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"
2432 for f in $xm_file; do
2435 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
2436 xm_include_list="${xm_include_list} $f"
2439 xm_file_list="${xm_file_list} $f"
2440 xm_include_list="${xm_include_list} $f"
2443 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
2444 xm_include_list="${xm_include_list} config/$f"
2450 host_xm_include_list=
2451 for f in $host_xm_file; do
2454 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
2455 host_xm_include_list="${host_xm_include_list} $f"
2458 host_xm_file_list="${host_xm_file_list} $f"
2459 host_xm_include_list="${host_xm_include_list} $f"
2462 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
2463 host_xm_include_list="${host_xm_include_list} config/$f"
2469 for f in $build_xm_file; do
2472 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
2473 build_xm_include_list="${build_xm_include_list} $f"
2475 auto-build.h | auto-host.h )
2476 build_xm_file_list="${build_xm_file_list} $f"
2477 build_xm_include_list="${build_xm_include_list} $f"
2480 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
2481 build_xm_include_list="${build_xm_include_list} config/$f"
2486 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
2487 # cross-compiler which does not use the native headers and libraries.
2488 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
2489 CROSS= AC_SUBST(CROSS)
2490 ALL=all.internal AC_SUBST(ALL)
2491 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
2492 BUILD_SYSTEM_HEADER_DIR=$SYSTEM_HEADER_DIR AC_SUBST(BUILD_SYSTEM_HEADER_DIR)
2494 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x ||
2495 test x$build != x$host || test "x$with_build_sysroot" != x; then
2496 if test "x$with_build_sysroot" != x; then
2497 BUILD_SYSTEM_HEADER_DIR=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
2499 BUILD_SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2502 if test x$host != x$target
2504 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
2506 SYSTEM_HEADER_DIR=$BUILD_SYSTEM_HEADER_DIR
2507 elif test "x$TARGET_SYSTEM_ROOT" != x; then
2508 SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2511 if test "x$with_build_sysroot" != "x"; then
2512 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
2513 elif test "x$with_sysroot" = x; then
2514 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
2515 elif test "x$with_sysroot" = xyes; then
2516 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
2518 target_header_dir="${with_sysroot}${native_system_header_dir}"
2521 target_header_dir=${native_system_header_dir}
2524 # If this is a cross-compiler that does not
2525 # have its own set of headers then define
2528 # If this is using newlib, without having the headers available now,
2529 # then define inhibit_libc in LIBGCC2_CFLAGS.
2530 # This prevents libgcc2 from containing any code which requires libc
2532 : ${inhibit_libc=false}
2533 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
2534 test x$with_newlib = xyes ; } &&
2535 { test "x$with_headers" = xno || test ! -f "$target_header_dir/stdio.h"; } ; then
2538 AC_SUBST(inhibit_libc)
2540 # When building gcc with a cross-compiler, we need to adjust things so
2541 # that the generator programs are still built with the native compiler.
2542 # Also, we cannot run fixincludes.
2544 # These are the normal (build=host) settings:
2545 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
2546 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
2547 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
2548 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
2549 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
2550 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
2552 # And these apply if build != host, or we are generating coverage data
2553 if test x$build != x$host || test "x$coverage_flags" != x
2555 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS-$@) $(CFLAGS_FOR_BUILD)'
2556 BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS-$@) $(CXXFLAGS_FOR_BUILD)'
2557 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
2561 if test x$enable_fixincludes = xno;
2566 # Expand extra_headers to include complete path.
2567 # This substitutes for lots of t-* files.
2569 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
2570 for file in ${extra_headers} ; do
2571 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
2574 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
2575 if test x"$use_gcc_tgmath" = xyes
2576 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
2579 # Define collect2 in Makefile.
2580 case $host_can_use_collect2 in
2582 *) collect2='collect2$(exeext)' ;;
2584 AC_SUBST([collect2])
2586 # Add a definition of USE_COLLECT2 if system wants one.
2587 case $use_collect2 in
2588 no) use_collect2= ;;
2591 host_xm_defines="${host_xm_defines} USE_COLLECT2"
2592 xm_defines="${xm_defines} USE_COLLECT2"
2593 case $host_can_use_collect2 in
2595 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
2601 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
2602 [Define to the name of the LTO plugin DSO that must be
2603 passed to the linker's -plugin=LIB option.])
2605 # ---------------------------
2606 # Assembler & linker features
2607 # ---------------------------
2609 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
2610 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
2611 # However when ld-new is first executed from the build tree, libtool will
2612 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
2613 # to the build tree. While doing this we need to use the previous-stage
2614 # linker, or we have an infinite loop. The presence of a shell script as
2615 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
2616 # the gcc/collect-ld script. So we need to know how libtool works, or
2617 # exec-tool will fail.
2619 m4_defun([_LT_CONFIG_COMMANDS], [])
2622 AC_SUBST(enable_fast_install)
2624 # Identify the assembler which will work hand-in-glove with the newly
2625 # built GCC, so that we can examine its features. This is the assembler
2626 # which will be driven by the driver program.
2628 # If build != host, and we aren't building gas in-tree, we identify a
2629 # build->target assembler and hope that it will have the same features
2630 # as the host->target assembler we'll be using.
2631 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
2633 m4_pattern_allow([AS_FOR_TARGET])dnl
2634 AS_VAR_SET_IF(gcc_cv_as,, [
2635 if test -x "$DEFAULT_ASSEMBLER"; then
2636 gcc_cv_as="$DEFAULT_ASSEMBLER"
2637 elif test -f $gcc_cv_as_gas_srcdir/configure.ac \
2638 && test -f ../gas/Makefile \
2639 && test x$build = x$host; then
2640 gcc_cv_as=../gas/as-new$build_exeext
2641 elif test -x as$build_exeext; then
2642 # Build using assembler in the current directory.
2643 gcc_cv_as=./as$build_exeext
2644 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
2645 gcc_cv_as="$AS_FOR_TARGET"
2647 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
2650 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
2651 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
2652 case "$ORIGINAL_AS_FOR_TARGET" in
2653 ./as | ./as$build_exeext) ;;
2654 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2659 [[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]],
2660 [case "${enableval}" in
2666 install_gold_as_default=no
2668 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
2669 [case "${enableval}" in
2671 install_gold_as_default=yes
2674 if test x${default_ld} != x; then
2675 install_gold_as_default=yes
2681 AC_MSG_ERROR([invalid --enable-gold argument])
2685 # Identify the linker which will work hand-in-glove with the newly
2686 # built GCC, so that we can examine its features. This is the linker
2687 # which will be driven by the driver program.
2689 # If build != host, and we aren't building gas in-tree, we identify a
2690 # build->target linker and hope that it will have the same features
2691 # as the host->target linker we'll be using.
2692 gcc_cv_gld_major_version=
2693 gcc_cv_gld_minor_version=
2694 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2695 gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold
2696 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2698 AS_VAR_SET_IF(gcc_cv_ld,, [
2699 if test -x "$DEFAULT_LINKER"; then
2700 gcc_cv_ld="$DEFAULT_LINKER"
2701 elif test $install_gold_as_default = yes \
2702 && test -f $gcc_cv_ld_gold_srcdir/configure.ac \
2703 && test -f ../gold/Makefile \
2704 && test x$build = x$host; then
2705 gcc_cv_ld=../gold/ld-new$build_exeext
2706 elif test -f $gcc_cv_ld_gld_srcdir/configure.ac \
2707 && test -f ../ld/Makefile \
2708 && test x$build = x$host; then
2709 gcc_cv_ld=../ld/ld-new$build_exeext
2710 elif test -x collect-ld$build_exeext; then
2711 # Build using linker in the current directory.
2712 gcc_cv_ld=./collect-ld$build_exeext
2713 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2714 gcc_cv_ld="$LD_FOR_TARGET"
2716 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2719 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2720 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2721 # if the PLUGIN_LD is set ld-new, just have it as ld
2722 # as that is the installed named.
2723 if test x$PLUGIN_LD_SUFFIX = xld-new \
2724 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2727 AC_ARG_WITH(plugin-ld,
2728 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2729 [if test x"$withval" != x; then
2730 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2731 PLUGIN_LD_SUFFIX="$withval"
2733 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2734 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2736 # Check to see if we are using gold instead of ld
2737 AC_MSG_CHECKING(whether we are using gold)
2739 if test x$gcc_cv_ld != x; then
2740 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2741 | grep "GNU gold" > /dev/null; then
2745 AC_MSG_RESULT($ld_is_gold)
2747 # Check to see if we are using mold instead of ld
2748 AC_MSG_CHECKING(whether we are using mold)
2750 if test x$gcc_cv_ld != x; then
2751 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2752 | grep "mold" > /dev/null; then
2756 AC_MSG_RESULT($ld_is_mold)
2759 AC_MSG_CHECKING(gold linker with split stack support as non default)
2760 # Check to see if default ld is not gold, but gold is
2761 # available and has support for split stack. If gcc was configured
2762 # with gold then no checking is done.
2764 if test x$ld_is_gold = xno && which ${gcc_cv_ld}.gold >/dev/null 2>&1; then
2766 # For platforms other than powerpc64*, enable as appropriate.
2769 ld_gold=`which ${gcc_cv_ld}.gold`
2770 # Make sure this gold has minimal split stack support
2771 if $ld_gold --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then
2772 ld_vers=`$ld_gold --version | sed 1q`
2773 gold_vers=`echo $ld_vers | sed -n \
2774 -e 's,^[[^)]]*[[ ]]\([[0-9]][[0-9]]*\.[[0-9]][[0-9]]*[[^)]]*\)) .*$,\1,p'`
2776 # check that the gold version contains the complete split stack support
2777 # on powerpc64 big and little endian
2779 case "$gold_vers" in
2780 2.25.[[1-9]]*|2.2[[6-9]][[.0-9]]*|2.[[3-9]][[.0-9]]*|[[3-9]].[[.0-9]]*) gold_non_default=yes
2782 *) gold_non_default=no
2788 if test $gold_non_default = yes; then
2789 AC_DEFINE(HAVE_GOLD_NON_DEFAULT_SPLIT_STACK, 1,
2790 [Define if the gold linker supports split stack and is available as a non-default])
2793 AC_MSG_RESULT($gold_non_default)
2795 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2796 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2797 case "$ORIGINAL_LD_FOR_TARGET" in
2798 ./collect-ld | ./collect-ld$build_exeext) ;;
2799 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2802 AC_MSG_CHECKING(what linker to use)
2803 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2804 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2805 # Single tree build which includes ld. We want to prefer it
2806 # over whatever linker top-level may have detected, since
2807 # we'll use what we're building after installation anyway.
2808 AC_MSG_RESULT(newly built ld)
2810 in_tree_ld_is_elf=no
2811 if (grep 'EMUL = .*elf' ../ld/Makefile \
2812 || grep 'EMUL = .*linux' ../ld/Makefile \
2813 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2814 in_tree_ld_is_elf=yes
2815 elif test "$ld_is_gold" = yes; then
2816 in_tree_ld_is_elf=yes
2818 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
2821 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2822 if test x$gcc_cv_gld_version != x; then
2826 case $gcc_cv_gld_version in
2829 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2832 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2833 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2835 ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext
2836 ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext
2838 AC_MSG_RESULT($gcc_cv_ld)
2840 gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext`
2841 ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext
2842 ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext
2845 AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET)
2846 AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET)
2848 # Figure out what nm we will be using.
2849 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2850 AS_VAR_SET_IF(gcc_cv_nm,, [
2851 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2852 && test -f ../binutils/Makefile \
2853 && test x$build = x$host; then
2854 gcc_cv_nm=../binutils/nm-new$build_exeext
2855 elif test -x nm$build_exeext; then
2856 gcc_cv_nm=./nm$build_exeext
2857 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2858 gcc_cv_nm="$NM_FOR_TARGET"
2860 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2863 AC_MSG_CHECKING(what nm to use)
2864 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2865 # Single tree build which includes binutils.
2866 AC_MSG_RESULT(newly built nm)
2869 AC_MSG_RESULT($gcc_cv_nm)
2873 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2874 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2875 case "$ORIGINAL_NM_FOR_TARGET" in
2876 ./nm | ./nm$build_exeext) ;;
2877 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2881 # Figure out what objdump we will be using.
2882 AS_VAR_SET_IF(gcc_cv_objdump,, [
2883 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2884 && test -f ../binutils/Makefile \
2885 && test x$build = x$host; then
2886 # Single tree build which includes binutils.
2887 gcc_cv_objdump=../binutils/objdump$build_exeext
2888 elif test -x objdump$build_exeext; then
2889 gcc_cv_objdump=./objdump$build_exeext
2890 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2891 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2893 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2896 AC_MSG_CHECKING(what objdump to use)
2897 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2898 # Single tree build which includes binutils.
2899 AC_MSG_RESULT(newly built objdump)
2900 elif test x$gcc_cv_objdump = x; then
2901 AC_MSG_RESULT(not found)
2903 AC_MSG_RESULT($gcc_cv_objdump)
2906 # Figure out what readelf we will be using.
2907 AS_VAR_SET_IF(gcc_cv_readelf,, [
2908 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2909 && test -f ../binutils/Makefile \
2910 && test x$build = x$host; then
2911 # Single tree build which includes binutils.
2912 gcc_cv_readelf=../binutils/readelf$build_exeext
2913 elif test -x readelf$build_exeext; then
2914 gcc_cv_readelf=./readelf$build_exeext
2915 elif ( set dummy $READELF_FOR_TARGET; test -x $[2] ); then
2916 gcc_cv_readelf="$READELF_FOR_TARGET"
2918 AC_PATH_PROG(gcc_cv_readelf, $READELF_FOR_TARGET)
2921 AC_MSG_CHECKING(what readelf to use)
2922 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2923 # Single tree build which includes binutils.
2924 AC_MSG_RESULT(newly built readelf)
2925 elif test x$gcc_cv_readelf = x; then
2926 AC_MSG_RESULT(not found)
2928 AC_MSG_RESULT($gcc_cv_readelf)
2931 # Figure out what otool we will be using.
2932 AS_VAR_SET_IF(gcc_cv_otool,, [
2933 if test -x otool$build_exeext; then
2934 gcc_cv_otool=./otool$build_exeext
2935 elif ( set dummy $OTOOL_FOR_TARGET; test -x $[2] ); then
2936 gcc_cv_otool="$OTOOL_FOR_TARGET"
2938 AC_PATH_PROG(gcc_cv_otool, $OTOOL_FOR_TARGET)
2941 AC_MSG_CHECKING(what otool to use)
2942 if test x$gcc_cv_otool = x; then
2943 AC_MSG_RESULT(not found)
2945 AC_MSG_RESULT($gcc_cv_otool)
2948 # Figure out the dsymutil we will use.
2949 AS_VAR_SET_IF(gcc_cv_dsymutil,, [
2950 if test -x "$DEFAULT_DSYMUTIL"; then
2951 gcc_cv_dsymutil="$DEFAULT_DSYMUTIL"
2952 elif test -x dsymutil$build_exeext; then
2953 gcc_cv_dsymutil=./dsymutil$build_exeext
2954 elif ( set dummy $DSYMUTIL_FOR_TARGET; test -x $[2] ); then
2955 gcc_cv_dsymutil=$DSYMUTIL_FOR_TARGET
2956 elif ( set dummy $DSYMUTIL; test -x $[2] ); then
2957 gcc_cv_dsymutil=$DSYMUTIL
2959 AC_PATH_PROG(gcc_cv_dsymutil, $DSYMUTIL_FOR_TARGET)
2962 ORIGINAL_DSYMUTIL_FOR_TARGET=$gcc_cv_dsymutil
2963 AC_SUBST(ORIGINAL_DSYMUTIL_FOR_TARGET)
2964 case "$ORIGINAL_DSYMUTIL_FOR_TARGET" in
2965 ./dsymutil | ./dsymutil$build_exeext) ;;
2966 *) AC_CONFIG_FILES(dsymutil:exec-tool.in, [chmod +x dsymutil]) ;;
2969 # Figure out what assembler alignment features are present.
2970 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,,
2973 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2974 [Define if your assembler supports .balign and .p2align.])])
2976 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,,
2978 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2979 [Define if your assembler supports specifying the maximum number
2980 of bytes to skip when using the GAS .p2align command.])])
2982 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,,
2984 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2985 [Define if your assembler supports .literal16.])])
2987 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,,
2988 [conftest_label1: .word 0
2990 conftest_label2: .word 0
2992 [if test x$gcc_cv_nm != x; then
2993 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2994 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2995 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2997 else gcc_cv_as_subsection_m1=yes
2999 rm -f conftest.nm1 conftest.nm2
3001 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
3002 [Define if your assembler supports .subsection and .subsection -1 starts
3003 emitting at the beginning of your section.])])
3005 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,,
3007 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
3009 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,,
3010 [ .weakref foobar, barfnot],,
3011 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
3013 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,,
3015 .NSUBSPA $CODE$,COMDAT],,
3016 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
3018 # .hidden needs to be supported in both the assembler and the linker,
3019 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
3020 # This is irritatingly difficult to feature test for; we have to check the
3021 # date string after the version number. If we've got an in-tree
3022 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
3024 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
3027 conftest_s=' .globl foobar,hidden'
3030 conftest_s=' .hidden foobar
3034 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,, [$conftest_s])
3037 # Darwin as has some visibility support, though with a different syntax.
3038 gcc_cv_as_hidden=yes
3042 # gnu_indirect_function type is an extension proposed at
3043 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
3044 # selection of function implementation
3045 AC_ARG_ENABLE(gnu-indirect-function,
3046 [AS_HELP_STRING([--enable-gnu-indirect-function],
3047 [enable the use of the @gnu_indirect_function to glibc systems])],
3048 [case $enable_gnu_indirect_function in
3050 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
3051 Valid choices are 'yes' and 'no'.]) ;;
3053 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
3057 AC_MSG_CHECKING(linker ifunc IRELATIVE support)
3058 cat > conftest.s <<EOF
3060 .type foo_resolver, @function
3063 .size foo_resolver, .-foo_resolver
3066 .type foo, %gnu_indirect_function
3067 .set foo, foo_resolver
3070 .type bar, @function
3076 if test x$gcc_cv_as != x \
3077 && test x$gcc_cv_ld != x \
3078 && test x$gcc_cv_readelf != x \
3079 && $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
3080 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1 \
3081 && $gcc_cv_readelf --relocs --wide conftest \
3082 | grep R_RISCV_IRELATIVE > /dev/null 2>&1; then
3083 enable_gnu_indirect_function=yes
3085 rm -f conftest conftest.o conftest.s
3086 AC_MSG_RESULT($enable_gnu_indirect_function)
3090 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
3091 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
3092 [Define if your system supports gnu indirect functions.])
3096 if test $in_tree_ld != yes ; then
3097 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
3098 if echo "$ld_ver" | grep GNU > /dev/null; then
3099 if test x"$ld_is_gold" = xyes; then
3100 # GNU gold --version looks like this:
3102 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
3104 # We extract the binutils version which is more familiar and specific
3105 # than the gold version.
3106 ld_vers=`echo $ld_ver | sed -n \
3107 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3109 # GNU ld --version looks like this:
3111 # GNU ld (GNU Binutils) 2.21.51.20110225
3112 ld_vers=`echo $ld_ver | sed -n \
3113 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3115 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)\(-*\)\([01][0-9]\)\2\([0-3][0-9]\).*$,\1\3\4,p'`
3116 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3117 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3118 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
3122 # Solaris 2 ld -V output looks like this for a regular version:
3124 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
3126 # but test versions add stuff at the end:
3128 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
3130 # ld and ld.so.1 are guaranteed to be updated in lockstep, so ld version
3131 # numbers can be used in ld.so.1 feature checks even if a different
3132 # linker is configured.
