2 # Process this file with autoconf to generate a configuration script.
4 # Copyright (C) 1997-2023 Free Software Foundation, Inc.
6 #This file is part of GCC.
8 #GCC is free software; you can redistribute it and/or modify it under
9 #the terms of the GNU General Public License as published by the Free
10 #Software Foundation; either version 3, or (at your option) any later
13 #GCC is distributed in the hope that it will be useful, but WITHOUT
14 #ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 #FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
18 #You should have received a copy of the GNU General Public License
19 #along with GCC; see the file COPYING3. If not see
20 #<http://www.gnu.org/licenses/>.
22 # --------------------------------
23 # Initialization and sanity checks
24 # --------------------------------
27 AC_CONFIG_SRCDIR(tree.cc)
28 AC_CONFIG_MACRO_DIRS([../config] [..])
29 AC_CONFIG_HEADER(auto-host.h:config.in)
31 gcc_version=`cat $srcdir/BASE-VER`
33 # Determine the host, build, and target systems
38 # Determine the noncanonical host name, for Ada.
41 # Determine the noncanonical target name, for directory use.
42 ACX_NONCANONICAL_TARGET
44 # Used for constructing correct paths for offload compilers.
45 real_target_noncanonical=${target_noncanonical}
48 # Determine the target- and build-specific subdirectories
51 # Set program_transform_name
54 # Check for bogus environment variables.
55 # Test if LIBRARY_PATH contains the notation for the current directory
56 # since this would lead to problems installing/building glibc.
57 # LIBRARY_PATH contains the current directory if one of the following
59 # - one of the terminals (":" and ";") is the first or last sign
60 # - two terminals occur directly after each other
61 # - the path contains an element with a dot in it
62 AC_MSG_CHECKING(LIBRARY_PATH variable)
64 case ${LIBRARY_PATH} in
65 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
66 library_path_setting="contains current directory"
69 library_path_setting="ok"
73 AC_MSG_RESULT($library_path_setting)
74 if test "$library_path_setting" != "ok"; then
76 *** LIBRARY_PATH shouldn't contain the current directory when
77 *** building gcc. Please change the environment variable
78 *** and run configure again.])
81 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
82 # since this would lead to problems installing/building glibc.
83 # GCC_EXEC_PREFIX contains the current directory if one of the following
85 # - one of the terminals (":" and ";") is the first or last sign
86 # - two terminals occur directly after each other
87 # - the path contains an element with a dot in it
88 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
90 case ${GCC_EXEC_PREFIX} in
91 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
92 gcc_exec_prefix_setting="contains current directory"
95 gcc_exec_prefix_setting="ok"
99 AC_MSG_RESULT($gcc_exec_prefix_setting)
100 if test "$gcc_exec_prefix_setting" != "ok"; then
102 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
103 *** building gcc. Please change the environment variable
104 *** and run configure again.])
111 # Specify the local prefix
113 AC_ARG_WITH(local-prefix,
114 [AS_HELP_STRING([--with-local-prefix=DIR],
115 [specifies directory to put local include])],
116 [case "${withval}" in
117 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
119 *) local_prefix=$with_local_prefix ;;
122 # Default local prefix if it is empty
123 if test x$local_prefix = x; then
124 local_prefix=/usr/local
127 AC_ARG_WITH([native-system-header-dir],
128 [ --with-native-system-header-dir=dir
129 use dir as the directory to look for standard
130 system header files in. Defaults to /usr/include.],
132 case ${with_native_system_header_dir} in
133 yes|no) AC_MSG_ERROR([bad value ${withval} given for --with-native-system-header-dir]) ;;
134 /* | [[A-Za-z]]:[[\\/]]*) ;;
135 *) AC_MSG_ERROR([--with-native-system-header-dir argument ${withval} must be an absolute directory]) ;;
137 configured_native_system_header_dir="${withval}"
138 ], [configured_native_system_header_dir=])
140 AC_ARG_WITH(build-sysroot,
141 [AS_HELP_STRING([--with-build-sysroot=sysroot],
142 [use sysroot as the system root during the build])],
143 [if test x"$withval" != x ; then
144 SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
146 [SYSROOT_CFLAGS_FOR_TARGET=])
147 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
149 if test "x$prefix" = xNONE; then
150 test_prefix=/usr/local
154 if test "x$exec_prefix" = xNONE; then
155 test_exec_prefix=$test_prefix
157 test_exec_prefix=$exec_prefix
161 [AS_HELP_STRING([[--with-sysroot[=DIR]]],
162 [search for usr/lib, usr/include, et al, within DIR])],
164 case ${with_sysroot} in
166 */) with_sysroot=`echo $with_sysroot | sed 's,/$,,'` ;;
168 case ${with_sysroot} in
169 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
170 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
173 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
174 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
176 case ${TARGET_SYSTEM_ROOT} in
177 "${test_prefix}"|"${test_prefix}/"*|\
178 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
179 '${prefix}'|'${prefix}/'*|\
180 '${exec_prefix}'|'${exec_prefix}/'*)
181 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
182 TARGET_SYSTEM_ROOT_DEFINE="$t"
187 TARGET_SYSTEM_ROOT_DEFINE=
188 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
190 AC_SUBST(TARGET_SYSTEM_ROOT)
191 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
192 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
194 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
195 # passed in by the toplevel make and thus we'd get different behavior
196 # depending on where we built the sources.
198 # Specify the g++ header file directory
199 AC_ARG_WITH(gxx-include-dir,
200 [AS_HELP_STRING([--with-gxx-include-dir=DIR],
201 [specifies directory to put g++ header files])],
202 [case "${withval}" in
203 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
205 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
208 # If both --with-sysroot and --with-gxx-include-dir are passed, we interpolate
209 # the former in the latter and, upon success, compute gcc_gxx_include_dir as
210 # relative to the sysroot.
211 gcc_gxx_include_dir_add_sysroot=0
213 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
214 if test x${gcc_gxx_include_dir} = x; then
215 if test x${enable_version_specific_runtime_libs} = xyes; then
216 gcc_gxx_include_dir='${libsubdir}/include/c++'
218 libstdcxx_incdir='include/c++/$(version)'
219 if test x$host != x$target; then
220 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
222 gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir"
224 elif test "${with_sysroot+set}" = set; then
225 gcc_gxx_without_sysroot=`expr "${gcc_gxx_include_dir}" : "${with_sysroot}"'\(.*\)'`
226 if test "${gcc_gxx_without_sysroot}"; then
227 gcc_gxx_include_dir="${gcc_gxx_without_sysroot}"
228 gcc_gxx_include_dir_add_sysroot=1
232 # Configuration for an alternate set of C++ headers.
233 gcc_gxx_libcxx_include_dir=
234 # Specify the alternate g++ header file directory
235 AC_ARG_WITH(gxx-libcxx-include-dir,
236 [AS_HELP_STRING([--with-gxx-libcxx-include-dir=DIR],
237 [specifies directory to find libc++ header files])],
238 [case "${withval}" in
239 yes) AC_MSG_ERROR(bad value ${withval} given for libc++ include directory) ;;
240 *) gcc_gxx_libcxx_include_dir=$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 the -O2: for historical reasons, unless bootstrapping we prefer
467 # optimizations to be activated explicitly by the toplevel.
470 *) CFLAGS=`echo "$CFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" `
471 CXXFLAGS=`echo "$CXXFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" ` ;;
477 # Determine PICFLAG for target gnatlib.
478 GCC_PICFLAG_FOR_TARGET
479 AC_SUBST(PICFLAG_FOR_TARGET)
481 # -------------------------
482 # Check C compiler features
483 # -------------------------
485 AC_USE_SYSTEM_EXTENSIONS
491 AC_CHECK_SIZEOF(ino_t)
492 AC_CHECK_SIZEOF(dev_t)
494 # Select the right stat being able to handle 64bit inodes, if needed.
495 if test "$enable_largefile" != no; then
496 case "$host, $build" in
497 *-*-aix*,*|*,*-*-aix*)
498 if test "$ac_cv_sizeof_ino_t" = "4" -a "$ac_cv_sizeof_dev_t" = 4; then
499 AC_DEFINE(HOST_STAT_FOR_64BIT_INODES, stat64x,
500 [Define which stat syscall is able to handle 64bit indodes.])
506 # sizeof(char) is 1 by definition.
507 AC_CHECK_SIZEOF(void *)
508 AC_CHECK_SIZEOF(short)
510 AC_CHECK_SIZEOF(long)
511 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
513 if test x"$ac_cv_c_uint64_t" = x"no" -o x"$ac_cv_c_int64_t" = x"no"; then
514 AC_MSG_ERROR([uint64_t or int64_t not found])
517 # check what underlying integer type int64_t uses
518 AC_CACHE_CHECK(for int64_t underlying type, ac_cv_int64_t_type, [
519 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
523 template <typename T> struct X { };
525 struct X<long> { typedef long t; };
526 ]], [[X<int64_t>::t x;]])],[ac_cv_int64_t_type=long],[ac_cv_int64_t_type="long long"])])
527 if test "$ac_cv_int64_t_type" = "long"; then
528 AC_DEFINE(INT64_T_IS_LONG, 1,
529 [Define if int64_t uses long as underlying type.])
531 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
535 template <typename T> struct X { };
537 struct X<long long> { typedef long long t; };
538 ]], [[X<int64_t>::t x;]])],[],[AC_MSG_ERROR([error verifying int64_t uses long long])])
541 AC_CACHE_CHECK(for std::swap in <utility>, ac_cv_std_swap_in_utility, [
542 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
544 ]], [[int a, b; std::swap(a,b);]])],[ac_cv_std_swap_in_utility=yes],[ac_cv_std_swap_in_utility=no])])
545 if test $ac_cv_std_swap_in_utility = yes; then
546 AC_DEFINE(HAVE_SWAP_IN_UTILITY, 1,
547 [Define if <utility> defines std::swap.])
550 # Check whether compiler is affected by placement new aliasing bug (PR 29286).
551 # If the host compiler is affected by the bug, and we build with optimization
552 # enabled (which happens e.g. when cross-compiling), the pool allocator may
553 # get miscompiled. Use -fno-strict-aliasing to work around this problem.
554 # Since there is no reliable feature check for the presence of this bug,
555 # we simply use a GCC version number check. (This should never trigger for
556 # stages 2 or 3 of a native bootstrap.)
558 if test "$GCC" = yes; then
559 saved_CXXFLAGS="$CXXFLAGS"
561 # The following test compilation will succeed if and only if $CXX accepts
562 # -fno-strict-aliasing *and* is older than GCC 4.3.
563 CXXFLAGS="$CXXFLAGS -fno-strict-aliasing"
564 AC_MSG_CHECKING([whether $CXX is affected by placement new aliasing bug])
565 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
566 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)
567 #error compiler not affected by placement new aliasing bug
570 [AC_MSG_RESULT([yes]); aliasing_flags='-fno-strict-aliasing'],
571 [AC_MSG_RESULT([no])])
573 CXXFLAGS="$saved_CXXFLAGS"
575 AC_SUBST(aliasing_flags)
579 # ---------------------
580 # Warnings and checking
581 # ---------------------
583 # Check $CC warning features (if it's GCC).
584 # We want to use -pedantic, but we don't want warnings about
588 # * C++11 narrowing conversions in { }
589 # So, we only use -pedantic if we can disable those warnings.
591 # In stage 1, disable -Wformat warnings from old GCCs about new % codes
592 AC_ARG_ENABLE(build-format-warnings,
593 AS_HELP_STRING([--disable-build-format-warnings],[don't use -Wformat while building GCC]),
594 [],[enable_build_format_warnings=yes])
595 AS_IF([test $enable_build_format_warnings = no],
596 [wf_opt=-Wno-format],[wf_opt=])
597 ACX_PROG_CXX_WARNING_OPTS(
598 m4_quote(m4_do([-W -Wall -Wno-narrowing -Wwrite-strings ],
599 [-Wcast-qual $wf_opt])),
601 ACX_PROG_CC_WARNING_OPTS(
602 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes ],
603 [])), [c_loose_warn])
604 ACX_PROG_CXX_WARNING_OPTS(
605 m4_quote(m4_do([-Wmissing-format-attribute ], [-Wconditionally-supported ],
606 [-Woverloaded-virtual])), [strict_warn])
607 ACX_PROG_CC_WARNING_OPTS(
608 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
609 ACX_PROG_CXX_WARNING_ALMOST_PEDANTIC(
610 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
611 [-Wno-overlength-strings])), [strict_warn])
612 ACX_PROG_CXX_WARNINGS_ARE_ERRORS([manual], [strict_warn])
614 # The above macros do nothing if the compiler is not GCC. However, the
615 # Makefile has more goo to add other flags, so these variables are used
616 # to enable warnings only for GCC.
619 if test "x$GCC" = "xyes"; then
620 warn_cflags='$(GCC_WARN_CFLAGS)'
621 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
623 AC_SUBST(warn_cflags)
624 AC_SUBST(warn_cxxflags)
626 # Disable exceptions and RTTI if building with g++
627 ACX_PROG_CC_WARNING_OPTS(
628 m4_quote(m4_do([-fno-exceptions -fno-rtti -fasynchronous-unwind-tables])),
631 # Enable expensive internal checks
633 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
637 AC_ARG_ENABLE(checking,
638 [AS_HELP_STRING([[--enable-checking[=LIST]]],
639 [enable expensive run-time checks. With LIST,
640 enable only specific categories of checks.
641 Categories are: yes,no,all,none,release.
642 Flags are: assert,df,extra,fold,gc,gcac,gimple,misc,
643 rtlflag,rtl,runtime,tree,valgrind,types])],
644 [ac_checking_flags="${enableval}"],[
645 # Determine the default checks.
646 if test x$is_release = x ; then
647 ac_checking_flags=yes,extra
649 ac_checking_flags=release
651 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
652 for check in release $ac_checking_flags
655 # these set all the flags to specific states
656 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
657 ac_fold_checking= ; ac_gc_checking=1 ; ac_extra_checking= ;
658 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
659 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
660 ac_tree_checking=1 ; ac_valgrind_checking= ;
661 ac_types_checking=1 ;;
662 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
663 ac_fold_checking= ; ac_gc_checking= ; ac_extra_checking= ;
664 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
665 ac_rtlflag_checking= ; ac_runtime_checking= ;
666 ac_tree_checking= ; ac_valgrind_checking= ;
667 ac_types_checking= ;;
668 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
669 ac_fold_checking=1 ; ac_gc_checking=1 ; ac_extra_checking=1 ;
670 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
671 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
672 ac_tree_checking=1 ; ac_valgrind_checking= ;
673 ac_types_checking=1 ;;
674 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
675 ac_fold_checking= ; ac_gc_checking= ; ac_extra_checking= ;
676 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
677 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
678 ac_tree_checking= ; ac_valgrind_checking= ;
679 ac_types_checking= ;;
680 # these enable particular checks
681 assert) ac_assert_checking=1 ;;
682 df) ac_df_checking=1 ;;
683 extra) ac_extra_checking=1 ;;
684 fold) ac_fold_checking=1 ;;
685 gc) ac_gc_checking=1 ;;
686 gcac) ac_gc_always_collect=1 ;;
687 gimple) ac_gimple_checking=1 ;;
688 misc) ac_checking=1 ;;
689 rtl) ac_rtl_checking=1 ;;
690 rtlflag) ac_rtlflag_checking=1 ;;
691 runtime) ac_runtime_checking=1 ;;
692 tree) ac_tree_checking=1 ;;
693 types) ac_types_checking=1 ;;
694 valgrind) ac_valgrind_checking=1 ;;
695 *) AC_MSG_ERROR(unknown check category $check) ;;
701 if test x$ac_checking != x ; then
702 AC_DEFINE(CHECKING_P, 1,
703 [Define to 0/1 if you want more run-time sanity checks. This one gets a grab
704 bag of miscellaneous but relatively cheap checks.])
705 nocommon_flag=-fno-common
707 AC_DEFINE(CHECKING_P, 0)
709 AC_SUBST(nocommon_flag)
710 if test x$ac_extra_checking != x ; then
711 AC_DEFINE(ENABLE_EXTRA_CHECKING, 1,
712 [Define to 0/1 if you want extra run-time checking that might affect code
715 AC_DEFINE(ENABLE_EXTRA_CHECKING, 0)
717 if test x$ac_df_checking != x ; then
718 AC_DEFINE(ENABLE_DF_CHECKING, 1,
719 [Define if you want more run-time sanity checks for dataflow.])
721 if test x$ac_assert_checking != x ; then
722 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
723 [Define if you want assertions enabled. This is a cheap check.])
725 if test x$ac_gimple_checking != x ; then
726 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
727 [Define if you want operations on GIMPLE (the basic data structure of
728 the high-level optimizers) to be checked for dynamic type safety at
729 runtime. This is moderately expensive.])
731 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
732 if test x$ac_runtime_checking != x ; then
733 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
734 [Define if you want runtime assertions enabled. This is a cheap check.])
736 if test x$ac_tree_checking != x ; then
737 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
738 [Define if you want all operations on trees (the basic data
739 structure of the front ends) to be checked for dynamic type safety
740 at runtime. This is moderately expensive.
744 if test x$ac_types_checking != x ; then
745 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
746 [Define if you want all gimple types to be verified after gimplifiation.
750 AC_SUBST(TREECHECKING)
751 if test x$ac_rtl_checking != x ; then
752 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
753 [Define if you want all operations on RTL (the basic data structure
754 of the optimizer and back end) to be checked for dynamic type safety
755 at runtime. This is quite expensive.])
757 if test x$ac_rtlflag_checking != x ; then
758 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
759 [Define if you want RTL flag accesses to be checked against the RTL
760 codes that are supported for each access macro. This is relatively
763 if test x$ac_gc_checking != x ; then
764 AC_DEFINE(ENABLE_GC_CHECKING, 1,
765 [Define if you want the garbage collector to do object poisoning and
766 other memory allocation checks. This is quite expensive.])
768 if test x$ac_gc_always_collect != x ; then
769 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
770 [Define if you want the garbage collector to operate in maximally
771 paranoid mode, validating the entire heap and collecting garbage at
772 every opportunity. This is extremely expensive.])
774 if test x$ac_fold_checking != x ; then
775 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
776 [Define if you want fold checked that it never destructs its argument.
777 This is quite expensive.])
779 valgrind_path_defines=
782 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
783 dnl # an if statement. This was the source of very frustrating bugs
784 dnl # in converting to autoconf 2.5x!
785 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
787 # It is certainly possible that there's valgrind but no valgrind.h.
788 # GCC relies on making annotations so we must have both.
789 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
790 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
791 [[#include <valgrind/memcheck.h>
792 #ifndef VALGRIND_DISCARD
793 #error VALGRIND_DISCARD not defined
795 [gcc_cv_header_valgrind_memcheck_h=yes],
796 [gcc_cv_header_valgrind_memcheck_h=no])
797 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
798 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
799 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
800 [[#include <memcheck.h>
801 #ifndef VALGRIND_DISCARD
802 #error VALGRIND_DISCARD not defined
804 [gcc_cv_header_memcheck_h=yes],
805 [gcc_cv_header_memcheck_h=no])
806 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
807 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
808 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
809 [Define if valgrind's valgrind/memcheck.h header is installed.])
811 if test $gcc_cv_header_memcheck_h = yes; then
812 AC_DEFINE(HAVE_MEMCHECK_H, 1,
813 [Define if valgrind's memcheck.h header is installed.])
816 if test x$ac_valgrind_checking != x ; then
817 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
818 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
819 if test "x$valgrind_path" = "x" \
820 || (test $have_valgrind_h = no \
821 && test $gcc_cv_header_memcheck_h = no \
822 && test $gcc_cv_header_valgrind_memcheck_h = no); then
823 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
825 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
826 valgrind_command="$valgrind_path -q"
827 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
828 [Define if you want to run subprograms and generated programs
829 through valgrind (a memory checker). This is extremely expensive.])
831 AC_SUBST(valgrind_path_defines)
832 AC_SUBST(valgrind_command)
834 # Enable code coverage collection
835 AC_ARG_ENABLE(coverage,
836 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
837 [enable compiler's code coverage collection.
838 Use to measure compiler performance and locate
839 unused parts of the compiler. With LEVEL, specify
840 optimization. Values are opt, noopt,
842 [case "${enableval}" in
844 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0 -fkeep-static-functions"
847 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2 -fkeep-static-functions"
850 # a.k.a. --disable-coverage
854 AC_MSG_ERROR(unknown coverage setting $enableval)
858 AC_SUBST(coverage_flags)
860 AC_ARG_ENABLE(gather-detailed-mem-stats,
861 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
862 [enable detailed memory allocation stats gathering])], [],
863 [enable_gather_detailed_mem_stats=no])
864 gather_stats=`if test $enable_gather_detailed_mem_stats != no; then echo 1; else echo 0; fi`
865 AC_DEFINE_UNQUOTED(GATHER_STATISTICS, $gather_stats,
866 [Define to enable detailed memory allocation stats gathering.])
868 AC_ARG_ENABLE(valgrind-annotations,
869 [AS_HELP_STRING([--enable-valgrind-annotations],
870 [enable valgrind runtime interaction])], [],
871 [enable_valgrind_annotations=no])
872 if test x$enable_valgrind_annotations != xno \
873 || test x$ac_valgrind_checking != x; then
874 if (test $have_valgrind_h = no \
875 && test $gcc_cv_header_memcheck_h = no \
876 && test $gcc_cv_header_valgrind_memcheck_h = no); then
877 AC_MSG_ERROR([*** Can't find valgrind/memcheck.h, memcheck.h or valgrind.h])
879 AC_DEFINE(ENABLE_VALGRIND_ANNOTATIONS, 1,
880 [Define to get calls to the valgrind runtime enabled.])
883 # -------------------------------
884 # Miscenalleous configure options
885 # -------------------------------
887 # Determine whether or not multilibs are enabled.
888 AC_ARG_ENABLE(multilib,
889 [AS_HELP_STRING([--enable-multilib],
890 [enable library support for multiple ABIs])],
891 [], [enable_multilib=yes])
892 AC_SUBST(enable_multilib)
894 # Determine whether or not multiarch is enabled.
895 AC_ARG_ENABLE(multiarch,
896 [AS_HELP_STRING([--enable-multiarch],
897 [enable support for multiarch paths])],
898 [case "${enableval}" in
899 yes|no|auto) enable_multiarch=$enableval;;
900 *) AC_MSG_ERROR(bad value ${enableval} given for --enable-multiarch option) ;;
901 esac], [enable_multiarch=auto])
902 if test x${enable_multiarch} = xauto; then
903 if test x${with_native_system_header_dir} != x; then
904 ma_msg_suffix=", disabled auto check (configured with --native-system-header-dir)"
907 if test x$host != x$target && test "x$with_sysroot" = x; then
908 ma_msg_suffix=", disabled auto check (cross build configured without --with-sysroot)"
912 if test x${enable_multiarch} = xyes; then
913 AC_DEFINE(ENABLE_MULTIARCH, 1, [If --with-multiarch option is used])
915 AC_MSG_CHECKING(for multiarch configuration)
916 AC_SUBST(enable_multiarch)
917 AC_MSG_RESULT($enable_multiarch$ma_msg_suffix)
919 # needed for setting the multiarch name for soft-float/hard-float ABIs
923 # default stack clash protection guard size as power of twos in bytes.
924 # Please keep these in sync with params.def.
928 # Keep the default value when the option is not used to 0, this allows us to
929 # distinguish between the cases where the user specifially set a value via
930 # configure and when the normal default value is used.
931 AC_ARG_WITH(stack-clash-protection-guard-size,
932 [AS_HELP_STRING([--with-stack-clash-protection-guard-size=size],
933 [Set the default stack clash protection guard size for specific targets as a power of two in bytes.])],
934 [DEFAULT_STK_CLASH_GUARD_SIZE="$with_stack_clash_protection_guard_size"], [DEFAULT_STK_CLASH_GUARD_SIZE=0])
935 if test $DEFAULT_STK_CLASH_GUARD_SIZE -ne 0 \
936 && (test $DEFAULT_STK_CLASH_GUARD_SIZE -lt $stk_clash_min \
937 || test $DEFAULT_STK_CLASH_GUARD_SIZE -gt $stk_clash_max); then
938 AC_MSG_ERROR(m4_normalize([
939 Invalid value $DEFAULT_STK_CLASH_GUARD_SIZE for --with-stack-clash-protection-guard-size. \
940 Must be between $stk_clash_min and $stk_clash_max.]))
943 AC_DEFINE_UNQUOTED(DEFAULT_STK_CLASH_GUARD_SIZE, $DEFAULT_STK_CLASH_GUARD_SIZE,
944 [Define to larger than zero set the default stack clash protector size.])
946 # Specify the number of splits of match.pd to generate.
947 AC_ARG_WITH(matchpd-partitions,
948 [AS_HELP_STRING([--with-matchpd-partitions=num],
949 [Set the number of partitions to make for gimple and generic when splitting match.pd. [default=10]])],
950 [DEFAULT_MATCHPD_PARTITIONS="$with_matchpd_partitions"], [DEFAULT_MATCHPD_PARTITIONS=10])
951 if (test $DEFAULT_MATCHPD_PARTITIONS -lt 1); then
952 AC_MSG_ERROR(m4_normalize([
953 Invalid value $DEFAULT_MATCHPD_PARTITIONS for --with-matchpd-partitions. \
954 Cannot be negative.]))
957 AC_SUBST(DEFAULT_MATCHPD_PARTITIONS)
959 # Enable __cxa_atexit for C++.
960 AC_ARG_ENABLE(__cxa_atexit,
961 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
964 # Enable C extension for decimal float if target supports it.
965 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
967 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
968 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
969 [Define to 1 to enable decimal float extension to C.])
971 # Use default_decimal_float for dependency.
972 enable_decimal_float=$default_decimal_float
974 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
975 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
976 [Define to 1 to specify that we are using the BID decimal floating
977 point format instead of DPD])
979 # Enable C extension for fixed-point arithmetic.
980 AC_ARG_ENABLE(fixed-point,
981 [AS_HELP_STRING([--enable-fixed-point],
982 [enable fixed-point arithmetic extension to C])],
987 enable_fixed_point=yes
991 enable_fixed_point=yes
994 enable_fixed_point=yes
997 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
998 enable_fixed_point=no
1002 AC_SUBST(enable_fixed_point)
1004 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
1005 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
1006 [Define to 1 to enable fixed-point arithmetic extension to C.])
1009 # Pass with no value to take the default
1010 # Pass with a value to specify a thread package
1011 AC_ARG_ENABLE(threads,
1012 [AS_HELP_STRING([[--enable-threads[=LIB]]],
1013 [enable thread usage for target GCC,
1014 using LIB thread package])],,
1015 [enable_threads=''])
1018 [AS_HELP_STRING([--enable-tls],
1019 [enable or disable generation of tls code
1020 overriding the assembler check for tls support])],
1024 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
1025 Valid choices are 'yes' and 'no'.]) ;;
1029 AC_ARG_ENABLE(vtable-verify,
1030 [AS_HELP_STRING([--enable-vtable-verify],
1031 [enable vtable verification feature])],,
1032 [enable_vtable_verify=no])
1033 vtable_verify=`if test x$enable_vtable_verify = xyes; then echo 1; else echo 0; fi`
1034 AC_DEFINE_UNQUOTED(ENABLE_VTABLE_VERIFY, $vtable_verify,
1035 [Define 0/1 if vtable verification feature is enabled.])
1037 AC_ARG_ENABLE(analyzer,
1038 [AS_HELP_STRING([--disable-analyzer],
1039 [disable -fanalyzer static analyzer])],
1040 if test x$enable_analyzer = xno; then
1046 AC_DEFINE_UNQUOTED(ENABLE_ANALYZER, $analyzer,
1047 [Define 0/1 if static analyzer feature is enabled.])
