1 # configure.ac -- Backtrace configure script.
2 # Copyright (C) 2012-2017 Free Software Foundation, Inc.
4 # Redistribution and use in source and binary forms, with or without
5 # modification, are permitted provided that the following conditions are
8 # (1) Redistributions of source code must retain the above copyright
9 # notice, this list of conditions and the following disclaimer.
11 # (2) Redistributions in binary form must reproduce the above copyright
12 # notice, this list of conditions and the following disclaimer in
13 # the documentation and/or other materials provided with the
16 # (3) The name of the author may not be used to
17 # endorse or promote products derived from this software without
18 # specific prior written permission.
20 # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
21 # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
22 # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
23 # DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
24 # INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
25 # (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
26 # SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
28 # STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
29 # IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 # POSSIBILITY OF SUCH DAMAGE.
33 AC_INIT(package-unused, version-unused,, libbacktrace)
34 AC_CONFIG_SRCDIR(backtrace.h)
35 AC_CONFIG_HEADER(config.h)
37 if test -n "${with_target_subdir}"; then
38 AM_ENABLE_MULTILIB(, ..)
42 target_alias=${target_alias-$host_alias}
44 AC_USE_SYSTEM_EXTENSIONS
47 AC_SUBST(libtool_VERSION)
49 # 1.11.1: Require that version of automake.
50 # foreign: Don't require README, INSTALL, NEWS, etc.
51 # no-define: Don't define PACKAGE and VERSION.
52 # no-dependencies: Don't generate automatic dependencies.
53 # (because it breaks when using bootstrap-lean, since some of the
54 # headers are gone at "make install" time).
55 # -Wall: Issue all automake warnings.
56 # -Wno-portability: Don't warn about constructs supported by GNU make.
57 # (because GCC requires GNU make anyhow).
58 AM_INIT_AUTOMAKE([1.11.1 foreign no-dist no-define no-dependencies -Wall -Wno-portability])
62 AC_ARG_WITH(target-subdir,
63 [ --with-target-subdir=SUBDIR Configuring in a subdirectory for target])
65 # We must force CC to /not/ be precious variables; otherwise
66 # the wrong, non-multilib-adjusted value will be used in multilibs.
67 # As a side effect, we have to subst CFLAGS ourselves.
68 m4_rename([_AC_ARG_VAR_PRECIOUS],[backtrace_PRECIOUS])
69 m4_define([_AC_ARG_VAR_PRECIOUS],[])
71 m4_rename_force([backtrace_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
79 "") AC_MSG_ERROR([can't build without awk]) ;;
87 backtrace_supported=yes
89 if test -n "${with_target_subdir}"; then
90 # We are compiling a GCC library. We can assume that the unwind
92 BACKTRACE_FILE="backtrace.lo simple.lo"
94 AC_CHECK_HEADER([unwind.h],
95 [AC_CHECK_FUNC([_Unwind_Backtrace],
96 [BACKTRACE_FILE="backtrace.lo simple.lo"],
97 [BACKTRACE_FILE="nounwind.lo"
98 backtrace_supported=no])],
99 [BACKTRACE_FILE="nounwind.lo"
100 backtrace_supported=no])
102 AC_SUBST(BACKTRACE_FILE)
105 if test -n "${with_target_subdir}"; then
106 EXTRA_FLAGS="-funwind-tables -frandom-seed=\$@"
108 AC_CACHE_CHECK([for -funwind-tables option],
