configure.ac revision 1.1.1.2.8.1
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
131GCC_NO_EXECUTABLES
132AC_PROG_CC
133AC_SYS_LARGEFILE
134AC_PROG_CPP_WERROR
135
136ACX_PROG_CC_WARNING_OPTS([-W -Wall -Wwrite-strings -Wc++-compat \
137			  -Wstrict-prototypes], [ac_libiberty_warn_cflags])
138ACX_PROG_CC_WARNING_ALMOST_PEDANTIC([], [ac_libiberty_warn_cflags])
139
140AC_PROG_CC_C_O
141# autoconf is lame and doesn't give us any substitution variable for this.
142if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
143  NO_MINUS_C_MINUS_O=yes
144else
145  OUTPUT_OPTION='-o $@'
146fi
147AC_SUBST(NO_MINUS_C_MINUS_O)
148AC_SUBST(OUTPUT_OPTION)
149
150AC_C_CONST
151AC_C_INLINE
152AC_C_BIGENDIAN
153
154dnl When we start using libtool:
155dnl Default to a non shared library.  This may be overridden by the
156dnl configure option --enable-shared.
157dnl AM_DISABLE_SHARED
158
159dnl When we start using libtool:
160dnl AM_PROG_LIBTOOL
161
162dnl When we start using automake:
163dnl AM_CONFIG_HEADER(config.h:config.in)
164AC_CONFIG_HEADER(config.h:config.in)
165
166dnl When we start using automake:
167dnl AM_MAINTAINER_MODE
168dnl AC_EXEEXT
169
170dnl When we start using automake:
171dnl AM_PROG_INSTALL
172AC_PROG_INSTALL
173
174# Don't build the shared library for build.
175if [[ -n "${with_build_subdir}" ]]; then
176  enable_shared=no
177fi
178
179frag=
180case "${host}" in
181  rs6000-ibm-aix3.1 | rs6000-ibm-aix)
182                        frag=mh-aix ;;
183  *-*-cxux7*)		frag=mh-cxux7 ;;
184  *-*-freebsd2.1.*)	frag=mh-fbsd21 ;;
185  *-*-freebsd2.2.[[012]])	frag=mh-fbsd21 ;;
186  i370-*-opened*)       frag=mh-openedition ;;
187  i[[34567]]86-*-windows*)	frag=mh-windows ;;
188esac
189
190if [[ -n "${frag}" ]]; then
191  frag=${libiberty_topdir}/libiberty/config/$frag
192fi
193
194GCC_PICFLAG
195
196# If they didn't specify --enable-shared, don't generate shared libs.
197case "${enable_shared}" in
198  yes) shared=yes ;;
199  no) shared=no ;;
200  "") shared=no ;;
201  *) shared=yes ;;
202esac
203if [[ "${shared}" != "yes" ]]; then
204  PICFLAG=
205fi
206AC_SUBST(PICFLAG)
207
208echo "# Warning: this fragment is automatically generated" > temp-frag
209
210if [[ -n "${frag}" ]] && [[ -f "${frag}" ]]; then
211  echo "Appending ${frag} to xhost-mkfrag"
212  echo "# Following fragment copied from ${frag}" >> temp-frag
213  cat ${frag} >> temp-frag
214fi
215
216# record if we want to build shared libs.
217if [[ "${shared}" = "yes" ]]; then
218  echo enable_shared = yes >> temp-frag
219else
220  echo enable_shared = no >> temp-frag
221fi
222
223frag=xhost-mkfrag
224${CONFIG_SHELL-/bin/sh} ${libiberty_topdir}/move-if-change temp-frag xhost-mkfrag
225
226host_makefile_frag=${frag}
227AC_SUBST_FILE(host_makefile_frag)
228
229# It's OK to check for header files.  Although the compiler may not be
230# able to link anything, it had better be able to at least compile
231# something.
232AC_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)
233AC_HEADER_SYS_WAIT
234AC_HEADER_TIME
235
236libiberty_AC_DECLARE_ERRNO
237
238# Determine the size of an int for struct fibnode.
239AC_CHECK_SIZEOF([int])
240
241# Look for a 64-bit type.
