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# Copyright (c) 1995, 1996 Cygnus Support
#
# The authors hereby grant permission to use, copy, modify, distribute,
# and license this software and its documentation for any purpose, provided
# that existing copyright notices are retained in all copies and that this
# notice is included verbatim in any distributions. No written agreement,
# license, or royalty fee is required for any of the authorized uses.
# Modifications to this software may be copyrighted by their authors
# and need not follow the licensing terms described here, provided that
# the new terms are clearly indicated on the first page of each file where
# they apply.
#
# Process this file with autoconf to produce a configure script.
#
AC_PREREQ(2.5)dnl
AC_INIT(close.c)
AC_CONFIG_HEADER(config.h)
if test "${enable_shared}" = "yes" ; then
echo "Shared libraries not supported for cross compiling, ignored"
fi
if test "$srcdir" = "." ; then
if test "${with_target_subdir}" != "." ; then
libgloss_topdir="${srcdir}/${with_multisrctop}../../.."
else
libgloss_topdir="${srcdir}/${with_multisrctop}../.."
fi
else
libgloss_topdir="${srcdir}/../.."
fi
AC_CONFIG_AUX_DIR($libgloss_topdir)
AC_CANONICAL_SYSTEM
AC_ARG_PROGRAM
AC_PROG_INSTALL
# 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 building a library that must be included in all links, so we
# can't link an executable until this lib is built.
# autoconf should provide a way to do this.
AC_DEFUN(LIB_AC_PROG_CC,
[AC_BEFORE([$0], [AC_PROG_CPP])dnl
AC_CHECK_PROG(CC, gcc, gcc)
if test -z "$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
])
AC_DEFINE(HAVE_GNU_LD)
dnl Make sure syscall names match those being used by newlib
case "${target}" in
*-*-cygwin*)
;;
a29k-amd-udi)
;;
arc-*-*)
;;
arm-*-pe)
;;
arm-*-*)
;;
strongarm-*-*)
;;
d10v*)
;;
h8300*-*-*)
;;
h8500-*-*)
;;
i[3456]86-*-sco*)
;;
m32r-*-*)
;;
mn10?00-*-*)
;;
powerpcle-*-pe)
;;
sh*-*-*)
;;
sparc-sun-sunos*)
;;
sparc64-*-*)
;;
thumb-*-pe)
;;
thumb-*-*)
;;
v850-*-*)
;;
v850e-*-*)
;;
v850ea-*-*)
;;
w65-*-*)
;;
xstormy16-*-*)
;;
z8k-*-*)
;;
*)
AC_DEFINE(MISSING_SYSCALL_NAMES)
;;
esac
dnl Make sure we know if elf format used
case "${target}" in
*-*-elf)
AC_DEFINE(HAVE_ELF)
AC_CACHE_CHECK(for .previous assembler directive,
libc_cv_asm_previous_directive, [dnl
libc_cv_asm_previous_directive=no
cat > conftest.s <<EOF
.section foo_section
.previous
EOF
if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s 1>&AC_FD_CC); then
libc_cv_asm_previous_directive=yes
AC_DEFINE(HAVE_ASM_PREVIOUS_DIRECTIVE)
fi
rm -f conftest*])
AC_CACHE_CHECK(for .popsection assembler directive,
libc_cv_asm_popsection_directive, [dnl
libc_cv_asm_popsection_directive=no
cat > conftest.s <<EOF
.pushsection foo_section
.popsection
EOF
if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s 1>&AC_FD_CC); then
libc_cv_asm_popsection_directive=yes
AC_DEFINE(HAVE_ASM_POPSECTION_DIRECTIVE)
fi
rm -f conftest*])
AC_CACHE_CHECK(for section attributes,
libc_cv_section_attributes, [dnl
libc_cv_section_attributes=no
cat > conftest.c <<EOF
int secttest __attribute__ ((section (".gnu.warning.secttest"))) = 10;
int main() {}
EOF
if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.c 1>&AC_FD_CC); then
libc_cv_section_attributes=yes
AC_DEFINE(HAVE_SECTION_ATTRIBUTES)
fi
rm -f conftest*])
;;
esac
AC_CACHE_CHECK(for symbol prefix, libc_symbol_prefix, [dnl
cat > conftest.c <<\EOF
foo () { }
EOF
dnl
libc_symbol_prefix=none
if AC_TRY_COMMAND([${CC-cc} -S conftest.c -o - | fgrep "\$foo" > /dev/null]);
then
libc_symbol_prefix='$'
else
if AC_TRY_COMMAND([${CC-cc} -S conftest.c -o - | fgrep "_foo" > /dev/null]);
then
libc_symbol_prefix=_
fi
fi
rm -f conftest* ])
if test $libc_symbol_prefix != none; then
AC_DEFINE_UNQUOTED(__SYMBOL_PREFIX, "$libc_symbol_prefix")
else
AC_DEFINE(__SYMBOL_PREFIX, "")
fi
LIB_AC_PROG_CC
AS=${AS-as}
AC_SUBST(AS)
AR=${AR-ar}
AC_SUBST(AR)
LD=${LD-ld}
AC_SUBST(LD)
AC_PROG_RANLIB
host_makefile_frag=${srcdir}/../config/default.mh
dnl We have to assign the same value to other variables because autoconf
dnl doesn't provide a mechanism to substitute a replacement keyword with
dnl arbitrary data or pathnames.
dnl
host_makefile_frag_path=$host_makefile_frag
AC_SUBST(host_makefile_frag_path)
AC_SUBST_FILE(host_makefile_frag)
AC_OUTPUT(Makefile,
ac_file=Makefile . ${libgloss_topdir}/config-ml.in,
srcdir=${srcdir}
target=${target}
ac_configure_args="${ac_configure_args} --enable-multilib"
CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
libgloss_topdir=${libgloss_topdir}
)
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