109 [libbacktrace_cv_c_unwind_tables],
110 [CFLAGS_hold="$CFLAGS"
111 CFLAGS="$CFLAGS -funwind-tables"
113 [AC_LANG_PROGRAM([static int f() { return 0; }], [return f();])],
114 [libbacktrace_cv_c_unwind_tables=yes],
115 [libbacktrace_cv_c_unwind_tables=no])
116 CFLAGS="$CFLAGS_hold"])
117 if test "$libbacktrace_cv_c_unwind_tables" = "yes"; then
118 EXTRA_FLAGS=-funwind-tables
120 AC_CACHE_CHECK([for -frandom-seed=string option],
121 [libbacktrace_cv_c_random_seed_string],
122 [CFLAGS_hold="$CFLAGS"
123 CFLAGS="$CFLAGS -frandom-seed=conftest.lo"
125 [AC_LANG_PROGRAM([], [return 0;])],
126 [libbacktrace_cv_c_random_seed_string=yes],
127 [libbacktrace_cv_c_random_seed_string=no])
128 CFLAGS="$CFLAGS_hold"])
129 if test "$libbacktrace_cv_c_random_seed_string" = "yes"; then
130 EXTRA_FLAGS="$EXTRA_FLAGS -frandom-seed=\$@"
133 AC_SUBST(EXTRA_FLAGS)
135 ACX_PROG_CC_WARNING_OPTS([-W -Wall -Wwrite-strings -Wstrict-prototypes \
136 -Wmissing-prototypes -Wold-style-definition \
137 -Wmissing-format-attribute -Wcast-qual],
140 if test -n "${with_target_subdir}"; then
141 WARN_FLAGS="$WARN_FLAGS -Werror"
146 if test -n "${with_target_subdir}"; then
147 GCC_CHECK_UNWIND_GETIPINFO
149 ac_save_CFFLAGS="$CFLAGS"
150 CFLAGS="$CFLAGS -Werror-implicit-function-declaration"
151 AC_MSG_CHECKING([for _Unwind_GetIPInfo])
155 struct _Unwind_Context *context;
156 int ip_before_insn = 0;],
157 [return _Unwind_GetIPInfo (context, &ip_before_insn);])],
158 [have_unwind_getipinfo=yes], [have_unwind_getipinfo=no])
159 CFLAGS="$ac_save_CFLAGS"
160 AC_MSG_RESULT([$have_unwind_getipinfo])
161 if test "$have_unwind_getipinfo" = "yes"; then
162 AC_DEFINE(HAVE_GETIPINFO, 1, [Define if _Unwind_GetIPInfo is available.])
166 # Enable --enable-host-shared.
167 AC_ARG_ENABLE(host-shared,
168 [AS_HELP_STRING([--enable-host-shared],
169 [build host code as shared libraries])],
170 [PIC_FLAG=-fPIC], [PIC_FLAG=])
173 # Test for __sync support.
174 AC_CACHE_CHECK([__sync extensions],
175 [libbacktrace_cv_sys_sync],
176 [if test -n "${with_target_subdir}"; then
178 hppa*-*-hpux*) libbacktrace_cv_sys_sync=no ;;
179 *) libbacktrace_cv_sys_sync=yes ;;
183 [AC_LANG_PROGRAM([int i;],
184 [__sync_bool_compare_and_swap (&i, i, i);
185 __sync_lock_test_and_set (&i, 1);
186 __sync_lock_release (&i);])],
187 [libbacktrace_cv_sys_sync=yes],
188 [libbacktrace_cv_sys_sync=no])
190 BACKTRACE_SUPPORTS_THREADS=0
191 if test "$libbacktrace_cv_sys_sync" = "yes"; then
192 BACKTRACE_SUPPORTS_THREADS=1
193 AC_DEFINE([HAVE_SYNC_FUNCTIONS], 1,
194 [Define to 1 if you have the __sync functions])
196 AC_SUBST(BACKTRACE_SUPPORTS_THREADS)
198 # Test for __atomic support.
199 AC_CACHE_CHECK([__atomic extensions],
200 [libbacktrace_cv_sys_atomic],
201 [if test -n "${with_target_subdir}"; then
202 libbacktrace_cv_sys_atomic=yes
205 [AC_LANG_PROGRAM([int i;],
206 [__atomic_load_n (&i, __ATOMIC_ACQUIRE);
207 __atomic_store_n (&i, 1, __ATOMIC_RELEASE);])],
208 [libbacktrace_cv_sys_atomic=yes],
209 [libbacktrace_cv_sys_atomic=no])
211 if test "$libbacktrace_cv_sys_atomic" = "yes"; then
212 AC_DEFINE([HAVE_ATOMIC_FUNCTIONS], 1,
213 [Define to 1 if you have the __atomic functions])
216 # The library needs to be able to read the executable itself. Compile
217 # a file to determine the executable format. The awk script
218 # filetype.awk prints out the file type.
