2 # Process this file with autoconf to generate a configuration script.
4 # Copyright (C) 1997-2025 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 ${withval} given for libc++ include directory) ;;
240 *) gcc_gxx_libcxx_include_dir=$with_gxx_libcxx_include_dir ;;
243 # --with-gxx-libcxx-include-dir controls the enabling of the -stdlib option.
244 # if --with-gxx-libcxx-include-dir is 'no' we disable the stdlib option.
245 # if --with-gxx-libcxx-include-dir is unset we enable the stdlib option
246 # based on the platform (to be available on platform versions where it is the
247 # default for the system tools). We also use a default path within the compiler
249 # Otherwise, we use the path provided and enable the stdlib option.
250 # If both --with-sysroot and --with-gxx-libcxx-include-dir are passed, we
251 # check to see if the latter starts with the former and, upon success, compute
252 # gcc_gxx_libcxx_include_dir as relative to the sysroot.
253 gcc_gxx_libcxx_include_dir_add_sysroot=0
254 gcc_enable_stdlib_opt=0
255 if test x${gcc_gxx_libcxx_include_dir} != x; then
256 if test x${gcc_gxx_libcxx_include_dir} = xno; then
257 # set defaults for the dir, but the option is disabled anyway.
258 gcc_gxx_libcxx_include_dir=
260 gcc_enable_stdlib_opt=1
264 *-darwin1[[1-9]]* | *-darwin2*)
265 # Default this on for Darwin versions which default to libcxx,
266 # and embed the path in the compiler install so that we get a
267 # self-contained toolchain.
268 gcc_enable_stdlib_opt=1
273 AC_DEFINE_UNQUOTED(ENABLE_STDLIB_OPTION, $gcc_enable_stdlib_opt,
274 [Define if the -stdlib= option should be enabled.])
276 # Sysroot behaviour as for gxx-include-dir
277 if test x${gcc_gxx_libcxx_include_dir} = x; then
278 # default path,embedded in the compiler tree.
279 libcxx_incdir='include/c++/v1'
280 if test x${enable_version_specific_runtime_libs} = xyes; then
281 gcc_gxx_libcxx_include_dir='${libsubdir}/$libcxx_incdir'
283 if test x$host != x$target; then
284 libcxx_incdir="$target_alias/$libcxx_incdir"
286 gcc_gxx_libcxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libcxx_incdir"
288 elif test "${with_sysroot+set}" = set; then
289 gcc_gxx_libcxx_without_sysroot=`expr "${gcc_gxx_libcxx_include_dir}" : "${with_sysroot}"'\(.*\)'`
290 if test "${gcc_gxx_libcxx_without_sysroot}"; then
291 gcc_gxx_libcxx_include_dir="${gcc_gxx_libcxx_without_sysroot}"
292 gcc_gxx_libcxx_include_dir_add_sysroot=1
296 AC_ARG_WITH(cpp_install_dir,
297 [AC_HELP_STRING([--with-cpp-install-dir=DIR],
298 [install the user visible C preprocessor in DIR
299 (relative to PREFIX) as well as PREFIX/bin])],
300 [if test x$withval = xyes; then
301 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
302 elif test x$withval != xno; then
303 cpp_install_dir=$withval
306 # We would like to our source tree to be readonly. However when releases or
307 # pre-releases are generated, the flex/bison generated files as well as the
308 # various formats of manuals need to be included along with the rest of the
309 # sources. Therefore we have --enable-generated-files-in-srcdir to do
312 AC_MSG_CHECKING([whether to place generated files in the source directory])
313 dnl generated-files-in-srcdir is disabled by default
314 AC_ARG_ENABLE(generated-files-in-srcdir,
315 [AS_HELP_STRING([--enable-generated-files-in-srcdir],
316 [put copies of generated files in source dir
317 intended for creating source tarballs for users
318 without texinfo bison or flex])],
319 generated_files_in_srcdir=$enableval,
320 generated_files_in_srcdir=no)
322 AC_MSG_RESULT($generated_files_in_srcdir)
324 if test "$generated_files_in_srcdir" = "yes"; then
331 # -------------------
332 # Find default linker
333 # -------------------
337 [AS_HELP_STRING([--with-gnu-ld], [arrange to work with GNU ld])],
338 gnu_ld_flag="$with_gnu_ld",
343 ld64_flag=yes # Darwin can only use a ld64-compatible linker.
344 dsymutil_flag=yes # Darwin uses dsymutil to link debug.
352 # With pre-defined ld
354 [AS_HELP_STRING([--with-ld], [arrange to use the specified ld (full pathname)])],
355 DEFAULT_LINKER="$with_ld")
356 if test x"${DEFAULT_LINKER+set}" = x"set"; then
357 if test ! -x "$DEFAULT_LINKER"; then
358 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
359 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
361 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep ld64- > /dev/null; then
364 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
365 [Define to enable the use of a default linker.])
368 AC_MSG_CHECKING([whether a default linker was specified])
369 if test x"${DEFAULT_LINKER+set}" = x"set"; then
370 if test x"$gnu_ld_flag" = x"no"; then
371 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
373 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
379 # With demangler in GNU ld
380 AC_ARG_WITH(demangler-in-ld,
381 [AS_HELP_STRING([--with-demangler-in-ld], [try to use demangler in GNU ld])],
382 demangler_in_ld="$with_demangler_in_ld",
385 # Allow the user to specify a dsymutil executable (used on Darwin only, so far)
386 AC_ARG_WITH(dsymutil,
387 [AS_HELP_STRING([--with-dsymutil], [arrange to use the specified dsymutil (full pathname)])],
388 DEFAULT_DSYMUTIL="$with_dsymutil")
391 if test x"${DEFAULT_DSYMUTIL+set}" = x"set"; then
392 if test ! -x "$DEFAULT_DSYMUTIL"; then
393 AC_MSG_ERROR([cannot execute: $DEFAULT_DSYMUTIL: check --with-dsymutil or env. var. DEFAULT_DSYMUTIL])
395 if dsymutil_vers=`$DEFAULT_DSYMUTIL -v /dev/null 2>&1`; then
399 AC_DEFINE_UNQUOTED(DEFAULT_DSYMUTIL,"$DEFAULT_DSYMUTIL",
400 [Define to enable the use of a default debug linker.])
403 AC_MSG_CHECKING([whether a default dsymutil was specified])
404 if test x"${DEFAULT_DSYMUTIL+set}" = x"set"; then
405 AC_MSG_RESULT([yes ($DEFAULT_DSYMUTIL)])
410 # ----------------------
411 # Find default assembler
412 # ----------------------
416 [AS_HELP_STRING([--with-gnu-as], [arrange to work with GNU as])],
417 gas_flag="$with_gnu_as",
421 [AS_HELP_STRING([--with-as], [arrange to use the specified as (full pathname)])],
422 DEFAULT_ASSEMBLER="$with_as")
423 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
424 if test ! -x "$DEFAULT_ASSEMBLER"; then
425 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
426 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
429 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
430 [Define to enable the use of a default assembler.])
433 AC_MSG_CHECKING([whether a default assembler was specified])
434 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
435 if test x"$gas_flag" = x"no"; then
436 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
438 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
448 # If a non-executable a.out is present (e.g. created by GNU as above even if
449 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
450 # file, even when creating an executable, so an execution test fails.
451 # Remove possible default executable files to avoid this.
453 # FIXME: This really belongs into AC_PROG_CC and can be removed once
454 # Autoconf includes it.
455 rm -f a.out a.exe b.out
457 # Find the native compiler
460 ACX_PROG_GNAT([-I"$srcdir"/ada/libgnat])
461 ACX_PROG_GDC([-I"$srcdir"/d])
463 # Do configure tests with the C++ compiler, since that's what we build with.
466 # Remove all -O flags: for historical reasons, unless bootstrapping we prefer
467 # optimizations to be activated explicitly by the toplevel.
472 for flag in $CFLAGS; do
475 *) new_CFLAGS="$new_CFLAGS $flag" ;;
480 for flag in $CXXFLAGS; do
483 *) new_CXXFLAGS="$new_CXXFLAGS $flag" ;;
486 CXXFLAGS=$new_CXXFLAGS
493 # Determine PICFLAG for target gnatlib.
494 GCC_PICFLAG_FOR_TARGET
495 AC_SUBST(PICFLAG_FOR_TARGET)
497 # -------------------------
498 # Check C compiler features
499 # -------------------------
501 AC_USE_SYSTEM_EXTENSIONS
507 AC_CHECK_SIZEOF(ino_t)
508 AC_CHECK_SIZEOF(dev_t)
510 # Select the right stat being able to handle 64bit inodes, if needed.
511 if test "$enable_largefile" != no; then
512 case "$host, $build" in
513 *-*-aix*,*|*,*-*-aix*)
514 if test "$ac_cv_sizeof_ino_t" = "4" -a "$ac_cv_sizeof_dev_t" = 4; then
515 AC_DEFINE(HOST_STAT_FOR_64BIT_INODES, stat64x,
516 [Define which stat syscall is able to handle 64bit indodes.])
522 # sizeof(char) is 1 by definition.
523 AC_CHECK_SIZEOF(void *)
524 AC_CHECK_SIZEOF(short)
526 AC_CHECK_SIZEOF(long)
527 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
529 if test x"$ac_cv_c_uint64_t" = x"no" -o x"$ac_cv_c_int64_t" = x"no"; then
530 AC_MSG_ERROR([uint64_t or int64_t not found])
533 # check what underlying integer type int64_t uses
534 AC_CACHE_CHECK(for int64_t underlying type, ac_cv_int64_t_type, [
535 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
539 template <typename T> struct X { };
541 struct X<long> { typedef long t; };
542 ]], [[X<int64_t>::t x;]])],[ac_cv_int64_t_type=long],[ac_cv_int64_t_type="long long"])])
543 if test "$ac_cv_int64_t_type" = "long"; then
544 AC_DEFINE(INT64_T_IS_LONG, 1,
545 [Define if int64_t uses long as underlying type.])
547 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
551 template <typename T> struct X { };
553 struct X<long long> { typedef long long t; };
554 ]], [[X<int64_t>::t x;]])],[],[AC_MSG_ERROR([error verifying int64_t uses long long])])
557 AC_CACHE_CHECK(for std::swap in <utility>, ac_cv_std_swap_in_utility, [
558 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
560 ]], [[int a, b; std::swap(a,b);]])],[ac_cv_std_swap_in_utility=yes],[ac_cv_std_swap_in_utility=no])])
561 if test $ac_cv_std_swap_in_utility = yes; then
562 AC_DEFINE(HAVE_SWAP_IN_UTILITY, 1,
563 [Define if <utility> defines std::swap.])
566 # Check whether compiler is affected by placement new aliasing bug (PR 29286).
567 # If the host compiler is affected by the bug, and we build with optimization
568 # enabled (which happens e.g. when cross-compiling), the pool allocator may
569 # get miscompiled. Use -fno-strict-aliasing to work around this problem.
570 # Since there is no reliable feature check for the presence of this bug,
571 # we simply use a GCC version number check. (This should never trigger for
572 # stages 2 or 3 of a native bootstrap.)
574 if test "$GCC" = yes; then
575 saved_CXXFLAGS="$CXXFLAGS"
577 # The following test compilation will succeed if and only if $CXX accepts
578 # -fno-strict-aliasing *and* is older than GCC 4.3.
579 CXXFLAGS="$CXXFLAGS -fno-strict-aliasing"
580 AC_MSG_CHECKING([whether $CXX is affected by placement new aliasing bug])
581 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
582 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)
583 #error compiler not affected by placement new aliasing bug
586 [AC_MSG_RESULT([yes]); aliasing_flags='-fno-strict-aliasing'],
587 [AC_MSG_RESULT([no])])
589 CXXFLAGS="$saved_CXXFLAGS"
591 AC_SUBST(aliasing_flags)
595 # ---------------------
596 # Warnings and checking
597 # ---------------------
599 # Check $CC warning features (if it's GCC).
600 # We want to use -pedantic, but we don't want warnings about
604 # So, we only use -pedantic if we can disable those warnings.
606 # In stage 1, disable -Wformat warnings from old GCCs about new % codes
607 AC_ARG_ENABLE(build-format-warnings,
608 AS_HELP_STRING([--disable-build-format-warnings],[don't use -Wformat while building GCC]),
609 [],[enable_build_format_warnings=yes])
610 AS_IF([test $enable_build_format_warnings = no],
611 [wf_opt=-Wno-format],[wf_opt=])
612 ACX_PROG_CXX_WARNING_OPTS(
613 m4_quote(m4_do([-W -Wall -Wno-error=narrowing -Wwrite-strings ],
614 [-Wcast-qual $wf_opt])),
616 ACX_PROG_CC_WARNING_OPTS(
617 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes ],
618 [])), [c_loose_warn])
619 ACX_PROG_CXX_WARNING_OPTS(
620 m4_quote(m4_do([-Wmissing-format-attribute ], [-Wconditionally-supported ],
621 [-Woverloaded-virtual])), [strict_warn])
622 ACX_PROG_CC_WARNING_OPTS(
623 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
624 ACX_PROG_CXX_WARNING_ALMOST_PEDANTIC(
625 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
626 [-Wno-overlength-strings])), [strict_warn])
627 ACX_PROG_CXX_WARNINGS_ARE_ERRORS([manual], [strict_warn])
629 # The above macros do nothing if the compiler is not GCC. However, the
630 # Makefile has more goo to add other flags, so these variables are used
631 # to enable warnings only for GCC.
634 if test "x$GCC" = "xyes"; then
635 warn_cflags='$(GCC_WARN_CFLAGS)'
636 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
638 AC_SUBST(warn_cflags)
639 AC_SUBST(warn_cxxflags)
641 # Disable exceptions and RTTI if building with g++
642 ACX_PROG_CC_WARNING_OPTS(
643 m4_quote(m4_do([-fno-exceptions -fno-rtti -fasynchronous-unwind-tables])),
646 # Enable expensive internal checks
648 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
652 AC_ARG_ENABLE(checking,
653 [AS_HELP_STRING([[--enable-checking[=LIST]]],
654 [enable expensive run-time checks. With LIST,
655 enable only specific categories of checks.
656 Categories are: yes,no,all,none,release.
657 Flags are: assert,df,extra,fold,gc,gcac,gimple,misc,
658 rtlflag,rtl,runtime,tree,valgrind,types])],
659 [ac_checking_flags="${enableval}"],[
660 # Determine the default checks.
661 if test x$is_release = x ; then
662 ac_checking_flags=yes,extra
664 ac_checking_flags=release
666 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
667 for check in release $ac_checking_flags
670 # these set all the flags to specific states
671 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
672 ac_fold_checking= ; ac_gc_checking=1 ; ac_extra_checking= ;
673 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
674 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
675 ac_tree_checking=1 ; ac_valgrind_checking= ;
676 ac_types_checking=1 ;;
677 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
678 ac_fold_checking= ; ac_gc_checking= ; ac_extra_checking= ;
679 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
680 ac_rtlflag_checking= ; ac_runtime_checking= ;
681 ac_tree_checking= ; ac_valgrind_checking= ;
682 ac_types_checking= ;;
683 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
684 ac_fold_checking=1 ; ac_gc_checking=1 ; ac_extra_checking=1 ;
685 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
686 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
687 ac_tree_checking=1 ; ac_valgrind_checking= ;
688 ac_types_checking=1 ;;
689 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
690 ac_fold_checking= ; ac_gc_checking= ; ac_extra_checking= ;
691 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
692 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
693 ac_tree_checking= ; ac_valgrind_checking= ;
694 ac_types_checking= ;;
695 # these enable particular checks
696 assert) ac_assert_checking=1 ;;
697 df) ac_df_checking=1 ;;
698 extra) ac_extra_checking=1 ;;
699 fold) ac_fold_checking=1 ;;
700 gc) ac_gc_checking=1 ;;
701 gcac) ac_gc_always_collect=1 ;;
702 gimple) ac_gimple_checking=1 ;;
703 misc) ac_checking=1 ;;
704 rtl) ac_rtl_checking=1 ;;
705 rtlflag) ac_rtlflag_checking=1 ;;
706 runtime) ac_runtime_checking=1 ;;
707 tree) ac_tree_checking=1 ;;
708 types) ac_types_checking=1 ;;
709 valgrind) ac_valgrind_checking=1 ;;
710 *) AC_MSG_ERROR(unknown check category $check) ;;
715 if test x$ac_checking != x ; then
716 AC_DEFINE(CHECKING_P, 1,
717 [Define to 0/1 if you want more run-time sanity checks. This one gets a grab
718 bag of miscellaneous but relatively cheap checks.])
720 AC_DEFINE(CHECKING_P, 0)
722 if test x$ac_extra_checking != x ; then
723 AC_DEFINE(ENABLE_EXTRA_CHECKING, 1,
724 [Define to 0/1 if you want extra run-time checking that might affect code
727 AC_DEFINE(ENABLE_EXTRA_CHECKING, 0)
729 if test x$ac_df_checking != x ; then
730 AC_DEFINE(ENABLE_DF_CHECKING, 1,
731 [Define if you want more run-time sanity checks for dataflow.])
733 if test x$ac_assert_checking != x ; then
734 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
735 [Define if you want assertions enabled. This is a cheap check.])
737 if test x$ac_gimple_checking != x ; then
738 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
739 [Define if you want operations on GIMPLE (the basic data structure of
740 the high-level optimizers) to be checked for dynamic type safety at
741 runtime. This is moderately expensive.])
743 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
744 if test x$ac_runtime_checking != x ; then
745 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
746 [Define if you want runtime assertions enabled. This is a cheap check.])
748 if test x$ac_tree_checking != x ; then
749 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
750 [Define if you want all operations on trees (the basic data
751 structure of the front ends) to be checked for dynamic type safety
752 at runtime. This is moderately expensive.
756 if test x$ac_types_checking != x ; then
757 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
758 [Define if you want all gimple types to be verified after gimplifiation.
762 AC_SUBST(TREECHECKING)
763 if test x$ac_rtl_checking != x ; then
764 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
765 [Define if you want all operations on RTL (the basic data structure
766 of the optimizer and back end) to be checked for dynamic type safety
767 at runtime. This is quite expensive.])
769 if test x$ac_rtlflag_checking != x ; then
770 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
771 [Define if you want RTL flag accesses to be checked against the RTL
772 codes that are supported for each access macro. This is relatively
775 if test x$ac_gc_checking != x ; then
776 AC_DEFINE(ENABLE_GC_CHECKING, 1,
777 [Define if you want the garbage collector to do object poisoning and
778 other memory allocation checks. This is quite expensive.])
780 if test x$ac_gc_always_collect != x ; then
781 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
782 [Define if you want the garbage collector to operate in maximally
783 paranoid mode, validating the entire heap and collecting garbage at
784 every opportunity. This is extremely expensive.])
786 if test x$ac_fold_checking != x ; then
787 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
788 [Define if you want fold checked that it never destructs its argument.
789 This is quite expensive.])
791 valgrind_path_defines=
793 if test x$ac_valgrind_checking != x ; then
794 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
795 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
796 if test "x$valgrind_path" = "x"; then
797 AC_MSG_ERROR([*** Cannot find valgrind])
799 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
800 valgrind_command="$valgrind_path -q"
801 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
802 [Define if you want to run subprograms and generated programs
803 through valgrind (a memory checker). This is extremely expensive.])
805 AC_SUBST(valgrind_path_defines)
806 AC_SUBST(valgrind_command)
808 # Enable code coverage collection
809 AC_ARG_ENABLE(coverage,
810 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
811 [enable compiler's code coverage collection.
812 Use to measure compiler performance and locate
813 unused parts of the compiler. With LEVEL, specify
814 optimization. Values are opt, noopt,
816 [case "${enableval}" in
818 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0 -fkeep-static-functions"
821 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2 -fkeep-static-functions"
824 # a.k.a. --disable-coverage
828 AC_MSG_ERROR(unknown coverage setting $enableval)
832 AC_SUBST(coverage_flags)
834 AC_ARG_ENABLE(gather-detailed-mem-stats,
835 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
836 [enable detailed memory allocation stats gathering])], [],
837 [enable_gather_detailed_mem_stats=no])
838 gather_stats=`if test $enable_gather_detailed_mem_stats != no; then echo 1; else echo 0; fi`
839 AC_DEFINE_UNQUOTED(GATHER_STATISTICS, $gather_stats,
840 [Define to enable detailed memory allocation stats gathering.])
842 AC_ARG_ENABLE(valgrind-annotations,
843 [AS_HELP_STRING([--enable-valgrind-annotations],
844 [enable valgrind runtime interaction])], [],
845 [enable_valgrind_annotations=no])
846 AC_CHECK_HEADER(valgrind/memcheck.h)
847 if test x$enable_valgrind_annotations != xno \
848 || test x$ac_valgrind_checking != x; then
849 if test $ac_cv_header_valgrind_memcheck_h = no; then
850 AC_MSG_ERROR([*** Cannot find valgrind/memcheck.h])
852 AC_DEFINE(ENABLE_VALGRIND_ANNOTATIONS, 1,
853 [Define to get calls to the valgrind runtime enabled.])
856 # -------------------------------
857 # Miscenalleous configure options
858 # -------------------------------
860 # Determine whether or not multilibs are enabled.
861 AC_ARG_ENABLE(multilib,
862 [AS_HELP_STRING([--enable-multilib],
863 [enable library support for multiple ABIs])],
864 [], [enable_multilib=yes])
865 AC_SUBST(enable_multilib)
867 # Determine whether or not multiarch is enabled.
868 AC_ARG_ENABLE(multiarch,
869 [AS_HELP_STRING([--enable-multiarch],
870 [enable support for multiarch paths])],
871 [case "${enableval}" in
872 yes|no|auto) enable_multiarch=$enableval;;
873 *) AC_MSG_ERROR(bad value ${enableval} given for --enable-multiarch option) ;;
874 esac], [enable_multiarch=auto])
875 if test x${enable_multiarch} = xauto; then
876 if test x${with_native_system_header_dir} != x; then
877 ma_msg_suffix=", disabled auto check (configured with --native-system-header-dir)"
880 if test x$host != x$target && test "x$with_sysroot" = x; then
881 ma_msg_suffix=", disabled auto check (cross build configured without --with-sysroot)"
885 if test x${enable_multiarch} = xyes; then
886 AC_DEFINE(ENABLE_MULTIARCH, 1, [If --with-multiarch option is used])
888 AC_MSG_CHECKING(for multiarch configuration)
889 AC_SUBST(enable_multiarch)
890 AC_MSG_RESULT($enable_multiarch$ma_msg_suffix)
892 # needed for setting the multiarch name for soft-float/hard-float ABIs
896 # default stack clash protection guard size as power of twos in bytes.
897 # Please keep these in sync with params.def.
901 # Keep the default value when the option is not used to 0, this allows us to
902 # distinguish between the cases where the user specifially set a value via
903 # configure and when the normal default value is used.
904 AC_ARG_WITH(stack-clash-protection-guard-size,
905 [AS_HELP_STRING([--with-stack-clash-protection-guard-size=size],
906 [Set the default stack clash protection guard size for specific targets as a power of two in bytes.])],
907 [DEFAULT_STK_CLASH_GUARD_SIZE="$with_stack_clash_protection_guard_size"], [DEFAULT_STK_CLASH_GUARD_SIZE=0])
908 if test $DEFAULT_STK_CLASH_GUARD_SIZE -ne 0 \
909 && (test $DEFAULT_STK_CLASH_GUARD_SIZE -lt $stk_clash_min \
910 || test $DEFAULT_STK_CLASH_GUARD_SIZE -gt $stk_clash_max); then
911 AC_MSG_ERROR(m4_normalize([
912 Invalid value $DEFAULT_STK_CLASH_GUARD_SIZE for --with-stack-clash-protection-guard-size. \
913 Must be between $stk_clash_min and $stk_clash_max.]))
916 AC_DEFINE_UNQUOTED(DEFAULT_STK_CLASH_GUARD_SIZE, $DEFAULT_STK_CLASH_GUARD_SIZE,
917 [Define to larger than zero set the default stack clash protector size.])
919 # Specify the number of splits of match.pd to generate.
920 AC_ARG_WITH(matchpd-partitions,
921 [AS_HELP_STRING([--with-matchpd-partitions=num],
922 [Set the number of partitions to make for gimple and generic when splitting match.pd. [default=10]])],
923 [DEFAULT_MATCHPD_PARTITIONS="$with_matchpd_partitions"], [DEFAULT_MATCHPD_PARTITIONS=10])
924 if (test $DEFAULT_MATCHPD_PARTITIONS -lt 1); then
925 AC_MSG_ERROR(m4_normalize([
926 Invalid value $DEFAULT_MATCHPD_PARTITIONS for --with-matchpd-partitions. \
927 Cannot be negative.]))
930 AC_SUBST(DEFAULT_MATCHPD_PARTITIONS)
932 # Specify the number of splits of insn-emit.cc and insn-recog.cc to generate.
933 AC_ARG_WITH(insnemit-partitions,
934 [AS_HELP_STRING([--with-insnemit-partitions=num],
935 [Set the number of partitions of insn-emit.cc for genemit and genrecog to create. [default=10]])],
936 [DEFAULT_INSNEMIT_PARTITIONS="$with_insnemit_partitions"], [DEFAULT_INSNEMIT_PARTITIONS=10])
937 if (test $DEFAULT_INSNEMIT_PARTITIONS -lt 1); then
938 AC_MSG_ERROR(m4_normalize([
939 Invalid value $DEFAULT_INSNEMIT_PARTITIONS for --with-insnemit-partitions. \
940 Cannot be negative.]))
943 AC_SUBST(DEFAULT_INSNEMIT_PARTITIONS)
945 # Enable __cxa_atexit for C++.
946 AC_ARG_ENABLE(__cxa_atexit,
947 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
950 # Enable C extension for decimal float if target supports it.
951 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
953 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
954 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
955 [Define to 1 to enable decimal float extension to C.])
957 # Use default_decimal_float for dependency.
958 enable_decimal_float=$default_decimal_float
960 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
961 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
962 [Define to 1 to specify that we are using the BID decimal floating
963 point format instead of DPD])
965 # Enable C extension for fixed-point arithmetic.
966 AC_ARG_ENABLE(fixed-point,
967 [AS_HELP_STRING([--enable-fixed-point],
968 [enable fixed-point arithmetic extension to C])],
973 enable_fixed_point=yes
977 enable_fixed_point=yes
980 enable_fixed_point=yes
983 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
984 enable_fixed_point=no
988 AC_SUBST(enable_fixed_point)
990 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
991 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
992 [Define to 1 to enable fixed-point arithmetic extension to C.])
995 # Pass with no value to take the default
996 # Pass with a value to specify a thread package
997 AC_ARG_ENABLE(threads,
998 [AS_HELP_STRING([[--enable-threads[=LIB]]],
999 [enable thread usage for target GCC,
1000 using LIB thread package])],,
1001 [enable_threads=''])
1004 [AS_HELP_STRING([--enable-tls],
1005 [enable or disable generation of tls code
1006 overriding the assembler check for tls support])],
1010 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
1011 Valid choices are 'yes' and 'no'.]) ;;
1015 AC_ARG_ENABLE(vtable-verify,
1016 [AS_HELP_STRING([--enable-vtable-verify],
1017 [enable vtable verification feature])],,
1018 [enable_vtable_verify=no])
1019 vtable_verify=`if test x$enable_vtable_verify = xyes; then echo 1; else echo 0; fi`
1020 AC_DEFINE_UNQUOTED(ENABLE_VTABLE_VERIFY, $vtable_verify,
1021 [Define 0/1 if vtable verification feature is enabled.])
1023 AC_ARG_ENABLE(analyzer,
1024 [AS_HELP_STRING([--disable-analyzer],
1025 [disable -fanalyzer static analyzer])],
1026 if test x$enable_analyzer = xno; then
1032 AC_DEFINE_UNQUOTED(ENABLE_ANALYZER, $analyzer,
1033 [Define 0/1 if static analyzer feature is enabled.])
1035 AC_ARG_ENABLE(objc-gc,
1036 [AS_HELP_STRING([--enable-objc-gc],
1037 [enable the use of Boehm's garbage collector with
1038 the GNU Objective-C runtime])],
1039 if test x$enable_objc_gc = xno; then
1047 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2 (or later)])],
1048 dwarf2="$with_dwarf2",
1051 AC_ARG_ENABLE(shared,
1052 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
1054 case $enable_shared in
1058 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
1059 for pkg in $enableval; do
1060 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
1067 ], [enable_shared=yes])
1068 AC_SUBST(enable_shared)
1071 [ --disable-gcov don't provide libgcov and related host tools],
1072 [], [case $target in
1081 AC_SUBST(enable_gcov)
1084 [AS_HELP_STRING([--with-specs=SPECS],
1085 [add SPECS to driver command-line processing])],
1086 [CONFIGURE_SPECS=$withval],
1089 AC_SUBST(CONFIGURE_SPECS)
1091 ACX_PKGVERSION([GCC])
1092 ACX_BUGURL([https://gcc.gnu.org/bugs/])
1094 # Allow overriding the default URL for documentation
1095 AC_ARG_WITH(documentation-root-url,
1096 AS_HELP_STRING([--with-documentation-root-url=URL],
1097 [Root for documentation URLs]),
1099 yes) AC_MSG_ERROR([documentation root URL not specified]) ;;
1100 no) AC_MSG_ERROR([documentation root URL not specified]) ;;
1101 */) DOCUMENTATION_ROOT_URL="$withval" ;;
1102 *) AC_MSG_ERROR([documentation root URL does not end with /]) ;;
1106 case "$gcc_version" in
1107 *.[123456].0) docroot_url_suffix="gcc-$gcc_version/";;
1108 *.[123456].1) docroot_url_suffix="gcc-`echo $gcc_version | sed 's/1$/0/'`/";;
1111 DOCUMENTATION_ROOT_URL="https://gcc.gnu.org/onlinedocs/$docroot_url_suffix"
1113 AC_DEFINE_UNQUOTED(DOCUMENTATION_ROOT_URL,"$DOCUMENTATION_ROOT_URL",
1114 [Define to the root for documentation URLs.])
