summaryrefslogtreecommitdiffstats
path: root/unix/configure.in
blob: 8891fa5e641fbde46907d6cceeda0eb2d136ee10 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
#! /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 Tk installation
dnl	to configure the system for the local environment.
#
# RCS: @(#) $Id: configure.in,v 1.167 2009/07/14 08:23:46 dkf Exp $

AC_INIT([tk],[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([tkConfig.h:../unix/tkConfig.h.in])
    AC_CONFIG_COMMANDS_PRE([DEFS="-DHAVE_TK_CONFIG_H  -imacros tkConfig.h"])
    AH_TOP([
    #ifndef _TKCONFIG
    #define _TKCONFIG])
    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 /* _TKCONFIG */])
])

TK_VERSION=8.6
TK_MAJOR_VERSION=8
TK_MINOR_VERSION=6
TK_PATCH_LEVEL="b1.1"
VERSION=${TK_VERSION}
LOCALES="cs da de el en en_gb eo es fr hu it nl pl pt ru sv"

#--------------------------------------------------------------------
# Find and load the tclConfig.sh file
#--------------------------------------------------------------------

SC_PATH_TCLCONFIG
SC_LOAD_TCLCONFIG

SC_PROG_TCLSH
SC_BUILD_TCLSH

#------------------------------------------------------------------------
# Handle the --prefix=... option
#------------------------------------------------------------------------

if test "${prefix}" = "NONE"; then
    prefix="$TCL_PREFIX"
fi
if test "${exec_prefix}" = "NONE"; then
    exec_prefix=$prefix
fi
# Make sure srcdir is fully qualified!
srcdir="`cd "$srcdir" ; pwd`"
TK_SRC_DIR="`cd "$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

# limits header checks must come early to prevent
# an autoconf bug that throws errors on configure
AC_CHECK_HEADER(limits.h,
    [AC_DEFINE(HAVE_LIMITS_H, 1, [Do we have <limits.h>?])],
    [AC_DEFINE(NO_LIMITS_H, 1, [Do we have <limits.h>?])])

#--------------------------------------------------------------------
# Supply a substitute for stdlib.h if it doesn't define strtol,
# strtoul, or strtod (which it doesn't in some versions of SunOS).
#--------------------------------------------------------------------

AC_CHECK_HEADER(stdlib.h, tk_ok=1, tk_ok=0)
AC_EGREP_HEADER(strtol, stdlib.h, , tk_ok=0)
AC_EGREP_HEADER(strtoul, stdlib.h, , tk_ok=0)
AC_EGREP_HEADER(strtod, stdlib.h, , tk_ok=0)
if test $tk_ok = 0; then
    AC_DEFINE(NO_STDLIB_H, 1, [Do we have <stdlib.h>?])
fi

#------------------------------------------------------------------------
# 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 - this auto-enables if Tcl was compiled threaded
#------------------------------------------------------------------------

SC_ENABLE_THREADS

# Add the threads support libraries
LIBS="$LIBS$THREADS_LIBS"

SC_ENABLE_SHARED

#--------------------------------------------------------------------
# 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

#--------------------------------------------------------------------
#	Detect what compiler flags to set for 64-bit support.
#--------------------------------------------------------------------

SC_TCL_EARLY_FLAGS

SC_TCL_64BIT_FLAGS

#--------------------------------------------------------------------
#	Check endianness because we can optimize some operations
#--------------------------------------------------------------------

AC_C_BIGENDIAN

#------------------------------------------------------------------------
# If Tcl and Tk are installed in different places, adjust the library
# search path to reflect this.
#------------------------------------------------------------------------

LIB_RUNTIME_DIR='${LIB_RUNTIME_DIR}'

if test "$TCL_EXEC_PREFIX" != "$exec_prefix"; then
    LIB_RUNTIME_DIR="${LIB_RUNTIME_DIR}:${TCL_EXEC_PREFIX}/lib"
fi

if test "$TCL_PREFIX" != "$prefix"; then
    AC_MSG_WARN([
        Different --prefix selected for Tk and Tcl!
        [[package require Tk]] may not work correctly in tclsh.])
fi

#--------------------------------------------------------------------
#	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)])
tk_ok=$tcl_cv_type_fd_set
if test $tk_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>?])
	tk_ok=yes
    fi
fi
if test $tk_ok = no; then
    AC_DEFINE(NO_FD_SET, 1, [Do we have fd_set?])
fi

#------------------------------------------------------------------------------
#       Find out all about time handling differences.
#------------------------------------------------------------------------------

