2 # Process this file with autoconf to generate a configuration script.
4 # Copyright (C) 1997-2016 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[] = "$gcc_REVISION";
1788 /* FIXME plugins: We should make the version information more precise.
1789 One way to do is to add a checksum. */
1791 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1793 configuration_arguments};
1797 # Internationalization
1798 ZW_GNU_GETTEXT_SISTER_DIR
1800 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1801 # -liconv on the link line twice.
1802 case "$LIBINTL" in *$LIBICONV*)
1806 AC_ARG_ENABLE(secureplt,
1807 [AS_HELP_STRING([--enable-secureplt],
1808 [enable -msecure-plt by default for PowerPC])],
1811 AC_ARG_ENABLE(leading-mingw64-underscores,
1812 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1813 [enable leading underscores on 64 bit mingw targets]),
1815 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1816 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1817 [Define if we should use leading underscore on 64 bit mingw targets])])
1820 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1823 AC_ARG_ENABLE(frame-pointer,
1824 [AS_HELP_STRING([--enable-frame-pointer],
1825 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1828 linux* | darwin[[8912]]*)
1829 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1831 enable_frame_pointer=no
1834 enable_frame_pointer=yes
1839 # Windows32 Registry support for specifying GCC installation paths.
1840 AC_ARG_ENABLE(win32-registry,
1841 [AS_HELP_STRING([--disable-win32-registry],
1842 [disable lookup of installation paths in the
1843 Registry on Windows hosts])
1844 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1845 AS_HELP_STRING([--enable-win32-registry=KEY],
1846 [use KEY instead of GCC version as the last portion
1847 of the registry key])],,)
1850 win32 | pe | cygwin* | mingw32*)
1851 if test "x$enable_win32_registry" != xno; then
1852 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1855 if test "x$enable_win32_registry" != xno; then
1856 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1857 [Define to 1 if installation paths should be looked up in the Windows
1858 Registry. Ignored on non-Windows hosts.])
1860 if test "x$enable_win32_registry" != xyes \
1861 && test "x$enable_win32_registry" != x; then
1862 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1863 [Define to be the last component of the Windows registry key under which
1864 to look for installation paths. The full key used will be
1865 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1866 The default is the GCC version number.])
1872 # Get an absolute path to the GCC top-level source directory
1873 holddir=`${PWDCMD-pwd}`
1875 topdir=`${PWDCMD-pwd}`
1878 # Conditionalize the makefile for this host machine.
1880 for f in ${host_xmake_file}
1882 if test -f ${srcdir}/config/$f
1884 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1888 # Conditionalize the makefile for this target machine.
1890 for f in ${tmake_file}
1892 if test -f ${srcdir}/config/$f
1894 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1897 tmake_file="${tmake_file_}"
1899 out_object_file=`basename $out_file .c`.o
1900 common_out_object_file=`basename $common_out_file .c`.o
1902 tm_file_list="options.h"
1903 tm_include_list="options.h insn-constants.h"
1904 for f in $tm_file; do
1907 f=`echo $f | sed 's/^..//'`
1908 tm_file_list="${tm_file_list} $f"
1909 tm_include_list="${tm_include_list} $f"
1912 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1913 tm_include_list="${tm_include_list} $f"
1916 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1917 tm_include_list="${tm_include_list} config/$f"
1924 for f in $tm_p_file; do
1927 tm_p_file_list="${tm_p_file_list} $f"
1928 tm_p_include_list="${tm_p_include_list} $f"
1931 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1932 tm_p_include_list="${tm_p_include_list} config/$f"
1938 for f in $xm_file; do
1941 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1942 xm_include_list="${xm_include_list} $f"
1945 xm_file_list="${xm_file_list} $f"
1946 xm_include_list="${xm_include_list} $f"
1949 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1950 xm_include_list="${xm_include_list} config/$f"
1956 host_xm_include_list=
1957 for f in $host_xm_file; do
1960 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1961 host_xm_include_list="${host_xm_include_list} $f"
1964 host_xm_file_list="${host_xm_file_list} $f"
1965 host_xm_include_list="${host_xm_include_list} $f"
1968 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1969 host_xm_include_list="${host_xm_include_list} config/$f"
1975 for f in $build_xm_file; do
1978 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1979 build_xm_include_list="${build_xm_include_list} $f"
1981 auto-build.h | auto-host.h )
1982 build_xm_file_list="${build_xm_file_list} $f"
1983 build_xm_include_list="${build_xm_include_list} $f"
1986 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1987 build_xm_include_list="${build_xm_include_list} config/$f"
1992 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1993 # cross-compiler which does not use the native headers and libraries.
1994 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1995 CROSS= AC_SUBST(CROSS)
1996 ALL=all.internal AC_SUBST(ALL)
1997 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1999 if test "x$with_build_sysroot" != x; then
2000 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
2002 # This value is used, even on a native system, because
2003 # CROSS_SYSTEM_HEADER_DIR is just
2004 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
2005 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
2008 if test x$host != x$target
2010 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
2012 SYSTEM_HEADER_DIR=$build_system_header_dir
2015 if test "x$with_headers" = x; then
2022 elif test "x$TARGET_SYSTEM_ROOT" != x; then
2023 SYSTEM_HEADER_DIR=$build_system_header_dir
2026 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
2027 if test "x$with_headers" != x && test "x$with_headers" != xyes; then
2028 target_header_dir=$with_headers
2029 elif test "x$with_sysroot" = x; then
2030 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
2031 elif test "x$with_build_sysroot" != "x"; then
2032 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
2033 elif test "x$with_sysroot" = xyes; then
2034 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
2036 target_header_dir="${with_sysroot}${native_system_header_dir}"
2039 target_header_dir=${native_system_header_dir}
2042 # If this is a cross-compiler that does not
2043 # have its own set of headers then define
2046 # If this is using newlib, without having the headers available now,
2047 # then define inhibit_libc in LIBGCC2_CFLAGS.
2048 # This prevents libgcc2 from containing any code which requires libc
2050 : ${inhibit_libc=false}
2051 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
2052 test x$with_newlib = xyes ; } &&
2053 { test "x$with_headers" = xno || test ! -f "$target_header_dir/stdio.h"; } ; then
2056 AC_SUBST(inhibit_libc)
2058 # When building gcc with a cross-compiler, we need to adjust things so
2059 # that the generator programs are still built with the native compiler.
2060 # Also, we cannot run fixincludes.
2062 # These are the normal (build=host) settings:
2063 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
2064 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
2065 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
2066 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
2067 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
2068 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
2070 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS)' AC_SUBST(BUILD_NO_PIE_CFLAGS)
2071 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG)' AC_SUBST(BUILD_NO_PIE_FLAG)
2073 # And these apply if build != host, or we are generating coverage data
2074 if test x$build != x$host || test "x$coverage_flags" != x
2076 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
2077 BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CXXFLAGS_FOR_BUILD)'
2078 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
2080 NO_PIE_CFLAGS_FOR_BUILD=${NO_PIE_CFLAGS_FOR_BUILD-${NO_PIE_CFLAGS}}
2081 NO_PIE_FLAG_FOR_BUILD=${NO_PIE_FLAG_FOR_BUILD-${NO_PIE_FLAG}}
2082 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS_FOR_BUILD)'
2083 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG_FOR_BUILD)'
2085 AC_SUBST(NO_PIE_CFLAGS_FOR_BUILD)
2086 AC_SUBST(NO_PIE_FLAG_FOR_BUILD)
2088 # Expand extra_headers to include complete path.
2089 # This substitutes for lots of t-* files.
2091 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
2092 for file in ${extra_headers} ; do
2093 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
2096 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
2097 if test x"$use_gcc_tgmath" = xyes
2098 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
2101 # Define collect2 in Makefile.
2102 case $host_can_use_collect2 in
2104 *) collect2='collect2$(exeext)' ;;
2106 AC_SUBST([collect2])
2108 # Add a definition of USE_COLLECT2 if system wants one.
2109 case $use_collect2 in
2110 no) use_collect2= ;;
2113 host_xm_defines="${host_xm_defines} USE_COLLECT2"
2114 xm_defines="${xm_defines} USE_COLLECT2"
2115 case $host_can_use_collect2 in
2117 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
2123 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
2124 [Define to the name of the LTO plugin DSO that must be
2125 passed to the linker's -plugin=LIB option.])
2127 # ---------------------------
2128 # Assembler & linker features
2129 # ---------------------------
2131 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
2132 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
2133 # However when ld-new is first executed from the build tree, libtool will
2134 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
2135 # to the build tree. While doing this we need to use the previous-stage
2136 # linker, or we have an infinite loop. The presence of a shell script as
2137 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
2138 # the gcc/collect-ld script. So we need to know how libtool works, or
2139 # exec-tool will fail.
2141 m4_defun([_LT_CONFIG_COMMANDS], [])
2144 AC_SUBST(enable_fast_install)
2146 # Identify the assembler which will work hand-in-glove with the newly
2147 # built GCC, so that we can examine its features. This is the assembler
2148 # which will be driven by the driver program.
2150 # If build != host, and we aren't building gas in-tree, we identify a
2151 # build->target assembler and hope that it will have the same features
2152 # as the host->target assembler we'll be using.
2153 gcc_cv_gas_major_version=
2154 gcc_cv_gas_minor_version=
2155 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
2157 m4_pattern_allow([AS_FOR_TARGET])dnl
2158 AS_VAR_SET_IF(gcc_cv_as,, [
2159 if test -x "$DEFAULT_ASSEMBLER"; then
2160 gcc_cv_as="$DEFAULT_ASSEMBLER"
2161 elif test -f $gcc_cv_as_gas_srcdir/configure.ac \
2162 && test -f ../gas/Makefile \
2163 && test x$build = x$host; then
2164 gcc_cv_as=../gas/as-new$build_exeext
2165 elif test -x as$build_exeext; then
2166 # Build using assembler in the current directory.
2167 gcc_cv_as=./as$build_exeext
2168 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
2169 gcc_cv_as="$AS_FOR_TARGET"
2171 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
2174 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
2175 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
2176 case "$ORIGINAL_AS_FOR_TARGET" in
2177 ./as | ./as$build_exeext) ;;
2178 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2181 AC_MSG_CHECKING(what assembler to use)
2182 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
2183 # Single tree build which includes gas. We want to prefer it
2184 # over whatever linker top-level may have detected, since
2185 # we'll use what we're building after installation anyway.
2186 AC_MSG_RESULT(newly built gas)
2188 _gcc_COMPUTE_GAS_VERSION
2189 in_tree_gas_is_elf=no
2190 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
2191 || (grep 'obj_format = multi' ../gas/Makefile \
2192 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
2194 in_tree_gas_is_elf=yes
2197 AC_MSG_RESULT($gcc_cv_as)
2203 [[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]],
2204 [case "${enableval}" in
2210 install_gold_as_default=no
2212 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
2213 [case "${enableval}" in
2215 install_gold_as_default=yes
2218 if test x${default_ld} != x; then
2219 install_gold_as_default=yes
2225 AC_MSG_ERROR([invalid --enable-gold argument])
2229 # Identify the linker which will work hand-in-glove with the newly
2230 # built GCC, so that we can examine its features. This is the linker
2231 # which will be driven by the driver program.
2233 # If build != host, and we aren't building gas in-tree, we identify a
2234 # build->target linker and hope that it will have the same features
2235 # as the host->target linker we'll be using.
2236 gcc_cv_gld_major_version=
2237 gcc_cv_gld_minor_version=
2238 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2239 gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold
2240 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2242 AS_VAR_SET_IF(gcc_cv_ld,, [
2243 if test -x "$DEFAULT_LINKER"; then
2244 gcc_cv_ld="$DEFAULT_LINKER"
2245 elif test $install_gold_as_default = yes \
2246 && test -f $gcc_cv_ld_gold_srcdir/configure.ac \
2247 && test -f ../gold/Makefile \
2248 && test x$build = x$host; then
2249 gcc_cv_ld=../gold/ld-new$build_exeext
2250 elif test -f $gcc_cv_ld_gld_srcdir/configure.ac \
2251 && test -f ../ld/Makefile \
2252 && test x$build = x$host; then
2253 gcc_cv_ld=../ld/ld-new$build_exeext
2254 elif test -x collect-ld$build_exeext; then
2255 # Build using linker in the current directory.
2256 gcc_cv_ld=./collect-ld$build_exeext
2257 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2258 gcc_cv_ld="$LD_FOR_TARGET"
2260 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2263 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2264 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2265 # if the PLUGIN_LD is set ld-new, just have it as ld
2266 # as that is the installed named.
2267 if test x$PLUGIN_LD_SUFFIX = xld-new \
2268 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2271 AC_ARG_WITH(plugin-ld,
2272 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2273 [if test x"$withval" != x; then
2274 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2275 PLUGIN_LD_SUFFIX="$withval"
2277 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2278 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2280 # Check to see if we are using gold instead of ld
2281 AC_MSG_CHECKING(whether we are using gold)
2283 if test x$gcc_cv_ld != x; then
2284 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2285 | grep "GNU gold" > /dev/null; then
2289 AC_MSG_RESULT($ld_is_gold)
2291 AC_MSG_CHECKING(gold linker with split stack support as non default)
2292 # Check to see if default ld is not gold, but gold is
2293 # available and has support for split stack. If gcc was configured
2294 # with gold then no checking is done.
2296 if test x$ld_is_gold = xno && which ${gcc_cv_ld}.gold >/dev/null 2>&1; then
2298 # For platforms other than powerpc64*, enable as appropriate.
2301 ld_gold=`which ${gcc_cv_ld}.gold`
2302 # Make sure this gold has minimal split stack support
2303 if $ld_gold --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then
2304 ld_vers=`$ld_gold --version | sed 1q`
2305 gold_vers=`echo $ld_vers | sed -n \
2306 -e 's,^[[^)]]*[[ ]]\([[0-9]][[0-9]]*\.[[0-9]][[0-9]]*[[^)]]*\)) .*$,\1,p'`
2308 # check that the gold version contains the complete split stack support
2309 # on powerpc64 big and little endian
2311 case "$gold_vers" in
2312 2.25.[[1-9]]*|2.2[[6-9]][[.0-9]]*|2.[[3-9]][[.0-9]]*|[[3-9]].[[.0-9]]*) gold_non_default=yes
2314 *) gold_non_default=no
2320 if test $gold_non_default = yes; then
2321 AC_DEFINE(HAVE_GOLD_NON_DEFAULT_SPLIT_STACK, 1,
2322 [Define if the gold linker supports split stack and is available as a non-default])
2325 AC_MSG_RESULT($gold_non_default)
2327 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2328 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2329 case "$ORIGINAL_LD_FOR_TARGET" in
2330 ./collect-ld | ./collect-ld$build_exeext) ;;
2331 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2334 AC_MSG_CHECKING(what linker to use)
2335 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2336 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2337 # Single tree build which includes ld. We want to prefer it
2338 # over whatever linker top-level may have detected, since
2339 # we'll use what we're building after installation anyway.
2340 AC_MSG_RESULT(newly built ld)
2342 in_tree_ld_is_elf=no
2343 if (grep 'EMUL = .*elf' ../ld/Makefile \
2344 || grep 'EMUL = .*linux' ../ld/Makefile \
2345 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2346 in_tree_ld_is_elf=yes
2347 elif test "$ld_is_gold" = yes; then
2348 in_tree_ld_is_elf=yes
2350 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
2353 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2354 if test x$gcc_cv_gld_version != x; then
2358 case $gcc_cv_gld_version in
2361 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2364 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2365 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2367 ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext
2368 ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext
2370 AC_MSG_RESULT($gcc_cv_ld)
2372 gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext`
2373 ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext
2374 ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext
2377 AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET)
2378 AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET)
2380 # Figure out what nm we will be using.