3133 ld_ver=`$gcc_cv_ld -V 2>&1`
3134 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
3135 ld_vers=`echo $ld_ver | sed -n \
3136 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
3137 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3138 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3146 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
3147 [[if test $in_tree_ld = yes ; then
3149 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
3150 && test $in_tree_ld_is_elf = yes; then
3151 gcc_cv_ld_hidden=yes
3154 gcc_cv_ld_hidden=yes
3155 if test x"$ld_is_gold" = xyes; then
3157 elif test x"$ld_is_mold" = xyes; then
3159 elif echo "$ld_ver" | grep GNU > /dev/null; then
3160 if test 0"$ld_date" -lt 20020404; then
3161 if test -n "$ld_date"; then
3162 # If there was date string, but was earlier than 2002-04-04, fail
3164 elif test -z "$ld_vers"; then
3165 # If there was no date string nor ld version number, something is wrong
3168 test -z "$ld_vers_patch" && ld_vers_patch=0
3169 if test "$ld_vers_major" -lt 2; then
3171 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
3172 gcc_cv_ld_hidden="no"
3173 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
3181 gcc_cv_ld_hidden=yes
3184 # Darwin ld has some visibility support.
3185 gcc_cv_ld_hidden=yes
3187 hppa64*-*-hpux* | ia64*-*-hpux*)
3188 gcc_cv_ld_hidden=yes
3191 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
3192 # .symbolic was only added in Solaris 9 12/02.
3193 gcc_cv_ld_hidden=yes
3201 libgcc_visibility=no
3202 AC_SUBST(libgcc_visibility)
3203 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
3204 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
3205 libgcc_visibility=yes
3206 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
3207 [Define if your assembler and linker support .hidden.])
3210 AC_MSG_CHECKING(linker read-only and read-write section mixing)
3211 gcc_cv_ld_ro_rw_mix=unknown
3212 if test $in_tree_ld = yes ; then
3213 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
3214 && test $in_tree_ld_is_elf = yes; then
3215 gcc_cv_ld_ro_rw_mix=read-write
3217 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3218 echo '.section myfoosect, "a"' > conftest1.s
3219 echo '.section myfoosect, "aw"' > conftest2.s
3220 echo '.byte 1' >> conftest2.s
3221 echo '.section myfoosect, "a"' > conftest3.s
3222 echo '.byte 0' >> conftest3.s
3223 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
3224 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
3225 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1; then
3226 if $gcc_cv_ld -shared -o conftest1.so conftest1.o \
3227 conftest2.o conftest3.o > /dev/null 2>&1 \
3228 || $gcc_cv_ld -r -o conftest1.so conftest1.o \
3229 conftest2.o conftest3.o > /dev/null 2>&1; then
3230 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
3231 | sed -e '/myfoosect/!d' -e N`
3232 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
3233 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
3234 gcc_cv_ld_ro_rw_mix=read-only
3236 gcc_cv_ld_ro_rw_mix=read-write
3242 rm -f conftest.* conftest[123].*
3245 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
3246 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
3247 [Define if your linker links a mix of read-only
3248 and read-write sections into a read-write section.])
3250 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
3252 gcc_AC_INITFINI_ARRAY
3254 # Check if we have .[us]leb128, and support symbol arithmetic with it.
3255 # Older versions of GAS and some non-GNU assemblers, have a bugs handling
3256 # these directives, even when they appear to accept them.
3257 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,,
3264 .uleb128 0x8000000000000000
3267 if test "x$gcc_cv_objdump" != x; then
3268 if $gcc_cv_objdump -s conftest.o 2>/dev/null \
3269 | grep '04800a8e 78808080 80808080 808001' >/dev/null; then
3270 gcc_cv_as_leb128=yes
3272 elif test "x$gcc_cv_otool" != x; then
3273 if $gcc_cv_otool -d conftest.o 2>/dev/null \
3274 | grep '04 80 0a 8e 78 80 80 80 80 80 80 80 80 80 01' >/dev/null; then
3275 gcc_cv_as_leb128=yes
3278 # play safe, assume the assembler is broken.
3282 [AC_DEFINE(HAVE_AS_LEB128, 1,
3283 [Define if your assembler supports .sleb128 and .uleb128.])],
3284 [AC_DEFINE(HAVE_AS_LEB128, 0,
3285 [Define if your assembler supports .sleb128 and .uleb128.])])
3287 # Determine if an .eh_frame section is read-only.
3288 gcc_fn_eh_frame_ro () {
3289 $gcc_cv_as $1 -o conftest.o conftest.s > /dev/null 2>&1 && \
3290 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
3291 sed -e '/.eh_frame/!d' -e N | grep READONLY > /dev/null
3294 # Check if we have assembler support for unwind directives.
3295 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,,
3301 .cfi_escape 1, 2, 3, 4, 5
3305 # If the linker used on Solaris (like Sun ld) isn't capable of merging
3306 # read-only and read-write sections, we need to make sure that the
3307 # assembler used emits read-write .eh_frame sections.
3308 if test "x$gcc_cv_ld_ro_rw_mix" = xread-write; then
3309 gcc_cv_as_cfi_directive=yes
3310 elif test "x$gcc_cv_objdump" = x; then
3311 # No objdump, err on the side of caution.
3312 gcc_cv_as_cfi_directive=no
3314 if test x$gas = xyes; then
3322 sparc*-*-solaris2.*)
3323 # On Solaris/SPARC, .eh_frame sections should always be read-write.
3324 if gcc_fn_eh_frame_ro $as_32_opt \
3325 || gcc_fn_eh_frame_ro $as_64_opt; then
3326 gcc_cv_as_cfi_directive=no
3328 gcc_cv_as_cfi_directive=yes
3331 i?86-*-solaris2.* | x86_64-*-solaris2.*)
3332 # On Solaris/x86, make sure that GCC and assembler agree on using
3333 # read-only .eh_frame sections for 64-bit.
3334 if gcc_fn_eh_frame_ro $as_32_opt; then
3335 gcc_cv_as_cfi_directive=no
3336 elif gcc_fn_eh_frame_ro $as_64_opt; then
3337 gcc_cv_as_cfi_directive=yes
3339 gcc_cv_as_cfi_directive=no
3346 gcc_cv_as_cfi_directive=yes
3349 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
3350 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,,
3353 .cfi_adjust_cfa_offset 64
3355 .cfi_adjust_cfa_offset 128
3358 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
3359 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
3360 gcc_cv_as_cfi_advance_working=yes
3364 # no objdump, err on the side of caution
3365 gcc_cv_as_cfi_advance_working=no
3367 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
3368 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
3369 [`if test $gcc_cv_as_cfi_directive = yes \
3370 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
3371 [Define 0/1 if your assembler supports CFI directives.])
3373 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
3374 gcc_GAS_CHECK_FEATURE([cfi personality directive],
3375 gcc_cv_as_cfi_personality_directive,,
3378 .cfi_personality 0, symbol
3380 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
3381 [`if test $gcc_cv_as_cfi_personality_directive = yes; then echo 1; else echo 0; fi`],
3382 [Define 0/1 if your assembler supports .cfi_personality.])
3384 gcc_GAS_CHECK_FEATURE([cfi sections directive],
3385 gcc_cv_as_cfi_sections_directive,,
3387 .cfi_sections .debug_frame, .eh_frame
3391 win32 | pe | cygwin* | mingw32*)
3392 # Need to check that we generated the correct relocation for the
3393 # .debug_frame section. This was fixed for binutils 2.21.
3394 gcc_cv_as_cfi_sections_directive=no
3395 if test "x$gcc_cv_objdump" != x; then
3396 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
3397 grep -i secrel > /dev/null; then
3398 gcc_cv_as_cfi_sections_directive=yes
3403 gcc_cv_as_cfi_sections_directive=yes
3406 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
3407 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
3408 [`if test $gcc_cv_as_cfi_sections_directive = yes; then echo 1; else echo 0; fi`],
3409 [Define 0/1 if your assembler supports .cfi_sections.])
3411 # GAS versions up to and including 2.11.0 may mis-optimize
3413 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,,
3420 .section .eh_frame,"aw",@progbits
3422 .4byte .LECIE1-.LSCIE1
3436 .4byte .LEFDE1-.LASFDE1
3438 .4byte .LASFDE1-__FRAME_BEGIN__
3446 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
3447 cat > conftest.lit <<EOF
3448 0000 10000000 00000000 017a0001 781a0004 .........z..x...
3449 0010 01000000 12000000 18000000 00000000 ................
3450 0020 08000000 04080000 0044 .........D @&t@
3452 cat > conftest.big <<EOF
3453 0000 00000010 00000000 017a0001 781a0004 .........z..x...
3454 0010 00000001 00000012 00000018 00000000 ................
3455 0020 00000008 04000000 0844 .........D @&t@
3457 # If the assembler didn't choke, and we can objdump,
3458 # and we got the correct data, then succeed.
3459 # The text in the here-document typically retains its unix-style line
3460 # endings, while the output of objdump will use host line endings.
3461 # Therefore, use diff -b for the comparisons.
3462 if test x$gcc_cv_objdump != x \
3463 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
3464 | tail -3 > conftest.got \
3465 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
3466 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
3468 gcc_cv_as_eh_frame=yes
3469 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
3470 gcc_cv_as_eh_frame=buggy
3472 # Uh oh, what do we do now?
3473 gcc_cv_as_eh_frame=no
3476 if test $gcc_cv_as_eh_frame = buggy; then
3477 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
3478 [Define if your assembler mis-optimizes .eh_frame data.])
3481 # Test if the assembler supports the section flag 'e' or #exclude for
3482 # specifying an excluded section.
3483 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_e,
3487 if test $gcc_cv_as_section_exclude_e = no; then
3489 # Solaris as uses #exclude instead.
3493 conftest_s='.section "foo1", #exclude'
3495 i?86-*-solaris2* | x86_64-*-solaris2*)
3496 conftest_s='.section foo1, #exclude'
3501 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_hash,,
3505 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3506 [`if test $gcc_cv_as_section_exclude_e = yes || test $gcc_cv_as_section_exclude_hash = yes; then echo 1; else echo 0; fi`],
3507 [Define if your assembler supports specifying the exclude section flag.])
3509 # Test if the assembler supports the section flag 'R' for specifying
3510 # section with SHF_GNU_RETAIN.
3512 # Solaris may use GNU assembler with Solairs ld. Even if GNU
3513 # assembler supports the section flag 'R', it doesn't mean that
3514 # Solairs ld supports it.
3516 gcc_cv_as_shf_gnu_retain=no
3519 gcc_GAS_CHECK_FEATURE([section 'R' flag], gcc_cv_as_shf_gnu_retain,
3521 [.section .foo,"awR",%progbits
3525 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_GNU_RETAIN,
3526 [`if test $gcc_cv_as_shf_gnu_retain = yes; then echo 1; else echo 0; fi`],
3527 [Define 0/1 if your assembler supports marking sections with SHF_GNU_RETAIN flag.])
3529 # Test if the assembler supports the section flag 'o' for specifying
3530 # section with link-order.
3532 # Solaris may use GNU assembler with Solairs ld. Even if GNU
3533 # assembler supports the section flag 'o', it doesn't mean that
3534 # Solairs ld supports it.
3536 gcc_cv_as_section_link_order=no
3539 gcc_GAS_CHECK_FEATURE([section 'o' flag], gcc_cv_as_section_link_order,
3543 .section __patchable_function_entries,"awo",%progbits,.foo
3547 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_LINK_ORDER,
3548 [`if test $gcc_cv_as_section_link_order = yes; then echo 1; else echo 0; fi`],
3549 [Define 0/1 if your assembler supports 'o' flag in .section directive.])
3551 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
3553 [.section .rodata.str, "aMS", @progbits, 1])
3554 if test $gcc_cv_as_shf_merge = no; then
3555 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
3557 [.section .rodata.str, "aMS", %progbits, 1])
3559 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
3560 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
3561 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
3563 gcc_cv_ld_aligned_shf_merge=yes
3565 # SHF_MERGE support is broken in Solaris ld up to Solaris 11.3/SPARC for
3567 sparc*-*-solaris2.11*)
3568 if test x"$gnu_ld" = xno \
3569 && test "$ld_vers_major" -lt 2 && test "$ld_vers_minor" -lt 3159; then
3570 gcc_cv_ld_aligned_shf_merge=no
3574 AC_DEFINE_UNQUOTED(HAVE_LD_ALIGNED_SHF_MERGE,
3575 [`if test $gcc_cv_ld_aligned_shf_merge = yes; then echo 1; else echo 0; fi`],
3576 [Define 0/1 if your linker supports the SHF_MERGE flag with section alignment > 1.])
3578 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
3579 gcc_cv_as_comdat_group,
3581 [.section .text,"axG",@progbits,.foo,comdat])
3582 if test $gcc_cv_as_comdat_group = yes; then
3583 gcc_cv_as_comdat_group_percent=no
3584 gcc_cv_as_comdat_group_group=no
3586 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
3587 gcc_cv_as_comdat_group_percent,
3589 [.section .text,"axG",%progbits,.foo,comdat])
3590 if test $gcc_cv_as_comdat_group_percent = yes; then
3591 gcc_cv_as_comdat_group_group=no
3594 # Sun as uses a completely different syntax.
3599 .group foo,".text%foo",#comdat
3600 .section ".text%foo", #alloc,#execinstr,#progbits
3605 i?86-*-solaris2* | x86_64-*-solaris2*)
3607 .group foo,.text%foo,#comdat
3608 .section .text%foo, "ax", @progbits
3614 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
3615 gcc_cv_as_comdat_group_group,
3619 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
3620 gcc_cv_as_comdat_group_group=no
3624 if test x"$ld_is_gold" = xyes; then
3626 elif test x"$ld_is_mold" = xyes; then
3628 elif test $in_tree_ld = yes ; then
3630 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3631 && test $in_tree_ld_is_elf = yes; then
3634 elif echo "$ld_ver" | grep GNU > /dev/null; then
3636 if test 0"$ld_date" -lt 20050308; then
3637 if test -n "$ld_date"; then
3638 # If there was date string, but was earlier than 2005-03-08, fail
3640 elif test "$ld_vers_major" -lt 2; then
3642 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
3649 *-*-solaris2.1[1-9]*)
3651 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
3652 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
3655 # If using Sun as for COMDAT group as emitted by GCC, one needs at
3656 # least ld version 1.2267.
3657 if test "$ld_vers_major" -gt 1; then
3659 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
3661 elif test "$ld_vers_minor" -ge 2267; then
3666 # Assume linkers other than GNU ld don't support COMDAT group.
3672 # Allow overriding the automatic COMDAT group tests above.
3673 AC_ARG_ENABLE(comdat,
3674 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
3675 [comdat_group="$enable_comdat"])
3676 if test $comdat_group = no; then
3677 gcc_cv_as_comdat_group=no
3678 gcc_cv_as_comdat_group_percent=no
3679 gcc_cv_as_comdat_group_group=no
3681 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
3682 [`if test $gcc_cv_as_comdat_group = yes \
3683 || test $gcc_cv_as_comdat_group_percent = yes \
3684 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
3685 [Define 0/1 if your assembler and linker support COMDAT groups.])
3687 # Restrict this test to Solaris/x86: other targets define this statically.
3689 i?86-*-solaris2* | x86_64-*-solaris2*)
3690 AC_MSG_CHECKING(support for hidden thunks in linkonce sections)
3691 if test $in_tree_ld = yes || echo "$ld_ver" | grep GNU > /dev/null; then
3695 # Full support for hidden thunks in linkonce sections only appeared in
3696 # Solaris 11/OpenSolaris.
3697 *-*-solaris2.1[[1-9]]*)
3705 AC_MSG_RESULT($hidden_linkonce)
3706 AC_DEFINE_UNQUOTED(USE_HIDDEN_LINKONCE,
3707 [`if test $hidden_linkonce = yes; then echo 1; else echo 0; fi`],
3708 [Define 0/1 if your linker supports hidden thunks in linkonce sections.])
3712 gcc_GAS_CHECK_FEATURE([line table is_stmt support],
3716 .loc 1 1 0 is_stmt 1],,
3717 [AC_DEFINE(HAVE_GAS_LOC_STMT, 1,
3718 [Define if your assembler supports the .loc is_stmt sub-directive.])])
3720 gcc_GAS_CHECK_FEATURE([line table discriminator support],
3721 gcc_cv_as_discriminator,,
3724 .loc 1 1 0 discriminator 1],,
3725 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
3726 [Define if your assembler supports the .loc discriminator sub-directive.])])
3728 # Catch the newlib flag of the same name so we can gate GCC features on it.
3729 AC_ARG_ENABLE(newlib-nano-formatted-io,
3730 [AS_HELP_STRING([--enable-newlib-nano-formatted-io], [Use nano version
3732 [case "${enableval}" in
3736 AC_MSG_ERROR([unknown newlib-nano-formatted-io setting $enableval])
3740 # Thread-local storage - the check is heavily parameterized.
