1dnl Process this file with autoconf to produce a configure script
2
3AC_INIT
4AC_CONFIG_SRCDIR([xmalloc.c])
5
6# This works around the fact that libtool configuration may change LD
7# for this particular configuration, but some shells, instead of
8# keeping the changes in LD private, export them just because LD is
9# exported.  We don't use libtool yet, but some day we might, so...
10ORIGINAL_LD_FOR_MULTILIBS=$LD
11
12dnl We use these options to decide which functions to include.
13AC_ARG_WITH(target-subdir,
14[  --with-target-subdir=SUBDIR      Configuring in a subdirectory for target])
15AC_ARG_WITH(build-subdir,
16[  --with-build-subdir=SUBDIR       Configuring in a subdirectory for build])
17AC_ARG_WITH(cross-host,
18[  --with-cross-host=HOST           Configuring with a cross compiler])
19AC_ARG_WITH(newlib,
20[  --with-newlib                    Configuring with newlib])
21
22if test "${srcdir}" = "."; then
23  if test -n "${with_build_subdir}"; then
24    libiberty_topdir="${srcdir}/../.."
25    with_target_subdir=
26  elif test -z "${with_target_subdir}"; then
27    libiberty_topdir="${srcdir}/.."
28  else
29    if test "${with_target_subdir}" != "."; then
30      libiberty_topdir="${srcdir}/${with_multisrctop}../.."
31    else
32      libiberty_topdir="${srcdir}/${with_multisrctop}.."
33    fi
34  fi
35else
36  libiberty_topdir="${srcdir}/.."
37fi
38AC_SUBST(libiberty_topdir)
39AC_CONFIG_AUX_DIR($libiberty_topdir)
40
41dnl Very limited version of automake's enable-maintainer-mode
42
43AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
44  dnl maintainer-mode is disabled by default
45  AC_ARG_ENABLE(maintainer-mode,
46[  --enable-maintainer-mode
47                          enable make rules and dependencies not useful
48                          (and sometimes confusing) to the casual installer],
49      maintainer_mode=$enableval,
50      maintainer_mode=no)
51
52AC_MSG_RESULT($maintainer_mode)
53
54if test "$maintainer_mode" = "yes"; then
55  MAINT=''
56  NOTMAINT='#'
57else
58  MAINT='#'
59  NOTMAINT=''
60fi
61AC_SUBST(MAINT)dnl
62AC_SUBST(NOTMAINT)dnl
63
64if test -z "$ETAGS"; then
65  ETAGS=etags
66fi
67AC_SUBST([ETAGS])
68
69# Do we have a single-tree copy of texinfo?  Even if we do, we can't
70# rely on it - libiberty is built before texinfo.
71AC_CHECK_PROG(MAKEINFO, makeinfo, makeinfo, )
72if test "x$MAKEINFO" = "x"; then
73    MAKEINFO="@echo makeinfo missing; true"
74    BUILD_INFO=
75else
76    BUILD_INFO=info
77    case "$MAKEINFO" in
78      */missing\ makeinfo*)
79	BUILD_INFO=
80	AC_MSG_WARN([
81*** Makeinfo is missing. Info documentation will not be built.])
82        ;;
83      *)
84	case x"`$MAKEINFO --version | grep 'GNU texinfo'`" in
85	  x*\ [[1-3]].* )
86	    MAKEINFO="@echo $MAKEINFO is too old, 4.0 or newer required; true"
87	    BUILD_INFO=
88	    AC_MSG_WARN([
89*** Makeinfo is too old. Info documentation will not be built.])
90	  ;;
91	esac
92	;;
93    esac
94fi
95AC_SUBST(MAKEINFO)
96AC_SUBST(BUILD_INFO)
97
98AC_CHECK_PROG(PERL, perl, perl, )
99if test x"$PERL" = x""; then
100  HAVE_PERL='#'
101else
102  HAVE_PERL=''
103fi
104AC_SUBST(HAVE_PERL)
105
106AC_CANONICAL_HOST
107
108dnl When we start using automake:
109dnl AM_INIT_AUTOMAKE(libiberty, 1.0)
110
111dnl These must be called before AM_PROG_LIBTOOL, because it may want
112dnl to call AC_CHECK_PROG.
113AC_CHECK_TOOL(AR, ar)
114AC_CHECK_TOOL(RANLIB, ranlib, :)
115
116dnl When switching to automake, replace the following with AM_ENABLE_MULTILIB.
