Subversion Repositories openrisc_me

dnl Process this file with autoconf to produce a configure script

AC_PREREQ(2.59)

AC_INIT

AC_CONFIG_SRCDIR([xmalloc.c])

# This works around the fact that libtool configuration may change LD

# for this particular configuration, but some shells, instead of

# keeping the changes in LD private, export them just because LD is

# exported.  We don't use libtool yet, but some day we might, so...

ORIGINAL_LD_FOR_MULTILIBS=$LD

dnl We use these options to decide which functions to include.

AC_ARG_WITH(target-subdir,

[  --with-target-subdir=SUBDIR      Configuring in a subdirectory for target])

AC_ARG_WITH(build-subdir,

[  --with-build-subdir=SUBDIR       Configuring in a subdirectory for build])

AC_ARG_WITH(cross-host,

[  --with-cross-host=HOST           Configuring with a cross compiler])

AC_ARG_WITH(newlib,

[  --with-newlib                    Configuring with newlib])

if test "${srcdir}" = "."; then

  if test -n "${with_build_subdir}"; then

    libiberty_topdir="${srcdir}/../.."

    with_target_subdir=

  elif test -z "${with_target_subdir}"; then

    libiberty_topdir="${srcdir}/.."

  else

    if test "${with_target_subdir}" != "."; then

      libiberty_topdir="${srcdir}/${with_multisrctop}../.."

    else

      libiberty_topdir="${srcdir}/${with_multisrctop}.."

    fi

  fi

else

  libiberty_topdir="${srcdir}/.."

fi

AC_SUBST(libiberty_topdir)

AC_CONFIG_AUX_DIR($libiberty_topdir)

dnl Very limited version of automake's enable-maintainer-mode

AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])

  dnl maintainer-mode is disabled by default

  AC_ARG_ENABLE(maintainer-mode,

[  --enable-maintainer-mode

                          enable make rules and dependencies not useful

                          (and sometimes confusing) to the casual installer],

      maintainer_mode=$enableval,

      maintainer_mode=no)

AC_MSG_RESULT($maintainer_mode)

if test "$maintainer_mode" = "yes"; then

  MAINT=''

  NOTMAINT='#'

else

  MAINT='#'

  NOTMAINT=''

fi

AC_SUBST(MAINT)dnl

AC_SUBST(NOTMAINT)dnl

# Do we have a single-tree copy of texinfo?  Even if we do, we can't

# rely on it - libiberty is built before texinfo.

AC_CHECK_PROG(MAKEINFO, makeinfo, makeinfo, )

if test "x$MAKEINFO" = "x"; then

    MAKEINFO="@echo makeinfo missing; true"

    BUILD_INFO=

else

    BUILD_INFO=info

    case "$MAKEINFO" in

      */missing\ makeinfo*)

        BUILD_INFO=

        AC_MSG_WARN([

*** Makeinfo is missing. Info documentation will not be built.])

        ;;

      *)

        case x"`$MAKEINFO --version | grep 'GNU texinfo'`" in

          x*\ [[1-3]].* )

            MAKEINFO="@echo $MAKEINFO is too old, 4.0 or newer required; true"

            BUILD_INFO=

            AC_MSG_WARN([

*** Makeinfo is too old. Info documentation will not be built.])

          ;;

        esac

        ;;

    esac

fi

AC_SUBST(MAKEINFO)

AC_SUBST(BUILD_INFO)

AC_CHECK_PROG(PERL, perl, perl, )

if test x"$PERL" = x""; then

  HAVE_PERL='#'

else

  HAVE_PERL=''

fi

AC_SUBST(HAVE_PERL)

AC_CANONICAL_HOST

dnl When we start using automake:

dnl AM_INIT_AUTOMAKE(libiberty, 1.0)

dnl These must be called before AM_PROG_LIBTOOL, because it may want

dnl to call AC_CHECK_PROG.