242AC_MSG_CHECKING([for a 64-bit type])
243AC_CACHE_VAL(liberty_cv_uint64,
244[AC_TRY_COMPILE(
245[#ifdef HAVE_STDINT_H
246#include <stdint.h>
247#endif],
248[extern uint64_t foo;],
249liberty_cv_uint64=uint64_t,
250[AC_TRY_COMPILE(
251[#ifdef HAVE_LIMITS_H
252#include <limits.h>
253#endif
254#ifndef CHAR_BIT
255#define CHAR_BIT 8
256#endif],
257[extern char foo[sizeof(long) * CHAR_BIT >= 64 ? 1 : -1];],
258liberty_cv_uint64="unsigned long",
259[AC_TRY_COMPILE(
260[#ifdef HAVE_LIMITS_H
261#include <limits.h>
262#endif
263#ifndef CHAR_BIT
264#define CHAR_BIT 8
265#endif],
266[extern char foo[sizeof(long long) * CHAR_BIT >= 64 ? 1 : -1];],
267liberty_cv_uint64="unsigned long long", liberty_cv_uint64=none)])])])
268AC_MSG_RESULT($liberty_cv_uint64)
269if test "$liberty_cv_uint64" != none; then
270  AC_DEFINE_UNQUOTED(UNSIGNED_64BIT_TYPE, $liberty_cv_uint64,
271                     [Define to an unsigned 64-bit type available in the compiler.])
272fi
273
274AC_TYPE_INTPTR_T
275AC_TYPE_UINTPTR_T
276AC_TYPE_SSIZE_T
277
278# Given the above check, we always have uintptr_t or a fallback
279# definition.  So define HAVE_UINTPTR_T in case any imported code
280# relies on it.
281AC_DEFINE(HAVE_UINTPTR_T, 1, [Define if you have the \`uintptr_t' type.])
282
283AC_TYPE_PID_T
284
285# This is the list of functions which libiberty will provide if they
286# are not available on the host.
287
288funcs="asprintf"
289funcs="$funcs atexit"
290funcs="$funcs basename"
291funcs="$funcs bcmp"
292funcs="$funcs bcopy"
293funcs="$funcs bsearch"
294funcs="$funcs bzero"
295funcs="$funcs calloc"
296funcs="$funcs clock"
297funcs="$funcs ffs"
298funcs="$funcs getcwd"
299funcs="$funcs getpagesize"
300funcs="$funcs gettimeofday"
301funcs="$funcs index"
302funcs="$funcs insque"
303funcs="$funcs memchr"
304funcs="$funcs memcmp"
305funcs="$funcs memcpy"
306funcs="$funcs memmem"
307funcs="$funcs memmove"
308funcs="$funcs mempcpy"
309funcs="$funcs memset"
310funcs="$funcs mkstemps"
311funcs="$funcs putenv"
312funcs="$funcs random"
313funcs="$funcs rename"
314funcs="$funcs rindex"
315funcs="$funcs setenv"
316funcs="$funcs snprintf"
317funcs="$funcs sigsetmask"
318funcs="$funcs stpcpy"
319funcs="$funcs stpncpy"
320funcs="$funcs strcasecmp"
321funcs="$funcs strchr"
322funcs="$funcs strdup"
323funcs="$funcs strncasecmp"
324funcs="$funcs strndup"
325funcs="$funcs strrchr"
326funcs="$funcs strstr"
327funcs="$funcs strtod"
328funcs="$funcs strtol"
329funcs="$funcs strtoul"
330funcs="$funcs strverscmp"
331funcs="$funcs tmpnam"
332funcs="$funcs vasprintf"
333funcs="$funcs vfprintf"
334funcs="$funcs vprintf"
335funcs="$funcs vsnprintf"
336funcs="$funcs vsprintf"
337funcs="$funcs waitpid"
338funcs="$funcs setproctitle"
339
340# Also in the old function.def file: alloca, vfork, getopt.
341
342vars="sys_errlist sys_nerr sys_siglist"
343
344checkfuncs="__fsetlocking canonicalize_file_name dup3 getrlimit getrusage \
345 getsysinfo gettimeofday on_exit psignal pstat_getdynamic pstat_getstatic \
346 realpath setrlimit sbrk spawnve spawnvpe strerror strsignal sysconf sysctl \
347 sysmp table times wait3 wait4"
348
349# These are neither executed nor required, but they help keep
350# autoheader happy without adding a bunch of text to acconfig.h.