3747 .section ".tdata","awT",@progbits
3750 ldq $27,__tls_get_addr($29) !literal!1
3751 lda $16,foo($29) !tlsgd!1
3752 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
3753 ldq $27,__tls_get_addr($29) !literal!2
3754 lda $16,foo($29) !tlsldm!2
3755 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
3756 ldq $1,foo($29) !gotdtprel
3757 ldah $2,foo($29) !dtprelhi
3758 lda $3,foo($2) !dtprello
3759 lda $4,foo($29) !dtprel
3760 ldq $1,foo($29) !gottprel
3761 ldah $2,foo($29) !tprelhi
3762 lda $3,foo($2) !tprello
3763 lda $4,foo($29) !tprel'
3764 tls_as_opt=--fatal-warnings
3768 add_s r0,r0, @foo@tpoff'
3770 cris-*-*|crisv32-*-*)
3772 .section ".tdata","awT",@progbits
3777 tls_as_opt=--fatal-warnings
3781 .section ".tdata","awT",@progbits
3791 .section ".tdata","awT",@progbits
3795 addil LT%foo-$tls_gdidx$,gp
3796 ldo RT%foo-$tls_gdidx$(%r1),%arg0
3799 addil LT%foo-$tls_ldidx$,gp
3801 ldo RT%foo-$tls_ldidx$(%r1),%arg0
3802 addil LR%foo-$tls_dtpoff$,%ret0
3803 ldo RR%foo-$tls_dtpoff$(%r1),%t1
3805 addil LT%foo-$tls_ieoff$,gp
3806 ldw RT%foo-$tls_ieoff$(%r1),%t2
3809 addil LR%foo-$tls_leoff$,%t1
3810 ldo RR%foo-$tls_leoff$(%r1),%t2'
3811 tls_as_opt=--fatal-warnings
3815 .section ".tdata","awT",%progbits
3824 i[34567]86-*-* | x86_64-*-*)
3826 i[34567]86-*-solaris2.* | x86_64-*-solaris2.*)
3833 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3835 .section .tdata,"awt",@progbits'
3838 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
3839 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
3843 .section ".tdata","awT",@progbits'
3845 tls_as_opt="--fatal-warnings"
3849 if test x$on_solaris = xyes; then
3851 yes) tls_as_opt="$tls_as_opt --32" ;;
3854 conftest_s="$conftest_s
3858 leal foo@tlsgd(,%ebx,1), %eax
3859 leal foo@tlsldm(%ebx), %eax
3860 leal foo@dtpoff(%eax), %edx
3861 movl foo@gottpoff(%ebx), %eax
3862 subl foo@gottpoff(%ebx), %eax
3863 addl foo@gotntpoff(%ebx), %eax
3864 movl foo@indntpoff, %eax
3865 movl \$foo@tpoff, %eax
3866 subl \$foo@tpoff, %eax
3867 leal foo@ntpoff(%ecx), %eax"
3870 if test x$on_solaris = xyes; then
3872 yes) tls_as_opt="$tls_as_opt --64" ;;
3873 no) tls_as_opt="$tls_as_opt -xarch=amd64" ;;
3876 conftest_s="$conftest_s
3880 leaq foo@tlsgd(%rip), %rdi
3881 leaq foo@tlsld(%rip), %rdi
3882 leaq foo@dtpoff(%rax), %rdx
3883 movq foo@gottpoff(%rip), %rax
3884 movq \$foo@tpoff, %rax"
3890 .section ".tdata","awT",@progbits
3893 addl r16 = @ltoff(@dtpmod(foo#)), gp
3894 addl r17 = @ltoff(@dtprel(foo#)), gp
3895 addl r18 = @ltoff(@tprel(foo#)), gp
3896 addl r19 = @dtprel(foo#), gp
3897 adds r21 = @dtprel(foo#), r13
3898 movl r23 = @dtprel(foo#)
3899 addl r20 = @tprel(foo#), gp
3900 adds r22 = @tprel(foo#), r13
3901 movl r24 = @tprel(foo#)'
3902 tls_as_opt=--fatal-warnings
3906 .section .tdata,"awT",@progbits
3913 tls_as_opt='--fatal-warnings'
3917 .section .tdata,"awT",@progbits
3921 addik r5,r20,x@TLSGD
3922 addik r5,r20,x@TLSLDM'
3923 tls_as_opt='--fatal-warnings'
3927 .section .tdata,"awT",@progbits
3931 addiu $4, $28, %tlsgd(x)
3932 addiu $4, $28, %tlsldm(x)
3933 lui $4, %dtprel_hi(x)
3934 addiu $4, $4, %dtprel_lo(x)
3935 lw $4, %gottprel(x)($28)
3936 lui $4, %tprel_hi(x)
3937 addiu $4, $4, %tprel_lo(x)'
3938 tls_as_opt='-32 --fatal-warnings'
3942 .section .tdata,"awT",@progbits
3947 move.l x@TLSGD(%a5),%a0
3948 move.l x@TLSLDM(%a5),%a0
3949 move.l x@TLSLDO(%a5),%a0
3950 move.l x@TLSIE(%a5),%a0
3951 move.l x@TLSLE(%a5),%a0'
3952 tls_as_opt='--fatal-warnings'
3956 .section ".tdata","awT",@progbits'
3957 tls_as_opt="--fatal-warnings"
3961 .section ".tdata","awT",%progbits
3965 add x0, x0, #:tlsgd_lo12:x
3968 tls_as_opt='--fatal-warnings'
3972 .section ".tdata","awT",@progbits
3975 l.movhi r3, tpoffha(foo)
3977 l.lwz r4, tpofflo(foo)(r3)'
3978 tls_as_opt=--fatal-warnings
3982 .extern __get_tpointer
3998 .section ".tdata","awT",@progbits
4006 addi 3,2,ld0@got@tlsgd
4012 addi 3,2,x1@got@tlsld
4018 addis 9,3,x2@dtprel@ha
4019 addi 9,9,x2@dtprel@l
4022 ld 9,x3@got@dtprel(2)
4026 tls_as_opt="-a64 --fatal-warnings"
4030 .section ".tdata","awT",@progbits
4038 addi 3,31,ld0@got@tlsgd
4040 addi 3,31,x1@got@tlsld
4043 addis 9,3,x2@dtprel@ha
4044 addi 9,9,x2@dtprel@l
4045 lwz 9,x3@got@tprel(31)
4048 addis 9,2,x2@tprel@ha
4049 addi 9,9,x2@tprel@l'
4050 tls_as_opt="-a32 --fatal-warnings"
4054 .section .tdata,"awT",@progbits
4058 call __tls_get_addr'
4059 tls_as_opt='--fatal-warnings'
4063 .section ".tdata","awT",@progbits
4072 l %r1,foo@GOTNTPOFF(%r12)
4073 l %r1,0(%r1):tls_load:foo
4074 bas %r14,0(%r1,%r13):tls_gdcall:foo
4075 bas %r14,0(%r1,%r13):tls_ldcall:foo'
4076 tls_as_opt="-m31 --fatal-warnings"
4080 .section ".tdata","awT",@progbits
4088 lg %r1,foo@GOTNTPOFF(%r12)
4089 larl %r1,foo@INDNTPOFF
4090 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
4091 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
4092 tls_as_opt="-m64 -Aesame --fatal-warnings"
4094 sh-*-* | sh[123456789lbe]*-*-*)
4096 .section ".tdata","awT",@progbits
4104 tls_as_opt=--fatal-warnings
4108 sparc*-sun-solaris2.*)
4115 if test x$on_solaris = xyes && test x$gas_flag = xno; then
4117 .section ".tdata",#alloc,#write,#tls'
4120 .section ".tdata","awT",@progbits'
4121 tls_as_opt="-32 --fatal-warnings"
4123 conftest_s="$conftest_s
4126 sethi %tgd_hi22(foo), %o0
4127 add %o0, %tgd_lo10(foo), %o1
4128 add %l7, %o1, %o0, %tgd_add(foo)
4129 call __tls_get_addr, %tgd_call(foo)
4130 sethi %tldm_hi22(foo), %l1
4131 add %l1, %tldm_lo10(foo), %l2
4132 add %l7, %l2, %o0, %tldm_add(foo)
4133 call __tls_get_addr, %tldm_call(foo)
4134 sethi %tldo_hix22(foo), %l3
4135 xor %l3, %tldo_lox10(foo), %l4
4136 add %o0, %l4, %l5, %tldo_add(foo)
4137 sethi %tie_hi22(foo), %o3
4138 add %o3, %tie_lo10(foo), %o3
4139 ld [%l7 + %o3], %o2, %tie_ld(foo)
4140 add %g7, %o2, %o4, %tie_add(foo)
4141 sethi %tle_hix22(foo), %l1
4142 xor %l1, %tle_lox10(foo), %o5
4143 ld [%g7 + %o5], %o1"
4147 .section ".tdata","awT",@progbits
4150 movi a8, foo@TLSFUNC
4151 movi a10, foo@TLSARG
4152 callx8.tls a8, foo@TLSCALL'
4157 if test "x$enable_tls" = xno ; then
4158 : # TLS explicitly disabled.
4159 elif test "x$enable_tls" = xyes ; then
4160 set_have_as_tls=yes # TLS explicitly enabled.
4161 elif test -z "$conftest_s"; then
4162 : # If we don't have a check, assume no support.
4164 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
4165 [$tls_as_opt], [$conftest_s],,
4166 [set_have_as_tls=yes])
4168 if test $set_have_as_tls = yes ; then
4169 AC_DEFINE(HAVE_AS_TLS, 1,
4170 [Define if your assembler and linker support thread-local storage.])
4173 # Target-specific assembler checks.
4175 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
4176 gcc_cv_ld_static_dynamic=no
4177 gcc_cv_ld_static_option='-Bstatic'
4178 gcc_cv_ld_dynamic_option='-Bdynamic'
4179 if test $in_tree_ld = yes ; then
4180 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
4181 gcc_cv_ld_static_dynamic=yes
4183 elif test x$gcc_cv_ld != x; then
4184 # Check if linker supports -Bstatic/-Bdynamic option
4185 if $gcc_cv_ld --help 2>&1 | grep -- -Bstatic > /dev/null \
4186 && $gcc_cv_ld --help 2>&1 | grep -- -Bdynamic > /dev/null; then
4187 gcc_cv_ld_static_dynamic=yes
4190 # AIX ld uses -b flags
4191 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
4192 gcc_cv_ld_static_dynamic=yes
4193 gcc_cv_ld_static_option="-bstatic"
4194 gcc_cv_ld_dynamic_option="-bdynamic"
4196 # HP-UX ld uses -a flags to select between shared and archive.
4198 if test x"$gnu_ld" = xno; then
4199 gcc_cv_ld_static_dynamic=yes
4200 gcc_cv_ld_static_option="-aarchive_shared"
4201 gcc_cv_ld_dynamic_option="-adefault"
4204 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
4206 gcc_cv_ld_static_dynamic=yes
4211 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
4212 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
4213 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
4214 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
4215 [Define to the linker option to disable use of shared objects.])
4216 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
4217 [Define to the linker option to enable use of shared objects.])
4219 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
4221 AC_MSG_CHECKING(linker --version-script option)
4222 gcc_cv_ld_version_script=no
4223 ld_version_script_option=''
4224 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
4225 gcc_cv_ld_version_script=yes
4226 ld_version_script_option='--version-script'
4227 elif test x$gcc_cv_ld != x; then
4229 # Solaris 2 ld always supports -M. It also supports a subset of
4230 # --version-script since Solaris 11.4, but requires
4231 # -z gnu-version-script-compat to activate.
4233 gcc_cv_ld_version_script=yes
4234 ld_version_script_option='-M'
4238 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
4239 AC_MSG_RESULT($gcc_cv_ld_version_script)
4240 AC_SUBST(ld_version_script_option)
4242 AC_MSG_CHECKING(linker soname option)
4244 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
4245 gcc_cv_ld_soname=yes
4246 ld_soname_option='-soname'
4247 elif test x$gcc_cv_ld != x; then
4250 gcc_cv_ld_soname=yes
4251 ld_soname_option='-install_name'
4253 # Solaris 2 ld always supports -h. It also supports --soname for GNU
4254 # ld compatiblity since some Solaris 10 update.
4256 gcc_cv_ld_soname=yes
4257 ld_soname_option='-h'
4261 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
4262 AC_MSG_RESULT($gcc_cv_ld_soname)
4263 AC_SUBST(ld_soname_option)
4265 if test x"$demangler_in_ld" = xyes; then
4266 AC_MSG_CHECKING(linker --demangle support)
4267 gcc_cv_ld_demangle=no
4268 if test $in_tree_ld = yes; then
4269 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
4270 gcc_cv_ld_demangle=yes
4272 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
4273 # Check if the GNU linker supports --demangle option
4274 if $gcc_cv_ld --help 2>&1 | grep no-demangle > /dev/null; then
4275 gcc_cv_ld_demangle=yes
4278 if test x"$gcc_cv_ld_demangle" = xyes; then
4279 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
4280 [Define if your linker supports --demangle option.])
4282 AC_MSG_RESULT($gcc_cv_ld_demangle)
4285 AC_MSG_CHECKING(linker plugin support)
4287 if test -f liblto_plugin.la; then
4288 save_ld_ver="$ld_ver"
4289 save_ld_vers_major="$ld_vers_major"
4290 save_ld_vers_minor="$ld_vers_minor"
4291 save_ld_is_gold="$ld_is_gold"
4295 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
4297 # FIXME: ld_is_gold?
4298 ld_vers_major="$gcc_cv_gld_major_version"
4299 ld_vers_minor="$gcc_cv_gld_minor_version"
4301 # Determine plugin linker version.
4302 # FIXME: Partial duplicate from above, generalize.
4304 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
4305 if echo "$ld_ver" | grep GNU > /dev/null; then
4306 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
4308 ld_vers=`echo $ld_ver | sed -n \
4309 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
4311 ld_vers=`echo $ld_ver | sed -n \
4312 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
4314 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
4315 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
4320 # Determine plugin support.
4321 if echo "$ld_ver" | grep GNU > /dev/null; then
4322 # Require GNU ld or gold 2.21+ for plugin support by default.
4323 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
4325 elif test "$ld_is_mold" = yes; then
4327 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
4328 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
4333 ld_ver="$save_ld_ver"
4334 ld_vers_major="$save_ld_vers_major"
4335 ld_vers_minor="$save_ld_vers_minor"
4336 ld_is_gold="$save_ld_is_gold"
4338 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
4339 [Define to the level of your linker's plugin support.])
4340 AC_MSG_RESULT($gcc_cv_lto_plugin)
4342 # Target OS-specific assembler checks.
4344 case "$target_os" in
4346 gcc_GAS_CHECK_FEATURE([-mmacosx-version-min option],
4347 gcc_cv_as_mmacosx_version_min,
4348 [-mmacosx-version-min=10.1], [.text],,
4349 [AC_DEFINE(HAVE_AS_MMACOSX_VERSION_MIN_OPTION, 1,
4350 [Define if your macOS assembler supports the -mmacos-version-min option.])])
4354 # Target CPU-specific assembler checks.
4358 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,
4359 [-mabi=lp64], [.text],,,)
4360 if test x$gcc_cv_as_aarch64_mabi = xyes; then
4361 AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
4362 [Define if your assembler supports the -mabi option.])
4364 if test x$with_abi = xilp32; then
4365 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
4366 Upgrade the Assembler.])
4368 if test x"$with_multilib_list" = xdefault; then
4369 TM_MULTILIB_CONFIG=lp64
4371 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
4372 for aarch64_multilib in ${aarch64_multilibs}; do
4373 case ${aarch64_multilib} in
4375 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
4376 Upgrade the Assembler.])
4384 # Check if we have binutils support for relocations types needed by -fpic
4385 gcc_GAS_CHECK_FEATURE([-fpic relocs], gcc_cv_as_aarch64_picreloc,,
4388 ldr x0, [[x2, #:gotpage_lo15:globalsym]]
4389 ],,[AC_DEFINE(HAVE_AS_SMALL_PIC_RELOCS, 1,
4390 [Define if your assembler supports relocs needed by -fpic.])])
4391 # Enable Branch Target Identification Mechanism and Return Address
4392 # Signing by default.
4393 AC_ARG_ENABLE(standard-branch-protection,
4395 AS_HELP_STRING([--enable-standard-branch-protection],
4396 [enable Branch Target Identification Mechanism and Return Address Signing by default for AArch64])
4397 AS_HELP_STRING([--disable-standard-branch-protection],
4398 [disable Branch Target Identification Mechanism and Return Address Signing by default for AArch64])
4403 tm_defines="${tm_defines} TARGET_ENABLE_BTI=1 TARGET_ENABLE_PAC_RET=1"
4408 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-standard-branch-protection.\
4409 Valid choices are 'yes' and 'no'.])
4414 # Enable default workaround for AArch64 Cortex-A53 erratum 835769.
4415 AC_ARG_ENABLE(fix-cortex-a53-835769,
4417 AS_HELP_STRING([--enable-fix-cortex-a53-835769],
4418 [enable workaround for AArch64 Cortex-A53 erratum 835769 by default])
4419 AS_HELP_STRING([--disable-fix-cortex-a53-835769],
4420 [disable workaround for AArch64 Cortex-A53 erratum 835769 by default])
4425 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1"
4430 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\
4431 Valid choices are 'yes' and 'no'.])
4437 # Enable default workaround for AArch64 Cortex-A53 erratum 843419.
4438 AC_ARG_ENABLE(fix-cortex-a53-843419,
4440 AS_HELP_STRING([--enable-fix-cortex-a53-843419],
4441 [enable workaround for AArch64 Cortex-A53 erratum 843419 by default])
4442 AS_HELP_STRING([--disable-fix-cortex-a53-843419],
4443 [disable workaround for AArch64 Cortex-A53 erratum 843419 by default])
4448 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1"
4453 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\
4454 Valid choices are 'yes' and 'no'.])
4462 # All TARGET_ABI_OSF targets.
4463 alpha*-*-linux* | alpha*-*-*bsd*)
4464 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4465 gcc_cv_as_alpha_explicit_relocs,,
4468 extbl $3, $2, $3 !lituse_bytoff!1
4469 ldq $2, a($29) !literal!1
4470 ldq $4, b($29) !literal!2
4471 ldq_u $3, 0($2) !lituse_base!1
4472 ldq $27, f($29) !literal!5
4473 jsr $26, ($27), f !lituse_jsr!5
4474 ldah $29, 0($26) !gpdisp!3
4475 lda $0, c($29) !gprel
4476 ldah $1, d($29) !gprelhigh
4477 lda $1, d($1) !gprellow
4478 lda $29, 0($29) !gpdisp!3],,
4479 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
4480 [Define if your assembler supports explicit relocations.])])
4481 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
4482 gcc_cv_as_alpha_jsrdirect_relocs,,
4485 ldq $27, a($29) !literal!1
4486 jsr $26, ($27), a !lituse_jsrdirect!1],,
4487 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
4488 [Define if your assembler supports the lituse_jsrdirect relocation.])])
4492 gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax,
4493 [--mlink-relax], [.text],,
4494 [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1,
4495 [Define if your avr assembler supports --mlink-relax option.])])
4497 gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,
4499 [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1,
4500 [Define if your avr assembler supports -mrmw option.])])
4502 gcc_GAS_CHECK_FEATURE([__gcc_isr pseudo instruction],
4503 gcc_cv_as_avr_mgccisr,
4509 [AC_DEFINE(HAVE_AS_AVR_MGCCISR_OPTION, 1,
4510 [Define if your avr assembler supports -mgcc-isr option.])])
4512 # Check how default linker description file implements .rodata for
4513 # avrxmega3 (PR21472). avr-gcc assumes .rodata is *not* loaded to
4514 # RAM so avr-gcc skips __do_copy_data for .rodata objects.
4515 AC_MSG_CHECKING(binutils for avrxmega3 .rodata support)
4516 cat > conftest.s <<EOF
4517 .section .rodata,"a",@progbits
4519 ;; avr-nm should print "... R xxvaryy", not "... D xxvaryy".
4524 AC_TRY_COMMAND([$gcc_cv_as -mmcu=avrxmega3 conftest.s -o conftest.o])
4525 AC_TRY_COMMAND([$gcc_cv_ld -mavrxmega3 conftest.o -o conftest.elf])
4526 AC_TRY_COMMAND([$gcc_cv_nm conftest.elf > conftest.nm])
4527 if test -s conftest.nm
4529 if grep ' R xxvaryy' conftest.nm > /dev/null; then
4531 AC_DEFINE(HAVE_LD_AVR_AVRXMEGA3_RODATA_IN_FLASH, 1,
4532 [Define if your default avr linker script for avrxmega3 leaves .rodata in flash.])
4534 AC_MSG_RESULT(no: avrxmega3 .rodata located in RAM)
4535 echo "$as_me: nm output was" >&AS_MESSAGE_LOG_FD
4536 cat conftest.nm >&AS_MESSAGE_LOG_FD
4537 avr_ld_ver="`$gcc_cv_ld -v | sed -e 's:^.* ::'`"
4538 AC_MSG_WARN([[support for avrxmega3 .rodata in flash needs Binutils 2.29 or higher (have $avr_ld_ver)]])
4541 AC_MSG_RESULT(test failed)
4542 echo "$as_me: failed program was" >&AS_MESSAGE_LOG_FD
4543 cat conftest.s >&AS_MESSAGE_LOG_FD
4544 AC_MSG_WARN([[see `config.log' for details]])
4546 rm -f conftest.s conftest.o conftest.elf conftest.nm
4550 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
4551 gcc_cv_as_cris_no_mul_bug,
4552 [-no-mul-bug-abort], [.text],,
4553 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
4554 [Define if your assembler supports the -no-mul-bug-abort option.])])
4558 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,
4560 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
4561 [Define if your assembler supports -relax option.])])
4563 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
4564 gcc_cv_as_sparc_gotdata_op,
4571 sethi %gdop_hix22(foo), %g1
4572 xor %g1, %gdop_lox10(foo), %g1
4573 ld [[%l7 + %g1]], %g2, %gdop(foo)],
4574 [if test x$gcc_cv_ld != x \
4575 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4576 if test x$gcc_cv_objdump != x; then
4577 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
4578 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
4579 gcc_cv_as_sparc_gotdata_op=no
4581 gcc_cv_as_sparc_gotdata_op=yes
4586 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
4587 [Define if your assembler and linker support GOTDATA_OP relocs.])])
4589 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
4590 gcc_cv_as_sparc_ua_pcrel,
4598 .uaword %r_disp32(foo)],
4599 [if test x$gcc_cv_ld != x \
4600 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4601 gcc_cv_as_sparc_ua_pcrel=yes
4604 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
4605 [Define if your assembler and linker support unaligned PC relative relocs.])