AC_CHECK_TOOL(AR, ar)

AC_CHECK_TOOL(RANLIB, ranlib, :)

dnl When switching to automake, replace the following with AM_ENABLE_MULTILIB.

# Add --enable-multilib to configure.

# Default to --enable-multilib

AC_ARG_ENABLE(multilib,

[  --enable-multilib       build many library versions (default)],

[case "$enableval" in

  yes) multilib=yes ;;

  no)  multilib=no ;;

  *)   AC_MSG_ERROR([bad value $enableval for multilib option]) ;;

 esac],

              [multilib=yes])

# Even if the default multilib is not a cross compilation,

# it may be that some of the other multilibs are.

if test $cross_compiling = no && test $multilib = yes \

   && test "x${with_multisubdir}" != x ; then

   cross_compiling=maybe

fi

GCC_NO_EXECUTABLES

AC_PROG_CC

AC_PROG_CPP_WERROR

ACX_PROG_CC_WARNING_OPTS([-W -Wall -Wwrite-strings -Wc++-compat \

                          -Wstrict-prototypes], [ac_libiberty_warn_cflags])

ACX_PROG_CC_WARNING_ALMOST_PEDANTIC([], [ac_libiberty_warn_cflags])

AC_PROG_CC_C_O

# autoconf is lame and doesn't give us any substitution variable for this.

if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then

  NO_MINUS_C_MINUS_O=yes

else

  OUTPUT_OPTION='-o $@'

fi

AC_SUBST(NO_MINUS_C_MINUS_O)

AC_SUBST(OUTPUT_OPTION)

AC_C_CONST

AC_C_INLINE

AC_C_BIGENDIAN

dnl When we start using libtool:

dnl Default to a non shared library.  This may be overridden by the

dnl configure option --enable-shared.

dnl AM_DISABLE_SHARED

dnl When we start using libtool:

dnl AM_PROG_LIBTOOL

dnl When we start using automake:

dnl AM_CONFIG_HEADER(config.h:config.in)

AC_CONFIG_HEADER(config.h:config.in)

dnl When we start using automake:

dnl AM_MAINTAINER_MODE

dnl AC_EXEEXT

dnl When we start using automake:

dnl AM_PROG_INSTALL

AC_PROG_INSTALL

# Don't build the shared library for build.

if [[ -n "${with_build_subdir}" ]]; then

  enable_shared=no

fi

frag=

case "${host}" in

  rs6000-ibm-aix3.1 | rs6000-ibm-aix)

                        frag=mh-aix ;;

  *-*-cxux7*)           frag=mh-cxux7 ;;

  *-*-freebsd2.1.*)     frag=mh-fbsd21 ;;

  *-*-freebsd2.2.[[012]])       frag=mh-fbsd21 ;;

  i370-*-opened*)       frag=mh-openedition ;;

  i[[34567]]86-*-windows*)      frag=mh-windows ;;

esac

if [[ -n "${frag}" ]]; then

  frag=${libiberty_topdir}/libiberty/config/$frag

fi

# If they didn't specify --enable-shared, don't generate shared libs.

case "${enable_shared}" in

  yes) shared=yes ;;

  no) shared=no ;;

  "") shared=no ;;

  *) shared=yes ;;

esac

if [[ "${shared}" = "yes" ]]; then

  case "${host}" in

    *-*-cygwin*)        ;;

    alpha*-*-linux*)    PICFLAG=-fPIC ;;

    arm*-*-*)           PICFLAG=-fPIC ;;

    hppa*-*-*)          PICFLAG=-fPIC ;;

    i370-*-*)           PICFLAG=-fPIC ;;

    ia64-*-*)           PICFLAG=-fpic ;;

    i[[34567]]86-*-* | x86_64-*-*)