2381 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2382 AS_VAR_SET_IF(gcc_cv_nm,, [
2383 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2384 && test -f ../binutils/Makefile \
2385 && test x$build = x$host; then
2386 gcc_cv_nm=../binutils/nm-new$build_exeext
2387 elif test -x nm$build_exeext; then
2388 gcc_cv_nm=./nm$build_exeext
2389 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2390 gcc_cv_nm="$NM_FOR_TARGET"
2392 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2395 AC_MSG_CHECKING(what nm to use)
2396 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2397 # Single tree build which includes binutils.
2398 AC_MSG_RESULT(newly built nm)
2401 AC_MSG_RESULT($gcc_cv_nm)
2405 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2406 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2407 case "$ORIGINAL_NM_FOR_TARGET" in
2408 ./nm | ./nm$build_exeext) ;;
2409 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2413 # Figure out what objdump we will be using.
2414 AS_VAR_SET_IF(gcc_cv_objdump,, [
2415 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2416 && test -f ../binutils/Makefile \
2417 && test x$build = x$host; then
2418 # Single tree build which includes binutils.
2419 gcc_cv_objdump=../binutils/objdump$build_exeext
2420 elif test -x objdump$build_exeext; then
2421 gcc_cv_objdump=./objdump$build_exeext
2422 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2423 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2425 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2428 AC_MSG_CHECKING(what objdump to use)
2429 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2430 # Single tree build which includes binutils.
2431 AC_MSG_RESULT(newly built objdump)
2432 elif test x$gcc_cv_objdump = x; then
2433 AC_MSG_RESULT(not found)
2435 AC_MSG_RESULT($gcc_cv_objdump)
2438 # Figure out what readelf we will be using.
2439 AS_VAR_SET_IF(gcc_cv_readelf,, [
2440 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2441 && test -f ../binutils/Makefile \
2442 && test x$build = x$host; then
2443 # Single tree build which includes binutils.
2444 gcc_cv_readelf=../binutils/readelf$build_exeext
2445 elif test -x readelf$build_exeext; then
2446 gcc_cv_readelf=./readelf$build_exeext
2447 elif ( set dummy $READELF_FOR_TARGET; test -x $[2] ); then
2448 gcc_cv_readelf="$READELF_FOR_TARGET"
2450 AC_PATH_PROG(gcc_cv_readelf, $READELF_FOR_TARGET)
2453 AC_MSG_CHECKING(what readelf to use)
2454 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2455 # Single tree build which includes binutils.
2456 AC_MSG_RESULT(newly built readelf)
2457 elif test x$gcc_cv_readelf = x; then
2458 AC_MSG_RESULT(not found)
2460 AC_MSG_RESULT($gcc_cv_readelf)
2463 # Figure out what assembler alignment features are present.
2464 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2468 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2469 [Define if your assembler supports .balign and .p2align.])])
2471 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2474 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2475 [Define if your assembler supports specifying the maximum number
2476 of bytes to skip when using the GAS .p2align command.])])
2478 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2481 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2482 [Define if your assembler supports .literal16.])])
2484 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2486 [conftest_label1: .word 0
2488 conftest_label2: .word 0
2490 [if test x$gcc_cv_nm != x; then
2491 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2492 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2493 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2495 else gcc_cv_as_subsection_m1=yes
2497 rm -f conftest.nm1 conftest.nm2
2499 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2500 [Define if your assembler supports .subsection and .subsection -1 starts
2501 emitting at the beginning of your section.])])
2503 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2506 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2508 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2510 [ .weakref foobar, barfnot],,
2511 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2513 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2516 .NSUBSPA $CODE$,COMDAT],,
2517 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2519 # .hidden needs to be supported in both the assembler and the linker,
2520 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2521 # This is irritatingly difficult to feature test for; we have to check the
2522 # date string after the version number. If we've got an in-tree
2523 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2525 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2528 conftest_s=' .globl foobar,hidden'
2531 conftest_s=' .hidden foobar
2535 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2536 [elf,2,13,0],, [$conftest_s])
2539 # Darwin as has some visibility support, though with a different syntax.
2540 gcc_cv_as_hidden=yes
2544 # gnu_indirect_function type is an extension proposed at
2545 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2546 # selection of function implementation
2547 AC_ARG_ENABLE(gnu-indirect-function,
2548 [AS_HELP_STRING([--enable-gnu-indirect-function],
2549 [enable the use of the @gnu_indirect_function to glibc systems])],
2550 [case $enable_gnu_indirect_function in
2552 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2553 Valid choices are 'yes' and 'no'.]) ;;
2555 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2557 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
2558 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
2559 [Define if your system supports gnu indirect functions.])
2563 if test $in_tree_ld != yes ; then
2564 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2565 if echo "$ld_ver" | grep GNU > /dev/null; then
2566 if test x"$ld_is_gold" = xyes; then
2567 # GNU gold --version looks like this:
2569 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2571 # We extract the binutils version which is more familiar and specific
2572 # than the gold version.
2573 ld_vers=`echo $ld_ver | sed -n \
2574 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2576 # GNU ld --version looks like this:
2578 # GNU ld (GNU Binutils) 2.21.51.20110225
2579 ld_vers=`echo $ld_ver | sed -n \
2580 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2582 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2583 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2584 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2585 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2589 # See acinclude.m4 (gcc_SUN_LD_VERSION) for the version number
2592 # Don't reuse gcc_gv_sun_ld_vers_* in case a linker other than
2593 # /usr/ccs/bin/ld has been configured.
2594 ld_ver=`$gcc_cv_ld -V 2>&1`
2595 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2596 ld_vers=`echo $ld_ver | sed -n \
2597 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2598 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2599 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2607 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2608 [[if test $in_tree_ld = yes ; then
2610 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2611 && test $in_tree_ld_is_elf = yes; then
2612 gcc_cv_ld_hidden=yes
2615 gcc_cv_ld_hidden=yes
2616 if test x"$ld_is_gold" = xyes; then
2618 elif echo "$ld_ver" | grep GNU > /dev/null; then
2620 mmix-knuth-mmixware)
2621 # The linker emits by default mmo, not ELF, so "no" is appropriate.
2625 if test 0"$ld_date" -lt 20020404; then
2626 if test -n "$ld_date"; then
2627 # If there was date string, but was earlier than 2002-04-04, fail
2629 elif test -z "$ld_vers"; then
2630 # If there was no date string nor ld version number, something is wrong
2633 test -z "$ld_vers_patch" && ld_vers_patch=0
2634 if test "$ld_vers_major" -lt 2; then
2636 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2637 gcc_cv_ld_hidden="no"
2638 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2646 gcc_cv_ld_hidden=yes
2649 # Darwin ld has some visibility support.
2650 gcc_cv_ld_hidden=yes
2652 hppa64*-*-hpux* | ia64*-*-hpux*)
2653 gcc_cv_ld_hidden=yes
2655 *-*-solaris2.1[0-9]*)
2656 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2657 # .symbolic was only added in Solaris 9 12/02.
2658 gcc_cv_ld_hidden=yes
2666 libgcc_visibility=no
2667 AC_SUBST(libgcc_visibility)
2668 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2669 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2670 libgcc_visibility=yes
2671 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2672 [Define if your assembler and linker support .hidden.])
2675 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2676 gcc_cv_ld_ro_rw_mix=unknown
2677 if test $in_tree_ld = yes ; then
2678 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2679 && test $in_tree_ld_is_elf = yes; then
2680 gcc_cv_ld_ro_rw_mix=read-write
2682 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2683 echo '.section myfoosect, "a"' > conftest1.s
2684 echo '.section myfoosect, "aw"' > conftest2.s
2685 echo '.byte 1' >> conftest2.s
2686 echo '.section myfoosect, "a"' > conftest3.s
2687 echo '.byte 0' >> conftest3.s
2688 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2689 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2690 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2691 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2692 conftest2.o conftest3.o > /dev/null 2>&1; then
2693 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2694 | sed -e '/myfoosect/!d' -e N`
2695 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2696 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2697 gcc_cv_ld_ro_rw_mix=read-only
2699 gcc_cv_ld_ro_rw_mix=read-write
2704 rm -f conftest.* conftest[123].*
2707 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2708 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2709 [Define if your linker links a mix of read-only
2710 and read-write sections into a read-write section.])
2712 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2714 gcc_AC_INITFINI_ARRAY
2716 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2717 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2725 [[# GAS versions before 2.11 do not support uleb128,
2726 # despite appearing to.
2727 # ??? There exists an elf-specific test that will crash
2728 # the assembler. Perhaps it's better to figure out whether
2729 # arbitrary sections are supported and try the test.
2730 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2731 if echo "$as_ver" | grep GNU > /dev/null; then
2732 as_vers=`echo $as_ver | sed -n \
2733 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2734 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2735 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2736 if test $as_major -eq 2 && test $as_minor -lt 11
2738 else gcc_cv_as_leb128=yes
2741 [AC_DEFINE(HAVE_AS_LEB128, 1,
2742 [Define if your assembler supports .sleb128 and .uleb128.])],
2743 [AC_DEFINE(HAVE_AS_LEB128, 0,
2744 [Define if your assembler supports .sleb128 and .uleb128.])])
2746 # Check if we have assembler support for unwind directives.
2747 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2754 .cfi_escape 1, 2, 3, 4, 5
2758 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2759 # read-only and read-write sections, we need to make sure that the
2760 # assembler used emits read-write .eh_frame sections.
2761 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2762 if test "x$gcc_cv_objdump" != x; then
2763 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2764 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2765 gcc_cv_as_cfi_directive=no
2768 i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*)
2769 # On Solaris/x86, make sure that GCC and assembler agree on using
2770 # read-only .eh_frame sections for 64-bit.
2771 if test x$gas = xyes; then
2772 as_ix86_64_opt="--64"
2774 as_ix86_64_opt="-xarch=amd64"
2776 if $gcc_cv_as $as_ix86_64_opt -o conftest.o conftest.s > /dev/null 2>&1 && \
2777 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2778 sed -e /.eh_frame/!d -e N | \
2779 grep READONLY > /dev/null; then
2780 gcc_cv_as_cfi_directive=yes
2782 gcc_cv_as_cfi_directive=no
2786 gcc_cv_as_cfi_directive=yes
2791 # no objdump, err on the side of caution
2792 gcc_cv_as_cfi_directive=no
2795 gcc_cv_as_cfi_directive=yes
2799 gcc_cv_as_cfi_directive=yes
2802 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2803 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2807 .cfi_adjust_cfa_offset 64
2809 .cfi_adjust_cfa_offset 128
2812 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2813 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2814 gcc_cv_as_cfi_advance_working=yes
2818 # no objdump, err on the side of caution
2819 gcc_cv_as_cfi_advance_working=no
2821 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2822 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2823 [`if test $gcc_cv_as_cfi_directive = yes \
2824 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2825 [Define 0/1 if your assembler supports CFI directives.])
2827 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2828 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2829 gcc_cv_as_cfi_personality_directive, ,,
2832 .cfi_personality 0, symbol
2834 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2835 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2836 then echo 1; else echo 0; fi`],
2837 [Define 0/1 if your assembler supports .cfi_personality.])
2839 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2840 gcc_cv_as_cfi_sections_directive, ,,
2842 .cfi_sections .debug_frame, .eh_frame
2846 win32 | pe | cygwin* | mingw32*)
2847 # Need to check that we generated the correct relocation for the
2848 # .debug_frame section. This was fixed for binutils 2.21.
2849 gcc_cv_as_cfi_sections_directive=no
2850 if test "x$gcc_cv_objdump" != x; then
2851 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2852 grep secrel > /dev/null; then
2853 gcc_cv_as_cfi_sections_directive=yes
2858 gcc_cv_as_cfi_sections_directive=yes
2861 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2862 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2863 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2864 then echo 1; else echo 0; fi`],
2865 [Define 0/1 if your assembler supports .cfi_sections.])
2867 # GAS versions up to and including 2.11.0 may mis-optimize
2869 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2877 .section .eh_frame,"aw",@progbits
2879 .4byte .LECIE1-.LSCIE1
2893 .4byte .LEFDE1-.LASFDE1
2895 .4byte .LASFDE1-__FRAME_BEGIN__
2903 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2904 cat > conftest.lit <<EOF
2905 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2906 0010 01000000 12000000 18000000 00000000 ................
2907 0020 08000000 04080000 0044 .........D @&t@
2909 cat > conftest.big <<EOF
2910 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2911 0010 00000001 00000012 00000018 00000000 ................
2912 0020 00000008 04000000 0844 .........D @&t@
2914 # If the assembler didn't choke, and we can objdump,
2915 # and we got the correct data, then succeed.
2916 # The text in the here-document typically retains its unix-style line
2917 # endings, while the output of objdump will use host line endings.
2918 # Therefore, use diff -b for the comparisons.
2919 if test x$gcc_cv_objdump != x \
2920 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2921 | tail -3 > conftest.got \
2922 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2923 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2925 gcc_cv_as_eh_frame=yes
2926 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2927 gcc_cv_as_eh_frame=buggy
2929 # Uh oh, what do we do now?
2930 gcc_cv_as_eh_frame=no
2933 if test $gcc_cv_as_eh_frame = buggy; then
2934 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2935 [Define if your assembler mis-optimizes .eh_frame data.])
2938 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2939 [elf,2,12,0], [--fatal-warnings],
2940 [.section .rodata.str, "aMS", @progbits, 1])
2941 if test $gcc_cv_as_shf_merge = no; then
2942 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2943 [elf,2,12,0], [--fatal-warnings],
2944 [.section .rodata.str, "aMS", %progbits, 1])
2946 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2947 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2948 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2950 gcc_GAS_CHECK_FEATURE([stabs directive], gcc_cv_as_stabs_directive, ,,
2951 [.stabs "gcc2_compiled.",60,0,0,0],,
2952 [AC_DEFINE(HAVE_AS_STABS_DIRECTIVE, 1,
2953 [Define if your assembler supports .stabs.])])
2955 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2956 gcc_cv_as_comdat_group,
2957 [elf,2,16,0], [--fatal-warnings],
2958 [.section .text,"axG",@progbits,.foo,comdat])
2959 if test $gcc_cv_as_comdat_group = yes; then
2960 gcc_cv_as_comdat_group_percent=no
2961 gcc_cv_as_comdat_group_group=no
2963 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2964 gcc_cv_as_comdat_group_percent,
2965 [elf,2,16,0], [--fatal-warnings],
2966 [.section .text,"axG",%progbits,.foo,comdat])
2967 if test $gcc_cv_as_comdat_group_percent = yes; then
2968 gcc_cv_as_comdat_group_group=no
2971 # Sun as uses a completely different syntax.
