2 # Process this file with autoconf to produce a configure script.
4 AC_INIT(package-unused, version-unused, libsanitizer)
5 AC_CONFIG_SRCDIR([include/sanitizer/common_interface_defs.h])
7 AM_ENABLE_MULTILIB(, ..)
9 AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
10 AC_ARG_ENABLE(version-specific-runtime-libs,
11 [ --enable-version-specific-runtime-libs Specify that runtime libraries should be installed in a compiler-specific directory ],
13 yes) version_specific_libs=yes ;;
14 no) version_specific_libs=no ;;
15 *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
17 [version_specific_libs=no])
18 AC_MSG_RESULT($version_specific_libs)
20 AC_USE_SYSTEM_EXTENSIONS
22 # Do not delete or change the following two lines. For why, see
23 # http://gcc.gnu.org/ml/libstdc++/2003-07/msg00451.html
25 target_alias=${target_alias-$host_alias}
26 AC_SUBST(target_alias)
27 GCC_LIBSTDCXX_RAW_CXX_FLAGS
29 AM_INIT_AUTOMAKE(foreign no-dist)
32 GCC_WITH_TOOLEXECLIBDIR
34 # Calculate toolexeclibdir
35 # Also toolexecdir, though it's only used in toolexeclibdir
36 case ${version_specific_libs} in
38 # Need the gcc compiler version to know where to install libraries
39 # and header files if --enable-version-specific-runtime-libs option
41 toolexecdir='$(libdir)/gcc/$(target_alias)'
42 toolexeclibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)'
45 if test -n "$with_cross_host" &&
46 test x"$with_cross_host" != x"no"; then
47 # Install a library built with a cross compiler in tooldir, not libdir.
48 toolexecdir='$(exec_prefix)/$(target_alias)'
49 case ${with_toolexeclibdir} in
51 toolexeclibdir='$(toolexecdir)/lib'
54 toolexeclibdir=${with_toolexeclibdir}
58 toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
59 toolexeclibdir='$(libdir)'
61 multi_os_directory=`$CC -print-multi-os-directory`
62 case $multi_os_directory in
63 .) ;; # Avoid trailing /.
64 *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
69 AC_SUBST(toolexeclibdir)
71 # Checks for programs.
82 "") AC_MSG_ERROR([can't build without awk]) ;;
85 AC_SUBST(enable_shared)
86 AC_SUBST(enable_static)
88 AM_CONDITIONAL([ENABLE_DARWIN_AT_RPATH], [test x$enable_darwin_at_rpath = xyes])
90 AC_CHECK_SIZEOF([void *])
92 if test "${multilib}" = "yes"; then
93 multilib_arg="--enable-multilib"
98 # Get target configury.
101 unset HWASAN_SUPPORTED
102 . ${srcdir}/configure.tgt
103 AM_CONDITIONAL(TSAN_SUPPORTED, [test "x$TSAN_SUPPORTED" = "xyes"])
104 AM_CONDITIONAL(LSAN_SUPPORTED, [test "x$LSAN_SUPPORTED" = "xyes"])
105 AM_CONDITIONAL(HWASAN_SUPPORTED, [test "x$HWASAN_SUPPORTED" = "xyes"])
107 # Check for functions needed.
108 AC_CHECK_FUNCS(clock_getres clock_gettime clock_settime lstat readlink)
110 # Common libraries that we need to link against for all sanitizer libs.
111 link_sanitizer_common='-lpthread -lm'
113 # At least for glibc, shm_open is in librt. But don't pull that
114 # in if it still doesn't give us the function we want. This
115 # test is copied from libgomp.
116 AC_CHECK_LIB(rt, shm_open,
117 [link_sanitizer_common="-lrt $link_sanitizer_common"])
119 # Do a configure time check for -ldl
120 AC_CHECK_LIB(dl, dlsym,
121 [link_sanitizer_common="-ldl $link_sanitizer_common"])
123 # Set up the set of additional libraries that we need to link against for libasan.
124 link_libasan=$link_sanitizer_common
125 AC_SUBST(link_libasan)
127 # Set up the set of additional libraries that we need to link against for libhwasan.
128 link_libhwasan=$link_sanitizer_common
129 AC_SUBST(link_libhwasan)
131 # Set up the set of additional libraries that we need to link against for libtsan.
