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
116if test x$GCC = xyes; then
117  ac_libiberty_warn_cflags='-W -Wall -Wtraditional -pedantic'
118fi
119AC_SUBST(ac_libiberty_warn_cflags)
120
121AC_PROG_CC_C_O
122# autoconf is lame and doesn't give us any substitution variable for this.
123if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
124  NO_MINUS_C_MINUS_O=yes
125else
126  OUTPUT_OPTION='-o $@'
127fi
128AC_SUBST(NO_MINUS_C_MINUS_O)
129AC_SUBST(OUTPUT_OPTION)
130
131AC_C_CONST
132AC_C_INLINE
133AC_C_BIGENDIAN_CROSS
134
135dnl When we start using libtool:
136dnl Default to a non shared library.  This may be overridden by the
137dnl configure option --enable-shared.
138dnl AM_DISABLE_SHARED
139
140dnl When we start using libtool:
141dnl AM_PROG_LIBTOOL
142
143dnl When we start using automake:
144dnl AM_CONFIG_HEADER(config.h:config.in)
145AC_CONFIG_HEADER(config.h:config.in)
146
147dnl When we start using automake:
148dnl AM_MAINTAINER_MODE
149dnl AC_EXEEXT
150
151dnl When we start using automake:
152dnl AM_PROG_INSTALL
153AC_PROG_INSTALL
154
155. ${srcdir}/config.table
156host_makefile_frag=${frag}
157AC_SUBST_FILE(host_makefile_frag)
158
159# It's OK to check for header files.  Although the compiler may not be
160# able to link anything, it had better be able to at least compile
161# something.
162AC_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)
163AC_HEADER_SYS_WAIT
164AC_HEADER_TIME
165
166libiberty_AC_DECLARE_ERRNO
167
168AC_CHECK_TYPE(uintptr_t, unsigned long)
169
170# Look for a 64-bit type.
171AC_MSG_CHECKING([for a 64-bit type])
172AC_CACHE_VAL(liberty_cv_uint64,
173[AC_TRY_COMPILE(
174[#ifdef HAVE_STDINT_H
175#include <stdint.h>
176#endif],
177[extern uint64_t foo;],
178liberty_cv_uint64=uint64_t,
179[AC_TRY_COMPILE(
180[#ifdef HAVE_LIMITS_H
181#include <limits.h>
182#endif
183#ifndef CHAR_BIT
184#define CHAR_BIT 8
185#endif],
186[extern char foo[sizeof(long) * CHAR_BIT >= 64 ? 1 : -1];],
187liberty_cv_uint64="unsigned long",
188[AC_TRY_COMPILE(
189[#ifdef HAVE_LIMITS_H
190#include <limits.h>
191#endif
192#ifndef CHAR_BIT
193#define CHAR_BIT 8
194#endif],
195[extern char foo[sizeof(long long) * CHAR_BIT >= 64 ? 1 : -1];],
196liberty_cv_uint64="unsigned long long", liberty_cv_uint64=none)])])])
197AC_MSG_RESULT($liberty_cv_uint64)
198if test "$liberty_cv_uint64" != none; then
199  AC_DEFINE_UNQUOTED(UNSIGNED_64BIT_TYPE, $liberty_cv_uint64,
200                     [Define to an unsigned 64-bit type available in the compiler.])
201fi
202
203# Given the above check, we always have uintptr_t or a fallback
204# definition.  So define HAVE_UINTPTR_T in case any imported code
205# relies on it.
206AC_DEFINE(HAVE_UINTPTR_T, 1, [Define if you have the \`uintptr_t' type.])
207
208AC_TYPE_PID_T
209
210# This is the list of functions which libiberty will provide if they
211# are not available on the host.
