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Subversion Repositories openrisc_2011-10-31

[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.2.2/] [libiberty/] [configure.ac] - Blame information for rev 277

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Line No. Rev Author Line
1 38 julius
dnl Process this file with autoconf to produce a configure script
2
 
3
AC_PREREQ(2.59)
4
AC_INIT
5
AC_CONFIG_SRCDIR([xmalloc.c])
6
 
7
# This works around the fact that libtool configuration may change LD
8
# for this particular configuration, but some shells, instead of
9
# keeping the changes in LD private, export them just because LD is
10
# exported.  We don't use libtool yet, but some day we might, so...
11
ORIGINAL_LD_FOR_MULTILIBS=$LD
12
 
13
dnl We use these options to decide which functions to include.
14
AC_ARG_WITH(target-subdir,
15
[  --with-target-subdir=SUBDIR      Configuring in a subdirectory for target])
16
AC_ARG_WITH(build-subdir,
17
[  --with-build-subdir=SUBDIR       Configuring in a subdirectory for build])
18
AC_ARG_WITH(cross-host,
19
[  --with-cross-host=HOST           Configuring with a cross compiler])
20
AC_ARG_WITH(newlib,
21
[  --with-newlib                    Configuring with newlib])
22
 
23
if test "${srcdir}" = "."; then
24
  if test -n "${with_build_subdir}"; then
25
    libiberty_topdir="${srcdir}/../.."
26
    with_target_subdir=
27
  elif test -z "${with_target_subdir}"; then
28
    libiberty_topdir="${srcdir}/.."
29
  else
30
    if test "${with_target_subdir}" != "."; then
31
      libiberty_topdir="${srcdir}/${with_multisrctop}../.."
32
    else
33
      libiberty_topdir="${srcdir}/${with_multisrctop}.."
34
    fi
35
  fi
36
else
37
  libiberty_topdir="${srcdir}/.."
38
fi
39
AC_SUBST(libiberty_topdir)
40
AC_CONFIG_AUX_DIR($libiberty_topdir)
41
 
42
dnl Very limited version of automake's enable-maintainer-mode
43
 
44
AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
45
  dnl maintainer-mode is disabled by default
46
  AC_ARG_ENABLE(maintainer-mode,
47
[  --enable-maintainer-mode
48
                          enable make rules and dependencies not useful
49
                          (and sometimes confusing) to the casual installer],
50
      maintainer_mode=$enableval,
51
      maintainer_mode=no)
52
 
53
AC_MSG_RESULT($maintainer_mode)
54
 
55
if test "$maintainer_mode" = "yes"; then
56
  MAINT=''
57
  NOTMAINT='#'
58
else
59
  MAINT='#'
60
  NOTMAINT=''
61
fi
62
AC_SUBST(MAINT)dnl
63
AC_SUBST(NOTMAINT)dnl
64
 
65
# Do we have a single-tree copy of texinfo?  Even if we do, we can't
66
# rely on it - libiberty is built before texinfo.
67
AC_CHECK_PROG(MAKEINFO, makeinfo, makeinfo, )
68
if test "x$MAKEINFO" = "x"; then
69
    MAKEINFO="@echo makeinfo missing; true"
70
    BUILD_INFO=
71
else
72
    BUILD_INFO=info
73
    case "$MAKEINFO" in
74
      */missing\ makeinfo*)
75
        BUILD_INFO=
76
        AC_MSG_WARN([
77
*** Makeinfo is missing. Info documentation will not be built.])
78
        ;;
79
      *)
80
        case x"`$MAKEINFO --version | grep 'GNU texinfo'`" in
81
          x*\ [[1-3]].* )
82
            MAKEINFO="@echo $MAKEINFO is too old, 4.0 or newer required; true"
83
            BUILD_INFO=
84
            AC_MSG_WARN([
85
*** Makeinfo is too old. Info documentation will not be built.])
86
          ;;
87
        esac
88
        ;;
89
    esac
90
fi
91
AC_SUBST(MAKEINFO)
92
AC_SUBST(BUILD_INFO)
93
 
94
AC_CHECK_PROG(PERL, perl, perl, )
95
if test x"$PERL" = x""; then
96
  HAVE_PERL='#'
97
else
98
  HAVE_PERL=''
99
fi
100
AC_SUBST(HAVE_PERL)
101
 
102
AC_CANONICAL_HOST
103
 
104
dnl When we start using automake:
105
dnl AM_INIT_AUTOMAKE(libiberty, 1.0)
106
 
