2 # Process this file with autoconf to generate a configuration script.
4 # Copyright (C) 1997-2024 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=
781 if test x$ac_valgrind_checking != x ; then
782 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
783 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
784 if test "x$valgrind_path" = "x"; then
785 AC_MSG_ERROR([*** Cannot find valgrind])
787 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
788 valgrind_command="$valgrind_path -q"
789 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
790 [Define if you want to run subprograms and generated programs
791 through valgrind (a memory checker). This is extremely expensive.])
793 AC_SUBST(valgrind_path_defines)
794 AC_SUBST(valgrind_command)
796 # Enable code coverage collection
797 AC_ARG_ENABLE(coverage,
798 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
799 [enable compiler's code coverage collection.
800 Use to measure compiler performance and locate
801 unused parts of the compiler. With LEVEL, specify
802 optimization. Values are opt, noopt,
804 [case "${enableval}" in
806 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0 -fkeep-static-functions"
809 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2 -fkeep-static-functions"
812 # a.k.a. --disable-coverage
816 AC_MSG_ERROR(unknown coverage setting $enableval)
820 AC_SUBST(coverage_flags)
822 AC_ARG_ENABLE(gather-detailed-mem-stats,
823 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
824 [enable detailed memory allocation stats gathering])], [],
825 [enable_gather_detailed_mem_stats=no])
826 gather_stats=`if test $enable_gather_detailed_mem_stats != no; then echo 1; else echo 0; fi`
827 AC_DEFINE_UNQUOTED(GATHER_STATISTICS, $gather_stats,
828 [Define to enable detailed memory allocation stats gathering.])
830 AC_ARG_ENABLE(valgrind-annotations,
831 [AS_HELP_STRING([--enable-valgrind-annotations],
832 [enable valgrind runtime interaction])], [],
833 [enable_valgrind_annotations=no])
834 AC_CHECK_HEADER(valgrind/memcheck.h)
835 if test x$enable_valgrind_annotations != xno \
836 || test x$ac_valgrind_checking != x; then
837 if test $ac_cv_header_valgrind_memcheck_h = no; then
838 AC_MSG_ERROR([*** Cannot find valgrind/memcheck.h])
840 AC_DEFINE(ENABLE_VALGRIND_ANNOTATIONS, 1,
841 [Define to get calls to the valgrind runtime enabled.])
844 # -------------------------------
845 # Miscenalleous configure options
846 # -------------------------------
848 # Determine whether or not multilibs are enabled.
849 AC_ARG_ENABLE(multilib,
850 [AS_HELP_STRING([--enable-multilib],
851 [enable library support for multiple ABIs])],
852 [], [enable_multilib=yes])
853 AC_SUBST(enable_multilib)
855 # Determine whether or not multiarch is enabled.
856 AC_ARG_ENABLE(multiarch,
857 [AS_HELP_STRING([--enable-multiarch],
858 [enable support for multiarch paths])],
859 [case "${enableval}" in
860 yes|no|auto) enable_multiarch=$enableval;;
861 *) AC_MSG_ERROR(bad value ${enableval} given for --enable-multiarch option) ;;
862 esac], [enable_multiarch=auto])
863 if test x${enable_multiarch} = xauto; then
864 if test x${with_native_system_header_dir} != x; then
865 ma_msg_suffix=", disabled auto check (configured with --native-system-header-dir)"
868 if test x$host != x$target && test "x$with_sysroot" = x; then
869 ma_msg_suffix=", disabled auto check (cross build configured without --with-sysroot)"
873 if test x${enable_multiarch} = xyes; then
874 AC_DEFINE(ENABLE_MULTIARCH, 1, [If --with-multiarch option is used])
876 AC_MSG_CHECKING(for multiarch configuration)
877 AC_SUBST(enable_multiarch)
878 AC_MSG_RESULT($enable_multiarch$ma_msg_suffix)
880 # needed for setting the multiarch name for soft-float/hard-float ABIs
884 # default stack clash protection guard size as power of twos in bytes.
885 # Please keep these in sync with params.def.
889 # Keep the default value when the option is not used to 0, this allows us to
890 # distinguish between the cases where the user specifially set a value via
891 # configure and when the normal default value is used.
892 AC_ARG_WITH(stack-clash-protection-guard-size,
893 [AS_HELP_STRING([--with-stack-clash-protection-guard-size=size],
894 [Set the default stack clash protection guard size for specific targets as a power of two in bytes.])],
895 [DEFAULT_STK_CLASH_GUARD_SIZE="$with_stack_clash_protection_guard_size"], [DEFAULT_STK_CLASH_GUARD_SIZE=0])
896 if test $DEFAULT_STK_CLASH_GUARD_SIZE -ne 0 \
897 && (test $DEFAULT_STK_CLASH_GUARD_SIZE -lt $stk_clash_min \
898 || test $DEFAULT_STK_CLASH_GUARD_SIZE -gt $stk_clash_max); then
899 AC_MSG_ERROR(m4_normalize([
900 Invalid value $DEFAULT_STK_CLASH_GUARD_SIZE for --with-stack-clash-protection-guard-size. \
901 Must be between $stk_clash_min and $stk_clash_max.]))
904 AC_DEFINE_UNQUOTED(DEFAULT_STK_CLASH_GUARD_SIZE, $DEFAULT_STK_CLASH_GUARD_SIZE,
905 [Define to larger than zero set the default stack clash protector size.])
907 # Specify the number of splits of match.pd to generate.
908 AC_ARG_WITH(matchpd-partitions,
909 [AS_HELP_STRING([--with-matchpd-partitions=num],
910 [Set the number of partitions to make for gimple and generic when splitting match.pd. [default=10]])],
911 [DEFAULT_MATCHPD_PARTITIONS="$with_matchpd_partitions"], [DEFAULT_MATCHPD_PARTITIONS=10])
912 if (test $DEFAULT_MATCHPD_PARTITIONS -lt 1); then
913 AC_MSG_ERROR(m4_normalize([
914 Invalid value $DEFAULT_MATCHPD_PARTITIONS for --with-matchpd-partitions. \
915 Cannot be negative.]))
918 AC_SUBST(DEFAULT_MATCHPD_PARTITIONS)
920 # Specify the number of splits of insn-emit.cc to generate.
921 AC_ARG_WITH(insnemit-partitions,
922 [AS_HELP_STRING([--with-insnemit-partitions=num],
923 [Set the number of partitions of insn-emit.cc for genemit to create. [default=10]])],
924 [DEFAULT_INSNEMIT_PARTITIONS="$with_insnemit_partitions"], [DEFAULT_INSNEMIT_PARTITIONS=10])
925 if (test $DEFAULT_INSNEMIT_PARTITIONS -lt 1); then
926 AC_MSG_ERROR(m4_normalize([
927 Invalid value $DEFAULT_INSNEMIT_PARTITIONS for --with-insnemit-partitions. \
928 Cannot be negative.]))
931 AC_SUBST(DEFAULT_INSNEMIT_PARTITIONS)
933 # Enable __cxa_atexit for C++.
934 AC_ARG_ENABLE(__cxa_atexit,
935 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
938 # Enable C extension for decimal float if target supports it.
939 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
941 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
942 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
943 [Define to 1 to enable decimal float extension to C.])
945 # Use default_decimal_float for dependency.
946 enable_decimal_float=$default_decimal_float
948 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
949 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
950 [Define to 1 to specify that we are using the BID decimal floating
951 point format instead of DPD])
953 # Enable C extension for fixed-point arithmetic.
954 AC_ARG_ENABLE(fixed-point,
955 [AS_HELP_STRING([--enable-fixed-point],
956 [enable fixed-point arithmetic extension to C])],
961 enable_fixed_point=yes
965 enable_fixed_point=yes
968 enable_fixed_point=yes
971 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
972 enable_fixed_point=no
976 AC_SUBST(enable_fixed_point)
978 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
979 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
980 [Define to 1 to enable fixed-point arithmetic extension to C.])
983 # Pass with no value to take the default
984 # Pass with a value to specify a thread package
985 AC_ARG_ENABLE(threads,
986 [AS_HELP_STRING([[--enable-threads[=LIB]]],
987 [enable thread usage for target GCC,
988 using LIB thread package])],,
992 [AS_HELP_STRING([--enable-tls],
993 [enable or disable generation of tls code
994 overriding the assembler check for tls support])],
998 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
999 Valid choices are 'yes' and 'no'.]) ;;
1003 AC_ARG_ENABLE(vtable-verify,
1004 [AS_HELP_STRING([--enable-vtable-verify],
1005 [enable vtable verification feature])],,
1006 [enable_vtable_verify=no])
1007 vtable_verify=`if test x$enable_vtable_verify = xyes; then echo 1; else echo 0; fi`
1008 AC_DEFINE_UNQUOTED(ENABLE_VTABLE_VERIFY, $vtable_verify,
1009 [Define 0/1 if vtable verification feature is enabled.])
1011 AC_ARG_ENABLE(analyzer,
1012 [AS_HELP_STRING([--disable-analyzer],
1013 [disable -fanalyzer static analyzer])],
1014 if test x$enable_analyzer = xno; then
1020 AC_DEFINE_UNQUOTED(ENABLE_ANALYZER, $analyzer,
1021 [Define 0/1 if static analyzer feature is enabled.])
1023 AC_ARG_ENABLE(objc-gc,
1024 [AS_HELP_STRING([--enable-objc-gc],
1025 [enable the use of Boehm's garbage collector with
1026 the GNU Objective-C runtime])],
1027 if test x$enable_objc_gc = xno; then
1035 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2 (or later)])],
1036 dwarf2="$with_dwarf2",
1039 AC_ARG_ENABLE(shared,
1040 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
1042 case $enable_shared in
1046 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
1047 for pkg in $enableval; do
1048 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
1055 ], [enable_shared=yes])
1056 AC_SUBST(enable_shared)
1059 [ --disable-gcov don't provide libgcov and related host tools],
1060 [], [case $target in
1069 AC_SUBST(enable_gcov)
1072 [AS_HELP_STRING([--with-specs=SPECS],
1073 [add SPECS to driver command-line processing])],
1074 [CONFIGURE_SPECS=$withval],
1077 AC_SUBST(CONFIGURE_SPECS)
1079 ACX_PKGVERSION([GCC])
1080 ACX_BUGURL([https://gcc.gnu.org/bugs/])
1082 # Allow overriding the default URL for documentation
1083 AC_ARG_WITH(documentation-root-url,
1084 AS_HELP_STRING([--with-documentation-root-url=URL],
1085 [Root for documentation URLs]),
1087 yes) AC_MSG_ERROR([documentation root URL not specified]) ;;
1088 no) AC_MSG_ERROR([documentation root URL not specified]) ;;
1089 */) DOCUMENTATION_ROOT_URL="$withval" ;;
1090 *) AC_MSG_ERROR([documentation root URL does not end with /]) ;;
1094 case "$gcc_version" in
1095 *.[123456].0) docroot_url_suffix="gcc-$gcc_version/";;
1096 *.[123456].1) docroot_url_suffix="gcc-`echo $gcc_version | sed 's/1$/0/'`/";;
1099 DOCUMENTATION_ROOT_URL="https://gcc.gnu.org/onlinedocs/$docroot_url_suffix"
1101 AC_DEFINE_UNQUOTED(DOCUMENTATION_ROOT_URL,"$DOCUMENTATION_ROOT_URL",
1102 [Define to the root for documentation URLs.])
1104 # Allow overriding the default URL for GCC changes
1105 AC_ARG_WITH(changes-root-url,
1106 AS_HELP_STRING([--with-changes-root-url=URL],
1107 [Root for GCC changes URLs]),
1109 yes) AC_MSG_ERROR([changes root URL not specified]) ;;
1110 no) AC_MSG_ERROR([changes root URL not specified]) ;;
1111 */) CHANGES_ROOT_URL="$withval" ;;
1112 *) AC_MSG_ERROR([changes root URL does not end with /]) ;;
1114 CHANGES_ROOT_URL="https://gcc.gnu.org/"
1116 AC_DEFINE_UNQUOTED(CHANGES_ROOT_URL,"$CHANGES_ROOT_URL",
1117 [Define to the root for URLs about GCC changes.])
1119 # Sanity check enable_languages in case someone does not run the toplevel
1120 # configure # script.
1121 AC_ARG_ENABLE(languages,
1122 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
1123 [case ,${enable_languages}, in
1125 # go safe -- we cannot be much sure without the toplevel
1127 # analysis of which target libs are present and usable
1131 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
1136 enable_languages=c,${enable_languages}
1139 [enable_languages=c])
1141 # If top-level libada has been disabled, then wire in install-gnatlib
1142 # invocation with `make install', so that one can build and install
1143 # the library manually with `make -C gcc all gnatlib gnattools install'.
1144 if test x"$enable_libada" = xno; then
1145 gnat_install_lib=gnat-install-lib
1149 AC_SUBST(gnat_install_lib)
1151 if test x"$enable_as_accelerator_for" != x; then
1152 AC_DEFINE(ACCEL_COMPILER, 1,
1153 [Define if this compiler should be built as the offload target compiler.])
1154 enable_as_accelerator=yes
1155 sedscript="s#${target_noncanonical}#${enable_as_accelerator_for}-accel-${target_noncanonical}#"
1156 program_transform_name=`echo $program_transform_name | sed $sedscript`
1157 accel_dir_suffix=/accel/${target_noncanonical}
1158 real_target_noncanonical=${enable_as_accelerator_for}
1160 AC_SUBST(enable_as_accelerator)
1161 AC_SUBST(real_target_noncanonical)
1162 AC_SUBST(accel_dir_suffix)
1164 for tgt in `echo $enable_offload_targets | sed 's/,/ /g'`; do
1165 tgt=`echo $tgt | sed 's/=.*//'`
1170 omp_device_property=omp-device-properties-gcn
1171 omp_device_property_tmake_file="${omp_device_property_tmake_file} \$(srcdir)/config/gcn/t-omp-device"
1174 omp_device_property=omp-device-properties-nvptx
1175 omp_device_property_tmake_file="${omp_device_property_tmake_file} \$(srcdir)/config/nvptx/t-omp-device"
1178 AC_MSG_ERROR([unknown offload target specified])
1181 omp_device_properties="${omp_device_properties} ${tgt}=${omp_device_property}"
1182 omp_device_property_deps="${omp_device_property_deps} ${omp_device_property}"
1184 if test x"$offload_targets" = x; then
1185 offload_targets=$tgt
1187 offload_targets="$offload_targets,$tgt"
1190 AC_SUBST(omp_device_properties)
1191 AC_SUBST(omp_device_property_deps)
1193 AC_DEFINE_UNQUOTED(OFFLOAD_TARGETS, "$offload_targets",
1194 [Define to offload targets, separated by commas.])
1195 if test x"$enable_offloading" != x; then
1196 AC_DEFINE(ENABLE_OFFLOADING, 1,
1197 [Define this to enable support for offloading.])
1199 AC_DEFINE(ENABLE_OFFLOADING, 0,
1200 [Define this to enable support for offloading.])
1203 if test "x$enable_offload_defaulted" = xyes; then
1204 AC_DEFINE(OFFLOAD_DEFAULTED, 1,
1205 [Define to 1 to if -foffload is defaulted])
1208 AC_ARG_WITH(multilib-list,
1209 [AS_HELP_STRING([--with-multilib-list], [select multilibs (AArch64, ARM, AVR, OR1K, RISC-V, SH and x86-64 only)])],
1211 with_multilib_list=default)
1213 AC_ARG_WITH(multilib-generator,
1214 [AS_HELP_STRING([--with-multilib-generator], [Multi-libs configuration string (RISC-V only)])],
1216 with_multilib_generator=default)
1218 # -------------------------
1219 # Checks for other programs
1220 # -------------------------
1224 # Find some useful tools
1226 # We need awk to create options.cc and options.h.
1227 # Bail out if it's missing.
1229 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
1236 AC_SUBST(ranlib_flags)
1240 # See if cmp has --ignore-initial.
1241 gcc_AC_PROG_CMP_IGNORE_INITIAL
1243 # See if we have the mktemp command.
1244 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
1246 # See if makeinfo has been installed and is modern enough
1247 # that we can use it.
1248 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
1249 [GNU texinfo.* \([0-9][0-9.]*\)],
1250 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
1251 if test $gcc_cv_prog_makeinfo_modern = no; then
1253 *** Makeinfo is missing or too old.
1254 *** Info documentation will not be built.])
1259 AC_SUBST(BUILD_INFO)
1261 # Determine whether makeinfo supports the CONTENTS_OUTPUT_LOCATION variable.
1262 # If it does, we want to pass it to makeinfo in order to restore the old
1263 # behavior of @{summary,}contents placement.
1264 MAKEINFO_TOC_INLINE_FLAG=
1265 AS_IF([test x"$MAKEINFO" != x], [
1266 AC_CACHE_CHECK([for CONTENTS_OUTPUT_LOCATION support in $MAKEINFO],
1267 [gcc_cv_texi_add_toc_inline_flags], [
1268 # Detect the unknown variable CONTENTS_OUTPUT_LOCATION warning
1269 if "$MAKEINFO" -c CONTENTS_OUTPUT_LOCATION=inline </dev/null 2>&1 \
1270 | grep CONTENTS_OUTPUT_LOCATION >/dev/null; then
1271 gcc_cv_texi_add_toc_inline_flags=no
1273 gcc_cv_texi_add_toc_inline_flags=yes
1276 if test x"$gcc_cv_texi_add_toc_inline_flags" = xyes; then
1277 MAKEINFO_TOC_INLINE_FLAG='-c CONTENTS_OUTPUT_LOCATION=inline'
1280 AC_SUBST([MAKEINFO_TOC_INLINE_FLAG])
1282 # Is pod2man recent enough to regenerate manpages?
1283 AC_MSG_CHECKING([for recent Pod::Man])
1284 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
1286 GENERATED_MANPAGES=generated-manpages
1291 AC_SUBST(GENERATED_MANPAGES)
1293 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
1296 dnl Don't use AC_PROG_LEX; we insist on flex.
1297 dnl LEXLIB is not useful in gcc.
1298 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
1301 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
1304 ACX_CHECK_PROG_VER(PYTHON, python3, --version,
1305 [Python.* \([0-9][0-9.]*\)],
1306 [3.[4-9]*|3.[1-9][0-9]*|[4-9].*|[1-9][0-9]*])
1307 if test $gcc_cv_prog_python3_modern = no; then
1309 *** Python3 is missing.
1310 *** Documentation for modula-2 will not include the target SYSTEM module.])
1315 AC_SUBST(HAVE_PYTHON)
1317 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
1318 # check for build == host before using them.
1321 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
1322 && test -d ../binutils ; then
1323 NM='${objdir}/../binutils/nm-new'
1325 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
1329 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
1330 && test -d ../binutils ; then
1331 AR='${objdir}/../binutils/ar'
1333 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
1336 # The jit documentation looks better if built with sphinx, but can be
1337 # built with texinfo if sphinx is not available.
1338 # Set "doc_build_sys" to "sphinx" or "texinfo" accordingly.
1339 AC_CHECK_PROG(doc_build_sys, sphinx-build, sphinx, texinfo)
1341 # --------------------
1342 # Checks for C headers
1343 # --------------------
1345 # Need to reject headers which give warnings, so that the -Werror bootstrap
1346 # works later. *sigh* This needs to come before all header checks.
1353 AC_HEADER_TIOCGWINSZ
1354 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
1355 fcntl.h ftw.h unistd.h sys/auxv.h sys/file.h sys/time.h sys/mman.h \
1356 sys/resource.h sys/param.h sys/times.h sys/stat.h sys/locking.h \
1357 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
1359 # Check for thread headers.
1360 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
1361 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
1363 # These tests can't be done till we know if we have limits.h.
1367 # ----------------------
1368 # Checks for C++ headers
1369 # ----------------------
1371 dnl Autoconf will give an error in the configure script if there is no
1372 dnl C++ preprocessor. Hack to prevent that.
1373 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
1375 m4_popdef([AC_MSG_ERROR])[]dnl
1377 AC_CHECK_HEADERS(unordered_map)
1378 AC_CHECK_HEADERS(tr1/unordered_map)
1379 AC_CHECK_HEADERS(ext/hash_map)
1382 # Dependency checking.
1386 AC_CONFIG_COMMANDS([gccdepdir],[
1387 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR
1388 for lang in $subdirs c-family common analyzer text-art rtl-ssa
1390 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs $lang/$DEPDIR
1391 done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR])
1393 ZW_PROG_COMPILER_DEPENDENCIES([CXX])
1400 # These libraries may be used by collect2.
1401 # We may need a special search path to get them linked.
1402 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
1404 for libs in '' -lld -lmld \
1405 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
1406 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1409 AC_TRY_LINK_FUNC(ldopen,
1410 [gcc_cv_collect2_libs="$libs"; break])
1413 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1414 case $gcc_cv_collect2_libs in
1416 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1418 AC_SUBST(COLLECT2_LIBS)
1420 # When building Ada code on Alpha, we need exc_resume which is usually in
1421 # -lexc. So test for it.
1424 AC_SEARCH_LIBS(exc_resume, exc)
1427 AC_SUBST(GNAT_LIBEXC)
1429 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1432 AC_SEARCH_LIBS(kstat_open, kstat)
1433 EXTRA_GCC_LIBS="$LIBS"
1435 AC_SUBST(EXTRA_GCC_LIBS)
1437 # Some systems put ldexp and frexp in libm instead of libc; assume
1438 # they're both in the same place. jcf-dump needs them.
1441 AC_SEARCH_LIBS(ldexp, m)
1446 # Some systems need dlopen
1449 AC_SEARCH_LIBS(dlopen, dl)
1454 # Use <inttypes.h> only if it exists,
1455 # doesn't clash with <sys/types.h>, declares intmax_t and defines
1457 AC_MSG_CHECKING(for inttypes.h)
1458 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1459 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1460 [[#define __STDC_FORMAT_MACROS
1461 #include <sys/types.h>
1462 #include <inttypes.h>]],
1467 [gcc_cv_header_inttypes_h=yes],
1468 [gcc_cv_header_inttypes_h=no])])
1469 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1470 if test $gcc_cv_header_inttypes_h = yes; then
1471 AC_DEFINE(HAVE_INTTYPES_H, 1,
1472 [Define if you have a working <inttypes.h> header file.])
1475 # Look for the ZSTD package.
1478 AC_SUBST(ZSTD_INCLUDE)
1482 AC_SUBST(ZSTD_CPPFLAGS)
1483 AC_SUBST(ZSTD_LDFLAGS)
1485 [AS_HELP_STRING([--with-zstd=PATH],
1486 [specify prefix directory for installed zstd library.
1487 Equivalent to --with-zstd-include=PATH/include
1488 plus --with-zstd-lib=PATH/lib])])
1489 AC_ARG_WITH(zstd-include,
1490 [AS_HELP_STRING([--with-zstd-include=PATH],
1491 [specify directory for installed zstd include files])])
1492 AC_ARG_WITH(zstd-lib,
1493 [AS_HELP_STRING([--with-zstd-lib=PATH],
1494 [specify directory for the installed zstd library])])
1495 case "x$with_zstd" in
1501 *) ZSTD_INCLUDE=$with_zstd/include
1502 ZSTD_LIB=$with_zstd/lib
1506 if test "x$with_zstd" != xno; then
1507 if test "x$with_zstd_include" != x; then
1508 ZSTD_INCLUDE=$with_zstd_include
1510 if test "x$with_zstd_lib" != x; then
1511 ZSTD_LIB=$with_zstd_lib
1513 if test "x$ZSTD_INCLUDE" != x \
1514 && test "x$ZSTD_INCLUDE" != xno; then
1515 ZSTD_CPPFLAGS=-I$ZSTD_INCLUDE
1517 if test "x$ZSTD_LIB" != x \
1518 && test "x$ZSTD_LIB" != xno; then
1519 ZSTD_LDFLAGS=-L$ZSTD_LIB
1522 CXXFLAGS="$CXXFLAGS $ZSTD_CPPFLAGS"
1523 LDFLAGS="$LDFLAGS $ZSTD_LDFLAGS"
1525 # LTO can use zstd compression algorithm
1528 AC_SEARCH_LIBS(ZSTD_compress, zstd,, gcc_cv_header_zstd_h=no)
1533 AC_MSG_CHECKING(for zstd.h)
1534 AC_CACHE_VAL(gcc_cv_header_zstd_h,
1535 # We require version 1.3.0 or later. This is the first version that has
1536 # ZSTD_getFrameContentSize.
1537 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1539 #if ZSTD_VERSION_NUMBER < 10300
1540 #error "need zstd 1.3.0 or better"
1542 [gcc_cv_header_zstd_h=yes],
1543 [gcc_cv_header_zstd_h=no])])
1544 AC_MSG_RESULT($gcc_cv_header_zstd_h)
1545 if test $gcc_cv_header_zstd_h = yes; then
1546 AC_DEFINE(HAVE_ZSTD_H, 1,
1547 [Define if you have a working <zstd.h> header file.])
1548 elif test "x$with_zstd" != x; then
1549 as_fn_error $? "Unable to find zstd.h. See config.log for details." "$LINENO" 5
1553 dnl Disabled until we have a complete test for buggy enum bitfields.
1554 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1556 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1557 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1558 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1559 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1560 putchar_unlocked putc_unlocked)
1561 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoq \
1562 popen sysconf strsignal getrusage nl_langinfo \
1563 gettimeofday mbstowcs wcswidth mmap posix_fallocate setlocale \
1564 gcc_UNLOCKED_FUNCS madvise mallinfo mallinfo2 fstatat getauxval)
1566 if test x$ac_cv_func_mbstowcs = xyes; then
1567 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1568 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1574 [gcc_cv_func_mbstowcs_works=yes],
1575 [gcc_cv_func_mbstowcs_works=no],
1576 [gcc_cv_func_mbstowcs_works=yes])])
1577 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1578 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1579 [Define this macro if mbstowcs does not crash when its
1580 first argument is NULL.])
