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'
123 *-*-darwin*) is_darwin=yes; GOOS=darwin ;;
124 *-*-freebsd*) is_freebsd=yes; GOOS=freebsd ;;
125 *-*-irix6*) is_irix=yes; GOOS=irix ;;
126 *-*-linux*) is_linux=yes; GOOS=linux ;;
127 *-*-rtems*) is_rtems=yes; GOOS=rtems ;;
128 *-*-solaris2*) is_solaris=yes; GOOS=solaris ;;
130 AM_CONDITIONAL(LIBGO_IS_DARWIN, test $is_darwin = yes)
131 AM_CONDITIONAL(LIBGO_IS_FREEBSD, test $is_freebsd = yes)
132 AM_CONDITIONAL(LIBGO_IS_IRIX, test $is_irix = yes)
133 AM_CONDITIONAL(LIBGO_IS_LINUX, test $is_linux = yes)
134 AM_CONDITIONAL(LIBGO_IS_RTEMS, test $is_rtems = yes)
135 AM_CONDITIONAL(LIBGO_IS_SOLARIS, test $is_solaris = yes)
138 dnl N.B. Keep in sync with gcc/testsuite/go.test/go-test.exp (go-set-goarch).
151 arm*-*-* | strongarm*-*-* | ep9312*-*-* | xscale-*-*)
156 i[34567]86-*-* | x86_64-*-*)
162 [is_386=yes], [is_x86_64=yes])
163 if test "$is_386" = "yes"; then
178 [is_mips=yes], [is_mips64=yes])
179 if test "$is_mips" = "yes"; then
185 rs6000*-*-* | powerpc*-*-*)
190 [is_ppc=yes], [is_ppc64=yes])
191 if test "$is_ppc" = "yes"; then
199 #if defined(__sparcv9) || defined(__arch64__)
202 [is_sparc=yes], [is_sparc64=yes])
203 if test "$is_sparc" = "yes"; then
210 AM_CONDITIONAL(LIBGO_IS_386, test $is_386 = yes)
211 AM_CONDITIONAL(LIBGO_IS_ARM, test $is_arm = yes)
212 AM_CONDITIONAL(LIBGO_IS_M68K, test $is_m68k = yes)
213 AM_CONDITIONAL(LIBGO_IS_MIPS, test $is_mips = yes)
214 AM_CONDITIONAL(LIBGO_IS_MIPS64, test $is_mips64 = yes)
215 AM_CONDITIONAL(LIBGO_IS_PPC, test $is_ppc = yes)
216 AM_CONDITIONAL(LIBGO_IS_PPC64, test $is_ppc64 = yes)
217 AM_CONDITIONAL(LIBGO_IS_SPARC, test $is_sparc = yes)
218 AM_CONDITIONAL(LIBGO_IS_SPARC64, test $is_sparc64 = yes)
219 AM_CONDITIONAL(LIBGO_IS_X86_64, test $is_x86_64 = yes)
222 dnl Some files are only present when needed for specific architectures.
223 GO_SYSCALLS_SYSCALL_OS_ARCH_FILE=
224 if test -f ${srcdir}/syscalls/syscall_${GOOS}_${GOARCH}.go; then
225 GO_SYSCALLS_SYSCALL_OS_ARCH_FILE=syscalls/syscall_${GOOS}_${GOARCH}.go
227 AC_SUBST(GO_SYSCALLS_SYSCALL_OS_ARCH_FILE)
229 GO_DEBUG_PROC_REGS_OS_ARCH_FILE=
230 if test -f ${srcdir}/go/debug/proc/regs_${GOOS}_${GOARCH}.go; then
231 GO_DEBUG_PROC_REGS_OS_ARCH_FILE=go/debug/proc/regs_${GOOS}_${GOARCH}.go
233 AC_SUBST(GO_DEBUG_PROC_REGS_OS_ARCH_FILE)
235 dnl Use -fsplit-stack when compiling C code if available.