132 link_libtsan=$link_sanitizer_common
133 AC_SUBST(link_libtsan)
135 # Set up the set of additional libraries that we need to link against for libubsan.
136 link_libubsan=$link_sanitizer_common
137 AC_SUBST(link_libubsan)
139 # Set up the set of additional libraries that we need to link against for liblsan.
140 link_liblsan=$link_sanitizer_common
141 AC_SUBST(link_liblsan)
144 # At least for glibc, clock_gettime is in librt. But don't pull that
145 # in if it still doesn't give us the function we want. This
146 # test is copied from libgomp.
147 AC_CHECK_LIB(rt, clock_gettime,
148 [link_libasan="-lrt $link_libasan"
149 link_libtsan="-lrt $link_libtsan"
150 # Other sanitizers do not override clock_* API
154 *-*-darwin*) MAC_INTERPOSE=true ; enable_static=no ;;
155 *) MAC_INTERPOSE=false ;;
157 AM_CONDITIONAL(USING_MAC_INTERPOSE, $MAC_INTERPOSE)
159 backtrace_supported=yes
161 AC_MSG_CHECKING([for necessary platform features])
164 # Some old Linux distributions miss required syscalls.
165 sanitizer_supported=no
166 AC_TRY_COMPILE([#include <sys/syscall.h>
167 #include <unistd.h>],[
168 syscall (__NR_gettid);
169 syscall (__NR_futex);
170 syscall (__NR_exit_group);
171 ], [sanitizer_supported=yes])
174 sanitizer_supported=yes
177 AC_MSG_RESULT($sanitizer_supported)
178 AM_CONDITIONAL(SANITIZER_SUPPORTED, test "$sanitizer_supported" = yes)
180 # Test for __sync support.
181 AC_CACHE_CHECK([__sync extensions],
182 [libsanitizer_cv_sys_sync],
183 [if test -n "${with_target_subdir}"; then
184 libsanitizer_cv_sys_sync=yes
187 [AC_LANG_PROGRAM([int i;],
188 [__sync_bool_compare_and_swap (&i, i, i);
189 __sync_lock_test_and_set (&i, 1);
190 __sync_lock_release (&i);])],
191 [libsanitizer_cv_sys_sync=yes],
192 [libsanitizer_cv_sys_sync=no])
194 if test "$libsanitizer_cv_sys_sync" = "yes"; then
195 AC_DEFINE([HAVE_SYNC_FUNCTIONS], 1,
196 [Define to 1 if you have the __sync functions])
199 # Test for __atomic support.
200 AC_CACHE_CHECK([__atomic extensions],
201 [libsanitizer_cv_sys_atomic],
202 [if test -n "${with_target_subdir}"; then
203 libsanitizer_cv_sys_atomic=yes
206 [AC_LANG_PROGRAM([int i;],
207 [__atomic_load_n (&i, __ATOMIC_ACQUIRE);
208 __atomic_store_n (&i, 1, __ATOMIC_RELEASE);])],
209 [libsanitizer_cv_sys_atomic=yes],
210 [libsanitizer_cv_sys_atomic=no])
212 if test "$libsanitizer_cv_sys_atomic" = "yes"; then
213 AC_DEFINE([HAVE_ATOMIC_FUNCTIONS], 1,
214 [Define to 1 if you have the __atomic functions])
217 # Check if assembler supports symbol assignment.
218 AC_CACHE_CHECK([assembler symbol assignment],
219 [libsanitizer_cv_as_sym_assign],
223 [libsanitizer_cv_as_sym_assign=yes],
224 [libsanitizer_cv_as_sym_assign=no])])
225 if test "$libsanitizer_cv_as_sym_assign" = "yes"; then
226 as_sym_assign_defs=-DHAVE_AS_SYM_ASSIGN=1
228 AC_SUBST(AS_SYM_ASSIGN_DEFS, [$as_sym_assign_defs])
230 # The library needs to be able to read the executable itself. Compile
231 # a file to determine the executable format. The awk script
232 # filetype.awk prints out the file type.