1116 # Allow overriding the default URL for GCC changes
1117 AC_ARG_WITH(changes-root-url,
1118 AS_HELP_STRING([--with-changes-root-url=URL],
1119 [Root for GCC changes URLs]),
1121 yes) AC_MSG_ERROR([changes root URL not specified]) ;;
1122 no) AC_MSG_ERROR([changes root URL not specified]) ;;
1123 */) CHANGES_ROOT_URL="$withval" ;;
1124 *) AC_MSG_ERROR([changes root URL does not end with /]) ;;
1126 CHANGES_ROOT_URL="https://gcc.gnu.org/"
1128 AC_DEFINE_UNQUOTED(CHANGES_ROOT_URL,"$CHANGES_ROOT_URL",
1129 [Define to the root for URLs about GCC changes.])
1131 # Sanity check enable_languages in case someone does not run the toplevel
1132 # configure # script.
1133 AC_ARG_ENABLE(languages,
1134 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
1135 [case ,${enable_languages}, in
1137 # go safe -- we cannot be much sure without the toplevel
1139 # analysis of which target libs are present and usable
1143 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
1148 enable_languages=c,${enable_languages}
1151 [enable_languages=c])
1153 # If top-level libada has been disabled, then wire in install-gnatlib
1154 # invocation with `make install', so that one can build and install
1155 # the library manually with `make -C gcc all gnatlib gnattools install'.
1156 if test x"$enable_libada" = xno; then
1157 gnat_install_lib=gnat-install-lib
1161 AC_SUBST(gnat_install_lib)
1163 if test x"$enable_as_accelerator_for" != x; then
1164 AC_DEFINE(ACCEL_COMPILER, 1,
1165 [Define if this compiler should be built as the offload target compiler.])
1166 enable_as_accelerator=yes
1167 sedscript="s#${target_noncanonical}#${enable_as_accelerator_for}-accel-${target_noncanonical}#"
1168 program_transform_name=`echo $program_transform_name | sed $sedscript`
1169 accel_dir_suffix=/accel/${target_noncanonical}
1170 real_target_noncanonical=${enable_as_accelerator_for}
1172 AC_SUBST(enable_as_accelerator)
1173 AC_SUBST(real_target_noncanonical)
1174 AC_SUBST(accel_dir_suffix)
1176 for tgt in `echo $enable_offload_targets | sed 's/,/ /g'`; do
1177 tgt=`echo $tgt | sed 's/=.*//'`
1182 omp_device_property=omp-device-properties-gcn
1183 omp_device_property_tmake_file="${omp_device_property_tmake_file} \$(srcdir)/config/gcn/t-omp-device"
1186 omp_device_property=omp-device-properties-nvptx
1187 omp_device_property_tmake_file="${omp_device_property_tmake_file} \$(srcdir)/config/nvptx/t-omp-device"
1190 AC_MSG_ERROR([unknown offload target specified])
1193 omp_device_properties="${omp_device_properties} ${tgt}=${omp_device_property}"
1194 omp_device_property_deps="${omp_device_property_deps} ${omp_device_property}"
1196 if test x"$offload_targets" = x; then
1197 offload_targets=$tgt
1199 offload_targets="$offload_targets,$tgt"
1202 AC_SUBST(omp_device_properties)
1203 AC_SUBST(omp_device_property_deps)
1205 AC_DEFINE_UNQUOTED(OFFLOAD_TARGETS, "$offload_targets",
1206 [Define to offload targets, separated by commas.])
1207 if test x"$enable_offloading" != x; then
1208 AC_DEFINE(ENABLE_OFFLOADING, 1,
1209 [Define this to enable support for offloading.])
1211 AC_DEFINE(ENABLE_OFFLOADING, 0,
1212 [Define this to enable support for offloading.])
1215 if test "x$enable_offload_defaulted" = xyes; then
1216 AC_DEFINE(OFFLOAD_DEFAULTED, 1,
1217 [Define to 1 to if -foffload is defaulted])
1220 AC_ARG_WITH(multilib-list,
1221 [AS_HELP_STRING([--with-multilib-list], [select multilibs (AArch64, ARM, AVR, nvptx, OR1K, RISC-V, SH and x86-64 only)])],
1223 with_multilib_list=default)
1225 AC_ARG_WITH(multilib-generator,
1226 [AS_HELP_STRING([--with-multilib-generator], [Multi-libs configuration string (RISC-V only)])],
1228 with_multilib_generator=default)
1230 # -------------------------
1231 # Checks for other programs
1232 # -------------------------
1236 # Find some useful tools
1238 # We need awk to create options.cc and options.h.
1239 # Bail out if it's missing.
1241 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
1248 AC_SUBST(ranlib_flags)
1252 # See if cmp has --ignore-initial.
1253 gcc_AC_PROG_CMP_IGNORE_INITIAL
1255 # See if we have the mktemp command.
1256 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
1258 # See if makeinfo has been installed and is modern enough
1259 # that we can use it.
1260 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
1261 [GNU texinfo.* \([0-9][0-9.]*\)],
1262 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
1263 if test $gcc_cv_prog_makeinfo_modern = no; then
1265 *** Makeinfo is missing or too old.
1266 *** Info documentation will not be built.])
1271 AC_SUBST(BUILD_INFO)
1273 # Determine whether makeinfo supports the CONTENTS_OUTPUT_LOCATION variable.
1274 # If it does, we want to pass it to makeinfo in order to restore the old
1275 # behavior of @{summary,}contents placement.
1276 MAKEINFO_TOC_INLINE_FLAG=
1277 AS_IF([test x"$MAKEINFO" != x], [
1278 AC_CACHE_CHECK([for CONTENTS_OUTPUT_LOCATION support in $MAKEINFO],
1279 [gcc_cv_texi_add_toc_inline_flags], [
1280 # Detect the unknown variable CONTENTS_OUTPUT_LOCATION warning
1281 if "$MAKEINFO" -c CONTENTS_OUTPUT_LOCATION=inline </dev/null 2>&1 \
1282 | grep CONTENTS_OUTPUT_LOCATION >/dev/null; then
1283 gcc_cv_texi_add_toc_inline_flags=no
1285 gcc_cv_texi_add_toc_inline_flags=yes
1288 if test x"$gcc_cv_texi_add_toc_inline_flags" = xyes; then
1289 MAKEINFO_TOC_INLINE_FLAG='-c CONTENTS_OUTPUT_LOCATION=inline'
1292 AC_SUBST([MAKEINFO_TOC_INLINE_FLAG])
1294 # Is pod2man recent enough to regenerate manpages?
1295 AC_MSG_CHECKING([for recent Pod::Man])
1296 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
1298 GENERATED_MANPAGES=generated-manpages
1303 AC_SUBST(GENERATED_MANPAGES)
1305 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
1308 dnl Don't use AC_PROG_LEX; we insist on flex.
1309 dnl LEXLIB is not useful in gcc.
1310 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
1313 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
1316 ACX_CHECK_PROG_VER(PYTHON, python3, --version,
1317 [Python.* \([0-9][0-9.]*\)],
1318 [3.[4-9]*|3.[1-9][0-9]*|[4-9].*|[1-9][0-9]*])
1319 if test $gcc_cv_prog_python3_modern = no; then
1321 *** Python3 is missing.
1322 *** Documentation for modula-2 will not include the target SYSTEM module.])
1327 AC_SUBST(HAVE_PYTHON)
1329 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
1330 # check for build == host before using them.
1333 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
1334 && test -d ../binutils ; then
1335 NM='../binutils/nm-new'
1337 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
1341 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
1342 && test -d ../binutils ; then
1345 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
1348 # The jit documentation looks better if built with sphinx, but can be
1349 # built with texinfo if sphinx is not available.
1350 # Set "doc_build_sys" to "sphinx" or "texinfo" accordingly.
1351 AC_CHECK_PROG(doc_build_sys, sphinx-build, sphinx, texinfo)
1353 # --------------------
1354 # Checks for C headers
1355 # --------------------
1357 # Need to reject headers which give warnings, so that the -Werror bootstrap
1358 # works later. *sigh* This needs to come before all header checks.
1365 AC_HEADER_TIOCGWINSZ
1366 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
1367 fcntl.h ftw.h unistd.h sys/auxv.h sys/file.h sys/time.h sys/mman.h \
1368 sys/resource.h sys/param.h sys/times.h sys/stat.h sys/locking.h \
1369 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
1371 # Check for thread headers.
1372 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
1373 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
1375 # These tests can't be done till we know if we have limits.h.
1379 # ----------------------
1380 # Checks for C++ headers
1381 # ----------------------
1383 dnl Autoconf will give an error in the configure script if there is no
1384 dnl C++ preprocessor. Hack to prevent that.
1385 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
1387 m4_popdef([AC_MSG_ERROR])[]dnl
1389 AC_CHECK_HEADERS(unordered_map)
1390 AC_CHECK_HEADERS(tr1/unordered_map)
1391 AC_CHECK_HEADERS(ext/hash_map)
1394 # Dependency checking.
1398 AC_CONFIG_COMMANDS([gccdepdir],[
1399 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR
1400 for lang in $subdirs c-family common analyzer text-art rtl-ssa sym-exec
1402 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs $lang/$DEPDIR
1403 done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR])
1405 ZW_PROG_COMPILER_DEPENDENCIES([CXX])
1412 # These libraries may be used by collect2.
1413 # We may need a special search path to get them linked.
1414 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
1416 for libs in '' -lld -lmld \
1417 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
1418 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1421 AC_TRY_LINK_FUNC(ldopen,
1422 [gcc_cv_collect2_libs="$libs"; break])
1425 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1426 case $gcc_cv_collect2_libs in
1428 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1430 AC_SUBST(COLLECT2_LIBS)
1432 # When building Ada code on Alpha, we need exc_resume which is usually in
1433 # -lexc. So test for it.
1436 AC_SEARCH_LIBS(exc_resume, exc)
1439 AC_SUBST(GNAT_LIBEXC)
1441 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1444 AC_SEARCH_LIBS(kstat_open, kstat)
1445 EXTRA_GCC_LIBS="$LIBS"
1447 AC_SUBST(EXTRA_GCC_LIBS)
1449 # Some systems put ldexp and frexp in libm instead of libc; assume
1450 # they're both in the same place. jcf-dump needs them.
1453 AC_SEARCH_LIBS(ldexp, m)
1458 # Some systems need dlopen
1461 AC_SEARCH_LIBS(dlopen, dl)
1466 # Use <inttypes.h> only if it exists,
1467 # doesn't clash with <sys/types.h>, declares intmax_t and defines
1469 AC_MSG_CHECKING(for inttypes.h)
1470 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1471 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1472 [[#define __STDC_FORMAT_MACROS
1473 #include <sys/types.h>
1474 #include <inttypes.h>]],
1479 [gcc_cv_header_inttypes_h=yes],
1480 [gcc_cv_header_inttypes_h=no])])
1481 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1482 if test $gcc_cv_header_inttypes_h = yes; then
1483 AC_DEFINE(HAVE_INTTYPES_H, 1,
1484 [Define if you have a working <inttypes.h> header file.])
1487 # Look for the ZSTD package.
1490 AC_SUBST(ZSTD_INCLUDE)
1494 AC_SUBST(ZSTD_CPPFLAGS)
1495 AC_SUBST(ZSTD_LDFLAGS)
1497 [AS_HELP_STRING([--with-zstd=PATH],
1498 [specify prefix directory for installed zstd library.
1499 Equivalent to --with-zstd-include=PATH/include
1500 plus --with-zstd-lib=PATH/lib])])
1501 AC_ARG_WITH(zstd-include,
1502 [AS_HELP_STRING([--with-zstd-include=PATH],
1503 [specify directory for installed zstd include files])])
1504 AC_ARG_WITH(zstd-lib,
1505 [AS_HELP_STRING([--with-zstd-lib=PATH],
1506 [specify directory for the installed zstd library])])
1507 case "x$with_zstd" in
1513 *) ZSTD_INCLUDE=$with_zstd/include
1514 ZSTD_LIB=$with_zstd/lib
1518 if test "x$with_zstd" != xno; then
1519 if test "x$with_zstd_include" != x; then
1520 ZSTD_INCLUDE=$with_zstd_include
1522 if test "x$with_zstd_lib" != x; then
1523 ZSTD_LIB=$with_zstd_lib
1525 if test "x$ZSTD_INCLUDE" != x \
1526 && test "x$ZSTD_INCLUDE" != xno; then
1527 ZSTD_CPPFLAGS=-I$ZSTD_INCLUDE
1529 if test "x$ZSTD_LIB" != x \
1530 && test "x$ZSTD_LIB" != xno; then
1531 ZSTD_LDFLAGS=-L$ZSTD_LIB
1534 CXXFLAGS="$CXXFLAGS $ZSTD_CPPFLAGS"
1535 LDFLAGS="$LDFLAGS $ZSTD_LDFLAGS"
1537 # LTO can use zstd compression algorithm
1540 AC_SEARCH_LIBS(ZSTD_compress, zstd,, gcc_cv_header_zstd_h=no)
1545 AC_MSG_CHECKING(for zstd.h)
1546 AC_CACHE_VAL(gcc_cv_header_zstd_h,
1547 # We require version 1.3.0 or later. This is the first version that has
1548 # ZSTD_getFrameContentSize.
1549 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1551 #if ZSTD_VERSION_NUMBER < 10300
1552 #error "need zstd 1.3.0 or better"
1554 [gcc_cv_header_zstd_h=yes],
1555 [gcc_cv_header_zstd_h=no])])
1556 AC_MSG_RESULT($gcc_cv_header_zstd_h)
1557 if test $gcc_cv_header_zstd_h = yes; then
1558 AC_DEFINE(HAVE_ZSTD_H, 1,
1559 [Define if you have a working <zstd.h> header file.])
1560 elif test "x$with_zstd" != x; then
1561 as_fn_error $? "Unable to find zstd.h. See config.log for details." "$LINENO" 5
1565 dnl Disabled until we have a complete test for buggy enum bitfields.
1566 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1568 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1569 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1570 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1571 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1572 putchar_unlocked putc_unlocked)
1573 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoq \
1574 popen sysconf strsignal getrusage nl_langinfo \
1575 gettimeofday mbstowcs wcswidth mmap posix_fallocate setlocale \
1576 gcc_UNLOCKED_FUNCS madvise mallinfo mallinfo2 fstatat getauxval \
1577 clock_gettime munmap msync)
1579 # At least for glibc, clock_gettime is in librt. But don't pull that
1580 # in if it still doesn't give us the function we want.
1581 if test $ac_cv_func_clock_gettime = no; then
1582 AC_CHECK_LIB(rt, clock_gettime,
1584 AC_DEFINE(HAVE_CLOCK_GETTIME, 1,
1585 [Define to 1 if you have the `clock_gettime' function.])])
1588 if test x$ac_cv_func_mbstowcs = xyes; then
1589 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1590 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1596 [gcc_cv_func_mbstowcs_works=yes],
1597 [gcc_cv_func_mbstowcs_works=no],
1598 [gcc_cv_func_mbstowcs_works=yes])])
1599 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1600 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1601 [Define this macro if mbstowcs does not crash when its
1602 first argument is NULL.])
1606 AC_CHECK_TYPE(ssize_t, int)
1607 AC_CHECK_TYPE(caddr_t, char *)
1608 AC_CHECK_TYPE(sighander_t,
1609 AC_DEFINE(HAVE_SIGHANDLER_T, 1,
1610 [Define if <sys/signal.h> defines sighandler_t]),
1613 GCC_AC_FUNC_MMAP_BLACKLIST
1617 # Under VMS, vfork works very differently than on Unix. The standard test
1618 # won't work, and it isn't easily adaptable. It makes more sense to
1620 ac_cv_func_vfork_works=yes
1627 # Until we have in-tree GNU iconv:
1629 if test -f "$LTLIBICONV"; then
1630 LIBICONV_DEP=$LTLIBICONV
1632 AC_SUBST(LIBICONV_DEP)
1638 # We will need to find libiberty.h and ansidecl.h
1639 saved_CFLAGS="$CFLAGS"
1640 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1641 saved_CXXFLAGS="$CXXFLAGS"
1642 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1644 # gcc_AC_CHECK_DECLS doesn't support overloaded functions, so use the
1645 # normal autoconf function for these. But force definition of
1646 # HAVE_DECL_BASENAME like gcc_AC_CHECK_DECLS does, to suppress the bizarre
1647 # basename handling in libiberty.h.
1648 AC_CHECK_DECLS([basename(const char*), strstr(const char*,const char*)], , ,[
1649 #undef HAVE_DECL_BASENAME
1650 #define HAVE_DECL_BASENAME 1
1651 #include "ansidecl.h"
1652 #include "system.h"])
1654 gcc_AC_CHECK_DECLS(getenv atol atoll asprintf sbrk abort atof getcwd getwd \
1655 madvise mkstemps stpcpy strnlen strsignal strverscmp \
1656 strtol strtoul strtoll strtoull setenv unsetenv \
1657 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1658 free getopt clock getpagesize ffs fmemopen gcc_UNLOCKED_FUNCS, , ,[
1659 #include "ansidecl.h"
1660 #include "system.h"])
1662 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1663 #include "ansidecl.h"
1665 #ifdef HAVE_SYS_RESOURCE_H
1666 #include <sys/resource.h>
1670 gcc_AC_CHECK_DECLS(mallinfo mallinfo2, , ,[
1671 #include "ansidecl.h"
1673 #ifdef HAVE_MALLOC_H
1678 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1679 #include "ansidecl.h"
1681 #ifdef HAVE_SYS_RESOURCE_H
1682 #include <sys/resource.h>
1684 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1685 [Define to `long' if <sys/resource.h> doesn't define.])])
1687 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1688 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1689 # in collect2.cc, <fcntl.h> isn't visible, but the configure test below needs
1690 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1691 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1692 #include "ansidecl.h"
1701 gcc_AC_CHECK_DECLS(times, , ,[
1702 #include "ansidecl.h"
1704 #ifdef HAVE_SYS_TIMES_H
1705 #include <sys/times.h>
1709 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1710 #include "ansidecl.h"
1715 # More time-related stuff.
1716 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1717 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1718 #include "ansidecl.h"
1720 #ifdef HAVE_SYS_TIMES_H
1721 #include <sys/times.h>
1723 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1724 if test $ac_cv_struct_tms = yes; then
1725 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1726 [Define if <sys/times.h> defines struct tms.])
1729 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1730 # revisit after autoconf 2.50.
1731 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1732 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1733 #include "ansidecl.h"
1735 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1736 if test $gcc_cv_type_clock_t = yes; then
1737 AC_DEFINE(HAVE_CLOCK_T, 1,
1738 [Define if <time.h> defines clock_t.])
1741 # Check if F_SETLKW is supported by fcntl.
1742 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1743 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1744 #include <fcntl.h>]], [[
1750 return fcntl (1, F_SETLKW, &fl);]])],
1751 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1752 if test $ac_cv_f_setlkw = yes; then
1753 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1754 [Define if F_SETLKW supported by fcntl.])
1757 # Check if O_CLOEXEC is defined by fcntl
1758 AC_CACHE_CHECK(for O_CLOEXEC, ac_cv_o_cloexec, [
1759 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1760 #include <fcntl.h>]], [[
1761 return open ("/dev/null", O_RDONLY | O_CLOEXEC);]])],
1762 [ac_cv_o_cloexec=yes],[ac_cv_o_cloexec=no])])
1763 if test $ac_cv_o_cloexec = yes; then
1764 AC_DEFINE(HOST_HAS_O_CLOEXEC, 1,
1765 [Define if O_CLOEXEC supported by fcntl.])
1768 # Check if O_NONBLOCK is defined by fcntl
1769 AC_CHECK_HEADERS([fcntl.h])
1770 AC_CHECK_DECL(O_NONBLOCK,,,[#include <fcntl.h>])
1771 if test $ac_cv_have_decl_O_NONBLOCK = yes; then
1772 AC_DEFINE(HOST_HAS_O_NONBLOCK, 1,
1773 [Define if O_NONBLOCK supported by fcntl.])
1777 # C++ Modules would like some networking features to provide the mapping
1778 # server. You can still use modules without them though.
1779 # The following network-related checks could probably do with some
1780 # Windows and other non-linux defenses and checking.
1782 # Local socket connectivity wants AF_UNIX networking
1783 # Check for AF_UNIX networking
1784 AC_CACHE_CHECK(for AF_UNIX, ac_cv_af_unix, [
1785 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1786 #include <sys/types.h>
1787 #include <sys/socket.h>
1789 #include <netinet/in.h>]],[[
1791 un.sun_family = AF_UNSPEC;
1792 int fd = socket (AF_UNIX, SOCK_STREAM, 0);
1793 connect (fd, (sockaddr *)&un, sizeof (un));]])],
1794 [ac_cv_af_unix=yes],
1795 [ac_cv_af_unix=no])])
1796 if test $ac_cv_af_unix = yes; then
1797 AC_DEFINE(HAVE_AF_UNIX, 1,
1798 [Define if AF_UNIX supported.])
1801 # Remote socket connectivity wants AF_INET6 networking
1802 # Check for AF_INET6 networking
1803 AC_CACHE_CHECK(for AF_INET6, ac_cv_af_inet6, [
1804 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1805 #include <sys/types.h>
1806 #include <sys/socket.h>
1807 #include <netinet/in.h>
1808 #include <netdb.h>]],[[
1810 in6.sin6_family = AF_UNSPEC;
1811 struct addrinfo *addrs = 0;
1812 struct addrinfo hints;
1814 hints.ai_family = AF_INET6;
1815 hints.ai_socktype = SOCK_STREAM;
1816 hints.ai_protocol = 0;
1817 hints.ai_canonname = 0;
1820 int e = getaddrinfo ("localhost", 0, &hints, &addrs);
1821 const char *str = gai_strerror (e);
1822 freeaddrinfo (addrs);
1823 int fd = socket (AF_INET6, SOCK_STREAM, 0);
1824 connect (fd, (sockaddr *)&in6, sizeof (in6));]])],
1825 [ac_cv_af_inet6=yes],
1826 [ac_cv_af_inet6=no])])
1827 if test $ac_cv_af_inet6 = yes; then
1828 AC_DEFINE(HAVE_AF_INET6, 1,
1829 [Define if AF_INET6 supported.])
1832 # Check if _LK_LOCK is supported by _locking
1833 AC_CACHE_CHECK(for _LK_LOCK, ac_cv_lk_lock, [
1834 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1836 #include <sys/locking.h>]], [[
1838 return _locking (fd, _LK_LOCK, 0);]])],
1839 [ac_cv_lk_lock=yes],[ac_cv_lk_lock=no])])
1840 if test $ac_cv_lk_lock = yes; then
1841 AC_DEFINE(HOST_HAS_LK_LOCK, 1,
1842 [Define if _LK_LOC supported by _locking.])
1845 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1846 CFLAGS="$saved_CFLAGS"
1847 CXXFLAGS="$saved_CXXFLAGS"
1849 # mkdir takes a single argument on some systems.
1850 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1858 # With Setjmp/Longjmp based exception handling.
1859 AC_ARG_ENABLE(sjlj-exceptions,
1860 [AS_HELP_STRING([--enable-sjlj-exceptions],
1861 [arrange to use setjmp/longjmp exception handling])],
1862 [force_sjlj_exceptions=yes],
1865 force_sjlj_exceptions=yes
1869 force_sjlj_exceptions=no
1872 if test $force_sjlj_exceptions = yes; then
1873 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1874 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1875 [Define 0/1 to force the choice for exception handling model.])
1878 # Windows32 UTF-8 manifest support for running the driver and compiler
1879 # executables with the UTF-8 active code page on mingw hosts.
1880 # Non-mingw hosts ignore this option.
1881 # The shell variables this sets are picked up from the mingw branches
1882 # of config.host so they have to be set before it gets sourced.
1883 AC_ARG_ENABLE(win32-utf8-manifest,
1884 [AS_HELP_STRING([--disable-win32-utf8-manifest],
1885 [disable embedding a utf8 manifest on mingw hosts])
1886 AS_HELP_STRING([--enable-win32-utf8-manifest],
1887 [enable embedding a utf8 manifest on mingw hosts (default)])],,)
1889 if test "x$enable_win32_utf8_manifest" != xno; then
1890 host_xmake_mingw=i386/x-mingw32-utf8
1891 host_extra_gcc_objs_mingw=utf8rc-mingw32.o
1892 host_extra_objs_mingw=utf8-mingw32.o
1895 # --------------------------------------------------------
1896 # Build, host, and target specific configuration fragments
1897 # --------------------------------------------------------
1899 # Collect build-machine-specific information.
1900 . ${srcdir}/config.build || exit 1
1902 # Collect host-machine-specific information.
1903 . ${srcdir}/config.host || exit 1
1907 # Collect target-machine-specific information.
1908 . ${srcdir}/config.gcc || exit 1
1910 extra_objs="${host_extra_objs} ${extra_objs}"
1911 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1913 # Default the target-machine variables that were not explicitly set.
1914 if test x"$tm_file" = x
1915 then tm_file=$cpu_type/$cpu_type.h; fi
1917 if test x"$extra_headers" = x
1918 then extra_headers=; fi
1920 if test x$md_file = x
1921 then md_file=$cpu_type/$cpu_type.md; fi
1923 if test x$out_file = x
1924 then out_file=$cpu_type/$cpu_type.cc; fi
1926 if test x"$tmake_file" = x
1927 then tmake_file=$cpu_type/t-$cpu_type
1930 # Support --enable-initfini-array.
1931 if test x$enable_initfini_array != xno; then
1932 tm_file="${tm_file} initfini-array.h"
1935 if test x"$dwarf2" = xyes
1936 then tm_file="$tm_file tm-dwarf2.h"
1939 # Say what files are being used for the output code and MD file.
1940 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1941 echo "Using \`$srcdir/config/$md_file' as machine description file."
1943 # If any of the xm_file variables contain nonexistent files, warn
1944 # about them and drop them.
1947 for x in $build_xm_file; do
1948 if test -f $srcdir/config/$x
1950 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1956 for x in $host_xm_file; do
1957 if test -f $srcdir/config/$x
1959 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1965 for x in $xm_file; do
1966 if test -f $srcdir/config/$x
1968 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1974 for f in $tm_file; do
1977 if test $count = ax; then
1978 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1980 echo "Using the following target machine macro files:"
1981 for f in $tm_file; do
1982 echo " $srcdir/config/$f"
1986 if test x$use_long_long_for_widest_fast_int = xyes; then
1987 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1988 [Define to 1 if the 'long long' type is wider than 'long' but still
1989 efficiently supported by the host hardware.])
1992 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1993 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1995 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1996 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1999 for f in $host_xm_file; do
2002 if test $count = a; then
2004 elif test $count = ax; then
2005 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
2007 echo "Using the following host machine macro files:"
2008 for f in $host_xm_file; do
2009 echo " $srcdir/config/$f"
2012 echo "Using ${out_host_hook_obj} for host machine hooks."
2014 if test "$host_xm_file" != "$build_xm_file"; then
2016 for f in $build_xm_file; do
2019 if test $count = a; then
2021 elif test $count = ax; then
2022 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
2024 echo "Using the following build machine macro files:"
2025 for f in $build_xm_file; do
2026 echo " $srcdir/config/$f"
2031 if test -n "$configured_native_system_header_dir"; then
2032 native_system_header_dir=$configured_native_system_header_dir
2034 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
2035 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
2039 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
2040 gcc_cv_mcontext_underscores,
2041 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
2042 #include <sys/cdefs.h>
2043 #include <sys/signal.h>
2044 #include <ucontext.h>
2045 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
2047 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
2048 if test $gcc_cv_mcontext_underscores = yes; then
2049 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
2050 [mcontext_t fields start with __])
2059 # Check if a valid thread package
2060 case ${enable_threads} in
2063 target_thread_file='single'
2067 target_thread_file='single'
2069 aix | dce | lynx | mipssde | posix | rtems | \
2070 single | tpf | vxworks | win32 | mcf)
2071 target_thread_file=${enable_threads}
2074 echo "${enable_threads} is an unknown thread package" 1>&2
2079 if test x${thread_file} = x; then
2080 # No thread file set by target-specific clauses in config.gcc,
2081 # so use file chosen by default logic above
2082 thread_file=${target_thread_file}
2090 if test x$enable___cxa_atexit = xyes || \
2091 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
2092 if test x$host = x$target; then
2094 # mingw32 doesn't have __cxa_atexit but uses atexit registration
2095 # keyed to flag_use_cxa_atexit
2103 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
2104 [echo "__cxa_atexit can't be enabled on this target"])
2108 # We can't check for __cxa_atexit when building a cross, so assume
2112 if test x$use_cxa_atexit = xyes; then
2113 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
2114 [Define if you want to use __cxa_atexit, rather than atexit, to
2115 register C++ destructors for local statics and global objects.
2116 This is essential for fully standards-compliant handling of
2117 destructors, but requires __cxa_atexit in libc.])
2121 # Look for a file containing extra machine modes.
2122 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
2123 extra_modes_file='$(srcdir)'/config/${extra_modes}
2124 AC_SUBST(extra_modes_file)
2125 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
2126 [Define to the name of a file containing a list of extra machine modes
2127 for this architecture.])
2130 # Convert extra_options into a form suitable for Makefile use.