1584 AC_CHECK_TYPE(ssize_t, int)
1585 AC_CHECK_TYPE(caddr_t, char *)
1586 AC_CHECK_TYPE(sighander_t,
1587 AC_DEFINE(HAVE_SIGHANDLER_T, 1,
1588 [Define if <sys/signal.h> defines sighandler_t]),
1591 GCC_AC_FUNC_MMAP_BLACKLIST
1595 # Under VMS, vfork works very differently than on Unix. The standard test
1596 # won't work, and it isn't easily adaptable. It makes more sense to
1598 ac_cv_func_vfork_works=yes
1605 # Until we have in-tree GNU iconv:
1607 if test -f "$LTLIBICONV"; then
1608 LIBICONV_DEP=$LTLIBICONV
1610 AC_SUBST(LIBICONV_DEP)
1616 # We will need to find libiberty.h and ansidecl.h
1617 saved_CFLAGS="$CFLAGS"
1618 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1619 saved_CXXFLAGS="$CXXFLAGS"
1620 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1622 # gcc_AC_CHECK_DECLS doesn't support overloaded functions, so use the
1623 # normal autoconf function for these. But force definition of
1624 # HAVE_DECL_BASENAME like gcc_AC_CHECK_DECLS does, to suppress the bizarre
1625 # basename handling in libiberty.h.
1626 AC_CHECK_DECLS([basename(const char*), strstr(const char*,const char*)], , ,[
1627 #undef HAVE_DECL_BASENAME
1628 #define HAVE_DECL_BASENAME 1
1629 #include "ansidecl.h"
1630 #include "system.h"])
1632 gcc_AC_CHECK_DECLS(getenv atol atoll asprintf sbrk abort atof getcwd getwd \
1633 madvise stpcpy strnlen strsignal strverscmp \
1634 strtol strtoul strtoll strtoull setenv unsetenv \
1635 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1636 free getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1637 #include "ansidecl.h"
1638 #include "system.h"])
1640 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1641 #include "ansidecl.h"
1643 #ifdef HAVE_SYS_RESOURCE_H
1644 #include <sys/resource.h>
1648 gcc_AC_CHECK_DECLS(mallinfo mallinfo2, , ,[
1649 #include "ansidecl.h"
1651 #ifdef HAVE_MALLOC_H
1656 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1657 #include "ansidecl.h"
1659 #ifdef HAVE_SYS_RESOURCE_H
1660 #include <sys/resource.h>
1662 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1663 [Define to `long' if <sys/resource.h> doesn't define.])])
1665 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1666 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1667 # in collect2.cc, <fcntl.h> isn't visible, but the configure test below needs
1668 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1669 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1670 #include "ansidecl.h"
1679 gcc_AC_CHECK_DECLS(times, , ,[
1680 #include "ansidecl.h"
1682 #ifdef HAVE_SYS_TIMES_H
1683 #include <sys/times.h>
1687 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1688 #include "ansidecl.h"
1693 # More time-related stuff.
1694 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1695 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1696 #include "ansidecl.h"
1698 #ifdef HAVE_SYS_TIMES_H
1699 #include <sys/times.h>
1701 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1702 if test $ac_cv_struct_tms = yes; then
1703 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1704 [Define if <sys/times.h> defines struct tms.])
1707 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1708 # revisit after autoconf 2.50.
1709 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1710 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1711 #include "ansidecl.h"
1713 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1714 if test $gcc_cv_type_clock_t = yes; then
1715 AC_DEFINE(HAVE_CLOCK_T, 1,
1716 [Define if <time.h> defines clock_t.])
1719 # Check if F_SETLKW is supported by fcntl.
1720 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1721 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1722 #include <fcntl.h>]], [[
1728 return fcntl (1, F_SETLKW, &fl);]])],
1729 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1730 if test $ac_cv_f_setlkw = yes; then
1731 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1732 [Define if F_SETLKW supported by fcntl.])
1735 # Check if O_CLOEXEC is defined by fcntl
1736 AC_CACHE_CHECK(for O_CLOEXEC, ac_cv_o_cloexec, [
1737 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1738 #include <fcntl.h>]], [[
1739 return open ("/dev/null", O_RDONLY | O_CLOEXEC);]])],
1740 [ac_cv_o_cloexec=yes],[ac_cv_o_cloexec=no])])
1741 if test $ac_cv_o_cloexec = yes; then
1742 AC_DEFINE(HOST_HAS_O_CLOEXEC, 1,
1743 [Define if O_CLOEXEC supported by fcntl.])
1746 # Check if O_NONBLOCK is defined by fcntl
1747 AC_CHECK_HEADERS([fcntl.h])
1748 AC_CHECK_DECL(O_NONBLOCK,,,[#include <fcntl.h>])
1749 if test $ac_cv_have_decl_O_NONBLOCK = yes; then
1750 AC_DEFINE(HOST_HAS_O_NONBLOCK, 1,
1751 [Define if O_NONBLOCK supported by fcntl.])
1755 # C++ Modules would like some networking features to provide the mapping
1756 # server. You can still use modules without them though.
1757 # The following network-related checks could probably do with some
1758 # Windows and other non-linux defenses and checking.
1760 # Local socket connectivity wants AF_UNIX networking
1761 # Check for AF_UNIX networking
1762 AC_CACHE_CHECK(for AF_UNIX, ac_cv_af_unix, [
1763 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1764 #include <sys/types.h>
1765 #include <sys/socket.h>
1767 #include <netinet/in.h>]],[[
1769 un.sun_family = AF_UNSPEC;
1770 int fd = socket (AF_UNIX, SOCK_STREAM, 0);
1771 connect (fd, (sockaddr *)&un, sizeof (un));]])],
1772 [ac_cv_af_unix=yes],
1773 [ac_cv_af_unix=no])])
1774 if test $ac_cv_af_unix = yes; then
1775 AC_DEFINE(HAVE_AF_UNIX, 1,
1776 [Define if AF_UNIX supported.])
1779 # Remote socket connectivity wants AF_INET6 networking
1780 # Check for AF_INET6 networking
1781 AC_CACHE_CHECK(for AF_INET6, ac_cv_af_inet6, [
1782 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1783 #include <sys/types.h>
1784 #include <sys/socket.h>
1785 #include <netinet/in.h>
1786 #include <netdb.h>]],[[
1788 in6.sin6_family = AF_UNSPEC;
1789 struct addrinfo *addrs = 0;
1790 struct addrinfo hints;
1792 hints.ai_family = AF_INET6;
1793 hints.ai_socktype = SOCK_STREAM;
1794 hints.ai_protocol = 0;
1795 hints.ai_canonname = 0;
1798 int e = getaddrinfo ("localhost", 0, &hints, &addrs);
1799 const char *str = gai_strerror (e);
1800 freeaddrinfo (addrs);
1801 int fd = socket (AF_INET6, SOCK_STREAM, 0);
1802 connect (fd, (sockaddr *)&in6, sizeof (in6));]])],
1803 [ac_cv_af_inet6=yes],
1804 [ac_cv_af_inet6=no])])
1805 if test $ac_cv_af_inet6 = yes; then
1806 AC_DEFINE(HAVE_AF_INET6, 1,
1807 [Define if AF_INET6 supported.])
1810 # Check if _LK_LOCK is supported by _locking
1811 AC_CACHE_CHECK(for _LK_LOCK, ac_cv_lk_lock, [
1812 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1814 #include <sys/locking.h>]], [[
1816 return _locking (fd, _LK_LOCK, 0);]])],
1817 [ac_cv_lk_lock=yes],[ac_cv_lk_lock=no])])
1818 if test $ac_cv_lk_lock = yes; then
1819 AC_DEFINE(HOST_HAS_LK_LOCK, 1,
1820 [Define if _LK_LOC supported by _locking.])
1823 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1824 CFLAGS="$saved_CFLAGS"
1825 CXXFLAGS="$saved_CXXFLAGS"
1827 # mkdir takes a single argument on some systems.
1828 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1836 # With Setjmp/Longjmp based exception handling.
1837 AC_ARG_ENABLE(sjlj-exceptions,
1838 [AS_HELP_STRING([--enable-sjlj-exceptions],
1839 [arrange to use setjmp/longjmp exception handling])],
1840 [force_sjlj_exceptions=yes],
1843 force_sjlj_exceptions=yes
1847 force_sjlj_exceptions=no
1850 if test $force_sjlj_exceptions = yes; then
1851 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1852 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1853 [Define 0/1 to force the choice for exception handling model.])
1856 # Windows32 UTF-8 manifest support for running the driver and compiler
1857 # executables with the UTF-8 active code page on mingw hosts.
1858 # Non-mingw hosts ignore this option.
1859 # The shell variables this sets are picked up from the mingw branches
1860 # of config.host so they have to be set before it gets sourced.
1861 AC_ARG_ENABLE(win32-utf8-manifest,
1862 [AS_HELP_STRING([--disable-win32-utf8-manifest],
1863 [disable embedding a utf8 manifest on mingw hosts])
1864 AS_HELP_STRING([--enable-win32-utf8-manifest],
1865 [enable embedding a utf8 manifest on mingw hosts (default)])],,)
1867 if test "x$enable_win32_utf8_manifest" != xno; then
1868 host_xmake_mingw=i386/x-mingw32-utf8
1869 host_extra_gcc_objs_mingw=utf8rc-mingw32.o
1870 host_extra_objs_mingw=utf8-mingw32.o
1873 # --------------------------------------------------------
1874 # Build, host, and target specific configuration fragments
1875 # --------------------------------------------------------
1877 # Collect build-machine-specific information.
1878 . ${srcdir}/config.build || exit 1
1880 # Collect host-machine-specific information.
1881 . ${srcdir}/config.host || exit 1
1885 # Collect target-machine-specific information.
1886 . ${srcdir}/config.gcc || exit 1
1888 extra_objs="${host_extra_objs} ${extra_objs}"
1889 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1891 # Default the target-machine variables that were not explicitly set.
1892 if test x"$tm_file" = x
1893 then tm_file=$cpu_type/$cpu_type.h; fi
1895 if test x"$extra_headers" = x
1896 then extra_headers=; fi
1898 if test x$md_file = x
1899 then md_file=$cpu_type/$cpu_type.md; fi
1901 if test x$out_file = x
1902 then out_file=$cpu_type/$cpu_type.cc; fi
1904 if test x"$tmake_file" = x
1905 then tmake_file=$cpu_type/t-$cpu_type
1908 # Support --enable-initfini-array.
1909 if test x$enable_initfini_array != xno; then
1910 tm_file="${tm_file} initfini-array.h"
1913 if test x"$dwarf2" = xyes
1914 then tm_file="$tm_file tm-dwarf2.h"
1917 # Say what files are being used for the output code and MD file.
1918 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1919 echo "Using \`$srcdir/config/$md_file' as machine description file."
1921 # If any of the xm_file variables contain nonexistent files, warn
1922 # about them and drop them.
1925 for x in $build_xm_file; do
1926 if test -f $srcdir/config/$x
1928 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1934 for x in $host_xm_file; do
1935 if test -f $srcdir/config/$x
1937 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1943 for x in $xm_file; do
1944 if test -f $srcdir/config/$x
1946 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1952 for f in $tm_file; do
1955 if test $count = ax; then
1956 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1958 echo "Using the following target machine macro files:"
1959 for f in $tm_file; do
1960 echo " $srcdir/config/$f"
1964 if test x$use_long_long_for_widest_fast_int = xyes; then
1965 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1966 [Define to 1 if the 'long long' type is wider than 'long' but still
1967 efficiently supported by the host hardware.])
1970 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1971 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1973 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1974 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1977 for f in $host_xm_file; do
1980 if test $count = a; then
1982 elif test $count = ax; then
1983 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1985 echo "Using the following host machine macro files:"
1986 for f in $host_xm_file; do
1987 echo " $srcdir/config/$f"
1990 echo "Using ${out_host_hook_obj} for host machine hooks."
1992 if test "$host_xm_file" != "$build_xm_file"; then
1994 for f in $build_xm_file; do
1997 if test $count = a; then
1999 elif test $count = ax; then
2000 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
2002 echo "Using the following build machine macro files:"
2003 for f in $build_xm_file; do
2004 echo " $srcdir/config/$f"
2009 if test -n "$configured_native_system_header_dir"; then
2010 native_system_header_dir=$configured_native_system_header_dir
2012 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
2013 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
2017 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
2018 gcc_cv_mcontext_underscores,
2019 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
2020 #include <sys/cdefs.h>
2021 #include <sys/signal.h>
2022 #include <ucontext.h>
2023 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
2025 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
2026 if test $gcc_cv_mcontext_underscores = yes; then
2027 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
2028 [mcontext_t fields start with __])
2037 # Check if a valid thread package
2038 case ${enable_threads} in
2041 target_thread_file='single'
2045 target_thread_file='single'
2047 aix | dce | lynx | mipssde | posix | rtems | \
2048 single | tpf | vxworks | win32 | mcf)
2049 target_thread_file=${enable_threads}
2052 echo "${enable_threads} is an unknown thread package" 1>&2
2057 if test x${thread_file} = x; then
2058 # No thread file set by target-specific clauses in config.gcc,
2059 # so use file chosen by default logic above
2060 thread_file=${target_thread_file}
2068 if test x$enable___cxa_atexit = xyes || \
2069 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
2070 if test x$host = x$target; then
2072 # mingw32 doesn't have __cxa_atexit but uses atexit registration
2073 # keyed to flag_use_cxa_atexit
2081 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
2082 [echo "__cxa_atexit can't be enabled on this target"])
2086 # We can't check for __cxa_atexit when building a cross, so assume
2090 if test x$use_cxa_atexit = xyes; then
2091 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
2092 [Define if you want to use __cxa_atexit, rather than atexit, to
2093 register C++ destructors for local statics and global objects.
2094 This is essential for fully standards-compliant handling of
2095 destructors, but requires __cxa_atexit in libc.])
2099 # Look for a file containing extra machine modes.
2100 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
2101 extra_modes_file='$(srcdir)'/config/${extra_modes}
2102 AC_SUBST(extra_modes_file)
2103 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
2104 [Define to the name of a file containing a list of extra machine modes
2105 for this architecture.])
2108 # Convert extra_options into a form suitable for Makefile use.
2111 for f in $extra_options; do
2112 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
2113 all_opt_files="$all_opt_files $srcdir/config/$f"
2115 AC_SUBST(extra_opt_files)
2117 # auto-host.h is the file containing items generated by autoconf and is
2118 # the first file included by config.h.
2119 # If host=build, it is correct to have bconfig include auto-host.h
2120 # as well. If host!=build, we are in error and need to do more
2121 # work to find out the build config parameters.
2122 if test x$host = x$build
2124 build_auto=auto-host.h
2125 HAVE_AUTO_BUILD='# '
2127 # We create a subdir, then run autoconf in the subdir.
2128 # To prevent recursion we set host and build for the new
2129 # invocation of configure to the build for this invocation
2136 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
2137 *) realsrcdir=../${srcdir};;
2139 # Clearing GMPINC is necessary to prevent host headers being
2140 # used by the build compiler. Defining GENERATOR_FILE stops
2141 # system.h from including gmp.h.
2142 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
2143 CXX="${CXX_FOR_BUILD}" CXXFLAGS="${CXXFLAGS_FOR_BUILD}" \
2144 LD="${LD_FOR_BUILD}" LDFLAGS="${LDFLAGS_FOR_BUILD}" \
2145 GMPINC="" CPPFLAGS="${CPPFLAGS_FOR_BUILD} -DGENERATOR_FILE" \
2146 ${realsrcdir}/configure \
2147 --enable-languages=${enable_languages-all} \
2148 ${enable_obsolete+--enable-obsolete="$enable_obsolete"} \
2149 ${enable_option_checking+--enable-option-checking="$enable_option_checking"} \
2150 --target=$target_alias --host=$build_alias \
2151 --build=$build_alias || exit # retaining $tempdir
2153 # We just finished tests for the build machine, so rename
2154 # the file auto-build.h in the gcc directory.
2155 mv auto-host.h ../auto-build.h
2158 build_auto=auto-build.h
2161 AC_SUBST(build_subdir)
2162 AC_SUBST(HAVE_AUTO_BUILD)
2164 tm_file="${tm_file} defaults.h"
2165 tm_p_file="${tm_p_file} tm-preds.h"
2166 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
2167 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
2168 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
2169 # put this back in temporarily.
2170 xm_file="auto-host.h ansidecl.h ${xm_file}"
2177 # Compile in configure arguments.
2178 if test -f configargs.h ; then
2179 # Being re-configured.
2180 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
2181 gcc_reconf_arguments=`echo "$gcc_config_arguments" | sed -e 's/^.*\( : (reconfigured) .*$\)/\1/'`
2182 if [ "$gcc_reconf_arguments" != " : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS" ]; then
2183 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
2186 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
2189 # Double all backslashes and backslash all quotes to turn
2190 # gcc_config_arguments into a C string.
2191 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
2192 $gcc_config_arguments
2194 gcc_config_arguments_str=`cat conftest.out`
2197 cat > configargs.h <<EOF
2198 /* Generated automatically. */
2199 static const char configuration_arguments[] = "$gcc_config_arguments_str";
2200 static const char thread_model[] = "$thread_file";
2202 static const struct {
2203 const char *name, *value;
2204 } configure_default_options[] = $configure_default_options;
2209 gcc_BASEVER=`cat $srcdir/BASE-VER`
2210 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
2211 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
2212 if test -f $srcdir/REVISION ; then
2213 gcc_REVISION=`cat $srcdir/REVISION`
2217 cat > plugin-version.h <<EOF
2218 #include "configargs.h"
2220 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
2221 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
2222 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
2223 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
2225 static char basever[] = "$gcc_BASEVER";
2226 static char datestamp[] = "$gcc_DATESTAMP";
2227 static char devphase[] = "$gcc_DEVPHASE";
2228 static char revision[] = "$gcc_REVISION";
2230 /* FIXME plugins: We should make the version information more precise.
2231 One way to do is to add a checksum. */
2233 static struct plugin_gcc_version gcc_version = {basever, datestamp,
2235 configuration_arguments};
2239 # Determine what GCC version number to use in filesystem paths.
2242 # Internationalization
2243 ZW_GNU_GETTEXT_SISTER_DIR
2245 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
2246 # -liconv on the link line twice.
2247 case "$LIBINTL" in *$LIBICONV*)
2251 AC_ARG_ENABLE(secureplt,
2252 [AS_HELP_STRING([--enable-secureplt],
2253 [enable -msecure-plt by default for PowerPC])],
2256 AC_ARG_ENABLE(mingw-wildcard,
2257 [AS_HELP_STRING([--enable-mingw-wildcard],
2258 [Set whether to expand wildcard on command-line.
2259 Default to platform configuration])],
2260 [],[enable_mingw_wildcard=platform])
2261 AS_IF([test x"$enable_mingw_wildcard" != xplatform ],
2262 [AC_DEFINE_UNQUOTED(MINGW_DOWILDCARD,
2263 $(test x"$enable_mingw_wildcard" = xno; echo $?),
2264 [Value to set mingw's _dowildcard to.])])
2266 AC_ARG_ENABLE(large-address-aware,
2267 [AS_HELP_STRING([--enable-large-address-aware],
2268 [Link mingw executables with --large-address-aware])])
2269 AS_IF([test x"$enable_large_address_aware" = xyes],
2270 [AC_DEFINE([MINGW_DEFAULT_LARGE_ADDR_AWARE], 1,
2271 [Define if we should link mingw executables with --large-address-aware])])
2273 AC_ARG_ENABLE(leading-mingw64-underscores,
2274 AS_HELP_STRING([--enable-leading-mingw64-underscores],
2275 [enable leading underscores on 64 bit mingw targets]),
2277 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
2278 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
2279 [Define if we should use leading underscore on 64 bit mingw targets])])
2282 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
2285 AC_ARG_ENABLE(frame-pointer,
2286 [AS_HELP_STRING([--enable-frame-pointer],
2287 [enable -fno-omit-frame-pointer by default for x86])], [],
2290 linux* | gnu* | darwin[[8912]]* | cygwin* | mingw*)
2291 # Enable -fomit-frame-pointer by default for these systems with DWARF2.
2292 enable_frame_pointer=no
2295 enable_frame_pointer=yes
2301 i[[34567]]86-*-* | x86_64-*-*)
2302 if test "x$enable_cld" = xyes; then
2303 tm_defines="${tm_defines} USE_IX86_CLD=1"
2305 if test "x$enable_frame_pointer" = xyes; then
2306 tm_defines="${tm_defines} USE_IX86_FRAME_POINTER=1"
2311 # Windows32 Registry support for specifying GCC installation paths.
2312 AC_ARG_ENABLE(win32-registry,
2313 [AS_HELP_STRING([--disable-win32-registry],
2314 [disable lookup of installation paths in the
2315 Registry on Windows hosts])
2316 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
2317 AS_HELP_STRING([--enable-win32-registry=KEY],
2318 [use KEY instead of GCC version as the last portion
2319 of the registry key])],,)
2322 win32 | pe | cygwin* | mingw32*)
2323 if test "x$enable_win32_registry" != xno; then
2324 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
2327 if test "x$enable_win32_registry" != xno; then
2328 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
2329 [Define to 1 if installation paths should be looked up in the Windows
2330 Registry. Ignored on non-Windows hosts.])
2332 if test "x$enable_win32_registry" != xyes \
2333 && test "x$enable_win32_registry" != x; then
2334 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
2335 [Define to be the last component of the Windows registry key under which
2336 to look for installation paths. The full key used will be
2337 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
2338 The default is the GCC version number.])
2344 # Get an absolute path to the GCC top-level source directory
2345 holddir=`${PWDCMD-pwd}`
2347 topdir=`${PWDCMD-pwd}`
2350 # Conditionalize the makefile for this host machine.
2352 for f in ${host_xmake_file}
2354 if test -f ${srcdir}/config/$f
2356 xmake_file="${xmake_file} \$(srcdir)/config/$f"
2360 # Conditionalize the makefile for this target machine.
2362 for f in ${tmake_file}
2364 if test -f ${srcdir}/config/$f
2366 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
2369 tmake_file="${tmake_file_}${omp_device_property_tmake_file}"
2371 out_object_file=`basename $out_file .cc`.o
2372 common_out_object_file=`basename $common_out_file .cc`.o
2374 tm_file_list="options.h"
2375 tm_include_list="options.h insn-constants.h"
2376 for f in $tm_file; do
2379 f=`echo $f | sed 's/^..//'`
2380 tm_file_list="${tm_file_list} $f"
2381 tm_include_list="${tm_include_list} $f"
2384 tm_file_list="${tm_file_list} \$(srcdir)/$f"
2385 tm_include_list="${tm_include_list} $f"
2388 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
2389 tm_include_list="${tm_include_list} config/$f"
2396 for f in $tm_p_file; do
2399 tm_p_file_list="${tm_p_file_list} $f"
2400 tm_p_include_list="${tm_p_include_list} $f"
2403 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
2404 tm_p_include_list="${tm_p_include_list} config/$f"
2410 for f in $tm_d_file; do
2413 tm_d_file_list="${tm_d_file_list} \$(srcdir)/config/$f"
2414 tm_d_include_list="${tm_d_include_list} config/$f"
2420 tm_rust_include_list=
2421 for f in $tm_rust_file; do
2424 tm_rust_file_list="${tm_rust_file_list} \$(srcdir)/config/$f"
2425 tm_rust_include_list="${tm_rust_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 AM_CONDITIONAL([ENABLE_DARWIN_AT_RPATH], [test x$enable_darwin_at_rpath = xyes])
2625 DARWIN_DO_EXTRA_RPATH=0
2626 AC_ARG_WITH(darwin-extra-rpath,
2628 [[--with-darwin-extra-rpath=[ARG]]],
2629 [Specify a runpath directory, additional to those provided by the compiler])],
2630 [if test x"$withval" != x; then
2631 DARWIN_ADD_RPATH="$withval"
2632 DARWIN_DO_EXTRA_RPATH=1
2634 AC_DEFINE_UNQUOTED(DARWIN_DO_EXTRA_RPATH, $DARWIN_DO_EXTRA_RPATH,
2635 [Should add an extra runpath directory])
2636 AC_DEFINE_UNQUOTED(DARWIN_ADD_RPATH, "$DARWIN_ADD_RPATH",
2637 [Specify a runpath directory, additional to those provided by the compiler])
2639 # Identify the assembler which will work hand-in-glove with the newly
2640 # built GCC, so that we can examine its features. This is the assembler
2641 # which will be driven by the driver program.
2643 # If build != host, and we aren't building gas in-tree, we identify a
2644 # build->target assembler and hope that it will have the same features
2645 # as the host->target assembler we'll be using.
2646 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
2648 m4_pattern_allow([AS_FOR_TARGET])dnl
2649 AS_VAR_SET_IF(gcc_cv_as,, [
2650 if test -x "$DEFAULT_ASSEMBLER"; then
2651 gcc_cv_as="$DEFAULT_ASSEMBLER"
2652 elif test -f $gcc_cv_as_gas_srcdir/configure.ac \
2653 && test -f ../gas/Makefile \
2654 && test x$build = x$host; then
2655 gcc_cv_as=../gas/as-new$build_exeext
2656 elif test -x as$build_exeext; then
2657 # Build using assembler in the current directory.
2658 gcc_cv_as=./as$build_exeext
2659 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
2660 gcc_cv_as="$AS_FOR_TARGET"
2662 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
2665 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
2666 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
2667 case "$ORIGINAL_AS_FOR_TARGET" in
2668 ./as | ./as$build_exeext) ;;
2669 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2674 [[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]],
2675 [case "${enableval}" in
2681 install_gold_as_default=no
2683 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
2684 [case "${enableval}" in
2686 install_gold_as_default=yes
2689 if test x${default_ld} != x; then
2690 install_gold_as_default=yes
2696 AC_MSG_ERROR([invalid --enable-gold argument])
2700 # Identify the linker which will work hand-in-glove with the newly
2701 # built GCC, so that we can examine its features. This is the linker
2702 # which will be driven by the driver program.
2704 # If build != host, and we aren't building gas in-tree, we identify a
2705 # build->target linker and hope that it will have the same features
2706 # as the host->target linker we'll be using.
2707 gcc_cv_gld_major_version=
2708 gcc_cv_gld_minor_version=
2709 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2710 gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold
2711 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2713 AS_VAR_SET_IF(gcc_cv_ld,, [
2714 if test -x "$DEFAULT_LINKER"; then
2715 gcc_cv_ld="$DEFAULT_LINKER"
2716 elif test $install_gold_as_default = yes \
2717 && test -f $gcc_cv_ld_gold_srcdir/configure.ac \
2718 && test -f ../gold/Makefile \
2719 && test x$build = x$host; then
2720 gcc_cv_ld=../gold/ld-new$build_exeext
2721 elif test -f $gcc_cv_ld_gld_srcdir/configure.ac \
2722 && test -f ../ld/Makefile \
2723 && test x$build = x$host; then
2724 gcc_cv_ld=../ld/ld-new$build_exeext
2725 elif test -x collect-ld$build_exeext; then
2726 # Build using linker in the current directory.
