1dnl Process this file with autoconf to produce a configure script
2
3AC_PREREQ(2.59)
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
112GCC_NO_EXECUTABLES
113AC_PROG_CC
114AC_PROG_CPP_WERROR
115
116# Warn C++ incompatibilities if supported.
117AC_CACHE_CHECK(
118  [whether ${CC} accepts -Wc++-compat],
119  [ac_cv_prog_cc_w_cxx_compat],
120  [save_CFLAGS="$CFLAGS"
121  CFLAGS="-Wc++-compat"
122  AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
123                    [ac_cv_prog_cc_w_cxx_compat=yes],
124                    [ac_cv_prog_cc_w_cxx_compat=no])
125  CFLAGS="$save_CFLAGS"
126  ])
127
128
129if test x$GCC = xyes; then
130  ac_libiberty_warn_cflags='-W -Wall -pedantic -Wwrite-strings -Wstrict-prototypes'
131fi
132if test $ac_cv_prog_cc_w_cxx_compat = yes ; then
133  ac_libiberty_warn_cflags="${ac_libiberty_warn_cflags} -Wc++-compat"
134fi
135AC_SUBST(ac_libiberty_warn_cflags)
136
137AC_PROG_CC_C_O
138# autoconf is lame and doesn't give us any substitution variable for this.
139if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
140  NO_MINUS_C_MINUS_O=yes
141else
142  OUTPUT_OPTION='-o $@'
143fi
144AC_SUBST(NO_MINUS_C_MINUS_O)
145AC_SUBST(OUTPUT_OPTION)
146
147AC_C_CONST
148AC_C_INLINE
149AC_C_BIGENDIAN
150
151dnl When we start using libtool:
152dnl Default to a non shared library.  This may be overridden by the
153dnl configure option --enable-shared.
154dnl AM_DISABLE_SHARED
155
156dnl When we start using libtool:
157dnl AM_PROG_LIBTOOL
158
159dnl When we start using automake:
160dnl AM_CONFIG_HEADER(config.h:config.in)
161AC_CONFIG_HEADER(config.h:config.in)
162
163dnl When we start using automake:
164dnl AM_MAINTAINER_MODE
165dnl AC_EXEEXT
166
167dnl When we start using automake:
168dnl AM_PROG_INSTALL
169AC_PROG_INSTALL
170
171# Don't build the shared library for build.
172if [[ -n "${with_build_subdir}" ]]; then
173  enable_shared=no
174fi
175
176frag=
177case "${host}" in
178  rs6000-ibm-aix3.1 | rs6000-ibm-aix)
179                        frag=mh-aix ;;
180  *-*-cxux7*)		frag=mh-cxux7 ;;
181  *-*-freebsd2.1.*)	frag=mh-fbsd21 ;;
182  *-*-freebsd2.2.[[012]])	frag=mh-fbsd21 ;;
183  i370-*-opened*)       frag=mh-openedition ;;
184  i[[34567]]86-*-windows*)	frag=mh-windows ;;
185esac
186
187if [[ -n "${frag}" ]]; then
188  frags=${libiberty_topdir}/libiberty/config/$frag
189else
190  frags=
191fi
192
193# If they didn't specify --enable-shared, don't generate shared libs.
194case "${enable_shared}" in
195  yes) shared=yes ;;
196  no) shared=no ;;
197  "") shared=no ;;
198  *) shared=yes ;;
199esac
200if [[ "${shared}" = "yes" ]]; then
201  frag=
202  case "${host}" in
203    *-*-cygwin*)	;;
204    alpha*-*-linux*)	frag=mh-elfalphapic ;;
205    arm*-*-*)		frag=mh-armpic ;;
206    hppa*-*-*)		frag=mh-papic ;;
207    i[[34567]]86-*-* | x86_64-*-*)
208			frag=mh-x86pic ;;
209    powerpc*-*-aix*)	;;
210    powerpc*-*-*)	frag=mh-ppcpic ;;
211    sparc*-*-*)		frag=mh-sparcpic ;;
212    s390*-*-*)		frag=mh-s390pic ;;
213    *)			frag=mh-${host_cpu}pic ;;
214  esac
215  if [[ -n "${frag}" ]]; then
216    frags="${frags} ${libiberty_topdir}/config/${frag}"
217  fi
218fi
219
220echo "# Warning: this fragment is automatically generated" > temp-frag
221
222for frag in ${frags}; do
223  if [[ -f ${frag} ]]; then
224    echo "Appending ${frag} to xhost-mkfrag"
225    echo "# Following fragment copied from ${frag}" >> temp-frag
226    cat ${frag} >> temp-frag
227  fi
228done
229
230# record if we want to build shared libs.
