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 || exit 1
1447 # Collect host-machine-specific information.
1448 . ${srcdir}/config.host || exit 1
1452 # Collect target-machine-specific information.
1453 . ${srcdir}/config.gcc || exit 1
1455 extra_objs="${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 *$LIBICONV*)
1809 AC_ARG_ENABLE(secureplt,
1810 [AS_HELP_STRING([--enable-secureplt],
1811 [enable -msecure-plt by default for PowerPC])],
1814 AC_ARG_ENABLE(mingw-wildcard,
1815 [AS_HELP_STRING([--enable-mingw-wildcard],
1816 [Set whether to expand wildcard on command-line.
1817 Default to platform configuration])],
1818 [],[enable_mingw_wildcard=platform])
1819 AS_IF([test x"$enable_mingw_wildcard" != xplatform ],
1820 [AC_DEFINE_UNQUOTED(MINGW_DOWILDCARD,
1821 $(test x"$enable_mingw_wildcard" = xno; echo $?),
1822 [Value to set mingw's _dowildcard to.])])
1824 AC_ARG_ENABLE(leading-mingw64-underscores,
1825 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1826 [enable leading underscores on 64 bit mingw targets]),
1828 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1829 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1830 [Define if we should use leading underscore on 64 bit mingw targets])])
1833 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1836 AC_ARG_ENABLE(frame-pointer,
1837 [AS_HELP_STRING([--enable-frame-pointer],
1838 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1841 linux* | darwin[[8912]]*)
1842 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1844 enable_frame_pointer=no
1847 enable_frame_pointer=yes
1852 # Windows32 Registry support for specifying GCC installation paths.
1853 AC_ARG_ENABLE(win32-registry,
1854 [AS_HELP_STRING([--disable-win32-registry],
1855 [disable lookup of installation paths in the
1856 Registry on Windows hosts])
1857 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1858 AS_HELP_STRING([--enable-win32-registry=KEY],
1859 [use KEY instead of GCC version as the last portion
1860 of the registry key])],,)
1863 win32 | pe | cygwin* | mingw32*)
1864 if test "x$enable_win32_registry" != xno; then
1865 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1868 if test "x$enable_win32_registry" != xno; then
1869 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1870 [Define to 1 if installation paths should be looked up in the Windows
1871 Registry. Ignored on non-Windows hosts.])
1873 if test "x$enable_win32_registry" != xyes \
1874 && test "x$enable_win32_registry" != x; then
1875 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1876 [Define to be the last component of the Windows registry key under which
1877 to look for installation paths. The full key used will be
1878 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1879 The default is the GCC version number.])
1885 # Get an absolute path to the GCC top-level source directory
1886 holddir=`${PWDCMD-pwd}`
1888 topdir=`${PWDCMD-pwd}`
1891 # Conditionalize the makefile for this host machine.
1893 for f in ${host_xmake_file}
1895 if test -f ${srcdir}/config/$f
1897 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1901 # Conditionalize the makefile for this target machine.
1903 for f in ${tmake_file}
1905 if test -f ${srcdir}/config/$f
1907 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1910 tmake_file="${tmake_file_}"
1912 out_object_file=`basename $out_file .c`.o
1913 common_out_object_file=`basename $common_out_file .c`.o
1915 tm_file_list="options.h"
1916 tm_include_list="options.h insn-constants.h"
1917 for f in $tm_file; do
1920 f=`echo $f | sed 's/^..//'`
1921 tm_file_list="${tm_file_list} $f"
1922 tm_include_list="${tm_include_list} $f"
1925 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1926 tm_include_list="${tm_include_list} $f"
1929 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1930 tm_include_list="${tm_include_list} config/$f"
1937 for f in $tm_p_file; do
1940 tm_p_file_list="${tm_p_file_list} $f"
1941 tm_p_include_list="${tm_p_include_list} $f"
1944 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1945 tm_p_include_list="${tm_p_include_list} config/$f"
1951 for f in $xm_file; do
1954 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1955 xm_include_list="${xm_include_list} $f"
1958 xm_file_list="${xm_file_list} $f"
1959 xm_include_list="${xm_include_list} $f"
1962 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1963 xm_include_list="${xm_include_list} config/$f"
1969 host_xm_include_list=
1970 for f in $host_xm_file; do
1973 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1974 host_xm_include_list="${host_xm_include_list} $f"
1977 host_xm_file_list="${host_xm_file_list} $f"
1978 host_xm_include_list="${host_xm_include_list} $f"
1981 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1982 host_xm_include_list="${host_xm_include_list} config/$f"
1988 for f in $build_xm_file; do
1991 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1992 build_xm_include_list="${build_xm_include_list} $f"
1994 auto-build.h | auto-host.h )
1995 build_xm_file_list="${build_xm_file_list} $f"
1996 build_xm_include_list="${build_xm_include_list} $f"
1999 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
2000 build_xm_include_list="${build_xm_include_list} config/$f"
2005 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
2006 # cross-compiler which does not use the native headers and libraries.
2007 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
2008 CROSS= AC_SUBST(CROSS)
2009 ALL=all.internal AC_SUBST(ALL)
2010 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
2011 BUILD_SYSTEM_HEADER_DIR=$SYSTEM_HEADER_DIR AC_SUBST(BUILD_SYSTEM_HEADER_DIR)
2013 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x ||
2014 test x$build != x$host || test "x$with_build_sysroot" != x; then
2015 if test "x$with_build_sysroot" != x; then
2016 BUILD_SYSTEM_HEADER_DIR=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
2018 BUILD_SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2021 if test x$host != x$target
2023 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
2025 SYSTEM_HEADER_DIR=$BUILD_SYSTEM_HEADER_DIR
2026 elif test "x$TARGET_SYSTEM_ROOT" != x; then
2027 SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2030 if test "x$with_build_sysroot" != "x"; then
2031 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
2032 elif test "x$with_sysroot" = x; then
2033 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
2034 elif test "x$with_sysroot" = xyes; then
2035 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
2037 target_header_dir="${with_sysroot}${native_system_header_dir}"
2040 target_header_dir=${native_system_header_dir}
2043 # If this is a cross-compiler that does not
2044 # have its own set of headers then define
2047 # If this is using newlib, without having the headers available now,
2048 # then define inhibit_libc in LIBGCC2_CFLAGS.
2049 # This prevents libgcc2 from containing any code which requires libc
2051 : ${inhibit_libc=false}
2052 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
2053 test x$with_newlib = xyes ; } &&
2054 { test "x$with_headers" = xno || test ! -f "$target_header_dir/stdio.h"; } ; then
2057 AC_SUBST(inhibit_libc)
2059 # When building gcc with a cross-compiler, we need to adjust things so
2060 # that the generator programs are still built with the native compiler.
2061 # Also, we cannot run fixincludes.
2063 # These are the normal (build=host) settings:
2064 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
2065 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
2066 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
2067 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
2068 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
2069 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
2071 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS)' AC_SUBST(BUILD_NO_PIE_CFLAGS)
2072 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG)' AC_SUBST(BUILD_NO_PIE_FLAG)
2074 # And these apply if build != host, or we are generating coverage data
2075 if test x$build != x$host || test "x$coverage_flags" != x
2077 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
2078 BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CXXFLAGS_FOR_BUILD)'
2079 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
2081 NO_PIE_CFLAGS_FOR_BUILD=${NO_PIE_CFLAGS_FOR_BUILD-${NO_PIE_CFLAGS}}
2082 NO_PIE_FLAG_FOR_BUILD=${NO_PIE_FLAG_FOR_BUILD-${NO_PIE_FLAG}}
2083 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS_FOR_BUILD)'
2084 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG_FOR_BUILD)'
2086 AC_SUBST(NO_PIE_CFLAGS_FOR_BUILD)
2087 AC_SUBST(NO_PIE_FLAG_FOR_BUILD)
2089 # Expand extra_headers to include complete path.
2090 # This substitutes for lots of t-* files.
2092 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
2093 for file in ${extra_headers} ; do
2094 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
2097 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
2098 if test x"$use_gcc_tgmath" = xyes
2099 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
2102 # Define collect2 in Makefile.
2103 case $host_can_use_collect2 in
2105 *) collect2='collect2$(exeext)' ;;
2107 AC_SUBST([collect2])
2109 # Add a definition of USE_COLLECT2 if system wants one.
2110 case $use_collect2 in
2111 no) use_collect2= ;;
2114 host_xm_defines="${host_xm_defines} USE_COLLECT2"
2115 xm_defines="${xm_defines} USE_COLLECT2"
2116 case $host_can_use_collect2 in
2118 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
2124 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
2125 [Define to the name of the LTO plugin DSO that must be
2126 passed to the linker's -plugin=LIB option.])
2128 # ---------------------------
2129 # Assembler & linker features
2130 # ---------------------------
2132 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
2133 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
2134 # However when ld-new is first executed from the build tree, libtool will
2135 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
2136 # to the build tree. While doing this we need to use the previous-stage
2137 # linker, or we have an infinite loop. The presence of a shell script as
2138 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
2139 # the gcc/collect-ld script. So we need to know how libtool works, or
2140 # exec-tool will fail.
2142 m4_defun([_LT_CONFIG_COMMANDS], [])
2145 AC_SUBST(enable_fast_install)
2147 # Identify the assembler which will work hand-in-glove with the newly
2148 # built GCC, so that we can examine its features. This is the assembler
2149 # which will be driven by the driver program.
2151 # If build != host, and we aren't building gas in-tree, we identify a
2152 # build->target assembler and hope that it will have the same features
2153 # as the host->target assembler we'll be using.
2154 gcc_cv_gas_major_version=
2155 gcc_cv_gas_minor_version=
2156 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
2158 m4_pattern_allow([AS_FOR_TARGET])dnl
2159 AS_VAR_SET_IF(gcc_cv_as,, [
2160 if test -x "$DEFAULT_ASSEMBLER"; then
2161 gcc_cv_as="$DEFAULT_ASSEMBLER"
2162 elif test -f $gcc_cv_as_gas_srcdir/configure.ac \
2163 && test -f ../gas/Makefile \
2164 && test x$build = x$host; then
2165 gcc_cv_as=../gas/as-new$build_exeext
2166 elif test -x as$build_exeext; then
2167 # Build using assembler in the current directory.
2168 gcc_cv_as=./as$build_exeext
2169 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
2170 gcc_cv_as="$AS_FOR_TARGET"
2172 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
2175 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
2176 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
2177 case "$ORIGINAL_AS_FOR_TARGET" in
2178 ./as | ./as$build_exeext) ;;
2179 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2182 AC_MSG_CHECKING(what assembler to use)
2183 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
2184 # Single tree build which includes gas. We want to prefer it
2185 # over whatever linker top-level may have detected, since
2186 # we'll use what we're building after installation anyway.
2187 AC_MSG_RESULT(newly built gas)
2189 _gcc_COMPUTE_GAS_VERSION
2190 in_tree_gas_is_elf=no
2191 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
2192 || (grep 'obj_format = multi' ../gas/Makefile \
2193 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
2195 in_tree_gas_is_elf=yes
2198 AC_MSG_RESULT($gcc_cv_as)
2204 [[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]],
2205 [case "${enableval}" in
2211 install_gold_as_default=no
2213 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
2214 [case "${enableval}" in
2216 install_gold_as_default=yes
2219 if test x${default_ld} != x; then
2220 install_gold_as_default=yes
2226 AC_MSG_ERROR([invalid --enable-gold argument])
2230 # Identify the linker which will work hand-in-glove with the newly
2231 # built GCC, so that we can examine its features. This is the linker
2232 # which will be driven by the driver program.
2234 # If build != host, and we aren't building gas in-tree, we identify a
2235 # build->target linker and hope that it will have the same features
2236 # as the host->target linker we'll be using.
2237 gcc_cv_gld_major_version=
2238 gcc_cv_gld_minor_version=
2239 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2240 gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold
2241 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2243 AS_VAR_SET_IF(gcc_cv_ld,, [
2244 if test -x "$DEFAULT_LINKER"; then
2245 gcc_cv_ld="$DEFAULT_LINKER"
2246 elif test $install_gold_as_default = yes \
2247 && test -f $gcc_cv_ld_gold_srcdir/configure.ac \
2248 && test -f ../gold/Makefile \
2249 && test x$build = x$host; then
2250 gcc_cv_ld=../gold/ld-new$build_exeext
2251 elif test -f $gcc_cv_ld_gld_srcdir/configure.ac \
2252 && test -f ../ld/Makefile \
2253 && test x$build = x$host; then
2254 gcc_cv_ld=../ld/ld-new$build_exeext
2255 elif test -x collect-ld$build_exeext; then
2256 # Build using linker in the current directory.
2257 gcc_cv_ld=./collect-ld$build_exeext
2258 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2259 gcc_cv_ld="$LD_FOR_TARGET"
2261 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2264 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2265 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2266 # if the PLUGIN_LD is set ld-new, just have it as ld
2267 # as that is the installed named.
2268 if test x$PLUGIN_LD_SUFFIX = xld-new \
2269 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2272 AC_ARG_WITH(plugin-ld,
2273 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2274 [if test x"$withval" != x; then
2275 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2276 PLUGIN_LD_SUFFIX="$withval"
2278 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2279 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2281 # Check to see if we are using gold instead of ld
2282 AC_MSG_CHECKING(whether we are using gold)
2284 if test x$gcc_cv_ld != x; then
2285 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2286 | grep "GNU gold" > /dev/null; then
2290 AC_MSG_RESULT($ld_is_gold)
2292 AC_MSG_CHECKING(gold linker with split stack support as non default)
2293 # Check to see if default ld is not gold, but gold is
2294 # available and has support for split stack. If gcc was configured
2295 # with gold then no checking is done.
2297 if test x$ld_is_gold = xno && which ${gcc_cv_ld}.gold >/dev/null 2>&1; then
2299 # For platforms other than powerpc64*, enable as appropriate.
2302 ld_gold=`which ${gcc_cv_ld}.gold`
2303 # Make sure this gold has minimal split stack support
2304 if $ld_gold --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then
2305 ld_vers=`$ld_gold --version | sed 1q`
2306 gold_vers=`echo $ld_vers | sed -n \
2307 -e 's,^[[^)]]*[[ ]]\([[0-9]][[0-9]]*\.[[0-9]][[0-9]]*[[^)]]*\)) .*$,\1,p'`
2309 # check that the gold version contains the complete split stack support
2310 # on powerpc64 big and little endian
2312 case "$gold_vers" in
2313 2.25.[[1-9]]*|2.2[[6-9]][[.0-9]]*|2.[[3-9]][[.0-9]]*|[[3-9]].[[.0-9]]*) gold_non_default=yes
2315 *) gold_non_default=no
2321 if test $gold_non_default = yes; then
2322 AC_DEFINE(HAVE_GOLD_NON_DEFAULT_SPLIT_STACK, 1,
2323 [Define if the gold linker supports split stack and is available as a non-default])
2326 AC_MSG_RESULT($gold_non_default)
2328 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2329 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2330 case "$ORIGINAL_LD_FOR_TARGET" in
2331 ./collect-ld | ./collect-ld$build_exeext) ;;
2332 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2335 AC_MSG_CHECKING(what linker to use)
2336 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2337 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2338 # Single tree build which includes ld. We want to prefer it
2339 # over whatever linker top-level may have detected, since
2340 # we'll use what we're building after installation anyway.
2341 AC_MSG_RESULT(newly built ld)
2343 in_tree_ld_is_elf=no
2344 if (grep 'EMUL = .*elf' ../ld/Makefile \
2345 || grep 'EMUL = .*linux' ../ld/Makefile \
2346 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2347 in_tree_ld_is_elf=yes
2348 elif test "$ld_is_gold" = yes; then
2349 in_tree_ld_is_elf=yes
2351 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
2354 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2355 if test x$gcc_cv_gld_version != x; then
2359 case $gcc_cv_gld_version in
2362 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2365 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2366 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2368 ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext
2369 ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext
2371 AC_MSG_RESULT($gcc_cv_ld)
2373 gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext`
2374 ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext
2375 ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext
2378 AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET)
2379 AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET)
2381 # Figure out what nm we will be using.
