2 # Process this file with autoconf to generate a configuration script.
4 # Copyright (C) 1997-2017 Free Software Foundation, Inc.
6 #This file is part of GCC.
8 #GCC is free software; you can redistribute it and/or modify it under
9 #the terms of the GNU General Public License as published by the Free
10 #Software Foundation; either version 3, or (at your option) any later
13 #GCC is distributed in the hope that it will be useful, but WITHOUT
14 #ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 #FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
18 #You should have received a copy of the GNU General Public License
19 #along with GCC; see the file COPYING3. If not see
20 #<http://www.gnu.org/licenses/>.
22 # --------------------------------
23 # Initialization and sanity checks
24 # --------------------------------
28 AC_CONFIG_SRCDIR(tree.c)
29 AC_CONFIG_HEADER(auto-host.h:config.in)
31 gcc_version=`cat $srcdir/BASE-VER`
33 # Determine the host, build, and target systems
38 # Determine the noncanonical host name, for Ada.
41 # Determine the noncanonical target name, for directory use.
42 ACX_NONCANONICAL_TARGET
44 # Used for constructing correct paths for offload compilers.
45 real_target_noncanonical=${target_noncanonical}
48 # Determine the target- and build-specific subdirectories
51 # Set program_transform_name
54 # Check for bogus environment variables.
55 # Test if LIBRARY_PATH contains the notation for the current directory
56 # since this would lead to problems installing/building glibc.
57 # LIBRARY_PATH contains the current directory if one of the following
59 # - one of the terminals (":" and ";") is the first or last sign
60 # - two terminals occur directly after each other
61 # - the path contains an element with a dot in it
62 AC_MSG_CHECKING(LIBRARY_PATH variable)
64 case ${LIBRARY_PATH} in
65 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
66 library_path_setting="contains current directory"
69 library_path_setting="ok"
73 AC_MSG_RESULT($library_path_setting)
74 if test "$library_path_setting" != "ok"; then
76 *** LIBRARY_PATH shouldn't contain the current directory when
77 *** building gcc. Please change the environment variable
78 *** and run configure again.])
81 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
82 # since this would lead to problems installing/building glibc.
83 # GCC_EXEC_PREFIX contains the current directory if one of the following
85 # - one of the terminals (":" and ";") is the first or last sign
86 # - two terminals occur directly after each other
87 # - the path contains an element with a dot in it
88 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
90 case ${GCC_EXEC_PREFIX} in
91 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
92 gcc_exec_prefix_setting="contains current directory"
95 gcc_exec_prefix_setting="ok"
99 AC_MSG_RESULT($gcc_exec_prefix_setting)
100 if test "$gcc_exec_prefix_setting" != "ok"; then
102 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
103 *** building gcc. Please change the environment variable
104 *** and run configure again.])
111 # Specify the local prefix
113 AC_ARG_WITH(local-prefix,
114 [AS_HELP_STRING([--with-local-prefix=DIR],
115 [specifies directory to put local include])],
116 [case "${withval}" in
117 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
119 *) local_prefix=$with_local_prefix ;;
122 # Default local prefix if it is empty
123 if test x$local_prefix = x; then
124 local_prefix=/usr/local
127 AC_ARG_WITH([native-system-header-dir],
128 [ --with-native-system-header-dir=dir
129 use dir as the directory to look for standard
130 system header files in. Defaults to /usr/include.],
132 case ${with_native_system_header_dir} in
133 yes|no) AC_MSG_ERROR([bad value ${withval} given for --with-native-system-header-dir]) ;;
134 /* | [[A-Za-z]]:[[\\/]]*) ;;
135 *) AC_MSG_ERROR([--with-native-system-header-dir argument ${withval} must be an absolute directory]) ;;
137 configured_native_system_header_dir="${withval}"
138 ], [configured_native_system_header_dir=])
140 AC_ARG_WITH(build-sysroot,
141 [AS_HELP_STRING([--with-build-sysroot=sysroot],
142 [use sysroot as the system root during the build])],
143 [if test x"$withval" != x ; then
144 SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
146 [SYSROOT_CFLAGS_FOR_TARGET=])
147 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
149 if test "x$prefix" = xNONE; then
150 test_prefix=/usr/local
154 if test "x$exec_prefix" = xNONE; then
155 test_exec_prefix=$test_prefix
157 test_exec_prefix=$exec_prefix
161 [AS_HELP_STRING([[--with-sysroot[=DIR]]],
162 [search for usr/lib, usr/include, et al, within DIR])],
164 case ${with_sysroot} in
166 */) with_sysroot=`echo $with_sysroot | sed 's,/$,,'` ;;
168 case ${with_sysroot} in
169 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
170 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
173 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
174 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
176 case ${TARGET_SYSTEM_ROOT} in
177 "${test_prefix}"|"${test_prefix}/"*|\
178 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
179 '${prefix}'|'${prefix}/'*|\
180 '${exec_prefix}'|'${exec_prefix}/'*)
181 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
182 TARGET_SYSTEM_ROOT_DEFINE="$t"
187 TARGET_SYSTEM_ROOT_DEFINE=
188 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
190 AC_SUBST(TARGET_SYSTEM_ROOT)
191 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
192 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
194 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
195 # passed in by the toplevel make and thus we'd get different behavior
196 # depending on where we built the sources.
198 # Specify the g++ header file directory
199 AC_ARG_WITH(gxx-include-dir,
200 [AS_HELP_STRING([--with-gxx-include-dir=DIR],
201 [specifies directory to put g++ header files])],
202 [case "${withval}" in
203 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
205 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
208 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
209 if test x${gcc_gxx_include_dir} = x; then
210 if test x${enable_version_specific_runtime_libs} = xyes; then
211 gcc_gxx_include_dir='${libsubdir}/include/c++'
213 libstdcxx_incdir='include/c++/$(version)'
214 if test x$host != x$target; then
215 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
217 gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir"
221 gcc_gxx_include_dir_add_sysroot=0
222 if test "${with_sysroot+set}" = set; then
223 gcc_gxx_without_sysroot=`expr "${gcc_gxx_include_dir}" : "${with_sysroot}"'\(.*\)'`
224 if test "${gcc_gxx_without_sysroot}"; then
225 if test x${with_sysroot} != x/; then
226 gcc_gxx_include_dir="${gcc_gxx_without_sysroot}"
228 gcc_gxx_include_dir_add_sysroot=1
232 AC_ARG_WITH(cpp_install_dir,
233 [AC_HELP_STRING([--with-cpp-install-dir=DIR],
234 [install the user visible C preprocessor in DIR
235 (relative to PREFIX) as well as PREFIX/bin])],
236 [if test x$withval = xyes; then
237 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
238 elif test x$withval != xno; then
239 cpp_install_dir=$withval
242 # We would like to our source tree to be readonly. However when releases or
243 # pre-releases are generated, the flex/bison generated files as well as the
244 # various formats of manuals need to be included along with the rest of the
245 # sources. Therefore we have --enable-generated-files-in-srcdir to do
248 AC_MSG_CHECKING([whether to place generated files in the source directory])
249 dnl generated-files-in-srcdir is disabled by default
250 AC_ARG_ENABLE(generated-files-in-srcdir,
251 [AS_HELP_STRING([--enable-generated-files-in-srcdir],
252 [put copies of generated files in source dir
253 intended for creating source tarballs for users
254 without texinfo bison or flex])],
255 generated_files_in_srcdir=$enableval,
256 generated_files_in_srcdir=no)
258 AC_MSG_RESULT($generated_files_in_srcdir)
260 if test "$generated_files_in_srcdir" = "yes"; then
267 # -------------------
268 # Find default linker
269 # -------------------
273 [AS_HELP_STRING([--with-gnu-ld], [arrange to work with GNU ld])],
274 gnu_ld_flag="$with_gnu_ld",
278 *darwin*) ld64_flag=yes;; # Darwin can only use a ld64-compatible linker.
282 # With pre-defined ld
284 [AS_HELP_STRING([--with-ld], [arrange to use the specified ld (full pathname)])],
285 DEFAULT_LINKER="$with_ld")
286 if test x"${DEFAULT_LINKER+set}" = x"set"; then
287 if test ! -x "$DEFAULT_LINKER"; then
288 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
289 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
291 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep ld64- > /dev/null; then
294 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
295 [Define to enable the use of a default linker.])
298 AC_MSG_CHECKING([whether a default linker was specified])
299 if test x"${DEFAULT_LINKER+set}" = x"set"; then
300 if test x"$gnu_ld_flag" = x"no"; then
301 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
303 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
309 # With demangler in GNU ld
310 AC_ARG_WITH(demangler-in-ld,
311 [AS_HELP_STRING([--with-demangler-in-ld], [try to use demangler in GNU ld])],
312 demangler_in_ld="$with_demangler_in_ld",
315 # ----------------------
316 # Find default assembler
317 # ----------------------
321 [AS_HELP_STRING([--with-gnu-as], [arrange to work with GNU as])],
322 gas_flag="$with_gnu_as",
326 [AS_HELP_STRING([--with-as], [arrange to use the specified as (full pathname)])],
327 DEFAULT_ASSEMBLER="$with_as")
328 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
329 if test ! -x "$DEFAULT_ASSEMBLER"; then
330 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
331 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
334 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
335 [Define to enable the use of a default assembler.])
338 AC_MSG_CHECKING([whether a default assembler was specified])
339 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
340 if test x"$gas_flag" = x"no"; then
341 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
343 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
353 # If a non-executable a.out is present (e.g. created by GNU as above even if
354 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
355 # file, even when creating an executable, so an execution test fails.
356 # Remove possible default executable files to avoid this.
358 # FIXME: This really belongs into AC_PROG_CC and can be removed once
359 # Autoconf includes it.
360 rm -f a.out a.exe b.out
362 # Find the native compiler
365 ACX_PROG_GNAT([-I"$srcdir"/ada])
367 # Do configure tests with the C++ compiler, since that's what we build with.
370 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
371 # optimizations to be activated explicitly by the toplevel.
374 *) CFLAGS=`echo "$CFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" `
375 CXXFLAGS=`echo "$CXXFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" ` ;;
380 # Determine PICFLAG for target gnatlib.
381 GCC_PICFLAG_FOR_TARGET
382 AC_SUBST(PICFLAG_FOR_TARGET)
384 # -------------------------
385 # Check C compiler features
386 # -------------------------
388 AC_USE_SYSTEM_EXTENSIONS
394 # sizeof(char) is 1 by definition.
395 AC_CHECK_SIZEOF(void *)
396 AC_CHECK_SIZEOF(short)
398 AC_CHECK_SIZEOF(long)
399 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
401 if test x"$ac_cv_c_uint64_t" = x"no" -o x"$ac_cv_c_int64_t" = x"no"; then
402 AC_MSG_ERROR([uint64_t or int64_t not found])
405 # check what underlying integer type int64_t uses
406 AC_CACHE_CHECK(for int64_t underlying type, ac_cv_int64_t_type, [
407 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
411 template <typename T> struct X { };
413 struct X<long> { typedef long t; };
414 ]], [[X<int64_t>::t x;]])],[ac_cv_int64_t_type=long],[ac_cv_int64_t_type="long long"])])
415 if test "$ac_cv_int64_t_type" = "long"; then
416 AC_DEFINE(INT64_T_IS_LONG, 1,
417 [Define if int64_t uses long as underlying type.])
419 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
423 template <typename T> struct X { };
425 struct X<long long> { typedef long long t; };
426 ]], [[X<int64_t>::t x;]])],[],[AC_MSG_ERROR([error verifying int64_t uses long long])])
429 AC_CACHE_CHECK(for std::swap in <utility>, ac_cv_std_swap_in_utility, [
430 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
432 ]], [[int a, b; std::swap(a,b);]])],[ac_cv_std_swap_in_utility=yes],[ac_cv_std_swap_in_utility=no])])
433 if test $ac_cv_std_swap_in_utility = yes; then
434 AC_DEFINE(HAVE_SWAP_IN_UTILITY, 1,
435 [Define if <utility> defines std::swap.])
438 # Check whether compiler is affected by placement new aliasing bug (PR 29286).
439 # If the host compiler is affected by the bug, and we build with optimization
440 # enabled (which happens e.g. when cross-compiling), the pool allocator may
441 # get miscompiled. Use -fno-strict-aliasing to work around this problem.
442 # Since there is no reliable feature check for the presence of this bug,
443 # we simply use a GCC version number check. (This should never trigger for
444 # stages 2 or 3 of a native bootstrap.)
446 if test "$GCC" = yes; then
447 saved_CXXFLAGS="$CXXFLAGS"
449 # The following test compilation will succeed if and only if $CXX accepts
450 # -fno-strict-aliasing *and* is older than GCC 4.3.
451 CXXFLAGS="$CXXFLAGS -fno-strict-aliasing"
452 AC_MSG_CHECKING([whether $CXX is affected by placement new aliasing bug])
454 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)
455 #error compiler not affected by placement new aliasing bug
458 [AC_MSG_RESULT([yes]); aliasing_flags='-fno-strict-aliasing'],
459 [AC_MSG_RESULT([no])])
461 CXXFLAGS="$saved_CXXFLAGS"
463 AC_SUBST(aliasing_flags)
467 # ---------------------
468 # Warnings and checking
469 # ---------------------
471 # Check $CC warning features (if it's GCC).
472 # We want to use -pedantic, but we don't want warnings about
476 # * C++11 narrowing conversions in { }
477 # So, we only use -pedantic if we can disable those warnings.
479 # In stage 1, disable -Wformat warnings from old GCCs about new % codes
480 AC_ARG_ENABLE(build-format-warnings,
481 AS_HELP_STRING([--disable-build-format-warnings],[don't use -Wformat while building GCC]),
482 [],[enable_build_format_warnings=yes])
483 AS_IF([test $enable_build_format_warnings = no],
484 [wf_opt=-Wno-format],[wf_opt=])
485 ACX_PROG_CXX_WARNING_OPTS(
486 m4_quote(m4_do([-W -Wall -Wno-narrowing -Wwrite-strings ],
487 [-Wcast-qual $wf_opt])), [loose_warn])
488 ACX_PROG_CC_WARNING_OPTS(
489 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])),
491 ACX_PROG_CXX_WARNING_OPTS(
492 m4_quote(m4_do([-Wmissing-format-attribute ],
493 [-Woverloaded-virtual])), [strict_warn])
494 ACX_PROG_CC_WARNING_OPTS(
495 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
496 ACX_PROG_CXX_WARNING_ALMOST_PEDANTIC(
497 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
498 [-Wno-overlength-strings])), [strict_warn])
499 ACX_PROG_CXX_WARNINGS_ARE_ERRORS([manual], [strict_warn])
501 # The above macros do nothing if the compiler is not GCC. However, the
502 # Makefile has more goo to add other flags, so these variables are used
503 # to enable warnings only for GCC.
506 if test "x$GCC" = "xyes"; then
507 warn_cflags='$(GCC_WARN_CFLAGS)'
508 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
510 AC_SUBST(warn_cflags)
511 AC_SUBST(warn_cxxflags)
513 # Disable exceptions and RTTI if building with g++
514 ACX_PROG_CC_WARNING_OPTS(
515 m4_quote(m4_do([-fno-exceptions -fno-rtti -fasynchronous-unwind-tables])),
518 # Enable expensive internal checks
520 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
524 AC_ARG_ENABLE(checking,
525 [AS_HELP_STRING([[--enable-checking[=LIST]]],
526 [enable expensive run-time checks. With LIST,
527 enable only specific categories of checks.
528 Categories are: yes,no,all,none,release.
529 Flags are: assert,df,extra,fold,gc,gcac,gimple,misc,
530 rtlflag,rtl,runtime,tree,valgrind,types])],
531 [ac_checking_flags="${enableval}"],[
532 # Determine the default checks.
533 if test x$is_release = x ; then
534 ac_checking_flags=yes,extra
536 ac_checking_flags=release
538 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
539 for check in release $ac_checking_flags
542 # these set all the flags to specific states
543 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
544 ac_fold_checking= ; ac_gc_checking=1 ; ac_extra_checking= ;
545 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
546 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
547 ac_tree_checking=1 ; ac_valgrind_checking= ;
548 ac_types_checking=1 ;;
549 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
550 ac_fold_checking= ; ac_gc_checking= ; ac_extra_checking= ;
551 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
552 ac_rtlflag_checking= ; ac_runtime_checking= ;
553 ac_tree_checking= ; ac_valgrind_checking= ;
554 ac_types_checking= ;;
555 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
556 ac_fold_checking=1 ; ac_gc_checking=1 ; ac_extra_checking=1 ;
557 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
558 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
559 ac_tree_checking=1 ; ac_valgrind_checking= ;
560 ac_types_checking=1 ;;
561 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
562 ac_fold_checking= ; ac_gc_checking= ; ac_extra_checking= ;
563 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
564 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
565 ac_tree_checking= ; ac_valgrind_checking= ;
566 ac_types_checking= ;;
567 # these enable particular checks
568 assert) ac_assert_checking=1 ;;
569 df) ac_df_checking=1 ;;
570 extra) ac_extra_checking=1 ;;
571 fold) ac_fold_checking=1 ;;
572 gc) ac_gc_checking=1 ;;
573 gcac) ac_gc_always_collect=1 ;;
574 gimple) ac_gimple_checking=1 ;;
575 misc) ac_checking=1 ;;
576 rtl) ac_rtl_checking=1 ;;
577 rtlflag) ac_rtlflag_checking=1 ;;
578 runtime) ac_runtime_checking=1 ;;
579 tree) ac_tree_checking=1 ;;
580 types) ac_types_checking=1 ;;
581 valgrind) ac_valgrind_checking=1 ;;
582 *) AC_MSG_ERROR(unknown check category $check) ;;
588 if test x$ac_checking != x ; then
589 AC_DEFINE(CHECKING_P, 1,
590 [Define to 0/1 if you want more run-time sanity checks. This one gets a grab
591 bag of miscellaneous but relatively cheap checks.])
592 nocommon_flag=-fno-common
594 AC_DEFINE(CHECKING_P, 0)
596 AC_SUBST(nocommon_flag)
597 if test x$ac_extra_checking != x ; then
598 AC_DEFINE(ENABLE_EXTRA_CHECKING, 1,
599 [Define to 0/1 if you want extra run-time checking that might affect code
602 AC_DEFINE(ENABLE_EXTRA_CHECKING, 0)
604 if test x$ac_df_checking != x ; then
605 AC_DEFINE(ENABLE_DF_CHECKING, 1,
606 [Define if you want more run-time sanity checks for dataflow.])
608 if test x$ac_assert_checking != x ; then
609 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
610 [Define if you want assertions enabled. This is a cheap check.])
612 if test x$ac_gimple_checking != x ; then
613 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
614 [Define if you want operations on GIMPLE (the basic data structure of
615 the high-level optimizers) to be checked for dynamic type safety at
616 runtime. This is moderately expensive.])
618 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
619 if test x$ac_runtime_checking != x ; then
620 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
621 [Define if you want runtime assertions enabled. This is a cheap check.])
623 if test x$ac_tree_checking != x ; then
624 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
625 [Define if you want all operations on trees (the basic data
626 structure of the front ends) to be checked for dynamic type safety
627 at runtime. This is moderately expensive.
631 if test x$ac_types_checking != x ; then
632 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
633 [Define if you want all gimple types to be verified after gimplifiation.
637 AC_SUBST(TREECHECKING)
638 if test x$ac_rtl_checking != x ; then
639 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
640 [Define if you want all operations on RTL (the basic data structure
641 of the optimizer and back end) to be checked for dynamic type safety
642 at runtime. This is quite expensive.])
644 if test x$ac_rtlflag_checking != x ; then
645 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
646 [Define if you want RTL flag accesses to be checked against the RTL
647 codes that are supported for each access macro. This is relatively
650 if test x$ac_gc_checking != x ; then
651 AC_DEFINE(ENABLE_GC_CHECKING, 1,
652 [Define if you want the garbage collector to do object poisoning and
653 other memory allocation checks. This is quite expensive.])
655 if test x$ac_gc_always_collect != x ; then
656 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
657 [Define if you want the garbage collector to operate in maximally
658 paranoid mode, validating the entire heap and collecting garbage at
659 every opportunity. This is extremely expensive.])
661 if test x$ac_fold_checking != x ; then
662 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
663 [Define if you want fold checked that it never destructs its argument.
664 This is quite expensive.])
666 valgrind_path_defines=
669 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
670 dnl # an if statement. This was the source of very frustrating bugs
671 dnl # in converting to autoconf 2.5x!
672 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
674 # It is certainly possible that there's valgrind but no valgrind.h.
675 # GCC relies on making annotations so we must have both.
676 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
677 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
678 [[#include <valgrind/memcheck.h>
679 #ifndef VALGRIND_DISCARD
680 #error VALGRIND_DISCARD not defined
682 [gcc_cv_header_valgrind_memcheck_h=yes],
683 [gcc_cv_header_valgrind_memcheck_h=no])
684 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
685 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
686 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
687 [[#include <memcheck.h>
688 #ifndef VALGRIND_DISCARD
689 #error VALGRIND_DISCARD not defined
691 [gcc_cv_header_memcheck_h=yes],
692 [gcc_cv_header_memcheck_h=no])
693 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
694 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
695 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
696 [Define if valgrind's valgrind/memcheck.h header is installed.])