AC_CHECK_HEADERS(sys/time.h)
AC_HEADER_TIME

#--------------------------------------------------------------------
#	Under Solaris 2.4, strtod returns the wrong value for the
#	terminating character under some conditions.  Check for this
#	and if the problem exists use a substitute procedure
#	"fixstrtod" (provided by Tcl) that corrects the error.
#--------------------------------------------------------------------

SC_BUGGY_STRTOD

#--------------------------------------------------------------------
#	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_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
])

#-------------------------------------------
#     In OS/390 struct pwd has no pw_gecos field
#-------------------------------------------

AC_CACHE_CHECK([pw_gecos in struct pwd], tcl_cv_pwd_pw_gecos, [
    AC_TRY_COMPILE([#include <pwd.h>],
	    [struct passwd pwd; pwd.pw_gecos;],
	    tcl_cv_pwd_pw_gecos=yes, tcl_cv_pwd_pw_gecos=no)])
if test $tcl_cv_pwd_pw_gecos = yes; then
    AC_DEFINE(HAVE_PW_GECOS, 1, [Does struct password have a pw_gecos field?])
fi

#--------------------------------------------------------------------
#	On Mac OS X, we can build either with X11 or with Aqua
#--------------------------------------------------------------------

MACOSX_SRC_DIR=macosx
if test "`uname -s`" = "Darwin" ; then
    AC_MSG_CHECKING([whether to use Aqua])
    AC_ARG_ENABLE(aqua,
	AC_HELP_STRING([--enable-aqua=yes|carbon|no],
	    [use Aqua windowingsystem on Mac OS X (default: no)]),
	[tk_aqua=$enableval], [tk_aqua=no])
    if test $tk_aqua = yes -o $tk_aqua = cocoa; then
	tk_aqua=yes
	if test ! -d /System/Library/Frameworks/Cocoa.framework; then
	    AC_MSG_WARN([Aqua can only be used when Cocoa is available])
	    tk_aqua=no
	fi
	if test "`uname -r | awk -F. '{print [$]1}'`" -lt 9; then
	    AC_MSG_WARN([Aqua requires Mac OS X 10.5 or later])
	    tk_aqua=no
	fi
    elif test $tk_aqua = carbon; then
	if test ! -d /System/Library/Frameworks/Carbon.framework; then
	    AC_MSG_WARN([Aqua can only be used when Carbon is available])
	    tk_aqua=no
	fi
	if test "`uname -r | awk -F. '{print [$]1}'`" -lt 6; then
	    AC_MSG_WARN([Aqua requires Mac OS X 10.2 or later])
	    tk_aqua=no
	fi
    else
	tk_aqua=no
    fi
    if test $tk_aqua != no -a $tcl_corefoundation = no; then
	AC_MSG_WARN([Aqua can only be used when CoreFoundation is available])
	tk_aqua=no
    fi
    if test $tk_aqua = carbon; then
	MACOSX_SRC_DIR=carbon
	AC_MSG_RESULT([yes (deprecated legacy Carbon implementation)])
    else
	AC_MSG_RESULT([$tk_aqua])
    fi
    if test "$fat_32_64" = yes; then
	if test $tk_aqua = no; then
	    AC_CACHE_CHECK([for 64-bit X11], tcl_cv_lib_x11_64, [
		for v in CFLAGS CPPFLAGS LDFLAGS; do
		    eval 'hold_'$v'="$'$v'";'$v'="`echo "$'$v' "|sed -e "s/-arch ppc / /g" -e "s/-arch i386 / /g"`"'
		done
		CPPFLAGS="$CPPFLAGS -I/usr/X11R6/include"
		LDFLAGS="$LDFLAGS -L/usr/X11R6/lib -lX11"
		AC_TRY_LINK([#include <X11/Xlib.h>], [XrmInitialize();], 
		    tcl_cv_lib_x11_64=yes, tcl_cv_lib_x11_64=no)
		for v in CFLAGS CPPFLAGS LDFLAGS; do
		    eval $v'="$hold_'$v'"'
		done])
	fi
	# remove 64-bit arch flags from CFLAGS et al. for combined 32 & 64 bit
	# fat builds if configuration does not support 64-bit.
	if test $tk_aqua = carbon -o "$tcl_cv_lib_x11_64" = no; then
	    AC_MSG_NOTICE([Removing 64-bit architectures from compiler & linker flags])
	    for v in CFLAGS CPPFLAGS LDFLAGS; do
		eval $v'="`echo "$'$v' "|sed -e "s/-arch ppc64 / /g" -e "s/-arch x86_64 / /g"`"'
	    done
	fi
    fi
    if test $tk_aqua = no; then
	# check if weak linking whole libraries is possible.
	AC_CACHE_CHECK([if ld accepts -weak-l flag], tcl_cv_ld_weak_l, [
	    hold_ldflags=$LDFLAGS
	    LDFLAGS="$LDFLAGS -Wl,-weak-lm"
	    AC_TRY_LINK([#include <math.h>], [double f = sin(1.0);],
		tcl_cv_ld_weak_l=yes, tcl_cv_ld_weak_l=no)
	    LDFLAGS=$hold_ldflags])
    fi
    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
else
    tk_aqua=no
fi

