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 CC_FOR_BUILD=${CC_FOR_BUILD:-gcc}
46 AC_SUBST(CC_FOR_BUILD)
48 WARN_FLAGS='-Wall -Wextra -Wwrite-strings -Wcast-qual'
51 dnl FIXME: This should be controlled by --enable-maintainer-mode.
56 glibgo_toolexeclibdir=no
57 glibgo_prefixdir=$prefix
59 AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
60 AC_ARG_ENABLE([version-specific-runtime-libs],
61 AC_HELP_STRING([--enable-version-specific-runtime-libs],
62 [Specify that runtime libraries should be installed in a compiler-specific directory]),
64 yes) version_specific_libs=yes ;;
65 no) version_specific_libs=no ;;
66 *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
68 [version_specific_libs=no])
69 AC_MSG_RESULT($version_specific_libs)
71 # Version-specific runtime libs processing.
72 if test $version_specific_libs = yes; then
73 glibgo_toolexecdir='${libdir}/gcc/${host_alias}'
74 glibgo_toolexeclibdir='${toolexecdir}/${gcc_version}$(MULTISUBDIR)'
77 # Calculate glibgo_toolexecdir, glibgo_toolexeclibdir
78 # Install a library built with a cross compiler in tooldir, not libdir.
79 if test x"$glibgo_toolexecdir" = x"no"; then
80 if test -n "$with_cross_host" &&
81 test x"$with_cross_host" != x"no"; then
82 glibgo_toolexecdir='${exec_prefix}/${host_alias}'
83 glibgo_toolexeclibdir='${toolexecdir}/lib'
85 glibgo_toolexecdir='${libdir}/gcc/${host_alias}'
86 glibgo_toolexeclibdir='${libdir}'
88 multi_os_directory=`$CC -print-multi-os-directory`
89 case $multi_os_directory in
90 .) ;; # Avoid trailing /.
91 *) glibgo_toolexeclibdir=$glibgo_toolexeclibdir/$multi_os_directory ;;
95 AC_SUBST(glibgo_prefixdir)
96 AC_SUBST(glibgo_toolexecdir)
97 AC_SUBST(glibgo_toolexeclibdir)
99 # See if the user wants to configure without libffi. Some
100 # architectures don't support it. FIXME: We should set a default
103 AS_HELP_STRING([--without-libffi],
106 [with_libffi=${with_libffi_default-yes}])
110 if test "$with_libffi" != no; then
111 AC_DEFINE(USE_LIBFFI, 1, [Define if we're to use libffi.])
112 LIBFFI=../libffi/libffi_convenience.la
113 LIBFFIINCS='-I$(top_srcdir)/../libffi/include -I../libffi/include'
126 *-*-darwin*) is_darwin=yes; GOOS=darwin ;;
127 *-*-freebsd*) is_freebsd=yes; GOOS=freebsd ;;
128 *-*-irix6*) is_irix=yes; GOOS=irix ;;
129 *-*-linux*) is_linux=yes; GOOS=linux ;;
130 *-*-rtems*) is_rtems=yes; GOOS=rtems ;;
131 *-*-solaris2*) is_solaris=yes; GOOS=solaris ;;
133 AM_CONDITIONAL(LIBGO_IS_DARWIN, test $is_darwin = yes)
134 AM_CONDITIONAL(LIBGO_IS_FREEBSD, test $is_freebsd = yes)
135 AM_CONDITIONAL(LIBGO_IS_IRIX, test $is_irix = yes)
136 AM_CONDITIONAL(LIBGO_IS_LINUX, test $is_linux = yes)
137 AM_CONDITIONAL(LIBGO_IS_RTEMS, test $is_rtems = yes)
138 AM_CONDITIONAL(LIBGO_IS_SOLARIS, test $is_solaris = yes)
141 dnl N.B. Keep in sync with gcc/testsuite/go.test/go-test.exp (go-set-goarch).