2727 gcc_cv_ld=./collect-ld$build_exeext
2728 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2729 gcc_cv_ld="$LD_FOR_TARGET"
2731 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2734 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2735 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2736 # if the PLUGIN_LD is set ld-new, just have it as ld
2737 # as that is the installed named.
2738 if test x$PLUGIN_LD_SUFFIX = xld-new \
2739 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2742 AC_ARG_WITH(plugin-ld,
2743 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2744 [if test x"$withval" != x; then
2745 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2746 PLUGIN_LD_SUFFIX="$withval"
2748 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2749 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2751 # Check to see if we are using gold instead of ld
2752 AC_MSG_CHECKING(whether we are using gold)
2754 if test x$gcc_cv_ld != x; then
2755 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2756 | grep "GNU gold" > /dev/null; then
2760 AC_MSG_RESULT($ld_is_gold)
2762 # Check to see if we are using mold instead of ld
2763 AC_MSG_CHECKING(whether we are using mold)
2765 if test x$gcc_cv_ld != x; then
2766 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2767 | grep "mold" > /dev/null; then
2771 AC_MSG_RESULT($ld_is_mold)
2774 AC_MSG_CHECKING(gold linker with split stack support as non default)
2775 # Check to see if default ld is not gold, but gold is
2776 # available and has support for split stack. If gcc was configured
2777 # with gold then no checking is done.
2779 if test x$ld_is_gold = xno && which ${gcc_cv_ld}.gold >/dev/null 2>&1; then
2781 # For platforms other than powerpc64*, enable as appropriate.
2784 ld_gold=`which ${gcc_cv_ld}.gold`
2785 # Make sure this gold has minimal split stack support
2786 if $ld_gold --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then
2787 ld_vers=`$ld_gold --version | sed 1q`
2788 gold_vers=`echo $ld_vers | sed -n \
2789 -e 's,^[[^)]]*[[ ]]\([[0-9]][[0-9]]*\.[[0-9]][[0-9]]*[[^)]]*\)) .*$,\1,p'`
2791 # check that the gold version contains the complete split stack support
2792 # on powerpc64 big and little endian
2794 case "$gold_vers" in
2795 2.25.[[1-9]]*|2.2[[6-9]][[.0-9]]*|2.[[3-9]][[.0-9]]*|[[3-9]].[[.0-9]]*) gold_non_default=yes
2797 *) gold_non_default=no
2803 if test $gold_non_default = yes; then
2804 AC_DEFINE(HAVE_GOLD_NON_DEFAULT_SPLIT_STACK, 1,
2805 [Define if the gold linker supports split stack and is available as a non-default])
2808 AC_MSG_RESULT($gold_non_default)
2810 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2811 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2812 case "$ORIGINAL_LD_FOR_TARGET" in
2813 ./collect-ld | ./collect-ld$build_exeext) ;;
2814 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2817 AC_MSG_CHECKING(what linker to use)
2818 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2819 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2820 # Single tree build which includes ld. We want to prefer it
2821 # over whatever linker top-level may have detected, since
2822 # we'll use what we're building after installation anyway.
2823 AC_MSG_RESULT(newly built ld)
2825 in_tree_ld_is_elf=no
2826 if (grep 'EMUL = .*elf' ../ld/Makefile \
2827 || grep 'EMUL = .*linux' ../ld/Makefile \
2828 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2829 in_tree_ld_is_elf=yes
2830 elif test "$ld_is_gold" = yes; then
2831 in_tree_ld_is_elf=yes
2833 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
2836 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2837 if test x$gcc_cv_gld_version != x; then
2841 case $gcc_cv_gld_version in
2844 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2847 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2848 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2850 ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext
2851 ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext
2853 AC_MSG_RESULT($gcc_cv_ld)
2855 gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext`
2856 ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext
2857 ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext
2860 AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET)
2861 AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET)
2863 # Figure out what nm we will be using.
2864 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2865 AS_VAR_SET_IF(gcc_cv_nm,, [
2866 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2867 && test -f ../binutils/Makefile \
2868 && test x$build = x$host; then
2869 gcc_cv_nm=../binutils/nm-new$build_exeext
2870 elif test -x nm$build_exeext; then
2871 gcc_cv_nm=./nm$build_exeext
2872 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2873 gcc_cv_nm="$NM_FOR_TARGET"
2875 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2878 AC_MSG_CHECKING(what nm to use)
2879 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2880 # Single tree build which includes binutils.
2881 AC_MSG_RESULT(newly built nm)
2884 AC_MSG_RESULT($gcc_cv_nm)
2888 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2889 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2890 case "$ORIGINAL_NM_FOR_TARGET" in
2891 ./nm | ./nm$build_exeext) ;;
2892 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2896 # Figure out what objdump we will be using.
2897 AS_VAR_SET_IF(gcc_cv_objdump,, [
2898 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2899 && test -f ../binutils/Makefile \
2900 && test x$build = x$host; then
2901 # Single tree build which includes binutils.
2902 gcc_cv_objdump=../binutils/objdump$build_exeext
2903 elif test -x objdump$build_exeext; then
2904 gcc_cv_objdump=./objdump$build_exeext
2905 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2906 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2908 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2911 AC_MSG_CHECKING(what objdump to use)
2912 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2913 # Single tree build which includes binutils.
2914 AC_MSG_RESULT(newly built objdump)
2915 elif test x$gcc_cv_objdump = x; then
2916 AC_MSG_RESULT(not found)
2918 AC_MSG_RESULT($gcc_cv_objdump)
2921 # Figure out what readelf we will be using.
2922 AS_VAR_SET_IF(gcc_cv_readelf,, [
2923 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2924 && test -f ../binutils/Makefile \
2925 && test x$build = x$host; then
2926 # Single tree build which includes binutils.
2927 gcc_cv_readelf=../binutils/readelf$build_exeext
2928 elif test -x readelf$build_exeext; then
2929 gcc_cv_readelf=./readelf$build_exeext
2930 elif ( set dummy $READELF_FOR_TARGET; test -x $[2] ); then
2931 gcc_cv_readelf="$READELF_FOR_TARGET"
2933 AC_PATH_PROG(gcc_cv_readelf, $READELF_FOR_TARGET)
2936 AC_MSG_CHECKING(what readelf to use)
2937 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2938 # Single tree build which includes binutils.
2939 AC_MSG_RESULT(newly built readelf)
2940 elif test x$gcc_cv_readelf = x; then
2941 AC_MSG_RESULT(not found)
2943 AC_MSG_RESULT($gcc_cv_readelf)
2946 # Figure out what otool we will be using.
2947 AS_VAR_SET_IF(gcc_cv_otool,, [
2948 if test -x otool$build_exeext; then
2949 gcc_cv_otool=./otool$build_exeext
2950 elif ( set dummy $OTOOL_FOR_TARGET; test -x $[2] ); then
2951 gcc_cv_otool="$OTOOL_FOR_TARGET"
2953 AC_PATH_PROG(gcc_cv_otool, $OTOOL_FOR_TARGET)
2956 AC_MSG_CHECKING(what otool to use)
2957 if test x$gcc_cv_otool = x; then
2958 AC_MSG_RESULT(not found)
2960 AC_MSG_RESULT($gcc_cv_otool)
2963 # Figure out the dsymutil we will use.
2964 AS_VAR_SET_IF(gcc_cv_dsymutil,, [
2965 if test -x "$DEFAULT_DSYMUTIL"; then
2966 gcc_cv_dsymutil="$DEFAULT_DSYMUTIL"
2967 elif test -x dsymutil$build_exeext; then
2968 gcc_cv_dsymutil=./dsymutil$build_exeext
2969 elif ( set dummy $DSYMUTIL_FOR_TARGET; test -x $[2] ); then
2970 gcc_cv_dsymutil=$DSYMUTIL_FOR_TARGET
2971 elif ( set dummy $DSYMUTIL; test -x $[2] ); then
2972 gcc_cv_dsymutil=$DSYMUTIL
2974 AC_PATH_PROG(gcc_cv_dsymutil, $DSYMUTIL_FOR_TARGET)
2977 ORIGINAL_DSYMUTIL_FOR_TARGET=$gcc_cv_dsymutil
2978 AC_SUBST(ORIGINAL_DSYMUTIL_FOR_TARGET)
2979 case "$ORIGINAL_DSYMUTIL_FOR_TARGET" in
2980 ./dsymutil | ./dsymutil$build_exeext) ;;
2981 *) AC_CONFIG_FILES(dsymutil:exec-tool.in, [chmod +x dsymutil]) ;;
2984 # Figure out what assembler alignment features are present.
2985 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,,
2988 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2989 [Define if your assembler supports .balign and .p2align.])])
2991 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,,
2993 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2994 [Define if your assembler supports specifying the maximum number
2995 of bytes to skip when using the GAS .p2align command.])])
2997 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,,
2999 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
3000 [Define if your assembler supports .literal16.])])
3002 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,,
3003 [conftest_label1: .word 0
3005 conftest_label2: .word 0
3007 [if test x$gcc_cv_nm != x; then
3008 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
3009 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
3010 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
3012 else gcc_cv_as_subsection_m1=yes
3014 rm -f conftest.nm1 conftest.nm2
3016 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
3017 [Define if your assembler supports .subsection and .subsection -1 starts
3018 emitting at the beginning of your section.])])
3020 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,,
3022 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
3024 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,,
3025 [ .weakref foobar, barfnot],,
3026 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
3028 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,,
3030 .NSUBSPA $CODE$,COMDAT],,
3031 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
3033 # .hidden needs to be supported in both the assembler and the linker,
3034 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
3035 # This is irritatingly difficult to feature test for; we have to check the
3036 # date string after the version number. If we've got an in-tree
3037 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
3039 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
3042 conftest_s=' .globl foobar,hidden'
3045 conftest_s=' .hidden foobar
3049 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,, [$conftest_s])
3052 # Darwin as has some visibility support, though with a different syntax.
3053 gcc_cv_as_hidden=yes
3057 # gnu_indirect_function type is an extension proposed at
3058 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
3059 # selection of function implementation
3060 AC_ARG_ENABLE(gnu-indirect-function,
3061 [AS_HELP_STRING([--enable-gnu-indirect-function],
3062 [enable the use of the @gnu_indirect_function to glibc systems])],
3063 [case $enable_gnu_indirect_function in
3065 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
3066 Valid choices are 'yes' and 'no'.]) ;;
3068 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
3072 AC_MSG_CHECKING(linker ifunc IRELATIVE support)
3073 cat > conftest.s <<EOF
3075 .type foo_resolver, @function
3078 .size foo_resolver, .-foo_resolver
3081 .type foo, %gnu_indirect_function
3082 .set foo, foo_resolver
3085 .type bar, @function
3091 if test x$gcc_cv_as != x \
3092 && test x$gcc_cv_ld != x \
3093 && test x$gcc_cv_readelf != x \
3094 && $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
3095 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1 \
3096 && $gcc_cv_readelf --relocs --wide conftest \
3097 | grep R_RISCV_IRELATIVE > /dev/null 2>&1; then
3098 enable_gnu_indirect_function=yes
3100 rm -f conftest conftest.o conftest.s
3101 AC_MSG_RESULT($enable_gnu_indirect_function)
3105 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
3106 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
3107 [Define if your system supports gnu indirect functions.])
3111 if test $in_tree_ld != yes ; then
3112 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
3113 if echo "$ld_ver" | grep GNU > /dev/null; then
3114 if test x"$ld_is_gold" = xyes; then
3115 # GNU gold --version looks like this:
3117 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
3119 # We extract the binutils version which is more familiar and specific
3120 # than the gold version.
3121 ld_vers=`echo $ld_ver | sed -n \
3122 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3124 # GNU ld --version looks like this:
3126 # GNU ld (GNU Binutils) 2.21.51.20110225
3127 ld_vers=`echo $ld_ver | sed -n \
3128 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3130 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)\(-*\)\([01][0-9]\)\2\([0-3][0-9]\).*$,\1\3\4,p'`
3131 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3132 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3133 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
3137 # Solaris 2 ld -V output looks like this for a regular version:
3139 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
3141 # but test versions add stuff at the end:
3143 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
3145 # ld and ld.so.1 are guaranteed to be updated in lockstep, so ld version
3146 # numbers can be used in ld.so.1 feature checks even if a different
3147 # linker is configured.
3148 ld_ver=`$gcc_cv_ld -V 2>&1`
3149 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
3150 ld_vers=`echo $ld_ver | sed -n \
3151 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
3152 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3153 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3161 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
3162 [[if test $in_tree_ld = yes ; then
3164 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
3165 && test $in_tree_ld_is_elf = yes; then
3166 gcc_cv_ld_hidden=yes
3169 gcc_cv_ld_hidden=yes
3170 if test x"$ld_is_gold" = xyes; then
3172 elif test x"$ld_is_mold" = xyes; then
3174 elif echo "$ld_ver" | grep GNU > /dev/null; then
3175 if test 0"$ld_date" -lt 20020404; then
3176 if test -n "$ld_date"; then
3177 # If there was date string, but was earlier than 2002-04-04, fail
3179 elif test -z "$ld_vers"; then
3180 # If there was no date string nor ld version number, something is wrong
3183 test -z "$ld_vers_patch" && ld_vers_patch=0
3184 if test "$ld_vers_major" -lt 2; then
3186 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
3187 gcc_cv_ld_hidden="no"
3188 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
3196 gcc_cv_ld_hidden=yes
3199 # Darwin ld has some visibility support.
3200 gcc_cv_ld_hidden=yes
3202 hppa64*-*-hpux* | ia64*-*-hpux*)
3203 gcc_cv_ld_hidden=yes
3206 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
3207 # .symbolic was only added in Solaris 9 12/02.
3208 gcc_cv_ld_hidden=yes
3216 libgcc_visibility=no
3217 AC_SUBST(libgcc_visibility)
3218 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
3219 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
3220 libgcc_visibility=yes
3221 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
3222 [Define if your assembler and linker support .hidden.])
3225 AC_MSG_CHECKING(linker read-only and read-write section mixing)
3226 gcc_cv_ld_ro_rw_mix=unknown
3227 if test $in_tree_ld = yes ; then
3228 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
3229 && test $in_tree_ld_is_elf = yes; then
3230 gcc_cv_ld_ro_rw_mix=read-write
3232 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3233 echo '.section myfoosect, "a"' > conftest1.s
3234 echo '.section myfoosect, "aw"' > conftest2.s
3235 echo '.byte 1' >> conftest2.s
3236 echo '.section myfoosect, "a"' > conftest3.s
3237 echo '.byte 0' >> conftest3.s
3238 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
3239 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
3240 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1; then
3241 if $gcc_cv_ld -shared -o conftest1.so conftest1.o \
3242 conftest2.o conftest3.o > /dev/null 2>&1 \
3243 || $gcc_cv_ld -r -o conftest1.so conftest1.o \
3244 conftest2.o conftest3.o > /dev/null 2>&1; then
3245 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
3246 | sed -e '/myfoosect/!d' -e N`
3247 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
3248 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
3249 gcc_cv_ld_ro_rw_mix=read-only
3251 gcc_cv_ld_ro_rw_mix=read-write
3257 rm -f conftest.* conftest[123].*
3260 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
3261 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
3262 [Define if your linker links a mix of read-only
3263 and read-write sections into a read-write section.])
3265 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
3267 gcc_AC_INITFINI_ARRAY
3269 # Some assemblers (GNU as for LoongArch) generates relocations for
3270 # leb128 symbol arithmetic for relaxation, we need to disable relaxation
3271 # probing leb128 support then.
3274 gcc_GAS_CHECK_FEATURE([-mno-relax support],
3275 gcc_cv_as_mno_relax,[-mno-relax],[.text],,
3276 [check_leb128_asflags=-mno-relax])
3279 check_leb128_asflags=
3283 # Check if we have .[us]leb128, and support symbol arithmetic with it.
3284 # Older versions of GAS and some non-GNU assemblers, have a bugs handling
3285 # these directives, even when they appear to accept them.
3286 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
3287 [$check_leb128_asflags],
3294 .uleb128 0x8000000000000000
3297 if test "x$gcc_cv_objdump" != x; then
3298 if $gcc_cv_objdump -s conftest.o 2>/dev/null \
3299 | grep '04800a8e 78808080 80808080 808001' >/dev/null; then
3300 gcc_cv_as_leb128=yes
3302 elif test "x$gcc_cv_otool" != x; then
3303 if $gcc_cv_otool -d conftest.o 2>/dev/null \
3304 | grep '04 80 0a 8e 78 80 80 80 80 80 80 80 80 80 01' >/dev/null; then
3305 gcc_cv_as_leb128=yes
3308 # play safe, assume the assembler is broken.
3312 [AC_DEFINE(HAVE_AS_LEB128, 1,
3313 [Define if your assembler supports .sleb128 and .uleb128.])],
3314 [AC_DEFINE(HAVE_AS_LEB128, 0,
3315 [Define if your assembler supports .sleb128 and .uleb128.])])
3317 # Determine if an .eh_frame section is read-only.
3318 gcc_fn_eh_frame_ro () {
3319 $gcc_cv_as $1 -o conftest.o conftest.s > /dev/null 2>&1 && \
3320 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
3321 sed -e '/.eh_frame/!d' -e N | grep READONLY > /dev/null
3324 # Check if we have assembler support for unwind directives.
3325 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,,
3331 .cfi_escape 1, 2, 3, 4, 5
3335 # If the linker used on Solaris (like Sun ld) isn't capable of merging
3336 # read-only and read-write sections, we need to make sure that the
3337 # assembler used emits read-write .eh_frame sections.
3338 if test "x$gcc_cv_ld_ro_rw_mix" = xread-write; then
3339 gcc_cv_as_cfi_directive=yes
3340 elif test "x$gcc_cv_objdump" = x; then
3341 # No objdump, err on the side of caution.
3342 gcc_cv_as_cfi_directive=no
3344 if test x$gas = xyes; then
3352 sparc*-*-solaris2.*)
3353 # On Solaris/SPARC, .eh_frame sections should always be read-write.
3354 if gcc_fn_eh_frame_ro $as_32_opt \
3355 || gcc_fn_eh_frame_ro $as_64_opt; then
3356 gcc_cv_as_cfi_directive=no
3358 gcc_cv_as_cfi_directive=yes
3361 i?86-*-solaris2.* | x86_64-*-solaris2.*)
3362 # On Solaris/x86, make sure that GCC and assembler agree on using
3363 # read-only .eh_frame sections for 64-bit.
3364 if gcc_fn_eh_frame_ro $as_32_opt; then
3365 gcc_cv_as_cfi_directive=no
3366 elif gcc_fn_eh_frame_ro $as_64_opt; then
3367 gcc_cv_as_cfi_directive=yes
3369 gcc_cv_as_cfi_directive=no
3376 gcc_cv_as_cfi_directive=yes
3379 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
3380 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,,
3383 .cfi_adjust_cfa_offset 64
3385 .cfi_adjust_cfa_offset 128
3388 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
3389 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
3390 gcc_cv_as_cfi_advance_working=yes
3394 # no objdump, err on the side of caution
3395 gcc_cv_as_cfi_advance_working=no
3397 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
3398 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
3399 [`if test $gcc_cv_as_cfi_directive = yes \
3400 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
3401 [Define 0/1 if your assembler supports CFI directives.])
3403 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
3404 gcc_GAS_CHECK_FEATURE([cfi personality directive],
3405 gcc_cv_as_cfi_personality_directive,,
3408 .cfi_personality 0, symbol
3410 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
3411 [`if test $gcc_cv_as_cfi_personality_directive = yes; then echo 1; else echo 0; fi`],
3412 [Define 0/1 if your assembler supports .cfi_personality.])
3414 gcc_GAS_CHECK_FEATURE([cfi sections directive],
3415 gcc_cv_as_cfi_sections_directive,,
3417 .cfi_sections .debug_frame, .eh_frame
3421 win32 | pe | cygwin* | mingw32*)
3422 # Need to check that we generated the correct relocation for the
3423 # .debug_frame section. This was fixed for binutils 2.21.
3424 gcc_cv_as_cfi_sections_directive=no
3425 if test "x$gcc_cv_objdump" != x; then
3426 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
3427 grep -i secrel > /dev/null; then
3428 gcc_cv_as_cfi_sections_directive=yes
3433 gcc_cv_as_cfi_sections_directive=yes
3436 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
3437 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
3438 [`if test $gcc_cv_as_cfi_sections_directive = yes; then echo 1; else echo 0; fi`],
3439 [Define 0/1 if your assembler supports .cfi_sections.])
3441 # GAS versions up to and including 2.11.0 may mis-optimize
3443 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,,
3450 .section .eh_frame,"aw",@progbits
3452 .4byte .LECIE1-.LSCIE1
3466 .4byte .LEFDE1-.LASFDE1
3468 .4byte .LASFDE1-__FRAME_BEGIN__
3476 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
3477 cat > conftest.lit <<EOF
3478 0000 10000000 00000000 017a0001 781a0004 .........z..x...
3479 0010 01000000 12000000 18000000 00000000 ................
3480 0020 08000000 04080000 0044 .........D @&t@
3482 cat > conftest.big <<EOF
3483 0000 00000010 00000000 017a0001 781a0004 .........z..x...
3484 0010 00000001 00000012 00000018 00000000 ................
3485 0020 00000008 04000000 0844 .........D @&t@
3487 # If the assembler didn't choke, and we can objdump,
3488 # and we got the correct data, then succeed.
3489 # The text in the here-document typically retains its unix-style line
3490 # endings, while the output of objdump will use host line endings.
3491 # Therefore, use diff -b for the comparisons.
3492 if test x$gcc_cv_objdump != x \
3493 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
3494 | tail -3 > conftest.got \
3495 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
3496 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
3498 gcc_cv_as_eh_frame=yes
3499 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
3500 gcc_cv_as_eh_frame=buggy
3502 # Uh oh, what do we do now?
3503 gcc_cv_as_eh_frame=no
3506 if test $gcc_cv_as_eh_frame = buggy; then
3507 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
3508 [Define if your assembler mis-optimizes .eh_frame data.])
3511 # Test if the assembler supports the section flag 'e' or #exclude for
3512 # specifying an excluded section.
3513 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_e,
3517 if test $gcc_cv_as_section_exclude_e = no; then
3519 # Solaris as uses #exclude instead.
3523 conftest_s='.section "foo1", #exclude'
3525 i?86-*-solaris2* | x86_64-*-solaris2*)
3526 conftest_s='.section foo1, #exclude'
3531 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_hash,,
3535 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3536 [`if test $gcc_cv_as_section_exclude_e = yes || test $gcc_cv_as_section_exclude_hash = yes; then echo 1; else echo 0; fi`],
3537 [Define if your assembler supports specifying the exclude section flag.])
3539 # Test if the assembler supports the section flag 'R' for specifying
3540 # section with SHF_GNU_RETAIN.
3542 # Solaris may use GNU assembler with Solairs ld. Even if GNU
3543 # assembler supports the section flag 'R', it doesn't mean that
3544 # Solairs ld supports it.
3546 gcc_cv_as_shf_gnu_retain=no
3549 gcc_GAS_CHECK_FEATURE([section 'R' flag], gcc_cv_as_shf_gnu_retain,
3551 [.section .foo,"awR",%progbits
3555 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_GNU_RETAIN,
3556 [`if test $gcc_cv_as_shf_gnu_retain = yes; then echo 1; else echo 0; fi`],
3557 [Define 0/1 if your assembler supports marking sections with SHF_GNU_RETAIN flag.])
3559 # Test if the assembler supports the section flag 'o' for specifying
3560 # section with link-order.
3562 # Solaris may use GNU assembler with Solairs ld. Even if GNU
3563 # assembler supports the section flag 'o', it doesn't mean that
3564 # Solairs ld supports it.
3566 gcc_cv_as_section_link_order=no
3569 gcc_GAS_CHECK_FEATURE([section 'o' flag], gcc_cv_as_section_link_order,
3573 .section __patchable_function_entries,"awo",%progbits,.foo
3577 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_LINK_ORDER,
3578 [`if test $gcc_cv_as_section_link_order = yes; then echo 1; else echo 0; fi`],
3579 [Define 0/1 if your assembler supports 'o' flag in .section directive.])
3581 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
3583 [.section .rodata.str, "aMS", @progbits, 1])
3584 if test $gcc_cv_as_shf_merge = no; then
3585 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
3587 [.section .rodata.str, "aMS", %progbits, 1])
3589 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
3590 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
3591 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
3593 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
3594 gcc_cv_as_comdat_group,
3596 [.section .text,"axG",@progbits,.foo,comdat])
3597 if test $gcc_cv_as_comdat_group = yes; then
3598 gcc_cv_as_comdat_group_percent=no
3599 gcc_cv_as_comdat_group_group=no
3601 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
3602 gcc_cv_as_comdat_group_percent,
3604 [.section .text,"axG",%progbits,.foo,comdat])
3605 if test $gcc_cv_as_comdat_group_percent = yes; then
3606 gcc_cv_as_comdat_group_group=no
3609 # Sun as uses a completely different syntax.
3614 .group foo,".text%foo",#comdat
3615 .section ".text%foo", #alloc,#execinstr,#progbits
3620 i?86-*-solaris2* | x86_64-*-solaris2*)
3622 .group foo,.text%foo,#comdat
3623 .section .text%foo, "ax", @progbits
3629 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
3630 gcc_cv_as_comdat_group_group,
3634 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
3635 gcc_cv_as_comdat_group_group=no
3639 if test x"$ld_is_gold" = xyes; then
3641 elif test x"$ld_is_mold" = xyes; then
3643 elif test $in_tree_ld = yes ; then
3645 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3646 && test $in_tree_ld_is_elf = yes; then
3649 elif echo "$ld_ver" | grep GNU > /dev/null; then
3651 if test 0"$ld_date" -lt 20050308; then
3652 if test -n "$ld_date"; then
3653 # If there was date string, but was earlier than 2005-03-08, fail
3655 elif test "$ld_vers_major" -lt 2; then
3657 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
3664 *-*-solaris2.1[1-9]*)
3666 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
3667 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
3670 # If using Sun as for COMDAT group as emitted by GCC, one needs at
3671 # least ld version 1.2267.
3672 if test "$ld_vers_major" -gt 1; then
3674 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
3676 elif test "$ld_vers_minor" -ge 2267; then
3681 # Assume linkers other than GNU ld don't support COMDAT group.
3687 # Allow overriding the automatic COMDAT group tests above.
