1 dnl Process this file with autoconf to produce a configure script.
3 sinclude(../config/acx.m4)
4 sinclude(../config/no-executables.m4)
7 AC_INIT([GNU C Runtime Library], 1.0,,[libgcc])
8 AC_CONFIG_SRCDIR([static-object.mk])
10 AC_ARG_WITH(target-subdir,
11 [ --with-target-subdir=SUBDIR Configuring in a subdirectory for target])
12 AC_ARG_WITH(cross-host,
13 [ --with-cross-host=HOST Configuring with a cross compiler])
15 [ --with-ld arrange to use the specified ld (full pathname)])
17 if test "${srcdir}" = "."; then
18 if test -n "${with_build_subdir}"; then
19 libgcc_topdir="${srcdir}/../.."
21 elif test -z "${with_target_subdir}"; then
22 libgcc_topdir="${srcdir}/.."
24 if test "${with_target_subdir}" != "."; then
25 libgcc_topdir="${srcdir}/${with_multisrctop}../.."
27 libgcc_topdir="${srcdir}/${with_multisrctop}.."
31 libgcc_topdir="${srcdir}/.."
33 AC_SUBST(libgcc_topdir)
34 AC_CONFIG_AUX_DIR($libgcc_topdir)
37 [ --disable-shared don't provide a shared libgcc],
39 case $enable_shared in
43 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
44 for pkg in $enableval; do
45 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
52 ], [enable_shared=yes])
53 AC_SUBST(enable_shared)
56 [ --with-slibdir=DIR shared libraries in DIR [LIBDIR]],
57 slibdir="$with_slibdir",
58 if test "${enable_version_specific_runtime_libs+set}" = set; then
59 slibdir='$(libsubdir)'
60 elif test "$host" != "$target"; then
61 slibdir='$(build_tooldir)/lib'
70 # We need awk; bail out if it's missing.
72 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
78 dnl These must be called before AM_PROG_LIBTOOL, because it may want
79 dnl to call AC_CHECK_PROG.
81 AC_CHECK_TOOL(LIPO, lipo, :)
83 AC_CHECK_TOOL(RANLIB, ranlib, :)
84 AC_CHECK_TOOL(STRIP, strip, :)
91 # Check for decimal float support.
92 AC_CACHE_CHECK([whether decimal floating point is supported], [libgcc_cv_dfp],
93 [AC_COMPILE_IFELSE([_Decimal32 x;], [libgcc_cv_dfp=yes],
95 decimal_float=$libgcc_cv_dfp
96 AC_SUBST(decimal_float)
98 # Collect host-machine-specific information.
99 . ${srcdir}/config.host
101 # Check for visibility support. This is after config.host so that
102 # we can check for asm_hidden_op.
103 AC_CACHE_CHECK([for __attribute__((visibility("hidden")))],
104 libgcc_cv_hidden_visibility_attribute, [
105 echo 'int __attribute__ ((visibility ("hidden"))) foo (void) { return 1; }' > conftest.c
106 libgcc_cv_hidden_visibility_attribute=no
107 if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then
108 if grep "\\$asm_hidden_op.*foo" conftest.s >/dev/null; then
109 libgcc_cv_hidden_visibility_attribute=yes
115 if test $libgcc_cv_hidden_visibility_attribute = yes; then
116 vis_hide='-fvisibility=hidden -DHIDE_EXPORTS'
122 # Conditionalize the makefile for this target machine.
124 for f in ${tmake_file}
126 if test -f ${srcdir}/config/$f
128 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
131 tmake_file="${tmake_file_}"
134 # Substitute configuration variables
135 AC_SUBST(extra_parts)
136 AC_SUBST(asm_hidden_op)
138 # We need multilib support.
139 AC_CONFIG_FILES([Makefile])
140 AC_CONFIG_COMMANDS([default],
141 [[test -z "$CONFIG_HEADERS" || echo timestamp > stamp-h
142 if test -n "$CONFIG_FILES"; then
143 # FIXME: We shouldn't need to set ac_file
145 . ${libgcc_topdir}/config-ml.in
150 with_target_subdir=${with_target_subdir}
151 with_multisubdir=${with_multisubdir}
152 ac_configure_args="--enable-multilib ${ac_configure_args}"
153 CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
154 libgcc_topdir=${libgcc_topdir}