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
2013 case "$host","$target" in
2014 # Darwin crosses can use the host system's libraries and headers,
2015 # because of the fat library support. Of course, it must be the
2016 # same version of Darwin on both sides. Allow the user to
2017 # just say --target=foo-darwin without a version number to mean
2018 # "the version on this system".
2019 *-*-darwin*,*-*-darwin*)
2020 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
2021 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
2022 if test $hostos = $targetos -o $targetos = darwin ; then
2024 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
2029 i?86-*-*,x86_64-*-* \
2030 | powerpc*-*-*,powerpc64*-*-*)
2031 CROSS="$CROSS -DNATIVE_CROSS" ;;
2036 if test "x$with_headers" = x; then
2043 elif test "x$TARGET_SYSTEM_ROOT" != x; then
2044 SYSTEM_HEADER_DIR=$build_system_header_dir
2047 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
2048 if test "x$with_headers" != x && test "x$with_headers" != xyes; then
2049 target_header_dir=$with_headers
2050 elif test "x$with_sysroot" = x; then
2051 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
2052 elif test "x$with_build_sysroot" != "x"; then
2053 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
2054 elif test "x$with_sysroot" = xyes; then
2055 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
2057 target_header_dir="${with_sysroot}${native_system_header_dir}"
2060 target_header_dir=${native_system_header_dir}
2063 # If this is a cross-compiler that does not
2064 # have its own set of headers then define
2067 # If this is using newlib, without having the headers available now,
2068 # then define inhibit_libc in LIBGCC2_CFLAGS.
2069 # This prevents libgcc2 from containing any code which requires libc
2071 : ${inhibit_libc=false}
2072 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
2073 test x$with_newlib = xyes ; } &&
2074 { test "x$with_headers" = xno || test ! -f "$target_header_dir/stdio.h"; } ; then
2077 AC_SUBST(inhibit_libc)
2079 # When building gcc with a cross-compiler, we need to adjust things so
2080 # that the generator programs are still built with the native compiler.
2081 # Also, we cannot run fixincludes.
2083 # These are the normal (build=host) settings:
2084 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
2085 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
2086 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
2087 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
2088 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
2089 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
2091 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS)' AC_SUBST(BUILD_NO_PIE_CFLAGS)
2092 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG)' AC_SUBST(BUILD_NO_PIE_FLAG)
2094 # And these apply if build != host, or we are generating coverage data
2095 if test x$build != x$host || test "x$coverage_flags" != x
2097 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
2098 BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CXXFLAGS_FOR_BUILD)'
2099 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
2101 NO_PIE_CFLAGS_FOR_BUILD=${NO_PIE_CFLAGS_FOR_BUILD-${NO_PIE_CFLAGS}}
2102 NO_PIE_FLAG_FOR_BUILD=${NO_PIE_FLAG_FOR_BUILD-${NO_PIE_FLAG}}
2103 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS_FOR_BUILD)'
2104 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG_FOR_BUILD)'
2106 AC_SUBST(NO_PIE_CFLAGS_FOR_BUILD)
2107 AC_SUBST(NO_PIE_FLAG_FOR_BUILD)
2109 # Expand extra_headers to include complete path.
2110 # This substitutes for lots of t-* files.
2112 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
2113 for file in ${extra_headers} ; do
2114 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
2117 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
2118 if test x"$use_gcc_tgmath" = xyes
2119 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
2122 # Define collect2 in Makefile.
2123 case $host_can_use_collect2 in
2125 *) collect2='collect2$(exeext)' ;;
2127 AC_SUBST([collect2])
2129 # Add a definition of USE_COLLECT2 if system wants one.
2130 case $use_collect2 in
2131 no) use_collect2= ;;
2134 host_xm_defines="${host_xm_defines} USE_COLLECT2"
2135 xm_defines="${xm_defines} USE_COLLECT2"
2136 case $host_can_use_collect2 in
2138 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
2144 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
2145 [Define to the name of the LTO plugin DSO that must be
2146 passed to the linker's -plugin=LIB option.])
2148 # ---------------------------
2149 # Assembler & linker features
2150 # ---------------------------
2152 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
2153 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
2154 # However when ld-new is first executed from the build tree, libtool will
2155 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
2156 # to the build tree. While doing this we need to use the previous-stage
2157 # linker, or we have an infinite loop. The presence of a shell script as
2158 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
2159 # the gcc/collect-ld script. So we need to know how libtool works, or
2160 # exec-tool will fail.
2162 m4_defun([_LT_CONFIG_COMMANDS], [])
2165 AC_SUBST(enable_fast_install)
2167 # Identify the assembler which will work hand-in-glove with the newly
2168 # built GCC, so that we can examine its features. This is the assembler
2169 # which will be driven by the driver program.
2171 # If build != host, and we aren't building gas in-tree, we identify a
2172 # build->target assembler and hope that it will have the same features
2173 # as the host->target assembler we'll be using.
2174 gcc_cv_gas_major_version=
2175 gcc_cv_gas_minor_version=
2176 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
2178 m4_pattern_allow([AS_FOR_TARGET])dnl
2179 AS_VAR_SET_IF(gcc_cv_as,, [
2180 if test -x "$DEFAULT_ASSEMBLER"; then
2181 gcc_cv_as="$DEFAULT_ASSEMBLER"
2182 elif test -f $gcc_cv_as_gas_srcdir/configure.ac \
2183 && test -f ../gas/Makefile \
2184 && test x$build = x$host; then
2185 gcc_cv_as=../gas/as-new$build_exeext
2186 elif test -x as$build_exeext; then
2187 # Build using assembler in the current directory.
2188 gcc_cv_as=./as$build_exeext
2189 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
2190 gcc_cv_as="$AS_FOR_TARGET"
2192 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
2195 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
2196 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
2197 case "$ORIGINAL_AS_FOR_TARGET" in
2198 ./as | ./as$build_exeext) ;;
2199 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2202 AC_MSG_CHECKING(what assembler to use)
2203 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
2204 # Single tree build which includes gas. We want to prefer it
2205 # over whatever linker top-level may have detected, since
2206 # we'll use what we're building after installation anyway.
2207 AC_MSG_RESULT(newly built gas)
2209 _gcc_COMPUTE_GAS_VERSION
2210 in_tree_gas_is_elf=no
2211 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
2212 || (grep 'obj_format = multi' ../gas/Makefile \
2213 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
2215 in_tree_gas_is_elf=yes
2218 AC_MSG_RESULT($gcc_cv_as)
2224 [[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]],
2225 [case "${enableval}" in
2231 install_gold_as_default=no
2233 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
2234 [case "${enableval}" in
2236 install_gold_as_default=yes
2239 if test x${default_ld} != x; then
2240 install_gold_as_default=yes
2246 AC_MSG_ERROR([invalid --enable-gold argument])
2250 # Identify the linker which will work hand-in-glove with the newly
2251 # built GCC, so that we can examine its features. This is the linker
2252 # which will be driven by the driver program.
2254 # If build != host, and we aren't building gas in-tree, we identify a
2255 # build->target linker and hope that it will have the same features
2256 # as the host->target linker we'll be using.
2257 gcc_cv_gld_major_version=
2258 gcc_cv_gld_minor_version=
2259 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2260 gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold
2261 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2263 AS_VAR_SET_IF(gcc_cv_ld,, [
2264 if test -x "$DEFAULT_LINKER"; then
2265 gcc_cv_ld="$DEFAULT_LINKER"
2266 elif test $install_gold_as_default = yes \
2267 && test -f $gcc_cv_ld_gold_srcdir/configure.ac \
2268 && test -f ../gold/Makefile \
2269 && test x$build = x$host; then
2270 gcc_cv_ld=../gold/ld-new$build_exeext
2271 elif test -f $gcc_cv_ld_gld_srcdir/configure.ac \
2272 && test -f ../ld/Makefile \
2273 && test x$build = x$host; then
2274 gcc_cv_ld=../ld/ld-new$build_exeext
2275 elif test -x collect-ld$build_exeext; then
2276 # Build using linker in the current directory.
2277 gcc_cv_ld=./collect-ld$build_exeext
2278 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2279 gcc_cv_ld="$LD_FOR_TARGET"
2281 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2284 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2285 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2286 # if the PLUGIN_LD is set ld-new, just have it as ld
2287 # as that is the installed named.
2288 if test x$PLUGIN_LD_SUFFIX = xld-new \
2289 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2292 AC_ARG_WITH(plugin-ld,
2293 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2294 [if test x"$withval" != x; then
2295 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2296 PLUGIN_LD_SUFFIX="$withval"
2298 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2299 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2301 # Check to see if we are using gold instead of ld
2302 AC_MSG_CHECKING(whether we are using gold)
2304 if test x$gcc_cv_ld != x; then
2305 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2306 | grep "GNU gold" > /dev/null; then
2310 AC_MSG_RESULT($ld_is_gold)
2312 AC_MSG_CHECKING(gold linker with split stack support as non default)
2313 # Check to see if default ld is not gold, but gold is
2314 # available and has support for split stack. If gcc was configured
2315 # with gold then no checking is done.
2317 if test x$ld_is_gold = xno && which ${gcc_cv_ld}.gold >/dev/null 2>&1; then
2319 # For platforms other than powerpc64*, enable as appropriate.
2322 ld_gold=`which ${gcc_cv_ld}.gold`
2323 # Make sure this gold has minimal split stack support
2324 if $ld_gold --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then
2325 ld_vers=`$ld_gold --version | sed 1q`
2326 gold_vers=`echo $ld_vers | sed -n \
2327 -e 's,^[[^)]]*[[ ]]\([[0-9]][[0-9]]*\.[[0-9]][[0-9]]*[[^)]]*\)) .*$,\1,p'`
2329 # check that the gold version contains the complete split stack support
2330 # on powerpc64 big and little endian
2332 case "$gold_vers" in
2333 2.25.[[1-9]]*|2.2[[6-9]][[.0-9]]*|2.[[3-9]][[.0-9]]*|[[3-9]].[[.0-9]]*) gold_non_default=yes
2335 *) gold_non_default=no
2341 if test $gold_non_default = yes; then
2342 AC_DEFINE(HAVE_GOLD_NON_DEFAULT_SPLIT_STACK, 1,
2343 [Define if the gold linker supports split stack and is available as a non-default])
2346 AC_MSG_RESULT($gold_non_default)
2348 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2349 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2350 case "$ORIGINAL_LD_FOR_TARGET" in
2351 ./collect-ld | ./collect-ld$build_exeext) ;;
2352 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2355 AC_MSG_CHECKING(what linker to use)
2356 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2357 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2358 # Single tree build which includes ld. We want to prefer it
2359 # over whatever linker top-level may have detected, since
2360 # we'll use what we're building after installation anyway.
2361 AC_MSG_RESULT(newly built ld)
2363 in_tree_ld_is_elf=no
2364 if (grep 'EMUL = .*elf' ../ld/Makefile \
2365 || grep 'EMUL = .*linux' ../ld/Makefile \
2366 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2367 in_tree_ld_is_elf=yes
2368 elif test "$ld_is_gold" = yes; then
2369 in_tree_ld_is_elf=yes
2371 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
2374 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2375 if test x$gcc_cv_gld_version != x; then
2379 case $gcc_cv_gld_version in
2382 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2385 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2386 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2388 ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext
2389 ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext
2391 AC_MSG_RESULT($gcc_cv_ld)
2393 gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext`
2394 ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext
2395 ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext
2398 AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET)
2399 AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET)
2401 # Figure out what nm we will be using.
2402 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2403 AS_VAR_SET_IF(gcc_cv_nm,, [
2404 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2405 && test -f ../binutils/Makefile \
2406 && test x$build = x$host; then
2407 gcc_cv_nm=../binutils/nm-new$build_exeext
2408 elif test -x nm$build_exeext; then
2409 gcc_cv_nm=./nm$build_exeext
2410 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2411 gcc_cv_nm="$NM_FOR_TARGET"
2413 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2416 AC_MSG_CHECKING(what nm to use)
2417 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2418 # Single tree build which includes binutils.
2419 AC_MSG_RESULT(newly built nm)
2422 AC_MSG_RESULT($gcc_cv_nm)
2426 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2427 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2428 case "$ORIGINAL_NM_FOR_TARGET" in
2429 ./nm | ./nm$build_exeext) ;;
2430 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2434 # Figure out what objdump we will be using.
2435 AS_VAR_SET_IF(gcc_cv_objdump,, [
2436 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2437 && test -f ../binutils/Makefile \
2438 && test x$build = x$host; then
2439 # Single tree build which includes binutils.
2440 gcc_cv_objdump=../binutils/objdump$build_exeext
2441 elif test -x objdump$build_exeext; then
2442 gcc_cv_objdump=./objdump$build_exeext
2443 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2444 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2446 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2449 AC_MSG_CHECKING(what objdump to use)
2450 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2451 # Single tree build which includes binutils.
2452 AC_MSG_RESULT(newly built objdump)
2453 elif test x$gcc_cv_objdump = x; then
2454 AC_MSG_RESULT(not found)
2456 AC_MSG_RESULT($gcc_cv_objdump)
2459 # Figure out what readelf we will be using.
2460 AS_VAR_SET_IF(gcc_cv_readelf,, [
2461 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2462 && test -f ../binutils/Makefile \
2463 && test x$build = x$host; then
2464 # Single tree build which includes binutils.
2465 gcc_cv_readelf=../binutils/readelf$build_exeext
2466 elif test -x readelf$build_exeext; then
2467 gcc_cv_readelf=./readelf$build_exeext
2468 elif ( set dummy $READELF_FOR_TARGET; test -x $[2] ); then
2469 gcc_cv_readelf="$READELF_FOR_TARGET"
2471 AC_PATH_PROG(gcc_cv_readelf, $READELF_FOR_TARGET)
2474 AC_MSG_CHECKING(what readelf to use)
2475 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2476 # Single tree build which includes binutils.
2477 AC_MSG_RESULT(newly built readelf)
2478 elif test x$gcc_cv_readelf = x; then
2479 AC_MSG_RESULT(not found)
2481 AC_MSG_RESULT($gcc_cv_readelf)
2484 # Figure out what assembler alignment features are present.
2485 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2489 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2490 [Define if your assembler supports .balign and .p2align.])])
2492 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2495 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2496 [Define if your assembler supports specifying the maximum number
2497 of bytes to skip when using the GAS .p2align command.])])
2499 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2502 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2503 [Define if your assembler supports .literal16.])])
2505 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2507 [conftest_label1: .word 0
2509 conftest_label2: .word 0
2511 [if test x$gcc_cv_nm != x; then
2512 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2513 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2514 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2516 else gcc_cv_as_subsection_m1=yes
2518 rm -f conftest.nm1 conftest.nm2
2520 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2521 [Define if your assembler supports .subsection and .subsection -1 starts
2522 emitting at the beginning of your section.])])