3688 AC_ARG_ENABLE(comdat,
3689 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
3690 [comdat_group="$enable_comdat"])
3691 if test $comdat_group = no; then
3692 gcc_cv_as_comdat_group=no
3693 gcc_cv_as_comdat_group_percent=no
3694 gcc_cv_as_comdat_group_group=no
3696 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
3697 [`if test $gcc_cv_as_comdat_group = yes \
3698 || test $gcc_cv_as_comdat_group_percent = yes \
3699 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
3700 [Define 0/1 if your assembler and linker support COMDAT groups.])
3702 gcc_GAS_CHECK_FEATURE([line table is_stmt support],
3706 .loc 1 1 0 is_stmt 1],,
3707 [AC_DEFINE(HAVE_GAS_LOC_STMT, 1,
3708 [Define if your assembler supports the .loc is_stmt sub-directive.])])
3710 gcc_GAS_CHECK_FEATURE([line table discriminator support],
3711 gcc_cv_as_discriminator,,
3714 .loc 1 1 0 discriminator 1],,
3715 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
3716 [Define if your assembler supports the .loc discriminator sub-directive.])])
3718 # Catch the newlib flag of the same name so we can gate GCC features on it.
3719 AC_ARG_ENABLE(newlib-nano-formatted-io,
3720 [AS_HELP_STRING([--enable-newlib-nano-formatted-io], [Use nano version
3722 [case "${enableval}" in
3726 AC_MSG_ERROR([unknown newlib-nano-formatted-io setting $enableval])
3730 # Thread-local storage - the check is heavily parameterized.
3737 .section ".tdata","awT",@progbits
3740 ldq $27,__tls_get_addr($29) !literal!1
3741 lda $16,foo($29) !tlsgd!1
3742 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
3743 ldq $27,__tls_get_addr($29) !literal!2
3744 lda $16,foo($29) !tlsldm!2
3745 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
3746 ldq $1,foo($29) !gotdtprel
3747 ldah $2,foo($29) !dtprelhi
3748 lda $3,foo($2) !dtprello
3749 lda $4,foo($29) !dtprel
3750 ldq $1,foo($29) !gottprel
3751 ldah $2,foo($29) !tprelhi
3752 lda $3,foo($2) !tprello
3753 lda $4,foo($29) !tprel'
3754 tls_as_opt=--fatal-warnings
3758 add_s r0,r0, @foo@tpoff'
3760 cris-*-*|crisv32-*-*)
3762 .section ".tdata","awT",@progbits
3767 tls_as_opt=--fatal-warnings
3771 .section ".tdata","awT",@progbits
3781 .section ".tdata","awT",@progbits
3785 addil LT%foo-$tls_gdidx$,gp
3786 ldo RT%foo-$tls_gdidx$(%r1),%arg0
3789 addil LT%foo-$tls_ldidx$,gp
3791 ldo RT%foo-$tls_ldidx$(%r1),%arg0
3792 addil LR%foo-$tls_dtpoff$,%ret0
3793 ldo RR%foo-$tls_dtpoff$(%r1),%t1
3795 addil LT%foo-$tls_ieoff$,gp
3796 ldw RT%foo-$tls_ieoff$(%r1),%t2
3799 addil LR%foo-$tls_leoff$,%t1
3800 ldo RR%foo-$tls_leoff$(%r1),%t2'
3801 tls_as_opt=--fatal-warnings
3805 .section ".tdata","awT",%progbits
3814 i[34567]86-*-* | x86_64-*-*)
3816 i[34567]86-*-solaris2.* | x86_64-*-solaris2.*)
3823 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3825 .section .tdata,"awt",@progbits'
3828 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
3829 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
3833 .section ".tdata","awT",@progbits'
3835 tls_as_opt="--fatal-warnings"
3839 if test x$on_solaris = xyes; then
3841 yes) tls_as_opt="$tls_as_opt --32" ;;
3844 conftest_s="$conftest_s
3848 leal foo@tlsgd(,%ebx,1), %eax
3849 leal foo@tlsldm(%ebx), %eax
3850 leal foo@dtpoff(%eax), %edx
3851 movl foo@gottpoff(%ebx), %eax
3852 subl foo@gottpoff(%ebx), %eax
3853 addl foo@gotntpoff(%ebx), %eax
3854 movl foo@indntpoff, %eax
3855 movl \$foo@tpoff, %eax
3856 subl \$foo@tpoff, %eax
3857 leal foo@ntpoff(%ecx), %eax"
3860 if test x$on_solaris = xyes; then
3862 yes) tls_as_opt="$tls_as_opt --64" ;;
3863 no) tls_as_opt="$tls_as_opt -xarch=amd64" ;;
3866 conftest_s="$conftest_s
3870 leaq foo@tlsgd(%rip), %rdi
3871 leaq foo@tlsld(%rip), %rdi
3872 leaq foo@dtpoff(%rax), %rdx
3873 movq foo@gottpoff(%rip), %rax
3874 movq \$foo@tpoff, %rax"
3880 .section ".tdata","awT",@progbits
3883 addl r16 = @ltoff(@dtpmod(foo#)), gp
3884 addl r17 = @ltoff(@dtprel(foo#)), gp
3885 addl r18 = @ltoff(@tprel(foo#)), gp
3886 addl r19 = @dtprel(foo#), gp
3887 adds r21 = @dtprel(foo#), r13
3888 movl r23 = @dtprel(foo#)
3889 addl r20 = @tprel(foo#), gp
3890 adds r22 = @tprel(foo#), r13
3891 movl r24 = @tprel(foo#)'
3892 tls_as_opt=--fatal-warnings
3896 .section .tdata,"awT",@progbits
3903 tls_as_opt='--fatal-warnings'
3907 .section .tdata,"awT",@progbits
3911 addik r5,r20,x@TLSGD
3912 addik r5,r20,x@TLSLDM'
3913 tls_as_opt='--fatal-warnings'
3917 .section .tdata,"awT",@progbits
3921 addiu $4, $28, %tlsgd(x)
3922 addiu $4, $28, %tlsldm(x)
3923 lui $4, %dtprel_hi(x)
3924 addiu $4, $4, %dtprel_lo(x)
3925 lw $4, %gottprel(x)($28)
3926 lui $4, %tprel_hi(x)
3927 addiu $4, $4, %tprel_lo(x)'
3928 tls_as_opt='-32 --fatal-warnings'
3932 .section .tdata,"awT",@progbits
3937 move.l x@TLSGD(%a5),%a0
3938 move.l x@TLSLDM(%a5),%a0
3939 move.l x@TLSLDO(%a5),%a0
3940 move.l x@TLSIE(%a5),%a0
3941 move.l x@TLSLE(%a5),%a0'
3942 tls_as_opt='--fatal-warnings'
3946 .section ".tdata","awT",@progbits'
3947 tls_as_opt="--fatal-warnings"
3951 .section ".tdata","awT",%progbits
3955 add x0, x0, #:tlsgd_lo12:x
3958 tls_as_opt='--fatal-warnings'
3962 .section ".tdata","awT",@progbits
3965 l.movhi r3, tpoffha(foo)
3967 l.lwz r4, tpofflo(foo)(r3)'
3968 tls_as_opt=--fatal-warnings
3972 .extern __get_tpointer
3988 .section ".tdata","awT",@progbits
3996 addi 3,2,ld0@got@tlsgd
4002 addi 3,2,x1@got@tlsld
4008 addis 9,3,x2@dtprel@ha
4009 addi 9,9,x2@dtprel@l
4012 ld 9,x3@got@dtprel(2)
4016 tls_as_opt="-a64 --fatal-warnings"
4020 .section ".tdata","awT",@progbits
4028 addi 3,31,ld0@got@tlsgd
4030 addi 3,31,x1@got@tlsld
4033 addis 9,3,x2@dtprel@ha
4034 addi 9,9,x2@dtprel@l
4035 lwz 9,x3@got@tprel(31)
4038 addis 9,2,x2@tprel@ha
4039 addi 9,9,x2@tprel@l'
4040 tls_as_opt="-a32 --fatal-warnings"
4044 .section .tdata,"awT",@progbits
4048 call __tls_get_addr'
4049 tls_as_opt='--fatal-warnings'
4053 .section ".tdata","awT",@progbits
4062 l %r1,foo@GOTNTPOFF(%r12)
4063 l %r1,0(%r1):tls_load:foo
4064 bas %r14,0(%r1,%r13):tls_gdcall:foo
4065 bas %r14,0(%r1,%r13):tls_ldcall:foo'
4066 tls_as_opt="-m31 --fatal-warnings"
4070 .section ".tdata","awT",@progbits
4078 lg %r1,foo@GOTNTPOFF(%r12)
4079 larl %r1,foo@INDNTPOFF
4080 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
4081 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
4082 tls_as_opt="-m64 -Aesame --fatal-warnings"
4084 sh-*-* | sh[123456789lbe]*-*-*)
4086 .section ".tdata","awT",@progbits
4094 tls_as_opt=--fatal-warnings
4098 sparc*-sun-solaris2.*)
4105 if test x$on_solaris = xyes && test x$gas_flag = xno; then
4107 .section ".tdata",#alloc,#write,#tls'
4110 .section ".tdata","awT",@progbits'
4111 tls_as_opt="-32 --fatal-warnings"
4113 conftest_s="$conftest_s
4116 sethi %tgd_hi22(foo), %o0
4117 add %o0, %tgd_lo10(foo), %o1
4118 add %l7, %o1, %o0, %tgd_add(foo)
4119 call __tls_get_addr, %tgd_call(foo)
4120 sethi %tldm_hi22(foo), %l1
4121 add %l1, %tldm_lo10(foo), %l2
4122 add %l7, %l2, %o0, %tldm_add(foo)
4123 call __tls_get_addr, %tldm_call(foo)
4124 sethi %tldo_hix22(foo), %l3
4125 xor %l3, %tldo_lox10(foo), %l4
4126 add %o0, %l4, %l5, %tldo_add(foo)
4127 sethi %tie_hi22(foo), %o3
4128 add %o3, %tie_lo10(foo), %o3
4129 ld [%l7 + %o3], %o2, %tie_ld(foo)
4130 add %g7, %o2, %o4, %tie_add(foo)
4131 sethi %tle_hix22(foo), %l1
4132 xor %l1, %tle_lox10(foo), %o5
4133 ld [%g7 + %o5], %o1"
4137 .section ".tdata","awT",@progbits
4140 movi a8, foo@TLSFUNC
4141 movi a10, foo@TLSARG
4142 callx8.tls a8, foo@TLSCALL'
4147 if test "x$enable_tls" = xno ; then
4148 : # TLS explicitly disabled.
4149 elif test "x$enable_tls" = xyes ; then
4150 set_have_as_tls=yes # TLS explicitly enabled.
4151 elif test -z "$conftest_s"; then
4152 : # If we don't have a check, assume no support.
4154 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
4155 [$tls_as_opt], [$conftest_s],,
4156 [set_have_as_tls=yes])
4158 if test $set_have_as_tls = yes ; then
4159 AC_DEFINE(HAVE_AS_TLS, 1,
4160 [Define if your assembler and linker support thread-local storage.])
4163 # Target-specific assembler checks.
4165 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
4166 gcc_cv_ld_static_dynamic=no
4167 gcc_cv_ld_static_option='-Bstatic'
4168 gcc_cv_ld_dynamic_option='-Bdynamic'
4169 if test $in_tree_ld = yes ; then
4170 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
4171 gcc_cv_ld_static_dynamic=yes
4173 elif test x$gcc_cv_ld != x; then
4174 # Check if linker supports -Bstatic/-Bdynamic option
4175 if $gcc_cv_ld --help 2>&1 | grep -- -Bstatic > /dev/null \
4176 && $gcc_cv_ld --help 2>&1 | grep -- -Bdynamic > /dev/null; then
4177 gcc_cv_ld_static_dynamic=yes
4180 # AIX ld uses -b flags
4181 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
4182 gcc_cv_ld_static_dynamic=yes
4183 gcc_cv_ld_static_option="-bstatic"
4184 gcc_cv_ld_dynamic_option="-bdynamic"
4186 # HP-UX ld uses -a flags to select between shared and archive.
4188 if test x"$gnu_ld" = xno; then
4189 gcc_cv_ld_static_dynamic=yes
4190 gcc_cv_ld_static_option="-aarchive_shared"
4191 gcc_cv_ld_dynamic_option="-adefault"
4194 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
4196 gcc_cv_ld_static_dynamic=yes
4201 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
4202 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
4203 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
4204 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
4205 [Define to the linker option to disable use of shared objects.])
4206 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
4207 [Define to the linker option to enable use of shared objects.])
4209 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
4211 AC_MSG_CHECKING(linker --version-script option)
4212 gcc_cv_ld_version_script=no
4213 ld_version_script_option=''
4214 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
4215 gcc_cv_ld_version_script=yes
4216 ld_version_script_option='--version-script'
4217 elif test x$gcc_cv_ld != x; then
4219 # Solaris 2 ld always supports -M. It also supports a subset of
4220 # --version-script since Solaris 11.4, but requires
4221 # -z gnu-version-script-compat to activate.
4223 gcc_cv_ld_version_script=yes
4224 ld_version_script_option='-M'
4228 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
4229 AC_MSG_RESULT($gcc_cv_ld_version_script)
4230 AC_SUBST(ld_version_script_option)
4232 AC_MSG_CHECKING(linker soname option)
4234 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
4235 gcc_cv_ld_soname=yes
4236 ld_soname_option='-soname'
4237 elif test x$gcc_cv_ld != x; then
4240 gcc_cv_ld_soname=yes
4241 ld_soname_option='-install_name'
4243 # Solaris 2 ld always supports -h. It also supports --soname for GNU
4244 # ld compatiblity since some Solaris 10 update.
4246 gcc_cv_ld_soname=yes
4247 ld_soname_option='-h'
4251 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
4252 AC_MSG_RESULT($gcc_cv_ld_soname)
4253 AC_SUBST(ld_soname_option)
4255 if test x"$demangler_in_ld" = xyes; then
4256 AC_MSG_CHECKING(linker --demangle support)
4257 gcc_cv_ld_demangle=no
4258 if test $in_tree_ld = yes; then
4259 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
4260 gcc_cv_ld_demangle=yes
4262 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
4263 # Check if the GNU linker supports --demangle option
4264 if $gcc_cv_ld --help 2>&1 | grep no-demangle > /dev/null; then
4265 gcc_cv_ld_demangle=yes
4268 if test x"$gcc_cv_ld_demangle" = xyes; then
4269 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
4270 [Define if your linker supports --demangle option.])
4272 AC_MSG_RESULT($gcc_cv_ld_demangle)
4275 AC_MSG_CHECKING(linker plugin support)
4277 if test -f liblto_plugin.la; then
4278 save_ld_ver="$ld_ver"
4279 save_ld_vers_major="$ld_vers_major"
4280 save_ld_vers_minor="$ld_vers_minor"
4281 save_ld_is_gold="$ld_is_gold"
4285 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
4287 # FIXME: ld_is_gold?
4288 ld_vers_major="$gcc_cv_gld_major_version"
4289 ld_vers_minor="$gcc_cv_gld_minor_version"
4291 # Determine plugin linker version.
4292 # FIXME: Partial duplicate from above, generalize.
4294 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
4295 if echo "$ld_ver" | grep GNU > /dev/null; then
4296 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
4298 ld_vers=`echo $ld_ver | sed -n \
4299 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
4301 ld_vers=`echo $ld_ver | sed -n \
4302 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
4304 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
4305 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
4310 # Determine plugin support.
4311 if echo "$ld_ver" | grep GNU > /dev/null; then
4312 # Require GNU ld or gold 2.21+ for plugin support by default.
4313 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
4315 elif test "$ld_is_mold" = yes; then
4317 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
4318 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
4323 ld_ver="$save_ld_ver"
4324 ld_vers_major="$save_ld_vers_major"
4325 ld_vers_minor="$save_ld_vers_minor"
4326 ld_is_gold="$save_ld_is_gold"
4328 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
4329 [Define to the level of your linker's plugin support.])
4330 AC_MSG_RESULT($gcc_cv_lto_plugin)
4332 # Target OS-specific assembler checks.
4334 case "$target_os" in
4336 gcc_GAS_CHECK_FEATURE([-mmacosx-version-min option],
4337 gcc_cv_as_mmacosx_version_min,
4338 [-mmacosx-version-min=10.1], [.text],,
4339 [AC_DEFINE(HAVE_AS_MMACOSX_VERSION_MIN_OPTION, 1,
4340 [Define if your macOS assembler supports the -mmacos-version-min option.])])
4341 if test x$gcc_cv_as_mmacosx_version_min = "xyes"; then
4342 gcc_GAS_CHECK_FEATURE([.build_version],
4343 gcc_cv_as_darwin_build_version,
4344 [-mmacosx-version-min=10.14],
4345 [ .build_version macos, 10, 14 sdk_version 10, 14],,
4346 [AC_DEFINE(HAVE_AS_MACOS_BUILD_VERSION, 1,
4347 [Define if your macOS assembler supports .build_version directives])])
4352 # Target CPU-specific assembler checks.
4356 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,
4357 [-mabi=lp64], [.text],,,)
4358 if test x$gcc_cv_as_aarch64_mabi = xyes; then
4359 AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
4360 [Define if your assembler supports the -mabi option.])
4362 if test x$with_abi = xilp32; then
4363 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
4364 Upgrade the Assembler.])
4366 if test x"$with_multilib_list" = xdefault; then
4367 TM_MULTILIB_CONFIG=lp64
4369 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
4370 for aarch64_multilib in ${aarch64_multilibs}; do
4371 case ${aarch64_multilib} in
4373 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
4374 Upgrade the Assembler.])
4382 # Check if we have binutils support for relocations types needed by -fpic
4383 gcc_GAS_CHECK_FEATURE([-fpic relocs], gcc_cv_as_aarch64_picreloc,,
4386 ldr x0, [[x2, #:gotpage_lo15:globalsym]]
4387 ],,[AC_DEFINE(HAVE_AS_SMALL_PIC_RELOCS, 1,
4388 [Define if your assembler supports relocs needed by -fpic.])])
4389 # Enable Branch Target Identification Mechanism and Return Address
4390 # Signing by default.
4391 AC_ARG_ENABLE(standard-branch-protection,
4393 AS_HELP_STRING([--enable-standard-branch-protection],
4394 [enable Branch Target Identification Mechanism and Return Address Signing by default for AArch64])
4395 AS_HELP_STRING([--disable-standard-branch-protection],
4396 [disable Branch Target Identification Mechanism and Return Address Signing by default for AArch64])
4401 tm_defines="${tm_defines} TARGET_ENABLE_BTI=1 TARGET_ENABLE_PAC_RET=1"
4406 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-standard-branch-protection.\
4407 Valid choices are 'yes' and 'no'.])
4412 # Enable default workaround for AArch64 Cortex-A53 erratum 835769.
4413 AC_ARG_ENABLE(fix-cortex-a53-835769,
4415 AS_HELP_STRING([--enable-fix-cortex-a53-835769],
4416 [enable workaround for AArch64 Cortex-A53 erratum 835769 by default])
4417 AS_HELP_STRING([--disable-fix-cortex-a53-835769],
4418 [disable workaround for AArch64 Cortex-A53 erratum 835769 by default])
4423 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1"
4428 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\
4429 Valid choices are 'yes' and 'no'.])
4435 # Enable default workaround for AArch64 Cortex-A53 erratum 843419.
4436 AC_ARG_ENABLE(fix-cortex-a53-843419,
4438 AS_HELP_STRING([--enable-fix-cortex-a53-843419],
4439 [enable workaround for AArch64 Cortex-A53 erratum 843419 by default])
4440 AS_HELP_STRING([--disable-fix-cortex-a53-843419],
4441 [disable workaround for AArch64 Cortex-A53 erratum 843419 by default])
4446 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1"
4451 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\
4452 Valid choices are 'yes' and 'no'.])
4460 # All TARGET_ABI_OSF targets.
4461 alpha*-*-linux* | alpha*-*-*bsd*)
4462 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4463 gcc_cv_as_alpha_explicit_relocs,,
4466 extbl $3, $2, $3 !lituse_bytoff!1
4467 ldq $2, a($29) !literal!1
4468 ldq $4, b($29) !literal!2
4469 ldq_u $3, 0($2) !lituse_base!1
4470 ldq $27, f($29) !literal!5
4471 jsr $26, ($27), f !lituse_jsr!5
4472 ldah $29, 0($26) !gpdisp!3
4473 lda $0, c($29) !gprel
4474 ldah $1, d($29) !gprelhigh
4475 lda $1, d($1) !gprellow
4476 lda $29, 0($29) !gpdisp!3],,
4477 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
4478 [Define if your assembler supports explicit relocations.])])
4479 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
4480 gcc_cv_as_alpha_jsrdirect_relocs,,
4483 ldq $27, a($29) !literal!1
4484 jsr $26, ($27), a !lituse_jsrdirect!1],,
4485 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
4486 [Define if your assembler supports the lituse_jsrdirect relocation.])])
4490 gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax,
4491 [--mlink-relax], [.text],,
4492 [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1,
4493 [Define if your avr assembler supports --mlink-relax option.])])
4495 gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,
4497 [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1,
4498 [Define if your avr assembler supports -mrmw option.])])
4500 gcc_GAS_CHECK_FEATURE([__gcc_isr pseudo instruction],
4501 gcc_cv_as_avr_mgccisr,
4507 [AC_DEFINE(HAVE_AS_AVR_MGCCISR_OPTION, 1,
4508 [Define if your avr assembler supports -mgcc-isr option.])])
4510 avr_ld_ver="`$gcc_cv_ld -v | sed -e 's:^.* ::'`"
4511 # Check how default linker description file implements .rodata for
4512 # avrxmega3 (PR21472). avr-gcc assumes .rodata is *not* loaded to
4513 # RAM so avr-gcc skips __do_copy_data for .rodata objects.
4514 AC_MSG_CHECKING(binutils for avrxmega3 .rodata support)
4515 cat > conftest.s <<EOF
4516 .section .rodata,"a",@progbits
4518 ;; avr-nm should print "... R xxvaryy", not "... D xxvaryy".
4523 AC_TRY_COMMAND([$gcc_cv_as -mmcu=avrxmega3 conftest.s -o conftest.o])
4524 AC_TRY_COMMAND([$gcc_cv_ld -mavrxmega3 conftest.o -o conftest.elf])
4525 AC_TRY_COMMAND([$gcc_cv_nm conftest.elf > conftest.nm])
4526 if test -s conftest.nm
4528 if grep ' R xxvaryy' conftest.nm > /dev/null; then
4530 AC_DEFINE(HAVE_LD_AVR_AVRXMEGA3_RODATA_IN_FLASH, 1,
4531 [Define if your default avr linker script for avrxmega3 leaves .rodata in flash.])
4533 AC_MSG_RESULT(no: avrxmega3 .rodata located in RAM)
4534 echo "$as_me: nm output was" >&AS_MESSAGE_LOG_FD
4535 cat conftest.nm >&AS_MESSAGE_LOG_FD
4536 AC_MSG_WARN([[support for avrxmega3 .rodata in flash needs Binutils 2.29 or higher (have $avr_ld_ver)]])
4539 AC_MSG_RESULT(test failed)
4540 echo "$as_me: failed program was" >&AS_MESSAGE_LOG_FD
4541 cat conftest.s >&AS_MESSAGE_LOG_FD
4542 AC_MSG_WARN([[see `config.log' for details]])
4544 rm -f conftest.s conftest.o conftest.elf conftest.nm
4546 # Check for emulation avrxmega2_flmap.
4547 AC_MSG_CHECKING(binutils for avrxmega2_flmap support (PR31124))
4548 cat > conftest.s <<EOF
4549 .section .text,"ax",@progbits
4550 ldi r16, __flmap_value_with_lock
4552 AC_TRY_COMMAND([$gcc_cv_as -mmcu=avrxmega2 conftest.s -o conftest.o])
4553 AC_TRY_COMMAND([$gcc_cv_ld -mavrxmega2_flmap conftest.o -o conftest.elf])
4554 if test -s conftest.elf
4557 AC_DEFINE(HAVE_LD_AVR_AVRXMEGA2_FLMAP, 1,
4558 [Define if your linker supports emulation avrxmega2_flmap.])
4561 AC_MSG_WARN([[support for avrxmega2_flmap requires Binutils 2.42 or higher (have $avr_ld_ver)]])
4562 AC_MSG_WARN([[see `config.log' for details]])
4564 rm -f conftest.o conftest.elf
4566 # Check for emulation avrxmega4_flmap.
4567 AC_MSG_CHECKING(binutils for avrxmega4_flmap support (PR31124))
4568 AC_TRY_COMMAND([$gcc_cv_as -mmcu=avrxmega4 conftest.s -o conftest.o])
4569 AC_TRY_COMMAND([$gcc_cv_ld -mavrxmega4_flmap conftest.o -o conftest.elf])
4570 if test -s conftest.elf
4573 AC_DEFINE(HAVE_LD_AVR_AVRXMEGA4_FLMAP, 1,
4574 [Define if your linker supports emulation avrxmega4_flmap.])
4577 AC_MSG_WARN([[support for avrxmega4_flmap requires Binutils 2.42 or higher (have $avr_ld_ver)]])
4578 AC_MSG_WARN([[see `config.log' for details]])
4580 rm -f conftest.s conftest.o conftest.elf
4584 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
4585 gcc_cv_as_cris_no_mul_bug,
4586 [-no-mul-bug-abort], [.text],,
4587 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
4588 [Define if your assembler supports the -no-mul-bug-abort option.])])
4592 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,
4594 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
4595 [Define if your assembler supports -relax option.])])
4597 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
4598 gcc_cv_as_sparc_gotdata_op,
4605 sethi %gdop_hix22(foo), %g1
4606 xor %g1, %gdop_lox10(foo), %g1
4607 ld [[%l7 + %g1]], %g2, %gdop(foo)],
4608 [if test x$gcc_cv_ld != x \
4609 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4610 if test x$gcc_cv_objdump != x; then
4611 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
4612 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
4613 gcc_cv_as_sparc_gotdata_op=no
4615 gcc_cv_as_sparc_gotdata_op=yes
4620 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
4621 [Define if your assembler and linker support GOTDATA_OP relocs.])])
4623 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
4624 gcc_cv_as_sparc_ua_pcrel,
4632 .uaword %r_disp32(foo)],
4633 [if test x$gcc_cv_ld != x \
4634 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4635 gcc_cv_as_sparc_ua_pcrel=yes
4638 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
4639 [Define if your assembler and linker support unaligned PC relative relocs.])