231if [[ "${shared}" = "yes" ]]; then
232  echo enable_shared = yes >> temp-frag
233else
234  echo enable_shared = no >> temp-frag
235fi
236
237frag=xhost-mkfrag
238${CONFIG_SHELL-/bin/sh} ${libiberty_topdir}/move-if-change temp-frag xhost-mkfrag
239
240host_makefile_frag=${frag}
241AC_SUBST_FILE(host_makefile_frag)
242
243# It's OK to check for header files.  Although the compiler may not be
244# able to link anything, it had better be able to at least compile
245# something.
246AC_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)
247AC_HEADER_SYS_WAIT
248AC_HEADER_TIME
249
250libiberty_AC_DECLARE_ERRNO
251
252# Determine the size of an int for struct fibnode.
253AC_CHECK_SIZEOF([int])
254
255AC_CHECK_TYPE(uintptr_t, unsigned long)
256
257# Look for a 64-bit type.
258AC_MSG_CHECKING([for a 64-bit type])
259AC_CACHE_VAL(liberty_cv_uint64,
260[AC_TRY_COMPILE(
261[#ifdef HAVE_STDINT_H
262#include <stdint.h>
263#endif],
264[extern uint64_t foo;],
265liberty_cv_uint64=uint64_t,
266[AC_TRY_COMPILE(
267[#ifdef HAVE_LIMITS_H
268#include <limits.h>
269#endif
270#ifndef CHAR_BIT
271#define CHAR_BIT 8
272#endif],
273[extern char foo[sizeof(long) * CHAR_BIT >= 64 ? 1 : -1];],
274liberty_cv_uint64="unsigned long",
275[AC_TRY_COMPILE(
276[#ifdef HAVE_LIMITS_H
277#include <limits.h>
278#endif
279#ifndef CHAR_BIT
280#define CHAR_BIT 8
281#endif],
282[extern char foo[sizeof(long long) * CHAR_BIT >= 64 ? 1 : -1];],
283liberty_cv_uint64="unsigned long long", liberty_cv_uint64=none)])])])
284AC_MSG_RESULT($liberty_cv_uint64)
285if test "$liberty_cv_uint64" != none; then
286  AC_DEFINE_UNQUOTED(UNSIGNED_64BIT_TYPE, $liberty_cv_uint64,
287                     [Define to an unsigned 64-bit type available in the compiler.])
288fi
289
290# Given the above check, we always have uintptr_t or a fallback
291# definition.  So define HAVE_UINTPTR_T in case any imported code
292# relies on it.
293AC_DEFINE(HAVE_UINTPTR_T, 1, [Define if you have the \`uintptr_t' type.])
294
295AC_TYPE_PID_T
296
297# This is the list of functions which libiberty will provide if they
298# are not available on the host.
299
300funcs="asprintf"
301funcs="$funcs atexit"
302funcs="$funcs basename"
303funcs="$funcs bcmp"
304funcs="$funcs bcopy"
305funcs="$funcs bsearch"
306funcs="$funcs bzero"
307funcs="$funcs calloc"
308funcs="$funcs clock"
309funcs="$funcs ffs"
310funcs="$funcs getcwd"
311funcs="$funcs getpagesize"
312funcs="$funcs gettimeofday"
313funcs="$funcs index"
314funcs="$funcs insque"
315funcs="$funcs memchr"
316funcs="$funcs memcmp"
317funcs="$funcs memcpy"
318funcs="$funcs memmove"
319funcs="$funcs mempcpy"
320funcs="$funcs memset"
321funcs="$funcs mkstemps"
322funcs="$funcs putenv"
323funcs="$funcs random"
324funcs="$funcs rename"
325funcs="$funcs rindex"
326funcs="$funcs setenv"
327funcs="$funcs snprintf"
328funcs="$funcs sigsetmask"
329funcs="$funcs stpcpy"
330funcs="$funcs stpncpy"
331funcs="$funcs strcasecmp"
332funcs="$funcs strchr"
333funcs="$funcs strdup"
334funcs="$funcs strncasecmp"
335funcs="$funcs strndup"
336funcs="$funcs strrchr"
337funcs="$funcs strstr"
338funcs="$funcs strtod"
339funcs="$funcs strtol"
340funcs="$funcs strtoul"
341funcs="$funcs strverscmp"
342funcs="$funcs tmpnam"
343funcs="$funcs vasprintf"
344funcs="$funcs vfprintf"
345funcs="$funcs vprintf"
346funcs="$funcs vsnprintf"
347funcs="$funcs vsprintf"
348funcs="$funcs waitpid"
349
350# Also in the old function.def file: alloca, vfork, getopt.