2524 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2527 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2529 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2531 [ .weakref foobar, barfnot],,
2532 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2534 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2537 .NSUBSPA $CODE$,COMDAT],,
2538 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2540 # .hidden needs to be supported in both the assembler and the linker,
2541 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2542 # This is irritatingly difficult to feature test for; we have to check the
2543 # date string after the version number. If we've got an in-tree
2544 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2546 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2549 conftest_s=' .globl foobar,hidden'
2552 conftest_s=' .hidden foobar
2556 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2557 [elf,2,13,0],, [$conftest_s])
2560 # Darwin as has some visibility support, though with a different syntax.
2561 gcc_cv_as_hidden=yes
2565 # gnu_indirect_function type is an extension proposed at
2566 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2567 # selection of function implementation
2568 AC_ARG_ENABLE(gnu-indirect-function,
2569 [AS_HELP_STRING([--enable-gnu-indirect-function],
2570 [enable the use of the @gnu_indirect_function to glibc systems])],
2571 [case $enable_gnu_indirect_function in
2573 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2574 Valid choices are 'yes' and 'no'.]) ;;
2576 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2578 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
2579 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
2580 [Define if your system supports gnu indirect functions.])
2584 if test $in_tree_ld != yes ; then
2585 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2586 if echo "$ld_ver" | grep GNU > /dev/null; then
2587 if test x"$ld_is_gold" = xyes; then
2588 # GNU gold --version looks like this:
2590 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2592 # We extract the binutils version which is more familiar and specific
2593 # than the gold version.
2594 ld_vers=`echo $ld_ver | sed -n \
2595 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2597 # GNU ld --version looks like this:
2599 # GNU ld (GNU Binutils) 2.21.51.20110225
2600 ld_vers=`echo $ld_ver | sed -n \
2601 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2603 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2604 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2605 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2606 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2610 # See acinclude.m4 (gcc_SUN_LD_VERSION) for the version number
2613 # Don't reuse gcc_gv_sun_ld_vers_* in case a linker other than
2614 # /usr/ccs/bin/ld has been configured.
2615 ld_ver=`$gcc_cv_ld -V 2>&1`
2616 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2617 ld_vers=`echo $ld_ver | sed -n \
2618 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2619 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2620 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2628 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2629 [[if test $in_tree_ld = yes ; then
2631 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2632 && test $in_tree_ld_is_elf = yes; then
2633 gcc_cv_ld_hidden=yes
2636 gcc_cv_ld_hidden=yes
2637 if test x"$ld_is_gold" = xyes; then
2639 elif echo "$ld_ver" | grep GNU > /dev/null; then
2641 mmix-knuth-mmixware)
2642 # The linker emits by default mmo, not ELF, so "no" is appropriate.
2646 if test 0"$ld_date" -lt 20020404; then
2647 if test -n "$ld_date"; then
2648 # If there was date string, but was earlier than 2002-04-04, fail
2650 elif test -z "$ld_vers"; then
2651 # If there was no date string nor ld version number, something is wrong
2654 test -z "$ld_vers_patch" && ld_vers_patch=0
2655 if test "$ld_vers_major" -lt 2; then
2657 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2658 gcc_cv_ld_hidden="no"
2659 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2667 gcc_cv_ld_hidden=yes
2670 # Darwin ld has some visibility support.
2671 gcc_cv_ld_hidden=yes
2673 hppa64*-*-hpux* | ia64*-*-hpux*)
2674 gcc_cv_ld_hidden=yes
2676 *-*-solaris2.1[0-9]*)
2677 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2678 # .symbolic was only added in Solaris 9 12/02.
2679 gcc_cv_ld_hidden=yes
2687 libgcc_visibility=no
2688 AC_SUBST(libgcc_visibility)
2689 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2690 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2691 libgcc_visibility=yes
2692 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2693 [Define if your assembler and linker support .hidden.])
2696 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2697 gcc_cv_ld_ro_rw_mix=unknown
2698 if test $in_tree_ld = yes ; then
2699 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2700 && test $in_tree_ld_is_elf = yes; then
2701 gcc_cv_ld_ro_rw_mix=read-write
2703 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2704 echo '.section myfoosect, "a"' > conftest1.s
2705 echo '.section myfoosect, "aw"' > conftest2.s
2706 echo '.byte 1' >> conftest2.s
2707 echo '.section myfoosect, "a"' > conftest3.s
2708 echo '.byte 0' >> conftest3.s
2709 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2710 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2711 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2712 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2713 conftest2.o conftest3.o > /dev/null 2>&1; then
2714 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2715 | sed -e '/myfoosect/!d' -e N`
2716 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2717 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2718 gcc_cv_ld_ro_rw_mix=read-only
2720 gcc_cv_ld_ro_rw_mix=read-write
2725 rm -f conftest.* conftest[123].*
2728 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2729 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2730 [Define if your linker links a mix of read-only
2731 and read-write sections into a read-write section.])
2733 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2735 gcc_AC_INITFINI_ARRAY
2737 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2738 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2746 [[# GAS versions before 2.11 do not support uleb128,
2747 # despite appearing to.
2748 # ??? There exists an elf-specific test that will crash
2749 # the assembler. Perhaps it's better to figure out whether
2750 # arbitrary sections are supported and try the test.
2751 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2752 if echo "$as_ver" | grep GNU > /dev/null; then
2753 as_vers=`echo $as_ver | sed -n \
2754 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2755 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2756 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2757 if test $as_major -eq 2 && test $as_minor -lt 11
2759 else gcc_cv_as_leb128=yes
2762 [AC_DEFINE(HAVE_AS_LEB128, 1,
2763 [Define if your assembler supports .sleb128 and .uleb128.])],
2764 [AC_DEFINE(HAVE_AS_LEB128, 0,
2765 [Define if your assembler supports .sleb128 and .uleb128.])])
2767 # Check if we have assembler support for unwind directives.
2768 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2775 .cfi_escape 1, 2, 3, 4, 5
2779 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2780 # read-only and read-write sections, we need to make sure that the
2781 # assembler used emits read-write .eh_frame sections.
2782 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2783 if test "x$gcc_cv_objdump" != x; then
2784 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2785 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2786 gcc_cv_as_cfi_directive=no
2789 i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*)
2790 # On Solaris/x86, make sure that GCC and assembler agree on using
2791 # read-only .eh_frame sections for 64-bit.
2792 if test x$gas = xyes; then
2793 as_ix86_64_opt="--64"
2795 as_ix86_64_opt="-xarch=amd64"
2797 if $gcc_cv_as $as_ix86_64_opt -o conftest.o conftest.s > /dev/null 2>&1 && \
2798 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2799 sed -e /.eh_frame/!d -e N | \
2800 grep READONLY > /dev/null; then
2801 gcc_cv_as_cfi_directive=yes
2803 gcc_cv_as_cfi_directive=no
2807 gcc_cv_as_cfi_directive=yes
2812 # no objdump, err on the side of caution
2813 gcc_cv_as_cfi_directive=no
2816 gcc_cv_as_cfi_directive=yes
2820 gcc_cv_as_cfi_directive=yes
2823 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2824 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2828 .cfi_adjust_cfa_offset 64
2830 .cfi_adjust_cfa_offset 128
2833 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2834 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2835 gcc_cv_as_cfi_advance_working=yes
2839 # no objdump, err on the side of caution
2840 gcc_cv_as_cfi_advance_working=no
2842 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2843 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2844 [`if test $gcc_cv_as_cfi_directive = yes \
2845 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2846 [Define 0/1 if your assembler supports CFI directives.])
2848 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2849 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2850 gcc_cv_as_cfi_personality_directive, ,,
2853 .cfi_personality 0, symbol
2855 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2856 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2857 then echo 1; else echo 0; fi`],
2858 [Define 0/1 if your assembler supports .cfi_personality.])
2860 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2861 gcc_cv_as_cfi_sections_directive, ,,
2863 .cfi_sections .debug_frame, .eh_frame
2867 win32 | pe | cygwin* | mingw32*)
2868 # Need to check that we generated the correct relocation for the
2869 # .debug_frame section. This was fixed for binutils 2.21.
2870 gcc_cv_as_cfi_sections_directive=no
2871 if test "x$gcc_cv_objdump" != x; then
2872 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2873 grep secrel > /dev/null; then
2874 gcc_cv_as_cfi_sections_directive=yes
2879 gcc_cv_as_cfi_sections_directive=yes
2882 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2883 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2884 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2885 then echo 1; else echo 0; fi`],
2886 [Define 0/1 if your assembler supports .cfi_sections.])
2888 # GAS versions up to and including 2.11.0 may mis-optimize
2890 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2898 .section .eh_frame,"aw",@progbits
2900 .4byte .LECIE1-.LSCIE1
2914 .4byte .LEFDE1-.LASFDE1
2916 .4byte .LASFDE1-__FRAME_BEGIN__
2924 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2925 cat > conftest.lit <<EOF
2926 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2927 0010 01000000 12000000 18000000 00000000 ................
2928 0020 08000000 04080000 0044 .........D @&t@
2930 cat > conftest.big <<EOF
2931 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2932 0010 00000001 00000012 00000018 00000000 ................
2933 0020 00000008 04000000 0844 .........D @&t@
2935 # If the assembler didn't choke, and we can objdump,
2936 # and we got the correct data, then succeed.
2937 # The text in the here-document typically retains its unix-style line
2938 # endings, while the output of objdump will use host line endings.
2939 # Therefore, use diff -b for the comparisons.
2940 if test x$gcc_cv_objdump != x \
2941 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2942 | tail -3 > conftest.got \
2943 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2944 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2946 gcc_cv_as_eh_frame=yes
2947 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2948 gcc_cv_as_eh_frame=buggy
2950 # Uh oh, what do we do now?
2951 gcc_cv_as_eh_frame=no
2954 if test $gcc_cv_as_eh_frame = buggy; then
2955 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2956 [Define if your assembler mis-optimizes .eh_frame data.])
2959 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2960 [elf,2,12,0], [--fatal-warnings],
2961 [.section .rodata.str, "aMS", @progbits, 1])
2962 if test $gcc_cv_as_shf_merge = no; then
2963 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2964 [elf,2,12,0], [--fatal-warnings],
2965 [.section .rodata.str, "aMS", %progbits, 1])
2967 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2968 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2969 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2971 gcc_GAS_CHECK_FEATURE([stabs directive], gcc_cv_as_stabs_directive, ,,
2972 [.stabs "gcc2_compiled.",60,0,0,0],,
2973 [AC_DEFINE(HAVE_AS_STABS_DIRECTIVE, 1,
2974 [Define if your assembler supports .stabs.])])
2976 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2977 gcc_cv_as_comdat_group,
2978 [elf,2,16,0], [--fatal-warnings],
2979 [.section .text,"axG",@progbits,.foo,comdat])
2980 if test $gcc_cv_as_comdat_group = yes; then
2981 gcc_cv_as_comdat_group_percent=no
2982 gcc_cv_as_comdat_group_group=no
2984 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2985 gcc_cv_as_comdat_group_percent,
2986 [elf,2,16,0], [--fatal-warnings],
2987 [.section .text,"axG",%progbits,.foo,comdat])
2988 if test $gcc_cv_as_comdat_group_percent = yes; then
2989 gcc_cv_as_comdat_group_group=no
2992 # Sun as uses a completely different syntax.
2997 .group foo,".text%foo",#comdat
2998 .section ".text%foo", #alloc,#execinstr,#progbits
3003 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
3005 .group foo,.text%foo,#comdat
3006 .section .text%foo, "ax", @progbits
3012 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
3013 gcc_cv_as_comdat_group_group,
3017 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
3018 gcc_cv_as_comdat_group_group=no
3022 if test x"$ld_is_gold" = xyes; then
3024 elif test $in_tree_ld = yes ; then
3026 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3027 && test $in_tree_ld_is_elf = yes; then
3030 elif echo "$ld_ver" | grep GNU > /dev/null; then
3032 if test 0"$ld_date" -lt 20050308; then
3033 if test -n "$ld_date"; then
3034 # If there was date string, but was earlier than 2005-03-08, fail
3036 elif test "$ld_vers_major" -lt 2; then
3038 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
3045 *-*-solaris2.1[1-9]*)
3047 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
3048 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
3051 # If using Sun as for COMDAT group as emitted by GCC, one needs at
3052 # least ld version 1.2267.
3053 if test "$ld_vers_major" -gt 1; then
3055 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
3057 elif test "$ld_vers_minor" -ge 2267; then
3062 # Assume linkers other than GNU ld don't support COMDAT group.
3068 # Allow overriding the automatic COMDAT group tests above.
3069 AC_ARG_ENABLE(comdat,
3070 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
3071 [comdat_group="$enable_comdat"])
3072 if test $comdat_group = no; then
3073 gcc_cv_as_comdat_group=no
3074 gcc_cv_as_comdat_group_percent=no
3075 gcc_cv_as_comdat_group_group=no
3077 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
3078 [`if test $gcc_cv_as_comdat_group = yes \
3079 || test $gcc_cv_as_comdat_group_percent = yes \
3080 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
3081 [Define 0/1 if your assembler and linker support COMDAT groups.])
3083 gcc_GAS_CHECK_FEATURE([line table discriminator support],
3084 gcc_cv_as_discriminator,
3088 .loc 1 1 0 discriminator 1],,
3089 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
3090 [Define if your assembler supports the .loc discriminator sub-directive.])])
3092 # Thread-local storage - the check is heavily parameterized.
