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