2 # Process this file with autoconf to generate a configuration script.
4 # Copyright (C) 1997-2017 Free Software Foundation, Inc.
6 #This file is part of GCC.
8 #GCC is free software; you can redistribute it and/or modify it under
9 #the terms of the GNU General Public License as published by the Free
10 #Software Foundation; either version 3, or (at your option) any later
13 #GCC is distributed in the hope that it will be useful, but WITHOUT
14 #ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 #FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
18 #You should have received a copy of the GNU General Public License
19 #along with GCC; see the file COPYING3. If not see
20 #<http://www.gnu.org/licenses/>.
22 # --------------------------------
23 # Initialization and sanity checks
24 # --------------------------------
28 AC_CONFIG_SRCDIR(tree.c)
29 AC_CONFIG_HEADER(auto-host.h:config.in)
31 gcc_version=`cat $srcdir/BASE-VER`
33 # Determine the host, build, and target systems
38 # Determine the noncanonical host name, for Ada.
41 # Determine the noncanonical target name, for directory use.
42 ACX_NONCANONICAL_TARGET
44 # Used for constructing correct paths for offload compilers.
45 real_target_noncanonical=${target_noncanonical}
48 # Determine the target- and build-specific subdirectories
51 # Set program_transform_name
54 # Check for bogus environment variables.
55 # Test if LIBRARY_PATH contains the notation for the current directory
56 # since this would lead to problems installing/building glibc.
57 # LIBRARY_PATH contains the current directory if one of the following
59 # - one of the terminals (":" and ";") is the first or last sign
60 # - two terminals occur directly after each other
61 # - the path contains an element with a dot in it
62 AC_MSG_CHECKING(LIBRARY_PATH variable)
64 case ${LIBRARY_PATH} in
65 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
66 library_path_setting="contains current directory"
69 library_path_setting="ok"
73 AC_MSG_RESULT($library_path_setting)
74 if test "$library_path_setting" != "ok"; then
76 *** LIBRARY_PATH shouldn't contain the current directory when
77 *** building gcc. Please change the environment variable
78 *** and run configure again.])
81 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
82 # since this would lead to problems installing/building glibc.
83 # GCC_EXEC_PREFIX contains the current directory if one of the following
85 # - one of the terminals (":" and ";") is the first or last sign
86 # - two terminals occur directly after each other
87 # - the path contains an element with a dot in it
88 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
90 case ${GCC_EXEC_PREFIX} in
91 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
92 gcc_exec_prefix_setting="contains current directory"
95 gcc_exec_prefix_setting="ok"
99 AC_MSG_RESULT($gcc_exec_prefix_setting)
100 if test "$gcc_exec_prefix_setting" != "ok"; then
102 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
103 *** building gcc. Please change the environment variable
104 *** and run configure again.])
111 # Specify the local prefix
113 AC_ARG_WITH(local-prefix,
114 [AS_HELP_STRING([--with-local-prefix=DIR],
115 [specifies directory to put local include])],
116 [case "${withval}" in
117 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
119 *) local_prefix=$with_local_prefix ;;
122 # Default local prefix if it is empty
123 if test x$local_prefix = x; then
124 local_prefix=/usr/local
127 AC_ARG_WITH([native-system-header-dir],
128 [ --with-native-system-header-dir=dir
129 use dir as the directory to look for standard
130 system header files in. Defaults to /usr/include.],
132 case ${with_native_system_header_dir} in
133 yes|no) AC_MSG_ERROR([bad value ${withval} given for --with-native-system-header-dir]) ;;
134 /* | [[A-Za-z]]:[[\\/]]*) ;;
135 *) AC_MSG_ERROR([--with-native-system-header-dir argument ${withval} must be an absolute directory]) ;;
137 configured_native_system_header_dir="${withval}"
138 ], [configured_native_system_header_dir=])
140 AC_ARG_WITH(build-sysroot,
141 [AS_HELP_STRING([--with-build-sysroot=sysroot],
142 [use sysroot as the system root during the build])],
143 [if test x"$withval" != x ; then
144 SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
146 [SYSROOT_CFLAGS_FOR_TARGET=])
147 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
149 if test "x$prefix" = xNONE; then
150 test_prefix=/usr/local
154 if test "x$exec_prefix" = xNONE; then
155 test_exec_prefix=$test_prefix
157 test_exec_prefix=$exec_prefix
161 [AS_HELP_STRING([[--with-sysroot[=DIR]]],
162 [search for usr/lib, usr/include, et al, within DIR])],
164 case ${with_sysroot} in
166 */) with_sysroot=`echo $with_sysroot | sed 's,/$,,'` ;;
168 case ${with_sysroot} in
169 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
170 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
173 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
174 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
176 case ${TARGET_SYSTEM_ROOT} in
177 "${test_prefix}"|"${test_prefix}/"*|\
178 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
179 '${prefix}'|'${prefix}/'*|\
180 '${exec_prefix}'|'${exec_prefix}/'*)
181 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
182 TARGET_SYSTEM_ROOT_DEFINE="$t"
187 TARGET_SYSTEM_ROOT_DEFINE=
188 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
190 AC_SUBST(TARGET_SYSTEM_ROOT)
191 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
192 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
194 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
195 # passed in by the toplevel make and thus we'd get different behavior
196 # depending on where we built the sources.
198 # Specify the g++ header file directory
199 AC_ARG_WITH(gxx-include-dir,
200 [AS_HELP_STRING([--with-gxx-include-dir=DIR],
201 [specifies directory to put g++ header files])],
202 [case "${withval}" in
203 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
205 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
208 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
209 if test x${gcc_gxx_include_dir} = x; then
210 if test x${enable_version_specific_runtime_libs} = xyes; then
211 gcc_gxx_include_dir='${libsubdir}/include/c++'
213 libstdcxx_incdir='include/c++/$(version)'
214 if test x$host != x$target; then
215 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
217 gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir"
221 gcc_gxx_include_dir_add_sysroot=0
222 if test "${with_sysroot+set}" = set; then
223 gcc_gxx_without_sysroot=`expr "${gcc_gxx_include_dir}" : "${with_sysroot}"'\(.*\)'`
224 if test "${gcc_gxx_without_sysroot}"; then
225 if test x${with_sysroot} != x/; then
226 gcc_gxx_include_dir="${gcc_gxx_without_sysroot}"
228 gcc_gxx_include_dir_add_sysroot=1
232 AC_ARG_WITH(cpp_install_dir,
233 [AC_HELP_STRING([--with-cpp-install-dir=DIR],
234 [install the user visible C preprocessor in DIR
235 (relative to PREFIX) as well as PREFIX/bin])],
236 [if test x$withval = xyes; then
237 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
238 elif test x$withval != xno; then
239 cpp_install_dir=$withval
242 # We would like to our source tree to be readonly. However when releases or
243 # pre-releases are generated, the flex/bison generated files as well as the
244 # various formats of manuals need to be included along with the rest of the
245 # sources. Therefore we have --enable-generated-files-in-srcdir to do
248 AC_MSG_CHECKING([whether to place generated files in the source directory])
249 dnl generated-files-in-srcdir is disabled by default
250 AC_ARG_ENABLE(generated-files-in-srcdir,
251 [AS_HELP_STRING([--enable-generated-files-in-srcdir],
252 [put copies of generated files in source dir
253 intended for creating source tarballs for users
254 without texinfo bison or flex])],
255 generated_files_in_srcdir=$enableval,
256 generated_files_in_srcdir=no)
258 AC_MSG_RESULT($generated_files_in_srcdir)
260 if test "$generated_files_in_srcdir" = "yes"; then
267 # -------------------
268 # Find default linker
269 # -------------------
273 [AS_HELP_STRING([--with-gnu-ld], [arrange to work with GNU ld])],
274 gnu_ld_flag="$with_gnu_ld",
278 *darwin*) ld64_flag=yes;; # Darwin can only use a ld64-compatible linker.
282 # With pre-defined ld
284 [AS_HELP_STRING([--with-ld], [arrange to use the specified ld (full pathname)])],
285 DEFAULT_LINKER="$with_ld")
286 if test x"${DEFAULT_LINKER+set}" = x"set"; then
287 if test ! -x "$DEFAULT_LINKER"; then
288 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
289 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
291 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep ld64- > /dev/null; then
294 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
295 [Define to enable the use of a default linker.])
298 AC_MSG_CHECKING([whether a default linker was specified])
299 if test x"${DEFAULT_LINKER+set}" = x"set"; then
300 if test x"$gnu_ld_flag" = x"no"; then
301 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
303 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
309 # With demangler in GNU ld
310 AC_ARG_WITH(demangler-in-ld,
311 [AS_HELP_STRING([--with-demangler-in-ld], [try to use demangler in GNU ld])],
312 demangler_in_ld="$with_demangler_in_ld",
315 # ----------------------
316 # Find default assembler
317 # ----------------------
321 [AS_HELP_STRING([--with-gnu-as], [arrange to work with GNU as])],
322 gas_flag="$with_gnu_as",
326 [AS_HELP_STRING([--with-as], [arrange to use the specified as (full pathname)])],
327 DEFAULT_ASSEMBLER="$with_as")
328 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
329 if test ! -x "$DEFAULT_ASSEMBLER"; then
330 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
331 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
334 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
335 [Define to enable the use of a default assembler.])
338 AC_MSG_CHECKING([whether a default assembler was specified])
339 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
340 if test x"$gas_flag" = x"no"; then
341 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
343 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
353 # If a non-executable a.out is present (e.g. created by GNU as above even if
354 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
355 # file, even when creating an executable, so an execution test fails.
356 # Remove possible default executable files to avoid this.
358 # FIXME: This really belongs into AC_PROG_CC and can be removed once
359 # Autoconf includes it.
360 rm -f a.out a.exe b.out
362 # Find the native compiler
365 ACX_PROG_GNAT([-I"$srcdir"/ada])
367 # Do configure tests with the C++ compiler, since that's what we build with.
370 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
371 # optimizations to be activated explicitly by the toplevel.
374 *) CFLAGS=`echo "$CFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" `
375 CXXFLAGS=`echo "$CXXFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" ` ;;
380 # Determine PICFLAG for target gnatlib.
381 GCC_PICFLAG_FOR_TARGET
382 AC_SUBST(PICFLAG_FOR_TARGET)
384 # -------------------------
385 # Check C compiler features
386 # -------------------------
388 AC_USE_SYSTEM_EXTENSIONS
394 # sizeof(char) is 1 by definition.
395 AC_CHECK_SIZEOF(void *)
396 AC_CHECK_SIZEOF(short)
398 AC_CHECK_SIZEOF(long)
399 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
401 if test x"$ac_cv_c_uint64_t" = x"no" -o x"$ac_cv_c_int64_t" = x"no"; then
402 AC_MSG_ERROR([uint64_t or int64_t not found])
405 # check what underlying integer type int64_t uses
406 AC_CACHE_CHECK(for int64_t underlying type, ac_cv_int64_t_type, [
407 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
411 template <typename T> struct X { };
413 struct X<long> { typedef long t; };
414 ]], [[X<int64_t>::t x;]])],[ac_cv_int64_t_type=long],[ac_cv_int64_t_type="long long"])])
415 if test "$ac_cv_int64_t_type" = "long"; then
416 AC_DEFINE(INT64_T_IS_LONG, 1,
417 [Define if int64_t uses long as underlying type.])
419 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
423 template <typename T> struct X { };
425 struct X<long long> { typedef long long t; };
426 ]], [[X<int64_t>::t x;]])],[],[AC_MSG_ERROR([error verifying int64_t uses long long])])
429 AC_CACHE_CHECK(for std::swap in <utility>, ac_cv_std_swap_in_utility, [
430 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
432 ]], [[int a, b; std::swap(a,b);]])],[ac_cv_std_swap_in_utility=yes],[ac_cv_std_swap_in_utility=no])])
433 if test $ac_cv_std_swap_in_utility = yes; then
434 AC_DEFINE(HAVE_SWAP_IN_UTILITY, 1,
435 [Define if <utility> defines std::swap.])
438 # Check whether compiler is affected by placement new aliasing bug (PR 29286).
439 # If the host compiler is affected by the bug, and we build with optimization
440 # enabled (which happens e.g. when cross-compiling), the pool allocator may
441 # get miscompiled. Use -fno-strict-aliasing to work around this problem.
442 # Since there is no reliable feature check for the presence of this bug,
443 # we simply use a GCC version number check. (This should never trigger for
444 # stages 2 or 3 of a native bootstrap.)
446 if test "$GCC" = yes; then
447 saved_CXXFLAGS="$CXXFLAGS"
449 # The following test compilation will succeed if and only if $CXX accepts
450 # -fno-strict-aliasing *and* is older than GCC 4.3.
451 CXXFLAGS="$CXXFLAGS -fno-strict-aliasing"
452 AC_MSG_CHECKING([whether $CXX is affected by placement new aliasing bug])
454 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)
455 #error compiler not affected by placement new aliasing bug
458 [AC_MSG_RESULT([yes]); aliasing_flags='-fno-strict-aliasing'],
459 [AC_MSG_RESULT([no])])
461 CXXFLAGS="$saved_CXXFLAGS"
463 AC_SUBST(aliasing_flags)
467 # ---------------------
468 # Warnings and checking
469 # ---------------------
471 # Check $CC warning features (if it's GCC).
472 # We want to use -pedantic, but we don't want warnings about
476 # * C++11 narrowing conversions in { }
477 # So, we only use -pedantic if we can disable those warnings.
479 # In stage 1, disable -Wformat warnings from old GCCs about new % codes
480 AC_ARG_ENABLE(build-format-warnings,
481 AS_HELP_STRING([--disable-build-format-warnings],[don't use -Wformat while building GCC]),
482 [],[enable_build_format_warnings=yes])
483 AS_IF([test $enable_build_format_warnings = no],
484 [wf_opt=-Wno-format],[wf_opt=])
485 ACX_PROG_CXX_WARNING_OPTS(
486 m4_quote(m4_do([-W -Wall -Wno-narrowing -Wwrite-strings ],
487 [-Wcast-qual $wf_opt])), [loose_warn])
488 ACX_PROG_CC_WARNING_OPTS(
489 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])),
491 ACX_PROG_CXX_WARNING_OPTS(
492 m4_quote(m4_do([-Wmissing-format-attribute ],
493 [-Woverloaded-virtual])), [strict_warn])
494 ACX_PROG_CC_WARNING_OPTS(
495 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
496 ACX_PROG_CXX_WARNING_ALMOST_PEDANTIC(
497 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
498 [-Wno-overlength-strings])), [strict_warn])
499 ACX_PROG_CXX_WARNINGS_ARE_ERRORS([manual], [strict_warn])
501 # The above macros do nothing if the compiler is not GCC. However, the
502 # Makefile has more goo to add other flags, so these variables are used
503 # to enable warnings only for GCC.
506 if test "x$GCC" = "xyes"; then
507 warn_cflags='$(GCC_WARN_CFLAGS)'
508 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
510 AC_SUBST(warn_cflags)
511 AC_SUBST(warn_cxxflags)
513 # Disable exceptions and RTTI if building with g++
514 ACX_PROG_CC_WARNING_OPTS(
515 m4_quote(m4_do([-fno-exceptions -fno-rtti -fasynchronous-unwind-tables])),
518 # Enable expensive internal checks
520 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
524 AC_ARG_ENABLE(checking,
525 [AS_HELP_STRING([[--enable-checking[=LIST]]],
526 [enable expensive run-time checks. With LIST,
527 enable only specific categories of checks.
528 Categories are: yes,no,all,none,release.
529 Flags are: assert,df,extra,fold,gc,gcac,gimple,misc,
530 rtlflag,rtl,runtime,tree,valgrind,types])],
531 [ac_checking_flags="${enableval}"],[
532 # Determine the default checks.
533 if test x$is_release = x ; then
534 ac_checking_flags=yes,extra
536 ac_checking_flags=release
538 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
539 for check in release $ac_checking_flags
542 # these set all the flags to specific states
543 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
544 ac_fold_checking= ; ac_gc_checking=1 ; ac_extra_checking= ;
545 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
546 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
547 ac_tree_checking=1 ; ac_valgrind_checking= ;
548 ac_types_checking=1 ;;
549 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
550 ac_fold_checking= ; ac_gc_checking= ; ac_extra_checking= ;
551 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
552 ac_rtlflag_checking= ; ac_runtime_checking= ;
553 ac_tree_checking= ; ac_valgrind_checking= ;
554 ac_types_checking= ;;
555 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
556 ac_fold_checking=1 ; ac_gc_checking=1 ; ac_extra_checking=1 ;
557 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
558 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
559 ac_tree_checking=1 ; ac_valgrind_checking= ;
560 ac_types_checking=1 ;;
561 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
562 ac_fold_checking= ; ac_gc_checking= ; ac_extra_checking= ;
563 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
564 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
565 ac_tree_checking= ; ac_valgrind_checking= ;
566 ac_types_checking= ;;
567 # these enable particular checks
568 assert) ac_assert_checking=1 ;;
569 df) ac_df_checking=1 ;;
570 extra) ac_extra_checking=1 ;;
571 fold) ac_fold_checking=1 ;;
572 gc) ac_gc_checking=1 ;;
573 gcac) ac_gc_always_collect=1 ;;
574 gimple) ac_gimple_checking=1 ;;
575 misc) ac_checking=1 ;;
576 rtl) ac_rtl_checking=1 ;;
577 rtlflag) ac_rtlflag_checking=1 ;;
578 runtime) ac_runtime_checking=1 ;;
579 tree) ac_tree_checking=1 ;;
580 types) ac_types_checking=1 ;;
581 valgrind) ac_valgrind_checking=1 ;;
582 *) AC_MSG_ERROR(unknown check category $check) ;;
588 if test x$ac_checking != x ; then
589 AC_DEFINE(CHECKING_P, 1,
590 [Define to 0/1 if you want more run-time sanity checks. This one gets a grab
591 bag of miscellaneous but relatively cheap checks.])
592 nocommon_flag=-fno-common
594 AC_DEFINE(CHECKING_P, 0)
596 AC_SUBST(nocommon_flag)
597 if test x$ac_extra_checking != x ; then
598 AC_DEFINE(ENABLE_EXTRA_CHECKING, 1,
599 [Define to 0/1 if you want extra run-time checking that might affect code
602 AC_DEFINE(ENABLE_EXTRA_CHECKING, 0)
604 if test x$ac_df_checking != x ; then
605 AC_DEFINE(ENABLE_DF_CHECKING, 1,
606 [Define if you want more run-time sanity checks for dataflow.])
608 if test x$ac_assert_checking != x ; then
609 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
610 [Define if you want assertions enabled. This is a cheap check.])
612 if test x$ac_gimple_checking != x ; then
613 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
614 [Define if you want operations on GIMPLE (the basic data structure of
615 the high-level optimizers) to be checked for dynamic type safety at
616 runtime. This is moderately expensive.])
618 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
619 if test x$ac_runtime_checking != x ; then
620 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
621 [Define if you want runtime assertions enabled. This is a cheap check.])
623 if test x$ac_tree_checking != x ; then
624 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
625 [Define if you want all operations on trees (the basic data
626 structure of the front ends) to be checked for dynamic type safety
627 at runtime. This is moderately expensive.
631 if test x$ac_types_checking != x ; then
632 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
633 [Define if you want all gimple types to be verified after gimplifiation.
637 AC_SUBST(TREECHECKING)
638 if test x$ac_rtl_checking != x ; then
639 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
640 [Define if you want all operations on RTL (the basic data structure
641 of the optimizer and back end) to be checked for dynamic type safety
642 at runtime. This is quite expensive.])
644 if test x$ac_rtlflag_checking != x ; then
645 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
646 [Define if you want RTL flag accesses to be checked against the RTL
647 codes that are supported for each access macro. This is relatively
650 if test x$ac_gc_checking != x ; then
651 AC_DEFINE(ENABLE_GC_CHECKING, 1,
652 [Define if you want the garbage collector to do object poisoning and
653 other memory allocation checks. This is quite expensive.])
655 if test x$ac_gc_always_collect != x ; then
656 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
657 [Define if you want the garbage collector to operate in maximally
658 paranoid mode, validating the entire heap and collecting garbage at
659 every opportunity. This is extremely expensive.])
661 if test x$ac_fold_checking != x ; then
662 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
663 [Define if you want fold checked that it never destructs its argument.
664 This is quite expensive.])
666 valgrind_path_defines=
669 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
670 dnl # an if statement. This was the source of very frustrating bugs
671 dnl # in converting to autoconf 2.5x!
672 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
674 # It is certainly possible that there's valgrind but no valgrind.h.
675 # GCC relies on making annotations so we must have both.
676 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
677 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
678 [[#include <valgrind/memcheck.h>
679 #ifndef VALGRIND_DISCARD
680 #error VALGRIND_DISCARD not defined
682 [gcc_cv_header_valgrind_memcheck_h=yes],
683 [gcc_cv_header_valgrind_memcheck_h=no])
684 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
685 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
686 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
687 [[#include <memcheck.h>
688 #ifndef VALGRIND_DISCARD
689 #error VALGRIND_DISCARD not defined
691 [gcc_cv_header_memcheck_h=yes],
692 [gcc_cv_header_memcheck_h=no])
693 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
694 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
695 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
696 [Define if valgrind's valgrind/memcheck.h header is installed.])