                        PICFLAG=-fpic ;;

    m68k-*-*)           PICFLAG=-fpic ;;

    mips*-*-linux)      PICFLAG=-fPIC ;;

    powerpc*-*-aix*)    ;;

    powerpc*-*-*)       PICFLAG=-fPIC ;;

    sparc*-*-*)         case "${CFLAGS}" in

                          *-fpic* ) PICFLAG=-fpic ;;

                          * ) PICFLAG=-fPIC ;;

                        esac ;;

    s390*-*-*)          PICFLAG=-fpic ;;

  esac

fi

AC_SUBST(PICFLAG)

echo "# Warning: this fragment is automatically generated" > temp-frag

if [[ -n "${frag}" ]] && [[ -f "${frag}" ]]; then

  echo "Appending ${frag} to xhost-mkfrag"

  echo "# Following fragment copied from ${frag}" >> temp-frag

  cat ${frag} >> temp-frag

fi

# record if we want to build shared libs.

if [[ "${shared}" = "yes" ]]; then

  echo enable_shared = yes >> temp-frag

else

  echo enable_shared = no >> temp-frag

fi

frag=xhost-mkfrag

${CONFIG_SHELL-/bin/sh} ${libiberty_topdir}/move-if-change temp-frag xhost-mkfrag

host_makefile_frag=${frag}

AC_SUBST_FILE(host_makefile_frag)

# It's OK to check for header files.  Although the compiler may not be

# able to link anything, it had better be able to at least compile

# something.

AC_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)

AC_HEADER_SYS_WAIT

AC_HEADER_TIME

libiberty_AC_DECLARE_ERRNO

# Determine the size of an int for struct fibnode.

AC_CHECK_SIZEOF([int])

AC_CHECK_TYPE(uintptr_t, unsigned long)

# Look for a 64-bit type.

AC_MSG_CHECKING([for a 64-bit type])

AC_CACHE_VAL(liberty_cv_uint64,

[AC_TRY_COMPILE(

[#ifdef HAVE_STDINT_H

#include 

#endif],

[extern uint64_t foo;],

liberty_cv_uint64=uint64_t,

[AC_TRY_COMPILE(

[#ifdef HAVE_LIMITS_H

#include 

#endif

#ifndef CHAR_BIT

#define CHAR_BIT 8

#endif],

[extern char foo[sizeof(long) * CHAR_BIT >= 64 ? 1 : -1];],

liberty_cv_uint64="unsigned long",

[AC_TRY_COMPILE(

[#ifdef HAVE_LIMITS_H

#include 

#endif

#ifndef CHAR_BIT

#define CHAR_BIT 8

#endif],

[extern char foo[sizeof(long long) * CHAR_BIT >= 64 ? 1 : -1];],

liberty_cv_uint64="unsigned long long", liberty_cv_uint64=none)])])])

AC_MSG_RESULT($liberty_cv_uint64)

if test "$liberty_cv_uint64" != none; then

  AC_DEFINE_UNQUOTED(UNSIGNED_64BIT_TYPE, $liberty_cv_uint64,

                     [Define to an unsigned 64-bit type available in the compiler.])

fi

# Given the above check, we always have uintptr_t or a fallback

# definition.  So define HAVE_UINTPTR_T in case any imported code

# relies on it.

AC_DEFINE(HAVE_UINTPTR_T, 1, [Define if you have the \`uintptr_t' type.])

AC_TYPE_PID_T

# This is the list of functions which libiberty will provide if they

# are not available on the host.

funcs="asprintf"

funcs="$funcs atexit"

funcs="$funcs basename"

funcs="$funcs bcmp"

funcs="$funcs bcopy"

funcs="$funcs bsearch"

funcs="$funcs bzero"

funcs="$funcs calloc"

funcs="$funcs clock"

funcs="$funcs ffs"

funcs="$funcs getcwd"

funcs="$funcs getpagesize"

funcs="$funcs gettimeofday"

funcs="$funcs index"

funcs="$funcs insque"

funcs="$funcs memchr"

funcs="$funcs memcmp"