2382 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2383 AS_VAR_SET_IF(gcc_cv_nm,, [
2384 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2385 && test -f ../binutils/Makefile \
2386 && test x$build = x$host; then
2387 gcc_cv_nm=../binutils/nm-new$build_exeext
2388 elif test -x nm$build_exeext; then
2389 gcc_cv_nm=./nm$build_exeext
2390 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2391 gcc_cv_nm="$NM_FOR_TARGET"
2393 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2396 AC_MSG_CHECKING(what nm to use)
2397 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2398 # Single tree build which includes binutils.
2399 AC_MSG_RESULT(newly built nm)
2402 AC_MSG_RESULT($gcc_cv_nm)
2406 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2407 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2408 case "$ORIGINAL_NM_FOR_TARGET" in
2409 ./nm | ./nm$build_exeext) ;;
2410 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2414 # Figure out what objdump we will be using.
2415 AS_VAR_SET_IF(gcc_cv_objdump,, [
2416 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2417 && test -f ../binutils/Makefile \
2418 && test x$build = x$host; then
2419 # Single tree build which includes binutils.
2420 gcc_cv_objdump=../binutils/objdump$build_exeext
2421 elif test -x objdump$build_exeext; then
2422 gcc_cv_objdump=./objdump$build_exeext
2423 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2424 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2426 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2429 AC_MSG_CHECKING(what objdump to use)
2430 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2431 # Single tree build which includes binutils.
2432 AC_MSG_RESULT(newly built objdump)
2433 elif test x$gcc_cv_objdump = x; then
2434 AC_MSG_RESULT(not found)
2436 AC_MSG_RESULT($gcc_cv_objdump)
2439 # Figure out what readelf we will be using.
2440 AS_VAR_SET_IF(gcc_cv_readelf,, [
2441 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2442 && test -f ../binutils/Makefile \
2443 && test x$build = x$host; then
2444 # Single tree build which includes binutils.
2445 gcc_cv_readelf=../binutils/readelf$build_exeext
2446 elif test -x readelf$build_exeext; then
2447 gcc_cv_readelf=./readelf$build_exeext
2448 elif ( set dummy $READELF_FOR_TARGET; test -x $[2] ); then
2449 gcc_cv_readelf="$READELF_FOR_TARGET"
2451 AC_PATH_PROG(gcc_cv_readelf, $READELF_FOR_TARGET)
2454 AC_MSG_CHECKING(what readelf to use)
2455 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2456 # Single tree build which includes binutils.
2457 AC_MSG_RESULT(newly built readelf)
2458 elif test x$gcc_cv_readelf = x; then
2459 AC_MSG_RESULT(not found)
2461 AC_MSG_RESULT($gcc_cv_readelf)
2464 # Figure out what assembler alignment features are present.
2465 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2469 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2470 [Define if your assembler supports .balign and .p2align.])])
2472 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2475 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2476 [Define if your assembler supports specifying the maximum number
2477 of bytes to skip when using the GAS .p2align command.])])
2479 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2482 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2483 [Define if your assembler supports .literal16.])])
2485 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2487 [conftest_label1: .word 0
2489 conftest_label2: .word 0
2491 [if test x$gcc_cv_nm != x; then
2492 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2493 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2494 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2496 else gcc_cv_as_subsection_m1=yes
2498 rm -f conftest.nm1 conftest.nm2
2500 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2501 [Define if your assembler supports .subsection and .subsection -1 starts
2502 emitting at the beginning of your section.])])
2504 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2507 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2509 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2511 [ .weakref foobar, barfnot],,
2512 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2514 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2517 .NSUBSPA $CODE$,COMDAT],,
2518 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2520 # .hidden needs to be supported in both the assembler and the linker,
2521 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2522 # This is irritatingly difficult to feature test for; we have to check the
2523 # date string after the version number. If we've got an in-tree
2524 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2526 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2529 conftest_s=' .globl foobar,hidden'
2532 conftest_s=' .hidden foobar
2536 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2537 [elf,2,13,0],, [$conftest_s])
2540 # Darwin as has some visibility support, though with a different syntax.
2541 gcc_cv_as_hidden=yes
2545 # gnu_indirect_function type is an extension proposed at
2546 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2547 # selection of function implementation
2548 AC_ARG_ENABLE(gnu-indirect-function,
2549 [AS_HELP_STRING([--enable-gnu-indirect-function],
2550 [enable the use of the @gnu_indirect_function to glibc systems])],
2551 [case $enable_gnu_indirect_function in
2553 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2554 Valid choices are 'yes' and 'no'.]) ;;
2556 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2558 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
2559 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
2560 [Define if your system supports gnu indirect functions.])
2564 if test $in_tree_ld != yes ; then
2565 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2566 if echo "$ld_ver" | grep GNU > /dev/null; then
2567 if test x"$ld_is_gold" = xyes; then
2568 # GNU gold --version looks like this:
2570 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2572 # We extract the binutils version which is more familiar and specific
2573 # than the gold version.
2574 ld_vers=`echo $ld_ver | sed -n \
2575 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2577 # GNU ld --version looks like this:
2579 # GNU ld (GNU Binutils) 2.21.51.20110225
2580 ld_vers=`echo $ld_ver | sed -n \
2581 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2583 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2584 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2585 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2586 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2590 # See acinclude.m4 (gcc_SUN_LD_VERSION) for the version number
2593 # Don't reuse gcc_gv_sun_ld_vers_* in case a linker other than
2594 # /usr/ccs/bin/ld has been configured.
2595 ld_ver=`$gcc_cv_ld -V 2>&1`
2596 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2597 ld_vers=`echo $ld_ver | sed -n \
2598 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2599 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2600 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2608 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2609 [[if test $in_tree_ld = yes ; then
2611 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2612 && test $in_tree_ld_is_elf = yes; then
2613 gcc_cv_ld_hidden=yes
2616 gcc_cv_ld_hidden=yes
2617 if test x"$ld_is_gold" = xyes; then
2619 elif echo "$ld_ver" | grep GNU > /dev/null; then
2621 mmix-knuth-mmixware)
2622 # The linker emits by default mmo, not ELF, so "no" is appropriate.
2626 if test 0"$ld_date" -lt 20020404; then
2627 if test -n "$ld_date"; then
2628 # If there was date string, but was earlier than 2002-04-04, fail
2630 elif test -z "$ld_vers"; then
2631 # If there was no date string nor ld version number, something is wrong
2634 test -z "$ld_vers_patch" && ld_vers_patch=0
2635 if test "$ld_vers_major" -lt 2; then
2637 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2638 gcc_cv_ld_hidden="no"
2639 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2647 gcc_cv_ld_hidden=yes
2650 # Darwin ld has some visibility support.
2651 gcc_cv_ld_hidden=yes
2653 hppa64*-*-hpux* | ia64*-*-hpux*)
2654 gcc_cv_ld_hidden=yes
2656 *-*-solaris2.1[0-9]*)
2657 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2658 # .symbolic was only added in Solaris 9 12/02.
2659 gcc_cv_ld_hidden=yes
2667 libgcc_visibility=no
2668 AC_SUBST(libgcc_visibility)
2669 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2670 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2671 libgcc_visibility=yes
2672 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2673 [Define if your assembler and linker support .hidden.])
2676 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2677 gcc_cv_ld_ro_rw_mix=unknown
2678 if test $in_tree_ld = yes ; then
2679 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2680 && test $in_tree_ld_is_elf = yes; then
2681 gcc_cv_ld_ro_rw_mix=read-write
2683 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2684 echo '.section myfoosect, "a"' > conftest1.s
2685 echo '.section myfoosect, "aw"' > conftest2.s
2686 echo '.byte 1' >> conftest2.s
2687 echo '.section myfoosect, "a"' > conftest3.s
2688 echo '.byte 0' >> conftest3.s
2689 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2690 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2691 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2692 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2693 conftest2.o conftest3.o > /dev/null 2>&1; then
2694 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2695 | sed -e '/myfoosect/!d' -e N`
2696 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2697 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2698 gcc_cv_ld_ro_rw_mix=read-only
2700 gcc_cv_ld_ro_rw_mix=read-write
2705 rm -f conftest.* conftest[123].*
2708 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2709 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2710 [Define if your linker links a mix of read-only
2711 and read-write sections into a read-write section.])
2713 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2715 gcc_AC_INITFINI_ARRAY
2717 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2718 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2726 [[# GAS versions before 2.11 do not support uleb128,
2727 # despite appearing to.
2728 # ??? There exists an elf-specific test that will crash
2729 # the assembler. Perhaps it's better to figure out whether
2730 # arbitrary sections are supported and try the test.
2731 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2732 if echo "$as_ver" | grep GNU > /dev/null; then
2733 as_vers=`echo $as_ver | sed -n \
2734 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2735 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2736 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2737 if test $as_major -eq 2 && test $as_minor -lt 11
2739 else gcc_cv_as_leb128=yes
2742 [AC_DEFINE(HAVE_AS_LEB128, 1,
2743 [Define if your assembler supports .sleb128 and .uleb128.])],
2744 [AC_DEFINE(HAVE_AS_LEB128, 0,
2745 [Define if your assembler supports .sleb128 and .uleb128.])])
2747 # Check if we have assembler support for unwind directives.
2748 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2755 .cfi_escape 1, 2, 3, 4, 5
2759 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2760 # read-only and read-write sections, we need to make sure that the
2761 # assembler used emits read-write .eh_frame sections.
2762 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2763 if test "x$gcc_cv_objdump" != x; then
2764 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2765 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2766 gcc_cv_as_cfi_directive=no
2769 i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*)
2770 # On Solaris/x86, make sure that GCC and assembler agree on using
2771 # read-only .eh_frame sections for 64-bit.
2772 if test x$gas = xyes; then
2773 as_ix86_64_opt="--64"
2775 as_ix86_64_opt="-xarch=amd64"
2777 if $gcc_cv_as $as_ix86_64_opt -o conftest.o conftest.s > /dev/null 2>&1 && \
2778 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2779 sed -e /.eh_frame/!d -e N | \
2780 grep READONLY > /dev/null; then
2781 gcc_cv_as_cfi_directive=yes
2783 gcc_cv_as_cfi_directive=no
2787 gcc_cv_as_cfi_directive=yes
2792 # no objdump, err on the side of caution
2793 gcc_cv_as_cfi_directive=no
2796 gcc_cv_as_cfi_directive=yes
2800 gcc_cv_as_cfi_directive=yes
2803 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2804 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2808 .cfi_adjust_cfa_offset 64
2810 .cfi_adjust_cfa_offset 128
2813 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2814 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2815 gcc_cv_as_cfi_advance_working=yes
2819 # no objdump, err on the side of caution
2820 gcc_cv_as_cfi_advance_working=no
2822 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2823 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2824 [`if test $gcc_cv_as_cfi_directive = yes \
2825 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2826 [Define 0/1 if your assembler supports CFI directives.])
2828 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2829 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2830 gcc_cv_as_cfi_personality_directive, ,,
2833 .cfi_personality 0, symbol
2835 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2836 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2837 then echo 1; else echo 0; fi`],
2838 [Define 0/1 if your assembler supports .cfi_personality.])
2840 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2841 gcc_cv_as_cfi_sections_directive, ,,
2843 .cfi_sections .debug_frame, .eh_frame
2847 win32 | pe | cygwin* | mingw32*)
2848 # Need to check that we generated the correct relocation for the
2849 # .debug_frame section. This was fixed for binutils 2.21.
2850 gcc_cv_as_cfi_sections_directive=no
2851 if test "x$gcc_cv_objdump" != x; then
2852 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2853 grep secrel > /dev/null; then
2854 gcc_cv_as_cfi_sections_directive=yes
2859 gcc_cv_as_cfi_sections_directive=yes
2862 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2863 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2864 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2865 then echo 1; else echo 0; fi`],
2866 [Define 0/1 if your assembler supports .cfi_sections.])
2868 # GAS versions up to and including 2.11.0 may mis-optimize
2870 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2878 .section .eh_frame,"aw",@progbits
2880 .4byte .LECIE1-.LSCIE1
2894 .4byte .LEFDE1-.LASFDE1
2896 .4byte .LASFDE1-__FRAME_BEGIN__
2904 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2905 cat > conftest.lit <<EOF
2906 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2907 0010 01000000 12000000 18000000 00000000 ................
2908 0020 08000000 04080000 0044 .........D @&t@
2910 cat > conftest.big <<EOF
2911 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2912 0010 00000001 00000012 00000018 00000000 ................
2913 0020 00000008 04000000 0844 .........D @&t@
2915 # If the assembler didn't choke, and we can objdump,
2916 # and we got the correct data, then succeed.
2917 # The text in the here-document typically retains its unix-style line
2918 # endings, while the output of objdump will use host line endings.
2919 # Therefore, use diff -b for the comparisons.
2920 if test x$gcc_cv_objdump != x \
2921 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2922 | tail -3 > conftest.got \
2923 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2924 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2926 gcc_cv_as_eh_frame=yes
2927 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2928 gcc_cv_as_eh_frame=buggy
2930 # Uh oh, what do we do now?
2931 gcc_cv_as_eh_frame=no
2934 if test $gcc_cv_as_eh_frame = buggy; then
2935 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2936 [Define if your assembler mis-optimizes .eh_frame data.])
2939 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2940 [elf,2,12,0], [--fatal-warnings],
2941 [.section .rodata.str, "aMS", @progbits, 1])
2942 if test $gcc_cv_as_shf_merge = no; then
2943 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2944 [elf,2,12,0], [--fatal-warnings],
2945 [.section .rodata.str, "aMS", %progbits, 1])
2947 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2948 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2949 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2951 gcc_GAS_CHECK_FEATURE([stabs directive], gcc_cv_as_stabs_directive, ,,
2952 [.stabs "gcc2_compiled.",60,0,0,0],,
2953 [AC_DEFINE(HAVE_AS_STABS_DIRECTIVE, 1,
2954 [Define if your assembler supports .stabs.])])
2956 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2957 gcc_cv_as_comdat_group,
2958 [elf,2,16,0], [--fatal-warnings],
2959 [.section .text,"axG",@progbits,.foo,comdat])
2960 if test $gcc_cv_as_comdat_group = yes; then
2961 gcc_cv_as_comdat_group_percent=no
2962 gcc_cv_as_comdat_group_group=no
2964 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2965 gcc_cv_as_comdat_group_percent,
2966 [elf,2,16,0], [--fatal-warnings],
2967 [.section .text,"axG",%progbits,.foo,comdat])
2968 if test $gcc_cv_as_comdat_group_percent = yes; then
2969 gcc_cv_as_comdat_group_group=no
2972 # Sun as uses a completely different syntax.
2977 .group foo,".text%foo",#comdat
2978 .section ".text%foo", #alloc,#execinstr,#progbits
2983 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2985 .group foo,.text%foo,#comdat
2986 .section .text%foo, "ax", @progbits
2992 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
2993 gcc_cv_as_comdat_group_group,
2997 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
2998 gcc_cv_as_comdat_group_group=no
3002 if test x"$ld_is_gold" = xyes; then
3004 elif test $in_tree_ld = yes ; then
3006 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3007 && test $in_tree_ld_is_elf = yes; then
3010 elif echo "$ld_ver" | grep GNU > /dev/null; then
3012 if test 0"$ld_date" -lt 20050308; then
3013 if test -n "$ld_date"; then
3014 # If there was date string, but was earlier than 2005-03-08, fail
3016 elif test "$ld_vers_major" -lt 2; then
3018 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
3025 *-*-solaris2.1[1-9]*)
3027 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
3028 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
3031 # If using Sun as for COMDAT group as emitted by GCC, one needs at
3032 # least ld version 1.2267.
