summaryrefslogtreecommitdiffstats
path: root/unix/configure.in
blob: 478428c4cecbc639df3963e222299b3568ce145b (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
#! /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.
#
# RCS: @(#) $Id: configure.in,v 1.106.2.45 2008/08/13 23:07:27 das Exp $

AC_INIT(../generic/tcl.h)
AC_PREREQ(2.13)

TCL_VERSION=8.4
TCL_MAJOR_VERSION=8
TCL_MINOR_VERSION=4
TCL_PATCH_LEVEL=".19"
VERSION=${TCL_VERSION}

#------------------------------------------------------------------------
# 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([tcl])

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

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

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

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

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

TCL_DBGX=${DBGX}

#--------------------------------------------------------------------
#	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)])
# 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(opendir strstr strtol strtoll strtoull tmpnam waitpid)
AC_CHECK_FUNC(strerror, , [AC_DEFINE(NO_STRERROR)])
AC_CHECK_FUNC(getwd, , [AC_DEFINE(NO_GETWD)])
AC_CHECK_FUNC(wait3, , [AC_DEFINE(NO_WAIT3)])
AC_CHECK_FUNC(uname, , [AC_DEFINE(NO_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)])

#--------------------------------------------------------------------
#	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 the TSD instead of the static storage.
	AC_DEFINE(HAVE_MTSAFE_GETHOSTBYNAME)
	AC_DEFINE(HAVE_MTSAFE_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)
	AC_DEFINE(HAVE_MTSAFE_GETHOSTBYADDR)
    else
	SC_TCL_GETHOSTBYNAME_R
	SC_TCL_GETHOSTBYADDR_R
    fi
fi

#---------------------------------------------------------------------------
#	Determine which interface to use to talk to the serial port.
#	Note that #include lines must begin in leftmost column for
#	some compilers to recognize them as preprocessor directives.
#---------------------------------------------------------------------------

SC_SERIAL_PORT

#--------------------------------------------------------------------
#	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)
	tcl_ok=yes
    fi
fi
if test $tcl_ok = no; then
    AC_DEFINE(NO_FD_SET)
fi

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

SC_TIME_HANDLER

#--------------------------------------------------------------------
#	Some systems (e.g., IRIX 4.0.5) lack the st_blksize field
#	in struct stat.  But we might be able to use fstatfs instead.
#--------------------------------------------------------------------
AC_STRUCT_ST_BLKSIZE
AC_CHECK_FUNC(fstatfs, , [AC_DEFINE(NO_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) AC_DEFINE(NO_STRING_H)])

#--------------------------------------------------------------------
#	On some systems strstr is broken: it returns a pointer even
#	even if the original string is empty.
#--------------------------------------------------------------------
dnl only run if AC_REPLACE_FUNCS(strstr) hasn't already added strstr.o
if test "x${ac_cv_func_strstr}" = "xyes"; then
    AC_CACHE_CHECK([proper strstr implementation], tcl_cv_strstr_unbroken, [
	AC_TRY_RUN([
	extern int strstr();
	int main()
	{
	    exit(strstr("\0test", "test") ? 1 : 0);
	}], tcl_cv_strstr_unbroken=ok, tcl_cv_strstr_unbroken=broken,
	    tcl_cv_strstr_unbroken=broken)])
    if test $tcl_cv_strstr_unbroken = broken; then
        LIBOBJS="$LIBOBJS strstr.o"
    fi
fi

#--------------------------------------------------------------------
#	Check for strtoul function.  This is tricky because under some
#	versions of AIX strtoul returns an incorrect terminator
#	pointer for the string "0".
#--------------------------------------------------------------------

AC_CHECK_FUNC(strtoul, tcl_ok=1, tcl_ok=0)
if test $tcl_ok = 1; then
    AC_CACHE_CHECK([proper strtoul implementation], tcl_cv_strtoul_unbroken, [
	AC_TRY_RUN([
	extern int strtoul();
	int main()
	{
	    char *string = "0";
	    char *term;
	    int value;
	    value = strtoul(string, &term, 0);
	    if ((value != 0) || (term != (string+1))) {
		exit(1);
	    }
	    exit(0);
	}], tcl_cv_strtoul_unbroken=ok , tcl_cv_strtoul_unbroken=broken,
	    tcl_cv_strtoul_unbroken=broken)])
    if test $tcl_cv_strtoul_unbroken = broken; then
	tcl_ok=0
    fi
fi
if test $tcl_ok = 0; then
    LIBOBJS="$LIBOBJS strtoul.o"
fi

