1dnl Process this file with autoconf to produce a configure script
2
3AC_INIT
4AC_CONFIG_SRCDIR([xmalloc.c])
5AC_CONFIG_MACRO_DIRS([../config])
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...
11ORIGINAL_LD_FOR_MULTILIBS=$LD
12
13dnl We use these options to decide which functions to include.
14AC_ARG_WITH(target-subdir,
15[  --with-target-subdir=SUBDIR      Configuring in a subdirectory for target])
16AC_ARG_WITH(build-subdir,
17[  --with-build-subdir=SUBDIR       Configuring in a subdirectory for build])
18AC_ARG_WITH(cross-host,
19[  --with-cross-host=HOST           Configuring with a cross compiler])
20AC_ARG_WITH(newlib,
21[  --with-newlib                    Configuring with newlib])
22
23if test "${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}/${with_multisrctop}.."
34    fi
35  fi
36else
37  libiberty_topdir="${srcdir}/.."
38fi
39AC_SUBST(libiberty_topdir)
40AC_CONFIG_AUX_DIR($libiberty_topdir)
41
42dnl Very limited version of automake's enable-maintainer-mode
43
44AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
45  dnl maintainer-mode is disabled by default
46  AC_ARG_ENABLE(maintainer-mode,
47[  --enable-maintainer-mode
48                          enable make rules and dependencies not useful
49                          (and sometimes confusing) to the casual installer],
50      maintainer_mode=$enableval,
51      maintainer_mode=no)
52
53AC_MSG_RESULT($maintainer_mode)
54
55if test "$maintainer_mode" = "yes"; then
56  MAINT=''
57  NOTMAINT='#'
58else
59  MAINT='#'
60  NOTMAINT=''
61fi
62AC_SUBST(MAINT)dnl
63AC_SUBST(NOTMAINT)dnl
64
65if test -z "$ETAGS"; then
66  ETAGS=etags
67fi
68AC_SUBST([ETAGS])
69
70# Do we have a single-tree copy of texinfo?  Even if we do, we can't
71# rely on it - libiberty is built before texinfo.
72AC_CHECK_PROG(MAKEINFO, makeinfo, makeinfo, )
73if test "x$MAKEINFO" = "x"; then
74    MAKEINFO="@echo makeinfo missing; true"
75    BUILD_INFO=
76else
77    BUILD_INFO=info
78    case "$MAKEINFO" in
79      */missing\ makeinfo*)
80	BUILD_INFO=
81	AC_MSG_WARN([
82*** Makeinfo is missing. Info documentation will not be built.])
83        ;;
84      *)
85	case x"`$MAKEINFO --version | grep 'GNU texinfo'`" in
86	  x*\ [[1-3]].* )
87	    MAKEINFO="@echo $MAKEINFO is too old, 4.0 or newer required; true"
88	    BUILD_INFO=
89	    AC_MSG_WARN([
90*** Makeinfo is too old. Info documentation will not be built.])
91	  ;;
92	esac
93	;;
94    esac
95fi
96AC_SUBST(MAKEINFO)
97AC_SUBST(BUILD_INFO)
98
99AC_CHECK_PROG(PERL, perl, perl, )
100if test x"$PERL" = x""; then
101  HAVE_PERL='#'
102else
103  HAVE_PERL=''
104fi
105AC_SUBST(HAVE_PERL)
106
107AC_CANONICAL_HOST
108
109dnl When we start using automake:
110dnl AM_INIT_AUTOMAKE(libiberty, 1.0)
111
112dnl These must be called before AM_PROG_LIBTOOL, because it may want
113dnl to call AC_CHECK_PROG.
114AC_CHECK_TOOL(AR, ar)
115AC_CHECK_TOOL(RANLIB, ranlib, :)
116
117GCC_PLUGIN_OPTION(PLUGIN_OPTION)
118if test -n "$PLUGIN_OPTION"; then
119  if $AR --help 2>&1 | grep -q "\--plugin"; then
120    AR_PLUGIN_OPTION="$PLUGIN_OPTION"
121    AC_SUBST(AR_PLUGIN_OPTION)
122  fi
123  if $RANLIB --help 2>&1 | grep -q "\--plugin"; then
124    RANLIB_PLUGIN_OPTION="$PLUGIN_OPTION"
125    AC_SUBST(RANLIB_PLUGIN_OPTION)
126  fi
127fi
128
129dnl When switching to automake, replace the following with AM_ENABLE_MULTILIB.
