((Tcl_GetIntFromObj(interp, objv[1], &first) != TCL_OK)
+	    || (Tcl_GetIntFromObj(interp, objv[2], &second) != TCL_OK)) {
+	return TCL_ERROR;
+    }
+    Tcl_SetObjResult(interp, Tcl_NewIntObj(first - second));
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Pkgd_UnsafeCmd --
+ *
+ *	This procedure is invoked to process the "pkgd_unsafe" Tcl command. It
+ *	just returns a constant string.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	See the user documentation.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+Pkgd_UnsafeObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
+{
+    Tcl_SetObjResult(interp, Tcl_NewStringObj("unsafe command invoked", -1));
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Pkgd_Init --
+ *
+ *	This is a package initialization procedure, which is called by Tcl
+ *	when this package is to be added to an interpreter.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+EXTERN int
+Pkgd_Init(
+    Tcl_Interp *interp)		/* Interpreter in which the package is to be
+				 * made available. */
+{
+    int code;
+
+    if (Tcl_InitStubs(interp, TCL_VERSION, 0) == NULL) {
+	return TCL_ERROR;
+    }
+    code = Tcl_PkgProvide(interp, "Pkgd", "7.3");
+    if (code != TCL_OK) {
+	return code;
+    }
+    Tcl_CreateObjCommand(interp, "pkgd_sub", Pkgd_SubObjCmd, NULL, NULL);
+    Tcl_CreateObjCommand(interp, "pkgd_unsafe", Pkgd_UnsafeObjCmd, NULL,
+	    NULL);
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Pkgd_SafeInit --
+ *
+ *	This is a package initialization procedure, which is called by Tcl
+ *	when this package is to be added to a safe interpreter.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+EXTERN int
+Pkgd_SafeInit(
+    Tcl_Interp *interp)		/* Interpreter in which the package is to be
+				 * made available. */
+{
+    int code;
+
+    if (Tcl_InitStubs(interp, TCL_VERSION, 0) == NULL) {
+	return TCL_ERROR;
+    }
+    code = Tcl_PkgProvide(interp, "Pkgd", "7.3");
+    if (code != TCL_OK) {
+	return code;
+    }
+    Tcl_CreateObjCommand(interp, "pkgd_sub", Pkgd_SubObjCmd, NULL, NULL);
+    return TCL_OK;
+}
diff --git a/tcl8.6/unix/dltest/pkge.c b/tcl8.6/unix/dltest/pkge.c
new file mode 100644
index 0000000..395cd0e
--- /dev/null
+++ b/tcl8.6/unix/dltest/pkge.c
@@ -0,0 +1,54 @@
+/*
+ * pkge.c --
+ *
+ *	This file contains a simple Tcl package "pkge" that is intended for
+ *	testing the Tcl dynamic loading facilities. Its Init procedure returns
+ *	an error in order to test how this is handled.
+ *
+ * Copyright (c) 1995 Sun Microsystems, Inc.
+ *
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ */
+
+#undef STATIC_BUILD
+#include "tcl.h"
+
+/*
+ * TCL_STORAGE_CLASS is set unconditionally to DLLEXPORT because the
+ * Pkge_Init declaration is in the source file itself, which is only
+ * accessed when we are building a library.
+ */
+#undef TCL_STORAGE_CLASS
+#define TCL_STORAGE_CLASS DLLEXPORT
+
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Pkge_Init --
+ *
+ *	This is a package initialization procedure, which is called by Tcl
+ *	when this package is to be added to an interpreter.
+ *
+ * Results:
+ *	Returns TCL_ERROR and leaves an error message in interp->result.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+EXTERN int
+Pkge_Init(
+    Tcl_Interp *interp)		/* Interpreter in which the package is to be
+				 * made available. */
+{
+    static const char script[] = "if 44 {open non_existent}";
+
+    if (Tcl_InitStubs(interp, TCL_VERSION, 0) == NULL) {
+	return TCL_ERROR;
+    }
+    return Tcl_EvalEx(interp, script, -1, 0);
+}
diff --git a/tcl8.6/unix/dltest/pkgooa.c b/tcl8.6/unix/dltest/pkgooa.c
new file mode 100644
index 0000000..78af376
--- /dev/null
+++ b/tcl8.6/unix/dltest/pkgooa.c
@@ -0,0 +1,141 @@
+/*
+ * pkgooa.c --
+ *
+ *	This file contains a simple Tcl package "pkgooa" that is intended for
+ *	testing the Tcl dynamic loading facilities.
+ *
+ * Copyright (c) 1995 Sun Microsystems, Inc.
+ *
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ */
+
+#undef STATIC_BUILD
+#include "tclOO.h"
+#include <string.h>
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Pkgooa_StubsOKObjCmd --
+ *
+ *	This procedure is invoked to process the "pkgooa_stubsok" Tcl command.
+ *	It gives 1 if stubs are used correctly, 0 if stubs are not OK.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	See the user documentation.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+Pkgooa_StubsOKObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
+{
+    if (objc != 1) {
+	Tcl_WrongNumArgs(interp, 1, objv, "");
+	return TCL_ERROR;
+    }
+    Tcl_SetObjResult(interp, Tcl_NewIntObj(
+	    Tcl_CopyObjectInstance == tclOOStubsPtr->tcl_CopyObjectInstance));
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Pkgooa_Init --
+ *
+ *	This is a package initialization procedure, which is called by Tcl
+ *	when this package is to be added to an interpreter.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+extern void *tclOOIntStubsPtr;
+
+static TclOOStubs stubsCopy = {
+    TCL_STUB_MAGIC,
+    NULL,
+    /* It doesn't really matter what implementation of
+     * Tcl_CopyObjectInstance is put in the "pseudo"
+     * stub table, since the test-case never actually
+     * calls this function. All that matters is that it's
+     * a function with a different memory address than
+     * the real Tcl_CopyObjectInstance function in Tcl. */
+    (Tcl_Object (*) (Tcl_Interp *, Tcl_Object, const char *,
+	    const char *t)) Pkgooa_StubsOKObjCmd
+    /* More entries could be here, but those are not used
+     * for this test-case. So, being NULL is OK. */
+};
+
+extern DLLEXPORT int
+Pkgooa_Init(
+    Tcl_Interp *interp)		/* Interpreter in which the package is to be
+				 * made available. */
+{
+    int code;
+
+    /* Any TclOO extension which uses stubs, calls
+     * both Tcl_InitStubs and Tcl_OOInitStubs() and
+     * does not use any Tcl 8.6 features should be
+     * loadable in Tcl 8.5 as well, provided the
+     * TclOO extension (for Tcl 8.5) is installed.
+     * This worked in Tcl 8.6.0, and is expected
+     * to keep working in all future Tcl 8.x releases.
+     */
+    if (Tcl_InitStubs(interp, "8.5", 0) == NULL) {
+	return TCL_ERROR;
+    }
+    if (tclStubsPtr == NULL) {
+	Tcl_AppendResult(interp, "Tcl stubs are not inialized, "
+		"did you compile using -DUSE_TCL_STUBS? ");
+	return TCL_ERROR;
+    }
+    if (Tcl_OOInitStubs(interp) == NULL) {
+	return TCL_ERROR;
+    }
+    if (tclOOStubsPtr == NULL) {
+	Tcl_AppendResult(interp, "TclOO stubs are not inialized");
+	return TCL_ERROR;
+    }
+    if (tclOOIntStubsPtr == NULL) {
+	Tcl_AppendResult(interp, "TclOO internal stubs are not inialized");
+	return TCL_ERROR;
+    }
+
+    /* Test case for Bug [f51efe99a7].
+     *
+     * Let tclOOStubsPtr point to an alternate stub table
+     * (with only a single function, that's enough for
+     * this test). This way, the function "pkgooa_stubsok"
+     * can check whether the TclOO function calls really
+     * use the stub table, or only pretend to.
+     *
+     * On platforms without backlinking (Windows, Cygwin,
+     * AIX), this code doesn't even compile without using
+     * stubs, but on UNIX ELF systems, the problem is
+     * less visible.
+     */
+
+    tclOOStubsPtr = &stubsCopy;
+
+    code = Tcl_PkgProvide(interp, "Pkgooa", "1.0");
+    if (code != TCL_OK) {
+	return code;
+    }
+    Tcl_CreateObjCommand(interp, "pkgooa_stubsok", Pkgooa_StubsOKObjCmd, NULL, NULL);
+    return TCL_OK;
+}
diff --git a/tcl8.6/unix/dltest/pkgua.c b/tcl8.6/unix/dltest/pkgua.c
new file mode 100644
index 0000000..417bedb
--- /dev/null
+++ b/tcl8.6/unix/dltest/pkgua.c
@@ -0,0 +1,341 @@
+/*
+ * pkgua.c --
+ *
+ *	This file contains a simple Tcl package "pkgua" that is intended for
+ *	testing the Tcl dynamic unloading facilities.
+ *
+ * Copyright (c) 1995 Sun Microsystems, Inc.
+ * Copyright (c) 2004 Georgios Petasis
+ *
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ */
+
+#undef STATIC_BUILD
+#include "tcl.h"
+
+/*
+ * TCL_STORAGE_CLASS is set unconditionally to DLLEXPORT because the
+ * Pkgua_Init declaration is in the source file itself, which is only
+ * accessed when we are building a library.
+ */
+#undef TCL_STORAGE_CLASS
+#define TCL_STORAGE_CLASS DLLEXPORT
+
+/*
+ * Prototypes for procedures defined later in this file:
+ */
+
+static int    PkguaEqObjCmd(ClientData clientData,
+		Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]);
+static int    PkguaQuoteObjCmd(ClientData clientData,
+		Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]);
+
+/*
+ * In the following hash table we are going to store a struct that holds all
+ * the command tokens created by Tcl_CreateObjCommand in an interpreter,
+ * indexed by the interpreter. In this way, we can find which command tokens
+ * we have registered in a specific interpreter, in order to unload them. We
+ * need to keep the various command tokens we have registered, as they are the
+ * only safe way to unregister our registered commands, even if they have been
+ * renamed.
+ *
+ * Note that this code is utterly single-threaded.
+ */
+
+static Tcl_HashTable interpTokenMap;
+static int interpTokenMapInitialised = 0;
+#define MAX_REGISTERED_COMMANDS 2
+
+
+static void
+PkguaInitTokensHashTable(void)
+{
+    if (interpTokenMapInitialised) {
+	return;
+    }
+    Tcl_InitHashTable(&interpTokenMap, TCL_ONE_WORD_KEYS);
+    interpTokenMapInitialised = 1;
+}
+
+static void
+PkguaFreeTokensHashTable(void)
+{
+    Tcl_HashSearch search;
+    Tcl_HashEntry *entryPtr;
+
+    for (entryPtr = Tcl_FirstHashEntry(&interpTokenMap, &search);
+	    entryPtr != NULL; entryPtr = Tcl_NextHashEntry(&search)) {
+	Tcl_Free((char *) Tcl_GetHashValue(entryPtr));
+    }
+    interpTokenMapInitialised = 0;
+}
+
+static Tcl_Command *
+PkguaInterpToTokens(
+    Tcl_Interp *interp)
+{
+    int newEntry;
+    Tcl_Command *cmdTokens;
+    Tcl_HashEntry *entryPtr =
+	    Tcl_CreateHashEntry(&interpTokenMap, (char *) interp, &newEntry);
+
+    if (newEntry) {
+	cmdTokens = (Tcl_Command *)
+		Tcl_Alloc(sizeof(Tcl_Command) * (MAX_REGISTERED_COMMANDS+1));
+	for (newEntry=0 ; newEntry<MAX_REGISTERED_COMMANDS+1 ; ++newEntry) {
+	    cmdTokens[newEntry] = NULL;
+	}
+	Tcl_SetHashValue(entryPtr, cmdTokens);
+    } else {
+	cmdTokens = (Tcl_Command *) Tcl_GetHashValue(entryPtr);
+    }
+    return cmdTokens;
+}
+
+static void
+PkguaDeleteTokens(
+    Tcl_Interp *interp)
+{
+    Tcl_HashEntry *entryPtr =
+	    Tcl_FindHashEntry(&interpTokenMap, (char *) interp);
+
+    if (entryPtr) {
+	Tcl_Free((char *) Tcl_GetHashValue(entryPtr));
+	Tcl_DeleteHashEntry(entryPtr);
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * PkguaEqObjCmd --
+ *
+ *	This procedure is invoked to process the "pkgua_eq" Tcl command. It
+ *	expects two arguments and returns 1 if they are the same, 0 if they
+ *	are different.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	See the user documentation.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+PkguaEqObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
+{
+    int result;
+    const char *str1, *str2;
+    int len1, len2;
+
+    if (objc != 3) {
+	Tcl_WrongNumArgs(interp, 1, objv,  "string1 string2");
+	return TCL_ERROR;
+    }
+
+    str1 = Tcl_GetStringFromObj(objv[1], &len1);
+    str2 = Tcl_GetStringFromObj(objv[2], &len2);
+    if (len1 == len2) {
+	result = (Tcl_UtfNcmp(str1, str2, len1) == 0);
+    } else {
+	result = 0;
+    }
+    Tcl_SetObjResult(interp, Tcl_NewIntObj(result));
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * PkguaQuoteObjCmd --
+ *
+ *	This procedure is invoked to process the "pkgua_quote" Tcl command. It
+ *	expects one argument, which it returns as result.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	See the user documentation.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+PkguaQuoteObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument strings. */
+{
+    if (objc != 2) {
+	Tcl_WrongNumArgs(interp, 1, objv, "value");
+	return TCL_ERROR;
+    }
+    Tcl_SetObjResult(interp, objv[1]);
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Pkgua_Init --
+ *
+ *	This is a package initialization procedure, which is called by Tcl
+ *	when this package is to be added to an interpreter.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+EXTERN int
+Pkgua_Init(
+    Tcl_Interp *interp)		/* Interpreter in which the package is to be
+				 * made available. */
+{
+    int code, cmdIndex = 0;
+    Tcl_Command *cmdTokens;
+
+    if (Tcl_InitStubs(interp, TCL_VERSION, 0) == NULL) {
+	return TCL_ERROR;
+    }
+
+    /*
+     * Initialise our Hash table, where we store the registered command tokens
+     * for each interpreter.
+     */
+
+    PkguaInitTokensHashTable();
+
+    code = Tcl_PkgProvide(interp, "Pkgua", "1.0");
+    if (code != TCL_OK) {
+	return code;
+    }
+
+    Tcl_SetVar(interp, "::pkgua_loaded", ".", TCL_APPEND_VALUE);
+
+    cmdTokens = PkguaInterpToTokens(interp);
+    cmdTokens[cmdIndex++] =
+	    Tcl_CreateObjCommand(interp, "pkgua_eq", PkguaEqObjCmd, NULL,
+		    NULL);
+    cmdTokens[cmdIndex++] =
+	    Tcl_CreateObjCommand(interp, "pkgua_quote", PkguaQuoteObjCmd,
+		    NULL, NULL);
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Pkgua_SafeInit --
+ *
+ *	This is a package initialization procedure, which is called by Tcl
+ *	when this package is to be added to a safe interpreter.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+EXTERN int
+Pkgua_SafeInit(
+    Tcl_Interp *interp)		/* Interpreter in which the package is to be
+				 * made available. */
+{
+    return Pkgua_Init(interp);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Pkgua_Unload --
+ *
+ *	This is a package unloading initialization procedure, which is called
+ *	by Tcl when this package is to be unloaded from an interpreter.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+EXTERN int
+Pkgua_Unload(
+    Tcl_Interp *interp,		/* Interpreter from which the package is to be
+				 * unloaded. */
+    int flags)			/* Flags passed by the unloading mechanism */
+{
+    int code, cmdIndex;
+    Tcl_Command *cmdTokens = PkguaInterpToTokens(interp);
+
+    for (cmdIndex=0 ; cmdIndex<MAX_REGISTERED_COMMANDS ; cmdIndex++) {
+	if (cmdTokens[cmdIndex] == NULL) {
+	    continue;
+	}
+	code = Tcl_DeleteCommandFromToken(interp, cmdTokens[cmdIndex]);
+	if (code != TCL_OK) {
+	    return code;
+	}
+    }
+
+    PkguaDeleteTokens(interp);
+
+    Tcl_SetVar(interp, "::pkgua_detached", ".", TCL_APPEND_VALUE);
+
+    if (flags == TCL_UNLOAD_DETACH_FROM_PROCESS) {
+	/*
+	 * Tcl is ready to detach this library from the running application.
+	 * We should free all the memory that is not related to any
+	 * interpreter.
+	 */
+
+	PkguaFreeTokensHashTable();
+	Tcl_SetVar(interp, "::pkgua_unloaded", ".", TCL_APPEND_VALUE);
+    }
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Pkgua_SafeUnload --
+ *
+ *	This is a package unloading initialization procedure, which is called
+ *	by Tcl when this package is to be unloaded from an interpreter.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+EXTERN int
+Pkgua_SafeUnload(
+    Tcl_Interp *interp,		/* Interpreter from which the package is to be
+				 * unloaded. */
+    int flags)			/* Flags passed by the unloading mechanism */
+{
+    return Pkgua_Unload(interp, flags);
+}
diff --git a/tcl8.6/unix/install-sh b/tcl8.6/unix/install-sh
new file mode 100755
index 0000000..7c34c3f
--- /dev/null
+++ b/tcl8.6/unix/install-sh
@@ -0,0 +1,528 @@
+#!/bin/sh
+# install - install a program, script, or datafile
+
+scriptversion=2011-04-20.01; # 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.
+  -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;;
+
+    -S) stripcmd="$stripprog $2"
+	shift;;
+
+    -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
+  do_exit='(exit $ret); exit $ret'
+  trap "ret=129; $do_exit" 1
+  trap "ret=130; $do_exit" 2
+  trap "ret=141; $do_exit" 13
+  trap "ret=143; $do_exit" 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/tcl8.6/unix/installManPage b/tcl8.6/unix/installManPage
new file mode 100755
index 0000000..1f1cbde
--- /dev/null
+++ b/tcl8.6/unix/installManPage
@@ -0,0 +1,117 @@
+#!/bin/sh
+
+########################################################################
+### Parse Options
+###
+
+Gzip=:
+SymOrLoc=""
+Gz=""
+Suffix=""
+
+while true; do
+    case $1 in
+        -s | --symlinks  ) SymOrLoc="-s "      ;;
+        -z | --compress  )     Gzip=$2;  shift ;;
+	-e | --extension )       Gz=$2;  shift ;;
+	-x | --suffix    )   Suffix=$2;  shift ;;
+	-*) cat <<EOF
+Unknown option "$1". Supported options:
+    -s         Use symbolic links for manpages with multiple names.
+    -z PROG    Use PROG to compress manual pages.
+    -e EXT     Defines the extension added by -z PROG when compressing.
+    -x SUFF    Defines an extra extension suffix to use.
+Option names may not be combined getopt-style.
+EOF
+	    exit 1 ;;
+	*)  break ;;
+    esac
+    shift
+done
+if test "$#" != 2; then
+    echo "Usage: installManPages <options> file dir"
+    exit 1
+fi
+
+########################################################################
+### Parse Required Arguments
+###
+
+ManPage=$1
+Dir=$2
+if test -f $ManPage ; then : ; else
+    echo "source manual page file must exist"
+    exit 1
+fi
+if test -d $Dir ; then : ; else
+    echo "target directory must exist"
+    exit 1
+fi
+test -z "$SymOrLoc" && SymOrLoc="$Dir/"
+
+########################################################################
+### Extract Target Names from Manual Page
+###
+
+# A sed script to parse the alternative names out of a man page.
+#
+# Backslashes are trippled in the sed script, because it is in
+# backticks which doesn't pass backslashes literally.
+#
+Names=`sed -n '
+#                               Look for a line that starts with .SH NAME
+    /^\.SH NAME/{
+#                               Read next line
+	n
+#                               Remove all commas ...
+	s/,//g
+#                               ... and backslash-escaped spaces.
+	s/\\\ //g
+#                               Delete from \- to the end of line
+	s/ \\\-.*//
+#                               Convert all non-space non-alphanum sequences
+#                               to single underscores.
+	s/[^ A-Za-z0-9][^ A-Za-z0-9]*/_/g
+#                               print the result and exit
+	p;q
+    }' $ManPage`
+
+if test -z "$Names" ; then
+    echo "warning: no target names found in $ManPage"
+fi
+
+########################################################################
+### Remaining Set Up
+###
+
+case $ManPage in
+    *.1) Section=1 ;;
+    *.3) Section=3 ;;
+    *.n) Section=n ;;
+    *)	echo "unknown section for $ManPage"
+	exit 2 ;;
+esac
+
+SrcDir=`dirname $ManPage`
+
+########################################################################
+### Process Page to Create Target Pages
+###
+
+First=""
+for Target in $Names; do
+    Target=$Target.$Section$Suffix
+    rm -f $Dir/$Target $Dir/$Target.*
+    if test -z "$First" ; then
+	First=$Target
+	sed -e "/man\.macros/r $SrcDir/man.macros" -e "/man\.macros/d" \
+	    $ManPage > $Dir/$First
+	chmod 644 $Dir/$First
+	$Gzip $Dir/$First
+    else
+	ln $SymOrLoc$First$Gz $Dir/$Target$Gz
+    fi
+done
+
+########################################################################
+exit 0
diff --git a/tcl8.6/unix/ldAix b/tcl8.6/unix/ldAix
new file mode 100755
index 0000000..f115ea8
--- /dev/null
+++ b/tcl8.6/unix/ldAix
@@ -0,0 +1,58 @@
+#!/bin/sh
+#
+# ldAix ldCmd ldArg ldArg ...
+#
+# This shell script provides a wrapper for ld under AIX in order to
+# create the .exp file required for linking.  Its arguments consist
+# of the name and arguments that would normally be provided to the
+# ld command.  This script extracts the names of the object files
+# from the argument list, creates a .exp file describing all of the
+# symbols exported by those files, and then invokes "ldCmd" to
+# perform the real link.
+
+# Extract from the arguments the names of all of the object files.
+
+args=$*
+ofiles=""
+for i do
+    x=`echo $i | grep '[^.].o$'`
+    if test "$x" != ""; then
+	ofiles="$ofiles $i"
+    fi
+done
+
+# Extract the name of the object file that we're linking.
+outputFile=`echo $args | sed -e 's/.*-o \([^ ]*\).*/\1/'`
+
+# Create the export file from all of the object files, using nm followed
+# by sed editing.  Here are some tricky aspects of this:
+#
+# - Use the -X32_64 switch to nm to handle 32 or 64bit compiles.
+# - Eliminate lines that end in ":": these are the names of object files
+# - Eliminate entries with the "U" key letter;  these are undefined symbols
+# - If a line starts with ".", delete the leading ".", since this will just
+#   cause confusion later
+# - Eliminate everything after the first field in a line, so that we're
+#   left with just the symbol name
+
+nmopts="-g -C -h -X32_64"
+rm -f lib.exp
+echo "#! $outputFile" >lib.exp
+/usr/ccs/bin/nm $nmopts $ofiles | sed -e '/:$/d' -e '/ U /d' -e 's/^\.//' -e 's/[ 	|].*//' | sort | uniq >>lib.exp
+
+# If we're linking a .a file, then link all the objects together into a
+# single file "shr.o" and then put that into the archive.  Otherwise link
+# the object files directly into the .a file.
+
+noDotA=`echo $outputFile | sed -e '/\.a$/d'`
+echo "noDotA=\"$noDotA\""
+if test "$noDotA" = "" ; then
+    linkArgs=`echo $args | sed -e 's/-o .*\.a /-o shr.o /'`
+    echo $linkArgs
+    eval $linkArgs
+    echo ar cr $outputFile shr.o
+    ar cr $outputFile shr.o
+    rm -f shr.o
+else
+    eval $args
+fi
diff --git a/tcl8.6/unix/tcl.m4 b/tcl8.6/unix/tcl.m4
new file mode 100644
index 0000000..1953798
--- /dev/null
+++ b/tcl8.6/unix/tcl.m4
@@ -0,0 +1,3074 @@
+#------------------------------------------------------------------------
+# SC_PATH_TCLCONFIG --
+#
+#	Locate the tclConfig.sh file and perform a sanity check on
+#	the Tcl compile flags
+#
+# Arguments:
+#	none
+#
+# Results:
+#
+#	Adds the following arguments to configure:
+#		--with-tcl=...
+#
+#	Defines the following vars:
+#		TCL_BIN_DIR	Full path to the directory containing
+#				the tclConfig.sh file
+#------------------------------------------------------------------------
+
+AC_DEFUN([SC_PATH_TCLCONFIG], [
+    #
+    # Ok, lets find the tcl configuration
+    # First, look for one uninstalled.
+    # the alternative search directory is invoked by --with-tcl
+    #
+
+    if test x"${no_tcl}" = x ; then
+	# we reset no_tcl in case something fails here
+	no_tcl=true
+	AC_ARG_WITH(tcl,
+	    AC_HELP_STRING([--with-tcl],
+		[directory containing tcl configuration (tclConfig.sh)]),
+	    with_tclconfig="${withval}")
+	AC_MSG_CHECKING([for Tcl configuration])
+	AC_CACHE_VAL(ac_cv_c_tclconfig,[
+
+	    # First check to see if --with-tcl was specified.
+	    if test x"${with_tclconfig}" != x ; then
+		case "${with_tclconfig}" in
+		    */tclConfig.sh )
+			if test -f "${with_tclconfig}"; then
+			    AC_MSG_WARN([--with-tcl argument should refer to directory containing tclConfig.sh, not to tclConfig.sh itself])
+			    with_tclconfig="`echo "${with_tclconfig}" | sed 's!/tclConfig\.sh$!!'`"
+			fi ;;
+		esac
+		if test -f "${with_tclconfig}/tclConfig.sh" ; then
+		    ac_cv_c_tclconfig="`(cd "${with_tclconfig}"; pwd)`"
+		else
+		    AC_MSG_ERROR([${with_tclconfig} directory doesn't contain tclConfig.sh])
+		fi
+	    fi
+
+	    # then check for a private Tcl installation
+	    if test x"${ac_cv_c_tclconfig}" = x ; then
+		for i in \
+			../tcl \
+			`ls -dr ../tcl[[8-9]].[[0-9]].[[0-9]]* 2>/dev/null` \
+			`ls -dr ../tcl[[8-9]].[[0-9]] 2>/dev/null` \
+			`ls -dr ../tcl[[8-9]].[[0-9]]* 2>/dev/null` \
+			../../tcl \
+			`ls -dr ../../tcl[[8-9]].[[0-9]].[[0-9]]* 2>/dev/null` \
+			`ls -dr ../../tcl[[8-9]].[[0-9]] 2>/dev/null` \
+			`ls -dr ../../tcl[[8-9]].[[0-9]]* 2>/dev/null` \
+			../../../tcl \
+			`ls -dr ../../../tcl[[8-9]].[[0-9]].[[0-9]]* 2>/dev/null` \
+			`ls -dr ../../../tcl[[8-9]].[[0-9]] 2>/dev/null` \
+			`ls -dr ../../../tcl[[8-9]].[[0-9]]* 2>/dev/null` ; do
+		    if test -f "$i/unix/tclConfig.sh" ; then
+			ac_cv_c_tclconfig="`(cd $i/unix; pwd)`"
+			break
+		    fi
+		done
+	    fi
+
+	    # on Darwin, check in Framework installation locations
+	    if test "`uname -s`" = "Darwin" -a x"${ac_cv_c_tclconfig}" = x ; then
+		for i in `ls -d ~/Library/Frameworks 2>/dev/null` \
+			`ls -d /Library/Frameworks 2>/dev/null` \
+			`ls -d /Network/Library/Frameworks 2>/dev/null` \
+			`ls -d /System/Library/Frameworks 2>/dev/null` \
+			; do
+		    if test -f "$i/Tcl.framework/tclConfig.sh" ; then
+			ac_cv_c_tclconfig="`(cd $i/Tcl.framework; pwd)`"
+			break
+		    fi
+		done
+	    fi
+
+	    # check in a few common install locations
+	    if test x"${ac_cv_c_tclconfig}" = x ; then
+		for i in `ls -d ${libdir} 2>/dev/null` \
+			`ls -d ${exec_prefix}/lib 2>/dev/null` \
+			`ls -d ${prefix}/lib 2>/dev/null` \
+			`ls -d /usr/local/lib 2>/dev/null` \
+			`ls -d /usr/contrib/lib 2>/dev/null` \
+			`ls -d /usr/pkg/lib 2>/dev/null` \
+			`ls -d /usr/lib 2>/dev/null` \
+			`ls -d /usr/lib64 2>/dev/null` \
+			`ls -d /usr/local/lib/tcl8.6 2>/dev/null` \
+			`ls -d /usr/local/lib/tcl/tcl8.6 2>/dev/null` \
+			; do
+		    if test -f "$i/tclConfig.sh" ; then
+			ac_cv_c_tclconfig="`(cd $i; pwd)`"
+			break
+		    fi
+		done
+	    fi
+
+	    # check in a few other private locations
+	    if test x"${ac_cv_c_tclconfig}" = x ; then
+		for i in \
+			${srcdir}/../tcl \
+			`ls -dr ${srcdir}/../tcl[[8-9]].[[0-9]].[[0-9]]* 2>/dev/null` \
+			`ls -dr ${srcdir}/../tcl[[8-9]].[[0-9]] 2>/dev/null` \
+			`ls -dr ${srcdir}/../tcl[[8-9]].[[0-9]]* 2>/dev/null` ; do
+		    if test -f "$i/unix/tclConfig.sh" ; then
+			ac_cv_c_tclconfig="`(cd $i/unix; pwd)`"
+			break
+		    fi
+		done
+	    fi
+	])
+
+	if test x"${ac_cv_c_tclconfig}" = x ; then
+	    TCL_BIN_DIR="# no Tcl configs found"
+	    AC_MSG_ERROR([Can't find Tcl configuration definitions. Use --with-tcl to specify a directory containing tclConfig.sh])
+	else
+	    no_tcl=
+	    TCL_BIN_DIR="${ac_cv_c_tclconfig}"
+	    AC_MSG_RESULT([found ${TCL_BIN_DIR}/tclConfig.sh])
+	fi
+    fi
+])
+
+#------------------------------------------------------------------------
+# SC_PATH_TKCONFIG --
+#
+#	Locate the tkConfig.sh file
+#
+# Arguments:
+#	none
+#
+# Results:
+#
+#	Adds the following arguments to configure:
+#		--with-tk=...
+#
+#	Defines the following vars:
+#		TK_BIN_DIR	Full path to the directory containing
+#				the tkConfig.sh file
+#------------------------------------------------------------------------
+
+AC_DEFUN([SC_PATH_TKCONFIG], [
+    #
+    # Ok, lets find the tk configuration
+    # First, look for one uninstalled.
+    # the alternative search directory is invoked by --with-tk
+    #
+
+    if test x"${no_tk}" = x ; then
+	# we reset no_tk in case something fails here
+	no_tk=true
+	AC_ARG_WITH(tk,
+	    AC_HELP_STRING([--with-tk],
+		[directory containing tk configuration (tkConfig.sh)]),
+	    with_tkconfig="${withval}")
+	AC_MSG_CHECKING([for Tk configuration])
+	AC_CACHE_VAL(ac_cv_c_tkconfig,[
+
+	    # First check to see if --with-tkconfig was specified.
+	    if test x"${with_tkconfig}" != x ; then
+		case "${with_tkconfig}" in
+		    */tkConfig.sh )
+			if test -f "${with_tkconfig}"; then
+			    AC_MSG_WARN([--with-tk argument should refer to directory containing tkConfig.sh, not to tkConfig.sh itself])
+			    with_tkconfig="`echo "${with_tkconfig}" | sed 's!/tkConfig\.sh$!!'`"
+			fi ;;
+		esac
+		if test -f "${with_tkconfig}/tkConfig.sh" ; then
+		    ac_cv_c_tkconfig="`(cd "${with_tkconfig}"; pwd)`"
+		else
+		    AC_MSG_ERROR([${with_tkconfig} directory doesn't contain tkConfig.sh])
+		fi
+	    fi
+
+	    # then check for a private Tk library
+	    if test x"${ac_cv_c_tkconfig}" = x ; then
+		for i in \
+			../tk \
+			`ls -dr ../tk[[8-9]].[[0-9]].[[0-9]]* 2>/dev/null` \
+			`ls -dr ../tk[[8-9]].[[0-9]] 2>/dev/null` \
+			`ls -dr ../tk[[8-9]].[[0-9]]* 2>/dev/null` \
+			../../tk \
+			`ls -dr ../../tk[[8-9]].[[0-9]].[[0-9]]* 2>/dev/null` \
+			`ls -dr ../../tk[[8-9]].[[0-9]] 2>/dev/null` \
+			`ls -dr ../../tk[[8-9]].[[0-9]]* 2>/dev/null` \
+			../../../tk \
+			`ls -dr ../../../tk[[8-9]].[[0-9]].[[0-9]]* 2>/dev/null` \
+			`ls -dr ../../../tk[[8-9]].[[0-9]] 2>/dev/null` \
+			`ls -dr ../../../tk[[8-9]].[[0-9]]* 2>/dev/null` ; do
+		    if test -f "$i/unix/tkConfig.sh" ; then
+			ac_cv_c_tkconfig="`(cd $i/unix; pwd)`"
+			break
+		    fi
+		done
+	    fi
+
+	    # on Darwin, check in Framework installation locations
+	    if test "`uname -s`" = "Darwin" -a x"${ac_cv_c_tkconfig}" = x ; then
+		for i in `ls -d ~/Library/Frameworks 2>/dev/null` \
+			`ls -d /Library/Frameworks 2>/dev/null` \
+			`ls -d /Network/Library/Frameworks 2>/dev/null` \
+			`ls -d /System/Library/Frameworks 2>/dev/null` \
+			; do
+		    if test -f "$i/Tk.framework/tkConfig.sh" ; then
+			ac_cv_c_tkconfig="`(cd $i/Tk.framework; pwd)`"
+			break
+		    fi
+		done
+	    fi
+
+	    # check in a few common install locations
+	    if test x"${ac_cv_c_tkconfig}" = x ; then
+		for i in `ls -d ${libdir} 2>/dev/null` \
+			`ls -d ${exec_prefix}/lib 2>/dev/null` \
+			`ls -d ${prefix}/lib 2>/dev/null` \
+			`ls -d /usr/local/lib 2>/dev/null` \
+			`ls -d /usr/contrib/lib 2>/dev/null` \
+			`ls -d /usr/pkg/lib 2>/dev/null` \
+			`ls -d /usr/lib 2>/dev/null` \
+			`ls -d /usr/lib64 2>/dev/null` \
+			`ls -d /usr/local/lib/tk8.6 2>/dev/null` \
+			`ls -d /usr/local/lib/tcl/tk8.6 2>/dev/null` \
+			; do
+		    if test -f "$i/tkConfig.sh" ; then
+			ac_cv_c_tkconfig="`(cd $i; pwd)`"
+			break
+		    fi
+		done
+	    fi
+
+	    # check in a few other private locations
+	    if test x"${ac_cv_c_tkconfig}" = x ; then
+		for i in \
+			${srcdir}/../tk \
+			`ls -dr ${srcdir}/../tk[[8-9]].[[0-9]].[[0-9]]* 2>/dev/null` \
+			`ls -dr ${srcdir}/../tk[[8-9]].[[0-9]] 2>/dev/null` \
+			`ls -dr ${srcdir}/../tk[[8-9]].[[0-9]]* 2>/dev/null` ; do
+		    if test -f "$i/unix/tkConfig.sh" ; then
+			ac_cv_c_tkconfig="`(cd $i/unix; pwd)`"
+			break
+		    fi
+		done
+	    fi
+	])
+
+	if test x"${ac_cv_c_tkconfig}" = x ; then
+	    TK_BIN_DIR="# no Tk configs found"
+	    AC_MSG_ERROR([Can't find Tk configuration definitions. Use --with-tk to specify a directory containing tkConfig.sh])
+	else
+	    no_tk=
+	    TK_BIN_DIR="${ac_cv_c_tkconfig}"
+	    AC_MSG_RESULT([found ${TK_BIN_DIR}/tkConfig.sh])
+	fi
+    fi
+])
+
+#------------------------------------------------------------------------
+# SC_LOAD_TCLCONFIG --
+#
+#	Load the tclConfig.sh file
+#
+# Arguments:
+#
+#	Requires the following vars to be set:
+#		TCL_BIN_DIR
+#
+# Results:
+#
+#	Substitutes the following vars:
+#		TCL_BIN_DIR
+#		TCL_SRC_DIR
+#		TCL_LIB_FILE
+#------------------------------------------------------------------------
+
+AC_DEFUN([SC_LOAD_TCLCONFIG], [
+    AC_MSG_CHECKING([for existence of ${TCL_BIN_DIR}/tclConfig.sh])
+
+    if test -f "${TCL_BIN_DIR}/tclConfig.sh" ; then
+        AC_MSG_RESULT([loading])
+	. "${TCL_BIN_DIR}/tclConfig.sh"
+    else
+        AC_MSG_RESULT([could not find ${TCL_BIN_DIR}/tclConfig.sh])
+    fi
+
+    # eval is required to do the TCL_DBGX substitution
+    eval "TCL_LIB_FILE=\"${TCL_LIB_FILE}\""
+    eval "TCL_STUB_LIB_FILE=\"${TCL_STUB_LIB_FILE}\""
+
+    # If the TCL_BIN_DIR is the build directory (not the install directory),
+    # then set the common variable name to the value of the build variables.
+    # For example, the variable TCL_LIB_SPEC will be set to the value
+    # of TCL_BUILD_LIB_SPEC. An extension should make use of TCL_LIB_SPEC
+    # instead of TCL_BUILD_LIB_SPEC since it will work with both an
+    # installed and uninstalled version of Tcl.
+    if test -f "${TCL_BIN_DIR}/Makefile" ; then
+        TCL_LIB_SPEC="${TCL_BUILD_LIB_SPEC}"
+        TCL_STUB_LIB_SPEC="${TCL_BUILD_STUB_LIB_SPEC}"
+        TCL_STUB_LIB_PATH="${TCL_BUILD_STUB_LIB_PATH}"
+    elif test "`uname -s`" = "Darwin"; then
+	# If Tcl was built as a framework, attempt to use the libraries
+	# from the framework at the given location so that linking works
+	# against Tcl.framework installed in an arbitrary location.
+	case ${TCL_DEFS} in
+	    *TCL_FRAMEWORK*)
+		if test -f "${TCL_BIN_DIR}/${TCL_LIB_FILE}"; then
+		    for i in "`cd "${TCL_BIN_DIR}"; pwd`" \
+			     "`cd "${TCL_BIN_DIR}"/../..; pwd`"; do
+			if test "`basename "$i"`" = "${TCL_LIB_FILE}.framework"; then
+			    TCL_LIB_SPEC="-F`dirname "$i" | sed -e 's/ /\\\\ /g'` -framework ${TCL_LIB_FILE}"
+			    break
+			fi
+		    done
+		fi
+		if test -f "${TCL_BIN_DIR}/${TCL_STUB_LIB_FILE}"; then
+		    TCL_STUB_LIB_SPEC="-L`echo "${TCL_BIN_DIR}"  | sed -e 's/ /\\\\ /g'` ${TCL_STUB_LIB_FLAG}"
+		    TCL_STUB_LIB_PATH="${TCL_BIN_DIR}/${TCL_STUB_LIB_FILE}"
+		fi
+		;;
+	esac
+    fi
+
+    # eval is required to do the TCL_DBGX substitution
+    eval "TCL_LIB_FLAG=\"${TCL_LIB_FLAG}\""
+    eval "TCL_LIB_SPEC=\"${TCL_LIB_SPEC}\""
+    eval "TCL_STUB_LIB_FLAG=\"${TCL_STUB_LIB_FLAG}\""
+    eval "TCL_STUB_LIB_SPEC=\"${TCL_STUB_LIB_SPEC}\""
+
+    AC_SUBST(TCL_VERSION)
+    AC_SUBST(TCL_PATCH_LEVEL)
+    AC_SUBST(TCL_BIN_DIR)
+    AC_SUBST(TCL_SRC_DIR)
+
+    AC_SUBST(TCL_LIB_FILE)
+    AC_SUBST(TCL_LIB_FLAG)
+    AC_SUBST(TCL_LIB_SPEC)
+
+    AC_SUBST(TCL_STUB_LIB_FILE)
+    AC_SUBST(TCL_STUB_LIB_FLAG)
+    AC_SUBST(TCL_STUB_LIB_SPEC)
+])
+
+#------------------------------------------------------------------------
+# SC_LOAD_TKCONFIG --
+#
+#	Load the tkConfig.sh file
+#
+# Arguments:
+#
+#	Requires the following vars to be set:
+#		TK_BIN_DIR
+#
+# Results:
+#
+#	Sets the following vars that should be in tkConfig.sh:
+#		TK_BIN_DIR
+#------------------------------------------------------------------------
+
+AC_DEFUN([SC_LOAD_TKCONFIG], [
+    AC_MSG_CHECKING([for existence of ${TK_BIN_DIR}/tkConfig.sh])
+
+    if test -f "${TK_BIN_DIR}/tkConfig.sh" ; then
+        AC_MSG_RESULT([loading])
+	. "${TK_BIN_DIR}/tkConfig.sh"
+    else
+        AC_MSG_RESULT([could not find ${TK_BIN_DIR}/tkConfig.sh])
+    fi
+
+    # eval is required to do the TK_DBGX substitution
+    eval "TK_LIB_FILE=\"${TK_LIB_FILE}\""
+    eval "TK_STUB_LIB_FILE=\"${TK_STUB_LIB_FILE}\""
+
+    # If the TK_BIN_DIR is the build directory (not the install directory),
+    # then set the common variable name to the value of the build variables.
+    # For example, the variable TK_LIB_SPEC will be set to the value
+    # of TK_BUILD_LIB_SPEC. An extension should make use of TK_LIB_SPEC
+    # instead of TK_BUILD_LIB_SPEC since it will work with both an
+    # installed and uninstalled version of Tcl.
+    if test -f "${TK_BIN_DIR}/Makefile" ; then
+        TK_LIB_SPEC="${TK_BUILD_LIB_SPEC}"
+        TK_STUB_LIB_SPEC="${TK_BUILD_STUB_LIB_SPEC}"
+        TK_STUB_LIB_PATH="${TK_BUILD_STUB_LIB_PATH}"
+    elif test "`uname -s`" = "Darwin"; then
+	# If Tk was built as a framework, attempt to use the libraries
+	# from the framework at the given location so that linking works
+	# against Tk.framework installed in an arbitrary location.
+	case ${TK_DEFS} in
+	    *TK_FRAMEWORK*)
+		if test -f "${TK_BIN_DIR}/${TK_LIB_FILE}"; then
+		    for i in "`cd "${TK_BIN_DIR}"; pwd`" \
+			     "`cd "${TK_BIN_DIR}"/../..; pwd`"; do
+			if test "`basename "$i"`" = "${TK_LIB_FILE}.framework"; then
+			    TK_LIB_SPEC="-F`dirname "$i" | sed -e 's/ /\\\\ /g'` -framework ${TK_LIB_FILE}"
+			    break
+			fi
+		    done
+		fi
+		if test -f "${TK_BIN_DIR}/${TK_STUB_LIB_FILE}"; then
+		    TK_STUB_LIB_SPEC="-L` echo "${TK_BIN_DIR}"  | sed -e 's/ /\\\\ /g'` ${TK_STUB_LIB_FLAG}"
+		    TK_STUB_LIB_PATH="${TK_BIN_DIR}/${TK_STUB_LIB_FILE}"
+		fi
+		;;
+	esac
+    fi
+
+    # eval is required to do the TK_DBGX substitution
+    eval "TK_LIB_FLAG=\"${TK_LIB_FLAG}\""
+    eval "TK_LIB_SPEC=\"${TK_LIB_SPEC}\""
+    eval "TK_STUB_LIB_FLAG=\"${TK_STUB_LIB_FLAG}\""
+    eval "TK_STUB_LIB_SPEC=\"${TK_STUB_LIB_SPEC}\""
+
+    AC_SUBST(TK_VERSION)
+    AC_SUBST(TK_BIN_DIR)
+    AC_SUBST(TK_SRC_DIR)
+
+    AC_SUBST(TK_LIB_FILE)
+    AC_SUBST(TK_LIB_FLAG)
+    AC_SUBST(TK_LIB_SPEC)
+
+    AC_SUBST(TK_STUB_LIB_FILE)
+    AC_SUBST(TK_STUB_LIB_FLAG)
+    AC_SUBST(TK_STUB_LIB_SPEC)
+])
+
+#------------------------------------------------------------------------
+# SC_PROG_TCLSH
+#	Locate a tclsh shell installed on the system path. This macro
+#	will only find a Tcl shell that already exists on the system.
+#	It will not find a Tcl shell in the Tcl build directory or
+#	a Tcl shell that has been installed from the Tcl build directory.
+#	If a Tcl shell can't be located on the PATH, then TCLSH_PROG will
+#	be set to "". Extensions should take care not to create Makefile
+#	rules that are run by default and depend on TCLSH_PROG. An
+#	extension can't assume that an executable Tcl shell exists at
+#	build time.
+#
+# Arguments:
+#	none
+#
+# Results:
+#	Substitutes the following vars:
+#		TCLSH_PROG
+#------------------------------------------------------------------------
+
+AC_DEFUN([SC_PROG_TCLSH], [
+    AC_MSG_CHECKING([for tclsh])
+    AC_CACHE_VAL(ac_cv_path_tclsh, [
+	search_path=`echo ${PATH} | sed -e 's/:/ /g'`
+	for dir in $search_path ; do
+	    for j in `ls -r $dir/tclsh[[8-9]]* 2> /dev/null` \
+		    `ls -r $dir/tclsh* 2> /dev/null` ; do
+		if test x"$ac_cv_path_tclsh" = x ; then
+		    if test -f "$j" ; then
+			ac_cv_path_tclsh=$j
+			break
+		    fi
+		fi
+	    done
+	done
+    ])
+
+    if test -f "$ac_cv_path_tclsh" ; then
+	TCLSH_PROG="$ac_cv_path_tclsh"
+	AC_MSG_RESULT([$TCLSH_PROG])
+    else
+	# It is not an error if an installed version of Tcl can't be located.
+	TCLSH_PROG=""
+	AC_MSG_RESULT([No tclsh found on PATH])
+    fi
+    AC_SUBST(TCLSH_PROG)
+])
+
+#------------------------------------------------------------------------
+# SC_BUILD_TCLSH
+#	Determine the fully qualified path name of the tclsh executable
+#	in the Tcl build directory. This macro will correctly determine
+#	the name of the tclsh executable even if tclsh has not yet
+#	been built in the build directory. The build tclsh must be used
+#	when running tests from an extension build directory. It is not
+#	correct to use the TCLSH_PROG in cases like this.
+#
+# Arguments:
+#	none
+#
+# Results:
+#	Substitutes the following values:
+#		BUILD_TCLSH
+#------------------------------------------------------------------------
+
+AC_DEFUN([SC_BUILD_TCLSH], [
+    AC_MSG_CHECKING([for tclsh in Tcl build directory])
+    BUILD_TCLSH="${TCL_BIN_DIR}"/tclsh
+    AC_MSG_RESULT([$BUILD_TCLSH])
+    AC_SUBST(BUILD_TCLSH)
+])
+
+#------------------------------------------------------------------------
+# SC_ENABLE_SHARED --
+#
+#	Allows the building of shared libraries
+#
+# Arguments:
+#	none
+#
+# Results:
+#
+#	Adds the following arguments to configure:
+#		--enable-shared=yes|no
+#
+#	Defines the following vars:
+#		STATIC_BUILD	Used for building import/export libraries
+#				on Windows.
+#
+#	Sets the following vars:
+#		SHARED_BUILD	Value of 1 or 0
+#------------------------------------------------------------------------
+
+AC_DEFUN([SC_ENABLE_SHARED], [
+    AC_MSG_CHECKING([how to build libraries])
+    AC_ARG_ENABLE(shared,
+	AC_HELP_STRING([--enable-shared],
+	    [build and link with shared libraries (default: on)]),
+	[tcl_ok=$enableval], [tcl_ok=yes])
+
+    if test "${enable_shared+set}" = set; then
+	enableval="$enable_shared"
+	tcl_ok=$enableval
+    else
+	tcl_ok=yes
+    fi
+
+    if test "$tcl_ok" = "yes" ; then
+	AC_MSG_RESULT([shared])
+	SHARED_BUILD=1
+    else
+	AC_MSG_RESULT([static])
+	SHARED_BUILD=0
+	AC_DEFINE(STATIC_BUILD, 1, [Is this a static build?])
+    fi
+])
+
+#------------------------------------------------------------------------
+# SC_ENABLE_FRAMEWORK --
+#
+#	Allows the building of shared libraries into frameworks
+#
+# Arguments:
+#	none
+#
+# Results:
+#
+#	Adds the following arguments to configure:
+#		--enable-framework=yes|no
+#
+#	Sets the following vars:
+#		FRAMEWORK_BUILD	Value of 1 or 0
+#------------------------------------------------------------------------
+
+AC_DEFUN([SC_ENABLE_FRAMEWORK], [
+    if test "`uname -s`" = "Darwin" ; then
+	AC_MSG_CHECKING([how to package libraries])
+	AC_ARG_ENABLE(framework,
+	    AC_HELP_STRING([--enable-framework],
+		[package shared libraries in MacOSX frameworks (default: off)]),
+	    [enable_framework=$enableval], [enable_framework=no])
+	if test $enable_framework = yes; then
+	    if test $SHARED_BUILD = 0; then
+		AC_MSG_WARN([Frameworks can only be built if --enable-shared is yes])
+		enable_framework=no
+	    fi
+	    if test $tcl_corefoundation = no; then
+		AC_MSG_WARN([Frameworks can only be used when CoreFoundation is available])
+		enable_framework=no
+	    fi
+	fi
+	if test $enable_framework = yes; then
+	    AC_MSG_RESULT([framework])
+	    FRAMEWORK_BUILD=1
+	else
+	    if test $SHARED_BUILD = 1; then
+		AC_MSG_RESULT([shared library])
+	    else
+		AC_MSG_RESULT([static library])
+	    fi
+	    FRAMEWORK_BUILD=0
+	fi
+    fi
+])
+
+#------------------------------------------------------------------------
+# SC_ENABLE_THREADS --
+#
+#	Specify if thread support should be enabled
+#
+# Arguments:
+#	none
+#
+# Results:
+#
+#	Adds the following arguments to configure:
+#		--enable-threads
+#
+#	Sets the following vars:
+#		THREADS_LIBS	Thread library(s)
+#
+#	Defines the following vars:
+#		TCL_THREADS
+#		_REENTRANT
+#		_THREAD_SAFE
+#------------------------------------------------------------------------
+
+AC_DEFUN([SC_ENABLE_THREADS], [
+    AC_ARG_ENABLE(threads,
+	AC_HELP_STRING([--enable-threads],
+	    [build with threads (default: on)]),
+	[tcl_ok=$enableval], [tcl_ok=yes])
+
+    if test "${TCL_THREADS}" = 1; then
+	tcl_threaded_core=1;
+    fi
+
+    if test "$tcl_ok" = "yes" -o "${TCL_THREADS}" = 1; then
+	TCL_THREADS=1
+	# USE_THREAD_ALLOC tells us to try the special thread-based
+	# allocator that significantly reduces lock contention
+	AC_DEFINE(USE_THREAD_ALLOC, 1,
+	    [Do we want to use the threaded memory allocator?])
+	AC_DEFINE(_REENTRANT, 1, [Do we want the reentrant OS API?])
+	if test "`uname -s`" = "SunOS" ; then
+	    AC_DEFINE(_POSIX_PTHREAD_SEMANTICS, 1,
+		    [Do we really want to follow the standard? Yes we do!])
+	fi
+	AC_DEFINE(_THREAD_SAFE, 1, [Do we want the thread-safe OS API?])
+	AC_CHECK_LIB(pthread,pthread_mutex_init,tcl_ok=yes,tcl_ok=no)
+	if test "$tcl_ok" = "no"; then
+	    # Check a little harder for __pthread_mutex_init in the same
+	    # library, as some systems hide it there until pthread.h is
+	    # defined.  We could alternatively do an AC_TRY_COMPILE with
+	    # pthread.h, but that will work with libpthread really doesn't
+	    # exist, like AIX 4.2.  [Bug: 4359]
+	    AC_CHECK_LIB(pthread, __pthread_mutex_init,
+		tcl_ok=yes, tcl_ok=no)
+	fi
+
+	if test "$tcl_ok" = "yes"; then
+	    # The space is needed
+	    THREADS_LIBS=" -lpthread"
+	else
+	    AC_CHECK_LIB(pthreads, pthread_mutex_init,
+		tcl_ok=yes, tcl_ok=no)
+	    if test "$tcl_ok" = "yes"; then
+		# The space is needed
+		THREADS_LIBS=" -lpthreads"
+	    else
+		AC_CHECK_LIB(c, pthread_mutex_init,
+		    tcl_ok=yes, tcl_ok=no)
+		if test "$tcl_ok" = "no"; then
+		    AC_CHECK_LIB(c_r, pthread_mutex_init,
+			tcl_ok=yes, tcl_ok=no)
+		    if test "$tcl_ok" = "yes"; then
+			# The space is needed
+			THREADS_LIBS=" -pthread"
+		    else
+			TCL_THREADS=0
+			AC_MSG_WARN([Don't know how to find pthread lib on your system - you must disable thread support or edit the LIBS in the Makefile...])
+		    fi
+		fi
+	    fi
+	fi
+
+	# Does the pthread-implementation provide
+	# 'pthread_attr_setstacksize' ?
+
+	ac_saved_libs=$LIBS
+	LIBS="$LIBS $THREADS_LIBS"
+	AC_CHECK_FUNCS(pthread_attr_setstacksize pthread_atfork)
+	LIBS=$ac_saved_libs
+    else
+	TCL_THREADS=0
+    fi
+    # Do checking message here to not mess up interleaved configure output
+    AC_MSG_CHECKING([for building with threads])
+    if test "${TCL_THREADS}" = 1; then
+	AC_DEFINE(TCL_THREADS, 1, [Are we building with threads enabled?])
+	if test "${tcl_threaded_core}" = 1; then
+	    AC_MSG_RESULT([yes (threaded core)])
+	else
+	    AC_MSG_RESULT([yes])
+	fi
+    else
+	AC_MSG_RESULT([no])
+    fi
+
+    AC_SUBST(TCL_THREADS)
+])
+
+#------------------------------------------------------------------------
+# SC_ENABLE_SYMBOLS --
+#
+#	Specify if debugging symbols should be used.
+#	Memory (TCL_MEM_DEBUG) and compile (TCL_COMPILE_DEBUG) debugging
+#	can also be enabled.
+#
+# Arguments:
+#	none
+#
+#	Requires the following vars to be set in the Makefile:
+#		CFLAGS_DEBUG
+#		CFLAGS_OPTIMIZE
+#		LDFLAGS_DEBUG
+#		LDFLAGS_OPTIMIZE
+#
+# Results:
+#
+#	Adds the following arguments to configure:
+#		--enable-symbols
+#
+#	Defines the following vars:
+#		CFLAGS_DEFAULT	Sets to $(CFLAGS_DEBUG) if true
+#				Sets to $(CFLAGS_OPTIMIZE) if false
+#		LDFLAGS_DEFAULT	Sets to $(LDFLAGS_DEBUG) if true
+#				Sets to $(LDFLAGS_OPTIMIZE) if false
+#		DBGX		Formerly used as debug library extension;
+#				always blank now.
+#------------------------------------------------------------------------
+
+AC_DEFUN([SC_ENABLE_SYMBOLS], [
+    AC_MSG_CHECKING([for build with symbols])
+    AC_ARG_ENABLE(symbols,
+	AC_HELP_STRING([--enable-symbols],
+	    [build with debugging symbols (default: off)]),
+	[tcl_ok=$enableval], [tcl_ok=no])
+# FIXME: Currently, LDFLAGS_DEFAULT is not used, it should work like CFLAGS_DEFAULT.
+    DBGX=""
+    if test "$tcl_ok" = "no"; then
+	CFLAGS_DEFAULT='$(CFLAGS_OPTIMIZE)'
+	LDFLAGS_DEFAULT='$(LDFLAGS_OPTIMIZE)'
+	AC_DEFINE(NDEBUG, 1, [Is no debugging enabled?])
+	AC_MSG_RESULT([no])
+	AC_DEFINE(TCL_CFG_OPTIMIZED, 1, [Is this an optimized build?])
+    else
+	CFLAGS_DEFAULT='$(CFLAGS_DEBUG)'
+	LDFLAGS_DEFAULT='$(LDFLAGS_DEBUG)'
+	if test "$tcl_ok" = "yes"; then
+	    AC_MSG_RESULT([yes (standard debugging)])
+	fi
+    fi
+    AC_SUBST(CFLAGS_DEFAULT)
+    AC_SUBST(LDFLAGS_DEFAULT)
+
+    if test "$tcl_ok" = "mem" -o "$tcl_ok" = "all"; then
+	AC_DEFINE(TCL_MEM_DEBUG, 1, [Is memory debugging enabled?])
+    fi
+
+    ifelse($1,bccdebug,dnl Only enable 'compile' for the Tcl core itself
+	if test "$tcl_ok" = "compile" -o "$tcl_ok" = "all"; then
+	    AC_DEFINE(TCL_COMPILE_DEBUG, 1, [Is bytecode debugging enabled?])
+	    AC_DEFINE(TCL_COMPILE_STATS, 1, [Are bytecode statistics enabled?])
+	fi)
+
+    if test "$tcl_ok" != "yes" -a "$tcl_ok" != "no"; then
+	if test "$tcl_ok" = "all"; then
+	    AC_MSG_RESULT([enabled symbols mem ]ifelse($1,bccdebug,[compile ])[debugging])
+	else
+	    AC_MSG_RESULT([enabled $tcl_ok debugging])
+	fi
+    fi
+])
+
+#------------------------------------------------------------------------
+# SC_ENABLE_LANGINFO --
+#
+#	Allows use of modern nl_langinfo check for better l10n.
+#	This is only relevant for Unix.
+#
+# Arguments:
+#	none
+#
+# Results:
+#
+#	Adds the following arguments to configure:
+#		--enable-langinfo=yes|no (default is yes)
+#
+#	Defines the following vars:
+#		HAVE_LANGINFO	Triggers use of nl_langinfo if defined.
+#------------------------------------------------------------------------
+
+AC_DEFUN([SC_ENABLE_LANGINFO], [
+    AC_ARG_ENABLE(langinfo,
+	AC_HELP_STRING([--enable-langinfo],
+	    [use nl_langinfo if possible to determine encoding at startup, otherwise use old heuristic (default: on)]),
+	[langinfo_ok=$enableval], [langinfo_ok=yes])
+
+    HAVE_LANGINFO=0
+    if test "$langinfo_ok" = "yes"; then
+	AC_CHECK_HEADER(langinfo.h,[langinfo_ok=yes],[langinfo_ok=no])
+    fi
+    AC_MSG_CHECKING([whether to use nl_langinfo])
+    if test "$langinfo_ok" = "yes"; then
+	AC_CACHE_VAL(tcl_cv_langinfo_h, [
+	    AC_TRY_COMPILE([#include <langinfo.h>], [nl_langinfo(CODESET);],
+		    [tcl_cv_langinfo_h=yes],[tcl_cv_langinfo_h=no])])
+	AC_MSG_RESULT([$tcl_cv_langinfo_h])
+	if test $tcl_cv_langinfo_h = yes; then
+	    AC_DEFINE(HAVE_LANGINFO, 1, [Do we have nl_langinfo()?])
+	fi
+    else
+	AC_MSG_RESULT([$langinfo_ok])
+    fi
+])
+
+#--------------------------------------------------------------------
+# SC_CONFIG_MANPAGES
+#
+#	Decide whether to use symlinks for linking the manpages,
+#	whether to compress the manpages after installation, and
+#	whether to add a package name suffix to the installed
+#	manpages to avoidfile name clashes.
+#	If compression is enabled also find out what file name suffix
+#	the given compression program is using.
+#
+# Arguments:
+#	none
+#
+# Results:
+#
+#	Adds the following arguments to configure:
+#		--enable-man-symlinks
+#		--enable-man-compression=PROG
+#		--enable-man-suffix[=STRING]
+#
+#	Defines the following variable:
+#
+#	MAN_FLAGS -	The apropriate flags for installManPage
+#			according to the user's selection.
+#
+#--------------------------------------------------------------------
+
+AC_DEFUN([SC_CONFIG_MANPAGES], [
+    AC_MSG_CHECKING([whether to use symlinks for manpages])
+    AC_ARG_ENABLE(man-symlinks,
+	AC_HELP_STRING([--enable-man-symlinks],
+	    [use symlinks for the manpages (default: off)]),
+	test "$enableval" != "no" && MAN_FLAGS="$MAN_FLAGS --symlinks",
+	enableval="no")
+    AC_MSG_RESULT([$enableval])
+
+    AC_MSG_CHECKING([whether to compress the manpages])
+    AC_ARG_ENABLE(man-compression,
+	AC_HELP_STRING([--enable-man-compression=PROG],
+	    [compress the manpages with PROG (default: off)]),
+	[case $enableval in
+	    yes) AC_MSG_ERROR([missing argument to --enable-man-compression]);;
+	    no)  ;;
+	    *)   MAN_FLAGS="$MAN_FLAGS --compress $enableval";;
+	esac],
+	enableval="no")
+    AC_MSG_RESULT([$enableval])
+    if test "$enableval" != "no"; then
+	AC_MSG_CHECKING([for compressed file suffix])
+	touch TeST
+	$enableval TeST
+	Z=`ls TeST* | sed 's/^....//'`
+	rm -f TeST*
+	MAN_FLAGS="$MAN_FLAGS --extension $Z"
+	AC_MSG_RESULT([$Z])
+    fi
+
+    AC_MSG_CHECKING([whether to add a package name suffix for the manpages])
+    AC_ARG_ENABLE(man-suffix,
+	AC_HELP_STRING([--enable-man-suffix=STRING],
+	    [use STRING as a suffix to manpage file names (default: no, AC_PACKAGE_NAME if enabled without specifying STRING)]),
+	[case $enableval in
+	    yes) enableval="AC_PACKAGE_NAME" MAN_FLAGS="$MAN_FLAGS --suffix $enableval";;
+	    no)  ;;
+	    *)   MAN_FLAGS="$MAN_FLAGS --suffix $enableval";;
+	esac],
+	enableval="no")
+    AC_MSG_RESULT([$enableval])
+
+    AC_SUBST(MAN_FLAGS)
+])
+
+#--------------------------------------------------------------------
+# SC_CONFIG_SYSTEM
+#
+#	Determine what the system is (some things cannot be easily checked
+#	on a feature-driven basis, alas). This can usually be done via the
+#	"uname" command, but there are a few systems, like Next, where
+#	this doesn't work.
+#
+# Arguments:
+#	none
+#
+# Results:
+#	Defines the following var:
+#
+#	system -	System/platform/version identification code.
+#
+#--------------------------------------------------------------------
+
+AC_DEFUN([SC_CONFIG_SYSTEM], [
+    AC_CACHE_CHECK([system version], tcl_cv_sys_version, [
+	if test -f /usr/lib/NextStep/software_version; then
+	    tcl_cv_sys_version=NEXTSTEP-`awk '/3/,/3/' /usr/lib/NextStep/software_version`
+	else
+	    tcl_cv_sys_version=`uname -s`-`uname -r`
+	    if test "$?" -ne 0 ; then
+		AC_MSG_WARN([can't find uname command])
+		tcl_cv_sys_version=unknown
+	    else
+		# Special check for weird MP-RAS system (uname returns weird
+		# results, and the version is kept in special file).
+
+		if test -r /etc/.relid -a "X`uname -n`" = "X`uname -s`" ; then
+		    tcl_cv_sys_version=MP-RAS-`awk '{print $[3]}' /etc/.relid`
+		fi
+		if test "`uname -s`" = "AIX" ; then
+		    tcl_cv_sys_version=AIX-`uname -v`.`uname -r`
+		fi
+	    fi
+	fi
+    ])
+    system=$tcl_cv_sys_version
+])
+
+#--------------------------------------------------------------------
+# SC_CONFIG_CFLAGS
+#
+#	Try to determine the proper flags to pass to the compiler
+#	for building shared libraries and other such nonsense.
+#
+# Arguments:
+#	none
+#
+# Results:
+#
+#	Defines and substitutes the following vars:
+#
+#       DL_OBJS -       Name of the object file that implements dynamic
+#                       loading for Tcl on this system.
+#       DL_LIBS -       Library file(s) to include in tclsh and other base
+#                       applications in order for the "load" command to work.
+#       LDFLAGS -      Flags to pass to the compiler when linking object
+#                       files into an executable application binary such
+#                       as tclsh.
+#       LD_SEARCH_FLAGS-Flags to pass to ld, such as "-R /usr/local/tcl/lib",
+#                       that tell the run-time dynamic linker where to look
+#                       for shared libraries such as libtcl.so.  Depends on
+#                       the variable LIB_RUNTIME_DIR in the Makefile. Could
+#                       be the same as CC_SEARCH_FLAGS if ${CC} is used to link.
+#       CC_SEARCH_FLAGS-Flags to pass to ${CC}, such as "-Wl,-rpath,/usr/local/tcl/lib",
+#                       that tell the run-time dynamic linker where to look
+#                       for shared libraries such as libtcl.so.  Depends on
+#                       the variable LIB_RUNTIME_DIR in the Makefile.
+#       MAKE_LIB -      Command to execute to build the a library;
+#                       differs when building shared or static.
+#       MAKE_STUB_LIB -
+#                       Command to execute to build a stub library.
+#       INSTALL_LIB -   Command to execute to install a library;
+#                       differs when building shared or static.
+#       INSTALL_STUB_LIB -
+#                       Command to execute to install a stub library.
+#       STLIB_LD -      Base command to use for combining object files
+#                       into a static library.
+#       SHLIB_CFLAGS -  Flags to pass to cc when compiling the components
+#                       of a shared library (may request position-independent
+#                       code, among other things).
+#       SHLIB_LD -      Base command to use for combining object files
+#                       into a shared library.
+#       SHLIB_LD_LIBS - Dependent libraries for the linker to scan when
+#                       creating shared libraries.  This symbol typically
+#                       goes at the end of the "ld" commands that build
+#                       shared libraries. The value of the symbol defaults to
+#                       "${LIBS}" if all of the dependent libraries should
+#                       be specified when creating a shared library.  If
+#                       dependent libraries should not be specified (as on
+#                       SunOS 4.x, where they cause the link to fail, or in
+#                       general if Tcl and Tk aren't themselves shared
+#                       libraries), then this symbol has an empty string
+#                       as its value.
+#       SHLIB_SUFFIX -  Suffix to use for the names of dynamically loadable
+#                       extensions.  An empty string means we don't know how
+#                       to use shared libraries on this platform.
+# TCL_SHLIB_LD_EXTRAS - Additional element which are added to SHLIB_LD_LIBS
+#  TK_SHLIB_LD_EXTRAS   for the build of Tcl and Tk, but not recorded in the
+#                       tclConfig.sh, since they are only used for the build
+#                       of Tcl and Tk.
+#                       Examples: MacOS X records the library version and
+#                       compatibility version in the shared library.  But
+#                       of course the Tcl version of this is only used for Tcl.
+#       LIB_SUFFIX -    Specifies everything that comes after the "libfoo"
+#                       in a static or shared library name, using the $VERSION variable
+#                       to put the version in the right place.  This is used
+#                       by platforms that need non-standard library names.
+#                       Examples:  ${VERSION}.so.1.1 on NetBSD, since it needs
+#                       to have a version after the .so, and ${VERSION}.a
+#                       on AIX, since a shared library needs to have
+#                       a .a extension whereas shared objects for loadable
+#                       extensions have a .so extension.  Defaults to
+#                       ${VERSION}${SHLIB_SUFFIX}.
+#       TCL_LIBS -
+#                       Libs to use when linking Tcl shell or some other
+#                       shell that includes Tcl libs.
+#	CFLAGS_DEBUG -
+#			Flags used when running the compiler in debug mode
+#	CFLAGS_OPTIMIZE -
+#			Flags used when running the compiler in optimize mode
+#	CFLAGS -	Additional CFLAGS added as necessary (usually 64-bit)
+#
+#--------------------------------------------------------------------
+
+AC_DEFUN([SC_CONFIG_CFLAGS], [
+
+    # Step 0.a: Enable 64 bit support?
+
+    AC_MSG_CHECKING([if 64bit support is requested])
+    AC_ARG_ENABLE(64bit,
+	AC_HELP_STRING([--enable-64bit],
+	    [enable 64bit support (default: off)]),
+	[do64bit=$enableval], [do64bit=no])
+    AC_MSG_RESULT([$do64bit])
+
+    # Step 0.b: Enable Solaris 64 bit VIS support?
+
+    AC_MSG_CHECKING([if 64bit Sparc VIS support is requested])
+    AC_ARG_ENABLE(64bit-vis,
+	AC_HELP_STRING([--enable-64bit-vis],
+	    [enable 64bit Sparc VIS support (default: off)]),
+	[do64bitVIS=$enableval], [do64bitVIS=no])
+    AC_MSG_RESULT([$do64bitVIS])
+    # Force 64bit on with VIS
+    AS_IF([test "$do64bitVIS" = "yes"], [do64bit=yes])
+
+    # Step 0.c: Check if visibility support is available. Do this here so
+    # that platform specific alternatives can be used below if this fails.
+
+    AC_CACHE_CHECK([if compiler supports visibility "hidden"],
+	tcl_cv_cc_visibility_hidden, [
+	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -Werror"
+	AC_TRY_LINK([
+	    extern __attribute__((__visibility__("hidden"))) void f(void);
+	    void f(void) {}], [f();], tcl_cv_cc_visibility_hidden=yes,
+	    tcl_cv_cc_visibility_hidden=no)
+	CFLAGS=$hold_cflags])
+    AS_IF([test $tcl_cv_cc_visibility_hidden = yes], [
+	AC_DEFINE(MODULE_SCOPE,
+	    [extern __attribute__((__visibility__("hidden")))],
+	    [Compiler support for module scope symbols])
+	AC_DEFINE(HAVE_HIDDEN, [1], [Compiler support for module scope symbols])
+    ])
+
+    # Step 0.d: Disable -rpath support?
+
+    AC_MSG_CHECKING([if rpath support is requested])
+    AC_ARG_ENABLE(rpath,
+	AC_HELP_STRING([--disable-rpath],
+	    [disable rpath support (default: on)]),
+	[doRpath=$enableval], [doRpath=yes])
+    AC_MSG_RESULT([$doRpath])
+
+    # Step 1: set the variable "system" to hold the name and version number
+    # for the system.
+
+    SC_CONFIG_SYSTEM
+
+    # Step 2: check for existence of -ldl library.  This is needed because
+    # Linux can use either -ldl or -ldld for dynamic loading.
+
+    AC_CHECK_LIB(dl, dlopen, have_dl=yes, have_dl=no)
+
+    # Require ranlib early so we can override it in special cases below.
+
+    AC_REQUIRE([AC_PROG_RANLIB])
+
+    # Step 3: set configuration options based on system name and version.
+
+    do64bit_ok=no
+    # default to '{$LIBS}' and set to "" on per-platform necessary basis
+    SHLIB_LD_LIBS='${LIBS}'
+    LDFLAGS_ORIG="$LDFLAGS"
+    # When ld needs options to work in 64-bit mode, put them in
+    # LDFLAGS_ARCH so they eventually end up in LDFLAGS even if [load]
+    # is disabled by the user. [Bug 1016796]
+    LDFLAGS_ARCH=""
+    UNSHARED_LIB_SUFFIX=""
+    TCL_TRIM_DOTS='`echo ${VERSION} | tr -d .`'
+    ECHO_VERSION='`echo ${VERSION}`'
+    TCL_LIB_VERSIONS_OK=ok
+    CFLAGS_DEBUG=-g
+    AS_IF([test "$GCC" = yes], [
+	CFLAGS_OPTIMIZE=-O2
+	CFLAGS_WARNING="-Wall"
+    ], [
+	CFLAGS_OPTIMIZE=-O
+	CFLAGS_WARNING=""
+    ])
+    AC_CHECK_TOOL(AR, ar)
+    STLIB_LD='${AR} cr'
+    LD_LIBRARY_PATH_VAR="LD_LIBRARY_PATH"
+    PLAT_OBJS=""
+    PLAT_SRCS=""
+    LDAIX_SRC=""
+    AS_IF([test "x${SHLIB_VERSION}" = x],[SHLIB_VERSION=".1.0"],[SHLIB_VERSION=".${SHLIB_VERSION}"])
+    case $system in
+	AIX-*)
+	    AS_IF([test "${TCL_THREADS}" = "1" -a "$GCC" != "yes"], [
+		# AIX requires the _r compiler when gcc isn't being used
+		case "${CC}" in
+		    *_r|*_r\ *)
+			# ok ...
+			;;
+		    *)
+			# Make sure only first arg gets _r
+		    	CC=`echo "$CC" | sed -e 's/^\([[^ ]]*\)/\1_r/'`
+			;;
+		esac
+		AC_MSG_RESULT([Using $CC for compiling with threads])
+	    ])
+	    LIBS="$LIBS -lc"
+	    SHLIB_CFLAGS=""
+	    SHLIB_SUFFIX=".so"
+
+	    DL_OBJS="tclLoadDl.o"
+	    LD_LIBRARY_PATH_VAR="LIBPATH"
+
+	    # ldAix No longer needed with use of -bexpall/-brtl
+	    # but some extensions may still reference it
+	    LDAIX_SRC='$(UNIX_DIR)/ldAix'
+
+	    # Check to enable 64-bit flags for compiler/linker
+	    AS_IF([test "$do64bit" = yes], [
+		AS_IF([test "$GCC" = yes], [
+		    AC_MSG_WARN([64bit mode not supported with GCC on $system])
+		], [
+		    do64bit_ok=yes
+		    CFLAGS="$CFLAGS -q64"
+		    LDFLAGS_ARCH="-q64"
+		    RANLIB="${RANLIB} -X64"
+		    AR="${AR} -X64"
+		    SHLIB_LD_FLAGS="-b64"
+		])
+	    ])
+
+	    AS_IF([test "`uname -m`" = ia64], [
+		# AIX-5 uses ELF style dynamic libraries on IA-64, but not PPC
+		SHLIB_LD="/usr/ccs/bin/ld -G -z text"
+		# AIX-5 has dl* in libc.so
+		DL_LIBS=""
+		AS_IF([test "$GCC" = yes], [
+		    CC_SEARCH_FLAGS='-Wl,-R,${LIB_RUNTIME_DIR}'
+		], [
+		    CC_SEARCH_FLAGS='-R${LIB_RUNTIME_DIR}'
+		])
+		LD_SEARCH_FLAGS='-R ${LIB_RUNTIME_DIR}'
+	    ], [
+		AS_IF([test "$GCC" = yes], [
+		    SHLIB_LD='${CC} -shared -Wl,-bexpall'
+		], [
+		    SHLIB_LD="/bin/ld -bhalt:4 -bM:SRE -bexpall -H512 -T512 -bnoentry"
+		    LDFLAGS="$LDFLAGS -brtl"
+		])
+		SHLIB_LD="${SHLIB_LD} ${SHLIB_LD_FLAGS}"
+		DL_LIBS="-ldl"
+		CC_SEARCH_FLAGS='-L${LIB_RUNTIME_DIR}'
+		LD_SEARCH_FLAGS=${CC_SEARCH_FLAGS}
+	    ])
+	    ;;
+	BeOS*)
+	    SHLIB_CFLAGS="-fPIC"
+	    SHLIB_LD='${CC} -nostart'
+	    SHLIB_SUFFIX=".so"
+	    DL_OBJS="tclLoadDl.o"
+	    DL_LIBS="-ldl"
+
+	    #-----------------------------------------------------------
+	    # Check for inet_ntoa in -lbind, for BeOS (which also needs
+	    # -lsocket, even if the network functions are in -lnet which
+	    # is always linked to, for compatibility.
+	    #-----------------------------------------------------------
+	    AC_CHECK_LIB(bind, inet_ntoa, [LIBS="$LIBS -lbind -lsocket"])
+	    ;;
+	BSD/OS-2.1*|BSD/OS-3*)
+	    SHLIB_CFLAGS=""
+	    SHLIB_LD="shlicc -r"
+	    SHLIB_SUFFIX=".so"
+	    DL_OBJS="tclLoadDl.o"
+	    DL_LIBS="-ldl"
+	    CC_SEARCH_FLAGS=""
+	    LD_SEARCH_FLAGS=""
+	    ;;
+	BSD/OS-4.*)
+	    SHLIB_CFLAGS="-export-dynamic -fPIC"
+	    SHLIB_LD='${CC} -shared'
+	    SHLIB_SUFFIX=".so"
+	    DL_OBJS="tclLoadDl.o"
+	    DL_LIBS="-ldl"
+	    LDFLAGS="$LDFLAGS -export-dynamic"
+	    CC_SEARCH_FLAGS=""
+	    LD_SEARCH_FLAGS=""
+	    ;;
+	CYGWIN_*|MINGW32*)
+	    SHLIB_CFLAGS=""
+	    SHLIB_LD='${CC} -shared'
+	    SHLIB_SUFFIX=".dll"
+	    DL_OBJS="tclLoadDl.o"
+	    PLAT_OBJS='${CYGWIN_OBJS}'
+	    PLAT_SRCS='${CYGWIN_SRCS}'
+	    DL_LIBS="-ldl"
+	    CC_SEARCH_FLAGS=""
+	    LD_SEARCH_FLAGS=""
+	    TCL_NEEDS_EXP_FILE=1
+	    TCL_EXPORT_FILE_SUFFIX='${VERSION}\$\{DBGX\}.dll.a'
+	    SHLIB_LD_LIBS="${SHLIB_LD_LIBS} -Wl,--out-implib,\$[@].a"
+	    AC_CACHE_CHECK(for Cygwin version of gcc,
+		ac_cv_cygwin,
+		AC_TRY_COMPILE([
+		#ifdef __CYGWIN__
+		    #error cygwin
+		#endif
+		], [],
+		ac_cv_cygwin=no,
+		ac_cv_cygwin=yes)
+	    )
+	    if test "$ac_cv_cygwin" = "no"; then
+		AC_MSG_ERROR([${CC} is not a cygwin compiler.])
+	    fi
+	    if test "x${TCL_THREADS}" = "x0"; then
+		AC_MSG_ERROR([CYGWIN compile is only supported with --enable-threads])
+	    fi
+	    do64bit_ok=yes
+	    if test "x${SHARED_BUILD}" = "x1"; then
+		echo "running cd ../win; ${CONFIG_SHELL-/bin/sh} ./configure $ac_configure_args"
+		# The eval makes quoting arguments work.
+		if cd ../win; eval ${CONFIG_SHELL-/bin/sh} ./configure $ac_configure_args; cd ../unix
+		then :
+		else
+		    { echo "configure: error: configure failed for ../win" 1>&2; exit 1; }
+		fi
+	    fi
+	    ;;
+	dgux*)
+	    SHLIB_CFLAGS="-K PIC"
+	    SHLIB_LD='${CC} -G'
+	    SHLIB_LD_LIBS=""
+	    SHLIB_SUFFIX=".so"
+	    DL_OBJS="tclLoadDl.o"
+	    DL_LIBS="-ldl"
+	    CC_SEARCH_FLAGS=""
+	    LD_SEARCH_FLAGS=""
+	    ;;
+	Haiku*)
+	    LDFLAGS="$LDFLAGS -Wl,--export-dynamic"
+	    SHLIB_CFLAGS="-fPIC"
+	    SHLIB_SUFFIX=".so"
+	    SHLIB_LD='${CC} ${CFLAGS} ${LDFLAGS} -shared'
+	    DL_OBJS="tclLoadDl.o"
+	    DL_LIBS="-lroot"
+	    AC_CHECK_LIB(network, inet_ntoa, [LIBS="$LIBS -lnetwork"])
+	    ;;
+	HP-UX-*.11.*)
+	    # Use updated header definitions where possible
+	    AC_DEFINE(_XOPEN_SOURCE_EXTENDED, 1, [Do we want to use the XOPEN network library?])
+	    AC_DEFINE(_XOPEN_SOURCE, 1, [Do we want to use the XOPEN network library?])
+	    LIBS="$LIBS -lxnet"               # Use the XOPEN network library
+
+	    AS_IF([test "`uname -m`" = ia64], [
+		SHLIB_SUFFIX=".so"
+	    ], [
+		SHLIB_SUFFIX=".sl"
+	    ])
+	    AC_CHECK_LIB(dld, shl_load, tcl_ok=yes, tcl_ok=no)
+	    AS_IF([test "$tcl_ok" = yes], [
+		SHLIB_CFLAGS="+z"
+		SHLIB_LD="ld -b"
+		DL_OBJS="tclLoadShl.o"
+		DL_LIBS="-ldld"
+		LDFLAGS="$LDFLAGS -Wl,-E"
+		CC_SEARCH_FLAGS='-Wl,+s,+b,${LIB_RUNTIME_DIR}:.'
+		LD_SEARCH_FLAGS='+s +b ${LIB_RUNTIME_DIR}:.'
+		LD_LIBRARY_PATH_VAR="SHLIB_PATH"
+	    ])
+	    AS_IF([test "$GCC" = yes], [
+		SHLIB_LD='${CC} -shared'
+		LD_SEARCH_FLAGS=${CC_SEARCH_FLAGS}
+	    ], [
+		CFLAGS="$CFLAGS -z"
+	    ])
+
+	    # Users may want PA-RISC 1.1/2.0 portable code - needs HP cc
+	    #CFLAGS="$CFLAGS +DAportable"
+
+	    # Check to enable 64-bit flags for compiler/linker
+	    AS_IF([test "$do64bit" = "yes"], [
+		AS_IF([test "$GCC" = yes], [
+		    case `${CC} -dumpmachine` in
+			hppa64*)
+			    # 64-bit gcc in use.  Fix flags for GNU ld.
+			    do64bit_ok=yes
+			    SHLIB_LD='${CC} -shared'
+			    AS_IF([test $doRpath = yes], [
+				CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'])
+			    LD_SEARCH_FLAGS=${CC_SEARCH_FLAGS}
+			    ;;
+			*)
+			    AC_MSG_WARN([64bit mode not supported with GCC on $system])
+			    ;;
+		    esac
+		], [
+		    do64bit_ok=yes
+		    CFLAGS="$CFLAGS +DD64"
+		    LDFLAGS_ARCH="+DD64"
+		])
+	    ]) ;;
+	HP-UX-*.08.*|HP-UX-*.09.*|HP-UX-*.10.*)
+	    SHLIB_SUFFIX=".sl"
+	    AC_CHECK_LIB(dld, shl_load, tcl_ok=yes, tcl_ok=no)
+	    AS_IF([test "$tcl_ok" = yes], [
+		SHLIB_CFLAGS="+z"
+		SHLIB_LD="ld -b"
+		SHLIB_LD_LIBS=""
+		DL_OBJS="tclLoadShl.o"
+		DL_LIBS="-ldld"
+		LDFLAGS="$LDFLAGS -Wl,-E"
+		CC_SEARCH_FLAGS='-Wl,+s,+b,${LIB_RUNTIME_DIR}:.'
+		LD_SEARCH_FLAGS='+s +b ${LIB_RUNTIME_DIR}:.'
+		LD_LIBRARY_PATH_VAR="SHLIB_PATH"
+	    ]) ;;
+	IRIX-5.*)
+	    SHLIB_CFLAGS=""
+	    SHLIB_LD="ld -shared -rdata_shared"
+	    SHLIB_SUFFIX=".so"
+	    DL_OBJS="tclLoadDl.o"
+	    DL_LIBS=""
+	    AC_LIBOBJ(mkstemp)
+	    AS_IF([test $doRpath = yes], [
+		CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
+		LD_SEARCH_FLAGS='-rpath ${LIB_RUNTIME_DIR}'])
+	    ;;
+	IRIX-6.*)
+	    SHLIB_CFLAGS=""
+	    SHLIB_LD="ld -n32 -shared -rdata_shared"
+	    SHLIB_SUFFIX=".so"
+	    DL_OBJS="tclLoadDl.o"
+	    DL_LIBS=""
+	    AC_LIBOBJ(mkstemp)
+	    AS_IF([test $doRpath = yes], [
+		CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
+		LD_SEARCH_FLAGS='-rpath ${LIB_RUNTIME_DIR}'])
+	    AS_IF([test "$GCC" = yes], [
+		CFLAGS="$CFLAGS -mabi=n32"
+		LDFLAGS="$LDFLAGS -mabi=n32"
+	    ], [
+		case $system in
+		    IRIX-6.3)
+			# Use to build 6.2 compatible binaries on 6.3.
+			CFLAGS="$CFLAGS -n32 -D_OLD_TERMIOS"
+			;;
+		    *)
+			CFLAGS="$CFLAGS -n32"
+			;;
+		esac
+		LDFLAGS="$LDFLAGS -n32"
+	    ])
+	    ;;
+	IRIX64-6.*)
+	    SHLIB_CFLAGS=""
+	    SHLIB_LD="ld -n32 -shared -rdata_shared"
+	    SHLIB_SUFFIX=".so"
+	    DL_OBJS="tclLoadDl.o"
+	    DL_LIBS=""
+	    AC_LIBOBJ(mkstemp)
+	    AS_IF([test $doRpath = yes], [
+		CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
+		LD_SEARCH_FLAGS='-rpath ${LIB_RUNTIME_DIR}'])
+
+	    # Check to enable 64-bit flags for compiler/linker
+
+	    AS_IF([test "$do64bit" = yes], [
+	        AS_IF([test "$GCC" = yes], [
+	            AC_MSG_WARN([64bit mode not supported by gcc])
+	        ], [
+	            do64bit_ok=yes
+	            SHLIB_LD="ld -64 -shared -rdata_shared"
+	            CFLAGS="$CFLAGS -64"
+	            LDFLAGS_ARCH="-64"
+	        ])
+	    ])
+	    ;;
+	Linux*|GNU*|NetBSD-Debian)
+	    SHLIB_CFLAGS="-fPIC"
+	    SHLIB_SUFFIX=".so"
+
+	    CFLAGS_OPTIMIZE="-O2"
+	    # egcs-2.91.66 on Redhat Linux 6.0 generates lots of warnings
+	    # when you inline the string and math operations.  Turn this off to
+	    # get rid of the warnings.
+	    #CFLAGS_OPTIMIZE="${CFLAGS_OPTIMIZE} -D__NO_STRING_INLINES -D__NO_MATH_INLINES"
+
+	    SHLIB_LD='${CC} ${CFLAGS} ${LDFLAGS} -shared'
+	    DL_OBJS="tclLoadDl.o"
+	    DL_LIBS="-ldl"
+	    LDFLAGS="$LDFLAGS -Wl,--export-dynamic"
+	    AS_IF([test $doRpath = yes], [
+		CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'])
+	    LD_SEARCH_FLAGS=${CC_SEARCH_FLAGS}
+	    AS_IF([test "`uname -m`" = "alpha"], [CFLAGS="$CFLAGS -mieee"])
+	    AS_IF([test $do64bit = yes], [
+		AC_CACHE_CHECK([if compiler accepts -m64 flag], tcl_cv_cc_m64, [
+		    hold_cflags=$CFLAGS
+		    CFLAGS="$CFLAGS -m64"
+		    AC_TRY_LINK(,, tcl_cv_cc_m64=yes, tcl_cv_cc_m64=no)
+		    CFLAGS=$hold_cflags])
+		AS_IF([test $tcl_cv_cc_m64 = yes], [
+		    CFLAGS="$CFLAGS -m64"
+		    do64bit_ok=yes
+		])
+	   ])
+
+	    # The combo of gcc + glibc has a bug related to inlining of
+	    # functions like strtod(). The -fno-builtin flag should address
+	    # this problem but it does not work. The -fno-inline flag is kind
+	    # of overkill but it works. Disable inlining only when one of the
+	    # files in compat/*.c is being linked in.
+
+	    AS_IF([test x"${USE_COMPAT}" != x],[CFLAGS="$CFLAGS -fno-inline"])
+	    ;;
+	Lynx*)
+	    SHLIB_CFLAGS="-fPIC"
+	    SHLIB_SUFFIX=".so"
+	    CFLAGS_OPTIMIZE=-02
+	    SHLIB_LD='${CC} -shared'
+	    DL_OBJS="tclLoadDl.o"
+	    DL_LIBS="-mshared -ldl"
+	    LD_FLAGS="-Wl,--export-dynamic"
+	    AS_IF([test $doRpath = yes], [
+		CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
+		LD_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'])
+	    ;;
+	MP-RAS-02*)
+	    SHLIB_CFLAGS="-K PIC"
+	    SHLIB_LD='${CC} -G'
+	    SHLIB_LD_LIBS=""
+	    SHLIB_SUFFIX=".so"
+	    DL_OBJS="tclLoadDl.o"
+	    DL_LIBS="-ldl"
+	    CC_SEARCH_FLAGS=""
+	    LD_SEARCH_FLAGS=""
+	    ;;
+	MP-RAS-*)
+	    SHLIB_CFLAGS="-K PIC"
+	    SHLIB_LD='${CC} -G'
+	    SHLIB_LD_LIBS=""
+	    SHLIB_SUFFIX=".so"
+	    DL_OBJS="tclLoadDl.o"
+	    DL_LIBS="-ldl"
+	    LDFLAGS="$LDFLAGS -Wl,-Bexport"
+	    CC_SEARCH_FLAGS=""
+	    LD_SEARCH_FLAGS=""
+	    ;;
+	OpenBSD-*)
+	    arch=`arch -s`
+	    case "$arch" in
+	    alpha|sparc64)
+		SHLIB_CFLAGS="-fPIC"
+		;;
+	    *)
+		SHLIB_CFLAGS="-fpic"
+		;;
+	    esac
+	    SHLIB_LD='${CC} ${SHLIB_CFLAGS} -shared'
+	    SHLIB_SUFFIX=".so"
+	    DL_OBJS="tclLoadDl.o"
+	    DL_LIBS=""
+	    AS_IF([test $doRpath = yes], [
+		CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'])
+	    LD_SEARCH_FLAGS=${CC_SEARCH_FLAGS}
+	    SHARED_LIB_SUFFIX='${TCL_TRIM_DOTS}.so${SHLIB_VERSION}'
+	    LDFLAGS="-Wl,-export-dynamic"
+	    CFLAGS_OPTIMIZE="-O2"
+	    AS_IF([test "${TCL_THREADS}" = "1"], [
+		# On OpenBSD:	Compile with -pthread
+		#		Don't link with -lpthread
+		LIBS=`echo $LIBS | sed s/-lpthread//`
+		CFLAGS="$CFLAGS -pthread"
+	    ])
+	    # OpenBSD doesn't do version numbers with dots.
+	    UNSHARED_LIB_SUFFIX='${TCL_TRIM_DOTS}.a'
+	    TCL_LIB_VERSIONS_OK=nodots
+	    ;;
+	NetBSD-*)
+	    # NetBSD has ELF and can use 'cc -shared' to build shared libs
+	    SHLIB_CFLAGS="-fPIC"
+	    SHLIB_LD='${CC} ${SHLIB_CFLAGS} -shared'
+	    SHLIB_SUFFIX=".so"
+	    DL_OBJS="tclLoadDl.o"
+	    DL_LIBS=""
+	    LDFLAGS="$LDFLAGS -export-dynamic"
+	    AS_IF([test $doRpath = yes], [
+		CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'])
+	    LD_SEARCH_FLAGS=${CC_SEARCH_FLAGS}
+	    AS_IF([test "${TCL_THREADS}" = "1"], [
+		# The -pthread needs to go in the CFLAGS, not LIBS
+		LIBS=`echo $LIBS | sed s/-pthread//`
+		CFLAGS="$CFLAGS -pthread"
+	    	LDFLAGS="$LDFLAGS -pthread"
+	    ])
+	    ;;
+	DragonFly-*|FreeBSD-*)
+	    # This configuration from FreeBSD Ports.
+	    SHLIB_CFLAGS="-fPIC"
+	    SHLIB_LD="${CC} -shared"
+	    SHLIB_LD_LIBS="${SHLIB_LD_LIBS} -Wl,-soname,\$[@]"
+	    SHLIB_SUFFIX=".so"
+	    DL_OBJS="tclLoadDl.o"
+	    DL_LIBS=""
+	    LDFLAGS=""
+	    AS_IF([test $doRpath = yes], [
+		CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
+		LD_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'])
+	    AS_IF([test "${TCL_THREADS}" = "1"], [
+		# The -pthread needs to go in the LDFLAGS, not LIBS
+		LIBS=`echo $LIBS | sed s/-pthread//`
+		CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
+		LDFLAGS="$LDFLAGS $PTHREAD_LIBS"])
+	    case $system in
+	    FreeBSD-3.*)
+		# Version numbers are dot-stripped by system policy.