#--------------------------------------------------------------------
#	Check for the strtod function.  This is tricky because in some
#	versions of Linux strtod mis-parses strings starting with "+".
#--------------------------------------------------------------------

AC_CHECK_FUNC(strtod, tcl_ok=1, tcl_ok=0)
if test $tcl_ok = 1; then
    AC_CACHE_CHECK([proper strtod implementation], tcl_cv_strtod_unbroken, [
	AC_TRY_RUN([
	extern double strtod();
	int main()
	{
	    char *string = " +69";
	    char *term;
	    double value;
	    value = strtod(string, &term);
	    if ((value != 69) || (term != (string+4))) {
		exit(1);
	    }
	    exit(0);
	}], tcl_cv_strtod_unbroken=ok , tcl_cv_strtod_unbroken=broken,
	    tcl_cv_strtod_unbroken=broken)])
    if test $tcl_cv_strtod_unbroken = broken; then
	tcl_ok=0
    fi
fi
if test $tcl_ok = 0; then
    LIBOBJS="$LIBOBJS strtod.o"
fi

#--------------------------------------------------------------------
#	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" 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_CACHE_CHECK([for socklen_t], ac_cv_type_socklen_t, [
    AC_EGREP_CPP(changequote(<<,>>)dnl
<<(^|[^a-zA-Z_0-9])socklen_t[^a-zA-Z_0-9]>>dnl
changequote([,]),[
    #include <sys/types.h>
    #include <sys/socket.h>
    #if STDC_HEADERS
    #include <stdlib.h>
    #include <stddef.h>
    #endif
    ], ac_cv_type_socklen_t=yes, ac_cv_type_socklen_t=no)])
if test $ac_cv_type_socklen_t = no; then
    AC_DEFINE(socklen_t, unsigned)
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)])

#--------------------------------------------------------------------
#	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)
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 "$tcl_ok" = 0; then
    LIBOBJS="$LIBOBJS strncasecmp.o"
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. SGI systems don't use the BSD form of the gettimeofday function,
#	   but they have a BSDgettimeofday function that can be used instead.
#	3. 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(BSDgettimeofday,
    [AC_DEFINE(HAVE_BSDGETTIMEOFDAY)], [
    AC_CHECK_FUNC(gettimeofday, , [AC_DEFINE(NO_GETTOD)])
])
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)
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)
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)
fi

#--------------------------------------------------------------------
# Check for support of nl_langinfo function
#--------------------------------------------------------------------

SC_ENABLE_LANGINFO

#--------------------------------------------------------------------
# Darwin specific API checks and defines
#--------------------------------------------------------------------

if test "`uname -s`" = "Darwin" ; then
    AC_CHECK_HEADERS(copyfile.h)
    AC_CHECK_FUNCS(copyfile)
    if test $tcl_corefoundation = yes; then
	AC_CHECK_HEADERS(libkern/OSAtomic.h)
	AC_CHECK_FUNCS(OSSpinLockLock)
	AC_CHECK_FUNCS(pthread_atfork)
    fi
    AC_DEFINE(USE_VFORK)
    AC_DEFINE(TCL_DEFAULT_ENCODING, "utf-8")
    AC_DEFINE(TCL_LOAD_FROM_MEMORY)
    AC_CHECK_HEADERS(AvailabilityMacros.h)
    if test "$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)
	fi
    fi
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)
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

#--------------------------------------------------------------------
#	DTrace support
#--------------------------------------------------------------------

AC_ARG_ENABLE(dtrace,
    [  --enable-dtrace         build with DTrace support [--disable-dtrace]],
    [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 $tcl_ok = yes; then
    AC_DEFINE(USE_DTRACE)
    DTRACE_SRC="\${DTRACE_SRC}"
    DTRACE_HDR="\${DTRACE_HDR}"
    if test "`uname -s`" != "Darwin" ; then
	DTRACE_OBJ="\${DTRACE_OBJ}"
	if test "`uname -s`" = "SunOS" -a "$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 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
# so that the backslashes quoting the DBX braces are dropped.