4607 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
4608 gcc_cv_as_sparc_ua_pcrel_hidden,
4613 .uaword %r_disp32(foo)
4614 .byte 0x32, 0x33, 0x34
4619 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4620 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
4621 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
4622 | grep ' 31000000 07323334' > /dev/null 2>&1; then
4623 if $gcc_cv_objdump -R conftest 2> /dev/null \
4624 | grep 'DISP32' > /dev/null 2>&1; then
4627 gcc_cv_as_sparc_ua_pcrel_hidden=yes
4631 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
4632 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
4633 ]) # unaligned pcrel relocs
4635 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
4636 gcc_cv_as_sparc_offsetable_lo10,
4639 or %g1, %lo(ab) + 12, %g1
4640 or %g1, %lo(ab + 12), %g1],
4641 [if test x$gcc_cv_objdump != x \
4642 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
4643 | grep ' 82106000 82106000' > /dev/null 2>&1; then
4644 gcc_cv_as_sparc_offsetable_lo10=yes
4646 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
4647 [Define if your assembler supports offsetable %lo().])])
4649 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
4650 gcc_cv_as_sparc_fmaf,
4653 .register %g2, #scratch
4654 .register %g3, #scratch
4656 fmaddd %f0, %f2, %f4, %f6
4657 addxccc %g1, %g2, %g3
4658 fsrl32 %f2, %f4, %f8
4659 fnaddd %f10, %f12, %f14],,
4660 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
4661 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
4663 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
4664 gcc_cv_as_sparc_sparc4,
4667 .register %g2, #scratch
4668 .register %g3, #scratch
4671 1: cwbneg %g2, %g3, 1f
4674 aes_kexpand0 %f4, %f6, %f8
4675 des_round %f38, %f40, %f42, %f44
4676 camellia_f %f54, %f56, %f58, %f60
4677 kasumi_fi_xor %f46, %f48, %f50, %f52],,
4678 [AC_DEFINE(HAVE_AS_SPARC4, 1,
4679 [Define if your assembler supports SPARC4 instructions.])])
4681 gcc_GAS_CHECK_FEATURE([SPARC5 and VIS 4.0 instructions],
4682 gcc_cv_as_sparc_sparc5,
4685 .register %g2, #scratch
4686 .register %g3, #scratch
4689 fpadd8 %f0, %f2, %f4],,
4690 [AC_DEFINE(HAVE_AS_SPARC5_VIS4, 1,
4691 [Define if your assembler supports SPARC5 and VIS 4.0 instructions.])])
4693 gcc_GAS_CHECK_FEATURE([SPARC6 instructions],
4694 gcc_cv_as_sparc_sparc6,
4697 .register %g2, #scratch
4698 .register %g3, #scratch
4701 fpsll64x %f0, %f2, %f4],,
4702 [AC_DEFINE(HAVE_AS_SPARC6, 1,
4703 [Define if your assembler supports SPARC6 instructions.])])
4705 gcc_GAS_CHECK_FEATURE([LEON instructions],
4706 gcc_cv_as_sparc_leon,
4709 .register %g2, #scratch
4710 .register %g3, #scratch
4714 casa [[%g2]] 0xb, %g3, %g1],,
4715 [AC_DEFINE(HAVE_AS_LEON, 1,
4716 [Define if your assembler supports LEON instructions.])])
4720 i[34567]86-*-* | x86_64-*-*)
4724 # Full C++ conformance when using a shared libstdc++-v3 requires some
4725 # support from the Cygwin DLL, which in more recent versions exports
4726 # wrappers to aid in interposing and redirecting operators new, delete,
4727 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
4728 # are configuring for a version of Cygwin that exports the wrappers.
4729 if test x$host = x$target && test x$host_cpu = xi686; then
4730 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
4732 # Can't check presence of libc functions during cross-compile, so
4733 # we just have to assume we're building for an up-to-date target.
4734 gcc_ac_cygwin_dll_wrappers=yes
4736 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
4737 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
4738 [Define if you want to generate code by default that assumes that the
4739 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
4742 cygwin* | pe | mingw32*)
4743 # Recent binutils allows the three-operand form of ".comm" on PE. This
4744 # definition is used unconditionally to initialise the default state of
4745 # the target option variable that governs usage of the feature.
4746 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,,
4748 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
4749 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
4750 [Define if your assembler supports specifying the alignment
4751 of objects allocated using the GAS .comm command.])
4752 # Used for DWARF 2 in PE
4753 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
4754 gcc_cv_as_ix86_pe_secrel32,,
4759 [if test x$gcc_cv_ld != x \
4760 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
4761 gcc_cv_as_ix86_pe_secrel32=yes
4764 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
4765 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
4766 # Test if the assembler supports the extended form of the .section
4767 # directive that specifies section alignment. LTO support uses this,
4768 # but normally only after installation, so we warn but don't fail the
4769 # configure if LTO is enabled but the assembler does not support it.
4770 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
4771 -fatal-warnings,[.section lto_test,"dr0"])
4772 if test x$gcc_cv_as_section_has_align != xyes; then
4773 case ",$enable_languages," in
4775 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
4782 darwin2* | darwin19*)
4783 gcc_GAS_CHECK_FEATURE([llvm assembler x86-pad-for-align option],
4784 gcc_cv_as_mllvm_x86_pad_for_align,
4785 [-mllvm -x86-pad-for-align=false], [.text],,
4786 [AC_DEFINE(HAVE_AS_MLLVM_X86_PAD_FOR_ALIGN, 1,
4787 [Define if your macOS assembler supports -mllvm -x86-pad-for-align=false.])])
4791 gcc_GAS_CHECK_FEATURE([-xbrace_comment], gcc_cv_as_ix86_xbrace_comment,
4792 [-xbrace_comment=no], [.text],,
4793 [AC_DEFINE(HAVE_AS_XBRACE_COMMENT_OPTION, 1,
4794 [Define if your assembler supports -xbrace_comment option.])])
4796 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
4797 gcc_cv_as_ix86_filds,,
4798 [filds (%ebp); fists (%ebp)],,
4799 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
4800 [Define if your assembler uses filds and fists mnemonics.])])
4802 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
4803 gcc_cv_as_ix86_fildq,,
4804 [fildq (%ebp); fistpq (%ebp)],,
4805 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
4806 [Define if your assembler uses fildq and fistq mnemonics.])])
4808 gcc_GAS_CHECK_FEATURE([cmov syntax],
4809 gcc_cv_as_ix86_cmov_sun_syntax,,
4810 [cmovl.l %edx, %eax],,
4811 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
4812 [Define if your assembler supports the Sun syntax for cmov.])])
4814 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
4815 gcc_cv_as_ix86_ffreep,,
4817 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
4818 [Define if your assembler supports the ffreep mnemonic.])])
4820 gcc_GAS_CHECK_FEATURE([.quad directive],
4821 gcc_cv_as_ix86_quad,,
4823 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
4824 [Define if your assembler supports the .quad directive.])])
4826 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
4827 gcc_cv_as_ix86_sahf,,
4830 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
4831 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
4833 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
4834 gcc_cv_as_ix86_interunit_movq,,
4838 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
4839 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
4840 [Define if your assembler supports interunit movq mnemonic.])
4842 gcc_GAS_CHECK_FEATURE([hle prefixes],
4843 gcc_cv_as_ix86_hle,,
4844 [lock xacquire cmpxchg %esi, (%ecx)],,
4845 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
4846 [Define if your assembler supports HLE prefixes.])])
4848 gcc_GAS_CHECK_FEATURE([swap suffix],
4849 gcc_cv_as_ix86_swap,,
4850 [movl.s %esp, %ebp],,
4851 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
4852 [Define if your assembler supports the swap suffix.])])
4854 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
4855 gcc_cv_as_ix86_diff_sect_delta,,
4863 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
4864 [Define if your assembler supports the subtraction of symbols in different sections.])])
4866 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
4867 gcc_cv_as_ix86_rep_lock_prefix,,
4873 lock addl %edi, (%eax,%esi)
4874 lock orl $0, (%esp)],,
4875 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
4876 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
4878 gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
4879 gcc_cv_as_ix86_ud2,,
4881 [AC_DEFINE(HAVE_AS_IX86_UD2, 1,
4882 [Define if your assembler supports the 'ud2' mnemonic.])])
4884 # Enforce 32-bit output with gas and gld.
4885 if test x$gas = xyes; then
4886 as_ix86_gas_32_opt="--32"
4888 if echo "$ld_ver" | grep GNU > /dev/null; then
4889 if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then
4890 ld_ix86_gld_32_opt="-melf_i386_sol2"
4892 ld_ix86_gld_32_opt="-melf_i386"
4896 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
4897 gcc_cv_as_ix86_tlsgdplt,
4898 [$as_ix86_gas_32_opt],
4899 [call tls_gd@tlsgdplt],
4900 [if test x$gcc_cv_ld != x \
4901 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4902 gcc_cv_as_ix86_tlsgdplt=yes
4905 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
4906 [Define if your assembler and linker support @tlsgdplt.])])
4909 .section .tdata,"aw'$tls_section_flag'",@progbits
4911 .section .text,"ax",@progbits
4912 call tls_ld@tlsldmplt'
4914 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
4915 gcc_cv_as_ix86_tlsldmplt,
4916 [$as_ix86_gas_32_opt],
4918 [if test x$gcc_cv_ld != x \
4919 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4920 gcc_cv_as_ix86_tlsldmplt=yes
4923 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT,
4924 [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`],
4925 [Define to 1 if your assembler and linker support @tlsldmplt.])
4928 .section .text,"ax",@progbits
4930 .type _start, @function
4932 leal value@tlsldm(%ebx), %eax
4933 call ___tls_get_addr@plt
4935 .section .tdata,"aw'$tls_section_flag'",@progbits
4936 .type value, @object
4938 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc],
4939 gcc_cv_as_ix86_tlsldm,
4940 [$as_ix86_gas_32_opt],
4942 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4943 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then
4944 if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \
4945 || dis conftest 2>/dev/null | grep nop > /dev/null; then
4946 gcc_cv_as_ix86_tlsldm=yes
4950 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM,
4951 [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`],
4952 [Define to 1 if your assembler and linker support @tlsldm.])
4963 gcc_GAS_CHECK_FEATURE([R_386_GOT32X reloc],
4964 gcc_cv_as_ix86_got32x,
4965 [$as_ix86_gas_32_opt],
4967 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4968 && test x$gcc_cv_readelf != x \
4969 && $gcc_cv_readelf --relocs --wide conftest.o 2>&1 \
4970 | grep R_386_GOT32X > /dev/null 2>&1 \
4971 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4972 if $gcc_cv_objdump -dw conftest 2>&1 \
4973 | grep 0xffffff > /dev/null 2>&1; then
4974 gcc_cv_as_ix86_got32x=no
4976 gcc_cv_as_ix86_got32x=yes
4980 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_GOT32X,
4981 [`if test x"$gcc_cv_as_ix86_got32x" = xyes; then echo 1; else echo 0; fi`],
4982 [Define 0/1 if your assembler and linker support @GOT.])
4984 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
4985 gcc_cv_as_ix86_gotoff_in_data,
4986 [$as_ix86_gas_32_opt],
4992 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
4993 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
4994 [Define true if the assembler supports '.long foo@GOTOFF'.])
4997 .section .text,"ax",@progbits
4999 .type _start, @function
5001 leal ld@tlsldm(%ecx), %eax
5002 call *___tls_get_addr@GOT(%ecx)
5003 leal gd@tlsgd(%ecx), %eax
5004 call *___tls_get_addr@GOT(%ecx)
5006 .section .tdata,"aw'$tls_section_flag'",@progbits
5014 gcc_GAS_CHECK_FEATURE([calling ___tls_get_addr via GOT],
5015 gcc_cv_as_ix86_tls_get_addr_via_got,
5016 [$as_ix86_gas_32_opt],
5018 [if test x$gcc_cv_ld != x \
5019 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
5020 gcc_cv_as_ix86_tls_get_addr_via_got=yes
5023 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLS_GET_ADDR_GOT,
5024 [`if test x"$gcc_cv_as_ix86_tls_get_addr_via_got" = xyes; then echo 1; else echo 0; fi`],
5025 [Define 0/1 if your assembler and linker support calling ___tls_get_addr via GOT.])
5029 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
5030 gcc_cv_as_ia64_ltoffx_ldxmov_relocs,,
5032 addl r15 = @ltoffx(x#), gp
5034 ld8.mov r16 = [[r15]], x#
5036 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
5037 [Define if your assembler supports ltoffx and ldxmov relocations.])])
5045 gcc_GAS_CHECK_FEATURE([.machine directive support],
5046 gcc_cv_as_machine_directive,,
5047 [ .machine ppc7400])
5048 if test x$gcc_cv_as_machine_directive != xyes; then
5049 echo "*** This target requires an assembler supporting \".machine\"" >&2
5050 echo you can get it from: https://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
5051 test x$build = x$target && exit 1
5057 *-*-aix*) conftest_s=' .machine "pwr5"
5060 *-*-darwin*) conftest_s=' .text
5062 *) conftest_s=' .machine power4
5067 gcc_GAS_CHECK_FEATURE([mfcr field support],
5068 gcc_cv_as_powerpc_mfcrf,,
5070 [AC_DEFINE(HAVE_AS_MFCRF, 1,
5071 [Define if your assembler supports mfcr field.])])
5074 *-*-aix*) conftest_s=' .csect .text[[PR]]
5076 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
5080 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
5081 *) conftest_s=' .text
5083 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
5086 gcc_GAS_CHECK_FEATURE([rel16 relocs],
5087 gcc_cv_as_powerpc_rel16, -a32,
5089 [AC_DEFINE(HAVE_AS_REL16, 1,
5090 [Define if your assembler supports R_PPC_REL16 relocs.])])
5093 *-*-aix*) conftest_s=' .machine "pwr7"
5096 *) conftest_s=' .machine power7
5101 gcc_GAS_CHECK_FEATURE([vector-scalar support],
5102 gcc_cv_as_powerpc_vsx, -a32,
5104 [AC_DEFINE(HAVE_AS_VSX, 1,
5105 [Define if your assembler supports VSX instructions.])])
5107 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5108 gcc_cv_as_powerpc_gnu_attribute,,
5109 [.gnu_attribute 4,1],,
5110 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5111 [Define if your assembler supports .gnu_attribute.])])
5113 gcc_GAS_CHECK_FEATURE([prologue entry point marker support],
5114 gcc_cv_as_powerpc_entry_markers,-a64 --fatal-warnings,
5115 [ .reloc .,R_PPC64_ENTRY; nop],,
5116 [AC_DEFINE(HAVE_AS_ENTRY_MARKERS, 1,
5117 [Define if your assembler supports the R_PPC64_ENTRY relocation.])])
5119 gcc_GAS_CHECK_FEATURE([plt sequence marker support],
5120 gcc_cv_as_powerpc_pltseq_markers,-a32 --fatal-warnings,
5121 [ .reloc .,R_PPC_PLTSEQ; nop],,
5122 [AC_DEFINE(HAVE_AS_PLTSEQ, 1,
5123 [Define if your assembler supports R_PPC*_PLTSEQ relocations.])])
5127 gcc_GAS_CHECK_FEATURE([AIX .ref support],
5129 [ .csect stuff[[rw]]
5135 [AC_DEFINE(HAVE_AS_REF, 1,
5136 [Define if your assembler supports .ref])])
5138 gcc_GAS_CHECK_FEATURE([AIX DWARF location lists section support],
5139 gcc_cv_as_aix_dwloc,,
5144 [AC_DEFINE(HAVE_XCOFF_DWARF_EXTRAS, 1,
5145 [Define if your assembler supports AIX debug frame section label reference.])])
5151 gcc_GAS_CHECK_FEATURE([explicit relocation support],
5152 gcc_cv_as_mips_explicit_relocs,,
5153 [ lw $4,%gp_rel(foo)($4)],,
5154 [if test x$target_cpu_default = x
5155 then target_cpu_default=MASK_EXPLICIT_RELOCS
5156 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
5159 gcc_GAS_CHECK_FEATURE([-mno-shared support],
5160 gcc_cv_as_mips_no_shared,[-mno-shared], [nop],,
5161 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
5162 [Define if the assembler understands -mno-shared.])])
5164 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5165 gcc_cv_as_mips_gnu_attribute,,
5166 [.gnu_attribute 4,1],,
5167 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5168 [Define if your assembler supports .gnu_attribute.])])
5170 gcc_GAS_CHECK_FEATURE([.module support],
5171 gcc_cv_as_mips_dot_module,[-32],
5174 [AC_DEFINE(HAVE_AS_DOT_MODULE, 1,
5175 [Define if your assembler supports .module.])])
5176 if test x$gcc_cv_as_mips_dot_module = xno \
5177 && test x$with_fp_32 != x; then
5179 [Requesting --with-fp-32= requires assembler support for .module.])
5182 gcc_GAS_CHECK_FEATURE([.micromips support],
5183 gcc_cv_as_micromips_support,[--fatal-warnings],
5185 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
5186 [Define if your assembler supports the .set micromips directive])])
5188 gcc_GAS_CHECK_FEATURE([.dtprelword support],
5189 gcc_cv_as_mips_dtprelword,,
5190 [.section .tdata,"awT",@progbits
5194 .dtprelword x+0x8000],,
5195 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
5196 [Define if your assembler supports .dtprelword.])])
5198 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
5199 gcc_cv_as_mips_dspr1_mult,,
5209 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
5210 [Define if your assembler supports DSPR1 mult.])])
5212 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
5213 gcc_cv_as_ld_jalr_reloc=no
5214 if test $gcc_cv_as_mips_explicit_relocs = yes; then
5215 if test $in_tree_ld = yes ; then
5216 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
5217 && test $in_tree_ld_is_elf = yes; then
5218 gcc_cv_as_ld_jalr_reloc=yes
5220 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
5221 echo ' .ent x' > conftest.s
5222 echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s
5223 echo ' lw $25,%call16(y)($28)' >> conftest.s
5224 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
5225 echo '1: jalr $25' >> conftest.s
5226 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
5227 echo '1: jalr $25' >> conftest.s
5228 echo ' .end x' >> conftest.s
5229 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
5230 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
5231 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
5232 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
5233 gcc_cv_as_ld_jalr_reloc=yes
5239 if test $gcc_cv_as_ld_jalr_reloc = yes; then
5240 if test x$target_cpu_default = x; then
5241 target_cpu_default=MASK_RELAX_PIC_CALLS
5243 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
5246 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
5248 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
5249 [gcc_cv_ld_mips_personality_relaxation],
5250 [gcc_cv_ld_mips_personality_relaxation=no
5251 if test $in_tree_ld = yes ; then
5252 if test "$gcc_cv_gld_major_version" -eq 2 \
5253 -a "$gcc_cv_gld_minor_version" -ge 21 \
5254 -o "$gcc_cv_gld_major_version" -gt 2; then
5255 gcc_cv_ld_mips_personality_relaxation=yes
5257 elif test x$gcc_cv_as != x \
5258 -a x$gcc_cv_ld != x \
5259 -a x$gcc_cv_readelf != x ; then
5260 cat > conftest.s <<EOF
5262 .cfi_personality 0x80,indirect_ptr
5269 .section .data,"aw",@progbits
5273 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
5274 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
5275 if $gcc_cv_readelf -d conftest 2>&1 \
5276 | grep TEXTREL > /dev/null 2>&1; then
5278 elif $gcc_cv_readelf --relocs conftest 2>&1 \
5279 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
5282 gcc_cv_ld_mips_personality_relaxation=yes
5286 rm -f conftest.s conftest.o conftest])
5287 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
5288 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
5289 [Define if your linker can relax absolute .eh_frame personality
5290 pointers into PC-relative form.])
5293 gcc_GAS_CHECK_FEATURE([-mnan= support],
5296 [AC_DEFINE(HAVE_AS_NAN, 1,
5297 [Define if the assembler understands -mnan=.])])