130# Add --enable-multilib to configure.
131# Default to --enable-multilib
132AC_ARG_ENABLE(multilib,
133[  --enable-multilib       build many library versions (default)],
134[case "$enableval" in
135  yes) multilib=yes ;;
136  no)  multilib=no ;;
137  *)   AC_MSG_ERROR([bad value $enableval for multilib option]) ;;
138 esac],
139	      [multilib=yes])
140
141# Even if the default multilib is not a cross compilation,
142# it may be that some of the other multilibs are.
143if test $cross_compiling = no && test $multilib = yes \
144   && test "x${with_multisubdir}" != x ; then
145   cross_compiling=maybe
146fi
147
148# We may wish to install the target headers somewhere.
149AC_MSG_CHECKING([whether to install libiberty headers and static library])
150dnl install-libiberty is disabled by default
151
152AC_ARG_ENABLE(install-libiberty,
153[  --enable-install-libiberty       Install headers and library for end users],
154enable_install_libiberty=$enableval,
155enable_install_libiberty=no)dnl
156
157# Option parsed, now set things appropriately.
158case x"$enable_install_libiberty" in
159  xyes|x)
160    target_header_dir=libiberty
161    ;;
162  xno)   
163    target_header_dir=
164    ;;
165  *) 
166    # This could be sanity-checked in various ways...
167    target_header_dir="${enable_install_libiberty}"
168    ;;
169esac
170AC_MSG_RESULT($enable_install_libiberty)
171AC_MSG_NOTICE([target_header_dir = $target_header_dir])
172
173GCC_NO_EXECUTABLES
174AC_PROG_CC
175AC_GNU_SOURCE
176AC_SYS_LARGEFILE
177AC_PROG_CPP_WERROR
178
179ACX_PROG_CC_WARNING_OPTS([-W -Wall -Wwrite-strings -Wc++-compat \
180			  -Wstrict-prototypes \
181			  -Wshadow=local], [ac_libiberty_warn_cflags])
182ACX_PROG_CC_WARNING_ALMOST_PEDANTIC([], [ac_libiberty_warn_cflags])
183
184AC_PROG_CC_C_O
185# autoconf is lame and doesn't give us any substitution variable for this.
186if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
187  NO_MINUS_C_MINUS_O=yes
188else
189  OUTPUT_OPTION='-o $@'
190fi
191AC_SUBST(NO_MINUS_C_MINUS_O)
192AC_SUBST(OUTPUT_OPTION)
193
194AC_C_CONST
195AC_C_INLINE
196AC_C_BIGENDIAN
197
198dnl When we start using libtool:
199dnl Default to a non shared library.  This may be overridden by the
200dnl configure option --enable-shared.
201dnl AM_DISABLE_SHARED
202
203dnl When we start using libtool:
204dnl AM_PROG_LIBTOOL
205
206dnl When we start using automake:
207dnl AM_CONFIG_HEADER(config.h:config.in)
208AC_CONFIG_HEADER(config.h:config.in)
209
210dnl When we start using automake:
211dnl AM_MAINTAINER_MODE
212dnl AC_EXEEXT
213
214dnl When we start using automake:
215dnl AM_PROG_INSTALL
216AC_PROG_INSTALL
217
218# Don't build the shared library for build.
219if [[ -n "${with_build_subdir}" ]]; then
220  enable_shared=no
221fi
222
223frag=
224case "${host}" in
225  rs6000-ibm-aix3.1 | rs6000-ibm-aix)
226                        frag=mh-aix ;;
227  *-*-cxux7*)		frag=mh-cxux7 ;;
228  *-*-freebsd2.1.*)	frag=mh-fbsd21 ;;
229  *-*-freebsd2.2.[[012]])	frag=mh-fbsd21 ;;
230  i370-*-opened*)       frag=mh-openedition ;;
231  i[[34567]]86-*-windows*)	frag=mh-windows ;;
232esac
233
234if [[ -n "${frag}" ]]; then
235  frag=${libiberty_topdir}/libiberty/config/$frag
236fi
237
238GCC_PICFLAG
239
240# If they didn't specify --enable-shared, don't generate shared libs.