3033 if test "$ld_vers_major" -gt 1; then
3035 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
3037 elif test "$ld_vers_minor" -ge 2267; then
3042 # Assume linkers other than GNU ld don't support COMDAT group.
3048 # Allow overriding the automatic COMDAT group tests above.
3049 AC_ARG_ENABLE(comdat,
3050 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
3051 [comdat_group="$enable_comdat"])
3052 if test $comdat_group = no; then
3053 gcc_cv_as_comdat_group=no
3054 gcc_cv_as_comdat_group_percent=no
3055 gcc_cv_as_comdat_group_group=no
3057 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
3058 [`if test $gcc_cv_as_comdat_group = yes \
3059 || test $gcc_cv_as_comdat_group_percent = yes \
3060 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
3061 [Define 0/1 if your assembler and linker support COMDAT groups.])
3063 gcc_GAS_CHECK_FEATURE([line table discriminator support],
3064 gcc_cv_as_discriminator,
3068 .loc 1 1 0 discriminator 1],,
3069 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
3070 [Define if your assembler supports the .loc discriminator sub-directive.])])
3072 # Thread-local storage - the check is heavily parameterized.
3081 .section ".tdata","awT",@progbits
3084 ldq $27,__tls_get_addr($29) !literal!1
3085 lda $16,foo($29) !tlsgd!1
3086 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
3087 ldq $27,__tls_get_addr($29) !literal!2
3088 lda $16,foo($29) !tlsldm!2
3089 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
3090 ldq $1,foo($29) !gotdtprel
3091 ldah $2,foo($29) !dtprelhi
3092 lda $3,foo($2) !dtprello
3093 lda $4,foo($29) !dtprel
3094 ldq $1,foo($29) !gottprel
3095 ldah $2,foo($29) !tprelhi
3096 lda $3,foo($2) !tprello
3097 lda $4,foo($29) !tprel'
3100 tls_as_opt=--fatal-warnings
3104 add_s r0,r0, @foo@tpoff'
3108 cris-*-*|crisv32-*-*)
3110 .section ".tdata","awT",@progbits
3117 tls_as_opt=--fatal-warnings
3121 .section ".tdata","awT",@progbits
3133 .section ".tdata","awT",@progbits
3137 addil LT%foo-$tls_gdidx$,gp
3138 ldo RT%foo-$tls_gdidx$(%r1),%arg0
3141 addil LT%foo-$tls_ldidx$,gp
3143 ldo RT%foo-$tls_ldidx$(%r1),%arg0
3144 addil LR%foo-$tls_dtpoff$,%ret0
3145 ldo RR%foo-$tls_dtpoff$(%r1),%t1
3147 addil LT%foo-$tls_ieoff$,gp
3148 ldw RT%foo-$tls_ieoff$(%r1),%t2
3151 addil LR%foo-$tls_leoff$,%t1
3152 ldo RR%foo-$tls_leoff$(%r1),%t2'
3155 tls_as_opt=--fatal-warnings
3159 .section ".tdata","awT",%progbits
3170 i[34567]86-*-* | x86_64-*-*)
3172 i[34567]86-*-solaris2.* | x86_64-*-solaris2.1[0-9]*)
3179 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3181 .section .tdata,"awt",@progbits'
3186 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
3187 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
3191 .section ".tdata","awT",@progbits'
3195 tls_as_opt="--fatal-warnings"
3199 conftest_s="$conftest_s
3203 leal foo@tlsgd(,%ebx,1), %eax
3204 leal foo@tlsldm(%ebx), %eax
3205 leal foo@dtpoff(%eax), %edx
3206 movl foo@gottpoff(%ebx), %eax
3207 subl foo@gottpoff(%ebx), %eax
3208 addl foo@gotntpoff(%ebx), %eax
3209 movl foo@indntpoff, %eax
3210 movl \$foo@tpoff, %eax
3211 subl \$foo@tpoff, %eax
3212 leal foo@ntpoff(%ecx), %eax"
3215 if test x$on_solaris = xyes; then
3217 yes) tls_as_opt="$tls_as_opt --64" ;;
3218 no) tls_as_opt="$tls_as_opt -xarch=amd64" ;;
3221 conftest_s="$conftest_s
3225 leaq foo@tlsgd(%rip), %rdi
3226 leaq foo@tlsld(%rip), %rdi
3227 leaq foo@dtpoff(%rax), %rdx
3228 movq foo@gottpoff(%rip), %rax
3229 movq \$foo@tpoff, %rax"
3235 .section ".tdata","awT",@progbits
3238 addl r16 = @ltoff(@dtpmod(foo#)), gp
3239 addl r17 = @ltoff(@dtprel(foo#)), gp
3240 addl r18 = @ltoff(@tprel(foo#)), gp
3241 addl r19 = @dtprel(foo#), gp
3242 adds r21 = @dtprel(foo#), r13
3243 movl r23 = @dtprel(foo#)
3244 addl r20 = @tprel(foo#), gp
3245 adds r22 = @tprel(foo#), r13
3246 movl r24 = @tprel(foo#)'
3249 tls_as_opt=--fatal-warnings
3253 .section .tdata,"awT",@progbits
3257 addik r5,r20,x@TLSGD
3258 addik r5,r20,x@TLSLDM'
3261 tls_as_opt='--fatal-warnings'
3265 .section .tdata,"awT",@progbits
3269 addiu $4, $28, %tlsgd(x)
3270 addiu $4, $28, %tlsldm(x)
3271 lui $4, %dtprel_hi(x)
3272 addiu $4, $4, %dtprel_lo(x)
3273 lw $4, %gottprel(x)($28)
3274 lui $4, %tprel_hi(x)
3275 addiu $4, $4, %tprel_lo(x)'
3278 tls_as_opt='-32 --fatal-warnings'
3282 .section .tdata,"awT",@progbits
3287 move.l x@TLSGD(%a5),%a0
3288 move.l x@TLSLDM(%a5),%a0
3289 move.l x@TLSLDO(%a5),%a0
3290 move.l x@TLSIE(%a5),%a0
3291 move.l x@TLSLE(%a5),%a0'
3294 tls_as_opt='--fatal-warnings'
3298 .section ".tdata","awT",@progbits'
3301 tls_as_opt="--fatal-warnings"
3305 .section ".tdata","awT",%progbits
3309 add x0, x0, #:tlsgd_lo12:x
3314 tls_as_opt='--fatal-warnings'
3318 .extern __get_tpointer
3336 .section ".tdata","awT",@progbits
3344 addi 3,2,ld0@got@tlsgd
3350 addi 3,2,x1@got@tlsld
3356 addis 9,3,x2@dtprel@ha
3357 addi 9,9,x2@dtprel@l
3360 ld 9,x3@got@dtprel(2)
3366 tls_as_opt="-a64 --fatal-warnings"
3370 .section ".tdata","awT",@progbits
3378 addi 3,31,ld0@got@tlsgd
3380 addi 3,31,x1@got@tlsld
3383 addis 9,3,x2@dtprel@ha
3384 addi 9,9,x2@dtprel@l
3385 lwz 9,x3@got@tprel(31)
3388 addis 9,2,x2@tprel@ha
3389 addi 9,9,x2@tprel@l'
3392 tls_as_opt="-a32 --fatal-warnings"
3396 .section .tdata,"awT",@progbits
3400 call __tls_get_addr'
3403 tls_as_opt='--fatal-warnings'
3407 .section ".tdata","awT",@progbits
3416 l %r1,foo@GOTNTPOFF(%r12)
3417 l %r1,0(%r1):tls_load:foo
3418 bas %r14,0(%r1,%r13):tls_gdcall:foo
3419 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3422 tls_as_opt="-m31 --fatal-warnings"
3426 .section ".tdata","awT",@progbits
3434 lg %r1,foo@GOTNTPOFF(%r12)
3435 larl %r1,foo@INDNTPOFF
3436 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3437 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3440 tls_as_opt="-m64 -Aesame --fatal-warnings"
3442 sh-*-* | sh[123456789lbe]*-*-*)
3444 .section ".tdata","awT",@progbits
3454 tls_as_opt=--fatal-warnings
3458 sparc*-sun-solaris2.*)
3465 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3467 .section ".tdata",#alloc,#write,#tls'
3472 .section ".tdata","awT",@progbits'
3475 tls_as_opt="-32 --fatal-warnings"
3477 conftest_s="$conftest_s
3480 sethi %tgd_hi22(foo), %o0
3481 add %o0, %tgd_lo10(foo), %o1
3482 add %l7, %o1, %o0, %tgd_add(foo)
3483 call __tls_get_addr, %tgd_call(foo)
3484 sethi %tldm_hi22(foo), %l1
3485 add %l1, %tldm_lo10(foo), %l2
3486 add %l7, %l2, %o0, %tldm_add(foo)
3487 call __tls_get_addr, %tldm_call(foo)
3488 sethi %tldo_hix22(foo), %l3
3489 xor %l3, %tldo_lox10(foo), %l4
3490 add %o0, %l4, %l5, %tldo_add(foo)
3491 sethi %tie_hi22(foo), %o3
3492 add %o3, %tie_lo10(foo), %o3
3493 ld [%l7 + %o3], %o2, %tie_ld(foo)
3494 add %g7, %o2, %o4, %tie_add(foo)
3495 sethi %tle_hix22(foo), %l1
3496 xor %l1, %tle_lox10(foo), %o5
3497 ld [%g7 + %o5], %o1"
3501 .section ".tdata","awT",@progbits
3504 addli r0, zero, tls_gd(foo)
3505 auli r0, zero, tls_gd_ha16(foo)
3506 addli r0, r0, tls_gd_lo16(foo)
3508 addli r0, zero, tls_ie(foo)
3509 auli r0, r0, tls_ie_ha16(foo)
3510 addli r0, r0, tls_ie_lo16(foo)'
3513 tls_as_opt="--fatal-warnings"
3517 .section ".tdata","awT",@progbits
3520 shl16insli r0, zero, hw0_last_tls_gd(foo)
3521 shl16insli r0, zero, hw1_last_tls_gd(foo)
3522 shl16insli r0, r0, hw0_tls_gd(foo)
3524 shl16insli r0, zero, hw1_last_tls_ie(foo)
3525 shl16insli r0, r0, hw0_tls_ie(foo)'
3528 tls_as_opt="--fatal-warnings"
3532 .section ".tdata","awT",@progbits
3535 movi a8, foo@TLSFUNC
3536 movi a10, foo@TLSARG
3537 callx8.tls a8, foo@TLSCALL'
3544 if test "x$enable_tls" = xno ; then
3545 : # TLS explicitly disabled.
3546 elif test "x$enable_tls" = xyes ; then
3547 set_have_as_tls=yes # TLS explicitly enabled.
3548 elif test -z "$tls_first_major"; then
3549 : # If we don't have a check, assume no support.
3551 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3552 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3553 [set_have_as_tls=yes])
3555 if test $set_have_as_tls = yes ; then
3556 AC_DEFINE(HAVE_AS_TLS, 1,
3557 [Define if your assembler and linker support thread-local storage.])
3560 # Target-specific assembler checks.
3562 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3563 gcc_cv_ld_static_dynamic=no
3564 gcc_cv_ld_static_option='-Bstatic'
3565 gcc_cv_ld_dynamic_option='-Bdynamic'
3566 if test $in_tree_ld = yes ; then
3567 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3568 gcc_cv_ld_static_dynamic=yes
3570 elif test x$gcc_cv_ld != x; then
3571 # Check if linker supports -Bstatic/-Bdynamic option
3572 if $gcc_cv_ld --help 2>&1 | grep -- -Bstatic > /dev/null \
3573 && $gcc_cv_ld --help 2>&1 | grep -- -Bdynamic > /dev/null; then
3574 gcc_cv_ld_static_dynamic=yes
3577 # AIX ld uses -b flags
3578 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
3579 gcc_cv_ld_static_dynamic=yes
3580 gcc_cv_ld_static_option="-bstatic"
3581 gcc_cv_ld_dynamic_option="-bdynamic"
3583 # HP-UX ld uses -a flags to select between shared and archive.
3585 if test x"$gnu_ld" = xno; then
3586 gcc_cv_ld_static_dynamic=yes
3587 gcc_cv_ld_static_option="-aarchive_shared"
3588 gcc_cv_ld_dynamic_option="-adefault"
3591 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3593 gcc_cv_ld_static_dynamic=yes
3598 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3599 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3600 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3601 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3602 [Define to the linker option to disable use of shared objects.])
3603 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3604 [Define to the linker option to enable use of shared objects.])
3606 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3608 if test x"$demangler_in_ld" = xyes; then
3609 AC_MSG_CHECKING(linker --demangle support)
3610 gcc_cv_ld_demangle=no
3611 if test $in_tree_ld = yes; then
3612 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3613 gcc_cv_ld_demangle=yes
3615 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3616 # Check if the GNU linker supports --demangle option
3617 if $gcc_cv_ld --help 2>&1 | grep no-demangle > /dev/null; then
3618 gcc_cv_ld_demangle=yes
3621 if test x"$gcc_cv_ld_demangle" = xyes; then
3622 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3623 [Define if your linker supports --demangle option.])
3625 AC_MSG_RESULT($gcc_cv_ld_demangle)
3628 AC_MSG_CHECKING(linker plugin support)
3630 if test -f liblto_plugin.la; then
3631 save_ld_ver="$ld_ver"
3632 save_ld_vers_major="$ld_vers_major"
3633 save_ld_vers_minor="$ld_vers_minor"
3634 save_ld_is_gold="$ld_is_gold"
3638 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3640 # FIXME: ld_is_gold?
3641 ld_vers_major="$gcc_cv_gld_major_version"
3642 ld_vers_minor="$gcc_cv_gld_minor_version"
3644 # Determine plugin linker version.
3645 # FIXME: Partial duplicate from above, generalize.
3647 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3648 if echo "$ld_ver" | grep GNU > /dev/null; then
3649 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3651 ld_vers=`echo $ld_ver | sed -n \
3652 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3654 ld_vers=`echo $ld_ver | sed -n \
3655 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3657 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3658 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3663 # Determine plugin support.
3664 if echo "$ld_ver" | grep GNU > /dev/null; then
3665 # Require GNU ld or gold 2.21+ for plugin support by default.
3666 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3668 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3669 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3674 ld_ver="$save_ld_ver"
3675 ld_vers_major="$save_ld_vers_major"
3676 ld_vers_minor="$save_ld_vers_minor"
3677 ld_is_gold="$save_ld_is_gold"
3679 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3680 [Define to the level of your linker's plugin support.])
3681 AC_MSG_RESULT($gcc_cv_lto_plugin)
3683 # Target OS-specific assembler checks.
3685 case "$target_os" in
3687 gcc_GAS_CHECK_FEATURE([-mmacosx-version-min option],
3688 gcc_cv_as_mmacosx_version_min,,
3689 [-mmacosx-version-min=10.1], [.text],,
3690 [AC_DEFINE(HAVE_AS_MMACOSX_VERSION_MIN_OPTION, 1,
3691 [Define if your Mac OS X assembler supports the -mmacos-version-min option.])])
3695 # Target CPU-specific assembler checks.
3699 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,,
3700 [-mabi=lp64], [.text],,,)
3701 if test x$gcc_cv_as_aarch64_mabi = xyes; then
3702 AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
3703 [Define if your assembler supports the -mabi option.])
3705 if test x$with_abi = xilp32; then
3706 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3707 Upgrade the Assembler.])
