1dnl Process this file with autoconf to produce a configure script
2
3AC_PREREQ(2.64)
4AC_INIT
5AC_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...
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
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.
67AC_CHECK_PROG(MAKEINFO, makeinfo, makeinfo, )
68if test "x$MAKEINFO" = "x"; then
69    MAKEINFO="@echo makeinfo missing; true"
70    BUILD_INFO=
71else
72    BUILD_INFO=info
73    case "$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 $MAKEINFO is too old, 4.0 or newer required; true"
83	    BUILD_INFO=
84	    AC_MSG_WARN([
85*** Makeinfo is too old. Info documentation will not be built.])
86	  ;;
87	esac
88	;;
89    esac
90fi
91AC_SUBST(MAKEINFO)
92AC_SUBST(BUILD_INFO)
93
94AC_CHECK_PROG(PERL, perl, perl, )
95if test x"$PERL" = x""; then
96  HAVE_PERL='#'
97else
98  HAVE_PERL=''
99fi
100AC_SUBST(HAVE_PERL)
101
102AC_CANONICAL_HOST
103
104dnl When we start using automake:
105dnl AM_INIT_AUTOMAKE(libiberty, 1.0)
106
107dnl These must be called before AM_PROG_LIBTOOL, because it may want
108dnl to call AC_CHECK_PROG.
109AC_CHECK_TOOL(AR, ar)
110AC_CHECK_TOOL(RANLIB, ranlib, :)
111
112dnl When switching to automake, replace the following with AM_ENABLE_MULTILIB.
113# Add --enable-multilib to configure.
114# Default to --enable-multilib
115AC_ARG_ENABLE(multilib,
116[  --enable-multilib       build many library versions (default)],
117[case "$enableval" in
118  yes) multilib=yes ;;
119  no)  multilib=no ;;
120  *)   AC_MSG_ERROR([bad value $enableval for multilib option]) ;;
121 esac],
122	      [multilib=yes])
123
124# Even if the default multilib is not a cross compilation,
125# it may be that some of the other multilibs are.
126if test $cross_compiling = no && test $multilib = yes \
127   && test "x${with_multisubdir}" != x ; then
128   cross_compiling=maybe
129fi
130
131# We may wish to install the target headers somewhere.
132AC_MSG_CHECKING([whether to install libiberty headers and static library])
133dnl install-libiberty is disabled by default
134
135AC_ARG_ENABLE(install-libiberty,
136[  --enable-install-libiberty       Install headers and library for end users],
137enable_install_libiberty=$enableval,
138enable_install_libiberty=no)dnl
139
140# Option parsed, now set things appropriately.
141case x"$enable_install_libiberty" in
142  xyes|x)
143    target_header_dir=libiberty
144    ;;
145  xno)
146    target_header_dir=
147    ;;
148  *)
149    # This could be sanity-checked in various ways...
150    target_header_dir="${enable_install_libiberty}"
151    ;;
152esac
153AC_MSG_RESULT($enable_install_libiberty)
154AC_MSG_NOTICE([target_header_dir = $target_header_dir])
155
156GCC_NO_EXECUTABLES
157AC_PROG_CC
158AC_GNU_SOURCE
159AC_SYS_LARGEFILE
160AC_PROG_CPP_WERROR
161
162ACX_PROG_CC_WARNING_OPTS([-W -Wall -Wwrite-strings -Wc++-compat \
163			  -Wstrict-prototypes], [ac_libiberty_warn_cflags])
164ACX_PROG_CC_WARNING_ALMOST_PEDANTIC([], [ac_libiberty_warn_cflags])
165
166AC_PROG_CC_C_O
167# autoconf is lame and doesn't give us any substitution variable for this.
168if eval "test \"`echo '$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 " ${CFLAGS} " in
242  *\ -fsanitize=address\ *) NOASANFLAG=-fno-sanitize=address ;;
243esac
244AC_SUBST(NOASANFLAG)
245
246echo "# Warning: this fragment is automatically generated" > temp-frag
247
248if [[ -n "${frag}" ]] && [[ -f "${frag}" ]]; then
249  echo "Appending ${frag} to xhost-mkfrag"
250  echo "# Following fragment copied from ${frag}" >> temp-frag
251  cat ${frag} >> temp-frag
252fi
253
254# record if we want to build shared libs.