+		TCL_TRIM_DOTS=`echo ${VERSION} | tr -d .`
+		UNSHARED_LIB_SUFFIX='${TCL_TRIM_DOTS}.a'
+		SHARED_LIB_SUFFIX='${TCL_TRIM_DOTS}.so'
+		TCL_LIB_VERSIONS_OK=nodots
+		;;
+	    esac
+	    ;;
+	Darwin-*)
+	    CFLAGS_OPTIMIZE="-Os"
+	    SHLIB_CFLAGS="-fno-common"
+	    # To avoid discrepancies between what headers configure sees during
+	    # preprocessing tests and compiling tests, move any -isysroot and
+	    # -mmacosx-version-min flags from CFLAGS to CPPFLAGS:
+	    CPPFLAGS="${CPPFLAGS} `echo " ${CFLAGS}" | \
+		awk 'BEGIN {FS=" +-";ORS=" "}; {for (i=2;i<=NF;i++) \
+		if ([$]i~/^(isysroot|mmacosx-version-min)/) print "-"[$]i}'`"
+	    CFLAGS="`echo " ${CFLAGS}" | \
+		awk 'BEGIN {FS=" +-";ORS=" "}; {for (i=2;i<=NF;i++) \
+		if (!([$]i~/^(isysroot|mmacosx-version-min)/)) print "-"[$]i}'`"
+	    AS_IF([test $do64bit = yes], [
+		case `arch` in
+		    ppc)
+			AC_CACHE_CHECK([if compiler accepts -arch ppc64 flag],
+				tcl_cv_cc_arch_ppc64, [
+			    hold_cflags=$CFLAGS
+			    CFLAGS="$CFLAGS -arch ppc64 -mpowerpc64 -mcpu=G5"
+			    AC_TRY_LINK(,, tcl_cv_cc_arch_ppc64=yes,
+				    tcl_cv_cc_arch_ppc64=no)
+			    CFLAGS=$hold_cflags])
+			AS_IF([test $tcl_cv_cc_arch_ppc64 = yes], [
+			    CFLAGS="$CFLAGS -arch ppc64 -mpowerpc64 -mcpu=G5"
+			    do64bit_ok=yes
+			]);;
+		    i386)
+			AC_CACHE_CHECK([if compiler accepts -arch x86_64 flag],
+				tcl_cv_cc_arch_x86_64, [
+			    hold_cflags=$CFLAGS
+			    CFLAGS="$CFLAGS -arch x86_64"
+			    AC_TRY_LINK(,, tcl_cv_cc_arch_x86_64=yes,
+				    tcl_cv_cc_arch_x86_64=no)
+			    CFLAGS=$hold_cflags])
+			AS_IF([test $tcl_cv_cc_arch_x86_64 = yes], [
+			    CFLAGS="$CFLAGS -arch x86_64"
+			    do64bit_ok=yes
+			]);;
+		    *)
+			AC_MSG_WARN([Don't know how enable 64-bit on architecture `arch`]);;
+		esac
+	    ], [
+		# Check for combined 32-bit and 64-bit fat build
+		AS_IF([echo "$CFLAGS " |grep -E -q -- '-arch (ppc64|x86_64) ' \
+		    && echo "$CFLAGS " |grep -E -q -- '-arch (ppc|i386) '], [
+		    fat_32_64=yes])
+	    ])
+	    SHLIB_LD='${CC} -dynamiclib ${CFLAGS} ${LDFLAGS}'
+	    AC_CACHE_CHECK([if ld accepts -single_module flag], tcl_cv_ld_single_module, [
+		hold_ldflags=$LDFLAGS
+		LDFLAGS="$LDFLAGS -dynamiclib -Wl,-single_module"
+		AC_TRY_LINK(, [int i;], tcl_cv_ld_single_module=yes, tcl_cv_ld_single_module=no)
+		LDFLAGS=$hold_ldflags])
+	    AS_IF([test $tcl_cv_ld_single_module = yes], [
+		SHLIB_LD="${SHLIB_LD} -Wl,-single_module"
+	    ])
+	    SHLIB_SUFFIX=".dylib"
+	    DL_OBJS="tclLoadDyld.o"
+	    DL_LIBS=""
+	    # Don't use -prebind when building for Mac OS X 10.4 or later only:
+	    AS_IF([test "`echo "${MACOSX_DEPLOYMENT_TARGET}" | awk -F '10\\.' '{print int([$]2)}'`" -lt 4 -a \
+		"`echo "${CPPFLAGS}" | awk -F '-mmacosx-version-min=10\\.' '{print int([$]2)}'`" -lt 4], [
+		LDFLAGS="$LDFLAGS -prebind"])
+	    LDFLAGS="$LDFLAGS -headerpad_max_install_names"
+	    AC_CACHE_CHECK([if ld accepts -search_paths_first flag],
+		    tcl_cv_ld_search_paths_first, [
+		hold_ldflags=$LDFLAGS
+		LDFLAGS="$LDFLAGS -Wl,-search_paths_first"
+		AC_TRY_LINK(, [int i;], tcl_cv_ld_search_paths_first=yes,
+			tcl_cv_ld_search_paths_first=no)
+		LDFLAGS=$hold_ldflags])
+	    AS_IF([test $tcl_cv_ld_search_paths_first = yes], [
+		LDFLAGS="$LDFLAGS -Wl,-search_paths_first"
+	    ])
+	    AS_IF([test "$tcl_cv_cc_visibility_hidden" != yes], [
+		AC_DEFINE(MODULE_SCOPE, [__private_extern__],
+		    [Compiler support for module scope symbols])
+	    ])
+	    CC_SEARCH_FLAGS=""
+	    LD_SEARCH_FLAGS=""
+	    LD_LIBRARY_PATH_VAR="DYLD_LIBRARY_PATH"
+	    AC_DEFINE(MAC_OSX_TCL, 1, [Is this a Mac I see before me?])
+	    PLAT_OBJS='${MAC_OSX_OBJS}'
+	    PLAT_SRCS='${MAC_OSX_SRCS}'
+	    AC_MSG_CHECKING([whether to use CoreFoundation])
+	    AC_ARG_ENABLE(corefoundation,
+		AC_HELP_STRING([--enable-corefoundation],
+		    [use CoreFoundation API on MacOSX (default: on)]),
+		[tcl_corefoundation=$enableval], [tcl_corefoundation=yes])
+	    AC_MSG_RESULT([$tcl_corefoundation])
+	    AS_IF([test $tcl_corefoundation = yes], [
+		AC_CACHE_CHECK([for CoreFoundation.framework],
+			tcl_cv_lib_corefoundation, [
+		    hold_libs=$LIBS
+		    AS_IF([test "$fat_32_64" = yes], [
+			for v in CFLAGS CPPFLAGS LDFLAGS; do
+			    # On Tiger there is no 64-bit CF, so remove 64-bit
+			    # archs from CFLAGS et al. while testing for
+			    # presence of CF. 64-bit CF is disabled in
+			    # tclUnixPort.h if necessary.
+			    eval 'hold_'$v'="$'$v'";'$v'="`echo "$'$v' "|sed -e "s/-arch ppc64 / /g" -e "s/-arch x86_64 / /g"`"'
+			done])
+		    LIBS="$LIBS -framework CoreFoundation"
+		    AC_TRY_LINK([#include <CoreFoundation/CoreFoundation.h>],
+			[CFBundleRef b = CFBundleGetMainBundle();],
+			tcl_cv_lib_corefoundation=yes,
+			tcl_cv_lib_corefoundation=no)
+		    AS_IF([test "$fat_32_64" = yes], [
+			for v in CFLAGS CPPFLAGS LDFLAGS; do
+			    eval $v'="$hold_'$v'"'
+		        done])
+		    LIBS=$hold_libs])
+		AS_IF([test $tcl_cv_lib_corefoundation = yes], [
+		    LIBS="$LIBS -framework CoreFoundation"
+		    AC_DEFINE(HAVE_COREFOUNDATION, 1,
+			[Do we have access to Darwin CoreFoundation.framework?])
+		], [tcl_corefoundation=no])
+		AS_IF([test "$fat_32_64" = yes -a $tcl_corefoundation = yes],[
+		    AC_CACHE_CHECK([for 64-bit CoreFoundation],
+			    tcl_cv_lib_corefoundation_64, [
+			for v in CFLAGS CPPFLAGS LDFLAGS; do
+			    eval 'hold_'$v'="$'$v'";'$v'="`echo "$'$v' "|sed -e "s/-arch ppc / /g" -e "s/-arch i386 / /g"`"'
+			done
+			AC_TRY_LINK([#include <CoreFoundation/CoreFoundation.h>],
+			    [CFBundleRef b = CFBundleGetMainBundle();],
+			    tcl_cv_lib_corefoundation_64=yes,
+			    tcl_cv_lib_corefoundation_64=no)
+			for v in CFLAGS CPPFLAGS LDFLAGS; do
+			    eval $v'="$hold_'$v'"'
+			done])
+		    AS_IF([test $tcl_cv_lib_corefoundation_64 = no], [
+			AC_DEFINE(NO_COREFOUNDATION_64, 1,
+			    [Is Darwin CoreFoundation unavailable for 64-bit?])
+                        LDFLAGS="$LDFLAGS -Wl,-no_arch_warnings"
+		    ])
+		])
+	    ])
+	    ;;
+	NEXTSTEP-*)
+	    SHLIB_CFLAGS=""
+	    SHLIB_LD='${CC} -nostdlib -r'
+	    SHLIB_LD_LIBS=""
+	    SHLIB_SUFFIX=".so"
+	    DL_OBJS="tclLoadNext.o"
+	    DL_LIBS=""
+	    CC_SEARCH_FLAGS=""
+	    LD_SEARCH_FLAGS=""
+	    ;;
+	OS/390-*)
+	    SHLIB_LD_LIBS=""
+	    CFLAGS_OPTIMIZE=""		# Optimizer is buggy
+	    AC_DEFINE(_OE_SOCKETS, 1,	# needed in sys/socket.h
+		[Should OS/390 do the right thing with sockets?])
+	    ;;
+	OSF1-1.0|OSF1-1.1|OSF1-1.2)
+	    # OSF/1 1.[012] from OSF, and derivatives, including Paragon OSF/1
+	    SHLIB_CFLAGS=""
+	    # Hack: make package name same as library name
+	    SHLIB_LD='ld -R -export $@:'
+	    SHLIB_LD_LIBS=""
+	    SHLIB_SUFFIX=".so"
+	    DL_OBJS="tclLoadOSF.o"
+	    DL_LIBS=""
+	    CC_SEARCH_FLAGS=""
+	    LD_SEARCH_FLAGS=""
+	    ;;
+	OSF1-1.*)
+	    # OSF/1 1.3 from OSF using ELF, and derivatives, including AD2
+	    SHLIB_CFLAGS="-fPIC"
+	    AS_IF([test "$SHARED_BUILD" = 1], [SHLIB_LD="ld -shared"], [
+	        SHLIB_LD="ld -non_shared"
+	    ])
+	    SHLIB_LD_LIBS=""
+	    SHLIB_SUFFIX=".so"
+	    DL_OBJS="tclLoadDl.o"
+	    DL_LIBS=""
+	    CC_SEARCH_FLAGS=""
+	    LD_SEARCH_FLAGS=""
+	    ;;
+	OSF1-V*)
+	    # Digital OSF/1
+	    SHLIB_CFLAGS=""
+	    AS_IF([test "$SHARED_BUILD" = 1], [
+	        SHLIB_LD='ld -shared -expect_unresolved "*"'
+	    ], [
+	        SHLIB_LD='ld -non_shared -expect_unresolved "*"'
+	    ])
+	    SHLIB_SUFFIX=".so"
+	    DL_OBJS="tclLoadDl.o"
+	    DL_LIBS=""
+	    AS_IF([test $doRpath = yes], [
+		CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
+		LD_SEARCH_FLAGS='-rpath ${LIB_RUNTIME_DIR}'])
+	    AS_IF([test "$GCC" = yes], [CFLAGS="$CFLAGS -mieee"], [
+		CFLAGS="$CFLAGS -DHAVE_TZSET -std1 -ieee"])
+	    # see pthread_intro(3) for pthread support on osf1, k.furukawa
+	    AS_IF([test "${TCL_THREADS}" = 1], [
+		CFLAGS="$CFLAGS -DHAVE_PTHREAD_ATTR_SETSTACKSIZE"
+		CFLAGS="$CFLAGS -DTCL_THREAD_STACK_MIN=PTHREAD_STACK_MIN*64"
+		LIBS=`echo $LIBS | sed s/-lpthreads//`
+		AS_IF([test "$GCC" = yes], [
+		    LIBS="$LIBS -lpthread -lmach -lexc"
+		], [
+		    CFLAGS="$CFLAGS -pthread"
+		    LDFLAGS="$LDFLAGS -pthread"
+		])
+	    ])
+	    ;;
+	QNX-6*)
+	    # QNX RTP
+	    # This may work for all QNX, but it was only reported for v6.
+	    SHLIB_CFLAGS="-fPIC"
+	    SHLIB_LD="ld -Bshareable -x"
+	    SHLIB_LD_LIBS=""
+	    SHLIB_SUFFIX=".so"
+	    DL_OBJS="tclLoadDl.o"
+	    # dlopen is in -lc on QNX
+	    DL_LIBS=""
+	    CC_SEARCH_FLAGS=""
+	    LD_SEARCH_FLAGS=""
+	    ;;
+	SCO_SV-3.2*)
+	    # Note, dlopen is available only on SCO 3.2.5 and greater. However,
+	    # this test works, since "uname -s" was non-standard in 3.2.4 and
+	    # below.
+	    AS_IF([test "$GCC" = yes], [
+	    	SHLIB_CFLAGS="-fPIC -melf"
+	    	LDFLAGS="$LDFLAGS -melf -Wl,-Bexport"
+	    ], [
+	    	SHLIB_CFLAGS="-Kpic -belf"
+	    	LDFLAGS="$LDFLAGS -belf -Wl,-Bexport"
+	    ])
+	    SHLIB_LD="ld -G"
+	    SHLIB_LD_LIBS=""
+	    SHLIB_SUFFIX=".so"
+	    DL_OBJS="tclLoadDl.o"
+	    DL_LIBS=""
+	    CC_SEARCH_FLAGS=""
+	    LD_SEARCH_FLAGS=""
+	    ;;
+	SINIX*5.4*)
+	    SHLIB_CFLAGS="-K PIC"
+	    SHLIB_LD='${CC} -G'
+	    SHLIB_LD_LIBS=""
+	    SHLIB_SUFFIX=".so"
+	    DL_OBJS="tclLoadDl.o"
+	    DL_LIBS="-ldl"
+	    CC_SEARCH_FLAGS=""
+	    LD_SEARCH_FLAGS=""
+	    ;;
+	SunOS-4*)
+	    SHLIB_CFLAGS="-PIC"
+	    SHLIB_LD="ld"
+	    SHLIB_LD_LIBS=""
+	    SHLIB_SUFFIX=".so"
+	    DL_OBJS="tclLoadDl.o"
+	    DL_LIBS="-ldl"
+	    CC_SEARCH_FLAGS='-L${LIB_RUNTIME_DIR}'
+	    LD_SEARCH_FLAGS=${CC_SEARCH_FLAGS}
+
+	    # SunOS can't handle version numbers with dots in them in library
+	    # specs, like -ltcl7.5, so use -ltcl75 instead.  Also, it
+	    # requires an extra version number at the end of .so file names.
+	    # So, the library has to have a name like libtcl75.so.1.0
+
+	    SHARED_LIB_SUFFIX='${TCL_TRIM_DOTS}.so${SHLIB_VERSION}'
+	    UNSHARED_LIB_SUFFIX='${TCL_TRIM_DOTS}.a'
+	    TCL_LIB_VERSIONS_OK=nodots
+	    ;;
+	SunOS-5.[[0-6]])
+	    # Careful to not let 5.10+ fall into this case
+
+	    # Note: If _REENTRANT isn't defined, then Solaris
+	    # won't define thread-safe library routines.
+
+	    AC_DEFINE(_REENTRANT, 1, [Do we want the reentrant OS API?])
+	    AC_DEFINE(_POSIX_PTHREAD_SEMANTICS, 1,
+		[Do we really want to follow the standard? Yes we do!])
+
+	    SHLIB_CFLAGS="-KPIC"
+	    SHLIB_SUFFIX=".so"
+	    DL_OBJS="tclLoadDl.o"
+	    DL_LIBS="-ldl"
+	    AS_IF([test "$GCC" = yes], [
+		SHLIB_LD='${CC} -shared'
+		CC_SEARCH_FLAGS='-Wl,-R,${LIB_RUNTIME_DIR}'
+		LD_SEARCH_FLAGS=${CC_SEARCH_FLAGS}
+	    ], [
+		SHLIB_LD="/usr/ccs/bin/ld -G -z text"
+		CC_SEARCH_FLAGS='-R ${LIB_RUNTIME_DIR}'
+		LD_SEARCH_FLAGS=${CC_SEARCH_FLAGS}
+	    ])
+	    ;;
+	SunOS-5*)
+	    # Note: If _REENTRANT isn't defined, then Solaris
+	    # won't define thread-safe library routines.
+
+	    AC_DEFINE(_REENTRANT, 1, [Do we want the reentrant OS API?])
+	    AC_DEFINE(_POSIX_PTHREAD_SEMANTICS, 1,
+		[Do we really want to follow the standard? Yes we do!])
+
+	    SHLIB_CFLAGS="-KPIC"
+
+	    # Check to enable 64-bit flags for compiler/linker
+	    AS_IF([test "$do64bit" = yes], [
+		arch=`isainfo`
+		AS_IF([test "$arch" = "sparcv9 sparc"], [
+		    AS_IF([test "$GCC" = yes], [
+			AS_IF([test "`${CC} -dumpversion | awk -F. '{print [$]1}'`" -lt 3], [
+			    AC_MSG_WARN([64bit mode not supported with GCC < 3.2 on $system])
+			], [
+			    do64bit_ok=yes
+			    CFLAGS="$CFLAGS -m64 -mcpu=v9"
+			    LDFLAGS="$LDFLAGS -m64 -mcpu=v9"
+			    SHLIB_CFLAGS="-fPIC"
+			])
+		    ], [
+			do64bit_ok=yes
+			AS_IF([test "$do64bitVIS" = yes], [
+			    CFLAGS="$CFLAGS -xarch=v9a"
+			    LDFLAGS_ARCH="-xarch=v9a"
+			], [
+			    CFLAGS="$CFLAGS -xarch=v9"
+			    LDFLAGS_ARCH="-xarch=v9"
+			])
+			# Solaris 64 uses this as well
+			#LD_LIBRARY_PATH_VAR="LD_LIBRARY_PATH_64"
+		    ])
+		], [AS_IF([test "$arch" = "amd64 i386"], [
+		    AS_IF([test "$GCC" = yes], [
+			case $system in
+			    SunOS-5.1[[1-9]]*|SunOS-5.[[2-9]][[0-9]]*)
+				do64bit_ok=yes
+				CFLAGS="$CFLAGS -m64"
+				LDFLAGS="$LDFLAGS -m64";;
+			    *)
+				AC_MSG_WARN([64bit mode not supported with GCC on $system]);;
+			esac
+		    ], [
+			do64bit_ok=yes
+			case $system in
+			    SunOS-5.1[[1-9]]*|SunOS-5.[[2-9]][[0-9]]*)
+				CFLAGS="$CFLAGS -m64"
+				LDFLAGS="$LDFLAGS -m64";;
+			    *)
+				CFLAGS="$CFLAGS -xarch=amd64"
+				LDFLAGS="$LDFLAGS -xarch=amd64";;
+			esac
+		    ])
+		], [AC_MSG_WARN([64bit mode not supported for $arch])])])
+	    ])
+
+	    #--------------------------------------------------------------------
+	    # On Solaris 5.x i386 with the sunpro compiler we need to link
+	    # with sunmath to get floating point rounding control
+	    #--------------------------------------------------------------------
+	    AS_IF([test "$GCC" = yes],[use_sunmath=no],[
+		arch=`isainfo`
+		AC_MSG_CHECKING([whether to use -lsunmath for fp rounding control])
+		AS_IF([test "$arch" = "amd64 i386" -o "$arch" = "i386"], [
+			AC_MSG_RESULT([yes])
+			MATH_LIBS="-lsunmath $MATH_LIBS"
+			AC_CHECK_HEADER(sunmath.h)
+			use_sunmath=yes
+			], [
+			AC_MSG_RESULT([no])
+			use_sunmath=no
+		])
+	    ])
+	    SHLIB_SUFFIX=".so"
+	    DL_OBJS="tclLoadDl.o"
+	    DL_LIBS="-ldl"
+	    AS_IF([test "$GCC" = yes], [
+		SHLIB_LD='${CC} -shared'
+		CC_SEARCH_FLAGS='-Wl,-R,${LIB_RUNTIME_DIR}'
+		LD_SEARCH_FLAGS=${CC_SEARCH_FLAGS}
+		AS_IF([test "$do64bit_ok" = yes], [
+		    AS_IF([test "$arch" = "sparcv9 sparc"], [
+			# We need to specify -static-libgcc or we need to
+			# add the path to the sparv9 libgcc.
+			SHLIB_LD="$SHLIB_LD -m64 -mcpu=v9 -static-libgcc"
+			# for finding sparcv9 libgcc, get the regular libgcc
+			# path, remove so name and append 'sparcv9'
+			#v9gcclibdir="`gcc -print-file-name=libgcc_s.so` | ..."
+			#CC_SEARCH_FLAGS="${CC_SEARCH_FLAGS},-R,$v9gcclibdir"
+		    ], [AS_IF([test "$arch" = "amd64 i386"], [
+			SHLIB_LD="$SHLIB_LD -m64 -static-libgcc"
+		    ])])
+		])
+	    ], [
+		AS_IF([test "$use_sunmath" = yes], [textmode=textoff],[textmode=text])
+		case $system in
+		    SunOS-5.[[1-9]][[0-9]]*|SunOS-5.[[7-9]])
+			SHLIB_LD="\${CC} -G -z $textmode \${LDFLAGS}";;
+		    *)
+			SHLIB_LD="/usr/ccs/bin/ld -G -z $textmode";;
+		esac
+		CC_SEARCH_FLAGS='-Wl,-R,${LIB_RUNTIME_DIR}'
+		LD_SEARCH_FLAGS='-R ${LIB_RUNTIME_DIR}'
+	    ])
+	    ;;
+	UNIX_SV* | UnixWare-5*)
+	    SHLIB_CFLAGS="-KPIC"
+	    SHLIB_LD='${CC} -G'
+	    SHLIB_LD_LIBS=""
+	    SHLIB_SUFFIX=".so"
+	    DL_OBJS="tclLoadDl.o"
+	    DL_LIBS="-ldl"
+	    # Some UNIX_SV* systems (unixware 1.1.2 for example) have linkers
+	    # that don't grok the -Bexport option.  Test that it does.
+	    AC_CACHE_CHECK([for ld accepts -Bexport flag], tcl_cv_ld_Bexport, [
+		hold_ldflags=$LDFLAGS
+		LDFLAGS="$LDFLAGS -Wl,-Bexport"
+		AC_TRY_LINK(, [int i;], tcl_cv_ld_Bexport=yes, tcl_cv_ld_Bexport=no)
+	        LDFLAGS=$hold_ldflags])
+	    AS_IF([test $tcl_cv_ld_Bexport = yes], [
+		LDFLAGS="$LDFLAGS -Wl,-Bexport"
+	    ])
+	    CC_SEARCH_FLAGS=""
+	    LD_SEARCH_FLAGS=""
+	    ;;
+    esac
+
+    AS_IF([test "$do64bit" = yes -a "$do64bit_ok" = no], [
+	AC_MSG_WARN([64bit support being disabled -- don't know magic for this platform])
+    ])
+
+    AS_IF([test "$do64bit" = yes -a "$do64bit_ok" = yes], [
+	AC_DEFINE(TCL_CFG_DO64BIT, 1, [Is this a 64-bit build?])
+    ])
+
+dnl # Add any CPPFLAGS set in the environment to our CFLAGS, but delay doing so
+dnl # until the end of configure, as configure's compile and link tests use
+dnl # both CPPFLAGS and CFLAGS (unlike our compile and link) but configure's
+dnl # preprocessing tests use only CPPFLAGS.
+    AC_CONFIG_COMMANDS_PRE([CFLAGS="${CFLAGS} ${CPPFLAGS}"; CPPFLAGS=""])
+
+    # Step 4: disable dynamic loading if requested via a command-line switch.
+
+    AC_ARG_ENABLE(load,
+	AC_HELP_STRING([--enable-load],
+	    [allow dynamic loading and "load" command (default: on)]),
+	[tcl_ok=$enableval], [tcl_ok=yes])
+    AS_IF([test "$tcl_ok" = no], [DL_OBJS=""])
+
+    AS_IF([test "x$DL_OBJS" != x], [BUILD_DLTEST="\$(DLTEST_TARGETS)"], [
+	AC_MSG_WARN([Can't figure out how to do dynamic loading or shared libraries on this system.])
+	SHLIB_CFLAGS=""
+	SHLIB_LD=""
+	SHLIB_SUFFIX=""
+	DL_OBJS="tclLoadNone.o"
+	DL_LIBS=""
+	LDFLAGS="$LDFLAGS_ORIG"
+	CC_SEARCH_FLAGS=""
+	LD_SEARCH_FLAGS=""
+	BUILD_DLTEST=""
+    ])
+    LDFLAGS="$LDFLAGS $LDFLAGS_ARCH"
+
+    # If we're running gcc, then change the C flags for compiling shared
+    # libraries to the right flags for gcc, instead of those for the
+    # standard manufacturer compiler.
+
+    AS_IF([test "$DL_OBJS" != "tclLoadNone.o" -a "$GCC" = yes], [
+	case $system in
+	    AIX-*) ;;
+	    BSD/OS*) ;;
+	    CYGWIN_*|MINGW32_*) ;;
+	    IRIX*) ;;
+	    NetBSD-*|DragonFly-*|FreeBSD-*|OpenBSD-*) ;;
+	    Darwin-*) ;;
+	    SCO_SV-3.2*) ;;
+	    *) SHLIB_CFLAGS="-fPIC" ;;
+	esac])
+
+    AS_IF([test "$tcl_cv_cc_visibility_hidden" != yes], [
+	AC_DEFINE(MODULE_SCOPE, [extern],
+	    [No Compiler support for module scope symbols])
+    ])
+
+    AS_IF([test "$SHARED_LIB_SUFFIX" = ""], [
+	SHARED_LIB_SUFFIX='${VERSION}${SHLIB_SUFFIX}'])
+    AS_IF([test "$UNSHARED_LIB_SUFFIX" = ""], [
+	UNSHARED_LIB_SUFFIX='${VERSION}.a'])
+    DLL_INSTALL_DIR="\$(LIB_INSTALL_DIR)"
+
+    AS_IF([test "${SHARED_BUILD}" = 1 -a "${SHLIB_SUFFIX}" != ""], [
+        LIB_SUFFIX=${SHARED_LIB_SUFFIX}
+        MAKE_LIB='${SHLIB_LD} -o [$]@ ${OBJS} ${SHLIB_LD_LIBS} ${TCL_SHLIB_LD_EXTRAS} ${TK_SHLIB_LD_EXTRAS} ${LD_SEARCH_FLAGS}'
+        AS_IF([test "${SHLIB_SUFFIX}" = ".dll"], [
+            INSTALL_LIB='$(INSTALL_LIBRARY) $(LIB_FILE) "$(BIN_INSTALL_DIR)/$(LIB_FILE)";if test -f $(LIB_FILE).a; then $(INSTALL_DATA) $(LIB_FILE).a "$(LIB_INSTALL_DIR)"; fi;'
+            DLL_INSTALL_DIR="\$(BIN_INSTALL_DIR)"
+        ], [
+            INSTALL_LIB='$(INSTALL_LIBRARY) $(LIB_FILE) "$(LIB_INSTALL_DIR)/$(LIB_FILE)"'
+        ])
+    ], [
+        LIB_SUFFIX=${UNSHARED_LIB_SUFFIX}
+
+        AS_IF([test "$RANLIB" = ""], [
+            MAKE_LIB='$(STLIB_LD) [$]@ ${OBJS}'
+        ], [
+            MAKE_LIB='${STLIB_LD} [$]@ ${OBJS} ; ${RANLIB} [$]@'
+        ])
+        INSTALL_LIB='$(INSTALL_LIBRARY) $(LIB_FILE) "$(LIB_INSTALL_DIR)/$(LIB_FILE)"'
+    ])
+
+    # Stub lib does not depend on shared/static configuration
+    AS_IF([test "$RANLIB" = ""], [
+        MAKE_STUB_LIB='${STLIB_LD} [$]@ ${STUB_LIB_OBJS}'
+    ], [
+        MAKE_STUB_LIB='${STLIB_LD} [$]@ ${STUB_LIB_OBJS} ; ${RANLIB} [$]@'
+    ])
+    INSTALL_STUB_LIB='$(INSTALL_LIBRARY) $(STUB_LIB_FILE) "$(LIB_INSTALL_DIR)/$(STUB_LIB_FILE)"'
+
+    # Define TCL_LIBS now that we know what DL_LIBS is.
+    # The trick here is that we don't want to change the value of TCL_LIBS if
+    # it is already set when tclConfig.sh had been loaded by Tk.
+    AS_IF([test "x${TCL_LIBS}" = x], [
+        TCL_LIBS="${DL_LIBS} ${LIBS} ${MATH_LIBS}"])
+    AC_SUBST(TCL_LIBS)
+
+	# See if the compiler supports casting to a union type.
+	# This is used to stop gcc from printing a compiler
+	# warning when initializing a union member.
+
+	AC_CACHE_CHECK(for cast to union support,
+	    tcl_cv_cast_to_union,
+	    AC_TRY_COMPILE([],
+	    [
+		  union foo { int i; double d; };
+		  union foo f = (union foo) (int) 0;
+	    ],
+	    tcl_cv_cast_to_union=yes,
+	    tcl_cv_cast_to_union=no)
+	)
+	if test "$tcl_cv_cast_to_union" = "yes"; then
+	    AC_DEFINE(HAVE_CAST_TO_UNION, 1,
+		    [Defined when compiler supports casting to union type.])
+	fi
+
+    # FIXME: This subst was left in only because the TCL_DL_LIBS
+    # entry in tclConfig.sh uses it. It is not clear why someone
+    # would use TCL_DL_LIBS instead of TCL_LIBS.
+    AC_SUBST(DL_LIBS)
+
+    AC_SUBST(DL_OBJS)
+    AC_SUBST(PLAT_OBJS)
+    AC_SUBST(PLAT_SRCS)
+    AC_SUBST(LDAIX_SRC)
+    AC_SUBST(CFLAGS)
+    AC_SUBST(CFLAGS_DEBUG)
+    AC_SUBST(CFLAGS_OPTIMIZE)
+    AC_SUBST(CFLAGS_WARNING)
+
+    AC_SUBST(LDFLAGS)
+    AC_SUBST(LDFLAGS_DEBUG)
+    AC_SUBST(LDFLAGS_OPTIMIZE)
+    AC_SUBST(CC_SEARCH_FLAGS)
+    AC_SUBST(LD_SEARCH_FLAGS)
+
+    AC_SUBST(STLIB_LD)
+    AC_SUBST(SHLIB_LD)
+    AC_SUBST(TCL_SHLIB_LD_EXTRAS)
+    AC_SUBST(TK_SHLIB_LD_EXTRAS)
+    AC_SUBST(SHLIB_LD_LIBS)
+    AC_SUBST(SHLIB_CFLAGS)
+    AC_SUBST(SHLIB_SUFFIX)
+    AC_DEFINE_UNQUOTED(TCL_SHLIB_EXT,"${SHLIB_SUFFIX}",
+	[What is the default extension for shared libraries?])
+
+    AC_SUBST(MAKE_LIB)
+    AC_SUBST(MAKE_STUB_LIB)
+    AC_SUBST(INSTALL_LIB)
+    AC_SUBST(DLL_INSTALL_DIR)
+    AC_SUBST(INSTALL_STUB_LIB)
+    AC_SUBST(RANLIB)
+])
+
+#--------------------------------------------------------------------
+# SC_MISSING_POSIX_HEADERS
+#
+#	Supply substitutes for missing POSIX header files.  Special
+#	notes:
+#	    - stdlib.h doesn't define strtol, strtoul, or
+#	      strtod insome versions of SunOS
+#	    - some versions of string.h don't declare procedures such
+#	      as strstr
+#
+# Arguments:
+#	none
+#
+# Results:
+#
+#	Defines some of the following vars:
+#		NO_DIRENT_H
+#		NO_VALUES_H
+#		NO_STDLIB_H
+#		NO_STRING_H
+#		NO_SYS_WAIT_H
+#		NO_DLFCN_H
+#		HAVE_SYS_PARAM_H
+#
+#		HAVE_STRING_H ?
+#
+#--------------------------------------------------------------------
+
+AC_DEFUN([SC_MISSING_POSIX_HEADERS], [
+    AC_CACHE_CHECK([dirent.h], tcl_cv_dirent_h, [
+    AC_TRY_LINK([#include <sys/types.h>
+#include <dirent.h>], [
+#ifndef _POSIX_SOURCE
+#   ifdef __Lynx__
+	/*
+	 * Generate compilation error to make the test fail:  Lynx headers
+	 * are only valid if really in the POSIX environment.
+	 */
+
+	missing_procedure();
+#   endif
+#endif
+DIR *d;
+struct dirent *entryPtr;
+char *p;
+d = opendir("foobar");
+entryPtr = readdir(d);
+p = entryPtr->d_name;
+closedir(d);
+], tcl_cv_dirent_h=yes, tcl_cv_dirent_h=no)])
+
+    if test $tcl_cv_dirent_h = no; then
+	AC_DEFINE(NO_DIRENT_H, 1, [Do we have <dirent.h>?])
+    fi
+
+    AC_CHECK_HEADER(float.h, , [AC_DEFINE(NO_FLOAT_H, 1, [Do we have <float.h>?])])
+    AC_CHECK_HEADER(values.h, , [AC_DEFINE(NO_VALUES_H, 1, [Do we have <values.h>?])])
+    AC_CHECK_HEADER(stdlib.h, tcl_ok=1, tcl_ok=0)
+    AC_EGREP_HEADER(strtol, stdlib.h, , tcl_ok=0)
+    AC_EGREP_HEADER(strtoul, stdlib.h, , tcl_ok=0)
+    AC_EGREP_HEADER(strtod, stdlib.h, , tcl_ok=0)
+    if test $tcl_ok = 0; then
+	AC_DEFINE(NO_STDLIB_H, 1, [Do we have <stdlib.h>?])
+    fi
+    AC_CHECK_HEADER(string.h, tcl_ok=1, tcl_ok=0)
+    AC_EGREP_HEADER(strstr, string.h, , tcl_ok=0)
+    AC_EGREP_HEADER(strerror, string.h, , tcl_ok=0)
+
+    # See also memmove check below for a place where NO_STRING_H can be
+    # set and why.
+
+    if test $tcl_ok = 0; then
+	AC_DEFINE(NO_STRING_H, 1, [Do we have <string.h>?])
+    fi
+
+    AC_CHECK_HEADER(sys/wait.h, , [AC_DEFINE(NO_SYS_WAIT_H, 1, [Do we have <sys/wait.h>?])])
+    AC_CHECK_HEADER(dlfcn.h, , [AC_DEFINE(NO_DLFCN_H, 1, [Do we have <dlfcn.h>?])])
+
+    # OS/390 lacks sys/param.h (and doesn't need it, by chance).
+    AC_HAVE_HEADERS(sys/param.h)
+])
+
+#--------------------------------------------------------------------
+# SC_PATH_X
+#
+#	Locate the X11 header files and the X11 library archive.  Try
+#	the ac_path_x macro first, but if it doesn't find the X stuff
+#	(e.g. because there's no xmkmf program) then check through
+#	a list of possible directories.  Under some conditions the
+#	autoconf macro will return an include directory that contains
+#	no include files, so double-check its result just to be safe.
+#
+# Arguments:
+#	none
+#
+# Results:
+#
+#	Sets the following vars:
+#		XINCLUDES
+#		XLIBSW
+#
+#--------------------------------------------------------------------
+
+AC_DEFUN([SC_PATH_X], [
+    AC_PATH_X
+    not_really_there=""
+    if test "$no_x" = ""; then
+	if test "$x_includes" = ""; then
+	    AC_TRY_CPP([#include <X11/Xlib.h>], , not_really_there="yes")
+	else
+	    if test ! -r $x_includes/X11/Xlib.h; then
+		not_really_there="yes"
+	    fi
+	fi
+    fi
+    if test "$no_x" = "yes" -o "$not_really_there" = "yes"; then
+	AC_MSG_CHECKING([for X11 header files])
+	found_xincludes="no"
+	AC_TRY_CPP([#include <X11/Xlib.h>], found_xincludes="yes", found_xincludes="no")
+	if test "$found_xincludes" = "no"; then
+	    dirs="/usr/unsupported/include /usr/local/include /usr/X386/include /usr/X11R6/include /usr/X11R5/include /usr/include/X11R5 /usr/include/X11R4 /usr/openwin/include /usr/X11/include /usr/sww/include"
+	    for i in $dirs ; do
+		if test -r $i/X11/Xlib.h; then
+		    AC_MSG_RESULT([$i])
+		    XINCLUDES=" -I$i"
+		    found_xincludes="yes"
+		    break
+		fi
+	    done
+	fi
+    else
+	if test "$x_includes" != ""; then
+	    XINCLUDES="-I$x_includes"
+	    found_xincludes="yes"
+	fi
+    fi
+    if test "$found_xincludes" = "no"; then
+	AC_MSG_RESULT([couldn't find any!])
+    fi
+
+    if test "$no_x" = yes; then
+	AC_MSG_CHECKING([for X11 libraries])
+	XLIBSW=nope
+	dirs="/usr/unsupported/lib /usr/local/lib /usr/X386/lib /usr/X11R6/lib /usr/X11R5/lib /usr/lib/X11R5 /usr/lib/X11R4 /usr/openwin/lib /usr/X11/lib /usr/sww/X11/lib"
+	for i in $dirs ; do
+	    if test -r $i/libX11.a -o -r $i/libX11.so -o -r $i/libX11.sl -o -r $i/libX11.dylib; then
+		AC_MSG_RESULT([$i])
+		XLIBSW="-L$i -lX11"
+		x_libraries="$i"
+		break
+	    fi
+	done
+    else
+	if test "$x_libraries" = ""; then
+	    XLIBSW=-lX11
+	else
+	    XLIBSW="-L$x_libraries -lX11"
+	fi
+    fi
+    if test "$XLIBSW" = nope ; then
+	AC_CHECK_LIB(Xwindow, XCreateWindow, XLIBSW=-lXwindow)
+    fi
+    if test "$XLIBSW" = nope ; then
+	AC_MSG_RESULT([could not find any!  Using -lX11.])
+	XLIBSW=-lX11
+    fi
+])
+
+#--------------------------------------------------------------------
+# SC_BLOCKING_STYLE
+#
+#	The statements below check for systems where POSIX-style
+#	non-blocking I/O (O_NONBLOCK) doesn't work or is unimplemented.
+#	On these systems (mostly older ones), use the old BSD-style
+#	FIONBIO approach instead.
+#
+# Arguments:
+#	none
+#
+# Results:
+#
+#	Defines some of the following vars:
+#		HAVE_SYS_IOCTL_H
+#		HAVE_SYS_FILIO_H
+#		USE_FIONBIO
+#		O_NONBLOCK
+#
+#--------------------------------------------------------------------
+
+AC_DEFUN([SC_BLOCKING_STYLE], [
+    AC_CHECK_HEADERS(sys/ioctl.h)
+    AC_CHECK_HEADERS(sys/filio.h)
+    SC_CONFIG_SYSTEM
+    AC_MSG_CHECKING([FIONBIO vs. O_NONBLOCK for nonblocking I/O])
+    case $system in
+	OSF*)
+	    AC_DEFINE(USE_FIONBIO, 1, [Should we use FIONBIO?])
+	    AC_MSG_RESULT([FIONBIO])
+	    ;;
+	SunOS-4*)
+	    AC_DEFINE(USE_FIONBIO, 1, [Should we use FIONBIO?])
+	    AC_MSG_RESULT([FIONBIO])
+	    ;;
+	*)
+	    AC_MSG_RESULT([O_NONBLOCK])
+	    ;;
+    esac
+])
+
+#--------------------------------------------------------------------
+# SC_TIME_HANLDER
+#
+#	Checks how the system deals with time.h, what time structures
+#	are used on the system, and what fields the structures have.
+#
+# Arguments:
+#	none
+#
+# Results:
+#
+#	Defines some of the following vars:
+#		USE_DELTA_FOR_TZ
+#		HAVE_TM_GMTOFF
+#		HAVE_TM_TZADJ
+#		HAVE_TIMEZONE_VAR
+#
+#--------------------------------------------------------------------
+
+AC_DEFUN([SC_TIME_HANDLER], [
+    AC_CHECK_HEADERS(sys/time.h)
+    AC_HEADER_TIME
+
+    AC_CHECK_FUNCS(gmtime_r localtime_r mktime)
+
+    AC_CACHE_CHECK([tm_tzadj in struct tm], tcl_cv_member_tm_tzadj, [
+	AC_TRY_COMPILE([#include <time.h>], [struct tm tm; tm.tm_tzadj;],
+	    tcl_cv_member_tm_tzadj=yes, tcl_cv_member_tm_tzadj=no)])
+    if test $tcl_cv_member_tm_tzadj = yes ; then
+	AC_DEFINE(HAVE_TM_TZADJ, 1, [Should we use the tm_tzadj field of struct tm?])
+    fi
+
+    AC_CACHE_CHECK([tm_gmtoff in struct tm], tcl_cv_member_tm_gmtoff, [
+	AC_TRY_COMPILE([#include <time.h>], [struct tm tm; tm.tm_gmtoff;],
+	    tcl_cv_member_tm_gmtoff=yes, tcl_cv_member_tm_gmtoff=no)])
+    if test $tcl_cv_member_tm_gmtoff = yes ; then
+	AC_DEFINE(HAVE_TM_GMTOFF, 1, [Should we use the tm_gmtoff field of struct tm?])
+    fi
+
+    #
+    # Its important to include time.h in this check, as some systems
+    # (like convex) have timezone functions, etc.
+    #
+    AC_CACHE_CHECK([long timezone variable], tcl_cv_timezone_long, [
+	AC_TRY_COMPILE([#include <time.h>],
+	    [extern long timezone;
+	    timezone += 1;
+	    exit (0);],
+	    tcl_cv_timezone_long=yes, tcl_cv_timezone_long=no)])
+    if test $tcl_cv_timezone_long = yes ; then
+	AC_DEFINE(HAVE_TIMEZONE_VAR, 1, [Should we use the global timezone variable?])
+    else
+	#
+	# On some systems (eg IRIX 6.2), timezone is a time_t and not a long.
+	#
+	AC_CACHE_CHECK([time_t timezone variable], tcl_cv_timezone_time, [
+	    AC_TRY_COMPILE([#include <time.h>],
+		[extern time_t timezone;
+		timezone += 1;
+		exit (0);],
+		tcl_cv_timezone_time=yes, tcl_cv_timezone_time=no)])
+	if test $tcl_cv_timezone_time = yes ; then
+	    AC_DEFINE(HAVE_TIMEZONE_VAR, 1, [Should we use the global timezone variable?])
+	fi
+    fi
+])
+
+#--------------------------------------------------------------------
+# SC_TCL_LINK_LIBS
+#
+#	Search for the libraries needed to link the Tcl shell.
+#	Things like the math library (-lm) and socket stuff (-lsocket vs.
+#	-lnsl) are dealt with here.
+#
+# Arguments:
+#	None.
+#
+# Results:
+#
+#	Might append to the following vars:
+#		LIBS
+#		MATH_LIBS
+#
+#	Might define the following vars:
+#		HAVE_NET_ERRNO_H
+#
+#--------------------------------------------------------------------
+
+AC_DEFUN([SC_TCL_LINK_LIBS], [
+    #--------------------------------------------------------------------
+    # On a few very rare systems, all of the libm.a stuff is
+    # already in libc.a.  Set compiler flags accordingly.
+    #--------------------------------------------------------------------
+
+    AC_CHECK_FUNC(sin, MATH_LIBS="", MATH_LIBS="-lm")
+
+    #--------------------------------------------------------------------
+    # Interactive UNIX requires -linet instead of -lsocket, plus it
+    # needs net/errno.h to define the socket-related error codes.
+    #--------------------------------------------------------------------
+
+    AC_CHECK_LIB(inet, main, [LIBS="$LIBS -linet"])
+    AC_CHECK_HEADER(net/errno.h, [
+	AC_DEFINE(HAVE_NET_ERRNO_H, 1, [Do we have <net/errno.h>?])])
+
+    #--------------------------------------------------------------------
+    #	Check for the existence of the -lsocket and -lnsl libraries.
+    #	The order here is important, so that they end up in the right
+    #	order in the command line generated by make.  Here are some
+    #	special considerations:
+    #	1. Use "connect" and "accept" to check for -lsocket, and
+    #	   "gethostbyname" to check for -lnsl.
+    #	2. Use each function name only once:  can't redo a check because
+    #	   autoconf caches the results of the last check and won't redo it.
+    #	3. Use -lnsl and -lsocket only if they supply procedures that
+    #	   aren't already present in the normal libraries.  This is because
+    #	   IRIX 5.2 has libraries, but they aren't needed and they're
+    #	   bogus:  they goof up name resolution if used.
+    #	4. On some SVR4 systems, can't use -lsocket without -lnsl too.
+    #	   To get around this problem, check for both libraries together
+    #	   if -lsocket doesn't work by itself.
+    #--------------------------------------------------------------------
+
+    tcl_checkBoth=0
+    AC_CHECK_FUNC(connect, tcl_checkSocket=0, tcl_checkSocket=1)
+    if test "$tcl_checkSocket" = 1; then
+	AC_CHECK_FUNC(setsockopt, , [AC_CHECK_LIB(socket, setsockopt,
+	    LIBS="$LIBS -lsocket", tcl_checkBoth=1)])
+    fi
+    if test "$tcl_checkBoth" = 1; then
+	tk_oldLibs=$LIBS
+	LIBS="$LIBS -lsocket -lnsl"
+	AC_CHECK_FUNC(accept, tcl_checkNsl=0, [LIBS=$tk_oldLibs])
+    fi
+    AC_CHECK_FUNC(gethostbyname, , [AC_CHECK_LIB(nsl, gethostbyname,
+	    [LIBS="$LIBS -lnsl"])])
+])
+
+#--------------------------------------------------------------------
+# SC_TCL_EARLY_FLAGS
+#
+#	Check for what flags are needed to be passed so the correct OS
+#	features are available.
+#
+# Arguments:
+#	None
+#
+# Results:
+#
+#	Might define the following vars:
+#		_ISOC99_SOURCE
+#		_LARGEFILE64_SOURCE
+#		_LARGEFILE_SOURCE64
+#
+#--------------------------------------------------------------------
+
+AC_DEFUN([SC_TCL_EARLY_FLAG],[
+    AC_CACHE_VAL([tcl_cv_flag_]translit($1,[A-Z],[a-z]),
+	AC_TRY_COMPILE([$2], $3, [tcl_cv_flag_]translit($1,[A-Z],[a-z])=no,
+	    AC_TRY_COMPILE([[#define ]$1[ 1
+]$2], $3,
+		[tcl_cv_flag_]translit($1,[A-Z],[a-z])=yes,
+		[tcl_cv_flag_]translit($1,[A-Z],[a-z])=no)))
+    if test ["x${tcl_cv_flag_]translit($1,[A-Z],[a-z])[}" = "xyes"] ; then
+	AC_DEFINE($1, 1, [Add the ]$1[ flag when building])
+	tcl_flags="$tcl_flags $1"
+    fi
+])
+
+AC_DEFUN([SC_TCL_EARLY_FLAGS],[
+    AC_MSG_CHECKING([for required early compiler flags])
+    tcl_flags=""
+    SC_TCL_EARLY_FLAG(_ISOC99_SOURCE,[#include <stdlib.h>],
+	[char *p = (char *)strtoll; char *q = (char *)strtoull;])
+    SC_TCL_EARLY_FLAG(_LARGEFILE64_SOURCE,[#include <sys/stat.h>],
+	[struct stat64 buf; int i = stat64("/", &buf);])
+    SC_TCL_EARLY_FLAG(_LARGEFILE_SOURCE64,[#include <sys/stat.h>],
+	[char *p = (char *)open64;])
+    if test "x${tcl_flags}" = "x" ; then
+	AC_MSG_RESULT([none])
+    else
+	AC_MSG_RESULT([${tcl_flags}])
+    fi
+])
+
+#--------------------------------------------------------------------
+# SC_TCL_64BIT_FLAGS
+#
+#	Check for what is defined in the way of 64-bit features.
+#
+# Arguments:
+#	None
+#
+# Results:
+#
+#	Might define the following vars:
+#		TCL_WIDE_INT_IS_LONG
+#		TCL_WIDE_INT_TYPE
+#		HAVE_STRUCT_DIRENT64, HAVE_DIR64
+#		HAVE_STRUCT_STAT64
+#		HAVE_TYPE_OFF64_T
+#
+#--------------------------------------------------------------------
+
+AC_DEFUN([SC_TCL_64BIT_FLAGS], [
+    AC_MSG_CHECKING([for 64-bit integer type])
+    AC_CACHE_VAL(tcl_cv_type_64bit,[
+	tcl_cv_type_64bit=none
+	# See if the compiler knows natively about __int64
+	AC_TRY_COMPILE(,[__int64 value = (__int64) 0;],
+	    tcl_type_64bit=__int64, tcl_type_64bit="long long")
+	# See if we should use long anyway  Note that we substitute in the
+	# type that is our current guess for a 64-bit type inside this check
+	# program, so it should be modified only carefully...
+        AC_TRY_COMPILE(,[switch (0) {
+            case 1: case (sizeof(]${tcl_type_64bit}[)==sizeof(long)): ;
+        }],tcl_cv_type_64bit=${tcl_type_64bit})])
+    if test "${tcl_cv_type_64bit}" = none ; then
+	AC_DEFINE(TCL_WIDE_INT_IS_LONG, 1, [Are wide integers to be implemented with C 'long's?])
+	AC_MSG_RESULT([using long])
+    else
+	AC_DEFINE_UNQUOTED(TCL_WIDE_INT_TYPE,${tcl_cv_type_64bit},
+	    [What type should be used to define wide integers?])
+	AC_MSG_RESULT([${tcl_cv_type_64bit}])
+
+	# Now check for auxiliary declarations
+	AC_CACHE_CHECK([for struct dirent64], tcl_cv_struct_dirent64,[
+	    AC_TRY_COMPILE([#include <sys/types.h>
+#include <dirent.h>],[struct dirent64 p;],
+		tcl_cv_struct_dirent64=yes,tcl_cv_struct_dirent64=no)])
+	if test "x${tcl_cv_struct_dirent64}" = "xyes" ; then
+	    AC_DEFINE(HAVE_STRUCT_DIRENT64, 1, [Is 'struct dirent64' in <sys/types.h>?])
+	fi
+
+	AC_CACHE_CHECK([for DIR64], tcl_cv_DIR64,[
+	    AC_TRY_COMPILE([#include <sys/types.h>
+#include <dirent.h>],[struct dirent64 *p; DIR64 d = opendir64(".");
+            p = readdir64(d); rewinddir64(d); closedir64(d);],
+		tcl_cv_DIR64=yes,tcl_cv_DIR64=no)])
+	if test "x${tcl_cv_DIR64}" = "xyes" ; then
+	    AC_DEFINE(HAVE_DIR64, 1, [Is 'DIR64' in <sys/types.h>?])
+	fi
+
+	AC_CACHE_CHECK([for struct stat64], tcl_cv_struct_stat64,[
+	    AC_TRY_COMPILE([#include <sys/stat.h>],[struct stat64 p;
+],
+		tcl_cv_struct_stat64=yes,tcl_cv_struct_stat64=no)])
+	if test "x${tcl_cv_struct_stat64}" = "xyes" ; then
+	    AC_DEFINE(HAVE_STRUCT_STAT64, 1, [Is 'struct stat64' in <sys/stat.h>?])
+	fi
+
+	AC_CHECK_FUNCS(open64 lseek64)
+	AC_MSG_CHECKING([for off64_t])
+	AC_CACHE_VAL(tcl_cv_type_off64_t,[
+	    AC_TRY_COMPILE([#include <sys/types.h>],[off64_t offset;
+],
+		tcl_cv_type_off64_t=yes,tcl_cv_type_off64_t=no)])
+	dnl Define HAVE_TYPE_OFF64_T only when the off64_t type and the
+	dnl functions lseek64 and open64 are defined.
+	if test "x${tcl_cv_type_off64_t}" = "xyes" && \
+	        test "x${ac_cv_func_lseek64}" = "xyes" && \
+	        test "x${ac_cv_func_open64}" = "xyes" ; then
+	    AC_DEFINE(HAVE_TYPE_OFF64_T, 1, [Is off64_t in <sys/types.h>?])
+	    AC_MSG_RESULT([yes])
+	else
+	    AC_MSG_RESULT([no])
+	fi
+    fi
+])
+
+#--------------------------------------------------------------------
+# SC_TCL_CFG_ENCODING	TIP #59
+#
+#	Declare the encoding to use for embedded configuration information.
+#
+# Arguments:
+#	None.
+#
+# Results:
+#	Might append to the following vars:
+#		DEFS	(implicit)
+#
+#	Will define the following vars:
+#		TCL_CFGVAL_ENCODING
+#
+#--------------------------------------------------------------------
+
+AC_DEFUN([SC_TCL_CFG_ENCODING], [
+    AC_ARG_WITH(encoding,
+	AC_HELP_STRING([--with-encoding],
+	    [encoding for configuration values (default: iso8859-1)]),
+	with_tcencoding=${withval})
+
+    if test x"${with_tcencoding}" != x ; then
+	AC_DEFINE_UNQUOTED(TCL_CFGVAL_ENCODING,"${with_tcencoding}",
+	    [What encoding should be used for embedded configuration info?])
+    else
+	AC_DEFINE(TCL_CFGVAL_ENCODING,"iso8859-1",
+	    [What encoding should be used for embedded configuration info?])
+    fi
+])
+
+#--------------------------------------------------------------------
+# SC_TCL_CHECK_BROKEN_FUNC
+#
+#	Check for broken function.
+#
+# Arguments:
+#	funcName - function to test for
+#	advancedTest - the advanced test to run if the function is present
+#
+# Results:
+#	Might cause compatibility versions of the function to be used.
+#	Might affect the following vars:
+#		USE_COMPAT	(implicit)
+#
+#--------------------------------------------------------------------
+
+AC_DEFUN([SC_TCL_CHECK_BROKEN_FUNC],[
+    AC_CHECK_FUNC($1, tcl_ok=1, tcl_ok=0)
+    if test ["$tcl_ok"] = 1; then
+	AC_CACHE_CHECK([proper ]$1[ implementation], [tcl_cv_]$1[_unbroken],
+	    AC_TRY_RUN([[int main() {]$2[}]],[tcl_cv_]$1[_unbroken]=ok,
+		[tcl_cv_]$1[_unbroken]=broken,[tcl_cv_]$1[_unbroken]=unknown))
+	if test ["$tcl_cv_]$1[_unbroken"] = "ok"; then
+	    tcl_ok=1
+	else
+	    tcl_ok=0
+	fi
+    fi
+    if test ["$tcl_ok"] = 0; then
+	AC_LIBOBJ($1)
+	USE_COMPAT=1
+    fi
+])
+
+#--------------------------------------------------------------------
+# SC_TCL_GETHOSTBYADDR_R
+#
+#	Check if we have MT-safe variant of gethostbyaddr().
+#
+# Arguments:
+#	None
+#
+# Results:
+#
+#	Might define the following vars:
+#		HAVE_GETHOSTBYADDR_R
+#		HAVE_GETHOSTBYADDR_R_7
+#		HAVE_GETHOSTBYADDR_R_8
+#
+#--------------------------------------------------------------------
+
+AC_DEFUN([SC_TCL_GETHOSTBYADDR_R], [AC_CHECK_FUNC(gethostbyaddr_r, [
+    AC_CACHE_CHECK([for gethostbyaddr_r with 7 args], tcl_cv_api_gethostbyaddr_r_7, [
+    AC_TRY_COMPILE([
+	#include <netdb.h>
+    ], [
+	char *addr;
+	int length;
+	int type;
+	struct hostent *result;
+	char buffer[2048];
+	int buflen = 2048;
+	int h_errnop;
+
+	(void) gethostbyaddr_r(addr, length, type, result, buffer, buflen,
+			       &h_errnop);
+    ], tcl_cv_api_gethostbyaddr_r_7=yes, tcl_cv_api_gethostbyaddr_r_7=no)])
+    tcl_ok=$tcl_cv_api_gethostbyaddr_r_7
+    if test "$tcl_ok" = yes; then
+	AC_DEFINE(HAVE_GETHOSTBYADDR_R_7, 1,
+	    [Define to 1 if gethostbyaddr_r takes 7 args.])
+    else
+	AC_CACHE_CHECK([for gethostbyaddr_r with 8 args], tcl_cv_api_gethostbyaddr_r_8, [
+	AC_TRY_COMPILE([
+	    #include <netdb.h>
+	], [
+	    char *addr;
+	    int length;
+	    int type;
+	    struct hostent *result, *resultp;
+	    char buffer[2048];
+	    int buflen = 2048;
+	    int h_errnop;
+
+	    (void) gethostbyaddr_r(addr, length, type, result, buffer, buflen,
+				   &resultp, &h_errnop);
+	], tcl_cv_api_gethostbyaddr_r_8=yes, tcl_cv_api_gethostbyaddr_r_8=no)])
+	tcl_ok=$tcl_cv_api_gethostbyaddr_r_8
+	if test "$tcl_ok" = yes; then
+	    AC_DEFINE(HAVE_GETHOSTBYADDR_R_8, 1,
+		[Define to 1 if gethostbyaddr_r takes 8 args.])
+	fi
+    fi
+    if test "$tcl_ok" = yes; then
+	AC_DEFINE(HAVE_GETHOSTBYADDR_R, 1,
+	    [Define to 1 if gethostbyaddr_r is available.])
+    fi
+])])
+
+#--------------------------------------------------------------------
+# SC_TCL_GETHOSTBYNAME_R
+#
+#	Check to see what variant of gethostbyname_r() we have.
+#	Based on David Arnold's example from the comp.programming.threads
+#	FAQ Q213
+#
+# Arguments:
+#	None
+#
+# Results:
+#
+#	Might define the following vars:
+#		HAVE_GETHOSTBYADDR_R
+#		HAVE_GETHOSTBYADDR_R_3
+#		HAVE_GETHOSTBYADDR_R_5
+#		HAVE_GETHOSTBYADDR_R_6
+#
+#--------------------------------------------------------------------
+
+AC_DEFUN([SC_TCL_GETHOSTBYNAME_R], [AC_CHECK_FUNC(gethostbyname_r, [
+    AC_CACHE_CHECK([for gethostbyname_r with 6 args], tcl_cv_api_gethostbyname_r_6, [
+    AC_TRY_COMPILE([
+	#include <netdb.h>
+    ], [
+	char *name;
+	struct hostent *he, *res;
+	char buffer[2048];
+	int buflen = 2048;
+	int h_errnop;
+
+	(void) gethostbyname_r(name, he, buffer, buflen, &res, &h_errnop);
+    ], tcl_cv_api_gethostbyname_r_6=yes, tcl_cv_api_gethostbyname_r_6=no)])
+    tcl_ok=$tcl_cv_api_gethostbyname_r_6
+    if test "$tcl_ok" = yes; then
+	AC_DEFINE(HAVE_GETHOSTBYNAME_R_6, 1,
+	    [Define to 1 if gethostbyname_r takes 6 args.])
+    else
+	AC_CACHE_CHECK([for gethostbyname_r with 5 args], tcl_cv_api_gethostbyname_r_5, [
+	AC_TRY_COMPILE([
+	    #include <netdb.h>
+	], [
+	    char *name;
+	    struct hostent *he;
+	    char buffer[2048];
+	    int buflen = 2048;
+	    int h_errnop;
+
+	    (void) gethostbyname_r(name, he, buffer, buflen, &h_errnop);
+	], tcl_cv_api_gethostbyname_r_5=yes, tcl_cv_api_gethostbyname_r_5=no)])
+	tcl_ok=$tcl_cv_api_gethostbyname_r_5
+	if test "$tcl_ok" = yes; then
+	    AC_DEFINE(HAVE_GETHOSTBYNAME_R_5, 1,
+		[Define to 1 if gethostbyname_r takes 5 args.])
+	else
+	    AC_CACHE_CHECK([for gethostbyname_r with 3 args], tcl_cv_api_gethostbyname_r_3, [
+	    AC_TRY_COMPILE([
+		#include <netdb.h>
+	    ], [
+		char *name;
+		struct hostent *he;
+		struct hostent_data data;
+
+		(void) gethostbyname_r(name, he, &data);
+	    ], tcl_cv_api_gethostbyname_r_3=yes, tcl_cv_api_gethostbyname_r_3=no)])
+	    tcl_ok=$tcl_cv_api_gethostbyname_r_3
+	    if test "$tcl_ok" = yes; then
+		AC_DEFINE(HAVE_GETHOSTBYNAME_R_3, 1,
+		    [Define to 1 if gethostbyname_r takes 3 args.])
+	    fi
+	fi
+    fi
+    if test "$tcl_ok" = yes; then
+	AC_DEFINE(HAVE_GETHOSTBYNAME_R, 1,
+	    [Define to 1 if gethostbyname_r is available.])
+    fi
+])])
+
+#--------------------------------------------------------------------
+# SC_TCL_GETPWUID_R
+#
+#	Check if we have MT-safe variant of getpwuid() and if yes,
+#	which one exactly.
+#
+# Arguments:
+#	None
+#
+# Results:
+#
+#	Might define the following vars:
+#		HAVE_GETPWUID_R
+#		HAVE_GETPWUID_R_4
+#		HAVE_GETPWUID_R_5
+#
+#--------------------------------------------------------------------
+
+AC_DEFUN([SC_TCL_GETPWUID_R], [AC_CHECK_FUNC(getpwuid_r, [
+    AC_CACHE_CHECK([for getpwuid_r with 5 args], tcl_cv_api_getpwuid_r_5, [
+    AC_TRY_COMPILE([
+	#include <sys/types.h>
+	#include <pwd.h>
+    ], [
+	uid_t uid;
+	struct passwd pw, *pwp;
+	char buf[512];
+	int buflen = 512;
+
+	(void) getpwuid_r(uid, &pw, buf, buflen, &pwp);
+    ], tcl_cv_api_getpwuid_r_5=yes, tcl_cv_api_getpwuid_r_5=no)])
+    tcl_ok=$tcl_cv_api_getpwuid_r_5
+    if test "$tcl_ok" = yes; then
+	AC_DEFINE(HAVE_GETPWUID_R_5, 1,
+	    [Define to 1 if getpwuid_r takes 5 args.])
+    else
+	AC_CACHE_CHECK([for getpwuid_r with 4 args], tcl_cv_api_getpwuid_r_4, [
+	AC_TRY_COMPILE([
+	    #include <sys/types.h>
+	    #include <pwd.h>
+	], [
+	    uid_t uid;
+	    struct passwd pw;
+	    char buf[512];
+	    int buflen = 512;
+
+	    (void)getpwnam_r(uid, &pw, buf, buflen);
+	], tcl_cv_api_getpwuid_r_4=yes, tcl_cv_api_getpwuid_r_4=no)])
+	tcl_ok=$tcl_cv_api_getpwuid_r_4
+	if test "$tcl_ok" = yes; then
+	    AC_DEFINE(HAVE_GETPWUID_R_4, 1,
+		[Define to 1 if getpwuid_r takes 4 args.])
+	fi
+    fi
+    if test "$tcl_ok" = yes; then
+	AC_DEFINE(HAVE_GETPWUID_R, 1,
+	    [Define to 1 if getpwuid_r is available.])
+    fi
+])])
+
+#--------------------------------------------------------------------
+# SC_TCL_GETPWNAM_R
+#
+#	Check if we have MT-safe variant of getpwnam() and if yes,
+#	which one exactly.
+#
+# Arguments:
+#	None
+#
+# Results:
+#
+#	Might define the following vars:
+#		HAVE_GETPWNAM_R
+#		HAVE_GETPWNAM_R_4
+#		HAVE_GETPWNAM_R_5
+#
+#--------------------------------------------------------------------
+
+AC_DEFUN([SC_TCL_GETPWNAM_R], [AC_CHECK_FUNC(getpwnam_r, [
+    AC_CACHE_CHECK([for getpwnam_r with 5 args], tcl_cv_api_getpwnam_r_5, [
+    AC_TRY_COMPILE([
+	#include <sys/types.h>
+	#include <pwd.h>
+    ], [
+	char *name;
+	struct passwd pw, *pwp;
+	char buf[512];
+	int buflen = 512;
+
+	(void) getpwnam_r(name, &pw, buf, buflen, &pwp);
+    ], tcl_cv_api_getpwnam_r_5=yes, tcl_cv_api_getpwnam_r_5=no)])
+    tcl_ok=$tcl_cv_api_getpwnam_r_5
+    if test "$tcl_ok" = yes; then
+	AC_DEFINE(HAVE_GETPWNAM_R_5, 1,
+	    [Define to 1 if getpwnam_r takes 5 args.])
+    else
+	AC_CACHE_CHECK([for getpwnam_r with 4 args], tcl_cv_api_getpwnam_r_4, [
+	AC_TRY_COMPILE([
+	    #include <sys/types.h>
+	    #include <pwd.h>
+	], [
+	    char *name;
+	    struct passwd pw;
+	    char buf[512];
+	    int buflen = 512;
+
+	    (void)getpwnam_r(name, &pw, buf, buflen);
+	], tcl_cv_api_getpwnam_r_4=yes, tcl_cv_api_getpwnam_r_4=no)])
+	tcl_ok=$tcl_cv_api_getpwnam_r_4
+	if test "$tcl_ok" = yes; then
+	    AC_DEFINE(HAVE_GETPWNAM_R_4, 1,
+		[Define to 1 if getpwnam_r takes 4 args.])
+	fi
+    fi
+    if test "$tcl_ok" = yes; then
+	AC_DEFINE(HAVE_GETPWNAM_R, 1,
+	    [Define to 1 if getpwnam_r is available.])
+    fi
+])])
+
+#--------------------------------------------------------------------
+# SC_TCL_GETGRGID_R
+#
+#	Check if we have MT-safe variant of getgrgid() and if yes,
+#	which one exactly.
+#
+# Arguments:
+#	None
+#
+# Results:
+#
+#	Might define the following vars:
+#		HAVE_GETGRGID_R
+#		HAVE_GETGRGID_R_4
+#		HAVE_GETGRGID_R_5
+#
+#--------------------------------------------------------------------
+
+AC_DEFUN([SC_TCL_GETGRGID_R], [AC_CHECK_FUNC(getgrgid_r, [
+    AC_CACHE_CHECK([for getgrgid_r with 5 args], tcl_cv_api_getgrgid_r_5, [
+    AC_TRY_COMPILE([
+	#include <sys/types.h>
+	#include <grp.h>
+    ], [
+	gid_t gid;
+	struct group gr, *grp;
+	char buf[512];
+	int buflen = 512;
+
+	(void) getgrgid_r(gid, &gr, buf, buflen, &grp);
+    ], tcl_cv_api_getgrgid_r_5=yes, tcl_cv_api_getgrgid_r_5=no)])
+    tcl_ok=$tcl_cv_api_getgrgid_r_5
+    if test "$tcl_ok" = yes; then
+	AC_DEFINE(HAVE_GETGRGID_R_5, 1,
+	    [Define to 1 if getgrgid_r takes 5 args.])
+    else
+	AC_CACHE_CHECK([for getgrgid_r with 4 args], tcl_cv_api_getgrgid_r_4, [
+	AC_TRY_COMPILE([
+	    #include <sys/types.h>
+	    #include <grp.h>
+	], [
+	    gid_t gid;
+	    struct group gr;
+	    char buf[512];
+	    int buflen = 512;
+
+	    (void)getgrgid_r(gid, &gr, buf, buflen);
+	], tcl_cv_api_getgrgid_r_4=yes, tcl_cv_api_getgrgid_r_4=no)])
+	tcl_ok=$tcl_cv_api_getgrgid_r_4
+	if test "$tcl_ok" = yes; then
+	    AC_DEFINE(HAVE_GETGRGID_R_4, 1,
+		[Define to 1 if getgrgid_r takes 4 args.])
+	fi
+    fi
+    if test "$tcl_ok" = yes; then
+	AC_DEFINE(HAVE_GETGRGID_R, 1,
+	    [Define to 1 if getgrgid_r is available.])
+    fi
+])])
+
+#--------------------------------------------------------------------
+# SC_TCL_GETGRNAM_R
+#
+#	Check if we have MT-safe variant of getgrnam() and if yes,
+#	which one exactly.
+#
+# Arguments:
+#	None
+#
+# Results:
+#
+#	Might define the following vars:
+#		HAVE_GETGRNAM_R
+#		HAVE_GETGRNAM_R_4
+#		HAVE_GETGRNAM_R_5
+#
+#--------------------------------------------------------------------
+
+AC_DEFUN([SC_TCL_GETGRNAM_R], [AC_CHECK_FUNC(getgrnam_r, [
+    AC_CACHE_CHECK([for getgrnam_r with 5 args], tcl_cv_api_getgrnam_r_5, [
+    AC_TRY_COMPILE([
+	#include <sys/types.h>
+	#include <grp.h>
+    ], [
+	char *name;
+	struct group gr, *grp;
+	char buf[512];
+	int buflen = 512;
+
+	(void) getgrnam_r(name, &gr, buf, buflen, &grp);
+    ], tcl_cv_api_getgrnam_r_5=yes, tcl_cv_api_getgrnam_r_5=no)])
+    tcl_ok=$tcl_cv_api_getgrnam_r_5
+    if test "$tcl_ok" = yes; then
+	AC_DEFINE(HAVE_GETGRNAM_R_5, 1,
+	    [Define to 1 if getgrnam_r takes 5 args.])
+    else
+	AC_CACHE_CHECK([for getgrnam_r with 4 args], tcl_cv_api_getgrnam_r_4, [
+	AC_TRY_COMPILE([
+	    #include <sys/types.h>
+	    #include <grp.h>
+	], [
+	    char *name;
+	    struct group gr;
+	    char buf[512];
+	    int buflen = 512;
+
+	    (void)getgrnam_r(name, &gr, buf, buflen);
+	], tcl_cv_api_getgrnam_r_4=yes, tcl_cv_api_getgrnam_r_4=no)])
+	tcl_ok=$tcl_cv_api_getgrnam_r_4
+	if test "$tcl_ok" = yes; then
+	    AC_DEFINE(HAVE_GETGRNAM_R_4, 1,
+		[Define to 1 if getgrnam_r takes 4 args.])
+	fi
+    fi
+    if test "$tcl_ok" = yes; then
+	AC_DEFINE(HAVE_GETGRNAM_R, 1,
+	    [Define to 1 if getgrnam_r is available.])
+    fi
+])])
+
+AC_DEFUN([SC_TCL_IPV6],[
+	NEED_FAKE_RFC2553=0
+	AC_CHECK_FUNCS(getnameinfo getaddrinfo freeaddrinfo gai_strerror,,[NEED_FAKE_RFC2553=1])
+	AC_CHECK_TYPES([
+		struct addrinfo,
+		struct in6_addr,
+		struct sockaddr_in6,
+		struct sockaddr_storage],,[NEED_FAKE_RFC2553=1],[[
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <netdb.h>
+]])
+if test "x$NEED_FAKE_RFC2553" = "x1"; then
+   AC_DEFINE([NEED_FAKE_RFC2553], 1,
+        [Use compat implementation of getaddrinfo() and friends])
+   AC_LIBOBJ([fake-rfc2553])
+   AC_CHECK_FUNC(strlcpy)
+fi
+])
+# Local Variables:
+# mode: autoconf
+# End:
diff --git a/tcl8.6/unix/tcl.pc.in b/tcl8.6/unix/tcl.pc.in
new file mode 100644
index 0000000..846cb11
--- /dev/null
+++ b/tcl8.6/unix/tcl.pc.in
@@ -0,0 +1,15 @@
+# tcl pkg-config source file
+
+prefix=@prefix@
+exec_prefix=@exec_prefix@
+libdir=@libdir@
+includedir=@includedir@
+
+Name: Tool Command Language
+Description: Tcl is a powerful, easy-to-learn dynamic programming language, suitable for a wide range of uses.
+URL: http://www.tcl.tk/
+Version: @TCL_VERSION@@TCL_PATCH_LEVEL@
+Requires.private: zlib >= 1.2.3
+Libs: -L${libdir} @TCL_LIB_FLAG@ @TCL_STUB_LIB_FLAG@
+Libs.private: @TCL_LIBS@
+Cflags: -I${includedir}
diff --git a/tcl8.6/unix/tcl.spec b/tcl8.6/unix/tcl.spec
new file mode 100644
index 0000000..cc36790
--- /dev/null
+++ b/tcl8.6/unix/tcl.spec
@@ -0,0 +1,52 @@
+# This file is the basis for a binary Tcl RPM for Linux.
+
+%{!?directory:%define directory /usr/local}
+
+Name:          tcl
+Summary:       Tcl scripting language development environment
+Version:       8.6.9
+Release:       2
+License:       BSD
+Group:         Development/Languages
+Source:        http://prdownloads.sourceforge.net/tcl/tcl%{version}-src.tar.gz
+URL:           http://www.tcl.tk/
+Buildroot:     /var/tmp/%{name}%{version}
+
+%description
+The Tcl (Tool Command Language) provides a powerful platform for
+creating integration applications that tie together diverse
+applications, protocols, devices, and frameworks.  When paired with
+the Tk toolkit, Tcl provides the fastest and most powerful way to
+create GUI applications that run on PCs, Unix, and Mac OS X.  Tcl
+can also be used for a variety of web-related tasks and for creating
+powerful command languages for applications.
+
+%prep
+%setup -q -n %{name}%{version}
+
+%build
+cd unix
+CFLAGS="%optflags" ./configure \
+	--prefix=%{directory} \
+	--exec-prefix=%{directory} \
+	--libdir=%{directory}/%{_lib}
+make
+
+%install
+cd unix
+make INSTALL_ROOT=%{buildroot} install
+
+%clean
+rm -rf %buildroot
+
+%files
+%defattr(-,root,root)
+%if %{_lib} != lib
+%{directory}/%{_lib}
+%endif
+%{directory}/lib
+%{directory}/bin
+%{directory}/include
+%{directory}/man/man1
+%{directory}/man/man3
+%{directory}/man/mann
diff --git a/tcl8.6/unix/tclAppInit.c b/tcl8.6/unix/tclAppInit.c
new file mode 100644
index 0000000..9bbc88b
--- /dev/null
+++ b/tcl8.6/unix/tclAppInit.c
@@ -0,0 +1,169 @@
+/*
+ * tclAppInit.c --
+ *
+ *	Provides a default version of the main program and Tcl_AppInit
+ *	procedure for tclsh and other Tcl-based applications (without Tk).
+ *
+ * Copyright (c) 1993 The Regents of the University of California.
+ * Copyright (c) 1994-1997 Sun Microsystems, Inc.
+ * Copyright (c) 1998-1999 Scriptics Corporation.
+ *
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ */
+
+#undef BUILD_tcl
+#undef STATIC_BUILD
+#include "tcl.h"
+
+#ifdef TCL_TEST
+extern Tcl_PackageInitProc Tcltest_Init;
+extern Tcl_PackageInitProc Tcltest_SafeInit;
+#endif /* TCL_TEST */
+
+#ifdef TCL_XT_TEST
+extern void                XtToolkitInitialize(void);
+extern Tcl_PackageInitProc Tclxttest_Init;
+#endif /* TCL_XT_TEST */
+
+/*
+ * The following #if block allows you to change the AppInit function by using
+ * a #define of TCL_LOCAL_APPINIT instead of rewriting this entire file. The
+ * #if checks for that #define and uses Tcl_AppInit if it does not exist.
+ */
+
+#ifndef TCL_LOCAL_APPINIT
+#define TCL_LOCAL_APPINIT Tcl_AppInit
+#endif
+#ifndef MODULE_SCOPE
+#   define MODULE_SCOPE extern
+#endif
+MODULE_SCOPE int TCL_LOCAL_APPINIT(Tcl_Interp *);
+MODULE_SCOPE int main(int, char **);
+
+/*
+ * The following #if block allows you to change how Tcl finds the startup
+ * script, prime the library or encoding paths, fiddle with the argv, etc.,
+ * without needing to rewrite Tcl_Main()
+ */
+
+#ifdef TCL_LOCAL_MAIN_HOOK
+MODULE_SCOPE int TCL_LOCAL_MAIN_HOOK(int *argc, char ***argv);
+#endif
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * main --
+ *
+ *	This is the main program for the application.
+ *
+ * Results:
+ *	None: Tcl_Main never returns here, so this procedure never returns
+ *	either.
+ *
+ * Side effects:
+ *	Just about anything, since from here we call arbitrary Tcl code.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+main(
+    int argc,			/* Number of command-line arguments. */
+    char *argv[])		/* Values of command-line arguments. */
+{
+#ifdef TCL_XT_TEST
+    XtToolkitInitialize();
+#endif
+
+#ifdef TCL_LOCAL_MAIN_HOOK
+    TCL_LOCAL_MAIN_HOOK(&argc, &argv);
+#endif
+
+    Tcl_Main(argc, argv, TCL_LOCAL_APPINIT);
+    return 0;			/* Needed only to prevent compiler warning. */
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_AppInit --
+ *
+ *	This procedure performs application-specific initialization. Most
+ *	applications, especially those that incorporate additional packages,
+ *	will have their own version of this procedure.
+ *
+ * Results:
+ *	Returns a standard Tcl completion code, and leaves an error message in
+ *	the interp's result if an error occurs.
+ *
+ * Side effects:
+ *	Depends on the startup script.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+Tcl_AppInit(
+    Tcl_Interp *interp)		/* Interpreter for application. */
+{
+    if ((Tcl_Init)(interp) == TCL_ERROR) {
+	return TCL_ERROR;
+    }
+
+#ifdef TCL_XT_TEST
+    if (Tclxttest_Init(interp) == TCL_ERROR) {
+	return TCL_ERROR;
+    }
+#endif
+
+#ifdef TCL_TEST
+    if (Tcltest_Init(interp) == TCL_ERROR) {
+	return TCL_ERROR;
+    }
+    Tcl_StaticPackage(interp, "Tcltest", Tcltest_Init, Tcltest_SafeInit);
+#endif /* TCL_TEST */
+
+    /*
+     * Call the init procedures for included packages. Each call should look
+     * like this:
+     *
+     * if (Mod_Init(interp) == TCL_ERROR) {
+     *     return TCL_ERROR;
+     * }
+     *
+     * where "Mod" is the name of the module. (Dynamically-loadable packages
+     * should have the same entry-point name.)
+     */
+
+    /*
+     * Call Tcl_CreateCommand for application-specific commands, if they
+     * weren't already created by the init procedures called above.
+     */
+
+    /*
+     * Specify a user-specific startup file to invoke if the application is
+     * run interactively. Typically the startup file is "~/.apprc" where "app"
+     * is the name of the application. If this line is deleted then no
+     * user-specific startup file will be run under any conditions.
+     */
+
+#ifdef DJGPP
+    (Tcl_ObjSetVar2)(interp, Tcl_NewStringObj("tcl_rcFileName", -1), NULL,
+	    Tcl_NewStringObj("~/tclsh.rc", -1), TCL_GLOBAL_ONLY);
+#else
+    (Tcl_ObjSetVar2)(interp, Tcl_NewStringObj("tcl_rcFileName", -1), NULL,
+	    Tcl_NewStringObj("~/.tclshrc", -1), TCL_GLOBAL_ONLY);
+#endif
+
+    return TCL_OK;
+}
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/tcl8.6/unix/tclConfig.h.in b/tcl8.6/unix/tclConfig.h.in
new file mode 100644
index 0000000..a26a48f
--- /dev/null
+++ b/tcl8.6/unix/tclConfig.h.in
@@ -0,0 +1,511 @@
+/* ../unix/tclConfig.h.in.  Generated from configure.ac by autoheader.  */
+
+
+    #ifndef _TCLCONFIG
+    #define _TCLCONFIG
+
+/* Is gettimeofday() actually declared in <sys/time.h>? */
+#undef GETTOD_NOT_DECLARED
+
+/* Define to 1 if you have the <AvailabilityMacros.h> header file. */
+#undef HAVE_AVAILABILITYMACROS_H
+
+/* Define to 1 if the system has the type `blkcnt_t'. */
+#undef HAVE_BLKCNT_T
+
+/* Defined when compiler supports casting to union type. */
+#undef HAVE_CAST_TO_UNION
+
+/* Define to 1 if you have the `chflags' function. */
+#undef HAVE_CHFLAGS
+
+/* Define to 1 if you have the `copyfile' function. */
+#undef HAVE_COPYFILE
+
+/* Define to 1 if you have the <copyfile.h> header file. */
+#undef HAVE_COPYFILE_H
+
+/* Do we have access to Darwin CoreFoundation.framework? */
+#undef HAVE_COREFOUNDATION
+
+/* Is the cpuid instruction usable? */
+#undef HAVE_CPUID
+
+/* Is 'DIR64' in <sys/types.h>? */
+#undef HAVE_DIR64
+
+/* Define to 1 if you have the `freeaddrinfo' function. */
+#undef HAVE_FREEADDRINFO
+
+/* Do we have fts functions? */
+#undef HAVE_FTS
+
+/* Define to 1 if you have the `gai_strerror' function. */
+#undef HAVE_GAI_STRERROR
+
+/* Define to 1 if you have the `getaddrinfo' function. */
+#undef HAVE_GETADDRINFO
+
+/* Define to 1 if you have the `getattrlist' function. */
+#undef HAVE_GETATTRLIST
+
+/* Define to 1 if you have the `getcwd' function. */
+#undef HAVE_GETCWD
+
+/* Define to 1 if getgrgid_r is available. */
+#undef HAVE_GETGRGID_R
+
+/* Define to 1 if getgrgid_r takes 4 args. */
+#undef HAVE_GETGRGID_R_4
+
+/* Define to 1 if getgrgid_r takes 5 args. */
+#undef HAVE_GETGRGID_R_5
+
+/* Define to 1 if getgrnam_r is available. */
+#undef HAVE_GETGRNAM_R
+
+/* Define to 1 if getgrnam_r takes 4 args. */
+#undef HAVE_GETGRNAM_R_4
+
+/* Define to 1 if getgrnam_r takes 5 args. */
+#undef HAVE_GETGRNAM_R_5
+
+/* Define to 1 if gethostbyaddr_r is available. */
+#undef HAVE_GETHOSTBYADDR_R
+
+/* Define to 1 if gethostbyaddr_r takes 7 args. */
+#undef HAVE_GETHOSTBYADDR_R_7
+
+/* Define to 1 if gethostbyaddr_r takes 8 args. */
+#undef HAVE_GETHOSTBYADDR_R_8
+
+/* Define to 1 if gethostbyname_r is available. */
+#undef HAVE_GETHOSTBYNAME_R
+
+/* Define to 1 if gethostbyname_r takes 3 args. */
+#undef HAVE_GETHOSTBYNAME_R_3
+
+/* Define to 1 if gethostbyname_r takes 5 args. */
+#undef HAVE_GETHOSTBYNAME_R_5
+
+/* Define to 1 if gethostbyname_r takes 6 args. */
+#undef HAVE_GETHOSTBYNAME_R_6
+
+/* Define to 1 if you have the `getnameinfo' function. */
+#undef HAVE_GETNAMEINFO
+
+/* Define to 1 if getpwnam_r is available. */
+#undef HAVE_GETPWNAM_R
+
+/* Define to 1 if getpwnam_r takes 4 args. */
+#undef HAVE_GETPWNAM_R_4
+
+/* Define to 1 if getpwnam_r takes 5 args. */
+#undef HAVE_GETPWNAM_R_5
+
+/* Define to 1 if getpwuid_r is available. */
+#undef HAVE_GETPWUID_R
+
+/* Define to 1 if getpwuid_r takes 4 args. */
+#undef HAVE_GETPWUID_R_4
+
+/* Define to 1 if getpwuid_r takes 5 args. */
+#undef HAVE_GETPWUID_R_5
+
+/* Define to 1 if you have the `gmtime_r' function. */
+#undef HAVE_GMTIME_R
+
+/* Compiler support for module scope symbols */
+#undef HAVE_HIDDEN
+
+/* Do we have the intptr_t type? */
+#undef HAVE_INTPTR_T
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#undef HAVE_INTTYPES_H
+
+/* Do we have nl_langinfo()? */
+#undef HAVE_LANGINFO
+
+/* Define to 1 if you have the <libkern/OSAtomic.h> header file. */
+#undef HAVE_LIBKERN_OSATOMIC_H
+
+/* Define to 1 if you have the `localtime_r' function. */
+#undef HAVE_LOCALTIME_R
+
+/* Define to 1 if you have the `lseek64' function. */
+#undef HAVE_LSEEK64
+
+/* Define to 1 if you have the <memory.h> header file. */
+#undef HAVE_MEMORY_H
+
+/* Define to 1 if you have the `mkstemp' function. */
+#undef HAVE_MKSTEMP
+
+/* Define to 1 if you have the `mkstemps' function. */
+#undef HAVE_MKSTEMPS
+
+/* Define to 1 if you have the `mktime' function. */
+#undef HAVE_MKTIME
+
+/* Do we have MT-safe gethostbyaddr() ? */
+#undef HAVE_MTSAFE_GETHOSTBYADDR
+
+/* Do we have MT-safe gethostbyname() ? */
+#undef HAVE_MTSAFE_GETHOSTBYNAME
+
+/* Do we have <net/errno.h>? */
+#undef HAVE_NET_ERRNO_H
+
+/* Define to 1 if you have the `open64' function. */
+#undef HAVE_OPEN64
+
+/* Define to 1 if you have the `opendir' function. */
+#undef HAVE_OPENDIR
+
+/* Define to 1 if you have the `OSSpinLockLock' function. */
+#undef HAVE_OSSPINLOCKLOCK
+
+/* Define to 1 if you have the `pthread_atfork' function. */
+#undef HAVE_PTHREAD_ATFORK
+
+/* Define to 1 if you have the `pthread_attr_setstacksize' function. */
+#undef HAVE_PTHREAD_ATTR_SETSTACKSIZE
+
+/* Does putenv() copy strings or incorporate them by reference? */
+#undef HAVE_PUTENV_THAT_COPIES
+
+/* Are characters signed? */
+#undef HAVE_SIGNED_CHAR
+
+/* 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 `strtol' function. */
+#undef HAVE_STRTOL
+
+/* Define to 1 if the system has the type `struct addrinfo'. */
+#undef HAVE_STRUCT_ADDRINFO
+
+/* Is 'struct dirent64' in <sys/types.h>? */
+#undef HAVE_STRUCT_DIRENT64
+
+/* Define to 1 if the system has the type `struct in6_addr'. */
+#undef HAVE_STRUCT_IN6_ADDR
+
+/* Define to 1 if the system has the type `struct sockaddr_in6'. */
+#undef HAVE_STRUCT_SOCKADDR_IN6
+
+/* Define to 1 if the system has the type `struct sockaddr_storage'. */
+#undef HAVE_STRUCT_SOCKADDR_STORAGE
+
+/* Is 'struct stat64' in <sys/stat.h>? */
+#undef HAVE_STRUCT_STAT64
+
+/* Define to 1 if `st_blksize' is member of `struct stat'. */
+#undef HAVE_STRUCT_STAT_ST_BLKSIZE
+
+/* Define to 1 if `st_blocks' is member of `struct stat'. */
+#undef HAVE_STRUCT_STAT_ST_BLOCKS
+
+/* Define to 1 if you have the <sys/filio.h> header file. */
+#undef HAVE_SYS_FILIO_H
+
+/* Define to 1 if you have the <sys/ioctl.h> header file. */
+#undef HAVE_SYS_IOCTL_H
+
+/* Define to 1 if you have the <sys/modem.h> header file. */
+#undef HAVE_SYS_MODEM_H
+
+/* Define to 1 if you have the <sys/param.h> header file. */
+#undef HAVE_SYS_PARAM_H
+
+/* Should we include <sys/select.h>? */
+#undef HAVE_SYS_SELECT_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/time.h> header file. */
+#undef HAVE_SYS_TIME_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 <termios.h> header file. */
+#undef HAVE_TERMIOS_H
+
+/* Should we use the global timezone variable? */
+#undef HAVE_TIMEZONE_VAR
+
+/* Should we use the tm_gmtoff field of struct tm? */
+#undef HAVE_TM_GMTOFF
+
+/* Should we use the tm_tzadj field of struct tm? */
+#undef HAVE_TM_TZADJ
+
+/* Is off64_t in <sys/types.h>? */
+#undef HAVE_TYPE_OFF64_T
+
+/* Do we have the uintptr_t type? */
+#undef HAVE_UINTPTR_T
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#undef HAVE_UNISTD_H
+
+/* Define to 1 if you have the `waitpid' function. */
+#undef HAVE_WAITPID
+
+/* Is weak import available? */
+#undef HAVE_WEAK_IMPORT
+
+/* Is there an installed zlib? */
+#undef HAVE_ZLIB
+
+/* Is this a Mac I see before me? */
+#undef MAC_OSX_TCL
+
+/* No Compiler support for module scope symbols */
+#undef MODULE_SCOPE
+
+/* Default libtommath precision. */
+#undef MP_PREC
+
+/* Is no debugging enabled? */
+#undef NDEBUG
+
+/* Use compat implementation of getaddrinfo() and friends */
+#undef NEED_FAKE_RFC2553
+
+/* Is Darwin CoreFoundation unavailable for 64-bit? */
+#undef NO_COREFOUNDATION_64
+
+/* Do we have <dirent.h>? */
+#undef NO_DIRENT_H
+
+/* Do we have <dlfcn.h>? */
+#undef NO_DLFCN_H
+
+/* Do we have fd_set? */
+#undef NO_FD_SET
+
+/* Do we have <float.h>? */
+#undef NO_FLOAT_H
+
+/* Do we have fstatfs()? */
+#undef NO_FSTATFS
+
+/* Do we have gettimeofday()? */
+#undef NO_GETTOD
+
+/* Do we have getwd() */
+#undef NO_GETWD
+
+/* Do we have a usable 'isnan'? */
+#undef NO_ISNAN
+
+/* Do we have memmove()? */
+#undef NO_MEMMOVE
+
+/* Do we have realpath() */
+#undef NO_REALPATH
+
+/* Do we have <stdlib.h>? */
+#undef NO_STDLIB_H
+
+/* Do we have strerror() */
+#undef NO_STRERROR
+
+/* Do we have <string.h>? */
+#undef NO_STRING_H
+
+/* Do we have <sys/wait.h>? */
+#undef NO_SYS_WAIT_H
+
+/* Do we have uname() */
+#undef NO_UNAME
+
+/* Do we have a usable 'union wait'? */
+#undef NO_UNION_WAIT
+
+/* Do we have <values.h>? */
+#undef NO_VALUES_H
+
+/* Do we have wait3() */
+#undef NO_WAIT3
+
+/* 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 version of this package. */
+#undef PACKAGE_VERSION
+
+/* Is this a static build? */
+#undef STATIC_BUILD
+
+/* Define to 1 if you have the ANSI C header files. */
+#undef STDC_HEADERS
+
+/* What encoding should be used for embedded configuration info? */
+#undef TCL_CFGVAL_ENCODING
+
+/* Is this a 64-bit build? */
+#undef TCL_CFG_DO64BIT
+
+/* Is this an optimized build? */
+#undef TCL_CFG_OPTIMIZED
+
+/* Is bytecode debugging enabled? */
+#undef TCL_COMPILE_DEBUG
+
+/* Are bytecode statistics enabled? */
+#undef TCL_COMPILE_STATS
+
+/* Are we to override what our default encoding is? */
+#undef TCL_DEFAULT_ENCODING
+
+/* Is Tcl built as a framework? */
+#undef TCL_FRAMEWORK
+
+/* Can this platform load code from memory? */
+#undef TCL_LOAD_FROM_MEMORY
+
+/* Is memory debugging enabled? */
+#undef TCL_MEM_DEBUG
+
+/* What is the default extension for shared libraries? */
+#undef TCL_SHLIB_EXT
+
+/* Are we building with threads enabled? */
+#undef TCL_THREADS
+
+/* Build libtommath? */
+#undef TCL_TOMMATH
+
+/* Do we allow unloading of shared libraries? */
+#undef TCL_UNLOAD_DLLS
+
+/* Does this platform have wide high-resolution clicks? */
+#undef TCL_WIDE_CLICKS
+
+/* Are wide integers to be implemented with C 'long's? */
+#undef TCL_WIDE_INT_IS_LONG
+
+/* What type should be used to define wide integers? */
+#undef TCL_WIDE_INT_TYPE
+
+/* Define to 1 if you can safely include both <sys/time.h> and <time.h>. */
+#undef TIME_WITH_SYS_TIME
+
+/* Is getcwd Posix-compliant? */
+#undef USEGETWD
+
+/* May we include <dirent2.h>? */
+#undef USE_DIRENT2_H
+
+/* Are we building with DTrace support? */
+#undef USE_DTRACE
+
+/* Should we use FIONBIO? */
+#undef USE_FIONBIO
+
+/* Do we want to use the threaded memory allocator? */
+#undef USE_THREAD_ALLOC
+
+/* Should we use vfork() instead of fork()? */
+#undef USE_VFORK
+
+/* Define to 1 if your processor stores words with the most significant byte
+   first (like Motorola and SPARC, unlike Intel and VAX). */
+#undef WORDS_BIGENDIAN
+
+/* Are Darwin SUSv3 extensions available? */
+#undef _DARWIN_C_SOURCE
+
+/* Add the _ISOC99_SOURCE flag when building */
+#undef _ISOC99_SOURCE
+
+/* Add the _LARGEFILE64_SOURCE flag when building */
+#undef _LARGEFILE64_SOURCE
+
+/* Add the _LARGEFILE_SOURCE64 flag when building */
+#undef _LARGEFILE_SOURCE64
+
+/* # needed in sys/socket.h Should OS/390 do the right thing with sockets? */
+#undef _OE_SOCKETS
+
+/* Do we really want to follow the standard? Yes we do! */
+#undef _POSIX_PTHREAD_SEMANTICS
+
+/* Do we want the reentrant OS API? */
+#undef _REENTRANT
+
+/* Do we want the thread-safe OS API? */
+#undef _THREAD_SAFE
+
+/* Do we want to use the XOPEN network library? */
+#undef _XOPEN_SOURCE
+
+/* Do we want to use the XOPEN network library? */
+#undef _XOPEN_SOURCE_EXTENDED
+
+/* Define to 1 if type `char' is unsigned and you are not using gcc.  */
+#ifndef __CHAR_UNSIGNED__
+# undef __CHAR_UNSIGNED__
+#endif
+
+/* Define to `int' if <sys/types.h> doesn't define. */
+#undef gid_t
+
+/* Define to `__inline__' or `__inline' if that's what the C compiler
+   calls it, or to nothing if 'inline' is not supported under any name.  */
+#ifndef __cplusplus
+#undef inline
+#endif
+
+/* Signed integer type wide enough to hold a pointer. */
+#undef intptr_t
+
+/* Define to `int' if <sys/types.h> does not define. */
+#undef mode_t
+
+/* Define to `int' if <sys/types.h> does not define. */
+#undef pid_t
+
+/* Define to `unsigned' if <sys/types.h> does not define. */
+#undef size_t
+
+/* Define as int if socklen_t is not available */
+#undef socklen_t
+
+/* Define to `int' if <sys/types.h> doesn't define. */
+#undef uid_t
+
+/* Unsigned integer type wide enough to hold a pointer. */
+#undef uintptr_t
+
+
+    /* Undef unused package specific autoheader defines so that we can
+     * include both tclConfig.h and tkConfig.h at the same time: */
+    /* override */ #undef PACKAGE_NAME
+    /* override */ #undef PACKAGE_STRING
+    /* override */ #undef PACKAGE_TARNAME
+    #endif /* _TCLCONFIG */
diff --git a/tcl8.6/unix/tclConfig.sh.in b/tcl8.6/unix/tclConfig.sh.in
new file mode 100644
index 0000000..f768690
--- /dev/null
+++ b/tcl8.6/unix/tclConfig.sh.in
@@ -0,0 +1,169 @@
+# tclConfig.sh --
+#
+# This shell script (for sh) is generated automatically by Tcl's
+# configure script.  It will create shell variables for most of
+# the configuration options discovered by the configure script.