158 arm*-*-* | strongarm*-*-* | ep9312*-*-* | xscale-*-*)
163 i[34567]86-*-* | x86_64-*-*)
169 [is_386=yes], [is_x86_64=yes])
170 if test "$is_386" = "yes"; then
182 #if _MIPS_SIM != _ABIO32
187 #if _MIPS_SIM != _ABIN32
192 #if _MIPS_SIM != _ABI64
197 #if _MIPS_SIM != _ABIO64
201 [AC_MSG_ERROR([unknown MIPS ABI])
202 [mips_abi="n32"]])])])])
204 "o32") GOARCH=mipso32 ;;
205 "n32") GOARCH=mipsn32 ;;
206 "n64") GOARCH=mipsn64 ;;
207 "o64") GOARCH=mipso64 ;;
210 rs6000*-*-* | powerpc*-*-*)
215 [is_ppc=yes], [is_ppc64=yes])
216 if test "$is_ppc" = "yes"; then
224 #if defined(__sparcv9) || defined(__arch64__)
227 [is_sparc=yes], [is_sparc64=yes])
228 if test "$is_sparc" = "yes"; then
235 AM_CONDITIONAL(LIBGO_IS_386, test $is_386 = yes)
236 AM_CONDITIONAL(LIBGO_IS_ALPHA, test $is_alpha = yes)
237 AM_CONDITIONAL(LIBGO_IS_ARM, test $is_arm = yes)
238 AM_CONDITIONAL(LIBGO_IS_M68K, test $is_m68k = yes)
239 AM_CONDITIONAL(LIBGO_IS_MIPS, test $mips_abi != unknown)
240 AM_CONDITIONAL(LIBGO_IS_MIPSO32, test $mips_abi = o32)
241 AM_CONDITIONAL(LIBGO_IS_MIPSN32, test $mips_abi = n32)
242 AM_CONDITIONAL(LIBGO_IS_MIPSN64, test $mips_abi = n64)
243 AM_CONDITIONAL(LIBGO_IS_MIPSO64, test $mips_abi = o64)
244 AM_CONDITIONAL(LIBGO_IS_PPC, test $is_ppc = yes)
245 AM_CONDITIONAL(LIBGO_IS_PPC64, test $is_ppc64 = yes)
246 AM_CONDITIONAL(LIBGO_IS_SPARC, test $is_sparc = yes)
247 AM_CONDITIONAL(LIBGO_IS_SPARC64, test $is_sparc64 = yes)
248 AM_CONDITIONAL(LIBGO_IS_X86_64, test $is_x86_64 = yes)
251 dnl Some files are only present when needed for specific architectures.
252 GO_SYSCALLS_SYSCALL_OS_ARCH_FILE=
253 if test -f ${srcdir}/syscalls/syscall_${GOOS}_${GOARCH}.go; then
254 GO_SYSCALLS_SYSCALL_OS_ARCH_FILE=syscalls/syscall_${GOOS}_${GOARCH}.go
256 AC_SUBST(GO_SYSCALLS_SYSCALL_OS_ARCH_FILE)
258 GO_DEBUG_PROC_REGS_OS_ARCH_FILE=
259 if test -f ${srcdir}/go/debug/proc/regs_${GOOS}_${GOARCH}.go; then
260 GO_DEBUG_PROC_REGS_OS_ARCH_FILE=go/debug/proc/regs_${GOOS}_${GOARCH}.go
262 AC_SUBST(GO_DEBUG_PROC_REGS_OS_ARCH_FILE)
264 dnl Some targets need special flags to build sysinfo.go.
267 # IRIX 6 needs _XOPEN_SOURCE=500 for the XPG5 version of struct
268 # msghdr in <sys/socket.h>.
269 OSCFLAGS='-D_XOPEN_SOURCE=500'
272 # Solaris 8/9 need this so struct msghdr gets the msg_control
273 # etc. fields in <sys/socket.h> (_XPG4_2).
274 OSCFLAGS='-D_XOPEN_SOURCE=500 -D_XOPEN_SOURCE_EXTENDED -D__EXTENSIONS__'
276 *-*-solaris2.1[[01]])
277 # Solaris 10+ needs this so struct msghdr gets the msg_control
278 # etc. fields in <sys/socket.h> (_XPG4_2). _XOPEN_SOURCE=500 as
279 # above doesn't work with C99.
280 OSCFLAGS='-D_XOPEN_SOURCE=600 -D__EXTENSIONS__'
285 dnl Use -fsplit-stack when compiling C code if available.