351if test "x" = "y"; then
352  AC_CHECK_FUNCS(asprintf atexit \
353    basename bcmp bcopy bsearch bzero \
354    calloc canonicalize_file_name clock \
355    dup3 \
356    ffs __fsetlocking \
357    getcwd getpagesize getrlimit getrusage getsysinfo gettimeofday \
358    index insque \
359    memchr memcmp memcpy memmem memmove memset mkstemps \
360    on_exit \
361    psignal pstat_getdynamic pstat_getstatic putenv \
362    random realpath rename rindex \
363    sbrk setenv setproctitle setrlimit sigsetmask snprintf spawnve spawnvpe \
364     stpcpy stpncpy strcasecmp strchr strdup \
365     strerror strncasecmp strndup strrchr strsignal strstr strtod strtol \
366     strtoul strverscmp sysconf sysctl sysmp \
367    table times tmpnam \
368    vasprintf vfprintf vprintf vsprintf \
369    wait3 wait4 waitpid)
370  AC_CHECK_DECLS([basename(char *), ffs, asprintf, vasprintf, snprintf, vsnprintf])
371  AC_DEFINE(HAVE_SYS_ERRLIST, 1, [Define if you have the sys_errlist variable.])
372  AC_DEFINE(HAVE_SYS_NERR,    1, [Define if you have the sys_nerr variable.])
373  AC_DEFINE(HAVE_SYS_SIGLIST, 1, [Define if you have the sys_siglist variable.])
374fi
375
376# For each of these functions, if the host does not provide the
377# function we want to put FN.o in LIBOBJS, and if the host does
378# provide the function, we want to define HAVE_FN in config.h.
379
380setobjs=
381CHECK=
382target_header_dir=
383if test -n "${with_target_subdir}"; then
384
385  # We are being configured as a target library.  AC_REPLACE_FUNCS
386  # may not work correctly, because the compiler may not be able to
387  # link executables.  Note that we may still be being configured
388  # native.
389
390  # If we are being configured for newlib, we know which functions
391  # newlib provide and which ones we will be expected to provide.
392
393  if test "x${with_newlib}" = "xyes"; then
394    AC_LIBOBJ([asprintf])
395    AC_LIBOBJ([basename])
396    AC_LIBOBJ([insque])
397    AC_LIBOBJ([random])
398    AC_LIBOBJ([strdup])
399    AC_LIBOBJ([vasprintf])
400
401    for f in $funcs; do
402      case "$f" in
403	asprintf | basename | insque | random | strdup | vasprintf)
404	  ;;
405	*)
406	  n=HAVE_`echo $f | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
407	  AC_DEFINE_UNQUOTED($n)
408	  ;;
409      esac
410    done
411
412    # newlib doesnt provide any of the variables in $vars, so we
413    # dont have to check them here.
414
415    # Of the functions in $checkfuncs, newlib only has strerror.
416    AC_DEFINE(HAVE_STRERROR)
417
418    setobjs=yes
419
420  fi
421
422  # If we are being configured for Mingw, we know which functions
423  # Mingw provides and which ones we will be expected to provide.
424
425  case "${host}" in
426  *-*-mingw*)
427    AC_LIBOBJ([asprintf])
428    AC_LIBOBJ([basename])
429    AC_LIBOBJ([bcmp])
430    AC_LIBOBJ([bcopy])
431    AC_LIBOBJ([bzero])
432    AC_LIBOBJ([clock])
433    AC_LIBOBJ([ffs])
434    AC_LIBOBJ([getpagesize])
435    AC_LIBOBJ([index])
436    AC_LIBOBJ([insque])
437    AC_LIBOBJ([mempcpy])
438    AC_LIBOBJ([mkstemps])
439    AC_LIBOBJ([random])
440    AC_LIBOBJ([rindex])
441    AC_LIBOBJ([sigsetmask])
442    AC_LIBOBJ([stpcpy])
443    AC_LIBOBJ([stpncpy])
444    AC_LIBOBJ([strndup])
445    AC_LIBOBJ([strverscmp])
446    AC_LIBOBJ([vasprintf])
447    AC_LIBOBJ([waitpid])
448
449    for f in $funcs; do
450      case "$f" in
451	asprintf | basename | bcmp | bcopy | bzero | clock | ffs | getpagesize | index | insque | mempcpy | mkstemps | random | rindex | sigsetmask | stpcpy | stpncpy | strdup | strndup | strverscmp | vasprintf | waitpid)
452	  ;;
453	*)
454	  n=HAVE_`echo $f | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
455	  AC_DEFINE_UNQUOTED($n)
456	  ;;
457      esac
458    done
459
460    # Mingw doesnt provide any of the variables in $vars, so we
461    # dont have to check them here.
462
463    # Of the functions in $checkfuncs, Mingw only has strerror.
