2 # Process this file with autoconf to generate a configuration script.
4 # Copyright (C) 1997-2022 Free Software Foundation, Inc.
6 #This file is part of GCC.
8 #GCC is free software; you can redistribute it and/or modify it under
9 #the terms of the GNU General Public License as published by the Free
10 #Software Foundation; either version 3, or (at your option) any later
13 #GCC is distributed in the hope that it will be useful, but WITHOUT
14 #ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 #FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
18 #You should have received a copy of the GNU General Public License
19 #along with GCC; see the file COPYING3. If not see
20 #<http://www.gnu.org/licenses/>.
22 # --------------------------------
23 # Initialization and sanity checks
24 # --------------------------------
27 AC_CONFIG_SRCDIR(tree.cc)
28 AC_CONFIG_MACRO_DIRS([../config] [..])
29 AC_CONFIG_HEADER(auto-host.h:config.in)
31 gcc_version=`cat $srcdir/BASE-VER`
33 # Determine the host, build, and target systems
38 # Determine the noncanonical host name, for Ada.
41 # Determine the noncanonical target name, for directory use.
42 ACX_NONCANONICAL_TARGET
44 # Used for constructing correct paths for offload compilers.
45 real_target_noncanonical=${target_noncanonical}
48 # Determine the target- and build-specific subdirectories
51 # Set program_transform_name
54 # Check for bogus environment variables.
55 # Test if LIBRARY_PATH contains the notation for the current directory
56 # since this would lead to problems installing/building glibc.
57 # LIBRARY_PATH contains the current directory if one of the following
59 # - one of the terminals (":" and ";") is the first or last sign
60 # - two terminals occur directly after each other
61 # - the path contains an element with a dot in it
62 AC_MSG_CHECKING(LIBRARY_PATH variable)
64 case ${LIBRARY_PATH} in
65 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
66 library_path_setting="contains current directory"
69 library_path_setting="ok"
73 AC_MSG_RESULT($library_path_setting)
74 if test "$library_path_setting" != "ok"; then
76 *** LIBRARY_PATH shouldn't contain the current directory when
77 *** building gcc. Please change the environment variable
78 *** and run configure again.])
81 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
82 # since this would lead to problems installing/building glibc.
83 # GCC_EXEC_PREFIX contains the current directory if one of the following
85 # - one of the terminals (":" and ";") is the first or last sign
86 # - two terminals occur directly after each other
87 # - the path contains an element with a dot in it
88 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
90 case ${GCC_EXEC_PREFIX} in
91 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
92 gcc_exec_prefix_setting="contains current directory"
95 gcc_exec_prefix_setting="ok"
99 AC_MSG_RESULT($gcc_exec_prefix_setting)
100 if test "$gcc_exec_prefix_setting" != "ok"; then
102 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
103 *** building gcc. Please change the environment variable
104 *** and run configure again.])
111 # Specify the local prefix
113 AC_ARG_WITH(local-prefix,
114 [AS_HELP_STRING([--with-local-prefix=DIR],
115 [specifies directory to put local include])],
116 [case "${withval}" in
117 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
119 *) local_prefix=$with_local_prefix ;;
122 # Default local prefix if it is empty
123 if test x$local_prefix = x; then
124 local_prefix=/usr/local
127 AC_ARG_WITH([native-system-header-dir],
128 [ --with-native-system-header-dir=dir
129 use dir as the directory to look for standard
130 system header files in. Defaults to /usr/include.],
132 case ${with_native_system_header_dir} in
133 yes|no) AC_MSG_ERROR([bad value ${withval} given for --with-native-system-header-dir]) ;;
134 /* | [[A-Za-z]]:[[\\/]]*) ;;
135 *) AC_MSG_ERROR([--with-native-system-header-dir argument ${withval} must be an absolute directory]) ;;
137 configured_native_system_header_dir="${withval}"
138 ], [configured_native_system_header_dir=])
140 AC_ARG_WITH(build-sysroot,
141 [AS_HELP_STRING([--with-build-sysroot=sysroot],
142 [use sysroot as the system root during the build])],
143 [if test x"$withval" != x ; then
144 SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
146 [SYSROOT_CFLAGS_FOR_TARGET=])
147 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
149 if test "x$prefix" = xNONE; then
150 test_prefix=/usr/local
154 if test "x$exec_prefix" = xNONE; then
155 test_exec_prefix=$test_prefix
157 test_exec_prefix=$exec_prefix
161 [AS_HELP_STRING([[--with-sysroot[=DIR]]],
162 [search for usr/lib, usr/include, et al, within DIR])],
164 case ${with_sysroot} in
166 */) with_sysroot=`echo $with_sysroot | sed 's,/$,,'` ;;
168 case ${with_sysroot} in
169 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
170 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
173 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
174 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
176 case ${TARGET_SYSTEM_ROOT} in
177 "${test_prefix}"|"${test_prefix}/"*|\
178 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
179 '${prefix}'|'${prefix}/'*|\
180 '${exec_prefix}'|'${exec_prefix}/'*)
181 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
182 TARGET_SYSTEM_ROOT_DEFINE="$t"
187 TARGET_SYSTEM_ROOT_DEFINE=
188 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
190 AC_SUBST(TARGET_SYSTEM_ROOT)
191 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
192 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
194 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
195 # passed in by the toplevel make and thus we'd get different behavior
196 # depending on where we built the sources.
198 # Specify the g++ header file directory
199 AC_ARG_WITH(gxx-include-dir,
200 [AS_HELP_STRING([--with-gxx-include-dir=DIR],
201 [specifies directory to put g++ header files])],
202 [case "${withval}" in
203 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
205 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
208 # If both --with-sysroot and --with-gxx-include-dir are passed, we interpolate
209 # the former in the latter and, upon success, compute gcc_gxx_include_dir as
210 # relative to the sysroot.
211 gcc_gxx_include_dir_add_sysroot=0
213 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
214 if test x${gcc_gxx_include_dir} = x; then
215 if test x${enable_version_specific_runtime_libs} = xyes; then
216 gcc_gxx_include_dir='${libsubdir}/include/c++'
218 libstdcxx_incdir='include/c++/$(version)'
219 if test x$host != x$target; then
220 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
222 gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir"
224 elif test "${with_sysroot+set}" = set; then
225 gcc_gxx_without_sysroot=`expr "${gcc_gxx_include_dir}" : "${with_sysroot}"'\(.*\)'`
226 if test "${gcc_gxx_without_sysroot}"; then
227 gcc_gxx_include_dir="${gcc_gxx_without_sysroot}"
228 gcc_gxx_include_dir_add_sysroot=1
232 # Configuration for an alternate set of C++ headers.
233 gcc_gxx_libcxx_include_dir=
234 # Specify the alternate g++ header file directory
235 AC_ARG_WITH(gxx-libcxx-include-dir,
236 [AS_HELP_STRING([--with-gxx-libcxx-include-dir=DIR],
237 [specifies directory to find libc++ header files])],
238 [case "${withval}" in
239 yes) AC_MSG_ERROR(bad value ${withval} given for libc++ include directory) ;;
241 *) gcc_gxx_libcxx_include_dir=$with_gxx_libcxx_include_dir ;;
244 # If both --with-sysroot and --with-gxx-libcxx-include-dir are passed, we
245 # check to see if the latter starts with the former and, upon success, compute
246 # gcc_gxx_libcxx_include_dir as relative to the sysroot.
247 gcc_gxx_libcxx_include_dir_add_sysroot=0
249 if test x${gcc_gxx_libcxx_include_dir} != x; then
250 AC_DEFINE(ENABLE_STDLIB_OPTION, 1,
251 [Define if the -stdlib= option should be enabled.])
253 AC_DEFINE(ENABLE_STDLIB_OPTION, 0)
255 # ??? This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
256 if test x${gcc_gxx_libcxx_include_dir} = x; then
257 if test x${enable_version_specific_runtime_libs} = xyes; then
258 gcc_gxx_libcxx_include_dir='${libsubdir}/libc++_include/c++/v1'
260 libcxx_incdir='libc++_include/c++/$(version)/v1'
261 if test x$host != x$target; then
262 libcxx_incdir="$target_alias/$libcxx_incdir"
264 gcc_gxx_libcxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libcxx_incdir"
266 elif test "${with_sysroot+set}" = set; then
267 gcc_gxx_libcxx_without_sysroot=`expr "${gcc_gxx_libcxx_include_dir}" : "${with_sysroot}"'\(.*\)'`
268 if test "${gcc_gxx_libcxx_without_sysroot}"; then
269 gcc_gxx_libcxx_include_dir="${gcc_gxx_libcxx_without_sysroot}"
270 gcc_gxx_libcxx_include_dir_add_sysroot=1
274 AC_ARG_WITH(cpp_install_dir,
275 [AC_HELP_STRING([--with-cpp-install-dir=DIR],
276 [install the user visible C preprocessor in DIR
277 (relative to PREFIX) as well as PREFIX/bin])],
278 [if test x$withval = xyes; then
279 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
280 elif test x$withval != xno; then
281 cpp_install_dir=$withval
284 # We would like to our source tree to be readonly. However when releases or
285 # pre-releases are generated, the flex/bison generated files as well as the
286 # various formats of manuals need to be included along with the rest of the
287 # sources. Therefore we have --enable-generated-files-in-srcdir to do
290 AC_MSG_CHECKING([whether to place generated files in the source directory])
291 dnl generated-files-in-srcdir is disabled by default
292 AC_ARG_ENABLE(generated-files-in-srcdir,
293 [AS_HELP_STRING([--enable-generated-files-in-srcdir],
294 [put copies of generated files in source dir
295 intended for creating source tarballs for users
296 without texinfo bison or flex])],
297 generated_files_in_srcdir=$enableval,
298 generated_files_in_srcdir=no)
300 AC_MSG_RESULT($generated_files_in_srcdir)
302 if test "$generated_files_in_srcdir" = "yes"; then
309 # -------------------
310 # Find default linker
311 # -------------------
315 [AS_HELP_STRING([--with-gnu-ld], [arrange to work with GNU ld])],
316 gnu_ld_flag="$with_gnu_ld",
321 ld64_flag=yes # Darwin can only use a ld64-compatible linker.
322 dsymutil_flag=yes # Darwin uses dsymutil to link debug.