2976 .group foo,".text%foo",#comdat
2977 .section ".text%foo", #alloc,#execinstr,#progbits
2982 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2984 .group foo,.text%foo,#comdat
2985 .section .text%foo, "ax", @progbits
2991 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
2992 gcc_cv_as_comdat_group_group,
2996 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
2997 gcc_cv_as_comdat_group_group=no
3001 if test x"$ld_is_gold" = xyes; then
3003 elif test $in_tree_ld = yes ; then
3005 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3006 && test $in_tree_ld_is_elf = yes; then
3009 elif echo "$ld_ver" | grep GNU > /dev/null; then
3011 if test 0"$ld_date" -lt 20050308; then
3012 if test -n "$ld_date"; then
3013 # If there was date string, but was earlier than 2005-03-08, fail
3015 elif test "$ld_vers_major" -lt 2; then
3017 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
3024 *-*-solaris2.1[1-9]*)
3026 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
3027 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
3030 # If using Sun as for COMDAT group as emitted by GCC, one needs at
3031 # least ld version 1.2267.
3032 if test "$ld_vers_major" -gt 1; then
3034 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
3036 elif test "$ld_vers_minor" -ge 2267; then
3041 # Assume linkers other than GNU ld don't support COMDAT group.
3047 # Allow overriding the automatic COMDAT group tests above.
3048 AC_ARG_ENABLE(comdat,
3049 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
3050 [comdat_group="$enable_comdat"])
3051 if test $comdat_group = no; then
3052 gcc_cv_as_comdat_group=no
3053 gcc_cv_as_comdat_group_percent=no
3054 gcc_cv_as_comdat_group_group=no
3056 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
3057 [`if test $gcc_cv_as_comdat_group = yes \
3058 || test $gcc_cv_as_comdat_group_percent = yes \
3059 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
3060 [Define 0/1 if your assembler and linker support COMDAT groups.])
3062 gcc_GAS_CHECK_FEATURE([line table discriminator support],
3063 gcc_cv_as_discriminator,
3067 .loc 1 1 0 discriminator 1],,
3068 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
3069 [Define if your assembler supports the .loc discriminator sub-directive.])])
3071 # Thread-local storage - the check is heavily parameterized.
3080 .section ".tdata","awT",@progbits
3083 ldq $27,__tls_get_addr($29) !literal!1
3084 lda $16,foo($29) !tlsgd!1
3085 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
3086 ldq $27,__tls_get_addr($29) !literal!2
3087 lda $16,foo($29) !tlsldm!2
3088 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
3089 ldq $1,foo($29) !gotdtprel
3090 ldah $2,foo($29) !dtprelhi
3091 lda $3,foo($2) !dtprello
3092 lda $4,foo($29) !dtprel
3093 ldq $1,foo($29) !gottprel
3094 ldah $2,foo($29) !tprelhi
3095 lda $3,foo($2) !tprello
3096 lda $4,foo($29) !tprel'
3099 tls_as_opt=--fatal-warnings
3103 add_s r0,r0, @foo@tpoff'
3107 cris-*-*|crisv32-*-*)
3109 .section ".tdata","awT",@progbits
3116 tls_as_opt=--fatal-warnings
3120 .section ".tdata","awT",@progbits
3132 .section ".tdata","awT",@progbits
3136 addil LT%foo-$tls_gdidx$,gp
3137 ldo RT%foo-$tls_gdidx$(%r1),%arg0
3140 addil LT%foo-$tls_ldidx$,gp
3142 ldo RT%foo-$tls_ldidx$(%r1),%arg0
3143 addil LR%foo-$tls_dtpoff$,%ret0
3144 ldo RR%foo-$tls_dtpoff$(%r1),%t1
3146 addil LT%foo-$tls_ieoff$,gp
3147 ldw RT%foo-$tls_ieoff$(%r1),%t2
3150 addil LR%foo-$tls_leoff$,%t1
3151 ldo RR%foo-$tls_leoff$(%r1),%t2'
3154 tls_as_opt=--fatal-warnings
3158 .section ".tdata","awT",%progbits
3169 i[34567]86-*-* | x86_64-*-*)
3171 i[34567]86-*-solaris2.* | x86_64-*-solaris2.1[0-9]*)
3178 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3180 .section .tdata,"awt",@progbits'
3185 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
3186 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
3190 .section ".tdata","awT",@progbits'
3194 tls_as_opt="--fatal-warnings"
3198 conftest_s="$conftest_s
3202 leal foo@tlsgd(,%ebx,1), %eax
3203 leal foo@tlsldm(%ebx), %eax
3204 leal foo@dtpoff(%eax), %edx
3205 movl foo@gottpoff(%ebx), %eax
3206 subl foo@gottpoff(%ebx), %eax
3207 addl foo@gotntpoff(%ebx), %eax
3208 movl foo@indntpoff, %eax
3209 movl \$foo@tpoff, %eax
3210 subl \$foo@tpoff, %eax
3211 leal foo@ntpoff(%ecx), %eax"
3214 if test x$on_solaris = xyes; then
3216 yes) tls_as_opt="$tls_as_opt --64" ;;
3217 no) tls_as_opt="$tls_as_opt -xarch=amd64" ;;
3220 conftest_s="$conftest_s
3224 leaq foo@tlsgd(%rip), %rdi
3225 leaq foo@tlsld(%rip), %rdi
3226 leaq foo@dtpoff(%rax), %rdx
3227 movq foo@gottpoff(%rip), %rax
3228 movq \$foo@tpoff, %rax"
3234 .section ".tdata","awT",@progbits
3237 addl r16 = @ltoff(@dtpmod(foo#)), gp
3238 addl r17 = @ltoff(@dtprel(foo#)), gp
3239 addl r18 = @ltoff(@tprel(foo#)), gp
3240 addl r19 = @dtprel(foo#), gp
3241 adds r21 = @dtprel(foo#), r13
3242 movl r23 = @dtprel(foo#)
3243 addl r20 = @tprel(foo#), gp
3244 adds r22 = @tprel(foo#), r13
3245 movl r24 = @tprel(foo#)'
3248 tls_as_opt=--fatal-warnings
3252 .section .tdata,"awT",@progbits
3256 addik r5,r20,x@TLSGD
3257 addik r5,r20,x@TLSLDM'
3260 tls_as_opt='--fatal-warnings'
3264 .section .tdata,"awT",@progbits
3268 addiu $4, $28, %tlsgd(x)
3269 addiu $4, $28, %tlsldm(x)
3270 lui $4, %dtprel_hi(x)
3271 addiu $4, $4, %dtprel_lo(x)
3272 lw $4, %gottprel(x)($28)
3273 lui $4, %tprel_hi(x)
3274 addiu $4, $4, %tprel_lo(x)'
3277 tls_as_opt='-32 --fatal-warnings'
3281 .section .tdata,"awT",@progbits
3286 move.l x@TLSGD(%a5),%a0
3287 move.l x@TLSLDM(%a5),%a0
3288 move.l x@TLSLDO(%a5),%a0
3289 move.l x@TLSIE(%a5),%a0
3290 move.l x@TLSLE(%a5),%a0'
3293 tls_as_opt='--fatal-warnings'
3297 .section ".tdata","awT",@progbits'
3300 tls_as_opt="--fatal-warnings"
3304 .section ".tdata","awT",%progbits
3308 add x0, x0, #:tlsgd_lo12:x
3313 tls_as_opt='--fatal-warnings'
3317 .extern __get_tpointer
3335 .section ".tdata","awT",@progbits
3343 addi 3,2,ld0@got@tlsgd
3349 addi 3,2,x1@got@tlsld
3355 addis 9,3,x2@dtprel@ha
3356 addi 9,9,x2@dtprel@l
3359 ld 9,x3@got@dtprel(2)
3365 tls_as_opt="-a64 --fatal-warnings"
3369 .section ".tdata","awT",@progbits
3377 addi 3,31,ld0@got@tlsgd
3379 addi 3,31,x1@got@tlsld
3382 addis 9,3,x2@dtprel@ha
3383 addi 9,9,x2@dtprel@l
3384 lwz 9,x3@got@tprel(31)
3387 addis 9,2,x2@tprel@ha
3388 addi 9,9,x2@tprel@l'
3391 tls_as_opt="-a32 --fatal-warnings"
3395 .section ".tdata","awT",@progbits
3404 l %r1,foo@GOTNTPOFF(%r12)
3405 l %r1,0(%r1):tls_load:foo
3406 bas %r14,0(%r1,%r13):tls_gdcall:foo
3407 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3410 tls_as_opt="-m31 --fatal-warnings"
3414 .section ".tdata","awT",@progbits
3422 lg %r1,foo@GOTNTPOFF(%r12)
3423 larl %r1,foo@INDNTPOFF
3424 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3425 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3428 tls_as_opt="-m64 -Aesame --fatal-warnings"
3430 sh-*-* | sh[123456789lbe]*-*-*)
3432 .section ".tdata","awT",@progbits
3442 tls_as_opt=--fatal-warnings
3446 sparc*-sun-solaris2.*)
3453 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3455 .section ".tdata",#alloc,#write,#tls'
3460 .section ".tdata","awT",@progbits'
3463 tls_as_opt="-32 --fatal-warnings"
3465 conftest_s="$conftest_s
3468 sethi %tgd_hi22(foo), %o0
3469 add %o0, %tgd_lo10(foo), %o1
3470 add %l7, %o1, %o0, %tgd_add(foo)
3471 call __tls_get_addr, %tgd_call(foo)
3472 sethi %tldm_hi22(foo), %l1
3473 add %l1, %tldm_lo10(foo), %l2
3474 add %l7, %l2, %o0, %tldm_add(foo)
3475 call __tls_get_addr, %tldm_call(foo)
3476 sethi %tldo_hix22(foo), %l3
3477 xor %l3, %tldo_lox10(foo), %l4
3478 add %o0, %l4, %l5, %tldo_add(foo)
3479 sethi %tie_hi22(foo), %o3
3480 add %o3, %tie_lo10(foo), %o3
3481 ld [%l7 + %o3], %o2, %tie_ld(foo)
3482 add %g7, %o2, %o4, %tie_add(foo)
3483 sethi %tle_hix22(foo), %l1
3484 xor %l1, %tle_lox10(foo), %o5
3485 ld [%g7 + %o5], %o1"
3489 .section ".tdata","awT",@progbits
3492 addli r0, zero, tls_gd(foo)
3493 auli r0, zero, tls_gd_ha16(foo)
3494 addli r0, r0, tls_gd_lo16(foo)
3496 addli r0, zero, tls_ie(foo)
3497 auli r0, r0, tls_ie_ha16(foo)
3498 addli r0, r0, tls_ie_lo16(foo)'
3501 tls_as_opt="--fatal-warnings"
3505 .section ".tdata","awT",@progbits
3508 shl16insli r0, zero, hw0_last_tls_gd(foo)
3509 shl16insli r0, zero, hw1_last_tls_gd(foo)
3510 shl16insli r0, r0, hw0_tls_gd(foo)
3512 shl16insli r0, zero, hw1_last_tls_ie(foo)
3513 shl16insli r0, r0, hw0_tls_ie(foo)'
3516 tls_as_opt="--fatal-warnings"
3520 .section ".tdata","awT",@progbits
3523 movi a8, foo@TLSFUNC
3524 movi a10, foo@TLSARG
3525 callx8.tls a8, foo@TLSCALL'
3532 if test "x$enable_tls" = xno ; then
3533 : # TLS explicitly disabled.
3534 elif test "x$enable_tls" = xyes ; then
3535 set_have_as_tls=yes # TLS explicitly enabled.
3536 elif test -z "$tls_first_major"; then
3537 : # If we don't have a check, assume no support.
3539 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3540 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3541 [set_have_as_tls=yes])
3543 if test $set_have_as_tls = yes ; then
3544 AC_DEFINE(HAVE_AS_TLS, 1,
3545 [Define if your assembler and linker support thread-local storage.])
3548 # Target-specific assembler checks.
3550 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3551 gcc_cv_ld_static_dynamic=no
3552 gcc_cv_ld_static_option='-Bstatic'
3553 gcc_cv_ld_dynamic_option='-Bdynamic'
3554 if test $in_tree_ld = yes ; then
3555 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3556 gcc_cv_ld_static_dynamic=yes
3558 elif test x$gcc_cv_ld != x; then
3559 # Check if linker supports -Bstatic/-Bdynamic option
3560 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3561 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3562 gcc_cv_ld_static_dynamic=yes
3565 # AIX ld uses -b flags
3566 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
3567 gcc_cv_ld_static_dynamic=yes
3568 gcc_cv_ld_static_option="-bstatic"
3569 gcc_cv_ld_dynamic_option="-bdynamic"
3571 # HP-UX ld uses -a flags to select between shared and archive.
3573 if test x"$gnu_ld" = xno; then
3574 gcc_cv_ld_static_dynamic=yes
3575 gcc_cv_ld_static_option="-aarchive_shared"
3576 gcc_cv_ld_dynamic_option="-adefault"
3579 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3581 gcc_cv_ld_static_dynamic=yes
3586 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3587 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3588 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3589 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3590 [Define to the linker option to disable use of shared objects.])
3591 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3592 [Define to the linker option to enable use of shared objects.])
3594 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3596 if test x"$demangler_in_ld" = xyes; then
3597 AC_MSG_CHECKING(linker --demangle support)
3598 gcc_cv_ld_demangle=no
3599 if test $in_tree_ld = yes; then
3600 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3601 gcc_cv_ld_demangle=yes
3603 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3604 # Check if the GNU linker supports --demangle option
3605 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3606 gcc_cv_ld_demangle=yes
3609 if test x"$gcc_cv_ld_demangle" = xyes; then
3610 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3611 [Define if your linker supports --demangle option.])
3613 AC_MSG_RESULT($gcc_cv_ld_demangle)
3616 AC_MSG_CHECKING(linker plugin support)
3618 if test -f liblto_plugin.la; then
3619 save_ld_ver="$ld_ver"
3620 save_ld_vers_major="$ld_vers_major"
3621 save_ld_vers_minor="$ld_vers_minor"
3622 save_ld_is_gold="$ld_is_gold"
3626 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3628 # FIXME: ld_is_gold?
3629 ld_vers_major="$gcc_cv_gld_major_version"
3630 ld_vers_minor="$gcc_cv_gld_minor_version"
3632 # Determine plugin linker version.
3633 # FIXME: Partial duplicate from above, generalize.
3635 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3636 if echo "$ld_ver" | grep GNU > /dev/null; then
3637 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3639 ld_vers=`echo $ld_ver | sed -n \
3640 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3642 ld_vers=`echo $ld_ver | sed -n \
3643 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3645 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3646 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3651 # Determine plugin support.
3652 if echo "$ld_ver" | grep GNU > /dev/null; then
3653 # Require GNU ld or gold 2.21+ for plugin support by default.
3654 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3656 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3657 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3662 ld_ver="$save_ld_ver"
3663 ld_vers_major="$save_ld_vers_major"
3664 ld_vers_minor="$save_ld_vers_minor"
3665 ld_is_gold="$save_ld_is_gold"
3667 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3668 [Define to the level of your linker's plugin support.])
3669 AC_MSG_RESULT($gcc_cv_lto_plugin)
3671 # Target OS-specific assembler checks.
3673 case "$target_os" in
3675 gcc_GAS_CHECK_FEATURE([-mmacosx-version-min option],
3676 gcc_cv_as_mmacosx_version_min,,
3677 [-mmacosx-version-min=10.1], [.text],,
3678 [AC_DEFINE(HAVE_AS_MMACOSX_VERSION_MIN_OPTION, 1,
3679 [Define if your Mac OS X assembler supports the -mmacos-version-min option.])])
3683 # Target CPU-specific assembler checks.
