2 # Process this file with autoconf to generate a configuration script.
4 # Copyright (C) 1997-2023 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 # --------------------------------
27 AC_CONFIG_SRCDIR(tree.cc)
28 AC_CONFIG_MACRO_DIRS([../config] [..])
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 # If both --with-sysroot and --with-gxx-include-dir are passed, we interpolate
209 # the former in the latter and, upon success, compute gcc_gxx_include_dir as
210 # relative to the sysroot.
211 gcc_gxx_include_dir_add_sysroot=0
213 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
214 if test x${gcc_gxx_include_dir} = x; then
215 if test x${enable_version_specific_runtime_libs} = xyes; then
216 gcc_gxx_include_dir='${libsubdir}/include/c++'
218 libstdcxx_incdir='include/c++/$(version)'
219 if test x$host != x$target; then
220 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
222 gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir"
224 elif test "${with_sysroot+set}" = set; then
225 gcc_gxx_without_sysroot=`expr "${gcc_gxx_include_dir}" : "${with_sysroot}"'\(.*\)'`
226 if test "${gcc_gxx_without_sysroot}"; then
227 gcc_gxx_include_dir="${gcc_gxx_without_sysroot}"
228 gcc_gxx_include_dir_add_sysroot=1
232 # Configuration for an alternate set of C++ headers.
233 gcc_gxx_libcxx_include_dir=
234 # Specify the alternate g++ header file directory
235 AC_ARG_WITH(gxx-libcxx-include-dir,
236 [AS_HELP_STRING([--with-gxx-libcxx-include-dir=DIR],
237 [specifies directory to find libc++ header files])],
238 [case "${withval}" in
239 yes) AC_MSG_ERROR(bad value ${withval} given for libc++ include directory) ;;
241 *) gcc_gxx_libcxx_include_dir=$with_gxx_libcxx_include_dir ;;
244 # If both --with-sysroot and --with-gxx-libcxx-include-dir are passed, we
245 # check to see if the latter starts with the former and, upon success, compute
246 # gcc_gxx_libcxx_include_dir as relative to the sysroot.
247 gcc_gxx_libcxx_include_dir_add_sysroot=0
249 if test x${gcc_gxx_libcxx_include_dir} != x; then
250 AC_DEFINE(ENABLE_STDLIB_OPTION, 1,
251 [Define if the -stdlib= option should be enabled.])
253 AC_DEFINE(ENABLE_STDLIB_OPTION, 0)
255 # ??? This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
256 if test x${gcc_gxx_libcxx_include_dir} = x; then
257 if test x${enable_version_specific_runtime_libs} = xyes; then
258 gcc_gxx_libcxx_include_dir='${libsubdir}/libc++_include/c++/v1'
260 libcxx_incdir='libc++_include/c++/$(version)/v1'
261 if test x$host != x$target; then
262 libcxx_incdir="$target_alias/$libcxx_incdir"
264 gcc_gxx_libcxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libcxx_incdir"
266 elif test "${with_sysroot+set}" = set; then
267 gcc_gxx_libcxx_without_sysroot=`expr "${gcc_gxx_libcxx_include_dir}" : "${with_sysroot}"'\(.*\)'`
268 if test "${gcc_gxx_libcxx_without_sysroot}"; then
269 gcc_gxx_libcxx_include_dir="${gcc_gxx_libcxx_without_sysroot}"
270 gcc_gxx_libcxx_include_dir_add_sysroot=1
274 AC_ARG_WITH(cpp_install_dir,
275 [AC_HELP_STRING([--with-cpp-install-dir=DIR],
276 [install the user visible C preprocessor in DIR
277 (relative to PREFIX) as well as PREFIX/bin])],
278 [if test x$withval = xyes; then
279 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
280 elif test x$withval != xno; then
281 cpp_install_dir=$withval
284 # We would like to our source tree to be readonly. However when releases or
285 # pre-releases are generated, the flex/bison generated files as well as the
286 # various formats of manuals need to be included along with the rest of the
287 # sources. Therefore we have --enable-generated-files-in-srcdir to do
290 AC_MSG_CHECKING([whether to place generated files in the source directory])
291 dnl generated-files-in-srcdir is disabled by default
292 AC_ARG_ENABLE(generated-files-in-srcdir,
293 [AS_HELP_STRING([--enable-generated-files-in-srcdir],
294 [put copies of generated files in source dir
295 intended for creating source tarballs for users
296 without texinfo bison or flex])],
297 generated_files_in_srcdir=$enableval,
298 generated_files_in_srcdir=no)
300 AC_MSG_RESULT($generated_files_in_srcdir)
302 if test "$generated_files_in_srcdir" = "yes"; then
309 # -------------------
310 # Find default linker
311 # -------------------
315 [AS_HELP_STRING([--with-gnu-ld], [arrange to work with GNU ld])],
316 gnu_ld_flag="$with_gnu_ld",
321 ld64_flag=yes # Darwin can only use a ld64-compatible linker.
322 dsymutil_flag=yes # Darwin uses dsymutil to link debug.
330 # With pre-defined ld
332 [AS_HELP_STRING([--with-ld], [arrange to use the specified ld (full pathname)])],
333 DEFAULT_LINKER="$with_ld")
334 if test x"${DEFAULT_LINKER+set}" = x"set"; then
335 if test ! -x "$DEFAULT_LINKER"; then
336 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
337 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
339 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep ld64- > /dev/null; then
342 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
343 [Define to enable the use of a default linker.])
346 AC_MSG_CHECKING([whether a default linker was specified])
347 if test x"${DEFAULT_LINKER+set}" = x"set"; then
348 if test x"$gnu_ld_flag" = x"no"; then
349 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
351 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
357 # With demangler in GNU ld
358 AC_ARG_WITH(demangler-in-ld,
359 [AS_HELP_STRING([--with-demangler-in-ld], [try to use demangler in GNU ld])],
360 demangler_in_ld="$with_demangler_in_ld",
363 # Allow the user to specify a dsymutil executable (used on Darwin only, so far)
364 AC_ARG_WITH(dsymutil,
365 [AS_HELP_STRING([--with-dsymutil], [arrange to use the specified dsymutil (full pathname)])],
366 DEFAULT_DSYMUTIL="$with_dsymutil")
369 if test x"${DEFAULT_DSYMUTIL+set}" = x"set"; then
370 if test ! -x "$DEFAULT_DSYMUTIL"; then
371 AC_MSG_ERROR([cannot execute: $DEFAULT_DSYMUTIL: check --with-dsymutil or env. var. DEFAULT_DSYMUTIL])
373 if dsymutil_vers=`$DEFAULT_DSYMUTIL -v /dev/null 2>&1`; then
377 AC_DEFINE_UNQUOTED(DEFAULT_DSYMUTIL,"$DEFAULT_DSYMUTIL",
378 [Define to enable the use of a default debug linker.])
381 AC_MSG_CHECKING([whether a default dsymutil was specified])
382 if test x"${DEFAULT_DSYMUTIL+set}" = x"set"; then
383 AC_MSG_RESULT([yes ($DEFAULT_DSYMUTIL)])
388 # ----------------------
389 # Find default assembler
390 # ----------------------
394 [AS_HELP_STRING([--with-gnu-as], [arrange to work with GNU as])],
395 gas_flag="$with_gnu_as",
399 [AS_HELP_STRING([--with-as], [arrange to use the specified as (full pathname)])],
400 DEFAULT_ASSEMBLER="$with_as")
401 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
402 if test ! -x "$DEFAULT_ASSEMBLER"; then
403 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
404 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
407 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
408 [Define to enable the use of a default assembler.])
411 AC_MSG_CHECKING([whether a default assembler was specified])
412 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
413 if test x"$gas_flag" = x"no"; then
414 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
416 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
426 # If a non-executable a.out is present (e.g. created by GNU as above even if
427 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
428 # file, even when creating an executable, so an execution test fails.
429 # Remove possible default executable files to avoid this.
431 # FIXME: This really belongs into AC_PROG_CC and can be removed once
432 # Autoconf includes it.
433 rm -f a.out a.exe b.out
435 # Find the native compiler
438 ACX_PROG_GNAT([-I"$srcdir"/ada/libgnat])
439 ACX_PROG_GDC([-I"$srcdir"/d])
441 # Do configure tests with the C++ compiler, since that's what we build with.
444 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
445 # optimizations to be activated explicitly by the toplevel.
448 *) CFLAGS=`echo "$CFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" `
449 CXXFLAGS=`echo "$CXXFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" ` ;;
455 # Determine PICFLAG for target gnatlib.
456 GCC_PICFLAG_FOR_TARGET
457 AC_SUBST(PICFLAG_FOR_TARGET)
459 # -------------------------
460 # Check C compiler features
461 # -------------------------
463 AC_USE_SYSTEM_EXTENSIONS
469 AC_CHECK_SIZEOF(ino_t)
470 AC_CHECK_SIZEOF(dev_t)
472 # Select the right stat being able to handle 64bit inodes, if needed.
473 if test "$enable_largefile" != no; then
474 case "$host, $build" in
475 *-*-aix*,*|*,*-*-aix*)
476 if test "$ac_cv_sizeof_ino_t" == "4" -a "$ac_cv_sizeof_dev_t" == 4; then
477 AC_DEFINE(HOST_STAT_FOR_64BIT_INODES, stat64x,
478 [Define which stat syscall is able to handle 64bit indodes.])
484 # sizeof(char) is 1 by definition.
485 AC_CHECK_SIZEOF(void *)
486 AC_CHECK_SIZEOF(short)
488 AC_CHECK_SIZEOF(long)
489 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
491 if test x"$ac_cv_c_uint64_t" = x"no" -o x"$ac_cv_c_int64_t" = x"no"; then
492 AC_MSG_ERROR([uint64_t or int64_t not found])
495 # check what underlying integer type int64_t uses
496 AC_CACHE_CHECK(for int64_t underlying type, ac_cv_int64_t_type, [
497 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
501 template <typename T> struct X { };
503 struct X<long> { typedef long t; };
504 ]], [[X<int64_t>::t x;]])],[ac_cv_int64_t_type=long],[ac_cv_int64_t_type="long long"])])
505 if test "$ac_cv_int64_t_type" = "long"; then
506 AC_DEFINE(INT64_T_IS_LONG, 1,
507 [Define if int64_t uses long as underlying type.])
509 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
513 template <typename T> struct X { };
515 struct X<long long> { typedef long long t; };
516 ]], [[X<int64_t>::t x;]])],[],[AC_MSG_ERROR([error verifying int64_t uses long long])])
519 AC_CACHE_CHECK(for std::swap in <utility>, ac_cv_std_swap_in_utility, [
520 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
522 ]], [[int a, b; std::swap(a,b);]])],[ac_cv_std_swap_in_utility=yes],[ac_cv_std_swap_in_utility=no])])
523 if test $ac_cv_std_swap_in_utility = yes; then
524 AC_DEFINE(HAVE_SWAP_IN_UTILITY, 1,
525 [Define if <utility> defines std::swap.])
528 # Check whether compiler is affected by placement new aliasing bug (PR 29286).
529 # If the host compiler is affected by the bug, and we build with optimization
530 # enabled (which happens e.g. when cross-compiling), the pool allocator may
531 # get miscompiled. Use -fno-strict-aliasing to work around this problem.
532 # Since there is no reliable feature check for the presence of this bug,
533 # we simply use a GCC version number check. (This should never trigger for
534 # stages 2 or 3 of a native bootstrap.)
536 if test "$GCC" = yes; then
537 saved_CXXFLAGS="$CXXFLAGS"
539 # The following test compilation will succeed if and only if $CXX accepts
540 # -fno-strict-aliasing *and* is older than GCC 4.3.
541 CXXFLAGS="$CXXFLAGS -fno-strict-aliasing"
542 AC_MSG_CHECKING([whether $CXX is affected by placement new aliasing bug])
543 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
544 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)
545 #error compiler not affected by placement new aliasing bug
548 [AC_MSG_RESULT([yes]); aliasing_flags='-fno-strict-aliasing'],
549 [AC_MSG_RESULT([no])])
551 CXXFLAGS="$saved_CXXFLAGS"
553 AC_SUBST(aliasing_flags)
557 # ---------------------
558 # Warnings and checking
559 # ---------------------
561 # Check $CC warning features (if it's GCC).
562 # We want to use -pedantic, but we don't want warnings about
566 # * C++11 narrowing conversions in { }
567 # So, we only use -pedantic if we can disable those warnings.
569 # In stage 1, disable -Wformat warnings from old GCCs about new % codes
570 AC_ARG_ENABLE(build-format-warnings,
571 AS_HELP_STRING([--disable-build-format-warnings],[don't use -Wformat while building GCC]),
572 [],[enable_build_format_warnings=yes])
573 AS_IF([test $enable_build_format_warnings = no],
574 [wf_opt=-Wno-format],[wf_opt=])
575 ACX_PROG_CXX_WARNING_OPTS(
576 m4_quote(m4_do([-W -Wall -Wno-narrowing -Wwrite-strings ],
577 [-Wcast-qual $wf_opt])),
579 ACX_PROG_CC_WARNING_OPTS(
580 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes ],
581 [])), [c_loose_warn])
582 ACX_PROG_CXX_WARNING_OPTS(
583 m4_quote(m4_do([-Wmissing-format-attribute ], [-Wconditionally-supported ],
584 [-Woverloaded-virtual])), [strict_warn])
585 ACX_PROG_CC_WARNING_OPTS(
586 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
587 ACX_PROG_CXX_WARNING_ALMOST_PEDANTIC(
588 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
589 [-Wno-overlength-strings])), [strict_warn])
590 ACX_PROG_CXX_WARNINGS_ARE_ERRORS([manual], [strict_warn])
592 # The above macros do nothing if the compiler is not GCC. However, the
593 # Makefile has more goo to add other flags, so these variables are used
594 # to enable warnings only for GCC.
597 if test "x$GCC" = "xyes"; then
598 warn_cflags='$(GCC_WARN_CFLAGS)'
599 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
601 AC_SUBST(warn_cflags)
602 AC_SUBST(warn_cxxflags)
604 # Disable exceptions and RTTI if building with g++
605 ACX_PROG_CC_WARNING_OPTS(
606 m4_quote(m4_do([-fno-exceptions -fno-rtti -fasynchronous-unwind-tables])),
609 # Enable expensive internal checks
611 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
615 AC_ARG_ENABLE(checking,
616 [AS_HELP_STRING([[--enable-checking[=LIST]]],
617 [enable expensive run-time checks. With LIST,
618 enable only specific categories of checks.
619 Categories are: yes,no,all,none,release.
620 Flags are: assert,df,extra,fold,gc,gcac,gimple,misc,
621 rtlflag,rtl,runtime,tree,valgrind,types])],
622 [ac_checking_flags="${enableval}"],[
623 # Determine the default checks.
624 if test x$is_release = x ; then
625 ac_checking_flags=yes,extra
627 ac_checking_flags=release
629 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
630 for check in release $ac_checking_flags
633 # these set all the flags to specific states
634 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
635 ac_fold_checking= ; ac_gc_checking=1 ; ac_extra_checking= ;
636 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
637 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
638 ac_tree_checking=1 ; ac_valgrind_checking= ;
639 ac_types_checking=1 ;;
640 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
641 ac_fold_checking= ; ac_gc_checking= ; ac_extra_checking= ;
642 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
643 ac_rtlflag_checking= ; ac_runtime_checking= ;
644 ac_tree_checking= ; ac_valgrind_checking= ;
645 ac_types_checking= ;;
646 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
647 ac_fold_checking=1 ; ac_gc_checking=1 ; ac_extra_checking=1 ;
648 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
649 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
650 ac_tree_checking=1 ; ac_valgrind_checking= ;
651 ac_types_checking=1 ;;
652 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
653 ac_fold_checking= ; ac_gc_checking= ; ac_extra_checking= ;
654 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
655 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
656 ac_tree_checking= ; ac_valgrind_checking= ;
657 ac_types_checking= ;;
658 # these enable particular checks
659 assert) ac_assert_checking=1 ;;
660 df) ac_df_checking=1 ;;
661 extra) ac_extra_checking=1 ;;
662 fold) ac_fold_checking=1 ;;
663 gc) ac_gc_checking=1 ;;
664 gcac) ac_gc_always_collect=1 ;;
665 gimple) ac_gimple_checking=1 ;;
666 misc) ac_checking=1 ;;
667 rtl) ac_rtl_checking=1 ;;
668 rtlflag) ac_rtlflag_checking=1 ;;
669 runtime) ac_runtime_checking=1 ;;
670 tree) ac_tree_checking=1 ;;
671 types) ac_types_checking=1 ;;
672 valgrind) ac_valgrind_checking=1 ;;
673 *) AC_MSG_ERROR(unknown check category $check) ;;
679 if test x$ac_checking != x ; then
680 AC_DEFINE(CHECKING_P, 1,
681 [Define to 0/1 if you want more run-time sanity checks. This one gets a grab
682 bag of miscellaneous but relatively cheap checks.])
683 nocommon_flag=-fno-common
685 AC_DEFINE(CHECKING_P, 0)
687 AC_SUBST(nocommon_flag)
688 if test x$ac_extra_checking != x ; then
689 AC_DEFINE(ENABLE_EXTRA_CHECKING, 1,
690 [Define to 0/1 if you want extra run-time checking that might affect code
693 AC_DEFINE(ENABLE_EXTRA_CHECKING, 0)
695 if test x$ac_df_checking != x ; then
696 AC_DEFINE(ENABLE_DF_CHECKING, 1,
697 [Define if you want more run-time sanity checks for dataflow.])
699 if test x$ac_assert_checking != x ; then
700 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
701 [Define if you want assertions enabled. This is a cheap check.])
703 if test x$ac_gimple_checking != x ; then
704 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
705 [Define if you want operations on GIMPLE (the basic data structure of
706 the high-level optimizers) to be checked for dynamic type safety at
707 runtime. This is moderately expensive.])
709 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
710 if test x$ac_runtime_checking != x ; then
711 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
712 [Define if you want runtime assertions enabled. This is a cheap check.])
714 if test x$ac_tree_checking != x ; then
715 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
716 [Define if you want all operations on trees (the basic data
717 structure of the front ends) to be checked for dynamic type safety
718 at runtime. This is moderately expensive.
722 if test x$ac_types_checking != x ; then
723 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
724 [Define if you want all gimple types to be verified after gimplifiation.
728 AC_SUBST(TREECHECKING)
729 if test x$ac_rtl_checking != x ; then
730 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
731 [Define if you want all operations on RTL (the basic data structure
732 of the optimizer and back end) to be checked for dynamic type safety
733 at runtime. This is quite expensive.])
735 if test x$ac_rtlflag_checking != x ; then
736 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
737 [Define if you want RTL flag accesses to be checked against the RTL
738 codes that are supported for each access macro. This is relatively
741 if test x$ac_gc_checking != x ; then
742 AC_DEFINE(ENABLE_GC_CHECKING, 1,
743 [Define if you want the garbage collector to do object poisoning and
744 other memory allocation checks. This is quite expensive.])
746 if test x$ac_gc_always_collect != x ; then
747 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
748 [Define if you want the garbage collector to operate in maximally
749 paranoid mode, validating the entire heap and collecting garbage at
750 every opportunity. This is extremely expensive.])
752 if test x$ac_fold_checking != x ; then
753 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
754 [Define if you want fold checked that it never destructs its argument.
755 This is quite expensive.])
757 valgrind_path_defines=
760 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
761 dnl # an if statement. This was the source of very frustrating bugs
762 dnl # in converting to autoconf 2.5x!
763 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
765 # It is certainly possible that there's valgrind but no valgrind.h.
766 # GCC relies on making annotations so we must have both.
767 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
768 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
769 [[#include <valgrind/memcheck.h>
770 #ifndef VALGRIND_DISCARD
771 #error VALGRIND_DISCARD not defined
773 [gcc_cv_header_valgrind_memcheck_h=yes],
774 [gcc_cv_header_valgrind_memcheck_h=no])
775 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
776 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
777 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
778 [[#include <memcheck.h>
779 #ifndef VALGRIND_DISCARD
780 #error VALGRIND_DISCARD not defined
782 [gcc_cv_header_memcheck_h=yes],
783 [gcc_cv_header_memcheck_h=no])
784 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
785 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
786 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
787 [Define if valgrind's valgrind/memcheck.h header is installed.])
789 if test $gcc_cv_header_memcheck_h = yes; then
790 AC_DEFINE(HAVE_MEMCHECK_H, 1,
791 [Define if valgrind's memcheck.h header is installed.])
794 if test x$ac_valgrind_checking != x ; then
795 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
796 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
797 if test "x$valgrind_path" = "x" \
798 || (test $have_valgrind_h = no \
799 && test $gcc_cv_header_memcheck_h = no \
800 && test $gcc_cv_header_valgrind_memcheck_h = no); then
801 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
803 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
804 valgrind_command="$valgrind_path -q"
805 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
806 [Define if you want to run subprograms and generated programs
807 through valgrind (a memory checker). This is extremely expensive.])
809 AC_SUBST(valgrind_path_defines)
810 AC_SUBST(valgrind_command)
812 # Enable code coverage collection
813 AC_ARG_ENABLE(coverage,
814 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
815 [enable compiler's code coverage collection.
816 Use to measure compiler performance and locate
817 unused parts of the compiler. With LEVEL, specify
818 optimization. Values are opt, noopt,
820 [case "${enableval}" in
822 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0 -fkeep-static-functions"
825 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2 -fkeep-static-functions"
828 # a.k.a. --disable-coverage
832 AC_MSG_ERROR(unknown coverage setting $enableval)
836 AC_SUBST(coverage_flags)
838 AC_ARG_ENABLE(gather-detailed-mem-stats,
839 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
840 [enable detailed memory allocation stats gathering])], [],
841 [enable_gather_detailed_mem_stats=no])
842 gather_stats=`if test $enable_gather_detailed_mem_stats != no; then echo 1; else echo 0; fi`
843 AC_DEFINE_UNQUOTED(GATHER_STATISTICS, $gather_stats,
844 [Define to enable detailed memory allocation stats gathering.])
846 AC_ARG_ENABLE(valgrind-annotations,
847 [AS_HELP_STRING([--enable-valgrind-annotations],
848 [enable valgrind runtime interaction])], [],
849 [enable_valgrind_annotations=no])
850 if test x$enable_valgrind_annotations != xno \
851 || test x$ac_valgrind_checking != x; then
852 if (test $have_valgrind_h = no \
853 && test $gcc_cv_header_memcheck_h = no \
854 && test $gcc_cv_header_valgrind_memcheck_h = no); then
855 AC_MSG_ERROR([*** Can't find valgrind/memcheck.h, memcheck.h or valgrind.h])
857 AC_DEFINE(ENABLE_VALGRIND_ANNOTATIONS, 1,
858 [Define to get calls to the valgrind runtime enabled.])
861 # -------------------------------
862 # Miscenalleous configure options
863 # -------------------------------
865 # Determine whether or not multilibs are enabled.
866 AC_ARG_ENABLE(multilib,
867 [AS_HELP_STRING([--enable-multilib],
868 [enable library support for multiple ABIs])],
869 [], [enable_multilib=yes])
870 AC_SUBST(enable_multilib)
872 # Determine whether or not multiarch is enabled.
873 AC_ARG_ENABLE(multiarch,
874 [AS_HELP_STRING([--enable-multiarch],
875 [enable support for multiarch paths])],
876 [case "${enableval}" in
877 yes|no|auto) enable_multiarch=$enableval;;
878 *) AC_MSG_ERROR(bad value ${enableval} given for --enable-multiarch option) ;;
879 esac], [enable_multiarch=auto])
880 if test x${enable_multiarch} = xauto; then
881 if test x${with_native_system_header_dir} != x; then
882 ma_msg_suffix=", disabled auto check (configured with --native-system-header-dir)"
885 if test x$host != x$target && test "x$with_sysroot" = x; then
886 ma_msg_suffix=", disabled auto check (cross build configured without --with-sysroot)"
890 if test x${enable_multiarch} = xyes; then
891 AC_DEFINE(ENABLE_MULTIARCH, 1, [If --with-multiarch option is used])
893 AC_MSG_CHECKING(for multiarch configuration)
894 AC_SUBST(enable_multiarch)
895 AC_MSG_RESULT($enable_multiarch$ma_msg_suffix)
897 # needed for setting the multiarch name for soft-float/hard-float ABIs
901 # default stack clash protection guard size as power of twos in bytes.
902 # Please keep these in sync with params.def.
906 # Keep the default value when the option is not used to 0, this allows us to
907 # distinguish between the cases where the user specifially set a value via
908 # configure and when the normal default value is used.
909 AC_ARG_WITH(stack-clash-protection-guard-size,
910 [AS_HELP_STRING([--with-stack-clash-protection-guard-size=size],
911 [Set the default stack clash protection guard size for specific targets as a power of two in bytes.])],
912 [DEFAULT_STK_CLASH_GUARD_SIZE="$with_stack_clash_protection_guard_size"], [DEFAULT_STK_CLASH_GUARD_SIZE=0])
913 if test $DEFAULT_STK_CLASH_GUARD_SIZE -ne 0 \
914 && (test $DEFAULT_STK_CLASH_GUARD_SIZE -lt $stk_clash_min \
915 || test $DEFAULT_STK_CLASH_GUARD_SIZE -gt $stk_clash_max); then
916 AC_MSG_ERROR(m4_normalize([
917 Invalid value $DEFAULT_STK_CLASH_GUARD_SIZE for --with-stack-clash-protection-guard-size. \
918 Must be between $stk_clash_min and $stk_clash_max.]))
921 AC_DEFINE_UNQUOTED(DEFAULT_STK_CLASH_GUARD_SIZE, $DEFAULT_STK_CLASH_GUARD_SIZE,
922 [Define to larger than zero set the default stack clash protector size.])
924 # Specify the number of splits of match.pd to generate.
925 AC_ARG_WITH(matchpd-partitions,
926 [AS_HELP_STRING([--with-matchpd-partitions=num],
927 [Set the number of partitions to make for gimple and generic when splitting match.pd. [default=10]])],
928 [DEFAULT_MATCHPD_PARTITIONS="$with_matchpd_partitions"], [DEFAULT_MATCHPD_PARTITIONS=10])
929 if (test $DEFAULT_MATCHPD_PARTITIONS -lt 1); then
930 AC_MSG_ERROR(m4_normalize([
931 Invalid value $DEFAULT_MATCHPD_PARTITIONS for --with-matchpd-partitions. \
932 Cannot be negative.]))
935 AC_DEFINE_UNQUOTED(DEFAULT_MATCHPD_PARTITIONS, $DEFAULT_MATCHPD_PARTITIONS,
936 [Define to larger than one set the number of match.pd partitions to make.])
937 AC_SUBST(DEFAULT_MATCHPD_PARTITIONS)
939 # Enable __cxa_atexit for C++.
940 AC_ARG_ENABLE(__cxa_atexit,
941 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
944 # Enable C extension for decimal float if target supports it.
945 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
947 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
948 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
949 [Define to 1 to enable decimal float extension to C.])
951 # Use default_decimal_float for dependency.
952 enable_decimal_float=$default_decimal_float
954 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
955 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
956 [Define to 1 to specify that we are using the BID decimal floating
957 point format instead of DPD])
959 # Enable C extension for fixed-point arithmetic.
960 AC_ARG_ENABLE(fixed-point,
961 [AS_HELP_STRING([--enable-fixed-point],
962 [enable fixed-point arithmetic extension to C])],
967 enable_fixed_point=yes
971 enable_fixed_point=yes
974 enable_fixed_point=yes
977 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
978 enable_fixed_point=no
982 AC_SUBST(enable_fixed_point)
984 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
985 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
986 [Define to 1 to enable fixed-point arithmetic extension to C.])