330 # With pre-defined ld
332 [AS_HELP_STRING([--with-ld], [arrange to use the specified ld (full pathname)])],
333 DEFAULT_LINKER="$with_ld")
334 if test x"${DEFAULT_LINKER+set}" = x"set"; then
335 if test ! -x "$DEFAULT_LINKER"; then
336 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
337 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
339 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep ld64- > /dev/null; then
342 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
343 [Define to enable the use of a default linker.])
346 AC_MSG_CHECKING([whether a default linker was specified])
347 if test x"${DEFAULT_LINKER+set}" = x"set"; then
348 if test x"$gnu_ld_flag" = x"no"; then
349 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
351 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
357 # With demangler in GNU ld
358 AC_ARG_WITH(demangler-in-ld,
359 [AS_HELP_STRING([--with-demangler-in-ld], [try to use demangler in GNU ld])],
360 demangler_in_ld="$with_demangler_in_ld",
363 # Allow the user to specify a dsymutil executable (used on Darwin only, so far)
364 AC_ARG_WITH(dsymutil,
365 [AS_HELP_STRING([--with-dsymutil], [arrange to use the specified dsymutil (full pathname)])],
366 DEFAULT_DSYMUTIL="$with_dsymutil")
369 if test x"${DEFAULT_DSYMUTIL+set}" = x"set"; then
370 if test ! -x "$DEFAULT_DSYMUTIL"; then
371 AC_MSG_ERROR([cannot execute: $DEFAULT_DSYMUTIL: check --with-dsymutil or env. var. DEFAULT_DSYMUTIL])
373 if dsymutil_vers=`$DEFAULT_DSYMUTIL -v /dev/null 2>&1`; then
377 AC_DEFINE_UNQUOTED(DEFAULT_DSYMUTIL,"$DEFAULT_DSYMUTIL",
378 [Define to enable the use of a default debug linker.])
381 AC_MSG_CHECKING([whether a default dsymutil was specified])
382 if test x"${DEFAULT_DSYMUTIL+set}" = x"set"; then
383 AC_MSG_RESULT([yes ($DEFAULT_DSYMUTIL)])
388 # ----------------------
389 # Find default assembler
390 # ----------------------
394 [AS_HELP_STRING([--with-gnu-as], [arrange to work with GNU as])],
395 gas_flag="$with_gnu_as",
399 [AS_HELP_STRING([--with-as], [arrange to use the specified as (full pathname)])],
400 DEFAULT_ASSEMBLER="$with_as")
401 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
402 if test ! -x "$DEFAULT_ASSEMBLER"; then
403 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
404 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
407 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
408 [Define to enable the use of a default assembler.])
411 AC_MSG_CHECKING([whether a default assembler was specified])
412 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
413 if test x"$gas_flag" = x"no"; then
414 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
416 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
426 # If a non-executable a.out is present (e.g. created by GNU as above even if
427 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
428 # file, even when creating an executable, so an execution test fails.
429 # Remove possible default executable files to avoid this.
431 # FIXME: This really belongs into AC_PROG_CC and can be removed once
432 # Autoconf includes it.
433 rm -f a.out a.exe b.out
435 # Find the native compiler
438 ACX_PROG_GNAT([-I"$srcdir"/ada/libgnat])
439 ACX_PROG_GDC([-I"$srcdir"/d])
441 # Do configure tests with the C++ compiler, since that's what we build with.
444 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
445 # optimizations to be activated explicitly by the toplevel.
448 *) CFLAGS=`echo "$CFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" `
449 CXXFLAGS=`echo "$CXXFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" ` ;;
455 # Determine PICFLAG for target gnatlib.
456 GCC_PICFLAG_FOR_TARGET
457 AC_SUBST(PICFLAG_FOR_TARGET)
459 # -------------------------
460 # Check C compiler features
461 # -------------------------
463 AC_USE_SYSTEM_EXTENSIONS
469 AC_CHECK_SIZEOF(ino_t)
470 AC_CHECK_SIZEOF(dev_t)
472 # Select the right stat being able to handle 64bit inodes, if needed.
473 if test "$enable_largefile" != no; then
474 case "$host, $build" in
475 *-*-aix*,*|*,*-*-aix*)
476 if test "$ac_cv_sizeof_ino_t" == "4" -a "$ac_cv_sizeof_dev_t" == 4; then
477 AC_DEFINE(HOST_STAT_FOR_64BIT_INODES, stat64x,
478 [Define which stat syscall is able to handle 64bit indodes.])
484 # sizeof(char) is 1 by definition.
485 AC_CHECK_SIZEOF(void *)
486 AC_CHECK_SIZEOF(short)
488 AC_CHECK_SIZEOF(long)
489 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
491 if test x"$ac_cv_c_uint64_t" = x"no" -o x"$ac_cv_c_int64_t" = x"no"; then
492 AC_MSG_ERROR([uint64_t or int64_t not found])
495 # check what underlying integer type int64_t uses
496 AC_CACHE_CHECK(for int64_t underlying type, ac_cv_int64_t_type, [
497 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
501 template <typename T> struct X { };
503 struct X<long> { typedef long t; };
504 ]], [[X<int64_t>::t x;]])],[ac_cv_int64_t_type=long],[ac_cv_int64_t_type="long long"])])
505 if test "$ac_cv_int64_t_type" = "long"; then
506 AC_DEFINE(INT64_T_IS_LONG, 1,
507 [Define if int64_t uses long as underlying type.])
509 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
513 template <typename T> struct X { };
515 struct X<long long> { typedef long long t; };
516 ]], [[X<int64_t>::t x;]])],[],[AC_MSG_ERROR([error verifying int64_t uses long long])])
519 AC_CACHE_CHECK(for std::swap in <utility>, ac_cv_std_swap_in_utility, [
520 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
522 ]], [[int a, b; std::swap(a,b);]])],[ac_cv_std_swap_in_utility=yes],[ac_cv_std_swap_in_utility=no])])
523 if test $ac_cv_std_swap_in_utility = yes; then
524 AC_DEFINE(HAVE_SWAP_IN_UTILITY, 1,
525 [Define if <utility> defines std::swap.])
528 # Check whether compiler is affected by placement new aliasing bug (PR 29286).
529 # If the host compiler is affected by the bug, and we build with optimization
530 # enabled (which happens e.g. when cross-compiling), the pool allocator may
531 # get miscompiled. Use -fno-strict-aliasing to work around this problem.
532 # Since there is no reliable feature check for the presence of this bug,
533 # we simply use a GCC version number check. (This should never trigger for
534 # stages 2 or 3 of a native bootstrap.)
536 if test "$GCC" = yes; then
537 saved_CXXFLAGS="$CXXFLAGS"
539 # The following test compilation will succeed if and only if $CXX accepts
540 # -fno-strict-aliasing *and* is older than GCC 4.3.
541 CXXFLAGS="$CXXFLAGS -fno-strict-aliasing"
542 AC_MSG_CHECKING([whether $CXX is affected by placement new aliasing bug])
543 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
544 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)
545 #error compiler not affected by placement new aliasing bug
548 [AC_MSG_RESULT([yes]); aliasing_flags='-fno-strict-aliasing'],
549 [AC_MSG_RESULT([no])])
551 CXXFLAGS="$saved_CXXFLAGS"
553 AC_SUBST(aliasing_flags)
557 # ---------------------
558 # Warnings and checking
559 # ---------------------
561 # Check $CC warning features (if it's GCC).
562 # We want to use -pedantic, but we don't want warnings about
566 # * C++11 narrowing conversions in { }
567 # So, we only use -pedantic if we can disable those warnings.
569 # In stage 1, disable -Wformat warnings from old GCCs about new % codes
570 AC_ARG_ENABLE(build-format-warnings,
571 AS_HELP_STRING([--disable-build-format-warnings],[don't use -Wformat while building GCC]),
572 [],[enable_build_format_warnings=yes])
573 AS_IF([test $enable_build_format_warnings = no],
574 [wf_opt=-Wno-format],[wf_opt=])
575 ACX_PROG_CXX_WARNING_OPTS(
576 m4_quote(m4_do([-W -Wall -Wno-narrowing -Wwrite-strings ],
577 [-Wcast-qual $wf_opt])),
579 ACX_PROG_CC_WARNING_OPTS(
580 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes ],
581 [])), [c_loose_warn])
582 ACX_PROG_CXX_WARNING_OPTS(
583 m4_quote(m4_do([-Wmissing-format-attribute ],
584 [-Woverloaded-virtual])), [strict_warn])
585 ACX_PROG_CC_WARNING_OPTS(
586 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
587 ACX_PROG_CXX_WARNING_ALMOST_PEDANTIC(
588 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
589 [-Wno-overlength-strings])), [strict_warn])
590 ACX_PROG_CXX_WARNINGS_ARE_ERRORS([manual], [strict_warn])
592 # The above macros do nothing if the compiler is not GCC. However, the
593 # Makefile has more goo to add other flags, so these variables are used
594 # to enable warnings only for GCC.
597 if test "x$GCC" = "xyes"; then
598 warn_cflags='$(GCC_WARN_CFLAGS)'
599 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
601 AC_SUBST(warn_cflags)
602 AC_SUBST(warn_cxxflags)
604 # Disable exceptions and RTTI if building with g++
605 ACX_PROG_CC_WARNING_OPTS(
606 m4_quote(m4_do([-fno-exceptions -fno-rtti -fasynchronous-unwind-tables])),
609 # Enable expensive internal checks
611 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
615 AC_ARG_ENABLE(checking,
616 [AS_HELP_STRING([[--enable-checking[=LIST]]],
617 [enable expensive run-time checks. With LIST,
618 enable only specific categories of checks.
619 Categories are: yes,no,all,none,release.
620 Flags are: assert,df,extra,fold,gc,gcac,gimple,misc,
621 rtlflag,rtl,runtime,tree,valgrind,types])],
622 [ac_checking_flags="${enableval}"],[
623 # Determine the default checks.