212
213funcs="asprintf"
214funcs="$funcs atexit"
215funcs="$funcs basename"
216funcs="$funcs bcmp"
217funcs="$funcs bcopy"
218funcs="$funcs bsearch"
219funcs="$funcs bzero"
220funcs="$funcs calloc"
221funcs="$funcs clock"
222funcs="$funcs ffs"
223funcs="$funcs getcwd"
224funcs="$funcs getpagesize"
225funcs="$funcs index"
226funcs="$funcs insque"
227funcs="$funcs memchr"
228funcs="$funcs memcmp"
229funcs="$funcs memcpy"
230funcs="$funcs memmove"
231funcs="$funcs mempcpy"
232funcs="$funcs memset"
233funcs="$funcs mkstemps"
234funcs="$funcs putenv"
235funcs="$funcs random"
236funcs="$funcs rename"
237funcs="$funcs rindex"
238funcs="$funcs setenv"
239funcs="$funcs snprintf"
240funcs="$funcs sigsetmask"
241funcs="$funcs stpcpy"
242funcs="$funcs stpncpy"
243funcs="$funcs strcasecmp"
244funcs="$funcs strchr"
245funcs="$funcs strdup"
246funcs="$funcs strncasecmp"
247funcs="$funcs strrchr"
248funcs="$funcs strstr"
249funcs="$funcs strtod"
250funcs="$funcs strtol"
251funcs="$funcs strtoul"
252funcs="$funcs tmpnam"
253funcs="$funcs vasprintf"
254funcs="$funcs vfprintf"
255funcs="$funcs vprintf"
256funcs="$funcs vsnprintf"
257funcs="$funcs vsprintf"
258funcs="$funcs waitpid"
259
260# Also in the old function.def file: alloca, vfork, getopt.
261
262vars="sys_errlist sys_nerr sys_siglist"
263
264checkfuncs="getrusage on_exit psignal strerror strsignal sysconf times sbrk gettimeofday"
265checkfuncs="$checkfuncs realpath canonicalize_file_name pstat_getstatic pstat_getdynamic sysmp"
266checkfuncs="$checkfuncs getsysinfo table sysctl"
267
268# These are neither executed nor required, but they help keep
269# autoheader happy without adding a bunch of text to acconfig.h.
270if test "x" = "y"; then
271  AC_CHECK_FUNCS(asprintf atexit basename bcmp bcopy bsearch bzero calloc clock \
272  getcwd getpagesize index insque mkstemps memchr memcmp memcpy \
273  memmove mempcpy memset putenv random rename rindex sigsetmask \
274  strcasecmp setenv stpcpy stpncpy strchr strdup strncasecmp strrchr strstr \
275  strtod strtol strtoul tmpnam vasprintf vfprintf vprintf \
276  vsprintf waitpid getrusage on_exit psignal strerror strsignal \
277  sysconf times sbrk gettimeofday ffs snprintf vsnprintf \
278  pstat_getstatic pstat_getdynamic sysmp getsysinfo table sysctl \
279  realpath canonicalize_file_name)
280  AC_DEFINE(HAVE_SYS_ERRLIST, 1, [Define if you have the sys_errlist variable.])
281  AC_DEFINE(HAVE_SYS_NERR,    1, [Define if you have the sys_nerr variable.])
282  AC_DEFINE(HAVE_SYS_SIGLIST, 1, [Define if you have the sys_siglist variable.])
283fi
284
285# For each of these functions, if the host does not provide the
286# function we want to put FN.o in LIBOBJS, and if the host does
287# provide the function, we want to define HAVE_FN in config.h.
288
289setobjs=
290CHECK=
291target_header_dir=
292if test -n "${with_target_subdir}"; then
293
294  # We are being configured as a target library.  AC_REPLACE_FUNCS
295  # may not work correctly, because the compiler may not be able to
296  # link executables.  Note that we may still be being configured
297  # native.
298
299  # If we are being configured for newlib, we know which functions
300  # newlib provide and which ones we will be expected to provide.
301
302  if test "x${with_newlib}" = "xyes"; then
303    AC_LIBOBJ([asprintf])
304    AC_LIBOBJ([basename])
305    AC_LIBOBJ([insque])
306    AC_LIBOBJ([random])
307    AC_LIBOBJ([strdup])
308    AC_LIBOBJ([vasprintf])
309
310    for f in $funcs; do
311      case "$f" in
312	asprintf | basename | insque | random | strdup | vasprintf)
313	  ;;
314	*)
315	  n=HAVE_`echo $f | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
316	  AC_DEFINE_UNQUOTED($n)
317	  ;;
318      esac
319    done
320
321    # newlib doesnt provide any of the variables in $vars, so we
322    # dont have to check them here.
323
324    # Of the functions in $checkfuncs, newlib only has strerror.
325    AC_DEFINE_NOAUTOHEADER(HAVE_STRERROR)
326
327    setobjs=yes
328
329  fi
330
331  # We may wish to install the target headers somewhere.
332  AC_ARG_ENABLE(install-libiberty,
333  [  --enable-install-libiberty       Install headers for end users],
334  enable_install_libiberty=$enableval,
335  enable_install_libiberty=no)dnl
336  
337  # Option parsed, now set things appropriately.
