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'
122 *-*-darwin*) is_darwin=yes; GOOS=darwin ;;
123 *-*-freebsd*) is_freebsd=yes; GOOS=freebsd ;;
124 *-*-linux*) is_linux=yes; GOOS=linux ;;
125 *-*-rtems*) is_rtems=yes; GOOS=rtems ;;
126 *-*-solaris2*) is_solaris=yes; GOOS=solaris ;;
128 AM_CONDITIONAL(LIBGO_IS_DARWIN, test $is_darwin = yes)
129 AM_CONDITIONAL(LIBGO_IS_FREEBSD, test $is_freebsd = yes)
130 AM_CONDITIONAL(LIBGO_IS_LINUX, test $is_linux = yes)
131 AM_CONDITIONAL(LIBGO_IS_RTEMS, test $is_rtems = yes)
132 AM_CONDITIONAL(LIBGO_IS_SOLARIS, test $is_solaris = yes)
135 dnl N.B. Keep in sync with gcc/testsuite/go.test/go-test.exp (go-set-goarch).
144 i[34567]86-*-* | x86_64-*-*)
150 [is_386=yes], [is_x86_64=yes])
151 if test "$is_386" = "yes"; then
159 arm*-*-* | strongarm*-*-* | ep9312*-*-* | xscale-*-*)
165 #if defined(__sparcv9) || defined(__arch64__)
168 [is_sparc=yes], [is_sparc64=yes])
169 if test "$is_sparc" = "yes"; then
178 AM_CONDITIONAL(LIBGO_IS_386, test $is_386 = yes)
179 AM_CONDITIONAL(LIBGO_IS_ARM, test $is_arm = yes)
180 AM_CONDITIONAL(LIBGO_IS_SPARC, test $is_sparc = yes)
181 AM_CONDITIONAL(LIBGO_IS_SPARC64, test $is_sparc64 = yes)
182 AM_CONDITIONAL(LIBGO_IS_X86_64, test $is_x86_64 = yes)
185 dnl Use -fsplit-stack when compiling C code if available.
186 AC_CACHE_CHECK([whether -fsplit-stack is supported],
187 [libgo_cv_c_split_stack_supported],
189 CFLAGS="$CFLAGS -fsplit-stack"
190 AC_COMPILE_IFELSE([[int i;]],
191 [libgo_cv_c_split_stack_supported=yes],
192 [libgo_cv_c_split_stack_supported=no])
193 CFLAGS=$CFLAGS_hold])
194 if test "$libgo_cv_c_split_stack_supported" = yes; then
195 SPLIT_STACK=-fsplit-stack
196 AC_DEFINE(USING_SPLIT_STACK, 1,
197 [Define if the compiler supports -fsplit-stack])
201 AC_SUBST(SPLIT_STACK)
202 AM_CONDITIONAL(USING_SPLIT_STACK,
203 test "$libgo_cv_c_split_stack_supported" = yes)
205 dnl Check whether the linker does stack munging when calling from
206 dnl split-stack into non-split-stack code. We check this by looking
207 dnl at the --help output. FIXME: This is only half right: it's
208 dnl possible for the linker to support this for some targets but not
210 AC_CACHE_CHECK([whether linker supports split stack],
211 [libgo_cv_c_linker_supports_split_stack],
212 libgo_cv_c_linker_supports_split_stack=no
213 if $LD --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then
214 libgo_cv_c_linker_supports_split_stack=yes
216 if test "$libgo_cv_c_linker_supports_split_stack" = yes; then
217 AC_DEFINE(LINKER_SUPPORTS_SPLIT_STACK, 1,
218 [Define if the linker support split stack adjustments])
221 dnl Test for the -lm library.
223 AC_CHECK_LIB([m], [sqrt], MATH_LIBS=-lm)
226 dnl Test for -lsocket and -lnsl. Copied from libjava/configure.ac.