624 if test x$is_release = x ; then
625 ac_checking_flags=yes,extra
627 ac_checking_flags=release
629 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
630 for check in release $ac_checking_flags
633 # these set all the flags to specific states
634 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
635 ac_fold_checking= ; ac_gc_checking=1 ; ac_extra_checking= ;
636 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
637 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
638 ac_tree_checking=1 ; ac_valgrind_checking= ;
639 ac_types_checking=1 ;;
640 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
641 ac_fold_checking= ; ac_gc_checking= ; ac_extra_checking= ;
642 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
643 ac_rtlflag_checking= ; ac_runtime_checking= ;
644 ac_tree_checking= ; ac_valgrind_checking= ;
645 ac_types_checking= ;;
646 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
647 ac_fold_checking=1 ; ac_gc_checking=1 ; ac_extra_checking=1 ;
648 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
649 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
650 ac_tree_checking=1 ; ac_valgrind_checking= ;
651 ac_types_checking=1 ;;
652 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
653 ac_fold_checking= ; ac_gc_checking= ; ac_extra_checking= ;
654 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
655 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
656 ac_tree_checking= ; ac_valgrind_checking= ;
657 ac_types_checking= ;;
658 # these enable particular checks
659 assert) ac_assert_checking=1 ;;
660 df) ac_df_checking=1 ;;
661 extra) ac_extra_checking=1 ;;
662 fold) ac_fold_checking=1 ;;
663 gc) ac_gc_checking=1 ;;
664 gcac) ac_gc_always_collect=1 ;;
665 gimple) ac_gimple_checking=1 ;;
666 misc) ac_checking=1 ;;
667 rtl) ac_rtl_checking=1 ;;
668 rtlflag) ac_rtlflag_checking=1 ;;
669 runtime) ac_runtime_checking=1 ;;
670 tree) ac_tree_checking=1 ;;
671 types) ac_types_checking=1 ;;
672 valgrind) ac_valgrind_checking=1 ;;
673 *) AC_MSG_ERROR(unknown check category $check) ;;
679 if test x$ac_checking != x ; then
680 AC_DEFINE(CHECKING_P, 1,
681 [Define to 0/1 if you want more run-time sanity checks. This one gets a grab
682 bag of miscellaneous but relatively cheap checks.])
683 nocommon_flag=-fno-common
685 AC_DEFINE(CHECKING_P, 0)
687 AC_SUBST(nocommon_flag)
688 if test x$ac_extra_checking != x ; then
689 AC_DEFINE(ENABLE_EXTRA_CHECKING, 1,
690 [Define to 0/1 if you want extra run-time checking that might affect code
693 AC_DEFINE(ENABLE_EXTRA_CHECKING, 0)
695 if test x$ac_df_checking != x ; then
696 AC_DEFINE(ENABLE_DF_CHECKING, 1,
697 [Define if you want more run-time sanity checks for dataflow.])
699 if test x$ac_assert_checking != x ; then
700 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
701 [Define if you want assertions enabled. This is a cheap check.])
703 if test x$ac_gimple_checking != x ; then
704 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
705 [Define if you want operations on GIMPLE (the basic data structure of
706 the high-level optimizers) to be checked for dynamic type safety at
707 runtime. This is moderately expensive.])
709 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
710 if test x$ac_runtime_checking != x ; then
711 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
712 [Define if you want runtime assertions enabled. This is a cheap check.])
714 if test x$ac_tree_checking != x ; then
715 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
716 [Define if you want all operations on trees (the basic data
717 structure of the front ends) to be checked for dynamic type safety
718 at runtime. This is moderately expensive.
722 if test x$ac_types_checking != x ; then
723 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
724 [Define if you want all gimple types to be verified after gimplifiation.
728 AC_SUBST(TREECHECKING)
729 if test x$ac_rtl_checking != x ; then
730 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
731 [Define if you want all operations on RTL (the basic data structure
732 of the optimizer and back end) to be checked for dynamic type safety
733 at runtime. This is quite expensive.])
735 if test x$ac_rtlflag_checking != x ; then
736 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
737 [Define if you want RTL flag accesses to be checked against the RTL
738 codes that are supported for each access macro. This is relatively
741 if test x$ac_gc_checking != x ; then
742 AC_DEFINE(ENABLE_GC_CHECKING, 1,
743 [Define if you want the garbage collector to do object poisoning and
744 other memory allocation checks. This is quite expensive.])
746 if test x$ac_gc_always_collect != x ; then
747 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
748 [Define if you want the garbage collector to operate in maximally
749 paranoid mode, validating the entire heap and collecting garbage at
750 every opportunity. This is extremely expensive.])
752 if test x$ac_fold_checking != x ; then
753 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
754 [Define if you want fold checked that it never destructs its argument.
755 This is quite expensive.])
757 valgrind_path_defines=
760 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
761 dnl # an if statement. This was the source of very frustrating bugs
762 dnl # in converting to autoconf 2.5x!
763 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
765 # It is certainly possible that there's valgrind but no valgrind.h.
766 # GCC relies on making annotations so we must have both.
767 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
768 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
769 [[#include <valgrind/memcheck.h>
770 #ifndef VALGRIND_DISCARD
771 #error VALGRIND_DISCARD not defined
773 [gcc_cv_header_valgrind_memcheck_h=yes],
774 [gcc_cv_header_valgrind_memcheck_h=no])
775 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
776 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
777 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
778 [[#include <memcheck.h>
779 #ifndef VALGRIND_DISCARD
780 #error VALGRIND_DISCARD not defined
782 [gcc_cv_header_memcheck_h=yes],
783 [gcc_cv_header_memcheck_h=no])
784 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
785 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
786 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
787 [Define if valgrind's valgrind/memcheck.h header is installed.])
789 if test $gcc_cv_header_memcheck_h = yes; then
790 AC_DEFINE(HAVE_MEMCHECK_H, 1,
791 [Define if valgrind's memcheck.h header is installed.])
794 if test x$ac_valgrind_checking != x ; then
795 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
796 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
797 if test "x$valgrind_path" = "x" \
798 || (test $have_valgrind_h = no \
799 && test $gcc_cv_header_memcheck_h = no \
800 && test $gcc_cv_header_valgrind_memcheck_h = no); then
801 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
803 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
804 valgrind_command="$valgrind_path -q"
805 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
806 [Define if you want to run subprograms and generated programs
807 through valgrind (a memory checker). This is extremely expensive.])
809 AC_SUBST(valgrind_path_defines)
810 AC_SUBST(valgrind_command)
812 # Enable code coverage collection
813 AC_ARG_ENABLE(coverage,
814 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
815 [enable compiler's code coverage collection.
816 Use to measure compiler performance and locate
817 unused parts of the compiler. With LEVEL, specify
818 optimization. Values are opt, noopt,
820 [case "${enableval}" in
822 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0 -fkeep-static-functions"
825 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2 -fkeep-static-functions"
828 # a.k.a. --disable-coverage
832 AC_MSG_ERROR(unknown coverage setting $enableval)
836 AC_SUBST(coverage_flags)
838 AC_ARG_ENABLE(gather-detailed-mem-stats,
839 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
840 [enable detailed memory allocation stats gathering])], [],
841 [enable_gather_detailed_mem_stats=no])
842 gather_stats=`if test $enable_gather_detailed_mem_stats != no; then echo 1; else echo 0; fi`
843 AC_DEFINE_UNQUOTED(GATHER_STATISTICS, $gather_stats,
844 [Define to enable detailed memory allocation stats gathering.])
846 AC_ARG_ENABLE(valgrind-annotations,
847 [AS_HELP_STRING([--enable-valgrind-annotations],
848 [enable valgrind runtime interaction])], [],
849 [enable_valgrind_annotations=no])
850 if test x$enable_valgrind_annotations != xno \
851 || test x$ac_valgrind_checking != x; then
852 if (test $have_valgrind_h = no \
853 && test $gcc_cv_header_memcheck_h = no \
854 && test $gcc_cv_header_valgrind_memcheck_h = no); then
855 AC_MSG_ERROR([*** Can't find valgrind/memcheck.h, memcheck.h or valgrind.h])
857 AC_DEFINE(ENABLE_VALGRIND_ANNOTATIONS, 1,
858 [Define to get calls to the valgrind runtime enabled.])
861 # -------------------------------
862 # Miscenalleous configure options
863 # -------------------------------
865 # Determine whether or not multilibs are enabled.
866 AC_ARG_ENABLE(multilib,
867 [AS_HELP_STRING([--enable-multilib],
868 [enable library support for multiple ABIs])],
869 [], [enable_multilib=yes])
870 AC_SUBST(enable_multilib)
872 # Determine whether or not multiarch is enabled.
873 AC_ARG_ENABLE(multiarch,
874 [AS_HELP_STRING([--enable-multiarch],
875 [enable support for multiarch paths])],
876 [case "${enableval}" in
877 yes|no|auto) enable_multiarch=$enableval;;
878 *) AC_MSG_ERROR(bad value ${enableval} given for --enable-multiarch option) ;;
879 esac], [enable_multiarch=auto])
880 if test x${enable_multiarch} = xauto; then
881 if test x${with_native_system_header_dir} != x; then
882 ma_msg_suffix=", disabled auto check (configured with --native-system-header-dir)"
885 if test x$host != x$target && test "x$with_sysroot" = x; then
886 ma_msg_suffix=", disabled auto check (cross build configured without --with-sysroot)"
890 if test x${enable_multiarch} = xyes; then
891 AC_DEFINE(ENABLE_MULTIARCH, 1)
893 AC_MSG_CHECKING(for multiarch configuration)
894 AC_SUBST(enable_multiarch)
895 AC_MSG_RESULT($enable_multiarch$ma_msg_suffix)
897 # needed for setting the multiarch name for soft-float/hard-float ABIs
901 # default stack clash protection guard size as power of twos in bytes.
902 # Please keep these in sync with params.def.
906 # Keep the default value when the option is not used to 0, this allows us to
907 # distinguish between the cases where the user specifially set a value via
908 # configure and when the normal default value is used.
909 AC_ARG_WITH(stack-clash-protection-guard-size,
910 [AS_HELP_STRING([--with-stack-clash-protection-guard-size=size],
911 [Set the default stack clash protection guard size for specific targets as a power of two in bytes.])],
912 [DEFAULT_STK_CLASH_GUARD_SIZE="$with_stack_clash_protection_guard_size"], [DEFAULT_STK_CLASH_GUARD_SIZE=0])
913 if test $DEFAULT_STK_CLASH_GUARD_SIZE -ne 0 \
914 && (test $DEFAULT_STK_CLASH_GUARD_SIZE -lt $stk_clash_min \
915 || test $DEFAULT_STK_CLASH_GUARD_SIZE -gt $stk_clash_max); then
916 AC_MSG_ERROR(m4_normalize([
917 Invalid value $DEFAULT_STK_CLASH_GUARD_SIZE for --with-stack-clash-protection-guard-size. \
918 Must be between $stk_clash_min and $stk_clash_max.]))
921 AC_DEFINE_UNQUOTED(DEFAULT_STK_CLASH_GUARD_SIZE, $DEFAULT_STK_CLASH_GUARD_SIZE,
922 [Define to larger than zero set the default stack clash protector size.])