989 # Pass with no value to take the default
990 # Pass with a value to specify a thread package
991 AC_ARG_ENABLE(threads,
992 [AS_HELP_STRING([[--enable-threads[=LIB]]],
993 [enable thread usage for target GCC,
994 using LIB thread package])],,
998 [AS_HELP_STRING([--enable-tls],
999 [enable or disable generation of tls code
1000 overriding the assembler check for tls support])],
1004 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
1005 Valid choices are 'yes' and 'no'.]) ;;
1009 AC_ARG_ENABLE(vtable-verify,
1010 [AS_HELP_STRING([--enable-vtable-verify],
1011 [enable vtable verification feature])],,
1012 [enable_vtable_verify=no])
1013 vtable_verify=`if test x$enable_vtable_verify = xyes; then echo 1; else echo 0; fi`
1014 AC_DEFINE_UNQUOTED(ENABLE_VTABLE_VERIFY, $vtable_verify,
1015 [Define 0/1 if vtable verification feature is enabled.])
1017 AC_ARG_ENABLE(analyzer,
1018 [AS_HELP_STRING([--disable-analyzer],
1019 [disable -fanalyzer static analyzer])],
1020 if test x$enable_analyzer = xno; then
1026 AC_DEFINE_UNQUOTED(ENABLE_ANALYZER, $analyzer,
1027 [Define 0/1 if static analyzer feature is enabled.])
1029 AC_ARG_ENABLE(objc-gc,
1030 [AS_HELP_STRING([--enable-objc-gc],
1031 [enable the use of Boehm's garbage collector with
1032 the GNU Objective-C runtime])],
1033 if test x$enable_objc_gc = xno; then
1041 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2 (or later)])],
1042 dwarf2="$with_dwarf2",
1045 AC_ARG_ENABLE(shared,
1046 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
1048 case $enable_shared in
1052 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
1053 for pkg in $enableval; do
1054 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
1061 ], [enable_shared=yes])
1062 AC_SUBST(enable_shared)
1065 [ --disable-gcov don't provide libgcov and related host tools],
1066 [], [case $target in
1075 AC_SUBST(enable_gcov)
1078 [AS_HELP_STRING([--with-specs=SPECS],
1079 [add SPECS to driver command-line processing])],
1080 [CONFIGURE_SPECS=$withval],
1083 AC_SUBST(CONFIGURE_SPECS)
1085 ACX_PKGVERSION([GCC])
1086 ACX_BUGURL([https://gcc.gnu.org/bugs/])
1088 # Allow overriding the default URL for documentation
1089 AC_ARG_WITH(documentation-root-url,
1090 AS_HELP_STRING([--with-documentation-root-url=URL],
1091 [Root for documentation URLs]),
1093 yes) AC_MSG_ERROR([documentation root URL not specified]) ;;
1094 no) AC_MSG_ERROR([documentation root URL not specified]) ;;
1095 */) DOCUMENTATION_ROOT_URL="$withval" ;;
1096 *) AC_MSG_ERROR([documentation root URL does not end with /]) ;;
1098 DOCUMENTATION_ROOT_URL="https://gcc.gnu.org/onlinedocs/"
1100 AC_DEFINE_UNQUOTED(DOCUMENTATION_ROOT_URL,"$DOCUMENTATION_ROOT_URL",
1101 [Define to the root for documentation URLs.])
1103 # Allow overriding the default URL for GCC changes
1104 AC_ARG_WITH(changes-root-url,
1105 AS_HELP_STRING([--with-changes-root-url=URL],
1106 [Root for GCC changes URLs]),
1108 yes) AC_MSG_ERROR([changes root URL not specified]) ;;
1109 no) AC_MSG_ERROR([changes root URL not specified]) ;;
1110 */) CHANGES_ROOT_URL="$withval" ;;
1111 *) AC_MSG_ERROR([changes root URL does not end with /]) ;;
1113 CHANGES_ROOT_URL="https://gcc.gnu.org/"
1115 AC_DEFINE_UNQUOTED(CHANGES_ROOT_URL,"$CHANGES_ROOT_URL",
1116 [Define to the root for URLs about GCC changes.])
1118 # Sanity check enable_languages in case someone does not run the toplevel
1119 # configure # script.
1120 AC_ARG_ENABLE(languages,
1121 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
1122 [case ,${enable_languages}, in
1124 # go safe -- we cannot be much sure without the toplevel
1126 # analysis of which target libs are present and usable
1130 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
1135 enable_languages=c,${enable_languages}
1138 [enable_languages=c])
1140 # If top-level libada has been disabled, then wire in install-gnatlib
1141 # invocation with `make install', so that one can build and install
1142 # the library manually with `make -C gcc all gnatlib gnattools install'.
1143 if test x"$enable_libada" = xno; then
1144 gnat_install_lib=gnat-install-lib
1148 AC_SUBST(gnat_install_lib)
1150 if test x"$enable_as_accelerator_for" != x; then
1151 AC_DEFINE(ACCEL_COMPILER, 1,
1152 [Define if this compiler should be built as the offload target compiler.])
1153 enable_as_accelerator=yes
1154 sedscript="s#${target_noncanonical}#${enable_as_accelerator_for}-accel-${target_noncanonical}#"
1155 program_transform_name=`echo $program_transform_name | sed $sedscript`
1156 accel_dir_suffix=/accel/${target_noncanonical}
1157 real_target_noncanonical=${enable_as_accelerator_for}
1159 AC_SUBST(enable_as_accelerator)
1160 AC_SUBST(real_target_noncanonical)
1161 AC_SUBST(accel_dir_suffix)
1163 for tgt in `echo $enable_offload_targets | sed 's/,/ /g'`; do
1164 tgt=`echo $tgt | sed 's/=.*//'`
1169 omp_device_property=omp-device-properties-gcn
1170 omp_device_property_tmake_file="${omp_device_property_tmake_file} \$(srcdir)/config/gcn/t-omp-device"
1173 omp_device_property=omp-device-properties-nvptx
1174 omp_device_property_tmake_file="${omp_device_property_tmake_file} \$(srcdir)/config/nvptx/t-omp-device"
1177 AC_MSG_ERROR([unknown offload target specified])
1180 omp_device_properties="${omp_device_properties} ${tgt}=${omp_device_property}"
1181 omp_device_property_deps="${omp_device_property_deps} ${omp_device_property}"
1183 if test x"$offload_targets" = x; then
1184 offload_targets=$tgt
1186 offload_targets="$offload_targets,$tgt"
1189 AC_SUBST(omp_device_properties)
1190 AC_SUBST(omp_device_property_deps)
1192 AC_DEFINE_UNQUOTED(OFFLOAD_TARGETS, "$offload_targets",
1193 [Define to offload targets, separated by commas.])
1194 if test x"$enable_offloading" != x; then
1195 AC_DEFINE(ENABLE_OFFLOADING, 1,
1196 [Define this to enable support for offloading.])
1198 AC_DEFINE(ENABLE_OFFLOADING, 0,
1199 [Define this to enable support for offloading.])
1202 if test "x$enable_offload_defaulted" = xyes; then
1203 AC_DEFINE(OFFLOAD_DEFAULTED, 1,
1204 [Define to 1 to if -foffload is defaulted])
1207 AC_ARG_WITH(multilib-list,
1208 [AS_HELP_STRING([--with-multilib-list], [select multilibs (AArch64, ARM, AVR, OR1K, RISC-V, SH and x86-64 only)])],
1210 with_multilib_list=default)
1212 AC_ARG_WITH(multilib-generator,
1213 [AS_HELP_STRING([--with-multilib-generator], [Multi-libs configuration string (RISC-V only)])],
1215 with_multilib_generator=default)
1217 # -------------------------
1218 # Checks for other programs
1219 # -------------------------
1223 # Find some useful tools
1225 # We need awk to create options.cc and options.h.
1226 # Bail out if it's missing.
1228 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
1235 AC_SUBST(ranlib_flags)
1239 # See if cmp has --ignore-initial.
1240 gcc_AC_PROG_CMP_IGNORE_INITIAL
1242 # See if we have the mktemp command.
1243 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
1245 # See if makeinfo has been installed and is modern enough
1246 # that we can use it.
1247 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
1248 [GNU texinfo.* \([0-9][0-9.]*\)],
1249 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
1250 if test $gcc_cv_prog_makeinfo_modern = no; then
1252 *** Makeinfo is missing or too old.
1253 *** Info documentation will not be built.])
1258 AC_SUBST(BUILD_INFO)
1260 # Determine whether makeinfo supports the CONTENTS_OUTPUT_LOCATION variable.
1261 # If it does, we want to pass it to makeinfo in order to restore the old
1262 # behavior of @{summary,}contents placement.
1263 MAKEINFO_TOC_INLINE_FLAG=
1264 AS_IF([test x"$MAKEINFO" != x], [
1265 AC_CACHE_CHECK([for CONTENTS_OUTPUT_LOCATION support in $MAKEINFO],
1266 [gcc_cv_texi_add_toc_inline_flags], [
1267 # Detect the unknown variable CONTENTS_OUTPUT_LOCATION warning
1268 if "$MAKEINFO" -c CONTENTS_OUTPUT_LOCATION=inline </dev/null 2>&1 \
1269 | grep CONTENTS_OUTPUT_LOCATION >/dev/null; then
1270 gcc_cv_texi_add_toc_inline_flags=no
1272 gcc_cv_texi_add_toc_inline_flags=yes
1275 if test x"$gcc_cv_texi_add_toc_inline_flags" = xyes; then
1276 MAKEINFO_TOC_INLINE_FLAG='-c CONTENTS_OUTPUT_LOCATION=inline'
1279 AC_SUBST([MAKEINFO_TOC_INLINE_FLAG])
1281 # Is pod2man recent enough to regenerate manpages?
1282 AC_MSG_CHECKING([for recent Pod::Man])
1283 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
1285 GENERATED_MANPAGES=generated-manpages
1290 AC_SUBST(GENERATED_MANPAGES)
1292 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
1295 dnl Don't use AC_PROG_LEX; we insist on flex.
1296 dnl LEXLIB is not useful in gcc.
1297 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
1300 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
1303 ACX_CHECK_PROG_VER(PYTHON, python3, --version,
1304 [Python.* \([0-9][0-9.]*\)],
1305 [3.[4-9]*|3.[1-9][0-9]*|[4-9].*|[1-9][0-9]*])
1306 if test $gcc_cv_prog_python3_modern = no; then
1308 *** Python3 is missing.
1309 *** Documentation for modula-2 will not include the target SYSTEM module.])
1314 AC_SUBST(HAVE_PYTHON)
1316 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
1317 # check for build == host before using them.
1320 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
1321 && test -d ../binutils ; then
1322 NM='${objdir}/../binutils/nm-new'
1324 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
1328 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
1329 && test -d ../binutils ; then
1330 AR='${objdir}/../binutils/ar'
1332 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
1335 # The jit documentation looks better if built with sphinx, but can be
1336 # built with texinfo if sphinx is not available.
1337 # Set "doc_build_sys" to "sphinx" or "texinfo" accordingly.
1338 AC_CHECK_PROG(doc_build_sys, sphinx-build, sphinx, texinfo)
1340 # --------------------
1341 # Checks for C headers
1342 # --------------------
1344 # Need to reject headers which give warnings, so that the -Werror bootstrap
1345 # works later. *sigh* This needs to come before all header checks.
1352 AC_HEADER_TIOCGWINSZ
1353 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
1354 fcntl.h ftw.h unistd.h sys/auxv.h sys/file.h sys/time.h sys/mman.h \
1355 sys/resource.h sys/param.h sys/times.h sys/stat.h sys/locking.h \
1356 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
1358 # Check for thread headers.
1359 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
1360 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
1362 # These tests can't be done till we know if we have limits.h.
1366 # ----------------------
1367 # Checks for C++ headers
1368 # ----------------------
1370 dnl Autoconf will give an error in the configure script if there is no
1371 dnl C++ preprocessor. Hack to prevent that.
1372 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
1374 m4_popdef([AC_MSG_ERROR])[]dnl
1376 AC_CHECK_HEADERS(unordered_map)
1377 AC_CHECK_HEADERS(tr1/unordered_map)
1378 AC_CHECK_HEADERS(ext/hash_map)
1381 # Dependency checking.
1385 AC_CONFIG_COMMANDS([gccdepdir],[
1386 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR
1387 for lang in $subdirs c-family common analyzer rtl-ssa
1389 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs $lang/$DEPDIR
1390 done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR])
1392 ZW_PROG_COMPILER_DEPENDENCIES([CXX])
1399 # These libraries may be used by collect2.
1400 # We may need a special search path to get them linked.
1401 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
1403 for libs in '' -lld -lmld \
1404 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
1405 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1408 AC_TRY_LINK_FUNC(ldopen,
1409 [gcc_cv_collect2_libs="$libs"; break])
1412 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1413 case $gcc_cv_collect2_libs in
1415 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1417 AC_SUBST(COLLECT2_LIBS)
1419 # When building Ada code on Alpha, we need exc_resume which is usually in
1420 # -lexc. So test for it.
1423 AC_SEARCH_LIBS(exc_resume, exc)
1426 AC_SUBST(GNAT_LIBEXC)
1428 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1431 AC_SEARCH_LIBS(kstat_open, kstat)
1432 EXTRA_GCC_LIBS="$LIBS"
1434 AC_SUBST(EXTRA_GCC_LIBS)
1436 # Solaris needs libsocket and libnsl for socket functions before 11.4.
1437 # C++ needs those for libcody.
1445 # Some systems put ldexp and frexp in libm instead of libc; assume
1446 # they're both in the same place. jcf-dump needs them.
1449 AC_SEARCH_LIBS(ldexp, m)
1454 # Some systems need dlopen
1457 AC_SEARCH_LIBS(dlopen, dl)
1462 # Use <inttypes.h> only if it exists,
1463 # doesn't clash with <sys/types.h>, declares intmax_t and defines
1465 AC_MSG_CHECKING(for inttypes.h)
1466 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1467 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1468 [[#define __STDC_FORMAT_MACROS
1469 #include <sys/types.h>
1470 #include <inttypes.h>]],
1475 [gcc_cv_header_inttypes_h=yes],
1476 [gcc_cv_header_inttypes_h=no])])
1477 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1478 if test $gcc_cv_header_inttypes_h = yes; then
1479 AC_DEFINE(HAVE_INTTYPES_H, 1,
1480 [Define if you have a working <inttypes.h> header file.])
1483 # Look for the ZSTD package.
1486 AC_SUBST(ZSTD_INCLUDE)
1490 AC_SUBST(ZSTD_CPPFLAGS)
1491 AC_SUBST(ZSTD_LDFLAGS)
1493 [AS_HELP_STRING([--with-zstd=PATH],
1494 [specify prefix directory for installed zstd library.
1495 Equivalent to --with-zstd-include=PATH/include
1496 plus --with-zstd-lib=PATH/lib])])
1497 AC_ARG_WITH(zstd-include,
1498 [AS_HELP_STRING([--with-zstd-include=PATH],
1499 [specify directory for installed zstd include files])])
1500 AC_ARG_WITH(zstd-lib,
1501 [AS_HELP_STRING([--with-zstd-lib=PATH],
1502 [specify directory for the installed zstd library])])
1503 case "x$with_zstd" in
1509 *) ZSTD_INCLUDE=$with_zstd/include
1510 ZSTD_LIB=$with_zstd/lib
1514 if test "x$with_zstd" != xno; then
1515 if test "x$with_zstd_include" != x; then
1516 ZSTD_INCLUDE=$with_zstd_include
1518 if test "x$with_zstd_lib" != x; then
1519 ZSTD_LIB=$with_zstd_lib
1521 if test "x$ZSTD_INCLUDE" != x \
1522 && test "x$ZSTD_INCLUDE" != xno; then
1523 ZSTD_CPPFLAGS=-I$ZSTD_INCLUDE
1525 if test "x$ZSTD_LIB" != x \
1526 && test "x$ZSTD_LIB" != xno; then
1527 ZSTD_LDFLAGS=-L$ZSTD_LIB
1530 CXXFLAGS="$CXXFLAGS $ZSTD_CPPFLAGS"
1531 LDFLAGS="$LDFLAGS $ZSTD_LDFLAGS"
1533 # LTO can use zstd compression algorithm
1536 AC_SEARCH_LIBS(ZSTD_compress, zstd,, gcc_cv_header_zstd_h=no)
1541 AC_MSG_CHECKING(for zstd.h)
1542 AC_CACHE_VAL(gcc_cv_header_zstd_h,
1543 # We require version 1.3.0 or later. This is the first version that has
1544 # ZSTD_getFrameContentSize.
1545 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1547 #if ZSTD_VERSION_NUMBER < 10300
1548 #error "need zstd 1.3.0 or better"
1550 [gcc_cv_header_zstd_h=yes],
1551 [gcc_cv_header_zstd_h=no])])
1552 AC_MSG_RESULT($gcc_cv_header_zstd_h)
1553 if test $gcc_cv_header_zstd_h = yes; then
1554 AC_DEFINE(HAVE_ZSTD_H, 1,
1555 [Define if you have a working <zstd.h> header file.])
1556 elif test "x$with_zstd" != x; then
1557 as_fn_error $? "Unable to find zstd.h. See config.log for details." "$LINENO" 5
1561 dnl Disabled until we have a complete test for buggy enum bitfields.
1562 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1564 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1565 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1566 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1567 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1568 putchar_unlocked putc_unlocked)
1569 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoq \
1570 popen sysconf strsignal getrusage nl_langinfo \
1571 gettimeofday mbstowcs wcswidth mmap posix_fallocate setlocale \
1572 gcc_UNLOCKED_FUNCS madvise mallinfo mallinfo2 fstatat getauxval)
1574 if test x$ac_cv_func_mbstowcs = xyes; then
1575 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1576 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1582 [gcc_cv_func_mbstowcs_works=yes],
1583 [gcc_cv_func_mbstowcs_works=no],
1584 [gcc_cv_func_mbstowcs_works=yes])])
1585 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1586 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1587 [Define this macro if mbstowcs does not crash when its
1588 first argument is NULL.])
1592 AC_CHECK_TYPE(ssize_t, int)
1593 AC_CHECK_TYPE(caddr_t, char *)
1594 AC_CHECK_TYPE(sighander_t,
1595 AC_DEFINE(HAVE_SIGHANDLER_T, 1,
1596 [Define if <sys/signal.h> defines sighandler_t]),
1599 GCC_AC_FUNC_MMAP_BLACKLIST
1603 # Under VMS, vfork works very differently than on Unix. The standard test
1604 # won't work, and it isn't easily adaptable. It makes more sense to
1606 ac_cv_func_vfork_works=yes
1613 # Until we have in-tree GNU iconv:
1615 if test -f "$LTLIBICONV"; then
1616 LIBICONV_DEP=$LTLIBICONV
1618 AC_SUBST(LIBICONV_DEP)
1624 # We will need to find libiberty.h and ansidecl.h
1625 saved_CFLAGS="$CFLAGS"
1626 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1627 saved_CXXFLAGS="$CXXFLAGS"
1628 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1630 # gcc_AC_CHECK_DECLS doesn't support overloaded functions, so use the
1631 # normal autoconf function for these. But force definition of
1632 # HAVE_DECL_BASENAME like gcc_AC_CHECK_DECLS does, to suppress the bizarre
1633 # basename handling in libiberty.h.
1634 AC_CHECK_DECLS([basename(const char*), strstr(const char*,const char*)], , ,[
1635 #undef HAVE_DECL_BASENAME
1636 #define HAVE_DECL_BASENAME 1
1637 #include "ansidecl.h"
1638 #include "system.h"])
1640 gcc_AC_CHECK_DECLS(getenv atol atoll asprintf sbrk abort atof getcwd getwd \
1641 madvise stpcpy strnlen strsignal strverscmp \
1642 strtol strtoul strtoll strtoull setenv unsetenv \
1643 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1644 free getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1645 #include "ansidecl.h"
1646 #include "system.h"])
1648 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1649 #include "ansidecl.h"
1651 #ifdef HAVE_SYS_RESOURCE_H
1652 #include <sys/resource.h>
1656 gcc_AC_CHECK_DECLS(mallinfo mallinfo2, , ,[
1657 #include "ansidecl.h"
1659 #ifdef HAVE_MALLOC_H
1664 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1665 #include "ansidecl.h"
1667 #ifdef HAVE_SYS_RESOURCE_H
1668 #include <sys/resource.h>
1670 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1671 [Define to `long' if <sys/resource.h> doesn't define.])])
1673 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1674 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1675 # in collect2.cc, <fcntl.h> isn't visible, but the configure test below needs
1676 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1677 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1678 #include "ansidecl.h"
1687 gcc_AC_CHECK_DECLS(times, , ,[
1688 #include "ansidecl.h"
1690 #ifdef HAVE_SYS_TIMES_H
1691 #include <sys/times.h>
1695 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1696 #include "ansidecl.h"
1701 # More time-related stuff.
1702 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1703 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1704 #include "ansidecl.h"
1706 #ifdef HAVE_SYS_TIMES_H
1707 #include <sys/times.h>
1709 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1710 if test $ac_cv_struct_tms = yes; then
1711 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1712 [Define if <sys/times.h> defines struct tms.])
1715 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1716 # revisit after autoconf 2.50.
1717 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1718 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1719 #include "ansidecl.h"
1721 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1722 if test $gcc_cv_type_clock_t = yes; then
1723 AC_DEFINE(HAVE_CLOCK_T, 1,
1724 [Define if <time.h> defines clock_t.])
1727 # Check if F_SETLKW is supported by fcntl.
1728 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1729 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1730 #include <fcntl.h>]], [[
1736 return fcntl (1, F_SETLKW, &fl);]])],
1737 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1738 if test $ac_cv_f_setlkw = yes; then
1739 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1740 [Define if F_SETLKW supported by fcntl.])
1743 # Check if O_CLOEXEC is defined by fcntl
1744 AC_CACHE_CHECK(for O_CLOEXEC, ac_cv_o_cloexec, [
1745 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1746 #include <fcntl.h>]], [[
1747 return open ("/dev/null", O_RDONLY | O_CLOEXEC);]])],
1748 [ac_cv_o_cloexec=yes],[ac_cv_o_cloexec=no])])
1749 if test $ac_cv_o_cloexec = yes; then
1750 AC_DEFINE(HOST_HAS_O_CLOEXEC, 1,
1751 [Define if O_CLOEXEC supported by fcntl.])
1754 # Check if O_NONBLOCK is defined by fcntl
1755 AC_CHECK_HEADERS([fcntl.h])
1756 AC_CHECK_DECL(O_NONBLOCK,,,[#include <fcntl.h>])
1757 if test $ac_cv_have_decl_O_NONBLOCK = yes; then
1758 AC_DEFINE(HOST_HAS_O_NONBLOCK, 1,
1759 [Define if O_NONBLOCK supported by fcntl.])
1763 # C++ Modules would like some networking features to provide the mapping
1764 # server. You can still use modules without them though.
1765 # The following network-related checks could probably do with some
1766 # Windows and other non-linux defenses and checking.
1768 # Local socket connectivity wants AF_UNIX networking
1769 # Check for AF_UNIX networking
1770 AC_CACHE_CHECK(for AF_UNIX, ac_cv_af_unix, [
1771 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1772 #include <sys/types.h>
1773 #include <sys/socket.h>
1775 #include <netinet/in.h>]],[[
1777 un.sun_family = AF_UNSPEC;
1778 int fd = socket (AF_UNIX, SOCK_STREAM, 0);
1779 connect (fd, (sockaddr *)&un, sizeof (un));]])],
1780 [ac_cv_af_unix=yes],
1781 [ac_cv_af_unix=no])])
1782 if test $ac_cv_af_unix = yes; then
1783 AC_DEFINE(HAVE_AF_UNIX, 1,
1784 [Define if AF_UNIX supported.])
1787 # Remote socket connectivity wants AF_INET6 networking
1788 # Check for AF_INET6 networking
1789 AC_CACHE_CHECK(for AF_INET6, ac_cv_af_inet6, [
1790 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1791 #include <sys/types.h>
1792 #include <sys/socket.h>
1793 #include <netinet/in.h>
1794 #include <netdb.h>]],[[
1796 in6.sin6_family = AF_UNSPEC;
1797 struct addrinfo *addrs = 0;
1798 struct addrinfo hints;
1800 hints.ai_family = AF_INET6;
1801 hints.ai_socktype = SOCK_STREAM;
1802 hints.ai_protocol = 0;
1803 hints.ai_canonname = 0;
1806 int e = getaddrinfo ("localhost", 0, &hints, &addrs);
1807 const char *str = gai_strerror (e);
1808 freeaddrinfo (addrs);
1809 int fd = socket (AF_INET6, SOCK_STREAM, 0);
1810 connect (fd, (sockaddr *)&in6, sizeof (in6));]])],
1811 [ac_cv_af_inet6=yes],
1812 [ac_cv_af_inet6=no])])
1813 if test $ac_cv_af_inet6 = yes; then
1814 AC_DEFINE(HAVE_AF_INET6, 1,
1815 [Define if AF_INET6 supported.])
1818 # Check if _LK_LOCK is supported by _locking
1819 AC_CACHE_CHECK(for _LK_LOCK, ac_cv_lk_lock, [
1820 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1822 #include <sys/locking.h>]], [[
1824 return _locking (fd, _LK_LOCK, 0);]])],
1825 [ac_cv_lk_lock=yes],[ac_cv_lk_lock=no])])
1826 if test $ac_cv_lk_lock = yes; then
1827 AC_DEFINE(HOST_HAS_LK_LOCK, 1,
1828 [Define if _LK_LOC supported by _locking.])
1831 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1832 CFLAGS="$saved_CFLAGS"
1833 CXXFLAGS="$saved_CXXFLAGS"
1835 # mkdir takes a single argument on some systems.
1836 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1844 # With Setjmp/Longjmp based exception handling.
1845 AC_ARG_ENABLE(sjlj-exceptions,
1846 [AS_HELP_STRING([--enable-sjlj-exceptions],
1847 [arrange to use setjmp/longjmp exception handling])],
1848 [force_sjlj_exceptions=yes],
1851 force_sjlj_exceptions=yes
1855 force_sjlj_exceptions=no
1858 if test $force_sjlj_exceptions = yes; then
1859 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1860 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1861 [Define 0/1 to force the choice for exception handling model.])
1864 # --------------------------------------------------------
1865 # Build, host, and target specific configuration fragments
1866 # --------------------------------------------------------
1868 # Collect build-machine-specific information.
1869 . ${srcdir}/config.build || exit 1
1871 # Collect host-machine-specific information.
1872 . ${srcdir}/config.host || exit 1
1876 # Collect target-machine-specific information.
1877 . ${srcdir}/config.gcc || exit 1
1879 extra_objs="${host_extra_objs} ${extra_objs}"
1880 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1882 # Default the target-machine variables that were not explicitly set.
1883 if test x"$tm_file" = x
1884 then tm_file=$cpu_type/$cpu_type.h; fi
1886 if test x"$extra_headers" = x
1887 then extra_headers=; fi
1889 if test x$md_file = x
1890 then md_file=$cpu_type/$cpu_type.md; fi
1892 if test x$out_file = x
1893 then out_file=$cpu_type/$cpu_type.cc; fi
1895 if test x"$tmake_file" = x
1896 then tmake_file=$cpu_type/t-$cpu_type
1899 # Support --enable-initfini-array.
1900 if test x$enable_initfini_array != xno; then
1901 tm_file="${tm_file} initfini-array.h"
1904 if test x"$dwarf2" = xyes
1905 then tm_file="$tm_file tm-dwarf2.h"
1908 # Say what files are being used for the output code and MD file.
1909 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1910 echo "Using \`$srcdir/config/$md_file' as machine description file."
1912 # If any of the xm_file variables contain nonexistent files, warn
1913 # about them and drop them.
1916 for x in $build_xm_file; do
1917 if test -f $srcdir/config/$x
1919 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1925 for x in $host_xm_file; do
1926 if test -f $srcdir/config/$x
1928 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1934 for x in $xm_file; do
1935 if test -f $srcdir/config/$x
1937 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1943 for f in $tm_file; do
1946 if test $count = ax; then
1947 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1949 echo "Using the following target machine macro files:"
1950 for f in $tm_file; do
1951 echo " $srcdir/config/$f"
1955 if test x$use_long_long_for_widest_fast_int = xyes; then
1956 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1957 [Define to 1 if the 'long long' type is wider than 'long' but still
1958 efficiently supported by the host hardware.])