351
352vars="sys_errlist sys_nerr sys_siglist"
353
354checkfuncs="getrusage on_exit psignal strerror strsignal sysconf times sbrk gettimeofday"
355checkfuncs="$checkfuncs realpath canonicalize_file_name pstat_getstatic pstat_getdynamic sysmp"
356checkfuncs="$checkfuncs getsysinfo table sysctl wait3 wait4 __fsetlocking"
357
358# These are neither executed nor required, but they help keep
359# autoheader happy without adding a bunch of text to acconfig.h.
360if test "x" = "y"; then
361  AC_CHECK_FUNCS(asprintf atexit basename bcmp bcopy bsearch bzero calloc clock \
362  getcwd getpagesize gettimeofday index insque mkstemps memchr memcmp memcpy \
363  memmove mempcpy memset putenv random rename rindex sigsetmask \
364  strcasecmp setenv stpcpy stpncpy strchr strdup strncasecmp strndup strrchr strstr \
365  strtod strtol strtoul strverscmp tmpnam vasprintf vfprintf vprintf \
366  vsprintf waitpid getrusage on_exit psignal strerror strsignal \
367  sysconf times sbrk gettimeofday ffs snprintf vsnprintf \
368  pstat_getstatic pstat_getdynamic sysmp getsysinfo table sysctl wait3 wait4 \
369  realpath canonicalize_file_name __fsetlocking)
370  AC_CHECK_DECLS([basename, ffs, asprintf, vasprintf, snprintf, vsnprintf])
371  AC_DEFINE(HAVE_SYS_ERRLIST, 1, [Define if you have the sys_errlist variable.])
372  AC_DEFINE(HAVE_SYS_NERR,    1, [Define if you have the sys_nerr variable.])
373  AC_DEFINE(HAVE_SYS_SIGLIST, 1, [Define if you have the sys_siglist variable.])
374fi
375
376# For each of these functions, if the host does not provide the
377# function we want to put FN.o in LIBOBJS, and if the host does
378# provide the function, we want to define HAVE_FN in config.h.
379
380setobjs=
381CHECK=
382target_header_dir=
383if test -n "${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 $checkfuncs, Mingw only has strerror.
464    AC_DEFINE(HAVE_STRERROR)
465
466    setobjs=yes
467    ;;
468
469  esac
470
471  # We may wish to install the target headers somewhere.
472  AC_ARG_ENABLE(install-libiberty,
473  [  --enable-install-libiberty       Install headers for end users],
474  enable_install_libiberty=$enableval,
475  enable_install_libiberty=no)dnl
476  
477  # Option parsed, now set things appropriately.
478  case x"$enable_install_libiberty" in
479    xyes|x)
480      target_header_dir=libiberty
481      ;;
482    xno)   
483      target_header_dir=
484      ;;
485    *) 
486      # This could be sanity-checked in various ways...
487      target_header_dir="${enable_install_libiberty}"
488      ;;
489  esac
490
491
492else
493
494   # Not a target library, so we set things up to run the test suite.
495   CHECK=really-check
496
497fi
498
499AC_SUBST(CHECK)
500AC_SUBST(target_header_dir)
501
502case "${host}" in
503  *-*-cygwin* | *-*-mingw*)
504    AC_DEFINE(HAVE_SYS_ERRLIST)
505    AC_DEFINE(HAVE_SYS_NERR)
506    ;;
507esac
508
509if test -z "${setobjs}"; then
510  case "${host}" in
511
512  *-*-vxworks*)
513    # Handle VxWorks configuration specially, since on VxWorks the
514    # libraries are actually on the target board, not in the file
515    # system.
