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|
dnl Process this file with autoconf to produce a configure script.
sinclude(../config/enable.m4)
sinclude(../config/tls.m4)
sinclude(../config/acx.m4)
sinclude(../config/no-executables.m4)
sinclude(../config/override.m4)
AC_PREREQ(2.59)
AC_INIT([GNU C Runtime Library], 1.0,,[libgcc])
AC_CONFIG_SRCDIR([static-object.mk])
AC_ARG_WITH(target-subdir,
[ --with-target-subdir=SUBDIR Configuring in a subdirectory for target])
AC_ARG_WITH(cross-host,
[ --with-cross-host=HOST Configuring with a cross compiler])
AC_ARG_WITH(ld,
[ --with-ld arrange to use the specified ld (full pathname)])
if test "${srcdir}" = "."; then
if test -n "${with_build_subdir}"; then
libgcc_topdir="${srcdir}/../.."
with_target_subdir=
elif test -z "${with_target_subdir}"; then
libgcc_topdir="${srcdir}/.."
else
if test "${with_target_subdir}" != "."; then
libgcc_topdir="${srcdir}/${with_multisrctop}../.."
else
libgcc_topdir="${srcdir}/${with_multisrctop}.."
fi
fi
else
libgcc_topdir="${srcdir}/.."
fi
AC_SUBST(libgcc_topdir)
AC_CONFIG_AUX_DIR($libgcc_topdir)
AC_ARG_ENABLE(shared,
[ --disable-shared don't provide a shared libgcc],
[
case $enable_shared in
yes | no) ;;
*)
enable_shared=no
IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
for pkg in $enableval; do
if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
enable_shared=yes
fi
done
IFS="$ac_save_ifs"
;;
esac
], [enable_shared=yes])
AC_SUBST(enable_shared)
AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
AC_ARG_ENABLE(version-specific-runtime-libs,
[ --enable-version-specific-runtime-libs Specify that runtime libraries should be installed in a compiler-specific directory ],
[case "$enableval" in
yes) version_specific_libs=yes ;;
no) version_specific_libs=no ;;
*) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
esac],
[version_specific_libs=no])
AC_MSG_RESULT($version_specific_libs)
AC_ARG_WITH(slibdir,
[ --with-slibdir=DIR shared libraries in DIR [LIBDIR]],
slibdir="$with_slibdir",
if test "${version_specific_libs}" = yes; then
slibdir='$(libsubdir)'
elif test -n "$with_cross_host" && test x"$with_cross_host" != x"no"; then
slibdir='$(exec_prefix)/$(host_noncanonical)/lib'
else
slibdir='$(libdir)'
fi)
AC_SUBST(slibdir)
AC_PROG_INSTALL
AC_PROG_AWK
# We need awk; bail out if it's missing.
case ${AWK} in
"") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
esac
AC_CANONICAL_HOST
ACX_NONCANONICAL_HOST
GCC_TOPLEV_SUBDIRS
dnl These must be called before AM_PROG_LIBTOOL, because it may want
dnl to call AC_CHECK_PROG.
AC_CHECK_TOOL(AR, ar)
AC_CHECK_TOOL(LIPO, lipo, :)
AC_CHECK_TOOL(NM, nm)
AC_CHECK_TOOL(RANLIB, ranlib, :)
AC_CHECK_TOOL(STRIP, strip, :)
AC_PROG_LN_S
GCC_NO_EXECUTABLES
AC_PROG_CC
AC_PROG_CPP_WERROR
# Check for decimal float support.
AC_CACHE_CHECK([whether decimal floating point is supported], [libgcc_cv_dfp],
[AC_COMPILE_IFELSE([_Decimal32 x;], [libgcc_cv_dfp=yes],
[libgcc_cv_dfp=no])])
decimal_float=$libgcc_cv_dfp
AC_SUBST(decimal_float)
AC_ARG_ENABLE(decimal-float,
[ --enable-decimal-float={no,yes,bid,dpd}
enable decimal float extension to C. Selecting 'bid'
or 'dpd' choses which decimal floating point format
to use],
[
case $enable_decimal_float in
yes | no | bid | dpd) ;;
*) AC_MSG_ERROR(['$enable_decimal_float' is an invalid value for --enable-decimal-float.