2133 for f in $extra_options; do
2134 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
2135 all_opt_files="$all_opt_files $srcdir/config/$f"
2137 AC_SUBST(extra_opt_files)
2139 # auto-host.h is the file containing items generated by autoconf and is
2140 # the first file included by config.h.
2141 # If host=build, it is correct to have bconfig include auto-host.h
2142 # as well. If host!=build, we are in error and need to do more
2143 # work to find out the build config parameters.
2144 if test x$host = x$build
2146 build_auto=auto-host.h
2147 HAVE_AUTO_BUILD='# '
2149 # We create a subdir, then run autoconf in the subdir.
2150 # To prevent recursion we set host and build for the new
2151 # invocation of configure to the build for this invocation
2158 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
2159 *) realsrcdir=../${srcdir};;
2161 # Clearing GMPINC is necessary to prevent host headers being
2162 # used by the build compiler. Defining GENERATOR_FILE stops
2163 # system.h from including gmp.h.
2164 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
2165 CXX="${CXX_FOR_BUILD}" CXXFLAGS="${CXXFLAGS_FOR_BUILD}" \
2166 LD="${LD_FOR_BUILD}" LDFLAGS="${LDFLAGS_FOR_BUILD}" \
2167 GMPINC="" CPPFLAGS="${CPPFLAGS_FOR_BUILD} -DGENERATOR_FILE" \
2168 ${realsrcdir}/configure \
2169 --enable-languages=${enable_languages-all} \
2170 ${enable_obsolete+--enable-obsolete="$enable_obsolete"} \
2171 ${enable_option_checking+--enable-option-checking="$enable_option_checking"} \
2172 --target=$target_alias --host=$build_alias \
2173 --build=$build_alias || exit # retaining $tempdir
2175 # We just finished tests for the build machine, so rename
2176 # the file auto-build.h in the gcc directory.
2177 mv auto-host.h ../auto-build.h
2180 build_auto=auto-build.h
2183 AC_SUBST(build_subdir)
2184 AC_SUBST(HAVE_AUTO_BUILD)
2186 tm_file="${tm_file} defaults.h"
2187 tm_p_file="${tm_p_file} tm-preds.h"
2188 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
2189 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
2190 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
2191 # put this back in temporarily.
2192 xm_file="auto-host.h ansidecl.h ${xm_file}"
2199 # Compile in configure arguments.
2200 if test -f configargs.h ; then
2201 # Being re-configured.
2202 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
2203 gcc_reconf_arguments=`echo "$gcc_config_arguments" | sed -e 's/^.*\( : (reconfigured) .*$\)/\1/'`
2204 if [ "$gcc_reconf_arguments" != " : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS" ]; then
2205 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
2208 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
2211 # Double all backslashes and backslash all quotes to turn
2212 # gcc_config_arguments into a C string.
2213 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
2214 $gcc_config_arguments
2216 gcc_config_arguments_str=`cat conftest.out`
2219 cat > configargs.h <<EOF
2220 /* Generated automatically. */
2221 static const char configuration_arguments[] = "$gcc_config_arguments_str";
2222 static const char thread_model[] = "$thread_file";
2224 static const struct {
2225 const char *name, *value;
2226 } configure_default_options[] = $configure_default_options;
2231 gcc_BASEVER=`cat $srcdir/BASE-VER`
2232 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
2233 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
2234 if test -f $srcdir/REVISION ; then
2235 gcc_REVISION=`cat $srcdir/REVISION`
2239 cat > plugin-version.h <<EOF
2240 #include "configargs.h"
2242 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
2243 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
2244 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
2245 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
2247 static char basever[] = "$gcc_BASEVER";
2248 static char datestamp[] = "$gcc_DATESTAMP";
2249 static char devphase[] = "$gcc_DEVPHASE";
2250 static char revision[] = "$gcc_REVISION";
2252 /* FIXME plugins: We should make the version information more precise.
2253 One way to do is to add a checksum. */
2255 static struct plugin_gcc_version gcc_version = {basever, datestamp,
2257 configuration_arguments};
2261 # Determine what GCC version number to use in filesystem paths.
2264 # Internationalization
2265 ZW_GNU_GETTEXT_SISTER_DIR
2267 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
2268 # -liconv on the link line twice.
2269 case "$LIBINTL" in *$LIBICONV*)
2273 AC_ARG_ENABLE(secureplt,
2274 [AS_HELP_STRING([--enable-secureplt],
2275 [enable -msecure-plt by default for PowerPC])],
2278 AC_ARG_ENABLE(mingw-wildcard,
2279 [AS_HELP_STRING([--enable-mingw-wildcard],
2280 [Set whether to expand wildcard on command-line.
2281 Default to platform configuration])],
2282 [],[enable_mingw_wildcard=platform])
2283 AS_IF([test x"$enable_mingw_wildcard" != xplatform ],
2284 [AC_DEFINE_UNQUOTED(MINGW_DOWILDCARD,
2285 $(test x"$enable_mingw_wildcard" = xno; echo $?),
2286 [Value to set mingw's _dowildcard to.])])
2288 AC_ARG_ENABLE(large-address-aware,
2289 [AS_HELP_STRING([--enable-large-address-aware],
2290 [Link mingw executables with --large-address-aware])])
2291 AS_IF([test x"$enable_large_address_aware" = xyes],
2292 [AC_DEFINE([MINGW_DEFAULT_LARGE_ADDR_AWARE], 1,
2293 [Define if we should link mingw executables with --large-address-aware])])
2295 AC_ARG_ENABLE(leading-mingw64-underscores,
2296 AS_HELP_STRING([--enable-leading-mingw64-underscores],
2297 [enable leading underscores on 64 bit mingw targets]),
2299 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
2300 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
2301 [Define if we should use leading underscore on 64 bit mingw targets])])
2304 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
2307 AC_ARG_ENABLE(frame-pointer,
2308 [AS_HELP_STRING([--enable-frame-pointer],
2309 [enable -fno-omit-frame-pointer by default for x86])], [],
2312 linux* | gnu* | darwin[[8912]]* | cygwin* | mingw*)
2313 # Enable -fomit-frame-pointer by default for these systems with DWARF2.
2314 enable_frame_pointer=no
2317 enable_frame_pointer=yes
2323 i[[34567]]86-*-* | x86_64-*-*)
2324 if test "x$enable_cld" = xyes; then
2325 tm_defines="${tm_defines} USE_IX86_CLD=1"
2327 if test "x$enable_frame_pointer" = xyes; then
2328 tm_defines="${tm_defines} USE_IX86_FRAME_POINTER=1"
2333 # Windows32 Registry support for specifying GCC installation paths.
2334 AC_ARG_ENABLE(win32-registry,
2335 [AS_HELP_STRING([--disable-win32-registry],
2336 [disable lookup of installation paths in the
2337 Registry on Windows hosts])
2338 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
2339 AS_HELP_STRING([--enable-win32-registry=KEY],
2340 [use KEY instead of GCC version as the last portion
2341 of the registry key])],,)
2344 win32 | pe | cygwin* | mingw32*)
2345 if test "x$enable_win32_registry" != xno; then
2346 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
2349 if test "x$enable_win32_registry" != xno; then
2350 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
2351 [Define to 1 if installation paths should be looked up in the Windows
2352 Registry. Ignored on non-Windows hosts.])
2354 if test "x$enable_win32_registry" != xyes \
2355 && test "x$enable_win32_registry" != x; then
2356 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
2357 [Define to be the last component of the Windows registry key under which
2358 to look for installation paths. The full key used will be
2359 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
2360 The default is the GCC version number.])
2366 # Get an absolute path to the GCC top-level source directory
2367 holddir=`${PWDCMD-pwd}`
2369 topdir=`${PWDCMD-pwd}`
2372 # Conditionalize the makefile for this host machine.
2374 for f in ${host_xmake_file}
2376 if test -f ${srcdir}/config/$f
2378 xmake_file="${xmake_file} \$(srcdir)/config/$f"
2382 # Conditionalize the makefile for this target machine.
2384 for f in ${tmake_file}
2386 if test -f ${srcdir}/config/$f
2388 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
2391 tmake_file="${tmake_file_}${omp_device_property_tmake_file}"
2393 out_object_file=`basename $out_file .cc`.o
2394 common_out_object_file=`basename $common_out_file .cc`.o
2396 tm_file_list="options.h"
2397 tm_include_list="options.h insn-constants.h"
2398 for f in $tm_file; do
2401 f=`echo $f | sed 's/^..//'`
2402 tm_file_list="${tm_file_list} $f"
2403 tm_include_list="${tm_include_list} $f"
2406 tm_file_list="${tm_file_list} \$(srcdir)/$f"
2407 tm_include_list="${tm_include_list} $f"
2410 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
2411 tm_include_list="${tm_include_list} config/$f"
2418 for f in $tm_p_file; do
2421 tm_p_file_list="${tm_p_file_list} $f"
2422 tm_p_include_list="${tm_p_include_list} $f"
2425 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
2426 tm_p_include_list="${tm_p_include_list} config/$f"
2432 for f in $tm_d_file; do
2435 tm_d_file_list="${tm_d_file_list} \$(srcdir)/config/$f"
2436 tm_d_include_list="${tm_d_include_list} config/$f"
2442 tm_rust_include_list=
2443 for f in $tm_rust_file; do
2446 tm_rust_file_list="${tm_rust_file_list} \$(srcdir)/config/$f"
2447 tm_rust_include_list="${tm_rust_include_list} config/$f"
2454 for f in $xm_file; do
2457 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
2458 xm_include_list="${xm_include_list} $f"
2461 xm_file_list="${xm_file_list} $f"
2462 xm_include_list="${xm_include_list} $f"
2465 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
2466 xm_include_list="${xm_include_list} config/$f"
2472 host_xm_include_list=
2473 for f in $host_xm_file; do
2476 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
2477 host_xm_include_list="${host_xm_include_list} $f"
2480 host_xm_file_list="${host_xm_file_list} $f"
2481 host_xm_include_list="${host_xm_include_list} $f"
2484 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
2485 host_xm_include_list="${host_xm_include_list} config/$f"
2491 for f in $build_xm_file; do
2494 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
2495 build_xm_include_list="${build_xm_include_list} $f"
2497 auto-build.h | auto-host.h )
2498 build_xm_file_list="${build_xm_file_list} $f"
2499 build_xm_include_list="${build_xm_include_list} $f"
2502 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
2503 build_xm_include_list="${build_xm_include_list} config/$f"
2508 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
2509 # cross-compiler which does not use the native headers and libraries.
2510 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
2511 CROSS= AC_SUBST(CROSS)
2512 ALL=all.internal AC_SUBST(ALL)
2513 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
2514 BUILD_SYSTEM_HEADER_DIR=$SYSTEM_HEADER_DIR AC_SUBST(BUILD_SYSTEM_HEADER_DIR)
2516 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x ||
2517 test x$build != x$host || test "x$with_build_sysroot" != x; then
2518 if test "x$with_build_sysroot" != x; then
2519 BUILD_SYSTEM_HEADER_DIR=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
2521 BUILD_SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2524 if test x$host != x$target
2526 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
2528 SYSTEM_HEADER_DIR=$BUILD_SYSTEM_HEADER_DIR
2529 elif test "x$TARGET_SYSTEM_ROOT" != x; then
2530 SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2533 if test "x$with_build_sysroot" != "x"; then
2534 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
2535 elif test "x$with_sysroot" = x; then
2536 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
2537 elif test "x$with_sysroot" = xyes; then
2538 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
2540 target_header_dir="${with_sysroot}${native_system_header_dir}"
2543 target_header_dir=${native_system_header_dir}
2546 # If this is a cross-compiler that does not
2547 # have its own set of headers then define
2550 # If this is using newlib, without having the headers available now,
2551 # then define inhibit_libc in LIBGCC2_CFLAGS.
2552 # This prevents libgcc2 from containing any code which requires libc
2554 : ${inhibit_libc=false}
2555 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
2556 test x$with_newlib = xyes ; } &&
2557 { test "x$with_headers" = xno || test ! -f "$target_header_dir/stdio.h"; } ; then
2560 AC_SUBST(inhibit_libc)
2562 # When building gcc with a cross-compiler, we need to adjust things so
2563 # that the generator programs are still built with the native compiler.
2564 # Also, we cannot run fixincludes.
2566 # These are the normal (build=host) settings:
2567 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
2568 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
2569 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
2570 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
2571 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
2572 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
2574 # And these apply if build != host, or we are generating coverage data
2575 if test x$build != x$host || test "x$coverage_flags" != x
2577 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS-$@) $(CFLAGS_FOR_BUILD)'
2578 BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS-$@) $(CXXFLAGS_FOR_BUILD)'
2579 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
2583 if test x$enable_fixincludes = xno;
2588 # Expand extra_headers to include complete path.
2589 # This substitutes for lots of t-* files.
2591 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
2592 for file in ${extra_headers} ; do
2593 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
2596 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
2597 if test x"$use_gcc_tgmath" = xyes
2598 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
2601 # Define collect2 in Makefile.
2602 case $host_can_use_collect2 in
2604 *) collect2='collect2$(exeext)' ;;
2606 AC_SUBST([collect2])
2608 # Add a definition of USE_COLLECT2 if system wants one.
2609 case $use_collect2 in
2610 no) use_collect2= ;;
2613 host_xm_defines="${host_xm_defines} USE_COLLECT2"
2614 xm_defines="${xm_defines} USE_COLLECT2"
2615 case $host_can_use_collect2 in
2617 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
2623 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
2624 [Define to the name of the LTO plugin DSO that must be
2625 passed to the linker's -plugin=LIB option.])
2627 # ---------------------------
2628 # Assembler & linker features
2629 # ---------------------------
2631 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
2632 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
2633 # However when ld-new is first executed from the build tree, libtool will
2634 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
2635 # to the build tree. While doing this we need to use the previous-stage
2636 # linker, or we have an infinite loop. The presence of a shell script as
2637 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
2638 # the gcc/collect-ld script. So we need to know how libtool works, or
2639 # exec-tool will fail.
2641 m4_defun([_LT_CONFIG_COMMANDS], [])
2644 AC_SUBST(enable_fast_install)
2646 AM_CONDITIONAL([ENABLE_DARWIN_AT_RPATH], [test x$enable_darwin_at_rpath = xyes])
2647 DARWIN_DO_EXTRA_RPATH=0
2648 AC_ARG_WITH(darwin-extra-rpath,
2650 [[--with-darwin-extra-rpath=[ARG]]],
2651 [Specify a runpath directory, additional to those provided by the compiler])],
2652 [if test x"$withval" != x; then
2653 DARWIN_ADD_RPATH="$withval"
2654 DARWIN_DO_EXTRA_RPATH=1
2656 AC_DEFINE_UNQUOTED(DARWIN_DO_EXTRA_RPATH, $DARWIN_DO_EXTRA_RPATH,
2657 [Should add an extra runpath directory])
2658 AC_DEFINE_UNQUOTED(DARWIN_ADD_RPATH, "$DARWIN_ADD_RPATH",
2659 [Specify a runpath directory, additional to those provided by the compiler])
2661 # Identify the assembler which will work hand-in-glove with the newly
2662 # built GCC, so that we can examine its features. This is the assembler
2663 # which will be driven by the driver program.
2665 # If build != host, and we aren't building gas in-tree, we identify a
2666 # build->target assembler and hope that it will have the same features
2667 # as the host->target assembler we'll be using.
2668 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
2670 m4_pattern_allow([AS_FOR_TARGET])dnl
2671 AS_VAR_SET_IF(gcc_cv_as,, [
2672 if test -x "$DEFAULT_ASSEMBLER"; then
2673 gcc_cv_as="$DEFAULT_ASSEMBLER"
2674 elif test -f $gcc_cv_as_gas_srcdir/configure.ac \
2675 && test -f ../gas/Makefile \
2676 && test x$build = x$host; then
2677 gcc_cv_as=../gas/as-new$build_exeext
2678 elif test -x as$build_exeext; then
2679 # Build using assembler in the current directory.
2680 gcc_cv_as=./as$build_exeext
2681 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
2682 gcc_cv_as="$AS_FOR_TARGET"
2684 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
2687 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
2688 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
2689 case "$ORIGINAL_AS_FOR_TARGET" in
2690 ./as | ./as$build_exeext) ;;
2691 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2696 [[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]],
2697 [case "${enableval}" in
2703 install_gold_as_default=no
2705 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
2706 [case "${enableval}" in
2708 install_gold_as_default=yes
2711 if test x${default_ld} != x; then
2712 install_gold_as_default=yes
2718 AC_MSG_ERROR([invalid --enable-gold argument])
2722 # Identify the linker which will work hand-in-glove with the newly
2723 # built GCC, so that we can examine its features. This is the linker
2724 # which will be driven by the driver program.
2726 # If build != host, and we aren't building gas in-tree, we identify a
2727 # build->target linker and hope that it will have the same features
2728 # as the host->target linker we'll be using.
2729 gcc_cv_gld_major_version=
2730 gcc_cv_gld_minor_version=
2731 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2732 gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold
2733 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2735 AS_VAR_SET_IF(gcc_cv_ld,, [
2736 if test -x "$DEFAULT_LINKER"; then
2737 gcc_cv_ld="$DEFAULT_LINKER"
2738 elif test $install_gold_as_default = yes \
2739 && test -f $gcc_cv_ld_gold_srcdir/configure.ac \
2740 && test -f ../gold/Makefile \
2741 && test x$build = x$host; then
2742 gcc_cv_ld=../gold/ld-new$build_exeext
2743 elif test -f $gcc_cv_ld_gld_srcdir/configure.ac \
2744 && test -f ../ld/Makefile \
2745 && test x$build = x$host; then
2746 gcc_cv_ld=../ld/ld-new$build_exeext
2747 elif test -x collect-ld$build_exeext; then
2748 # Build using linker in the current directory.
2749 gcc_cv_ld=./collect-ld$build_exeext
2750 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2751 gcc_cv_ld="$LD_FOR_TARGET"
2753 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2756 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2757 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2758 # if the PLUGIN_LD is set ld-new, just have it as ld
2759 # as that is the installed named.
2760 if test x$PLUGIN_LD_SUFFIX = xld-new \
2761 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2764 AC_ARG_WITH(plugin-ld,
2765 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2766 [if test x"$withval" != x; then
2767 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2768 PLUGIN_LD_SUFFIX="$withval"
2770 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2771 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2773 # Check to see if we are using gold instead of ld
2774 AC_MSG_CHECKING(whether we are using gold)
2776 if test x$gcc_cv_ld != x; then
2777 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2778 | grep "GNU gold" > /dev/null; then
2782 AC_MSG_RESULT($ld_is_gold)
2784 # Check to see if we are using mold instead of ld
2785 AC_MSG_CHECKING(whether we are using mold)
2787 if test x$gcc_cv_ld != x; then
2788 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2789 | grep "mold" > /dev/null; then
2793 AC_MSG_RESULT($ld_is_mold)
2796 AC_MSG_CHECKING(gold linker with split stack support as non default)
2797 # Check to see if default ld is not gold, but gold is
2798 # available and has support for split stack. If gcc was configured
2799 # with gold then no checking is done.
2801 if test x$ld_is_gold = xno && which ${gcc_cv_ld}.gold >/dev/null 2>&1; then
2803 # For platforms other than powerpc64*, enable as appropriate.
2806 ld_gold=`which ${gcc_cv_ld}.gold`
2807 # Make sure this gold has minimal split stack support
2808 if $ld_gold --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then
2809 ld_vers=`$ld_gold --version | sed 1q`
2810 gold_vers=`echo $ld_vers | sed -n \
2811 -e 's,^[[^)]]*[[ ]]\([[0-9]][[0-9]]*\.[[0-9]][[0-9]]*[[^)]]*\)) .*$,\1,p'`
2813 # check that the gold version contains the complete split stack support
2814 # on powerpc64 big and little endian
2816 case "$gold_vers" in
2817 2.25.[[1-9]]*|2.2[[6-9]][[.0-9]]*|2.[[3-9]][[.0-9]]*|[[3-9]].[[.0-9]]*) gold_non_default=yes
2819 *) gold_non_default=no
2825 if test $gold_non_default = yes; then
2826 AC_DEFINE(HAVE_GOLD_NON_DEFAULT_SPLIT_STACK, 1,
2827 [Define if the gold linker supports split stack and is available as a non-default])
2830 AC_MSG_RESULT($gold_non_default)
2832 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2833 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2834 case "$ORIGINAL_LD_FOR_TARGET" in
2835 ./collect-ld | ./collect-ld$build_exeext) ;;
2836 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2839 AC_MSG_CHECKING(what linker to use)
2840 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2841 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2842 # Single tree build which includes ld. We want to prefer it
2843 # over whatever linker top-level may have detected, since
2844 # we'll use what we're building after installation anyway.
2845 AC_MSG_RESULT(newly built ld)
2847 in_tree_ld_is_elf=no
2848 if (grep 'EMUL = .*elf' ../ld/Makefile \
2849 || grep 'EMUL = .*linux' ../ld/Makefile \
2850 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2851 in_tree_ld_is_elf=yes
2852 elif test "$ld_is_gold" = yes; then
2853 in_tree_ld_is_elf=yes
2855 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
2858 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2859 if test x$gcc_cv_gld_version != x; then
2863 case $gcc_cv_gld_version in
2866 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2869 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2870 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2872 ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext
2873 ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext
2875 AC_MSG_RESULT($gcc_cv_ld)
2877 gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext`
2878 ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext
2879 ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext
2882 AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET)
2883 AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET)
2885 # Figure out what nm we will be using.
2886 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2887 AS_VAR_SET_IF(gcc_cv_nm,, [
2888 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2889 && test -f ../binutils/Makefile \
2890 && test x$build = x$host; then
2891 gcc_cv_nm=../binutils/nm-new$build_exeext
2892 elif test -x nm$build_exeext; then
2893 gcc_cv_nm=./nm$build_exeext
2894 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2895 gcc_cv_nm="$NM_FOR_TARGET"
2897 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2900 AC_MSG_CHECKING(what nm to use)
2901 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2902 # Single tree build which includes binutils.
2903 AC_MSG_RESULT(newly built nm)
2906 AC_MSG_RESULT($gcc_cv_nm)
2910 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2911 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2912 case "$ORIGINAL_NM_FOR_TARGET" in
2913 ./nm | ./nm$build_exeext) ;;
2914 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2918 # Figure out what objdump we will be using.
2919 AS_VAR_SET_IF(gcc_cv_objdump,, [
2920 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2921 && test -f ../binutils/Makefile \
2922 && test x$build = x$host; then
2923 # Single tree build which includes binutils.
2924 gcc_cv_objdump=../binutils/objdump$build_exeext
2925 elif test -x objdump$build_exeext; then
2926 gcc_cv_objdump=./objdump$build_exeext
2927 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2928 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2930 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2933 AC_MSG_CHECKING(what objdump to use)
2934 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2935 # Single tree build which includes binutils.
2936 AC_MSG_RESULT(newly built objdump)
2937 elif test x$gcc_cv_objdump = x; then
2938 AC_MSG_RESULT(not found)
2940 AC_MSG_RESULT($gcc_cv_objdump)
2943 # Figure out what readelf we will be using.
2944 AS_VAR_SET_IF(gcc_cv_readelf,, [
2945 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2946 && test -f ../binutils/Makefile \
2947 && test x$build = x$host; then
2948 # Single tree build which includes binutils.
2949 gcc_cv_readelf=../binutils/readelf$build_exeext
2950 elif test -x readelf$build_exeext; then
2951 gcc_cv_readelf=./readelf$build_exeext
2952 elif ( set dummy $READELF_FOR_TARGET; test -x $[2] ); then
2953 gcc_cv_readelf="$READELF_FOR_TARGET"
2955 AC_PATH_PROG(gcc_cv_readelf, $READELF_FOR_TARGET)
2958 AC_MSG_CHECKING(what readelf to use)
2959 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2960 # Single tree build which includes binutils.
2961 AC_MSG_RESULT(newly built readelf)
2962 elif test x$gcc_cv_readelf = x; then
2963 AC_MSG_RESULT(not found)
2965 AC_MSG_RESULT($gcc_cv_readelf)
2968 # Figure out what otool we will be using.
2969 AS_VAR_SET_IF(gcc_cv_otool,, [
2970 if test -x otool$build_exeext; then
2971 gcc_cv_otool=./otool$build_exeext
2972 elif ( set dummy $OTOOL_FOR_TARGET; test -x $[2] ); then
2973 gcc_cv_otool="$OTOOL_FOR_TARGET"
2975 AC_PATH_PROG(gcc_cv_otool, $OTOOL_FOR_TARGET)
2978 AC_MSG_CHECKING(what otool to use)
2979 if test x$gcc_cv_otool = x; then
2980 AC_MSG_RESULT(not found)
2982 AC_MSG_RESULT($gcc_cv_otool)
2985 # Figure out the dsymutil we will use.
2986 AS_VAR_SET_IF(gcc_cv_dsymutil,, [
2987 if test -x "$DEFAULT_DSYMUTIL"; then
2988 gcc_cv_dsymutil="$DEFAULT_DSYMUTIL"
2989 elif test -x dsymutil$build_exeext; then
2990 gcc_cv_dsymutil=./dsymutil$build_exeext
2991 elif ( set dummy $DSYMUTIL_FOR_TARGET; test -x $[2] ); then
2992 gcc_cv_dsymutil=$DSYMUTIL_FOR_TARGET
2993 elif ( set dummy $DSYMUTIL; test -x $[2] ); then
2994 gcc_cv_dsymutil=$DSYMUTIL
2996 AC_PATH_PROG(gcc_cv_dsymutil, $DSYMUTIL_FOR_TARGET)
2999 ORIGINAL_DSYMUTIL_FOR_TARGET=$gcc_cv_dsymutil
3000 AC_SUBST(ORIGINAL_DSYMUTIL_FOR_TARGET)
3001 case "$ORIGINAL_DSYMUTIL_FOR_TARGET" in
3002 ./dsymutil | ./dsymutil$build_exeext) ;;
3003 *) AC_CONFIG_FILES(dsymutil:exec-tool.in, [chmod +x dsymutil]) ;;
3006 # Figure out what assembler alignment features are present.
3007 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,,
3010 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
3011 [Define if your assembler supports .balign and .p2align.])])
3013 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,,
3015 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
3016 [Define if your assembler supports specifying the maximum number
3017 of bytes to skip when using the GAS .p2align command.])])
3019 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,,
3021 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
3022 [Define if your assembler supports .literal16.])])
3024 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,,
3025 [conftest_label1: .word 0
3027 conftest_label2: .word 0
3029 [if test x$gcc_cv_nm != x; then
3030 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
3031 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
3032 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
3034 else gcc_cv_as_subsection_m1=yes
3036 rm -f conftest.nm1 conftest.nm2
3038 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
3039 [Define if your assembler supports .subsection and .subsection -1 starts
3040 emitting at the beginning of your section.])])
3042 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,,
3044 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
3046 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,,
3047 [ .weakref foobar, barfnot],,
3048 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
3050 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,,
3052 .NSUBSPA $CODE$,COMDAT],,
3053 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
3055 # .hidden needs to be supported in both the assembler and the linker,
3056 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
3057 # This is irritatingly difficult to feature test for; we have to check the
3058 # date string after the version number. If we've got an in-tree
3059 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
3061 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
3064 conftest_s=' .globl foobar,hidden'
3067 conftest_s=' .hidden foobar
3071 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,, [$conftest_s])
3074 # Darwin as has some visibility support, though with a different syntax.
3075 gcc_cv_as_hidden=yes
3079 gcc_GAS_CHECK_FEATURE([.base64], gcc_cv_as_base64,,
3081 .base64 "Tm9uIHB1ZG9yIGVzdCBuaWwgc2NpcmUsIHB1ZG9yIG5pbCBkaXNjZXJlIHZlbGxlLgo="],,
3082 [AC_DEFINE(HAVE_GAS_BASE64, 1, [Define if your assembler supports .base64.])])
3084 gcc_GAS_CHECK_FEATURE([.cv_ucomp], gcc_cv_as_cv_ucomp,,[.cv_ucomp 0],,
3085 [AC_DEFINE(HAVE_GAS_CV_UCOMP, 1, [Define if your assembler supports .cv_ucomp.])])
3087 # gnu_indirect_function type is an extension proposed at
3088 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
3089 # selection of function implementation
3090 AC_ARG_ENABLE(gnu-indirect-function,
3091 [AS_HELP_STRING([--enable-gnu-indirect-function],
3092 [enable the use of the @gnu_indirect_function to glibc systems])],
3093 [case $enable_gnu_indirect_function in
3095 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
3096 Valid choices are 'yes' and 'no'.]) ;;
3098 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
3102 AC_MSG_CHECKING(linker ifunc IRELATIVE support)
3103 cat > conftest.s <<EOF
3105 .type foo_resolver, @function
3108 .size foo_resolver, .-foo_resolver
3111 .type foo, %gnu_indirect_function
3112 .set foo, foo_resolver
3115 .type bar, @function
3121 if test x$gcc_cv_as != x \
3122 && test x$gcc_cv_ld != x \
3123 && test x$gcc_cv_readelf != x \
3124 && $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
3125 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1 \
3126 && $gcc_cv_readelf --relocs --wide conftest \
3127 | grep R_RISCV_IRELATIVE > /dev/null 2>&1; then
3128 enable_gnu_indirect_function=yes
3130 rm -f conftest conftest.o conftest.s
3131 AC_MSG_RESULT($enable_gnu_indirect_function)
3135 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
3136 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
3137 [Define if your system supports gnu indirect functions.])