233 AC_CACHE_CHECK([output filetype],
234 [libsanitizer_cv_sys_filetype],
237 [AC_LANG_PROGRAM([int i;], [int j;])],
238 [filetype=`${AWK} -f $srcdir/../libbacktrace/filetype.awk conftest.$ac_objext`],
239 [AC_MSG_FAILURE([compiler failed])])
240 libsanitizer_cv_sys_filetype=$filetype])
242 # Match the file type to decide what files to compile.
244 case "$libsanitizer_cv_sys_filetype" in
245 elf*) FORMAT_FILE="elf.lo" ;;
246 *) AC_MSG_WARN([could not determine output file type])
247 FORMAT_FILE="unknown.lo"
248 backtrace_supported=no
251 AC_SUBST(FORMAT_FILE)
255 case "$libsanitizer_cv_sys_filetype" in
259 AC_DEFINE_UNQUOTED([BACKTRACE_ELF_SIZE], [$elfsize], [ELF size: 32 or 64])
261 BACKTRACE_SUPPORTED=0
262 if test "$backtrace_supported" = "yes"; then
263 BACKTRACE_SUPPORTED=1
265 AC_SUBST(BACKTRACE_SUPPORTED)
267 GCC_HEADER_STDINT(gstdint.h)
269 AC_CHECK_HEADERS(sys/mman.h alloca.h)
270 if test "$ac_cv_header_sys_mman_h" = "no"; then
273 if test -n "${with_target_subdir}"; then
274 # When built as a GCC target library, we can't do a link test. We
275 # simply assume that if we have mman.h, we have mmap.
278 AC_CHECK_FUNC(mmap, [have_mmap=yes], [have_mmap=no])
281 if test "$have_mmap" = "no"; then
286 AC_PREPROC_IFELSE([AC_LANG_SOURCE([
287 #include <sys/mman.h>
288 #if !defined(MAP_ANONYMOUS) && !defined(MAP_ANON)
289 #error no MAP_ANONYMOUS
291 ])], [ALLOC_FILE=mmap.lo], [ALLOC_FILE=alloc.lo])
296 BACKTRACE_USES_MALLOC=0
297 if test "$ALLOC_FILE" = "alloc.lo"; then
298 BACKTRACE_USES_MALLOC=1
300 AC_SUBST(BACKTRACE_USES_MALLOC)
302 # Don't care about thread support
303 BACKTRACE_SUPPORTS_THREADS=0
304 AC_SUBST(BACKTRACE_SUPPORTS_THREADS)
306 # Check for dl_iterate_phdr.
307 AC_CHECK_HEADERS(link.h)
308 if test "$ac_cv_header_link_h" = "no"; then
309 have_dl_iterate_phdr=no
311 # When built as a GCC target library, we can't do a link test.
312 AC_EGREP_HEADER([dl_iterate_phdr], [link.h], [have_dl_iterate_phdr=yes],
313 [have_dl_iterate_phdr=no])
315 if test "$have_dl_iterate_phdr" = "yes"; then
316 AC_DEFINE(HAVE_DL_ITERATE_PHDR, 1, [Define if dl_iterate_phdr is available.])
319 # Check for the fcntl function.
320 if test -n "${with_target_subdir}"; then
322 *-*-mingw*) have_fcntl=no ;;
326 AC_CHECK_FUNC(fcntl, [have_fcntl=yes], [have_fcntl=no])
328 if test "$have_fcntl" = "yes"; then
329 AC_DEFINE([HAVE_FCNTL], 1,
330 [Define to 1 if you have the fcntl function])
333 AC_CHECK_DECLS(strnlen)
335 # Check for getexecname function.
336 if test -n "${with_target_subdir}"; then
338 *-*-solaris2*) have_getexecname=yes ;;
339 *) have_getexecname=no ;;