3101 .section ".tdata","awT",@progbits
3104 ldq $27,__tls_get_addr($29) !literal!1
3105 lda $16,foo($29) !tlsgd!1
3106 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
3107 ldq $27,__tls_get_addr($29) !literal!2
3108 lda $16,foo($29) !tlsldm!2
3109 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
3110 ldq $1,foo($29) !gotdtprel
3111 ldah $2,foo($29) !dtprelhi
3112 lda $3,foo($2) !dtprello
3113 lda $4,foo($29) !dtprel
3114 ldq $1,foo($29) !gottprel
3115 ldah $2,foo($29) !tprelhi
3116 lda $3,foo($2) !tprello
3117 lda $4,foo($29) !tprel'
3120 tls_as_opt=--fatal-warnings
3124 add_s r0,r0, @foo@tpoff'
3128 cris-*-*|crisv32-*-*)
3130 .section ".tdata","awT",@progbits
3137 tls_as_opt=--fatal-warnings
3141 .section ".tdata","awT",@progbits
3153 .section ".tdata","awT",@progbits
3157 addil LT%foo-$tls_gdidx$,gp
3158 ldo RT%foo-$tls_gdidx$(%r1),%arg0
3161 addil LT%foo-$tls_ldidx$,gp
3163 ldo RT%foo-$tls_ldidx$(%r1),%arg0
3164 addil LR%foo-$tls_dtpoff$,%ret0
3165 ldo RR%foo-$tls_dtpoff$(%r1),%t1
3167 addil LT%foo-$tls_ieoff$,gp
3168 ldw RT%foo-$tls_ieoff$(%r1),%t2
3171 addil LR%foo-$tls_leoff$,%t1
3172 ldo RR%foo-$tls_leoff$(%r1),%t2'
3175 tls_as_opt=--fatal-warnings
3179 .section ".tdata","awT",%progbits
3190 i[34567]86-*-* | x86_64-*-*)
3192 i[34567]86-*-solaris2.* | x86_64-*-solaris2.1[0-9]*)
3199 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3201 .section .tdata,"awt",@progbits'
3206 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
3207 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
3211 .section ".tdata","awT",@progbits'
3215 tls_as_opt="--fatal-warnings"
3219 conftest_s="$conftest_s
3223 leal foo@tlsgd(,%ebx,1), %eax
3224 leal foo@tlsldm(%ebx), %eax
3225 leal foo@dtpoff(%eax), %edx
3226 movl foo@gottpoff(%ebx), %eax
3227 subl foo@gottpoff(%ebx), %eax
3228 addl foo@gotntpoff(%ebx), %eax
3229 movl foo@indntpoff, %eax
3230 movl \$foo@tpoff, %eax
3231 subl \$foo@tpoff, %eax
3232 leal foo@ntpoff(%ecx), %eax"
3235 if test x$on_solaris = xyes; then
3237 yes) tls_as_opt="$tls_as_opt --64" ;;
3238 no) tls_as_opt="$tls_as_opt -xarch=amd64" ;;
3241 conftest_s="$conftest_s
3245 leaq foo@tlsgd(%rip), %rdi
3246 leaq foo@tlsld(%rip), %rdi
3247 leaq foo@dtpoff(%rax), %rdx
3248 movq foo@gottpoff(%rip), %rax
3249 movq \$foo@tpoff, %rax"
3255 .section ".tdata","awT",@progbits
3258 addl r16 = @ltoff(@dtpmod(foo#)), gp
3259 addl r17 = @ltoff(@dtprel(foo#)), gp
3260 addl r18 = @ltoff(@tprel(foo#)), gp
3261 addl r19 = @dtprel(foo#), gp
3262 adds r21 = @dtprel(foo#), r13
3263 movl r23 = @dtprel(foo#)
3264 addl r20 = @tprel(foo#), gp
3265 adds r22 = @tprel(foo#), r13
3266 movl r24 = @tprel(foo#)'
3269 tls_as_opt=--fatal-warnings
3273 .section .tdata,"awT",@progbits
3277 addik r5,r20,x@TLSGD
3278 addik r5,r20,x@TLSLDM'
3281 tls_as_opt='--fatal-warnings'
3285 .section .tdata,"awT",@progbits
3289 addiu $4, $28, %tlsgd(x)
3290 addiu $4, $28, %tlsldm(x)
3291 lui $4, %dtprel_hi(x)
3292 addiu $4, $4, %dtprel_lo(x)
3293 lw $4, %gottprel(x)($28)
3294 lui $4, %tprel_hi(x)
3295 addiu $4, $4, %tprel_lo(x)'
3298 tls_as_opt='-32 --fatal-warnings'
3302 .section .tdata,"awT",@progbits
3307 move.l x@TLSGD(%a5),%a0
3308 move.l x@TLSLDM(%a5),%a0
3309 move.l x@TLSLDO(%a5),%a0
3310 move.l x@TLSIE(%a5),%a0
3311 move.l x@TLSLE(%a5),%a0'
3314 tls_as_opt='--fatal-warnings'
3318 .section ".tdata","awT",@progbits'
3321 tls_as_opt="--fatal-warnings"
3325 .section ".tdata","awT",%progbits
3329 add x0, x0, #:tlsgd_lo12:x
3334 tls_as_opt='--fatal-warnings'
3338 .extern __get_tpointer
3356 .section ".tdata","awT",@progbits
3364 addi 3,2,ld0@got@tlsgd
3370 addi 3,2,x1@got@tlsld
3376 addis 9,3,x2@dtprel@ha
3377 addi 9,9,x2@dtprel@l
3380 ld 9,x3@got@dtprel(2)
3386 tls_as_opt="-a64 --fatal-warnings"
3390 .section ".tdata","awT",@progbits
3398 addi 3,31,ld0@got@tlsgd
3400 addi 3,31,x1@got@tlsld
3403 addis 9,3,x2@dtprel@ha
3404 addi 9,9,x2@dtprel@l
3405 lwz 9,x3@got@tprel(31)
3408 addis 9,2,x2@tprel@ha
3409 addi 9,9,x2@tprel@l'
3412 tls_as_opt="-a32 --fatal-warnings"
3416 .section ".tdata","awT",@progbits
3425 l %r1,foo@GOTNTPOFF(%r12)
3426 l %r1,0(%r1):tls_load:foo
3427 bas %r14,0(%r1,%r13):tls_gdcall:foo
3428 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3431 tls_as_opt="-m31 --fatal-warnings"
3435 .section ".tdata","awT",@progbits
3443 lg %r1,foo@GOTNTPOFF(%r12)
3444 larl %r1,foo@INDNTPOFF
3445 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3446 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3449 tls_as_opt="-m64 -Aesame --fatal-warnings"
3451 sh-*-* | sh[123456789lbe]*-*-*)
3453 .section ".tdata","awT",@progbits
3463 tls_as_opt=--fatal-warnings
3467 sparc*-sun-solaris2.*)
3474 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3476 .section ".tdata",#alloc,#write,#tls'
3481 .section ".tdata","awT",@progbits'
3484 tls_as_opt="-32 --fatal-warnings"
3486 conftest_s="$conftest_s
3489 sethi %tgd_hi22(foo), %o0
3490 add %o0, %tgd_lo10(foo), %o1
3491 add %l7, %o1, %o0, %tgd_add(foo)
3492 call __tls_get_addr, %tgd_call(foo)
3493 sethi %tldm_hi22(foo), %l1
3494 add %l1, %tldm_lo10(foo), %l2
3495 add %l7, %l2, %o0, %tldm_add(foo)
3496 call __tls_get_addr, %tldm_call(foo)
3497 sethi %tldo_hix22(foo), %l3
3498 xor %l3, %tldo_lox10(foo), %l4
3499 add %o0, %l4, %l5, %tldo_add(foo)
3500 sethi %tie_hi22(foo), %o3
3501 add %o3, %tie_lo10(foo), %o3
3502 ld [%l7 + %o3], %o2, %tie_ld(foo)
3503 add %g7, %o2, %o4, %tie_add(foo)
3504 sethi %tle_hix22(foo), %l1
3505 xor %l1, %tle_lox10(foo), %o5
3506 ld [%g7 + %o5], %o1"
3510 .section ".tdata","awT",@progbits
3513 addli r0, zero, tls_gd(foo)
3514 auli r0, zero, tls_gd_ha16(foo)
3515 addli r0, r0, tls_gd_lo16(foo)
3517 addli r0, zero, tls_ie(foo)
3518 auli r0, r0, tls_ie_ha16(foo)
3519 addli r0, r0, tls_ie_lo16(foo)'
3522 tls_as_opt="--fatal-warnings"
3526 .section ".tdata","awT",@progbits
3529 shl16insli r0, zero, hw0_last_tls_gd(foo)
3530 shl16insli r0, zero, hw1_last_tls_gd(foo)
3531 shl16insli r0, r0, hw0_tls_gd(foo)
3533 shl16insli r0, zero, hw1_last_tls_ie(foo)
3534 shl16insli r0, r0, hw0_tls_ie(foo)'
3537 tls_as_opt="--fatal-warnings"
3541 .section ".tdata","awT",@progbits
3544 movi a8, foo@TLSFUNC
3545 movi a10, foo@TLSARG
3546 callx8.tls a8, foo@TLSCALL'
3553 if test "x$enable_tls" = xno ; then
3554 : # TLS explicitly disabled.
3555 elif test "x$enable_tls" = xyes ; then
3556 set_have_as_tls=yes # TLS explicitly enabled.
3557 elif test -z "$tls_first_major"; then
3558 : # If we don't have a check, assume no support.
3560 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3561 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3562 [set_have_as_tls=yes])
3564 if test $set_have_as_tls = yes ; then
3565 AC_DEFINE(HAVE_AS_TLS, 1,
3566 [Define if your assembler and linker support thread-local storage.])
3569 # Target-specific assembler checks.
3571 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3572 gcc_cv_ld_static_dynamic=no
3573 gcc_cv_ld_static_option='-Bstatic'
3574 gcc_cv_ld_dynamic_option='-Bdynamic'
3575 if test $in_tree_ld = yes ; then
3576 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3577 gcc_cv_ld_static_dynamic=yes
3579 elif test x$gcc_cv_ld != x; then
3580 # Check if linker supports -Bstatic/-Bdynamic option
3581 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3582 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3583 gcc_cv_ld_static_dynamic=yes
3586 # AIX ld uses -b flags
3587 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
3588 gcc_cv_ld_static_dynamic=yes
3589 gcc_cv_ld_static_option="-bstatic"
3590 gcc_cv_ld_dynamic_option="-bdynamic"
3592 # HP-UX ld uses -a flags to select between shared and archive.
3594 if test x"$gnu_ld" = xno; then
3595 gcc_cv_ld_static_dynamic=yes
3596 gcc_cv_ld_static_option="-aarchive_shared"
3597 gcc_cv_ld_dynamic_option="-adefault"
3600 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3602 gcc_cv_ld_static_dynamic=yes
3607 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3608 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3609 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3610 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3611 [Define to the linker option to disable use of shared objects.])
3612 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3613 [Define to the linker option to enable use of shared objects.])
3615 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3617 if test x"$demangler_in_ld" = xyes; then
3618 AC_MSG_CHECKING(linker --demangle support)
3619 gcc_cv_ld_demangle=no
3620 if test $in_tree_ld = yes; then
3621 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3622 gcc_cv_ld_demangle=yes
3624 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3625 # Check if the GNU linker supports --demangle option
3626 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3627 gcc_cv_ld_demangle=yes
3630 if test x"$gcc_cv_ld_demangle" = xyes; then
3631 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3632 [Define if your linker supports --demangle option.])
3634 AC_MSG_RESULT($gcc_cv_ld_demangle)
3637 AC_MSG_CHECKING(linker plugin support)
3639 if test -f liblto_plugin.la; then
3640 save_ld_ver="$ld_ver"
3641 save_ld_vers_major="$ld_vers_major"
3642 save_ld_vers_minor="$ld_vers_minor"
3643 save_ld_is_gold="$ld_is_gold"
3647 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3649 # FIXME: ld_is_gold?
3650 ld_vers_major="$gcc_cv_gld_major_version"
3651 ld_vers_minor="$gcc_cv_gld_minor_version"
3653 # Determine plugin linker version.
3654 # FIXME: Partial duplicate from above, generalize.
3656 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3657 if echo "$ld_ver" | grep GNU > /dev/null; then
3658 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3660 ld_vers=`echo $ld_ver | sed -n \
3661 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3663 ld_vers=`echo $ld_ver | sed -n \
3664 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3666 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3667 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3672 # Determine plugin support.
3673 if echo "$ld_ver" | grep GNU > /dev/null; then
3674 # Require GNU ld or gold 2.21+ for plugin support by default.
3675 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3677 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3678 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3683 ld_ver="$save_ld_ver"
3684 ld_vers_major="$save_ld_vers_major"
3685 ld_vers_minor="$save_ld_vers_minor"
3686 ld_is_gold="$save_ld_is_gold"
3688 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3689 [Define to the level of your linker's plugin support.])
3690 AC_MSG_RESULT($gcc_cv_lto_plugin)
3694 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,,
3695 [-mabi=lp64], [.text],,,)
3696 if test x$gcc_cv_as_aarch64_mabi = xyes; then
3697 AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
3698 [Define if your assembler supports the -mabi option.])
3700 if test x$with_abi = xilp32; then
3701 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3702 Upgrade the Assembler.])
3704 if test x"$with_multilib_list" = xdefault; then
3705 TM_MULTILIB_CONFIG=lp64
3707 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
3708 for aarch64_multilib in ${aarch64_multilibs}; do
3709 case ${aarch64_multilib} in
3711 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3712 Upgrade the Assembler.])
3720 # Check if we have binutils support for relocations types needed by -fpic
3721 gcc_GAS_CHECK_FEATURE([-fpic relocs], gcc_cv_as_aarch64_picreloc,,,
3724 ldr x0, [[x2, #:gotpage_lo15:globalsym]]
3725 ],,[AC_DEFINE(HAVE_AS_SMALL_PIC_RELOCS, 1,
3726 [Define if your assembler supports relocs needed by -fpic.])])
3727 # Enable default workaround for AArch64 Cortex-A53 erratum 835769.
3728 AC_ARG_ENABLE(fix-cortex-a53-835769,
3730 AS_HELP_STRING([--enable-fix-cortex-a53-835769],
3731 [enable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3732 AS_HELP_STRING([--disable-fix-cortex-a53-835769],
3733 [disable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3738 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1"
3743 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\
3744 Valid choices are 'yes' and 'no'.])
3750 # Enable default workaround for AArch64 Cortex-A53 erratum 843419.
3751 AC_ARG_ENABLE(fix-cortex-a53-843419,
3753 AS_HELP_STRING([--enable-fix-cortex-a53-843419],
3754 [enable workaround for AArch64 Cortex-A53 erratum 843419 by default])
3755 AS_HELP_STRING([--disable-fix-cortex-a53-843419],
3756 [disable workaround for AArch64 Cortex-A53 erratum 843419 by default])
3761 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1"
3766 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\
3767 Valid choices are 'yes' and 'no'.])
3775 # All TARGET_ABI_OSF targets.
3776 alpha*-*-linux* | alpha*-*-*bsd*)
3777 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3778 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3781 extbl $3, $2, $3 !lituse_bytoff!1
3782 ldq $2, a($29) !literal!1
3783 ldq $4, b($29) !literal!2
3784 ldq_u $3, 0($2) !lituse_base!1
3785 ldq $27, f($29) !literal!5
3786 jsr $26, ($27), f !lituse_jsr!5
3787 ldah $29, 0($26) !gpdisp!3
3788 lda $0, c($29) !gprel
3789 ldah $1, d($29) !gprelhigh
3790 lda $1, d($1) !gprellow
3791 lda $29, 0($29) !gpdisp!3],,
3792 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3793 [Define if your assembler supports explicit relocations.])])
3794 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3795 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3798 ldq $27, a($29) !literal!1
3799 jsr $26, ($27), a !lituse_jsrdirect!1],,
3800 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3801 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3805 gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax,,
3806 [--mlink-relax], [.text],,
3807 [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1,
3808 [Define if your avr assembler supports --mlink-relax option.])])