338  case x"$enable_install_libiberty" in
339    xyes|x)
340      target_header_dir=libiberty
341      ;;
342    xno)   
343      target_header_dir=
344      ;;
345    *) 
346      # This could be sanity-checked in various ways...
347      target_header_dir="${enable_install_libiberty}"
348      ;;
349  esac
350
351
352else
353
354   # Not a target library, so we set things up to run the test suite.
355   CHECK=check-cplus-dem
356
357fi
358
359AC_SUBST(CHECK)
360AC_SUBST(target_header_dir)
361
362case "${host}" in
363  *-*-cygwin* | *-*-mingw*)
364    AC_DEFINE_NOAUTOHEADER(HAVE_SYS_ERRLIST)
365    AC_DEFINE_NOAUTOHEADER(HAVE_SYS_NERR)
366    ;;
367esac
368
369if test -z "${setobjs}"; then
370  case "${host}" in
371
372  *-*-vxworks*)
373    # Handle VxWorks configuration specially, since on VxWorks the
374    # libraries are actually on the target board, not in the file
375    # system.
376    AC_LIBOBJ([basename])
377    AC_LIBOBJ([getpagesize])
378    AC_LIBOBJ([insque])
379    AC_LIBOBJ([random])
380    AC_LIBOBJ([strcasecmp])
381    AC_LIBOBJ([strncasecmp])
382    AC_LIBOBJ([strdup])
383    AC_LIBOBJ([vfork])
384    AC_LIBOBJ([waitpid])
385    AC_LIBOBJ([vasprintf])
386    for f in $funcs; do
387      case "$f" in
388	basename | getpagesize | insque | random | strcasecmp)
389	  ;;
390	strncasecmp | strdup | vfork | waitpid | vasprintf)
391	  ;;
392	*)
393	  n=HAVE_`echo $f | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
394	  AC_DEFINE_UNQUOTED($n)
395	  ;;
396      esac
397    done
398
399    # VxWorks doesn't provide any of the variables in $vars, so we
400    # don't have to check them here.
401
402    # Of the functions in $checkfuncs, VxWorks only has strerror.
403    AC_DEFINE_NOAUTOHEADER(HAVE_STRERROR)
404
405    setobjs=yes
406    ;;
407
408  esac
409fi
410
411if test -z "${setobjs}"; then
412
413  case "${host}" in
414
415  *-*-cygwin*)
416    # The Cygwin library actually uses a couple of files from
417    # libiberty when it is built.  If we are building a native
418    # Cygwin, and we run the tests, we will appear to have these
419    # files.  However, when we go on to build winsup, we will wind up
420    # with a library which does not have the files, since they should
421    # have come from libiberty.
422
423    # We handle this by removing the functions the winsup library
424    # provides from our shell variables, so that they appear to be
425    # missing.
426
427    # DJ - only if we're *building* cygwin, not just building *with* cygwin
428  
429    if test -n "${with_target_subdir}"
430    then
431      funcs="`echo $funcs | sed -e 's/random//'`"
432      AC_LIBOBJ([random])
433      vars="`echo $vars | sed -e 's/sys_siglist//'`"
434      checkfuncs="`echo $checkfuncs | sed -e 's/strsignal//' -e 's/psignal//'`"
435    fi
436    ;;
437
438  *-*-mingw32*)
439    # Under mingw32, sys_nerr and sys_errlist exist, but they are
440    # macros, so the test below won't find them.
441    libiberty_cv_var_sys_nerr=yes
442    libiberty_cv_var_sys_errlist=yes
443    ;;
444
445  *-*-uwin*)
446    # Under some versions of uwin, vfork is notoriously buggy and the test 
447    # can hang configure; on other versions, vfork exists just as a stub.
448    # FIXME: This should be removed once vfork in uwin's runtime is fixed.
449    ac_cv_func_vfork_works=no
450    # Under uwin 2.0+, sys_nerr and sys_errlist exist, but they are
451    # macros (actually, these are imported from a DLL, but the end effect 
452    # is the same), so the test below won't find them.
453    libiberty_cv_var_sys_nerr=yes
454    libiberty_cv_var_sys_errlist=yes
455    ;;
456
457  *-*-*vms*)
458    # Under VMS, vfork works very different than on Unix. The standard test 
459    # won't work, and it isn't easily adaptable. It makes more sense to
460    # just force it.