+# This script is intended to be included by the configure scripts
+# for Tcl extensions so that they don't have to figure this all
+# out for themselves.
+#
+# The information in this file is specific to a single platform.
+
+# Tcl's version number.
+TCL_VERSION='@TCL_VERSION@'
+TCL_MAJOR_VERSION='@TCL_MAJOR_VERSION@'
+TCL_MINOR_VERSION='@TCL_MINOR_VERSION@'
+TCL_PATCH_LEVEL='@TCL_PATCH_LEVEL@'
+
+# C compiler to use for compilation.
+TCL_CC='@CC@'
+
+# -D flags for use with the C compiler.
+TCL_DEFS='@DEFS@'
+
+# TCL_DBGX used to be used to distinguish debug vs. non-debug builds.
+# This was a righteous pain so the core doesn't do that any more.
+TCL_DBGX=
+
+# Default flags used in an optimized and debuggable build, respectively.
+TCL_CFLAGS_DEBUG='@CFLAGS_DEBUG@'
+TCL_CFLAGS_OPTIMIZE='@CFLAGS_OPTIMIZE@'
+
+# Default linker flags used in an optimized and debuggable build, respectively.
+TCL_LDFLAGS_DEBUG='@LDFLAGS_DEBUG@'
+TCL_LDFLAGS_OPTIMIZE='@LDFLAGS_OPTIMIZE@'
+
+# Flag, 1: we built a shared lib, 0 we didn't
+TCL_SHARED_BUILD=@TCL_SHARED_BUILD@
+
+# The name of the Tcl library (may be either a .a file or a shared library):
+TCL_LIB_FILE='@TCL_LIB_FILE@'
+
+# Additional libraries to use when linking Tcl.
+TCL_LIBS='@TCL_LIBS@'
+
+# Top-level directory in which Tcl's platform-independent files are
+# installed.
+TCL_PREFIX='@prefix@'
+
+# Top-level directory in which Tcl's platform-specific files (e.g.
+# executables) are installed.
+TCL_EXEC_PREFIX='@exec_prefix@'
+
+# Flags to pass to cc when compiling the components of a shared library:
+TCL_SHLIB_CFLAGS='@SHLIB_CFLAGS@'
+
+# Flags to pass to cc to get warning messages
+TCL_CFLAGS_WARNING='@CFLAGS_WARNING@'
+
+# Extra flags to pass to cc:
+TCL_EXTRA_CFLAGS='@CFLAGS@'
+
+# Base command to use for combining object files into a shared library:
+TCL_SHLIB_LD='@SHLIB_LD@'
+
+# Base command to use for combining object files into a static library:
+TCL_STLIB_LD='@STLIB_LD@'
+
+# Either '$LIBS' (if dependent libraries should be included when linking
+# shared libraries) or an empty string.  See Tcl's configure.in for more
+# explanation.
+TCL_SHLIB_LD_LIBS='@SHLIB_LD_LIBS@'
+
+# Suffix to use for the name of a shared library.
+TCL_SHLIB_SUFFIX='@SHLIB_SUFFIX@'
+
+# Library file(s) to include in tclsh and other base applications
+# in order to provide facilities needed by DLOBJ above.
+TCL_DL_LIBS='@DL_LIBS@'
+
+# Flags to pass to the compiler when linking object files into
+# an executable tclsh or tcltest binary.
+TCL_LD_FLAGS='@LDFLAGS@'
+
+# Flags to pass to cc/ld, such as "-R /usr/local/tcl/lib", that tell the
+# run-time dynamic linker where to look for shared libraries such as
+# libtcl.so.  Used when linking applications.  Only works if there
+# is a variable "LIB_RUNTIME_DIR" defined in the Makefile.
+TCL_CC_SEARCH_FLAGS='@CC_SEARCH_FLAGS@'
+TCL_LD_SEARCH_FLAGS='@LD_SEARCH_FLAGS@'
+
+# Additional object files linked with Tcl to provide compatibility
+# with standard facilities from ANSI C or POSIX.
+TCL_COMPAT_OBJS='@LIBOBJS@'
+
+# Name of the ranlib program to use.
+TCL_RANLIB='@RANLIB@'
+
+# -l flag to pass to the linker to pick up the Tcl library
+TCL_LIB_FLAG='@TCL_LIB_FLAG@'
+
+# String to pass to linker to pick up the Tcl library from its
+# build directory.
+TCL_BUILD_LIB_SPEC='@TCL_BUILD_LIB_SPEC@'
+
+# String to pass to linker to pick up the Tcl library from its
+# installed directory.
+TCL_LIB_SPEC='@TCL_LIB_SPEC@'
+
+# String to pass to the compiler so that an extension can
+# find installed Tcl headers.
+TCL_INCLUDE_SPEC='@TCL_INCLUDE_SPEC@'
+
+# Indicates whether a version numbers should be used in -l switches
+# ("ok" means it's safe to use switches like -ltcl7.5;  "nodots" means
+# use switches like -ltcl75).  SunOS and FreeBSD require "nodots", for
+# example.
+TCL_LIB_VERSIONS_OK='@TCL_LIB_VERSIONS_OK@'
+
+# String that can be evaluated to generate the part of a shared library
+# name that comes after the "libxxx" (includes version number, if any,
+# extension, and anything else needed).  May depend on the variables
+# VERSION and SHLIB_SUFFIX.  On most UNIX systems this is
+# ${VERSION}${SHLIB_SUFFIX}.
+TCL_SHARED_LIB_SUFFIX='@CFG_TCL_SHARED_LIB_SUFFIX@'
+
+# String that can be evaluated to generate the part of an unshared library
+# name that comes after the "libxxx" (includes version number, if any,
+# extension, and anything else needed).  May depend on the variable
+# VERSION.  On most UNIX systems this is ${VERSION}.a.
+TCL_UNSHARED_LIB_SUFFIX='@CFG_TCL_UNSHARED_LIB_SUFFIX@'
+
+# Location of the top-level source directory from which Tcl was built.
+# This is the directory that contains a README file as well as
+# subdirectories such as generic, unix, etc.  If Tcl was compiled in a
+# different place than the directory containing the source files, this
+# points to the location of the sources, not the location where Tcl was
+# compiled.
+TCL_SRC_DIR='@TCL_SRC_DIR@'
+
+# List of standard directories in which to look for packages during
+# "package require" commands.  Contains the "prefix" directory plus also
+# the "exec_prefix" directory, if it is different.
+TCL_PACKAGE_PATH='@TCL_PACKAGE_PATH@'
+
+# Tcl supports stub.
+TCL_SUPPORTS_STUBS=1
+
+# The name of the Tcl stub library (.a):
+TCL_STUB_LIB_FILE='@TCL_STUB_LIB_FILE@'
+
+# -l flag to pass to the linker to pick up the Tcl stub library
+TCL_STUB_LIB_FLAG='@TCL_STUB_LIB_FLAG@'
+
+# String to pass to linker to pick up the Tcl stub library from its
+# build directory.
+TCL_BUILD_STUB_LIB_SPEC='@TCL_BUILD_STUB_LIB_SPEC@'
+
+# String to pass to linker to pick up the Tcl stub library from its
+# installed directory.
+TCL_STUB_LIB_SPEC='@TCL_STUB_LIB_SPEC@'
+
+# Path to the Tcl stub library in the build directory.
+TCL_BUILD_STUB_LIB_PATH='@TCL_BUILD_STUB_LIB_PATH@'
+
+# Path to the Tcl stub library in the install directory.
+TCL_STUB_LIB_PATH='@TCL_STUB_LIB_PATH@'
+
+# Flag, 1: we built Tcl with threads enabled, 0 we didn't
+TCL_THREADS=@TCL_THREADS@
diff --git a/tcl8.6/unix/tclLoadAix.c b/tcl8.6/unix/tclLoadAix.c
new file mode 100644
index 0000000..88e6b50
--- /dev/null
+++ b/tcl8.6/unix/tclLoadAix.c
@@ -0,0 +1,630 @@
+/*
+ * tclLoadAix.c --
+ *
+ *	This file implements the dlopen and dlsym APIs under the AIX operating
+ *	system, to enable the Tcl "load" command to work. This code was
+ *	provided by Jens-Uwe Mager.
+ *
+ *	This file is subject to the following copyright notice, which is
+ *	different from the notice used elsewhere in Tcl. The file has been
+ *	modified to incorporate the file dlfcn.h in-line.
+ *
+ *	Copyright (c) 1992,1993,1995,1996, Jens-Uwe Mager, Helios Software GmbH
+ *	Not derived from licensed software.
+ *
+ *	Permission is granted to freely use, copy, modify, and redistribute
+ *	this software, provided that the author is not construed to be liable
+ *	for any results of using the software, alterations are clearly marked
+ *	as such, and this notice is not modified.
+ *
+ * Note: this file has been altered from the original in a few ways in order
+ * to work properly with Tcl.
+ */
+
+/*
+ * @(#)dlfcn.c	1.7 revision of 95/08/14  19:08:38
+ * This is an unpublished work copyright (c) 1992 HELIOS Software GmbH
+ * 30159 Hannover, Germany
+ */
+
+#include <stdio.h>
+#include <errno.h>
+#include <string.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/ldr.h>
+#include <a.out.h>
+#include <ldfcn.h>
+#include "../compat/dlfcn.h"
+
+/*
+ * We simulate dlopen() et al. through a call to load. Because AIX has no call
+ * to find an exported symbol we read the loader section of the loaded module
+ * and build a list of exported symbols and their virtual address.
+ */
+
+typedef struct {
+    char *name;			/* The symbols's name. */
+    void *addr;			/* Its relocated virtual address. */
+} Export, *ExportPtr;
+
+/*
+ * xlC uses the following structure to list its constructors and destructors.
+ * This is gleaned from the output of munch.
+ */
+
+typedef struct {
+    void (*init)(void);		/* call static constructors */
+    void (*term)(void);		/* call static destructors */
+} Cdtor, *CdtorPtr;
+
+/*
+ * The void * handle returned from dlopen is actually a ModulePtr.
+ */
+
+typedef struct Module {
+    struct Module *next;
+    char *name;			/* module name for refcounting */
+    int refCnt;			/* the number of references */
+    void *entry;		/* entry point from load */
+    struct dl_info *info;	/* optional init/terminate functions */
+    CdtorPtr cdtors;		/* optional C++ constructors */
+    int nExports;		/* the number of exports found */
+    ExportPtr exports;		/* the array of exports */
+} Module, *ModulePtr;
+
+/*
+ * We keep a list of all loaded modules to be able to call the fini handlers
+ * and destructors at atexit() time.
+ */
+
+static ModulePtr modList;
+
+/*
+ * The last error from one of the dl* routines is kept in static variables
+ * here. Each error is returned only once to the caller.
+ */
+
+static char errbuf[BUFSIZ];
+static int errvalid;
+
+static void caterr(char *);
+static int readExports(ModulePtr);
+static void terminate(void);
+static void *findMain(void);
+
+void *
+dlopen(
+    const char *path,
+    int mode)
+{
+    register ModulePtr mp;
+    static void *mainModule;
+
+    /*
+     * Upon the first call register a terminate handler that will close all
+     * libraries. Also get a reference to the main module for use with
+     * loadbind.
+     */
+
+    if (!mainModule) {
+	mainModule = findMain();
+	if (mainModule == NULL) {
+	    return NULL;
+	}
+	atexit(terminate);
+    }
+
+    /*
+     * Scan the list of modules if we have the module already loaded.
+     */
+
+    for (mp = modList; mp; mp = mp->next) {
+	if (strcmp(mp->name, path) == 0) {
+	    mp->refCnt++;
+	    return (void *) mp;
+	}
+    }
+
+    mp = (ModulePtr) calloc(1, sizeof(*mp));
+    if (mp == NULL) {
+	errvalid++;
+	strcpy(errbuf, "calloc: ");
+	strcat(errbuf, strerror(errno));
+	return NULL;
+    }
+
+    mp->name = malloc((unsigned) (strlen(path) + 1));
+    strcpy(mp->name, path);
+
+    /*
+     * load should be declared load(const char *...). Thus we cast the path to
+     * a normal char *. Ugly.
+     */
+
+    mp->entry = (void *) load((char *)path, L_NOAUTODEFER, NULL);
+    if (mp->entry == NULL) {
+	free(mp->name);
+	free(mp);
+	errvalid++;
+	strcpy(errbuf, "dlopen: ");
+	strcat(errbuf, path);
+	strcat(errbuf, ": ");
+
+	/*
+	 * If AIX says the file is not executable, the error can be further
+	 * described by querying the loader about the last error.
+	 */
+
+	if (errno == ENOEXEC) {
+	    char *tmp[BUFSIZ/sizeof(char *)], **p;
+
+	    if (loadquery(L_GETMESSAGES, tmp, sizeof(tmp)) == -1) {
+		strcpy(errbuf, strerror(errno));
+	    } else {
+		for (p=tmp ; *p ; p++) {
+		    caterr(*p);
+		}
+	    }
+	} else {
+	    strcat(errbuf, strerror(errno));
+	}
+	return NULL;
+    }
+
+    mp->refCnt = 1;
+    mp->next = modList;
+    modList = mp;
+
+    if (loadbind(0, mainModule, mp->entry) == -1) {
+    loadbindFailure:
+	dlclose(mp);
+	errvalid++;
+	strcpy(errbuf, "loadbind: ");
+	strcat(errbuf, strerror(errno));
+	return NULL;
+    }
+
+    /*
+     * If the user wants global binding, loadbind against all other loaded
+     * modules.
+     */
+
+    if (mode & RTLD_GLOBAL) {
+	register ModulePtr mp1;
+
+	for (mp1 = mp->next; mp1; mp1 = mp1->next) {
+	    if (loadbind(0, mp1->entry, mp->entry) == -1) {
+		goto loadbindFailure;
+	    }
+	}
+    }
+
+    if (readExports(mp) == -1) {
+	dlclose(mp);
+	return NULL;
+    }
+
+    /*
+     * If there is a dl_info structure, call the init function.
+     */
+
+    if (mp->info = (struct dl_info *)dlsym(mp, "dl_info")) {
+	if (mp->info->init) {
+	    mp->info->init();
+	}
+    } else {
+	errvalid = 0;
+    }
+
+    /*
+     * If the shared object was compiled using xlC we will need to call static
+     * constructors (and later on dlclose destructors).
+     */
+
+    if (mp->cdtors = (CdtorPtr) dlsym(mp, "__cdtors")) {
+	while (mp->cdtors->init) {
+	    mp->cdtors->init();
+	    mp->cdtors++;
+	}
+    } else {
+	errvalid = 0;
+    }
+
+    return (void *) mp;
+}
+
+/*
+ * Attempt to decipher an AIX loader error message and append it to our static
+ * error message buffer.
+ */
+
+static void
+caterr(
+    char *s)
+{
+    register char *p = s;
+
+    while (*p >= '0' && *p <= '9') {
+	p++;
+    }
+    switch (atoi(s)) {		/* INTL: "C", UTF safe. */
+    case L_ERROR_TOOMANY:
+	strcat(errbuf, "to many errors");
+	break;
+    case L_ERROR_NOLIB:
+	strcat(errbuf, "can't load library");
+	strcat(errbuf, p);
+	break;
+    case L_ERROR_UNDEF:
+	strcat(errbuf, "can't find symbol");
+	strcat(errbuf, p);
+	break;
+    case L_ERROR_RLDBAD:
+	strcat(errbuf, "bad RLD");
+	strcat(errbuf, p);
+	break;
+    case L_ERROR_FORMAT:
+	strcat(errbuf, "bad exec format in");
+	strcat(errbuf, p);
+	break;
+    case L_ERROR_ERRNO:
+	strcat(errbuf, strerror(atoi(++p)));	/* INTL: "C", UTF safe. */
+	break;
+    default:
+	strcat(errbuf, s);
+	break;
+    }
+}
+
+void *
+dlsym(
+    void *handle,
+    const char *symbol)
+{
+    register ModulePtr mp = (ModulePtr)handle;
+    register ExportPtr ep;
+    register int i;
+
+    /*
+     * Could speed up the search, but I assume that one assigns the result to
+     * function pointers anyways.
+     */
+
+    for (ep = mp->exports, i = mp->nExports; i; i--, ep++) {
+	if (strcmp(ep->name, symbol) == 0) {
+	    return ep->addr;
+	}
+    }
+
+    errvalid++;
+    strcpy(errbuf, "dlsym: undefined symbol ");
+    strcat(errbuf, symbol);
+    return NULL;
+}
+
+char *
+dlerror(void)
+{
+    if (errvalid) {
+	errvalid = 0;
+	return errbuf;
+    }
+    return NULL;
+}
+
+int
+dlclose(
+    void *handle)
+{
+    register ModulePtr mp = (ModulePtr)handle;
+    int result;
+    register ModulePtr mp1;
+
+    if (--mp->refCnt > 0) {
+	return 0;
+    }
+
+    if (mp->info && mp->info->fini) {
+	mp->info->fini();
+    }
+
+    if (mp->cdtors) {
+	while (mp->cdtors->term) {
+	    mp->cdtors->term();
+	    mp->cdtors++;
+	}
+    }
+
+    result = unload(mp->entry);
+    if (result == -1) {
+	errvalid++;
+	strcpy(errbuf, strerror(errno));
+    }
+
+    if (mp->exports) {
+	register ExportPtr ep;
+	register int i;
+	for (ep = mp->exports, i = mp->nExports; i; i--, ep++) {
+	    if (ep->name) {
+		free(ep->name);
+	    }
+	}
+	free(mp->exports);
+    }
+
+    if (mp == modList) {
+	modList = mp->next;
+    } else {
+	for (mp1 = modList; mp1; mp1 = mp1->next) {
+	    if (mp1->next == mp) {
+		mp1->next = mp->next;
+		break;
+	    }
+	}
+    }
+
+    free(mp->name);
+    free(mp);
+    return result;
+}
+
+static void
+terminate(void)
+{
+    while (modList) {
+	dlclose(modList);
+    }
+}
+
+/*
+ * Build the export table from the XCOFF .loader section.
+ */
+
+static int
+readExports(
+    ModulePtr mp)
+{
+    LDFILE *ldp = NULL;
+    SCNHDR sh, shdata;
+    LDHDR *lhp;
+    char *ldbuf;
+    LDSYM *ls;
+    int i;
+    ExportPtr ep;
+    const char *errMsg;
+
+#define Error(msg) do{errMsg=(msg);goto error;}while(0)
+#define SysErr() Error(strerror(errno))
+
+    ldp = ldopen(mp->name, ldp);
+    if (ldp == NULL) {
+	struct ld_info *lp;
+	char *buf;
+	int size = 0;
+
+	if (errno != ENOENT) {
+	    SysErr();
+	}
+
+	/*
+	 * The module might be loaded due to the LIBPATH environment variable.
+	 * Search for the loaded module using L_GETINFO.
+	 */
+
+	while (1) {
+	    size += 4 * 1024;
+	    buf = malloc(size);
+	    if (buf == NULL) {
+		SysErr();
+	    }
+
+	    i = loadquery(L_GETINFO, buf, size);
+
+	    if (i != -1) {
+		break;
+	    }
+	    free(buf);
+	    if (errno != ENOMEM) {
+		SysErr();
+	    }
+	}
+
+	/*
+	 * Traverse the list of loaded modules. The entry point returned by
+	 * load() does actually point to the data segment origin.
+	 */
+
+	lp = (struct ld_info *) buf;
+	while (lp) {
+	    if (lp->ldinfo_dataorg == mp->entry) {
+		ldp = ldopen(lp->ldinfo_filename, ldp);
+		break;
+	    }
+	    if (lp->ldinfo_next == 0) {
+		lp = NULL;
+	    } else {
+		lp = (struct ld_info *)((char *)lp + lp->ldinfo_next);
+	    }
+	}
+
+	free(buf);
+
+	if (!ldp) {
+	    SysErr();
+	}
+    }
+
+    if (TYPE(ldp) != U802TOCMAGIC) {
+	Error("bad magic");
+    }
+
+    /*
+     * Get the padding for the data section. This is needed for AIX 4.1
+     * compilers. This is used when building the final function pointer to the
+     * exported symbol.
+     */
+
+    if (ldnshread(ldp, _DATA, &shdata) != SUCCESS) {
+	Error("cannot read data section header");
+    }
+
+    if (ldnshread(ldp, _LOADER, &sh) != SUCCESS) {
+	Error("cannot read loader section header");
+    }
+
+    /*
+     * We read the complete loader section in one chunk, this makes finding
+     * long symbol names residing in the string table easier.
+     */
+
+    ldbuf = (char *) malloc(sh.s_size);
+    if (ldbuf == NULL) {
+	SysErr();
+    }
+
+    if (FSEEK(ldp, sh.s_scnptr, BEGINNING) != OKFSEEK) {
+	free(ldbuf);
+	Error("cannot seek to loader section");
+    }
+
+    if (FREAD(ldbuf, sh.s_size, 1, ldp) != 1) {
+	free(ldbuf);
+	Error("cannot read loader section");
+    }
+
+    lhp = (LDHDR *) ldbuf;
+    ls = (LDSYM *)(ldbuf + LDHDRSZ);
+
+    /*
+     * Count the number of exports to include in our export table.
+     */
+
+    for (i = lhp->l_nsyms; i; i--, ls++) {
+	if (!LDR_EXPORT(*ls)) {
+	    continue;
+	}
+	mp->nExports++;
+    }
+
+    mp->exports = (ExportPtr) calloc(mp->nExports, sizeof(*mp->exports));
+    if (mp->exports == NULL) {
+	free(ldbuf);
+	SysErr();
+    }
+
+    /*
+     * Fill in the export table. All entries are relative to the entry point
+     * we got from load.
+     */
+
+    ep = mp->exports;
+    ls = (LDSYM *)(ldbuf + LDHDRSZ);
+    for (i=lhp->l_nsyms ; i!=0 ; i--,ls++) {
+	char *symname;
+	char tmpsym[SYMNMLEN+1];
+
+	if (!LDR_EXPORT(*ls)) {
+	    continue;
+	}
+
+	if (ls->l_zeroes == 0) {
+	    symname = ls->l_offset + lhp->l_stoff + ldbuf;
+	} else {
+	    /*
+	     * The l_name member is not zero terminated, we must copy the
+	     * first SYMNMLEN chars and make sure we have a zero byte at the
+	     * end.
+	     */
+
+	    strncpy(tmpsym, ls->l_name, SYMNMLEN);
+	    tmpsym[SYMNMLEN] = '\0';
+	    symname = tmpsym;
+	}
+	ep->name = malloc((unsigned) (strlen(symname) + 1));
+	strcpy(ep->name, symname);
+	ep->addr = (void *)((unsigned long)
+		mp->entry + ls->l_value - shdata.s_vaddr);
+	ep++;
+    }
+    free(ldbuf);
+    while (ldclose(ldp) == FAILURE) {
+	/* Empty body */
+    }
+    return 0;
+
+    /*
+     * This is a factoring out of the error-handling code to make the rest of
+     * the function much simpler to read.
+     */
+
+  error:
+    errvalid++;
+    strcpy(errbuf, "readExports: ");
+    strcat(errbuf, errMsg);
+
+    if (ldp != NULL) {
+	while (ldclose(ldp) == FAILURE) {
+	    /* Empty body */
+	}
+    }
+    return -1;
+}
+
+/*
+ * Find the main modules entry point. This is used as export pointer for
+ * loadbind() to be able to resolve references to the main part.
+ */
+
+static void *
+findMain(void)
+{
+    struct ld_info *lp;
+    char *buf;
+    int size = 4*1024;
+    int i;
+    void *ret;
+
+    buf = malloc(size);
+    if (buf == NULL) {
+	goto error;
+    }
+
+    while ((i = loadquery(L_GETINFO, buf, size)) == -1 && errno == ENOMEM) {
+	free(buf);
+	size += 4*1024;
+	buf = malloc(size);
+	if (buf == NULL) {
+	    goto error;
+	}
+    }
+
+    if (i == -1) {
+	free(buf);
+	goto error;
+    }
+
+    /*
+     * The first entry is the main module. The entry point returned by load()
+     * does actually point to the data segment origin.
+     */
+
+    lp = (struct ld_info *) buf;
+    ret = lp->ldinfo_dataorg;
+    free(buf);
+    return ret;
+
+  error:
+    errvalid++;
+    strcpy(errbuf, "findMain: ");
+    strcat(errbuf, strerror(errno));
+    return NULL;
+}
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/tcl8.6/unix/tclLoadDl.c b/tcl8.6/unix/tclLoadDl.c
new file mode 100644
index 0000000..aec071c
--- /dev/null
+++ b/tcl8.6/unix/tclLoadDl.c
@@ -0,0 +1,274 @@
+/*
+ * tclLoadDl.c --
+ *
+ *	This procedure provides a version of the TclLoadFile that works with
+ *	the "dlopen" and "dlsym" library procedures for dynamic loading.
+ *
+ * Copyright (c) 1995-1997 Sun Microsystems, Inc.
+ *
+ * See the file "license.terms" for information on usage and redistribution
+ * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ */
+
+#include "tclInt.h"
+#ifdef NO_DLFCN_H
+#   include "../compat/dlfcn.h"
+#else
+#   include <dlfcn.h>
+#endif
+
+/*
+ * In some systems, like SunOS 4.1.3, the RTLD_NOW flag isn't defined and this
+ * argument to dlopen must always be 1. The RTLD_LOCAL flag doesn't exist on
+ * some platforms; if it doesn't exist, set it to 0 so it has no effect.
+ * See [Bug #3216070]
+ */
+
+#ifndef RTLD_NOW
+#   define RTLD_NOW 1
+#endif
+
+#ifndef RTLD_LOCAL
+#   define RTLD_LOCAL 0
+#endif
+
+/*
+ * Static procedures defined within this file.
+ */
+
+static void *		FindSymbol(Tcl_Interp *interp,
+			    Tcl_LoadHandle loadHandle, const char *symbol);
+static void		UnloadFile(Tcl_LoadHandle loadHandle);
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * TclpDlopen --
+ *
+ *	Dynamically loads a binary code file into memory and returns a handle
+ *	to the new code.
+ *
+ * Results:
+ *	A standard Tcl completion code. If an error occurs, an error message
+ *	is left in the interp's result.
+ *
+ * Side effects:
+ *	New code suddenly appears in memory.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+int
+TclpDlopen(
+    Tcl_Interp *interp,		/* Used for error reporting. */
+    Tcl_Obj *pathPtr,		/* Name of the file containing the desired
+				 * code (UTF-8). */
+    Tcl_LoadHandle *loadHandle,	/* Filled with token for dynamically loaded
+				 * file which will be passed back to
+				 * (*unloadProcPtr)() to unload the file. */
+    Tcl_FSUnloadFileProc **unloadProcPtr,
+				/* Filled with address of Tcl_FSUnloadFileProc
+				 * function which should be used for this
+				 * file. */
+    int flags)
+{
+    void *handle;
+    Tcl_LoadHandle newHandle;
+    const char *native;
+    int dlopenflags = 0;
+
+    /*
+     * First try the full path the user gave us. This is particularly
+     * important if the cwd is inside a vfs, and we are trying to load using a
+     * relative path.
+     */
+
+    native = Tcl_FSGetNativePath(pathPtr);
+    /*
+     * Use (RTLD_NOW|RTLD_LOCAL) as default, see [Bug #3216070]
+     */
+    if (flags & TCL_LOAD_GLOBAL) {
+    	dlopenflags |= RTLD_GLOBAL;
+    } else {
+    	dlopenflags |= RTLD_LOCAL;
+    }
+    if (flags & TCL_LOAD_LAZY) {
+    	dlopenflags |= RTLD_LAZY;
+    } else {
+    	dlopenflags |= RTLD_NOW;
+    }
+    handle = dlopen(native, dlopenflags);
+    if (handle == NULL) {
+	/*
+	 * Let the OS loader examine the binary search path for whatever
+	 * string the user gave us which hopefully refers to a file on the
+	 * binary path.
+	 */
+
+	Tcl_DString ds;
+	const char *fileName = Tcl_GetString(pathPtr);
+
+	native = Tcl_UtfToExternalDString(NULL, fileName, -1, &ds);
+	/*
+	 * Use (RTLD_NOW|RTLD_LOCAL) as default, see [Bug #3216070]
+	 */
+	handle = dlopen(native, dlopenflags);
+	Tcl_DStringFree(&ds);
+    }
+
+    if (handle == NULL) {
+	/*
+	 * Write the string to a variable first to work around a compiler bug
+	 * in the Sun Forte 6 compiler. [Bug 1503729]
+	 */
+
+	const char *errorStr = dlerror();
+
+	if (interp) {
+	    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+		    "couldn't load file \"%s\": %s",
+		    Tcl_GetString(pathPtr), errorStr));
+	}
+	return TCL_ERROR;
+    }
+    newHandle = ckalloc(sizeof(*newHandle));
+    newHandle->clientData = handle;
+    newHandle->findSymbolProcPtr = &FindSymbol;
+    newHandle->unloadFileProcPtr = &UnloadFile;
+    *unloadProcPtr = &UnloadFile;
+    *loadHandle = newHandle;
+
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * FindSymbol --
+ *
+ *	Looks up a symbol, by name, through a handle associated with a
+ *	previously loaded piece of code (shared library).
+ *
+ * Results:
+ *	Returns a pointer to the function associated with 'symbol' if it is
+ *	found. Otherwise returns NULL and may leave an error message in the
+ *	interp's result.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void *
+FindSymbol(
+    Tcl_Interp *interp,		/* Place to put error messages. */
+    Tcl_LoadHandle loadHandle,	/* Value from TcpDlopen(). */
+    const char *symbol)		/* Symbol to look up. */
+{
+    const char *native;		/* Name of the library to be loaded, in
+				 * system encoding */
+    Tcl_DString newName, ds;	/* Buffers for converting the name to
+				 * system encoding and prepending an
+				 * underscore*/
+    void *handle = (void *) loadHandle->clientData;
+				/* Native handle to the loaded library */
+    void *proc;			/* Address corresponding to the resolved
+				 * symbol */
+
+    /*
+     * Some platforms still add an underscore to the beginning of symbol
+     * names. If we can't find a name without an underscore, try again with
+     * the underscore.
+     */
+
+    native = Tcl_UtfToExternalDString(NULL, symbol, -1, &ds);
+    proc = dlsym(handle, native);	/* INTL: Native. */
+    if (proc == NULL) {
+	Tcl_DStringInit(&newName);
+	TclDStringAppendLiteral(&newName, "_");
+	native = Tcl_DStringAppend(&newName, native, -1);
+	proc = dlsym(handle, native);	/* INTL: Native. */
+	Tcl_DStringFree(&newName);
+    }
+    Tcl_DStringFree(&ds);
+    if (proc == NULL) {
+	const char *errorStr = dlerror();
+
+	if (interp) {
+	    if (!errorStr) {
+		errorStr = "unknown";
+	    }
+	    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+		    "cannot find symbol \"%s\": %s", symbol, errorStr));
+	    Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "LOAD_SYMBOL", symbol,
+		    NULL);
+	}
+    }
+    return proc;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * UnloadFile --
+ *
+ *	Unloads a dynamically loaded binary code file from memory. Code
+ *	pointers in the formerly loaded file are no longer valid after calling
+ *	this function.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Code removed from memory.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+UnloadFile(
+    Tcl_LoadHandle loadHandle)	/* loadHandle returned by a previous call to
+				 * TclpDlopen(). The loadHandle is a token
+				 * that represents the loaded file. */
+{
+    void *handle = loadHandle->clientData;
+
+    dlclose(handle);
+    ckfree(loadHandle);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclGuessPackageName --
+ *
+ *	If the "load" command is invoked without providing a package name,
+ *	this procedure is invoked to try to figure it out.
+ *
+ * Results:
+ *	Always returns 0 to indicate that we couldn't figure out a package
+ *	name; generic code will then try to guess the package from the file
+ *	name. A return value of 1 would have meant that we figured out the
+ *	package name and put it in bufPtr.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclGuessPackageName(
+    const char *fileName,	/* Name of file containing package (already
+				 * translated to local form if needed). */
+    Tcl_DString *bufPtr)	/* Initialized empty dstring. Append package
+				 * name to this if possible. */
+{
+    return 0;
+}
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/tcl8.6/unix/tclLoadDyld.c b/tcl8.6/unix/tclLoadDyld.c
new file mode 100644
index 0000000..e998bf9
--- /dev/null
+++ b/tcl8.6/unix/tclLoadDyld.c
@@ -0,0 +1,719 @@
+/*
+ * tclLoadDyld.c --
+ *
+ *	This procedure provides a version of the TclLoadFile that works with
+ *	Apple's dyld dynamic loading.
+ *	Original version of his file (superseded long ago) provided by
+ *	Wilfredo Sanchez (wsanchez@apple.com).
+ *
+ * Copyright (c) 1995 Apple Computer, Inc.
+ * Copyright (c) 2001-2007 Daniel A. Steffen <das@users.sourceforge.net>
+ *
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ */
+
+#include "tclInt.h"
+
+#ifndef MODULE_SCOPE
+#   define MODULE_SCOPE extern
+#endif
+
+/*
+ * Use preferred dlfcn API on 10.4 and later
+ */
+
+#ifndef TCL_DYLD_USE_DLFCN
+#   ifdef NO_DLFCN_H
+#	define TCL_DYLD_USE_DLFCN 0
+#   else
+#	define TCL_DYLD_USE_DLFCN 1
+#   endif
+#endif
+
+/*
+ * Use deprecated NSModule API only to support 10.3 and earlier:
+ */
+
+#ifndef TCL_DYLD_USE_NSMODULE
+#   define TCL_DYLD_USE_NSMODULE 0
+#endif
+
+/*
+ * Use includes for the API we're using.
+ */
+
+#if TCL_DYLD_USE_DLFCN
+#   include <dlfcn.h>
+#endif /* TCL_DYLD_USE_DLFCN */
+
+#if TCL_DYLD_USE_NSMODULE || defined(TCL_LOAD_FROM_MEMORY)
+#if defined (__clang__) || ((__GNUC__)  && ((__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ > 5))))
+#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
+#endif
+#include <mach-o/dyld.h>
+#include <mach-o/fat.h>
+#include <mach-o/swap.h>
+#include <mach-o/arch.h>
+#include <libkern/OSByteOrder.h>
+#include <mach/mach.h>
+
+typedef struct Tcl_DyldModuleHandle {
+    struct Tcl_DyldModuleHandle *nextPtr;
+    NSModule module;
+} Tcl_DyldModuleHandle;
+#endif /* TCL_DYLD_USE_NSMODULE || TCL_LOAD_FROM_MEMORY */
+
+typedef struct {
+    void *dlHandle;
+#if TCL_DYLD_USE_NSMODULE || defined(TCL_LOAD_FROM_MEMORY)
+    const struct mach_header *dyldLibHeader;
+    Tcl_DyldModuleHandle *modulePtr;
+#endif
+} Tcl_DyldLoadHandle;
+
+#if TCL_DYLD_USE_DLFCN || defined(TCL_LOAD_FROM_MEMORY)
+MODULE_SCOPE long	tclMacOSXDarwinRelease;
+#endif
+
+/*
+ * Static functions defined in this file.
+ */
+
+static void *		FindSymbol(Tcl_Interp *interp,
+			    Tcl_LoadHandle loadHandle, const char *symbol);
+static void		UnloadFile(Tcl_LoadHandle handle);
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * DyldOFIErrorMsg --
+ *
+ *	Converts a numerical NSObjectFileImage error into an error message
+ *	string.
+ *
+ * Results:
+ *	Error message string.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+#if TCL_DYLD_USE_NSMODULE || defined(TCL_LOAD_FROM_MEMORY)
+static const char *
+DyldOFIErrorMsg(
+    int err)
+{
+    switch(err) {
+    case NSObjectFileImageSuccess:
+	return NULL;
+    case NSObjectFileImageFailure:
+	return "object file setup failure";
+    case NSObjectFileImageInappropriateFile:
+	return "not a Mach-O MH_BUNDLE file";
+    case NSObjectFileImageArch:
+	return "no object for this architecture";
+    case NSObjectFileImageFormat:
+	return "bad object file format";
+    case NSObjectFileImageAccess:
+	return "can't read object file";
+    default:
+	return "unknown error";
+    }
+}
+#endif /* TCL_DYLD_USE_NSMODULE || TCL_LOAD_FROM_MEMORY */
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclpDlopen --
+ *
+ *	Dynamically loads a binary code file into memory and returns a handle
+ *	to the new code.
+ *
+ * Results:
+ *	A standard Tcl completion code. If an error occurs, an error message
+ *	is left in the interpreter's result.
+ *
+ * Side effects:
+ *	New code suddenly appears in memory.
+ *
+ *----------------------------------------------------------------------
+ */
+
+MODULE_SCOPE int
+TclpDlopen(
+    Tcl_Interp *interp,		/* Used for error reporting. */
+    Tcl_Obj *pathPtr,		/* Name of the file containing the desired
+				 * code (UTF-8). */
+    Tcl_LoadHandle *loadHandle, /* Filled with token for dynamically loaded
+				 * file which will be passed back to
+				 * (*unloadProcPtr)() to unload the file. */
+    Tcl_FSUnloadFileProc **unloadProcPtr,
+				/* Filled with address of Tcl_FSUnloadFileProc
+				 * function which should be used for this
+				 * file. */
+    int flags)
+{
+    Tcl_DyldLoadHandle *dyldLoadHandle;
+    Tcl_LoadHandle newHandle;
+    void *dlHandle = NULL;
+#if TCL_DYLD_USE_NSMODULE || defined(TCL_LOAD_FROM_MEMORY)
+    const struct mach_header *dyldLibHeader = NULL;
+    Tcl_DyldModuleHandle *modulePtr = NULL;
+#endif
+#if TCL_DYLD_USE_NSMODULE
+    NSLinkEditErrors editError;
+    int errorNumber;
+    const char *errorName, *objFileImageErrMsg = NULL;
+#endif /* TCL_DYLD_USE_NSMODULE */
+    const char *errMsg = NULL;
+    int result;
+    Tcl_DString ds;
+    const char *nativePath, *nativeFileName = NULL;
+#if TCL_DYLD_USE_DLFCN
+    int dlopenflags = 0;
+#endif /* TCL_DYLD_USE_DLFCN */
+
+    /*
+     * First try the full path the user gave us. This is particularly
+     * important if the cwd is inside a vfs, and we are trying to load using a
+     * relative path.
+     */
+
+    nativePath = Tcl_FSGetNativePath(pathPtr);
+    nativeFileName = Tcl_UtfToExternalDString(NULL, Tcl_GetString(pathPtr),
+	    -1, &ds);
+
+#if TCL_DYLD_USE_DLFCN
+    /*
+     * Use (RTLD_NOW|RTLD_LOCAL) as default, see [Bug #3216070]
+     */
+
+    if (flags & TCL_LOAD_GLOBAL) {
+    	dlopenflags |= RTLD_GLOBAL;
+    } else {
+    	dlopenflags |= RTLD_LOCAL;
+    }
+    if (flags & TCL_LOAD_LAZY) {
+    	dlopenflags |= RTLD_LAZY;
+    } else {
+    	dlopenflags |= RTLD_NOW;
+    }
+    dlHandle = dlopen(nativePath, dlopenflags);
+    if (!dlHandle) {
+	/*
+	 * Let the OS loader examine the binary search path for whatever string
+	 * the user gave us which hopefully refers to a file on the binary
+	 * path.
+	 */
+
+	dlHandle = dlopen(nativeFileName, dlopenflags);
+	if (!dlHandle) {
+	    errMsg = dlerror();
+	}
+    }
+#endif /* TCL_DYLD_USE_DLFCN */
+
+    if (!dlHandle) {
+#if TCL_DYLD_USE_NSMODULE
+	dyldLibHeader = NSAddImage(nativePath,
+		NSADDIMAGE_OPTION_RETURN_ON_ERROR);
+	if (!dyldLibHeader) {
+	    NSLinkEditError(&editError, &errorNumber, &errorName, &errMsg);
+	    if (editError == NSLinkEditFileAccessError) {
+		/*
+		 * The requested file was not found. Let the OS loader examine
+		 * the binary search path for whatever string the user gave us
+		 * which hopefully refers to a file on the binary path.
+		 */
+
+		dyldLibHeader = NSAddImage(nativeFileName,
+			NSADDIMAGE_OPTION_WITH_SEARCHING |
+			NSADDIMAGE_OPTION_RETURN_ON_ERROR);
+		if (!dyldLibHeader) {
+		    NSLinkEditError(&editError, &errorNumber, &errorName,
+			    &errMsg);
+		}
+	    } else if ((editError == NSLinkEditFileFormatError
+		    && errorNumber == EBADMACHO)
+		    || editError == NSLinkEditOtherError){
+		NSObjectFileImageReturnCode err;
+		NSObjectFileImage dyldObjFileImage;
+		NSModule module;
+
+		/*
+		 * The requested file was found but was not of type MH_DYLIB,
+		 * attempt to load it as a MH_BUNDLE.
+		 */
+
+		err = NSCreateObjectFileImageFromFile(nativePath,
+			&dyldObjFileImage);
+		if (err == NSObjectFileImageSuccess && dyldObjFileImage) {
+		    int nsflags = NSLINKMODULE_OPTION_RETURN_ON_ERROR;
+		    if (!(flags & 1)) nsflags |= NSLINKMODULE_OPTION_PRIVATE;
+		    if (!(flags & 2)) nsflags |= NSLINKMODULE_OPTION_BINDNOW;
+		    module = NSLinkModule(dyldObjFileImage, nativePath, nsflags);
+		    NSDestroyObjectFileImage(dyldObjFileImage);
+		    if (module) {
+			modulePtr = ckalloc(sizeof(Tcl_DyldModuleHandle));
+			modulePtr->module = module;
+			modulePtr->nextPtr = NULL;
+		    } else {
+			NSLinkEditError(&editError, &errorNumber, &errorName,
+				&errMsg);
+		    }
+		} else {
+		    objFileImageErrMsg = DyldOFIErrorMsg(err);
+		}
+	    }
+	}
+#endif /* TCL_DYLD_USE_NSMODULE */
+    }
+
+    if (dlHandle
+#if TCL_DYLD_USE_NSMODULE
+	    || dyldLibHeader || modulePtr
+#endif /* TCL_DYLD_USE_NSMODULE */
+    ) {
+	dyldLoadHandle = ckalloc(sizeof(Tcl_DyldLoadHandle));
+	dyldLoadHandle->dlHandle = dlHandle;
+#if TCL_DYLD_USE_NSMODULE || defined(TCL_LOAD_FROM_MEMORY)
+	dyldLoadHandle->dyldLibHeader = dyldLibHeader;
+	dyldLoadHandle->modulePtr = modulePtr;
+#endif /* TCL_DYLD_USE_NSMODULE || TCL_LOAD_FROM_MEMORY */
+	newHandle = ckalloc(sizeof(*newHandle));
+	newHandle->clientData = dyldLoadHandle;
+	newHandle->findSymbolProcPtr = &FindSymbol;
+	newHandle->unloadFileProcPtr = &UnloadFile;
+	*unloadProcPtr = &UnloadFile;
+	*loadHandle = newHandle;
+	result = TCL_OK;
+    } else {
+	Tcl_Obj *errObj = Tcl_NewObj();
+
+	if (errMsg != NULL) {
+	    Tcl_AppendToObj(errObj, errMsg, -1);
+	}
+#if TCL_DYLD_USE_NSMODULE
+	if (objFileImageErrMsg) {
+	    Tcl_AppendPrintfToObj(errObj,
+		    "\nNSCreateObjectFileImageFromFile() error: %s",
+		    objFileImageErrMsg);
+	}
+#endif /* TCL_DYLD_USE_NSMODULE */
+	Tcl_SetObjResult(interp, errObj);
+	result = TCL_ERROR;
+    }
+
+    Tcl_DStringFree(&ds);
+    return result;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * FindSymbol --
+ *
+ *	Looks up a symbol, by name, through a handle associated with a
+ *	previously loaded piece of code (shared library).
+ *
+ * Results:
+ *	Returns a pointer to the function associated with 'symbol' if it is
+ *	found. Otherwise returns NULL and may leave an error message in the
+ *	interp's result.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void *
+FindSymbol(
+    Tcl_Interp *interp,		/* For error reporting. */
+    Tcl_LoadHandle loadHandle,	/* Handle from TclpDlopen. */
+    const char *symbol)		/* Symbol name to look up. */
+{
+    Tcl_DyldLoadHandle *dyldLoadHandle = loadHandle->clientData;
+    Tcl_PackageInitProc *proc = NULL;
+    const char *errMsg = NULL;
+    Tcl_DString ds;
+    const char *native;
+
+    native = Tcl_UtfToExternalDString(NULL, symbol, -1, &ds);
+    if (dyldLoadHandle->dlHandle) {
+#if TCL_DYLD_USE_DLFCN
+	proc = dlsym(dyldLoadHandle->dlHandle, native);
+	if (!proc) {
+	    errMsg = dlerror();
+	}
+#endif /* TCL_DYLD_USE_DLFCN */
+    } else {
+#if TCL_DYLD_USE_NSMODULE || defined(TCL_LOAD_FROM_MEMORY)
+	NSSymbol nsSymbol = NULL;
+	Tcl_DString newName;
+
+	/*
+	 * dyld adds an underscore to the beginning of symbol names.
+	 */
+
+	Tcl_DStringInit(&newName);
+	TclDStringAppendLiteral(&newName, "_");
+	native = Tcl_DStringAppend(&newName, native, -1);
+	if (dyldLoadHandle->dyldLibHeader) {
+	    nsSymbol = NSLookupSymbolInImage(dyldLoadHandle->dyldLibHeader,
+		    native, NSLOOKUPSYMBOLINIMAGE_OPTION_BIND_NOW |
+		    NSLOOKUPSYMBOLINIMAGE_OPTION_RETURN_ON_ERROR);
+	    if (nsSymbol) {
+		/*
+		 * Until dyld supports unloading of MY_DYLIB binaries, the
+		 * following is not needed.
+		 */
+
+#ifdef DYLD_SUPPORTS_DYLIB_UNLOADING
+		NSModule module = NSModuleForSymbol(nsSymbol);
+		Tcl_DyldModuleHandle *modulePtr = dyldLoadHandle->modulePtr;
+
+		while (modulePtr != NULL) {
+		    if (module == modulePtr->module) {
+			break;
+		    }
+		    modulePtr = modulePtr->nextPtr;
+		}
+		if (modulePtr == NULL) {
+		    modulePtr = ckalloc(sizeof(Tcl_DyldModuleHandle));
+		    modulePtr->module = module;
+		    modulePtr->nextPtr = dyldLoadHandle->modulePtr;
+		    dyldLoadHandle->modulePtr = modulePtr;
+		}
+#endif /* DYLD_SUPPORTS_DYLIB_UNLOADING */
+	    } else {
+		NSLinkEditErrors editError;
+		int errorNumber;
+		const char *errorName;
+
+		NSLinkEditError(&editError, &errorNumber, &errorName, &errMsg);
+	    }
+	} else if (dyldLoadHandle->modulePtr) {
+	    nsSymbol = NSLookupSymbolInModule(
+		    dyldLoadHandle->modulePtr->module, native);
+	}
+	if (nsSymbol) {
+	    proc = NSAddressOfSymbol(nsSymbol);
+	}
+	Tcl_DStringFree(&newName);
+#endif /* TCL_DYLD_USE_NSMODULE */
+    }
+    Tcl_DStringFree(&ds);
+    if (errMsg && (interp != NULL)) {
+	Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+		"cannot find symbol \"%s\": %s", symbol, errMsg));
+	Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "LOAD_SYMBOL", symbol,
+		NULL);
+    }
+    return proc;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * UnloadFile --
+ *
+ *	Unloads a dynamically loaded binary code file from memory. Code
+ *	pointers in the formerly loaded file are no longer valid after calling
+ *	this function.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Code dissapears from memory. Note that dyld currently only supports
+ *	unloading of binaries of type MH_BUNDLE loaded with NSLinkModule() in
+ *	TclpDlopen() above.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+UnloadFile(
+    Tcl_LoadHandle loadHandle)	/* loadHandle returned by a previous call to
+				 * TclpDlopen(). The loadHandle is a token
+				 * that represents the loaded file. */
+{
+    Tcl_DyldLoadHandle *dyldLoadHandle = loadHandle->clientData;
+
+    if (dyldLoadHandle->dlHandle) {
+#if TCL_DYLD_USE_DLFCN
+	(void) dlclose(dyldLoadHandle->dlHandle);
+#endif /* TCL_DYLD_USE_DLFCN */
+    } else {
+#if TCL_DYLD_USE_NSMODULE || defined(TCL_LOAD_FROM_MEMORY)
+	Tcl_DyldModuleHandle *modulePtr = dyldLoadHandle->modulePtr;
+
+	while (modulePtr != NULL) {
+	    void *ptr = modulePtr;
+
+	    (void) NSUnLinkModule(modulePtr->module,
+		    NSUNLINKMODULE_OPTION_RESET_LAZY_REFERENCES);
+	    modulePtr = modulePtr->nextPtr;
+	    ckfree(ptr);
+	}
+#endif /* TCL_DYLD_USE_NSMODULE */
+    }
+    ckfree(dyldLoadHandle);
+    ckfree(loadHandle);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclGuessPackageName --
+ *
+ *	If the "load" command is invoked without providing a package name,
+ *	this procedure is invoked to try to figure it out.
+ *
+ * Results:
+ *	Always returns 0 to indicate that we couldn't figure out a package
+ *	name; generic code will then try to guess the package from the file
+ *	name. A return value of 1 would have meant that we figured out the
+ *	package name and put it in bufPtr.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclGuessPackageName(
+    const char *fileName,	/* Name of file containing package (already
+				 * translated to local form if needed). */
+    Tcl_DString *bufPtr)	/* Initialized empty dstring. Append package
+				 * name to this if possible. */
+{
+    return 0;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclpLoadMemoryGetBuffer --
+ *
+ *	Allocate a buffer that can be used with TclpLoadMemory() below.
+ *
+ * Results:
+ *	Pointer to allocated buffer or NULL if an error occurs.
+ *
+ * Side effects:
+ *	Buffer is allocated.
+ *
+ *----------------------------------------------------------------------
+ */
+
+#ifdef TCL_LOAD_FROM_MEMORY
+MODULE_SCOPE void *
+TclpLoadMemoryGetBuffer(
+    Tcl_Interp *interp,		/* Used for error reporting. */
+    int size)			/* Size of desired buffer. */
+{
+    void *buffer = NULL;
+
+    /*
+     * NSCreateObjectFileImageFromMemory is available but always fails
+     * prior to Darwin 7.
+     */
+    if (tclMacOSXDarwinRelease >= 7) {
+	/*
+	 * We must allocate the buffer using vm_allocate, because
+	 * NSCreateObjectFileImageFromMemory will dispose of it using
+	 * vm_deallocate.
+	 */
+
+	if (vm_allocate(mach_task_self(), (vm_address_t *) &buffer, size, 1)) {
+	    buffer = NULL;
+	}
+    }
+    return buffer;
+}
+#endif /* TCL_LOAD_FROM_MEMORY */
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclpLoadMemory --
+ *
+ *	Dynamically loads binary code file from memory and returns a handle to
+ *	the new code.
+ *
+ * Results:
+ *	A standard Tcl completion code. If an error occurs, an error message
+ *	is left in the interpreter's result.
+ *
+ * Side effects:
+ *	New code is loaded from memory.
+ *
+ *----------------------------------------------------------------------
+ */
+
+#ifdef TCL_LOAD_FROM_MEMORY
+MODULE_SCOPE int
+TclpLoadMemory(
+    Tcl_Interp *interp,		/* Used for error reporting. */
+    void *buffer,		/* Buffer containing the desired code
+				 * (allocated with TclpLoadMemoryGetBuffer). */
+    int size,			/* Allocation size of buffer. */
+    int codeSize,		/* Size of code data read into buffer or -1 if
+				 * an error occurred and the buffer should
+				 * just be freed. */
+    Tcl_LoadHandle *loadHandle, /* Filled with token for dynamically loaded
+				 * file which will be passed back to
+				 * (*unloadProcPtr)() to unload the file. */
+    Tcl_FSUnloadFileProc **unloadProcPtr,
+				/* Filled with address of Tcl_FSUnloadFileProc
+				 * function which should be used for this
+				 * file. */
+    int flags)
+{
+    Tcl_LoadHandle newHandle;
+    Tcl_DyldLoadHandle *dyldLoadHandle;
+    NSObjectFileImage dyldObjFileImage = NULL;
+    Tcl_DyldModuleHandle *modulePtr;
+    NSModule module;
+    const char *objFileImageErrMsg = NULL;
+    int nsflags = NSLINKMODULE_OPTION_RETURN_ON_ERROR;
+
+    /*
+     * Try to create an object file image that we can load from.
+     */
+
+    if (codeSize >= 0) {
+	NSObjectFileImageReturnCode err = NSObjectFileImageSuccess;
+	const struct fat_header *fh = buffer;
+	uint32_t ms = 0;
+#ifndef __LP64__
+	const struct mach_header *mh = NULL;
+#	define mh_size  sizeof(struct mach_header)
+#	define mh_magic MH_MAGIC
+#	define arch_abi 0
+#else
+	const struct mach_header_64 *mh = NULL;
+#	define mh_size  sizeof(struct mach_header_64)
+#	define mh_magic MH_MAGIC_64
+#	define arch_abi CPU_ARCH_ABI64
+#endif /*  __LP64__ */
+
+	if ((size_t) codeSize >= sizeof(struct fat_header)
+		&& fh->magic == OSSwapHostToBigInt32(FAT_MAGIC)) {
+	    uint32_t fh_nfat_arch = OSSwapBigToHostInt32(fh->nfat_arch);
+
+	    /*
+	     * Fat binary, try to find mach_header for our architecture
+	     */
+
+	    if ((size_t) codeSize >= sizeof(struct fat_header) +
+		    fh_nfat_arch * sizeof(struct fat_arch)) {
+		void *fatarchs = (char*)buffer + sizeof(struct fat_header);
+		const NXArchInfo *arch = NXGetLocalArchInfo();
+		struct fat_arch *fa;
+
+		if (fh->magic != FAT_MAGIC) {
+		    swap_fat_arch(fatarchs, fh_nfat_arch, arch->byteorder);
+		}
+		fa = NXFindBestFatArch(arch->cputype | arch_abi,
+			arch->cpusubtype, fatarchs, fh_nfat_arch);
+		if (fa) {
+		    mh = (void *)((char *) buffer + fa->offset);
+		    ms = fa->size;
+		} else {
+		    err = NSObjectFileImageInappropriateFile;
+		}
+		if (fh->magic != FAT_MAGIC) {
+		    swap_fat_arch(fatarchs, fh_nfat_arch, arch->byteorder);
+		}
+	    } else {
+		err = NSObjectFileImageInappropriateFile;
+	    }
+	} else {
+	    /*
+	     * Thin binary
+	     */
+
+	    mh = buffer;
+	    ms = codeSize;
+	}
+	if (ms && !(ms >= mh_size && mh->magic == mh_magic &&
+		 mh->filetype == MH_BUNDLE)) {
+	    err = NSObjectFileImageInappropriateFile;
+	}
+	if (err == NSObjectFileImageSuccess) {
+	    err = NSCreateObjectFileImageFromMemory(buffer, codeSize,
+		    &dyldObjFileImage);
+	    if (err != NSObjectFileImageSuccess) {
+		objFileImageErrMsg = DyldOFIErrorMsg(err);
+	    }
+	} else {
+	    objFileImageErrMsg = DyldOFIErrorMsg(err);
+	}
+    }
+
+    /*
+     * If it went wrong (or we were asked to just deallocate), get rid of the
+     * memory block and create an error message.
+     */
+
+    if (dyldObjFileImage == NULL) {
+	vm_deallocate(mach_task_self(), (vm_address_t) buffer, size);
+	if (objFileImageErrMsg != NULL) {
+	    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+		    "NSCreateObjectFileImageFromMemory() error: %s",
+		    objFileImageErrMsg));
+	}
+	return TCL_ERROR;
+    }
+
+    /*
+     * Extract the module we want from the image of the object file.
+     */
+
+    if (!(flags & 1)) nsflags |= NSLINKMODULE_OPTION_PRIVATE;
+    if (!(flags & 2)) nsflags |= NSLINKMODULE_OPTION_BINDNOW;
+    module = NSLinkModule(dyldObjFileImage, "[Memory Based Bundle]", nsflags);
+    NSDestroyObjectFileImage(dyldObjFileImage);
+    if (!module) {
+	NSLinkEditErrors editError;
+	int errorNumber;
+	const char *errorName, *errMsg;
+
+	NSLinkEditError(&editError, &errorNumber, &errorName, &errMsg);
+	Tcl_SetObjResult(interp, Tcl_NewStringObj(errMsg, -1));
+	return TCL_ERROR;
+    }
+
+    /*
+     * Stash the module reference within the load handle we create and return.
+     */
+
+    modulePtr = ckalloc(sizeof(Tcl_DyldModuleHandle));
+    modulePtr->module = module;
+    modulePtr->nextPtr = NULL;
+    dyldLoadHandle = ckalloc(sizeof(Tcl_DyldLoadHandle));
+    dyldLoadHandle->dlHandle = NULL;
+    dyldLoadHandle->dyldLibHeader = NULL;
+    dyldLoadHandle->modulePtr = modulePtr;
+    newHandle = ckalloc(sizeof(*newHandle));
+    newHandle->clientData = dyldLoadHandle;
+    newHandle->findSymbolProcPtr = &FindSymbol;
+    newHandle->unloadFileProcPtr = &UnloadFile;
+    *loadHandle = newHandle;
+    *unloadProcPtr = &UnloadFile;
+    return TCL_OK;
+}
+#endif /* TCL_LOAD_FROM_MEMORY */
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 79
+ * End:
+ */
diff --git a/tcl8.6/unix/tclLoadNext.c b/tcl8.6/unix/tclLoadNext.c
new file mode 100644
index 0000000..eb0affa
--- /dev/null
+++ b/tcl8.6/unix/tclLoadNext.c
@@ -0,0 +1,217 @@
+/*
+ * tclLoadNext.c --
+ *
+ *	This procedure provides a version of the TclLoadFile that works with
+ *	NeXTs rld_* dynamic loading. This file provided by Pedja Bogdanovich.
+ *
+ * Copyright (c) 1995-1997 Sun Microsystems, Inc.
+ *
+ * See the file "license.terms" for information on usage and redistribution
+ * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ */
+
+#include "tclInt.h"
+#include <mach-o/rld.h>
+#include <streams/streams.h>
+
+/* Static procedures defined within this file */
+
+static void *		FindSymbol(Tcl_Interp *interp,
+			    Tcl_LoadHandle loadHandle, const char* symbol);
+static void		UnloadFile(Tcl_LoadHandle loadHandle);
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclpDlopen --
+ *
+ *	Dynamically loads a binary code file into memory and returns a handle
+ *	to the new code.
+ *
+ * Results:
+ *	A standard Tcl completion code.  If an error occurs, an error message
+ *	is left in the interp's result.
+ *
+ * Side effects:
+ *	New code suddenly appears in memory.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclpDlopen(
+    Tcl_Interp *interp,		/* Used for error reporting. */
+    Tcl_Obj *pathPtr,		/* Name of the file containing the desired
+				 * code (UTF-8). */
+    Tcl_LoadHandle *loadHandle,	/* Filled with token for dynamically loaded
+				 * file which will be passed back to
+				 * (*unloadProcPtr)() to unload the file. */
+    Tcl_FSUnloadFileProc **unloadProcPtr,
+				/* Filled with address of Tcl_FSUnloadFileProc
+				 * function which should be used for this
+				 * file. */
+    int flags)
+{
+    Tcl_LoadHandle newHandle;
+    struct mach_header *header;
+    char *fileName;
+    char *files[2];
+    const char *native;
+    int result = 1;
+
+    NXStream *errorStream = NXOpenMemory(0,0,NX_READWRITE);
+
+    fileName = Tcl_GetString(pathPtr);
+
+    /*
+     * First try the full path the user gave us. This is particularly
+     * important if the cwd is inside a vfs, and we are trying to load using a
+     * relative path.
+     */
+
+    native = Tcl_FSGetNativePath(pathPtr);
+    files = {native,NULL};
+
+    result = rld_load(errorStream, &header, files, NULL);
+
+    if (!result) {
+	/*
+	 * Let the OS loader examine the binary search path for whatever
+	 * string the user gave us which hopefully refers to a file on the
+	 * binary path
+	 */
+
+	Tcl_DString ds;
+
+	native = Tcl_UtfToExternalDString(NULL, fileName, -1, &ds);
+	files = {native,NULL};
+	result = rld_load(errorStream, &header, files, NULL);
+	Tcl_DStringFree(&ds);
+    }
+
+    if (!result) {
+	char *data;
+	int len, maxlen;
+
+	NXGetMemoryBuffer(errorStream, &data, &len, &maxlen);
+	Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+		"couldn't load file \"%s\": %s", fileName, data));
+	NXCloseMemory(errorStream, NX_FREEBUFFER);
+	return TCL_ERROR;
+    }
+    NXCloseMemory(errorStream, NX_FREEBUFFER);
+
+    newHandle = ckalloc(sizeof(Tcl_LoadHandle));
+    newHandle->clientData = INT2PTR(1);
+    newHandle->findSymbolProcPtr = &FindSymbol;
+    newHandle->unloadFileProcPtr = &UnloadFile;
+    *loadHandle = newHandle;
+    *unloadProcPtr = &UnloadFile;
+
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * FindSymbol --
+ *
+ *	Looks up a symbol, by name, through a handle associated with a
+ *	previously loaded piece of code (shared library).
+ *
+ * Results:
+ *	Returns a pointer to the function associated with 'symbol' if it is
+ *	found. Otherwise returns NULL and may leave an error message in the
+ *	interp's result.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void *
+FindSymbol(
+    Tcl_Interp *interp,
+    Tcl_LoadHandle loadHandle,
+    const char *symbol)
+{
+    Tcl_PackageInitProc *proc = NULL;
+
+    if (symbol) {
+	char sym[strlen(symbol) + 2];
+
+	sym[0] = '_';
+	sym[1] = 0;
+	strcat(sym, symbol);
+	rld_lookup(NULL, sym, (unsigned long *) &proc);
+    }
+    if (proc == NULL && interp != NULL) {
+	Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+		"cannot find symbol \"%s\"", symbol));
+	Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "LOAD_SYMBOL", symbol, NULL);
+    }
+    return proc;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * UnloadFile --
+ *
+ *	Unloads a dynamically loaded binary code file from memory. Code
+ *	pointers in the formerly loaded file are no longer valid after calling
+ *	this function.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Does nothing.  Can anything be done?
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+UnloadFile(
+    Tcl_LoadHandle loadHandle)	/* loadHandle returned by a previous call to
+				 * TclpDlopen(). The loadHandle is a token
+				 * that represents the loaded file. */
+{
+    ckfree(loadHandle);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclGuessPackageName --
+ *
+ *	If the "load" command is invoked without providing a package name,
+ *	this procedure is invoked to try to figure it out.
+ *
+ * Results:
+ *	Always returns 0 to indicate that we couldn't figure out a package
+ *	name; generic code will then try to guess the package from the file
+ *	name. A return value of 1 would have meant that we figured out the
+ *	package name and put it in bufPtr.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclGuessPackageName(
+    const char *fileName,	/* Name of file containing package (already
+				 * translated to local form if needed). */
+    Tcl_DString *bufPtr)	/* Initialized empty dstring. Append package
+				 * name to this if possible. */
+{
+    return 0;
+}
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/tcl8.6/unix/tclLoadOSF.c b/tcl8.6/unix/tclLoadOSF.c
new file mode 100644
index 0000000..377ed28
--- /dev/null
+++ b/tcl8.6/unix/tclLoadOSF.c
@@ -0,0 +1,235 @@
+/*
+ * tclLoadOSF.c --
+ *
+ *	This function provides a version of the TclLoadFile that works under
+ *	OSF/1 1.0/1.1/1.2 and related systems, utilizing the old OSF/1
+ *	/sbin/loader and /usr/include/loader.h. OSF/1 versions from 1.3 and on
+ *	use ELF, rtld, and dlopen()[/usr/include/ldfcn.h].
+ *
+ *	This is useful for:
+ *		OSF/1 1.0, 1.1, 1.2 (from OSF)
+ *			includes: MK4 and AD1 (from OSF RI)
+ *		OSF/1 1.3 (from OSF) using ROSE
+ *		HP OSF/1 1.0 ("Acorn") using COFF
+ *
+ *	This is likely to be useful for:
+ *		Paragon OSF/1 (from Intel)
+ *		HI-OSF/1 (from Hitachi)
+ *
+ *	This is NOT to be used on:
+ *		Digitial Alpha OSF/1 systems
+ *		OSF/1 1.3 or later (from OSF) using ELF
+ *			includes: MK6, MK7, AD2, AD3 (from OSF RI)
+ *
+ *	This approach to things was utter @&^#; thankfully, OSF/1 eventually
+ *	supported dlopen().
+ *
+ *	John Robert LoVerso <loverso@freebsd.osf.org>
+ *
+ * Copyright (c) 1995-1997 Sun Microsystems, Inc.
+ *
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ */
+
+#include "tclInt.h"
+#include <sys/types.h>
+#include <loader.h>
+
+/*
+ * Static functions defined within this file.
+ */
+
+static void *		FindSymbol(Tcl_Interp *interp,
+			    Tcl_LoadHandle loadHandle, const char* symbol);
+static void		UnloadFile(Tcl_LoadHandle handle);
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclpDlopen --
+ *
+ *	Dynamically loads a binary code file into memory and returns a handle
+ *	to the new code.
+ *
+ * Results:
+ *	A standard Tcl completion code.  If an error occurs, an error message
+ *	is left in the interp's result.
+ *
+ * Side effects:
+ *	New code suddenly appears in memory.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclpDlopen(
+    Tcl_Interp *interp,		/* Used for error reporting. */
+    Tcl_Obj *pathPtr,		/* Name of the file containing the desired
+				 * code (UTF-8). */
+    Tcl_LoadHandle *loadHandle,	/* Filled with token for dynamically loaded
+				 * file which will be passed back to
+				 * (*unloadProcPtr)() to unload the file. */
+    Tcl_FSUnloadFileProc **unloadProcPtr,
+				/* Filled with address of Tcl_FSUnloadFileProc
+				 * function which should be used for this
+				 * file. */
+    int flags)
+{
+    Tcl_LoadHandle newHandle;
+    ldr_module_t lm;
+    char *pkg;
+    char *fileName = Tcl_GetString(pathPtr);
+    const char *native;
+
+    /*
+     * First try the full path the user gave us.  This is particularly
+     * important if the cwd is inside a vfs, and we are trying to load using a
+     * relative path.
+     */
+
+    native = Tcl_FSGetNativePath(pathPtr);
+    lm = (Tcl_PackageInitProc *) load(native, LDR_NOFLAGS);
+
+    if (lm == LDR_NULL_MODULE) {
+	/*
+	 * Let the OS loader examine the binary search path for whatever
+	 * string the user gave us which hopefully refers to a file on the
+	 * binary path
+	 */
+
+	Tcl_DString ds;
+
+	native = Tcl_UtfToExternalDString(NULL, fileName, -1, &ds);
+	lm = (Tcl_PackageInitProc *) load(native, LDR_NOFLAGS);
+	Tcl_DStringFree(&ds);
+    }
+
+    if (lm == LDR_NULL_MODULE) {
+	Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+		"couldn't load file \"%s\": %s",
+		fileName, Tcl_PosixError(interp)));
+	return TCL_ERROR;
+    }
+
+    *clientDataPtr = NULL;
+
+    /*
+     * My convention is to use a [OSF loader] package name the same as shlib,
+     * since the idiots never implemented ldr_lookup() and it is otherwise
+     * impossible to get a package name given a module.
+     *
+     * I build loadable modules with a makefile rule like
+     *		ld ... -export $@: -o $@ $(OBJS)
+     */
+
+    if ((pkg = strrchr(fileName, '/')) == NULL) {
+        pkg = fileName;
+    } else {
+	pkg++;
+    }
+    newHandle = ckalloc(sizeof(*newHandle));
+    newHandle->clientData = pkg;
+    newHandle->findSymbolProcPtr = &FindSymbol;
+    newHandle->unloadFileProcPtr = &UnloadFile;
+    *loadHandle = newHandle;
+    *unloadProcPtr = &UnloadFile;
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * FindSymbol --
+ *
+ *	Looks up a symbol, by name, through a handle associated with a
+ *	previously loaded piece of code (shared library).
+ *
+ * Results:
+ *	Returns a pointer to the function associated with 'symbol' if it is
+ *	found.  Otherwise returns NULL and may leave an error message in the
+ *	interp's result.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void *
+FindSymbol(
+    Tcl_Interp *interp,
+    Tcl_LoadHandle loadHandle,
+    const char *symbol)
+{
+    void *retval = ldr_lookup_package((char *) loadHandle, symbol);
+
+    if (retval == NULL && interp != NULL) {
+	Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+		"cannot find symbol \"%s\"", symbol));
+	Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "LOAD_SYMBOL", symbol, NULL);
+    }
+    return retval;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * UnloadFile --
+ *
+ *	Unloads a dynamically loaded binary code file from memory. Code
+ *	pointers in the formerly loaded file are no longer valid after calling
+ *	this function.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Does nothing.  Can anything be done?
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+UnloadFile(
+    Tcl_LoadHandle loadHandle)	/* loadHandle returned by a previous call to
+				 * TclpDlopen(). The loadHandle is a token
+				 * that represents the loaded file. */
+{
+    ckfree(loadHandle);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclGuessPackageName --
+ *
+ *	If the "load" command is invoked without providing a package name,
+ *	this function is invoked to try to figure it out.
+ *
+ * Results:
+ *	Always returns 0 to indicate that we couldn't figure out a package
+ *	name; generic code will then try to guess the package from the file
+ *	name.  A return value of 1 would have meant that we figured out the
+ *	package name and put it in bufPtr.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclGuessPackageName(
+    const char *fileName,	/* Name of file containing package (already
+				 * translated to local form if needed). */
+    Tcl_DString *bufPtr)	/* Initialized empty dstring. Append package
+				 * name to this if possible. */
+{
+    return 0;
+}
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/tcl8.6/unix/tclLoadShl.c b/tcl8.6/unix/tclLoadShl.c
new file mode 100644
index 0000000..4be3d7b
--- /dev/null
+++ b/tcl8.6/unix/tclLoadShl.c
@@ -0,0 +1,224 @@
+/*
+ * tclLoadShl.c --
+ *
+ *	This procedure provides a version of the TclLoadFile that works with
+ *	the "shl_load" and "shl_findsym" library procedures for dynamic
+ *	loading (e.g. for HP machines).
+ *
+ * Copyright (c) 1995-1997 Sun Microsystems, Inc.
+ *
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ */
+
+#include <dl.h>
+#include "tclInt.h"
+
+/*
+ * Static functions defined within this file.
+ */
+
+static void *		FindSymbol(Tcl_Interp *interp,
+			    Tcl_LoadHandle loadHandle, const char *symbol);
+static void		UnloadFile(Tcl_LoadHandle handle);
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclpDlopen --
+ *
+ *	Dynamically loads a binary code file into memory and returns a handle
+ *	to the new code.
+ *
+ * Results:
+ *	A standard Tcl completion code.  If an error occurs, an error message
+ *	is left in the interp's result.
+ *
+ * Side effects:
+ *	New code suddenly appears in memory.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclpDlopen(
+    Tcl_Interp *interp,		/* Used for error reporting. */
+    Tcl_Obj *pathPtr,		/* Name of the file containing the desired
+				 * code (UTF-8). */
+    Tcl_LoadHandle *loadHandle,	/* Filled with token for dynamically loaded
+				 * file which will be passed back to
+				 * (*unloadProcPtr)() to unload the file. */
+    Tcl_FSUnloadFileProc **unloadProcPtr,
+				/* Filled with address of Tcl_FSUnloadFileProc
+				 * function which should be used for this
+				 * file. */
+    int flags)
+{
+    shl_t handle;
+    Tcl_LoadHandle newHandle;
+    const char *native;
+    char *fileName = Tcl_GetString(pathPtr);
+
+    /*
+     * The flags below used to be BIND_IMMEDIATE; they were changed at the
+     * suggestion of Wolfgang Kechel (wolfgang@prs.de): "This enables
+     * verbosity for missing symbols when loading a shared lib and allows to
+     * load libtk8.0.sl into tclsh8.0 without problems.  In general, this
+     * delays resolving symbols until they are actually needed.  Shared libs
+     * do no longer need all libraries linked in when they are build."
+     */
+
+    /*
+     * First try the full path the user gave us.  This is particularly
+     * important if the cwd is inside a vfs, and we are trying to load using a
+     * relative path.
+     */
+
+    native = Tcl_FSGetNativePath(pathPtr);
+    handle = shl_load(native, BIND_DEFERRED|BIND_VERBOSE, 0L);
+
+    if (handle == NULL) {
+	/*
+	 * Let the OS loader examine the binary search path for whatever
+	 * string the user gave us which hopefully refers to a file on the
+	 * binary path.
+	 */
+
+	Tcl_DString ds;
+
+	native = Tcl_UtfToExternalDString(NULL, fileName, -1, &ds);
+	handle = shl_load(native, BIND_DEFERRED|BIND_VERBOSE|DYNAMIC_PATH, 0L);
+	Tcl_DStringFree(&ds);
+    }
+
+    if (handle == NULL) {
+	Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+		"couldn't load file \"%s\": %s",
+		fileName, Tcl_PosixError(interp)));
+	return TCL_ERROR;
+    }
+    newHandle = ckalloc(sizeof(*newHandle));
+    newHandle->clientData = handle;
+    newHandle->findSymbolProcPtr = &FindSymbol;
+    newHandle->unloadFileProcPtr = *unloadProcPtr = &UnloadFile;
+    *loadHandle = newHandle;
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_FindSymbol --
+ *
+ *	Looks up a symbol, by name, through a handle associated with a
+ *	previously loaded piece of code (shared library).
+ *
+ * Results:
+ *	Returns a pointer to the function associated with 'symbol' if it is
+ *	found.  Otherwise returns NULL and may leave an error message in the
+ *	interp's result.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void*
+FindSymbol(
+    Tcl_Interp *interp,
+    Tcl_LoadHandle loadHandle,
+    const char *symbol)
+{
+    Tcl_DString newName;
+    Tcl_PackageInitProc *proc = NULL;
+    shl_t handle = (shl_t) loadHandle->clientData;
+
+    /*
+     * Some versions of the HP system software still use "_" at the beginning
+     * of exported symbols while others don't; try both forms of each name.
+     */
+
+    if (shl_findsym(&handle, symbol, (short) TYPE_PROCEDURE,
+	    (void *) &proc) != 0) {
+	Tcl_DStringInit(&newName);
+	TclDStringAppendLiteral(&newName, "_");
+	Tcl_DStringAppend(&newName, symbol, -1);
+	if (shl_findsym(&handle, Tcl_DStringValue(&newName),
+		(short) TYPE_PROCEDURE, (void *) &proc) != 0) {
+	    proc = NULL;
+	}
+	Tcl_DStringFree(&newName);
+    }
+    if (proc == NULL && interp != NULL) {
+	Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+		"cannot find symbol \"%s\": %s",
+		symbol, Tcl_PosixError(interp)));
+    }
+    return proc;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * UnloadFile --
+ *
+ *	Unloads a dynamically loaded binary code file from memory.  Code
+ *	pointers in the formerly loaded file are no longer valid after calling
+ *	this function.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Code removed from memory.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+UnloadFile(
+    Tcl_LoadHandle loadHandle)	/* loadHandle returned by a previous call to
+				 * TclpDlopen(). The loadHandle is a token
+				 * that represents the loaded file. */
+{
+    shl_t handle = (shl_t) loadHandle->clientData;
+
+    shl_unload(handle);
+    ckfree(loadHandle);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclGuessPackageName --
+ *
+ *	If the "load" command is invoked without providing a package name,
+ *	this procedure is invoked to try to figure it out.
+ *
+ * Results:
+ *	Always returns 0 to indicate that we couldn't figure out a package
+ *	name; generic code will then try to guess the package from the file
+ *	name. A return value of 1 would have meant that we figured out the
+ *	package name and put it in bufPtr.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclGuessPackageName(
+    const char *fileName,	/* Name of file containing package (already
+				 * translated to local form if needed). */
+    Tcl_DString *bufPtr)	/* Initialized empty dstring. Append package
+				 * name to this if possible. */
+{
+    return 0;
+}
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/tcl8.6/unix/tclUnixChan.c b/tcl8.6/unix/tclUnixChan.c
new file mode 100644
index 0000000..b4b2739
--- /dev/null
+++ b/tcl8.6/unix/tclUnixChan.c
@@ -0,0 +1,1937 @@
+/*
+ * tclUnixChan.c
+ *
+ *	Common channel driver for Unix channels based on files, command pipes
+ *	and TCP sockets.
+ *
+ * Copyright (c) 1995-1997 Sun Microsystems, Inc.
+ * Copyright (c) 1998-1999 by Scriptics Corporation.
+ *
+ * See the file "license.terms" for information on usage and redistribution
+ * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ */
+
+#include "tclInt.h"	/* Internal definitions for Tcl. */
+#include "tclIO.h"	/* To get Channel type declaration. */
+
+#undef SUPPORTS_TTY
+#if defined(HAVE_TERMIOS_H)
+#   define SUPPORTS_TTY 1
+#   include <termios.h>
+#   ifdef HAVE_SYS_IOCTL_H
+#	include <sys/ioctl.h>
+#   endif /* HAVE_SYS_IOCTL_H */
+#   ifdef HAVE_SYS_MODEM_H
+#	include <sys/modem.h>
+#   endif /* HAVE_SYS_MODEM_H */
+
+#   ifdef FIONREAD
+#	define GETREADQUEUE(fd, int)	ioctl((fd), FIONREAD, &(int))
+#   elif defined(FIORDCHK)
+#	define GETREADQUEUE(fd, int)	int = ioctl((fd), FIORDCHK, NULL)
+#   else
+#       define GETREADQUEUE(fd, int)    int = 0
+#   endif
+
+#   ifdef TIOCOUTQ
+#	define GETWRITEQUEUE(fd, int)	ioctl((fd), TIOCOUTQ, &(int))
+#   else
+#	define GETWRITEQUEUE(fd, int)	int = 0
+#   endif
+
+#   if !defined(CRTSCTS) && defined(CNEW_RTSCTS)
+#	define CRTSCTS CNEW_RTSCTS
+#   endif /* !CRTSCTS&CNEW_RTSCTS */
+#   if !defined(PAREXT) && defined(CMSPAR)
+#	define PAREXT CMSPAR
+#   endif /* !PAREXT&&CMSPAR */
+
+#endif	/* HAVE_TERMIOS_H */
+
+/*
+ * Helper macros to make parts of this file clearer. The macros do exactly
+ * what they say on the tin. :-) They also only ever refer to their arguments
+ * once, and so can be used without regard to side effects.
+ */
+
+#define SET_BITS(var, bits)	((var) |= (bits))
+#define CLEAR_BITS(var, bits)	((var) &= ~(bits))
+
+/*
+ * This structure describes per-instance state of a file based channel.
+ */
+
+typedef struct FileState {
+    Tcl_Channel channel;	/* Channel associated with this file. */
+    int fd;			/* File handle. */
+    int validMask;		/* OR'ed combination of TCL_READABLE,
+				 * TCL_WRITABLE, or TCL_EXCEPTION: indicates
+				 * which operations are valid on the file. */
+} FileState;
+
+#ifdef SUPPORTS_TTY
+
+/*
+ * The following structure is used to set or get the serial port attributes in
+ * a platform-independant manner.
+ */
+
+typedef struct TtyAttrs {
+    int baud;
+    int parity;
+    int data;
+    int stop;
+} TtyAttrs;
+
+#endif	/* !SUPPORTS_TTY */
+
+#define UNSUPPORTED_OPTION(detail) \
+    if (interp) {							\
+	Tcl_SetObjResult(interp, Tcl_ObjPrintf(				\
+		"%s not supported for this platform", (detail)));	\
+	Tcl_SetErrorCode(interp, "TCL", "UNSUPPORTED", NULL);		\
+    }
+
+/*
+ * Static routines for this file:
+ */
+
+static int		FileBlockModeProc(ClientData instanceData, int mode);
+static int		FileCloseProc(ClientData instanceData,
+			    Tcl_Interp *interp);
+static int		FileGetHandleProc(ClientData instanceData,
+			    int direction, ClientData *handlePtr);
+static int		FileInputProc(ClientData instanceData, char *buf,
+			    int toRead, int *errorCode);
+static int		FileOutputProc(ClientData instanceData,
+			    const char *buf, int toWrite, int *errorCode);
+static int		FileSeekProc(ClientData instanceData, long offset,
+			    int mode, int *errorCode);
+static int		FileTruncateProc(ClientData instanceData,
+			    Tcl_WideInt length);
+static Tcl_WideInt	FileWideSeekProc(ClientData instanceData,
+			    Tcl_WideInt offset, int mode, int *errorCode);
+static void		FileWatchProc(ClientData instanceData, int mask);
+#ifdef SUPPORTS_TTY
+static void		TtyGetAttributes(int fd, TtyAttrs *ttyPtr);
+static int		TtyGetOptionProc(ClientData instanceData,
+			    Tcl_Interp *interp, const char *optionName,
+			    Tcl_DString *dsPtr);
+static int		TtyGetBaud(speed_t speed);
+static speed_t		TtyGetSpeed(int baud);
+static void		TtyInit(int fd);
+static void		TtyModemStatusStr(int status, Tcl_DString *dsPtr);
+static int		TtyParseMode(Tcl_Interp *interp, const char *mode,
+			    TtyAttrs *ttyPtr);
+static void		TtySetAttributes(int fd, TtyAttrs *ttyPtr);
+static int		TtySetOptionProc(ClientData instanceData,
+			    Tcl_Interp *interp, const char *optionName,
+			    const char *value);
+#endif	/* SUPPORTS_TTY */
+
+/*
+ * This structure describes the channel type structure for file based IO:
+ */
+
+static const Tcl_ChannelType fileChannelType = {
+    "file",			/* Type name. */
+    TCL_CHANNEL_VERSION_5,	/* v5 channel */
+    FileCloseProc,		/* Close proc. */
+    FileInputProc,		/* Input proc. */
+    FileOutputProc,		/* Output proc. */
+    FileSeekProc,		/* Seek proc. */
+    NULL,			/* Set option proc. */
+    NULL,			/* Get option proc. */
+    FileWatchProc,		/* Initialize notifier. */
+    FileGetHandleProc,		/* Get OS handles out of channel. */
+    NULL,			/* close2proc. */
+    FileBlockModeProc,		/* Set blocking or non-blocking mode.*/
+    NULL,			/* flush proc. */
+    NULL,			/* handler proc. */
+    FileWideSeekProc,		/* wide seek proc. */
+    NULL,
+    FileTruncateProc		/* truncate proc. */
+};
+
+#ifdef SUPPORTS_TTY
+/*
+ * This structure describes the channel type structure for serial IO.
+ * Note that this type is a subclass of the "file" type.
+ */
+
+static const Tcl_ChannelType ttyChannelType = {
+    "tty",			/* Type name. */
+    TCL_CHANNEL_VERSION_5,	/* v5 channel */
+    FileCloseProc,		/* Close proc. */
+    FileInputProc,		/* Input proc. */
+    FileOutputProc,		/* Output proc. */
+    NULL,			/* Seek proc. */
+    TtySetOptionProc,		/* Set option proc. */
+    TtyGetOptionProc,		/* Get option proc. */
+    FileWatchProc,		/* Initialize notifier. */
+    FileGetHandleProc,		/* Get OS handles out of channel. */
+    NULL,			/* close2proc. */
+    FileBlockModeProc,		/* Set blocking or non-blocking mode.*/
+    NULL,			/* flush proc. */
+    NULL,			/* handler proc. */
+    NULL,			/* wide seek proc. */
+    NULL,			/* thread action proc. */
+    NULL			/* truncate proc. */
+};
+#endif	/* SUPPORTS_TTY */
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * FileBlockModeProc --
+ *
+ *	Helper function to set blocking and nonblocking modes on a file based
+ *	channel. Invoked by generic IO level code.
+ *
+ * Results:
+ *	0 if successful, errno when failed.
+ *
+ * Side effects:
+ *	Sets the device into blocking or non-blocking mode.
+ *
+ *----------------------------------------------------------------------
+ */
+
+	/* ARGSUSED */
+static int
+FileBlockModeProc(
+    ClientData instanceData,	/* File state. */
+    int mode)			/* The mode to set. Can be TCL_MODE_BLOCKING
+				 * or TCL_MODE_NONBLOCKING. */
+{
+    FileState *fsPtr = instanceData;
+
+    if (TclUnixSetBlockingMode(fsPtr->fd, mode) < 0) {
+	return errno;
+    }
+
+    return 0;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * FileInputProc --
+ *
+ *	This function is invoked from the generic IO level to read input from
+ *	a file based channel.
+ *
+ * Results:
+ *	The number of bytes read is returned or -1 on error. An output
+ *	argument contains a POSIX error code if an error occurs, or zero.
+ *
+ * Side effects:
+ *	Reads input from the input device of the channel.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+FileInputProc(
+    ClientData instanceData,	/* File state. */
+    char *buf,			/* Where to store data read. */
+    int toRead,			/* How much space is available in the
+				 * buffer? */
+    int *errorCodePtr)		/* Where to store error code. */
+{
+    FileState *fsPtr = instanceData;
+    int bytesRead;		/* How many bytes were actually read from the
+				 * input device? */
+
+    *errorCodePtr = 0;
+
+    /*
+     * Assume there is always enough input available. This will block
+     * appropriately, and read will unblock as soon as a short read is
+     * possible, if the channel is in blocking mode. If the channel is
+     * nonblocking, the read will never block.
+     */
+
+    bytesRead = read(fsPtr->fd, buf, (size_t) toRead);
+    if (bytesRead > -1) {
+	return bytesRead;
+    }
+    *errorCodePtr = errno;
+    return -1;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * FileOutputProc--
+ *
+ *	This function is invoked from the generic IO level to write output to
+ *	a file channel.
+ *
+ * Results:
+ *	The number of bytes written is returned or -1 on error. An output
+ *	argument contains a POSIX error code if an error occurred, or zero.
+ *
+ * Side effects:
+ *	Writes output on the output device of the channel.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+FileOutputProc(
+    ClientData instanceData,	/* File state. */
+    const char *buf,		/* The data buffer. */
+    int toWrite,		/* How many bytes to write? */
+    int *errorCodePtr)		/* Where to store error code. */
+{
+    FileState *fsPtr = instanceData;
+    int written;
+
+    *errorCodePtr = 0;
+
+    if (toWrite == 0) {
+	/*
+	 * SF Tcl Bug 465765. Do not try to write nothing into a file. STREAM
+	 * based implementations will considers this as EOF (if there is a
+	 * pipe behind the file).
+	 */
+
+	return 0;
+    }
+    written = write(fsPtr->fd, buf, (size_t) toWrite);
+    if (written > -1) {
+	return written;
+    }
+    *errorCodePtr = errno;
+    return -1;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * FileCloseProc --
+ *
+ *	This function is called from the generic IO level to perform
+ *	channel-type-specific cleanup when a file based channel is closed.
+ *
+ * Results:
+ *	0 if successful, errno if failed.
+ *
+ * Side effects:
+ *	Closes the device of the channel.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+FileCloseProc(
+    ClientData instanceData,	/* File state. */
+    Tcl_Interp *interp)		/* For error reporting - unused. */
+{
+    FileState *fsPtr = instanceData;
+    int errorCode = 0;
+
+    Tcl_DeleteFileHandler(fsPtr->fd);
+
+    /*
+     * Do not close standard channels while in thread-exit.
+     */
+
+    if (!TclInThreadExit()
+	    || ((fsPtr->fd != 0) && (fsPtr->fd != 1) && (fsPtr->fd != 2))) {
+	if (close(fsPtr->fd) < 0) {
+	    errorCode = errno;
+	}
+    }
+    ckfree(fsPtr);
+    return errorCode;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * FileSeekProc --
+ *
+ *	This function is called by the generic IO level to move the access
+ *	point in a file based channel.
+ *
+ * Results:
+ *	-1 if failed, the new position if successful. An output argument
+ *	contains the POSIX error code if an error occurred, or zero.
+ *
+ * Side effects:
+ *	Moves the location at which the channel will be accessed in future
+ *	operations.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+FileSeekProc(
+    ClientData instanceData,	/* File state. */
+    long offset,		/* Offset to seek to. */
+    int mode,			/* Relative to where should we seek? Can be
+				 * one of SEEK_START, SEEK_SET or SEEK_END. */
+    int *errorCodePtr)		/* To store error code. */
+{
+    FileState *fsPtr = instanceData;
+    Tcl_WideInt oldLoc, newLoc;
+
+    /*
+     * Save our current place in case we need to roll-back the seek.
+     */
+
+    oldLoc = TclOSseek(fsPtr->fd, (Tcl_SeekOffset) 0, SEEK_CUR);
+    if (oldLoc == Tcl_LongAsWide(-1)) {
+	/*
+	 * Bad things are happening. Error out...
+	 */
+
+	*errorCodePtr = errno;
+	return -1;
+    }
+
+    newLoc = TclOSseek(fsPtr->fd, (Tcl_SeekOffset) offset, mode);
+
+    /*
+     * Check for expressability in our return type, and roll-back otherwise.
+     */
+
+    if (newLoc > Tcl_LongAsWide(INT_MAX)) {
+	*errorCodePtr = EOVERFLOW;
+	TclOSseek(fsPtr->fd, (Tcl_SeekOffset) oldLoc, SEEK_SET);
+	return -1;
+    } else {
+	*errorCodePtr = (newLoc == Tcl_LongAsWide(-1)) ? errno : 0;
+    }
+    return (int) Tcl_WideAsLong(newLoc);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * FileWideSeekProc --
+ *
+ *	This function is called by the generic IO level to move the access
+ *	point in a file based channel, with offsets expressed as wide
+ *	integers.
+ *
+ * Results:
+ *	-1 if failed, the new position if successful. An output argument
+ *	contains the POSIX error code if an error occurred, or zero.
+ *
+ * Side effects:
+ *	Moves the location at which the channel will be accessed in future
+ *	operations.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static Tcl_WideInt
+FileWideSeekProc(
+    ClientData instanceData,	/* File state. */
+    Tcl_WideInt offset,		/* Offset to seek to. */
+    int mode,			/* Relative to where should we seek? Can be
+				 * one of SEEK_START, SEEK_CUR or SEEK_END. */
+    int *errorCodePtr)		/* To store error code. */
+{
+    FileState *fsPtr = instanceData;
+    Tcl_WideInt newLoc;
+
+    newLoc = TclOSseek(fsPtr->fd, (Tcl_SeekOffset) offset, mode);
+
+    *errorCodePtr = (newLoc == -1) ? errno : 0;
+    return newLoc;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * FileWatchProc --
+ *
+ *	Initialize the notifier to watch the fd from this channel.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Sets up the notifier so that a future event on the channel will
+ *	be seen by Tcl.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+FileWatchProc(
+    ClientData instanceData,	/* The file state. */
+    int mask)			/* Events of interest; an OR-ed combination of
+				 * TCL_READABLE, TCL_WRITABLE and
+				 * TCL_EXCEPTION. */
+{
+    FileState *fsPtr = instanceData;
+
+    /*
+     * Make sure we only register for events that are valid on this file. Note
+     * that we are passing Tcl_NotifyChannel directly to Tcl_CreateFileHandler
+     * with the channel pointer as the client data.