117# Add --enable-multilib to configure.
118# Default to --enable-multilib
119AC_ARG_ENABLE(multilib,
120[  --enable-multilib       build many library versions (default)],
121[case "$enableval" in
122  yes) multilib=yes ;;
123  no)  multilib=no ;;
124  *)   AC_MSG_ERROR([bad value $enableval for multilib option]) ;;
125 esac],
126	      [multilib=yes])
127
128# Even if the default multilib is not a cross compilation,
129# it may be that some of the other multilibs are.
130if test $cross_compiling = no && test $multilib = yes \
131   && test "x${with_multisubdir}" != x ; then
132   cross_compiling=maybe
133fi
134
135# We may wish to install the target headers somewhere.
136AC_MSG_CHECKING([whether to install libiberty headers and static library])
137dnl install-libiberty is disabled by default
138
139AC_ARG_ENABLE(install-libiberty,
140[  --enable-install-libiberty       Install headers and library for end users],
141enable_install_libiberty=$enableval,
142enable_install_libiberty=no)dnl
143
144# Option parsed, now set things appropriately.
145case x"$enable_install_libiberty" in
146  xyes|x)
147    target_header_dir=libiberty
148    ;;
149  xno)   
150    target_header_dir=
151    ;;
152  *) 
153    # This could be sanity-checked in various ways...
154    target_header_dir="${enable_install_libiberty}"
155    ;;
156esac
157AC_MSG_RESULT($enable_install_libiberty)
158AC_MSG_NOTICE([target_header_dir = $target_header_dir])
159
160GCC_NO_EXECUTABLES
161AC_PROG_CC
162AC_GNU_SOURCE
163AC_SYS_LARGEFILE
164AC_PROG_CPP_WERROR
165
166ACX_PROG_CC_WARNING_OPTS([-W -Wall -Wwrite-strings -Wc++-compat \
167			  -Wstrict-prototypes \
168			  -Wshadow=local], [ac_libiberty_warn_cflags])
169ACX_PROG_CC_WARNING_ALMOST_PEDANTIC([], [ac_libiberty_warn_cflags])
170
171AC_PROG_CC_C_O
172# autoconf is lame and doesn't give us any substitution variable for this.
173if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
174  NO_MINUS_C_MINUS_O=yes
175else
176  OUTPUT_OPTION='-o $@'
177fi
178AC_SUBST(NO_MINUS_C_MINUS_O)
179AC_SUBST(OUTPUT_OPTION)
180
181AC_C_CONST
182AC_C_INLINE
183AC_C_BIGENDIAN
184
185dnl When we start using libtool:
186dnl Default to a non shared library.  This may be overridden by the
187dnl configure option --enable-shared.
188dnl AM_DISABLE_SHARED
189
190dnl When we start using libtool:
191dnl AM_PROG_LIBTOOL
192
193dnl When we start using automake:
194dnl AM_CONFIG_HEADER(config.h:config.in)
195AC_CONFIG_HEADER(config.h:config.in)
196
197dnl When we start using automake:
198dnl AM_MAINTAINER_MODE
199dnl AC_EXEEXT
200
201dnl When we start using automake:
202dnl AM_PROG_INSTALL
203AC_PROG_INSTALL
204
205# Don't build the shared library for build.
206if [[ -n "${with_build_subdir}" ]]; then
207  enable_shared=no
208fi
209
210frag=
211case "${host}" in
212  rs6000-ibm-aix3.1 | rs6000-ibm-aix)
213                        frag=mh-aix ;;
214  *-*-cxux7*)		frag=mh-cxux7 ;;
215  *-*-freebsd2.1.*)	frag=mh-fbsd21 ;;
216  *-*-freebsd2.2.[[012]])	frag=mh-fbsd21 ;;
217  i370-*-opened*)       frag=mh-openedition ;;
218  i[[34567]]86-*-windows*)	frag=mh-windows ;;
219esac
220
221if [[ -n "${frag}" ]]; then
222  frag=${libiberty_topdir}/libiberty/config/$frag
223fi
224
225GCC_PICFLAG
226
227# If they didn't specify --enable-shared, don't generate shared libs.
