1 dnl Process this file with autoconf to produce a configure script.
3 dnl Copyright (C) 2006-2017 Free Software Foundation, Inc.
5 dnl This file is free software; you can redistribute it and/or modify
6 dnl it under the terms of the GNU General Public License as published by
7 dnl the Free Software Foundation; either version 3 of the License, or
8 dnl (at your option) any later version.
10 dnl This program is distributed in the hope that it will be useful,
11 dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
12 dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 dnl GNU General Public License for more details.
15 dnl You should have received a copy of the GNU General Public License
16 dnl along with this program; see the file COPYING3. If not see
17 dnl <http://www.gnu.org/licenses/>.
23 AC_CONFIG_SRCDIR(gold.cc)
27 AM_INIT_AUTOMAKE([no-dist parallel-tests])
29 AM_CONFIG_HEADER(config.h:config.in)
32 AH_VERBATIM([00_CONFIG_H_CHECK],
33 [/* Check that config.h is #included before system headers
34 (this works only for glibc, but that should be enough). */
35 #if defined(__GLIBC__) && !defined(__FreeBSD_kernel__) && !defined(__CONFIG_H__)
36 # error config.h must be #included before system headers
38 #define __CONFIG_H__ 1])
41 [ --with-sysroot[=DIR] search for usr/lib et al within DIR],
42 [sysroot=$withval], [sysroot=no])
44 if test "$sysroot" = "yes"; then
45 sysroot='${exec_prefix}/${target_alias}/sys-root'
46 elif test "$sysroot" = "no"; then
51 if test -n "$sysroot"; then
53 "${prefix}" | "${prefix}/"* | \
54 "${exec_prefix}" | "${exec_prefix}/"* | \
55 '${prefix}' | '${prefix}/'*| \
56 '${exec_prefix}' | '${exec_prefix}/'*)
62 AC_DEFINE_UNQUOTED(TARGET_SYSTEM_ROOT, "$sysroot",
63 [System root for target files])
64 AC_DEFINE_UNQUOTED(TARGET_SYSTEM_ROOT_RELOCATABLE, $sysroot_relocatable,
65 [Whether the system root can be relocated])
67 dnl "install_as_default" is true if the linker to be installed as the
68 dnl default linker, ld.
69 dnl "installed_linker" is the installed gold linker name.
71 installed_linker=ld.gold
73 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
74 [case "${enableval}" in
76 install_as_default=yes
79 if test x${enable_ld} = xno; then
80 install_as_default=yes
84 [install_as_default=no])
85 AC_SUBST(install_as_default)
86 AC_SUBST(installed_linker)
88 dnl For now threads are a configure time option.
89 AC_ARG_ENABLE([threads],
90 [ --enable-threads multi-threaded linking],
91 [case "${enableval}" in
92 yes | "") threads=yes ;;
97 if test "$threads" = "yes"; then
98 AC_DEFINE(ENABLE_THREADS, 1,
99 [Define to do multi-threaded linking])
101 AM_CONDITIONAL(THREADS, test "$threads" = "yes")
103 AC_ARG_ENABLE([plugins],
104 [ --enable-plugins linker plugins],
105 [case "${enableval}" in
106 yes | "") plugins=yes ;;
111 if test "$plugins" = "yes"; then
112 AC_DEFINE(ENABLE_PLUGINS, 1,
113 [Define to enable linker plugins])
115 AM_CONDITIONAL(PLUGINS, test "$plugins" = "yes")
117 # Decide if -z relro should be enabled in ELF linker by default.
118 ac_default_ld_z_relro=unset
119 # Provide a configure time option to override our default.
121 AS_HELP_STRING([--enable-relro],
122 [enable -z relro in ELF linker by default]),
123 [case "${enableval}" in
124 yes) ac_default_ld_z_relro=1 ;;
125 no) ac_default_ld_z_relro=0 ;;
127 if test "${ac_default_ld_z_relro}" = unset; then
128 ac_default_ld_z_relro=1
130 AC_DEFINE_UNQUOTED(DEFAULT_LD_Z_RELRO,
131 $ac_default_ld_z_relro,
132 [Define to 1 if you want to enable -z relro in ELF linker by default.])