255if [[ "${shared}" = "yes" ]]; then
256  echo enable_shared = yes >> temp-frag
257else
258  echo enable_shared = no >> temp-frag
259fi
260
261frag=xhost-mkfrag
262${CONFIG_SHELL-/bin/sh} ${libiberty_topdir}/move-if-change temp-frag xhost-mkfrag
263
264host_makefile_frag=${frag}
265AC_SUBST_FILE(host_makefile_frag)
266
267# It's OK to check for header files.  Although the compiler may not be
268# able to link anything, it had better be able to at least compile
269# something.
270AC_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)
271AC_HEADER_SYS_WAIT
272AC_HEADER_TIME
273
274libiberty_AC_DECLARE_ERRNO
275
276# Determine sizes of some types.
277AC_CHECK_SIZEOF([int])
278AC_CHECK_SIZEOF([long])
279AC_CHECK_SIZEOF([size_t])
280
281# Check for presense of long long
282AC_CHECK_TYPE([long long],
283  [AC_DEFINE(HAVE_LONG_LONG, 1, [Define if you have the `long long' type.]) AC_CHECK_SIZEOF([long long])],
284  [])
285
286# Look for a 64-bit type.
287AC_MSG_CHECKING([for a 64-bit type])
288AC_CACHE_VAL(liberty_cv_uint64,
289[AC_TRY_COMPILE(
290[#ifdef HAVE_STDINT_H
291#include <stdint.h>
292#endif],
293[extern uint64_t foo;],
294liberty_cv_uint64=uint64_t,
295[AC_TRY_COMPILE(
296[#ifdef HAVE_LIMITS_H
297#include <limits.h>
298#endif
299#ifndef CHAR_BIT
300#define CHAR_BIT 8
301#endif],
302[extern char foo[sizeof(long) * CHAR_BIT >= 64 ? 1 : -1];],
303liberty_cv_uint64="unsigned long",
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 long) * CHAR_BIT >= 64 ? 1 : -1];],
312liberty_cv_uint64="unsigned long long", liberty_cv_uint64=none)])])])
313AC_MSG_RESULT($liberty_cv_uint64)
314if test "$liberty_cv_uint64" != none; then
315  AC_DEFINE_UNQUOTED(UNSIGNED_64BIT_TYPE, $liberty_cv_uint64,
316                     [Define to an unsigned 64-bit type available in the compiler.])
317fi
318
319AC_TYPE_INTPTR_T
320AC_TYPE_UINTPTR_T
321AC_TYPE_SSIZE_T
322
323# Given the above check, we always have uintptr_t or a fallback
324# definition.  So define HAVE_UINTPTR_T in case any imported code
325# relies on it.
326AC_DEFINE(HAVE_UINTPTR_T, 1, [Define if you have the \`uintptr_t' type.])
327
328AC_TYPE_PID_T
329
330# This is the list of functions which libiberty will provide if they
331# are not available on the host.