1961 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1962 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1964 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1965 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1968 for f in $host_xm_file; do
1971 if test $count = a; then
1973 elif test $count = ax; then
1974 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1976 echo "Using the following host machine macro files:"
1977 for f in $host_xm_file; do
1978 echo " $srcdir/config/$f"
1981 echo "Using ${out_host_hook_obj} for host machine hooks."
1983 if test "$host_xm_file" != "$build_xm_file"; then
1985 for f in $build_xm_file; do
1988 if test $count = a; then
1990 elif test $count = ax; then
1991 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1993 echo "Using the following build machine macro files:"
1994 for f in $build_xm_file; do
1995 echo " $srcdir/config/$f"
2000 if test -n "$configured_native_system_header_dir"; then
2001 native_system_header_dir=$configured_native_system_header_dir
2003 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
2004 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
2008 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
2009 gcc_cv_mcontext_underscores,
2010 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
2011 #include <sys/cdefs.h>
2012 #include <sys/signal.h>
2013 #include <ucontext.h>
2014 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
2016 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
2017 if test $gcc_cv_mcontext_underscores = yes; then
2018 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
2019 [mcontext_t fields start with __])
2028 # Check if a valid thread package
2029 case ${enable_threads} in
2032 target_thread_file='single'
2036 target_thread_file='single'
2038 aix | dce | lynx | mipssde | posix | rtems | \
2039 single | tpf | vxworks | win32 | mcf)
2040 target_thread_file=${enable_threads}
2043 echo "${enable_threads} is an unknown thread package" 1>&2
2048 if test x${thread_file} = x; then
2049 # No thread file set by target-specific clauses in config.gcc,
2050 # so use file chosen by default logic above
2051 thread_file=${target_thread_file}
2059 if test x$enable___cxa_atexit = xyes || \
2060 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
2061 if test x$host = x$target; then
2063 # mingw32 doesn't have __cxa_atexit but uses atexit registration
2064 # keyed to flag_use_cxa_atexit
2072 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
2073 [echo "__cxa_atexit can't be enabled on this target"])
2077 # We can't check for __cxa_atexit when building a cross, so assume
2081 if test x$use_cxa_atexit = xyes; then
2082 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
2083 [Define if you want to use __cxa_atexit, rather than atexit, to
2084 register C++ destructors for local statics and global objects.
2085 This is essential for fully standards-compliant handling of
2086 destructors, but requires __cxa_atexit in libc.])
2090 # Look for a file containing extra machine modes.
2091 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
2092 extra_modes_file='$(srcdir)'/config/${extra_modes}
2093 AC_SUBST(extra_modes_file)
2094 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
2095 [Define to the name of a file containing a list of extra machine modes
2096 for this architecture.])
2099 # Convert extra_options into a form suitable for Makefile use.
2102 for f in $extra_options; do
2103 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
2104 all_opt_files="$all_opt_files $srcdir/config/$f"
2106 AC_SUBST(extra_opt_files)
2108 # auto-host.h is the file containing items generated by autoconf and is
2109 # the first file included by config.h.
2110 # If host=build, it is correct to have bconfig include auto-host.h
2111 # as well. If host!=build, we are in error and need to do more
2112 # work to find out the build config parameters.
2113 if test x$host = x$build
2115 build_auto=auto-host.h
2116 HAVE_AUTO_BUILD='# '
2118 # We create a subdir, then run autoconf in the subdir.
2119 # To prevent recursion we set host and build for the new
2120 # invocation of configure to the build for this invocation
2127 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
2128 *) realsrcdir=../${srcdir};;
2130 # Clearing GMPINC is necessary to prevent host headers being
2131 # used by the build compiler. Defining GENERATOR_FILE stops
2132 # system.h from including gmp.h.
2133 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
2134 CXX="${CXX_FOR_BUILD}" CXXFLAGS="${CXXFLAGS_FOR_BUILD}" \
2135 LD="${LD_FOR_BUILD}" LDFLAGS="${LDFLAGS_FOR_BUILD}" \
2136 GMPINC="" CPPFLAGS="${CPPFLAGS_FOR_BUILD} -DGENERATOR_FILE" \
2137 ${realsrcdir}/configure \
2138 --enable-languages=${enable_languages-all} \
2139 ${enable_obsolete+--enable-obsolete="$enable_obsolete"} \
2140 ${enable_option_checking+--enable-option-checking="$enable_option_checking"} \
2141 --target=$target_alias --host=$build_alias \
2142 --build=$build_alias || exit # retaining $tempdir
2144 # We just finished tests for the build machine, so rename
2145 # the file auto-build.h in the gcc directory.
2146 mv auto-host.h ../auto-build.h
2149 build_auto=auto-build.h
2152 AC_SUBST(build_subdir)
2153 AC_SUBST(HAVE_AUTO_BUILD)
2155 tm_file="${tm_file} defaults.h"
2156 tm_p_file="${tm_p_file} tm-preds.h"
2157 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
2158 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
2159 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
2160 # put this back in temporarily.
2161 xm_file="auto-host.h ansidecl.h ${xm_file}"
2168 # Compile in configure arguments.
2169 if test -f configargs.h ; then
2170 # Being re-configured.
2171 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
2172 gcc_reconf_arguments=`echo "$gcc_config_arguments" | sed -e 's/^.*\( : (reconfigured) .*$\)/\1/'`
2173 if [ "$gcc_reconf_arguments" != " : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS" ]; then
2174 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
2177 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
2180 # Double all backslashes and backslash all quotes to turn
2181 # gcc_config_arguments into a C string.
2182 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
2183 $gcc_config_arguments
2185 gcc_config_arguments_str=`cat conftest.out`
2188 cat > configargs.h <<EOF
2189 /* Generated automatically. */
2190 static const char configuration_arguments[] = "$gcc_config_arguments_str";
2191 static const char thread_model[] = "$thread_file";
2193 static const struct {
2194 const char *name, *value;
2195 } configure_default_options[] = $configure_default_options;
2200 gcc_BASEVER=`cat $srcdir/BASE-VER`
2201 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
2202 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
2203 if test -f $srcdir/REVISION ; then
2204 gcc_REVISION=`cat $srcdir/REVISION`
2208 cat > plugin-version.h <<EOF
2209 #include "configargs.h"
2211 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
2212 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
2213 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
2214 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
2216 static char basever[] = "$gcc_BASEVER";
2217 static char datestamp[] = "$gcc_DATESTAMP";
2218 static char devphase[] = "$gcc_DEVPHASE";
2219 static char revision[] = "$gcc_REVISION";
2221 /* FIXME plugins: We should make the version information more precise.
2222 One way to do is to add a checksum. */
2224 static struct plugin_gcc_version gcc_version = {basever, datestamp,
2226 configuration_arguments};
2230 # Determine what GCC version number to use in filesystem paths.
2233 # Internationalization
2234 ZW_GNU_GETTEXT_SISTER_DIR
2236 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
2237 # -liconv on the link line twice.
2238 case "$LIBINTL" in *$LIBICONV*)
2242 AC_ARG_ENABLE(secureplt,
2243 [AS_HELP_STRING([--enable-secureplt],
2244 [enable -msecure-plt by default for PowerPC])],
2247 AC_ARG_ENABLE(mingw-wildcard,
2248 [AS_HELP_STRING([--enable-mingw-wildcard],
2249 [Set whether to expand wildcard on command-line.
2250 Default to platform configuration])],
2251 [],[enable_mingw_wildcard=platform])
2252 AS_IF([test x"$enable_mingw_wildcard" != xplatform ],
2253 [AC_DEFINE_UNQUOTED(MINGW_DOWILDCARD,
2254 $(test x"$enable_mingw_wildcard" = xno; echo $?),
2255 [Value to set mingw's _dowildcard to.])])
2257 AC_ARG_ENABLE(large-address-aware,
2258 [AS_HELP_STRING([--enable-large-address-aware],
2259 [Link mingw executables with --large-address-aware])])
2260 AS_IF([test x"$enable_large_address_aware" = xyes],
2261 [AC_DEFINE([MINGW_DEFAULT_LARGE_ADDR_AWARE], 1,
2262 [Define if we should link mingw executables with --large-address-aware])])
2264 AC_ARG_ENABLE(leading-mingw64-underscores,
2265 AS_HELP_STRING([--enable-leading-mingw64-underscores],
2266 [enable leading underscores on 64 bit mingw targets]),
2268 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
2269 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
2270 [Define if we should use leading underscore on 64 bit mingw targets])])
2273 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
2276 AC_ARG_ENABLE(frame-pointer,
2277 [AS_HELP_STRING([--enable-frame-pointer],
2278 [enable -fno-omit-frame-pointer by default for x86])], [],
2281 linux* | gnu* | darwin[[8912]]* | cygwin* | mingw*)
2282 # Enable -fomit-frame-pointer by default for these systems with DWARF2.
2283 enable_frame_pointer=no
2286 enable_frame_pointer=yes
2292 i[[34567]]86-*-* | x86_64-*-*)
2293 if test "x$enable_cld" = xyes; then
2294 tm_defines="${tm_defines} USE_IX86_CLD=1"
2296 if test "x$enable_frame_pointer" = xyes; then
2297 tm_defines="${tm_defines} USE_IX86_FRAME_POINTER=1"
2302 # Windows32 Registry support for specifying GCC installation paths.
2303 AC_ARG_ENABLE(win32-registry,
2304 [AS_HELP_STRING([--disable-win32-registry],
2305 [disable lookup of installation paths in the
2306 Registry on Windows hosts])
2307 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
2308 AS_HELP_STRING([--enable-win32-registry=KEY],
2309 [use KEY instead of GCC version as the last portion
2310 of the registry key])],,)
2313 win32 | pe | cygwin* | mingw32*)
2314 if test "x$enable_win32_registry" != xno; then
2315 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
2318 if test "x$enable_win32_registry" != xno; then
2319 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
2320 [Define to 1 if installation paths should be looked up in the Windows
2321 Registry. Ignored on non-Windows hosts.])
2323 if test "x$enable_win32_registry" != xyes \
2324 && test "x$enable_win32_registry" != x; then
2325 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
2326 [Define to be the last component of the Windows registry key under which
2327 to look for installation paths. The full key used will be
2328 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
2329 The default is the GCC version number.])
2335 # Get an absolute path to the GCC top-level source directory
2336 holddir=`${PWDCMD-pwd}`
2338 topdir=`${PWDCMD-pwd}`
2341 # Conditionalize the makefile for this host machine.
2343 for f in ${host_xmake_file}
2345 if test -f ${srcdir}/config/$f
2347 xmake_file="${xmake_file} \$(srcdir)/config/$f"
2351 # Conditionalize the makefile for this target machine.
2353 for f in ${tmake_file}
2355 if test -f ${srcdir}/config/$f
2357 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
2360 tmake_file="${tmake_file_}${omp_device_property_tmake_file}"
2362 out_object_file=`basename $out_file .cc`.o
2363 common_out_object_file=`basename $common_out_file .cc`.o
2365 tm_file_list="options.h"
2366 tm_include_list="options.h insn-constants.h"
2367 for f in $tm_file; do
2370 f=`echo $f | sed 's/^..//'`
2371 tm_file_list="${tm_file_list} $f"
2372 tm_include_list="${tm_include_list} $f"
2375 tm_file_list="${tm_file_list} \$(srcdir)/$f"
2376 tm_include_list="${tm_include_list} $f"
2379 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
2380 tm_include_list="${tm_include_list} config/$f"
2387 for f in $tm_p_file; do
2390 tm_p_file_list="${tm_p_file_list} $f"
2391 tm_p_include_list="${tm_p_include_list} $f"
2394 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
2395 tm_p_include_list="${tm_p_include_list} config/$f"
2401 for f in $tm_d_file; do
2404 tm_d_file_list="${tm_d_file_list} \$(srcdir)/config/$f"
2405 tm_d_include_list="${tm_d_include_list} config/$f"
2412 for f in $xm_file; do
2415 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
2416 xm_include_list="${xm_include_list} $f"
2419 xm_file_list="${xm_file_list} $f"
2420 xm_include_list="${xm_include_list} $f"
2423 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
2424 xm_include_list="${xm_include_list} config/$f"
2430 host_xm_include_list=
2431 for f in $host_xm_file; do
2434 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
2435 host_xm_include_list="${host_xm_include_list} $f"
2438 host_xm_file_list="${host_xm_file_list} $f"
2439 host_xm_include_list="${host_xm_include_list} $f"
2442 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
2443 host_xm_include_list="${host_xm_include_list} config/$f"
2449 for f in $build_xm_file; do
2452 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
2453 build_xm_include_list="${build_xm_include_list} $f"
2455 auto-build.h | auto-host.h )
2456 build_xm_file_list="${build_xm_file_list} $f"
2457 build_xm_include_list="${build_xm_include_list} $f"
2460 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
2461 build_xm_include_list="${build_xm_include_list} config/$f"
2466 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
2467 # cross-compiler which does not use the native headers and libraries.
2468 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
2469 CROSS= AC_SUBST(CROSS)
2470 ALL=all.internal AC_SUBST(ALL)
2471 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
2472 BUILD_SYSTEM_HEADER_DIR=$SYSTEM_HEADER_DIR AC_SUBST(BUILD_SYSTEM_HEADER_DIR)
2474 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x ||
2475 test x$build != x$host || test "x$with_build_sysroot" != x; then
2476 if test "x$with_build_sysroot" != x; then
2477 BUILD_SYSTEM_HEADER_DIR=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
2479 BUILD_SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2482 if test x$host != x$target
2484 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
2486 SYSTEM_HEADER_DIR=$BUILD_SYSTEM_HEADER_DIR
2487 elif test "x$TARGET_SYSTEM_ROOT" != x; then
2488 SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2491 if test "x$with_build_sysroot" != "x"; then
2492 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
2493 elif test "x$with_sysroot" = x; then
2494 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
2495 elif test "x$with_sysroot" = xyes; then
2496 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
2498 target_header_dir="${with_sysroot}${native_system_header_dir}"
2501 target_header_dir=${native_system_header_dir}
2504 # If this is a cross-compiler that does not
2505 # have its own set of headers then define
2508 # If this is using newlib, without having the headers available now,
2509 # then define inhibit_libc in LIBGCC2_CFLAGS.
2510 # This prevents libgcc2 from containing any code which requires libc
2512 : ${inhibit_libc=false}
2513 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
2514 test x$with_newlib = xyes ; } &&
2515 { test "x$with_headers" = xno || test ! -f "$target_header_dir/stdio.h"; } ; then
2518 AC_SUBST(inhibit_libc)
2520 # When building gcc with a cross-compiler, we need to adjust things so
2521 # that the generator programs are still built with the native compiler.
2522 # Also, we cannot run fixincludes.
2524 # These are the normal (build=host) settings:
2525 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
2526 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
2527 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
2528 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
2529 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
2530 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
2532 # And these apply if build != host, or we are generating coverage data
2533 if test x$build != x$host || test "x$coverage_flags" != x
2535 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS-$@) $(CFLAGS_FOR_BUILD)'
2536 BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS-$@) $(CXXFLAGS_FOR_BUILD)'
2537 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
2541 if test x$enable_fixincludes = xno;
2546 # Expand extra_headers to include complete path.
2547 # This substitutes for lots of t-* files.
2549 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
2550 for file in ${extra_headers} ; do
2551 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
2554 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
2555 if test x"$use_gcc_tgmath" = xyes
2556 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
2559 # Define collect2 in Makefile.
2560 case $host_can_use_collect2 in
2562 *) collect2='collect2$(exeext)' ;;
2564 AC_SUBST([collect2])
2566 # Add a definition of USE_COLLECT2 if system wants one.
2567 case $use_collect2 in
2568 no) use_collect2= ;;
2571 host_xm_defines="${host_xm_defines} USE_COLLECT2"
2572 xm_defines="${xm_defines} USE_COLLECT2"
2573 case $host_can_use_collect2 in
2575 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
2581 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
2582 [Define to the name of the LTO plugin DSO that must be
2583 passed to the linker's -plugin=LIB option.])
2585 # ---------------------------
2586 # Assembler & linker features
2587 # ---------------------------
2589 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
2590 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
2591 # However when ld-new is first executed from the build tree, libtool will
2592 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
2593 # to the build tree. While doing this we need to use the previous-stage
2594 # linker, or we have an infinite loop. The presence of a shell script as
2595 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
2596 # the gcc/collect-ld script. So we need to know how libtool works, or
2597 # exec-tool will fail.
2599 m4_defun([_LT_CONFIG_COMMANDS], [])
2602 AC_SUBST(enable_fast_install)
2604 # Identify the assembler which will work hand-in-glove with the newly
2605 # built GCC, so that we can examine its features. This is the assembler
2606 # which will be driven by the driver program.
2608 # If build != host, and we aren't building gas in-tree, we identify a
2609 # build->target assembler and hope that it will have the same features
2610 # as the host->target assembler we'll be using.
2611 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
2613 m4_pattern_allow([AS_FOR_TARGET])dnl
2614 AS_VAR_SET_IF(gcc_cv_as,, [
2615 if test -x "$DEFAULT_ASSEMBLER"; then
2616 gcc_cv_as="$DEFAULT_ASSEMBLER"
2617 elif test -f $gcc_cv_as_gas_srcdir/configure.ac \
2618 && test -f ../gas/Makefile \
2619 && test x$build = x$host; then
2620 gcc_cv_as=../gas/as-new$build_exeext
2621 elif test -x as$build_exeext; then
2622 # Build using assembler in the current directory.
2623 gcc_cv_as=./as$build_exeext
2624 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
2625 gcc_cv_as="$AS_FOR_TARGET"
2627 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
2630 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
2631 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
2632 case "$ORIGINAL_AS_FOR_TARGET" in
2633 ./as | ./as$build_exeext) ;;
2634 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2639 [[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]],
2640 [case "${enableval}" in
2646 install_gold_as_default=no
2648 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
2649 [case "${enableval}" in
2651 install_gold_as_default=yes
2654 if test x${default_ld} != x; then
2655 install_gold_as_default=yes
2661 AC_MSG_ERROR([invalid --enable-gold argument])
2665 # Identify the linker which will work hand-in-glove with the newly
2666 # built GCC, so that we can examine its features. This is the linker
2667 # which will be driven by the driver program.
2669 # If build != host, and we aren't building gas in-tree, we identify a
2670 # build->target linker and hope that it will have the same features
2671 # as the host->target linker we'll be using.
2672 gcc_cv_gld_major_version=
2673 gcc_cv_gld_minor_version=
2674 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2675 gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold
2676 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2678 AS_VAR_SET_IF(gcc_cv_ld,, [
2679 if test -x "$DEFAULT_LINKER"; then
2680 gcc_cv_ld="$DEFAULT_LINKER"
2681 elif test $install_gold_as_default = yes \
2682 && test -f $gcc_cv_ld_gold_srcdir/configure.ac \
2683 && test -f ../gold/Makefile \
2684 && test x$build = x$host; then
2685 gcc_cv_ld=../gold/ld-new$build_exeext
2686 elif test -f $gcc_cv_ld_gld_srcdir/configure.ac \
2687 && test -f ../ld/Makefile \
2688 && test x$build = x$host; then
2689 gcc_cv_ld=../ld/ld-new$build_exeext
2690 elif test -x collect-ld$build_exeext; then
2691 # Build using linker in the current directory.
2692 gcc_cv_ld=./collect-ld$build_exeext
2693 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2694 gcc_cv_ld="$LD_FOR_TARGET"
2696 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2699 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2700 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2701 # if the PLUGIN_LD is set ld-new, just have it as ld
2702 # as that is the installed named.
2703 if test x$PLUGIN_LD_SUFFIX = xld-new \
2704 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2707 AC_ARG_WITH(plugin-ld,
2708 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2709 [if test x"$withval" != x; then
2710 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2711 PLUGIN_LD_SUFFIX="$withval"
2713 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2714 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2716 # Check to see if we are using gold instead of ld
2717 AC_MSG_CHECKING(whether we are using gold)
2719 if test x$gcc_cv_ld != x; then
2720 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2721 | grep "GNU gold" > /dev/null; then
2725 AC_MSG_RESULT($ld_is_gold)
2727 # Check to see if we are using mold instead of ld
2728 AC_MSG_CHECKING(whether we are using mold)
2730 if test x$gcc_cv_ld != x; then
2731 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2732 | grep "mold" > /dev/null; then
2736 AC_MSG_RESULT($ld_is_mold)
2739 AC_MSG_CHECKING(gold linker with split stack support as non default)
2740 # Check to see if default ld is not gold, but gold is
2741 # available and has support for split stack. If gcc was configured
2742 # with gold then no checking is done.
2744 if test x$ld_is_gold = xno && which ${gcc_cv_ld}.gold >/dev/null 2>&1; then
2746 # For platforms other than powerpc64*, enable as appropriate.
2749 ld_gold=`which ${gcc_cv_ld}.gold`
2750 # Make sure this gold has minimal split stack support
2751 if $ld_gold --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then
2752 ld_vers=`$ld_gold --version | sed 1q`
2753 gold_vers=`echo $ld_vers | sed -n \
2754 -e 's,^[[^)]]*[[ ]]\([[0-9]][[0-9]]*\.[[0-9]][[0-9]]*[[^)]]*\)) .*$,\1,p'`
2756 # check that the gold version contains the complete split stack support
2757 # on powerpc64 big and little endian
2759 case "$gold_vers" in
2760 2.25.[[1-9]]*|2.2[[6-9]][[.0-9]]*|2.[[3-9]][[.0-9]]*|[[3-9]].[[.0-9]]*) gold_non_default=yes
2762 *) gold_non_default=no
2768 if test $gold_non_default = yes; then
2769 AC_DEFINE(HAVE_GOLD_NON_DEFAULT_SPLIT_STACK, 1,
2770 [Define if the gold linker supports split stack and is available as a non-default])
2773 AC_MSG_RESULT($gold_non_default)
2775 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2776 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2777 case "$ORIGINAL_LD_FOR_TARGET" in
2778 ./collect-ld | ./collect-ld$build_exeext) ;;
2779 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2782 AC_MSG_CHECKING(what linker to use)
2783 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2784 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2785 # Single tree build which includes ld. We want to prefer it
2786 # over whatever linker top-level may have detected, since
2787 # we'll use what we're building after installation anyway.
2788 AC_MSG_RESULT(newly built ld)
2790 in_tree_ld_is_elf=no
2791 if (grep 'EMUL = .*elf' ../ld/Makefile \
2792 || grep 'EMUL = .*linux' ../ld/Makefile \
2793 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2794 in_tree_ld_is_elf=yes
2795 elif test "$ld_is_gold" = yes; then
2796 in_tree_ld_is_elf=yes
2798 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
2801 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2802 if test x$gcc_cv_gld_version != x; then
2806 case $gcc_cv_gld_version in
2809 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2812 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2813 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2815 ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext
2816 ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext
2818 AC_MSG_RESULT($gcc_cv_ld)
2820 gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext`
2821 ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext
2822 ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext
2825 AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET)
2826 AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET)
2828 # Figure out what nm we will be using.
2829 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2830 AS_VAR_SET_IF(gcc_cv_nm,, [
2831 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2832 && test -f ../binutils/Makefile \
2833 && test x$build = x$host; then
2834 gcc_cv_nm=../binutils/nm-new$build_exeext
2835 elif test -x nm$build_exeext; then
2836 gcc_cv_nm=./nm$build_exeext
2837 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2838 gcc_cv_nm="$NM_FOR_TARGET"
2840 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2843 AC_MSG_CHECKING(what nm to use)
2844 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2845 # Single tree build which includes binutils.
2846 AC_MSG_RESULT(newly built nm)
2849 AC_MSG_RESULT($gcc_cv_nm)
2853 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2854 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2855 case "$ORIGINAL_NM_FOR_TARGET" in
2856 ./nm | ./nm$build_exeext) ;;
2857 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2861 # Figure out what objdump we will be using.
2862 AS_VAR_SET_IF(gcc_cv_objdump,, [
2863 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2864 && test -f ../binutils/Makefile \
2865 && test x$build = x$host; then
2866 # Single tree build which includes binutils.
2867 gcc_cv_objdump=../binutils/objdump$build_exeext
2868 elif test -x objdump$build_exeext; then
2869 gcc_cv_objdump=./objdump$build_exeext
2870 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2871 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2873 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2876 AC_MSG_CHECKING(what objdump to use)
2877 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2878 # Single tree build which includes binutils.
2879 AC_MSG_RESULT(newly built objdump)
2880 elif test x$gcc_cv_objdump = x; then
2881 AC_MSG_RESULT(not found)
2883 AC_MSG_RESULT($gcc_cv_objdump)
2886 # Figure out what readelf we will be using.
2887 AS_VAR_SET_IF(gcc_cv_readelf,, [
2888 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2889 && test -f ../binutils/Makefile \
2890 && test x$build = x$host; then
2891 # Single tree build which includes binutils.
2892 gcc_cv_readelf=../binutils/readelf$build_exeext
2893 elif test -x readelf$build_exeext; then
2894 gcc_cv_readelf=./readelf$build_exeext
2895 elif ( set dummy $READELF_FOR_TARGET; test -x $[2] ); then
2896 gcc_cv_readelf="$READELF_FOR_TARGET"
2898 AC_PATH_PROG(gcc_cv_readelf, $READELF_FOR_TARGET)
2901 AC_MSG_CHECKING(what readelf to use)
2902 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2903 # Single tree build which includes binutils.
2904 AC_MSG_RESULT(newly built readelf)
2905 elif test x$gcc_cv_readelf = x; then
2906 AC_MSG_RESULT(not found)
2908 AC_MSG_RESULT($gcc_cv_readelf)
2911 # Figure out what otool we will be using.
2912 AS_VAR_SET_IF(gcc_cv_otool,, [
2913 if test -x otool$build_exeext; then
2914 gcc_cv_otool=./otool$build_exeext
2915 elif ( set dummy $OTOOL_FOR_TARGET; test -x $[2] ); then
2916 gcc_cv_otool="$OTOOL_FOR_TARGET"
2918 AC_PATH_PROG(gcc_cv_otool, $OTOOL_FOR_TARGET)
2921 AC_MSG_CHECKING(what otool to use)
2922 if test x$gcc_cv_otool = x; then
2923 AC_MSG_RESULT(not found)
2925 AC_MSG_RESULT($gcc_cv_otool)
2928 # Figure out the dsymutil we will use.
2929 AS_VAR_SET_IF(gcc_cv_dsymutil,, [
2930 if test -x "$DEFAULT_DSYMUTIL"; then
2931 gcc_cv_dsymutil="$DEFAULT_DSYMUTIL"
2932 elif test -x dsymutil$build_exeext; then
2933 gcc_cv_dsymutil=./dsymutil$build_exeext
2934 elif ( set dummy $DSYMUTIL_FOR_TARGET; test -x $[2] ); then
2935 gcc_cv_dsymutil=$DSYMUTIL_FOR_TARGET
2936 elif ( set dummy $DSYMUTIL; test -x $[2] ); then
2937 gcc_cv_dsymutil=$DSYMUTIL
2939 AC_PATH_PROG(gcc_cv_dsymutil, $DSYMUTIL_FOR_TARGET)
2942 ORIGINAL_DSYMUTIL_FOR_TARGET=$gcc_cv_dsymutil
2943 AC_SUBST(ORIGINAL_DSYMUTIL_FOR_TARGET)
2944 case "$ORIGINAL_DSYMUTIL_FOR_TARGET" in
2945 ./dsymutil | ./dsymutil$build_exeext) ;;
2946 *) AC_CONFIG_FILES(dsymutil:exec-tool.in, [chmod +x dsymutil]) ;;
2949 # Figure out what assembler alignment features are present.
2950 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,,
2953 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2954 [Define if your assembler supports .balign and .p2align.])])
2956 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,,
2958 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2959 [Define if your assembler supports specifying the maximum number
2960 of bytes to skip when using the GAS .p2align command.])])
2962 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,,
2964 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2965 [Define if your assembler supports .literal16.])])