5298 if test x$gcc_cv_as_mips_nan = xno \
5299 && test x$with_nan != x; then
5301 [Requesting --with-nan= requires assembler support for -mnan=])
5305 # Earlier GAS versions generically support .gnu_attribute, but the
5306 # msp430 assembler will not do anything with it.
5307 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5308 gcc_cv_as_msp430_gnu_attribute,,
5309 [.gnu_attribute 4,1],,
5310 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5311 [Define if your assembler supports .gnu_attribute.])])
5312 gcc_GAS_CHECK_FEATURE([.mspabi_attribute support],
5313 gcc_cv_as_msp430_mspabi_attribute,,
5314 [.mspabi_attribute 4,2],,
5315 [AC_DEFINE(HAVE_AS_MSPABI_ATTRIBUTE, 1,
5316 [Define if your assembler supports .mspabi_attribute.])])
5317 if test x$enable_newlib_nano_formatted_io = xyes; then
5318 AC_DEFINE(HAVE_NEWLIB_NANO_FORMATTED_IO, 1, [Define if GCC has been
5319 configured with --enable-newlib-nano-formatted-io.])
5323 # Versions 2.33 and earlier lacked support for the %gotoff relocation
5324 # syntax that is documented in the ABI specification.
5325 gcc_GAS_CHECK_FEATURE([support for %gotoff relocations in constant data],
5326 gcc_cv_as_nios2_gotoff_relocation,,
5329 .long %gotoff(foo)],,
5330 [AC_DEFINE(HAVE_AS_NIOS2_GOTOFF_RELOCATION, 1,
5331 [Define if your assembler supports %gotoff relocation syntax.])])
5334 gcc_GAS_CHECK_FEATURE([.attribute support],
5335 gcc_cv_as_riscv_attribute,,
5336 [.attribute stack_align,4],,
5337 [AC_DEFINE(HAVE_AS_RISCV_ATTRIBUTE, 1,
5338 [Define if your assembler supports .attribute.])])
5339 gcc_GAS_CHECK_FEATURE([-misa-spec= support],
5340 gcc_cv_as_riscv_isa_spec,
5342 [AC_DEFINE(HAVE_AS_MISA_SPEC, 1,
5343 [Define if the assembler understands -misa-spec=.])])
5344 gcc_GAS_CHECK_FEATURE([-march=rv32i_zifencei support],
5345 gcc_cv_as_riscv_march_zifencei,
5346 [-march=rv32i_zifencei2p0],,,
5347 [AC_DEFINE(HAVE_AS_MARCH_ZIFENCEI, 1,
5348 [Define if the assembler understands -march=rv*_zifencei.])])
5351 gcc_GAS_CHECK_FEATURE([.dtprelword support],
5352 gcc_cv_as_loongarch_dtprelword, [2,18,0],,
5353 [.section .tdata,"awT",@progbits
5357 .dtprelword x+0x8000],,
5358 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
5359 [Define if your assembler supports .dtprelword.])])
5360 gcc_GAS_CHECK_FEATURE([explicit relocation support],
5361 gcc_cv_as_loongarch_explicit_relocs,,
5362 [a:pcalau12i $t0,%pc_hi20(a)],,
5363 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
5364 [Define if your assembler supports explicit relocation.])])
5365 gcc_GAS_CHECK_FEATURE([eh_frame pcrel encoding support],
5366 gcc_cv_as_loongarch_eh_frame_pcrel_encoding_support,,
5368 .cfi_personality 0x9b,a
5371 [AC_DEFINE(HAVE_AS_EH_FRAME_PCREL_ENCODING_SUPPORT, 1,
5372 [Define if your assembler supports eh_frame pcrel encoding.])])
5375 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5376 gcc_cv_as_s390_gnu_attribute,,
5377 [.gnu_attribute 8,1],,
5378 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5379 [Define if your assembler supports .gnu_attribute.])])
5380 gcc_GAS_CHECK_FEATURE([.machine and .machinemode support],
5381 gcc_cv_as_s390_machine_machinemode,,
5386 [AC_DEFINE(HAVE_AS_MACHINE_MACHINEMODE, 1,
5387 [Define if your assembler supports .machine and .machinemode.])])
5388 gcc_GAS_CHECK_FEATURE([architecture modifiers support],
5389 gcc_cv_as_s390_architecture_modifiers,,
5390 [ .machine z13+vx ],,
5391 [AC_DEFINE(HAVE_AS_ARCHITECTURE_MODIFIERS, 1,
5392 [Define if your assembler supports architecture modifiers.])])
5393 gcc_GAS_CHECK_FEATURE([vector load/store alignment hints],
5394 gcc_cv_as_s390_vector_loadstore_alignment_hints,,
5395 [ vl %v24,0(%r15),3 ],,
5396 [AC_DEFINE(HAVE_AS_VECTOR_LOADSTORE_ALIGNMENT_HINTS, 1,
5397 [Define if your assembler supports vl/vst/vlm/vstm with an optional alignment hint argument.])])
5398 gcc_GAS_CHECK_FEATURE([vector load/store alignment hints on z13],
5399 gcc_cv_as_s390_vector_loadstore_alignment_hints_on_z13, [-mzarch -march=z13],
5400 [ vl %v24,0(%r15),3 ],,
5401 [AC_DEFINE(HAVE_AS_VECTOR_LOADSTORE_ALIGNMENT_HINTS_ON_Z13, 1,
5402 [Define if your assembler supports vl/vst/vlm/vstm with an optional alignment hint argument on z13.])])
5407 # Mips, LoongArch and HP-UX need the GNU assembler.
5408 # Linux on IA64 might be able to use the Intel assembler.
5411 mips*-*-* | loongarch*-*-* | *-*-hpux* )
5412 if test x$gas_flag = xyes \
5413 || test x"$host" != x"$build" \
5414 || test ! -x "$gcc_cv_as" \
5415 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
5418 echo "*** This configuration requires the GNU assembler" >&2
5424 # AMD GCN needs the LLVM assembler and linker.
5425 # Test that LLVM is at least 13.0.1.
5428 AC_MSG_CHECKING(llvm assembler version)
5429 gcc_cv_as_version="unknown"
5430 if test x$gcc_cv_as != x; then
5431 gcc_cv_as_version=`$gcc_cv_as --version 2>&1 | sed -ne '/version/s/.* \([[0-9]]\)/\1/p' || echo error`
5432 case "$gcc_cv_as_version" in
5433 13.0.[[1-9]]*) ;; # 13.0.1+
5434 13.[[1-9]]*) ;; # 13.1+
5435 1[[4-9]]*) ;; # 14..19
5436 [[2-9]][[0-9]]*) ;; # 20..99
5437 [[1-9]][[0-9]][[0-9]]*) ;; # 100+
5438 error) AC_MSG_ERROR([cannot determine LLVM version]) ;;
5439 *) AC_MSG_ERROR([LLVM 13.0.1 or later is required (found LLVM $gcc_cv_as_version)]) ;;
5442 AC_MSG_RESULT([$gcc_cv_as_version, ok])
5448 gcc_GAS_CHECK_FEATURE([assembler for arm accepts context-specific architecture extensions],
5449 gcc_cv_as_arm_option_extensions,
5450 [-march=armv8.1-m.main+mve],
5455 [AC_DEFINE(HAVE_GAS_ARM_EXTENDED_ARCH, 1,
5456 [Define if your Arm assembler permits context-specific feature extensions.])])
5459 # ??? Not all targets support dwarf2 debug_line, even within a version
5460 # of gas. Moreover, we need to emit a valid instruction to trigger any
5461 # info to the output file. So, as supported targets are added to gas 2.11,
5462 # add some instruction here to (also) show we expect this might work.
5463 # ??? Once 2.11 is released, probably need to add first known working
5464 # version to the per-target configury.
5466 aarch64 | alpha | arc | arm | avr | bfin | cris | csky | i386 | loongarch | m32c \
5467 | m68k | microblaze | mips | nds32 | nios2 | pa | riscv | rs6000 | score | sparc \
5468 | visium | xstormy16 | xtensa)
5478 if test x"$insn" != x; then
5480 .file 1 \"conftest.s\"
5483 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
5484 gcc_cv_as_dwarf2_debug_line,,
5486 [if test x$gcc_cv_objdump != x \
5487 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
5488 | grep debug_line > /dev/null 2>&1; then
5489 gcc_cv_as_dwarf2_debug_line=yes
5490 elif test x$gcc_cv_otool != x \
5491 && $gcc_cv_otool -l conftest.o 2> /dev/null \
5492 | grep debug_line > /dev/null 2>&1; then
5493 gcc_cv_as_dwarf2_debug_line=yes
5496 # The .debug_line file table must be in the exact order that
5497 # we specified the files, since these indices are also used
5498 # by DW_AT_decl_file. Approximate this test by testing if
5499 # the assembler bitches if the same index is assigned twice.
5500 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
5501 gcc_cv_as_dwarf2_file_buggy,,
5505 if test $gcc_cv_as_dwarf2_debug_line = yes \
5506 && test $gcc_cv_as_dwarf2_file_buggy = no; then
5507 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
5508 [Define if your assembler supports dwarf2 .file/.loc directives,
5509 and preserves file table indices exactly as given.])
5511 if test $gcc_cv_as_leb128 = yes; then
5513 .file 1 \"conftest.s\"
5514 .loc 1 3 0 view .LVU1
5520 gcc_GAS_CHECK_FEATURE([dwarf2 debug_view support],
5521 gcc_cv_as_dwarf2_debug_view,,
5523 [AC_DEFINE(HAVE_AS_DWARF2_DEBUG_VIEW, 1,
5524 [Define if your assembler supports views in dwarf2 .loc directives.])])
5528 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
5529 gcc_cv_as_gdwarf2_flag,
5530 [--gdwarf2], [$insn],,
5531 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
5532 [Define if your assembler supports the --gdwarf2 option.])])
5534 gcc_GAS_CHECK_FEATURE([--gdwarf-5 option],
5535 gcc_cv_as_gdwarf_5_flag,
5536 [--gdwarf-5], [$insn],
5537 [if test x$gcc_cv_objdump != x \
5538 && $gcc_cv_objdump -Wi conftest.o 2>&1 \
5539 | grep DW_TAG_compile_unit > /dev/null 2>&1; then
5540 gcc_cv_as_gdwarf_5_flag=yes;
5541 fi],[AC_DEFINE(HAVE_AS_GDWARF_5_DEBUG_FLAG, 1,
5542 [Define if your assembler supports the --gdwarf-5 option.])])
5545 win32 | pe | cygwin* | mingw32*)
5546 section_flags=\"dr\"
5547 function_type=".def foo; .scl 2; .type 32; .endef"
5550 section_flags=\"\",%progbits
5551 function_type=".type foo, %function"
5552 function_size=".size foo, .-foo";;
5554 dwarf4_debug_info_size=0x46
5555 dwarf4_high_pc_form=7
5556 dwarf4_debug_aranges_size=0x2c
5558 for dwarf4_addr_size in 8 4; do
5574 .section .debug_info,$section_flags
5576 .4byte $dwarf4_debug_info_size
5578 .4byte .Ldebug_abbrev0
5579 .byte 0x$dwarf4_addr_size
5581 .ascii \"GNU C17\\0\"
5585 .${dwarf4_addr_size}byte .Ltext0
5586 .${dwarf4_addr_size}byte .Letext0-.Ltext0
5587 .4byte .Ldebug_line0
5593 .${dwarf4_addr_size}byte .LFB0
5594 .${dwarf4_addr_size}byte .LFE0-.LFB0
5598 .section .debug_abbrev,$section_flags
5614 .byte 0x$dwarf4_high_pc_form
5635 .byte 0x$dwarf4_high_pc_form
5641 .section .debug_aranges,$section_flags
5642 .4byte $dwarf4_debug_aranges_size
5644 .4byte .Ldebug_info0
5649 .${dwarf4_addr_size}byte .Ltext0
5650 .${dwarf4_addr_size}byte .Letext0-.Ltext0
5651 .${dwarf4_addr_size}byte 0
5652 .${dwarf4_addr_size}byte 0
5653 .section .debug_line,$section_flags
5655 .4byte .LELT0-.LSLT0
5658 .4byte .LELTP0-.LASLTP0
5686 .byte 0x$dwarf4_line_sz
5688 .${dwarf4_addr_size}byte .LM1
5693 .byte 0x$dwarf4_line_sz
5695 .${dwarf4_addr_size}byte .LM2
5700 .byte 0x$dwarf4_line_sz
5702 .${dwarf4_addr_size}byte .Letext0
5707 .section .debug_str,$section_flags
5711 if test $dwarf4_addr_size = 4; then
5712 gcc_GAS_CHECK_FEATURE([assembly of compiler generated 32-bit .debug_line],
5713 gcc_cv_as_debug_line_32_flag,,
5715 [dwarf4_success=yes])
5717 gcc_GAS_CHECK_FEATURE([assembly of compiler generated 64-bit .debug_line],
5718 gcc_cv_as_debug_line_64_flag,,
5720 [dwarf4_success=yes])
5722 if test $dwarf4_success = yes; then
5724 gcc_GAS_CHECK_FEATURE([--gdwarf-4 not refusing compiler generated .debug_line],
5725 gcc_cv_as_dwarf_4_debug_line_flag,
5726 [--gdwarf-4], [$conftest_s],,
5727 [dwarf4_success=yes])
5730 dwarf4_debug_info_size=0x36
5731 dwarf4_high_pc_form=6
5732 dwarf4_debug_aranges_size=0x1c
5736 if test $dwarf4_success = yes; then
5754 gcc_GAS_CHECK_FEATURE([--gdwarf-4 with the APP marker],
5755 gcc_cv_as_dwarf_4_app_flag,
5756 [--gdwarf-4], [$conftest_s],, [dwarf4_success=yes])
5759 if test $dwarf4_success = yes; then
5769 gcc_GAS_CHECK_FEATURE([working --gdwarf-4/--gdwarf-5 for all sources],
5770 gcc_cv_as_working_gdwarf_n_flag,
5774 if test x$gcc_cv_objdump != x \
5775 && $gcc_cv_objdump -W conftest.o 2>&1 \
5776 | grep conftest.s > /dev/null 2>&1; then
5777 gcc_cv_as_working_gdwarf_n_flag=no
5779 gcc_cv_as_working_gdwarf_n_flag=yes
5781 changequote([,])dnl])
5782 if test $gcc_cv_as_working_gdwarf_n_flag = yes; then
5783 AC_DEFINE(HAVE_AS_WORKING_DWARF_N_FLAG, 1,
5784 [Define if your assembler supports --gdwarf-4/--gdwarf-5 even with
5785 compiler generated .debug_line.])
5789 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
5790 gcc_cv_as_debug_prefix_map_flag,
5791 [--debug-prefix-map /a=/b], [$insn],,
5792 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
5793 [Define if your assembler supports the --debug-prefix-map option.])])
5796 gcc_GAS_CHECK_FEATURE([compressed debug sections],
5797 gcc_cv_as_compress_debug,,,
5798 [# gas compiled without zlib cannot compress debug sections and warns
5799 # about it, but still exits successfully. So check for this, too.
5800 if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null
5802 gcc_cv_as_compress_debug=0
5803 elif $gcc_cv_as --compress-debug-sections=zlib -o conftest.o conftest.s > /dev/null 2>&1
5805 gcc_cv_as_compress_debug=1
5806 gcc_cv_as_compress_debug_option="--compress-debug-sections"
5807 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
5808 # Since binutils 2.40, gas supports --compress-debug-sections=zstd.
5809 if $gcc_cv_as --compress-debug-sections=zstd -o conftest.o conftest.s > /dev/null 2>&1
5811 gcc_cv_as_compress_debug=2
5814 gcc_cv_as_compress_debug=0
5816 AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug,
5817 [Define to the level of your assembler's compressed debug section support.])
5818 AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option",
5819 [Define to the assembler option to enable compressed debug sections.])
5820 AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option",
5821 [Define to the assembler option to disable compressed debug sections.])
5823 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,,
5825 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
5826 [Define if your assembler supports .lcomm with an alignment field.])])
5828 if test x$with_sysroot = x && test x$host = x$target \
5829 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
5830 && test "$prefix" != "NONE"; then
5831 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
5832 [Define to PREFIX/include if cpp should also search that directory.])
5835 # Determine the version of glibc, if any, used on the target.
5836 AC_MSG_CHECKING([for target glibc version])
5837 AC_ARG_WITH([glibc-version],
5838 [AS_HELP_STRING([--with-glibc-version=M.N],
5839 [assume GCC used with glibc version M.N or later])], [
5840 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
5841 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
5842 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
5844 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
5846 glibc_version_major=0
5847 glibc_version_minor=0
5848 [if test -f $target_header_dir/features.h \
5849 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
5850 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
5851 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
5852 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
5854 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
5855 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MAJOR], [$glibc_version_major],
5856 [GNU C Library major version number used on the target, or 0.])
5857 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MINOR], [$glibc_version_minor],
5858 [GNU C Library minor version number used on the target, or 0.])
5860 AC_ARG_ENABLE(gnu-unique-object,
5861 [AS_HELP_STRING([--enable-gnu-unique-object],
5862 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
5863 [case $enable_gnu_unique_object in
5865 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
5866 Valid choices are 'yes' and 'no'.]) ;;
5868 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,,
5869 [.type foo, '$target_type_format_char'gnu_unique_object],,
5870 # We need to unquote above to to use the definition from config.gcc.
5871 # Also check for ld.so support, i.e. glibc 2.11 or higher.
5872 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
5874 if test x$enable_gnu_unique_object = xyes; then
5875 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
5876 [Define if your assembler supports @gnu_unique_object.])
5879 AC_CACHE_CHECK([assembler for tolerance to line number 0],
5880 [gcc_cv_as_line_zero],
5881 [gcc_cv_as_line_zero=no
5882 if test "x$gcc_cv_as" != x; then
5883 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
5884 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
5885 test "x`cat conftest.out`" = x
5887 gcc_cv_as_line_zero=yes
5889 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
5890 cat conftest.s >&AS_MESSAGE_LOG_FD
5891 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
5892 cat conftest.out >&AS_MESSAGE_LOG_FD
5894 rm -f conftest.o conftest.s conftest.out
5896 if test "x$gcc_cv_as_line_zero" = xyes; then
5897 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
5898 [Define if the assembler won't complain about a line such as # 0 "" 2.])
5901 AC_MSG_CHECKING(support for thin archives)
5902 thin_archive_support=no
5903 echo 'int main (void) { return 0; }' > conftest.c
5904 if ($AR --version | sed 1q | grep "GNU ar" \
5905 && $CC $CFLAGS -c conftest.c \
5906 && $AR rcT conftest.a conftest.o \
5907 && $CC $CFLAGS $LDFLAGS -o conftest conftest.a) >/dev/null 2>&1; then
5908 thin_archive_support=yes
5910 rm -f conftest.c conftest.o conftest.a conftest
5911 AC_MSG_RESULT($thin_archive_support)
5912 AC_SUBST(thin_archive_support)
5914 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
5915 gcc_cv_ld_eh_frame_hdr=no
5916 if test $in_tree_ld = yes ; then
5917 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
5918 && test $in_tree_ld_is_elf = yes; then
5919 gcc_cv_ld_eh_frame_hdr=yes
5921 elif test x$gcc_cv_ld != x; then
5922 if echo "$ld_ver" | grep GNU > /dev/null; then
5923 # Check if linker supports --eh-frame-hdr option
5924 if $gcc_cv_ld --help 2>&1 | grep eh-frame-hdr > /dev/null; then
5925 gcc_cv_ld_eh_frame_hdr=yes
5930 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
5931 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
5932 gcc_cv_ld_eh_frame_hdr=yes
5938 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
5939 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
5940 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
5941 [Define if your linker supports .eh_frame_hdr.])