if test $tk_aqua != no; then
    if test $tk_aqua = yes; then
	LIBS="$LIBS -framework Cocoa -framework Carbon -framework IOKit"
	EXTRA_CC_SWITCHES='-std=gnu99 -x objective-c -fobjc-gc'
    else
	LIBS="$LIBS -framework Carbon -framework IOKit"
	CFLAGS="$CFLAGS -fpascal-strings"
    fi
    AC_DEFINE(MAC_OSX_TK, 1, [Are we building TkAqua?])
    TK_WINDOWINGSYSTEM=AQUA
    if test -n "${enable_symbols}" -a "${enable_symbols}" != no; then
        AC_DEFINE(TK_MAC_DEBUG, 1, [Are TkAqua debug messages enabled?])
    fi
else
    #--------------------------------------------------------------------
    #	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.
    #--------------------------------------------------------------------
    
    SC_PATH_X
    TK_WINDOWINGSYSTEM=X11
fi

#--------------------------------------------------------------------
#	Various manipulations on the search path used at runtime to
#	find shared libraries:
#	1. If the X library binaries are in a non-standard directory,
#	   add the X library location into that search path.
#	2. On systems such as AIX and Ultrix that use "-L" as the
#	   search path option, colons cannot be used to separate
#	   directories from each other. Change colons to " -L".
#	3. Create two sets of search flags, one for use in cc lines
#	   and the other for when the linker is invoked directly.  In
#	   the second case, '-Wl,' must be stripped off and commas must
#	   be replaced by spaces.
#--------------------------------------------------------------------

if test "x${x_libraries}" != "x"; then
    LIB_RUNTIME_DIR="${LIB_RUNTIME_DIR}:${x_libraries}"
fi
if test "${TCL_LD_SEARCH_FLAGS}" = '-L${LIB_RUNTIME_DIR}'; then
    LIB_RUNTIME_DIR=`echo ${LIB_RUNTIME_DIR} |sed -e 's/:/ -L/g'`
fi

#--------------------------------------------------------------------
#	Check for the existence of various libraries.  The order here
#	is important, so that then end up in the right order in the
#	command line generated by make.  The -lsocket and -lnsl libraries
#	require a couple of special tricks:
#	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.
#--------------------------------------------------------------------

if test $tk_aqua = no; then
    AC_CHECK_LIB(Xbsd, main, [LIBS="$LIBS -lXbsd"])
fi

#--------------------------------------------------------------------
# One more check related to the X libraries.  The standard releases
# of Ultrix don't support the "xauth" mechanism, so send won't work
# unless TK_NO_SECURITY is defined.  However, there are usually copies
# of the MIT X server available as well, which do support xauth.
# Check for the MIT stuff and use it if it exists.
#
# Note: can't use ac_check_lib macro (at least, not in Autoconf 2.1)
# because it can't deal with the "-" in the library name.
#--------------------------------------------------------------------

if test -d /usr/include/mit -a $tk_aqua = no; then
    AC_MSG_CHECKING([MIT X libraries])
    tk_oldCFlags=$CFLAGS
    CFLAGS="$CFLAGS -I/usr/include/mit"
    tk_oldLibs=$LIBS
    LIBS="$LIBS -lX11-mit"
    AC_TRY_LINK([
	#include <X11/Xlib.h>
    ], [
	XOpenDisplay(0);
    ], [
	AC_MSG_RESULT([yes])
	XLIBSW="-lX11-mit"
	XINCLUDES="-I/usr/include/mit"
    ], AC_MSG_RESULT([no]))
    CFLAGS=$tk_oldCFlags
    LIBS=$tk_oldLibs
fi