+     */
+
+    mask &= fsPtr->validMask;
+    if (mask) {
+	Tcl_CreateFileHandler(fsPtr->fd, mask,
+		(Tcl_FileProc *) Tcl_NotifyChannel, fsPtr->channel);
+    } else {
+	Tcl_DeleteFileHandler(fsPtr->fd);
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * FileGetHandleProc --
+ *
+ *	Called from Tcl_GetChannelHandle to retrieve OS handles from a file
+ *	based channel.
+ *
+ * Results:
+ *	Returns TCL_OK with the fd in handlePtr, or TCL_ERROR if there is no
+ *	handle for the specified direction.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+FileGetHandleProc(
+    ClientData instanceData,	/* The file state. */
+    int direction,		/* TCL_READABLE or TCL_WRITABLE */
+    ClientData *handlePtr)	/* Where to store the handle. */
+{
+    FileState *fsPtr = instanceData;
+
+    if (direction & fsPtr->validMask) {
+	*handlePtr = INT2PTR(fsPtr->fd);
+	return TCL_OK;
+    }
+    return TCL_ERROR;
+}
+
+#ifdef SUPPORTS_TTY
+/*
+ *----------------------------------------------------------------------
+ *
+ * TtyModemStatusStr --
+ *
+ *	Converts a RS232 modem status list of readable flags
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+TtyModemStatusStr(
+    int status,			/* RS232 modem status */
+    Tcl_DString *dsPtr)		/* Where to store string */
+{
+#ifdef TIOCM_CTS
+    Tcl_DStringAppendElement(dsPtr, "CTS");
+    Tcl_DStringAppendElement(dsPtr, (status & TIOCM_CTS) ? "1" : "0");
+#endif /* TIOCM_CTS */
+#ifdef TIOCM_DSR
+    Tcl_DStringAppendElement(dsPtr, "DSR");
+    Tcl_DStringAppendElement(dsPtr, (status & TIOCM_DSR) ? "1" : "0");
+#endif /* TIOCM_DSR */
+#ifdef TIOCM_RNG
+    Tcl_DStringAppendElement(dsPtr, "RING");
+    Tcl_DStringAppendElement(dsPtr, (status & TIOCM_RNG) ? "1" : "0");
+#endif /* TIOCM_RNG */
+#ifdef TIOCM_CD
+    Tcl_DStringAppendElement(dsPtr, "DCD");
+    Tcl_DStringAppendElement(dsPtr, (status & TIOCM_CD) ? "1" : "0");
+#endif /* TIOCM_CD */
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TtySetOptionProc --
+ *
+ *	Sets an option on a channel.
+ *
+ * Results:
+ *	A standard Tcl result. Also sets the interp's result on error if
+ *	interp is not NULL.
+ *
+ * Side effects:
+ *	May modify an option on a device. Sets Error message if needed (by
+ *	calling Tcl_BadChannelOption).
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+TtySetOptionProc(
+    ClientData instanceData,	/* File state. */
+    Tcl_Interp *interp,		/* For error reporting - can be NULL. */
+    const char *optionName,	/* Which option to set? */
+    const char *value)		/* New value for option. */
+{
+    FileState *fsPtr = instanceData;
+    unsigned int len, vlen;
+    TtyAttrs tty;
+    int argc;
+    const char **argv;
+    struct termios iostate;
+
+    len = strlen(optionName);
+    vlen = strlen(value);
+
+    /*
+     * Option -mode baud,parity,databits,stopbits
+     */
+
+    if ((len > 2) && (strncmp(optionName, "-mode", len) == 0)) {
+	if (TtyParseMode(interp, value, &tty) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+
+	/*
+	 * system calls results should be checked there. - dl
+	 */
+
+	TtySetAttributes(fsPtr->fd, &tty);
+	return TCL_OK;
+    }
+
+
+    /*
+     * Option -handshake none|xonxoff|rtscts|dtrdsr
+     */
+
+    if ((len > 1) && (strncmp(optionName, "-handshake", len) == 0)) {
+	/*
+	 * Reset all handshake options. DTR and RTS are ON by default.
+	 */
+
+	tcgetattr(fsPtr->fd, &iostate);
+	CLEAR_BITS(iostate.c_iflag, IXON | IXOFF | IXANY);
+#ifdef CRTSCTS
+	CLEAR_BITS(iostate.c_cflag, CRTSCTS);
+#endif /* CRTSCTS */
+	if (Tcl_UtfNcasecmp(value, "NONE", vlen) == 0) {
+	    /*
+	     * Leave all handshake options disabled.
+	     */
+	} else if (Tcl_UtfNcasecmp(value, "XONXOFF", vlen) == 0) {
+	    SET_BITS(iostate.c_iflag, IXON | IXOFF | IXANY);
+	} else if (Tcl_UtfNcasecmp(value, "RTSCTS", vlen) == 0) {
+#ifdef CRTSCTS
+	    SET_BITS(iostate.c_cflag, CRTSCTS);
+#else /* !CRTSTS */
+	    UNSUPPORTED_OPTION("-handshake RTSCTS");
+	    return TCL_ERROR;
+#endif /* CRTSCTS */
+	} else if (Tcl_UtfNcasecmp(value, "DTRDSR", vlen) == 0) {
+	    UNSUPPORTED_OPTION("-handshake DTRDSR");
+	    return TCL_ERROR;
+	} else {
+	    if (interp) {
+		Tcl_SetObjResult(interp, Tcl_NewStringObj(
+			"bad value for -handshake: must be one of"
+			" xonxoff, rtscts, dtrdsr or none", -1));
+		Tcl_SetErrorCode(interp, "TCL", "OPERATION", "FCONFIGURE",
+			"VALUE", NULL);
+	    }
+	    return TCL_ERROR;
+	}
+	tcsetattr(fsPtr->fd, TCSADRAIN, &iostate);
+	return TCL_OK;
+    }
+
+    /*
+     * Option -xchar {\x11 \x13}
+     */
+
+    if ((len > 1) && (strncmp(optionName, "-xchar", len) == 0)) {
+	Tcl_DString ds;
+
+	if (Tcl_SplitList(interp, value, &argc, &argv) == TCL_ERROR) {
+	    return TCL_ERROR;
+	} else if (argc != 2) {
+	    if (interp) {
+		Tcl_SetObjResult(interp, Tcl_NewStringObj(
+			"bad value for -xchar: should be a list of"
+			" two elements", -1));
+		Tcl_SetErrorCode(interp, "TCL", "OPERATION", "FCONFIGURE",
+			"VALUE", NULL);
+	    }
+	    ckfree(argv);
+	    return TCL_ERROR;
+	}
+
+	tcgetattr(fsPtr->fd, &iostate);
+
+	Tcl_UtfToExternalDString(NULL, argv[0], -1, &ds);
+	iostate.c_cc[VSTART] = *(const cc_t *) Tcl_DStringValue(&ds);
+	TclDStringClear(&ds);
+
+	Tcl_UtfToExternalDString(NULL, argv[1], -1, &ds);
+	iostate.c_cc[VSTOP] = *(const cc_t *) Tcl_DStringValue(&ds);
+	Tcl_DStringFree(&ds);
+	ckfree(argv);
+
+	tcsetattr(fsPtr->fd, TCSADRAIN, &iostate);
+	return TCL_OK;
+    }
+
+    /*
+     * Option -timeout msec
+     */
+
+    if ((len > 2) && (strncmp(optionName, "-timeout", len) == 0)) {
+	int msec;
+
+	tcgetattr(fsPtr->fd, &iostate);
+	if (Tcl_GetInt(interp, value, &msec) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+	iostate.c_cc[VMIN] = 0;
+	iostate.c_cc[VTIME] = (msec==0) ? 0 : (msec<100) ? 1 : (msec+50)/100;
+	tcsetattr(fsPtr->fd, TCSADRAIN, &iostate);
+	return TCL_OK;
+    }
+
+    /*
+     * Option -ttycontrol {DTR 1 RTS 0 BREAK 0}
+     */
+    if ((len > 4) && (strncmp(optionName, "-ttycontrol", len) == 0)) {
+#if defined(TIOCMGET) && defined(TIOCMSET)
+	int i, control, flag;
+
+	if (Tcl_SplitList(interp, value, &argc, &argv) == TCL_ERROR) {
+	    return TCL_ERROR;
+	}
+	if ((argc % 2) == 1) {
+	    if (interp) {
+		Tcl_SetObjResult(interp, Tcl_NewStringObj(
+			"bad value for -ttycontrol: should be a list of"
+			" signal,value pairs", -1));
+		Tcl_SetErrorCode(interp, "TCL", "OPERATION", "FCONFIGURE",
+			"VALUE", NULL);
+	    }
+	    ckfree(argv);
+	    return TCL_ERROR;
+	}
+
+	ioctl(fsPtr->fd, TIOCMGET, &control);
+	for (i = 0; i < argc-1; i += 2) {
+	    if (Tcl_GetBoolean(interp, argv[i+1], &flag) == TCL_ERROR) {
+		ckfree(argv);
+		return TCL_ERROR;
+	    }
+	    if (Tcl_UtfNcasecmp(argv[i], "DTR", strlen(argv[i])) == 0) {
+		if (flag) {
+		    SET_BITS(control, TIOCM_DTR);
+		} else {
+		    CLEAR_BITS(control, TIOCM_DTR);
+		}
+	    } else if (Tcl_UtfNcasecmp(argv[i], "RTS", strlen(argv[i])) == 0) {
+		if (flag) {
+		    SET_BITS(control, TIOCM_RTS);
+		} else {
+		    CLEAR_BITS(control, TIOCM_RTS);
+		}
+	    } else if (Tcl_UtfNcasecmp(argv[i], "BREAK", strlen(argv[i])) == 0) {
+#if defined(TIOCSBRK) && defined(TIOCCBRK)
+		if (flag) {
+		    ioctl(fsPtr->fd, TIOCSBRK, NULL);
+		} else {
+		    ioctl(fsPtr->fd, TIOCCBRK, NULL);
+		}
+#else /* TIOCSBRK & TIOCCBRK */
+		UNSUPPORTED_OPTION("-ttycontrol BREAK");
+		ckfree(argv);
+		return TCL_ERROR;
+#endif /* TIOCSBRK & TIOCCBRK */
+	    } else {
+		if (interp) {
+		    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+			    "bad signal \"%s\" for -ttycontrol: must be"
+			    " DTR, RTS or BREAK", argv[i]));
+		    Tcl_SetErrorCode(interp, "TCL", "OPERATION", "FCONFIGURE",
+			"VALUE", NULL);
+		}
+		ckfree(argv);
+		return TCL_ERROR;
+	    }
+	} /* -ttycontrol options loop */
+
+	ioctl(fsPtr->fd, TIOCMSET, &control);
+	ckfree(argv);
+	return TCL_OK;
+#else /* TIOCMGET&TIOCMSET */
+	UNSUPPORTED_OPTION("-ttycontrol");
+#endif /* TIOCMGET&TIOCMSET */
+    }
+
+    return Tcl_BadChannelOption(interp, optionName,
+	    "mode handshake timeout ttycontrol xchar");
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TtyGetOptionProc --
+ *
+ *	Gets a mode associated with an IO channel. If the optionName arg is
+ *	non-NULL, retrieves the value of that option. If the optionName arg is
+ *	NULL, retrieves a list of alternating option names and values for the
+ *	given channel.
+ *
+ * Results:
+ *	A standard Tcl result. Also sets the supplied DString to the string
+ *	value of the option(s) returned.  Sets error message if needed
+ *	(by calling Tcl_BadChannelOption).
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+TtyGetOptionProc(
+    ClientData instanceData,	/* File state. */
+    Tcl_Interp *interp,		/* For error reporting - can be NULL. */
+    const char *optionName,	/* Option to get. */
+    Tcl_DString *dsPtr)		/* Where to store value(s). */
+{
+    FileState *fsPtr = instanceData;
+    unsigned int len;
+    char buf[3*TCL_INTEGER_SPACE + 16];
+    int valid = 0;		/* Flag if valid option parsed. */
+
+    if (optionName == NULL) {
+	len = 0;
+    } else {
+	len = strlen(optionName);
+    }
+    if (len == 0) {
+	Tcl_DStringAppendElement(dsPtr, "-mode");
+    }
+    if (len==0 || (len>2 && strncmp(optionName, "-mode", len)==0)) {
+	TtyAttrs tty;
+
+	valid = 1;
+	TtyGetAttributes(fsPtr->fd, &tty);
+	sprintf(buf, "%d,%c,%d,%d", tty.baud, tty.parity, tty.data, tty.stop);
+	Tcl_DStringAppendElement(dsPtr, buf);
+    }
+
+    /*
+     * Get option -xchar
+     */
+
+    if (len == 0) {
+	Tcl_DStringAppendElement(dsPtr, "-xchar");
+	Tcl_DStringStartSublist(dsPtr);
+    }
+    if (len==0 || (len>1 && strncmp(optionName, "-xchar", len)==0)) {
+	struct termios iostate;
+	Tcl_DString ds;
+
+	valid = 1;
+	tcgetattr(fsPtr->fd, &iostate);
+	Tcl_DStringInit(&ds);
+
+	Tcl_ExternalToUtfDString(NULL, (char *) &iostate.c_cc[VSTART], 1, &ds);
+	Tcl_DStringAppendElement(dsPtr, Tcl_DStringValue(&ds));
+	TclDStringClear(&ds);
+
+	Tcl_ExternalToUtfDString(NULL, (char *) &iostate.c_cc[VSTOP], 1, &ds);
+	Tcl_DStringAppendElement(dsPtr, Tcl_DStringValue(&ds));
+	Tcl_DStringFree(&ds);
+    }
+    if (len == 0) {
+	Tcl_DStringEndSublist(dsPtr);
+    }
+
+    /*
+     * Get option -queue
+     * Option is readonly and returned by [fconfigure chan -queue] but not
+     * returned by unnamed [fconfigure chan].
+     */
+
+    if ((len > 1) && (strncmp(optionName, "-queue", len) == 0)) {
+	int inQueue=0, outQueue=0, inBuffered, outBuffered;
+
+	valid = 1;
+	GETREADQUEUE(fsPtr->fd, inQueue);
+	GETWRITEQUEUE(fsPtr->fd, outQueue);
+	inBuffered = Tcl_InputBuffered(fsPtr->channel);
+	outBuffered = Tcl_OutputBuffered(fsPtr->channel);
+
+	sprintf(buf, "%d", inBuffered+inQueue);
+	Tcl_DStringAppendElement(dsPtr, buf);
+	sprintf(buf, "%d", outBuffered+outQueue);
+	Tcl_DStringAppendElement(dsPtr, buf);
+    }
+
+#if defined(TIOCMGET)
+    /*
+     * Get option -ttystatus
+     * Option is readonly and returned by [fconfigure chan -ttystatus] but not
+     * returned by unnamed [fconfigure chan].
+     */
+    if ((len > 4) && (strncmp(optionName, "-ttystatus", len) == 0)) {
+	int status;
+
+	valid = 1;
+	ioctl(fsPtr->fd, TIOCMGET, &status);
+	TtyModemStatusStr(status, dsPtr);
+    }
+#endif /* TIOCMGET */
+
+    if (valid) {
+	return TCL_OK;
+    }
+    return Tcl_BadChannelOption(interp, optionName, "mode"
+	    " queue ttystatus xchar"
+	    );
+}
+
+
+static const struct {int baud; speed_t speed;} speeds[] = {
+#ifdef B0
+    {0, B0},
+#endif
+#ifdef B50
+    {50, B50},
+#endif
+#ifdef B75
+    {75, B75},
+#endif
+#ifdef B110
+    {110, B110},
+#endif
+#ifdef B134
+    {134, B134},
+#endif
+#ifdef B150
+    {150, B150},
+#endif
+#ifdef B200
+    {200, B200},
+#endif
+#ifdef B300
+    {300, B300},
+#endif
+#ifdef B600
+    {600, B600},
+#endif
+#ifdef B1200
+    {1200, B1200},
+#endif
+#ifdef B1800
+    {1800, B1800},
+#endif
+#ifdef B2400
+    {2400, B2400},
+#endif
+#ifdef B4800
+    {4800, B4800},
+#endif
+#ifdef B9600
+    {9600, B9600},
+#endif
+#ifdef B14400
+    {14400, B14400},
+#endif
+#ifdef B19200
+    {19200, B19200},
+#endif
+#ifdef EXTA
+    {19200, EXTA},
+#endif
+#ifdef B28800
+    {28800, B28800},
+#endif
+#ifdef B38400
+    {38400, B38400},
+#endif
+#ifdef EXTB
+    {38400, EXTB},
+#endif
+#ifdef B57600
+    {57600, B57600},
+#endif
+#ifdef _B57600
+    {57600, _B57600},
+#endif
+#ifdef B76800
+    {76800, B76800},
+#endif
+#ifdef B115200
+    {115200, B115200},
+#endif
+#ifdef _B115200
+    {115200, _B115200},
+#endif
+#ifdef B153600
+    {153600, B153600},
+#endif
+#ifdef B230400
+    {230400, B230400},
+#endif
+#ifdef B307200
+    {307200, B307200},
+#endif
+#ifdef B460800
+    {460800, B460800},
+#endif
+#ifdef B500000
+    {500000, B500000},
+#endif
+#ifdef B576000
+    {576000, B576000},
+#endif
+#ifdef B921600
+    {921600, B921600},
+#endif
+#ifdef B1000000
+    {1000000, B1000000},
+#endif
+#ifdef B1152000
+    {1152000, B1152000},
+#endif
+#ifdef B1500000
+    {1500000,B1500000},
+#endif
+#ifdef B2000000
+    {2000000, B2000000},
+#endif
+#ifdef B2500000
+    {2500000,B2500000},
+#endif
+#ifdef B3000000
+    {3000000,B3000000},
+#endif
+#ifdef B3500000
+    {3500000,B3500000},
+#endif
+#ifdef B4000000
+    {4000000,B4000000},
+#endif
+    {-1, 0}
+};
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * TtyGetSpeed --
+ *
+ *	Given an integer baud rate, get the speed_t value that should be
+ *	used to select that baud rate.
+ *
+ * Results:
+ *	As above.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+static speed_t
+TtyGetSpeed(
+    int baud)			/* The baud rate to look up. */
+{
+    int bestIdx, bestDiff, i, diff;
+
+    bestIdx = 0;
+    bestDiff = 1000000;
+
+    /*
+     * If the baud rate does not correspond to one of the known mask values,
+     * choose the mask value whose baud rate is closest to the specified baud
+     * rate.
+     */
+
+    for (i = 0; speeds[i].baud >= 0; i++) {
+	diff = speeds[i].baud - baud;
+	if (diff < 0) {
+	    diff = -diff;
+	}
+	if (diff < bestDiff) {
+	    bestIdx = i;
+	    bestDiff = diff;
+	}
+    }
+    return speeds[bestIdx].speed;
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * TtyGetBaud --
+ *
+ *	Return the integer baud rate corresponding to a given speed_t value.
+ *
+ * Results:
+ *	As above. If the mask value was not recognized, 0 is returned.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+static int
+TtyGetBaud(
+    speed_t speed)		/* Speed mask value to look up. */
+{
+    int i;
+
+    for (i = 0; speeds[i].baud >= 0; i++) {
+	if (speeds[i].speed == speed) {
+	    return speeds[i].baud;
+	}
+    }
+    return 0;
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * TtyGetAttributes --
+ *
+ *	Get the current attributes of the specified serial device.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	None.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+static void
+TtyGetAttributes(
+    int fd,			/* Open file descriptor for serial port to be
+				 * queried. */
+    TtyAttrs *ttyPtr)		/* Buffer filled with serial port
+				 * attributes. */
+{
+    struct termios iostate;
+    int baud, parity, data, stop;
+
+    tcgetattr(fd, &iostate);
+
+    baud = TtyGetBaud(cfgetospeed(&iostate));
+
+    parity = 'n';
+#ifdef PAREXT
+    switch ((int) (iostate.c_cflag & (PARENB | PARODD | PAREXT))) {
+    case PARENB			  : parity = 'e'; break;
+    case PARENB | PARODD	  : parity = 'o'; break;
+    case PARENB |	   PAREXT : parity = 's'; break;
+    case PARENB | PARODD | PAREXT : parity = 'm'; break;
+    }
+#else /* !PAREXT */
+    switch ((int) (iostate.c_cflag & (PARENB | PARODD))) {
+    case PARENB		 : parity = 'e'; break;
+    case PARENB | PARODD : parity = 'o'; break;
+    }
+#endif /* PAREXT */
+
+    data = iostate.c_cflag & CSIZE;
+    data = (data == CS5) ? 5 : (data == CS6) ? 6 : (data == CS7) ? 7 : 8;
+
+    stop = (iostate.c_cflag & CSTOPB) ? 2 : 1;
+
+    ttyPtr->baud    = baud;
+    ttyPtr->parity  = parity;
+    ttyPtr->data    = data;
+    ttyPtr->stop    = stop;
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * TtySetAttributes --
+ *
+ *	Set the current attributes of the specified serial device.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	None.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+static void
+TtySetAttributes(
+    int fd,			/* Open file descriptor for serial port to be
+				 * modified. */
+    TtyAttrs *ttyPtr)		/* Buffer containing new attributes for serial
+				 * port. */
+{
+    struct termios iostate;
+    int parity, data, flag;
+
+    tcgetattr(fd, &iostate);
+    cfsetospeed(&iostate, TtyGetSpeed(ttyPtr->baud));
+    cfsetispeed(&iostate, TtyGetSpeed(ttyPtr->baud));
+
+    flag = 0;
+    parity = ttyPtr->parity;
+    if (parity != 'n') {
+	SET_BITS(flag, PARENB);
+#ifdef PAREXT
+	CLEAR_BITS(iostate.c_cflag, PAREXT);
+	if ((parity == 'm') || (parity == 's')) {
+	    SET_BITS(flag, PAREXT);
+	}
+#endif /* PAREXT */
+	if ((parity == 'm') || (parity == 'o')) {
+	    SET_BITS(flag, PARODD);
+	}
+    }
+    data = ttyPtr->data;
+    SET_BITS(flag,
+	    (data == 5) ? CS5 :
+	    (data == 6) ? CS6 :
+	    (data == 7) ? CS7 : CS8);
+    if (ttyPtr->stop == 2) {
+	SET_BITS(flag, CSTOPB);
+    }
+
+    CLEAR_BITS(iostate.c_cflag, PARENB | PARODD | CSIZE | CSTOPB);
+    SET_BITS(iostate.c_cflag, flag);
+
+    tcsetattr(fd, TCSADRAIN, &iostate);
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * TtyParseMode --
+ *
+ *	Parse the "-mode" argument to the fconfigure command. The argument is
+ *	of the form baud,parity,data,stop.
+ *
+ * Results:
+ *	The return value is TCL_OK if the argument was successfully parsed,
+ *	TCL_ERROR otherwise. If TCL_ERROR is returned, an error message is
+ *	left in the interp's result (if interp is non-NULL).
+ *
+ *---------------------------------------------------------------------------
+ */
+
+static int
+TtyParseMode(
+    Tcl_Interp *interp,		/* If non-NULL, interp for error return. */
+    const char *mode,		/* Mode string to be parsed. */
+    TtyAttrs *ttyPtr)		/* Filled with data from mode string */
+{
+    int i, end;
+    char parity;
+    const char *bad = "bad value for -mode";
+
+    i = sscanf(mode, "%d,%c,%d,%d%n",
+	    &ttyPtr->baud,
+	    &parity,
+	    &ttyPtr->data,
+	    &ttyPtr->stop, &end);
+    if ((i != 4) || (mode[end] != '\0')) {
+	if (interp != NULL) {
+	    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+		    "%s: should be baud,parity,data,stop", bad));
+	    Tcl_SetErrorCode(interp, "TCL", "VALUE", "SERIALMODE", NULL);
+	}
+	return TCL_ERROR;
+    }
+
+    /*
+     * Only allow setting mark/space parity on platforms that support it Make
+     * sure to allow for the case where strchr is a macro. [Bug: 5089]
+     *
+     * We cannot if/else/endif the strchr arguments, it has to be the whole
+     * function. On AIX this function is apparently a macro, and macros do
+     * not allow pre-processor directives in their arguments.
+     */
+
+    if (
+#if defined(PAREXT)
+        strchr("noems", parity)
+#else
+        strchr("noe", parity)
+#endif /* PAREXT */
+                               == NULL) {
+	if (interp != NULL) {
+	    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+		    "%s parity: should be %s", bad,
+#if defined(PAREXT)
+		    "n, o, e, m, or s"
+#else
+		    "n, o, or e"
+#endif /* PAREXT */
+		    ));
+	    Tcl_SetErrorCode(interp, "TCL", "VALUE", "SERIALMODE", NULL);
+	}
+	return TCL_ERROR;
+    }
+    ttyPtr->parity = parity;
+    if ((ttyPtr->data < 5) || (ttyPtr->data > 8)) {
+	if (interp != NULL) {
+	    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+		    "%s data: should be 5, 6, 7, or 8", bad));
+	    Tcl_SetErrorCode(interp, "TCL", "VALUE", "SERIALMODE", NULL);
+	}
+	return TCL_ERROR;
+    }
+    if ((ttyPtr->stop < 0) || (ttyPtr->stop > 2)) {
+	if (interp != NULL) {
+	    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+		    "%s stop: should be 1 or 2", bad));
+	    Tcl_SetErrorCode(interp, "TCL", "VALUE", "SERIALMODE", NULL);
+	}
+	return TCL_ERROR;
+    }
+    return TCL_OK;
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * TtyInit --
+ *
+ *	Given file descriptor that refers to a serial port, initialize the
+ *	serial port to a set of sane values so that Tcl can talk to a device
+ *	located on the serial port.
+ *
+ * Side effects:
+ *	Serial device initialized to non-blocking raw mode, similar to sockets
+ *	All other modes can be simulated on top of this in Tcl.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+static void
+TtyInit(
+    int fd)	/* Open file descriptor for serial port to be initialized. */
+{
+    struct termios iostate;
+    tcgetattr(fd, &iostate);
+
+    if (iostate.c_iflag != IGNBRK
+	    || iostate.c_oflag != 0
+	    || iostate.c_lflag != 0
+	    || iostate.c_cflag & CREAD
+	    || iostate.c_cc[VMIN] != 1
+	    || iostate.c_cc[VTIME] != 0)
+    {
+	iostate.c_iflag = IGNBRK;
+	iostate.c_oflag = 0;
+	iostate.c_lflag = 0;
+	iostate.c_cflag |= CREAD;
+	iostate.c_cc[VMIN] = 1;
+	iostate.c_cc[VTIME] = 0;
+
+	tcsetattr(fd, TCSADRAIN, &iostate);
+    }
+}
+#endif	/* SUPPORTS_TTY */
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclpOpenFileChannel --
+ *
+ *	Open an file based channel on Unix systems.
+ *
+ * Results:
+ *	The new channel or NULL. If NULL, the output argument errorCodePtr is
+ *	set to a POSIX error and an error message is left in the interp's
+ *	result if interp is not NULL.
+ *
+ * Side effects:
+ *	May open the channel and may cause creation of a file on the file
+ *	system.
+ *
+ *----------------------------------------------------------------------
+ */
+
+Tcl_Channel
+TclpOpenFileChannel(
+    Tcl_Interp *interp,		/* Interpreter for error reporting; can be
+				 * NULL. */
+    Tcl_Obj *pathPtr,		/* Name of file to open. */
+    int mode,			/* POSIX open mode. */
+    int permissions)		/* If the open involves creating a file, with
+				 * what modes to create it? */
+{
+    int fd, channelPermissions;
+    FileState *fsPtr;
+    const char *native, *translation;
+    char channelName[16 + TCL_INTEGER_SPACE];
+    const Tcl_ChannelType *channelTypePtr;
+
+    switch (mode & (O_RDONLY | O_WRONLY | O_RDWR)) {
+    case O_RDONLY:
+	channelPermissions = TCL_READABLE;
+	break;
+    case O_WRONLY:
+	channelPermissions = TCL_WRITABLE;
+	break;
+    case O_RDWR:
+	channelPermissions = (TCL_READABLE | TCL_WRITABLE);
+	break;
+    default:
+	/*
+	 * This may occurr if modeString was "", for example.
+	 */
+
+	Tcl_Panic("TclpOpenFileChannel: invalid mode value");
+	return NULL;
+    }
+
+    native = Tcl_FSGetNativePath(pathPtr);
+    if (native == NULL) {
+	if (interp != (Tcl_Interp *) NULL) {
+	    Tcl_AppendResult(interp, "couldn't open \"",
+	    TclGetString(pathPtr), "\": filename is invalid on this platform",
+	    NULL);
+	}
+	return NULL;
+    }
+
+#ifdef DJGPP
+    SET_BITS(mode, O_BINARY);
+#endif
+
+    fd = TclOSopen(native, mode, permissions);
+
+    if (fd < 0) {
+	if (interp != NULL) {
+	    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+		    "couldn't open \"%s\": %s",
+		    TclGetString(pathPtr), Tcl_PosixError(interp)));
+	}
+	return NULL;
+    }
+
+    /*
+     * Set close-on-exec flag on the fd so that child processes will not
+     * inherit this fd.
+     */
+
+    fcntl(fd, F_SETFD, FD_CLOEXEC);
+
+    sprintf(channelName, "file%d", fd);
+
+#ifdef SUPPORTS_TTY
+    if (strcmp(native, "/dev/tty") != 0 && isatty(fd)) {
+	/*
+	 * Initialize the serial port to a set of sane parameters. Especially
+	 * important if the remote device is set to echo and the serial port
+	 * driver was also set to echo -- as soon as a char were sent to the
+	 * serial port, the remote device would echo it, then the serial
+	 * driver would echo it back to the device, etc.
+	 *
+	 * Note that we do not do this if we're dealing with /dev/tty itself,
+	 * as that tends to cause Bad Things To Happen when you're working
+	 * interactively. Strictly a better check would be to see if the FD
+	 * being set up is a device and has the same major/minor as the
+	 * initial std FDs (beware reopening!) but that's nearly as messy.
+	 */
+
+	translation = "auto crlf";
+	channelTypePtr = &ttyChannelType;
+	TtyInit(fd);
+    } else
+#endif	/* SUPPORTS_TTY */
+    {
+	translation = NULL;
+	channelTypePtr = &fileChannelType;
+    }
+
+    fsPtr = ckalloc(sizeof(FileState));
+    fsPtr->validMask = channelPermissions | TCL_EXCEPTION;
+    fsPtr->fd = fd;
+
+    fsPtr->channel = Tcl_CreateChannel(channelTypePtr, channelName,
+	    fsPtr, channelPermissions);
+
+    if (translation != NULL) {
+	/*
+	 * Gotcha. Most modems need a "\r" at the end of the command sequence.
+	 * If you just send "at\n", the modem will not respond with "OK"
+	 * because it never got a "\r" to actually invoke the command. So, by
+	 * default, newlines are translated to "\r\n" on output to avoid "bug"
+	 * reports that the serial port isn't working.
+	 */
+
+	if (Tcl_SetChannelOption(interp, fsPtr->channel, "-translation",
+		translation) != TCL_OK) {
+	    Tcl_Close(NULL, fsPtr->channel);
+	    return NULL;
+	}
+    }
+
+    return fsPtr->channel;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_MakeFileChannel --
+ *
+ *	Makes a Tcl_Channel from an existing OS level file handle.
+ *
+ * Results:
+ *	The Tcl_Channel created around the preexisting OS level file handle.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+Tcl_Channel
+Tcl_MakeFileChannel(
+    ClientData handle,		/* OS level handle. */
+    int mode)			/* ORed combination of TCL_READABLE and
+				 * TCL_WRITABLE to indicate file mode. */
+{
+    FileState *fsPtr;
+    char channelName[16 + TCL_INTEGER_SPACE];
+    int fd = PTR2INT(handle);
+    const Tcl_ChannelType *channelTypePtr;
+    struct sockaddr sockaddr;
+    socklen_t sockaddrLen = sizeof(sockaddr);
+
+    if (mode == 0) {
+	return NULL;
+    }
+
+    sockaddr.sa_family = AF_UNSPEC;
+
+#ifdef SUPPORTS_TTY
+    if (isatty(fd)) {
+	channelTypePtr = &ttyChannelType;
+	sprintf(channelName, "serial%d", fd);
+    } else
+#endif /* SUPPORTS_TTY */
+    if ((getsockname(fd, (struct sockaddr *)&sockaddr, &sockaddrLen) == 0)
+	&& (sockaddrLen > 0)
+	&& (sockaddr.sa_family == AF_INET || sockaddr.sa_family == AF_INET6)) {
+	return TclpMakeTcpClientChannelMode(INT2PTR(fd), mode);
+    } else {
+	channelTypePtr = &fileChannelType;
+	sprintf(channelName, "file%d", fd);
+    }
+
+    fsPtr = ckalloc(sizeof(FileState));
+    fsPtr->fd = fd;
+    fsPtr->validMask = mode | TCL_EXCEPTION;
+    fsPtr->channel = Tcl_CreateChannel(channelTypePtr, channelName,
+	    fsPtr, mode);
+
+    return fsPtr->channel;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclpGetDefaultStdChannel --
+ *
+ *	Creates channels for standard input, standard output or standard error
+ *	output if they do not already exist.
+ *
+ * Results:
+ *	Returns the specified default standard channel, or NULL.
+ *
+ * Side effects:
+ *	May cause the creation of a standard channel and the underlying file.
+ *
+ *----------------------------------------------------------------------
+ */
+
+Tcl_Channel
+TclpGetDefaultStdChannel(
+    int type)			/* One of TCL_STDIN, TCL_STDOUT, TCL_STDERR. */
+{
+    Tcl_Channel channel = NULL;
+    int fd = 0;			/* Initializations needed to prevent */
+    int mode = 0;		/* compiler warning (used before set). */
+    const char *bufMode = NULL;
+
+    /*
+     * Some #def's to make the code a little clearer!
+     */
+
+#define ZERO_OFFSET	((Tcl_SeekOffset) 0)
+#define ERROR_OFFSET	((Tcl_SeekOffset) -1)
+
+    switch (type) {
+    case TCL_STDIN:
+	if ((TclOSseek(0, ZERO_OFFSET, SEEK_CUR) == ERROR_OFFSET)
+		&& (errno == EBADF)) {
+	    return NULL;
+	}
+	fd = 0;
+	mode = TCL_READABLE;
+	bufMode = "line";
+	break;
+    case TCL_STDOUT:
+	if ((TclOSseek(1, ZERO_OFFSET, SEEK_CUR) == ERROR_OFFSET)
+		&& (errno == EBADF)) {
+	    return NULL;
+	}
+	fd = 1;
+	mode = TCL_WRITABLE;
+	bufMode = "line";
+	break;
+    case TCL_STDERR:
+	if ((TclOSseek(2, ZERO_OFFSET, SEEK_CUR) == ERROR_OFFSET)
+		&& (errno == EBADF)) {
+	    return NULL;
+	}
+	fd = 2;
+	mode = TCL_WRITABLE;
+	bufMode = "none";
+	break;
+    default:
+	Tcl_Panic("TclGetDefaultStdChannel: Unexpected channel type");
+	break;
+    }
+
+#undef ZERO_OFFSET
+#undef ERROR_OFFSET
+
+    channel = Tcl_MakeFileChannel(INT2PTR(fd), mode);
+    if (channel == NULL) {
+	return NULL;
+    }
+
+    /*
+     * Set up the normal channel options for stdio handles.
+     */
+
+    if (Tcl_GetChannelType(channel) == &fileChannelType) {
+	Tcl_SetChannelOption(NULL, channel, "-translation", "auto");
+    } else {
+	Tcl_SetChannelOption(NULL, channel, "-translation", "auto crlf");
+    }
+    Tcl_SetChannelOption(NULL, channel, "-buffering", bufMode);
+    return channel;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_GetOpenFile --
+ *
+ *	Given a name of a channel registered in the given interpreter, returns
+ *	a FILE * for it.
+ *
+ * Results:
+ *	A standard Tcl result. If the channel is registered in the given
+ *	interpreter and it is managed by the "file" channel driver, and it is
+ *	open for the requested mode, then the output parameter filePtr is set
+ *	to a FILE * for the underlying file. On error, the filePtr is not set,
+ *	TCL_ERROR is returned and an error message is left in the interp's
+ *	result.
+ *
+ * Side effects:
+ *	May invoke fdopen to create the FILE * for the requested file.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+Tcl_GetOpenFile(
+    Tcl_Interp *interp,		/* Interpreter in which to find file. */
+    const char *chanID,		/* String that identifies file. */
+    int forWriting,		/* 1 means the file is going to be used for
+				 * writing, 0 means for reading. */
+    int checkUsage,		/* 1 means verify that the file was opened in
+				 * a mode that allows the access specified by
+				 * "forWriting". Ignored, we always check that
+				 * the channel is open for the requested
+				 * mode. */
+    ClientData *filePtr)	/* Store pointer to FILE structure here. */
+{
+    Tcl_Channel chan;
+    int chanMode, fd;
+    const Tcl_ChannelType *chanTypePtr;
+    ClientData data;
+    FILE *f;
+
+    chan = Tcl_GetChannel(interp, chanID, &chanMode);
+    if (chan == NULL) {
+	return TCL_ERROR;
+    }
+    if (forWriting && !(chanMode & TCL_WRITABLE)) {
+	Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+		"\"%s\" wasn't opened for writing", chanID));
+	Tcl_SetErrorCode(interp, "TCL", "VALUE", "CHANNEL", "NOT_WRITABLE",
+		NULL);
+	return TCL_ERROR;
+    } else if (!forWriting && !(chanMode & TCL_READABLE)) {
+	Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+		"\"%s\" wasn't opened for reading", chanID));
+	Tcl_SetErrorCode(interp, "TCL", "VALUE", "CHANNEL", "NOT_READABLE",
+		NULL);
+	return TCL_ERROR;
+    }
+
+    /*
+     * We allow creating a FILE * out of file based, pipe based and socket
+     * based channels. We currently do not allow any other channel types,
+     * because it is likely that stdio will not know what to do with them.
+     */
+
+    chanTypePtr = Tcl_GetChannelType(chan);
+    if ((chanTypePtr == &fileChannelType)
+#ifdef SUPPORTS_TTY
+	    || (chanTypePtr == &ttyChannelType)
+#endif /* SUPPORTS_TTY */
+	    || (strcmp(chanTypePtr->typeName, "tcp") == 0)
+	    || (strcmp(chanTypePtr->typeName, "pipe") == 0)) {
+	if (Tcl_GetChannelHandle(chan,
+		(forWriting ? TCL_WRITABLE : TCL_READABLE), &data) == TCL_OK) {
+	    fd = PTR2INT(data);
+
+	    /*
+	     * The call to fdopen below is probably dangerous, since it will
+	     * truncate an existing file if the file is being opened for
+	     * writing....
+	     */
+
+	    f = fdopen(fd, (forWriting ? "w" : "r"));
+	    if (f == NULL) {
+		Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+			"cannot get a FILE * for \"%s\"", chanID));
+		Tcl_SetErrorCode(interp, "TCL", "VALUE", "CHANNEL",
+			"FILE_FAILURE", NULL);
+		return TCL_ERROR;
+	    }
+	    *filePtr = f;
+	    return TCL_OK;
+	}
+    }
+
+    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+	    "\"%s\" cannot be used to get a FILE *", chanID));
+    Tcl_SetErrorCode(interp, "TCL", "VALUE", "CHANNEL", "NO_DESCRIPTOR",
+	    NULL);
+    return TCL_ERROR;
+}
+
+#ifndef HAVE_COREFOUNDATION	/* Darwin/Mac OS X CoreFoundation notifier is
+				 * in tclMacOSXNotify.c */
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclUnixWaitForFile --
+ *
+ *	This function waits synchronously for a file to become readable or
+ *	writable, with an optional timeout.
+ *
+ * Results:
+ *	The return value is an OR'ed combination of TCL_READABLE,
+ *	TCL_WRITABLE, and TCL_EXCEPTION, indicating the conditions that are
+ *	present on file at the time of the return. This function will not
+ *	return until either "timeout" milliseconds have elapsed or at least
+ *	one of the conditions given by mask has occurred for file (a return
+ *	value of 0 means that a timeout occurred). No normal events will be
+ *	serviced during the execution of this function.
+ *
+ * Side effects:
+ *	Time passes.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclUnixWaitForFile(
+    int fd,			/* Handle for file on which to wait. */
+    int mask,			/* What to wait for: OR'ed combination of
+				 * TCL_READABLE, TCL_WRITABLE, and
+				 * TCL_EXCEPTION. */
+    int timeout)		/* Maximum amount of time to wait for one of
+				 * the conditions in mask to occur, in
+				 * milliseconds. A value of 0 means don't wait
+				 * at all, and a value of -1 means wait
+				 * forever. */
+{
+    Tcl_Time abortTime = {0, 0}, now; /* silence gcc 4 warning */
+    struct timeval blockTime, *timeoutPtr;
+    int numFound, result = 0;
+    fd_set readableMask;
+    fd_set writableMask;
+    fd_set exceptionMask;
+
+#ifndef _DARWIN_C_SOURCE
+    /*
+     * Sanity check fd.
+     */
+
+    if (fd >= FD_SETSIZE) {
+	Tcl_Panic("TclUnixWaitForFile can't handle file id %d", fd);
+	/* must never get here, or select masks overrun will occur below */
+    }
+#endif
+
+    /*
+     * If there is a non-zero finite timeout, compute the time when we give
+     * up.
+     */
+
+    if (timeout > 0) {
+	Tcl_GetTime(&now);
+	abortTime.sec = now.sec + timeout/1000;
+	abortTime.usec = now.usec + (timeout%1000)*1000;
+	if (abortTime.usec >= 1000000) {
+	    abortTime.usec -= 1000000;
+	    abortTime.sec += 1;
+	}
+	timeoutPtr = &blockTime;
+    } else if (timeout == 0) {
+	timeoutPtr = &blockTime;
+	blockTime.tv_sec = 0;
+	blockTime.tv_usec = 0;
+    } else {
+	timeoutPtr = NULL;
+    }
+
+    /*
+     * Initialize the select masks.
+     */
+
+    FD_ZERO(&readableMask);
+    FD_ZERO(&writableMask);
+    FD_ZERO(&exceptionMask);
+
+    /*
+     * Loop in a mini-event loop of our own, waiting for either the file to
+     * become ready or a timeout to occur.
+     */
+
+    while (1) {
+	if (timeout > 0) {
+	    blockTime.tv_sec = abortTime.sec - now.sec;
+	    blockTime.tv_usec = abortTime.usec - now.usec;
+	    if (blockTime.tv_usec < 0) {
+		blockTime.tv_sec -= 1;
+		blockTime.tv_usec += 1000000;
+	    }
+	    if (blockTime.tv_sec < 0) {
+		blockTime.tv_sec = 0;
+		blockTime.tv_usec = 0;
+	    }
+	}
+
+	/*
+	 * Setup the select masks for the fd.
+	 */
+
+	if (mask & TCL_READABLE) {
+	    FD_SET(fd, &readableMask);
+	}
+	if (mask & TCL_WRITABLE) {
+	    FD_SET(fd, &writableMask);
+	}
+	if (mask & TCL_EXCEPTION) {
+	    FD_SET(fd, &exceptionMask);
+	}
+
+	/*
+	 * Wait for the event or a timeout.
+	 */
+
+	numFound = select(fd + 1, &readableMask, &writableMask,
+		&exceptionMask, timeoutPtr);
+	if (numFound == 1) {
+	    if (FD_ISSET(fd, &readableMask)) {
+		SET_BITS(result, TCL_READABLE);
+	    }
+	    if (FD_ISSET(fd, &writableMask)) {
+		SET_BITS(result, TCL_WRITABLE);
+	    }
+	    if (FD_ISSET(fd, &exceptionMask)) {
+		SET_BITS(result, TCL_EXCEPTION);
+	    }
+	    result &= mask;
+	    if (result) {
+		break;
+	    }
+	}
+	if (timeout == 0) {
+	    break;
+	}
+	if (timeout < 0) {
+	    continue;
+	}
+
+	/*
+	 * The select returned early, so we need to recompute the timeout.
+	 */
+
+	Tcl_GetTime(&now);
+	if ((abortTime.sec < now.sec)
+		|| (abortTime.sec==now.sec && abortTime.usec<=now.usec)) {
+	    break;
+	}
+    }
+    return result;
+}
+#endif /* HAVE_COREFOUNDATION */
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * FileTruncateProc --
+ *
+ *	Truncates a file to a given length.
+ *
+ * Results:
+ *	0 if the operation succeeded, and -1 if it failed (in which case
+ *	*errorCodePtr will be set to errno).
+ *
+ * Side effects:
+ *	The underlying file is potentially truncated. This can have a wide
+ *	variety of side effects, including moving file pointers that point at
+ *	places later in the file than the truncate point.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+FileTruncateProc(
+    ClientData instanceData,
+    Tcl_WideInt length)
+{
+    FileState *fsPtr = instanceData;
+    int result;
+
+#ifdef HAVE_TYPE_OFF64_T
+    /*
+     * We assume this goes with the type for now...
+     */
+
+    result = ftruncate64(fsPtr->fd, (off64_t) length);
+#else
+    result = ftruncate(fsPtr->fd, (off_t) length);
+#endif
+    if (result) {
+	return errno;
+    }
+    return 0;
+}
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/tcl8.6/unix/tclUnixCompat.c b/tcl8.6/unix/tclUnixCompat.c
new file mode 100644
index 0000000..2a68f7f
--- /dev/null
+++ b/tcl8.6/unix/tclUnixCompat.c
@@ -0,0 +1,1022 @@
+/*
+ * tclUnixCompat.c
+ *
+ * Written by: Zoran Vasiljevic (vasiljevic@users.sourceforge.net).
+ *
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ */
+
+#include "tclInt.h"
+#include <pwd.h>
+#include <grp.h>
+#include <errno.h>
+#include <string.h>
+
+/*
+ * See also: SC_BLOCKING_STYLE in unix/tcl.m4
+ */
+
+#ifdef	USE_FIONBIO
+#   ifdef HAVE_SYS_FILIO_H
+#	include	<sys/filio.h>	/* For FIONBIO. */
+#   endif
+#   ifdef HAVE_SYS_IOCTL_H
+#	include	<sys/ioctl.h>
+#   endif
+#endif	/* USE_FIONBIO */
+
+/*
+ * Used to pad structures at size'd boundaries
+ *
+ * This macro assumes that the pointer 'buffer' was created from an aligned
+ * pointer by adding the 'length'. If this 'length' was not a multiple of the
+ * 'size' the result is unaligned and PadBuffer corrects both the pointer,
+ * _and_ the 'length'. The latter means that future increments of 'buffer' by
+ * 'length' stay aligned.
+ */
+
+#define PadBuffer(buffer, length, size)			\
+    if (((length) % (size))) {				\
+	(buffer) += ((size) - ((length) % (size)));	\
+	(length) += ((size) - ((length) % (size)));	\
+    }
+
+/*
+ * Per-thread private storage used to store values returned from MT-unsafe
+ * library calls.
+ */
+
+#ifdef TCL_THREADS
+
+typedef struct ThreadSpecificData {
+    struct passwd pwd;
+#if defined(HAVE_GETPWNAM_R_5) || defined(HAVE_GETPWUID_R_5)
+#define NEED_PW_CLEANER 1
+    char *pbuf;
+    int pbuflen;
+#else
+    char pbuf[2048];
+#endif
+
+    struct group grp;
+#if defined(HAVE_GETGRNAM_R_5) || defined(HAVE_GETGRGID_R_5)
+#define NEED_GR_CLEANER 1
+    char *gbuf;
+    int gbuflen;
+#else
+    char gbuf[2048];
+#endif
+
+#if !defined(HAVE_MTSAFE_GETHOSTBYNAME) || !defined(HAVE_MTSAFE_GETHOSTBYADDR)
+    struct hostent hent;
+    char hbuf[2048];
+#endif
+}  ThreadSpecificData;
+static Tcl_ThreadDataKey dataKey;
+
+#if ((!defined(HAVE_GETHOSTBYNAME_R) || !defined(HAVE_GETHOSTBYADDR_R)) && \
+     (!defined(HAVE_MTSAFE_GETHOSTBYNAME) || \
+      !defined(HAVE_MTSAFE_GETHOSTBYADDR))) || \
+      !defined(HAVE_GETPWNAM_R) || !defined(HAVE_GETPWUID_R) || \
+      !defined(HAVE_GETGRNAM_R) || !defined(HAVE_GETGRGID_R)
+/*
+ * Mutex to lock access to MT-unsafe calls. This is just to protect our own
+ * usage. It does not protect us from others calling the same functions
+ * without (or using some different) lock.
+ */
+
+static Tcl_Mutex compatLock;
+
+/*
+ * Helper function declarations. Note that these are only used if needed and
+ * only defined if used (via the NEED_* macros).
+ */
+
+#undef NEED_COPYARRAY
+#undef NEED_COPYGRP
+#undef NEED_COPYHOSTENT
+#undef NEED_COPYPWD
+#undef NEED_COPYSTRING
+
+#if !defined(HAVE_GETGRNAM_R_5) && !defined(HAVE_GETGRNAM_R_4)
+#define NEED_COPYGRP 1
+static int		CopyGrp(struct group *tgtPtr, char *buf, int buflen);
+#endif
+
+#if !defined(HAVE_GETPWNAM_R_5) && !defined(HAVE_GETPWNAM_R_4)
+#define NEED_COPYPWD 1
+static int		CopyPwd(struct passwd *tgtPtr, char *buf, int buflen);
+#endif
+
+static int		CopyArray(char **src, int elsize, char *buf,
+			    int buflen);
+static int		CopyHostent(struct hostent *tgtPtr, char *buf,
+			    int buflen);
+static int		CopyString(const char *src, char *buf, int buflen);
+
+#endif
+
+#ifdef NEED_PW_CLEANER
+static void		FreePwBuf(ClientData ignored);
+#endif
+#ifdef NEED_GR_CLEANER
+static void		FreeGrBuf(ClientData ignored);
+#endif
+#endif /* TCL_THREADS */
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * TclUnixSetBlockingMode --
+ *
+ *	Set the blocking mode of a file descriptor.
+ *
+ * Results:
+ *
+ *	0 on success, -1 (with errno set) on error.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+int
+TclUnixSetBlockingMode(
+    int fd,			/* File descriptor */
+    int mode)			/* Either TCL_MODE_BLOCKING or
+				 * TCL_MODE_NONBLOCKING. */
+{
+#ifndef USE_FIONBIO
+    int flags = fcntl(fd, F_GETFL);
+
+    if (mode == TCL_MODE_BLOCKING) {
+	flags &= ~O_NONBLOCK;
+    } else {
+	flags |= O_NONBLOCK;
+    }
+    return fcntl(fd, F_SETFL, flags);
+#else /* USE_FIONBIO */
+    int state = (mode == TCL_MODE_NONBLOCKING);
+
+    return ioctl(fd, FIONBIO, &state);
+#endif /* !USE_FIONBIO */
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * TclpGetPwNam --
+ *
+ *      Thread-safe wrappers for getpwnam(). See "man getpwnam" for more
+ *      details.
+ *
+ * Results:
+ *      Pointer to struct passwd on success or NULL on error.
+ *
+ * Side effects:
+ *      None.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+struct passwd *
+TclpGetPwNam(
+    const char *name)
+{
+#if !defined(TCL_THREADS)
+    return getpwnam(name);
+#else
+    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
+
+#if defined(HAVE_GETPWNAM_R_5)
+    struct passwd *pwPtr = NULL;
+
+    /*
+     * How to allocate a buffer of the right initial size. If you want the
+     * gory detail, see http://www.opengroup.org/austin/docs/austin_328.txt
+     * and weep.
+     */
+
+    if (tsdPtr->pbuf == NULL) {
+	tsdPtr->pbuflen = (int) sysconf(_SC_GETPW_R_SIZE_MAX);
+	if (tsdPtr->pbuflen < 1) {
+	    tsdPtr->pbuflen = 1024;
+	}
+	tsdPtr->pbuf = ckalloc(tsdPtr->pbuflen);
+	Tcl_CreateThreadExitHandler(FreePwBuf, NULL);
+    }
+    while (1) {
+	int e = getpwnam_r(name, &tsdPtr->pwd, tsdPtr->pbuf, tsdPtr->pbuflen,
+		&pwPtr);
+
+	if (e == 0) {
+	    break;
+	} else if (e != ERANGE) {
+	    return NULL;
+	}
+	tsdPtr->pbuflen *= 2;
+	tsdPtr->pbuf = ckrealloc(tsdPtr->pbuf, tsdPtr->pbuflen);
+    }
+    return (pwPtr != NULL ? &tsdPtr->pwd : NULL);
+
+#elif defined(HAVE_GETPWNAM_R_4)
+    return getpwnam_r(name, &tsdPtr->pwd, tsdPtr->pbuf, sizeof(tsdPtr->pbuf));
+
+#else
+    struct passwd *pwPtr;
+
+    Tcl_MutexLock(&compatLock);
+    pwPtr = getpwnam(name);
+    if (pwPtr != NULL) {
+	tsdPtr->pwd = *pwPtr;
+	pwPtr = &tsdPtr->pwd;
+	if (CopyPwd(&tsdPtr->pwd, tsdPtr->pbuf, sizeof(tsdPtr->pbuf)) == -1) {
+	    pwPtr = NULL;
+	}
+    }
+    Tcl_MutexUnlock(&compatLock);
+    return pwPtr;
+#endif
+
+    return NULL;		/* Not reached. */
+#endif /* TCL_THREADS */
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * TclpGetPwUid --
+ *
+ *      Thread-safe wrappers for getpwuid(). See "man getpwuid" for more
+ *      details.
+ *
+ * Results:
+ *      Pointer to struct passwd on success or NULL on error.
+ *
+ * Side effects:
+ *      None.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+struct passwd *
+TclpGetPwUid(
+    uid_t uid)
+{
+#if !defined(TCL_THREADS)
+    return getpwuid(uid);
+#else
+    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
+
+#if defined(HAVE_GETPWUID_R_5)
+    struct passwd *pwPtr = NULL;
+
+    /*
+     * How to allocate a buffer of the right initial size. If you want the
+     * gory detail, see http://www.opengroup.org/austin/docs/austin_328.txt
+     * and weep.
+     */
+
+    if (tsdPtr->pbuf == NULL) {
+	tsdPtr->pbuflen = (int) sysconf(_SC_GETPW_R_SIZE_MAX);
+	if (tsdPtr->pbuflen < 1) {
+	    tsdPtr->pbuflen = 1024;
+	}
+	tsdPtr->pbuf = ckalloc(tsdPtr->pbuflen);
+	Tcl_CreateThreadExitHandler(FreePwBuf, NULL);
+    }
+    while (1) {
+	int e = getpwuid_r(uid, &tsdPtr->pwd, tsdPtr->pbuf, tsdPtr->pbuflen,
+		&pwPtr);
+
+	if (e == 0) {
+	    break;
+	} else if (e != ERANGE) {
+	    return NULL;
+	}
+	tsdPtr->pbuflen *= 2;
+	tsdPtr->pbuf = ckrealloc(tsdPtr->pbuf, tsdPtr->pbuflen);
+    }
+    return (pwPtr != NULL ? &tsdPtr->pwd : NULL);
+
+#elif defined(HAVE_GETPWUID_R_4)
+    return getpwuid_r(uid, &tsdPtr->pwd, tsdPtr->pbuf, sizeof(tsdPtr->pbuf));
+
+#else
+    struct passwd *pwPtr;
+
+    Tcl_MutexLock(&compatLock);
+    pwPtr = getpwuid(uid);
+    if (pwPtr != NULL) {
+	tsdPtr->pwd = *pwPtr;
+	pwPtr = &tsdPtr->pwd;
+	if (CopyPwd(&tsdPtr->pwd, tsdPtr->pbuf, sizeof(tsdPtr->pbuf)) == -1) {
+	    pwPtr = NULL;
+	}
+    }
+    Tcl_MutexUnlock(&compatLock);
+    return pwPtr;
+#endif
+
+    return NULL;		/* Not reached. */
+#endif /* TCL_THREADS */
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * FreePwBuf --
+ *
+ *	Helper that is used to dispose of space allocated and referenced from
+ *	the ThreadSpecificData for user entries. (Darn that baroque POSIX
+ *	reentrant interface.)
+ *
+ *---------------------------------------------------------------------------
+ */
+
+#ifdef NEED_PW_CLEANER
+static void
+FreePwBuf(
+    ClientData ignored)
+{
+    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
+
+    ckfree(tsdPtr->pbuf);
+}
+#endif /* NEED_PW_CLEANER */
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * TclpGetGrNam --
+ *
+ *      Thread-safe wrappers for getgrnam(). See "man getgrnam" for more
+ *      details.
+ *
+ * Results:
+ *      Pointer to struct group on success or NULL on error.
+ *
+ * Side effects:
+ *      None.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+struct group *
+TclpGetGrNam(
+    const char *name)
+{
+#if !defined(TCL_THREADS)
+    return getgrnam(name);
+#else
+    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
+
+#if defined(HAVE_GETGRNAM_R_5)
+    struct group *grPtr = NULL;
+
+    /*
+     * How to allocate a buffer of the right initial size. If you want the
+     * gory detail, see http://www.opengroup.org/austin/docs/austin_328.txt
+     * and weep.
+     */
+
+    if (tsdPtr->gbuf == NULL) {
+	tsdPtr->gbuflen = (int) sysconf(_SC_GETGR_R_SIZE_MAX);
+	if (tsdPtr->gbuflen < 1) {
+	    tsdPtr->gbuflen = 1024;
+	}
+	tsdPtr->gbuf = ckalloc(tsdPtr->gbuflen);
+	Tcl_CreateThreadExitHandler(FreeGrBuf, NULL);
+    }
+    while (1) {
+	int e = getgrnam_r(name, &tsdPtr->grp, tsdPtr->gbuf, tsdPtr->gbuflen,
+		&grPtr);
+
+	if (e == 0) {
+	    break;
+	} else if (e != ERANGE) {
+	    return NULL;
+	}
+	tsdPtr->gbuflen *= 2;
+	tsdPtr->gbuf = ckrealloc(tsdPtr->gbuf, tsdPtr->gbuflen);
+    }
+    return (grPtr != NULL ? &tsdPtr->grp : NULL);
+
+#elif defined(HAVE_GETGRNAM_R_4)
+    return getgrnam_r(name, &tsdPtr->grp, tsdPtr->gbuf, sizeof(tsdPtr->gbuf));
+
+#else
+    struct group *grPtr;
+
+    Tcl_MutexLock(&compatLock);
+    grPtr = getgrnam(name);
+    if (grPtr != NULL) {
+	tsdPtr->grp = *grPtr;
+	grPtr = &tsdPtr->grp;
+	if (CopyGrp(&tsdPtr->grp, tsdPtr->gbuf, sizeof(tsdPtr->gbuf)) == -1) {
+	    grPtr = NULL;
+	}
+    }
+    Tcl_MutexUnlock(&compatLock);
+    return grPtr;
+#endif
+
+    return NULL;		/* Not reached. */
+#endif /* TCL_THREADS */
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * TclpGetGrGid --
+ *
+ *      Thread-safe wrappers for getgrgid(). See "man getgrgid" for more
+ *      details.
+ *
+ * Results:
+ *      Pointer to struct group on success or NULL on error.
+ *
+ * Side effects:
+ *      None.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+struct group *
+TclpGetGrGid(
+    gid_t gid)
+{
+#if !defined(TCL_THREADS)
+    return getgrgid(gid);
+#else
+    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
+
+#if defined(HAVE_GETGRGID_R_5)
+    struct group *grPtr = NULL;
+
+    /*
+     * How to allocate a buffer of the right initial size. If you want the
+     * gory detail, see http://www.opengroup.org/austin/docs/austin_328.txt
+     * and weep.
+     */
+
+    if (tsdPtr->gbuf == NULL) {
+	tsdPtr->gbuflen = (int) sysconf(_SC_GETGR_R_SIZE_MAX);
+	if (tsdPtr->gbuflen < 1) {
+	    tsdPtr->gbuflen = 1024;
+	}
+	tsdPtr->gbuf = ckalloc(tsdPtr->gbuflen);
+	Tcl_CreateThreadExitHandler(FreeGrBuf, NULL);
+    }
+    while (1) {
+	int e = getgrgid_r(gid, &tsdPtr->grp, tsdPtr->gbuf, tsdPtr->gbuflen,
+		&grPtr);
+
+	if (e == 0) {
+	    break;
+	} else if (e != ERANGE) {
+	    return NULL;
+	}
+	tsdPtr->gbuflen *= 2;
+	tsdPtr->gbuf = ckrealloc(tsdPtr->gbuf, tsdPtr->gbuflen);
+    }
+    return (grPtr != NULL ? &tsdPtr->grp : NULL);
+
+#elif defined(HAVE_GETGRGID_R_4)
+    return getgrgid_r(gid, &tsdPtr->grp, tsdPtr->gbuf, sizeof(tsdPtr->gbuf));
+
+#else
+    struct group *grPtr;
+
+    Tcl_MutexLock(&compatLock);
+    grPtr = getgrgid(gid);
+    if (grPtr != NULL) {
+	tsdPtr->grp = *grPtr;
+	grPtr = &tsdPtr->grp;
+	if (CopyGrp(&tsdPtr->grp, tsdPtr->gbuf, sizeof(tsdPtr->gbuf)) == -1) {
+	    grPtr = NULL;
+	}
+    }
+    Tcl_MutexUnlock(&compatLock);
+    return grPtr;
+#endif
+
+    return NULL;		/* Not reached. */
+#endif /* TCL_THREADS */
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * FreeGrBuf --
+ *
+ *	Helper that is used to dispose of space allocated and referenced from
+ *	the ThreadSpecificData for group entries. (Darn that baroque POSIX
+ *	reentrant interface.)
+ *
+ *---------------------------------------------------------------------------
+ */
+
+#ifdef NEED_GR_CLEANER
+static void
+FreeGrBuf(
+    ClientData ignored)
+{
+    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
+
+    ckfree(tsdPtr->gbuf);
+}
+#endif /* NEED_GR_CLEANER */
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * TclpGetHostByName --
+ *
+ *      Thread-safe wrappers for gethostbyname(). See "man gethostbyname" for
+ *      more details.
+ *
+ * Results:
+ *      Pointer to struct hostent on success or NULL on error.
+ *
+ * Side effects:
+ *      None.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+struct hostent *
+TclpGetHostByName(
+    const char *name)
+{
+#if !defined(TCL_THREADS) || defined(HAVE_MTSAFE_GETHOSTBYNAME)
+    return gethostbyname(name);
+#else
+    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
+
+#if defined(HAVE_GETHOSTBYNAME_R_5)
+    int h_errno;
+
+    return gethostbyname_r(name, &tsdPtr->hent, tsdPtr->hbuf,
+			   sizeof(tsdPtr->hbuf), &h_errno);
+
+#elif defined(HAVE_GETHOSTBYNAME_R_6)
+    struct hostent *hePtr = NULL;
+    int h_errno, result;
+
+    result = gethostbyname_r(name, &tsdPtr->hent, tsdPtr->hbuf,
+	    sizeof(tsdPtr->hbuf), &hePtr, &h_errno);
+    return (result == 0) ? hePtr : NULL;
+
+#elif defined(HAVE_GETHOSTBYNAME_R_3)
+    struct hostent_data data;
+
+    return (gethostbyname_r(name, &tsdPtr->hent, &data) == 0)
+	    ? &tsdPtr->hent : NULL;
+
+#else
+#define NEED_COPYHOSTENT 1
+    struct hostent *hePtr;
+
+    Tcl_MutexLock(&compatLock);
+    hePtr = gethostbyname(name);
+    if (hePtr != NULL) {
+	tsdPtr->hent = *hePtr;
+	hePtr = &tsdPtr->hent;
+	if (CopyHostent(&tsdPtr->hent, tsdPtr->hbuf,
+		sizeof(tsdPtr->hbuf)) == -1) {
+	    hePtr = NULL;
+	}
+    }
+    Tcl_MutexUnlock(&compatLock);
+    return hePtr;
+#endif
+
+    return NULL;		/* Not reached. */
+#endif /* TCL_THREADS */
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * TclpGetHostByAddr --
+ *
+ *      Thread-safe wrappers for gethostbyaddr(). See "man gethostbyaddr" for
+ *      more details.
+ *
+ * Results:
+ *      Pointer to struct hostent on success or NULL on error.
+ *
+ * Side effects:
+ *      None.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+struct hostent *
+TclpGetHostByAddr(
+    const char *addr,
+    int length,
+    int type)
+{
+#if !defined(TCL_THREADS) || defined(HAVE_MTSAFE_GETHOSTBYADDR)
+    return gethostbyaddr(addr, length, type);
+#else
+    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
+
+#if defined(HAVE_GETHOSTBYADDR_R_7)
+    int h_errno;
+
+    return gethostbyaddr_r(addr, length, type, &tsdPtr->hent, tsdPtr->hbuf,
+	    sizeof(tsdPtr->hbuf), &h_errno);
+
+#elif defined(HAVE_GETHOSTBYADDR_R_8)
+    struct hostent *hePtr;
+    int h_errno;
+
+    return (gethostbyaddr_r(addr, length, type, &tsdPtr->hent, tsdPtr->hbuf,
+		sizeof(tsdPtr->hbuf), &hePtr, &h_errno) == 0)
+	    ? &tsdPtr->hent : NULL;
+#else
+#define NEED_COPYHOSTENT 1
+    struct hostent *hePtr;
+
+    Tcl_MutexLock(&compatLock);
+    hePtr = gethostbyaddr(addr, length, type);
+    if (hePtr != NULL) {
+	tsdPtr->hent = *hePtr;
+	hePtr = &tsdPtr->hent;
+	if (CopyHostent(&tsdPtr->hent, tsdPtr->hbuf,
+		sizeof(tsdPtr->hbuf)) == -1) {
+	    hePtr = NULL;
+	}
+    }
+    Tcl_MutexUnlock(&compatLock);
+    return hePtr;
+#endif
+
+    return NULL;		/* Not reached. */
+#endif /* TCL_THREADS */
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * CopyGrp --
+ *
+ *      Copies string fields of the group structure to the private buffer,
+ *      honouring the size of the buffer.
+ *
+ * Results:
+ *      0 on success or -1 on error (errno = ERANGE).
+ *
+ * Side effects:
+ *      None.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+#ifdef NEED_COPYGRP
+#define NEED_COPYARRAY 1
+#define NEED_COPYSTRING 1
+
+static int
+CopyGrp(
+    struct group *tgtPtr,
+    char *buf,
+    int buflen)
+{
+    register char *p = buf;
+    register int copied, len = 0;
+
+    /*
+     * Copy username.
+     */
+
+    copied = CopyString(tgtPtr->gr_name, p, buflen - len);
+    if (copied == -1) {
+	goto range;
+    }
+    tgtPtr->gr_name = (copied > 0) ? p : NULL;
+    len += copied;
+    p = buf + len;
+
+    /*
+     * Copy password.
+     */
+
+    copied = CopyString(tgtPtr->gr_passwd, p, buflen - len);
+    if (copied == -1) {
+	goto range;
+    }
+    tgtPtr->gr_passwd = (copied > 0) ? p : NULL;
+    len += copied;
+    p = buf + len;
+
+    /*
+     * Copy group members.
+     */
+
+    PadBuffer(p, len, sizeof(char *));
+    copied = CopyArray((char **)tgtPtr->gr_mem, -1, p, buflen - len);
+    if (copied == -1) {
+	goto range;
+    }
+    tgtPtr->gr_mem = (copied > 0) ? (char **)p : NULL;
+
+    return 0;
+
+  range:
+    errno = ERANGE;
+    return -1;
+}
+#endif /* NEED_COPYGRP */
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * CopyHostent --
+ *
+ *      Copies string fields of the hostnent structure to the private buffer,
+ *      honouring the size of the buffer.
+ *
+ * Results:
+ *      Number of bytes copied on success or -1 on error (errno = ERANGE)
+ *
+ * Side effects:
+ *      None
+ *
+ *---------------------------------------------------------------------------
+ */
+
+#ifdef NEED_COPYHOSTENT
+#define NEED_COPYSTRING 1
+#define NEED_COPYARRAY 1
+
+static int
+CopyHostent(
+    struct hostent *tgtPtr,
+    char *buf,
+    int buflen)
+{
+    char *p = buf;
+    int copied, len = 0;
+
+    copied = CopyString(tgtPtr->h_name, p, buflen - len);
+    if (copied == -1) {
+	goto range;
+    }
+    tgtPtr->h_name = (copied > 0) ? p : NULL;
+    len += copied;
+    p = buf + len;
+
+    PadBuffer(p, len, sizeof(char *));
+    copied = CopyArray(tgtPtr->h_aliases, -1, p, buflen - len);
+    if (copied == -1) {
+	goto range;
+    }
+    tgtPtr->h_aliases = (copied > 0) ? (char **)p : NULL;
+    len += copied;
+    p += len;
+
+    PadBuffer(p, len, sizeof(char *));
+    copied = CopyArray(tgtPtr->h_addr_list, tgtPtr->h_length, p, buflen-len);
+    if (copied == -1) {
+	goto range;
+    }
+    tgtPtr->h_addr_list = (copied > 0) ? (char **)p : NULL;
+
+    return 0;
+
+  range:
+    errno = ERANGE;
+    return -1;
+}
+#endif /* NEED_COPYHOSTENT */
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * CopyPwd --
+ *
+ *      Copies string fields of the passwd structure to the private buffer,
+ *      honouring the size of the buffer.
+ *
+ * Results:
+ *      0 on success or -1 on error (errno = ERANGE).
+ *
+ * Side effects:
+ *      We are not copying the gecos field as it may not be supported on all
+ *      platforms.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+#ifdef NEED_COPYPWD
+#define NEED_COPYSTRING 1
+
+static int
+CopyPwd(
+    struct passwd *tgtPtr,
+    char *buf,
+    int buflen)
+{
+    char *p = buf;
+    int copied, len = 0;
+
+    copied = CopyString(tgtPtr->pw_name, p, buflen - len);
+    if (copied == -1) {
+    range:
+	errno = ERANGE;
+	return -1;
+    }
+    tgtPtr->pw_name = (copied > 0) ? p : NULL;
+    len += copied;
+    p = buf + len;
+
+    copied = CopyString(tgtPtr->pw_passwd, p, buflen - len);
+    if (copied == -1) {
+	goto range;
+    }
+    tgtPtr->pw_passwd = (copied > 0) ? p : NULL;
+    len += copied;
+    p = buf + len;
+
+    copied = CopyString(tgtPtr->pw_dir, p, buflen - len);
+    if (copied == -1) {
+	goto range;
+    }
+    tgtPtr->pw_dir = (copied > 0) ? p : NULL;
+    len += copied;
+    p = buf + len;
+
+    copied = CopyString(tgtPtr->pw_shell, p, buflen - len);
+    if (copied == -1) {
+	goto range;
+    }
+    tgtPtr->pw_shell = (copied > 0) ? p : NULL;
+
+    return 0;
+}
+#endif /* NEED_COPYPWD */
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * CopyArray --
+ *
+ *      Copies array of NULL-terminated or fixed-length strings to the private
+ *      buffer, honouring the size of the buffer.
+ *
+ * Results:
+ *      Number of bytes copied on success or -1 on error (errno = ERANGE)
+ *
+ * Side effects:
+ *      None.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+#ifdef NEED_COPYARRAY
+static int
+CopyArray(
+    char **src,			/* Array of elements to copy. */
+    int elsize,			/* Size of each element, or -1 to indicate
+				 * that they are C strings of dynamic
+				 * length. */
+    char *buf,			/* Buffer to copy into. */
+    int buflen)			/* Size of buffer. */
+{
+    int i, j, len = 0;
+    char *p, **new;
+
+    if (src == NULL) {
+	return 0;
+    }
+
+    for (i = 0; src[i] != NULL; i++) {
+	/*
+	 * Empty loop to count how many.
+	 */
+    }
+    len = sizeof(char *) * (i + 1);	/* Leave place for the array. */
+    if (len >  buflen) {
+	return -1;
+    }
+
+    new = (char **) buf;
+    p = buf + len;
+
+    for (j = 0; j < i; j++) {
+	int sz = (elsize<0 ? (int) strlen(src[j]) + 1 : elsize);
+
+	len += sz;
+	if (len > buflen) {
+	    return -1;
+	}
+	memcpy(p, src[j], sz);
+	new[j] = p;
+	p = buf + len;
+    }
+    new[j] = NULL;
+
+    return len;
+}
+#endif /* NEED_COPYARRAY */
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * CopyString --
+ *
+ *      Copies a NULL-terminated string to the private buffer, honouring the
+ *      size of the buffer
+ *
+ * Results:
+ *      0 success or -1 on error (errno = ERANGE)
+ *
+ * Side effects:
+ *      None
+ *
+ *---------------------------------------------------------------------------
+ */
+
+#ifdef NEED_COPYSTRING
+static int
+CopyString(
+    const char *src,		/* String to copy. */
+    char *buf,			/* Buffer to copy into. */
+    int buflen)			/* Size of buffer. */
+{
+    int len = 0;
+
+    if (src != NULL) {
+	len = strlen(src) + 1;
+	if (len > buflen) {
+	    return -1;
+	}
+	memcpy(buf, src, len);
+    }
+
+    return len;
+}
+#endif /* NEED_COPYSTRING */
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
+
+/*
+ *------------------------------------------------------------------------
+ *
+ * TclWinCPUID --
+ *
+ *	Get CPU ID information on an Intel box under UNIX (either Linux or Cygwin)
+ *
+ * Results:
+ *	Returns TCL_OK if successful, TCL_ERROR if CPUID is not supported.
+ *
+ * Side effects:
+ *	If successful, stores EAX, EBX, ECX and EDX registers after the CPUID
+ *	instruction in the four integers designated by 'regsPtr'
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclWinCPUID(
+    unsigned int index,		/* Which CPUID value to retrieve. */
+    unsigned int *regsPtr)	/* Registers after the CPUID. */
+{
+    int status = TCL_ERROR;
+
+    /* See: <http://en.wikipedia.org/wiki/CPUID> */
+#if defined(HAVE_CPUID)
+#if defined(__x86_64__) || defined(_M_AMD64) || defined (_M_X64)
+    __asm__ __volatile__("movq %%rbx, %%rsi     \n\t" /* save %rbx */
+                 "cpuid            \n\t"
+                 "xchgq %%rsi, %%rbx   \n\t" /* restore the old %rbx */
+                 : "=a"(regsPtr[0]), "=S"(regsPtr[1]), "=c"(regsPtr[2]), "=d"(regsPtr[3])
+                 : "a"(index));
+#else
+    __asm__ __volatile__("mov %%ebx, %%esi     \n\t" /* save %ebx */
+                 "cpuid            \n\t"
+                 "xchg %%esi, %%ebx   \n\t" /* restore the old %ebx */
+                 : "=a"(regsPtr[0]), "=S"(regsPtr[1]), "=c"(regsPtr[2]), "=d"(regsPtr[3])
+                 : "a"(index));
+#endif
+    status = TCL_OK;
+#endif
+    return status;
+}
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/tcl8.6/unix/tclUnixEvent.c b/tcl8.6/unix/tclUnixEvent.c
new file mode 100644
index 0000000..40aac6f
--- /dev/null
+++ b/tcl8.6/unix/tclUnixEvent.c
@@ -0,0 +1,95 @@
+/*
+ * tclUnixEvent.c --
+ *
+ *	This file implements Unix specific event related routines.
+ *
+ * Copyright (c) 1997 by Sun Microsystems, Inc.
+ *
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ */
+
+#include "tclInt.h"
+#ifndef HAVE_COREFOUNDATION	/* Darwin/Mac OS X CoreFoundation notifier is
+				 * in tclMacOSXNotify.c */
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_Sleep --
+ *
+ *	Delay execution for the specified number of milliseconds.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Time passes.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+Tcl_Sleep(
+    int ms)			/* Number of milliseconds to sleep. */
+{
+    struct timeval delay;
+    Tcl_Time before, after, vdelay;
+
+    /*
+     * The only trick here is that select appears to return early under some
+     * conditions, so we have to check to make sure that the right amount of
+     * time really has elapsed.  If it's too early, go back to sleep again.
+     */
+
+    Tcl_GetTime(&before);
+    after = before;
+    after.sec += ms/1000;
+    after.usec += (ms%1000)*1000;
+    if (after.usec > 1000000) {
+	after.usec -= 1000000;
+	after.sec += 1;
+    }
+    while (1) {
+	/*
+	 * TIP #233: Scale from virtual time to real-time for select.
+	 */
+
+	vdelay.sec  = after.sec  - before.sec;
+	vdelay.usec = after.usec - before.usec;
+
+	if (vdelay.usec < 0) {
+	    vdelay.usec += 1000000;
+	    vdelay.sec  -= 1;
+	}
+
+	if ((vdelay.sec != 0) || (vdelay.usec != 0)) {
+	    tclScaleTimeProcPtr(&vdelay, tclTimeClientData);
+	}
+
+	delay.tv_sec  = vdelay.sec;
+	delay.tv_usec = vdelay.usec;
+
+	/*
+	 * Special note: must convert delay.tv_sec to int before comparing to
+	 * zero, since delay.tv_usec is unsigned on some platforms.
+	 */
+
+	if ((((int) delay.tv_sec) < 0)
+		|| ((delay.tv_usec == 0) && (delay.tv_sec == 0))) {
+	    break;
+	}
+	(void) select(0, (SELECT_MASK *) 0, (SELECT_MASK *) 0,
+		(SELECT_MASK *) 0, &delay);
+	Tcl_GetTime(&before);
+    }
+}
+
+#endif /* HAVE_COREFOUNDATION */
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/tcl8.6/unix/tclUnixFCmd.c b/tcl8.6/unix/tclUnixFCmd.c
new file mode 100644
index 0000000..ae20ee0
--- /dev/null
+++ b/tcl8.6/unix/tclUnixFCmd.c
@@ -0,0 +1,2517 @@
+/*
+ * tclUnixFCmd.c
+ *
+ *	This file implements the unix specific portion of file manipulation
+ *	subcommands of the "file" command. All filename arguments should
+ *	already be translated to native format.
+ *
+ * Copyright (c) 1996-1998 Sun Microsystems, Inc.
+ *
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ *
+ * Portions of this code were derived from NetBSD source code which has the
+ * following copyright notice:
+ *
+ * Copyright (c) 1988, 1993, 1994
+ *      The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors may
+ *    be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ */
+
+#include "tclInt.h"
+#include <utime.h>
+#include <grp.h>
+#ifndef HAVE_STRUCT_STAT_ST_BLKSIZE
+#ifndef NO_FSTATFS
+#include <sys/statfs.h>
+#endif
+#endif /* !HAVE_STRUCT_STAT_ST_BLKSIZE */
+#ifdef HAVE_FTS
+#include <fts.h>
+#endif
+
+/*
+ * The following constants specify the type of callback when
+ * TraverseUnixTree() calls the traverseProc()
+ */
+
+#define DOTREE_PRED	1	/* pre-order directory */
+#define DOTREE_POSTD	2	/* post-order directory */
+#define DOTREE_F	3	/* regular file */
+
+/*
+ * Fallback temporary file location the temporary file generation code. Can be
+ * overridden at compile time for when it is known that temp files can't be
+ * written to /tmp (hello, iOS!).
+ */
+
+#ifndef TCL_TEMPORARY_FILE_DIRECTORY
+#define TCL_TEMPORARY_FILE_DIRECTORY	"/tmp"
+#endif
+
+/*
+ * Callbacks for file attributes code.
+ */
+
+static int		GetGroupAttribute(Tcl_Interp *interp, int objIndex,
+			    Tcl_Obj *fileName, Tcl_Obj **attributePtrPtr);
+static int		GetOwnerAttribute(Tcl_Interp *interp, int objIndex,
+			    Tcl_Obj *fileName, Tcl_Obj **attributePtrPtr);
+static int		GetPermissionsAttribute(Tcl_Interp *interp,
+			    int objIndex, Tcl_Obj *fileName,
+			    Tcl_Obj **attributePtrPtr);
+static int		SetGroupAttribute(Tcl_Interp *interp, int objIndex,
+			    Tcl_Obj *fileName, Tcl_Obj *attributePtr);
+static int		SetOwnerAttribute(Tcl_Interp *interp, int objIndex,
+			    Tcl_Obj *fileName, Tcl_Obj *attributePtr);
+static int		SetPermissionsAttribute(Tcl_Interp *interp,
+			    int objIndex, Tcl_Obj *fileName,
+			    Tcl_Obj *attributePtr);
+static int		GetModeFromPermString(Tcl_Interp *interp,
+			    const char *modeStringPtr, mode_t *modePtr);
+#if defined(HAVE_CHFLAGS) && defined(UF_IMMUTABLE) || defined(__CYGWIN__)
+static int		GetUnixFileAttributes(Tcl_Interp *interp, int objIndex,
+			    Tcl_Obj *fileName, Tcl_Obj **attributePtrPtr);
+static int		SetUnixFileAttributes(Tcl_Interp *interp, int objIndex,
+			    Tcl_Obj *fileName, Tcl_Obj *attributePtr);
+#endif
+
+/*
+ * Prototype for the TraverseUnixTree callback function.
+ */
+
+typedef int (TraversalProc)(Tcl_DString *srcPtr, Tcl_DString *dstPtr,
+	const Tcl_StatBuf *statBufPtr, int type, Tcl_DString *errorPtr);
+
+/*
+ * Constants and variables necessary for file attributes subcommand.
+ *
+ * IMPORTANT: The permissions attribute is assumed to be the third item (i.e.
+ * to be indexed with '2' in arrays) in code in tclIOUtil.c and possibly
+ * elsewhere in Tcl's core.
+ */
+
+#ifdef DJGPP
+
+/*
+ * See contrib/djgpp/tclDjgppFCmd.c for definition.
+ */
+
+extern TclFileAttrProcs tclpFileAttrProcs[];
+extern const char *const tclpFileAttrStrings[];
+
+#else /* !DJGPP */
+enum {
+#if defined(__CYGWIN__)
+    UNIX_ARCHIVE_ATTRIBUTE,
+#endif
+    UNIX_GROUP_ATTRIBUTE,
+#if defined(__CYGWIN__)
+    UNIX_HIDDEN_ATTRIBUTE,
+#endif
+    UNIX_OWNER_ATTRIBUTE, UNIX_PERMISSIONS_ATTRIBUTE,
+#if defined(HAVE_CHFLAGS) && defined(UF_IMMUTABLE) || defined(__CYGWIN__)
+    UNIX_READONLY_ATTRIBUTE,
+#endif
+#if defined(__CYGWIN__)
+    UNIX_SYSTEM_ATTRIBUTE,
+#endif
+#ifdef MAC_OSX_TCL
+    MACOSX_CREATOR_ATTRIBUTE, MACOSX_TYPE_ATTRIBUTE, MACOSX_HIDDEN_ATTRIBUTE,
+    MACOSX_RSRCLENGTH_ATTRIBUTE,
+#endif
+    UNIX_INVALID_ATTRIBUTE /* lint - last enum value needs no trailing , */
+};
+
+MODULE_SCOPE const char *const tclpFileAttrStrings[];
+const char *const tclpFileAttrStrings[] = {
+#if defined(__CYGWIN__)
+    "-archive",
+#endif
+    "-group",
+#if defined(__CYGWIN__)
+    "-hidden",
+#endif
+    "-owner", "-permissions",
+#if defined(HAVE_CHFLAGS) && defined(UF_IMMUTABLE) || defined(__CYGWIN__)
+    "-readonly",
+#endif
+#if defined(__CYGWIN__)
+    "-system",
+#endif
+#ifdef MAC_OSX_TCL
+    "-creator", "-type", "-hidden", "-rsrclength",
+#endif
+    NULL
+};
+
+MODULE_SCOPE const TclFileAttrProcs tclpFileAttrProcs[];
+const TclFileAttrProcs tclpFileAttrProcs[] = {
+#if defined(__CYGWIN__)
+    {GetUnixFileAttributes, SetUnixFileAttributes},
+#endif
+    {GetGroupAttribute, SetGroupAttribute},
+#if defined(__CYGWIN__)
+    {GetUnixFileAttributes, SetUnixFileAttributes},
+#endif
+    {GetOwnerAttribute, SetOwnerAttribute},
+    {GetPermissionsAttribute, SetPermissionsAttribute},
+#if defined(HAVE_CHFLAGS) && defined(UF_IMMUTABLE) || defined(__CYGWIN__)
+    {GetUnixFileAttributes, SetUnixFileAttributes},
+#endif
+#if defined(__CYGWIN__)
+    {GetUnixFileAttributes, SetUnixFileAttributes},
+#endif
+#ifdef MAC_OSX_TCL
+    {TclMacOSXGetFileAttribute,	TclMacOSXSetFileAttribute},
+    {TclMacOSXGetFileAttribute,	TclMacOSXSetFileAttribute},
+    {TclMacOSXGetFileAttribute,	TclMacOSXSetFileAttribute},
+    {TclMacOSXGetFileAttribute,	TclMacOSXSetFileAttribute},
+#endif
+};
+#endif /* DJGPP */
+
+/*
+ * This is the maximum number of consecutive readdir/unlink calls that can be
+ * made (with no intervening rewinddir or closedir/opendir) before triggering
+ * a bug that makes readdir return NULL even though some directory entries
+ * have not been processed. The bug afflicts SunOS's readdir when applied to
+ * ufs file systems and Darwin 6.5's (and OSX v.10.3.8's) HFS+. JH found the
+ * Darwin readdir to reset at 147, so 130 is chosen to be conservative. We
+ * can't do a general rewind on failure as NFS can create special files that
+ * recreate themselves when you try and delete them. 8.4.8 added a solution
+ * that was affected by a single such NFS file, this solution should not be
+ * affected by less than THRESHOLD such files. [Bug 1034337]
+ */
+
+#define MAX_READDIR_UNLINK_THRESHOLD 130
+
+/*
+ * Declarations for local procedures defined in this file:
+ */
+
+static int		CopyFileAtts(const char *src,
+			    const char *dst, const Tcl_StatBuf *statBufPtr);
+static const char *	DefaultTempDir(void);
+static int		DoCopyFile(const char *srcPtr, const char *dstPtr,
+			    const Tcl_StatBuf *statBufPtr);
+static int		DoCreateDirectory(const char *pathPtr);
+static int		DoRemoveDirectory(Tcl_DString *pathPtr,
+			    int recursive, Tcl_DString *errorPtr);
+static int		DoRenameFile(const char *src, const char *dst);
+static int		TraversalCopy(Tcl_DString *srcPtr,
+			    Tcl_DString *dstPtr,
+			    const Tcl_StatBuf *statBufPtr, int type,
+			    Tcl_DString *errorPtr);
+static int		TraversalDelete(Tcl_DString *srcPtr,
+			    Tcl_DString *dstPtr,
+			    const Tcl_StatBuf *statBufPtr, int type,
+			    Tcl_DString *errorPtr);
+static int		TraverseUnixTree(TraversalProc *traversalProc,
+			    Tcl_DString *sourcePtr, Tcl_DString *destPtr,
+			    Tcl_DString *errorPtr, int doRewind);
+
+#ifdef PURIFY
+/*
+ * realpath and purify don't mix happily. It has been noted that realpath
+ * should not be used with purify because of bogus warnings, but just
+ * memset'ing the resolved path will squelch those. This assumes we are
+ * passing the standard MAXPATHLEN size resolved arg.
+ */
+
+static char *		Realpath(const char *path, char *resolved);
+
+char *
+Realpath(
+    const char *path,
+    char *resolved)
+{
+    memset(resolved, 0, MAXPATHLEN);
+    return realpath(path, resolved);
+}
+#else
+#   define Realpath	realpath
+#endif /* PURIFY */
+
+#ifndef NO_REALPATH
+#if defined(__APPLE__) && defined(TCL_THREADS) && \
+	defined(MAC_OS_X_VERSION_MIN_REQUIRED) && \
+	MAC_OS_X_VERSION_MIN_REQUIRED < 1030
+/*
+ * Prior to Darwin 7, realpath is not thread-safe, c.f. Bug 711232; if we
+ * might potentially be running on pre-10.3 OSX, check Darwin release at
+ * runtime before using realpath.
+ */
+
+MODULE_SCOPE long tclMacOSXDarwinRelease;
+#   define haveRealpath	(tclMacOSXDarwinRelease >= 7)
+#else
+#   define haveRealpath	1
+#endif
+#endif /* NO_REALPATH */
+
+#ifdef HAVE_FTS
+#if defined(HAVE_STRUCT_STAT64) && !defined(__APPLE__)
+/* fts doesn't do stat64 */
+#   define noFtsStat	1
+#elif defined(__APPLE__) && defined(__LP64__) && \
+	defined(MAC_OS_X_VERSION_MIN_REQUIRED) && \
+	MAC_OS_X_VERSION_MIN_REQUIRED < 1050
+/*
+ * Prior to Darwin 9, 64bit fts_open() without FTS_NOSTAT may crash (due to a
+ * 64bit-unsafe ALIGN macro); if we could be running on pre-10.5 OSX, check
+ * Darwin release at runtime and do a separate stat() if necessary.
+ */
+
+MODULE_SCOPE long tclMacOSXDarwinRelease;
+#   define noFtsStat	(tclMacOSXDarwinRelease < 9)
+#else
+#   define noFtsStat	0
+#endif
+#endif /* HAVE_FTS */
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * TclpObjRenameFile, DoRenameFile --
+ *
+ *	Changes the name of an existing file or directory, from src to dst. If
+ *	src and dst refer to the same file or directory, does nothing and
+ *	returns success. Otherwise if dst already exists, it will be deleted
+ *	and replaced by src subject to the following conditions:
+ *	    If src is a directory, dst may be an empty directory.
+ *	    If src is a file, dst may be a file.
+ *	In any other situation where dst already exists, the rename will fail.
+ *
+ * Results:
+ *	If the directory was successfully created, returns TCL_OK. Otherwise
+ *	the return value is TCL_ERROR and errno is set to indicate the error.
+ *	Some possible values for errno are:
+ *
+ *	EACCES:	    src or dst parent directory can't be read and/or written.
+ *	EEXIST:	    dst is a non-empty directory.
+ *	EINVAL:	    src is a root directory or dst is a subdirectory of src.
+ *	EISDIR:	    dst is a directory, but src is not.
+ *	ENOENT:	    src doesn't exist, or src or dst is "".
+ *	ENOTDIR:    src is a directory, but dst is not.
+ *	EXDEV:	    src and dst are on different filesystems.
+ *
+ * Side effects:
+ *	The implementation of rename may allow cross-filesystem renames, but
+ *	the caller should be prepared to emulate it with copy and delete if
+ *	errno is EXDEV.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+int
+TclpObjRenameFile(
+    Tcl_Obj *srcPathPtr,
+    Tcl_Obj *destPathPtr)
+{
+    return DoRenameFile(Tcl_FSGetNativePath(srcPathPtr),
+	    Tcl_FSGetNativePath(destPathPtr));
+}
+
+static int
+DoRenameFile(
+    const char *src,		/* Pathname of file or dir to be renamed
+				 * (native). */
+    const char *dst)		/* New pathname of file or directory
+				 * (native). */
+{
+    if (rename(src, dst) == 0) {			/* INTL: Native. */
+	return TCL_OK;
+    }
+    if (errno == ENOTEMPTY) {
+	errno = EEXIST;
+    }
+
+    /*
+     * IRIX returns EIO when you attept to move a directory into itself. We
+     * just map EIO to EINVAL get the right message on SGI. Most platforms
+     * don't return EIO except in really strange cases.
+     */
+
+    if (errno == EIO) {
+	errno = EINVAL;
+    }
+
+#ifndef NO_REALPATH
+    /*
+     * SunOS 4.1.4 reports overwriting a non-empty directory with a directory
+     * as EINVAL instead of EEXIST (first rule out the correct EINVAL result
+     * code for moving a directory into itself). Must be conditionally
+     * compiled because realpath() not defined on all systems.
+     */
+
+    if (errno == EINVAL && haveRealpath) {
+	char srcPath[MAXPATHLEN], dstPath[MAXPATHLEN];
+	TclDIR *dirPtr;
+	Tcl_DirEntry *dirEntPtr;
+
+	if ((Realpath((char *) src, srcPath) != NULL)	/* INTL: Native. */
+		&& (Realpath((char *) dst, dstPath) != NULL) /* INTL: Native */
+		&& (strncmp(srcPath, dstPath, strlen(srcPath)) != 0)) {
+	    dirPtr = TclOSopendir(dst);			/* INTL: Native. */
+	    if (dirPtr != NULL) {
+		while (1) {
+		    dirEntPtr = TclOSreaddir(dirPtr);	/* INTL: Native. */
+		    if (dirEntPtr == NULL) {
+			break;
+		    }
+		    if ((strcmp(dirEntPtr->d_name, ".") != 0) &&
+			    (strcmp(dirEntPtr->d_name, "..") != 0)) {
+			errno = EEXIST;
+			TclOSclosedir(dirPtr);
+			return TCL_ERROR;
+		    }
+		}
+		TclOSclosedir(dirPtr);
+	    }
+	}
+	errno = EINVAL;
+    }
+#endif	/* !NO_REALPATH */
+
+    if (strcmp(src, "/") == 0) {
+	/*
+	 * Alpha reports renaming / as EBUSY and Linux reports it as EACCES,
+	 * instead of EINVAL.
+	 */
+
+	errno = EINVAL;
+    }
+
+    /*
+     * DEC Alpha OSF1 V3.0 returns EACCES when attempting to move a file
+     * across filesystems and the parent directory of that file is not
+     * writable. Most other systems return EXDEV. Does nothing to correct this
+     * behavior.
+     */
+
+    return TCL_ERROR;
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * TclpObjCopyFile, DoCopyFile --
+ *
+ *	Copy a single file (not a directory). If dst already exists and is not
+ *	a directory, it is removed.