698 if test $gcc_cv_header_memcheck_h = yes; then
699 AC_DEFINE(HAVE_MEMCHECK_H, 1,
700 [Define if valgrind's memcheck.h header is installed.])
703 if test x$ac_valgrind_checking != x ; then
704 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
705 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
706 if test "x$valgrind_path" = "x" \
707 || (test $have_valgrind_h = no \
708 && test $gcc_cv_header_memcheck_h = no \
709 && test $gcc_cv_header_valgrind_memcheck_h = no); then
710 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
712 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
713 valgrind_command="$valgrind_path -q"
714 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
715 [Define if you want to run subprograms and generated programs
716 through valgrind (a memory checker). This is extremely expensive.])
718 AC_SUBST(valgrind_path_defines)
719 AC_SUBST(valgrind_command)
721 # Enable code coverage collection
722 AC_ARG_ENABLE(coverage,
723 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
724 [enable compiler's code coverage collection.
725 Use to measure compiler performance and locate
726 unused parts of the compiler. With LEVEL, specify
727 optimization. Values are opt, noopt,
729 [case "${enableval}" in
731 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
734 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
737 # a.k.a. --disable-coverage
741 AC_MSG_ERROR(unknown coverage setting $enableval)
745 AC_SUBST(coverage_flags)
747 AC_ARG_ENABLE(gather-detailed-mem-stats,
748 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
749 [enable detailed memory allocation stats gathering])], [],
750 [enable_gather_detailed_mem_stats=no])
751 gather_stats=`if test $enable_gather_detailed_mem_stats != no; then echo 1; else echo 0; fi`
752 AC_DEFINE_UNQUOTED(GATHER_STATISTICS, $gather_stats,
753 [Define to enable detailed memory allocation stats gathering.])
755 AC_ARG_ENABLE(valgrind-annotations,
756 [AS_HELP_STRING([--enable-valgrind-annotations],
757 [enable valgrind runtime interaction])], [],
758 [enable_valgrind_annotations=no])
759 if test x$enable_valgrind_annotations != xno \
760 || test x$ac_valgrind_checking != x; then
761 if (test $have_valgrind_h = no \
762 && test $gcc_cv_header_memcheck_h = no \
763 && test $gcc_cv_header_valgrind_memcheck_h = no); then
764 AC_MSG_ERROR([*** Can't find valgrind/memcheck.h, memcheck.h or valgrind.h])
766 AC_DEFINE(ENABLE_VALGRIND_ANNOTATIONS, 1,
767 [Define to get calls to the valgrind runtime enabled.])
770 # -------------------------------
771 # Miscenalleous configure options
772 # -------------------------------
776 [AS_HELP_STRING([--with-stabs],
777 [arrange to use stabs instead of host debug format])],
781 # Determine whether or not multilibs are enabled.
782 AC_ARG_ENABLE(multilib,
783 [AS_HELP_STRING([--enable-multilib],
784 [enable library support for multiple ABIs])],
785 [], [enable_multilib=yes])
786 AC_SUBST(enable_multilib)
788 # Determine whether or not multiarch is enabled.
789 AC_ARG_ENABLE(multiarch,
790 [AS_HELP_STRING([--enable-multiarch],
791 [enable support for multiarch paths])],
792 [case "${enableval}" in
793 yes|no|auto) enable_multiarch=$enableval;;
794 *) AC_MSG_ERROR(bad value ${enableval} given for --enable-multiarch option) ;;
795 esac], [enable_multiarch=auto])
796 if test x${enable_multiarch} = xauto; then
797 if test x${with_native_system_header_dir} != x; then
798 ma_msg_suffix=", disabled auto check (configured with --native-system-header-dir)"
801 if test x$host != x$target && test "x$with_sysroot" = x; then
802 ma_msg_suffix=", disabled auto check (cross build configured without --with-sysroot)"
806 AC_MSG_CHECKING(for multiarch configuration)
807 AC_SUBST(enable_multiarch)
808 AC_MSG_RESULT($enable_multiarch$ma_msg_suffix)
810 # needed for setting the multiarch name for soft-float/hard-float ABIs
814 # Enable __cxa_atexit for C++.
815 AC_ARG_ENABLE(__cxa_atexit,
816 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
819 # Enable C extension for decimal float if target supports it.
820 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
822 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
823 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
824 [Define to 1 to enable decimal float extension to C.])
826 # Use default_decimal_float for dependency.
827 enable_decimal_float=$default_decimal_float
829 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
830 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
831 [Define to 1 to specify that we are using the BID decimal floating
832 point format instead of DPD])
834 # Enable C extension for fixed-point arithmetic.
835 AC_ARG_ENABLE(fixed-point,
836 [AS_HELP_STRING([--enable-fixed-point],
837 [enable fixed-point arithmetic extension to C])],
842 enable_fixed_point=yes
846 enable_fixed_point=yes
849 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
850 enable_fixed_point=no
854 AC_SUBST(enable_fixed_point)
856 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
857 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
858 [Define to 1 to enable fixed-point arithmetic extension to C.])
861 # Pass with no value to take the default
862 # Pass with a value to specify a thread package
863 AC_ARG_ENABLE(threads,
864 [AS_HELP_STRING([[--enable-threads[=LIB]]],
865 [enable thread usage for target GCC,
866 using LIB thread package])],,
870 [AS_HELP_STRING([--enable-tls],
871 [enable or disable generation of tls code
872 overriding the assembler check for tls support])],
876 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
877 Valid choices are 'yes' and 'no'.]) ;;
881 AC_ARG_ENABLE(vtable-verify,
882 [AS_HELP_STRING([--enable-vtable-verify],
883 [enable vtable verification feature])],,
884 [enable_vtable_verify=no])
885 vtable_verify=`if test x$enable_vtable_verify = xyes; then echo 1; else echo 0; fi`
886 AC_DEFINE_UNQUOTED(ENABLE_VTABLE_VERIFY, $vtable_verify,
887 [Define 0/1 if vtable verification feature is enabled.])
889 AC_ARG_ENABLE(objc-gc,
890 [AS_HELP_STRING([--enable-objc-gc],
891 [enable the use of Boehm's garbage collector with
892 the GNU Objective-C runtime])],
893 if test x$enable_objc_gc = xno; then
901 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
902 dwarf2="$with_dwarf2",
905 AC_ARG_ENABLE(shared,
906 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
908 case $enable_shared in
912 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
913 for pkg in $enableval; do
914 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
921 ], [enable_shared=yes])
922 AC_SUBST(enable_shared)
925 [AS_HELP_STRING([--with-specs=SPECS],
926 [add SPECS to driver command-line processing])],
927 [CONFIGURE_SPECS=$withval],
930 AC_SUBST(CONFIGURE_SPECS)
932 ACX_PKGVERSION([GCC])
933 ACX_BUGURL([https://gcc.gnu.org/bugs/])
935 # Sanity check enable_languages in case someone does not run the toplevel
936 # configure # script.
937 AC_ARG_ENABLE(languages,
938 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
939 [case ,${enable_languages}, in
941 # go safe -- we cannot be much sure without the toplevel
943 # analysis of which target libs are present and usable
947 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
952 enable_languages=c,${enable_languages}
955 [enable_languages=c])
957 if test x"$enable_as_accelerator_for" != x; then
958 AC_DEFINE(ACCEL_COMPILER, 1,
959 [Define if this compiler should be built as the offload target compiler.])
960 enable_as_accelerator=yes
963 # In this case we expect offload compiler to be built as native, so we
964 # need to rename the driver to avoid clashes with host's drivers.
965 program_transform_name="s&^&${target}-&" ;;
967 sedscript="s#${target_noncanonical}#${enable_as_accelerator_for}-accel-${target_noncanonical}#"
968 program_transform_name=`echo $program_transform_name | sed $sedscript`
969 accel_dir_suffix=/accel/${target_noncanonical}
970 real_target_noncanonical=${enable_as_accelerator_for}
972 AC_SUBST(enable_as_accelerator)
973 AC_SUBST(real_target_noncanonical)
974 AC_SUBST(accel_dir_suffix)
976 for tgt in `echo $enable_offload_targets | sed 's/,/ /g'`; do
977 tgt=`echo $tgt | sed 's/=.*//'`
979 if echo "$tgt" | grep "^hsa" > /dev/null ; then
985 if test x"$offload_targets" = x; then
988 offload_targets="$offload_targets,$tgt"
991 AC_DEFINE_UNQUOTED(OFFLOAD_TARGETS, "$offload_targets",
992 [Define to offload targets, separated by commas.])
993 if test x"$enable_offloading" != x; then
994 AC_DEFINE(ENABLE_OFFLOADING, 1,
995 [Define this to enable support for offloading.])
997 AC_DEFINE(ENABLE_OFFLOADING, 0,
998 [Define this to enable support for offloading.])
1001 if test x"$enable_hsa" = x1 ; then
1002 AC_DEFINE(ENABLE_HSA, 1,
1003 [Define this to enable support for generating HSAIL.])
1006 AC_ARG_WITH(multilib-list,
1007 [AS_HELP_STRING([--with-multilib-list], [select multilibs (AArch64, SH and x86-64 only)])],
1009 with_multilib_list=default)
1011 # -------------------------
1012 # Checks for other programs
1013 # -------------------------
1017 # Find some useful tools
1019 # We need awk to create options.c and options.h.
1020 # Bail out if it's missing.
1022 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
1029 AC_SUBST(ranlib_flags)
1033 # See if cmp has --ignore-initial.
1034 gcc_AC_PROG_CMP_IGNORE_INITIAL
1036 # See if we have the mktemp command.
1037 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
1039 # See if makeinfo has been installed and is modern enough
1040 # that we can use it.
1041 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
1042 [GNU texinfo.* \([0-9][0-9.]*\)],
1043 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
1044 if test $gcc_cv_prog_makeinfo_modern = no; then
1046 *** Makeinfo is missing or too old.
1047 *** Info documentation will not be built.])
1052 AC_SUBST(BUILD_INFO)
1054 # Is pod2man recent enough to regenerate manpages?
1055 AC_MSG_CHECKING([for recent Pod::Man])
1056 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
1058 GENERATED_MANPAGES=generated-manpages
1063 AC_SUBST(GENERATED_MANPAGES)
1065 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
1068 dnl Don't use AC_PROG_LEX; we insist on flex.
1069 dnl LEXLIB is not useful in gcc.
1070 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
1073 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
1075 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
1076 # check for build == host before using them.
1079 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
1080 && test -d ../binutils ; then
1081 NM='${objdir}/../binutils/nm-new'
1083 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
1087 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
1088 && test -d ../binutils ; then
1089 AR='${objdir}/../binutils/ar'
1091 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
1094 # The jit documentation looks better if built with sphinx, but can be
1095 # built with texinfo if sphinx is not available.
1096 # Set "doc_build_sys" to "sphinx" or "texinfo" accordingly.
1097 AC_CHECK_PROG(doc_build_sys, sphinx-build, sphinx, texinfo)
1099 # --------------------
1100 # Checks for C headers
1101 # --------------------
1103 # Need to reject headers which give warnings, so that the -Werror bootstrap
1104 # works later. *sigh* This needs to come before all header checks.
1111 AC_HEADER_TIOCGWINSZ
1112 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
1113 fcntl.h ftw.h unistd.h sys/file.h sys/time.h sys/mman.h \
1114 sys/resource.h sys/param.h sys/times.h sys/stat.h \
1115 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
1117 # Check for thread headers.
1118 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
1119 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
1121 # These tests can't be done till we know if we have limits.h.
1125 # ----------------------
1126 # Checks for C++ headers
1127 # ----------------------
1129 dnl Autoconf will give an error in the configure script if there is no
1130 dnl C++ preprocessor. Hack to prevent that.
1131 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
1133 m4_popdef([AC_MSG_ERROR])[]dnl
1135 AC_CHECK_HEADERS(unordered_map)
1136 AC_CHECK_HEADERS(tr1/unordered_map)
1137 AC_CHECK_HEADERS(ext/hash_map)
1140 # Dependency checking.
1144 AC_CONFIG_COMMANDS([gccdepdir],[
1145 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR
1146 for lang in $subdirs c-family common
1148 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs $lang/$DEPDIR
1149 done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR])
1151 ZW_PROG_COMPILER_DEPENDENCIES([CXX])
1158 # These libraries may be used by collect2.
1159 # We may need a special search path to get them linked.
1160 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
1162 for libs in '' -lld -lmld \
1163 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
1164 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1167 AC_TRY_LINK_FUNC(ldopen,
1168 [gcc_cv_collect2_libs="$libs"; break])
1171 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1172 case $gcc_cv_collect2_libs in
1174 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1176 AC_SUBST(COLLECT2_LIBS)
1178 # When building Ada code on Alpha, we need exc_resume which is usually in
1179 # -lexc. So test for it.
1182 AC_SEARCH_LIBS(exc_resume, exc)
1185 AC_SUBST(GNAT_LIBEXC)
1187 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1190 AC_SEARCH_LIBS(kstat_open, kstat)
1191 EXTRA_GCC_LIBS="$LIBS"
1193 AC_SUBST(EXTRA_GCC_LIBS)
1195 # Some systems put ldexp and frexp in libm instead of libc; assume
1196 # they're both in the same place. jcf-dump needs them.
1199 AC_SEARCH_LIBS(ldexp, m)
1204 # Use <inttypes.h> only if it exists,
1205 # doesn't clash with <sys/types.h>, declares intmax_t and defines
1207 AC_MSG_CHECKING(for inttypes.h)
1208 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1209 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1210 [[#define __STDC_FORMAT_MACROS
1211 #include <sys/types.h>
1212 #include <inttypes.h>]],
1217 [gcc_cv_header_inttypes_h=yes],
1218 [gcc_cv_header_inttypes_h=no])])
1219 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1220 if test $gcc_cv_header_inttypes_h = yes; then
1221 AC_DEFINE(HAVE_INTTYPES_H, 1,
1222 [Define if you have a working <inttypes.h> header file.])
1225 dnl Disabled until we have a complete test for buggy enum bitfields.
1226 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1228 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1229 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1230 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1231 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1232 putchar_unlocked putc_unlocked)
1233 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoq \
1234 popen sysconf strsignal getrusage nl_langinfo \
1235 gettimeofday mbstowcs wcswidth mmap setlocale \
1236 gcc_UNLOCKED_FUNCS madvise)
1238 if test x$ac_cv_func_mbstowcs = xyes; then
1239 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1240 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1246 [gcc_cv_func_mbstowcs_works=yes],
1247 [gcc_cv_func_mbstowcs_works=no],
1248 [gcc_cv_func_mbstowcs_works=yes])])
1249 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1250 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1251 [Define this macro if mbstowcs does not crash when its
1252 first argument is NULL.])
1256 AC_CHECK_TYPE(ssize_t, int)
1257 AC_CHECK_TYPE(caddr_t, char *)
1259 GCC_AC_FUNC_MMAP_BLACKLIST
1263 # Under VMS, vfork works very differently than on Unix. The standard test
1264 # won't work, and it isn't easily adaptable. It makes more sense to
1266 ac_cv_func_vfork_works=yes
1273 # Until we have in-tree GNU iconv:
1275 if test -f "$LTLIBICONV"; then
1276 LIBICONV_DEP=$LTLIBICONV
1278 AC_SUBST(LIBICONV_DEP)
1284 # We will need to find libiberty.h and ansidecl.h
1285 saved_CFLAGS="$CFLAGS"
1286 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1287 saved_CXXFLAGS="$CXXFLAGS"
1288 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1290 # gcc_AC_CHECK_DECLS doesn't support overloaded functions, so use the
1291 # normal autoconf function for these. But force definition of
1292 # HAVE_DECL_BASENAME like gcc_AC_CHECK_DECLS does, to suppress the bizarre
1293 # basename handling in libiberty.h.
1294 AC_CHECK_DECLS([basename(const char*), strstr(const char*,const char*)], , ,[
1295 #undef HAVE_DECL_BASENAME
1296 #define HAVE_DECL_BASENAME 1
1297 #include "ansidecl.h"
1298 #include "system.h"])
1300 gcc_AC_CHECK_DECLS(getenv atol atoll asprintf sbrk abort atof getcwd getwd \
1301 madvise stpcpy strnlen strsignal strverscmp \
1302 strtol strtoul strtoll strtoull setenv unsetenv \
1303 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1304 free getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1305 #include "ansidecl.h"
1306 #include "system.h"])
1308 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1309 #include "ansidecl.h"
1311 #ifdef HAVE_SYS_RESOURCE_H
1312 #include <sys/resource.h>
1316 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1317 #include "ansidecl.h"
1319 #ifdef HAVE_SYS_RESOURCE_H
1320 #include <sys/resource.h>
1322 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1323 [Define to `long' if <sys/resource.h> doesn't define.])])
1325 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1326 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1327 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1328 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1329 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1330 #include "ansidecl.h"
1339 gcc_AC_CHECK_DECLS(times, , ,[
1340 #include "ansidecl.h"
1342 #ifdef HAVE_SYS_TIMES_H
1343 #include <sys/times.h>
1347 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1348 #include "ansidecl.h"
1353 # More time-related stuff.
1354 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1355 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1356 #include "ansidecl.h"
1358 #ifdef HAVE_SYS_TIMES_H
1359 #include <sys/times.h>
1361 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1362 if test $ac_cv_struct_tms = yes; then
1363 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1364 [Define if <sys/times.h> defines struct tms.])
1367 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1368 # revisit after autoconf 2.50.
1369 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1370 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1371 #include "ansidecl.h"
1373 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1374 if test $gcc_cv_type_clock_t = yes; then
1375 AC_DEFINE(HAVE_CLOCK_T, 1,
1376 [Define if <time.h> defines clock_t.])
1379 # Check if F_SETLKW is supported by fcntl.
1380 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1381 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1382 #include <fcntl.h>]], [[
1388 return fcntl (1, F_SETLKW, &fl);]])],
1389 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1390 if test $ac_cv_f_setlkw = yes; then
1391 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1392 [Define if F_SETLKW supported by fcntl.])
1395 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1396 CFLAGS="$saved_CFLAGS"
1397 CXXFLAGS="$saved_CXXFLAGS"
1399 # mkdir takes a single argument on some systems.
1400 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1408 # With Setjmp/Longjmp based exception handling.
1409 AC_ARG_ENABLE(sjlj-exceptions,
1410 [AS_HELP_STRING([--enable-sjlj-exceptions],
1411 [arrange to use setjmp/longjmp exception handling])],
1414 if test $enableval != yes; then
1415 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1420 force_sjlj_exceptions=yes],
1423 force_sjlj_exceptions=yes
1427 force_sjlj_exceptions=yes
1431 force_sjlj_exceptions=no
1434 if test $force_sjlj_exceptions = yes; then
1435 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1436 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1437 [Define 0/1 to force the choice for exception handling model.])
1440 # --------------------------------------------------------
1441 # Build, host, and target specific configuration fragments
1442 # --------------------------------------------------------
1444 # Collect build-machine-specific information.
1445 . ${srcdir}/config.build
1447 # Collect host-machine-specific information.
1448 . ${srcdir}/config.host
1452 # Collect target-machine-specific information.
1453 . ${srcdir}/config.gcc
1455 extra_objs="${host_extra_objs} ${extra_objs}"
1456 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1458 # Default the target-machine variables that were not explicitly set.
1459 if test x"$tm_file" = x
1460 then tm_file=$cpu_type/$cpu_type.h; fi
1462 if test x"$extra_headers" = x
1463 then extra_headers=; fi
1465 if test x$md_file = x
1466 then md_file=$cpu_type/$cpu_type.md; fi
1468 if test x$out_file = x
1469 then out_file=$cpu_type/$cpu_type.c; fi
1471 if test x"$tmake_file" = x
1472 then tmake_file=$cpu_type/t-$cpu_type
1475 # Support --enable-initfini-array.
1476 if test x$enable_initfini_array != xno; then
1477 tm_file="${tm_file} initfini-array.h"
1480 if test x"$dwarf2" = xyes
1481 then tm_file="$tm_file tm-dwarf2.h"
1484 # Say what files are being used for the output code and MD file.
1485 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1486 echo "Using \`$srcdir/config/$md_file' as machine description file."
1488 # If any of the xm_file variables contain nonexistent files, warn
1489 # about them and drop them.
1492 for x in $build_xm_file; do
1493 if test -f $srcdir/config/$x
1495 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1501 for x in $host_xm_file; do
1502 if test -f $srcdir/config/$x
1504 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1510 for x in $xm_file; do
1511 if test -f $srcdir/config/$x
1513 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1519 for f in $tm_file; do
1522 if test $count = ax; then
1523 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1525 echo "Using the following target machine macro files:"
1526 for f in $tm_file; do
1527 echo " $srcdir/config/$f"
1531 if test x$use_long_long_for_widest_fast_int = xyes; then
1532 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1533 [Define to 1 if the 'long long' type is wider than 'long' but still
1534 efficiently supported by the host hardware.])