2967 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,,
2968 [conftest_label1: .word 0
2970 conftest_label2: .word 0
2972 [if test x$gcc_cv_nm != x; then
2973 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2974 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2975 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2977 else gcc_cv_as_subsection_m1=yes
2979 rm -f conftest.nm1 conftest.nm2
2981 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2982 [Define if your assembler supports .subsection and .subsection -1 starts
2983 emitting at the beginning of your section.])])
2985 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,,
2987 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2989 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,,
2990 [ .weakref foobar, barfnot],,
2991 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2993 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,,
2995 .NSUBSPA $CODE$,COMDAT],,
2996 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2998 # .hidden needs to be supported in both the assembler and the linker,
2999 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
3000 # This is irritatingly difficult to feature test for; we have to check the
3001 # date string after the version number. If we've got an in-tree
3002 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
3004 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
3007 conftest_s=' .globl foobar,hidden'
3010 conftest_s=' .hidden foobar
3014 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,, [$conftest_s])
3017 # Darwin as has some visibility support, though with a different syntax.
3018 gcc_cv_as_hidden=yes
3022 # gnu_indirect_function type is an extension proposed at
3023 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
3024 # selection of function implementation
3025 AC_ARG_ENABLE(gnu-indirect-function,
3026 [AS_HELP_STRING([--enable-gnu-indirect-function],
3027 [enable the use of the @gnu_indirect_function to glibc systems])],
3028 [case $enable_gnu_indirect_function in
3030 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
3031 Valid choices are 'yes' and 'no'.]) ;;
3033 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
3037 AC_MSG_CHECKING(linker ifunc IRELATIVE support)
3038 cat > conftest.s <<EOF
3040 .type foo_resolver, @function
3043 .size foo_resolver, .-foo_resolver
3046 .type foo, %gnu_indirect_function
3047 .set foo, foo_resolver
3050 .type bar, @function
3056 if test x$gcc_cv_as != x \
3057 && test x$gcc_cv_ld != x \
3058 && test x$gcc_cv_readelf != x \
3059 && $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
3060 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1 \
3061 && $gcc_cv_readelf --relocs --wide conftest \
3062 | grep R_RISCV_IRELATIVE > /dev/null 2>&1; then
3063 enable_gnu_indirect_function=yes
3065 rm -f conftest conftest.o conftest.s
3066 AC_MSG_RESULT($enable_gnu_indirect_function)
3070 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
3071 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
3072 [Define if your system supports gnu indirect functions.])
3076 if test $in_tree_ld != yes ; then
3077 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
3078 if echo "$ld_ver" | grep GNU > /dev/null; then
3079 if test x"$ld_is_gold" = xyes; then
3080 # GNU gold --version looks like this:
3082 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
3084 # We extract the binutils version which is more familiar and specific
3085 # than the gold version.
3086 ld_vers=`echo $ld_ver | sed -n \
3087 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3089 # GNU ld --version looks like this:
3091 # GNU ld (GNU Binutils) 2.21.51.20110225
3092 ld_vers=`echo $ld_ver | sed -n \
3093 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3095 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)\(-*\)\([01][0-9]\)\2\([0-3][0-9]\).*$,\1\3\4,p'`
3096 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3097 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3098 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
3102 # Solaris 2 ld -V output looks like this for a regular version:
3104 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
3106 # but test versions add stuff at the end:
3108 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
3110 # ld and ld.so.1 are guaranteed to be updated in lockstep, so ld version
3111 # numbers can be used in ld.so.1 feature checks even if a different
3112 # linker is configured.
3113 ld_ver=`$gcc_cv_ld -V 2>&1`
3114 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
3115 ld_vers=`echo $ld_ver | sed -n \
3116 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
3117 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3118 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3126 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
3127 [[if test $in_tree_ld = yes ; then
3129 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
3130 && test $in_tree_ld_is_elf = yes; then
3131 gcc_cv_ld_hidden=yes
3134 gcc_cv_ld_hidden=yes
3135 if test x"$ld_is_gold" = xyes; then
3137 elif test x"$ld_is_mold" = xyes; then
3139 elif echo "$ld_ver" | grep GNU > /dev/null; then
3140 if test 0"$ld_date" -lt 20020404; then
3141 if test -n "$ld_date"; then
3142 # If there was date string, but was earlier than 2002-04-04, fail
3144 elif test -z "$ld_vers"; then
3145 # If there was no date string nor ld version number, something is wrong
3148 test -z "$ld_vers_patch" && ld_vers_patch=0
3149 if test "$ld_vers_major" -lt 2; then
3151 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
3152 gcc_cv_ld_hidden="no"
3153 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
3161 gcc_cv_ld_hidden=yes
3164 # Darwin ld has some visibility support.
3165 gcc_cv_ld_hidden=yes
3167 hppa64*-*-hpux* | ia64*-*-hpux*)
3168 gcc_cv_ld_hidden=yes
3171 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
3172 # .symbolic was only added in Solaris 9 12/02.
3173 gcc_cv_ld_hidden=yes
3181 libgcc_visibility=no
3182 AC_SUBST(libgcc_visibility)
3183 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
3184 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
3185 libgcc_visibility=yes
3186 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
3187 [Define if your assembler and linker support .hidden.])
3190 AC_MSG_CHECKING(linker read-only and read-write section mixing)
3191 gcc_cv_ld_ro_rw_mix=unknown
3192 if test $in_tree_ld = yes ; then
3193 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
3194 && test $in_tree_ld_is_elf = yes; then
3195 gcc_cv_ld_ro_rw_mix=read-write
3197 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3198 echo '.section myfoosect, "a"' > conftest1.s
3199 echo '.section myfoosect, "aw"' > conftest2.s
3200 echo '.byte 1' >> conftest2.s
3201 echo '.section myfoosect, "a"' > conftest3.s
3202 echo '.byte 0' >> conftest3.s
3203 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
3204 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
3205 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1; then
3206 if $gcc_cv_ld -shared -o conftest1.so conftest1.o \
3207 conftest2.o conftest3.o > /dev/null 2>&1 \
3208 || $gcc_cv_ld -r -o conftest1.so conftest1.o \
3209 conftest2.o conftest3.o > /dev/null 2>&1; then
3210 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
3211 | sed -e '/myfoosect/!d' -e N`
3212 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
3213 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
3214 gcc_cv_ld_ro_rw_mix=read-only
3216 gcc_cv_ld_ro_rw_mix=read-write
3222 rm -f conftest.* conftest[123].*
3225 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
3226 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
3227 [Define if your linker links a mix of read-only
3228 and read-write sections into a read-write section.])
3230 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
3232 gcc_AC_INITFINI_ARRAY
3234 # Check if we have .[us]leb128, and support symbol arithmetic with it.
3235 # Older versions of GAS and some non-GNU assemblers, have a bugs handling
3236 # these directives, even when they appear to accept them.
3237 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,,
3244 .uleb128 0x8000000000000000
3247 if test "x$gcc_cv_objdump" != x; then
3248 if $gcc_cv_objdump -s conftest.o 2>/dev/null \
3249 | grep '04800a8e 78808080 80808080 808001' >/dev/null; then
3250 gcc_cv_as_leb128=yes
3252 elif test "x$gcc_cv_otool" != x; then
3253 if $gcc_cv_otool -d conftest.o 2>/dev/null \
3254 | grep '04 80 0a 8e 78 80 80 80 80 80 80 80 80 80 01' >/dev/null; then
3255 gcc_cv_as_leb128=yes
3258 # play safe, assume the assembler is broken.
3262 [AC_DEFINE(HAVE_AS_LEB128, 1,
3263 [Define if your assembler supports .sleb128 and .uleb128.])],
3264 [AC_DEFINE(HAVE_AS_LEB128, 0,
3265 [Define if your assembler supports .sleb128 and .uleb128.])])
3267 # Determine if an .eh_frame section is read-only.
3268 gcc_fn_eh_frame_ro () {
3269 $gcc_cv_as $1 -o conftest.o conftest.s > /dev/null 2>&1 && \
3270 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
3271 sed -e '/.eh_frame/!d' -e N | grep READONLY > /dev/null
3274 # Check if we have assembler support for unwind directives.
3275 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,,
3281 .cfi_escape 1, 2, 3, 4, 5
3285 # If the linker used on Solaris (like Sun ld) isn't capable of merging
3286 # read-only and read-write sections, we need to make sure that the
3287 # assembler used emits read-write .eh_frame sections.
3288 if test "x$gcc_cv_ld_ro_rw_mix" = xread-write; then
3289 gcc_cv_as_cfi_directive=yes
3290 elif test "x$gcc_cv_objdump" = x; then
3291 # No objdump, err on the side of caution.
3292 gcc_cv_as_cfi_directive=no
3294 if test x$gas = xyes; then
3302 sparc*-*-solaris2.*)
3303 # On Solaris/SPARC, .eh_frame sections should always be read-write.
3304 if gcc_fn_eh_frame_ro $as_32_opt \
3305 || gcc_fn_eh_frame_ro $as_64_opt; then
3306 gcc_cv_as_cfi_directive=no
3308 gcc_cv_as_cfi_directive=yes
3311 i?86-*-solaris2.* | x86_64-*-solaris2.*)
3312 # On Solaris/x86, make sure that GCC and assembler agree on using
3313 # read-only .eh_frame sections for 64-bit.
3314 if gcc_fn_eh_frame_ro $as_32_opt; then
3315 gcc_cv_as_cfi_directive=no
3316 elif gcc_fn_eh_frame_ro $as_64_opt; then
3317 gcc_cv_as_cfi_directive=yes
3319 gcc_cv_as_cfi_directive=no
3326 gcc_cv_as_cfi_directive=yes
3329 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
3330 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,,
3333 .cfi_adjust_cfa_offset 64
3335 .cfi_adjust_cfa_offset 128
3338 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
3339 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
3340 gcc_cv_as_cfi_advance_working=yes
3344 # no objdump, err on the side of caution
3345 gcc_cv_as_cfi_advance_working=no
3347 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
3348 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
3349 [`if test $gcc_cv_as_cfi_directive = yes \
3350 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
3351 [Define 0/1 if your assembler supports CFI directives.])
3353 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
3354 gcc_GAS_CHECK_FEATURE([cfi personality directive],
3355 gcc_cv_as_cfi_personality_directive,,
3358 .cfi_personality 0, symbol
3360 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
3361 [`if test $gcc_cv_as_cfi_personality_directive = yes; then echo 1; else echo 0; fi`],
3362 [Define 0/1 if your assembler supports .cfi_personality.])
3364 gcc_GAS_CHECK_FEATURE([cfi sections directive],
3365 gcc_cv_as_cfi_sections_directive,,
3367 .cfi_sections .debug_frame, .eh_frame
3371 win32 | pe | cygwin* | mingw32*)
3372 # Need to check that we generated the correct relocation for the
3373 # .debug_frame section. This was fixed for binutils 2.21.
3374 gcc_cv_as_cfi_sections_directive=no
3375 if test "x$gcc_cv_objdump" != x; then
3376 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
3377 grep -i secrel > /dev/null; then
3378 gcc_cv_as_cfi_sections_directive=yes
3383 gcc_cv_as_cfi_sections_directive=yes
3386 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
3387 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
3388 [`if test $gcc_cv_as_cfi_sections_directive = yes; then echo 1; else echo 0; fi`],
3389 [Define 0/1 if your assembler supports .cfi_sections.])
3391 # GAS versions up to and including 2.11.0 may mis-optimize
3393 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,,
3400 .section .eh_frame,"aw",@progbits
3402 .4byte .LECIE1-.LSCIE1
3416 .4byte .LEFDE1-.LASFDE1
3418 .4byte .LASFDE1-__FRAME_BEGIN__
3426 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
3427 cat > conftest.lit <<EOF
3428 0000 10000000 00000000 017a0001 781a0004 .........z..x...
3429 0010 01000000 12000000 18000000 00000000 ................
3430 0020 08000000 04080000 0044 .........D @&t@
3432 cat > conftest.big <<EOF
3433 0000 00000010 00000000 017a0001 781a0004 .........z..x...
3434 0010 00000001 00000012 00000018 00000000 ................
3435 0020 00000008 04000000 0844 .........D @&t@
3437 # If the assembler didn't choke, and we can objdump,
3438 # and we got the correct data, then succeed.
3439 # The text in the here-document typically retains its unix-style line
3440 # endings, while the output of objdump will use host line endings.
3441 # Therefore, use diff -b for the comparisons.
3442 if test x$gcc_cv_objdump != x \
3443 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
3444 | tail -3 > conftest.got \
3445 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
3446 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
3448 gcc_cv_as_eh_frame=yes
3449 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
3450 gcc_cv_as_eh_frame=buggy
3452 # Uh oh, what do we do now?
3453 gcc_cv_as_eh_frame=no
3456 if test $gcc_cv_as_eh_frame = buggy; then
3457 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
3458 [Define if your assembler mis-optimizes .eh_frame data.])
3461 # Test if the assembler supports the section flag 'e' or #exclude for
3462 # specifying an excluded section.
3463 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_e,
3467 if test $gcc_cv_as_section_exclude_e = no; then
3469 # Solaris as uses #exclude instead.
3473 conftest_s='.section "foo1", #exclude'
3475 i?86-*-solaris2* | x86_64-*-solaris2*)
3476 conftest_s='.section foo1, #exclude'
3481 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_hash,,
3485 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3486 [`if test $gcc_cv_as_section_exclude_e = yes || test $gcc_cv_as_section_exclude_hash = yes; then echo 1; else echo 0; fi`],
3487 [Define if your assembler supports specifying the exclude section flag.])
3489 # Test if the assembler supports the section flag 'R' for specifying
3490 # section with SHF_GNU_RETAIN.
3492 # Solaris may use GNU assembler with Solairs ld. Even if GNU
3493 # assembler supports the section flag 'R', it doesn't mean that
3494 # Solairs ld supports it.
3496 gcc_cv_as_shf_gnu_retain=no
3499 gcc_GAS_CHECK_FEATURE([section 'R' flag], gcc_cv_as_shf_gnu_retain,
3501 [.section .foo,"awR",%progbits
3505 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_GNU_RETAIN,
3506 [`if test $gcc_cv_as_shf_gnu_retain = yes; then echo 1; else echo 0; fi`],
3507 [Define 0/1 if your assembler supports marking sections with SHF_GNU_RETAIN flag.])
3509 # Test if the assembler supports the section flag 'o' for specifying
3510 # section with link-order.
3512 # Solaris may use GNU assembler with Solairs ld. Even if GNU
3513 # assembler supports the section flag 'o', it doesn't mean that
3514 # Solairs ld supports it.
3516 gcc_cv_as_section_link_order=no
3519 gcc_GAS_CHECK_FEATURE([section 'o' flag], gcc_cv_as_section_link_order,
3523 .section __patchable_function_entries,"awo",%progbits,.foo
3527 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_LINK_ORDER,
3528 [`if test $gcc_cv_as_section_link_order = yes; then echo 1; else echo 0; fi`],
3529 [Define 0/1 if your assembler supports 'o' flag in .section directive.])
3531 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
3533 [.section .rodata.str, "aMS", @progbits, 1])
3534 if test $gcc_cv_as_shf_merge = no; then
3535 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
3537 [.section .rodata.str, "aMS", %progbits, 1])
3539 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
3540 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
3541 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
3543 gcc_cv_ld_aligned_shf_merge=yes
3545 # SHF_MERGE support is broken in Solaris ld up to Solaris 11.3/SPARC for
3547 sparc*-*-solaris2.11*)
3548 if test x"$gnu_ld" = xno \
3549 && test "$ld_vers_major" -lt 2 && test "$ld_vers_minor" -lt 3159; then
3550 gcc_cv_ld_aligned_shf_merge=no
3554 AC_DEFINE_UNQUOTED(HAVE_LD_ALIGNED_SHF_MERGE,
3555 [`if test $gcc_cv_ld_aligned_shf_merge = yes; then echo 1; else echo 0; fi`],
3556 [Define 0/1 if your linker supports the SHF_MERGE flag with section alignment > 1.])
3558 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
3559 gcc_cv_as_comdat_group,
3561 [.section .text,"axG",@progbits,.foo,comdat])
3562 if test $gcc_cv_as_comdat_group = yes; then
3563 gcc_cv_as_comdat_group_percent=no
3564 gcc_cv_as_comdat_group_group=no
3566 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
3567 gcc_cv_as_comdat_group_percent,
3569 [.section .text,"axG",%progbits,.foo,comdat])
3570 if test $gcc_cv_as_comdat_group_percent = yes; then
3571 gcc_cv_as_comdat_group_group=no
3574 # Sun as uses a completely different syntax.
3579 .group foo,".text%foo",#comdat
3580 .section ".text%foo", #alloc,#execinstr,#progbits
3585 i?86-*-solaris2* | x86_64-*-solaris2*)
3587 .group foo,.text%foo,#comdat
3588 .section .text%foo, "ax", @progbits
3594 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
3595 gcc_cv_as_comdat_group_group,
3599 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
3600 gcc_cv_as_comdat_group_group=no
3604 if test x"$ld_is_gold" = xyes; then
3606 elif test x"$ld_is_mold" = xyes; then
3608 elif test $in_tree_ld = yes ; then
3610 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3611 && test $in_tree_ld_is_elf = yes; then
3614 elif echo "$ld_ver" | grep GNU > /dev/null; then
3616 if test 0"$ld_date" -lt 20050308; then
3617 if test -n "$ld_date"; then
3618 # If there was date string, but was earlier than 2005-03-08, fail
3620 elif test "$ld_vers_major" -lt 2; then
3622 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
3629 *-*-solaris2.1[1-9]*)
3631 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
3632 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
3635 # If using Sun as for COMDAT group as emitted by GCC, one needs at
3636 # least ld version 1.2267.
3637 if test "$ld_vers_major" -gt 1; then
3639 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
3641 elif test "$ld_vers_minor" -ge 2267; then
3646 # Assume linkers other than GNU ld don't support COMDAT group.
3652 # Allow overriding the automatic COMDAT group tests above.
3653 AC_ARG_ENABLE(comdat,
3654 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
3655 [comdat_group="$enable_comdat"])
3656 if test $comdat_group = no; then
3657 gcc_cv_as_comdat_group=no
3658 gcc_cv_as_comdat_group_percent=no
3659 gcc_cv_as_comdat_group_group=no
3661 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
3662 [`if test $gcc_cv_as_comdat_group = yes \
3663 || test $gcc_cv_as_comdat_group_percent = yes \
3664 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
3665 [Define 0/1 if your assembler and linker support COMDAT groups.])
3667 # Restrict this test to Solaris/x86: other targets define this statically.
3669 i?86-*-solaris2* | x86_64-*-solaris2*)
3670 AC_MSG_CHECKING(support for hidden thunks in linkonce sections)
3671 if test $in_tree_ld = yes || echo "$ld_ver" | grep GNU > /dev/null; then
3675 # Full support for hidden thunks in linkonce sections only appeared in
3676 # Solaris 11/OpenSolaris.
3677 *-*-solaris2.1[[1-9]]*)
3685 AC_MSG_RESULT($hidden_linkonce)
3686 AC_DEFINE_UNQUOTED(USE_HIDDEN_LINKONCE,
3687 [`if test $hidden_linkonce = yes; then echo 1; else echo 0; fi`],
3688 [Define 0/1 if your linker supports hidden thunks in linkonce sections.])
3692 gcc_GAS_CHECK_FEATURE([line table is_stmt support],
3696 .loc 1 1 0 is_stmt 1],,
3697 [AC_DEFINE(HAVE_GAS_LOC_STMT, 1,
3698 [Define if your assembler supports the .loc is_stmt sub-directive.])])
3700 gcc_GAS_CHECK_FEATURE([line table discriminator support],
3701 gcc_cv_as_discriminator,,
3704 .loc 1 1 0 discriminator 1],,
3705 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
3706 [Define if your assembler supports the .loc discriminator sub-directive.])])
3708 # Catch the newlib flag of the same name so we can gate GCC features on it.
3709 AC_ARG_ENABLE(newlib-nano-formatted-io,
3710 [AS_HELP_STRING([--enable-newlib-nano-formatted-io], [Use nano version
3712 [case "${enableval}" in
3716 AC_MSG_ERROR([unknown newlib-nano-formatted-io setting $enableval])
3720 # Thread-local storage - the check is heavily parameterized.
3727 .section ".tdata","awT",@progbits
3730 ldq $27,__tls_get_addr($29) !literal!1
3731 lda $16,foo($29) !tlsgd!1
3732 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
3733 ldq $27,__tls_get_addr($29) !literal!2
3734 lda $16,foo($29) !tlsldm!2
3735 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
3736 ldq $1,foo($29) !gotdtprel
3737 ldah $2,foo($29) !dtprelhi
3738 lda $3,foo($2) !dtprello
3739 lda $4,foo($29) !dtprel
3740 ldq $1,foo($29) !gottprel
3741 ldah $2,foo($29) !tprelhi
3742 lda $3,foo($2) !tprello
3743 lda $4,foo($29) !tprel'
3744 tls_as_opt=--fatal-warnings
3748 add_s r0,r0, @foo@tpoff'
3750 cris-*-*|crisv32-*-*)
3752 .section ".tdata","awT",@progbits
3757 tls_as_opt=--fatal-warnings
3761 .section ".tdata","awT",@progbits
3771 .section ".tdata","awT",@progbits
3775 addil LT%foo-$tls_gdidx$,gp
3776 ldo RT%foo-$tls_gdidx$(%r1),%arg0
3779 addil LT%foo-$tls_ldidx$,gp
3781 ldo RT%foo-$tls_ldidx$(%r1),%arg0
3782 addil LR%foo-$tls_dtpoff$,%ret0
3783 ldo RR%foo-$tls_dtpoff$(%r1),%t1
3785 addil LT%foo-$tls_ieoff$,gp
3786 ldw RT%foo-$tls_ieoff$(%r1),%t2
3789 addil LR%foo-$tls_leoff$,%t1
3790 ldo RR%foo-$tls_leoff$(%r1),%t2'
3791 tls_as_opt=--fatal-warnings
3795 .section ".tdata","awT",%progbits
3804 i[34567]86-*-* | x86_64-*-*)
3806 i[34567]86-*-solaris2.* | x86_64-*-solaris2.*)
3813 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3815 .section .tdata,"awt",@progbits'
3818 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
3819 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
3823 .section ".tdata","awT",@progbits'
3825 tls_as_opt="--fatal-warnings"
3829 if test x$on_solaris = xyes; then
3831 yes) tls_as_opt="$tls_as_opt --32" ;;
3834 conftest_s="$conftest_s
3838 leal foo@tlsgd(,%ebx,1), %eax
3839 leal foo@tlsldm(%ebx), %eax
3840 leal foo@dtpoff(%eax), %edx
3841 movl foo@gottpoff(%ebx), %eax
3842 subl foo@gottpoff(%ebx), %eax
3843 addl foo@gotntpoff(%ebx), %eax
3844 movl foo@indntpoff, %eax
3845 movl \$foo@tpoff, %eax
3846 subl \$foo@tpoff, %eax
3847 leal foo@ntpoff(%ecx), %eax"
3850 if test x$on_solaris = xyes; then
3852 yes) tls_as_opt="$tls_as_opt --64" ;;
3853 no) tls_as_opt="$tls_as_opt -xarch=amd64" ;;
3856 conftest_s="$conftest_s
3860 leaq foo@tlsgd(%rip), %rdi
3861 leaq foo@tlsld(%rip), %rdi
3862 leaq foo@dtpoff(%rax), %rdx
3863 movq foo@gottpoff(%rip), %rax
3864 movq \$foo@tpoff, %rax"
3870 .section ".tdata","awT",@progbits
3873 addl r16 = @ltoff(@dtpmod(foo#)), gp
3874 addl r17 = @ltoff(@dtprel(foo#)), gp
3875 addl r18 = @ltoff(@tprel(foo#)), gp
3876 addl r19 = @dtprel(foo#), gp
3877 adds r21 = @dtprel(foo#), r13
3878 movl r23 = @dtprel(foo#)
3879 addl r20 = @tprel(foo#), gp
3880 adds r22 = @tprel(foo#), r13
3881 movl r24 = @tprel(foo#)'
3882 tls_as_opt=--fatal-warnings
3886 .section .tdata,"awT",@progbits
3893 tls_as_opt='--fatal-warnings'
3897 .section .tdata,"awT",@progbits
3901 addik r5,r20,x@TLSGD
3902 addik r5,r20,x@TLSLDM'
3903 tls_as_opt='--fatal-warnings'
3907 .section .tdata,"awT",@progbits
3911 addiu $4, $28, %tlsgd(x)
3912 addiu $4, $28, %tlsldm(x)
3913 lui $4, %dtprel_hi(x)
3914 addiu $4, $4, %dtprel_lo(x)
3915 lw $4, %gottprel(x)($28)
3916 lui $4, %tprel_hi(x)
3917 addiu $4, $4, %tprel_lo(x)'
3918 tls_as_opt='-32 --fatal-warnings'
3922 .section .tdata,"awT",@progbits
3927 move.l x@TLSGD(%a5),%a0
3928 move.l x@TLSLDM(%a5),%a0
3929 move.l x@TLSLDO(%a5),%a0
3930 move.l x@TLSIE(%a5),%a0
3931 move.l x@TLSLE(%a5),%a0'
3932 tls_as_opt='--fatal-warnings'
3936 .section ".tdata","awT",@progbits'
3937 tls_as_opt="--fatal-warnings"
3941 .section ".tdata","awT",%progbits
3945 add x0, x0, #:tlsgd_lo12:x
3948 tls_as_opt='--fatal-warnings'
3952 .section ".tdata","awT",@progbits
3955 l.movhi r3, tpoffha(foo)
3957 l.lwz r4, tpofflo(foo)(r3)'
3958 tls_as_opt=--fatal-warnings
3962 .extern __get_tpointer
3978 .section ".tdata","awT",@progbits
3986 addi 3,2,ld0@got@tlsgd
3992 addi 3,2,x1@got@tlsld
3998 addis 9,3,x2@dtprel@ha
3999 addi 9,9,x2@dtprel@l
4002 ld 9,x3@got@dtprel(2)
4006 tls_as_opt="-a64 --fatal-warnings"
4010 .section ".tdata","awT",@progbits
4018 addi 3,31,ld0@got@tlsgd
4020 addi 3,31,x1@got@tlsld
4023 addis 9,3,x2@dtprel@ha
4024 addi 9,9,x2@dtprel@l
4025 lwz 9,x3@got@tprel(31)
4028 addis 9,2,x2@tprel@ha
4029 addi 9,9,x2@tprel@l'
4030 tls_as_opt="-a32 --fatal-warnings"
4034 .section .tdata,"awT",@progbits
4038 call __tls_get_addr'
4039 tls_as_opt='--fatal-warnings'
4043 .section ".tdata","awT",@progbits
4052 l %r1,foo@GOTNTPOFF(%r12)
4053 l %r1,0(%r1):tls_load:foo
4054 bas %r14,0(%r1,%r13):tls_gdcall:foo
4055 bas %r14,0(%r1,%r13):tls_ldcall:foo'
4056 tls_as_opt="-m31 --fatal-warnings"
4060 .section ".tdata","awT",@progbits
4068 lg %r1,foo@GOTNTPOFF(%r12)
4069 larl %r1,foo@INDNTPOFF
4070 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
4071 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
4072 tls_as_opt="-m64 -Aesame --fatal-warnings"
4074 sh-*-* | sh[123456789lbe]*-*-*)
4076 .section ".tdata","awT",@progbits
4084 tls_as_opt=--fatal-warnings
4088 sparc*-sun-solaris2.*)
4095 if test x$on_solaris = xyes && test x$gas_flag = xno; then
4097 .section ".tdata",#alloc,#write,#tls'
4100 .section ".tdata","awT",@progbits'
4101 tls_as_opt="-32 --fatal-warnings"
4103 conftest_s="$conftest_s
4106 sethi %tgd_hi22(foo), %o0
4107 add %o0, %tgd_lo10(foo), %o1
4108 add %l7, %o1, %o0, %tgd_add(foo)
4109 call __tls_get_addr, %tgd_call(foo)
4110 sethi %tldm_hi22(foo), %l1
4111 add %l1, %tldm_lo10(foo), %l2
4112 add %l7, %l2, %o0, %tldm_add(foo)
4113 call __tls_get_addr, %tldm_call(foo)
4114 sethi %tldo_hix22(foo), %l3
4115 xor %l3, %tldo_lox10(foo), %l4
4116 add %o0, %l4, %l5, %tldo_add(foo)
4117 sethi %tie_hi22(foo), %o3
4118 add %o3, %tie_lo10(foo), %o3
4119 ld [%l7 + %o3], %o2, %tie_ld(foo)
4120 add %g7, %o2, %o4, %tie_add(foo)
4121 sethi %tle_hix22(foo), %l1
4122 xor %l1, %tle_lox10(foo), %o5
4123 ld [%g7 + %o5], %o1"
4127 .section ".tdata","awT",@progbits
4130 movi a8, foo@TLSFUNC
4131 movi a10, foo@TLSARG
4132 callx8.tls a8, foo@TLSCALL'
4137 if test "x$enable_tls" = xno ; then
4138 : # TLS explicitly disabled.