+ *
+ * Results:
+ *	If the file was successfully copied, returns TCL_OK. Otherwise the
+ *	return value is TCL_ERROR and errno is set to indicate the error. Some
+ *	possible values for errno are:
+ *
+ *	EACCES:	    src or dst parent directory can't be read and/or written.
+ *	EISDIR:	    src or dst is a directory.
+ *	ENOENT:	    src doesn't exist. src or dst is "".
+ *
+ * Side effects:
+ *	This procedure will also copy symbolic links, block, and character
+ *	devices, and fifos. For symbolic links, the links themselves will be
+ *	copied and not what they point to. For the other special file types,
+ *	the directory entry will be copied and not the contents of the device
+ *	that it refers to.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+int
+TclpObjCopyFile(
+    Tcl_Obj *srcPathPtr,
+    Tcl_Obj *destPathPtr)
+{
+    const char *src = Tcl_FSGetNativePath(srcPathPtr);
+    Tcl_StatBuf srcStatBuf;
+
+    if (TclOSlstat(src, &srcStatBuf) != 0) {		/* INTL: Native. */
+	return TCL_ERROR;
+    }
+
+    return DoCopyFile(src, Tcl_FSGetNativePath(destPathPtr), &srcStatBuf);
+}
+
+static int
+DoCopyFile(
+    const char *src,		/* Pathname of file to be copied (native). */
+    const char *dst,		/* Pathname of file to copy to (native). */
+    const Tcl_StatBuf *statBufPtr)
+				/* Used to determine filetype. */
+{
+    Tcl_StatBuf dstStatBuf;
+
+    if (S_ISDIR(statBufPtr->st_mode)) {
+	errno = EISDIR;
+	return TCL_ERROR;
+    }
+
+    /*
+     * Symlink, and some of the other calls will fail if the target exists, so
+     * we remove it first.
+     */
+
+    if (TclOSlstat(dst, &dstStatBuf) == 0) {		/* INTL: Native. */
+	if (S_ISDIR(dstStatBuf.st_mode)) {
+	    errno = EISDIR;
+	    return TCL_ERROR;
+	}
+    }
+    if (unlink(dst) != 0) {				/* INTL: Native. */
+	if (errno != ENOENT) {
+	    return TCL_ERROR;
+	}
+    }
+
+    switch ((int) (statBufPtr->st_mode & S_IFMT)) {
+#ifndef DJGPP
+    case S_IFLNK: {
+	char linkBuf[MAXPATHLEN+1];
+	int length;
+
+	length = readlink(src, linkBuf, MAXPATHLEN);
+							/* INTL: Native. */
+	if (length == -1) {
+	    return TCL_ERROR;
+	}
+	linkBuf[length] = '\0';
+	if (symlink(linkBuf, dst) < 0) {		/* INTL: Native. */
+	    return TCL_ERROR;
+	}
+#ifdef MAC_OSX_TCL
+	TclMacOSXCopyFileAttributes(src, dst, statBufPtr);
+#endif
+	break;
+    }
+#endif /* !DJGPP */
+    case S_IFBLK:
+    case S_IFCHR:
+	if (mknod(dst, statBufPtr->st_mode,		/* INTL: Native. */
+		statBufPtr->st_rdev) < 0) {
+	    return TCL_ERROR;
+	}
+	return CopyFileAtts(src, dst, statBufPtr);
+    case S_IFIFO:
+	if (mkfifo(dst, statBufPtr->st_mode) < 0) {	/* INTL: Native. */
+	    return TCL_ERROR;
+	}
+	return CopyFileAtts(src, dst, statBufPtr);
+    default:
+	return TclUnixCopyFile(src, dst, statBufPtr, 0);
+    }
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclUnixCopyFile -
+ *
+ *	Helper function for TclpCopyFile. Copies one regular file, using
+ *	read() and write().
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	A file is copied. Dst will be overwritten if it exists.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclUnixCopyFile(
+    const char *src,		/* Pathname of file to copy (native). */
+    const char *dst,		/* Pathname of file to create/overwrite
+				 * (native). */
+    const Tcl_StatBuf *statBufPtr,
+				/* Used to determine mode and blocksize. */
+    int dontCopyAtts)		/* If flag set, don't copy attributes. */
+{
+    int srcFd, dstFd;
+    unsigned blockSize;		/* Optimal I/O blocksize for filesystem */
+    char *buffer;		/* Data buffer for copy */
+    size_t nread;
+
+#ifdef DJGPP
+#define BINMODE |O_BINARY
+#else
+#define BINMODE
+#endif /* DJGPP */
+
+#define DEFAULT_COPY_BLOCK_SIZE 4096
+
+    if ((srcFd = TclOSopen(src, O_RDONLY BINMODE, 0)) < 0) { /* INTL: Native */
+	return TCL_ERROR;
+    }
+
+    dstFd = TclOSopen(dst, O_CREAT|O_TRUNC|O_WRONLY BINMODE, /* INTL: Native */
+	    statBufPtr->st_mode);
+    if (dstFd < 0) {
+	close(srcFd);
+	return TCL_ERROR;
+    }
+
+    /*
+     * Try to work out the best size of buffer to use for copying. If we
+     * can't, it's no big deal as we can just use a (32-bit) page, since
+     * that's likely to be fairly efficient anyway.
+     */
+
+#ifdef HAVE_STRUCT_STAT_ST_BLKSIZE
+    blockSize = statBufPtr->st_blksize;
+#elif !defined(NO_FSTATFS)
+    {
+	struct statfs fs;
+
+	if (fstatfs(srcFd, &fs) == 0) {
+	    blockSize = fs.f_bsize;
+	} else {
+	    blockSize = DEFAULT_COPY_BLOCK_SIZE;
+	}
+    }
+#else
+    blockSize = DEFAULT_COPY_BLOCK_SIZE;
+#endif /* HAVE_STRUCT_STAT_ST_BLKSIZE */
+
+    /*
+     * [SF Tcl Bug 1586470] Even if we HAVE_STRUCT_STAT_ST_BLKSIZE, there are
+     * filesystems which report a bogus value for the blocksize. An example
+     * is the Andrew Filesystem (afs), reporting a blocksize of 0. When
+     * detecting such a situation we now simply fall back to a hardwired
+     * default size.
+     */
+
+    if (blockSize <= 0) {
+	blockSize = DEFAULT_COPY_BLOCK_SIZE;
+    }
+    buffer = ckalloc(blockSize);
+    while (1) {
+	nread = (size_t) read(srcFd, buffer, blockSize);
+	if ((nread == (size_t) -1) || (nread == 0)) {
+	    break;
+	}
+	if ((size_t) write(dstFd, buffer, nread) != nread) {
+	    nread = (size_t) -1;
+	    break;
+	}
+    }
+
+    ckfree(buffer);
+    close(srcFd);
+    if ((close(dstFd) != 0) || (nread == (size_t) -1)) {
+	unlink(dst);					/* INTL: Native. */
+	return TCL_ERROR;
+    }
+    if (!dontCopyAtts && CopyFileAtts(src, dst, statBufPtr) == TCL_ERROR) {
+	/*
+	 * The copy succeeded, but setting the permissions failed, so be in a
+	 * consistent state, we remove the file that was created by the copy.
+	 */
+
+	unlink(dst);					/* INTL: Native. */
+	return TCL_ERROR;
+    }
+    return TCL_OK;
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * TclpObjDeleteFile, TclpDeleteFile --
+ *
+ *	Removes a single file (not a directory).
+ *
+ * Results:
+ *	If the file was successfully deleted, returns TCL_OK. Otherwise the
+ *	return value is TCL_ERROR and errno is set to indicate the error. Some
+ *	possible values for errno are:
+ *
+ *	EACCES:	    a parent directory can't be read and/or written.
+ *	EISDIR:	    path is a directory.
+ *	ENOENT:	    path doesn't exist or is "".
+ *
+ * Side effects:
+ *	The file is deleted, even if it is read-only.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+int
+TclpObjDeleteFile(
+    Tcl_Obj *pathPtr)
+{
+    return TclpDeleteFile(Tcl_FSGetNativePath(pathPtr));
+}
+
+int
+TclpDeleteFile(
+    const void *path)		/* Pathname of file to be removed (native). */
+{
+    if (unlink((const char *)path) != 0) {
+	return TCL_ERROR;
+    }
+    return TCL_OK;
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * TclpCreateDirectory, DoCreateDirectory --
+ *
+ *	Creates the specified directory. All parent directories of the
+ *	specified directory must already exist. The directory is automatically
+ *	created with permissions so that user can access the new directory and
+ *	create new files or subdirectories in it.
+ *
+ * Results:
+ *	If the directory was successfully created, returns TCL_OK. Otherwise
+ *	the return value is TCL_ERROR and errno is set to indicate the error.
+ *	Some possible values for errno are:
+ *
+ *	EACCES:	    a parent directory can't be read and/or written.
+ *	EEXIST:	    path already exists.
+ *	ENOENT:	    a parent directory doesn't exist.
+ *
+ * Side effects:
+ *	A directory is created with the current umask, except that permission
+ *	for u+rwx will always be added.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+int
+TclpObjCreateDirectory(
+    Tcl_Obj *pathPtr)
+{
+    return DoCreateDirectory(Tcl_FSGetNativePath(pathPtr));
+}
+
+static int
+DoCreateDirectory(
+    const char *path)		/* Pathname of directory to create (native). */
+{
+    mode_t mode;
+
+    mode = umask(0);
+    umask(mode);
+
+    /*
+     * umask return value is actually the inverse of the permissions.
+     */
+
+    mode = (0777 & ~mode) | S_IRUSR | S_IWUSR | S_IXUSR;
+
+    if (mkdir(path, mode) != 0) {			/* INTL: Native. */
+	return TCL_ERROR;
+    }
+    return TCL_OK;
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * TclpObjCopyDirectory --
+ *
+ *	Recursively copies a directory. The target directory dst must not
+ *	already exist. Note that this function does not merge two directory
+ *	hierarchies, even if the target directory is an an empty directory.
+ *
+ * Results:
+ *	If the directory was successfully copied, returns TCL_OK. Otherwise
+ *	the return value is TCL_ERROR, errno is set to indicate the error, and
+ *	the pathname of the file that caused the error is stored in errorPtr.
+ *	See TclpObjCreateDirectory and TclpObjCopyFile for a description of
+ *	possible values for errno.
+ *
+ * Side effects:
+ *	An exact copy of the directory hierarchy src will be created with the
+ *	name dst. If an error occurs, the error will be returned immediately,
+ *	and remaining files will not be processed.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+int
+TclpObjCopyDirectory(
+    Tcl_Obj *srcPathPtr,
+    Tcl_Obj *destPathPtr,
+    Tcl_Obj **errorPtr)
+{
+    Tcl_DString ds;
+    Tcl_DString srcString, dstString;
+    int ret;
+    Tcl_Obj *transPtr;
+
+    transPtr = Tcl_FSGetTranslatedPath(NULL,srcPathPtr);
+    Tcl_UtfToExternalDString(NULL,
+	    (transPtr != NULL ? TclGetString(transPtr) : NULL),
+	    -1, &srcString);
+    if (transPtr != NULL) {
+	Tcl_DecrRefCount(transPtr);
+    }
+    transPtr = Tcl_FSGetTranslatedPath(NULL,destPathPtr);
+    Tcl_UtfToExternalDString(NULL,
+	    (transPtr != NULL ? TclGetString(transPtr) : NULL),
+	    -1, &dstString);
+    if (transPtr != NULL) {
+	Tcl_DecrRefCount(transPtr);
+    }
+
+    ret = TraverseUnixTree(TraversalCopy, &srcString, &dstString, &ds, 0);
+
+    Tcl_DStringFree(&srcString);
+    Tcl_DStringFree(&dstString);
+
+    if (ret != TCL_OK) {
+	*errorPtr = Tcl_NewStringObj(Tcl_DStringValue(&ds), -1);
+	Tcl_DStringFree(&ds);
+	Tcl_IncrRefCount(*errorPtr);
+    }
+    return ret;
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * TclpRemoveDirectory, DoRemoveDirectory --
+ *
+ *	Removes directory (and its contents, if the recursive flag is set).
+ *
+ * Results:
+ *	If the directory was successfully removed, returns TCL_OK. Otherwise
+ *	the return value is TCL_ERROR, errno is set to indicate the error, and
+ *	the pathname of the file that caused the error is stored in errorPtr.
+ *	Some possible values for errno are:
+ *
+ *	EACCES:	    path directory can't be read and/or written.
+ *	EEXIST:	    path is a non-empty directory.
+ *	EINVAL:	    path is a root directory.
+ *	ENOENT:	    path doesn't exist or is "".
+ * 	ENOTDIR:    path is not a directory.
+ *
+ * Side effects:
+ *	Directory removed. If an error occurs, the error will be returned
+ *	immediately, and remaining files will not be deleted.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+int
+TclpObjRemoveDirectory(
+    Tcl_Obj *pathPtr,
+    int recursive,
+    Tcl_Obj **errorPtr)
+{
+    Tcl_DString ds;
+    Tcl_DString pathString;
+    int ret;
+    Tcl_Obj *transPtr = Tcl_FSGetTranslatedPath(NULL, pathPtr);
+
+    Tcl_UtfToExternalDString(NULL,
+	    (transPtr != NULL ? TclGetString(transPtr) : NULL),
+	    -1, &pathString);
+    if (transPtr != NULL) {
+	Tcl_DecrRefCount(transPtr);
+    }
+    ret = DoRemoveDirectory(&pathString, recursive, &ds);
+    Tcl_DStringFree(&pathString);
+
+    if (ret != TCL_OK) {
+	*errorPtr = Tcl_NewStringObj(Tcl_DStringValue(&ds), -1);
+	Tcl_DStringFree(&ds);
+	Tcl_IncrRefCount(*errorPtr);
+    }
+    return ret;
+}
+
+static int
+DoRemoveDirectory(
+    Tcl_DString *pathPtr,	/* Pathname of directory to be removed
+				 * (native). */
+    int recursive,		/* If non-zero, removes directories that are
+				 * nonempty. Otherwise, will only remove empty
+				 * directories. */
+    Tcl_DString *errorPtr)	/* If non-NULL, uninitialized or free DString
+				 * filled with UTF-8 name of file causing
+				 * error. */
+{
+    const char *path;
+    mode_t oldPerm = 0;
+    int result;
+
+    path = Tcl_DStringValue(pathPtr);
+
+    if (recursive != 0) {
+	/*
+	 * We should try to change permissions so this can be deleted.
+	 */
+
+	Tcl_StatBuf statBuf;
+	int newPerm;
+
+	if (TclOSstat(path, &statBuf) == 0) {
+	    oldPerm = (mode_t) (statBuf.st_mode & 0x00007FFF);
+	}
+
+	newPerm = oldPerm | (64+128+256);
+	chmod(path, (mode_t) newPerm);
+    }
+
+    if (rmdir(path) == 0) {				/* INTL: Native. */
+	return TCL_OK;
+    }
+    if (errno == ENOTEMPTY) {
+	errno = EEXIST;
+    }
+
+    result = TCL_OK;
+    if ((errno != EEXIST) || (recursive == 0)) {
+	if (errorPtr != NULL) {
+	    Tcl_ExternalToUtfDString(NULL, path, -1, errorPtr);
+	}
+	result = TCL_ERROR;
+    }
+
+    /*
+     * The directory is nonempty, but the recursive flag has been specified,
+     * so we recursively remove all the files in the directory.
+     */
+
+    if (result == TCL_OK) {
+	result = TraverseUnixTree(TraversalDelete, pathPtr, NULL, errorPtr, 1);
+    }
+
+    if ((result != TCL_OK) && (recursive != 0)) {
+	/*
+	 * Try to restore permissions.
+	 */
+
+	chmod(path, oldPerm);
+    }
+    return result;
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * TraverseUnixTree --
+ *
+ *	Traverse directory tree specified by sourcePtr, calling the function
+ *	traverseProc for each file and directory encountered. If destPtr is
+ *	non-null, each of name in the sourcePtr directory is appended to the
+ *	directory specified by destPtr and passed as the second argument to
+ *	traverseProc().
+ *
+ * Results:
+ *	Standard Tcl result.
+ *
+ * Side effects:
+ *	None caused by TraverseUnixTree, however the user specified
+ *	traverseProc() may change state. If an error occurs, the error will be
+ *	returned immediately, and remaining files will not be processed.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+static int
+TraverseUnixTree(
+    TraversalProc *traverseProc,/* Function to call for every file and
+				 * directory in source hierarchy. */
+    Tcl_DString *sourcePtr,	/* Pathname of source directory to be
+				 * traversed (native). */
+    Tcl_DString *targetPtr,	/* Pathname of directory to traverse in
+				 * parallel with source directory (native). */
+    Tcl_DString *errorPtr,	/* If non-NULL, uninitialized or free DString
+				 * filled with UTF-8 name of file causing
+				 * error. */
+    int doRewind)		/* Flag indicating that to ensure complete
+    				 * traversal of source hierarchy, the readdir
+    				 * loop should be rewound whenever
+    				 * traverseProc has returned TCL_OK; this is
+    				 * required when traverseProc modifies the
+    				 * source hierarchy, e.g. by deleting
+    				 * files. */
+{
+    Tcl_StatBuf statBuf;
+    const char *source, *errfile;
+    int result, sourceLen;
+    int targetLen;
+#ifndef HAVE_FTS
+    int numProcessed = 0;
+    Tcl_DirEntry *dirEntPtr;
+    TclDIR *dirPtr;
+#else
+    const char *paths[2] = {NULL, NULL};
+    FTS *fts = NULL;
+    FTSENT *ent;
+#endif
+
+    errfile = NULL;
+    result = TCL_OK;
+    targetLen = 0;		/* lint. */
+
+    source = Tcl_DStringValue(sourcePtr);
+    if (TclOSlstat(source, &statBuf) != 0) {		/* INTL: Native. */
+	errfile = source;
+	goto end;
+    }
+    if (!S_ISDIR(statBuf.st_mode)) {
+	/*
+	 * Process the regular file
+	 */
+
+	return traverseProc(sourcePtr, targetPtr, &statBuf, DOTREE_F,
+		errorPtr);
+    }
+#ifndef HAVE_FTS
+    dirPtr = TclOSopendir(source);			/* INTL: Native. */
+    if (dirPtr == NULL) {
+	/*
+	 * Can't read directory
+	 */
+
+	errfile = source;
+	goto end;
+    }
+    result = traverseProc(sourcePtr, targetPtr, &statBuf, DOTREE_PRED,
+	    errorPtr);
+    if (result != TCL_OK) {
+	TclOSclosedir(dirPtr);
+	return result;
+    }
+
+    TclDStringAppendLiteral(sourcePtr, "/");
+    sourceLen = Tcl_DStringLength(sourcePtr);
+
+    if (targetPtr != NULL) {
+	TclDStringAppendLiteral(targetPtr, "/");
+	targetLen = Tcl_DStringLength(targetPtr);
+    }
+
+    while ((dirEntPtr = TclOSreaddir(dirPtr)) != NULL) { /* INTL: Native. */
+	if ((dirEntPtr->d_name[0] == '.')
+		&& ((dirEntPtr->d_name[1] == '\0')
+			|| (strcmp(dirEntPtr->d_name, "..") == 0))) {
+	    continue;
+	}
+
+	/*
+	 * Append name after slash, and recurse on the file.
+	 */
+
+	Tcl_DStringAppend(sourcePtr, dirEntPtr->d_name, -1);
+	if (targetPtr != NULL) {
+	    Tcl_DStringAppend(targetPtr, dirEntPtr->d_name, -1);
+	}
+	result = TraverseUnixTree(traverseProc, sourcePtr, targetPtr,
+		errorPtr, doRewind);
+	if (result != TCL_OK) {
+	    break;
+	} else {
+	    numProcessed++;
+	}
+
+	/*
+	 * Remove name after slash.
+	 */
+
+	Tcl_DStringSetLength(sourcePtr, sourceLen);
+	if (targetPtr != NULL) {
+	    Tcl_DStringSetLength(targetPtr, targetLen);
+	}
+	if (doRewind && (numProcessed > MAX_READDIR_UNLINK_THRESHOLD)) {
+	    /*
+	     * Call rewinddir if we've called unlink or rmdir so many times
+	     * (since the opendir or the previous rewinddir), to avoid a
+	     * NULL-return that may a symptom of a buggy readdir.
+	     */
+
+	    TclOSrewinddir(dirPtr);
+	    numProcessed = 0;
+	}
+    }
+    TclOSclosedir(dirPtr);
+
+    /*
+     * Strip off the trailing slash we added
+     */
+
+    Tcl_DStringSetLength(sourcePtr, sourceLen - 1);
+    if (targetPtr != NULL) {
+	Tcl_DStringSetLength(targetPtr, targetLen - 1);
+    }
+
+    if (result == TCL_OK) {
+	/*
+	 * Call traverseProc() on a directory after visiting all the files in
+	 * that directory.
+	 */
+
+	result = traverseProc(sourcePtr, targetPtr, &statBuf, DOTREE_POSTD,
+		errorPtr);
+    }
+#else /* HAVE_FTS */
+    paths[0] = source;
+    fts = fts_open((char **) paths, FTS_PHYSICAL | FTS_NOCHDIR |
+	    (noFtsStat || doRewind ? FTS_NOSTAT : 0), NULL);
+    if (fts == NULL) {
+	errfile = source;
+	goto end;
+    }
+
+    sourceLen = Tcl_DStringLength(sourcePtr);
+    if (targetPtr != NULL) {
+	targetLen = Tcl_DStringLength(targetPtr);
+    }
+
+    while ((ent = fts_read(fts)) != NULL) {
+	unsigned short info = ent->fts_info;
+	char *path = ent->fts_path + sourceLen;
+	unsigned short pathlen = ent->fts_pathlen - sourceLen;
+	int type;
+	Tcl_StatBuf *statBufPtr = NULL;
+
+	if (info == FTS_DNR || info == FTS_ERR || info == FTS_NS) {
+	    errfile = ent->fts_path;
+	    break;
+	}
+	Tcl_DStringAppend(sourcePtr, path, pathlen);
+	if (targetPtr != NULL) {
+	    Tcl_DStringAppend(targetPtr, path, pathlen);
+	}
+	switch (info) {
+	case FTS_D:
+	    type = DOTREE_PRED;
+	    break;
+	case FTS_DP:
+	    type = DOTREE_POSTD;
+	    break;
+	default:
+	    type = DOTREE_F;
+	    break;
+	}
+	if (!doRewind) { /* no need to stat for delete */
+	    if (noFtsStat) {
+		statBufPtr = &statBuf;
+		if (TclOSlstat(ent->fts_path, statBufPtr) != 0) {
+		    errfile = ent->fts_path;
+		    break;
+		}
+	    } else {
+		statBufPtr = (Tcl_StatBuf *) ent->fts_statp;
+	    }
+	}
+	result = traverseProc(sourcePtr, targetPtr, statBufPtr, type,
+		errorPtr);
+	if (result != TCL_OK) {
+	    break;
+	}
+	Tcl_DStringSetLength(sourcePtr, sourceLen);
+	if (targetPtr != NULL) {
+	    Tcl_DStringSetLength(targetPtr, targetLen);
+	}
+    }
+#endif /* !HAVE_FTS */
+
+  end:
+    if (errfile != NULL) {
+	if (errorPtr != NULL) {
+	    Tcl_ExternalToUtfDString(NULL, errfile, -1, errorPtr);
+	}
+	result = TCL_ERROR;
+    }
+#ifdef HAVE_FTS
+    if (fts != NULL) {
+	fts_close(fts);
+    }
+#endif
+
+    return result;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TraversalCopy
+ *
+ *	Called from TraverseUnixTree in order to execute a recursive copy of a
+ *	directory.
+ *
+ * Results:
+ *	Standard Tcl result.
+ *
+ * Side effects:
+ *	The file or directory src may be copied to dst, depending on the value
+ *	of type.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+TraversalCopy(
+    Tcl_DString *srcPtr,	/* Source pathname to copy (native). */
+    Tcl_DString *dstPtr,	/* Destination pathname of copy (native). */
+    const Tcl_StatBuf *statBufPtr,
+				/* Stat info for file specified by srcPtr. */
+    int type,			/* Reason for call - see TraverseUnixTree(). */
+    Tcl_DString *errorPtr)	/* If non-NULL, uninitialized or free DString
+				 * filled with UTF-8 name of file causing
+				 * error. */
+{
+    switch (type) {
+    case DOTREE_F:
+	if (DoCopyFile(Tcl_DStringValue(srcPtr), Tcl_DStringValue(dstPtr),
+		statBufPtr) == TCL_OK) {
+	    return TCL_OK;
+	}
+	break;
+
+    case DOTREE_PRED:
+	if (DoCreateDirectory(Tcl_DStringValue(dstPtr)) == TCL_OK) {
+	    return TCL_OK;
+	}
+	break;
+
+    case DOTREE_POSTD:
+	if (CopyFileAtts(Tcl_DStringValue(srcPtr),
+		Tcl_DStringValue(dstPtr), statBufPtr) == TCL_OK) {
+	    return TCL_OK;
+	}
+	break;
+    }
+
+    /*
+     * There shouldn't be a problem with src, because we already checked it to
+     * get here.
+     */
+
+    if (errorPtr != NULL) {
+	Tcl_ExternalToUtfDString(NULL, Tcl_DStringValue(dstPtr),
+		Tcl_DStringLength(dstPtr), errorPtr);
+    }
+    return TCL_ERROR;
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * TraversalDelete --
+ *
+ *	Called by procedure TraverseUnixTree for every file and directory that
+ *	it encounters in a directory hierarchy. This procedure unlinks files,
+ *	and removes directories after all the containing files have been
+ *	processed.
+ *
+ * Results:
+ *	Standard Tcl result.
+ *
+ * Side effects:
+ *	Files or directory specified by src will be deleted.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+TraversalDelete(
+    Tcl_DString *srcPtr,	/* Source pathname (native). */
+    Tcl_DString *ignore,	/* Destination pathname (not used). */
+    const Tcl_StatBuf *statBufPtr,
+				/* Stat info for file specified by srcPtr. */
+    int type,			/* Reason for call - see TraverseUnixTree(). */
+    Tcl_DString *errorPtr)	/* If non-NULL, uninitialized or free DString
+				 * filled with UTF-8 name of file causing
+				 * error. */
+{
+    switch (type) {
+    case DOTREE_F:
+	if (TclpDeleteFile(Tcl_DStringValue(srcPtr)) == 0) {
+	    return TCL_OK;
+	}
+	break;
+    case DOTREE_PRED:
+	return TCL_OK;
+    case DOTREE_POSTD:
+	if (DoRemoveDirectory(srcPtr, 0, NULL) == 0) {
+	    return TCL_OK;
+	}
+	break;
+    }
+    if (errorPtr != NULL) {
+	Tcl_ExternalToUtfDString(NULL, Tcl_DStringValue(srcPtr),
+		Tcl_DStringLength(srcPtr), errorPtr);
+    }
+    return TCL_ERROR;
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * CopyFileAtts --
+ *
+ *	Copy the file attributes such as owner, group, permissions, and
+ *	modification date from one file to another.
+ *
+ * Results:
+ *	Standard Tcl result.
+ *
+ * Side effects:
+ *	User id, group id, permission bits, last modification time, and last
+ *	access time are updated in the new file to reflect the old file.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+static int
+CopyFileAtts(
+    const char *src,		/* Path name of source file (native). */
+    const char *dst,		/* Path name of target file (native). */
+    const Tcl_StatBuf *statBufPtr)
+				/* Stat info for source file */
+{
+    struct utimbuf tval;
+    mode_t newMode;
+
+    newMode = statBufPtr->st_mode
+	    & (S_ISUID | S_ISGID | S_IRWXU | S_IRWXG | S_IRWXO);
+
+    /*
+     * Note that if you copy a setuid file that is owned by someone else, and
+     * you are not root, then the copy will be setuid to you. The most correct
+     * implementation would probably be to have the copy not setuid to anyone
+     * if the original file was owned by someone else, but this corner case
+     * isn't currently handled. It would require another lstat(), or getuid().
+     */
+
+    if (chmod(dst, newMode)) {				/* INTL: Native. */
+	newMode &= ~(S_ISUID | S_ISGID);
+	if (chmod(dst, newMode)) {			/* INTL: Native. */
+	    return TCL_ERROR;
+	}
+    }
+
+    tval.actime = statBufPtr->st_atime;
+    tval.modtime = statBufPtr->st_mtime;
+
+    if (utime(dst, &tval)) {				/* INTL: Native. */
+	return TCL_ERROR;
+    }
+#ifdef MAC_OSX_TCL
+    TclMacOSXCopyFileAttributes(src, dst, statBufPtr);
+#endif
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * GetGroupAttribute
+ *
+ *	Gets the group attribute of a file.
+ *
+ * Results:
+ *	Standard TCL result. Returns a new Tcl_Obj in attributePtrPtr if there
+ *	is no error.
+ *
+ * Side effects:
+ *	A new object is allocated.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+GetGroupAttribute(
+    Tcl_Interp *interp,		/* The interp we are using for errors. */
+    int objIndex,		/* The index of the attribute. */
+    Tcl_Obj *fileName,		/* The name of the file (UTF-8). */
+    Tcl_Obj **attributePtrPtr)	/* A pointer to return the object with. */
+{
+    Tcl_StatBuf statBuf;
+    struct group *groupPtr;
+    int result;
+
+    result = TclpObjStat(fileName, &statBuf);
+
+    if (result != 0) {
+	if (interp != NULL) {
+	    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+		    "could not read \"%s\": %s",
+		    TclGetString(fileName), Tcl_PosixError(interp)));
+	}
+	return TCL_ERROR;
+    }
+
+    groupPtr = TclpGetGrGid(statBuf.st_gid);
+
+    if (groupPtr == NULL) {
+	*attributePtrPtr = Tcl_NewIntObj((int) statBuf.st_gid);
+    } else {
+	Tcl_DString ds;
+	const char *utf;
+
+	utf = Tcl_ExternalToUtfDString(NULL, groupPtr->gr_name, -1, &ds);
+	*attributePtrPtr = Tcl_NewStringObj(utf, -1);
+	Tcl_DStringFree(&ds);
+    }
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * GetOwnerAttribute
+ *
+ *	Gets the owner attribute of a file.
+ *
+ * Results:
+ *	Standard TCL result. Returns a new Tcl_Obj in attributePtrPtr if there
+ *	is no error.
+ *
+ * Side effects:
+ *	A new object is allocated.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+GetOwnerAttribute(
+    Tcl_Interp *interp,		/* The interp we are using for errors. */
+    int objIndex,		/* The index of the attribute. */
+    Tcl_Obj *fileName,		/* The name of the file (UTF-8). */
+    Tcl_Obj **attributePtrPtr)	/* A pointer to return the object with. */
+{
+    Tcl_StatBuf statBuf;
+    struct passwd *pwPtr;
+    int result;
+
+    result = TclpObjStat(fileName, &statBuf);
+
+    if (result != 0) {
+	if (interp != NULL) {
+	    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+		    "could not read \"%s\": %s",
+		    TclGetString(fileName), Tcl_PosixError(interp)));
+	}
+	return TCL_ERROR;
+    }
+
+    pwPtr = TclpGetPwUid(statBuf.st_uid);
+
+    if (pwPtr == NULL) {
+	*attributePtrPtr = Tcl_NewIntObj((int) statBuf.st_uid);
+    } else {
+	Tcl_DString ds;
+
+	(void) Tcl_ExternalToUtfDString(NULL, pwPtr->pw_name, -1, &ds);
+	*attributePtrPtr = TclDStringToObj(&ds);
+    }
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * GetPermissionsAttribute
+ *
+ *	Gets the group attribute of a file.
+ *
+ * Results:
+ *	Standard TCL result. Returns a new Tcl_Obj in attributePtrPtr if there
+ *	is no error. The object will have ref count 0.
+ *
+ * Side effects:
+ *	A new object is allocated.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+GetPermissionsAttribute(
+    Tcl_Interp *interp,		    /* The interp we are using for errors. */
+    int objIndex,		    /* The index of the attribute. */
+    Tcl_Obj *fileName,		    /* The name of the file (UTF-8). */
+    Tcl_Obj **attributePtrPtr)	    /* A pointer to return the object with. */
+{
+    Tcl_StatBuf statBuf;
+    int result;
+
+    result = TclpObjStat(fileName, &statBuf);
+
+    if (result != 0) {
+	if (interp != NULL) {
+	    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+		    "could not read \"%s\": %s",
+		    TclGetString(fileName), Tcl_PosixError(interp)));
+	}
+	return TCL_ERROR;
+    }
+
+    *attributePtrPtr = Tcl_ObjPrintf(
+	    "%0#5lo", (long) (statBuf.st_mode & 0x00007FFF));
+    return TCL_OK;
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * SetGroupAttribute --
+ *
+ *	Sets the group of the file to the specified group.
+ *
+ * Results:
+ *	Standard TCL result.
+ *
+ * Side effects:
+ *	As above.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+static int
+SetGroupAttribute(
+    Tcl_Interp *interp,		/* The interp for error reporting. */
+    int objIndex,		/* The index of the attribute. */
+    Tcl_Obj *fileName,		/* The name of the file (UTF-8). */
+    Tcl_Obj *attributePtr)	/* New group for file. */
+{
+    long gid;
+    int result;
+    const char *native;
+
+    if (Tcl_GetLongFromObj(NULL, attributePtr, &gid) != TCL_OK) {
+	Tcl_DString ds;
+	struct group *groupPtr = NULL;
+	const char *string;
+	int length;
+
+	string = Tcl_GetStringFromObj(attributePtr, &length);
+
+	native = Tcl_UtfToExternalDString(NULL, string, length, &ds);
+	groupPtr = TclpGetGrNam(native); /* INTL: Native. */
+	Tcl_DStringFree(&ds);
+
+	if (groupPtr == NULL) {
+	    if (interp != NULL) {
+		Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+			"could not set group for file \"%s\":"
+			" group \"%s\" does not exist",
+			TclGetString(fileName), string));
+		Tcl_SetErrorCode(interp, "TCL", "OPERATION", "SETGRP",
+			"NO_GROUP", NULL);
+	    }
+	    return TCL_ERROR;
+	}
+	gid = groupPtr->gr_gid;
+    }
+
+    native = Tcl_FSGetNativePath(fileName);
+    result = chown(native, (uid_t) -1, (gid_t) gid);	/* INTL: Native. */
+
+    if (result != 0) {
+	if (interp != NULL) {
+	    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+		    "could not set group for file \"%s\": %s",
+		    TclGetString(fileName), Tcl_PosixError(interp)));
+	}
+	return TCL_ERROR;
+    }
+    return TCL_OK;
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * SetOwnerAttribute --
+ *
+ *	Sets the owner of the file to the specified owner.
+ *
+ * Results:
+ *	Standard TCL result.
+ *
+ * Side effects:
+ *	As above.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+static int
+SetOwnerAttribute(
+    Tcl_Interp *interp,		/* The interp for error reporting. */
+    int objIndex,		/* The index of the attribute. */
+    Tcl_Obj *fileName,		/* The name of the file (UTF-8). */
+    Tcl_Obj *attributePtr)	/* New owner for file. */
+{
+    long uid;
+    int result;
+    const char *native;
+
+    if (Tcl_GetLongFromObj(NULL, attributePtr, &uid) != TCL_OK) {
+	Tcl_DString ds;
+	struct passwd *pwPtr = NULL;
+	const char *string;
+	int length;
+
+	string = Tcl_GetStringFromObj(attributePtr, &length);
+
+	native = Tcl_UtfToExternalDString(NULL, string, length, &ds);
+	pwPtr = TclpGetPwNam(native);			/* INTL: Native. */
+	Tcl_DStringFree(&ds);
+
+	if (pwPtr == NULL) {
+	    if (interp != NULL) {
+		Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+			"could not set owner for file \"%s\":"
+			" user \"%s\" does not exist",
+			TclGetString(fileName), string));
+		Tcl_SetErrorCode(interp, "TCL", "OPERATION", "SETOWN",
+			"NO_USER", NULL);
+	    }
+	    return TCL_ERROR;
+	}
+	uid = pwPtr->pw_uid;
+    }
+
+    native = Tcl_FSGetNativePath(fileName);
+    result = chown(native, (uid_t) uid, (gid_t) -1);	/* INTL: Native. */
+
+    if (result != 0) {
+	if (interp != NULL) {
+	    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+		    "could not set owner for file \"%s\": %s",
+		    TclGetString(fileName), Tcl_PosixError(interp)));
+	}
+	return TCL_ERROR;
+    }
+    return TCL_OK;
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * SetPermissionsAttribute
+ *
+ *	Sets the file to the given permission.
+ *
+ * Results:
+ *	Standard TCL result.
+ *
+ * Side effects:
+ *	The permission of the file is changed.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+static int
+SetPermissionsAttribute(
+    Tcl_Interp *interp,		/* The interp we are using for errors. */
+    int objIndex,		/* The index of the attribute. */
+    Tcl_Obj *fileName,		/* The name of the file (UTF-8). */
+    Tcl_Obj *attributePtr)	/* The attribute to set. */
+{
+    long mode;
+    mode_t newMode;
+    int result = TCL_ERROR;
+    const char *native;
+    const char *modeStringPtr = TclGetString(attributePtr);
+    int scanned = TclParseAllWhiteSpace(modeStringPtr, -1);
+
+    /*
+     * First supply support for octal number format
+     */
+
+    if ((modeStringPtr[scanned] == '0')
+	    && (modeStringPtr[scanned+1] >= '0')
+	    && (modeStringPtr[scanned+1] <= '7')) {
+	/* Leading zero - attempt octal interpretation */
+	Tcl_Obj *modeObj;
+
+	TclNewLiteralStringObj(modeObj, "0o");
+	Tcl_AppendToObj(modeObj, modeStringPtr+scanned+1, -1);
+	result = Tcl_GetLongFromObj(NULL, modeObj, &mode);
+	Tcl_DecrRefCount(modeObj);
+    }
+    if (result == TCL_OK
+	    || Tcl_GetLongFromObj(NULL, attributePtr, &mode) == TCL_OK) {
+	newMode = (mode_t) (mode & 0x00007FFF);
+    } else {
+	Tcl_StatBuf buf;
+
+	/*
+	 * Try the forms "rwxrwxrwx" and "ugo=rwx"
+	 *
+	 * We get the current mode of the file, in order to allow for ug+-=rwx
+	 * style chmod strings.
+	 */
+
+	result = TclpObjStat(fileName, &buf);
+	if (result != 0) {
+	    if (interp != NULL) {
+		Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+			"could not read \"%s\": %s",
+			TclGetString(fileName), Tcl_PosixError(interp)));
+	    }
+	    return TCL_ERROR;
+	}
+	newMode = (mode_t) (buf.st_mode & 0x00007FFF);
+
+	if (GetModeFromPermString(NULL, modeStringPtr, &newMode) != TCL_OK) {
+	    if (interp != NULL) {
+		Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+			"unknown permission string format \"%s\"",
+			modeStringPtr));
+		Tcl_SetErrorCode(interp, "TCL", "VALUE", "PERMISSION", NULL);
+	    }
+	    return TCL_ERROR;
+	}
+    }
+
+    native = Tcl_FSGetNativePath(fileName);
+    result = chmod(native, newMode);		/* INTL: Native. */
+    if (result != 0) {
+	if (interp != NULL) {
+	    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+		    "could not set permissions for file \"%s\": %s",
+		    TclGetString(fileName), Tcl_PosixError(interp)));
+	}
+	return TCL_ERROR;
+    }
+    return TCL_OK;
+}
+
+#ifndef DJGPP
+/*
+ *---------------------------------------------------------------------------
+ *
+ * TclpObjListVolumes --
+ *
+ *	Lists the currently mounted volumes, which on UNIX is just /.
+ *
+ * Results:
+ *	The list of volumes.
+ *
+ * Side effects:
+ *	None.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+Tcl_Obj *
+TclpObjListVolumes(void)
+{
+    Tcl_Obj *resultPtr;
+    TclNewLiteralStringObj(resultPtr, "/");
+
+    Tcl_IncrRefCount(resultPtr);
+    return resultPtr;
+}
+#endif
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * GetModeFromPermString --
+ *
+ *	This procedure is invoked to process the "file permissions" Tcl
+ *	command, to check for a "rwxrwxrwx" or "ugoa+-=rwxst" string. See the
+ *	user documentation for details on what it does.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	See the user documentation.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+GetModeFromPermString(
+    Tcl_Interp *interp,		/* The interp we are using for errors. */
+    const char *modeStringPtr, /* Permissions string */
+    mode_t *modePtr)		/* pointer to the mode value */
+{
+    mode_t newMode;
+    mode_t oldMode;		/* Storage for the value of the old mode (that
+				 * is passed in), to allow for the chmod style
+				 * manipulation. */
+    int i,n, who, op, what, op_found, who_found;
+
+    /*
+     * We start off checking for an "rwxrwxrwx" style permissions string
+     */
+
+    if (strlen(modeStringPtr) != 9) {
+	goto chmodStyleCheck;
+    }
+
+    newMode = 0;
+    for (i = 0; i < 9; i++) {
+	switch (*(modeStringPtr+i)) {
+	case 'r':
+	    if ((i%3) != 0) {
+		goto chmodStyleCheck;
+	    }
+	    newMode |= (1<<(8-i));
+	    break;
+	case 'w':
+	    if ((i%3) != 1) {
+		goto chmodStyleCheck;
+	    }
+	    newMode |= (1<<(8-i));
+	    break;
+	case 'x':
+	    if ((i%3) != 2) {
+		goto chmodStyleCheck;
+	    }
+	    newMode |= (1<<(8-i));
+	    break;
+	case 's':
+	    if (((i%3) != 2) || (i > 5)) {
+		goto chmodStyleCheck;
+	    }
+	    newMode |= (1<<(8-i));
+	    newMode |= (1<<(11-(i/3)));
+	    break;
+	case 'S':
+	    if (((i%3) != 2) || (i > 5)) {
+		goto chmodStyleCheck;
+	    }
+	    newMode |= (1<<(11-(i/3)));
+	    break;
+	case 't':
+	    if (i != 8) {
+		goto chmodStyleCheck;
+	    }
+	    newMode |= (1<<(8-i));
+	    newMode |= (1<<9);
+	    break;
+	case 'T':
+	    if (i != 8) {
+		goto chmodStyleCheck;
+	    }
+	    newMode |= (1<<9);
+	    break;
+	case '-':
+	    break;
+	default:
+	    /*
+	     * Oops, not what we thought it was, so go on
+	     */
+	    goto chmodStyleCheck;
+	}
+    }
+    *modePtr = newMode;
+    return TCL_OK;
+
+  chmodStyleCheck:
+    /*
+     * We now check for an "ugoa+-=rwxst" style permissions string
+     */
+
+    for (n = 0 ; *(modeStringPtr+n) != '\0' ; n = n + i) {
+	oldMode = *modePtr;
+	who = op = what = op_found = who_found = 0;
+	for (i = 0 ; *(modeStringPtr+n+i) != '\0' ; i++ ) {
+	    if (!who_found) {
+		/* who */
+		switch (*(modeStringPtr+n+i)) {
+		case 'u':
+		    who |= 0x9c0;
+		    continue;
+		case 'g':
+		    who |= 0x438;
+		    continue;
+		case 'o':
+		    who |= 0x207;
+		    continue;
+		case 'a':
+		    who |= 0xfff;
+		    continue;
+		}
+	    }
+	    who_found = 1;
+	    if (who == 0) {
+		who = 0xfff;
+	    }
+	    if (!op_found) {
+		/* op */
+		switch (*(modeStringPtr+n+i)) {
+		case '+':
+		    op = 1;
+		    op_found = 1;
+		    continue;
+		case '-':
+		    op = 2;
+		    op_found = 1;
+		    continue;
+		case '=':
+		    op = 3;
+		    op_found = 1;
+		    continue;
+		default:
+		    return TCL_ERROR;
+		}
+	    }
+	    /* what */
+	    switch (*(modeStringPtr+n+i)) {
+	    case 'r':
+		what |= 0x124;
+		continue;
+	    case 'w':
+		what |= 0x92;
+		continue;
+	    case 'x':
+		what |= 0x49;
+		continue;
+	    case 's':
+		what |= 0xc00;
+		continue;
+	    case 't':
+		what |= 0x200;
+		continue;
+	    case ',':
+		break;
+	    default:
+		return TCL_ERROR;
+	    }
+	    if (*(modeStringPtr+n+i) == ',') {
+		i++;
+		break;
+	    }
+	}
+	switch (op) {
+	case 1:
+	    *modePtr = oldMode | (who & what);
+	    continue;
+	case 2:
+	    *modePtr = oldMode & ~(who & what);
+	    continue;
+	case 3:
+	    *modePtr = (oldMode & ~who) | (who & what);
+	    continue;
+	}
+    }
+    return TCL_OK;
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * TclpObjNormalizePath --
+ *
+ *	This function scans through a path specification and replaces it, in
+ *	place, with a normalized version. A normalized version is one in which
+ *	all symlinks in the path are replaced with their expanded form (except
+ *	a symlink at the very end of the path).
+ *
+ * Results:
+ *	The new 'nextCheckpoint' value, giving as far as we could understand
+ *	in the path.
+ *
+ * Side effects:
+ *	The pathPtr string, is modified.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+int
+TclpObjNormalizePath(
+    Tcl_Interp *interp,
+    Tcl_Obj *pathPtr,
+    int nextCheckpoint)
+{
+    const char *currentPathEndPosition;
+    int pathLen;
+    char cur;
+    const char *path = Tcl_GetStringFromObj(pathPtr, &pathLen);
+    Tcl_DString ds;
+    const char *nativePath;
+#ifndef NO_REALPATH
+    char normPath[MAXPATHLEN];
+#endif
+
+    /*
+     * We add '1' here because if nextCheckpoint is zero we know that '/'
+     * exists, and if it isn't zero, it must point at a directory separator
+     * which we also know exists.
+     */
+
+    currentPathEndPosition = path + nextCheckpoint;
+    if (*currentPathEndPosition == '/') {
+	currentPathEndPosition++;
+    }
+
+#ifndef NO_REALPATH
+    /*
+     * For speed, try to get the entire path in one go.
+     */
+
+    if (nextCheckpoint == 0 && haveRealpath) {
+	char *lastDir = strrchr(currentPathEndPosition, '/');
+
+	if (lastDir != NULL) {
+	    nativePath = Tcl_UtfToExternalDString(NULL, path,
+		    lastDir-path, &ds);
+	    if (Realpath(nativePath, normPath) != NULL) {
+		if (*nativePath != '/' && *normPath == '/') {
+		    /*
+		     * realpath has transformed a relative path into an
+		     * absolute path, we do not know how to handle this.
+		     */
+		} else {
+		    nextCheckpoint = lastDir - path;
+		    goto wholeStringOk;
+		}
+	    }
+	    Tcl_DStringFree(&ds);
+	}
+    }
+
+    /*
+     * Else do it the slow way.
+     */
+#endif
+
+    while (1) {
+	cur = *currentPathEndPosition;
+	if ((cur == '/') && (path != currentPathEndPosition)) {
+	    /*
+	     * Reached directory separator.
+	     */
+
+	    int accessOk;
+
+	    nativePath = Tcl_UtfToExternalDString(NULL, path,
+		    currentPathEndPosition - path, &ds);
+	    accessOk = access(nativePath, F_OK);
+	    Tcl_DStringFree(&ds);
+
+	    if (accessOk != 0) {
+		/*
+		 * File doesn't exist.
+		 */
+
+		break;
+	    }
+
+	    /*
+	     * Update the acceptable point.
+	     */
+
+	    nextCheckpoint = currentPathEndPosition - path;
+	} else if (cur == 0) {
+	    /*
+	     * Reached end of string.
+	     */
+
+	    break;
+	}
+	currentPathEndPosition++;
+    }
+
+    /*
+     * We should really now convert this to a canonical path. We do that with
+     * 'realpath' if we have it available. Otherwise we could step through
+     * every single path component, checking whether it is a symlink, but that
+     * would be a lot of work, and most modern OSes have 'realpath'.
+     */
+
+#ifndef NO_REALPATH
+    if (haveRealpath) {
+	/*
+	 * If we only had '/foo' or '/' then we never increment nextCheckpoint
+	 * and we don't need or want to go through 'Realpath'. Also, on some
+	 * platforms, passing an empty string to 'Realpath' will give us the
+	 * normalized pwd, which is not what we want at all!
+	 */
+
+	if (nextCheckpoint == 0) {
+	    return 0;
+	}
+
+	nativePath = Tcl_UtfToExternalDString(NULL, path,nextCheckpoint, &ds);
+	if (Realpath(nativePath, normPath) != NULL) {
+	    int newNormLen;
+
+	wholeStringOk:
+	    newNormLen = strlen(normPath);
+	    if ((newNormLen == Tcl_DStringLength(&ds))
+		    && (strcmp(normPath, nativePath) == 0)) {
+		/*
+		 * String is unchanged.
+		 */
+
+		Tcl_DStringFree(&ds);
+
+		/*
+		 * Enable this to have the native FS claim normalization of
+		 * the whole path for existing files. That would permit the
+		 * caller to declare normalization complete without calls to
+		 * additional filesystems. Saving lots of calls is probably
+		 * worth the extra access() time here. When no other FS's are
+		 * registered though, things are less clear.
+		 *
+		if (0 == access(normPath, F_OK)) {
+		    return pathLen;
+		}
+		 */
+
+		return nextCheckpoint;
+	    }
+
+	    /*
+	     * Free up the native path and put in its place the converted,
+	     * normalized path.
+	     */
+
+	    Tcl_DStringFree(&ds);
+	    Tcl_ExternalToUtfDString(NULL, normPath, (int) newNormLen, &ds);
+
+	    if (path[nextCheckpoint] != '\0') {
+		/*
+		 * Not at end, append remaining path.
+		 */
+
+		int normLen = Tcl_DStringLength(&ds);
+
+		Tcl_DStringAppend(&ds, path + nextCheckpoint,
+			pathLen - nextCheckpoint);
+
+		/*
+		 * We recognise up to and including the directory separator.
+		 */
+
+		nextCheckpoint = normLen + 1;
+	    } else {
+		/*
+		 * We recognise the whole string.
+		 */
+
+		nextCheckpoint = Tcl_DStringLength(&ds);
+	    }
+
+	    /*
+	     * Overwrite with the normalized path.
+	     */
+
+	    Tcl_SetStringObj(pathPtr, Tcl_DStringValue(&ds),
+		    Tcl_DStringLength(&ds));
+	}
+	Tcl_DStringFree(&ds);
+    }
+#endif	/* !NO_REALPATH */
+
+    return nextCheckpoint;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclpOpenTemporaryFile, TclUnixOpenTemporaryFile --
+ *
+ *	Creates a temporary file, possibly based on the supplied bits and
+ *	pieces of template supplied in the first three arguments. If the
+ *	fourth argument is non-NULL, it contains a Tcl_Obj to store the name
+ *	of the temporary file in (and it is caller's responsibility to clean
+ *	up). If the fourth argument is NULL, try to arrange for the temporary
+ *	file to go away once it is no longer needed.
+ *
+ * Results:
+ *	A read-write Tcl Channel open on the file for TclpOpenTemporaryFile,
+ *	or a file descriptor (or -1 on failure) for TclUnixOpenTemporaryFile.
+ *
+ * Side effects:
+ *	Accesses the filesystem. Will set the contents of the Tcl_Obj fourth
+ *	argument (if that is non-NULL).
+ *
+ *----------------------------------------------------------------------
+ */
+
+Tcl_Channel
+TclpOpenTemporaryFile(
+    Tcl_Obj *dirObj,
+    Tcl_Obj *basenameObj,
+    Tcl_Obj *extensionObj,
+    Tcl_Obj *resultingNameObj)
+{
+    int fd = TclUnixOpenTemporaryFile(dirObj, basenameObj, extensionObj,
+	    resultingNameObj);
+
+    if (fd == -1) {
+	return NULL;
+    }
+    return Tcl_MakeFileChannel(INT2PTR(fd), TCL_READABLE|TCL_WRITABLE);
+}
+
+int
+TclUnixOpenTemporaryFile(
+    Tcl_Obj *dirObj,
+    Tcl_Obj *basenameObj,
+    Tcl_Obj *extensionObj,
+    Tcl_Obj *resultingNameObj)
+{
+    Tcl_DString template, tmp;
+    const char *string;
+    int len, fd;
+
+    /*
+     * We should also check against making more then TMP_MAX of these.
+     */
+
+    if (dirObj) {
+	string = Tcl_GetStringFromObj(dirObj, &len);
+	Tcl_UtfToExternalDString(NULL, string, len, &template);
+    } else {
+	Tcl_DStringInit(&template);
+	Tcl_DStringAppend(&template, DefaultTempDir(), -1); /* INTL: native */
+    }
+
+    TclDStringAppendLiteral(&template, "/");
+
+    if (basenameObj) {
+	string = Tcl_GetStringFromObj(basenameObj, &len);
+	Tcl_UtfToExternalDString(NULL, string, len, &tmp);
+	TclDStringAppendDString(&template, &tmp);
+	Tcl_DStringFree(&tmp);
+    } else {
+	TclDStringAppendLiteral(&template, "tcl");
+    }
+
+    TclDStringAppendLiteral(&template, "_XXXXXX");
+
+#ifdef HAVE_MKSTEMPS
+    if (extensionObj) {
+	string = Tcl_GetStringFromObj(extensionObj, &len);
+	Tcl_UtfToExternalDString(NULL, string, len, &tmp);
+	TclDStringAppendDString(&template, &tmp);
+	fd = mkstemps(Tcl_DStringValue(&template), Tcl_DStringLength(&tmp));
+	Tcl_DStringFree(&tmp);
+    } else
+#endif
+    {
+	fd = mkstemp(Tcl_DStringValue(&template));
+    }
+
+    if (fd == -1) {
+	Tcl_DStringFree(&template);
+	return -1;
+    }
+
+    if (resultingNameObj) {
+	Tcl_ExternalToUtfDString(NULL, Tcl_DStringValue(&template),
+		Tcl_DStringLength(&template), &tmp);
+	Tcl_SetStringObj(resultingNameObj, Tcl_DStringValue(&tmp),
+		Tcl_DStringLength(&tmp));
+	Tcl_DStringFree(&tmp);
+    } else {
+	/*
+	 * Try to delete the file immediately since we're not reporting the
+	 * name to anyone. Note that we're *not* handling any errors from
+	 * this!
+	 */
+
+	unlink(Tcl_DStringValue(&template));
+	errno = 0;
+    }
+    Tcl_DStringFree(&template);
+
+    return fd;
+}
+
+/*
+ * Helper that does *part* of what tempnam() does.
+ */
+
+static const char *
+DefaultTempDir(void)
+{
+    const char *dir;
+    struct stat buf;
+
+    dir = getenv("TMPDIR");
+    if (dir && dir[0] && stat(dir, &buf) == 0 && S_ISDIR(buf.st_mode)
+	    && access(dir, W_OK) == 0) {
+	return dir;
+    }
+
+#ifdef P_tmpdir
+    dir = P_tmpdir;
+    if (stat(dir, &buf)==0 && S_ISDIR(buf.st_mode) && access(dir, W_OK)==0) {
+	return dir;
+    }
+#endif
+
+    /*
+     * Assume that the default location ("/tmp" if not overridden) is always
+     * an existing writable directory; we've no recovery mechanism if it
+     * isn't.
+     */
+
+    return TCL_TEMPORARY_FILE_DIRECTORY;
+}
+
+#if defined(__CYGWIN__)
+
+static void
+StatError(
+    Tcl_Interp *interp,		/* The interp that has the error */
+    Tcl_Obj *fileName)		/* The name of the file which caused the
+				 * error. */
+{
+    TclWinConvertError(GetLastError());
+    Tcl_SetObjResult(interp, Tcl_ObjPrintf("could not read \"%s\": %s",
+	    TclGetString(fileName), Tcl_PosixError(interp)));
+}
+
+static WCHAR *
+winPathFromObj(
+    Tcl_Obj *fileName)
+{
+    int size;
+    const char *native =  Tcl_FSGetNativePath(fileName);
+    WCHAR *winPath;
+
+    size = cygwin_conv_path(1, native, NULL, 0);
+    winPath = ckalloc(size);
+    cygwin_conv_path(1, native, winPath, size);
+
+    return winPath;
+}
+
+static const int attributeArray[] = {
+    0x20, 0, 2, 0, 0, 1, 4};
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * GetUnixFileAttributes
+ *
+ *	Gets the readonly attribute of a file.
+ *
+ * Results:
+ *	Standard TCL result. Returns a new Tcl_Obj in attributePtrPtr if there
+ *	is no error. The object will have ref count 0.
+ *
+ * Side effects:
+ *	A new object is allocated.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+GetUnixFileAttributes(
+    Tcl_Interp *interp,		/* The interp we are using for errors. */
+    int objIndex,		/* The index of the attribute. */
+    Tcl_Obj *fileName,		/* The name of the file (UTF-8). */
+    Tcl_Obj **attributePtrPtr)	/* A pointer to return the object with. */
+{
+    int fileAttributes;
+    WCHAR *winPath = winPathFromObj(fileName);
+
+    fileAttributes = GetFileAttributesW(winPath);
+    ckfree(winPath);
+
+    if (fileAttributes == -1) {
+	StatError(interp, fileName);
+	return TCL_ERROR;
+    }
+
+    *attributePtrPtr = Tcl_NewIntObj((fileAttributes&attributeArray[objIndex])!=0);
+
+    return TCL_OK;
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * SetUnixFileAttributes
+ *
+ *	Sets the readonly attribute of a file.
+ *
+ * Results:
+ *	Standard TCL result.
+ *
+ * Side effects:
+ *	The readonly attribute of the file is changed.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+static int
+SetUnixFileAttributes(
+    Tcl_Interp *interp,	    /* The interp we are using for errors. */
+    int objIndex,           /* The index of the attribute. */
+    Tcl_Obj *fileName,      /* The name of the file (UTF-8). */
+    Tcl_Obj *attributePtr)  /* The attribute to set. */
+{
+    int yesNo, fileAttributes, old;
+    WCHAR *winPath;
+
+    if (Tcl_GetBooleanFromObj(interp, attributePtr, &yesNo) != TCL_OK) {
+	return TCL_ERROR;
+    }
+
+    winPath = winPathFromObj(fileName);
+
+    fileAttributes = old = GetFileAttributesW(winPath);
+
+    if (fileAttributes == -1) {
+	ckfree(winPath);
+	StatError(interp, fileName);
+	return TCL_ERROR;
+    }
+
+    if (yesNo) {
+	fileAttributes |= attributeArray[objIndex];
+    } else {
+	fileAttributes &= ~attributeArray[objIndex];
+    }
+
+    if ((fileAttributes != old)
+	    && !SetFileAttributesW(winPath, fileAttributes)) {
+	ckfree(winPath);
+	StatError(interp, fileName);
+	return TCL_ERROR;
+    }
+
+	ckfree(winPath);
+    return TCL_OK;
+}
+#elif defined(HAVE_CHFLAGS) && defined(UF_IMMUTABLE)
+/*
+ *----------------------------------------------------------------------
+ *
+ * GetUnixFileAttributes
+ *
+ *	Gets the readonly attribute (user immutable flag) of a file.
+ *
+ * Results:
+ *	Standard TCL result. Returns a new Tcl_Obj in attributePtrPtr if there
+ *	is no error. The object will have ref count 0.
+ *
+ * Side effects:
+ *	A new object is allocated.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+GetUnixFileAttributes(
+    Tcl_Interp *interp,		/* The interp we are using for errors. */
+    int objIndex,		/* The index of the attribute. */
+    Tcl_Obj *fileName,		/* The name of the file (UTF-8). */
+    Tcl_Obj **attributePtrPtr)	/* A pointer to return the object with. */
+{
+    Tcl_StatBuf statBuf;
+    int result;
+
+    result = TclpObjStat(fileName, &statBuf);
+
+    if (result != 0) {
+	if (interp != NULL) {
+	    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+		    "could not read \"%s\": %s",
+		    TclGetString(fileName), Tcl_PosixError(interp)));
+	}
+	return TCL_ERROR;
+    }
+
+    *attributePtrPtr = Tcl_NewBooleanObj(statBuf.st_flags&UF_IMMUTABLE);
+
+    return TCL_OK;
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * SetUnixFileAttributes
+ *
+ *	Sets the readonly attribute (user immutable flag) of a file.
+ *
+ * Results:
+ *	Standard TCL result.
+ *
+ * Side effects:
+ *	The readonly attribute of the file is changed.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+static int
+SetUnixFileAttributes(
+    Tcl_Interp *interp,		/* The interp we are using for errors. */
+    int objIndex,		/* The index of the attribute. */
+    Tcl_Obj *fileName,		/* The name of the file (UTF-8). */
+    Tcl_Obj *attributePtr)	/* The attribute to set. */
+{
+    Tcl_StatBuf statBuf;
+    int result, readonly;
+    const char *native;
+
+    if (Tcl_GetBooleanFromObj(interp, attributePtr, &readonly) != TCL_OK) {
+	return TCL_ERROR;
+    }
+
+    result = TclpObjStat(fileName, &statBuf);
+
+    if (result != 0) {
+	if (interp != NULL) {
+	    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+		    "could not read \"%s\": %s",
+		    TclGetString(fileName), Tcl_PosixError(interp)));
+	}
+	return TCL_ERROR;
+    }
+
+    if (readonly) {
+	statBuf.st_flags |= UF_IMMUTABLE;
+    } else {
+	statBuf.st_flags &= ~UF_IMMUTABLE;
+    }
+
+    native = Tcl_FSGetNativePath(fileName);
+    result = chflags(native, statBuf.st_flags);		/* INTL: Native. */
+    if (result != 0) {
+	if (interp != NULL) {
+	    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+		    "could not set flags for file \"%s\": %s",
+		    TclGetString(fileName), Tcl_PosixError(interp)));
+	}
+	return TCL_ERROR;
+    }
+    return TCL_OK;
+}
+#endif /* defined(HAVE_CHFLAGS) && defined(UF_IMMUTABLE) */
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/tcl8.6/unix/tclUnixFile.c b/tcl8.6/unix/tclUnixFile.c
new file mode 100644
index 0000000..5684b16
--- /dev/null
+++ b/tcl8.6/unix/tclUnixFile.c
@@ -0,0 +1,1243 @@
+/*
+ * tclUnixFile.c --
+ *
+ *	This file contains wrappers around UNIX file handling functions.
+ *	These wrappers mask differences between Windows and UNIX.
+ *
+ * Copyright (c) 1995-1998 Sun Microsystems, Inc.
+ *
+ * See the file "license.terms" for information on usage and redistribution
+ * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ */
+
+#include "tclInt.h"
+#include "tclFileSystem.h"
+
+static int NativeMatchType(Tcl_Interp *interp, const char* nativeEntry,
+	const char* nativeName, Tcl_GlobTypeData *types);
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * TclpFindExecutable --
+ *
+ *	This function computes the absolute path name of the current
+ *	application, given its argv[0] value. For Cygwin, argv[0] is
+ *	ignored and the path is determined the same as under win32.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	The computed path name is stored as a ProcessGlobalValue.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+void
+TclpFindExecutable(
+    const char *argv0)		/* The value of the application's argv[0]
+				 * (native). */
+{
+    Tcl_Encoding encoding;
+#ifdef __CYGWIN__
+    int length;
+    char buf[PATH_MAX * 2];
+    char name[PATH_MAX * TCL_UTF_MAX + 1];
+    GetModuleFileNameW(NULL, buf, PATH_MAX);
+    cygwin_conv_path(3, buf, name, PATH_MAX);
+    length = strlen(name);
+    if ((length > 4) && !strcasecmp(name + length - 4, ".exe")) {
+	/* Strip '.exe' part. */
+	length -= 4;
+    }
+    encoding = Tcl_GetEncoding(NULL, NULL);
+    TclSetObjNameOfExecutable(
+	    Tcl_NewStringObj(name, length), encoding);
+#else
+    const char *name, *p;
+    Tcl_StatBuf statBuf;
+    Tcl_DString buffer, nameString, cwd, utfName;
+
+    if (argv0 == NULL) {
+	return;
+    }
+    Tcl_DStringInit(&buffer);
+
+    name = argv0;
+    for (p = name; *p != '\0'; p++) {
+	if (*p == '/') {
+	    /*
+	     * The name contains a slash, so use the name directly without
+	     * doing a path search.
+	     */
+
+	    goto gotName;
+	}
+    }
+
+    p = getenv("PATH");					/* INTL: Native. */
+    if (p == NULL) {
+	/*
+	 * There's no PATH environment variable; use the default that is used
+	 * by sh.
+	 */
+
+	p = ":/bin:/usr/bin";
+    } else if (*p == '\0') {
+	/*
+	 * An empty path is equivalent to ".".
+	 */
+
+	p = "./";
+    }
+
+    /*
+     * Search through all the directories named in the PATH variable to see if
+     * argv[0] is in one of them. If so, use that file name.
+     */
+
+    while (1) {
+	while (TclIsSpaceProc(*p)) {
+	    p++;
+	}
+	name = p;
+	while ((*p != ':') && (*p != 0)) {
+	    p++;
+	}
+	TclDStringClear(&buffer);
+	if (p != name) {
+	    Tcl_DStringAppend(&buffer, name, p - name);
+	    if (p[-1] != '/') {
+		TclDStringAppendLiteral(&buffer, "/");
+	    }
+	}
+	name = Tcl_DStringAppend(&buffer, argv0, -1);
+
+	/*
+	 * INTL: The following calls to access() and stat() should not be
+	 * converted to Tclp routines because they need to operate on native
+	 * strings directly.
+	 */
+
+	if ((access(name, X_OK) == 0)			/* INTL: Native. */
+		&& (TclOSstat(name, &statBuf) == 0)	/* INTL: Native. */
+		&& S_ISREG(statBuf.st_mode)) {
+	    goto gotName;
+	}
+	if (*p == '\0') {
+	    break;
+	} else if (*(p+1) == 0) {
+	    p = "./";
+	} else {
+	    p++;
+	}
+    }
+    TclSetObjNameOfExecutable(Tcl_NewObj(), NULL);
+    goto done;
+
+    /*
+     * If the name starts with "/" then just store it
+     */
+
+  gotName:
+#ifdef DJGPP
+    if (name[1] == ':')
+#else
+    if (name[0] == '/')
+#endif
+    {
+	encoding = Tcl_GetEncoding(NULL, NULL);
+	Tcl_ExternalToUtfDString(encoding, name, -1, &utfName);
+	TclSetObjNameOfExecutable(
+		Tcl_NewStringObj(Tcl_DStringValue(&utfName), -1), encoding);
+	Tcl_DStringFree(&utfName);
+	goto done;
+    }
+
+    if (TclpGetCwd(NULL, &cwd) == NULL) {
+	TclSetObjNameOfExecutable(Tcl_NewObj(), NULL);
+	goto done;
+    }
+
+    /*
+     * The name is relative to the current working directory. First strip off
+     * a leading "./", if any, then add the full path name of the current
+     * working directory.
+     */
+
+    if ((name[0] == '.') && (name[1] == '/')) {
+	name += 2;
+    }
+
+    Tcl_DStringInit(&nameString);
+    Tcl_DStringAppend(&nameString, name, -1);
+
+    Tcl_DStringFree(&buffer);
+    Tcl_UtfToExternalDString(NULL, Tcl_DStringValue(&cwd),
+	    Tcl_DStringLength(&cwd), &buffer);
+    if (Tcl_DStringValue(&cwd)[Tcl_DStringLength(&cwd) -1] != '/') {
+	TclDStringAppendLiteral(&buffer, "/");
+    }
+    Tcl_DStringFree(&cwd);
+    TclDStringAppendDString(&buffer, &nameString);
+    Tcl_DStringFree(&nameString);
+
+    encoding = Tcl_GetEncoding(NULL, NULL);
+    Tcl_ExternalToUtfDString(encoding, Tcl_DStringValue(&buffer), -1,
+	    &utfName);
+    TclSetObjNameOfExecutable(
+	    Tcl_NewStringObj(Tcl_DStringValue(&utfName), -1), encoding);
+    Tcl_DStringFree(&utfName);
+
+  done:
+    Tcl_DStringFree(&buffer);
+#endif
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclpMatchInDirectory --
+ *
+ *	This routine is used by the globbing code to search a directory for
+ *	all files which match a given pattern.
+ *
+ * Results:
+ *	The return value is a standard Tcl result indicating whether an error
+ *	occurred in globbing. Errors are left in interp, good results are
+ *	[lappend]ed to resultPtr (which must be a valid object).
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclpMatchInDirectory(
+    Tcl_Interp *interp,		/* Interpreter to receive errors. */
+    Tcl_Obj *resultPtr,		/* List object to lappend results. */
+    Tcl_Obj *pathPtr,		/* Contains path to directory to search. */
+    const char *pattern,	/* Pattern to match against. */
+    Tcl_GlobTypeData *types)	/* Object containing list of acceptable types.
+				 * May be NULL. In particular the directory
+				 * flag is very important. */
+{
+    const char *native;
+    Tcl_Obj *fileNamePtr;
+    int matchResult = 0;
+
+    if (types != NULL && types->type == TCL_GLOB_TYPE_MOUNT) {
+	/*
+	 * The native filesystem never adds mounts.
+	 */
+
+	return TCL_OK;
+    }
+
+    fileNamePtr = Tcl_FSGetTranslatedPath(interp, pathPtr);
+    if (fileNamePtr == NULL) {
+	return TCL_ERROR;
+    }
+
+    if (pattern == NULL || (*pattern == '\0')) {
+	/*
+	 * Match a file directly.
+	 */
+
+	Tcl_Obj *tailPtr;
+	const char *nativeTail;
+
+	native = Tcl_FSGetNativePath(pathPtr);
+	tailPtr = TclPathPart(interp, pathPtr, TCL_PATH_TAIL);
+	nativeTail = Tcl_FSGetNativePath(tailPtr);
+	matchResult = NativeMatchType(interp, native, nativeTail, types);
+	if (matchResult == 1) {
+	    Tcl_ListObjAppendElement(interp, resultPtr, pathPtr);
+	}
+	Tcl_DecrRefCount(tailPtr);
+	Tcl_DecrRefCount(fileNamePtr);
+    } else {
+	TclDIR *d;
+	Tcl_DirEntry *entryPtr;
+	const char *dirName;
+	int dirLength, nativeDirLen;
+	int matchHidden, matchHiddenPat;
+	Tcl_StatBuf statBuf;
+	Tcl_DString ds;		/* native encoding of dir */
+	Tcl_DString dsOrig;	/* utf-8 encoding of dir */
+
+	Tcl_DStringInit(&dsOrig);
+	dirName = Tcl_GetStringFromObj(fileNamePtr, &dirLength);
+	Tcl_DStringAppend(&dsOrig, dirName, dirLength);
+
+	/*
+	 * Make sure that the directory part of the name really is a
+	 * directory. If the directory name is "", use the name "." instead,
+	 * because some UNIX systems don't treat "" like "." automatically.
+	 * Keep the "" for use in generating file names, otherwise "glob
+	 * foo.c" would return "./foo.c".
+	 */
+
+	if (dirLength == 0) {
+	    dirName = ".";
+	} else {
+	    dirName = Tcl_DStringValue(&dsOrig);
+
+	    /*
+	     * Make sure we have a trailing directory delimiter.
+	     */
+
+	    if (dirName[dirLength-1] != '/') {
+		dirName = TclDStringAppendLiteral(&dsOrig, "/");
+		dirLength++;
+	    }
+	}
+
+	/*
+	 * Now open the directory for reading and iterate over the contents.
+	 */
+
+	native = Tcl_UtfToExternalDString(NULL, dirName, -1, &ds);
+
+	if ((TclOSstat(native, &statBuf) != 0)		/* INTL: Native. */
+		|| !S_ISDIR(statBuf.st_mode)) {
+	    Tcl_DStringFree(&dsOrig);
+	    Tcl_DStringFree(&ds);
+	    Tcl_DecrRefCount(fileNamePtr);
+	    return TCL_OK;
+	}
+
+	d = TclOSopendir(native);				/* INTL: Native. */
+	if (d == NULL) {
+	    Tcl_DStringFree(&ds);
+	    if (interp != NULL) {
+		Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+			"couldn't read directory \"%s\": %s",
+			Tcl_DStringValue(&dsOrig), Tcl_PosixError(interp)));
+	    }
+	    Tcl_DStringFree(&dsOrig);
+	    Tcl_DecrRefCount(fileNamePtr);
+	    return TCL_ERROR;
+	}
+
+	nativeDirLen = Tcl_DStringLength(&ds);
+
+	/*
+	 * Check to see if -type or the pattern requests hidden files.
+	 */
+
+	matchHiddenPat = (pattern[0] == '.')
+		|| ((pattern[0] == '\\') && (pattern[1] == '.'));
+	matchHidden = matchHiddenPat
+		|| (types && (types->perm & TCL_GLOB_PERM_HIDDEN));
+	while ((entryPtr = TclOSreaddir(d)) != NULL) {	/* INTL: Native. */
+	    Tcl_DString utfDs;
+	    const char *utfname;
+
+	    /*
+	     * Skip this file if it doesn't agree with the hidden parameters
+	     * requested by the user (via -type or pattern).
+	     */
+
+	    if (*entryPtr->d_name == '.') {
+		if (!matchHidden) {
+		    continue;
+		}
+	    } else {
+#ifdef MAC_OSX_TCL
+		if (matchHiddenPat) {
+		    continue;
+		}
+		/* Also need to check HFS hidden flag in TclMacOSXMatchType. */
+#else
+		if (matchHidden) {
+		    continue;
+		}
+#endif
+	    }
+
+	    /*
+	     * Now check to see if the file matches, according to both type
+	     * and pattern. If so, add the file to the result.
+	     */
+
+	    utfname = Tcl_ExternalToUtfDString(NULL, entryPtr->d_name, -1,
+		    &utfDs);
+	    if (Tcl_StringCaseMatch(utfname, pattern, 0)) {
+		int typeOk = 1;
+
+		if (types != NULL) {
+		    Tcl_DStringSetLength(&ds, nativeDirLen);
+		    native = Tcl_DStringAppend(&ds, entryPtr->d_name, -1);
+		    matchResult = NativeMatchType(interp, native,
+			    entryPtr->d_name, types);
+		    typeOk = (matchResult == 1);
+		}
+		if (typeOk) {
+		    Tcl_ListObjAppendElement(interp, resultPtr,
+			    TclNewFSPathObj(pathPtr, utfname,
+			    Tcl_DStringLength(&utfDs)));
+		}
+	    }
+	    Tcl_DStringFree(&utfDs);
+	    if (matchResult < 0) {
+		break;
+	    }
+	}
+
+	TclOSclosedir(d);
+	Tcl_DStringFree(&ds);
+	Tcl_DStringFree(&dsOrig);
+	Tcl_DecrRefCount(fileNamePtr);
+    }
+    if (matchResult < 0) {
+	return TCL_ERROR;
+    }
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * NativeMatchType --
+ *
+ *	This routine is used by the globbing code to check if a file matches a
+ *	given type description.
+ *
+ * Results:
+ *	The return value is 1, 0 or -1 indicating whether the file matches the
+ *	given criteria, does not match them, or an error occurred (in which
+ *	case an error is left in interp).
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+NativeMatchType(
+    Tcl_Interp *interp,       /* Interpreter to receive errors. */
+    const char *nativeEntry,  /* Native path to check. */
+    const char *nativeName,   /* Native filename to check. */
+    Tcl_GlobTypeData *types)  /* Type description to match against. */
+{
+    Tcl_StatBuf buf;
+
+    if (types == NULL) {
+	/*
+	 * Simply check for the file's existence, but do it with lstat, in
+	 * case it is a link to a file which doesn't exist (since that case
+	 * would not show up if we used 'access' or 'stat')
+	 */
+
+	if (TclOSlstat(nativeEntry, &buf) != 0) {
+	    return 0;
+	}
+	return 1;
+    }
+
+    if (types->perm != 0) {
+	if (TclOSstat(nativeEntry, &buf) != 0) {
+	    /*
+	     * Either the file has disappeared between the 'readdir' call and
+	     * the 'stat' call, or the file is a link to a file which doesn't
+	     * exist (which we could ascertain with lstat), or there is some
+	     * other strange problem. In all these cases, we define this to
+	     * mean the file does not match any defined permission, and
+	     * therefore it is not added to the list of files to return.
+	     */
+
+	    return 0;
+	}
+
+	/*
+	 * readonly means that there are NO write permissions (even for user),
+	 * but execute is OK for anybody OR that the user immutable flag is
+	 * set (where supported).
+	 */
+
+	if (((types->perm & TCL_GLOB_PERM_RONLY) &&
+#if defined(HAVE_CHFLAGS) && defined(UF_IMMUTABLE)
+		!(buf.st_flags & UF_IMMUTABLE) &&
+#endif
+		(buf.st_mode & (S_IWOTH|S_IWGRP|S_IWUSR))) ||
+	    ((types->perm & TCL_GLOB_PERM_R) &&
+		(access(nativeEntry, R_OK) != 0)) ||
+	    ((types->perm & TCL_GLOB_PERM_W) &&
+		(access(nativeEntry, W_OK) != 0)) ||
+	    ((types->perm & TCL_GLOB_PERM_X) &&
+		(access(nativeEntry, X_OK) != 0))
+#ifndef MAC_OSX_TCL
+	    || ((types->perm & TCL_GLOB_PERM_HIDDEN) &&
+		(*nativeName != '.'))
+#endif /* MAC_OSX_TCL */
+		) {
+	    return 0;
+	}
+    }
+    if (types->type != 0) {
+	if (types->perm == 0) {
+	    /*
+	     * We haven't yet done a stat on the file.
+	     */
+
+	    if (TclOSstat(nativeEntry, &buf) != 0) {
+		/*
+		 * Posix error occurred. The only ok case is if this is a link
+		 * to a nonexistent file, and the user did 'glob -l'. So we
+		 * check that here:
+		 */
+
+		if ((types->type & TCL_GLOB_TYPE_LINK)
+			&& (TclOSlstat(nativeEntry, &buf) == 0)
+			&& S_ISLNK(buf.st_mode)) {
+		    return 1;
+		}
+		return 0;
+	    }
+	}
+
+	/*
+	 * In order bcdpsfl as in 'find -t'
+	 */
+
+	if (    ((types->type & TCL_GLOB_TYPE_BLOCK)&& S_ISBLK(buf.st_mode)) ||
+		((types->type & TCL_GLOB_TYPE_CHAR) && S_ISCHR(buf.st_mode)) ||
+		((types->type & TCL_GLOB_TYPE_DIR)  && S_ISDIR(buf.st_mode)) ||
+		((types->type & TCL_GLOB_TYPE_PIPE) && S_ISFIFO(buf.st_mode))||
+#ifdef S_ISSOCK
+		((types->type & TCL_GLOB_TYPE_SOCK) && S_ISSOCK(buf.st_mode))||
+#endif /* S_ISSOCK */
+		((types->type & TCL_GLOB_TYPE_FILE) && S_ISREG(buf.st_mode))) {
+	    /*
+	     * Do nothing - this file is ok.
+	     */
+	} else {
+#ifdef S_ISLNK
+	    if ((types->type & TCL_GLOB_TYPE_LINK)
+		    && (TclOSlstat(nativeEntry, &buf) == 0)
+		    && S_ISLNK(buf.st_mode)) {
+		goto filetypeOK;
+	    }
+#endif /* S_ISLNK */
+	    return 0;
+	}
+    }
+  filetypeOK:
+
+    /*
+     * If we're on OSX, we also have to worry about matching the file creator
+     * code (if specified). Do that now.
+     */
+
+#ifdef MAC_OSX_TCL
+    if (types->macType != NULL || types->macCreator != NULL ||
+	    (types->perm & TCL_GLOB_PERM_HIDDEN)) {
+	int matchResult;
+
+	if (types->perm == 0 && types->type == 0) {
+	    /*
+	     * We haven't yet done a stat on the file.
+	     */
+
+	    if (TclOSstat(nativeEntry, &buf) != 0) {
+		return 0;
+	    }
+	}
+
+	matchResult = TclMacOSXMatchType(interp, nativeEntry, nativeName,
+		&buf, types);
+	if (matchResult != 1) {
+	    return matchResult;
+	}
+    }
+#endif /* MAC_OSX_TCL */
+
+    return 1;
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * TclpGetUserHome --
+ *
+ *	This function takes the specified user name and finds their home
+ *	directory.
+ *
+ * Results:
+ *	The result is a pointer to a string specifying the user's home
+ *	directory, or NULL if the user's home directory could not be
+ *	determined. Storage for the result string is allocated in bufferPtr;
+ *	the caller must call Tcl_DStringFree() when the result is no longer
+ *	needed.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+const char *
+TclpGetUserHome(
+    const char *name,		/* User name for desired home directory. */
+    Tcl_DString *bufferPtr)	/* Uninitialized or free DString filled with
+				 * name of user's home directory. */
+{
+    struct passwd *pwPtr;
+    Tcl_DString ds;
+    const char *native = Tcl_UtfToExternalDString(NULL, name, -1, &ds);
+
+    pwPtr = TclpGetPwNam(native);			/* INTL: Native. */
+    Tcl_DStringFree(&ds);
+
+    if (pwPtr == NULL) {
+	return NULL;
+    }
+    Tcl_ExternalToUtfDString(NULL, pwPtr->pw_dir, -1, bufferPtr);
+    return Tcl_DStringValue(bufferPtr);
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * TclpObjAccess --
+ *
+ *	This function replaces the library version of access().
+ *
+ * Results:
+ *	See access() documentation.
+ *
+ * Side effects:
+ *	See access() documentation.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+int
+TclpObjAccess(
+    Tcl_Obj *pathPtr,		/* Path of file to access */
+    int mode)			/* Permission setting. */
+{
+    const char *path = Tcl_FSGetNativePath(pathPtr);
+
+    if (path == NULL) {
+	return -1;
+    }
+    return access(path, mode);
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * TclpObjChdir --
+ *
+ *	This function replaces the library version of chdir().
+ *
+ * Results:
+ *	See chdir() documentation.
+ *
+ * Side effects:
+ *	See chdir() documentation.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+int
+TclpObjChdir(
+    Tcl_Obj *pathPtr)		/* Path to new working directory */
+{
+    const char *path = Tcl_FSGetNativePath(pathPtr);
+
+    if (path == NULL) {
+	return -1;
+    }
+    return chdir(path);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclpObjLstat --
+ *
+ *	This function replaces the library version of lstat().
+ *
+ * Results:
+ *	See lstat() documentation.
+ *
+ * Side effects:
+ *	See lstat() documentation.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclpObjLstat(
+    Tcl_Obj *pathPtr,		/* Path of file to stat */
+    Tcl_StatBuf *bufPtr)	/* Filled with results of stat call. */
+{
+    return TclOSlstat(Tcl_FSGetNativePath(pathPtr), bufPtr);
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * TclpGetNativeCwd --
+ *
+ *	This function replaces the library version of getcwd().
+ *
+ * Results:
+ *	The input and output are filesystem paths in native form. The result
+ *	is either the given clientData, if the working directory hasn't
+ *	changed, or a new clientData (owned by our caller), giving the new
+ *	native path, or NULL if the current directory could not be determined.
+ *	If NULL is returned, the caller can examine the standard posix error
+ *	codes to determine the cause of the problem.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+ClientData
+TclpGetNativeCwd(
+    ClientData clientData)
+{
+    char buffer[MAXPATHLEN+1];
+
+#ifdef USEGETWD
+    if (getwd(buffer) == NULL) {			/* INTL: Native. */
+	return NULL;
+    }
+#else
+    if (getcwd(buffer, MAXPATHLEN+1) == NULL) {		/* INTL: Native. */
+	return NULL;
+    }
+#endif /* USEGETWD */
+
+    if ((clientData == NULL) || strcmp(buffer, (const char *) clientData)) {
+	char *newCd = ckalloc(strlen(buffer) + 1);
+
+	strcpy(newCd, buffer);
+	return newCd;
+    }
+
+    /*
+     * No change to pwd.
+     */
+
+    return clientData;
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * TclpGetCwd --
+ *
+ *	This function replaces the library version of getcwd(). (Obsolete
+ *	function, only retained for old extensions which may call it
+ *	directly).
+ *
+ * Results:
+ *	The result is a pointer to a string specifying the current directory,
+ *	or NULL if the current directory could not be determined. If NULL is
+ *	returned, an error message is left in the interp's result. Storage for
+ *	the result string is allocated in bufferPtr; the caller must call
+ *	Tcl_DStringFree() when the result is no longer needed.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+const char *
+TclpGetCwd(
+    Tcl_Interp *interp,		/* If non-NULL, used for error reporting. */
+    Tcl_DString *bufferPtr)	/* Uninitialized or free DString filled with
+				 * name of current directory. */
+{
+    char buffer[MAXPATHLEN+1];
+
+#ifdef USEGETWD
+    if (getwd(buffer) == NULL)				/* INTL: Native. */
+#else
+    if (getcwd(buffer, MAXPATHLEN+1) == NULL)		/* INTL: Native. */
+#endif /* USEGETWD */
+    {
+	if (interp != NULL) {
+	    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+		    "error getting working directory name: %s",
+		    Tcl_PosixError(interp)));
+	}
+	return NULL;
+    }
+    return Tcl_ExternalToUtfDString(NULL, buffer, -1, bufferPtr);
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * TclpReadlink --
+ *
+ *	This function replaces the library version of readlink().
+ *
+ * Results:
+ *	The result is a pointer to a string specifying the contents of the
+ *	symbolic link given by 'path', or NULL if the symbolic link could not
+ *	be read. Storage for the result string is allocated in bufferPtr; the
+ *	caller must call Tcl_DStringFree() when the result is no longer
+ *	needed.
+ *
+ * Side effects:
+ *	See readlink() documentation.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+char *
+TclpReadlink(
+    const char *path,		/* Path of file to readlink (UTF-8). */
+    Tcl_DString *linkPtr)	/* Uninitialized or free DString filled with
+				 * contents of link (UTF-8). */
+{
+#ifndef DJGPP
+    char link[MAXPATHLEN];
+    int length;
+    const char *native;
+    Tcl_DString ds;
+
+    native = Tcl_UtfToExternalDString(NULL, path, -1, &ds);
+    length = readlink(native, link, sizeof(link));	/* INTL: Native. */
+    Tcl_DStringFree(&ds);
+
+    if (length < 0) {
+	return NULL;
+    }
+
+    Tcl_ExternalToUtfDString(NULL, link, length, linkPtr);
+    return Tcl_DStringValue(linkPtr);
+#else
+    return NULL;
+#endif /* !DJGPP */
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclpObjStat --
+ *
+ *	This function replaces the library version of stat().
+ *
+ * Results:
+ *	See stat() documentation.
+ *
+ * Side effects:
+ *	See stat() documentation.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclpObjStat(
+    Tcl_Obj *pathPtr,		/* Path of file to stat */
+    Tcl_StatBuf *bufPtr)	/* Filled with results of stat call. */
+{
+    const char *path = Tcl_FSGetNativePath(pathPtr);
+
+    if (path == NULL) {
+	return -1;
+    }
+    return TclOSstat(path, bufPtr);
+}
+
+#ifdef S_IFLNK
+
+Tcl_Obj *
+TclpObjLink(
+    Tcl_Obj *pathPtr,
+    Tcl_Obj *toPtr,
+    int linkAction)
+{
+    if (toPtr != NULL) {
+	const char *src = Tcl_FSGetNativePath(pathPtr);
+	const char *target = NULL;
+
+	if (src == NULL) {
+	    return NULL;
+	}
+
+	/*
+	 * If we're making a symbolic link and the path is relative, then we
+	 * must check whether it exists _relative_ to the directory in which
+	 * the src is found (not relative to the current cwd which is just not
+	 * relevant in this case).
+	 *
+	 * If we're making a hard link, then a relative path is just converted
+	 * to absolute relative to the cwd.
+	 */
+
+	if ((linkAction & TCL_CREATE_SYMBOLIC_LINK)
+		&& (Tcl_FSGetPathType(toPtr) == TCL_PATH_RELATIVE)) {
+	    Tcl_Obj *dirPtr, *absPtr;
+
+	    dirPtr = TclPathPart(NULL, pathPtr, TCL_PATH_DIRNAME);
+	    if (dirPtr == NULL) {
+		return NULL;
+	    }
+	    absPtr = Tcl_FSJoinToPath(dirPtr, 1, &toPtr);
+	    Tcl_IncrRefCount(absPtr);
+	    if (Tcl_FSAccess(absPtr, F_OK) == -1) {
+		Tcl_DecrRefCount(absPtr);
+		Tcl_DecrRefCount(dirPtr);
+
+		/*
+		 * Target doesn't exist.
+		 */
+
+		errno = ENOENT;
+		return NULL;
+	    }
+
+	    /*
+	     * Target exists; we'll construct the relative path we want below.
+	     */
+
+	    Tcl_DecrRefCount(absPtr);
+	    Tcl_DecrRefCount(dirPtr);
+	} else {
+	    target = Tcl_FSGetNativePath(toPtr);
+	    if (target == NULL) {
+		return NULL;
+	    }
+	    if (access(target, F_OK) == -1) {
+		/*
+		 * Target doesn't exist.
+		 */
+
+		errno = ENOENT;
+		return NULL;
+	    }
+	}
+
+	if (access(src, F_OK) != -1) {
+	    /*
+	     * Src exists.
+	     */
+
+	    errno = EEXIST;
+	    return NULL;
+	}
+
+	/*
+	 * Check symbolic link flag first, since we prefer to create these.
+	 */
+
+	if (linkAction & TCL_CREATE_SYMBOLIC_LINK) {
+	    int targetLen;
+	    Tcl_DString ds;
+	    Tcl_Obj *transPtr;
+
+	    /*
+	     * Now we don't want to link to the absolute, normalized path.
+	     * Relative links are quite acceptable (but links to ~user are not
+	     * -- these must be expanded first).
+	     */
+
+	    transPtr = Tcl_FSGetTranslatedPath(NULL, toPtr);
+	    if (transPtr == NULL) {
+		return NULL;
+	    }
+	    target = Tcl_GetStringFromObj(transPtr, &targetLen);
+	    target = Tcl_UtfToExternalDString(NULL, target, targetLen, &ds);
+	    Tcl_DecrRefCount(transPtr);
+
+	    if (symlink(target, src) != 0) {
+		toPtr = NULL;
+	    }
+	    Tcl_DStringFree(&ds);
+	} else if (linkAction & TCL_CREATE_HARD_LINK) {
+	    if (link(target, src) != 0) {
+		return NULL;
+	    }
+	} else {
+	    errno = ENODEV;
+	    return NULL;
+	}
+	return toPtr;
+    } else {
+	Tcl_Obj *linkPtr = NULL;
+
+	char link[MAXPATHLEN];
+	int length;
+	Tcl_DString ds;
+	Tcl_Obj *transPtr;
+
+	transPtr = Tcl_FSGetTranslatedPath(NULL, pathPtr);
+	if (transPtr == NULL) {
+	    return NULL;
+	}
+	Tcl_DecrRefCount(transPtr);
+
+	length = readlink(Tcl_FSGetNativePath(pathPtr), link, sizeof(link));
+	if (length < 0) {
+	    return NULL;
+	}
+
+	Tcl_ExternalToUtfDString(NULL, link, length, &ds);
+	linkPtr = TclDStringToObj(&ds);
+	Tcl_IncrRefCount(linkPtr);
+	return linkPtr;
+    }
+}
+#endif /* S_IFLNK */
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * TclpFilesystemPathType --
+ *
+ *	This function is part of the native filesystem support, and returns
+ *	the path type of the given path. Right now it simply returns NULL. In
+ *	the future it could return specific path types, like 'nfs', 'samba',
+ *	'FAT32', etc.
+ *
+ * Results:
+ *	NULL at present.
+ *
+ * Side effects:
+ *	None.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+Tcl_Obj *
+TclpFilesystemPathType(
+    Tcl_Obj *pathPtr)
+{
+    /*
+     * All native paths are of the same type.
+     */
+
+    return NULL;
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * TclpNativeToNormalized --
+ *
+ *	Convert native format to a normalized path object, with refCount of
+ *	zero.
+ *
+ *	Currently assumes all native paths are actually normalized already, so
+ *	if the path given is not normalized this will actually just convert to
+ *	a valid string path, but not necessarily a normalized one.
+ *
+ * Results:
+ *	A valid normalized path.
+ *
+ * Side effects:
+ *	None.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+Tcl_Obj *
+TclpNativeToNormalized(
+    ClientData clientData)
+{
+    Tcl_DString ds;
+
+    Tcl_ExternalToUtfDString(NULL, (const char *) clientData, -1, &ds);
+    return TclDStringToObj(&ds);
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * TclNativeCreateNativeRep --
+ *
+ *	Create a native representation for the given path.
+ *
+ * Results:
+ *	The nativePath representation.
+ *
+ * Side effects:
+ *	Memory will be allocated. The path may need to be normalized.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+ClientData
+TclNativeCreateNativeRep(
+    Tcl_Obj *pathPtr)
+{
+    char *nativePathPtr;
+    const char *str;
+    Tcl_DString ds;
+    Tcl_Obj *validPathPtr;
+    int len;
+
+    if (TclFSCwdIsNative()) {
+	/*
+	 * The cwd is native, which means we can use the translated path
+	 * without worrying about normalization (this will also usually be
+	 * shorter so the utf-to-external conversion will be somewhat faster).
+	 */
+
+	validPathPtr = Tcl_FSGetTranslatedPath(NULL, pathPtr);
+	if (validPathPtr == NULL) {
+	    return NULL;
+	}
+    } else {
+	/*
+	 * Make sure the normalized path is set.