461    ac_cv_func_vfork_works=yes
462    ;;
463
464  esac
465
466  # We haven't set the list of objects yet.  Use the standard autoconf
467  # tests.  This will only work if the compiler works.
468  AC_ISC_POSIX
469  AC_REPLACE_FUNCS($funcs)
470  libiberty_AC_FUNC_C_ALLOCA
471  AC_FUNC_FORK
472  if test $ac_cv_func_vfork_works = no; then
473    AC_LIBOBJ([vfork])
474  fi
475  # We only need _doprnt if we might use it to implement v*printf.
476  if test $ac_cv_func_vprintf != yes \
477     || test $ac_cv_func_vfprintf != yes \
478     || test $ac_cv_func_vsprintf != yes; then
479    AC_REPLACE_FUNCS(_doprnt)
480  else
481    AC_CHECK_FUNCS(_doprnt)
482  fi
483
484  for v in $vars; do
485    AC_MSG_CHECKING([for $v])
486    AC_CACHE_VAL(libiberty_cv_var_$v,
487      [AC_LINK_IFELSE([AC_LANG_PROGRAM([[int *p;]],[[extern int $v []; p = $v;]])],
488		      [eval "libiberty_cv_var_$v=yes"],
489		      [eval "libiberty_cv_var_$v=no"])])
490    if eval "test \"`echo '$libiberty_cv_var_'$v`\" = yes"; then
491      AC_MSG_RESULT(yes)
492      n=HAVE_`echo $v | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
493      AC_DEFINE_UNQUOTED($n)
494    else
495      AC_MSG_RESULT(no)
496    fi
497  done
498
499  # special check for _system_configuration because AIX <4.3.2 do not
500  # contain the `physmem' member.
501  AC_MSG_CHECKING([for external symbol _system_configuration])
502  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/systemcfg.h>]],
503			[[double x = _system_configuration.physmem;]])],
504    [AC_MSG_RESULT([yes])
505    AC_DEFINE(HAVE__SYSTEM_CONFIGURATION, 1,
506	      [Define if you have the _system_configuration variable.])],
507    [AC_MSG_RESULT([no])])
508
509  AC_CHECK_FUNCS($checkfuncs)
510  libiberty_NEED_DECLARATION(canonicalize_file_name)
511fi
512
513# Figure out which version of pexecute to use.
514case "${host}" in
515     *-*-mingw* | *-*-winnt*)	pexecute=./pex-win32.o  ;;
516     *-*-msdosdjgpp*)		pexecute=./pex-djgpp.o  ;;
517     *-*-msdos*)		pexecute=./pex-msdos.o  ;;
518     *-*-os2-emx*)		pexecute=./pex-os2.o    ;;
519     *)				pexecute=./pex-unix.o   ;;
520esac
521AC_SUBST(pexecute)
522
523libiberty_AC_FUNC_STRNCMP
524
525# Install a library built with a cross compiler in $(tooldir) rather
526# than $(libdir).
527if test -z "${with_cross_host}"; then
528  INSTALL_DEST=libdir
529else
530  INSTALL_DEST=tooldir
531fi
532AC_SUBST(INSTALL_DEST)
533
534m4_pattern_allow(LIBOBJS)
535L=""
536for l in x $LIBOBJS; do
537  case $l in
538    x) ;;
539    *) L="$L ./$l" ;;
540  esac
541done
542LIBOBJS="$L"
543
544# We need multilib support, but only if configuring for the target.
545AC_CONFIG_FILES([Makefile testsuite/Makefile])
546AC_CONFIG_COMMANDS([default],
547  [[test -z "$CONFIG_HEADERS" || echo timestamp > stamp-h
548if test -n "$CONFIG_FILES"; then
549  if test -n "${with_target_subdir}"; then
550    # FIXME: We shouldn't need to set ac_file
551    ac_file=Makefile
552    LD="${ORIGINAL_LD_FOR_MULTILIBS}"
553    . ${libiberty_topdir}/config-ml.in
554  fi
555fi]],
556[[srcdir=${srcdir}
557host=${host}
558target=${target}
559with_target_subdir=${with_target_subdir}
560with_multisubdir=${with_multisubdir}
561ac_configure_args="--enable-multilib ${ac_configure_args}"
562CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
563ORIGINAL_LD_FOR_MULTILIBS="${ORIGINAL_LD_FOR_MULTILIBS}"
564libiberty_topdir=${libiberty_topdir}
565]])
566AC_OUTPUT
567