332
333funcs="asprintf"
334funcs="$funcs atexit"
335funcs="$funcs basename"
336funcs="$funcs bcmp"
337funcs="$funcs bcopy"
338funcs="$funcs bsearch"
339funcs="$funcs bzero"
340funcs="$funcs calloc"
341funcs="$funcs clock"
342funcs="$funcs ffs"
343funcs="$funcs getcwd"
344funcs="$funcs getpagesize"
345funcs="$funcs gettimeofday"
346funcs="$funcs index"
347funcs="$funcs insque"
348funcs="$funcs memchr"
349funcs="$funcs memcmp"
350funcs="$funcs memcpy"
351funcs="$funcs memmem"
352funcs="$funcs memmove"
353funcs="$funcs mempcpy"
354funcs="$funcs memset"
355funcs="$funcs mkstemps"
356funcs="$funcs putenv"
357funcs="$funcs random"
358funcs="$funcs rename"
359funcs="$funcs rindex"
360funcs="$funcs setenv"
361funcs="$funcs snprintf"
362funcs="$funcs sigsetmask"
363funcs="$funcs stpcpy"
364funcs="$funcs stpncpy"
365funcs="$funcs strcasecmp"
366funcs="$funcs strchr"
367funcs="$funcs strdup"
368funcs="$funcs strncasecmp"
369funcs="$funcs strndup"
370funcs="$funcs strnlen"
371funcs="$funcs strrchr"
372funcs="$funcs strstr"
373funcs="$funcs strtod"
374funcs="$funcs strtol"
375funcs="$funcs strtoul"
376funcs="$funcs strtoll"
377funcs="$funcs strtoull"
378funcs="$funcs strverscmp"
379funcs="$funcs tmpnam"
380funcs="$funcs vasprintf"
381funcs="$funcs vfprintf"
382funcs="$funcs vprintf"
383funcs="$funcs vsnprintf"
384funcs="$funcs vsprintf"
385funcs="$funcs waitpid"
386funcs="$funcs setproctitle"
387
388# Also in the old function.def file: alloca, vfork, getopt.
389
390vars="sys_errlist sys_nerr sys_siglist"
391
392checkfuncs="__fsetlocking canonicalize_file_name dup3 getrlimit getrusage \
393 getsysinfo gettimeofday on_exit psignal pstat_getdynamic pstat_getstatic \
394 realpath setrlimit sbrk spawnve spawnvpe strerror strsignal sysconf sysctl \
395 sysmp table times wait3 wait4"
396
397# These are neither executed nor required, but they help keep
398# autoheader happy without adding a bunch of text to acconfig.h.
399if test "x" = "y"; then
400  AC_CHECK_FUNCS(asprintf atexit \
401    basename bcmp bcopy bsearch bzero \
402    calloc canonicalize_file_name clock \
403    dup3 \
404    ffs __fsetlocking \
405    getcwd getpagesize getrlimit getrusage getsysinfo gettimeofday \
406    index insque \
407    memchr memcmp memcpy memmem memmove memset mkstemps \
408    on_exit \
409    psignal pstat_getdynamic pstat_getstatic putenv \
410    random realpath rename rindex \
411    sbrk setenv setproctitle setrlimit sigsetmask snprintf spawnve spawnvpe \
412     stpcpy stpncpy strcasecmp strchr strdup \
413     strerror strncasecmp strndup strnlen strrchr strsignal strstr strtod \
414     strtol strtoul strtoll strtoull strverscmp sysconf sysctl sysmp \
415    table times tmpnam \
416    vasprintf vfprintf vprintf vsprintf \
417    wait3 wait4 waitpid)
418  AC_CHECK_DECLS([basename(char *), ffs, asprintf, vasprintf, snprintf, vsnprintf, strtol, strtoul, strtoll, strtoull])
419  AC_DEFINE(HAVE_SYS_ERRLIST, 1, [Define if you have the sys_errlist variable.])
420  AC_DEFINE(HAVE_SYS_NERR,    1, [Define if you have the sys_nerr variable.])
421  AC_DEFINE(HAVE_SYS_SIGLIST, 1, [Define if you have the sys_siglist variable.])
422fi
423
424# For each of these functions, if the host does not provide the
425# function we want to put FN.o in LIBOBJS, and if the host does
426# provide the function, we want to define HAVE_FN in config.h.
427
428setobjs=
429CHECK=
430if test -n "${with_target_subdir}"; then
431
432  # We are being configured as a target library.  AC_REPLACE_FUNCS
433  # may not work correctly, because the compiler may not be able to
434  # link executables.  Note that we may still be being configured
435  # native.
436
437  # If we are being configured for newlib, we know which functions
438  # newlib provide and which ones we will be expected to provide.