#--------------------------------------------------------------------
# Check whether the header and library for the XScreenSaver
# extension are available, and set HAVE_XSS if so.
# XScreenSaver is needed for Tk_GetUserInactiveTime().
#--------------------------------------------------------------------

if test $tk_aqua = no; then
    tk_oldCFlags=$CFLAGS
    CFLAGS="$CFLAGS $XINCLUDES"
    tk_oldLibs=$LIBS
    LIBS="$tk_oldLibs $XLIBSW"
    xss_header_found=no
    xss_lib_found=no
    AC_MSG_CHECKING([whether to try to use XScreenSaver])
    AC_ARG_ENABLE(xss,
	AC_HELP_STRING([--enable-xss],
	    [use XScreenSaver for activity timer (default: on)]),
	[enable_xss=$enableval], [enable_xss=yes])
    if test "$enable_xss" = "no" ; then
	AC_MSG_RESULT([$enable_xss])
    else
	AC_MSG_RESULT([$enable_xss])
	AC_CHECK_HEADER(X11/extensions/scrnsaver.h, [
	    xss_header_found=yes
	],,[#include <X11/Xlib.h>])
	AC_CHECK_FUNC(XScreenSaverQueryInfo,,[
	    AC_CHECK_LIB(Xext, XScreenSaverQueryInfo, [
		XLIBSW="$XLIBSW -lXext"
		xss_lib_found=yes
	    ], [
		AC_CHECK_LIB(Xss, XScreenSaverQueryInfo, [
		    if test "$tcl_cv_ld_weak_l" = yes; then
			# On Darwin, weak link libXss if possible,
			# as it is only available on Tiger or later.
			XLIBSW="$XLIBSW -Wl,-weak-lXss -lXext"
		    else
			XLIBSW="$XLIBSW -lXss -lXext"
		    fi
		    xss_lib_found=yes
		],, -lXext)
	    ])
	])
    fi
    if test $enable_xss = yes -a $xss_lib_found = yes -a $xss_header_found = yes; then
	AC_DEFINE(HAVE_XSS, 1, [Is XScreenSaver available?])
    fi
    CFLAGS=$tk_oldCFlags
    LIBS=$tk_oldLibs
fi

#--------------------------------------------------------------------
#	Check for freetype / fontconfig / Xft support.
#--------------------------------------------------------------------

if test $tk_aqua = no; then
    AC_MSG_CHECKING([whether to use xft])
    AC_ARG_ENABLE(xft,
	AC_HELP_STRING([--enable-xft],
	    [use freetype/fontconfig/xft (default: on)]),
	[enable_xft=$enableval], [enable_xft="default"])
    XFT_CFLAGS=""
    XFT_LIBS=""
    if test "$enable_xft" = "no" ; then
	AC_MSG_RESULT([$enable_xft])
    else
	found_xft="yes"
	dnl make sure package configurator (xft-config or pkg-config
	dnl says that xft is present.
	XFT_CFLAGS=`xft-config --cflags 2>/dev/null` || found_xft="no"
	XFT_LIBS=`xft-config --libs 2>/dev/null` || found_xft="no"
	if test "$found_xft" = "no" ; then
	    found_xft=yes
	    XFT_CFLAGS=`pkg-config --cflags xft 2>/dev/null` || found_xft="no"
	    XFT_LIBS=`pkg-config --libs xft 2>/dev/null` || found_xft="no"
	fi
	AC_MSG_RESULT([$found_xft])
	dnl make sure that compiling against Xft header file doesn't bomb
	if test "$found_xft" = "yes" ; then
	    tk_oldCFlags=$CFLAGS
	    CFLAGS="$CFLAGS $XINCLUDES $XFT_CFLAGS"
	    tk_oldLibs=$LIBS
	    LIBS="$tk_oldLIBS $XFT_LIBS $XLIBSW"
	    AC_CHECK_HEADER(X11/Xft/Xft.h, [], [
		found_xft=no
	    ],[#include <X11/Xlib.h>])
	    CFLAGS=$tk_oldCFlags
	    LIBS=$tk_oldLibs
	fi
	dnl make sure that linking against Xft libraries finds freetype
	if test "$found_xft" = "yes" ; then
	    tk_oldCFlags=$CFLAGS
	    CFLAGS="$CFLAGS $XINCLUDES $XFT_CFLAGS"
	    tk_oldLibs=$LIBS
	    LIBS="$tk_oldLIBS $XFT_LIBS $XLIBSW"
	    AC_CHECK_LIB(Xft, FT_New_Face, [], [
		found_xft=no
	    ])
	    CFLAGS=$tk_oldCFlags
	    LIBS=$tk_oldLibs
	fi
	dnl print a warning if xft is unusable and was specifically requested
	if test "$found_xft" = "no" ; then
	    if test "$enable_xft" = "yes" ; then
		AC_MSG_WARN([Can't find xft configuration, or xft is unusable])
	    fi
	    enable_xft=no
	    XFT_CFLAGS=""
	    XFT_LIBS=""
	else
            enable_xft=yes
	fi
    fi
    if test $enable_xft = "yes" ; then
	UNIX_FONT_OBJS=tkUnixRFont.o
	AC_DEFINE(HAVE_XFT, 1, [Have we turned on XFT (antialiased fonts)?])
    else
	UNIX_FONT_OBJS=tkUnixFont.o
    fi
    AC_SUBST(XFT_CFLAGS)
    AC_SUBST(XFT_LIBS)
    AC_SUBST(UNIX_FONT_OBJS)
fi