3687 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,,
3688 [-mabi=lp64], [.text],,,)
3689 if test x$gcc_cv_as_aarch64_mabi = xyes; then
3690 AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
3691 [Define if your assembler supports the -mabi option.])
3693 if test x$with_abi = xilp32; then
3694 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3695 Upgrade the Assembler.])
3697 if test x"$with_multilib_list" = xdefault; then
3698 TM_MULTILIB_CONFIG=lp64
3700 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
3701 for aarch64_multilib in ${aarch64_multilibs}; do
3702 case ${aarch64_multilib} in
3704 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3705 Upgrade the Assembler.])
3713 # Check if we have binutils support for relocations types needed by -fpic
3714 gcc_GAS_CHECK_FEATURE([-fpic relocs], gcc_cv_as_aarch64_picreloc,,,
3717 ldr x0, [[x2, #:gotpage_lo15:globalsym]]
3718 ],,[AC_DEFINE(HAVE_AS_SMALL_PIC_RELOCS, 1,
3719 [Define if your assembler supports relocs needed by -fpic.])])
3720 # Enable default workaround for AArch64 Cortex-A53 erratum 835769.
3721 AC_ARG_ENABLE(fix-cortex-a53-835769,
3723 AS_HELP_STRING([--enable-fix-cortex-a53-835769],
3724 [enable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3725 AS_HELP_STRING([--disable-fix-cortex-a53-835769],
3726 [disable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3731 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1"
3736 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\
3737 Valid choices are 'yes' and 'no'.])
3743 # Enable default workaround for AArch64 Cortex-A53 erratum 843419.
3744 AC_ARG_ENABLE(fix-cortex-a53-843419,
3746 AS_HELP_STRING([--enable-fix-cortex-a53-843419],
3747 [enable workaround for AArch64 Cortex-A53 erratum 843419 by default])
3748 AS_HELP_STRING([--disable-fix-cortex-a53-843419],
3749 [disable workaround for AArch64 Cortex-A53 erratum 843419 by default])
3754 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1"
3759 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\
3760 Valid choices are 'yes' and 'no'.])
3768 # All TARGET_ABI_OSF targets.
3769 alpha*-*-linux* | alpha*-*-*bsd*)
3770 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3771 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3774 extbl $3, $2, $3 !lituse_bytoff!1
3775 ldq $2, a($29) !literal!1
3776 ldq $4, b($29) !literal!2
3777 ldq_u $3, 0($2) !lituse_base!1
3778 ldq $27, f($29) !literal!5
3779 jsr $26, ($27), f !lituse_jsr!5
3780 ldah $29, 0($26) !gpdisp!3
3781 lda $0, c($29) !gprel
3782 ldah $1, d($29) !gprelhigh
3783 lda $1, d($1) !gprellow
3784 lda $29, 0($29) !gpdisp!3],,
3785 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3786 [Define if your assembler supports explicit relocations.])])
3787 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3788 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3791 ldq $27, a($29) !literal!1
3792 jsr $26, ($27), a !lituse_jsrdirect!1],,
3793 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3794 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3798 gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax,,
3799 [--mlink-relax], [.text],,
3800 [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1,
3801 [Define if your avr assembler supports --mlink-relax option.])])
3803 gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,,
3805 [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1,
3806 [Define if your avr assembler supports -mrmw option.])])
3810 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3811 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3812 [-no-mul-bug-abort], [.text],,
3813 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3814 [Define if your assembler supports the -no-mul-bug-abort option.])])
3818 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3819 [.register %g2, #scratch],,
3820 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3821 [Define if your assembler supports .register.])])
3823 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3825 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3826 [Define if your assembler supports -relax option.])])
3828 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3829 gcc_cv_as_sparc_gotdata_op,,
3836 sethi %gdop_hix22(foo), %g1
3837 xor %g1, %gdop_lox10(foo), %g1
3838 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3839 [if test x$gcc_cv_ld != x \
3840 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3841 if test x$gcc_cv_objdump != x; then
3842 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3843 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3844 gcc_cv_as_sparc_gotdata_op=no
3846 gcc_cv_as_sparc_gotdata_op=yes
3851 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3852 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3854 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3855 gcc_cv_as_sparc_ua_pcrel,,
3863 .uaword %r_disp32(foo)],
3864 [if test x$gcc_cv_ld != x \
3865 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3866 gcc_cv_as_sparc_ua_pcrel=yes
3869 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3870 [Define if your assembler and linker support unaligned PC relative relocs.])
3872 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3873 gcc_cv_as_sparc_ua_pcrel_hidden,,
3878 .uaword %r_disp32(foo)
3879 .byte 0x32, 0x33, 0x34
3884 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3885 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3886 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3887 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3888 if $gcc_cv_objdump -R conftest 2> /dev/null \
3889 | grep 'DISP32' > /dev/null 2>&1; then
3892 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3896 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3897 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3898 ]) # unaligned pcrel relocs
3900 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3901 gcc_cv_as_sparc_offsetable_lo10,,
3904 or %g1, %lo(ab) + 12, %g1
3905 or %g1, %lo(ab + 12), %g1],
3906 [if test x$gcc_cv_objdump != x \
3907 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3908 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3909 gcc_cv_as_sparc_offsetable_lo10=yes
3911 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3912 [Define if your assembler supports offsetable %lo().])])
3914 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
3915 gcc_cv_as_sparc_fmaf,,
3918 .register %g2, #scratch
3919 .register %g3, #scratch
3921 fmaddd %f0, %f2, %f4, %f6
3922 addxccc %g1, %g2, %g3
3923 fsrl32 %f2, %f4, %f8
3924 fnaddd %f10, %f12, %f14],,
3925 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
3926 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
3928 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
3929 gcc_cv_as_sparc_sparc4,,
3932 .register %g2, #scratch
3933 .register %g3, #scratch
3936 1: cwbneg %g2, %g3, 1f
3939 aes_kexpand0 %f4, %f6, %f8
3940 des_round %f38, %f40, %f42, %f44
3941 camellia_f %f54, %f56, %f58, %f60
3942 kasumi_fi_xor %f46, %f48, %f50, %f52],,
3943 [AC_DEFINE(HAVE_AS_SPARC4, 1,
3944 [Define if your assembler supports SPARC4 instructions.])])
3946 gcc_GAS_CHECK_FEATURE([SPARC5 and VIS 4.0 instructions],
3947 gcc_cv_as_sparc_sparc5,,
3950 .register %g2, #scratch
3951 .register %g3, #scratch
3954 fpadd8 %f0, %f2, %f4],,
3955 [AC_DEFINE(HAVE_AS_SPARC5_VIS4, 1,
3956 [Define if your assembler supports SPARC5 and VIS 4.0 instructions.])])
3958 gcc_GAS_CHECK_FEATURE([LEON instructions],
3959 gcc_cv_as_sparc_leon,,
3962 .register %g2, #scratch
3963 .register %g3, #scratch
3967 casa [[%g2]] 0xb, %g3, %g1],,
3968 [AC_DEFINE(HAVE_AS_LEON, 1,
3969 [Define if your assembler supports LEON instructions.])])
3973 i[34567]86-*-* | x86_64-*-*)
3977 # Full C++ conformance when using a shared libstdc++-v3 requires some
3978 # support from the Cygwin DLL, which in more recent versions exports
3979 # wrappers to aid in interposing and redirecting operators new, delete,
3980 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3981 # are configuring for a version of Cygwin that exports the wrappers.
3982 if test x$host = x$target && test x$host_cpu = xi686; then
3983 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3985 # Can't check presence of libc functions during cross-compile, so
3986 # we just have to assume we're building for an up-to-date target.
3987 gcc_ac_cygwin_dll_wrappers=yes
3989 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3990 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3991 [Define if you want to generate code by default that assumes that the
3992 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3995 cygwin* | pe | mingw32*)
3996 # Recent binutils allows the three-operand form of ".comm" on PE. This
3997 # definition is used unconditionally to initialise the default state of
3998 # the target option variable that governs usage of the feature.
3999 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
4000 [2,19,52],,[.comm foo,1,32])
4001 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
4002 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
4003 [Define if your assembler supports specifying the alignment
4004 of objects allocated using the GAS .comm command.])
4005 # Used for DWARF 2 in PE
4006 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
4007 gcc_cv_as_ix86_pe_secrel32,
4013 [if test x$gcc_cv_ld != x \
4014 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
4015 gcc_cv_as_ix86_pe_secrel32=yes
4018 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
4019 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
4020 # Test if the assembler supports the extended form of the .section
4021 # directive that specifies section alignment. LTO support uses this,
4022 # but normally only after installation, so we warn but don't fail the
4023 # configure if LTO is enabled but the assembler does not support it.
4024 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
4025 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
4026 if test x$gcc_cv_as_section_has_align != xyes; then
4027 case ",$enable_languages," in
4029 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
4036 # Test if the assembler supports the section flag 'e' for specifying
4037 # an excluded section.
4038 gcc_GAS_CHECK_FEATURE([.section with e], gcc_cv_as_section_has_e,
4039 [2,22,51], [--fatal-warnings],
4042 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
4043 [`if test $gcc_cv_as_section_has_e = yes; then echo 1; else echo 0; fi`],
4044 [Define if your assembler supports specifying the section flag e.])
4046 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
4047 gcc_cv_as_ix86_filds,,,
4048 [filds (%ebp); fists (%ebp)],,
4049 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
4050 [Define if your assembler uses filds and fists mnemonics.])])
4052 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
4053 gcc_cv_as_ix86_fildq,,,
4054 [fildq (%ebp); fistpq (%ebp)],,
4055 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
4056 [Define if your assembler uses fildq and fistq mnemonics.])])
4058 gcc_GAS_CHECK_FEATURE([cmov syntax],
4059 gcc_cv_as_ix86_cmov_sun_syntax,,,
4060 [cmovl.l %edx, %eax],,
4061 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
4062 [Define if your assembler supports the Sun syntax for cmov.])])
4064 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
4065 gcc_cv_as_ix86_ffreep,,,
4067 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
4068 [Define if your assembler supports the ffreep mnemonic.])])
4070 gcc_GAS_CHECK_FEATURE([.quad directive],
4071 gcc_cv_as_ix86_quad,,,
4073 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
4074 [Define if your assembler supports the .quad directive.])])
4076 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
4077 gcc_cv_as_ix86_sahf,,,
4080 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
4081 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
4083 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
4084 gcc_cv_as_ix86_interunit_movq,,,
4088 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
4089 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
4090 [Define if your assembler supports interunit movq mnemonic.])
4092 gcc_GAS_CHECK_FEATURE([hle prefixes],
4093 gcc_cv_as_ix86_hle,,,
4094 [lock xacquire cmpxchg %esi, (%ecx)],,
4095 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
4096 [Define if your assembler supports HLE prefixes.])])
4098 gcc_GAS_CHECK_FEATURE([swap suffix],
4099 gcc_cv_as_ix86_swap,,,
4100 [movl.s %esp, %ebp],,
4101 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
4102 [Define if your assembler supports the swap suffix.])])
4104 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
4105 gcc_cv_as_ix86_diff_sect_delta,,,
4113 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
4114 [Define if your assembler supports the subtraction of symbols in different sections.])])
4116 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
4117 gcc_cv_as_ix86_rep_lock_prefix,,,
4123 lock addl %edi, (%eax,%esi)
4124 lock orl $0, (%esp)],,
4125 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
4126 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
4128 gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
4129 gcc_cv_as_ix86_ud2,,,
4131 [AC_DEFINE(HAVE_AS_IX86_UD2, 1,
4132 [Define if your assembler supports the 'ud2' mnemonic.])])
4134 # Enforce 32-bit output with gas and gld.
4135 if test x$gas = xyes; then
4136 as_ix86_gas_32_opt="--32"
4138 if echo "$ld_ver" | grep GNU > /dev/null; then
4139 if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then
4140 ld_ix86_gld_32_opt="-melf_i386_sol2"
4142 ld_ix86_gld_32_opt="-melf_i386"
4146 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
4147 gcc_cv_as_ix86_tlsgdplt,,
4148 [$as_ix86_gas_32_opt],
4149 [call tls_gd@tlsgdplt],
4150 [if test x$gcc_cv_ld != x \
4151 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4152 gcc_cv_as_ix86_tlsgdplt=yes
4155 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
4156 [Define if your assembler and linker support @tlsgdplt.])])
4159 .section .tdata,"aw'$tls_section_flag'",@progbits
4161 .section .text,"ax",@progbits
4162 call tls_ld@tlsldmplt'
4164 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
4165 gcc_cv_as_ix86_tlsldmplt,,
4166 [$as_ix86_gas_32_opt],
4168 [if test x$gcc_cv_ld != x \
4169 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4170 gcc_cv_as_ix86_tlsldmplt=yes
4173 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT,
4174 [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`],
4175 [Define to 1 if your assembler and linker support @tlsldmplt.])
4178 .section .text,"ax",@progbits
4180 .type _start, @function
4182 leal value@tlsldm(%ebx), %eax
4183 call ___tls_get_addr@plt
4185 .section .tdata,"aw'$tls_section_flag'",@progbits
4186 .type value, @object
4188 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc],
4189 gcc_cv_as_ix86_tlsldm,,
4190 [$as_ix86_gas_32_opt],
4192 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4193 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then
4194 if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \
4195 || dis conftest 2>/dev/null | grep nop > /dev/null; then
4196 gcc_cv_as_ix86_tlsldm=yes
4200 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM,
4201 [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`],
4202 [Define to 1 if your assembler and linker support @tlsldm.])
4213 gcc_GAS_CHECK_FEATURE([R_386_GOT32X reloc],
4214 gcc_cv_as_ix86_got32x,,
4215 [$as_ix86_gas_32_opt],
4217 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4218 && test x$gcc_cv_readelf != x \
4219 && $gcc_cv_readelf --relocs --wide conftest.o 2>&1 \
4220 | grep R_386_GOT32X > /dev/null 2>&1 \
4221 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4222 if $gcc_cv_objdump -dw conftest 2>&1 \
4223 | grep 0xffffff > /dev/null 2>&1; then
4224 gcc_cv_as_ix86_got32x=no
4226 gcc_cv_as_ix86_got32x=yes
4230 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_GOT32X,
4231 [`if test x"$gcc_cv_as_ix86_got32x" = xyes; then echo 1; else echo 0; fi`],
4232 [Define 0/1 if your assembler and linker support @GOT.])
4234 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
4235 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],
4236 [$as_ix86_gas_32_opt],
4242 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
4243 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
4244 [Define true if the assembler supports '.long foo@GOTOFF'.])
4247 .section .text,"ax",@progbits
4249 .type _start, @function
4251 leal ld@tlsldm(%ecx), %eax
4252 call *___tls_get_addr@GOT(%ecx)
4253 leal gd@tlsgd(%ecx), %eax
4254 call *___tls_get_addr@GOT(%ecx)
4256 .section .tdata,"aw'$tls_section_flag'",@progbits
4264 gcc_GAS_CHECK_FEATURE([calling ___tls_get_addr via GOT],
4265 gcc_cv_as_ix86_tls_get_addr_via_got,,
4266 [$as_ix86_gas_32_opt],
4268 [if test x$gcc_cv_ld != x \
4269 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4270 gcc_cv_as_ix86_tls_get_addr_via_got=yes
4273 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLS_GET_ADDR_GOT,
4274 [`if test x"$gcc_cv_as_ix86_tls_get_addr_via_got" = xyes; then echo 1; else echo 0; fi`],
4275 [Define 0/1 if your assembler and linker support calling ___tls_get_addr via GOT.])