1049 AC_ARG_ENABLE(objc-gc,
1050 [AS_HELP_STRING([--enable-objc-gc],
1051 [enable the use of Boehm's garbage collector with
1052 the GNU Objective-C runtime])],
1053 if test x$enable_objc_gc = xno; then
1061 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2 (or later)])],
1062 dwarf2="$with_dwarf2",
1065 AC_ARG_ENABLE(shared,
1066 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
1068 case $enable_shared in
1072 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
1073 for pkg in $enableval; do
1074 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
1081 ], [enable_shared=yes])
1082 AC_SUBST(enable_shared)
1085 [ --disable-gcov don't provide libgcov and related host tools],
1086 [], [case $target in
1095 AC_SUBST(enable_gcov)
1098 [AS_HELP_STRING([--with-specs=SPECS],
1099 [add SPECS to driver command-line processing])],
1100 [CONFIGURE_SPECS=$withval],
1103 AC_SUBST(CONFIGURE_SPECS)
1105 ACX_PKGVERSION([GCC])
1106 ACX_BUGURL([https://gcc.gnu.org/bugs/])
1108 # Allow overriding the default URL for documentation
1109 AC_ARG_WITH(documentation-root-url,
1110 AS_HELP_STRING([--with-documentation-root-url=URL],
1111 [Root for documentation URLs]),
1113 yes) AC_MSG_ERROR([documentation root URL not specified]) ;;
1114 no) AC_MSG_ERROR([documentation root URL not specified]) ;;
1115 */) DOCUMENTATION_ROOT_URL="$withval" ;;
1116 *) AC_MSG_ERROR([documentation root URL does not end with /]) ;;
1118 DOCUMENTATION_ROOT_URL="https://gcc.gnu.org/onlinedocs/"
1120 AC_DEFINE_UNQUOTED(DOCUMENTATION_ROOT_URL,"$DOCUMENTATION_ROOT_URL",
1121 [Define to the root for documentation URLs.])
1123 # Allow overriding the default URL for GCC changes
1124 AC_ARG_WITH(changes-root-url,
1125 AS_HELP_STRING([--with-changes-root-url=URL],
1126 [Root for GCC changes URLs]),
1128 yes) AC_MSG_ERROR([changes root URL not specified]) ;;
1129 no) AC_MSG_ERROR([changes root URL not specified]) ;;
1130 */) CHANGES_ROOT_URL="$withval" ;;
1131 *) AC_MSG_ERROR([changes root URL does not end with /]) ;;
1133 CHANGES_ROOT_URL="https://gcc.gnu.org/"
1135 AC_DEFINE_UNQUOTED(CHANGES_ROOT_URL,"$CHANGES_ROOT_URL",
1136 [Define to the root for URLs about GCC changes.])
1138 # Sanity check enable_languages in case someone does not run the toplevel
1139 # configure # script.
1140 AC_ARG_ENABLE(languages,
1141 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
1142 [case ,${enable_languages}, in
1144 # go safe -- we cannot be much sure without the toplevel
1146 # analysis of which target libs are present and usable
1150 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
1155 enable_languages=c,${enable_languages}
1158 [enable_languages=c])
1160 # If top-level libada has been disabled, then wire in install-gnatlib
1161 # invocation with `make install', so that one can build and install
1162 # the library manually with `make -C gcc all gnatlib gnattools install'.
1163 if test x"$enable_libada" = xno; then
1164 gnat_install_lib=gnat-install-lib
1168 AC_SUBST(gnat_install_lib)
1170 if test x"$enable_as_accelerator_for" != x; then
1171 AC_DEFINE(ACCEL_COMPILER, 1,
1172 [Define if this compiler should be built as the offload target compiler.])
1173 enable_as_accelerator=yes
1174 sedscript="s#${target_noncanonical}#${enable_as_accelerator_for}-accel-${target_noncanonical}#"
1175 program_transform_name=`echo $program_transform_name | sed $sedscript`
1176 accel_dir_suffix=/accel/${target_noncanonical}
1177 real_target_noncanonical=${enable_as_accelerator_for}
1179 AC_SUBST(enable_as_accelerator)
1180 AC_SUBST(real_target_noncanonical)
1181 AC_SUBST(accel_dir_suffix)
1183 for tgt in `echo $enable_offload_targets | sed 's/,/ /g'`; do
1184 tgt=`echo $tgt | sed 's/=.*//'`
1189 omp_device_property=omp-device-properties-gcn
1190 omp_device_property_tmake_file="${omp_device_property_tmake_file} \$(srcdir)/config/gcn/t-omp-device"
1193 omp_device_property=omp-device-properties-nvptx
1194 omp_device_property_tmake_file="${omp_device_property_tmake_file} \$(srcdir)/config/nvptx/t-omp-device"
1197 AC_MSG_ERROR([unknown offload target specified])
1200 omp_device_properties="${omp_device_properties} ${tgt}=${omp_device_property}"
1201 omp_device_property_deps="${omp_device_property_deps} ${omp_device_property}"
1203 if test x"$offload_targets" = x; then
1204 offload_targets=$tgt
1206 offload_targets="$offload_targets,$tgt"
1209 AC_SUBST(omp_device_properties)
1210 AC_SUBST(omp_device_property_deps)
1212 AC_DEFINE_UNQUOTED(OFFLOAD_TARGETS, "$offload_targets",
1213 [Define to offload targets, separated by commas.])
1214 if test x"$enable_offloading" != x; then
1215 AC_DEFINE(ENABLE_OFFLOADING, 1,
1216 [Define this to enable support for offloading.])
1218 AC_DEFINE(ENABLE_OFFLOADING, 0,
1219 [Define this to enable support for offloading.])
1222 if test "x$enable_offload_defaulted" = xyes; then
1223 AC_DEFINE(OFFLOAD_DEFAULTED, 1,
1224 [Define to 1 to if -foffload is defaulted])
1227 AC_ARG_WITH(multilib-list,
1228 [AS_HELP_STRING([--with-multilib-list], [select multilibs (AArch64, ARM, AVR, OR1K, RISC-V, SH and x86-64 only)])],
1230 with_multilib_list=default)
1232 AC_ARG_WITH(multilib-generator,
1233 [AS_HELP_STRING([--with-multilib-generator], [Multi-libs configuration string (RISC-V only)])],
1235 with_multilib_generator=default)
1237 # -------------------------
1238 # Checks for other programs
1239 # -------------------------
1243 # Find some useful tools
1245 # We need awk to create options.cc and options.h.
1246 # Bail out if it's missing.
1248 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
1255 AC_SUBST(ranlib_flags)
1259 # See if cmp has --ignore-initial.
1260 gcc_AC_PROG_CMP_IGNORE_INITIAL
1262 # See if we have the mktemp command.
1263 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
1265 # See if makeinfo has been installed and is modern enough
1266 # that we can use it.
1267 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
1268 [GNU texinfo.* \([0-9][0-9.]*\)],
1269 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
1270 if test $gcc_cv_prog_makeinfo_modern = no; then
1272 *** Makeinfo is missing or too old.
1273 *** Info documentation will not be built.])
1278 AC_SUBST(BUILD_INFO)
1280 # Determine whether makeinfo supports the CONTENTS_OUTPUT_LOCATION variable.
1281 # If it does, we want to pass it to makeinfo in order to restore the old
1282 # behavior of @{summary,}contents placement.
1283 MAKEINFO_TOC_INLINE_FLAG=
1284 AS_IF([test x"$MAKEINFO" != x], [
1285 AC_CACHE_CHECK([for CONTENTS_OUTPUT_LOCATION support in $MAKEINFO],
1286 [gcc_cv_texi_add_toc_inline_flags], [
1287 # Detect the unknown variable CONTENTS_OUTPUT_LOCATION warning
1288 if "$MAKEINFO" -c CONTENTS_OUTPUT_LOCATION=inline </dev/null 2>&1 \
1289 | grep CONTENTS_OUTPUT_LOCATION >/dev/null; then
1290 gcc_cv_texi_add_toc_inline_flags=no
1292 gcc_cv_texi_add_toc_inline_flags=yes
1295 if test x"$gcc_cv_texi_add_toc_inline_flags" = xyes; then
1296 MAKEINFO_TOC_INLINE_FLAG='-c CONTENTS_OUTPUT_LOCATION=inline'
1299 AC_SUBST([MAKEINFO_TOC_INLINE_FLAG])
1301 # Is pod2man recent enough to regenerate manpages?
1302 AC_MSG_CHECKING([for recent Pod::Man])
1303 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
1305 GENERATED_MANPAGES=generated-manpages
1310 AC_SUBST(GENERATED_MANPAGES)
1312 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
1315 dnl Don't use AC_PROG_LEX; we insist on flex.
1316 dnl LEXLIB is not useful in gcc.
1317 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
1320 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
1323 ACX_CHECK_PROG_VER(PYTHON, python3, --version,
1324 [Python.* \([0-9][0-9.]*\)],
1325 [3.[4-9]*|3.[1-9][0-9]*|[4-9].*|[1-9][0-9]*])
1326 if test $gcc_cv_prog_python3_modern = no; then
1328 *** Python3 is missing.
1329 *** Documentation for modula-2 will not include the target SYSTEM module.])
1334 AC_SUBST(HAVE_PYTHON)
1336 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
1337 # check for build == host before using them.
1340 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
1341 && test -d ../binutils ; then
1342 NM='${objdir}/../binutils/nm-new'
1344 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
1348 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
1349 && test -d ../binutils ; then
1350 AR='${objdir}/../binutils/ar'
1352 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
1355 # The jit documentation looks better if built with sphinx, but can be
1356 # built with texinfo if sphinx is not available.
1357 # Set "doc_build_sys" to "sphinx" or "texinfo" accordingly.
1358 AC_CHECK_PROG(doc_build_sys, sphinx-build, sphinx, texinfo)
1360 # --------------------
1361 # Checks for C headers
1362 # --------------------
1364 # Need to reject headers which give warnings, so that the -Werror bootstrap
1365 # works later. *sigh* This needs to come before all header checks.
1372 AC_HEADER_TIOCGWINSZ
1373 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
1374 fcntl.h ftw.h unistd.h sys/auxv.h sys/file.h sys/time.h sys/mman.h \
1375 sys/resource.h sys/param.h sys/times.h sys/stat.h sys/locking.h \
1376 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
1378 # Check for thread headers.
1379 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
1380 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
1382 # These tests can't be done till we know if we have limits.h.
1386 # ----------------------
1387 # Checks for C++ headers
1388 # ----------------------
1390 dnl Autoconf will give an error in the configure script if there is no
1391 dnl C++ preprocessor. Hack to prevent that.
1392 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
1394 m4_popdef([AC_MSG_ERROR])[]dnl
1396 AC_CHECK_HEADERS(unordered_map)
1397 AC_CHECK_HEADERS(tr1/unordered_map)
1398 AC_CHECK_HEADERS(ext/hash_map)
1401 # Dependency checking.
1405 AC_CONFIG_COMMANDS([gccdepdir],[
1406 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR
1407 for lang in $subdirs c-family common analyzer text-art rtl-ssa
1409 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs $lang/$DEPDIR
1410 done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR])
1412 ZW_PROG_COMPILER_DEPENDENCIES([CXX])
1419 # These libraries may be used by collect2.
1420 # We may need a special search path to get them linked.
1421 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
1423 for libs in '' -lld -lmld \
1424 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
1425 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1428 AC_TRY_LINK_FUNC(ldopen,
1429 [gcc_cv_collect2_libs="$libs"; break])
1432 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1433 case $gcc_cv_collect2_libs in
1435 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1437 AC_SUBST(COLLECT2_LIBS)
1439 # When building Ada code on Alpha, we need exc_resume which is usually in
1440 # -lexc. So test for it.
1443 AC_SEARCH_LIBS(exc_resume, exc)
1446 AC_SUBST(GNAT_LIBEXC)
1448 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1451 AC_SEARCH_LIBS(kstat_open, kstat)
1452 EXTRA_GCC_LIBS="$LIBS"
1454 AC_SUBST(EXTRA_GCC_LIBS)
1456 # Solaris needs libsocket and libnsl for socket functions before 11.4.
1457 # C++ needs those for libcody.
1465 # Some systems put ldexp and frexp in libm instead of libc; assume
1466 # they're both in the same place. jcf-dump needs them.
1469 AC_SEARCH_LIBS(ldexp, m)
1474 # Some systems need dlopen
1477 AC_SEARCH_LIBS(dlopen, dl)
1482 # Use <inttypes.h> only if it exists,
1483 # doesn't clash with <sys/types.h>, declares intmax_t and defines
1485 AC_MSG_CHECKING(for inttypes.h)
1486 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1487 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1488 [[#define __STDC_FORMAT_MACROS
1489 #include <sys/types.h>
1490 #include <inttypes.h>]],
1495 [gcc_cv_header_inttypes_h=yes],
1496 [gcc_cv_header_inttypes_h=no])])
1497 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1498 if test $gcc_cv_header_inttypes_h = yes; then
1499 AC_DEFINE(HAVE_INTTYPES_H, 1,
1500 [Define if you have a working <inttypes.h> header file.])
1503 # Look for the ZSTD package.
1506 AC_SUBST(ZSTD_INCLUDE)
1510 AC_SUBST(ZSTD_CPPFLAGS)
1511 AC_SUBST(ZSTD_LDFLAGS)
1513 [AS_HELP_STRING([--with-zstd=PATH],
1514 [specify prefix directory for installed zstd library.
1515 Equivalent to --with-zstd-include=PATH/include
1516 plus --with-zstd-lib=PATH/lib])])
1517 AC_ARG_WITH(zstd-include,
1518 [AS_HELP_STRING([--with-zstd-include=PATH],
1519 [specify directory for installed zstd include files])])
1520 AC_ARG_WITH(zstd-lib,
1521 [AS_HELP_STRING([--with-zstd-lib=PATH],
1522 [specify directory for the installed zstd library])])
1523 case "x$with_zstd" in
1529 *) ZSTD_INCLUDE=$with_zstd/include
1530 ZSTD_LIB=$with_zstd/lib
1534 if test "x$with_zstd" != xno; then
1535 if test "x$with_zstd_include" != x; then
1536 ZSTD_INCLUDE=$with_zstd_include
1538 if test "x$with_zstd_lib" != x; then
1539 ZSTD_LIB=$with_zstd_lib
1541 if test "x$ZSTD_INCLUDE" != x \
1542 && test "x$ZSTD_INCLUDE" != xno; then
1543 ZSTD_CPPFLAGS=-I$ZSTD_INCLUDE
1545 if test "x$ZSTD_LIB" != x \
1546 && test "x$ZSTD_LIB" != xno; then
1547 ZSTD_LDFLAGS=-L$ZSTD_LIB
1550 CXXFLAGS="$CXXFLAGS $ZSTD_CPPFLAGS"
1551 LDFLAGS="$LDFLAGS $ZSTD_LDFLAGS"
1553 # LTO can use zstd compression algorithm
1556 AC_SEARCH_LIBS(ZSTD_compress, zstd,, gcc_cv_header_zstd_h=no)
1561 AC_MSG_CHECKING(for zstd.h)
1562 AC_CACHE_VAL(gcc_cv_header_zstd_h,
1563 # We require version 1.3.0 or later. This is the first version that has
1564 # ZSTD_getFrameContentSize.
1565 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1567 #if ZSTD_VERSION_NUMBER < 10300
1568 #error "need zstd 1.3.0 or better"
1570 [gcc_cv_header_zstd_h=yes],
1571 [gcc_cv_header_zstd_h=no])])
1572 AC_MSG_RESULT($gcc_cv_header_zstd_h)
1573 if test $gcc_cv_header_zstd_h = yes; then
1574 AC_DEFINE(HAVE_ZSTD_H, 1,
1575 [Define if you have a working <zstd.h> header file.])
1576 elif test "x$with_zstd" != x; then
1577 as_fn_error $? "Unable to find zstd.h. See config.log for details." "$LINENO" 5
1581 dnl Disabled until we have a complete test for buggy enum bitfields.
1582 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1584 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1585 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1586 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1587 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1588 putchar_unlocked putc_unlocked)
1589 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoq \
1590 popen sysconf strsignal getrusage nl_langinfo \
1591 gettimeofday mbstowcs wcswidth mmap posix_fallocate setlocale \
1592 gcc_UNLOCKED_FUNCS madvise mallinfo mallinfo2 fstatat getauxval)
1594 if test x$ac_cv_func_mbstowcs = xyes; then
1595 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1596 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1602 [gcc_cv_func_mbstowcs_works=yes],
1603 [gcc_cv_func_mbstowcs_works=no],
1604 [gcc_cv_func_mbstowcs_works=yes])])
1605 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1606 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1607 [Define this macro if mbstowcs does not crash when its
1608 first argument is NULL.])
1612 AC_CHECK_TYPE(ssize_t, int)
1613 AC_CHECK_TYPE(caddr_t, char *)
1614 AC_CHECK_TYPE(sighander_t,
1615 AC_DEFINE(HAVE_SIGHANDLER_T, 1,
1616 [Define if <sys/signal.h> defines sighandler_t]),
1619 GCC_AC_FUNC_MMAP_BLACKLIST
1623 # Under VMS, vfork works very differently than on Unix. The standard test
1624 # won't work, and it isn't easily adaptable. It makes more sense to
1626 ac_cv_func_vfork_works=yes
1633 # Until we have in-tree GNU iconv:
1635 if test -f "$LTLIBICONV"; then
1636 LIBICONV_DEP=$LTLIBICONV
1638 AC_SUBST(LIBICONV_DEP)
1644 # We will need to find libiberty.h and ansidecl.h
1645 saved_CFLAGS="$CFLAGS"
1646 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1647 saved_CXXFLAGS="$CXXFLAGS"
1648 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1650 # gcc_AC_CHECK_DECLS doesn't support overloaded functions, so use the
1651 # normal autoconf function for these. But force definition of
1652 # HAVE_DECL_BASENAME like gcc_AC_CHECK_DECLS does, to suppress the bizarre
1653 # basename handling in libiberty.h.
1654 AC_CHECK_DECLS([basename(const char*), strstr(const char*,const char*)], , ,[
1655 #undef HAVE_DECL_BASENAME
1656 #define HAVE_DECL_BASENAME 1
1657 #include "ansidecl.h"
1658 #include "system.h"])
1660 gcc_AC_CHECK_DECLS(getenv atol atoll asprintf sbrk abort atof getcwd getwd \
1661 madvise stpcpy strnlen strsignal strverscmp \
1662 strtol strtoul strtoll strtoull setenv unsetenv \
1663 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1664 free getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1665 #include "ansidecl.h"
1666 #include "system.h"])
1668 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1669 #include "ansidecl.h"
1671 #ifdef HAVE_SYS_RESOURCE_H
1672 #include <sys/resource.h>
1676 gcc_AC_CHECK_DECLS(mallinfo mallinfo2, , ,[
1677 #include "ansidecl.h"
1679 #ifdef HAVE_MALLOC_H
1684 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1685 #include "ansidecl.h"
1687 #ifdef HAVE_SYS_RESOURCE_H
1688 #include <sys/resource.h>
1690 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1691 [Define to `long' if <sys/resource.h> doesn't define.])])
1693 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1694 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1695 # in collect2.cc, <fcntl.h> isn't visible, but the configure test below needs
1696 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1697 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1698 #include "ansidecl.h"
1707 gcc_AC_CHECK_DECLS(times, , ,[
1708 #include "ansidecl.h"
1710 #ifdef HAVE_SYS_TIMES_H
1711 #include <sys/times.h>
1715 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1716 #include "ansidecl.h"
1721 # More time-related stuff.
1722 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1723 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1724 #include "ansidecl.h"
1726 #ifdef HAVE_SYS_TIMES_H
1727 #include <sys/times.h>
1729 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1730 if test $ac_cv_struct_tms = yes; then
1731 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1732 [Define if <sys/times.h> defines struct tms.])
1735 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1736 # revisit after autoconf 2.50.
1737 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1738 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1739 #include "ansidecl.h"
1741 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1742 if test $gcc_cv_type_clock_t = yes; then
1743 AC_DEFINE(HAVE_CLOCK_T, 1,
1744 [Define if <time.h> defines clock_t.])
1747 # Check if F_SETLKW is supported by fcntl.
1748 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1749 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1750 #include <fcntl.h>]], [[
1756 return fcntl (1, F_SETLKW, &fl);]])],
1757 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1758 if test $ac_cv_f_setlkw = yes; then
1759 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1760 [Define if F_SETLKW supported by fcntl.])
1763 # Check if O_CLOEXEC is defined by fcntl
1764 AC_CACHE_CHECK(for O_CLOEXEC, ac_cv_o_cloexec, [
1765 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1766 #include <fcntl.h>]], [[
1767 return open ("/dev/null", O_RDONLY | O_CLOEXEC);]])],
1768 [ac_cv_o_cloexec=yes],[ac_cv_o_cloexec=no])])
1769 if test $ac_cv_o_cloexec = yes; then
1770 AC_DEFINE(HOST_HAS_O_CLOEXEC, 1,
1771 [Define if O_CLOEXEC supported by fcntl.])
1774 # Check if O_NONBLOCK is defined by fcntl
1775 AC_CHECK_HEADERS([fcntl.h])
1776 AC_CHECK_DECL(O_NONBLOCK,,,[#include <fcntl.h>])
1777 if test $ac_cv_have_decl_O_NONBLOCK = yes; then
1778 AC_DEFINE(HOST_HAS_O_NONBLOCK, 1,
1779 [Define if O_NONBLOCK supported by fcntl.])
1783 # C++ Modules would like some networking features to provide the mapping
1784 # server. You can still use modules without them though.
1785 # The following network-related checks could probably do with some
1786 # Windows and other non-linux defenses and checking.
1788 # Local socket connectivity wants AF_UNIX networking
1789 # Check for AF_UNIX networking
1790 AC_CACHE_CHECK(for AF_UNIX, ac_cv_af_unix, [
1791 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1792 #include <sys/types.h>
1793 #include <sys/socket.h>
1795 #include <netinet/in.h>]],[[
1797 un.sun_family = AF_UNSPEC;
1798 int fd = socket (AF_UNIX, SOCK_STREAM, 0);
1799 connect (fd, (sockaddr *)&un, sizeof (un));]])],
1800 [ac_cv_af_unix=yes],
1801 [ac_cv_af_unix=no])])
1802 if test $ac_cv_af_unix = yes; then
1803 AC_DEFINE(HAVE_AF_UNIX, 1,
1804 [Define if AF_UNIX supported.])
1807 # Remote socket connectivity wants AF_INET6 networking
1808 # Check for AF_INET6 networking
1809 AC_CACHE_CHECK(for AF_INET6, ac_cv_af_inet6, [
1810 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1811 #include <sys/types.h>
1812 #include <sys/socket.h>
1813 #include <netinet/in.h>
1814 #include <netdb.h>]],[[
1816 in6.sin6_family = AF_UNSPEC;
1817 struct addrinfo *addrs = 0;
1818 struct addrinfo hints;
1820 hints.ai_family = AF_INET6;
1821 hints.ai_socktype = SOCK_STREAM;
1822 hints.ai_protocol = 0;
1823 hints.ai_canonname = 0;
1826 int e = getaddrinfo ("localhost", 0, &hints, &addrs);
1827 const char *str = gai_strerror (e);
1828 freeaddrinfo (addrs);
1829 int fd = socket (AF_INET6, SOCK_STREAM, 0);
1830 connect (fd, (sockaddr *)&in6, sizeof (in6));]])],
1831 [ac_cv_af_inet6=yes],
1832 [ac_cv_af_inet6=no])])
1833 if test $ac_cv_af_inet6 = yes; then
1834 AC_DEFINE(HAVE_AF_INET6, 1,
1835 [Define if AF_INET6 supported.])
1838 # Check if _LK_LOCK is supported by _locking
1839 AC_CACHE_CHECK(for _LK_LOCK, ac_cv_lk_lock, [
1840 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1842 #include <sys/locking.h>]], [[
1844 return _locking (fd, _LK_LOCK, 0);]])],
1845 [ac_cv_lk_lock=yes],[ac_cv_lk_lock=no])])
1846 if test $ac_cv_lk_lock = yes; then
1847 AC_DEFINE(HOST_HAS_LK_LOCK, 1,
1848 [Define if _LK_LOC supported by _locking.])
1851 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1852 CFLAGS="$saved_CFLAGS"
1853 CXXFLAGS="$saved_CXXFLAGS"
1855 # mkdir takes a single argument on some systems.
1856 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1864 # With Setjmp/Longjmp based exception handling.
1865 AC_ARG_ENABLE(sjlj-exceptions,
1866 [AS_HELP_STRING([--enable-sjlj-exceptions],
1867 [arrange to use setjmp/longjmp exception handling])],
1868 [force_sjlj_exceptions=yes],
1871 force_sjlj_exceptions=yes
1875 force_sjlj_exceptions=no
1878 if test $force_sjlj_exceptions = yes; then
1879 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1880 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1881 [Define 0/1 to force the choice for exception handling model.])
1884 # --------------------------------------------------------
1885 # Build, host, and target specific configuration fragments
1886 # --------------------------------------------------------
1888 # Collect build-machine-specific information.
1889 . ${srcdir}/config.build || exit 1
1891 # Collect host-machine-specific information.
1892 . ${srcdir}/config.host || exit 1
1896 # Collect target-machine-specific information.
1897 . ${srcdir}/config.gcc || exit 1
1899 extra_objs="${host_extra_objs} ${extra_objs}"
1900 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1902 # Default the target-machine variables that were not explicitly set.
1903 if test x"$tm_file" = x
1904 then tm_file=$cpu_type/$cpu_type.h; fi
1906 if test x"$extra_headers" = x
1907 then extra_headers=; fi
1909 if test x$md_file = x
1910 then md_file=$cpu_type/$cpu_type.md; fi
1912 if test x$out_file = x
1913 then out_file=$cpu_type/$cpu_type.cc; fi
1915 if test x"$tmake_file" = x
1916 then tmake_file=$cpu_type/t-$cpu_type
1919 # Support --enable-initfini-array.
1920 if test x$enable_initfini_array != xno; then
1921 tm_file="${tm_file} initfini-array.h"
1924 if test x"$dwarf2" = xyes
1925 then tm_file="$tm_file tm-dwarf2.h"
1928 # Say what files are being used for the output code and MD file.
1929 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1930 echo "Using \`$srcdir/config/$md_file' as machine description file."
1932 # If any of the xm_file variables contain nonexistent files, warn
1933 # about them and drop them.
1936 for x in $build_xm_file; do
1937 if test -f $srcdir/config/$x
1939 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1945 for x in $host_xm_file; do
1946 if test -f $srcdir/config/$x
1948 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1954 for x in $xm_file; do
1955 if test -f $srcdir/config/$x
1957 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1963 for f in $tm_file; do
1966 if test $count = ax; then
1967 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1969 echo "Using the following target machine macro files:"
1970 for f in $tm_file; do
1971 echo " $srcdir/config/$f"
1975 if test x$use_long_long_for_widest_fast_int = xyes; then
1976 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1977 [Define to 1 if the 'long long' type is wider than 'long' but still
1978 efficiently supported by the host hardware.])
1981 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1982 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1984 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1985 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1988 for f in $host_xm_file; do
1991 if test $count = a; then
1993 elif test $count = ax; then
1994 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1996 echo "Using the following host machine macro files:"
1997 for f in $host_xm_file; do
1998 echo " $srcdir/config/$f"
2001 echo "Using ${out_host_hook_obj} for host machine hooks."
2003 if test "$host_xm_file" != "$build_xm_file"; then
2005 for f in $build_xm_file; do
2008 if test $count = a; then
2010 elif test $count = ax; then
2011 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
2013 echo "Using the following build machine macro files:"
2014 for f in $build_xm_file; do
2015 echo " $srcdir/config/$f"
2020 if test -n "$configured_native_system_header_dir"; then
2021 native_system_header_dir=$configured_native_system_header_dir
2023 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
2024 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
2028 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
2029 gcc_cv_mcontext_underscores,
2030 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
2031 #include <sys/cdefs.h>
2032 #include <sys/signal.h>
2033 #include <ucontext.h>
2034 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
2036 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
2037 if test $gcc_cv_mcontext_underscores = yes; then
2038 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
2039 [mcontext_t fields start with __])
2048 # Check if a valid thread package
2049 case ${enable_threads} in
2052 target_thread_file='single'
2056 target_thread_file='single'
2058 aix | dce | lynx | mipssde | posix | rtems | \
2059 single | tpf | vxworks | win32 | mcf)
2060 target_thread_file=${enable_threads}
2063 echo "${enable_threads} is an unknown thread package" 1>&2
2068 if test x${thread_file} = x; then
2069 # No thread file set by target-specific clauses in config.gcc,
2070 # so use file chosen by default logic above
2071 thread_file=${target_thread_file}
2079 if test x$enable___cxa_atexit = xyes || \
2080 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
2081 if test x$host = x$target; then
2083 # mingw32 doesn't have __cxa_atexit but uses atexit registration
2084 # keyed to flag_use_cxa_atexit
2092 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
2093 [echo "__cxa_atexit can't be enabled on this target"])
2097 # We can't check for __cxa_atexit when building a cross, so assume
2101 if test x$use_cxa_atexit = xyes; then
2102 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
2103 [Define if you want to use __cxa_atexit, rather than atexit, to
2104 register C++ destructors for local statics and global objects.