+	 */
+
+	validPathPtr = Tcl_FSGetNormalizedPath(NULL, pathPtr);
+	if (validPathPtr == NULL) {
+	    return NULL;
+	}
+	Tcl_IncrRefCount(validPathPtr);
+    }
+
+    str = Tcl_GetStringFromObj(validPathPtr, &len);
+    Tcl_UtfToExternalDString(NULL, str, len, &ds);
+    len = Tcl_DStringLength(&ds) + sizeof(char);
+    if (strlen(Tcl_DStringValue(&ds)) < len - sizeof(char)) {
+	/* See bug [3118489]: NUL in filenames */
+	Tcl_DecrRefCount(validPathPtr);
+	Tcl_DStringFree(&ds);
+	return NULL;
+    }
+    Tcl_DecrRefCount(validPathPtr);
+    nativePathPtr = ckalloc(len);
+    memcpy(nativePathPtr, Tcl_DStringValue(&ds), (size_t) len);
+
+    Tcl_DStringFree(&ds);
+    return nativePathPtr;
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * TclNativeDupInternalRep --
+ *
+ *	Duplicate the native representation.
+ *
+ * Results:
+ *	The copied native representation, or NULL if it is not possible to
+ *	copy the representation.
+ *
+ * Side effects:
+ *	Memory will be allocated for the copy.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+ClientData
+TclNativeDupInternalRep(
+    ClientData clientData)
+{
+    char *copy;
+    size_t len;
+
+    if (clientData == NULL) {
+	return NULL;
+    }
+
+    /*
+     * ASCII representation when running on Unix.
+     */
+
+    len = (strlen((const char*) clientData) + 1) * sizeof(char);
+
+    copy = ckalloc(len);
+    memcpy(copy, clientData, len);
+    return copy;
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * TclpUtime --
+ *
+ *	Set the modification date for a file.
+ *
+ * Results:
+ *	0 on success, -1 on error.
+ *
+ * Side effects:
+ *	None.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+int
+TclpUtime(
+    Tcl_Obj *pathPtr,		/* File to modify */
+    struct utimbuf *tval)	/* New modification date structure */
+{
+    return utime(Tcl_FSGetNativePath(pathPtr), tval);
+}
+
+#ifdef __CYGWIN__
+
+int
+TclOSstat(
+    const char *name,
+    void *cygstat)
+{
+    struct stat buf;
+    Tcl_StatBuf *statBuf = cygstat;
+    int result = stat(name, &buf);
+
+    statBuf->st_mode = buf.st_mode;
+    statBuf->st_ino = buf.st_ino;
+    statBuf->st_dev = buf.st_dev;
+    statBuf->st_rdev = buf.st_rdev;
+    statBuf->st_nlink = buf.st_nlink;
+    statBuf->st_uid = buf.st_uid;
+    statBuf->st_gid = buf.st_gid;
+    statBuf->st_size = buf.st_size;
+    statBuf->st_atime = buf.st_atime;
+    statBuf->st_mtime = buf.st_mtime;
+    statBuf->st_ctime = buf.st_ctime;
+    return result;
+}
+
+int
+TclOSlstat(
+    const char *name,
+    void *cygstat)
+{
+    struct stat buf;
+    Tcl_StatBuf *statBuf = cygstat;
+    int result = lstat(name, &buf);
+
+    statBuf->st_mode = buf.st_mode;
+    statBuf->st_ino = buf.st_ino;
+    statBuf->st_dev = buf.st_dev;
+    statBuf->st_rdev = buf.st_rdev;
+    statBuf->st_nlink = buf.st_nlink;
+    statBuf->st_uid = buf.st_uid;
+    statBuf->st_gid = buf.st_gid;
+    statBuf->st_size = buf.st_size;
+    statBuf->st_atime = buf.st_atime;
+    statBuf->st_mtime = buf.st_mtime;
+    statBuf->st_ctime = buf.st_ctime;
+    return result;
+}
+#endif /* CYGWIN */
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/tcl8.6/unix/tclUnixInit.c b/tcl8.6/unix/tclUnixInit.c
new file mode 100644
index 0000000..4fd41a7
--- /dev/null
+++ b/tcl8.6/unix/tclUnixInit.c
@@ -0,0 +1,1094 @@
+/*
+ * tclUnixInit.c --
+ *
+ *	Contains the Unix-specific interpreter initialization functions.
+ *
+ * Copyright (c) 1995-1997 Sun Microsystems, Inc.
+ * Copyright (c) 1999 by Scriptics Corporation.
+ * All rights reserved.
+ */
+
+#include "tclInt.h"
+#include <stddef.h>
+#include <locale.h>
+#ifdef HAVE_LANGINFO
+#   include <langinfo.h>
+#   ifdef __APPLE__
+#	if defined(HAVE_WEAK_IMPORT) && MAC_OS_X_VERSION_MIN_REQUIRED < 1030
+	    /* Support for weakly importing nl_langinfo on Darwin. */
+#	    define WEAK_IMPORT_NL_LANGINFO
+	    extern char *nl_langinfo(nl_item) WEAK_IMPORT_ATTRIBUTE;
+#	endif
+#    endif
+#endif
+#include <sys/resource.h>
+#if defined(__FreeBSD__) && defined(__GNUC__)
+#   include <floatingpoint.h>
+#endif
+#if defined(__bsdi__)
+#   include <sys/param.h>
+#   if _BSDI_VERSION > 199501
+#	include <dlfcn.h>
+#   endif
+#endif
+
+#ifdef __CYGWIN__
+DLLIMPORT extern __stdcall unsigned char GetVersionExW(void *);
+DLLIMPORT extern __stdcall void *GetModuleHandleW(const void *);
+DLLIMPORT extern __stdcall void FreeLibrary(void *);
+DLLIMPORT extern __stdcall void *GetProcAddress(void *, const char *);
+DLLIMPORT extern __stdcall void GetSystemInfo(void *);
+
+#define NUMPLATFORMS 4
+static const char *const platforms[NUMPLATFORMS] = {
+    "Win32s", "Windows 95", "Windows NT", "Windows CE"
+};
+
+#define NUMPROCESSORS 11
+static const char *const processors[NUMPROCESSORS] = {
+    "intel", "mips", "alpha", "ppc", "shx", "arm", "ia64", "alpha64", "msil",
+    "amd64", "ia32_on_win64"
+};
+
+typedef struct {
+  union {
+    DWORD  dwOemId;
+    struct {
+      int wProcessorArchitecture;
+      int wReserved;
+    };
+  };
+  DWORD     dwPageSize;
+  void *lpMinimumApplicationAddress;
+  void *lpMaximumApplicationAddress;
+  void *dwActiveProcessorMask;
+  DWORD     dwNumberOfProcessors;
+  DWORD     dwProcessorType;
+  DWORD     dwAllocationGranularity;
+  int      wProcessorLevel;
+  int      wProcessorRevision;
+} SYSTEM_INFO;
+
+typedef struct {
+  DWORD dwOSVersionInfoSize;
+  DWORD dwMajorVersion;
+  DWORD dwMinorVersion;
+  DWORD dwBuildNumber;
+  DWORD dwPlatformId;
+  wchar_t szCSDVersion[128];
+} OSVERSIONINFOW;
+#endif
+
+#ifdef HAVE_COREFOUNDATION
+#include <CoreFoundation/CoreFoundation.h>
+#endif
+
+/*
+ * Tcl tries to use standard and homebrew methods to guess the right encoding
+ * on the platform. However, there is always a final fallback, and this value
+ * is it. Make sure it is a real Tcl encoding.
+ */
+
+#ifndef TCL_DEFAULT_ENCODING
+#define TCL_DEFAULT_ENCODING "iso8859-1"
+#endif
+
+/*
+ * Default directory in which to look for Tcl library scripts. The symbol is
+ * defined by Makefile.
+ */
+
+static char defaultLibraryDir[sizeof(TCL_LIBRARY)+200] = TCL_LIBRARY;
+
+/*
+ * Directory in which to look for packages (each package is typically
+ * installed as a subdirectory of this directory). The symbol is defined by
+ * Makefile.
+ */
+
+static char pkgPath[sizeof(TCL_PACKAGE_PATH)+200] = TCL_PACKAGE_PATH;
+
+/*
+ * The following table is used to map from Unix locale strings to encoding
+ * files. If HAVE_LANGINFO is defined, then this is a fallback table when the
+ * result from nl_langinfo isn't a recognized encoding. Otherwise this is the
+ * first list checked for a mapping from env encoding to Tcl encoding name.
+ */
+
+typedef struct LocaleTable {
+    const char *lang;
+    const char *encoding;
+} LocaleTable;
+
+/*
+ * The table below is sorted for the sake of doing binary searches on it. The
+ * indenting reflects different categories of data. The leftmost data
+ * represent the encoding names directly implemented by data files in Tcl's
+ * default encoding directory. Indented by one TAB are the encoding names that
+ * are common alternative spellings. Indented by two TABs are the accumulated
+ * "bug fixes" that have been added to deal with the wide variability seen
+ * among existing platforms.
+ */
+
+static const LocaleTable localeTable[] = {
+	    {"",		"iso8859-1"},
+		    {"ansi-1251",	"cp1251"},
+	    {"ansi_x3.4-1968",	"iso8859-1"},
+    {"ascii",		"ascii"},
+    {"big5",		"big5"},
+    {"cp1250",		"cp1250"},
+    {"cp1251",		"cp1251"},
+    {"cp1252",		"cp1252"},
+    {"cp1253",		"cp1253"},
+    {"cp1254",		"cp1254"},
+    {"cp1255",		"cp1255"},
+    {"cp1256",		"cp1256"},
+    {"cp1257",		"cp1257"},
+    {"cp1258",		"cp1258"},
+    {"cp437",		"cp437"},
+    {"cp737",		"cp737"},
+    {"cp775",		"cp775"},
+    {"cp850",		"cp850"},
+    {"cp852",		"cp852"},
+    {"cp855",		"cp855"},
+    {"cp857",		"cp857"},
+    {"cp860",		"cp860"},
+    {"cp861",		"cp861"},
+    {"cp862",		"cp862"},
+    {"cp863",		"cp863"},
+    {"cp864",		"cp864"},
+    {"cp865",		"cp865"},
+    {"cp866",		"cp866"},
+    {"cp869",		"cp869"},
+    {"cp874",		"cp874"},
+    {"cp932",		"cp932"},
+    {"cp936",		"cp936"},
+    {"cp949",		"cp949"},
+    {"cp950",		"cp950"},
+    {"dingbats",	"dingbats"},
+    {"ebcdic",		"ebcdic"},
+    {"euc-cn",		"euc-cn"},
+    {"euc-jp",		"euc-jp"},
+    {"euc-kr",		"euc-kr"},
+		    {"eucjp",		"euc-jp"},
+		    {"euckr",		"euc-kr"},
+		    {"euctw",		"euc-cn"},
+    {"gb12345",		"gb12345"},
+    {"gb1988",		"gb1988"},
+    {"gb2312",		"gb2312"},
+		    {"gb2312-1980",	"gb2312"},
+    {"gb2312-raw",	"gb2312-raw"},
+		    {"greek8",		"cp869"},
+	    {"ibm1250",		"cp1250"},
+	    {"ibm1251",		"cp1251"},
+	    {"ibm1252",		"cp1252"},
+	    {"ibm1253",		"cp1253"},
+	    {"ibm1254",		"cp1254"},
+	    {"ibm1255",		"cp1255"},
+	    {"ibm1256",		"cp1256"},
+	    {"ibm1257",		"cp1257"},
+	    {"ibm1258",		"cp1258"},
+	    {"ibm437",		"cp437"},
+	    {"ibm737",		"cp737"},
+	    {"ibm775",		"cp775"},
+	    {"ibm850",		"cp850"},
+	    {"ibm852",		"cp852"},
+	    {"ibm855",		"cp855"},
+	    {"ibm857",		"cp857"},
+	    {"ibm860",		"cp860"},
+	    {"ibm861",		"cp861"},
+	    {"ibm862",		"cp862"},
+	    {"ibm863",		"cp863"},
+	    {"ibm864",		"cp864"},
+	    {"ibm865",		"cp865"},
+	    {"ibm866",		"cp866"},
+	    {"ibm869",		"cp869"},
+	    {"ibm874",		"cp874"},
+	    {"ibm932",		"cp932"},
+	    {"ibm936",		"cp936"},
+	    {"ibm949",		"cp949"},
+	    {"ibm950",		"cp950"},
+	    {"iso-2022",	"iso2022"},
+	    {"iso-2022-jp",	"iso2022-jp"},
+	    {"iso-2022-kr",	"iso2022-kr"},
+	    {"iso-8859-1",	"iso8859-1"},
+	    {"iso-8859-10",	"iso8859-10"},
+	    {"iso-8859-13",	"iso8859-13"},
+	    {"iso-8859-14",	"iso8859-14"},
+	    {"iso-8859-15",	"iso8859-15"},
+	    {"iso-8859-16",	"iso8859-16"},
+	    {"iso-8859-2",	"iso8859-2"},
+	    {"iso-8859-3",	"iso8859-3"},
+	    {"iso-8859-4",	"iso8859-4"},
+	    {"iso-8859-5",	"iso8859-5"},
+	    {"iso-8859-6",	"iso8859-6"},
+	    {"iso-8859-7",	"iso8859-7"},
+	    {"iso-8859-8",	"iso8859-8"},
+	    {"iso-8859-9",	"iso8859-9"},
+    {"iso2022",		"iso2022"},
+    {"iso2022-jp",	"iso2022-jp"},
+    {"iso2022-kr",	"iso2022-kr"},
+    {"iso8859-1",	"iso8859-1"},
+    {"iso8859-10",	"iso8859-10"},
+    {"iso8859-13",	"iso8859-13"},
+    {"iso8859-14",	"iso8859-14"},
+    {"iso8859-15",	"iso8859-15"},
+    {"iso8859-16",	"iso8859-16"},
+    {"iso8859-2",	"iso8859-2"},
+    {"iso8859-3",	"iso8859-3"},
+    {"iso8859-4",	"iso8859-4"},
+    {"iso8859-5",	"iso8859-5"},
+    {"iso8859-6",	"iso8859-6"},
+    {"iso8859-7",	"iso8859-7"},
+    {"iso8859-8",	"iso8859-8"},
+    {"iso8859-9",	"iso8859-9"},
+		    {"iso88591",	"iso8859-1"},
+		    {"iso885915",	"iso8859-15"},
+		    {"iso88592",	"iso8859-2"},
+		    {"iso88595",	"iso8859-5"},
+		    {"iso88596",	"iso8859-6"},
+		    {"iso88597",	"iso8859-7"},
+		    {"iso88598",	"iso8859-8"},
+		    {"iso88599",	"iso8859-9"},
+#ifdef hpux
+		    {"ja",		"shiftjis"},
+#else
+		    {"ja",		"euc-jp"},
+#endif
+		    {"ja_jp",		"euc-jp"},
+		    {"ja_jp.euc",	"euc-jp"},
+		    {"ja_jp.eucjp",	"euc-jp"},
+		    {"ja_jp.jis",	"iso2022-jp"},
+		    {"ja_jp.mscode",	"shiftjis"},
+		    {"ja_jp.sjis",	"shiftjis"},
+		    {"ja_jp.ujis",	"euc-jp"},
+		    {"japan",		"euc-jp"},
+#ifdef hpux
+		    {"japanese",	"shiftjis"},
+#else
+		    {"japanese",	"euc-jp"},
+#endif
+		    {"japanese-sjis",	"shiftjis"},
+		    {"japanese-ujis",	"euc-jp"},
+		    {"japanese.euc",	"euc-jp"},
+		    {"japanese.sjis",	"shiftjis"},
+    {"jis0201",		"jis0201"},
+    {"jis0208",		"jis0208"},
+    {"jis0212",		"jis0212"},
+		    {"jp_jp",		"shiftjis"},
+		    {"ko",		"euc-kr"},
+		    {"ko_kr",		"euc-kr"},
+		    {"ko_kr.euc",	"euc-kr"},
+		    {"ko_kw.euckw",	"euc-kr"},
+    {"koi8-r",		"koi8-r"},
+    {"koi8-u",		"koi8-u"},
+		    {"korean",		"euc-kr"},
+    {"ksc5601",		"ksc5601"},
+    {"maccenteuro",	"macCentEuro"},
+    {"maccroatian",	"macCroatian"},
+    {"maccyrillic",	"macCyrillic"},
+    {"macdingbats",	"macDingbats"},
+    {"macgreek",	"macGreek"},
+    {"maciceland",	"macIceland"},
+    {"macjapan",	"macJapan"},
+    {"macroman",	"macRoman"},
+    {"macromania",	"macRomania"},
+    {"macthai",		"macThai"},
+    {"macturkish",	"macTurkish"},
+    {"macukraine",	"macUkraine"},
+		    {"roman8",		"iso8859-1"},
+		    {"ru",		"iso8859-5"},
+		    {"ru_ru",		"iso8859-5"},
+		    {"ru_su",		"iso8859-5"},
+    {"shiftjis",	"shiftjis"},
+		    {"sjis",		"shiftjis"},
+    {"symbol",		"symbol"},
+    {"tis-620",		"tis-620"},
+		    {"tis620",		"tis-620"},
+		    {"turkish8",	"cp857"},
+		    {"utf8",		"utf-8"},
+		    {"zh",		"cp936"},
+		    {"zh_cn.gb2312",	"euc-cn"},
+		    {"zh_cn.gbk",	"euc-cn"},
+		    {"zh_cz.gb2312",	"euc-cn"},
+		    {"zh_tw",		"euc-tw"},
+		    {"zh_tw.big5",	"big5"},
+};
+
+#ifdef HAVE_COREFOUNDATION
+static int		MacOSXGetLibraryPath(Tcl_Interp *interp,
+			    int maxPathLen, char *tclLibPath);
+#endif /* HAVE_COREFOUNDATION */
+#if defined(__APPLE__) && (defined(TCL_LOAD_FROM_MEMORY) || ( \
+	defined(MAC_OS_X_VERSION_MIN_REQUIRED) && ( \
+	(defined(TCL_THREADS) && MAC_OS_X_VERSION_MIN_REQUIRED < 1030) || \
+	(defined(__LP64__) && MAC_OS_X_VERSION_MIN_REQUIRED < 1050) || \
+	(defined(HAVE_COREFOUNDATION) && MAC_OS_X_VERSION_MIN_REQUIRED < 1050)\
+	)))
+/*
+ * Need to check Darwin release at runtime in tclUnixFCmd.c and tclLoadDyld.c:
+ * initialize release global at startup from uname().
+ */
+#define GET_DARWIN_RELEASE 1
+MODULE_SCOPE long tclMacOSXDarwinRelease;
+long tclMacOSXDarwinRelease = 0;
+#endif
+
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * TclpInitPlatform --
+ *
+ *	Initialize all the platform-dependant things like signals and
+ *	floating-point error handling.
+ *
+ *	Called at process initialization time.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	None.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+void
+TclpInitPlatform(void)
+{
+#ifdef DJGPP
+    tclPlatform = TCL_PLATFORM_WINDOWS;
+#else
+    tclPlatform = TCL_PLATFORM_UNIX;
+#endif
+
+    /*
+     * Make sure, that the standard FDs exist. [Bug 772288]
+     */
+
+    if (TclOSseek(0, (Tcl_SeekOffset) 0, SEEK_CUR) == -1 && errno == EBADF) {
+	open("/dev/null", O_RDONLY);
+    }
+    if (TclOSseek(1, (Tcl_SeekOffset) 0, SEEK_CUR) == -1 && errno == EBADF) {
+	open("/dev/null", O_WRONLY);
+    }
+    if (TclOSseek(2, (Tcl_SeekOffset) 0, SEEK_CUR) == -1 && errno == EBADF) {
+	open("/dev/null", O_WRONLY);
+    }
+
+    /*
+     * The code below causes SIGPIPE (broken pipe) errors to be ignored. This
+     * is needed so that Tcl processes don't die if they create child
+     * processes (e.g. using "exec" or "open") that terminate prematurely.
+     * The signal handler is only set up when the first interpreter is
+     * created; after this the application can override the handler with a
+     * different one of its own, if it wants.
+     */
+
+#ifdef SIGPIPE
+    (void) signal(SIGPIPE, SIG_IGN);
+#endif /* SIGPIPE */
+
+#if defined(__FreeBSD__) && defined(__GNUC__)
+    /*
+     * Adjust the rounding mode to be more conventional. Note that FreeBSD
+     * only provides the __fpsetreg() used by the following two for the GNU
+     * Compiler. When using, say, Intel's icc they break. (Partially based on
+     * patch in BSD ports system from root@celsius.bychok.com)
+     */
+
+    fpsetround(FP_RN);
+    (void) fpsetmask(0L);
+#endif
+
+#if defined(__bsdi__) && (_BSDI_VERSION > 199501)
+    /*
+     * Find local symbols. Don't report an error if we fail.
+     */
+
+    (void) dlopen(NULL, RTLD_NOW);			/* INTL: Native. */
+#endif
+
+    /*
+     * Initialize the C library's locale subsystem. This is required for input
+     * methods to work properly on X11. We only do this for LC_CTYPE because
+     * that's the necessary one, and we don't want to affect LC_TIME here.
+     * The side effect of setting the default locale should be to load any
+     * locale specific modules that are needed by X. [BUG: 5422 3345 4236 2522
+     * 2521].
+     */
+
+    setlocale(LC_CTYPE, "");
+
+    /*
+     * In case the initial locale is not "C", ensure that the numeric
+     * processing is done in "C" locale regardless. This is needed because Tcl
+     * relies on routines like strtod, but should not have locale dependent
+     * behavior.
+     */
+
+    setlocale(LC_NUMERIC, "C");
+
+#ifdef GET_DARWIN_RELEASE
+    {
+	struct utsname name;
+
+	if (!uname(&name)) {
+	    tclMacOSXDarwinRelease = strtol(name.release, NULL, 10);
+	}
+    }
+#endif
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * TclpInitLibraryPath --
+ *
+ *	This is the fallback routine that sets the library path if the
+ *	application has not set one by the first time it is needed.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Sets the library path to an initial value.
+ *
+ *-------------------------------------------------------------------------
+ */
+
+void
+TclpInitLibraryPath(
+    char **valuePtr,
+    int *lengthPtr,
+    Tcl_Encoding *encodingPtr)
+{
+#define LIBRARY_SIZE	    32
+    Tcl_Obj *pathPtr, *objPtr;
+    const char *str;
+    Tcl_DString buffer;
+
+    pathPtr = Tcl_NewObj();
+
+    /*
+     * Look for the library relative to the TCL_LIBRARY env variable. If the
+     * last dirname in the TCL_LIBRARY path does not match the last dirname in
+     * the installLib variable, use the last dir name of installLib in
+     * addition to the orginal TCL_LIBRARY path.
+     */
+
+    str = getenv("TCL_LIBRARY");			/* INTL: Native. */
+    Tcl_ExternalToUtfDString(NULL, str, -1, &buffer);
+    str = Tcl_DStringValue(&buffer);
+
+    if ((str != NULL) && (str[0] != '\0')) {
+	Tcl_DString ds;
+	int pathc;
+	const char **pathv;
+	char installLib[LIBRARY_SIZE];
+
+	Tcl_DStringInit(&ds);
+
+	/*
+	 * Initialize the substrings used when locating an executable. The
+	 * installLib variable computes the path as though the executable is
+	 * installed.
+	 */
+
+	sprintf(installLib, "lib/tcl%s", TCL_VERSION);
+
+	/*
+	 * If TCL_LIBRARY is set, search there.
+	 */
+
+	Tcl_ListObjAppendElement(NULL, pathPtr, Tcl_NewStringObj(str, -1));
+
+	Tcl_SplitPath(str, &pathc, &pathv);
+	if ((pathc > 0) && (strcasecmp(installLib + 4, pathv[pathc-1]) != 0)) {
+	    /*
+	     * If TCL_LIBRARY is set but refers to a different tcl
+	     * installation than the current version, try fiddling with the
+	     * specified directory to make it refer to this installation by
+	     * removing the old "tclX.Y" and substituting the current version
+	     * string.
+	     */
+
+	    pathv[pathc - 1] = installLib + 4;
+	    str = Tcl_JoinPath(pathc, pathv, &ds);
+	    Tcl_ListObjAppendElement(NULL, pathPtr, TclDStringToObj(&ds));
+	}
+	ckfree(pathv);
+    }
+
+    /*
+     * Finally, look for the library relative to the compiled-in path. This is
+     * needed when users install Tcl with an exec-prefix that is different
+     * from the prefix.
+     */
+
+    {
+#ifdef HAVE_COREFOUNDATION
+	char tclLibPath[MAXPATHLEN + 1];
+
+	if (MacOSXGetLibraryPath(NULL, MAXPATHLEN, tclLibPath) == TCL_OK) {
+	    str = tclLibPath;
+	} else
+#endif /* HAVE_COREFOUNDATION */
+	{
+	    /*
+	     * TODO: Pull this value from the TIP 59 table.
+	     */
+
+	    str = defaultLibraryDir;
+	}
+	if (str[0] != '\0') {
+	    objPtr = Tcl_NewStringObj(str, -1);
+	    Tcl_ListObjAppendElement(NULL, pathPtr, objPtr);
+	}
+    }
+    Tcl_DStringFree(&buffer);
+
+    *encodingPtr = Tcl_GetEncoding(NULL, NULL);
+    str = Tcl_GetStringFromObj(pathPtr, lengthPtr);
+    *valuePtr = ckalloc((*lengthPtr) + 1);
+    memcpy(*valuePtr, str, (size_t)(*lengthPtr)+1);
+    Tcl_DecrRefCount(pathPtr);
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * TclpSetInitialEncodings --
+ *
+ *	Based on the locale, determine the encoding of the operating system
+ *	and the default encoding for newly opened files.
+ *
+ *	Called at process initialization time, and part way through startup,
+ *	we verify that the initial encodings were correctly setup. Depending
+ *	on Tcl's environment, there may not have been enough information first
+ *	time through (above).
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	The Tcl library path is converted from native encoding to UTF-8, on
+ *	the first call, and the encodings may be changed on first or second
+ *	call.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+void
+TclpSetInitialEncodings(void)
+{
+    Tcl_DString encodingName;
+    Tcl_SetSystemEncoding(NULL,
+	    Tcl_GetEncodingNameFromEnvironment(&encodingName));
+    Tcl_DStringFree(&encodingName);
+}
+
+void
+TclpSetInterfaces(void)
+{
+    /* do nothing */
+}
+
+static const char *
+SearchKnownEncodings(
+    const char *encoding)
+{
+    int left = 0;
+    int right = sizeof(localeTable)/sizeof(LocaleTable);
+
+    while (left < right) {
+	int test = (left + right)/2;
+	int code = strcmp(localeTable[test].lang, encoding);
+
+	if (code == 0) {
+	    return localeTable[test].encoding;
+	}
+	if (code < 0) {
+	    left = test+1;
+	} else {
+	    right = test-1;
+	}
+    }
+    return NULL;
+}
+
+const char *
+Tcl_GetEncodingNameFromEnvironment(
+    Tcl_DString *bufPtr)
+{
+    const char *encoding;
+    const char *knownEncoding;
+
+    Tcl_DStringInit(bufPtr);
+
+    /*
+     * Determine the current encoding from the LC_* or LANG environment
+     * variables. We previously used setlocale() to determine the locale, but
+     * this does not work on some systems (e.g. Linux/i386 RH 5.0).
+     */
+
+#ifdef HAVE_LANGINFO
+    if (
+#ifdef WEAK_IMPORT_NL_LANGINFO
+	    nl_langinfo != NULL &&
+#endif
+	    setlocale(LC_CTYPE, "") != NULL) {
+	Tcl_DString ds;
+
+	/*
+	 * Use a DString so we can modify case.
+	 */
+
+	Tcl_DStringInit(&ds);
+	encoding = Tcl_DStringAppend(&ds, nl_langinfo(CODESET), -1);
+	Tcl_UtfToLower(Tcl_DStringValue(&ds));
+	knownEncoding = SearchKnownEncodings(encoding);
+	if (knownEncoding != NULL) {
+	    Tcl_DStringAppend(bufPtr, knownEncoding, -1);
+	} else if (NULL != Tcl_GetEncoding(NULL, encoding)) {
+	    Tcl_DStringAppend(bufPtr, encoding, -1);
+	}
+	Tcl_DStringFree(&ds);
+	if (Tcl_DStringLength(bufPtr)) {
+	    return Tcl_DStringValue(bufPtr);
+	}
+    }
+#endif /* HAVE_LANGINFO */
+
+    /*
+     * Classic fallback check. This tries a homebrew algorithm to determine
+     * what encoding should be used based on env vars.
+     */
+
+    encoding = getenv("LC_ALL");
+
+    if (encoding == NULL || encoding[0] == '\0') {
+	encoding = getenv("LC_CTYPE");
+    }
+    if (encoding == NULL || encoding[0] == '\0') {
+	encoding = getenv("LANG");
+    }
+    if (encoding == NULL || encoding[0] == '\0') {
+	encoding = NULL;
+    }
+
+    if (encoding != NULL) {
+	const char *p;
+	Tcl_DString ds;
+
+	Tcl_DStringInit(&ds);
+	p = encoding;
+	encoding = Tcl_DStringAppend(&ds, p, -1);
+	Tcl_UtfToLower(Tcl_DStringValue(&ds));
+
+	knownEncoding = SearchKnownEncodings(encoding);
+	if (knownEncoding != NULL) {
+	    Tcl_DStringAppend(bufPtr, knownEncoding, -1);
+	} else if (NULL != Tcl_GetEncoding(NULL, encoding)) {
+	    Tcl_DStringAppend(bufPtr, encoding, -1);
+	}
+	if (Tcl_DStringLength(bufPtr)) {
+	    Tcl_DStringFree(&ds);
+	    return Tcl_DStringValue(bufPtr);
+	}
+
+	/*
+	 * We didn't recognize the full value as an encoding name. If there is
+	 * an encoding subfield, we can try to guess from that.
+	 */
+
+	for (p = encoding; *p != '\0'; p++) {
+	    if (*p == '.') {
+		p++;
+		break;
+	    }
+	}
+	if (*p != '\0') {
+	    knownEncoding = SearchKnownEncodings(p);
+	    if (knownEncoding != NULL) {
+		Tcl_DStringAppend(bufPtr, knownEncoding, -1);
+	    } else if (NULL != Tcl_GetEncoding(NULL, p)) {
+		Tcl_DStringAppend(bufPtr, p, -1);
+	    }
+	}
+	Tcl_DStringFree(&ds);
+	if (Tcl_DStringLength(bufPtr)) {
+	    return Tcl_DStringValue(bufPtr);
+	}
+    }
+    return Tcl_DStringAppend(bufPtr, TCL_DEFAULT_ENCODING, -1);
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * TclpSetVariables --
+ *
+ *	Performs platform-specific interpreter initialization related to the
+ *	tcl_library and tcl_platform variables, and other platform-specific
+ *	things.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Sets "tclDefaultLibrary", "tcl_pkgPath", and "tcl_platform" Tcl
+ *	variables.
+ *
+ *----------------------------------------------------------------------
+ */
+
+#if defined(HAVE_COREFOUNDATION) && MAC_OS_X_VERSION_MAX_ALLOWED > 1020
+/*
+ * Helper because whether CFLocaleCopyCurrent and CFLocaleGetIdentifier are
+ * strongly or weakly bound varies by version of OSX, triggering warnings.
+ */
+
+static inline void
+InitMacLocaleInfoVar(
+    CFLocaleRef (*localeCopyCurrent)(void),
+    CFStringRef (*localeGetIdentifier)(CFLocaleRef),
+    Tcl_Interp *interp)
+{
+    CFLocaleRef localeRef;
+    CFStringRef locale;
+    char loc[256];
+
+    if (localeCopyCurrent == NULL || localeGetIdentifier == NULL) {
+	return;
+    }
+
+    localeRef = localeCopyCurrent();
+    if (!localeRef) {
+	return;
+    }
+
+    locale = localeGetIdentifier(localeRef);
+    if (locale && CFStringGetCString(locale, loc, 256,
+	    kCFStringEncodingUTF8)) {
+	if (!Tcl_CreateNamespace(interp, "::tcl::mac", NULL, NULL)) {
+	    Tcl_ResetResult(interp);
+	}
+	Tcl_SetVar(interp, "::tcl::mac::locale", loc, TCL_GLOBAL_ONLY);
+    }
+    CFRelease(localeRef);
+}
+#endif /*defined(HAVE_COREFOUNDATION) && MAC_OS_X_VERSION_MAX_ALLOWED > 1020*/
+
+void
+TclpSetVariables(
+    Tcl_Interp *interp)
+{
+#ifdef __CYGWIN__
+    SYSTEM_INFO sysInfo;
+    static OSVERSIONINFOW osInfo;
+    static int osInfoInitialized = 0;
+    char buffer[TCL_INTEGER_SPACE * 2];
+#elif !defined(NO_UNAME)
+    struct utsname name;
+#endif
+    int unameOK;
+    Tcl_DString ds;
+
+#ifdef HAVE_COREFOUNDATION
+    char tclLibPath[MAXPATHLEN + 1];
+
+    /*
+     * Set msgcat fallback locale to current CFLocale identifier.
+     */
+
+#if MAC_OS_X_VERSION_MAX_ALLOWED > 1020
+    InitMacLocaleInfoVar(CFLocaleCopyCurrent, CFLocaleGetIdentifier, interp);
+#endif /* MAC_OS_X_VERSION_MAX_ALLOWED > 1020 */
+
+    if (MacOSXGetLibraryPath(interp, MAXPATHLEN, tclLibPath) == TCL_OK) {
+	const char *str;
+	CFBundleRef bundleRef;
+
+	Tcl_SetVar(interp, "tclDefaultLibrary", tclLibPath, TCL_GLOBAL_ONLY);
+	Tcl_SetVar(interp, "tcl_pkgPath", tclLibPath, TCL_GLOBAL_ONLY);
+	Tcl_SetVar(interp, "tcl_pkgPath", " ",
+		TCL_GLOBAL_ONLY | TCL_APPEND_VALUE);
+
+	str = TclGetEnv("DYLD_FRAMEWORK_PATH", &ds);
+	if ((str != NULL) && (str[0] != '\0')) {
+	    char *p = Tcl_DStringValue(&ds);
+
+	    /*
+	     * Convert DYLD_FRAMEWORK_PATH from colon to space separated.
+	     */
+
+	    do {
+		if (*p == ':') {
+		    *p = ' ';
+		}
+	    } while (*p++);
+	    Tcl_SetVar(interp, "tcl_pkgPath", Tcl_DStringValue(&ds),
+		    TCL_GLOBAL_ONLY | TCL_APPEND_VALUE);
+	    Tcl_SetVar(interp, "tcl_pkgPath", " ",
+		    TCL_GLOBAL_ONLY | TCL_APPEND_VALUE);
+	    Tcl_DStringFree(&ds);
+	}
+	bundleRef = CFBundleGetMainBundle();
+	if (bundleRef) {
+	    CFURLRef frameworksURL;
+	    Tcl_StatBuf statBuf;
+
+	    frameworksURL = CFBundleCopyPrivateFrameworksURL(bundleRef);
+	    if (frameworksURL) {
+		if (CFURLGetFileSystemRepresentation(frameworksURL, TRUE,
+			(unsigned char*) tclLibPath, MAXPATHLEN) &&
+			! TclOSstat(tclLibPath, &statBuf) &&
+			S_ISDIR(statBuf.st_mode)) {
+		    Tcl_SetVar(interp, "tcl_pkgPath", tclLibPath,
+			    TCL_GLOBAL_ONLY | TCL_APPEND_VALUE);
+		    Tcl_SetVar(interp, "tcl_pkgPath", " ",
+			    TCL_GLOBAL_ONLY | TCL_APPEND_VALUE);
+		}
+		CFRelease(frameworksURL);
+	    }
+	    frameworksURL = CFBundleCopySharedFrameworksURL(bundleRef);
+	    if (frameworksURL) {
+		if (CFURLGetFileSystemRepresentation(frameworksURL, TRUE,
+			(unsigned char*) tclLibPath, MAXPATHLEN) &&
+			! TclOSstat(tclLibPath, &statBuf) &&
+			S_ISDIR(statBuf.st_mode)) {
+		    Tcl_SetVar(interp, "tcl_pkgPath", tclLibPath,
+			    TCL_GLOBAL_ONLY | TCL_APPEND_VALUE);
+		    Tcl_SetVar(interp, "tcl_pkgPath", " ",
+			    TCL_GLOBAL_ONLY | TCL_APPEND_VALUE);
+		}
+		CFRelease(frameworksURL);
+	    }
+	}
+	Tcl_SetVar(interp, "tcl_pkgPath", pkgPath,
+		TCL_GLOBAL_ONLY | TCL_APPEND_VALUE);
+    } else
+#endif /* HAVE_COREFOUNDATION */
+    {
+	Tcl_SetVar(interp, "tcl_pkgPath", pkgPath, TCL_GLOBAL_ONLY);
+    }
+
+#ifdef DJGPP
+    Tcl_SetVar2(interp, "tcl_platform", "platform", "dos", TCL_GLOBAL_ONLY);
+#else
+    Tcl_SetVar2(interp, "tcl_platform", "platform", "unix", TCL_GLOBAL_ONLY);
+#endif
+
+    unameOK = 0;
+#ifdef __CYGWIN__
+	unameOK = 1;
+    if (!osInfoInitialized) {
+	HANDLE handle = GetModuleHandleW(L"NTDLL");
+	int(__stdcall *getversion)(void *) =
+		(int(__stdcall *)(void *))GetProcAddress(handle, "RtlGetVersion");
+	osInfo.dwOSVersionInfoSize = sizeof(OSVERSIONINFOW);
+	if (!getversion || getversion(&osInfo)) {
+	    GetVersionExW(&osInfo);
+	}
+	osInfoInitialized = 1;
+    }
+
+    GetSystemInfo(&sysInfo);
+
+    if (osInfo.dwPlatformId < NUMPLATFORMS) {
+	Tcl_SetVar2(interp, "tcl_platform", "os",
+		platforms[osInfo.dwPlatformId], TCL_GLOBAL_ONLY);
+    }
+    sprintf(buffer, "%d.%d", osInfo.dwMajorVersion, osInfo.dwMinorVersion);
+    Tcl_SetVar2(interp, "tcl_platform", "osVersion", buffer, TCL_GLOBAL_ONLY);
+    if (sysInfo.wProcessorArchitecture < NUMPROCESSORS) {
+	Tcl_SetVar2(interp, "tcl_platform", "machine",
+		processors[sysInfo.wProcessorArchitecture],
+		TCL_GLOBAL_ONLY);
+    }
+
+#elif !defined NO_UNAME
+    if (uname(&name) >= 0) {
+	const char *native;
+
+	unameOK = 1;
+
+	native = Tcl_ExternalToUtfDString(NULL, name.sysname, -1, &ds);
+	Tcl_SetVar2(interp, "tcl_platform", "os", native, TCL_GLOBAL_ONLY);
+	Tcl_DStringFree(&ds);
+
+	/*
+	 * The following code is a special hack to handle differences in the
+	 * way version information is returned by uname. On most systems the
+	 * full version number is available in name.release. However, under
+	 * AIX the major version number is in name.version and the minor
+	 * version number is in name.release.
+	 */
+
+	if ((strchr(name.release, '.') != NULL)
+		|| !isdigit(UCHAR(name.version[0]))) {	/* INTL: digit */
+	    Tcl_SetVar2(interp, "tcl_platform", "osVersion", name.release,
+		    TCL_GLOBAL_ONLY);
+	} else {
+#ifdef DJGPP
+	    /*
+	     * For some obscure reason DJGPP puts major version into
+	     * name.release and minor into name.version. As of DJGPP 2.04 this
+	     * is documented in djgpp libc.info file.
+	     */
+
+	    Tcl_SetVar2(interp, "tcl_platform", "osVersion", name.release,
+		    TCL_GLOBAL_ONLY);
+	    Tcl_SetVar2(interp, "tcl_platform", "osVersion", ".",
+		    TCL_GLOBAL_ONLY|TCL_APPEND_VALUE);
+	    Tcl_SetVar2(interp, "tcl_platform", "osVersion", name.version,
+		    TCL_GLOBAL_ONLY|TCL_APPEND_VALUE);
+#else
+	    Tcl_SetVar2(interp, "tcl_platform", "osVersion", name.version,
+		    TCL_GLOBAL_ONLY);
+	    Tcl_SetVar2(interp, "tcl_platform", "osVersion", ".",
+		    TCL_GLOBAL_ONLY|TCL_APPEND_VALUE);
+	    Tcl_SetVar2(interp, "tcl_platform", "osVersion", name.release,
+		    TCL_GLOBAL_ONLY|TCL_APPEND_VALUE);
+
+#endif /* DJGPP */
+	}
+	Tcl_SetVar2(interp, "tcl_platform", "machine", name.machine,
+		TCL_GLOBAL_ONLY);
+    }
+#endif /* !NO_UNAME */
+    if (!unameOK) {
+	Tcl_SetVar2(interp, "tcl_platform", "os", "", TCL_GLOBAL_ONLY);
+	Tcl_SetVar2(interp, "tcl_platform", "osVersion", "", TCL_GLOBAL_ONLY);
+	Tcl_SetVar2(interp, "tcl_platform", "machine", "", TCL_GLOBAL_ONLY);
+    }
+
+    /*
+     * Copy the username of the real user (according to getuid()) into
+     * tcl_platform(user).
+     */
+
+    {
+	struct passwd *pwEnt = TclpGetPwUid(getuid());
+	const char *user;
+
+	if (pwEnt == NULL) {
+	    user = "";
+	    Tcl_DStringInit(&ds);	/* ensure cleanliness */
+	} else {
+	    user = Tcl_ExternalToUtfDString(NULL, pwEnt->pw_name, -1, &ds);
+	}
+
+	Tcl_SetVar2(interp, "tcl_platform", "user", user, TCL_GLOBAL_ONLY);
+	Tcl_DStringFree(&ds);
+    }
+
+    /*
+     * Define what the platform PATH separator is. [TIP #315]
+     */
+
+    Tcl_SetVar2(interp, "tcl_platform","pathSeparator", ":", TCL_GLOBAL_ONLY);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclpFindVariable --
+ *
+ *	Locate the entry in environ for a given name. On Unix this routine is
+ *	case sensetive, on Windows this matches mixed case.
+ *
+ * Results:
+ *	The return value is the index in environ of an entry with the name
+ *	"name", or -1 if there is no such entry. The integer at *lengthPtr is
+ *	filled in with the length of name (if a matching entry is found) or
+ *	the length of the environ array (if no matching entry is found).
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclpFindVariable(
+    const char *name,		/* Name of desired environment variable
+				 * (native). */
+    int *lengthPtr)		/* Used to return length of name (for
+				 * successful searches) or number of non-NULL
+				 * entries in environ (for unsuccessful
+				 * searches). */
+{
+    int i, result = -1;
+    register const char *env, *p1, *p2;
+    Tcl_DString envString;
+
+    Tcl_DStringInit(&envString);
+    for (i = 0, env = environ[i]; env != NULL; i++, env = environ[i]) {
+	p1 = Tcl_ExternalToUtfDString(NULL, env, -1, &envString);
+	p2 = name;
+
+	for (; *p2 == *p1; p1++, p2++) {
+	    /* NULL loop body. */
+	}
+	if ((*p1 == '=') && (*p2 == '\0')) {
+	    *lengthPtr = p2 - name;
+	    result = i;
+	    goto done;
+	}
+
+	Tcl_DStringFree(&envString);
+    }
+
+    *lengthPtr = i;
+
+  done:
+    Tcl_DStringFree(&envString);
+    return result;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * MacOSXGetLibraryPath --
+ *
+ *	If we have a bundle structure for the Tcl installation, then check
+ *	there first to see if we can find the libraries there.
+ *
+ * Results:
+ *	TCL_OK if we have found the tcl library; TCL_ERROR otherwise.
+ *
+ * Side effects:
+ *	Same as for Tcl_MacOSXOpenVersionedBundleResources.
+ *
+ *----------------------------------------------------------------------
+ */
+
+#ifdef HAVE_COREFOUNDATION
+static int
+MacOSXGetLibraryPath(
+    Tcl_Interp *interp,
+    int maxPathLen,
+    char *tclLibPath)
+{
+    int foundInFramework = TCL_ERROR;
+
+#ifdef TCL_FRAMEWORK
+    foundInFramework = Tcl_MacOSXOpenVersionedBundleResources(interp,
+	    "com.tcltk.tcllibrary", TCL_FRAMEWORK_VERSION, 0, maxPathLen,
+	    tclLibPath);
+#endif
+
+    return foundInFramework;
+}
+#endif /* HAVE_COREFOUNDATION */
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/tcl8.6/unix/tclUnixNotfy.c b/tcl8.6/unix/tclUnixNotfy.c
new file mode 100644
index 0000000..a8dbebe
--- /dev/null
+++ b/tcl8.6/unix/tclUnixNotfy.c
@@ -0,0 +1,1493 @@
+#define AT_FORK_INIT_VALUE 0
+#define RESET_ATFORK_MUTEX 1
+/*
+ * tclUnixNotify.c --
+ *
+ *	This file contains the implementation of the select()-based
+ *	Unix-specific notifier, which is the lowest-level part of the Tcl
+ *	event loop. This file works together with generic/tclNotify.c.
+ *
+ * Copyright (c) 1995-1997 Sun Microsystems, Inc.
+ *
+ * See the file "license.terms" for information on usage and redistribution
+ * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ */
+
+#include "tclInt.h"
+#ifndef HAVE_COREFOUNDATION	/* Darwin/Mac OS X CoreFoundation notifier is
+				 * in tclMacOSXNotify.c */
+#include <signal.h>
+
+/*
+ * This structure is used to keep track of the notifier info for a registered
+ * file.
+ */
+
+typedef struct FileHandler {
+    int fd;
+    int mask;			/* Mask of desired events: TCL_READABLE,
+				 * etc. */
+    int readyMask;		/* Mask of events that have been seen since
+				 * the last time file handlers were invoked
+				 * for this file. */
+    Tcl_FileProc *proc;		/* Function to call, in the style of
+				 * Tcl_CreateFileHandler. */
+    ClientData clientData;	/* Argument to pass to proc. */
+    struct FileHandler *nextPtr;/* Next in list of all files we care about. */
+} FileHandler;
+
+/*
+ * The following structure is what is added to the Tcl event queue when file
+ * handlers are ready to fire.
+ */
+
+typedef struct FileHandlerEvent {
+    Tcl_Event header;		/* Information that is standard for all
+				 * events. */
+    int fd;			/* File descriptor that is ready. Used to find
+				 * the FileHandler structure for the file
+				 * (can't point directly to the FileHandler
+				 * structure because it could go away while
+				 * the event is queued). */
+} FileHandlerEvent;
+
+/*
+ * The following structure contains a set of select() masks to track readable,
+ * writable, and exception conditions.
+ */
+
+typedef struct SelectMasks {
+    fd_set readable;
+    fd_set writable;
+    fd_set exception;
+} SelectMasks;
+
+/*
+ * The following static structure contains the state information for the
+ * select based implementation of the Tcl notifier. One of these structures is
+ * created for each thread that is using the notifier.
+ */
+
+typedef struct ThreadSpecificData {
+    FileHandler *firstFileHandlerPtr;
+				/* Pointer to head of file handler list. */
+    SelectMasks checkMasks;	/* This structure is used to build up the
+				 * masks to be used in the next call to
+				 * select. Bits are set in response to calls
+				 * to Tcl_CreateFileHandler. */
+    SelectMasks readyMasks;	/* This array reflects the readable/writable
+				 * conditions that were found to exist by the
+				 * last call to select. */
+    int numFdBits;		/* Number of valid bits in checkMasks (one
+				 * more than highest fd for which
+				 * Tcl_WatchFile has been called). */
+#ifdef TCL_THREADS
+    int onList;			/* True if it is in this list */
+    unsigned int pollState;	/* pollState is used to implement a polling
+				 * handshake between each thread and the
+				 * notifier thread. Bits defined below. */
+    struct ThreadSpecificData *nextPtr, *prevPtr;
+				/* All threads that are currently waiting on
+				 * an event have their ThreadSpecificData
+				 * structure on a doubly-linked listed formed
+				 * from these pointers. You must hold the
+				 * notifierMutex lock before accessing these
+				 * fields. */
+#ifdef __CYGWIN__
+    void *event;     /* Any other thread alerts a notifier
+	 * that an event is ready to be processed
+	 * by sending this event. */
+    void *hwnd;			/* Messaging window. */
+#else /* !__CYGWIN__ */
+    pthread_cond_t waitCV;	/* Any other thread alerts a notifier that an
+				 * event is ready to be processed by signaling
+				 * this condition variable. */
+#endif /* __CYGWIN__ */
+    int waitCVinitialized;	/* Variable to flag initialization of the structure */
+    int eventReady;		/* True if an event is ready to be processed.
+				 * Used as condition flag together with waitCV
+				 * above. */
+#endif /* TCL_THREADS */
+} ThreadSpecificData;
+
+static Tcl_ThreadDataKey dataKey;
+
+#ifdef TCL_THREADS
+/*
+ * The following static indicates the number of threads that have initialized
+ * notifiers.
+ *
+ * You must hold the notifierMutex lock before accessing this variable.
+ */
+
+static int notifierCount = 0;
+
+/*
+ * The following variable points to the head of a doubly-linked list of
+ * ThreadSpecificData structures for all threads that are currently waiting on
+ * an event.
+ *
+ * You must hold the notifierMutex lock before accessing this list.
+ */
+
+static ThreadSpecificData *waitingListPtr = NULL;
+
+/*
+ * The notifier thread spends all its time in select() waiting for a file
+ * descriptor associated with one of the threads on the waitingListPtr list to
+ * do something interesting. But if the contents of the waitingListPtr list
+ * ever changes, we need to wake up and restart the select() system call. You
+ * can wake up the notifier thread by writing a single byte to the file
+ * descriptor defined below. This file descriptor is the input-end of a pipe
+ * and the notifier thread is listening for data on the output-end of the same
+ * pipe. Hence writing to this file descriptor will cause the select() system
+ * call to return and wake up the notifier thread.
+ *
+ * You must hold the notifierMutex lock before writing to the pipe.
+ */
+
+static int triggerPipe = -1;
+
+/*
+ * The notifierMutex locks access to all of the global notifier state.
+ */
+
+static pthread_mutex_t notifierInitMutex = PTHREAD_MUTEX_INITIALIZER;
+static pthread_mutex_t notifierMutex     = PTHREAD_MUTEX_INITIALIZER;
+/*
+ * The following static indicates if the notifier thread is running.
+ *
+ * You must hold the notifierInitMutex before accessing this variable.
+ */
+
+static int notifierThreadRunning = 0;
+
+/*
+ * The notifier thread signals the notifierCV when it has finished
+ * initializing the triggerPipe and right before the notifier thread
+ * terminates.
+ */
+
+static pthread_cond_t notifierCV = PTHREAD_COND_INITIALIZER;
+
+/*
+ * The pollState bits
+ *	POLL_WANT is set by each thread before it waits on its condition
+ *		variable. It is checked by the notifier before it does select.
+ *	POLL_DONE is set by the notifier if it goes into select after seeing
+ *		POLL_WANT. The idea is to ensure it tries a select with the
+ *		same bits the initial thread had set.
+ */
+
+#define POLL_WANT	0x1
+#define POLL_DONE	0x2
+
+/*
+ * This is the thread ID of the notifier thread that does select.
+ */
+
+static Tcl_ThreadId notifierThread;
+
+#endif /* TCL_THREADS */
+
+/*
+ * Static routines defined in this file.
+ */
+
+#ifdef TCL_THREADS
+static void	NotifierThreadProc(ClientData clientData);
+#if defined(HAVE_PTHREAD_ATFORK)
+static int	atForkInit = AT_FORK_INIT_VALUE;
+static void	AtForkPrepare(void);
+static void	AtForkParent(void);
+static void	AtForkChild(void);
+#endif /* HAVE_PTHREAD_ATFORK */
+#endif /* TCL_THREADS */
+static int	FileHandlerEventProc(Tcl_Event *evPtr, int flags);
+
+/*
+ * Import of Windows API when building threaded with Cygwin.
+ */
+
+#if defined(TCL_THREADS) && defined(__CYGWIN__)
+typedef struct {
+    void *hwnd;
+    unsigned int *message;
+    int wParam;
+    int lParam;
+    int time;
+    int x;
+    int y;
+} MSG;
+
+typedef struct {
+    unsigned int style;
+    void *lpfnWndProc;
+    int cbClsExtra;
+    int cbWndExtra;
+    void *hInstance;
+    void *hIcon;
+    void *hCursor;
+    void *hbrBackground;
+    void *lpszMenuName;
+    const void *lpszClassName;
+} WNDCLASS;
+
+extern void __stdcall	CloseHandle(void *);
+extern void *__stdcall	CreateEventW(void *, unsigned char, unsigned char,
+			    void *);
+extern void * __stdcall	CreateWindowExW(void *, const void *, const void *,
+			    DWORD, int, int, int, int, void *, void *, void *, void *);
+extern DWORD __stdcall	DefWindowProcW(void *, int, void *, void *);
+extern unsigned char __stdcall	DestroyWindow(void *);
+extern int __stdcall	DispatchMessageW(const MSG *);
+extern unsigned char __stdcall	GetMessageW(MSG *, void *, int, int);
+extern void __stdcall	MsgWaitForMultipleObjects(DWORD, void *,
+			    unsigned char, DWORD, DWORD);
+extern unsigned char __stdcall	PeekMessageW(MSG *, void *, int, int, int);
+extern unsigned char __stdcall	PostMessageW(void *, unsigned int, void *,
+				    void *);
+extern void __stdcall	PostQuitMessage(int);
+extern void *__stdcall	RegisterClassW(const WNDCLASS *);
+extern unsigned char __stdcall	ResetEvent(void *);
+extern unsigned char __stdcall	TranslateMessage(const MSG *);
+
+/*
+ * Threaded-cygwin specific constants and functions in this file:
+ */
+
+static const WCHAR NotfyClassName[] = L"TclNotifier";
+static DWORD __stdcall	NotifierProc(void *hwnd, unsigned int message,
+			    void *wParam, void *lParam);
+#endif /* TCL_THREADS && __CYGWIN__ */
+
+#if TCL_THREADS
+/*
+ *----------------------------------------------------------------------
+ *
+ * StartNotifierThread --
+ *
+ *	Start a notfier thread and wait for the notifier pipe to be created.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Running Thread.
+ *
+ *----------------------------------------------------------------------
+ */
+static void
+StartNotifierThread(const char *proc)
+{
+    if (!notifierThreadRunning) {
+	pthread_mutex_lock(&notifierInitMutex);
+	if (!notifierThreadRunning) {
+	    if (TclpThreadCreate(&notifierThread, NotifierThreadProc, NULL,
+		    TCL_THREAD_STACK_DEFAULT, TCL_THREAD_JOINABLE) != TCL_OK) {
+		Tcl_Panic("%s: unable to start notifier thread", proc);
+	    }
+
+	    pthread_mutex_lock(&notifierMutex);
+	    /*
+	     * Wait for the notifier pipe to be created.
+	     */
+
+	    while (triggerPipe < 0) {
+		pthread_cond_wait(&notifierCV, &notifierMutex);
+	    }
+	    pthread_mutex_unlock(&notifierMutex);
+
+	    notifierThreadRunning = 1;
+	}
+	pthread_mutex_unlock(&notifierInitMutex);
+    }
+}
+#endif /* TCL_THREADS */
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_InitNotifier --
+ *
+ *	Initializes the platform specific notifier state.
+ *
+ * Results:
+ *	Returns a handle to the notifier state for this thread.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+ClientData
+Tcl_InitNotifier(void)
+{
+    if (tclNotifierHooks.initNotifierProc) {
+	return tclNotifierHooks.initNotifierProc();
+    } else {
+	ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
+
+#ifdef TCL_THREADS
+	tsdPtr->eventReady = 0;
+
+	/*
+	 * Initialize thread specific condition variable for this thread.
+	 */
+	if (tsdPtr->waitCVinitialized == 0) {
+#ifdef __CYGWIN__
+	    WNDCLASS class;
+
+	    class.style = 0;
+	    class.cbClsExtra = 0;
+	    class.cbWndExtra = 0;
+	    class.hInstance = TclWinGetTclInstance();
+	    class.hbrBackground = NULL;
+	    class.lpszMenuName = NULL;
+	    class.lpszClassName = NotfyClassName;
+	    class.lpfnWndProc = NotifierProc;
+	    class.hIcon = NULL;
+	    class.hCursor = NULL;
+
+	    RegisterClassW(&class);
+	    tsdPtr->hwnd = CreateWindowExW(NULL, class.lpszClassName,
+		    class.lpszClassName, 0, 0, 0, 0, 0, NULL, NULL,
+		    TclWinGetTclInstance(), NULL);
+	    tsdPtr->event = CreateEventW(NULL, 1 /* manual */,
+		    0 /* !signaled */, NULL);
+#else
+	    pthread_cond_init(&tsdPtr->waitCV, NULL);
+#endif /* __CYGWIN__ */
+	    tsdPtr->waitCVinitialized = 1;
+	}
+
+	pthread_mutex_lock(&notifierInitMutex);
+#if defined(HAVE_PTHREAD_ATFORK)
+	/*
+	 * Install pthread_atfork handlers to clean up the notifier in the
+	 * child of a fork.
+	 */
+
+	if (!atForkInit) {
+	    int result = pthread_atfork(AtForkPrepare, AtForkParent, AtForkChild);
+
+	    if (result) {
+		Tcl_Panic("Tcl_InitNotifier: pthread_atfork failed");
+	    }
+	    atForkInit = 1;
+	}
+#endif /* HAVE_PTHREAD_ATFORK */
+
+	notifierCount++;
+
+	pthread_mutex_unlock(&notifierInitMutex);
+
+#endif /* TCL_THREADS */
+	return tsdPtr;
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_FinalizeNotifier --
+ *
+ *	This function is called to cleanup the notifier state before a thread
+ *	is terminated.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	May terminate the background notifier thread if this is the last
+ *	notifier instance.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+Tcl_FinalizeNotifier(
+    ClientData clientData)		/* Not used. */
+{
+    if (tclNotifierHooks.finalizeNotifierProc) {
+	tclNotifierHooks.finalizeNotifierProc(clientData);
+	return;
+    } else {
+#ifdef TCL_THREADS
+	ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
+
+	pthread_mutex_lock(&notifierInitMutex);
+	notifierCount--;
+
+	/*
+	 * If this is the last thread to use the notifier, close the notifier
+	 * pipe and wait for the background thread to terminate.
+	 */
+
+	if (notifierCount == 0) {
+
+	    if (triggerPipe != -1) {
+		if (write(triggerPipe, "q", 1) != 1) {
+		    Tcl_Panic("Tcl_FinalizeNotifier: %s",
+			    "unable to write q to triggerPipe");
+		}
+		close(triggerPipe);
+		pthread_mutex_lock(&notifierMutex);
+		while(triggerPipe != -1) {
+		    pthread_cond_wait(&notifierCV, &notifierMutex);
+		}
+		pthread_mutex_unlock(&notifierMutex);
+		if (notifierThreadRunning) {
+		    int result = pthread_join((pthread_t) notifierThread, NULL);
+
+		    if (result) {
+			Tcl_Panic("Tcl_FinalizeNotifier: unable to join notifier "
+				"thread");
+		    }
+		    notifierThreadRunning = 0;
+		}
+	    }
+	}
+
+	/*
+	 * Clean up any synchronization objects in the thread local storage.
+	 */
+
+#ifdef __CYGWIN__
+	DestroyWindow(tsdPtr->hwnd);
+	CloseHandle(tsdPtr->event);
+#else /* __CYGWIN__ */
+	pthread_cond_destroy(&tsdPtr->waitCV);
+#endif /* __CYGWIN__ */
+	tsdPtr->waitCVinitialized = 0;
+
+	pthread_mutex_unlock(&notifierInitMutex);
+#endif /* TCL_THREADS */
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_AlertNotifier --
+ *
+ *	Wake up the specified notifier from any thread. This routine is called
+ *	by the platform independent notifier code whenever the Tcl_ThreadAlert
+ *	routine is called. This routine is guaranteed not to be called on a
+ *	given notifier after Tcl_FinalizeNotifier is called for that notifier.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Signals the notifier condition variable for the specified notifier.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+Tcl_AlertNotifier(
+    ClientData clientData)
+{
+    if (tclNotifierHooks.alertNotifierProc) {
+	tclNotifierHooks.alertNotifierProc(clientData);
+	return;
+    } else {
+#ifdef TCL_THREADS
+	ThreadSpecificData *tsdPtr = clientData;
+
+	pthread_mutex_lock(&notifierMutex);
+	tsdPtr->eventReady = 1;
+
+#   ifdef __CYGWIN__
+	PostMessageW(tsdPtr->hwnd, 1024, 0, 0);
+#   else
+	pthread_cond_broadcast(&tsdPtr->waitCV);
+#   endif /* __CYGWIN__ */
+	pthread_mutex_unlock(&notifierMutex);
+#endif /* TCL_THREADS */
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_SetTimer --
+ *
+ *	This function sets the current notifier timer value. This interface is
+ *	not implemented in this notifier because we are always running inside
+ *	of Tcl_DoOneEvent.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+Tcl_SetTimer(
+    const Tcl_Time *timePtr)		/* Timeout value, may be NULL. */
+{
+    if (tclNotifierHooks.setTimerProc) {
+	tclNotifierHooks.setTimerProc(timePtr);
+	return;
+    } else {
+	/*
+	 * The interval timer doesn't do anything in this implementation,
+	 * because the only event loop is via Tcl_DoOneEvent, which passes
+	 * timeout values to Tcl_WaitForEvent.
+	 */
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_ServiceModeHook --
+ *
+ *	This function is invoked whenever the service mode changes.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+Tcl_ServiceModeHook(
+    int mode)			/* Either TCL_SERVICE_ALL, or
+				 * TCL_SERVICE_NONE. */
+{
+    if (tclNotifierHooks.serviceModeHookProc) {
+	tclNotifierHooks.serviceModeHookProc(mode);
+	return;
+    } else if (mode == TCL_SERVICE_ALL) {
+#if TCL_THREADS
+	StartNotifierThread("Tcl_ServiceModeHook");
+#endif
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_CreateFileHandler --
+ *
+ *	This function registers a file handler with the select notifier.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Creates a new file handler structure.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+Tcl_CreateFileHandler(
+    int fd,			/* Handle of stream to watch. */
+    int mask,			/* OR'ed combination of TCL_READABLE,
+				 * TCL_WRITABLE, and TCL_EXCEPTION: indicates
+				 * conditions under which proc should be
+				 * called. */
+    Tcl_FileProc *proc,		/* Function to call for each selected
+				 * event. */
+    ClientData clientData)	/* Arbitrary data to pass to proc. */
+{
+    if (tclNotifierHooks.createFileHandlerProc) {
+	tclNotifierHooks.createFileHandlerProc(fd, mask, proc, clientData);
+	return;
+    } else {
+	ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
+	FileHandler *filePtr;
+
+	for (filePtr = tsdPtr->firstFileHandlerPtr; filePtr != NULL;
+		filePtr = filePtr->nextPtr) {
+	    if (filePtr->fd == fd) {
+		break;
+	    }
+	}
+	if (filePtr == NULL) {
+	    filePtr = ckalloc(sizeof(FileHandler));
+	    filePtr->fd = fd;
+	    filePtr->readyMask = 0;
+	    filePtr->nextPtr = tsdPtr->firstFileHandlerPtr;
+	    tsdPtr->firstFileHandlerPtr = filePtr;
+	}
+	filePtr->proc = proc;
+	filePtr->clientData = clientData;
+	filePtr->mask = mask;
+
+	/*
+	 * Update the check masks for this file.
+	 */
+
+	if (mask & TCL_READABLE) {
+	    FD_SET(fd, &tsdPtr->checkMasks.readable);
+	} else {
+	    FD_CLR(fd, &tsdPtr->checkMasks.readable);
+	}
+	if (mask & TCL_WRITABLE) {
+	    FD_SET(fd, &tsdPtr->checkMasks.writable);
+	} else {
+	    FD_CLR(fd, &tsdPtr->checkMasks.writable);
+	}
+	if (mask & TCL_EXCEPTION) {
+	    FD_SET(fd, &tsdPtr->checkMasks.exception);
+	} else {
+	    FD_CLR(fd, &tsdPtr->checkMasks.exception);
+	}
+	if (tsdPtr->numFdBits <= fd) {
+	    tsdPtr->numFdBits = fd+1;
+	}
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_DeleteFileHandler --
+ *
+ *	Cancel a previously-arranged callback arrangement for a file.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	If a callback was previously registered on file, remove it.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+Tcl_DeleteFileHandler(
+    int fd)			/* Stream id for which to remove callback
+				 * function. */
+{
+    if (tclNotifierHooks.deleteFileHandlerProc) {
+	tclNotifierHooks.deleteFileHandlerProc(fd);
+	return;
+    } else {
+	FileHandler *filePtr, *prevPtr;
+	int i;
+	ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
+
+	/*
+	 * Find the entry for the given file (and return if there isn't one).
+	 */
+
+	for (prevPtr = NULL, filePtr = tsdPtr->firstFileHandlerPtr; ;
+		prevPtr = filePtr, filePtr = filePtr->nextPtr) {
+	    if (filePtr == NULL) {
+		return;
+	    }
+	    if (filePtr->fd == fd) {
+		break;
+	    }
+	}
+
+	/*
+	 * Update the check masks for this file.
+	 */
+
+	if (filePtr->mask & TCL_READABLE) {
+	    FD_CLR(fd, &tsdPtr->checkMasks.readable);
+	}
+	if (filePtr->mask & TCL_WRITABLE) {
+	    FD_CLR(fd, &tsdPtr->checkMasks.writable);
+	}
+	if (filePtr->mask & TCL_EXCEPTION) {
+	    FD_CLR(fd, &tsdPtr->checkMasks.exception);
+	}
+
+	/*
+	 * Find current max fd.
+	 */
+
+	if (fd+1 == tsdPtr->numFdBits) {
+	    int numFdBits = 0;
+
+	    for (i = fd-1; i >= 0; i--) {
+		if (FD_ISSET(i, &tsdPtr->checkMasks.readable)
+			|| FD_ISSET(i, &tsdPtr->checkMasks.writable)
+			|| FD_ISSET(i, &tsdPtr->checkMasks.exception)) {
+		    numFdBits = i+1;
+		    break;
+		}
+	    }
+	    tsdPtr->numFdBits = numFdBits;
+	}
+
+	/*
+	 * Clean up information in the callback record.
+	 */
+
+	if (prevPtr == NULL) {
+	    tsdPtr->firstFileHandlerPtr = filePtr->nextPtr;
+	} else {
+	    prevPtr->nextPtr = filePtr->nextPtr;
+	}
+	ckfree(filePtr);
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * FileHandlerEventProc --
+ *
+ *	This function is called by Tcl_ServiceEvent when a file event reaches
+ *	the front of the event queue. This function is responsible for
+ *	actually handling the event by invoking the callback for the file
+ *	handler.
+ *
+ * Results:
+ *	Returns 1 if the event was handled, meaning it should be removed from
+ *	the queue. Returns 0 if the event was not handled, meaning it should
+ *	stay on the queue. The only time the event isn't handled is if the
+ *	TCL_FILE_EVENTS flag bit isn't set.
+ *
+ * Side effects:
+ *	Whatever the file handler's callback function does.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+FileHandlerEventProc(
+    Tcl_Event *evPtr,		/* Event to service. */
+    int flags)			/* Flags that indicate what events to handle,
+				 * such as TCL_FILE_EVENTS. */
+{
+    int mask;
+    FileHandler *filePtr;
+    FileHandlerEvent *fileEvPtr = (FileHandlerEvent *) evPtr;
+    ThreadSpecificData *tsdPtr;
+
+    if (!(flags & TCL_FILE_EVENTS)) {
+	return 0;
+    }
+
+    /*
+     * Search through the file handlers to find the one whose handle matches
+     * the event. We do this rather than keeping a pointer to the file handler
+     * directly in the event, so that the handler can be deleted while the
+     * event is queued without leaving a dangling pointer.
+     */
+
+    tsdPtr = TCL_TSD_INIT(&dataKey);
+
+    for (filePtr = tsdPtr->firstFileHandlerPtr; filePtr != NULL;
+	    filePtr = filePtr->nextPtr) {
+	if (filePtr->fd != fileEvPtr->fd) {
+	    continue;
+	}
+
+	/*
+	 * The code is tricky for two reasons:
+	 * 1. The file handler's desired events could have changed since the
+	 *    time when the event was queued, so AND the ready mask with the
+	 *    desired mask.
+	 * 2. The file could have been closed and re-opened since the time
+	 *    when the event was queued. This is why the ready mask is stored
+	 *    in the file handler rather than the queued event: it will be
+	 *    zeroed when a new file handler is created for the newly opened
+	 *    file.
+	 */
+
+	mask = filePtr->readyMask & filePtr->mask;
+	filePtr->readyMask = 0;
+	if (mask != 0) {
+	    filePtr->proc(filePtr->clientData, mask);
+	}
+	break;
+    }
+    return 1;
+}
+
+#if defined(TCL_THREADS) && defined(__CYGWIN__)
+
+static DWORD __stdcall
+NotifierProc(
+    void *hwnd,
+    unsigned int message,
+    void *wParam,
+    void *lParam)
+{
+    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
+
+    if (message != 1024) {
+	return DefWindowProcW(hwnd, message, wParam, lParam);
+    }
+
+    /*
+     * Process all of the runnable events.
+     */
+
+    tsdPtr->eventReady = 1;
+    Tcl_ServiceAll();
+    return 0;
+}
+#endif /* TCL_THREADS && __CYGWIN__ */
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_WaitForEvent --
+ *
+ *	This function is called by Tcl_DoOneEvent to wait for new events on
+ *	the message queue. If the block time is 0, then Tcl_WaitForEvent just
+ *	polls without blocking.
+ *
+ * Results:
+ *	Returns -1 if the select would block forever, otherwise returns 0.
+ *
+ * Side effects:
+ *	Queues file events that are detected by the select.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+Tcl_WaitForEvent(
+    const Tcl_Time *timePtr)		/* Maximum block time, or NULL. */
+{
+    if (tclNotifierHooks.waitForEventProc) {
+	return tclNotifierHooks.waitForEventProc(timePtr);
+    } else {
+	FileHandler *filePtr;
+	int mask;
+	Tcl_Time vTime;
+#ifdef TCL_THREADS
+	int waitForFiles;
+#   ifdef __CYGWIN__
+	MSG msg;
+#   endif /* __CYGWIN__ */
+#else
+	/*
+	 * Impl. notes: timeout & timeoutPtr are used if, and only if threads
+	 * are not enabled. They are the arguments for the regular select()
+	 * used when the core is not thread-enabled.
+	 */
+
+	struct timeval timeout, *timeoutPtr;
+	int numFound;
+#endif /* TCL_THREADS */
+	ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
+
+	/*
+	 * Set up the timeout structure. Note that if there are no events to
+	 * check for, we return with a negative result rather than blocking
+	 * forever.
+	 */
+
+	if (timePtr != NULL) {
+	    /*
+	     * TIP #233 (Virtualized Time). Is virtual time in effect? And do
+	     * we actually have something to scale? If yes to both then we
+	     * call the handler to do this scaling.
+	     */
+
+	    if (timePtr->sec != 0 || timePtr->usec != 0) {
+		vTime = *timePtr;
+		tclScaleTimeProcPtr(&vTime, tclTimeClientData);
+		timePtr = &vTime;
+	    }
+#ifndef TCL_THREADS
+	    timeout.tv_sec = timePtr->sec;
+	    timeout.tv_usec = timePtr->usec;
+	    timeoutPtr = &timeout;
+	} else if (tsdPtr->numFdBits == 0) {
+	    /*
+	     * If there are no threads, no timeout, and no fds registered,
+	     * then there are no events possible and we must avoid deadlock.
+	     * Note that this is not entirely correct because there might be a
+	     * signal that could interrupt the select call, but we don't
+	     * handle that case if we aren't using threads.
+	     */
+
+	    return -1;
+	} else {
+	    timeoutPtr = NULL;
+#endif /* !TCL_THREADS */
+	}
+
+#ifdef TCL_THREADS
+	/*
+	 * Start notifier thread and place this thread on the list of
+	 * interested threads, signal the notifier thread, and wait for a
+	 * response or a timeout.
+	 */
+	StartNotifierThread("Tcl_WaitForEvent");
+
+	pthread_mutex_lock(&notifierMutex);
+
+	if (timePtr != NULL && timePtr->sec == 0 && (timePtr->usec == 0
+#if defined(__APPLE__) && defined(__LP64__)
+		/*
+		 * On 64-bit Darwin, pthread_cond_timedwait() appears to have
+		 * a bug that causes it to wait forever when passed an
+		 * absolute time which has already been exceeded by the system
+		 * time; as a workaround, when given a very brief timeout,
+		 * just do a poll. [Bug 1457797]
+		 */
+		|| timePtr->usec < 10
+#endif /* __APPLE__ && __LP64__ */
+		)) {
+	    /*
+	     * Cannot emulate a polling select with a polling condition
+	     * variable. Instead, pretend to wait for files and tell the
+	     * notifier thread what we are doing. The notifier thread makes
+	     * sure it goes through select with its select mask in the same
+	     * state as ours currently is. We block until that happens.
+	     */
+
+	    waitForFiles = 1;
+	    tsdPtr->pollState = POLL_WANT;
+	    timePtr = NULL;
+	} else {
+	    waitForFiles = (tsdPtr->numFdBits > 0);
+	    tsdPtr->pollState = 0;
+	}
+
+	if (waitForFiles) {
+	    /*
+	     * Add the ThreadSpecificData structure of this thread to the list
+	     * of ThreadSpecificData structures of all threads that are
+	     * waiting on file events.
+	     */
+
+	    tsdPtr->nextPtr = waitingListPtr;
+	    if (waitingListPtr) {
+		waitingListPtr->prevPtr = tsdPtr;
+	    }
+	    tsdPtr->prevPtr = 0;
+	    waitingListPtr = tsdPtr;
+	    tsdPtr->onList = 1;
+
+	    if ((write(triggerPipe, "", 1) == -1) && (errno != EAGAIN)) {
+		Tcl_Panic("Tcl_WaitForEvent: %s",
+			"unable to write to triggerPipe");
+	    }
+	}
+
+	FD_ZERO(&tsdPtr->readyMasks.readable);
+	FD_ZERO(&tsdPtr->readyMasks.writable);
+	FD_ZERO(&tsdPtr->readyMasks.exception);
+
+	if (!tsdPtr->eventReady) {
+#ifdef __CYGWIN__
+	    if (!PeekMessageW(&msg, NULL, 0, 0, 0)) {
+		DWORD timeout;
+
+		if (timePtr) {
+		    timeout = timePtr->sec * 1000 + timePtr->usec / 1000;
+		} else {
+		    timeout = 0xFFFFFFFF;
+		}
+		pthread_mutex_unlock(&notifierMutex);
+		MsgWaitForMultipleObjects(1, &tsdPtr->event, 0, timeout, 1279);
+		pthread_mutex_lock(&notifierMutex);
+	    }
+#else
+	    if (timePtr != NULL) {
+	       Tcl_Time now;
+	       struct timespec ptime;
+
+	       Tcl_GetTime(&now);
+	       ptime.tv_sec = timePtr->sec + now.sec + (timePtr->usec + now.usec) / 1000000;
+	       ptime.tv_nsec = 1000 * ((timePtr->usec + now.usec) % 1000000);
+
+	       pthread_cond_timedwait(&tsdPtr->waitCV, &notifierMutex, &ptime);
+	    } else {
+	       pthread_cond_wait(&tsdPtr->waitCV, &notifierMutex);
+	    }
+#endif /* __CYGWIN__ */
+	}
+	tsdPtr->eventReady = 0;
+
+#ifdef __CYGWIN__
+	while (PeekMessageW(&msg, NULL, 0, 0, 0)) {
+	    /*
+	     * Retrieve and dispatch the message.
+	     */
+
+	    DWORD result = GetMessageW(&msg, NULL, 0, 0);
+
+	    if (result == 0) {
+		PostQuitMessage(msg.wParam);
+		/* What to do here? */
+	    } else if (result != (DWORD) -1) {
+		TranslateMessage(&msg);
+		DispatchMessageW(&msg);
+	    }
+	}
+	ResetEvent(tsdPtr->event);
+#endif /* __CYGWIN__ */
+
+	if (waitForFiles && tsdPtr->onList) {
+	    /*
+	     * Remove the ThreadSpecificData structure of this thread from the
+	     * waiting list. Alert the notifier thread to recompute its select
+	     * masks - skipping this caused a hang when trying to close a pipe
+	     * which the notifier thread was still doing a select on.
+	     */
+
+	    if (tsdPtr->prevPtr) {
+		tsdPtr->prevPtr->nextPtr = tsdPtr->nextPtr;
+	    } else {
+		waitingListPtr = tsdPtr->nextPtr;
+	    }
+	    if (tsdPtr->nextPtr) {
+		tsdPtr->nextPtr->prevPtr = tsdPtr->prevPtr;
+	    }
+	    tsdPtr->nextPtr = tsdPtr->prevPtr = NULL;
+	    tsdPtr->onList = 0;
+	    if ((write(triggerPipe, "", 1) == -1) && (errno != EAGAIN)) {
+		Tcl_Panic("Tcl_WaitForEvent: %s",
+			"unable to write to triggerPipe");
+	    }
+	}
+
+#else
+	tsdPtr->readyMasks = tsdPtr->checkMasks;
+	numFound = select(tsdPtr->numFdBits, &tsdPtr->readyMasks.readable,
+		&tsdPtr->readyMasks.writable, &tsdPtr->readyMasks.exception,
+		timeoutPtr);
+
+	/*
+	 * Some systems don't clear the masks after an error, so we have to do
+	 * it here.
+	 */
+
+	if (numFound == -1) {
+	    FD_ZERO(&tsdPtr->readyMasks.readable);
+	    FD_ZERO(&tsdPtr->readyMasks.writable);
+	    FD_ZERO(&tsdPtr->readyMasks.exception);
+	}
+#endif /* TCL_THREADS */
+
+	/*
+	 * Queue all detected file events before returning.
+	 */
+
+	for (filePtr = tsdPtr->firstFileHandlerPtr; (filePtr != NULL);
+		filePtr = filePtr->nextPtr) {
+	    mask = 0;
+	    if (FD_ISSET(filePtr->fd, &tsdPtr->readyMasks.readable)) {
+		mask |= TCL_READABLE;
+	    }
+	    if (FD_ISSET(filePtr->fd, &tsdPtr->readyMasks.writable)) {
+		mask |= TCL_WRITABLE;
+	    }
+	    if (FD_ISSET(filePtr->fd, &tsdPtr->readyMasks.exception)) {
+		mask |= TCL_EXCEPTION;
+	    }
+
+	    if (!mask) {
+		continue;
+	    }
+
+	    /*
+	     * Don't bother to queue an event if the mask was previously
+	     * non-zero since an event must still be on the queue.
+	     */
+
+	    if (filePtr->readyMask == 0) {
+		FileHandlerEvent *fileEvPtr =
+			ckalloc(sizeof(FileHandlerEvent));
+
+		fileEvPtr->header.proc = FileHandlerEventProc;
+		fileEvPtr->fd = filePtr->fd;
+		Tcl_QueueEvent((Tcl_Event *) fileEvPtr, TCL_QUEUE_TAIL);
+	    }
+	    filePtr->readyMask = mask;
+	}
+#ifdef TCL_THREADS
+	pthread_mutex_unlock(&notifierMutex);
+#endif /* TCL_THREADS */
+	return 0;
+    }
+}
+
+#ifdef TCL_THREADS
+/*
+ *----------------------------------------------------------------------
+ *
+ * NotifierThreadProc --
+ *
+ *	This routine is the initial (and only) function executed by the
+ *	special notifier thread. Its job is to wait for file descriptors to
+ *	become readable or writable or to have an exception condition and then
+ *	to notify other threads who are interested in this information by
+ *	signalling a condition variable. Other threads can signal this
+ *	notifier thread of a change in their interests by writing a single
+ *	byte to a special pipe that the notifier thread is monitoring.
+ *
+ * Result:
+ *	None. Once started, this routine never exits. It dies with the overall
+ *	process.
+ *
+ * Side effects:
+ *	The trigger pipe used to signal the notifier thread is created when
+ *	the notifier thread first starts.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+NotifierThreadProc(
+    ClientData clientData)	/* Not used. */
+{
+    ThreadSpecificData *tsdPtr;
+    fd_set readableMask;
+    fd_set writableMask;
+    fd_set exceptionMask;
+    int fds[2];
+    int i, numFdBits = 0, receivePipe;
+    long found;
+    struct timeval poll = {0., 0.}, *timePtr;
+    char buf[2];
+
+    if (pipe(fds) != 0) {
+	Tcl_Panic("NotifierThreadProc: %s", "could not create trigger pipe");
+    }
+
+    receivePipe = fds[0];
+
+    if (TclUnixSetBlockingMode(receivePipe, TCL_MODE_NONBLOCKING) < 0) {
+	Tcl_Panic("NotifierThreadProc: %s",
+		"could not make receive pipe non blocking");
+    }
+    if (TclUnixSetBlockingMode(fds[1], TCL_MODE_NONBLOCKING) < 0) {
+	Tcl_Panic("NotifierThreadProc: %s",
+		"could not make trigger pipe non blocking");
+    }
+    if (fcntl(receivePipe, F_SETFD, FD_CLOEXEC) < 0) {
+	Tcl_Panic("NotifierThreadProc: %s",
+		"could not make receive pipe close-on-exec");
+    }
+    if (fcntl(fds[1], F_SETFD, FD_CLOEXEC) < 0) {
+	Tcl_Panic("NotifierThreadProc: %s",
+		"could not make trigger pipe close-on-exec");
+    }
+
+    /*
+     * Install the write end of the pipe into the global variable.
+     */
+
+    pthread_mutex_lock(&notifierMutex);
+    triggerPipe = fds[1];
+
+    /*
+     * Signal any threads that are waiting.
+     */
+
+    pthread_cond_broadcast(&notifierCV);
+    pthread_mutex_unlock(&notifierMutex);
+
+    /*
+     * Look for file events and report them to interested threads.
+     */
+
+    while (1) {
+	FD_ZERO(&readableMask);
+	FD_ZERO(&writableMask);
+	FD_ZERO(&exceptionMask);
+
+	/*
+	 * Compute the logical OR of the select masks from all the waiting
+	 * notifiers.
+	 */
+
+	pthread_mutex_lock(&notifierMutex);
+	timePtr = NULL;
+	for (tsdPtr = waitingListPtr; tsdPtr; tsdPtr = tsdPtr->nextPtr) {
+	    for (i = tsdPtr->numFdBits-1; i >= 0; --i) {
+		if (FD_ISSET(i, &tsdPtr->checkMasks.readable)) {
+		    FD_SET(i, &readableMask);
+		}
+		if (FD_ISSET(i, &tsdPtr->checkMasks.writable)) {
+		    FD_SET(i, &writableMask);
+		}
+		if (FD_ISSET(i, &tsdPtr->checkMasks.exception)) {
+		    FD_SET(i, &exceptionMask);
+		}
+	    }
+	    if (tsdPtr->numFdBits > numFdBits) {
+		numFdBits = tsdPtr->numFdBits;
+	    }
+	    if (tsdPtr->pollState & POLL_WANT) {
+		/*
+		 * Here we make sure we go through select() with the same mask
+		 * bits that were present when the thread tried to poll.
+		 */
+
+		tsdPtr->pollState |= POLL_DONE;
+		timePtr = &poll;
+	    }
+	}
+	pthread_mutex_unlock(&notifierMutex);
+
+	/*
+	 * Set up the select mask to include the receive pipe.
+	 */
+
+	if (receivePipe >= numFdBits) {
+	    numFdBits = receivePipe + 1;
+	}
+	FD_SET(receivePipe, &readableMask);
+
+	if (select(numFdBits, &readableMask, &writableMask, &exceptionMask,
+		timePtr) == -1) {
+	    /*
+	     * Try again immediately on an error.
+	     */
+
+	    continue;
+	}
+
+	/*
+	 * Alert any threads that are waiting on a ready file descriptor.
+	 */
+
+	pthread_mutex_lock(&notifierMutex);
+	for (tsdPtr = waitingListPtr; tsdPtr; tsdPtr = tsdPtr->nextPtr) {
+	    found = 0;
+
+	    for (i = tsdPtr->numFdBits-1; i >= 0; --i) {
+		if (FD_ISSET(i, &tsdPtr->checkMasks.readable)
+			&& FD_ISSET(i, &readableMask)) {
+		    FD_SET(i, &tsdPtr->readyMasks.readable);
+		    found = 1;
+		}
+		if (FD_ISSET(i, &tsdPtr->checkMasks.writable)
+			&& FD_ISSET(i, &writableMask)) {
+		    FD_SET(i, &tsdPtr->readyMasks.writable);
+		    found = 1;
+		}
+		if (FD_ISSET(i, &tsdPtr->checkMasks.exception)
+			&& FD_ISSET(i, &exceptionMask)) {
+		    FD_SET(i, &tsdPtr->readyMasks.exception);
+		    found = 1;
+		}
+	    }
+
+	    if (found || (tsdPtr->pollState & POLL_DONE)) {
+		tsdPtr->eventReady = 1;
+		if (tsdPtr->onList) {
+		    /*
+		     * Remove the ThreadSpecificData structure of this thread
+		     * from the waiting list. This prevents us from
+		     * continuously spining on select until the other threads
+		     * runs and services the file event.
+		     */
+
+		    if (tsdPtr->prevPtr) {
+			tsdPtr->prevPtr->nextPtr = tsdPtr->nextPtr;
+		    } else {
+			waitingListPtr = tsdPtr->nextPtr;
+		    }
+		    if (tsdPtr->nextPtr) {
+			tsdPtr->nextPtr->prevPtr = tsdPtr->prevPtr;
+		    }
+		    tsdPtr->nextPtr = tsdPtr->prevPtr = NULL;
+		    tsdPtr->onList = 0;
+		    tsdPtr->pollState = 0;
+		}
+#ifdef __CYGWIN__
+		PostMessageW(tsdPtr->hwnd, 1024, 0, 0);
+#else /* __CYGWIN__ */
+		pthread_cond_broadcast(&tsdPtr->waitCV);
+#endif /* __CYGWIN__ */
+	    }
+	}
+	pthread_mutex_unlock(&notifierMutex);
+
+	/*
+	 * Consume the next byte from the notifier pipe if the pipe was
+	 * readable. Note that there may be multiple bytes pending, but to
+	 * avoid a race condition we only read one at a time.
+	 */
+
+	if (FD_ISSET(receivePipe, &readableMask)) {
+	    i = read(receivePipe, buf, 1);
+
+	    if ((i == 0) || ((i == 1) && (buf[0] == 'q'))) {
+		/*
+		 * Someone closed the write end of the pipe or sent us a Quit
+		 * message [Bug: 4139] and then closed the write end of the
+		 * pipe so we need to shut down the notifier thread.
+		 */
+
+		break;
+	    }
+	}
+    }
+
+    /*
+     * Clean up the read end of the pipe and signal any threads waiting on
+     * termination of the notifier thread.
+     */
+
+    close(receivePipe);
+    pthread_mutex_lock(&notifierMutex);
+    triggerPipe = -1;
+    pthread_cond_broadcast(&notifierCV);
+    pthread_mutex_unlock(&notifierMutex);
+
+    TclpThreadExit(0);
+}
+
+#if defined(HAVE_PTHREAD_ATFORK)
+/*
+ *----------------------------------------------------------------------
+ *
+ * AtForkPrepare --
+ *
+ *	Lock the notifier in preparation for a fork.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+AtForkPrepare(void)
+{
+#if RESET_ATFORK_MUTEX == 0
+    pthread_mutex_lock(&notifierInitMutex);
+#endif
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * AtForkParent --
+ *
+ *	Unlock the notifier in the parent after a fork.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+AtForkParent(void)
+{
+#if RESET_ATFORK_MUTEX == 0
+    pthread_mutex_unlock(&notifierInitMutex);
+#endif
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * AtForkChild --
+ *
+ *	Unlock and reinstall the notifier in the child after a fork.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+AtForkChild(void)
+{
+    if (notifierThreadRunning == 1) {
+	pthread_cond_destroy(&notifierCV);
+    }
+#if RESET_ATFORK_MUTEX == 0
+    pthread_mutex_unlock(&notifierInitMutex);
+#else
+    pthread_mutex_init(&notifierInitMutex, NULL);
+    pthread_mutex_init(&notifierMutex, NULL);
+#endif
+    pthread_cond_init(&notifierCV, NULL);
+
+    /*
+     * notifierThreadRunning == 1: thread is running, (there might be data in notifier lists)
+     * atForkInit == 0: InitNotifier was never called
+     * notifierCount != 0: unbalanced  InitNotifier() / FinalizeNotifier calls
+     * waitingListPtr != 0: there are threads currently waiting for events.
+     */
+
+    if (atForkInit == 1) {
+
+	notifierCount = 0;
+	if (notifierThreadRunning == 1) {
+	    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
+	    notifierThreadRunning = 0;
+
+	    close(triggerPipe);
+	    triggerPipe = -1;
+	    /*
+	     * The waitingListPtr might contain event info from multiple
+	     * threads, which are invalid here, so setting it to NULL is not
+	     * unreasonable.
+	     */
+	    waitingListPtr = NULL;
+
+	    /*
+	     * The tsdPtr from before the fork is copied as well.  But since
+	     * we are paranoic, we don't trust its condvar and reset it.
+	     */
+#ifdef __CYGWIN__
+	    DestroyWindow(tsdPtr->hwnd);
+	    tsdPtr->hwnd = CreateWindowExW(NULL, NotfyClassName,
+		    NotfyClassName, 0, 0, 0, 0, 0, NULL, NULL,
+		    TclWinGetTclInstance(), NULL);
+	    ResetEvent(tsdPtr->event);
+#else
+	    pthread_cond_destroy(&tsdPtr->waitCV);
+	    pthread_cond_init(&tsdPtr->waitCV, NULL);
+#endif
+	    /*
+	     * In case, we had multiple threads running before the fork,
+	     * make sure, we don't try to reach out to their thread local data.
+	     */
+	    tsdPtr->nextPtr = tsdPtr->prevPtr = NULL;
+
+	    /*
+	     * The list of registered event handlers at fork time is in
+	     * tsdPtr->firstFileHandlerPtr;
+	     */
+	}
+    }
+
+    Tcl_InitNotifier();
+}
+#endif /* HAVE_PTHREAD_ATFORK */
+
+#endif /* TCL_THREADS */
+
+#endif /* !HAVE_COREFOUNDATION */
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/tcl8.6/unix/tclUnixPipe.c b/tcl8.6/unix/tclUnixPipe.c
new file mode 100644
index 0000000..8b26694
--- /dev/null
+++ b/tcl8.6/unix/tclUnixPipe.c
@@ -0,0 +1,1327 @@
+/*
+ * tclUnixPipe.c --
+ *
+ *	This file implements the UNIX-specific exec pipeline functions, the
+ *	"pipe" channel driver, and the "pid" Tcl command.
+ *
+ * Copyright (c) 1991-1994 The Regents of the University of California.
+ * Copyright (c) 1994-1997 Sun Microsystems, Inc.
+ *
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ */
+
+#include "tclInt.h"
+
+#ifdef USE_VFORK
+#define fork vfork
+#endif
+
+/*
+ * The following macros convert between TclFile's and fd's. The conversion
+ * simple involves shifting fd's up by one to ensure that no valid fd is ever
+ * the same as NULL.
+ */
+
+#define MakeFile(fd)	((TclFile) INT2PTR(((int) (fd)) + 1))
+#define GetFd(file)	(PTR2INT(file) - 1)
+
+/*
+ * This structure describes per-instance state of a pipe based channel.
+ */
+
+typedef struct PipeState {
+    Tcl_Channel channel;	/* Channel associated with this file. */
+    TclFile inFile;		/* Output from pipe. */
+    TclFile outFile;		/* Input to pipe. */
+    TclFile errorFile;		/* Error output from pipe. */
+    int numPids;		/* How many processes are attached to this
+				 * pipe? */
+    Tcl_Pid *pidPtr;		/* The process IDs themselves. Allocated by
+				 * the creator of the pipe. */
+    int isNonBlocking;		/* Nonzero when the pipe is in nonblocking
+				 * mode. Used to decide whether to wait for
+				 * the children at close time. */
+} PipeState;
+
+/*
+ * Declarations for local functions defined in this file:
+ */
+
+static int		PipeBlockModeProc(ClientData instanceData, int mode);
+static int		PipeClose2Proc(ClientData instanceData,
+			    Tcl_Interp *interp, int flags);
+static int		PipeGetHandleProc(ClientData instanceData,
+			    int direction, ClientData *handlePtr);
+static int		PipeInputProc(ClientData instanceData, char *buf,
+			    int toRead, int *errorCode);
+static int		PipeOutputProc(ClientData instanceData,
+			    const char *buf, int toWrite, int *errorCode);
+static void		PipeWatchProc(ClientData instanceData, int mask);
+static void		RestoreSignals(void);
+static int		SetupStdFile(TclFile file, int type);
+
+/*
+ * This structure describes the channel type structure for command pipe based
+ * I/O:
+ */
+
+static const Tcl_ChannelType pipeChannelType = {
+    "pipe",			/* Type name. */
+    TCL_CHANNEL_VERSION_5,	/* v5 channel */
+    TCL_CLOSE2PROC,		/* Close proc. */
+    PipeInputProc,		/* Input proc. */
+    PipeOutputProc,		/* Output proc. */
+    NULL,			/* Seek proc. */
+    NULL,			/* Set option proc. */
+    NULL,			/* Get option proc. */
+    PipeWatchProc,		/* Initialize notifier. */
+    PipeGetHandleProc,		/* Get OS handles out of channel. */
+    PipeClose2Proc,		/* close2proc. */
+    PipeBlockModeProc,		/* Set blocking or non-blocking mode.*/
+    NULL,			/* flush proc. */
+    NULL,			/* handler proc. */
+    NULL,			/* wide seek proc */
+    NULL,			/* thread action proc */
+    NULL			/* truncation */
+};
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclpMakeFile --
+ *
+ *	Make a TclFile from a channel.