3810 gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,,
3812 [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1,
3813 [Define if your avr assembler supports -mrmw option.])])
3817 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3818 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3819 [-no-mul-bug-abort], [.text],,
3820 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3821 [Define if your assembler supports the -no-mul-bug-abort option.])])
3825 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3826 [.register %g2, #scratch],,
3827 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3828 [Define if your assembler supports .register.])])
3830 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3832 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3833 [Define if your assembler supports -relax option.])])
3835 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3836 gcc_cv_as_sparc_gotdata_op,,
3843 sethi %gdop_hix22(foo), %g1
3844 xor %g1, %gdop_lox10(foo), %g1
3845 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3846 [if test x$gcc_cv_ld != x \
3847 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3848 if test x$gcc_cv_objdump != x; then
3849 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3850 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3851 gcc_cv_as_sparc_gotdata_op=no
3853 gcc_cv_as_sparc_gotdata_op=yes
3858 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3859 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3861 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3862 gcc_cv_as_sparc_ua_pcrel,,
3870 .uaword %r_disp32(foo)],
3871 [if test x$gcc_cv_ld != x \
3872 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3873 gcc_cv_as_sparc_ua_pcrel=yes
3876 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3877 [Define if your assembler and linker support unaligned PC relative relocs.])
3879 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3880 gcc_cv_as_sparc_ua_pcrel_hidden,,
3885 .uaword %r_disp32(foo)
3886 .byte 0x32, 0x33, 0x34
3891 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3892 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3893 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3894 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3895 if $gcc_cv_objdump -R conftest 2> /dev/null \
3896 | grep 'DISP32' > /dev/null 2>&1; then
3899 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3903 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3904 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3905 ]) # unaligned pcrel relocs
3907 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3908 gcc_cv_as_sparc_offsetable_lo10,,
3911 or %g1, %lo(ab) + 12, %g1
3912 or %g1, %lo(ab + 12), %g1],
3913 [if test x$gcc_cv_objdump != x \
3914 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3915 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3916 gcc_cv_as_sparc_offsetable_lo10=yes
3918 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3919 [Define if your assembler supports offsetable %lo().])])
3921 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
3922 gcc_cv_as_sparc_fmaf,,
3925 .register %g2, #scratch
3926 .register %g3, #scratch
3928 fmaddd %f0, %f2, %f4, %f6
3929 addxccc %g1, %g2, %g3
3930 fsrl32 %f2, %f4, %f8
3931 fnaddd %f10, %f12, %f14],,
3932 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
3933 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
3935 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
3936 gcc_cv_as_sparc_sparc4,,
3939 .register %g2, #scratch
3940 .register %g3, #scratch
3943 1: cwbneg %g2, %g3, 1f
3946 aes_kexpand0 %f4, %f6, %f8
3947 des_round %f38, %f40, %f42, %f44
3948 camellia_f %f54, %f56, %f58, %f60
3949 kasumi_fi_xor %f46, %f48, %f50, %f52],,
3950 [AC_DEFINE(HAVE_AS_SPARC4, 1,
3951 [Define if your assembler supports SPARC4 instructions.])])
3953 gcc_GAS_CHECK_FEATURE([SPARC5 and VIS 4.0 instructions],
3954 gcc_cv_as_sparc_sparc5,,
3957 .register %g2, #scratch
3958 .register %g3, #scratch
3961 fpadd8 %f0, %f2, %f4],,
3962 [AC_DEFINE(HAVE_AS_SPARC5_VIS4, 1,
3963 [Define if your assembler supports SPARC5 and VIS 4.0 instructions.])])
3965 gcc_GAS_CHECK_FEATURE([LEON instructions],
3966 gcc_cv_as_sparc_leon,,
3969 .register %g2, #scratch
3970 .register %g3, #scratch
3974 casa [[%g2]] 0xb, %g3, %g1],,
3975 [AC_DEFINE(HAVE_AS_LEON, 1,
3976 [Define if your assembler supports LEON instructions.])])
3980 i[34567]86-*-* | x86_64-*-*)
3984 # Full C++ conformance when using a shared libstdc++-v3 requires some
3985 # support from the Cygwin DLL, which in more recent versions exports
3986 # wrappers to aid in interposing and redirecting operators new, delete,
3987 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3988 # are configuring for a version of Cygwin that exports the wrappers.
3989 if test x$host = x$target && test x$host_cpu = xi686; then
3990 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3992 # Can't check presence of libc functions during cross-compile, so
3993 # we just have to assume we're building for an up-to-date target.
3994 gcc_ac_cygwin_dll_wrappers=yes
3996 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3997 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3998 [Define if you want to generate code by default that assumes that the
3999 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
4002 cygwin* | pe | mingw32*)
4003 # Recent binutils allows the three-operand form of ".comm" on PE. This
4004 # definition is used unconditionally to initialise the default state of
4005 # the target option variable that governs usage of the feature.
4006 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
4007 [2,19,52],,[.comm foo,1,32])
4008 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
4009 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
4010 [Define if your assembler supports specifying the alignment
4011 of objects allocated using the GAS .comm command.])
4012 # Used for DWARF 2 in PE
4013 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
4014 gcc_cv_as_ix86_pe_secrel32,
4020 [if test x$gcc_cv_ld != x \
4021 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
4022 gcc_cv_as_ix86_pe_secrel32=yes
4025 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
4026 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
4027 # Test if the assembler supports the extended form of the .section
4028 # directive that specifies section alignment. LTO support uses this,
4029 # but normally only after installation, so we warn but don't fail the
4030 # configure if LTO is enabled but the assembler does not support it.
4031 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
4032 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
4033 if test x$gcc_cv_as_section_has_align != xyes; then
4034 case ",$enable_languages," in
4036 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
4043 # Test if the assembler supports the section flag 'e' for specifying
4044 # an excluded section.
4045 gcc_GAS_CHECK_FEATURE([.section with e], gcc_cv_as_section_has_e,
4046 [2,22,51], [--fatal-warnings],
4049 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
4050 [`if test $gcc_cv_as_section_has_e = yes; then echo 1; else echo 0; fi`],
4051 [Define if your assembler supports specifying the section flag e.])
4053 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
4054 gcc_cv_as_ix86_filds,,,
4055 [filds (%ebp); fists (%ebp)],,
4056 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
4057 [Define if your assembler uses filds and fists mnemonics.])])
4059 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
4060 gcc_cv_as_ix86_fildq,,,
4061 [fildq (%ebp); fistpq (%ebp)],,
4062 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
4063 [Define if your assembler uses fildq and fistq mnemonics.])])
4065 gcc_GAS_CHECK_FEATURE([cmov syntax],
4066 gcc_cv_as_ix86_cmov_sun_syntax,,,
4067 [cmovl.l %edx, %eax],,
4068 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
4069 [Define if your assembler supports the Sun syntax for cmov.])])
4071 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
4072 gcc_cv_as_ix86_ffreep,,,
4074 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
4075 [Define if your assembler supports the ffreep mnemonic.])])
4077 gcc_GAS_CHECK_FEATURE([.quad directive],
4078 gcc_cv_as_ix86_quad,,,
4080 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
4081 [Define if your assembler supports the .quad directive.])])
4083 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
4084 gcc_cv_as_ix86_sahf,,,
4087 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
4088 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
4090 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
4091 gcc_cv_as_ix86_interunit_movq,,,
4095 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
4096 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
4097 [Define if your assembler supports interunit movq mnemonic.])
4099 gcc_GAS_CHECK_FEATURE([hle prefixes],
4100 gcc_cv_as_ix86_hle,,,
4101 [lock xacquire cmpxchg %esi, (%ecx)],,
4102 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
4103 [Define if your assembler supports HLE prefixes.])])
4105 gcc_GAS_CHECK_FEATURE([swap suffix],
4106 gcc_cv_as_ix86_swap,,,
4107 [movl.s %esp, %ebp],,
4108 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
4109 [Define if your assembler supports the swap suffix.])])
4111 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
4112 gcc_cv_as_ix86_diff_sect_delta,,,
4120 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
4121 [Define if your assembler supports the subtraction of symbols in different sections.])])
4123 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
4124 gcc_cv_as_ix86_rep_lock_prefix,,,
4130 lock addl %edi, (%eax,%esi)
4131 lock orl $0, (%esp)],,
4132 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
4133 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
4135 gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
4136 gcc_cv_as_ix86_ud2,,,
4138 [AC_DEFINE(HAVE_AS_IX86_UD2, 1,
4139 [Define if your assembler supports the 'ud2' mnemonic.])])
4141 # Enforce 32-bit output with gas and gld.
4142 if test x$gas = xyes; then
4143 as_ix86_gas_32_opt="--32"
4145 if echo "$ld_ver" | grep GNU > /dev/null; then
4146 if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then
4147 ld_ix86_gld_32_opt="-melf_i386_sol2"
4149 ld_ix86_gld_32_opt="-melf_i386"
4153 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
4154 gcc_cv_as_ix86_tlsgdplt,,
4155 [$as_ix86_gas_32_opt],
4156 [call tls_gd@tlsgdplt],
4157 [if test x$gcc_cv_ld != x \
4158 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4159 gcc_cv_as_ix86_tlsgdplt=yes
4162 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
4163 [Define if your assembler and linker support @tlsgdplt.])])
4166 .section .tdata,"aw'$tls_section_flag'",@progbits
4168 .section .text,"ax",@progbits
4169 call tls_ld@tlsldmplt'
4171 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
4172 gcc_cv_as_ix86_tlsldmplt,,
4173 [$as_ix86_gas_32_opt],
4175 [if test x$gcc_cv_ld != x \
4176 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4177 gcc_cv_as_ix86_tlsldmplt=yes
4180 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT,
4181 [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`],
4182 [Define to 1 if your assembler and linker support @tlsldmplt.])
4185 .section .text,"ax",@progbits
4187 .type _start, @function
4189 leal value@tlsldm(%ebx), %eax
4190 call ___tls_get_addr@plt
4192 .section .tdata,"aw'$tls_section_flag'",@progbits
4193 .type value, @object
4195 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc],
4196 gcc_cv_as_ix86_tlsldm,,
4197 [$as_ix86_gas_32_opt],
4199 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4200 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then
4201 if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \
4202 || dis conftest 2>/dev/null | grep nop > /dev/null; then
4203 gcc_cv_as_ix86_tlsldm=yes
4207 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM,
4208 [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`],
4209 [Define to 1 if your assembler and linker support @tlsldm.])
4220 gcc_GAS_CHECK_FEATURE([R_386_GOT32X reloc],
4221 gcc_cv_as_ix86_got32x,,
4222 [$as_ix86_gas_32_opt],
4224 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4225 && test x$gcc_cv_readelf != x \
4226 && $gcc_cv_readelf --relocs --wide conftest.o 2>&1 \
4227 | grep R_386_GOT32X > /dev/null 2>&1 \
4228 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4229 if $gcc_cv_objdump -dw conftest 2>&1 \
4230 | grep 0xffffff > /dev/null 2>&1; then
4231 gcc_cv_as_ix86_got32x=no
4233 gcc_cv_as_ix86_got32x=yes
4237 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_GOT32X,
4238 [`if test x"$gcc_cv_as_ix86_got32x" = xyes; then echo 1; else echo 0; fi`],
4239 [Define 0/1 if your assembler and linker support @GOT.])
4241 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
4242 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],
4243 [$as_ix86_gas_32_opt],
4249 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
4250 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
4251 [Define true if the assembler supports '.long foo@GOTOFF'.])
4254 .section .text,"ax",@progbits
4256 .type _start, @function
4258 leal ld@tlsldm(%ecx), %eax
4259 call *___tls_get_addr@GOT(%ecx)
4260 leal gd@tlsgd(%ecx), %eax
4261 call *___tls_get_addr@GOT(%ecx)
4263 .section .tdata,"aw'$tls_section_flag'",@progbits
4271 gcc_GAS_CHECK_FEATURE([calling ___tls_get_addr via GOT],
4272 gcc_cv_as_ix86_tls_get_addr_via_got,,
4273 [$as_ix86_gas_32_opt],
4275 [if test x$gcc_cv_ld != x \
4276 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4277 gcc_cv_as_ix86_tls_get_addr_via_got=yes
4280 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLS_GET_ADDR_GOT,
4281 [`if test x"$gcc_cv_as_ix86_tls_get_addr_via_got" = xyes; then echo 1; else echo 0; fi`],
4282 [Define 0/1 if your assembler and linker support calling ___tls_get_addr via GOT.])
4286 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
4287 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
4289 addl r15 = @ltoffx(x#), gp
4291 ld8.mov r16 = [[r15]], x#],,
4292 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
4293 [Define if your assembler supports ltoffx and ldxmov relocations.])])
4301 gcc_GAS_CHECK_FEATURE([.machine directive support],
4302 gcc_cv_as_machine_directive,,,
4303 [ .machine ppc7400])
4304 if test x$gcc_cv_as_machine_directive != xyes; then
4305 echo "*** This target requires an assembler supporting \".machine\"" >&2
4306 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
4307 test x$build = x$target && exit 1
4313 *-*-aix*) conftest_s=' .machine "pwr5"
4316 *-*-darwin*) conftest_s=' .text
4318 *) conftest_s=' .machine power4
4323 gcc_GAS_CHECK_FEATURE([mfcr field support],
4324 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
4326 [AC_DEFINE(HAVE_AS_MFCRF, 1,
4327 [Define if your assembler supports mfcr field.])])
4330 *-*-aix*) conftest_s=' .machine "pwr5"
4333 *) conftest_s=' .machine power5
4338 gcc_GAS_CHECK_FEATURE([popcntb support],
4339 gcc_cv_as_powerpc_popcntb, [2,17,0],,
4341 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
4342 [Define if your assembler supports popcntb field.])])
4345 *-*-aix*) conftest_s=' .machine "pwr5x"
4348 *) conftest_s=' .machine power5
4353 gcc_GAS_CHECK_FEATURE([fp round support],
4354 gcc_cv_as_powerpc_fprnd, [2,17,0],,
4356 [AC_DEFINE(HAVE_AS_FPRND, 1,
4357 [Define if your assembler supports fprnd.])])
4360 *-*-aix*) conftest_s=' .machine "pwr6"
4363 *) conftest_s=' .machine power6
4368 gcc_GAS_CHECK_FEATURE([move fp gpr support],
4369 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
4371 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
4372 [Define if your assembler supports mffgpr and mftgpr.])])
4375 *-*-aix*) conftest_s=' .csect .text[[PR]]
4377 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
4381 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
4382 *) conftest_s=' .text
4384 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
4387 gcc_GAS_CHECK_FEATURE([rel16 relocs],
4388 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
4390 [AC_DEFINE(HAVE_AS_REL16, 1,
4391 [Define if your assembler supports R_PPC_REL16 relocs.])])