698 if test $gcc_cv_header_memcheck_h = yes; then
699 AC_DEFINE(HAVE_MEMCHECK_H, 1,
700 [Define if valgrind's memcheck.h header is installed.])
703 if test x$ac_valgrind_checking != x ; then
704 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
705 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
706 if test "x$valgrind_path" = "x" \
707 || (test $have_valgrind_h = no \
708 && test $gcc_cv_header_memcheck_h = no \
709 && test $gcc_cv_header_valgrind_memcheck_h = no); then
710 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
712 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
713 valgrind_command="$valgrind_path -q"
714 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
715 [Define if you want to run subprograms and generated programs
716 through valgrind (a memory checker). This is extremely expensive.])
718 AC_SUBST(valgrind_path_defines)
719 AC_SUBST(valgrind_command)
721 # Enable code coverage collection
722 AC_ARG_ENABLE(coverage,
723 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
724 [enable compiler's code coverage collection.
725 Use to measure compiler performance and locate
726 unused parts of the compiler. With LEVEL, specify
727 optimization. Values are opt, noopt,
729 [case "${enableval}" in
731 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
734 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
737 # a.k.a. --disable-coverage
741 AC_MSG_ERROR(unknown coverage setting $enableval)
745 AC_SUBST(coverage_flags)
747 AC_ARG_ENABLE(gather-detailed-mem-stats,
748 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
749 [enable detailed memory allocation stats gathering])], [],
750 [enable_gather_detailed_mem_stats=no])
751 gather_stats=`if test $enable_gather_detailed_mem_stats != no; then echo 1; else echo 0; fi`
752 AC_DEFINE_UNQUOTED(GATHER_STATISTICS, $gather_stats,
753 [Define to enable detailed memory allocation stats gathering.])
755 AC_ARG_ENABLE(valgrind-annotations,
756 [AS_HELP_STRING([--enable-valgrind-annotations],
757 [enable valgrind runtime interaction])], [],
758 [enable_valgrind_annotations=no])
759 if test x$enable_valgrind_annotations != xno \
760 || test x$ac_valgrind_checking != x; then
761 if (test $have_valgrind_h = no \
762 && test $gcc_cv_header_memcheck_h = no \
763 && test $gcc_cv_header_valgrind_memcheck_h = no); then
764 AC_MSG_ERROR([*** Can't find valgrind/memcheck.h, memcheck.h or valgrind.h])
766 AC_DEFINE(ENABLE_VALGRIND_ANNOTATIONS, 1,
767 [Define to get calls to the valgrind runtime enabled.])
770 # -------------------------------
771 # Miscenalleous configure options
772 # -------------------------------
776 [AS_HELP_STRING([--with-stabs],
777 [arrange to use stabs instead of host debug format])],
781 # Determine whether or not multilibs are enabled.
782 AC_ARG_ENABLE(multilib,
783 [AS_HELP_STRING([--enable-multilib],
784 [enable library support for multiple ABIs])],
785 [], [enable_multilib=yes])
786 AC_SUBST(enable_multilib)
788 # Determine whether or not multiarch is enabled.
789 AC_ARG_ENABLE(multiarch,
790 [AS_HELP_STRING([--enable-multiarch],
791 [enable support for multiarch paths])],
792 [case "${enableval}" in
793 yes|no|auto) enable_multiarch=$enableval;;
794 *) AC_MSG_ERROR(bad value ${enableval} given for --enable-multiarch option) ;;
795 esac], [enable_multiarch=auto])
796 if test x${enable_multiarch} = xauto; then
797 if test x${with_native_system_header_dir} != x; then
798 ma_msg_suffix=", disabled auto check (configured with --native-system-header-dir)"
801 if test x$host != x$target && test "x$with_sysroot" = x; then
802 ma_msg_suffix=", disabled auto check (cross build configured without --with-sysroot)"
806 AC_MSG_CHECKING(for multiarch configuration)
807 AC_SUBST(enable_multiarch)
808 AC_MSG_RESULT($enable_multiarch$ma_msg_suffix)
810 # needed for setting the multiarch name for soft-float/hard-float ABIs
814 # Enable __cxa_atexit for C++.
815 AC_ARG_ENABLE(__cxa_atexit,
816 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
819 # Enable C extension for decimal float if target supports it.
820 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
822 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
823 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
824 [Define to 1 to enable decimal float extension to C.])
826 # Use default_decimal_float for dependency.
827 enable_decimal_float=$default_decimal_float
829 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
830 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
831 [Define to 1 to specify that we are using the BID decimal floating
832 point format instead of DPD])
834 # Enable C extension for fixed-point arithmetic.
835 AC_ARG_ENABLE(fixed-point,
836 [AS_HELP_STRING([--enable-fixed-point],
837 [enable fixed-point arithmetic extension to C])],
842 enable_fixed_point=yes
846 enable_fixed_point=yes
849 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
850 enable_fixed_point=no
854 AC_SUBST(enable_fixed_point)
856 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
857 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
858 [Define to 1 to enable fixed-point arithmetic extension to C.])
861 # Pass with no value to take the default
862 # Pass with a value to specify a thread package
863 AC_ARG_ENABLE(threads,
864 [AS_HELP_STRING([[--enable-threads[=LIB]]],
865 [enable thread usage for target GCC,
866 using LIB thread package])],,
870 [AS_HELP_STRING([--enable-tls],
871 [enable or disable generation of tls code
872 overriding the assembler check for tls support])],
876 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
877 Valid choices are 'yes' and 'no'.]) ;;
881 AC_ARG_ENABLE(vtable-verify,
882 [AS_HELP_STRING([--enable-vtable-verify],
883 [enable vtable verification feature])],,
884 [enable_vtable_verify=no])
885 vtable_verify=`if test x$enable_vtable_verify = xyes; then echo 1; else echo 0; fi`
886 AC_DEFINE_UNQUOTED(ENABLE_VTABLE_VERIFY, $vtable_verify,
887 [Define 0/1 if vtable verification feature is enabled.])
889 AC_ARG_ENABLE(objc-gc,
890 [AS_HELP_STRING([--enable-objc-gc],
891 [enable the use of Boehm's garbage collector with
892 the GNU Objective-C runtime])],
893 if test x$enable_objc_gc = xno; then
901 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
902 dwarf2="$with_dwarf2",
905 AC_ARG_ENABLE(shared,
906 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
908 case $enable_shared in
912 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
913 for pkg in $enableval; do
914 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
921 ], [enable_shared=yes])
922 AC_SUBST(enable_shared)
925 [AS_HELP_STRING([--with-specs=SPECS],
926 [add SPECS to driver command-line processing])],
927 [CONFIGURE_SPECS=$withval],
930 AC_SUBST(CONFIGURE_SPECS)
932 ACX_PKGVERSION([GCC])
933 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
935 # Sanity check enable_languages in case someone does not run the toplevel
936 # configure # script.
937 AC_ARG_ENABLE(languages,
938 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
939 [case ,${enable_languages}, in
941 # go safe -- we cannot be much sure without the toplevel
943 # analysis of which target libs are present and usable
947 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
952 enable_languages=c,${enable_languages}
955 [enable_languages=c])
957 if test x"$enable_as_accelerator_for" != x; then
958 AC_DEFINE(ACCEL_COMPILER, 1,
959 [Define if this compiler should be built as the offload target compiler.])
960 enable_as_accelerator=yes
963 # In this case we expect offload compiler to be built as native, so we
964 # need to rename the driver to avoid clashes with host's drivers.
965 program_transform_name="s&^&${target}-&" ;;
967 sedscript="s#${target_noncanonical}#${enable_as_accelerator_for}-accel-${target_noncanonical}#"
968 program_transform_name=`echo $program_transform_name | sed $sedscript`
969 accel_dir_suffix=/accel/${target_noncanonical}
970 real_target_noncanonical=${enable_as_accelerator_for}
972 AC_SUBST(enable_as_accelerator)
973 AC_SUBST(real_target_noncanonical)
974 AC_SUBST(accel_dir_suffix)
976 for tgt in `echo $enable_offload_targets | sed 's/,/ /g'`; do
977 tgt=`echo $tgt | sed 's/=.*//'`
979 if echo "$tgt" | grep "^hsa" > /dev/null ; then
985 if test x"$offload_targets" = x; then
988 offload_targets="$offload_targets,$tgt"
991 AC_DEFINE_UNQUOTED(OFFLOAD_TARGETS, "$offload_targets",
992 [Define to offload targets, separated by commas.])
993 if test x"$enable_offloading" != x; then
994 AC_DEFINE(ENABLE_OFFLOADING, 1,
995 [Define this to enable support for offloading.])
997 AC_DEFINE(ENABLE_OFFLOADING, 0,
998 [Define this to enable support for offloading.])
1001 if test x"$enable_hsa" = x1 ; then
1002 AC_DEFINE(ENABLE_HSA, 1,
1003 [Define this to enable support for generating HSAIL.])
1006 AC_ARG_WITH(multilib-list,
1007 [AS_HELP_STRING([--with-multilib-list], [select multilibs (AArch64, SH and x86-64 only)])],
1009 with_multilib_list=default)
1011 # -------------------------
1012 # Checks for other programs
1013 # -------------------------
1017 # Find some useful tools
1019 # We need awk to create options.c and options.h.
1020 # Bail out if it's missing.
1022 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
1029 AC_SUBST(ranlib_flags)
1033 # See if cmp has --ignore-initial.
1034 gcc_AC_PROG_CMP_IGNORE_INITIAL
1036 # See if we have the mktemp command.
1037 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
1039 # See if makeinfo has been installed and is modern enough
1040 # that we can use it.
1041 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
1042 [GNU texinfo.* \([0-9][0-9.]*\)],
1043 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
1044 if test $gcc_cv_prog_makeinfo_modern = no; then
1046 *** Makeinfo is missing or too old.
1047 *** Info documentation will not be built.])
1052 AC_SUBST(BUILD_INFO)
1054 # Is pod2man recent enough to regenerate manpages?
1055 AC_MSG_CHECKING([for recent Pod::Man])
1056 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
1058 GENERATED_MANPAGES=generated-manpages
1063 AC_SUBST(GENERATED_MANPAGES)
1065 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
1068 dnl Don't use AC_PROG_LEX; we insist on flex.
1069 dnl LEXLIB is not useful in gcc.
1070 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
1073 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
1075 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
1076 # check for build == host before using them.
1079 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
1080 && test -d ../binutils ; then
1081 NM='${objdir}/../binutils/nm-new'
1083 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
1087 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
1088 && test -d ../binutils ; then
1089 AR='${objdir}/../binutils/ar'
1091 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
1094 # The jit documentation looks better if built with sphinx, but can be
1095 # built with texinfo if sphinx is not available.
1096 # Set "doc_build_sys" to "sphinx" or "texinfo" accordingly.
1097 AC_CHECK_PROG(doc_build_sys, sphinx-build, sphinx, texinfo)
1099 # --------------------
1100 # Checks for C headers
1101 # --------------------
1103 # Need to reject headers which give warnings, so that the -Werror bootstrap
1104 # works later. *sigh* This needs to come before all header checks.
1111 AC_HEADER_TIOCGWINSZ
1112 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
1113 fcntl.h ftw.h unistd.h sys/file.h sys/time.h sys/mman.h \
1114 sys/resource.h sys/param.h sys/times.h sys/stat.h \
1115 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
1117 # Check for thread headers.
1118 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
1119 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
1121 # These tests can't be done till we know if we have limits.h.
1125 # ----------------------
1126 # Checks for C++ headers
1127 # ----------------------
1129 dnl Autoconf will give an error in the configure script if there is no
1130 dnl C++ preprocessor. Hack to prevent that.
1131 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
1133 m4_popdef([AC_MSG_ERROR])[]dnl
1135 AC_CHECK_HEADERS(unordered_map)
1136 AC_CHECK_HEADERS(tr1/unordered_map)
1137 AC_CHECK_HEADERS(ext/hash_map)
1140 # Dependency checking.
1144 AC_CONFIG_COMMANDS([gccdepdir],[
1145 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR
1146 for lang in $subdirs c-family common
1148 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs $lang/$DEPDIR
1149 done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR])
1151 ZW_PROG_COMPILER_DEPENDENCIES([CXX])
1158 # These libraries may be used by collect2.
1159 # We may need a special search path to get them linked.
1160 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
1162 for libs in '' -lld -lmld \
1163 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
1164 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1167 AC_TRY_LINK_FUNC(ldopen,
1168 [gcc_cv_collect2_libs="$libs"; break])
1171 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1172 case $gcc_cv_collect2_libs in
1174 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1176 AC_SUBST(COLLECT2_LIBS)
1178 # When building Ada code on Alpha, we need exc_resume which is usually in
1179 # -lexc. So test for it.
1182 AC_SEARCH_LIBS(exc_resume, exc)
1185 AC_SUBST(GNAT_LIBEXC)
1187 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1190 AC_SEARCH_LIBS(kstat_open, kstat)
1191 EXTRA_GCC_LIBS="$LIBS"
1193 AC_SUBST(EXTRA_GCC_LIBS)
1195 # Some systems put ldexp and frexp in libm instead of libc; assume
1196 # they're both in the same place. jcf-dump needs them.
1199 AC_SEARCH_LIBS(ldexp, m)
1204 # Use <inttypes.h> only if it exists,
1205 # doesn't clash with <sys/types.h>, declares intmax_t and defines
1207 AC_MSG_CHECKING(for inttypes.h)
1208 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1209 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1210 [[#define __STDC_FORMAT_MACROS
1211 #include <sys/types.h>
1212 #include <inttypes.h>]],
1217 [gcc_cv_header_inttypes_h=yes],
1218 [gcc_cv_header_inttypes_h=no])])
1219 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1220 if test $gcc_cv_header_inttypes_h = yes; then
1221 AC_DEFINE(HAVE_INTTYPES_H, 1,
1222 [Define if you have a working <inttypes.h> header file.])
1225 dnl Disabled until we have a complete test for buggy enum bitfields.
1226 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1228 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1229 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1230 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1231 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1232 putchar_unlocked putc_unlocked)
1233 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoq \
1234 popen sysconf strsignal getrusage nl_langinfo \
1235 gettimeofday mbstowcs wcswidth mmap setlocale \
1236 gcc_UNLOCKED_FUNCS madvise)
1238 if test x$ac_cv_func_mbstowcs = xyes; then
1239 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1240 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1246 [gcc_cv_func_mbstowcs_works=yes],
1247 [gcc_cv_func_mbstowcs_works=no],
1248 [gcc_cv_func_mbstowcs_works=yes])])
1249 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1250 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1251 [Define this macro if mbstowcs does not crash when its
1252 first argument is NULL.])
1256 AC_CHECK_TYPE(ssize_t, int)
1257 AC_CHECK_TYPE(caddr_t, char *)
1259 GCC_AC_FUNC_MMAP_BLACKLIST
1263 # Under VMS, vfork works very differently than on Unix. The standard test
1264 # won't work, and it isn't easily adaptable. It makes more sense to
1266 ac_cv_func_vfork_works=yes
1273 # Until we have in-tree GNU iconv:
1275 if test -f "$LTLIBICONV"; then
1276 LIBICONV_DEP=$LTLIBICONV
1278 AC_SUBST(LIBICONV_DEP)
1284 # We will need to find libiberty.h and ansidecl.h
1285 saved_CFLAGS="$CFLAGS"
1286 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1287 saved_CXXFLAGS="$CXXFLAGS"
1288 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1290 # gcc_AC_CHECK_DECLS doesn't support overloaded functions, so use the
1291 # normal autoconf function for these. But force definition of
1292 # HAVE_DECL_BASENAME like gcc_AC_CHECK_DECLS does, to suppress the bizarre
1293 # basename handling in libiberty.h.
1294 AC_CHECK_DECLS([basename(const char*), strstr(const char*,const char*)], , ,[
1295 #undef HAVE_DECL_BASENAME
1296 #define HAVE_DECL_BASENAME 1
1297 #include "ansidecl.h"
1298 #include "system.h"])
1300 gcc_AC_CHECK_DECLS(getenv atol atoll asprintf sbrk abort atof getcwd getwd \
1301 madvise stpcpy strnlen strsignal strverscmp \
1302 strtol strtoul strtoll strtoull setenv unsetenv \
1303 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1304 free getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1305 #include "ansidecl.h"
1306 #include "system.h"])
1308 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1309 #include "ansidecl.h"
1311 #ifdef HAVE_SYS_RESOURCE_H
1312 #include <sys/resource.h>
1316 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1317 #include "ansidecl.h"
1319 #ifdef HAVE_SYS_RESOURCE_H
1320 #include <sys/resource.h>
1322 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1323 [Define to `long' if <sys/resource.h> doesn't define.])])
1325 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1326 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1327 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1328 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1329 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1330 #include "ansidecl.h"
1339 gcc_AC_CHECK_DECLS(times, , ,[
1340 #include "ansidecl.h"
1342 #ifdef HAVE_SYS_TIMES_H
1343 #include <sys/times.h>
1347 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1348 #include "ansidecl.h"
1353 # More time-related stuff.
1354 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1355 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1356 #include "ansidecl.h"
1358 #ifdef HAVE_SYS_TIMES_H
1359 #include <sys/times.h>
1361 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1362 if test $ac_cv_struct_tms = yes; then
1363 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1364 [Define if <sys/times.h> defines struct tms.])
1367 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1368 # revisit after autoconf 2.50.
1369 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1370 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1371 #include "ansidecl.h"
1373 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1374 if test $gcc_cv_type_clock_t = yes; then
1375 AC_DEFINE(HAVE_CLOCK_T, 1,
1376 [Define if <time.h> defines clock_t.])
1379 # Check if F_SETLKW is supported by fcntl.
1380 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1381 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1382 #include <fcntl.h>]], [[
1388 return fcntl (1, F_SETLKW, &fl);]])],
1389 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1390 if test $ac_cv_f_setlkw = yes; then
1391 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1392 [Define if F_SETLKW supported by fcntl.])
1395 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1396 CFLAGS="$saved_CFLAGS"
1397 CXXFLAGS="$saved_CXXFLAGS"
1399 # mkdir takes a single argument on some systems.
1400 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1408 # With Setjmp/Longjmp based exception handling.
1409 AC_ARG_ENABLE(sjlj-exceptions,
1410 [AS_HELP_STRING([--enable-sjlj-exceptions],
1411 [arrange to use setjmp/longjmp exception handling])],
1414 if test $enableval != yes; then
1415 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1420 force_sjlj_exceptions=yes],
1423 force_sjlj_exceptions=yes
1427 force_sjlj_exceptions=yes
1431 force_sjlj_exceptions=no
1434 if test $force_sjlj_exceptions = yes; then
1435 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1436 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1437 [Define 0/1 to force the choice for exception handling model.])
1440 # --------------------------------------------------------
1441 # Build, host, and target specific configuration fragments
1442 # --------------------------------------------------------
1444 # Collect build-machine-specific information.
1445 . ${srcdir}/config.build
1447 # Collect host-machine-specific information.
1448 . ${srcdir}/config.host
1452 # Collect target-machine-specific information.
1453 . ${srcdir}/config.gcc
1455 extra_objs="${host_extra_objs} ${extra_objs}"
1456 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1458 # Default the target-machine variables that were not explicitly set.
1459 if test x"$tm_file" = x
1460 then tm_file=$cpu_type/$cpu_type.h; fi
1462 if test x"$extra_headers" = x
1463 then extra_headers=; fi
1465 if test x$md_file = x
1466 then md_file=$cpu_type/$cpu_type.md; fi
1468 if test x$out_file = x
1469 then out_file=$cpu_type/$cpu_type.c; fi
1471 if test x"$tmake_file" = x
1472 then tmake_file=$cpu_type/t-$cpu_type
1475 # Support --enable-initfini-array.
1476 if test x$enable_initfini_array != xno; then
1477 tm_file="${tm_file} initfini-array.h"
1480 if test x"$dwarf2" = xyes
1481 then tm_file="$tm_file tm-dwarf2.h"
1484 # Say what files are being used for the output code and MD file.
1485 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1486 echo "Using \`$srcdir/config/$md_file' as machine description file."
1488 # If any of the xm_file variables contain nonexistent files, warn
1489 # about them and drop them.
1492 for x in $build_xm_file; do
1493 if test -f $srcdir/config/$x
1495 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1501 for x in $host_xm_file; do
1502 if test -f $srcdir/config/$x
1504 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1510 for x in $xm_file; do
1511 if test -f $srcdir/config/$x
1513 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1519 for f in $tm_file; do
1522 if test $count = ax; then
1523 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1525 echo "Using the following target machine macro files:"
1526 for f in $tm_file; do
1527 echo " $srcdir/config/$f"
1531 if test x$use_long_long_for_widest_fast_int = xyes; then
1532 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1533 [Define to 1 if the 'long long' type is wider than 'long' but still
1534 efficiently supported by the host hardware.])
1537 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1538 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1540 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1541 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1544 for f in $host_xm_file; do
1547 if test $count = a; then
1549 elif test $count = ax; then
1550 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1552 echo "Using the following host machine macro files:"
1553 for f in $host_xm_file; do
1554 echo " $srcdir/config/$f"
1557 echo "Using ${out_host_hook_obj} for host machine hooks."