107
dnl These must be called before AM_PROG_LIBTOOL, because it may want
108
dnl to call AC_CHECK_PROG.
109
AC_CHECK_TOOL(AR, ar)
110
AC_CHECK_TOOL(RANLIB, ranlib, :)
111
 
112
GCC_NO_EXECUTABLES
113
AC_PROG_CC
114
AC_PROG_CPP_WERROR
115
 
116
# Warn C++ incompatibilities if supported.
117
AC_CACHE_CHECK(
118
  [whether ${CC} accepts -Wc++-compat],
119
  [ac_cv_prog_cc_w_cxx_compat],
120
  [save_CFLAGS="$CFLAGS"
121
  CFLAGS="-Wc++-compat"
122
  AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
123
                    [ac_cv_prog_cc_w_cxx_compat=yes],
124
                    [ac_cv_prog_cc_w_cxx_compat=no])
125
  CFLAGS="$save_CFLAGS"
126
  ])
127
 
128
 
129
if test x$GCC = xyes; then
130
  ac_libiberty_warn_cflags='-W -Wall -pedantic -Wwrite-strings -Wstrict-prototypes'
131
fi
132
if test $ac_cv_prog_cc_w_cxx_compat = yes ; then
133
  ac_libiberty_warn_cflags="${ac_libiberty_warn_cflags} -Wc++-compat"
134
fi
135
AC_SUBST(ac_libiberty_warn_cflags)
136
 
137
AC_PROG_CC_C_O
138
# autoconf is lame and doesn't give us any substitution variable for this.
139
if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
140
  NO_MINUS_C_MINUS_O=yes
141
else
142
  OUTPUT_OPTION='-o $@'
143
fi
144
AC_SUBST(NO_MINUS_C_MINUS_O)
145
AC_SUBST(OUTPUT_OPTION)
146
 
147
AC_C_CONST
148
AC_C_INLINE
149
AC_C_BIGENDIAN
150
 
151
dnl When we start using libtool:
152
dnl Default to a non shared library.  This may be overridden by the
153
dnl configure option --enable-shared.
154
dnl AM_DISABLE_SHARED
155
 
156
dnl When we start using libtool:
157
dnl AM_PROG_LIBTOOL
158
 
159
dnl When we start using automake:
160
dnl AM_CONFIG_HEADER(config.h:config.in)
161
AC_CONFIG_HEADER(config.h:config.in)
162
 
163
dnl When we start using automake:
164
dnl AM_MAINTAINER_MODE
165
dnl AC_EXEEXT
166
 
167
dnl When we start using automake:
168
dnl AM_PROG_INSTALL
169
AC_PROG_INSTALL
170
 
171
# Don't build the shared library for build.
172
if [[ -n "${with_build_subdir}" ]]; then
173
  enable_shared=no
174
fi
175
 
176
frag=
177
case "${host}" in
178
  rs6000-ibm-aix3.1 | rs6000-ibm-aix)
179
                        frag=mh-aix ;;
180
  *-*-cxux7*)           frag=mh-cxux7 ;;
181
  *-*-freebsd2.1.*)     frag=mh-fbsd21 ;;
182
  *-*-freebsd2.2.[[012]])       frag=mh-fbsd21 ;;
183
  i370-*-opened*)       frag=mh-openedition ;;
184
  i[[34567]]86-*-windows*)      frag=mh-windows ;;
185
esac
186
 
187
if [[ -n "${frag}" ]]; then
188
  frags=${libiberty_topdir}/libiberty/config/$frag
189
else
190
  frags=
191
fi
192
 
193
# If they didn't specify --enable-shared, don't generate shared libs.
194
case "${enable_shared}" in
195
  yes) shared=yes ;;
196
  no) shared=no ;;
197
  "") shared=no ;;
198
  *) shared=yes ;;
199
esac
200
if [[ "${shared}" = "yes" ]]; then
201
  frag=
202
  case "${host}" in
203
    *-*-cygwin*)        ;;
204
    alpha*-*-linux*)    frag=mh-elfalphapic ;;
205
    arm*-*-*)           frag=mh-armpic ;;
206
    hppa*-*-*)          frag=mh-papic ;;
207
    i[[34567]]86-*-* | x86_64-*-*)
208
                        frag=mh-x86pic ;;
209
    powerpc*-*-aix*)    ;;
210
    powerpc*-*-*)       frag=mh-ppcpic ;;
211
    sparc*-*-*)         frag=mh-sparcpic ;;
212
    s390*-*-*)          frag=mh-s390pic ;;
213
    *)                  frag=mh-${host_cpu}pic ;;
214
  esac
215
  if [[ -n "${frag}" ]]; then
216
    frags="${frags} ${libiberty_topdir}/config/${frag}"
217
  fi
218
fi
219
 