2105 This is essential for fully standards-compliant handling of
2106 destructors, but requires __cxa_atexit in libc.])
2110 # Look for a file containing extra machine modes.
2111 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
2112 extra_modes_file='$(srcdir)'/config/${extra_modes}
2113 AC_SUBST(extra_modes_file)
2114 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
2115 [Define to the name of a file containing a list of extra machine modes
2116 for this architecture.])
2119 # Convert extra_options into a form suitable for Makefile use.
2122 for f in $extra_options; do
2123 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
2124 all_opt_files="$all_opt_files $srcdir/config/$f"
2126 AC_SUBST(extra_opt_files)
2128 # auto-host.h is the file containing items generated by autoconf and is
2129 # the first file included by config.h.
2130 # If host=build, it is correct to have bconfig include auto-host.h
2131 # as well. If host!=build, we are in error and need to do more
2132 # work to find out the build config parameters.
2133 if test x$host = x$build
2135 build_auto=auto-host.h
2136 HAVE_AUTO_BUILD='# '
2138 # We create a subdir, then run autoconf in the subdir.
2139 # To prevent recursion we set host and build for the new
2140 # invocation of configure to the build for this invocation
2147 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
2148 *) realsrcdir=../${srcdir};;
2150 # Clearing GMPINC is necessary to prevent host headers being
2151 # used by the build compiler. Defining GENERATOR_FILE stops
2152 # system.h from including gmp.h.
2153 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
2154 CXX="${CXX_FOR_BUILD}" CXXFLAGS="${CXXFLAGS_FOR_BUILD}" \
2155 LD="${LD_FOR_BUILD}" LDFLAGS="${LDFLAGS_FOR_BUILD}" \
2156 GMPINC="" CPPFLAGS="${CPPFLAGS_FOR_BUILD} -DGENERATOR_FILE" \
2157 ${realsrcdir}/configure \
2158 --enable-languages=${enable_languages-all} \
2159 ${enable_obsolete+--enable-obsolete="$enable_obsolete"} \
2160 ${enable_option_checking+--enable-option-checking="$enable_option_checking"} \
2161 --target=$target_alias --host=$build_alias \
2162 --build=$build_alias || exit # retaining $tempdir
2164 # We just finished tests for the build machine, so rename
2165 # the file auto-build.h in the gcc directory.
2166 mv auto-host.h ../auto-build.h
2169 build_auto=auto-build.h
2172 AC_SUBST(build_subdir)
2173 AC_SUBST(HAVE_AUTO_BUILD)
2175 tm_file="${tm_file} defaults.h"
2176 tm_p_file="${tm_p_file} tm-preds.h"
2177 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
2178 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
2179 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
2180 # put this back in temporarily.
2181 xm_file="auto-host.h ansidecl.h ${xm_file}"
2188 # Compile in configure arguments.
2189 if test -f configargs.h ; then
2190 # Being re-configured.
2191 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
2192 gcc_reconf_arguments=`echo "$gcc_config_arguments" | sed -e 's/^.*\( : (reconfigured) .*$\)/\1/'`
2193 if [ "$gcc_reconf_arguments" != " : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS" ]; then
2194 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
2197 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
2200 # Double all backslashes and backslash all quotes to turn
2201 # gcc_config_arguments into a C string.
2202 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
2203 $gcc_config_arguments
2205 gcc_config_arguments_str=`cat conftest.out`
2208 cat > configargs.h <<EOF
2209 /* Generated automatically. */
2210 static const char configuration_arguments[] = "$gcc_config_arguments_str";
2211 static const char thread_model[] = "$thread_file";
2213 static const struct {
2214 const char *name, *value;
2215 } configure_default_options[] = $configure_default_options;
2220 gcc_BASEVER=`cat $srcdir/BASE-VER`
2221 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
2222 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
2223 if test -f $srcdir/REVISION ; then
2224 gcc_REVISION=`cat $srcdir/REVISION`
2228 cat > plugin-version.h <<EOF
2229 #include "configargs.h"
2231 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
2232 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
2233 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
2234 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
2236 static char basever[] = "$gcc_BASEVER";
2237 static char datestamp[] = "$gcc_DATESTAMP";
2238 static char devphase[] = "$gcc_DEVPHASE";
2239 static char revision[] = "$gcc_REVISION";
2241 /* FIXME plugins: We should make the version information more precise.
2242 One way to do is to add a checksum. */
2244 static struct plugin_gcc_version gcc_version = {basever, datestamp,
2246 configuration_arguments};
2250 # Determine what GCC version number to use in filesystem paths.
2253 # Internationalization
2254 ZW_GNU_GETTEXT_SISTER_DIR
2256 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
2257 # -liconv on the link line twice.
2258 case "$LIBINTL" in *$LIBICONV*)
2262 AC_ARG_ENABLE(secureplt,
2263 [AS_HELP_STRING([--enable-secureplt],
2264 [enable -msecure-plt by default for PowerPC])],
2267 AC_ARG_ENABLE(mingw-wildcard,
2268 [AS_HELP_STRING([--enable-mingw-wildcard],
2269 [Set whether to expand wildcard on command-line.
2270 Default to platform configuration])],
2271 [],[enable_mingw_wildcard=platform])
2272 AS_IF([test x"$enable_mingw_wildcard" != xplatform ],
2273 [AC_DEFINE_UNQUOTED(MINGW_DOWILDCARD,
2274 $(test x"$enable_mingw_wildcard" = xno; echo $?),
2275 [Value to set mingw's _dowildcard to.])])
2277 AC_ARG_ENABLE(large-address-aware,
2278 [AS_HELP_STRING([--enable-large-address-aware],
2279 [Link mingw executables with --large-address-aware])])
2280 AS_IF([test x"$enable_large_address_aware" = xyes],
2281 [AC_DEFINE([MINGW_DEFAULT_LARGE_ADDR_AWARE], 1,
2282 [Define if we should link mingw executables with --large-address-aware])])
2284 AC_ARG_ENABLE(leading-mingw64-underscores,
2285 AS_HELP_STRING([--enable-leading-mingw64-underscores],
2286 [enable leading underscores on 64 bit mingw targets]),
2288 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
2289 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
2290 [Define if we should use leading underscore on 64 bit mingw targets])])
2293 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
2296 AC_ARG_ENABLE(frame-pointer,
2297 [AS_HELP_STRING([--enable-frame-pointer],
2298 [enable -fno-omit-frame-pointer by default for x86])], [],
2301 linux* | gnu* | darwin[[8912]]* | cygwin* | mingw*)
2302 # Enable -fomit-frame-pointer by default for these systems with DWARF2.
2303 enable_frame_pointer=no
2306 enable_frame_pointer=yes
2312 i[[34567]]86-*-* | x86_64-*-*)
2313 if test "x$enable_cld" = xyes; then
2314 tm_defines="${tm_defines} USE_IX86_CLD=1"
2316 if test "x$enable_frame_pointer" = xyes; then
2317 tm_defines="${tm_defines} USE_IX86_FRAME_POINTER=1"
2322 # Windows32 Registry support for specifying GCC installation paths.
2323 AC_ARG_ENABLE(win32-registry,
2324 [AS_HELP_STRING([--disable-win32-registry],
2325 [disable lookup of installation paths in the
2326 Registry on Windows hosts])
2327 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
2328 AS_HELP_STRING([--enable-win32-registry=KEY],
2329 [use KEY instead of GCC version as the last portion
2330 of the registry key])],,)
2333 win32 | pe | cygwin* | mingw32*)
2334 if test "x$enable_win32_registry" != xno; then
2335 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
2338 if test "x$enable_win32_registry" != xno; then
2339 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
2340 [Define to 1 if installation paths should be looked up in the Windows
2341 Registry. Ignored on non-Windows hosts.])
2343 if test "x$enable_win32_registry" != xyes \
2344 && test "x$enable_win32_registry" != x; then
2345 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
2346 [Define to be the last component of the Windows registry key under which
2347 to look for installation paths. The full key used will be
2348 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
2349 The default is the GCC version number.])
2355 # Get an absolute path to the GCC top-level source directory
2356 holddir=`${PWDCMD-pwd}`
2358 topdir=`${PWDCMD-pwd}`
2361 # Conditionalize the makefile for this host machine.
2363 for f in ${host_xmake_file}
2365 if test -f ${srcdir}/config/$f
2367 xmake_file="${xmake_file} \$(srcdir)/config/$f"
2371 # Conditionalize the makefile for this target machine.
2373 for f in ${tmake_file}
2375 if test -f ${srcdir}/config/$f
2377 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
2380 tmake_file="${tmake_file_}${omp_device_property_tmake_file}"
2382 out_object_file=`basename $out_file .cc`.o
2383 common_out_object_file=`basename $common_out_file .cc`.o
2385 tm_file_list="options.h"
2386 tm_include_list="options.h insn-constants.h"
2387 for f in $tm_file; do
2390 f=`echo $f | sed 's/^..//'`
2391 tm_file_list="${tm_file_list} $f"
2392 tm_include_list="${tm_include_list} $f"
2395 tm_file_list="${tm_file_list} \$(srcdir)/$f"
2396 tm_include_list="${tm_include_list} $f"
2399 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
2400 tm_include_list="${tm_include_list} config/$f"
2407 for f in $tm_p_file; do
2410 tm_p_file_list="${tm_p_file_list} $f"
2411 tm_p_include_list="${tm_p_include_list} $f"
2414 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
2415 tm_p_include_list="${tm_p_include_list} config/$f"
2421 for f in $tm_d_file; do
2424 tm_d_file_list="${tm_d_file_list} \$(srcdir)/config/$f"
2425 tm_d_include_list="${tm_d_include_list} config/$f"
2431 tm_rust_include_list=
2432 for f in $tm_rust_file; do
2435 tm_rust_file_list="${tm_rust_file_list} \$(srcdir)/config/$f"
2436 tm_rust_include_list="${tm_rust_include_list} config/$f"
2443 for f in $xm_file; do
2446 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
2447 xm_include_list="${xm_include_list} $f"
2450 xm_file_list="${xm_file_list} $f"
2451 xm_include_list="${xm_include_list} $f"
2454 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
2455 xm_include_list="${xm_include_list} config/$f"
2461 host_xm_include_list=
2462 for f in $host_xm_file; do
2465 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
2466 host_xm_include_list="${host_xm_include_list} $f"
2469 host_xm_file_list="${host_xm_file_list} $f"
2470 host_xm_include_list="${host_xm_include_list} $f"
2473 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
2474 host_xm_include_list="${host_xm_include_list} config/$f"
2480 for f in $build_xm_file; do
2483 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
2484 build_xm_include_list="${build_xm_include_list} $f"
2486 auto-build.h | auto-host.h )
2487 build_xm_file_list="${build_xm_file_list} $f"
2488 build_xm_include_list="${build_xm_include_list} $f"
2491 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
2492 build_xm_include_list="${build_xm_include_list} config/$f"
2497 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
2498 # cross-compiler which does not use the native headers and libraries.
2499 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
2500 CROSS= AC_SUBST(CROSS)
2501 ALL=all.internal AC_SUBST(ALL)
2502 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
2503 BUILD_SYSTEM_HEADER_DIR=$SYSTEM_HEADER_DIR AC_SUBST(BUILD_SYSTEM_HEADER_DIR)
2505 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x ||
2506 test x$build != x$host || test "x$with_build_sysroot" != x; then
2507 if test "x$with_build_sysroot" != x; then
2508 BUILD_SYSTEM_HEADER_DIR=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
2510 BUILD_SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2513 if test x$host != x$target
2515 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
2517 SYSTEM_HEADER_DIR=$BUILD_SYSTEM_HEADER_DIR
2518 elif test "x$TARGET_SYSTEM_ROOT" != x; then
2519 SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2522 if test "x$with_build_sysroot" != "x"; then
2523 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
2524 elif test "x$with_sysroot" = x; then
2525 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
2526 elif test "x$with_sysroot" = xyes; then
2527 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
2529 target_header_dir="${with_sysroot}${native_system_header_dir}"
2532 target_header_dir=${native_system_header_dir}
2535 # If this is a cross-compiler that does not
2536 # have its own set of headers then define
2539 # If this is using newlib, without having the headers available now,
2540 # then define inhibit_libc in LIBGCC2_CFLAGS.
2541 # This prevents libgcc2 from containing any code which requires libc
2543 : ${inhibit_libc=false}
2544 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
2545 test x$with_newlib = xyes ; } &&
2546 { test "x$with_headers" = xno || test ! -f "$target_header_dir/stdio.h"; } ; then
2549 AC_SUBST(inhibit_libc)
2551 # When building gcc with a cross-compiler, we need to adjust things so
2552 # that the generator programs are still built with the native compiler.
2553 # Also, we cannot run fixincludes.
2555 # These are the normal (build=host) settings:
2556 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
2557 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
2558 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
2559 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
2560 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
2561 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
2563 # And these apply if build != host, or we are generating coverage data
2564 if test x$build != x$host || test "x$coverage_flags" != x
2566 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS-$@) $(CFLAGS_FOR_BUILD)'
2567 BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS-$@) $(CXXFLAGS_FOR_BUILD)'
2568 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
2572 if test x$enable_fixincludes = xno;
2577 # Expand extra_headers to include complete path.
2578 # This substitutes for lots of t-* files.
2580 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
2581 for file in ${extra_headers} ; do
2582 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
2585 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
2586 if test x"$use_gcc_tgmath" = xyes
2587 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
2590 # Define collect2 in Makefile.
2591 case $host_can_use_collect2 in
2593 *) collect2='collect2$(exeext)' ;;
2595 AC_SUBST([collect2])
2597 # Add a definition of USE_COLLECT2 if system wants one.
2598 case $use_collect2 in
2599 no) use_collect2= ;;
2602 host_xm_defines="${host_xm_defines} USE_COLLECT2"
2603 xm_defines="${xm_defines} USE_COLLECT2"
2604 case $host_can_use_collect2 in
2606 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
2612 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
2613 [Define to the name of the LTO plugin DSO that must be
2614 passed to the linker's -plugin=LIB option.])
2616 # ---------------------------
2617 # Assembler & linker features
2618 # ---------------------------
2620 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
2621 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
2622 # However when ld-new is first executed from the build tree, libtool will
2623 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
2624 # to the build tree. While doing this we need to use the previous-stage
2625 # linker, or we have an infinite loop. The presence of a shell script as
2626 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
2627 # the gcc/collect-ld script. So we need to know how libtool works, or
2628 # exec-tool will fail.
2630 m4_defun([_LT_CONFIG_COMMANDS], [])
2633 AC_SUBST(enable_fast_install)
2635 # Identify the assembler which will work hand-in-glove with the newly
2636 # built GCC, so that we can examine its features. This is the assembler
2637 # which will be driven by the driver program.
2639 # If build != host, and we aren't building gas in-tree, we identify a
2640 # build->target assembler and hope that it will have the same features
2641 # as the host->target assembler we'll be using.
2642 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
2644 m4_pattern_allow([AS_FOR_TARGET])dnl
2645 AS_VAR_SET_IF(gcc_cv_as,, [
2646 if test -x "$DEFAULT_ASSEMBLER"; then
2647 gcc_cv_as="$DEFAULT_ASSEMBLER"
2648 elif test -f $gcc_cv_as_gas_srcdir/configure.ac \
2649 && test -f ../gas/Makefile \
2650 && test x$build = x$host; then
2651 gcc_cv_as=../gas/as-new$build_exeext
2652 elif test -x as$build_exeext; then
2653 # Build using assembler in the current directory.
2654 gcc_cv_as=./as$build_exeext
2655 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
2656 gcc_cv_as="$AS_FOR_TARGET"
2658 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
2661 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
2662 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
2663 case "$ORIGINAL_AS_FOR_TARGET" in
2664 ./as | ./as$build_exeext) ;;
2665 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2670 [[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]],
2671 [case "${enableval}" in
2677 install_gold_as_default=no
2679 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
2680 [case "${enableval}" in
2682 install_gold_as_default=yes
2685 if test x${default_ld} != x; then
2686 install_gold_as_default=yes
2692 AC_MSG_ERROR([invalid --enable-gold argument])
2696 # Identify the linker which will work hand-in-glove with the newly
2697 # built GCC, so that we can examine its features. This is the linker
2698 # which will be driven by the driver program.
2700 # If build != host, and we aren't building gas in-tree, we identify a
2701 # build->target linker and hope that it will have the same features
2702 # as the host->target linker we'll be using.
2703 gcc_cv_gld_major_version=
2704 gcc_cv_gld_minor_version=
2705 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2706 gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold
2707 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2709 AS_VAR_SET_IF(gcc_cv_ld,, [
2710 if test -x "$DEFAULT_LINKER"; then
2711 gcc_cv_ld="$DEFAULT_LINKER"
2712 elif test $install_gold_as_default = yes \
2713 && test -f $gcc_cv_ld_gold_srcdir/configure.ac \
2714 && test -f ../gold/Makefile \
2715 && test x$build = x$host; then
2716 gcc_cv_ld=../gold/ld-new$build_exeext
2717 elif test -f $gcc_cv_ld_gld_srcdir/configure.ac \
2718 && test -f ../ld/Makefile \
2719 && test x$build = x$host; then
2720 gcc_cv_ld=../ld/ld-new$build_exeext
2721 elif test -x collect-ld$build_exeext; then
2722 # Build using linker in the current directory.
2723 gcc_cv_ld=./collect-ld$build_exeext
2724 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2725 gcc_cv_ld="$LD_FOR_TARGET"
2727 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2730 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2731 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2732 # if the PLUGIN_LD is set ld-new, just have it as ld
2733 # as that is the installed named.
2734 if test x$PLUGIN_LD_SUFFIX = xld-new \
2735 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2738 AC_ARG_WITH(plugin-ld,
2739 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2740 [if test x"$withval" != x; then
2741 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2742 PLUGIN_LD_SUFFIX="$withval"
2744 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2745 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2747 # Check to see if we are using gold instead of ld
2748 AC_MSG_CHECKING(whether we are using gold)
2750 if test x$gcc_cv_ld != x; then
2751 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2752 | grep "GNU gold" > /dev/null; then
2756 AC_MSG_RESULT($ld_is_gold)
2758 # Check to see if we are using mold instead of ld
2759 AC_MSG_CHECKING(whether we are using mold)
2761 if test x$gcc_cv_ld != x; then
2762 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2763 | grep "mold" > /dev/null; then
2767 AC_MSG_RESULT($ld_is_mold)
2770 AC_MSG_CHECKING(gold linker with split stack support as non default)
2771 # Check to see if default ld is not gold, but gold is
2772 # available and has support for split stack. If gcc was configured
2773 # with gold then no checking is done.
2775 if test x$ld_is_gold = xno && which ${gcc_cv_ld}.gold >/dev/null 2>&1; then
2777 # For platforms other than powerpc64*, enable as appropriate.
2780 ld_gold=`which ${gcc_cv_ld}.gold`
2781 # Make sure this gold has minimal split stack support
2782 if $ld_gold --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then
2783 ld_vers=`$ld_gold --version | sed 1q`
2784 gold_vers=`echo $ld_vers | sed -n \
2785 -e 's,^[[^)]]*[[ ]]\([[0-9]][[0-9]]*\.[[0-9]][[0-9]]*[[^)]]*\)) .*$,\1,p'`
2787 # check that the gold version contains the complete split stack support
2788 # on powerpc64 big and little endian
2790 case "$gold_vers" in
2791 2.25.[[1-9]]*|2.2[[6-9]][[.0-9]]*|2.[[3-9]][[.0-9]]*|[[3-9]].[[.0-9]]*) gold_non_default=yes
2793 *) gold_non_default=no
2799 if test $gold_non_default = yes; then
2800 AC_DEFINE(HAVE_GOLD_NON_DEFAULT_SPLIT_STACK, 1,
2801 [Define if the gold linker supports split stack and is available as a non-default])
2804 AC_MSG_RESULT($gold_non_default)
2806 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2807 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2808 case "$ORIGINAL_LD_FOR_TARGET" in
2809 ./collect-ld | ./collect-ld$build_exeext) ;;
2810 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2813 AC_MSG_CHECKING(what linker to use)
2814 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2815 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2816 # Single tree build which includes ld. We want to prefer it
2817 # over whatever linker top-level may have detected, since
2818 # we'll use what we're building after installation anyway.
2819 AC_MSG_RESULT(newly built ld)
2821 in_tree_ld_is_elf=no
2822 if (grep 'EMUL = .*elf' ../ld/Makefile \
2823 || grep 'EMUL = .*linux' ../ld/Makefile \
2824 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2825 in_tree_ld_is_elf=yes
2826 elif test "$ld_is_gold" = yes; then
2827 in_tree_ld_is_elf=yes
2829 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
2832 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2833 if test x$gcc_cv_gld_version != x; then
2837 case $gcc_cv_gld_version in
2840 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2843 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2844 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2846 ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext
2847 ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext
2849 AC_MSG_RESULT($gcc_cv_ld)
2851 gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext`
2852 ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext
2853 ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext
2856 AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET)
2857 AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET)
2859 # Figure out what nm we will be using.
2860 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2861 AS_VAR_SET_IF(gcc_cv_nm,, [
2862 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2863 && test -f ../binutils/Makefile \
2864 && test x$build = x$host; then
2865 gcc_cv_nm=../binutils/nm-new$build_exeext
2866 elif test -x nm$build_exeext; then
2867 gcc_cv_nm=./nm$build_exeext
2868 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2869 gcc_cv_nm="$NM_FOR_TARGET"
2871 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2874 AC_MSG_CHECKING(what nm to use)
2875 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2876 # Single tree build which includes binutils.
2877 AC_MSG_RESULT(newly built nm)
2880 AC_MSG_RESULT($gcc_cv_nm)
2884 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2885 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2886 case "$ORIGINAL_NM_FOR_TARGET" in
2887 ./nm | ./nm$build_exeext) ;;
2888 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2892 # Figure out what objdump we will be using.
2893 AS_VAR_SET_IF(gcc_cv_objdump,, [
2894 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2895 && test -f ../binutils/Makefile \
2896 && test x$build = x$host; then
2897 # Single tree build which includes binutils.
2898 gcc_cv_objdump=../binutils/objdump$build_exeext
2899 elif test -x objdump$build_exeext; then
2900 gcc_cv_objdump=./objdump$build_exeext
2901 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2902 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2904 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2907 AC_MSG_CHECKING(what objdump to use)
2908 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2909 # Single tree build which includes binutils.
2910 AC_MSG_RESULT(newly built objdump)
2911 elif test x$gcc_cv_objdump = x; then
2912 AC_MSG_RESULT(not found)
2914 AC_MSG_RESULT($gcc_cv_objdump)
2917 # Figure out what readelf we will be using.
2918 AS_VAR_SET_IF(gcc_cv_readelf,, [
2919 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2920 && test -f ../binutils/Makefile \
2921 && test x$build = x$host; then
2922 # Single tree build which includes binutils.
2923 gcc_cv_readelf=../binutils/readelf$build_exeext
2924 elif test -x readelf$build_exeext; then
2925 gcc_cv_readelf=./readelf$build_exeext
2926 elif ( set dummy $READELF_FOR_TARGET; test -x $[2] ); then
2927 gcc_cv_readelf="$READELF_FOR_TARGET"
2929 AC_PATH_PROG(gcc_cv_readelf, $READELF_FOR_TARGET)
2932 AC_MSG_CHECKING(what readelf to use)
2933 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2934 # Single tree build which includes binutils.
2935 AC_MSG_RESULT(newly built readelf)
2936 elif test x$gcc_cv_readelf = x; then
2937 AC_MSG_RESULT(not found)
2939 AC_MSG_RESULT($gcc_cv_readelf)
2942 # Figure out what otool we will be using.
2943 AS_VAR_SET_IF(gcc_cv_otool,, [
2944 if test -x otool$build_exeext; then
2945 gcc_cv_otool=./otool$build_exeext
2946 elif ( set dummy $OTOOL_FOR_TARGET; test -x $[2] ); then
2947 gcc_cv_otool="$OTOOL_FOR_TARGET"
2949 AC_PATH_PROG(gcc_cv_otool, $OTOOL_FOR_TARGET)
2952 AC_MSG_CHECKING(what otool to use)
2953 if test x$gcc_cv_otool = x; then
2954 AC_MSG_RESULT(not found)
2956 AC_MSG_RESULT($gcc_cv_otool)
2959 # Figure out the dsymutil we will use.
2960 AS_VAR_SET_IF(gcc_cv_dsymutil,, [
2961 if test -x "$DEFAULT_DSYMUTIL"; then
2962 gcc_cv_dsymutil="$DEFAULT_DSYMUTIL"
2963 elif test -x dsymutil$build_exeext; then
2964 gcc_cv_dsymutil=./dsymutil$build_exeext
2965 elif ( set dummy $DSYMUTIL_FOR_TARGET; test -x $[2] ); then
2966 gcc_cv_dsymutil=$DSYMUTIL_FOR_TARGET
2967 elif ( set dummy $DSYMUTIL; test -x $[2] ); then
2968 gcc_cv_dsymutil=$DSYMUTIL
2970 AC_PATH_PROG(gcc_cv_dsymutil, $DSYMUTIL_FOR_TARGET)
2973 ORIGINAL_DSYMUTIL_FOR_TARGET=$gcc_cv_dsymutil
2974 AC_SUBST(ORIGINAL_DSYMUTIL_FOR_TARGET)
2975 case "$ORIGINAL_DSYMUTIL_FOR_TARGET" in
2976 ./dsymutil | ./dsymutil$build_exeext) ;;
2977 *) AC_CONFIG_FILES(dsymutil:exec-tool.in, [chmod +x dsymutil]) ;;
2980 # Figure out what assembler alignment features are present.
2981 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,,
2984 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2985 [Define if your assembler supports .balign and .p2align.])])
2987 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,,
2989 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2990 [Define if your assembler supports specifying the maximum number
2991 of bytes to skip when using the GAS .p2align command.])])
2993 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,,
2995 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2996 [Define if your assembler supports .literal16.])])
2998 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,,
2999 [conftest_label1: .word 0
3001 conftest_label2: .word 0
3003 [if test x$gcc_cv_nm != x; then
3004 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
3005 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
3006 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
3008 else gcc_cv_as_subsection_m1=yes
3010 rm -f conftest.nm1 conftest.nm2
3012 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
3013 [Define if your assembler supports .subsection and .subsection -1 starts
3014 emitting at the beginning of your section.])])
3016 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,,
3018 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
3020 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,,
3021 [ .weakref foobar, barfnot],,
3022 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
3024 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,,
3026 .NSUBSPA $CODE$,COMDAT],,
3027 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
3029 # .hidden needs to be supported in both the assembler and the linker,
3030 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
3031 # This is irritatingly difficult to feature test for; we have to check the
3032 # date string after the version number. If we've got an in-tree
3033 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
3035 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
3038 conftest_s=' .globl foobar,hidden'
3041 conftest_s=' .hidden foobar
3045 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,, [$conftest_s])
3048 # Darwin as has some visibility support, though with a different syntax.