241case "${enable_shared}" in
242  yes) shared=yes ;;
243  no) shared=no ;;
244  "") shared=no ;;
245  *) shared=yes ;;
246esac
247
248# ...unless --enable-host-shared was passed from top-level config:
249if [[ "${enable_host_shared}" = "yes" ]]; then
250  shared=yes
251fi
252
253if [[ "${shared}" != "yes" ]]; then
254  PICFLAG=
255fi
256AC_SUBST(PICFLAG)
257
258NOASANFLAG=
259case " ${CFLAGS} " in
260  *\ -fsanitize=address\ *) NOASANFLAG=-fno-sanitize=address ;;
261  *\ -fsanitize=hwaddress\ *) NOASANFLAG=-fno-sanitize=hwaddress ;;
262esac
263AC_SUBST(NOASANFLAG)
264
265GCC_CET_HOST_FLAGS(CET_HOST_FLAGS)
266AC_SUBST(CET_HOST_FLAGS)
267
268echo "# Warning: this fragment is automatically generated" > temp-frag
269
270if [[ -n "${frag}" ]] && [[ -f "${frag}" ]]; then
271  echo "Appending ${frag} to xhost-mkfrag"
272  echo "# Following fragment copied from ${frag}" >> temp-frag
273  cat ${frag} >> temp-frag
274fi
275
276# record if we want to build shared libs.
277if [[ "${shared}" = "yes" ]]; then
278  echo enable_shared = yes >> temp-frag
279else
280  echo enable_shared = no >> temp-frag
281fi
282
283frag=xhost-mkfrag
284${CONFIG_SHELL-/bin/sh} ${libiberty_topdir}/move-if-change temp-frag xhost-mkfrag
285
286host_makefile_frag=${frag}
287AC_SUBST_FILE(host_makefile_frag)
288
289# It's OK to check for header files.  Although the compiler may not be
290# able to link anything, it had better be able to at least compile
291# something.
292AC_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)
293AC_HEADER_SYS_WAIT
294AC_HEADER_TIME
295
296libiberty_AC_DECLARE_ERRNO
297
298# Determine sizes of some types.
299AC_CHECK_SIZEOF([int])
300AC_CHECK_SIZEOF([long])
301AC_CHECK_SIZEOF([size_t])
302
303# Check for presense of long long
304AC_CHECK_TYPE([long long],
305  [AC_DEFINE(HAVE_LONG_LONG, 1, [Define if you have the `long long' type.]) AC_CHECK_SIZEOF([long long])],
306  [])
307
308# Look for a 64-bit type.
309AC_MSG_CHECKING([for a 64-bit type])
310AC_CACHE_VAL(liberty_cv_uint64,
311[AC_TRY_COMPILE(
312[#ifdef HAVE_STDINT_H
313#include <stdint.h>
314#endif],
315[extern uint64_t foo;],
316liberty_cv_uint64=uint64_t,
317[AC_TRY_COMPILE(
318[#ifdef HAVE_LIMITS_H
319#include <limits.h>
320#endif
321#ifndef CHAR_BIT
322#define CHAR_BIT 8
323#endif],
324[extern char foo[sizeof(long) * CHAR_BIT >= 64 ? 1 : -1];],
325liberty_cv_uint64="unsigned long",
326[AC_TRY_COMPILE(
327[#ifdef HAVE_LIMITS_H
328#include <limits.h>
329#endif
330#ifndef CHAR_BIT
331#define CHAR_BIT 8
332#endif],
333[extern char foo[sizeof(long long) * CHAR_BIT >= 64 ? 1 : -1];],
334liberty_cv_uint64="unsigned long long", liberty_cv_uint64=none)])])])
335AC_MSG_RESULT($liberty_cv_uint64)
336if test "$liberty_cv_uint64" != none; then
337  AC_DEFINE_UNQUOTED(UNSIGNED_64BIT_TYPE, $liberty_cv_uint64,
338                     [Define to an unsigned 64-bit type available in the compiler.])
339fi
340
341AC_TYPE_INTPTR_T
342AC_TYPE_UINTPTR_T
343AC_TYPE_SSIZE_T
344
345# Given the above check, we always have uintptr_t or a fallback
346# definition.  So define HAVE_UINTPTR_T in case any imported code
347# relies on it.
348AC_DEFINE(HAVE_UINTPTR_T, 1, [Define if you have the \`uintptr_t' type.])
349
350AC_TYPE_PID_T
351
352# This is the list of functions which libiberty will provide if they
353# are not available on the host.