1559 if test "$host_xm_file" != "$build_xm_file"; then
1561 for f in $build_xm_file; do
1564 if test $count = a; then
1566 elif test $count = ax; then
1567 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1569 echo "Using the following build machine macro files:"
1570 for f in $build_xm_file; do
1571 echo " $srcdir/config/$f"
1576 if test -n "$configured_native_system_header_dir"; then
1577 native_system_header_dir=$configured_native_system_header_dir
1579 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1580 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1584 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1585 gcc_cv_mcontext_underscores,
1587 #include <sys/cdefs.h>
1588 #include <sys/signal.h>
1589 #include <ucontext.h>
1590 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1592 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1593 if test $gcc_cv_mcontext_underscores = yes; then
1594 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1595 [mcontext_t fields start with __])
1604 # Check if a valid thread package
1605 case ${enable_threads} in
1608 target_thread_file='single'
1612 target_thread_file='single'
1614 aix | dce | lynx | mipssde | posix | rtems | \
1615 single | tpf | vxworks | win32)
1616 target_thread_file=${enable_threads}
1619 echo "${enable_threads} is an unknown thread package" 1>&2
1624 if test x${thread_file} = x; then
1625 # No thread file set by target-specific clauses in config.gcc,
1626 # so use file chosen by default logic above
1627 thread_file=${target_thread_file}
1635 if test x$enable___cxa_atexit = xyes || \
1636 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1637 if test x$host = x$target; then
1639 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1640 # keyed to flag_use_cxa_atexit
1648 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1649 [echo "__cxa_atexit can't be enabled on this target"])
1653 # We can't check for __cxa_atexit when building a cross, so assume
1657 if test x$use_cxa_atexit = xyes; then
1658 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1659 [Define if you want to use __cxa_atexit, rather than atexit, to
1660 register C++ destructors for local statics and global objects.
1661 This is essential for fully standards-compliant handling of
1662 destructors, but requires __cxa_atexit in libc.])
1666 # Look for a file containing extra machine modes.
1667 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1668 extra_modes_file='$(srcdir)'/config/${extra_modes}
1669 AC_SUBST(extra_modes_file)
1670 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1671 [Define to the name of a file containing a list of extra machine modes
1672 for this architecture.])
1675 # Convert extra_options into a form suitable for Makefile use.
1678 for f in $extra_options; do
1679 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1680 all_opt_files="$all_opt_files $srcdir/config/$f"
1682 AC_SUBST(extra_opt_files)
1684 # auto-host.h is the file containing items generated by autoconf and is
1685 # the first file included by config.h.
1686 # If host=build, it is correct to have bconfig include auto-host.h
1687 # as well. If host!=build, we are in error and need to do more
1688 # work to find out the build config parameters.
1689 if test x$host = x$build
1691 build_auto=auto-host.h
1693 # We create a subdir, then run autoconf in the subdir.
1694 # To prevent recursion we set host and build for the new
1695 # invocation of configure to the build for this invocation
1702 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1703 *) realsrcdir=../${srcdir};;
1705 # Clearing GMPINC is necessary to prevent host headers being
1706 # used by the build compiler. Defining GENERATOR_FILE stops
1707 # system.h from including gmp.h.
1708 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1709 CXX="${CXX_FOR_BUILD}" CXXFLAGS="${CXXFLAGS_FOR_BUILD}" \
1710 LD="${LD_FOR_BUILD}" LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1711 GMPINC="" CPPFLAGS="${CPPFLAGS} -DGENERATOR_FILE" \
1712 ${realsrcdir}/configure \
1713 --enable-languages=${enable_languages-all} \
1714 --target=$target_alias --host=$build_alias --build=$build_alias
1716 # We just finished tests for the build machine, so rename
1717 # the file auto-build.h in the gcc directory.
1718 mv auto-host.h ../auto-build.h
1721 build_auto=auto-build.h
1723 AC_SUBST(build_subdir)
1725 tm_file="${tm_file} defaults.h"
1726 tm_p_file="${tm_p_file} tm-preds.h"
1727 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1728 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1729 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1730 # put this back in temporarily.
1731 xm_file="auto-host.h ansidecl.h ${xm_file}"
1738 # Compile in configure arguments.
1739 if test -f configargs.h ; then
1740 # Being re-configured.
1741 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1742 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1744 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1747 # Double all backslashes and backslash all quotes to turn
1748 # gcc_config_arguments into a C string.
1749 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1750 $gcc_config_arguments
1752 gcc_config_arguments_str=`cat conftest.out`
1755 cat > configargs.h <<EOF
1756 /* Generated automatically. */
1757 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1758 static const char thread_model[] = "$thread_file";
1760 static const struct {
1761 const char *name, *value;
1762 } configure_default_options[] = $configure_default_options;
1767 gcc_BASEVER=`cat $srcdir/BASE-VER`
1768 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1769 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1770 if test -f $srcdir/REVISION ; then
1771 gcc_REVISION=`cat $srcdir/REVISION`
1775 cat > plugin-version.h <<EOF
1776 #include "configargs.h"
1778 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1779 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1780 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1781 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1783 static char basever[] = "$gcc_BASEVER";
1784 static char datestamp[] = "$gcc_DATESTAMP";
1785 static char devphase[] = "$gcc_DEVPHASE";
1786 static char revision[] = "$gcc_REVISION";
1788 /* FIXME plugins: We should make the version information more precise.
1789 One way to do is to add a checksum. */
1791 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1793 configuration_arguments};
1797 # Determine what GCC version number to use in filesystem paths.
1800 # Internationalization
1801 ZW_GNU_GETTEXT_SISTER_DIR
1803 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1804 # -liconv on the link line twice.
1805 case "$LIBINTL" in *$LIBICONV*)
1809 AC_ARG_ENABLE(secureplt,
1810 [AS_HELP_STRING([--enable-secureplt],
1811 [enable -msecure-plt by default for PowerPC])],
1814 AC_ARG_ENABLE(leading-mingw64-underscores,
1815 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1816 [enable leading underscores on 64 bit mingw targets]),
1818 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1819 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1820 [Define if we should use leading underscore on 64 bit mingw targets])])
1823 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1826 AC_ARG_ENABLE(frame-pointer,
1827 [AS_HELP_STRING([--enable-frame-pointer],
1828 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1831 linux* | darwin[[8912]]*)
1832 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1834 enable_frame_pointer=no
1837 enable_frame_pointer=yes
1842 # Windows32 Registry support for specifying GCC installation paths.
1843 AC_ARG_ENABLE(win32-registry,
1844 [AS_HELP_STRING([--disable-win32-registry],
1845 [disable lookup of installation paths in the
1846 Registry on Windows hosts])
1847 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1848 AS_HELP_STRING([--enable-win32-registry=KEY],
1849 [use KEY instead of GCC version as the last portion
1850 of the registry key])],,)
1853 win32 | pe | cygwin* | mingw32*)
1854 if test "x$enable_win32_registry" != xno; then
1855 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1858 if test "x$enable_win32_registry" != xno; then
1859 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1860 [Define to 1 if installation paths should be looked up in the Windows
1861 Registry. Ignored on non-Windows hosts.])
1863 if test "x$enable_win32_registry" != xyes \
1864 && test "x$enable_win32_registry" != x; then
1865 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1866 [Define to be the last component of the Windows registry key under which
1867 to look for installation paths. The full key used will be
1868 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1869 The default is the GCC version number.])
1875 # Get an absolute path to the GCC top-level source directory
1876 holddir=`${PWDCMD-pwd}`
1878 topdir=`${PWDCMD-pwd}`
1881 # Conditionalize the makefile for this host machine.
1883 for f in ${host_xmake_file}
1885 if test -f ${srcdir}/config/$f
1887 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1891 # Conditionalize the makefile for this target machine.
1893 for f in ${tmake_file}
1895 if test -f ${srcdir}/config/$f
1897 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1900 tmake_file="${tmake_file_}"
1902 out_object_file=`basename $out_file .c`.o
1903 common_out_object_file=`basename $common_out_file .c`.o
1905 tm_file_list="options.h"
1906 tm_include_list="options.h insn-constants.h"
1907 for f in $tm_file; do
1910 f=`echo $f | sed 's/^..//'`
1911 tm_file_list="${tm_file_list} $f"
1912 tm_include_list="${tm_include_list} $f"
1915 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1916 tm_include_list="${tm_include_list} $f"
1919 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1920 tm_include_list="${tm_include_list} config/$f"
1927 for f in $tm_p_file; do
1930 tm_p_file_list="${tm_p_file_list} $f"
1931 tm_p_include_list="${tm_p_include_list} $f"
1934 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1935 tm_p_include_list="${tm_p_include_list} config/$f"
1941 for f in $xm_file; do
1944 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1945 xm_include_list="${xm_include_list} $f"
1948 xm_file_list="${xm_file_list} $f"
1949 xm_include_list="${xm_include_list} $f"
1952 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1953 xm_include_list="${xm_include_list} config/$f"
1959 host_xm_include_list=
1960 for f in $host_xm_file; do
1963 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1964 host_xm_include_list="${host_xm_include_list} $f"
1967 host_xm_file_list="${host_xm_file_list} $f"
1968 host_xm_include_list="${host_xm_include_list} $f"
1971 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1972 host_xm_include_list="${host_xm_include_list} config/$f"
1978 for f in $build_xm_file; do
1981 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1982 build_xm_include_list="${build_xm_include_list} $f"
1984 auto-build.h | auto-host.h )
1985 build_xm_file_list="${build_xm_file_list} $f"
1986 build_xm_include_list="${build_xm_include_list} $f"
1989 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1990 build_xm_include_list="${build_xm_include_list} config/$f"
1995 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1996 # cross-compiler which does not use the native headers and libraries.
1997 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1998 CROSS= AC_SUBST(CROSS)
1999 ALL=all.internal AC_SUBST(ALL)
2000 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
2002 if test "x$with_build_sysroot" != x; then
2003 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
2005 # This value is used, even on a native system, because
2006 # CROSS_SYSTEM_HEADER_DIR is just
2007 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
2008 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
2011 if test x$host != x$target
2013 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
2015 SYSTEM_HEADER_DIR=$build_system_header_dir
2018 if test "x$with_headers" = x; then
2025 elif test "x$TARGET_SYSTEM_ROOT" != x; then
2026 SYSTEM_HEADER_DIR=$build_system_header_dir
2029 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
2030 if test "x$with_headers" != x && test "x$with_headers" != xyes; then
2031 target_header_dir=$with_headers
2032 elif test "x$with_sysroot" = x; then
2033 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
2034 elif test "x$with_build_sysroot" != "x"; then
2035 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
2036 elif test "x$with_sysroot" = xyes; then
2037 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
2039 target_header_dir="${with_sysroot}${native_system_header_dir}"
2042 target_header_dir=${native_system_header_dir}
2045 # If this is a cross-compiler that does not
2046 # have its own set of headers then define
2049 # If this is using newlib, without having the headers available now,
2050 # then define inhibit_libc in LIBGCC2_CFLAGS.
2051 # This prevents libgcc2 from containing any code which requires libc
2053 : ${inhibit_libc=false}
2054 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
2055 test x$with_newlib = xyes ; } &&
2056 { test "x$with_headers" = xno || test ! -f "$target_header_dir/stdio.h"; } ; then
2059 AC_SUBST(inhibit_libc)
2061 # When building gcc with a cross-compiler, we need to adjust things so
2062 # that the generator programs are still built with the native compiler.
2063 # Also, we cannot run fixincludes.
2065 # These are the normal (build=host) settings:
2066 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
2067 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
2068 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
2069 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
2070 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
2071 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
2073 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS)' AC_SUBST(BUILD_NO_PIE_CFLAGS)
2074 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG)' AC_SUBST(BUILD_NO_PIE_FLAG)
2076 # And these apply if build != host, or we are generating coverage data
2077 if test x$build != x$host || test "x$coverage_flags" != x
2079 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
2080 BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CXXFLAGS_FOR_BUILD)'
2081 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
2083 NO_PIE_CFLAGS_FOR_BUILD=${NO_PIE_CFLAGS_FOR_BUILD-${NO_PIE_CFLAGS}}
2084 NO_PIE_FLAG_FOR_BUILD=${NO_PIE_FLAG_FOR_BUILD-${NO_PIE_FLAG}}
2085 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS_FOR_BUILD)'
2086 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG_FOR_BUILD)'
2088 AC_SUBST(NO_PIE_CFLAGS_FOR_BUILD)
2089 AC_SUBST(NO_PIE_FLAG_FOR_BUILD)
2091 # Expand extra_headers to include complete path.
2092 # This substitutes for lots of t-* files.
2094 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
2095 for file in ${extra_headers} ; do
2096 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
2099 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
2100 if test x"$use_gcc_tgmath" = xyes
2101 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
2104 # Define collect2 in Makefile.
2105 case $host_can_use_collect2 in
2107 *) collect2='collect2$(exeext)' ;;
2109 AC_SUBST([collect2])
2111 # Add a definition of USE_COLLECT2 if system wants one.
2112 case $use_collect2 in
2113 no) use_collect2= ;;
2116 host_xm_defines="${host_xm_defines} USE_COLLECT2"
2117 xm_defines="${xm_defines} USE_COLLECT2"
2118 case $host_can_use_collect2 in
2120 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
2126 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
2127 [Define to the name of the LTO plugin DSO that must be
2128 passed to the linker's -plugin=LIB option.])
2130 # ---------------------------
2131 # Assembler & linker features
2132 # ---------------------------
2134 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
2135 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
2136 # However when ld-new is first executed from the build tree, libtool will
2137 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
2138 # to the build tree. While doing this we need to use the previous-stage
2139 # linker, or we have an infinite loop. The presence of a shell script as
2140 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
2141 # the gcc/collect-ld script. So we need to know how libtool works, or
2142 # exec-tool will fail.
2144 m4_defun([_LT_CONFIG_COMMANDS], [])
2147 AC_SUBST(enable_fast_install)
2149 # Identify the assembler which will work hand-in-glove with the newly
2150 # built GCC, so that we can examine its features. This is the assembler
2151 # which will be driven by the driver program.
2153 # If build != host, and we aren't building gas in-tree, we identify a
2154 # build->target assembler and hope that it will have the same features
2155 # as the host->target assembler we'll be using.
2156 gcc_cv_gas_major_version=
2157 gcc_cv_gas_minor_version=
2158 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
2160 m4_pattern_allow([AS_FOR_TARGET])dnl
2161 AS_VAR_SET_IF(gcc_cv_as,, [
2162 if test -x "$DEFAULT_ASSEMBLER"; then
2163 gcc_cv_as="$DEFAULT_ASSEMBLER"
2164 elif test -f $gcc_cv_as_gas_srcdir/configure.ac \
2165 && test -f ../gas/Makefile \
2166 && test x$build = x$host; then
2167 gcc_cv_as=../gas/as-new$build_exeext
2168 elif test -x as$build_exeext; then
2169 # Build using assembler in the current directory.
2170 gcc_cv_as=./as$build_exeext
2171 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
2172 gcc_cv_as="$AS_FOR_TARGET"
2174 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
2177 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
2178 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
2179 case "$ORIGINAL_AS_FOR_TARGET" in
2180 ./as | ./as$build_exeext) ;;
2181 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2184 AC_MSG_CHECKING(what assembler to use)
2185 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
2186 # Single tree build which includes gas. We want to prefer it
2187 # over whatever linker top-level may have detected, since
2188 # we'll use what we're building after installation anyway.
2189 AC_MSG_RESULT(newly built gas)
2191 _gcc_COMPUTE_GAS_VERSION
2192 in_tree_gas_is_elf=no
2193 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
2194 || (grep 'obj_format = multi' ../gas/Makefile \
2195 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
2197 in_tree_gas_is_elf=yes
2200 AC_MSG_RESULT($gcc_cv_as)
2206 [[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]],
2207 [case "${enableval}" in
2213 install_gold_as_default=no
2215 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
2216 [case "${enableval}" in
2218 install_gold_as_default=yes
2221 if test x${default_ld} != x; then
2222 install_gold_as_default=yes
2228 AC_MSG_ERROR([invalid --enable-gold argument])
2232 # Identify the linker which will work hand-in-glove with the newly
2233 # built GCC, so that we can examine its features. This is the linker
2234 # which will be driven by the driver program.
2236 # If build != host, and we aren't building gas in-tree, we identify a
2237 # build->target linker and hope that it will have the same features
2238 # as the host->target linker we'll be using.
2239 gcc_cv_gld_major_version=
2240 gcc_cv_gld_minor_version=
2241 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2242 gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold
2243 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2245 AS_VAR_SET_IF(gcc_cv_ld,, [
2246 if test -x "$DEFAULT_LINKER"; then
2247 gcc_cv_ld="$DEFAULT_LINKER"
2248 elif test $install_gold_as_default = yes \
2249 && test -f $gcc_cv_ld_gold_srcdir/configure.ac \
2250 && test -f ../gold/Makefile \
2251 && test x$build = x$host; then
2252 gcc_cv_ld=../gold/ld-new$build_exeext
2253 elif test -f $gcc_cv_ld_gld_srcdir/configure.ac \
2254 && test -f ../ld/Makefile \
2255 && test x$build = x$host; then
2256 gcc_cv_ld=../ld/ld-new$build_exeext
2257 elif test -x collect-ld$build_exeext; then
2258 # Build using linker in the current directory.
2259 gcc_cv_ld=./collect-ld$build_exeext
2260 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2261 gcc_cv_ld="$LD_FOR_TARGET"
2263 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2266 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2267 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2268 # if the PLUGIN_LD is set ld-new, just have it as ld
2269 # as that is the installed named.
2270 if test x$PLUGIN_LD_SUFFIX = xld-new \
2271 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2274 AC_ARG_WITH(plugin-ld,
2275 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2276 [if test x"$withval" != x; then
2277 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2278 PLUGIN_LD_SUFFIX="$withval"
2280 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2281 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2283 # Check to see if we are using gold instead of ld
2284 AC_MSG_CHECKING(whether we are using gold)
2286 if test x$gcc_cv_ld != x; then
2287 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2288 | grep "GNU gold" > /dev/null; then
2292 AC_MSG_RESULT($ld_is_gold)
2294 AC_MSG_CHECKING(gold linker with split stack support as non default)
2295 # Check to see if default ld is not gold, but gold is
2296 # available and has support for split stack. If gcc was configured
2297 # with gold then no checking is done.
2299 if test x$ld_is_gold = xno && which ${gcc_cv_ld}.gold >/dev/null 2>&1; then
2301 # For platforms other than powerpc64*, enable as appropriate.
2304 ld_gold=`which ${gcc_cv_ld}.gold`
2305 # Make sure this gold has minimal split stack support
2306 if $ld_gold --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then
2307 ld_vers=`$ld_gold --version | sed 1q`
2308 gold_vers=`echo $ld_vers | sed -n \
2309 -e 's,^[[^)]]*[[ ]]\([[0-9]][[0-9]]*\.[[0-9]][[0-9]]*[[^)]]*\)) .*$,\1,p'`
2311 # check that the gold version contains the complete split stack support
2312 # on powerpc64 big and little endian
2314 case "$gold_vers" in
2315 2.25.[[1-9]]*|2.2[[6-9]][[.0-9]]*|2.[[3-9]][[.0-9]]*|[[3-9]].[[.0-9]]*) gold_non_default=yes
2317 *) gold_non_default=no
2323 if test $gold_non_default = yes; then
2324 AC_DEFINE(HAVE_GOLD_NON_DEFAULT_SPLIT_STACK, 1,
2325 [Define if the gold linker supports split stack and is available as a non-default])
2328 AC_MSG_RESULT($gold_non_default)
2330 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2331 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2332 case "$ORIGINAL_LD_FOR_TARGET" in
2333 ./collect-ld | ./collect-ld$build_exeext) ;;
2334 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2337 AC_MSG_CHECKING(what linker to use)
2338 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2339 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2340 # Single tree build which includes ld. We want to prefer it
2341 # over whatever linker top-level may have detected, since
2342 # we'll use what we're building after installation anyway.
2343 AC_MSG_RESULT(newly built ld)
2345 in_tree_ld_is_elf=no
2346 if (grep 'EMUL = .*elf' ../ld/Makefile \
2347 || grep 'EMUL = .*linux' ../ld/Makefile \
2348 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2349 in_tree_ld_is_elf=yes
2350 elif test "$ld_is_gold" = yes; then
2351 in_tree_ld_is_elf=yes
2353 for f in $gcc_cv_ld_bfd_srcdir/configure $gcc_cv_ld_gld_srcdir/configure $gcc_cv_ld_gld_srcdir/configure.ac $gcc_cv_ld_gld_srcdir/Makefile.in
2356 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2357 if test x$gcc_cv_gld_version != x; then
2361 case $gcc_cv_gld_version in
2364 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2367 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2368 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2370 ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext
2371 ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext
2373 AC_MSG_RESULT($gcc_cv_ld)
2375 gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext`
2376 ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext
2377 ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext
2380 AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET)
2381 AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET)
2383 # Figure out what nm we will be using.
2384 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2385 AS_VAR_SET_IF(gcc_cv_nm,, [
2386 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2387 && test -f ../binutils/Makefile \
2388 && test x$build = x$host; then
2389 gcc_cv_nm=../binutils/nm-new$build_exeext
2390 elif test -x nm$build_exeext; then
2391 gcc_cv_nm=./nm$build_exeext
2392 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2393 gcc_cv_nm="$NM_FOR_TARGET"
2395 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2398 AC_MSG_CHECKING(what nm to use)
2399 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2400 # Single tree build which includes binutils.