3049 gcc_cv_as_hidden=yes
3053 # gnu_indirect_function type is an extension proposed at
3054 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
3055 # selection of function implementation
3056 AC_ARG_ENABLE(gnu-indirect-function,
3057 [AS_HELP_STRING([--enable-gnu-indirect-function],
3058 [enable the use of the @gnu_indirect_function to glibc systems])],
3059 [case $enable_gnu_indirect_function in
3061 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
3062 Valid choices are 'yes' and 'no'.]) ;;
3064 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
3068 AC_MSG_CHECKING(linker ifunc IRELATIVE support)
3069 cat > conftest.s <<EOF
3071 .type foo_resolver, @function
3074 .size foo_resolver, .-foo_resolver
3077 .type foo, %gnu_indirect_function
3078 .set foo, foo_resolver
3081 .type bar, @function
3087 if test x$gcc_cv_as != x \
3088 && test x$gcc_cv_ld != x \
3089 && test x$gcc_cv_readelf != x \
3090 && $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
3091 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1 \
3092 && $gcc_cv_readelf --relocs --wide conftest \
3093 | grep R_RISCV_IRELATIVE > /dev/null 2>&1; then
3094 enable_gnu_indirect_function=yes
3096 rm -f conftest conftest.o conftest.s
3097 AC_MSG_RESULT($enable_gnu_indirect_function)
3101 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
3102 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
3103 [Define if your system supports gnu indirect functions.])
3107 if test $in_tree_ld != yes ; then
3108 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
3109 if echo "$ld_ver" | grep GNU > /dev/null; then
3110 if test x"$ld_is_gold" = xyes; then
3111 # GNU gold --version looks like this:
3113 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
3115 # We extract the binutils version which is more familiar and specific
3116 # than the gold version.
3117 ld_vers=`echo $ld_ver | sed -n \
3118 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3120 # GNU ld --version looks like this:
3122 # GNU ld (GNU Binutils) 2.21.51.20110225
3123 ld_vers=`echo $ld_ver | sed -n \
3124 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3126 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)\(-*\)\([01][0-9]\)\2\([0-3][0-9]\).*$,\1\3\4,p'`
3127 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3128 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3129 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
3133 # Solaris 2 ld -V output looks like this for a regular version:
3135 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
3137 # but test versions add stuff at the end:
3139 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
3141 # ld and ld.so.1 are guaranteed to be updated in lockstep, so ld version
3142 # numbers can be used in ld.so.1 feature checks even if a different
3143 # linker is configured.
3144 ld_ver=`$gcc_cv_ld -V 2>&1`
3145 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
3146 ld_vers=`echo $ld_ver | sed -n \
3147 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
3148 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3149 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3157 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
3158 [[if test $in_tree_ld = yes ; then
3160 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
3161 && test $in_tree_ld_is_elf = yes; then
3162 gcc_cv_ld_hidden=yes
3165 gcc_cv_ld_hidden=yes
3166 if test x"$ld_is_gold" = xyes; then
3168 elif test x"$ld_is_mold" = xyes; then
3170 elif echo "$ld_ver" | grep GNU > /dev/null; then
3171 if test 0"$ld_date" -lt 20020404; then
3172 if test -n "$ld_date"; then
3173 # If there was date string, but was earlier than 2002-04-04, fail
3175 elif test -z "$ld_vers"; then
3176 # If there was no date string nor ld version number, something is wrong
3179 test -z "$ld_vers_patch" && ld_vers_patch=0
3180 if test "$ld_vers_major" -lt 2; then
3182 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
3183 gcc_cv_ld_hidden="no"
3184 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
3192 gcc_cv_ld_hidden=yes
3195 # Darwin ld has some visibility support.
3196 gcc_cv_ld_hidden=yes
3198 hppa64*-*-hpux* | ia64*-*-hpux*)
3199 gcc_cv_ld_hidden=yes
3202 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
3203 # .symbolic was only added in Solaris 9 12/02.
3204 gcc_cv_ld_hidden=yes
3212 libgcc_visibility=no
3213 AC_SUBST(libgcc_visibility)
3214 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
3215 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
3216 libgcc_visibility=yes
3217 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
3218 [Define if your assembler and linker support .hidden.])
3221 AC_MSG_CHECKING(linker read-only and read-write section mixing)
3222 gcc_cv_ld_ro_rw_mix=unknown
3223 if test $in_tree_ld = yes ; then
3224 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
3225 && test $in_tree_ld_is_elf = yes; then
3226 gcc_cv_ld_ro_rw_mix=read-write
3228 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3229 echo '.section myfoosect, "a"' > conftest1.s
3230 echo '.section myfoosect, "aw"' > conftest2.s
3231 echo '.byte 1' >> conftest2.s
3232 echo '.section myfoosect, "a"' > conftest3.s
3233 echo '.byte 0' >> conftest3.s
3234 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
3235 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
3236 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1; then
3237 if $gcc_cv_ld -shared -o conftest1.so conftest1.o \
3238 conftest2.o conftest3.o > /dev/null 2>&1 \
3239 || $gcc_cv_ld -r -o conftest1.so conftest1.o \
3240 conftest2.o conftest3.o > /dev/null 2>&1; then
3241 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
3242 | sed -e '/myfoosect/!d' -e N`
3243 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
3244 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
3245 gcc_cv_ld_ro_rw_mix=read-only
3247 gcc_cv_ld_ro_rw_mix=read-write
3253 rm -f conftest.* conftest[123].*
3256 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
3257 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
3258 [Define if your linker links a mix of read-only
3259 and read-write sections into a read-write section.])
3261 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
3263 gcc_AC_INITFINI_ARRAY
3265 # Some assemblers (GNU as for LoongArch) generates relocations for
3266 # leb128 symbol arithmetic for relaxation, we need to disable relaxation
3267 # probing leb128 support then.
3270 gcc_GAS_CHECK_FEATURE([-mno-relax support],
3271 gcc_cv_as_mno_relax,[-mno-relax],[.text],,
3272 [check_leb128_asflags=-mno-relax])
3275 check_leb128_asflags=
3279 # Check if we have .[us]leb128, and support symbol arithmetic with it.
3280 # Older versions of GAS and some non-GNU assemblers, have a bugs handling
3281 # these directives, even when they appear to accept them.
3282 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
3283 [$check_leb128_asflags],
3290 .uleb128 0x8000000000000000
3293 if test "x$gcc_cv_objdump" != x; then
3294 if $gcc_cv_objdump -s conftest.o 2>/dev/null \
3295 | grep '04800a8e 78808080 80808080 808001' >/dev/null; then
3296 gcc_cv_as_leb128=yes
3298 elif test "x$gcc_cv_otool" != x; then
3299 if $gcc_cv_otool -d conftest.o 2>/dev/null \
3300 | grep '04 80 0a 8e 78 80 80 80 80 80 80 80 80 80 01' >/dev/null; then
3301 gcc_cv_as_leb128=yes
3304 # play safe, assume the assembler is broken.
3308 [AC_DEFINE(HAVE_AS_LEB128, 1,
3309 [Define if your assembler supports .sleb128 and .uleb128.])],
3310 [AC_DEFINE(HAVE_AS_LEB128, 0,
3311 [Define if your assembler supports .sleb128 and .uleb128.])])
3313 # Determine if an .eh_frame section is read-only.
3314 gcc_fn_eh_frame_ro () {
3315 $gcc_cv_as $1 -o conftest.o conftest.s > /dev/null 2>&1 && \
3316 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
3317 sed -e '/.eh_frame/!d' -e N | grep READONLY > /dev/null
3320 # Check if we have assembler support for unwind directives.
3321 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,,
3327 .cfi_escape 1, 2, 3, 4, 5
3331 # If the linker used on Solaris (like Sun ld) isn't capable of merging
3332 # read-only and read-write sections, we need to make sure that the
3333 # assembler used emits read-write .eh_frame sections.
3334 if test "x$gcc_cv_ld_ro_rw_mix" = xread-write; then
3335 gcc_cv_as_cfi_directive=yes
3336 elif test "x$gcc_cv_objdump" = x; then
3337 # No objdump, err on the side of caution.
3338 gcc_cv_as_cfi_directive=no
3340 if test x$gas = xyes; then
3348 sparc*-*-solaris2.*)
3349 # On Solaris/SPARC, .eh_frame sections should always be read-write.
3350 if gcc_fn_eh_frame_ro $as_32_opt \
3351 || gcc_fn_eh_frame_ro $as_64_opt; then
3352 gcc_cv_as_cfi_directive=no
3354 gcc_cv_as_cfi_directive=yes
3357 i?86-*-solaris2.* | x86_64-*-solaris2.*)
3358 # On Solaris/x86, make sure that GCC and assembler agree on using
3359 # read-only .eh_frame sections for 64-bit.
3360 if gcc_fn_eh_frame_ro $as_32_opt; then
3361 gcc_cv_as_cfi_directive=no
3362 elif gcc_fn_eh_frame_ro $as_64_opt; then
3363 gcc_cv_as_cfi_directive=yes
3365 gcc_cv_as_cfi_directive=no
3372 gcc_cv_as_cfi_directive=yes
3375 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
3376 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,,
3379 .cfi_adjust_cfa_offset 64
3381 .cfi_adjust_cfa_offset 128
3384 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
3385 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
3386 gcc_cv_as_cfi_advance_working=yes
3390 # no objdump, err on the side of caution
3391 gcc_cv_as_cfi_advance_working=no
3393 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
3394 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
3395 [`if test $gcc_cv_as_cfi_directive = yes \
3396 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
3397 [Define 0/1 if your assembler supports CFI directives.])
3399 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
3400 gcc_GAS_CHECK_FEATURE([cfi personality directive],
3401 gcc_cv_as_cfi_personality_directive,,
3404 .cfi_personality 0, symbol
3406 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
3407 [`if test $gcc_cv_as_cfi_personality_directive = yes; then echo 1; else echo 0; fi`],
3408 [Define 0/1 if your assembler supports .cfi_personality.])
3410 gcc_GAS_CHECK_FEATURE([cfi sections directive],
3411 gcc_cv_as_cfi_sections_directive,,
3413 .cfi_sections .debug_frame, .eh_frame
3417 win32 | pe | cygwin* | mingw32*)
3418 # Need to check that we generated the correct relocation for the
3419 # .debug_frame section. This was fixed for binutils 2.21.
3420 gcc_cv_as_cfi_sections_directive=no
3421 if test "x$gcc_cv_objdump" != x; then
3422 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
3423 grep -i secrel > /dev/null; then
3424 gcc_cv_as_cfi_sections_directive=yes
3429 gcc_cv_as_cfi_sections_directive=yes
3432 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
3433 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
3434 [`if test $gcc_cv_as_cfi_sections_directive = yes; then echo 1; else echo 0; fi`],
3435 [Define 0/1 if your assembler supports .cfi_sections.])
3437 # GAS versions up to and including 2.11.0 may mis-optimize
3439 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,,
3446 .section .eh_frame,"aw",@progbits
3448 .4byte .LECIE1-.LSCIE1
3462 .4byte .LEFDE1-.LASFDE1
3464 .4byte .LASFDE1-__FRAME_BEGIN__
3472 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
3473 cat > conftest.lit <<EOF
3474 0000 10000000 00000000 017a0001 781a0004 .........z..x...
3475 0010 01000000 12000000 18000000 00000000 ................
3476 0020 08000000 04080000 0044 .........D @&t@
3478 cat > conftest.big <<EOF
3479 0000 00000010 00000000 017a0001 781a0004 .........z..x...
3480 0010 00000001 00000012 00000018 00000000 ................
3481 0020 00000008 04000000 0844 .........D @&t@
3483 # If the assembler didn't choke, and we can objdump,
3484 # and we got the correct data, then succeed.
3485 # The text in the here-document typically retains its unix-style line
3486 # endings, while the output of objdump will use host line endings.
3487 # Therefore, use diff -b for the comparisons.
3488 if test x$gcc_cv_objdump != x \
3489 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
3490 | tail -3 > conftest.got \
3491 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
3492 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
3494 gcc_cv_as_eh_frame=yes
3495 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
3496 gcc_cv_as_eh_frame=buggy
3498 # Uh oh, what do we do now?
3499 gcc_cv_as_eh_frame=no
3502 if test $gcc_cv_as_eh_frame = buggy; then
3503 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
3504 [Define if your assembler mis-optimizes .eh_frame data.])
3507 # Test if the assembler supports the section flag 'e' or #exclude for
3508 # specifying an excluded section.
3509 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_e,
3513 if test $gcc_cv_as_section_exclude_e = no; then
3515 # Solaris as uses #exclude instead.
3519 conftest_s='.section "foo1", #exclude'
3521 i?86-*-solaris2* | x86_64-*-solaris2*)
3522 conftest_s='.section foo1, #exclude'
3527 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_hash,,
3531 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3532 [`if test $gcc_cv_as_section_exclude_e = yes || test $gcc_cv_as_section_exclude_hash = yes; then echo 1; else echo 0; fi`],
3533 [Define if your assembler supports specifying the exclude section flag.])
3535 # Test if the assembler supports the section flag 'R' for specifying
3536 # section with SHF_GNU_RETAIN.
3538 # Solaris may use GNU assembler with Solairs ld. Even if GNU
3539 # assembler supports the section flag 'R', it doesn't mean that
3540 # Solairs ld supports it.
3542 gcc_cv_as_shf_gnu_retain=no
3545 gcc_GAS_CHECK_FEATURE([section 'R' flag], gcc_cv_as_shf_gnu_retain,
3547 [.section .foo,"awR",%progbits
3551 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_GNU_RETAIN,
3552 [`if test $gcc_cv_as_shf_gnu_retain = yes; then echo 1; else echo 0; fi`],
3553 [Define 0/1 if your assembler supports marking sections with SHF_GNU_RETAIN flag.])
3555 # Test if the assembler supports the section flag 'o' for specifying
3556 # section with link-order.
3558 # Solaris may use GNU assembler with Solairs ld. Even if GNU
3559 # assembler supports the section flag 'o', it doesn't mean that
3560 # Solairs ld supports it.
3562 gcc_cv_as_section_link_order=no
3565 gcc_GAS_CHECK_FEATURE([section 'o' flag], gcc_cv_as_section_link_order,
3569 .section __patchable_function_entries,"awo",%progbits,.foo
3573 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_LINK_ORDER,
3574 [`if test $gcc_cv_as_section_link_order = yes; then echo 1; else echo 0; fi`],
3575 [Define 0/1 if your assembler supports 'o' flag in .section directive.])
3577 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
3579 [.section .rodata.str, "aMS", @progbits, 1])
3580 if test $gcc_cv_as_shf_merge = no; then
3581 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
3583 [.section .rodata.str, "aMS", %progbits, 1])
3585 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
3586 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
3587 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
3589 gcc_cv_ld_aligned_shf_merge=yes
3591 # SHF_MERGE support is broken in Solaris ld up to Solaris 11.3/SPARC for
3593 sparc*-*-solaris2.11*)
3594 if test x"$gnu_ld" = xno \
3595 && test "$ld_vers_major" -lt 2 && test "$ld_vers_minor" -lt 3159; then
3596 gcc_cv_ld_aligned_shf_merge=no
3600 AC_DEFINE_UNQUOTED(HAVE_LD_ALIGNED_SHF_MERGE,
3601 [`if test $gcc_cv_ld_aligned_shf_merge = yes; then echo 1; else echo 0; fi`],
3602 [Define 0/1 if your linker supports the SHF_MERGE flag with section alignment > 1.])
3604 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
3605 gcc_cv_as_comdat_group,
3607 [.section .text,"axG",@progbits,.foo,comdat])
3608 if test $gcc_cv_as_comdat_group = yes; then
3609 gcc_cv_as_comdat_group_percent=no
3610 gcc_cv_as_comdat_group_group=no
3612 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
3613 gcc_cv_as_comdat_group_percent,
3615 [.section .text,"axG",%progbits,.foo,comdat])
3616 if test $gcc_cv_as_comdat_group_percent = yes; then
3617 gcc_cv_as_comdat_group_group=no
3620 # Sun as uses a completely different syntax.
3625 .group foo,".text%foo",#comdat
3626 .section ".text%foo", #alloc,#execinstr,#progbits
3631 i?86-*-solaris2* | x86_64-*-solaris2*)
3633 .group foo,.text%foo,#comdat
3634 .section .text%foo, "ax", @progbits
3640 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
3641 gcc_cv_as_comdat_group_group,
3645 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
3646 gcc_cv_as_comdat_group_group=no
3650 if test x"$ld_is_gold" = xyes; then
3652 elif test x"$ld_is_mold" = xyes; then
3654 elif test $in_tree_ld = yes ; then
3656 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3657 && test $in_tree_ld_is_elf = yes; then
3660 elif echo "$ld_ver" | grep GNU > /dev/null; then
3662 if test 0"$ld_date" -lt 20050308; then
3663 if test -n "$ld_date"; then
3664 # If there was date string, but was earlier than 2005-03-08, fail
3666 elif test "$ld_vers_major" -lt 2; then
3668 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
3675 *-*-solaris2.1[1-9]*)
3677 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
3678 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
3681 # If using Sun as for COMDAT group as emitted by GCC, one needs at
3682 # least ld version 1.2267.
3683 if test "$ld_vers_major" -gt 1; then
3685 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
3687 elif test "$ld_vers_minor" -ge 2267; then
3692 # Assume linkers other than GNU ld don't support COMDAT group.
3698 # Allow overriding the automatic COMDAT group tests above.
3699 AC_ARG_ENABLE(comdat,
3700 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
3701 [comdat_group="$enable_comdat"])
3702 if test $comdat_group = no; then
3703 gcc_cv_as_comdat_group=no
3704 gcc_cv_as_comdat_group_percent=no
3705 gcc_cv_as_comdat_group_group=no
3707 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
3708 [`if test $gcc_cv_as_comdat_group = yes \
3709 || test $gcc_cv_as_comdat_group_percent = yes \
3710 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
3711 [Define 0/1 if your assembler and linker support COMDAT groups.])
3713 # Restrict this test to Solaris/x86: other targets define this statically.
3715 i?86-*-solaris2* | x86_64-*-solaris2*)
3716 AC_MSG_CHECKING(support for hidden thunks in linkonce sections)
3717 if test $in_tree_ld = yes || echo "$ld_ver" | grep GNU > /dev/null; then
3721 # Full support for hidden thunks in linkonce sections only appeared in
3722 # Solaris 11/OpenSolaris.
3723 *-*-solaris2.1[[1-9]]*)
3731 AC_MSG_RESULT($hidden_linkonce)
3732 AC_DEFINE_UNQUOTED(USE_HIDDEN_LINKONCE,
3733 [`if test $hidden_linkonce = yes; then echo 1; else echo 0; fi`],
3734 [Define 0/1 if your linker supports hidden thunks in linkonce sections.])
3738 gcc_GAS_CHECK_FEATURE([line table is_stmt support],
3742 .loc 1 1 0 is_stmt 1],,
3743 [AC_DEFINE(HAVE_GAS_LOC_STMT, 1,
3744 [Define if your assembler supports the .loc is_stmt sub-directive.])])
3746 gcc_GAS_CHECK_FEATURE([line table discriminator support],
3747 gcc_cv_as_discriminator,,
3750 .loc 1 1 0 discriminator 1],,
3751 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
3752 [Define if your assembler supports the .loc discriminator sub-directive.])])
3754 # Catch the newlib flag of the same name so we can gate GCC features on it.
3755 AC_ARG_ENABLE(newlib-nano-formatted-io,
3756 [AS_HELP_STRING([--enable-newlib-nano-formatted-io], [Use nano version
3758 [case "${enableval}" in
3762 AC_MSG_ERROR([unknown newlib-nano-formatted-io setting $enableval])
3766 # Thread-local storage - the check is heavily parameterized.
3773 .section ".tdata","awT",@progbits
3776 ldq $27,__tls_get_addr($29) !literal!1
3777 lda $16,foo($29) !tlsgd!1
3778 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
3779 ldq $27,__tls_get_addr($29) !literal!2
3780 lda $16,foo($29) !tlsldm!2
3781 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
3782 ldq $1,foo($29) !gotdtprel
3783 ldah $2,foo($29) !dtprelhi
3784 lda $3,foo($2) !dtprello
3785 lda $4,foo($29) !dtprel
3786 ldq $1,foo($29) !gottprel
3787 ldah $2,foo($29) !tprelhi
3788 lda $3,foo($2) !tprello
3789 lda $4,foo($29) !tprel'
3790 tls_as_opt=--fatal-warnings
3794 add_s r0,r0, @foo@tpoff'
3796 cris-*-*|crisv32-*-*)
3798 .section ".tdata","awT",@progbits
3803 tls_as_opt=--fatal-warnings
3807 .section ".tdata","awT",@progbits
3817 .section ".tdata","awT",@progbits
3821 addil LT%foo-$tls_gdidx$,gp
3822 ldo RT%foo-$tls_gdidx$(%r1),%arg0
3825 addil LT%foo-$tls_ldidx$,gp
3827 ldo RT%foo-$tls_ldidx$(%r1),%arg0
3828 addil LR%foo-$tls_dtpoff$,%ret0
3829 ldo RR%foo-$tls_dtpoff$(%r1),%t1
3831 addil LT%foo-$tls_ieoff$,gp
3832 ldw RT%foo-$tls_ieoff$(%r1),%t2
3835 addil LR%foo-$tls_leoff$,%t1
3836 ldo RR%foo-$tls_leoff$(%r1),%t2'
3837 tls_as_opt=--fatal-warnings
3841 .section ".tdata","awT",%progbits
3850 i[34567]86-*-* | x86_64-*-*)
3852 i[34567]86-*-solaris2.* | x86_64-*-solaris2.*)
3859 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3861 .section .tdata,"awt",@progbits'
3864 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
3865 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
3869 .section ".tdata","awT",@progbits'
3871 tls_as_opt="--fatal-warnings"
3875 if test x$on_solaris = xyes; then
3877 yes) tls_as_opt="$tls_as_opt --32" ;;
3880 conftest_s="$conftest_s
3884 leal foo@tlsgd(,%ebx,1), %eax
3885 leal foo@tlsldm(%ebx), %eax
3886 leal foo@dtpoff(%eax), %edx
3887 movl foo@gottpoff(%ebx), %eax
3888 subl foo@gottpoff(%ebx), %eax
3889 addl foo@gotntpoff(%ebx), %eax
3890 movl foo@indntpoff, %eax
3891 movl \$foo@tpoff, %eax
3892 subl \$foo@tpoff, %eax
3893 leal foo@ntpoff(%ecx), %eax"
3896 if test x$on_solaris = xyes; then
3898 yes) tls_as_opt="$tls_as_opt --64" ;;
3899 no) tls_as_opt="$tls_as_opt -xarch=amd64" ;;
3902 conftest_s="$conftest_s
3906 leaq foo@tlsgd(%rip), %rdi
3907 leaq foo@tlsld(%rip), %rdi
3908 leaq foo@dtpoff(%rax), %rdx
3909 movq foo@gottpoff(%rip), %rax
3910 movq \$foo@tpoff, %rax"
3916 .section ".tdata","awT",@progbits
3919 addl r16 = @ltoff(@dtpmod(foo#)), gp
3920 addl r17 = @ltoff(@dtprel(foo#)), gp
3921 addl r18 = @ltoff(@tprel(foo#)), gp
3922 addl r19 = @dtprel(foo#), gp
3923 adds r21 = @dtprel(foo#), r13
3924 movl r23 = @dtprel(foo#)
3925 addl r20 = @tprel(foo#), gp
3926 adds r22 = @tprel(foo#), r13
3927 movl r24 = @tprel(foo#)'
3928 tls_as_opt=--fatal-warnings
3932 .section .tdata,"awT",@progbits
3939 tls_as_opt='--fatal-warnings'
3943 .section .tdata,"awT",@progbits
3947 addik r5,r20,x@TLSGD
3948 addik r5,r20,x@TLSLDM'
3949 tls_as_opt='--fatal-warnings'
3953 .section .tdata,"awT",@progbits
3957 addiu $4, $28, %tlsgd(x)
3958 addiu $4, $28, %tlsldm(x)
3959 lui $4, %dtprel_hi(x)
3960 addiu $4, $4, %dtprel_lo(x)
3961 lw $4, %gottprel(x)($28)
3962 lui $4, %tprel_hi(x)
3963 addiu $4, $4, %tprel_lo(x)'
3964 tls_as_opt='-32 --fatal-warnings'
3968 .section .tdata,"awT",@progbits
3973 move.l x@TLSGD(%a5),%a0
3974 move.l x@TLSLDM(%a5),%a0
3975 move.l x@TLSLDO(%a5),%a0
3976 move.l x@TLSIE(%a5),%a0
3977 move.l x@TLSLE(%a5),%a0'
3978 tls_as_opt='--fatal-warnings'
3982 .section ".tdata","awT",@progbits'
3983 tls_as_opt="--fatal-warnings"
3987 .section ".tdata","awT",%progbits
3991 add x0, x0, #:tlsgd_lo12:x
3994 tls_as_opt='--fatal-warnings'
3998 .section ".tdata","awT",@progbits
4001 l.movhi r3, tpoffha(foo)
4003 l.lwz r4, tpofflo(foo)(r3)'
4004 tls_as_opt=--fatal-warnings
4008 .extern __get_tpointer
4024 .section ".tdata","awT",@progbits
4032 addi 3,2,ld0@got@tlsgd
4038 addi 3,2,x1@got@tlsld
4044 addis 9,3,x2@dtprel@ha
4045 addi 9,9,x2@dtprel@l
4048 ld 9,x3@got@dtprel(2)
4052 tls_as_opt="-a64 --fatal-warnings"
4056 .section ".tdata","awT",@progbits
4064 addi 3,31,ld0@got@tlsgd
4066 addi 3,31,x1@got@tlsld
4069 addis 9,3,x2@dtprel@ha
4070 addi 9,9,x2@dtprel@l
4071 lwz 9,x3@got@tprel(31)
4074 addis 9,2,x2@tprel@ha
4075 addi 9,9,x2@tprel@l'
4076 tls_as_opt="-a32 --fatal-warnings"
4080 .section .tdata,"awT",@progbits
4084 call __tls_get_addr'
4085 tls_as_opt='--fatal-warnings'
4089 .section ".tdata","awT",@progbits
4098 l %r1,foo@GOTNTPOFF(%r12)
4099 l %r1,0(%r1):tls_load:foo
4100 bas %r14,0(%r1,%r13):tls_gdcall:foo
4101 bas %r14,0(%r1,%r13):tls_ldcall:foo'
4102 tls_as_opt="-m31 --fatal-warnings"
4106 .section ".tdata","awT",@progbits
4114 lg %r1,foo@GOTNTPOFF(%r12)
4115 larl %r1,foo@INDNTPOFF
4116 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
4117 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
4118 tls_as_opt="-m64 -Aesame --fatal-warnings"
4120 sh-*-* | sh[123456789lbe]*-*-*)
4122 .section ".tdata","awT",@progbits
4130 tls_as_opt=--fatal-warnings
4134 sparc*-sun-solaris2.*)
4141 if test x$on_solaris = xyes && test x$gas_flag = xno; then
4143 .section ".tdata",#alloc,#write,#tls'
4146 .section ".tdata","awT",@progbits'
4147 tls_as_opt="-32 --fatal-warnings"
4149 conftest_s="$conftest_s
4152 sethi %tgd_hi22(foo), %o0
4153 add %o0, %tgd_lo10(foo), %o1
4154 add %l7, %o1, %o0, %tgd_add(foo)
4155 call __tls_get_addr, %tgd_call(foo)
4156 sethi %tldm_hi22(foo), %l1
4157 add %l1, %tldm_lo10(foo), %l2
4158 add %l7, %l2, %o0, %tldm_add(foo)
4159 call __tls_get_addr, %tldm_call(foo)
4160 sethi %tldo_hix22(foo), %l3
4161 xor %l3, %tldo_lox10(foo), %l4
4162 add %o0, %l4, %l5, %tldo_add(foo)
4163 sethi %tie_hi22(foo), %o3
4164 add %o3, %tie_lo10(foo), %o3
4165 ld [%l7 + %o3], %o2, %tie_ld(foo)
4166 add %g7, %o2, %o4, %tie_add(foo)
4167 sethi %tle_hix22(foo), %l1
4168 xor %l1, %tle_lox10(foo), %o5
4169 ld [%g7 + %o5], %o1"
4173 .section ".tdata","awT",@progbits
4176 movi a8, foo@TLSFUNC
4177 movi a10, foo@TLSARG
4178 callx8.tls a8, foo@TLSCALL'
4183 if test "x$enable_tls" = xno ; then
4184 : # TLS explicitly disabled.
