1 # configure.ac -- Go library configure script.
3 # Copyright 2009 The Go Authors. All rights reserved.
4 # Use of this source code is governed by a BSD-style
5 # license that can be found in the LICENSE file.
7 # Process this file with autoreconf to produce configure.
10 AC_INIT(package-unused, version-unused,, libgo)
11 AC_CONFIG_SRCDIR(Makefile.am)
12 AC_CONFIG_HEADER(config.h)
15 AC_SUBST(libtool_VERSION)
17 AM_ENABLE_MULTILIB(, ..)
20 target_alias=${target_alias-$host_alias}
22 AM_INIT_AUTOMAKE([1.9.3 no-define foreign -Wall])
23 AH_TEMPLATE(PACKAGE, [Name of package])
24 AH_TEMPLATE(VERSION, [Version number of package])
26 m4_rename([_AC_ARG_VAR_PRECIOUS],[glibgo_PRECIOUS])
27 m4_define([_AC_ARG_VAR_PRECIOUS],[])
30 m4_rename_force([glibgo_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
38 AC_CHECK_TOOL(OBJCOPY, objcopy, missing-objcopy)
42 AC_SUBST(enable_shared)
43 AC_SUBST(enable_static)
45 WARN_FLAGS='-Wall -Wextra -Wwrite-strings -Wcast-qual'
48 dnl FIXME: This should be controlled by --enable-maintainer-mode.
53 glibgo_toolexeclibdir=no
54 glibgo_prefixdir=$prefix
56 AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
57 AC_ARG_ENABLE([version-specific-runtime-libs],
58 AC_HELP_STRING([--enable-version-specific-runtime-libs],
59 [Specify that runtime libraries should be installed in a compiler-specific directory]),
61 yes) version_specific_libs=yes ;;
62 no) version_specific_libs=no ;;
63 *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
65 [version_specific_libs=no])
66 AC_MSG_RESULT($version_specific_libs)
68 # Version-specific runtime libs processing.
69 if test $version_specific_libs = yes; then
70 glibgo_toolexecdir='${libdir}/gcc/${host_alias}'
71 glibgo_toolexeclibdir='${toolexecdir}/${gcc_version}$(MULTISUBDIR)'
74 # Calculate glibgo_toolexecdir, glibgo_toolexeclibdir
75 # Install a library built with a cross compiler in tooldir, not libdir.
76 if test x"$glibgo_toolexecdir" = x"no"; then
77 if test -n "$with_cross_host" &&
78 test x"$with_cross_host" != x"no"; then
79 glibgo_toolexecdir='${exec_prefix}/${host_alias}'
80 glibgo_toolexeclibdir='${toolexecdir}/lib'
82 glibgo_toolexecdir='${libdir}/gcc/${host_alias}'
83 glibgo_toolexeclibdir='${libdir}'
85 multi_os_directory=`$CC -print-multi-os-directory`
86 case $multi_os_directory in
87 .) ;; # Avoid trailing /.
88 *) glibgo_toolexeclibdir=$glibgo_toolexeclibdir/$multi_os_directory ;;
92 AC_SUBST(glibgo_prefixdir)
93 AC_SUBST(glibgo_toolexecdir)
94 AC_SUBST(glibgo_toolexeclibdir)
96 # See if the user wants to configure without libffi. Some
97 # architectures don't support it. FIXME: We should set a default
100 AS_HELP_STRING([--without-libffi],
103 [with_libffi=${with_libffi_default-yes}])
107 if test "$with_libffi" != no; then
108 AC_DEFINE(USE_LIBFFI, 1, [Define if we're to use libffi.])
109 LIBFFI=../libffi/libffi_convenience.la
110 LIBFFIINCS='-I$(top_srcdir)/../libffi/include -I../libffi/include'
120 *-*-darwin*) is_darwin=yes ;;
121 *-*-freebsd*) is_freebsd=yes ;;
122 *-*-linux*) is_linux=yes ;;
123 *-*-rtems*) is_rtems=yes ;;
125 AM_CONDITIONAL(LIBGO_IS_DARWIN, test $is_darwin = yes)
126 AM_CONDITIONAL(LIBGO_IS_FREEBSD, test $is_freebsd = yes)
127 AM_CONDITIONAL(LIBGO_IS_LINUX, test $is_linux = yes)
128 AM_CONDITIONAL(LIBGO_IS_RTEMS, test $is_rtems = yes)
140 if test "$with_multisubdir" = "32"; then
146 arm*-*-* | strongarm*-*-* | ep9312*-*-* | xscale-*-*)
150 AM_CONDITIONAL(LIBGO_IS_386, test $is_386 = yes)
151 AM_CONDITIONAL(LIBGO_IS_X86_64, test $is_x86_64 = yes)
152 AM_CONDITIONAL(LIBGO_IS_ARM, test $is_arm = yes)
154 dnl Use -fsplit-stack when compiling C code if available.