924 # Enable __cxa_atexit for C++.
925 AC_ARG_ENABLE(__cxa_atexit,
926 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
929 # Enable C extension for decimal float if target supports it.
930 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
932 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
933 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
934 [Define to 1 to enable decimal float extension to C.])
936 # Use default_decimal_float for dependency.
937 enable_decimal_float=$default_decimal_float
939 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
940 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
941 [Define to 1 to specify that we are using the BID decimal floating
942 point format instead of DPD])
944 # Enable C extension for fixed-point arithmetic.
945 AC_ARG_ENABLE(fixed-point,
946 [AS_HELP_STRING([--enable-fixed-point],
947 [enable fixed-point arithmetic extension to C])],
952 enable_fixed_point=yes
956 enable_fixed_point=yes
959 enable_fixed_point=yes
962 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
963 enable_fixed_point=no
967 AC_SUBST(enable_fixed_point)
969 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
970 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
971 [Define to 1 to enable fixed-point arithmetic extension to C.])
974 # Pass with no value to take the default
975 # Pass with a value to specify a thread package
976 AC_ARG_ENABLE(threads,
977 [AS_HELP_STRING([[--enable-threads[=LIB]]],
978 [enable thread usage for target GCC,
979 using LIB thread package])],,
983 [AS_HELP_STRING([--enable-tls],
984 [enable or disable generation of tls code
985 overriding the assembler check for tls support])],
989 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
990 Valid choices are 'yes' and 'no'.]) ;;
994 AC_ARG_ENABLE(vtable-verify,
995 [AS_HELP_STRING([--enable-vtable-verify],
996 [enable vtable verification feature])],,
997 [enable_vtable_verify=no])
998 vtable_verify=`if test x$enable_vtable_verify = xyes; then echo 1; else echo 0; fi`
999 AC_DEFINE_UNQUOTED(ENABLE_VTABLE_VERIFY, $vtable_verify,
1000 [Define 0/1 if vtable verification feature is enabled.])
1002 AC_ARG_ENABLE(analyzer,
1003 [AS_HELP_STRING([--disable-analyzer],
1004 [disable -fanalyzer static analyzer])],
1005 if test x$enable_analyzer = xno; then
1011 AC_DEFINE_UNQUOTED(ENABLE_ANALYZER, $analyzer,
1012 [Define 0/1 if static analyzer feature is enabled.])
1014 AC_ARG_ENABLE(objc-gc,
1015 [AS_HELP_STRING([--enable-objc-gc],
1016 [enable the use of Boehm's garbage collector with
1017 the GNU Objective-C runtime])],
1018 if test x$enable_objc_gc = xno; then
1026 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
1027 dwarf2="$with_dwarf2",
1030 AC_ARG_ENABLE(shared,
1031 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
1033 case $enable_shared in
1037 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
1038 for pkg in $enableval; do
1039 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
1046 ], [enable_shared=yes])
1047 AC_SUBST(enable_shared)
1050 [ --disable-gcov don't provide libgcov and related host tools],
1051 [], [case $target in
1060 AC_SUBST(enable_gcov)
1063 [AS_HELP_STRING([--with-specs=SPECS],
1064 [add SPECS to driver command-line processing])],
1065 [CONFIGURE_SPECS=$withval],
1068 AC_SUBST(CONFIGURE_SPECS)
1070 ACX_PKGVERSION([GCC])
1071 ACX_BUGURL([https://gcc.gnu.org/bugs/])
1073 # Allow overriding the default URL for documentation
1074 AC_ARG_WITH(documentation-root-url,
1075 AS_HELP_STRING([--with-documentation-root-url=URL],
1076 [Root for documentation URLs]),
1078 yes) AC_MSG_ERROR([documentation root URL not specified]) ;;
1079 no) AC_MSG_ERROR([documentation root URL not specified]) ;;
1080 */) DOCUMENTATION_ROOT_URL="$withval" ;;
1081 *) AC_MSG_ERROR([documentation root URL does not end with /]) ;;
1083 DOCUMENTATION_ROOT_URL="https://gcc.gnu.org/onlinedocs/"
1085 AC_DEFINE_UNQUOTED(DOCUMENTATION_ROOT_URL,"$DOCUMENTATION_ROOT_URL",
1086 [Define to the root for documentation URLs.])
1088 # Allow overriding the default URL for GCC changes
1089 AC_ARG_WITH(changes-root-url,
1090 AS_HELP_STRING([--with-changes-root-url=URL],
1091 [Root for GCC changes URLs]),
1093 yes) AC_MSG_ERROR([changes root URL not specified]) ;;
1094 no) AC_MSG_ERROR([changes root URL not specified]) ;;
1095 */) CHANGES_ROOT_URL="$withval" ;;
1096 *) AC_MSG_ERROR([changes root URL does not end with /]) ;;
1098 CHANGES_ROOT_URL="https://gcc.gnu.org/"
1100 AC_DEFINE_UNQUOTED(CHANGES_ROOT_URL,"$CHANGES_ROOT_URL",
1101 [Define to the root for URLs about GCC changes.])
1103 # Sanity check enable_languages in case someone does not run the toplevel
1104 # configure # script.
1105 AC_ARG_ENABLE(languages,
1106 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
1107 [case ,${enable_languages}, in
1109 # go safe -- we cannot be much sure without the toplevel
1111 # analysis of which target libs are present and usable
1115 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
1120 enable_languages=c,${enable_languages}
1123 [enable_languages=c])
1125 # If top-level libada has been disabled, then wire in install-gnatlib
1126 # invocation with `make install', so that one can build and install
1127 # the library manually with `make -C gcc all gnatlib gnattools install'.
1128 if test x"$enable_libada" = xno; then
1129 gnat_install_lib=gnat-install-lib
1133 AC_SUBST(gnat_install_lib)
1135 if test x"$enable_as_accelerator_for" != x; then
1136 AC_DEFINE(ACCEL_COMPILER, 1,
1137 [Define if this compiler should be built as the offload target compiler.])
1138 enable_as_accelerator=yes
1139 sedscript="s#${target_noncanonical}#${enable_as_accelerator_for}-accel-${target_noncanonical}#"
1140 program_transform_name=`echo $program_transform_name | sed $sedscript`
1141 accel_dir_suffix=/accel/${target_noncanonical}
1142 real_target_noncanonical=${enable_as_accelerator_for}
1144 AC_SUBST(enable_as_accelerator)
1145 AC_SUBST(real_target_noncanonical)
1146 AC_SUBST(accel_dir_suffix)
1148 for tgt in `echo $enable_offload_targets | sed 's/,/ /g'`; do
1149 tgt=`echo $tgt | sed 's/=.*//'`
1154 omp_device_property=omp-device-properties-gcn
1155 omp_device_property_tmake_file="${omp_device_property_tmake_file} \$(srcdir)/config/gcn/t-omp-device"
1158 omp_device_property=omp-device-properties-nvptx
1159 omp_device_property_tmake_file="${omp_device_property_tmake_file} \$(srcdir)/config/nvptx/t-omp-device"
1162 AC_MSG_ERROR([unknown offload target specified])
1165 omp_device_properties="${omp_device_properties} ${tgt}=${omp_device_property}"
1166 omp_device_property_deps="${omp_device_property_deps} ${omp_device_property}"
1168 if test x"$offload_targets" = x; then
1169 offload_targets=$tgt
1171 offload_targets="$offload_targets,$tgt"
1174 AC_SUBST(omp_device_properties)
1175 AC_SUBST(omp_device_property_deps)
1177 AC_DEFINE_UNQUOTED(OFFLOAD_TARGETS, "$offload_targets",
1178 [Define to offload targets, separated by commas.])
1179 if test x"$enable_offloading" != x; then
1180 AC_DEFINE(ENABLE_OFFLOADING, 1,
1181 [Define this to enable support for offloading.])
1183 AC_DEFINE(ENABLE_OFFLOADING, 0,
1184 [Define this to enable support for offloading.])
1187 if test "x$enable_offload_defaulted" = xyes; then
1188 AC_DEFINE(OFFLOAD_DEFAULTED, 1,
1189 [Define to 1 to if -foffload is defaulted])
1192 AC_ARG_WITH(multilib-list,
1193 [AS_HELP_STRING([--with-multilib-list], [select multilibs (AArch64, ARM, AVR, OR1K, RISC-V, SH and x86-64 only)])],
1195 with_multilib_list=default)
1197 AC_ARG_WITH(multilib-generator,
1198 [AS_HELP_STRING([--with-multilib-generator], [Multi-libs configuration string (RISC-V only)])],
1200 with_multilib_generator=default)
1202 # -------------------------
1203 # Checks for other programs
1204 # -------------------------
1208 # Find some useful tools
1210 # We need awk to create options.cc and options.h.
1211 # Bail out if it's missing.
1213 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
1220 AC_SUBST(ranlib_flags)
1224 # See if cmp has --ignore-initial.
1225 gcc_AC_PROG_CMP_IGNORE_INITIAL
1227 # See if we have the mktemp command.
1228 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
1230 # See if makeinfo has been installed and is modern enough
1231 # that we can use it.
1232 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
1233 [GNU texinfo.* \([0-9][0-9.]*\)],
1234 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
1235 if test $gcc_cv_prog_makeinfo_modern = no; then
1237 *** Makeinfo is missing or too old.
1238 *** Info documentation will not be built.])
1243 AC_SUBST(BUILD_INFO)
1245 # Is pod2man recent enough to regenerate manpages?
1246 AC_MSG_CHECKING([for recent Pod::Man])
1247 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
1249 GENERATED_MANPAGES=generated-manpages
1254 AC_SUBST(GENERATED_MANPAGES)
1256 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
1259 dnl Don't use AC_PROG_LEX; we insist on flex.
1260 dnl LEXLIB is not useful in gcc.