220
echo "# Warning: this fragment is automatically generated" > temp-frag
221
 
222
for frag in ${frags}; do
223
  if [[ -f ${frag} ]]; then
224
    echo "Appending ${frag} to xhost-mkfrag"
225
    echo "# Following fragment copied from ${frag}" >> temp-frag
226
    cat ${frag} >> temp-frag
227
  fi
228
done
229
 
230
# record if we want to build shared libs.
231
if [[ "${shared}" = "yes" ]]; then
232
  echo enable_shared = yes >> temp-frag
233
else
234
  echo enable_shared = no >> temp-frag
235
fi
236
 
237
frag=xhost-mkfrag
238
${CONFIG_SHELL-/bin/sh} ${libiberty_topdir}/move-if-change temp-frag xhost-mkfrag
239
 
240
host_makefile_frag=${frag}
241
AC_SUBST_FILE(host_makefile_frag)
242
 
243
# It's OK to check for header files.  Although the compiler may not be
244
# able to link anything, it had better be able to at least compile
245
# something.
246
AC_CHECK_HEADERS(sys/file.h sys/param.h limits.h stdlib.h malloc.h string.h unistd.h strings.h sys/time.h time.h sys/resource.h sys/stat.h sys/mman.h fcntl.h alloca.h sys/pstat.h sys/sysmp.h sys/sysinfo.h machine/hal_sysinfo.h sys/table.h sys/sysctl.h sys/systemcfg.h stdint.h stdio_ext.h)
247
AC_HEADER_SYS_WAIT
248
AC_HEADER_TIME
249
 
250
libiberty_AC_DECLARE_ERRNO
251
 
252
# Determine the size of an int for struct fibnode.
253
AC_CHECK_SIZEOF([int])
254
 
255
AC_CHECK_TYPE(uintptr_t, unsigned long)
256
 
257
# Look for a 64-bit type.
258
AC_MSG_CHECKING([for a 64-bit type])
259
AC_CACHE_VAL(liberty_cv_uint64,
260
[AC_TRY_COMPILE(
261
[#ifdef HAVE_STDINT_H
262
#include 
263
#endif],
264
[extern uint64_t foo;],
265
liberty_cv_uint64=uint64_t,
266
[AC_TRY_COMPILE(
267
[#ifdef HAVE_LIMITS_H
268
#include 
269
#endif
270
#ifndef CHAR_BIT
271
#define CHAR_BIT 8
272
#endif],
273
[extern char foo[sizeof(long) * CHAR_BIT >= 64 ? 1 : -1];],
274
liberty_cv_uint64="unsigned long",
275
[AC_TRY_COMPILE(
276
[#ifdef HAVE_LIMITS_H
277
#include 
278
#endif
279
#ifndef CHAR_BIT
280
#define CHAR_BIT 8
281
#endif],
282
[extern char foo[sizeof(long long) * CHAR_BIT >= 64 ? 1 : -1];],
283
liberty_cv_uint64="unsigned long long", liberty_cv_uint64=none)])])])
284
AC_MSG_RESULT($liberty_cv_uint64)
285
if test "$liberty_cv_uint64" != none; then
286
  AC_DEFINE_UNQUOTED(UNSIGNED_64BIT_TYPE, $liberty_cv_uint64,
287
                     [Define to an unsigned 64-bit type available in the compiler.])
288
fi
289
 
290
# Given the above check, we always have uintptr_t or a fallback
291
# definition.  So define HAVE_UINTPTR_T in case any imported code
292
# relies on it.
293
AC_DEFINE(HAVE_UINTPTR_T, 1, [Define if you have the \`uintptr_t' type.])
294
 
295
AC_TYPE_PID_T
296
 
297
# This is the list of functions which libiberty will provide if they
298
# are not available on the host.
299
 