4139 elif test "x$enable_tls" = xyes ; then
4140 set_have_as_tls=yes # TLS explicitly enabled.
4141 elif test -z "$conftest_s"; then
4142 : # If we don't have a check, assume no support.
4144 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
4145 [$tls_as_opt], [$conftest_s],,
4146 [set_have_as_tls=yes])
4148 if test $set_have_as_tls = yes ; then
4149 AC_DEFINE(HAVE_AS_TLS, 1,
4150 [Define if your assembler and linker support thread-local storage.])
4153 # Target-specific assembler checks.
4155 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
4156 gcc_cv_ld_static_dynamic=no
4157 gcc_cv_ld_static_option='-Bstatic'
4158 gcc_cv_ld_dynamic_option='-Bdynamic'
4159 if test $in_tree_ld = yes ; then
4160 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
4161 gcc_cv_ld_static_dynamic=yes
4163 elif test x$gcc_cv_ld != x; then
4164 # Check if linker supports -Bstatic/-Bdynamic option
4165 if $gcc_cv_ld --help 2>&1 | grep -- -Bstatic > /dev/null \
4166 && $gcc_cv_ld --help 2>&1 | grep -- -Bdynamic > /dev/null; then
4167 gcc_cv_ld_static_dynamic=yes
4170 # AIX ld uses -b flags
4171 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
4172 gcc_cv_ld_static_dynamic=yes
4173 gcc_cv_ld_static_option="-bstatic"
4174 gcc_cv_ld_dynamic_option="-bdynamic"
4176 # HP-UX ld uses -a flags to select between shared and archive.
4178 if test x"$gnu_ld" = xno; then
4179 gcc_cv_ld_static_dynamic=yes
4180 gcc_cv_ld_static_option="-aarchive_shared"
4181 gcc_cv_ld_dynamic_option="-adefault"
4184 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
4186 gcc_cv_ld_static_dynamic=yes
4191 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
4192 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
4193 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
4194 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
4195 [Define to the linker option to disable use of shared objects.])
4196 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
4197 [Define to the linker option to enable use of shared objects.])
4199 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
4201 AC_MSG_CHECKING(linker --version-script option)
4202 gcc_cv_ld_version_script=no
4203 ld_version_script_option=''
4204 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
4205 gcc_cv_ld_version_script=yes
4206 ld_version_script_option='--version-script'
4207 elif test x$gcc_cv_ld != x; then
4209 # Solaris 2 ld always supports -M. It also supports a subset of
4210 # --version-script since Solaris 11.4, but requires
4211 # -z gnu-version-script-compat to activate.
4213 gcc_cv_ld_version_script=yes
4214 ld_version_script_option='-M'
4218 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
4219 AC_MSG_RESULT($gcc_cv_ld_version_script)
4220 AC_SUBST(ld_version_script_option)
4222 AC_MSG_CHECKING(linker soname option)
4224 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
4225 gcc_cv_ld_soname=yes
4226 ld_soname_option='-soname'
4227 elif test x$gcc_cv_ld != x; then
4230 gcc_cv_ld_soname=yes
4231 ld_soname_option='-install_name'
4233 # Solaris 2 ld always supports -h. It also supports --soname for GNU
4234 # ld compatiblity since some Solaris 10 update.
4236 gcc_cv_ld_soname=yes
4237 ld_soname_option='-h'
4241 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
4242 AC_MSG_RESULT($gcc_cv_ld_soname)
4243 AC_SUBST(ld_soname_option)
4245 if test x"$demangler_in_ld" = xyes; then
4246 AC_MSG_CHECKING(linker --demangle support)
4247 gcc_cv_ld_demangle=no
4248 if test $in_tree_ld = yes; then
4249 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
4250 gcc_cv_ld_demangle=yes
4252 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
4253 # Check if the GNU linker supports --demangle option
4254 if $gcc_cv_ld --help 2>&1 | grep no-demangle > /dev/null; then
4255 gcc_cv_ld_demangle=yes
4258 if test x"$gcc_cv_ld_demangle" = xyes; then
4259 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
4260 [Define if your linker supports --demangle option.])
4262 AC_MSG_RESULT($gcc_cv_ld_demangle)
4265 AC_MSG_CHECKING(linker plugin support)
4267 if test -f liblto_plugin.la; then
4268 save_ld_ver="$ld_ver"
4269 save_ld_vers_major="$ld_vers_major"
4270 save_ld_vers_minor="$ld_vers_minor"
4271 save_ld_is_gold="$ld_is_gold"
4275 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
4277 # FIXME: ld_is_gold?
4278 ld_vers_major="$gcc_cv_gld_major_version"
4279 ld_vers_minor="$gcc_cv_gld_minor_version"
4281 # Determine plugin linker version.
4282 # FIXME: Partial duplicate from above, generalize.
4284 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
4285 if echo "$ld_ver" | grep GNU > /dev/null; then
4286 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
4288 ld_vers=`echo $ld_ver | sed -n \
4289 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
4291 ld_vers=`echo $ld_ver | sed -n \
4292 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
4294 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
4295 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
4300 # Determine plugin support.
4301 if echo "$ld_ver" | grep GNU > /dev/null; then
4302 # Require GNU ld or gold 2.21+ for plugin support by default.
4303 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
4305 elif test "$ld_is_mold" = yes; then
4307 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
4308 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
4313 ld_ver="$save_ld_ver"
4314 ld_vers_major="$save_ld_vers_major"
4315 ld_vers_minor="$save_ld_vers_minor"
4316 ld_is_gold="$save_ld_is_gold"
4318 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
4319 [Define to the level of your linker's plugin support.])
4320 AC_MSG_RESULT($gcc_cv_lto_plugin)
4322 # Target OS-specific assembler checks.
4324 case "$target_os" in
4326 gcc_GAS_CHECK_FEATURE([-mmacosx-version-min option],
4327 gcc_cv_as_mmacosx_version_min,
4328 [-mmacosx-version-min=10.1], [.text],,
4329 [AC_DEFINE(HAVE_AS_MMACOSX_VERSION_MIN_OPTION, 1,
4330 [Define if your Mac OS X assembler supports the -mmacos-version-min option.])])
4334 # Target CPU-specific assembler checks.
4338 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,
4339 [-mabi=lp64], [.text],,,)
4340 if test x$gcc_cv_as_aarch64_mabi = xyes; then
4341 AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
4342 [Define if your assembler supports the -mabi option.])
4344 if test x$with_abi = xilp32; then
4345 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
4346 Upgrade the Assembler.])
4348 if test x"$with_multilib_list" = xdefault; then
4349 TM_MULTILIB_CONFIG=lp64
4351 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
4352 for aarch64_multilib in ${aarch64_multilibs}; do
4353 case ${aarch64_multilib} in
4355 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
4356 Upgrade the Assembler.])
4364 # Check if we have binutils support for relocations types needed by -fpic
4365 gcc_GAS_CHECK_FEATURE([-fpic relocs], gcc_cv_as_aarch64_picreloc,,
4368 ldr x0, [[x2, #:gotpage_lo15:globalsym]]
4369 ],,[AC_DEFINE(HAVE_AS_SMALL_PIC_RELOCS, 1,
4370 [Define if your assembler supports relocs needed by -fpic.])])
4371 # Enable Branch Target Identification Mechanism and Return Address
4372 # Signing by default.
4373 AC_ARG_ENABLE(standard-branch-protection,
4375 AS_HELP_STRING([--enable-standard-branch-protection],
4376 [enable Branch Target Identification Mechanism and Return Address Signing by default for AArch64])
4377 AS_HELP_STRING([--disable-standard-branch-protection],
4378 [disable Branch Target Identification Mechanism and Return Address Signing by default for AArch64])
4383 tm_defines="${tm_defines} TARGET_ENABLE_BTI=1 TARGET_ENABLE_PAC_RET=1"
4388 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-standard-branch-protection.\
4389 Valid choices are 'yes' and 'no'.])
4394 # Enable default workaround for AArch64 Cortex-A53 erratum 835769.
4395 AC_ARG_ENABLE(fix-cortex-a53-835769,
4397 AS_HELP_STRING([--enable-fix-cortex-a53-835769],
4398 [enable workaround for AArch64 Cortex-A53 erratum 835769 by default])
4399 AS_HELP_STRING([--disable-fix-cortex-a53-835769],
4400 [disable workaround for AArch64 Cortex-A53 erratum 835769 by default])
4405 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1"
4410 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\
4411 Valid choices are 'yes' and 'no'.])
4417 # Enable default workaround for AArch64 Cortex-A53 erratum 843419.
4418 AC_ARG_ENABLE(fix-cortex-a53-843419,
4420 AS_HELP_STRING([--enable-fix-cortex-a53-843419],
4421 [enable workaround for AArch64 Cortex-A53 erratum 843419 by default])
4422 AS_HELP_STRING([--disable-fix-cortex-a53-843419],
4423 [disable workaround for AArch64 Cortex-A53 erratum 843419 by default])
4428 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1"
4433 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\
4434 Valid choices are 'yes' and 'no'.])
4442 # All TARGET_ABI_OSF targets.
4443 alpha*-*-linux* | alpha*-*-*bsd*)
4444 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4445 gcc_cv_as_alpha_explicit_relocs,,
4448 extbl $3, $2, $3 !lituse_bytoff!1
4449 ldq $2, a($29) !literal!1
4450 ldq $4, b($29) !literal!2
4451 ldq_u $3, 0($2) !lituse_base!1
4452 ldq $27, f($29) !literal!5
4453 jsr $26, ($27), f !lituse_jsr!5
4454 ldah $29, 0($26) !gpdisp!3
4455 lda $0, c($29) !gprel
4456 ldah $1, d($29) !gprelhigh
4457 lda $1, d($1) !gprellow
4458 lda $29, 0($29) !gpdisp!3],,
4459 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
4460 [Define if your assembler supports explicit relocations.])])
4461 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
4462 gcc_cv_as_alpha_jsrdirect_relocs,,
4465 ldq $27, a($29) !literal!1
4466 jsr $26, ($27), a !lituse_jsrdirect!1],,
4467 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
4468 [Define if your assembler supports the lituse_jsrdirect relocation.])])
4472 gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax,
4473 [--mlink-relax], [.text],,
4474 [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1,
4475 [Define if your avr assembler supports --mlink-relax option.])])
4477 gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,
4479 [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1,
4480 [Define if your avr assembler supports -mrmw option.])])
4482 gcc_GAS_CHECK_FEATURE([__gcc_isr pseudo instruction],
4483 gcc_cv_as_avr_mgccisr,
4489 [AC_DEFINE(HAVE_AS_AVR_MGCCISR_OPTION, 1,
4490 [Define if your avr assembler supports -mgcc-isr option.])])
4492 # Check how default linker description file implements .rodata for
4493 # avrxmega3 (PR21472). avr-gcc assumes .rodata is *not* loaded to
4494 # RAM so avr-gcc skips __do_copy_data for .rodata objects.
4495 AC_MSG_CHECKING(binutils for avrxmega3 .rodata support)
4496 cat > conftest.s <<EOF
4497 .section .rodata,"a",@progbits
4499 ;; avr-nm should print "... R xxvaryy", not "... D xxvaryy".
4504 AC_TRY_COMMAND([$gcc_cv_as -mmcu=avrxmega3 conftest.s -o conftest.o])
4505 AC_TRY_COMMAND([$gcc_cv_ld -mavrxmega3 conftest.o -o conftest.elf])
4506 AC_TRY_COMMAND([$gcc_cv_nm conftest.elf > conftest.nm])
4507 if test -s conftest.nm
4509 if grep ' R xxvaryy' conftest.nm > /dev/null; then
4511 AC_DEFINE(HAVE_LD_AVR_AVRXMEGA3_RODATA_IN_FLASH, 1,
4512 [Define if your default avr linker script for avrxmega3 leaves .rodata in flash.])
4514 AC_MSG_RESULT(no: avrxmega3 .rodata located in RAM)
4515 echo "$as_me: nm output was" >&AS_MESSAGE_LOG_FD
4516 cat conftest.nm >&AS_MESSAGE_LOG_FD
4517 avr_ld_ver="`$gcc_cv_ld -v | sed -e 's:^.* ::'`"
4518 AC_MSG_WARN([[support for avrxmega3 .rodata in flash needs Binutils 2.29 or higher (have $avr_ld_ver)]])
4521 AC_MSG_RESULT(test failed)
4522 echo "$as_me: failed program was" >&AS_MESSAGE_LOG_FD
4523 cat conftest.s >&AS_MESSAGE_LOG_FD
4524 AC_MSG_WARN([[see `config.log' for details]])
4526 rm -f conftest.s conftest.o conftest.elf conftest.nm
4530 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
4531 gcc_cv_as_cris_no_mul_bug,
4532 [-no-mul-bug-abort], [.text],,
4533 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
4534 [Define if your assembler supports the -no-mul-bug-abort option.])])
4538 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,
4540 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
4541 [Define if your assembler supports -relax option.])])
4543 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
4544 gcc_cv_as_sparc_gotdata_op,
4551 sethi %gdop_hix22(foo), %g1
4552 xor %g1, %gdop_lox10(foo), %g1
4553 ld [[%l7 + %g1]], %g2, %gdop(foo)],
4554 [if test x$gcc_cv_ld != x \
4555 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4556 if test x$gcc_cv_objdump != x; then
4557 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
4558 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
4559 gcc_cv_as_sparc_gotdata_op=no
4561 gcc_cv_as_sparc_gotdata_op=yes
4566 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
4567 [Define if your assembler and linker support GOTDATA_OP relocs.])])
4569 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
4570 gcc_cv_as_sparc_ua_pcrel,
4578 .uaword %r_disp32(foo)],
4579 [if test x$gcc_cv_ld != x \
4580 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4581 gcc_cv_as_sparc_ua_pcrel=yes
4584 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
4585 [Define if your assembler and linker support unaligned PC relative relocs.])
4587 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
4588 gcc_cv_as_sparc_ua_pcrel_hidden,
4593 .uaword %r_disp32(foo)
4594 .byte 0x32, 0x33, 0x34
4599 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4600 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
4601 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
4602 | grep ' 31000000 07323334' > /dev/null 2>&1; then
4603 if $gcc_cv_objdump -R conftest 2> /dev/null \
4604 | grep 'DISP32' > /dev/null 2>&1; then
4607 gcc_cv_as_sparc_ua_pcrel_hidden=yes
4611 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
4612 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
4613 ]) # unaligned pcrel relocs
4615 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
4616 gcc_cv_as_sparc_offsetable_lo10,
4619 or %g1, %lo(ab) + 12, %g1
4620 or %g1, %lo(ab + 12), %g1],
4621 [if test x$gcc_cv_objdump != x \
4622 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
4623 | grep ' 82106000 82106000' > /dev/null 2>&1; then
4624 gcc_cv_as_sparc_offsetable_lo10=yes
4626 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
4627 [Define if your assembler supports offsetable %lo().])])
4629 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
4630 gcc_cv_as_sparc_fmaf,
4633 .register %g2, #scratch
4634 .register %g3, #scratch
4636 fmaddd %f0, %f2, %f4, %f6
4637 addxccc %g1, %g2, %g3
4638 fsrl32 %f2, %f4, %f8
4639 fnaddd %f10, %f12, %f14],,
4640 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
4641 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
4643 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
4644 gcc_cv_as_sparc_sparc4,
4647 .register %g2, #scratch
4648 .register %g3, #scratch
4651 1: cwbneg %g2, %g3, 1f
4654 aes_kexpand0 %f4, %f6, %f8
4655 des_round %f38, %f40, %f42, %f44
4656 camellia_f %f54, %f56, %f58, %f60
4657 kasumi_fi_xor %f46, %f48, %f50, %f52],,
4658 [AC_DEFINE(HAVE_AS_SPARC4, 1,
4659 [Define if your assembler supports SPARC4 instructions.])])
4661 gcc_GAS_CHECK_FEATURE([SPARC5 and VIS 4.0 instructions],
4662 gcc_cv_as_sparc_sparc5,
4665 .register %g2, #scratch
4666 .register %g3, #scratch
4669 fpadd8 %f0, %f2, %f4],,
4670 [AC_DEFINE(HAVE_AS_SPARC5_VIS4, 1,
4671 [Define if your assembler supports SPARC5 and VIS 4.0 instructions.])])
4673 gcc_GAS_CHECK_FEATURE([SPARC6 instructions],
4674 gcc_cv_as_sparc_sparc6,
4677 .register %g2, #scratch
4678 .register %g3, #scratch
4681 fpsll64x %f0, %f2, %f4],,
4682 [AC_DEFINE(HAVE_AS_SPARC6, 1,
4683 [Define if your assembler supports SPARC6 instructions.])])
4685 gcc_GAS_CHECK_FEATURE([LEON instructions],
4686 gcc_cv_as_sparc_leon,
4689 .register %g2, #scratch
4690 .register %g3, #scratch
4694 casa [[%g2]] 0xb, %g3, %g1],,
4695 [AC_DEFINE(HAVE_AS_LEON, 1,
4696 [Define if your assembler supports LEON instructions.])])
4700 i[34567]86-*-* | x86_64-*-*)
4704 # Full C++ conformance when using a shared libstdc++-v3 requires some
4705 # support from the Cygwin DLL, which in more recent versions exports
4706 # wrappers to aid in interposing and redirecting operators new, delete,
4707 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
4708 # are configuring for a version of Cygwin that exports the wrappers.
4709 if test x$host = x$target && test x$host_cpu = xi686; then
4710 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
4712 # Can't check presence of libc functions during cross-compile, so
4713 # we just have to assume we're building for an up-to-date target.
4714 gcc_ac_cygwin_dll_wrappers=yes
4716 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
4717 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
4718 [Define if you want to generate code by default that assumes that the
4719 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
4722 cygwin* | pe | mingw32*)
4723 # Recent binutils allows the three-operand form of ".comm" on PE. This
4724 # definition is used unconditionally to initialise the default state of
4725 # the target option variable that governs usage of the feature.
4726 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,,
4728 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
4729 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
4730 [Define if your assembler supports specifying the alignment
4731 of objects allocated using the GAS .comm command.])
4732 # Used for DWARF 2 in PE
4733 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
4734 gcc_cv_as_ix86_pe_secrel32,,
4739 [if test x$gcc_cv_ld != x \
4740 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
4741 gcc_cv_as_ix86_pe_secrel32=yes
4744 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
4745 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
4746 # Test if the assembler supports the extended form of the .section
4747 # directive that specifies section alignment. LTO support uses this,
4748 # but normally only after installation, so we warn but don't fail the
4749 # configure if LTO is enabled but the assembler does not support it.
4750 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
4751 -fatal-warnings,[.section lto_test,"dr0"])
4752 if test x$gcc_cv_as_section_has_align != xyes; then
4753 case ",$enable_languages," in
4755 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
4762 darwin2* | darwin19*)
4763 gcc_GAS_CHECK_FEATURE([llvm assembler x86-pad-for-align option],
4764 gcc_cv_as_mllvm_x86_pad_for_align,
4765 [-mllvm -x86-pad-for-align=false], [.text],,
4766 [AC_DEFINE(HAVE_AS_MLLVM_X86_PAD_FOR_ALIGN, 1,
4767 [Define if your Mac OS X assembler supports -mllvm -x86-pad-for-align=false.])])
4771 gcc_GAS_CHECK_FEATURE([-xbrace_comment], gcc_cv_as_ix86_xbrace_comment,
4772 [-xbrace_comment=no], [.text],,
4773 [AC_DEFINE(HAVE_AS_XBRACE_COMMENT_OPTION, 1,
4774 [Define if your assembler supports -xbrace_comment option.])])
4776 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
4777 gcc_cv_as_ix86_filds,,
4778 [filds (%ebp); fists (%ebp)],,
4779 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
4780 [Define if your assembler uses filds and fists mnemonics.])])
4782 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
4783 gcc_cv_as_ix86_fildq,,
4784 [fildq (%ebp); fistpq (%ebp)],,
4785 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
4786 [Define if your assembler uses fildq and fistq mnemonics.])])
4788 gcc_GAS_CHECK_FEATURE([cmov syntax],
4789 gcc_cv_as_ix86_cmov_sun_syntax,,
4790 [cmovl.l %edx, %eax],,
4791 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
4792 [Define if your assembler supports the Sun syntax for cmov.])])
4794 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
4795 gcc_cv_as_ix86_ffreep,,
4797 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
4798 [Define if your assembler supports the ffreep mnemonic.])])
4800 gcc_GAS_CHECK_FEATURE([.quad directive],
4801 gcc_cv_as_ix86_quad,,
4803 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
4804 [Define if your assembler supports the .quad directive.])])
4806 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
4807 gcc_cv_as_ix86_sahf,,
4810 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
4811 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
4813 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
4814 gcc_cv_as_ix86_interunit_movq,,
4818 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
4819 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
4820 [Define if your assembler supports interunit movq mnemonic.])
4822 gcc_GAS_CHECK_FEATURE([hle prefixes],
4823 gcc_cv_as_ix86_hle,,
4824 [lock xacquire cmpxchg %esi, (%ecx)],,
4825 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
4826 [Define if your assembler supports HLE prefixes.])])
4828 gcc_GAS_CHECK_FEATURE([swap suffix],
4829 gcc_cv_as_ix86_swap,,
4830 [movl.s %esp, %ebp],,
4831 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
4832 [Define if your assembler supports the swap suffix.])])
4834 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
4835 gcc_cv_as_ix86_diff_sect_delta,,
4843 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
4844 [Define if your assembler supports the subtraction of symbols in different sections.])])
4846 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
4847 gcc_cv_as_ix86_rep_lock_prefix,,
4853 lock addl %edi, (%eax,%esi)
4854 lock orl $0, (%esp)],,
4855 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
4856 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
4858 gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
4859 gcc_cv_as_ix86_ud2,,
4861 [AC_DEFINE(HAVE_AS_IX86_UD2, 1,
4862 [Define if your assembler supports the 'ud2' mnemonic.])])
4864 # Enforce 32-bit output with gas and gld.
4865 if test x$gas = xyes; then
4866 as_ix86_gas_32_opt="--32"
4868 if echo "$ld_ver" | grep GNU > /dev/null; then
4869 if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then
4870 ld_ix86_gld_32_opt="-melf_i386_sol2"
4872 ld_ix86_gld_32_opt="-melf_i386"
4876 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
4877 gcc_cv_as_ix86_tlsgdplt,
4878 [$as_ix86_gas_32_opt],
4879 [call tls_gd@tlsgdplt],
4880 [if test x$gcc_cv_ld != x \
4881 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4882 gcc_cv_as_ix86_tlsgdplt=yes
4885 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
4886 [Define if your assembler and linker support @tlsgdplt.])])
4889 .section .tdata,"aw'$tls_section_flag'",@progbits
4891 .section .text,"ax",@progbits
4892 call tls_ld@tlsldmplt'
4894 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
4895 gcc_cv_as_ix86_tlsldmplt,
4896 [$as_ix86_gas_32_opt],
4898 [if test x$gcc_cv_ld != x \
4899 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4900 gcc_cv_as_ix86_tlsldmplt=yes
4903 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT,
4904 [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`],
4905 [Define to 1 if your assembler and linker support @tlsldmplt.])
4908 .section .text,"ax",@progbits
4910 .type _start, @function
4912 leal value@tlsldm(%ebx), %eax
4913 call ___tls_get_addr@plt
4915 .section .tdata,"aw'$tls_section_flag'",@progbits
4916 .type value, @object
4918 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc],
4919 gcc_cv_as_ix86_tlsldm,
4920 [$as_ix86_gas_32_opt],
4922 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4923 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then
4924 if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \
4925 || dis conftest 2>/dev/null | grep nop > /dev/null; then
4926 gcc_cv_as_ix86_tlsldm=yes
4930 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM,
4931 [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`],
4932 [Define to 1 if your assembler and linker support @tlsldm.])
4943 gcc_GAS_CHECK_FEATURE([R_386_GOT32X reloc],
4944 gcc_cv_as_ix86_got32x,
4945 [$as_ix86_gas_32_opt],
4947 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4948 && test x$gcc_cv_readelf != x \
4949 && $gcc_cv_readelf --relocs --wide conftest.o 2>&1 \
4950 | grep R_386_GOT32X > /dev/null 2>&1 \
4951 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4952 if $gcc_cv_objdump -dw conftest 2>&1 \
4953 | grep 0xffffff > /dev/null 2>&1; then
4954 gcc_cv_as_ix86_got32x=no
4956 gcc_cv_as_ix86_got32x=yes
4960 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_GOT32X,
4961 [`if test x"$gcc_cv_as_ix86_got32x" = xyes; then echo 1; else echo 0; fi`],
4962 [Define 0/1 if your assembler and linker support @GOT.])
4964 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
4965 gcc_cv_as_ix86_gotoff_in_data,
4966 [$as_ix86_gas_32_opt],
4972 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
4973 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
4974 [Define true if the assembler supports '.long foo@GOTOFF'.])
4977 .section .text,"ax",@progbits
4979 .type _start, @function
4981 leal ld@tlsldm(%ecx), %eax
4982 call *___tls_get_addr@GOT(%ecx)
4983 leal gd@tlsgd(%ecx), %eax
4984 call *___tls_get_addr@GOT(%ecx)
4986 .section .tdata,"aw'$tls_section_flag'",@progbits
4994 gcc_GAS_CHECK_FEATURE([calling ___tls_get_addr via GOT],
4995 gcc_cv_as_ix86_tls_get_addr_via_got,
4996 [$as_ix86_gas_32_opt],
4998 [if test x$gcc_cv_ld != x \
4999 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
5000 gcc_cv_as_ix86_tls_get_addr_via_got=yes
5003 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLS_GET_ADDR_GOT,
5004 [`if test x"$gcc_cv_as_ix86_tls_get_addr_via_got" = xyes; then echo 1; else echo 0; fi`],
5005 [Define 0/1 if your assembler and linker support calling ___tls_get_addr via GOT.])
5009 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
5010 gcc_cv_as_ia64_ltoffx_ldxmov_relocs,,
5012 addl r15 = @ltoffx(x#), gp
5014 ld8.mov r16 = [[r15]], x#
5016 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
5017 [Define if your assembler supports ltoffx and ldxmov relocations.])])
5025 gcc_GAS_CHECK_FEATURE([.machine directive support],
5026 gcc_cv_as_machine_directive,,
5027 [ .machine ppc7400])
5028 if test x$gcc_cv_as_machine_directive != xyes; then
5029 echo "*** This target requires an assembler supporting \".machine\"" >&2
5030 echo you can get it from: https://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
5031 test x$build = x$target && exit 1
5037 *-*-aix*) conftest_s=' .machine "pwr5"
5040 *-*-darwin*) conftest_s=' .text
5042 *) conftest_s=' .machine power4
5047 gcc_GAS_CHECK_FEATURE([mfcr field support],
5048 gcc_cv_as_powerpc_mfcrf,,
5050 [AC_DEFINE(HAVE_AS_MFCRF, 1,
5051 [Define if your assembler supports mfcr field.])])