2401 AC_MSG_RESULT(newly built nm)
2404 AC_MSG_RESULT($gcc_cv_nm)
2408 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2409 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2410 case "$ORIGINAL_NM_FOR_TARGET" in
2411 ./nm | ./nm$build_exeext) ;;
2412 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2416 # Figure out what objdump we will be using.
2417 AS_VAR_SET_IF(gcc_cv_objdump,, [
2418 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2419 && test -f ../binutils/Makefile \
2420 && test x$build = x$host; then
2421 # Single tree build which includes binutils.
2422 gcc_cv_objdump=../binutils/objdump$build_exeext
2423 elif test -x objdump$build_exeext; then
2424 gcc_cv_objdump=./objdump$build_exeext
2425 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2426 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2428 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2431 AC_MSG_CHECKING(what objdump to use)
2432 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2433 # Single tree build which includes binutils.
2434 AC_MSG_RESULT(newly built objdump)
2435 elif test x$gcc_cv_objdump = x; then
2436 AC_MSG_RESULT(not found)
2438 AC_MSG_RESULT($gcc_cv_objdump)
2441 # Figure out what readelf we will be using.
2442 AS_VAR_SET_IF(gcc_cv_readelf,, [
2443 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2444 && test -f ../binutils/Makefile \
2445 && test x$build = x$host; then
2446 # Single tree build which includes binutils.
2447 gcc_cv_readelf=../binutils/readelf$build_exeext
2448 elif test -x readelf$build_exeext; then
2449 gcc_cv_readelf=./readelf$build_exeext
2450 elif ( set dummy $READELF_FOR_TARGET; test -x $[2] ); then
2451 gcc_cv_readelf="$READELF_FOR_TARGET"
2453 AC_PATH_PROG(gcc_cv_readelf, $READELF_FOR_TARGET)
2456 AC_MSG_CHECKING(what readelf to use)
2457 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2458 # Single tree build which includes binutils.
2459 AC_MSG_RESULT(newly built readelf)
2460 elif test x$gcc_cv_readelf = x; then
2461 AC_MSG_RESULT(not found)
2463 AC_MSG_RESULT($gcc_cv_readelf)
2466 # Figure out what assembler alignment features are present.
2467 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2471 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2472 [Define if your assembler supports .balign and .p2align.])])
2474 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2477 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2478 [Define if your assembler supports specifying the maximum number
2479 of bytes to skip when using the GAS .p2align command.])])
2481 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2484 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2485 [Define if your assembler supports .literal16.])])
2487 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2489 [conftest_label1: .word 0
2491 conftest_label2: .word 0
2493 [if test x$gcc_cv_nm != x; then
2494 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2495 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2496 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2498 else gcc_cv_as_subsection_m1=yes
2500 rm -f conftest.nm1 conftest.nm2
2502 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2503 [Define if your assembler supports .subsection and .subsection -1 starts
2504 emitting at the beginning of your section.])])
2506 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2509 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2511 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2513 [ .weakref foobar, barfnot],,
2514 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2516 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2519 .NSUBSPA $CODE$,COMDAT],,
2520 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2522 # .hidden needs to be supported in both the assembler and the linker,
2523 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2524 # This is irritatingly difficult to feature test for; we have to check the
2525 # date string after the version number. If we've got an in-tree
2526 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2528 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2531 conftest_s=' .globl foobar,hidden'
2534 conftest_s=' .hidden foobar
2538 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2539 [elf,2,13,0],, [$conftest_s])
2542 # Darwin as has some visibility support, though with a different syntax.
2543 gcc_cv_as_hidden=yes
2547 # gnu_indirect_function type is an extension proposed at
2548 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2549 # selection of function implementation
2550 AC_ARG_ENABLE(gnu-indirect-function,
2551 [AS_HELP_STRING([--enable-gnu-indirect-function],
2552 [enable the use of the @gnu_indirect_function to glibc systems])],
2553 [case $enable_gnu_indirect_function in
2555 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2556 Valid choices are 'yes' and 'no'.]) ;;
2558 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2560 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
2561 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
2562 [Define if your system supports gnu indirect functions.])
2566 if test $in_tree_ld != yes ; then
2567 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2568 if echo "$ld_ver" | grep GNU > /dev/null; then
2569 if test x"$ld_is_gold" = xyes; then
2570 # GNU gold --version looks like this:
2572 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2574 # We extract the binutils version which is more familiar and specific
2575 # than the gold version.
2576 ld_vers=`echo $ld_ver | sed -n \
2577 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2579 # GNU ld --version looks like this:
2581 # GNU ld (GNU Binutils) 2.21.51.20110225
2582 ld_vers=`echo $ld_ver | sed -n \
2583 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2585 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2586 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2587 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2588 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2592 # See acinclude.m4 (gcc_SUN_LD_VERSION) for the version number
2595 # Don't reuse gcc_gv_sun_ld_vers_* in case a linker other than
2596 # /usr/ccs/bin/ld has been configured.
2597 ld_ver=`$gcc_cv_ld -V 2>&1`
2598 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2599 ld_vers=`echo $ld_ver | sed -n \
2600 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2601 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2602 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2610 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2611 [[if test $in_tree_ld = yes ; then
2613 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2614 && test $in_tree_ld_is_elf = yes; then
2615 gcc_cv_ld_hidden=yes
2618 gcc_cv_ld_hidden=yes
2619 if test x"$ld_is_gold" = xyes; then
2621 elif echo "$ld_ver" | grep GNU > /dev/null; then
2623 mmix-knuth-mmixware)
2624 # The linker emits by default mmo, not ELF, so "no" is appropriate.
2628 if test 0"$ld_date" -lt 20020404; then
2629 if test -n "$ld_date"; then
2630 # If there was date string, but was earlier than 2002-04-04, fail
2632 elif test -z "$ld_vers"; then
2633 # If there was no date string nor ld version number, something is wrong
2636 test -z "$ld_vers_patch" && ld_vers_patch=0
2637 if test "$ld_vers_major" -lt 2; then
2639 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2640 gcc_cv_ld_hidden="no"
2641 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2649 gcc_cv_ld_hidden=yes
2652 # Darwin ld has some visibility support.
2653 gcc_cv_ld_hidden=yes
2655 hppa64*-*-hpux* | ia64*-*-hpux*)
2656 gcc_cv_ld_hidden=yes
2658 *-*-solaris2.1[0-9]*)
2659 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2660 # .symbolic was only added in Solaris 9 12/02.
2661 gcc_cv_ld_hidden=yes
2669 libgcc_visibility=no
2670 AC_SUBST(libgcc_visibility)
2671 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2672 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2673 libgcc_visibility=yes
2674 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2675 [Define if your assembler and linker support .hidden.])
2678 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2679 gcc_cv_ld_ro_rw_mix=unknown
2680 if test $in_tree_ld = yes ; then
2681 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2682 && test $in_tree_ld_is_elf = yes; then
2683 gcc_cv_ld_ro_rw_mix=read-write
2685 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2686 echo '.section myfoosect, "a"' > conftest1.s
2687 echo '.section myfoosect, "aw"' > conftest2.s
2688 echo '.byte 1' >> conftest2.s
2689 echo '.section myfoosect, "a"' > conftest3.s
2690 echo '.byte 0' >> conftest3.s
2691 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2692 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2693 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2694 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2695 conftest2.o conftest3.o > /dev/null 2>&1; then
2696 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2697 | sed -e '/myfoosect/!d' -e N`
2698 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2699 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2700 gcc_cv_ld_ro_rw_mix=read-only
2702 gcc_cv_ld_ro_rw_mix=read-write
2707 rm -f conftest.* conftest[123].*
2710 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2711 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2712 [Define if your linker links a mix of read-only
2713 and read-write sections into a read-write section.])
2715 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2717 gcc_AC_INITFINI_ARRAY
2719 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2720 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2728 [[# GAS versions before 2.11 do not support uleb128,
2729 # despite appearing to.
2730 # ??? There exists an elf-specific test that will crash
2731 # the assembler. Perhaps it's better to figure out whether
2732 # arbitrary sections are supported and try the test.
2733 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2734 if echo "$as_ver" | grep GNU > /dev/null; then
2735 as_vers=`echo $as_ver | sed -n \
2736 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2737 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2738 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2739 if test $as_major -eq 2 && test $as_minor -lt 11
2741 else gcc_cv_as_leb128=yes
2744 [AC_DEFINE(HAVE_AS_LEB128, 1,
2745 [Define if your assembler supports .sleb128 and .uleb128.])],
2746 [AC_DEFINE(HAVE_AS_LEB128, 0,
2747 [Define if your assembler supports .sleb128 and .uleb128.])])
2749 # Check if we have assembler support for unwind directives.
2750 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2757 .cfi_escape 1, 2, 3, 4, 5
2761 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2762 # read-only and read-write sections, we need to make sure that the
2763 # assembler used emits read-write .eh_frame sections.
2764 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2765 if test "x$gcc_cv_objdump" != x; then
2766 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2767 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2768 gcc_cv_as_cfi_directive=no
2771 i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*)
2772 # On Solaris/x86, make sure that GCC and assembler agree on using
2773 # read-only .eh_frame sections for 64-bit.
2774 if test x$gas = xyes; then
2775 as_ix86_64_opt="--64"
2777 as_ix86_64_opt="-xarch=amd64"
2779 if $gcc_cv_as $as_ix86_64_opt -o conftest.o conftest.s > /dev/null 2>&1 && \
2780 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2781 sed -e /.eh_frame/!d -e N | \
2782 grep READONLY > /dev/null; then
2783 gcc_cv_as_cfi_directive=yes
2785 gcc_cv_as_cfi_directive=no
2789 gcc_cv_as_cfi_directive=yes
2794 # no objdump, err on the side of caution
2795 gcc_cv_as_cfi_directive=no
2798 gcc_cv_as_cfi_directive=yes
2802 gcc_cv_as_cfi_directive=yes
2805 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2806 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2810 .cfi_adjust_cfa_offset 64
2812 .cfi_adjust_cfa_offset 128
2815 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2816 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2817 gcc_cv_as_cfi_advance_working=yes
2821 # no objdump, err on the side of caution
2822 gcc_cv_as_cfi_advance_working=no
2824 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2825 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2826 [`if test $gcc_cv_as_cfi_directive = yes \
2827 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2828 [Define 0/1 if your assembler supports CFI directives.])
2830 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2831 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2832 gcc_cv_as_cfi_personality_directive, ,,
2835 .cfi_personality 0, symbol
2837 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2838 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2839 then echo 1; else echo 0; fi`],
2840 [Define 0/1 if your assembler supports .cfi_personality.])
2842 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2843 gcc_cv_as_cfi_sections_directive, ,,
2845 .cfi_sections .debug_frame, .eh_frame
2849 win32 | pe | cygwin* | mingw32*)
2850 # Need to check that we generated the correct relocation for the
2851 # .debug_frame section. This was fixed for binutils 2.21.
2852 gcc_cv_as_cfi_sections_directive=no
2853 if test "x$gcc_cv_objdump" != x; then
2854 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2855 grep secrel > /dev/null; then
2856 gcc_cv_as_cfi_sections_directive=yes
2861 gcc_cv_as_cfi_sections_directive=yes
2864 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2865 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2866 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2867 then echo 1; else echo 0; fi`],
2868 [Define 0/1 if your assembler supports .cfi_sections.])
2870 # GAS versions up to and including 2.11.0 may mis-optimize
2872 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2880 .section .eh_frame,"aw",@progbits
2882 .4byte .LECIE1-.LSCIE1
2896 .4byte .LEFDE1-.LASFDE1
2898 .4byte .LASFDE1-__FRAME_BEGIN__
2906 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2907 cat > conftest.lit <<EOF
2908 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2909 0010 01000000 12000000 18000000 00000000 ................
2910 0020 08000000 04080000 0044 .........D @&t@
2912 cat > conftest.big <<EOF
2913 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2914 0010 00000001 00000012 00000018 00000000 ................
2915 0020 00000008 04000000 0844 .........D @&t@
2917 # If the assembler didn't choke, and we can objdump,
2918 # and we got the correct data, then succeed.
2919 # The text in the here-document typically retains its unix-style line
2920 # endings, while the output of objdump will use host line endings.
2921 # Therefore, use diff -b for the comparisons.
2922 if test x$gcc_cv_objdump != x \
2923 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2924 | tail -3 > conftest.got \
2925 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2926 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2928 gcc_cv_as_eh_frame=yes
2929 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2930 gcc_cv_as_eh_frame=buggy
2932 # Uh oh, what do we do now?
2933 gcc_cv_as_eh_frame=no
2936 if test $gcc_cv_as_eh_frame = buggy; then
2937 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2938 [Define if your assembler mis-optimizes .eh_frame data.])
2941 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2942 [elf,2,12,0], [--fatal-warnings],
2943 [.section .rodata.str, "aMS", @progbits, 1])
2944 if test $gcc_cv_as_shf_merge = no; then
2945 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2946 [elf,2,12,0], [--fatal-warnings],
2947 [.section .rodata.str, "aMS", %progbits, 1])
2949 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2950 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2951 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2953 gcc_GAS_CHECK_FEATURE([stabs directive], gcc_cv_as_stabs_directive, ,,
2954 [.stabs "gcc2_compiled.",60,0,0,0],,
2955 [AC_DEFINE(HAVE_AS_STABS_DIRECTIVE, 1,
2956 [Define if your assembler supports .stabs.])])
2958 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2959 gcc_cv_as_comdat_group,
2960 [elf,2,16,0], [--fatal-warnings],
2961 [.section .text,"axG",@progbits,.foo,comdat])
2962 if test $gcc_cv_as_comdat_group = yes; then
2963 gcc_cv_as_comdat_group_percent=no
2964 gcc_cv_as_comdat_group_group=no
2966 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2967 gcc_cv_as_comdat_group_percent,
2968 [elf,2,16,0], [--fatal-warnings],
2969 [.section .text,"axG",%progbits,.foo,comdat])
2970 if test $gcc_cv_as_comdat_group_percent = yes; then
2971 gcc_cv_as_comdat_group_group=no
2974 # Sun as uses a completely different syntax.
2979 .group foo,".text%foo",#comdat
2980 .section ".text%foo", #alloc,#execinstr,#progbits
2985 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2987 .group foo,.text%foo,#comdat
2988 .section .text%foo, "ax", @progbits
2994 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
2995 gcc_cv_as_comdat_group_group,
2999 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
3000 gcc_cv_as_comdat_group_group=no
3004 if test x"$ld_is_gold" = xyes; then
3006 elif test $in_tree_ld = yes ; then
3008 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3009 && test $in_tree_ld_is_elf = yes; then
3012 elif echo "$ld_ver" | grep GNU > /dev/null; then
3014 if test 0"$ld_date" -lt 20050308; then
3015 if test -n "$ld_date"; then
3016 # If there was date string, but was earlier than 2005-03-08, fail
3018 elif test "$ld_vers_major" -lt 2; then
3020 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
3027 *-*-solaris2.1[1-9]*)
3029 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
3030 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
3033 # If using Sun as for COMDAT group as emitted by GCC, one needs at
3034 # least ld version 1.2267.
3035 if test "$ld_vers_major" -gt 1; then
3037 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
3039 elif test "$ld_vers_minor" -ge 2267; then
3044 # Assume linkers other than GNU ld don't support COMDAT group.
3050 # Allow overriding the automatic COMDAT group tests above.
3051 AC_ARG_ENABLE(comdat,
3052 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
3053 [comdat_group="$enable_comdat"])
3054 if test $comdat_group = no; then
3055 gcc_cv_as_comdat_group=no
3056 gcc_cv_as_comdat_group_percent=no
3057 gcc_cv_as_comdat_group_group=no
3059 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
3060 [`if test $gcc_cv_as_comdat_group = yes \
3061 || test $gcc_cv_as_comdat_group_percent = yes \
3062 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
3063 [Define 0/1 if your assembler and linker support COMDAT groups.])
3065 gcc_GAS_CHECK_FEATURE([line table discriminator support],
3066 gcc_cv_as_discriminator,
3070 .loc 1 1 0 discriminator 1],,
3071 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
3072 [Define if your assembler supports the .loc discriminator sub-directive.])])
3074 # Thread-local storage - the check is heavily parameterized.
3083 .section ".tdata","awT",@progbits
3086 ldq $27,__tls_get_addr($29) !literal!1
3087 lda $16,foo($29) !tlsgd!1
3088 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
3089 ldq $27,__tls_get_addr($29) !literal!2
3090 lda $16,foo($29) !tlsldm!2
3091 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
3092 ldq $1,foo($29) !gotdtprel
3093 ldah $2,foo($29) !dtprelhi
3094 lda $3,foo($2) !dtprello
3095 lda $4,foo($29) !dtprel
3096 ldq $1,foo($29) !gottprel
3097 ldah $2,foo($29) !tprelhi
3098 lda $3,foo($2) !tprello
3099 lda $4,foo($29) !tprel'
3102 tls_as_opt=--fatal-warnings
3106 add_s r0,r0, @foo@tpoff'
3110 cris-*-*|crisv32-*-*)
3112 .section ".tdata","awT",@progbits
3119 tls_as_opt=--fatal-warnings
3123 .section ".tdata","awT",@progbits
3135 .section ".tdata","awT",@progbits
3139 addil LT%foo-$tls_gdidx$,gp
3140 ldo RT%foo-$tls_gdidx$(%r1),%arg0
3143 addil LT%foo-$tls_ldidx$,gp
3145 ldo RT%foo-$tls_ldidx$(%r1),%arg0
3146 addil LR%foo-$tls_dtpoff$,%ret0
3147 ldo RR%foo-$tls_dtpoff$(%r1),%t1
3149 addil LT%foo-$tls_ieoff$,gp
3150 ldw RT%foo-$tls_ieoff$(%r1),%t2
3153 addil LR%foo-$tls_leoff$,%t1
3154 ldo RR%foo-$tls_leoff$(%r1),%t2'
3157 tls_as_opt=--fatal-warnings
3161 .section ".tdata","awT",%progbits
3172 i[34567]86-*-* | x86_64-*-*)
3174 i[34567]86-*-solaris2.* | x86_64-*-solaris2.1[0-9]*)
3181 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3183 .section .tdata,"awt",@progbits'
3188 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
3189 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
3193 .section ".tdata","awT",@progbits'
3197 tls_as_opt="--fatal-warnings"
3201 conftest_s="$conftest_s
3205 leal foo@tlsgd(,%ebx,1), %eax
3206 leal foo@tlsldm(%ebx), %eax
3207 leal foo@dtpoff(%eax), %edx
3208 movl foo@gottpoff(%ebx), %eax
3209 subl foo@gottpoff(%ebx), %eax
3210 addl foo@gotntpoff(%ebx), %eax
3211 movl foo@indntpoff, %eax
3212 movl \$foo@tpoff, %eax
3213 subl \$foo@tpoff, %eax
3214 leal foo@ntpoff(%ecx), %eax"
3217 if test x$on_solaris = xyes; then
3219 yes) tls_as_opt="$tls_as_opt --64" ;;
3220 no) tls_as_opt="$tls_as_opt -xarch=amd64" ;;
3223 conftest_s="$conftest_s
3227 leaq foo@tlsgd(%rip), %rdi
3228 leaq foo@tlsld(%rip), %rdi
3229 leaq foo@dtpoff(%rax), %rdx
3230 movq foo@gottpoff(%rip), %rax
3231 movq \$foo@tpoff, %rax"
3237 .section ".tdata","awT",@progbits
3240 addl r16 = @ltoff(@dtpmod(foo#)), gp
3241 addl r17 = @ltoff(@dtprel(foo#)), gp
3242 addl r18 = @ltoff(@tprel(foo#)), gp
3243 addl r19 = @dtprel(foo#), gp
3244 adds r21 = @dtprel(foo#), r13
3245 movl r23 = @dtprel(foo#)
3246 addl r20 = @tprel(foo#), gp
3247 adds r22 = @tprel(foo#), r13
3248 movl r24 = @tprel(foo#)'
3251 tls_as_opt=--fatal-warnings
3255 .section .tdata,"awT",@progbits
3259 addik r5,r20,x@TLSGD
3260 addik r5,r20,x@TLSLDM'
3263 tls_as_opt='--fatal-warnings'
3267 .section .tdata,"awT",@progbits
3271 addiu $4, $28, %tlsgd(x)
3272 addiu $4, $28, %tlsldm(x)
3273 lui $4, %dtprel_hi(x)
3274 addiu $4, $4, %dtprel_lo(x)
3275 lw $4, %gottprel(x)($28)
3276 lui $4, %tprel_hi(x)
3277 addiu $4, $4, %tprel_lo(x)'
3280 tls_as_opt='-32 --fatal-warnings'
3284 .section .tdata,"awT",@progbits
3289 move.l x@TLSGD(%a5),%a0
3290 move.l x@TLSLDM(%a5),%a0
3291 move.l x@TLSLDO(%a5),%a0
3292 move.l x@TLSIE(%a5),%a0
3293 move.l x@TLSLE(%a5),%a0'
3296 tls_as_opt='--fatal-warnings'
3300 .section ".tdata","awT",@progbits'
3303 tls_as_opt="--fatal-warnings"
3307 .section ".tdata","awT",%progbits
3311 add x0, x0, #:tlsgd_lo12:x
3316 tls_as_opt='--fatal-warnings'
3320 .extern __get_tpointer
3338 .section ".tdata","awT",@progbits
3346 addi 3,2,ld0@got@tlsgd
3352 addi 3,2,x1@got@tlsld
3358 addis 9,3,x2@dtprel@ha
3359 addi 9,9,x2@dtprel@l
3362 ld 9,x3@got@dtprel(2)
3368 tls_as_opt="-a64 --fatal-warnings"
3372 .section ".tdata","awT",@progbits
3380 addi 3,31,ld0@got@tlsgd
3382 addi 3,31,x1@got@tlsld
3385 addis 9,3,x2@dtprel@ha
3386 addi 9,9,x2@dtprel@l
3387 lwz 9,x3@got@tprel(31)
3390 addis 9,2,x2@tprel@ha
3391 addi 9,9,x2@tprel@l'
3394 tls_as_opt="-a32 --fatal-warnings"
3398 .section ".tdata","awT",@progbits
3407 l %r1,foo@GOTNTPOFF(%r12)
3408 l %r1,0(%r1):tls_load:foo
3409 bas %r14,0(%r1,%r13):tls_gdcall:foo
3410 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3413 tls_as_opt="-m31 --fatal-warnings"
3417 .section ".tdata","awT",@progbits
3425 lg %r1,foo@GOTNTPOFF(%r12)
3426 larl %r1,foo@INDNTPOFF
3427 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3428 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3431 tls_as_opt="-m64 -Aesame --fatal-warnings"
3433 sh-*-* | sh[123456789lbe]*-*-*)
3435 .section ".tdata","awT",@progbits
3445 tls_as_opt=--fatal-warnings
3449 sparc*-sun-solaris2.*)
3456 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3458 .section ".tdata",#alloc,#write,#tls'
3463 .section ".tdata","awT",@progbits'
3466 tls_as_opt="-32 --fatal-warnings"
3468 conftest_s="$conftest_s
3471 sethi %tgd_hi22(foo), %o0
3472 add %o0, %tgd_lo10(foo), %o1
3473 add %l7, %o1, %o0, %tgd_add(foo)
3474 call __tls_get_addr, %tgd_call(foo)
3475 sethi %tldm_hi22(foo), %l1
3476 add %l1, %tldm_lo10(foo), %l2
3477 add %l7, %l2, %o0, %tldm_add(foo)
3478 call __tls_get_addr, %tldm_call(foo)
3479 sethi %tldo_hix22(foo), %l3
3480 xor %l3, %tldo_lox10(foo), %l4
3481 add %o0, %l4, %l5, %tldo_add(foo)
3482 sethi %tie_hi22(foo), %o3
3483 add %o3, %tie_lo10(foo), %o3
3484 ld [%l7 + %o3], %o2, %tie_ld(foo)
3485 add %g7, %o2, %o4, %tie_add(foo)
3486 sethi %tle_hix22(foo), %l1
3487 xor %l1, %tle_lox10(foo), %o5
3488 ld [%g7 + %o5], %o1"
3492 .section ".tdata","awT",@progbits
3495 addli r0, zero, tls_gd(foo)
3496 auli r0, zero, tls_gd_ha16(foo)
3497 addli r0, r0, tls_gd_lo16(foo)
3499 addli r0, zero, tls_ie(foo)
3500 auli r0, r0, tls_ie_ha16(foo)
3501 addli r0, r0, tls_ie_lo16(foo)'
3504 tls_as_opt="--fatal-warnings"
3508 .section ".tdata","awT",@progbits
3511 shl16insli r0, zero, hw0_last_tls_gd(foo)
3512 shl16insli r0, zero, hw1_last_tls_gd(foo)
3513 shl16insli r0, r0, hw0_tls_gd(foo)
3515 shl16insli r0, zero, hw1_last_tls_ie(foo)
3516 shl16insli r0, r0, hw0_tls_ie(foo)'
3519 tls_as_opt="--fatal-warnings"
3523 .section ".tdata","awT",@progbits
3526 movi a8, foo@TLSFUNC
3527 movi a10, foo@TLSARG
3528 callx8.tls a8, foo@TLSCALL'
3535 if test "x$enable_tls" = xno ; then
3536 : # TLS explicitly disabled.