#--------------------------------------------------------------------
#	Figure out whether "char" is unsigned.  If so, set a
#	#define for __CHAR_UNSIGNED__.
#--------------------------------------------------------------------

AC_C_CHAR_UNSIGNED

#--------------------------------------------------------------------
#	The statements below define a collection of symbols related to
#	building libtk as a shared library instead of a static library.
#--------------------------------------------------------------------

eval eval "TK_UNSHARED_LIB_SUFFIX=${UNSHARED_LIB_SUFFIX}"
eval eval "TK_SHARED_LIB_SUFFIX=${SHARED_LIB_SUFFIX}"
eval "TK_LIB_FILE=libtk${LIB_SUFFIX}"

# tkConfig.sh needs a version of the _LIB_SUFFIX that has been eval'ed
# since on some platforms TK_LIB_FILE contains shell escapes. 

eval "TK_LIB_FILE=${TK_LIB_FILE}"

if test "${SHARED_BUILD}" = "1" -a "${SHLIB_SUFFIX}" != ""; then
    SHLIB_LD_LIBS="${SHLIB_LD_LIBS} \${TCL_STUB_LIB_SPEC}"
    TCL_STUB_FLAGS="-DUSE_TCL_STUBS"
fi

TK_LIBRARY='$(prefix)/lib/tk$(VERSION)'
PRIVATE_INCLUDE_DIR='$(includedir)'
HTML_DIR='$(DISTDIR)/html'
TK_PKG_DIR='tk$(VERSION)'
TK_RSRC_FILE='tk$(VERSION).rsrc'
WISH_RSRC_FILE='wish$(VERSION).rsrc'

# 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
    TK_SHLIB_LD_EXTRAS="-compatibility_version ${TK_VERSION} -current_version ${TK_VERSION}`echo ${TK_PATCH_LEVEL} | awk ['{match($0, "\\\.[0-9]+"); print substr($0,RSTART,RLENGTH)}']`"
    TK_SHLIB_LD_EXTRAS="${TK_SHLIB_LD_EXTRAS}"' -install_name "${DYLIB_INSTALL_DIR}"/${TK_LIB_FILE}'
    if test $tk_aqua = yes; then
	TK_SHLIB_LD_EXTRAS="${TK_SHLIB_LD_EXTRAS}"' -unexported_symbols_list $$(f=$(TK_LIB_FILE).E && nm -gp tkMacOSX*.o 2>/dev/null | awk "/^[[0-9a-f]]+ . \.objc/ {print \$$3}" > $$f && echo $$f)'
    fi
    echo "$LDFLAGS " | grep -q -- '-prebind ' && TK_SHLIB_LD_EXTRAS="${TK_SHLIB_LD_EXTRAS}"' -seg1addr 0xb000000'
    TK_SHLIB_LD_EXTRAS="${TK_SHLIB_LD_EXTRAS}"' -sectcreate __TEXT __info_plist Tk-Info.plist'
    EXTRA_WISH_LIBS='-sectcreate __TEXT __info_plist Wish-Info.plist'
    EXTRA_APP_CC_SWITCHES="${EXTRA_APP_CC_SWITCHES}"' -mdynamic-no-pic'
    AC_CONFIG_FILES([Tk-Info.plist:../${MACOSX_SRC_DIR}/Tk-Info.plist.in Wish-Info.plist:../${MACOSX_SRC_DIR}/Wish-Info.plist.in])
    for l in ${LOCALES}; do CFBUNDLELOCALIZATIONS="${CFBUNDLELOCALIZATIONS}<string>$l</string>"; done
    TK_YEAR="`date +%Y`"
fi