4279 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
4280 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
4282 addl r15 = @ltoffx(x#), gp
4284 ld8.mov r16 = [[r15]], x#],,
4285 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
4286 [Define if your assembler supports ltoffx and ldxmov relocations.])])
4294 gcc_GAS_CHECK_FEATURE([.machine directive support],
4295 gcc_cv_as_machine_directive,,,
4296 [ .machine ppc7400])
4297 if test x$gcc_cv_as_machine_directive != xyes; then
4298 echo "*** This target requires an assembler supporting \".machine\"" >&2
4299 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
4300 test x$build = x$target && exit 1
4306 *-*-aix*) conftest_s=' .machine "pwr5"
4309 *-*-darwin*) conftest_s=' .text
4311 *) conftest_s=' .machine power4
4316 gcc_GAS_CHECK_FEATURE([mfcr field support],
4317 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
4319 [AC_DEFINE(HAVE_AS_MFCRF, 1,
4320 [Define if your assembler supports mfcr field.])])
4323 *-*-aix*) conftest_s=' .machine "pwr5"
4326 *) conftest_s=' .machine power5
4331 gcc_GAS_CHECK_FEATURE([popcntb support],
4332 gcc_cv_as_powerpc_popcntb, [2,17,0],,
4334 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
4335 [Define if your assembler supports popcntb field.])])
4338 *-*-aix*) conftest_s=' .machine "pwr5x"
4341 *) conftest_s=' .machine power5
4346 gcc_GAS_CHECK_FEATURE([fp round support],
4347 gcc_cv_as_powerpc_fprnd, [2,17,0],,
4349 [AC_DEFINE(HAVE_AS_FPRND, 1,
4350 [Define if your assembler supports fprnd.])])
4353 *-*-aix*) conftest_s=' .machine "pwr6"
4356 *) conftest_s=' .machine power6
4361 gcc_GAS_CHECK_FEATURE([move fp gpr support],
4362 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
4364 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
4365 [Define if your assembler supports mffgpr and mftgpr.])])
4368 *-*-aix*) conftest_s=' .csect .text[[PR]]
4370 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
4374 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
4375 *) conftest_s=' .text
4377 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
4380 gcc_GAS_CHECK_FEATURE([rel16 relocs],
4381 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
4383 [AC_DEFINE(HAVE_AS_REL16, 1,
4384 [Define if your assembler supports R_PPC_REL16 relocs.])])
4387 *-*-aix*) conftest_s=' .machine "pwr6"
4390 *) conftest_s=' .machine power6
4395 gcc_GAS_CHECK_FEATURE([compare bytes support],
4396 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
4398 [AC_DEFINE(HAVE_AS_CMPB, 1,
4399 [Define if your assembler supports cmpb.])])
4402 *-*-aix*) conftest_s=' .machine "pwr6"
4405 *) conftest_s=' .machine power6
4410 gcc_GAS_CHECK_FEATURE([decimal float support],
4411 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
4413 [AC_DEFINE(HAVE_AS_DFP, 1,
4414 [Define if your assembler supports DFP instructions.])])
4417 *-*-aix*) conftest_s=' .machine "pwr7"
4420 *) conftest_s=' .machine power7
4425 gcc_GAS_CHECK_FEATURE([vector-scalar support],
4426 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
4428 [AC_DEFINE(HAVE_AS_VSX, 1,
4429 [Define if your assembler supports VSX instructions.])])
4432 *-*-aix*) conftest_s=' .machine "pwr7"
4435 *) conftest_s=' .machine power7
4440 gcc_GAS_CHECK_FEATURE([popcntd support],
4441 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
4443 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
4444 [Define if your assembler supports POPCNTD instructions.])])
4447 *-*-aix*) conftest_s=' .machine "pwr8"
4448 .csect .text[[PR]]';;
4449 *) conftest_s=' .machine power8
4453 gcc_GAS_CHECK_FEATURE([power8 support],
4454 gcc_cv_as_powerpc_power8, [2,19,2], -a32,
4456 [AC_DEFINE(HAVE_AS_POWER8, 1,
4457 [Define if your assembler supports POWER8 instructions.])])
4460 *-*-aix*) conftest_s=' .machine "pwr9"
4461 .csect .text[[PR]]';;
4462 *) conftest_s=' .machine power9
4466 gcc_GAS_CHECK_FEATURE([power9 support],
4467 gcc_cv_as_powerpc_power9, [2,19,2], -a32,
4469 [AC_DEFINE(HAVE_AS_POWER9, 1,
4470 [Define if your assembler supports POWER9 instructions.])])
4473 *-*-aix*) conftest_s=' .csect .text[[PR]]
4475 *) conftest_s=' .text
4479 gcc_GAS_CHECK_FEATURE([lwsync support],
4480 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
4482 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
4483 [Define if your assembler supports LWSYNC instructions.])])
4486 *-*-aix*) conftest_s=' .machine "476"
4489 *) conftest_s=' .machine "476"
4494 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
4495 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
4497 [AC_DEFINE(HAVE_AS_DCI, 1,
4498 [Define if your assembler supports the DCI/ICI instructions.])])
4500 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4501 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
4502 [.gnu_attribute 4,1],,
4503 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4504 [Define if your assembler supports .gnu_attribute.])])
4506 gcc_GAS_CHECK_FEATURE([tls marker support],
4507 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
4508 [ bl __tls_get_addr(x@tlsgd)],,
4509 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
4510 [Define if your assembler supports arg info for __tls_get_addr.])])
4512 gcc_GAS_CHECK_FEATURE([prologue entry point marker support],
4513 gcc_cv_as_powerpc_entry_markers, [2,26,0],-a64 --fatal-warnings,
4514 [ .reloc .,R_PPC64_ENTRY; nop],,
4515 [AC_DEFINE(HAVE_AS_ENTRY_MARKERS, 1,
4516 [Define if your assembler supports the R_PPC64_ENTRY relocation.])])
4520 gcc_GAS_CHECK_FEATURE([AIX .ref support],
4521 gcc_cv_as_aix_ref, [2,21,0],,
4522 [ .csect stuff[[rw]]
4528 [AC_DEFINE(HAVE_AS_REF, 1,
4529 [Define if your assembler supports .ref])])
4531 gcc_GAS_CHECK_FEATURE([AIX DWARF location lists section support],
4532 gcc_cv_as_aix_dwloc, [2,21,0],,
4537 [AC_DEFINE(HAVE_XCOFF_DWARF_EXTRAS, 1,
4538 [Define if your assembler supports AIX debug frame section label reference.])])
4544 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4545 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
4546 [ lw $4,%gp_rel(foo)($4)],,
4547 [if test x$target_cpu_default = x
4548 then target_cpu_default=MASK_EXPLICIT_RELOCS
4549 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
4552 gcc_GAS_CHECK_FEATURE([-mno-shared support],
4553 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
4554 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
4555 [Define if the assembler understands -mno-shared.])])
4557 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4558 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
4559 [.gnu_attribute 4,1],,
4560 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4561 [Define if your assembler supports .gnu_attribute.])])
4563 gcc_GAS_CHECK_FEATURE([.module support],
4564 gcc_cv_as_mips_dot_module,,[-32],
4567 [AC_DEFINE(HAVE_AS_DOT_MODULE, 1,
4568 [Define if your assembler supports .module.])])
4569 if test x$gcc_cv_as_mips_dot_module = xno \
4570 && test x$with_fp_32 != x; then
4572 [Requesting --with-fp-32= requires assembler support for .module.])
4575 gcc_GAS_CHECK_FEATURE([.micromips support],
4576 gcc_cv_as_micromips_support,,[--fatal-warnings],
4578 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
4579 [Define if your assembler supports the .set micromips directive])])
4581 gcc_GAS_CHECK_FEATURE([.dtprelword support],
4582 gcc_cv_as_mips_dtprelword, [2,18,0],,
4583 [.section .tdata,"awT",@progbits
4587 .dtprelword x+0x8000],,
4588 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
4589 [Define if your assembler supports .dtprelword.])])
4591 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
4592 gcc_cv_as_mips_dspr1_mult,,,
4602 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
4603 [Define if your assembler supports DSPR1 mult.])])
4605 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
4606 gcc_cv_as_ld_jalr_reloc=no
4607 if test $gcc_cv_as_mips_explicit_relocs = yes; then
4608 if test $in_tree_ld = yes ; then
4609 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
4610 && test $in_tree_ld_is_elf = yes; then
4611 gcc_cv_as_ld_jalr_reloc=yes
4613 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4614 echo ' .ent x' > conftest.s
4615 echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s
4616 echo ' lw $25,%call16(y)($28)' >> conftest.s
4617 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
4618 echo '1: jalr $25' >> conftest.s
4619 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
4620 echo '1: jalr $25' >> conftest.s
4621 echo ' .end x' >> conftest.s
4622 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4623 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4624 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4625 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4626 gcc_cv_as_ld_jalr_reloc=yes
4632 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4633 if test x$target_cpu_default = x; then
4634 target_cpu_default=MASK_RELAX_PIC_CALLS
4636 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4639 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4641 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4642 [gcc_cv_ld_mips_personality_relaxation],
4643 [gcc_cv_ld_mips_personality_relaxation=no
4644 if test $in_tree_ld = yes ; then
4645 if test "$gcc_cv_gld_major_version" -eq 2 \
4646 -a "$gcc_cv_gld_minor_version" -ge 21 \
4647 -o "$gcc_cv_gld_major_version" -gt 2; then
4648 gcc_cv_ld_mips_personality_relaxation=yes
4650 elif test x$gcc_cv_as != x \
4651 -a x$gcc_cv_ld != x \
4652 -a x$gcc_cv_readelf != x ; then
4653 cat > conftest.s <<EOF
4655 .cfi_personality 0x80,indirect_ptr
4662 .section .data,"aw",@progbits
4666 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4667 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4668 if $gcc_cv_readelf -d conftest 2>&1 \
4669 | grep TEXTREL > /dev/null 2>&1; then
4671 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4672 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4675 gcc_cv_ld_mips_personality_relaxation=yes
4679 rm -f conftest.s conftest.o conftest])
4680 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4681 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4682 [Define if your linker can relax absolute .eh_frame personality
4683 pointers into PC-relative form.])
4686 gcc_GAS_CHECK_FEATURE([-mnan= support],
4687 gcc_cv_as_mips_nan,,
4689 [AC_DEFINE(HAVE_AS_NAN, 1,
4690 [Define if the assembler understands -mnan=.])])
4691 if test x$gcc_cv_as_mips_nan = xno \
4692 && test x$with_nan != x; then
4694 [Requesting --with-nan= requires assembler support for -mnan=])
4698 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4699 gcc_cv_as_s390_gnu_attribute, [2,18,0],,
4700 [.gnu_attribute 8,1],,
4701 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4702 [Define if your assembler supports .gnu_attribute.])])
4703 gcc_GAS_CHECK_FEATURE([.machine and .machinemode support],
4704 gcc_cv_as_s390_machine_machinemode, [2,24,0],,
4709 [AC_DEFINE(HAVE_AS_MACHINE_MACHINEMODE, 1,
4710 [Define if your assembler supports .machine and .machinemode.])])
4711 gcc_GAS_CHECK_FEATURE([architecture modifiers support],
4712 gcc_cv_as_s390_architecture_modifiers, [2,26,0],,
4713 [ .machine z13+vx ],,
4714 [AC_DEFINE(HAVE_AS_ARCHITECTURE_MODIFIERS, 1,
4715 [Define if your assembler supports architecture modifiers.])])
4719 # Mips and HP-UX need the GNU assembler.
4720 # Linux on IA64 might be able to use the Intel assembler.
4723 mips*-*-* | *-*-hpux* )
4724 if test x$gas_flag = xyes \
4725 || test x"$host" != x"$build" \
4726 || test ! -x "$gcc_cv_as" \
4727 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4730 echo "*** This configuration requires the GNU assembler" >&2
4736 # ??? Not all targets support dwarf2 debug_line, even within a version
4737 # of gas. Moreover, we need to emit a valid instruction to trigger any
4738 # info to the output file. So, as supported targets are added to gas 2.11,
4739 # add some instruction here to (also) show we expect this might work.
4740 # ??? Once 2.11 is released, probably need to add first known working
4741 # version to the per-target configury.
4743 aarch64 | alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze \
4744 | mips | nios2 | pa | rs6000 | score | sparc | spu | tilegx | tilepro \
4745 | visium | xstormy16 | xtensa)
4755 if test x"$insn" != x; then
4757 .file 1 \"conftest.s\"
4760 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4761 gcc_cv_as_dwarf2_debug_line,
4762 [elf,2,11,0],, [$conftest_s],
4763 [if test x$gcc_cv_objdump != x \
4764 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4765 | grep debug_line > /dev/null 2>&1; then
4766 gcc_cv_as_dwarf2_debug_line=yes
4769 # The .debug_line file table must be in the exact order that
4770 # we specified the files, since these indices are also used
4771 # by DW_AT_decl_file. Approximate this test by testing if
4772 # the assembler bitches if the same index is assigned twice.
4773 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4774 gcc_cv_as_dwarf2_file_buggy,,,
4778 if test $gcc_cv_as_dwarf2_debug_line = yes \
4779 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4780 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4781 [Define if your assembler supports dwarf2 .file/.loc directives,
4782 and preserves file table indices exactly as given.])
4785 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4786 gcc_cv_as_gdwarf2_flag,
4787 [elf,2,11,0], [--gdwarf2], [$insn],,
4788 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4789 [Define if your assembler supports the --gdwarf2 option.])])
4791 gcc_GAS_CHECK_FEATURE([--gstabs option],
4792 gcc_cv_as_gstabs_flag,
4793 [elf,2,11,0], [--gstabs], [$insn],,
4794 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4795 [Define if your assembler supports the --gstabs option.])])
4797 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4798 gcc_cv_as_debug_prefix_map_flag,
4799 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4800 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4801 [Define if your assembler supports the --debug-prefix-map option.])])
4804 gcc_GAS_CHECK_FEATURE([compressed debug sections],
4805 gcc_cv_as_compress_debug,,,,
4806 [# gas compiled without zlib cannot compress debug sections and warns
4807 # about it, but still exits successfully. So check for this, too.
4808 if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null
4810 gcc_cv_as_compress_debug=0
4811 # Since binutils 2.26, gas supports --compress-debug-sections=type,
4812 # defaulting to the ELF gABI format.
4813 elif $gcc_cv_as --compress-debug-sections=zlib-gnu -o conftest.o conftest.s > /dev/null 2>&1
4815 gcc_cv_as_compress_debug=2
4816 gcc_cv_as_compress_debug_option="--compress-debug-sections"
4817 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
4818 # Before binutils 2.26, gas only supported --compress-debug-options and
4819 # emitted the traditional GNU format.
4820 elif $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s > /dev/null 2>&1
4822 gcc_cv_as_compress_debug=1
4823 gcc_cv_as_compress_debug_option="--compress-debug-sections"
4824 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
4826 gcc_cv_as_compress_debug=0
4828 AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug,
4829 [Define to the level of your assembler's compressed debug section support.])
4830 AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option",
4831 [Define to the assembler option to enable compressed debug sections.])
4832 AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option",
4833 [Define to the assembler option to disable compressed debug sections.])