236 AC_CACHE_CHECK([whether -fsplit-stack is supported],
237 [libgo_cv_c_split_stack_supported],
239 CFLAGS="$CFLAGS -fsplit-stack"
240 AC_COMPILE_IFELSE([[int i;]],
241 [libgo_cv_c_split_stack_supported=yes],
242 [libgo_cv_c_split_stack_supported=no])
243 CFLAGS=$CFLAGS_hold])
244 if test "$libgo_cv_c_split_stack_supported" = yes; then
245 SPLIT_STACK=-fsplit-stack
246 AC_DEFINE(USING_SPLIT_STACK, 1,
247 [Define if the compiler supports -fsplit-stack])
251 AC_SUBST(SPLIT_STACK)
252 AM_CONDITIONAL(USING_SPLIT_STACK,
253 test "$libgo_cv_c_split_stack_supported" = yes)
255 dnl Check whether the linker does stack munging when calling from
256 dnl split-stack into non-split-stack code. We check this by looking
257 dnl at the --help output. FIXME: This is only half right: it's
258 dnl possible for the linker to support this for some targets but not
260 AC_CACHE_CHECK([whether linker supports split stack],
261 [libgo_cv_c_linker_supports_split_stack],
262 libgo_cv_c_linker_supports_split_stack=no
263 if $LD --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then
264 libgo_cv_c_linker_supports_split_stack=yes
266 if test "$libgo_cv_c_linker_supports_split_stack" = yes; then
267 AC_DEFINE(LINKER_SUPPORTS_SPLIT_STACK, 1,
268 [Define if the linker support split stack adjustments])
271 dnl Test for the -lm library.
273 AC_CHECK_LIB([m], [sqrt], MATH_LIBS=-lm)
276 dnl Test for -lsocket and -lnsl. Copied from libjava/configure.ac.
277 AC_CACHE_CHECK([for socket libraries], libgo_cv_lib_sockets,
278 [libgo_cv_lib_sockets=
280 AC_CHECK_FUNC(connect, libgo_check_socket=no, libgo_check_socket=yes)
281 if test "$libgo_check_socket" = "yes"; then
282 unset ac_cv_func_connect
283 AC_CHECK_LIB(socket, main, libgo_cv_lib_sockets="-lsocket",
284 libgo_check_both=yes)
286 if test "$libgo_check_both" = "yes"; then
288 LIBS="$LIBS -lsocket -lnsl"
289 unset ac_cv_func_accept
290 AC_CHECK_FUNC(accept,
292 libgo_cv_lib_sockets="-lsocket -lnsl"])
293 unset ac_cv_func_accept
296 unset ac_cv_func_gethostbyname
297 libgo_old_libs="$LIBS"
298 AC_CHECK_FUNC(gethostbyname, ,
299 [AC_CHECK_LIB(nsl, main,
300 [libgo_cv_lib_sockets="$libgo_cv_lib_sockets -lnsl"])])
301 unset ac_cv_func_gethostbyname
304 NET_LIBS="$libgo_cv_lib_sockets"
307 dnl Test whether the compiler supports the -pthread option.
308 AC_CACHE_CHECK([whether -pthread is supported],
309 [libgo_cv_lib_pthread],
311 CFLAGS="$CFLAGS -pthread"
312 AC_COMPILE_IFELSE([[int i;]],
313 [libgo_cv_lib_pthread=yes],
314 [libgo_cv_lib_pthread=no])
315 CFLAGS=$CFLAGS_hold])
317 if test "$libgo_cv_lib_pthread" = yes; then
318 PTHREAD_CFLAGS=-pthread
320 AC_SUBST(PTHREAD_CFLAGS)
322 dnl Test for the -lpthread library.
324 AC_CHECK_LIB([pthread], [pthread_create], PTHREAD_LIBS=-lpthread)
325 AC_SUBST(PTHREAD_LIBS)
327 dnl Test if -lrt is required for sched_yield.
328 AC_SEARCH_LIBS([sched_yield], [rt])
332 GCC_CHECK_UNWIND_GETIPINFO
334 AC_ARG_ENABLE(sjlj-exceptions,
335 AC_HELP_STRING([--enable-sjlj-exceptions],
336 [force use of builtin_setjmp for exceptions]),
337 [case "$enableval" in
339 *) AC_MSG_ERROR([unknown argument to --enable-sjlj-exceptions]) ;;
341 [enable_sjlj_exceptions=auto])
343 AC_CACHE_CHECK([whether to use setjmp/longjmp exceptions],
344 [libgo_cv_lib_sjlj_exceptions],
351 int i __attribute__ ((cleanup (clean)));
356 CFLAGS="--save-temps -fexceptions"
357 libgo_cv_lib_sjlj_exceptions=unknown
358 AS_IF([ac_fn_c_try_compile],
359 [if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1; then
360 libgo_cv_lib_sjlj_exceptions=yes
361 elif grep _Unwind_Resume conftest.s >/dev/null 2>&1; then
362 libgo_cv_lib_sjlj_exceptions=no
368 if test "$enable_sjlj_exceptions" = "auto"; then
369 enable_sjlj_exceptions=$libgo_cv_lib_sjlj_exceptions
372 case $enable_sjlj_exceptions in
374 AC_DEFINE(LIBGO_SJLJ_EXCEPTIONS, 1,
375 [Define if the C++ compiler is configured for setjmp/longjmp exceptions.])