354
355funcs="asprintf"
356funcs="$funcs atexit"
357funcs="$funcs basename"
358funcs="$funcs bcmp"
359funcs="$funcs bcopy"
360funcs="$funcs bsearch"
361funcs="$funcs bzero"
362funcs="$funcs calloc"
363funcs="$funcs clock"
364funcs="$funcs ffs"
365funcs="$funcs getcwd"
366funcs="$funcs getpagesize"
367funcs="$funcs gettimeofday"
368funcs="$funcs index"
369funcs="$funcs insque"
370funcs="$funcs memchr"
371funcs="$funcs memcmp"
372funcs="$funcs memcpy"
373funcs="$funcs memmem"
374funcs="$funcs memmove"
375funcs="$funcs mempcpy"
376funcs="$funcs memset"
377funcs="$funcs mkstemps"
378funcs="$funcs putenv"
379funcs="$funcs random"
380funcs="$funcs rename"
381funcs="$funcs rindex"
382funcs="$funcs setenv"
383funcs="$funcs snprintf"
384funcs="$funcs sigsetmask"
385funcs="$funcs stpcpy"
386funcs="$funcs stpncpy"
387funcs="$funcs strcasecmp"
388funcs="$funcs strchr"
389funcs="$funcs strdup"
390funcs="$funcs strncasecmp"
391funcs="$funcs strndup"
392funcs="$funcs strnlen"
393funcs="$funcs strrchr"
394funcs="$funcs strstr"
395funcs="$funcs strtod"
396funcs="$funcs strtol"
397funcs="$funcs strtoul"
398funcs="$funcs strtoll"
399funcs="$funcs strtoull"
400funcs="$funcs strverscmp"
401funcs="$funcs tmpnam"
402funcs="$funcs vasprintf"
403funcs="$funcs vfprintf"
404funcs="$funcs vprintf"
405funcs="$funcs vsnprintf"
406funcs="$funcs vsprintf"
407funcs="$funcs waitpid"
408funcs="$funcs setproctitle"
409
410# Also in the old function.def file: alloca, vfork, getopt.
411
412vars="sys_errlist sys_nerr sys_siglist"
413
414checkfuncs="__fsetlocking canonicalize_file_name dup3 getrlimit getrusage \
415 getsysinfo gettimeofday on_exit pipe2 psignal pstat_getdynamic pstat_getstatic \
416 realpath setrlimit spawnve spawnvpe strerror strsignal sysconf sysctl \
417 sysmp table times wait3 wait4"
418
419#��Darwin has sbrk, but it is deprecated and that produces build-time warnings
420#��so do not check for it.
421case "${host}" in
422  *-*-darwin*) ;;
423  *) checkfuncs="$checkfuncs sbrk"
424esac
425
426# These are neither executed nor required, but they help keep
427# autoheader happy without adding a bunch of text to acconfig.h.
428if test "x" = "y"; then
429  AC_CHECK_FUNCS(asprintf atexit \
430    basename bcmp bcopy bsearch bzero \
431    calloc canonicalize_file_name clock \
432    dup3 \
433    ffs __fsetlocking \
434    getcwd getpagesize getrlimit getrusage getsysinfo gettimeofday \
435    index insque \
436    memchr memcmp memcpy memmem memmove memset mkstemps \
437    on_exit \
438    pipe2 psignal pstat_getdynamic pstat_getstatic putenv \
439    random realpath rename rindex \
440    sbrk setenv setproctitle setrlimit sigsetmask snprintf spawnve spawnvpe \
441     stpcpy stpncpy strcasecmp strchr strdup \
442     strerror strncasecmp strndup strnlen strrchr strsignal strstr strtod \
443     strtol strtoul strtoll strtoull strverscmp sysconf sysctl sysmp \
444    table times tmpnam \
445    vasprintf vfprintf vprintf vsprintf \
446    wait3 wait4 waitpid)
447  AC_CHECK_DECLS([basename(char *), ffs, asprintf, vasprintf, snprintf, vsnprintf, strtol, strtoul, strtoll, strtoull, strnlen])
448  AC_DEFINE(HAVE_SYS_ERRLIST, 1, [Define if you have the sys_errlist variable.])
449  AC_DEFINE(HAVE_SYS_NERR,    1, [Define if you have the sys_nerr variable.])
450  AC_DEFINE(HAVE_SYS_SIGLIST, 1, [Define if you have the sys_siglist variable.])
451fi
452
453# For each of these functions, if the host does not provide the
454# function we want to put FN.o in LIBOBJS, and if the host does
455# provide the function, we want to define HAVE_FN in config.h.