300
funcs="asprintf"
301
funcs="$funcs atexit"
302
funcs="$funcs basename"
303
funcs="$funcs bcmp"
304
funcs="$funcs bcopy"
305
funcs="$funcs bsearch"
306
funcs="$funcs bzero"
307
funcs="$funcs calloc"
308
funcs="$funcs clock"
309
funcs="$funcs ffs"
310
funcs="$funcs getcwd"
311
funcs="$funcs getpagesize"
312
funcs="$funcs gettimeofday"
313
funcs="$funcs index"
314
funcs="$funcs insque"
315
funcs="$funcs memchr"
316
funcs="$funcs memcmp"
317
funcs="$funcs memcpy"
318
funcs="$funcs memmove"
319
funcs="$funcs mempcpy"
320
funcs="$funcs memset"
321
funcs="$funcs mkstemps"
322
funcs="$funcs putenv"
323
funcs="$funcs random"
324
funcs="$funcs rename"
325
funcs="$funcs rindex"
326
funcs="$funcs setenv"
327
funcs="$funcs snprintf"
328
funcs="$funcs sigsetmask"
329
funcs="$funcs stpcpy"
330
funcs="$funcs stpncpy"
331
funcs="$funcs strcasecmp"
332
funcs="$funcs strchr"
333
funcs="$funcs strdup"
334
funcs="$funcs strncasecmp"
335
funcs="$funcs strndup"
336
funcs="$funcs strrchr"
337
funcs="$funcs strstr"
338
funcs="$funcs strtod"
339
funcs="$funcs strtol"
340
funcs="$funcs strtoul"
341
funcs="$funcs strverscmp"
342
funcs="$funcs tmpnam"
343
funcs="$funcs vasprintf"
344
funcs="$funcs vfprintf"
345
funcs="$funcs vprintf"
346
funcs="$funcs vsnprintf"
347
funcs="$funcs vsprintf"
348
funcs="$funcs waitpid"
349
 
350
# Also in the old function.def file: alloca, vfork, getopt.
351
 
352
vars="sys_errlist sys_nerr sys_siglist"
353
 
354
checkfuncs="getrusage on_exit psignal strerror strsignal sysconf times sbrk gettimeofday"
355
checkfuncs="$checkfuncs realpath canonicalize_file_name pstat_getstatic pstat_getdynamic sysmp"
356
checkfuncs="$checkfuncs getsysinfo table sysctl wait3 wait4 __fsetlocking"
357
 
358
# These are neither executed nor required, but they help keep
359
# autoheader happy without adding a bunch of text to acconfig.h.
360
if test "x" = "y"; then
361
  AC_CHECK_FUNCS(asprintf atexit basename bcmp bcopy bsearch bzero calloc clock \
362
  getcwd getpagesize gettimeofday index insque mkstemps memchr memcmp memcpy \
363
  memmove mempcpy memset putenv random rename rindex sigsetmask \
364
  strcasecmp setenv stpcpy stpncpy strchr strdup strncasecmp strndup strrchr strstr \
365
  strtod strtol strtoul strverscmp tmpnam vasprintf vfprintf vprintf \
366
  vsprintf waitpid getrusage on_exit psignal strerror strsignal \
367
  sysconf times sbrk gettimeofday ffs snprintf vsnprintf \
368
  pstat_getstatic pstat_getdynamic sysmp getsysinfo table sysctl wait3 wait4 \
369
  realpath canonicalize_file_name __fsetlocking)
370
  AC_CHECK_DECLS([basename, ffs, asprintf, vasprintf, snprintf, vsnprintf])
371
  AC_DEFINE(HAVE_SYS_ERRLIST, 1, [Define if you have the sys_errlist variable.])
372
  AC_DEFINE(HAVE_SYS_NERR,    1, [Define if you have the sys_nerr variable.])
373
  AC_DEFINE(HAVE_SYS_SIGLIST, 1, [Define if you have the sys_siglist variable.])
374
fi
375
 
376
# For each of these functions, if the host does not provide the
377
# function we want to put FN.o in LIBOBJS, and if the host does
378
# provide the function, we want to define HAVE_FN in config.h.
379
 
380
setobjs=
381
CHECK=
382
target_header_dir=
383
if test -n "${with_target_subdir}"; then
384
 
385
  # We are being configured as a target library.  AC_REPLACE_FUNCS
386
  # may not work correctly, because the compiler may not be able to
387
  # link executables.  Note that we may still be being configured
388
  # native.
389
 
390
  # If we are being configured for newlib, we know which functions
391
  # newlib provide and which ones we will be expected to provide.
392
 