4835 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4838 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4839 [Define if your assembler supports .lcomm with an alignment field.])])
4841 if test x$with_sysroot = x && test x$host = x$target \
4842 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4843 && test "$prefix" != "NONE"; then
4844 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4845 [Define to PREFIX/include if cpp should also search that directory.])
4848 # Determine the version of glibc, if any, used on the target.
4849 AC_MSG_CHECKING([for target glibc version])
4850 AC_ARG_WITH([glibc-version],
4851 [AS_HELP_STRING([--with-glibc-version=M.N],
4852 [assume GCC used with glibc version M.N or later])], [
4853 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
4854 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
4855 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
4857 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
4859 glibc_version_major=0
4860 glibc_version_minor=0
4861 [if test -f $target_header_dir/features.h \
4862 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
4863 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
4864 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
4865 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
4867 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
4868 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MAJOR], [$glibc_version_major],
4869 [GNU C Library major version number used on the target, or 0.])
4870 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MINOR], [$glibc_version_minor],
4871 [GNU C Library minor version number used on the target, or 0.])
4873 AC_ARG_ENABLE(gnu-unique-object,
4874 [AS_HELP_STRING([--enable-gnu-unique-object],
4875 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4876 [case $enable_gnu_unique_object in
4878 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4879 Valid choices are 'yes' and 'no'.]) ;;
4881 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4883 [.type foo, '$target_type_format_char'gnu_unique_object],,
4884 # We need to unquote above to to use the definition from config.gcc.
4885 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4886 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
4888 if test x$enable_gnu_unique_object = xyes; then
4889 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4890 [Define if your assembler supports @gnu_unique_object.])
4893 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4894 [gcc_cv_as_line_zero],
4895 [gcc_cv_as_line_zero=no
4896 if test $in_tree_gas = yes; then
4897 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4898 elif test "x$gcc_cv_as" != x; then
4899 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4900 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4901 test "x`cat conftest.out`" = x
4903 gcc_cv_as_line_zero=yes
4905 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4906 cat conftest.s >&AS_MESSAGE_LOG_FD
4907 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4908 cat conftest.out >&AS_MESSAGE_LOG_FD
4910 rm -f conftest.o conftest.s conftest.out
4912 if test "x$gcc_cv_as_line_zero" = xyes; then
4913 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4914 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4917 AC_MSG_CHECKING(support for thin archives)
4918 thin_archive_support=no
4919 echo 'int main (void) { return 0; }' > conftest.c
4920 if ($AR --version | sed 1q | grep "GNU ar" \
4921 && $CC $CFLAGS -c conftest.c \
4922 && $AR rcT conftest.a conftest.o \
4923 && $CC $CFLAGS $LDFLAGS -o conftest conftest.a) >/dev/null 2>&1; then
4924 thin_archive_support=yes
4926 rm -f conftest.c conftest.o conftest.a conftest
4927 AC_MSG_RESULT($thin_archive_support)
4928 AC_SUBST(thin_archive_support)
4930 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4931 gcc_cv_ld_eh_frame_hdr=no
4932 if test $in_tree_ld = yes ; then
4933 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4934 && test $in_tree_ld_is_elf = yes; then
4935 gcc_cv_ld_eh_frame_hdr=yes
4937 elif test x$gcc_cv_ld != x; then
4938 if echo "$ld_ver" | grep GNU > /dev/null; then
4939 # Check if linker supports --eh-frame-hdr option
4940 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4941 gcc_cv_ld_eh_frame_hdr=yes
4946 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4947 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4948 gcc_cv_ld_eh_frame_hdr=yes
4954 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4955 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4956 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4957 [Define if your linker supports .eh_frame_hdr.])
4959 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4961 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
4962 gcc_cv_ld_eh_frame_ciev3=no
4963 if test $in_tree_ld = yes ; then
4964 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4965 && test $in_tree_ld_is_elf = yes; then
4966 gcc_cv_ld_eh_frame_ciev3=yes
4968 elif test x$gcc_cv_ld != x; then
4969 if echo "$ld_ver" | grep GNU > /dev/null; then
4970 gcc_cv_ld_eh_frame_ciev3=yes
4971 if test 0"$ld_date" -lt 20040513; then
4972 if test -n "$ld_date"; then
4973 # If there was date string, but was earlier than 2004-05-13, fail
4974 gcc_cv_ld_eh_frame_ciev3=no
4975 elif test "$ld_vers_major" -lt 2; then
4976 gcc_cv_ld_eh_frame_ciev3=no
4977 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
4978 gcc_cv_ld_eh_frame_ciev3=no
4984 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
4985 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
4986 gcc_cv_ld_eh_frame_ciev3=yes
4992 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
4993 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
4994 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
4995 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
4997 AC_MSG_CHECKING(linker position independent executable support)
4999 if test $in_tree_ld = yes ; then
5001 # Full PIE support on Solaris was only introduced in gld 2.26.
5002 *-*-solaris2*) gcc_gld_pie_min_version=26 ;;
5003 *) gcc_gld_pie_min_version=15 ;;
5005 if test "$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 \
5006 && test $in_tree_ld_is_elf = yes; then
5009 elif test x$gcc_cv_ld != x; then
5010 # Check if linker supports -pie option
5011 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
5015 if echo "$ld_ver" | grep GNU > /dev/null \
5016 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
5023 *-*-solaris2.1[[1-9]]*)
5024 # Solaris 11.x and Solaris 12 added PIE support.
5025 if $gcc_cv_ld -z help 2>&1 | grep -- type.*pie > /dev/null; then
5032 if test x"$gcc_cv_ld_pie" = xyes; then
5033 AC_DEFINE(HAVE_LD_PIE, 1,
5034 [Define if your linker supports PIE option.])
5036 AC_MSG_RESULT($gcc_cv_ld_pie)
5038 AC_MSG_CHECKING(linker PIE support with copy reloc)
5039 gcc_cv_ld_pie_copyreloc=no
5040 if test $gcc_cv_ld_pie = yes ; then
5041 if test $in_tree_ld = yes ; then
5042 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
5043 gcc_cv_ld_pie_copyreloc=yes
5045 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5046 # Check if linker supports -pie option with copy reloc
5048 i?86-*-linux* | x86_64-*-linux*)
5049 cat > conftest1.s <<EOF
5052 .type a_glob, @object
5057 cat > conftest2.s <<EOF
5060 .type main, @function
5062 movl %eax, a_glob(%rip)
5065 .section .data.rel,"aw",@progbits
5070 if $gcc_cv_as --64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5071 && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \
5072 && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5073 && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then
5074 gcc_cv_ld_pie_copyreloc=yes
5076 rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s
5081 AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC,
5082 [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`],
5083 [Define 0/1 if your linker supports -pie option with copy reloc.])
5084 AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc)
5086 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
5087 gcc_cv_ld_eh_gc_sections=no
5088 if test $in_tree_ld = yes ; then
5089 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
5090 && test $in_tree_ld_is_elf = yes; then
5091 gcc_cv_ld_eh_gc_sections=yes
5093 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
5094 cat > conftest.s <<EOF
5097 .type _start, @function
5100 .size _start, .-_start
5101 .section .text.foo,"ax",@progbits
5102 .type foo, @function
5106 .section .gcc_except_table.foo,"a",@progbits
5109 .section .eh_frame,"a",@progbits
5112 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5113 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5114 | grep "gc-sections option ignored" > /dev/null; then
5115 gcc_cv_ld_eh_gc_sections=no
5116 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5117 | grep gcc_except_table > /dev/null; then
5118 gcc_cv_ld_eh_gc_sections=yes
5119 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
5120 if test x$gcc_cv_as_comdat_group != xyes; then
5121 gcc_cv_ld_eh_gc_sections=no
5122 cat > conftest.s <<EOF
5125 .type _start, @function
5128 .size _start, .-_start
5129 .section .gnu.linkonce.t.foo,"ax",@progbits
5130 .type foo, @function
5134 .section .gcc_except_table.foo,"a",@progbits
5137 .section .eh_frame,"a",@progbits
5140 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5141 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5142 | grep "gc-sections option ignored" > /dev/null; then
5143 gcc_cv_ld_eh_gc_sections=no
5144 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5145 | grep gcc_except_table > /dev/null; then
5146 gcc_cv_ld_eh_gc_sections=yes
5152 rm -f conftest.s conftest.o conftest
5156 # ??? This apparently exposes a binutils bug with PC-relative relocations.
5157 gcc_cv_ld_eh_gc_sections=no
5160 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
5161 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
5162 [Define if your linker supports garbage collection of
5163 sections in presence of EH frames.])
5165 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
5167 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
5168 gcc_cv_ld_eh_gc_sections_bug=no
5169 if test $in_tree_ld = yes ; then
5170 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
5171 && test $in_tree_ld_is_elf = yes; then
5172 gcc_cv_ld_eh_gc_sections_bug=yes
5174 elif test x$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
5175 gcc_cv_ld_eh_gc_sections_bug=yes
5176 cat > conftest.s <<EOF
5179 .type _start, @function
5182 .size _start, .-_start
5183 .section .text.startup.foo,"ax",@progbits
5184 .type foo, @function
5188 .section .gcc_except_table.foo,"a",@progbits
5191 .section .eh_frame,"a",@progbits
5194 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5195 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5196 | grep "gc-sections option ignored" > /dev/null; then
5198 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5199 | grep gcc_except_table > /dev/null; then
5200 gcc_cv_ld_eh_gc_sections_bug=no
5203 rm -f conftest.s conftest.o conftest
5205 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
5206 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
5207 [Define if your linker has buggy garbage collection of
5208 sections support when .text.startup.foo like sections are used.])
5210 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
5212 AC_MSG_CHECKING(linker for compressed debug sections)
5213 # gold/gld support compressed debug sections since binutils 2.19/2.21
5214 # In binutils 2.26, gld gained support for the ELF gABI format.
5215 if test $in_tree_ld = yes ; then
5216 gcc_cv_ld_compress_debug=0
5217 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 19 -o "$gcc_cv_gld_major_version" -gt 2 \
5218 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = yes; then
5219 gcc_cv_ld_compress_debug=2
5220 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5221 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 26 -o "$gcc_cv_gld_major_version" -gt 2 \
5222 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = no; then
5223 gcc_cv_ld_compress_debug=3
5224 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5225 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2 \
5226 && test $in_tree_ld_is_elf = yes; then
5227 gcc_cv_ld_compress_debug=1
5229 elif echo "$ld_ver" | grep GNU > /dev/null; then
5230 if test "$ld_vers_major" -lt 2 \
5231 || test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 21; then
5232 gcc_cv_ld_compress_debug=0
5233 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
5234 gcc_cv_ld_compress_debug=1
5236 gcc_cv_ld_compress_debug=3
5237 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5239 if test $ld_is_gold = yes; then
5240 gcc_cv_ld_compress_debug=2
5241 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5247 # Introduced in Solaris 11.2.
5248 if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then
5249 gcc_cv_ld_compress_debug=3
5250 gcc_cv_ld_compress_debug_option="-z compress-sections"
5252 gcc_cv_ld_compress_debug=0
5256 # Assume linkers other than GNU ld don't support compessed debug
5258 gcc_cv_ld_compress_debug=0
5263 AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug,
5264 [Define to the level of your linker's compressed debug section support.])
5265 AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option",
5266 [Define to the linker option to enable compressed debug sections.])
5267 AC_MSG_RESULT($gcc_cv_ld_compress_debug)
5269 if test x"$ld64_flag" = x"yes"; then
5271 # Set defaults for possibly untestable items.
5272 gcc_cv_ld64_export_dynamic=0
5274 if test "$build" = "$host"; then
5280 # On Darwin, because of FAT library support, it is often possible to execute
5281 # exes from compatible archs even when the host differs from the build system.
5282 case "$build","$host" in
5283 x86_64-*-darwin*,i?86-*-darwin* | powerpc64*-*-darwin*,powerpc*-*-darwin*)
5288 # If the configurer specified a minimum ld64 version to be supported, then use
5289 # that to determine feature support.
5290 if test x"${gcc_cv_ld64_version}" != x; then
5291 AC_MSG_CHECKING(ld64 specified version)
5292 gcc_cv_ld64_major=`echo "$gcc_cv_ld64_version" | sed -e 's/\..*//'`
5293 AC_MSG_RESULT($gcc_cv_ld64_major)
5294 if test "$gcc_cv_ld64_major" -ge 236; then
5295 gcc_cv_ld64_export_dynamic=1
5297 elif test -x "$gcc_cv_ld" -a "$darwin_try_test" -eq 1; then
5298 # If the version was not specified, try to find it.
5299 AC_MSG_CHECKING(linker version)
5300 if test x"${gcc_cv_ld64_version}" = x; then
5301 gcc_cv_ld64_version=`$gcc_cv_ld -v 2>&1 | grep ld64 | sed s/.*ld64-// | awk '{print $1}'`
5303 AC_MSG_RESULT($gcc_cv_ld64_version)
5305 AC_MSG_CHECKING(linker for -export_dynamic support)
5306 gcc_cv_ld64_export_dynamic=1
5307 if $gcc_cv_ld -export_dynamic < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then
5308 gcc_cv_ld64_export_dynamic=0
5310 AC_MSG_RESULT($gcc_cv_ld64_export_dynamic)
5313 if test x"${gcc_cv_ld64_version}" != x; then
5314 AC_DEFINE_UNQUOTED(LD64_VERSION, "${gcc_cv_ld64_version}",
5315 [Define to ld64 version.])
5318 AC_DEFINE_UNQUOTED(LD64_HAS_EXPORT_DYNAMIC, $gcc_cv_ld64_export_dynamic,
5319 [Define to 1 if ld64 supports '-export_dynamic'.])
5326 AC_CACHE_CHECK(linker --as-needed support,
5327 gcc_cv_ld_as_needed,
5328 [gcc_cv_ld_as_needed=no
5329 gcc_cv_ld_as_needed_option='--as-needed'
5330 gcc_cv_ld_no_as_needed_option='--no-as-needed'
5331 if test $in_tree_ld = yes ; then
5332 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5333 && test $in_tree_ld_is_elf = yes; then
5334 gcc_cv_ld_as_needed=yes
5336 elif test x$gcc_cv_ld != x; then
5337 # Check if linker supports --as-needed and --no-as-needed options
5338 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
5339 gcc_cv_ld_as_needed=yes
5342 # Solaris 2 ld always supports -z ignore/-z record.
5344 gcc_cv_ld_as_needed=yes
5345 gcc_cv_ld_as_needed_option="-z ignore"
5346 gcc_cv_ld_no_as_needed_option="-z record"
5351 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
5352 # dl_iterate_phdr, i.e. since Solaris 11.
5354 *-*-solaris2.1[[1-9]]*)
5356 i?86-*-* | x86_64-*-*)
5357 if echo "$ld_ver" | grep GNU > /dev/null; then
5358 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
5359 gcc_cv_ld_as_needed=no
5365 gcc_cv_ld_as_needed=no
5369 if test x"$gcc_cv_ld_as_needed" = xyes; then
5370 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
5371 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
5372 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
5373 [Define to the linker option to ignore unused dependencies.])
5374 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
5375 [Define to the linker option to keep unused dependencies.])