439
440  if test "x${with_newlib}" = "xyes"; then
441    AC_LIBOBJ([asprintf])
442    AC_LIBOBJ([basename])
443    AC_LIBOBJ([insque])
444    AC_LIBOBJ([random])
445    AC_LIBOBJ([strdup])
446    AC_LIBOBJ([vasprintf])
447
448    for f in $funcs; do
449      case "$f" in
450	asprintf | basename | insque | random | strdup | vasprintf)
451	  ;;
452	*)
453	  n=HAVE_`echo $f | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
454	  AC_DEFINE_UNQUOTED($n)
455	  ;;
456      esac
457    done
458
459    # newlib doesnt provide any of the variables in $vars, so we
460    # dont have to check them here.
461
462    # Of the functions in $checkfuncs, newlib only has strerror.
463    AC_DEFINE(HAVE_STRERROR)
464
465    setobjs=yes
466
467  fi
468
469  # If we are being configured for Mingw, we know which functions
470  # Mingw provides and which ones we will be expected to provide.
471
472  case "${host}" in
473  *-*-mingw*)
474    AC_LIBOBJ([asprintf])
475    AC_LIBOBJ([basename])
476    AC_LIBOBJ([bcmp])
477    AC_LIBOBJ([bcopy])
478    AC_LIBOBJ([bzero])
479    AC_LIBOBJ([clock])
480    AC_LIBOBJ([ffs])
481    AC_LIBOBJ([getpagesize])
482    AC_LIBOBJ([index])
483    AC_LIBOBJ([insque])
484    AC_LIBOBJ([mempcpy])
485    AC_LIBOBJ([mkstemps])
486    AC_LIBOBJ([random])
487    AC_LIBOBJ([rindex])
488    AC_LIBOBJ([sigsetmask])
489    AC_LIBOBJ([stpcpy])
490    AC_LIBOBJ([stpncpy])
491    AC_LIBOBJ([strndup])
492    AC_LIBOBJ([strnlen])
493    AC_LIBOBJ([strverscmp])
494    AC_LIBOBJ([vasprintf])
495    AC_LIBOBJ([waitpid])
496
497    for f in $funcs; do
498      case "$f" in
499	asprintf | basename | bcmp | bcopy | bzero | clock | ffs | getpagesize | index | insque | mempcpy | mkstemps | random | rindex | sigsetmask | stpcpy | stpncpy | strdup | strndup | strnlen | strverscmp | vasprintf | waitpid)
500	  ;;
501	*)
502	  n=HAVE_`echo $f | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
503	  AC_DEFINE_UNQUOTED($n)
504	  ;;
505      esac
506    done
507
508    # Mingw doesnt provide any of the variables in $vars, so we
509    # dont have to check them here.
510
511    # Of the functions in $checkfuncs, Mingw only has strerror.
512    AC_DEFINE(HAVE_STRERROR)
513
514    setobjs=yes
515    ;;
516
517  *-*-msdosdjgpp)
518    AC_LIBOBJ([vasprintf])
519    AC_LIBOBJ([vsnprintf])
520    AC_LIBOBJ([snprintf])
521    AC_LIBOBJ([asprintf])
522
523    for f in atexit basename bcmp bcopy bsearch bzero calloc clock ffs \
524             getcwd getpagesize getrusage gettimeofday \
525             index insque memchr memcmp memcpy memmove memset psignal \
526             putenv random rename rindex sbrk setenv stpcpy strcasecmp \
527             strchr strdup strerror strncasecmp strrchr strstr strtod \
528             strtol strtoul sysconf times tmpnam vfprintf vprintf \
529             vsprintf waitpid
530    do
531      n=HAVE_`echo $f | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
532      AC_DEFINE_UNQUOTED($n)
533    done
534
535
536    setobjs=yes
537    ;;
538
539  esac
540
541else
542
543   # Not a target library, so we set things up to run the test suite.