286 AC_CACHE_CHECK([whether -fsplit-stack is supported],
287 [libgo_cv_c_split_stack_supported],
289 CFLAGS="$CFLAGS -fsplit-stack"
290 AC_COMPILE_IFELSE([[int i;]],
291 [libgo_cv_c_split_stack_supported=yes],
292 [libgo_cv_c_split_stack_supported=no])
293 CFLAGS=$CFLAGS_hold])
294 if test "$libgo_cv_c_split_stack_supported" = yes; then
295 SPLIT_STACK=-fsplit-stack
296 AC_DEFINE(USING_SPLIT_STACK, 1,
297 [Define if the compiler supports -fsplit-stack])
301 AC_SUBST(SPLIT_STACK)
302 AM_CONDITIONAL(USING_SPLIT_STACK,
303 test "$libgo_cv_c_split_stack_supported" = yes)
305 dnl Check whether the linker does stack munging when calling from
306 dnl split-stack into non-split-stack code. We check this by looking
307 dnl at the --help output. FIXME: This is only half right: it's
308 dnl possible for the linker to support this for some targets but not
310 AC_CACHE_CHECK([whether linker supports split stack],
311 [libgo_cv_c_linker_supports_split_stack],
312 libgo_cv_c_linker_supports_split_stack=no
313 if $LD --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then
314 libgo_cv_c_linker_supports_split_stack=yes
316 if test "$libgo_cv_c_linker_supports_split_stack" = yes; then
317 AC_DEFINE(LINKER_SUPPORTS_SPLIT_STACK, 1,
318 [Define if the linker support split stack adjustments])
321 dnl Test for the -lm library.
323 AC_CHECK_LIB([m], [sqrt], MATH_LIBS=-lm)
326 dnl Test for -lsocket and -lnsl. Copied from libjava/configure.ac.
327 AC_CACHE_CHECK([for socket libraries], libgo_cv_lib_sockets,
328 [libgo_cv_lib_sockets=
330 AC_CHECK_FUNC(connect, libgo_check_socket=no, libgo_check_socket=yes)
331 if test "$libgo_check_socket" = "yes"; then
332 unset ac_cv_func_connect
333 AC_CHECK_LIB(socket, main, libgo_cv_lib_sockets="-lsocket",
334 libgo_check_both=yes)
336 if test "$libgo_check_both" = "yes"; then
338 LIBS="$LIBS -lsocket -lnsl"
339 unset ac_cv_func_accept
340 AC_CHECK_FUNC(accept,
342 libgo_cv_lib_sockets="-lsocket -lnsl"])
343 unset ac_cv_func_accept
346 unset ac_cv_func_gethostbyname
347 libgo_old_libs="$LIBS"
348 AC_CHECK_FUNC(gethostbyname, ,
349 [AC_CHECK_LIB(nsl, main,
350 [libgo_cv_lib_sockets="$libgo_cv_lib_sockets -lnsl"])])
351 unset ac_cv_func_gethostbyname
354 NET_LIBS="$libgo_cv_lib_sockets"
357 dnl Test whether the compiler supports the -pthread option.
358 AC_CACHE_CHECK([whether -pthread is supported],
359 [libgo_cv_lib_pthread],
361 CFLAGS="$CFLAGS -pthread"
362 AC_COMPILE_IFELSE([[int i;]],
363 [libgo_cv_lib_pthread=yes],
364 [libgo_cv_lib_pthread=no])
365 CFLAGS=$CFLAGS_hold])
367 if test "$libgo_cv_lib_pthread" = yes; then
368 PTHREAD_CFLAGS=-pthread
370 AC_SUBST(PTHREAD_CFLAGS)
372 dnl Test for the -lpthread library.
374 AC_CHECK_LIB([pthread], [pthread_create], PTHREAD_LIBS=-lpthread)
375 AC_SUBST(PTHREAD_LIBS)
377 dnl Test if -lrt is required for sched_yield.
378 AC_SEARCH_LIBS([sched_yield], [rt])
382 GCC_CHECK_UNWIND_GETIPINFO
384 AC_ARG_ENABLE(sjlj-exceptions,
385 AC_HELP_STRING([--enable-sjlj-exceptions],
386 [force use of builtin_setjmp for exceptions]),
387 [case "$enableval" in
389 *) AC_MSG_ERROR([unknown argument to --enable-sjlj-exceptions]) ;;
391 [enable_sjlj_exceptions=auto])
393 AC_CACHE_CHECK([whether to use setjmp/longjmp exceptions],
394 [libgo_cv_lib_sjlj_exceptions],
401 int i __attribute__ ((cleanup (clean)));
406 CFLAGS="--save-temps -fexceptions"
407 libgo_cv_lib_sjlj_exceptions=unknown
408 AS_IF([ac_fn_c_try_compile],
409 [if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1; then
410 libgo_cv_lib_sjlj_exceptions=yes
411 elif grep _Unwind_Resume conftest.s >/dev/null 2>&1; then
412 libgo_cv_lib_sjlj_exceptions=no
418 if test "$enable_sjlj_exceptions" = "auto"; then
419 enable_sjlj_exceptions=$libgo_cv_lib_sjlj_exceptions
422 case $enable_sjlj_exceptions in
424 AC_DEFINE(LIBGO_SJLJ_EXCEPTIONS, 1,
425 [Define if the C++ compiler is configured for setjmp/longjmp exceptions.])