4641 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
4642 gcc_cv_as_sparc_ua_pcrel_hidden,
4647 .uaword %r_disp32(foo)
4648 .byte 0x32, 0x33, 0x34
4653 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4654 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
4655 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
4656 | grep ' 31000000 07323334' > /dev/null 2>&1; then
4657 if $gcc_cv_objdump -R conftest 2> /dev/null \
4658 | grep 'DISP32' > /dev/null 2>&1; then
4661 gcc_cv_as_sparc_ua_pcrel_hidden=yes
4665 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
4666 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
4667 ]) # unaligned pcrel relocs
4669 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
4670 gcc_cv_as_sparc_offsetable_lo10,
4673 or %g1, %lo(ab) + 12, %g1
4674 or %g1, %lo(ab + 12), %g1],
4675 [if test x$gcc_cv_objdump != x \
4676 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
4677 | grep ' 82106000 82106000' > /dev/null 2>&1; then
4678 gcc_cv_as_sparc_offsetable_lo10=yes
4680 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
4681 [Define if your assembler supports offsetable %lo().])])
4683 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
4684 gcc_cv_as_sparc_fmaf,
4687 .register %g2, #scratch
4688 .register %g3, #scratch
4690 fmaddd %f0, %f2, %f4, %f6
4691 addxccc %g1, %g2, %g3
4692 fsrl32 %f2, %f4, %f8
4693 fnaddd %f10, %f12, %f14],,
4694 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
4695 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
4697 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
4698 gcc_cv_as_sparc_sparc4,
4701 .register %g2, #scratch
4702 .register %g3, #scratch
4705 1: cwbneg %g2, %g3, 1f
4708 aes_kexpand0 %f4, %f6, %f8
4709 des_round %f38, %f40, %f42, %f44
4710 camellia_f %f54, %f56, %f58, %f60
4711 kasumi_fi_xor %f46, %f48, %f50, %f52],,
4712 [AC_DEFINE(HAVE_AS_SPARC4, 1,
4713 [Define if your assembler supports SPARC4 instructions.])])
4715 gcc_GAS_CHECK_FEATURE([SPARC5 and VIS 4.0 instructions],
4716 gcc_cv_as_sparc_sparc5,
4719 .register %g2, #scratch
4720 .register %g3, #scratch
4723 fpadd8 %f0, %f2, %f4],,
4724 [AC_DEFINE(HAVE_AS_SPARC5_VIS4, 1,
4725 [Define if your assembler supports SPARC5 and VIS 4.0 instructions.])])
4727 gcc_GAS_CHECK_FEATURE([SPARC6 instructions],
4728 gcc_cv_as_sparc_sparc6,
4731 .register %g2, #scratch
4732 .register %g3, #scratch
4735 fpsll64x %f0, %f2, %f4],,
4736 [AC_DEFINE(HAVE_AS_SPARC6, 1,
4737 [Define if your assembler supports SPARC6 instructions.])])
4739 gcc_GAS_CHECK_FEATURE([LEON instructions],
4740 gcc_cv_as_sparc_leon,
4743 .register %g2, #scratch
4744 .register %g3, #scratch
4748 casa [[%g2]] 0xb, %g3, %g1],,
4749 [AC_DEFINE(HAVE_AS_LEON, 1,
4750 [Define if your assembler supports LEON instructions.])])
4754 i[34567]86-*-* | x86_64-*-*)
4758 # Full C++ conformance when using a shared libstdc++-v3 requires some
4759 # support from the Cygwin DLL, which in more recent versions exports
4760 # wrappers to aid in interposing and redirecting operators new, delete,
4761 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
4762 # are configuring for a version of Cygwin that exports the wrappers.
4763 if test x$host = x$target && test x$host_cpu = xi686; then
4764 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
4766 # Can't check presence of libc functions during cross-compile, so
4767 # we just have to assume we're building for an up-to-date target.
4768 gcc_ac_cygwin_dll_wrappers=yes
4770 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
4771 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
4772 [Define if you want to generate code by default that assumes that the
4773 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
4776 cygwin* | pe | mingw32*)
4777 # Recent binutils allows the three-operand form of ".comm" on PE. This
4778 # definition is used unconditionally to initialise the default state of
4779 # the target option variable that governs usage of the feature.
4780 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,,
4782 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
4783 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
4784 [Define if your assembler supports specifying the alignment
4785 of objects allocated using the GAS .comm command.])
4786 # Used for DWARF 2 in PE
4787 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
4788 gcc_cv_as_ix86_pe_secrel32,,
4793 [if test x$gcc_cv_ld != x \
4794 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
4795 gcc_cv_as_ix86_pe_secrel32=yes
4798 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
4799 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
4800 # Test if the assembler supports the extended form of the .section
4801 # directive that specifies section alignment. LTO support uses this,
4802 # but normally only after installation, so we warn but don't fail the
4803 # configure if LTO is enabled but the assembler does not support it.
4804 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
4805 -fatal-warnings,[.section lto_test,"dr0"])
4806 if test x$gcc_cv_as_section_has_align != xyes; then
4807 case ",$enable_languages," in
4809 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
4816 darwin2* | darwin19*)
4817 gcc_GAS_CHECK_FEATURE([llvm assembler x86-pad-for-align option],
4818 gcc_cv_as_mllvm_x86_pad_for_align,
4819 [-mllvm -x86-pad-for-align=false], [.text],,
4820 [AC_DEFINE(HAVE_AS_MLLVM_X86_PAD_FOR_ALIGN, 1,
4821 [Define if your macOS assembler supports -mllvm -x86-pad-for-align=false.])])
4825 gcc_GAS_CHECK_FEATURE([-xbrace_comment], gcc_cv_as_ix86_xbrace_comment,
4826 [-xbrace_comment=no], [.text],,
4827 [AC_DEFINE(HAVE_AS_XBRACE_COMMENT_OPTION, 1,
4828 [Define if your assembler supports -xbrace_comment option.])])
4830 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
4831 gcc_cv_as_ix86_filds,,
4832 [filds (%ebp); fists (%ebp)],,
4833 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
4834 [Define if your assembler uses filds and fists mnemonics.])])
4836 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
4837 gcc_cv_as_ix86_fildq,,
4838 [fildq (%ebp); fistpq (%ebp)],,
4839 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
4840 [Define if your assembler uses fildq and fistq mnemonics.])])
4842 gcc_GAS_CHECK_FEATURE([cmov syntax],
4843 gcc_cv_as_ix86_cmov_sun_syntax,,
4844 [cmovl.l %edx, %eax],,
4845 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
4846 [Define if your assembler supports the Sun syntax for cmov.])])
4848 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
4849 gcc_cv_as_ix86_ffreep,,
4851 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
4852 [Define if your assembler supports the ffreep mnemonic.])])
4854 gcc_GAS_CHECK_FEATURE([.quad directive],
4855 gcc_cv_as_ix86_quad,,
4857 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
4858 [Define if your assembler supports the .quad directive.])])
4860 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
4861 gcc_cv_as_ix86_sahf,,
4864 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
4865 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
4867 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
4868 gcc_cv_as_ix86_interunit_movq,,
4872 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
4873 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
4874 [Define if your assembler supports interunit movq mnemonic.])
4876 gcc_GAS_CHECK_FEATURE([hle prefixes],
4877 gcc_cv_as_ix86_hle,,
4878 [lock xacquire cmpxchg %esi, (%ecx)],,
4879 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
4880 [Define if your assembler supports HLE prefixes.])])
4882 gcc_GAS_CHECK_FEATURE([swap suffix],
4883 gcc_cv_as_ix86_swap,,
4884 [movl.s %esp, %ebp],,
4885 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
4886 [Define if your assembler supports the swap suffix.])])
4888 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
4889 gcc_cv_as_ix86_diff_sect_delta,,
4897 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
4898 [Define if your assembler supports the subtraction of symbols in different sections.])])
4900 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
4901 gcc_cv_as_ix86_rep_lock_prefix,,
4907 lock addl %edi, (%eax,%esi)
4908 lock orl $0, (%esp)],,
4909 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
4910 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
4912 gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
4913 gcc_cv_as_ix86_ud2,,
4915 [AC_DEFINE(HAVE_AS_IX86_UD2, 1,
4916 [Define if your assembler supports the 'ud2' mnemonic.])])
4918 # Enforce 32-bit output with gas and gld.
4919 if test x$gas = xyes; then
4920 as_ix86_gas_32_opt="--32"
4922 if echo "$ld_ver" | grep GNU > /dev/null; then
4923 if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then
4924 ld_ix86_gld_32_opt="-melf_i386_sol2"
4926 ld_ix86_gld_32_opt="-melf_i386"
4930 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
4931 gcc_cv_as_ix86_tlsgdplt,
4932 [$as_ix86_gas_32_opt],
4933 [call tls_gd@tlsgdplt],
4934 [if test x$gcc_cv_ld != x \
4935 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4936 gcc_cv_as_ix86_tlsgdplt=yes
4939 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
4940 [Define if your assembler and linker support @tlsgdplt.])])
4943 .section .tdata,"aw'$tls_section_flag'",@progbits
4945 .section .text,"ax",@progbits
4946 call tls_ld@tlsldmplt'
4948 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
4949 gcc_cv_as_ix86_tlsldmplt,
4950 [$as_ix86_gas_32_opt],
4952 [if test x$gcc_cv_ld != x \
4953 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4954 gcc_cv_as_ix86_tlsldmplt=yes
4957 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT,
4958 [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`],
4959 [Define to 1 if your assembler and linker support @tlsldmplt.])
4962 .section .text,"ax",@progbits
4964 .type _start, @function
4966 leal value@tlsldm(%ebx), %eax
4967 call ___tls_get_addr@plt
4969 .section .tdata,"aw'$tls_section_flag'",@progbits
4970 .type value, @object
4972 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc],
4973 gcc_cv_as_ix86_tlsldm,
4974 [$as_ix86_gas_32_opt],
4976 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4977 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then
4978 if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \
4979 || dis conftest 2>/dev/null | grep nop > /dev/null; then
4980 gcc_cv_as_ix86_tlsldm=yes
4984 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM,
4985 [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`],
4986 [Define to 1 if your assembler and linker support @tlsldm.])
4997 gcc_GAS_CHECK_FEATURE([R_386_GOT32X reloc],
4998 gcc_cv_as_ix86_got32x,
4999 [$as_ix86_gas_32_opt],
5001 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
5002 && test x$gcc_cv_readelf != x \
5003 && $gcc_cv_readelf --relocs --wide conftest.o 2>&1 \
5004 | grep R_386_GOT32X > /dev/null 2>&1 \
5005 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
5006 if $gcc_cv_objdump -dw conftest 2>&1 \
5007 | grep 0xffffff > /dev/null 2>&1; then
5008 gcc_cv_as_ix86_got32x=no
5010 gcc_cv_as_ix86_got32x=yes
5014 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_GOT32X,
5015 [`if test x"$gcc_cv_as_ix86_got32x" = xyes; then echo 1; else echo 0; fi`],
5016 [Define 0/1 if your assembler and linker support @GOT.])
5018 # Check if gas and gld support "addq %r23,foo@GOTTPOFF(%rip), %r15"
5019 # with R_X86_64_CODE_6_GOTTPOFF relocation.
5020 if echo "$ld_ver" | grep GNU > /dev/null; then
5021 if $gcc_cv_ld -V 2>/dev/null | grep elf_x86_64_sol2 > /dev/null; then
5022 ld_ix86_gld_64_opt="-melf_x86_64_sol2"
5024 ld_ix86_gld_64_opt="-melf_x86_64"
5027 # Enforce 64-bit output with gas and gld.
5028 if test x$gas = xyes; then
5029 as_ix86_gas_64_opt="--64"
5034 .type _start, @function
5036 addq %r23,foo@GOTTPOFF(%rip), %r15
5037 .section .tdata,"awT",@progbits
5041 gcc_GAS_CHECK_FEATURE([R_X86_64_CODE_6_GOTTPOFF reloc],
5042 gcc_cv_as_x86_64_code_6_gottpoff,
5043 [$as_ix86_gas_64_opt],
5045 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
5046 && test x$gcc_cv_readelf != x \
5047 && $gcc_cv_readelf --relocs --wide conftest.o 2>&1 \
5048 | grep R_X86_64_CODE_6_GOTTPOFF > /dev/null 2>&1 \
5049 && $gcc_cv_ld $ld_ix86_gld_64_opt -o conftest conftest.o > /dev/null 2>&1; then
5050 if $gcc_cv_objdump -dw conftest 2>&1 \
5051 | grep "add \+\$0xf\+8,%r23,%r15" > /dev/null 2>&1; then
5052 gcc_cv_as_x86_64_code_6_gottpoff=yes
5054 gcc_cv_as_x86_64_code_6_gottpoff=no
5058 AC_DEFINE_UNQUOTED(HAVE_AS_R_X86_64_CODE_6_GOTTPOFF,
5059 [`if test x"$gcc_cv_as_x86_64_code_6_gottpoff" = xyes; then echo 1; else echo 0; fi`],
5060 [Define 0/1 if your assembler and linker support R_X86_64_CODE_6_GOTTPOFF.])
5062 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
5063 gcc_cv_as_ix86_gotoff_in_data,
5064 [$as_ix86_gas_32_opt],
5070 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
5071 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
5072 [Define true if the assembler supports '.long foo@GOTOFF'.])
5075 .section .text,"ax",@progbits
5077 .type _start, @function
5079 leal ld@tlsldm(%ecx), %eax
5080 call *___tls_get_addr@GOT(%ecx)
5081 leal gd@tlsgd(%ecx), %eax
5082 call *___tls_get_addr@GOT(%ecx)
5084 .section .tdata,"aw'$tls_section_flag'",@progbits
5092 gcc_GAS_CHECK_FEATURE([calling ___tls_get_addr via GOT],
5093 gcc_cv_as_ix86_tls_get_addr_via_got,
5094 [$as_ix86_gas_32_opt],
5096 [if test x$gcc_cv_ld != x \
5097 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
5098 gcc_cv_as_ix86_tls_get_addr_via_got=yes
5101 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLS_GET_ADDR_GOT,
5102 [`if test x"$gcc_cv_as_ix86_tls_get_addr_via_got" = xyes; then echo 1; else echo 0; fi`],
5103 [Define 0/1 if your assembler and linker support calling ___tls_get_addr via GOT.])
5107 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
5108 gcc_cv_as_ia64_ltoffx_ldxmov_relocs,,
5110 addl r15 = @ltoffx(x#), gp
5112 ld8.mov r16 = [[r15]], x#
5114 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
5115 [Define if your assembler supports ltoffx and ldxmov relocations.])])
5123 gcc_GAS_CHECK_FEATURE([.machine directive support],
5124 gcc_cv_as_machine_directive,,
5125 [ .machine ppc7400])
5126 if test x$gcc_cv_as_machine_directive != xyes; then
5127 echo "*** This target requires an assembler supporting \".machine\"" >&2
5128 echo you can get it from: https://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
5129 test x$build = x$target && exit 1
5135 *-*-aix*) conftest_s=' .machine "pwr5"
5138 *-*-darwin*) conftest_s=' .text
5140 *) conftest_s=' .machine power4
5145 gcc_GAS_CHECK_FEATURE([mfcr field support],
5146 gcc_cv_as_powerpc_mfcrf,,
5148 [AC_DEFINE(HAVE_AS_MFCRF, 1,
5149 [Define if your assembler supports mfcr field.])])
5152 *-*-aix*) conftest_s=' .machine "pwr10"
5155 *-*-darwin*) conftest_s=' .text
5157 *) conftest_s=' .machine power10
5162 gcc_GAS_CHECK_FEATURE([htm support on Power10],
5163 gcc_cv_as_power10_htm,,
5165 [AC_DEFINE(HAVE_AS_POWER10_HTM, 1,
5166 [Define if your assembler supports htm insns on power10.])])
5169 *-*-aix*) conftest_s=' .csect .text[[PR]]
5171 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
5175 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
5176 *) conftest_s=' .text
5178 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
5181 gcc_GAS_CHECK_FEATURE([rel16 relocs],
5182 gcc_cv_as_powerpc_rel16, -a32,
5184 [AC_DEFINE(HAVE_AS_REL16, 1,
5185 [Define if your assembler supports R_PPC_REL16 relocs.])])
5188 *-*-aix*) conftest_s=' .machine "pwr7"
5191 *) conftest_s=' .machine power7
5196 gcc_GAS_CHECK_FEATURE([vector-scalar support],
5197 gcc_cv_as_powerpc_vsx, -a32,
5199 [AC_DEFINE(HAVE_AS_VSX, 1,
5200 [Define if your assembler supports VSX instructions.])])
5202 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5203 gcc_cv_as_powerpc_gnu_attribute,,
5204 [.gnu_attribute 4,1],,
5205 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5206 [Define if your assembler supports .gnu_attribute.])])
5208 gcc_GAS_CHECK_FEATURE([prologue entry point marker support],
5209 gcc_cv_as_powerpc_entry_markers,-a64 --fatal-warnings,
5210 [ .reloc .,R_PPC64_ENTRY; nop],,
5211 [AC_DEFINE(HAVE_AS_ENTRY_MARKERS, 1,
5212 [Define if your assembler supports the R_PPC64_ENTRY relocation.])])
5214 gcc_GAS_CHECK_FEATURE([plt sequence marker support],
5215 gcc_cv_as_powerpc_pltseq_markers,-a32 --fatal-warnings,
5216 [ .reloc .,R_PPC_PLTSEQ; nop],,
5217 [AC_DEFINE(HAVE_AS_PLTSEQ, 1,
5218 [Define if your assembler supports R_PPC*_PLTSEQ relocations.])])
5222 gcc_GAS_CHECK_FEATURE([AIX .ref support],
5224 [ .csect stuff[[rw]]
5230 [AC_DEFINE(HAVE_AS_REF, 1,
5231 [Define if your assembler supports .ref])])
5233 gcc_GAS_CHECK_FEATURE([AIX DWARF location lists section support],
5234 gcc_cv_as_aix_dwloc,,
5239 [AC_DEFINE(HAVE_XCOFF_DWARF_EXTRAS, 1,
5240 [Define if your assembler supports AIX debug frame section label reference.])])
5246 gcc_GAS_CHECK_FEATURE([explicit relocation support: %pcrel_hi/%pcrel_lo],
5247 gcc_cv_as_mips_explicit_relocs_pcrel,,
5248 [ lui $4,%pcrel_hi(foo)],,
5249 [AC_DEFINE(MIPS_EXPLICIT_RELOCS, MIPS_EXPLICIT_RELOCS_PCREL,
5250 [Define if assembler supports %pcrel_hi/%pcrel_lo.])])
5252 if test x$gcc_cv_as_mips_explicit_relocs_pcrel = xno; then \
5253 gcc_GAS_CHECK_FEATURE([explicit relocation support: %gp_rel],
5254 gcc_cv_as_mips_explicit_relocs,,
5255 [ lw $4,%gp_rel(foo)($4)],,
5256 [AC_DEFINE(MIPS_EXPLICIT_RELOCS, MIPS_EXPLICIT_RELOCS_BASE,
5257 [Define if assembler supports %reloc.])])
5260 if test x$gcc_cv_as_mips_explicit_relocs = xno; then \
5261 AC_DEFINE(MIPS_EXPLICIT_RELOCS, MIPS_EXPLICIT_RELOCS_NONE,
5262 [Define if assembler supports %reloc.])
5265 gcc_GAS_CHECK_FEATURE([-mno-shared support],
5266 gcc_cv_as_mips_no_shared,[-mno-shared], [nop],,
5267 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
5268 [Define if the assembler understands -mno-shared.])])
5270 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5271 gcc_cv_as_mips_gnu_attribute,,
5272 [.gnu_attribute 4,1],,
5273 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5274 [Define if your assembler supports .gnu_attribute.])])
5276 gcc_GAS_CHECK_FEATURE([.module support],
5277 gcc_cv_as_mips_dot_module,[-32],
5280 [AC_DEFINE(HAVE_AS_DOT_MODULE, 1,
5281 [Define if your assembler supports .module.])])
5282 if test x$gcc_cv_as_mips_dot_module = xno \
5283 && test x$with_fp_32 != x; then
5285 [Requesting --with-fp-32= requires assembler support for .module.])
5288 gcc_GAS_CHECK_FEATURE([.micromips support],
5289 gcc_cv_as_micromips_support,[--fatal-warnings],
5291 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
5292 [Define if your assembler supports the .set micromips directive])])
5294 gcc_GAS_CHECK_FEATURE([.dtprelword support],
5295 gcc_cv_as_mips_dtprelword,,
5296 [.section .tdata,"awT",@progbits
5300 .dtprelword x+0x8000],,
5301 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
5302 [Define if your assembler supports .dtprelword.])])
5304 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
5305 gcc_cv_as_mips_dspr1_mult,,
5315 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
5316 [Define if your assembler supports DSPR1 mult.])])
5318 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
5319 gcc_cv_as_ld_jalr_reloc=no
5320 if test $gcc_cv_as_mips_explicit_relocs = yes; then
5321 if test $in_tree_ld = yes ; then
5322 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
5323 && test $in_tree_ld_is_elf = yes; then
5324 gcc_cv_as_ld_jalr_reloc=yes
5326 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
5327 echo ' .ent x' > conftest.s
5328 echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s
5329 echo ' lw $25,%call16(y)($28)' >> conftest.s
5330 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
5331 echo '1: jalr $25' >> conftest.s
5332 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
5333 echo '1: jalr $25' >> conftest.s
5334 echo ' .end x' >> conftest.s
5335 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
5336 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
5337 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
5338 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
5339 gcc_cv_as_ld_jalr_reloc=yes
5345 if test $gcc_cv_as_ld_jalr_reloc = yes; then
5346 if test x$target_cpu_default = x; then
5347 target_cpu_default=MASK_RELAX_PIC_CALLS
5349 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
5352 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
5354 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
5355 [gcc_cv_ld_mips_personality_relaxation],
5356 [gcc_cv_ld_mips_personality_relaxation=no
5357 if test $in_tree_ld = yes ; then
5358 if test "$gcc_cv_gld_major_version" -eq 2 \
5359 -a "$gcc_cv_gld_minor_version" -ge 21 \
5360 -o "$gcc_cv_gld_major_version" -gt 2; then
5361 gcc_cv_ld_mips_personality_relaxation=yes
5363 elif test x$gcc_cv_as != x \
5364 -a x$gcc_cv_ld != x \
5365 -a x$gcc_cv_readelf != x ; then
5366 cat > conftest.s <<EOF
5368 .cfi_personality 0x80,indirect_ptr
5375 .section .data,"aw",@progbits
5379 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
5380 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
5381 if $gcc_cv_readelf -d conftest 2>&1 \
5382 | grep TEXTREL > /dev/null 2>&1; then
5384 elif $gcc_cv_readelf --relocs conftest 2>&1 \
5385 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
5388 gcc_cv_ld_mips_personality_relaxation=yes
5392 rm -f conftest.s conftest.o conftest])
5393 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
5394 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
5395 [Define if your linker can relax absolute .eh_frame personality
5396 pointers into PC-relative form.])
5399 gcc_GAS_CHECK_FEATURE([-mnan= support],
5402 [AC_DEFINE(HAVE_AS_NAN, 1,
5403 [Define if the assembler understands -mnan=.])])
5404 if test x$gcc_cv_as_mips_nan = xno \
5405 && test x$with_nan != x; then
5407 [Requesting --with-nan= requires assembler support for -mnan=])
5411 # Earlier GAS versions generically support .gnu_attribute, but the
5412 # msp430 assembler will not do anything with it.
5413 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5414 gcc_cv_as_msp430_gnu_attribute,,
5415 [.gnu_attribute 4,1],,
5416 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5417 [Define if your assembler supports .gnu_attribute.])])
5418 gcc_GAS_CHECK_FEATURE([.mspabi_attribute support],
5419 gcc_cv_as_msp430_mspabi_attribute,,
5420 [.mspabi_attribute 4,2],,
5421 [AC_DEFINE(HAVE_AS_MSPABI_ATTRIBUTE, 1,
5422 [Define if your assembler supports .mspabi_attribute.])])
5423 if test x$enable_newlib_nano_formatted_io = xyes; then
5424 AC_DEFINE(HAVE_NEWLIB_NANO_FORMATTED_IO, 1, [Define if GCC has been
5425 configured with --enable-newlib-nano-formatted-io.])
5429 # Versions 2.33 and earlier lacked support for the %gotoff relocation
5430 # syntax that is documented in the ABI specification.
5431 gcc_GAS_CHECK_FEATURE([support for %gotoff relocations in constant data],
5432 gcc_cv_as_nios2_gotoff_relocation,,
5435 .long %gotoff(foo)],,
5436 [AC_DEFINE(HAVE_AS_NIOS2_GOTOFF_RELOCATION, 1,
5437 [Define if your assembler supports %gotoff relocation syntax.])])
5440 gcc_GAS_CHECK_FEATURE([.attribute support],
5441 gcc_cv_as_riscv_attribute,,
5442 [.attribute stack_align,4],,
5443 [AC_DEFINE(HAVE_AS_RISCV_ATTRIBUTE, 1,
5444 [Define if your assembler supports .attribute.])])
5445 gcc_GAS_CHECK_FEATURE([-misa-spec= support],
5446 gcc_cv_as_riscv_isa_spec,
5448 [AC_DEFINE(HAVE_AS_MISA_SPEC, 1,
5449 [Define if the assembler understands -misa-spec=.])])
5450 gcc_GAS_CHECK_FEATURE([-march=rv32i_zifencei support],
5451 gcc_cv_as_riscv_march_zifencei,
5452 [-march=rv32i_zifencei2p0],,,
5453 [AC_DEFINE(HAVE_AS_MARCH_ZIFENCEI, 1,
5454 [Define if the assembler understands -march=rv*_zifencei.])])
5457 gcc_GAS_CHECK_FEATURE([.dtprelword support],
5458 gcc_cv_as_loongarch_dtprelword, [2,18,0],,
5459 [.section .tdata,"awT",@progbits
5463 .dtprelword x+0x8000],,
5464 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
5465 [Define if your assembler supports .dtprelword.])])
5466 gcc_GAS_CHECK_FEATURE([explicit relocation support],
5467 gcc_cv_as_loongarch_explicit_relocs,,
5468 [a:pcalau12i $t0,%pc_hi20(a)],,
5469 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
5470 [Define if your assembler supports explicit relocation.])])