380 AC_MSG_ERROR([unable to detect exception model])
384 AC_CHECK_HEADERS(sys/mman.h syscall.h sys/epoll.h sys/ptrace.h sys/syscall.h sys/user.h sys/utsname.h)
385 AM_CONDITIONAL(HAVE_SYS_MMAN_H, test "$ac_cv_header_sys_mman_h" = yes)
387 AC_CHECK_FUNCS(srandom random strerror_r strsignal wait4)
388 AM_CONDITIONAL(HAVE_STRERROR_R, test "$ac_cv_func_strerror_r" = yes)
389 AM_CONDITIONAL(HAVE_WAIT4, test "$ac_cv_func_wait4" = yes)
391 AC_CACHE_CHECK([for __sync_bool_compare_and_swap_4],
392 [libgo_cv_func___sync_bool_compare_and_swap_4],
394 typedef unsigned int uint32 __attribute__ ((mode (SI)));
396 int main() { return __sync_bool_compare_and_swap (&i, 0, 1); }
398 [libgo_cv_func___sync_bool_compare_and_swap_4=yes],
399 [libgo_cv_func___sync_bool_compare_and_swap_4=no])])
400 if test "$libgo_cv_func___sync_bool_compare_and_swap_4" = "yes"; then
401 AC_DEFINE(HAVE_SYNC_BOOL_COMPARE_AND_SWAP_4, 1,
402 [Define to 1 if the compiler provides the __sync_bool_compare_and_swap function for uint32])
405 AC_CACHE_CHECK([for __sync_fetch_and_add_4],
406 [libgo_cv_func___sync_fetch_and_add_4],
408 typedef unsigned int uint32 __attribute__ ((mode (SI)));
410 int main() { return __sync_fetch_and_add (&i, 1); }
412 [libgo_cv_func___sync_fetch_and_add_4=yes],
413 [libgo_cv_func___sync_fetch_and_add_4=no])])
414 if test "$libgo_cv_func___sync_fetch_and_add_4" = "yes"; then
415 AC_DEFINE(HAVE_SYNC_FETCH_AND_ADD_4, 1,
416 [Define to 1 if the compiler provides the __sync_fetch_and_add function for uint32])
419 dnl For x86 we want to use the -minline-all-stringops option to avoid
420 dnl forcing a stack split when calling memcpy and friends.
421 AC_CACHE_CHECK([whether compiler supports -minline-all-stringops],
422 [libgo_cv_c_stringops],
424 CFLAGS="$CFLAGS -minline-all-stringops"
425 AC_COMPILE_IFELSE([int i;],
426 [libgo_cv_c_stringops=yes],
427 [libgo_cv_c_stringops=no])
428 CFLAGS=$CFLAGS_hold])
430 if test "$libgo_cv_c_stringops" = yes; then
431 STRINGOPS_FLAG=-minline-all-stringops
433 AC_SUBST(STRINGOPS_FLAG)
436 CFLAGS="$CFLAGS -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE"
437 AC_CHECK_TYPES(off64_t)
442 if test ${multilib} = yes; then
443 multilib_arg="--enable-multilib"
448 AC_CONFIG_FILES(Makefile testsuite/Makefile)
450 AC_CONFIG_COMMANDS([default],
451 [if test -n "$CONFIG_FILES"; then
452 # Multilibs need MULTISUBDIR defined correctly in certain makefiles so
453 # that multilib installs will end up installed in the correct place.
454 # The testsuite needs it for multilib-aware ABI baseline files.
455 # To work around this not being passed down from config-ml.in ->
456 # srcdir/Makefile.am -> srcdir/{src,libsupc++,...}/Makefile.am, manually
457 # append it here. Only modify Makefiles that have just been created.
459 # Also, get rid of this simulated-VPATH thing that automake does.
461 s!`test -f '$<' || echo '$(srcdir)/'`!!
463 for i in $SUBDIRS; do
464 case $CONFIG_FILES in
466 #echo "Adding MULTISUBDIR to $i/Makefile"
467 sed -f vpsed $i/Makefile > tmp
468 grep '^MULTISUBDIR =' Makefile >> tmp
477 # Variables needed in config.status (file generation) which aren't already
478 # passed by autoconf.