393
  if test "x${with_newlib}" = "xyes"; then
394
    AC_LIBOBJ([asprintf])
395
    AC_LIBOBJ([basename])
396
    AC_LIBOBJ([insque])
397
    AC_LIBOBJ([random])
398
    AC_LIBOBJ([strdup])
399
    AC_LIBOBJ([vasprintf])
400
 
401
    for f in $funcs; do
402
      case "$f" in
403
        asprintf | basename | insque | random | strdup | vasprintf)
404
          ;;
405
        *)
406
          n=HAVE_`echo $f | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
407
          AC_DEFINE_UNQUOTED($n)
408
          ;;
409
      esac
410
    done
411
 
412
    # newlib doesnt provide any of the variables in $vars, so we
413
    # dont have to check them here.
414
 
415
    # Of the functions in $checkfuncs, newlib only has strerror.
416
    AC_DEFINE(HAVE_STRERROR)
417
 
418
    setobjs=yes
419
 
420
  fi
421
 
422
  # If we are being configured for Mingw, we know which functions
423
  # Mingw provides and which ones we will be expected to provide.
424
 
425
  case "${host}" in
426
  *-*-mingw*)
427
    AC_LIBOBJ([asprintf])
428
    AC_LIBOBJ([basename])
429
    AC_LIBOBJ([bcmp])
430
    AC_LIBOBJ([bcopy])
431
    AC_LIBOBJ([bzero])
432
    AC_LIBOBJ([clock])
433
    AC_LIBOBJ([ffs])
434
    AC_LIBOBJ([getpagesize])
435
    AC_LIBOBJ([index])
436
    AC_LIBOBJ([insque])
437
    AC_LIBOBJ([mempcpy])
438
    AC_LIBOBJ([mkstemps])
439
    AC_LIBOBJ([random])
440
    AC_LIBOBJ([rindex])
441
    AC_LIBOBJ([sigsetmask])
442
    AC_LIBOBJ([stpcpy])
443
    AC_LIBOBJ([stpncpy])
444
    AC_LIBOBJ([strndup])
445
    AC_LIBOBJ([strverscmp])
446
    AC_LIBOBJ([vasprintf])
447
    AC_LIBOBJ([waitpid])
448
 
449
    for f in $funcs; do
450
      case "$f" in
451
        asprintf | basename | bcmp | bcopy | bzero | clock | ffs | getpagesize | index | insque | mempcpy | mkstemps | random | rindex | sigsetmask | stpcpy | stpncpy | strdup | strndup | strverscmp | vasprintf | waitpid)
452
          ;;
453
        *)
454
          n=HAVE_`echo $f | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
455
          AC_DEFINE_UNQUOTED($n)
456
          ;;
457
      esac
458
    done
459
 
460
    # Mingw doesnt provide any of the variables in $vars, so we
461
    # dont have to check them here.
462
 
463
    # Of the functions in $checkfuncs, Mingw only has strerror.
464
    AC_DEFINE(HAVE_STRERROR)
465
 
466
    setobjs=yes
467
    ;;
468
 
469
  esac
470
 
471
  # We may wish to install the target headers somewhere.
472
  AC_ARG_ENABLE(install-libiberty,
473
  [  --enable-install-libiberty       Install headers for end users],
474
  enable_install_libiberty=$enableval,
475
  enable_install_libiberty=no)dnl
476
 
477
  # Option parsed, now set things appropriately.
478
  case x"$enable_install_libiberty" in
479
    xyes|x)
480
      target_header_dir=libiberty
481
      ;;
482
    xno)
483
      target_header_dir=
484
      ;;
485
    *)
486
      # This could be sanity-checked in various ways...
487
      target_header_dir="${enable_install_libiberty}"
488
      ;;
489
  esac
490
 
491
 
492
else
493
 
494
   # Not a target library, so we set things up to run the test suite.
495
   CHECK=really-check
496
 
497
fi
498
 
499
AC_SUBST(CHECK)
500
AC_SUBST(target_header_dir)
501
 
502
case "${host}" in
503
  *-*-cygwin* | *-*-mingw*)
504
    AC_DEFINE(HAVE_SYS_ERRLIST)
505
    AC_DEFINE(HAVE_SYS_NERR)
506
    ;;
507
esac
508
 