5471 gcc_GAS_CHECK_FEATURE([call36 relocation support],
5472 gcc_cv_as_loongarch_call36,,
5473 [pcaddu18i $r1, %call36(a)
5475 [AC_DEFINE(HAVE_AS_SUPPORT_CALL36, 1,
5476 [Define if your assembler supports call36 relocation.])])
5477 gcc_GAS_CHECK_FEATURE([eh_frame pcrel encoding support],
5478 gcc_cv_as_loongarch_eh_frame_pcrel_encoding_support,,
5480 .cfi_personality 0x9b,a
5483 [AC_DEFINE(HAVE_AS_EH_FRAME_PCREL_ENCODING_SUPPORT, 1,
5484 [Define if your assembler supports eh_frame pcrel encoding.])])
5485 gcc_GAS_CHECK_FEATURE([-mrelax option], gcc_cv_as_loongarch_relax,
5486 [-mrelax], [.text],,
5487 [AC_DEFINE(HAVE_AS_MRELAX_OPTION, 1,
5488 [Define if your assembler supports -mrelax option.])])
5489 gcc_GAS_CHECK_FEATURE([conditional branch relaxation support],
5490 gcc_cv_as_loongarch_cond_branch_relax,
5497 [AC_DEFINE(HAVE_AS_COND_BRANCH_RELAXATION, 1,
5498 [Define if your assembler supports conditional branch relaxation.])])
5499 gcc_GAS_CHECK_FEATURE([tls le relaxation support],
5500 gcc_cv_as_loongarch_tls_le_relaxation_support,,
5501 [lu12i.w $t0,%le_hi20_r(a)],,
5502 [AC_DEFINE(HAVE_AS_TLS_LE_RELAXATION, 1,
5503 [Define if your assembler supports tls le relocation.])])
5506 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5507 gcc_cv_as_s390_gnu_attribute,,
5508 [.gnu_attribute 8,1],,
5509 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5510 [Define if your assembler supports .gnu_attribute.])])
5511 gcc_GAS_CHECK_FEATURE([.machine and .machinemode support],
5512 gcc_cv_as_s390_machine_machinemode,,
5517 [AC_DEFINE(HAVE_AS_MACHINE_MACHINEMODE, 1,
5518 [Define if your assembler supports .machine and .machinemode.])])
5519 gcc_GAS_CHECK_FEATURE([architecture modifiers support],
5520 gcc_cv_as_s390_architecture_modifiers,,
5521 [ .machine z13+vx ],,
5522 [AC_DEFINE(HAVE_AS_ARCHITECTURE_MODIFIERS, 1,
5523 [Define if your assembler supports architecture modifiers.])])
5524 gcc_GAS_CHECK_FEATURE([vector load/store alignment hints],
5525 gcc_cv_as_s390_vector_loadstore_alignment_hints,,
5526 [ vl %v24,0(%r15),3 ],,
5527 [AC_DEFINE(HAVE_AS_VECTOR_LOADSTORE_ALIGNMENT_HINTS, 1,
5528 [Define if your assembler supports vl/vst/vlm/vstm with an optional alignment hint argument.])])
5529 gcc_GAS_CHECK_FEATURE([vector load/store alignment hints on z13],
5530 gcc_cv_as_s390_vector_loadstore_alignment_hints_on_z13, [-mzarch -march=z13],
5531 [ vl %v24,0(%r15),3 ],,
5532 [AC_DEFINE(HAVE_AS_VECTOR_LOADSTORE_ALIGNMENT_HINTS_ON_Z13, 1,
5533 [Define if your assembler supports vl/vst/vlm/vstm with an optional alignment hint argument on z13.])])
5538 # Mips, LoongArch and HP-UX need the GNU assembler.
5539 # Linux on IA64 might be able to use the Intel assembler.
5542 mips*-*-* | loongarch*-*-* | *-*-hpux* )
5543 if test x$gas_flag = xyes \
5544 || test x"$host" != x"$build" \
5545 || test ! -x "$gcc_cv_as" \
5546 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
5549 echo "*** This configuration requires the GNU assembler" >&2
5555 # AMD GCN needs the LLVM assembler and linker.
5556 # Test that LLVM is at least 13.0.1.
5559 AC_MSG_CHECKING(llvm assembler version)
5560 gcc_cv_as_version="unknown"
5561 if test x$gcc_cv_as != x; then
5562 gcc_cv_as_version=`$gcc_cv_as --version 2>&1 | sed -ne '/version/s/.* \([[0-9]]\)/\1/p' || echo error`
5563 case "$gcc_cv_as_version" in
5564 13.0.[[1-9]]*) ;; # 13.0.1+
5565 13.[[1-9]]*) ;; # 13.1+
5566 1[[4-9]]*) ;; # 14..19
5567 [[2-9]][[0-9]]*) ;; # 20..99
5568 [[1-9]][[0-9]][[0-9]]*) ;; # 100+
5569 error) AC_MSG_ERROR([cannot determine LLVM version]) ;;
5570 *) AC_MSG_ERROR([LLVM 13.0.1 or later is required (found LLVM $gcc_cv_as_version)]) ;;
5573 AC_MSG_RESULT([$gcc_cv_as_version, ok])
5579 gcc_GAS_CHECK_FEATURE([assembler for arm accepts context-specific architecture extensions],
5580 gcc_cv_as_arm_option_extensions,
5581 [-march=armv8.1-m.main+mve],
5586 [AC_DEFINE(HAVE_GAS_ARM_EXTENDED_ARCH, 1,
5587 [Define if your Arm assembler permits context-specific feature extensions.])])
5590 # ??? Not all targets support dwarf2 debug_line, even within a version
5591 # of gas. Moreover, we need to emit a valid instruction to trigger any
5592 # info to the output file. So, as supported targets are added to gas 2.11,
5593 # add some instruction here to (also) show we expect this might work.
5594 # ??? Once 2.11 is released, probably need to add first known working
5595 # version to the per-target configury.
5597 aarch64 | alpha | arc | arm | avr | bfin | cris | csky | i386 | loongarch | m32c \
5598 | m68k | microblaze | mips | nds32 | nios2 | pa | riscv | rs6000 | score | sparc \
5599 | visium | xstormy16 | xtensa)
5609 if test x"$insn" != x; then
5611 .file 1 \"conftest.s\"
5614 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
5615 gcc_cv_as_dwarf2_debug_line,,
5617 [if test x$gcc_cv_objdump != x \
5618 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
5619 | grep debug_line > /dev/null 2>&1; then
5620 gcc_cv_as_dwarf2_debug_line=yes
5621 elif test x$gcc_cv_otool != x \
5622 && $gcc_cv_otool -l conftest.o 2> /dev/null \
5623 | grep debug_line > /dev/null 2>&1; then
5624 gcc_cv_as_dwarf2_debug_line=yes
5627 # The .debug_line file table must be in the exact order that
5628 # we specified the files, since these indices are also used
5629 # by DW_AT_decl_file. Approximate this test by testing if
5630 # the assembler bitches if the same index is assigned twice.
5631 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
5632 gcc_cv_as_dwarf2_file_buggy,,
5636 if test $gcc_cv_as_dwarf2_debug_line = yes \
5637 && test $gcc_cv_as_dwarf2_file_buggy = no; then
5638 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
5639 [Define if your assembler supports dwarf2 .file/.loc directives,
5640 and preserves file table indices exactly as given.])
5642 if test $gcc_cv_as_leb128 = yes; then
5644 .file 1 \"conftest.s\"
5645 .loc 1 3 0 view .LVU1
5651 gcc_GAS_CHECK_FEATURE([dwarf2 debug_view support],
5652 gcc_cv_as_dwarf2_debug_view,,
5654 [AC_DEFINE(HAVE_AS_DWARF2_DEBUG_VIEW, 1,
5655 [Define if your assembler supports views in dwarf2 .loc directives.])])
5659 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
5660 gcc_cv_as_gdwarf2_flag,
5661 [--gdwarf2], [$insn],,
5662 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
5663 [Define if your assembler supports the --gdwarf2 option.])])
5665 gcc_GAS_CHECK_FEATURE([--gdwarf-5 option],
5666 gcc_cv_as_gdwarf_5_flag,
5667 [--gdwarf-5], [$insn],
5668 [if test x$gcc_cv_objdump != x \
5669 && $gcc_cv_objdump -Wi conftest.o 2>&1 \
5670 | grep DW_TAG_compile_unit > /dev/null 2>&1; then
5671 gcc_cv_as_gdwarf_5_flag=yes;
5672 fi],[AC_DEFINE(HAVE_AS_GDWARF_5_DEBUG_FLAG, 1,
5673 [Define if your assembler supports the --gdwarf-5 option.])])
5676 win32 | pe | cygwin* | mingw32*)
5677 section_flags=\"dr\"
5678 function_type=".def foo; .scl 2; .type 32; .endef"
5681 section_flags=\"\",%progbits
5682 function_type=".type foo, %function"
5683 function_size=".size foo, .-foo";;
5685 dwarf4_debug_info_size=0x46
5686 dwarf4_high_pc_form=7
5687 dwarf4_debug_aranges_size=0x2c
5689 for dwarf4_addr_size in 8 4; do
5705 .section .debug_info,$section_flags
5707 .4byte $dwarf4_debug_info_size
5709 .4byte .Ldebug_abbrev0
5710 .byte 0x$dwarf4_addr_size
5712 .ascii \"GNU C17\\0\"
5716 .${dwarf4_addr_size}byte .Ltext0
5717 .${dwarf4_addr_size}byte .Letext0-.Ltext0
5718 .4byte .Ldebug_line0
5724 .${dwarf4_addr_size}byte .LFB0
5725 .${dwarf4_addr_size}byte .LFE0-.LFB0
5729 .section .debug_abbrev,$section_flags
5745 .byte 0x$dwarf4_high_pc_form
5766 .byte 0x$dwarf4_high_pc_form
5772 .section .debug_aranges,$section_flags
5773 .4byte $dwarf4_debug_aranges_size
5775 .4byte .Ldebug_info0
5780 .${dwarf4_addr_size}byte .Ltext0
5781 .${dwarf4_addr_size}byte .Letext0-.Ltext0
5782 .${dwarf4_addr_size}byte 0
5783 .${dwarf4_addr_size}byte 0
5784 .section .debug_line,$section_flags
5786 .4byte .LELT0-.LSLT0
5789 .4byte .LELTP0-.LASLTP0
5817 .byte 0x$dwarf4_line_sz
5819 .${dwarf4_addr_size}byte .LM1
5824 .byte 0x$dwarf4_line_sz
5826 .${dwarf4_addr_size}byte .LM2
5831 .byte 0x$dwarf4_line_sz
5833 .${dwarf4_addr_size}byte .Letext0
5838 .section .debug_str,$section_flags
5842 if test $dwarf4_addr_size = 4; then
5843 gcc_GAS_CHECK_FEATURE([assembly of compiler generated 32-bit .debug_line],
5844 gcc_cv_as_debug_line_32_flag,,
5846 [dwarf4_success=yes])
5848 gcc_GAS_CHECK_FEATURE([assembly of compiler generated 64-bit .debug_line],
5849 gcc_cv_as_debug_line_64_flag,,
5851 [dwarf4_success=yes])
5853 if test $dwarf4_success = yes; then
5855 gcc_GAS_CHECK_FEATURE([--gdwarf-4 not refusing compiler generated .debug_line],
5856 gcc_cv_as_dwarf_4_debug_line_flag,
5857 [--gdwarf-4], [$conftest_s],,
5858 [dwarf4_success=yes])
5861 dwarf4_debug_info_size=0x36
5862 dwarf4_high_pc_form=6
5863 dwarf4_debug_aranges_size=0x1c
5867 if test $dwarf4_success = yes; then
5885 gcc_GAS_CHECK_FEATURE([--gdwarf-4 with the APP marker],
5886 gcc_cv_as_dwarf_4_app_flag,
5887 [--gdwarf-4], [$conftest_s],, [dwarf4_success=yes])
5890 if test $dwarf4_success = yes; then
5900 gcc_GAS_CHECK_FEATURE([working --gdwarf-4/--gdwarf-5 for all sources],
5901 gcc_cv_as_working_gdwarf_n_flag,
5905 if test x$gcc_cv_objdump != x \
5906 && $gcc_cv_objdump -W conftest.o 2>&1 \
5907 | grep conftest.s > /dev/null 2>&1; then
5908 gcc_cv_as_working_gdwarf_n_flag=no
5910 gcc_cv_as_working_gdwarf_n_flag=yes
5912 changequote([,])dnl])
5913 if test $gcc_cv_as_working_gdwarf_n_flag = yes; then
5914 AC_DEFINE(HAVE_AS_WORKING_DWARF_N_FLAG, 1,
5915 [Define if your assembler supports --gdwarf-4/--gdwarf-5 even with
5916 compiler generated .debug_line.])
5920 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
5921 gcc_cv_as_debug_prefix_map_flag,
5922 [--debug-prefix-map /a=/b], [$insn],,
5923 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
5924 [Define if your assembler supports the --debug-prefix-map option.])])
5927 gcc_GAS_CHECK_FEATURE([compressed debug sections],
5928 gcc_cv_as_compress_debug,,,
5929 [# gas compiled without zlib cannot compress debug sections and warns
5930 # about it, but still exits successfully. So check for this, too.
5931 if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null
5933 gcc_cv_as_compress_debug=0
5934 elif $gcc_cv_as --compress-debug-sections=zlib -o conftest.o conftest.s > /dev/null 2>&1
5936 gcc_cv_as_compress_debug=1
5937 gcc_cv_as_compress_debug_option="--compress-debug-sections"
5938 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
5939 # Since binutils 2.40, gas supports --compress-debug-sections=zstd.
5940 if $gcc_cv_as --compress-debug-sections=zstd -o conftest.o conftest.s > /dev/null 2>&1
5942 gcc_cv_as_compress_debug=2
5945 gcc_cv_as_compress_debug=0
5947 AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug,
5948 [Define to the level of your assembler's compressed debug section support.])
5949 AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option",
5950 [Define to the assembler option to enable compressed debug sections.])
5951 AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option",
5952 [Define to the assembler option to disable compressed debug sections.])
5954 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,,
5956 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
5957 [Define if your assembler supports .lcomm with an alignment field.])])
5959 if test x$with_sysroot = x && test x$host = x$target \
5960 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
5961 && test "$prefix" != "NONE"; then
5962 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
5963 [Define to PREFIX/include if cpp should also search that directory.])
5966 # Determine the version of glibc, if any, used on the target.
5967 AC_MSG_CHECKING([for target glibc version])
5968 AC_ARG_WITH([glibc-version],
5969 [AS_HELP_STRING([--with-glibc-version=M.N],
5970 [assume GCC used with glibc version M.N or later])], [
5971 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
5972 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
5973 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
5975 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
5977 glibc_version_major=0
5978 glibc_version_minor=0
5979 [if test -f $target_header_dir/features.h \
5980 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
5981 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
5982 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
5983 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
5985 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
5986 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MAJOR], [$glibc_version_major],
5987 [GNU C Library major version number used on the target, or 0.])
5988 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MINOR], [$glibc_version_minor],
5989 [GNU C Library minor version number used on the target, or 0.])
5991 AC_ARG_ENABLE(gnu-unique-object,
5992 [AS_HELP_STRING([--enable-gnu-unique-object],
5993 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
5994 [case $enable_gnu_unique_object in
5996 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
5997 Valid choices are 'yes' and 'no'.]) ;;
5999 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,,
6000 [.type foo, '$target_type_format_char'gnu_unique_object],,
6001 # We need to unquote above to to use the definition from config.gcc.
6002 # Also check for ld.so support, i.e. glibc 2.11 or higher.
6003 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
6005 if test x$enable_gnu_unique_object = xyes; then
6006 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
6007 [Define if your assembler supports @gnu_unique_object.])
6010 AC_CACHE_CHECK([assembler for tolerance to line number 0],
6011 [gcc_cv_as_line_zero],
6012 [gcc_cv_as_line_zero=no
6013 if test "x$gcc_cv_as" != x; then
6014 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
6015 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
6016 test "x`cat conftest.out`" = x
6018 gcc_cv_as_line_zero=yes
6020 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
6021 cat conftest.s >&AS_MESSAGE_LOG_FD
6022 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
6023 cat conftest.out >&AS_MESSAGE_LOG_FD
6025 rm -f conftest.o conftest.s conftest.out
6027 if test "x$gcc_cv_as_line_zero" = xyes; then
6028 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
6029 [Define if the assembler won't complain about a line such as # 0 "" 2.])
6032 AC_MSG_CHECKING(support for thin archives)
6033 thin_archive_support=no
6034 echo 'int main (void) { return 0; }' > conftest.c
6035 if ($AR --version | sed 1q | grep "GNU ar" \
6036 && $CC $CFLAGS -c conftest.c \
6037 && $AR rcT conftest.a conftest.o \
6038 && $CC $CFLAGS $LDFLAGS -o conftest conftest.a) >/dev/null 2>&1; then
6039 thin_archive_support=yes
6041 rm -f conftest.c conftest.o conftest.a conftest
6042 AC_MSG_RESULT($thin_archive_support)
6043 AC_SUBST(thin_archive_support)
6045 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
6046 gcc_cv_ld_eh_frame_hdr=no
6047 if test $in_tree_ld = yes ; then
6048 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
6049 && test $in_tree_ld_is_elf = yes; then
6050 gcc_cv_ld_eh_frame_hdr=yes
6052 elif test x$gcc_cv_ld != x; then
6053 if echo "$ld_ver" | grep GNU > /dev/null; then
6054 # Check if linker supports --eh-frame-hdr option
6055 if $gcc_cv_ld --help 2>&1 | grep eh-frame-hdr > /dev/null; then
6056 gcc_cv_ld_eh_frame_hdr=yes
6061 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
6062 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
6063 gcc_cv_ld_eh_frame_hdr=yes
6069 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
6070 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
6071 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
6072 [Define if your linker supports .eh_frame_hdr.])
6074 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
6076 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
6077 gcc_cv_ld_eh_frame_ciev3=no
6078 if test $in_tree_ld = yes ; then
6079 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
6080 && test $in_tree_ld_is_elf = yes; then
6081 gcc_cv_ld_eh_frame_ciev3=yes
6083 elif test x$gcc_cv_ld != x; then
6084 if echo "$ld_ver" | grep GNU > /dev/null; then
6085 gcc_cv_ld_eh_frame_ciev3=yes
6086 if test 0"$ld_date" -lt 20040513; then
6087 if test -n "$ld_date"; then
6088 # If there was date string, but was earlier than 2004-05-13, fail
6089 gcc_cv_ld_eh_frame_ciev3=no
6090 elif test "$ld_vers_major" -lt 2; then
6091 gcc_cv_ld_eh_frame_ciev3=no
6092 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
6093 gcc_cv_ld_eh_frame_ciev3=no
6099 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
6100 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
6101 gcc_cv_ld_eh_frame_ciev3=yes
6107 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
6108 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
6109 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
6110 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
6112 AC_MSG_CHECKING(linker position independent executable support)
6114 if test $in_tree_ld = yes ; then
6116 # Full PIE support on Solaris was only introduced in gld 2.26.
6117 *-*-solaris2*) gcc_gld_pie_min_version=26 ;;
6118 *) gcc_gld_pie_min_version=15 ;;
6120 if test "$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 \
6121 && test $in_tree_ld_is_elf = yes; then
6124 elif test x$gcc_cv_ld != x; then
6125 # Check if linker supports -pie option
6126 if $gcc_cv_ld --help 2>&1 | grep -- -pie > /dev/null; then
6130 if echo "$ld_ver" | grep GNU > /dev/null \
6131 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
6138 *-*-solaris2.1[[1-9]]*)
6139 # Solaris 11.3 added PIE support.
6140 if $gcc_cv_ld -z help 2>&1 | grep -- type.*pie > /dev/null; then
6147 if test x"$gcc_cv_ld_pie" = xyes; then
6148 AC_DEFINE(HAVE_LD_PIE, 1,
6149 [Define if your linker supports PIE option.])
6151 AC_MSG_RESULT($gcc_cv_ld_pie)
6153 AC_MSG_CHECKING(linker PIE support with copy reloc)
6154 gcc_cv_ld_pie_copyreloc=no
6155 if test $gcc_cv_ld_pie = yes ; then
6156 if test $in_tree_ld = yes ; then
6157 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6158 gcc_cv_ld_pie_copyreloc=yes
6160 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6161 # Check if linker supports -pie option with copy reloc
6163 i?86-*-linux* | x86_64-*-linux*)
6164 cat > conftest1.s <<EOF
6167 .type a_glob, @object
6172 cat > conftest2.s <<EOF
6175 .type main, @function
6177 movl %eax, a_glob(%rip)
6180 .section .data.rel,"aw",@progbits
6185 if $gcc_cv_as --64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
6186 && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \
6187 && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
6188 && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then
6189 gcc_cv_ld_pie_copyreloc=yes
6191 rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s
6196 AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC,
6197 [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`],
6198 [Define 0/1 if your linker supports -pie option with copy reloc.])
6199 AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc)
6201 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
6202 gcc_cv_ld_eh_gc_sections=no
6203 if test $in_tree_ld = yes ; then
6204 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
6205 && test $in_tree_ld_is_elf = yes; then
6206 gcc_cv_ld_eh_gc_sections=yes
6208 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
6209 cat > conftest.s <<EOF
6212 .type _start, @function
6215 .size _start, .-_start
6216 .section .text.foo,"ax",@progbits
6217 .type foo, @function
6221 .section .gcc_except_table.foo,"a",@progbits
6224 .section .eh_frame,"a",@progbits
6227 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
6228 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
6229 | grep "gc-sections option ignored" > /dev/null; then
6230 gcc_cv_ld_eh_gc_sections=no
6231 elif $gcc_cv_objdump -h conftest 2> /dev/null \
6232 | grep gcc_except_table > /dev/null; then
6233 gcc_cv_ld_eh_gc_sections=yes
6234 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
6235 if test x$gcc_cv_as_comdat_group != xyes; then
6236 gcc_cv_ld_eh_gc_sections=no
6237 cat > conftest.s <<EOF
6240 .type _start, @function
6243 .size _start, .-_start
6244 .section .gnu.linkonce.t.foo,"ax",@progbits
6245 .type foo, @function
6249 .section .gcc_except_table.foo,"a",@progbits
6252 .section .eh_frame,"a",@progbits
6255 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
6256 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
6257 | grep "gc-sections option ignored" > /dev/null; then
6258 gcc_cv_ld_eh_gc_sections=no
6259 elif $gcc_cv_objdump -h conftest 2> /dev/null \
6260 | grep gcc_except_table > /dev/null; then
6261 gcc_cv_ld_eh_gc_sections=yes
6267 rm -f conftest.s conftest.o conftest
6271 # ??? This apparently exposes a binutils bug with PC-relative relocations.
6272 gcc_cv_ld_eh_gc_sections=no
6275 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
6276 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
6277 [Define if your linker supports garbage collection of
6278 sections in presence of EH frames.])
6280 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
6282 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
6283 gcc_cv_ld_eh_gc_sections_bug=no
6284 if test $in_tree_ld = yes ; then
6285 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
6286 && test $in_tree_ld_is_elf = yes; then
6287 gcc_cv_ld_eh_gc_sections_bug=yes
6289 elif test x$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
6290 gcc_cv_ld_eh_gc_sections_bug=yes
6291 cat > conftest.s <<EOF
6294 .type _start, @function
6297 .size _start, .-_start
6298 .section .text.startup.foo,"ax",@progbits
6299 .type foo, @function
6303 .section .gcc_except_table.foo,"a",@progbits
6306 .section .eh_frame,"a",@progbits
6309 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
6310 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
6311 | grep "gc-sections option ignored" > /dev/null; then
6313 elif $gcc_cv_objdump -h conftest 2> /dev/null \
6314 | grep gcc_except_table > /dev/null; then
6315 gcc_cv_ld_eh_gc_sections_bug=no
6318 rm -f conftest.s conftest.o conftest
6320 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
6321 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
6322 [Define if your linker has buggy garbage collection of
6323 sections support when .text.startup.foo like sections are used.])
6325 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
6327 AC_MSG_CHECKING(linker for compressed debug sections)
6328 # GNU ld/gold support --compressed-debug-sections=zlib since binutils 2.26.
6329 if $gcc_cv_ld --help 2>&1 | grep -- '--compress-debug-sections.*\<zlib-gabi\>' > /dev/null; then
6330 gcc_cv_ld_compress_debug=1
6331 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
6332 # Detect zstd debug section compression support
6333 if $gcc_cv_ld --help 2>&1 | grep -- '--compress-debug-sections.*\<zstd\>' > /dev/null; then
6334 gcc_cv_ld_compress_debug=2
6340 # Introduced in Solaris 11.2.
6341 if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then
6342 gcc_cv_ld_compress_debug=1
6343 gcc_cv_ld_compress_debug_option="-z compress-sections"
6345 gcc_cv_ld_compress_debug=0
6349 # Assume linkers other than GNU ld don't support compessed debug
6351 gcc_cv_ld_compress_debug=0
6356 AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug,
6357 [Define to the level of your linker's compressed debug section support.])
6358 AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option",
6359 [Define to the linker option to enable compressed debug sections.])
6360 AC_MSG_RESULT($gcc_cv_ld_compress_debug)
6362 if test x"$ld64_flag" = x"yes"; then
6364 # Set defaults for possibly untestable items.
6365 gcc_cv_ld64_export_dynamic=0
6366 gcc_cv_ld64_platform_version=0
6367 gcc_cv_ld64_demangle=0
6369 if test "$build" = "$host"; then
6375 # On Darwin, because of FAT library support, it is often possible to execute
6376 # exes from compatible archs even when the host differs from the build system.
6377 case "$build","$host" in
6378 x86_64-*-darwin*,i?86-*-darwin* | powerpc64*-*-darwin*,powerpc*-*-darwin*)
6383 # If the configurer specified a minimum ld64 version to be supported, then use
6384 # that to determine feature support.
6385 if test x"${gcc_cv_ld64_version}" != x; then
6386 AC_MSG_CHECKING(ld64 specified version)
6387 gcc_cv_ld64_major=`echo "$gcc_cv_ld64_version" | sed -e 's/\..*//'`
6388 AC_MSG_RESULT($gcc_cv_ld64_major)
6389 if test "$gcc_cv_ld64_major" -ge 97; then
6390 gcc_cv_ld64_demangle=1
6392 if test "$gcc_cv_ld64_major" -ge 236; then
6393 gcc_cv_ld64_export_dynamic=1
6395 if test "$gcc_cv_ld64_major" -ge 512; then
6396 gcc_cv_ld64_platform_version=1
6398 elif test -x "$gcc_cv_ld" -a "$darwin_try_test" -eq 1; then
6399 # If the version was not specified, try to find it.