3141 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
3142 if test $in_tree_ld != yes ; then
3143 if echo "$ld_ver" | grep GNU > /dev/null; then
3144 if test x"$ld_is_gold" = xyes; then
3145 # GNU gold --version looks like this:
3147 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
3149 # We extract the binutils version which is more familiar and specific
3150 # than the gold version.
3151 ld_vers=`echo $ld_ver | sed -n \
3152 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3154 # GNU ld --version looks like this:
3156 # GNU ld (GNU Binutils) 2.21.51.20110225
3157 ld_vers=`echo $ld_ver | sed -n \
3158 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3160 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)\(-*\)\([01][0-9]\)\2\([0-3][0-9]\).*$,\1\3\4,p'`
3161 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3162 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3163 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
3167 # Solaris 2 ld -V output looks like this for a regular version:
3169 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
3171 # but test versions add stuff at the end:
3173 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
3175 # ld and ld.so.1 are guaranteed to be updated in lockstep, so ld version
3176 # numbers can be used in ld.so.1 feature checks even if a different
3177 # linker is configured.
3178 ld_ver=`$gcc_cv_ld -V 2>&1`
3179 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
3180 ld_vers=`echo $ld_ver | sed -n \
3181 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
3182 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3183 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3191 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
3192 [[if test $in_tree_ld = yes ; then
3194 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
3195 && test $in_tree_ld_is_elf = yes; then
3196 gcc_cv_ld_hidden=yes
3199 gcc_cv_ld_hidden=yes
3200 if test x"$ld_is_gold" = xyes; then
3202 elif test x"$ld_is_mold" = xyes; then
3204 elif echo "$ld_ver" | grep GNU > /dev/null; then
3205 if test 0"$ld_date" -lt 20020404; then
3206 if test -n "$ld_date"; then
3207 # If there was date string, but was earlier than 2002-04-04, fail
3209 elif test -z "$ld_vers"; then
3210 # If there was no date string nor ld version number, something is wrong
3213 test -z "$ld_vers_patch" && ld_vers_patch=0
3214 if test "$ld_vers_major" -lt 2; then
3216 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
3217 gcc_cv_ld_hidden="no"
3218 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
3226 gcc_cv_ld_hidden=yes
3229 # Darwin ld has some visibility support.
3230 gcc_cv_ld_hidden=yes
3232 hppa64*-*-hpux* | ia64*-*-hpux*)
3233 gcc_cv_ld_hidden=yes
3236 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
3237 # .symbolic was only added in Solaris 9 12/02.
3238 gcc_cv_ld_hidden=yes
3246 libgcc_visibility=no
3247 AC_SUBST(libgcc_visibility)
3248 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
3249 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
3250 libgcc_visibility=yes
3251 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
3252 [Define if your assembler and linker support .hidden.])
3255 AC_MSG_CHECKING(linker read-only and read-write section mixing)
3256 gcc_cv_ld_ro_rw_mix=unknown
3257 if test $in_tree_ld = yes ; then
3258 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
3259 && test $in_tree_ld_is_elf = yes; then
3260 gcc_cv_ld_ro_rw_mix=read-write
3262 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3263 echo '.section myfoosect, "a"' > conftest1.s
3264 echo '.section myfoosect, "aw"' > conftest2.s
3265 echo '.byte 1' >> conftest2.s
3266 echo '.section myfoosect, "a"' > conftest3.s
3267 echo '.byte 0' >> conftest3.s
3268 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
3269 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
3270 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1; then
3271 if $gcc_cv_ld -shared -o conftest1.so conftest1.o \
3272 conftest2.o conftest3.o > /dev/null 2>&1 \
3273 || $gcc_cv_ld -r -o conftest1.so conftest1.o \
3274 conftest2.o conftest3.o > /dev/null 2>&1; then
3275 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
3276 | sed -e '/myfoosect/!d' -e N`
3277 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
3278 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
3279 gcc_cv_ld_ro_rw_mix=read-only
3281 gcc_cv_ld_ro_rw_mix=read-write
3287 rm -f conftest.* conftest[123].*
3290 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
3291 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
3292 [Define if your linker links a mix of read-only
3293 and read-write sections into a read-write section.])
3295 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
3297 gcc_AC_INITFINI_ARRAY
3299 # Some assemblers (GNU as for LoongArch) generates relocations for
3300 # leb128 symbol arithmetic for relaxation, we need to disable relaxation
3301 # probing leb128 support then.
3304 gcc_GAS_CHECK_FEATURE([-mno-relax support],
3305 gcc_cv_as_mno_relax,[-mno-relax],[.text],,
3306 [check_leb128_asflags=-mno-relax])
3309 check_leb128_asflags=
3313 # Check if we have .[us]leb128, and support symbol arithmetic with it.
3314 # Older versions of GAS and some non-GNU assemblers, have a bugs handling
3315 # these directives, even when they appear to accept them.
3316 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
3317 [$check_leb128_asflags],
3324 .uleb128 0x8000000000000000
3327 if test "x$gcc_cv_objdump" != x; then
3328 if $gcc_cv_objdump -s conftest.o 2>/dev/null \
3329 | grep '04800a8e 78808080 80808080 808001' >/dev/null; then
3330 gcc_cv_as_leb128=yes
3332 elif test "x$gcc_cv_otool" != x; then
3333 if $gcc_cv_otool -d conftest.o 2>/dev/null \
3334 | grep '04 80 0a 8e 78 80 80 80 80 80 80 80 80 80 01' >/dev/null; then
3335 gcc_cv_as_leb128=yes
3338 # play safe, assume the assembler is broken.
3342 [AC_DEFINE(HAVE_AS_LEB128, 1,
3343 [Define if your assembler supports .sleb128 and .uleb128.])],
3344 [AC_DEFINE(HAVE_AS_LEB128, 0,
3345 [Define if your assembler supports .sleb128 and .uleb128.])])
3347 # Determine if an .eh_frame section is read-only.
3348 gcc_fn_eh_frame_ro () {
3349 $gcc_cv_as $1 -o conftest.o conftest.s > /dev/null 2>&1 && \
3350 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
3351 sed -e '/.eh_frame/!d' -e N | grep READONLY > /dev/null
3354 # Check if we have assembler support for unwind directives.
3355 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,,
3361 .cfi_escape 1, 2, 3, 4, 5
3365 # If the linker used on Solaris (like Sun ld) isn't capable of merging
3366 # read-only and read-write sections, we need to make sure that the
3367 # assembler used emits read-write .eh_frame sections.
3368 if test "x$gcc_cv_ld_ro_rw_mix" = xread-write; then
3369 gcc_cv_as_cfi_directive=yes
3370 elif test "x$gcc_cv_objdump" = x; then
3371 # No objdump, err on the side of caution.
3372 gcc_cv_as_cfi_directive=no
3374 if test x$gas = xyes; then
3382 sparc*-*-solaris2.*)
3383 # On Solaris/SPARC, .eh_frame sections should always be read-write.
3384 if gcc_fn_eh_frame_ro $as_32_opt \
3385 || gcc_fn_eh_frame_ro $as_64_opt; then
3386 gcc_cv_as_cfi_directive=no
3388 gcc_cv_as_cfi_directive=yes
3391 i?86-*-solaris2.* | x86_64-*-solaris2.*)
3392 # On Solaris/x86, make sure that GCC and assembler agree on using
3393 # read-only .eh_frame sections for 64-bit.
3394 if gcc_fn_eh_frame_ro $as_32_opt; then
3395 gcc_cv_as_cfi_directive=no
3396 elif gcc_fn_eh_frame_ro $as_64_opt; then
3397 gcc_cv_as_cfi_directive=yes
3399 gcc_cv_as_cfi_directive=no
3406 gcc_cv_as_cfi_directive=yes
3409 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
3410 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,,
3413 .cfi_adjust_cfa_offset 64
3415 .cfi_adjust_cfa_offset 128
3418 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
3419 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
3420 gcc_cv_as_cfi_advance_working=yes
3424 # no objdump, err on the side of caution
3425 gcc_cv_as_cfi_advance_working=no
3427 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
3428 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
3429 [`if test $gcc_cv_as_cfi_directive = yes \
3430 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
3431 [Define 0/1 if your assembler supports CFI directives.])
3433 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
3434 gcc_GAS_CHECK_FEATURE([cfi personality directive],
3435 gcc_cv_as_cfi_personality_directive,,
3438 .cfi_personality 0, symbol
3440 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
3441 [`if test $gcc_cv_as_cfi_personality_directive = yes; then echo 1; else echo 0; fi`],
3442 [Define 0/1 if your assembler supports .cfi_personality.])
3444 gcc_GAS_CHECK_FEATURE([cfi sections directive],
3445 gcc_cv_as_cfi_sections_directive,,
3447 .cfi_sections .debug_frame, .eh_frame
3451 win32 | pe | cygwin* | mingw32*)
3452 # Need to check that we generated the correct relocation for the
3453 # .debug_frame section. This was fixed for binutils 2.21.
3454 gcc_cv_as_cfi_sections_directive=no
3455 if test "x$gcc_cv_objdump" != x; then
3456 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
3457 grep -i secrel > /dev/null; then
3458 gcc_cv_as_cfi_sections_directive=yes
3463 gcc_cv_as_cfi_sections_directive=yes
3466 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
3467 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
3468 [`if test $gcc_cv_as_cfi_sections_directive = yes; then echo 1; else echo 0; fi`],
3469 [Define 0/1 if your assembler supports .cfi_sections.])
3471 # GAS versions up to and including 2.11.0 may mis-optimize
3473 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,,
3480 .section .eh_frame,"aw",@progbits
3482 .4byte .LECIE1-.LSCIE1
3496 .4byte .LEFDE1-.LASFDE1
3498 .4byte .LASFDE1-__FRAME_BEGIN__
3506 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
3507 cat > conftest.lit <<EOF
3508 0000 10000000 00000000 017a0001 781a0004 .........z..x...
3509 0010 01000000 12000000 18000000 00000000 ................
3510 0020 08000000 04080000 0044 .........D @&t@
3512 cat > conftest.big <<EOF
3513 0000 00000010 00000000 017a0001 781a0004 .........z..x...
3514 0010 00000001 00000012 00000018 00000000 ................
3515 0020 00000008 04000000 0844 .........D @&t@
3517 # If the assembler didn't choke, and we can objdump,
3518 # and we got the correct data, then succeed.
3519 # The text in the here-document typically retains its unix-style line
3520 # endings, while the output of objdump will use host line endings.
3521 # Therefore, use diff -b for the comparisons.
3522 if test x$gcc_cv_objdump != x \
3523 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
3524 | tail -3 > conftest.got \
3525 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
3526 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
3528 gcc_cv_as_eh_frame=yes
3529 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
3530 gcc_cv_as_eh_frame=buggy
3532 # Uh oh, what do we do now?
3533 gcc_cv_as_eh_frame=no
3536 if test $gcc_cv_as_eh_frame = buggy; then
3537 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
3538 [Define if your assembler mis-optimizes .eh_frame data.])
3541 # Test if the assembler supports the section flag 'e' or #exclude for
3542 # specifying an excluded section.
3543 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_e,
3547 if test $gcc_cv_as_section_exclude_e = no; then
3549 # Solaris as uses #exclude instead.
3553 conftest_s='.section "foo1", #exclude'
3555 i?86-*-solaris2* | x86_64-*-solaris2*)
3556 conftest_s='.section foo1, #exclude'
3561 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_hash,,
3565 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3566 [`if test $gcc_cv_as_section_exclude_e = yes || test $gcc_cv_as_section_exclude_hash = yes; then echo 1; else echo 0; fi`],
3567 [Define if your assembler supports specifying the exclude section flag.])
3569 # Test if the assembler supports the section flag 'R' for specifying
3570 # section with SHF_GNU_RETAIN.
3572 # Solaris may use GNU assembler with Solairs ld. Even if GNU
3573 # assembler supports the section flag 'R', it doesn't mean that
3574 # Solairs ld supports it.
3576 gcc_cv_as_shf_gnu_retain=no
3579 gcc_GAS_CHECK_FEATURE([section 'R' flag], gcc_cv_as_shf_gnu_retain,
3581 [.section .foo,"awR",%progbits
3585 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_GNU_RETAIN,
3586 [`if test $gcc_cv_as_shf_gnu_retain = yes; then echo 1; else echo 0; fi`],
3587 [Define 0/1 if your assembler supports marking sections with SHF_GNU_RETAIN flag.])
3589 # Test if the assembler supports the section flag 'o' for specifying
3590 # section with link-order.
3592 # Solaris may use GNU assembler with Solairs ld. Even if GNU
3593 # assembler supports the section flag 'o', it doesn't mean that
3594 # Solairs ld supports it.
3596 gcc_cv_as_section_link_order=no
3599 gcc_GAS_CHECK_FEATURE([section 'o' flag], gcc_cv_as_section_link_order,
3603 .section __patchable_function_entries,"awo",%progbits,.foo
3607 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_LINK_ORDER,
3608 [`if test $gcc_cv_as_section_link_order = yes; then echo 1; else echo 0; fi`],
3609 [Define 0/1 if your assembler supports 'o' flag in .section directive.])
3611 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
3613 [.section .rodata.str, "aMS", @progbits, 1])
3614 if test $gcc_cv_as_shf_merge = no; then
3615 gcc_GAS_CHECK_FEATURE(section merging support (%progbits),
3616 gcc_cv_as_shf_merge_percent,
3618 [.section .rodata.str, "aMS", %progbits, 1])
3620 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
3621 [`if test $gcc_cv_as_shf_merge = yes \
3622 || test $gcc_cv_as_shf_merge_percent = yes; then echo 1; else echo 0; fi`],
3623 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
3625 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
3626 gcc_cv_as_comdat_group,
3628 [.section .text,"axG",@progbits,.foo,comdat])
3629 if test $gcc_cv_as_comdat_group = yes; then
3630 gcc_cv_as_comdat_group_percent=no
3631 gcc_cv_as_comdat_group_group=no
3633 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
3634 gcc_cv_as_comdat_group_percent,
3636 [.section .text,"axG",%progbits,.foo,comdat])
3637 if test $gcc_cv_as_comdat_group_percent = yes; then
3638 gcc_cv_as_comdat_group_group=no
3641 # Sun as uses a completely different syntax.
3646 .group foo,".text%foo",#comdat
3647 .section ".text%foo", #alloc,#execinstr,#progbits
3652 i?86-*-solaris2* | x86_64-*-solaris2*)
3654 .group foo,.text%foo,#comdat
3655 .section .text%foo, "ax", @progbits
3661 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
3662 gcc_cv_as_comdat_group_group,
3666 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
3667 gcc_cv_as_comdat_group_group=no
3671 if test x"$ld_is_gold" = xyes; then
3673 elif test x"$ld_is_mold" = xyes; then
3675 elif test $in_tree_ld = yes ; then
3677 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3678 && test $in_tree_ld_is_elf = yes; then
3681 elif echo "$ld_ver" | grep GNU > /dev/null; then
3683 if test 0"$ld_date" -lt 20050308; then
3684 if test -n "$ld_date"; then
3685 # If there was date string, but was earlier than 2005-03-08, fail
3687 elif test "$ld_vers_major" -lt 2; then
3689 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
3696 *-*-solaris2.1[1-9]*)
3698 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
3699 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
3702 # If using Sun as for COMDAT group as emitted by GCC, one needs at
3703 # least ld version 1.2267.
3704 if test "$ld_vers_major" -gt 1; then
3706 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
3708 elif test "$ld_vers_minor" -ge 2267; then
3713 # Assume linkers other than GNU ld don't support COMDAT group.
3719 # Allow overriding the automatic COMDAT group tests above.
3720 AC_ARG_ENABLE(comdat,
3721 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
3722 [comdat_group="$enable_comdat"])
3723 if test $comdat_group = no; then
3724 gcc_cv_as_comdat_group=no
3725 gcc_cv_as_comdat_group_percent=no
3726 gcc_cv_as_comdat_group_group=no
3728 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
3729 [`if test $gcc_cv_as_comdat_group = yes \
3730 || test $gcc_cv_as_comdat_group_percent = yes \
3731 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
3732 [Define 0/1 if your assembler and linker support COMDAT groups.])
3734 gcc_GAS_CHECK_FEATURE([line table is_stmt support],
3738 .loc 1 1 0 is_stmt 1],,
3739 [AC_DEFINE(HAVE_GAS_LOC_STMT, 1,
3740 [Define if your assembler supports the .loc is_stmt sub-directive.])])
3742 gcc_GAS_CHECK_FEATURE([line table discriminator support],
3743 gcc_cv_as_discriminator,,
3746 .loc 1 1 0 discriminator 1],,
3747 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
3748 [Define if your assembler supports the .loc discriminator sub-directive.])])
3750 # Catch the newlib flag of the same name so we can gate GCC features on it.
3751 AC_ARG_ENABLE(newlib-nano-formatted-io,
3752 [AS_HELP_STRING([--enable-newlib-nano-formatted-io], [Use nano version
3754 [case "${enableval}" in
3758 AC_MSG_ERROR([unknown newlib-nano-formatted-io setting $enableval])
3762 # Thread-local storage - the check is heavily parameterized.
3769 .section ".tdata","awT",@progbits
3772 ldq $27,__tls_get_addr($29) !literal!1
3773 lda $16,foo($29) !tlsgd!1
3774 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
3775 ldq $27,__tls_get_addr($29) !literal!2
3776 lda $16,foo($29) !tlsldm!2
3777 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
3778 ldq $1,foo($29) !gotdtprel
3779 ldah $2,foo($29) !dtprelhi
3780 lda $3,foo($2) !dtprello
3781 lda $4,foo($29) !dtprel
3782 ldq $1,foo($29) !gottprel
3783 ldah $2,foo($29) !tprelhi
3784 lda $3,foo($2) !tprello
3785 lda $4,foo($29) !tprel'
3786 tls_as_opt=--fatal-warnings
3790 add_s r0,r0, @foo@tpoff'
3792 cris-*-*|crisv32-*-*)
3794 .section ".tdata","awT",@progbits
3799 tls_as_opt=--fatal-warnings
3803 .section ".tdata","awT",@progbits
3813 .section ".tdata","awT",@progbits
3817 addil LT%foo-$tls_gdidx$,gp
3818 ldo RT%foo-$tls_gdidx$(%r1),%arg0
3821 addil LT%foo-$tls_ldidx$,gp
3823 ldo RT%foo-$tls_ldidx$(%r1),%arg0
3824 addil LR%foo-$tls_dtpoff$,%ret0
3825 ldo RR%foo-$tls_dtpoff$(%r1),%t1
3827 addil LT%foo-$tls_ieoff$,gp
3828 ldw RT%foo-$tls_ieoff$(%r1),%t2
3831 addil LR%foo-$tls_leoff$,%t1
3832 ldo RR%foo-$tls_leoff$(%r1),%t2'
3833 tls_as_opt=--fatal-warnings
3837 .section ".tdata","awT",%progbits
3846 i[34567]86-*-* | x86_64-*-*)
3848 i[34567]86-*-solaris2.* | x86_64-*-solaris2.*)
3855 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3857 .section .tdata,"awt",@progbits'
3860 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
3861 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
3865 .section ".tdata","awT",@progbits'
3867 tls_as_opt="--fatal-warnings"
3871 if test x$on_solaris = xyes; then
3873 yes) tls_as_opt="$tls_as_opt --32" ;;
3876 conftest_s="$conftest_s
3880 leal foo@tlsgd(,%ebx,1), %eax
3881 leal foo@tlsldm(%ebx), %eax
3882 leal foo@dtpoff(%eax), %edx
3883 movl foo@gottpoff(%ebx), %eax
3884 subl foo@gottpoff(%ebx), %eax
3885 addl foo@gotntpoff(%ebx), %eax
3886 movl foo@indntpoff, %eax
3887 movl \$foo@tpoff, %eax
3888 subl \$foo@tpoff, %eax
3889 leal foo@ntpoff(%ecx), %eax"
3892 if test x$on_solaris = xyes; then
3894 yes) tls_as_opt="$tls_as_opt --64" ;;
3895 no) tls_as_opt="$tls_as_opt -xarch=amd64" ;;
3898 conftest_s="$conftest_s
3902 leaq foo@tlsgd(%rip), %rdi
3903 leaq foo@tlsld(%rip), %rdi
3904 leaq foo@dtpoff(%rax), %rdx
3905 movq foo@gottpoff(%rip), %rax
3906 movq \$foo@tpoff, %rax"
3912 .section ".tdata","awT",@progbits
3915 addl r16 = @ltoff(@dtpmod(foo#)), gp
3916 addl r17 = @ltoff(@dtprel(foo#)), gp
3917 addl r18 = @ltoff(@tprel(foo#)), gp
3918 addl r19 = @dtprel(foo#), gp
3919 adds r21 = @dtprel(foo#), r13
3920 movl r23 = @dtprel(foo#)
3921 addl r20 = @tprel(foo#), gp
3922 adds r22 = @tprel(foo#), r13
3923 movl r24 = @tprel(foo#)'
3924 tls_as_opt=--fatal-warnings
3928 .section .tdata,"awT",@progbits
3935 tls_as_opt='--fatal-warnings'
3939 .section .tdata,"awT",@progbits
3943 addik r5,r20,x@TLSGD
3944 addik r5,r20,x@TLSLDM'
3945 tls_as_opt='--fatal-warnings'
3949 .section .tdata,"awT",@progbits
3953 addiu $4, $28, %tlsgd(x)
3954 addiu $4, $28, %tlsldm(x)
3955 lui $4, %dtprel_hi(x)
3956 addiu $4, $4, %dtprel_lo(x)
3957 lw $4, %gottprel(x)($28)
3958 lui $4, %tprel_hi(x)
3959 addiu $4, $4, %tprel_lo(x)'
3960 tls_as_opt='-32 --fatal-warnings'
3964 .section .tdata,"awT",@progbits
3969 move.l x@TLSGD(%a5),%a0
3970 move.l x@TLSLDM(%a5),%a0
3971 move.l x@TLSLDO(%a5),%a0
3972 move.l x@TLSIE(%a5),%a0
3973 move.l x@TLSLE(%a5),%a0'
3974 tls_as_opt='--fatal-warnings'
3978 .section ".tdata","awT",%progbits
3982 add x0, x0, #:tlsgd_lo12:x
3985 tls_as_opt='--fatal-warnings'
3989 .section ".tdata","awT",@progbits
3992 l.movhi r3, tpoffha(foo)
3994 l.lwz r4, tpofflo(foo)(r3)'
3995 tls_as_opt=--fatal-warnings
3999 .extern __get_tpointer
4015 .section ".tdata","awT",@progbits
4023 addi 3,2,ld0@got@tlsgd
4029 addi 3,2,x1@got@tlsld
4035 addis 9,3,x2@dtprel@ha
4036 addi 9,9,x2@dtprel@l
4039 ld 9,x3@got@dtprel(2)
4043 tls_as_opt="-a64 --fatal-warnings"
4047 .section ".tdata","awT",@progbits
4055 addi 3,31,ld0@got@tlsgd
4057 addi 3,31,x1@got@tlsld
4060 addis 9,3,x2@dtprel@ha
4061 addi 9,9,x2@dtprel@l
4062 lwz 9,x3@got@tprel(31)
4065 addis 9,2,x2@tprel@ha
4066 addi 9,9,x2@tprel@l'
4067 tls_as_opt="-a32 --fatal-warnings"
4071 .section .tdata,"awT",@progbits
4075 call __tls_get_addr'
4076 tls_as_opt='--fatal-warnings'
4080 .section ".tdata","awT",@progbits
4089 l %r1,foo@GOTNTPOFF(%r12)
4090 l %r1,0(%r1):tls_load:foo
4091 bas %r14,0(%r1,%r13):tls_gdcall:foo
4092 bas %r14,0(%r1,%r13):tls_ldcall:foo'
4093 tls_as_opt="-m31 --fatal-warnings"
4097 .section ".tdata","awT",@progbits
4105 lg %r1,foo@GOTNTPOFF(%r12)
4106 larl %r1,foo@INDNTPOFF
4107 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
4108 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
4109 tls_as_opt="-m64 -Aesame --fatal-warnings"
4111 sh-*-* | sh[123456789lbe]*-*-*)
4113 .section ".tdata","awT",@progbits
4121 tls_as_opt=--fatal-warnings
4125 sparc*-sun-solaris2.*)
4132 if test x$on_solaris = xyes && test x$gas_flag = xno; then
4134 .section ".tdata",#alloc,#write,#tls'
4137 .section ".tdata","awT",@progbits'
4138 tls_as_opt="-32 --fatal-warnings"
4140 conftest_s="$conftest_s
4143 sethi %tgd_hi22(foo), %o0
4144 add %o0, %tgd_lo10(foo), %o1
4145 add %l7, %o1, %o0, %tgd_add(foo)
4146 call __tls_get_addr, %tgd_call(foo)
4147 sethi %tldm_hi22(foo), %l1
4148 add %l1, %tldm_lo10(foo), %l2
4149 add %l7, %l2, %o0, %tldm_add(foo)
4150 call __tls_get_addr, %tldm_call(foo)
4151 sethi %tldo_hix22(foo), %l3
4152 xor %l3, %tldo_lox10(foo), %l4
4153 add %o0, %l4, %l5, %tldo_add(foo)
4154 sethi %tie_hi22(foo), %o3
4155 add %o3, %tie_lo10(foo), %o3
4156 ld [%l7 + %o3], %o2, %tie_ld(foo)
4157 add %g7, %o2, %o4, %tie_add(foo)
4158 sethi %tle_hix22(foo), %l1
4159 xor %l1, %tle_lox10(foo), %o5
4160 ld [%g7 + %o5], %o1"
4164 .section ".tdata","awT",@progbits
4167 movi a8, foo@TLSFUNC
4168 movi a10, foo@TLSARG
4169 callx8.tls a8, foo@TLSCALL'
4174 if test "x$enable_tls" = xno ; then
4175 : # TLS explicitly disabled.
4176 elif test "x$enable_tls" = xyes ; then
4177 set_have_as_tls=yes # TLS explicitly enabled.
4178 elif test -z "$conftest_s"; then
4179 : # If we don't have a check, assume no support.
4181 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
4182 [$tls_as_opt], [$conftest_s],,
4183 [set_have_as_tls=yes])
4185 if test $set_have_as_tls = yes ; then
4186 AC_DEFINE(HAVE_AS_TLS, 1,
4187 [Define if your assembler and linker support thread-local storage.])
4190 # Target-specific assembler checks.
4192 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
4193 gcc_cv_ld_static_dynamic=no
4194 gcc_cv_ld_static_option='-Bstatic'
4195 gcc_cv_ld_dynamic_option='-Bdynamic'
4196 if test $in_tree_ld = yes ; then
4197 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
4198 gcc_cv_ld_static_dynamic=yes
4200 elif test x$gcc_cv_ld != x; then
4201 # Check if linker supports -Bstatic/-Bdynamic option
4202 if $gcc_cv_ld --help 2>&1 | grep -- -Bstatic > /dev/null \
4203 && $gcc_cv_ld --help 2>&1 | grep -- -Bdynamic > /dev/null; then
4204 gcc_cv_ld_static_dynamic=yes
4207 # AIX ld uses -b flags
4208 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
4209 gcc_cv_ld_static_dynamic=yes
4210 gcc_cv_ld_static_option="-bstatic"
4211 gcc_cv_ld_dynamic_option="-bdynamic"
4213 # HP-UX ld uses -a flags to select between shared and archive.
4215 if test x"$gnu_ld" = xno; then
4216 gcc_cv_ld_static_dynamic=yes
4217 gcc_cv_ld_static_option="-aarchive_shared"
4218 gcc_cv_ld_dynamic_option="-adefault"
4221 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
4223 gcc_cv_ld_static_dynamic=yes
4228 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
4229 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
4230 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
4231 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
4232 [Define to the linker option to disable use of shared objects.])
4233 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
4234 [Define to the linker option to enable use of shared objects.])
4236 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
4238 AC_MSG_CHECKING(linker --version-script option)
4239 gcc_cv_ld_version_script=no
4240 ld_version_script_option=''
4241 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
4242 gcc_cv_ld_version_script=yes
4243 ld_version_script_option='--version-script'
4244 elif test x$gcc_cv_ld != x; then
4246 # Solaris 2 ld always supports -M. It also supports a subset of
4247 # --version-script since Solaris 11.4, but requires
4248 # -z gnu-version-script-compat to activate.
4250 gcc_cv_ld_version_script=yes
4251 ld_version_script_option='-M'
4255 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
4256 AC_MSG_RESULT($gcc_cv_ld_version_script)
4257 AC_SUBST(ld_version_script_option)
4259 AC_MSG_CHECKING(linker soname option)
4261 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
4262 gcc_cv_ld_soname=yes
4263 ld_soname_option='-soname'
4264 elif test x$gcc_cv_ld != x; then
4267 gcc_cv_ld_soname=yes
4268 ld_soname_option='-install_name'
4270 # Solaris 2 ld always supports -h. It also supports --soname for GNU
4271 # ld compatiblity since some Solaris 10 update.
4273 gcc_cv_ld_soname=yes
4274 ld_soname_option='-h'
4278 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
4279 AC_MSG_RESULT($gcc_cv_ld_soname)
4280 AC_SUBST(ld_soname_option)
4282 if test x"$demangler_in_ld" = xyes; then
4283 AC_MSG_CHECKING(linker --demangle support)
4284 gcc_cv_ld_demangle=no
4285 if test $in_tree_ld = yes; then
4286 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
4287 gcc_cv_ld_demangle=yes
4289 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
4290 # Check if the GNU linker supports --demangle option
4291 if $gcc_cv_ld --help 2>&1 | grep no-demangle > /dev/null; then
4292 gcc_cv_ld_demangle=yes
4295 if test x"$gcc_cv_ld_demangle" = xyes; then
4296 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
4297 [Define if your linker supports --demangle option.])