3709 if test x"$with_multilib_list" = xdefault; then
3710 TM_MULTILIB_CONFIG=lp64
3712 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
3713 for aarch64_multilib in ${aarch64_multilibs}; do
3714 case ${aarch64_multilib} in
3716 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3717 Upgrade the Assembler.])
3725 # Check if we have binutils support for relocations types needed by -fpic
3726 gcc_GAS_CHECK_FEATURE([-fpic relocs], gcc_cv_as_aarch64_picreloc,,,
3729 ldr x0, [[x2, #:gotpage_lo15:globalsym]]
3730 ],,[AC_DEFINE(HAVE_AS_SMALL_PIC_RELOCS, 1,
3731 [Define if your assembler supports relocs needed by -fpic.])])
3732 # Enable default workaround for AArch64 Cortex-A53 erratum 835769.
3733 AC_ARG_ENABLE(fix-cortex-a53-835769,
3735 AS_HELP_STRING([--enable-fix-cortex-a53-835769],
3736 [enable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3737 AS_HELP_STRING([--disable-fix-cortex-a53-835769],
3738 [disable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3743 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1"
3748 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\
3749 Valid choices are 'yes' and 'no'.])
3755 # Enable default workaround for AArch64 Cortex-A53 erratum 843419.
3756 AC_ARG_ENABLE(fix-cortex-a53-843419,
3758 AS_HELP_STRING([--enable-fix-cortex-a53-843419],
3759 [enable workaround for AArch64 Cortex-A53 erratum 843419 by default])
3760 AS_HELP_STRING([--disable-fix-cortex-a53-843419],
3761 [disable workaround for AArch64 Cortex-A53 erratum 843419 by default])
3766 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1"
3771 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\
3772 Valid choices are 'yes' and 'no'.])
3780 # All TARGET_ABI_OSF targets.
3781 alpha*-*-linux* | alpha*-*-*bsd*)
3782 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3783 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3786 extbl $3, $2, $3 !lituse_bytoff!1
3787 ldq $2, a($29) !literal!1
3788 ldq $4, b($29) !literal!2
3789 ldq_u $3, 0($2) !lituse_base!1
3790 ldq $27, f($29) !literal!5
3791 jsr $26, ($27), f !lituse_jsr!5
3792 ldah $29, 0($26) !gpdisp!3
3793 lda $0, c($29) !gprel
3794 ldah $1, d($29) !gprelhigh
3795 lda $1, d($1) !gprellow
3796 lda $29, 0($29) !gpdisp!3],,
3797 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3798 [Define if your assembler supports explicit relocations.])])
3799 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3800 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3803 ldq $27, a($29) !literal!1
3804 jsr $26, ($27), a !lituse_jsrdirect!1],,
3805 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3806 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3810 gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax,,
3811 [--mlink-relax], [.text],,
3812 [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1,
3813 [Define if your avr assembler supports --mlink-relax option.])])
3815 gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,,
3817 [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1,
3818 [Define if your avr assembler supports -mrmw option.])])
3820 gcc_GAS_CHECK_FEATURE([__gcc_isr pseudo instruction],
3821 gcc_cv_as_avr_mgccisr,,
3827 [AC_DEFINE(HAVE_AS_AVR_MGCCISR_OPTION, 1,
3828 [Define if your avr assembler supports -mgcc-isr option.])])
3830 # Check how default linker description file implements .rodata for
3831 # avrxmega3 (PR21472). avr-gcc assumes .rodata is *not* loaded to
3832 # RAM so avr-gcc skips __do_copy_data for .rodata objects.
3833 AC_MSG_CHECKING(binutils for avrxmega3 .rodata support)
3834 cat > conftest.s <<EOF
3835 .section .rodata,"a",@progbits
3837 ;; avr-nm should print "... R xxvaryy", not "... D xxvaryy".
3842 AC_TRY_COMMAND([$gcc_cv_as -mmcu=avrxmega3 conftest.s -o conftest.o])
3843 AC_TRY_COMMAND([$gcc_cv_ld -mavrxmega3 conftest.o -o conftest.elf])
3844 AC_TRY_COMMAND([$gcc_cv_nm conftest.elf > conftest.nm])
3845 if test -s conftest.nm
3847 if grep ' R xxvaryy' conftest.nm > /dev/null; then
3849 AC_DEFINE(HAVE_LD_AVR_AVRXMEGA3_RODATA_IN_FLASH, 1,
3850 [Define if your default avr linker script for avrxmega3 leaves .rodata in flash.])
3852 AC_MSG_RESULT(no: avrxmega3 .rodata located in RAM)
3853 echo "$as_me: nm output was" >&AS_MESSAGE_LOG_FD
3854 cat conftest.nm >&AS_MESSAGE_LOG_FD
3855 avr_ld_ver="`$gcc_cv_ld -v | sed -e 's:^.* ::'`"
3856 AC_MSG_WARN([[support for avrxmega3 .rodata in flash needs Binutils 2.29 or higher (have $avr_ld_ver)]])
3859 AC_MSG_RESULT(test failed)
3860 echo "$as_me: failed program was" >&AS_MESSAGE_LOG_FD
3861 cat conftest.s >&AS_MESSAGE_LOG_FD
3862 AC_MSG_WARN([[see `config.log' for details]])
3864 rm -f conftest.s conftest.o conftest.elf conftest.nm
3868 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3869 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3870 [-no-mul-bug-abort], [.text],,
3871 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3872 [Define if your assembler supports the -no-mul-bug-abort option.])])
3876 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3877 [.register %g2, #scratch],,
3878 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3879 [Define if your assembler supports .register.])])
3881 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3883 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3884 [Define if your assembler supports -relax option.])])
3886 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3887 gcc_cv_as_sparc_gotdata_op,,
3894 sethi %gdop_hix22(foo), %g1
3895 xor %g1, %gdop_lox10(foo), %g1
3896 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3897 [if test x$gcc_cv_ld != x \
3898 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3899 if test x$gcc_cv_objdump != x; then
3900 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3901 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3902 gcc_cv_as_sparc_gotdata_op=no
3904 gcc_cv_as_sparc_gotdata_op=yes
3909 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3910 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3912 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3913 gcc_cv_as_sparc_ua_pcrel,,
3921 .uaword %r_disp32(foo)],
3922 [if test x$gcc_cv_ld != x \
3923 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3924 gcc_cv_as_sparc_ua_pcrel=yes
3927 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3928 [Define if your assembler and linker support unaligned PC relative relocs.])
3930 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3931 gcc_cv_as_sparc_ua_pcrel_hidden,,
3936 .uaword %r_disp32(foo)
3937 .byte 0x32, 0x33, 0x34
3942 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3943 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3944 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3945 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3946 if $gcc_cv_objdump -R conftest 2> /dev/null \
3947 | grep 'DISP32' > /dev/null 2>&1; then
3950 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3954 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3955 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3956 ]) # unaligned pcrel relocs
3958 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3959 gcc_cv_as_sparc_offsetable_lo10,,
3962 or %g1, %lo(ab) + 12, %g1
3963 or %g1, %lo(ab + 12), %g1],
3964 [if test x$gcc_cv_objdump != x \
3965 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3966 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3967 gcc_cv_as_sparc_offsetable_lo10=yes
3969 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3970 [Define if your assembler supports offsetable %lo().])])
3972 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
3973 gcc_cv_as_sparc_fmaf,,
3976 .register %g2, #scratch
3977 .register %g3, #scratch
3979 fmaddd %f0, %f2, %f4, %f6
3980 addxccc %g1, %g2, %g3
3981 fsrl32 %f2, %f4, %f8
3982 fnaddd %f10, %f12, %f14],,
3983 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
3984 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
3986 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
3987 gcc_cv_as_sparc_sparc4,,
3990 .register %g2, #scratch
3991 .register %g3, #scratch
3994 1: cwbneg %g2, %g3, 1f
3997 aes_kexpand0 %f4, %f6, %f8
3998 des_round %f38, %f40, %f42, %f44
3999 camellia_f %f54, %f56, %f58, %f60
4000 kasumi_fi_xor %f46, %f48, %f50, %f52],,
4001 [AC_DEFINE(HAVE_AS_SPARC4, 1,
4002 [Define if your assembler supports SPARC4 instructions.])])
4004 gcc_GAS_CHECK_FEATURE([SPARC5 and VIS 4.0 instructions],
4005 gcc_cv_as_sparc_sparc5,,
4008 .register %g2, #scratch
4009 .register %g3, #scratch
4012 fpadd8 %f0, %f2, %f4],,
4013 [AC_DEFINE(HAVE_AS_SPARC5_VIS4, 1,
4014 [Define if your assembler supports SPARC5 and VIS 4.0 instructions.])])
4016 gcc_GAS_CHECK_FEATURE([SPARC6 instructions],
4017 gcc_cv_as_sparc_sparc6,,
4020 .register %g2, #scratch
4021 .register %g3, #scratch
4024 fpsll64x %f0, %f2, %f4],,
4025 [AC_DEFINE(HAVE_AS_SPARC6, 1,
4026 [Define if your assembler supports SPARC6 instructions.])])
4028 gcc_GAS_CHECK_FEATURE([LEON instructions],
4029 gcc_cv_as_sparc_leon,,
4032 .register %g2, #scratch
4033 .register %g3, #scratch
4037 casa [[%g2]] 0xb, %g3, %g1],,
4038 [AC_DEFINE(HAVE_AS_LEON, 1,
4039 [Define if your assembler supports LEON instructions.])])
4043 i[34567]86-*-* | x86_64-*-*)
4047 # Full C++ conformance when using a shared libstdc++-v3 requires some
4048 # support from the Cygwin DLL, which in more recent versions exports
4049 # wrappers to aid in interposing and redirecting operators new, delete,
4050 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
4051 # are configuring for a version of Cygwin that exports the wrappers.
4052 if test x$host = x$target && test x$host_cpu = xi686; then
4053 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
4055 # Can't check presence of libc functions during cross-compile, so
4056 # we just have to assume we're building for an up-to-date target.
4057 gcc_ac_cygwin_dll_wrappers=yes
4059 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
4060 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
4061 [Define if you want to generate code by default that assumes that the
4062 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
4065 cygwin* | pe | mingw32*)
4066 # Recent binutils allows the three-operand form of ".comm" on PE. This
4067 # definition is used unconditionally to initialise the default state of
4068 # the target option variable that governs usage of the feature.
4069 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
4070 [2,19,52],,[.comm foo,1,32])
4071 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
4072 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
4073 [Define if your assembler supports specifying the alignment
4074 of objects allocated using the GAS .comm command.])
4075 # Used for DWARF 2 in PE
4076 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
4077 gcc_cv_as_ix86_pe_secrel32,
4083 [if test x$gcc_cv_ld != x \
4084 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
4085 gcc_cv_as_ix86_pe_secrel32=yes
4088 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
4089 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
4090 # Test if the assembler supports the extended form of the .section
4091 # directive that specifies section alignment. LTO support uses this,
4092 # but normally only after installation, so we warn but don't fail the
4093 # configure if LTO is enabled but the assembler does not support it.
4094 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
4095 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
4096 if test x$gcc_cv_as_section_has_align != xyes; then
4097 case ",$enable_languages," in
4099 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
4106 # Test if the assembler supports the section flag 'e' for specifying
4107 # an excluded section.
4108 gcc_GAS_CHECK_FEATURE([.section with e], gcc_cv_as_section_has_e,
4109 [2,22,51], [--fatal-warnings],
4112 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
4113 [`if test $gcc_cv_as_section_has_e = yes; then echo 1; else echo 0; fi`],
4114 [Define if your assembler supports specifying the section flag e.])
4116 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
4117 gcc_cv_as_ix86_filds,,,
4118 [filds (%ebp); fists (%ebp)],,
4119 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
4120 [Define if your assembler uses filds and fists mnemonics.])])
4122 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
4123 gcc_cv_as_ix86_fildq,,,
4124 [fildq (%ebp); fistpq (%ebp)],,
4125 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
4126 [Define if your assembler uses fildq and fistq mnemonics.])])
4128 gcc_GAS_CHECK_FEATURE([cmov syntax],
4129 gcc_cv_as_ix86_cmov_sun_syntax,,,
4130 [cmovl.l %edx, %eax],,
4131 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
4132 [Define if your assembler supports the Sun syntax for cmov.])])
4134 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
4135 gcc_cv_as_ix86_ffreep,,,
4137 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
4138 [Define if your assembler supports the ffreep mnemonic.])])
4140 gcc_GAS_CHECK_FEATURE([.quad directive],
4141 gcc_cv_as_ix86_quad,,,
4143 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
4144 [Define if your assembler supports the .quad directive.])])
4146 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
4147 gcc_cv_as_ix86_sahf,,,
4150 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
4151 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
4153 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
4154 gcc_cv_as_ix86_interunit_movq,,,
4158 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
4159 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
4160 [Define if your assembler supports interunit movq mnemonic.])
4162 gcc_GAS_CHECK_FEATURE([hle prefixes],
4163 gcc_cv_as_ix86_hle,,,
4164 [lock xacquire cmpxchg %esi, (%ecx)],,
4165 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
4166 [Define if your assembler supports HLE prefixes.])])
4168 gcc_GAS_CHECK_FEATURE([swap suffix],
4169 gcc_cv_as_ix86_swap,,,
4170 [movl.s %esp, %ebp],,
4171 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
4172 [Define if your assembler supports the swap suffix.])])
4174 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
4175 gcc_cv_as_ix86_diff_sect_delta,,,
4183 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
4184 [Define if your assembler supports the subtraction of symbols in different sections.])])
4186 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
4187 gcc_cv_as_ix86_rep_lock_prefix,,,
4193 lock addl %edi, (%eax,%esi)
4194 lock orl $0, (%esp)],,
4195 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
4196 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
4198 gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
4199 gcc_cv_as_ix86_ud2,,,
4201 [AC_DEFINE(HAVE_AS_IX86_UD2, 1,
4202 [Define if your assembler supports the 'ud2' mnemonic.])])
4204 # Enforce 32-bit output with gas and gld.
4205 if test x$gas = xyes; then
4206 as_ix86_gas_32_opt="--32"
4208 if echo "$ld_ver" | grep GNU > /dev/null; then
4209 if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then
4210 ld_ix86_gld_32_opt="-melf_i386_sol2"
4212 ld_ix86_gld_32_opt="-melf_i386"
4216 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
4217 gcc_cv_as_ix86_tlsgdplt,,
4218 [$as_ix86_gas_32_opt],
4219 [call tls_gd@tlsgdplt],
4220 [if test x$gcc_cv_ld != x \
4221 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4222 gcc_cv_as_ix86_tlsgdplt=yes
4225 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
4226 [Define if your assembler and linker support @tlsgdplt.])])
4229 .section .tdata,"aw'$tls_section_flag'",@progbits
4231 .section .text,"ax",@progbits
4232 call tls_ld@tlsldmplt'
4234 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
4235 gcc_cv_as_ix86_tlsldmplt,,
4236 [$as_ix86_gas_32_opt],
4238 [if test x$gcc_cv_ld != x \
4239 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4240 gcc_cv_as_ix86_tlsldmplt=yes
4243 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT,
4244 [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`],
4245 [Define to 1 if your assembler and linker support @tlsldmplt.])
4248 .section .text,"ax",@progbits
4250 .type _start, @function
4252 leal value@tlsldm(%ebx), %eax
4253 call ___tls_get_addr@plt
4255 .section .tdata,"aw'$tls_section_flag'",@progbits
4256 .type value, @object
4258 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc],
4259 gcc_cv_as_ix86_tlsldm,,
4260 [$as_ix86_gas_32_opt],
4262 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4263 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then
4264 if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \
4265 || dis conftest 2>/dev/null | grep nop > /dev/null; then
4266 gcc_cv_as_ix86_tlsldm=yes
4270 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM,
4271 [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`],
4272 [Define to 1 if your assembler and linker support @tlsldm.])