1537 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1538 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1540 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1541 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1544 for f in $host_xm_file; do
1547 if test $count = a; then
1549 elif test $count = ax; then
1550 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1552 echo "Using the following host machine macro files:"
1553 for f in $host_xm_file; do
1554 echo " $srcdir/config/$f"
1557 echo "Using ${out_host_hook_obj} for host machine hooks."
1559 if test "$host_xm_file" != "$build_xm_file"; then
1561 for f in $build_xm_file; do
1564 if test $count = a; then
1566 elif test $count = ax; then
1567 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1569 echo "Using the following build machine macro files:"
1570 for f in $build_xm_file; do
1571 echo " $srcdir/config/$f"
1576 if test -n "$configured_native_system_header_dir"; then
1577 native_system_header_dir=$configured_native_system_header_dir
1579 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1580 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1584 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1585 gcc_cv_mcontext_underscores,
1587 #include <sys/cdefs.h>
1588 #include <sys/signal.h>
1589 #include <ucontext.h>
1590 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1592 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1593 if test $gcc_cv_mcontext_underscores = yes; then
1594 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1595 [mcontext_t fields start with __])
1604 # Check if a valid thread package
1605 case ${enable_threads} in
1608 target_thread_file='single'
1612 target_thread_file='single'
1614 aix | dce | lynx | mipssde | posix | rtems | \
1615 single | tpf | vxworks | win32)
1616 target_thread_file=${enable_threads}
1619 echo "${enable_threads} is an unknown thread package" 1>&2
1624 if test x${thread_file} = x; then
1625 # No thread file set by target-specific clauses in config.gcc,
1626 # so use file chosen by default logic above
1627 thread_file=${target_thread_file}
1635 if test x$enable___cxa_atexit = xyes || \
1636 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1637 if test x$host = x$target; then
1639 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1640 # keyed to flag_use_cxa_atexit
1648 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1649 [echo "__cxa_atexit can't be enabled on this target"])
1653 # We can't check for __cxa_atexit when building a cross, so assume
1657 if test x$use_cxa_atexit = xyes; then
1658 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1659 [Define if you want to use __cxa_atexit, rather than atexit, to
1660 register C++ destructors for local statics and global objects.
1661 This is essential for fully standards-compliant handling of
1662 destructors, but requires __cxa_atexit in libc.])
1666 # Look for a file containing extra machine modes.
1667 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1668 extra_modes_file='$(srcdir)'/config/${extra_modes}
1669 AC_SUBST(extra_modes_file)
1670 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1671 [Define to the name of a file containing a list of extra machine modes
1672 for this architecture.])
1675 # Convert extra_options into a form suitable for Makefile use.
1678 for f in $extra_options; do
1679 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1680 all_opt_files="$all_opt_files $srcdir/config/$f"
1682 AC_SUBST(extra_opt_files)
1684 # auto-host.h is the file containing items generated by autoconf and is
1685 # the first file included by config.h.
1686 # If host=build, it is correct to have bconfig include auto-host.h
1687 # as well. If host!=build, we are in error and need to do more
1688 # work to find out the build config parameters.
1689 if test x$host = x$build
1691 build_auto=auto-host.h
1693 # We create a subdir, then run autoconf in the subdir.
1694 # To prevent recursion we set host and build for the new
1695 # invocation of configure to the build for this invocation
1702 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1703 *) realsrcdir=../${srcdir};;
1705 # Clearing GMPINC is necessary to prevent host headers being
1706 # used by the build compiler. Defining GENERATOR_FILE stops
1707 # system.h from including gmp.h.
1708 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1709 CXX="${CXX_FOR_BUILD}" CXXFLAGS="${CXXFLAGS_FOR_BUILD}" \
1710 LD="${LD_FOR_BUILD}" LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1711 GMPINC="" CPPFLAGS="${CPPFLAGS} -DGENERATOR_FILE" \
1712 ${realsrcdir}/configure \
1713 --enable-languages=${enable_languages-all} \
1714 --target=$target_alias --host=$build_alias --build=$build_alias
1716 # We just finished tests for the build machine, so rename
1717 # the file auto-build.h in the gcc directory.
1718 mv auto-host.h ../auto-build.h
1721 build_auto=auto-build.h
1723 AC_SUBST(build_subdir)
1725 tm_file="${tm_file} defaults.h"
1726 tm_p_file="${tm_p_file} tm-preds.h"
1727 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1728 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1729 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1730 # put this back in temporarily.
1731 xm_file="auto-host.h ansidecl.h ${xm_file}"
1738 # Compile in configure arguments.
1739 if test -f configargs.h ; then
1740 # Being re-configured.
1741 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1742 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1744 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1747 # Double all backslashes and backslash all quotes to turn
1748 # gcc_config_arguments into a C string.
1749 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1750 $gcc_config_arguments
1752 gcc_config_arguments_str=`cat conftest.out`
1755 cat > configargs.h <<EOF
1756 /* Generated automatically. */
1757 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1758 static const char thread_model[] = "$thread_file";
1760 static const struct {
1761 const char *name, *value;
1762 } configure_default_options[] = $configure_default_options;
1767 gcc_BASEVER=`cat $srcdir/BASE-VER`
1768 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1769 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1770 if test -f $srcdir/REVISION ; then
1771 gcc_REVISION=`cat $srcdir/REVISION`
1775 cat > plugin-version.h <<EOF
1776 #include "configargs.h"
1778 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1779 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1780 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1781 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1783 static char basever[] = "$gcc_BASEVER";
1784 static char datestamp[] = "$gcc_DATESTAMP";
1785 static char devphase[] = "$gcc_DEVPHASE";
1786 static char revision[] = "$gcc_REVISION";
1788 /* FIXME plugins: We should make the version information more precise.
1789 One way to do is to add a checksum. */
1791 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1793 configuration_arguments};
1797 # Determine what GCC version number to use in filesystem paths.
1800 # Internationalization
1801 ZW_GNU_GETTEXT_SISTER_DIR
1803 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1804 # -liconv on the link line twice.
1805 case "$LIBINTL" in *$LIBICONV*)
1809 AC_ARG_ENABLE(secureplt,
1810 [AS_HELP_STRING([--enable-secureplt],
1811 [enable -msecure-plt by default for PowerPC])],
1814 AC_ARG_ENABLE(leading-mingw64-underscores,
1815 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1816 [enable leading underscores on 64 bit mingw targets]),
1818 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1819 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1820 [Define if we should use leading underscore on 64 bit mingw targets])])
1823 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1826 AC_ARG_ENABLE(frame-pointer,
1827 [AS_HELP_STRING([--enable-frame-pointer],
1828 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1831 linux* | darwin[[8912]]*)
1832 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1834 enable_frame_pointer=no
1837 enable_frame_pointer=yes
1842 # Windows32 Registry support for specifying GCC installation paths.
1843 AC_ARG_ENABLE(win32-registry,
1844 [AS_HELP_STRING([--disable-win32-registry],
1845 [disable lookup of installation paths in the
1846 Registry on Windows hosts])
1847 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1848 AS_HELP_STRING([--enable-win32-registry=KEY],
1849 [use KEY instead of GCC version as the last portion
1850 of the registry key])],,)
1853 win32 | pe | cygwin* | mingw32*)
1854 if test "x$enable_win32_registry" != xno; then
1855 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1858 if test "x$enable_win32_registry" != xno; then
1859 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1860 [Define to 1 if installation paths should be looked up in the Windows
1861 Registry. Ignored on non-Windows hosts.])
1863 if test "x$enable_win32_registry" != xyes \
1864 && test "x$enable_win32_registry" != x; then
1865 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1866 [Define to be the last component of the Windows registry key under which
1867 to look for installation paths. The full key used will be
1868 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1869 The default is the GCC version number.])
1875 # Get an absolute path to the GCC top-level source directory
1876 holddir=`${PWDCMD-pwd}`
1878 topdir=`${PWDCMD-pwd}`
1881 # Conditionalize the makefile for this host machine.
1883 for f in ${host_xmake_file}
1885 if test -f ${srcdir}/config/$f
1887 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1891 # Conditionalize the makefile for this target machine.
1893 for f in ${tmake_file}
1895 if test -f ${srcdir}/config/$f
1897 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1900 tmake_file="${tmake_file_}"
1902 out_object_file=`basename $out_file .c`.o
1903 common_out_object_file=`basename $common_out_file .c`.o
1905 tm_file_list="options.h"
1906 tm_include_list="options.h insn-constants.h"
1907 for f in $tm_file; do
1910 f=`echo $f | sed 's/^..//'`
1911 tm_file_list="${tm_file_list} $f"
1912 tm_include_list="${tm_include_list} $f"
1915 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1916 tm_include_list="${tm_include_list} $f"
1919 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1920 tm_include_list="${tm_include_list} config/$f"
1927 for f in $tm_p_file; do
1930 tm_p_file_list="${tm_p_file_list} $f"
1931 tm_p_include_list="${tm_p_include_list} $f"
1934 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1935 tm_p_include_list="${tm_p_include_list} config/$f"
1941 for f in $xm_file; do
1944 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1945 xm_include_list="${xm_include_list} $f"
1948 xm_file_list="${xm_file_list} $f"
1949 xm_include_list="${xm_include_list} $f"
1952 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1953 xm_include_list="${xm_include_list} config/$f"
1959 host_xm_include_list=
1960 for f in $host_xm_file; do
1963 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1964 host_xm_include_list="${host_xm_include_list} $f"
1967 host_xm_file_list="${host_xm_file_list} $f"
1968 host_xm_include_list="${host_xm_include_list} $f"
1971 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1972 host_xm_include_list="${host_xm_include_list} config/$f"
1978 for f in $build_xm_file; do
1981 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1982 build_xm_include_list="${build_xm_include_list} $f"
1984 auto-build.h | auto-host.h )
1985 build_xm_file_list="${build_xm_file_list} $f"
1986 build_xm_include_list="${build_xm_include_list} $f"
1989 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1990 build_xm_include_list="${build_xm_include_list} config/$f"
1995 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1996 # cross-compiler which does not use the native headers and libraries.
1997 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1998 CROSS= AC_SUBST(CROSS)
1999 ALL=all.internal AC_SUBST(ALL)
2000 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
2001 BUILD_SYSTEM_HEADER_DIR=$SYSTEM_HEADER_DIR AC_SUBST(BUILD_SYSTEM_HEADER_DIR)
2003 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x ||
2004 test x$build != x$host || test "x$with_build_sysroot" != x; then
2005 if test "x$with_build_sysroot" != x; then
2006 BUILD_SYSTEM_HEADER_DIR=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
2008 BUILD_SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2011 if test x$host != x$target
2013 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
2015 SYSTEM_HEADER_DIR=$BUILD_SYSTEM_HEADER_DIR
2016 elif test "x$TARGET_SYSTEM_ROOT" != x; then
2017 SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2020 if test "x$with_build_sysroot" != "x"; then
2021 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
2022 elif test "x$with_sysroot" = x; then
2023 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
2024 elif test "x$with_sysroot" = xyes; then
2025 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
2027 target_header_dir="${with_sysroot}${native_system_header_dir}"
2030 target_header_dir=${native_system_header_dir}
2033 # If this is a cross-compiler that does not
2034 # have its own set of headers then define
2037 # If this is using newlib, without having the headers available now,
2038 # then define inhibit_libc in LIBGCC2_CFLAGS.
2039 # This prevents libgcc2 from containing any code which requires libc
2041 : ${inhibit_libc=false}
2042 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
2043 test x$with_newlib = xyes ; } &&
2044 { test "x$with_headers" = xno || test ! -f "$target_header_dir/stdio.h"; } ; then
2047 AC_SUBST(inhibit_libc)
2049 # When building gcc with a cross-compiler, we need to adjust things so
2050 # that the generator programs are still built with the native compiler.
2051 # Also, we cannot run fixincludes.
2053 # These are the normal (build=host) settings:
2054 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
2055 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
2056 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
2057 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
2058 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
2059 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
2061 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS)' AC_SUBST(BUILD_NO_PIE_CFLAGS)
2062 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG)' AC_SUBST(BUILD_NO_PIE_FLAG)
2064 # And these apply if build != host, or we are generating coverage data
2065 if test x$build != x$host || test "x$coverage_flags" != x
2067 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
2068 BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CXXFLAGS_FOR_BUILD)'
2069 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
2071 NO_PIE_CFLAGS_FOR_BUILD=${NO_PIE_CFLAGS_FOR_BUILD-${NO_PIE_CFLAGS}}
2072 NO_PIE_FLAG_FOR_BUILD=${NO_PIE_FLAG_FOR_BUILD-${NO_PIE_FLAG}}
2073 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS_FOR_BUILD)'
2074 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG_FOR_BUILD)'
2076 AC_SUBST(NO_PIE_CFLAGS_FOR_BUILD)
2077 AC_SUBST(NO_PIE_FLAG_FOR_BUILD)
2079 # Expand extra_headers to include complete path.
2080 # This substitutes for lots of t-* files.
2082 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
2083 for file in ${extra_headers} ; do
2084 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
2087 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
2088 if test x"$use_gcc_tgmath" = xyes
2089 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
2092 # Define collect2 in Makefile.
2093 case $host_can_use_collect2 in
2095 *) collect2='collect2$(exeext)' ;;
2097 AC_SUBST([collect2])
2099 # Add a definition of USE_COLLECT2 if system wants one.
2100 case $use_collect2 in
2101 no) use_collect2= ;;
2104 host_xm_defines="${host_xm_defines} USE_COLLECT2"
2105 xm_defines="${xm_defines} USE_COLLECT2"
2106 case $host_can_use_collect2 in
2108 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
2114 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
2115 [Define to the name of the LTO plugin DSO that must be
2116 passed to the linker's -plugin=LIB option.])
2118 # ---------------------------
2119 # Assembler & linker features
2120 # ---------------------------
2122 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
2123 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
2124 # However when ld-new is first executed from the build tree, libtool will
2125 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
2126 # to the build tree. While doing this we need to use the previous-stage
2127 # linker, or we have an infinite loop. The presence of a shell script as
2128 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
2129 # the gcc/collect-ld script. So we need to know how libtool works, or
2130 # exec-tool will fail.
2132 m4_defun([_LT_CONFIG_COMMANDS], [])
2135 AC_SUBST(enable_fast_install)
2137 # Identify the assembler which will work hand-in-glove with the newly
2138 # built GCC, so that we can examine its features. This is the assembler
2139 # which will be driven by the driver program.
2141 # If build != host, and we aren't building gas in-tree, we identify a
2142 # build->target assembler and hope that it will have the same features
2143 # as the host->target assembler we'll be using.
2144 gcc_cv_gas_major_version=
2145 gcc_cv_gas_minor_version=
2146 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
2148 m4_pattern_allow([AS_FOR_TARGET])dnl
2149 AS_VAR_SET_IF(gcc_cv_as,, [
2150 if test -x "$DEFAULT_ASSEMBLER"; then
2151 gcc_cv_as="$DEFAULT_ASSEMBLER"
2152 elif test -f $gcc_cv_as_gas_srcdir/configure.ac \
2153 && test -f ../gas/Makefile \
2154 && test x$build = x$host; then
2155 gcc_cv_as=../gas/as-new$build_exeext
2156 elif test -x as$build_exeext; then
2157 # Build using assembler in the current directory.
2158 gcc_cv_as=./as$build_exeext
2159 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
2160 gcc_cv_as="$AS_FOR_TARGET"
2162 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
2165 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
2166 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
2167 case "$ORIGINAL_AS_FOR_TARGET" in
2168 ./as | ./as$build_exeext) ;;
2169 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2172 AC_MSG_CHECKING(what assembler to use)
2173 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
2174 # Single tree build which includes gas. We want to prefer it
2175 # over whatever linker top-level may have detected, since
2176 # we'll use what we're building after installation anyway.
2177 AC_MSG_RESULT(newly built gas)
2179 _gcc_COMPUTE_GAS_VERSION
2180 in_tree_gas_is_elf=no
2181 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
2182 || (grep 'obj_format = multi' ../gas/Makefile \
2183 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
2185 in_tree_gas_is_elf=yes
2188 AC_MSG_RESULT($gcc_cv_as)
2194 [[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]],
2195 [case "${enableval}" in
2201 install_gold_as_default=no
2203 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
2204 [case "${enableval}" in
2206 install_gold_as_default=yes
2209 if test x${default_ld} != x; then
2210 install_gold_as_default=yes
2216 AC_MSG_ERROR([invalid --enable-gold argument])
2220 # Identify the linker which will work hand-in-glove with the newly
2221 # built GCC, so that we can examine its features. This is the linker
2222 # which will be driven by the driver program.
2224 # If build != host, and we aren't building gas in-tree, we identify a
2225 # build->target linker and hope that it will have the same features
2226 # as the host->target linker we'll be using.
2227 gcc_cv_gld_major_version=
2228 gcc_cv_gld_minor_version=
2229 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2230 gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold
2231 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2233 AS_VAR_SET_IF(gcc_cv_ld,, [
2234 if test -x "$DEFAULT_LINKER"; then
2235 gcc_cv_ld="$DEFAULT_LINKER"
2236 elif test $install_gold_as_default = yes \
2237 && test -f $gcc_cv_ld_gold_srcdir/configure.ac \
2238 && test -f ../gold/Makefile \
2239 && test x$build = x$host; then
2240 gcc_cv_ld=../gold/ld-new$build_exeext
2241 elif test -f $gcc_cv_ld_gld_srcdir/configure.ac \
2242 && test -f ../ld/Makefile \
2243 && test x$build = x$host; then
2244 gcc_cv_ld=../ld/ld-new$build_exeext
2245 elif test -x collect-ld$build_exeext; then
2246 # Build using linker in the current directory.
2247 gcc_cv_ld=./collect-ld$build_exeext
2248 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2249 gcc_cv_ld="$LD_FOR_TARGET"
2251 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2254 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2255 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2256 # if the PLUGIN_LD is set ld-new, just have it as ld
2257 # as that is the installed named.
2258 if test x$PLUGIN_LD_SUFFIX = xld-new \
2259 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2262 AC_ARG_WITH(plugin-ld,
2263 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2264 [if test x"$withval" != x; then
2265 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2266 PLUGIN_LD_SUFFIX="$withval"
2268 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2269 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2271 # Check to see if we are using gold instead of ld
2272 AC_MSG_CHECKING(whether we are using gold)
2274 if test x$gcc_cv_ld != x; then
2275 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2276 | grep "GNU gold" > /dev/null; then
2280 AC_MSG_RESULT($ld_is_gold)
2282 AC_MSG_CHECKING(gold linker with split stack support as non default)
2283 # Check to see if default ld is not gold, but gold is
2284 # available and has support for split stack. If gcc was configured
2285 # with gold then no checking is done.
2287 if test x$ld_is_gold = xno && which ${gcc_cv_ld}.gold >/dev/null 2>&1; then
2289 # For platforms other than powerpc64*, enable as appropriate.
2292 ld_gold=`which ${gcc_cv_ld}.gold`
2293 # Make sure this gold has minimal split stack support
2294 if $ld_gold --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then
2295 ld_vers=`$ld_gold --version | sed 1q`
2296 gold_vers=`echo $ld_vers | sed -n \
2297 -e 's,^[[^)]]*[[ ]]\([[0-9]][[0-9]]*\.[[0-9]][[0-9]]*[[^)]]*\)) .*$,\1,p'`
2299 # check that the gold version contains the complete split stack support
2300 # on powerpc64 big and little endian
2302 case "$gold_vers" in
2303 2.25.[[1-9]]*|2.2[[6-9]][[.0-9]]*|2.[[3-9]][[.0-9]]*|[[3-9]].[[.0-9]]*) gold_non_default=yes
2305 *) gold_non_default=no
2311 if test $gold_non_default = yes; then
2312 AC_DEFINE(HAVE_GOLD_NON_DEFAULT_SPLIT_STACK, 1,
2313 [Define if the gold linker supports split stack and is available as a non-default])
2316 AC_MSG_RESULT($gold_non_default)
2318 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2319 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2320 case "$ORIGINAL_LD_FOR_TARGET" in
2321 ./collect-ld | ./collect-ld$build_exeext) ;;
2322 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2325 AC_MSG_CHECKING(what linker to use)
2326 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2327 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2328 # Single tree build which includes ld. We want to prefer it
2329 # over whatever linker top-level may have detected, since
2330 # we'll use what we're building after installation anyway.
2331 AC_MSG_RESULT(newly built ld)
2333 in_tree_ld_is_elf=no
2334 if (grep 'EMUL = .*elf' ../ld/Makefile \
2335 || grep 'EMUL = .*linux' ../ld/Makefile \
2336 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2337 in_tree_ld_is_elf=yes
2338 elif test "$ld_is_gold" = yes; then
2339 in_tree_ld_is_elf=yes
2341 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
2344 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2345 if test x$gcc_cv_gld_version != x; then
2349 case $gcc_cv_gld_version in
2352 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2355 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2356 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2358 ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext
2359 ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext
2361 AC_MSG_RESULT($gcc_cv_ld)
2363 gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext`
2364 ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext
2365 ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext
2368 AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET)
2369 AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET)
2371 # Figure out what nm we will be using.