544   CHECK=really-check
545
546fi
547
548AC_SUBST(CHECK)
549AC_SUBST(target_header_dir)
550
551case "${host}" in
552  *-*-cygwin* | *-*-mingw*)
553    AC_DEFINE(HAVE_SYS_ERRLIST)
554    AC_DEFINE(HAVE_SYS_NERR)
555    ;;
556esac
557
558if test -z "${setobjs}"; then
559  case "${host}" in
560
561  *-*-vxworks*)
562    # Handle VxWorks configuration specially, since on VxWorks the
563    # libraries are actually on the target board, not in the file
564    # system.
565    AC_LIBOBJ([basename])
566    AC_LIBOBJ([getpagesize])
567    AC_LIBOBJ([insque])
568    AC_LIBOBJ([random])
569    AC_LIBOBJ([strcasecmp])
570    AC_LIBOBJ([strncasecmp])
571    AC_LIBOBJ([strdup])
572    AC_LIBOBJ([vfork])
573    AC_LIBOBJ([waitpid])
574    AC_LIBOBJ([vasprintf])
575    for f in $funcs; do
576      case "$f" in
577	basename | getpagesize | insque | random | strcasecmp)
578	  ;;
579	strncasecmp | strdup | vfork | waitpid | vasprintf)
580	  ;;
581	*)
582	  n=HAVE_`echo $f | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
583	  AC_DEFINE_UNQUOTED($n)
584	  ;;
585      esac
586    done
587
588    # VxWorks doesn't provide any of the variables in $vars, so we
589    # don't have to check them here.
590
591    # Of the functions in $checkfuncs, VxWorks only has strerror.
592    AC_DEFINE(HAVE_STRERROR)
593
594    setobjs=yes
595    ;;
596
597  esac
598fi
599
600if test -z "${setobjs}"; then
601
602  case "${host}" in
603
604  *-*-android*)
605    # On android, getpagesize is defined in unistd.h as a static inline
606    # function, which AC_CHECK_FUNCS does not handle properly.
607    ac_cv_func_getpagesize=yes
608    ;;
609
610  *-*-mingw32*)
611    # Under mingw32, sys_nerr and sys_errlist exist, but they are
612    # macros, so the test below won't find them.
613    libiberty_cv_var_sys_nerr=yes
614    libiberty_cv_var_sys_errlist=yes
615    ;;
616
617  *-*-msdosdjgpp*)
618    # vfork and fork are stubs.
619    ac_cv_func_vfork_works=no
620    ;;
621
622  *-*-uwin*)
623    # Under some versions of uwin, vfork is notoriously buggy and the test
624    # can hang configure; on other versions, vfork exists just as a stub.
625    # FIXME: This should be removed once vfork in uwin's runtime is fixed.
626    ac_cv_func_vfork_works=no
627    # Under uwin 2.0+, sys_nerr and sys_errlist exist, but they are
628    # macros (actually, these are imported from a DLL, but the end effect
629    # is the same), so the test below won't find them.
630    libiberty_cv_var_sys_nerr=yes
631    libiberty_cv_var_sys_errlist=yes
632    ;;
633
634  *-*-*vms*)
635    # Under VMS, vfork works very different than on Unix. The standard test
636    # won't work, and it isn't easily adaptable. It makes more sense to
637    # just force it.
638    ac_cv_func_vfork_works=yes
639    ;;
640
641  esac
642
643  # We haven't set the list of objects yet.  Use the standard autoconf
644  # tests.  This will only work if the compiler works.
645  AC_ISC_POSIX
646  AC_REPLACE_FUNCS($funcs)
647  libiberty_AC_FUNC_C_ALLOCA
648  AC_FUNC_FORK
649  if test $ac_cv_func_vfork_works = no; then
650    AC_LIBOBJ([vfork])
651  fi
652  # We only need _doprnt if we might use it to implement v*printf.