228case "${enable_shared}" in
229  yes) shared=yes ;;
230  no) shared=no ;;
231  "") shared=no ;;
232  *) shared=yes ;;
233esac
234
235# ...unless --enable-host-shared was passed from top-level config:
236if [[ "${enable_host_shared}" = "yes" ]]; then
237  shared=yes
238fi
239
240if [[ "${shared}" != "yes" ]]; then
241  PICFLAG=
242fi
243AC_SUBST(PICFLAG)
244
245NOASANFLAG=
246case " ${CFLAGS} " in
247  *\ -fsanitize=address\ *) NOASANFLAG=-fno-sanitize=address ;;
248  *\ -fsanitize=hwaddress\ *) NOASANFLAG=-fno-sanitize=hwaddress ;;
249esac
250AC_SUBST(NOASANFLAG)
251
252GCC_CET_HOST_FLAGS(CET_HOST_FLAGS)
253AC_SUBST(CET_HOST_FLAGS)
254
255echo "# Warning: this fragment is automatically generated" > temp-frag
256
257if [[ -n "${frag}" ]] && [[ -f "${frag}" ]]; then
258  echo "Appending ${frag} to xhost-mkfrag"
259  echo "# Following fragment copied from ${frag}" >> temp-frag
260  cat ${frag} >> temp-frag
261fi
262
263# record if we want to build shared libs.
264if [[ "${shared}" = "yes" ]]; then
265  echo enable_shared = yes >> temp-frag
266else
267  echo enable_shared = no >> temp-frag
268fi
269
270frag=xhost-mkfrag
271${CONFIG_SHELL-/bin/sh} ${libiberty_topdir}/move-if-change temp-frag xhost-mkfrag
272
273host_makefile_frag=${frag}
274AC_SUBST_FILE(host_makefile_frag)
275
276# It's OK to check for header files.  Although the compiler may not be
277# able to link anything, it had better be able to at least compile
278# something.
279AC_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 process.h sys/prctl.h)
280AC_HEADER_SYS_WAIT
281AC_HEADER_TIME
282
283libiberty_AC_DECLARE_ERRNO
284
285# Determine sizes of some types.
286AC_CHECK_SIZEOF([int])
287AC_CHECK_SIZEOF([long])
288AC_CHECK_SIZEOF([size_t])
289
290# Check for presense of long long
291AC_CHECK_TYPE([long long],
292  [AC_DEFINE(HAVE_LONG_LONG, 1, [Define if you have the `long long' type.]) AC_CHECK_SIZEOF([long long])],
293  [])
294
295# Look for a 64-bit type.
296AC_MSG_CHECKING([for a 64-bit type])
297AC_CACHE_VAL(liberty_cv_uint64,
298[AC_TRY_COMPILE(
299[#ifdef HAVE_STDINT_H
300#include <stdint.h>
301#endif],
302[extern uint64_t foo;],
303liberty_cv_uint64=uint64_t,
304[AC_TRY_COMPILE(
305[#ifdef HAVE_LIMITS_H
306#include <limits.h>
307#endif
308#ifndef CHAR_BIT
309#define CHAR_BIT 8
310#endif],
311[extern char foo[sizeof(long) * CHAR_BIT >= 64 ? 1 : -1];],
312liberty_cv_uint64="unsigned long",
313[AC_TRY_COMPILE(
314[#ifdef HAVE_LIMITS_H
315#include <limits.h>
316#endif
317#ifndef CHAR_BIT
318#define CHAR_BIT 8
319#endif],
320[extern char foo[sizeof(long long) * CHAR_BIT >= 64 ? 1 : -1];],
321liberty_cv_uint64="unsigned long long", liberty_cv_uint64=none)])])])
322AC_MSG_RESULT($liberty_cv_uint64)
323if test "$liberty_cv_uint64" != none; then
324  AC_DEFINE_UNQUOTED(UNSIGNED_64BIT_TYPE, $liberty_cv_uint64,
325                     [Define to an unsigned 64-bit type available in the compiler.])
326fi
327
328AC_TYPE_INTPTR_T
329AC_TYPE_UINTPTR_T
330AC_TYPE_SSIZE_T
331
332# Given the above check, we always have uintptr_t or a fallback
333# definition.  So define HAVE_UINTPTR_T in case any imported code
334# relies on it.
335AC_DEFINE(HAVE_UINTPTR_T, 1, [Define if you have the \`uintptr_t' type.])
336
337AC_TYPE_PID_T
338
339# This is the list of functions which libiberty will provide if they
340# are not available on the host.