1261 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
1264 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
1266 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
1267 # check for build == host before using them.
1270 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
1271 && test -d ../binutils ; then
1272 NM='${objdir}/../binutils/nm-new'
1274 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
1278 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
1279 && test -d ../binutils ; then
1280 AR='${objdir}/../binutils/ar'
1282 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
1285 # The jit documentation looks better if built with sphinx, but can be
1286 # built with texinfo if sphinx is not available.
1287 # Set "doc_build_sys" to "sphinx" or "texinfo" accordingly.
1288 AC_CHECK_PROG(doc_build_sys, sphinx-build, sphinx, texinfo)
1290 # --------------------
1291 # Checks for C headers
1292 # --------------------
1294 # Need to reject headers which give warnings, so that the -Werror bootstrap
1295 # works later. *sigh* This needs to come before all header checks.
1302 AC_HEADER_TIOCGWINSZ
1303 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
1304 fcntl.h ftw.h unistd.h sys/auxv.h sys/file.h sys/time.h sys/mman.h \
1305 sys/resource.h sys/param.h sys/times.h sys/stat.h sys/locking.h \
1306 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
1308 # Check for thread headers.
1309 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
1310 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
1312 # These tests can't be done till we know if we have limits.h.
1316 # ----------------------
1317 # Checks for C++ headers
1318 # ----------------------
1320 dnl Autoconf will give an error in the configure script if there is no
1321 dnl C++ preprocessor. Hack to prevent that.
1322 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
1324 m4_popdef([AC_MSG_ERROR])[]dnl
1326 AC_CHECK_HEADERS(unordered_map)
1327 AC_CHECK_HEADERS(tr1/unordered_map)
1328 AC_CHECK_HEADERS(ext/hash_map)
1331 # Dependency checking.
1335 AC_CONFIG_COMMANDS([gccdepdir],[
1336 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR
1337 for lang in $subdirs c-family common analyzer rtl-ssa
1339 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs $lang/$DEPDIR
1340 done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR])
1342 ZW_PROG_COMPILER_DEPENDENCIES([CXX])
1349 # These libraries may be used by collect2.
1350 # We may need a special search path to get them linked.
1351 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
1353 for libs in '' -lld -lmld \
1354 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
1355 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1358 AC_TRY_LINK_FUNC(ldopen,
1359 [gcc_cv_collect2_libs="$libs"; break])
1362 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1363 case $gcc_cv_collect2_libs in
1365 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1367 AC_SUBST(COLLECT2_LIBS)
1369 # When building Ada code on Alpha, we need exc_resume which is usually in
1370 # -lexc. So test for it.
1373 AC_SEARCH_LIBS(exc_resume, exc)
1376 AC_SUBST(GNAT_LIBEXC)
1378 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1381 AC_SEARCH_LIBS(kstat_open, kstat)
1382 EXTRA_GCC_LIBS="$LIBS"
1384 AC_SUBST(EXTRA_GCC_LIBS)
1386 # Solaris needs libsocket and libnsl for socket functions before 11.4.
1387 # C++ needs those for libcody.
1395 # Some systems put ldexp and frexp in libm instead of libc; assume
1396 # they're both in the same place. jcf-dump needs them.
1399 AC_SEARCH_LIBS(ldexp, m)
1404 # Some systems need dlopen
1407 AC_SEARCH_LIBS(dlopen, dl)
1412 # Use <inttypes.h> only if it exists,
1413 # doesn't clash with <sys/types.h>, declares intmax_t and defines
1415 AC_MSG_CHECKING(for inttypes.h)
1416 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1417 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1418 [[#define __STDC_FORMAT_MACROS
1419 #include <sys/types.h>
1420 #include <inttypes.h>]],
1425 [gcc_cv_header_inttypes_h=yes],
1426 [gcc_cv_header_inttypes_h=no])])
1427 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1428 if test $gcc_cv_header_inttypes_h = yes; then
1429 AC_DEFINE(HAVE_INTTYPES_H, 1,
1430 [Define if you have a working <inttypes.h> header file.])
1433 # Look for the ZSTD package.
1436 AC_SUBST(ZSTD_INCLUDE)
1440 AC_SUBST(ZSTD_CPPFLAGS)
1441 AC_SUBST(ZSTD_LDFLAGS)
1443 [AS_HELP_STRING([--with-zstd=PATH],
1444 [specify prefix directory for installed zstd library.
1445 Equivalent to --with-zstd-include=PATH/include
1446 plus --with-zstd-lib=PATH/lib])])
1447 AC_ARG_WITH(zstd-include,
1448 [AS_HELP_STRING([--with-zstd-include=PATH],
1449 [specify directory for installed zstd include files])])
1450 AC_ARG_WITH(zstd-lib,
1451 [AS_HELP_STRING([--with-zstd-lib=PATH],
1452 [specify directory for the installed zstd library])])
1453 case "x$with_zstd" in
1459 *) ZSTD_INCLUDE=$with_zstd/include
1460 ZSTD_LIB=$with_zstd/lib
1464 if test "x$with_zstd" != xno; then
1465 if test "x$with_zstd_include" != x; then
1466 ZSTD_INCLUDE=$with_zstd_include
1468 if test "x$with_zstd_lib" != x; then
1469 ZSTD_LIB=$with_zstd_lib
1471 if test "x$ZSTD_INCLUDE" != x \
1472 && test "x$ZSTD_INCLUDE" != xno; then
1473 ZSTD_CPPFLAGS=-I$ZSTD_INCLUDE
1475 if test "x$ZSTD_LIB" != x \
1476 && test "x$ZSTD_LIB" != xno; then
1477 ZSTD_LDFLAGS=-L$ZSTD_LIB
1480 CXXFLAGS="$CXXFLAGS $ZSTD_CPPFLAGS"
1481 LDFLAGS="$LDFLAGS $ZSTD_LDFLAGS"
1483 AC_MSG_CHECKING(for zstd.h)
1484 AC_CACHE_VAL(gcc_cv_header_zstd_h,
1485 # We require version 1.3.0 or later. This is the first version that has
1486 # ZSTD_getFrameContentSize.
1487 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1489 #if ZSTD_VERSION_NUMBER < 10300
1490 #error "need zstd 1.3.0 or better"
1492 [gcc_cv_header_zstd_h=yes],
1493 [gcc_cv_header_zstd_h=no])])
1494 AC_MSG_RESULT($gcc_cv_header_zstd_h)
1495 if test $gcc_cv_header_zstd_h = yes; then
1496 AC_DEFINE(HAVE_ZSTD_H, 1,
1497 [Define if you have a working <zstd.h> header file.])
1498 elif test "x$with_zstd" != x; then
1499 as_fn_error $? "Unable to find zstd.h. See config.log for details." "$LINENO" 5
1502 # LTO can use zstd compression algorithm
1505 AC_SEARCH_LIBS(ZSTD_compress, zstd)
1511 dnl Disabled until we have a complete test for buggy enum bitfields.
1512 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1514 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1515 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1516 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1517 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1518 putchar_unlocked putc_unlocked)
1519 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoq \
1520 popen sysconf strsignal getrusage nl_langinfo \
1521 gettimeofday mbstowcs wcswidth mmap posix_fallocate setlocale \
1522 gcc_UNLOCKED_FUNCS madvise mallinfo mallinfo2 fstatat getauxval)
1524 if test x$ac_cv_func_mbstowcs = xyes; then
1525 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1526 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1532 [gcc_cv_func_mbstowcs_works=yes],
1533 [gcc_cv_func_mbstowcs_works=no],
1534 [gcc_cv_func_mbstowcs_works=yes])])
1535 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1536 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1537 [Define this macro if mbstowcs does not crash when its
1538 first argument is NULL.])
1542 AC_CHECK_TYPE(ssize_t, int)
1543 AC_CHECK_TYPE(caddr_t, char *)
1544 AC_CHECK_TYPE(sighander_t,
1545 AC_DEFINE(HAVE_SIGHANDLER_T, 1,
1546 [Define if <sys/signal.h> defines sighandler_t]),
1549 GCC_AC_FUNC_MMAP_BLACKLIST
1553 # Under VMS, vfork works very differently than on Unix. The standard test
1554 # won't work, and it isn't easily adaptable. It makes more sense to
1556 ac_cv_func_vfork_works=yes
1563 # Until we have in-tree GNU iconv:
1565 if test -f "$LTLIBICONV"; then
1566 LIBICONV_DEP=$LTLIBICONV
1568 AC_SUBST(LIBICONV_DEP)
1574 # We will need to find libiberty.h and ansidecl.h
1575 saved_CFLAGS="$CFLAGS"
1576 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1577 saved_CXXFLAGS="$CXXFLAGS"
1578 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1580 # gcc_AC_CHECK_DECLS doesn't support overloaded functions, so use the
1581 # normal autoconf function for these. But force definition of
1582 # HAVE_DECL_BASENAME like gcc_AC_CHECK_DECLS does, to suppress the bizarre
1583 # basename handling in libiberty.h.
1584 AC_CHECK_DECLS([basename(const char*), strstr(const char*,const char*)], , ,[
1585 #undef HAVE_DECL_BASENAME
1586 #define HAVE_DECL_BASENAME 1
1587 #include "ansidecl.h"
1588 #include "system.h"])
1590 gcc_AC_CHECK_DECLS(getenv atol atoll asprintf sbrk abort atof getcwd getwd \
1591 madvise stpcpy strnlen strsignal strverscmp \
1592 strtol strtoul strtoll strtoull setenv unsetenv \
1593 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1594 free getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1595 #include "ansidecl.h"
1596 #include "system.h"])
1598 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1599 #include "ansidecl.h"
1601 #ifdef HAVE_SYS_RESOURCE_H
1602 #include <sys/resource.h>
1606 gcc_AC_CHECK_DECLS(mallinfo mallinfo2, , ,[
1607 #include "ansidecl.h"
1609 #ifdef HAVE_MALLOC_H
1614 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1615 #include "ansidecl.h"
1617 #ifdef HAVE_SYS_RESOURCE_H
1618 #include <sys/resource.h>
1620 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1621 [Define to `long' if <sys/resource.h> doesn't define.])])