funcs="$funcs memcpy"

funcs="$funcs memmove"

funcs="$funcs mempcpy"

funcs="$funcs memset"

funcs="$funcs mkstemps"

funcs="$funcs putenv"

funcs="$funcs random"

funcs="$funcs rename"

funcs="$funcs rindex"

funcs="$funcs setenv"

funcs="$funcs snprintf"

funcs="$funcs sigsetmask"

funcs="$funcs stpcpy"

funcs="$funcs stpncpy"

funcs="$funcs strcasecmp"

funcs="$funcs strchr"

funcs="$funcs strdup"

funcs="$funcs strncasecmp"

funcs="$funcs strndup"

funcs="$funcs strrchr"

funcs="$funcs strstr"

funcs="$funcs strtod"

funcs="$funcs strtol"

funcs="$funcs strtoul"

funcs="$funcs strverscmp"

funcs="$funcs tmpnam"

funcs="$funcs vasprintf"

funcs="$funcs vfprintf"

funcs="$funcs vprintf"

funcs="$funcs vsnprintf"

funcs="$funcs vsprintf"

funcs="$funcs waitpid"

# Also in the old function.def file: alloca, vfork, getopt.

vars="sys_errlist sys_nerr sys_siglist"

checkfuncs="getrusage on_exit psignal strerror strsignal sysconf times sbrk gettimeofday"

checkfuncs="$checkfuncs realpath canonicalize_file_name pstat_getstatic pstat_getdynamic sysmp"

checkfuncs="$checkfuncs getsysinfo table sysctl wait3 wait4 __fsetlocking"

# These are neither executed nor required, but they help keep

# autoheader happy without adding a bunch of text to acconfig.h.

if test "x" = "y"; then

  AC_CHECK_FUNCS(asprintf atexit basename bcmp bcopy bsearch bzero calloc clock \

  getcwd getpagesize gettimeofday index insque mkstemps memchr memcmp memcpy \

  memmove mempcpy memset putenv random rename rindex sigsetmask \

  strcasecmp setenv stpcpy stpncpy strchr strdup strncasecmp strndup strrchr strstr \

  strtod strtol strtoul strverscmp tmpnam vasprintf vfprintf vprintf \

  vsprintf waitpid getrusage on_exit psignal strerror strsignal \

  sysconf times sbrk gettimeofday ffs snprintf vsnprintf \

  pstat_getstatic pstat_getdynamic sysmp getsysinfo table sysctl wait3 wait4 \

  realpath canonicalize_file_name __fsetlocking)

  AC_CHECK_DECLS([basename, ffs, asprintf, vasprintf, snprintf, vsnprintf])

  AC_DEFINE(HAVE_SYS_ERRLIST, 1, [Define if you have the sys_errlist variable.])

  AC_DEFINE(HAVE_SYS_NERR,    1, [Define if you have the sys_nerr variable.])

  AC_DEFINE(HAVE_SYS_SIGLIST, 1, [Define if you have the sys_siglist variable.])

fi

# For each of these functions, if the host does not provide the

# function we want to put FN.o in LIBOBJS, and if the host does

# provide the function, we want to define HAVE_FN in config.h.

setobjs=

CHECK=

target_header_dir=

if test -n "${with_target_subdir}"; then

  # We are being configured as a target library.  AC_REPLACE_FUNCS

  # may not work correctly, because the compiler may not be able to

  # link executables.  Note that we may still be being configured

  # native.

  # If we are being configured for newlib, we know which functions

  # newlib provide and which ones we will be expected to provide.

  if test "x${with_newlib}" = "xyes"; then

    AC_LIBOBJ([asprintf])

    AC_LIBOBJ([basename])

    AC_LIBOBJ([insque])

    AC_LIBOBJ([random])

    AC_LIBOBJ([strdup])

    AC_LIBOBJ([vasprintf])

    for f in $funcs; do

      case "$f" in

        asprintf | basename | insque | random | strdup | vasprintf)