3537 elif test "x$enable_tls" = xyes ; then
3538 set_have_as_tls=yes # TLS explicitly enabled.
3539 elif test -z "$tls_first_major"; then
3540 : # If we don't have a check, assume no support.
3542 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3543 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3544 [set_have_as_tls=yes])
3546 if test $set_have_as_tls = yes ; then
3547 AC_DEFINE(HAVE_AS_TLS, 1,
3548 [Define if your assembler and linker support thread-local storage.])
3551 # Target-specific assembler checks.
3553 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3554 gcc_cv_ld_static_dynamic=no
3555 gcc_cv_ld_static_option='-Bstatic'
3556 gcc_cv_ld_dynamic_option='-Bdynamic'
3557 if test $in_tree_ld = yes ; then
3558 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3559 gcc_cv_ld_static_dynamic=yes
3561 elif test x$gcc_cv_ld != x; then
3562 # Check if linker supports -Bstatic/-Bdynamic option
3563 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3564 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3565 gcc_cv_ld_static_dynamic=yes
3568 # AIX ld uses -b flags
3569 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
3570 gcc_cv_ld_static_dynamic=yes
3571 gcc_cv_ld_static_option="-bstatic"
3572 gcc_cv_ld_dynamic_option="-bdynamic"
3574 # HP-UX ld uses -a flags to select between shared and archive.
3576 if test x"$gnu_ld" = xno; then
3577 gcc_cv_ld_static_dynamic=yes
3578 gcc_cv_ld_static_option="-aarchive_shared"
3579 gcc_cv_ld_dynamic_option="-adefault"
3582 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3584 gcc_cv_ld_static_dynamic=yes
3589 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3590 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3591 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3592 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3593 [Define to the linker option to disable use of shared objects.])
3594 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3595 [Define to the linker option to enable use of shared objects.])
3597 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3599 if test x"$demangler_in_ld" = xyes; then
3600 AC_MSG_CHECKING(linker --demangle support)
3601 gcc_cv_ld_demangle=no
3602 if test $in_tree_ld = yes; then
3603 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3604 gcc_cv_ld_demangle=yes
3606 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3607 # Check if the GNU linker supports --demangle option
3608 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3609 gcc_cv_ld_demangle=yes
3612 if test x"$gcc_cv_ld_demangle" = xyes; then
3613 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3614 [Define if your linker supports --demangle option.])
3616 AC_MSG_RESULT($gcc_cv_ld_demangle)
3619 AC_MSG_CHECKING(linker plugin support)
3621 if test -f liblto_plugin.la; then
3622 save_ld_ver="$ld_ver"
3623 save_ld_vers_major="$ld_vers_major"
3624 save_ld_vers_minor="$ld_vers_minor"
3625 save_ld_is_gold="$ld_is_gold"
3629 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3631 # FIXME: ld_is_gold?
3632 ld_vers_major="$gcc_cv_gld_major_version"
3633 ld_vers_minor="$gcc_cv_gld_minor_version"
3635 # Determine plugin linker version.
3636 # FIXME: Partial duplicate from above, generalize.
3638 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3639 if echo "$ld_ver" | grep GNU > /dev/null; then
3640 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3642 ld_vers=`echo $ld_ver | sed -n \
3643 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3645 ld_vers=`echo $ld_ver | sed -n \
3646 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3648 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3649 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3654 # Determine plugin support.
3655 if echo "$ld_ver" | grep GNU > /dev/null; then
3656 # Require GNU ld or gold 2.21+ for plugin support by default.
3657 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3659 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3660 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3665 ld_ver="$save_ld_ver"
3666 ld_vers_major="$save_ld_vers_major"
3667 ld_vers_minor="$save_ld_vers_minor"
3668 ld_is_gold="$save_ld_is_gold"
3670 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3671 [Define to the level of your linker's plugin support.])
3672 AC_MSG_RESULT($gcc_cv_lto_plugin)
3674 # Target OS-specific assembler checks.
3676 case "$target_os" in
3678 gcc_GAS_CHECK_FEATURE([-mmacosx-version-min option],
3679 gcc_cv_as_mmacosx_version_min,,
3680 [-mmacosx-version-min=10.1], [.text],,
3681 [AC_DEFINE(HAVE_AS_MMACOSX_VERSION_MIN_OPTION, 1,
3682 [Define if your Mac OS X assembler supports the -mmacos-version-min option.])])
3686 # Target CPU-specific assembler checks.
3690 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,,
3691 [-mabi=lp64], [.text],,,)
3692 if test x$gcc_cv_as_aarch64_mabi = xyes; then
3693 AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
3694 [Define if your assembler supports the -mabi option.])
3696 if test x$with_abi = xilp32; then
3697 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3698 Upgrade the Assembler.])
3700 if test x"$with_multilib_list" = xdefault; then
3701 TM_MULTILIB_CONFIG=lp64
3703 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
3704 for aarch64_multilib in ${aarch64_multilibs}; do
3705 case ${aarch64_multilib} in
3707 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3708 Upgrade the Assembler.])
3716 # Check if we have binutils support for relocations types needed by -fpic
3717 gcc_GAS_CHECK_FEATURE([-fpic relocs], gcc_cv_as_aarch64_picreloc,,,
3720 ldr x0, [[x2, #:gotpage_lo15:globalsym]]
3721 ],,[AC_DEFINE(HAVE_AS_SMALL_PIC_RELOCS, 1,
3722 [Define if your assembler supports relocs needed by -fpic.])])
3723 # Enable default workaround for AArch64 Cortex-A53 erratum 835769.
3724 AC_ARG_ENABLE(fix-cortex-a53-835769,
3726 AS_HELP_STRING([--enable-fix-cortex-a53-835769],
3727 [enable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3728 AS_HELP_STRING([--disable-fix-cortex-a53-835769],
3729 [disable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3734 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1"
3739 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\
3740 Valid choices are 'yes' and 'no'.])
3746 # Enable default workaround for AArch64 Cortex-A53 erratum 843419.
3747 AC_ARG_ENABLE(fix-cortex-a53-843419,
3749 AS_HELP_STRING([--enable-fix-cortex-a53-843419],
3750 [enable workaround for AArch64 Cortex-A53 erratum 843419 by default])
3751 AS_HELP_STRING([--disable-fix-cortex-a53-843419],
3752 [disable workaround for AArch64 Cortex-A53 erratum 843419 by default])
3757 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1"
3762 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\
3763 Valid choices are 'yes' and 'no'.])
3771 # All TARGET_ABI_OSF targets.
3772 alpha*-*-linux* | alpha*-*-*bsd*)
3773 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3774 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3777 extbl $3, $2, $3 !lituse_bytoff!1
3778 ldq $2, a($29) !literal!1
3779 ldq $4, b($29) !literal!2
3780 ldq_u $3, 0($2) !lituse_base!1
3781 ldq $27, f($29) !literal!5
3782 jsr $26, ($27), f !lituse_jsr!5
3783 ldah $29, 0($26) !gpdisp!3
3784 lda $0, c($29) !gprel
3785 ldah $1, d($29) !gprelhigh
3786 lda $1, d($1) !gprellow
3787 lda $29, 0($29) !gpdisp!3],,
3788 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3789 [Define if your assembler supports explicit relocations.])])
3790 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3791 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3794 ldq $27, a($29) !literal!1
3795 jsr $26, ($27), a !lituse_jsrdirect!1],,
3796 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3797 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3801 gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax,,
3802 [--mlink-relax], [.text],,
3803 [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1,
3804 [Define if your avr assembler supports --mlink-relax option.])])
3806 gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,,
3808 [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1,
3809 [Define if your avr assembler supports -mrmw option.])])
3813 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3814 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3815 [-no-mul-bug-abort], [.text],,
3816 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3817 [Define if your assembler supports the -no-mul-bug-abort option.])])
3821 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3822 [.register %g2, #scratch],,
3823 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3824 [Define if your assembler supports .register.])])
3826 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3828 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3829 [Define if your assembler supports -relax option.])])
3831 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3832 gcc_cv_as_sparc_gotdata_op,,
3839 sethi %gdop_hix22(foo), %g1
3840 xor %g1, %gdop_lox10(foo), %g1
3841 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3842 [if test x$gcc_cv_ld != x \
3843 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3844 if test x$gcc_cv_objdump != x; then
3845 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3846 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3847 gcc_cv_as_sparc_gotdata_op=no
3849 gcc_cv_as_sparc_gotdata_op=yes
3854 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3855 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3857 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3858 gcc_cv_as_sparc_ua_pcrel,,
3866 .uaword %r_disp32(foo)],
3867 [if test x$gcc_cv_ld != x \
3868 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3869 gcc_cv_as_sparc_ua_pcrel=yes
3872 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3873 [Define if your assembler and linker support unaligned PC relative relocs.])
3875 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3876 gcc_cv_as_sparc_ua_pcrel_hidden,,
3881 .uaword %r_disp32(foo)
3882 .byte 0x32, 0x33, 0x34
3887 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3888 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3889 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3890 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3891 if $gcc_cv_objdump -R conftest 2> /dev/null \
3892 | grep 'DISP32' > /dev/null 2>&1; then
3895 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3899 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3900 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3901 ]) # unaligned pcrel relocs
3903 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3904 gcc_cv_as_sparc_offsetable_lo10,,
3907 or %g1, %lo(ab) + 12, %g1
3908 or %g1, %lo(ab + 12), %g1],
3909 [if test x$gcc_cv_objdump != x \
3910 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3911 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3912 gcc_cv_as_sparc_offsetable_lo10=yes
3914 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3915 [Define if your assembler supports offsetable %lo().])])
3917 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
3918 gcc_cv_as_sparc_fmaf,,
3921 .register %g2, #scratch
3922 .register %g3, #scratch
3924 fmaddd %f0, %f2, %f4, %f6
3925 addxccc %g1, %g2, %g3
3926 fsrl32 %f2, %f4, %f8
3927 fnaddd %f10, %f12, %f14],,
3928 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
3929 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
3931 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
3932 gcc_cv_as_sparc_sparc4,,
3935 .register %g2, #scratch
3936 .register %g3, #scratch
3939 1: cwbneg %g2, %g3, 1f
3942 aes_kexpand0 %f4, %f6, %f8
3943 des_round %f38, %f40, %f42, %f44
3944 camellia_f %f54, %f56, %f58, %f60
3945 kasumi_fi_xor %f46, %f48, %f50, %f52],,
3946 [AC_DEFINE(HAVE_AS_SPARC4, 1,
3947 [Define if your assembler supports SPARC4 instructions.])])
3949 gcc_GAS_CHECK_FEATURE([SPARC5 and VIS 4.0 instructions],
3950 gcc_cv_as_sparc_sparc5,,
3953 .register %g2, #scratch
3954 .register %g3, #scratch
3957 fpadd8 %f0, %f2, %f4],,
3958 [AC_DEFINE(HAVE_AS_SPARC5_VIS4, 1,
3959 [Define if your assembler supports SPARC5 and VIS 4.0 instructions.])])
3961 gcc_GAS_CHECK_FEATURE([LEON instructions],
3962 gcc_cv_as_sparc_leon,,
3965 .register %g2, #scratch
3966 .register %g3, #scratch
3970 casa [[%g2]] 0xb, %g3, %g1],,
3971 [AC_DEFINE(HAVE_AS_LEON, 1,
3972 [Define if your assembler supports LEON instructions.])])
3976 i[34567]86-*-* | x86_64-*-*)
3980 # Full C++ conformance when using a shared libstdc++-v3 requires some
3981 # support from the Cygwin DLL, which in more recent versions exports
3982 # wrappers to aid in interposing and redirecting operators new, delete,
3983 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3984 # are configuring for a version of Cygwin that exports the wrappers.
3985 if test x$host = x$target && test x$host_cpu = xi686; then
3986 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3988 # Can't check presence of libc functions during cross-compile, so
3989 # we just have to assume we're building for an up-to-date target.
3990 gcc_ac_cygwin_dll_wrappers=yes
3992 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3993 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3994 [Define if you want to generate code by default that assumes that the
3995 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3998 cygwin* | pe | mingw32*)
3999 # Recent binutils allows the three-operand form of ".comm" on PE. This
4000 # definition is used unconditionally to initialise the default state of
4001 # the target option variable that governs usage of the feature.
4002 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
4003 [2,19,52],,[.comm foo,1,32])
4004 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
4005 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
4006 [Define if your assembler supports specifying the alignment
4007 of objects allocated using the GAS .comm command.])
4008 # Used for DWARF 2 in PE
4009 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
4010 gcc_cv_as_ix86_pe_secrel32,
4016 [if test x$gcc_cv_ld != x \
4017 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
4018 gcc_cv_as_ix86_pe_secrel32=yes
4021 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
4022 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
4023 # Test if the assembler supports the extended form of the .section
4024 # directive that specifies section alignment. LTO support uses this,
4025 # but normally only after installation, so we warn but don't fail the
4026 # configure if LTO is enabled but the assembler does not support it.
4027 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
4028 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
4029 if test x$gcc_cv_as_section_has_align != xyes; then
4030 case ",$enable_languages," in
4032 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
4039 # Test if the assembler supports the section flag 'e' for specifying
4040 # an excluded section.
4041 gcc_GAS_CHECK_FEATURE([.section with e], gcc_cv_as_section_has_e,
4042 [2,22,51], [--fatal-warnings],
4045 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
4046 [`if test $gcc_cv_as_section_has_e = yes; then echo 1; else echo 0; fi`],
4047 [Define if your assembler supports specifying the section flag e.])
4049 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
4050 gcc_cv_as_ix86_filds,,,
4051 [filds (%ebp); fists (%ebp)],,
4052 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
4053 [Define if your assembler uses filds and fists mnemonics.])])
4055 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
4056 gcc_cv_as_ix86_fildq,,,
4057 [fildq (%ebp); fistpq (%ebp)],,
4058 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
4059 [Define if your assembler uses fildq and fistq mnemonics.])])
4061 gcc_GAS_CHECK_FEATURE([cmov syntax],
4062 gcc_cv_as_ix86_cmov_sun_syntax,,,
4063 [cmovl.l %edx, %eax],,
4064 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
4065 [Define if your assembler supports the Sun syntax for cmov.])])
4067 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
4068 gcc_cv_as_ix86_ffreep,,,
4070 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
4071 [Define if your assembler supports the ffreep mnemonic.])])
4073 gcc_GAS_CHECK_FEATURE([.quad directive],
4074 gcc_cv_as_ix86_quad,,,
4076 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
4077 [Define if your assembler supports the .quad directive.])])
4079 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
4080 gcc_cv_as_ix86_sahf,,,
4083 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
4084 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
4086 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
4087 gcc_cv_as_ix86_interunit_movq,,,
4091 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
4092 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
4093 [Define if your assembler supports interunit movq mnemonic.])
4095 gcc_GAS_CHECK_FEATURE([hle prefixes],
4096 gcc_cv_as_ix86_hle,,,
4097 [lock xacquire cmpxchg %esi, (%ecx)],,
4098 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
4099 [Define if your assembler supports HLE prefixes.])])
4101 gcc_GAS_CHECK_FEATURE([swap suffix],
4102 gcc_cv_as_ix86_swap,,,
4103 [movl.s %esp, %ebp],,
4104 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
4105 [Define if your assembler supports the swap suffix.])])
4107 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
4108 gcc_cv_as_ix86_diff_sect_delta,,,
4116 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
4117 [Define if your assembler supports the subtraction of symbols in different sections.])])
4119 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
4120 gcc_cv_as_ix86_rep_lock_prefix,,,
4126 lock addl %edi, (%eax,%esi)
4127 lock orl $0, (%esp)],,
4128 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
4129 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
4131 gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
4132 gcc_cv_as_ix86_ud2,,,
4134 [AC_DEFINE(HAVE_AS_IX86_UD2, 1,
4135 [Define if your assembler supports the 'ud2' mnemonic.])])
4137 # Enforce 32-bit output with gas and gld.
4138 if test x$gas = xyes; then
4139 as_ix86_gas_32_opt="--32"
4141 if echo "$ld_ver" | grep GNU > /dev/null; then
4142 if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then
4143 ld_ix86_gld_32_opt="-melf_i386_sol2"
4145 ld_ix86_gld_32_opt="-melf_i386"
4149 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
4150 gcc_cv_as_ix86_tlsgdplt,,
4151 [$as_ix86_gas_32_opt],
4152 [call tls_gd@tlsgdplt],
4153 [if test x$gcc_cv_ld != x \
4154 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4155 gcc_cv_as_ix86_tlsgdplt=yes
4158 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
4159 [Define if your assembler and linker support @tlsgdplt.])])
4162 .section .tdata,"aw'$tls_section_flag'",@progbits
4164 .section .text,"ax",@progbits
4165 call tls_ld@tlsldmplt'
4167 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
4168 gcc_cv_as_ix86_tlsldmplt,,
4169 [$as_ix86_gas_32_opt],
4171 [if test x$gcc_cv_ld != x \
4172 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4173 gcc_cv_as_ix86_tlsldmplt=yes
4176 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT,
4177 [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`],
4178 [Define to 1 if your assembler and linker support @tlsldmplt.])