509
if test -z "${setobjs}"; then
510
  case "${host}" in
511
 
512
  *-*-vxworks*)
513
    # Handle VxWorks configuration specially, since on VxWorks the
514
    # libraries are actually on the target board, not in the file
515
    # system.
516
    AC_LIBOBJ([basename])
517
    AC_LIBOBJ([getpagesize])
518
    AC_LIBOBJ([insque])
519
    AC_LIBOBJ([random])
520
    AC_LIBOBJ([strcasecmp])
521
    AC_LIBOBJ([strncasecmp])
522
    AC_LIBOBJ([strdup])
523
    AC_LIBOBJ([vfork])
524
    AC_LIBOBJ([waitpid])
525
    AC_LIBOBJ([vasprintf])
526
    for f in $funcs; do
527
      case "$f" in
528
        basename | getpagesize | insque | random | strcasecmp)
529
          ;;
530
        strncasecmp | strdup | vfork | waitpid | vasprintf)
531
          ;;
532
        *)
533
          n=HAVE_`echo $f | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
534
          AC_DEFINE_UNQUOTED($n)
535
          ;;
536
      esac
537
    done
538
 
539
    # VxWorks doesn't provide any of the variables in $vars, so we
540
    # don't have to check them here.
541
 
542
    # Of the functions in $checkfuncs, VxWorks only has strerror.
543
    AC_DEFINE(HAVE_STRERROR)
544
 
545
    setobjs=yes
546
    ;;
547
 
548
  esac
549
fi
550
 
551
if test -z "${setobjs}"; then
552
 
553
  case "${host}" in
554
 
555
  *-*-cygwin*)
556
    # The Cygwin library actually uses a couple of files from
557
    # libiberty when it is built.  If we are building a native
558
    # Cygwin, and we run the tests, we will appear to have these
559
    # files.  However, when we go on to build winsup, we will wind up
560
    # with a library which does not have the files, since they should
561
    # have come from libiberty.
562
 
563
    # We handle this by removing the functions the winsup library
564
    # provides from our shell variables, so that they appear to be
565
    # missing.
566
 
567
    # DJ - only if we're *building* cygwin, not just building *with* cygwin
568
 
569
    if test -n "${with_target_subdir}"
570
    then
571
      funcs="`echo $funcs | sed -e 's/random//'`"
572
      AC_LIBOBJ([random])
573
      vars="`echo $vars | sed -e 's/sys_siglist//'`"
574
      checkfuncs="`echo $checkfuncs | sed -e 's/strsignal//' -e 's/psignal//'`"
575
    fi
576
    ;;
577
 
578
  *-*-mingw32*)
579
    # Under mingw32, sys_nerr and sys_errlist exist, but they are
580
    # macros, so the test below won't find them.
581
    libiberty_cv_var_sys_nerr=yes
582
    libiberty_cv_var_sys_errlist=yes
583
    ;;
584
 
585
  *-*-msdosdjgpp*)
586
    # vfork and fork are stubs.
587
    ac_cv_func_vfork_works=no
588
    ;;
589
 
590
  *-*-uwin*)
591
    # Under some versions of uwin, vfork is notoriously buggy and the test
592
    # can hang configure; on other versions, vfork exists just as a stub.
593
    # FIXME: This should be removed once vfork in uwin's runtime is fixed.
594
    ac_cv_func_vfork_works=no
595
    # Under uwin 2.0+, sys_nerr and sys_errlist exist, but they are
596
    # macros (actually, these are imported from a DLL, but the end effect
597
    # is the same), so the test below won't find them.
598
    libiberty_cv_var_sys_nerr=yes
599
    libiberty_cv_var_sys_errlist=yes
600
    ;;
601
 
602
  *-*-*vms*)
603
    # Under VMS, vfork works very different than on Unix. The standard test
604
    # won't work, and it isn't easily adaptable. It makes more sense to
605
    # just force it.
606
    ac_cv_func_vfork_works=yes
607
    ;;
608
 
609
  esac
610
 
611
  # We haven't set the list of objects yet.  Use the standard autoconf
612
  # tests.  This will only work if the compiler works.
613
  AC_ISC_POSIX
614
  AC_REPLACE_FUNCS($funcs)
615
  libiberty_AC_FUNC_C_ALLOCA
616
  AC_FUNC_FORK
617
  if test $ac_cv_func_vfork_works = no; then
618
    AC_LIBOBJ([vfork])
619
  fi
620
  # We only need _doprnt if we might use it to implement v*printf.
621
  if test $ac_cv_func_vprintf != yes \
622
     || test $ac_cv_func_vfprintf != yes \
623
     || test $ac_cv_func_vsprintf != yes; then
624
    AC_REPLACE_FUNCS(_doprnt)
625
  else
626
    AC_CHECK_FUNCS(_doprnt)
627
  fi
628
 