+ *
+ * Results:
+ *	Returns a new TclFile or NULL on failure.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+TclFile
+TclpMakeFile(
+    Tcl_Channel channel,	/* Channel to get file from. */
+    int direction)		/* Either TCL_READABLE or TCL_WRITABLE. */
+{
+    ClientData data;
+
+    if (Tcl_GetChannelHandle(channel, direction, &data) != TCL_OK) {
+	return NULL;
+    }
+
+    return MakeFile(PTR2INT(data));
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclpOpenFile --
+ *
+ *	Open a file for use in a pipeline.
+ *
+ * Results:
+ *	Returns a new TclFile handle or NULL on failure.
+ *
+ * Side effects:
+ *	May cause a file to be created on the file system.
+ *
+ *----------------------------------------------------------------------
+ */
+
+TclFile
+TclpOpenFile(
+    const char *fname,		/* The name of the file to open. */
+    int mode)			/* In what mode to open the file? */
+{
+    int fd;
+    const char *native;
+    Tcl_DString ds;
+
+    native = Tcl_UtfToExternalDString(NULL, fname, -1, &ds);
+    fd = TclOSopen(native, mode, 0666);			/* INTL: Native. */
+    Tcl_DStringFree(&ds);
+    if (fd != -1) {
+	fcntl(fd, F_SETFD, FD_CLOEXEC);
+
+	/*
+	 * If the file is being opened for writing, seek to the end so we can
+	 * append to any data already in the file.
+	 */
+
+	if ((mode & O_WRONLY) && !(mode & O_APPEND)) {
+	    TclOSseek(fd, (Tcl_SeekOffset) 0, SEEK_END);
+	}
+
+	/*
+	 * Increment the fd so it can't be 0, which would conflict with the
+	 * NULL return for errors.
+	 */
+
+	return MakeFile(fd);
+    }
+    return NULL;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclpCreateTempFile --
+ *
+ *	This function creates a temporary file initialized with an optional
+ *	string, and returns a file handle with the file pointer at the
+ *	beginning of the file.
+ *
+ * Results:
+ *	A handle to a file.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+TclFile
+TclpCreateTempFile(
+    const char *contents)	/* String to write into temp file, or NULL. */
+{
+    int fd = TclUnixOpenTemporaryFile(NULL, NULL, NULL, NULL);
+
+    if (fd == -1) {
+	return NULL;
+    }
+    fcntl(fd, F_SETFD, FD_CLOEXEC);
+    if (contents != NULL) {
+	Tcl_DString dstring;
+	char *native;
+
+	native = Tcl_UtfToExternalDString(NULL, contents, -1, &dstring);
+	if (write(fd, native, Tcl_DStringLength(&dstring)) == -1) {
+	    close(fd);
+	    Tcl_DStringFree(&dstring);
+	    return NULL;
+	}
+	Tcl_DStringFree(&dstring);
+	TclOSseek(fd, (Tcl_SeekOffset) 0, SEEK_SET);
+    }
+    return MakeFile(fd);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclpTempFileName --
+ *
+ *	This function returns unique filename.
+ *
+ * Results:
+ *	Returns a valid Tcl_Obj* with refCount 0, or NULL on failure.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+Tcl_Obj *
+TclpTempFileName(void)
+{
+    Tcl_Obj *retVal, *nameObj = Tcl_NewObj();
+    int fd;
+
+    Tcl_IncrRefCount(nameObj);
+    fd = TclUnixOpenTemporaryFile(NULL, NULL, NULL, nameObj);
+    if (fd == -1) {
+	Tcl_DecrRefCount(nameObj);
+	return NULL;
+    }
+
+    fcntl(fd, F_SETFD, FD_CLOEXEC);
+    TclpObjDeleteFile(nameObj);
+    close(fd);
+    retVal = Tcl_DuplicateObj(nameObj);
+    Tcl_DecrRefCount(nameObj);
+    return retVal;
+}
+
+/*
+ *----------------------------------------------------------------------------
+ *
+ * TclpTempFileNameForLibrary --
+ *
+ *	Constructs a file name in the native file system where a dynamically
+ *	loaded library may be placed.
+ *
+ * Results:
+ *	Returns the constructed file name. If an error occurs, returns NULL
+ *	and leaves an error message in the interpreter result.
+ *
+ * On Unix, it works to load a shared object from a file of any name, so this
+ * function is merely a thin wrapper around TclpTempFileName().
+ *
+ *----------------------------------------------------------------------------
+ */
+
+Tcl_Obj *
+TclpTempFileNameForLibrary(
+    Tcl_Interp *interp,		/* Tcl interpreter. */
+    Tcl_Obj *path)		/* Path name of the library in the VFS. */
+{
+    Tcl_Obj *retval = TclpTempFileName();
+
+    if (retval == NULL) {
+	Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+		"couldn't create temporary file: %s",
+		Tcl_PosixError(interp)));
+    }
+    return retval;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclpCreatePipe --
+ *
+ *	Creates a pipe - simply calls the pipe() function.
+ *
+ * Results:
+ *	Returns 1 on success, 0 on failure.
+ *
+ * Side effects:
+ *	Creates a pipe.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclpCreatePipe(
+    TclFile *readPipe,		/* Location to store file handle for read side
+				 * of pipe. */
+    TclFile *writePipe)		/* Location to store file handle for write
+				 * side of pipe. */
+{
+    int pipeIds[2];
+
+    if (pipe(pipeIds) != 0) {
+	return 0;
+    }
+
+    fcntl(pipeIds[0], F_SETFD, FD_CLOEXEC);
+    fcntl(pipeIds[1], F_SETFD, FD_CLOEXEC);
+
+    *readPipe = MakeFile(pipeIds[0]);
+    *writePipe = MakeFile(pipeIds[1]);
+    return 1;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclpCloseFile --
+ *
+ *	Implements a mechanism to close a UNIX file.
+ *
+ * Results:
+ *	Returns 0 on success, or -1 on error, setting errno.
+ *
+ * Side effects:
+ *	The file is closed.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclpCloseFile(
+    TclFile file)	/* The file to close. */
+{
+    int fd = GetFd(file);
+
+    /*
+     * Refuse to close the fds for stdin, stdout and stderr.
+     */
+
+    if ((fd == 0) || (fd == 1) || (fd == 2)) {
+	return 0;
+    }
+
+    Tcl_DeleteFileHandler(fd);
+    return close(fd);
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * TclpCreateProcess --
+ *
+ *	Create a child process that has the specified files as its standard
+ *	input, output, and error. The child process runs asynchronously and
+ *	runs with the same environment variables as the creating process.
+ *
+ *	The path is searched to find the specified executable.
+ *
+ * Results:
+ *	The return value is TCL_ERROR and an error message is left in the
+ *	interp's result if there was a problem creating the child process.
+ *	Otherwise, the return value is TCL_OK and *pidPtr is filled with the
+ *	process id of the child process.
+ *
+ * Side effects:
+ *	A process is created.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+    /* ARGSUSED */
+int
+TclpCreateProcess(
+    Tcl_Interp *interp,		/* Interpreter in which to leave errors that
+				 * occurred when creating the child process.
+				 * Error messages from the child process
+				 * itself are sent to errorFile. */
+    int argc,			/* Number of arguments in following array. */
+    const char **argv,		/* Array of argument strings in UTF-8.
+				 * argv[0] contains the name of the executable
+				 * translated using Tcl_TranslateFileName
+				 * call). Additional arguments have not been
+				 * converted. */
+    TclFile inputFile,		/* If non-NULL, gives the file to use as input
+				 * for the child process. If inputFile file is
+				 * not readable or is NULL, the child will
+				 * receive no standard input. */
+    TclFile outputFile,		/* If non-NULL, gives the file that receives
+				 * output from the child process. If
+				 * outputFile file is not writeable or is
+				 * NULL, output from the child will be
+				 * discarded. */
+    TclFile errorFile,		/* If non-NULL, gives the file that receives
+				 * errors from the child process. If errorFile
+				 * file is not writeable or is NULL, errors
+				 * from the child will be discarded. errorFile
+				 * may be the same as outputFile. */
+    Tcl_Pid *pidPtr)		/* If this function is successful, pidPtr is
+				 * filled with the process id of the child
+				 * process. */
+{
+    TclFile errPipeIn, errPipeOut;
+    int count, status, fd;
+    char errSpace[200 + TCL_INTEGER_SPACE];
+    Tcl_DString *dsArray;
+    char **newArgv;
+    int pid, i;
+
+    errPipeIn = NULL;
+    errPipeOut = NULL;
+    pid = -1;
+
+    /*
+     * Create a pipe that the child can use to return error information if
+     * anything goes wrong.
+     */
+
+    if (TclpCreatePipe(&errPipeIn, &errPipeOut) == 0) {
+	Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+		"couldn't create pipe: %s", Tcl_PosixError(interp)));
+	goto error;
+    }
+
+    /*
+     * We need to allocate and convert this before the fork so it is properly
+     * deallocated later
+     */
+
+    dsArray = TclStackAlloc(interp, argc * sizeof(Tcl_DString));
+    newArgv = TclStackAlloc(interp, (argc+1) * sizeof(char *));
+    newArgv[argc] = NULL;
+    for (i = 0; i < argc; i++) {
+	newArgv[i] = Tcl_UtfToExternalDString(NULL, argv[i], -1, &dsArray[i]);
+    }
+
+#ifdef USE_VFORK
+    /*
+     * After vfork(), do not call code in the child that changes global state,
+     * because it is using the parent's memory space at that point and writes
+     * might corrupt the parent: so ensure standard channels are initialized
+     * in the parent, otherwise SetupStdFile() might initialize them in the
+     * child.
+     */
+
+    if (!inputFile) {
+	Tcl_GetStdChannel(TCL_STDIN);
+    }
+    if (!outputFile) {
+        Tcl_GetStdChannel(TCL_STDOUT);
+    }
+    if (!errorFile) {
+        Tcl_GetStdChannel(TCL_STDERR);
+    }
+#endif
+
+    pid = fork();
+    if (pid == 0) {
+	size_t len;
+	int joinThisError = errorFile && (errorFile == outputFile);
+
+	fd = GetFd(errPipeOut);
+
+	/*
+	 * Set up stdio file handles for the child process.
+	 */
+
+	if (!SetupStdFile(inputFile, TCL_STDIN)
+		|| !SetupStdFile(outputFile, TCL_STDOUT)
+		|| (!joinThisError && !SetupStdFile(errorFile, TCL_STDERR))
+		|| (joinThisError &&
+			((dup2(1,2) == -1) || (fcntl(2, F_SETFD, 0) != 0)))) {
+	    sprintf(errSpace,
+		    "%dforked process couldn't set up input/output", errno);
+	    len = strlen(errSpace);
+	    if (len != (size_t) write(fd, errSpace, len)) {
+		    Tcl_Panic("TclpCreateProcess: unable to write to errPipeOut");
+	    }
+	    _exit(1);
+	}
+
+	/*
+	 * Close the input side of the error pipe.
+	 */
+
+	RestoreSignals();
+	execvp(newArgv[0], newArgv);			/* INTL: Native. */
+	sprintf(errSpace, "%dcouldn't execute \"%.150s\"", errno, argv[0]);
+	len = strlen(errSpace);
+	if (len != (size_t) write(fd, errSpace, len)) {
+	    Tcl_Panic("TclpCreateProcess: unable to write to errPipeOut");
+	}
+	_exit(1);
+    }
+
+    /*
+     * Free the mem we used for the fork
+     */
+
+    for (i = 0; i < argc; i++) {
+	Tcl_DStringFree(&dsArray[i]);
+    }
+    TclStackFree(interp, newArgv);
+    TclStackFree(interp, dsArray);
+
+    if (pid == -1) {
+	Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+		"couldn't fork child process: %s", Tcl_PosixError(interp)));
+	goto error;
+    }
+
+    /*
+     * Read back from the error pipe to see if the child started up OK. The
+     * info in the pipe (if any) consists of a decimal errno value followed by
+     * an error message.
+     */
+
+    TclpCloseFile(errPipeOut);
+    errPipeOut = NULL;
+
+    fd = GetFd(errPipeIn);
+    count = read(fd, errSpace, (size_t) (sizeof(errSpace) - 1));
+    if (count > 0) {
+	char *end;
+
+	errSpace[count] = 0;
+	errno = strtol(errSpace, &end, 10);
+	Tcl_SetObjResult(interp, Tcl_ObjPrintf("%s: %s",
+		end, Tcl_PosixError(interp)));
+	goto error;
+    }
+
+    TclpCloseFile(errPipeIn);
+    *pidPtr = (Tcl_Pid) INT2PTR(pid);
+    return TCL_OK;
+
+  error:
+    if (pid != -1) {
+	/*
+	 * Reap the child process now if an error occurred during its startup.
+	 * We don't call this with WNOHANG because that can lead to defunct
+	 * processes on an MP system. We shouldn't have to worry about hanging
+	 * here, since this is the error case. [Bug: 6148]
+	 */
+
+	Tcl_WaitPid((Tcl_Pid) INT2PTR(pid), &status, 0);
+    }
+
+    if (errPipeIn) {
+	TclpCloseFile(errPipeIn);
+    }
+    if (errPipeOut) {
+	TclpCloseFile(errPipeOut);
+    }
+    return TCL_ERROR;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * RestoreSignals --
+ *
+ *	This function is invoked in a forked child process just before
+ *	exec-ing a new program to restore all signals to their default
+ *	settings.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Signal settings get changed.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+RestoreSignals(void)
+{
+#ifdef SIGABRT
+    signal(SIGABRT, SIG_DFL);
+#endif
+#ifdef SIGALRM
+    signal(SIGALRM, SIG_DFL);
+#endif
+#ifdef SIGFPE
+    signal(SIGFPE, SIG_DFL);
+#endif
+#ifdef SIGHUP
+    signal(SIGHUP, SIG_DFL);
+#endif
+#ifdef SIGILL
+    signal(SIGILL, SIG_DFL);
+#endif
+#ifdef SIGINT
+    signal(SIGINT, SIG_DFL);
+#endif
+#ifdef SIGPIPE
+    signal(SIGPIPE, SIG_DFL);
+#endif
+#ifdef SIGQUIT
+    signal(SIGQUIT, SIG_DFL);
+#endif
+#ifdef SIGSEGV
+    signal(SIGSEGV, SIG_DFL);
+#endif
+#ifdef SIGTERM
+    signal(SIGTERM, SIG_DFL);
+#endif
+#ifdef SIGUSR1
+    signal(SIGUSR1, SIG_DFL);
+#endif
+#ifdef SIGUSR2
+    signal(SIGUSR2, SIG_DFL);
+#endif
+#ifdef SIGCHLD
+    signal(SIGCHLD, SIG_DFL);
+#endif
+#ifdef SIGCONT
+    signal(SIGCONT, SIG_DFL);
+#endif
+#ifdef SIGTSTP
+    signal(SIGTSTP, SIG_DFL);
+#endif
+#ifdef SIGTTIN
+    signal(SIGTTIN, SIG_DFL);
+#endif
+#ifdef SIGTTOU
+    signal(SIGTTOU, SIG_DFL);
+#endif
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * SetupStdFile --
+ *
+ *	Set up stdio file handles for the child process, using the current
+ *	standard channels if no other files are specified. If no standard
+ *	channel is defined, or if no file is associated with the channel, then
+ *	the corresponding standard fd is closed.
+ *
+ * Results:
+ *	Returns 1 on success, or 0 on failure.
+ *
+ * Side effects:
+ *	Replaces stdio fds.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+SetupStdFile(
+    TclFile file,		/* File to dup, or NULL. */
+    int type)			/* One of TCL_STDIN, TCL_STDOUT, TCL_STDERR */
+{
+    Tcl_Channel channel;
+    int fd;
+    int targetFd = 0;		/* Initializations here needed only to */
+    int direction = 0;		/* prevent warnings about using uninitialized
+				 * variables. */
+
+    switch (type) {
+    case TCL_STDIN:
+	targetFd = 0;
+	direction = TCL_READABLE;
+	break;
+    case TCL_STDOUT:
+	targetFd = 1;
+	direction = TCL_WRITABLE;
+	break;
+    case TCL_STDERR:
+	targetFd = 2;
+	direction = TCL_WRITABLE;
+	break;
+    }
+
+    if (!file) {
+	channel = Tcl_GetStdChannel(type);
+	if (channel) {
+	    file = TclpMakeFile(channel, direction);
+	}
+    }
+    if (file) {
+	fd = GetFd(file);
+	if (fd != targetFd) {
+	    if (dup2(fd, targetFd) == -1) {
+		return 0;
+	    }
+
+	    /*
+	     * Must clear the close-on-exec flag for the target FD, since some
+	     * systems (e.g. Ultrix) do not clear the CLOEXEC flag on the
+	     * target FD.
+	     */
+
+	    fcntl(targetFd, F_SETFD, 0);
+	} else {
+	    /*
+	     * Since we aren't dup'ing the file, we need to explicitly clear
+	     * the close-on-exec flag.
+	     */
+
+	    fcntl(fd, F_SETFD, 0);
+	}
+    } else {
+	close(targetFd);
+    }
+    return 1;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclpCreateCommandChannel --
+ *
+ *	This function is called by the generic IO level to perform the
+ *	platform specific channel initialization for a command channel.
+ *
+ * Results:
+ *	Returns a new channel or NULL on failure.
+ *
+ * Side effects:
+ *	Allocates a new channel.
+ *
+ *----------------------------------------------------------------------
+ */
+
+Tcl_Channel
+TclpCreateCommandChannel(
+    TclFile readFile,		/* If non-null, gives the file for reading. */
+    TclFile writeFile,		/* If non-null, gives the file for writing. */
+    TclFile errorFile,		/* If non-null, gives the file where errors
+				 * can be read. */
+    int numPids,		/* The number of pids in the pid array. */
+    Tcl_Pid *pidPtr)		/* An array of process identifiers. Allocated
+				 * by the caller, freed when the channel is
+				 * closed or the processes are detached (in a
+				 * background exec). */
+{
+    char channelName[16 + TCL_INTEGER_SPACE];
+    int channelId;
+    PipeState *statePtr = ckalloc(sizeof(PipeState));
+    int mode;
+
+    statePtr->inFile = readFile;
+    statePtr->outFile = writeFile;
+    statePtr->errorFile = errorFile;
+    statePtr->numPids = numPids;
+    statePtr->pidPtr = pidPtr;
+    statePtr->isNonBlocking = 0;
+
+    mode = 0;
+    if (readFile) {
+	mode |= TCL_READABLE;
+    }
+    if (writeFile) {
+	mode |= TCL_WRITABLE;
+    }
+
+    /*
+     * Use one of the fds associated with the channel as the channel id.
+     */
+
+    if (readFile) {
+	channelId = GetFd(readFile);
+    } else if (writeFile) {
+	channelId = GetFd(writeFile);
+    } else if (errorFile) {
+	channelId = GetFd(errorFile);
+    } else {
+	channelId = 0;
+    }
+
+    /*
+     * For backward compatibility with previous versions of Tcl, we use
+     * "file%d" as the base name for pipes even though it would be more
+     * natural to use "pipe%d".
+     */
+
+    sprintf(channelName, "file%d", channelId);
+    statePtr->channel = Tcl_CreateChannel(&pipeChannelType, channelName,
+	    statePtr, mode);
+    return statePtr->channel;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_CreatePipe --
+ *
+ *	System dependent interface to create a pipe for the [chan pipe]
+ *	command. Stolen from TclX.
+ *
+ * Results:
+ *	TCL_OK or TCL_ERROR.
+ *
+ * Side effects:
+ *	Registers two channels.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+Tcl_CreatePipe(
+    Tcl_Interp *interp,		/* Errors returned in result. */
+    Tcl_Channel *rchan,		/* Returned read side. */
+    Tcl_Channel *wchan,		/* Returned write side. */
+    int flags)			/* Reserved for future use. */
+{
+    int fileNums[2];
+
+    if (pipe(fileNums) < 0) {
+	Tcl_SetObjResult(interp, Tcl_ObjPrintf("pipe creation failed: %s",
+		Tcl_PosixError(interp)));
+	return TCL_ERROR;
+    }
+
+    fcntl(fileNums[0], F_SETFD, FD_CLOEXEC);
+    fcntl(fileNums[1], F_SETFD, FD_CLOEXEC);
+
+    *rchan = Tcl_MakeFileChannel(INT2PTR(fileNums[0]), TCL_READABLE);
+    Tcl_RegisterChannel(interp, *rchan);
+    *wchan = Tcl_MakeFileChannel(INT2PTR(fileNums[1]), TCL_WRITABLE);
+    Tcl_RegisterChannel(interp, *wchan);
+
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclGetAndDetachPids --
+ *
+ *	This function is invoked in the generic implementation of a
+ *	background "exec" (an exec when invoked with a terminating "&") to
+ *	store a list of the PIDs for processes in a command pipeline in the
+ *	interp's result and to detach the processes.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Modifies the interp's result. Detaches processes.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+TclGetAndDetachPids(
+    Tcl_Interp *interp,		/* Interpreter to append the PIDs to. */
+    Tcl_Channel chan)		/* Handle for the pipeline. */
+{
+    PipeState *pipePtr;
+    const Tcl_ChannelType *chanTypePtr;
+    Tcl_Obj *pidsObj;
+    int i;
+
+    /*
+     * Punt if the channel is not a command channel.
+     */
+
+    chanTypePtr = Tcl_GetChannelType(chan);
+    if (chanTypePtr != &pipeChannelType) {
+	return;
+    }
+
+    pipePtr = Tcl_GetChannelInstanceData(chan);
+    TclNewObj(pidsObj);
+    for (i = 0; i < pipePtr->numPids; i++) {
+	Tcl_ListObjAppendElement(NULL, pidsObj, Tcl_NewIntObj(
+		PTR2INT(pipePtr->pidPtr[i])));
+	Tcl_DetachPids(1, &pipePtr->pidPtr[i]);
+    }
+    Tcl_SetObjResult(interp, pidsObj);
+    if (pipePtr->numPids > 0) {
+	ckfree(pipePtr->pidPtr);
+	pipePtr->numPids = 0;
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * PipeBlockModeProc --
+ *
+ *	Helper function to set blocking and nonblocking modes on a pipe based
+ *	channel. Invoked by generic IO level code.
+ *
+ * Results:
+ *	0 if successful, errno when failed.
+ *
+ * Side effects:
+ *	Sets the device into blocking or non-blocking mode.
+ *
+ *----------------------------------------------------------------------
+ */
+
+	/* ARGSUSED */
+static int
+PipeBlockModeProc(
+    ClientData instanceData,	/* Pipe state. */
+    int mode)			/* The mode to set. Can be one of
+				 * TCL_MODE_BLOCKING or
+				 * TCL_MODE_NONBLOCKING. */
+{
+    PipeState *psPtr = instanceData;
+
+    if (psPtr->inFile
+	    && TclUnixSetBlockingMode(GetFd(psPtr->inFile), mode) < 0) {
+	return errno;
+    }
+    if (psPtr->outFile
+	    && TclUnixSetBlockingMode(GetFd(psPtr->outFile), mode) < 0) {
+	return errno;
+    }
+
+    psPtr->isNonBlocking = (mode == TCL_MODE_NONBLOCKING);
+
+    return 0;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * PipeClose2Proc
+ *
+ *	This function is invoked by the generic IO level to perform
+ *	pipeline-type-specific half or full-close.
+ *
+ * Results:
+ *	0 on success, errno otherwise.
+ *
+ * Side effects:
+ *	Closes the command pipeline channel.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+PipeClose2Proc(
+    ClientData instanceData,	/* The pipe to close. */
+    Tcl_Interp *interp,		/* For error reporting. */
+    int flags)			/* Flags that indicate which side to close. */
+{
+    PipeState *pipePtr = instanceData;
+    Tcl_Channel errChan;
+    int errorCode, result;
+
+    errorCode = 0;
+    result = 0;
+
+    if (((!flags) || (flags & TCL_CLOSE_READ)) && (pipePtr->inFile != NULL)) {
+	if (TclpCloseFile(pipePtr->inFile) < 0) {
+	    errorCode = errno;
+	} else {
+	    pipePtr->inFile = NULL;
+	}
+    }
+    if (((!flags) || (flags & TCL_CLOSE_WRITE)) && (pipePtr->outFile != NULL)
+	    && (errorCode == 0)) {
+	if (TclpCloseFile(pipePtr->outFile) < 0) {
+	    errorCode = errno;
+	} else {
+	    pipePtr->outFile = NULL;
+	}
+    }
+
+    /*
+     * If half-closing, stop here.
+     */
+
+    if (flags) {
+	return errorCode;
+    }
+
+    if (pipePtr->isNonBlocking || TclInExit()) {
+	/*
+	 * If the channel is non-blocking or Tcl is being cleaned up, just
+	 * detach the children PIDs, reap them (important if we are in a
+	 * dynamic load module), and discard the errorFile.
+	 */
+
+	Tcl_DetachPids(pipePtr->numPids, pipePtr->pidPtr);
+	Tcl_ReapDetachedProcs();
+
+	if (pipePtr->errorFile) {
+	    TclpCloseFile(pipePtr->errorFile);
+	}
+    } else {
+	/*
+	 * Wrap the error file into a channel and give it to the cleanup
+	 * routine.
+	 */
+
+	if (pipePtr->errorFile) {
+	    errChan = Tcl_MakeFileChannel(
+		    INT2PTR(GetFd(pipePtr->errorFile)),
+		    TCL_READABLE);
+	} else {
+	    errChan = NULL;
+	}
+	result = TclCleanupChildren(interp, pipePtr->numPids, pipePtr->pidPtr,
+		errChan);
+    }
+
+    if (pipePtr->numPids != 0) {
+	ckfree(pipePtr->pidPtr);
+    }
+    ckfree(pipePtr);
+    if (errorCode == 0) {
+	return result;
+    }
+    return errorCode;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * PipeInputProc --
+ *
+ *	This function is invoked from the generic IO level to read input from
+ *	a command pipeline based channel.
+ *
+ * Results:
+ *	The number of bytes read is returned or -1 on error. An output
+ *	argument contains a POSIX error code if an error occurs, or zero.
+ *
+ * Side effects:
+ *	Reads input from the input device of the channel.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+PipeInputProc(
+    ClientData instanceData,	/* Pipe state. */
+    char *buf,			/* Where to store data read. */
+    int toRead,			/* How much space is available in the
+				 * buffer? */
+    int *errorCodePtr)		/* Where to store error code. */
+{
+    PipeState *psPtr = instanceData;
+    int bytesRead;		/* How many bytes were actually read from the
+				 * input device? */
+
+    *errorCodePtr = 0;
+
+    /*
+     * Assume there is always enough input available. This will block
+     * appropriately, and read will unblock as soon as a short read is
+     * possible, if the channel is in blocking mode. If the channel is
+     * nonblocking, the read will never block. Some OSes can throw an
+     * interrupt error, for which we should immediately retry. [Bug #415131]
+     */
+
+    do {
+	bytesRead = read(GetFd(psPtr->inFile), buf, (size_t) toRead);
+    } while ((bytesRead < 0) && (errno == EINTR));
+
+    if (bytesRead < 0) {
+	*errorCodePtr = errno;
+	return -1;
+    }
+    return bytesRead;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * PipeOutputProc--
+ *
+ *	This function is invoked from the generic IO level to write output to
+ *	a command pipeline based channel.
+ *
+ * Results:
+ *	The number of bytes written is returned or -1 on error. An output
+ *	argument contains a POSIX error code if an error occurred, or zero.
+ *
+ * Side effects:
+ *	Writes output on the output device of the channel.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+PipeOutputProc(
+    ClientData instanceData,	/* Pipe state. */
+    const char *buf,		/* The data buffer. */
+    int toWrite,		/* How many bytes to write? */
+    int *errorCodePtr)		/* Where to store error code. */
+{
+    PipeState *psPtr = instanceData;
+    int written;
+
+    *errorCodePtr = 0;
+
+    /*
+     * Some OSes can throw an interrupt error, for which we should immediately
+     * retry. [Bug #415131]
+     */
+
+    do {
+	written = write(GetFd(psPtr->outFile), buf, (size_t) toWrite);
+    } while ((written < 0) && (errno == EINTR));
+
+    if (written < 0) {
+	*errorCodePtr = errno;
+	return -1;
+    }
+    return written;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * PipeWatchProc --
+ *
+ *	Initialize the notifier to watch the fds from this channel.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Sets up the notifier so that a future event on the channel will be
+ *	seen by Tcl.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+PipeWatchProc(
+    ClientData instanceData,	/* The pipe state. */
+    int mask)			/* Events of interest; an OR-ed combination of
+				 * TCL_READABLE, TCL_WRITABLE and
+				 * TCL_EXCEPTION. */
+{
+    PipeState *psPtr = instanceData;
+    int newmask;
+
+    if (psPtr->inFile) {
+	newmask = mask & (TCL_READABLE | TCL_EXCEPTION);
+	if (newmask) {
+	    Tcl_CreateFileHandler(GetFd(psPtr->inFile), newmask,
+		    (Tcl_FileProc *) Tcl_NotifyChannel, psPtr->channel);
+	} else {
+	    Tcl_DeleteFileHandler(GetFd(psPtr->inFile));
+	}
+    }
+    if (psPtr->outFile) {
+	newmask = mask & (TCL_WRITABLE | TCL_EXCEPTION);
+	if (newmask) {
+	    Tcl_CreateFileHandler(GetFd(psPtr->outFile), newmask,
+		    (Tcl_FileProc *) Tcl_NotifyChannel, psPtr->channel);
+	} else {
+	    Tcl_DeleteFileHandler(GetFd(psPtr->outFile));
+	}
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * PipeGetHandleProc --
+ *
+ *	Called from Tcl_GetChannelHandle to retrieve OS handles from inside a
+ *	command pipeline based channel.
+ *
+ * Results:
+ *	Returns TCL_OK with the fd in handlePtr, or TCL_ERROR if there is no
+ *	handle for the specified direction.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+PipeGetHandleProc(
+    ClientData instanceData,	/* The pipe state. */
+    int direction,		/* TCL_READABLE or TCL_WRITABLE */
+    ClientData *handlePtr)	/* Where to store the handle. */
+{
+    PipeState *psPtr = instanceData;
+
+    if (direction == TCL_READABLE && psPtr->inFile) {
+	*handlePtr = INT2PTR(GetFd(psPtr->inFile));
+	return TCL_OK;
+    }
+    if (direction == TCL_WRITABLE && psPtr->outFile) {
+	*handlePtr = INT2PTR(GetFd(psPtr->outFile));
+	return TCL_OK;
+    }
+    return TCL_ERROR;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_WaitPid --
+ *
+ *	Implements the waitpid system call on Unix systems.
+ *
+ * Results:
+ *	Result of calling waitpid.
+ *
+ * Side effects:
+ *	Waits for a process to terminate.
+ *
+ *----------------------------------------------------------------------
+ */
+
+Tcl_Pid
+Tcl_WaitPid(
+    Tcl_Pid pid,
+    int *statPtr,
+    int options)
+{
+    int result;
+    pid_t real_pid = (pid_t) PTR2INT(pid);
+
+    while (1) {
+	result = (int) waitpid(real_pid, statPtr, options);
+	if ((result != -1) || (errno != EINTR)) {
+	    return (Tcl_Pid) INT2PTR(result);
+	}
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_PidObjCmd --
+ *
+ *	This function is invoked to process the "pid" Tcl command. See the
+ *	user documentation for details on what it does.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	See the user documentation.
+ *
+ *----------------------------------------------------------------------
+ */
+
+	/* ARGSUSED */
+int
+Tcl_PidObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const *objv)	/* Argument strings. */
+{
+    Tcl_Channel chan;
+    PipeState *pipePtr;
+    int i;
+    Tcl_Obj *resultPtr;
+
+    if (objc > 2) {
+	Tcl_WrongNumArgs(interp, 1, objv, "?channelId?");
+	return TCL_ERROR;
+    }
+
+    if (objc == 1) {
+	Tcl_SetObjResult(interp, Tcl_NewLongObj((long) getpid()));
+    } else {
+	/*
+	 * Get the channel and make sure that it refers to a pipe.
+	 */
+
+	chan = Tcl_GetChannel(interp, Tcl_GetString(objv[1]), NULL);
+	if (chan == NULL) {
+	    return TCL_ERROR;
+	}
+	if (Tcl_GetChannelType(chan) != &pipeChannelType) {
+	    return TCL_OK;
+	}
+
+	/*
+	 * Extract the process IDs from the pipe structure.
+	 */
+
+	pipePtr = Tcl_GetChannelInstanceData(chan);
+	resultPtr = Tcl_NewObj();
+	for (i = 0; i < pipePtr->numPids; i++) {
+	    Tcl_ListObjAppendElement(NULL, resultPtr,
+		    Tcl_NewIntObj(PTR2INT(TclpGetPid(pipePtr->pidPtr[i]))));
+	}
+	Tcl_SetObjResult(interp, resultPtr);
+    }
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclpFinalizePipes --
+ *
+ *	Cleans up the pipe subsystem from Tcl_FinalizeThread
+ *
+ * Results:
+ *	None.
+ *
+ * Notes:
+ *	This function carries out no operation on Unix.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+TclpFinalizePipes(void)
+{
+}
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/tcl8.6/unix/tclUnixPort.h b/tcl8.6/unix/tclUnixPort.h
new file mode 100644
index 0000000..af0b4dc
--- /dev/null
+++ b/tcl8.6/unix/tclUnixPort.h
@@ -0,0 +1,736 @@
+/*
+ * tclUnixPort.h --
+ *
+ *	This header file handles porting issues that occur because of
+ *	differences between systems. It reads in UNIX-related header files and
+ *	sets up UNIX-related macros for Tcl's UNIX core. It should be the only
+ *	file that contains #ifdefs to handle different flavors of UNIX. This
+ *	file sets up the union of all UNIX-related things needed by any of the
+ *	Tcl core files. This file depends on configuration #defines such as
+ *	NO_DIRENT_H that are set up by the "configure" script.
+ *
+ *	Much of the material in this file was originally contributed by Karl
+ *	Lehenbauer, Mark Diekhans and Peter da Silva.
+ *
+ * Copyright (c) 1991-1994 The Regents of the University of California.
+ * Copyright (c) 1994-1997 Sun Microsystems, Inc.
+ *
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ */
+
+#ifndef _TCLUNIXPORT
+#define _TCLUNIXPORT
+
+/*
+ *---------------------------------------------------------------------------
+ * The following sets of #includes and #ifdefs are required to get Tcl to
+ * compile under the various flavors of unix.
+ *---------------------------------------------------------------------------
+ */
+
+#include <errno.h>
+#include <fcntl.h>
+#ifdef HAVE_NET_ERRNO_H
+#   include <net/errno.h>
+#endif
+#include <pwd.h>
+#include <signal.h>
+#ifdef HAVE_SYS_PARAM_H
+#   include <sys/param.h>
+#endif
+#include <sys/types.h>
+#ifdef USE_DIRENT2_H
+#   include "../compat/dirent2.h"
+#else
+#ifdef NO_DIRENT_H
+#   include "../compat/dirent.h"
+#else
+#   include <dirent.h>
+#endif
+#endif
+
+/*
+ *---------------------------------------------------------------------------
+ * Parameterize for 64-bit filesystem support.
+ *---------------------------------------------------------------------------
+ */
+
+#ifdef HAVE_STRUCT_DIRENT64
+typedef struct dirent64		Tcl_DirEntry;
+#   define TclOSreaddir		readdir64
+#else
+typedef struct dirent		Tcl_DirEntry;
+#   define TclOSreaddir		readdir
+#endif
+#ifdef HAVE_DIR64
+typedef DIR64			TclDIR;
+#   define TclOSopendir		opendir64
+#   define TclOSrewinddir	rewinddir64
+#   define TclOSclosedir	closedir64
+#else
+typedef DIR			TclDIR;
+#   define TclOSopendir		opendir
+#   define TclOSrewinddir	rewinddir
+#   define TclOSclosedir	closedir
+#endif
+
+#ifdef HAVE_TYPE_OFF64_T
+typedef off64_t		Tcl_SeekOffset;
+#   define TclOSseek		lseek64
+#   define TclOSopen		open64
+#else
+typedef off_t		Tcl_SeekOffset;
+#   define TclOSseek		lseek
+#   define TclOSopen		open
+#endif
+
+#ifdef __CYGWIN__
+
+    /* Make some symbols available without including <windows.h> */
+#   define DWORD unsigned int
+#   define CP_UTF8 65001
+#   define GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS 0x00000004
+#   define HANDLE void *
+#   define HINSTANCE void *
+#   define SOCKET unsigned int
+#   define WSAEWOULDBLOCK 10035
+    typedef unsigned short WCHAR;
+    __declspec(dllimport) extern __stdcall int GetModuleHandleExW(unsigned int, const char *, void *);
+    __declspec(dllimport) extern __stdcall int GetModuleFileNameW(void *, const char *, int);
+    __declspec(dllimport) extern __stdcall int WideCharToMultiByte(int, int, const void *, int,
+	    char *, int, const char *, void *);
+    __declspec(dllimport) extern __stdcall int MultiByteToWideChar(int, int, const char *, int,
+	    WCHAR *, int);
+    __declspec(dllimport) extern __stdcall void OutputDebugStringW(const WCHAR *);
+    __declspec(dllimport) extern __stdcall int IsDebuggerPresent();
+    __declspec(dllimport) extern __stdcall int GetLastError();
+    __declspec(dllimport) extern __stdcall int GetFileAttributesW(const WCHAR *);
+    __declspec(dllimport) extern __stdcall int SetFileAttributesW(const WCHAR *, int);
+
+    __declspec(dllimport) extern int cygwin_conv_path(int, const void *, void *, int);
+/* On Cygwin, the environment is imported from the Cygwin DLL. */
+#ifndef __x86_64__
+#   define environ __cygwin_environ
+    extern char **__cygwin_environ;
+#endif
+#   define timezone _timezone
+    extern int TclOSstat(const char *name, void *statBuf);
+    extern int TclOSlstat(const char *name, void *statBuf);
+#elif defined(HAVE_STRUCT_STAT64) && !defined(__APPLE__)
+#   define TclOSstat		stat64
+#   define TclOSlstat		lstat64
+#else
+#   define TclOSstat		stat
+#   define TclOSlstat		lstat
+#endif
+
+/*
+ *---------------------------------------------------------------------------
+ * Miscellaneous includes that might be missing.
+ *---------------------------------------------------------------------------
+ */
+
+#include <sys/file.h>
+#ifdef HAVE_SYS_SELECT_H
+#   include <sys/select.h>
+#endif
+#include <sys/stat.h>
+#ifdef TIME_WITH_SYS_TIME
+#   include <sys/time.h>
+#   include <time.h>
+#else
+#ifdef HAVE_SYS_TIME_H
+#   include <sys/time.h>
+#else
+#   include <time.h>
+#endif
+#endif
+#ifndef NO_SYS_WAIT_H
+#   include <sys/wait.h>
+#endif
+#ifdef HAVE_INTTYPES_H
+#   include <inttypes.h>
+#endif
+#include <limits.h>
+#ifdef HAVE_STDINT_H
+#   include <stdint.h>
+#endif
+#ifdef HAVE_UNISTD_H
+#   include <unistd.h>
+#else
+#   include "../compat/unistd.h"
+#endif
+
+extern int TclUnixSetBlockingMode(int fd, int mode);
+
+#include <utime.h>
+
+/*
+ *---------------------------------------------------------------------------
+ * Socket support stuff: This likely needs more work to parameterize for each
+ * system.
+ *---------------------------------------------------------------------------
+ */
+
+#include <sys/socket.h>		/* struct sockaddr, SOCK_STREAM, ... */
+#ifndef NO_UNAME
+#   include <sys/utsname.h>	/* uname system call. */
+#endif
+#include <netinet/in.h>		/* struct in_addr, struct sockaddr_in */
+#include <arpa/inet.h>		/* inet_ntoa() */
+#include <netdb.h>		/* getaddrinfo() */
+#ifdef NEED_FAKE_RFC2553
+# include "../compat/fake-rfc2553.h"
+#endif
+
+/*
+ *---------------------------------------------------------------------------
+ * Some platforms (e.g. SunOS) don't define FLT_MAX and FLT_MIN, so we look
+ * for an alternative definition. If no other alternative is available we use
+ * a reasonable guess.
+ *---------------------------------------------------------------------------
+ */
+
+#ifndef NO_FLOAT_H
+#   include <float.h>
+#else
+#ifndef NO_VALUES_H
+#   include <values.h>
+#endif
+#endif
+
+#ifndef FLT_MAX
+#   ifdef MAXFLOAT
+#	define FLT_MAX	MAXFLOAT
+#   else
+#	define FLT_MAX	3.402823466E+38F
+#   endif
+#endif
+#ifndef FLT_MIN
+#   ifdef MINFLOAT
+#	define FLT_MIN	MINFLOAT
+#   else
+#	define FLT_MIN	1.175494351E-38F
+#   endif
+#endif
+
+/*
+ *---------------------------------------------------------------------------
+ * NeXT doesn't define O_NONBLOCK, so #define it here if necessary.
+ *---------------------------------------------------------------------------
+ */
+
+#ifndef O_NONBLOCK
+#   define O_NONBLOCK 0x80
+#endif
+
+/*
+ *---------------------------------------------------------------------------
+ * The type of the status returned by wait varies from UNIX system to UNIX
+ * system. The macro below defines it:
+ *---------------------------------------------------------------------------
+ */
+
+#ifdef _AIX
+#   define WAIT_STATUS_TYPE	pid_t
+#else
+#ifndef NO_UNION_WAIT
+#   define WAIT_STATUS_TYPE	union wait
+#else
+#   define WAIT_STATUS_TYPE	int
+#endif
+#endif
+
+/*
+ *---------------------------------------------------------------------------
+ * Supply definitions for macros to query wait status, if not already defined
+ * in header files above.
+ *---------------------------------------------------------------------------
+ */
+
+#ifndef WIFEXITED
+#   define WIFEXITED(stat)	(((*((int *) &(stat))) & 0xff) == 0)
+#endif
+
+#ifndef WEXITSTATUS
+#   define WEXITSTATUS(stat)	(((*((int *) &(stat))) >> 8) & 0xff)
+#endif
+
+#ifndef WIFSIGNALED
+#   define WIFSIGNALED(stat) \
+	(((*((int *) &(stat)))) && ((*((int *) &(stat))) \
+		== ((*((int *) &(stat))) & 0x00ff)))
+#endif
+
+#ifndef WTERMSIG
+#   define WTERMSIG(stat)	((*((int *) &(stat))) & 0x7f)
+#endif
+
+#ifndef WIFSTOPPED
+#   define WIFSTOPPED(stat)	(((*((int *) &(stat))) & 0xff) == 0177)
+#endif
+
+#ifndef WSTOPSIG
+#   define WSTOPSIG(stat)	(((*((int *) &(stat))) >> 8) & 0xff)
+#endif
+
+/*
+ *---------------------------------------------------------------------------
+ * Define constants for waitpid() system call if they aren't defined by a
+ * system header file.
+ *---------------------------------------------------------------------------
+ */
+
+#ifndef WNOHANG
+#   define WNOHANG 1
+#endif
+#ifndef WUNTRACED
+#   define WUNTRACED 2
+#endif
+
+/*
+ *---------------------------------------------------------------------------
+ * Supply macros for seek offsets, if they're not already provided by an
+ * include file.
+ *---------------------------------------------------------------------------
+ */
+
+#ifndef SEEK_SET
+#   define SEEK_SET 0
+#endif
+#ifndef SEEK_CUR
+#   define SEEK_CUR 1
+#endif
+#ifndef SEEK_END
+#   define SEEK_END 2
+#endif
+
+/*
+ *---------------------------------------------------------------------------
+ * The stuff below is needed by the "time" command. If this system has no
+ * gettimeofday call, then must use times() instead.
+ *---------------------------------------------------------------------------
+ */
+
+#ifdef NO_GETTOD
+#   include <sys/times.h>
+#else
+#   ifdef HAVE_BSDGETTIMEOFDAY
+#	define gettimeofday BSDgettimeofday
+#   endif
+#endif
+
+#ifdef GETTOD_NOT_DECLARED
+extern int	gettimeofday(struct timeval *tp,
+			    struct timezone *tzp);
+#endif
+
+/*
+ *---------------------------------------------------------------------------
+ * Define access mode constants if they aren't already defined.
+ *---------------------------------------------------------------------------
+ */
+
+#ifndef F_OK
+#   define F_OK		00
+#endif
+#ifndef X_OK
+#   define X_OK		01
+#endif
+#ifndef W_OK
+#   define W_OK		02
+#endif
+#ifndef R_OK
+#   define R_OK		04
+#endif
+
+/*
+ *---------------------------------------------------------------------------
+ * Define FD_CLOEEXEC (the close-on-exec flag bit) if it isn't already
+ * defined.
+ *---------------------------------------------------------------------------
+ */
+
+#ifndef FD_CLOEXEC
+#   define FD_CLOEXEC	1
+#endif
+
+/*
+ *---------------------------------------------------------------------------
+ * On systems without symbolic links (i.e. S_IFLNK isn't defined) define
+ * "lstat" to use "stat" instead.
+ *---------------------------------------------------------------------------
+ */
+
+#ifndef S_IFLNK
+#   undef TclOSlstat
+#   define lstat	stat
+#   define lstat64	stat64
+#   define TclOSlstat	TclOSstat
+#endif
+
+/*
+ *---------------------------------------------------------------------------
+ * Define macros to query file type bits, if they're not already defined.
+ *---------------------------------------------------------------------------
+ */
+
+#ifndef S_ISREG
+#   ifdef S_IFREG
+#	define S_ISREG(m)	(((m) & S_IFMT) == S_IFREG)
+#   else
+#	define S_ISREG(m)	0
+#   endif
+#endif /* !S_ISREG */
+#ifndef S_ISDIR
+#   ifdef S_IFDIR
+#	define S_ISDIR(m)	(((m) & S_IFMT) == S_IFDIR)
+#   else
+#	define S_ISDIR(m)	0
+#   endif
+#endif /* !S_ISDIR */
+#ifndef S_ISCHR
+#   ifdef S_IFCHR
+#	define S_ISCHR(m)	(((m) & S_IFMT) == S_IFCHR)
+#   else
+#	define S_ISCHR(m)	0
+#   endif
+#endif /* !S_ISCHR */
+
+#ifndef S_ISBLK
+#   ifdef S_IFBLK
+#	define S_ISBLK(m)	(((m) & S_IFMT) == S_IFBLK)
+#   else
+#	define S_ISBLK(m)	0
+#   endif
+#endif /* !S_ISBLK */
+
+#ifndef S_ISFIFO
+#   ifdef S_IFIFO
+#	define S_ISFIFO(m)	(((m) & S_IFMT) == S_IFIFO)
+#   else
+#	define S_ISFIFO(m)	0
+#   endif
+#endif /* !S_ISFIFO */
+
+#ifndef S_ISLNK
+#   ifdef S_IFLNK
+#	define S_ISLNK(m)	(((m) & S_IFMT) == S_IFLNK)
+#   else
+#	define S_ISLNK(m)	0
+#   endif
+#endif /* !S_ISLNK */
+
+#ifndef S_ISSOCK
+#   ifdef S_IFSOCK
+#	define S_ISSOCK(m)	(((m) & S_IFMT) == S_IFSOCK)
+#   else
+#	define S_ISSOCK(m)	0
+#   endif
+#endif /* !S_ISSOCK */
+
+/*
+ *---------------------------------------------------------------------------
+ * Make sure that MAXPATHLEN and MAXNAMLEN are defined.
+ *---------------------------------------------------------------------------
+ */
+
+#ifndef MAXPATHLEN
+#   ifdef PATH_MAX
+#	define MAXPATHLEN	PATH_MAX
+#   else
+#	define MAXPATHLEN	2048
+#   endif
+#endif
+
+#ifndef MAXNAMLEN
+#   ifdef NAME_MAX
+#	define MAXNAMLEN	NAME_MAX
+#   else
+#	define MAXNAMLEN	255
+#   endif
+#endif
+
+/*
+ *---------------------------------------------------------------------------
+ * The following macro defines the type of the mask arguments to select:
+ *---------------------------------------------------------------------------
+ */
+
+#ifndef NO_FD_SET
+#   define SELECT_MASK	fd_set
+#else /* NO_FD_SET */
+#   ifndef _AIX
+	typedef long	fd_mask;
+#   endif /* !AIX */
+#   if defined(_IBMR2)
+#	define SELECT_MASK	void
+#   else /* !defined(_IBMR2) */
+#	define SELECT_MASK	int
+#   endif /* defined(_IBMR2) */
+#endif /* !NO_FD_SET */
+
+/*
+ *---------------------------------------------------------------------------
+ * Define "NBBY" (number of bits per byte) if it's not already defined.
+ *---------------------------------------------------------------------------
+ */
+
+#ifndef NBBY
+#   define NBBY		8
+#endif
+
+/*
+ *---------------------------------------------------------------------------
+ * The following macro defines the number of fd_masks in an fd_set:
+ *---------------------------------------------------------------------------
+ */
+
+#ifndef FD_SETSIZE
+#   ifdef OPEN_MAX
+#	define FD_SETSIZE	OPEN_MAX
+#   else
+#	define FD_SETSIZE	256
+#   endif
+#endif /* FD_SETSIZE */
+
+#ifndef howmany
+#   define howmany(x, y)	(((x)+((y)-1))/(y))
+#endif /* !defined(howmany) */
+
+#ifndef NFDBITS
+#   define NFDBITS	NBBY*sizeof(fd_mask)
+#endif /* NFDBITS */
+
+#define MASK_SIZE	howmany(FD_SETSIZE, NFDBITS)
+
+/*
+ *---------------------------------------------------------------------------
+ * Not all systems declare the errno variable in errno.h. so this file does it
+ * explicitly. The list of system error messages also isn't generally declared
+ * in a header file anywhere.
+ *---------------------------------------------------------------------------
+ */
+
+#ifdef NO_ERRNO
+extern int errno;
+#endif /* NO_ERRNO */
+
+/*
+ *---------------------------------------------------------------------------
+ * Not all systems declare all the errors that Tcl uses! Provide some
+ * work-arounds...
+ *---------------------------------------------------------------------------
+ */
+
+#ifndef EOVERFLOW
+#   ifdef EFBIG
+#	define EOVERFLOW	EFBIG
+#   else /* !EFBIG */
+#	define EOVERFLOW	EINVAL
+#   endif /* EFBIG */
+#endif /* EOVERFLOW */
+
+/*
+ *---------------------------------------------------------------------------
+ * Variables provided by the C library:
+ *---------------------------------------------------------------------------
+ */
+
+#if defined(__APPLE__) && defined(__DYNAMIC__)
+#   include <crt_externs.h>
+#   define environ	(*_NSGetEnviron())
+#   define USE_PUTENV	1
+#else
+#   if defined(_sgi) || defined(__sgi)
+#	define environ	_environ
+#   endif
+extern char **		environ;
+#endif
+
+/*
+ *---------------------------------------------------------------------------
+ * Darwin specifc configure overrides.
+ *---------------------------------------------------------------------------
+ */
+
+#ifdef __APPLE__
+
+/*
+ *---------------------------------------------------------------------------
+ * Support for fat compiles: configure runs only once for multiple architectures
+ *---------------------------------------------------------------------------
+ */
+
+#   if defined(__LP64__) && defined (NO_COREFOUNDATION_64)
+#	undef HAVE_COREFOUNDATION
+#   endif /* __LP64__ && NO_COREFOUNDATION_64 */
+#   include <sys/cdefs.h>
+#   ifdef __DARWIN_UNIX03
+#	if __DARWIN_UNIX03
+#	    undef HAVE_PUTENV_THAT_COPIES
+#	else
+#	    define HAVE_PUTENV_THAT_COPIES	1
+#	endif
+#   endif /* __DARWIN_UNIX03 */
+
+/*
+ *---------------------------------------------------------------------------
+ * Include AvailabilityMacros.h here (when available) to ensure any symbolic
+ * MAC_OS_X_VERSION_* constants passed on the command line are translated.
+ *---------------------------------------------------------------------------
+ */
+
+#   ifdef HAVE_AVAILABILITYMACROS_H
+#	include <AvailabilityMacros.h>
+#   endif
+
+/*
+ *---------------------------------------------------------------------------
+ * Support for weak import.
+ *---------------------------------------------------------------------------
+ */
+
+#   ifdef HAVE_WEAK_IMPORT
+#	if !defined(HAVE_AVAILABILITYMACROS_H) || !defined(MAC_OS_X_VERSION_MIN_REQUIRED)
+#	    undef HAVE_WEAK_IMPORT
+#	else
+#	    ifndef WEAK_IMPORT_ATTRIBUTE
+#		define WEAK_IMPORT_ATTRIBUTE	__attribute__((weak_import))
+#	    endif
+#	endif
+#   endif /* HAVE_WEAK_IMPORT */
+
+/*
+ *---------------------------------------------------------------------------
+ * Support for MAC_OS_X_VERSION_MAX_ALLOWED define from AvailabilityMacros.h:
+ * only use API available in the indicated OS version or earlier.
+ *---------------------------------------------------------------------------
+ */
+
+#   ifdef MAC_OS_X_VERSION_MAX_ALLOWED
+#	if MAC_OS_X_VERSION_MAX_ALLOWED < 1050 && defined(__LP64__)
+#	    undef HAVE_COREFOUNDATION
+#	endif
+#	if MAC_OS_X_VERSION_MAX_ALLOWED < 1040
+#	    undef HAVE_OSSPINLOCKLOCK
+#	    undef HAVE_PTHREAD_ATFORK
+#	    undef HAVE_COPYFILE
+#	endif
+#	if MAC_OS_X_VERSION_MAX_ALLOWED < 1030
+#	    ifdef TCL_THREADS
+		/* prior to 10.3, realpath is not threadsafe, c.f. bug 711232 */
+#		define NO_REALPATH 1
+#	    endif
+#	    undef HAVE_LANGINFO
+#	endif
+#   endif /* MAC_OS_X_VERSION_MAX_ALLOWED */
+#   if defined(HAVE_COREFOUNDATION) && defined(__LP64__) && \
+	    defined(HAVE_WEAK_IMPORT) && MAC_OS_X_VERSION_MIN_REQUIRED < 1050
+#	warning "Weak import of 64-bit CoreFoundation is not supported, will not run on Mac OS X < 10.5."
+#   endif
+
+/*
+ *---------------------------------------------------------------------------
+ * At present, using vfork() instead of fork() causes execve() to fail
+ * intermittently on Darwin x86_64. rdar://4685553
+ *---------------------------------------------------------------------------
+ */
+
+#   if defined(__x86_64__) && !defined(FIXED_RDAR_4685553)
+#	undef USE_VFORK
+#   endif /* __x86_64__ */
+/* Workaround problems with vfork() when building with llvm-gcc-4.2 */
+#   if defined (__llvm__) && \
+	    (__GNUC__ > 4 || (__GNUC__ == 4 && (__GNUC_MINOR__ > 2 || \
+	    (__GNUC_MINOR__ == 2 && __GNUC_PATCHLEVEL__ > 0))))
+#	undef USE_VFORK
+#   endif /* __llvm__ */
+#endif /* __APPLE__ */
+
+/*
+ *---------------------------------------------------------------------------
+ * The following macros and declarations represent the interface between
+ * generic and unix-specific parts of Tcl. Some of the macros may override
+ * functions declared in tclInt.h.
+ *---------------------------------------------------------------------------
+ */
+
+/*
+ * The default platform eol translation on Unix is TCL_TRANSLATE_LF.
+ */
+
+#ifdef DJGPP
+#define	TCL_PLATFORM_TRANSLATION	TCL_TRANSLATE_CRLF
+typedef int socklen_t;
+#else
+#define	TCL_PLATFORM_TRANSLATION	TCL_TRANSLATE_LF
+#endif
+
+/*
+ *---------------------------------------------------------------------------
+ * The following macros have trivial definitions, allowing generic code to
+ * address platform-specific issues.
+ *---------------------------------------------------------------------------
+ */
+
+#define TclpReleaseFile(file)	/* Nothing. */
+
+/*
+ *---------------------------------------------------------------------------
+ * The following defines wrap the system memory allocation routines.
+ *---------------------------------------------------------------------------
+ */
+
+#define TclpSysAlloc(size, isBin)	malloc((size_t)(size))
+#define TclpSysFree(ptr)		free((char *)(ptr))
+#define TclpSysRealloc(ptr, size)	realloc((char *)(ptr), (size_t)(size))
+
+/*
+ *---------------------------------------------------------------------------
+ * The following macros and declaration wrap the C runtime library functions.
+ *---------------------------------------------------------------------------
+ */
+
+#define TclpExit	exit
+
+#ifdef TCL_THREADS
+#   include <pthread.h>
+#endif /* TCL_THREADS */
+
+/* FIXME - Hyper-enormous platform assumption! */
+#ifndef AF_INET6
+#   define AF_INET6	10
+#endif
+
+/*
+ *---------------------------------------------------------------------------
+ * Set of MT-safe implementations of some known-to-be-MT-unsafe library calls.
+ * Instead of returning pointers to the static storage, those return pointers
+ * to the TSD data.
+ *---------------------------------------------------------------------------
+ */
+
+#include <pwd.h>
+#include <grp.h>
+
+extern struct passwd *	TclpGetPwNam(const char *name);
+extern struct group *	TclpGetGrNam(const char *name);
+extern struct passwd *	TclpGetPwUid(uid_t uid);
+extern struct group *	TclpGetGrGid(gid_t gid);
+extern struct hostent *	TclpGetHostByName(const char *name);
+extern struct hostent *	TclpGetHostByAddr(const char *addr,
+				    int length, int type);
+extern void *TclpMakeTcpClientChannelMode(
+				    void *tcpSocket, int mode);
+
+#endif /* _TCLUNIXPORT */
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/tcl8.6/unix/tclUnixSock.c b/tcl8.6/unix/tclUnixSock.c
new file mode 100644
index 0000000..90c72c0
--- /dev/null
+++ b/tcl8.6/unix/tclUnixSock.c
@@ -0,0 +1,1733 @@
+/*
+ * tclUnixSock.c --
+ *
+ *	This file contains Unix-specific socket related code.
+ *
+ * Copyright (c) 1995 Sun Microsystems, Inc.
+ *
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ */
+
+#include "tclInt.h"
+
+/*
+ * Helper macros to make parts of this file clearer. The macros do exactly
+ * what they say on the tin. :-) They also only ever refer to their arguments
+ * once, and so can be used without regard to side effects.
+ */
+
+#define SET_BITS(var, bits)	((var) |= (bits))
+#define CLEAR_BITS(var, bits)	((var) &= ~(bits))
+#define GOT_BITS(var, bits)     (((var) & (bits)) != 0)
+
+/* "sock" + a pointer in hex + \0 */
+#define SOCK_CHAN_LENGTH        (4 + sizeof(void *) * 2 + 1)
+#define SOCK_TEMPLATE           "sock%lx"
+
+#undef SOCKET   /* Possible conflict with win32 SOCKET */
+
+/*
+ * This is needed to comply with the strict aliasing rules of GCC, but it also
+ * simplifies casting between the different sockaddr types.
+ */
+
+typedef union {
+    struct sockaddr sa;
+    struct sockaddr_in sa4;
+    struct sockaddr_in6 sa6;
+    struct sockaddr_storage sas;
+} address;
+
+/*
+ * This structure describes per-instance state of a tcp based channel.
+ */
+
+typedef struct TcpState TcpState;
+
+typedef struct TcpFdList {
+    TcpState *statePtr;
+    int fd;
+    struct TcpFdList *next;
+} TcpFdList;
+
+struct TcpState {
+    Tcl_Channel channel;	/* Channel associated with this file. */
+    TcpFdList fds;		/* The file descriptors of the sockets. */
+    int flags;			/* ORed combination of the bitfields defined
+				 * below. */
+    int interest;		/* Event types of interest */
+
+    /*
+     * Only needed for server sockets
+     */
+
+    Tcl_TcpAcceptProc *acceptProc;
+                                /* Proc to call on accept. */
+    ClientData acceptProcData;  /* The data for the accept proc. */
+
+    /*
+     * Only needed for client sockets
+     */
+
+    struct addrinfo *addrlist;	/* Addresses to connect to. */
+    struct addrinfo *addr;	/* Iterator over addrlist. */
+    struct addrinfo *myaddrlist;/* Local address. */
+    struct addrinfo *myaddr;	/* Iterator over myaddrlist. */
+    int filehandlers;           /* Caches FileHandlers that get set up while
+                                 * an async socket is not yet connected. */
+    int connectError;           /* Cache SO_ERROR of async socket. */
+    int cachedBlocking;         /* Cache blocking mode of async socket. */
+};
+
+/*
+ * These bits may be ORed together into the "flags" field of a TcpState
+ * structure.
+ */
+
+#define TCP_NONBLOCKING		(1<<0)	/* Socket with non-blocking I/O */
+#define TCP_ASYNC_CONNECT	(1<<1)	/* Async connect in progress. */
+#define TCP_ASYNC_PENDING	(1<<4)	/* TcpConnect was called to
+					 * process an async connect. This
+					 * flag indicates that reentry is
+					 * still pending */
+#define TCP_ASYNC_FAILED	(1<<5)	/* An async connect finally failed */
+
+/*
+ * The following defines the maximum length of the listen queue. This is the
+ * number of outstanding yet-to-be-serviced requests for a connection on a
+ * server socket, more than this number of outstanding requests and the
+ * connection request will fail.
+ */
+
+#ifndef SOMAXCONN
+#   define SOMAXCONN	100
+#elif (SOMAXCONN < 100)
+#   undef  SOMAXCONN
+#   define SOMAXCONN	100
+#endif /* SOMAXCONN < 100 */
+
+/*
+ * The following defines how much buffer space the kernel should maintain for
+ * a socket.
+ */
+
+#define SOCKET_BUFSIZE	4096
+
+/*
+ * Static routines for this file:
+ */
+
+static int		TcpConnect(Tcl_Interp *interp, TcpState *state);
+static void		TcpAccept(ClientData data, int mask);
+static int		TcpBlockModeProc(ClientData data, int mode);
+static int		TcpCloseProc(ClientData instanceData,
+			    Tcl_Interp *interp);
+static int		TcpClose2Proc(ClientData instanceData,
+			    Tcl_Interp *interp, int flags);
+static int		TcpGetHandleProc(ClientData instanceData,
+			    int direction, ClientData *handlePtr);
+static int		TcpGetOptionProc(ClientData instanceData,
+			    Tcl_Interp *interp, const char *optionName,
+			    Tcl_DString *dsPtr);
+static int		TcpInputProc(ClientData instanceData, char *buf,
+			    int toRead, int *errorCode);
+static int		TcpOutputProc(ClientData instanceData,
+			    const char *buf, int toWrite, int *errorCode);
+static void		TcpWatchProc(ClientData instanceData, int mask);
+static int		WaitForConnect(TcpState *statePtr, int *errorCodePtr);
+static void		WrapNotify(ClientData clientData, int mask);
+
+/*
+ * This structure describes the channel type structure for TCP socket
+ * based IO:
+ */
+
+static const Tcl_ChannelType tcpChannelType = {
+    "tcp",			/* Type name. */
+    TCL_CHANNEL_VERSION_5,	/* v5 channel */
+    TcpCloseProc,		/* Close proc. */
+    TcpInputProc,		/* Input proc. */
+    TcpOutputProc,		/* Output proc. */
+    NULL,			/* Seek proc. */
+    NULL,			/* Set option proc. */
+    TcpGetOptionProc,		/* Get option proc. */
+    TcpWatchProc,		/* Initialize notifier. */
+    TcpGetHandleProc,		/* Get OS handles out of channel. */
+    TcpClose2Proc,		/* Close2 proc. */
+    TcpBlockModeProc,		/* Set blocking or non-blocking mode.*/
+    NULL,			/* flush proc. */
+    NULL,			/* handler proc. */
+    NULL,			/* wide seek proc. */
+    NULL,			/* thread action proc. */
+    NULL			/* truncate proc. */
+};
+
+/*
+ * The following variable holds the network name of this host.
+ */
+
+static TclInitProcessGlobalValueProc InitializeHostName;
+static ProcessGlobalValue hostName =
+	{0, 0, NULL, NULL, InitializeHostName, NULL, NULL};
+
+#if 0
+/* printf debugging */
+void
+printaddrinfo(
+    struct addrinfo *addrlist,
+    char *prefix)
+{
+    char host[NI_MAXHOST], port[NI_MAXSERV];
+    struct addrinfo *ai;
+
+    for (ai = addrlist; ai != NULL; ai = ai->ai_next) {
+	getnameinfo(ai->ai_addr, ai->ai_addrlen,
+		host, sizeof(host), port, sizeof(port),
+		NI_NUMERICHOST|NI_NUMERICSERV);
+	fprintf(stderr,"%s: %s:%s\n", prefix, host, port);
+    }
+}
+#endif
+/*
+ * ----------------------------------------------------------------------
+ *
+ * InitializeHostName --
+ *
+ * 	This routine sets the process global value of the name of the local
+ * 	host on which the process is running.
+ *
+ * Results:
+ *	None.
+ *
+ * ----------------------------------------------------------------------
+ */
+
+static void
+InitializeHostName(
+    char **valuePtr,
+    int *lengthPtr,
+    Tcl_Encoding *encodingPtr)
+{
+    const char *native = NULL;
+
+#ifndef NO_UNAME
+    struct utsname u;
+    struct hostent *hp;
+
+    memset(&u, (int) 0, sizeof(struct utsname));
+    if (uname(&u) > -1) {				/* INTL: Native. */
+        hp = TclpGetHostByName(u.nodename);		/* INTL: Native. */
+	if (hp == NULL) {
+	    /*
+	     * Sometimes the nodename is fully qualified, but gets truncated
+	     * as it exceeds SYS_NMLN. See if we can just get the immediate
+	     * nodename and get a proper answer that way.
+	     */
+
+	    char *dot = strchr(u.nodename, '.');
+
+	    if (dot != NULL) {
+		char *node = ckalloc(dot - u.nodename + 1);
+
+		memcpy(node, u.nodename, (size_t) (dot - u.nodename));
+		node[dot - u.nodename] = '\0';
+		hp = TclpGetHostByName(node);
+		ckfree(node);
+	    }
+	}
+        if (hp != NULL) {
+	    native = hp->h_name;
+        } else {
+	    native = u.nodename;
+        }
+    }
+    if (native == NULL) {
+	native = tclEmptyStringRep;
+    }
+#else /* !NO_UNAME */
+    /*
+     * Uname doesn't exist; try gethostname instead.
+     *
+     * There is no portable macro for the maximum length of host names
+     * returned by gethostbyname(). We should only trust SYS_NMLN if it is at
+     * least 255 + 1 bytes to comply with DNS host name limits.
+     *
+     * Note: SYS_NMLN is a restriction on "uname" not on gethostbyname!
+     *
+     * For example HP-UX 10.20 has SYS_NMLN == 9, while gethostbyname() can
+     * return a fully qualified name from DNS of up to 255 bytes.
+     *
+     * Fix suggested by Viktor Dukhovni (viktor@esm.com)
+     */
+
+#    if defined(SYS_NMLN) && (SYS_NMLEN >= 256)
+    char buffer[SYS_NMLEN];
+#    else
+    char buffer[256];
+#    endif
+
+    if (gethostname(buffer, sizeof(buffer)) > -1) {	/* INTL: Native. */
+	native = buffer;
+    }
+#endif /* NO_UNAME */
+
+    *encodingPtr = Tcl_GetEncoding(NULL, NULL);
+    *lengthPtr = strlen(native);
+    *valuePtr = ckalloc(*lengthPtr + 1);
+    memcpy(*valuePtr, native, (size_t)(*lengthPtr) + 1);
+}
+
+/*
+ * ----------------------------------------------------------------------
+ *
+ * Tcl_GetHostName --
+ *
+ *	Returns the name of the local host.
+ *
+ * Results:
+ *	A string containing the network name for this machine, or an empty
+ *	string if we can't figure out the name. The caller must not modify or
+ *	free this string.
+ *
+ * Side effects:
+ *	Caches the name to return for future calls.
+ *
+ * ----------------------------------------------------------------------
+ */
+
+const char *
+Tcl_GetHostName(void)
+{
+    return Tcl_GetString(TclGetProcessGlobalValue(&hostName));
+}
+
+/*
+ * ----------------------------------------------------------------------
+ *
+ * TclpHasSockets --
+ *
+ *	Detect if sockets are available on this platform.
+ *
+ * Results:
+ *	Returns TCL_OK.
+ *
+ * Side effects:
+ *	None.
+ *
+ * ----------------------------------------------------------------------
+ */
+
+int
+TclpHasSockets(
+    Tcl_Interp *interp)		/* Not used. */
+{
+    return TCL_OK;
+}
+
+/*
+ * ----------------------------------------------------------------------
+ *
+ * TclpFinalizeSockets --
+ *
+ *	Performs per-thread socket subsystem finalization.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	None.
+ *
+ * ----------------------------------------------------------------------
+ */
+
+void
+TclpFinalizeSockets(void)
+{
+    return;
+}
+
+/*
+ * ----------------------------------------------------------------------
+ *
+ * TcpBlockModeProc --
+ *
+ *	This function is invoked by the generic IO level to set blocking and
+ *	nonblocking mode on a TCP socket based channel.
+ *
+ * Results:
+ *	0 if successful, errno when failed.
+ *
+ * Side effects:
+ *	Sets the device into blocking or nonblocking mode.
+ *
+ * ----------------------------------------------------------------------
+ */
+
+	/* ARGSUSED */
+static int
+TcpBlockModeProc(
+    ClientData instanceData,	/* Socket state. */
+    int mode)			/* The mode to set. Can be one of
+				 * TCL_MODE_BLOCKING or
+				 * TCL_MODE_NONBLOCKING. */
+{
+    TcpState *statePtr = instanceData;
+
+    if (mode == TCL_MODE_BLOCKING) {
+	CLEAR_BITS(statePtr->flags, TCP_NONBLOCKING);
+    } else {
+	SET_BITS(statePtr->flags, TCP_NONBLOCKING);
+    }
+    if (GOT_BITS(statePtr->flags, TCP_ASYNC_CONNECT)) {
+        statePtr->cachedBlocking = mode;
+        return 0;
+    }
+    if (TclUnixSetBlockingMode(statePtr->fds.fd, mode) < 0) {
+	return errno;
+    }
+    return 0;
+}
+
+/*
+ * ----------------------------------------------------------------------
+ *
+ * WaitForConnect --
+ *
+ *	Check the state of an async connect process. If a connection attempt
+ *	terminated, process it, which may finalize it or may start the next
+ *	attempt. If a connect error occures, it is saved in
+ *	statePtr->connectError to be reported by 'fconfigure -error'.
+ *
+ *	There are two modes of operation, defined by errorCodePtr:
+ *	 *  non-NULL: Called by explicite read/write command. Blocks if the
+ *	    socket is blocking.
+ *	    May return two error codes:
+ *	     *	EWOULDBLOCK: if connect is still in progress
+ *	     *	ENOTCONN: if connect failed. This would be the error message
+ *		of a rect or sendto syscall so this is emulated here.
+ *	 *  NULL: Called by a backround operation. Do not block and do not
+ *	    return any error code.
+ *
+ * Results:
+ * 	0 if the connection has completed, -1 if still in progress or there is
+ * 	an error.
+ *
+ * Side effects:
+ *	Processes socket events off the system queue. May process
+ *	asynchroneous connects.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+WaitForConnect(
+    TcpState *statePtr,		/* State of the socket. */
+    int *errorCodePtr)
+{
+    int timeout;
+
+    /*
+     * Check if an async connect failed already and error reporting is
+     * demanded, return the error ENOTCONN
+     */
+
+    if (errorCodePtr != NULL && GOT_BITS(statePtr->flags, TCP_ASYNC_FAILED)) {
+	*errorCodePtr = ENOTCONN;
+	return -1;
+    }
+
+    /*
+     * Check if an async connect is running. If not return ok
+     */
+
+    if (!GOT_BITS(statePtr->flags, TCP_ASYNC_PENDING)) {
+	return 0;
+    }
+
+    if (errorCodePtr == NULL || GOT_BITS(statePtr->flags, TCP_NONBLOCKING)) {
+        timeout = 0;
+    } else {
+        timeout = -1;
+    }
+    do {
+        if (TclUnixWaitForFile(statePtr->fds.fd,
+                TCL_WRITABLE | TCL_EXCEPTION, timeout) != 0) {
+            TcpConnect(NULL, statePtr);
+        }
+
+        /*
+         * Do this only once in the nonblocking case and repeat it until the
+         * socket is final when blocking.
+         */
+    } while (timeout == -1 && GOT_BITS(statePtr->flags, TCP_ASYNC_CONNECT));
+
+    if (errorCodePtr != NULL) {
+        if (GOT_BITS(statePtr->flags, TCP_ASYNC_PENDING)) {
+            *errorCodePtr = EAGAIN;
+            return -1;
+        } else if (statePtr->connectError != 0) {
+            *errorCodePtr = ENOTCONN;
+            return -1;
+        }
+    }
+    return 0;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TcpInputProc --
+ *
+ *	This function is invoked by the generic IO level to read input from a
+ *	TCP socket based channel.
+ *
+ *	NOTE: We cannot share code with FilePipeInputProc because here we must
+ *	use recv to obtain the input from the channel, not read.
+ *
+ * Results:
+ *	The number of bytes read is returned or -1 on error. An output
+ *	argument contains the POSIX error code on error, or zero if no error
+ *	occurred.
+ *
+ * Side effects:
+ *	Reads input from the input device of the channel.
+ *
+ *----------------------------------------------------------------------
+ */
+
+	/* ARGSUSED */
+static int
+TcpInputProc(
+    ClientData instanceData,	/* Socket state. */
+    char *buf,			/* Where to store data read. */
+    int bufSize,		/* How much space is available in the
+				 * buffer? */
+    int *errorCodePtr)		/* Where to store error code. */
+{
+    TcpState *statePtr = instanceData;
+    int bytesRead;
+
+    *errorCodePtr = 0;
+    if (WaitForConnect(statePtr, errorCodePtr) != 0) {
+	return -1;
+    }
+    bytesRead = recv(statePtr->fds.fd, buf, (size_t) bufSize, 0);
+    if (bytesRead > -1) {
+	return bytesRead;
+    }
+    if (errno == ECONNRESET) {
+	/*
+	 * Turn ECONNRESET into a soft EOF condition.
+	 */
+
+	return 0;
+    }
+    *errorCodePtr = errno;
+    return -1;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TcpOutputProc --
+ *
+ *	This function is invoked by the generic IO level to write output to a
+ *	TCP socket based channel.
+ *
+ *	NOTE: We cannot share code with FilePipeOutputProc because here we
+ *	must use send, not write, to get reliable error reporting.
+ *
+ * Results:
+ *	The number of bytes written is returned. An output argument is set to
+ *	a POSIX error code if an error occurred, or zero.
+ *
+ * Side effects:
+ *	Writes output on the output device of the channel.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+TcpOutputProc(
+    ClientData instanceData,	/* Socket state. */
+    const char *buf,		/* The data buffer. */
+    int toWrite,		/* How many bytes to write? */
+    int *errorCodePtr)		/* Where to store error code. */
+{
+    TcpState *statePtr = instanceData;
+    int written;
+
+    *errorCodePtr = 0;
+    if (WaitForConnect(statePtr, errorCodePtr) != 0) {
+	return -1;
+    }
+    written = send(statePtr->fds.fd, buf, (size_t) toWrite, 0);
+
+    if (written > -1) {
+	return written;
+    }
+    *errorCodePtr = errno;
+    return -1;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TcpCloseProc --
+ *
+ *	This function is invoked by the generic IO level to perform
+ *	channel-type-specific cleanup when a TCP socket based channel is
+ *	closed.
+ *
+ * Results:
+ *	0 if successful, the value of errno if failed.
+ *
+ * Side effects:
+ *	Closes the socket of the channel.
+ *
+ *----------------------------------------------------------------------
+ */
+
+	/* ARGSUSED */
+static int
+TcpCloseProc(
+    ClientData instanceData,	/* The socket to close. */
+    Tcl_Interp *interp)		/* For error reporting - unused. */
+{
+    TcpState *statePtr = instanceData;
+    int errorCode = 0;
+    TcpFdList *fds;
+
+    /*
+     * Delete a file handler that may be active for this socket if this is a
+     * server socket - the file handler was created automatically by Tcl as
+     * part of the mechanism to accept new client connections. Channel
+     * handlers are already deleted in the generic IO channel closing code
+     * that called this function, so we do not have to delete them here.
+     */
+
+    for (fds = &statePtr->fds; fds != NULL; fds = fds->next) {
+	if (fds->fd < 0) {
+	    continue;
+	}
+	Tcl_DeleteFileHandler(fds->fd);
+	if (close(fds->fd) < 0) {
+	    errorCode = errno;
+	}
+
+    }
+    fds = statePtr->fds.next;
+    while (fds != NULL) {
+	TcpFdList *next = fds->next;
+
+	ckfree(fds);
+	fds = next;
+    }
+    if (statePtr->addrlist != NULL) {
+        freeaddrinfo(statePtr->addrlist);
+    }
+    if (statePtr->myaddrlist != NULL) {
+        freeaddrinfo(statePtr->myaddrlist);
+    }
+    ckfree(statePtr);
+    return errorCode;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TcpClose2Proc --
+ *
+ *	This function is called by the generic IO level to perform the channel
+ *	type specific part of a half-close: namely, a shutdown() on a socket.
+ *
+ * Results:
+ *	0 if successful, the value of errno if failed.
+ *
+ * Side effects:
+ *	Shuts down one side of the socket.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+TcpClose2Proc(
+    ClientData instanceData,	/* The socket to close. */
+    Tcl_Interp *interp,		/* For error reporting. */
+    int flags)			/* Flags that indicate which side to close. */
+{
+    TcpState *statePtr = instanceData;
+    int errorCode = 0;
+    int sd;
+
+    /*
+     * Shutdown the OS socket handle.
+     */
+
+    switch(flags) {
+    case TCL_CLOSE_READ:
+        sd = SHUT_RD;
+        break;
+    case TCL_CLOSE_WRITE:
+        sd = SHUT_WR;
+        break;
+    default:
+        if (interp) {
+            Tcl_SetObjResult(interp, Tcl_NewStringObj(
+                    "socket close2proc called bidirectionally", -1));
+        }
+        return TCL_ERROR;
+    }
+    if (shutdown(statePtr->fds.fd,sd) < 0) {
+	errorCode = errno;
+    }
+
+    return errorCode;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TcpHostPortList --
+ *
+ *	This function is called by the -gethostname and -getpeername switches
+ *	of TcpGetOptionProc() to add three list elements with the textual
+ *	representation of the given address to the given DString.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Adds three elements do dsPtr
+ *
+ *----------------------------------------------------------------------
+ */
+
+#ifndef NEED_FAKE_RFC2553
+#if defined (__clang__) || ((__GNUC__)  && ((__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ > 5))))
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wstrict-aliasing"
+#endif
+static inline int
+IPv6AddressNeedsNumericRendering(
+    struct in6_addr addr)
+{
+    if (IN6_ARE_ADDR_EQUAL(&addr, &in6addr_any)) {
+        return 1;
+    }
+
+    /*
+     * The IN6_IS_ADDR_V4MAPPED macro has a problem with aliasing warnings on
+     * at least some versions of OSX.
+     */
+
+    if (!IN6_IS_ADDR_V4MAPPED(&addr)) {
+        return 0;
+    }
+
+    return (addr.s6_addr[12] == 0 && addr.s6_addr[13] == 0
+            && addr.s6_addr[14] == 0 && addr.s6_addr[15] == 0);
+}
+#if defined (__clang__) || ((__GNUC__)  && ((__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ > 5))))
+#pragma GCC diagnostic pop
+#endif
+#endif /* NEED_FAKE_RFC2553 */
+
+static void
+TcpHostPortList(
+    Tcl_Interp *interp,
+    Tcl_DString *dsPtr,
+    address addr,
+    socklen_t salen)
+{
+#define SUPPRESS_RDNS_VAR "::tcl::unsupported::noReverseDNS"
+    char host[NI_MAXHOST], nhost[NI_MAXHOST], nport[NI_MAXSERV];
+    int flags = 0;
+
+    getnameinfo(&addr.sa, salen, nhost, sizeof(nhost), nport, sizeof(nport),
+            NI_NUMERICHOST | NI_NUMERICSERV);
+    Tcl_DStringAppendElement(dsPtr, nhost);
+
+    /*
+     * We don't want to resolve INADDR_ANY and sin6addr_any; they can
+     * sometimes cause problems (and never have a name).
+     */
+
+    if (addr.sa.sa_family == AF_INET) {
+        if (addr.sa4.sin_addr.s_addr == INADDR_ANY) {
+            flags |= NI_NUMERICHOST;
+        }
+#ifndef NEED_FAKE_RFC2553
+    } else if (addr.sa.sa_family == AF_INET6) {
+        if (IPv6AddressNeedsNumericRendering(addr.sa6.sin6_addr)) {
+            flags |= NI_NUMERICHOST;
+        }
+#endif /* NEED_FAKE_RFC2553 */
+    }
+
+    /*
+     * Check if reverse DNS has been switched off globally.
+     */
+
+    if (interp != NULL &&
+            Tcl_GetVar2(interp, SUPPRESS_RDNS_VAR, NULL, 0) != NULL) {
+        flags |= NI_NUMERICHOST;
+    }
+    if (getnameinfo(&addr.sa, salen, host, sizeof(host), NULL, 0,
+            flags) == 0) {
+        /*
+         * Reverse mapping worked.
+         */
+
+        Tcl_DStringAppendElement(dsPtr, host);
+    } else {
+        /*
+         * Reverse mapping failed - use the numeric rep once more.
+         */
+
+        Tcl_DStringAppendElement(dsPtr, nhost);
+    }
+    Tcl_DStringAppendElement(dsPtr, nport);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TcpGetOptionProc --
+ *
+ *	Computes an option value for a TCP socket based channel, or a list of
+ *	all options and their values.
+ *
+ *	Note: This code is based on code contributed by John Haxby.
+ *
+ * Results:
+ *	A standard Tcl result. The value of the specified option or a list of
+ *	all options and their values is returned in the supplied DString. Sets
+ *	Error message if needed.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+TcpGetOptionProc(
+    ClientData instanceData,	/* Socket state. */
+    Tcl_Interp *interp,		/* For error reporting - can be NULL. */
+    const char *optionName,	/* Name of the option to retrieve the value
+				 * for, or NULL to get all options and their
+				 * values. */
+    Tcl_DString *dsPtr)		/* Where to store the computed value;
+				 * initialized by caller. */
+{
+    TcpState *statePtr = instanceData;
+    size_t len = 0;
+
+    WaitForConnect(statePtr, NULL);
+
+    if (optionName != NULL) {
+	len = strlen(optionName);
+    }
+
+    if ((len > 1) && (optionName[1] == 'e') &&
+	    (strncmp(optionName, "-error", len) == 0)) {
+	socklen_t optlen = sizeof(int);
+
+        if (GOT_BITS(statePtr->flags, TCP_ASYNC_CONNECT)) {
+            /*
+             * Suppress errors as long as we are not done.
+             */
+
+            errno = 0;
+        } else if (statePtr->connectError != 0) {
+            errno = statePtr->connectError;
+            statePtr->connectError = 0;
+        } else {
+            int err;
+
+            getsockopt(statePtr->fds.fd, SOL_SOCKET, SO_ERROR, (char *) &err,
+                    &optlen);
+            errno = err;
+        }
+        if (errno != 0) {
+	    Tcl_DStringAppend(dsPtr, Tcl_ErrnoMsg(errno), -1);
+        }
+	return TCL_OK;
+    }
+
+    if ((len > 1) && (optionName[1] == 'c') &&
+	    (strncmp(optionName, "-connecting", len) == 0)) {
+        Tcl_DStringAppend(dsPtr,
+                GOT_BITS(statePtr->flags, TCP_ASYNC_CONNECT) ? "1" : "0", -1);
+        return TCL_OK;
+    }
+
+    if ((len == 0) || ((len > 1) && (optionName[1] == 'p') &&
+	    (strncmp(optionName, "-peername", len) == 0))) {
+        address peername;
+        socklen_t size = sizeof(peername);
+
+	if (GOT_BITS(statePtr->flags, TCP_ASYNC_CONNECT)) {
+	    /*
+	     * In async connect output an empty string
+	     */
+
+	    if (len == 0) {
+		Tcl_DStringAppendElement(dsPtr, "-peername");
+		Tcl_DStringAppendElement(dsPtr, "");
+	    } else {
+		return TCL_OK;
+	    }
+	} else if (getpeername(statePtr->fds.fd, &peername.sa, &size) >= 0) {
+	    /*
+	     * Peername fetch succeeded - output list
+	     */
+
+	    if (len == 0) {
+		Tcl_DStringAppendElement(dsPtr, "-peername");
+		Tcl_DStringStartSublist(dsPtr);
+	    }
+            TcpHostPortList(interp, dsPtr, peername, size);
+	    if (len) {
+                return TCL_OK;
+            }
+            Tcl_DStringEndSublist(dsPtr);
+	} else {
+	    /*
+	     * getpeername failed - but if we were asked for all the options
+	     * (len==0), don't flag an error at that point because it could be
+	     * an fconfigure request on a server socket (which have no peer).
+	     * Same must be done on win&mac.
+	     */
+
+	    if (len) {
+		if (interp) {
+		    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+                            "can't get peername: %s",
+			    Tcl_PosixError(interp)));
+		}
+		return TCL_ERROR;
+	    }
+	}
+    }
+
+    if ((len == 0) || ((len > 1) && (optionName[1] == 's') &&
+	    (strncmp(optionName, "-sockname", len) == 0))) {
+	TcpFdList *fds;
+        address sockname;
+        socklen_t size;
+	int found = 0;
+
+	if (len == 0) {
+	    Tcl_DStringAppendElement(dsPtr, "-sockname");
+	    Tcl_DStringStartSublist(dsPtr);
+	}
+	if (GOT_BITS(statePtr->flags, TCP_ASYNC_CONNECT)) {
+	    /*
+	     * In async connect output an empty string
+	     */
+
+            found = 1;
+	} else {
+	    for (fds = &statePtr->fds; fds != NULL; fds = fds->next) {
+		size = sizeof(sockname);
+		if (getsockname(fds->fd, &(sockname.sa), &size) >= 0) {
+		    found = 1;
+		    TcpHostPortList(interp, dsPtr, sockname, size);
+		}
+	    }
+	}
+        if (found) {
+            if (len) {
+                return TCL_OK;
+            }
+            Tcl_DStringEndSublist(dsPtr);
+        } else {
+            if (interp) {
+                Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+                        "can't get sockname: %s", Tcl_PosixError(interp)));
+            }
+	    return TCL_ERROR;
+	}
+    }
+
+    if (len > 0) {
+	return Tcl_BadChannelOption(interp, optionName,
+                "connecting peername sockname");
+    }
+
+    return TCL_OK;
+}
+
+/*
+ * ----------------------------------------------------------------------
+ *
+ * TcpWatchProc --
+ *
+ *	Initialize the notifier to watch the fd from this channel.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Sets up the notifier so that a future event on the channel will be
+ *	seen by Tcl.
+ *
+ * ----------------------------------------------------------------------
+ */
+
+static void
+WrapNotify(
+    ClientData clientData,
+    int mask)
+{
+    TcpState *statePtr = (TcpState *) clientData;
+    int newmask = mask & statePtr->interest;
+
+    if (newmask == 0) {
+	/*
+	 * There was no overlap between the states the channel is interested
+	 * in notifications for, and the states that are reported present on
+	 * the file descriptor by select().  The only way that can happen is
+	 * when the channel is interested in a writable condition, and only a
+	 * readable state is reported present (see TcpWatchProc() below).  In
+	 * that case, signal back to the caller the writable state, which is
+	 * really an error condition.  As an extra check on that assumption,
+	 * check for a non-zero value of errno before reporting an artificial
+	 * writable state.
+	 */
+
+	if (errno == 0) {
+	    return;
+	}
+	newmask = TCL_WRITABLE;
+    }
+    Tcl_NotifyChannel(statePtr->channel, newmask);
+}
+
+static void
+TcpWatchProc(
+    ClientData instanceData,	/* The socket state. */
+    int mask)			/* Events of interest; an OR-ed combination of
+				 * TCL_READABLE, TCL_WRITABLE and
+				 * TCL_EXCEPTION. */
+{
+    TcpState *statePtr = instanceData;
+
+    if (statePtr->acceptProc != NULL) {
+        /*
+         * Make sure we don't mess with server sockets since they will never
+         * be readable or writable at the Tcl level. This keeps Tcl scripts
+         * from interfering with the -accept behavior (bug #3394732).
+         */
+
+    	return;
+    }
+
+    if (GOT_BITS(statePtr->flags, TCP_ASYNC_PENDING)) {
+        /*
+         * Async sockets use a FileHandler internally while connecting, so we
+         * need to cache this request until the connection has succeeded.
+         */
+
+        statePtr->filehandlers = mask;
+    } else if (mask) {
+
+	/*
+	 * Whether it is a bug or feature or otherwise, it is a fact of life
+	 * that on at least some Linux kernels select() fails to report that a
+	 * socket file descriptor is writable when the other end of the socket
+	 * is closed.  This is in contrast to the guarantees Tcl makes that
+	 * its channels become writable and fire writable events on an error
+	 * conditon.  This has caused a leak of file descriptors in a state of
+	 * background flushing.  See Tcl ticket 1758a0b603.
+	 *
+	 * As a workaround, when our caller indicates an interest in writable
+	 * notifications, we must tell the notifier built around select() that
+	 * we are interested in the readable state of the file descriptor as
+	 * well, as that is the only reliable means to get notified of error
+	 * conditions.  Then it is the task of WrapNotify() above to untangle
+	 * the meaning of these channel states and report the chan events as
+	 * best it can.  We save a copy of the mask passed in to assist with
+	 * that.
+	 */
+
+	statePtr->interest = mask;
+        Tcl_CreateFileHandler(statePtr->fds.fd, mask|TCL_READABLE,
+                (Tcl_FileProc *) WrapNotify, statePtr);
+    } else {
+        Tcl_DeleteFileHandler(statePtr->fds.fd);
+    }
+}
+
+/*
+ * ----------------------------------------------------------------------
+ *
+ * TcpGetHandleProc --
+ *
+ *	Called from Tcl_GetChannelHandle to retrieve OS handles from inside a
+ *	TCP socket based channel.
+ *
+ * Results:
+ *	Returns TCL_OK with the fd in handlePtr, or TCL_ERROR if there is no
+ *	handle for the specified direction.
+ *
+ * Side effects:
+ *	None.
+ *
+ * ----------------------------------------------------------------------
+ */
+
+	/* ARGSUSED */
+static int
+TcpGetHandleProc(
+    ClientData instanceData,	/* The socket state. */
+    int direction,		/* Not used. */
+    ClientData *handlePtr)	/* Where to store the handle. */
+{
+    TcpState *statePtr = instanceData;
+
+    *handlePtr = INT2PTR(statePtr->fds.fd);
+    return TCL_OK;
+}
+
+/*
+ * ----------------------------------------------------------------------
+ *
+ * TcpAsyncCallback --
+ *
+ *	Called by the event handler that TcpConnect sets up internally for
+ *	[socket -async] to get notified when the asynchronous connection
+ *	attempt has succeeded or failed.
+ *
+ * ----------------------------------------------------------------------
+ */
+
+static void
+TcpAsyncCallback(
+    ClientData clientData,	/* The socket state. */
+    int mask)			/* Events of interest; an OR-ed combination of
+				 * TCL_READABLE, TCL_WRITABLE and
+				 * TCL_EXCEPTION. */
+{
+    TcpConnect(NULL, clientData);
+}
+
+/*
+ * ----------------------------------------------------------------------
+ *
+ * TcpConnect --
+ *
+ *	This function opens a new socket in client mode.
+ *
+ * Results:
+ *      TCL_OK, if the socket was successfully connected or an asynchronous
+ *      connection is in progress. If an error occurs, TCL_ERROR is returned
+ *      and an error message is left in interp.
+ *
+ * Side effects:
+ *	Opens a socket.
+ *
+ * Remarks:
+ *	A single host name may resolve to more than one IP address, e.g. for
+ *	an IPv4/IPv6 dual stack host. For handling asynchronously connecting
+ *	sockets in the background for such hosts, this function can act as a
+ *	coroutine. On the first call, it sets up the control variables for the
+ *	two nested loops over the local and remote addresses. Once the first
+ *	connection attempt is in progress, it sets up itself as a writable
+ *	event handler for that socket, and returns. When the callback occurs,
+ *	control is transferred to the "reenter" label, right after the initial
+ *	return and the loops resume as if they had never been interrupted.
+ *	For synchronously connecting sockets, the loops work the usual way.