4181 .section .text,"ax",@progbits
4183 .type _start, @function
4185 leal value@tlsldm(%ebx), %eax
4186 call ___tls_get_addr@plt
4188 .section .tdata,"aw'$tls_section_flag'",@progbits
4189 .type value, @object
4191 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc],
4192 gcc_cv_as_ix86_tlsldm,,
4193 [$as_ix86_gas_32_opt],
4195 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4196 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then
4197 if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \
4198 || dis conftest 2>/dev/null | grep nop > /dev/null; then
4199 gcc_cv_as_ix86_tlsldm=yes
4203 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM,
4204 [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`],
4205 [Define to 1 if your assembler and linker support @tlsldm.])
4216 gcc_GAS_CHECK_FEATURE([R_386_GOT32X reloc],
4217 gcc_cv_as_ix86_got32x,,
4218 [$as_ix86_gas_32_opt],
4220 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4221 && test x$gcc_cv_readelf != x \
4222 && $gcc_cv_readelf --relocs --wide conftest.o 2>&1 \
4223 | grep R_386_GOT32X > /dev/null 2>&1 \
4224 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4225 if $gcc_cv_objdump -dw conftest 2>&1 \
4226 | grep 0xffffff > /dev/null 2>&1; then
4227 gcc_cv_as_ix86_got32x=no
4229 gcc_cv_as_ix86_got32x=yes
4233 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_GOT32X,
4234 [`if test x"$gcc_cv_as_ix86_got32x" = xyes; then echo 1; else echo 0; fi`],
4235 [Define 0/1 if your assembler and linker support @GOT.])
4237 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
4238 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],
4239 [$as_ix86_gas_32_opt],
4245 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
4246 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
4247 [Define true if the assembler supports '.long foo@GOTOFF'.])
4250 .section .text,"ax",@progbits
4252 .type _start, @function
4254 leal ld@tlsldm(%ecx), %eax
4255 call *___tls_get_addr@GOT(%ecx)
4256 leal gd@tlsgd(%ecx), %eax
4257 call *___tls_get_addr@GOT(%ecx)
4259 .section .tdata,"aw'$tls_section_flag'",@progbits
4267 gcc_GAS_CHECK_FEATURE([calling ___tls_get_addr via GOT],
4268 gcc_cv_as_ix86_tls_get_addr_via_got,,
4269 [$as_ix86_gas_32_opt],
4271 [if test x$gcc_cv_ld != x \
4272 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4273 gcc_cv_as_ix86_tls_get_addr_via_got=yes
4276 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLS_GET_ADDR_GOT,
4277 [`if test x"$gcc_cv_as_ix86_tls_get_addr_via_got" = xyes; then echo 1; else echo 0; fi`],
4278 [Define 0/1 if your assembler and linker support calling ___tls_get_addr via GOT.])
4282 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
4283 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
4285 addl r15 = @ltoffx(x#), gp
4287 ld8.mov r16 = [[r15]], x#],,
4288 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
4289 [Define if your assembler supports ltoffx and ldxmov relocations.])])
4297 gcc_GAS_CHECK_FEATURE([.machine directive support],
4298 gcc_cv_as_machine_directive,,,
4299 [ .machine ppc7400])
4300 if test x$gcc_cv_as_machine_directive != xyes; then
4301 echo "*** This target requires an assembler supporting \".machine\"" >&2
4302 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
4303 test x$build = x$target && exit 1
4309 *-*-aix*) conftest_s=' .machine "pwr5"
4312 *-*-darwin*) conftest_s=' .text
4314 *) conftest_s=' .machine power4
4319 gcc_GAS_CHECK_FEATURE([mfcr field support],
4320 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
4322 [AC_DEFINE(HAVE_AS_MFCRF, 1,
4323 [Define if your assembler supports mfcr field.])])
4326 *-*-aix*) conftest_s=' .machine "pwr5"
4329 *) conftest_s=' .machine power5
4334 gcc_GAS_CHECK_FEATURE([popcntb support],
4335 gcc_cv_as_powerpc_popcntb, [2,17,0],,
4337 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
4338 [Define if your assembler supports popcntb field.])])
4341 *-*-aix*) conftest_s=' .machine "pwr5x"
4344 *) conftest_s=' .machine power5
4349 gcc_GAS_CHECK_FEATURE([fp round support],
4350 gcc_cv_as_powerpc_fprnd, [2,17,0],,
4352 [AC_DEFINE(HAVE_AS_FPRND, 1,
4353 [Define if your assembler supports fprnd.])])
4356 *-*-aix*) conftest_s=' .machine "pwr6"
4359 *) conftest_s=' .machine power6
4364 gcc_GAS_CHECK_FEATURE([move fp gpr support],
4365 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
4367 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
4368 [Define if your assembler supports mffgpr and mftgpr.])])
4371 *-*-aix*) conftest_s=' .csect .text[[PR]]
4373 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
4377 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
4378 *) conftest_s=' .text
4380 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
4383 gcc_GAS_CHECK_FEATURE([rel16 relocs],
4384 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
4386 [AC_DEFINE(HAVE_AS_REL16, 1,
4387 [Define if your assembler supports R_PPC_REL16 relocs.])])
4390 *-*-aix*) conftest_s=' .machine "pwr6"
4393 *) conftest_s=' .machine power6
4398 gcc_GAS_CHECK_FEATURE([compare bytes support],
4399 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
4401 [AC_DEFINE(HAVE_AS_CMPB, 1,
4402 [Define if your assembler supports cmpb.])])
4405 *-*-aix*) conftest_s=' .machine "pwr6"
4408 *) conftest_s=' .machine power6
4413 gcc_GAS_CHECK_FEATURE([decimal float support],
4414 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
4416 [AC_DEFINE(HAVE_AS_DFP, 1,
4417 [Define if your assembler supports DFP instructions.])])
4420 *-*-aix*) conftest_s=' .machine "pwr7"
4423 *) conftest_s=' .machine power7
4428 gcc_GAS_CHECK_FEATURE([vector-scalar support],
4429 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
4431 [AC_DEFINE(HAVE_AS_VSX, 1,
4432 [Define if your assembler supports VSX instructions.])])
4435 *-*-aix*) conftest_s=' .machine "pwr7"
4438 *) conftest_s=' .machine power7
4443 gcc_GAS_CHECK_FEATURE([popcntd support],
4444 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
4446 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
4447 [Define if your assembler supports POPCNTD instructions.])])
4450 *-*-aix*) conftest_s=' .machine "pwr8"
4451 .csect .text[[PR]]';;
4452 *) conftest_s=' .machine power8
4456 gcc_GAS_CHECK_FEATURE([power8 support],
4457 gcc_cv_as_powerpc_power8, [2,19,2], -a32,
4459 [AC_DEFINE(HAVE_AS_POWER8, 1,
4460 [Define if your assembler supports POWER8 instructions.])])
4463 *-*-aix*) conftest_s=' .machine "pwr9"
4464 .csect .text[[PR]]';;
4465 *) conftest_s=' .machine power9
4469 gcc_GAS_CHECK_FEATURE([power9 support],
4470 gcc_cv_as_powerpc_power9, [2,19,2], -a32,
4472 [AC_DEFINE(HAVE_AS_POWER9, 1,
4473 [Define if your assembler supports POWER9 instructions.])])
4476 *-*-aix*) conftest_s=' .csect .text[[PR]]
4478 *) conftest_s=' .text
4482 gcc_GAS_CHECK_FEATURE([lwsync support],
4483 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
4485 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
4486 [Define if your assembler supports LWSYNC instructions.])])
4489 *-*-aix*) conftest_s=' .machine "476"
4492 *) conftest_s=' .machine "476"
4497 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
4498 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
4500 [AC_DEFINE(HAVE_AS_DCI, 1,
4501 [Define if your assembler supports the DCI/ICI instructions.])])
4503 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4504 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
4505 [.gnu_attribute 4,1],,
4506 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4507 [Define if your assembler supports .gnu_attribute.])])
4509 gcc_GAS_CHECK_FEATURE([tls marker support],
4510 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
4511 [ bl __tls_get_addr(x@tlsgd)],,
4512 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
4513 [Define if your assembler supports arg info for __tls_get_addr.])])
4515 gcc_GAS_CHECK_FEATURE([prologue entry point marker support],
4516 gcc_cv_as_powerpc_entry_markers, [2,26,0],-a64 --fatal-warnings,
4517 [ .reloc .,R_PPC64_ENTRY; nop],,
4518 [AC_DEFINE(HAVE_AS_ENTRY_MARKERS, 1,
4519 [Define if your assembler supports the R_PPC64_ENTRY relocation.])])
4523 gcc_GAS_CHECK_FEATURE([AIX .ref support],
4524 gcc_cv_as_aix_ref, [2,21,0],,
4525 [ .csect stuff[[rw]]
4531 [AC_DEFINE(HAVE_AS_REF, 1,
4532 [Define if your assembler supports .ref])])
4534 gcc_GAS_CHECK_FEATURE([AIX DWARF location lists section support],
4535 gcc_cv_as_aix_dwloc, [2,21,0],,
4540 [AC_DEFINE(HAVE_XCOFF_DWARF_EXTRAS, 1,
4541 [Define if your assembler supports AIX debug frame section label reference.])])
4547 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4548 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
4549 [ lw $4,%gp_rel(foo)($4)],,
4550 [if test x$target_cpu_default = x
4551 then target_cpu_default=MASK_EXPLICIT_RELOCS
4552 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
4555 gcc_GAS_CHECK_FEATURE([-mno-shared support],
4556 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
4557 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
4558 [Define if the assembler understands -mno-shared.])])
4560 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4561 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
4562 [.gnu_attribute 4,1],,
4563 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4564 [Define if your assembler supports .gnu_attribute.])])
4566 gcc_GAS_CHECK_FEATURE([.module support],
4567 gcc_cv_as_mips_dot_module,,[-32],
4570 [AC_DEFINE(HAVE_AS_DOT_MODULE, 1,
4571 [Define if your assembler supports .module.])])
4572 if test x$gcc_cv_as_mips_dot_module = xno \
4573 && test x$with_fp_32 != x; then
4575 [Requesting --with-fp-32= requires assembler support for .module.])
4578 gcc_GAS_CHECK_FEATURE([.micromips support],
4579 gcc_cv_as_micromips_support,,[--fatal-warnings],
4581 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
4582 [Define if your assembler supports the .set micromips directive])])
4584 gcc_GAS_CHECK_FEATURE([.dtprelword support],
4585 gcc_cv_as_mips_dtprelword, [2,18,0],,
4586 [.section .tdata,"awT",@progbits
4590 .dtprelword x+0x8000],,
4591 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
4592 [Define if your assembler supports .dtprelword.])])
4594 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
4595 gcc_cv_as_mips_dspr1_mult,,,
4605 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
4606 [Define if your assembler supports DSPR1 mult.])])
4608 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
4609 gcc_cv_as_ld_jalr_reloc=no
4610 if test $gcc_cv_as_mips_explicit_relocs = yes; then
4611 if test $in_tree_ld = yes ; then
4612 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
4613 && test $in_tree_ld_is_elf = yes; then
4614 gcc_cv_as_ld_jalr_reloc=yes
4616 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4617 echo ' .ent x' > conftest.s
4618 echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s
4619 echo ' lw $25,%call16(y)($28)' >> conftest.s
4620 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
4621 echo '1: jalr $25' >> conftest.s
4622 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
4623 echo '1: jalr $25' >> conftest.s
4624 echo ' .end x' >> conftest.s
4625 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4626 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4627 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4628 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4629 gcc_cv_as_ld_jalr_reloc=yes
4635 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4636 if test x$target_cpu_default = x; then
4637 target_cpu_default=MASK_RELAX_PIC_CALLS
4639 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4642 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4644 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4645 [gcc_cv_ld_mips_personality_relaxation],
4646 [gcc_cv_ld_mips_personality_relaxation=no
4647 if test $in_tree_ld = yes ; then
4648 if test "$gcc_cv_gld_major_version" -eq 2 \
4649 -a "$gcc_cv_gld_minor_version" -ge 21 \
4650 -o "$gcc_cv_gld_major_version" -gt 2; then
4651 gcc_cv_ld_mips_personality_relaxation=yes
4653 elif test x$gcc_cv_as != x \
4654 -a x$gcc_cv_ld != x \
4655 -a x$gcc_cv_readelf != x ; then
4656 cat > conftest.s <<EOF
4658 .cfi_personality 0x80,indirect_ptr
4665 .section .data,"aw",@progbits
4669 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4670 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4671 if $gcc_cv_readelf -d conftest 2>&1 \
4672 | grep TEXTREL > /dev/null 2>&1; then
4674 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4675 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4678 gcc_cv_ld_mips_personality_relaxation=yes
4682 rm -f conftest.s conftest.o conftest])
4683 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4684 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4685 [Define if your linker can relax absolute .eh_frame personality
4686 pointers into PC-relative form.])
4689 gcc_GAS_CHECK_FEATURE([-mnan= support],
4690 gcc_cv_as_mips_nan,,
4692 [AC_DEFINE(HAVE_AS_NAN, 1,
4693 [Define if the assembler understands -mnan=.])])
4694 if test x$gcc_cv_as_mips_nan = xno \
4695 && test x$with_nan != x; then
4697 [Requesting --with-nan= requires assembler support for -mnan=])
4701 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4702 gcc_cv_as_s390_gnu_attribute, [2,18,0],,
4703 [.gnu_attribute 8,1],,
4704 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4705 [Define if your assembler supports .gnu_attribute.])])
4706 gcc_GAS_CHECK_FEATURE([.machine and .machinemode support],
4707 gcc_cv_as_s390_machine_machinemode, [2,24,0],,
4712 [AC_DEFINE(HAVE_AS_MACHINE_MACHINEMODE, 1,
4713 [Define if your assembler supports .machine and .machinemode.])])
4714 gcc_GAS_CHECK_FEATURE([architecture modifiers support],
4715 gcc_cv_as_s390_architecture_modifiers, [2,26,0],,
4716 [ .machine z13+vx ],,
4717 [AC_DEFINE(HAVE_AS_ARCHITECTURE_MODIFIERS, 1,
4718 [Define if your assembler supports architecture modifiers.])])
4722 # Mips and HP-UX need the GNU assembler.
4723 # Linux on IA64 might be able to use the Intel assembler.
4726 mips*-*-* | *-*-hpux* )
4727 if test x$gas_flag = xyes \
4728 || test x"$host" != x"$build" \
4729 || test ! -x "$gcc_cv_as" \
4730 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4733 echo "*** This configuration requires the GNU assembler" >&2
4739 # ??? Not all targets support dwarf2 debug_line, even within a version
4740 # of gas. Moreover, we need to emit a valid instruction to trigger any
4741 # info to the output file. So, as supported targets are added to gas 2.11,
4742 # add some instruction here to (also) show we expect this might work.
4743 # ??? Once 2.11 is released, probably need to add first known working
4744 # version to the per-target configury.
4746 aarch64 | alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze \
4747 | mips | nios2 | pa | rs6000 | score | sparc | spu | tilegx | tilepro \
4748 | visium | xstormy16 | xtensa)
4758 if test x"$insn" != x; then
4760 .file 1 \"conftest.s\"
4763 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4764 gcc_cv_as_dwarf2_debug_line,
4765 [elf,2,11,0],, [$conftest_s],
4766 [if test x$gcc_cv_objdump != x \
4767 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4768 | grep debug_line > /dev/null 2>&1; then
4769 gcc_cv_as_dwarf2_debug_line=yes
4772 # The .debug_line file table must be in the exact order that
4773 # we specified the files, since these indices are also used
4774 # by DW_AT_decl_file. Approximate this test by testing if
4775 # the assembler bitches if the same index is assigned twice.
4776 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4777 gcc_cv_as_dwarf2_file_buggy,,,
4781 if test $gcc_cv_as_dwarf2_debug_line = yes \
4782 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4783 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4784 [Define if your assembler supports dwarf2 .file/.loc directives,
4785 and preserves file table indices exactly as given.])
4788 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4789 gcc_cv_as_gdwarf2_flag,
4790 [elf,2,11,0], [--gdwarf2], [$insn],,
4791 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4792 [Define if your assembler supports the --gdwarf2 option.])])
4794 gcc_GAS_CHECK_FEATURE([--gstabs option],
4795 gcc_cv_as_gstabs_flag,
4796 [elf,2,11,0], [--gstabs], [$insn],,
4797 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4798 [Define if your assembler supports the --gstabs option.])])
4800 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4801 gcc_cv_as_debug_prefix_map_flag,
4802 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4803 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4804 [Define if your assembler supports the --debug-prefix-map option.])])
4807 gcc_GAS_CHECK_FEATURE([compressed debug sections],
4808 gcc_cv_as_compress_debug,,,,
4809 [# gas compiled without zlib cannot compress debug sections and warns
4810 # about it, but still exits successfully. So check for this, too.
4811 if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null
4813 gcc_cv_as_compress_debug=0
4814 # Since binutils 2.26, gas supports --compress-debug-sections=type,
4815 # defaulting to the ELF gABI format.
4816 elif $gcc_cv_as --compress-debug-sections=zlib-gnu -o conftest.o conftest.s > /dev/null 2>&1
4818 gcc_cv_as_compress_debug=2
4819 gcc_cv_as_compress_debug_option="--compress-debug-sections"
4820 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
4821 # Before binutils 2.26, gas only supported --compress-debug-options and
4822 # emitted the traditional GNU format.
4823 elif $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s > /dev/null 2>&1
4825 gcc_cv_as_compress_debug=1
4826 gcc_cv_as_compress_debug_option="--compress-debug-sections"
4827 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
4829 gcc_cv_as_compress_debug=0
4831 AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug,
4832 [Define to the level of your assembler's compressed debug section support.])
4833 AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option",
4834 [Define to the assembler option to enable compressed debug sections.])
4835 AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option",
4836 [Define to the assembler option to disable compressed debug sections.])
4838 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4841 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4842 [Define if your assembler supports .lcomm with an alignment field.])])
4844 if test x$with_sysroot = x && test x$host = x$target \
4845 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4846 && test "$prefix" != "NONE"; then
4847 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4848 [Define to PREFIX/include if cpp should also search that directory.])
4851 # Determine the version of glibc, if any, used on the target.
4852 AC_MSG_CHECKING([for target glibc version])
4853 AC_ARG_WITH([glibc-version],
4854 [AS_HELP_STRING([--with-glibc-version=M.N],
4855 [assume GCC used with glibc version M.N or later])], [
4856 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
4857 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
4858 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
4860 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
4862 glibc_version_major=0
4863 glibc_version_minor=0
4864 [if test -f $target_header_dir/features.h \
4865 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
4866 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
4867 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
4868 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
4870 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
4871 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MAJOR], [$glibc_version_major],
4872 [GNU C Library major version number used on the target, or 0.])
4873 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MINOR], [$glibc_version_minor],
4874 [GNU C Library minor version number used on the target, or 0.])
4876 AC_ARG_ENABLE(gnu-unique-object,
4877 [AS_HELP_STRING([--enable-gnu-unique-object],
4878 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4879 [case $enable_gnu_unique_object in
4881 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4882 Valid choices are 'yes' and 'no'.]) ;;
4884 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4886 [.type foo, '$target_type_format_char'gnu_unique_object],,
4887 # We need to unquote above to to use the definition from config.gcc.
4888 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4889 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
4891 if test x$enable_gnu_unique_object = xyes; then
4892 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4893 [Define if your assembler supports @gnu_unique_object.])
4896 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4897 [gcc_cv_as_line_zero],
4898 [gcc_cv_as_line_zero=no
4899 if test $in_tree_gas = yes; then
4900 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4901 elif test "x$gcc_cv_as" != x; then
4902 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4903 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4904 test "x`cat conftest.out`" = x
4906 gcc_cv_as_line_zero=yes
4908 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4909 cat conftest.s >&AS_MESSAGE_LOG_FD
4910 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4911 cat conftest.out >&AS_MESSAGE_LOG_FD
4913 rm -f conftest.o conftest.s conftest.out
4915 if test "x$gcc_cv_as_line_zero" = xyes; then
4916 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4917 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4920 AC_MSG_CHECKING(support for thin archives)
4921 thin_archive_support=no
4922 echo 'int main (void) { return 0; }' > conftest.c
4923 if ($AR --version | sed 1q | grep "GNU ar" \
4924 && $CC $CFLAGS -c conftest.c \
4925 && $AR rcT conftest.a conftest.o \
4926 && $CC $CFLAGS $LDFLAGS -o conftest conftest.a) >/dev/null 2>&1; then
4927 thin_archive_support=yes
4929 rm -f conftest.c conftest.o conftest.a conftest
4930 AC_MSG_RESULT($thin_archive_support)
4931 AC_SUBST(thin_archive_support)
4933 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4934 gcc_cv_ld_eh_frame_hdr=no
4935 if test $in_tree_ld = yes ; then
4936 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4937 && test $in_tree_ld_is_elf = yes; then
4938 gcc_cv_ld_eh_frame_hdr=yes
4940 elif test x$gcc_cv_ld != x; then
4941 if echo "$ld_ver" | grep GNU > /dev/null; then
4942 # Check if linker supports --eh-frame-hdr option
4943 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4944 gcc_cv_ld_eh_frame_hdr=yes
4949 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4950 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4951 gcc_cv_ld_eh_frame_hdr=yes
4957 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4958 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4959 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4960 [Define if your linker supports .eh_frame_hdr.])