4185 elif test "x$enable_tls" = xyes ; then
4186 set_have_as_tls=yes # TLS explicitly enabled.
4187 elif test -z "$conftest_s"; then
4188 : # If we don't have a check, assume no support.
4190 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
4191 [$tls_as_opt], [$conftest_s],,
4192 [set_have_as_tls=yes])
4194 if test $set_have_as_tls = yes ; then
4195 AC_DEFINE(HAVE_AS_TLS, 1,
4196 [Define if your assembler and linker support thread-local storage.])
4199 # Target-specific assembler checks.
4201 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
4202 gcc_cv_ld_static_dynamic=no
4203 gcc_cv_ld_static_option='-Bstatic'
4204 gcc_cv_ld_dynamic_option='-Bdynamic'
4205 if test $in_tree_ld = yes ; then
4206 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
4207 gcc_cv_ld_static_dynamic=yes
4209 elif test x$gcc_cv_ld != x; then
4210 # Check if linker supports -Bstatic/-Bdynamic option
4211 if $gcc_cv_ld --help 2>&1 | grep -- -Bstatic > /dev/null \
4212 && $gcc_cv_ld --help 2>&1 | grep -- -Bdynamic > /dev/null; then
4213 gcc_cv_ld_static_dynamic=yes
4216 # AIX ld uses -b flags
4217 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
4218 gcc_cv_ld_static_dynamic=yes
4219 gcc_cv_ld_static_option="-bstatic"
4220 gcc_cv_ld_dynamic_option="-bdynamic"
4222 # HP-UX ld uses -a flags to select between shared and archive.
4224 if test x"$gnu_ld" = xno; then
4225 gcc_cv_ld_static_dynamic=yes
4226 gcc_cv_ld_static_option="-aarchive_shared"
4227 gcc_cv_ld_dynamic_option="-adefault"
4230 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
4232 gcc_cv_ld_static_dynamic=yes
4237 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
4238 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
4239 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
4240 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
4241 [Define to the linker option to disable use of shared objects.])
4242 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
4243 [Define to the linker option to enable use of shared objects.])
4245 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
4247 AC_MSG_CHECKING(linker --version-script option)
4248 gcc_cv_ld_version_script=no
4249 ld_version_script_option=''
4250 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
4251 gcc_cv_ld_version_script=yes
4252 ld_version_script_option='--version-script'
4253 elif test x$gcc_cv_ld != x; then
4255 # Solaris 2 ld always supports -M. It also supports a subset of
4256 # --version-script since Solaris 11.4, but requires
4257 # -z gnu-version-script-compat to activate.
4259 gcc_cv_ld_version_script=yes
4260 ld_version_script_option='-M'
4264 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
4265 AC_MSG_RESULT($gcc_cv_ld_version_script)
4266 AC_SUBST(ld_version_script_option)
4268 AC_MSG_CHECKING(linker soname option)
4270 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
4271 gcc_cv_ld_soname=yes
4272 ld_soname_option='-soname'
4273 elif test x$gcc_cv_ld != x; then
4276 gcc_cv_ld_soname=yes
4277 ld_soname_option='-install_name'
4279 # Solaris 2 ld always supports -h. It also supports --soname for GNU
4280 # ld compatiblity since some Solaris 10 update.
4282 gcc_cv_ld_soname=yes
4283 ld_soname_option='-h'
4287 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
4288 AC_MSG_RESULT($gcc_cv_ld_soname)
4289 AC_SUBST(ld_soname_option)
4291 if test x"$demangler_in_ld" = xyes; then
4292 AC_MSG_CHECKING(linker --demangle support)
4293 gcc_cv_ld_demangle=no
4294 if test $in_tree_ld = yes; then
4295 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
4296 gcc_cv_ld_demangle=yes
4298 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
4299 # Check if the GNU linker supports --demangle option
4300 if $gcc_cv_ld --help 2>&1 | grep no-demangle > /dev/null; then
4301 gcc_cv_ld_demangle=yes
4304 if test x"$gcc_cv_ld_demangle" = xyes; then
4305 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
4306 [Define if your linker supports --demangle option.])
4308 AC_MSG_RESULT($gcc_cv_ld_demangle)
4311 AC_MSG_CHECKING(linker plugin support)
4313 if test -f liblto_plugin.la; then
4314 save_ld_ver="$ld_ver"
4315 save_ld_vers_major="$ld_vers_major"
4316 save_ld_vers_minor="$ld_vers_minor"
4317 save_ld_is_gold="$ld_is_gold"
4321 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
4323 # FIXME: ld_is_gold?
4324 ld_vers_major="$gcc_cv_gld_major_version"
4325 ld_vers_minor="$gcc_cv_gld_minor_version"
4327 # Determine plugin linker version.
4328 # FIXME: Partial duplicate from above, generalize.
4330 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
4331 if echo "$ld_ver" | grep GNU > /dev/null; then
4332 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
4334 ld_vers=`echo $ld_ver | sed -n \
4335 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
4337 ld_vers=`echo $ld_ver | sed -n \
4338 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
4340 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
4341 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
4346 # Determine plugin support.
4347 if echo "$ld_ver" | grep GNU > /dev/null; then
4348 # Require GNU ld or gold 2.21+ for plugin support by default.
4349 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
4351 elif test "$ld_is_mold" = yes; then
4353 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
4354 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
4359 ld_ver="$save_ld_ver"
4360 ld_vers_major="$save_ld_vers_major"
4361 ld_vers_minor="$save_ld_vers_minor"
4362 ld_is_gold="$save_ld_is_gold"
4364 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
4365 [Define to the level of your linker's plugin support.])
4366 AC_MSG_RESULT($gcc_cv_lto_plugin)
4368 # Target OS-specific assembler checks.
4370 case "$target_os" in
4372 gcc_GAS_CHECK_FEATURE([-mmacosx-version-min option],
4373 gcc_cv_as_mmacosx_version_min,
4374 [-mmacosx-version-min=10.1], [.text],,
4375 [AC_DEFINE(HAVE_AS_MMACOSX_VERSION_MIN_OPTION, 1,
4376 [Define if your macOS assembler supports the -mmacos-version-min option.])])
4380 # Target CPU-specific assembler checks.
4384 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,
4385 [-mabi=lp64], [.text],,,)
4386 if test x$gcc_cv_as_aarch64_mabi = xyes; then
4387 AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
4388 [Define if your assembler supports the -mabi option.])
4390 if test x$with_abi = xilp32; then
4391 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
4392 Upgrade the Assembler.])
4394 if test x"$with_multilib_list" = xdefault; then
4395 TM_MULTILIB_CONFIG=lp64
4397 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
4398 for aarch64_multilib in ${aarch64_multilibs}; do
4399 case ${aarch64_multilib} in
4401 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
4402 Upgrade the Assembler.])
4410 # Check if we have binutils support for relocations types needed by -fpic
4411 gcc_GAS_CHECK_FEATURE([-fpic relocs], gcc_cv_as_aarch64_picreloc,,
4414 ldr x0, [[x2, #:gotpage_lo15:globalsym]]
4415 ],,[AC_DEFINE(HAVE_AS_SMALL_PIC_RELOCS, 1,
4416 [Define if your assembler supports relocs needed by -fpic.])])
4417 # Enable Branch Target Identification Mechanism and Return Address
4418 # Signing by default.
4419 AC_ARG_ENABLE(standard-branch-protection,
4421 AS_HELP_STRING([--enable-standard-branch-protection],
4422 [enable Branch Target Identification Mechanism and Return Address Signing by default for AArch64])
4423 AS_HELP_STRING([--disable-standard-branch-protection],
4424 [disable Branch Target Identification Mechanism and Return Address Signing by default for AArch64])
4429 tm_defines="${tm_defines} TARGET_ENABLE_BTI=1 TARGET_ENABLE_PAC_RET=1"
4434 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-standard-branch-protection.\
4435 Valid choices are 'yes' and 'no'.])
4440 # Enable default workaround for AArch64 Cortex-A53 erratum 835769.
4441 AC_ARG_ENABLE(fix-cortex-a53-835769,
4443 AS_HELP_STRING([--enable-fix-cortex-a53-835769],
4444 [enable workaround for AArch64 Cortex-A53 erratum 835769 by default])
4445 AS_HELP_STRING([--disable-fix-cortex-a53-835769],
4446 [disable workaround for AArch64 Cortex-A53 erratum 835769 by default])
4451 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1"
4456 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\
4457 Valid choices are 'yes' and 'no'.])
4463 # Enable default workaround for AArch64 Cortex-A53 erratum 843419.
4464 AC_ARG_ENABLE(fix-cortex-a53-843419,
4466 AS_HELP_STRING([--enable-fix-cortex-a53-843419],
4467 [enable workaround for AArch64 Cortex-A53 erratum 843419 by default])
4468 AS_HELP_STRING([--disable-fix-cortex-a53-843419],
4469 [disable workaround for AArch64 Cortex-A53 erratum 843419 by default])
4474 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1"
4479 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\
4480 Valid choices are 'yes' and 'no'.])
4488 # All TARGET_ABI_OSF targets.
4489 alpha*-*-linux* | alpha*-*-*bsd*)
4490 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4491 gcc_cv_as_alpha_explicit_relocs,,
4494 extbl $3, $2, $3 !lituse_bytoff!1
4495 ldq $2, a($29) !literal!1
4496 ldq $4, b($29) !literal!2
4497 ldq_u $3, 0($2) !lituse_base!1
4498 ldq $27, f($29) !literal!5
4499 jsr $26, ($27), f !lituse_jsr!5
4500 ldah $29, 0($26) !gpdisp!3
4501 lda $0, c($29) !gprel
4502 ldah $1, d($29) !gprelhigh
4503 lda $1, d($1) !gprellow
4504 lda $29, 0($29) !gpdisp!3],,
4505 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
4506 [Define if your assembler supports explicit relocations.])])
4507 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
4508 gcc_cv_as_alpha_jsrdirect_relocs,,
4511 ldq $27, a($29) !literal!1
4512 jsr $26, ($27), a !lituse_jsrdirect!1],,
4513 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
4514 [Define if your assembler supports the lituse_jsrdirect relocation.])])
4518 gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax,
4519 [--mlink-relax], [.text],,
4520 [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1,
4521 [Define if your avr assembler supports --mlink-relax option.])])
4523 gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,
4525 [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1,
4526 [Define if your avr assembler supports -mrmw option.])])
4528 gcc_GAS_CHECK_FEATURE([__gcc_isr pseudo instruction],
4529 gcc_cv_as_avr_mgccisr,
4535 [AC_DEFINE(HAVE_AS_AVR_MGCCISR_OPTION, 1,
4536 [Define if your avr assembler supports -mgcc-isr option.])])
4538 # Check how default linker description file implements .rodata for
4539 # avrxmega3 (PR21472). avr-gcc assumes .rodata is *not* loaded to
4540 # RAM so avr-gcc skips __do_copy_data for .rodata objects.
4541 AC_MSG_CHECKING(binutils for avrxmega3 .rodata support)
4542 cat > conftest.s <<EOF
4543 .section .rodata,"a",@progbits
4545 ;; avr-nm should print "... R xxvaryy", not "... D xxvaryy".
4550 AC_TRY_COMMAND([$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 "$as_me: nm output was" >&AS_MESSAGE_LOG_FD
4562 cat conftest.nm >&AS_MESSAGE_LOG_FD
4563 avr_ld_ver="`$gcc_cv_ld -v | sed -e 's:^.* ::'`"
4564 AC_MSG_WARN([[support for avrxmega3 .rodata in flash needs Binutils 2.29 or higher (have $avr_ld_ver)]])
4567 AC_MSG_RESULT(test failed)
4568 echo "$as_me: failed program was" >&AS_MESSAGE_LOG_FD
4569 cat conftest.s >&AS_MESSAGE_LOG_FD
4570 AC_MSG_WARN([[see `config.log' for details]])
4572 rm -f conftest.s conftest.o conftest.elf conftest.nm
4576 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
4577 gcc_cv_as_cris_no_mul_bug,
4578 [-no-mul-bug-abort], [.text],,
4579 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
4580 [Define if your assembler supports the -no-mul-bug-abort option.])])
4584 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,
4586 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
4587 [Define if your assembler supports -relax option.])])
4589 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
4590 gcc_cv_as_sparc_gotdata_op,
4597 sethi %gdop_hix22(foo), %g1
4598 xor %g1, %gdop_lox10(foo), %g1
4599 ld [[%l7 + %g1]], %g2, %gdop(foo)],
4600 [if test x$gcc_cv_ld != x \
4601 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4602 if test x$gcc_cv_objdump != x; then
4603 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
4604 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
4605 gcc_cv_as_sparc_gotdata_op=no
4607 gcc_cv_as_sparc_gotdata_op=yes
4612 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
4613 [Define if your assembler and linker support GOTDATA_OP relocs.])])
4615 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
4616 gcc_cv_as_sparc_ua_pcrel,
4624 .uaword %r_disp32(foo)],
4625 [if test x$gcc_cv_ld != x \
4626 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4627 gcc_cv_as_sparc_ua_pcrel=yes
4630 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
4631 [Define if your assembler and linker support unaligned PC relative relocs.])
4633 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
4634 gcc_cv_as_sparc_ua_pcrel_hidden,
4639 .uaword %r_disp32(foo)
4640 .byte 0x32, 0x33, 0x34
4645 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4646 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
4647 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
4648 | grep ' 31000000 07323334' > /dev/null 2>&1; then
4649 if $gcc_cv_objdump -R conftest 2> /dev/null \
4650 | grep 'DISP32' > /dev/null 2>&1; then
4653 gcc_cv_as_sparc_ua_pcrel_hidden=yes
4657 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
4658 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
4659 ]) # unaligned pcrel relocs
4661 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
4662 gcc_cv_as_sparc_offsetable_lo10,
4665 or %g1, %lo(ab) + 12, %g1
4666 or %g1, %lo(ab + 12), %g1],
4667 [if test x$gcc_cv_objdump != x \
4668 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
4669 | grep ' 82106000 82106000' > /dev/null 2>&1; then
4670 gcc_cv_as_sparc_offsetable_lo10=yes
4672 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
4673 [Define if your assembler supports offsetable %lo().])])
4675 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
4676 gcc_cv_as_sparc_fmaf,
4679 .register %g2, #scratch
4680 .register %g3, #scratch
4682 fmaddd %f0, %f2, %f4, %f6
4683 addxccc %g1, %g2, %g3
4684 fsrl32 %f2, %f4, %f8
4685 fnaddd %f10, %f12, %f14],,
4686 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
4687 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
4689 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
4690 gcc_cv_as_sparc_sparc4,
4693 .register %g2, #scratch
4694 .register %g3, #scratch
4697 1: cwbneg %g2, %g3, 1f
4700 aes_kexpand0 %f4, %f6, %f8
4701 des_round %f38, %f40, %f42, %f44
4702 camellia_f %f54, %f56, %f58, %f60
4703 kasumi_fi_xor %f46, %f48, %f50, %f52],,
4704 [AC_DEFINE(HAVE_AS_SPARC4, 1,
4705 [Define if your assembler supports SPARC4 instructions.])])
4707 gcc_GAS_CHECK_FEATURE([SPARC5 and VIS 4.0 instructions],
4708 gcc_cv_as_sparc_sparc5,
4711 .register %g2, #scratch
4712 .register %g3, #scratch
4715 fpadd8 %f0, %f2, %f4],,
4716 [AC_DEFINE(HAVE_AS_SPARC5_VIS4, 1,
4717 [Define if your assembler supports SPARC5 and VIS 4.0 instructions.])])
4719 gcc_GAS_CHECK_FEATURE([SPARC6 instructions],
4720 gcc_cv_as_sparc_sparc6,
4723 .register %g2, #scratch
4724 .register %g3, #scratch
4727 fpsll64x %f0, %f2, %f4],,
4728 [AC_DEFINE(HAVE_AS_SPARC6, 1,
4729 [Define if your assembler supports SPARC6 instructions.])])
4731 gcc_GAS_CHECK_FEATURE([LEON instructions],
4732 gcc_cv_as_sparc_leon,
4735 .register %g2, #scratch
4736 .register %g3, #scratch
4740 casa [[%g2]] 0xb, %g3, %g1],,
4741 [AC_DEFINE(HAVE_AS_LEON, 1,
4742 [Define if your assembler supports LEON instructions.])])
4746 i[34567]86-*-* | x86_64-*-*)
4750 # Full C++ conformance when using a shared libstdc++-v3 requires some
4751 # support from the Cygwin DLL, which in more recent versions exports
4752 # wrappers to aid in interposing and redirecting operators new, delete,
4753 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
4754 # are configuring for a version of Cygwin that exports the wrappers.
4755 if test x$host = x$target && test x$host_cpu = xi686; then
4756 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
4758 # Can't check presence of libc functions during cross-compile, so
4759 # we just have to assume we're building for an up-to-date target.
4760 gcc_ac_cygwin_dll_wrappers=yes
4762 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
4763 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
4764 [Define if you want to generate code by default that assumes that the
4765 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
4768 cygwin* | pe | mingw32*)
4769 # Recent binutils allows the three-operand form of ".comm" on PE. This
4770 # definition is used unconditionally to initialise the default state of
4771 # the target option variable that governs usage of the feature.
4772 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,,
4774 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
4775 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
4776 [Define if your assembler supports specifying the alignment
4777 of objects allocated using the GAS .comm command.])
4778 # Used for DWARF 2 in PE
4779 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
4780 gcc_cv_as_ix86_pe_secrel32,,
4785 [if test x$gcc_cv_ld != x \
4786 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
4787 gcc_cv_as_ix86_pe_secrel32=yes
4790 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
4791 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
4792 # Test if the assembler supports the extended form of the .section
4793 # directive that specifies section alignment. LTO support uses this,
4794 # but normally only after installation, so we warn but don't fail the
4795 # configure if LTO is enabled but the assembler does not support it.
4796 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
4797 -fatal-warnings,[.section lto_test,"dr0"])
4798 if test x$gcc_cv_as_section_has_align != xyes; then
4799 case ",$enable_languages," in
4801 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
4808 darwin2* | darwin19*)
4809 gcc_GAS_CHECK_FEATURE([llvm assembler x86-pad-for-align option],
4810 gcc_cv_as_mllvm_x86_pad_for_align,
4811 [-mllvm -x86-pad-for-align=false], [.text],,
4812 [AC_DEFINE(HAVE_AS_MLLVM_X86_PAD_FOR_ALIGN, 1,
4813 [Define if your macOS assembler supports -mllvm -x86-pad-for-align=false.])])
4817 gcc_GAS_CHECK_FEATURE([-xbrace_comment], gcc_cv_as_ix86_xbrace_comment,
4818 [-xbrace_comment=no], [.text],,
4819 [AC_DEFINE(HAVE_AS_XBRACE_COMMENT_OPTION, 1,
4820 [Define if your assembler supports -xbrace_comment option.])])
4822 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
4823 gcc_cv_as_ix86_filds,,
4824 [filds (%ebp); fists (%ebp)],,
4825 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
4826 [Define if your assembler uses filds and fists mnemonics.])])
4828 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
4829 gcc_cv_as_ix86_fildq,,
4830 [fildq (%ebp); fistpq (%ebp)],,
4831 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
4832 [Define if your assembler uses fildq and fistq mnemonics.])])
4834 gcc_GAS_CHECK_FEATURE([cmov syntax],
4835 gcc_cv_as_ix86_cmov_sun_syntax,,
4836 [cmovl.l %edx, %eax],,
4837 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
4838 [Define if your assembler supports the Sun syntax for cmov.])])
4840 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
4841 gcc_cv_as_ix86_ffreep,,
4843 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
4844 [Define if your assembler supports the ffreep mnemonic.])])
4846 gcc_GAS_CHECK_FEATURE([.quad directive],
4847 gcc_cv_as_ix86_quad,,
4849 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
4850 [Define if your assembler supports the .quad directive.])])
4852 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
4853 gcc_cv_as_ix86_sahf,,
4856 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
4857 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
4859 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
4860 gcc_cv_as_ix86_interunit_movq,,
4864 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
4865 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
4866 [Define if your assembler supports interunit movq mnemonic.])
4868 gcc_GAS_CHECK_FEATURE([hle prefixes],
4869 gcc_cv_as_ix86_hle,,
4870 [lock xacquire cmpxchg %esi, (%ecx)],,
4871 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
4872 [Define if your assembler supports HLE prefixes.])])
4874 gcc_GAS_CHECK_FEATURE([swap suffix],
4875 gcc_cv_as_ix86_swap,,
4876 [movl.s %esp, %ebp],,
4877 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
4878 [Define if your assembler supports the swap suffix.])])
4880 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
4881 gcc_cv_as_ix86_diff_sect_delta,,
4889 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
4890 [Define if your assembler supports the subtraction of symbols in different sections.])])
4892 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
4893 gcc_cv_as_ix86_rep_lock_prefix,,
4899 lock addl %edi, (%eax,%esi)
4900 lock orl $0, (%esp)],,
4901 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
4902 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
4904 gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
4905 gcc_cv_as_ix86_ud2,,
4907 [AC_DEFINE(HAVE_AS_IX86_UD2, 1,
4908 [Define if your assembler supports the 'ud2' mnemonic.])])
4910 # Enforce 32-bit output with gas and gld.
4911 if test x$gas = xyes; then
4912 as_ix86_gas_32_opt="--32"
4914 if echo "$ld_ver" | grep GNU > /dev/null; then
4915 if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then
4916 ld_ix86_gld_32_opt="-melf_i386_sol2"
4918 ld_ix86_gld_32_opt="-melf_i386"
4922 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
4923 gcc_cv_as_ix86_tlsgdplt,
4924 [$as_ix86_gas_32_opt],
4925 [call tls_gd@tlsgdplt],
4926 [if test x$gcc_cv_ld != x \
4927 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4928 gcc_cv_as_ix86_tlsgdplt=yes
4931 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
4932 [Define if your assembler and linker support @tlsgdplt.])])
4935 .section .tdata,"aw'$tls_section_flag'",@progbits
4937 .section .text,"ax",@progbits
4938 call tls_ld@tlsldmplt'
4940 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
4941 gcc_cv_as_ix86_tlsldmplt,
4942 [$as_ix86_gas_32_opt],
4944 [if test x$gcc_cv_ld != x \
4945 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4946 gcc_cv_as_ix86_tlsldmplt=yes
4949 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT,
4950 [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`],
4951 [Define to 1 if your assembler and linker support @tlsldmplt.])
4954 .section .text,"ax",@progbits
4956 .type _start, @function
4958 leal value@tlsldm(%ebx), %eax
4959 call ___tls_get_addr@plt
4961 .section .tdata,"aw'$tls_section_flag'",@progbits
4962 .type value, @object
4964 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc],
4965 gcc_cv_as_ix86_tlsldm,
4966 [$as_ix86_gas_32_opt],
4968 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4969 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then
4970 if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \
4971 || dis conftest 2>/dev/null | grep nop > /dev/null; then
4972 gcc_cv_as_ix86_tlsldm=yes
4976 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM,
4977 [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`],
4978 [Define to 1 if your assembler and linker support @tlsldm.])
4989 gcc_GAS_CHECK_FEATURE([R_386_GOT32X reloc],
4990 gcc_cv_as_ix86_got32x,
4991 [$as_ix86_gas_32_opt],
4993 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4994 && test x$gcc_cv_readelf != x \
4995 && $gcc_cv_readelf --relocs --wide conftest.o 2>&1 \
4996 | grep R_386_GOT32X > /dev/null 2>&1 \
4997 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4998 if $gcc_cv_objdump -dw conftest 2>&1 \
4999 | grep 0xffffff > /dev/null 2>&1; then
5000 gcc_cv_as_ix86_got32x=no
5002 gcc_cv_as_ix86_got32x=yes
5006 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_GOT32X,
5007 [`if test x"$gcc_cv_as_ix86_got32x" = xyes; then echo 1; else echo 0; fi`],
5008 [Define 0/1 if your assembler and linker support @GOT.])
5010 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
5011 gcc_cv_as_ix86_gotoff_in_data,
5012 [$as_ix86_gas_32_opt],
5018 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
5019 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
5020 [Define true if the assembler supports '.long foo@GOTOFF'.])
5023 .section .text,"ax",@progbits
5025 .type _start, @function
5027 leal ld@tlsldm(%ecx), %eax
5028 call *___tls_get_addr@GOT(%ecx)
5029 leal gd@tlsgd(%ecx), %eax
5030 call *___tls_get_addr@GOT(%ecx)
5032 .section .tdata,"aw'$tls_section_flag'",@progbits
5040 gcc_GAS_CHECK_FEATURE([calling ___tls_get_addr via GOT],
5041 gcc_cv_as_ix86_tls_get_addr_via_got,
5042 [$as_ix86_gas_32_opt],
5044 [if test x$gcc_cv_ld != x \
5045 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
5046 gcc_cv_as_ix86_tls_get_addr_via_got=yes
5049 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLS_GET_ADDR_GOT,
5050 [`if test x"$gcc_cv_as_ix86_tls_get_addr_via_got" = xyes; then echo 1; else echo 0; fi`],
5051 [Define 0/1 if your assembler and linker support calling ___tls_get_addr via GOT.])
5055 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
5056 gcc_cv_as_ia64_ltoffx_ldxmov_relocs,,
5058 addl r15 = @ltoffx(x#), gp
5060 ld8.mov r16 = [[r15]], x#
5062 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
5063 [Define if your assembler supports ltoffx and ldxmov relocations.])])
5071 gcc_GAS_CHECK_FEATURE([.machine directive support],
5072 gcc_cv_as_machine_directive,,
5073 [ .machine ppc7400])
5074 if test x$gcc_cv_as_machine_directive != xyes; then
5075 echo "*** This target requires an assembler supporting \".machine\"" >&2
5076 echo you can get it from: https://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
5077 test x$build = x$target && exit 1
5083 *-*-aix*) conftest_s=' .machine "pwr5"
5086 *-*-darwin*) conftest_s=' .text
5088 *) conftest_s=' .machine power4
5093 gcc_GAS_CHECK_FEATURE([mfcr field support],
5094 gcc_cv_as_powerpc_mfcrf,,
5096 [AC_DEFINE(HAVE_AS_MFCRF, 1,
5097 [Define if your assembler supports mfcr field.])])
5100 *-*-aix*) conftest_s=' .csect .text[[PR]]
5102 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
5106 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
5107 *) conftest_s=' .text
5109 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
5112 gcc_GAS_CHECK_FEATURE([rel16 relocs],
5113 gcc_cv_as_powerpc_rel16, -a32,
5115 [AC_DEFINE(HAVE_AS_REL16, 1,
5116 [Define if your assembler supports R_PPC_REL16 relocs.])])
5119 *-*-aix*) conftest_s=' .machine "pwr7"
5122 *) conftest_s=' .machine power7
5127 gcc_GAS_CHECK_FEATURE([vector-scalar support],
5128 gcc_cv_as_powerpc_vsx, -a32,
5130 [AC_DEFINE(HAVE_AS_VSX, 1,
5131 [Define if your assembler supports VSX instructions.])])
5133 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5134 gcc_cv_as_powerpc_gnu_attribute,,
5135 [.gnu_attribute 4,1],,
5136 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5137 [Define if your assembler supports .gnu_attribute.])])
5139 gcc_GAS_CHECK_FEATURE([prologue entry point marker support],
5140 gcc_cv_as_powerpc_entry_markers,-a64 --fatal-warnings,
5141 [ .reloc .,R_PPC64_ENTRY; nop],,
5142 [AC_DEFINE(HAVE_AS_ENTRY_MARKERS, 1,
5143 [Define if your assembler supports the R_PPC64_ENTRY relocation.])])
5145 gcc_GAS_CHECK_FEATURE([plt sequence marker support],
5146 gcc_cv_as_powerpc_pltseq_markers,-a32 --fatal-warnings,
5147 [ .reloc .,R_PPC_PLTSEQ; nop],,
5148 [AC_DEFINE(HAVE_AS_PLTSEQ, 1,
5149 [Define if your assembler supports R_PPC*_PLTSEQ relocations.])])