227 AC_CACHE_CHECK([for socket libraries], libgo_cv_lib_sockets,
228 [libgo_cv_lib_sockets=
230 AC_CHECK_FUNC(connect, libgo_check_socket=no, libgo_check_socket=yes)
231 if test "$libgo_check_socket" = "yes"; then
232 unset ac_cv_func_connect
233 AC_CHECK_LIB(socket, main, libgo_cv_lib_sockets="-lsocket",
234 libgo_check_both=yes)
236 if test "$libgo_check_both" = "yes"; then
238 LIBS="$LIBS -lsocket -lnsl"
239 unset ac_cv_func_accept
240 AC_CHECK_FUNC(accept,
242 libgo_cv_lib_sockets="-lsocket -lnsl"])
243 unset ac_cv_func_accept
246 unset ac_cv_func_gethostbyname
247 libgo_old_libs="$LIBS"
248 AC_CHECK_FUNC(gethostbyname, ,
249 [AC_CHECK_LIB(nsl, main,
250 [libgo_cv_lib_sockets="$libgo_cv_lib_sockets -lnsl"])])
251 unset ac_cv_func_gethostbyname
254 NET_LIBS="$libgo_cv_lib_sockets"
257 dnl Test whether the compiler supports the -pthread option.
258 AC_CACHE_CHECK([whether -pthread is supported],
259 [libgo_cv_lib_pthread],
261 CFLAGS="$CFLAGS -pthread"
262 AC_COMPILE_IFELSE([[int i;]],
263 [libgo_cv_lib_pthread=yes],
264 [libgo_cv_lib_pthread=no])
265 CFLAGS=$CFLAGS_hold])
267 if test "$libgo_cv_lib_pthread" = yes; then
268 PTHREAD_CFLAGS=-pthread
270 AC_SUBST(PTHREAD_CFLAGS)
272 dnl Test for the -lpthread library.
274 AC_CHECK_LIB([pthread], [pthread_create], PTHREAD_LIBS=-lpthread)
275 AC_SUBST(PTHREAD_LIBS)
279 GCC_CHECK_UNWIND_GETIPINFO
281 AC_CHECK_HEADERS(sys/mman.h syscall.h sys/epoll.h sys/ptrace.h sys/user.h sys/utsname.h)
282 AM_CONDITIONAL(HAVE_SYS_MMAN_H, test "$ac_cv_header_sys_mman_h" = yes)
283 AC_CHECK_FUNCS(srandom random strsignal)
285 dnl For x86 we want to use the -minline-all-stringops option to avoid
286 dnl forcing a stack split when calling memcpy and friends.
287 AC_CACHE_CHECK([whether compiler supports -minline-all-stringops],
288 [libgo_cv_c_stringops],
290 CFLAGS="$CFLAGS -minline-all-stringops"
291 AC_COMPILE_IFELSE([int i;],
292 [libgo_cv_c_stringops=yes],
293 [libgo_cv_c_stringops=no])
294 CFLAGS=$CFLAGS_hold])
296 if test "$libgo_cv_c_stringops" = yes; then
297 STRINGOPS_FLAG=-minline-all-stringops
299 AC_SUBST(STRINGOPS_FLAG)
302 CFLAGS="$CFLAGS -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE"
303 AC_CHECK_TYPES(off64_t)
308 if test ${multilib} = yes; then
309 multilib_arg="--enable-multilib"
314 AC_CONFIG_FILES(Makefile testsuite/Makefile)
316 AC_CONFIG_COMMANDS([default],
317 [if test -n "$CONFIG_FILES"; then
318 # Multilibs need MULTISUBDIR defined correctly in certain makefiles so
319 # that multilib installs will end up installed in the correct place.
320 # The testsuite needs it for multilib-aware ABI baseline files.
321 # To work around this not being passed down from config-ml.in ->
322 # srcdir/Makefile.am -> srcdir/{src,libsupc++,...}/Makefile.am, manually
323 # append it here. Only modify Makefiles that have just been created.
325 # Also, get rid of this simulated-VPATH thing that automake does.
327 s!`test -f '$<' || echo '$(srcdir)/'`!!
329 for i in $SUBDIRS; do
330 case $CONFIG_FILES in
332 #echo "Adding MULTISUBDIR to $i/Makefile"
333 sed -f vpsed $i/Makefile > tmp
334 grep '^MULTISUBDIR =' Makefile >> tmp
343 # Variables needed in config.status (file generation) which aren't already
344 # passed by autoconf.