4299 AC_MSG_RESULT($gcc_cv_ld_demangle)
4302 AC_MSG_CHECKING(linker plugin support)
4304 if test -f liblto_plugin.la; then
4305 save_ld_ver="$ld_ver"
4306 save_ld_vers_major="$ld_vers_major"
4307 save_ld_vers_minor="$ld_vers_minor"
4308 save_ld_is_gold="$ld_is_gold"
4312 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
4314 # FIXME: ld_is_gold?
4315 ld_vers_major="$gcc_cv_gld_major_version"
4316 ld_vers_minor="$gcc_cv_gld_minor_version"
4318 # Determine plugin linker version.
4319 # FIXME: Partial duplicate from above, generalize.
4321 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
4322 if echo "$ld_ver" | grep GNU > /dev/null; then
4323 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
4325 ld_vers=`echo $ld_ver | sed -n \
4326 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
4328 ld_vers=`echo $ld_ver | sed -n \
4329 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
4331 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
4332 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
4337 # Determine plugin support.
4338 if echo "$ld_ver" | grep GNU > /dev/null; then
4339 # Require GNU ld or gold 2.21+ for plugin support by default.
4340 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
4342 elif test "$ld_is_mold" = yes; then
4344 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
4345 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
4350 ld_ver="$save_ld_ver"
4351 ld_vers_major="$save_ld_vers_major"
4352 ld_vers_minor="$save_ld_vers_minor"
4353 ld_is_gold="$save_ld_is_gold"
4355 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
4356 [Define to the level of your linker's plugin support.])
4357 AC_MSG_RESULT($gcc_cv_lto_plugin)
4359 # Target OS-specific assembler checks.
4361 case "$target_os" in
4363 gcc_GAS_CHECK_FEATURE([-mmacosx-version-min option],
4364 gcc_cv_as_mmacosx_version_min,
4365 [-mmacosx-version-min=10.1], [.text],,
4366 [AC_DEFINE(HAVE_AS_MMACOSX_VERSION_MIN_OPTION, 1,
4367 [Define if your macOS assembler supports the -mmacos-version-min option.])])
4368 if test x$gcc_cv_as_mmacosx_version_min = "xyes"; then
4369 gcc_GAS_CHECK_FEATURE([.build_version],
4370 gcc_cv_as_darwin_build_version,
4371 [-mmacosx-version-min=10.14],
4372 [ .build_version macos, 10, 14 sdk_version 10, 14],,
4373 [AC_DEFINE(HAVE_AS_MACOS_BUILD_VERSION, 1,
4374 [Define if your macOS assembler supports .build_version directives])])
4379 # Target CPU-specific assembler checks.
4383 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,
4384 [-mabi=lp64], [.text],,,)
4385 if test x$gcc_cv_as_aarch64_mabi = xyes; then
4386 AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
4387 [Define if your assembler supports the -mabi option.])
4389 if test x$with_abi = xilp32; then
4390 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
4391 Upgrade the Assembler.])
4393 if test x"$with_multilib_list" = xdefault; then
4394 TM_MULTILIB_CONFIG=lp64
4396 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
4397 for aarch64_multilib in ${aarch64_multilibs}; do
4398 case ${aarch64_multilib} in
4400 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
4401 Upgrade the Assembler.])
4409 # Check if we have binutils support for relocations types needed by -fpic
4410 gcc_GAS_CHECK_FEATURE([-fpic relocs], gcc_cv_as_aarch64_picreloc,,
4413 ldr x0, [[x2, #:gotpage_lo15:globalsym]]
4414 ],,[AC_DEFINE(HAVE_AS_SMALL_PIC_RELOCS, 1,
4415 [Define if your assembler supports relocs needed by -fpic.])])
4416 # Enable Branch Target Identification Mechanism and Return Address
4417 # Signing by default.
4418 AC_ARG_ENABLE(standard-branch-protection,
4420 AS_HELP_STRING([--enable-standard-branch-protection],
4421 [enable Branch Target Identification Mechanism, Return Address Signing, and Guarded Control Stack by default for AArch64])
4422 AS_HELP_STRING([--disable-standard-branch-protection],
4423 [disable Branch Target Identification Mechanism, Return Address Signing, and Guarded Control Stack by default for AArch64])
4428 tm_defines="${tm_defines} TARGET_ENABLE_BTI=1 TARGET_ENABLE_PAC_RET=1 TARGET_ENABLE_GCS=1"
4433 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-standard-branch-protection.\
4434 Valid choices are 'yes' and 'no'.])
4439 # Enable default workaround for AArch64 Cortex-A53 erratum 835769.
4440 AC_ARG_ENABLE(fix-cortex-a53-835769,
4442 AS_HELP_STRING([--enable-fix-cortex-a53-835769],
4443 [enable workaround for AArch64 Cortex-A53 erratum 835769 by default])
4444 AS_HELP_STRING([--disable-fix-cortex-a53-835769],
4445 [disable workaround for AArch64 Cortex-A53 erratum 835769 by default])
4450 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1"
4455 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\
4456 Valid choices are 'yes' and 'no'.])
4462 # Enable default workaround for AArch64 Cortex-A53 erratum 843419.
4463 AC_ARG_ENABLE(fix-cortex-a53-843419,
4465 AS_HELP_STRING([--enable-fix-cortex-a53-843419],
4466 [enable workaround for AArch64 Cortex-A53 erratum 843419 by default])
4467 AS_HELP_STRING([--disable-fix-cortex-a53-843419],
4468 [disable workaround for AArch64 Cortex-A53 erratum 843419 by default])
4473 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1"
4478 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\
4479 Valid choices are 'yes' and 'no'.])
4487 # All TARGET_ABI_OSF targets.
4488 alpha*-*-linux* | alpha*-*-*bsd*)
4489 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4490 gcc_cv_as_alpha_explicit_relocs,,
4493 extbl $3, $2, $3 !lituse_bytoff!1
4494 ldq $2, a($29) !literal!1
4495 ldq $4, b($29) !literal!2
4496 ldq_u $3, 0($2) !lituse_base!1
4497 ldq $27, f($29) !literal!5
4498 jsr $26, ($27), f !lituse_jsr!5
4499 ldah $29, 0($26) !gpdisp!3
4500 lda $0, c($29) !gprel
4501 ldah $1, d($29) !gprelhigh
4502 lda $1, d($1) !gprellow
4503 lda $29, 0($29) !gpdisp!3],,
4504 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
4505 [Define if your assembler supports explicit relocations.])])
4506 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
4507 gcc_cv_as_alpha_jsrdirect_relocs,,
4510 ldq $27, a($29) !literal!1
4511 jsr $26, ($27), a !lituse_jsrdirect!1],,
4512 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
4513 [Define if your assembler supports the lituse_jsrdirect relocation.])])
4517 gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax,
4518 [--mlink-relax], [.text],,
4519 [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1,
4520 [Define if your avr assembler supports --mlink-relax option.])])
4522 gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,
4524 [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1,
4525 [Define if your avr assembler supports -mrmw option.])])
4527 gcc_GAS_CHECK_FEATURE([__gcc_isr pseudo instruction],
4528 gcc_cv_as_avr_mgccisr,
4534 [AC_DEFINE(HAVE_AS_AVR_MGCCISR_OPTION, 1,
4535 [Define if your avr assembler supports -mgcc-isr option.])])
4537 avr_ld_ver="`$gcc_cv_ld -v | sed -e 's:^.* ::'`"
4538 # Check how default linker description file implements .rodata for
4539 # avrxmega3 (PR21472). avr-gcc assumes .rodata is *not* loaded to
4540 # RAM so avr-gcc skips __do_copy_data for .rodata objects.
4541 AC_MSG_CHECKING(binutils for avrxmega3 .rodata support)
4542 cat > conftest.s <<EOF
4543 .section .rodata,"a",@progbits
4545 ;; avr-nm should print "... R xxvaryy", not "... D xxvaryy".
4550 AC_TRY_COMMAND([$gcc_cv_as -mmcu=avrxmega3 conftest.s -o conftest.o])
4551 AC_TRY_COMMAND([$gcc_cv_ld -mavrxmega3 conftest.o -o conftest.elf])
4552 AC_TRY_COMMAND([$gcc_cv_nm conftest.elf > conftest.nm])
4553 if test -s conftest.nm
4555 if grep ' R xxvaryy' conftest.nm > /dev/null; then
4557 AC_DEFINE(HAVE_LD_AVR_AVRXMEGA3_RODATA_IN_FLASH, 1,
4558 [Define if your default avr linker script for avrxmega3 leaves .rodata in flash.])
4560 AC_MSG_RESULT(no: avrxmega3 .rodata located in RAM)
4561 echo "$as_me: nm output was" >&AS_MESSAGE_LOG_FD
4562 cat conftest.nm >&AS_MESSAGE_LOG_FD
4563 AC_MSG_WARN([[support for avrxmega3 .rodata in flash needs Binutils 2.29 or higher (have $avr_ld_ver)]])
4566 AC_MSG_RESULT(test failed)
4567 echo "$as_me: failed program was" >&AS_MESSAGE_LOG_FD
4568 cat conftest.s >&AS_MESSAGE_LOG_FD
4569 AC_MSG_WARN([[see `config.log' for details]])
4571 rm -f conftest.s conftest.o conftest.elf conftest.nm
4573 # Check for emulation avrxmega2_flmap.
4574 AC_MSG_CHECKING(binutils for avrxmega2_flmap support (PR31124))
4575 cat > conftest.s <<EOF
4576 .section .text,"ax",@progbits
4577 ldi r16, __flmap_value_with_lock
4579 AC_TRY_COMMAND([$gcc_cv_as -mmcu=avrxmega2 conftest.s -o conftest.o])
4580 AC_TRY_COMMAND([$gcc_cv_ld -mavrxmega2_flmap conftest.o -o conftest.elf])
4581 if test -s conftest.elf
4584 AC_DEFINE(HAVE_LD_AVR_AVRXMEGA2_FLMAP, 1,
4585 [Define if your linker supports emulation avrxmega2_flmap.])
4588 AC_MSG_WARN([[support for avrxmega2_flmap requires Binutils 2.42 or higher (have $avr_ld_ver)]])
4589 AC_MSG_WARN([[see `config.log' for details]])
4591 rm -f conftest.o conftest.elf
4593 # Check for emulation avrxmega4_flmap.
4594 AC_MSG_CHECKING(binutils for avrxmega4_flmap support (PR31124))
4595 AC_TRY_COMMAND([$gcc_cv_as -mmcu=avrxmega4 conftest.s -o conftest.o])
4596 AC_TRY_COMMAND([$gcc_cv_ld -mavrxmega4_flmap conftest.o -o conftest.elf])
4597 if test -s conftest.elf
4600 AC_DEFINE(HAVE_LD_AVR_AVRXMEGA4_FLMAP, 1,
4601 [Define if your linker supports emulation avrxmega4_flmap.])
4604 AC_MSG_WARN([[support for avrxmega4_flmap requires Binutils 2.42 or higher (have $avr_ld_ver)]])
4605 AC_MSG_WARN([[see `config.log' for details]])
4607 rm -f conftest.s conftest.o conftest.elf
4611 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
4612 gcc_cv_as_cris_no_mul_bug,
4613 [-no-mul-bug-abort], [.text],,
4614 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
4615 [Define if your assembler supports the -no-mul-bug-abort option.])])
4619 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,
4621 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
4622 [Define if your assembler supports -relax option.])])
4624 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
4625 gcc_cv_as_sparc_gotdata_op,
4632 sethi %gdop_hix22(foo), %g1
4633 xor %g1, %gdop_lox10(foo), %g1
4634 ld [[%l7 + %g1]], %g2, %gdop(foo)],
4635 [if test x$gcc_cv_ld != x \
4636 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4637 if test x$gcc_cv_objdump != x; then
4638 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
4639 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
4640 gcc_cv_as_sparc_gotdata_op=no
4642 gcc_cv_as_sparc_gotdata_op=yes
4647 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
4648 [Define if your assembler and linker support GOTDATA_OP relocs.])])
4650 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
4651 gcc_cv_as_sparc_ua_pcrel,
4659 .uaword %r_disp32(foo)],
4660 [if test x$gcc_cv_ld != x \
4661 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4662 gcc_cv_as_sparc_ua_pcrel=yes
4665 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
4666 [Define if your assembler and linker support unaligned PC relative relocs.])
4668 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
4669 gcc_cv_as_sparc_ua_pcrel_hidden,
4674 .uaword %r_disp32(foo)
4675 .byte 0x32, 0x33, 0x34
4680 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4681 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
4682 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
4683 | grep ' 31000000 07323334' > /dev/null 2>&1; then
4684 if $gcc_cv_objdump -R conftest 2> /dev/null \
4685 | grep 'DISP32' > /dev/null 2>&1; then
4688 gcc_cv_as_sparc_ua_pcrel_hidden=yes
4692 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
4693 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
4694 ]) # unaligned pcrel relocs
4696 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
4697 gcc_cv_as_sparc_offsetable_lo10,
4700 or %g1, %lo(ab) + 12, %g1
4701 or %g1, %lo(ab + 12), %g1],
4702 [if test x$gcc_cv_objdump != x \
4703 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
4704 | grep ' 82106000 82106000' > /dev/null 2>&1; then
4705 gcc_cv_as_sparc_offsetable_lo10=yes
4707 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
4708 [Define if your assembler supports offsetable %lo().])])
4710 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
4711 gcc_cv_as_sparc_fmaf,
4714 .register %g2, #scratch
4715 .register %g3, #scratch
4717 fmaddd %f0, %f2, %f4, %f6
4718 addxccc %g1, %g2, %g3
4719 fsrl32 %f2, %f4, %f8
4720 fnaddd %f10, %f12, %f14],,
4721 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
4722 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
4724 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
4725 gcc_cv_as_sparc_sparc4,
4728 .register %g2, #scratch
4729 .register %g3, #scratch
4732 1: cwbneg %g2, %g3, 1f
4735 aes_kexpand0 %f4, %f6, %f8
4736 des_round %f38, %f40, %f42, %f44
4737 camellia_f %f54, %f56, %f58, %f60
4738 kasumi_fi_xor %f46, %f48, %f50, %f52],,
4739 [AC_DEFINE(HAVE_AS_SPARC4, 1,
4740 [Define if your assembler supports SPARC4 instructions.])])
4742 gcc_GAS_CHECK_FEATURE([SPARC5 and VIS 4.0 instructions],
4743 gcc_cv_as_sparc_sparc5,
4746 .register %g2, #scratch
4747 .register %g3, #scratch
4750 fpadd8 %f0, %f2, %f4],,
4751 [AC_DEFINE(HAVE_AS_SPARC5_VIS4, 1,
4752 [Define if your assembler supports SPARC5 and VIS 4.0 instructions.])])
4754 gcc_GAS_CHECK_FEATURE([SPARC6 instructions],
4755 gcc_cv_as_sparc_sparc6,
4758 .register %g2, #scratch
4759 .register %g3, #scratch
4762 fpsll64x %f0, %f2, %f4],,
4763 [AC_DEFINE(HAVE_AS_SPARC6, 1,
4764 [Define if your assembler supports SPARC6 instructions.])])
4766 gcc_GAS_CHECK_FEATURE([LEON instructions],
4767 gcc_cv_as_sparc_leon,
4770 .register %g2, #scratch
4771 .register %g3, #scratch
4775 casa [[%g2]] 0xb, %g3, %g1],,
4776 [AC_DEFINE(HAVE_AS_LEON, 1,
4777 [Define if your assembler supports LEON instructions.])])
4781 i[34567]86-*-* | x86_64-*-*)
4785 # Full C++ conformance when using a shared libstdc++-v3 requires some
4786 # support from the Cygwin DLL, which in more recent versions exports
4787 # wrappers to aid in interposing and redirecting operators new, delete,
4788 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
4789 # are configuring for a version of Cygwin that exports the wrappers.
4790 if test x$host = x$target && test x$host_cpu = xi686; then
4791 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
4793 # Can't check presence of libc functions during cross-compile, so
4794 # we just have to assume we're building for an up-to-date target.
4795 gcc_ac_cygwin_dll_wrappers=yes
4797 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
4798 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
4799 [Define if you want to generate code by default that assumes that the
4800 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
4803 cygwin* | pe | mingw32*)
4804 # Recent binutils allows the three-operand form of ".comm" on PE. This
4805 # definition is used unconditionally to initialise the default state of
4806 # the target option variable that governs usage of the feature.
4807 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,,
4809 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
4810 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
4811 [Define if your assembler supports specifying the alignment
4812 of objects allocated using the GAS .comm command.])
4813 # Used for DWARF 2 in PE
4814 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
4815 gcc_cv_as_ix86_pe_secrel32,,
4820 [if test x$gcc_cv_ld != x \
4821 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
4822 gcc_cv_as_ix86_pe_secrel32=yes
4825 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
4826 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
4827 # Test if the assembler supports the extended form of the .section
4828 # directive that specifies section alignment. LTO support uses this,
4829 # but normally only after installation, so we warn but don't fail the
4830 # configure if LTO is enabled but the assembler does not support it.
4831 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
4832 -fatal-warnings,[.section lto_test,"dr0"])
4833 if test x$gcc_cv_as_section_has_align != xyes; then
4834 case ",$enable_languages," in
4836 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
4843 darwin2* | darwin19*)
4844 gcc_GAS_CHECK_FEATURE([llvm assembler x86-pad-for-align option],
4845 gcc_cv_as_mllvm_x86_pad_for_align,
4846 [-mllvm -x86-pad-for-align=false], [.text],,
4847 [AC_DEFINE(HAVE_AS_MLLVM_X86_PAD_FOR_ALIGN, 1,
4848 [Define if your macOS assembler supports -mllvm -x86-pad-for-align=false.])])
4852 gcc_GAS_CHECK_FEATURE([-xbrace_comment], gcc_cv_as_ix86_xbrace_comment,
4853 [-xbrace_comment=no], [.text],,
4854 [AC_DEFINE(HAVE_AS_XBRACE_COMMENT_OPTION, 1,
4855 [Define if your assembler supports -xbrace_comment option.])])
4857 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
4858 gcc_cv_as_ix86_filds,,
4859 [filds (%ebp); fists (%ebp)],,
4860 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
4861 [Define if your assembler uses filds and fists mnemonics.])])
4863 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
4864 gcc_cv_as_ix86_fildq,,
4865 [fildq (%ebp); fistpq (%ebp)],,
4866 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
4867 [Define if your assembler uses fildq and fistq mnemonics.])])
4869 gcc_GAS_CHECK_FEATURE([cmov syntax],
4870 gcc_cv_as_ix86_cmov_sun_syntax,,
4871 [cmovl.l %edx, %eax],,
4872 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
4873 [Define if your assembler supports the Sun syntax for cmov.])])
4875 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
4876 gcc_cv_as_ix86_ffreep,,
4878 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
4879 [Define if your assembler supports the ffreep mnemonic.])])
4881 gcc_GAS_CHECK_FEATURE([.quad directive],
4882 gcc_cv_as_ix86_quad,,
4884 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
4885 [Define if your assembler supports the .quad directive.])])
4887 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
4888 gcc_cv_as_ix86_sahf,,
4891 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
4892 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
4894 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
4895 gcc_cv_as_ix86_interunit_movq,,
4899 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
4900 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
4901 [Define if your assembler supports interunit movq mnemonic.])
4903 gcc_GAS_CHECK_FEATURE([hle prefixes],
4904 gcc_cv_as_ix86_hle,,
4905 [lock xacquire cmpxchg %esi, (%ecx)],,
4906 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
4907 [Define if your assembler supports HLE prefixes.])])
4909 gcc_GAS_CHECK_FEATURE([swap suffix],
4910 gcc_cv_as_ix86_swap,,
4911 [movl.s %esp, %ebp],,
4912 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
4913 [Define if your assembler supports the swap suffix.])])
4915 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
4916 gcc_cv_as_ix86_diff_sect_delta,,
4924 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
4925 [Define if your assembler supports the subtraction of symbols in different sections.])])
4927 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
4928 gcc_cv_as_ix86_rep_lock_prefix,,
4934 lock addl %edi, (%eax,%esi)
4935 lock orl $0, (%esp)],,
4936 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
4937 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
4939 gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
4940 gcc_cv_as_ix86_ud2,,
4942 [AC_DEFINE(HAVE_AS_IX86_UD2, 1,
4943 [Define if your assembler supports the 'ud2' mnemonic.])])
4945 # Enforce 32-bit output with gas and gld.
4946 if test x$gas = xyes; then
4947 as_ix86_gas_32_opt="--32"
4949 if echo "$ld_ver" | grep GNU > /dev/null; then
4950 if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then
4951 ld_ix86_gld_32_opt="-melf_i386_sol2"
4953 ld_ix86_gld_32_opt="-melf_i386"
4957 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
4958 gcc_cv_as_ix86_tlsgdplt,
4959 [$as_ix86_gas_32_opt],
4960 [call tls_gd@tlsgdplt],
4961 [if test x$gcc_cv_ld != x \
4962 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4963 gcc_cv_as_ix86_tlsgdplt=yes
4966 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
4967 [Define if your assembler and linker support @tlsgdplt.])])
4970 .section .tdata,"aw'$tls_section_flag'",@progbits
4972 .section .text,"ax",@progbits
4973 call tls_ld@tlsldmplt'
4975 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
4976 gcc_cv_as_ix86_tlsldmplt,
4977 [$as_ix86_gas_32_opt],
4979 [if test x$gcc_cv_ld != x \
4980 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4981 gcc_cv_as_ix86_tlsldmplt=yes
4984 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT,
4985 [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`],
4986 [Define to 1 if your assembler and linker support @tlsldmplt.])
4989 .section .text,"ax",@progbits
4991 .type _start, @function
4993 leal value@tlsldm(%ebx), %eax
4994 call ___tls_get_addr@plt
4996 .section .tdata,"aw'$tls_section_flag'",@progbits
4997 .type value, @object
4999 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc],
5000 gcc_cv_as_ix86_tlsldm,
5001 [$as_ix86_gas_32_opt],
5003 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
5004 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then
5005 if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \
5006 || dis conftest 2>/dev/null | grep nop > /dev/null; then
5007 gcc_cv_as_ix86_tlsldm=yes
5011 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM,
5012 [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`],
5013 [Define to 1 if your assembler and linker support @tlsldm.])
5024 gcc_GAS_CHECK_FEATURE([R_386_GOT32X reloc],
5025 gcc_cv_as_ix86_got32x,
5026 [$as_ix86_gas_32_opt],
5028 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
5029 && test x$gcc_cv_readelf != x \
5030 && $gcc_cv_readelf --relocs --wide conftest.o 2>&1 \
5031 | grep R_386_GOT32X > /dev/null 2>&1 \
5032 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
5033 if $gcc_cv_objdump -dw conftest 2>&1 \
5034 | grep 0xffffff > /dev/null 2>&1; then
5035 gcc_cv_as_ix86_got32x=no
5037 gcc_cv_as_ix86_got32x=yes
5041 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_GOT32X,
5042 [`if test x"$gcc_cv_as_ix86_got32x" = xyes; then echo 1; else echo 0; fi`],
5043 [Define 0/1 if your assembler and linker support @GOT.])
5045 # Check if gas and gld support "addq %r23,foo@GOTTPOFF(%rip), %r15"
5046 # with R_X86_64_CODE_6_GOTTPOFF relocation.
5047 if echo "$ld_ver" | grep GNU > /dev/null; then
5048 if $gcc_cv_ld -V 2>/dev/null | grep elf_x86_64_sol2 > /dev/null; then
5049 ld_ix86_gld_64_opt="-melf_x86_64_sol2"
5051 ld_ix86_gld_64_opt="-melf_x86_64"
5054 # Enforce 64-bit output with gas and gld.
5055 if test x$gas = xyes; then
5056 as_ix86_gas_64_opt="--64"
5061 .type _start, @function
5063 addq %r23,foo@GOTTPOFF(%rip), %r15
5064 .section .tdata,"awT",@progbits
5068 gcc_GAS_CHECK_FEATURE([R_X86_64_CODE_6_GOTTPOFF reloc],
5069 gcc_cv_as_x86_64_code_6_gottpoff,
5070 [$as_ix86_gas_64_opt],
5072 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
5073 && test x$gcc_cv_readelf != x \
5074 && $gcc_cv_readelf --relocs --wide conftest.o 2>&1 \
5075 | grep R_X86_64_CODE_6_GOTTPOFF > /dev/null 2>&1 \
5076 && $gcc_cv_ld $ld_ix86_gld_64_opt -o conftest conftest.o > /dev/null 2>&1; then
5077 if $gcc_cv_objdump -dw conftest 2>&1 \
5078 | grep "add \+\$0xf\+8,%r23,%r15" > /dev/null 2>&1; then
5079 gcc_cv_as_x86_64_code_6_gottpoff=yes
5081 gcc_cv_as_x86_64_code_6_gottpoff=no
5085 AC_DEFINE_UNQUOTED(HAVE_AS_R_X86_64_CODE_6_GOTTPOFF,
5086 [`if test x"$gcc_cv_as_x86_64_code_6_gottpoff" = xyes; then echo 1; else echo 0; fi`],
5087 [Define 0/1 if your assembler and linker support R_X86_64_CODE_6_GOTTPOFF.])
5089 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
5090 gcc_cv_as_ix86_gotoff_in_data,
5091 [$as_ix86_gas_32_opt],
5097 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
5098 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
5099 [Define true if the assembler supports '.long foo@GOTOFF'.])
5102 .section .text,"ax",@progbits
5104 .type _start, @function
5106 leal ld@tlsldm(%ecx), %eax
5107 call *___tls_get_addr@GOT(%ecx)
5108 leal gd@tlsgd(%ecx), %eax
5109 call *___tls_get_addr@GOT(%ecx)
5111 .section .tdata,"aw'$tls_section_flag'",@progbits
5119 gcc_GAS_CHECK_FEATURE([calling ___tls_get_addr via GOT],
5120 gcc_cv_as_ix86_tls_get_addr_via_got,
5121 [$as_ix86_gas_32_opt],
5123 [if test x$gcc_cv_ld != x \
5124 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
5125 gcc_cv_as_ix86_tls_get_addr_via_got=yes
5128 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLS_GET_ADDR_GOT,
5129 [`if test x"$gcc_cv_as_ix86_tls_get_addr_via_got" = xyes; then echo 1; else echo 0; fi`],
5130 [Define 0/1 if your assembler and linker support calling ___tls_get_addr via GOT.])
5134 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
5135 gcc_cv_as_ia64_ltoffx_ldxmov_relocs,,
5137 addl r15 = @ltoffx(x#), gp
5139 ld8.mov r16 = [[r15]], x#
5141 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
5142 [Define if your assembler supports ltoffx and ldxmov relocations.])])
5150 gcc_GAS_CHECK_FEATURE([.machine directive support],
5151 gcc_cv_as_machine_directive,,
5152 [ .machine ppc7400])
5153 if test x$gcc_cv_as_machine_directive != xyes; then
5154 echo "*** This target requires an assembler supporting \".machine\"" >&2
5155 echo you can get it from: https://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
5156 test x$build = x$target && exit 1
5162 *-*-aix*) conftest_s=' .machine "pwr5"
5165 *-*-darwin*) conftest_s=' .text
5167 *) conftest_s=' .machine power4
5172 gcc_GAS_CHECK_FEATURE([mfcr field support],
5173 gcc_cv_as_powerpc_mfcrf,,
5175 [AC_DEFINE(HAVE_AS_MFCRF, 1,
5176 [Define if your assembler supports mfcr field.])])
5179 *-*-aix*) conftest_s=' .machine "pwr10"
5182 *-*-darwin*) conftest_s=' .text
5184 *) conftest_s=' .machine power10
5189 gcc_GAS_CHECK_FEATURE([htm support on Power10],
5190 gcc_cv_as_power10_htm,,
5192 [AC_DEFINE(HAVE_AS_POWER10_HTM, 1,
5193 [Define if your assembler supports htm insns on power10.])])
5196 *-*-aix*) conftest_s=' .csect .text[[PR]]
5198 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
5202 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
5203 *) conftest_s=' .text
5205 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
5208 gcc_GAS_CHECK_FEATURE([rel16 relocs],
5209 gcc_cv_as_powerpc_rel16, -a32,
5211 [AC_DEFINE(HAVE_AS_REL16, 1,
5212 [Define if your assembler supports R_PPC_REL16 relocs.])])
5215 *-*-aix*) conftest_s=' .machine "pwr7"
5218 *) conftest_s=' .machine power7
5223 gcc_GAS_CHECK_FEATURE([vector-scalar support],
5224 gcc_cv_as_powerpc_vsx, -a32,
5226 [AC_DEFINE(HAVE_AS_VSX, 1,
5227 [Define if your assembler supports VSX instructions.])])
5229 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5230 gcc_cv_as_powerpc_gnu_attribute,,
5231 [.gnu_attribute 4,1],,
5232 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5233 [Define if your assembler supports .gnu_attribute.])])
5235 gcc_GAS_CHECK_FEATURE([prologue entry point marker support],
5236 gcc_cv_as_powerpc_entry_markers,-a64 --fatal-warnings,
5237 [ .reloc .,R_PPC64_ENTRY; nop],,
5238 [AC_DEFINE(HAVE_AS_ENTRY_MARKERS, 1,
5239 [Define if your assembler supports the R_PPC64_ENTRY relocation.])])
5241 gcc_GAS_CHECK_FEATURE([plt sequence marker support],
5242 gcc_cv_as_powerpc_pltseq_markers,-a32 --fatal-warnings,
5243 [ .reloc .,R_PPC_PLTSEQ; nop],,
5244 [AC_DEFINE(HAVE_AS_PLTSEQ, 1,
5245 [Define if your assembler supports R_PPC*_PLTSEQ relocations.])])