134 AC_ARG_ENABLE([targets],
135 [ --enable-targets alternative target configurations],
136 [case "${enableval}" in
138 AC_MSG_ERROR([--enable-targets option must specify target names or 'all'])
144 enable_targets=$enableval
147 [# For now, enable all targets by default
151 # Canonicalize the enabled targets.
152 if test -n "$enable_targets"; then
153 for targ in `echo $enable_targets | sed -e 's/,/ /g'`; do
154 result=`$ac_config_sub $targ 2>/dev/null`
155 if test -n "$result"; then
156 canon_targets="$canon_targets $result"
158 # Permit unrecognized target names, like "all".
159 canon_targets="$canon_targets $targ"
164 # Decide which "--hash-style" to use by default
165 # Provide a configure time option to override our default.
166 AC_ARG_ENABLE([default-hash-style],
167 AS_HELP_STRING([--enable-default-hash-style={sysv,gnu,both}],
168 [use this default hash style]),
169 [case "${enable_default_hash_style}" in
170 sysv | gnu | both) ;;
171 *) AC_MSG_ERROR([bad value ${enable_default_hash_style} for enable-default-hash-style option]) ;;
174 # Enable gnu hash only on GNU targets, but not mips
175 mips*-*-*) enable_default_hash_style=sysv ;;
176 *-*-gnu* | *-*-linux* | *-*-nacl*) enable_default_hash_style=both ;;
177 *) enable_default_hash_style=sysv ;;
180 AC_DEFINE_UNQUOTED([DEFAULT_HASH_STYLE],
181 ["${enable_default_hash_style}"],
182 [Set the default --hash-style value])
184 # See which specific instantiations we need.
190 default_osabi=ELFOSABI_NONE
195 for targ in $target $canon_targets; do
196 if test "$targ" = "all"; then
203 . ${srcdir}/configure.tgt
205 if test "$targ_obj" = "UNKNOWN"; then
206 AC_MSG_ERROR("unsupported target $targ")
208 targetobjs="$targetobjs ${targ_obj}.\$(OBJEXT)"
209 if test "$targ_extra_obj" != ""; then
210 targetobjs="$targetobjs ${targ_extra_obj}.\$(OBJEXT)"
212 if test "$targ_size" = "32" -o "$targ_extra_size" = "32"; then
213 if test "$targ_big_endian" = "true" \
214 -o "$targ_extra_big_endian" = "true"; then
217 if test "$targ_big_endian" = "false" \
218 -o "$targ_extra_big_endian" = "false"; then
222 if test "$targ_size" = "64" -o "$targ_extra_size" = "64"; then
223 if test "$targ_big_endian" = "true" \
224 -o "$targ_extra_big_endian" = "true"; then
227 if test "$targ_big_endian" = "false" \
228 -o "$targ_extra_big_endian" = "false"; then
233 if test "$target" = "$targ"; then
234 default_machine=$targ_machine
235 default_size=$targ_size
236 default_big_endian=$targ_big_endian
237 default_osabi=$targ_osabi
239 AM_CONDITIONAL(DEFAULT_TARGET_AARCH64, test "$targ_obj" = "aarch64")
240 AM_CONDITIONAL(DEFAULT_TARGET_ARM, test "$targ_obj" = "arm")
241 AM_CONDITIONAL(DEFAULT_TARGET_I386, test "$targ_obj" = "i386")
242 AM_CONDITIONAL(DEFAULT_TARGET_POWERPC, test "$targ_obj" = "powerpc")
243 AM_CONDITIONAL(DEFAULT_TARGET_SPARC, test "$targ_obj" = "sparc")
244 AM_CONDITIONAL(DEFAULT_TARGET_S390, test "$targ_obj" = "s390")
247 if test "$targ_obj" = "x86_64"; then
249 x86_64*-linux-gnux32)
258 AM_CONDITIONAL(DEFAULT_TARGET_X86_64, test "$target_x86_64" = "yes")
259 AM_CONDITIONAL(DEFAULT_TARGET_X32, test "$target_x32" = "yes")
260 AM_CONDITIONAL(DEFAULT_TARGET_X86_64_OR_X32,
261 test "$target_x86_64" = "yes" -o "$target_x32" = "yes")
262 AM_CONDITIONAL(DEFAULT_TARGET_TILEGX, test "$targ_obj" = "tilegx")
263 AM_CONDITIONAL(DEFAULT_TARGET_MIPS, test "$targ_obj" = "mips")
264 DEFAULT_TARGET=${targ_obj}
265 AC_SUBST(DEFAULT_TARGET)
271 # Remove any duplicates.