456
457setobjs=
458CHECK=
459if test -n "${with_target_subdir}"; then
460
461  # We are being configured as a target library.  AC_REPLACE_FUNCS
462  # may not work correctly, because the compiler may not be able to
463  # link executables.  Note that we may still be being configured
464  # native.
465
466  # If we are being configured for newlib, we know which functions
467  # newlib provide and which ones we will be expected to provide.
468
469  if test "x${with_newlib}" = "xyes"; then
470    AC_LIBOBJ([asprintf])
471    AC_LIBOBJ([basename])
472    AC_LIBOBJ([insque])
473    AC_LIBOBJ([random])
474    AC_LIBOBJ([strdup])
475    AC_LIBOBJ([vasprintf])
476
477    for f in $funcs; do
478      case "$f" in
479	asprintf | basename | insque | random | strdup | vasprintf)
480	  ;;
481	*)
482	  n=HAVE_`echo $f | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
483	  AC_DEFINE_UNQUOTED($n)
484	  ;;
485      esac
486    done
487
488    # newlib doesnt provide any of the variables in $vars, so we
489    # dont have to check them here.
490
491    # Of the functions in $checkfuncs, newlib only has strerror.
492    AC_DEFINE(HAVE_STRERROR)
493
494    setobjs=yes
495
496  fi
497
498  # If we are being configured for Mingw, we know which functions
499  # Mingw provides and which ones we will be expected to provide.
500
501  case "${host}" in
502  *-*-mingw*)
503    AC_LIBOBJ([asprintf])
504    AC_LIBOBJ([basename])
505    AC_LIBOBJ([bcmp])
506    AC_LIBOBJ([bcopy])
507    AC_LIBOBJ([bzero])
508    AC_LIBOBJ([clock])
509    AC_LIBOBJ([ffs])
510    AC_LIBOBJ([getpagesize])
511    AC_LIBOBJ([index])
512    AC_LIBOBJ([insque])
513    AC_LIBOBJ([mempcpy])
514    AC_LIBOBJ([mkstemps])
515    AC_LIBOBJ([random])
516    AC_LIBOBJ([rindex])
517    AC_LIBOBJ([sigsetmask])
518    AC_LIBOBJ([stpcpy])
519    AC_LIBOBJ([stpncpy])
520    AC_LIBOBJ([strndup])
521    AC_LIBOBJ([strnlen])
522    AC_LIBOBJ([strverscmp])
523    AC_LIBOBJ([vasprintf])
524    AC_LIBOBJ([waitpid])
525
526    for f in $funcs; do
527      case "$f" in
528	asprintf | basename | bcmp | bcopy | bzero | clock | ffs | getpagesize | index | insque | mempcpy | mkstemps | random | rindex | sigsetmask | stpcpy | stpncpy | strdup | strndup | strnlen | strverscmp | vasprintf | waitpid)
529	  ;;
530	*)
531	  n=HAVE_`echo $f | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
532	  AC_DEFINE_UNQUOTED($n)
533	  ;;
534      esac
535    done
536
537    # Mingw doesnt provide any of the variables in $vars, so we
538    # dont have to check them here.
539
540    # Of the functions in $checkfuncs, Mingw only has strerror.
541    AC_DEFINE(HAVE_STRERROR)
542
543    setobjs=yes
544    ;;
545
546  *-*-msdosdjgpp)
547    AC_LIBOBJ([vasprintf])
548    AC_LIBOBJ([vsnprintf])
549    AC_LIBOBJ([snprintf])
550    AC_LIBOBJ([asprintf])
551
552    for f in atexit basename bcmp bcopy bsearch bzero calloc clock ffs \
553             getcwd getpagesize getrusage gettimeofday \
554             index insque memchr memcmp memcpy memmove memset psignal \
555             putenv random rename rindex sbrk setenv stpcpy strcasecmp \
556             strchr strdup strerror strncasecmp strrchr strstr strtod \
557             strtol strtoul sysconf times tmpnam vfprintf vprintf \
558             vsprintf waitpid
559    do
560      n=HAVE_`echo $f | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
561      AC_DEFINE_UNQUOTED($n)
562    done
563
564
565    setobjs=yes
566    ;;
567
568  esac
569
570else
571
572   # Not a target library, so we set things up to run the test suite.