5249 gcc_GAS_CHECK_FEATURE([AIX .ref support],
5251 [ .csect stuff[[rw]]
5257 [AC_DEFINE(HAVE_AS_REF, 1,
5258 [Define if your assembler supports .ref])])
5260 gcc_GAS_CHECK_FEATURE([AIX DWARF location lists section support],
5261 gcc_cv_as_aix_dwloc,,
5266 [AC_DEFINE(HAVE_XCOFF_DWARF_EXTRAS, 1,
5267 [Define if your assembler supports AIX debug frame section label reference.])])
5273 gcc_GAS_CHECK_FEATURE([explicit relocation support: %pcrel_hi/%pcrel_lo],
5274 gcc_cv_as_mips_explicit_relocs_pcrel,,
5275 [ lui $4,%pcrel_hi(foo)],,
5276 [AC_DEFINE(MIPS_EXPLICIT_RELOCS, MIPS_EXPLICIT_RELOCS_PCREL,
5277 [Define if assembler supports %pcrel_hi/%pcrel_lo.])])
5279 if test x$gcc_cv_as_mips_explicit_relocs_pcrel = xno; then \
5280 gcc_GAS_CHECK_FEATURE([explicit relocation support: %gp_rel],
5281 gcc_cv_as_mips_explicit_relocs,,
5282 [ lw $4,%gp_rel(foo)($4)],,
5283 [AC_DEFINE(MIPS_EXPLICIT_RELOCS, MIPS_EXPLICIT_RELOCS_BASE,
5284 [Define if assembler supports %reloc.])])
5286 gcc_cv_as_mips_explicit_relocs=yes
5289 if test x$gcc_cv_as_mips_explicit_relocs = xno; then \
5290 AC_DEFINE(MIPS_EXPLICIT_RELOCS, MIPS_EXPLICIT_RELOCS_NONE,
5291 [Define if assembler supports %reloc.])
5294 gcc_GAS_CHECK_FEATURE([-mno-shared support],
5295 gcc_cv_as_mips_no_shared,[-mno-shared], [nop],,
5296 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
5297 [Define if the assembler understands -mno-shared.])])
5299 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5300 gcc_cv_as_mips_gnu_attribute,,
5301 [.gnu_attribute 4,1],,
5302 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5303 [Define if your assembler supports .gnu_attribute.])])
5305 gcc_GAS_CHECK_FEATURE([.module support],
5306 gcc_cv_as_mips_dot_module,[-32],
5309 [AC_DEFINE(HAVE_AS_DOT_MODULE, 1,
5310 [Define if your assembler supports .module.])])
5311 if test x$gcc_cv_as_mips_dot_module = xno \
5312 && test x$with_fp_32 != x; then
5314 [Requesting --with-fp-32= requires assembler support for .module.])
5317 gcc_GAS_CHECK_FEATURE([.micromips support],
5318 gcc_cv_as_micromips_support,[--fatal-warnings],
5320 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
5321 [Define if your assembler supports the .set micromips directive])])
5323 gcc_GAS_CHECK_FEATURE([.dtprelword support],
5324 gcc_cv_as_mips_dtprelword,,
5325 [.section .tdata,"awT",@progbits
5329 .dtprelword x+0x8000],,
5330 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
5331 [Define if your assembler supports .dtprelword.])])
5333 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
5334 gcc_cv_as_mips_dspr1_mult,,
5344 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
5345 [Define if your assembler supports DSPR1 mult.])])
5347 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
5348 gcc_cv_as_ld_jalr_reloc=no
5349 if test $gcc_cv_as_mips_explicit_relocs = yes; then
5350 if test $in_tree_ld = yes ; then
5351 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
5352 && test $in_tree_ld_is_elf = yes; then
5353 gcc_cv_as_ld_jalr_reloc=yes
5355 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
5356 echo ' .ent x' > conftest.s
5357 echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s
5358 echo ' lw $25,%call16(y)($28)' >> conftest.s
5359 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
5360 echo '1: jalr $25' >> conftest.s
5361 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
5362 echo '1: jalr $25' >> conftest.s
5363 echo ' .end x' >> conftest.s
5364 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
5365 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
5366 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
5367 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
5368 gcc_cv_as_ld_jalr_reloc=yes
5374 if test $gcc_cv_as_ld_jalr_reloc = yes; then
5375 if test x$target_cpu_default = x; then
5376 target_cpu_default=MASK_RELAX_PIC_CALLS
5378 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
5381 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
5383 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
5384 [gcc_cv_ld_mips_personality_relaxation],
5385 [gcc_cv_ld_mips_personality_relaxation=no
5386 if test $in_tree_ld = yes ; then
5387 if test "$gcc_cv_gld_major_version" -eq 2 \
5388 -a "$gcc_cv_gld_minor_version" -ge 21 \
5389 -o "$gcc_cv_gld_major_version" -gt 2; then
5390 gcc_cv_ld_mips_personality_relaxation=yes
5392 elif test x$gcc_cv_as != x \
5393 -a x$gcc_cv_ld != x \
5394 -a x$gcc_cv_readelf != x ; then
5395 cat > conftest.s <<EOF
5397 .cfi_personality 0x80,indirect_ptr
5404 .section .data,"aw",@progbits
5408 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
5409 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
5410 if $gcc_cv_readelf -d conftest 2>&1 \
5411 | grep TEXTREL > /dev/null 2>&1; then
5413 elif $gcc_cv_readelf --relocs conftest 2>&1 \
5414 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
5417 gcc_cv_ld_mips_personality_relaxation=yes
5421 rm -f conftest.s conftest.o conftest])
5422 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
5423 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
5424 [Define if your linker can relax absolute .eh_frame personality
5425 pointers into PC-relative form.])
5428 gcc_GAS_CHECK_FEATURE([-mnan= support],
5431 [AC_DEFINE(HAVE_AS_NAN, 1,
5432 [Define if the assembler understands -mnan=.])])
5433 if test x$gcc_cv_as_mips_nan = xno \
5434 && test x$with_nan != x; then
5436 [Requesting --with-nan= requires assembler support for -mnan=])
5440 # Earlier GAS versions generically support .gnu_attribute, but the
5441 # msp430 assembler will not do anything with it.
5442 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5443 gcc_cv_as_msp430_gnu_attribute,,
5444 [.gnu_attribute 4,1],,
5445 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5446 [Define if your assembler supports .gnu_attribute.])])
5447 gcc_GAS_CHECK_FEATURE([.mspabi_attribute support],
5448 gcc_cv_as_msp430_mspabi_attribute,,
5449 [.mspabi_attribute 4,2],,
5450 [AC_DEFINE(HAVE_AS_MSPABI_ATTRIBUTE, 1,
5451 [Define if your assembler supports .mspabi_attribute.])])
5452 if test x$enable_newlib_nano_formatted_io = xyes; then
5453 AC_DEFINE(HAVE_NEWLIB_NANO_FORMATTED_IO, 1, [Define if GCC has been
5454 configured with --enable-newlib-nano-formatted-io.])
5458 gcc_GAS_CHECK_FEATURE([.attribute support],
5459 gcc_cv_as_riscv_attribute,,
5460 [.attribute stack_align,4],,
5461 [AC_DEFINE(HAVE_AS_RISCV_ATTRIBUTE, 1,
5462 [Define if your assembler supports .attribute.])])
5463 gcc_GAS_CHECK_FEATURE([-misa-spec= support],
5464 gcc_cv_as_riscv_isa_spec,
5466 [AC_DEFINE(HAVE_AS_MISA_SPEC, 1,
5467 [Define if the assembler understands -misa-spec=.])])
5468 gcc_GAS_CHECK_FEATURE([-march=rv32i_zifencei support],
5469 gcc_cv_as_riscv_march_zifencei,
5470 [-march=rv32i_zifencei2p0],,,
5471 [AC_DEFINE(HAVE_AS_MARCH_ZIFENCEI, 1,
5472 [Define if the assembler understands -march=rv*_zifencei.])])
5473 gcc_GAS_CHECK_FEATURE([-march=rv32i_zaamo_zalrsc support],
5474 gcc_cv_as_riscv_march_zaamo_zalrsc,
5475 [-march=rv32i_zaamo_zalrsc],,,
5476 [AC_DEFINE(HAVE_AS_MARCH_ZAAMO_ZALRSC, 1,
5477 [Define if the assembler understands -march=rv*_zaamo_zalrsc.])])
5478 gcc_GAS_CHECK_FEATURE([-march=rv32i_b support],
5479 gcc_cv_as_riscv_march_b,
5481 [AC_DEFINE(HAVE_AS_MARCH_B, 1,
5482 [Define if the assembler understands -march=rv*_b.])])
5485 gcc_GAS_CHECK_FEATURE([.dtprelword support],
5486 gcc_cv_as_loongarch_dtprelword, [2,18,0],,
5487 [.section .tdata,"awT",@progbits
5491 .dtprelword x+0x8000],,
5492 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
5493 [Define if your assembler supports .dtprelword.])])
5494 gcc_GAS_CHECK_FEATURE([explicit relocation support],
5495 gcc_cv_as_loongarch_explicit_relocs,,
5496 [a:pcalau12i $t0,%pc_hi20(a)],,
5497 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
5498 [Define if your assembler supports explicit relocation.])])
5499 gcc_GAS_CHECK_FEATURE([call36 relocation support],
5500 gcc_cv_as_loongarch_call36,,
5501 [pcaddu18i $r1, %call36(a)
5503 [AC_DEFINE(HAVE_AS_SUPPORT_CALL36, 1,
5504 [Define if your assembler supports call36 relocation.])])
5505 gcc_GAS_CHECK_FEATURE([eh_frame pcrel encoding support],
5506 gcc_cv_as_loongarch_eh_frame_pcrel_encoding_support,,
5508 .cfi_personality 0x9b,a
5511 [AC_DEFINE(HAVE_AS_EH_FRAME_PCREL_ENCODING_SUPPORT, 1,
5512 [Define if your assembler supports eh_frame pcrel encoding.])])
5513 gcc_GAS_CHECK_FEATURE([-mrelax option], gcc_cv_as_loongarch_relax,
5514 [-mrelax], [.text],,
5515 [AC_DEFINE(HAVE_AS_MRELAX_OPTION, 1,
5516 [Define if your assembler supports -mrelax option.])])
5517 gcc_GAS_CHECK_FEATURE([conditional branch relaxation support],
5518 gcc_cv_as_loongarch_cond_branch_relax,
5525 [AC_DEFINE(HAVE_AS_COND_BRANCH_RELAXATION, 1,
5526 [Define if your assembler supports conditional branch relaxation.])])
5527 gcc_GAS_CHECK_FEATURE([tls le relaxation support],
5528 gcc_cv_as_loongarch_tls_le_relaxation_support,,
5529 [lu12i.w $t0,%le_hi20_r(a)],,
5530 [AC_DEFINE(HAVE_AS_TLS_LE_RELAXATION, 1,
5531 [Define if your assembler supports tls le relocation.])])
5534 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5535 gcc_cv_as_s390_gnu_attribute,,
5536 [.gnu_attribute 8,1],,
5537 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5538 [Define if your assembler supports .gnu_attribute.])])
5539 gcc_GAS_CHECK_FEATURE([.machine and .machinemode support],
5540 gcc_cv_as_s390_machine_machinemode,,
5545 [AC_DEFINE(HAVE_AS_MACHINE_MACHINEMODE, 1,
5546 [Define if your assembler supports .machine and .machinemode.])])
5547 gcc_GAS_CHECK_FEATURE([architecture modifiers support],
5548 gcc_cv_as_s390_architecture_modifiers,,
5549 [ .machine z13+vx ],,
5550 [AC_DEFINE(HAVE_AS_ARCHITECTURE_MODIFIERS, 1,
5551 [Define if your assembler supports architecture modifiers.])])
5552 gcc_GAS_CHECK_FEATURE([vector load/store alignment hints],
5553 gcc_cv_as_s390_vector_loadstore_alignment_hints,,
5554 [ vl %v24,0(%r15),3 ],,
5555 [AC_DEFINE(HAVE_AS_VECTOR_LOADSTORE_ALIGNMENT_HINTS, 1,
5556 [Define if your assembler supports vl/vst/vlm/vstm with an optional alignment hint argument.])])
5557 gcc_GAS_CHECK_FEATURE([vector load/store alignment hints on z13],
5558 gcc_cv_as_s390_vector_loadstore_alignment_hints_on_z13, [-mzarch -march=z13],
5559 [ vl %v24,0(%r15),3 ],,
5560 [AC_DEFINE(HAVE_AS_VECTOR_LOADSTORE_ALIGNMENT_HINTS_ON_Z13, 1,
5561 [Define if your assembler supports vl/vst/vlm/vstm with an optional alignment hint argument on z13.])])
5566 # Mips, LoongArch and HP-UX need the GNU assembler.
5567 # Linux on IA64 might be able to use the Intel assembler.
5570 mips*-*-* | loongarch*-*-* | *-*-hpux* )
5571 if test x$gas_flag = xyes \
5572 || test x"$host" != x"$build" \
5573 || test ! -x "$gcc_cv_as" \
5574 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
5577 echo "*** This configuration requires the GNU assembler" >&2
5583 # AMD GCN needs the LLVM assembler and linker.
5584 # Test that LLVM is at least 13.0.1.
5587 AC_MSG_CHECKING(llvm assembler version)
5588 gcc_cv_as_version="unknown"
5589 if test x$gcc_cv_as != x; then
5590 gcc_cv_as_version=`$gcc_cv_as --version 2>&1 | sed -ne '/version/s/.* \([[0-9]]\)/\1/p' || echo error`
5591 case "$gcc_cv_as_version" in
5592 13.0.[[1-9]]*) ;; # 13.0.1+
5593 13.[[1-9]]*) ;; # 13.1+
5594 1[[4-9]]*) ;; # 14..19
5595 [[2-9]][[0-9]]*) ;; # 20..99
5596 [[1-9]][[0-9]][[0-9]]*) ;; # 100+
5597 error) AC_MSG_ERROR([cannot determine LLVM version]) ;;
5598 *) AC_MSG_ERROR([LLVM 13.0.1 or later is required (found LLVM $gcc_cv_as_version)]) ;;
5601 AC_MSG_RESULT([$gcc_cv_as_version, ok])
5607 gcc_GAS_CHECK_FEATURE([assembler for arm accepts context-specific architecture extensions],
5608 gcc_cv_as_arm_option_extensions,
5609 [-march=armv8.1-m.main+mve],
5614 [AC_DEFINE(HAVE_GAS_ARM_EXTENDED_ARCH, 1,
5615 [Define if your Arm assembler permits context-specific feature extensions.])])
5618 # ??? Not all targets support dwarf2 debug_line, even within a version
5619 # of gas. Moreover, we need to emit a valid instruction to trigger any
5620 # info to the output file. So, as supported targets are added to gas 2.11,
5621 # add some instruction here to (also) show we expect this might work.
5622 # ??? Once 2.11 is released, probably need to add first known working
5623 # version to the per-target configury.
5625 aarch64 | alpha | arc | arm | avr | bfin | cris | csky | i386 | loongarch | m32c \
5626 | m68k | microblaze | mips | nds32 | pa | riscv | rs6000 | score | sparc \
5627 | visium | xstormy16 | xtensa | ft32)
5637 if test x"$insn" != x; then
5639 .file 1 \"conftest.s\"
5642 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
5643 gcc_cv_as_dwarf2_debug_line,,
5645 [if test x$gcc_cv_objdump != x \
5646 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
5647 | grep debug_line > /dev/null 2>&1; then
5648 gcc_cv_as_dwarf2_debug_line=yes
5649 elif test x$gcc_cv_otool != x \
5650 && $gcc_cv_otool -l conftest.o 2> /dev/null \
5651 | grep debug_line > /dev/null 2>&1; then
5652 gcc_cv_as_dwarf2_debug_line=yes
5655 # The .debug_line file table must be in the exact order that
5656 # we specified the files, since these indices are also used
5657 # by DW_AT_decl_file. Approximate this test by testing if
5658 # the assembler bitches if the same index is assigned twice.
5659 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
5660 gcc_cv_as_dwarf2_file_buggy,,
5664 if test $gcc_cv_as_dwarf2_debug_line = yes \
5665 && test $gcc_cv_as_dwarf2_file_buggy = no; then
5666 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
5667 [Define if your assembler supports dwarf2 .file/.loc directives,
5668 and preserves file table indices exactly as given.])
5670 if test $gcc_cv_as_leb128 = yes; then
5672 .file 1 \"conftest.s\"
5673 .loc 1 3 0 view .LVU1
5679 gcc_GAS_CHECK_FEATURE([dwarf2 debug_view support],
5680 gcc_cv_as_dwarf2_debug_view,,
5682 [AC_DEFINE(HAVE_AS_DWARF2_DEBUG_VIEW, 1,
5683 [Define if your assembler supports views in dwarf2 .loc directives.])])
5687 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
5688 gcc_cv_as_gdwarf2_flag,
5689 [--gdwarf2], [$insn],,
5690 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
5691 [Define if your assembler supports the --gdwarf2 option.])])
5693 gcc_GAS_CHECK_FEATURE([--gdwarf-5 option],
5694 gcc_cv_as_gdwarf_5_flag,
5695 [--gdwarf-5], [$insn],
5696 [if test x$gcc_cv_objdump != x \
5697 && $gcc_cv_objdump -Wi conftest.o 2>&1 \
5698 | grep DW_TAG_compile_unit > /dev/null 2>&1; then
5699 gcc_cv_as_gdwarf_5_flag=yes;
5700 fi],[AC_DEFINE(HAVE_AS_GDWARF_5_DEBUG_FLAG, 1,
5701 [Define if your assembler supports the --gdwarf-5 option.])])
5704 win32 | pe | cygwin* | mingw32*)
5705 section_flags=\"dr\"
5706 function_type=".def foo; .scl 2; .type 32; .endef"
5709 section_flags=\"\",%progbits
5710 function_type=".type foo, %function"
5711 function_size=".size foo, .-foo";;
5713 dwarf4_debug_info_size=0x46
5714 dwarf4_high_pc_form=7
5715 dwarf4_debug_aranges_size=0x2c
5717 for dwarf4_addr_size in 8 4; do
5733 .section .debug_info,$section_flags
5735 .4byte $dwarf4_debug_info_size
5737 .4byte .Ldebug_abbrev0
5738 .byte 0x$dwarf4_addr_size
5740 .ascii \"GNU C17\\0\"
5744 .${dwarf4_addr_size}byte .Ltext0
5745 .${dwarf4_addr_size}byte .Letext0-.Ltext0
5746 .4byte .Ldebug_line0
5752 .${dwarf4_addr_size}byte .LFB0
5753 .${dwarf4_addr_size}byte .LFE0-.LFB0
5757 .section .debug_abbrev,$section_flags
5773 .byte 0x$dwarf4_high_pc_form
5794 .byte 0x$dwarf4_high_pc_form
5800 .section .debug_aranges,$section_flags
5801 .4byte $dwarf4_debug_aranges_size
5803 .4byte .Ldebug_info0
5808 .${dwarf4_addr_size}byte .Ltext0
5809 .${dwarf4_addr_size}byte .Letext0-.Ltext0
5810 .${dwarf4_addr_size}byte 0
5811 .${dwarf4_addr_size}byte 0
5812 .section .debug_line,$section_flags
5814 .4byte .LELT0-.LSLT0
5817 .4byte .LELTP0-.LASLTP0
5845 .byte 0x$dwarf4_line_sz
5847 .${dwarf4_addr_size}byte .LM1
5852 .byte 0x$dwarf4_line_sz
5854 .${dwarf4_addr_size}byte .LM2
5859 .byte 0x$dwarf4_line_sz
5861 .${dwarf4_addr_size}byte .Letext0
5866 .section .debug_str,$section_flags
5870 if test $dwarf4_addr_size = 4; then
5871 gcc_GAS_CHECK_FEATURE([assembly of compiler generated 32-bit .debug_line],
5872 gcc_cv_as_debug_line_32_flag,,
5874 [dwarf4_success=yes])
5876 gcc_GAS_CHECK_FEATURE([assembly of compiler generated 64-bit .debug_line],
5877 gcc_cv_as_debug_line_64_flag,,
5879 [dwarf4_success=yes])
5881 if test $dwarf4_success = yes; then
5883 gcc_GAS_CHECK_FEATURE([--gdwarf-4 not refusing compiler generated .debug_line],
5884 gcc_cv_as_dwarf_4_debug_line_flag,
5885 [--gdwarf-4], [$conftest_s],,
5886 [dwarf4_success=yes])
5889 dwarf4_debug_info_size=0x36
5890 dwarf4_high_pc_form=6
5891 dwarf4_debug_aranges_size=0x1c
5895 if test $dwarf4_success = yes; then
5913 gcc_GAS_CHECK_FEATURE([--gdwarf-4 with the APP marker],
5914 gcc_cv_as_dwarf_4_app_flag,
5915 [--gdwarf-4], [$conftest_s],, [dwarf4_success=yes])
5918 if test $dwarf4_success = yes; then
5928 gcc_GAS_CHECK_FEATURE([working --gdwarf-4/--gdwarf-5 for all sources],
5929 gcc_cv_as_working_gdwarf_n_flag,
5933 if test x$gcc_cv_objdump != x \
5934 && $gcc_cv_objdump -W conftest.o 2>&1 \
5935 | grep conftest.s > /dev/null 2>&1; then
5936 gcc_cv_as_working_gdwarf_n_flag=no
5938 gcc_cv_as_working_gdwarf_n_flag=yes
5940 changequote([,])dnl])
5941 if test $gcc_cv_as_working_gdwarf_n_flag = yes; then
5942 AC_DEFINE(HAVE_AS_WORKING_DWARF_N_FLAG, 1,
5943 [Define if your assembler supports --gdwarf-4/--gdwarf-5 even with
5944 compiler generated .debug_line.])
5948 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
5949 gcc_cv_as_debug_prefix_map_flag,
5950 [--debug-prefix-map /a=/b], [$insn],,
5951 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
5952 [Define if your assembler supports the --debug-prefix-map option.])])
5955 gcc_GAS_CHECK_FEATURE([compressed debug sections],
5956 gcc_cv_as_compress_debug,,,
5957 [# gas compiled without zlib cannot compress debug sections and warns
5958 # about it, but still exits successfully. So check for this, too.
5959 if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null
5961 gcc_cv_as_compress_debug=0
5962 elif $gcc_cv_as --compress-debug-sections=zlib -o conftest.o conftest.s > /dev/null 2>&1
5964 gcc_cv_as_compress_debug=1
5965 gcc_cv_as_compress_debug_option="--compress-debug-sections"
5966 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
5967 # Since binutils 2.40, gas supports --compress-debug-sections=zstd.
5968 if $gcc_cv_as --compress-debug-sections=zstd -o conftest.o conftest.s > /dev/null 2>&1
5970 gcc_cv_as_compress_debug=2
5973 gcc_cv_as_compress_debug=0
5975 AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug,
5976 [Define to the level of your assembler's compressed debug section support.])
5977 AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option",
5978 [Define to the assembler option to enable compressed debug sections.])
5979 AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option",
5980 [Define to the assembler option to disable compressed debug sections.])
5982 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,,
5984 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
5985 [Define if your assembler supports .lcomm with an alignment field.])])
5987 if test x$with_sysroot = x && test x$host = x$target \
5988 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
5989 && test "$prefix" != "NONE"; then
5990 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
5991 [Define to PREFIX/include if cpp should also search that directory.])
5994 # Determine the version of glibc, if any, used on the target.
5995 AC_MSG_CHECKING([for target glibc version])
5996 AC_ARG_WITH([glibc-version],
5997 [AS_HELP_STRING([--with-glibc-version=M.N],
5998 [assume GCC used with glibc version M.N or later])], [
5999 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
6000 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
6001 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
6003 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
6005 glibc_version_major=0
6006 glibc_version_minor=0
6007 [if test -f $target_header_dir/features.h \
6008 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
6009 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
6010 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
6011 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
6013 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
6014 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MAJOR], [$glibc_version_major],
6015 [GNU C Library major version number used on the target, or 0.])
6016 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MINOR], [$glibc_version_minor],
6017 [GNU C Library minor version number used on the target, or 0.])
6019 AC_ARG_ENABLE(gnu-unique-object,
6020 [AS_HELP_STRING([--enable-gnu-unique-object],
6021 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
6022 [case $enable_gnu_unique_object in
6024 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
6025 Valid choices are 'yes' and 'no'.]) ;;
6027 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,,
6028 [.type foo, '$target_type_format_char'gnu_unique_object],,
6029 # We need to unquote above to to use the definition from config.gcc.
6030 # Also check for ld.so support, i.e. glibc 2.11 or higher.
6031 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
6033 if test x$enable_gnu_unique_object = xyes; then
6034 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
6035 [Define if your assembler supports @gnu_unique_object.])
6038 AC_CACHE_CHECK([assembler for tolerance to line number 0],
6039 [gcc_cv_as_line_zero],
6040 [gcc_cv_as_line_zero=no
6041 if test "x$gcc_cv_as" != x; then
6042 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
6043 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
6044 test "x`cat conftest.out`" = x
6046 gcc_cv_as_line_zero=yes
6048 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
6049 cat conftest.s >&AS_MESSAGE_LOG_FD
6050 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
6051 cat conftest.out >&AS_MESSAGE_LOG_FD
6053 rm -f conftest.o conftest.s conftest.out
6055 if test "x$gcc_cv_as_line_zero" = xyes; then
6056 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
6057 [Define if the assembler won't complain about a line such as # 0 "" 2.])
6060 AC_MSG_CHECKING(support for thin archives)
6061 thin_archive_support=no
6062 echo 'int main (void) { return 0; }' > conftest.c
6063 if ($AR --version | sed 1q | grep "GNU ar" \
6064 && $CC $CFLAGS -c conftest.c \
6065 && $AR rcT conftest.a conftest.o \
6066 && $CC $CFLAGS $LDFLAGS -o conftest conftest.a) >/dev/null 2>&1; then
6067 thin_archive_support=yes
6069 rm -f conftest.c conftest.o conftest.a conftest
6070 AC_MSG_RESULT($thin_archive_support)
6071 AC_SUBST(thin_archive_support)
6073 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
6074 gcc_cv_ld_eh_frame_hdr=no
6075 if test $in_tree_ld = yes ; then
6076 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
6077 && test $in_tree_ld_is_elf = yes; then
6078 gcc_cv_ld_eh_frame_hdr=yes
6080 elif test x$gcc_cv_ld != x; then
6081 if echo "$ld_ver" | grep GNU > /dev/null; then
6082 # Check if linker supports --eh-frame-hdr option
6083 if $gcc_cv_ld --help 2>&1 | grep eh-frame-hdr > /dev/null; then
6084 gcc_cv_ld_eh_frame_hdr=yes
6089 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
6090 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
6091 gcc_cv_ld_eh_frame_hdr=yes
6097 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
6098 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
6099 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
6100 [Define if your linker supports .eh_frame_hdr.])
6102 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
6104 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
6105 gcc_cv_ld_eh_frame_ciev3=no
6106 if test $in_tree_ld = yes ; then
6107 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
6108 && test $in_tree_ld_is_elf = yes; then
6109 gcc_cv_ld_eh_frame_ciev3=yes
6111 elif test x$gcc_cv_ld != x; then
6112 if echo "$ld_ver" | grep GNU > /dev/null; then
6113 gcc_cv_ld_eh_frame_ciev3=yes
6114 if test 0"$ld_date" -lt 20040513; then
6115 if test -n "$ld_date"; then
6116 # If there was date string, but was earlier than 2004-05-13, fail
6117 gcc_cv_ld_eh_frame_ciev3=no
6118 elif test "$ld_vers_major" -lt 2; then
6119 gcc_cv_ld_eh_frame_ciev3=no
6120 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
6121 gcc_cv_ld_eh_frame_ciev3=no
6127 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
6128 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
6129 gcc_cv_ld_eh_frame_ciev3=yes
6135 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
6136 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
6137 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
6138 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
6140 AC_MSG_CHECKING(linker position independent executable support)
6142 if test $in_tree_ld = yes ; then
6144 # Full PIE support on Solaris was only introduced in gld 2.26.
6145 *-*-solaris2*) gcc_gld_pie_min_version=26 ;;
6146 *) gcc_gld_pie_min_version=15 ;;
6148 if test "$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 \
6149 && test $in_tree_ld_is_elf = yes; then
6152 elif test x$gcc_cv_ld != x; then
6153 # Check if linker supports -pie option
6154 if $gcc_cv_ld --help 2>&1 | grep -- -pie > /dev/null; then
6158 if echo "$ld_ver" | grep GNU > /dev/null \
6159 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
6166 *-*-solaris2.1[[1-9]]*)
6167 # Solaris 11.3 added PIE support.
6168 if $gcc_cv_ld -z help 2>&1 | grep -- type.*pie > /dev/null; then
6175 if test x"$gcc_cv_ld_pie" = xyes; then
6176 AC_DEFINE(HAVE_LD_PIE, 1,
6177 [Define if your linker supports PIE option.])
6179 AC_MSG_RESULT($gcc_cv_ld_pie)
6181 AC_MSG_CHECKING(linker PIE support with copy reloc)
6182 gcc_cv_ld_pie_copyreloc=no
6183 if test $gcc_cv_ld_pie = yes ; then
6184 if test $in_tree_ld = yes ; then
6185 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6186 gcc_cv_ld_pie_copyreloc=yes
6188 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6189 # Check if linker supports -pie option with copy reloc
6191 i?86-*-linux* | x86_64-*-linux*)
6192 cat > conftest1.s <<EOF
6195 .type a_glob, @object
6200 cat > conftest2.s <<EOF
6203 .type main, @function
6205 movl %eax, a_glob(%rip)
6208 .section .data.rel,"aw",@progbits
6213 if $gcc_cv_as --64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
6214 && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \
6215 && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
6216 && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then
6217 gcc_cv_ld_pie_copyreloc=yes
6219 rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s
6224 AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC,
6225 [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`],
6226 [Define 0/1 if your linker supports -pie option with copy reloc.])