273 for t in $targetobjs; do
281 if test -n "$targ_32_little"; then
282 AC_DEFINE(HAVE_TARGET_32_LITTLE, 1,
283 [Define to support 32-bit little-endian targets])
285 if test -n "$targ_32_big"; then
286 AC_DEFINE(HAVE_TARGET_32_BIG, 1,
287 [Define to support 32-bit big-endian targets])
289 if test -n "$targ_64_little"; then
290 AC_DEFINE(HAVE_TARGET_64_LITTLE, 1,
291 [Define to support 64-bit little-endian targets])
293 if test -n "$targ_64_big"; then
294 AC_DEFINE(HAVE_TARGET_64_BIG, 1,
295 [Define to support 64-bit big-endian targets])
298 if test -n "$all_targets"; then
299 TARGETOBJS='$(ALL_TARGETOBJS)'
301 TARGETOBJS="$targetobjs"
305 AC_DEFINE_UNQUOTED(GOLD_DEFAULT_MACHINE, $default_machine,
306 [Default machine code])
307 AC_DEFINE_UNQUOTED(GOLD_DEFAULT_SIZE, $default_size,
308 [Default size (32 or 64)])
309 AC_DEFINE_UNQUOTED(GOLD_DEFAULT_BIG_ENDIAN, $default_big_endian,
310 [Default big endian (true or false)])
311 AC_DEFINE_UNQUOTED(GOLD_DEFAULT_OSABI, $default_osabi,
312 [Default OSABI code])
314 AC_ARG_WITH(lib-path,
315 [ --with-lib-path=dir1:dir2... set default LIB_PATH],
317 yes) LIB_PATH='"/lib:/usr/lib"' ;;
319 *) LIB_PATH='"'"$withval"'"' ;;
321 [LIB_PATH='"::DEFAULT::"'])
322 AC_DEFINE_UNQUOTED(LIB_PATH, $LIB_PATH,
323 [Default library search path])
324 if test "x$target_alias" = "x" -o "x$host_alias" = "x$target_alias"; then
325 AC_DEFINE(NATIVE_LINKER, 1, [Whether configured as a native linker])
328 AC_CHECK_TOOL(NM, nm)
339 ZW_GNU_GETTEXT_SISTER_DIR
346 AM_CONDITIONAL(NATIVE_LINKER,
347 test "x$target_alias" = "x" -o "x$host_alias" = "x$target_alias")
348 AM_CONDITIONAL(GCC, test "$GCC" = yes)
350 AM_CONDITIONAL(NATIVE_OR_CROSS_LINKER,
351 test "x$target_alias" = "x" -o "x$host_alias" = "x$target_alias" -o "x$host_alias" = "x$build_alias")
353 dnl Test for whether static linking is supported. Some systems do not
354 dnl install static libraries. This only affects the set of tests that
356 AC_CACHE_CHECK([whether static linking works], [gold_cv_lib_static],
357 [LDFLAGS_hold=$LDFLAGS
358 LDFLAGS="$LDFLAGS -static"
360 AC_LANG_PROGRAM([[void f() { }]])],
361 [gold_cv_lib_static=yes], [gold_cv_lib_static=no])
362 LDFLAGS=$LDFLAGS_hold])
363 AM_CONDITIONAL(HAVE_STATIC, test "$gold_cv_lib_static" = "yes")
365 dnl Some architectures do not support taking pointers of functions
366 dnl defined in shared libraries except in -fPIC mode. We need to
367 dnl tell the unittest framework if we're compiling for one of those
368 dnl targets, so it doesn't try to run the tests that do that.