219 AC_CACHE_CHECK([output filetype],
220 [libbacktrace_cv_sys_filetype],
223 [AC_LANG_PROGRAM([int i;], [int j;])],
224 [filetype=`${AWK} -f $srcdir/filetype.awk conftest.$ac_objext`],
225 [AC_MSG_FAILURE([compiler failed])])
226 libbacktrace_cv_sys_filetype=$filetype])
228 # Match the file type to decide what files to compile.
230 backtrace_supports_data=yes
231 case "$libbacktrace_cv_sys_filetype" in
232 elf*) FORMAT_FILE="elf.lo" ;;
233 pecoff) FORMAT_FILE="pecoff.lo"
234 backtrace_supports_data=no
236 xcoff*) FORMAT_FILE="xcoff.lo"
237 backtrace_supports_data=no
239 *) AC_MSG_WARN([could not determine output file type])
240 FORMAT_FILE="unknown.lo"
241 backtrace_supported=no
244 AC_SUBST(FORMAT_FILE)
248 case "$libbacktrace_cv_sys_filetype" in
253 AC_DEFINE_UNQUOTED([BACKTRACE_ELF_SIZE], [$elfsize], [ELF size: 32 or 64])
257 case "$libbacktrace_cv_sys_filetype" in
258 xcoff32) xcoffsize=32 ;;
259 xcoff64) xcoffsize=64 ;;
262 AC_DEFINE_UNQUOTED([BACKTRACE_XCOFF_SIZE], [$xcoffsize], [XCOFF size: 32 or 64])
264 BACKTRACE_SUPPORTED=0
265 if test "$backtrace_supported" = "yes"; then
266 BACKTRACE_SUPPORTED=1
268 AC_SUBST(BACKTRACE_SUPPORTED)
270 BACKTRACE_SUPPORTS_DATA=0
271 if test "$backtrace_supports_data" = "yes"; then
272 BACKTRACE_SUPPORTS_DATA=1
274 AC_SUBST(BACKTRACE_SUPPORTS_DATA)
276 GCC_HEADER_STDINT(gstdint.h)
278 AC_CHECK_HEADERS(sys/mman.h)
279 if test "$ac_cv_header_sys_mman_h" = "no"; then
282 if test -n "${with_target_subdir}"; then
283 # When built as a GCC target library, we can't do a link test. We
284 # simply assume that if we have mman.h, we have mmap.
287 spu-*-*|*-*-msdosdjgpp)
288 # The SPU does not have mmap, but it has a sys/mman.h header file
289 # containing "mmap_eaddr" and the mmap flags, confusing the test.
290 # DJGPP also has sys/man.h, but no mmap
294 AC_CHECK_FUNC(mmap, [have_mmap=yes], [have_mmap=no])
297 if test "$have_mmap" = "no"; then
303 #include <sys/mman.h>
304 #if !defined(MAP_ANONYMOUS) && !defined(MAP_ANON)
305 #error no MAP_ANONYMOUS
307 ], [ALLOC_FILE=mmap.lo], [ALLOC_FILE=alloc.lo])
312 BACKTRACE_USES_MALLOC=0
313 if test "$ALLOC_FILE" = "alloc.lo"; then
314 BACKTRACE_USES_MALLOC=1
316 AC_SUBST(BACKTRACE_USES_MALLOC)
318 # Check for dl_iterate_phdr.
319 AC_CHECK_HEADERS(link.h)
320 if test "$ac_cv_header_link_h" = "no"; then
321 have_dl_iterate_phdr=no
323 if test -n "${with_target_subdir}"; then
324 # When built as a GCC target library, we can't do a link test.
325 AC_EGREP_HEADER([dl_iterate_phdr], [link.h], [have_dl_iterate_phdr=yes],
326 [have_dl_iterate_phdr=no])
329 # Avoid dl_iterate_phdr on Solaris 10, where it is in the
330 # header file but is only in -ldl.
331 have_dl_iterate_phdr=no ;;
334 AC_CHECK_FUNC([dl_iterate_phdr], [have_dl_iterate_phdr=yes],
335 [have_dl_iterate_phdr=no])
338 if test "$have_dl_iterate_phdr" = "yes"; then
339 AC_DEFINE(HAVE_DL_ITERATE_PHDR, 1, [Define if dl_iterate_phdr is available.])
342 # Check for loadquery.