5943 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
5945 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
5946 gcc_cv_ld_eh_frame_ciev3=no
5947 if test $in_tree_ld = yes ; then
5948 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5949 && test $in_tree_ld_is_elf = yes; then
5950 gcc_cv_ld_eh_frame_ciev3=yes
5952 elif test x$gcc_cv_ld != x; then
5953 if echo "$ld_ver" | grep GNU > /dev/null; then
5954 gcc_cv_ld_eh_frame_ciev3=yes
5955 if test 0"$ld_date" -lt 20040513; then
5956 if test -n "$ld_date"; then
5957 # If there was date string, but was earlier than 2004-05-13, fail
5958 gcc_cv_ld_eh_frame_ciev3=no
5959 elif test "$ld_vers_major" -lt 2; then
5960 gcc_cv_ld_eh_frame_ciev3=no
5961 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
5962 gcc_cv_ld_eh_frame_ciev3=no
5968 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
5969 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
5970 gcc_cv_ld_eh_frame_ciev3=yes
5976 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
5977 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
5978 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
5979 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
5981 AC_MSG_CHECKING(linker position independent executable support)
5983 if test $in_tree_ld = yes ; then
5985 # Full PIE support on Solaris was only introduced in gld 2.26.
5986 *-*-solaris2*) gcc_gld_pie_min_version=26 ;;
5987 *) gcc_gld_pie_min_version=15 ;;
5989 if test "$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 \
5990 && test $in_tree_ld_is_elf = yes; then
5993 elif test x$gcc_cv_ld != x; then
5994 # Check if linker supports -pie option
5995 if $gcc_cv_ld --help 2>&1 | grep -- -pie > /dev/null; then
5999 if echo "$ld_ver" | grep GNU > /dev/null \
6000 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
6007 *-*-solaris2.1[[1-9]]*)
6008 # Solaris 11.3 added PIE support.
6009 if $gcc_cv_ld -z help 2>&1 | grep -- type.*pie > /dev/null; then
6016 if test x"$gcc_cv_ld_pie" = xyes; then
6017 AC_DEFINE(HAVE_LD_PIE, 1,
6018 [Define if your linker supports PIE option.])
6020 AC_MSG_RESULT($gcc_cv_ld_pie)
6022 AC_MSG_CHECKING(linker PIE support with copy reloc)
6023 gcc_cv_ld_pie_copyreloc=no
6024 if test $gcc_cv_ld_pie = yes ; then
6025 if test $in_tree_ld = yes ; then
6026 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6027 gcc_cv_ld_pie_copyreloc=yes
6029 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6030 # Check if linker supports -pie option with copy reloc
6032 i?86-*-linux* | x86_64-*-linux*)
6033 cat > conftest1.s <<EOF
6036 .type a_glob, @object
6041 cat > conftest2.s <<EOF
6044 .type main, @function
6046 movl %eax, a_glob(%rip)
6049 .section .data.rel,"aw",@progbits
6054 if $gcc_cv_as --64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
6055 && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \
6056 && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
6057 && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then
6058 gcc_cv_ld_pie_copyreloc=yes
6060 rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s
6065 AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC,
6066 [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`],
6067 [Define 0/1 if your linker supports -pie option with copy reloc.])
6068 AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc)
6070 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
6071 gcc_cv_ld_eh_gc_sections=no
6072 if test $in_tree_ld = yes ; then
6073 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
6074 && test $in_tree_ld_is_elf = yes; then
6075 gcc_cv_ld_eh_gc_sections=yes
6077 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
6078 cat > conftest.s <<EOF
6081 .type _start, @function
6084 .size _start, .-_start
6085 .section .text.foo,"ax",@progbits
6086 .type foo, @function
6090 .section .gcc_except_table.foo,"a",@progbits
6093 .section .eh_frame,"a",@progbits
6096 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
6097 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
6098 | grep "gc-sections option ignored" > /dev/null; then
6099 gcc_cv_ld_eh_gc_sections=no
6100 elif $gcc_cv_objdump -h conftest 2> /dev/null \
6101 | grep gcc_except_table > /dev/null; then
6102 gcc_cv_ld_eh_gc_sections=yes
6103 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
6104 if test x$gcc_cv_as_comdat_group != xyes; then
6105 gcc_cv_ld_eh_gc_sections=no
6106 cat > conftest.s <<EOF
6109 .type _start, @function
6112 .size _start, .-_start
6113 .section .gnu.linkonce.t.foo,"ax",@progbits
6114 .type foo, @function
6118 .section .gcc_except_table.foo,"a",@progbits
6121 .section .eh_frame,"a",@progbits
6124 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
6125 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
6126 | grep "gc-sections option ignored" > /dev/null; then
6127 gcc_cv_ld_eh_gc_sections=no
6128 elif $gcc_cv_objdump -h conftest 2> /dev/null \
6129 | grep gcc_except_table > /dev/null; then
6130 gcc_cv_ld_eh_gc_sections=yes
6136 rm -f conftest.s conftest.o conftest
6140 # ??? This apparently exposes a binutils bug with PC-relative relocations.
6141 gcc_cv_ld_eh_gc_sections=no
6144 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
6145 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
6146 [Define if your linker supports garbage collection of
6147 sections in presence of EH frames.])
6149 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
6151 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
6152 gcc_cv_ld_eh_gc_sections_bug=no
6153 if test $in_tree_ld = yes ; then
6154 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
6155 && test $in_tree_ld_is_elf = yes; then
6156 gcc_cv_ld_eh_gc_sections_bug=yes
6158 elif test x$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
6159 gcc_cv_ld_eh_gc_sections_bug=yes
6160 cat > conftest.s <<EOF
6163 .type _start, @function
6166 .size _start, .-_start
6167 .section .text.startup.foo,"ax",@progbits
6168 .type foo, @function
6172 .section .gcc_except_table.foo,"a",@progbits
6175 .section .eh_frame,"a",@progbits
6178 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
6179 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
6180 | grep "gc-sections option ignored" > /dev/null; then
6182 elif $gcc_cv_objdump -h conftest 2> /dev/null \
6183 | grep gcc_except_table > /dev/null; then
6184 gcc_cv_ld_eh_gc_sections_bug=no
6187 rm -f conftest.s conftest.o conftest
6189 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
6190 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
6191 [Define if your linker has buggy garbage collection of
6192 sections support when .text.startup.foo like sections are used.])
6194 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
6196 AC_MSG_CHECKING(linker for compressed debug sections)
6197 # GNU ld/gold support --compressed-debug-sections=zlib since binutils 2.26.
6198 if $gcc_cv_ld --help 2>&1 | grep -- '--compress-debug-sections.*\<zlib-gabi\>' > /dev/null; then
6199 gcc_cv_ld_compress_debug=1
6200 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
6201 # Detect zstd debug section compression support
6202 if $gcc_cv_ld --help 2>&1 | grep -- '--compress-debug-sections.*\<zstd\>' > /dev/null; then
6203 gcc_cv_ld_compress_debug=2
6209 # Introduced in Solaris 11.2.
6210 if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then
6211 gcc_cv_ld_compress_debug=1
6212 gcc_cv_ld_compress_debug_option="-z compress-sections"
6214 gcc_cv_ld_compress_debug=0
6218 # Assume linkers other than GNU ld don't support compessed debug
6220 gcc_cv_ld_compress_debug=0
6225 AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug,
6226 [Define to the level of your linker's compressed debug section support.])
6227 AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option",
6228 [Define to the linker option to enable compressed debug sections.])
6229 AC_MSG_RESULT($gcc_cv_ld_compress_debug)
6231 if test x"$ld64_flag" = x"yes"; then
6233 # Set defaults for possibly untestable items.
6234 gcc_cv_ld64_export_dynamic=0
6235 gcc_cv_ld64_platform_version=0
6236 gcc_cv_ld64_demangle=0
6238 if test "$build" = "$host"; then
6244 # On Darwin, because of FAT library support, it is often possible to execute
6245 # exes from compatible archs even when the host differs from the build system.
6246 case "$build","$host" in
6247 x86_64-*-darwin*,i?86-*-darwin* | powerpc64*-*-darwin*,powerpc*-*-darwin*)
6252 # If the configurer specified a minimum ld64 version to be supported, then use
6253 # that to determine feature support.
6254 if test x"${gcc_cv_ld64_version}" != x; then
6255 AC_MSG_CHECKING(ld64 specified version)
6256 gcc_cv_ld64_major=`echo "$gcc_cv_ld64_version" | sed -e 's/\..*//'`
6257 AC_MSG_RESULT($gcc_cv_ld64_major)
6258 if test "$gcc_cv_ld64_major" -ge 97; then
6259 gcc_cv_ld64_demangle=1
6261 if test "$gcc_cv_ld64_major" -ge 236; then
6262 gcc_cv_ld64_export_dynamic=1
6264 if test "$gcc_cv_ld64_major" -ge 512; then
6265 gcc_cv_ld64_platform_version=1
6267 elif test -x "$gcc_cv_ld" -a "$darwin_try_test" -eq 1; then
6268 # If the version was not specified, try to find it.
6269 AC_MSG_CHECKING(linker version)
6270 if test x"${gcc_cv_ld64_version}" = x; then
6271 gcc_cv_ld64_version=`$gcc_cv_ld -v 2>&1 | $EGREP 'ld64|dyld' \
6272 | sed -e 's/.*ld64-//' -e 's/.*dyld-//'| awk '{print $1}'`
6274 AC_MSG_RESULT($gcc_cv_ld64_version)
6276 AC_MSG_CHECKING(linker for -demangle support)
6277 gcc_cv_ld64_demangle=1
6278 if $gcc_cv_ld -demangle < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then
6279 gcc_cv_ld64_demangle=0
6281 AC_MSG_RESULT($gcc_cv_ld64_demangle)
6283 AC_MSG_CHECKING(linker for -export_dynamic support)
6284 gcc_cv_ld64_export_dynamic=1
6285 if $gcc_cv_ld -export_dynamic < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then
6286 gcc_cv_ld64_export_dynamic=0
6288 AC_MSG_RESULT($gcc_cv_ld64_export_dynamic)
6290 AC_MSG_CHECKING(linker for -platform_version support)
6291 gcc_cv_ld64_platform_version=1
6292 if $gcc_cv_ld -platform_version macos 10.5 0.0 < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then
6293 gcc_cv_ld64_platform_version=0
6295 AC_MSG_RESULT($gcc_cv_ld64_platform_version)
6298 if test x"${gcc_cv_ld64_version}" != x; then
6299 AC_DEFINE_UNQUOTED(LD64_VERSION, "${gcc_cv_ld64_version}",
6300 [Define to ld64 version.])
6303 AC_DEFINE_UNQUOTED(LD64_HAS_DEMANGLE, $gcc_cv_ld64_demangle,
6304 [Define to 1 if ld64 supports '-demangle'.])
6306 AC_DEFINE_UNQUOTED(LD64_HAS_EXPORT_DYNAMIC, $gcc_cv_ld64_export_dynamic,
6307 [Define to 1 if ld64 supports '-export_dynamic'.])
6309 AC_DEFINE_UNQUOTED(LD64_HAS_PLATFORM_VERSION, $gcc_cv_ld64_platform_version,
6310 [Define to 1 if ld64 supports '-platform_version'.])
6313 if test x"$dsymutil_flag" = x"yes"; then
6315 # If the user specified a dsymutil path, then we will already have the
6316 # version string, otherwise, pick it up.
6317 if test x"$gcc_cv_dsymutil" = x; then
6318 AC_MSG_WARN([dsymutil is a required tool for this system, but not found])
6319 dsymutil_vers="tool unspecified"
6320 elif test x"$dsymutil_vers" = x; then
6321 dsymutil_vers=`$gcc_cv_dsymutil -v /dev/null 2>&1`
6324 dsymutil_temp=`echo $dsymutil_vers | sed 1q`
6325 AC_MSG_CHECKING(dsymutil version "$dsymutil_temp")
6326 if echo $dsymutil_temp | grep dwarfutils- > /dev/null; then
6327 dsymutil_kind=DWARFUTILS
6328 dsymutil_vers=`echo $dsymutil_temp | sed 's/.*dwarfutils-\([[0-9\.]]*\).*/\1/'`
6329 elif echo $dsymutil_temp | grep clang- > /dev/null; then
6331 dsymutil_vers=`echo $dsymutil_temp | sed 's/.*clang-\([[0-9\.]]*\).*/\1/'`
6332 elif echo $dsymutil_temp | grep 'LLVM version ' > /dev/null; then
6334 dsymutil_vers=`echo $dsymutil_temp | sed 's/.*LLVM\ version\ \([[0-9\.]]*\).*/\1/'`
6336 dsymutil_kind=UNKNOWN
6339 dsymutil_major=`expr "$dsymutil_vers" : '\([[0-9]]*\)'`
6340 dsymutil_minor=`expr "$dsymutil_vers" : '[[0-9]]*\.\([[0-9]]*\)'`
6341 dsymutil_tiny=`expr "$dsymutil_vers" : '[[0-9]]*\.[[0-9]]*\.\([[0-9]]*\)'`
6342 if test x"${dsymutil_minor}" = x; then
6345 if test x"${dsymutil_tiny}" = x; then
6348 AC_DEFINE_UNQUOTED(DSYMUTIL_VERSION, [$dsymutil_kind,${dsymutil_major},${dsymutil_minor},${dsymutil_tiny}],
6349 [Define to the dsymutil version.])
6350 AC_MSG_RESULT($dsymutil_vers : $dsymutil_kind ${dsymutil_major} ${dsymutil_minor} ${dsymutil_tiny} )
6354 win32 | pe | cygwin* | mingw32*)
6355 AC_MSG_CHECKING(broken PE linker dwarf5 support)
6356 gcc_cv_ld_broken_pe_dwarf5=yes
6357 if test $in_tree_ld = yes ; then
6358 if grep -q '\.debug_loclists.*BLOCK.*__section_alignment__.*NOLOAD.*:' \
6359 $gcc_cv_ld_gld_srcdir/scripttempl/pe*.sc \
6360 && grep -q '\.debug_rnglists.*BLOCK.*__section_alignment__.*NOLOAD.*:' \
6361 $gcc_cv_ld_gld_srcdir/scripttempl/pe*.sc; then
6362 gcc_cv_ld_broken_pe_dwarf5=no
6365 if $gcc_cv_ld --verbose 2>&1 | grep -q '\.debug_loclists.*BLOCK.*__section_alignment__.*NOLOAD.*:' \
6366 && $gcc_cv_ld --verbose 2>&1 | grep -q '\.debug_rnglists.*BLOCK.*__section_alignment__.*NOLOAD.*:'; then
6367 gcc_cv_ld_broken_pe_dwarf5=no
6370 if test x$gcc_cv_ld_broken_pe_dwarf5 = xyes; then
6371 AC_DEFINE(HAVE_LD_BROKEN_PE_DWARF5, 1,
6372 [Define if the PE linker has broken DWARF 5 support.])
6374 AC_MSG_RESULT($gcc_cv_ld_broken_pe_dwarf5)
6376 AC_MSG_CHECKING(PE linker --disable-dynamicbase support)
6377 gcc_cv_ld_disable_dynamicbase=no
6378 if test $in_tree_ld = yes; then
6379 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 36 -o "$gcc_cv_gld_major_version" -gt 2; then \
6380 gcc_cv_ld_disable_dynamicbase=yes
6383 if $gcc_cv_ld --help 2>&1 | grep -q 'disable\-]dynamicbase' > /dev/null; then
6384 gcc_cv_ld_disable_dynamicbase=yes
6387 if test x"$gcc_cv_ld_disable_dynamicbase" = xyes; then
6388 AC_DEFINE(HAVE_LD_PE_DISABLE_DYNAMICBASE, 1,
6389 [Define if the PE linker supports --disable-dynamicbase option.])
6391 AC_MSG_RESULT($gcc_cv_ld_disable_dynamicbase)
6399 AC_CACHE_CHECK(linker --as-needed support,
6400 gcc_cv_ld_as_needed,
6401 [gcc_cv_ld_as_needed=no
6402 gcc_cv_ld_as_needed_option='--as-needed'
6403 gcc_cv_ld_no_as_needed_option='--no-as-needed'
6404 if test $in_tree_ld = yes ; then
6405 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
6406 && test $in_tree_ld_is_elf = yes; then
6407 gcc_cv_ld_as_needed=yes
6408 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 28; then
6409 gcc_cv_ld_as_needed_option='--push-state --as-needed'
6410 gcc_cv_ld_no_as_needed_option='--pop-state'
6413 elif test x$gcc_cv_ld != x; then
6414 # Check if linker supports --as-needed and --no-as-needed options
6415 if $gcc_cv_ld --help 2>&1 | grep as-needed > /dev/null; then
6416 gcc_cv_ld_as_needed=yes
6417 if $gcc_cv_ld --help 2>&1 | grep push-state > /dev/null \
6418 && $gcc_cv_ld --help 2>&1 | grep pop-state > /dev/null \
6419 && echo "$ld_ver" | grep GNU > /dev/null \
6420 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 28; then
6421 # Use these options only when both ld.bfd and ld.gold support
6422 # --push-state/--pop-state, which unfortunately wasn't added
6424 gcc_cv_ld_as_needed_option='--push-state --as-needed'
6425 gcc_cv_ld_no_as_needed_option='--pop-state'
6428 case "$target:$gnu_ld" in
6430 # Solaris 2 ld always supports -z ignore/-z record. Prefer the native
6432 gcc_cv_ld_as_needed=yes
6433 gcc_cv_ld_as_needed_option="-z ignore"
6434 gcc_cv_ld_no_as_needed_option="-z record"
6438 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
6439 # dl_iterate_phdr, i.e. since Solaris 11.
6441 *-*-solaris2.1[[1-9]]*)
6443 i?86-*-* | x86_64-*-*)
6444 if echo "$ld_ver" | grep GNU > /dev/null; then
6445 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
6446 gcc_cv_ld_as_needed=no
6452 gcc_cv_ld_as_needed=no
6456 if test x"$gcc_cv_ld_as_needed" = xyes; then
6457 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
6458 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
6459 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
6460 [Define to the linker option to ignore unused dependencies.])
6461 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
6462 [Define to the linker option to keep unused dependencies.])
6465 AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities)
6466 saved_LDFLAGS="$LDFLAGS"
6467 for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do
6468 LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map"
6469 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
6470 [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no])
6472 LDFLAGS="$saved_LDFLAGS"
6473 if test "x$gcc_cv_ld_clearcap" = xyes; then
6474 AC_DEFINE([HAVE_LD_CLEARCAP], 1,
6475 [Define if the linker supports clearing hardware capabilities via mapfile.])
6476 AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map])
6478 AC_MSG_RESULT($gcc_cv_ld_clearcap)
6484 emul_name="-melf32lppc"
6487 emul_name="-melf32ppc"
6490 AC_CACHE_CHECK(linker .gnu.attributes long double support,
6492 [gcc_cv_ld_ppc_attr=no
6493 if test x"$ld_is_gold" = xyes; then
6494 gcc_cv_ld_ppc_attr=yes
6495 elif test $in_tree_ld = yes ; then
6496 if test "$gcc_cv_gld_major_version" -eq 2 \
6497 -a "$gcc_cv_gld_minor_version" -ge 28 \
6498 -o "$gcc_cv_gld_major_version" -gt 2; then
6499 gcc_cv_ld_ppc_attr=yes
6501 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6502 # check that merging the long double .gnu_attribute doesn't warn
6503 cat > conftest1.s <<EOF
6506 cat > conftest2.s <<EOF
6509 if $gcc_cv_as -a32 -o conftest1.o conftest1.s > /dev/null 2>&1 \
6510 && $gcc_cv_as -a32 -o conftest2.o conftest2.s > /dev/null 2>&1 \
6511 && $gcc_cv_ld $emul_name -r -o conftest.o conftest1.o conftest2.o > /dev/null 2> conftest.err \
6512 && test ! -s conftest.err; then
6513 gcc_cv_ld_ppc_attr=yes
6515 rm -f conftest.err conftest.o conftest1.o conftest2.o conftest1.s conftest2.s
6518 if test x$gcc_cv_ld_ppc_attr = xyes; then
6519 AC_DEFINE(HAVE_LD_PPC_GNU_ATTR_LONG_DOUBLE, 1,
6520 [Define if your PowerPC linker has .gnu.attributes long double support.])