2372 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2373 AS_VAR_SET_IF(gcc_cv_nm,, [
2374 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2375 && test -f ../binutils/Makefile \
2376 && test x$build = x$host; then
2377 gcc_cv_nm=../binutils/nm-new$build_exeext
2378 elif test -x nm$build_exeext; then
2379 gcc_cv_nm=./nm$build_exeext
2380 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2381 gcc_cv_nm="$NM_FOR_TARGET"
2383 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2386 AC_MSG_CHECKING(what nm to use)
2387 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2388 # Single tree build which includes binutils.
2389 AC_MSG_RESULT(newly built nm)
2392 AC_MSG_RESULT($gcc_cv_nm)
2396 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2397 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2398 case "$ORIGINAL_NM_FOR_TARGET" in
2399 ./nm | ./nm$build_exeext) ;;
2400 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2404 # Figure out what objdump we will be using.
2405 AS_VAR_SET_IF(gcc_cv_objdump,, [
2406 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2407 && test -f ../binutils/Makefile \
2408 && test x$build = x$host; then
2409 # Single tree build which includes binutils.
2410 gcc_cv_objdump=../binutils/objdump$build_exeext
2411 elif test -x objdump$build_exeext; then
2412 gcc_cv_objdump=./objdump$build_exeext
2413 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2414 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2416 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2419 AC_MSG_CHECKING(what objdump to use)
2420 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2421 # Single tree build which includes binutils.
2422 AC_MSG_RESULT(newly built objdump)
2423 elif test x$gcc_cv_objdump = x; then
2424 AC_MSG_RESULT(not found)
2426 AC_MSG_RESULT($gcc_cv_objdump)
2429 # Figure out what readelf we will be using.
2430 AS_VAR_SET_IF(gcc_cv_readelf,, [
2431 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2432 && test -f ../binutils/Makefile \
2433 && test x$build = x$host; then
2434 # Single tree build which includes binutils.
2435 gcc_cv_readelf=../binutils/readelf$build_exeext
2436 elif test -x readelf$build_exeext; then
2437 gcc_cv_readelf=./readelf$build_exeext
2438 elif ( set dummy $READELF_FOR_TARGET; test -x $[2] ); then
2439 gcc_cv_readelf="$READELF_FOR_TARGET"
2441 AC_PATH_PROG(gcc_cv_readelf, $READELF_FOR_TARGET)
2444 AC_MSG_CHECKING(what readelf to use)
2445 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2446 # Single tree build which includes binutils.
2447 AC_MSG_RESULT(newly built readelf)
2448 elif test x$gcc_cv_readelf = x; then
2449 AC_MSG_RESULT(not found)
2451 AC_MSG_RESULT($gcc_cv_readelf)
2454 # Figure out what assembler alignment features are present.
2455 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2459 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2460 [Define if your assembler supports .balign and .p2align.])])
2462 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2465 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2466 [Define if your assembler supports specifying the maximum number
2467 of bytes to skip when using the GAS .p2align command.])])
2469 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2472 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2473 [Define if your assembler supports .literal16.])])
2475 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2477 [conftest_label1: .word 0
2479 conftest_label2: .word 0
2481 [if test x$gcc_cv_nm != x; then
2482 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2483 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2484 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2486 else gcc_cv_as_subsection_m1=yes
2488 rm -f conftest.nm1 conftest.nm2
2490 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2491 [Define if your assembler supports .subsection and .subsection -1 starts
2492 emitting at the beginning of your section.])])
2494 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2497 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2499 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2501 [ .weakref foobar, barfnot],,
2502 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2504 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2507 .NSUBSPA $CODE$,COMDAT],,
2508 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2510 # .hidden needs to be supported in both the assembler and the linker,
2511 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2512 # This is irritatingly difficult to feature test for; we have to check the
2513 # date string after the version number. If we've got an in-tree
2514 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2516 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2519 conftest_s=' .globl foobar,hidden'
2522 conftest_s=' .hidden foobar
2526 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2527 [elf,2,13,0],, [$conftest_s])
2530 # Darwin as has some visibility support, though with a different syntax.
2531 gcc_cv_as_hidden=yes
2535 # gnu_indirect_function type is an extension proposed at
2536 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2537 # selection of function implementation
2538 AC_ARG_ENABLE(gnu-indirect-function,
2539 [AS_HELP_STRING([--enable-gnu-indirect-function],
2540 [enable the use of the @gnu_indirect_function to glibc systems])],
2541 [case $enable_gnu_indirect_function in
2543 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2544 Valid choices are 'yes' and 'no'.]) ;;
2546 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2548 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
2549 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
2550 [Define if your system supports gnu indirect functions.])
2554 if test $in_tree_ld != yes ; then
2555 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2556 if echo "$ld_ver" | grep GNU > /dev/null; then
2557 if test x"$ld_is_gold" = xyes; then
2558 # GNU gold --version looks like this:
2560 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2562 # We extract the binutils version which is more familiar and specific
2563 # than the gold version.
2564 ld_vers=`echo $ld_ver | sed -n \
2565 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2567 # GNU ld --version looks like this:
2569 # GNU ld (GNU Binutils) 2.21.51.20110225
2570 ld_vers=`echo $ld_ver | sed -n \
2571 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2573 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2574 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2575 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2576 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2580 # See acinclude.m4 (gcc_SUN_LD_VERSION) for the version number
2583 # Don't reuse gcc_gv_sun_ld_vers_* in case a linker other than
2584 # /usr/ccs/bin/ld has been configured.
2585 ld_ver=`$gcc_cv_ld -V 2>&1`
2586 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2587 ld_vers=`echo $ld_ver | sed -n \
2588 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2589 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2590 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2598 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2599 [[if test $in_tree_ld = yes ; then
2601 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2602 && test $in_tree_ld_is_elf = yes; then
2603 gcc_cv_ld_hidden=yes
2606 gcc_cv_ld_hidden=yes
2607 if test x"$ld_is_gold" = xyes; then
2609 elif echo "$ld_ver" | grep GNU > /dev/null; then
2611 mmix-knuth-mmixware)
2612 # The linker emits by default mmo, not ELF, so "no" is appropriate.
2616 if test 0"$ld_date" -lt 20020404; then
2617 if test -n "$ld_date"; then
2618 # If there was date string, but was earlier than 2002-04-04, fail
2620 elif test -z "$ld_vers"; then
2621 # If there was no date string nor ld version number, something is wrong
2624 test -z "$ld_vers_patch" && ld_vers_patch=0
2625 if test "$ld_vers_major" -lt 2; then
2627 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2628 gcc_cv_ld_hidden="no"
2629 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2637 gcc_cv_ld_hidden=yes
2640 # Darwin ld has some visibility support.
2641 gcc_cv_ld_hidden=yes
2643 hppa64*-*-hpux* | ia64*-*-hpux*)
2644 gcc_cv_ld_hidden=yes
2646 *-*-solaris2.1[0-9]*)
2647 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2648 # .symbolic was only added in Solaris 9 12/02.
2649 gcc_cv_ld_hidden=yes
2657 libgcc_visibility=no
2658 AC_SUBST(libgcc_visibility)
2659 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2660 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2661 libgcc_visibility=yes
2662 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2663 [Define if your assembler and linker support .hidden.])
2666 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2667 gcc_cv_ld_ro_rw_mix=unknown
2668 if test $in_tree_ld = yes ; then
2669 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2670 && test $in_tree_ld_is_elf = yes; then
2671 gcc_cv_ld_ro_rw_mix=read-write
2673 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2674 echo '.section myfoosect, "a"' > conftest1.s
2675 echo '.section myfoosect, "aw"' > conftest2.s
2676 echo '.byte 1' >> conftest2.s
2677 echo '.section myfoosect, "a"' > conftest3.s
2678 echo '.byte 0' >> conftest3.s
2679 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2680 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2681 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2682 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2683 conftest2.o conftest3.o > /dev/null 2>&1; then
2684 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2685 | sed -e '/myfoosect/!d' -e N`
2686 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2687 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2688 gcc_cv_ld_ro_rw_mix=read-only
2690 gcc_cv_ld_ro_rw_mix=read-write
2695 rm -f conftest.* conftest[123].*
2698 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2699 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2700 [Define if your linker links a mix of read-only
2701 and read-write sections into a read-write section.])
2703 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2705 gcc_AC_INITFINI_ARRAY
2707 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2708 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2716 [[# GAS versions before 2.11 do not support uleb128,
2717 # despite appearing to.
2718 # ??? There exists an elf-specific test that will crash
2719 # the assembler. Perhaps it's better to figure out whether
2720 # arbitrary sections are supported and try the test.
2721 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2722 if echo "$as_ver" | grep GNU > /dev/null; then
2723 as_vers=`echo $as_ver | sed -n \
2724 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2725 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2726 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2727 if test $as_major -eq 2 && test $as_minor -lt 11
2729 else gcc_cv_as_leb128=yes
2732 [AC_DEFINE(HAVE_AS_LEB128, 1,
2733 [Define if your assembler supports .sleb128 and .uleb128.])],
2734 [AC_DEFINE(HAVE_AS_LEB128, 0,
2735 [Define if your assembler supports .sleb128 and .uleb128.])])
2737 # Check if we have assembler support for unwind directives.
2738 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2745 .cfi_escape 1, 2, 3, 4, 5
2749 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2750 # read-only and read-write sections, we need to make sure that the
2751 # assembler used emits read-write .eh_frame sections.
2752 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2753 if test "x$gcc_cv_objdump" != x; then
2754 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2755 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2756 gcc_cv_as_cfi_directive=no
2759 i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*)
2760 # On Solaris/x86, make sure that GCC and assembler agree on using
2761 # read-only .eh_frame sections for 64-bit.
2762 if test x$gas = xyes; then
2763 as_ix86_64_opt="--64"
2765 as_ix86_64_opt="-xarch=amd64"
2767 if $gcc_cv_as $as_ix86_64_opt -o conftest.o conftest.s > /dev/null 2>&1 && \
2768 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2769 sed -e /.eh_frame/!d -e N | \
2770 grep READONLY > /dev/null; then
2771 gcc_cv_as_cfi_directive=yes
2773 gcc_cv_as_cfi_directive=no
2777 gcc_cv_as_cfi_directive=yes
2782 # no objdump, err on the side of caution
2783 gcc_cv_as_cfi_directive=no
2786 gcc_cv_as_cfi_directive=yes
2790 gcc_cv_as_cfi_directive=yes
2793 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2794 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2798 .cfi_adjust_cfa_offset 64
2800 .cfi_adjust_cfa_offset 128
2803 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2804 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2805 gcc_cv_as_cfi_advance_working=yes
2809 # no objdump, err on the side of caution
2810 gcc_cv_as_cfi_advance_working=no
2812 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2813 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2814 [`if test $gcc_cv_as_cfi_directive = yes \
2815 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2816 [Define 0/1 if your assembler supports CFI directives.])
2818 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2819 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2820 gcc_cv_as_cfi_personality_directive, ,,
2823 .cfi_personality 0, symbol
2825 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2826 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2827 then echo 1; else echo 0; fi`],
2828 [Define 0/1 if your assembler supports .cfi_personality.])
2830 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2831 gcc_cv_as_cfi_sections_directive, ,,
2833 .cfi_sections .debug_frame, .eh_frame
2837 win32 | pe | cygwin* | mingw32*)
2838 # Need to check that we generated the correct relocation for the
2839 # .debug_frame section. This was fixed for binutils 2.21.
2840 gcc_cv_as_cfi_sections_directive=no
2841 if test "x$gcc_cv_objdump" != x; then
2842 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2843 grep secrel > /dev/null; then
2844 gcc_cv_as_cfi_sections_directive=yes
2849 gcc_cv_as_cfi_sections_directive=yes
2852 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2853 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2854 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2855 then echo 1; else echo 0; fi`],
2856 [Define 0/1 if your assembler supports .cfi_sections.])
2858 # GAS versions up to and including 2.11.0 may mis-optimize
2860 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2868 .section .eh_frame,"aw",@progbits
2870 .4byte .LECIE1-.LSCIE1
2884 .4byte .LEFDE1-.LASFDE1
2886 .4byte .LASFDE1-__FRAME_BEGIN__
2894 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2895 cat > conftest.lit <<EOF
2896 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2897 0010 01000000 12000000 18000000 00000000 ................
2898 0020 08000000 04080000 0044 .........D @&t@
2900 cat > conftest.big <<EOF
2901 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2902 0010 00000001 00000012 00000018 00000000 ................
2903 0020 00000008 04000000 0844 .........D @&t@
2905 # If the assembler didn't choke, and we can objdump,
2906 # and we got the correct data, then succeed.
2907 # The text in the here-document typically retains its unix-style line
2908 # endings, while the output of objdump will use host line endings.
2909 # Therefore, use diff -b for the comparisons.
2910 if test x$gcc_cv_objdump != x \
2911 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2912 | tail -3 > conftest.got \
2913 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2914 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2916 gcc_cv_as_eh_frame=yes
2917 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2918 gcc_cv_as_eh_frame=buggy
2920 # Uh oh, what do we do now?
2921 gcc_cv_as_eh_frame=no
2924 if test $gcc_cv_as_eh_frame = buggy; then
2925 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2926 [Define if your assembler mis-optimizes .eh_frame data.])
2929 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2930 [elf,2,12,0], [--fatal-warnings],
2931 [.section .rodata.str, "aMS", @progbits, 1])
2932 if test $gcc_cv_as_shf_merge = no; then
2933 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2934 [elf,2,12,0], [--fatal-warnings],
2935 [.section .rodata.str, "aMS", %progbits, 1])
2937 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2938 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2939 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2941 gcc_GAS_CHECK_FEATURE([stabs directive], gcc_cv_as_stabs_directive, ,,
2942 [.stabs "gcc2_compiled.",60,0,0,0],,
2943 [AC_DEFINE(HAVE_AS_STABS_DIRECTIVE, 1,
2944 [Define if your assembler supports .stabs.])])
2946 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2947 gcc_cv_as_comdat_group,
2948 [elf,2,16,0], [--fatal-warnings],
2949 [.section .text,"axG",@progbits,.foo,comdat])
2950 if test $gcc_cv_as_comdat_group = yes; then
2951 gcc_cv_as_comdat_group_percent=no
2952 gcc_cv_as_comdat_group_group=no
2954 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2955 gcc_cv_as_comdat_group_percent,
2956 [elf,2,16,0], [--fatal-warnings],
2957 [.section .text,"axG",%progbits,.foo,comdat])
2958 if test $gcc_cv_as_comdat_group_percent = yes; then
2959 gcc_cv_as_comdat_group_group=no
2962 # Sun as uses a completely different syntax.
2967 .group foo,".text%foo",#comdat
2968 .section ".text%foo", #alloc,#execinstr,#progbits
2973 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2975 .group foo,.text%foo,#comdat
2976 .section .text%foo, "ax", @progbits
2982 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
2983 gcc_cv_as_comdat_group_group,
2987 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
2988 gcc_cv_as_comdat_group_group=no
2992 if test x"$ld_is_gold" = xyes; then
2994 elif test $in_tree_ld = yes ; then
2996 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2997 && test $in_tree_ld_is_elf = yes; then
3000 elif echo "$ld_ver" | grep GNU > /dev/null; then
3002 if test 0"$ld_date" -lt 20050308; then
3003 if test -n "$ld_date"; then
3004 # If there was date string, but was earlier than 2005-03-08, fail
3006 elif test "$ld_vers_major" -lt 2; then
3008 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
3015 *-*-solaris2.1[1-9]*)
3017 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
3018 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
3021 # If using Sun as for COMDAT group as emitted by GCC, one needs at
3022 # least ld version 1.2267.
3023 if test "$ld_vers_major" -gt 1; then
3025 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
3027 elif test "$ld_vers_minor" -ge 2267; then
3032 # Assume linkers other than GNU ld don't support COMDAT group.
3038 # Allow overriding the automatic COMDAT group tests above.
3039 AC_ARG_ENABLE(comdat,
3040 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
3041 [comdat_group="$enable_comdat"])
3042 if test $comdat_group = no; then
3043 gcc_cv_as_comdat_group=no
3044 gcc_cv_as_comdat_group_percent=no
3045 gcc_cv_as_comdat_group_group=no
3047 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
3048 [`if test $gcc_cv_as_comdat_group = yes \
3049 || test $gcc_cv_as_comdat_group_percent = yes \
3050 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
3051 [Define 0/1 if your assembler and linker support COMDAT groups.])
3053 gcc_GAS_CHECK_FEATURE([line table discriminator support],
3054 gcc_cv_as_discriminator,
3058 .loc 1 1 0 discriminator 1],,
3059 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
3060 [Define if your assembler supports the .loc discriminator sub-directive.])])
3062 # Thread-local storage - the check is heavily parameterized.