4283 gcc_GAS_CHECK_FEATURE([R_386_GOT32X reloc],
4284 gcc_cv_as_ix86_got32x,,
4285 [$as_ix86_gas_32_opt],
4287 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4288 && test x$gcc_cv_readelf != x \
4289 && $gcc_cv_readelf --relocs --wide conftest.o 2>&1 \
4290 | grep R_386_GOT32X > /dev/null 2>&1 \
4291 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4292 if $gcc_cv_objdump -dw conftest 2>&1 \
4293 | grep 0xffffff > /dev/null 2>&1; then
4294 gcc_cv_as_ix86_got32x=no
4296 gcc_cv_as_ix86_got32x=yes
4300 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_GOT32X,
4301 [`if test x"$gcc_cv_as_ix86_got32x" = xyes; then echo 1; else echo 0; fi`],
4302 [Define 0/1 if your assembler and linker support @GOT.])
4304 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
4305 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],
4306 [$as_ix86_gas_32_opt],
4312 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
4313 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
4314 [Define true if the assembler supports '.long foo@GOTOFF'.])
4317 .section .text,"ax",@progbits
4319 .type _start, @function
4321 leal ld@tlsldm(%ecx), %eax
4322 call *___tls_get_addr@GOT(%ecx)
4323 leal gd@tlsgd(%ecx), %eax
4324 call *___tls_get_addr@GOT(%ecx)
4326 .section .tdata,"aw'$tls_section_flag'",@progbits
4334 gcc_GAS_CHECK_FEATURE([calling ___tls_get_addr via GOT],
4335 gcc_cv_as_ix86_tls_get_addr_via_got,,
4336 [$as_ix86_gas_32_opt],
4338 [if test x$gcc_cv_ld != x \
4339 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4340 gcc_cv_as_ix86_tls_get_addr_via_got=yes
4343 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLS_GET_ADDR_GOT,
4344 [`if test x"$gcc_cv_as_ix86_tls_get_addr_via_got" = xyes; then echo 1; else echo 0; fi`],
4345 [Define 0/1 if your assembler and linker support calling ___tls_get_addr via GOT.])
4349 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
4350 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
4352 addl r15 = @ltoffx(x#), gp
4354 ld8.mov r16 = [[r15]], x#],,
4355 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
4356 [Define if your assembler supports ltoffx and ldxmov relocations.])])
4364 gcc_GAS_CHECK_FEATURE([.machine directive support],
4365 gcc_cv_as_machine_directive,,,
4366 [ .machine ppc7400])
4367 if test x$gcc_cv_as_machine_directive != xyes; then
4368 echo "*** This target requires an assembler supporting \".machine\"" >&2
4369 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
4370 test x$build = x$target && exit 1
4376 *-*-aix*) conftest_s=' .machine "pwr5"
4379 *-*-darwin*) conftest_s=' .text
4381 *) conftest_s=' .machine power4
4386 gcc_GAS_CHECK_FEATURE([mfcr field support],
4387 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
4389 [AC_DEFINE(HAVE_AS_MFCRF, 1,
4390 [Define if your assembler supports mfcr field.])])
4393 *-*-aix*) conftest_s=' .machine "pwr5"
4396 *) conftest_s=' .machine power5
4401 gcc_GAS_CHECK_FEATURE([popcntb support],
4402 gcc_cv_as_powerpc_popcntb, [2,17,0],,
4404 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
4405 [Define if your assembler supports popcntb field.])])
4408 *-*-aix*) conftest_s=' .machine "pwr5x"
4411 *) conftest_s=' .machine power5
4416 gcc_GAS_CHECK_FEATURE([fp round support],
4417 gcc_cv_as_powerpc_fprnd, [2,17,0],,
4419 [AC_DEFINE(HAVE_AS_FPRND, 1,
4420 [Define if your assembler supports fprnd.])])
4423 *-*-aix*) conftest_s=' .machine "pwr6"
4426 *) conftest_s=' .machine power6
4431 gcc_GAS_CHECK_FEATURE([move fp gpr support],
4432 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
4434 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
4435 [Define if your assembler supports mffgpr and mftgpr.])])
4438 *-*-aix*) conftest_s=' .csect .text[[PR]]
4440 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
4444 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
4445 *) conftest_s=' .text
4447 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
4450 gcc_GAS_CHECK_FEATURE([rel16 relocs],
4451 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
4453 [AC_DEFINE(HAVE_AS_REL16, 1,
4454 [Define if your assembler supports R_PPC_REL16 relocs.])])
4457 *-*-aix*) conftest_s=' .machine "pwr6"
4460 *) conftest_s=' .machine power6
4465 gcc_GAS_CHECK_FEATURE([compare bytes support],
4466 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
4468 [AC_DEFINE(HAVE_AS_CMPB, 1,
4469 [Define if your assembler supports cmpb.])])
4472 *-*-aix*) conftest_s=' .machine "pwr6"
4475 *) conftest_s=' .machine power6
4480 gcc_GAS_CHECK_FEATURE([decimal float support],
4481 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
4483 [AC_DEFINE(HAVE_AS_DFP, 1,
4484 [Define if your assembler supports DFP instructions.])])
4487 *-*-aix*) conftest_s=' .machine "pwr7"
4490 *) conftest_s=' .machine power7
4495 gcc_GAS_CHECK_FEATURE([vector-scalar support],
4496 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
4498 [AC_DEFINE(HAVE_AS_VSX, 1,
4499 [Define if your assembler supports VSX instructions.])])
4502 *-*-aix*) conftest_s=' .machine "pwr7"
4505 *) conftest_s=' .machine power7
4510 gcc_GAS_CHECK_FEATURE([popcntd support],
4511 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
4513 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
4514 [Define if your assembler supports POPCNTD instructions.])])
4517 *-*-aix*) conftest_s=' .machine "pwr8"
4518 .csect .text[[PR]]';;
4519 *) conftest_s=' .machine power8
4523 gcc_GAS_CHECK_FEATURE([power8 support],
4524 gcc_cv_as_powerpc_power8, [2,19,2], -a32,
4526 [AC_DEFINE(HAVE_AS_POWER8, 1,
4527 [Define if your assembler supports POWER8 instructions.])])
4530 *-*-aix*) conftest_s=' .machine "pwr9"
4531 .csect .text[[PR]]';;
4532 *) conftest_s=' .machine power9
4536 gcc_GAS_CHECK_FEATURE([power9 support],
4537 gcc_cv_as_powerpc_power9, [2,19,2], -a32,
4539 [AC_DEFINE(HAVE_AS_POWER9, 1,
4540 [Define if your assembler supports POWER9 instructions.])])
4543 *-*-aix*) conftest_s=' .csect .text[[PR]]
4545 *) conftest_s=' .text
4549 gcc_GAS_CHECK_FEATURE([lwsync support],
4550 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
4552 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
4553 [Define if your assembler supports LWSYNC instructions.])])
4556 *-*-aix*) conftest_s=' .machine "476"
4559 *) conftest_s=' .machine "476"
4564 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
4565 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
4567 [AC_DEFINE(HAVE_AS_DCI, 1,
4568 [Define if your assembler supports the DCI/ICI instructions.])])
4570 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4571 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
4572 [.gnu_attribute 4,1],,
4573 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4574 [Define if your assembler supports .gnu_attribute.])])
4576 gcc_GAS_CHECK_FEATURE([tls marker support],
4577 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
4578 [ bl __tls_get_addr(x@tlsgd)],,
4579 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
4580 [Define if your assembler supports arg info for __tls_get_addr.])])
4582 gcc_GAS_CHECK_FEATURE([prologue entry point marker support],
4583 gcc_cv_as_powerpc_entry_markers, [2,26,0],-a64 --fatal-warnings,
4584 [ .reloc .,R_PPC64_ENTRY; nop],,
4585 [AC_DEFINE(HAVE_AS_ENTRY_MARKERS, 1,
4586 [Define if your assembler supports the R_PPC64_ENTRY relocation.])])
4590 gcc_GAS_CHECK_FEATURE([AIX .ref support],
4591 gcc_cv_as_aix_ref, [2,21,0],,
4592 [ .csect stuff[[rw]]
4598 [AC_DEFINE(HAVE_AS_REF, 1,
4599 [Define if your assembler supports .ref])])
4601 gcc_GAS_CHECK_FEATURE([AIX DWARF location lists section support],
4602 gcc_cv_as_aix_dwloc, [2,21,0],,
4607 [AC_DEFINE(HAVE_XCOFF_DWARF_EXTRAS, 1,
4608 [Define if your assembler supports AIX debug frame section label reference.])])
4614 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4615 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
4616 [ lw $4,%gp_rel(foo)($4)],,
4617 [if test x$target_cpu_default = x
4618 then target_cpu_default=MASK_EXPLICIT_RELOCS
4619 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
4622 gcc_GAS_CHECK_FEATURE([-mno-shared support],
4623 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
4624 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
4625 [Define if the assembler understands -mno-shared.])])
4627 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4628 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
4629 [.gnu_attribute 4,1],,
4630 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4631 [Define if your assembler supports .gnu_attribute.])])
4633 gcc_GAS_CHECK_FEATURE([.module support],
4634 gcc_cv_as_mips_dot_module,,[-32],
4637 [AC_DEFINE(HAVE_AS_DOT_MODULE, 1,
4638 [Define if your assembler supports .module.])])
4639 if test x$gcc_cv_as_mips_dot_module = xno \
4640 && test x$with_fp_32 != x; then
4642 [Requesting --with-fp-32= requires assembler support for .module.])
4645 gcc_GAS_CHECK_FEATURE([.micromips support],
4646 gcc_cv_as_micromips_support,,[--fatal-warnings],
4648 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
4649 [Define if your assembler supports the .set micromips directive])])
4651 gcc_GAS_CHECK_FEATURE([.dtprelword support],
4652 gcc_cv_as_mips_dtprelword, [2,18,0],,
4653 [.section .tdata,"awT",@progbits
4657 .dtprelword x+0x8000],,
4658 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
4659 [Define if your assembler supports .dtprelword.])])
4661 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
4662 gcc_cv_as_mips_dspr1_mult,,,
4672 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
4673 [Define if your assembler supports DSPR1 mult.])])
4675 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
4676 gcc_cv_as_ld_jalr_reloc=no
4677 if test $gcc_cv_as_mips_explicit_relocs = yes; then
4678 if test $in_tree_ld = yes ; then
4679 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
4680 && test $in_tree_ld_is_elf = yes; then
4681 gcc_cv_as_ld_jalr_reloc=yes
4683 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4684 echo ' .ent x' > conftest.s
4685 echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s
4686 echo ' lw $25,%call16(y)($28)' >> conftest.s
4687 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
4688 echo '1: jalr $25' >> conftest.s
4689 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
4690 echo '1: jalr $25' >> conftest.s
4691 echo ' .end x' >> conftest.s
4692 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4693 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4694 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4695 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4696 gcc_cv_as_ld_jalr_reloc=yes
4702 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4703 if test x$target_cpu_default = x; then
4704 target_cpu_default=MASK_RELAX_PIC_CALLS
4706 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4709 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4711 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4712 [gcc_cv_ld_mips_personality_relaxation],
4713 [gcc_cv_ld_mips_personality_relaxation=no
4714 if test $in_tree_ld = yes ; then
4715 if test "$gcc_cv_gld_major_version" -eq 2 \
4716 -a "$gcc_cv_gld_minor_version" -ge 21 \
4717 -o "$gcc_cv_gld_major_version" -gt 2; then
4718 gcc_cv_ld_mips_personality_relaxation=yes
4720 elif test x$gcc_cv_as != x \
4721 -a x$gcc_cv_ld != x \
4722 -a x$gcc_cv_readelf != x ; then
4723 cat > conftest.s <<EOF
4725 .cfi_personality 0x80,indirect_ptr
4732 .section .data,"aw",@progbits
4736 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4737 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4738 if $gcc_cv_readelf -d conftest 2>&1 \
4739 | grep TEXTREL > /dev/null 2>&1; then
4741 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4742 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4745 gcc_cv_ld_mips_personality_relaxation=yes
4749 rm -f conftest.s conftest.o conftest])
4750 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4751 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4752 [Define if your linker can relax absolute .eh_frame personality
4753 pointers into PC-relative form.])
4756 gcc_GAS_CHECK_FEATURE([-mnan= support],
4757 gcc_cv_as_mips_nan,,
4759 [AC_DEFINE(HAVE_AS_NAN, 1,
4760 [Define if the assembler understands -mnan=.])])
4761 if test x$gcc_cv_as_mips_nan = xno \
4762 && test x$with_nan != x; then
4764 [Requesting --with-nan= requires assembler support for -mnan=])
4768 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4769 gcc_cv_as_s390_gnu_attribute, [2,18,0],,
4770 [.gnu_attribute 8,1],,
4771 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4772 [Define if your assembler supports .gnu_attribute.])])
4773 gcc_GAS_CHECK_FEATURE([.machine and .machinemode support],
4774 gcc_cv_as_s390_machine_machinemode, [2,24,0],,
4779 [AC_DEFINE(HAVE_AS_MACHINE_MACHINEMODE, 1,
4780 [Define if your assembler supports .machine and .machinemode.])])
4781 gcc_GAS_CHECK_FEATURE([architecture modifiers support],
4782 gcc_cv_as_s390_architecture_modifiers, [2,26,0],,
4783 [ .machine z13+vx ],,
4784 [AC_DEFINE(HAVE_AS_ARCHITECTURE_MODIFIERS, 1,
4785 [Define if your assembler supports architecture modifiers.])])
4789 # Mips and HP-UX need the GNU assembler.
4790 # Linux on IA64 might be able to use the Intel assembler.
4793 mips*-*-* | *-*-hpux* )
4794 if test x$gas_flag = xyes \
4795 || test x"$host" != x"$build" \
4796 || test ! -x "$gcc_cv_as" \
4797 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4800 echo "*** This configuration requires the GNU assembler" >&2
4806 # ??? Not all targets support dwarf2 debug_line, even within a version
4807 # of gas. Moreover, we need to emit a valid instruction to trigger any
4808 # info to the output file. So, as supported targets are added to gas 2.11,
4809 # add some instruction here to (also) show we expect this might work.
4810 # ??? Once 2.11 is released, probably need to add first known working
4811 # version to the per-target configury.
4813 aarch64 | alpha | arc | arm | avr | bfin | cris | i386 | m32c | m68k \
4814 | microblaze | mips | nios2 | pa | riscv | rs6000 | score | sparc | spu \
4815 | tilegx | tilepro | visium | xstormy16 | xtensa)
4825 if test x"$insn" != x; then
4827 .file 1 \"conftest.s\"
4830 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4831 gcc_cv_as_dwarf2_debug_line,
4832 [elf,2,11,0],, [$conftest_s],
4833 [if test x$gcc_cv_objdump != x \
4834 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4835 | grep debug_line > /dev/null 2>&1; then
4836 gcc_cv_as_dwarf2_debug_line=yes
4839 # The .debug_line file table must be in the exact order that
4840 # we specified the files, since these indices are also used
4841 # by DW_AT_decl_file. Approximate this test by testing if
4842 # the assembler bitches if the same index is assigned twice.
4843 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4844 gcc_cv_as_dwarf2_file_buggy,,,
4848 if test $gcc_cv_as_dwarf2_debug_line = yes \
4849 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4850 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4851 [Define if your assembler supports dwarf2 .file/.loc directives,
4852 and preserves file table indices exactly as given.])
4855 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4856 gcc_cv_as_gdwarf2_flag,
4857 [elf,2,11,0], [--gdwarf2], [$insn],,
4858 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4859 [Define if your assembler supports the --gdwarf2 option.])])