341
342funcs="asprintf"
343funcs="$funcs atexit"
344funcs="$funcs basename"
345funcs="$funcs bcmp"
346funcs="$funcs bcopy"
347funcs="$funcs bsearch"
348funcs="$funcs bzero"
349funcs="$funcs calloc"
350funcs="$funcs clock"
351funcs="$funcs ffs"
352funcs="$funcs getcwd"
353funcs="$funcs getpagesize"
354funcs="$funcs gettimeofday"
355funcs="$funcs index"
356funcs="$funcs insque"
357funcs="$funcs memchr"
358funcs="$funcs memcmp"
359funcs="$funcs memcpy"
360funcs="$funcs memmem"
361funcs="$funcs memmove"
362funcs="$funcs mempcpy"
363funcs="$funcs memset"
364funcs="$funcs mkstemps"
365funcs="$funcs putenv"
366funcs="$funcs random"
367funcs="$funcs rename"
368funcs="$funcs rindex"
369funcs="$funcs setenv"
370funcs="$funcs snprintf"
371funcs="$funcs sigsetmask"
372funcs="$funcs stpcpy"
373funcs="$funcs stpncpy"
374funcs="$funcs strcasecmp"
375funcs="$funcs strchr"
376funcs="$funcs strdup"
377funcs="$funcs strncasecmp"
378funcs="$funcs strndup"
379funcs="$funcs strnlen"
380funcs="$funcs strrchr"
381funcs="$funcs strstr"
382funcs="$funcs strtod"
383funcs="$funcs strtol"
384funcs="$funcs strtoul"
385funcs="$funcs strtoll"
386funcs="$funcs strtoull"
387funcs="$funcs strverscmp"
388funcs="$funcs tmpnam"
389funcs="$funcs vasprintf"
390funcs="$funcs vfprintf"
391funcs="$funcs vprintf"
392funcs="$funcs vsnprintf"
393funcs="$funcs vsprintf"
394funcs="$funcs waitpid"
395funcs="$funcs setproctitle"
396
397# Also in the old function.def file: alloca, vfork, getopt.
398
399vars="sys_errlist sys_nerr sys_siglist"
400
401checkfuncs="__fsetlocking canonicalize_file_name dup3 getrlimit getrusage \
402 getsysinfo gettimeofday on_exit pipe2 psignal pstat_getdynamic pstat_getstatic \
403 realpath setrlimit spawnve spawnvpe strerror strsignal sysconf sysctl \
404 sysmp table times wait3 wait4"
405
406#��Darwin has sbrk, but it is deprecated and that produces build-time warnings
407#��so do not check for it.
408case "${host}" in
409  *-*-darwin*) ;;
410  *) checkfuncs="$checkfuncs sbrk"
411esac
412
413# These are neither executed nor required, but they help keep
414# autoheader happy without adding a bunch of text to acconfig.h.
415if test "x" = "y"; then
416  AC_CHECK_FUNCS(asprintf atexit \
417    basename bcmp bcopy bsearch bzero \
418    calloc canonicalize_file_name clock \
419    dup3 \
420    ffs __fsetlocking \
421    getcwd getpagesize getrlimit getrusage getsysinfo gettimeofday \
422    index insque \
423    memchr memcmp memcpy memmem memmove memset mkstemps \
424    on_exit \
425    pipe2 psignal pstat_getdynamic pstat_getstatic putenv \
426    random realpath rename rindex \
427    sbrk setenv setproctitle setrlimit sigsetmask snprintf spawnve spawnvpe \
428     stpcpy stpncpy strcasecmp strchr strdup \
429     strerror strncasecmp strndup strnlen strrchr strsignal strstr strtod \
430     strtol strtoul strtoll strtoull strverscmp sysconf sysctl sysmp \
431    table times tmpnam \
432    vasprintf vfprintf vprintf vsprintf \
433    wait3 wait4 waitpid)
434  AC_CHECK_DECLS([basename(char *), ffs, asprintf, vasprintf, snprintf, vsnprintf, strtol, strtoul, strtoll, strtoull, strnlen])
435  AC_DEFINE(HAVE_SYS_ERRLIST, 1, [Define if you have the sys_errlist variable.])
436  AC_DEFINE(HAVE_SYS_NERR,    1, [Define if you have the sys_nerr variable.])
437  AC_DEFINE(HAVE_SYS_SIGLIST, 1, [Define if you have the sys_siglist variable.])
438fi
439
440# For each of these functions, if the host does not provide the
441# function we want to put FN.o in LIBOBJS, and if the host does
442# provide the function, we want to define HAVE_FN in config.h.