3071 .section ".tdata","awT",@progbits
3074 ldq $27,__tls_get_addr($29) !literal!1
3075 lda $16,foo($29) !tlsgd!1
3076 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
3077 ldq $27,__tls_get_addr($29) !literal!2
3078 lda $16,foo($29) !tlsldm!2
3079 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
3080 ldq $1,foo($29) !gotdtprel
3081 ldah $2,foo($29) !dtprelhi
3082 lda $3,foo($2) !dtprello
3083 lda $4,foo($29) !dtprel
3084 ldq $1,foo($29) !gottprel
3085 ldah $2,foo($29) !tprelhi
3086 lda $3,foo($2) !tprello
3087 lda $4,foo($29) !tprel'
3090 tls_as_opt=--fatal-warnings
3094 add_s r0,r0, @foo@tpoff'
3098 cris-*-*|crisv32-*-*)
3100 .section ".tdata","awT",@progbits
3107 tls_as_opt=--fatal-warnings
3111 .section ".tdata","awT",@progbits
3123 .section ".tdata","awT",@progbits
3127 addil LT%foo-$tls_gdidx$,gp
3128 ldo RT%foo-$tls_gdidx$(%r1),%arg0
3131 addil LT%foo-$tls_ldidx$,gp
3133 ldo RT%foo-$tls_ldidx$(%r1),%arg0
3134 addil LR%foo-$tls_dtpoff$,%ret0
3135 ldo RR%foo-$tls_dtpoff$(%r1),%t1
3137 addil LT%foo-$tls_ieoff$,gp
3138 ldw RT%foo-$tls_ieoff$(%r1),%t2
3141 addil LR%foo-$tls_leoff$,%t1
3142 ldo RR%foo-$tls_leoff$(%r1),%t2'
3145 tls_as_opt=--fatal-warnings
3149 .section ".tdata","awT",%progbits
3160 i[34567]86-*-* | x86_64-*-*)
3162 i[34567]86-*-solaris2.* | x86_64-*-solaris2.1[0-9]*)
3169 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3171 .section .tdata,"awt",@progbits'
3176 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
3177 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
3181 .section ".tdata","awT",@progbits'
3185 tls_as_opt="--fatal-warnings"
3189 conftest_s="$conftest_s
3193 leal foo@tlsgd(,%ebx,1), %eax
3194 leal foo@tlsldm(%ebx), %eax
3195 leal foo@dtpoff(%eax), %edx
3196 movl foo@gottpoff(%ebx), %eax
3197 subl foo@gottpoff(%ebx), %eax
3198 addl foo@gotntpoff(%ebx), %eax
3199 movl foo@indntpoff, %eax
3200 movl \$foo@tpoff, %eax
3201 subl \$foo@tpoff, %eax
3202 leal foo@ntpoff(%ecx), %eax"
3205 if test x$on_solaris = xyes; then
3207 yes) tls_as_opt="$tls_as_opt --64" ;;
3208 no) tls_as_opt="$tls_as_opt -xarch=amd64" ;;
3211 conftest_s="$conftest_s
3215 leaq foo@tlsgd(%rip), %rdi
3216 leaq foo@tlsld(%rip), %rdi
3217 leaq foo@dtpoff(%rax), %rdx
3218 movq foo@gottpoff(%rip), %rax
3219 movq \$foo@tpoff, %rax"
3225 .section ".tdata","awT",@progbits
3228 addl r16 = @ltoff(@dtpmod(foo#)), gp
3229 addl r17 = @ltoff(@dtprel(foo#)), gp
3230 addl r18 = @ltoff(@tprel(foo#)), gp
3231 addl r19 = @dtprel(foo#), gp
3232 adds r21 = @dtprel(foo#), r13
3233 movl r23 = @dtprel(foo#)
3234 addl r20 = @tprel(foo#), gp
3235 adds r22 = @tprel(foo#), r13
3236 movl r24 = @tprel(foo#)'
3239 tls_as_opt=--fatal-warnings
3243 .section .tdata,"awT",@progbits
3247 addik r5,r20,x@TLSGD
3248 addik r5,r20,x@TLSLDM'
3251 tls_as_opt='--fatal-warnings'
3255 .section .tdata,"awT",@progbits
3259 addiu $4, $28, %tlsgd(x)
3260 addiu $4, $28, %tlsldm(x)
3261 lui $4, %dtprel_hi(x)
3262 addiu $4, $4, %dtprel_lo(x)
3263 lw $4, %gottprel(x)($28)
3264 lui $4, %tprel_hi(x)
3265 addiu $4, $4, %tprel_lo(x)'
3268 tls_as_opt='-32 --fatal-warnings'
3272 .section .tdata,"awT",@progbits
3277 move.l x@TLSGD(%a5),%a0
3278 move.l x@TLSLDM(%a5),%a0
3279 move.l x@TLSLDO(%a5),%a0
3280 move.l x@TLSIE(%a5),%a0
3281 move.l x@TLSLE(%a5),%a0'
3284 tls_as_opt='--fatal-warnings'
3288 .section ".tdata","awT",@progbits'
3291 tls_as_opt="--fatal-warnings"
3295 .section ".tdata","awT",%progbits
3299 add x0, x0, #:tlsgd_lo12:x
3304 tls_as_opt='--fatal-warnings'
3308 .extern __get_tpointer
3326 .section ".tdata","awT",@progbits
3334 addi 3,2,ld0@got@tlsgd
3340 addi 3,2,x1@got@tlsld
3346 addis 9,3,x2@dtprel@ha
3347 addi 9,9,x2@dtprel@l
3350 ld 9,x3@got@dtprel(2)
3356 tls_as_opt="-a64 --fatal-warnings"
3360 .section ".tdata","awT",@progbits
3368 addi 3,31,ld0@got@tlsgd
3370 addi 3,31,x1@got@tlsld
3373 addis 9,3,x2@dtprel@ha
3374 addi 9,9,x2@dtprel@l
3375 lwz 9,x3@got@tprel(31)
3378 addis 9,2,x2@tprel@ha
3379 addi 9,9,x2@tprel@l'
3382 tls_as_opt="-a32 --fatal-warnings"
3386 .section .tdata,"awT",@progbits
3390 call __tls_get_addr'
3393 tls_as_opt='--fatal-warnings'
3397 .section ".tdata","awT",@progbits
3406 l %r1,foo@GOTNTPOFF(%r12)
3407 l %r1,0(%r1):tls_load:foo
3408 bas %r14,0(%r1,%r13):tls_gdcall:foo
3409 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3412 tls_as_opt="-m31 --fatal-warnings"
3416 .section ".tdata","awT",@progbits
3424 lg %r1,foo@GOTNTPOFF(%r12)
3425 larl %r1,foo@INDNTPOFF
3426 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3427 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3430 tls_as_opt="-m64 -Aesame --fatal-warnings"
3432 sh-*-* | sh[123456789lbe]*-*-*)
3434 .section ".tdata","awT",@progbits
3444 tls_as_opt=--fatal-warnings
3448 sparc*-sun-solaris2.*)
3455 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3457 .section ".tdata",#alloc,#write,#tls'
3462 .section ".tdata","awT",@progbits'
3465 tls_as_opt="-32 --fatal-warnings"
3467 conftest_s="$conftest_s
3470 sethi %tgd_hi22(foo), %o0
3471 add %o0, %tgd_lo10(foo), %o1
3472 add %l7, %o1, %o0, %tgd_add(foo)
3473 call __tls_get_addr, %tgd_call(foo)
3474 sethi %tldm_hi22(foo), %l1
3475 add %l1, %tldm_lo10(foo), %l2
3476 add %l7, %l2, %o0, %tldm_add(foo)
3477 call __tls_get_addr, %tldm_call(foo)
3478 sethi %tldo_hix22(foo), %l3
3479 xor %l3, %tldo_lox10(foo), %l4
3480 add %o0, %l4, %l5, %tldo_add(foo)
3481 sethi %tie_hi22(foo), %o3
3482 add %o3, %tie_lo10(foo), %o3
3483 ld [%l7 + %o3], %o2, %tie_ld(foo)
3484 add %g7, %o2, %o4, %tie_add(foo)
3485 sethi %tle_hix22(foo), %l1
3486 xor %l1, %tle_lox10(foo), %o5
3487 ld [%g7 + %o5], %o1"
3491 .section ".tdata","awT",@progbits
3494 addli r0, zero, tls_gd(foo)
3495 auli r0, zero, tls_gd_ha16(foo)
3496 addli r0, r0, tls_gd_lo16(foo)
3498 addli r0, zero, tls_ie(foo)
3499 auli r0, r0, tls_ie_ha16(foo)
3500 addli r0, r0, tls_ie_lo16(foo)'
3503 tls_as_opt="--fatal-warnings"
3507 .section ".tdata","awT",@progbits
3510 shl16insli r0, zero, hw0_last_tls_gd(foo)
3511 shl16insli r0, zero, hw1_last_tls_gd(foo)
3512 shl16insli r0, r0, hw0_tls_gd(foo)
3514 shl16insli r0, zero, hw1_last_tls_ie(foo)
3515 shl16insli r0, r0, hw0_tls_ie(foo)'
3518 tls_as_opt="--fatal-warnings"
3522 .section ".tdata","awT",@progbits
3525 movi a8, foo@TLSFUNC
3526 movi a10, foo@TLSARG
3527 callx8.tls a8, foo@TLSCALL'
3534 if test "x$enable_tls" = xno ; then
3535 : # TLS explicitly disabled.
3536 elif test "x$enable_tls" = xyes ; then
3537 set_have_as_tls=yes # TLS explicitly enabled.
3538 elif test -z "$tls_first_major"; then
3539 : # If we don't have a check, assume no support.
3541 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3542 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3543 [set_have_as_tls=yes])
3545 if test $set_have_as_tls = yes ; then
3546 AC_DEFINE(HAVE_AS_TLS, 1,
3547 [Define if your assembler and linker support thread-local storage.])
3550 # Target-specific assembler checks.
3552 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3553 gcc_cv_ld_static_dynamic=no
3554 gcc_cv_ld_static_option='-Bstatic'
3555 gcc_cv_ld_dynamic_option='-Bdynamic'
3556 if test $in_tree_ld = yes ; then
3557 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3558 gcc_cv_ld_static_dynamic=yes
3560 elif test x$gcc_cv_ld != x; then
3561 # Check if linker supports -Bstatic/-Bdynamic option
3562 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3563 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3564 gcc_cv_ld_static_dynamic=yes
3567 # AIX ld uses -b flags
3568 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
3569 gcc_cv_ld_static_dynamic=yes
3570 gcc_cv_ld_static_option="-bstatic"
3571 gcc_cv_ld_dynamic_option="-bdynamic"
3573 # HP-UX ld uses -a flags to select between shared and archive.
3575 if test x"$gnu_ld" = xno; then
3576 gcc_cv_ld_static_dynamic=yes
3577 gcc_cv_ld_static_option="-aarchive_shared"
3578 gcc_cv_ld_dynamic_option="-adefault"
3581 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3583 gcc_cv_ld_static_dynamic=yes
3588 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3589 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3590 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3591 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3592 [Define to the linker option to disable use of shared objects.])
3593 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3594 [Define to the linker option to enable use of shared objects.])
3596 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3598 if test x"$demangler_in_ld" = xyes; then
3599 AC_MSG_CHECKING(linker --demangle support)
3600 gcc_cv_ld_demangle=no
3601 if test $in_tree_ld = yes; then
3602 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3603 gcc_cv_ld_demangle=yes
3605 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3606 # Check if the GNU linker supports --demangle option
3607 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3608 gcc_cv_ld_demangle=yes
3611 if test x"$gcc_cv_ld_demangle" = xyes; then
3612 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3613 [Define if your linker supports --demangle option.])
3615 AC_MSG_RESULT($gcc_cv_ld_demangle)
3618 AC_MSG_CHECKING(linker plugin support)
3620 if test -f liblto_plugin.la; then
3621 save_ld_ver="$ld_ver"
3622 save_ld_vers_major="$ld_vers_major"
3623 save_ld_vers_minor="$ld_vers_minor"
3624 save_ld_is_gold="$ld_is_gold"
3628 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3630 # FIXME: ld_is_gold?
3631 ld_vers_major="$gcc_cv_gld_major_version"
3632 ld_vers_minor="$gcc_cv_gld_minor_version"
3634 # Determine plugin linker version.
3635 # FIXME: Partial duplicate from above, generalize.
3637 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3638 if echo "$ld_ver" | grep GNU > /dev/null; then
3639 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3641 ld_vers=`echo $ld_ver | sed -n \
3642 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3644 ld_vers=`echo $ld_ver | sed -n \
3645 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3647 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3648 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3653 # Determine plugin support.
3654 if echo "$ld_ver" | grep GNU > /dev/null; then
3655 # Require GNU ld or gold 2.21+ for plugin support by default.
3656 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3658 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3659 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3664 ld_ver="$save_ld_ver"
3665 ld_vers_major="$save_ld_vers_major"
3666 ld_vers_minor="$save_ld_vers_minor"
3667 ld_is_gold="$save_ld_is_gold"
3669 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3670 [Define to the level of your linker's plugin support.])
3671 AC_MSG_RESULT($gcc_cv_lto_plugin)
3673 # Target OS-specific assembler checks.
3675 case "$target_os" in
3677 gcc_GAS_CHECK_FEATURE([-mmacosx-version-min option],
3678 gcc_cv_as_mmacosx_version_min,,
3679 [-mmacosx-version-min=10.1], [.text],,
3680 [AC_DEFINE(HAVE_AS_MMACOSX_VERSION_MIN_OPTION, 1,
3681 [Define if your Mac OS X assembler supports the -mmacos-version-min option.])])
3685 # Target CPU-specific assembler checks.
3689 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,,
3690 [-mabi=lp64], [.text],,,)
3691 if test x$gcc_cv_as_aarch64_mabi = xyes; then
3692 AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
3693 [Define if your assembler supports the -mabi option.])
3695 if test x$with_abi = xilp32; then
3696 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3697 Upgrade the Assembler.])
3699 if test x"$with_multilib_list" = xdefault; then
3700 TM_MULTILIB_CONFIG=lp64
3702 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
3703 for aarch64_multilib in ${aarch64_multilibs}; do
3704 case ${aarch64_multilib} in
3706 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3707 Upgrade the Assembler.])
3715 # Check if we have binutils support for relocations types needed by -fpic
3716 gcc_GAS_CHECK_FEATURE([-fpic relocs], gcc_cv_as_aarch64_picreloc,,,
3719 ldr x0, [[x2, #:gotpage_lo15:globalsym]]
3720 ],,[AC_DEFINE(HAVE_AS_SMALL_PIC_RELOCS, 1,
3721 [Define if your assembler supports relocs needed by -fpic.])])
3722 # Enable default workaround for AArch64 Cortex-A53 erratum 835769.
3723 AC_ARG_ENABLE(fix-cortex-a53-835769,
3725 AS_HELP_STRING([--enable-fix-cortex-a53-835769],
3726 [enable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3727 AS_HELP_STRING([--disable-fix-cortex-a53-835769],
3728 [disable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3733 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1"
3738 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\
3739 Valid choices are 'yes' and 'no'.])
3745 # Enable default workaround for AArch64 Cortex-A53 erratum 843419.
3746 AC_ARG_ENABLE(fix-cortex-a53-843419,
3748 AS_HELP_STRING([--enable-fix-cortex-a53-843419],
3749 [enable workaround for AArch64 Cortex-A53 erratum 843419 by default])
3750 AS_HELP_STRING([--disable-fix-cortex-a53-843419],
3751 [disable workaround for AArch64 Cortex-A53 erratum 843419 by default])
3756 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1"
3761 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\
3762 Valid choices are 'yes' and 'no'.])
3770 # All TARGET_ABI_OSF targets.
3771 alpha*-*-linux* | alpha*-*-*bsd*)
3772 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3773 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3776 extbl $3, $2, $3 !lituse_bytoff!1
3777 ldq $2, a($29) !literal!1
3778 ldq $4, b($29) !literal!2
3779 ldq_u $3, 0($2) !lituse_base!1
3780 ldq $27, f($29) !literal!5
3781 jsr $26, ($27), f !lituse_jsr!5
3782 ldah $29, 0($26) !gpdisp!3
3783 lda $0, c($29) !gprel
3784 ldah $1, d($29) !gprelhigh
3785 lda $1, d($1) !gprellow
3786 lda $29, 0($29) !gpdisp!3],,
3787 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3788 [Define if your assembler supports explicit relocations.])])
3789 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3790 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3793 ldq $27, a($29) !literal!1
3794 jsr $26, ($27), a !lituse_jsrdirect!1],,
3795 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3796 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3800 gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax,,
3801 [--mlink-relax], [.text],,
3802 [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1,
3803 [Define if your avr assembler supports --mlink-relax option.])])
3805 gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,,
3807 [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1,
3808 [Define if your avr assembler supports -mrmw option.])])
3812 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3813 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3814 [-no-mul-bug-abort], [.text],,
3815 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3816 [Define if your assembler supports the -no-mul-bug-abort option.])])
3820 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3821 [.register %g2, #scratch],,
3822 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3823 [Define if your assembler supports .register.])])
3825 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3827 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3828 [Define if your assembler supports -relax option.])])
3830 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3831 gcc_cv_as_sparc_gotdata_op,,
3838 sethi %gdop_hix22(foo), %g1
3839 xor %g1, %gdop_lox10(foo), %g1
3840 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3841 [if test x$gcc_cv_ld != x \
3842 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3843 if test x$gcc_cv_objdump != x; then
3844 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3845 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3846 gcc_cv_as_sparc_gotdata_op=no
3848 gcc_cv_as_sparc_gotdata_op=yes
3853 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3854 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3856 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3857 gcc_cv_as_sparc_ua_pcrel,,
3865 .uaword %r_disp32(foo)],
3866 [if test x$gcc_cv_ld != x \
3867 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3868 gcc_cv_as_sparc_ua_pcrel=yes
3871 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3872 [Define if your assembler and linker support unaligned PC relative relocs.])
3874 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3875 gcc_cv_as_sparc_ua_pcrel_hidden,,
3880 .uaword %r_disp32(foo)
3881 .byte 0x32, 0x33, 0x34
3886 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3887 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3888 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3889 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3890 if $gcc_cv_objdump -R conftest 2> /dev/null \
3891 | grep 'DISP32' > /dev/null 2>&1; then
3894 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3898 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3899 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3900 ]) # unaligned pcrel relocs
3902 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3903 gcc_cv_as_sparc_offsetable_lo10,,
3906 or %g1, %lo(ab) + 12, %g1
3907 or %g1, %lo(ab + 12), %g1],
3908 [if test x$gcc_cv_objdump != x \
3909 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3910 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3911 gcc_cv_as_sparc_offsetable_lo10=yes
3913 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3914 [Define if your assembler supports offsetable %lo().])])
3916 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
3917 gcc_cv_as_sparc_fmaf,,
3920 .register %g2, #scratch
3921 .register %g3, #scratch
3923 fmaddd %f0, %f2, %f4, %f6
3924 addxccc %g1, %g2, %g3
3925 fsrl32 %f2, %f4, %f8
3926 fnaddd %f10, %f12, %f14],,
3927 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
3928 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
3930 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
3931 gcc_cv_as_sparc_sparc4,,
3934 .register %g2, #scratch
3935 .register %g3, #scratch
3938 1: cwbneg %g2, %g3, 1f
3941 aes_kexpand0 %f4, %f6, %f8
3942 des_round %f38, %f40, %f42, %f44
3943 camellia_f %f54, %f56, %f58, %f60
3944 kasumi_fi_xor %f46, %f48, %f50, %f52],,
3945 [AC_DEFINE(HAVE_AS_SPARC4, 1,
3946 [Define if your assembler supports SPARC4 instructions.])])
3948 gcc_GAS_CHECK_FEATURE([SPARC5 and VIS 4.0 instructions],
3949 gcc_cv_as_sparc_sparc5,,
3952 .register %g2, #scratch
3953 .register %g3, #scratch
3956 fpadd8 %f0, %f2, %f4],,
3957 [AC_DEFINE(HAVE_AS_SPARC5_VIS4, 1,
3958 [Define if your assembler supports SPARC5 and VIS 4.0 instructions.])])
3960 gcc_GAS_CHECK_FEATURE([LEON instructions],
3961 gcc_cv_as_sparc_leon,,
3964 .register %g2, #scratch
3965 .register %g3, #scratch
3969 casa [[%g2]] 0xb, %g3, %g1],,
3970 [AC_DEFINE(HAVE_AS_LEON, 1,
3971 [Define if your assembler supports LEON instructions.])])
3975 i[34567]86-*-* | x86_64-*-*)
3979 # Full C++ conformance when using a shared libstdc++-v3 requires some
3980 # support from the Cygwin DLL, which in more recent versions exports
3981 # wrappers to aid in interposing and redirecting operators new, delete,
3982 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3983 # are configuring for a version of Cygwin that exports the wrappers.
3984 if test x$host = x$target && test x$host_cpu = xi686; then
3985 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3987 # Can't check presence of libc functions during cross-compile, so
3988 # we just have to assume we're building for an up-to-date target.
3989 gcc_ac_cygwin_dll_wrappers=yes
3991 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3992 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3993 [Define if you want to generate code by default that assumes that the
3994 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3997 cygwin* | pe | mingw32*)
3998 # Recent binutils allows the three-operand form of ".comm" on PE. This
3999 # definition is used unconditionally to initialise the default state of
4000 # the target option variable that governs usage of the feature.
4001 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
4002 [2,19,52],,[.comm foo,1,32])
4003 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
4004 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
4005 [Define if your assembler supports specifying the alignment
4006 of objects allocated using the GAS .comm command.])
4007 # Used for DWARF 2 in PE
4008 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
4009 gcc_cv_as_ix86_pe_secrel32,
4015 [if test x$gcc_cv_ld != x \
4016 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
4017 gcc_cv_as_ix86_pe_secrel32=yes
4020 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
4021 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
4022 # Test if the assembler supports the extended form of the .section
4023 # directive that specifies section alignment. LTO support uses this,
4024 # but normally only after installation, so we warn but don't fail the
4025 # configure if LTO is enabled but the assembler does not support it.
4026 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
4027 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
4028 if test x$gcc_cv_as_section_has_align != xyes; then
4029 case ",$enable_languages," in
4031 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
4038 # Test if the assembler supports the section flag 'e' for specifying
4039 # an excluded section.
4040 gcc_GAS_CHECK_FEATURE([.section with e], gcc_cv_as_section_has_e,
4041 [2,22,51], [--fatal-warnings],
4044 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
4045 [`if test $gcc_cv_as_section_has_e = yes; then echo 1; else echo 0; fi`],
4046 [Define if your assembler supports specifying the section flag e.])
4048 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
4049 gcc_cv_as_ix86_filds,,,
4050 [filds (%ebp); fists (%ebp)],,
4051 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
4052 [Define if your assembler uses filds and fists mnemonics.])])
4054 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
4055 gcc_cv_as_ix86_fildq,,,
4056 [fildq (%ebp); fistpq (%ebp)],,
4057 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
4058 [Define if your assembler uses fildq and fistq mnemonics.])])
4060 gcc_GAS_CHECK_FEATURE([cmov syntax],
4061 gcc_cv_as_ix86_cmov_sun_syntax,,,
4062 [cmovl.l %edx, %eax],,
4063 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
4064 [Define if your assembler supports the Sun syntax for cmov.])])
4066 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
4067 gcc_cv_as_ix86_ffreep,,,
4069 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
4070 [Define if your assembler supports the ffreep mnemonic.])])
4072 gcc_GAS_CHECK_FEATURE([.quad directive],
4073 gcc_cv_as_ix86_quad,,,
4075 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
4076 [Define if your assembler supports the .quad directive.])])
4078 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
4079 gcc_cv_as_ix86_sahf,,,
4082 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
4083 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
4085 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
4086 gcc_cv_as_ix86_interunit_movq,,,
4090 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
4091 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
4092 [Define if your assembler supports interunit movq mnemonic.])
4094 gcc_GAS_CHECK_FEATURE([hle prefixes],
4095 gcc_cv_as_ix86_hle,,,
4096 [lock xacquire cmpxchg %esi, (%ecx)],,
4097 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
4098 [Define if your assembler supports HLE prefixes.])])
4100 gcc_GAS_CHECK_FEATURE([swap suffix],
4101 gcc_cv_as_ix86_swap,,,
4102 [movl.s %esp, %ebp],,
4103 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
4104 [Define if your assembler supports the swap suffix.])])
4106 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
4107 gcc_cv_as_ix86_diff_sect_delta,,,
4115 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
4116 [Define if your assembler supports the subtraction of symbols in different sections.])])
4118 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
4119 gcc_cv_as_ix86_rep_lock_prefix,,,
4125 lock addl %edi, (%eax,%esi)
4126 lock orl $0, (%esp)],,
4127 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
4128 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
4130 gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
4131 gcc_cv_as_ix86_ud2,,,
4133 [AC_DEFINE(HAVE_AS_IX86_UD2, 1,
4134 [Define if your assembler supports the 'ud2' mnemonic.])])
4136 # Enforce 32-bit output with gas and gld.
4137 if test x$gas = xyes; then
4138 as_ix86_gas_32_opt="--32"
4140 if echo "$ld_ver" | grep GNU > /dev/null; then
4141 if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then
4142 ld_ix86_gld_32_opt="-melf_i386_sol2"
4144 ld_ix86_gld_32_opt="-melf_i386"
4148 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
4149 gcc_cv_as_ix86_tlsgdplt,,
4150 [$as_ix86_gas_32_opt],
4151 [call tls_gd@tlsgdplt],
4152 [if test x$gcc_cv_ld != x \
4153 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4154 gcc_cv_as_ix86_tlsgdplt=yes
4157 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
4158 [Define if your assembler and linker support @tlsgdplt.])])