if test "$FRAMEWORK_BUILD" = "1" ; then
    AC_DEFINE(TK_FRAMEWORK, 1, [Is Tk built as a framework?])
    # Construct a fake local framework structure to make linking with
    # '-framework Tk' and running of tktest work
    AC_CONFIG_COMMANDS([Tk.framework], [n=Tk &&
        f=$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 &&
        if test $tk_aqua != no; then ln -s ../../../../$n.rsrc $f/$v/Resources; fi &&
        unset n f v
    ], VERSION=${TK_VERSION} && tk_aqua=${tk_aqua})
    LD_LIBRARY_PATH_VAR="DYLD_FRAMEWORK_PATH"
    if test "${libdir}" = '${exec_prefix}/lib'; then
        # override libdir default
        libdir="/Library/Frameworks"
    fi
    TK_LIB_FILE="Tk"
    TK_LIB_FLAG="-framework Tk"
    TK_BUILD_LIB_SPEC="-F`pwd | sed -e 's/ /\\\\ /g'` -framework Tk"
    TK_LIB_SPEC="-F${libdir} -framework Tk"
    libdir="${libdir}/Tk.framework/Versions/\${VERSION}"
    TK_LIBRARY="${libdir}/Resources/Scripts"
    TK_PKG_DIR="Resources/Scripts"
    TK_RSRC_FILE="Tk.rsrc"
    WISH_RSRC_FILE="Wish.rsrc"
    includedir="${libdir}/Headers"
    PRIVATE_INCLUDE_DIR="${libdir}/PrivateHeaders"
    HTML_DIR="${libdir}/Resources/Documentation/Reference/Tk"
    EXTRA_INSTALL="install-private-headers html-tk"
    EXTRA_BUILD_HTML='@ln -fs contents.htm "$(HTML_INSTALL_DIR)"/TkTOC.html' 
    EXTRA_INSTALL_BINARIES='@echo "Installing Info.plist to $(LIB_INSTALL_DIR)/Resources" && mkdir -p "$(LIB_INSTALL_DIR)/Resources" && $(INSTALL_DATA) Tk-Info.plist "$(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"'
    if test $tk_aqua != no; then
	if test $tk_aqua = yes; then
	    EXTRA_INSTALL_BINARIES="$EXTRA_INSTALL_BINARIES"' && echo "Installing Images to $(LIB_INSTALL_DIR)/Resources" && mkdir -p "$(LIB_INSTALL_DIR)/Resources" && for i in Tk.tiff Tk.icns; do $(INSTALL_DATA) "$(MAC_OSX_DIR)/$$i" "$(LIB_INSTALL_DIR)/Resources"; done'
	else
	    EXTRA_INSTALL_BINARIES="$EXTRA_INSTALL_BINARIES"' && echo "Installing ${TK_RSRC_FILE} to $(LIB_INSTALL_DIR)/Resources" && mkdir -p "$(LIB_INSTALL_DIR)/Resources" && $(INSTALL_DATA) "${TK_RSRC_FILE}" "$(LIB_INSTALL_DIR)/Resources"'
        fi
        EXTRA_INSTALL_BINARIES="$EXTRA_INSTALL_BINARIES"' && echo "Installing wish$(VERSION) script to $(INSTALL_ROOT)/'"${bindir}"'" && mkdir -p "$(INSTALL_ROOT)/'"${bindir}"'" && printf > "$(INSTALL_ROOT)/'"${bindir}"'/wish$(VERSION)" "#!/bin/sh\n\"\$$(dirname \$$0)'"`eval d="${bindir}"; echo "$d" | sed -e 's#/[^/][^/]*#/..#g'`"'$(bindir)/Wish\" \"\$$@\"" && chmod +x "$(INSTALL_ROOT)/'"${bindir}"'/wish$(VERSION)"'
        bindir="${libdir}/Resources/Wish.app/Contents/MacOS"