4861 gcc_GAS_CHECK_FEATURE([--gstabs option],
4862 gcc_cv_as_gstabs_flag,
4863 [elf,2,11,0], [--gstabs], [$insn],,
4864 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4865 [Define if your assembler supports the --gstabs option.])])
4867 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4868 gcc_cv_as_debug_prefix_map_flag,
4869 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4870 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4871 [Define if your assembler supports the --debug-prefix-map option.])])
4874 gcc_GAS_CHECK_FEATURE([compressed debug sections],
4875 gcc_cv_as_compress_debug,,,,
4876 [# gas compiled without zlib cannot compress debug sections and warns
4877 # about it, but still exits successfully. So check for this, too.
4878 if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null
4880 gcc_cv_as_compress_debug=0
4881 # Since binutils 2.26, gas supports --compress-debug-sections=type,
4882 # defaulting to the ELF gABI format.
4883 elif $gcc_cv_as --compress-debug-sections=zlib-gnu -o conftest.o conftest.s > /dev/null 2>&1
4885 gcc_cv_as_compress_debug=2
4886 gcc_cv_as_compress_debug_option="--compress-debug-sections"
4887 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
4888 # Before binutils 2.26, gas only supported --compress-debug-options and
4889 # emitted the traditional GNU format.
4890 elif $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s > /dev/null 2>&1
4892 gcc_cv_as_compress_debug=1
4893 gcc_cv_as_compress_debug_option="--compress-debug-sections"
4894 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
4896 gcc_cv_as_compress_debug=0
4898 AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug,
4899 [Define to the level of your assembler's compressed debug section support.])
4900 AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option",
4901 [Define to the assembler option to enable compressed debug sections.])
4902 AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option",
4903 [Define to the assembler option to disable compressed debug sections.])
4905 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4908 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4909 [Define if your assembler supports .lcomm with an alignment field.])])
4911 if test x$with_sysroot = x && test x$host = x$target \
4912 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4913 && test "$prefix" != "NONE"; then
4914 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4915 [Define to PREFIX/include if cpp should also search that directory.])
4918 # Determine the version of glibc, if any, used on the target.
4919 AC_MSG_CHECKING([for target glibc version])
4920 AC_ARG_WITH([glibc-version],
4921 [AS_HELP_STRING([--with-glibc-version=M.N],
4922 [assume GCC used with glibc version M.N or later])], [
4923 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
4924 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
4925 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
4927 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
4929 glibc_version_major=0
4930 glibc_version_minor=0
4931 [if test -f $target_header_dir/features.h \
4932 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
4933 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
4934 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
4935 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
4937 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
4938 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MAJOR], [$glibc_version_major],
4939 [GNU C Library major version number used on the target, or 0.])
4940 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MINOR], [$glibc_version_minor],
4941 [GNU C Library minor version number used on the target, or 0.])
4943 AC_ARG_ENABLE(gnu-unique-object,
4944 [AS_HELP_STRING([--enable-gnu-unique-object],
4945 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4946 [case $enable_gnu_unique_object in
4948 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4949 Valid choices are 'yes' and 'no'.]) ;;
4951 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4953 [.type foo, '$target_type_format_char'gnu_unique_object],,
4954 # We need to unquote above to to use the definition from config.gcc.
4955 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4956 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
4958 if test x$enable_gnu_unique_object = xyes; then
4959 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4960 [Define if your assembler supports @gnu_unique_object.])
4963 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4964 [gcc_cv_as_line_zero],
4965 [gcc_cv_as_line_zero=no
4966 if test $in_tree_gas = yes; then
4967 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4968 elif test "x$gcc_cv_as" != x; then
4969 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4970 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4971 test "x`cat conftest.out`" = x
4973 gcc_cv_as_line_zero=yes
4975 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4976 cat conftest.s >&AS_MESSAGE_LOG_FD
4977 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4978 cat conftest.out >&AS_MESSAGE_LOG_FD
4980 rm -f conftest.o conftest.s conftest.out
4982 if test "x$gcc_cv_as_line_zero" = xyes; then
4983 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4984 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4987 AC_MSG_CHECKING(support for thin archives)
4988 thin_archive_support=no
4989 echo 'int main (void) { return 0; }' > conftest.c
4990 if ($AR --version | sed 1q | grep "GNU ar" \
4991 && $CC $CFLAGS -c conftest.c \
4992 && $AR rcT conftest.a conftest.o \
4993 && $CC $CFLAGS $LDFLAGS -o conftest conftest.a) >/dev/null 2>&1; then
4994 thin_archive_support=yes
4996 rm -f conftest.c conftest.o conftest.a conftest
4997 AC_MSG_RESULT($thin_archive_support)
4998 AC_SUBST(thin_archive_support)
5000 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
5001 gcc_cv_ld_eh_frame_hdr=no
5002 if test $in_tree_ld = yes ; then
5003 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
5004 && test $in_tree_ld_is_elf = yes; then
5005 gcc_cv_ld_eh_frame_hdr=yes
5007 elif test x$gcc_cv_ld != x; then
5008 if echo "$ld_ver" | grep GNU > /dev/null; then
5009 # Check if linker supports --eh-frame-hdr option
5010 if $gcc_cv_ld --help 2>&1 | grep eh-frame-hdr > /dev/null; then
5011 gcc_cv_ld_eh_frame_hdr=yes
5016 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
5017 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
5018 gcc_cv_ld_eh_frame_hdr=yes
5024 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
5025 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
5026 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
5027 [Define if your linker supports .eh_frame_hdr.])
5029 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
5031 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
5032 gcc_cv_ld_eh_frame_ciev3=no
5033 if test $in_tree_ld = yes ; then
5034 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5035 && test $in_tree_ld_is_elf = yes; then
5036 gcc_cv_ld_eh_frame_ciev3=yes
5038 elif test x$gcc_cv_ld != x; then
5039 if echo "$ld_ver" | grep GNU > /dev/null; then
5040 gcc_cv_ld_eh_frame_ciev3=yes
5041 if test 0"$ld_date" -lt 20040513; then
5042 if test -n "$ld_date"; then
5043 # If there was date string, but was earlier than 2004-05-13, fail
5044 gcc_cv_ld_eh_frame_ciev3=no
5045 elif test "$ld_vers_major" -lt 2; then
5046 gcc_cv_ld_eh_frame_ciev3=no
5047 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
5048 gcc_cv_ld_eh_frame_ciev3=no
5054 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
5055 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
5056 gcc_cv_ld_eh_frame_ciev3=yes
5062 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
5063 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
5064 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
5065 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
5067 AC_MSG_CHECKING(linker position independent executable support)
5069 if test $in_tree_ld = yes ; then
5071 # Full PIE support on Solaris was only introduced in gld 2.26.
5072 *-*-solaris2*) gcc_gld_pie_min_version=26 ;;
5073 *) gcc_gld_pie_min_version=15 ;;
5075 if test "$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 \
5076 && test $in_tree_ld_is_elf = yes; then
5079 elif test x$gcc_cv_ld != x; then
5080 # Check if linker supports -pie option
5081 if $gcc_cv_ld --help 2>&1 | grep -- -pie > /dev/null; then
5085 if echo "$ld_ver" | grep GNU > /dev/null \
5086 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
5093 *-*-solaris2.1[[1-9]]*)
5094 # Solaris 11.x and Solaris 12 added PIE support.
5095 if $gcc_cv_ld -z help 2>&1 | grep -- type.*pie > /dev/null; then
5102 if test x"$gcc_cv_ld_pie" = xyes; then
5103 AC_DEFINE(HAVE_LD_PIE, 1,
5104 [Define if your linker supports PIE option.])
5106 AC_MSG_RESULT($gcc_cv_ld_pie)
5108 AC_MSG_CHECKING(linker PIE support with copy reloc)
5109 gcc_cv_ld_pie_copyreloc=no
5110 if test $gcc_cv_ld_pie = yes ; then
5111 if test $in_tree_ld = yes ; then
5112 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
5113 gcc_cv_ld_pie_copyreloc=yes
5115 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5116 # Check if linker supports -pie option with copy reloc
5118 i?86-*-linux* | x86_64-*-linux*)
5119 cat > conftest1.s <<EOF
5122 .type a_glob, @object
5127 cat > conftest2.s <<EOF
5130 .type main, @function
5132 movl %eax, a_glob(%rip)
5135 .section .data.rel,"aw",@progbits
5140 if $gcc_cv_as --64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5141 && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \
5142 && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5143 && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then
5144 gcc_cv_ld_pie_copyreloc=yes
5146 rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s
5151 AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC,
5152 [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`],
5153 [Define 0/1 if your linker supports -pie option with copy reloc.])
5154 AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc)
5156 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
5157 gcc_cv_ld_eh_gc_sections=no
5158 if test $in_tree_ld = yes ; then
5159 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
5160 && test $in_tree_ld_is_elf = yes; then
5161 gcc_cv_ld_eh_gc_sections=yes
5163 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
5164 cat > conftest.s <<EOF
5167 .type _start, @function
5170 .size _start, .-_start
5171 .section .text.foo,"ax",@progbits
5172 .type foo, @function
5176 .section .gcc_except_table.foo,"a",@progbits
5179 .section .eh_frame,"a",@progbits
5182 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5183 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5184 | grep "gc-sections option ignored" > /dev/null; then
5185 gcc_cv_ld_eh_gc_sections=no
5186 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5187 | grep gcc_except_table > /dev/null; then
5188 gcc_cv_ld_eh_gc_sections=yes
5189 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
5190 if test x$gcc_cv_as_comdat_group != xyes; then
5191 gcc_cv_ld_eh_gc_sections=no
5192 cat > conftest.s <<EOF
5195 .type _start, @function
5198 .size _start, .-_start
5199 .section .gnu.linkonce.t.foo,"ax",@progbits
5200 .type foo, @function
5204 .section .gcc_except_table.foo,"a",@progbits
5207 .section .eh_frame,"a",@progbits
5210 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5211 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5212 | grep "gc-sections option ignored" > /dev/null; then
5213 gcc_cv_ld_eh_gc_sections=no
5214 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5215 | grep gcc_except_table > /dev/null; then
5216 gcc_cv_ld_eh_gc_sections=yes
5222 rm -f conftest.s conftest.o conftest
5226 # ??? This apparently exposes a binutils bug with PC-relative relocations.
5227 gcc_cv_ld_eh_gc_sections=no
5230 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
5231 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
5232 [Define if your linker supports garbage collection of
5233 sections in presence of EH frames.])
5235 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
5237 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
5238 gcc_cv_ld_eh_gc_sections_bug=no
5239 if test $in_tree_ld = yes ; then
5240 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
5241 && test $in_tree_ld_is_elf = yes; then
5242 gcc_cv_ld_eh_gc_sections_bug=yes
5244 elif test x$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
5245 gcc_cv_ld_eh_gc_sections_bug=yes
5246 cat > conftest.s <<EOF
5249 .type _start, @function
5252 .size _start, .-_start
5253 .section .text.startup.foo,"ax",@progbits
5254 .type foo, @function
5258 .section .gcc_except_table.foo,"a",@progbits
5261 .section .eh_frame,"a",@progbits
5264 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5265 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5266 | grep "gc-sections option ignored" > /dev/null; then
5268 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5269 | grep gcc_except_table > /dev/null; then
5270 gcc_cv_ld_eh_gc_sections_bug=no
5273 rm -f conftest.s conftest.o conftest
5275 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
5276 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
5277 [Define if your linker has buggy garbage collection of
5278 sections support when .text.startup.foo like sections are used.])
5280 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
5282 AC_MSG_CHECKING(linker for compressed debug sections)
5283 # gold/gld support compressed debug sections since binutils 2.19/2.21
5284 # In binutils 2.26, gld gained support for the ELF gABI format.
5285 if test $in_tree_ld = yes ; then
5286 gcc_cv_ld_compress_debug=0
5287 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 19 -o "$gcc_cv_gld_major_version" -gt 2 \
5288 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = yes; then
5289 gcc_cv_ld_compress_debug=2
5290 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5291 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 26 -o "$gcc_cv_gld_major_version" -gt 2 \
5292 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = no; then
5293 gcc_cv_ld_compress_debug=3
5294 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5295 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2 \
5296 && test $in_tree_ld_is_elf = yes; then
5297 gcc_cv_ld_compress_debug=1
5299 elif echo "$ld_ver" | grep GNU > /dev/null; then
5300 if test "$ld_vers_major" -lt 2 \
5301 || test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 21; then
5302 gcc_cv_ld_compress_debug=0
5303 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
5304 gcc_cv_ld_compress_debug=1
5306 gcc_cv_ld_compress_debug=3
5307 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5309 if test $ld_is_gold = yes; then
5310 gcc_cv_ld_compress_debug=2
5311 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5317 # Introduced in Solaris 11.2.
5318 if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then
5319 gcc_cv_ld_compress_debug=3
5320 gcc_cv_ld_compress_debug_option="-z compress-sections"
5322 gcc_cv_ld_compress_debug=0
5326 # Assume linkers other than GNU ld don't support compessed debug
5328 gcc_cv_ld_compress_debug=0
5333 AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug,
5334 [Define to the level of your linker's compressed debug section support.])
5335 AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option",
5336 [Define to the linker option to enable compressed debug sections.])
5337 AC_MSG_RESULT($gcc_cv_ld_compress_debug)
5339 if test x"$ld64_flag" = x"yes"; then
5341 # Set defaults for possibly untestable items.
5342 gcc_cv_ld64_export_dynamic=0
5344 if test "$build" = "$host"; then
5350 # On Darwin, because of FAT library support, it is often possible to execute
5351 # exes from compatible archs even when the host differs from the build system.
5352 case "$build","$host" in
5353 x86_64-*-darwin*,i?86-*-darwin* | powerpc64*-*-darwin*,powerpc*-*-darwin*)
5358 # If the configurer specified a minimum ld64 version to be supported, then use
5359 # that to determine feature support.
5360 if test x"${gcc_cv_ld64_version}" != x; then
5361 AC_MSG_CHECKING(ld64 specified version)
5362 gcc_cv_ld64_major=`echo "$gcc_cv_ld64_version" | sed -e 's/\..*//'`
5363 AC_MSG_RESULT($gcc_cv_ld64_major)
5364 if test "$gcc_cv_ld64_major" -ge 236; then
5365 gcc_cv_ld64_export_dynamic=1
5367 elif test -x "$gcc_cv_ld" -a "$darwin_try_test" -eq 1; then
5368 # If the version was not specified, try to find it.
5369 AC_MSG_CHECKING(linker version)
5370 if test x"${gcc_cv_ld64_version}" = x; then
5371 gcc_cv_ld64_version=`$gcc_cv_ld -v 2>&1 | grep ld64 | sed s/.*ld64-// | awk '{print $1}'`
5373 AC_MSG_RESULT($gcc_cv_ld64_version)
5375 AC_MSG_CHECKING(linker for -export_dynamic support)
5376 gcc_cv_ld64_export_dynamic=1
5377 if $gcc_cv_ld -export_dynamic < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then
5378 gcc_cv_ld64_export_dynamic=0
5380 AC_MSG_RESULT($gcc_cv_ld64_export_dynamic)
5383 if test x"${gcc_cv_ld64_version}" != x; then
5384 AC_DEFINE_UNQUOTED(LD64_VERSION, "${gcc_cv_ld64_version}",
5385 [Define to ld64 version.])
5388 AC_DEFINE_UNQUOTED(LD64_HAS_EXPORT_DYNAMIC, $gcc_cv_ld64_export_dynamic,
5389 [Define to 1 if ld64 supports '-export_dynamic'.])