443
444setobjs=
445CHECK=
446if test -n "${with_target_subdir}"; then
447
448  # We are being configured as a target library.  AC_REPLACE_FUNCS
449  # may not work correctly, because the compiler may not be able to
450  # link executables.  Note that we may still be being configured
451  # native.
452
453  # If we are being configured for newlib, we know which functions
454  # newlib provide and which ones we will be expected to provide.
455
456  if test "x${with_newlib}" = "xyes"; then
457    AC_LIBOBJ([asprintf])
458    AC_LIBOBJ([basename])
459    AC_LIBOBJ([insque])
460    AC_LIBOBJ([random])
461    AC_LIBOBJ([strdup])
462    AC_LIBOBJ([vasprintf])
463
464    for f in $funcs; do
465      case "$f" in
466	asprintf | basename | insque | random | strdup | vasprintf)
467	  ;;
468	*)
469	  n=HAVE_`echo $f | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
470	  AC_DEFINE_UNQUOTED($n)
471	  ;;
472      esac
473    done
474
475    # newlib doesnt provide any of the variables in $vars, so we
476    # dont have to check them here.
477
478    # Of the functions in $checkfuncs, newlib only has strerror.
479    AC_DEFINE(HAVE_STRERROR)
480
481    setobjs=yes
482
483  fi
484
485  # If we are being configured for Mingw, we know which functions
486  # Mingw provides and which ones we will be expected to provide.
487
488  case "${host}" in
489  *-*-mingw*)
490    AC_LIBOBJ([asprintf])
491    AC_LIBOBJ([basename])
492    AC_LIBOBJ([bcmp])
493    AC_LIBOBJ([bcopy])
494    AC_LIBOBJ([bzero])
495    AC_LIBOBJ([clock])
496    AC_LIBOBJ([ffs])
497    AC_LIBOBJ([getpagesize])
498    AC_LIBOBJ([index])
499    AC_LIBOBJ([insque])
500    AC_LIBOBJ([mempcpy])
501    AC_LIBOBJ([mkstemps])
502    AC_LIBOBJ([random])
503    AC_LIBOBJ([rindex])
504    AC_LIBOBJ([sigsetmask])
505    AC_LIBOBJ([stpcpy])
506    AC_LIBOBJ([stpncpy])
507    AC_LIBOBJ([strndup])
508    AC_LIBOBJ([strnlen])
509    AC_LIBOBJ([strverscmp])
510    AC_LIBOBJ([vasprintf])
511    AC_LIBOBJ([waitpid])
512
513    for f in $funcs; do
514      case "$f" in
515	asprintf | basename | bcmp | bcopy | bzero | clock | ffs | getpagesize | index | insque | mempcpy | mkstemps | random | rindex | sigsetmask | stpcpy | stpncpy | strdup | strndup | strnlen | strverscmp | vasprintf | waitpid)
516	  ;;
517	*)
518	  n=HAVE_`echo $f | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
519	  AC_DEFINE_UNQUOTED($n)
520	  ;;
521      esac
522    done
523
524    # Mingw doesnt provide any of the variables in $vars, so we
525    # dont have to check them here.
526
527    # Of the functions in $checkfuncs, Mingw only has strerror.
528    AC_DEFINE(HAVE_STRERROR)
529
530    setobjs=yes
531    ;;
532
533  *-*-msdosdjgpp)
534    AC_LIBOBJ([vasprintf])
535    AC_LIBOBJ([vsnprintf])
536    AC_LIBOBJ([snprintf])
537    AC_LIBOBJ([asprintf])
538
539    for f in atexit basename bcmp bcopy bsearch bzero calloc clock ffs \
540             getcwd getpagesize getrusage gettimeofday \
541             index insque memchr memcmp memcpy memmove memset psignal \
542             putenv random rename rindex sbrk setenv stpcpy strcasecmp \
543             strchr strdup strerror strncasecmp strrchr strstr strtod \
544             strtol strtoul sysconf times tmpnam vfprintf vprintf \
545             vsprintf waitpid
546    do
547      n=HAVE_`echo $f | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
548      AC_DEFINE_UNQUOTED($n)
549    done
550
551
552    setobjs=yes
553    ;;
554
555  esac
556
557else
558
559   # Not a target library, so we set things up to run the test suite.