4161 .section .tdata,"aw'$tls_section_flag'",@progbits
4163 .section .text,"ax",@progbits
4164 call tls_ld@tlsldmplt'
4166 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
4167 gcc_cv_as_ix86_tlsldmplt,,
4168 [$as_ix86_gas_32_opt],
4170 [if test x$gcc_cv_ld != x \
4171 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4172 gcc_cv_as_ix86_tlsldmplt=yes
4175 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT,
4176 [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`],
4177 [Define to 1 if your assembler and linker support @tlsldmplt.])
4180 .section .text,"ax",@progbits
4182 .type _start, @function
4184 leal value@tlsldm(%ebx), %eax
4185 call ___tls_get_addr@plt
4187 .section .tdata,"aw'$tls_section_flag'",@progbits
4188 .type value, @object
4190 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc],
4191 gcc_cv_as_ix86_tlsldm,,
4192 [$as_ix86_gas_32_opt],
4194 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4195 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then
4196 if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \
4197 || dis conftest 2>/dev/null | grep nop > /dev/null; then
4198 gcc_cv_as_ix86_tlsldm=yes
4202 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM,
4203 [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`],
4204 [Define to 1 if your assembler and linker support @tlsldm.])
4215 gcc_GAS_CHECK_FEATURE([R_386_GOT32X reloc],
4216 gcc_cv_as_ix86_got32x,,
4217 [$as_ix86_gas_32_opt],
4219 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4220 && test x$gcc_cv_readelf != x \
4221 && $gcc_cv_readelf --relocs --wide conftest.o 2>&1 \
4222 | grep R_386_GOT32X > /dev/null 2>&1 \
4223 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4224 if $gcc_cv_objdump -dw conftest 2>&1 \
4225 | grep 0xffffff > /dev/null 2>&1; then
4226 gcc_cv_as_ix86_got32x=no
4228 gcc_cv_as_ix86_got32x=yes
4232 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_GOT32X,
4233 [`if test x"$gcc_cv_as_ix86_got32x" = xyes; then echo 1; else echo 0; fi`],
4234 [Define 0/1 if your assembler and linker support @GOT.])
4236 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
4237 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],
4238 [$as_ix86_gas_32_opt],
4244 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
4245 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
4246 [Define true if the assembler supports '.long foo@GOTOFF'.])
4249 .section .text,"ax",@progbits
4251 .type _start, @function
4253 leal ld@tlsldm(%ecx), %eax
4254 call *___tls_get_addr@GOT(%ecx)
4255 leal gd@tlsgd(%ecx), %eax
4256 call *___tls_get_addr@GOT(%ecx)
4258 .section .tdata,"aw'$tls_section_flag'",@progbits
4266 gcc_GAS_CHECK_FEATURE([calling ___tls_get_addr via GOT],
4267 gcc_cv_as_ix86_tls_get_addr_via_got,,
4268 [$as_ix86_gas_32_opt],
4270 [if test x$gcc_cv_ld != x \
4271 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4272 gcc_cv_as_ix86_tls_get_addr_via_got=yes
4275 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLS_GET_ADDR_GOT,
4276 [`if test x"$gcc_cv_as_ix86_tls_get_addr_via_got" = xyes; then echo 1; else echo 0; fi`],
4277 [Define 0/1 if your assembler and linker support calling ___tls_get_addr via GOT.])
4281 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
4282 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
4284 addl r15 = @ltoffx(x#), gp
4286 ld8.mov r16 = [[r15]], x#],,
4287 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
4288 [Define if your assembler supports ltoffx and ldxmov relocations.])])
4296 gcc_GAS_CHECK_FEATURE([.machine directive support],
4297 gcc_cv_as_machine_directive,,,
4298 [ .machine ppc7400])
4299 if test x$gcc_cv_as_machine_directive != xyes; then
4300 echo "*** This target requires an assembler supporting \".machine\"" >&2
4301 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
4302 test x$build = x$target && exit 1
4308 *-*-aix*) conftest_s=' .machine "pwr5"
4311 *-*-darwin*) conftest_s=' .text
4313 *) conftest_s=' .machine power4
4318 gcc_GAS_CHECK_FEATURE([mfcr field support],
4319 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
4321 [AC_DEFINE(HAVE_AS_MFCRF, 1,
4322 [Define if your assembler supports mfcr field.])])
4325 *-*-aix*) conftest_s=' .machine "pwr5"
4328 *) conftest_s=' .machine power5
4333 gcc_GAS_CHECK_FEATURE([popcntb support],
4334 gcc_cv_as_powerpc_popcntb, [2,17,0],,
4336 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
4337 [Define if your assembler supports popcntb field.])])
4340 *-*-aix*) conftest_s=' .machine "pwr5x"
4343 *) conftest_s=' .machine power5
4348 gcc_GAS_CHECK_FEATURE([fp round support],
4349 gcc_cv_as_powerpc_fprnd, [2,17,0],,
4351 [AC_DEFINE(HAVE_AS_FPRND, 1,
4352 [Define if your assembler supports fprnd.])])
4355 *-*-aix*) conftest_s=' .machine "pwr6"
4358 *) conftest_s=' .machine power6
4363 gcc_GAS_CHECK_FEATURE([move fp gpr support],
4364 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
4366 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
4367 [Define if your assembler supports mffgpr and mftgpr.])])
4370 *-*-aix*) conftest_s=' .csect .text[[PR]]
4372 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
4376 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
4377 *) conftest_s=' .text
4379 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
4382 gcc_GAS_CHECK_FEATURE([rel16 relocs],
4383 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
4385 [AC_DEFINE(HAVE_AS_REL16, 1,
4386 [Define if your assembler supports R_PPC_REL16 relocs.])])
4389 *-*-aix*) conftest_s=' .machine "pwr6"
4392 *) conftest_s=' .machine power6
4397 gcc_GAS_CHECK_FEATURE([compare bytes support],
4398 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
4400 [AC_DEFINE(HAVE_AS_CMPB, 1,
4401 [Define if your assembler supports cmpb.])])
4404 *-*-aix*) conftest_s=' .machine "pwr6"
4407 *) conftest_s=' .machine power6
4412 gcc_GAS_CHECK_FEATURE([decimal float support],
4413 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
4415 [AC_DEFINE(HAVE_AS_DFP, 1,
4416 [Define if your assembler supports DFP instructions.])])
4419 *-*-aix*) conftest_s=' .machine "pwr7"
4422 *) conftest_s=' .machine power7
4427 gcc_GAS_CHECK_FEATURE([vector-scalar support],
4428 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
4430 [AC_DEFINE(HAVE_AS_VSX, 1,
4431 [Define if your assembler supports VSX instructions.])])
4434 *-*-aix*) conftest_s=' .machine "pwr7"
4437 *) conftest_s=' .machine power7
4442 gcc_GAS_CHECK_FEATURE([popcntd support],
4443 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
4445 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
4446 [Define if your assembler supports POPCNTD instructions.])])
4449 *-*-aix*) conftest_s=' .machine "pwr8"
4450 .csect .text[[PR]]';;
4451 *) conftest_s=' .machine power8
4455 gcc_GAS_CHECK_FEATURE([power8 support],
4456 gcc_cv_as_powerpc_power8, [2,19,2], -a32,
4458 [AC_DEFINE(HAVE_AS_POWER8, 1,
4459 [Define if your assembler supports POWER8 instructions.])])
4462 *-*-aix*) conftest_s=' .machine "pwr9"
4463 .csect .text[[PR]]';;
4464 *) conftest_s=' .machine power9
4468 gcc_GAS_CHECK_FEATURE([power9 support],
4469 gcc_cv_as_powerpc_power9, [2,19,2], -a32,
4471 [AC_DEFINE(HAVE_AS_POWER9, 1,
4472 [Define if your assembler supports POWER9 instructions.])])
4475 *-*-aix*) conftest_s=' .csect .text[[PR]]
4477 *) conftest_s=' .text
4481 gcc_GAS_CHECK_FEATURE([lwsync support],
4482 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
4484 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
4485 [Define if your assembler supports LWSYNC instructions.])])
4488 *-*-aix*) conftest_s=' .machine "476"
4491 *) conftest_s=' .machine "476"
4496 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
4497 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
4499 [AC_DEFINE(HAVE_AS_DCI, 1,
4500 [Define if your assembler supports the DCI/ICI instructions.])])
4502 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4503 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
4504 [.gnu_attribute 4,1],,
4505 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4506 [Define if your assembler supports .gnu_attribute.])])
4508 gcc_GAS_CHECK_FEATURE([tls marker support],
4509 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
4510 [ bl __tls_get_addr(x@tlsgd)],,
4511 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
4512 [Define if your assembler supports arg info for __tls_get_addr.])])
4514 gcc_GAS_CHECK_FEATURE([prologue entry point marker support],
4515 gcc_cv_as_powerpc_entry_markers, [2,26,0],-a64 --fatal-warnings,
4516 [ .reloc .,R_PPC64_ENTRY; nop],,
4517 [AC_DEFINE(HAVE_AS_ENTRY_MARKERS, 1,
4518 [Define if your assembler supports the R_PPC64_ENTRY relocation.])])
4522 gcc_GAS_CHECK_FEATURE([AIX .ref support],
4523 gcc_cv_as_aix_ref, [2,21,0],,
4524 [ .csect stuff[[rw]]
4530 [AC_DEFINE(HAVE_AS_REF, 1,
4531 [Define if your assembler supports .ref])])
4533 gcc_GAS_CHECK_FEATURE([AIX DWARF location lists section support],
4534 gcc_cv_as_aix_dwloc, [2,21,0],,
4539 [AC_DEFINE(HAVE_XCOFF_DWARF_EXTRAS, 1,
4540 [Define if your assembler supports AIX debug frame section label reference.])])
4546 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4547 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
4548 [ lw $4,%gp_rel(foo)($4)],,
4549 [if test x$target_cpu_default = x
4550 then target_cpu_default=MASK_EXPLICIT_RELOCS
4551 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
4554 gcc_GAS_CHECK_FEATURE([-mno-shared support],
4555 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
4556 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
4557 [Define if the assembler understands -mno-shared.])])
4559 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4560 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
4561 [.gnu_attribute 4,1],,
4562 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4563 [Define if your assembler supports .gnu_attribute.])])
4565 gcc_GAS_CHECK_FEATURE([.module support],
4566 gcc_cv_as_mips_dot_module,,[-32],
4569 [AC_DEFINE(HAVE_AS_DOT_MODULE, 1,
4570 [Define if your assembler supports .module.])])
4571 if test x$gcc_cv_as_mips_dot_module = xno \
4572 && test x$with_fp_32 != x; then
4574 [Requesting --with-fp-32= requires assembler support for .module.])
4577 gcc_GAS_CHECK_FEATURE([.micromips support],
4578 gcc_cv_as_micromips_support,,[--fatal-warnings],
4580 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
4581 [Define if your assembler supports the .set micromips directive])])
4583 gcc_GAS_CHECK_FEATURE([.dtprelword support],
4584 gcc_cv_as_mips_dtprelword, [2,18,0],,
4585 [.section .tdata,"awT",@progbits
4589 .dtprelword x+0x8000],,
4590 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
4591 [Define if your assembler supports .dtprelword.])])
4593 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
4594 gcc_cv_as_mips_dspr1_mult,,,
4604 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
4605 [Define if your assembler supports DSPR1 mult.])])
4607 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
4608 gcc_cv_as_ld_jalr_reloc=no
4609 if test $gcc_cv_as_mips_explicit_relocs = yes; then
4610 if test $in_tree_ld = yes ; then
4611 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
4612 && test $in_tree_ld_is_elf = yes; then
4613 gcc_cv_as_ld_jalr_reloc=yes
4615 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4616 echo ' .ent x' > conftest.s
4617 echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s
4618 echo ' lw $25,%call16(y)($28)' >> conftest.s
4619 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
4620 echo '1: jalr $25' >> conftest.s
4621 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
4622 echo '1: jalr $25' >> conftest.s
4623 echo ' .end x' >> conftest.s
4624 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4625 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4626 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4627 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4628 gcc_cv_as_ld_jalr_reloc=yes
4634 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4635 if test x$target_cpu_default = x; then
4636 target_cpu_default=MASK_RELAX_PIC_CALLS
4638 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4641 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4643 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4644 [gcc_cv_ld_mips_personality_relaxation],
4645 [gcc_cv_ld_mips_personality_relaxation=no
4646 if test $in_tree_ld = yes ; then
4647 if test "$gcc_cv_gld_major_version" -eq 2 \
4648 -a "$gcc_cv_gld_minor_version" -ge 21 \
4649 -o "$gcc_cv_gld_major_version" -gt 2; then
4650 gcc_cv_ld_mips_personality_relaxation=yes
4652 elif test x$gcc_cv_as != x \
4653 -a x$gcc_cv_ld != x \
4654 -a x$gcc_cv_readelf != x ; then
4655 cat > conftest.s <<EOF
4657 .cfi_personality 0x80,indirect_ptr
4664 .section .data,"aw",@progbits
4668 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4669 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4670 if $gcc_cv_readelf -d conftest 2>&1 \
4671 | grep TEXTREL > /dev/null 2>&1; then
4673 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4674 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4677 gcc_cv_ld_mips_personality_relaxation=yes
4681 rm -f conftest.s conftest.o conftest])
4682 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4683 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4684 [Define if your linker can relax absolute .eh_frame personality
4685 pointers into PC-relative form.])
4688 gcc_GAS_CHECK_FEATURE([-mnan= support],
4689 gcc_cv_as_mips_nan,,
4691 [AC_DEFINE(HAVE_AS_NAN, 1,
4692 [Define if the assembler understands -mnan=.])])
4693 if test x$gcc_cv_as_mips_nan = xno \
4694 && test x$with_nan != x; then
4696 [Requesting --with-nan= requires assembler support for -mnan=])
4700 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4701 gcc_cv_as_s390_gnu_attribute, [2,18,0],,
4702 [.gnu_attribute 8,1],,
4703 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4704 [Define if your assembler supports .gnu_attribute.])])
4705 gcc_GAS_CHECK_FEATURE([.machine and .machinemode support],
4706 gcc_cv_as_s390_machine_machinemode, [2,24,0],,
4711 [AC_DEFINE(HAVE_AS_MACHINE_MACHINEMODE, 1,
4712 [Define if your assembler supports .machine and .machinemode.])])
4713 gcc_GAS_CHECK_FEATURE([architecture modifiers support],
4714 gcc_cv_as_s390_architecture_modifiers, [2,26,0],,
4715 [ .machine z13+vx ],,
4716 [AC_DEFINE(HAVE_AS_ARCHITECTURE_MODIFIERS, 1,
4717 [Define if your assembler supports architecture modifiers.])])
4721 # Mips and HP-UX need the GNU assembler.
4722 # Linux on IA64 might be able to use the Intel assembler.
4725 mips*-*-* | *-*-hpux* )
4726 if test x$gas_flag = xyes \
4727 || test x"$host" != x"$build" \
4728 || test ! -x "$gcc_cv_as" \
4729 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4732 echo "*** This configuration requires the GNU assembler" >&2
4738 # ??? Not all targets support dwarf2 debug_line, even within a version
4739 # of gas. Moreover, we need to emit a valid instruction to trigger any
4740 # info to the output file. So, as supported targets are added to gas 2.11,
4741 # add some instruction here to (also) show we expect this might work.
4742 # ??? Once 2.11 is released, probably need to add first known working
4743 # version to the per-target configury.
4745 aarch64 | alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze \
4746 | mips | nios2 | pa | riscv | rs6000 | score | sparc | spu | tilegx \
4747 | tilepro | visium | xstormy16 | xtensa)
4757 if test x"$insn" != x; then
4759 .file 1 \"conftest.s\"
4762 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4763 gcc_cv_as_dwarf2_debug_line,
4764 [elf,2,11,0],, [$conftest_s],
4765 [if test x$gcc_cv_objdump != x \
4766 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4767 | grep debug_line > /dev/null 2>&1; then
4768 gcc_cv_as_dwarf2_debug_line=yes
4771 # The .debug_line file table must be in the exact order that
4772 # we specified the files, since these indices are also used
4773 # by DW_AT_decl_file. Approximate this test by testing if
4774 # the assembler bitches if the same index is assigned twice.
4775 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4776 gcc_cv_as_dwarf2_file_buggy,,,
4780 if test $gcc_cv_as_dwarf2_debug_line = yes \
4781 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4782 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4783 [Define if your assembler supports dwarf2 .file/.loc directives,
4784 and preserves file table indices exactly as given.])
4787 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4788 gcc_cv_as_gdwarf2_flag,
4789 [elf,2,11,0], [--gdwarf2], [$insn],,
4790 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4791 [Define if your assembler supports the --gdwarf2 option.])])
4793 gcc_GAS_CHECK_FEATURE([--gstabs option],
4794 gcc_cv_as_gstabs_flag,
4795 [elf,2,11,0], [--gstabs], [$insn],,
4796 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4797 [Define if your assembler supports the --gstabs option.])])
4799 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4800 gcc_cv_as_debug_prefix_map_flag,
4801 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4802 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4803 [Define if your assembler supports the --debug-prefix-map option.])])
4806 gcc_GAS_CHECK_FEATURE([compressed debug sections],
4807 gcc_cv_as_compress_debug,,,,
4808 [# gas compiled without zlib cannot compress debug sections and warns
4809 # about it, but still exits successfully. So check for this, too.
4810 if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null
4812 gcc_cv_as_compress_debug=0
4813 # Since binutils 2.26, gas supports --compress-debug-sections=type,
4814 # defaulting to the ELF gABI format.
4815 elif $gcc_cv_as --compress-debug-sections=zlib-gnu -o conftest.o conftest.s > /dev/null 2>&1
4817 gcc_cv_as_compress_debug=2
4818 gcc_cv_as_compress_debug_option="--compress-debug-sections"
4819 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
4820 # Before binutils 2.26, gas only supported --compress-debug-options and
4821 # emitted the traditional GNU format.
4822 elif $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s > /dev/null 2>&1
4824 gcc_cv_as_compress_debug=1
4825 gcc_cv_as_compress_debug_option="--compress-debug-sections"
4826 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
4828 gcc_cv_as_compress_debug=0
4830 AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug,
4831 [Define to the level of your assembler's compressed debug section support.])
4832 AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option",
4833 [Define to the assembler option to enable compressed debug sections.])
4834 AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option",
4835 [Define to the assembler option to disable compressed debug sections.])
4837 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4840 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4841 [Define if your assembler supports .lcomm with an alignment field.])])
4843 if test x$with_sysroot = x && test x$host = x$target \
4844 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4845 && test "$prefix" != "NONE"; then
4846 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4847 [Define to PREFIX/include if cpp should also search that directory.])
4850 # Determine the version of glibc, if any, used on the target.
4851 AC_MSG_CHECKING([for target glibc version])
4852 AC_ARG_WITH([glibc-version],
4853 [AS_HELP_STRING([--with-glibc-version=M.N],
4854 [assume GCC used with glibc version M.N or later])], [
4855 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
4856 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
4857 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
4859 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
4861 glibc_version_major=0
4862 glibc_version_minor=0
4863 [if test -f $target_header_dir/features.h \
4864 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
4865 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
4866 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
4867 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
4869 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
4870 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MAJOR], [$glibc_version_major],
4871 [GNU C Library major version number used on the target, or 0.])
4872 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MINOR], [$glibc_version_minor],
4873 [GNU C Library minor version number used on the target, or 0.])
4875 AC_ARG_ENABLE(gnu-unique-object,
4876 [AS_HELP_STRING([--enable-gnu-unique-object],
4877 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4878 [case $enable_gnu_unique_object in
4880 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4881 Valid choices are 'yes' and 'no'.]) ;;
4883 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4885 [.type foo, '$target_type_format_char'gnu_unique_object],,
4886 # We need to unquote above to to use the definition from config.gcc.
4887 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4888 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
4890 if test x$enable_gnu_unique_object = xyes; then
4891 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4892 [Define if your assembler supports @gnu_unique_object.])
