gcc/libiberty/configure.in

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dnl Process this file with autoconf to produce a configure script
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AC_PREREQ(2.13)
AC_INIT(pexecute.c)
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dnl We use these options to decide which functions to include.
AC_ARG_WITH(target-subdir,
[ --with-target-subdir=SUBDIR Configuring in a subdirectory])
AC_ARG_WITH(cross-host,
[ --with-cross-host=HOST Configuring with a cross compiler])
AC_ARG_WITH(newlib,
[ --with-newlib Configuring with newlib])
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if test "${srcdir}" = "."; then
if test -z "${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="${srcdir}/.."
fi
AC_CONFIG_AUX_DIR($libiberty_topdir)
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, :)
# FIXME: We temporarily define our own version of AC_PROG_CC. This is
# copied from autoconf 2.12, but does not call AC_PROG_CC_WORKS. We
# are probably using a cross compiler, which will not be able to fully
# link an executable. This should really be fixed in autoconf
# itself.
AC_DEFUN(LIB_AC_PROG_CC,
[AC_BEFORE([$0], [AC_PROG_CPP])dnl
AC_PROVIDE([AC_PROG_CC])
AC_CHECK_PROG(CC, gcc, gcc)
if test -z "$CC"; then
AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc)
test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH])
fi
AC_PROG_CC_GNU
if test $ac_cv_prog_gcc = yes; then
GCC=yes
dnl Check whether -g works, even if CFLAGS is set, in case the package
dnl plays around with CFLAGS (such as to build both debugging and
dnl normal versions of a library), tasteless as that idea is.
ac_test_CFLAGS="${CFLAGS+set}"
ac_save_CFLAGS="$CFLAGS"
CFLAGS=
AC_PROG_CC_G
if test "$ac_test_CFLAGS" = set; then
CFLAGS="$ac_save_CFLAGS"
elif test $ac_cv_prog_cc_g = yes; then
CFLAGS="-g -O2"
else
CFLAGS="-O2"
fi
else
GCC=
test "${CFLAGS+set}" = set || CFLAGS="-g"
fi
])
LIB_AC_PROG_CC
AC_ISC_POSIX
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
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. ${srcdir}/config.table
host_makefile_frag=${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 stdlib.h string.h unistd.h strings.h sys/time.h sys/resource.h sys/stat.h)
AC_HEADER_SYS_WAIT
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# 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="$funcs bzero"
funcs="$funcs calloc"
funcs="$funcs clock"
funcs="$funcs getcwd"
funcs="$funcs getpagesize"
funcs="$funcs index"
funcs="$funcs insque"
funcs="$funcs memchr"
funcs="$funcs memcmp"
funcs="$funcs memcpy"
funcs="$funcs memmove"
funcs="$funcs memset"
funcs="$funcs mkstemps"
funcs="$funcs putenv"
funcs="$funcs random"
funcs="$funcs rename"
funcs="$funcs rindex"
funcs="$funcs setenv"
funcs="$funcs sigsetmask"
funcs="$funcs strcasecmp"
funcs="$funcs strchr"
funcs="$funcs strdup"
funcs="$funcs strncasecmp"
funcs="$funcs strrchr"
funcs="$funcs strstr"
funcs="$funcs strtod"
funcs="$funcs strtol"
funcs="$funcs strtoul"
funcs="$funcs tmpnam"
funcs="$funcs vasprintf"
funcs="$funcs vfprintf"
funcs="$funcs vprintf"
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"
# 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 bzero calloc clock getcwd)
AC_CHECK_FUNCS(getpagesize index insque mkstemps memchr memcmp memcpy memmove)
AC_CHECK_FUNCS(memset putenv random rename rindex sigsetmask strcasecmp)
AC_CHECK_FUNCS(setenv strchr strdup strncasecmp strrchr strstr strtod strtol)
AC_CHECK_FUNCS(strtoul tmpnam vasprintf vfprintf vprintf vsprintf waitpid)
AC_DEFINE(HAVE_SYS_ERRLIST)
AC_DEFINE(HAVE_SYS_NERR)
AC_DEFINE(HAVE_SYS_SIGLIST)
AC_CHECK_FUNCS(getrusage on_exit psignal strerror strsignal sysconf times)
AC_CHECK_FUNCS(sbrk gettimeofday)
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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. Also,
# if the host does not provide alloca, we set ALLOCA to alloca.o
setobjs=
CHECK=
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
ALLOCA="alloca.o"
LIBOBJS="asprintf.o basename.o insque.o random.o strdup.o vasprintf.o"
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 $checkfuncs, newlib only has strerror.