5054 *-*-aix*) conftest_s=' .csect .text[[PR]]
5056 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
5060 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
5061 *) conftest_s=' .text
5063 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
5066 gcc_GAS_CHECK_FEATURE([rel16 relocs],
5067 gcc_cv_as_powerpc_rel16, -a32,
5069 [AC_DEFINE(HAVE_AS_REL16, 1,
5070 [Define if your assembler supports R_PPC_REL16 relocs.])])
5073 *-*-aix*) conftest_s=' .machine "pwr7"
5076 *) conftest_s=' .machine power7
5081 gcc_GAS_CHECK_FEATURE([vector-scalar support],
5082 gcc_cv_as_powerpc_vsx, -a32,
5084 [AC_DEFINE(HAVE_AS_VSX, 1,
5085 [Define if your assembler supports VSX instructions.])])
5087 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5088 gcc_cv_as_powerpc_gnu_attribute,,
5089 [.gnu_attribute 4,1],,
5090 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5091 [Define if your assembler supports .gnu_attribute.])])
5093 gcc_GAS_CHECK_FEATURE([prologue entry point marker support],
5094 gcc_cv_as_powerpc_entry_markers,-a64 --fatal-warnings,
5095 [ .reloc .,R_PPC64_ENTRY; nop],,
5096 [AC_DEFINE(HAVE_AS_ENTRY_MARKERS, 1,
5097 [Define if your assembler supports the R_PPC64_ENTRY relocation.])])
5099 gcc_GAS_CHECK_FEATURE([plt sequence marker support],
5100 gcc_cv_as_powerpc_pltseq_markers,-a32 --fatal-warnings,
5101 [ .reloc .,R_PPC_PLTSEQ; nop],,
5102 [AC_DEFINE(HAVE_AS_PLTSEQ, 1,
5103 [Define if your assembler supports R_PPC*_PLTSEQ relocations.])])
5107 gcc_GAS_CHECK_FEATURE([AIX .ref support],
5109 [ .csect stuff[[rw]]
5115 [AC_DEFINE(HAVE_AS_REF, 1,
5116 [Define if your assembler supports .ref])])
5118 gcc_GAS_CHECK_FEATURE([AIX DWARF location lists section support],
5119 gcc_cv_as_aix_dwloc,,
5124 [AC_DEFINE(HAVE_XCOFF_DWARF_EXTRAS, 1,
5125 [Define if your assembler supports AIX debug frame section label reference.])])
5131 gcc_GAS_CHECK_FEATURE([explicit relocation support],
5132 gcc_cv_as_mips_explicit_relocs,,
5133 [ lw $4,%gp_rel(foo)($4)],,
5134 [if test x$target_cpu_default = x
5135 then target_cpu_default=MASK_EXPLICIT_RELOCS
5136 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
5139 gcc_GAS_CHECK_FEATURE([-mno-shared support],
5140 gcc_cv_as_mips_no_shared,[-mno-shared], [nop],,
5141 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
5142 [Define if the assembler understands -mno-shared.])])
5144 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5145 gcc_cv_as_mips_gnu_attribute,,
5146 [.gnu_attribute 4,1],,
5147 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5148 [Define if your assembler supports .gnu_attribute.])])
5150 gcc_GAS_CHECK_FEATURE([.module support],
5151 gcc_cv_as_mips_dot_module,[-32],
5154 [AC_DEFINE(HAVE_AS_DOT_MODULE, 1,
5155 [Define if your assembler supports .module.])])
5156 if test x$gcc_cv_as_mips_dot_module = xno \
5157 && test x$with_fp_32 != x; then
5159 [Requesting --with-fp-32= requires assembler support for .module.])
5162 gcc_GAS_CHECK_FEATURE([.micromips support],
5163 gcc_cv_as_micromips_support,[--fatal-warnings],
5165 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
5166 [Define if your assembler supports the .set micromips directive])])
5168 gcc_GAS_CHECK_FEATURE([.dtprelword support],
5169 gcc_cv_as_mips_dtprelword,,
5170 [.section .tdata,"awT",@progbits
5174 .dtprelword x+0x8000],,
5175 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
5176 [Define if your assembler supports .dtprelword.])])
5178 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
5179 gcc_cv_as_mips_dspr1_mult,,
5189 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
5190 [Define if your assembler supports DSPR1 mult.])])
5192 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
5193 gcc_cv_as_ld_jalr_reloc=no
5194 if test $gcc_cv_as_mips_explicit_relocs = yes; then
5195 if test $in_tree_ld = yes ; then
5196 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
5197 && test $in_tree_ld_is_elf = yes; then
5198 gcc_cv_as_ld_jalr_reloc=yes
5200 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
5201 echo ' .ent x' > conftest.s
5202 echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s
5203 echo ' lw $25,%call16(y)($28)' >> conftest.s
5204 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
5205 echo '1: jalr $25' >> conftest.s
5206 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
5207 echo '1: jalr $25' >> conftest.s
5208 echo ' .end x' >> conftest.s
5209 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
5210 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
5211 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
5212 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
5213 gcc_cv_as_ld_jalr_reloc=yes
5219 if test $gcc_cv_as_ld_jalr_reloc = yes; then
5220 if test x$target_cpu_default = x; then
5221 target_cpu_default=MASK_RELAX_PIC_CALLS
5223 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
5226 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
5228 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
5229 [gcc_cv_ld_mips_personality_relaxation],
5230 [gcc_cv_ld_mips_personality_relaxation=no
5231 if test $in_tree_ld = yes ; then
5232 if test "$gcc_cv_gld_major_version" -eq 2 \
5233 -a "$gcc_cv_gld_minor_version" -ge 21 \
5234 -o "$gcc_cv_gld_major_version" -gt 2; then
5235 gcc_cv_ld_mips_personality_relaxation=yes
5237 elif test x$gcc_cv_as != x \
5238 -a x$gcc_cv_ld != x \
5239 -a x$gcc_cv_readelf != x ; then
5240 cat > conftest.s <<EOF
5242 .cfi_personality 0x80,indirect_ptr
5249 .section .data,"aw",@progbits
5253 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
5254 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
5255 if $gcc_cv_readelf -d conftest 2>&1 \
5256 | grep TEXTREL > /dev/null 2>&1; then
5258 elif $gcc_cv_readelf --relocs conftest 2>&1 \
5259 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
5262 gcc_cv_ld_mips_personality_relaxation=yes
5266 rm -f conftest.s conftest.o conftest])
5267 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
5268 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
5269 [Define if your linker can relax absolute .eh_frame personality
5270 pointers into PC-relative form.])
5273 gcc_GAS_CHECK_FEATURE([-mnan= support],
5276 [AC_DEFINE(HAVE_AS_NAN, 1,
5277 [Define if the assembler understands -mnan=.])])
5278 if test x$gcc_cv_as_mips_nan = xno \
5279 && test x$with_nan != x; then
5281 [Requesting --with-nan= requires assembler support for -mnan=])
5285 # Earlier GAS versions generically support .gnu_attribute, but the
5286 # msp430 assembler will not do anything with it.
5287 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5288 gcc_cv_as_msp430_gnu_attribute,,
5289 [.gnu_attribute 4,1],,
5290 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5291 [Define if your assembler supports .gnu_attribute.])])
5292 gcc_GAS_CHECK_FEATURE([.mspabi_attribute support],
5293 gcc_cv_as_msp430_mspabi_attribute,,
5294 [.mspabi_attribute 4,2],,
5295 [AC_DEFINE(HAVE_AS_MSPABI_ATTRIBUTE, 1,
5296 [Define if your assembler supports .mspabi_attribute.])])
5297 if test x$enable_newlib_nano_formatted_io = xyes; then
5298 AC_DEFINE(HAVE_NEWLIB_NANO_FORMATTED_IO, 1, [Define if GCC has been
5299 configured with --enable-newlib-nano-formatted-io.])
5303 # Versions 2.33 and earlier lacked support for the %gotoff relocation
5304 # syntax that is documented in the ABI specification.
5305 gcc_GAS_CHECK_FEATURE([support for %gotoff relocations in constant data],
5306 gcc_cv_as_nios2_gotoff_relocation,,
5309 .long %gotoff(foo)],,
5310 [AC_DEFINE(HAVE_AS_NIOS2_GOTOFF_RELOCATION, 1,
5311 [Define if your assembler supports %gotoff relocation syntax.])])
5314 gcc_GAS_CHECK_FEATURE([.attribute support],
5315 gcc_cv_as_riscv_attribute,,
5316 [.attribute stack_align,4],,
5317 [AC_DEFINE(HAVE_AS_RISCV_ATTRIBUTE, 1,
5318 [Define if your assembler supports .attribute.])])
5319 gcc_GAS_CHECK_FEATURE([-misa-spec= support],
5320 gcc_cv_as_riscv_isa_spec,
5322 [AC_DEFINE(HAVE_AS_MISA_SPEC, 1,
5323 [Define if the assembler understands -misa-spec=.])])
5324 gcc_GAS_CHECK_FEATURE([-march=rv32i_zifencei support],
5325 gcc_cv_as_riscv_march_zifencei,
5326 [-march=rv32i_zifencei2p0],,,
5327 [AC_DEFINE(HAVE_AS_MARCH_ZIFENCEI, 1,
5328 [Define if the assembler understands -march=rv*_zifencei.])])
5331 gcc_GAS_CHECK_FEATURE([.dtprelword support],
5332 gcc_cv_as_loongarch_dtprelword, [2,18,0],,
5333 [.section .tdata,"awT",@progbits
5337 .dtprelword x+0x8000],,
5338 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
5339 [Define if your assembler supports .dtprelword.])])
5340 gcc_GAS_CHECK_FEATURE([explicit relocation support],
5341 gcc_cv_as_loongarch_explicit_relocs,,
5342 [a:pcalau12i $t0,%pc_hi20(a)],,
5343 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
5344 [Define if your assembler supports explicit relocation.])])
5345 gcc_GAS_CHECK_FEATURE([eh_frame pcrel encoding support],
5346 gcc_cv_as_loongarch_eh_frame_pcrel_encoding_support,,
5348 .cfi_personality 0x9b,a
5351 [AC_DEFINE(HAVE_AS_EH_FRAME_PCREL_ENCODING_SUPPORT, 1,
5352 [Define if your assembler supports eh_frame pcrel encoding.])])
5355 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5356 gcc_cv_as_s390_gnu_attribute,,
5357 [.gnu_attribute 8,1],,
5358 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5359 [Define if your assembler supports .gnu_attribute.])])
5360 gcc_GAS_CHECK_FEATURE([.machine and .machinemode support],
5361 gcc_cv_as_s390_machine_machinemode,,
5366 [AC_DEFINE(HAVE_AS_MACHINE_MACHINEMODE, 1,
5367 [Define if your assembler supports .machine and .machinemode.])])
5368 gcc_GAS_CHECK_FEATURE([architecture modifiers support],
5369 gcc_cv_as_s390_architecture_modifiers,,
5370 [ .machine z13+vx ],,
5371 [AC_DEFINE(HAVE_AS_ARCHITECTURE_MODIFIERS, 1,
5372 [Define if your assembler supports architecture modifiers.])])
5373 gcc_GAS_CHECK_FEATURE([vector load/store alignment hints],
5374 gcc_cv_as_s390_vector_loadstore_alignment_hints,,
5375 [ vl %v24,0(%r15),3 ],,
5376 [AC_DEFINE(HAVE_AS_VECTOR_LOADSTORE_ALIGNMENT_HINTS, 1,
5377 [Define if your assembler supports vl/vst/vlm/vstm with an optional alignment hint argument.])])
5378 gcc_GAS_CHECK_FEATURE([vector load/store alignment hints on z13],
5379 gcc_cv_as_s390_vector_loadstore_alignment_hints_on_z13, [-mzarch -march=z13],
5380 [ vl %v24,0(%r15),3 ],,
5381 [AC_DEFINE(HAVE_AS_VECTOR_LOADSTORE_ALIGNMENT_HINTS_ON_Z13, 1,
5382 [Define if your assembler supports vl/vst/vlm/vstm with an optional alignment hint argument on z13.])])
5387 # Mips, LoongArch and HP-UX need the GNU assembler.
5388 # Linux on IA64 might be able to use the Intel assembler.
5391 mips*-*-* | loongarch*-*-* | *-*-hpux* )
5392 if test x$gas_flag = xyes \
5393 || test x"$host" != x"$build" \
5394 || test ! -x "$gcc_cv_as" \
5395 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
5398 echo "*** This configuration requires the GNU assembler" >&2
5404 # AMD GCN needs the LLVM assembler and linker.
5405 # Test that LLVM is at least 13.0.1.
5408 AC_MSG_CHECKING(llvm assembler version)
5409 gcc_cv_as_version="unknown"
5410 if test x$gcc_cv_as != x; then
5411 gcc_cv_as_version=`$gcc_cv_as --version 2>&1 | sed -ne '/version/s/.* \([[0-9]]\)/\1/p' || echo error`
5412 case "$gcc_cv_as_version" in
5413 13.0.[[1-9]]*) ;; # 13.0.1+
5414 13.[[1-9]]*) ;; # 13.1+
5415 1[[4-9]]*) ;; # 14..19
5416 [[2-9]][[0-9]]*) ;; # 20..99
5417 [[1-9]][[0-9]][[0-9]]*) ;; # 100+
5418 error) AC_MSG_ERROR([cannot determine LLVM version]) ;;
5419 *) AC_MSG_ERROR([LLVM 13.0.1 or later is required (found LLVM $gcc_cv_as_version)]) ;;
5422 AC_MSG_RESULT([$gcc_cv_as_version, ok])
5428 gcc_GAS_CHECK_FEATURE([assembler for arm accepts context-specific architecture extensions],
5429 gcc_cv_as_arm_option_extensions,
5430 [-march=armv8.1-m.main+mve],
5435 [AC_DEFINE(HAVE_GAS_ARM_EXTENDED_ARCH, 1,
5436 [Define if your Arm assembler permits context-specific feature extensions.])])
5439 # ??? Not all targets support dwarf2 debug_line, even within a version
5440 # of gas. Moreover, we need to emit a valid instruction to trigger any
5441 # info to the output file. So, as supported targets are added to gas 2.11,
5442 # add some instruction here to (also) show we expect this might work.
5443 # ??? Once 2.11 is released, probably need to add first known working
5444 # version to the per-target configury.
5446 aarch64 | alpha | arc | arm | avr | bfin | cris | csky | i386 | loongarch | m32c \
5447 | m68k | microblaze | mips | nds32 | nios2 | pa | riscv | rs6000 | score | sparc \
5448 | visium | xstormy16 | xtensa)
5458 if test x"$insn" != x; then
5460 .file 1 \"conftest.s\"
5463 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
5464 gcc_cv_as_dwarf2_debug_line,,
5466 [if test x$gcc_cv_objdump != x \
5467 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
5468 | grep debug_line > /dev/null 2>&1; then
5469 gcc_cv_as_dwarf2_debug_line=yes
5470 elif test x$gcc_cv_otool != x \
5471 && $gcc_cv_otool -l conftest.o 2> /dev/null \
5472 | grep debug_line > /dev/null 2>&1; then
5473 gcc_cv_as_dwarf2_debug_line=yes
5476 # The .debug_line file table must be in the exact order that
5477 # we specified the files, since these indices are also used
5478 # by DW_AT_decl_file. Approximate this test by testing if
5479 # the assembler bitches if the same index is assigned twice.
5480 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
5481 gcc_cv_as_dwarf2_file_buggy,,
5485 if test $gcc_cv_as_dwarf2_debug_line = yes \
5486 && test $gcc_cv_as_dwarf2_file_buggy = no; then
5487 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
5488 [Define if your assembler supports dwarf2 .file/.loc directives,
5489 and preserves file table indices exactly as given.])
5491 if test $gcc_cv_as_leb128 = yes; then
5493 .file 1 \"conftest.s\"
5494 .loc 1 3 0 view .LVU1
5500 gcc_GAS_CHECK_FEATURE([dwarf2 debug_view support],
5501 gcc_cv_as_dwarf2_debug_view,,
5503 [AC_DEFINE(HAVE_AS_DWARF2_DEBUG_VIEW, 1,
5504 [Define if your assembler supports views in dwarf2 .loc directives.])])
5508 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
5509 gcc_cv_as_gdwarf2_flag,
5510 [--gdwarf2], [$insn],,
5511 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
5512 [Define if your assembler supports the --gdwarf2 option.])])
5514 gcc_GAS_CHECK_FEATURE([--gdwarf-5 option],
5515 gcc_cv_as_gdwarf_5_flag,
5516 [--gdwarf-5], [$insn],
5517 [if test x$gcc_cv_objdump != x \
5518 && $gcc_cv_objdump -Wi conftest.o 2>&1 \
5519 | grep DW_TAG_compile_unit > /dev/null 2>&1; then
5520 gcc_cv_as_gdwarf_5_flag=yes;
5521 fi],[AC_DEFINE(HAVE_AS_GDWARF_5_DEBUG_FLAG, 1,
5522 [Define if your assembler supports the --gdwarf-5 option.])])
5525 win32 | pe | cygwin* | mingw32*)
5526 section_flags=\"dr\"
5527 function_type=".def foo; .scl 2; .type 32; .endef"
5530 section_flags=\"\",%progbits
5531 function_type=".type foo, %function"
5532 function_size=".size foo, .-foo";;
5534 dwarf4_debug_info_size=0x46
5535 dwarf4_high_pc_form=7
5536 dwarf4_debug_aranges_size=0x2c
5538 for dwarf4_addr_size in 8 4; do
5554 .section .debug_info,$section_flags
5556 .4byte $dwarf4_debug_info_size
5558 .4byte .Ldebug_abbrev0
5559 .byte 0x$dwarf4_addr_size
5561 .ascii \"GNU C17\\0\"
5565 .${dwarf4_addr_size}byte .Ltext0
5566 .${dwarf4_addr_size}byte .Letext0-.Ltext0
5567 .4byte .Ldebug_line0
5573 .${dwarf4_addr_size}byte .LFB0
5574 .${dwarf4_addr_size}byte .LFE0-.LFB0
5578 .section .debug_abbrev,$section_flags
5594 .byte 0x$dwarf4_high_pc_form
5615 .byte 0x$dwarf4_high_pc_form
5621 .section .debug_aranges,$section_flags
5622 .4byte $dwarf4_debug_aranges_size
5624 .4byte .Ldebug_info0
5629 .${dwarf4_addr_size}byte .Ltext0
5630 .${dwarf4_addr_size}byte .Letext0-.Ltext0
5631 .${dwarf4_addr_size}byte 0
5632 .${dwarf4_addr_size}byte 0
5633 .section .debug_line,$section_flags
5635 .4byte .LELT0-.LSLT0
5638 .4byte .LELTP0-.LASLTP0
5666 .byte 0x$dwarf4_line_sz
5668 .${dwarf4_addr_size}byte .LM1
5673 .byte 0x$dwarf4_line_sz
5675 .${dwarf4_addr_size}byte .LM2
5680 .byte 0x$dwarf4_line_sz
5682 .${dwarf4_addr_size}byte .Letext0
5687 .section .debug_str,$section_flags
5691 if test $dwarf4_addr_size = 4; then
5692 gcc_GAS_CHECK_FEATURE([assembly of compiler generated 32-bit .debug_line],
5693 gcc_cv_as_debug_line_32_flag,,
5695 [dwarf4_success=yes])
5697 gcc_GAS_CHECK_FEATURE([assembly of compiler generated 64-bit .debug_line],
5698 gcc_cv_as_debug_line_64_flag,,
5700 [dwarf4_success=yes])
5702 if test $dwarf4_success = yes; then
5704 gcc_GAS_CHECK_FEATURE([--gdwarf-4 not refusing compiler generated .debug_line],
5705 gcc_cv_as_dwarf_4_debug_line_flag,
5706 [--gdwarf-4], [$conftest_s],,
5707 [dwarf4_success=yes])
5710 dwarf4_debug_info_size=0x36
5711 dwarf4_high_pc_form=6
5712 dwarf4_debug_aranges_size=0x1c
5716 if test $dwarf4_success = yes; then
5734 gcc_GAS_CHECK_FEATURE([--gdwarf-4 with the APP marker],
5735 gcc_cv_as_dwarf_4_app_flag,
5736 [--gdwarf-4], [$conftest_s],, [dwarf4_success=yes])
5739 if test $dwarf4_success = yes; then
5749 gcc_GAS_CHECK_FEATURE([working --gdwarf-4/--gdwarf-5 for all sources],
5750 gcc_cv_as_working_gdwarf_n_flag,
5754 if test x$gcc_cv_objdump != x \
5755 && $gcc_cv_objdump -W conftest.o 2>&1 \
5756 | grep conftest.s > /dev/null 2>&1; then
5757 gcc_cv_as_working_gdwarf_n_flag=no
5759 gcc_cv_as_working_gdwarf_n_flag=yes
5761 changequote([,])dnl])
5762 if test $gcc_cv_as_working_gdwarf_n_flag = yes; then
5763 AC_DEFINE(HAVE_AS_WORKING_DWARF_N_FLAG, 1,
5764 [Define if your assembler supports --gdwarf-4/--gdwarf-5 even with
5765 compiler generated .debug_line.])
5769 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
5770 gcc_cv_as_debug_prefix_map_flag,
5771 [--debug-prefix-map /a=/b], [$insn],,
5772 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
5773 [Define if your assembler supports the --debug-prefix-map option.])])
5776 gcc_GAS_CHECK_FEATURE([compressed debug sections],
5777 gcc_cv_as_compress_debug,,,
5778 [# gas compiled without zlib cannot compress debug sections and warns
5779 # about it, but still exits successfully. So check for this, too.
5780 if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null
5782 gcc_cv_as_compress_debug=0
5783 elif $gcc_cv_as --compress-debug-sections=zlib -o conftest.o conftest.s > /dev/null 2>&1
5785 gcc_cv_as_compress_debug=1
5786 gcc_cv_as_compress_debug_option="--compress-debug-sections"
5787 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
5788 # Since binutils 2.40, gas supports --compress-debug-sections=zstd.
5789 if $gcc_cv_as --compress-debug-sections=zstd -o conftest.o conftest.s > /dev/null 2>&1
5791 gcc_cv_as_compress_debug=2
5794 gcc_cv_as_compress_debug=0
5796 AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug,
5797 [Define to the level of your assembler's compressed debug section support.])
5798 AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option",
5799 [Define to the assembler option to enable compressed debug sections.])
5800 AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option",
5801 [Define to the assembler option to disable compressed debug sections.])
5803 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,,
5805 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
5806 [Define if your assembler supports .lcomm with an alignment field.])])
5808 if test x$with_sysroot = x && test x$host = x$target \
5809 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
5810 && test "$prefix" != "NONE"; then
5811 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
5812 [Define to PREFIX/include if cpp should also search that directory.])
5815 # Determine the version of glibc, if any, used on the target.
5816 AC_MSG_CHECKING([for target glibc version])
5817 AC_ARG_WITH([glibc-version],
5818 [AS_HELP_STRING([--with-glibc-version=M.N],
5819 [assume GCC used with glibc version M.N or later])], [
5820 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
5821 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
5822 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
5824 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
5826 glibc_version_major=0
5827 glibc_version_minor=0
5828 [if test -f $target_header_dir/features.h \
5829 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
5830 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
5831 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
5832 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
5834 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
5835 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MAJOR], [$glibc_version_major],
5836 [GNU C Library major version number used on the target, or 0.])
5837 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MINOR], [$glibc_version_minor],
5838 [GNU C Library minor version number used on the target, or 0.])
5840 AC_ARG_ENABLE(gnu-unique-object,
5841 [AS_HELP_STRING([--enable-gnu-unique-object],
5842 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
5843 [case $enable_gnu_unique_object in
5845 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
5846 Valid choices are 'yes' and 'no'.]) ;;
5848 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,,
5849 [.type foo, '$target_type_format_char'gnu_unique_object],,
5850 # We need to unquote above to to use the definition from config.gcc.
5851 # Also check for ld.so support, i.e. glibc 2.11 or higher.
5852 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
5854 if test x$enable_gnu_unique_object = xyes; then
5855 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
5856 [Define if your assembler supports @gnu_unique_object.])
5859 AC_CACHE_CHECK([assembler for tolerance to line number 0],
5860 [gcc_cv_as_line_zero],
5861 [gcc_cv_as_line_zero=no
5862 if test "x$gcc_cv_as" != x; then
5863 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
5864 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
5865 test "x`cat conftest.out`" = x
5867 gcc_cv_as_line_zero=yes
5869 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
5870 cat conftest.s >&AS_MESSAGE_LOG_FD
5871 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
5872 cat conftest.out >&AS_MESSAGE_LOG_FD
5874 rm -f conftest.o conftest.s conftest.out
5876 if test "x$gcc_cv_as_line_zero" = xyes; then
5877 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
5878 [Define if the assembler won't complain about a line such as # 0 "" 2.])
5881 AC_MSG_CHECKING(support for thin archives)
5882 thin_archive_support=no
5883 echo 'int main (void) { return 0; }' > conftest.c
5884 if ($AR --version | sed 1q | grep "GNU ar" \
5885 && $CC $CFLAGS -c conftest.c \
5886 && $AR rcT conftest.a conftest.o \
5887 && $CC $CFLAGS $LDFLAGS -o conftest conftest.a) >/dev/null 2>&1; then
5888 thin_archive_support=yes
5890 rm -f conftest.c conftest.o conftest.a conftest
5891 AC_MSG_RESULT($thin_archive_support)
5892 AC_SUBST(thin_archive_support)
5894 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
5895 gcc_cv_ld_eh_frame_hdr=no
5896 if test $in_tree_ld = yes ; then
5897 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
5898 && test $in_tree_ld_is_elf = yes; then
5899 gcc_cv_ld_eh_frame_hdr=yes
5901 elif test x$gcc_cv_ld != x; then
5902 if echo "$ld_ver" | grep GNU > /dev/null; then
5903 # Check if linker supports --eh-frame-hdr option
5904 if $gcc_cv_ld --help 2>&1 | grep eh-frame-hdr > /dev/null; then
5905 gcc_cv_ld_eh_frame_hdr=yes
5910 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
5911 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
5912 gcc_cv_ld_eh_frame_hdr=yes
5918 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
5919 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
5920 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
5921 [Define if your linker supports .eh_frame_hdr.])
5923 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
5925 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
5926 gcc_cv_ld_eh_frame_ciev3=no
5927 if test $in_tree_ld = yes ; then
5928 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5929 && test $in_tree_ld_is_elf = yes; then
5930 gcc_cv_ld_eh_frame_ciev3=yes
5932 elif test x$gcc_cv_ld != x; then
5933 if echo "$ld_ver" | grep GNU > /dev/null; then
5934 gcc_cv_ld_eh_frame_ciev3=yes
5935 if test 0"$ld_date" -lt 20040513; then
5936 if test -n "$ld_date"; then
5937 # If there was date string, but was earlier than 2004-05-13, fail
5938 gcc_cv_ld_eh_frame_ciev3=no
5939 elif test "$ld_vers_major" -lt 2; then
5940 gcc_cv_ld_eh_frame_ciev3=no
5941 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
5942 gcc_cv_ld_eh_frame_ciev3=no
5948 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
5949 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
5950 gcc_cv_ld_eh_frame_ciev3=yes
5956 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
5957 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
5958 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
5959 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
5961 AC_MSG_CHECKING(linker position independent executable support)
5963 if test $in_tree_ld = yes ; then
5965 # Full PIE support on Solaris was only introduced in gld 2.26.
5966 *-*-solaris2*) gcc_gld_pie_min_version=26 ;;
5967 *) gcc_gld_pie_min_version=15 ;;
5969 if test "$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 \
5970 && test $in_tree_ld_is_elf = yes; then
5973 elif test x$gcc_cv_ld != x; then
5974 # Check if linker supports -pie option
5975 if $gcc_cv_ld --help 2>&1 | grep -- -pie > /dev/null; then
5979 if echo "$ld_ver" | grep GNU > /dev/null \
5980 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
5987 *-*-solaris2.1[[1-9]]*)
5988 # Solaris 11.3 added PIE support.
5989 if $gcc_cv_ld -z help 2>&1 | grep -- type.*pie > /dev/null; then
5996 if test x"$gcc_cv_ld_pie" = xyes; then
5997 AC_DEFINE(HAVE_LD_PIE, 1,
5998 [Define if your linker supports PIE option.])