573   CHECK=really-check
574
575fi
576
577AC_SUBST(CHECK)
578AC_SUBST(target_header_dir)
579
580case "${host}" in
581  *-*-cygwin* | *-*-mingw*)
582    AC_DEFINE(HAVE_SYS_ERRLIST)
583    AC_DEFINE(HAVE_SYS_NERR)
584    ;;
585esac
586
587if test -z "${setobjs}"; then
588  case "${host}" in
589
590  *-*-vxworks*)
591    # Handle VxWorks configuration specially, since on VxWorks the
592    # libraries are actually on the target board, not in the file
593    # system.
594    AC_LIBOBJ([basename])
595    AC_LIBOBJ([getpagesize])
596    AC_LIBOBJ([insque])
597    AC_LIBOBJ([random])
598    AC_LIBOBJ([strcasecmp])
599    AC_LIBOBJ([strncasecmp])
600    AC_LIBOBJ([strdup])
601    AC_LIBOBJ([vfork])
602    AC_LIBOBJ([waitpid])
603    AC_LIBOBJ([vasprintf])
604    for f in $funcs; do
605      case "$f" in
606	basename | getpagesize | insque | random | strcasecmp)
607	  ;;
608	strncasecmp | strdup | vfork | waitpid | vasprintf)
609	  ;;
610	*)
611	  n=HAVE_`echo $f | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
612	  AC_DEFINE_UNQUOTED($n)
613	  ;;
614      esac
615    done
616
617    # VxWorks doesn't provide any of the variables in $vars, so we
618    # don't have to check them here.
619
620    # Of the functions in $checkfuncs, VxWorks only has strerror.
621    AC_DEFINE(HAVE_STRERROR)
622
623    setobjs=yes
624    ;;
625
626  esac
627fi
628
629if test -z "${setobjs}"; then
630
631  case "${host}" in
632
633  *-*-android*)
634    # On android, getpagesize is defined in unistd.h as a static inline
635    # function, which AC_CHECK_FUNCS does not handle properly.
636    ac_cv_func_getpagesize=yes
637    ;;
638
639  hppa*-*-hpux*)
640    # Replace system snprintf and vsnprintf with libiberty implementations.
641    AC_LIBOBJ([snprintf])
642    AC_LIBOBJ([vsnprintf])
643    ;;
644
645  *-*-mingw32*)
646    # Under mingw32, sys_nerr and sys_errlist exist, but they are
647    # macros, so the test below won't find them.
648    libiberty_cv_var_sys_nerr=yes
649    libiberty_cv_var_sys_errlist=yes
650    ;;
651
652  *-*-msdosdjgpp*)
653    # vfork and fork are stubs.
654    ac_cv_func_vfork_works=no
655    ;;
656
657  *-*-uwin*)
658    # Under some versions of uwin, vfork is notoriously buggy and the test 
659    # can hang configure; on other versions, vfork exists just as a stub.
660    # FIXME: This should be removed once vfork in uwin's runtime is fixed.
661    ac_cv_func_vfork_works=no
662    # Under uwin 2.0+, sys_nerr and sys_errlist exist, but they are
663    # macros (actually, these are imported from a DLL, but the end effect 
664    # is the same), so the test below won't find them.
665    libiberty_cv_var_sys_nerr=yes
666    libiberty_cv_var_sys_errlist=yes
667    ;;
668
669  *-*-*vms*)
670    # Under VMS, vfork works very different than on Unix. The standard test 
671    # won't work, and it isn't easily adaptable. It makes more sense to
672    # just force it.
673    ac_cv_func_vfork_works=yes
674    ;;
675
676  esac
677
678  # We haven't set the list of objects yet.  Use the standard autoconf
679  # tests.  This will only work if the compiler works.
680  AC_ISC_POSIX
681  AC_REPLACE_FUNCS($funcs)
682  libiberty_AC_FUNC_C_ALLOCA
683  AC_FUNC_FORK
684  if test $ac_cv_func_vfork_works = no; then
685    AC_LIBOBJ([vfork])
686  fi
687  # We only need _doprnt if we might use it to implement v*printf.