5378 AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities)
5379 saved_LDFLAGS="$LDFLAGS"
5380 for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do
5381 LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map"
5382 AC_LINK_IFELSE([int main(void) {return 0;}],
5383 [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no])
5385 LDFLAGS="$saved_LDFLAGS"
5386 if test "x$gcc_cv_ld_clearcap" = xyes; then
5387 AC_DEFINE([HAVE_LD_CLEARCAP], 1,
5388 [Define if the linker supports clearing hardware capabilities via mapfile.])
5389 AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map])
5391 AC_MSG_RESULT($gcc_cv_ld_clearcap)
5397 emul_name="-melf32lppc"
5400 emul_name="-melf32ppc"
5403 AC_CACHE_CHECK(linker .gnu.attributes long double support,
5405 [gcc_cv_ld_ppc_attr=no
5406 if test x"$ld_is_gold" = xyes; then
5407 gcc_cv_ld_ppc_attr=yes
5408 elif test $in_tree_ld = yes ; then
5409 if test "$gcc_cv_gld_major_version" -eq 2 \
5410 -a "$gcc_cv_gld_minor_version" -ge 28 \
5411 -o "$gcc_cv_gld_major_version" -gt 2; then
5412 gcc_cv_ld_ppc_attr=yes
5414 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5415 # check that merging the long double .gnu_attribute doesn't warn
5416 cat > conftest1.s <<EOF
5419 cat > conftest2.s <<EOF
5422 if $gcc_cv_as -a32 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5423 && $gcc_cv_as -a32 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5424 && $gcc_cv_ld $emul_name -r -o conftest.o conftest1.o conftest2.o > /dev/null 2> conftest.err \
5425 && test ! -s conftest.err; then
5426 gcc_cv_ld_ppc_attr=yes
5428 rm -f conftest.err conftest.o conftest1.o conftest2.o conftest1.s conftest2.s
5431 if test x$gcc_cv_ld_ppc_attr = xyes; then
5432 AC_DEFINE(HAVE_LD_PPC_GNU_ATTR_LONG_DOUBLE, 1,
5433 [Define if your PowerPC linker has .gnu.attributes long double support.])
5438 case "$target:$tm_file" in
5439 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
5442 emul_name="-melf64lppc"
5445 emul_name="-melf64ppc"
5448 emul_name="-melf64ppc_fbsd"
5451 AC_CACHE_CHECK(linker support for omitting dot symbols,
5452 gcc_cv_ld_no_dot_syms,
5453 [gcc_cv_ld_no_dot_syms=no
5454 if test x"$ld_is_gold" = xyes; then
5455 gcc_cv_ld_no_dot_syms=yes
5456 elif test $in_tree_ld = yes ; then
5457 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
5458 gcc_cv_ld_no_dot_syms=yes
5460 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5461 cat > conftest1.s <<EOF
5465 cat > conftest2.s <<EOF
5466 .section ".opd","aw"
5471 .quad .LEfoo,.TOC.@tocbase,0
5477 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5478 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5479 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
5480 gcc_cv_ld_no_dot_syms=yes
5482 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
5485 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
5486 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
5487 [Define if your PowerPC64 linker only needs function descriptor syms.])
5490 AC_CACHE_CHECK(linker large toc support,
5491 gcc_cv_ld_large_toc,
5492 [gcc_cv_ld_large_toc=no
5493 if test x"$ld_is_gold" = xyes; then
5494 gcc_cv_ld_large_toc=yes
5495 elif test $in_tree_ld = yes ; then
5496 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
5497 gcc_cv_ld_large_toc=yes
5499 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5500 cat > conftest.s <<EOF
5501 .section ".tbss","awT",@nobits
5507 addis 9,13,ie0@got@tprel@ha
5508 ld 9,ie0@got@tprel@l(9)
5510 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5511 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
5512 gcc_cv_ld_large_toc=yes
5514 rm -f conftest conftest.o conftest.s
5517 if test x"$gcc_cv_ld_large_toc" = xyes; then
5518 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5519 [Define if your PowerPC64 linker supports a large TOC.])
5522 AC_CACHE_CHECK(linker toc pointer alignment,
5523 gcc_cv_ld_toc_align,
5524 [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then
5525 cat > conftest.s <<EOF
5530 .section .data.rel.ro,"aw",@progbits
5535 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5536 && $gcc_cv_ld $emul_name -z norelro -o conftest conftest.o > /dev/null 2>&1; then
5537 gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'`
5539 rm -f conftest conftest.o conftest.s
5542 if test -n "$gcc_cv_ld_toc_align" && test $gcc_cv_ld_toc_align -gt 8; then
5543 AC_DEFINE_UNQUOTED(POWERPC64_TOC_POINTER_ALIGNMENT, $gcc_cv_ld_toc_align,
5544 [Define to .TOC. alignment forced by your linker.])
5551 AC_CACHE_CHECK(linker large toc support,
5552 gcc_cv_ld_large_toc,
5553 [gcc_cv_ld_large_toc=no
5554 if test x$gcc_cv_as != x ; then
5555 cat > conftest.s <<EOF
5565 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
5566 gcc_cv_ld_large_toc=yes
5568 rm -f conftest conftest.o conftest.s
5571 if test x"$gcc_cv_ld_large_toc" = xyes; then
5572 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5573 [Define if your PowerPC64 linker supports a large TOC.])
5578 AC_CACHE_CHECK(linker --build-id support,
5580 [gcc_cv_ld_buildid=no
5581 if test $in_tree_ld = yes ; then
5582 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5583 "$gcc_cv_gld_minor_version" -ge 18 -o \
5584 "$gcc_cv_gld_major_version" -gt 2 \
5585 && test $in_tree_ld_is_elf = yes; then
5586 gcc_cv_ld_buildid=yes
5588 elif test x$gcc_cv_ld != x; then
5589 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
5590 gcc_cv_ld_buildid=yes
5593 if test x"$gcc_cv_ld_buildid" = xyes; then
5594 AC_DEFINE(HAVE_LD_BUILDID, 1,
5595 [Define if your linker supports --build-id.])
5598 AC_ARG_ENABLE(linker-build-id,
5599 [AS_HELP_STRING([--enable-linker-build-id],
5600 [compiler will always pass --build-id to linker])],
5602 enable_linker_build_id=no)
5604 if test x"$enable_linker_build_id" = xyes; then
5605 if test x"$gcc_cv_ld_buildid" = xyes; then
5606 AC_DEFINE(ENABLE_LD_BUILDID, 1,
5607 [Define if gcc should always pass --build-id to linker.])
5609 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
5613 # In binutils 2.21, GNU ld gained support for new emulations fully
5614 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
5615 AC_CACHE_CHECK(linker *_sol2 emulation support,
5616 gcc_cv_ld_sol2_emulation,
5617 [gcc_cv_ld_sol2_emulation=no
5618 if test $in_tree_ld = yes ; then
5619 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5620 "$gcc_cv_gld_minor_version" -ge 21 -o \
5621 "$gcc_cv_gld_major_version" -gt 2 \
5622 && test $in_tree_ld_is_elf = yes; then
5623 gcc_cv_ld_sol2_emulation=yes
5625 elif test x$gcc_cv_ld != x; then
5626 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
5627 grep _sol2 > /dev/null; then
5628 gcc_cv_ld_sol2_emulation=yes
5631 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
5632 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
5633 [Define if your linker supports the *_sol2 emulations.])
5636 AC_CACHE_CHECK(linker --sysroot support,
5638 [gcc_cv_ld_sysroot=no
5639 if test $in_tree_ld = yes ; then
5640 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
5641 gcc_cv_ld_sysroot=yes
5643 elif test x$gcc_cv_ld != x; then
5644 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
5645 gcc_cv_ld_sysroot=yes
5648 if test x"$gcc_cv_ld_sysroot" = xyes; then
5649 AC_DEFINE(HAVE_LD_SYSROOT, 1,
5650 [Define if your linker supports --sysroot.])
5655 # Check for system-provided CRTs on Solaris 11.x and Solaris 12.
5656 AC_CACHE_CHECK([system-provided CRTs on Solaris],
5657 gcc_cv_solaris_crts,
5658 [gcc_cv_solaris_crts=no
5659 if test x$host != x$target; then
5660 if test "x$with_sysroot" = xyes; then
5661 target_sysroot="${test_exec_prefix}/${target_noncanonical}/sys-root"
5663 target_sysroot="${with_sysroot}"
5666 target_libdir="$target_sysroot/usr/lib"
5667 # At the time they were added, gcrt1.o became a symlink for backwards
5668 # compatibility on x86, while crt1.o was added on sparc, so check for that.
5670 i?86-*-solaris2* | x86_64-*-solaris2*)
5671 if test -h "$target_libdir/gcrt1.o"; then gcc_cv_solaris_crts=yes; fi
5674 if test -f "$target_libdir/crt1.o"; then gcc_cv_solaris_crts=yes; fi
5679 if test x$gcc_cv_solaris_crts = xyes; then
5680 AC_DEFINE(HAVE_SOLARIS_CRTS, 1,
5681 [Define if the system-provided CRTs are present on Solaris.])
5684 # Test for stack protector support in target C library.
5685 AC_CACHE_CHECK(__stack_chk_fail in target C library,
5686 gcc_cv_libc_provides_ssp,
5687 [gcc_cv_libc_provides_ssp=no
5690 # All versions of musl provide stack protector
5691 gcc_cv_libc_provides_ssp=yes;;
5692 *-*-linux* | *-*-kfreebsd*-gnu)
5693 # glibc 2.4 and later provides __stack_chk_fail and
5694 # either __stack_chk_guard, or TLS access to stack guard canary.
5695 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
5696 [if test -f $target_header_dir/features.h \
5697 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
5698 $target_header_dir/features.h > /dev/null; then
5699 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
5700 $target_header_dir/features.h > /dev/null && \
5701 test -f $target_header_dir/bits/uClibc_config.h && \
5702 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
5703 $target_header_dir/bits/uClibc_config.h > /dev/null; then
5704 gcc_cv_libc_provides_ssp=yes
5706 # all versions of Bionic support stack protector
5707 elif test -f $target_header_dir/sys/cdefs.h \
5708 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
5709 $target_header_dir/sys/cdefs.h > /dev/null; then
5710 gcc_cv_libc_provides_ssp=yes
5714 # Avoid complicated tests (see
5715 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
5716 # simply assert that glibc does provide this, which is true for all
5717 # realistically usable GNU/Hurd configurations.
5718 # All supported versions of musl provide it as well
5719 gcc_cv_libc_provides_ssp=yes;;
5720 *-*-darwin* | *-*-freebsd* | *-*-netbsd*)
5721 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
5722 [echo "no __stack_chk_fail on this target"])
5724 *) gcc_cv_libc_provides_ssp=no ;;
5727 if test x$gcc_cv_libc_provides_ssp = xyes; then
5728 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
5729 [Define if your target C library provides stack protector support])
5732 # Check whether --enable-default-ssp was given.
5733 AC_ARG_ENABLE(default-ssp,
5734 [AS_HELP_STRING([--enable-default-ssp],
5735 [enable Stack Smashing Protection as default])],[
5736 if test x$gcc_cv_libc_provides_ssp = xyes; then
5738 ia64*-*-*) enable_default_ssp=no ;;
5739 *) enable_default_ssp=$enableval ;;
5742 enable_default_ssp=no
5744 enable_default_ssp=no)
5745 if test x$enable_default_ssp = xyes ; then
5746 AC_DEFINE(ENABLE_DEFAULT_SSP, 1,
5747 [Define if your target supports default stack protector and it is enabled.])
5749 AC_SUBST([enable_default_ssp])
5751 # Test for <sys/sdt.h> on the target.
5752 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
5753 AC_MSG_CHECKING(sys/sdt.h in the target C library)
5755 if test -f $target_header_dir/sys/sdt.h; then
5757 AC_DEFINE(HAVE_SYS_SDT_H, 1,
5758 [Define if your target C library provides sys/sdt.h])
5760 AC_MSG_RESULT($have_sys_sdt_h)
5762 # Check if TFmode long double should be used by default or not.
5763 # Some glibc targets used DFmode long double, but with glibc 2.4
5764 # and later they can use TFmode.
5766 powerpc*-*-linux* | \
5770 AC_ARG_WITH(long-double-128,
5771 [AS_HELP_STRING([--with-long-double-128],
5772 [use 128-bit long double by default])],
5773 gcc_cv_target_ldbl128="$with_long_double_128",
5774 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
5775 [gcc_cv_target_ldbl128=no
5776 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
5777 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
5778 && gcc_cv_target_ldbl128=yes
5782 if test x$gcc_cv_target_ldbl128 = xyes; then
5783 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
5784 [Define if TFmode long double should be the default])
5787 # Check if the target LIBC supports exporting the AT_PLATFORM and AT_HWCAP
5788 # values in the TCB. Currently, only GLIBC 2.23 and later support this.
5789 gcc_cv_libc_provides_hwcap_in_tcb=no
5792 GCC_GLIBC_VERSION_GTE_IFELSE([2], [23], [gcc_cv_libc_provides_hwcap_in_tcb=yes], )
5795 if test x$gcc_cv_libc_provides_hwcap_in_tcb = xyes; then
5796 AC_DEFINE(TARGET_LIBC_PROVIDES_HWCAP_IN_TCB, 1,
5797 [Define if your target C Library provides the AT_HWCAP value in the TCB])
5800 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
5801 gcc_cv_target_dl_iterate_phdr=unknown
5803 # Restrict to Solaris 11+. While most of the Solaris 11 linker changes
5804 # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in
5805 # libdl there, both complicating its use and breaking compatibility
5806 # between Solaris 10 updates.
5807 *-*-solaris2.1[[1-9]]*)
5808 # <link.h> needs both a dl_iterate_phdr declaration and support for
5809 # compilation with largefile support.
5810 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
5811 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
5812 gcc_cv_target_dl_iterate_phdr=yes
5814 gcc_cv_target_dl_iterate_phdr=no
5817 *-*-dragonfly* | *-*-freebsd*)
5818 if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then
5819 gcc_cv_target_dl_iterate_phdr=yes
5821 gcc_cv_target_dl_iterate_phdr=no
5825 gcc_cv_target_dl_iterate_phdr=yes
5828 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
5829 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
5830 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
5831 [Define if your target C library provides the `dl_iterate_phdr' function.])
5833 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
5835 # We no longer support different GC mechanisms. Emit an error if
5836 # the user configures with --with-gc.
5838 [AS_HELP_STRING([--with-gc={page,zone}],
5839 [this option is not supported anymore. It used to choose
5840 the garbage collection mechanism to use with the compiler])],
5841 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
5844 # Libraries to use on the host. This will normally be set by the top
5845 # level Makefile. Here we simply capture the value for our Makefile.
5846 if test -z "${HOST_LIBS+set}"; then
5851 # Use the system's zlib library.
5854 dnl Very limited version of automake's enable-maintainer-mode
5856 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
5857 dnl maintainer-mode is disabled by default
5858 AC_ARG_ENABLE(maintainer-mode,
5859 [AS_HELP_STRING([--enable-maintainer-mode],
5860 [enable make rules and dependencies not useful
5861 (and sometimes confusing) to the casual installer])],
5862 maintainer_mode=$enableval,
5865 AC_MSG_RESULT($maintainer_mode)
5867 if test "$maintainer_mode" = "yes"; then
5874 dnl Whether to prevent multiple front-ends from linking at the same time
5876 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
5877 AC_ARG_ENABLE(link-mutex,
5878 [AS_HELP_STRING([--enable-link-mutex],
5879 [avoid linking multiple front-ends at once to avoid thrashing
5880 on the build machine])],
5881 do_link_mutex=$enableval,
5883 AC_MSG_RESULT($do_link_mutex)
5885 if test "$do_link_mutex" = "yes"; then
5890 AC_SUBST(DO_LINK_MUTEX)
5896 # Make empty files to contain the specs and options for each language.