342 AC_CHECK_FUNC(getexecname, [have_getexecname=yes], [have_getexecname=no])
344 if test "$have_getexecname" = "yes"; then
345 AC_DEFINE(HAVE_GETEXECNAME, 1, [Define if getexecname is available.])
348 # Check for rpc/xdr.h
349 AC_CHECK_HEADERS(rpc/xdr.h)
350 if test x"$ac_cv_header_rpc_xdr_h" = xyes; then
351 rpc_defs="$rpc_defs -DHAVE_RPC_XDR_H=1"
353 rpc_defs="$rpc_defs -DHAVE_RPC_XDR_H=0"
356 # Check for tirpc/rpc/xdr.h
357 AC_CHECK_HEADERS(tirpc/rpc/xdr.h)
358 if test x"$ac_cv_header_tirpc_rpc_xdr_h" = xyes; then
359 rpc_defs="$rpc_defs -DHAVE_TIRPC_RPC_XDR_H=1"
361 rpc_defs="$rpc_defs -DHAVE_TIRPC_RPC_XDR_H=0"
364 AC_SUBST([RPC_DEFS], [$rpc_defs])
366 AM_CONDITIONAL(LIBBACKTRACE_SUPPORTED,
367 [test "x${BACKTRACE_SUPPORTED}x${BACKTRACE_USES_MALLOC}" = "x1x0"])
369 AH_BOTTOM([#include "libbacktrace/backtrace-rename.h"])
370 AC_CONFIG_FILES([Makefile libsanitizer.spec libbacktrace/backtrace-supported.h])
371 AC_CONFIG_HEADER(config.h)
373 AC_CONFIG_FILES(AC_FOREACH([DIR], [interception sanitizer_common libbacktrace lsan asan ubsan], [DIR/Makefile ]),
374 [cat > vpsed$$ << \_EOF
375 s!`test -f '$<' || echo '$(srcdir)/'`!!
377 sed -f vpsed$$ $ac_file > tmp$$
380 echo 'MULTISUBDIR =' >> $ac_file
382 . ${multi_basedir}/config-ml.in
383 AS_UNSET([ml_norecursion])
386 if test "x$TSAN_SUPPORTED" = "xyes"; then
387 AC_CONFIG_FILES(AC_FOREACH([DIR], [tsan], [DIR/Makefile ]),
388 [cat > vpsed$$ << \_EOF
389 s!`test -f '$<' || echo '$(srcdir)/'`!!
391 sed -f vpsed$$ $ac_file > tmp$$
394 echo 'MULTISUBDIR =' >> $ac_file
396 . ${multi_basedir}/config-ml.in
397 AS_UNSET([ml_norecursion])
401 if test "x$HWASAN_SUPPORTED" = "xyes"; then
402 AC_CONFIG_FILES(AC_FOREACH([DIR], [hwasan], [DIR/Makefile ]),
403 [cat > vpsed$$ << \_EOF
404 s!`test -f '$<' || echo '$(srcdir)/'`!!
406 sed -f vpsed$$ $ac_file > tmp$$
409 echo 'MULTISUBDIR =' >> $ac_file
411 . ${multi_basedir}/config-ml.in
412 AS_UNSET([ml_norecursion])
416 AC_SUBST([TSAN_TARGET_DEPENDENT_OBJECTS])
417 AC_SUBST([SANITIZER_COMMON_TARGET_DEPENDENT_OBJECTS])
419 AC_ARG_ENABLE([werror],
420 [AS_HELP_STRING([--disable-werror], [disable building with -Werror])])
422 ACX_PROG_CC_WARNING_OPTS([-Wextra -Wall -Wwrite-strings \
423 -Wmissing-format-attribute -Wcast-qual],
425 AS_IF([test "x$enable_werror" != "xno"],
426 [WARN_FLAGS="$WARN_FLAGS -Werror"])
427 AC_SUBST([WARN_FLAGS])
429 # Determine what GCC version number to use in filesystem paths.
432 # Add CET specific flags if Intel CET is enabled.
433 GCC_CET_FLAGS(CET_FLAGS)
435 # Always set -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 to sync with LLVM,
436 # and keep struct *stat* have the same size.
438 mips*-*) FILE64_FLAGS="-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64" ;;
439 *) FILE64_FLAGS="" ;;
442 EXTRA_CFLAGS="$EXTRA_CFLAGS $CET_FLAGS $FILE64_FLAGS"
443 EXTRA_CXXFLAGS="$EXTRA_CXXFLAGS $CET_FLAGS $FILE64_FLAGS"
444 EXTRA_ASFLAGS=$CET_FLAGS
445 AC_SUBST(EXTRA_ASFLAGS)
446 AC_SUBST(EXTRA_CFLAGS)
447 AC_SUBST(EXTRA_CXXFLAGS)