464    AC_DEFINE(HAVE_STRERROR)
465
466    setobjs=yes
467    ;;
468
469  *-*-msdosdjgpp)
470    AC_LIBOBJ([vasprintf])
471    AC_LIBOBJ([vsnprintf])
472    AC_LIBOBJ([snprintf])
473    AC_LIBOBJ([asprintf])
474
475    for f in atexit basename bcmp bcopy bsearch bzero calloc clock ffs \
476             getcwd getpagesize getrusage gettimeofday \
477             index insque memchr memcmp memcpy memmove memset psignal \
478             putenv random rename rindex sbrk setenv stpcpy strcasecmp \
479             strchr strdup strerror strncasecmp strrchr strstr strtod \
480             strtol strtoul sysconf times tmpnam vfprintf vprintf \
481             vsprintf waitpid
482    do
483      n=HAVE_`echo $f | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
484      AC_DEFINE_UNQUOTED($n)
485    done
486
487
488    setobjs=yes
489    ;;
490
491  esac
492
493  # We may wish to install the target headers somewhere.
494  AC_ARG_ENABLE(install-libiberty,
495  [  --enable-install-libiberty       Install headers for end users],
496  enable_install_libiberty=$enableval,
497  enable_install_libiberty=no)dnl
498  
499  # Option parsed, now set things appropriately.
500  case x"$enable_install_libiberty" in
501    xyes|x)
502      target_header_dir=libiberty
503      ;;
504    xno)   
505      target_header_dir=
506      ;;
507    *) 
508      # This could be sanity-checked in various ways...
509      target_header_dir="${enable_install_libiberty}"
510      ;;
511  esac
512
513
514else
515
516   # Not a target library, so we set things up to run the test suite.
517   CHECK=really-check
518
519fi
520
521AC_SUBST(CHECK)
522AC_SUBST(target_header_dir)
523
524case "${host}" in
525  *-*-cygwin* | *-*-mingw*)
526    AC_DEFINE(HAVE_SYS_ERRLIST)
527    AC_DEFINE(HAVE_SYS_NERR)
528    ;;
529esac
530
531if test -z "${setobjs}"; then
532  case "${host}" in
533
534  *-*-vxworks*)
535    # Handle VxWorks configuration specially, since on VxWorks the
536    # libraries are actually on the target board, not in the file
537    # system.
538    AC_LIBOBJ([basename])
539    AC_LIBOBJ([getpagesize])
540    AC_LIBOBJ([insque])
541    AC_LIBOBJ([random])
542    AC_LIBOBJ([strcasecmp])
543    AC_LIBOBJ([strncasecmp])
544    AC_LIBOBJ([strdup])
545    AC_LIBOBJ([vfork])
546    AC_LIBOBJ([waitpid])
547    AC_LIBOBJ([vasprintf])
548    for f in $funcs; do
549      case "$f" in
550	basename | getpagesize | insque | random | strcasecmp)
551	  ;;
552	strncasecmp | strdup | vfork | waitpid | vasprintf)
553	  ;;
554	*)
555	  n=HAVE_`echo $f | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
556	  AC_DEFINE_UNQUOTED($n)
557	  ;;
558      esac
559    done
560
561    # VxWorks doesn't provide any of the variables in $vars, so we
562    # don't have to check them here.
563
564    # Of the functions in $checkfuncs, VxWorks only has strerror.
565    AC_DEFINE(HAVE_STRERROR)
566
567    setobjs=yes
568    ;;
569
570  esac
571fi
572
573if test -z "${setobjs}"; then
574
575  case "${host}" in
576
577  *-*-mingw32*)
578    # Under mingw32, sys_nerr and sys_errlist exist, but they are
579    # macros, so the test below won't find them.
580    libiberty_cv_var_sys_nerr=yes
581    libiberty_cv_var_sys_errlist=yes
582    ;;
583
584  *-*-msdosdjgpp*)
585    # vfork and fork are stubs.
586    ac_cv_func_vfork_works=no
587    ;;
588
589  *-*-uwin*)
590    # Under some versions of uwin, vfork is notoriously buggy and the test 
591    # can hang configure; on other versions, vfork exists just as a stub.
592    # FIXME: This should be removed once vfork in uwin's runtime is fixed.
593    ac_cv_func_vfork_works=no
594    # Under uwin 2.0+, sys_nerr and sys_errlist exist, but they are
595    # macros (actually, these are imported from a DLL, but the end effect 
596    # is the same), so the test below won't find them.
597    libiberty_cv_var_sys_nerr=yes
598    libiberty_cv_var_sys_errlist=yes
599    ;;
600
601  *-*-*vms*)
602    # Under VMS, vfork works very different than on Unix. The standard test 
603    # won't work, and it isn't easily adaptable. It makes more sense to
604    # just force it.
605    ac_cv_func_vfork_works=yes
606    ;;
607
608  esac
609
610  # We haven't set the list of objects yet.  Use the standard autoconf
611  # tests.  This will only work if the compiler works.