Valid choices are 'yes', 'bid', 'dpd', and 'no'.]) ;;
esac
],
[
case $host in
powerpc*-*-linux* | i?86*-*-linux* | x86_64*-*-linux*)
enable_decimal_float=yes
;;
*)
enable_decimal_float=no
;;
esac
])
# x86's use BID format instead of DPD
if test x$enable_decimal_float = xyes; then
case $host in
i?86*-*-linux* | x86_64*-*-linux*)
enable_decimal_float=bid
;;
*)
enable_decimal_float=dpd
;;
esac
fi
AC_SUBST(enable_decimal_float)
# Check for fixed-point support.
AC_CACHE_CHECK([whether fixed-point is supported], [libgcc_cv_fixed_point],
[AC_COMPILE_IFELSE([_Sat _Fract x;], [libgcc_cv_fixed_point=yes],
[libgcc_cv_fixed_point=no])])
fixed_point=$libgcc_cv_fixed_point
AC_SUBST(fixed_point)
# Check 32bit or 64bit for x86.
case ${host} in
i?86*-*-* | x86_64*-*-*)
cat > conftest.c <<EOF
#ifdef __x86_64__
host_address=64
#else
host_address=32
#endif
EOF
eval `${CC-cc} -E conftest.c | grep host_address=`
rm -f conftest.c
;;
esac
# Collect host-machine-specific information.
. ${srcdir}/config.host
# Check if Solaris/x86 linker supports ZERO terminator unwind entries.
# This is after config.host so we can augment tmake_file.
# Link with -nostartfiles -nodefaultlibs since neither are present while
# building libgcc.
case ${host} in
i?86-*-solaris2.1[[0-9]]*)
cat > conftest.s <<EOF
.section .eh_frame,"a",@unwind
.zero 4
.section .jcr,"aw",@progbits
.zero 8
EOF
if AC_TRY_COMMAND(${CC-cc} -shared -nostartfiles -nodefaultlibs -o conftest.so conftest.s 1>&AS_MESSAGE_LOG_FD); then
# configure expects config files in libgcc/config, so need a relative
# path here.
tmake_file="${tmake_file} ../../gcc/config/i386/t-crtstuff"
fi
;;
esac
# Check for visibility support. This is after config.host so that
# we can check for asm_hidden_op.
AC_CACHE_CHECK([for __attribute__((visibility("hidden")))],
libgcc_cv_hidden_visibility_attribute, [
echo 'int __attribute__ ((visibility ("hidden"))) foo (void) { return 1; }' > conftest.c
libgcc_cv_hidden_visibility_attribute=no
if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then
if grep "\\$asm_hidden_op.*foo" conftest.s >/dev/null; then
libgcc_cv_hidden_visibility_attribute=yes
fi
fi
rm -f conftest.*
])
if test $libgcc_cv_hidden_visibility_attribute = yes; then
vis_hide='-fvisibility=hidden -DHIDE_EXPORTS'
else
vis_hide=
fi
AC_SUBST(vis_hide)
# See if we have thread-local storage. We can only test assembler
# sicne link-time and run-time tests require the newly built
# gcc, which can't be used to build executable due to that libgcc
# is yet to be built here.
GCC_CHECK_CC_TLS
set_have_cc_tls=
if test "$enable_tls $gcc_cv_have_cc_tls" = "yes yes"; then
set_have_cc_tls="-DHAVE_CC_TLS"
fi
AC_SUBST(set_have_cc_tls)
# Conditionalize the makefile for this target machine.
tmake_file_=
for f in ${tmake_file}
do
if test -f ${srcdir}/config/$f
then
tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
fi
done
tmake_file="${tmake_file_}"
AC_SUBST(tmake_file)
# Substitute configuration variables
AC_SUBST(extra_parts)
AC_SUBST(asm_hidden_op)
# We need multilib support.
AC_CONFIG_FILES([Makefile])
AC_CONFIG_COMMANDS([default],
[[test -z "$CONFIG_HEADERS" || echo timestamp > stamp-h
if test -n "$CONFIG_FILES"; then
# FIXME: We shouldn't need to set ac_file
ac_file=Makefile
. ${libgcc_topdir}/config-ml.in
fi]],
[[srcdir=${srcdir}
host=${host}
with_target_subdir=${with_target_subdir}
with_multisubdir=${with_multisubdir}
ac_configure_args="--enable-multilib ${ac_configure_args}"
CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
libgcc_topdir=${libgcc_topdir}
CC="${CC}"
]])
AC_OUTPUT
|