5153 gcc_GAS_CHECK_FEATURE([AIX .ref support],
5155 [ .csect stuff[[rw]]
5161 [AC_DEFINE(HAVE_AS_REF, 1,
5162 [Define if your assembler supports .ref])])
5164 gcc_GAS_CHECK_FEATURE([AIX DWARF location lists section support],
5165 gcc_cv_as_aix_dwloc,,
5170 [AC_DEFINE(HAVE_XCOFF_DWARF_EXTRAS, 1,
5171 [Define if your assembler supports AIX debug frame section label reference.])])
5177 gcc_GAS_CHECK_FEATURE([explicit relocation support],
5178 gcc_cv_as_mips_explicit_relocs,,
5179 [ lw $4,%gp_rel(foo)($4)],,
5180 [if test x$target_cpu_default = x
5181 then target_cpu_default=MASK_EXPLICIT_RELOCS
5182 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
5185 gcc_GAS_CHECK_FEATURE([-mno-shared support],
5186 gcc_cv_as_mips_no_shared,[-mno-shared], [nop],,
5187 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
5188 [Define if the assembler understands -mno-shared.])])
5190 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5191 gcc_cv_as_mips_gnu_attribute,,
5192 [.gnu_attribute 4,1],,
5193 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5194 [Define if your assembler supports .gnu_attribute.])])
5196 gcc_GAS_CHECK_FEATURE([.module support],
5197 gcc_cv_as_mips_dot_module,[-32],
5200 [AC_DEFINE(HAVE_AS_DOT_MODULE, 1,
5201 [Define if your assembler supports .module.])])
5202 if test x$gcc_cv_as_mips_dot_module = xno \
5203 && test x$with_fp_32 != x; then
5205 [Requesting --with-fp-32= requires assembler support for .module.])
5208 gcc_GAS_CHECK_FEATURE([.micromips support],
5209 gcc_cv_as_micromips_support,[--fatal-warnings],
5211 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
5212 [Define if your assembler supports the .set micromips directive])])
5214 gcc_GAS_CHECK_FEATURE([.dtprelword support],
5215 gcc_cv_as_mips_dtprelword,,
5216 [.section .tdata,"awT",@progbits
5220 .dtprelword x+0x8000],,
5221 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
5222 [Define if your assembler supports .dtprelword.])])
5224 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
5225 gcc_cv_as_mips_dspr1_mult,,
5235 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
5236 [Define if your assembler supports DSPR1 mult.])])
5238 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
5239 gcc_cv_as_ld_jalr_reloc=no
5240 if test $gcc_cv_as_mips_explicit_relocs = yes; then
5241 if test $in_tree_ld = yes ; then
5242 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
5243 && test $in_tree_ld_is_elf = yes; then
5244 gcc_cv_as_ld_jalr_reloc=yes
5246 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
5247 echo ' .ent x' > conftest.s
5248 echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s
5249 echo ' lw $25,%call16(y)($28)' >> conftest.s
5250 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
5251 echo '1: jalr $25' >> conftest.s
5252 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
5253 echo '1: jalr $25' >> conftest.s
5254 echo ' .end x' >> conftest.s
5255 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
5256 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
5257 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
5258 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
5259 gcc_cv_as_ld_jalr_reloc=yes
5265 if test $gcc_cv_as_ld_jalr_reloc = yes; then
5266 if test x$target_cpu_default = x; then
5267 target_cpu_default=MASK_RELAX_PIC_CALLS
5269 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
5272 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
5274 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
5275 [gcc_cv_ld_mips_personality_relaxation],
5276 [gcc_cv_ld_mips_personality_relaxation=no
5277 if test $in_tree_ld = yes ; then
5278 if test "$gcc_cv_gld_major_version" -eq 2 \
5279 -a "$gcc_cv_gld_minor_version" -ge 21 \
5280 -o "$gcc_cv_gld_major_version" -gt 2; then
5281 gcc_cv_ld_mips_personality_relaxation=yes
5283 elif test x$gcc_cv_as != x \
5284 -a x$gcc_cv_ld != x \
5285 -a x$gcc_cv_readelf != x ; then
5286 cat > conftest.s <<EOF
5288 .cfi_personality 0x80,indirect_ptr
5295 .section .data,"aw",@progbits
5299 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
5300 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
5301 if $gcc_cv_readelf -d conftest 2>&1 \
5302 | grep TEXTREL > /dev/null 2>&1; then
5304 elif $gcc_cv_readelf --relocs conftest 2>&1 \
5305 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
5308 gcc_cv_ld_mips_personality_relaxation=yes
5312 rm -f conftest.s conftest.o conftest])
5313 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
5314 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
5315 [Define if your linker can relax absolute .eh_frame personality
5316 pointers into PC-relative form.])
5319 gcc_GAS_CHECK_FEATURE([-mnan= support],
5322 [AC_DEFINE(HAVE_AS_NAN, 1,
5323 [Define if the assembler understands -mnan=.])])
5324 if test x$gcc_cv_as_mips_nan = xno \
5325 && test x$with_nan != x; then
5327 [Requesting --with-nan= requires assembler support for -mnan=])
5331 # Earlier GAS versions generically support .gnu_attribute, but the
5332 # msp430 assembler will not do anything with it.
5333 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5334 gcc_cv_as_msp430_gnu_attribute,,
5335 [.gnu_attribute 4,1],,
5336 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5337 [Define if your assembler supports .gnu_attribute.])])
5338 gcc_GAS_CHECK_FEATURE([.mspabi_attribute support],
5339 gcc_cv_as_msp430_mspabi_attribute,,
5340 [.mspabi_attribute 4,2],,
5341 [AC_DEFINE(HAVE_AS_MSPABI_ATTRIBUTE, 1,
5342 [Define if your assembler supports .mspabi_attribute.])])
5343 if test x$enable_newlib_nano_formatted_io = xyes; then
5344 AC_DEFINE(HAVE_NEWLIB_NANO_FORMATTED_IO, 1, [Define if GCC has been
5345 configured with --enable-newlib-nano-formatted-io.])
5349 # Versions 2.33 and earlier lacked support for the %gotoff relocation
5350 # syntax that is documented in the ABI specification.
5351 gcc_GAS_CHECK_FEATURE([support for %gotoff relocations in constant data],
5352 gcc_cv_as_nios2_gotoff_relocation,,
5355 .long %gotoff(foo)],,
5356 [AC_DEFINE(HAVE_AS_NIOS2_GOTOFF_RELOCATION, 1,
5357 [Define if your assembler supports %gotoff relocation syntax.])])
5360 gcc_GAS_CHECK_FEATURE([.attribute support],
5361 gcc_cv_as_riscv_attribute,,
5362 [.attribute stack_align,4],,
5363 [AC_DEFINE(HAVE_AS_RISCV_ATTRIBUTE, 1,
5364 [Define if your assembler supports .attribute.])])
5365 gcc_GAS_CHECK_FEATURE([-misa-spec= support],
5366 gcc_cv_as_riscv_isa_spec,
5368 [AC_DEFINE(HAVE_AS_MISA_SPEC, 1,
5369 [Define if the assembler understands -misa-spec=.])])
5370 gcc_GAS_CHECK_FEATURE([-march=rv32i_zifencei support],
5371 gcc_cv_as_riscv_march_zifencei,
5372 [-march=rv32i_zifencei2p0],,,
5373 [AC_DEFINE(HAVE_AS_MARCH_ZIFENCEI, 1,
5374 [Define if the assembler understands -march=rv*_zifencei.])])
5377 gcc_GAS_CHECK_FEATURE([.dtprelword support],
5378 gcc_cv_as_loongarch_dtprelword, [2,18,0],,
5379 [.section .tdata,"awT",@progbits
5383 .dtprelword x+0x8000],,
5384 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
5385 [Define if your assembler supports .dtprelword.])])
5386 gcc_GAS_CHECK_FEATURE([explicit relocation support],
5387 gcc_cv_as_loongarch_explicit_relocs,,
5388 [a:pcalau12i $t0,%pc_hi20(a)],,
5389 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
5390 [Define if your assembler supports explicit relocation.])])
5391 gcc_GAS_CHECK_FEATURE([eh_frame pcrel encoding support],
5392 gcc_cv_as_loongarch_eh_frame_pcrel_encoding_support,,
5394 .cfi_personality 0x9b,a
5397 [AC_DEFINE(HAVE_AS_EH_FRAME_PCREL_ENCODING_SUPPORT, 1,
5398 [Define if your assembler supports eh_frame pcrel encoding.])])
5399 gcc_GAS_CHECK_FEATURE([-mrelax option], gcc_cv_as_loongarch_relax,
5400 [-mrelax], [.text],,
5401 [AC_DEFINE(HAVE_AS_MRELAX_OPTION, 1,
5402 [Define if your assembler supports -mrelax option.])])
5405 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5406 gcc_cv_as_s390_gnu_attribute,,
5407 [.gnu_attribute 8,1],,
5408 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5409 [Define if your assembler supports .gnu_attribute.])])
5410 gcc_GAS_CHECK_FEATURE([.machine and .machinemode support],
5411 gcc_cv_as_s390_machine_machinemode,,
5416 [AC_DEFINE(HAVE_AS_MACHINE_MACHINEMODE, 1,
5417 [Define if your assembler supports .machine and .machinemode.])])
5418 gcc_GAS_CHECK_FEATURE([architecture modifiers support],
5419 gcc_cv_as_s390_architecture_modifiers,,
5420 [ .machine z13+vx ],,
5421 [AC_DEFINE(HAVE_AS_ARCHITECTURE_MODIFIERS, 1,
5422 [Define if your assembler supports architecture modifiers.])])
5423 gcc_GAS_CHECK_FEATURE([vector load/store alignment hints],
5424 gcc_cv_as_s390_vector_loadstore_alignment_hints,,
5425 [ vl %v24,0(%r15),3 ],,
5426 [AC_DEFINE(HAVE_AS_VECTOR_LOADSTORE_ALIGNMENT_HINTS, 1,
5427 [Define if your assembler supports vl/vst/vlm/vstm with an optional alignment hint argument.])])
5428 gcc_GAS_CHECK_FEATURE([vector load/store alignment hints on z13],
5429 gcc_cv_as_s390_vector_loadstore_alignment_hints_on_z13, [-mzarch -march=z13],
5430 [ vl %v24,0(%r15),3 ],,
5431 [AC_DEFINE(HAVE_AS_VECTOR_LOADSTORE_ALIGNMENT_HINTS_ON_Z13, 1,
5432 [Define if your assembler supports vl/vst/vlm/vstm with an optional alignment hint argument on z13.])])
5437 # Mips, LoongArch and HP-UX need the GNU assembler.
5438 # Linux on IA64 might be able to use the Intel assembler.
5441 mips*-*-* | loongarch*-*-* | *-*-hpux* )
5442 if test x$gas_flag = xyes \
5443 || test x"$host" != x"$build" \
5444 || test ! -x "$gcc_cv_as" \
5445 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
5448 echo "*** This configuration requires the GNU assembler" >&2
5454 # AMD GCN needs the LLVM assembler and linker.
5455 # Test that LLVM is at least 13.0.1.
5458 AC_MSG_CHECKING(llvm assembler version)
5459 gcc_cv_as_version="unknown"
5460 if test x$gcc_cv_as != x; then
5461 gcc_cv_as_version=`$gcc_cv_as --version 2>&1 | sed -ne '/version/s/.* \([[0-9]]\)/\1/p' || echo error`
5462 case "$gcc_cv_as_version" in
5463 13.0.[[1-9]]*) ;; # 13.0.1+
5464 13.[[1-9]]*) ;; # 13.1+
5465 1[[4-9]]*) ;; # 14..19
5466 [[2-9]][[0-9]]*) ;; # 20..99
5467 [[1-9]][[0-9]][[0-9]]*) ;; # 100+
5468 error) AC_MSG_ERROR([cannot determine LLVM version]) ;;
5469 *) AC_MSG_ERROR([LLVM 13.0.1 or later is required (found LLVM $gcc_cv_as_version)]) ;;
5472 AC_MSG_RESULT([$gcc_cv_as_version, ok])
5478 gcc_GAS_CHECK_FEATURE([assembler for arm accepts context-specific architecture extensions],
5479 gcc_cv_as_arm_option_extensions,
5480 [-march=armv8.1-m.main+mve],
5485 [AC_DEFINE(HAVE_GAS_ARM_EXTENDED_ARCH, 1,
5486 [Define if your Arm assembler permits context-specific feature extensions.])])
5489 # ??? Not all targets support dwarf2 debug_line, even within a version
5490 # of gas. Moreover, we need to emit a valid instruction to trigger any
5491 # info to the output file. So, as supported targets are added to gas 2.11,
5492 # add some instruction here to (also) show we expect this might work.
5493 # ??? Once 2.11 is released, probably need to add first known working
5494 # version to the per-target configury.
5496 aarch64 | alpha | arc | arm | avr | bfin | cris | csky | i386 | loongarch | m32c \
5497 | m68k | microblaze | mips | nds32 | nios2 | pa | riscv | rs6000 | score | sparc \
5498 | visium | xstormy16 | xtensa)
5508 if test x"$insn" != x; then
5510 .file 1 \"conftest.s\"
5513 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
5514 gcc_cv_as_dwarf2_debug_line,,
5516 [if test x$gcc_cv_objdump != x \
5517 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
5518 | grep debug_line > /dev/null 2>&1; then
5519 gcc_cv_as_dwarf2_debug_line=yes
5520 elif test x$gcc_cv_otool != x \
5521 && $gcc_cv_otool -l conftest.o 2> /dev/null \
5522 | grep debug_line > /dev/null 2>&1; then
5523 gcc_cv_as_dwarf2_debug_line=yes
5526 # The .debug_line file table must be in the exact order that
5527 # we specified the files, since these indices are also used
5528 # by DW_AT_decl_file. Approximate this test by testing if
5529 # the assembler bitches if the same index is assigned twice.
5530 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
5531 gcc_cv_as_dwarf2_file_buggy,,
5535 if test $gcc_cv_as_dwarf2_debug_line = yes \
5536 && test $gcc_cv_as_dwarf2_file_buggy = no; then
5537 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
5538 [Define if your assembler supports dwarf2 .file/.loc directives,
5539 and preserves file table indices exactly as given.])
5541 if test $gcc_cv_as_leb128 = yes; then
5543 .file 1 \"conftest.s\"
5544 .loc 1 3 0 view .LVU1
5550 gcc_GAS_CHECK_FEATURE([dwarf2 debug_view support],
5551 gcc_cv_as_dwarf2_debug_view,,
5553 [AC_DEFINE(HAVE_AS_DWARF2_DEBUG_VIEW, 1,
5554 [Define if your assembler supports views in dwarf2 .loc directives.])])
5558 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
5559 gcc_cv_as_gdwarf2_flag,
5560 [--gdwarf2], [$insn],,
5561 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
5562 [Define if your assembler supports the --gdwarf2 option.])])
5564 gcc_GAS_CHECK_FEATURE([--gdwarf-5 option],
5565 gcc_cv_as_gdwarf_5_flag,
5566 [--gdwarf-5], [$insn],
5567 [if test x$gcc_cv_objdump != x \
5568 && $gcc_cv_objdump -Wi conftest.o 2>&1 \
5569 | grep DW_TAG_compile_unit > /dev/null 2>&1; then
5570 gcc_cv_as_gdwarf_5_flag=yes;
5571 fi],[AC_DEFINE(HAVE_AS_GDWARF_5_DEBUG_FLAG, 1,
5572 [Define if your assembler supports the --gdwarf-5 option.])])
5575 win32 | pe | cygwin* | mingw32*)
5576 section_flags=\"dr\"
5577 function_type=".def foo; .scl 2; .type 32; .endef"
5580 section_flags=\"\",%progbits
5581 function_type=".type foo, %function"
5582 function_size=".size foo, .-foo";;
5584 dwarf4_debug_info_size=0x46
5585 dwarf4_high_pc_form=7
5586 dwarf4_debug_aranges_size=0x2c
5588 for dwarf4_addr_size in 8 4; do
5604 .section .debug_info,$section_flags
5606 .4byte $dwarf4_debug_info_size
5608 .4byte .Ldebug_abbrev0
5609 .byte 0x$dwarf4_addr_size
5611 .ascii \"GNU C17\\0\"
5615 .${dwarf4_addr_size}byte .Ltext0
5616 .${dwarf4_addr_size}byte .Letext0-.Ltext0
5617 .4byte .Ldebug_line0
5623 .${dwarf4_addr_size}byte .LFB0
5624 .${dwarf4_addr_size}byte .LFE0-.LFB0
5628 .section .debug_abbrev,$section_flags
5644 .byte 0x$dwarf4_high_pc_form
5665 .byte 0x$dwarf4_high_pc_form
5671 .section .debug_aranges,$section_flags
5672 .4byte $dwarf4_debug_aranges_size
5674 .4byte .Ldebug_info0
5679 .${dwarf4_addr_size}byte .Ltext0
5680 .${dwarf4_addr_size}byte .Letext0-.Ltext0
5681 .${dwarf4_addr_size}byte 0
5682 .${dwarf4_addr_size}byte 0
5683 .section .debug_line,$section_flags
5685 .4byte .LELT0-.LSLT0
5688 .4byte .LELTP0-.LASLTP0
5716 .byte 0x$dwarf4_line_sz
5718 .${dwarf4_addr_size}byte .LM1
5723 .byte 0x$dwarf4_line_sz
5725 .${dwarf4_addr_size}byte .LM2
5730 .byte 0x$dwarf4_line_sz
5732 .${dwarf4_addr_size}byte .Letext0
5737 .section .debug_str,$section_flags
5741 if test $dwarf4_addr_size = 4; then
5742 gcc_GAS_CHECK_FEATURE([assembly of compiler generated 32-bit .debug_line],
5743 gcc_cv_as_debug_line_32_flag,,
5745 [dwarf4_success=yes])
5747 gcc_GAS_CHECK_FEATURE([assembly of compiler generated 64-bit .debug_line],
5748 gcc_cv_as_debug_line_64_flag,,
5750 [dwarf4_success=yes])
5752 if test $dwarf4_success = yes; then
5754 gcc_GAS_CHECK_FEATURE([--gdwarf-4 not refusing compiler generated .debug_line],
5755 gcc_cv_as_dwarf_4_debug_line_flag,
5756 [--gdwarf-4], [$conftest_s],,
5757 [dwarf4_success=yes])
5760 dwarf4_debug_info_size=0x36
5761 dwarf4_high_pc_form=6
5762 dwarf4_debug_aranges_size=0x1c
5766 if test $dwarf4_success = yes; then
5784 gcc_GAS_CHECK_FEATURE([--gdwarf-4 with the APP marker],
5785 gcc_cv_as_dwarf_4_app_flag,
5786 [--gdwarf-4], [$conftest_s],, [dwarf4_success=yes])
5789 if test $dwarf4_success = yes; then
5799 gcc_GAS_CHECK_FEATURE([working --gdwarf-4/--gdwarf-5 for all sources],
5800 gcc_cv_as_working_gdwarf_n_flag,
5804 if test x$gcc_cv_objdump != x \
5805 && $gcc_cv_objdump -W conftest.o 2>&1 \
5806 | grep conftest.s > /dev/null 2>&1; then
5807 gcc_cv_as_working_gdwarf_n_flag=no
5809 gcc_cv_as_working_gdwarf_n_flag=yes
5811 changequote([,])dnl])
5812 if test $gcc_cv_as_working_gdwarf_n_flag = yes; then
5813 AC_DEFINE(HAVE_AS_WORKING_DWARF_N_FLAG, 1,
5814 [Define if your assembler supports --gdwarf-4/--gdwarf-5 even with
5815 compiler generated .debug_line.])
5819 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
5820 gcc_cv_as_debug_prefix_map_flag,
5821 [--debug-prefix-map /a=/b], [$insn],,
5822 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
5823 [Define if your assembler supports the --debug-prefix-map option.])])
5826 gcc_GAS_CHECK_FEATURE([compressed debug sections],
5827 gcc_cv_as_compress_debug,,,
5828 [# gas compiled without zlib cannot compress debug sections and warns
5829 # about it, but still exits successfully. So check for this, too.
5830 if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null
5832 gcc_cv_as_compress_debug=0
5833 elif $gcc_cv_as --compress-debug-sections=zlib -o conftest.o conftest.s > /dev/null 2>&1
5835 gcc_cv_as_compress_debug=1
5836 gcc_cv_as_compress_debug_option="--compress-debug-sections"
5837 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
5838 # Since binutils 2.40, gas supports --compress-debug-sections=zstd.
5839 if $gcc_cv_as --compress-debug-sections=zstd -o conftest.o conftest.s > /dev/null 2>&1
5841 gcc_cv_as_compress_debug=2
5844 gcc_cv_as_compress_debug=0
5846 AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug,
5847 [Define to the level of your assembler's compressed debug section support.])
5848 AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option",
5849 [Define to the assembler option to enable compressed debug sections.])
5850 AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option",
5851 [Define to the assembler option to disable compressed debug sections.])
5853 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,,
5855 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
5856 [Define if your assembler supports .lcomm with an alignment field.])])
5858 if test x$with_sysroot = x && test x$host = x$target \
5859 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
5860 && test "$prefix" != "NONE"; then
5861 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
5862 [Define to PREFIX/include if cpp should also search that directory.])
5865 # Determine the version of glibc, if any, used on the target.
5866 AC_MSG_CHECKING([for target glibc version])
5867 AC_ARG_WITH([glibc-version],
5868 [AS_HELP_STRING([--with-glibc-version=M.N],
5869 [assume GCC used with glibc version M.N or later])], [
5870 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
5871 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
5872 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
5874 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
5876 glibc_version_major=0
5877 glibc_version_minor=0
5878 [if test -f $target_header_dir/features.h \
5879 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
5880 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
5881 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
5882 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
5884 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
5885 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MAJOR], [$glibc_version_major],
5886 [GNU C Library major version number used on the target, or 0.])
5887 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MINOR], [$glibc_version_minor],
5888 [GNU C Library minor version number used on the target, or 0.])
5890 AC_ARG_ENABLE(gnu-unique-object,
5891 [AS_HELP_STRING([--enable-gnu-unique-object],
5892 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
5893 [case $enable_gnu_unique_object in
5895 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
5896 Valid choices are 'yes' and 'no'.]) ;;
5898 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,,
5899 [.type foo, '$target_type_format_char'gnu_unique_object],,
5900 # We need to unquote above to to use the definition from config.gcc.
5901 # Also check for ld.so support, i.e. glibc 2.11 or higher.
5902 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
5904 if test x$enable_gnu_unique_object = xyes; then
5905 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
5906 [Define if your assembler supports @gnu_unique_object.])
5909 AC_CACHE_CHECK([assembler for tolerance to line number 0],
5910 [gcc_cv_as_line_zero],
5911 [gcc_cv_as_line_zero=no
5912 if test "x$gcc_cv_as" != x; then
5913 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
5914 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
5915 test "x`cat conftest.out`" = x
5917 gcc_cv_as_line_zero=yes
5919 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
5920 cat conftest.s >&AS_MESSAGE_LOG_FD
5921 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
5922 cat conftest.out >&AS_MESSAGE_LOG_FD
5924 rm -f conftest.o conftest.s conftest.out
5926 if test "x$gcc_cv_as_line_zero" = xyes; then
5927 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
5928 [Define if the assembler won't complain about a line such as # 0 "" 2.])
5931 AC_MSG_CHECKING(support for thin archives)
5932 thin_archive_support=no
5933 echo 'int main (void) { return 0; }' > conftest.c
5934 if ($AR --version | sed 1q | grep "GNU ar" \
5935 && $CC $CFLAGS -c conftest.c \
5936 && $AR rcT conftest.a conftest.o \
5937 && $CC $CFLAGS $LDFLAGS -o conftest conftest.a) >/dev/null 2>&1; then
5938 thin_archive_support=yes
5940 rm -f conftest.c conftest.o conftest.a conftest
5941 AC_MSG_RESULT($thin_archive_support)
5942 AC_SUBST(thin_archive_support)
5944 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
5945 gcc_cv_ld_eh_frame_hdr=no
5946 if test $in_tree_ld = yes ; then
5947 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
5948 && test $in_tree_ld_is_elf = yes; then
5949 gcc_cv_ld_eh_frame_hdr=yes
5951 elif test x$gcc_cv_ld != x; then
5952 if echo "$ld_ver" | grep GNU > /dev/null; then
5953 # Check if linker supports --eh-frame-hdr option
5954 if $gcc_cv_ld --help 2>&1 | grep eh-frame-hdr > /dev/null; then
5955 gcc_cv_ld_eh_frame_hdr=yes
5960 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
5961 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
5962 gcc_cv_ld_eh_frame_hdr=yes
5968 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
5969 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
5970 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
5971 [Define if your linker supports .eh_frame_hdr.])
5973 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
5975 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
5976 gcc_cv_ld_eh_frame_ciev3=no
5977 if test $in_tree_ld = yes ; then
5978 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5979 && test $in_tree_ld_is_elf = yes; then
5980 gcc_cv_ld_eh_frame_ciev3=yes
5982 elif test x$gcc_cv_ld != x; then
5983 if echo "$ld_ver" | grep GNU > /dev/null; then
5984 gcc_cv_ld_eh_frame_ciev3=yes
5985 if test 0"$ld_date" -lt 20040513; then
5986 if test -n "$ld_date"; then
5987 # If there was date string, but was earlier than 2004-05-13, fail
5988 gcc_cv_ld_eh_frame_ciev3=no
5989 elif test "$ld_vers_major" -lt 2; then
5990 gcc_cv_ld_eh_frame_ciev3=no
5991 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
5992 gcc_cv_ld_eh_frame_ciev3=no
5998 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
5999 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
6000 gcc_cv_ld_eh_frame_ciev3=yes
6006 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
6007 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
6008 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
6009 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
6011 AC_MSG_CHECKING(linker position independent executable support)
6013 if test $in_tree_ld = yes ; then
6015 # Full PIE support on Solaris was only introduced in gld 2.26.
6016 *-*-solaris2*) gcc_gld_pie_min_version=26 ;;
6017 *) gcc_gld_pie_min_version=15 ;;
6019 if test "$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 \
6020 && test $in_tree_ld_is_elf = yes; then
6023 elif test x$gcc_cv_ld != x; then
6024 # Check if linker supports -pie option
6025 if $gcc_cv_ld --help 2>&1 | grep -- -pie > /dev/null; then
6029 if echo "$ld_ver" | grep GNU > /dev/null \
6030 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
6037 *-*-solaris2.1[[1-9]]*)
6038 # Solaris 11.3 added PIE support.
6039 if $gcc_cv_ld -z help 2>&1 | grep -- type.*pie > /dev/null; then
6046 if test x"$gcc_cv_ld_pie" = xyes; then
6047 AC_DEFINE(HAVE_LD_PIE, 1,
6048 [Define if your linker supports PIE option.])
6050 AC_MSG_RESULT($gcc_cv_ld_pie)
6052 AC_MSG_CHECKING(linker PIE support with copy reloc)
6053 gcc_cv_ld_pie_copyreloc=no
6054 if test $gcc_cv_ld_pie = yes ; then
6055 if test $in_tree_ld = yes ; then
6056 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6057 gcc_cv_ld_pie_copyreloc=yes
6059 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6060 # Check if linker supports -pie option with copy reloc
6062 i?86-*-linux* | x86_64-*-linux*)
6063 cat > conftest1.s <<EOF
6066 .type a_glob, @object
6071 cat > conftest2.s <<EOF
6074 .type main, @function
6076 movl %eax, a_glob(%rip)
6079 .section .data.rel,"aw",@progbits
6084 if $gcc_cv_as --64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
6085 && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \
6086 && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
6087 && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then
6088 gcc_cv_ld_pie_copyreloc=yes
6090 rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s
6095 AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC,
6096 [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`],
6097 [Define 0/1 if your linker supports -pie option with copy reloc.])