5897 # Then add #include lines to for a compiler that has specs and/or options.
5903 # These (without "all_") are set in each config-lang.in.
5904 # `language' must be a single word so is spelled singularly.
5907 all_outputs='Makefile'
5908 # List of language makefile fragments.
5910 # Additional files for gengtype
5911 all_gtfiles="$target_gtfiles"
5913 # These are the languages that are set in --enable-languages,
5914 # and are available in the GCC tree.
5915 all_selected_languages=
5917 # Add the language fragments.
5918 # Languages are added via two mechanisms. Some information must be
5919 # recorded in makefile variables, these are defined in config-lang.in.
5920 # We accumulate them and plug them into the main Makefile.
5921 # The other mechanism is a set of hooks for each of the main targets
5922 # like `clean', `install', etc.
5924 language_hooks="Make-hooks"
5926 for lang in ${srcdir}/*/config-lang.in
5929 test "$lang" = "${srcdir}/*/config-lang.in" && continue
5931 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
5932 if test "x$lang_alias" = x
5934 echo "$lang doesn't set \$language." 1>&2
5937 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
5938 subdirs="$subdirs $subdir"
5940 # $gcc_subdir is where the gcc integration files are to be found
5941 # for a language, both for internal compiler purposes (compiler
5942 # sources implementing front-end to GCC tree converters), and for
5943 # build infrastructure purposes (Make-lang.in, etc.)
5945 # This will be <subdir> (relative to $srcdir) if a line like
5946 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
5947 # is found in <langdir>/config-lang.in, and will remain <langdir>
5950 # Except for the language alias (fetched above), the regular
5951 # "config-lang.in" contents are always retrieved from $gcc_subdir,
5952 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
5953 # only this and the language alias.
5955 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
5956 if [ "$gcc_subdir" = "" ]; then
5957 gcc_subdir="$subdir"
5960 case ",$enable_languages," in
5962 all_selected_languages="$all_selected_languages $lang_alias"
5963 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
5964 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
5976 . ${srcdir}/$gcc_subdir/config-lang.in
5977 if test "x$language" = x
5979 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
5984 case ",$enable_languages," in
5987 for i in $subdir_requires; do
5988 test -f "${srcdir}/$i/config-lang.in" && continue
5996 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
5997 if test -f $srcdir/$gcc_subdir/lang.opt; then
5998 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
5999 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
6001 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
6002 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
6004 all_languages="$all_languages $language"
6005 all_compilers="$all_compilers $compilers"
6006 all_outputs="$all_outputs $outputs"
6007 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
6008 case ",$enable_languages," in
6010 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
6012 AC_SUBST(enable_lto)
6019 for language in $all_selected_languages
6021 check_languages="$check_languages check-$language"
6024 # We link each language in with a set of hooks, reached indirectly via
6025 # lang.${target}. Only do so for selected languages.
6029 target_list="all.cross start.encap rest.encap tags \
6030 install-common install-man install-info install-pdf install-html dvi \
6031 pdf html uninstall info man srcextra srcman srcinfo \
6032 mostlyclean clean distclean maintainer-clean install-plugin"
6034 for t in $target_list
6037 for lang in $all_selected_languages
6041 echo "lang.$t: $x" >> Make-hooks
6045 # Option include files
6048 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
6049 option_includes="option-includes.mk"
6050 AC_SUBST_FILE(option_includes)
6058 echo "dir ." > .gdbinit
6059 echo "dir ${srcdir}" >> .gdbinit
6060 if test x$gdb_needs_out_file_path = xyes
6062 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
6064 if test "x$subdirs" != x; then
6067 echo "dir ${srcdir}/$s" >> .gdbinit
6070 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
6071 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
6073 # Put a breakpoint on __asan_report_error to help with debugging buffer
6076 *-fsanitize=address*)
6077 echo "source ${srcdir}/gdbasan.in" >> .gdbinit
6081 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
6082 AC_SUBST(gcc_tooldir)
6085 # Find a directory in which to install a shared libgcc.
6087 AC_ARG_ENABLE(version-specific-runtime-libs,
6088 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
6089 [specify that runtime libraries should be
6090 installed in a compiler-specific directory])])
6092 # Substitute configuration variables
6095 AC_SUBST(all_compilers)
6096 AC_SUBST(all_gtfiles)
6097 AC_SUBST(all_lang_makefrags)
6098 AC_SUBST(all_languages)
6099 AC_SUBST(all_selected_languages)
6100 AC_SUBST(build_exeext)
6101 AC_SUBST(build_install_headers_dir)
6102 AC_SUBST(build_xm_file_list)
6103 AC_SUBST(build_xm_include_list)
6104 AC_SUBST(build_xm_defines)
6105 AC_SUBST(build_file_translate)
6106 AC_SUBST(check_languages)
6107 AC_SUBST(cpp_install_dir)
6108 AC_SUBST(xmake_file)
6109 AC_SUBST(tmake_file)
6110 AC_SUBST(TM_ENDIAN_CONFIG)
6111 AC_SUBST(TM_MULTILIB_CONFIG)
6112 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
6113 AC_SUBST(extra_gcc_objs)
6114 AC_SUBST(user_headers_inc_next_pre)
6115 AC_SUBST(user_headers_inc_next_post)
6116 AC_SUBST(extra_headers_list)
6117 AC_SUBST(extra_objs)
6118 AC_SUBST(extra_programs)
6119 AC_SUBST(float_h_file)
6120 AC_SUBST(gcc_config_arguments)
6121 AC_SUBST(gcc_gxx_include_dir)
6122 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
6123 AC_SUBST(host_exeext)
6124 AC_SUBST(host_xm_file_list)
6125 AC_SUBST(host_xm_include_list)
6126 AC_SUBST(host_xm_defines)
6127 AC_SUBST(out_host_hook_obj)
6129 AC_SUBST(lang_opt_files)
6130 AC_SUBST(lang_specs_files)
6131 AC_SUBST(lang_tree_files)
6132 AC_SUBST(local_prefix)
6134 AC_SUBST(objc_boehm_gc)
6136 AC_SUBST(out_object_file)
6137 AC_SUBST(common_out_file)
6138 AC_SUBST(common_out_object_file)
6139 AC_SUBST(tm_file_list)
6140 AC_SUBST(tm_include_list)
6141 AC_SUBST(tm_defines)
6142 AC_SUBST(tm_p_file_list)
6143 AC_SUBST(tm_p_include_list)
6144 AC_SUBST(xm_file_list)
6145 AC_SUBST(xm_include_list)
6146 AC_SUBST(xm_defines)
6147 AC_SUBST(use_gcc_stdint)
6148 AC_SUBST(c_target_objs)
6149 AC_SUBST(cxx_target_objs)
6150 AC_SUBST(fortran_target_objs)
6151 AC_SUBST(target_cpu_default)
6153 AC_SUBST_FILE(language_hooks)
6156 if test x${build} = x${host} ; then
6157 if test x${host} = x${target} ; then
6158 echo "Links are now set up to build a native compiler for ${target}." 1>&2
6160 echo "Links are now set up to build a cross-compiler" 1>&2
6161 echo " from ${host} to ${target}." 1>&2
6164 if test x${host} = x${target} ; then
6165 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
6166 echo " for ${target}." 1>&2
6168 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
6169 echo " from ${host} to ${target}." 1>&2
6173 AC_ARG_VAR(GMPLIBS,[How to link GMP])
6174 AC_ARG_VAR(GMPINC,[How to find GMP include files])
6176 AC_ARG_VAR(ISLLIBS,[How to link isl])
6177 AC_ARG_VAR(ISLINC,[How to find isl include files])
6178 if test "x${ISLLIBS}" != "x" ; then
6179 AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.])
6182 # Check whether isl_options_set_schedule_serialize_sccs is available;
6183 # it's new in isl 0.15.
6184 if test "x${ISLLIBS}" != "x" ; then
6185 saved_CXXFLAGS="$CXXFLAGS"
6186 CXXFLAGS="$CXXFLAGS $ISLINC $GMPINC"
6188 LIBS="$LIBS $ISLLIBS $GMPLIBS"
6190 AC_MSG_CHECKING([Checking for isl_options_set_schedule_serialize_sccs])
6191 AC_TRY_LINK([#include <isl/schedule.h>],
6192 [isl_options_set_schedule_serialize_sccs (NULL, 0);],
6193 [ac_has_isl_options_set_schedule_serialize_sccs=yes],
6194 [ac_has_isl_options_set_schedule_serialize_sccs=no])
6195 AC_MSG_RESULT($ac_has_isl_options_set_schedule_serialize_sccs)
6198 CXXFLAGS="$saved_CXXFLAGS"
6200 if test x"$ac_has_isl_options_set_schedule_serialize_sccs" = x"yes"; then
6201 AC_DEFINE(HAVE_ISL_OPTIONS_SET_SCHEDULE_SERIALIZE_SCCS, 1,
6202 [Define if isl_options_set_schedule_serialize_sccs exists.])
6207 AC_SUBST(pluginlibs)
6208 AC_SUBST(enable_plugin)
6209 if test x"$enable_plugin" = x"yes"; then
6210 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
6214 # Enable --enable-host-shared
6215 AC_ARG_ENABLE(host-shared,
6216 [AS_HELP_STRING([--enable-host-shared],
6217 [build host code as shared libraries])],
6218 [PICFLAG=-fPIC], [PICFLAG=])
6219 AC_SUBST(enable_host_shared)
6223 AC_ARG_ENABLE(libquadmath-support,
6224 [AS_HELP_STRING([--disable-libquadmath-support],
6225 [disable libquadmath support for Fortran])],
6226 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
6227 ENABLE_LIBQUADMATH_SUPPORT=yes)
6228 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
6229 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
6230 [Define to 1 to enable libquadmath support])
6234 # Specify what hash style to use by default.
6235 AC_ARG_WITH([linker-hash-style],
6236 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
6237 [specify the linker hash style])],
6238 [case x"$withval" in
6240 LINKER_HASH_STYLE=sysv
6243 LINKER_HASH_STYLE=gnu
6246 LINKER_HASH_STYLE=both
6249 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
6252 [LINKER_HASH_STYLE=''])
6253 if test x"${LINKER_HASH_STYLE}" != x; then
6254 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
6255 [The linker hash style])
6258 # Specify what should be the default of -fdiagnostics-color option.
6259 AC_ARG_WITH([diagnostics-color],
6260 [AC_HELP_STRING([--with-diagnostics-color={never,auto,auto-if-env,always}],
6261 [specify the default of -fdiagnostics-color option
6262 auto-if-env stands for -fdiagnostics-color=auto if
6263 GCC_COLOR environment variable is present and
6264 -fdiagnostics-color=never otherwise])],
6265 [case x"$withval" in
6267 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_NO
6270 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO
6273 DIAGNOSTICS_COLOR_DEFAULT=-1
6276 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_YES
6279 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-color])
6282 [DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO])
6283 AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT,
6284 [The default for -fdiagnostics-color option])
6286 # Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit
6287 # of jit/jit-playback.c.
6288 cat > gcc-driver-name.h <<EOF
6289 #define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_BASEVER}${exeext}"
6292 # Check whether --enable-default-pie was given.
6293 AC_ARG_ENABLE(default-pie,
6294 [AS_HELP_STRING([--enable-default-pie],
6295 [enable Position Independent Executable as default])],
6296 enable_default_pie=$enableval,
6297 enable_default_pie=no)
6298 if test x$enable_default_pie = xyes ; then
6299 AC_DEFINE(ENABLE_DEFAULT_PIE, 1,
6300 [Define if your target supports default PIE and it is enabled.])
6302 AC_SUBST([enable_default_pie])
6304 # Check if -fno-PIE works.
6305 AC_CACHE_CHECK([for -fno-PIE option],
6307 [saved_CXXFLAGS="$CXXFLAGS"
6308 CXXFLAGS="$CXXFLAGS -fno-PIE"
6309 AC_COMPILE_IFELSE([int main(void) {return 0;}],
6310 [gcc_cv_c_no_fpie=yes],
6311 [gcc_cv_c_no_fpie=no])
6312 CXXFLAGS="$saved_CXXFLAGS"])
6313 if test "$gcc_cv_c_no_fpie" = "yes"; then
6314 NO_PIE_CFLAGS="-fno-PIE"
6316 AC_SUBST([NO_PIE_CFLAGS])
6318 # Check if -no-pie works.
6319 AC_CACHE_CHECK([for -no-pie option],
6321 [saved_LDFLAGS="$LDFLAGS"
6322 LDFLAGS="$LDFLAGS -no-pie"
6323 AC_LINK_IFELSE([int main(void) {return 0;}],
6324 [gcc_cv_no_pie=yes],
6326 LDFLAGS="$saved_LDFLAGS"])
6327 if test "$gcc_cv_no_pie" = "yes"; then
6328 NO_PIE_FLAG="-no-pie"
6330 AC_SUBST([NO_PIE_FLAG])
6332 # Check linker supports '-z bndplt'
6333 ld_bndplt_support=no
6334 AC_MSG_CHECKING(linker -z bndplt option)
6335 if test x"$ld_is_gold" = xno; then
6336 if test $in_tree_ld = yes ; then
6337 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6338 ld_bndplt_support=yes
6340 elif test x$gcc_cv_ld != x; then
6341 # Check if linker supports -a bndplt option
6342 if $gcc_cv_ld --help 2>/dev/null | grep -- '-z bndplt' > /dev/null; then
6343 ld_bndplt_support=yes
6347 if test x"$ld_bndplt_support" = xyes; then
6348 AC_DEFINE(HAVE_LD_BNDPLT_SUPPORT, 1,
6349 [Define if your linker supports -z bndplt])
6351 AC_MSG_RESULT($ld_bndplt_support)
6353 # Check linker supports '--push-state'/'--pop-state'
6354 ld_pushpopstate_support=no
6355 AC_MSG_CHECKING(linker --push-state/--pop-state options)
6356 if test x"$ld_is_gold" = xno; then
6357 if test $in_tree_ld = yes ; then
6358 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6359 ld_pushpopstate_support=yes
6361 elif test x$gcc_cv_ld != x; then
6362 # Check if linker supports --push-state/--pop-state options
6363 if $gcc_cv_ld --help 2>/dev/null | grep -- '--push-state' > /dev/null; then
6364 ld_pushpopstate_support=yes
6368 if test x"$ld_pushpopstate_support" = xyes; then
6369 AC_DEFINE(HAVE_LD_PUSHPOPSTATE_SUPPORT, 1,
6370 [Define if your linker supports --push-state/--pop-state])
6372 AC_MSG_RESULT($ld_pushpopstate_support)
6374 # Configure the subdirectories
6375 # AC_CONFIG_SUBDIRS($subdirs)
6377 # Create the Makefile
6378 # and configure language subdirectories
6379 AC_CONFIG_FILES($all_outputs)
6381 AC_CONFIG_COMMANDS([default],
6383 case ${CONFIG_HEADERS} in
6384 *auto-host.h:config.in*)
6387 # Make sure all the subdirs exist.
6388 for d in $subdirs doc build common c-family
6390 test -d $d || mkdir $d
6393 [subdirs='$subdirs'])