AC_DEFINE(HAVE_STRERROR)
setobjs=yes
fi
else
# Not a target library, so we set things up to run the test suite.
CHECK=check-cplus-dem
fi
AC_SUBST(CHECK)
if test -z "${setobjs}"; then
case "${host}" in
*-*-vxworks*)
# Handle VxWorks configuration specially, since on VxWorks the
# libraries are actually on the target board, not in the file
# system.
LIBOBJS="basename.o getpagesize.o insque.o random.o strcasecmp.o"
LIBOBJS="$LIBOBJS strncasecmp.o strdup.o vfork.o waitpid.o vasprintf.o"
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 $checkfuncs, VxWorks only has strerror.
AC_DEFINE(HAVE_STRERROR)
setobjs=yes
;;
esac
fi
if test -z "${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.
funcs="`echo $funcs | sed -e 's/random//'`"
LIBOBJS="$LIBOBJS random.o"
vars="`echo $vars | sed -e 's/sys_siglist//'`"
checkfuncs="`echo $checkfuncs | sed -e 's/strsignal//' -e 's/psignal//'`"
;;
*-*-mingw32*)
# Under mingw32, sys_nerr and sys_errlist exist, but they are
# macros, so the test below won't find them.
vars="`echo $vars | sed -e 's/sys_nerr//' -e 's/sys_errlist//'`"
AC_DEFINE(HAVE_SYS_NERR)
AC_DEFINE(HAVE_SYS_ERRLIST)
;;
*-*-uwin*)
# Under some versions of uwin, vfork is notoriously buggy and the test
# can hang configure; on other versions, vfork exists just as a stub.
# FIXME: This should be removed once vfork in uwin's runtime is fixed.
ac_cv_func_vfork_works=no
# Under uwin 2.0+, sys_nerr and sys_errlist exist, but they are
# macros (actually, these are imported from a DLL, but the end effect
# is the same), so the test below won't find them.
AC_DEFINE(HAVE_SYS_NERR)
AC_DEFINE(HAVE_SYS_ERRLIST)
;;
esac
# We haven't set the list of objects yet. Use the standard autoconf
# tests. This will only work if the compiler works.
AC_PROG_CC_WORKS
AC_REPLACE_FUNCS($funcs)
case "${host}" in
*-*-interix)
# On Interix, it wrongly concludes that the MSVC compiler supports alloca.
# (MSVC does on Win32, not on Interix.)
# This should be temporary.
ac_cv_header_alloca_h=no
ac_cv_func_alloca_works=no
ALLOCA=alloca.o
cat >> confdefs.h <<\EOF
#define C_ALLOCA 1
EOF
cat >> confdefs.h <<EOF
#define STACK_DIRECTION -1
EOF
;;
*)
AC_FUNC_ALLOCA
;;
esac
AC_FUNC_VFORK
if test $ac_cv_func_vfork_works = no; then
LIBOBJS="$LIBOBJS vfork.o"
fi
for v in $vars; do
AC_MSG_CHECKING([for $v])
AC_CACHE_VAL(libiberty_cv_var_$v,
[AC_TRY_LINK([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)
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else
AC_MSG_RESULT(no)
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fi
done
AC_CHECK_FUNCS($checkfuncs)
fi
# 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
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fi
AC_SUBST(INSTALL_DEST)
# We need multilib support, but only if configuring for the target.
AC_OUTPUT(Makefile testsuite/Makefile,
[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
. ${libiberty_topdir}/config-ml.in
fi
fi],
srcdir=${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}
libiberty_topdir=${libiberty_topdir}
)