6400 AC_MSG_CHECKING(linker version)
6401 if test x"${gcc_cv_ld64_version}" = x; then
6402 gcc_cv_ld64_version=`$gcc_cv_ld -v 2>&1 | $EGREP 'ld64|dyld' \
6403 | sed -e 's/.*ld64-//' -e 's/.*dyld-//'| awk '{print $1}'`
6405 AC_MSG_RESULT($gcc_cv_ld64_version)
6407 AC_MSG_CHECKING(linker for -demangle support)
6408 gcc_cv_ld64_demangle=1
6409 if $gcc_cv_ld -demangle < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then
6410 gcc_cv_ld64_demangle=0
6412 AC_MSG_RESULT($gcc_cv_ld64_demangle)
6414 AC_MSG_CHECKING(linker for -export_dynamic support)
6415 gcc_cv_ld64_export_dynamic=1
6416 if $gcc_cv_ld -export_dynamic < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then
6417 gcc_cv_ld64_export_dynamic=0
6419 AC_MSG_RESULT($gcc_cv_ld64_export_dynamic)
6421 AC_MSG_CHECKING(linker for -platform_version support)
6422 gcc_cv_ld64_platform_version=1
6423 if $gcc_cv_ld -platform_version macos 10.5 0.0 < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then
6424 gcc_cv_ld64_platform_version=0
6426 AC_MSG_RESULT($gcc_cv_ld64_platform_version)
6429 if test x"${gcc_cv_ld64_version}" != x; then
6430 AC_DEFINE_UNQUOTED(LD64_VERSION, "${gcc_cv_ld64_version}",
6431 [Define to ld64 version.])
6434 AC_DEFINE_UNQUOTED(LD64_HAS_DEMANGLE, $gcc_cv_ld64_demangle,
6435 [Define to 1 if ld64 supports '-demangle'.])
6437 AC_DEFINE_UNQUOTED(LD64_HAS_EXPORT_DYNAMIC, $gcc_cv_ld64_export_dynamic,
6438 [Define to 1 if ld64 supports '-export_dynamic'.])
6440 AC_DEFINE_UNQUOTED(LD64_HAS_PLATFORM_VERSION, $gcc_cv_ld64_platform_version,
6441 [Define to 1 if ld64 supports '-platform_version'.])
6444 if test x"$dsymutil_flag" = x"yes"; then
6446 # If the user specified a dsymutil path, then we will already have the
6447 # version string, otherwise, pick it up.
6448 if test x"$gcc_cv_dsymutil" = x; then
6449 AC_MSG_WARN([dsymutil is a required tool for this system, but not found])
6450 dsymutil_vers="tool unspecified"
6451 elif test x"$dsymutil_vers" = x; then
6452 dsymutil_vers=`$gcc_cv_dsymutil -v /dev/null 2>&1`
6455 dsymutil_temp=`echo $dsymutil_vers | sed 1q`
6456 AC_MSG_CHECKING(dsymutil version "$dsymutil_temp")
6457 if echo $dsymutil_temp | grep dwarfutils- > /dev/null; then
6458 dsymutil_kind=DWARFUTILS
6459 dsymutil_vers=`echo $dsymutil_temp | sed 's/.*dwarfutils-\([[0-9\.]]*\).*/\1/'`
6460 elif echo $dsymutil_temp | grep clang- > /dev/null; then
6462 dsymutil_vers=`echo $dsymutil_temp | sed 's/.*clang-\([[0-9\.]]*\).*/\1/'`
6463 elif echo $dsymutil_temp | grep 'LLVM version ' > /dev/null; then
6465 dsymutil_vers=`echo $dsymutil_temp | sed 's/.*LLVM\ version\ \([[0-9\.]]*\).*/\1/'`
6467 dsymutil_kind=DET_UNKNOWN
6470 dsymutil_major=`expr "$dsymutil_vers" : '\([[0-9]]*\)'`
6471 dsymutil_minor=`expr "$dsymutil_vers" : '[[0-9]]*\.\([[0-9]]*\)'`
6472 dsymutil_tiny=`expr "$dsymutil_vers" : '[[0-9]]*\.[[0-9]]*\.\([[0-9]]*\)'`
6473 if test x"${dsymutil_minor}" = x; then
6476 if test x"${dsymutil_tiny}" = x; then
6479 AC_DEFINE_UNQUOTED(DSYMUTIL_VERSION, [$dsymutil_kind,${dsymutil_major},${dsymutil_minor},${dsymutil_tiny}],
6480 [Define to the dsymutil version.])
6481 AC_MSG_RESULT($dsymutil_vers : $dsymutil_kind ${dsymutil_major} ${dsymutil_minor} ${dsymutil_tiny} )
6485 win32 | pe | cygwin* | mingw32*)
6486 AC_MSG_CHECKING(broken PE linker dwarf5 support)
6487 gcc_cv_ld_broken_pe_dwarf5=yes
6488 if test $in_tree_ld = yes ; then
6489 if grep -q '\.debug_loclists.*BLOCK.*__section_alignment__.*NOLOAD.*:' \
6490 $gcc_cv_ld_gld_srcdir/scripttempl/pe*.sc \
6491 && grep -q '\.debug_rnglists.*BLOCK.*__section_alignment__.*NOLOAD.*:' \
6492 $gcc_cv_ld_gld_srcdir/scripttempl/pe*.sc; then
6493 gcc_cv_ld_broken_pe_dwarf5=no
6496 if $gcc_cv_ld --verbose 2>&1 | grep -q '\.debug_loclists.*BLOCK.*__section_alignment__.*NOLOAD.*:' \
6497 && $gcc_cv_ld --verbose 2>&1 | grep -q '\.debug_rnglists.*BLOCK.*__section_alignment__.*NOLOAD.*:'; then
6498 gcc_cv_ld_broken_pe_dwarf5=no
6501 if test x$gcc_cv_ld_broken_pe_dwarf5 = xyes; then
6502 AC_DEFINE(HAVE_LD_BROKEN_PE_DWARF5, 1,
6503 [Define if the PE linker has broken DWARF 5 support.])
6505 AC_MSG_RESULT($gcc_cv_ld_broken_pe_dwarf5)
6507 AC_MSG_CHECKING(PE linker --disable-dynamicbase support)
6508 gcc_cv_ld_disable_dynamicbase=no
6509 if test $in_tree_ld = yes; then
6510 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 36 -o "$gcc_cv_gld_major_version" -gt 2; then \
6511 gcc_cv_ld_disable_dynamicbase=yes
6514 if $gcc_cv_ld --help 2>&1 | grep -q 'disable\-]dynamicbase' > /dev/null; then
6515 gcc_cv_ld_disable_dynamicbase=yes
6518 if test x"$gcc_cv_ld_disable_dynamicbase" = xyes; then
6519 AC_DEFINE(HAVE_LD_PE_DISABLE_DYNAMICBASE, 1,
6520 [Define if the PE linker supports --disable-dynamicbase option.])
6522 AC_MSG_RESULT($gcc_cv_ld_disable_dynamicbase)
6530 AC_CACHE_CHECK(linker --as-needed support,
6531 gcc_cv_ld_as_needed,
6532 [gcc_cv_ld_as_needed=no
6533 gcc_cv_ld_as_needed_option='--as-needed'
6534 gcc_cv_ld_no_as_needed_option='--no-as-needed'
6535 if test $in_tree_ld = yes ; then
6536 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
6537 && test $in_tree_ld_is_elf = yes; then
6538 gcc_cv_ld_as_needed=yes
6539 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 28; then
6540 gcc_cv_ld_as_needed_option='--push-state --as-needed'
6541 gcc_cv_ld_no_as_needed_option='--pop-state'
6544 elif test x$gcc_cv_ld != x; then
6545 # Check if linker supports --as-needed and --no-as-needed options
6546 if $gcc_cv_ld --help 2>&1 | grep as-needed > /dev/null; then
6547 gcc_cv_ld_as_needed=yes
6548 if $gcc_cv_ld --help 2>&1 | grep push-state > /dev/null \
6549 && $gcc_cv_ld --help 2>&1 | grep pop-state > /dev/null \
6550 && echo "$ld_ver" | grep GNU > /dev/null \
6551 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 28; then
6552 # Use these options only when both ld.bfd and ld.gold support
6553 # --push-state/--pop-state, which unfortunately wasn't added
6555 gcc_cv_ld_as_needed_option='--push-state --as-needed'
6556 gcc_cv_ld_no_as_needed_option='--pop-state'
6559 case "$target:$gnu_ld" in
6561 # Solaris 2 ld always supports -z ignore/-z record. Prefer the native
6563 gcc_cv_ld_as_needed=yes
6564 gcc_cv_ld_as_needed_option="-z ignore"
6565 gcc_cv_ld_no_as_needed_option="-z record"
6569 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
6570 # dl_iterate_phdr, i.e. since Solaris 11.
6572 *-*-solaris2.1[[1-9]]*)
6574 i?86-*-* | x86_64-*-*)
6575 if echo "$ld_ver" | grep GNU > /dev/null; then
6576 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
6577 gcc_cv_ld_as_needed=no
6583 gcc_cv_ld_as_needed=no
6587 if test x"$gcc_cv_ld_as_needed" = xyes; then
6588 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
6589 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
6590 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
6591 [Define to the linker option to ignore unused dependencies.])
6592 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
6593 [Define to the linker option to keep unused dependencies.])
6596 AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities)
6597 saved_LDFLAGS="$LDFLAGS"
6598 for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do
6599 LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map"
6600 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
6601 [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no])
6603 LDFLAGS="$saved_LDFLAGS"
6604 if test "x$gcc_cv_ld_clearcap" = xyes; then
6605 AC_DEFINE([HAVE_LD_CLEARCAP], 1,
6606 [Define if the linker supports clearing hardware capabilities via mapfile.])
6607 AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map])
6609 AC_MSG_RESULT($gcc_cv_ld_clearcap)
6615 emul_name="-melf32lppc"
6618 emul_name="-melf32ppc"
6621 AC_CACHE_CHECK(linker .gnu.attributes long double support,
6623 [gcc_cv_ld_ppc_attr=no
6624 if test x"$ld_is_gold" = xyes; then
6625 gcc_cv_ld_ppc_attr=yes
6626 elif test $in_tree_ld = yes ; then
6627 if test "$gcc_cv_gld_major_version" -eq 2 \
6628 -a "$gcc_cv_gld_minor_version" -ge 28 \
6629 -o "$gcc_cv_gld_major_version" -gt 2; then
6630 gcc_cv_ld_ppc_attr=yes
6632 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6633 # check that merging the long double .gnu_attribute doesn't warn
6634 cat > conftest1.s <<EOF
6637 cat > conftest2.s <<EOF
6640 if $gcc_cv_as -a32 -o conftest1.o conftest1.s > /dev/null 2>&1 \
6641 && $gcc_cv_as -a32 -o conftest2.o conftest2.s > /dev/null 2>&1 \
6642 && $gcc_cv_ld $emul_name -r -o conftest.o conftest1.o conftest2.o > /dev/null 2> conftest.err \
6643 && test ! -s conftest.err; then
6644 gcc_cv_ld_ppc_attr=yes
6646 rm -f conftest.err conftest.o conftest1.o conftest2.o conftest1.s conftest2.s
6649 if test x$gcc_cv_ld_ppc_attr = xyes; then
6650 AC_DEFINE(HAVE_LD_PPC_GNU_ATTR_LONG_DOUBLE, 1,
6651 [Define if your PowerPC linker has .gnu.attributes long double support.])
6656 case "$target:$tm_file" in
6657 powerpc64*-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
6660 emul_name="-melf64lppc"
6663 emul_name="-melf64ppc"
6666 emul_name="-melf64lppc_fbsd"
6669 emul_name="-melf64ppc_fbsd"
6672 AC_CACHE_CHECK(linker support for omitting dot symbols,
6673 gcc_cv_ld_no_dot_syms,
6674 [gcc_cv_ld_no_dot_syms=no
6675 if test x"$ld_is_gold" = xyes; then
6676 gcc_cv_ld_no_dot_syms=yes
6677 elif test $in_tree_ld = yes ; then
6678 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
6679 gcc_cv_ld_no_dot_syms=yes
6681 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6682 cat > conftest1.s <<EOF
6686 cat > conftest2.s <<EOF
6687 .section ".opd","aw"
6692 .quad .LEfoo,.TOC.@tocbase,0
6698 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
6699 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
6700 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
6701 gcc_cv_ld_no_dot_syms=yes
6703 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
6706 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
6707 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
6708 [Define if your PowerPC64 linker only needs function descriptor syms.])
6711 AC_CACHE_CHECK(linker large toc support,
6712 gcc_cv_ld_large_toc,
6713 [gcc_cv_ld_large_toc=no
6714 if test x"$ld_is_gold" = xyes; then
6715 gcc_cv_ld_large_toc=yes
6716 elif test $in_tree_ld = yes ; then
6717 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
6718 gcc_cv_ld_large_toc=yes
6720 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6721 cat > conftest.s <<EOF
6722 .section ".tbss","awT",@nobits
6728 addis 9,13,ie0@got@tprel@ha
6729 ld 9,ie0@got@tprel@l(9)
6731 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
6732 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
6733 gcc_cv_ld_large_toc=yes
6735 rm -f conftest conftest.o conftest.s
6738 if test x"$gcc_cv_ld_large_toc" = xyes; then
6739 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
6740 [Define if your PowerPC64 linker supports a large TOC.])
6743 AC_CACHE_CHECK(linker toc pointer alignment,
6744 gcc_cv_ld_toc_align,
6745 [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then
6746 cat > conftest.s <<EOF
6751 .section .data.rel.ro,"aw",@progbits
6756 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
6757 && $gcc_cv_ld $emul_name -z norelro -o conftest conftest.o > /dev/null 2>&1; then
6758 gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'`
6760 rm -f conftest conftest.o conftest.s
6763 if test -n "$gcc_cv_ld_toc_align" && test $gcc_cv_ld_toc_align -gt 8; then
6764 AC_DEFINE_UNQUOTED(POWERPC64_TOC_POINTER_ALIGNMENT, $gcc_cv_ld_toc_align,
6765 [Define to .TOC. alignment forced by your linker.])
6772 AC_CACHE_CHECK(linker large toc support,
6773 gcc_cv_ld_large_toc,
6774 [gcc_cv_ld_large_toc=no
6775 if test x$gcc_cv_as != x ; then
6776 cat > conftest.s <<EOF
6786 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
6787 gcc_cv_ld_large_toc=yes
6789 rm -f conftest conftest.o conftest.s
6792 if test x"$gcc_cv_ld_large_toc" = xyes; then
6793 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
6794 [Define if your PowerPC64 linker supports a large TOC.])
6799 AC_CACHE_CHECK(linker --build-id support,
6801 [gcc_cv_ld_buildid=no
6802 if test $in_tree_ld = yes ; then
6803 if test "$gcc_cv_gld_major_version" -eq 2 -a \
6804 "$gcc_cv_gld_minor_version" -ge 18 -o \
6805 "$gcc_cv_gld_major_version" -gt 2 \
6806 && test $in_tree_ld_is_elf = yes; then
6807 gcc_cv_ld_buildid=yes
6809 elif test x$gcc_cv_ld != x; then
6810 if $gcc_cv_ld --help 2>&1 | grep build-id > /dev/null; then
6811 gcc_cv_ld_buildid=yes
6814 if test x"$gcc_cv_ld_buildid" = xyes; then
6815 AC_DEFINE(HAVE_LD_BUILDID, 1,
6816 [Define if your linker supports --build-id.])
6819 AC_ARG_ENABLE(linker-build-id,
6820 [AS_HELP_STRING([--enable-linker-build-id],
6821 [compiler will always pass --build-id to linker])],
6823 enable_linker_build_id=no)
6825 if test x"$enable_linker_build_id" = xyes; then
6826 if test x"$gcc_cv_ld_buildid" = xyes; then
6827 AC_DEFINE(ENABLE_LD_BUILDID, 1,
6828 [Define if gcc should always pass --build-id to linker.])
6830 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
6834 # In binutils 2.21, GNU ld gained support for new emulations fully
6835 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
6836 AC_CACHE_CHECK(linker *_sol2 emulation support,
6837 gcc_cv_ld_sol2_emulation,
6838 [gcc_cv_ld_sol2_emulation=no
6839 if test $in_tree_ld = yes ; then
6840 if test "$gcc_cv_gld_major_version" -eq 2 -a \
6841 "$gcc_cv_gld_minor_version" -ge 21 -o \
6842 "$gcc_cv_gld_major_version" -gt 2 \
6843 && test $in_tree_ld_is_elf = yes; then
6844 gcc_cv_ld_sol2_emulation=yes
6846 elif test x$gcc_cv_ld != x; then
6847 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
6848 grep _sol2 > /dev/null; then
6849 gcc_cv_ld_sol2_emulation=yes
6852 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
6853 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
6854 [Define if your linker supports the *_sol2 emulations.])
6857 AC_CACHE_CHECK(linker --sysroot support,
6859 [gcc_cv_ld_sysroot=no
6860 if test $in_tree_ld = yes ; then
6861 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
6862 gcc_cv_ld_sysroot=yes
6864 elif test x$gcc_cv_ld != x; then
6865 if $gcc_cv_ld --help 2>&1 | grep sysroot > /dev/null; then
6866 gcc_cv_ld_sysroot=yes
6869 if test x"$gcc_cv_ld_sysroot" = xyes; then
6870 AC_DEFINE(HAVE_LD_SYSROOT, 1,
6871 [Define if your linker supports --sysroot.])
6876 # Check for system-provided CRTs on Solaris 11.x and Solaris 12.
6877 AC_CACHE_CHECK([system-provided CRTs on Solaris],
6878 gcc_cv_solaris_crts,
6879 [gcc_cv_solaris_crts=no
6880 if test x$host != x$target; then
6881 if test "x$with_sysroot" = xyes; then
6882 target_sysroot="${test_exec_prefix}/${target_noncanonical}/sys-root"
6884 target_sysroot="${with_sysroot}"
6887 target_libdir="$target_sysroot/usr/lib"
6888 # At the time they were added, gcrt1.o became a symlink for backwards
6889 # compatibility on x86, while crt1.o was added on sparc, so check for that.
6891 i?86-*-solaris2* | x86_64-*-solaris2*)
6892 if test -h "$target_libdir/gcrt1.o"; then gcc_cv_solaris_crts=yes; fi
6895 if test -f "$target_libdir/crt1.o"; then gcc_cv_solaris_crts=yes; fi
6900 if test x$gcc_cv_solaris_crts = xyes; then
6901 AC_DEFINE(HAVE_SOLARIS_CRTS, 1,
6902 [Define if the system-provided CRTs are present on Solaris.])
6905 AC_ARG_ENABLE(libssp,
6906 [AS_HELP_STRING([--enable-libssp], [enable linking against libssp])],
6907 [case "${enableval}" in
6911 AC_MSG_ERROR([unknown libssp setting $enableval])
6915 # Test for stack protector support in target C library.
6916 AC_CACHE_CHECK(__stack_chk_fail in target C library,
6917 gcc_cv_libc_provides_ssp,
6918 [gcc_cv_libc_provides_ssp=no
6919 if test "x$enable_libssp" = "xno"; then
6920 gcc_cv_libc_provides_ssp=yes
6921 elif test "x$enable_libssp" = "xyes"; then
6922 gcc_cv_libc_provides_ssp=no
6926 # All versions of musl provide stack protector
6927 gcc_cv_libc_provides_ssp=yes;;
6928 *-*-linux* | *-*-kfreebsd*-gnu)
6929 # glibc 2.4 and later provides __stack_chk_fail and
6930 # either __stack_chk_guard, or TLS access to stack guard canary.
6931 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
6932 [if test -f $target_header_dir/features.h \
6933 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
6934 $target_header_dir/features.h > /dev/null; then
6935 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
6936 $target_header_dir/features.h > /dev/null && \
6937 test -f $target_header_dir/bits/uClibc_config.h && \
6938 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
6939 $target_header_dir/bits/uClibc_config.h > /dev/null; then
6940 gcc_cv_libc_provides_ssp=yes
6942 # all versions of Bionic support stack protector
6943 elif test -f $target_header_dir/sys/cdefs.h \
6944 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
6945 $target_header_dir/sys/cdefs.h > /dev/null; then
6946 gcc_cv_libc_provides_ssp=yes
6950 # Avoid complicated tests (see
6951 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
6952 # simply assert that glibc does provide this, which is true for all
6953 # realistically usable GNU/Hurd configurations.
6954 # All supported versions of musl provide it as well
6955 gcc_cv_libc_provides_ssp=yes;;
6956 *-*-darwin* | *-*-freebsd* | *-*-netbsd*)
6957 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
6958 [echo "no __stack_chk_fail on this target"])
6960 *) gcc_cv_libc_provides_ssp=no ;;
6964 if test x$gcc_cv_libc_provides_ssp = xyes; then
6965 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
6966 [Define if your target C library provides stack protector support])
6969 # Check whether --enable-default-ssp was given.
6970 AC_ARG_ENABLE(default-ssp,
6971 [AS_HELP_STRING([--enable-default-ssp],
6972 [enable Stack Smashing Protection as default])],[
6973 if test x$gcc_cv_libc_provides_ssp = xyes; then
6975 ia64*-*-*) enable_default_ssp=no ;;
6976 *) enable_default_ssp=$enableval ;;
6979 enable_default_ssp=no
6981 enable_default_ssp=no)
6982 if test x$enable_default_ssp = xyes ; then
6983 AC_DEFINE(ENABLE_DEFAULT_SSP, 1,
6984 [Define if your target supports default stack protector and it is enabled.])
6986 AC_SUBST([enable_default_ssp])
6988 # Test for <sys/sdt.h> on the target.
6989 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
6990 AC_CACHE_CHECK([sys/sdt.h in the target C library], [gcc_cv_sys_sdt_h], [
6992 if test -f $target_header_dir/sys/sdt.h; then
6993 gcc_cv_sys_sdt_h=yes
6996 AS_IF([test x$gcc_cv_sys_sdt_h = xyes], [
6997 AC_DEFINE([HAVE_SYS_SDT_H], [1],
6998 [Define if your target C library provides sys/sdt.h])
7001 # Check if TFmode long double should be used by default or not.
7002 # Some glibc targets used DFmode long double, but with glibc 2.4
7003 # and later they can use TFmode.
7005 powerpc*-*-linux* | \
7009 AC_ARG_WITH(long-double-128,
7010 [AS_HELP_STRING([--with-long-double-128],
7011 [use 128-bit long double by default])],
7012 gcc_cv_target_ldbl128="$with_long_double_128", [
7014 s390*-*-linux-musl*)
7015 gcc_cv_target_ldbl128=yes
7017 powerpc*-*-linux-musl*)
7018 gcc_cv_target_ldbl128=no
7021 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
7022 [gcc_cv_target_ldbl128=no
7023 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
7024 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
7025 && gcc_cv_target_ldbl128=yes
7033 if test x$gcc_cv_target_ldbl128 = xyes; then
7034 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
7035 [Define if TFmode long double should be the default])
7038 # Check if TFmode long double target should use the IBM extended double or IEEE
7039 # 128-bit floating point formats if long doubles are 128-bits long. The long
7040 # double type can only be switched on powerpc64 bit Linux systems where VSX is
7041 # supported. Other PowerPC systems do not build the IEEE 128-bit emulator in
7043 AC_ARG_WITH([long-double-format],
7044 [AS_HELP_STRING([--with-long-double-format={ieee,ibm}]
7045 [Specify whether PowerPC long double uses IEEE or IBM format])],[
7046 case "$target:$with_long_double_format" in
7047 powerpc64le-*-linux*:ieee | powerpc64le-*-linux*:ibm)
7050 powerpc64-*-linux*:ieee | powerpc64-*-linux*:ibm)
7051 # IEEE 128-bit emulation is only built on 64-bit VSX Linux systems
7053 power7 | power8 | power9 | power1*)
7057 AC_MSG_ERROR([Configuration option --with-long-double-format is only \
7058 supported if the default cpu is power7 or newer])
7059 with_long_double_format=""
7063 powerpc64*-*-linux*:*)
7064 AC_MSG_ERROR([--with-long-double-format argument should be ibm or ieee])
7065 with_long_double_format=""
7068 AC_MSG_ERROR([Configure option --with-long-double-format is only supported \
7069 on 64-bit PowerPC VSX Linux systems])
7070 with_long_double_format=""
7075 # Check if the target LIBC supports exporting the AT_PLATFORM and AT_HWCAP
7076 # values in the TCB. Currently, only GLIBC 2.23 and later support this.
7077 gcc_cv_libc_provides_hwcap_in_tcb=no
7080 GCC_GLIBC_VERSION_GTE_IFELSE([2], [23], [gcc_cv_libc_provides_hwcap_in_tcb=yes], )
7083 if test x$gcc_cv_libc_provides_hwcap_in_tcb = xyes; then
7084 AC_DEFINE(TARGET_LIBC_PROVIDES_HWCAP_IN_TCB, 1,
7085 [Define if your target C Library provides the AT_HWCAP value in the TCB])
7088 # Check if the target LIBC handles PT_GNU_STACK.
7089 gcc_cv_libc_gnustack=unknown
7091 mips*-*-linux-musl*)
7092 gcc_cv_libc_gnustack=yes
7095 GCC_GLIBC_VERSION_GTE_IFELSE([2], [31], [gcc_cv_libc_gnustack=yes], )
7098 if test x$gcc_cv_libc_gnustack = xyes; then
7099 AC_DEFINE(TARGET_LIBC_GNUSTACK, 1,
7100 [Define if your target C Library properly handles PT_GNU_STACK])
7103 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
7104 gcc_cv_target_dl_iterate_phdr=unknown
7107 gcc_cv_target_dl_iterate_phdr=yes
7109 *-*-dragonfly* | *-*-freebsd*)
7110 if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then
7111 gcc_cv_target_dl_iterate_phdr=yes
7113 gcc_cv_target_dl_iterate_phdr=no
7117 gcc_cv_target_dl_iterate_phdr=yes
7120 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
7121 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
7122 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
7123 [Define if your target C library provides the `dl_iterate_phdr' function.])