629
  for v in $vars; do
630
    AC_MSG_CHECKING([for $v])
631
    AC_CACHE_VAL(libiberty_cv_var_$v,
632
      [AC_LINK_IFELSE([AC_LANG_PROGRAM([[int *p;]],[[extern int $v []; p = $v;]])],
633
                      [eval "libiberty_cv_var_$v=yes"],
634
                      [eval "libiberty_cv_var_$v=no"])])
635
    if eval "test \"`echo '$libiberty_cv_var_'$v`\" = yes"; then
636
      AC_MSG_RESULT(yes)
637
      n=HAVE_`echo $v | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
638
      AC_DEFINE_UNQUOTED($n)
639
    else
640
      AC_MSG_RESULT(no)
641
    fi
642
  done
643
 
644
  # special check for _system_configuration because AIX <4.3.2 do not
645
  # contain the `physmem' member.
646
  AC_MSG_CHECKING([for external symbol _system_configuration])
647
  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include ]],
648
                        [[double x = _system_configuration.physmem;]])],
649
    [AC_MSG_RESULT([yes])
650
    AC_DEFINE(HAVE__SYSTEM_CONFIGURATION, 1,
651
              [Define if you have the _system_configuration variable.])],
652
    [AC_MSG_RESULT([no])])
653
 
654
  AC_CHECK_FUNCS($checkfuncs)
655
  AC_CHECK_DECLS([basename, ffs, asprintf, vasprintf, snprintf, vsnprintf])
656
  AC_CHECK_DECLS([calloc, getenv, getopt, malloc, realloc, sbrk])
657
  AC_CHECK_DECLS([strverscmp])
658
  libiberty_NEED_DECLARATION(canonicalize_file_name)
659
fi
660
 
661
# Figure out which version of pexecute to use.
662
case "${host}" in
663
     *-*-mingw* | *-*-winnt*)   pexecute=./pex-win32.o  ;;
664
     *-*-msdosdjgpp*)           pexecute=./pex-djgpp.o  ;;
665
     *-*-msdos*)                pexecute=./pex-msdos.o  ;;
666
     *)                         pexecute=./pex-unix.o   ;;
667
esac
668
AC_SUBST(pexecute)
669
 
670
libiberty_AC_FUNC_STRNCMP
671
 
672
# Install a library built with a cross compiler in $(tooldir) rather
673
# than $(libdir).
674
if test -z "${with_cross_host}"; then
675
  INSTALL_DEST=libdir
676
else
677
  INSTALL_DEST=tooldir
678
fi
679
AC_SUBST(INSTALL_DEST)
680
 
681
m4_pattern_allow(LIBOBJS)
682
L=""
683
for l in x $LIBOBJS; do
684
  case $l in
685
    x) ;;
686
    *) L="$L ./$l" ;;
687
  esac
688
done
689
LIBOBJS="$L"
690
 
691
dnl Required by html and install-html
692
AC_SUBST(datarootdir)
693
AC_SUBST(docdir)
694
AC_SUBST(htmldir)
695
 
696
# We need multilib support, but only if configuring for the target.
697
AC_CONFIG_FILES([Makefile testsuite/Makefile])
698
AC_CONFIG_COMMANDS([default],
699
  [[test -z "$CONFIG_HEADERS" || echo timestamp > stamp-h
700
if test -n "$CONFIG_FILES"; then
701
  if test -n "${with_target_subdir}"; then
702
    # FIXME: We shouldn't need to set ac_file
703
    ac_file=Makefile
704
    LD="${ORIGINAL_LD_FOR_MULTILIBS}"
705
    . ${libiberty_topdir}/config-ml.in
706
  fi
707
fi]],
708
[[srcdir=${srcdir}
709
host=${host}
710
target=${target}
711
with_target_subdir=${with_target_subdir}
712
with_multisubdir=${with_multisubdir}
713
ac_configure_args="--enable-multilib ${ac_configure_args}"
714
CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
715
ORIGINAL_LD_FOR_MULTILIBS="${ORIGINAL_LD_FOR_MULTILIBS}"
716
libiberty_topdir=${libiberty_topdir}
717
]])
718
AC_OUTPUT

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