          ;;

        *)

          n=HAVE_`echo $f | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`

          AC_DEFINE_UNQUOTED($n)

          ;;

      esac

    done

    # newlib doesnt provide any of the variables in $vars, so we

    # dont have to check them here.

    # Of the functions in $checkfuncs, newlib only has strerror.

    AC_DEFINE(HAVE_STRERROR)

    setobjs=yes

  fi

  # If we are being configured for Mingw, we know which functions

  # Mingw provides and which ones we will be expected to provide.

  case "${host}" in

  *-*-mingw*)

    AC_LIBOBJ([asprintf])

    AC_LIBOBJ([basename])

    AC_LIBOBJ([bcmp])

    AC_LIBOBJ([bcopy])

    AC_LIBOBJ([bzero])

    AC_LIBOBJ([clock])

    AC_LIBOBJ([ffs])

    AC_LIBOBJ([getpagesize])

    AC_LIBOBJ([index])

    AC_LIBOBJ([insque])

    AC_LIBOBJ([mempcpy])

    AC_LIBOBJ([mkstemps])

    AC_LIBOBJ([random])

    AC_LIBOBJ([rindex])

    AC_LIBOBJ([sigsetmask])

    AC_LIBOBJ([stpcpy])

    AC_LIBOBJ([stpncpy])

    AC_LIBOBJ([strndup])

    AC_LIBOBJ([strverscmp])

    AC_LIBOBJ([vasprintf])

    AC_LIBOBJ([waitpid])

    for f in $funcs; do

      case "$f" in

        asprintf | basename | bcmp | bcopy | bzero | clock | ffs | getpagesize | index | insque | mempcpy | mkstemps | random | rindex | sigsetmask | stpcpy | stpncpy | strdup | strndup | strverscmp | vasprintf | waitpid)

          ;;

        *)

          n=HAVE_`echo $f | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`

          AC_DEFINE_UNQUOTED($n)

          ;;

      esac

    done

    # Mingw doesnt provide any of the variables in $vars, so we

    # dont have to check them here.

    # Of the functions in $checkfuncs, Mingw only has strerror.

    AC_DEFINE(HAVE_STRERROR)

    setobjs=yes

    ;;

  esac

  # We may wish to install the target headers somewhere.

  AC_ARG_ENABLE(install-libiberty,

  [  --enable-install-libiberty       Install headers for end users],

  enable_install_libiberty=$enableval,

  enable_install_libiberty=no)dnl

  # Option parsed, now set things appropriately.

  case x"$enable_install_libiberty" in

    xyes|x)

      target_header_dir=libiberty

      ;;

    xno)

      target_header_dir=

      ;;

    *)

      # This could be sanity-checked in various ways...

      target_header_dir="${enable_install_libiberty}"

      ;;

  esac

else

   # Not a target library, so we set things up to run the test suite.

   CHECK=really-check

fi

AC_SUBST(CHECK)

AC_SUBST(target_header_dir)

case "${host}" in

  *-*-cygwin* | *-*-mingw*)

    AC_DEFINE(HAVE_SYS_ERRLIST)

    AC_DEFINE(HAVE_SYS_NERR)

    ;;

esac

if test -z "${setobjs}"; then

  case "${host}" in

  *-*-vxworks*)

    # Handle VxWorks configuration specially, since on VxWorks the

    # libraries are actually on the target board, not in the file

    # system.

    AC_LIBOBJ([basename])

    AC_LIBOBJ([getpagesize])

    AC_LIBOBJ([insque])

    AC_LIBOBJ([random])

    AC_LIBOBJ([strcasecmp])

    AC_LIBOBJ([strncasecmp])

    AC_LIBOBJ([strdup])

    AC_LIBOBJ([vfork])

    AC_LIBOBJ([waitpid])