4394 *-*-aix*) conftest_s=' .machine "pwr6"
4397 *) conftest_s=' .machine power6
4402 gcc_GAS_CHECK_FEATURE([compare bytes support],
4403 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
4405 [AC_DEFINE(HAVE_AS_CMPB, 1,
4406 [Define if your assembler supports cmpb.])])
4409 *-*-aix*) conftest_s=' .machine "pwr6"
4412 *) conftest_s=' .machine power6
4417 gcc_GAS_CHECK_FEATURE([decimal float support],
4418 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
4420 [AC_DEFINE(HAVE_AS_DFP, 1,
4421 [Define if your assembler supports DFP instructions.])])
4424 *-*-aix*) conftest_s=' .machine "pwr7"
4427 *) conftest_s=' .machine power7
4432 gcc_GAS_CHECK_FEATURE([vector-scalar support],
4433 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
4435 [AC_DEFINE(HAVE_AS_VSX, 1,
4436 [Define if your assembler supports VSX instructions.])])
4439 *-*-aix*) conftest_s=' .machine "pwr7"
4442 *) conftest_s=' .machine power7
4447 gcc_GAS_CHECK_FEATURE([popcntd support],
4448 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
4450 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
4451 [Define if your assembler supports POPCNTD instructions.])])
4454 *-*-aix*) conftest_s=' .machine "pwr8"
4455 .csect .text[[PR]]';;
4456 *) conftest_s=' .machine power8
4460 gcc_GAS_CHECK_FEATURE([power8 support],
4461 gcc_cv_as_powerpc_power8, [2,19,2], -a32,
4463 [AC_DEFINE(HAVE_AS_POWER8, 1,
4464 [Define if your assembler supports POWER8 instructions.])])
4467 *-*-aix*) conftest_s=' .machine "pwr9"
4468 .csect .text[[PR]]';;
4469 *) conftest_s=' .machine power9
4473 gcc_GAS_CHECK_FEATURE([power9 support],
4474 gcc_cv_as_powerpc_power9, [2,19,2], -a32,
4476 [AC_DEFINE(HAVE_AS_POWER9, 1,
4477 [Define if your assembler supports POWER9 instructions.])])
4480 *-*-aix*) conftest_s=' .csect .text[[PR]]
4482 *) conftest_s=' .text
4486 gcc_GAS_CHECK_FEATURE([lwsync support],
4487 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
4489 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
4490 [Define if your assembler supports LWSYNC instructions.])])
4493 *-*-aix*) conftest_s=' .machine "476"
4496 *) conftest_s=' .machine "476"
4501 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
4502 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
4504 [AC_DEFINE(HAVE_AS_DCI, 1,
4505 [Define if your assembler supports the DCI/ICI instructions.])])
4507 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4508 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
4509 [.gnu_attribute 4,1],,
4510 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4511 [Define if your assembler supports .gnu_attribute.])])
4513 gcc_GAS_CHECK_FEATURE([tls marker support],
4514 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
4515 [ bl __tls_get_addr(x@tlsgd)],,
4516 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
4517 [Define if your assembler supports arg info for __tls_get_addr.])])
4519 gcc_GAS_CHECK_FEATURE([prologue entry point marker support],
4520 gcc_cv_as_powerpc_entry_markers, [2,26,0],-a64 --fatal-warnings,
4521 [ .reloc .,R_PPC64_ENTRY; nop],,
4522 [AC_DEFINE(HAVE_AS_ENTRY_MARKERS, 1,
4523 [Define if your assembler supports the R_PPC64_ENTRY relocation.])])
4527 gcc_GAS_CHECK_FEATURE([AIX .ref support],
4528 gcc_cv_as_aix_ref, [2,21,0],,
4529 [ .csect stuff[[rw]]
4535 [AC_DEFINE(HAVE_AS_REF, 1,
4536 [Define if your assembler supports .ref])])
4538 gcc_GAS_CHECK_FEATURE([AIX DWARF location lists section support],
4539 gcc_cv_as_aix_dwloc, [2,21,0],,
4544 [AC_DEFINE(HAVE_XCOFF_DWARF_EXTRAS, 1,
4545 [Define if your assembler supports AIX debug frame section label reference.])])
4551 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4552 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
4553 [ lw $4,%gp_rel(foo)($4)],,
4554 [if test x$target_cpu_default = x
4555 then target_cpu_default=MASK_EXPLICIT_RELOCS
4556 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
4559 gcc_GAS_CHECK_FEATURE([-mno-shared support],
4560 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
4561 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
4562 [Define if the assembler understands -mno-shared.])])
4564 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4565 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
4566 [.gnu_attribute 4,1],,
4567 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4568 [Define if your assembler supports .gnu_attribute.])])
4570 gcc_GAS_CHECK_FEATURE([.module support],
4571 gcc_cv_as_mips_dot_module,,[-32],
4574 [AC_DEFINE(HAVE_AS_DOT_MODULE, 1,
4575 [Define if your assembler supports .module.])])
4576 if test x$gcc_cv_as_mips_dot_module = xno \
4577 && test x$with_fp_32 != x; then
4579 [Requesting --with-fp-32= requires assembler support for .module.])
4582 gcc_GAS_CHECK_FEATURE([.micromips support],
4583 gcc_cv_as_micromips_support,,[--fatal-warnings],
4585 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
4586 [Define if your assembler supports the .set micromips directive])])
4588 gcc_GAS_CHECK_FEATURE([.dtprelword support],
4589 gcc_cv_as_mips_dtprelword, [2,18,0],,
4590 [.section .tdata,"awT",@progbits
4594 .dtprelword x+0x8000],,
4595 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
4596 [Define if your assembler supports .dtprelword.])])
4598 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
4599 gcc_cv_as_mips_dspr1_mult,,,
4609 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
4610 [Define if your assembler supports DSPR1 mult.])])
4612 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
4613 gcc_cv_as_ld_jalr_reloc=no
4614 if test $gcc_cv_as_mips_explicit_relocs = yes; then
4615 if test $in_tree_ld = yes ; then
4616 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
4617 && test $in_tree_ld_is_elf = yes; then
4618 gcc_cv_as_ld_jalr_reloc=yes
4620 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4621 echo ' .ent x' > conftest.s
4622 echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s
4623 echo ' lw $25,%call16(y)($28)' >> conftest.s
4624 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
4625 echo '1: jalr $25' >> conftest.s
4626 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
4627 echo '1: jalr $25' >> conftest.s
4628 echo ' .end x' >> conftest.s
4629 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4630 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4631 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4632 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4633 gcc_cv_as_ld_jalr_reloc=yes
4639 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4640 if test x$target_cpu_default = x; then
4641 target_cpu_default=MASK_RELAX_PIC_CALLS
4643 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4646 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4648 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4649 [gcc_cv_ld_mips_personality_relaxation],
4650 [gcc_cv_ld_mips_personality_relaxation=no
4651 if test $in_tree_ld = yes ; then
4652 if test "$gcc_cv_gld_major_version" -eq 2 \
4653 -a "$gcc_cv_gld_minor_version" -ge 21 \
4654 -o "$gcc_cv_gld_major_version" -gt 2; then
4655 gcc_cv_ld_mips_personality_relaxation=yes
4657 elif test x$gcc_cv_as != x \
4658 -a x$gcc_cv_ld != x \
4659 -a x$gcc_cv_readelf != x ; then
4660 cat > conftest.s <<EOF
4662 .cfi_personality 0x80,indirect_ptr
4669 .section .data,"aw",@progbits
4673 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4674 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4675 if $gcc_cv_readelf -d conftest 2>&1 \
4676 | grep TEXTREL > /dev/null 2>&1; then
4678 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4679 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4682 gcc_cv_ld_mips_personality_relaxation=yes
4686 rm -f conftest.s conftest.o conftest])
4687 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4688 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4689 [Define if your linker can relax absolute .eh_frame personality
4690 pointers into PC-relative form.])
4693 gcc_GAS_CHECK_FEATURE([-mnan= support],
4694 gcc_cv_as_mips_nan,,
4696 [AC_DEFINE(HAVE_AS_NAN, 1,
4697 [Define if the assembler understands -mnan=.])])
4698 if test x$gcc_cv_as_mips_nan = xno \
4699 && test x$with_nan != x; then
4701 [Requesting --with-nan= requires assembler support for -mnan=])
4705 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4706 gcc_cv_as_s390_gnu_attribute, [2,18,0],,
4707 [.gnu_attribute 8,1],,
4708 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4709 [Define if your assembler supports .gnu_attribute.])])
4710 gcc_GAS_CHECK_FEATURE([.machine and .machinemode support],
4711 gcc_cv_as_s390_machine_machinemode, [2,24,0],,
4716 [AC_DEFINE(HAVE_AS_MACHINE_MACHINEMODE, 1,
4717 [Define if your assembler supports .machine and .machinemode.])])
4718 gcc_GAS_CHECK_FEATURE([architecture modifiers support],
4719 gcc_cv_as_s390_architecture_modifiers, [2,26,0],,
4720 [ .machine z13+vx ],,
4721 [AC_DEFINE(HAVE_AS_ARCHITECTURE_MODIFIERS, 1,
4722 [Define if your assembler supports architecture modifiers.])])
4726 # Mips and HP-UX need the GNU assembler.
4727 # Linux on IA64 might be able to use the Intel assembler.
4730 mips*-*-* | *-*-hpux* )
4731 if test x$gas_flag = xyes \
4732 || test x"$host" != x"$build" \
4733 || test ! -x "$gcc_cv_as" \
4734 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4737 echo "*** This configuration requires the GNU assembler" >&2
4743 # ??? Not all targets support dwarf2 debug_line, even within a version
4744 # of gas. Moreover, we need to emit a valid instruction to trigger any
4745 # info to the output file. So, as supported targets are added to gas 2.11,
4746 # add some instruction here to (also) show we expect this might work.
4747 # ??? Once 2.11 is released, probably need to add first known working
4748 # version to the per-target configury.
4750 aarch64 | alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze \
4751 | mips | nios2 | pa | rs6000 | score | sparc | spu | tilegx | tilepro \
4752 | visium | xstormy16 | xtensa)
4762 if test x"$insn" != x; then
4764 .file 1 \"conftest.s\"
4767 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4768 gcc_cv_as_dwarf2_debug_line,
4769 [elf,2,11,0],, [$conftest_s],
4770 [if test x$gcc_cv_objdump != x \
4771 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4772 | grep debug_line > /dev/null 2>&1; then
4773 gcc_cv_as_dwarf2_debug_line=yes
4776 # The .debug_line file table must be in the exact order that
4777 # we specified the files, since these indices are also used
4778 # by DW_AT_decl_file. Approximate this test by testing if
4779 # the assembler bitches if the same index is assigned twice.
4780 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4781 gcc_cv_as_dwarf2_file_buggy,,,
4785 if test $gcc_cv_as_dwarf2_debug_line = yes \
4786 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4787 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4788 [Define if your assembler supports dwarf2 .file/.loc directives,
4789 and preserves file table indices exactly as given.])
4792 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4793 gcc_cv_as_gdwarf2_flag,
4794 [elf,2,11,0], [--gdwarf2], [$insn],,
4795 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4796 [Define if your assembler supports the --gdwarf2 option.])])
4798 gcc_GAS_CHECK_FEATURE([--gstabs option],
4799 gcc_cv_as_gstabs_flag,
4800 [elf,2,11,0], [--gstabs], [$insn],,
4801 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4802 [Define if your assembler supports the --gstabs option.])])
4804 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4805 gcc_cv_as_debug_prefix_map_flag,
4806 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4807 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4808 [Define if your assembler supports the --debug-prefix-map option.])])
4811 gcc_GAS_CHECK_FEATURE([compressed debug sections],
4812 gcc_cv_as_compress_debug,,,,
4813 [# gas compiled without zlib cannot compress debug sections and warns
4814 # about it, but still exits successfully. So check for this, too.
4815 if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null
4817 gcc_cv_as_compress_debug=0
4818 # Since binutils 2.26, gas supports --compress-debug-sections=type,
4819 # defaulting to the ELF gABI format.
4820 elif $gcc_cv_as --compress-debug-sections=zlib-gnu -o conftest.o conftest.s > /dev/null 2>&1
4822 gcc_cv_as_compress_debug=2
4823 gcc_cv_as_compress_debug_option="--compress-debug-sections"
4824 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
4825 # Before binutils 2.26, gas only supported --compress-debug-options and
4826 # emitted the traditional GNU format.
4827 elif $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s > /dev/null 2>&1
4829 gcc_cv_as_compress_debug=1
4830 gcc_cv_as_compress_debug_option="--compress-debug-sections"
4831 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
4833 gcc_cv_as_compress_debug=0
4835 AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug,
4836 [Define to the level of your assembler's compressed debug section support.])
4837 AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option",
4838 [Define to the assembler option to enable compressed debug sections.])
4839 AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option",
4840 [Define to the assembler option to disable compressed debug sections.])
4842 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4845 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4846 [Define if your assembler supports .lcomm with an alignment field.])])
4848 if test x$with_sysroot = x && test x$host = x$target \
4849 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4850 && test "$prefix" != "NONE"; then
4851 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4852 [Define to PREFIX/include if cpp should also search that directory.])
4855 # Determine the version of glibc, if any, used on the target.
4856 AC_MSG_CHECKING([for target glibc version])
4857 AC_ARG_WITH([glibc-version],
4858 [AS_HELP_STRING([--with-glibc-version=M.N],
4859 [assume GCC used with glibc version M.N or later])], [
4860 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
4861 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
4862 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
4864 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
4866 glibc_version_major=0
4867 glibc_version_minor=0
4868 [if test -f $target_header_dir/features.h \
4869 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
4870 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
4871 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
4872 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
4874 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
4875 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MAJOR], [$glibc_version_major],
4876 [GNU C Library major version number used on the target, or 0.])
4877 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MINOR], [$glibc_version_minor],
4878 [GNU C Library minor version number used on the target, or 0.])
4880 AC_ARG_ENABLE(gnu-unique-object,
4881 [AS_HELP_STRING([--enable-gnu-unique-object],
4882 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4883 [case $enable_gnu_unique_object in
4885 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4886 Valid choices are 'yes' and 'no'.]) ;;
4888 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4890 [.type foo, '$target_type_format_char'gnu_unique_object],,
4891 # We need to unquote above to to use the definition from config.gcc.
4892 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4893 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
4895 if test x$enable_gnu_unique_object = xyes; then
4896 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4897 [Define if your assembler supports @gnu_unique_object.])