4895 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4896 [gcc_cv_as_line_zero],
4897 [gcc_cv_as_line_zero=no
4898 if test $in_tree_gas = yes; then
4899 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4900 elif test "x$gcc_cv_as" != x; then
4901 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4902 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4903 test "x`cat conftest.out`" = x
4905 gcc_cv_as_line_zero=yes
4907 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4908 cat conftest.s >&AS_MESSAGE_LOG_FD
4909 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4910 cat conftest.out >&AS_MESSAGE_LOG_FD
4912 rm -f conftest.o conftest.s conftest.out
4914 if test "x$gcc_cv_as_line_zero" = xyes; then
4915 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4916 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4919 AC_MSG_CHECKING(support for thin archives)
4920 thin_archive_support=no
4921 echo 'int main (void) { return 0; }' > conftest.c
4922 if ($AR --version | sed 1q | grep "GNU ar" \
4923 && $CC $CFLAGS -c conftest.c \
4924 && $AR rcT conftest.a conftest.o \
4925 && $CC $CFLAGS $LDFLAGS -o conftest conftest.a) >/dev/null 2>&1; then
4926 thin_archive_support=yes
4928 rm -f conftest.c conftest.o conftest.a conftest
4929 AC_MSG_RESULT($thin_archive_support)
4930 AC_SUBST(thin_archive_support)
4932 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4933 gcc_cv_ld_eh_frame_hdr=no
4934 if test $in_tree_ld = yes ; then
4935 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4936 && test $in_tree_ld_is_elf = yes; then
4937 gcc_cv_ld_eh_frame_hdr=yes
4939 elif test x$gcc_cv_ld != x; then
4940 if echo "$ld_ver" | grep GNU > /dev/null; then
4941 # Check if linker supports --eh-frame-hdr option
4942 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4943 gcc_cv_ld_eh_frame_hdr=yes
4948 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4949 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4950 gcc_cv_ld_eh_frame_hdr=yes
4956 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4957 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4958 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4959 [Define if your linker supports .eh_frame_hdr.])
4961 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4963 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
4964 gcc_cv_ld_eh_frame_ciev3=no
4965 if test $in_tree_ld = yes ; then
4966 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4967 && test $in_tree_ld_is_elf = yes; then
4968 gcc_cv_ld_eh_frame_ciev3=yes
4970 elif test x$gcc_cv_ld != x; then
4971 if echo "$ld_ver" | grep GNU > /dev/null; then
4972 gcc_cv_ld_eh_frame_ciev3=yes
4973 if test 0"$ld_date" -lt 20040513; then
4974 if test -n "$ld_date"; then
4975 # If there was date string, but was earlier than 2004-05-13, fail
4976 gcc_cv_ld_eh_frame_ciev3=no
4977 elif test "$ld_vers_major" -lt 2; then
4978 gcc_cv_ld_eh_frame_ciev3=no
4979 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
4980 gcc_cv_ld_eh_frame_ciev3=no
4986 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
4987 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
4988 gcc_cv_ld_eh_frame_ciev3=yes
4994 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
4995 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
4996 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
4997 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
4999 AC_MSG_CHECKING(linker position independent executable support)
5001 if test $in_tree_ld = yes ; then
5003 # Full PIE support on Solaris was only introduced in gld 2.26.
5004 *-*-solaris2*) gcc_gld_pie_min_version=26 ;;
5005 *) gcc_gld_pie_min_version=15 ;;
5007 if test "$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 \
5008 && test $in_tree_ld_is_elf = yes; then
5011 elif test x$gcc_cv_ld != x; then
5012 # Check if linker supports -pie option
5013 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
5017 if echo "$ld_ver" | grep GNU > /dev/null \
5018 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
5025 *-*-solaris2.1[[1-9]]*)
5026 # Solaris 11.x and Solaris 12 added PIE support.
5027 if $gcc_cv_ld -z help 2>&1 | grep -- type.*pie > /dev/null; then
5034 if test x"$gcc_cv_ld_pie" = xyes; then
5035 AC_DEFINE(HAVE_LD_PIE, 1,
5036 [Define if your linker supports PIE option.])
5038 AC_MSG_RESULT($gcc_cv_ld_pie)
5040 AC_MSG_CHECKING(linker PIE support with copy reloc)
5041 gcc_cv_ld_pie_copyreloc=no
5042 if test $gcc_cv_ld_pie = yes ; then
5043 if test $in_tree_ld = yes ; then
5044 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
5045 gcc_cv_ld_pie_copyreloc=yes
5047 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5048 # Check if linker supports -pie option with copy reloc
5050 i?86-*-linux* | x86_64-*-linux*)
5051 cat > conftest1.s <<EOF
5054 .type a_glob, @object
5059 cat > conftest2.s <<EOF
5062 .type main, @function
5064 movl %eax, a_glob(%rip)
5067 .section .data.rel,"aw",@progbits
5072 if $gcc_cv_as --64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5073 && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \
5074 && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5075 && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then
5076 gcc_cv_ld_pie_copyreloc=yes
5078 rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s
5083 AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC,
5084 [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`],
5085 [Define 0/1 if your linker supports -pie option with copy reloc.])
5086 AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc)
5088 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
5089 gcc_cv_ld_eh_gc_sections=no
5090 if test $in_tree_ld = yes ; then
5091 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
5092 && test $in_tree_ld_is_elf = yes; then
5093 gcc_cv_ld_eh_gc_sections=yes
5095 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
5096 cat > conftest.s <<EOF
5099 .type _start, @function
5102 .size _start, .-_start
5103 .section .text.foo,"ax",@progbits
5104 .type foo, @function
5108 .section .gcc_except_table.foo,"a",@progbits
5111 .section .eh_frame,"a",@progbits
5114 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5115 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5116 | grep "gc-sections option ignored" > /dev/null; then
5117 gcc_cv_ld_eh_gc_sections=no
5118 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5119 | grep gcc_except_table > /dev/null; then
5120 gcc_cv_ld_eh_gc_sections=yes
5121 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
5122 if test x$gcc_cv_as_comdat_group != xyes; then
5123 gcc_cv_ld_eh_gc_sections=no
5124 cat > conftest.s <<EOF
5127 .type _start, @function
5130 .size _start, .-_start
5131 .section .gnu.linkonce.t.foo,"ax",@progbits
5132 .type foo, @function
5136 .section .gcc_except_table.foo,"a",@progbits
5139 .section .eh_frame,"a",@progbits
5142 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5143 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5144 | grep "gc-sections option ignored" > /dev/null; then
5145 gcc_cv_ld_eh_gc_sections=no
5146 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5147 | grep gcc_except_table > /dev/null; then
5148 gcc_cv_ld_eh_gc_sections=yes
5154 rm -f conftest.s conftest.o conftest
5158 # ??? This apparently exposes a binutils bug with PC-relative relocations.
5159 gcc_cv_ld_eh_gc_sections=no
5162 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
5163 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
5164 [Define if your linker supports garbage collection of
5165 sections in presence of EH frames.])
5167 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
5169 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
5170 gcc_cv_ld_eh_gc_sections_bug=no
5171 if test $in_tree_ld = yes ; then
5172 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
5173 && test $in_tree_ld_is_elf = yes; then
5174 gcc_cv_ld_eh_gc_sections_bug=yes
5176 elif test x$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
5177 gcc_cv_ld_eh_gc_sections_bug=yes
5178 cat > conftest.s <<EOF
5181 .type _start, @function
5184 .size _start, .-_start
5185 .section .text.startup.foo,"ax",@progbits
5186 .type foo, @function
5190 .section .gcc_except_table.foo,"a",@progbits
5193 .section .eh_frame,"a",@progbits
5196 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5197 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5198 | grep "gc-sections option ignored" > /dev/null; then
5200 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5201 | grep gcc_except_table > /dev/null; then
5202 gcc_cv_ld_eh_gc_sections_bug=no
5205 rm -f conftest.s conftest.o conftest
5207 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
5208 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
5209 [Define if your linker has buggy garbage collection of
5210 sections support when .text.startup.foo like sections are used.])
5212 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
5214 AC_MSG_CHECKING(linker for compressed debug sections)
5215 # gold/gld support compressed debug sections since binutils 2.19/2.21
5216 # In binutils 2.26, gld gained support for the ELF gABI format.
5217 if test $in_tree_ld = yes ; then
5218 gcc_cv_ld_compress_debug=0
5219 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 19 -o "$gcc_cv_gld_major_version" -gt 2 \
5220 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = yes; then
5221 gcc_cv_ld_compress_debug=2
5222 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5223 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 26 -o "$gcc_cv_gld_major_version" -gt 2 \
5224 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = no; then
5225 gcc_cv_ld_compress_debug=3
5226 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5227 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2 \
5228 && test $in_tree_ld_is_elf = yes; then
5229 gcc_cv_ld_compress_debug=1
5231 elif echo "$ld_ver" | grep GNU > /dev/null; then
5232 if test "$ld_vers_major" -lt 2 \
5233 || test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 21; then
5234 gcc_cv_ld_compress_debug=0
5235 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
5236 gcc_cv_ld_compress_debug=1
5238 gcc_cv_ld_compress_debug=3
5239 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5241 if test $ld_is_gold = yes; then
5242 gcc_cv_ld_compress_debug=2
5243 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5249 # Introduced in Solaris 11.2.
5250 if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then
5251 gcc_cv_ld_compress_debug=3
5252 gcc_cv_ld_compress_debug_option="-z compress-sections"
5254 gcc_cv_ld_compress_debug=0
5258 # Assume linkers other than GNU ld don't support compessed debug
5260 gcc_cv_ld_compress_debug=0
5265 AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug,
5266 [Define to the level of your linker's compressed debug section support.])
5267 AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option",
5268 [Define to the linker option to enable compressed debug sections.])
5269 AC_MSG_RESULT($gcc_cv_ld_compress_debug)
5271 if test x"$ld64_flag" = x"yes"; then
5273 # Set defaults for possibly untestable items.
5274 gcc_cv_ld64_export_dynamic=0
5276 if test "$build" = "$host"; then
5282 # On Darwin, because of FAT library support, it is often possible to execute
5283 # exes from compatible archs even when the host differs from the build system.
5284 case "$build","$host" in
5285 x86_64-*-darwin*,i?86-*-darwin* | powerpc64*-*-darwin*,powerpc*-*-darwin*)
5290 # If the configurer specified a minimum ld64 version to be supported, then use
5291 # that to determine feature support.
5292 if test x"${gcc_cv_ld64_version}" != x; then
5293 AC_MSG_CHECKING(ld64 specified version)
5294 gcc_cv_ld64_major=`echo "$gcc_cv_ld64_version" | sed -e 's/\..*//'`
5295 AC_MSG_RESULT($gcc_cv_ld64_major)
5296 if test "$gcc_cv_ld64_major" -ge 236; then
5297 gcc_cv_ld64_export_dynamic=1
5299 elif test -x "$gcc_cv_ld" -a "$darwin_try_test" -eq 1; then
5300 # If the version was not specified, try to find it.
5301 AC_MSG_CHECKING(linker version)
5302 if test x"${gcc_cv_ld64_version}" = x; then
5303 gcc_cv_ld64_version=`$gcc_cv_ld -v 2>&1 | grep ld64 | sed s/.*ld64-// | awk '{print $1}'`
5305 AC_MSG_RESULT($gcc_cv_ld64_version)
5307 AC_MSG_CHECKING(linker for -export_dynamic support)
5308 gcc_cv_ld64_export_dynamic=1
5309 if $gcc_cv_ld -export_dynamic < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then
5310 gcc_cv_ld64_export_dynamic=0
5312 AC_MSG_RESULT($gcc_cv_ld64_export_dynamic)
5315 if test x"${gcc_cv_ld64_version}" != x; then
5316 AC_DEFINE_UNQUOTED(LD64_VERSION, "${gcc_cv_ld64_version}",
5317 [Define to ld64 version.])
5320 AC_DEFINE_UNQUOTED(LD64_HAS_EXPORT_DYNAMIC, $gcc_cv_ld64_export_dynamic,
5321 [Define to 1 if ld64 supports '-export_dynamic'.])
5328 AC_CACHE_CHECK(linker --as-needed support,
5329 gcc_cv_ld_as_needed,
5330 [gcc_cv_ld_as_needed=no
5331 gcc_cv_ld_as_needed_option='--as-needed'
5332 gcc_cv_ld_no_as_needed_option='--no-as-needed'
5333 if test $in_tree_ld = yes ; then
5334 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5335 && test $in_tree_ld_is_elf = yes; then
5336 gcc_cv_ld_as_needed=yes
5338 elif test x$gcc_cv_ld != x; then
5339 # Check if linker supports --as-needed and --no-as-needed options
5340 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
5341 gcc_cv_ld_as_needed=yes
5344 # Solaris 2 ld always supports -z ignore/-z record.
5346 gcc_cv_ld_as_needed=yes
5347 gcc_cv_ld_as_needed_option="-z ignore"
5348 gcc_cv_ld_no_as_needed_option="-z record"
5353 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
5354 # dl_iterate_phdr, i.e. since Solaris 11.
5356 *-*-solaris2.1[[1-9]]*)
5358 i?86-*-* | x86_64-*-*)
5359 if echo "$ld_ver" | grep GNU > /dev/null; then
5360 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
5361 gcc_cv_ld_as_needed=no
5367 gcc_cv_ld_as_needed=no
5371 if test x"$gcc_cv_ld_as_needed" = xyes; then
5372 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
5373 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
5374 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
5375 [Define to the linker option to ignore unused dependencies.])
5376 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
5377 [Define to the linker option to keep unused dependencies.])
5380 AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities)
5381 saved_LDFLAGS="$LDFLAGS"
5382 for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do
5383 LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map"
5384 AC_LINK_IFELSE([int main(void) {return 0;}],
5385 [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no])
5387 LDFLAGS="$saved_LDFLAGS"
5388 if test "x$gcc_cv_ld_clearcap" = xyes; then
5389 AC_DEFINE([HAVE_LD_CLEARCAP], 1,
5390 [Define if the linker supports clearing hardware capabilities via mapfile.])
5391 AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map])
5393 AC_MSG_RESULT($gcc_cv_ld_clearcap)
5399 emul_name="-melf32lppc"
5402 emul_name="-melf32ppc"
5405 AC_CACHE_CHECK(linker .gnu.attributes long double support,
5407 [gcc_cv_ld_ppc_attr=no
5408 if test x"$ld_is_gold" = xyes; then
5409 gcc_cv_ld_ppc_attr=yes
5410 elif test $in_tree_ld = yes ; then
5411 if test "$gcc_cv_gld_major_version" -eq 2 \
5412 -a "$gcc_cv_gld_minor_version" -ge 28 \
5413 -o "$gcc_cv_gld_major_version" -gt 2; then
5414 gcc_cv_ld_ppc_attr=yes
5416 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5417 # check that merging the long double .gnu_attribute doesn't warn
5418 cat > conftest1.s <<EOF
5421 cat > conftest2.s <<EOF
5424 if $gcc_cv_as -a32 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5425 && $gcc_cv_as -a32 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5426 && $gcc_cv_ld $emul_name -r -o conftest.o conftest1.o conftest2.o > /dev/null 2> conftest.err \
5427 && test ! -s conftest.err; then
5428 gcc_cv_ld_ppc_attr=yes
5430 rm -f conftest.err conftest.o conftest1.o conftest2.o conftest1.s conftest2.s
5433 if test x$gcc_cv_ld_ppc_attr = xyes; then
5434 AC_DEFINE(HAVE_LD_PPC_GNU_ATTR_LONG_DOUBLE, 1,
5435 [Define if your PowerPC linker has .gnu.attributes long double support.])
5440 case "$target:$tm_file" in
5441 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
5444 emul_name="-melf64lppc"
5447 emul_name="-melf64ppc"
5450 emul_name="-melf64ppc_fbsd"
5453 AC_CACHE_CHECK(linker support for omitting dot symbols,
5454 gcc_cv_ld_no_dot_syms,
5455 [gcc_cv_ld_no_dot_syms=no
5456 if test x"$ld_is_gold" = xyes; then
5457 gcc_cv_ld_no_dot_syms=yes
5458 elif test $in_tree_ld = yes ; then
5459 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
5460 gcc_cv_ld_no_dot_syms=yes
5462 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5463 cat > conftest1.s <<EOF
5467 cat > conftest2.s <<EOF
5468 .section ".opd","aw"
5473 .quad .LEfoo,.TOC.@tocbase,0
5479 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5480 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5481 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
5482 gcc_cv_ld_no_dot_syms=yes
5484 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
5487 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
5488 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
5489 [Define if your PowerPC64 linker only needs function descriptor syms.])
5492 AC_CACHE_CHECK(linker large toc support,
5493 gcc_cv_ld_large_toc,
5494 [gcc_cv_ld_large_toc=no
5495 if test x"$ld_is_gold" = xyes; then
5496 gcc_cv_ld_large_toc=yes
5497 elif test $in_tree_ld = yes ; then
5498 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
5499 gcc_cv_ld_large_toc=yes
5501 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5502 cat > conftest.s <<EOF
5503 .section ".tbss","awT",@nobits
5509 addis 9,13,ie0@got@tprel@ha
5510 ld 9,ie0@got@tprel@l(9)
5512 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5513 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
5514 gcc_cv_ld_large_toc=yes
5516 rm -f conftest conftest.o conftest.s
5519 if test x"$gcc_cv_ld_large_toc" = xyes; then
5520 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5521 [Define if your PowerPC64 linker supports a large TOC.])
5524 AC_CACHE_CHECK(linker toc pointer alignment,
5525 gcc_cv_ld_toc_align,
5526 [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then
5527 cat > conftest.s <<EOF
5532 .section .data.rel.ro,"aw",@progbits
5537 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5538 && $gcc_cv_ld $emul_name -z norelro -o conftest conftest.o > /dev/null 2>&1; then
5539 gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'`
5541 rm -f conftest conftest.o conftest.s
5544 if test -n "$gcc_cv_ld_toc_align" && test $gcc_cv_ld_toc_align -gt 8; then
5545 AC_DEFINE_UNQUOTED(POWERPC64_TOC_POINTER_ALIGNMENT, $gcc_cv_ld_toc_align,
5546 [Define to .TOC. alignment forced by your linker.])
5553 AC_CACHE_CHECK(linker large toc support,
5554 gcc_cv_ld_large_toc,
5555 [gcc_cv_ld_large_toc=no
5556 if test x$gcc_cv_as != x ; then
5557 cat > conftest.s <<EOF
5567 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
5568 gcc_cv_ld_large_toc=yes
5570 rm -f conftest conftest.o conftest.s
5573 if test x"$gcc_cv_ld_large_toc" = xyes; then
5574 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5575 [Define if your PowerPC64 linker supports a large TOC.])
5580 AC_CACHE_CHECK(linker --build-id support,
5582 [gcc_cv_ld_buildid=no
5583 if test $in_tree_ld = yes ; then
5584 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5585 "$gcc_cv_gld_minor_version" -ge 18 -o \
5586 "$gcc_cv_gld_major_version" -gt 2 \
5587 && test $in_tree_ld_is_elf = yes; then
5588 gcc_cv_ld_buildid=yes
5590 elif test x$gcc_cv_ld != x; then
5591 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
5592 gcc_cv_ld_buildid=yes
5595 if test x"$gcc_cv_ld_buildid" = xyes; then
5596 AC_DEFINE(HAVE_LD_BUILDID, 1,
5597 [Define if your linker supports --build-id.])
5600 AC_ARG_ENABLE(linker-build-id,
5601 [AS_HELP_STRING([--enable-linker-build-id],
5602 [compiler will always pass --build-id to linker])],
5604 enable_linker_build_id=no)
5606 if test x"$enable_linker_build_id" = xyes; then
5607 if test x"$gcc_cv_ld_buildid" = xyes; then
5608 AC_DEFINE(ENABLE_LD_BUILDID, 1,
5609 [Define if gcc should always pass --build-id to linker.])
5611 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
5615 # In binutils 2.21, GNU ld gained support for new emulations fully
5616 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
5617 AC_CACHE_CHECK(linker *_sol2 emulation support,
5618 gcc_cv_ld_sol2_emulation,
5619 [gcc_cv_ld_sol2_emulation=no
5620 if test $in_tree_ld = yes ; then
5621 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5622 "$gcc_cv_gld_minor_version" -ge 21 -o \
5623 "$gcc_cv_gld_major_version" -gt 2 \
5624 && test $in_tree_ld_is_elf = yes; then
5625 gcc_cv_ld_sol2_emulation=yes
5627 elif test x$gcc_cv_ld != x; then
5628 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
5629 grep _sol2 > /dev/null; then
5630 gcc_cv_ld_sol2_emulation=yes
5633 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
5634 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
5635 [Define if your linker supports the *_sol2 emulations.])
5638 AC_CACHE_CHECK(linker --sysroot support,
5640 [gcc_cv_ld_sysroot=no
5641 if test $in_tree_ld = yes ; then
5642 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
5643 gcc_cv_ld_sysroot=yes
5645 elif test x$gcc_cv_ld != x; then
5646 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
5647 gcc_cv_ld_sysroot=yes
5650 if test x"$gcc_cv_ld_sysroot" = xyes; then
5651 AC_DEFINE(HAVE_LD_SYSROOT, 1,
5652 [Define if your linker supports --sysroot.])
5657 # Check for system-provided CRTs on Solaris 11.x and Solaris 12.
5658 AC_CACHE_CHECK([system-provided CRTs on Solaris],
5659 gcc_cv_solaris_crts,
5660 [gcc_cv_solaris_crts=no
5661 if test x$host != x$target; then
5662 if test "x$with_sysroot" = xyes; then
5663 target_sysroot="${test_exec_prefix}/${target_noncanonical}/sys-root"
5665 target_sysroot="${with_sysroot}"
5668 target_libdir="$target_sysroot/usr/lib"
5669 # At the time they were added, gcrt1.o became a symlink for backwards
5670 # compatibility on x86, while crt1.o was added on sparc, so check for that.