7125 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
7127 # We no longer support different GC mechanisms. Emit an error if
7128 # the user configures with --with-gc.
7130 [AS_HELP_STRING([--with-gc={page,zone}],
7131 [this option is not supported anymore. It used to choose
7132 the garbage collection mechanism to use with the compiler])],
7133 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
7136 # Libraries to use on the host. This will normally be set by the top
7137 # level Makefile. Here we simply capture the value for our Makefile.
7138 if test -z "${HOST_LIBS+set}"; then
7143 # Use the system's zlib library.
7146 dnl Very limited version of automake's enable-maintainer-mode
7148 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
7149 dnl maintainer-mode is disabled by default
7150 AC_ARG_ENABLE(maintainer-mode,
7151 [AS_HELP_STRING([--enable-maintainer-mode],
7152 [enable make rules and dependencies not useful
7153 (and sometimes confusing) to the casual installer])],
7154 maintainer_mode=$enableval,
7157 AC_MSG_RESULT($maintainer_mode)
7159 if test "$maintainer_mode" = "yes"; then
7166 dnl Variables for tags utilities; copied from automake 1.16.4+'s init.m4
7167 if test -z "$CTAGS"; then
7171 if test -z "$ETAGS"; then
7175 if test -z "$CSCOPE"; then
7180 dnl Whether to prevent multiple front-ends from linking at the same time
7182 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
7183 AC_ARG_ENABLE(link-mutex,
7184 [AS_HELP_STRING([--enable-link-mutex],
7185 [avoid linking multiple front-ends at once to avoid thrashing
7186 on the build machine])],
7187 do_link_mutex=$enableval,
7189 AC_MSG_RESULT($do_link_mutex)
7191 if test "$do_link_mutex" = "yes"; then
7193 AC_MSG_WARN([--enable-link-mutex is deprecated and will be removed in the next release, use --enable-link-serialization instead])
7197 AC_SUBST(DO_LINK_MUTEX)
7199 dnl Whether to prevent multiple GCC front-ends from linking at the same time
7201 AC_MSG_CHECKING([whether to serialize linking of multiple front-ends])
7202 AC_ARG_ENABLE(link-serialization,
7203 [AS_HELP_STRING([--enable-link-serialization],
7204 [avoid linking multiple GCC front-ends at once using make
7205 dependencies to avoid thrashing on the build machine])],
7206 do_link_serialization=$enableval,
7207 do_link_serialization=no)
7208 AC_MSG_RESULT($do_link_serialization)
7210 case "$do_link_serialization" in
7212 DO_LINK_SERIALIZATION=1;;
7213 [[1-9]] | [[1-9]][[0-9]] | [[1-9]][[0-9]][[0-9]])
7214 DO_LINK_SERIALIZATION=$do_link_serialization;;
7216 DO_LINK_SERIALIZATION=;;
7218 AC_MSG_ERROR(bad value ${do_link_serialization} given for --enable-link-serialization) ;;
7220 AC_SUBST(DO_LINK_SERIALIZATION)
7226 # Make empty files to contain the specs and options for each language.
7227 # Then add #include lines to for a compiler that has specs and/or options.
7233 # These (without "all_") are set in each config-lang.in.
7234 # `language' must be a single word so is spelled singularly.
7237 all_outputs='Makefile'
7238 # List of language configure and makefile fragments.
7239 all_lang_configurefrags=
7241 # Additional files for gengtype
7242 all_gtfiles="$target_gtfiles"
7244 # These are the languages that are set in --enable-languages,
7245 # and are available in the GCC tree.
7246 all_selected_languages=
7248 # Add the language fragments.
7249 # Languages are added via two mechanisms. Some information must be
7250 # recorded in makefile variables, these are defined in config-lang.in.
7251 # We accumulate them and plug them into the main Makefile.
7252 # The other mechanism is a set of hooks for each of the main targets
7253 # like `clean', `install', etc.
7255 language_hooks="Make-hooks"
7257 for lang in ${srcdir}/*/config-lang.in
7260 test "$lang" = "${srcdir}/*/config-lang.in" && continue
7262 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
7263 if test "x$lang_alias" = x
7265 echo "$lang doesn't set \$language." 1>&2
7268 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
7269 subdirs="$subdirs $subdir"
7271 # $gcc_subdir is where the gcc integration files are to be found
7272 # for a language, both for internal compiler purposes (compiler
7273 # sources implementing front-end to GCC tree converters), and for
7274 # build infrastructure purposes (Make-lang.in, etc.)
7276 # This will be <subdir> (relative to $srcdir) if a line like
7277 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
7278 # is found in <langdir>/config-lang.in, and will remain <langdir>
7281 # Except for the language alias (fetched above), the regular
7282 # "config-lang.in" contents are always retrieved from $gcc_subdir,
7283 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
7284 # only this and the language alias.
7286 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
7287 if [ "$gcc_subdir" = "" ]; then
7288 gcc_subdir="$subdir"
7291 case ",$enable_languages," in
7293 all_selected_languages="$all_selected_languages $lang_alias"
7294 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
7295 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
7307 . ${srcdir}/$gcc_subdir/config-lang.in
7308 if test "x$language" = x
7310 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
7315 case ",$enable_languages," in
7318 for i in $subdir_requires; do
7319 test -f "${srcdir}/$i/config-lang.in" && continue
7327 all_lang_configurefrags="$all_lang_configurefrags \$(srcdir)/$gcc_subdir/config-lang.in"
7328 if test "x$language" = xc && test -n "$all_lang_makefrags"; then
7329 # Put c/Make-lang.in fragment first to match serialization languages order.
7330 all_lang_makefrags="\$(srcdir)/$gcc_subdir/Make-lang.in $all_lang_makefrags"
7332 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
7334 if test -f $srcdir/$gcc_subdir/lang.opt; then
7335 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
7336 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
7338 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
7339 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
7341 all_languages="$all_languages $language"
7342 all_compilers="$all_compilers $compilers"
7343 all_outputs="$all_outputs $outputs"
7344 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
7345 case ",$enable_languages," in
7347 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
7349 AC_SUBST(enable_lto)
7356 for language in $all_selected_languages
7358 check_languages="$check_languages check-$language"
7362 for language in $all_selected_languages
7364 selftest_languages="$selftest_languages selftest-$language"
7367 # We link each language in with a set of hooks, reached indirectly via
7368 # lang.${target}. Only do so for selected languages.
7372 target_list="all.cross start.encap rest.encap tags \
7373 install-common install-man install-info install-dvi install-pdf \
7374 install-html dvi pdf html uninstall info man srcextra srcman srcinfo \
7375 mostlyclean clean distclean maintainer-clean install-plugin"
7377 for t in $target_list
7380 for lang in $all_selected_languages
7384 echo "lang.$t: $x" >> Make-hooks
7387 echo "ifeq (\$(DO_LINK_SERIALIZATION),)" >> Make-hooks
7388 echo "SERIAL_LIST =" >> Make-hooks
7389 echo else >> Make-hooks
7393 serialization_languages=c
7394 for lang in $all_selected_languages
7396 test $lang = c && continue
7397 if test $lang = lto; then
7398 serialization_languages="$serialization_languages lto1 lto2"
7400 serialization_languages="$serialization_languages $lang"
7403 for lang in $serialization_languages
7405 test $lang = c && continue
7406 lang_cnt=`expr $lang_cnt + 1`
7407 lang_list=" $prev$lang_list"
7410 echo "SERIAL_LIST = \$(wordlist \$(DO_LINK_SERIALIZATION),$lang_cnt,$lang_list)" >> Make-hooks
7411 echo endif >> Make-hooks
7412 echo "SERIAL_COUNT = `expr $lang_cnt + 1`" >> Make-hooks
7413 echo "INDEX.c = 0" >> Make-hooks
7415 for lang in $serialization_languages
7417 test $lang = c && continue
7418 echo "$lang.prev = \$(if \$(word $lang_cnt,\$(SERIAL_LIST)),\$(\$(word $lang_cnt,\$(SERIAL_LIST)).serial))" >> Make-hooks
7419 echo "INDEX.$lang = $lang_idx" >> Make-hooks
7420 lang_cnt=`expr $lang_cnt - 1`
7421 lang_idx=`expr $lang_idx + 1`
7425 # Option include files
7428 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
7429 option_includes="option-includes.mk"
7430 AC_SUBST_FILE(option_includes)
7438 echo "dir ." > .gdbinit
7439 echo "dir ${srcdir}" >> .gdbinit
7440 if test x$gdb_needs_out_file_path = xyes
7442 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
7444 if test "x$subdirs" != x; then
7447 echo "dir ${srcdir}/$s" >> .gdbinit
7450 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
7451 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
7453 # Put a breakpoint on __asan_report_error to help with debugging buffer
7456 *-fsanitize=address*)
7457 echo "source ${srcdir}/gdbasan.in" >> .gdbinit
7461 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
7462 AC_SUBST(gcc_tooldir)
7465 # Find a directory in which to install a shared libgcc.
7467 AC_ARG_ENABLE(version-specific-runtime-libs,
7468 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
7469 [specify that runtime libraries should be
7470 installed in a compiler-specific directory])])
7472 # Substitute configuration variables
7475 AC_SUBST(all_compilers)
7476 AC_SUBST(all_gtfiles)
7477 AC_SUBST(all_lang_configurefrags)
7478 AC_SUBST(all_lang_makefrags)
7479 AC_SUBST(all_languages)
7480 AC_SUBST(all_selected_languages)
7481 AC_SUBST(build_exeext)
7482 AC_SUBST(build_install_headers_dir)
7483 AC_SUBST(build_xm_file_list)
7484 AC_SUBST(build_xm_include_list)
7485 AC_SUBST(build_xm_defines)
7486 AC_SUBST(build_file_translate)
7487 AC_SUBST(check_languages)
7488 AC_SUBST(selftest_languages)
7489 AC_SUBST(cpp_install_dir)
7490 AC_SUBST(xmake_file)
7491 AC_SUBST(tmake_file)
7492 AC_SUBST(TM_ENDIAN_CONFIG)
7493 AC_SUBST(TM_MULTILIB_CONFIG)
7494 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
7495 AC_SUBST(extra_gcc_objs)
7496 AC_SUBST(user_headers_inc_next_pre)
7497 AC_SUBST(user_headers_inc_next_post)
7498 AC_SUBST(extra_headers_list)
7499 AC_SUBST(extra_objs)
7500 AC_SUBST(extra_programs)
7501 AC_SUBST(float_h_file)
7502 AC_SUBST(gcc_config_arguments)
7503 AC_SUBST(gcc_gxx_include_dir)
7504 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
7505 AC_SUBST(gcc_gxx_libcxx_include_dir)
7506 AC_SUBST(gcc_gxx_libcxx_include_dir_add_sysroot)
7507 AC_SUBST(host_exeext)
7508 AC_SUBST(host_xm_file_list)
7509 AC_SUBST(host_xm_include_list)
7510 AC_SUBST(host_xm_defines)
7511 AC_SUBST(out_host_hook_obj)
7513 AC_SUBST(lang_opt_files)
7514 AC_SUBST(lang_specs_files)
7515 AC_SUBST(lang_tree_files)
7516 AC_SUBST(local_prefix)
7518 AC_SUBST(objc_boehm_gc)
7520 AC_SUBST(out_object_file)
7521 AC_SUBST(common_out_file)
7522 AC_SUBST(common_out_object_file)
7523 AC_SUBST(tm_file_list)
7524 AC_SUBST(tm_include_list)
7525 AC_SUBST(tm_defines)
7526 AC_SUBST(tm_p_file_list)
7527 AC_SUBST(tm_p_include_list)
7528 AC_SUBST(tm_d_file_list)
7529 AC_SUBST(tm_d_include_list)
7530 AC_SUBST(tm_rust_file_list)
7531 AC_SUBST(tm_rust_include_list)
7532 AC_SUBST(xm_file_list)
7533 AC_SUBST(xm_include_list)
7534 AC_SUBST(xm_defines)
7535 AC_SUBST(use_gcc_stdint)
7536 AC_SUBST(c_target_objs)
7537 AC_SUBST(cxx_target_objs)
7538 AC_SUBST(fortran_target_objs)
7539 AC_SUBST(d_target_objs)
7540 AC_SUBST(rust_target_objs)
7541 AC_SUBST(target_cpu_default)
7543 AC_SUBST_FILE(language_hooks)
7546 if test x${build} = x${host} ; then
7547 if test x${host} = x${target} ; then
7548 echo "Links are now set up to build a native compiler for ${target}." 1>&2
7550 echo "Links are now set up to build a cross-compiler" 1>&2
7551 echo " from ${host} to ${target}." 1>&2
7554 if test x${host} = x${target} ; then
7555 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
7556 echo " for ${target}." 1>&2
7558 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
7559 echo " from ${host} to ${target}." 1>&2
7563 AC_ARG_VAR(GMPLIBS,[How to link GMP])
7564 AC_ARG_VAR(GMPINC,[How to find GMP include files])
7566 AC_ARG_VAR(ISLLIBS,[How to link isl])
7567 AC_ARG_VAR(ISLINC,[How to find isl include files])
7568 if test "x${ISLLIBS}" != "x" ; then
7569 AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.])
7573 AC_SUBST(pluginlibs)
7574 AC_SUBST(enable_plugin)
7575 if test x"$enable_plugin" = x"yes"; then
7576 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
7580 # Enable --enable-host-shared
7581 AC_ARG_ENABLE(host-shared,
7582 [AS_HELP_STRING([--enable-host-shared],
7583 [build host code as shared libraries])])
7584 AC_SUBST(enable_host_shared)
7586 # Enable --enable-host-pie
7587 AC_ARG_ENABLE(host-pie,
7588 [AS_HELP_STRING([--enable-host-pie],
7589 [build host code as PIE])])
7590 AC_SUBST(enable_host_pie)
7592 # Enable --enable-host-bind-now
7593 AC_ARG_ENABLE(host-bind-now,
7594 [AS_HELP_STRING([--enable-host-bind-now],
7595 [link host code as BIND_NOW])])
7596 AC_SUBST(enable_host_bind_now)
7598 AC_ARG_ENABLE(libquadmath-support,
7599 [AS_HELP_STRING([--disable-libquadmath-support],
7600 [disable libquadmath support for Fortran])],
7601 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
7602 ENABLE_LIBQUADMATH_SUPPORT=yes)
7603 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
7604 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
7605 [Define to 1 to enable libquadmath support])
7609 # Specify what hash style to use by default.
7610 AC_ARG_WITH([linker-hash-style],
7611 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
7612 [specify the linker hash style])],
7613 [case x"$withval" in
7615 LINKER_HASH_STYLE=sysv
7618 LINKER_HASH_STYLE=gnu
7621 LINKER_HASH_STYLE=both
7624 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
7627 [LINKER_HASH_STYLE=''])
7628 if test x"${LINKER_HASH_STYLE}" != x; then
7629 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
7630 [The linker hash style])
7633 # Specify what should be the default of -fdiagnostics-color option.
7634 AC_ARG_WITH([diagnostics-color],
7635 [AC_HELP_STRING([--with-diagnostics-color={never,auto,auto-if-env,always}],
7636 [specify the default of -fdiagnostics-color option
7637 auto-if-env stands for -fdiagnostics-color=auto if
7638 GCC_COLOR environment variable is present and
7639 -fdiagnostics-color=never otherwise])],
7640 [case x"$withval" in
7642 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_NO
7645 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO
7648 DIAGNOSTICS_COLOR_DEFAULT=-1
7651 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_YES
7654 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-color])
7657 [DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO])
7658 AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT,
7659 [The default for -fdiagnostics-color option])
7661 # Specify what should be the default of -fdiagnostics-urls option.
7662 AC_ARG_WITH([diagnostics-urls],
7663 [AC_HELP_STRING([--with-diagnostics-urls={never,auto,auto-if-env,always}],
7664 [specify the default of -fdiagnostics-urls option
7665 auto-if-env stands for -fdiagnostics-urls=auto if
7666 GCC_URLS or TERM_URLS environment variable is present and
7667 -fdiagnostics-urls=never otherwise])],
7668 [case x"$withval" in
7670 DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_NO
7673 DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_AUTO
7676 DIAGNOSTICS_URLS_DEFAULT=-1
7679 DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_YES
7682 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-urls])
7685 [DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_AUTO])
7686 AC_DEFINE_UNQUOTED(DIAGNOSTICS_URLS_DEFAULT, $DIAGNOSTICS_URLS_DEFAULT,
7687 [The default for -fdiagnostics-urls option])
7689 # Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit
7690 # of jit/jit-playback.cc.
7691 gcc_driver_version=`eval "${get_gcc_base_ver} $srcdir/BASE-VER"`
7692 echo "gcc_driver_version: ${gcc_driver_version}"
7693 cat > gcc-driver-name.h <<EOF
7694 #define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_driver_version}${exeext}"
7697 # Check whether --enable-default-pie was given.
7698 AC_ARG_ENABLE(default-pie,
7699 [AS_HELP_STRING([--enable-default-pie],
7700 [enable Position Independent Executable as default])],
7701 enable_default_pie=$enableval,
7702 enable_default_pie=no)
7703 if test x$enable_default_pie = xyes ; then
7704 AC_DEFINE(ENABLE_DEFAULT_PIE, 1,
7705 [Define if your target supports default PIE and it is enabled.])
7707 AC_SUBST([enable_default_pie])
7709 # Check if -fno-PIE works.
7710 AC_CACHE_CHECK([for -fno-PIE option],
7712 [saved_CXXFLAGS="$CXXFLAGS"
7713 CXXFLAGS="$CXXFLAGS -fno-PIE"
7714 AC_COMPILE_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
7715 [gcc_cv_c_no_fpie=yes],
7716 [gcc_cv_c_no_fpie=no])
7717 CXXFLAGS="$saved_CXXFLAGS"])
7719 # Check if -no-pie works.
7720 AC_CACHE_CHECK([for -no-pie option],
7722 [saved_LDFLAGS="$LDFLAGS"
7723 LDFLAGS="$LDFLAGS -no-pie"
7724 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
7725 [gcc_cv_no_pie=yes],
7727 LDFLAGS="$saved_LDFLAGS"])
7729 if test x$enable_host_shared = xyes; then
7731 elif test x$enable_host_pie = xyes; then
7733 elif test x$gcc_cv_c_no_fpie = xyes; then
7741 if test x$enable_host_pie = xyes; then
7743 elif test x$gcc_cv_no_pie = xyes; then
7749 if test x$enable_host_bind_now = xyes; then
7750 LD_PICFLAG="$LD_PICFLAG -Wl,-z,now"
7753 AC_SUBST([LD_PICFLAG])
7755 # Enable Intel CET on Intel CET enabled host if jit is enabled.
7756 GCC_CET_HOST_FLAGS(CET_HOST_FLAGS)
7757 case x$enable_languages in
7764 AC_SUBST(CET_HOST_FLAGS)
7766 # Check linker supports '-z bndplt'
7767 ld_bndplt_support=no
7768 AC_MSG_CHECKING(linker -z bndplt option)
7769 if test x"$ld_is_gold" = xno; then
7770 if test $in_tree_ld = yes ; then
7771 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
7772 ld_bndplt_support=yes
7774 elif test x$gcc_cv_ld != x; then
7775 # Check if linker supports -z bndplt option
7776 if $gcc_cv_ld --help 2>&1 | grep -- '-z bndplt' > /dev/null; then
7777 ld_bndplt_support=yes
7781 if test x"$ld_bndplt_support" = xyes; then
7782 AC_DEFINE(HAVE_LD_BNDPLT_SUPPORT, 1,
7783 [Define if your linker supports -z bndplt])
7785 AC_MSG_RESULT($ld_bndplt_support)
7787 # Check linker supports '--push-state'/'--pop-state'
7788 ld_pushpopstate_support=no
7789 AC_MSG_CHECKING(linker --push-state/--pop-state options)
7790 if test x"$ld_is_gold" = xno; then
7791 if test $in_tree_ld = yes ; then
7792 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
7793 ld_pushpopstate_support=yes
7795 elif test x$gcc_cv_ld != x; then
7796 # Check if linker supports --push-state/--pop-state options
7797 if $gcc_cv_ld --help 2>&1 | grep -- '--push-state' > /dev/null; then
7798 ld_pushpopstate_support=yes
7802 if test x"$ld_pushpopstate_support" = xyes; then
7803 AC_DEFINE(HAVE_LD_PUSHPOPSTATE_SUPPORT, 1,
7804 [Define if your linker supports --push-state/--pop-state])
7806 AC_MSG_RESULT($ld_pushpopstate_support)
7808 # On s390, float_t has historically been statically defined as double for no
7809 # good reason. To comply with the C standard in the light of this definition,
7810 # gcc has evaluated float expressions in double precision when in
7811 # standards-compatible mode or when given -fexcess-precision=standard. To enable
7812 # a smooth transition towards the new model used by most architectures, where
7813 # gcc describes its behavior via the macro __FLT_EVAL_METHOD__ and glibc derives
7814 # float_t from that, this behavior can be configured with
7815 # --enable-s390-excess-float-precision. When given as enabled, that flag selects
7816 # the old model. When omitted, native builds and cross compiles that have target
7817 # libc headers will detect whether libc clamps float_t to double and in that
7818 # case maintain the old model. Otherwise, they will default to the new model.
7819 AC_ARG_ENABLE(s390-excess-float-precision,
7820 [AS_HELP_STRING([--enable-s390-excess-float-precision],
7821 [on s390 targets, evaluate float with double precision
7822 when in standards-conforming mode])],
7823 [],[enable_s390_excess_float_precision=auto])
7827 if test x"$enable_s390_excess_float_precision" = xauto; then
7828 # Can we autodetect the behavior of the target libc?
7829 if test "$target" = "$host" -a "$host" = "$build"; then
7830 enable_s390_excess_float_precision=autodetect
7831 elif test "x$with_headers" != xno; then
7832 # cross build. are target headers available?
7833 # carefully coerce the build-system compiler to use target headers
7834 saved_CXXFLAGS="$CXXFLAGS"
7835 fixed_XGCC_FLAGS_FOR_TARGET=`echo "$XGCC_FLAGS_FOR_TARGET" | sed 's/-B/-idirafter/g'`
7836 CROSS_TEST_CXXFLAGS="-nostdinc $fixed_XGCC_FLAGS_FOR_TARGET"
7837 CXXFLAGS="$CROSS_TEST_CXXFLAGS"
7838 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
7840 ]])], [enable_s390_excess_float_precision=autodetect], [])
7841 CXXFLAGS="$saved_CXXFLAGS"
7844 if test x"$enable_s390_excess_float_precision" = xautodetect; then
7845 saved_CXXFLAGS="$CXXFLAGS"
7846 if ! test "$target" = "$host" -a "$host" = "$build"; then
7847 CXXFLAGS="$CROSS_TEST_CXXFLAGS"
7848 unset CROSS_TEST_CXXFLAGS
7850 AC_CACHE_CHECK([for glibc clamping float_t to double],
7851 gcc_cv_float_t_clamped_to_double, [
7852 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
7853 #define __FLT_EVAL_METHOD__ 0
7855 int dummy[sizeof(float_t) == sizeof(double) ? 1 : -1];
7857 [gcc_cv_float_t_clamped_to_double=yes],
7858 [gcc_cv_float_t_clamped_to_double=no])])
7859 CXXFLAGS="$saved_CXXFLAGS"
7860 enable_s390_excess_float_precision="$gcc_cv_float_t_clamped_to_double"
7862 # no way to detect behavior of target libc, default to new model
7863 enable_s390_excess_float_precision=no
7867 GCC_TARGET_TEMPLATE(ENABLE_S390_EXCESS_FLOAT_PRECISION)
7868 if test x"$enable_s390_excess_float_precision" = xyes; then
7869 AC_DEFINE(ENABLE_S390_EXCESS_FLOAT_PRECISION, 1,
7870 [Define to enable evaluating float expressions with double precision in
7871 standards-compatible mode on s390 targets.])
7876 # Check if the linker supports '-z now'
7878 AC_MSG_CHECKING(linker -z now option)
7879 if test x"$ld_is_gold" = xyes; then
7881 elif test $in_tree_ld = yes ; then
7882 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then
7885 elif test x$gcc_cv_ld != x; then
7886 # Check if linker supports -z now
7887 if $gcc_cv_ld --help 2>&1 | grep -- '-z now' > /dev/null; then
7891 AC_DEFINE_UNQUOTED(HAVE_LD_NOW_SUPPORT,
7892 [`if test x"$ld_now_support" = xyes; then echo 1; else echo 0; fi`],
7893 [Define 0/1 if your linker supports -z now])
7894 AC_MSG_RESULT($ld_now_support)
7896 # Check if the linker supports '-z relro'
7898 AC_MSG_CHECKING(linker -z relro option)
7899 if test x"$ld_is_gold" = xyes; then
7900 ld_relro_support=yes
7901 elif test $in_tree_ld = yes ; then
7902 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2; then
7903 ld_relro_support=yes
7905 elif test x$gcc_cv_ld != x; then
7906 # Check if linker supports -z relro
7907 if $gcc_cv_ld --help 2>&1 | grep -- '-z relro' > /dev/null; then
7908 ld_relro_support=yes
7911 AC_DEFINE_UNQUOTED(HAVE_LD_RELRO_SUPPORT,
7912 [`if test x"$ld_relro_support" = xyes; then echo 1; else echo 0; fi`],
7913 [Define 0/1 if your linker supports -z relro])
7914 AC_MSG_RESULT($ld_relro_support)
7918 # -fhardened is only supported on GNU/Linux.
7919 fhardened_support=yes
7922 fhardened_support=no
7926 AC_DEFINE_UNQUOTED(HAVE_FHARDENED_SUPPORT,
7927 [`if test x"$fhardened_support" = xyes; then echo 1; else echo 0; fi`],
7928 [Define 0/1 if -fhardened is supported])
7929 AC_MSG_RESULT($fhardened_support)
7931 # Configure the subdirectories
7932 # AC_CONFIG_SUBDIRS($subdirs)
7934 # Create the Makefile
7935 # and configure language subdirectories
7936 AC_CONFIG_FILES($all_outputs)
7938 AC_CONFIG_COMMANDS([default],
7940 case ${CONFIG_HEADERS} in
7941 *auto-host.h:config.in*)
7944 # Make sure all the subdirs exist.
7945 for d in $subdirs doc build common c-family
7947 test -d $d || mkdir $d
7950 [subdirs='$subdirs'])