4900 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4901 [gcc_cv_as_line_zero],
4902 [gcc_cv_as_line_zero=no
4903 if test $in_tree_gas = yes; then
4904 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4905 elif test "x$gcc_cv_as" != x; then
4906 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4907 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4908 test "x`cat conftest.out`" = x
4910 gcc_cv_as_line_zero=yes
4912 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4913 cat conftest.s >&AS_MESSAGE_LOG_FD
4914 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4915 cat conftest.out >&AS_MESSAGE_LOG_FD
4917 rm -f conftest.o conftest.s conftest.out
4919 if test "x$gcc_cv_as_line_zero" = xyes; then
4920 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4921 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4924 AC_MSG_CHECKING(support for thin archives)
4925 thin_archive_support=no
4926 echo 'int main (void) { return 0; }' > conftest.c
4927 if ($AR --version | sed 1q | grep "GNU ar" \
4928 && $CC $CFLAGS -c conftest.c \
4929 && $AR rcT conftest.a conftest.o \
4930 && $CC $CFLAGS $LDFLAGS -o conftest conftest.a) >/dev/null 2>&1; then
4931 thin_archive_support=yes
4933 rm -f conftest.c conftest.o conftest.a conftest
4934 AC_MSG_RESULT($thin_archive_support)
4935 AC_SUBST(thin_archive_support)
4937 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4938 gcc_cv_ld_eh_frame_hdr=no
4939 if test $in_tree_ld = yes ; then
4940 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4941 && test $in_tree_ld_is_elf = yes; then
4942 gcc_cv_ld_eh_frame_hdr=yes
4944 elif test x$gcc_cv_ld != x; then
4945 if echo "$ld_ver" | grep GNU > /dev/null; then
4946 # Check if linker supports --eh-frame-hdr option
4947 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4948 gcc_cv_ld_eh_frame_hdr=yes
4953 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4954 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4955 gcc_cv_ld_eh_frame_hdr=yes
4961 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4962 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4963 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4964 [Define if your linker supports .eh_frame_hdr.])
4966 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4968 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
4969 gcc_cv_ld_eh_frame_ciev3=no
4970 if test $in_tree_ld = yes ; then
4971 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4972 && test $in_tree_ld_is_elf = yes; then
4973 gcc_cv_ld_eh_frame_ciev3=yes
4975 elif test x$gcc_cv_ld != x; then
4976 if echo "$ld_ver" | grep GNU > /dev/null; then
4977 gcc_cv_ld_eh_frame_ciev3=yes
4978 if test 0"$ld_date" -lt 20040513; then
4979 if test -n "$ld_date"; then
4980 # If there was date string, but was earlier than 2004-05-13, fail
4981 gcc_cv_ld_eh_frame_ciev3=no
4982 elif test "$ld_vers_major" -lt 2; then
4983 gcc_cv_ld_eh_frame_ciev3=no
4984 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
4985 gcc_cv_ld_eh_frame_ciev3=no
4991 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
4992 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
4993 gcc_cv_ld_eh_frame_ciev3=yes
4999 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
5000 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
5001 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
5002 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
5004 AC_MSG_CHECKING(linker position independent executable support)
5006 if test $in_tree_ld = yes ; then
5008 # Full PIE support on Solaris was only introduced in gld 2.26.
5009 *-*-solaris2*) gcc_gld_pie_min_version=26 ;;
5010 *) gcc_gld_pie_min_version=15 ;;
5012 if test "$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 \
5013 && test $in_tree_ld_is_elf = yes; then
5016 elif test x$gcc_cv_ld != x; then
5017 # Check if linker supports -pie option
5018 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
5022 if echo "$ld_ver" | grep GNU > /dev/null \
5023 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
5030 *-*-solaris2.1[[1-9]]*)
5031 # Solaris 11.x and Solaris 12 added PIE support.
5032 if $gcc_cv_ld -z help 2>&1 | grep -- type.*pie > /dev/null; then
5039 if test x"$gcc_cv_ld_pie" = xyes; then
5040 AC_DEFINE(HAVE_LD_PIE, 1,
5041 [Define if your linker supports PIE option.])
5043 AC_MSG_RESULT($gcc_cv_ld_pie)
5045 AC_MSG_CHECKING(linker PIE support with copy reloc)
5046 gcc_cv_ld_pie_copyreloc=no
5047 if test $gcc_cv_ld_pie = yes ; then
5048 if test $in_tree_ld = yes ; then
5049 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
5050 gcc_cv_ld_pie_copyreloc=yes
5052 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5053 # Check if linker supports -pie option with copy reloc
5055 i?86-*-linux* | x86_64-*-linux*)
5056 cat > conftest1.s <<EOF
5059 .type a_glob, @object
5064 cat > conftest2.s <<EOF
5067 .type main, @function
5069 movl %eax, a_glob(%rip)
5072 .section .data.rel,"aw",@progbits
5077 if $gcc_cv_as --64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5078 && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \
5079 && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5080 && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then
5081 gcc_cv_ld_pie_copyreloc=yes
5083 rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s
5088 AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC,
5089 [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`],
5090 [Define 0/1 if your linker supports -pie option with copy reloc.])
5091 AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc)
5093 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
5094 gcc_cv_ld_eh_gc_sections=no
5095 if test $in_tree_ld = yes ; then
5096 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
5097 && test $in_tree_ld_is_elf = yes; then
5098 gcc_cv_ld_eh_gc_sections=yes
5100 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
5101 cat > conftest.s <<EOF
5104 .type _start, @function
5107 .size _start, .-_start
5108 .section .text.foo,"ax",@progbits
5109 .type foo, @function
5113 .section .gcc_except_table.foo,"a",@progbits
5116 .section .eh_frame,"a",@progbits
5119 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5120 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5121 | grep "gc-sections option ignored" > /dev/null; then
5122 gcc_cv_ld_eh_gc_sections=no
5123 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5124 | grep gcc_except_table > /dev/null; then
5125 gcc_cv_ld_eh_gc_sections=yes
5126 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
5127 if test x$gcc_cv_as_comdat_group != xyes; then
5128 gcc_cv_ld_eh_gc_sections=no
5129 cat > conftest.s <<EOF
5132 .type _start, @function
5135 .size _start, .-_start
5136 .section .gnu.linkonce.t.foo,"ax",@progbits
5137 .type foo, @function
5141 .section .gcc_except_table.foo,"a",@progbits
5144 .section .eh_frame,"a",@progbits
5147 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5148 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5149 | grep "gc-sections option ignored" > /dev/null; then
5150 gcc_cv_ld_eh_gc_sections=no
5151 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5152 | grep gcc_except_table > /dev/null; then
5153 gcc_cv_ld_eh_gc_sections=yes
5159 rm -f conftest.s conftest.o conftest
5163 # ??? This apparently exposes a binutils bug with PC-relative relocations.
5164 gcc_cv_ld_eh_gc_sections=no
5167 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
5168 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
5169 [Define if your linker supports garbage collection of
5170 sections in presence of EH frames.])
5172 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
5174 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
5175 gcc_cv_ld_eh_gc_sections_bug=no
5176 if test $in_tree_ld = yes ; then
5177 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
5178 && test $in_tree_ld_is_elf = yes; then
5179 gcc_cv_ld_eh_gc_sections_bug=yes
5181 elif test x$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
5182 gcc_cv_ld_eh_gc_sections_bug=yes
5183 cat > conftest.s <<EOF
5186 .type _start, @function
5189 .size _start, .-_start
5190 .section .text.startup.foo,"ax",@progbits
5191 .type foo, @function
5195 .section .gcc_except_table.foo,"a",@progbits
5198 .section .eh_frame,"a",@progbits
5201 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5202 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5203 | grep "gc-sections option ignored" > /dev/null; then
5205 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5206 | grep gcc_except_table > /dev/null; then
5207 gcc_cv_ld_eh_gc_sections_bug=no
5210 rm -f conftest.s conftest.o conftest
5212 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
5213 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
5214 [Define if your linker has buggy garbage collection of
5215 sections support when .text.startup.foo like sections are used.])
5217 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
5219 AC_MSG_CHECKING(linker for compressed debug sections)
5220 # gold/gld support compressed debug sections since binutils 2.19/2.21
5221 # In binutils 2.26, gld gained support for the ELF gABI format.
5222 if test $in_tree_ld = yes ; then
5223 gcc_cv_ld_compress_debug=0
5224 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 19 -o "$gcc_cv_gld_major_version" -gt 2 \
5225 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = yes; then
5226 gcc_cv_ld_compress_debug=2
5227 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5228 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 26 -o "$gcc_cv_gld_major_version" -gt 2 \
5229 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = no; then
5230 gcc_cv_ld_compress_debug=3
5231 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5232 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2 \
5233 && test $in_tree_ld_is_elf = yes; then
5234 gcc_cv_ld_compress_debug=1
5236 elif echo "$ld_ver" | grep GNU > /dev/null; then
5237 if test "$ld_vers_major" -lt 2 \
5238 || test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 21; then
5239 gcc_cv_ld_compress_debug=0
5240 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
5241 gcc_cv_ld_compress_debug=1
5243 gcc_cv_ld_compress_debug=3
5244 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5246 if test $ld_is_gold = yes; then
5247 gcc_cv_ld_compress_debug=2
5248 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5254 # Introduced in Solaris 11.2.
5255 if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then
5256 gcc_cv_ld_compress_debug=3
5257 gcc_cv_ld_compress_debug_option="-z compress-sections"
5259 gcc_cv_ld_compress_debug=0
5263 # Assume linkers other than GNU ld don't support compessed debug
5265 gcc_cv_ld_compress_debug=0
5270 AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug,
5271 [Define to the level of your linker's compressed debug section support.])
5272 AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option",
5273 [Define to the linker option to enable compressed debug sections.])
5274 AC_MSG_RESULT($gcc_cv_ld_compress_debug)
5276 if test x"$ld64_flag" = x"yes"; then
5278 # Set defaults for possibly untestable items.
5279 gcc_cv_ld64_export_dynamic=0
5281 if test "$build" = "$host"; then
5287 # On Darwin, because of FAT library support, it is often possible to execute
5288 # exes from compatible archs even when the host differs from the build system.
5289 case "$build","$host" in
5290 x86_64-*-darwin*,i?86-*-darwin* | powerpc64*-*-darwin*,powerpc*-*-darwin*)
5295 # If the configurer specified a minimum ld64 version to be supported, then use
5296 # that to determine feature support.
5297 if test x"${gcc_cv_ld64_version}" != x; then
5298 AC_MSG_CHECKING(ld64 major version)
5299 IFS=. read gcc_cv_ld64_major gcc_cv_ld64_minor <<< "${gcc_cv_ld64_version}"
5300 AC_MSG_RESULT($gcc_cv_ld64_major)
5301 if test "$gcc_cv_ld64_major" -ge 236; then
5302 gcc_cv_ld64_export_dynamic=1
5304 elif test -x "$gcc_cv_ld" -a "$darwin_try_test" -eq 1; then
5305 # If the version was not specified, try to find it.
5306 AC_MSG_CHECKING(linker version)
5307 if test x"${gcc_cv_ld64_version}" = x; then
5308 gcc_cv_ld64_version=`$gcc_cv_ld -v 2>&1 | grep ld64 | sed s/.*ld64-// | awk '{print $1}'`
5310 AC_MSG_RESULT($gcc_cv_ld64_version)
5312 AC_MSG_CHECKING(linker for -export_dynamic support)
5313 gcc_cv_ld64_export_dynamic=1
5314 if $gcc_cv_ld -export_dynamic < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then
5315 gcc_cv_ld64_export_dynamic=0
5317 AC_MSG_RESULT($gcc_cv_ld64_export_dynamic)
5320 if test x"${gcc_cv_ld64_version}" != x; then
5321 AC_DEFINE_UNQUOTED(LD64_VERSION, "${gcc_cv_ld64_version}",
5322 [Define to ld64 version.])
5325 AC_DEFINE_UNQUOTED(LD64_HAS_EXPORT_DYNAMIC, $gcc_cv_ld64_export_dynamic,
5326 [Define to 1 if ld64 supports '-export_dynamic'.])
5333 AC_CACHE_CHECK(linker --as-needed support,
5334 gcc_cv_ld_as_needed,
5335 [gcc_cv_ld_as_needed=no
5336 gcc_cv_ld_as_needed_option='--as-needed'
5337 gcc_cv_ld_no_as_needed_option='--no-as-needed'
5338 if test $in_tree_ld = yes ; then
5339 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5340 && test $in_tree_ld_is_elf = yes; then
5341 gcc_cv_ld_as_needed=yes
5343 elif test x$gcc_cv_ld != x; then
5344 # Check if linker supports --as-needed and --no-as-needed options
5345 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
5346 gcc_cv_ld_as_needed=yes
5349 # Solaris 2 ld always supports -z ignore/-z record.
5351 gcc_cv_ld_as_needed=yes
5352 gcc_cv_ld_as_needed_option="-z ignore"
5353 gcc_cv_ld_no_as_needed_option="-z record"
5358 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
5359 # dl_iterate_phdr, i.e. since Solaris 11.
5361 *-*-solaris2.1[[1-9]]*)
5363 i?86-*-* | x86_64-*-*)
5364 if echo "$ld_ver" | grep GNU > /dev/null; then
5365 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
5366 gcc_cv_ld_as_needed=no
5372 gcc_cv_ld_as_needed=no
5376 if test x"$gcc_cv_ld_as_needed" = xyes; then
5377 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
5378 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
5379 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
5380 [Define to the linker option to ignore unused dependencies.])
5381 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
5382 [Define to the linker option to keep unused dependencies.])
5385 AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities)
5386 saved_LDFLAGS="$LDFLAGS"
5387 for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do
5388 LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map"
5389 AC_LINK_IFELSE([int main(void) {return 0;}],
5390 [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no])
5392 LDFLAGS="$saved_LDFLAGS"
5393 if test "x$gcc_cv_ld_clearcap" = xyes; then
5394 AC_DEFINE([HAVE_LD_CLEARCAP], 1,
5395 [Define if the linker supports clearing hardware capabilities via mapfile.])
5396 AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map])
5398 AC_MSG_RESULT($gcc_cv_ld_clearcap)
5404 emul_name="-melf32lppc"
5407 emul_name="-melf32ppc"
5410 AC_CACHE_CHECK(linker .gnu.attributes long double support,
5412 [gcc_cv_ld_ppc_attr=no
5413 if test x"$ld_is_gold" = xyes; then
5414 gcc_cv_ld_ppc_attr=yes
5415 elif test $in_tree_ld = yes ; then
5416 if test "$gcc_cv_gld_major_version" -eq 2 \
5417 -a "$gcc_cv_gld_minor_version" -ge 28 \
5418 -o "$gcc_cv_gld_major_version" -gt 2; then
5419 gcc_cv_ld_ppc_attr=yes
5421 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5422 # check that merging the long double .gnu_attribute doesn't warn
5423 cat > conftest1.s <<EOF
5426 cat > conftest2.s <<EOF
5429 if $gcc_cv_as -a32 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5430 && $gcc_cv_as -a32 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5431 && $gcc_cv_ld $emul_name -r -o conftest.o conftest1.o conftest2.o > /dev/null 2> conftest.err \
5432 && test ! -s conftest.err; then
5433 gcc_cv_ld_ppc_attr=yes
5435 rm -f conftest.err conftest.o conftest1.o conftest2.o conftest1.s conftest2.s
5438 if test x$gcc_cv_ld_ppc_attr = xyes; then
5439 AC_DEFINE(HAVE_LD_PPC_GNU_ATTR_LONG_DOUBLE, 1,
5440 [Define if your PowerPC linker has .gnu.attributes long double support.])