612  AC_ISC_POSIX
613  AC_REPLACE_FUNCS($funcs)
614  libiberty_AC_FUNC_C_ALLOCA
615  AC_FUNC_FORK
616  if test $ac_cv_func_vfork_works = no; then
617    AC_LIBOBJ([vfork])
618  fi
619  # We only need _doprnt if we might use it to implement v*printf.
620  if test $ac_cv_func_vprintf != yes \
621     || test $ac_cv_func_vfprintf != yes \
622     || test $ac_cv_func_vsprintf != yes; then
623    AC_REPLACE_FUNCS(_doprnt)
624  else
625    AC_CHECK_FUNCS(_doprnt)
626  fi
627
628  for v in $vars; do
629    AC_MSG_CHECKING([for $v])
630    AC_CACHE_VAL(libiberty_cv_var_$v,
631      [AC_LINK_IFELSE([AC_LANG_PROGRAM([[int *p;]],[[extern int $v []; p = $v;]])],
632		      [eval "libiberty_cv_var_$v=yes"],
633		      [eval "libiberty_cv_var_$v=no"])])
634    if eval "test \"`echo '$libiberty_cv_var_'$v`\" = yes"; then
635      AC_MSG_RESULT(yes)
636      n=HAVE_`echo $v | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
637      AC_DEFINE_UNQUOTED($n)
638    else
639      AC_MSG_RESULT(no)
640    fi
641  done
642
643  # special check for _system_configuration because AIX <4.3.2 do not
644  # contain the `physmem' member.
645  AC_MSG_CHECKING([for external symbol _system_configuration])
646  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/systemcfg.h>]],
647			[[double x = _system_configuration.physmem;]])],
648    [AC_MSG_RESULT([yes])
649    AC_DEFINE(HAVE__SYSTEM_CONFIGURATION, 1,
650	      [Define if you have the _system_configuration variable.])],
651    [AC_MSG_RESULT([no])])
652
653  AC_CHECK_FUNCS($checkfuncs)
654  AC_CHECK_DECLS([basename(char *), ffs, asprintf, vasprintf, snprintf, vsnprintf])
655  AC_CHECK_DECLS([calloc, getenv, getopt, malloc, realloc, sbrk])
656  AC_CHECK_DECLS([strverscmp])
657  libiberty_NEED_DECLARATION(canonicalize_file_name)
658fi
659
660# Figure out which version of pexecute to use.
661case "${host}" in
662     *-*-mingw* | *-*-winnt*)	pexecute=pex-win32  ;;
663     *-*-msdosdjgpp*)		pexecute=pex-djgpp  ;;
664     *-*-msdos*)		pexecute=pex-msdos  ;;
665     *)				pexecute=pex-unix   ;;
666esac
667AC_SUBST(pexecute)
668
669libiberty_AC_FUNC_STRNCMP
670
671# Install a library built with a cross compiler in $(tooldir) rather
672# than $(libdir).
673if test -z "${with_cross_host}"; then
674  INSTALL_DEST=libdir
675else
676  INSTALL_DEST=tooldir
677fi
678AC_SUBST(INSTALL_DEST)
679
680m4_pattern_allow(LIBOBJS)
681L=""
682for l in x $LIBOBJS; do
683  case $l in
684    x) ;;
685    *) L="$L ./$l" ;;
686  esac
687done
688LIBOBJS="$L"
689
690dnl Required by html and install-html
691AC_SUBST(datarootdir)
692AC_SUBST(docdir)
693AC_SUBST(htmldir)
694
695# We need multilib support, but only if configuring for the target.
696AC_CONFIG_FILES([Makefile testsuite/Makefile])
697AC_CONFIG_COMMANDS([default],
698  [[test -z "$CONFIG_HEADERS" || echo timestamp > stamp-h
699if test -n "$CONFIG_FILES"; then
700  if test -n "${with_target_subdir}"; then
701    # FIXME: We shouldn't need to set ac_file
702    ac_file=Makefile
703    LD="${ORIGINAL_LD_FOR_MULTILIBS}"
704    . ${libiberty_topdir}/config-ml.in
705  fi
706fi]],
707[[srcdir=${srcdir}
708host=${host}
709target=${target}
710with_target_subdir=${with_target_subdir}
711with_multisubdir=${with_multisubdir}
712ac_configure_args="--enable-multilib ${ac_configure_args}"
713CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
714ORIGINAL_LD_FOR_MULTILIBS="${ORIGINAL_LD_FOR_MULTILIBS}"
715libiberty_topdir=${libiberty_topdir}
716]])
717AC_OUTPUT
718