430 AC_MSG_ERROR([unable to detect exception model])
434 AC_CHECK_HEADERS(sys/mman.h syscall.h sys/epoll.h sys/ptrace.h sys/syscall.h sys/user.h sys/utsname.h sys/select.h)
435 AM_CONDITIONAL(HAVE_SYS_MMAN_H, test "$ac_cv_header_sys_mman_h" = yes)
437 AC_CHECK_FUNCS(srandom random strerror_r strsignal wait4 mincore setenv)
438 AM_CONDITIONAL(HAVE_STRERROR_R, test "$ac_cv_func_strerror_r" = yes)
439 AM_CONDITIONAL(HAVE_WAIT4, test "$ac_cv_func_wait4" = yes)
441 AC_CACHE_CHECK([for __sync_bool_compare_and_swap_4],
442 [libgo_cv_func___sync_bool_compare_and_swap_4],
444 typedef unsigned int uint32 __attribute__ ((mode (SI)));
446 int main() { return __sync_bool_compare_and_swap (&i, 0, 1); }
448 [libgo_cv_func___sync_bool_compare_and_swap_4=yes],
449 [libgo_cv_func___sync_bool_compare_and_swap_4=no])])
450 if test "$libgo_cv_func___sync_bool_compare_and_swap_4" = "yes"; then
451 AC_DEFINE(HAVE_SYNC_BOOL_COMPARE_AND_SWAP_4, 1,
452 [Define to 1 if the compiler provides the __sync_bool_compare_and_swap function for uint32])
455 AC_CACHE_CHECK([for __sync_fetch_and_add_4],
456 [libgo_cv_func___sync_fetch_and_add_4],
458 typedef unsigned int uint32 __attribute__ ((mode (SI)));
460 int main() { return __sync_fetch_and_add (&i, 1); }
462 [libgo_cv_func___sync_fetch_and_add_4=yes],
463 [libgo_cv_func___sync_fetch_and_add_4=no])])
464 if test "$libgo_cv_func___sync_fetch_and_add_4" = "yes"; then
465 AC_DEFINE(HAVE_SYNC_FETCH_AND_ADD_4, 1,
466 [Define to 1 if the compiler provides the __sync_fetch_and_add function for uint32])
469 dnl For x86 we want to use the -minline-all-stringops option to avoid
470 dnl forcing a stack split when calling memcpy and friends.
471 AC_CACHE_CHECK([whether compiler supports -minline-all-stringops],
472 [libgo_cv_c_stringops],
474 CFLAGS="$CFLAGS -minline-all-stringops"
475 AC_COMPILE_IFELSE([int i;],
476 [libgo_cv_c_stringops=yes],
477 [libgo_cv_c_stringops=no])
478 CFLAGS=$CFLAGS_hold])
480 if test "$libgo_cv_c_stringops" = yes; then
481 STRINGOPS_FLAG=-minline-all-stringops
483 AC_SUBST(STRINGOPS_FLAG)
486 CFLAGS="$CFLAGS -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE"
487 AC_CHECK_TYPES(off64_t)
492 if test ${multilib} = yes; then
493 multilib_arg="--enable-multilib"
498 AC_CONFIG_FILES(Makefile testsuite/Makefile)
500 AC_CONFIG_COMMANDS([default],
501 [if test -n "$CONFIG_FILES"; then
502 # Multilibs need MULTISUBDIR defined correctly in certain makefiles so
503 # that multilib installs will end up installed in the correct place.
504 # The testsuite needs it for multilib-aware ABI baseline files.
505 # To work around this not being passed down from config-ml.in ->
506 # srcdir/Makefile.am -> srcdir/{src,libsupc++,...}/Makefile.am, manually
507 # append it here. Only modify Makefiles that have just been created.
509 # Also, get rid of this simulated-VPATH thing that automake does.
511 s!`test -f '$<' || echo '$(srcdir)/'`!!
513 for i in $SUBDIRS; do
514 case $CONFIG_FILES in
516 #echo "Adding MULTISUBDIR to $i/Makefile"
517 sed -f vpsed $i/Makefile > tmp
518 grep '^MULTISUBDIR =' Makefile >> tmp
527 # Variables needed in config.status (file generation) which aren't already
528 # passed by autoconf.