560   CHECK=really-check
561
562fi
563
564AC_SUBST(CHECK)
565AC_SUBST(target_header_dir)
566
567case "${host}" in
568  *-*-cygwin* | *-*-mingw*)
569    AC_DEFINE(HAVE_SYS_ERRLIST)
570    AC_DEFINE(HAVE_SYS_NERR)
571    ;;
572esac
573
574if test -z "${setobjs}"; then
575  case "${host}" in
576
577  *-*-vxworks*)
578    # Handle VxWorks configuration specially, since on VxWorks the
579    # libraries are actually on the target board, not in the file
580    # system.
581    AC_LIBOBJ([basename])
582    AC_LIBOBJ([getpagesize])
583    AC_LIBOBJ([insque])
584    AC_LIBOBJ([random])
585    AC_LIBOBJ([strcasecmp])
586    AC_LIBOBJ([strncasecmp])
587    AC_LIBOBJ([strdup])
588    AC_LIBOBJ([vfork])
589    AC_LIBOBJ([waitpid])
590    AC_LIBOBJ([vasprintf])
591    for f in $funcs; do
592      case "$f" in
593	basename | getpagesize | insque | random | strcasecmp)
594	  ;;
595	strncasecmp | strdup | vfork | waitpid | vasprintf)
596	  ;;
597	*)
598	  n=HAVE_`echo $f | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
599	  AC_DEFINE_UNQUOTED($n)
600	  ;;
601      esac
602    done
603
604    # VxWorks doesn't provide any of the variables in $vars, so we
605    # don't have to check them here.
606
607    # Of the functions in $checkfuncs, VxWorks only has strerror.
608    AC_DEFINE(HAVE_STRERROR)
609
610    setobjs=yes
611    ;;
612
613  esac
614fi
615
616if test -z "${setobjs}"; then
617
618  case "${host}" in
619
620  *-*-android*)
621    # On android, getpagesize is defined in unistd.h as a static inline
622    # function, which AC_CHECK_FUNCS does not handle properly.
623    ac_cv_func_getpagesize=yes
624    ;;
625
626  hppa*-*-hpux*)
627    # Replace system snprintf and vsnprintf with libiberty implementations.
628    AC_LIBOBJ([snprintf])
629    AC_LIBOBJ([vsnprintf])
630    ;;
631
632  *-*-mingw32*)
633    # Under mingw32, sys_nerr and sys_errlist exist, but they are
634    # macros, so the test below won't find them.
635    libiberty_cv_var_sys_nerr=yes
636    libiberty_cv_var_sys_errlist=yes
637    ;;
638
639  *-*-msdosdjgpp*)
640    # vfork and fork are stubs.
641    ac_cv_func_vfork_works=no
642    ;;
643
644  *-*-uwin*)
645    # Under some versions of uwin, vfork is notoriously buggy and the test 
646    # can hang configure; on other versions, vfork exists just as a stub.
647    # FIXME: This should be removed once vfork in uwin's runtime is fixed.
648    ac_cv_func_vfork_works=no
649    # Under uwin 2.0+, sys_nerr and sys_errlist exist, but they are
650    # macros (actually, these are imported from a DLL, but the end effect 
651    # is the same), so the test below won't find them.
652    libiberty_cv_var_sys_nerr=yes
653    libiberty_cv_var_sys_errlist=yes
654    ;;
655
656  *-*-*vms*)
657    # Under VMS, vfork works very different than on Unix. The standard test 
658    # won't work, and it isn't easily adaptable. It makes more sense to
659    # just force it.
660    ac_cv_func_vfork_works=yes
661    ;;
662
663  esac
664
665  # We haven't set the list of objects yet.  Use the standard autoconf
666  # tests.  This will only work if the compiler works.
667  AC_ISC_POSIX
668  AC_REPLACE_FUNCS($funcs)
669  libiberty_AC_FUNC_C_ALLOCA
670  AC_FUNC_FORK
671  if test $ac_cv_func_vfork_works = no; then
672    AC_LIBOBJ([vfork])
673  fi
674  # We only need _doprnt if we might use it to implement v*printf.