516    AC_LIBOBJ([basename])
517    AC_LIBOBJ([getpagesize])
518    AC_LIBOBJ([insque])
519    AC_LIBOBJ([random])
520    AC_LIBOBJ([strcasecmp])
521    AC_LIBOBJ([strncasecmp])
522    AC_LIBOBJ([strdup])
523    AC_LIBOBJ([vfork])
524    AC_LIBOBJ([waitpid])
525    AC_LIBOBJ([vasprintf])
526    for f in $funcs; do
527      case "$f" in
528	basename | getpagesize | insque | random | strcasecmp)
529	  ;;
530	strncasecmp | strdup | vfork | waitpid | vasprintf)
531	  ;;
532	*)
533	  n=HAVE_`echo $f | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
534	  AC_DEFINE_UNQUOTED($n)
535	  ;;
536      esac
537    done
538
539    # VxWorks doesn't provide any of the variables in $vars, so we
540    # don't have to check them here.
541
542    # Of the functions in $checkfuncs, VxWorks only has strerror.
543    AC_DEFINE(HAVE_STRERROR)
544
545    setobjs=yes
546    ;;
547
548  esac
549fi
550
551if test -z "${setobjs}"; then
552
553  case "${host}" in
554
555  *-*-cygwin*)
556    # The Cygwin library actually uses a couple of files from
557    # libiberty when it is built.  If we are building a native
558    # Cygwin, and we run the tests, we will appear to have these
559    # files.  However, when we go on to build winsup, we will wind up
560    # with a library which does not have the files, since they should
561    # have come from libiberty.
562
563    # We handle this by removing the functions the winsup library
564    # provides from our shell variables, so that they appear to be
565    # missing.
566
567    # DJ - only if we're *building* cygwin, not just building *with* cygwin
568  
569    if test -n "${with_target_subdir}"
570    then
571      funcs="`echo $funcs | sed -e 's/random//'`"
572      AC_LIBOBJ([random])
573      vars="`echo $vars | sed -e 's/sys_siglist//'`"
574      checkfuncs="`echo $checkfuncs | sed -e 's/strsignal//' -e 's/psignal//'`"
575    fi
576    ;;
577
578  *-*-mingw32*)
579    # Under mingw32, sys_nerr and sys_errlist exist, but they are
580    # macros, so the test below won't find them.
581    libiberty_cv_var_sys_nerr=yes
582    libiberty_cv_var_sys_errlist=yes
583    ;;
584
585  *-*-msdosdjgpp*)
586    # vfork and fork are stubs.
587    ac_cv_func_vfork_works=no
588    ;;
589
590  *-*-uwin*)
591    # Under some versions of uwin, vfork is notoriously buggy and the test 
592    # can hang configure; on other versions, vfork exists just as a stub.
593    # FIXME: This should be removed once vfork in uwin's runtime is fixed.
594    ac_cv_func_vfork_works=no
595    # Under uwin 2.0+, sys_nerr and sys_errlist exist, but they are
596    # macros (actually, these are imported from a DLL, but the end effect 
597    # is the same), so the test below won't find them.
598    libiberty_cv_var_sys_nerr=yes
599    libiberty_cv_var_sys_errlist=yes
600    ;;
601
602  *-*-*vms*)
603    # Under VMS, vfork works very different than on Unix. The standard test 
604    # won't work, and it isn't easily adaptable. It makes more sense to
605    # just force it.
606    ac_cv_func_vfork_works=yes
607    ;;
608
609  esac
610
611  # We haven't set the list of objects yet.  Use the standard autoconf
612  # tests.  This will only work if the compiler works.
613  AC_ISC_POSIX
614  AC_REPLACE_FUNCS($funcs)
615  libiberty_AC_FUNC_C_ALLOCA
616  AC_FUNC_FORK
617  if test $ac_cv_func_vfork_works = no; then
618    AC_LIBOBJ([vfork])
619  fi
620  # We only need _doprnt if we might use it to implement v*printf.