4962 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4964 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
4965 gcc_cv_ld_eh_frame_ciev3=no
4966 if test $in_tree_ld = yes ; then
4967 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4968 && test $in_tree_ld_is_elf = yes; then
4969 gcc_cv_ld_eh_frame_ciev3=yes
4971 elif test x$gcc_cv_ld != x; then
4972 if echo "$ld_ver" | grep GNU > /dev/null; then
4973 gcc_cv_ld_eh_frame_ciev3=yes
4974 if test 0"$ld_date" -lt 20040513; then
4975 if test -n "$ld_date"; then
4976 # If there was date string, but was earlier than 2004-05-13, fail
4977 gcc_cv_ld_eh_frame_ciev3=no
4978 elif test "$ld_vers_major" -lt 2; then
4979 gcc_cv_ld_eh_frame_ciev3=no
4980 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
4981 gcc_cv_ld_eh_frame_ciev3=no
4987 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
4988 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
4989 gcc_cv_ld_eh_frame_ciev3=yes
4995 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
4996 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
4997 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
4998 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
5000 AC_MSG_CHECKING(linker position independent executable support)
5002 if test $in_tree_ld = yes ; then
5004 # Full PIE support on Solaris was only introduced in gld 2.26.
5005 *-*-solaris2*) gcc_gld_pie_min_version=26 ;;
5006 *) gcc_gld_pie_min_version=15 ;;
5008 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge "$gcc_gld_pie_min_version" -o "$gcc_cv_gld_major_version" -gt 2 \
5009 && test $in_tree_ld_is_elf = yes; then
5012 elif test x$gcc_cv_ld != x; then
5013 # Check if linker supports -pie option
5014 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
5018 if echo "$ld_ver" | grep GNU > /dev/null \
5019 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
5026 *-*-solaris2.1[[1-9]]*)
5027 # Solaris 11.x and Solaris 12 added PIE support.
5028 if $gcc_cv_ld -z help 2>&1 | grep -- type.*pie > /dev/null; then
5035 if test x"$gcc_cv_ld_pie" = xyes; then
5036 AC_DEFINE(HAVE_LD_PIE, 1,
5037 [Define if your linker supports PIE option.])
5039 AC_MSG_RESULT($gcc_cv_ld_pie)
5041 AC_MSG_CHECKING(linker PIE support with copy reloc)
5042 gcc_cv_ld_pie_copyreloc=no
5043 if test $gcc_cv_ld_pie = yes ; then
5044 if test $in_tree_ld = yes ; then
5045 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
5046 gcc_cv_ld_pie_copyreloc=yes
5048 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5049 # Check if linker supports -pie option with copy reloc
5051 i?86-*-linux* | x86_64-*-linux*)
5052 cat > conftest1.s <<EOF
5055 .type a_glob, @object
5060 cat > conftest2.s <<EOF
5063 .type main, @function
5065 movl %eax, a_glob(%rip)
5068 .section .data.rel,"aw",@progbits
5073 if $gcc_cv_as --64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5074 && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \
5075 && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5076 && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then
5077 gcc_cv_ld_pie_copyreloc=yes
5079 rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s
5084 AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC,
5085 [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`],
5086 [Define 0/1 if your linker supports -pie option with copy reloc.])
5087 AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc)
5089 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
5090 gcc_cv_ld_eh_gc_sections=no
5091 if test $in_tree_ld = yes ; then
5092 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
5093 && test $in_tree_ld_is_elf = yes; then
5094 gcc_cv_ld_eh_gc_sections=yes
5096 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
5097 cat > conftest.s <<EOF
5100 .type _start, @function
5103 .size _start, .-_start
5104 .section .text.foo,"ax",@progbits
5105 .type foo, @function
5109 .section .gcc_except_table.foo,"a",@progbits
5112 .section .eh_frame,"a",@progbits
5115 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5116 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5117 | grep "gc-sections option ignored" > /dev/null; then
5118 gcc_cv_ld_eh_gc_sections=no
5119 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5120 | grep gcc_except_table > /dev/null; then
5121 gcc_cv_ld_eh_gc_sections=yes
5122 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
5123 if test x$gcc_cv_as_comdat_group != xyes; then
5124 gcc_cv_ld_eh_gc_sections=no
5125 cat > conftest.s <<EOF
5128 .type _start, @function
5131 .size _start, .-_start
5132 .section .gnu.linkonce.t.foo,"ax",@progbits
5133 .type foo, @function
5137 .section .gcc_except_table.foo,"a",@progbits
5140 .section .eh_frame,"a",@progbits
5143 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5144 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5145 | grep "gc-sections option ignored" > /dev/null; then
5146 gcc_cv_ld_eh_gc_sections=no
5147 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5148 | grep gcc_except_table > /dev/null; then
5149 gcc_cv_ld_eh_gc_sections=yes
5155 rm -f conftest.s conftest.o conftest
5159 # ??? This apparently exposes a binutils bug with PC-relative relocations.
5160 gcc_cv_ld_eh_gc_sections=no
5163 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
5164 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
5165 [Define if your linker supports garbage collection of
5166 sections in presence of EH frames.])
5168 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
5170 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
5171 gcc_cv_ld_eh_gc_sections_bug=no
5172 if test $in_tree_ld = yes ; then
5173 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
5174 && test $in_tree_ld_is_elf = yes; then
5175 gcc_cv_ld_eh_gc_sections_bug=yes
5177 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x -a x$gcc_cv_as_comdat_group = xyes; then
5178 gcc_cv_ld_eh_gc_sections_bug=yes
5179 cat > conftest.s <<EOF
5182 .type _start, @function
5185 .size _start, .-_start
5186 .section .text.startup.foo,"ax",@progbits
5187 .type foo, @function
5191 .section .gcc_except_table.foo,"a",@progbits
5194 .section .eh_frame,"a",@progbits
5197 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5198 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5199 | grep "gc-sections option ignored" > /dev/null; then
5201 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5202 | grep gcc_except_table > /dev/null; then
5203 gcc_cv_ld_eh_gc_sections_bug=no
5206 rm -f conftest.s conftest.o conftest
5208 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
5209 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
5210 [Define if your linker has buggy garbage collection of
5211 sections support when .text.startup.foo like sections are used.])
5213 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
5215 AC_MSG_CHECKING(linker for compressed debug sections)
5216 # gold/gld support compressed debug sections since binutils 2.19/2.21
5217 # In binutils 2.26, gld gained support for the ELF gABI format.
5218 if test $in_tree_ld = yes ; then
5219 gcc_cv_ld_compress_debug=0
5220 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 19 -o "$gcc_cv_gld_major_version" -gt 2 \
5221 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = yes; then
5222 gcc_cv_ld_compress_debug=2
5223 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5224 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 26 -o "$gcc_cv_gld_major_version" -gt 2 \
5225 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = no; then
5226 gcc_cv_ld_compress_debug=3
5227 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5228 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2 \
5229 && test $in_tree_ld_is_elf = yes; then
5230 gcc_cv_ld_compress_debug=1
5232 elif echo "$ld_ver" | grep GNU > /dev/null; then
5233 if test "$ld_vers_major" -lt 2 \
5234 || test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 21; then
5235 gcc_cv_ld_compress_debug=0
5236 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
5237 gcc_cv_ld_compress_debug=1
5239 gcc_cv_ld_compress_debug=3
5240 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5242 if test $ld_is_gold = yes; then
5243 gcc_cv_ld_compress_debug=2
5244 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5250 # Introduced in Solaris 11.2.
5251 if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then
5252 gcc_cv_ld_compress_debug=3
5253 gcc_cv_ld_compress_debug_option="-z compress-sections"
5255 gcc_cv_ld_compress_debug=0
5259 # Assume linkers other than GNU ld don't support compessed debug
5261 gcc_cv_ld_compress_debug=0
5266 AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug,
5267 [Define to the level of your linker's compressed debug section support.])
5268 AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option",
5269 [Define to the linker option to enable compressed debug sections.])
5270 AC_MSG_RESULT($gcc_cv_ld_compress_debug)
5272 if test x"$ld64_flag" = x"yes"; then
5274 # Set defaults for possibly untestable items.
5275 gcc_cv_ld64_export_dynamic=0
5277 if test "$build" = "$host"; then
5283 # On Darwin, because of FAT library support, it is often possible to execute
5284 # exes from compatible archs even when the host differs from the build system.
5285 case "$build","$host" in
5286 x86_64-*-darwin*,i?86-*-darwin* | powerpc64*-*-darwin*,powerpc*-*-darwin*)
5291 # If the configurer specified a minimum ld64 version to be supported, then use
5292 # that to determine feature support.
5293 if test x"${gcc_cv_ld64_version}" != x; then
5294 AC_MSG_CHECKING(ld64 specified version)
5295 gcc_cv_ld64_major=`echo "$gcc_cv_ld64_version" | sed -e 's/\..*//'`
5296 AC_MSG_RESULT($gcc_cv_ld64_major)
5297 if test "$gcc_cv_ld64_major" -ge 236; then
5298 gcc_cv_ld64_export_dynamic=1
5300 elif test -x "$gcc_cv_ld" -a "$darwin_try_test" -eq 1; then
5301 # If the version was not specified, try to find it.
5302 AC_MSG_CHECKING(linker version)
5303 if test x"${gcc_cv_ld64_version}" = x; then
5304 gcc_cv_ld64_version=`$gcc_cv_ld -v 2>&1 | grep ld64 | sed s/.*ld64-// | awk '{print $1}'`
5306 AC_MSG_RESULT($gcc_cv_ld64_version)
5308 AC_MSG_CHECKING(linker for -export_dynamic support)
5309 gcc_cv_ld64_export_dynamic=1
5310 if $gcc_cv_ld -export_dynamic < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then
5311 gcc_cv_ld64_export_dynamic=0
5313 AC_MSG_RESULT($gcc_cv_ld64_export_dynamic)
5316 if test x"${gcc_cv_ld64_version}" != x; then
5317 AC_DEFINE_UNQUOTED(LD64_VERSION, "${gcc_cv_ld64_version}",
5318 [Define to ld64 version.])
5321 AC_DEFINE_UNQUOTED(LD64_HAS_EXPORT_DYNAMIC, $gcc_cv_ld64_export_dynamic,
5322 [Define to 1 if ld64 supports '-export_dynamic'.])
5329 AC_CACHE_CHECK(linker --as-needed support,
5330 gcc_cv_ld_as_needed,
5331 [gcc_cv_ld_as_needed=no
5332 gcc_cv_ld_as_needed_option='--as-needed'
5333 gcc_cv_ld_no_as_needed_option='--no-as-needed'
5334 if test $in_tree_ld = yes ; then
5335 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5336 && test $in_tree_ld_is_elf = yes; then
5337 gcc_cv_ld_as_needed=yes
5339 elif test x$gcc_cv_ld != x; then
5340 # Check if linker supports --as-needed and --no-as-needed options
5341 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
5342 gcc_cv_ld_as_needed=yes
5345 # Solaris 2 ld always supports -z ignore/-z record.
5347 gcc_cv_ld_as_needed=yes
5348 gcc_cv_ld_as_needed_option="-z ignore"
5349 gcc_cv_ld_no_as_needed_option="-z record"
5354 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
5355 # dl_iterate_phdr, i.e. since Solaris 11.
5357 *-*-solaris2.1[[1-9]]*)
5359 i?86-*-* | x86_64-*-*)
5360 if echo "$ld_ver" | grep GNU > /dev/null; then
5361 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
5362 gcc_cv_ld_as_needed=no
5368 gcc_cv_ld_as_needed=no
5372 if test x"$gcc_cv_ld_as_needed" = xyes; then
5373 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
5374 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
5375 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
5376 [Define to the linker option to ignore unused dependencies.])
5377 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
5378 [Define to the linker option to keep unused dependencies.])
5381 AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities)
5382 saved_LDFLAGS="$LDFLAGS"
5383 for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do
5384 LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map"
5385 AC_LINK_IFELSE([int main(void) {return 0;}],
5386 [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no])
5388 LDFLAGS="$saved_LDFLAGS"
5389 if test "x$gcc_cv_ld_clearcap" = xyes; then
5390 AC_DEFINE([HAVE_LD_CLEARCAP], 1,
5391 [Define if the linker supports clearing hardware capabilities via mapfile.])
5392 AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map])
5394 AC_MSG_RESULT($gcc_cv_ld_clearcap)
5400 emul_name="-melf32lppc"
5403 emul_name="-melf32ppc"
5406 AC_CACHE_CHECK(linker .gnu.attributes long double support,
5408 [gcc_cv_ld_ppc_attr=no
5409 if test x"$ld_is_gold" = xyes; then
5410 gcc_cv_ld_ppc_attr=yes
5411 elif test $in_tree_ld = yes ; then
5412 if test "$gcc_cv_gld_major_version" -eq 2 \
5413 -a "$gcc_cv_gld_minor_version" -ge 28 \
5414 -o "$gcc_cv_gld_major_version" -gt 2; then
5415 gcc_cv_ld_ppc_attr=yes
5417 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5418 # check that merging the long double .gnu_attribute doesn't warn
5419 cat > conftest1.s <<EOF
5422 cat > conftest2.s <<EOF
5425 if $gcc_cv_as -a32 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5426 && $gcc_cv_as -a32 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5427 && $gcc_cv_ld $emul_name -r -o conftest.o conftest1.o conftest2.o > /dev/null 2> conftest.err \
5428 && test ! -s conftest.err; then
5429 gcc_cv_ld_ppc_attr=yes
5431 rm -f conftest.err conftest.o conftest1.o conftest2.o conftest1.s conftest2.s
5434 if test x$gcc_cv_ld_ppc_attr = xyes; then
5435 AC_DEFINE(HAVE_LD_PPC_GNU_ATTR_LONG_DOUBLE, 1,
5436 [Define if your PowerPC linker has .gnu.attributes long double support.])
5441 case "$target:$tm_file" in
5442 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
5445 emul_name="-melf64lppc"
5448 emul_name="-melf64ppc"
5451 emul_name="-melf64ppc_fbsd"
5454 AC_CACHE_CHECK(linker support for omitting dot symbols,
5455 gcc_cv_ld_no_dot_syms,
5456 [gcc_cv_ld_no_dot_syms=no
5457 if test x"$ld_is_gold" = xyes; then
5458 gcc_cv_ld_no_dot_syms=yes
5459 elif test $in_tree_ld = yes ; then
5460 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
5461 gcc_cv_ld_no_dot_syms=yes
5463 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5464 cat > conftest1.s <<EOF
5468 cat > conftest2.s <<EOF
5469 .section ".opd","aw"
5474 .quad .LEfoo,.TOC.@tocbase,0
5480 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5481 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5482 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
5483 gcc_cv_ld_no_dot_syms=yes
5485 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
5488 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
5489 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
5490 [Define if your PowerPC64 linker only needs function descriptor syms.])
5493 AC_CACHE_CHECK(linker large toc support,
5494 gcc_cv_ld_large_toc,
5495 [gcc_cv_ld_large_toc=no
5496 if test x"$ld_is_gold" = xyes; then
5497 gcc_cv_ld_large_toc=yes
5498 elif test $in_tree_ld = yes ; then
5499 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
5500 gcc_cv_ld_large_toc=yes
5502 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5503 cat > conftest.s <<EOF
5504 .section ".tbss","awT",@nobits
5510 addis 9,13,ie0@got@tprel@ha
5511 ld 9,ie0@got@tprel@l(9)
5513 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5514 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
5515 gcc_cv_ld_large_toc=yes
5517 rm -f conftest conftest.o conftest.s
5520 if test x"$gcc_cv_ld_large_toc" = xyes; then
5521 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5522 [Define if your PowerPC64 linker supports a large TOC.])
5525 AC_CACHE_CHECK(linker toc pointer alignment,
5526 gcc_cv_ld_toc_align,
5527 [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then
5528 cat > conftest.s <<EOF
5533 .section .data.rel.ro,"aw",@progbits
5538 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5539 && $gcc_cv_ld $emul_name -z norelro -o conftest conftest.o > /dev/null 2>&1; then
5540 gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'`
5542 rm -f conftest conftest.o conftest.s
5545 if test -n "$gcc_cv_ld_toc_align" && test $gcc_cv_ld_toc_align -gt 8; then
5546 AC_DEFINE_UNQUOTED(POWERPC64_TOC_POINTER_ALIGNMENT, $gcc_cv_ld_toc_align,
5547 [Define to .TOC. alignment forced by your linker.])
5554 AC_CACHE_CHECK(linker large toc support,
5555 gcc_cv_ld_large_toc,
5556 [gcc_cv_ld_large_toc=no
5557 if test x$gcc_cv_as != x ; then
5558 cat > conftest.s <<EOF
5568 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
5569 gcc_cv_ld_large_toc=yes
5571 rm -f conftest conftest.o conftest.s
5574 if test x"$gcc_cv_ld_large_toc" = xyes; then
5575 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5576 [Define if your PowerPC64 linker supports a large TOC.])
5581 AC_CACHE_CHECK(linker --build-id support,
5583 [gcc_cv_ld_buildid=no
5584 if test $in_tree_ld = yes ; then
5585 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5586 "$gcc_cv_gld_minor_version" -ge 18 -o \
5587 "$gcc_cv_gld_major_version" -gt 2 \
5588 && test $in_tree_ld_is_elf = yes; then
5589 gcc_cv_ld_buildid=yes
5591 elif test x$gcc_cv_ld != x; then
5592 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
5593 gcc_cv_ld_buildid=yes
5596 if test x"$gcc_cv_ld_buildid" = xyes; then
5597 AC_DEFINE(HAVE_LD_BUILDID, 1,
5598 [Define if your linker supports --build-id.])
5601 AC_ARG_ENABLE(linker-build-id,
5602 [AS_HELP_STRING([--enable-linker-build-id],
5603 [compiler will always pass --build-id to linker])],
5605 enable_linker_build_id=no)
5607 if test x"$enable_linker_build_id" = xyes; then
5608 if test x"$gcc_cv_ld_buildid" = xyes; then
5609 AC_DEFINE(ENABLE_LD_BUILDID, 1,
5610 [Define if gcc should always pass --build-id to linker.])
5612 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
5616 # In binutils 2.21, GNU ld gained support for new emulations fully
5617 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
5618 AC_CACHE_CHECK(linker *_sol2 emulation support,
5619 gcc_cv_ld_sol2_emulation,
5620 [gcc_cv_ld_sol2_emulation=no
5621 if test $in_tree_ld = yes ; then
5622 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5623 "$gcc_cv_gld_minor_version" -ge 21 -o \
5624 "$gcc_cv_gld_major_version" -gt 2 \
5625 && test $in_tree_ld_is_elf = yes; then
5626 gcc_cv_ld_sol2_emulation=yes
5628 elif test x$gcc_cv_ld != x; then
5629 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
5630 grep _sol2 > /dev/null; then
5631 gcc_cv_ld_sol2_emulation=yes
5634 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
5635 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
5636 [Define if your linker supports the *_sol2 emulations.])
5639 AC_CACHE_CHECK(linker --sysroot support,
5641 [gcc_cv_ld_sysroot=no
5642 if test $in_tree_ld = yes ; then
5643 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
5644 gcc_cv_ld_sysroot=yes
5646 elif test x$gcc_cv_ld != x; then
5647 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
5648 gcc_cv_ld_sysroot=yes
5651 if test x"$gcc_cv_ld_sysroot" = xyes; then
5652 AC_DEFINE(HAVE_LD_SYSROOT, 1,
5653 [Define if your linker supports --sysroot.])
5658 # Check for system-provided CRTs on Solaris 11.x and Solaris 12.
5659 AC_CACHE_CHECK([system-provided CRTs on Solaris],
5660 gcc_cv_solaris_crts,
5661 [gcc_cv_solaris_crts=no
5662 if test x$host != x$target; then
5663 if test "x$with_sysroot" = xyes; then
5664 target_sysroot="${test_exec_prefix}/${target_noncanonical}/sys-root"
5666 target_sysroot="${with_sysroot}"
5669 target_libdir="$target_sysroot/usr/lib"
5670 # At the time they were added, gcrt1.o became a symlink for backwards
5671 # compatibility on x86, while crt1.o was added on sparc, so check for that.
5673 i?86-*-solaris2* | x86_64-*-solaris2*)
5674 if test -h "$target_libdir/gcrt1.o"; then gcc_cv_solaris_crts=yes; fi
5677 if test -f "$target_libdir/crt1.o"; then gcc_cv_solaris_crts=yes; fi
5682 if test x$gcc_cv_solaris_crts = xyes; then
5683 AC_DEFINE(HAVE_SOLARIS_CRTS, 1,
5684 [Define if the system-provided CRTs are present on Solaris.])
5687 # Test for stack protector support in target C library.
5688 AC_CACHE_CHECK(__stack_chk_fail in target C library,
5689 gcc_cv_libc_provides_ssp,
5690 [gcc_cv_libc_provides_ssp=no
5693 # All versions of musl provide stack protector
5694 gcc_cv_libc_provides_ssp=yes;;
5695 *-*-linux* | *-*-kfreebsd*-gnu)
5696 # glibc 2.4 and later provides __stack_chk_fail and
5697 # either __stack_chk_guard, or TLS access to stack guard canary.