    AC_LIBOBJ([vasprintf])

    for f in $funcs; do

      case "$f" in

        basename | getpagesize | insque | random | strcasecmp)

          ;;

        strncasecmp | strdup | vfork | waitpid | vasprintf)

          ;;

        *)

          n=HAVE_`echo $f | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`

          AC_DEFINE_UNQUOTED($n)

          ;;

      esac

    done

    # VxWorks doesn't provide any of the variables in $vars, so we

    # don't have to check them here.

    # Of the functions in $checkfuncs, VxWorks only has strerror.

    AC_DEFINE(HAVE_STRERROR)

    setobjs=yes

    ;;

  *-*-msdosdjgpp)

    for f in atexit basename bcmp bcopy bsearch bzero calloc clock ffs \

             getcwd getpagesize getrusage gettimeofday \

             index insque memchr memcmp memcpy memmove memset psignal \

             putenv random rename rindex sbrk setenv stpcpy strcasecmp \

             strchr strdup strerror strncasecmp strrchr strstr strtod \

             strtol strtoul sysconf times tmpnam vfprintf vprintf \

             vsprintf waitpid

    do

      n=HAVE_`echo $f | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`

      AC_DEFINE_UNQUOTED($n)

    done

    setobjs=yes

    ;;

  esac

fi

if test -z "${setobjs}"; then

  case "${host}" in

  *-*-cygwin*)

    # The Cygwin library actually uses a couple of files from

    # libiberty when it is built.  If we are building a native

    # Cygwin, and we run the tests, we will appear to have these

    # files.  However, when we go on to build winsup, we will wind up

    # with a library which does not have the files, since they should

    # have come from libiberty.

    # We handle this by removing the functions the winsup library

    # provides from our shell variables, so that they appear to be

    # missing.

    # DJ - only if we're *building* cygwin, not just building *with* cygwin

    if test -n "${with_target_subdir}"

    then

      funcs="`echo $funcs | sed -e 's/random//'`"

      AC_LIBOBJ([random])

      vars="`echo $vars | sed -e 's/sys_siglist//'`"

      checkfuncs="`echo $checkfuncs | sed -e 's/strsignal//' -e 's/psignal//'`"

    fi

    ;;

  *-*-mingw32*)

    # Under mingw32, sys_nerr and sys_errlist exist, but they are

    # macros, so the test below won't find them.

    libiberty_cv_var_sys_nerr=yes

    libiberty_cv_var_sys_errlist=yes

    ;;

  *-*-msdosdjgpp*)

    # vfork and fork are stubs.

    ac_cv_func_vfork_works=no

    ;;

  *-*-uwin*)

    # Under some versions of uwin, vfork is notoriously buggy and the test

    # can hang configure; on other versions, vfork exists just as a stub.

    # FIXME: This should be removed once vfork in uwin's runtime is fixed.

    ac_cv_func_vfork_works=no

    # Under uwin 2.0+, sys_nerr and sys_errlist exist, but they are

    # macros (actually, these are imported from a DLL, but the end effect

    # is the same), so the test below won't find them.

    libiberty_cv_var_sys_nerr=yes

    libiberty_cv_var_sys_errlist=yes

    ;;

  *-*-*vms*)

    # Under VMS, vfork works very different than on Unix. The standard test

    # won't work, and it isn't easily adaptable. It makes more sense to

    # just force it.

    ac_cv_func_vfork_works=yes

    ;;

  esac

  # We haven't set the list of objects yet.  Use the standard autoconf

  # tests.  This will only work if the compiler works.

  AC_ISC_POSIX

  AC_REPLACE_FUNCS($funcs)

  libiberty_AC_FUNC_C_ALLOCA

  AC_FUNC_FORK

  if test $ac_cv_func_vfork_works = no; then

    AC_LIBOBJ([vfork])

  fi

  # We only need _doprnt if we might use it to implement v*printf.

  if test $ac_cv_func_vprintf != yes \

     || test $ac_cv_func_vfprintf != yes \

     || test $ac_cv_func_vsprintf != yes; then

    AC_REPLACE_FUNCS(_doprnt)

  else

    AC_CHECK_FUNCS(_doprnt)

  fi

  for v in $vars; do

    AC_MSG_CHECKING([for $v])