5445 case "$target:$tm_file" in
5446 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
5449 emul_name="-melf64lppc"
5452 emul_name="-melf64ppc"
5455 emul_name="-melf64ppc_fbsd"
5458 AC_CACHE_CHECK(linker support for omitting dot symbols,
5459 gcc_cv_ld_no_dot_syms,
5460 [gcc_cv_ld_no_dot_syms=no
5461 if test x"$ld_is_gold" = xyes; then
5462 gcc_cv_ld_no_dot_syms=yes
5463 elif test $in_tree_ld = yes ; then
5464 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
5465 gcc_cv_ld_no_dot_syms=yes
5467 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5468 cat > conftest1.s <<EOF
5472 cat > conftest2.s <<EOF
5473 .section ".opd","aw"
5478 .quad .LEfoo,.TOC.@tocbase,0
5484 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5485 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5486 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
5487 gcc_cv_ld_no_dot_syms=yes
5489 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
5492 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
5493 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
5494 [Define if your PowerPC64 linker only needs function descriptor syms.])
5497 AC_CACHE_CHECK(linker large toc support,
5498 gcc_cv_ld_large_toc,
5499 [gcc_cv_ld_large_toc=no
5500 if test x"$ld_is_gold" = xyes; then
5501 gcc_cv_ld_large_toc=yes
5502 elif test $in_tree_ld = yes ; then
5503 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
5504 gcc_cv_ld_large_toc=yes
5506 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5507 cat > conftest.s <<EOF
5508 .section ".tbss","awT",@nobits
5514 addis 9,13,ie0@got@tprel@ha
5515 ld 9,ie0@got@tprel@l(9)
5517 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5518 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
5519 gcc_cv_ld_large_toc=yes
5521 rm -f conftest conftest.o conftest.s
5524 if test x"$gcc_cv_ld_large_toc" = xyes; then
5525 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5526 [Define if your PowerPC64 linker supports a large TOC.])
5529 AC_CACHE_CHECK(linker toc pointer alignment,
5530 gcc_cv_ld_toc_align,
5531 [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then
5532 cat > conftest.s <<EOF
5537 .section .data.rel.ro,"aw",@progbits
5542 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5543 && $gcc_cv_ld $emul_name -z norelro -o conftest conftest.o > /dev/null 2>&1; then
5544 gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'`
5546 rm -f conftest conftest.o conftest.s
5549 if test -n "$gcc_cv_ld_toc_align" && test $gcc_cv_ld_toc_align -gt 8; then
5550 AC_DEFINE_UNQUOTED(POWERPC64_TOC_POINTER_ALIGNMENT, $gcc_cv_ld_toc_align,
5551 [Define to .TOC. alignment forced by your linker.])
5558 AC_CACHE_CHECK(linker large toc support,
5559 gcc_cv_ld_large_toc,
5560 [gcc_cv_ld_large_toc=no
5561 if test x$gcc_cv_as != x ; then
5562 cat > conftest.s <<EOF
5572 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
5573 gcc_cv_ld_large_toc=yes
5575 rm -f conftest conftest.o conftest.s
5578 if test x"$gcc_cv_ld_large_toc" = xyes; then
5579 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5580 [Define if your PowerPC64 linker supports a large TOC.])
5585 AC_CACHE_CHECK(linker --build-id support,
5587 [gcc_cv_ld_buildid=no
5588 if test $in_tree_ld = yes ; then
5589 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5590 "$gcc_cv_gld_minor_version" -ge 18 -o \
5591 "$gcc_cv_gld_major_version" -gt 2 \
5592 && test $in_tree_ld_is_elf = yes; then
5593 gcc_cv_ld_buildid=yes
5595 elif test x$gcc_cv_ld != x; then
5596 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
5597 gcc_cv_ld_buildid=yes
5600 if test x"$gcc_cv_ld_buildid" = xyes; then
5601 AC_DEFINE(HAVE_LD_BUILDID, 1,
5602 [Define if your linker supports --build-id.])
5605 AC_ARG_ENABLE(linker-build-id,
5606 [AS_HELP_STRING([--enable-linker-build-id],
5607 [compiler will always pass --build-id to linker])],
5609 enable_linker_build_id=no)
5611 if test x"$enable_linker_build_id" = xyes; then
5612 if test x"$gcc_cv_ld_buildid" = xyes; then
5613 AC_DEFINE(ENABLE_LD_BUILDID, 1,
5614 [Define if gcc should always pass --build-id to linker.])
5616 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
5620 # In binutils 2.21, GNU ld gained support for new emulations fully
5621 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
5622 AC_CACHE_CHECK(linker *_sol2 emulation support,
5623 gcc_cv_ld_sol2_emulation,
5624 [gcc_cv_ld_sol2_emulation=no
5625 if test $in_tree_ld = yes ; then
5626 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5627 "$gcc_cv_gld_minor_version" -ge 21 -o \
5628 "$gcc_cv_gld_major_version" -gt 2 \
5629 && test $in_tree_ld_is_elf = yes; then
5630 gcc_cv_ld_sol2_emulation=yes
5632 elif test x$gcc_cv_ld != x; then
5633 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
5634 grep _sol2 > /dev/null; then
5635 gcc_cv_ld_sol2_emulation=yes
5638 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
5639 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
5640 [Define if your linker supports the *_sol2 emulations.])
5643 AC_CACHE_CHECK(linker --sysroot support,
5645 [gcc_cv_ld_sysroot=no
5646 if test $in_tree_ld = yes ; then
5647 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
5648 gcc_cv_ld_sysroot=yes
5650 elif test x$gcc_cv_ld != x; then
5651 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
5652 gcc_cv_ld_sysroot=yes
5655 if test x"$gcc_cv_ld_sysroot" = xyes; then
5656 AC_DEFINE(HAVE_LD_SYSROOT, 1,
5657 [Define if your linker supports --sysroot.])
5662 # Check for system-provided CRTs on Solaris 11.x and Solaris 12.
5663 AC_CACHE_CHECK([system-provided CRTs on Solaris],
5664 gcc_cv_solaris_crts,
5665 [gcc_cv_solaris_crts=no
5666 if test x$host != x$target; then
5667 if test "x$with_sysroot" = xyes; then
5668 target_sysroot="${test_exec_prefix}/${target_noncanonical}/sys-root"
5670 target_sysroot="${with_sysroot}"
5673 target_libdir="$target_sysroot/usr/lib"
5674 # At the time they were added, gcrt1.o became a symlink for backwards
5675 # compatibility on x86, while crt1.o was added on sparc, so check for that.
5677 i?86-*-solaris2* | x86_64-*-solaris2*)
5678 if test -h "$target_libdir/gcrt1.o"; then gcc_cv_solaris_crts=yes; fi
5681 if test -f "$target_libdir/crt1.o"; then gcc_cv_solaris_crts=yes; fi
5686 if test x$gcc_cv_solaris_crts = xyes; then
5687 AC_DEFINE(HAVE_SOLARIS_CRTS, 1,
5688 [Define if the system-provided CRTs are present on Solaris.])
5691 # Test for stack protector support in target C library.
5692 AC_CACHE_CHECK(__stack_chk_fail in target C library,
5693 gcc_cv_libc_provides_ssp,
5694 [gcc_cv_libc_provides_ssp=no
5697 # All versions of musl provide stack protector
5698 gcc_cv_libc_provides_ssp=yes;;
5699 *-*-linux* | *-*-kfreebsd*-gnu)
5700 # glibc 2.4 and later provides __stack_chk_fail and
5701 # either __stack_chk_guard, or TLS access to stack guard canary.
5702 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
5703 [if test -f $target_header_dir/features.h \
5704 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
5705 $target_header_dir/features.h > /dev/null; then
5706 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
5707 $target_header_dir/features.h > /dev/null && \
5708 test -f $target_header_dir/bits/uClibc_config.h && \
5709 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
5710 $target_header_dir/bits/uClibc_config.h > /dev/null; then
5711 gcc_cv_libc_provides_ssp=yes
5713 # all versions of Bionic support stack protector
5714 elif test -f $target_header_dir/sys/cdefs.h \
5715 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
5716 $target_header_dir/sys/cdefs.h > /dev/null; then
5717 gcc_cv_libc_provides_ssp=yes
5721 # Avoid complicated tests (see
5722 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
5723 # simply assert that glibc does provide this, which is true for all
5724 # realistically usable GNU/Hurd configurations.
5725 # All supported versions of musl provide it as well
5726 gcc_cv_libc_provides_ssp=yes;;
5727 *-*-darwin* | *-*-freebsd* | *-*-netbsd*)
5728 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
5729 [echo "no __stack_chk_fail on this target"])
5731 *) gcc_cv_libc_provides_ssp=no ;;
5734 if test x$gcc_cv_libc_provides_ssp = xyes; then
5735 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
5736 [Define if your target C library provides stack protector support])
5739 # Check whether --enable-default-ssp was given.
5740 AC_ARG_ENABLE(default-ssp,
5741 [AS_HELP_STRING([--enable-default-ssp],
5742 [enable Stack Smashing Protection as default])],[
5743 if test x$gcc_cv_libc_provides_ssp = xyes; then
5745 ia64*-*-*) enable_default_ssp=no ;;
5746 *) enable_default_ssp=$enableval ;;
5749 enable_default_ssp=no
5751 enable_default_ssp=no)
5752 if test x$enable_default_ssp = xyes ; then
5753 AC_DEFINE(ENABLE_DEFAULT_SSP, 1,
5754 [Define if your target supports default stack protector and it is enabled.])
5756 AC_SUBST([enable_default_ssp])
5758 # Test for <sys/sdt.h> on the target.
5759 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
5760 AC_MSG_CHECKING(sys/sdt.h in the target C library)
5762 if test -f $target_header_dir/sys/sdt.h; then
5764 AC_DEFINE(HAVE_SYS_SDT_H, 1,
5765 [Define if your target C library provides sys/sdt.h])
5767 AC_MSG_RESULT($have_sys_sdt_h)
5769 # Check if TFmode long double should be used by default or not.
5770 # Some glibc targets used DFmode long double, but with glibc 2.4
5771 # and later they can use TFmode.
5773 powerpc*-*-linux* | \
5777 AC_ARG_WITH(long-double-128,
5778 [AS_HELP_STRING([--with-long-double-128],
5779 [use 128-bit long double by default])],
5780 gcc_cv_target_ldbl128="$with_long_double_128",
5781 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
5782 [gcc_cv_target_ldbl128=no
5783 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
5784 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
5785 && gcc_cv_target_ldbl128=yes
5789 if test x$gcc_cv_target_ldbl128 = xyes; then
5790 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
5791 [Define if TFmode long double should be the default])
5794 # Check if the target LIBC supports exporting the AT_PLATFORM and AT_HWCAP
5795 # values in the TCB. Currently, only GLIBC 2.23 and later support this.
5796 gcc_cv_libc_provides_hwcap_in_tcb=no
5799 GCC_GLIBC_VERSION_GTE_IFELSE([2], [23], [gcc_cv_libc_provides_hwcap_in_tcb=yes], )
5802 if test x$gcc_cv_libc_provides_hwcap_in_tcb = xyes; then
5803 AC_DEFINE(TARGET_LIBC_PROVIDES_HWCAP_IN_TCB, 1,
5804 [Define if your target C Library provides the AT_HWCAP value in the TCB])
5807 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
5808 gcc_cv_target_dl_iterate_phdr=unknown
5810 # Restrict to Solaris 11+. While most of the Solaris 11 linker changes
5811 # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in
5812 # libdl there, both complicating its use and breaking compatibility
5813 # between Solaris 10 updates.
5814 *-*-solaris2.1[[1-9]]*)
5815 # <link.h> needs both a dl_iterate_phdr declaration and support for
5816 # compilation with largefile support.
5817 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
5818 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
5819 gcc_cv_target_dl_iterate_phdr=yes
5821 gcc_cv_target_dl_iterate_phdr=no
5824 *-*-dragonfly* | *-*-freebsd*)
5825 if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then
5826 gcc_cv_target_dl_iterate_phdr=yes
5828 gcc_cv_target_dl_iterate_phdr=no
5832 gcc_cv_target_dl_iterate_phdr=yes
5835 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
5836 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
5837 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
5838 [Define if your target C library provides the `dl_iterate_phdr' function.])
5840 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
5842 # We no longer support different GC mechanisms. Emit an error if
5843 # the user configures with --with-gc.
5845 [AS_HELP_STRING([--with-gc={page,zone}],
5846 [this option is not supported anymore. It used to choose
5847 the garbage collection mechanism to use with the compiler])],
5848 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
5851 # Libraries to use on the host. This will normally be set by the top
5852 # level Makefile. Here we simply capture the value for our Makefile.
5853 if test -z "${HOST_LIBS+set}"; then
5858 # Use the system's zlib library.
5861 dnl Very limited version of automake's enable-maintainer-mode
5863 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
5864 dnl maintainer-mode is disabled by default
5865 AC_ARG_ENABLE(maintainer-mode,
5866 [AS_HELP_STRING([--enable-maintainer-mode],
5867 [enable make rules and dependencies not useful
5868 (and sometimes confusing) to the casual installer])],
5869 maintainer_mode=$enableval,
5872 AC_MSG_RESULT($maintainer_mode)
5874 if test "$maintainer_mode" = "yes"; then
5881 dnl Whether to prevent multiple front-ends from linking at the same time
5883 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
5884 AC_ARG_ENABLE(link-mutex,
5885 [AS_HELP_STRING([--enable-link-mutex],
5886 [avoid linking multiple front-ends at once to avoid thrashing
5887 on the build machine])],
5888 do_link_mutex=$enableval,
5890 AC_MSG_RESULT($do_link_mutex)
5892 if test "$do_link_mutex" = "yes"; then
5897 AC_SUBST(DO_LINK_MUTEX)
5903 # Make empty files to contain the specs and options for each language.
5904 # Then add #include lines to for a compiler that has specs and/or options.
5910 # These (without "all_") are set in each config-lang.in.
5911 # `language' must be a single word so is spelled singularly.
5914 all_outputs='Makefile'
5915 # List of language makefile fragments.