1623 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1624 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1625 # in collect2.cc, <fcntl.h> isn't visible, but the configure test below needs
1626 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1627 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1628 #include "ansidecl.h"
1637 gcc_AC_CHECK_DECLS(times, , ,[
1638 #include "ansidecl.h"
1640 #ifdef HAVE_SYS_TIMES_H
1641 #include <sys/times.h>
1645 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1646 #include "ansidecl.h"
1651 # More time-related stuff.
1652 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1653 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1654 #include "ansidecl.h"
1656 #ifdef HAVE_SYS_TIMES_H
1657 #include <sys/times.h>
1659 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1660 if test $ac_cv_struct_tms = yes; then
1661 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1662 [Define if <sys/times.h> defines struct tms.])
1665 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1666 # revisit after autoconf 2.50.
1667 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1668 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1669 #include "ansidecl.h"
1671 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1672 if test $gcc_cv_type_clock_t = yes; then
1673 AC_DEFINE(HAVE_CLOCK_T, 1,
1674 [Define if <time.h> defines clock_t.])
1677 # Check if F_SETLKW is supported by fcntl.
1678 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1679 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1680 #include <fcntl.h>]], [[
1686 return fcntl (1, F_SETLKW, &fl);]])],
1687 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1688 if test $ac_cv_f_setlkw = yes; then
1689 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1690 [Define if F_SETLKW supported by fcntl.])
1693 # Check if O_CLOEXEC is defined by fcntl
1694 AC_CACHE_CHECK(for O_CLOEXEC, ac_cv_o_cloexec, [
1695 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1696 #include <fcntl.h>]], [[
1697 return open ("/dev/null", O_RDONLY | O_CLOEXEC);]])],
1698 [ac_cv_o_cloexec=yes],[ac_cv_o_cloexec=no])])
1699 if test $ac_cv_o_cloexec = yes; then
1700 AC_DEFINE(HOST_HAS_O_CLOEXEC, 1,
1701 [Define if O_CLOEXEC supported by fcntl.])
1704 # Check if O_NONBLOCK is defined by fcntl
1705 AC_CHECK_HEADERS([fcntl.h])
1706 AC_CHECK_DECL(O_NONBLOCK,,,[#include <fcntl.h>])
1707 if test $ac_cv_have_decl_O_NONBLOCK = yes; then
1708 AC_DEFINE(HOST_HAS_O_NONBLOCK, 1,
1709 [Define if O_NONBLOCK supported by fcntl.])
1713 # C++ Modules would like some networking features to provide the mapping
1714 # server. You can still use modules without them though.
1715 # The following network-related checks could probably do with some
1716 # Windows and other non-linux defenses and checking.
1718 # Local socket connectivity wants AF_UNIX networking
1719 # Check for AF_UNIX networking
1720 AC_CACHE_CHECK(for AF_UNIX, ac_cv_af_unix, [
1721 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1722 #include <sys/types.h>
1723 #include <sys/socket.h>
1725 #include <netinet/in.h>]],[[
1727 un.sun_family = AF_UNSPEC;
1728 int fd = socket (AF_UNIX, SOCK_STREAM, 0);
1729 connect (fd, (sockaddr *)&un, sizeof (un));]])],
1730 [ac_cv_af_unix=yes],
1731 [ac_cv_af_unix=no])])
1732 if test $ac_cv_af_unix = yes; then
1733 AC_DEFINE(HAVE_AF_UNIX, 1,
1734 [Define if AF_UNIX supported.])
1737 # Remote socket connectivity wants AF_INET6 networking
1738 # Check for AF_INET6 networking
1739 AC_CACHE_CHECK(for AF_INET6, ac_cv_af_inet6, [
1740 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1741 #include <sys/types.h>
1742 #include <sys/socket.h>
1743 #include <netinet/in.h>
1744 #include <netdb.h>]],[[
1746 in6.sin6_family = AF_UNSPEC;
1747 struct addrinfo *addrs = 0;
1748 struct addrinfo hints;
1750 hints.ai_family = AF_INET6;
1751 hints.ai_socktype = SOCK_STREAM;
1752 hints.ai_protocol = 0;
1753 hints.ai_canonname = 0;
1756 int e = getaddrinfo ("localhost", 0, &hints, &addrs);
1757 const char *str = gai_strerror (e);
1758 freeaddrinfo (addrs);
1759 int fd = socket (AF_INET6, SOCK_STREAM, 0);
1760 connect (fd, (sockaddr *)&in6, sizeof (in6));]])],
1761 [ac_cv_af_inet6=yes],
1762 [ac_cv_af_inet6=no])])
1763 if test $ac_cv_af_inet6 = yes; then
1764 AC_DEFINE(HAVE_AF_INET6, 1,
1765 [Define if AF_INET6 supported.])
1768 # Check if _LK_LOCK is supported by _locking
1769 AC_CACHE_CHECK(for _LK_LOCK, ac_cv_lk_lock, [
1770 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1772 #include <sys/locking.h>]], [[
1774 return _locking (fd, _LK_LOCK, 0);]])],
1775 [ac_cv_lk_lock=yes],[ac_cv_lk_lock=no])])
1776 if test $ac_cv_lk_lock = yes; then
1777 AC_DEFINE(HOST_HAS_LK_LOCK, 1,
1778 [Define if _LK_LOC supported by _locking.])
1781 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1782 CFLAGS="$saved_CFLAGS"
1783 CXXFLAGS="$saved_CXXFLAGS"
1785 # mkdir takes a single argument on some systems.
1786 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1794 # With Setjmp/Longjmp based exception handling.
1795 AC_ARG_ENABLE(sjlj-exceptions,
1796 [AS_HELP_STRING([--enable-sjlj-exceptions],
1797 [arrange to use setjmp/longjmp exception handling])],
1798 [force_sjlj_exceptions=yes],
1801 force_sjlj_exceptions=yes
1805 force_sjlj_exceptions=no
1808 if test $force_sjlj_exceptions = yes; then
1809 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1810 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1811 [Define 0/1 to force the choice for exception handling model.])
1814 # --------------------------------------------------------
1815 # Build, host, and target specific configuration fragments
1816 # --------------------------------------------------------
1818 # Collect build-machine-specific information.
1819 . ${srcdir}/config.build || exit 1
1821 # Collect host-machine-specific information.
1822 . ${srcdir}/config.host || exit 1
1826 # Collect target-machine-specific information.
1827 . ${srcdir}/config.gcc || exit 1
1829 extra_objs="${host_extra_objs} ${extra_objs}"
1830 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1832 # Default the target-machine variables that were not explicitly set.
1833 if test x"$tm_file" = x
1834 then tm_file=$cpu_type/$cpu_type.h; fi
1836 if test x"$extra_headers" = x
1837 then extra_headers=; fi
1839 if test x$md_file = x
1840 then md_file=$cpu_type/$cpu_type.md; fi
1842 if test x$out_file = x
1843 then out_file=$cpu_type/$cpu_type.cc; fi
1845 if test x"$tmake_file" = x
1846 then tmake_file=$cpu_type/t-$cpu_type
1849 # Support --enable-initfini-array.
1850 if test x$enable_initfini_array != xno; then
1851 tm_file="${tm_file} initfini-array.h"
1854 if test x"$dwarf2" = xyes
1855 then tm_file="$tm_file tm-dwarf2.h"
1858 # Say what files are being used for the output code and MD file.
1859 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1860 echo "Using \`$srcdir/config/$md_file' as machine description file."
1862 # If any of the xm_file variables contain nonexistent files, warn
1863 # about them and drop them.
1866 for x in $build_xm_file; do
1867 if test -f $srcdir/config/$x
1869 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1875 for x in $host_xm_file; do
1876 if test -f $srcdir/config/$x
1878 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1884 for x in $xm_file; do
1885 if test -f $srcdir/config/$x
1887 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1893 for f in $tm_file; do
1896 if test $count = ax; then
1897 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1899 echo "Using the following target machine macro files:"
1900 for f in $tm_file; do
1901 echo " $srcdir/config/$f"
1905 if test x$use_long_long_for_widest_fast_int = xyes; then
1906 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1907 [Define to 1 if the 'long long' type is wider than 'long' but still
1908 efficiently supported by the host hardware.])
1911 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1912 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1914 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1915 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1918 for f in $host_xm_file; do
1921 if test $count = a; then
1923 elif test $count = ax; then
1924 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1926 echo "Using the following host machine macro files:"
1927 for f in $host_xm_file; do
1928 echo " $srcdir/config/$f"
1931 echo "Using ${out_host_hook_obj} for host machine hooks."
1933 if test "$host_xm_file" != "$build_xm_file"; then
1935 for f in $build_xm_file; do
1938 if test $count = a; then
1940 elif test $count = ax; then
1941 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1943 echo "Using the following build machine macro files:"
1944 for f in $build_xm_file; do
1945 echo " $srcdir/config/$f"
1950 if test -n "$configured_native_system_header_dir"; then
1951 native_system_header_dir=$configured_native_system_header_dir
1953 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1954 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1958 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1959 gcc_cv_mcontext_underscores,
1960 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
1961 #include <sys/cdefs.h>
1962 #include <sys/signal.h>
1963 #include <ucontext.h>
1964 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1966 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1967 if test $gcc_cv_mcontext_underscores = yes; then
1968 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1969 [mcontext_t fields start with __])
1978 # Check if a valid thread package
1979 case ${enable_threads} in
1982 target_thread_file='single'
1986 target_thread_file='single'
1988 aix | dce | lynx | mipssde | posix | rtems | \
1989 single | tpf | vxworks | win32 | mcf)
1990 target_thread_file=${enable_threads}
1993 echo "${enable_threads} is an unknown thread package" 1>&2
1998 if test x${thread_file} = x; then
1999 # No thread file set by target-specific clauses in config.gcc,
2000 # so use file chosen by default logic above
2001 thread_file=${target_thread_file}
2009 if test x$enable___cxa_atexit = xyes || \
2010 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
2011 if test x$host = x$target; then
2013 # mingw32 doesn't have __cxa_atexit but uses atexit registration
2014 # keyed to flag_use_cxa_atexit
2022 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
2023 [echo "__cxa_atexit can't be enabled on this target"])
2027 # We can't check for __cxa_atexit when building a cross, so assume
2031 if test x$use_cxa_atexit = xyes; then
2032 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
2033 [Define if you want to use __cxa_atexit, rather than atexit, to
2034 register C++ destructors for local statics and global objects.