6525 case "$target:$tm_file" in
6526 powerpc64*-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
6529 emul_name="-melf64lppc"
6532 emul_name="-melf64ppc"
6535 emul_name="-melf64lppc_fbsd"
6538 emul_name="-melf64ppc_fbsd"
6541 AC_CACHE_CHECK(linker support for omitting dot symbols,
6542 gcc_cv_ld_no_dot_syms,
6543 [gcc_cv_ld_no_dot_syms=no
6544 if test x"$ld_is_gold" = xyes; then
6545 gcc_cv_ld_no_dot_syms=yes
6546 elif test $in_tree_ld = yes ; then
6547 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
6548 gcc_cv_ld_no_dot_syms=yes
6550 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6551 cat > conftest1.s <<EOF
6555 cat > conftest2.s <<EOF
6556 .section ".opd","aw"
6561 .quad .LEfoo,.TOC.@tocbase,0
6567 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
6568 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
6569 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
6570 gcc_cv_ld_no_dot_syms=yes
6572 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
6575 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
6576 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
6577 [Define if your PowerPC64 linker only needs function descriptor syms.])
6580 AC_CACHE_CHECK(linker large toc support,
6581 gcc_cv_ld_large_toc,
6582 [gcc_cv_ld_large_toc=no
6583 if test x"$ld_is_gold" = xyes; then
6584 gcc_cv_ld_large_toc=yes
6585 elif test $in_tree_ld = yes ; then
6586 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
6587 gcc_cv_ld_large_toc=yes
6589 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6590 cat > conftest.s <<EOF
6591 .section ".tbss","awT",@nobits
6597 addis 9,13,ie0@got@tprel@ha
6598 ld 9,ie0@got@tprel@l(9)
6600 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
6601 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
6602 gcc_cv_ld_large_toc=yes
6604 rm -f conftest conftest.o conftest.s
6607 if test x"$gcc_cv_ld_large_toc" = xyes; then
6608 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
6609 [Define if your PowerPC64 linker supports a large TOC.])
6612 AC_CACHE_CHECK(linker toc pointer alignment,
6613 gcc_cv_ld_toc_align,
6614 [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then
6615 cat > conftest.s <<EOF
6620 .section .data.rel.ro,"aw",@progbits
6625 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
6626 && $gcc_cv_ld $emul_name -z norelro -o conftest conftest.o > /dev/null 2>&1; then
6627 gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'`
6629 rm -f conftest conftest.o conftest.s
6632 if test -n "$gcc_cv_ld_toc_align" && test $gcc_cv_ld_toc_align -gt 8; then
6633 AC_DEFINE_UNQUOTED(POWERPC64_TOC_POINTER_ALIGNMENT, $gcc_cv_ld_toc_align,
6634 [Define to .TOC. alignment forced by your linker.])
6641 AC_CACHE_CHECK(linker large toc support,
6642 gcc_cv_ld_large_toc,
6643 [gcc_cv_ld_large_toc=no
6644 if test x$gcc_cv_as != x ; then
6645 cat > conftest.s <<EOF
6655 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
6656 gcc_cv_ld_large_toc=yes
6658 rm -f conftest conftest.o conftest.s
6661 if test x"$gcc_cv_ld_large_toc" = xyes; then
6662 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
6663 [Define if your PowerPC64 linker supports a large TOC.])
6668 AC_CACHE_CHECK(linker --build-id support,
6670 [gcc_cv_ld_buildid=no
6671 if test $in_tree_ld = yes ; then
6672 if test "$gcc_cv_gld_major_version" -eq 2 -a \
6673 "$gcc_cv_gld_minor_version" -ge 18 -o \
6674 "$gcc_cv_gld_major_version" -gt 2 \
6675 && test $in_tree_ld_is_elf = yes; then
6676 gcc_cv_ld_buildid=yes
6678 elif test x$gcc_cv_ld != x; then
6679 if $gcc_cv_ld --help 2>&1 | grep build-id > /dev/null; then
6680 gcc_cv_ld_buildid=yes
6683 if test x"$gcc_cv_ld_buildid" = xyes; then
6684 AC_DEFINE(HAVE_LD_BUILDID, 1,
6685 [Define if your linker supports --build-id.])
6688 AC_ARG_ENABLE(linker-build-id,
6689 [AS_HELP_STRING([--enable-linker-build-id],
6690 [compiler will always pass --build-id to linker])],
6692 enable_linker_build_id=no)
6694 if test x"$enable_linker_build_id" = xyes; then
6695 if test x"$gcc_cv_ld_buildid" = xyes; then
6696 AC_DEFINE(ENABLE_LD_BUILDID, 1,
6697 [Define if gcc should always pass --build-id to linker.])
6699 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
6703 # In binutils 2.21, GNU ld gained support for new emulations fully
6704 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
6705 AC_CACHE_CHECK(linker *_sol2 emulation support,
6706 gcc_cv_ld_sol2_emulation,
6707 [gcc_cv_ld_sol2_emulation=no
6708 if test $in_tree_ld = yes ; then
6709 if test "$gcc_cv_gld_major_version" -eq 2 -a \
6710 "$gcc_cv_gld_minor_version" -ge 21 -o \
6711 "$gcc_cv_gld_major_version" -gt 2 \
6712 && test $in_tree_ld_is_elf = yes; then
6713 gcc_cv_ld_sol2_emulation=yes
6715 elif test x$gcc_cv_ld != x; then
6716 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
6717 grep _sol2 > /dev/null; then
6718 gcc_cv_ld_sol2_emulation=yes
6721 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
6722 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
6723 [Define if your linker supports the *_sol2 emulations.])
6726 AC_CACHE_CHECK(linker --sysroot support,
6728 [gcc_cv_ld_sysroot=no
6729 if test $in_tree_ld = yes ; then
6730 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
6731 gcc_cv_ld_sysroot=yes
6733 elif test x$gcc_cv_ld != x; then
6734 if $gcc_cv_ld --help 2>&1 | grep sysroot > /dev/null; then
6735 gcc_cv_ld_sysroot=yes
6738 if test x"$gcc_cv_ld_sysroot" = xyes; then
6739 AC_DEFINE(HAVE_LD_SYSROOT, 1,
6740 [Define if your linker supports --sysroot.])
6745 # Check for system-provided CRTs on Solaris 11.x and Solaris 12.
6746 AC_CACHE_CHECK([system-provided CRTs on Solaris],
6747 gcc_cv_solaris_crts,
6748 [gcc_cv_solaris_crts=no
6749 if test x$host != x$target; then
6750 if test "x$with_sysroot" = xyes; then
6751 target_sysroot="${test_exec_prefix}/${target_noncanonical}/sys-root"
6753 target_sysroot="${with_sysroot}"
6756 target_libdir="$target_sysroot/usr/lib"
6757 # At the time they were added, gcrt1.o became a symlink for backwards
6758 # compatibility on x86, while crt1.o was added on sparc, so check for that.
6760 i?86-*-solaris2* | x86_64-*-solaris2*)
6761 if test -h "$target_libdir/gcrt1.o"; then gcc_cv_solaris_crts=yes; fi
6764 if test -f "$target_libdir/crt1.o"; then gcc_cv_solaris_crts=yes; fi
6769 if test x$gcc_cv_solaris_crts = xyes; then
6770 AC_DEFINE(HAVE_SOLARIS_CRTS, 1,
6771 [Define if the system-provided CRTs are present on Solaris.])
6774 AC_ARG_ENABLE(libssp,
6775 [AS_HELP_STRING([--enable-libssp], [enable linking against libssp])],
6776 [case "${enableval}" in
6780 AC_MSG_ERROR([unknown libssp setting $enableval])
6784 # Test for stack protector support in target C library.
6785 AC_CACHE_CHECK(__stack_chk_fail in target C library,
6786 gcc_cv_libc_provides_ssp,
6787 [gcc_cv_libc_provides_ssp=no
6788 if test "x$enable_libssp" = "xno"; then
6789 gcc_cv_libc_provides_ssp=yes
6790 elif test "x$enable_libssp" = "xyes"; then
6791 gcc_cv_libc_provides_ssp=no
6795 # All versions of musl provide stack protector
6796 gcc_cv_libc_provides_ssp=yes;;
6797 *-*-linux* | *-*-kfreebsd*-gnu)
6798 # glibc 2.4 and later provides __stack_chk_fail and
6799 # either __stack_chk_guard, or TLS access to stack guard canary.
6800 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
6801 [if test -f $target_header_dir/features.h \
6802 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
6803 $target_header_dir/features.h > /dev/null; then
6804 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
6805 $target_header_dir/features.h > /dev/null && \
6806 test -f $target_header_dir/bits/uClibc_config.h && \
6807 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
6808 $target_header_dir/bits/uClibc_config.h > /dev/null; then
6809 gcc_cv_libc_provides_ssp=yes
6811 # all versions of Bionic support stack protector
6812 elif test -f $target_header_dir/sys/cdefs.h \
6813 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
6814 $target_header_dir/sys/cdefs.h > /dev/null; then
6815 gcc_cv_libc_provides_ssp=yes
6819 # Avoid complicated tests (see
6820 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
6821 # simply assert that glibc does provide this, which is true for all
6822 # realistically usable GNU/Hurd configurations.
6823 # All supported versions of musl provide it as well
6824 gcc_cv_libc_provides_ssp=yes;;
6825 *-*-darwin* | *-*-freebsd* | *-*-netbsd*)
6826 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
6827 [echo "no __stack_chk_fail on this target"])
6829 *) gcc_cv_libc_provides_ssp=no ;;
6833 if test x$gcc_cv_libc_provides_ssp = xyes; then
6834 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
6835 [Define if your target C library provides stack protector support])
6838 # Check whether --enable-default-ssp was given.
6839 AC_ARG_ENABLE(default-ssp,
6840 [AS_HELP_STRING([--enable-default-ssp],
6841 [enable Stack Smashing Protection as default])],[
6842 if test x$gcc_cv_libc_provides_ssp = xyes; then
6844 ia64*-*-*) enable_default_ssp=no ;;
6845 *) enable_default_ssp=$enableval ;;
6848 enable_default_ssp=no
6850 enable_default_ssp=no)
6851 if test x$enable_default_ssp = xyes ; then
6852 AC_DEFINE(ENABLE_DEFAULT_SSP, 1,
6853 [Define if your target supports default stack protector and it is enabled.])
6855 AC_SUBST([enable_default_ssp])
6857 # Test for <sys/sdt.h> on the target.
6858 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
6859 AC_CACHE_CHECK([sys/sdt.h in the target C library], [gcc_cv_sys_sdt_h], [
6861 if test -f $target_header_dir/sys/sdt.h; then
6862 gcc_cv_sys_sdt_h=yes
6865 AS_IF([test x$gcc_cv_sys_sdt_h = xyes], [
6866 AC_DEFINE([HAVE_SYS_SDT_H], [1],
6867 [Define if your target C library provides sys/sdt.h])
6870 # Check if TFmode long double should be used by default or not.
6871 # Some glibc targets used DFmode long double, but with glibc 2.4
6872 # and later they can use TFmode.
6874 powerpc*-*-linux* | \
6878 AC_ARG_WITH(long-double-128,
6879 [AS_HELP_STRING([--with-long-double-128],
6880 [use 128-bit long double by default])],
6881 gcc_cv_target_ldbl128="$with_long_double_128", [
6883 s390*-*-linux-musl*)
6884 gcc_cv_target_ldbl128=yes
6886 powerpc*-*-linux-musl*)
6887 gcc_cv_target_ldbl128=no
6890 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
6891 [gcc_cv_target_ldbl128=no
6892 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
6893 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
6894 && gcc_cv_target_ldbl128=yes
6902 if test x$gcc_cv_target_ldbl128 = xyes; then
6903 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
6904 [Define if TFmode long double should be the default])
6907 # Check if TFmode long double target should use the IBM extended double or IEEE
6908 # 128-bit floating point formats if long doubles are 128-bits long. The long
6909 # double type can only be switched on powerpc64 bit Linux systems where VSX is
6910 # supported. Other PowerPC systems do not build the IEEE 128-bit emulator in
6912 AC_ARG_WITH([long-double-format],
6913 [AS_HELP_STRING([--with-long-double-format={ieee,ibm}]
6914 [Specify whether PowerPC long double uses IEEE or IBM format])],[
6915 case "$target:$with_long_double_format" in
6916 powerpc64le-*-linux*:ieee | powerpc64le-*-linux*:ibm)
6919 powerpc64-*-linux*:ieee | powerpc64-*-linux*:ibm)
6920 # IEEE 128-bit emulation is only built on 64-bit VSX Linux systems
6922 power7 | power8 | power9 | power1*)
6926 AC_MSG_ERROR([Configuration option --with-long-double-format is only \
6927 supported if the default cpu is power7 or newer])
6928 with_long_double_format=""
6932 powerpc64*-*-linux*:*)
6933 AC_MSG_ERROR([--with-long-double-format argument should be ibm or ieee])
6934 with_long_double_format=""
6937 AC_MSG_ERROR([Configure option --with-long-double-format is only supported \
6938 on 64-bit PowerPC VSX Linux systems])
6939 with_long_double_format=""
6944 # Check if the target LIBC supports exporting the AT_PLATFORM and AT_HWCAP
6945 # values in the TCB. Currently, only GLIBC 2.23 and later support this.
6946 gcc_cv_libc_provides_hwcap_in_tcb=no
6949 GCC_GLIBC_VERSION_GTE_IFELSE([2], [23], [gcc_cv_libc_provides_hwcap_in_tcb=yes], )
6952 if test x$gcc_cv_libc_provides_hwcap_in_tcb = xyes; then
6953 AC_DEFINE(TARGET_LIBC_PROVIDES_HWCAP_IN_TCB, 1,
6954 [Define if your target C Library provides the AT_HWCAP value in the TCB])
6957 # Check if the target LIBC handles PT_GNU_STACK.
6958 gcc_cv_libc_gnustack=unknown
6960 mips*-*-linux-musl*)
6961 gcc_cv_libc_gnustack=yes
6964 GCC_GLIBC_VERSION_GTE_IFELSE([2], [31], [gcc_cv_libc_gnustack=yes], )
6967 if test x$gcc_cv_libc_gnustack = xyes; then
6968 AC_DEFINE(TARGET_LIBC_GNUSTACK, 1,
6969 [Define if your target C Library properly handles PT_GNU_STACK])
6972 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
6973 gcc_cv_target_dl_iterate_phdr=unknown
6976 # <link.h> needs both a dl_iterate_phdr declaration and support for
6977 # compilation with largefile support.
6978 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
6979 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
6980 gcc_cv_target_dl_iterate_phdr=yes
6982 gcc_cv_target_dl_iterate_phdr=no
6985 *-*-dragonfly* | *-*-freebsd*)
6986 if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then
6987 gcc_cv_target_dl_iterate_phdr=yes
6989 gcc_cv_target_dl_iterate_phdr=no
6993 gcc_cv_target_dl_iterate_phdr=yes
6996 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
6997 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
6998 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
6999 [Define if your target C library provides the `dl_iterate_phdr' function.])
7001 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
7003 # We no longer support different GC mechanisms. Emit an error if
7004 # the user configures with --with-gc.
7006 [AS_HELP_STRING([--with-gc={page,zone}],
7007 [this option is not supported anymore. It used to choose
7008 the garbage collection mechanism to use with the compiler])],
7009 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
7012 # Libraries to use on the host. This will normally be set by the top
7013 # level Makefile. Here we simply capture the value for our Makefile.
7014 if test -z "${HOST_LIBS+set}"; then
7019 # Use the system's zlib library.
7022 dnl Very limited version of automake's enable-maintainer-mode
7024 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
7025 dnl maintainer-mode is disabled by default
7026 AC_ARG_ENABLE(maintainer-mode,
7027 [AS_HELP_STRING([--enable-maintainer-mode],
7028 [enable make rules and dependencies not useful
7029 (and sometimes confusing) to the casual installer])],
7030 maintainer_mode=$enableval,
7033 AC_MSG_RESULT($maintainer_mode)
7035 if test "$maintainer_mode" = "yes"; then
7042 dnl Variables for tags utilities; copied from automake 1.16.4+'s init.m4
7043 if test -z "$CTAGS"; then
7047 if test -z "$ETAGS"; then
7051 if test -z "$CSCOPE"; then
7056 dnl Whether to prevent multiple front-ends from linking at the same time
7058 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
7059 AC_ARG_ENABLE(link-mutex,
7060 [AS_HELP_STRING([--enable-link-mutex],
7061 [avoid linking multiple front-ends at once to avoid thrashing
7062 on the build machine])],
7063 do_link_mutex=$enableval,
7065 AC_MSG_RESULT($do_link_mutex)
7067 if test "$do_link_mutex" = "yes"; then
7069 AC_MSG_WARN([--enable-link-mutex is deprecated and will be removed in the next release, use --enable-link-serialization instead])
7073 AC_SUBST(DO_LINK_MUTEX)
7075 dnl Whether to prevent multiple GCC front-ends from linking at the same time
7077 AC_MSG_CHECKING([whether to serialize linking of multiple front-ends])
7078 AC_ARG_ENABLE(link-serialization,
7079 [AS_HELP_STRING([--enable-link-serialization],
7080 [avoid linking multiple GCC front-ends at once using make
7081 dependencies to avoid thrashing on the build machine])],
7082 do_link_serialization=$enableval,
7083 do_link_serialization=no)
7084 AC_MSG_RESULT($do_link_serialization)
7086 case "$do_link_serialization" in
7088 DO_LINK_SERIALIZATION=1;;
7089 [[1-9]] | [[1-9]][[0-9]] | [[1-9]][[0-9]][[0-9]])
7090 DO_LINK_SERIALIZATION=$do_link_serialization;;
7092 DO_LINK_SERIALIZATION=;;
7094 AC_MSG_ERROR(bad value ${do_link_serialization} given for --enable-link-serialization) ;;
7096 AC_SUBST(DO_LINK_SERIALIZATION)
7102 # Make empty files to contain the specs and options for each language.
7103 # Then add #include lines to for a compiler that has specs and/or options.
7109 # These (without "all_") are set in each config-lang.in.
7110 # `language' must be a single word so is spelled singularly.
7113 all_outputs='Makefile'
7114 # List of language configure and makefile fragments.
7115 all_lang_configurefrags=
7117 # Additional files for gengtype
7118 all_gtfiles="$target_gtfiles"
7120 # These are the languages that are set in --enable-languages,
7121 # and are available in the GCC tree.
7122 all_selected_languages=
7124 # Add the language fragments.
7125 # Languages are added via two mechanisms. Some information must be
7126 # recorded in makefile variables, these are defined in config-lang.in.
7127 # We accumulate them and plug them into the main Makefile.
7128 # The other mechanism is a set of hooks for each of the main targets
7129 # like `clean', `install', etc.
7131 language_hooks="Make-hooks"
7133 for lang in ${srcdir}/*/config-lang.in
7136 test "$lang" = "${srcdir}/*/config-lang.in" && continue
7138 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
7139 if test "x$lang_alias" = x
7141 echo "$lang doesn't set \$language." 1>&2
7144 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
7145 subdirs="$subdirs $subdir"
7147 # $gcc_subdir is where the gcc integration files are to be found
7148 # for a language, both for internal compiler purposes (compiler
7149 # sources implementing front-end to GCC tree converters), and for
7150 # build infrastructure purposes (Make-lang.in, etc.)