653  if test $ac_cv_func_vprintf != yes \
654     || test $ac_cv_func_vfprintf != yes \
655     || test $ac_cv_func_vsprintf != yes; then
656    AC_REPLACE_FUNCS(_doprnt)
657  else
658    AC_CHECK_FUNCS(_doprnt)
659  fi
660
661  for v in $vars; do
662    AC_MSG_CHECKING([for $v])
663    AC_CACHE_VAL(libiberty_cv_var_$v,
664      [AC_LINK_IFELSE([AC_LANG_PROGRAM([[int *p;]],[[extern int $v []; p = $v;]])],
665		      [eval "libiberty_cv_var_$v=yes"],
666		      [eval "libiberty_cv_var_$v=no"])])
667    if eval "test \"`echo '$libiberty_cv_var_'$v`\" = yes"; then
668      AC_MSG_RESULT(yes)
669      n=HAVE_`echo $v | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
670      AC_DEFINE_UNQUOTED($n)
671    else
672      AC_MSG_RESULT(no)
673    fi
674  done
675
676  # special check for _system_configuration because AIX <4.3.2 do not
677  # contain the `physmem' member.
678  AC_MSG_CHECKING([for external symbol _system_configuration])
679  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/systemcfg.h>]],
680			[[double x = _system_configuration.physmem;]])],
681    [AC_MSG_RESULT([yes])
682    AC_DEFINE(HAVE__SYSTEM_CONFIGURATION, 1,
683	      [Define if you have the _system_configuration variable.])],
684    [AC_MSG_RESULT([no])])
685
686  AC_CHECK_FUNCS($checkfuncs)
687  AC_CHECK_DECLS([basename(char *), ffs, asprintf, vasprintf, snprintf, vsnprintf])
688  AC_CHECK_DECLS([calloc, getenv, getopt, malloc, realloc, sbrk])
689  AC_CHECK_DECLS([strtol, strtoul, strtoll, strtoull])
690  AC_CHECK_DECLS([strverscmp])
691  libiberty_NEED_DECLARATION(canonicalize_file_name)
692fi
693
694# Figure out which version of pexecute to use.
695case "${host}" in
696     *-*-mingw* | *-*-winnt*)	pexecute=pex-win32  ;;
697     *-*-msdosdjgpp*)		pexecute=pex-djgpp  ;;
698     *-*-msdos*)		pexecute=pex-msdos  ;;
699     *)				pexecute=pex-unix   ;;
700esac
701AC_SUBST(pexecute)
702
703libiberty_AC_FUNC_STRNCMP
704
705# Install a library built with a cross compiler in $(tooldir) rather
706# than $(libdir).
707if test -z "${with_cross_host}"; then
708  INSTALL_DEST=libdir
709else
710  INSTALL_DEST=tooldir
711fi
712AC_SUBST(INSTALL_DEST)
713
714m4_pattern_allow(LIBOBJS)
715L=""
716for l in x $LIBOBJS; do
717  case $l in
718    x) ;;
719    *) L="$L ./$l" ;;
720  esac
721done
722LIBOBJS="$L"
723
724dnl Required by html and install-html
725AC_SUBST(datarootdir)
726AC_SUBST(docdir)
727AC_SUBST(htmldir)
728
729# We need multilib support, but only if configuring for the target.
730AC_CONFIG_FILES([Makefile testsuite/Makefile])
731AC_CONFIG_COMMANDS([default],
732  [[test -z "$CONFIG_HEADERS" || echo timestamp > stamp-h
733if test -n "$CONFIG_FILES"; then
734  if test -n "${with_target_subdir}"; then
735    # FIXME: We shouldn't need to set ac_file
736    ac_file=Makefile
737    LD="${ORIGINAL_LD_FOR_MULTILIBS}"
738    . ${libiberty_topdir}/config-ml.in
739  fi
740fi]],
741[[srcdir=${srcdir}
742host=${host}
743target=${target}
744with_target_subdir=${with_target_subdir}
745with_multisubdir=${with_multisubdir}
746ac_configure_args="--enable-multilib ${ac_configure_args}"
747CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
748ORIGINAL_LD_FOR_MULTILIBS="${ORIGINAL_LD_FOR_MULTILIBS}"
749libiberty_topdir=${libiberty_topdir}
750]])
751AC_OUTPUT
752