2035 This is essential for fully standards-compliant handling of
2036 destructors, but requires __cxa_atexit in libc.])
2040 # Look for a file containing extra machine modes.
2041 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
2042 extra_modes_file='$(srcdir)'/config/${extra_modes}
2043 AC_SUBST(extra_modes_file)
2044 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
2045 [Define to the name of a file containing a list of extra machine modes
2046 for this architecture.])
2049 # Convert extra_options into a form suitable for Makefile use.
2052 for f in $extra_options; do
2053 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
2054 all_opt_files="$all_opt_files $srcdir/config/$f"
2056 AC_SUBST(extra_opt_files)
2058 # auto-host.h is the file containing items generated by autoconf and is
2059 # the first file included by config.h.
2060 # If host=build, it is correct to have bconfig include auto-host.h
2061 # as well. If host!=build, we are in error and need to do more
2062 # work to find out the build config parameters.
2063 if test x$host = x$build
2065 build_auto=auto-host.h
2066 HAVE_AUTO_BUILD='# '
2068 # We create a subdir, then run autoconf in the subdir.
2069 # To prevent recursion we set host and build for the new
2070 # invocation of configure to the build for this invocation
2077 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
2078 *) realsrcdir=../${srcdir};;
2080 # Clearing GMPINC is necessary to prevent host headers being
2081 # used by the build compiler. Defining GENERATOR_FILE stops
2082 # system.h from including gmp.h.
2083 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
2084 CXX="${CXX_FOR_BUILD}" CXXFLAGS="${CXXFLAGS_FOR_BUILD}" \
2085 LD="${LD_FOR_BUILD}" LDFLAGS="${LDFLAGS_FOR_BUILD}" \
2086 GMPINC="" CPPFLAGS="${CPPFLAGS_FOR_BUILD} -DGENERATOR_FILE" \
2087 ${realsrcdir}/configure \
2088 --enable-languages=${enable_languages-all} \
2089 ${enable_obsolete+--enable-obsolete="$enable_obsolete"} \
2090 ${enable_option_checking+--enable-option-checking="$enable_option_checking"} \
2091 --target=$target_alias --host=$build_alias \
2092 --build=$build_alias || exit # retaining $tempdir
2094 # We just finished tests for the build machine, so rename
2095 # the file auto-build.h in the gcc directory.
2096 mv auto-host.h ../auto-build.h
2099 build_auto=auto-build.h
2102 AC_SUBST(build_subdir)
2103 AC_SUBST(HAVE_AUTO_BUILD)
2105 tm_file="${tm_file} defaults.h"
2106 tm_p_file="${tm_p_file} tm-preds.h"
2107 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
2108 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
2109 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
2110 # put this back in temporarily.
2111 xm_file="auto-host.h ansidecl.h ${xm_file}"
2118 # Compile in configure arguments.
2119 if test -f configargs.h ; then
2120 # Being re-configured.
2121 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
2122 gcc_reconf_arguments=`echo "$gcc_config_arguments" | sed -e 's/^.*\( : (reconfigured) .*$\)/\1/'`
2123 if [ "$gcc_reconf_arguments" != " : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS" ]; then
2124 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
2127 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
2130 # Double all backslashes and backslash all quotes to turn
2131 # gcc_config_arguments into a C string.
2132 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
2133 $gcc_config_arguments
2135 gcc_config_arguments_str=`cat conftest.out`
2138 cat > configargs.h <<EOF
2139 /* Generated automatically. */
2140 static const char configuration_arguments[] = "$gcc_config_arguments_str";
2141 static const char thread_model[] = "$thread_file";
2143 static const struct {
2144 const char *name, *value;
2145 } configure_default_options[] = $configure_default_options;
2150 gcc_BASEVER=`cat $srcdir/BASE-VER`
2151 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
2152 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
2153 if test -f $srcdir/REVISION ; then
2154 gcc_REVISION=`cat $srcdir/REVISION`
2158 cat > plugin-version.h <<EOF
2159 #include "configargs.h"
2161 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
2162 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
2163 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
2164 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
2166 static char basever[] = "$gcc_BASEVER";
2167 static char datestamp[] = "$gcc_DATESTAMP";
2168 static char devphase[] = "$gcc_DEVPHASE";
2169 static char revision[] = "$gcc_REVISION";
2171 /* FIXME plugins: We should make the version information more precise.
2172 One way to do is to add a checksum. */
2174 static struct plugin_gcc_version gcc_version = {basever, datestamp,
2176 configuration_arguments};
2180 # Determine what GCC version number to use in filesystem paths.
2183 # Internationalization
2184 ZW_GNU_GETTEXT_SISTER_DIR
2186 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
2187 # -liconv on the link line twice.
2188 case "$LIBINTL" in *$LIBICONV*)
2192 AC_ARG_ENABLE(secureplt,
2193 [AS_HELP_STRING([--enable-secureplt],
2194 [enable -msecure-plt by default for PowerPC])],
2197 AC_ARG_ENABLE(mingw-wildcard,
2198 [AS_HELP_STRING([--enable-mingw-wildcard],
2199 [Set whether to expand wildcard on command-line.
2200 Default to platform configuration])],
2201 [],[enable_mingw_wildcard=platform])
2202 AS_IF([test x"$enable_mingw_wildcard" != xplatform ],
2203 [AC_DEFINE_UNQUOTED(MINGW_DOWILDCARD,
2204 $(test x"$enable_mingw_wildcard" = xno; echo $?),
2205 [Value to set mingw's _dowildcard to.])])
2207 AC_ARG_ENABLE(large-address-aware,
2208 [AS_HELP_STRING([--enable-large-address-aware],
2209 [Link mingw executables with --large-address-aware])])
2210 AS_IF([test x"$enable_large_address_aware" = xyes],
2211 [AC_DEFINE([MINGW_DEFAULT_LARGE_ADDR_AWARE], 1,
2212 [Define if we should link mingw executables with --large-address-aware])])
2214 AC_ARG_ENABLE(leading-mingw64-underscores,
2215 AS_HELP_STRING([--enable-leading-mingw64-underscores],
2216 [enable leading underscores on 64 bit mingw targets]),
2218 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
2219 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
2220 [Define if we should use leading underscore on 64 bit mingw targets])])
2223 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
2226 AC_ARG_ENABLE(frame-pointer,
2227 [AS_HELP_STRING([--enable-frame-pointer],
2228 [enable -fno-omit-frame-pointer by default for x86])], [],
2231 linux* | gnu* | darwin[[8912]]* | cygwin* | mingw*)
2232 # Enable -fomit-frame-pointer by default for these systems with DWARF2.
2233 enable_frame_pointer=no
2236 enable_frame_pointer=yes
2242 i[[34567]]86-*-* | x86_64-*-*)
2243 if test "x$enable_cld" = xyes; then
2244 tm_defines="${tm_defines} USE_IX86_CLD=1"
2246 if test "x$enable_frame_pointer" = xyes; then
2247 tm_defines="${tm_defines} USE_IX86_FRAME_POINTER=1"
2252 # Windows32 Registry support for specifying GCC installation paths.
2253 AC_ARG_ENABLE(win32-registry,
2254 [AS_HELP_STRING([--disable-win32-registry],
2255 [disable lookup of installation paths in the
2256 Registry on Windows hosts])
2257 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
2258 AS_HELP_STRING([--enable-win32-registry=KEY],
2259 [use KEY instead of GCC version as the last portion
2260 of the registry key])],,)
2263 win32 | pe | cygwin* | mingw32*)
2264 if test "x$enable_win32_registry" != xno; then
2265 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
2268 if test "x$enable_win32_registry" != xno; then
2269 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
2270 [Define to 1 if installation paths should be looked up in the Windows
2271 Registry. Ignored on non-Windows hosts.])
2273 if test "x$enable_win32_registry" != xyes \
2274 && test "x$enable_win32_registry" != x; then
2275 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
2276 [Define to be the last component of the Windows registry key under which
2277 to look for installation paths. The full key used will be
2278 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
2279 The default is the GCC version number.])
2285 # Get an absolute path to the GCC top-level source directory
2286 holddir=`${PWDCMD-pwd}`
2288 topdir=`${PWDCMD-pwd}`
2291 # Conditionalize the makefile for this host machine.
2293 for f in ${host_xmake_file}
2295 if test -f ${srcdir}/config/$f
2297 xmake_file="${xmake_file} \$(srcdir)/config/$f"
2301 # Conditionalize the makefile for this target machine.
2303 for f in ${tmake_file}
2305 if test -f ${srcdir}/config/$f
2307 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
2310 tmake_file="${tmake_file_}${omp_device_property_tmake_file}"
2312 out_object_file=`basename $out_file .cc`.o
2313 common_out_object_file=`basename $common_out_file .cc`.o
2315 tm_file_list="options.h"
2316 tm_include_list="options.h insn-constants.h"
2317 for f in $tm_file; do
2320 f=`echo $f | sed 's/^..//'`
2321 tm_file_list="${tm_file_list} $f"
2322 tm_include_list="${tm_include_list} $f"
2325 tm_file_list="${tm_file_list} \$(srcdir)/$f"
2326 tm_include_list="${tm_include_list} $f"
2329 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
2330 tm_include_list="${tm_include_list} config/$f"
2337 for f in $tm_p_file; do
2340 tm_p_file_list="${tm_p_file_list} $f"
2341 tm_p_include_list="${tm_p_include_list} $f"
2344 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
2345 tm_p_include_list="${tm_p_include_list} config/$f"
2351 for f in $tm_d_file; do
2354 tm_d_file_list="${tm_d_file_list} \$(srcdir)/config/$f"
2355 tm_d_include_list="${tm_d_include_list} config/$f"
2362 for f in $xm_file; do
2365 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
2366 xm_include_list="${xm_include_list} $f"
2369 xm_file_list="${xm_file_list} $f"
2370 xm_include_list="${xm_include_list} $f"
2373 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
2374 xm_include_list="${xm_include_list} config/$f"
2380 host_xm_include_list=
2381 for f in $host_xm_file; do
2384 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
2385 host_xm_include_list="${host_xm_include_list} $f"
2388 host_xm_file_list="${host_xm_file_list} $f"
2389 host_xm_include_list="${host_xm_include_list} $f"
2392 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
2393 host_xm_include_list="${host_xm_include_list} config/$f"
2399 for f in $build_xm_file; do
2402 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
2403 build_xm_include_list="${build_xm_include_list} $f"
2405 auto-build.h | auto-host.h )
2406 build_xm_file_list="${build_xm_file_list} $f"
2407 build_xm_include_list="${build_xm_include_list} $f"
2410 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
2411 build_xm_include_list="${build_xm_include_list} config/$f"
2416 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
2417 # cross-compiler which does not use the native headers and libraries.