5698 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
5699 [if test -f $target_header_dir/features.h \
5700 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
5701 $target_header_dir/features.h > /dev/null; then
5702 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
5703 $target_header_dir/features.h > /dev/null && \
5704 test -f $target_header_dir/bits/uClibc_config.h && \
5705 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
5706 $target_header_dir/bits/uClibc_config.h > /dev/null; then
5707 gcc_cv_libc_provides_ssp=yes
5709 # all versions of Bionic support stack protector
5710 elif test -f $target_header_dir/sys/cdefs.h \
5711 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
5712 $target_header_dir/sys/cdefs.h > /dev/null; then
5713 gcc_cv_libc_provides_ssp=yes
5717 # Avoid complicated tests (see
5718 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
5719 # simply assert that glibc does provide this, which is true for all
5720 # realistically usable GNU/Hurd configurations.
5721 # All supported versions of musl provide it as well
5722 gcc_cv_libc_provides_ssp=yes;;
5723 *-*-darwin* | *-*-freebsd* | *-*-netbsd*)
5724 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
5725 [echo "no __stack_chk_fail on this target"])
5727 *) gcc_cv_libc_provides_ssp=no ;;
5730 if test x$gcc_cv_libc_provides_ssp = xyes; then
5731 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
5732 [Define if your target C library provides stack protector support])
5735 # Check whether --enable-default-ssp was given.
5736 AC_ARG_ENABLE(default-ssp,
5737 [AS_HELP_STRING([--enable-default-ssp],
5738 [enable Stack Smashing Protection as default])],[
5739 if test x$gcc_cv_libc_provides_ssp = xyes; then
5741 ia64*-*-*) enable_default_ssp=no ;;
5742 *) enable_default_ssp=$enableval ;;
5745 enable_default_ssp=no
5747 enable_default_ssp=no)
5748 if test x$enable_default_ssp = xyes ; then
5749 AC_DEFINE(ENABLE_DEFAULT_SSP, 1,
5750 [Define if your target supports default stack protector and it is enabled.])
5752 AC_SUBST([enable_default_ssp])
5754 # Test for <sys/sdt.h> on the target.
5755 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
5756 AC_MSG_CHECKING(sys/sdt.h in the target C library)
5758 if test -f $target_header_dir/sys/sdt.h; then
5760 AC_DEFINE(HAVE_SYS_SDT_H, 1,
5761 [Define if your target C library provides sys/sdt.h])
5763 AC_MSG_RESULT($have_sys_sdt_h)
5765 # Check if TFmode long double should be used by default or not.
5766 # Some glibc targets used DFmode long double, but with glibc 2.4
5767 # and later they can use TFmode.
5769 powerpc*-*-linux* | \
5773 AC_ARG_WITH(long-double-128,
5774 [AS_HELP_STRING([--with-long-double-128],
5775 [use 128-bit long double by default])],
5776 gcc_cv_target_ldbl128="$with_long_double_128",
5777 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
5778 [gcc_cv_target_ldbl128=no
5779 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
5780 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
5781 && gcc_cv_target_ldbl128=yes
5785 if test x$gcc_cv_target_ldbl128 = xyes; then
5786 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
5787 [Define if TFmode long double should be the default])
5790 # Check if the target LIBC supports exporting the AT_PLATFORM and AT_HWCAP
5791 # values in the TCB. Currently, only GLIBC 2.23 and later support this.
5792 gcc_cv_libc_provides_hwcap_in_tcb=no
5795 GCC_GLIBC_VERSION_GTE_IFELSE([2], [23], [gcc_cv_libc_provides_hwcap_in_tcb=yes], )
5798 if test x$gcc_cv_libc_provides_hwcap_in_tcb = xyes; then
5799 AC_DEFINE(TARGET_LIBC_PROVIDES_HWCAP_IN_TCB, 1,
5800 [Define if your target C Library provides the AT_HWCAP value in the TCB])
5803 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
5804 gcc_cv_target_dl_iterate_phdr=unknown
5806 # Restrict to Solaris 11+. While most of the Solaris 11 linker changes
5807 # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in
5808 # libdl there, both complicating its use and breaking compatibility
5809 # between Solaris 10 updates.
5810 *-*-solaris2.1[[1-9]]*)
5811 # <link.h> needs both a dl_iterate_phdr declaration and support for
5812 # compilation with largefile support.
5813 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
5814 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
5815 gcc_cv_target_dl_iterate_phdr=yes
5817 gcc_cv_target_dl_iterate_phdr=no
5820 *-*-dragonfly* | *-*-freebsd*)
5821 if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then
5822 gcc_cv_target_dl_iterate_phdr=yes
5824 gcc_cv_target_dl_iterate_phdr=no
5828 gcc_cv_target_dl_iterate_phdr=yes
5831 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
5832 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
5833 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
5834 [Define if your target C library provides the `dl_iterate_phdr' function.])
5836 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
5838 # We no longer support different GC mechanisms. Emit an error if
5839 # the user configures with --with-gc.
5841 [AS_HELP_STRING([--with-gc={page,zone}],
5842 [this option is not supported anymore. It used to choose
5843 the garbage collection mechanism to use with the compiler])],
5844 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
5847 # Libraries to use on the host. This will normally be set by the top
5848 # level Makefile. Here we simply capture the value for our Makefile.
5849 if test -z "${HOST_LIBS+set}"; then
5854 # Use the system's zlib library.
5857 dnl Very limited version of automake's enable-maintainer-mode
5859 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
5860 dnl maintainer-mode is disabled by default
5861 AC_ARG_ENABLE(maintainer-mode,
5862 [AS_HELP_STRING([--enable-maintainer-mode],
5863 [enable make rules and dependencies not useful
5864 (and sometimes confusing) to the casual installer])],
5865 maintainer_mode=$enableval,
5868 AC_MSG_RESULT($maintainer_mode)
5870 if test "$maintainer_mode" = "yes"; then
5877 dnl Whether to prevent multiple front-ends from linking at the same time
5879 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
5880 AC_ARG_ENABLE(link-mutex,
5881 [AS_HELP_STRING([--enable-link-mutex],
5882 [avoid linking multiple front-ends at once to avoid thrashing
5883 on the build machine])],
5884 do_link_mutex=$enableval,
5886 AC_MSG_RESULT($do_link_mutex)
5888 if test "$do_link_mutex" = "yes"; then
5893 AC_SUBST(DO_LINK_MUTEX)
5899 # Make empty files to contain the specs and options for each language.
5900 # Then add #include lines to for a compiler that has specs and/or options.
5906 # These (without "all_") are set in each config-lang.in.
5907 # `language' must be a single word so is spelled singularly.
5910 all_outputs='Makefile'
5911 # List of language makefile fragments.
5913 # Additional files for gengtype
5914 all_gtfiles="$target_gtfiles"
5916 # These are the languages that are set in --enable-languages,
5917 # and are available in the GCC tree.
5918 all_selected_languages=
5920 # Add the language fragments.
5921 # Languages are added via two mechanisms. Some information must be
5922 # recorded in makefile variables, these are defined in config-lang.in.
5923 # We accumulate them and plug them into the main Makefile.
5924 # The other mechanism is a set of hooks for each of the main targets
5925 # like `clean', `install', etc.
5927 language_hooks="Make-hooks"
5929 for lang in ${srcdir}/*/config-lang.in
5932 test "$lang" = "${srcdir}/*/config-lang.in" && continue
5934 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
5935 if test "x$lang_alias" = x
5937 echo "$lang doesn't set \$language." 1>&2
5940 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
5941 subdirs="$subdirs $subdir"
5943 # $gcc_subdir is where the gcc integration files are to be found
5944 # for a language, both for internal compiler purposes (compiler
5945 # sources implementing front-end to GCC tree converters), and for
5946 # build infrastructure purposes (Make-lang.in, etc.)
5948 # This will be <subdir> (relative to $srcdir) if a line like
5949 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
5950 # is found in <langdir>/config-lang.in, and will remain <langdir>
5953 # Except for the language alias (fetched above), the regular
5954 # "config-lang.in" contents are always retrieved from $gcc_subdir,
5955 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
5956 # only this and the language alias.
5958 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
5959 if [ "$gcc_subdir" = "" ]; then
5960 gcc_subdir="$subdir"
5963 case ",$enable_languages," in
5965 all_selected_languages="$all_selected_languages $lang_alias"
5966 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
5967 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
5979 . ${srcdir}/$gcc_subdir/config-lang.in
5980 if test "x$language" = x
5982 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
5987 case ",$enable_languages," in
5990 for i in $subdir_requires; do
5991 test -f "${srcdir}/$i/config-lang.in" && continue
5999 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
6000 if test -f $srcdir/$gcc_subdir/lang.opt; then
6001 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
6002 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
6004 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
6005 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
6007 all_languages="$all_languages $language"
6008 all_compilers="$all_compilers $compilers"
6009 all_outputs="$all_outputs $outputs"
6010 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
6011 case ",$enable_languages," in
6013 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
6015 AC_SUBST(enable_lto)
6022 for language in $all_selected_languages
6024 check_languages="$check_languages check-$language"
6027 # We link each language in with a set of hooks, reached indirectly via
6028 # lang.${target}. Only do so for selected languages.
6032 target_list="all.cross start.encap rest.encap tags \
6033 install-common install-man install-info install-pdf install-html dvi \
6034 pdf html uninstall info man srcextra srcman srcinfo \
6035 mostlyclean clean distclean maintainer-clean install-plugin"
6037 for t in $target_list
6040 for lang in $all_selected_languages
6044 echo "lang.$t: $x" >> Make-hooks
6048 # Option include files
6051 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
6052 option_includes="option-includes.mk"
6053 AC_SUBST_FILE(option_includes)
6061 echo "dir ." > .gdbinit
6062 echo "dir ${srcdir}" >> .gdbinit
6063 if test x$gdb_needs_out_file_path = xyes
6065 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
6067 if test "x$subdirs" != x; then
6070 echo "dir ${srcdir}/$s" >> .gdbinit
6073 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
6074 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
6076 # Put a breakpoint on __asan_report_error to help with debugging buffer
6079 *-fsanitize=address*)
6080 echo "source ${srcdir}/gdbasan.in" >> .gdbinit
6084 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
6085 AC_SUBST(gcc_tooldir)
6088 # Find a directory in which to install a shared libgcc.
6090 AC_ARG_ENABLE(version-specific-runtime-libs,
6091 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
6092 [specify that runtime libraries should be
6093 installed in a compiler-specific directory])])
6095 # Substitute configuration variables
6098 AC_SUBST(all_compilers)
6099 AC_SUBST(all_gtfiles)
6100 AC_SUBST(all_lang_makefrags)
6101 AC_SUBST(all_languages)
6102 AC_SUBST(all_selected_languages)
6103 AC_SUBST(build_exeext)
6104 AC_SUBST(build_install_headers_dir)
6105 AC_SUBST(build_xm_file_list)
6106 AC_SUBST(build_xm_include_list)
6107 AC_SUBST(build_xm_defines)
6108 AC_SUBST(build_file_translate)
6109 AC_SUBST(check_languages)
6110 AC_SUBST(cpp_install_dir)
6111 AC_SUBST(xmake_file)
6112 AC_SUBST(tmake_file)
6113 AC_SUBST(TM_ENDIAN_CONFIG)
6114 AC_SUBST(TM_MULTILIB_CONFIG)
6115 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
6116 AC_SUBST(extra_gcc_objs)
6117 AC_SUBST(user_headers_inc_next_pre)
6118 AC_SUBST(user_headers_inc_next_post)
6119 AC_SUBST(extra_headers_list)
6120 AC_SUBST(extra_objs)
6121 AC_SUBST(extra_programs)
6122 AC_SUBST(float_h_file)
6123 AC_SUBST(gcc_config_arguments)
6124 AC_SUBST(gcc_gxx_include_dir)
6125 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
6126 AC_SUBST(host_exeext)
6127 AC_SUBST(host_xm_file_list)
6128 AC_SUBST(host_xm_include_list)
6129 AC_SUBST(host_xm_defines)
6130 AC_SUBST(out_host_hook_obj)
6132 AC_SUBST(lang_opt_files)
6133 AC_SUBST(lang_specs_files)
6134 AC_SUBST(lang_tree_files)
6135 AC_SUBST(local_prefix)
6137 AC_SUBST(objc_boehm_gc)
6139 AC_SUBST(out_object_file)
6140 AC_SUBST(common_out_file)
6141 AC_SUBST(common_out_object_file)
6142 AC_SUBST(tm_file_list)
6143 AC_SUBST(tm_include_list)
6144 AC_SUBST(tm_defines)
6145 AC_SUBST(tm_p_file_list)
6146 AC_SUBST(tm_p_include_list)
6147 AC_SUBST(xm_file_list)
6148 AC_SUBST(xm_include_list)
6149 AC_SUBST(xm_defines)
6150 AC_SUBST(use_gcc_stdint)
6151 AC_SUBST(c_target_objs)
6152 AC_SUBST(cxx_target_objs)
6153 AC_SUBST(fortran_target_objs)
6154 AC_SUBST(target_cpu_default)
6156 AC_SUBST_FILE(language_hooks)
6159 if test x${build} = x${host} ; then
6160 if test x${host} = x${target} ; then
6161 echo "Links are now set up to build a native compiler for ${target}." 1>&2
6163 echo "Links are now set up to build a cross-compiler" 1>&2
6164 echo " from ${host} to ${target}." 1>&2
6167 if test x${host} = x${target} ; then
6168 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
6169 echo " for ${target}." 1>&2
6171 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
6172 echo " from ${host} to ${target}." 1>&2
6176 AC_ARG_VAR(GMPLIBS,[How to link GMP])
6177 AC_ARG_VAR(GMPINC,[How to find GMP include files])
6179 AC_ARG_VAR(ISLLIBS,[How to link isl])
6180 AC_ARG_VAR(ISLINC,[How to find isl include files])
6181 if test "x${ISLLIBS}" != "x" ; then
6182 AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.])
6185 # Check whether isl_options_set_schedule_serialize_sccs is available;
6186 # it's new in isl 0.15.
6187 if test "x${ISLLIBS}" != "x" ; then
6188 saved_CXXFLAGS="$CXXFLAGS"
6189 CXXFLAGS="$CXXFLAGS $ISLINC $GMPINC"
6191 LIBS="$LIBS $ISLLIBS $GMPLIBS"
6193 AC_MSG_CHECKING([Checking for isl_options_set_schedule_serialize_sccs])
6194 AC_TRY_LINK([#include <isl/schedule.h>],
6195 [isl_options_set_schedule_serialize_sccs (NULL, 0);],
6196 [ac_has_isl_options_set_schedule_serialize_sccs=yes],
6197 [ac_has_isl_options_set_schedule_serialize_sccs=no])
6198 AC_MSG_RESULT($ac_has_isl_options_set_schedule_serialize_sccs)
6201 CXXFLAGS="$saved_CXXFLAGS"
6203 if test x"$ac_has_isl_options_set_schedule_serialize_sccs" = x"yes"; then
6204 AC_DEFINE(HAVE_ISL_OPTIONS_SET_SCHEDULE_SERIALIZE_SCCS, 1,
6205 [Define if isl_options_set_schedule_serialize_sccs exists.])
6210 AC_SUBST(pluginlibs)
6211 AC_SUBST(enable_plugin)
6212 if test x"$enable_plugin" = x"yes"; then
6213 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
6217 # Enable --enable-host-shared
6218 AC_ARG_ENABLE(host-shared,
6219 [AS_HELP_STRING([--enable-host-shared],
6220 [build host code as shared libraries])],
6221 [PICFLAG=-fPIC], [PICFLAG=])
6222 AC_SUBST(enable_host_shared)
6226 AC_ARG_ENABLE(libquadmath-support,
6227 [AS_HELP_STRING([--disable-libquadmath-support],
6228 [disable libquadmath support for Fortran])],
6229 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
6230 ENABLE_LIBQUADMATH_SUPPORT=yes)
6231 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
6232 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
6233 [Define to 1 to enable libquadmath support])
6237 # Specify what hash style to use by default.
6238 AC_ARG_WITH([linker-hash-style],
6239 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
6240 [specify the linker hash style])],
6241 [case x"$withval" in
6243 LINKER_HASH_STYLE=sysv
6246 LINKER_HASH_STYLE=gnu
6249 LINKER_HASH_STYLE=both
6252 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
6255 [LINKER_HASH_STYLE=''])
6256 if test x"${LINKER_HASH_STYLE}" != x; then
6257 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
6258 [The linker hash style])
6261 # Specify what should be the default of -fdiagnostics-color option.
6262 AC_ARG_WITH([diagnostics-color],
6263 [AC_HELP_STRING([--with-diagnostics-color={never,auto,auto-if-env,always}],
6264 [specify the default of -fdiagnostics-color option
6265 auto-if-env stands for -fdiagnostics-color=auto if
6266 GCC_COLOR environment variable is present and
6267 -fdiagnostics-color=never otherwise])],
6268 [case x"$withval" in
6270 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_NO
6273 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO
6276 DIAGNOSTICS_COLOR_DEFAULT=-1
6279 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_YES
6282 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-color])
6285 [DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO])
6286 AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT,
6287 [The default for -fdiagnostics-color option])
6289 # Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit
6290 # of jit/jit-playback.c.
6291 cat > gcc-driver-name.h <<EOF
6292 #define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_BASEVER}${exeext}"
6295 # Check whether --enable-default-pie was given.
6296 AC_ARG_ENABLE(default-pie,
6297 [AS_HELP_STRING([--enable-default-pie],
6298 [enable Position Independent Executable as default])],
6299 enable_default_pie=$enableval,
6300 enable_default_pie=no)
6301 if test x$enable_default_pie = xyes ; then
6302 AC_DEFINE(ENABLE_DEFAULT_PIE, 1,
6303 [Define if your target supports default PIE and it is enabled.])
6305 AC_SUBST([enable_default_pie])
6307 # Check if -fno-PIE works.
6308 AC_CACHE_CHECK([for -fno-PIE option],
6310 [saved_CXXFLAGS="$CXXFLAGS"
6311 CXXFLAGS="$CXXFLAGS -fno-PIE"
6312 AC_COMPILE_IFELSE([int main(void) {return 0;}],
6313 [gcc_cv_c_no_fpie=yes],
6314 [gcc_cv_c_no_fpie=no])
6315 CXXFLAGS="$saved_CXXFLAGS"])
6316 if test "$gcc_cv_c_no_fpie" = "yes"; then
6317 NO_PIE_CFLAGS="-fno-PIE"
6319 AC_SUBST([NO_PIE_CFLAGS])
6321 # Check if -no-pie works.
6322 AC_CACHE_CHECK([for -no-pie option],
6324 [saved_LDFLAGS="$LDFLAGS"
6325 LDFLAGS="$LDFLAGS -no-pie"
6326 AC_LINK_IFELSE([int main(void) {return 0;}],
6327 [gcc_cv_no_pie=yes],
6329 LDFLAGS="$saved_LDFLAGS"])
6330 if test "$gcc_cv_no_pie" = "yes"; then
6331 NO_PIE_FLAG="-no-pie"
6333 AC_SUBST([NO_PIE_FLAG])
6335 # Check linker supports '-z bndplt'
6336 ld_bndplt_support=no
6337 AC_MSG_CHECKING(linker -z bndplt option)
6338 if test x"$ld_is_gold" = xno; then
6339 if test $in_tree_ld = yes ; then
6340 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6341 ld_bndplt_support=yes
6343 elif test x$gcc_cv_ld != x; then
6344 # Check if linker supports -a bndplt option
6345 if $gcc_cv_ld --help 2>/dev/null | grep -- '-z bndplt' > /dev/null; then
6346 ld_bndplt_support=yes
6350 if test x"$ld_bndplt_support" = xyes; then
6351 AC_DEFINE(HAVE_LD_BNDPLT_SUPPORT, 1,
6352 [Define if your linker supports -z bndplt])
6354 AC_MSG_RESULT($ld_bndplt_support)
6356 # Check linker supports '--push-state'/'--pop-state'
6357 ld_pushpopstate_support=no
6358 AC_MSG_CHECKING(linker --push-state/--pop-state options)
6359 if test x"$ld_is_gold" = xno; then
6360 if test $in_tree_ld = yes ; then
6361 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6362 ld_pushpopstate_support=yes
6364 elif test x$gcc_cv_ld != x; then
6365 # Check if linker supports --push-state/--pop-state options
6366 if $gcc_cv_ld --help 2>/dev/null | grep -- '--push-state' > /dev/null; then
6367 ld_pushpopstate_support=yes
6371 if test x"$ld_pushpopstate_support" = xyes; then
6372 AC_DEFINE(HAVE_LD_PUSHPOPSTATE_SUPPORT, 1,
6373 [Define if your linker supports --push-state/--pop-state])
6375 AC_MSG_RESULT($ld_pushpopstate_support)
6377 # Configure the subdirectories
6378 # AC_CONFIG_SUBDIRS($subdirs)
6380 # Create the Makefile
6381 # and configure language subdirectories
6382 AC_CONFIG_FILES($all_outputs)
6384 AC_CONFIG_COMMANDS([default],
6386 case ${CONFIG_HEADERS} in
6387 *auto-host.h:config.in*)
6390 # Make sure all the subdirs exist.
6391 for d in $subdirs doc build common c-family
6393 test -d $d || mkdir $d
6396 [subdirs='$subdirs'])