5396 AC_CACHE_CHECK(linker --as-needed support,
5397 gcc_cv_ld_as_needed,
5398 [gcc_cv_ld_as_needed=no
5399 gcc_cv_ld_as_needed_option='--as-needed'
5400 gcc_cv_ld_no_as_needed_option='--no-as-needed'
5401 if test $in_tree_ld = yes ; then
5402 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5403 && test $in_tree_ld_is_elf = yes; then
5404 gcc_cv_ld_as_needed=yes
5406 elif test x$gcc_cv_ld != x; then
5407 # Check if linker supports --as-needed and --no-as-needed options
5408 if $gcc_cv_ld --help 2>&1 | grep as-needed > /dev/null; then
5409 gcc_cv_ld_as_needed=yes
5411 case "$target:$gnu_ld" in
5413 # Solaris 2 ld always supports -z ignore/-z record. Prefer the native
5415 gcc_cv_ld_as_needed=yes
5416 gcc_cv_ld_as_needed_option="-z ignore"
5417 gcc_cv_ld_no_as_needed_option="-z record"
5421 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
5422 # dl_iterate_phdr, i.e. since Solaris 11.
5424 *-*-solaris2.1[[1-9]]*)
5426 i?86-*-* | x86_64-*-*)
5427 if echo "$ld_ver" | grep GNU > /dev/null; then
5428 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
5429 gcc_cv_ld_as_needed=no
5435 gcc_cv_ld_as_needed=no
5439 if test x"$gcc_cv_ld_as_needed" = xyes; then
5440 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
5441 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
5442 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
5443 [Define to the linker option to ignore unused dependencies.])
5444 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
5445 [Define to the linker option to keep unused dependencies.])
5448 AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities)
5449 saved_LDFLAGS="$LDFLAGS"
5450 for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do
5451 LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map"
5452 AC_LINK_IFELSE([int main(void) {return 0;}],
5453 [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no])
5455 LDFLAGS="$saved_LDFLAGS"
5456 if test "x$gcc_cv_ld_clearcap" = xyes; then
5457 AC_DEFINE([HAVE_LD_CLEARCAP], 1,
5458 [Define if the linker supports clearing hardware capabilities via mapfile.])
5459 AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map])
5461 AC_MSG_RESULT($gcc_cv_ld_clearcap)
5467 emul_name="-melf32lppc"
5470 emul_name="-melf32ppc"
5473 AC_CACHE_CHECK(linker .gnu.attributes long double support,
5475 [gcc_cv_ld_ppc_attr=no
5476 if test x"$ld_is_gold" = xyes; then
5477 gcc_cv_ld_ppc_attr=yes
5478 elif test $in_tree_ld = yes ; then
5479 if test "$gcc_cv_gld_major_version" -eq 2 \
5480 -a "$gcc_cv_gld_minor_version" -ge 28 \
5481 -o "$gcc_cv_gld_major_version" -gt 2; then
5482 gcc_cv_ld_ppc_attr=yes
5484 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5485 # check that merging the long double .gnu_attribute doesn't warn
5486 cat > conftest1.s <<EOF
5489 cat > conftest2.s <<EOF
5492 if $gcc_cv_as -a32 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5493 && $gcc_cv_as -a32 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5494 && $gcc_cv_ld $emul_name -r -o conftest.o conftest1.o conftest2.o > /dev/null 2> conftest.err \
5495 && test ! -s conftest.err; then
5496 gcc_cv_ld_ppc_attr=yes
5498 rm -f conftest.err conftest.o conftest1.o conftest2.o conftest1.s conftest2.s
5501 if test x$gcc_cv_ld_ppc_attr = xyes; then
5502 AC_DEFINE(HAVE_LD_PPC_GNU_ATTR_LONG_DOUBLE, 1,
5503 [Define if your PowerPC linker has .gnu.attributes long double support.])
5508 case "$target:$tm_file" in
5509 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
5512 emul_name="-melf64lppc"
5515 emul_name="-melf64ppc"
5518 emul_name="-melf64ppc_fbsd"
5521 AC_CACHE_CHECK(linker support for omitting dot symbols,
5522 gcc_cv_ld_no_dot_syms,
5523 [gcc_cv_ld_no_dot_syms=no
5524 if test x"$ld_is_gold" = xyes; then
5525 gcc_cv_ld_no_dot_syms=yes
5526 elif test $in_tree_ld = yes ; then
5527 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
5528 gcc_cv_ld_no_dot_syms=yes
5530 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5531 cat > conftest1.s <<EOF
5535 cat > conftest2.s <<EOF
5536 .section ".opd","aw"
5541 .quad .LEfoo,.TOC.@tocbase,0
5547 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5548 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5549 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
5550 gcc_cv_ld_no_dot_syms=yes
5552 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
5555 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
5556 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
5557 [Define if your PowerPC64 linker only needs function descriptor syms.])
5560 AC_CACHE_CHECK(linker large toc support,
5561 gcc_cv_ld_large_toc,
5562 [gcc_cv_ld_large_toc=no
5563 if test x"$ld_is_gold" = xyes; then
5564 gcc_cv_ld_large_toc=yes
5565 elif test $in_tree_ld = yes ; then
5566 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
5567 gcc_cv_ld_large_toc=yes
5569 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5570 cat > conftest.s <<EOF
5571 .section ".tbss","awT",@nobits
5577 addis 9,13,ie0@got@tprel@ha
5578 ld 9,ie0@got@tprel@l(9)
5580 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5581 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
5582 gcc_cv_ld_large_toc=yes
5584 rm -f conftest conftest.o conftest.s
5587 if test x"$gcc_cv_ld_large_toc" = xyes; then
5588 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5589 [Define if your PowerPC64 linker supports a large TOC.])
5592 AC_CACHE_CHECK(linker toc pointer alignment,
5593 gcc_cv_ld_toc_align,
5594 [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then
5595 cat > conftest.s <<EOF
5600 .section .data.rel.ro,"aw",@progbits
5605 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5606 && $gcc_cv_ld $emul_name -z norelro -o conftest conftest.o > /dev/null 2>&1; then
5607 gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'`
5609 rm -f conftest conftest.o conftest.s
5612 if test -n "$gcc_cv_ld_toc_align" && test $gcc_cv_ld_toc_align -gt 8; then
5613 AC_DEFINE_UNQUOTED(POWERPC64_TOC_POINTER_ALIGNMENT, $gcc_cv_ld_toc_align,
5614 [Define to .TOC. alignment forced by your linker.])
5621 AC_CACHE_CHECK(linker large toc support,
5622 gcc_cv_ld_large_toc,
5623 [gcc_cv_ld_large_toc=no
5624 if test x$gcc_cv_as != x ; then
5625 cat > conftest.s <<EOF
5635 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
5636 gcc_cv_ld_large_toc=yes
5638 rm -f conftest conftest.o conftest.s
5641 if test x"$gcc_cv_ld_large_toc" = xyes; then
5642 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5643 [Define if your PowerPC64 linker supports a large TOC.])
5648 AC_CACHE_CHECK(linker --build-id support,
5650 [gcc_cv_ld_buildid=no
5651 if test $in_tree_ld = yes ; then
5652 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5653 "$gcc_cv_gld_minor_version" -ge 18 -o \
5654 "$gcc_cv_gld_major_version" -gt 2 \
5655 && test $in_tree_ld_is_elf = yes; then
5656 gcc_cv_ld_buildid=yes
5658 elif test x$gcc_cv_ld != x; then
5659 if $gcc_cv_ld --help 2>&1 | grep build-id > /dev/null; then
5660 gcc_cv_ld_buildid=yes
5663 if test x"$gcc_cv_ld_buildid" = xyes; then
5664 AC_DEFINE(HAVE_LD_BUILDID, 1,
5665 [Define if your linker supports --build-id.])
5668 AC_ARG_ENABLE(linker-build-id,
5669 [AS_HELP_STRING([--enable-linker-build-id],
5670 [compiler will always pass --build-id to linker])],
5672 enable_linker_build_id=no)
5674 if test x"$enable_linker_build_id" = xyes; then
5675 if test x"$gcc_cv_ld_buildid" = xyes; then
5676 AC_DEFINE(ENABLE_LD_BUILDID, 1,
5677 [Define if gcc should always pass --build-id to linker.])
5679 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
5683 # In binutils 2.21, GNU ld gained support for new emulations fully
5684 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
5685 AC_CACHE_CHECK(linker *_sol2 emulation support,
5686 gcc_cv_ld_sol2_emulation,
5687 [gcc_cv_ld_sol2_emulation=no
5688 if test $in_tree_ld = yes ; then
5689 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5690 "$gcc_cv_gld_minor_version" -ge 21 -o \
5691 "$gcc_cv_gld_major_version" -gt 2 \
5692 && test $in_tree_ld_is_elf = yes; then
5693 gcc_cv_ld_sol2_emulation=yes
5695 elif test x$gcc_cv_ld != x; then
5696 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
5697 grep _sol2 > /dev/null; then
5698 gcc_cv_ld_sol2_emulation=yes
5701 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
5702 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
5703 [Define if your linker supports the *_sol2 emulations.])
5706 AC_CACHE_CHECK(linker --sysroot support,
5708 [gcc_cv_ld_sysroot=no
5709 if test $in_tree_ld = yes ; then
5710 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
5711 gcc_cv_ld_sysroot=yes
5713 elif test x$gcc_cv_ld != x; then
5714 if $gcc_cv_ld --help 2>&1 | grep sysroot > /dev/null; then
5715 gcc_cv_ld_sysroot=yes
5718 if test x"$gcc_cv_ld_sysroot" = xyes; then
5719 AC_DEFINE(HAVE_LD_SYSROOT, 1,
5720 [Define if your linker supports --sysroot.])
5725 # Check for system-provided CRTs on Solaris 11.x and Solaris 12.
5726 AC_CACHE_CHECK([system-provided CRTs on Solaris],
5727 gcc_cv_solaris_crts,
5728 [gcc_cv_solaris_crts=no
5729 if test x$host != x$target; then
5730 if test "x$with_sysroot" = xyes; then
5731 target_sysroot="${test_exec_prefix}/${target_noncanonical}/sys-root"
5733 target_sysroot="${with_sysroot}"
5736 target_libdir="$target_sysroot/usr/lib"
5737 # At the time they were added, gcrt1.o became a symlink for backwards
5738 # compatibility on x86, while crt1.o was added on sparc, so check for that.
5740 i?86-*-solaris2* | x86_64-*-solaris2*)
5741 if test -h "$target_libdir/gcrt1.o"; then gcc_cv_solaris_crts=yes; fi
5744 if test -f "$target_libdir/crt1.o"; then gcc_cv_solaris_crts=yes; fi
5749 if test x$gcc_cv_solaris_crts = xyes; then
5750 AC_DEFINE(HAVE_SOLARIS_CRTS, 1,
5751 [Define if the system-provided CRTs are present on Solaris.])
5754 # Test for stack protector support in target C library.
5755 AC_CACHE_CHECK(__stack_chk_fail in target C library,
5756 gcc_cv_libc_provides_ssp,
5757 [gcc_cv_libc_provides_ssp=no
5760 # All versions of musl provide stack protector
5761 gcc_cv_libc_provides_ssp=yes;;
5762 *-*-linux* | *-*-kfreebsd*-gnu)
5763 # glibc 2.4 and later provides __stack_chk_fail and
5764 # either __stack_chk_guard, or TLS access to stack guard canary.
5765 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
5766 [if test -f $target_header_dir/features.h \
5767 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
5768 $target_header_dir/features.h > /dev/null; then
5769 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
5770 $target_header_dir/features.h > /dev/null && \
5771 test -f $target_header_dir/bits/uClibc_config.h && \
5772 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
5773 $target_header_dir/bits/uClibc_config.h > /dev/null; then
5774 gcc_cv_libc_provides_ssp=yes
5776 # all versions of Bionic support stack protector
5777 elif test -f $target_header_dir/sys/cdefs.h \
5778 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
5779 $target_header_dir/sys/cdefs.h > /dev/null; then
5780 gcc_cv_libc_provides_ssp=yes
5784 # Avoid complicated tests (see
5785 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
5786 # simply assert that glibc does provide this, which is true for all
5787 # realistically usable GNU/Hurd configurations.
5788 # All supported versions of musl provide it as well
5789 gcc_cv_libc_provides_ssp=yes;;
5790 *-*-darwin* | *-*-freebsd* | *-*-netbsd*)
5791 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
5792 [echo "no __stack_chk_fail on this target"])
5794 *) gcc_cv_libc_provides_ssp=no ;;
5797 if test x$gcc_cv_libc_provides_ssp = xyes; then
5798 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
5799 [Define if your target C library provides stack protector support])
5802 # Check whether --enable-default-ssp was given.
5803 AC_ARG_ENABLE(default-ssp,
5804 [AS_HELP_STRING([--enable-default-ssp],
5805 [enable Stack Smashing Protection as default])],[
5806 if test x$gcc_cv_libc_provides_ssp = xyes; then
5808 ia64*-*-*) enable_default_ssp=no ;;
5809 *) enable_default_ssp=$enableval ;;
5812 enable_default_ssp=no
5814 enable_default_ssp=no)
5815 if test x$enable_default_ssp = xyes ; then
5816 AC_DEFINE(ENABLE_DEFAULT_SSP, 1,
5817 [Define if your target supports default stack protector and it is enabled.])
5819 AC_SUBST([enable_default_ssp])
5821 # Test for <sys/sdt.h> on the target.
5822 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
5823 AC_MSG_CHECKING(sys/sdt.h in the target C library)
5825 if test -f $target_header_dir/sys/sdt.h; then
5827 AC_DEFINE(HAVE_SYS_SDT_H, 1,
5828 [Define if your target C library provides sys/sdt.h])
5830 AC_MSG_RESULT($have_sys_sdt_h)
5832 # Check if TFmode long double should be used by default or not.
5833 # Some glibc targets used DFmode long double, but with glibc 2.4
5834 # and later they can use TFmode.
5836 powerpc*-*-linux* | \
5840 AC_ARG_WITH(long-double-128,
5841 [AS_HELP_STRING([--with-long-double-128],
5842 [use 128-bit long double by default])],
5843 gcc_cv_target_ldbl128="$with_long_double_128",
5844 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
5845 [gcc_cv_target_ldbl128=no
5846 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
5847 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
5848 && gcc_cv_target_ldbl128=yes
5852 if test x$gcc_cv_target_ldbl128 = xyes; then
5853 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
5854 [Define if TFmode long double should be the default])
5857 # Check if the target LIBC supports exporting the AT_PLATFORM and AT_HWCAP
5858 # values in the TCB. Currently, only GLIBC 2.23 and later support this.
5859 gcc_cv_libc_provides_hwcap_in_tcb=no
5862 GCC_GLIBC_VERSION_GTE_IFELSE([2], [23], [gcc_cv_libc_provides_hwcap_in_tcb=yes], )
5865 if test x$gcc_cv_libc_provides_hwcap_in_tcb = xyes; then
5866 AC_DEFINE(TARGET_LIBC_PROVIDES_HWCAP_IN_TCB, 1,
5867 [Define if your target C Library provides the AT_HWCAP value in the TCB])
5870 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
5871 gcc_cv_target_dl_iterate_phdr=unknown
5873 # Restrict to Solaris 11+. While most of the Solaris 11 linker changes
5874 # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in
5875 # libdl there, both complicating its use and breaking compatibility
5876 # between Solaris 10 updates.
5877 *-*-solaris2.1[[1-9]]*)
5878 # <link.h> needs both a dl_iterate_phdr declaration and support for
5879 # compilation with largefile support.