6227 AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc)
6229 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
6230 gcc_cv_ld_eh_gc_sections=no
6231 if test $in_tree_ld = yes ; then
6232 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
6233 && test $in_tree_ld_is_elf = yes; then
6234 gcc_cv_ld_eh_gc_sections=yes
6236 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
6237 cat > conftest.s <<EOF
6240 .type _start, @function
6243 .size _start, .-_start
6244 .section .text.foo,"ax",@progbits
6245 .type foo, @function
6249 .section .gcc_except_table.foo,"a",@progbits
6252 .section .eh_frame,"a",@progbits
6255 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
6256 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
6257 | grep "gc-sections option ignored" > /dev/null; then
6258 gcc_cv_ld_eh_gc_sections=no
6259 elif $gcc_cv_objdump -h conftest 2> /dev/null \
6260 | grep gcc_except_table > /dev/null; then
6261 gcc_cv_ld_eh_gc_sections=yes
6262 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
6263 if test x$gcc_cv_as_comdat_group != xyes; then
6264 gcc_cv_ld_eh_gc_sections=no
6265 cat > conftest.s <<EOF
6268 .type _start, @function
6271 .size _start, .-_start
6272 .section .gnu.linkonce.t.foo,"ax",@progbits
6273 .type foo, @function
6277 .section .gcc_except_table.foo,"a",@progbits
6280 .section .eh_frame,"a",@progbits
6283 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
6284 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
6285 | grep "gc-sections option ignored" > /dev/null; then
6286 gcc_cv_ld_eh_gc_sections=no
6287 elif $gcc_cv_objdump -h conftest 2> /dev/null \
6288 | grep gcc_except_table > /dev/null; then
6289 gcc_cv_ld_eh_gc_sections=yes
6295 rm -f conftest.s conftest.o conftest
6299 # ??? This apparently exposes a binutils bug with PC-relative relocations.
6300 gcc_cv_ld_eh_gc_sections=no
6303 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
6304 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
6305 [Define if your linker supports garbage collection of
6306 sections in presence of EH frames.])
6308 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
6310 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
6311 gcc_cv_ld_eh_gc_sections_bug=no
6312 if test $in_tree_ld = yes ; then
6313 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
6314 && test $in_tree_ld_is_elf = yes; then
6315 gcc_cv_ld_eh_gc_sections_bug=yes
6317 elif test x$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
6318 gcc_cv_ld_eh_gc_sections_bug=yes
6319 cat > conftest.s <<EOF
6322 .type _start, @function
6325 .size _start, .-_start
6326 .section .text.startup.foo,"ax",@progbits
6327 .type foo, @function
6331 .section .gcc_except_table.foo,"a",@progbits
6334 .section .eh_frame,"a",@progbits
6337 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
6338 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
6339 | grep "gc-sections option ignored" > /dev/null; then
6341 elif $gcc_cv_objdump -h conftest 2> /dev/null \
6342 | grep gcc_except_table > /dev/null; then
6343 gcc_cv_ld_eh_gc_sections_bug=no
6346 rm -f conftest.s conftest.o conftest
6348 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
6349 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
6350 [Define if your linker has buggy garbage collection of
6351 sections support when .text.startup.foo like sections are used.])
6353 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
6355 AC_MSG_CHECKING(linker for compressed debug sections)
6356 # GNU ld/gold support --compressed-debug-sections=zlib since binutils 2.26.
6357 if $gcc_cv_ld --help 2>&1 | grep -- '--compress-debug-sections.*\<zlib-gabi\>' > /dev/null; then
6358 gcc_cv_ld_compress_debug=1
6359 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
6360 # Detect zstd debug section compression support
6361 if $gcc_cv_ld --help 2>&1 | grep -- '--compress-debug-sections.*\<zstd\>' > /dev/null; then
6362 gcc_cv_ld_compress_debug=2
6368 # Introduced in Solaris 11.2.
6369 if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then
6370 gcc_cv_ld_compress_debug=1
6371 gcc_cv_ld_compress_debug_option="-z compress-sections"
6373 gcc_cv_ld_compress_debug=0
6377 # Assume linkers other than GNU ld don't support compessed debug
6379 gcc_cv_ld_compress_debug=0
6384 AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug,
6385 [Define to the level of your linker's compressed debug section support.])
6386 AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option",
6387 [Define to the linker option to enable compressed debug sections.])
6388 AC_MSG_RESULT($gcc_cv_ld_compress_debug)
6390 if test x"$ld64_flag" = x"yes"; then
6392 # Set defaults for possibly untestable items.
6393 gcc_cv_ld64_export_dynamic=0
6394 gcc_cv_ld64_platform_version=0
6395 gcc_cv_ld64_demangle=0
6397 if test "$build" = "$host"; then
6403 # On Darwin, because of FAT library support, it is often possible to execute
6404 # exes from compatible archs even when the host differs from the build system.
6405 case "$build","$host" in
6406 x86_64-*-darwin*,i?86-*-darwin* | powerpc64*-*-darwin*,powerpc*-*-darwin*)
6411 # If the configurer specified a minimum ld64 version to be supported, then use
6412 # that to determine feature support.
6413 if test x"${gcc_cv_ld64_version}" != x; then
6414 AC_MSG_CHECKING(ld64 specified version)
6415 gcc_cv_ld64_major=`echo "$gcc_cv_ld64_version" | sed -e 's/\..*//'`
6416 AC_MSG_RESULT($gcc_cv_ld64_major)
6417 if test "$gcc_cv_ld64_major" -ge 97; then
6418 gcc_cv_ld64_demangle=1
6420 if test "$gcc_cv_ld64_major" -ge 236; then
6421 gcc_cv_ld64_export_dynamic=1
6423 if test "$gcc_cv_ld64_major" -ge 512; then
6424 gcc_cv_ld64_platform_version=1
6426 elif test -x "$gcc_cv_ld" -a "$darwin_try_test" -eq 1; then
6427 # If the version was not specified, try to find it.
6428 AC_MSG_CHECKING(linker version)
6429 if test x"${gcc_cv_ld64_version}" = x; then
6430 gcc_cv_ld64_version=`$gcc_cv_ld -v 2>&1 | $EGREP 'ld64|dyld' \
6431 | sed -e 's/.*ld64-//' -e 's/.*dyld-//'| awk '{print $1}'`
6433 AC_MSG_RESULT($gcc_cv_ld64_version)
6435 AC_MSG_CHECKING(linker for -demangle support)
6436 gcc_cv_ld64_demangle=1
6437 if $gcc_cv_ld -demangle < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then
6438 gcc_cv_ld64_demangle=0
6440 AC_MSG_RESULT($gcc_cv_ld64_demangle)
6442 AC_MSG_CHECKING(linker for -export_dynamic support)
6443 gcc_cv_ld64_export_dynamic=1
6444 if $gcc_cv_ld -export_dynamic < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then
6445 gcc_cv_ld64_export_dynamic=0
6447 AC_MSG_RESULT($gcc_cv_ld64_export_dynamic)
6449 AC_MSG_CHECKING(linker for -platform_version support)
6450 gcc_cv_ld64_platform_version=1
6451 if $gcc_cv_ld -platform_version macos 10.5 0.0 < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then
6452 gcc_cv_ld64_platform_version=0
6454 AC_MSG_RESULT($gcc_cv_ld64_platform_version)
6457 if test x"${gcc_cv_ld64_version}" != x; then
6458 AC_DEFINE_UNQUOTED(LD64_VERSION, "${gcc_cv_ld64_version}",
6459 [Define to ld64 version.])
6462 AC_DEFINE_UNQUOTED(LD64_HAS_DEMANGLE, $gcc_cv_ld64_demangle,
6463 [Define to 1 if ld64 supports '-demangle'.])
6465 AC_DEFINE_UNQUOTED(LD64_HAS_EXPORT_DYNAMIC, $gcc_cv_ld64_export_dynamic,
6466 [Define to 1 if ld64 supports '-export_dynamic'.])
6468 AC_DEFINE_UNQUOTED(LD64_HAS_PLATFORM_VERSION, $gcc_cv_ld64_platform_version,
6469 [Define to 1 if ld64 supports '-platform_version'.])
6472 if test x"$dsymutil_flag" = x"yes"; then
6474 # If the user specified a dsymutil path, then we will already have the
6475 # version string, otherwise, pick it up.
6476 if test x"$gcc_cv_dsymutil" = x; then
6477 AC_MSG_WARN([dsymutil is a required tool for this system, but not found])
6478 dsymutil_vers="tool unspecified"
6479 elif test x"$dsymutil_vers" = x; then
6480 dsymutil_vers=`$gcc_cv_dsymutil -v /dev/null 2>&1`
6483 dsymutil_temp=`echo $dsymutil_vers | sed 1q`
6484 AC_MSG_CHECKING(dsymutil version "$dsymutil_temp")
6485 if echo $dsymutil_temp | grep dwarfutils- > /dev/null; then
6486 dsymutil_kind=DWARFUTILS
6487 dsymutil_vers=`echo $dsymutil_temp | sed 's/.*dwarfutils-\([[0-9\.]]*\).*/\1/'`
6488 elif echo $dsymutil_temp | grep clang- > /dev/null; then
6490 dsymutil_vers=`echo $dsymutil_temp | sed 's/.*clang-\([[0-9\.]]*\).*/\1/'`
6491 elif echo $dsymutil_temp | grep 'LLVM version ' > /dev/null; then
6493 dsymutil_vers=`echo $dsymutil_temp | sed 's/.*LLVM\ version\ \([[0-9\.]]*\).*/\1/'`
6495 dsymutil_kind=DET_UNKNOWN
6498 dsymutil_major=`expr "$dsymutil_vers" : '\([[0-9]]*\)'`
6499 dsymutil_minor=`expr "$dsymutil_vers" : '[[0-9]]*\.\([[0-9]]*\)'`
6500 dsymutil_tiny=`expr "$dsymutil_vers" : '[[0-9]]*\.[[0-9]]*\.\([[0-9]]*\)'`
6501 if test x"${dsymutil_minor}" = x; then
6504 if test x"${dsymutil_tiny}" = x; then
6507 AC_DEFINE_UNQUOTED(DSYMUTIL_VERSION, [$dsymutil_kind,${dsymutil_major},${dsymutil_minor},${dsymutil_tiny}],
6508 [Define to the dsymutil version.])
6509 AC_MSG_RESULT($dsymutil_vers : $dsymutil_kind ${dsymutil_major} ${dsymutil_minor} ${dsymutil_tiny} )
6513 win32 | pe | cygwin* | mingw32*)
6514 AC_MSG_CHECKING(broken PE linker dwarf5 support)
6515 gcc_cv_ld_broken_pe_dwarf5=yes
6516 if test $in_tree_ld = yes ; then
6517 if grep -q '\.debug_loclists.*BLOCK.*__section_alignment__.*NOLOAD.*:' \
6518 $gcc_cv_ld_gld_srcdir/scripttempl/pe*.sc \
6519 && grep -q '\.debug_rnglists.*BLOCK.*__section_alignment__.*NOLOAD.*:' \
6520 $gcc_cv_ld_gld_srcdir/scripttempl/pe*.sc; then
6521 gcc_cv_ld_broken_pe_dwarf5=no
6524 if $gcc_cv_ld --verbose 2>&1 | grep -q '\.debug_loclists.*BLOCK.*__section_alignment__.*NOLOAD.*:' \
6525 && $gcc_cv_ld --verbose 2>&1 | grep -q '\.debug_rnglists.*BLOCK.*__section_alignment__.*NOLOAD.*:'; then
6526 gcc_cv_ld_broken_pe_dwarf5=no
6529 if test x$gcc_cv_ld_broken_pe_dwarf5 = xyes; then
6530 AC_DEFINE(HAVE_LD_BROKEN_PE_DWARF5, 1,
6531 [Define if the PE linker has broken DWARF 5 support.])
6533 AC_MSG_RESULT($gcc_cv_ld_broken_pe_dwarf5)
6535 AC_MSG_CHECKING(PE linker --disable-dynamicbase support)
6536 gcc_cv_ld_disable_dynamicbase=no
6537 if test $in_tree_ld = yes; then
6538 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 36 -o "$gcc_cv_gld_major_version" -gt 2; then \
6539 gcc_cv_ld_disable_dynamicbase=yes
6542 if $gcc_cv_ld --help 2>&1 | grep -q 'disable\-]dynamicbase' > /dev/null; then
6543 gcc_cv_ld_disable_dynamicbase=yes
6546 if test x"$gcc_cv_ld_disable_dynamicbase" = xyes; then
6547 AC_DEFINE(HAVE_LD_PE_DISABLE_DYNAMICBASE, 1,
6548 [Define if the PE linker supports --disable-dynamicbase option.])
6550 AC_MSG_RESULT($gcc_cv_ld_disable_dynamicbase)
6558 AC_CACHE_CHECK(linker --as-needed support,
6559 gcc_cv_ld_as_needed,
6560 [gcc_cv_ld_as_needed=no
6561 gcc_cv_ld_as_needed_option='--as-needed'
6562 gcc_cv_ld_no_as_needed_option='--no-as-needed'
6563 if test $in_tree_ld = yes ; then
6564 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
6565 && test $in_tree_ld_is_elf = yes; then
6566 gcc_cv_ld_as_needed=yes
6567 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 28; then
6568 gcc_cv_ld_as_needed_option='--push-state --as-needed'
6569 gcc_cv_ld_no_as_needed_option='--pop-state'
6572 elif test x$gcc_cv_ld != x; then
6573 # Check if linker supports --as-needed and --no-as-needed options
6574 if $gcc_cv_ld --help 2>&1 | grep as-needed > /dev/null; then
6575 gcc_cv_ld_as_needed=yes
6576 if $gcc_cv_ld --help 2>&1 | grep push-state > /dev/null \
6577 && $gcc_cv_ld --help 2>&1 | grep pop-state > /dev/null \
6578 && echo "$ld_ver" | grep GNU > /dev/null \
6579 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 28; then
6580 # Use these options only when both ld.bfd and ld.gold support
6581 # --push-state/--pop-state, which unfortunately wasn't added
6583 gcc_cv_ld_as_needed_option='--push-state --as-needed'
6584 gcc_cv_ld_no_as_needed_option='--pop-state'
6587 case "$target:$gnu_ld" in
6589 # Solaris 2 ld always supports -z ignore/-z record. Prefer the native
6591 gcc_cv_ld_as_needed=yes
6592 gcc_cv_ld_as_needed_option="-z ignore"
6593 gcc_cv_ld_no_as_needed_option="-z record"
6597 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
6598 # dl_iterate_phdr, i.e. since Solaris 11.
6600 *-*-solaris2.1[[1-9]]*)
6602 i?86-*-* | x86_64-*-*)
6603 if echo "$ld_ver" | grep GNU > /dev/null; then
6604 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
6605 gcc_cv_ld_as_needed=no
6611 gcc_cv_ld_as_needed=no
6615 if test x"$gcc_cv_ld_as_needed" = xyes; then
6616 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
6617 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
6618 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
6619 [Define to the linker option to ignore unused dependencies.])
6620 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
6621 [Define to the linker option to keep unused dependencies.])
6624 AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities)
6625 saved_LDFLAGS="$LDFLAGS"
6626 for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do
6627 LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map"
6628 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
6629 [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no])
6631 LDFLAGS="$saved_LDFLAGS"
6632 if test "x$gcc_cv_ld_clearcap" = xyes; then
6633 AC_DEFINE([HAVE_LD_CLEARCAP], 1,
6634 [Define if the linker supports clearing hardware capabilities via mapfile.])
6635 AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map])
6637 AC_MSG_RESULT($gcc_cv_ld_clearcap)
6643 emul_name="-melf32lppc"
6646 emul_name="-melf32ppc"
6649 AC_CACHE_CHECK(linker .gnu.attributes long double support,
6651 [gcc_cv_ld_ppc_attr=no
6652 if test x"$ld_is_gold" = xyes; then
6653 gcc_cv_ld_ppc_attr=yes
6654 elif test $in_tree_ld = yes ; then
6655 if test "$gcc_cv_gld_major_version" -eq 2 \
6656 -a "$gcc_cv_gld_minor_version" -ge 28 \
6657 -o "$gcc_cv_gld_major_version" -gt 2; then
6658 gcc_cv_ld_ppc_attr=yes
6660 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6661 # check that merging the long double .gnu_attribute doesn't warn
6662 cat > conftest1.s <<EOF
6665 cat > conftest2.s <<EOF
6668 if $gcc_cv_as -a32 -o conftest1.o conftest1.s > /dev/null 2>&1 \
6669 && $gcc_cv_as -a32 -o conftest2.o conftest2.s > /dev/null 2>&1 \
6670 && $gcc_cv_ld $emul_name -r -o conftest.o conftest1.o conftest2.o > /dev/null 2> conftest.err \
6671 && test ! -s conftest.err; then
6672 gcc_cv_ld_ppc_attr=yes
6674 rm -f conftest.err conftest.o conftest1.o conftest2.o conftest1.s conftest2.s
6677 if test x$gcc_cv_ld_ppc_attr = xyes; then
6678 AC_DEFINE(HAVE_LD_PPC_GNU_ATTR_LONG_DOUBLE, 1,
6679 [Define if your PowerPC linker has .gnu.attributes long double support.])
6684 case "$target:$tm_file" in
6685 powerpc64*-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
6688 emul_name="-melf64lppc"
6691 emul_name="-melf64ppc"
6694 emul_name="-melf64lppc_fbsd"
6697 emul_name="-melf64ppc_fbsd"
6700 AC_CACHE_CHECK(linker support for omitting dot symbols,
6701 gcc_cv_ld_no_dot_syms,
6702 [gcc_cv_ld_no_dot_syms=no
6703 if test x"$ld_is_gold" = xyes; then
6704 gcc_cv_ld_no_dot_syms=yes
6705 elif test $in_tree_ld = yes ; then
6706 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
6707 gcc_cv_ld_no_dot_syms=yes
6709 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6710 cat > conftest1.s <<EOF
6714 cat > conftest2.s <<EOF
6715 .section ".opd","aw"
6720 .quad .LEfoo,.TOC.@tocbase,0
6726 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
6727 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
6728 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
6729 gcc_cv_ld_no_dot_syms=yes
6731 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
6734 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
6735 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
6736 [Define if your PowerPC64 linker only needs function descriptor syms.])
6739 AC_CACHE_CHECK(linker large toc support,
6740 gcc_cv_ld_large_toc,
6741 [gcc_cv_ld_large_toc=no
6742 if test x"$ld_is_gold" = xyes; then
6743 gcc_cv_ld_large_toc=yes
6744 elif test $in_tree_ld = yes ; then
6745 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
6746 gcc_cv_ld_large_toc=yes
6748 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6749 cat > conftest.s <<EOF
6750 .section ".tbss","awT",@nobits
6756 addis 9,13,ie0@got@tprel@ha
6757 ld 9,ie0@got@tprel@l(9)
6759 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
6760 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
6761 gcc_cv_ld_large_toc=yes
6763 rm -f conftest conftest.o conftest.s
6766 if test x"$gcc_cv_ld_large_toc" = xyes; then
6767 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
6768 [Define if your PowerPC64 linker supports a large TOC.])
6771 AC_CACHE_CHECK(linker toc pointer alignment,
6772 gcc_cv_ld_toc_align,
6773 [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then
6774 cat > conftest.s <<EOF
6779 .section .data.rel.ro,"aw",@progbits
6784 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
6785 && $gcc_cv_ld $emul_name -z norelro -o conftest conftest.o > /dev/null 2>&1; then
6786 gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'`
6788 rm -f conftest conftest.o conftest.s
6791 if test -n "$gcc_cv_ld_toc_align" && test $gcc_cv_ld_toc_align -gt 8; then
6792 AC_DEFINE_UNQUOTED(POWERPC64_TOC_POINTER_ALIGNMENT, $gcc_cv_ld_toc_align,
6793 [Define to .TOC. alignment forced by your linker.])
6800 AC_CACHE_CHECK(linker large toc support,
6801 gcc_cv_ld_large_toc,
6802 [gcc_cv_ld_large_toc=no
6803 if test x$gcc_cv_as != x ; then
6804 cat > conftest.s <<EOF
6814 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
6815 gcc_cv_ld_large_toc=yes
6817 rm -f conftest conftest.o conftest.s
6820 if test x"$gcc_cv_ld_large_toc" = xyes; then
6821 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
6822 [Define if your PowerPC64 linker supports a large TOC.])
6827 AC_CACHE_CHECK(linker --build-id support,
6829 [gcc_cv_ld_buildid=no
6830 if test $in_tree_ld = yes ; then
6831 if test "$gcc_cv_gld_major_version" -eq 2 -a \
6832 "$gcc_cv_gld_minor_version" -ge 18 -o \
6833 "$gcc_cv_gld_major_version" -gt 2 \
6834 && test $in_tree_ld_is_elf = yes; then
6835 gcc_cv_ld_buildid=yes
6837 elif test x$gcc_cv_ld != x; then
6838 if $gcc_cv_ld --help 2>&1 | grep build-id > /dev/null; then
6839 gcc_cv_ld_buildid=yes
6842 if test x"$gcc_cv_ld_buildid" = xyes; then
6843 AC_DEFINE(HAVE_LD_BUILDID, 1,
6844 [Define if your linker supports --build-id.])
6847 AC_ARG_ENABLE(linker-build-id,
6848 [AS_HELP_STRING([--enable-linker-build-id],
6849 [compiler will always pass --build-id to linker])],
6851 enable_linker_build_id=no)
6853 if test x"$enable_linker_build_id" = xyes; then
6854 if test x"$gcc_cv_ld_buildid" = xyes; then
6855 AC_DEFINE(ENABLE_LD_BUILDID, 1,
6856 [Define if gcc should always pass --build-id to linker.])
6858 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
6862 # In binutils 2.21, GNU ld gained support for new emulations fully
6863 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
6864 AC_CACHE_CHECK(linker *_sol2 emulation support,
6865 gcc_cv_ld_sol2_emulation,
6866 [gcc_cv_ld_sol2_emulation=no
6867 if test $in_tree_ld = yes ; then
6868 if test "$gcc_cv_gld_major_version" -eq 2 -a \
6869 "$gcc_cv_gld_minor_version" -ge 21 -o \
6870 "$gcc_cv_gld_major_version" -gt 2 \
6871 && test $in_tree_ld_is_elf = yes; then
6872 gcc_cv_ld_sol2_emulation=yes
6874 elif test x$gcc_cv_ld != x; then
6875 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
6876 grep _sol2 > /dev/null; then
6877 gcc_cv_ld_sol2_emulation=yes
6880 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
6881 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
6882 [Define if your linker supports the *_sol2 emulations.])
6885 AC_CACHE_CHECK(linker --sysroot support,
6887 [gcc_cv_ld_sysroot=no
6888 if test $in_tree_ld = yes ; then
6889 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
6890 gcc_cv_ld_sysroot=yes
6892 elif test x$gcc_cv_ld != x; then
6893 if $gcc_cv_ld --help 2>&1 | grep sysroot > /dev/null; then
6894 gcc_cv_ld_sysroot=yes
6897 if test x"$gcc_cv_ld_sysroot" = xyes; then
6898 AC_DEFINE(HAVE_LD_SYSROOT, 1,
6899 [Define if your linker supports --sysroot.])
6904 # Check for system-provided CRTs on Solaris 11.x and Solaris 12.
6905 AC_CACHE_CHECK([system-provided CRTs on Solaris],
6906 gcc_cv_solaris_crts,
6907 [gcc_cv_solaris_crts=no
6908 if test x$host != x$target; then
6909 if test "x$with_sysroot" = xyes; then
6910 target_sysroot="${test_exec_prefix}/${target_noncanonical}/sys-root"
6912 target_sysroot="${with_sysroot}"
6915 target_libdir="$target_sysroot/usr/lib"
6916 # At the time they were added, gcrt1.o became a symlink for backwards
6917 # compatibility on x86, while crt1.o was added on sparc, so check for that.
6919 i?86-*-solaris2* | x86_64-*-solaris2*)
6920 if test -h "$target_libdir/gcrt1.o"; then gcc_cv_solaris_crts=yes; fi
6923 if test -f "$target_libdir/crt1.o"; then gcc_cv_solaris_crts=yes; fi
6928 if test x$gcc_cv_solaris_crts = xyes; then
6929 AC_DEFINE(HAVE_SOLARIS_CRTS, 1,
6930 [Define if the system-provided CRTs are present on Solaris.])
6933 AC_ARG_ENABLE(libssp,
6934 [AS_HELP_STRING([--enable-libssp], [enable linking against libssp])],
6935 [case "${enableval}" in
6939 AC_MSG_ERROR([unknown libssp setting $enableval])
6943 # Test for stack protector support in target C library.
6944 AC_CACHE_CHECK(__stack_chk_fail in target C library,
6945 gcc_cv_libc_provides_ssp,
6946 [gcc_cv_libc_provides_ssp=no
6947 if test "x$enable_libssp" = "xno"; then
6948 gcc_cv_libc_provides_ssp=yes
6949 elif test "x$enable_libssp" = "xyes"; then
6950 gcc_cv_libc_provides_ssp=no
6954 # All versions of musl provide stack protector
6955 gcc_cv_libc_provides_ssp=yes;;
6956 *-*-linux* | *-*-kfreebsd*-gnu)
6957 # glibc 2.4 and later provides __stack_chk_fail and
6958 # either __stack_chk_guard, or TLS access to stack guard canary.
6959 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
6960 [if test -f $target_header_dir/features.h \
6961 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
6962 $target_header_dir/features.h > /dev/null; then
6963 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
6964 $target_header_dir/features.h > /dev/null && \
6965 test -f $target_header_dir/bits/uClibc_config.h && \
6966 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
6967 $target_header_dir/bits/uClibc_config.h > /dev/null; then
6968 gcc_cv_libc_provides_ssp=yes
6970 # all versions of Bionic support stack protector
6971 elif test -f $target_header_dir/sys/cdefs.h \
6972 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
6973 $target_header_dir/sys/cdefs.h > /dev/null; then
6974 gcc_cv_libc_provides_ssp=yes
6978 # Avoid complicated tests (see
6979 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
6980 # simply assert that glibc does provide this, which is true for all
6981 # realistically usable GNU/Hurd configurations.
6982 # All supported versions of musl provide it as well
6983 gcc_cv_libc_provides_ssp=yes;;
6984 *-*-darwin* | *-*-freebsd* | *-*-netbsd*)
6985 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
6986 [echo "no __stack_chk_fail on this target"])
6988 *) gcc_cv_libc_provides_ssp=no ;;
6992 if test x$gcc_cv_libc_provides_ssp = xyes; then
6993 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
6994 [Define if your target C library provides stack protector support])
6997 # Check whether --enable-default-ssp was given.
6998 AC_ARG_ENABLE(default-ssp,
6999 [AS_HELP_STRING([--enable-default-ssp],
7000 [enable Stack Smashing Protection as default])],[
7001 if test x$gcc_cv_libc_provides_ssp = xyes; then
7003 ia64*-*-*) enable_default_ssp=no ;;
7004 *) enable_default_ssp=$enableval ;;
7007 enable_default_ssp=no
7009 enable_default_ssp=no)
7010 if test x$enable_default_ssp = xyes ; then
7011 AC_DEFINE(ENABLE_DEFAULT_SSP, 1,
7012 [Define if your target supports default stack protector and it is enabled.])
7014 AC_SUBST([enable_default_ssp])
7016 # Test for <sys/sdt.h> on the target.
7017 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
7018 AC_CACHE_CHECK([sys/sdt.h in the target C library], [gcc_cv_sys_sdt_h], [
7020 if test -f $target_header_dir/sys/sdt.h; then
7021 gcc_cv_sys_sdt_h=yes
7024 AS_IF([test x$gcc_cv_sys_sdt_h = xyes], [
7025 AC_DEFINE([HAVE_SYS_SDT_H], [1],
7026 [Define if your target C library provides sys/sdt.h])
7029 # Check if TFmode long double should be used by default or not.
7030 # Some glibc targets used DFmode long double, but with glibc 2.4
7031 # and later they can use TFmode.