+ *
+ * ----------------------------------------------------------------------
+ */
+
+static int
+TcpConnect(
+    Tcl_Interp *interp,		/* For error reporting; can be NULL. */
+    TcpState *statePtr)
+{
+    socklen_t optlen;
+    int async_callback = GOT_BITS(statePtr->flags, TCP_ASYNC_PENDING);
+    int ret = -1, error = EHOSTUNREACH;
+    int async = GOT_BITS(statePtr->flags, TCP_ASYNC_CONNECT);
+
+    if (async_callback) {
+        goto reenter;
+    }
+
+    for (statePtr->addr = statePtr->addrlist; statePtr->addr != NULL;
+            statePtr->addr = statePtr->addr->ai_next) {
+        for (statePtr->myaddr = statePtr->myaddrlist;
+                statePtr->myaddr != NULL;
+                statePtr->myaddr = statePtr->myaddr->ai_next) {
+            int reuseaddr = 1;
+
+	    /*
+	     * No need to try combinations of local and remote addresses of
+	     * different families.
+	     */
+
+	    if (statePtr->myaddr->ai_family != statePtr->addr->ai_family) {
+		continue;
+	    }
+
+            /*
+             * Close the socket if it is still open from the last unsuccessful
+             * iteration.
+             */
+
+            if (statePtr->fds.fd >= 0) {
+		close(statePtr->fds.fd);
+		statePtr->fds.fd = -1;
+                errno = 0;
+	    }
+
+	    statePtr->fds.fd = socket(statePtr->addr->ai_family, SOCK_STREAM,
+                    0);
+	    if (statePtr->fds.fd < 0) {
+		continue;
+	    }
+
+	    /*
+	     * Set the close-on-exec flag so that the socket will not get
+	     * inherited by child processes.
+	     */
+
+	    fcntl(statePtr->fds.fd, F_SETFD, FD_CLOEXEC);
+
+	    /*
+	     * Set kernel space buffering
+	     */
+
+	    TclSockMinimumBuffers(INT2PTR(statePtr->fds.fd), SOCKET_BUFSIZE);
+
+	    if (async) {
+                ret = TclUnixSetBlockingMode(statePtr->fds.fd,
+                        TCL_MODE_NONBLOCKING);
+                if (ret < 0) {
+                    continue;
+                }
+            }
+
+            /*
+             * Must reset the error variable here, before we use it for the
+             * first time in this iteration.
+             */
+
+            error = 0;
+
+            (void) setsockopt(statePtr->fds.fd, SOL_SOCKET, SO_REUSEADDR,
+                    (char *) &reuseaddr, sizeof(reuseaddr));
+            ret = bind(statePtr->fds.fd, statePtr->myaddr->ai_addr,
+                    statePtr->myaddr->ai_addrlen);
+            if (ret < 0) {
+                error = errno;
+                continue;
+            }
+
+	    /*
+	     * Attempt to connect. The connect may fail at present with an
+	     * EINPROGRESS but at a later time it will complete. The caller
+	     * will set up a file handler on the socket if she is interested
+	     * in being informed when the connect completes.
+	     */
+
+	    ret = connect(statePtr->fds.fd, statePtr->addr->ai_addr,
+                        statePtr->addr->ai_addrlen);
+            if (ret < 0) {
+                error = errno;
+            }
+	    if (ret < 0 && errno == EINPROGRESS) {
+                Tcl_CreateFileHandler(statePtr->fds.fd,
+                        TCL_WRITABLE | TCL_EXCEPTION, TcpAsyncCallback,
+                        statePtr);
+                errno = EWOULDBLOCK;
+                SET_BITS(statePtr->flags, TCP_ASYNC_PENDING);
+                return TCL_OK;
+
+            reenter:
+                CLEAR_BITS(statePtr->flags, TCP_ASYNC_PENDING);
+                Tcl_DeleteFileHandler(statePtr->fds.fd);
+
+                /*
+                 * Read the error state from the socket to see if the async
+                 * connection has succeeded or failed. As this clears the
+                 * error condition, we cache the status in the socket state
+                 * struct for later retrieval by [fconfigure -error].
+                 */
+
+                optlen = sizeof(int);
+
+                getsockopt(statePtr->fds.fd, SOL_SOCKET, SO_ERROR,
+                        (char *) &error, &optlen);
+                errno = error;
+            }
+	    if (error == 0) {
+		goto out;
+	    }
+	}
+    }
+
+  out:
+    statePtr->connectError = error;
+    CLEAR_BITS(statePtr->flags, TCP_ASYNC_CONNECT);
+    if (async_callback) {
+        /*
+         * An asynchonous connection has finally succeeded or failed.
+         */
+
+        TcpWatchProc(statePtr, statePtr->filehandlers);
+        TclUnixSetBlockingMode(statePtr->fds.fd, statePtr->cachedBlocking);
+
+        if (error != 0) {
+            SET_BITS(statePtr->flags, TCP_ASYNC_FAILED);
+        }
+
+        /*
+         * We need to forward the writable event that brought us here, bcasue
+         * upon reading of getsockopt(SO_ERROR), at least some OSes clear the
+         * writable state from the socket, and so a subsequent select() on
+         * behalf of a script level [fileevent] would not fire. It doesn't
+         * hurt that this is also called in the successful case and will save
+         * the event mechanism one roundtrip through select().
+         */
+
+	if (statePtr->cachedBlocking == TCL_MODE_NONBLOCKING) {
+	    Tcl_NotifyChannel(statePtr->channel, TCL_WRITABLE);
+	}
+    }
+    if (error != 0) {
+        /*
+         * Failure for either a synchronous connection, or an async one that
+         * failed before it could enter background mode, e.g. because an
+         * invalid -myaddr was given.
+         */
+
+        if (interp != NULL) {
+            errno = error;
+            Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+                    "couldn't open socket: %s", Tcl_PosixError(interp)));
+        }
+        return TCL_ERROR;
+    }
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_OpenTcpClient --
+ *
+ *	Opens a TCP client socket and creates a channel around it.
+ *
+ * Results:
+ *	The channel or NULL if failed. An error message is returned in the
+ *	interpreter on failure.
+ *
+ * Side effects:
+ *	Opens a client socket and creates a new channel.
+ *
+ *----------------------------------------------------------------------
+ */
+
+Tcl_Channel
+Tcl_OpenTcpClient(
+    Tcl_Interp *interp,		/* For error reporting; can be NULL. */
+    int port,			/* Port number to open. */
+    const char *host,		/* Host on which to open port. */
+    const char *myaddr,		/* Client-side address */
+    int myport,			/* Client-side port */
+    int async)			/* If nonzero, attempt to do an asynchronous
+				 * connect. Otherwise we do a blocking
+				 * connect. */
+{
+    TcpState *statePtr;
+    const char *errorMsg = NULL;
+    struct addrinfo *addrlist = NULL, *myaddrlist = NULL;
+    char channelName[SOCK_CHAN_LENGTH];
+
+    /*
+     * Do the name lookups for the local and remote addresses.
+     */
+
+    if (!TclCreateSocketAddress(interp, &addrlist, host, port, 0, &errorMsg)
+            || !TclCreateSocketAddress(interp, &myaddrlist, myaddr, myport, 1,
+                    &errorMsg)) {
+        if (addrlist != NULL) {
+            freeaddrinfo(addrlist);
+        }
+        if (interp != NULL) {
+            Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+                    "couldn't open socket: %s", errorMsg));
+        }
+        return NULL;
+    }
+
+    /*
+     * Allocate a new TcpState for this socket.
+     */
+
+    statePtr = ckalloc(sizeof(TcpState));
+    memset(statePtr, 0, sizeof(TcpState));
+    statePtr->flags = async ? TCP_ASYNC_CONNECT : 0;
+    statePtr->cachedBlocking = TCL_MODE_BLOCKING;
+    statePtr->addrlist = addrlist;
+    statePtr->myaddrlist = myaddrlist;
+    statePtr->fds.fd = -1;
+
+    /*
+     * Create a new client socket and wrap it in a channel.
+     */
+
+    if (TcpConnect(interp, statePtr) != TCL_OK) {
+        TcpCloseProc(statePtr, NULL);
+        return NULL;
+    }
+
+    sprintf(channelName, SOCK_TEMPLATE, (long) statePtr);
+
+    statePtr->channel = Tcl_CreateChannel(&tcpChannelType, channelName,
+            statePtr, TCL_READABLE | TCL_WRITABLE);
+    if (Tcl_SetChannelOption(interp, statePtr->channel, "-translation",
+	    "auto crlf") == TCL_ERROR) {
+	Tcl_Close(NULL, statePtr->channel);
+	return NULL;
+    }
+    return statePtr->channel;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_MakeTcpClientChannel --
+ *
+ *	Creates a Tcl_Channel from an existing client TCP socket.
+ *
+ * Results:
+ *	The Tcl_Channel wrapped around the preexisting TCP socket.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+Tcl_Channel
+Tcl_MakeTcpClientChannel(
+    ClientData sock)		/* The socket to wrap up into a channel. */
+{
+    return (Tcl_Channel) TclpMakeTcpClientChannelMode(sock,
+            TCL_READABLE | TCL_WRITABLE);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclpMakeTcpClientChannelMode --
+ *
+ *	Creates a Tcl_Channel from an existing client TCP socket
+ *	with given mode.
+ *
+ * Results:
+ *	The Tcl_Channel wrapped around the preexisting TCP socket.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void *
+TclpMakeTcpClientChannelMode(
+    void *sock,		/* The socket to wrap up into a channel. */
+    int mode)			/* ORed combination of TCL_READABLE and
+				 * TCL_WRITABLE to indicate file mode. */
+{
+    TcpState *statePtr;
+    char channelName[SOCK_CHAN_LENGTH];
+
+    statePtr = ckalloc(sizeof(TcpState));
+    memset(statePtr, 0, sizeof(TcpState));
+    statePtr->fds.fd = PTR2INT(sock);
+    statePtr->flags = 0;
+
+    sprintf(channelName, SOCK_TEMPLATE, (long)statePtr);
+
+    statePtr->channel = Tcl_CreateChannel(&tcpChannelType, channelName,
+	    statePtr, mode);
+    if (Tcl_SetChannelOption(NULL, statePtr->channel, "-translation",
+	    "auto crlf") == TCL_ERROR) {
+	Tcl_Close(NULL, statePtr->channel);
+	return NULL;
+    }
+    return statePtr->channel;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_OpenTcpServer --
+ *
+ *	Opens a TCP server socket and creates a channel around it.
+ *
+ * Results:
+ *	The channel or NULL if failed. If an error occurred, an error message
+ *	is left in the interp's result if interp is not NULL.
+ *
+ * Side effects:
+ *	Opens a server socket and creates a new channel.
+ *
+ *----------------------------------------------------------------------
+ */
+
+Tcl_Channel
+Tcl_OpenTcpServer(
+    Tcl_Interp *interp,		/* For error reporting - may be NULL. */
+    int port,			/* Port number to open. */
+    const char *myHost,		/* Name of local host. */
+    Tcl_TcpAcceptProc *acceptProc,
+				/* Callback for accepting connections from new
+				 * clients. */
+    ClientData acceptProcData)	/* Data for the callback. */
+{
+    int status = 0, sock = -1, reuseaddr = 1, chosenport = 0;
+    struct addrinfo *addrlist = NULL, *addrPtr;	/* socket address */
+    TcpState *statePtr = NULL;
+    char channelName[SOCK_CHAN_LENGTH];
+    const char *errorMsg = NULL;
+    TcpFdList *fds = NULL, *newfds;
+
+    /*
+     * Try to record and return the most meaningful error message, i.e. the
+     * one from the first socket that went the farthest before it failed.
+     */
+
+    enum { LOOKUP, SOCKET, BIND, LISTEN } howfar = LOOKUP;
+    int my_errno = 0;
+
+    if (!TclCreateSocketAddress(interp, &addrlist, myHost, port, 1, &errorMsg)) {
+	my_errno = errno;
+	goto error;
+    }
+
+    for (addrPtr = addrlist; addrPtr != NULL; addrPtr = addrPtr->ai_next) {
+	sock = socket(addrPtr->ai_family, addrPtr->ai_socktype,
+                addrPtr->ai_protocol);
+	if (sock == -1) {
+	    if (howfar < SOCKET) {
+		howfar = SOCKET;
+		my_errno = errno;
+	    }
+	    continue;
+	}
+
+	/*
+	 * Set the close-on-exec flag so that the socket will not get
+	 * inherited by child processes.
+	 */
+
+	fcntl(sock, F_SETFD, FD_CLOEXEC);
+
+	/*
+	 * Set kernel space buffering
+	 */
+
+	TclSockMinimumBuffers(INT2PTR(sock), SOCKET_BUFSIZE);
+
+	/*
+	 * Set up to reuse server addresses automatically and bind to the
+	 * specified port.
+	 */
+
+	(void) setsockopt(sock, SOL_SOCKET, SO_REUSEADDR,
+		(char *) &reuseaddr, sizeof(reuseaddr));
+
+        /*
+         * Make sure we use the same port number when opening two server
+         * sockets for IPv4 and IPv6 on a random port.
+         *
+         * As sockaddr_in6 uses the same offset and size for the port member
+         * as sockaddr_in, we can handle both through the IPv4 API.
+         */
+
+	if (port == 0 && chosenport != 0) {
+	    ((struct sockaddr_in *) addrPtr->ai_addr)->sin_port =
+                    htons(chosenport);
+	}
+
+#ifdef IPV6_V6ONLY
+	/*
+         * Missing on: Solaris 2.8
+         */
+
+        if (addrPtr->ai_family == AF_INET6) {
+            int v6only = 1;
+
+            (void) setsockopt(sock, IPPROTO_IPV6, IPV6_V6ONLY,
+                    &v6only, sizeof(v6only));
+        }
+#endif /* IPV6_V6ONLY */
+
+	status = bind(sock, addrPtr->ai_addr, addrPtr->ai_addrlen);
+        if (status == -1) {
+	    if (howfar < BIND) {
+		howfar = BIND;
+		my_errno = errno;
+	    }
+            close(sock);
+            sock = -1;
+            continue;
+        }
+        if (port == 0 && chosenport == 0) {
+            address sockname;
+            socklen_t namelen = sizeof(sockname);
+
+            /*
+             * Synchronize port numbers when binding to port 0 of multiple
+             * addresses.
+             */
+
+            if (getsockname(sock, &sockname.sa, &namelen) >= 0) {
+                chosenport = ntohs(sockname.sa4.sin_port);
+            }
+        }
+        status = listen(sock, SOMAXCONN);
+        if (status < 0) {
+	    if (howfar < LISTEN) {
+		howfar = LISTEN;
+		my_errno = errno;
+	    }
+            close(sock);
+            sock = -1;
+            continue;
+        }
+        if (statePtr == NULL) {
+            /*
+             * Allocate a new TcpState for this socket.
+             */
+
+            statePtr = ckalloc(sizeof(TcpState));
+            memset(statePtr, 0, sizeof(TcpState));
+            statePtr->acceptProc = acceptProc;
+            statePtr->acceptProcData = acceptProcData;
+            sprintf(channelName, SOCK_TEMPLATE, (long) statePtr);
+            newfds = &statePtr->fds;
+        } else {
+            newfds = ckalloc(sizeof(TcpFdList));
+            memset(newfds, (int) 0, sizeof(TcpFdList));
+            fds->next = newfds;
+        }
+        newfds->fd = sock;
+        newfds->statePtr = statePtr;
+        fds = newfds;
+
+        /*
+         * Set up the callback mechanism for accepting connections from new
+         * clients.
+         */
+
+        Tcl_CreateFileHandler(sock, TCL_READABLE, TcpAccept, fds);
+    }
+
+  error:
+    if (addrlist != NULL) {
+	freeaddrinfo(addrlist);
+    }
+    if (statePtr != NULL) {
+	statePtr->channel = Tcl_CreateChannel(&tcpChannelType, channelName,
+		statePtr, 0);
+	return statePtr->channel;
+    }
+    if (interp != NULL) {
+        Tcl_Obj *errorObj = Tcl_NewStringObj("couldn't open socket: ", -1);
+
+	if (errorMsg == NULL) {
+            errno = my_errno;
+            Tcl_AppendToObj(errorObj, Tcl_PosixError(interp), -1);
+        } else {
+	    Tcl_AppendToObj(errorObj, errorMsg, -1);
+	}
+        Tcl_SetObjResult(interp, errorObj);
+    }
+    if (sock != -1) {
+	close(sock);
+    }
+    return NULL;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TcpAccept --
+ *	Accept a TCP socket connection.	 This is called by the event loop.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Creates a new connection socket. Calls the registered callback for the
+ *	connection acceptance mechanism.
+ *
+ *----------------------------------------------------------------------
+ */
+
+	/* ARGSUSED */
+static void
+TcpAccept(
+    ClientData data,		/* Callback token. */
+    int mask)			/* Not used. */
+{
+    TcpFdList *fds = data;	/* Client data of server socket. */
+    int newsock;		/* The new client socket */
+    TcpState *newSockState;	/* State for new socket. */
+    address addr;		/* The remote address */
+    socklen_t len;		/* For accept interface */
+    char channelName[SOCK_CHAN_LENGTH];
+    char host[NI_MAXHOST], port[NI_MAXSERV];
+
+    len = sizeof(addr);
+    newsock = accept(fds->fd, &addr.sa, &len);
+    if (newsock < 0) {
+	return;
+    }
+
+    /*
+     * Set close-on-exec flag to prevent the newly accepted socket from being
+     * inherited by child processes.
+     */
+
+    (void) fcntl(newsock, F_SETFD, FD_CLOEXEC);
+
+    newSockState = ckalloc(sizeof(TcpState));
+    memset(newSockState, 0, sizeof(TcpState));
+    newSockState->flags = 0;
+    newSockState->fds.fd = newsock;
+
+    sprintf(channelName, SOCK_TEMPLATE, (long) newSockState);
+    newSockState->channel = Tcl_CreateChannel(&tcpChannelType, channelName,
+	    newSockState, TCL_READABLE | TCL_WRITABLE);
+
+    Tcl_SetChannelOption(NULL, newSockState->channel, "-translation",
+	    "auto crlf");
+
+    if (fds->statePtr->acceptProc != NULL) {
+	getnameinfo(&addr.sa, len, host, sizeof(host), port, sizeof(port),
+                NI_NUMERICHOST|NI_NUMERICSERV);
+	fds->statePtr->acceptProc(fds->statePtr->acceptProcData,
+                newSockState->channel, host, atoi(port));
+    }
+}
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * tab-width: 8
+ * indent-tabs-mode: nil
+ * End:
+ */
diff --git a/tcl8.6/unix/tclUnixTest.c b/tcl8.6/unix/tclUnixTest.c
new file mode 100644
index 0000000..c5ac52a
--- /dev/null
+++ b/tcl8.6/unix/tclUnixTest.c
@@ -0,0 +1,782 @@
+/*
+ * tclUnixTest.c --
+ *
+ *	Contains platform specific test commands for the Unix platform.
+ *
+ * Copyright (c) 1996-1997 Sun Microsystems, Inc.
+ * Copyright (c) 1998 by Scriptics Corporation.
+ *
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ */
+
+#ifndef USE_TCL_STUBS
+#   define USE_TCL_STUBS
+#endif
+#include "tclInt.h"
+
+/*
+ * The headers are needed for the testalarm command that verifies the use of
+ * SA_RESTART in signal handlers.
+ */
+
+#include <signal.h>
+#include <sys/resource.h>
+
+/*
+ * The following macros convert between TclFile's and fd's. The conversion
+ * simple involves shifting fd's up by one to ensure that no valid fd is ever
+ * the same as NULL. Note that this code is duplicated from tclUnixPipe.c
+ */
+
+#define MakeFile(fd)	((TclFile)INT2PTR(((int)(fd))+1))
+#define GetFd(file)	(PTR2INT(file)-1)
+
+/*
+ * The stuff below is used to keep track of file handlers created and
+ * exercised by the "testfilehandler" command.
+ */
+
+typedef struct Pipe {
+    TclFile readFile;		/* File handle for reading from the pipe. NULL
+				 * means pipe doesn't exist yet. */
+    TclFile writeFile;		/* File handle for writing from the pipe. */
+    int readCount;		/* Number of times the file handler for this
+				 * file has triggered and the file was
+				 * readable. */
+    int writeCount;		/* Number of times the file handler for this
+				 * file has triggered and the file was
+				 * writable. */
+} Pipe;
+
+#define MAX_PIPES 10
+static Pipe testPipes[MAX_PIPES];
+
+/*
+ * The stuff below is used by the testalarm and testgotsig ommands.
+ */
+
+static const char *gotsig = "0";
+
+/*
+ * Forward declarations of functions defined later in this file:
+ */
+
+static Tcl_CmdProc TestalarmCmd;
+static Tcl_ObjCmdProc TestchmodCmd;
+static Tcl_CmdProc TestfilehandlerCmd;
+static Tcl_CmdProc TestfilewaitCmd;
+static Tcl_CmdProc TestfindexecutableCmd;
+static Tcl_ObjCmdProc TestforkObjCmd;
+static Tcl_CmdProc TestgetdefencdirCmd;
+static Tcl_CmdProc TestgetopenfileCmd;
+static Tcl_CmdProc TestgotsigCmd;
+static Tcl_CmdProc TestsetdefencdirCmd;
+static Tcl_FileProc TestFileHandlerProc;
+static void AlarmHandler(int signum);
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclplatformtestInit --
+ *
+ *	Defines commands that test platform specific functionality for Unix
+ *	platforms.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	Defines new commands.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclplatformtestInit(
+    Tcl_Interp *interp)		/* Interpreter to add commands to. */
+{
+    Tcl_CreateObjCommand(interp, "testchmod", TestchmodCmd,
+	    NULL, NULL);
+    Tcl_CreateCommand(interp, "testfilehandler", TestfilehandlerCmd,
+	    NULL, NULL);
+    Tcl_CreateCommand(interp, "testfilewait", TestfilewaitCmd,
+	    NULL, NULL);
+    Tcl_CreateCommand(interp, "testfindexecutable", TestfindexecutableCmd,
+	    NULL, NULL);
+    Tcl_CreateObjCommand(interp, "testfork", TestforkObjCmd,
+        NULL, NULL);
+    Tcl_CreateCommand(interp, "testgetopenfile", TestgetopenfileCmd,
+	    NULL, NULL);
+    Tcl_CreateCommand(interp, "testgetdefenc", TestgetdefencdirCmd,
+	    NULL, NULL);
+    Tcl_CreateCommand(interp, "testsetdefenc", TestsetdefencdirCmd,
+	    NULL, NULL);
+    Tcl_CreateCommand(interp, "testalarm", TestalarmCmd,
+	    NULL, NULL);
+    Tcl_CreateCommand(interp, "testgotsig", TestgotsigCmd,
+	    NULL, NULL);
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TestfilehandlerCmd --
+ *
+ *	This function implements the "testfilehandler" command. It is used to
+ *	test Tcl_CreateFileHandler, Tcl_DeleteFileHandler, and TclWaitForFile.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+TestfilehandlerCmd(
+    ClientData clientData,	/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int argc,			/* Number of arguments. */
+    const char **argv)		/* Argument strings. */
+{
+    Pipe *pipePtr;
+    int i, mask, timeout;
+    static int initialized = 0;
+    char buffer[4000];
+    TclFile file;
+
+    /*
+     * NOTE: When we make this code work on Windows also, the following
+     * variable needs to be made Unix-only.
+     */
+
+    if (!initialized) {
+	for (i = 0; i < MAX_PIPES; i++) {
+	    testPipes[i].readFile = NULL;
+	}
+	initialized = 1;
+    }
+
+    if (argc < 2) {
+	Tcl_AppendResult(interp, "wrong # arguments: should be \"", argv[0],
+		" option ... \"", NULL);
+        return TCL_ERROR;
+    }
+    pipePtr = NULL;
+    if (argc >= 3) {
+	if (Tcl_GetInt(interp, argv[2], &i) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+	if (i >= MAX_PIPES) {
+	    Tcl_AppendResult(interp, "bad index ", argv[2], NULL);
+	    return TCL_ERROR;
+	}
+	pipePtr = &testPipes[i];
+    }
+
+    if (strcmp(argv[1], "close") == 0) {
+	for (i = 0; i < MAX_PIPES; i++) {
+	    if (testPipes[i].readFile != NULL) {
+		TclpCloseFile(testPipes[i].readFile);
+		testPipes[i].readFile = NULL;
+		TclpCloseFile(testPipes[i].writeFile);
+		testPipes[i].writeFile = NULL;
+	    }
+	}
+    } else if (strcmp(argv[1], "clear") == 0) {
+	if (argc != 3) {
+	    Tcl_AppendResult(interp, "wrong # arguments: should be \"",
+		    argv[0], " clear index\"", NULL);
+	    return TCL_ERROR;
+	}
+	pipePtr->readCount = pipePtr->writeCount = 0;
+    } else if (strcmp(argv[1], "counts") == 0) {
+	char buf[TCL_INTEGER_SPACE * 2];
+
+	if (argc != 3) {
+	    Tcl_AppendResult(interp, "wrong # arguments: should be \"",
+		    argv[0], " counts index\"", NULL);
+	    return TCL_ERROR;
+	}
+	sprintf(buf, "%d %d", pipePtr->readCount, pipePtr->writeCount);
+	Tcl_AppendResult(interp, buf, NULL);
+    } else if (strcmp(argv[1], "create") == 0) {
+	if (argc != 5) {
+	    Tcl_AppendResult(interp, "wrong # arguments: should be \"",
+		    argv[0], " create index readMode writeMode\"", NULL);
+	    return TCL_ERROR;
+	}
+	if (pipePtr->readFile == NULL) {
+	    if (!TclpCreatePipe(&pipePtr->readFile, &pipePtr->writeFile)) {
+		Tcl_AppendResult(interp, "couldn't open pipe: ",
+			Tcl_PosixError(interp), NULL);
+		return TCL_ERROR;
+	    }
+#ifdef O_NONBLOCK
+	    fcntl(GetFd(pipePtr->readFile), F_SETFL, O_NONBLOCK);
+	    fcntl(GetFd(pipePtr->writeFile), F_SETFL, O_NONBLOCK);
+#else
+	    Tcl_AppendResult(interp, "can't make pipes non-blocking",
+		    NULL);
+	    return TCL_ERROR;
+#endif
+	}
+	pipePtr->readCount = 0;
+	pipePtr->writeCount = 0;
+
+	if (strcmp(argv[3], "readable") == 0) {
+	    Tcl_CreateFileHandler(GetFd(pipePtr->readFile), TCL_READABLE,
+		    TestFileHandlerProc, pipePtr);
+	} else if (strcmp(argv[3], "off") == 0) {
+	    Tcl_DeleteFileHandler(GetFd(pipePtr->readFile));
+	} else if (strcmp(argv[3], "disabled") == 0) {
+	    Tcl_CreateFileHandler(GetFd(pipePtr->readFile), 0,
+		    TestFileHandlerProc, pipePtr);
+	} else {
+	    Tcl_AppendResult(interp, "bad read mode \"", argv[3], "\"", NULL);
+	    return TCL_ERROR;
+	}
+	if (strcmp(argv[4], "writable") == 0) {
+	    Tcl_CreateFileHandler(GetFd(pipePtr->writeFile), TCL_WRITABLE,
+		    TestFileHandlerProc, pipePtr);
+	} else if (strcmp(argv[4], "off") == 0) {
+	    Tcl_DeleteFileHandler(GetFd(pipePtr->writeFile));
+	} else if (strcmp(argv[4], "disabled") == 0) {
+	    Tcl_CreateFileHandler(GetFd(pipePtr->writeFile), 0,
+		    TestFileHandlerProc, pipePtr);
+	} else {
+	    Tcl_AppendResult(interp, "bad read mode \"", argv[4], "\"", NULL);
+	    return TCL_ERROR;
+	}
+    } else if (strcmp(argv[1], "empty") == 0) {
+	if (argc != 3) {
+	    Tcl_AppendResult(interp, "wrong # arguments: should be \"",
+		    argv[0], " empty index\"", NULL);
+	    return TCL_ERROR;
+	}
+
+        while (read(GetFd(pipePtr->readFile), buffer, 4000) > 0) {
+	    /* Empty loop body. */
+        }
+    } else if (strcmp(argv[1], "fill") == 0) {
+	if (argc != 3) {
+	    Tcl_AppendResult(interp, "wrong # arguments: should be \"",
+		    argv[0], " fill index\"", NULL);
+	    return TCL_ERROR;
+	}
+
+	memset(buffer, 'a', 4000);
+        while (write(GetFd(pipePtr->writeFile), buffer, 4000) > 0) {
+	    /* Empty loop body. */
+        }
+    } else if (strcmp(argv[1], "fillpartial") == 0) {
+	char buf[TCL_INTEGER_SPACE];
+
+	if (argc != 3) {
+	    Tcl_AppendResult(interp, "wrong # arguments: should be \"",
+		    argv[0], " fillpartial index\"", NULL);
+	    return TCL_ERROR;
+	}
+
+	memset(buffer, 'b', 10);
+	TclFormatInt(buf, write(GetFd(pipePtr->writeFile), buffer, 10));
+	Tcl_AppendResult(interp, buf, NULL);
+    } else if (strcmp(argv[1], "oneevent") == 0) {
+	Tcl_DoOneEvent(TCL_FILE_EVENTS|TCL_DONT_WAIT);
+    } else if (strcmp(argv[1], "wait") == 0) {
+	if (argc != 5) {
+	    Tcl_AppendResult(interp, "wrong # arguments: should be \"",
+		    argv[0], " wait index readable|writable timeout\"", NULL);
+	    return TCL_ERROR;
+	}
+	if (pipePtr->readFile == NULL) {
+	    Tcl_AppendResult(interp, "pipe ", argv[2], " doesn't exist", NULL);
+	    return TCL_ERROR;
+	}
+	if (strcmp(argv[3], "readable") == 0) {
+	    mask = TCL_READABLE;
+	    file = pipePtr->readFile;
+	} else {
+	    mask = TCL_WRITABLE;
+	    file = pipePtr->writeFile;
+	}
+	if (Tcl_GetInt(interp, argv[4], &timeout) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+	i = TclUnixWaitForFile(GetFd(file), mask, timeout);
+	if (i & TCL_READABLE) {
+	    Tcl_AppendElement(interp, "readable");
+	}
+	if (i & TCL_WRITABLE) {
+	    Tcl_AppendElement(interp, "writable");
+	}
+    } else if (strcmp(argv[1], "windowevent") == 0) {
+	Tcl_DoOneEvent(TCL_WINDOW_EVENTS|TCL_DONT_WAIT);
+    } else {
+	Tcl_AppendResult(interp, "bad option \"", argv[1],
+		"\": must be close, clear, counts, create, empty, fill, "
+		"fillpartial, oneevent, wait, or windowevent", NULL);
+	return TCL_ERROR;
+    }
+    return TCL_OK;
+}
+
+static void
+TestFileHandlerProc(
+    ClientData clientData,	/* Points to a Pipe structure. */
+    int mask)			/* Indicates which events happened:
+				 * TCL_READABLE or TCL_WRITABLE. */
+{
+    Pipe *pipePtr = clientData;
+
+    if (mask & TCL_READABLE) {
+	pipePtr->readCount++;
+    }
+    if (mask & TCL_WRITABLE) {
+	pipePtr->writeCount++;
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TestfilewaitCmd --
+ *
+ *	This function implements the "testfilewait" command. It is used to
+ *	test TclUnixWaitForFile.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+TestfilewaitCmd(
+    ClientData clientData,	/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int argc,			/* Number of arguments. */
+    const char **argv)		/* Argument strings. */
+{
+    int mask, result, timeout;
+    Tcl_Channel channel;
+    int fd;
+    ClientData data;
+
+    if (argc != 4) {
+	Tcl_AppendResult(interp, "wrong # arguments: should be \"", argv[0],
+		" file readable|writable|both timeout\"", NULL);
+	return TCL_ERROR;
+    }
+    channel = Tcl_GetChannel(interp, argv[1], NULL);
+    if (channel == NULL) {
+	return TCL_ERROR;
+    }
+    if (strcmp(argv[2], "readable") == 0) {
+	mask = TCL_READABLE;
+    } else if (strcmp(argv[2], "writable") == 0){
+	mask = TCL_WRITABLE;
+    } else if (strcmp(argv[2], "both") == 0){
+	mask = TCL_WRITABLE|TCL_READABLE;
+    } else {
+	Tcl_AppendResult(interp, "bad argument \"", argv[2],
+		"\": must be readable, writable, or both", NULL);
+	return TCL_ERROR;
+    }
+    if (Tcl_GetChannelHandle(channel,
+	    (mask & TCL_READABLE) ? TCL_READABLE : TCL_WRITABLE,
+	    (ClientData*) &data) != TCL_OK) {
+	Tcl_AppendResult(interp, "couldn't get channel file", NULL);
+	return TCL_ERROR;
+    }
+    fd = PTR2INT(data);
+    if (Tcl_GetInt(interp, argv[3], &timeout) != TCL_OK) {
+	return TCL_ERROR;
+    }
+    result = TclUnixWaitForFile(fd, mask, timeout);
+    if (result & TCL_READABLE) {
+	Tcl_AppendElement(interp, "readable");
+    }
+    if (result & TCL_WRITABLE) {
+	Tcl_AppendElement(interp, "writable");
+    }
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TestfindexecutableCmd --
+ *
+ *	This function implements the "testfindexecutable" command. It is used
+ *	to test TclpFindExecutable.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+TestfindexecutableCmd(
+    ClientData clientData,	/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int argc,			/* Number of arguments. */
+    const char **argv)		/* Argument strings. */
+{
+    Tcl_Obj *saveName;
+
+    if (argc != 2) {
+	Tcl_AppendResult(interp, "wrong # arguments: should be \"", argv[0],
+		" argv0\"", NULL);
+	return TCL_ERROR;
+    }
+
+    saveName = TclGetObjNameOfExecutable();
+    Tcl_IncrRefCount(saveName);
+
+    TclpFindExecutable(argv[1]);
+    Tcl_SetObjResult(interp, TclGetObjNameOfExecutable());
+
+    TclSetObjNameOfExecutable(saveName, NULL);
+    Tcl_DecrRefCount(saveName);
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TestgetopenfileCmd --
+ *
+ *	This function implements the "testgetopenfile" command. It is used to
+ *	get a FILE * value from a registered channel.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+TestgetopenfileCmd(
+    ClientData clientData,	/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int argc,			/* Number of arguments. */
+    const char **argv)		/* Argument strings. */
+{
+    ClientData filePtr;
+
+    if (argc != 3) {
+        Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
+		" channelName forWriting\"", NULL);
+        return TCL_ERROR;
+    }
+    if (Tcl_GetOpenFile(interp, argv[1], atoi(argv[2]), 1, &filePtr)
+	    == TCL_ERROR) {
+        return TCL_ERROR;
+    }
+    if (filePtr == NULL) {
+        Tcl_AppendResult(interp,
+		"Tcl_GetOpenFile succeeded but FILE * NULL!", NULL);
+        return TCL_ERROR;
+    }
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TestsetdefencdirCmd --
+ *
+ *	This function implements the "testsetdefenc" command. It is used to
+ *	test Tcl_SetDefaultEncodingDir().
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+TestsetdefencdirCmd(
+    ClientData clientData,	/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int argc,			/* Number of arguments. */
+    const char **argv)		/* Argument strings. */
+{
+    if (argc != 2) {
+        Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
+		" defaultDir\"", NULL);
+        return TCL_ERROR;
+    }
+
+    Tcl_SetDefaultEncodingDir(argv[1]);
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TestforkObjCmd --
+ *
+ *	This function implements the "testfork" command. It is used to
+ *	fork the Tcl process for specific test cases.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+TestforkObjCmd(
+    ClientData clientData,	/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const *objv)		/* Argument strings. */
+{
+    pid_t pid;
+
+    if (objc != 1) {
+        Tcl_WrongNumArgs(interp, 1, objv, "");
+        return TCL_ERROR;
+    }
+    pid = fork();
+    if (pid == -1) {
+        Tcl_AppendResult(interp,
+                "Cannot fork", NULL);
+        return TCL_ERROR;
+    }
+    /* Only needed when pthread_atfork is not present,
+     * should not hurt otherwise. */
+    if (pid==0) {
+	Tcl_InitNotifier();
+    }
+    Tcl_SetObjResult(interp, Tcl_NewIntObj(pid));
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TestgetdefencdirCmd --
+ *
+ *	This function implements the "testgetdefenc" command. It is used to
+ *	test Tcl_GetDefaultEncodingDir().
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+TestgetdefencdirCmd(
+    ClientData clientData,	/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int argc,			/* Number of arguments. */
+    const char **argv)		/* Argument strings. */
+{
+    if (argc != 1) {
+        Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], NULL);
+        return TCL_ERROR;
+    }
+
+    Tcl_AppendResult(interp, Tcl_GetDefaultEncodingDir(), NULL);
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TestalarmCmd --
+ *
+ *	Test that EINTR is handled correctly by generating and handling a
+ *	signal. This requires using the SA_RESTART flag when registering the
+ *	signal handler.
+ *
+ * Results:
+ *	None.
+ *
+ * Side Effects:
+ *	Sets up an signal and async handlers.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+TestalarmCmd(
+    ClientData clientData,	/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int argc,			/* Number of arguments. */
+    const char **argv)		/* Argument strings. */
+{
+#ifdef SA_RESTART
+    unsigned int sec;
+    struct sigaction action;
+
+    if (argc > 1) {
+	Tcl_GetInt(interp, argv[1], (int *)&sec);
+    } else {
+	sec = 1;
+    }
+
+    /*
+     * Setup the signal handling that automatically retries any interrupted
+     * I/O system calls.
+     */
+
+    action.sa_handler = AlarmHandler;
+    memset((void *) &action.sa_mask, 0, sizeof(sigset_t));
+    action.sa_flags = SA_RESTART;
+
+    if (sigaction(SIGALRM, &action, NULL) < 0) {
+	Tcl_AppendResult(interp, "sigaction: ", Tcl_PosixError(interp), NULL);
+	return TCL_ERROR;
+    }
+    (void) alarm(sec);
+    return TCL_OK;
+#else
+    Tcl_AppendResult(interp,
+	    "warning: sigaction SA_RESTART not support on this platform",
+	    NULL);
+    return TCL_ERROR;
+#endif
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * AlarmHandler --
+ *
+ *	Signal handler for the alarm command.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ * 	Calls the Tcl Async handler.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+AlarmHandler(
+    int signum)
+{
+    gotsig = "1";
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TestgotsigCmd --
+ *
+ * 	Verify the signal was handled after the testalarm command.
+ *
+ * Results:
+ *	None.
+ *
+ * Side Effects:
+ *	Resets the value of gotsig back to '0'.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+TestgotsigCmd(
+    ClientData clientData,	/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int argc,			/* Number of arguments. */
+    const char **argv)		/* Argument strings. */
+{
+    Tcl_AppendResult(interp, gotsig, NULL);
+    gotsig = "0";
+    return TCL_OK;
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * TestchmodCmd --
+ *
+ *	Implements the "testchmod" cmd.  Used when testing "file" command.
+ *	The only attribute used by the Windows platform is the user write
+ *	flag; if this is not set, the file is made read-only.  Otehrwise, the
+ *	file is made read-write.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	Changes permissions of specified files.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+static int
+TestchmodCmd(
+    ClientData dummy,			/* Not used. */
+    Tcl_Interp *interp,			/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const *objv)		/* Argument strings. */
+{
+    int i, mode;
+
+    if (objc < 2) {
+    Tcl_WrongNumArgs(interp, 1, objv, "mode file ?file ...?");
+	return TCL_ERROR;
+    }
+
+    if (Tcl_GetIntFromObj(interp, objv[1], &mode) != TCL_OK) {
+	return TCL_ERROR;
+    }
+
+    for (i = 2; i < objc; i++) {
+	Tcl_DString buffer;
+	const char *translated;
+
+	translated = Tcl_TranslateFileName(interp, Tcl_GetString(objv[i]), &buffer);
+	if (translated == NULL) {
+	    return TCL_ERROR;
+	}
+	if (chmod(translated, (unsigned) mode) != 0) {
+	    Tcl_AppendResult(interp, translated, ": ", Tcl_PosixError(interp),
+		    NULL);
+	    return TCL_ERROR;
+	}
+	Tcl_DStringFree(&buffer);
+    }
+    return TCL_OK;
+}
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * tab-width: 8
+ * End:
+ */
diff --git a/tcl8.6/unix/tclUnixThrd.c b/tcl8.6/unix/tclUnixThrd.c
new file mode 100644
index 0000000..0609230
--- /dev/null
+++ b/tcl8.6/unix/tclUnixThrd.c
@@ -0,0 +1,824 @@
+/*
+ * tclUnixThrd.c --
+ *
+ *	This file implements the UNIX-specific thread support.
+ *
+ * Copyright (c) 1991-1994 The Regents of the University of California.
+ * Copyright (c) 1994-1997 Sun Microsystems, Inc.
+ * Copyright (c) 2008 by George Peter Staplin
+ *
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ */
+
+#include "tclInt.h"
+
+#ifdef TCL_THREADS
+
+typedef struct ThreadSpecificData {
+    char nabuf[16];
+} ThreadSpecificData;
+
+static Tcl_ThreadDataKey dataKey;
+
+/*
+ * masterLock is used to serialize creation of mutexes, condition variables,
+ * and thread local storage. This is the only place that can count on the
+ * ability to statically initialize the mutex.
+ */
+
+static pthread_mutex_t masterLock = PTHREAD_MUTEX_INITIALIZER;
+
+/*
+ * initLock is used to serialize initialization and finalization of Tcl. It
+ * cannot use any dyamically allocated storage.
+ */
+
+static pthread_mutex_t initLock = PTHREAD_MUTEX_INITIALIZER;
+
+/*
+ * allocLock is used by Tcl's version of malloc for synchronization. For
+ * obvious reasons, cannot use any dyamically allocated storage.
+ */
+
+static pthread_mutex_t allocLock = PTHREAD_MUTEX_INITIALIZER;
+static pthread_mutex_t *allocLockPtr = &allocLock;
+
+/*
+ * These are for the critical sections inside this file.
+ */
+
+#define MASTER_LOCK	pthread_mutex_lock(&masterLock)
+#define MASTER_UNLOCK	pthread_mutex_unlock(&masterLock)
+
+#endif /* TCL_THREADS */
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclpThreadCreate --
+ *
+ *	This procedure creates a new thread.
+ *
+ * Results:
+ *	TCL_OK if the thread could be created. The thread ID is returned in a
+ *	parameter.
+ *
+ * Side effects:
+ *	A new thread is created.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclpThreadCreate(
+    Tcl_ThreadId *idPtr,	/* Return, the ID of the thread */
+    Tcl_ThreadCreateProc *proc,	/* Main() function of the thread */
+    ClientData clientData,	/* The one argument to Main() */
+    int stackSize,		/* Size of stack for the new thread */
+    int flags)			/* Flags controlling behaviour of the new
+				 * thread. */
+{
+#ifdef TCL_THREADS
+    pthread_attr_t attr;
+    pthread_t theThread;
+    int result;
+
+    pthread_attr_init(&attr);
+    pthread_attr_setscope(&attr, PTHREAD_SCOPE_SYSTEM);
+
+#ifdef HAVE_PTHREAD_ATTR_SETSTACKSIZE
+    if (stackSize != TCL_THREAD_STACK_DEFAULT) {
+	pthread_attr_setstacksize(&attr, (size_t) stackSize);
+#ifdef TCL_THREAD_STACK_MIN
+    } else {
+	/*
+	 * Certain systems define a thread stack size that by default is too
+	 * small for many operations. The user has the option of defining
+	 * TCL_THREAD_STACK_MIN to a value large enough to work for their
+	 * needs. This would look like (for 128K min stack):
+	 *    make MEM_DEBUG_FLAGS=-DTCL_THREAD_STACK_MIN=131072L
+	 *
+	 * This solution is not optimal, as we should allow the user to
+	 * specify a size at runtime, but we don't want to slow this function
+	 * down, and that would still leave the main thread at the default.
+	 */
+
+	size_t size;
+
+	result = pthread_attr_getstacksize(&attr, &size);
+	if (!result && (size < TCL_THREAD_STACK_MIN)) {
+	    pthread_attr_setstacksize(&attr, (size_t) TCL_THREAD_STACK_MIN);
+	}
+#endif /* TCL_THREAD_STACK_MIN */
+    }
+#endif /* HAVE_PTHREAD_ATTR_SETSTACKSIZE */
+
+    if (! (flags & TCL_THREAD_JOINABLE)) {
+	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
+    }
+
+    if (pthread_create(&theThread, &attr,
+	    (void * (*)(void *))proc, (void *)clientData) &&
+	    pthread_create(&theThread, NULL,
+		    (void * (*)(void *))proc, (void *)clientData)) {
+	result = TCL_ERROR;
+    } else {
+	*idPtr = (Tcl_ThreadId)theThread;
+	result = TCL_OK;
+    }
+    pthread_attr_destroy(&attr);
+    return result;
+#else
+    return TCL_ERROR;
+#endif /* TCL_THREADS */
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_JoinThread --
+ *
+ *	This procedure waits upon the exit of the specified thread.
+ *
+ * Results:
+ *	TCL_OK if the wait was successful, TCL_ERROR else.
+ *
+ * Side effects:
+ *	The result area is set to the exit code of the thread we waited upon.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+Tcl_JoinThread(
+    Tcl_ThreadId threadId,	/* Id of the thread to wait upon. */
+    int *state)			/* Reference to the storage the result of the
+				 * thread we wait upon will be written into.
+				 * May be NULL. */
+{
+#ifdef TCL_THREADS
+    int result;
+    unsigned long retcode, *retcodePtr = &retcode;
+
+    result = pthread_join((pthread_t) threadId, (void**) retcodePtr);
+    if (state) {
+	*state = (int) retcode;
+    }
+    return (result == 0) ? TCL_OK : TCL_ERROR;
+#else
+    return TCL_ERROR;
+#endif
+}
+
+#ifdef TCL_THREADS
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclpThreadExit --
+ *
+ *	This procedure terminates the current thread.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	This procedure terminates the current thread.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+TclpThreadExit(
+    int status)
+{
+    pthread_exit(INT2PTR(status));
+}
+#endif /* TCL_THREADS */
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_GetCurrentThread --
+ *
+ *	This procedure returns the ID of the currently running thread.
+ *
+ * Results:
+ *	A thread ID.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+Tcl_ThreadId
+Tcl_GetCurrentThread(void)
+{
+#ifdef TCL_THREADS
+    return (Tcl_ThreadId) pthread_self();
+#else
+    return (Tcl_ThreadId) 0;
+#endif
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclpInitLock
+ *
+ *	This procedure is used to grab a lock that serializes initialization
+ *	and finalization of Tcl. On some platforms this may also initialize
+ *	the mutex used to serialize creation of more mutexes and thread local
+ *	storage keys.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Acquire the initialization mutex.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+TclpInitLock(void)
+{
+#ifdef TCL_THREADS
+    pthread_mutex_lock(&initLock);
+#endif
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclpFinalizeLock
+ *
+ *	This procedure is used to destroy all private resources used in this
+ *	file.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Destroys everything private. TclpInitLock must be held entering this
+ *	function.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+TclFinalizeLock(void)
+{
+#ifdef TCL_THREADS
+    /*
+     * You do not need to destroy mutexes that were created with the
+     * PTHREAD_MUTEX_INITIALIZER macro. These mutexes do not need any
+     * destruction: masterLock, allocLock, and initLock.
+     */
+
+    pthread_mutex_unlock(&initLock);
+#endif
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclpInitUnlock
+ *
+ *	This procedure is used to release a lock that serializes
+ *	initialization and finalization of Tcl.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Release the initialization mutex.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+TclpInitUnlock(void)
+{
+#ifdef TCL_THREADS
+    pthread_mutex_unlock(&initLock);
+#endif
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclpMasterLock
+ *
+ *	This procedure is used to grab a lock that serializes creation and
+ *	finalization of serialization objects. This interface is only needed
+ *	in finalization; it is hidden during creation of the objects.
+ *
+ *	This lock must be different than the initLock because the initLock is
+ *	held during creation of synchronization objects.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Acquire the master mutex.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+TclpMasterLock(void)
+{
+#ifdef TCL_THREADS
+    pthread_mutex_lock(&masterLock);
+#endif
+}
+
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclpMasterUnlock
+ *
+ *	This procedure is used to release a lock that serializes creation and
+ *	finalization of synchronization objects.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Release the master mutex.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+TclpMasterUnlock(void)
+{
+#ifdef TCL_THREADS
+    pthread_mutex_unlock(&masterLock);
+#endif
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_GetAllocMutex
+ *
+ *	This procedure returns a pointer to a statically initialized mutex for
+ *	use by the memory allocator. The alloctor must use this lock, because
+ *	all other locks are allocated...
+ *
+ * Results:
+ *	A pointer to a mutex that is suitable for passing to Tcl_MutexLock and
+ *	Tcl_MutexUnlock.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+Tcl_Mutex *
+Tcl_GetAllocMutex(void)
+{
+#ifdef TCL_THREADS
+    pthread_mutex_t **allocLockPtrPtr = &allocLockPtr;
+    return (Tcl_Mutex *) allocLockPtrPtr;
+#else
+    return NULL;
+#endif
+}
+
+#ifdef TCL_THREADS
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_MutexLock --
+ *
+ *	This procedure is invoked to lock a mutex. This procedure handles
+ *	initializing the mutex, if necessary. The caller can rely on the fact
+ *	that Tcl_Mutex is an opaque pointer. This routine will change that
+ *	pointer from NULL after first use.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	May block the current thread. The mutex is acquired when this returns.
+ *	Will allocate memory for a pthread_mutex_t and initialize this the
+ *	first time this Tcl_Mutex is used.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+Tcl_MutexLock(
+    Tcl_Mutex *mutexPtr)	/* Really (pthread_mutex_t **) */
+{
+    pthread_mutex_t *pmutexPtr;
+
+    if (*mutexPtr == NULL) {
+	MASTER_LOCK;
+	if (*mutexPtr == NULL) {
+	    /*
+	     * Double inside master lock check to avoid a race condition.
+	     */
+
+	    pmutexPtr = ckalloc(sizeof(pthread_mutex_t));
+	    pthread_mutex_init(pmutexPtr, NULL);
+	    *mutexPtr = (Tcl_Mutex)pmutexPtr;
+	    TclRememberMutex(mutexPtr);
+	}
+	MASTER_UNLOCK;
+    }
+    pmutexPtr = *((pthread_mutex_t **)mutexPtr);
+    pthread_mutex_lock(pmutexPtr);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_MutexUnlock --
+ *
+ *	This procedure is invoked to unlock a mutex. The mutex must have been
+ *	locked by Tcl_MutexLock.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	The mutex is released when this returns.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+Tcl_MutexUnlock(
+    Tcl_Mutex *mutexPtr)	/* Really (pthread_mutex_t **) */
+{
+    pthread_mutex_t *pmutexPtr = *(pthread_mutex_t **) mutexPtr;
+
+    pthread_mutex_unlock(pmutexPtr);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclpFinalizeMutex --
+ *
+ *	This procedure is invoked to clean up one mutex. This is only safe to
+ *	call at the end of time.
+ *
+ *	This assumes the Master Lock is held.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	The mutex list is deallocated.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+TclpFinalizeMutex(
+    Tcl_Mutex *mutexPtr)
+{
+    pthread_mutex_t *pmutexPtr = *(pthread_mutex_t **) mutexPtr;
+
+    if (pmutexPtr != NULL) {
+	pthread_mutex_destroy(pmutexPtr);
+	ckfree(pmutexPtr);
+	*mutexPtr = NULL;
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_ConditionWait --
+ *
+ *	This procedure is invoked to wait on a condition variable. The mutex
+ *	is automically released as part of the wait, and automatically grabbed
+ *	when the condition is signaled.
+ *
+ *	The mutex must be held when this procedure is called.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	May block the current thread. The mutex is acquired when this returns.
+ *	Will allocate memory for a pthread_mutex_t and initialize this the
+ *	first time this Tcl_Mutex is used.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+Tcl_ConditionWait(
+    Tcl_Condition *condPtr,	/* Really (pthread_cond_t **) */
+    Tcl_Mutex *mutexPtr,	/* Really (pthread_mutex_t **) */
+    const Tcl_Time *timePtr) /* Timeout on waiting period */
+{
+    pthread_cond_t *pcondPtr;
+    pthread_mutex_t *pmutexPtr;
+    struct timespec ptime;
+
+    if (*condPtr == NULL) {
+	MASTER_LOCK;
+
+	/*
+	 * Double check inside mutex to avoid race, then initialize condition
+	 * variable if necessary.
+	 */
+
+	if (*condPtr == NULL) {
+	    pcondPtr = ckalloc(sizeof(pthread_cond_t));
+	    pthread_cond_init(pcondPtr, NULL);
+	    *condPtr = (Tcl_Condition) pcondPtr;
+	    TclRememberCondition(condPtr);
+	}
+	MASTER_UNLOCK;
+    }
+    pmutexPtr = *((pthread_mutex_t **)mutexPtr);
+    pcondPtr = *((pthread_cond_t **)condPtr);
+    if (timePtr == NULL) {
+	pthread_cond_wait(pcondPtr, pmutexPtr);
+    } else {
+	Tcl_Time now;
+
+	/*
+	 * Make sure to take into account the microsecond component of the
+	 * current time, including possible overflow situations. [Bug #411603]
+	 */
+
+	Tcl_GetTime(&now);
+	ptime.tv_sec = timePtr->sec + now.sec +
+	    (timePtr->usec + now.usec) / 1000000;
+	ptime.tv_nsec = 1000 * ((timePtr->usec + now.usec) % 1000000);
+	pthread_cond_timedwait(pcondPtr, pmutexPtr, &ptime);
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_ConditionNotify --
+ *
+ *	This procedure is invoked to signal a condition variable.
+ *
+ *	The mutex must be held during this call to avoid races, but this
+ *	interface does not enforce that.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	May unblock another thread.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+Tcl_ConditionNotify(
+    Tcl_Condition *condPtr)
+{
+    pthread_cond_t *pcondPtr = *((pthread_cond_t **)condPtr);
+    if (pcondPtr != NULL) {
+	pthread_cond_broadcast(pcondPtr);
+    } else {
+	/*
+	 * Noone has used the condition variable, so there are no waiters.
+	 */
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclpFinalizeCondition --
+ *
+ *	This procedure is invoked to clean up a condition variable. This is
+ *	only safe to call at the end of time.
+ *
+ *	This assumes the Master Lock is held.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	The condition variable is deallocated.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+TclpFinalizeCondition(
+    Tcl_Condition *condPtr)
+{
+    pthread_cond_t *pcondPtr = *(pthread_cond_t **)condPtr;
+
+    if (pcondPtr != NULL) {
+	pthread_cond_destroy(pcondPtr);
+	ckfree(pcondPtr);
+	*condPtr = NULL;
+    }
+}
+#endif /* TCL_THREADS */
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclpReaddir, TclpInetNtoa --
+ *
+ *	These procedures replace core C versions to be used in a threaded
+ *	environment.
+ *
+ * Results:
+ *	See documentation of C functions.
+ *
+ * Side effects:
+ *	See documentation of C functions.
+ *
+ * Notes:
+ *	TclpReaddir is no longer used by the core (see 1095909), but it
+ *	appears in the internal stubs table (see #589526).
+ *
+ *----------------------------------------------------------------------
+ */
+
+Tcl_DirEntry *
+TclpReaddir(
+    TclDIR * dir)
+{
+    return TclOSreaddir(dir);
+}
+
+#undef TclpInetNtoa
+char *
+TclpInetNtoa(
+    struct in_addr addr)
+{
+#ifdef TCL_THREADS
+    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
+    unsigned char *b = (unsigned char*) &addr.s_addr;
+
+    sprintf(tsdPtr->nabuf, "%u.%u.%u.%u", b[0], b[1], b[2], b[3]);
+    return tsdPtr->nabuf;
+#else
+    return inet_ntoa(addr);
+#endif
+}
+
+#ifdef TCL_THREADS
+/*
+ * Additions by AOL for specialized thread memory allocator.
+ */
+
+#ifdef USE_THREAD_ALLOC
+static volatile int initialized = 0;
+static pthread_key_t key;
+
+typedef struct allocMutex {
+    Tcl_Mutex tlock;
+    pthread_mutex_t plock;
+} allocMutex;
+
+Tcl_Mutex *
+TclpNewAllocMutex(void)
+{
+    struct allocMutex *lockPtr;
+    register pthread_mutex_t *plockPtr;
+
+    lockPtr = malloc(sizeof(struct allocMutex));
+    if (lockPtr == NULL) {
+	Tcl_Panic("could not allocate lock");
+    }
+    plockPtr = &lockPtr->plock;
+    lockPtr->tlock = (Tcl_Mutex) plockPtr;
+    pthread_mutex_init(&lockPtr->plock, NULL);
+    return &lockPtr->tlock;
+}
+
+void
+TclpFreeAllocMutex(
+    Tcl_Mutex *mutex)		/* The alloc mutex to free. */
+{
+    allocMutex* lockPtr = (allocMutex*) mutex;
+    if (!lockPtr) {
+	return;
+    }
+    pthread_mutex_destroy(&lockPtr->plock);
+    free(lockPtr);
+}
+
+void
+TclpFreeAllocCache(
+    void *ptr)
+{
+    if (ptr != NULL) {
+	/*
+	 * Called by TclFinalizeThreadAllocThread() during the thread
+	 * finalization initiated from Tcl_FinalizeThread()
+	 */
+
+	TclFreeAllocCache(ptr);
+	pthread_setspecific(key, NULL);
+
+    } else if (initialized) {
+	/*
+	 * Called by TclFinalizeThreadAlloc() during the process
+	 * finalization initiated from Tcl_Finalize()
+	 */
+
+	pthread_key_delete(key);
+	initialized = 0;
+    }
+}
+
+void *
+TclpGetAllocCache(void)
+{
+    if (!initialized) {
+	pthread_mutex_lock(allocLockPtr);
+	if (!initialized) {
+	    pthread_key_create(&key, NULL);
+	    initialized = 1;
+	}
+	pthread_mutex_unlock(allocLockPtr);
+    }
+    return pthread_getspecific(key);
+}
+
+void
+TclpSetAllocCache(
+    void *arg)
+{
+    pthread_setspecific(key, arg);
+}
+#endif /* USE_THREAD_ALLOC */
+
+void *
+TclpThreadCreateKey(void)
+{
+    pthread_key_t *ptkeyPtr;
+
+    ptkeyPtr = TclpSysAlloc(sizeof *ptkeyPtr, 0);
+    if (NULL == ptkeyPtr) {
+	Tcl_Panic("unable to allocate thread key!");
+    }
+
+    if (pthread_key_create(ptkeyPtr, NULL)) {
+	Tcl_Panic("unable to create pthread key!");
+    }
+
+    return ptkeyPtr;
+}
+
+void
+TclpThreadDeleteKey(
+    void *keyPtr)
+{
+    pthread_key_t *ptkeyPtr = keyPtr;
+
+    if (pthread_key_delete(*ptkeyPtr)) {
+	Tcl_Panic("unable to delete key!");
+    }
+
+    TclpSysFree(keyPtr);
+}
+
+void
+TclpThreadSetMasterTSD(
+    void *tsdKeyPtr,
+    void *ptr)
+{
+    pthread_key_t *ptkeyPtr = tsdKeyPtr;
+
+    if (pthread_setspecific(*ptkeyPtr, ptr)) {
+	Tcl_Panic("unable to set master TSD value");
+    }
+}
+
+void *
+TclpThreadGetMasterTSD(
+    void *tsdKeyPtr)
+{
+    pthread_key_t *ptkeyPtr = tsdKeyPtr;
+
+    return pthread_getspecific(*ptkeyPtr);
+}
+
+#endif /* TCL_THREADS */
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/tcl8.6/unix/tclUnixThrd.h b/tcl8.6/unix/tclUnixThrd.h
new file mode 100644
index 0000000..f03b530
--- /dev/null
+++ b/tcl8.6/unix/tclUnixThrd.h
@@ -0,0 +1,19 @@
+/*
+ * tclUnixThrd.h --
+ *
+ *      This header file defines things for thread support.
+ *
+ * Copyright (c) 1998 Sun Microsystems, Inc.
+ *
+ * See the file "license.terms" for information on usage and redistribution
+ * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ */
+
+#ifndef _TCLUNIXTHRD
+#define _TCLUNIXTHRD
+
+#ifdef TCL_THREADS
+
+
+#endif /* TCL_THREADS */
+#endif /* _TCLUNIXTHRD */
diff --git a/tcl8.6/unix/tclUnixTime.c b/tcl8.6/unix/tclUnixTime.c
new file mode 100644
index 0000000..6a3766d
--- /dev/null
+++ b/tcl8.6/unix/tclUnixTime.c
@@ -0,0 +1,541 @@
+/*
+ * tclUnixTime.c --
+ *
+ *	Contains Unix specific versions of Tcl functions that obtain time
+ *	values from the operating system.
+ *
+ * Copyright (c) 1995 Sun Microsystems, Inc.
+ *
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ */
+
+#include "tclInt.h"
+#include <locale.h>
+#if defined(TCL_WIDE_CLICKS) && defined(MAC_OSX_TCL)
+#include <mach/mach_time.h>
+#endif
+
+/*
+ * TclpGetDate is coded to return a pointer to a 'struct tm'. For thread
+ * safety, this structure must be in thread-specific data. The 'tmKey'
+ * variable is the key to this buffer.
+ */
+
+static Tcl_ThreadDataKey tmKey;
+typedef struct ThreadSpecificData {
+    struct tm gmtime_buf;
+    struct tm localtime_buf;
+} ThreadSpecificData;
+
+/*
+ * If we fall back on the thread-unsafe versions of gmtime and localtime, use
+ * this mutex to try to protect them.
+ */
+
+TCL_DECLARE_MUTEX(tmMutex)
+
+static char *lastTZ = NULL;	/* Holds the last setting of the TZ
+				 * environment variable, or an empty string if
+				 * the variable was not set. */
+
+/*
+ * Static functions declared in this file.
+ */
+
+static void		SetTZIfNecessary(void);
+static void		CleanupMemory(ClientData clientData);
+static void		NativeScaleTime(Tcl_Time *timebuf,
+			    ClientData clientData);
+static void		NativeGetTime(Tcl_Time *timebuf,
+			    ClientData clientData);
+
+/*
+ * TIP #233 (Virtualized Time): Data for the time hooks, if any.
+ */
+
+Tcl_GetTimeProc *tclGetTimeProcPtr = NativeGetTime;
+Tcl_ScaleTimeProc *tclScaleTimeProcPtr = NativeScaleTime;
+ClientData tclTimeClientData = NULL;
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclpGetSeconds --
+ *
+ *	This procedure returns the number of seconds from the epoch. On most
+ *	Unix systems the epoch is Midnight Jan 1, 1970 GMT.
+ *
+ * Results:
+ *	Number of seconds from the epoch.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+unsigned long
+TclpGetSeconds(void)
+{
+    return time(NULL);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclpGetClicks --
+ *
+ *	This procedure returns a value that represents the highest resolution
+ *	clock available on the system. There are no garantees on what the
+ *	resolution will be. In Tcl we will call this value a "click". The
+ *	start time is also system dependant.
+ *
+ * Results:
+ *	Number of clicks from some start time.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+unsigned long
+TclpGetClicks(void)
+{
+    unsigned long now;
+
+#ifdef NO_GETTOD
+    if (tclGetTimeProcPtr != NativeGetTime) {
+	Tcl_Time time;
+
+	tclGetTimeProcPtr(&time, tclTimeClientData);
+	now = time.sec*1000000 + time.usec;
+    } else {
+	/*
+	 * A semi-NativeGetTime, specialized to clicks.
+	 */
+	struct tms dummy;
+
+	now = (unsigned long) times(&dummy);
+    }
+#else
+    Tcl_Time time;
+
+    tclGetTimeProcPtr(&time, tclTimeClientData);
+    now = time.sec*1000000 + time.usec;
+#endif
+
+    return now;
+}
+#ifdef TCL_WIDE_CLICKS
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclpGetWideClicks --
+ *
+ *	This procedure returns a WideInt value that represents the highest
+ *	resolution clock available on the system. There are no garantees on
+ *	what the resolution will be. In Tcl we will call this value a "click".
+ *	The start time is also system dependant.
+ *
+ * Results:
+ *	Number of WideInt clicks from some start time.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+Tcl_WideInt
+TclpGetWideClicks(void)
+{
+    Tcl_WideInt now;
+
+    if (tclGetTimeProcPtr != NativeGetTime) {
+	Tcl_Time time;
+
+	tclGetTimeProcPtr(&time, tclTimeClientData);
+	now = ((Tcl_WideInt)time.sec)*1000000 + time.usec;
+    } else {
+#ifdef MAC_OSX_TCL
+	now = (Tcl_WideInt) (mach_absolute_time() & INT64_MAX);
+#else
+#error Wide high-resolution clicks not implemented on this platform
+#endif
+    }
+
+    return now;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclpWideClicksToNanoseconds --
+ *
+ *	This procedure converts click values from the TclpGetWideClicks native
+ *	resolution to nanosecond resolution.
+ *
+ * Results:
+ *	Number of nanoseconds from some start time.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+double
+TclpWideClicksToNanoseconds(
+    Tcl_WideInt clicks)
+{
+    double nsec;
+
+    if (tclGetTimeProcPtr != NativeGetTime) {
+	nsec = clicks * 1000;
+    } else {
+#ifdef MAC_OSX_TCL
+	static mach_timebase_info_data_t tb;
+	static uint64_t maxClicksForUInt64;
+
+	if (!tb.denom) {
+	    mach_timebase_info(&tb);
+	    maxClicksForUInt64 = UINT64_MAX / tb.numer;
+	}
+	if ((uint64_t) clicks < maxClicksForUInt64) {
+	    nsec = ((uint64_t) clicks) * tb.numer / tb.denom;
+	} else {
+	    nsec = ((long double) (uint64_t) clicks) * tb.numer / tb.denom;
+	}
+#else
+#error Wide high-resolution clicks not implemented on this platform
+#endif
+    }
+
+    return nsec;
+}
+#endif /* TCL_WIDE_CLICKS */
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_GetTime --
+ *
+ *	Gets the current system time in seconds and microseconds since the
+ *	beginning of the epoch: 00:00 UCT, January 1, 1970.
+ *
+ *	This function is hooked, allowing users to specify their own virtual
+ *	system time.
+ *
+ * Results:
+ *	Returns the current time in timePtr.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+Tcl_GetTime(
+    Tcl_Time *timePtr)		/* Location to store time information. */
+{
+    tclGetTimeProcPtr(timePtr, tclTimeClientData);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclpGetDate --
+ *
+ *	This function converts between seconds and struct tm. If useGMT is
+ *	true, then the returned date will be in Greenwich Mean Time (GMT).
+ *	Otherwise, it will be in the local time zone.
+ *
+ * Results:
+ *	Returns a static tm structure.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+struct tm *
+TclpGetDate(
+    const time_t *time,
+    int useGMT)
+{
+    if (useGMT) {
+	return TclpGmtime(time);
+    } else {
+	return TclpLocaltime(time);
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclpGmtime --
+ *
+ *	Wrapper around the 'gmtime' library function to make it thread safe.
+ *
+ * Results:
+ *	Returns a pointer to a 'struct tm' in thread-specific data.
+ *
+ * Side effects:
+ *	Invokes gmtime or gmtime_r as appropriate.
+ *
+ *----------------------------------------------------------------------
+ */
+
+struct tm *
+TclpGmtime(
+    const time_t *timePtr)	/* Pointer to the number of seconds since the
+				 * local system's epoch */
+{
+    /*
+     * Get a thread-local buffer to hold the returned time.
+     */
+
+    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&tmKey);
+
+#ifdef HAVE_GMTIME_R
+    gmtime_r(timePtr, &tsdPtr->gmtime_buf);
+#else
+    Tcl_MutexLock(&tmMutex);
+    memcpy(&tsdPtr->gmtime_buf, gmtime(timePtr), sizeof(struct tm));
+    Tcl_MutexUnlock(&tmMutex);
+#endif
+
+    return &tsdPtr->gmtime_buf;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclpLocaltime --
+ *
+ *	Wrapper around the 'localtime' library function to make it thread
+ *	safe.
+ *
+ * Results:
+ *	Returns a pointer to a 'struct tm' in thread-specific data.
+ *
+ * Side effects:
+ *	Invokes localtime or localtime_r as appropriate.
+ *
+ *----------------------------------------------------------------------
+ */
+
+struct tm *
+TclpLocaltime(
+    const time_t *timePtr)	/* Pointer to the number of seconds since the
+				 * local system's epoch */
+{
+    /*
+     * Get a thread-local buffer to hold the returned time.
+     */
+
+    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&tmKey);
+
+    SetTZIfNecessary();
+#ifdef HAVE_LOCALTIME_R
+    localtime_r(timePtr, &tsdPtr->localtime_buf);
+#else
+    Tcl_MutexLock(&tmMutex);
+    memcpy(&tsdPtr->localtime_buf, localtime(timePtr), sizeof(struct tm));
+    Tcl_MutexUnlock(&tmMutex);
+#endif
+
+    return &tsdPtr->localtime_buf;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_SetTimeProc --
+ *
+ *	TIP #233 (Virtualized Time): Registers two handlers for the
+ *	virtualization of Tcl's access to time information.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Remembers the handlers, alters core behaviour.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+Tcl_SetTimeProc(
+    Tcl_GetTimeProc *getProc,
+    Tcl_ScaleTimeProc *scaleProc,
+    ClientData clientData)
+{
+    tclGetTimeProcPtr = getProc;
+    tclScaleTimeProcPtr = scaleProc;
+    tclTimeClientData = clientData;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_QueryTimeProc --
+ *
+ *	TIP #233 (Virtualized Time): Query which time handlers are registered.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+Tcl_QueryTimeProc(
+    Tcl_GetTimeProc **getProc,
+    Tcl_ScaleTimeProc **scaleProc,
+    ClientData *clientData)
+{
+    if (getProc) {
+	*getProc = tclGetTimeProcPtr;
+    }
+    if (scaleProc) {
+	*scaleProc = tclScaleTimeProcPtr;
+    }
+    if (clientData) {
+	*clientData = tclTimeClientData;
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * NativeScaleTime --
+ *
+ *	TIP #233: Scale from virtual time to the real-time. For native scaling
+ *	the relationship is 1:1 and nothing has to be done.
+ *
+ * Results:
+ *	Scales the time in timePtr.
+ *
+ * Side effects:
+ *	See above.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+NativeScaleTime(
+    Tcl_Time *timePtr,
+    ClientData clientData)
+{
+    /* Native scale is 1:1. Nothing is done */
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * NativeGetTime --
+ *
+ *	TIP #233: Gets the current system time in seconds and microseconds
+ *	since the beginning of the epoch: 00:00 UCT, January 1, 1970.
+ *
+ * Results:
+ *	Returns the current time in timePtr.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+NativeGetTime(
+    Tcl_Time *timePtr,
+    ClientData clientData)
+{
+    struct timeval tv;
+
+    (void) gettimeofday(&tv, NULL);
+    timePtr->sec = tv.tv_sec;
+    timePtr->usec = tv.tv_usec;
+}
+/*
+ *----------------------------------------------------------------------
+ *
+ * SetTZIfNecessary --
+ *
+ *	Determines whether a call to 'tzset' is needed prior to the next call
+ *	to 'localtime' or examination of the 'timezone' variable.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	If 'tzset' has never been called in the current process, or if the
+ *	value of the environment variable TZ has changed since the last call
+ *	to 'tzset', then 'tzset' is called again.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+SetTZIfNecessary(void)
+{
+    const char *newTZ = getenv("TZ");
+
+    Tcl_MutexLock(&tmMutex);
+    if (newTZ == NULL) {
+	newTZ = "";
+    }
+    if (lastTZ == NULL || strcmp(lastTZ, newTZ)) {
+	tzset();
+	if (lastTZ == NULL) {
+	    Tcl_CreateExitHandler(CleanupMemory, NULL);
+	} else {
+	    ckfree(lastTZ);
+	}
+	lastTZ = ckalloc(strlen(newTZ) + 1);
+	strcpy(lastTZ, newTZ);
+    }
+    Tcl_MutexUnlock(&tmMutex);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * CleanupMemory --
+ *
+ *	Releases the private copy of the TZ environment variable upon exit
+ *	from Tcl.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Frees allocated memory.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+CleanupMemory(
+    ClientData ignored)
+{
+    ckfree(lastTZ);
+}
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/tcl8.6/unix/tclXtNotify.c b/tcl8.6/unix/tclXtNotify.c
new file mode 100644
index 0000000..a5d92d6
--- /dev/null
+++ b/tcl8.6/unix/tclXtNotify.c
@@ -0,0 +1,667 @@
+/*
+ * tclXtNotify.c --
+ *
+ *	This file contains the notifier driver implementation for the Xt
+ *	intrinsics.
+ *
+ * Copyright (c) 1997 by Sun Microsystems, Inc.
+ *
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ */
+
+#ifndef USE_TCL_STUBS
+#   define USE_TCL_STUBS
+#endif
+#include <X11/Intrinsic.h>
+#include "tclInt.h"
+
+/*
+ * This structure is used to keep track of the notifier info for a a
+ * registered file.
+ */
+
+typedef struct FileHandler {
+    int fd;
+    int mask;			/* Mask of desired events: TCL_READABLE,
+				 * etc. */
+    int readyMask;		/* Events that have been seen since the last
+				 * time FileHandlerEventProc was called for
+				 * this file. */
+    XtInputId read;		/* Xt read callback handle. */
+    XtInputId write;		/* Xt write callback handle. */
+    XtInputId except;		/* Xt exception callback handle. */
+    Tcl_FileProc *proc;		/* Procedure to call, in the style of
+				 * Tcl_CreateFileHandler. */
+    ClientData clientData;	/* Argument to pass to proc. */
+    struct FileHandler *nextPtr;/* Next in list of all files we care about. */
+} FileHandler;
+
+/*
+ * The following structure is what is added to the Tcl event queue when file
+ * handlers are ready to fire.
+ */
+
+typedef struct FileHandlerEvent {
+    Tcl_Event header;		/* Information that is standard for all
+				 * events. */
+    int fd;			/* File descriptor that is ready. Used to find
+				 * the FileHandler structure for the file
+				 * (can't point directly to the FileHandler
+				 * structure because it could go away while
+				 * the event is queued). */
+} FileHandlerEvent;
+
+/*
+ * The following static structure contains the state information for the Xt
+ * based implementation of the Tcl notifier.
+ */
+
+static struct NotifierState {
+    XtAppContext appContext;	/* The context used by the Xt notifier. Can be
+				 * set with TclSetAppContext. */
+    int appContextCreated;	/* Was it created by us? */
+    XtIntervalId currentTimeout;/* Handle of current timer. */
+    FileHandler *firstFileHandlerPtr;
+				/* Pointer to head of file handler list. */
+} notifier;
+
+/*
+ * The following static indicates whether this module has been initialized.
+ */
+
+static int initialized = 0;
+
+/*
+ * Static routines defined in this file.
+ */
+
+static int		FileHandlerEventProc(Tcl_Event *evPtr, int flags);
+static void		FileProc(XtPointer clientData, int *source,
+			    XtInputId *id);
+static void		NotifierExitHandler(ClientData clientData);
+static void		TimerProc(XtPointer clientData, XtIntervalId *id);
+static void		CreateFileHandler(int fd, int mask,
+			    Tcl_FileProc *proc, ClientData clientData);
+static void		DeleteFileHandler(int fd);
+static void		SetTimer(const Tcl_Time * timePtr);
+static int		WaitForEvent(const Tcl_Time * timePtr);
+
+/*
+ * Functions defined in this file for use by users of the Xt Notifier:
+ */
+
+MODULE_SCOPE void InitNotifier(void);
+MODULE_SCOPE XtAppContext TclSetAppContext(XtAppContext ctx);
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclSetAppContext --
+ *
+ *	Set the notifier application context.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Sets the application context used by the notifier. Panics if the
+ *	context is already set when called.
+ *
+ *----------------------------------------------------------------------
+ */
+
+XtAppContext
+TclSetAppContext(
+    XtAppContext appContext)
+{
+    if (!initialized) {
+	InitNotifier();
+    }
+
+    /*
+     * If we already have a context we check whether we were asked to set a
+     * new context. If so, we panic because we try to prevent switching
+     * contexts by mistake. Otherwise, we return the one we have.
+     */
+
+    if (notifier.appContext != NULL) {
+	if (appContext != NULL) {
+	    /*
+	     * We already have a context. We do not allow switching contexts
+	     * after initialization, so we panic.
+	     */
+
+	    Tcl_Panic("TclSetAppContext:  multiple application contexts");
+	}
+    } else {
+	/*
+	 * If we get here we have not yet gotten a context, so either create
+	 * one or use the one supplied by our caller.
+	 */
+
+	if (appContext == NULL) {
+	    /*
+	     * We must create a new context and tell our caller what it is, so
+	     * she can use it too.
+	     */
+
+	    notifier.appContext = XtCreateApplicationContext();
+	    notifier.appContextCreated = 1;
+	} else {
+	    /*
+	     * Otherwise we remember the context that our caller gave us and
+	     * use it.
+	     */
+
+	    notifier.appContextCreated = 0;
+	    notifier.appContext = appContext;
+	}
+    }
+
+    return notifier.appContext;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * InitNotifier --
+ *
+ *	Initializes the notifier state.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Creates a new exit handler.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+InitNotifier(void)
+{
+    Tcl_NotifierProcs np;
+
+    /*
+     * Only reinitialize if we are not in exit handling. The notifier can get
+     * reinitialized after its own exit handler has run, because of exit
+     * handlers for the I/O and timer sub-systems (order dependency).
+     */
+
+    if (TclInExit()) {
+	return;
+    }
+
+    np.createFileHandlerProc = CreateFileHandler;
+    np.deleteFileHandlerProc = DeleteFileHandler;
+    np.setTimerProc = SetTimer;
+    np.waitForEventProc = WaitForEvent;
+    np.initNotifierProc = Tcl_InitNotifier;
+    np.finalizeNotifierProc = Tcl_FinalizeNotifier;
+    np.alertNotifierProc = Tcl_AlertNotifier;
+    np.serviceModeHookProc = Tcl_ServiceModeHook;
+    Tcl_SetNotifier(&np);
+
+    /*
+     * DO NOT create the application context yet; doing so would prevent
+     * external applications from setting it for us to their own ones.
+     */
+
+    initialized = 1;
+    memset(&np, 0, sizeof(np));
+    Tcl_CreateExitHandler(NotifierExitHandler, NULL);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * NotifierExitHandler --
+ *
+ *	This function is called to cleanup the notifier state before Tcl is
+ *	unloaded.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Destroys the notifier window.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+NotifierExitHandler(
+    ClientData clientData)	/* Not used. */
+{
+    if (notifier.currentTimeout != 0) {
+	XtRemoveTimeOut(notifier.currentTimeout);
+    }
+    for (; notifier.firstFileHandlerPtr != NULL; ) {
+	Tcl_DeleteFileHandler(notifier.firstFileHandlerPtr->fd);
+    }
+    if (notifier.appContextCreated) {
+	XtDestroyApplicationContext(notifier.appContext);
+	notifier.appContextCreated = 0;
+	notifier.appContext = NULL;
+    }
+    initialized = 0;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * SetTimer --
+ *
+ *	This procedure sets the current notifier timeout value.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Replaces any previous timer.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+SetTimer(
+    const Tcl_Time *timePtr)		/* Timeout value, may be NULL. */
+{
+    long timeout;
+
+    if (!initialized) {
+	InitNotifier();
+    }
+
+    TclSetAppContext(NULL);
+    if (notifier.currentTimeout != 0) {
+	XtRemoveTimeOut(notifier.currentTimeout);
+    }
+    if (timePtr) {
+	timeout = timePtr->sec * 1000 + timePtr->usec / 1000;
+	notifier.currentTimeout = XtAppAddTimeOut(notifier.appContext,
+		(unsigned long) timeout, TimerProc, NULL);
+    } else {
+	notifier.currentTimeout = 0;
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TimerProc --
+ *
+ *	This procedure is the XtTimerCallbackProc used to handle timeouts.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Processes all queued events.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+TimerProc(
+    XtPointer clientData, /* Not used. */
+    XtIntervalId *id)
+{
+    if (*id != notifier.currentTimeout) {
+	return;
+    }
+    notifier.currentTimeout = 0;
+
+    Tcl_ServiceAll();
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * CreateFileHandler --
+ *
+ *	This procedure registers a file handler with the Xt notifier.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Creates a new file handler structure and registers one or more input
+ *	procedures with Xt.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+CreateFileHandler(
+    int fd,			/* Handle of stream to watch. */
+    int mask,			/* OR'ed combination of TCL_READABLE,
+				 * TCL_WRITABLE, and TCL_EXCEPTION: indicates
+				 * conditions under which proc should be
+				 * called. */
+    Tcl_FileProc *proc,		/* Procedure to call for each selected
+				 * event. */
+    ClientData clientData)	/* Arbitrary data to pass to proc. */
+{
+    FileHandler *filePtr;
+
+    if (!initialized) {
+	InitNotifier();
+    }
+
+    TclSetAppContext(NULL);
+
+    for (filePtr = notifier.firstFileHandlerPtr; filePtr != NULL;
+	    filePtr = filePtr->nextPtr) {
+	if (filePtr->fd == fd) {
+	    break;
+	}
+    }
+    if (filePtr == NULL) {
+	filePtr = ckalloc(sizeof(FileHandler));
+	filePtr->fd = fd;
+	filePtr->read = 0;
+	filePtr->write = 0;
+	filePtr->except = 0;
+	filePtr->readyMask = 0;
+	filePtr->mask = 0;
+	filePtr->nextPtr = notifier.firstFileHandlerPtr;
+	notifier.firstFileHandlerPtr = filePtr;
+    }
+    filePtr->proc = proc;
+    filePtr->clientData = clientData;
+
+    /*
+     * Register the file with the Xt notifier, if it hasn't been done yet.
+     */
+
+    if (mask & TCL_READABLE) {
+	if (!(filePtr->mask & TCL_READABLE)) {
+	    filePtr->read = XtAppAddInput(notifier.appContext, fd,
+		    INT2PTR(XtInputReadMask), FileProc, filePtr);
+	}
+    } else {
+	if (filePtr->mask & TCL_READABLE) {
+	    XtRemoveInput(filePtr->read);
+	}
+    }
+    if (mask & TCL_WRITABLE) {
+	if (!(filePtr->mask & TCL_WRITABLE)) {
+	    filePtr->write = XtAppAddInput(notifier.appContext, fd,
+		    INT2PTR(XtInputWriteMask), FileProc, filePtr);
+	}
+    } else {
+	if (filePtr->mask & TCL_WRITABLE) {
+	    XtRemoveInput(filePtr->write);
+	}
+    }
+    if (mask & TCL_EXCEPTION) {
+	if (!(filePtr->mask & TCL_EXCEPTION)) {
+	    filePtr->except = XtAppAddInput(notifier.appContext, fd,
+		    INT2PTR(XtInputExceptMask), FileProc, filePtr);
+	}
+    } else {
+	if (filePtr->mask & TCL_EXCEPTION) {
+	    XtRemoveInput(filePtr->except);
+	}
+    }
+    filePtr->mask = mask;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * DeleteFileHandler --
+ *
+ *	Cancel a previously-arranged callback arrangement for a file.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	If a callback was previously registered on file, remove it.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+DeleteFileHandler(
+    int fd)			/* Stream id for which to remove callback
+				 * procedure. */
+{
+    FileHandler *filePtr, *prevPtr;
+
+    if (!initialized) {
+	InitNotifier();
+    }
+
+    TclSetAppContext(NULL);
+
+    /*
+     * Find the entry for the given file (and return if there isn't one).
+     */
+
+    for (prevPtr = NULL, filePtr = notifier.firstFileHandlerPtr; ;
+	    prevPtr = filePtr, filePtr = filePtr->nextPtr) {
+	if (filePtr == NULL) {
+	    return;
+	}
+	if (filePtr->fd == fd) {
+	    break;
+	}
+    }
+
+    /*
+     * Clean up information in the callback record.
+     */
+
+    if (prevPtr == NULL) {
+	notifier.firstFileHandlerPtr = filePtr->nextPtr;
+    } else {
+	prevPtr->nextPtr = filePtr->nextPtr;
+    }
+    if (filePtr->mask & TCL_READABLE) {
+	XtRemoveInput(filePtr->read);
+    }
+    if (filePtr->mask & TCL_WRITABLE) {
+	XtRemoveInput(filePtr->write);
+    }
+    if (filePtr->mask & TCL_EXCEPTION) {
+	XtRemoveInput(filePtr->except);
+    }
+    ckfree(filePtr);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * FileProc --
+ *
+ *	These procedures are called by Xt when a file becomes readable,
+ *	writable, or has an exception.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Makes an entry on the Tcl event queue if the event is interesting.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+FileProc(
+    XtPointer clientData,
+    int *fd,
+    XtInputId *id)
+{
+    FileHandler *filePtr = (FileHandler *)clientData;
+    FileHandlerEvent *fileEvPtr;
+    int mask = 0;
+
+    /*
+     * Determine which event happened.
+     */
+
+    if (*id == filePtr->read) {
+	mask = TCL_READABLE;
+    } else if (*id == filePtr->write) {
+	mask = TCL_WRITABLE;
+    } else if (*id == filePtr->except) {
+	mask = TCL_EXCEPTION;
+    }
+
+    /*
+     * Ignore unwanted or duplicate events.
+     */
+
+    if (!(filePtr->mask & mask) || (filePtr->readyMask & mask)) {
+	return;
+    }
+
+    /*
+     * This is an interesting event, so put it onto the event queue.
+     */
+
+    filePtr->readyMask |= mask;
+    fileEvPtr = ckalloc(sizeof(FileHandlerEvent));
+    fileEvPtr->header.proc = FileHandlerEventProc;
+    fileEvPtr->fd = filePtr->fd;
+    Tcl_QueueEvent((Tcl_Event *) fileEvPtr, TCL_QUEUE_TAIL);
+
+    /*
+     * Process events on the Tcl event queue before returning to Xt.
+     */
+
+    Tcl_ServiceAll();
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * FileHandlerEventProc --
+ *
+ *	This procedure is called by Tcl_ServiceEvent when a file event reaches
+ *	the front of the event queue. This procedure is responsible for
+ *	actually handling the event by invoking the callback for the file
+ *	handler.
+ *
+ * Results:
+ *	Returns 1 if the event was handled, meaning it should be removed from
+ *	the queue. Returns 0 if the event was not handled, meaning it should
+ *	stay on the queue. The only time the event isn't handled is if the
+ *	TCL_FILE_EVENTS flag bit isn't set.
+ *
+ * Side effects:
+ *	Whatever the file handler's callback procedure does.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+FileHandlerEventProc(
+    Tcl_Event *evPtr,		/* Event to service. */
+    int flags)			/* Flags that indicate what events to handle,
+				 * such as TCL_FILE_EVENTS. */
+{
+    FileHandler *filePtr;
+    FileHandlerEvent *fileEvPtr = (FileHandlerEvent *) evPtr;
+    int mask;
+
+    if (!(flags & TCL_FILE_EVENTS)) {
+	return 0;
+    }
+
+    /*
+     * Search through the file handlers to find the one whose handle matches
+     * the event. We do this rather than keeping a pointer to the file handler
+     * directly in the event, so that the handler can be deleted while the
+     * event is queued without leaving a dangling pointer.
+     */
+
+    for (filePtr = notifier.firstFileHandlerPtr; filePtr != NULL;
+	    filePtr = filePtr->nextPtr) {
+	if (filePtr->fd != fileEvPtr->fd) {
+	    continue;
+	}
+
+	/*
+	 * The code is tricky for two reasons:
+	 * 1. The file handler's desired events could have changed since the
+	 *    time when the event was queued, so AND the ready mask with the
+	 *    desired mask.
+	 * 2. The file could have been closed and re-opened since the time
+	 *    when the event was queued. This is why the ready mask is stored
+	 *    in the file handler rather than the queued event: it will be
+	 *    zeroed when a new file handler is created for the newly opened
+	 *    file.
+	 */
+
+	mask = filePtr->readyMask & filePtr->mask;
+	filePtr->readyMask = 0;
+	if (mask != 0) {
+	    filePtr->proc(filePtr->clientData, mask);
+	}
+	break;
+    }
+    return 1;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * WaitForEvent --
+ *
+ *	This function is called by Tcl_DoOneEvent to wait for new events on
+ *	the message queue. If the block time is 0, then Tcl_WaitForEvent just
+ *	polls without blocking.
+ *
+ * Results:
+ *	Returns 1 if an event was found, else 0. This ensures that
+ *	Tcl_DoOneEvent will return 1, even if the event is handled by non-Tcl
+ *	code.
+ *
+ * Side effects:
+ *	Queues file events that are detected by the select.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+WaitForEvent(
+    const Tcl_Time *timePtr)		/* Maximum block time, or NULL. */
+{
+    int timeout;
+
+    if (!initialized) {
+	InitNotifier();
+    }
+
+    TclSetAppContext(NULL);
+
+    if (timePtr) {
+	timeout = timePtr->sec * 1000 + timePtr->usec / 1000;
+	if (timeout == 0) {
+	    if (XtAppPending(notifier.appContext)) {
+		goto process;
+	    } else {
+		return 0;
+	    }
+	} else {
+	    Tcl_SetTimer(timePtr);
+	}
+    }
+
+  process:
+    XtAppProcessEvent(notifier.appContext, XtIMAll);
+    return 1;
+}
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/tcl8.6/unix/tclXtTest.c b/tcl8.6/unix/tclXtTest.c
new file mode 100644
index 0000000..f7c2652
--- /dev/null
+++ b/tcl8.6/unix/tclXtTest.c
@@ -0,0 +1,134 @@
+/*
+ * tclXtTest.c --
+ *
+ *	Contains commands for Xt notifier specific tests on Unix.
+ *
+ * Copyright (c) 1997 by Sun Microsystems, Inc.
+ *
+ * See the file "license.terms" for information on usage and redistribution
+ * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ */
+
+#ifndef USE_TCL_STUBS
+#   define USE_TCL_STUBS
+#endif
+#include <X11/Intrinsic.h>
+#include "tcl.h"
+
+static Tcl_ObjCmdProc TesteventloopCmd;
+extern DLLEXPORT Tcl_PackageInitProc Tclxttest_Init;
+
+/*
+ * Functions defined in tclXtNotify.c for use by users of the Xt Notifier:
+ */
+
+extern void	InitNotifier(void);
+extern XtAppContext	TclSetAppContext(XtAppContext ctx);
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tclxttest_Init --
+ *
+ *	This procedure performs application-specific initialization. Most
+ *	applications, especially those that incorporate additional packages,
+ *	will have their own version of this procedure.
+ *
+ * Results:
+ *	Returns a standard Tcl completion code, and leaves an error message in
+ *	the interp's result if an error occurs.
+ *
+ * Side effects:
+ *	Depends on the startup script.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+Tclxttest_Init(
+    Tcl_Interp *interp)		/* Interpreter for application. */
+{
+    if (Tcl_InitStubs(interp, "8.1", 0) == NULL) {
+	return TCL_ERROR;
+    }
+    XtToolkitInitialize();
+    InitNotifier();
+    Tcl_CreateObjCommand(interp, "testeventloop", TesteventloopCmd,
+	    NULL, NULL);
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TesteventloopCmd --
+ *
+ *	This procedure implements the "testeventloop" command. It is used to
+ *	test the Tcl notifier from an "external" event loop (i.e. not
+ *	Tcl_DoOneEvent()).
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+TesteventloopCmd(
+    ClientData clientData,	/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
+{
+    static int *framePtr = NULL;/* Pointer to integer on stack frame of
+				 * innermost invocation of the "wait"
+				 * subcommand. */
+
+    if (objc < 2) {
+	Tcl_WrongNumArgs(interp, 1, objv, "option ...");
+	return TCL_ERROR;
+    }
+    if (strcmp(Tcl_GetString(objv[1]), "done") == 0) {
+	*framePtr = 1;
+    } else if (strcmp(Tcl_GetString(objv[1]), "wait") == 0) {
+	int *oldFramePtr;
+	int done;
+	int oldMode = Tcl_SetServiceMode(TCL_SERVICE_ALL);
+
+	/*
+	 * Save the old stack frame pointer and set up the current frame.
+	 */
+
+	oldFramePtr = framePtr;
+	framePtr = &done;
+
+	/*
+	 * Enter an Xt event loop until the flag changes. Note that we do not
+	 * explicitly call Tcl_ServiceEvent().
+	 */
+
+	done = 0;
+	while (!done) {
+	    XtAppProcessEvent(TclSetAppContext(NULL), XtIMAll);
+	}
+	(void) Tcl_SetServiceMode(oldMode);
+	framePtr = oldFramePtr;
+    } else {
+	Tcl_AppendResult(interp, "bad option \"", Tcl_GetString(objv[1]),
+		"\": must be done or wait", NULL);
+	return TCL_ERROR;
+    }
+    return TCL_OK;
+}
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * tab-width: 8
+ * End:
+ */
diff --git a/tcl8.6/unix/tclooConfig.sh b/tcl8.6/unix/tclooConfig.sh
new file mode 100644
index 0000000..2279542
--- /dev/null
+++ b/tcl8.6/unix/tclooConfig.sh
@@ -0,0 +1,19 @@
+# tclooConfig.sh --
+#
+# This shell script (for sh) is generated automatically by TclOO's configure
+# script, or would be except it has no values that we substitute. It will
+# create shell variables for most of the configuration options discovered by
+# the configure script. This script is intended to be included by TEA-based
+# configure scripts for TclOO extensions so that they don't have to figure
+# this all out for themselves.
+#
+# The information in this file is specific to a single platform.
+
+# These are mostly empty because no special steps are ever needed from Tcl 8.6
+# onwards; all libraries and include files are just part of Tcl.
+TCLOO_LIB_SPEC=""
+TCLOO_STUB_LIB_SPEC=""
+TCLOO_INCLUDE_SPEC=""
+TCLOO_PRIVATE_INCLUDE_SPEC=""
+TCLOO_CFLAGS=""
+TCLOO_VERSION=1.1.0