5917 # Additional files for gengtype
5918 all_gtfiles="$target_gtfiles"
5920 # These are the languages that are set in --enable-languages,
5921 # and are available in the GCC tree.
5922 all_selected_languages=
5924 # Add the language fragments.
5925 # Languages are added via two mechanisms. Some information must be
5926 # recorded in makefile variables, these are defined in config-lang.in.
5927 # We accumulate them and plug them into the main Makefile.
5928 # The other mechanism is a set of hooks for each of the main targets
5929 # like `clean', `install', etc.
5931 language_hooks="Make-hooks"
5933 for lang in ${srcdir}/*/config-lang.in
5936 test "$lang" = "${srcdir}/*/config-lang.in" && continue
5938 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
5939 if test "x$lang_alias" = x
5941 echo "$lang doesn't set \$language." 1>&2
5944 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
5945 subdirs="$subdirs $subdir"
5947 # $gcc_subdir is where the gcc integration files are to be found
5948 # for a language, both for internal compiler purposes (compiler
5949 # sources implementing front-end to GCC tree converters), and for
5950 # build infrastructure purposes (Make-lang.in, etc.)
5952 # This will be <subdir> (relative to $srcdir) if a line like
5953 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
5954 # is found in <langdir>/config-lang.in, and will remain <langdir>
5957 # Except for the language alias (fetched above), the regular
5958 # "config-lang.in" contents are always retrieved from $gcc_subdir,
5959 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
5960 # only this and the language alias.
5962 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
5963 if [ "$gcc_subdir" = "" ]; then
5964 gcc_subdir="$subdir"
5967 case ",$enable_languages," in
5969 all_selected_languages="$all_selected_languages $lang_alias"
5970 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
5971 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
5983 . ${srcdir}/$gcc_subdir/config-lang.in
5984 if test "x$language" = x
5986 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
5991 case ",$enable_languages," in
5994 for i in $subdir_requires; do
5995 test -f "${srcdir}/$i/config-lang.in" && continue
6003 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
6004 if test -f $srcdir/$gcc_subdir/lang.opt; then
6005 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
6006 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
6008 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
6009 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
6011 all_languages="$all_languages $language"
6012 all_compilers="$all_compilers $compilers"
6013 all_outputs="$all_outputs $outputs"
6014 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
6015 case ",$enable_languages," in
6017 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
6019 AC_SUBST(enable_lto)
6026 for language in $all_selected_languages
6028 check_languages="$check_languages check-$language"
6031 # We link each language in with a set of hooks, reached indirectly via
6032 # lang.${target}. Only do so for selected languages.
6036 target_list="all.cross start.encap rest.encap tags \
6037 install-common install-man install-info install-pdf install-html dvi \
6038 pdf html uninstall info man srcextra srcman srcinfo \
6039 mostlyclean clean distclean maintainer-clean install-plugin"
6041 for t in $target_list
6044 for lang in $all_selected_languages
6048 echo "lang.$t: $x" >> Make-hooks
6052 # Option include files
6055 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
6056 option_includes="option-includes.mk"
6057 AC_SUBST_FILE(option_includes)
6065 echo "dir ." > .gdbinit
6066 echo "dir ${srcdir}" >> .gdbinit
6067 if test x$gdb_needs_out_file_path = xyes
6069 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
6071 if test "x$subdirs" != x; then
6074 echo "dir ${srcdir}/$s" >> .gdbinit
6077 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
6078 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
6080 # Put a breakpoint on __asan_report_error to help with debugging buffer
6083 *-fsanitize=address*)
6084 echo "source ${srcdir}/gdbasan.in" >> .gdbinit
6088 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
6089 AC_SUBST(gcc_tooldir)
6092 # Find a directory in which to install a shared libgcc.
6094 AC_ARG_ENABLE(version-specific-runtime-libs,
6095 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
6096 [specify that runtime libraries should be
6097 installed in a compiler-specific directory])])
6099 # Substitute configuration variables
6102 AC_SUBST(all_compilers)
6103 AC_SUBST(all_gtfiles)
6104 AC_SUBST(all_lang_makefrags)
6105 AC_SUBST(all_languages)
6106 AC_SUBST(all_selected_languages)
6107 AC_SUBST(build_exeext)
6108 AC_SUBST(build_install_headers_dir)
6109 AC_SUBST(build_xm_file_list)
6110 AC_SUBST(build_xm_include_list)
6111 AC_SUBST(build_xm_defines)
6112 AC_SUBST(build_file_translate)
6113 AC_SUBST(check_languages)
6114 AC_SUBST(cpp_install_dir)
6115 AC_SUBST(xmake_file)
6116 AC_SUBST(tmake_file)
6117 AC_SUBST(TM_ENDIAN_CONFIG)
6118 AC_SUBST(TM_MULTILIB_CONFIG)
6119 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
6120 AC_SUBST(extra_gcc_objs)
6121 AC_SUBST(user_headers_inc_next_pre)
6122 AC_SUBST(user_headers_inc_next_post)
6123 AC_SUBST(extra_headers_list)
6124 AC_SUBST(extra_objs)
6125 AC_SUBST(extra_programs)
6126 AC_SUBST(float_h_file)
6127 AC_SUBST(gcc_config_arguments)
6128 AC_SUBST(gcc_gxx_include_dir)
6129 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
6130 AC_SUBST(host_exeext)
6131 AC_SUBST(host_xm_file_list)
6132 AC_SUBST(host_xm_include_list)
6133 AC_SUBST(host_xm_defines)
6134 AC_SUBST(out_host_hook_obj)
6136 AC_SUBST(lang_opt_files)
6137 AC_SUBST(lang_specs_files)
6138 AC_SUBST(lang_tree_files)
6139 AC_SUBST(local_prefix)
6141 AC_SUBST(objc_boehm_gc)
6143 AC_SUBST(out_object_file)
6144 AC_SUBST(common_out_file)
6145 AC_SUBST(common_out_object_file)
6146 AC_SUBST(tm_file_list)
6147 AC_SUBST(tm_include_list)
6148 AC_SUBST(tm_defines)
6149 AC_SUBST(tm_p_file_list)
6150 AC_SUBST(tm_p_include_list)
6151 AC_SUBST(xm_file_list)
6152 AC_SUBST(xm_include_list)
6153 AC_SUBST(xm_defines)
6154 AC_SUBST(use_gcc_stdint)
6155 AC_SUBST(c_target_objs)
6156 AC_SUBST(cxx_target_objs)
6157 AC_SUBST(fortran_target_objs)
6158 AC_SUBST(target_cpu_default)
6160 AC_SUBST_FILE(language_hooks)
6163 if test x${build} = x${host} ; then
6164 if test x${host} = x${target} ; then
6165 echo "Links are now set up to build a native compiler for ${target}." 1>&2
6167 echo "Links are now set up to build a cross-compiler" 1>&2
6168 echo " from ${host} to ${target}." 1>&2
6171 if test x${host} = x${target} ; then
6172 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
6173 echo " for ${target}." 1>&2
6175 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
6176 echo " from ${host} to ${target}." 1>&2
6180 AC_ARG_VAR(GMPLIBS,[How to link GMP])
6181 AC_ARG_VAR(GMPINC,[How to find GMP include files])
6183 AC_ARG_VAR(ISLLIBS,[How to link isl])
6184 AC_ARG_VAR(ISLINC,[How to find isl include files])
6185 if test "x${ISLLIBS}" != "x" ; then
6186 AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.])
6189 # Check whether isl_options_set_schedule_serialize_sccs is available;
6190 # it's new in isl 0.15.
6191 if test "x${ISLLIBS}" != "x" ; then
6192 saved_CXXFLAGS="$CXXFLAGS"
6193 CXXFLAGS="$CXXFLAGS $ISLINC $GMPINC"
6195 LIBS="$LIBS $ISLLIBS $GMPLIBS"
6197 AC_MSG_CHECKING([Checking for isl_options_set_schedule_serialize_sccs])
6198 AC_TRY_LINK([#include <isl/schedule.h>],
6199 [isl_options_set_schedule_serialize_sccs (NULL, 0);],
6200 [ac_has_isl_options_set_schedule_serialize_sccs=yes],
6201 [ac_has_isl_options_set_schedule_serialize_sccs=no])
6202 AC_MSG_RESULT($ac_has_isl_options_set_schedule_serialize_sccs)
6205 CXXFLAGS="$saved_CXXFLAGS"
6207 if test x"$ac_has_isl_options_set_schedule_serialize_sccs" = x"yes"; then
6208 AC_DEFINE(HAVE_ISL_OPTIONS_SET_SCHEDULE_SERIALIZE_SCCS, 1,
6209 [Define if isl_options_set_schedule_serialize_sccs exists.])
6214 AC_SUBST(pluginlibs)
6215 AC_SUBST(enable_plugin)
6216 if test x"$enable_plugin" = x"yes"; then
6217 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
6221 # Enable --enable-host-shared
6222 AC_ARG_ENABLE(host-shared,
6223 [AS_HELP_STRING([--enable-host-shared],
6224 [build host code as shared libraries])],
6225 [PICFLAG=-fPIC], [PICFLAG=])
6226 AC_SUBST(enable_host_shared)
6230 AC_ARG_ENABLE(libquadmath-support,
6231 [AS_HELP_STRING([--disable-libquadmath-support],
6232 [disable libquadmath support for Fortran])],
6233 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
6234 ENABLE_LIBQUADMATH_SUPPORT=yes)
6235 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
6236 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
6237 [Define to 1 to enable libquadmath support])
6241 # Specify what hash style to use by default.
6242 AC_ARG_WITH([linker-hash-style],
6243 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
6244 [specify the linker hash style])],
6245 [case x"$withval" in
6247 LINKER_HASH_STYLE=sysv
6250 LINKER_HASH_STYLE=gnu
6253 LINKER_HASH_STYLE=both
6256 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
6259 [LINKER_HASH_STYLE=''])
6260 if test x"${LINKER_HASH_STYLE}" != x; then
6261 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
6262 [The linker hash style])
6265 # Specify what should be the default of -fdiagnostics-color option.
6266 AC_ARG_WITH([diagnostics-color],
6267 [AC_HELP_STRING([--with-diagnostics-color={never,auto,auto-if-env,always}],
6268 [specify the default of -fdiagnostics-color option
6269 auto-if-env stands for -fdiagnostics-color=auto if
6270 GCC_COLOR environment variable is present and
6271 -fdiagnostics-color=never otherwise])],
6272 [case x"$withval" in
6274 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_NO
6277 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO
6280 DIAGNOSTICS_COLOR_DEFAULT=-1
6283 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_YES
6286 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-color])
6289 [DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO])
6290 AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT,
6291 [The default for -fdiagnostics-color option])
6293 # Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit
6294 # of jit/jit-playback.c.
6295 cat > gcc-driver-name.h <<EOF
6296 #define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_BASEVER}${exeext}"
6299 # Check whether --enable-default-pie was given.
6300 AC_ARG_ENABLE(default-pie,
6301 [AS_HELP_STRING([--enable-default-pie],
6302 [enable Position Independent Executable as default])],
6303 enable_default_pie=$enableval,
6304 enable_default_pie=no)
6305 if test x$enable_default_pie = xyes ; then
6306 AC_DEFINE(ENABLE_DEFAULT_PIE, 1,
6307 [Define if your target supports default PIE and it is enabled.])
6309 AC_SUBST([enable_default_pie])
6311 # Check if -fno-PIE works.
6312 AC_CACHE_CHECK([for -fno-PIE option],
6314 [saved_CXXFLAGS="$CXXFLAGS"
6315 CXXFLAGS="$CXXFLAGS -fno-PIE"
6316 AC_COMPILE_IFELSE([int main(void) {return 0;}],
6317 [gcc_cv_c_no_fpie=yes],
6318 [gcc_cv_c_no_fpie=no])
6319 CXXFLAGS="$saved_CXXFLAGS"])
6320 if test "$gcc_cv_c_no_fpie" = "yes"; then
6321 NO_PIE_CFLAGS="-fno-PIE"
6323 AC_SUBST([NO_PIE_CFLAGS])
6325 # Check if -no-pie works.
6326 AC_CACHE_CHECK([for -no-pie option],
6328 [saved_LDFLAGS="$LDFLAGS"
6329 LDFLAGS="$LDFLAGS -no-pie"
6330 AC_LINK_IFELSE([int main(void) {return 0;}],
6331 [gcc_cv_no_pie=yes],
6333 LDFLAGS="$saved_LDFLAGS"])
6334 if test "$gcc_cv_no_pie" = "yes"; then
6335 NO_PIE_FLAG="-no-pie"
6337 AC_SUBST([NO_PIE_FLAG])
6339 # Check linker supports '-z bndplt'
6340 ld_bndplt_support=no
6341 AC_MSG_CHECKING(linker -z bndplt option)
6342 if test x"$ld_is_gold" = xno; then
6343 if test $in_tree_ld = yes ; then
6344 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6345 ld_bndplt_support=yes
6347 elif test x$gcc_cv_ld != x; then
6348 # Check if linker supports -a bndplt option
6349 if $gcc_cv_ld --help 2>/dev/null | grep -- '-z bndplt' > /dev/null; then
6350 ld_bndplt_support=yes
6354 if test x"$ld_bndplt_support" = xyes; then
6355 AC_DEFINE(HAVE_LD_BNDPLT_SUPPORT, 1,
6356 [Define if your linker supports -z bndplt])
6358 AC_MSG_RESULT($ld_bndplt_support)
6360 # Check linker supports '--push-state'/'--pop-state'
6361 ld_pushpopstate_support=no
6362 AC_MSG_CHECKING(linker --push-state/--pop-state options)
6363 if test x"$ld_is_gold" = xno; then
6364 if test $in_tree_ld = yes ; then
6365 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6366 ld_pushpopstate_support=yes
6368 elif test x$gcc_cv_ld != x; then
6369 # Check if linker supports --push-state/--pop-state options
6370 if $gcc_cv_ld --help 2>/dev/null | grep -- '--push-state' > /dev/null; then
6371 ld_pushpopstate_support=yes
6375 if test x"$ld_pushpopstate_support" = xyes; then
6376 AC_DEFINE(HAVE_LD_PUSHPOPSTATE_SUPPORT, 1,
6377 [Define if your linker supports --push-state/--pop-state])
6379 AC_MSG_RESULT($ld_pushpopstate_support)
6381 # Configure the subdirectories
6382 # AC_CONFIG_SUBDIRS($subdirs)
6384 # Create the Makefile
6385 # and configure language subdirectories
6386 AC_CONFIG_FILES($all_outputs)
6388 AC_CONFIG_COMMANDS([default],
6390 case ${CONFIG_HEADERS} in
6391 *auto-host.h:config.in*)
6394 # Make sure all the subdirs exist.
6395 for d in $subdirs doc build common c-family
6397 test -d $d || mkdir $d
6400 [subdirs='$subdirs'])