369 AM_CONDITIONAL(FN_PTRS_IN_SO_WITHOUT_PIC, [
378 dnl Test for gcc 4.1 or later. Full support for -mcmodel=medium is
379 dnl only available in gcc 4.1.
380 AC_CACHE_CHECK([for gcc >= 4.1], [gold_cv_prog_gcc41],
382 #if !defined __GNUC__
384 #elif __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 1)
387 ], [gold_cv_prog_gcc41=yes], [gold_cv_prog_gcc41=no])])
389 save_CFLAGS="$CFLAGS"
390 CFLAGS="$CFLAGS -mcmodel=medium"
391 AC_COMPILE_IFELSE([int i;], [have_mcmodel_medium=yes], [have_mcmodel_medium=no])
392 CFLAGS="$save_CFLAGS"
393 dnl Whether we can test -mcmodel=medium.
394 AM_CONDITIONAL(MCMODEL_MEDIUM,
395 [test "$target_cpu" = "x86_64" -a "$have_mcmodel_medium" = "yes" -a "$gold_cv_prog_gcc41" = "yes"])
397 AC_CACHE_CHECK([whether $CC supports -fmerge-constants],
398 [gold_cv_merge_constants], [
399 save_CFLAGS="$CFLAGS"
400 CFLAGS="$CFLAGS -fmerge-constants"
401 AC_COMPILE_IFELSE([const char *s = "foo";],
402 [gold_cv_merge_constants=yes],
403 [gold_cv_merge_constants=no])
404 CFLAGS="$save_CFLAGS"])
405 AC_SUBST([MERGE_CONSTANTS_FLAG])
406 AS_IF([test "$gold_cv_merge_constants" = yes],
407 [MERGE_CONSTANTS_FLAG=-fmerge-constants],
408 [MERGE_CONSTANTS_FLAG=])
410 dnl Test for __thread support.
411 AC_CACHE_CHECK([for thread support], [gold_cv_c_thread],
412 [AC_COMPILE_IFELSE([__thread int i = 1;],
413 [gold_cv_c_thread=yes], [gold_cv_c_thread=no])])
415 AM_CONDITIONAL(TLS, test "$gold_cv_c_thread" = "yes")
417 dnl On GNU/Linux TLS in static programs only works when using glibc
419 AC_CACHE_CHECK([for glibc >= 2.4], [gold_cv_lib_glibc24],
421 #include <features.h>
422 #if !defined __GLIBC__
424 #elif __GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 4)
427 ], [gold_cv_lib_glibc24=yes], [gold_cv_lib_glibc24=no])])
429 AM_CONDITIONAL(STATIC_TLS, test "$gold_cv_lib_glibc24" = "yes")
431 dnl Test for #pragma omp threadprivate
432 AC_CACHE_CHECK([for omp support], [gold_cv_c_threadprivate],
433 [save_CFLAGS="$CFLAGS"
434 CFLAGS="$CFLAGS -fopenmp"
438 #pragma omp threadprivate (i)
439 ], [gold_cv_c_threadprivate=yes], [gold_cv_c_threadprivate=no])
440 CFLAGS="$save_CFLAGS"])
441 if test "$gold_cv_c_threadprivate" = "yes"; then
442 AC_DEFINE(HAVE_OMP_SUPPORT, 1,
443 [Define if compiler supports #pragma omp threadprivate])
445 AM_CONDITIONAL(OMP_SUPPORT, test "$gold_cv_c_threadprivate" = "yes")
447 dnl Test for the -ftls-dialect=gnu2 option.