343 AC_CHECK_HEADERS(sys/ldr.h)
344 if test "$ac_cv_header_sys_ldr_h" = "no"; then
347 if test -n "${with_target_subdir}"; then
348 # When built as a GCC target library, we can't do a link test.
349 AC_EGREP_HEADER([loadquery], [sys/ldr.h], [have_loadquery=yes],
352 AC_CHECK_FUNC([loadquery], [have_loadquery=yes],
356 if test "$have_loadquery" = "yes"; then
357 AC_DEFINE(HAVE_LOADQUERY, 1, [Define if AIX loadquery is available.])
360 # Check for the fcntl function.
361 if test -n "${with_target_subdir}"; then
363 *-*-mingw*) have_fcntl=no ;;
364 spu-*-*) have_fcntl=no ;;
368 AC_CHECK_FUNC(fcntl, [have_fcntl=yes], [have_fcntl=no])
370 if test "$have_fcntl" = "yes"; then
371 AC_DEFINE([HAVE_FCNTL], 1,
372 [Define to 1 if you have the fcntl function])
375 AC_CHECK_DECLS(strnlen)
377 # Check for getexecname function.
378 if test -n "${with_target_subdir}"; then
380 *-*-solaris2*) have_getexecname=yes ;;
381 *) have_getexecname=no ;;
384 AC_CHECK_FUNC(getexecname, [have_getexecname=yes], [have_getexecname=no])
386 if test "$have_getexecname" = "yes"; then
387 AC_DEFINE(HAVE_GETEXECNAME, 1, [Define if getexecname is available.])
390 dnl Test whether the compiler supports the -pthread option.
391 AC_CACHE_CHECK([whether -pthread is supported],
392 [libgo_cv_lib_pthread],
394 CFLAGS="$CFLAGS -pthread"
395 AC_COMPILE_IFELSE([[int i;]],
396 [libgo_cv_lib_pthread=yes],
397 [libgo_cv_lib_pthread=no])
398 CFLAGS=$CFLAGS_hold])
400 if test "$libgo_cv_lib_pthread" = yes; then
401 PTHREAD_CFLAGS=-pthread
403 AC_SUBST(PTHREAD_CFLAGS)
405 AM_CONDITIONAL(HAVE_PTHREAD, test "$libgo_cv_lib_pthread" = yes)
407 AC_CACHE_CHECK([whether tests can run],
408 [libbacktrace_cv_sys_native],
409 [AC_RUN_IFELSE([AC_LANG_PROGRAM([], [return 0;])],
410 [libbacktrace_cv_sys_native=yes],
411 [libbacktrace_cv_sys_native=no],
412 [libbacktrace_cv_sys_native=no])])
413 AM_CONDITIONAL(NATIVE, test "$libbacktrace_cv_sys_native" = "yes")
415 if test "${multilib}" = "yes"; then
416 multilib_arg="--enable-multilib"
421 AC_CONFIG_FILES(Makefile backtrace-supported.h)
423 # We need multilib support, but only if configuring for the target.
424 AC_CONFIG_COMMANDS([default],
425 [if test -n "$CONFIG_FILES"; then
426 if test -n "${with_target_subdir}"; then
427 # Multilibs need MULTISUBDIR defined correctly in certain makefiles so
428 # that multilib installs will end up installed in the correct place.
429 # The testsuite needs it for multilib-aware ABI baseline files.
430 # To work around this not being passed down from config-ml.in ->
431 # srcdir/Makefile.am -> srcdir/{src,libsupc++,...}/Makefile.am, manually
432 # append it here. Only modify Makefiles that have just been created.
434 # Also, get rid of this simulated-VPATH thing that automake does.
436 s!`test -f '$<' || echo '$(srcdir)/'`!!
438 for i in $SUBDIRS; do
439 case $CONFIG_FILES in
441 #echo "Adding MULTISUBDIR to $i/Makefile"
442 sed -f vpsed $i/Makefile > tmp
443 grep '^MULTISUBDIR =' Makefile >> tmp
453 # Variables needed in config.status (file generation) which aren't already
454 # passed by autoconf.