688  if test $ac_cv_func_vprintf != yes \
689     || test $ac_cv_func_vfprintf != yes \
690     || test $ac_cv_func_vsprintf != yes; then
691    AC_REPLACE_FUNCS(_doprnt)
692  else
693    AC_CHECK_FUNCS(_doprnt)
694  fi
695
696  for v in $vars; do
697    AC_MSG_CHECKING([for $v])
698    AC_CACHE_VAL(libiberty_cv_var_$v,
699      [AC_LINK_IFELSE([AC_LANG_PROGRAM([[extern int $v [];]],[[if ($v [0]) return 1;]])],
700		      [eval "libiberty_cv_var_$v=yes"],
701		      [eval "libiberty_cv_var_$v=no"])])
702    if eval "test \"`echo '$libiberty_cv_var_'$v`\" = yes"; then
703      AC_MSG_RESULT(yes)
704      n=HAVE_`echo $v | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
705      AC_DEFINE_UNQUOTED($n)
706    else
707      AC_MSG_RESULT(no)
708    fi
709  done
710
711  # special check for _system_configuration because AIX <4.3.2 do not
712  # contain the `physmem' member.
713  AC_MSG_CHECKING([for external symbol _system_configuration])
714  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/systemcfg.h>]],
715			[[double x = _system_configuration.physmem;]])],
716    [AC_MSG_RESULT([yes])
717    AC_DEFINE(HAVE__SYSTEM_CONFIGURATION, 1,
718	      [Define if you have the _system_configuration variable.])],
719    [AC_MSG_RESULT([no])])
720
721  AC_CHECK_FUNCS($checkfuncs)
722  AC_CHECK_DECLS([basename(char *), ffs, asprintf, vasprintf, snprintf, vsnprintf])
723  AC_CHECK_DECLS([calloc, getenv, getopt, malloc, realloc])
724  case "${host}" in
725      *-*-darwin*) ;; # Darwin's sbrk implementation is deprecated.
726      *) AC_CHECK_DECLS([sbrk]);;
727  esac
728  AC_CHECK_DECLS([strtol, strtoul, strtoll, strtoull])
729  AC_CHECK_DECLS([strverscmp])
730  AC_CHECK_DECLS([strnlen])
731  libiberty_NEED_DECLARATION(canonicalize_file_name)
732fi
733
734# Figure out which version of pexecute to use.
735case "${host}" in
736     *-*-mingw* | *-*-winnt*)	pexecute=pex-win32  ;;
737     *-*-msdosdjgpp*)		pexecute=pex-djgpp  ;;
738     *-*-msdos*)		pexecute=pex-msdos  ;;
739     *)				pexecute=pex-unix   ;;
740esac
741AC_SUBST(pexecute)
742
743libiberty_AC_FUNC_STRNCMP
744
745# Install a library built with a cross compiler in $(tooldir) rather
746# than $(libdir).
747if test -z "${with_cross_host}"; then
748  INSTALL_DEST=libdir
749else
750  INSTALL_DEST=tooldir
751fi
752AC_SUBST(INSTALL_DEST)
753
754m4_pattern_allow(LIBOBJS)
755L=""
756for l in x $LIBOBJS; do
757  case $l in
758    x) ;;
759    *) L="$L ./$l" ;;
760  esac
761done
762LIBOBJS="$L"
763
764dnl Required by html and install-html
765AC_SUBST(datarootdir)
766AC_SUBST(docdir)
767AC_SUBST(htmldir)
768
769# We need multilib support, but only if configuring for the target.
770AC_CONFIG_FILES([Makefile testsuite/Makefile])
771AC_CONFIG_COMMANDS([default],
772  [[test -z "$CONFIG_HEADERS" || echo timestamp > stamp-h
773if test -n "$CONFIG_FILES"; then
774  if test -n "${with_target_subdir}"; then
775    # FIXME: We shouldn't need to set ac_file
776    ac_file=Makefile
777    LD="${ORIGINAL_LD_FOR_MULTILIBS}"
778    . ${libiberty_topdir}/config-ml.in
779  fi
780fi]],
781[[srcdir=${srcdir}
782host=${host}
783target=${target}
784with_target_subdir=${with_target_subdir}
785with_multisubdir=${with_multisubdir}
786ac_configure_args="--enable-multilib ${ac_configure_args}"
787CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
788ORIGINAL_LD_FOR_MULTILIBS="${ORIGINAL_LD_FOR_MULTILIBS}"
789libiberty_topdir=${libiberty_topdir}
790]])
791AC_OUTPUT
792