# Trick to replace DBGX with TCL_DBGX
DBGX='${TCL_DBGX}'
eval "TCL_LIB_FILE=${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="${TCL_SHLIB_LD_EXTRAS}"' -sectcreate __TEXT __info_plist Tcl-Info.plist'
    EXTRA_TCLSH_LIBS='-sectcreate __TEXT __info_plist Tclsh-Info.plist'
    EXTRA_APP_CC_SWITCHES='-mdynamic-no-pic'
    tcl_config_files="${tcl_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 "$FRAMEWORK_BUILD" = "1" ; then
    AC_DEFINE(TCL_FRAMEWORK)
    # Construct a fake local framework structure to make linking with
    # '-framework Tcl' and running of tcltest work
    AC_OUTPUT_COMMANDS([test "$FRAMEWORK_BUILD" = "1" && n=Tcl &&
	f=$n.framework && v=Versions/$VERSION &&
	echo "creating $f" && 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=${TCL_VERSION} FRAMEWORK_BUILD=${FRAMEWORK_BUILD}])
    LD_LIBRARY_PATH_VAR="DYLD_FRAMEWORK_PATH"
    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` -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 $(LIB_INSTALL_DIR)/Resources" && mkdir -p "$(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"
    if test "$SHARED_BUILD" = "0" || test "$TCL_NEEDS_EXP_FILE" = "0"; then
        if test "${TCL_LIB_VERSIONS_OK}" = "ok"; then
            TCL_LIB_FLAG="-ltcl${TCL_VERSION}\${TCL_DBGX}"
        else
            TCL_LIB_FLAG="-ltcl`echo ${TCL_VERSION} | tr -d .`\${TCL_DBGX}"
        fi
        TCL_BUILD_LIB_SPEC="-L`pwd` ${TCL_LIB_FLAG}"
        TCL_LIB_SPEC="-L${libdir} ${TCL_LIB_FLAG}"
    else
        TCL_BUILD_EXP_FILE="lib.exp"
        eval "TCL_EXP_FILE=libtcl${TCL_EXPORT_FILE_SUFFIX}"
    
        # Replace DBGX with TCL_DBGX
        eval "TCL_EXP_FILE=\"${TCL_EXP_FILE}\""
        
        if test "$GCC" = "yes" ; then
            TCL_BUILD_LIB_SPEC="-Wl,-bI:`pwd`/${TCL_BUILD_EXP_FILE} -L`pwd`"
            TCL_LIB_SPEC="-Wl,-bI:${libdir}/${TCL_EXP_FILE} -L`pwd`"
        else
            TCL_BUILD_LIB_SPEC="-bI:`pwd`/${TCL_BUILD_EXP_FILE}"
            TCL_LIB_SPEC="-bI:${libdir}/${TCL_EXP_FILE}"
        fi
    fi
fi
VERSION='${VERSION}'
eval "CFG_TCL_SHARED_LIB_SUFFIX=${TCL_SHARED_LIB_SUFFIX}"
eval "CFG_TCL_UNSHARED_LIB_SUFFIX=${TCL_UNSHARED_LIB_SUFFIX}"
eval "CFG_TCL_EXPORT_FILE_SUFFIX=${TCL_EXPORT_FILE_SUFFIX}"
VERSION=${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 /Network/Library/Tcl /System/Library/Tcl ~/Library/Frameworks /Library/Frameworks /Network/Library/Frameworks /System/Library/Frameworks"
elif test "$prefix" != "$exec_prefix"; 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 ${TCL_VERSION}
eval "TCL_STUB_LIB_FILE=libtclstub${TCL_UNSHARED_LIB_SUFFIX}"
# Replace DBGX with TCL_DBGX
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}\${TCL_DBGX}"
else
    TCL_STUB_LIB_FLAG="-ltclstub`echo ${TCL_VERSION} | tr -d .`\${TCL_DBGX}"
fi

TCL_BUILD_STUB_LIB_SPEC="-L`pwd` ${TCL_STUB_LIB_FLAG}"
TCL_STUB_LIB_SPEC="-L${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(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(TCL_DBGX)
AC_SUBST(CFG_TCL_SHARED_LIB_SUFFIX)
AC_SUBST(CFG_TCL_UNSHARED_LIB_SUFFIX)
AC_SUBST(CFG_TCL_EXPORT_FILE_SUFFIX)

AC_SUBST(TCL_SHARED_BUILD)
AC_SUBST(LD_LIBRARY_PATH_VAR)

AC_SUBST(TCL_BUILD_LIB_SPEC)
AC_SUBST(TCL_NEEDS_EXP_FILE)
AC_SUBST(TCL_BUILD_EXP_FILE)
AC_SUBST(TCL_EXP_FILE)

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(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_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_TCLSH_LIBS)

SC_OUTPUT_COMMANDS_PRE

tcl_config_files="${tcl_config_files} [Makefile dltest/Makefile tclConfig.sh]"
AC_OUTPUT([${tcl_config_files}])