155 AC_CACHE_CHECK([whether -fsplit-stack is supported],
156 [ac_cv_libgo_split_stack_supported],
158 CFLAGS="$CFLAGS -fsplit-stack"
159 AC_COMPILE_IFELSE([[int i;]],
160 [ac_cv_libgo_split_stack_supported=yes],
161 [ac_cv_libgo_split_stack_supported=no])
162 CFLAGS=$CFLAGS_hold])
163 if test "$ac_cv_libgo_split_stack_supported" = yes; then
164 SPLIT_STACK=-fsplit-stack
165 AC_DEFINE(USING_SPLIT_STACK, 1,
166 [Define if the compiler supports -fsplit-stack])
170 AC_SUBST(SPLIT_STACK)
171 AM_CONDITIONAL(USING_SPLIT_STACK,
172 test "$ac_cv_libgo_split_stack_supported" = yes)
174 dnl Check whether the linker does stack munging when calling from
175 dnl split-stack into non-split-stack code. We check this by looking
176 dnl at the --help output. FIXME: This is only half right: it's
177 dnl possible for the linker to support this for some targets but not
179 AC_CACHE_CHECK([whether linker supports split stack],
180 [ac_cv_libgo_linker_supports_split_stack],
181 ac_cv_libgo_linker_supports_split_stack=no
182 if $LD --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then
183 ac_cv_libgo_linker_supports_split_stack=yes
185 if test "$ac_cv_libgo_linker_supports_split_stack" = yes; then
186 AC_DEFINE(LINKER_SUPPORTS_SPLIT_STACK, 1,
187 [Define if the linker support split stack adjustments])
190 dnl Test for the -lm library.
192 AC_CHECK_LIB([m], [sqrt], MATH_LIBS=-lm)
195 dnl Test whether the compiler supports the -pthread option.
196 AC_CACHE_CHECK([whether -pthread is supported],
197 [ac_cv_libgo_pthread_supported],
199 CFLAGS="$CFLAGS -pthread"
200 AC_COMPILE_IFELSE([[int i;]],
201 [ac_cv_libgo_pthread_supported=yes],
202 [ac_cv_libgo_pthread_supported=no])
203 CFLAGS=$CFLAGS_hold])
205 if test "$ac_cv_libgo_pthread_supported" = yes; then
206 PTHREAD_CFLAGS=-pthread
208 AC_SUBST(PTHREAD_CFLAGS)
210 dnl Test for the -lpthread library.
212 AC_CHECK_LIB([pthread], [pthread_create], PTHREAD_LIBS=-lpthread)
213 AC_SUBST(PTHREAD_LIBS)
217 GCC_CHECK_UNWIND_GETIPINFO
219 AC_CHECK_HEADERS(sys/mman.h syscall.h sys/epoll.h sys/ptrace.h sys/user.h sys/utsname.h)
220 AM_CONDITIONAL(HAVE_SYS_MMAN_H, test "$ac_cv_header_sys_mman_h" = yes)
221 AC_CHECK_FUNCS(srandom random strsignal)
223 dnl For x86 we want to use the -minline-all-stringops option to avoid
224 dnl forcing a stack split when calling memcpy and friends.
225 AC_CACHE_CHECK([whether compiler supports -minline-all-stringops],
226 [ac_cv_libgo_compiler_supports_inline_all_stringops],
228 CFLAGS="$CFLAGS -minline-all-stringops"
229 AC_COMPILE_IFELSE([int i;],
230 [ac_cv_libgo_compiler_supports_inline_all_stringops=yes],
231 [ac_cv_libgo_compiler_supports_inline_all_stringops=no])
232 CFLAGS=$CFLAGS_hold])
234 if test "$ac_cv_libgo_compiler_supports_inline_all_stringops" = yes; then
235 STRINGOPS_FLAG=-minline-all-stringops
237 AC_SUBST(STRINGOPS_FLAG)
240 CFLAGS="$CFLAGS -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE"
241 AC_CHECK_TYPES(off64_t)
246 if test ${multilib} = yes; then
247 multilib_arg="--enable-multilib"
252 AC_CONFIG_FILES(Makefile testsuite/Makefile)
254 AC_CONFIG_COMMANDS([default],
255 [if test -n "$CONFIG_FILES"; then
256 # Multilibs need MULTISUBDIR defined correctly in certain makefiles so
257 # that multilib installs will end up installed in the correct place.
258 # The testsuite needs it for multilib-aware ABI baseline files.
259 # To work around this not being passed down from config-ml.in ->
260 # srcdir/Makefile.am -> srcdir/{src,libsupc++,...}/Makefile.am, manually
261 # append it here. Only modify Makefiles that have just been created.
263 # Also, get rid of this simulated-VPATH thing that automake does.
265 s!`test -f '$<' || echo '$(srcdir)/'`!!
267 for i in $SUBDIRS; do
268 case $CONFIG_FILES in
270 #echo "Adding MULTISUBDIR to $i/Makefile"
271 sed -f vpsed $i/Makefile > tmp
272 grep '^MULTISUBDIR =' Makefile >> tmp
281 # Variables needed in config.status (file generation) which aren't already
282 # passed by autoconf.