    AC_CACHE_VAL(libiberty_cv_var_$v,

      [AC_LINK_IFELSE([AC_LANG_PROGRAM([[int *p;]],[[extern int $v []; p = $v;]])],

                      [eval "libiberty_cv_var_$v=yes"],

                      [eval "libiberty_cv_var_$v=no"])])

    if eval "test \"`echo '$libiberty_cv_var_'$v`\" = yes"; then

      AC_MSG_RESULT(yes)

      n=HAVE_`echo $v | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`

      AC_DEFINE_UNQUOTED($n)

    else

      AC_MSG_RESULT(no)

    fi

  done

  # special check for _system_configuration because AIX <4.3.2 do not

  # contain the `physmem' member.

  AC_MSG_CHECKING([for external symbol _system_configuration])

  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include ]],

                        [[double x = _system_configuration.physmem;]])],

    [AC_MSG_RESULT([yes])

    AC_DEFINE(HAVE__SYSTEM_CONFIGURATION, 1,

              [Define if you have the _system_configuration variable.])],

    [AC_MSG_RESULT([no])])

  AC_CHECK_FUNCS($checkfuncs)

  AC_CHECK_DECLS([basename, ffs, asprintf, vasprintf, snprintf, vsnprintf])

  AC_CHECK_DECLS([calloc, getenv, getopt, malloc, realloc, sbrk])

  AC_CHECK_DECLS([strverscmp])

  libiberty_NEED_DECLARATION(canonicalize_file_name)

fi

# Figure out which version of pexecute to use.

case "${host}" in

     *-*-mingw* | *-*-winnt*)   pexecute=./pex-win32.o  ;;

     *-*-msdosdjgpp*)           pexecute=./pex-djgpp.o  ;;

     *-*-msdos*)                pexecute=./pex-msdos.o  ;;

     *)                         pexecute=./pex-unix.o   ;;

esac

AC_SUBST(pexecute)

libiberty_AC_FUNC_STRNCMP

# Install a library built with a cross compiler in $(tooldir) rather

# than $(libdir).

if test -z "${with_cross_host}"; then

  INSTALL_DEST=libdir

else

  INSTALL_DEST=tooldir

fi

AC_SUBST(INSTALL_DEST)

m4_pattern_allow(LIBOBJS)

L=""

for l in x $LIBOBJS; do

  case $l in

    x) ;;

    *) L="$L ./$l" ;;

  esac

done

LIBOBJS="$L"

dnl Required by html and install-html

AC_SUBST(datarootdir)

AC_SUBST(docdir)

AC_SUBST(htmldir)

# We need multilib support, but only if configuring for the target.

AC_CONFIG_FILES([Makefile testsuite/Makefile])

AC_CONFIG_COMMANDS([default],

  [[test -z "$CONFIG_HEADERS" || echo timestamp > stamp-h

if test -n "$CONFIG_FILES"; then

  if test -n "${with_target_subdir}"; then

    # FIXME: We shouldn't need to set ac_file

    ac_file=Makefile

    LD="${ORIGINAL_LD_FOR_MULTILIBS}"

    . ${libiberty_topdir}/config-ml.in

  fi

fi]],

[[srcdir=${srcdir}

host=${host}

target=${target}

with_target_subdir=${with_target_subdir}

with_multisubdir=${with_multisubdir}

ac_configure_args="--enable-multilib ${ac_configure_args}"

CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}

ORIGINAL_LD_FOR_MULTILIBS="${ORIGINAL_LD_FOR_MULTILIBS}"

libiberty_topdir=${libiberty_topdir}

]])

AC_OUTPUT