5880 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
5881 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
5882 gcc_cv_target_dl_iterate_phdr=yes
5884 gcc_cv_target_dl_iterate_phdr=no
5887 *-*-dragonfly* | *-*-freebsd*)
5888 if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then
5889 gcc_cv_target_dl_iterate_phdr=yes
5891 gcc_cv_target_dl_iterate_phdr=no
5895 gcc_cv_target_dl_iterate_phdr=yes
5898 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
5899 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
5900 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
5901 [Define if your target C library provides the `dl_iterate_phdr' function.])
5903 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
5905 # We no longer support different GC mechanisms. Emit an error if
5906 # the user configures with --with-gc.
5908 [AS_HELP_STRING([--with-gc={page,zone}],
5909 [this option is not supported anymore. It used to choose
5910 the garbage collection mechanism to use with the compiler])],
5911 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
5914 # Libraries to use on the host. This will normally be set by the top
5915 # level Makefile. Here we simply capture the value for our Makefile.
5916 if test -z "${HOST_LIBS+set}"; then
5921 # Use the system's zlib library.
5924 dnl Very limited version of automake's enable-maintainer-mode
5926 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
5927 dnl maintainer-mode is disabled by default
5928 AC_ARG_ENABLE(maintainer-mode,
5929 [AS_HELP_STRING([--enable-maintainer-mode],
5930 [enable make rules and dependencies not useful
5931 (and sometimes confusing) to the casual installer])],
5932 maintainer_mode=$enableval,
5935 AC_MSG_RESULT($maintainer_mode)
5937 if test "$maintainer_mode" = "yes"; then
5944 dnl Whether to prevent multiple front-ends from linking at the same time
5946 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
5947 AC_ARG_ENABLE(link-mutex,
5948 [AS_HELP_STRING([--enable-link-mutex],
5949 [avoid linking multiple front-ends at once to avoid thrashing
5950 on the build machine])],
5951 do_link_mutex=$enableval,
5953 AC_MSG_RESULT($do_link_mutex)
5955 if test "$do_link_mutex" = "yes"; then
5960 AC_SUBST(DO_LINK_MUTEX)
5966 # Make empty files to contain the specs and options for each language.
5967 # Then add #include lines to for a compiler that has specs and/or options.
5973 # These (without "all_") are set in each config-lang.in.
5974 # `language' must be a single word so is spelled singularly.
5977 all_outputs='Makefile'
5978 # List of language makefile fragments.
5980 # Additional files for gengtype
5981 all_gtfiles="$target_gtfiles"
5983 # These are the languages that are set in --enable-languages,
5984 # and are available in the GCC tree.
5985 all_selected_languages=
5987 # Add the language fragments.
5988 # Languages are added via two mechanisms. Some information must be
5989 # recorded in makefile variables, these are defined in config-lang.in.
5990 # We accumulate them and plug them into the main Makefile.
5991 # The other mechanism is a set of hooks for each of the main targets
5992 # like `clean', `install', etc.
5994 language_hooks="Make-hooks"
5996 for lang in ${srcdir}/*/config-lang.in
5999 test "$lang" = "${srcdir}/*/config-lang.in" && continue
6001 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
6002 if test "x$lang_alias" = x
6004 echo "$lang doesn't set \$language." 1>&2
6007 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
6008 subdirs="$subdirs $subdir"
6010 # $gcc_subdir is where the gcc integration files are to be found
6011 # for a language, both for internal compiler purposes (compiler
6012 # sources implementing front-end to GCC tree converters), and for
6013 # build infrastructure purposes (Make-lang.in, etc.)
6015 # This will be <subdir> (relative to $srcdir) if a line like
6016 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
6017 # is found in <langdir>/config-lang.in, and will remain <langdir>
6020 # Except for the language alias (fetched above), the regular
6021 # "config-lang.in" contents are always retrieved from $gcc_subdir,
6022 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
6023 # only this and the language alias.
6025 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
6026 if [ "$gcc_subdir" = "" ]; then
6027 gcc_subdir="$subdir"
6030 case ",$enable_languages," in
6032 all_selected_languages="$all_selected_languages $lang_alias"
6033 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
6034 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
6046 . ${srcdir}/$gcc_subdir/config-lang.in
6047 if test "x$language" = x
6049 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
6054 case ",$enable_languages," in
6057 for i in $subdir_requires; do
6058 test -f "${srcdir}/$i/config-lang.in" && continue
6066 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
6067 if test -f $srcdir/$gcc_subdir/lang.opt; then
6068 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
6069 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
6071 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
6072 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
6074 all_languages="$all_languages $language"
6075 all_compilers="$all_compilers $compilers"
6076 all_outputs="$all_outputs $outputs"
6077 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
6078 case ",$enable_languages," in
6080 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
6082 AC_SUBST(enable_lto)
6089 for language in $all_selected_languages
6091 check_languages="$check_languages check-$language"
6094 # We link each language in with a set of hooks, reached indirectly via
6095 # lang.${target}. Only do so for selected languages.
6099 target_list="all.cross start.encap rest.encap tags \
6100 install-common install-man install-info install-pdf install-html dvi \
6101 pdf html uninstall info man srcextra srcman srcinfo \
6102 mostlyclean clean distclean maintainer-clean install-plugin"
6104 for t in $target_list
6107 for lang in $all_selected_languages
6111 echo "lang.$t: $x" >> Make-hooks
6115 # Option include files
6118 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
6119 option_includes="option-includes.mk"
6120 AC_SUBST_FILE(option_includes)
6128 echo "dir ." > .gdbinit
6129 echo "dir ${srcdir}" >> .gdbinit
6130 if test x$gdb_needs_out_file_path = xyes
6132 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
6134 if test "x$subdirs" != x; then
6137 echo "dir ${srcdir}/$s" >> .gdbinit
6140 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
6141 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
6143 # Put a breakpoint on __asan_report_error to help with debugging buffer
6146 *-fsanitize=address*)
6147 echo "source ${srcdir}/gdbasan.in" >> .gdbinit
6151 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
6152 AC_SUBST(gcc_tooldir)
6155 # Find a directory in which to install a shared libgcc.
6157 AC_ARG_ENABLE(version-specific-runtime-libs,
6158 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
6159 [specify that runtime libraries should be
6160 installed in a compiler-specific directory])])
6162 # Substitute configuration variables
6165 AC_SUBST(all_compilers)
6166 AC_SUBST(all_gtfiles)
6167 AC_SUBST(all_lang_makefrags)
6168 AC_SUBST(all_languages)
6169 AC_SUBST(all_selected_languages)
6170 AC_SUBST(build_exeext)
6171 AC_SUBST(build_install_headers_dir)
6172 AC_SUBST(build_xm_file_list)
6173 AC_SUBST(build_xm_include_list)
6174 AC_SUBST(build_xm_defines)
6175 AC_SUBST(build_file_translate)
6176 AC_SUBST(check_languages)
6177 AC_SUBST(cpp_install_dir)
6178 AC_SUBST(xmake_file)
6179 AC_SUBST(tmake_file)
6180 AC_SUBST(TM_ENDIAN_CONFIG)
6181 AC_SUBST(TM_MULTILIB_CONFIG)
6182 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
6183 AC_SUBST(extra_gcc_objs)
6184 AC_SUBST(user_headers_inc_next_pre)
6185 AC_SUBST(user_headers_inc_next_post)
6186 AC_SUBST(extra_headers_list)
6187 AC_SUBST(extra_objs)
6188 AC_SUBST(extra_programs)
6189 AC_SUBST(float_h_file)
6190 AC_SUBST(gcc_config_arguments)
6191 AC_SUBST(gcc_gxx_include_dir)
6192 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
6193 AC_SUBST(host_exeext)
6194 AC_SUBST(host_xm_file_list)
6195 AC_SUBST(host_xm_include_list)
6196 AC_SUBST(host_xm_defines)
6197 AC_SUBST(out_host_hook_obj)
6199 AC_SUBST(lang_opt_files)
6200 AC_SUBST(lang_specs_files)
6201 AC_SUBST(lang_tree_files)
6202 AC_SUBST(local_prefix)
6204 AC_SUBST(objc_boehm_gc)
6206 AC_SUBST(out_object_file)
6207 AC_SUBST(common_out_file)
6208 AC_SUBST(common_out_object_file)
6209 AC_SUBST(tm_file_list)
6210 AC_SUBST(tm_include_list)
6211 AC_SUBST(tm_defines)
6212 AC_SUBST(tm_p_file_list)
6213 AC_SUBST(tm_p_include_list)
6214 AC_SUBST(xm_file_list)
6215 AC_SUBST(xm_include_list)
6216 AC_SUBST(xm_defines)
6217 AC_SUBST(use_gcc_stdint)
6218 AC_SUBST(c_target_objs)
6219 AC_SUBST(cxx_target_objs)
6220 AC_SUBST(fortran_target_objs)
6221 AC_SUBST(target_cpu_default)
6223 AC_SUBST_FILE(language_hooks)
6226 if test x${build} = x${host} ; then
6227 if test x${host} = x${target} ; then
6228 echo "Links are now set up to build a native compiler for ${target}." 1>&2
6230 echo "Links are now set up to build a cross-compiler" 1>&2
6231 echo " from ${host} to ${target}." 1>&2
6234 if test x${host} = x${target} ; then
6235 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
6236 echo " for ${target}." 1>&2
6238 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
6239 echo " from ${host} to ${target}." 1>&2
6243 AC_ARG_VAR(GMPLIBS,[How to link GMP])
6244 AC_ARG_VAR(GMPINC,[How to find GMP include files])
6246 AC_ARG_VAR(ISLLIBS,[How to link isl])
6247 AC_ARG_VAR(ISLINC,[How to find isl include files])
6248 if test "x${ISLLIBS}" != "x" ; then
6249 AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.])
6253 AC_SUBST(pluginlibs)
6254 AC_SUBST(enable_plugin)
6255 if test x"$enable_plugin" = x"yes"; then
6256 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
6260 # Enable --enable-host-shared
6261 AC_ARG_ENABLE(host-shared,
6262 [AS_HELP_STRING([--enable-host-shared],
6263 [build host code as shared libraries])],
6264 [PICFLAG=-fPIC], [PICFLAG=])
6265 AC_SUBST(enable_host_shared)
6269 AC_ARG_ENABLE(libquadmath-support,
6270 [AS_HELP_STRING([--disable-libquadmath-support],
6271 [disable libquadmath support for Fortran])],
6272 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
6273 ENABLE_LIBQUADMATH_SUPPORT=yes)
6274 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
6275 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
6276 [Define to 1 to enable libquadmath support])
6280 # Specify what hash style to use by default.
6281 AC_ARG_WITH([linker-hash-style],
6282 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
6283 [specify the linker hash style])],
6284 [case x"$withval" in
6286 LINKER_HASH_STYLE=sysv
6289 LINKER_HASH_STYLE=gnu
6292 LINKER_HASH_STYLE=both
6295 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
6298 [LINKER_HASH_STYLE=''])
6299 if test x"${LINKER_HASH_STYLE}" != x; then
6300 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
6301 [The linker hash style])
6304 # Specify what should be the default of -fdiagnostics-color option.
6305 AC_ARG_WITH([diagnostics-color],
6306 [AC_HELP_STRING([--with-diagnostics-color={never,auto,auto-if-env,always}],
6307 [specify the default of -fdiagnostics-color option
6308 auto-if-env stands for -fdiagnostics-color=auto if
6309 GCC_COLOR environment variable is present and
6310 -fdiagnostics-color=never otherwise])],
6311 [case x"$withval" in
6313 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_NO
6316 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO
6319 DIAGNOSTICS_COLOR_DEFAULT=-1
6322 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_YES
6325 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-color])
6328 [DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO])
6329 AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT,
6330 [The default for -fdiagnostics-color option])
6332 # Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit
6333 # of jit/jit-playback.c.
6334 cat > gcc-driver-name.h <<EOF
6335 #define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_BASEVER}${exeext}"
6338 # Check whether --enable-default-pie was given.
6339 AC_ARG_ENABLE(default-pie,
6340 [AS_HELP_STRING([--enable-default-pie],
6341 [enable Position Independent Executable as default])],
6342 enable_default_pie=$enableval,
6343 enable_default_pie=no)
6344 if test x$enable_default_pie = xyes ; then
6345 AC_DEFINE(ENABLE_DEFAULT_PIE, 1,
6346 [Define if your target supports default PIE and it is enabled.])
6348 AC_SUBST([enable_default_pie])
6350 # Check if -fno-PIE works.
6351 AC_CACHE_CHECK([for -fno-PIE option],
6353 [saved_CXXFLAGS="$CXXFLAGS"
6354 CXXFLAGS="$CXXFLAGS -fno-PIE"
6355 AC_COMPILE_IFELSE([int main(void) {return 0;}],
6356 [gcc_cv_c_no_fpie=yes],
6357 [gcc_cv_c_no_fpie=no])
6358 CXXFLAGS="$saved_CXXFLAGS"])
6359 if test "$gcc_cv_c_no_fpie" = "yes"; then
6360 NO_PIE_CFLAGS="-fno-PIE"
6362 AC_SUBST([NO_PIE_CFLAGS])
6364 # Check if -no-pie works.
6365 AC_CACHE_CHECK([for -no-pie option],
6367 [saved_LDFLAGS="$LDFLAGS"
6368 LDFLAGS="$LDFLAGS -no-pie"
6369 AC_LINK_IFELSE([int main(void) {return 0;}],
6370 [gcc_cv_no_pie=yes],
6372 LDFLAGS="$saved_LDFLAGS"])
6373 if test "$gcc_cv_no_pie" = "yes"; then
6374 NO_PIE_FLAG="-no-pie"
6376 AC_SUBST([NO_PIE_FLAG])
6378 # Check linker supports '-z bndplt'
6379 ld_bndplt_support=no
6380 AC_MSG_CHECKING(linker -z bndplt option)
6381 if test x"$ld_is_gold" = xno; then
6382 if test $in_tree_ld = yes ; then
6383 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6384 ld_bndplt_support=yes
6386 elif test x$gcc_cv_ld != x; then
6387 # Check if linker supports -a bndplt option
6388 if $gcc_cv_ld --help 2>&1 | grep -- '-z bndplt' > /dev/null; then
6389 ld_bndplt_support=yes
6393 if test x"$ld_bndplt_support" = xyes; then
6394 AC_DEFINE(HAVE_LD_BNDPLT_SUPPORT, 1,
6395 [Define if your linker supports -z bndplt])
6397 AC_MSG_RESULT($ld_bndplt_support)
6399 # Check linker supports '--push-state'/'--pop-state'
6400 ld_pushpopstate_support=no
6401 AC_MSG_CHECKING(linker --push-state/--pop-state options)
6402 if test x"$ld_is_gold" = xno; then
6403 if test $in_tree_ld = yes ; then
6404 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6405 ld_pushpopstate_support=yes
6407 elif test x$gcc_cv_ld != x; then
6408 # Check if linker supports --push-state/--pop-state options
6409 if $gcc_cv_ld --help 2>&1 | grep -- '--push-state' > /dev/null; then
6410 ld_pushpopstate_support=yes
6414 if test x"$ld_pushpopstate_support" = xyes; then
6415 AC_DEFINE(HAVE_LD_PUSHPOPSTATE_SUPPORT, 1,
6416 [Define if your linker supports --push-state/--pop-state])
6418 AC_MSG_RESULT($ld_pushpopstate_support)
6420 # Configure the subdirectories
6421 # AC_CONFIG_SUBDIRS($subdirs)
6423 # Create the Makefile
6424 # and configure language subdirectories
6425 AC_CONFIG_FILES($all_outputs)
6427 AC_CONFIG_COMMANDS([default],
6429 case ${CONFIG_HEADERS} in
6430 *auto-host.h:config.in*)
6433 # Make sure all the subdirs exist.
6434 for d in $subdirs doc build common c-family
6436 test -d $d || mkdir $d
6439 [subdirs='$subdirs'])