6098 AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc)
6100 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
6101 gcc_cv_ld_eh_gc_sections=no
6102 if test $in_tree_ld = yes ; then
6103 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
6104 && test $in_tree_ld_is_elf = yes; then
6105 gcc_cv_ld_eh_gc_sections=yes
6107 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
6108 cat > conftest.s <<EOF
6111 .type _start, @function
6114 .size _start, .-_start
6115 .section .text.foo,"ax",@progbits
6116 .type foo, @function
6120 .section .gcc_except_table.foo,"a",@progbits
6123 .section .eh_frame,"a",@progbits
6126 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
6127 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
6128 | grep "gc-sections option ignored" > /dev/null; then
6129 gcc_cv_ld_eh_gc_sections=no
6130 elif $gcc_cv_objdump -h conftest 2> /dev/null \
6131 | grep gcc_except_table > /dev/null; then
6132 gcc_cv_ld_eh_gc_sections=yes
6133 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
6134 if test x$gcc_cv_as_comdat_group != xyes; then
6135 gcc_cv_ld_eh_gc_sections=no
6136 cat > conftest.s <<EOF
6139 .type _start, @function
6142 .size _start, .-_start
6143 .section .gnu.linkonce.t.foo,"ax",@progbits
6144 .type foo, @function
6148 .section .gcc_except_table.foo,"a",@progbits
6151 .section .eh_frame,"a",@progbits
6154 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
6155 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
6156 | grep "gc-sections option ignored" > /dev/null; then
6157 gcc_cv_ld_eh_gc_sections=no
6158 elif $gcc_cv_objdump -h conftest 2> /dev/null \
6159 | grep gcc_except_table > /dev/null; then
6160 gcc_cv_ld_eh_gc_sections=yes
6166 rm -f conftest.s conftest.o conftest
6170 # ??? This apparently exposes a binutils bug with PC-relative relocations.
6171 gcc_cv_ld_eh_gc_sections=no
6174 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
6175 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
6176 [Define if your linker supports garbage collection of
6177 sections in presence of EH frames.])
6179 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
6181 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
6182 gcc_cv_ld_eh_gc_sections_bug=no
6183 if test $in_tree_ld = yes ; then
6184 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
6185 && test $in_tree_ld_is_elf = yes; then
6186 gcc_cv_ld_eh_gc_sections_bug=yes
6188 elif test x$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
6189 gcc_cv_ld_eh_gc_sections_bug=yes
6190 cat > conftest.s <<EOF
6193 .type _start, @function
6196 .size _start, .-_start
6197 .section .text.startup.foo,"ax",@progbits
6198 .type foo, @function
6202 .section .gcc_except_table.foo,"a",@progbits
6205 .section .eh_frame,"a",@progbits
6208 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
6209 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
6210 | grep "gc-sections option ignored" > /dev/null; then
6212 elif $gcc_cv_objdump -h conftest 2> /dev/null \
6213 | grep gcc_except_table > /dev/null; then
6214 gcc_cv_ld_eh_gc_sections_bug=no
6217 rm -f conftest.s conftest.o conftest
6219 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
6220 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
6221 [Define if your linker has buggy garbage collection of
6222 sections support when .text.startup.foo like sections are used.])
6224 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
6226 AC_MSG_CHECKING(linker for compressed debug sections)
6227 # GNU ld/gold support --compressed-debug-sections=zlib since binutils 2.26.
6228 if $gcc_cv_ld --help 2>&1 | grep -- '--compress-debug-sections.*\<zlib-gabi\>' > /dev/null; then
6229 gcc_cv_ld_compress_debug=1
6230 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
6231 # Detect zstd debug section compression support
6232 if $gcc_cv_ld --help 2>&1 | grep -- '--compress-debug-sections.*\<zstd\>' > /dev/null; then
6233 gcc_cv_ld_compress_debug=2
6239 # Introduced in Solaris 11.2.
6240 if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then
6241 gcc_cv_ld_compress_debug=1
6242 gcc_cv_ld_compress_debug_option="-z compress-sections"
6244 gcc_cv_ld_compress_debug=0
6248 # Assume linkers other than GNU ld don't support compessed debug
6250 gcc_cv_ld_compress_debug=0
6255 AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug,
6256 [Define to the level of your linker's compressed debug section support.])
6257 AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option",
6258 [Define to the linker option to enable compressed debug sections.])
6259 AC_MSG_RESULT($gcc_cv_ld_compress_debug)
6261 if test x"$ld64_flag" = x"yes"; then
6263 # Set defaults for possibly untestable items.
6264 gcc_cv_ld64_export_dynamic=0
6265 gcc_cv_ld64_platform_version=0
6266 gcc_cv_ld64_demangle=0
6268 if test "$build" = "$host"; then
6274 # On Darwin, because of FAT library support, it is often possible to execute
6275 # exes from compatible archs even when the host differs from the build system.
6276 case "$build","$host" in
6277 x86_64-*-darwin*,i?86-*-darwin* | powerpc64*-*-darwin*,powerpc*-*-darwin*)
6282 # If the configurer specified a minimum ld64 version to be supported, then use
6283 # that to determine feature support.
6284 if test x"${gcc_cv_ld64_version}" != x; then
6285 AC_MSG_CHECKING(ld64 specified version)
6286 gcc_cv_ld64_major=`echo "$gcc_cv_ld64_version" | sed -e 's/\..*//'`
6287 AC_MSG_RESULT($gcc_cv_ld64_major)
6288 if test "$gcc_cv_ld64_major" -ge 97; then
6289 gcc_cv_ld64_demangle=1
6291 if test "$gcc_cv_ld64_major" -ge 236; then
6292 gcc_cv_ld64_export_dynamic=1
6294 if test "$gcc_cv_ld64_major" -ge 512; then
6295 gcc_cv_ld64_platform_version=1
6297 elif test -x "$gcc_cv_ld" -a "$darwin_try_test" -eq 1; then
6298 # If the version was not specified, try to find it.
6299 AC_MSG_CHECKING(linker version)
6300 if test x"${gcc_cv_ld64_version}" = x; then
6301 gcc_cv_ld64_version=`$gcc_cv_ld -v 2>&1 | $EGREP 'ld64|dyld' \
6302 | sed -e 's/.*ld64-//' -e 's/.*dyld-//'| awk '{print $1}'`
6304 AC_MSG_RESULT($gcc_cv_ld64_version)
6306 AC_MSG_CHECKING(linker for -demangle support)
6307 gcc_cv_ld64_demangle=1
6308 if $gcc_cv_ld -demangle < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then
6309 gcc_cv_ld64_demangle=0
6311 AC_MSG_RESULT($gcc_cv_ld64_demangle)
6313 AC_MSG_CHECKING(linker for -export_dynamic support)
6314 gcc_cv_ld64_export_dynamic=1
6315 if $gcc_cv_ld -export_dynamic < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then
6316 gcc_cv_ld64_export_dynamic=0
6318 AC_MSG_RESULT($gcc_cv_ld64_export_dynamic)
6320 AC_MSG_CHECKING(linker for -platform_version support)
6321 gcc_cv_ld64_platform_version=1
6322 if $gcc_cv_ld -platform_version macos 10.5 0.0 < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then
6323 gcc_cv_ld64_platform_version=0
6325 AC_MSG_RESULT($gcc_cv_ld64_platform_version)
6328 if test x"${gcc_cv_ld64_version}" != x; then
6329 AC_DEFINE_UNQUOTED(LD64_VERSION, "${gcc_cv_ld64_version}",
6330 [Define to ld64 version.])
6333 AC_DEFINE_UNQUOTED(LD64_HAS_DEMANGLE, $gcc_cv_ld64_demangle,
6334 [Define to 1 if ld64 supports '-demangle'.])
6336 AC_DEFINE_UNQUOTED(LD64_HAS_EXPORT_DYNAMIC, $gcc_cv_ld64_export_dynamic,
6337 [Define to 1 if ld64 supports '-export_dynamic'.])
6339 AC_DEFINE_UNQUOTED(LD64_HAS_PLATFORM_VERSION, $gcc_cv_ld64_platform_version,
6340 [Define to 1 if ld64 supports '-platform_version'.])
6343 if test x"$dsymutil_flag" = x"yes"; then
6345 # If the user specified a dsymutil path, then we will already have the
6346 # version string, otherwise, pick it up.
6347 if test x"$gcc_cv_dsymutil" = x; then
6348 AC_MSG_WARN([dsymutil is a required tool for this system, but not found])
6349 dsymutil_vers="tool unspecified"
6350 elif test x"$dsymutil_vers" = x; then
6351 dsymutil_vers=`$gcc_cv_dsymutil -v /dev/null 2>&1`
6354 dsymutil_temp=`echo $dsymutil_vers | sed 1q`
6355 AC_MSG_CHECKING(dsymutil version "$dsymutil_temp")
6356 if echo $dsymutil_temp | grep dwarfutils- > /dev/null; then
6357 dsymutil_kind=DWARFUTILS
6358 dsymutil_vers=`echo $dsymutil_temp | sed 's/.*dwarfutils-\([[0-9\.]]*\).*/\1/'`
6359 elif echo $dsymutil_temp | grep clang- > /dev/null; then
6361 dsymutil_vers=`echo $dsymutil_temp | sed 's/.*clang-\([[0-9\.]]*\).*/\1/'`
6362 elif echo $dsymutil_temp | grep 'LLVM version ' > /dev/null; then
6364 dsymutil_vers=`echo $dsymutil_temp | sed 's/.*LLVM\ version\ \([[0-9\.]]*\).*/\1/'`
6366 dsymutil_kind=DET_UNKNOWN
6369 dsymutil_major=`expr "$dsymutil_vers" : '\([[0-9]]*\)'`
6370 dsymutil_minor=`expr "$dsymutil_vers" : '[[0-9]]*\.\([[0-9]]*\)'`
6371 dsymutil_tiny=`expr "$dsymutil_vers" : '[[0-9]]*\.[[0-9]]*\.\([[0-9]]*\)'`
6372 if test x"${dsymutil_minor}" = x; then
6375 if test x"${dsymutil_tiny}" = x; then
6378 AC_DEFINE_UNQUOTED(DSYMUTIL_VERSION, [$dsymutil_kind,${dsymutil_major},${dsymutil_minor},${dsymutil_tiny}],
6379 [Define to the dsymutil version.])
6380 AC_MSG_RESULT($dsymutil_vers : $dsymutil_kind ${dsymutil_major} ${dsymutil_minor} ${dsymutil_tiny} )
6384 win32 | pe | cygwin* | mingw32*)
6385 AC_MSG_CHECKING(broken PE linker dwarf5 support)
6386 gcc_cv_ld_broken_pe_dwarf5=yes
6387 if test $in_tree_ld = yes ; then
6388 if grep -q '\.debug_loclists.*BLOCK.*__section_alignment__.*NOLOAD.*:' \
6389 $gcc_cv_ld_gld_srcdir/scripttempl/pe*.sc \
6390 && grep -q '\.debug_rnglists.*BLOCK.*__section_alignment__.*NOLOAD.*:' \
6391 $gcc_cv_ld_gld_srcdir/scripttempl/pe*.sc; then
6392 gcc_cv_ld_broken_pe_dwarf5=no
6395 if $gcc_cv_ld --verbose 2>&1 | grep -q '\.debug_loclists.*BLOCK.*__section_alignment__.*NOLOAD.*:' \
6396 && $gcc_cv_ld --verbose 2>&1 | grep -q '\.debug_rnglists.*BLOCK.*__section_alignment__.*NOLOAD.*:'; then
6397 gcc_cv_ld_broken_pe_dwarf5=no
6400 if test x$gcc_cv_ld_broken_pe_dwarf5 = xyes; then
6401 AC_DEFINE(HAVE_LD_BROKEN_PE_DWARF5, 1,
6402 [Define if the PE linker has broken DWARF 5 support.])
6404 AC_MSG_RESULT($gcc_cv_ld_broken_pe_dwarf5)
6406 AC_MSG_CHECKING(PE linker --disable-dynamicbase support)
6407 gcc_cv_ld_disable_dynamicbase=no
6408 if test $in_tree_ld = yes; then
6409 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 36 -o "$gcc_cv_gld_major_version" -gt 2; then \
6410 gcc_cv_ld_disable_dynamicbase=yes
6413 if $gcc_cv_ld --help 2>&1 | grep -q 'disable\-]dynamicbase' > /dev/null; then
6414 gcc_cv_ld_disable_dynamicbase=yes
6417 if test x"$gcc_cv_ld_disable_dynamicbase" = xyes; then
6418 AC_DEFINE(HAVE_LD_PE_DISABLE_DYNAMICBASE, 1,
6419 [Define if the PE linker supports --disable-dynamicbase option.])
6421 AC_MSG_RESULT($gcc_cv_ld_disable_dynamicbase)
6429 AC_CACHE_CHECK(linker --as-needed support,
6430 gcc_cv_ld_as_needed,
6431 [gcc_cv_ld_as_needed=no
6432 gcc_cv_ld_as_needed_option='--as-needed'
6433 gcc_cv_ld_no_as_needed_option='--no-as-needed'
6434 if test $in_tree_ld = yes ; then
6435 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
6436 && test $in_tree_ld_is_elf = yes; then
6437 gcc_cv_ld_as_needed=yes
6438 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 28; then
6439 gcc_cv_ld_as_needed_option='--push-state --as-needed'
6440 gcc_cv_ld_no_as_needed_option='--pop-state'
6443 elif test x$gcc_cv_ld != x; then
6444 # Check if linker supports --as-needed and --no-as-needed options
6445 if $gcc_cv_ld --help 2>&1 | grep as-needed > /dev/null; then
6446 gcc_cv_ld_as_needed=yes
6447 if $gcc_cv_ld --help 2>&1 | grep push-state > /dev/null \
6448 && $gcc_cv_ld --help 2>&1 | grep pop-state > /dev/null \
6449 && echo "$ld_ver" | grep GNU > /dev/null \
6450 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 28; then
6451 # Use these options only when both ld.bfd and ld.gold support
6452 # --push-state/--pop-state, which unfortunately wasn't added
6454 gcc_cv_ld_as_needed_option='--push-state --as-needed'
6455 gcc_cv_ld_no_as_needed_option='--pop-state'
6458 case "$target:$gnu_ld" in
6460 # Solaris 2 ld always supports -z ignore/-z record. Prefer the native
6462 gcc_cv_ld_as_needed=yes
6463 gcc_cv_ld_as_needed_option="-z ignore"
6464 gcc_cv_ld_no_as_needed_option="-z record"
6468 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
6469 # dl_iterate_phdr, i.e. since Solaris 11.
6471 *-*-solaris2.1[[1-9]]*)
6473 i?86-*-* | x86_64-*-*)
6474 if echo "$ld_ver" | grep GNU > /dev/null; then
6475 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
6476 gcc_cv_ld_as_needed=no
6482 gcc_cv_ld_as_needed=no
6486 if test x"$gcc_cv_ld_as_needed" = xyes; then
6487 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
6488 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
6489 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
6490 [Define to the linker option to ignore unused dependencies.])
6491 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
6492 [Define to the linker option to keep unused dependencies.])
6495 AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities)
6496 saved_LDFLAGS="$LDFLAGS"
6497 for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do
6498 LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map"
6499 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
6500 [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no])
6502 LDFLAGS="$saved_LDFLAGS"
6503 if test "x$gcc_cv_ld_clearcap" = xyes; then
6504 AC_DEFINE([HAVE_LD_CLEARCAP], 1,
6505 [Define if the linker supports clearing hardware capabilities via mapfile.])
6506 AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map])
6508 AC_MSG_RESULT($gcc_cv_ld_clearcap)
6514 emul_name="-melf32lppc"
6517 emul_name="-melf32ppc"
6520 AC_CACHE_CHECK(linker .gnu.attributes long double support,
6522 [gcc_cv_ld_ppc_attr=no
6523 if test x"$ld_is_gold" = xyes; then
6524 gcc_cv_ld_ppc_attr=yes
6525 elif test $in_tree_ld = yes ; then
6526 if test "$gcc_cv_gld_major_version" -eq 2 \
6527 -a "$gcc_cv_gld_minor_version" -ge 28 \
6528 -o "$gcc_cv_gld_major_version" -gt 2; then
6529 gcc_cv_ld_ppc_attr=yes
6531 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6532 # check that merging the long double .gnu_attribute doesn't warn
6533 cat > conftest1.s <<EOF
6536 cat > conftest2.s <<EOF
6539 if $gcc_cv_as -a32 -o conftest1.o conftest1.s > /dev/null 2>&1 \
6540 && $gcc_cv_as -a32 -o conftest2.o conftest2.s > /dev/null 2>&1 \
6541 && $gcc_cv_ld $emul_name -r -o conftest.o conftest1.o conftest2.o > /dev/null 2> conftest.err \
6542 && test ! -s conftest.err; then
6543 gcc_cv_ld_ppc_attr=yes
6545 rm -f conftest.err conftest.o conftest1.o conftest2.o conftest1.s conftest2.s
6548 if test x$gcc_cv_ld_ppc_attr = xyes; then
6549 AC_DEFINE(HAVE_LD_PPC_GNU_ATTR_LONG_DOUBLE, 1,
6550 [Define if your PowerPC linker has .gnu.attributes long double support.])
6555 case "$target:$tm_file" in
6556 powerpc64*-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
6559 emul_name="-melf64lppc"
6562 emul_name="-melf64ppc"
6565 emul_name="-melf64lppc_fbsd"
6568 emul_name="-melf64ppc_fbsd"
6571 AC_CACHE_CHECK(linker support for omitting dot symbols,
6572 gcc_cv_ld_no_dot_syms,
6573 [gcc_cv_ld_no_dot_syms=no
6574 if test x"$ld_is_gold" = xyes; then
6575 gcc_cv_ld_no_dot_syms=yes
6576 elif test $in_tree_ld = yes ; then
6577 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
6578 gcc_cv_ld_no_dot_syms=yes
6580 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6581 cat > conftest1.s <<EOF
6585 cat > conftest2.s <<EOF
6586 .section ".opd","aw"
6591 .quad .LEfoo,.TOC.@tocbase,0
6597 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
6598 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
6599 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
6600 gcc_cv_ld_no_dot_syms=yes
6602 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
6605 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
6606 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
6607 [Define if your PowerPC64 linker only needs function descriptor syms.])
6610 AC_CACHE_CHECK(linker large toc support,
6611 gcc_cv_ld_large_toc,
6612 [gcc_cv_ld_large_toc=no
6613 if test x"$ld_is_gold" = xyes; then
6614 gcc_cv_ld_large_toc=yes
6615 elif test $in_tree_ld = yes ; then
6616 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
6617 gcc_cv_ld_large_toc=yes
6619 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6620 cat > conftest.s <<EOF
6621 .section ".tbss","awT",@nobits
6627 addis 9,13,ie0@got@tprel@ha
6628 ld 9,ie0@got@tprel@l(9)
6630 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
6631 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
6632 gcc_cv_ld_large_toc=yes
6634 rm -f conftest conftest.o conftest.s
6637 if test x"$gcc_cv_ld_large_toc" = xyes; then
6638 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
6639 [Define if your PowerPC64 linker supports a large TOC.])
6642 AC_CACHE_CHECK(linker toc pointer alignment,
6643 gcc_cv_ld_toc_align,
6644 [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then
6645 cat > conftest.s <<EOF
6650 .section .data.rel.ro,"aw",@progbits
6655 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
6656 && $gcc_cv_ld $emul_name -z norelro -o conftest conftest.o > /dev/null 2>&1; then
6657 gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'`
6659 rm -f conftest conftest.o conftest.s
6662 if test -n "$gcc_cv_ld_toc_align" && test $gcc_cv_ld_toc_align -gt 8; then
6663 AC_DEFINE_UNQUOTED(POWERPC64_TOC_POINTER_ALIGNMENT, $gcc_cv_ld_toc_align,
6664 [Define to .TOC. alignment forced by your linker.])
6671 AC_CACHE_CHECK(linker large toc support,
6672 gcc_cv_ld_large_toc,
6673 [gcc_cv_ld_large_toc=no
6674 if test x$gcc_cv_as != x ; then
6675 cat > conftest.s <<EOF
6685 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
6686 gcc_cv_ld_large_toc=yes
6688 rm -f conftest conftest.o conftest.s
6691 if test x"$gcc_cv_ld_large_toc" = xyes; then
6692 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
6693 [Define if your PowerPC64 linker supports a large TOC.])
6698 AC_CACHE_CHECK(linker --build-id support,
6700 [gcc_cv_ld_buildid=no
6701 if test $in_tree_ld = yes ; then
6702 if test "$gcc_cv_gld_major_version" -eq 2 -a \
6703 "$gcc_cv_gld_minor_version" -ge 18 -o \
6704 "$gcc_cv_gld_major_version" -gt 2 \
6705 && test $in_tree_ld_is_elf = yes; then
6706 gcc_cv_ld_buildid=yes
6708 elif test x$gcc_cv_ld != x; then
6709 if $gcc_cv_ld --help 2>&1 | grep build-id > /dev/null; then
6710 gcc_cv_ld_buildid=yes
6713 if test x"$gcc_cv_ld_buildid" = xyes; then
6714 AC_DEFINE(HAVE_LD_BUILDID, 1,
6715 [Define if your linker supports --build-id.])
6718 AC_ARG_ENABLE(linker-build-id,
6719 [AS_HELP_STRING([--enable-linker-build-id],
6720 [compiler will always pass --build-id to linker])],
6722 enable_linker_build_id=no)
6724 if test x"$enable_linker_build_id" = xyes; then
6725 if test x"$gcc_cv_ld_buildid" = xyes; then
6726 AC_DEFINE(ENABLE_LD_BUILDID, 1,
6727 [Define if gcc should always pass --build-id to linker.])
6729 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
6733 # In binutils 2.21, GNU ld gained support for new emulations fully
6734 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
6735 AC_CACHE_CHECK(linker *_sol2 emulation support,
6736 gcc_cv_ld_sol2_emulation,
6737 [gcc_cv_ld_sol2_emulation=no
6738 if test $in_tree_ld = yes ; then
6739 if test "$gcc_cv_gld_major_version" -eq 2 -a \
6740 "$gcc_cv_gld_minor_version" -ge 21 -o \
6741 "$gcc_cv_gld_major_version" -gt 2 \
6742 && test $in_tree_ld_is_elf = yes; then
6743 gcc_cv_ld_sol2_emulation=yes
6745 elif test x$gcc_cv_ld != x; then
6746 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
6747 grep _sol2 > /dev/null; then
6748 gcc_cv_ld_sol2_emulation=yes
6751 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
6752 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
6753 [Define if your linker supports the *_sol2 emulations.])
6756 AC_CACHE_CHECK(linker --sysroot support,
6758 [gcc_cv_ld_sysroot=no
6759 if test $in_tree_ld = yes ; then
6760 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
6761 gcc_cv_ld_sysroot=yes
6763 elif test x$gcc_cv_ld != x; then
6764 if $gcc_cv_ld --help 2>&1 | grep sysroot > /dev/null; then
6765 gcc_cv_ld_sysroot=yes
6768 if test x"$gcc_cv_ld_sysroot" = xyes; then
6769 AC_DEFINE(HAVE_LD_SYSROOT, 1,
6770 [Define if your linker supports --sysroot.])
6775 # Check for system-provided CRTs on Solaris 11.x and Solaris 12.
6776 AC_CACHE_CHECK([system-provided CRTs on Solaris],
6777 gcc_cv_solaris_crts,
6778 [gcc_cv_solaris_crts=no
6779 if test x$host != x$target; then
6780 if test "x$with_sysroot" = xyes; then
6781 target_sysroot="${test_exec_prefix}/${target_noncanonical}/sys-root"
6783 target_sysroot="${with_sysroot}"
6786 target_libdir="$target_sysroot/usr/lib"
6787 # At the time they were added, gcrt1.o became a symlink for backwards
6788 # compatibility on x86, while crt1.o was added on sparc, so check for that.
6790 i?86-*-solaris2* | x86_64-*-solaris2*)
6791 if test -h "$target_libdir/gcrt1.o"; then gcc_cv_solaris_crts=yes; fi
6794 if test -f "$target_libdir/crt1.o"; then gcc_cv_solaris_crts=yes; fi
6799 if test x$gcc_cv_solaris_crts = xyes; then
6800 AC_DEFINE(HAVE_SOLARIS_CRTS, 1,
6801 [Define if the system-provided CRTs are present on Solaris.])
6804 AC_ARG_ENABLE(libssp,
6805 [AS_HELP_STRING([--enable-libssp], [enable linking against libssp])],
6806 [case "${enableval}" in
6810 AC_MSG_ERROR([unknown libssp setting $enableval])
6814 # Test for stack protector support in target C library.
6815 AC_CACHE_CHECK(__stack_chk_fail in target C library,
6816 gcc_cv_libc_provides_ssp,
6817 [gcc_cv_libc_provides_ssp=no
6818 if test "x$enable_libssp" = "xno"; then
6819 gcc_cv_libc_provides_ssp=yes
6820 elif test "x$enable_libssp" = "xyes"; then
6821 gcc_cv_libc_provides_ssp=no
6825 # All versions of musl provide stack protector
6826 gcc_cv_libc_provides_ssp=yes;;
6827 *-*-linux* | *-*-kfreebsd*-gnu)
6828 # glibc 2.4 and later provides __stack_chk_fail and
6829 # either __stack_chk_guard, or TLS access to stack guard canary.
6830 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
6831 [if test -f $target_header_dir/features.h \
6832 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
6833 $target_header_dir/features.h > /dev/null; then
6834 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
6835 $target_header_dir/features.h > /dev/null && \
6836 test -f $target_header_dir/bits/uClibc_config.h && \
6837 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
6838 $target_header_dir/bits/uClibc_config.h > /dev/null; then
6839 gcc_cv_libc_provides_ssp=yes
6841 # all versions of Bionic support stack protector
6842 elif test -f $target_header_dir/sys/cdefs.h \
6843 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
6844 $target_header_dir/sys/cdefs.h > /dev/null; then
6845 gcc_cv_libc_provides_ssp=yes
6849 # Avoid complicated tests (see
6850 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
6851 # simply assert that glibc does provide this, which is true for all
6852 # realistically usable GNU/Hurd configurations.
6853 # All supported versions of musl provide it as well
6854 gcc_cv_libc_provides_ssp=yes;;
6855 *-*-darwin* | *-*-freebsd* | *-*-netbsd*)
6856 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
6857 [echo "no __stack_chk_fail on this target"])
6859 *) gcc_cv_libc_provides_ssp=no ;;
6863 if test x$gcc_cv_libc_provides_ssp = xyes; then
6864 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
6865 [Define if your target C library provides stack protector support])
6868 # Check whether --enable-default-ssp was given.
6869 AC_ARG_ENABLE(default-ssp,
6870 [AS_HELP_STRING([--enable-default-ssp],
6871 [enable Stack Smashing Protection as default])],[
6872 if test x$gcc_cv_libc_provides_ssp = xyes; then
6874 ia64*-*-*) enable_default_ssp=no ;;
6875 *) enable_default_ssp=$enableval ;;
6878 enable_default_ssp=no
6880 enable_default_ssp=no)
6881 if test x$enable_default_ssp = xyes ; then
6882 AC_DEFINE(ENABLE_DEFAULT_SSP, 1,
6883 [Define if your target supports default stack protector and it is enabled.])
6885 AC_SUBST([enable_default_ssp])
6887 # Test for <sys/sdt.h> on the target.
6888 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
6889 AC_CACHE_CHECK([sys/sdt.h in the target C library], [gcc_cv_sys_sdt_h], [
6891 if test -f $target_header_dir/sys/sdt.h; then
6892 gcc_cv_sys_sdt_h=yes
6895 AS_IF([test x$gcc_cv_sys_sdt_h = xyes], [
6896 AC_DEFINE([HAVE_SYS_SDT_H], [1],
6897 [Define if your target C library provides sys/sdt.h])
6900 # Check if TFmode long double should be used by default or not.
6901 # Some glibc targets used DFmode long double, but with glibc 2.4
6902 # and later they can use TFmode.