448 dnl Use -Werror in case of compilers that make unknown -m options warnings.
449 dnl They would pass the test here, but fail in actual use when $WARN_CFLAGS
450 dnl gets set later by default Autoconf magic to include -Werror. (We are
451 dnl assuming here that there is no compiler that groks -mtls-dialect=gnu2
452 dnl but does not grok -Werror.)
453 save_CFLAGS="$CFLAGS"
454 CFLAGS="$CFLAGS -Werror -fpic -mtls-dialect=gnu2"
461 ], [have_tls_gnu2=yes], [have_tls_gnu2=no])
462 CFLAGS="$save_CFLAGS"
463 AM_CONDITIONAL(TLS_GNU2_DIALECT, test "$have_tls_gnu2" = "yes")
465 dnl On GNU/Linux TLS descriptors are supported by the dynamic loader
466 dnl only with glibc 2.9 or later.
467 AC_CACHE_CHECK([for glibc >= 2.9], [gold_cv_lib_glibc29],
469 #include <features.h>
470 #if !defined __GLIBC__
472 #elif __GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 9)
475 ], [gold_cv_lib_glibc29=yes], [gold_cv_lib_glibc29=no])])
477 AM_CONDITIONAL(TLS_DESCRIPTORS, test "$gold_cv_lib_glibc29" = "yes")
479 dnl Test for the -frandom-seed option.
480 AC_CACHE_CHECK([for -frandom-seed support], [gold_cv_c_random_seed],
481 [save_CFLAGS="$CFLAGS"
482 CFLAGS="$CFLAGS -frandom-seed=foo"
483 AC_COMPILE_IFELSE([int i;], [gold_cv_c_random_seed=yes],
484 [gold_cv_c_random_seed=no])
485 CFLAGS="$save_CFLAGS"])
486 if test "$gold_cv_c_random_seed" = "yes"; then
487 # In Makefile, '$@' will be expanded to be the name of the file
488 # being built, providing a unique seed for each file.
489 RANDOM_SEED_CFLAGS=-frandom-seed=\$@
491 AC_SUBST(RANDOM_SEED_CFLAGS)
493 dnl On GNU/Linux ifunc is supported by the dynamic linker in glibc
494 dnl 2.11 or later, and by binutils 2.20.1 or later.
495 AC_CACHE_CHECK([for glibc ifunc support], [gold_cv_lib_glibc_ifunc],
496 [save_LDFLAGS="$LDFLAGS"
497 LDFLAGS="$LDFLAGS -static"
498 AC_LINK_IFELSE([AC_LANG_PROGRAM([[
499 #include <features.h>
500 #if !defined __GLIBC__
502 #elif __GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 11)
507 __asm__(".type invoke, %gnu_indirect_function");
508 typedef void (*funcptr) (void);
509 funcptr dispatch (void) __asm__ ("invoke");
510 funcptr dispatch (void) { return &func; }]],
513 if ${NM} conftest$EXEEXT | grep "__rela\?_iplt_start" >/dev/null 2>&1; then
514 gold_cv_lib_glibc_ifunc=both
516 gold_cv_lib_glibc_ifunc=dyn
517 fi], [gold_cv_lib_glibc_ifunc=no])
518 LDFLAGS="$save_LDFLAGS"])
520 AM_CONDITIONAL(IFUNC, test "$gold_cv_lib_glibc_ifunc" != "no")
521 AM_CONDITIONAL(IFUNC_STATIC, test "$gold_cv_lib_glibc_ifunc" = "both")
525 WARN_CXXFLAGS=`echo ${WARN_CFLAGS} | sed -e 's/-Wstrict-prototypes//' -e 's/-Wmissing-prototypes//' -e 's/-Wshadow//'`
526 AC_SUBST(WARN_CXXFLAGS)
528 AC_ARG_WITH(gold-ldflags,
529 [ --with-gold-ldflags=FLAGS additional link flags for gold],
530 [if test "$withval" = "no" -o "$withval" = "yes"; then
533 GOLD_LDFLAGS=$withval
536 AC_SUBST(GOLD_LDFLAGS)
538 AC_ARG_WITH(gold-ldadd,
539 [ --with-gold-ldadd=LIBS additional libraries for gold],
540 [if test "$withval" = "no" -o "$withval" = "yes"; then
548 dnl Force support for large files by default. This may need to be
549 dnl host dependent. If build == host, we can check getconf LFS_CFLAGS.