        EXTRA_INSTALL_BINARIES="$EXTRA_INSTALL_BINARIES"' && echo "Installing Info.plist to $(BIN_INSTALL_DIR)/.." && $(INSTALL_DATA) Wish-Info.plist "$(BIN_INSTALL_DIR)/../Info.plist" && mv -f "$(BIN_INSTALL_DIR)/wish$(VERSION)" "$(BIN_INSTALL_DIR)/Wish"'
        EXTRA_INSTALL_BINARIES="$EXTRA_INSTALL_BINARIES"' && echo "Installing Wish.icns to $(BIN_INSTALL_DIR)/../Resources" && mkdir -p "$(BIN_INSTALL_DIR)/../Resources"'
	if test $tk_aqua = yes; then
	    EXTRA_INSTALL_BINARIES="$EXTRA_INSTALL_BINARIES"' && $(INSTALL_DATA) "$(MAC_OSX_DIR)/Tk.icns" "$(BIN_INSTALL_DIR)/../Resources/Wish.icns"'
	else
	    EXTRA_INSTALL_BINARIES="$EXTRA_INSTALL_BINARIES"' && $(INSTALL_DATA) "$(MAC_OSX_DIR)/Wish.icns" "$(BIN_INSTALL_DIR)/../Resources" && echo "Installing ${WISH_RSRC_FILE} to $(BIN_INSTALL_DIR)/../Resources" && $(INSTALL_DATA) "${WISH_RSRC_FILE}" "$(BIN_INSTALL_DIR)/../Resources"'
        fi
    fi
    EXTRA_INSTALL_BINARIES="$EXTRA_INSTALL_BINARIES"' && echo "Finalizing Tk.framework" && rm -f "$(LIB_INSTALL_DIR)/../Current" && ln -s "$(VERSION)" "$(LIB_INSTALL_DIR)/../Current" && for f in "$(LIB_FILE)" tkConfig.sh Resources Headers PrivateHeaders; do rm -f "$(LIB_INSTALL_DIR)/../../$$f" && ln -s "Versions/Current/$$f" "$(LIB_INSTALL_DIR)/../.."; done && f="$(STUB_LIB_FILE)" && rm -f "$(LIB_INSTALL_DIR)/../../$$f" && ln -s "Versions/$(VERSION)/$$f" "$(LIB_INSTALL_DIR)/../.."'
    # Don't use AC_DEFINE for the following as the framework version define 
    # needs to go into the Makefile even when using autoheader, so that we  
    # can pick up a potential make override of VERSION. Also, don't put this
    # into CFLAGS as it should not go into tkConfig.sh
    EXTRA_CC_SWITCHES="$EXTRA_CC_SWITCHES"' -DTK_FRAMEWORK_VERSION=\"$(VERSION)\"'
else
    if test $tk_aqua = yes; then
        EXTRA_INSTALL_BINARIES='@echo "Installing Images to $(LIB_INSTALL_DIR)" && mkdir -p "$(LIB_INSTALL_DIR)" && for i in Tk.tiff Tk.icns; do $(INSTALL_DATA) "$(MAC_OSX_DIR)/$$i" "$(LIB_INSTALL_DIR)"; done'
    fi
    # libdir must be a fully qualified path and not ${exec_prefix}/lib
    eval libdir="$libdir"
    if test "$SHARED_BUILD" = "0" || test "$TCL_NEEDS_EXP_FILE" = "0"; then
        if test "${TCL_LIB_VERSIONS_OK}" = "ok"; then
            TK_LIB_FLAG="-ltk${TK_VERSION}"
        else
            TK_LIB_FLAG="-ltk`echo ${TK_VERSION} | tr -d .`"
        fi
        TK_BUILD_LIB_SPEC="-L`pwd | sed -e 's/ /\\\\ /g'` ${TK_LIB_FLAG}"
        TK_LIB_SPEC="-L${libdir} ${TK_LIB_FLAG}"
    else
        TK_BUILD_EXP_FILE="lib.exp"
        eval "TK_EXP_FILE=libtk${TCL_EXPORT_FILE_SUFFIX}"
    