621  if test $ac_cv_func_vprintf != yes \
622     || test $ac_cv_func_vfprintf != yes \
623     || test $ac_cv_func_vsprintf != yes; then
624    AC_REPLACE_FUNCS(_doprnt)
625  else
626    AC_CHECK_FUNCS(_doprnt)
627  fi
628
629  for v in $vars; do
630    AC_MSG_CHECKING([for $v])
631    AC_CACHE_VAL(libiberty_cv_var_$v,
632      [AC_LINK_IFELSE([AC_LANG_PROGRAM([[int *p;]],[[extern int $v []; p = $v;]])],
633		      [eval "libiberty_cv_var_$v=yes"],
634		      [eval "libiberty_cv_var_$v=no"])])
635    if eval "test \"`echo '$libiberty_cv_var_'$v`\" = yes"; then
636      AC_MSG_RESULT(yes)
637      n=HAVE_`echo $v | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
638      AC_DEFINE_UNQUOTED($n)
639    else
640      AC_MSG_RESULT(no)
641    fi
642  done
643
644  # special check for _system_configuration because AIX <4.3.2 do not
645  # contain the `physmem' member.
646  AC_MSG_CHECKING([for external symbol _system_configuration])
647  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/systemcfg.h>]],
648			[[double x = _system_configuration.physmem;]])],
649    [AC_MSG_RESULT([yes])
650    AC_DEFINE(HAVE__SYSTEM_CONFIGURATION, 1,
651	      [Define if you have the _system_configuration variable.])],
652    [AC_MSG_RESULT([no])])
653
654  AC_CHECK_FUNCS($checkfuncs)
655  AC_CHECK_DECLS([basename, ffs, asprintf, vasprintf, snprintf, vsnprintf])
656  AC_CHECK_DECLS([calloc, getenv, getopt, malloc, realloc, sbrk])
657  AC_CHECK_DECLS([strverscmp])
658  libiberty_NEED_DECLARATION(canonicalize_file_name)
659fi
660
661# Figure out which version of pexecute to use.
662case "${host}" in
663     *-*-mingw* | *-*-winnt*)	pexecute=./pex-win32.o  ;;
664     *-*-msdosdjgpp*)		pexecute=./pex-djgpp.o  ;;
665     *-*-msdos*)		pexecute=./pex-msdos.o  ;;
666     *)				pexecute=./pex-unix.o   ;;
667esac
668AC_SUBST(pexecute)
669
670libiberty_AC_FUNC_STRNCMP
671
672# Install a library built with a cross compiler in $(tooldir) rather
673# than $(libdir).
674if test -z "${with_cross_host}"; then
675  INSTALL_DEST=libdir
676else
677  INSTALL_DEST=tooldir
678fi
679AC_SUBST(INSTALL_DEST)
680
681m4_pattern_allow(LIBOBJS)
682L=""
683for l in x $LIBOBJS; do
684  case $l in
685    x) ;;
686    *) L="$L ./$l" ;;
687  esac
688done
689LIBOBJS="$L"
690
691dnl Required by html and install-html
692AC_SUBST(datarootdir)
693AC_SUBST(docdir)
694AC_SUBST(htmldir)
695
696# We need multilib support, but only if configuring for the target.
697AC_CONFIG_FILES([Makefile testsuite/Makefile])
698AC_CONFIG_COMMANDS([default],
699  [[test -z "$CONFIG_HEADERS" || echo timestamp > stamp-h
700if test -n "$CONFIG_FILES"; then
701  if test -n "${with_target_subdir}"; then
702    # FIXME: We shouldn't need to set ac_file
703    ac_file=Makefile
704    LD="${ORIGINAL_LD_FOR_MULTILIBS}"
705    . ${libiberty_topdir}/config-ml.in
706  fi
707fi]],
708[[srcdir=${srcdir}
709host=${host}
710target=${target}
711with_target_subdir=${with_target_subdir}
712with_multisubdir=${with_multisubdir}
713ac_configure_args="--enable-multilib ${ac_configure_args}"
714CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
715ORIGINAL_LD_FOR_MULTILIBS="${ORIGINAL_LD_FOR_MULTILIBS}"
716libiberty_topdir=${libiberty_topdir}
717]])
718AC_OUTPUT
719