7152 # This will be <subdir> (relative to $srcdir) if a line like
7153 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
7154 # is found in <langdir>/config-lang.in, and will remain <langdir>
7157 # Except for the language alias (fetched above), the regular
7158 # "config-lang.in" contents are always retrieved from $gcc_subdir,
7159 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
7160 # only this and the language alias.
7162 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
7163 if [ "$gcc_subdir" = "" ]; then
7164 gcc_subdir="$subdir"
7167 case ",$enable_languages," in
7169 all_selected_languages="$all_selected_languages $lang_alias"
7170 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
7171 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
7183 . ${srcdir}/$gcc_subdir/config-lang.in
7184 if test "x$language" = x
7186 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
7191 case ",$enable_languages," in
7194 for i in $subdir_requires; do
7195 test -f "${srcdir}/$i/config-lang.in" && continue
7203 all_lang_configurefrags="$all_lang_configurefrags \$(srcdir)/$gcc_subdir/config-lang.in"
7204 if test "x$language" = xc && test -n "$all_lang_makefrags"; then
7205 # Put c/Make-lang.in fragment first to match serialization languages order.
7206 all_lang_makefrags="\$(srcdir)/$gcc_subdir/Make-lang.in $all_lang_makefrags"
7208 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
7210 if test -f $srcdir/$gcc_subdir/lang.opt; then
7211 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
7212 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
7214 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
7215 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
7217 all_languages="$all_languages $language"
7218 all_compilers="$all_compilers $compilers"
7219 all_outputs="$all_outputs $outputs"
7220 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
7221 case ",$enable_languages," in
7223 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
7225 AC_SUBST(enable_lto)
7232 for language in $all_selected_languages
7234 check_languages="$check_languages check-$language"
7238 for language in $all_selected_languages
7240 selftest_languages="$selftest_languages selftest-$language"
7243 # We link each language in with a set of hooks, reached indirectly via
7244 # lang.${target}. Only do so for selected languages.
7248 target_list="all.cross start.encap rest.encap tags \
7249 install-common install-man install-info install-dvi install-pdf \
7250 install-html dvi pdf html uninstall info man srcextra srcman srcinfo \
7251 mostlyclean clean distclean maintainer-clean install-plugin"
7253 for t in $target_list
7256 for lang in $all_selected_languages
7260 echo "lang.$t: $x" >> Make-hooks
7263 echo "ifeq (\$(DO_LINK_SERIALIZATION),)" >> Make-hooks
7264 echo "SERIAL_LIST =" >> Make-hooks
7265 echo else >> Make-hooks
7269 serialization_languages=c
7270 for lang in $all_selected_languages
7272 test $lang = c && continue
7273 if test $lang = lto; then
7274 serialization_languages="$serialization_languages lto1 lto2"
7276 serialization_languages="$serialization_languages $lang"
7279 for lang in $serialization_languages
7281 test $lang = c && continue
7282 lang_cnt=`expr $lang_cnt + 1`
7283 lang_list=" $prev$lang_list"
7286 echo "SERIAL_LIST = \$(wordlist \$(DO_LINK_SERIALIZATION),$lang_cnt,$lang_list)" >> Make-hooks
7287 echo endif >> Make-hooks
7288 echo "SERIAL_COUNT = `expr $lang_cnt + 1`" >> Make-hooks
7289 echo "INDEX.c = 0" >> Make-hooks
7291 for lang in $serialization_languages
7293 test $lang = c && continue
7294 echo "$lang.prev = \$(if \$(word $lang_cnt,\$(SERIAL_LIST)),\$(\$(word $lang_cnt,\$(SERIAL_LIST)).serial))" >> Make-hooks
7295 echo "INDEX.$lang = $lang_idx" >> Make-hooks
7296 lang_cnt=`expr $lang_cnt - 1`
7297 lang_idx=`expr $lang_idx + 1`
7301 # Option include files
7304 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
7305 option_includes="option-includes.mk"
7306 AC_SUBST_FILE(option_includes)
7314 echo "dir ." > .gdbinit
7315 echo "dir ${srcdir}" >> .gdbinit
7316 if test x$gdb_needs_out_file_path = xyes
7318 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
7320 if test "x$subdirs" != x; then
7323 echo "dir ${srcdir}/$s" >> .gdbinit
7326 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
7327 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
7329 # Put a breakpoint on __asan_report_error to help with debugging buffer
7332 *-fsanitize=address*)
7333 echo "source ${srcdir}/gdbasan.in" >> .gdbinit
7337 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
7338 AC_SUBST(gcc_tooldir)
7341 # Find a directory in which to install a shared libgcc.
7343 AC_ARG_ENABLE(version-specific-runtime-libs,
7344 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
7345 [specify that runtime libraries should be
7346 installed in a compiler-specific directory])])
7348 # Substitute configuration variables
7351 AC_SUBST(all_compilers)
7352 AC_SUBST(all_gtfiles)
7353 AC_SUBST(all_lang_configurefrags)
7354 AC_SUBST(all_lang_makefrags)
7355 AC_SUBST(all_languages)
7356 AC_SUBST(all_selected_languages)
7357 AC_SUBST(build_exeext)
7358 AC_SUBST(build_install_headers_dir)
7359 AC_SUBST(build_xm_file_list)
7360 AC_SUBST(build_xm_include_list)
7361 AC_SUBST(build_xm_defines)
7362 AC_SUBST(build_file_translate)
7363 AC_SUBST(check_languages)
7364 AC_SUBST(selftest_languages)
7365 AC_SUBST(cpp_install_dir)
7366 AC_SUBST(xmake_file)
7367 AC_SUBST(tmake_file)
7368 AC_SUBST(TM_ENDIAN_CONFIG)
7369 AC_SUBST(TM_MULTILIB_CONFIG)
7370 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
7371 AC_SUBST(extra_gcc_objs)
7372 AC_SUBST(user_headers_inc_next_pre)
7373 AC_SUBST(user_headers_inc_next_post)
7374 AC_SUBST(extra_headers_list)
7375 AC_SUBST(extra_objs)
7376 AC_SUBST(extra_programs)
7377 AC_SUBST(float_h_file)
7378 AC_SUBST(gcc_config_arguments)
7379 AC_SUBST(gcc_gxx_include_dir)
7380 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
7381 AC_SUBST(gcc_gxx_libcxx_include_dir)
7382 AC_SUBST(gcc_gxx_libcxx_include_dir_add_sysroot)
7383 AC_SUBST(host_exeext)
7384 AC_SUBST(host_xm_file_list)
7385 AC_SUBST(host_xm_include_list)
7386 AC_SUBST(host_xm_defines)
7387 AC_SUBST(out_host_hook_obj)
7389 AC_SUBST(lang_opt_files)
7390 AC_SUBST(lang_specs_files)
7391 AC_SUBST(lang_tree_files)
7392 AC_SUBST(local_prefix)
7394 AC_SUBST(objc_boehm_gc)
7396 AC_SUBST(out_object_file)
7397 AC_SUBST(common_out_file)
7398 AC_SUBST(common_out_object_file)
7399 AC_SUBST(tm_file_list)
7400 AC_SUBST(tm_include_list)
7401 AC_SUBST(tm_defines)
7402 AC_SUBST(tm_p_file_list)
7403 AC_SUBST(tm_p_include_list)
7404 AC_SUBST(tm_d_file_list)
7405 AC_SUBST(tm_d_include_list)
7406 AC_SUBST(xm_file_list)
7407 AC_SUBST(xm_include_list)
7408 AC_SUBST(xm_defines)
7409 AC_SUBST(use_gcc_stdint)
7410 AC_SUBST(c_target_objs)
7411 AC_SUBST(cxx_target_objs)
7412 AC_SUBST(fortran_target_objs)
7413 AC_SUBST(d_target_objs)
7414 AC_SUBST(target_cpu_default)
7416 AC_SUBST_FILE(language_hooks)
7419 if test x${build} = x${host} ; then
7420 if test x${host} = x${target} ; then
7421 echo "Links are now set up to build a native compiler for ${target}." 1>&2
7423 echo "Links are now set up to build a cross-compiler" 1>&2
7424 echo " from ${host} to ${target}." 1>&2
7427 if test x${host} = x${target} ; then
7428 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
7429 echo " for ${target}." 1>&2
7431 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
7432 echo " from ${host} to ${target}." 1>&2
7436 AC_ARG_VAR(GMPLIBS,[How to link GMP])
7437 AC_ARG_VAR(GMPINC,[How to find GMP include files])
7439 AC_ARG_VAR(ISLLIBS,[How to link isl])
7440 AC_ARG_VAR(ISLINC,[How to find isl include files])
7441 if test "x${ISLLIBS}" != "x" ; then
7442 AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.])
7446 AC_SUBST(pluginlibs)
7447 AC_SUBST(enable_plugin)
7448 if test x"$enable_plugin" = x"yes"; then
7449 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
7453 # Enable --enable-host-shared
7454 AC_ARG_ENABLE(host-shared,
7455 [AS_HELP_STRING([--enable-host-shared],
7456 [build host code as shared libraries])])
7457 AC_SUBST(enable_host_shared)
7459 # Enable --enable-host-pie
7460 AC_ARG_ENABLE(host-pie,
7461 [AS_HELP_STRING([--enable-host-pie],
7462 [build host code as PIE])])
7463 AC_SUBST(enable_host_pie)
7465 # Enable --enable-host-bind-now
7466 AC_ARG_ENABLE(host-bind-now,
7467 [AS_HELP_STRING([--enable-host-bind-now],
7468 [link host code as BIND_NOW])])
7469 AC_SUBST(enable_host_bind_now)
7471 AC_ARG_ENABLE(libquadmath-support,
7472 [AS_HELP_STRING([--disable-libquadmath-support],
7473 [disable libquadmath support for Fortran])],
7474 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
7475 ENABLE_LIBQUADMATH_SUPPORT=yes)
7476 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
7477 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
7478 [Define to 1 to enable libquadmath support])
7482 # Specify what hash style to use by default.
7483 AC_ARG_WITH([linker-hash-style],
7484 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
7485 [specify the linker hash style])],
7486 [case x"$withval" in
7488 LINKER_HASH_STYLE=sysv
7491 LINKER_HASH_STYLE=gnu
7494 LINKER_HASH_STYLE=both
7497 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
7500 [LINKER_HASH_STYLE=''])
7501 if test x"${LINKER_HASH_STYLE}" != x; then
7502 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
7503 [The linker hash style])
7506 # Specify what should be the default of -fdiagnostics-color option.
7507 AC_ARG_WITH([diagnostics-color],
7508 [AC_HELP_STRING([--with-diagnostics-color={never,auto,auto-if-env,always}],
7509 [specify the default of -fdiagnostics-color option
7510 auto-if-env stands for -fdiagnostics-color=auto if
7511 GCC_COLOR environment variable is present and
7512 -fdiagnostics-color=never otherwise])],
7513 [case x"$withval" in
7515 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_NO
7518 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO
7521 DIAGNOSTICS_COLOR_DEFAULT=-1
7524 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_YES
7527 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-color])
7530 [DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO])
7531 AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT,
7532 [The default for -fdiagnostics-color option])
7534 # Specify what should be the default of -fdiagnostics-urls option.
7535 AC_ARG_WITH([diagnostics-urls],
7536 [AC_HELP_STRING([--with-diagnostics-urls={never,auto,auto-if-env,always}],
7537 [specify the default of -fdiagnostics-urls option
7538 auto-if-env stands for -fdiagnostics-urls=auto if
7539 GCC_URLS or TERM_URLS environment variable is present and
7540 -fdiagnostics-urls=never otherwise])],
7541 [case x"$withval" in
7543 DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_NO
7546 DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_AUTO
7549 DIAGNOSTICS_URLS_DEFAULT=-1
7552 DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_YES
7555 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-urls])
7558 [DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_AUTO])
7559 AC_DEFINE_UNQUOTED(DIAGNOSTICS_URLS_DEFAULT, $DIAGNOSTICS_URLS_DEFAULT,
7560 [The default for -fdiagnostics-urls option])
7562 # Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit
7563 # of jit/jit-playback.cc.
7564 gcc_driver_version=`eval "${get_gcc_base_ver} $srcdir/BASE-VER"`
7565 echo "gcc_driver_version: ${gcc_driver_version}"
7566 cat > gcc-driver-name.h <<EOF
7567 #define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_driver_version}${exeext}"
7570 # Check whether --enable-default-pie was given.
7571 AC_ARG_ENABLE(default-pie,
7572 [AS_HELP_STRING([--enable-default-pie],
7573 [enable Position Independent Executable as default])],
7574 enable_default_pie=$enableval,
7575 enable_default_pie=no)
7576 if test x$enable_default_pie = xyes ; then
7577 AC_DEFINE(ENABLE_DEFAULT_PIE, 1,
7578 [Define if your target supports default PIE and it is enabled.])
7580 AC_SUBST([enable_default_pie])
7582 # Check if -fno-PIE works.
7583 AC_CACHE_CHECK([for -fno-PIE option],
7585 [saved_CXXFLAGS="$CXXFLAGS"
7586 CXXFLAGS="$CXXFLAGS -fno-PIE"
7587 AC_COMPILE_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
7588 [gcc_cv_c_no_fpie=yes],
7589 [gcc_cv_c_no_fpie=no])
7590 CXXFLAGS="$saved_CXXFLAGS"])
7592 # Check if -no-pie works.
7593 AC_CACHE_CHECK([for -no-pie option],
7595 [saved_LDFLAGS="$LDFLAGS"
7596 LDFLAGS="$LDFLAGS -no-pie"
7597 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
7598 [gcc_cv_no_pie=yes],
7600 LDFLAGS="$saved_LDFLAGS"])
7602 if test x$enable_host_shared = xyes; then
7604 elif test x$enable_host_pie = xyes; then
7606 elif test x$gcc_cv_c_no_fpie = xyes; then
7614 if test x$enable_host_pie = xyes; then
7616 elif test x$gcc_cv_no_pie = xyes; then
7622 if test x$enable_host_bind_now = xyes; then
7623 LD_PICFLAG="$LD_PICFLAG -Wl,-z,now"
7626 AC_SUBST([LD_PICFLAG])
7628 # Enable Intel CET on Intel CET enabled host if jit is enabled.
7629 GCC_CET_HOST_FLAGS(CET_HOST_FLAGS)
7630 case x$enable_languages in
7637 AC_SUBST(CET_HOST_FLAGS)
7639 # Check linker supports '-z bndplt'
7640 ld_bndplt_support=no
7641 AC_MSG_CHECKING(linker -z bndplt option)
7642 if test x"$ld_is_gold" = xno; then
7643 if test $in_tree_ld = yes ; then
7644 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
7645 ld_bndplt_support=yes
7647 elif test x$gcc_cv_ld != x; then
7648 # Check if linker supports -a bndplt option
7649 if $gcc_cv_ld --help 2>&1 | grep -- '-z bndplt' > /dev/null; then
7650 ld_bndplt_support=yes
7654 if test x"$ld_bndplt_support" = xyes; then
7655 AC_DEFINE(HAVE_LD_BNDPLT_SUPPORT, 1,
7656 [Define if your linker supports -z bndplt])
7658 AC_MSG_RESULT($ld_bndplt_support)
7660 # Check linker supports '--push-state'/'--pop-state'
7661 ld_pushpopstate_support=no
7662 AC_MSG_CHECKING(linker --push-state/--pop-state options)
7663 if test x"$ld_is_gold" = xno; then
7664 if test $in_tree_ld = yes ; then
7665 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
7666 ld_pushpopstate_support=yes
7668 elif test x$gcc_cv_ld != x; then
7669 # Check if linker supports --push-state/--pop-state options
7670 if $gcc_cv_ld --help 2>&1 | grep -- '--push-state' > /dev/null; then
7671 ld_pushpopstate_support=yes
7675 if test x"$ld_pushpopstate_support" = xyes; then
7676 AC_DEFINE(HAVE_LD_PUSHPOPSTATE_SUPPORT, 1,
7677 [Define if your linker supports --push-state/--pop-state])
7679 AC_MSG_RESULT($ld_pushpopstate_support)
7681 # On s390, float_t has historically been statically defined as double for no
7682 # good reason. To comply with the C standard in the light of this definition,
7683 # gcc has evaluated float expressions in double precision when in
7684 # standards-compatible mode or when given -fexcess-precision=standard. To enable
7685 # a smooth transition towards the new model used by most architectures, where
7686 # gcc describes its behavior via the macro __FLT_EVAL_METHOD__ and glibc derives
7687 # float_t from that, this behavior can be configured with
7688 # --enable-s390-excess-float-precision. When given as enabled, that flag selects
7689 # the old model. When omitted, native builds and cross compiles that have target
7690 # libc headers will detect whether libc clamps float_t to double and in that
7691 # case maintain the old model. Otherwise, they will default to the new model.
7692 AC_ARG_ENABLE(s390-excess-float-precision,
7693 [AS_HELP_STRING([--enable-s390-excess-float-precision],
7694 [on s390 targets, evaluate float with double precision
7695 when in standards-conforming mode])],
7696 [],[enable_s390_excess_float_precision=auto])
7700 if test x"$enable_s390_excess_float_precision" = xauto; then
7701 # Can we autodetect the behavior of the target libc?
7702 if test "$target" = "$host" -a "$host" = "$build"; then
7703 enable_s390_excess_float_precision=autodetect
7704 elif test "x$with_headers" != xno; then
7705 # cross build. are target headers available?
7706 # carefully coerce the build-system compiler to use target headers
7707 saved_CXXFLAGS="$CXXFLAGS"
7708 fixed_XGCC_FLAGS_FOR_TARGET=`echo "$XGCC_FLAGS_FOR_TARGET" | sed 's/-B/-idirafter/g'`
7709 CROSS_TEST_CXXFLAGS="-nostdinc $fixed_XGCC_FLAGS_FOR_TARGET"
7710 CXXFLAGS="$CROSS_TEST_CXXFLAGS"
7711 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
7713 ]])], [enable_s390_excess_float_precision=autodetect], [])
7714 CXXFLAGS="$saved_CXXFLAGS"
7717 if test x"$enable_s390_excess_float_precision" = xautodetect; then
7718 saved_CXXFLAGS="$CXXFLAGS"
7719 if ! test "$target" = "$host" -a "$host" = "$build"; then
7720 CXXFLAGS="$CROSS_TEST_CXXFLAGS"
7721 unset CROSS_TEST_CXXFLAGS
7723 AC_CACHE_CHECK([for glibc clamping float_t to double],
7724 gcc_cv_float_t_clamped_to_double, [
7725 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
7726 #define __FLT_EVAL_METHOD__ 0
7728 int dummy[sizeof(float_t) == sizeof(double) ? 1 : -1];
7730 [gcc_cv_float_t_clamped_to_double=yes],
7731 [gcc_cv_float_t_clamped_to_double=no])])
7732 CXXFLAGS="$saved_CXXFLAGS"
7733 enable_s390_excess_float_precision="$gcc_cv_float_t_clamped_to_double"
7735 # no way to detect behavior of target libc, default to new model
7736 enable_s390_excess_float_precision=no
7740 GCC_TARGET_TEMPLATE(ENABLE_S390_EXCESS_FLOAT_PRECISION)
7741 if test x"$enable_s390_excess_float_precision" = xyes; then
7742 AC_DEFINE(ENABLE_S390_EXCESS_FLOAT_PRECISION, 1,
7743 [Define to enable evaluating float expressions with double precision in
7744 standards-compatible mode on s390 targets.])
7749 # Configure the subdirectories
7750 # AC_CONFIG_SUBDIRS($subdirs)
7752 # Create the Makefile
7753 # and configure language subdirectories
7754 AC_CONFIG_FILES($all_outputs)
7756 AC_CONFIG_COMMANDS([default],
7758 case ${CONFIG_HEADERS} in
7759 *auto-host.h:config.in*)
7762 # Make sure all the subdirs exist.
7763 for d in $subdirs doc build common c-family
7765 test -d $d || mkdir $d
7768 [subdirs='$subdirs'])