550 LFS_CFLAGS="-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64"
553 AC_CHECK_HEADERS(sys/mman.h)
554 AC_CHECK_FUNCS(chsize mmap)
555 AC_REPLACE_FUNCS(pread ftruncate ffsll)
557 AC_CACHE_CHECK([mremap with MREMAP_MAYMOVE], [gold_cv_lib_mremap_maymove],
560 #include <sys/mman.h>
561 void f() { mremap (0, 0, 0, MREMAP_MAYMOVE); }
562 ]])], [gold_cv_lib_mremap_maymove=yes], [gold_cv_lib_mremap_maymove=no])])
563 if test "$gold_cv_lib_mremap_maymove" = "yes"; then
564 AC_DEFINE(HAVE_MREMAP, 1,
565 [Define to 1 if you have the mremap function with MREMAP_MAYMOVE support])
570 # Link in zlib if we can. This allows us to write compressed sections.
573 dnl We have to check these in C, not C++, because autoconf generates
574 dnl tests which have no type information, and current glibc provides
575 dnl multiple declarations of functions like basename when compiling
577 AC_CHECK_DECLS([basename, ffs, asprintf, vasprintf, snprintf, vsnprintf, strverscmp])
579 dnl Check if gcc supports the -gpubnames option.
580 dnl Use -Werror in case of compilers that make unknown -g options warnings.
581 dnl They would pass the test here, but fail in actual use when $WARN_CFLAGS
582 dnl gets set later by default Autoconf magic to include -Werror. (We are
583 dnl assuming here that there is no compiler that groks -gpubnames
584 dnl but does not grok -Werror.)
585 save_CFLAGS="$CFLAGS"
586 CFLAGS="$CFLAGS -Werror -gpubnames"
587 AC_COMPILE_IFELSE([int i;], [have_pubnames=yes], [have_pubnames=no])
588 CFLAGS="$save_CFLAGS"
589 AM_CONDITIONAL(HAVE_PUBNAMES, test "$have_pubnames" = "yes")
591 dnl Check if gcc supports the -fno-use-linker-plugin option.
592 save_CFLAGS="$CFLAGS"
593 CFLAGS="$CFLAGS -Werror -fno-use-linker-plugin"
594 AC_COMPILE_IFELSE([int i;], [have_no_use_linker_plugin=yes], [have_no_use_linker_plugin=no])
595 CFLAGS="$save_CFLAGS"
596 AM_CONDITIONAL(HAVE_NO_USE_LINKER_PLUGIN, test "$have_no_use_linker_plugin" = "yes")
600 AC_CHECK_HEADERS(unordered_set unordered_map)
601 AC_CHECK_HEADERS(tr1/unordered_set tr1/unordered_map)
602 AC_CHECK_HEADERS(ext/hash_map ext/hash_set)
603 AC_CHECK_HEADERS(byteswap.h)
605 dnl When plugins enabled dynamic loader interface is required. Check headers
606 dnl which may provide this interface. Add the necessary library to link.