6000 AC_MSG_RESULT($gcc_cv_ld_pie)
6002 AC_MSG_CHECKING(linker PIE support with copy reloc)
6003 gcc_cv_ld_pie_copyreloc=no
6004 if test $gcc_cv_ld_pie = yes ; then
6005 if test $in_tree_ld = yes ; then
6006 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6007 gcc_cv_ld_pie_copyreloc=yes
6009 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6010 # Check if linker supports -pie option with copy reloc
6012 i?86-*-linux* | x86_64-*-linux*)
6013 cat > conftest1.s <<EOF
6016 .type a_glob, @object
6021 cat > conftest2.s <<EOF
6024 .type main, @function
6026 movl %eax, a_glob(%rip)
6029 .section .data.rel,"aw",@progbits
6034 if $gcc_cv_as --64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
6035 && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \
6036 && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
6037 && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then
6038 gcc_cv_ld_pie_copyreloc=yes
6040 rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s
6045 AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC,
6046 [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`],
6047 [Define 0/1 if your linker supports -pie option with copy reloc.])
6048 AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc)
6050 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
6051 gcc_cv_ld_eh_gc_sections=no
6052 if test $in_tree_ld = yes ; then
6053 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
6054 && test $in_tree_ld_is_elf = yes; then
6055 gcc_cv_ld_eh_gc_sections=yes
6057 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
6058 cat > conftest.s <<EOF
6061 .type _start, @function
6064 .size _start, .-_start
6065 .section .text.foo,"ax",@progbits
6066 .type foo, @function
6070 .section .gcc_except_table.foo,"a",@progbits
6073 .section .eh_frame,"a",@progbits
6076 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
6077 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
6078 | grep "gc-sections option ignored" > /dev/null; then
6079 gcc_cv_ld_eh_gc_sections=no
6080 elif $gcc_cv_objdump -h conftest 2> /dev/null \
6081 | grep gcc_except_table > /dev/null; then
6082 gcc_cv_ld_eh_gc_sections=yes
6083 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
6084 if test x$gcc_cv_as_comdat_group != xyes; then
6085 gcc_cv_ld_eh_gc_sections=no
6086 cat > conftest.s <<EOF
6089 .type _start, @function
6092 .size _start, .-_start
6093 .section .gnu.linkonce.t.foo,"ax",@progbits
6094 .type foo, @function
6098 .section .gcc_except_table.foo,"a",@progbits
6101 .section .eh_frame,"a",@progbits
6104 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
6105 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
6106 | grep "gc-sections option ignored" > /dev/null; then
6107 gcc_cv_ld_eh_gc_sections=no
6108 elif $gcc_cv_objdump -h conftest 2> /dev/null \
6109 | grep gcc_except_table > /dev/null; then
6110 gcc_cv_ld_eh_gc_sections=yes
6116 rm -f conftest.s conftest.o conftest
6120 # ??? This apparently exposes a binutils bug with PC-relative relocations.
6121 gcc_cv_ld_eh_gc_sections=no
6124 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
6125 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
6126 [Define if your linker supports garbage collection of
6127 sections in presence of EH frames.])
6129 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
6131 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
6132 gcc_cv_ld_eh_gc_sections_bug=no
6133 if test $in_tree_ld = yes ; then
6134 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
6135 && test $in_tree_ld_is_elf = yes; then
6136 gcc_cv_ld_eh_gc_sections_bug=yes
6138 elif test x$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
6139 gcc_cv_ld_eh_gc_sections_bug=yes
6140 cat > conftest.s <<EOF
6143 .type _start, @function
6146 .size _start, .-_start
6147 .section .text.startup.foo,"ax",@progbits
6148 .type foo, @function
6152 .section .gcc_except_table.foo,"a",@progbits
6155 .section .eh_frame,"a",@progbits
6158 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
6159 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
6160 | grep "gc-sections option ignored" > /dev/null; then
6162 elif $gcc_cv_objdump -h conftest 2> /dev/null \
6163 | grep gcc_except_table > /dev/null; then
6164 gcc_cv_ld_eh_gc_sections_bug=no
6167 rm -f conftest.s conftest.o conftest
6169 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
6170 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
6171 [Define if your linker has buggy garbage collection of
6172 sections support when .text.startup.foo like sections are used.])
6174 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
6176 AC_MSG_CHECKING(linker for compressed debug sections)
6177 # GNU ld/gold support --compressed-debug-sections=zlib since binutils 2.26.
6178 if $gcc_cv_ld --help 2>&1 | grep -- '--compress-debug-sections.*\<zlib-gabi\>' > /dev/null; then
6179 gcc_cv_ld_compress_debug=1
6180 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
6181 # Detect zstd debug section compression support
6182 if $gcc_cv_ld --help 2>&1 | grep -- '--compress-debug-sections.*\<zstd\>' > /dev/null; then
6183 gcc_cv_ld_compress_debug=2
6189 # Introduced in Solaris 11.2.
6190 if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then
6191 gcc_cv_ld_compress_debug=1
6192 gcc_cv_ld_compress_debug_option="-z compress-sections"
6194 gcc_cv_ld_compress_debug=0
6198 # Assume linkers other than GNU ld don't support compessed debug
6200 gcc_cv_ld_compress_debug=0
6205 AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug,
6206 [Define to the level of your linker's compressed debug section support.])
6207 AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option",
6208 [Define to the linker option to enable compressed debug sections.])
6209 AC_MSG_RESULT($gcc_cv_ld_compress_debug)
6211 if test x"$ld64_flag" = x"yes"; then
6213 # Set defaults for possibly untestable items.
6214 gcc_cv_ld64_export_dynamic=0
6215 gcc_cv_ld64_platform_version=0
6217 if test "$build" = "$host"; then
6223 # On Darwin, because of FAT library support, it is often possible to execute
6224 # exes from compatible archs even when the host differs from the build system.
6225 case "$build","$host" in
6226 x86_64-*-darwin*,i?86-*-darwin* | powerpc64*-*-darwin*,powerpc*-*-darwin*)
6231 # If the configurer specified a minimum ld64 version to be supported, then use
6232 # that to determine feature support.
6233 if test x"${gcc_cv_ld64_version}" != x; then
6234 AC_MSG_CHECKING(ld64 specified version)
6235 gcc_cv_ld64_major=`echo "$gcc_cv_ld64_version" | sed -e 's/\..*//'`
6236 AC_MSG_RESULT($gcc_cv_ld64_major)
6237 if test "$gcc_cv_ld64_major" -ge 236; then
6238 gcc_cv_ld64_export_dynamic=1
6240 if test "$gcc_cv_ld64_major" -ge 512; then
6241 gcc_cv_ld64_platform_version=1
6243 elif test -x "$gcc_cv_ld" -a "$darwin_try_test" -eq 1; then
6244 # If the version was not specified, try to find it.
6245 AC_MSG_CHECKING(linker version)
6246 if test x"${gcc_cv_ld64_version}" = x; then
6247 gcc_cv_ld64_version=`$gcc_cv_ld -v 2>&1 | grep ld64 | sed s/.*ld64-// | awk '{print $1}'`
6249 AC_MSG_RESULT($gcc_cv_ld64_version)
6251 AC_MSG_CHECKING(linker for -export_dynamic support)
6252 gcc_cv_ld64_export_dynamic=1
6253 if $gcc_cv_ld -export_dynamic < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then
6254 gcc_cv_ld64_export_dynamic=0
6256 AC_MSG_RESULT($gcc_cv_ld64_export_dynamic)
6258 AC_MSG_CHECKING(linker for -platform_version support)
6259 gcc_cv_ld64_platform_version=1
6260 if $gcc_cv_ld -platform_version macos 10.5 0.0 < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then
6261 gcc_cv_ld64_platform_version=0
6263 AC_MSG_RESULT($gcc_cv_ld64_platform_version)
6266 if test x"${gcc_cv_ld64_version}" != x; then
6267 AC_DEFINE_UNQUOTED(LD64_VERSION, "${gcc_cv_ld64_version}",
6268 [Define to ld64 version.])
6271 AC_DEFINE_UNQUOTED(LD64_HAS_EXPORT_DYNAMIC, $gcc_cv_ld64_export_dynamic,
6272 [Define to 1 if ld64 supports '-export_dynamic'.])
6274 AC_DEFINE_UNQUOTED(LD64_HAS_PLATFORM_VERSION, $gcc_cv_ld64_platform_version,
6275 [Define to 1 if ld64 supports '-platform_version'.])
6278 if test x"$dsymutil_flag" = x"yes"; then
6280 # If the user specified a dsymutil path, then we will already have the
6281 # version string, otherwise, pick it up.
6282 if test x"$gcc_cv_dsymutil" = x; then
6283 AC_MSG_WARN([dsymutil is a required tool for this system, but not found])
6284 dsymutil_vers="tool unspecified"
6285 elif test x"$dsymutil_vers" = x; then
6286 dsymutil_vers=`$gcc_cv_dsymutil -v /dev/null 2>&1`
6289 dsymutil_temp=`echo $dsymutil_vers | sed 1q`
6290 AC_MSG_CHECKING(dsymutil version "$dsymutil_temp")
6291 if echo $dsymutil_temp | grep dwarfutils- > /dev/null; then
6292 dsymutil_kind=DWARFUTILS
6293 dsymutil_vers=`echo $dsymutil_temp | sed 's/.*dwarfutils-\([[0-9\.]]*\).*/\1/'`
6294 elif echo $dsymutil_temp | grep clang- > /dev/null; then
6296 dsymutil_vers=`echo $dsymutil_temp | sed 's/.*clang-\([[0-9\.]]*\).*/\1/'`
6297 elif echo $dsymutil_temp | grep 'LLVM version ' > /dev/null; then
6299 dsymutil_vers=`echo $dsymutil_temp | sed 's/.*LLVM\ version\ \([[0-9\.]]*\).*/\1/'`
6301 dsymutil_kind=UNKNOWN
6304 dsymutil_major=`expr "$dsymutil_vers" : '\([[0-9]]*\)'`
6305 dsymutil_minor=`expr "$dsymutil_vers" : '[[0-9]]*\.\([[0-9]]*\)'`
6306 dsymutil_tiny=`expr "$dsymutil_vers" : '[[0-9]]*\.[[0-9]]*\.\([[0-9]]*\)'`
6307 if test x"${dsymutil_minor}" = x; then
6310 if test x"${dsymutil_tiny}" = x; then
6313 AC_DEFINE_UNQUOTED(DSYMUTIL_VERSION, [$dsymutil_kind,${dsymutil_major},${dsymutil_minor},${dsymutil_tiny}],
6314 [Define to the dsymutil version.])
6315 AC_MSG_RESULT($dsymutil_vers : $dsymutil_kind ${dsymutil_major} ${dsymutil_minor} ${dsymutil_tiny} )
6319 win32 | pe | cygwin* | mingw32*)
6320 AC_MSG_CHECKING(broken PE linker dwarf5 support)
6321 gcc_cv_ld_broken_pe_dwarf5=yes
6322 if test $in_tree_ld = yes ; then
6323 if grep -q '\.debug_loclists.*BLOCK.*__section_alignment__.*NOLOAD.*:' \
6324 $gcc_cv_ld_gld_srcdir/scripttempl/pe*.sc \
6325 && grep -q '\.debug_rnglists.*BLOCK.*__section_alignment__.*NOLOAD.*:' \
6326 $gcc_cv_ld_gld_srcdir/scripttempl/pe*.sc; then
6327 gcc_cv_ld_broken_pe_dwarf5=no
6330 if $gcc_cv_ld --verbose 2>&1 | grep -q '\.debug_loclists.*BLOCK.*__section_alignment__.*NOLOAD.*:' \
6331 && $gcc_cv_ld --verbose 2>&1 | grep -q '\.debug_rnglists.*BLOCK.*__section_alignment__.*NOLOAD.*:'; then
6332 gcc_cv_ld_broken_pe_dwarf5=no
6335 if test x$gcc_cv_ld_broken_pe_dwarf5 = xyes; then
6336 AC_DEFINE(HAVE_LD_BROKEN_PE_DWARF5, 1,
6337 [Define if the PE linker has broken DWARF 5 support.])
6339 AC_MSG_RESULT($gcc_cv_ld_broken_pe_dwarf5)
6341 AC_MSG_CHECKING(PE linker --disable-dynamicbase support)
6342 gcc_cv_ld_disable_dynamicbase=no
6343 if test $in_tree_ld = yes; then
6344 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 36 -o "$gcc_cv_gld_major_version" -gt 2; then \
6345 gcc_cv_ld_disable_dynamicbase=yes
6348 if $gcc_cv_ld --help 2>&1 | grep -q 'disable\-]dynamicbase' > /dev/null; then
6349 gcc_cv_ld_disable_dynamicbase=yes
6352 if test x"$gcc_cv_ld_disable_dynamicbase" = xyes; then
6353 AC_DEFINE(HAVE_LD_PE_DISABLE_DYNAMICBASE, 1,
6354 [Define if the PE linker supports --disable-dynamicbase option.])
6356 AC_MSG_RESULT($gcc_cv_ld_disable_dynamicbase)
6364 AC_CACHE_CHECK(linker --as-needed support,
6365 gcc_cv_ld_as_needed,
6366 [gcc_cv_ld_as_needed=no
6367 gcc_cv_ld_as_needed_option='--as-needed'
6368 gcc_cv_ld_no_as_needed_option='--no-as-needed'
6369 if test $in_tree_ld = yes ; then
6370 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
6371 && test $in_tree_ld_is_elf = yes; then
6372 gcc_cv_ld_as_needed=yes
6373 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 28; then
6374 gcc_cv_ld_as_needed_option='--push-state --as-needed'
6375 gcc_cv_ld_no_as_needed_option='--pop-state'
6378 elif test x$gcc_cv_ld != x; then
6379 # Check if linker supports --as-needed and --no-as-needed options
6380 if $gcc_cv_ld --help 2>&1 | grep as-needed > /dev/null; then
6381 gcc_cv_ld_as_needed=yes
6382 if $gcc_cv_ld --help 2>&1 | grep push-state > /dev/null \
6383 && $gcc_cv_ld --help 2>&1 | grep pop-state > /dev/null \
6384 && echo "$ld_ver" | grep GNU > /dev/null \
6385 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 28; then
6386 # Use these options only when both ld.bfd and ld.gold support
6387 # --push-state/--pop-state, which unfortunately wasn't added
6389 gcc_cv_ld_as_needed_option='--push-state --as-needed'
6390 gcc_cv_ld_no_as_needed_option='--pop-state'
6393 case "$target:$gnu_ld" in
6395 # Solaris 2 ld always supports -z ignore/-z record. Prefer the native
6397 gcc_cv_ld_as_needed=yes
6398 gcc_cv_ld_as_needed_option="-z ignore"
6399 gcc_cv_ld_no_as_needed_option="-z record"
6403 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
6404 # dl_iterate_phdr, i.e. since Solaris 11.
6406 *-*-solaris2.1[[1-9]]*)
6408 i?86-*-* | x86_64-*-*)
6409 if echo "$ld_ver" | grep GNU > /dev/null; then
6410 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
6411 gcc_cv_ld_as_needed=no
6417 gcc_cv_ld_as_needed=no
6421 if test x"$gcc_cv_ld_as_needed" = xyes; then
6422 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
6423 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
6424 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
6425 [Define to the linker option to ignore unused dependencies.])
6426 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
6427 [Define to the linker option to keep unused dependencies.])
6430 AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities)
6431 saved_LDFLAGS="$LDFLAGS"
6432 for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do
6433 LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map"
6434 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
6435 [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no])
6437 LDFLAGS="$saved_LDFLAGS"
6438 if test "x$gcc_cv_ld_clearcap" = xyes; then
6439 AC_DEFINE([HAVE_LD_CLEARCAP], 1,
6440 [Define if the linker supports clearing hardware capabilities via mapfile.])
6441 AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map])
6443 AC_MSG_RESULT($gcc_cv_ld_clearcap)
6449 emul_name="-melf32lppc"
6452 emul_name="-melf32ppc"
6455 AC_CACHE_CHECK(linker .gnu.attributes long double support,
6457 [gcc_cv_ld_ppc_attr=no
6458 if test x"$ld_is_gold" = xyes; then
6459 gcc_cv_ld_ppc_attr=yes
6460 elif test $in_tree_ld = yes ; then
6461 if test "$gcc_cv_gld_major_version" -eq 2 \
6462 -a "$gcc_cv_gld_minor_version" -ge 28 \
6463 -o "$gcc_cv_gld_major_version" -gt 2; then
6464 gcc_cv_ld_ppc_attr=yes
6466 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6467 # check that merging the long double .gnu_attribute doesn't warn
6468 cat > conftest1.s <<EOF
6471 cat > conftest2.s <<EOF
6474 if $gcc_cv_as -a32 -o conftest1.o conftest1.s > /dev/null 2>&1 \
6475 && $gcc_cv_as -a32 -o conftest2.o conftest2.s > /dev/null 2>&1 \
6476 && $gcc_cv_ld $emul_name -r -o conftest.o conftest1.o conftest2.o > /dev/null 2> conftest.err \
6477 && test ! -s conftest.err; then
6478 gcc_cv_ld_ppc_attr=yes
6480 rm -f conftest.err conftest.o conftest1.o conftest2.o conftest1.s conftest2.s
6483 if test x$gcc_cv_ld_ppc_attr = xyes; then
6484 AC_DEFINE(HAVE_LD_PPC_GNU_ATTR_LONG_DOUBLE, 1,
6485 [Define if your PowerPC linker has .gnu.attributes long double support.])
6490 case "$target:$tm_file" in
6491 powerpc64*-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
6494 emul_name="-melf64lppc"
6497 emul_name="-melf64ppc"
6500 emul_name="-melf64lppc_fbsd"
6503 emul_name="-melf64ppc_fbsd"
6506 AC_CACHE_CHECK(linker support for omitting dot symbols,
6507 gcc_cv_ld_no_dot_syms,
6508 [gcc_cv_ld_no_dot_syms=no
6509 if test x"$ld_is_gold" = xyes; then
6510 gcc_cv_ld_no_dot_syms=yes
6511 elif test $in_tree_ld = yes ; then
6512 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
6513 gcc_cv_ld_no_dot_syms=yes
6515 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6516 cat > conftest1.s <<EOF
6520 cat > conftest2.s <<EOF
6521 .section ".opd","aw"
6526 .quad .LEfoo,.TOC.@tocbase,0
6532 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
6533 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
6534 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
6535 gcc_cv_ld_no_dot_syms=yes
6537 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
6540 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
6541 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
6542 [Define if your PowerPC64 linker only needs function descriptor syms.])
6545 AC_CACHE_CHECK(linker large toc support,
6546 gcc_cv_ld_large_toc,
6547 [gcc_cv_ld_large_toc=no
6548 if test x"$ld_is_gold" = xyes; then
6549 gcc_cv_ld_large_toc=yes
6550 elif test $in_tree_ld = yes ; then
6551 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
6552 gcc_cv_ld_large_toc=yes
6554 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6555 cat > conftest.s <<EOF
6556 .section ".tbss","awT",@nobits
6562 addis 9,13,ie0@got@tprel@ha
6563 ld 9,ie0@got@tprel@l(9)
6565 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
6566 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
6567 gcc_cv_ld_large_toc=yes
6569 rm -f conftest conftest.o conftest.s
6572 if test x"$gcc_cv_ld_large_toc" = xyes; then
6573 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
6574 [Define if your PowerPC64 linker supports a large TOC.])
6577 AC_CACHE_CHECK(linker toc pointer alignment,
6578 gcc_cv_ld_toc_align,
6579 [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then
6580 cat > conftest.s <<EOF
6585 .section .data.rel.ro,"aw",@progbits
6590 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
6591 && $gcc_cv_ld $emul_name -z norelro -o conftest conftest.o > /dev/null 2>&1; then
6592 gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'`
6594 rm -f conftest conftest.o conftest.s
6597 if test -n "$gcc_cv_ld_toc_align" && test $gcc_cv_ld_toc_align -gt 8; then
6598 AC_DEFINE_UNQUOTED(POWERPC64_TOC_POINTER_ALIGNMENT, $gcc_cv_ld_toc_align,
6599 [Define to .TOC. alignment forced by your linker.])
6606 AC_CACHE_CHECK(linker large toc support,
6607 gcc_cv_ld_large_toc,
6608 [gcc_cv_ld_large_toc=no
6609 if test x$gcc_cv_as != x ; then
6610 cat > conftest.s <<EOF
6620 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
6621 gcc_cv_ld_large_toc=yes
6623 rm -f conftest conftest.o conftest.s
6626 if test x"$gcc_cv_ld_large_toc" = xyes; then
6627 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
6628 [Define if your PowerPC64 linker supports a large TOC.])
6633 AC_CACHE_CHECK(linker --build-id support,
6635 [gcc_cv_ld_buildid=no
6636 if test $in_tree_ld = yes ; then
6637 if test "$gcc_cv_gld_major_version" -eq 2 -a \
6638 "$gcc_cv_gld_minor_version" -ge 18 -o \
6639 "$gcc_cv_gld_major_version" -gt 2 \
6640 && test $in_tree_ld_is_elf = yes; then
6641 gcc_cv_ld_buildid=yes
6643 elif test x$gcc_cv_ld != x; then
6644 if $gcc_cv_ld --help 2>&1 | grep build-id > /dev/null; then
6645 gcc_cv_ld_buildid=yes
6648 if test x"$gcc_cv_ld_buildid" = xyes; then
6649 AC_DEFINE(HAVE_LD_BUILDID, 1,
6650 [Define if your linker supports --build-id.])
6653 AC_ARG_ENABLE(linker-build-id,
6654 [AS_HELP_STRING([--enable-linker-build-id],
6655 [compiler will always pass --build-id to linker])],
6657 enable_linker_build_id=no)
6659 if test x"$enable_linker_build_id" = xyes; then
6660 if test x"$gcc_cv_ld_buildid" = xyes; then
6661 AC_DEFINE(ENABLE_LD_BUILDID, 1,
6662 [Define if gcc should always pass --build-id to linker.])
6664 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
6668 # In binutils 2.21, GNU ld gained support for new emulations fully
6669 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
6670 AC_CACHE_CHECK(linker *_sol2 emulation support,
6671 gcc_cv_ld_sol2_emulation,
6672 [gcc_cv_ld_sol2_emulation=no
6673 if test $in_tree_ld = yes ; then
6674 if test "$gcc_cv_gld_major_version" -eq 2 -a \
6675 "$gcc_cv_gld_minor_version" -ge 21 -o \
6676 "$gcc_cv_gld_major_version" -gt 2 \
6677 && test $in_tree_ld_is_elf = yes; then
6678 gcc_cv_ld_sol2_emulation=yes
6680 elif test x$gcc_cv_ld != x; then
6681 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
6682 grep _sol2 > /dev/null; then
6683 gcc_cv_ld_sol2_emulation=yes
6686 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
6687 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
6688 [Define if your linker supports the *_sol2 emulations.])
6691 AC_CACHE_CHECK(linker --sysroot support,
6693 [gcc_cv_ld_sysroot=no
6694 if test $in_tree_ld = yes ; then
6695 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
6696 gcc_cv_ld_sysroot=yes
6698 elif test x$gcc_cv_ld != x; then
6699 if $gcc_cv_ld --help 2>&1 | grep sysroot > /dev/null; then
6700 gcc_cv_ld_sysroot=yes
6703 if test x"$gcc_cv_ld_sysroot" = xyes; then
6704 AC_DEFINE(HAVE_LD_SYSROOT, 1,
6705 [Define if your linker supports --sysroot.])
6710 # Check for system-provided CRTs on Solaris 11.x and Solaris 12.
6711 AC_CACHE_CHECK([system-provided CRTs on Solaris],
6712 gcc_cv_solaris_crts,
6713 [gcc_cv_solaris_crts=no
6714 if test x$host != x$target; then
6715 if test "x$with_sysroot" = xyes; then
6716 target_sysroot="${test_exec_prefix}/${target_noncanonical}/sys-root"
6718 target_sysroot="${with_sysroot}"
6721 target_libdir="$target_sysroot/usr/lib"
6722 # At the time they were added, gcrt1.o became a symlink for backwards
6723 # compatibility on x86, while crt1.o was added on sparc, so check for that.
6725 i?86-*-solaris2* | x86_64-*-solaris2*)
6726 if test -h "$target_libdir/gcrt1.o"; then gcc_cv_solaris_crts=yes; fi
6729 if test -f "$target_libdir/crt1.o"; then gcc_cv_solaris_crts=yes; fi
6734 if test x$gcc_cv_solaris_crts = xyes; then
6735 AC_DEFINE(HAVE_SOLARIS_CRTS, 1,
6736 [Define if the system-provided CRTs are present on Solaris.])
6739 AC_ARG_ENABLE(libssp,
6740 [AS_HELP_STRING([--enable-libssp], [enable linking against libssp])],
6741 [case "${enableval}" in
6745 AC_MSG_ERROR([unknown libssp setting $enableval])
6749 # Test for stack protector support in target C library.
6750 AC_CACHE_CHECK(__stack_chk_fail in target C library,
6751 gcc_cv_libc_provides_ssp,
6752 [gcc_cv_libc_provides_ssp=no
6753 if test "x$enable_libssp" = "xno"; then
6754 gcc_cv_libc_provides_ssp=yes
6755 elif test "x$enable_libssp" = "xyes"; then
6756 gcc_cv_libc_provides_ssp=no
6760 # All versions of musl provide stack protector
6761 gcc_cv_libc_provides_ssp=yes;;
6762 *-*-linux* | *-*-kfreebsd*-gnu)
6763 # glibc 2.4 and later provides __stack_chk_fail and
6764 # either __stack_chk_guard, or TLS access to stack guard canary.
6765 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
6766 [if test -f $target_header_dir/features.h \
6767 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
6768 $target_header_dir/features.h > /dev/null; then
6769 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
6770 $target_header_dir/features.h > /dev/null && \
6771 test -f $target_header_dir/bits/uClibc_config.h && \
6772 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
6773 $target_header_dir/bits/uClibc_config.h > /dev/null; then
6774 gcc_cv_libc_provides_ssp=yes
6776 # all versions of Bionic support stack protector
6777 elif test -f $target_header_dir/sys/cdefs.h \
6778 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
6779 $target_header_dir/sys/cdefs.h > /dev/null; then
6780 gcc_cv_libc_provides_ssp=yes
6784 # Avoid complicated tests (see
6785 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
6786 # simply assert that glibc does provide this, which is true for all
6787 # realistically usable GNU/Hurd configurations.
6788 # All supported versions of musl provide it as well
6789 gcc_cv_libc_provides_ssp=yes;;
6790 *-*-darwin* | *-*-freebsd* | *-*-netbsd*)
6791 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
6792 [echo "no __stack_chk_fail on this target"])
6794 *) gcc_cv_libc_provides_ssp=no ;;
6798 if test x$gcc_cv_libc_provides_ssp = xyes; then
6799 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
6800 [Define if your target C library provides stack protector support])
6803 # Check whether --enable-default-ssp was given.
6804 AC_ARG_ENABLE(default-ssp,
6805 [AS_HELP_STRING([--enable-default-ssp],
6806 [enable Stack Smashing Protection as default])],[
6807 if test x$gcc_cv_libc_provides_ssp = xyes; then
6809 ia64*-*-*) enable_default_ssp=no ;;
6810 *) enable_default_ssp=$enableval ;;
6813 enable_default_ssp=no
6815 enable_default_ssp=no)
6816 if test x$enable_default_ssp = xyes ; then
6817 AC_DEFINE(ENABLE_DEFAULT_SSP, 1,
6818 [Define if your target supports default stack protector and it is enabled.])
6820 AC_SUBST([enable_default_ssp])
6822 # Test for <sys/sdt.h> on the target.