7033 powerpc*-*-linux* | \
7037 AC_ARG_WITH(long-double-128,
7038 [AS_HELP_STRING([--with-long-double-128],
7039 [use 128-bit long double by default])],
7040 gcc_cv_target_ldbl128="$with_long_double_128", [
7042 s390*-*-linux-musl*)
7043 gcc_cv_target_ldbl128=yes
7045 powerpc*-*-linux-musl*)
7046 gcc_cv_target_ldbl128=no
7049 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
7050 [gcc_cv_target_ldbl128=no
7051 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
7052 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
7053 && gcc_cv_target_ldbl128=yes
7061 if test x$gcc_cv_target_ldbl128 = xyes; then
7062 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
7063 [Define if TFmode long double should be the default])
7066 # Check if TFmode long double target should use the IBM extended double or IEEE
7067 # 128-bit floating point formats if long doubles are 128-bits long. The long
7068 # double type can only be switched on powerpc64 bit Linux systems where VSX is
7069 # supported. Other PowerPC systems do not build the IEEE 128-bit emulator in
7071 AC_ARG_WITH([long-double-format],
7072 [AS_HELP_STRING([--with-long-double-format={ieee,ibm}]
7073 [Specify whether PowerPC long double uses IEEE or IBM format])],[
7074 case "$target:$with_long_double_format" in
7075 powerpc64le-*-linux*:ieee | powerpc64le-*-linux*:ibm)
7078 powerpc64-*-linux*:ieee | powerpc64-*-linux*:ibm)
7079 # IEEE 128-bit emulation is only built on 64-bit VSX Linux systems
7081 power7 | power8 | power9 | power1*)
7085 AC_MSG_ERROR([Configuration option --with-long-double-format is only \
7086 supported if the default cpu is power7 or newer])
7087 with_long_double_format=""
7091 powerpc64*-*-linux*:*)
7092 AC_MSG_ERROR([--with-long-double-format argument should be ibm or ieee])
7093 with_long_double_format=""
7096 AC_MSG_ERROR([Configure option --with-long-double-format is only supported \
7097 on 64-bit PowerPC VSX Linux systems])
7098 with_long_double_format=""
7103 # Check if the target LIBC supports exporting the AT_PLATFORM and AT_HWCAP
7104 # values in the TCB. Currently, only GLIBC 2.23 and later support this.
7105 gcc_cv_libc_provides_hwcap_in_tcb=no
7108 GCC_GLIBC_VERSION_GTE_IFELSE([2], [23], [gcc_cv_libc_provides_hwcap_in_tcb=yes], )
7111 if test x$gcc_cv_libc_provides_hwcap_in_tcb = xyes; then
7112 AC_DEFINE(TARGET_LIBC_PROVIDES_HWCAP_IN_TCB, 1,
7113 [Define if your target C Library provides the AT_HWCAP value in the TCB])
7116 # Check if the target LIBC handles PT_GNU_STACK.
7117 gcc_cv_libc_gnustack=unknown
7119 mips*-*-linux-musl*)
7120 gcc_cv_libc_gnustack=yes
7123 GCC_GLIBC_VERSION_GTE_IFELSE([2], [31], [gcc_cv_libc_gnustack=yes], )
7126 if test x$gcc_cv_libc_gnustack = xyes; then
7127 AC_DEFINE(TARGET_LIBC_GNUSTACK, 1,
7128 [Define if your target C Library properly handles PT_GNU_STACK])
7131 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
7132 gcc_cv_target_dl_iterate_phdr=unknown
7135 gcc_cv_target_dl_iterate_phdr=yes
7137 *-*-dragonfly* | *-*-freebsd*)
7138 if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then
7139 gcc_cv_target_dl_iterate_phdr=yes
7141 gcc_cv_target_dl_iterate_phdr=no
7145 gcc_cv_target_dl_iterate_phdr=yes
7148 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
7149 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
7150 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
7151 [Define if your target C library provides the `dl_iterate_phdr' function.])
7153 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
7155 # We no longer support different GC mechanisms. Emit an error if
7156 # the user configures with --with-gc.
7158 [AS_HELP_STRING([--with-gc={page,zone}],
7159 [this option is not supported anymore. It used to choose
7160 the garbage collection mechanism to use with the compiler])],
7161 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
7164 # Libraries to use on the host. This will normally be set by the top
7165 # level Makefile. Here we simply capture the value for our Makefile.
7166 if test -z "${HOST_LIBS+set}"; then
7171 # Use the system's zlib library.
7174 dnl Very limited version of automake's enable-maintainer-mode
7176 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
7177 dnl maintainer-mode is disabled by default
7178 AC_ARG_ENABLE(maintainer-mode,
7179 [AS_HELP_STRING([--enable-maintainer-mode],
7180 [enable make rules and dependencies not useful
7181 (and sometimes confusing) to the casual installer])],
7182 maintainer_mode=$enableval,
7185 AC_MSG_RESULT($maintainer_mode)
7187 if test "$maintainer_mode" = "yes"; then
7194 dnl Variables for tags utilities; copied from automake 1.16.4+'s init.m4
7195 if test -z "$CTAGS"; then
7199 if test -z "$ETAGS"; then
7203 if test -z "$CSCOPE"; then
7208 dnl Whether to prevent multiple front-ends from linking at the same time
7210 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
7211 AC_ARG_ENABLE(link-mutex,
7212 [AS_HELP_STRING([--enable-link-mutex],
7213 [avoid linking multiple front-ends at once to avoid thrashing
7214 on the build machine])],
7215 do_link_mutex=$enableval,
7217 AC_MSG_RESULT($do_link_mutex)
7219 if test "$do_link_mutex" = "yes"; then
7221 AC_MSG_WARN([--enable-link-mutex is deprecated and will be removed in the next release, use --enable-link-serialization instead])
7225 AC_SUBST(DO_LINK_MUTEX)
7227 dnl Whether to prevent multiple GCC front-ends from linking at the same time
7229 AC_MSG_CHECKING([whether to serialize linking of multiple front-ends])
7230 AC_ARG_ENABLE(link-serialization,
7231 [AS_HELP_STRING([--enable-link-serialization],
7232 [avoid linking multiple GCC front-ends at once using make
7233 dependencies to avoid thrashing on the build machine])],
7234 do_link_serialization=$enableval,
7235 do_link_serialization=no)
7236 AC_MSG_RESULT($do_link_serialization)
7238 case "$do_link_serialization" in
7240 DO_LINK_SERIALIZATION=1;;
7241 [[1-9]] | [[1-9]][[0-9]] | [[1-9]][[0-9]][[0-9]])
7242 DO_LINK_SERIALIZATION=$do_link_serialization;;
7244 DO_LINK_SERIALIZATION=;;
7246 AC_MSG_ERROR(bad value ${do_link_serialization} given for --enable-link-serialization) ;;
7248 AC_SUBST(DO_LINK_SERIALIZATION)
7254 # Make empty files to contain the specs and options for each language.
7255 # Then add #include lines to for a compiler that has specs and/or options.
7261 # These (without "all_") are set in each config-lang.in.
7262 # `language' must be a single word so is spelled singularly.
7265 all_outputs='Makefile'
7266 # List of language configure and makefile fragments.
7267 all_lang_configurefrags=
7269 # Additional files for gengtype
7270 all_gtfiles="$target_gtfiles"
7272 # These are the languages that are set in --enable-languages,
7273 # and are available in the GCC tree.
7274 all_selected_languages=
7276 # Add the language fragments.
7277 # Languages are added via two mechanisms. Some information must be
7278 # recorded in makefile variables, these are defined in config-lang.in.
7279 # We accumulate them and plug them into the main Makefile.
7280 # The other mechanism is a set of hooks for each of the main targets
7281 # like `clean', `install', etc.
7283 language_hooks="Make-hooks"
7285 for lang in ${srcdir}/*/config-lang.in
7288 test "$lang" = "${srcdir}/*/config-lang.in" && continue
7290 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
7291 if test "x$lang_alias" = x
7293 echo "$lang doesn't set \$language." 1>&2
7296 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
7297 subdirs="$subdirs $subdir"
7299 # $gcc_subdir is where the gcc integration files are to be found
7300 # for a language, both for internal compiler purposes (compiler
7301 # sources implementing front-end to GCC tree converters), and for
7302 # build infrastructure purposes (Make-lang.in, etc.)
7304 # This will be <subdir> (relative to $srcdir) if a line like
7305 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
7306 # is found in <langdir>/config-lang.in, and will remain <langdir>
7309 # Except for the language alias (fetched above), the regular
7310 # "config-lang.in" contents are always retrieved from $gcc_subdir,
7311 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
7312 # only this and the language alias.
7314 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
7315 if [ "$gcc_subdir" = "" ]; then
7316 gcc_subdir="$subdir"
7319 case ",$enable_languages," in
7321 all_selected_languages="$all_selected_languages $lang_alias"
7322 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
7323 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
7335 . ${srcdir}/$gcc_subdir/config-lang.in
7336 if test "x$language" = x
7338 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
7343 case ",$enable_languages," in
7346 for i in $subdir_requires; do
7347 test -f "${srcdir}/$i/config-lang.in" && continue
7355 all_lang_configurefrags="$all_lang_configurefrags \$(srcdir)/$gcc_subdir/config-lang.in"
7356 if test "x$language" = xc && test -n "$all_lang_makefrags"; then
7357 # Put c/Make-lang.in fragment first to match serialization languages order.
7358 all_lang_makefrags="\$(srcdir)/$gcc_subdir/Make-lang.in $all_lang_makefrags"
7360 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
7362 if test -f $srcdir/$gcc_subdir/lang.opt; then
7363 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
7364 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
7366 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
7367 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
7369 all_languages="$all_languages $language"
7370 all_compilers="$all_compilers $compilers"
7371 all_outputs="$all_outputs $outputs"
7372 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
7373 case ",$enable_languages," in
7375 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
7377 AC_SUBST(enable_lto)
7384 for language in $all_selected_languages
7386 check_languages="$check_languages check-$language"
7388 if test x$enable_libgdiagnostics = xyes; then
7389 check_languages="$check_languages check-libgdiagnostics check-sarif-replay"
7393 for language in $all_selected_languages
7395 selftest_languages="$selftest_languages selftest-$language"
7398 # We link each language in with a set of hooks, reached indirectly via
7399 # lang.${target}. Only do so for selected languages.
7403 target_list="all.cross start.encap rest.encap tags \
7404 install-common install-man install-info install-dvi install-pdf \
7405 install-html dvi pdf html uninstall info man srcextra srcman srcinfo \
7406 mostlyclean clean distclean maintainer-clean install-plugin"
7408 for t in $target_list
7411 for lang in $all_selected_languages
7415 echo "lang.$t: $x" >> Make-hooks
7418 echo "ifeq (\$(DO_LINK_SERIALIZATION),)" >> Make-hooks
7419 echo "SERIAL_LIST =" >> Make-hooks
7420 echo else >> Make-hooks
7424 serialization_languages=c
7425 for lang in $all_selected_languages
7427 test $lang = c && continue
7428 if test $lang = lto; then
7429 serialization_languages="$serialization_languages lto1 lto2"
7431 serialization_languages="$serialization_languages $lang"
7434 for lang in $serialization_languages
7436 test $lang = c && continue
7437 lang_cnt=`expr $lang_cnt + 1`
7438 lang_list=" $prev$lang_list"
7441 echo "SERIAL_LIST = \$(wordlist \$(DO_LINK_SERIALIZATION),$lang_cnt,$lang_list)" >> Make-hooks
7442 echo endif >> Make-hooks
7443 echo "SERIAL_COUNT = `expr $lang_cnt + 1`" >> Make-hooks
7444 echo "INDEX.c = 0" >> Make-hooks
7446 for lang in $serialization_languages
7448 test $lang = c && continue
7449 echo "$lang.prev = \$(if \$(word $lang_cnt,\$(SERIAL_LIST)),\$(\$(word $lang_cnt,\$(SERIAL_LIST)).serial))" >> Make-hooks
7450 echo "INDEX.$lang = $lang_idx" >> Make-hooks
7451 lang_cnt=`expr $lang_cnt - 1`
7452 lang_idx=`expr $lang_idx + 1`
7456 # Option include files
7459 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
7460 option_includes="option-includes.mk"
7461 AC_SUBST_FILE(option_includes)
7469 echo "dir ." > .gdbinit
7470 echo "dir ${srcdir}" >> .gdbinit
7471 if test x$gdb_needs_out_file_path = xyes
7473 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
7475 if test "x$subdirs" != x; then
7478 echo "dir ${srcdir}/$s" >> .gdbinit
7481 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
7482 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
7484 # Put a breakpoint on __asan_report_error to help with debugging buffer
7487 *-fsanitize=address*)
7488 echo "source ${srcdir}/gdbasan.in" >> .gdbinit
7492 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
7493 AC_SUBST(gcc_tooldir)
7496 # Find a directory in which to install a shared libgcc.
7498 AC_ARG_ENABLE(version-specific-runtime-libs,
7499 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
7500 [specify that runtime libraries should be
7501 installed in a compiler-specific directory])])
7503 # Substitute configuration variables
7506 AC_SUBST(all_compilers)
7507 AC_SUBST(all_gtfiles)
7508 AC_SUBST(all_lang_configurefrags)
7509 AC_SUBST(all_lang_makefrags)
7510 AC_SUBST(all_languages)
7511 AC_SUBST(all_selected_languages)
7512 AC_SUBST(build_exeext)
7513 AC_SUBST(build_install_headers_dir)
7514 AC_SUBST(build_xm_file_list)
7515 AC_SUBST(build_xm_include_list)
7516 AC_SUBST(build_xm_defines)
7517 AC_SUBST(build_file_translate)
7518 AC_SUBST(check_languages)
7519 AC_SUBST(selftest_languages)
7520 AC_SUBST(cpp_install_dir)
7521 AC_SUBST(xmake_file)
7522 AC_SUBST(tmake_file)
7523 AC_SUBST(TM_ENDIAN_CONFIG)
7524 AC_SUBST(TM_MULTILIB_CONFIG)
7525 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
7526 AC_SUBST(extra_gcc_objs)
7527 AC_SUBST(user_headers_inc_next_pre)
7528 AC_SUBST(user_headers_inc_next_post)
7529 AC_SUBST(extra_headers_list)
7530 AC_SUBST(extra_objs)
7531 AC_SUBST(extra_programs)
7532 AC_SUBST(float_h_file)
7533 AC_SUBST(gcc_config_arguments)
7534 AC_SUBST(gcc_gxx_include_dir)
7535 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
7536 AC_SUBST(gcc_gxx_libcxx_include_dir)
7537 AC_SUBST(gcc_gxx_libcxx_include_dir_add_sysroot)
7538 AC_SUBST(host_exeext)
7539 AC_SUBST(host_xm_file_list)
7540 AC_SUBST(host_xm_include_list)
7541 AC_SUBST(host_xm_defines)
7542 AC_SUBST(out_host_hook_obj)
7544 AC_SUBST(lang_opt_files)
7545 AC_SUBST(lang_specs_files)
7546 AC_SUBST(lang_tree_files)
7547 AC_SUBST(local_prefix)
7549 AC_SUBST(objc_boehm_gc)
7551 AC_SUBST(out_object_file)
7552 AC_SUBST(common_out_file)
7553 AC_SUBST(common_out_object_file)
7554 AC_SUBST(tm_file_list)
7555 AC_SUBST(tm_include_list)
7556 AC_SUBST(tm_defines)
7557 AC_SUBST(tm_p_file_list)
7558 AC_SUBST(tm_p_include_list)
7559 AC_SUBST(tm_d_file_list)
7560 AC_SUBST(tm_d_include_list)
7561 AC_SUBST(tm_rust_file_list)
7562 AC_SUBST(tm_rust_include_list)
7563 AC_SUBST(xm_file_list)
7564 AC_SUBST(xm_include_list)
7565 AC_SUBST(xm_defines)
7566 AC_SUBST(use_gcc_stdint)
7567 AC_SUBST(c_target_objs)
7568 AC_SUBST(cxx_target_objs)
7569 AC_SUBST(fortran_target_objs)
7570 AC_SUBST(d_target_objs)
7571 AC_SUBST(rust_target_objs)
7572 AC_SUBST(target_cpu_default)
7574 AC_SUBST_FILE(language_hooks)
7577 if test x${build} = x${host} ; then
7578 if test x${host} = x${target} ; then
7579 echo "Links are now set up to build a native compiler for ${target}." 1>&2
7581 echo "Links are now set up to build a cross-compiler" 1>&2
7582 echo " from ${host} to ${target}." 1>&2
7585 if test x${host} = x${target} ; then
7586 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
7587 echo " for ${target}." 1>&2
7589 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
7590 echo " from ${host} to ${target}." 1>&2
7594 AC_ARG_VAR(GMPLIBS,[How to link GMP])
7595 AC_ARG_VAR(GMPINC,[How to find GMP include files])
7597 AC_ARG_VAR(ISLLIBS,[How to link isl])
7598 AC_ARG_VAR(ISLINC,[How to find isl include files])
7599 if test "x${ISLLIBS}" != "x" ; then
7600 AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.])
7604 AC_SUBST(pluginlibs)
7605 AC_SUBST(enable_plugin)
7606 if test x"$enable_plugin" = x"yes"; then
7607 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
7611 # Enable --enable-host-shared
7612 AC_ARG_ENABLE(host-shared,
7613 [AS_HELP_STRING([--enable-host-shared],
7614 [build host code as shared libraries])])
7615 AC_SUBST(enable_host_shared)
7617 # Enable --enable-host-pie
7618 AC_ARG_ENABLE(host-pie,
7619 [AS_HELP_STRING([--enable-host-pie],
7620 [build host code as PIE])])
7621 AC_SUBST(enable_host_pie)
7623 AC_ARG_ENABLE(libgdiagnostics,
7624 [AS_HELP_STRING([--enable-libgdiagnostics],
7625 [build libgdiagnostics shared library])])
7626 AC_SUBST(enable_libgdiagnostics)
7628 if test "$enable_libgdiagnostics" = "yes"; then
7629 LIBGDIAGNOSTICS='libgdiagnostics sarif-replay'
7633 AC_SUBST(LIBGDIAGNOSTICS)
7636 # Enable --enable-host-bind-now
7637 AC_ARG_ENABLE(host-bind-now,
7638 [AS_HELP_STRING([--enable-host-bind-now],
7639 [link host code as BIND_NOW])])
7640 AC_SUBST(enable_host_bind_now)
7642 AC_ARG_ENABLE(libquadmath-support,
7643 [AS_HELP_STRING([--disable-libquadmath-support],
7644 [disable libquadmath support for Fortran])],
7645 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
7646 ENABLE_LIBQUADMATH_SUPPORT=yes)
7647 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
7648 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
7649 [Define to 1 to enable libquadmath support])
7653 # Specify what hash style to use by default.
7654 AC_ARG_WITH([linker-hash-style],
7655 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
7656 [specify the linker hash style])],
7657 [case x"$withval" in
7659 LINKER_HASH_STYLE=sysv
7662 LINKER_HASH_STYLE=gnu
7665 LINKER_HASH_STYLE=both
7668 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
7671 [LINKER_HASH_STYLE=''])
7672 if test x"${LINKER_HASH_STYLE}" != x; then
7673 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
7674 [The linker hash style])
7677 # Specify what should be the default of -fdiagnostics-color option.
7678 AC_ARG_WITH([diagnostics-color],
7679 [AC_HELP_STRING([--with-diagnostics-color={never,auto,auto-if-env,always}],
7680 [specify the default of -fdiagnostics-color option
7681 auto-if-env stands for -fdiagnostics-color=auto if
7682 GCC_COLOR environment variable is present and
7683 -fdiagnostics-color=never otherwise])],
7684 [case x"$withval" in
7686 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_NO
7689 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO
7692 DIAGNOSTICS_COLOR_DEFAULT=-1
7695 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_YES
7698 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-color])
7701 [DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO])
7702 AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT,
7703 [The default for -fdiagnostics-color option])
7705 # Specify what should be the default of -fdiagnostics-urls option.
7706 AC_ARG_WITH([diagnostics-urls],
7707 [AC_HELP_STRING([--with-diagnostics-urls={never,auto,auto-if-env,always}],
7708 [specify the default of -fdiagnostics-urls option
7709 auto-if-env stands for -fdiagnostics-urls=auto if
7710 GCC_URLS or TERM_URLS environment variable is present and
7711 -fdiagnostics-urls=never otherwise])],
7712 [case x"$withval" in
7714 DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_NO
7717 DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_AUTO
7720 DIAGNOSTICS_URLS_DEFAULT=-1
7723 DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_YES
7726 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-urls])
7729 [DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_AUTO])
7730 AC_DEFINE_UNQUOTED(DIAGNOSTICS_URLS_DEFAULT, $DIAGNOSTICS_URLS_DEFAULT,
7731 [The default for -fdiagnostics-urls option])
7733 # Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit
7734 # of jit/jit-playback.cc.
7735 gcc_driver_version=`eval "${get_gcc_base_ver} $srcdir/BASE-VER"`
7736 echo "gcc_driver_version: ${gcc_driver_version}"
7737 cat > gcc-driver-name.h <<EOF
7738 #define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_driver_version}${exeext}"
7741 # Check whether --enable-default-pie was given.
7742 AC_ARG_ENABLE(default-pie,
7743 [AS_HELP_STRING([--enable-default-pie],
7744 [enable Position Independent Executable as default])],
7745 enable_default_pie=$enableval,
7746 enable_default_pie=no)
7747 if test x$enable_default_pie = xyes ; then
7748 AC_DEFINE(ENABLE_DEFAULT_PIE, 1,
7749 [Define if your target supports default PIE and it is enabled.])
7751 AC_SUBST([enable_default_pie])
7753 # Check if -fno-PIE works.
7754 AC_CACHE_CHECK([for -fno-PIE option],
7756 [saved_CXXFLAGS="$CXXFLAGS"
7757 CXXFLAGS="$CXXFLAGS -fno-PIE"
7758 AC_COMPILE_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
7759 [gcc_cv_c_no_fpie=yes],
7760 [gcc_cv_c_no_fpie=no])
7761 CXXFLAGS="$saved_CXXFLAGS"])
7763 # Check if -no-pie works.
7764 AC_CACHE_CHECK([for -no-pie option],
7766 [saved_LDFLAGS="$LDFLAGS"
7767 LDFLAGS="$LDFLAGS -no-pie"
7768 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
7769 [gcc_cv_no_pie=yes],
7771 LDFLAGS="$saved_LDFLAGS"])
7773 if test x$enable_host_shared = xyes; then
7775 elif test x$enable_host_pie = xyes; then
7777 elif test x$gcc_cv_c_no_fpie = xyes; then
7785 if test x$enable_host_pie = xyes; then
7787 elif test x$gcc_cv_no_pie = xyes; then
7793 if test x$enable_host_bind_now = xyes; then
7794 LD_PICFLAG="$LD_PICFLAG -Wl,-z,now"
7797 AC_SUBST([LD_PICFLAG])
7799 # Enable Intel CET on Intel CET enabled host if jit is enabled.
7800 GCC_CET_HOST_FLAGS(CET_HOST_FLAGS)
7801 case x$enable_languages in
7808 AC_SUBST(CET_HOST_FLAGS)
7810 # Check linker supports '-z bndplt'
7811 ld_bndplt_support=no
7812 AC_MSG_CHECKING(linker -z bndplt option)
7813 if test x"$ld_is_gold" = xno; then
7814 if test $in_tree_ld = yes ; then
7815 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
7816 ld_bndplt_support=yes
7818 elif test x$gcc_cv_ld != x; then
7819 # Check if linker supports -z bndplt option
7820 if $gcc_cv_ld --help 2>&1 | grep -- '-z bndplt' > /dev/null; then
7821 ld_bndplt_support=yes
7825 if test x"$ld_bndplt_support" = xyes; then
7826 AC_DEFINE(HAVE_LD_BNDPLT_SUPPORT, 1,
7827 [Define if your linker supports -z bndplt])
7829 AC_MSG_RESULT($ld_bndplt_support)
7831 # Check linker supports '--push-state'/'--pop-state'
7832 ld_pushpopstate_support=no
7833 AC_MSG_CHECKING(linker --push-state/--pop-state options)
7834 if test x"$ld_is_gold" = xno; then
7835 if test $in_tree_ld = yes ; then
7836 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
7837 ld_pushpopstate_support=yes
7839 elif test x$gcc_cv_ld != x; then
7840 # Check if linker supports --push-state/--pop-state options
7841 if $gcc_cv_ld --help 2>&1 | grep -- '--push-state' > /dev/null; then
7842 ld_pushpopstate_support=yes
7846 if test x"$ld_pushpopstate_support" = xyes; then
7847 AC_DEFINE(HAVE_LD_PUSHPOPSTATE_SUPPORT, 1,
7848 [Define if your linker supports --push-state/--pop-state])
7850 AC_MSG_RESULT($ld_pushpopstate_support)
7852 # On s390, float_t has historically been statically defined as double for no
7853 # good reason. To comply with the C standard in the light of this definition,
7854 # gcc has evaluated float expressions in double precision when in
7855 # standards-compatible mode or when given -fexcess-precision=standard. To enable
7856 # a smooth transition towards the new model used by most architectures, where
7857 # gcc describes its behavior via the macro __FLT_EVAL_METHOD__ and glibc derives
7858 # float_t from that, this behavior can be configured with
7859 # --enable-s390-excess-float-precision. When given as enabled, that flag selects
7860 # the old model. When omitted, native builds and cross compiles that have target
7861 # libc headers will detect whether libc clamps float_t to double and in that
7862 # case maintain the old model. Otherwise, they will default to the new model.
7863 AC_ARG_ENABLE(s390-excess-float-precision,
7864 [AS_HELP_STRING([--enable-s390-excess-float-precision],
7865 [on s390 targets, evaluate float with double precision
7866 when in standards-conforming mode])],
7867 [],[enable_s390_excess_float_precision=auto])
7871 if test x"$enable_s390_excess_float_precision" = xauto; then
7872 # Can we autodetect the behavior of the target libc?
7873 if test "$target" = "$host" -a "$host" = "$build"; then
7874 enable_s390_excess_float_precision=autodetect
7875 elif test "x$with_headers" != xno; then
7876 # cross build. are target headers available?
7877 # carefully coerce the build-system compiler to use target headers
7878 saved_CXXFLAGS="$CXXFLAGS"
7879 fixed_XGCC_FLAGS_FOR_TARGET=`echo "$XGCC_FLAGS_FOR_TARGET" | sed 's/-B/-idirafter/g'`
7880 CROSS_TEST_CXXFLAGS="-nostdinc $fixed_XGCC_FLAGS_FOR_TARGET"
7881 CXXFLAGS="$CROSS_TEST_CXXFLAGS"
7882 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
7884 ]])], [enable_s390_excess_float_precision=autodetect], [])
7885 CXXFLAGS="$saved_CXXFLAGS"
7888 if test x"$enable_s390_excess_float_precision" = xautodetect; then
7889 saved_CXXFLAGS="$CXXFLAGS"
7890 if ! test "$target" = "$host" -a "$host" = "$build"; then
7891 CXXFLAGS="$CROSS_TEST_CXXFLAGS"
7892 unset CROSS_TEST_CXXFLAGS
7894 AC_CACHE_CHECK([for glibc clamping float_t to double],
7895 gcc_cv_float_t_clamped_to_double, [
7896 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
7897 #define __FLT_EVAL_METHOD__ 0
7899 int dummy[sizeof(float_t) == sizeof(double) ? 1 : -1];
7901 [gcc_cv_float_t_clamped_to_double=yes],
7902 [gcc_cv_float_t_clamped_to_double=no])])
7903 CXXFLAGS="$saved_CXXFLAGS"
7904 enable_s390_excess_float_precision="$gcc_cv_float_t_clamped_to_double"
7906 # no way to detect behavior of target libc, default to new model
7907 enable_s390_excess_float_precision=no
7911 GCC_TARGET_TEMPLATE(ENABLE_S390_EXCESS_FLOAT_PRECISION)
7912 if test x"$enable_s390_excess_float_precision" = xyes; then
7913 AC_DEFINE(ENABLE_S390_EXCESS_FLOAT_PRECISION, 1,
7914 [Define to enable evaluating float expressions with double precision in
7915 standards-compatible mode on s390 targets.])
7920 # Check if the linker supports '-z now'
7922 AC_MSG_CHECKING(linker -z now option)
7923 if test x"$ld_is_gold" = xyes; then
7925 elif test $in_tree_ld = yes ; then
7926 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then
7929 elif test x$gcc_cv_ld != x; then
7930 # Check if linker supports -z now
7931 if $gcc_cv_ld --help 2>&1 | grep -- '-z now' > /dev/null; then
7935 AC_DEFINE_UNQUOTED(HAVE_LD_NOW_SUPPORT,
7936 [`if test x"$ld_now_support" = xyes; then echo 1; else echo 0; fi`],
7937 [Define 0/1 if your linker supports -z now])
7938 AC_MSG_RESULT($ld_now_support)
7940 # Check if the linker supports '-z relro'
7942 AC_MSG_CHECKING(linker -z relro option)
7943 if test x"$ld_is_gold" = xyes; then
7944 ld_relro_support=yes
7945 elif test $in_tree_ld = yes ; then
7946 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2; then
7947 ld_relro_support=yes
7949 elif test x$gcc_cv_ld != x; then
7950 # Check if linker supports -z relro
7951 if $gcc_cv_ld --help 2>&1 | grep -- '-z relro' > /dev/null; then
7952 ld_relro_support=yes
7955 AC_DEFINE_UNQUOTED(HAVE_LD_RELRO_SUPPORT,
7956 [`if test x"$ld_relro_support" = xyes; then echo 1; else echo 0; fi`],
7957 [Define 0/1 if your linker supports -z relro])
7958 AC_MSG_RESULT($ld_relro_support)
7962 # -fhardened is only supported on GNU/Linux.
7963 fhardened_support=yes
7966 fhardened_support=no
7970 AC_DEFINE_UNQUOTED(HAVE_FHARDENED_SUPPORT,
7971 [`if test x"$fhardened_support" = xyes; then echo 1; else echo 0; fi`],
7972 [Define 0/1 if -fhardened is supported])
7973 AC_MSG_RESULT($fhardened_support)
7975 # Configure the subdirectories
7976 # AC_CONFIG_SUBDIRS($subdirs)
7978 # Create the Makefile
7979 # and configure language subdirectories
7980 AC_CONFIG_FILES($all_outputs)
7982 AC_CONFIG_COMMANDS([default],
7984 case ${CONFIG_HEADERS} in
7985 *auto-host.h:config.in*)
7988 # Make sure all the subdirs exist.
7989 for d in $subdirs doc build common c-family
7991 test -d $d || mkdir $d
7994 [subdirs='$subdirs'])