6904 powerpc*-*-linux* | \
6908 AC_ARG_WITH(long-double-128,
6909 [AS_HELP_STRING([--with-long-double-128],
6910 [use 128-bit long double by default])],
6911 gcc_cv_target_ldbl128="$with_long_double_128", [
6913 s390*-*-linux-musl*)
6914 gcc_cv_target_ldbl128=yes
6916 powerpc*-*-linux-musl*)
6917 gcc_cv_target_ldbl128=no
6920 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
6921 [gcc_cv_target_ldbl128=no
6922 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
6923 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
6924 && gcc_cv_target_ldbl128=yes
6932 if test x$gcc_cv_target_ldbl128 = xyes; then
6933 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
6934 [Define if TFmode long double should be the default])
6937 # Check if TFmode long double target should use the IBM extended double or IEEE
6938 # 128-bit floating point formats if long doubles are 128-bits long. The long
6939 # double type can only be switched on powerpc64 bit Linux systems where VSX is
6940 # supported. Other PowerPC systems do not build the IEEE 128-bit emulator in
6942 AC_ARG_WITH([long-double-format],
6943 [AS_HELP_STRING([--with-long-double-format={ieee,ibm}]
6944 [Specify whether PowerPC long double uses IEEE or IBM format])],[
6945 case "$target:$with_long_double_format" in
6946 powerpc64le-*-linux*:ieee | powerpc64le-*-linux*:ibm)
6949 powerpc64-*-linux*:ieee | powerpc64-*-linux*:ibm)
6950 # IEEE 128-bit emulation is only built on 64-bit VSX Linux systems
6952 power7 | power8 | power9 | power1*)
6956 AC_MSG_ERROR([Configuration option --with-long-double-format is only \
6957 supported if the default cpu is power7 or newer])
6958 with_long_double_format=""
6962 powerpc64*-*-linux*:*)
6963 AC_MSG_ERROR([--with-long-double-format argument should be ibm or ieee])
6964 with_long_double_format=""
6967 AC_MSG_ERROR([Configure option --with-long-double-format is only supported \
6968 on 64-bit PowerPC VSX Linux systems])
6969 with_long_double_format=""
6974 # Check if the target LIBC supports exporting the AT_PLATFORM and AT_HWCAP
6975 # values in the TCB. Currently, only GLIBC 2.23 and later support this.
6976 gcc_cv_libc_provides_hwcap_in_tcb=no
6979 GCC_GLIBC_VERSION_GTE_IFELSE([2], [23], [gcc_cv_libc_provides_hwcap_in_tcb=yes], )
6982 if test x$gcc_cv_libc_provides_hwcap_in_tcb = xyes; then
6983 AC_DEFINE(TARGET_LIBC_PROVIDES_HWCAP_IN_TCB, 1,
6984 [Define if your target C Library provides the AT_HWCAP value in the TCB])
6987 # Check if the target LIBC handles PT_GNU_STACK.
6988 gcc_cv_libc_gnustack=unknown
6990 mips*-*-linux-musl*)
6991 gcc_cv_libc_gnustack=yes
6994 GCC_GLIBC_VERSION_GTE_IFELSE([2], [31], [gcc_cv_libc_gnustack=yes], )
6997 if test x$gcc_cv_libc_gnustack = xyes; then
6998 AC_DEFINE(TARGET_LIBC_GNUSTACK, 1,
6999 [Define if your target C Library properly handles PT_GNU_STACK])
7002 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
7003 gcc_cv_target_dl_iterate_phdr=unknown
7006 # <link.h> needs both a dl_iterate_phdr declaration and support for
7007 # compilation with largefile support.
7008 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
7009 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
7010 gcc_cv_target_dl_iterate_phdr=yes
7012 gcc_cv_target_dl_iterate_phdr=no
7015 *-*-dragonfly* | *-*-freebsd*)
7016 if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then
7017 gcc_cv_target_dl_iterate_phdr=yes
7019 gcc_cv_target_dl_iterate_phdr=no
7023 gcc_cv_target_dl_iterate_phdr=yes
7026 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
7027 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
7028 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
7029 [Define if your target C library provides the `dl_iterate_phdr' function.])
7031 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
7033 # We no longer support different GC mechanisms. Emit an error if
7034 # the user configures with --with-gc.
7036 [AS_HELP_STRING([--with-gc={page,zone}],
7037 [this option is not supported anymore. It used to choose
7038 the garbage collection mechanism to use with the compiler])],
7039 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
7042 # Libraries to use on the host. This will normally be set by the top
7043 # level Makefile. Here we simply capture the value for our Makefile.
7044 if test -z "${HOST_LIBS+set}"; then
7049 # Use the system's zlib library.
7052 dnl Very limited version of automake's enable-maintainer-mode
7054 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
7055 dnl maintainer-mode is disabled by default
7056 AC_ARG_ENABLE(maintainer-mode,
7057 [AS_HELP_STRING([--enable-maintainer-mode],
7058 [enable make rules and dependencies not useful
7059 (and sometimes confusing) to the casual installer])],
7060 maintainer_mode=$enableval,
7063 AC_MSG_RESULT($maintainer_mode)
7065 if test "$maintainer_mode" = "yes"; then
7072 dnl Variables for tags utilities; copied from automake 1.16.4+'s init.m4
7073 if test -z "$CTAGS"; then
7077 if test -z "$ETAGS"; then
7081 if test -z "$CSCOPE"; then
7086 dnl Whether to prevent multiple front-ends from linking at the same time
7088 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
7089 AC_ARG_ENABLE(link-mutex,
7090 [AS_HELP_STRING([--enable-link-mutex],
7091 [avoid linking multiple front-ends at once to avoid thrashing
7092 on the build machine])],
7093 do_link_mutex=$enableval,
7095 AC_MSG_RESULT($do_link_mutex)
7097 if test "$do_link_mutex" = "yes"; then
7099 AC_MSG_WARN([--enable-link-mutex is deprecated and will be removed in the next release, use --enable-link-serialization instead])
7103 AC_SUBST(DO_LINK_MUTEX)
7105 dnl Whether to prevent multiple GCC front-ends from linking at the same time
7107 AC_MSG_CHECKING([whether to serialize linking of multiple front-ends])
7108 AC_ARG_ENABLE(link-serialization,
7109 [AS_HELP_STRING([--enable-link-serialization],
7110 [avoid linking multiple GCC front-ends at once using make
7111 dependencies to avoid thrashing on the build machine])],
7112 do_link_serialization=$enableval,
7113 do_link_serialization=no)
7114 AC_MSG_RESULT($do_link_serialization)
7116 case "$do_link_serialization" in
7118 DO_LINK_SERIALIZATION=1;;
7119 [[1-9]] | [[1-9]][[0-9]] | [[1-9]][[0-9]][[0-9]])
7120 DO_LINK_SERIALIZATION=$do_link_serialization;;
7122 DO_LINK_SERIALIZATION=;;
7124 AC_MSG_ERROR(bad value ${do_link_serialization} given for --enable-link-serialization) ;;
7126 AC_SUBST(DO_LINK_SERIALIZATION)
7132 # Make empty files to contain the specs and options for each language.
7133 # Then add #include lines to for a compiler that has specs and/or options.
7139 # These (without "all_") are set in each config-lang.in.
7140 # `language' must be a single word so is spelled singularly.
7143 all_outputs='Makefile'
7144 # List of language configure and makefile fragments.
7145 all_lang_configurefrags=
7147 # Additional files for gengtype
7148 all_gtfiles="$target_gtfiles"
7150 # These are the languages that are set in --enable-languages,
7151 # and are available in the GCC tree.
7152 all_selected_languages=
7154 # Add the language fragments.
7155 # Languages are added via two mechanisms. Some information must be
7156 # recorded in makefile variables, these are defined in config-lang.in.
7157 # We accumulate them and plug them into the main Makefile.
7158 # The other mechanism is a set of hooks for each of the main targets
7159 # like `clean', `install', etc.
7161 language_hooks="Make-hooks"
7163 for lang in ${srcdir}/*/config-lang.in
7166 test "$lang" = "${srcdir}/*/config-lang.in" && continue
7168 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
7169 if test "x$lang_alias" = x
7171 echo "$lang doesn't set \$language." 1>&2
7174 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
7175 subdirs="$subdirs $subdir"
7177 # $gcc_subdir is where the gcc integration files are to be found
7178 # for a language, both for internal compiler purposes (compiler
7179 # sources implementing front-end to GCC tree converters), and for
7180 # build infrastructure purposes (Make-lang.in, etc.)
7182 # This will be <subdir> (relative to $srcdir) if a line like
7183 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
7184 # is found in <langdir>/config-lang.in, and will remain <langdir>
7187 # Except for the language alias (fetched above), the regular
7188 # "config-lang.in" contents are always retrieved from $gcc_subdir,
7189 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
7190 # only this and the language alias.
7192 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
7193 if [ "$gcc_subdir" = "" ]; then
7194 gcc_subdir="$subdir"
7197 case ",$enable_languages," in
7199 all_selected_languages="$all_selected_languages $lang_alias"
7200 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
7201 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
7213 . ${srcdir}/$gcc_subdir/config-lang.in
7214 if test "x$language" = x
7216 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
7221 case ",$enable_languages," in
7224 for i in $subdir_requires; do
7225 test -f "${srcdir}/$i/config-lang.in" && continue
7233 all_lang_configurefrags="$all_lang_configurefrags \$(srcdir)/$gcc_subdir/config-lang.in"
7234 if test "x$language" = xc && test -n "$all_lang_makefrags"; then
7235 # Put c/Make-lang.in fragment first to match serialization languages order.
7236 all_lang_makefrags="\$(srcdir)/$gcc_subdir/Make-lang.in $all_lang_makefrags"
7238 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
7240 if test -f $srcdir/$gcc_subdir/lang.opt; then
7241 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
7242 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
7244 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
7245 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
7247 all_languages="$all_languages $language"
7248 all_compilers="$all_compilers $compilers"
7249 all_outputs="$all_outputs $outputs"
7250 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
7251 case ",$enable_languages," in
7253 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
7255 AC_SUBST(enable_lto)
7262 for language in $all_selected_languages
7264 check_languages="$check_languages check-$language"
7268 for language in $all_selected_languages
7270 selftest_languages="$selftest_languages selftest-$language"
7273 # We link each language in with a set of hooks, reached indirectly via
7274 # lang.${target}. Only do so for selected languages.
7278 target_list="all.cross start.encap rest.encap tags \
7279 install-common install-man install-info install-dvi install-pdf \
7280 install-html dvi pdf html uninstall info man srcextra srcman srcinfo \
7281 mostlyclean clean distclean maintainer-clean install-plugin"
7283 for t in $target_list
7286 for lang in $all_selected_languages
7290 echo "lang.$t: $x" >> Make-hooks
7293 echo "ifeq (\$(DO_LINK_SERIALIZATION),)" >> Make-hooks
7294 echo "SERIAL_LIST =" >> Make-hooks
7295 echo else >> Make-hooks
7299 serialization_languages=c
7300 for lang in $all_selected_languages
7302 test $lang = c && continue
7303 if test $lang = lto; then
7304 serialization_languages="$serialization_languages lto1 lto2"
7306 serialization_languages="$serialization_languages $lang"
7309 for lang in $serialization_languages
7311 test $lang = c && continue
7312 lang_cnt=`expr $lang_cnt + 1`
7313 lang_list=" $prev$lang_list"
7316 echo "SERIAL_LIST = \$(wordlist \$(DO_LINK_SERIALIZATION),$lang_cnt,$lang_list)" >> Make-hooks
7317 echo endif >> Make-hooks
7318 echo "SERIAL_COUNT = `expr $lang_cnt + 1`" >> Make-hooks
7319 echo "INDEX.c = 0" >> Make-hooks
7321 for lang in $serialization_languages
7323 test $lang = c && continue
7324 echo "$lang.prev = \$(if \$(word $lang_cnt,\$(SERIAL_LIST)),\$(\$(word $lang_cnt,\$(SERIAL_LIST)).serial))" >> Make-hooks
7325 echo "INDEX.$lang = $lang_idx" >> Make-hooks
7326 lang_cnt=`expr $lang_cnt - 1`
7327 lang_idx=`expr $lang_idx + 1`
7331 # Option include files
7334 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
7335 option_includes="option-includes.mk"
7336 AC_SUBST_FILE(option_includes)
7344 echo "dir ." > .gdbinit
7345 echo "dir ${srcdir}" >> .gdbinit
7346 if test x$gdb_needs_out_file_path = xyes
7348 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
7350 if test "x$subdirs" != x; then
7353 echo "dir ${srcdir}/$s" >> .gdbinit
7356 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
7357 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
7359 # Put a breakpoint on __asan_report_error to help with debugging buffer
7362 *-fsanitize=address*)
7363 echo "source ${srcdir}/gdbasan.in" >> .gdbinit
7367 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
7368 AC_SUBST(gcc_tooldir)
7371 # Find a directory in which to install a shared libgcc.
7373 AC_ARG_ENABLE(version-specific-runtime-libs,
7374 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
7375 [specify that runtime libraries should be
7376 installed in a compiler-specific directory])])
7378 # Substitute configuration variables
7381 AC_SUBST(all_compilers)
7382 AC_SUBST(all_gtfiles)
7383 AC_SUBST(all_lang_configurefrags)
7384 AC_SUBST(all_lang_makefrags)
7385 AC_SUBST(all_languages)
7386 AC_SUBST(all_selected_languages)
7387 AC_SUBST(build_exeext)
7388 AC_SUBST(build_install_headers_dir)
7389 AC_SUBST(build_xm_file_list)
7390 AC_SUBST(build_xm_include_list)
7391 AC_SUBST(build_xm_defines)
7392 AC_SUBST(build_file_translate)
7393 AC_SUBST(check_languages)
7394 AC_SUBST(selftest_languages)
7395 AC_SUBST(cpp_install_dir)
7396 AC_SUBST(xmake_file)
7397 AC_SUBST(tmake_file)
7398 AC_SUBST(TM_ENDIAN_CONFIG)
7399 AC_SUBST(TM_MULTILIB_CONFIG)
7400 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
7401 AC_SUBST(extra_gcc_objs)
7402 AC_SUBST(user_headers_inc_next_pre)
7403 AC_SUBST(user_headers_inc_next_post)
7404 AC_SUBST(extra_headers_list)
7405 AC_SUBST(extra_objs)
7406 AC_SUBST(extra_programs)
7407 AC_SUBST(float_h_file)
7408 AC_SUBST(gcc_config_arguments)
7409 AC_SUBST(gcc_gxx_include_dir)
7410 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
7411 AC_SUBST(gcc_gxx_libcxx_include_dir)
7412 AC_SUBST(gcc_gxx_libcxx_include_dir_add_sysroot)
7413 AC_SUBST(host_exeext)
7414 AC_SUBST(host_xm_file_list)
7415 AC_SUBST(host_xm_include_list)
7416 AC_SUBST(host_xm_defines)
7417 AC_SUBST(out_host_hook_obj)
7419 AC_SUBST(lang_opt_files)
7420 AC_SUBST(lang_specs_files)
7421 AC_SUBST(lang_tree_files)
7422 AC_SUBST(local_prefix)
7424 AC_SUBST(objc_boehm_gc)
7426 AC_SUBST(out_object_file)
7427 AC_SUBST(common_out_file)
7428 AC_SUBST(common_out_object_file)
7429 AC_SUBST(tm_file_list)
7430 AC_SUBST(tm_include_list)
7431 AC_SUBST(tm_defines)
7432 AC_SUBST(tm_p_file_list)
7433 AC_SUBST(tm_p_include_list)
7434 AC_SUBST(tm_d_file_list)
7435 AC_SUBST(tm_d_include_list)
7436 AC_SUBST(tm_rust_file_list)
7437 AC_SUBST(tm_rust_include_list)
7438 AC_SUBST(xm_file_list)
7439 AC_SUBST(xm_include_list)
7440 AC_SUBST(xm_defines)
7441 AC_SUBST(use_gcc_stdint)
7442 AC_SUBST(c_target_objs)
7443 AC_SUBST(cxx_target_objs)
7444 AC_SUBST(fortran_target_objs)
7445 AC_SUBST(d_target_objs)
7446 AC_SUBST(rust_target_objs)
7447 AC_SUBST(target_cpu_default)
7449 AC_SUBST_FILE(language_hooks)
7452 if test x${build} = x${host} ; then
7453 if test x${host} = x${target} ; then
7454 echo "Links are now set up to build a native compiler for ${target}." 1>&2
7456 echo "Links are now set up to build a cross-compiler" 1>&2
7457 echo " from ${host} to ${target}." 1>&2
7460 if test x${host} = x${target} ; then
7461 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
7462 echo " for ${target}." 1>&2
7464 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
7465 echo " from ${host} to ${target}." 1>&2
7469 AC_ARG_VAR(GMPLIBS,[How to link GMP])
7470 AC_ARG_VAR(GMPINC,[How to find GMP include files])
7472 AC_ARG_VAR(ISLLIBS,[How to link isl])
7473 AC_ARG_VAR(ISLINC,[How to find isl include files])
7474 if test "x${ISLLIBS}" != "x" ; then
7475 AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.])
7479 AC_SUBST(pluginlibs)
7480 AC_SUBST(enable_plugin)
7481 if test x"$enable_plugin" = x"yes"; then
7482 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
7486 # Enable --enable-host-shared
7487 AC_ARG_ENABLE(host-shared,
7488 [AS_HELP_STRING([--enable-host-shared],
7489 [build host code as shared libraries])])
7490 AC_SUBST(enable_host_shared)
7492 # Enable --enable-host-pie
7493 AC_ARG_ENABLE(host-pie,
7494 [AS_HELP_STRING([--enable-host-pie],
7495 [build host code as PIE])])
7496 AC_SUBST(enable_host_pie)
7498 # Enable --enable-host-bind-now
7499 AC_ARG_ENABLE(host-bind-now,
7500 [AS_HELP_STRING([--enable-host-bind-now],
7501 [link host code as BIND_NOW])])
7502 AC_SUBST(enable_host_bind_now)
7504 AC_ARG_ENABLE(libquadmath-support,
7505 [AS_HELP_STRING([--disable-libquadmath-support],
7506 [disable libquadmath support for Fortran])],
7507 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
7508 ENABLE_LIBQUADMATH_SUPPORT=yes)
7509 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
7510 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
7511 [Define to 1 to enable libquadmath support])
7515 # Specify what hash style to use by default.
7516 AC_ARG_WITH([linker-hash-style],
7517 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
7518 [specify the linker hash style])],
7519 [case x"$withval" in
7521 LINKER_HASH_STYLE=sysv
7524 LINKER_HASH_STYLE=gnu
7527 LINKER_HASH_STYLE=both
7530 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
7533 [LINKER_HASH_STYLE=''])
7534 if test x"${LINKER_HASH_STYLE}" != x; then
7535 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
7536 [The linker hash style])
7539 # Specify what should be the default of -fdiagnostics-color option.
7540 AC_ARG_WITH([diagnostics-color],
7541 [AC_HELP_STRING([--with-diagnostics-color={never,auto,auto-if-env,always}],
7542 [specify the default of -fdiagnostics-color option
7543 auto-if-env stands for -fdiagnostics-color=auto if
7544 GCC_COLOR environment variable is present and
7545 -fdiagnostics-color=never otherwise])],
7546 [case x"$withval" in
7548 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_NO
7551 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO
7554 DIAGNOSTICS_COLOR_DEFAULT=-1
7557 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_YES
7560 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-color])
7563 [DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO])
7564 AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT,
7565 [The default for -fdiagnostics-color option])
7567 # Specify what should be the default of -fdiagnostics-urls option.
7568 AC_ARG_WITH([diagnostics-urls],
7569 [AC_HELP_STRING([--with-diagnostics-urls={never,auto,auto-if-env,always}],
7570 [specify the default of -fdiagnostics-urls option
7571 auto-if-env stands for -fdiagnostics-urls=auto if
7572 GCC_URLS or TERM_URLS environment variable is present and
7573 -fdiagnostics-urls=never otherwise])],
7574 [case x"$withval" in
7576 DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_NO
7579 DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_AUTO
7582 DIAGNOSTICS_URLS_DEFAULT=-1
7585 DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_YES
7588 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-urls])
7591 [DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_AUTO])
7592 AC_DEFINE_UNQUOTED(DIAGNOSTICS_URLS_DEFAULT, $DIAGNOSTICS_URLS_DEFAULT,
7593 [The default for -fdiagnostics-urls option])
7595 # Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit
7596 # of jit/jit-playback.cc.
7597 gcc_driver_version=`eval "${get_gcc_base_ver} $srcdir/BASE-VER"`
7598 echo "gcc_driver_version: ${gcc_driver_version}"
7599 cat > gcc-driver-name.h <<EOF
7600 #define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_driver_version}${exeext}"
7603 # Check whether --enable-default-pie was given.
7604 AC_ARG_ENABLE(default-pie,
7605 [AS_HELP_STRING([--enable-default-pie],
7606 [enable Position Independent Executable as default])],
7607 enable_default_pie=$enableval,
7608 enable_default_pie=no)
7609 if test x$enable_default_pie = xyes ; then
7610 AC_DEFINE(ENABLE_DEFAULT_PIE, 1,
7611 [Define if your target supports default PIE and it is enabled.])
7613 AC_SUBST([enable_default_pie])
7615 # Check if -fno-PIE works.
7616 AC_CACHE_CHECK([for -fno-PIE option],
7618 [saved_CXXFLAGS="$CXXFLAGS"
7619 CXXFLAGS="$CXXFLAGS -fno-PIE"
7620 AC_COMPILE_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
7621 [gcc_cv_c_no_fpie=yes],
7622 [gcc_cv_c_no_fpie=no])
7623 CXXFLAGS="$saved_CXXFLAGS"])
7625 # Check if -no-pie works.
7626 AC_CACHE_CHECK([for -no-pie option],
7628 [saved_LDFLAGS="$LDFLAGS"
7629 LDFLAGS="$LDFLAGS -no-pie"
7630 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
7631 [gcc_cv_no_pie=yes],
7633 LDFLAGS="$saved_LDFLAGS"])
7635 if test x$enable_host_shared = xyes; then
7637 elif test x$enable_host_pie = xyes; then
7639 elif test x$gcc_cv_c_no_fpie = xyes; then
7647 if test x$enable_host_pie = xyes; then
7649 elif test x$gcc_cv_no_pie = xyes; then
7655 if test x$enable_host_bind_now = xyes; then
7656 LD_PICFLAG="$LD_PICFLAG -Wl,-z,now"
7659 AC_SUBST([LD_PICFLAG])
7661 # Enable Intel CET on Intel CET enabled host if jit is enabled.
7662 GCC_CET_HOST_FLAGS(CET_HOST_FLAGS)
7663 case x$enable_languages in
7670 AC_SUBST(CET_HOST_FLAGS)
7672 # Check linker supports '-z bndplt'
7673 ld_bndplt_support=no
7674 AC_MSG_CHECKING(linker -z bndplt option)
7675 if test x"$ld_is_gold" = xno; then
7676 if test $in_tree_ld = yes ; then
7677 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
7678 ld_bndplt_support=yes
7680 elif test x$gcc_cv_ld != x; then
7681 # Check if linker supports -a bndplt option
7682 if $gcc_cv_ld --help 2>&1 | grep -- '-z bndplt' > /dev/null; then
7683 ld_bndplt_support=yes
7687 if test x"$ld_bndplt_support" = xyes; then
7688 AC_DEFINE(HAVE_LD_BNDPLT_SUPPORT, 1,
7689 [Define if your linker supports -z bndplt])
7691 AC_MSG_RESULT($ld_bndplt_support)
7693 # Check linker supports '--push-state'/'--pop-state'
7694 ld_pushpopstate_support=no
7695 AC_MSG_CHECKING(linker --push-state/--pop-state options)
7696 if test x"$ld_is_gold" = xno; then
7697 if test $in_tree_ld = yes ; then
7698 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
7699 ld_pushpopstate_support=yes
7701 elif test x$gcc_cv_ld != x; then
7702 # Check if linker supports --push-state/--pop-state options
7703 if $gcc_cv_ld --help 2>&1 | grep -- '--push-state' > /dev/null; then
7704 ld_pushpopstate_support=yes
7708 if test x"$ld_pushpopstate_support" = xyes; then
7709 AC_DEFINE(HAVE_LD_PUSHPOPSTATE_SUPPORT, 1,
7710 [Define if your linker supports --push-state/--pop-state])
7712 AC_MSG_RESULT($ld_pushpopstate_support)
7714 # On s390, float_t has historically been statically defined as double for no
7715 # good reason. To comply with the C standard in the light of this definition,
7716 # gcc has evaluated float expressions in double precision when in
7717 # standards-compatible mode or when given -fexcess-precision=standard. To enable
7718 # a smooth transition towards the new model used by most architectures, where
7719 # gcc describes its behavior via the macro __FLT_EVAL_METHOD__ and glibc derives
7720 # float_t from that, this behavior can be configured with
7721 # --enable-s390-excess-float-precision. When given as enabled, that flag selects
7722 # the old model. When omitted, native builds and cross compiles that have target
7723 # libc headers will detect whether libc clamps float_t to double and in that
7724 # case maintain the old model. Otherwise, they will default to the new model.
7725 AC_ARG_ENABLE(s390-excess-float-precision,
7726 [AS_HELP_STRING([--enable-s390-excess-float-precision],
7727 [on s390 targets, evaluate float with double precision
7728 when in standards-conforming mode])],
7729 [],[enable_s390_excess_float_precision=auto])
7733 if test x"$enable_s390_excess_float_precision" = xauto; then
7734 # Can we autodetect the behavior of the target libc?
7735 if test "$target" = "$host" -a "$host" = "$build"; then
7736 enable_s390_excess_float_precision=autodetect
7737 elif test "x$with_headers" != xno; then
7738 # cross build. are target headers available?
7739 # carefully coerce the build-system compiler to use target headers
7740 saved_CXXFLAGS="$CXXFLAGS"
7741 fixed_XGCC_FLAGS_FOR_TARGET=`echo "$XGCC_FLAGS_FOR_TARGET" | sed 's/-B/-idirafter/g'`
7742 CROSS_TEST_CXXFLAGS="-nostdinc $fixed_XGCC_FLAGS_FOR_TARGET"
7743 CXXFLAGS="$CROSS_TEST_CXXFLAGS"
7744 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
7746 ]])], [enable_s390_excess_float_precision=autodetect], [])
7747 CXXFLAGS="$saved_CXXFLAGS"
7750 if test x"$enable_s390_excess_float_precision" = xautodetect; then
7751 saved_CXXFLAGS="$CXXFLAGS"
7752 if ! test "$target" = "$host" -a "$host" = "$build"; then
7753 CXXFLAGS="$CROSS_TEST_CXXFLAGS"
7754 unset CROSS_TEST_CXXFLAGS
7756 AC_CACHE_CHECK([for glibc clamping float_t to double],
7757 gcc_cv_float_t_clamped_to_double, [
7758 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
7759 #define __FLT_EVAL_METHOD__ 0
7761 int dummy[sizeof(float_t) == sizeof(double) ? 1 : -1];
7763 [gcc_cv_float_t_clamped_to_double=yes],
7764 [gcc_cv_float_t_clamped_to_double=no])])
7765 CXXFLAGS="$saved_CXXFLAGS"
7766 enable_s390_excess_float_precision="$gcc_cv_float_t_clamped_to_double"
7768 # no way to detect behavior of target libc, default to new model
7769 enable_s390_excess_float_precision=no
7773 GCC_TARGET_TEMPLATE(ENABLE_S390_EXCESS_FLOAT_PRECISION)
7774 if test x"$enable_s390_excess_float_precision" = xyes; then
7775 AC_DEFINE(ENABLE_S390_EXCESS_FLOAT_PRECISION, 1,
7776 [Define to enable evaluating float expressions with double precision in
7777 standards-compatible mode on s390 targets.])
7782 # Configure the subdirectories
7783 # AC_CONFIG_SUBDIRS($subdirs)
7785 # Create the Makefile
7786 # and configure language subdirectories
7787 AC_CONFIG_FILES($all_outputs)
7789 AC_CONFIG_COMMANDS([default],
7791 case ${CONFIG_HEADERS} in
7792 *auto-host.h:config.in*)
7795 # Make sure all the subdirs exist.
7796 for d in $subdirs doc build common c-family
7798 test -d $d || mkdir $d
7801 [subdirs='$subdirs'])