5672 i?86-*-solaris2* | x86_64-*-solaris2*)
5673 if test -h "$target_libdir/gcrt1.o"; then gcc_cv_solaris_crts=yes; fi
5676 if test -f "$target_libdir/crt1.o"; then gcc_cv_solaris_crts=yes; fi
5681 if test x$gcc_cv_solaris_crts = xyes; then
5682 AC_DEFINE(HAVE_SOLARIS_CRTS, 1,
5683 [Define if the system-provided CRTs are present on Solaris.])
5686 # Test for stack protector support in target C library.
5687 AC_CACHE_CHECK(__stack_chk_fail in target C library,
5688 gcc_cv_libc_provides_ssp,
5689 [gcc_cv_libc_provides_ssp=no
5692 # All versions of musl provide stack protector
5693 gcc_cv_libc_provides_ssp=yes;;
5694 *-*-linux* | *-*-kfreebsd*-gnu)
5695 # glibc 2.4 and later provides __stack_chk_fail and
5696 # either __stack_chk_guard, or TLS access to stack guard canary.
5697 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
5698 [if test -f $target_header_dir/features.h \
5699 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
5700 $target_header_dir/features.h > /dev/null; then
5701 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
5702 $target_header_dir/features.h > /dev/null && \
5703 test -f $target_header_dir/bits/uClibc_config.h && \
5704 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
5705 $target_header_dir/bits/uClibc_config.h > /dev/null; then
5706 gcc_cv_libc_provides_ssp=yes
5708 # all versions of Bionic support stack protector
5709 elif test -f $target_header_dir/sys/cdefs.h \
5710 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
5711 $target_header_dir/sys/cdefs.h > /dev/null; then
5712 gcc_cv_libc_provides_ssp=yes
5716 # Avoid complicated tests (see
5717 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
5718 # simply assert that glibc does provide this, which is true for all
5719 # realistically usable GNU/Hurd configurations.
5720 # All supported versions of musl provide it as well
5721 gcc_cv_libc_provides_ssp=yes;;
5722 *-*-darwin* | *-*-freebsd* | *-*-netbsd*)
5723 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
5724 [echo "no __stack_chk_fail on this target"])
5726 *) gcc_cv_libc_provides_ssp=no ;;
5729 if test x$gcc_cv_libc_provides_ssp = xyes; then
5730 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
5731 [Define if your target C library provides stack protector support])
5734 # Check whether --enable-default-ssp was given.
5735 AC_ARG_ENABLE(default-ssp,
5736 [AS_HELP_STRING([--enable-default-ssp],
5737 [enable Stack Smashing Protection as default])],[
5738 if test x$gcc_cv_libc_provides_ssp = xyes; then
5740 ia64*-*-*) enable_default_ssp=no ;;
5741 *) enable_default_ssp=$enableval ;;
5744 enable_default_ssp=no
5746 enable_default_ssp=no)
5747 if test x$enable_default_ssp = xyes ; then
5748 AC_DEFINE(ENABLE_DEFAULT_SSP, 1,
5749 [Define if your target supports default stack protector and it is enabled.])
5751 AC_SUBST([enable_default_ssp])
5753 # Test for <sys/sdt.h> on the target.
5754 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
5755 AC_MSG_CHECKING(sys/sdt.h in the target C library)
5757 if test -f $target_header_dir/sys/sdt.h; then
5759 AC_DEFINE(HAVE_SYS_SDT_H, 1,
5760 [Define if your target C library provides sys/sdt.h])
5762 AC_MSG_RESULT($have_sys_sdt_h)
5764 # Check if TFmode long double should be used by default or not.
5765 # Some glibc targets used DFmode long double, but with glibc 2.4
5766 # and later they can use TFmode.
5768 powerpc*-*-linux* | \
5772 AC_ARG_WITH(long-double-128,
5773 [AS_HELP_STRING([--with-long-double-128],
5774 [use 128-bit long double by default])],
5775 gcc_cv_target_ldbl128="$with_long_double_128",
5776 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
5777 [gcc_cv_target_ldbl128=no
5778 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
5779 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
5780 && gcc_cv_target_ldbl128=yes
5784 if test x$gcc_cv_target_ldbl128 = xyes; then
5785 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
5786 [Define if TFmode long double should be the default])
5789 # Check if the target LIBC supports exporting the AT_PLATFORM and AT_HWCAP
5790 # values in the TCB. Currently, only GLIBC 2.23 and later support this.
5791 gcc_cv_libc_provides_hwcap_in_tcb=no
5794 GCC_GLIBC_VERSION_GTE_IFELSE([2], [23], [gcc_cv_libc_provides_hwcap_in_tcb=yes], )
5797 if test x$gcc_cv_libc_provides_hwcap_in_tcb = xyes; then
5798 AC_DEFINE(TARGET_LIBC_PROVIDES_HWCAP_IN_TCB, 1,
5799 [Define if your target C Library provides the AT_HWCAP value in the TCB])
5802 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
5803 gcc_cv_target_dl_iterate_phdr=unknown
5805 # Restrict to Solaris 11+. While most of the Solaris 11 linker changes
5806 # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in
5807 # libdl there, both complicating its use and breaking compatibility
5808 # between Solaris 10 updates.
5809 *-*-solaris2.1[[1-9]]*)
5810 # <link.h> needs both a dl_iterate_phdr declaration and support for
5811 # compilation with largefile support.
5812 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
5813 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
5814 gcc_cv_target_dl_iterate_phdr=yes
5816 gcc_cv_target_dl_iterate_phdr=no
5819 *-*-dragonfly* | *-*-freebsd*)
5820 if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then
5821 gcc_cv_target_dl_iterate_phdr=yes
5823 gcc_cv_target_dl_iterate_phdr=no
5827 gcc_cv_target_dl_iterate_phdr=yes
5830 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
5831 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
5832 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
5833 [Define if your target C library provides the `dl_iterate_phdr' function.])
5835 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
5837 # We no longer support different GC mechanisms. Emit an error if
5838 # the user configures with --with-gc.
5840 [AS_HELP_STRING([--with-gc={page,zone}],
5841 [this option is not supported anymore. It used to choose
5842 the garbage collection mechanism to use with the compiler])],
5843 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
5846 # Libraries to use on the host. This will normally be set by the top
5847 # level Makefile. Here we simply capture the value for our Makefile.
5848 if test -z "${HOST_LIBS+set}"; then
5853 # Use the system's zlib library.
5856 dnl Very limited version of automake's enable-maintainer-mode
5858 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
5859 dnl maintainer-mode is disabled by default
5860 AC_ARG_ENABLE(maintainer-mode,
5861 [AS_HELP_STRING([--enable-maintainer-mode],
5862 [enable make rules and dependencies not useful
5863 (and sometimes confusing) to the casual installer])],
5864 maintainer_mode=$enableval,
5867 AC_MSG_RESULT($maintainer_mode)
5869 if test "$maintainer_mode" = "yes"; then
5876 dnl Whether to prevent multiple front-ends from linking at the same time
5878 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
5879 AC_ARG_ENABLE(link-mutex,
5880 [AS_HELP_STRING([--enable-link-mutex],
5881 [avoid linking multiple front-ends at once to avoid thrashing
5882 on the build machine])],
5883 do_link_mutex=$enableval,
5885 AC_MSG_RESULT($do_link_mutex)
5887 if test "$do_link_mutex" = "yes"; then
5892 AC_SUBST(DO_LINK_MUTEX)
5898 # Make empty files to contain the specs and options for each language.
5899 # Then add #include lines to for a compiler that has specs and/or options.
5905 # These (without "all_") are set in each config-lang.in.
5906 # `language' must be a single word so is spelled singularly.
5909 all_outputs='Makefile'
5910 # List of language makefile fragments.
5912 # Additional files for gengtype
5913 all_gtfiles="$target_gtfiles"
5915 # These are the languages that are set in --enable-languages,
5916 # and are available in the GCC tree.
5917 all_selected_languages=
5919 # Add the language fragments.
5920 # Languages are added via two mechanisms. Some information must be
5921 # recorded in makefile variables, these are defined in config-lang.in.
5922 # We accumulate them and plug them into the main Makefile.
5923 # The other mechanism is a set of hooks for each of the main targets
5924 # like `clean', `install', etc.
5926 language_hooks="Make-hooks"
5928 for lang in ${srcdir}/*/config-lang.in
5931 test "$lang" = "${srcdir}/*/config-lang.in" && continue
5933 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
5934 if test "x$lang_alias" = x
5936 echo "$lang doesn't set \$language." 1>&2
5939 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
5940 subdirs="$subdirs $subdir"
5942 # $gcc_subdir is where the gcc integration files are to be found
5943 # for a language, both for internal compiler purposes (compiler
5944 # sources implementing front-end to GCC tree converters), and for
5945 # build infrastructure purposes (Make-lang.in, etc.)
5947 # This will be <subdir> (relative to $srcdir) if a line like
5948 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
5949 # is found in <langdir>/config-lang.in, and will remain <langdir>
5952 # Except for the language alias (fetched above), the regular
5953 # "config-lang.in" contents are always retrieved from $gcc_subdir,
5954 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
5955 # only this and the language alias.
5957 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
5958 if [ "$gcc_subdir" = "" ]; then
5959 gcc_subdir="$subdir"
5962 case ",$enable_languages," in
5964 all_selected_languages="$all_selected_languages $lang_alias"
5965 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
5966 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
5978 . ${srcdir}/$gcc_subdir/config-lang.in
5979 if test "x$language" = x
5981 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
5986 case ",$enable_languages," in
5989 for i in $subdir_requires; do
5990 test -f "${srcdir}/$i/config-lang.in" && continue
5998 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
5999 if test -f $srcdir/$gcc_subdir/lang.opt; then
6000 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
6001 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
6003 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
6004 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
6006 all_languages="$all_languages $language"
6007 all_compilers="$all_compilers $compilers"
6008 all_outputs="$all_outputs $outputs"
6009 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
6010 case ",$enable_languages," in
6012 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
6014 AC_SUBST(enable_lto)
6021 for language in $all_selected_languages
6023 check_languages="$check_languages check-$language"
6026 # We link each language in with a set of hooks, reached indirectly via
6027 # lang.${target}. Only do so for selected languages.
6031 target_list="all.cross start.encap rest.encap tags \
6032 install-common install-man install-info install-pdf install-html dvi \
6033 pdf html uninstall info man srcextra srcman srcinfo \
6034 mostlyclean clean distclean maintainer-clean install-plugin"
6036 for t in $target_list
6039 for lang in $all_selected_languages
6043 echo "lang.$t: $x" >> Make-hooks
6047 # Option include files
6050 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
6051 option_includes="option-includes.mk"
6052 AC_SUBST_FILE(option_includes)
6060 echo "dir ." > .gdbinit
6061 echo "dir ${srcdir}" >> .gdbinit
6062 if test x$gdb_needs_out_file_path = xyes
6064 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
6066 if test "x$subdirs" != x; then
6069 echo "dir ${srcdir}/$s" >> .gdbinit
6072 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
6073 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
6075 # Put a breakpoint on __asan_report_error to help with debugging buffer
6078 *-fsanitize=address*)
6079 echo "source ${srcdir}/gdbasan.in" >> .gdbinit
6083 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
6084 AC_SUBST(gcc_tooldir)
6087 # Find a directory in which to install a shared libgcc.
6089 AC_ARG_ENABLE(version-specific-runtime-libs,
6090 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
6091 [specify that runtime libraries should be
6092 installed in a compiler-specific directory])])
6094 # Substitute configuration variables
6097 AC_SUBST(all_compilers)
6098 AC_SUBST(all_gtfiles)
6099 AC_SUBST(all_lang_makefrags)
6100 AC_SUBST(all_languages)
6101 AC_SUBST(all_selected_languages)
6102 AC_SUBST(build_exeext)
6103 AC_SUBST(build_install_headers_dir)
6104 AC_SUBST(build_xm_file_list)
6105 AC_SUBST(build_xm_include_list)
6106 AC_SUBST(build_xm_defines)
6107 AC_SUBST(build_file_translate)
6108 AC_SUBST(check_languages)
6109 AC_SUBST(cpp_install_dir)
6110 AC_SUBST(xmake_file)
6111 AC_SUBST(tmake_file)
6112 AC_SUBST(TM_ENDIAN_CONFIG)
6113 AC_SUBST(TM_MULTILIB_CONFIG)
6114 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
6115 AC_SUBST(extra_gcc_objs)
6116 AC_SUBST(user_headers_inc_next_pre)
6117 AC_SUBST(user_headers_inc_next_post)
6118 AC_SUBST(extra_headers_list)
6119 AC_SUBST(extra_objs)
6120 AC_SUBST(extra_programs)
6121 AC_SUBST(float_h_file)
6122 AC_SUBST(gcc_config_arguments)
6123 AC_SUBST(gcc_gxx_include_dir)
6124 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
6125 AC_SUBST(host_exeext)
6126 AC_SUBST(host_xm_file_list)
6127 AC_SUBST(host_xm_include_list)
6128 AC_SUBST(host_xm_defines)
6129 AC_SUBST(out_host_hook_obj)
6131 AC_SUBST(lang_opt_files)
6132 AC_SUBST(lang_specs_files)
6133 AC_SUBST(lang_tree_files)
6134 AC_SUBST(local_prefix)
6136 AC_SUBST(objc_boehm_gc)
6138 AC_SUBST(out_object_file)
6139 AC_SUBST(common_out_file)
6140 AC_SUBST(common_out_object_file)
6141 AC_SUBST(tm_file_list)
6142 AC_SUBST(tm_include_list)
6143 AC_SUBST(tm_defines)
6144 AC_SUBST(tm_p_file_list)
6145 AC_SUBST(tm_p_include_list)
6146 AC_SUBST(xm_file_list)
6147 AC_SUBST(xm_include_list)
6148 AC_SUBST(xm_defines)
6149 AC_SUBST(use_gcc_stdint)
6150 AC_SUBST(c_target_objs)
6151 AC_SUBST(cxx_target_objs)
6152 AC_SUBST(fortran_target_objs)
6153 AC_SUBST(target_cpu_default)
6155 AC_SUBST_FILE(language_hooks)
6158 if test x${build} = x${host} ; then
6159 if test x${host} = x${target} ; then
6160 echo "Links are now set up to build a native compiler for ${target}." 1>&2
6162 echo "Links are now set up to build a cross-compiler" 1>&2
6163 echo " from ${host} to ${target}." 1>&2
6166 if test x${host} = x${target} ; then
6167 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
6168 echo " for ${target}." 1>&2
6170 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
6171 echo " from ${host} to ${target}." 1>&2
6175 AC_ARG_VAR(GMPLIBS,[How to link GMP])
6176 AC_ARG_VAR(GMPINC,[How to find GMP include files])
6178 AC_ARG_VAR(ISLLIBS,[How to link isl])
6179 AC_ARG_VAR(ISLINC,[How to find isl include files])
6180 if test "x${ISLLIBS}" != "x" ; then
6181 AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.])
6185 AC_SUBST(pluginlibs)
6186 AC_SUBST(enable_plugin)
6187 if test x"$enable_plugin" = x"yes"; then
6188 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
6192 # Enable --enable-host-shared
6193 AC_ARG_ENABLE(host-shared,
6194 [AS_HELP_STRING([--enable-host-shared],
6195 [build host code as shared libraries])],
6196 [PICFLAG=-fPIC], [PICFLAG=])
6197 AC_SUBST(enable_host_shared)
6201 AC_ARG_ENABLE(libquadmath-support,
6202 [AS_HELP_STRING([--disable-libquadmath-support],
6203 [disable libquadmath support for Fortran])],
6204 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
6205 ENABLE_LIBQUADMATH_SUPPORT=yes)
6206 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
6207 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
6208 [Define to 1 to enable libquadmath support])
6212 # Specify what hash style to use by default.
6213 AC_ARG_WITH([linker-hash-style],
6214 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
6215 [specify the linker hash style])],
6216 [case x"$withval" in
6218 LINKER_HASH_STYLE=sysv
6221 LINKER_HASH_STYLE=gnu
6224 LINKER_HASH_STYLE=both
6227 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
6230 [LINKER_HASH_STYLE=''])
6231 if test x"${LINKER_HASH_STYLE}" != x; then
6232 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
6233 [The linker hash style])
6236 # Specify what should be the default of -fdiagnostics-color option.
6237 AC_ARG_WITH([diagnostics-color],
6238 [AC_HELP_STRING([--with-diagnostics-color={never,auto,auto-if-env,always}],
6239 [specify the default of -fdiagnostics-color option
6240 auto-if-env stands for -fdiagnostics-color=auto if
6241 GCC_COLOR environment variable is present and
6242 -fdiagnostics-color=never otherwise])],
6243 [case x"$withval" in
6245 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_NO
6248 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO
6251 DIAGNOSTICS_COLOR_DEFAULT=-1
6254 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_YES
6257 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-color])
6260 [DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO])
6261 AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT,
6262 [The default for -fdiagnostics-color option])
6264 # Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit
6265 # of jit/jit-playback.c.
6266 cat > gcc-driver-name.h <<EOF
6267 #define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_BASEVER}${exeext}"
6270 # Check whether --enable-default-pie was given.
6271 AC_ARG_ENABLE(default-pie,
6272 [AS_HELP_STRING([--enable-default-pie],
6273 [enable Position Independent Executable as default])],
6274 enable_default_pie=$enableval,
6275 enable_default_pie=no)
6276 if test x$enable_default_pie = xyes ; then
6277 AC_DEFINE(ENABLE_DEFAULT_PIE, 1,
6278 [Define if your target supports default PIE and it is enabled.])
6280 AC_SUBST([enable_default_pie])
6282 # Check if -fno-PIE works.
6283 AC_CACHE_CHECK([for -fno-PIE option],
6285 [saved_CXXFLAGS="$CXXFLAGS"
6286 CXXFLAGS="$CXXFLAGS -fno-PIE"
6287 AC_COMPILE_IFELSE([int main(void) {return 0;}],
6288 [gcc_cv_c_no_fpie=yes],
6289 [gcc_cv_c_no_fpie=no])
6290 CXXFLAGS="$saved_CXXFLAGS"])
6291 if test "$gcc_cv_c_no_fpie" = "yes"; then
6292 NO_PIE_CFLAGS="-fno-PIE"
6294 AC_SUBST([NO_PIE_CFLAGS])
6296 # Check if -no-pie works.
6297 AC_CACHE_CHECK([for -no-pie option],
6299 [saved_LDFLAGS="$LDFLAGS"
6300 LDFLAGS="$LDFLAGS -no-pie"
6301 AC_LINK_IFELSE([int main(void) {return 0;}],
6302 [gcc_cv_no_pie=yes],
6304 LDFLAGS="$saved_LDFLAGS"])
6305 if test "$gcc_cv_no_pie" = "yes"; then
6306 NO_PIE_FLAG="-no-pie"
6308 AC_SUBST([NO_PIE_FLAG])
6310 # Check linker supports '-z bndplt'
6311 ld_bndplt_support=no
6312 AC_MSG_CHECKING(linker -z bndplt option)
6313 if test x"$ld_is_gold" = xno; then
6314 if test $in_tree_ld = yes ; then
6315 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6316 ld_bndplt_support=yes
6318 elif test x$gcc_cv_ld != x; then
6319 # Check if linker supports -a bndplt option
6320 if $gcc_cv_ld --help 2>/dev/null | grep -- '-z bndplt' > /dev/null; then
6321 ld_bndplt_support=yes
6325 if test x"$ld_bndplt_support" = xyes; then
6326 AC_DEFINE(HAVE_LD_BNDPLT_SUPPORT, 1,
6327 [Define if your linker supports -z bndplt])
6329 AC_MSG_RESULT($ld_bndplt_support)
6331 # Check linker supports '--push-state'/'--pop-state'
6332 ld_pushpopstate_support=no
6333 AC_MSG_CHECKING(linker --push-state/--pop-state options)
6334 if test x"$ld_is_gold" = xno; then
6335 if test $in_tree_ld = yes ; then
6336 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6337 ld_pushpopstate_support=yes
6339 elif test x$gcc_cv_ld != x; then
6340 # Check if linker supports --push-state/--pop-state options
6341 if $gcc_cv_ld --help 2>/dev/null | grep -- '--push-state' > /dev/null; then
6342 ld_pushpopstate_support=yes
6346 if test x"$ld_pushpopstate_support" = xyes; then
6347 AC_DEFINE(HAVE_LD_PUSHPOPSTATE_SUPPORT, 1,
6348 [Define if your linker supports --push-state/--pop-state])
6350 AC_MSG_RESULT($ld_pushpopstate_support)
6352 # Configure the subdirectories
6353 # AC_CONFIG_SUBDIRS($subdirs)
6355 # Create the Makefile
6356 # and configure language subdirectories
6357 AC_CONFIG_FILES($all_outputs)
6359 AC_CONFIG_COMMANDS([default],
6361 case ${CONFIG_HEADERS} in
6362 *auto-host.h:config.in*)
6365 # Make sure all the subdirs exist.
6366 for d in $subdirs doc build common c-family
6368 test -d $d || mkdir $d
6371 [subdirs='$subdirs'])