6823 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
6824 AC_CACHE_CHECK([sys/sdt.h in the target C library], [gcc_cv_sys_sdt_h], [
6826 if test -f $target_header_dir/sys/sdt.h; then
6827 gcc_cv_sys_sdt_h=yes
6830 AS_IF([test x$gcc_cv_sys_sdt_h = xyes], [
6831 AC_DEFINE([HAVE_SYS_SDT_H], [1],
6832 [Define if your target C library provides sys/sdt.h])
6835 # Check if TFmode long double should be used by default or not.
6836 # Some glibc targets used DFmode long double, but with glibc 2.4
6837 # and later they can use TFmode.
6839 powerpc*-*-linux* | \
6843 AC_ARG_WITH(long-double-128,
6844 [AS_HELP_STRING([--with-long-double-128],
6845 [use 128-bit long double by default])],
6846 gcc_cv_target_ldbl128="$with_long_double_128", [
6848 s390*-*-linux-musl*)
6849 gcc_cv_target_ldbl128=yes
6851 powerpc*-*-linux-musl*)
6852 gcc_cv_target_ldbl128=no
6855 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
6856 [gcc_cv_target_ldbl128=no
6857 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
6858 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
6859 && gcc_cv_target_ldbl128=yes
6867 if test x$gcc_cv_target_ldbl128 = xyes; then
6868 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
6869 [Define if TFmode long double should be the default])
6872 # Check if TFmode long double target should use the IBM extended double or IEEE
6873 # 128-bit floating point formats if long doubles are 128-bits long. The long
6874 # double type can only be switched on powerpc64 bit Linux systems where VSX is
6875 # supported. Other PowerPC systems do not build the IEEE 128-bit emulator in
6877 AC_ARG_WITH([long-double-format],
6878 [AS_HELP_STRING([--with-long-double-format={ieee,ibm}]
6879 [Specify whether PowerPC long double uses IEEE or IBM format])],[
6880 case "$target:$with_long_double_format" in
6881 powerpc64le-*-linux*:ieee | powerpc64le-*-linux*:ibm)
6884 powerpc64-*-linux*:ieee | powerpc64-*-linux*:ibm)
6885 # IEEE 128-bit emulation is only built on 64-bit VSX Linux systems
6887 power7 | power8 | power9 | power1*)
6891 AC_MSG_ERROR([Configuration option --with-long-double-format is only \
6892 supported if the default cpu is power7 or newer])
6893 with_long_double_format=""
6897 powerpc64*-*-linux*:*)
6898 AC_MSG_ERROR([--with-long-double-format argument should be ibm or ieee])
6899 with_long_double_format=""
6902 AC_MSG_ERROR([Configure option --with-long-double-format is only supported \
6903 on 64-bit PowerPC VSX Linux systems])
6904 with_long_double_format=""
6909 # Check if the target LIBC supports exporting the AT_PLATFORM and AT_HWCAP
6910 # values in the TCB. Currently, only GLIBC 2.23 and later support this.
6911 gcc_cv_libc_provides_hwcap_in_tcb=no
6914 GCC_GLIBC_VERSION_GTE_IFELSE([2], [23], [gcc_cv_libc_provides_hwcap_in_tcb=yes], )
6917 if test x$gcc_cv_libc_provides_hwcap_in_tcb = xyes; then
6918 AC_DEFINE(TARGET_LIBC_PROVIDES_HWCAP_IN_TCB, 1,
6919 [Define if your target C Library provides the AT_HWCAP value in the TCB])
6922 # Check if the target LIBC handles PT_GNU_STACK.
6923 gcc_cv_libc_gnustack=unknown
6925 mips*-*-linux-musl*)
6926 gcc_cv_libc_gnustack=yes
6929 GCC_GLIBC_VERSION_GTE_IFELSE([2], [31], [gcc_cv_libc_gnustack=yes], )
6932 if test x$gcc_cv_libc_gnustack = xyes; then
6933 AC_DEFINE(TARGET_LIBC_GNUSTACK, 1,
6934 [Define if your target C Library properly handles PT_GNU_STACK])
6937 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
6938 gcc_cv_target_dl_iterate_phdr=unknown
6941 # <link.h> needs both a dl_iterate_phdr declaration and support for
6942 # compilation with largefile support.
6943 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
6944 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
6945 gcc_cv_target_dl_iterate_phdr=yes
6947 gcc_cv_target_dl_iterate_phdr=no
6950 *-*-dragonfly* | *-*-freebsd*)
6951 if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then
6952 gcc_cv_target_dl_iterate_phdr=yes
6954 gcc_cv_target_dl_iterate_phdr=no
6958 gcc_cv_target_dl_iterate_phdr=yes
6961 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
6962 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
6963 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
6964 [Define if your target C library provides the `dl_iterate_phdr' function.])
6966 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
6968 # We no longer support different GC mechanisms. Emit an error if
6969 # the user configures with --with-gc.
6971 [AS_HELP_STRING([--with-gc={page,zone}],
6972 [this option is not supported anymore. It used to choose
6973 the garbage collection mechanism to use with the compiler])],
6974 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
6977 # Libraries to use on the host. This will normally be set by the top
6978 # level Makefile. Here we simply capture the value for our Makefile.
6979 if test -z "${HOST_LIBS+set}"; then
6984 # Use the system's zlib library.
6987 dnl Very limited version of automake's enable-maintainer-mode
6989 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
6990 dnl maintainer-mode is disabled by default
6991 AC_ARG_ENABLE(maintainer-mode,
6992 [AS_HELP_STRING([--enable-maintainer-mode],
6993 [enable make rules and dependencies not useful
6994 (and sometimes confusing) to the casual installer])],
6995 maintainer_mode=$enableval,
6998 AC_MSG_RESULT($maintainer_mode)
7000 if test "$maintainer_mode" = "yes"; then
7007 dnl Variables for tags utilities; copied from automake 1.16.4+'s init.m4
7008 if test -z "$CTAGS"; then
7012 if test -z "$ETAGS"; then
7016 if test -z "$CSCOPE"; then
7021 dnl Whether to prevent multiple front-ends from linking at the same time
7023 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
7024 AC_ARG_ENABLE(link-mutex,
7025 [AS_HELP_STRING([--enable-link-mutex],
7026 [avoid linking multiple front-ends at once to avoid thrashing
7027 on the build machine])],
7028 do_link_mutex=$enableval,
7030 AC_MSG_RESULT($do_link_mutex)
7032 if test "$do_link_mutex" = "yes"; then
7034 AC_MSG_WARN([--enable-link-mutex is deprecated and will be removed in the next release, use --enable-link-serialization instead])
7038 AC_SUBST(DO_LINK_MUTEX)
7040 dnl Whether to prevent multiple GCC front-ends from linking at the same time
7042 AC_MSG_CHECKING([whether to serialize linking of multiple front-ends])
7043 AC_ARG_ENABLE(link-serialization,
7044 [AS_HELP_STRING([--enable-link-serialization],
7045 [avoid linking multiple GCC front-ends at once using make
7046 dependencies to avoid thrashing on the build machine])],
7047 do_link_serialization=$enableval,
7048 do_link_serialization=no)
7049 AC_MSG_RESULT($do_link_serialization)
7051 case "$do_link_serialization" in
7053 DO_LINK_SERIALIZATION=1;;
7054 [[1-9]] | [[1-9]][[0-9]] | [[1-9]][[0-9]][[0-9]])
7055 DO_LINK_SERIALIZATION=$do_link_serialization;;
7057 DO_LINK_SERIALIZATION=;;
7059 AC_MSG_ERROR(bad value ${do_link_serialization} given for --enable-link-serialization) ;;
7061 AC_SUBST(DO_LINK_SERIALIZATION)
7067 # Make empty files to contain the specs and options for each language.
7068 # Then add #include lines to for a compiler that has specs and/or options.
7074 # These (without "all_") are set in each config-lang.in.
7075 # `language' must be a single word so is spelled singularly.
7078 all_outputs='Makefile'
7079 # List of language configure and makefile fragments.
7080 all_lang_configurefrags=
7082 # Additional files for gengtype
7083 all_gtfiles="$target_gtfiles"
7085 # These are the languages that are set in --enable-languages,
7086 # and are available in the GCC tree.
7087 all_selected_languages=
7089 # Add the language fragments.
7090 # Languages are added via two mechanisms. Some information must be
7091 # recorded in makefile variables, these are defined in config-lang.in.
7092 # We accumulate them and plug them into the main Makefile.
7093 # The other mechanism is a set of hooks for each of the main targets
7094 # like `clean', `install', etc.
7096 language_hooks="Make-hooks"
7098 for lang in ${srcdir}/*/config-lang.in
7101 test "$lang" = "${srcdir}/*/config-lang.in" && continue
7103 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
7104 if test "x$lang_alias" = x
7106 echo "$lang doesn't set \$language." 1>&2
7109 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
7110 subdirs="$subdirs $subdir"
7112 # $gcc_subdir is where the gcc integration files are to be found
7113 # for a language, both for internal compiler purposes (compiler
7114 # sources implementing front-end to GCC tree converters), and for
7115 # build infrastructure purposes (Make-lang.in, etc.)
7117 # This will be <subdir> (relative to $srcdir) if a line like
7118 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
7119 # is found in <langdir>/config-lang.in, and will remain <langdir>
7122 # Except for the language alias (fetched above), the regular
7123 # "config-lang.in" contents are always retrieved from $gcc_subdir,
7124 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
7125 # only this and the language alias.
7127 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
7128 if [ "$gcc_subdir" = "" ]; then
7129 gcc_subdir="$subdir"
7132 case ",$enable_languages," in
7134 all_selected_languages="$all_selected_languages $lang_alias"
7135 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
7136 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
7148 . ${srcdir}/$gcc_subdir/config-lang.in
7149 if test "x$language" = x
7151 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
7156 case ",$enable_languages," in
7159 for i in $subdir_requires; do
7160 test -f "${srcdir}/$i/config-lang.in" && continue
7168 all_lang_configurefrags="$all_lang_configurefrags \$(srcdir)/$gcc_subdir/config-lang.in"
7169 if test "x$language" = xc && test -n "$all_lang_makefrags"; then
7170 # Put c/Make-lang.in fragment first to match serialization languages order.
7171 all_lang_makefrags="\$(srcdir)/$gcc_subdir/Make-lang.in $all_lang_makefrags"
7173 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
7175 if test -f $srcdir/$gcc_subdir/lang.opt; then
7176 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
7177 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
7179 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
7180 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
7182 all_languages="$all_languages $language"
7183 all_compilers="$all_compilers $compilers"
7184 all_outputs="$all_outputs $outputs"
7185 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
7186 case ",$enable_languages," in
7188 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
7190 AC_SUBST(enable_lto)
7197 for language in $all_selected_languages
7199 check_languages="$check_languages check-$language"
7203 for language in $all_selected_languages
7205 selftest_languages="$selftest_languages selftest-$language"
7208 # We link each language in with a set of hooks, reached indirectly via
7209 # lang.${target}. Only do so for selected languages.
7213 target_list="all.cross start.encap rest.encap tags \
7214 install-common install-man install-info install-dvi install-pdf \
7215 install-html dvi pdf html uninstall info man srcextra srcman srcinfo \
7216 mostlyclean clean distclean maintainer-clean install-plugin"
7218 for t in $target_list
7221 for lang in $all_selected_languages
7225 echo "lang.$t: $x" >> Make-hooks
7228 echo "ifeq (\$(DO_LINK_SERIALIZATION),)" >> Make-hooks
7229 echo "SERIAL_LIST =" >> Make-hooks
7230 echo else >> Make-hooks
7234 serialization_languages=c
7235 for lang in $all_selected_languages
7237 test $lang = c && continue
7238 if test $lang = lto; then
7239 serialization_languages="$serialization_languages lto1 lto2"
7241 serialization_languages="$serialization_languages $lang"
7244 for lang in $serialization_languages
7246 test $lang = c && continue
7247 lang_cnt=`expr $lang_cnt + 1`
7248 lang_list=" $prev$lang_list"
7251 echo "SERIAL_LIST = \$(wordlist \$(DO_LINK_SERIALIZATION),$lang_cnt,$lang_list)" >> Make-hooks
7252 echo endif >> Make-hooks
7253 echo "SERIAL_COUNT = `expr $lang_cnt + 1`" >> Make-hooks
7254 echo "INDEX.c = 0" >> Make-hooks
7256 for lang in $serialization_languages
7258 test $lang = c && continue
7259 echo "$lang.prev = \$(if \$(word $lang_cnt,\$(SERIAL_LIST)),\$(\$(word $lang_cnt,\$(SERIAL_LIST)).serial))" >> Make-hooks
7260 echo "INDEX.$lang = $lang_idx" >> Make-hooks
7261 lang_cnt=`expr $lang_cnt - 1`
7262 lang_idx=`expr $lang_idx + 1`
7266 # Option include files
7269 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
7270 option_includes="option-includes.mk"
7271 AC_SUBST_FILE(option_includes)
7279 echo "dir ." > .gdbinit
7280 echo "dir ${srcdir}" >> .gdbinit
7281 if test x$gdb_needs_out_file_path = xyes
7283 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
7285 if test "x$subdirs" != x; then
7288 echo "dir ${srcdir}/$s" >> .gdbinit
7291 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
7292 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
7294 # Put a breakpoint on __asan_report_error to help with debugging buffer
7297 *-fsanitize=address*)
7298 echo "source ${srcdir}/gdbasan.in" >> .gdbinit
7302 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
7303 AC_SUBST(gcc_tooldir)
7306 # Find a directory in which to install a shared libgcc.
7308 AC_ARG_ENABLE(version-specific-runtime-libs,
7309 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
7310 [specify that runtime libraries should be
7311 installed in a compiler-specific directory])])
7313 # Substitute configuration variables
7316 AC_SUBST(all_compilers)
7317 AC_SUBST(all_gtfiles)
7318 AC_SUBST(all_lang_configurefrags)
7319 AC_SUBST(all_lang_makefrags)
7320 AC_SUBST(all_languages)
7321 AC_SUBST(all_selected_languages)
7322 AC_SUBST(build_exeext)
7323 AC_SUBST(build_install_headers_dir)
7324 AC_SUBST(build_xm_file_list)
7325 AC_SUBST(build_xm_include_list)
7326 AC_SUBST(build_xm_defines)
7327 AC_SUBST(build_file_translate)
7328 AC_SUBST(check_languages)
7329 AC_SUBST(selftest_languages)
7330 AC_SUBST(cpp_install_dir)
7331 AC_SUBST(xmake_file)
7332 AC_SUBST(tmake_file)
7333 AC_SUBST(TM_ENDIAN_CONFIG)
7334 AC_SUBST(TM_MULTILIB_CONFIG)
7335 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
7336 AC_SUBST(extra_gcc_objs)
7337 AC_SUBST(user_headers_inc_next_pre)
7338 AC_SUBST(user_headers_inc_next_post)
7339 AC_SUBST(extra_headers_list)
7340 AC_SUBST(extra_objs)
7341 AC_SUBST(extra_programs)
7342 AC_SUBST(float_h_file)
7343 AC_SUBST(gcc_config_arguments)
7344 AC_SUBST(gcc_gxx_include_dir)
7345 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
7346 AC_SUBST(gcc_gxx_libcxx_include_dir)
7347 AC_SUBST(gcc_gxx_libcxx_include_dir_add_sysroot)
7348 AC_SUBST(host_exeext)
7349 AC_SUBST(host_xm_file_list)
7350 AC_SUBST(host_xm_include_list)
7351 AC_SUBST(host_xm_defines)
7352 AC_SUBST(out_host_hook_obj)
7354 AC_SUBST(lang_opt_files)
7355 AC_SUBST(lang_specs_files)
7356 AC_SUBST(lang_tree_files)
7357 AC_SUBST(local_prefix)
7359 AC_SUBST(objc_boehm_gc)
7361 AC_SUBST(out_object_file)
7362 AC_SUBST(common_out_file)
7363 AC_SUBST(common_out_object_file)
7364 AC_SUBST(tm_file_list)
7365 AC_SUBST(tm_include_list)
7366 AC_SUBST(tm_defines)
7367 AC_SUBST(tm_p_file_list)
7368 AC_SUBST(tm_p_include_list)
7369 AC_SUBST(tm_d_file_list)
7370 AC_SUBST(tm_d_include_list)
7371 AC_SUBST(xm_file_list)
7372 AC_SUBST(xm_include_list)
7373 AC_SUBST(xm_defines)
7374 AC_SUBST(use_gcc_stdint)
7375 AC_SUBST(c_target_objs)
7376 AC_SUBST(cxx_target_objs)
7377 AC_SUBST(fortran_target_objs)
7378 AC_SUBST(d_target_objs)
7379 AC_SUBST(target_cpu_default)
7381 AC_SUBST_FILE(language_hooks)
7384 if test x${build} = x${host} ; then
7385 if test x${host} = x${target} ; then
7386 echo "Links are now set up to build a native compiler for ${target}." 1>&2
7388 echo "Links are now set up to build a cross-compiler" 1>&2
7389 echo " from ${host} to ${target}." 1>&2
7392 if test x${host} = x${target} ; then
7393 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
7394 echo " for ${target}." 1>&2
7396 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
7397 echo " from ${host} to ${target}." 1>&2
7401 AC_ARG_VAR(GMPLIBS,[How to link GMP])
7402 AC_ARG_VAR(GMPINC,[How to find GMP include files])
7404 AC_ARG_VAR(ISLLIBS,[How to link isl])
7405 AC_ARG_VAR(ISLINC,[How to find isl include files])
7406 if test "x${ISLLIBS}" != "x" ; then
7407 AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.])
7411 AC_SUBST(pluginlibs)
7412 AC_SUBST(enable_plugin)
7413 if test x"$enable_plugin" = x"yes"; then
7414 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
7418 # Enable --enable-host-shared
7419 AC_ARG_ENABLE(host-shared,
7420 [AS_HELP_STRING([--enable-host-shared],
7421 [build host code as shared libraries])],
7422 [PICFLAG=-fPIC], [PICFLAG=])
7423 AC_SUBST(enable_host_shared)
7427 AC_ARG_ENABLE(libquadmath-support,
7428 [AS_HELP_STRING([--disable-libquadmath-support],
7429 [disable libquadmath support for Fortran])],
7430 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
7431 ENABLE_LIBQUADMATH_SUPPORT=yes)
7432 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
7433 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
7434 [Define to 1 to enable libquadmath support])
7438 # Specify what hash style to use by default.
7439 AC_ARG_WITH([linker-hash-style],
7440 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
7441 [specify the linker hash style])],
7442 [case x"$withval" in
7444 LINKER_HASH_STYLE=sysv
7447 LINKER_HASH_STYLE=gnu
7450 LINKER_HASH_STYLE=both
7453 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
7456 [LINKER_HASH_STYLE=''])
7457 if test x"${LINKER_HASH_STYLE}" != x; then
7458 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
7459 [The linker hash style])
7462 # Specify what should be the default of -fdiagnostics-color option.
7463 AC_ARG_WITH([diagnostics-color],
7464 [AC_HELP_STRING([--with-diagnostics-color={never,auto,auto-if-env,always}],
7465 [specify the default of -fdiagnostics-color option
7466 auto-if-env stands for -fdiagnostics-color=auto if
7467 GCC_COLOR environment variable is present and
7468 -fdiagnostics-color=never otherwise])],
7469 [case x"$withval" in
7471 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_NO
7474 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO
7477 DIAGNOSTICS_COLOR_DEFAULT=-1
7480 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_YES
7483 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-color])
7486 [DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO])
7487 AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT,
7488 [The default for -fdiagnostics-color option])
7490 # Specify what should be the default of -fdiagnostics-urls option.
7491 AC_ARG_WITH([diagnostics-urls],
7492 [AC_HELP_STRING([--with-diagnostics-urls={never,auto,auto-if-env,always}],
7493 [specify the default of -fdiagnostics-urls option
7494 auto-if-env stands for -fdiagnostics-urls=auto if
7495 GCC_URLS or TERM_URLS environment variable is present and
7496 -fdiagnostics-urls=never otherwise])],
7497 [case x"$withval" in
7499 DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_NO
7502 DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_AUTO
7505 DIAGNOSTICS_URLS_DEFAULT=-1
7508 DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_YES
7511 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-urls])
7514 [DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_AUTO])
7515 AC_DEFINE_UNQUOTED(DIAGNOSTICS_URLS_DEFAULT, $DIAGNOSTICS_URLS_DEFAULT,
7516 [The default for -fdiagnostics-urls option])
7518 # Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit
7519 # of jit/jit-playback.cc.
7520 gcc_driver_version=`eval "${get_gcc_base_ver} $srcdir/BASE-VER"`
7521 echo "gcc_driver_version: ${gcc_driver_version}"
7522 cat > gcc-driver-name.h <<EOF
7523 #define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_driver_version}${exeext}"
7526 # Check whether --enable-default-pie was given.
7527 AC_ARG_ENABLE(default-pie,
7528 [AS_HELP_STRING([--enable-default-pie],
7529 [enable Position Independent Executable as default])],
7530 enable_default_pie=$enableval,
7531 enable_default_pie=no)
7532 if test x$enable_default_pie = xyes ; then
7533 AC_DEFINE(ENABLE_DEFAULT_PIE, 1,
7534 [Define if your target supports default PIE and it is enabled.])
7536 AC_SUBST([enable_default_pie])
7538 # Check if -fno-PIE works.
7539 AC_CACHE_CHECK([for -fno-PIE option],
7541 [saved_CXXFLAGS="$CXXFLAGS"
7542 CXXFLAGS="$CXXFLAGS -fno-PIE"
7543 AC_COMPILE_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
7544 [gcc_cv_c_no_fpie=yes],
7545 [gcc_cv_c_no_fpie=no])
7546 CXXFLAGS="$saved_CXXFLAGS"])
7547 if test "$gcc_cv_c_no_fpie" = "yes"; then
7548 NO_PIE_CFLAGS="-fno-PIE"
7550 AC_SUBST([NO_PIE_CFLAGS])
7552 # Check if -no-pie works.
7553 AC_CACHE_CHECK([for -no-pie option],
7555 [saved_LDFLAGS="$LDFLAGS"
7556 LDFLAGS="$LDFLAGS -no-pie"
7557 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
7558 [gcc_cv_no_pie=yes],
7560 LDFLAGS="$saved_LDFLAGS"])
7561 if test "$gcc_cv_no_pie" = "yes"; then
7562 NO_PIE_FLAG="-no-pie"
7564 AC_SUBST([NO_PIE_FLAG])
7566 # Enable Intel CET on Intel CET enabled host if jit is enabled.
7567 GCC_CET_HOST_FLAGS(CET_HOST_FLAGS)
7568 case x$enable_languages in
7575 AC_SUBST(CET_HOST_FLAGS)
7577 # Check linker supports '-z bndplt'
7578 ld_bndplt_support=no
7579 AC_MSG_CHECKING(linker -z bndplt option)
7580 if test x"$ld_is_gold" = xno; then
7581 if test $in_tree_ld = yes ; then
7582 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
7583 ld_bndplt_support=yes
7585 elif test x$gcc_cv_ld != x; then
7586 # Check if linker supports -a bndplt option
7587 if $gcc_cv_ld --help 2>&1 | grep -- '-z bndplt' > /dev/null; then
7588 ld_bndplt_support=yes
7592 if test x"$ld_bndplt_support" = xyes; then
7593 AC_DEFINE(HAVE_LD_BNDPLT_SUPPORT, 1,
7594 [Define if your linker supports -z bndplt])
7596 AC_MSG_RESULT($ld_bndplt_support)
7598 # Check linker supports '--push-state'/'--pop-state'
7599 ld_pushpopstate_support=no
7600 AC_MSG_CHECKING(linker --push-state/--pop-state options)
7601 if test x"$ld_is_gold" = xno; then
7602 if test $in_tree_ld = yes ; then
7603 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
7604 ld_pushpopstate_support=yes
7606 elif test x$gcc_cv_ld != x; then
7607 # Check if linker supports --push-state/--pop-state options
7608 if $gcc_cv_ld --help 2>&1 | grep -- '--push-state' > /dev/null; then
7609 ld_pushpopstate_support=yes
7613 if test x"$ld_pushpopstate_support" = xyes; then
7614 AC_DEFINE(HAVE_LD_PUSHPOPSTATE_SUPPORT, 1,
7615 [Define if your linker supports --push-state/--pop-state])
7617 AC_MSG_RESULT($ld_pushpopstate_support)
7619 # On s390, float_t has historically been statically defined as double for no
7620 # good reason. To comply with the C standard in the light of this definition,
7621 # gcc has evaluated float expressions in double precision when in
7622 # standards-compatible mode or when given -fexcess-precision=standard. To enable
7623 # a smooth transition towards the new model used by most architectures, where
7624 # gcc describes its behavior via the macro __FLT_EVAL_METHOD__ and glibc derives
7625 # float_t from that, this behavior can be configured with
7626 # --enable-s390-excess-float-precision. When given as enabled, that flag selects
7627 # the old model. When omitted, native builds and cross compiles that have target
7628 # libc headers will detect whether libc clamps float_t to double and in that
7629 # case maintain the old model. Otherwise, they will default to the new model.
7630 AC_ARG_ENABLE(s390-excess-float-precision,
7631 [AS_HELP_STRING([--enable-s390-excess-float-precision],
7632 [on s390 targets, evaluate float with double precision
7633 when in standards-conforming mode])],
7634 [],[enable_s390_excess_float_precision=auto])
7638 if test x"$enable_s390_excess_float_precision" = xauto; then
7639 # Can we autodetect the behavior of the target libc?
7640 if test "$target" = "$host" -a "$host" = "$build"; then
7641 enable_s390_excess_float_precision=autodetect
7642 elif test "x$with_headers" != xno; then
7643 # cross build. are target headers available?
7644 # carefully coerce the build-system compiler to use target headers
7645 saved_CXXFLAGS="$CXXFLAGS"
7646 fixed_XGCC_FLAGS_FOR_TARGET=`echo "$XGCC_FLAGS_FOR_TARGET" | sed 's/-B/-idirafter/g'`
7647 CROSS_TEST_CXXFLAGS="-nostdinc $fixed_XGCC_FLAGS_FOR_TARGET"
7648 CXXFLAGS="$CROSS_TEST_CXXFLAGS"
7649 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
7651 ]])], [enable_s390_excess_float_precision=autodetect], [])
7652 CXXFLAGS="$saved_CXXFLAGS"
7655 if test x"$enable_s390_excess_float_precision" = xautodetect; then
7656 saved_CXXFLAGS="$CXXFLAGS"
7657 if ! test "$target" = "$host" -a "$host" = "$build"; then
7658 CXXFLAGS="$CROSS_TEST_CXXFLAGS"
7659 unset CROSS_TEST_CXXFLAGS
7661 AC_CACHE_CHECK([for glibc clamping float_t to double],
7662 gcc_cv_float_t_clamped_to_double, [
7663 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
7664 #define __FLT_EVAL_METHOD__ 0
7666 int dummy[sizeof(float_t) == sizeof(double) ? 1 : -1];
7668 [gcc_cv_float_t_clamped_to_double=yes],
7669 [gcc_cv_float_t_clamped_to_double=no])])
7670 CXXFLAGS="$saved_CXXFLAGS"
7671 enable_s390_excess_float_precision="$gcc_cv_float_t_clamped_to_double"
7673 # no way to detect behavior of target libc, default to new model
7674 enable_s390_excess_float_precision=no
7678 GCC_TARGET_TEMPLATE(ENABLE_S390_EXCESS_FLOAT_PRECISION)
7679 if test x"$enable_s390_excess_float_precision" = xyes; then
7680 AC_DEFINE(ENABLE_S390_EXCESS_FLOAT_PRECISION, 1,
7681 [Define to enable evaluating float expressions with double precision in
7682 standards-compatible mode on s390 targets.])
7687 # Configure the subdirectories
7688 # AC_CONFIG_SUBDIRS($subdirs)
7690 # Create the Makefile
7691 # and configure language subdirectories
7692 AC_CONFIG_FILES($all_outputs)
7694 AC_CONFIG_COMMANDS([default],
7696 case ${CONFIG_HEADERS} in
7697 *auto-host.h:config.in*)
7700 # Make sure all the subdirs exist.
7701 for d in $subdirs doc build common c-family
7703 test -d $d || mkdir $d
7706 [subdirs='$subdirs'])