607 AC_CHECK_HEADERS(windows.h)
608 AC_CHECK_HEADERS(dlfcn.h)
609 AC_SEARCH_LIBS(dlopen, [dl dld])
610 case "$ac_cv_search_dlopen" in
611 no*) DLOPEN_LIBS="";;
612 *) DLOPEN_LIBS="$ac_cv_search_dlopen";;
614 AC_SUBST(DLOPEN_LIBS)
616 AC_CHECK_FUNCS(mallinfo posix_fallocate fallocate readv sysconf times)
617 AC_CHECK_DECLS([basename, ffs, asprintf, vasprintf, snprintf, vsnprintf, strverscmp, strndup, memmem])
619 # Use of ::std::tr1::unordered_map::rehash causes undefined symbols
620 # at link time with some versions of GCC.
621 AC_CACHE_CHECK([whether ::std::tr1::unordered_map::rehash is usable.],
622 [gold_cv_unordered_map_rehash],
623 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[
624 #include <tr1/unordered_map>
625 void bar() { ::std::tr1::unordered_map<int, int> x; x.rehash(10); }
626 ]])], [gold_cv_unordered_map_rehash=yes], [gold_cv_unordered_map_rehash=no])])
627 if test "$gold_cv_unordered_map_rehash" = "yes"; then
628 AC_DEFINE(HAVE_TR1_UNORDERED_MAP_REHASH, 1,
629 [Define if ::std::tr1::unordered_map::rehash is usable])
632 # Use of tr1/unordered_map with off_t as a key is not supported on GCC
633 # 4.1.xx when compiling in 32-bit mode with a 64-bit off_t type.
634 AC_CACHE_CHECK([whether std::tr1::hash<off_t> is defined],
635 [gold_cv_hash_off_t],
636 [CXXFLAGS_hold=$CXXFLAGS
637 CXXFLAGS="$CXXFLAGS $LFS_CFLAGS"
639 #include <sys/types.h>
640 #include <tr1/unordered_map>
641 std::tr1::hash<off_t> h;
643 [gold_cv_hash_off_t=yes],
644 [gold_cv_hash_off_t=no])
645 CXXFLAGS=$CXXFLAGS_hold])
646 if test "$gold_cv_hash_off_t" = "yes"; then
647 AC_DEFINE(HAVE_TR1_HASH_OFF_T, 1,
648 [Define if std::tr1::hash<off_t> is usable])
651 # gcc 4.3.0 doesn't recognize the printf attribute on a template
652 # function. Check for that. This is gcc bug 35546. This test can
653 # probably be removed after the bug has been fixed for a while.
654 AC_CACHE_CHECK([whether we can use attributes with template functions],
655 [gold_cv_template_attribute],
657 template<typename T> extern void foo(const char*, ...)
658 __attribute__ ((__format__ (__printf__, 1, 2)));
659 template<typename T> void foo(const char* format, ...) {}
660 void bar() { foo<int>("%s\n", "foo"); }
661 ], [gold_cv_template_attribute=yes], [gold_cv_template_attribute=no])])
662 if test "$gold_cv_template_attribute" = "yes"; then
663 AC_DEFINE(HAVE_TEMPLATE_ATTRIBUTES, 1,
664 [Define if attributes work on C++ templates])
667 dnl Check if the system has struct stat::st_mtim.
668 AC_CACHE_CHECK([for struct stat::st_mtim.],
669 [gold_cv_stat_st_mtim],
670 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
671 #include <sys/stat.h>
672 long bar() { struct stat s; return (long)(s.st_mtim.tv_sec + s.st_mtim.tv_sec);}
673 ]])], [gold_cv_stat_st_mtim=yes], [gold_cv_stat_st_mtim=no])])
674 if test "$gold_cv_stat_st_mtim" = "yes"; then
675 AC_DEFINE(HAVE_STAT_ST_MTIM, 1,
676 [Define if struct stat has a field st_mtim with timespec for mtime])
681 AC_CHECK_HEADERS(locale.h)
682 AC_CHECK_FUNCS(setlocale)
687 AC_OUTPUT(Makefile testsuite/Makefile po/Makefile.in:po/Make-in)