675  if test $ac_cv_func_vprintf != yes \
676     || test $ac_cv_func_vfprintf != yes \
677     || test $ac_cv_func_vsprintf != yes; then
678    AC_REPLACE_FUNCS(_doprnt)
679  else
680    AC_CHECK_FUNCS(_doprnt)
681  fi
682
683  for v in $vars; do
684    AC_MSG_CHECKING([for $v])
685    AC_CACHE_VAL(libiberty_cv_var_$v,
686      [AC_LINK_IFELSE([AC_LANG_PROGRAM([[extern int $v [];]],[[if ($v [0]) return 1;]])],
687		      [eval "libiberty_cv_var_$v=yes"],
688		      [eval "libiberty_cv_var_$v=no"])])
689    if eval "test \"`echo '$libiberty_cv_var_'$v`\" = yes"; then
690      AC_MSG_RESULT(yes)
691      n=HAVE_`echo $v | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
692      AC_DEFINE_UNQUOTED($n)
693    else
694      AC_MSG_RESULT(no)
695    fi
696  done
697
698  # special check for _system_configuration because AIX <4.3.2 do not
699  # contain the `physmem' member.
700  AC_MSG_CHECKING([for external symbol _system_configuration])
701  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/systemcfg.h>]],
702			[[double x = _system_configuration.physmem;]])],
703    [AC_MSG_RESULT([yes])
704    AC_DEFINE(HAVE__SYSTEM_CONFIGURATION, 1,
705	      [Define if you have the _system_configuration variable.])],
706    [AC_MSG_RESULT([no])])
707
708  AC_CHECK_FUNCS($checkfuncs)
709  AC_CHECK_DECLS([basename(char *), ffs, asprintf, vasprintf, snprintf, vsnprintf])
710  AC_CHECK_DECLS([calloc, getenv, getopt, malloc, realloc])
711  case "${host}" in
712      *-*-darwin*) ;; # Darwin's sbrk implementation is deprecated.
713      *) AC_CHECK_DECLS([sbrk]);;
714  esac
715  AC_CHECK_DECLS([strtol, strtoul, strtoll, strtoull])
716  AC_CHECK_DECLS([strverscmp])
717  AC_CHECK_DECLS([strnlen])
718  libiberty_NEED_DECLARATION(canonicalize_file_name)
719fi
720
721# Figure out which version of pexecute to use.
722case "${host}" in
723     *-*-mingw* | *-*-winnt*)	pexecute=pex-win32  ;;
724     *-*-msdosdjgpp*)		pexecute=pex-djgpp  ;;
725     *-*-msdos*)		pexecute=pex-msdos  ;;
726     *)				pexecute=pex-unix   ;;
727esac
728AC_SUBST(pexecute)
729
730libiberty_AC_FUNC_STRNCMP
731
732# Install a library built with a cross compiler in $(tooldir) rather
733# than $(libdir).
734if test -z "${with_cross_host}"; then
735  INSTALL_DEST=libdir
736else
737  INSTALL_DEST=tooldir
738fi
739AC_SUBST(INSTALL_DEST)
740
741m4_pattern_allow(LIBOBJS)
742L=""
743for l in x $LIBOBJS; do
744  case $l in
745    x) ;;
746    *) L="$L ./$l" ;;
747  esac
748done
749LIBOBJS="$L"
750
751dnl Required by html and install-html
752AC_SUBST(datarootdir)
753AC_SUBST(docdir)
754AC_SUBST(htmldir)
755
756# We need multilib support, but only if configuring for the target.
757AC_CONFIG_FILES([Makefile])
758AC_CONFIG_COMMANDS([default],
759  [[test -z "$CONFIG_HEADERS" || echo timestamp > stamp-h
760if test -n "$CONFIG_FILES"; then
761  if test -n "${with_target_subdir}"; then
762    # FIXME: We shouldn't need to set ac_file
763    ac_file=Makefile
764    LD="${ORIGINAL_LD_FOR_MULTILIBS}"
765    . ${libiberty_topdir}/config-ml.in
766  fi
767fi]],
768[[srcdir=${srcdir}
769host=${host}
770target=${target}
771with_target_subdir=${with_target_subdir}
772with_multisubdir=${with_multisubdir}
773ac_configure_args="--enable-multilib ${ac_configure_args}"
774CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
775ORIGINAL_LD_FOR_MULTILIBS="${ORIGINAL_LD_FOR_MULTILIBS}"
776libiberty_topdir=${libiberty_topdir}
777]])
778AC_OUTPUT
779