        if test "$GCC" = "yes" ; then
            TK_BUILD_LIB_SPEC="-Wl,-bI:`pwd | sed -e 's/ /\\\\ /g'`/${TK_BUILD_EXP_FILE} -L`pwd | sed -e 's/ /\\\\ /g'`"
            TK_LIB_SPEC="-Wl,-bI:${libdir}/${TK_EXP_FILE} -L${libdir}"
        else
            TK_BUILD_LIB_SPEC="-bI:`pwd | sed -e 's/ /\\\\ /g'`/${TK_BUILD_EXP_FILE}"
            TK_LIB_SPEC="-bI:${libdir}/${TK_EXP_FILE}"
        fi
    fi
fi

# Extra bits for legacy Aqua Carbon build (carbon sources and resource files)
if test $tk_aqua = carbon; then
    EXTRA_AQUA_OBJS='tkMacOSXCarbonEvents.o'
    EXTRA_AQUA_SRCS='$(TOP_DIR)/carbon/tkMacOSXCarbonEvents.c'
    LIB_RSRC_FILE='${TK_RSRC_FILE}'
    APP_RSRC_FILE='${WISH_RSRC_FILE}'
    REZ=/Developer/Tools/Rez
    REZ_FLAGS='-d "SystemSevenOrLater=1" -useDF -ro'
    if test "$SHARED_BUILD" = 0; then
	EXTRA_INSTALL_BINARIES='@echo "Installing $(TK_RSRC_FILE) to $(LIB_INSTALL_DIR)" && $(INSTALL_DATA) $(TK_RSRC_FILE) "$(LIB_INSTALL_DIR)"'
	TK_BUILD_LIB_SPEC="$TK_BUILD_LIB_SPEC -sectcreate __TEXT __tk_rsrc `pwd | sed -e 's/ /\\\\ /g'`/\${TK_RSRC_FILE}"
	TK_LIB_SPEC="$TK_LIB_SPEC -sectcreate __TEXT __tk_rsrc ${libdir}/\${TK_RSRC_FILE}"
    else
        TK_SHLIB_LD_EXTRAS="$TK_SHLIB_LD_EXTRAS -sectcreate __TEXT __tk_rsrc \${TK_RSRC_FILE}"
    fi
fi

#--------------------------------------------------------------------
#       The statements below define various symbols relating to Tk
#       stub support.
#--------------------------------------------------------------------

# Replace ${VERSION} with contents of ${TK_VERSION}
eval "TK_STUB_LIB_FILE=libtkstub${TK_UNSHARED_LIB_SUFFIX}"
eval "TK_STUB_LIB_DIR=${libdir}"

if test "${TCL_LIB_VERSIONS_OK}" = "ok"; then
    TK_STUB_LIB_FLAG="-ltkstub${TK_VERSION}"
else
    TK_STUB_LIB_FLAG="-ltkstub`echo ${TK_VERSION} | tr -d .`"
fi

TK_BUILD_STUB_LIB_SPEC="-L`pwd | sed -e 's/ /\\\\ /g'` ${TK_STUB_LIB_FLAG}"
TK_STUB_LIB_SPEC="-L${TK_STUB_LIB_DIR} ${TK_STUB_LIB_FLAG}"
TK_BUILD_STUB_LIB_PATH="`pwd`/${TK_STUB_LIB_FILE}"
TK_STUB_LIB_PATH="${TK_STUB_LIB_DIR}/${TK_STUB_LIB_FILE}"

# Install time header dir can be set via --includedir
eval "TK_INCLUDE_SPEC=\"-I${includedir}\""

#------------------------------------------------------------------------
# tkConfig.sh refers to this by a different name
#------------------------------------------------------------------------

TK_SHARED_BUILD=${SHARED_BUILD}

AC_SUBST(TK_VERSION)
AC_SUBST(TK_MAJOR_VERSION)
AC_SUBST(TK_MINOR_VERSION)
AC_SUBST(TK_PATCH_LEVEL)
AC_SUBST(TK_YEAR)

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)
AC_SUBST(TK_STUB_LIB_PATH)
AC_SUBST(TK_INCLUDE_SPEC)
AC_SUBST(TK_BUILD_STUB_LIB_SPEC)
AC_SUBST(TK_BUILD_STUB_LIB_PATH)

AC_SUBST(TK_SRC_DIR)

AC_SUBST(TK_SHARED_BUILD)
AC_SUBST(LD_LIBRARY_PATH_VAR)

AC_SUBST(TK_BUILD_LIB_SPEC)
AC_SUBST(TK_BUILD_EXP_FILE)
AC_SUBST(TK_EXP_FILE)

AC_SUBST(TCL_STUB_FLAGS)
AC_SUBST(XINCLUDES)
AC_SUBST(XLIBSW)
AC_SUBST(LOCALES)

AC_SUBST(TK_WINDOWINGSYSTEM)
AC_SUBST(TK_PKG_DIR)
AC_SUBST(TK_LIBRARY)
AC_SUBST(PRIVATE_INCLUDE_DIR)
AC_SUBST(HTML_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_WISH_LIBS)
AC_SUBST(EXTRA_AQUA_OBJS)
AC_SUBST(EXTRA_AQUA_SRCS)
AC_SUBST(CFBUNDLELOCALIZATIONS)

AC_SUBST(MACOSX_SRC_DIR)
AC_SUBST(TK_RSRC_FILE)
AC_SUBST(WISH_RSRC_FILE)
AC_SUBST(LIB_RSRC_FILE)
AC_SUBST(APP_RSRC_FILE)
AC_SUBST(REZ)
AC_SUBST(REZ_FLAGS)

AC_CONFIG_FILES([
    Makefile:../unix/Makefile.in
    tkConfig.sh:../unix/tkConfig.sh.in
    tk.pc:../unix/tk.pc.in
])
AC_OUTPUT