2418 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
2419 CROSS= AC_SUBST(CROSS)
2420 ALL=all.internal AC_SUBST(ALL)
2421 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
2422 BUILD_SYSTEM_HEADER_DIR=$SYSTEM_HEADER_DIR AC_SUBST(BUILD_SYSTEM_HEADER_DIR)
2424 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x ||
2425 test x$build != x$host || test "x$with_build_sysroot" != x; then
2426 if test "x$with_build_sysroot" != x; then
2427 BUILD_SYSTEM_HEADER_DIR=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
2429 BUILD_SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2432 if test x$host != x$target
2434 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
2436 SYSTEM_HEADER_DIR=$BUILD_SYSTEM_HEADER_DIR
2437 elif test "x$TARGET_SYSTEM_ROOT" != x; then
2438 SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2441 if test "x$with_build_sysroot" != "x"; then
2442 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
2443 elif test "x$with_sysroot" = x; then
2444 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
2445 elif test "x$with_sysroot" = xyes; then
2446 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
2448 target_header_dir="${with_sysroot}${native_system_header_dir}"
2451 target_header_dir=${native_system_header_dir}
2454 # If this is a cross-compiler that does not
2455 # have its own set of headers then define
2458 # If this is using newlib, without having the headers available now,
2459 # then define inhibit_libc in LIBGCC2_CFLAGS.
2460 # This prevents libgcc2 from containing any code which requires libc
2462 : ${inhibit_libc=false}
2463 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
2464 test x$with_newlib = xyes ; } &&
2465 { test "x$with_headers" = xno || test ! -f "$target_header_dir/stdio.h"; } ; then
2468 AC_SUBST(inhibit_libc)
2470 # When building gcc with a cross-compiler, we need to adjust things so
2471 # that the generator programs are still built with the native compiler.
2472 # Also, we cannot run fixincludes.
2474 # These are the normal (build=host) settings:
2475 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
2476 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
2477 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
2478 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
2479 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
2480 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
2482 # And these apply if build != host, or we are generating coverage data
2483 if test x$build != x$host || test "x$coverage_flags" != x
2485 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS-$@) $(CFLAGS_FOR_BUILD)'
2486 BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS-$@) $(CXXFLAGS_FOR_BUILD)'
2487 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
2491 if test x$enable_fixincludes = xno;
2496 # Expand extra_headers to include complete path.
2497 # This substitutes for lots of t-* files.
2499 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
2500 for file in ${extra_headers} ; do
2501 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
2504 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
2505 if test x"$use_gcc_tgmath" = xyes
2506 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
2509 # Define collect2 in Makefile.
2510 case $host_can_use_collect2 in
2512 *) collect2='collect2$(exeext)' ;;
2514 AC_SUBST([collect2])
2516 # Add a definition of USE_COLLECT2 if system wants one.
2517 case $use_collect2 in
2518 no) use_collect2= ;;
2521 host_xm_defines="${host_xm_defines} USE_COLLECT2"
2522 xm_defines="${xm_defines} USE_COLLECT2"
2523 case $host_can_use_collect2 in
2525 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
2531 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
2532 [Define to the name of the LTO plugin DSO that must be
2533 passed to the linker's -plugin=LIB option.])
2535 # ---------------------------
2536 # Assembler & linker features
2537 # ---------------------------
2539 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
2540 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
2541 # However when ld-new is first executed from the build tree, libtool will
2542 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
2543 # to the build tree. While doing this we need to use the previous-stage
2544 # linker, or we have an infinite loop. The presence of a shell script as
2545 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
2546 # the gcc/collect-ld script. So we need to know how libtool works, or
2547 # exec-tool will fail.
2549 m4_defun([_LT_CONFIG_COMMANDS], [])
2552 AC_SUBST(enable_fast_install)
2554 # Identify the assembler which will work hand-in-glove with the newly
2555 # built GCC, so that we can examine its features. This is the assembler
2556 # which will be driven by the driver program.
2558 # If build != host, and we aren't building gas in-tree, we identify a
2559 # build->target assembler and hope that it will have the same features
2560 # as the host->target assembler we'll be using.
2561 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
2563 m4_pattern_allow([AS_FOR_TARGET])dnl
2564 AS_VAR_SET_IF(gcc_cv_as,, [
2565 if test -x "$DEFAULT_ASSEMBLER"; then
2566 gcc_cv_as="$DEFAULT_ASSEMBLER"
2567 elif test -f $gcc_cv_as_gas_srcdir/configure.ac \
2568 && test -f ../gas/Makefile \
2569 && test x$build = x$host; then
2570 gcc_cv_as=../gas/as-new$build_exeext
2571 elif test -x as$build_exeext; then
2572 # Build using assembler in the current directory.
2573 gcc_cv_as=./as$build_exeext
2574 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
2575 gcc_cv_as="$AS_FOR_TARGET"
2577 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
2580 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
2581 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
2582 case "$ORIGINAL_AS_FOR_TARGET" in
2583 ./as | ./as$build_exeext) ;;
2584 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2589 [[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]],
2590 [case "${enableval}" in
2596 install_gold_as_default=no
2598 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
2599 [case "${enableval}" in
2601 install_gold_as_default=yes
2604 if test x${default_ld} != x; then
2605 install_gold_as_default=yes
2611 AC_MSG_ERROR([invalid --enable-gold argument])
2615 # Identify the linker which will work hand-in-glove with the newly
2616 # built GCC, so that we can examine its features. This is the linker
2617 # which will be driven by the driver program.
2619 # If build != host, and we aren't building gas in-tree, we identify a
2620 # build->target linker and hope that it will have the same features
2621 # as the host->target linker we'll be using.
2622 gcc_cv_gld_major_version=
2623 gcc_cv_gld_minor_version=
2624 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2625 gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold
2626 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2628 AS_VAR_SET_IF(gcc_cv_ld,, [
2629 if test -x "$DEFAULT_LINKER"; then
2630 gcc_cv_ld="$DEFAULT_LINKER"
2631 elif test $install_gold_as_default = yes \
2632 && test -f $gcc_cv_ld_gold_srcdir/configure.ac \
2633 && test -f ../gold/Makefile \
2634 && test x$build = x$host; then
2635 gcc_cv_ld=../gold/ld-new$build_exeext
2636 elif test -f $gcc_cv_ld_gld_srcdir/configure.ac \
2637 && test -f ../ld/Makefile \
2638 && test x$build = x$host; then
2639 gcc_cv_ld=../ld/ld-new$build_exeext
2640 elif test -x collect-ld$build_exeext; then
2641 # Build using linker in the current directory.
2642 gcc_cv_ld=./collect-ld$build_exeext
2643 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2644 gcc_cv_ld="$LD_FOR_TARGET"
2646 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2649 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2650 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2651 # if the PLUGIN_LD is set ld-new, just have it as ld
2652 # as that is the installed named.
2653 if test x$PLUGIN_LD_SUFFIX = xld-new \
2654 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2657 AC_ARG_WITH(plugin-ld,
2658 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2659 [if test x"$withval" != x; then
2660 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2661 PLUGIN_LD_SUFFIX="$withval"
2663 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2664 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2666 # Check to see if we are using gold instead of ld
2667 AC_MSG_CHECKING(whether we are using gold)
2669 if test x$gcc_cv_ld != x; then
2670 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2671 | grep "GNU gold" > /dev/null; then
2675 AC_MSG_RESULT($ld_is_gold)
2677 # Check to see if we are using mold instead of ld
2678 AC_MSG_CHECKING(whether we are using mold)
2680 if test x$gcc_cv_ld != x; then
2681 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2682 | grep "mold" > /dev/null; then
2686 AC_MSG_RESULT($ld_is_mold)
2689 AC_MSG_CHECKING(gold linker with split stack support as non default)
2690 # Check to see if default ld is not gold, but gold is
2691 # available and has support for split stack. If gcc was configured
2692 # with gold then no checking is done.
2694 if test x$ld_is_gold = xno && which ${gcc_cv_ld}.gold >/dev/null 2>&1; then
2696 # For platforms other than powerpc64*, enable as appropriate.
2699 ld_gold=`which ${gcc_cv_ld}.gold`
2700 # Make sure this gold has minimal split stack support
2701 if $ld_gold --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then
2702 ld_vers=`$ld_gold --version | sed 1q`
2703 gold_vers=`echo $ld_vers | sed -n \
2704 -e 's,^[[^)]]*[[ ]]\([[0-9]][[0-9]]*\.[[0-9]][[0-9]]*[[^)]]*\)) .*$,\1,p'`
2706 # check that the gold version contains the complete split stack support
2707 # on powerpc64 big and little endian
2709 case "$gold_vers" in
2710 2.25.[[1-9]]*|2.2[[6-9]][[.0-9]]*|2.[[3-9]][[.0-9]]*|[[3-9]].[[.0-9]]*) gold_non_default=yes
2712 *) gold_non_default=no
2718 if test $gold_non_default = yes; then
2719 AC_DEFINE(HAVE_GOLD_NON_DEFAULT_SPLIT_STACK, 1,
2720 [Define if the gold linker supports split stack and is available as a non-default])
2723 AC_MSG_RESULT($gold_non_default)
2725 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2726 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2727 case "$ORIGINAL_LD_FOR_TARGET" in
2728 ./collect-ld | ./collect-ld$build_exeext) ;;
2729 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2732 AC_MSG_CHECKING(what linker to use)
2733 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2734 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2735 # Single tree build which includes ld. We want to prefer it
2736 # over whatever linker top-level may have detected, since
2737 # we'll use what we're building after installation anyway.
2738 AC_MSG_RESULT(newly built ld)
2740 in_tree_ld_is_elf=no
2741 if (grep 'EMUL = .*elf' ../ld/Makefile \
2742 || grep 'EMUL = .*linux' ../ld/Makefile \
2743 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2744 in_tree_ld_is_elf=yes
2745 elif test "$ld_is_gold" = yes; then
2746 in_tree_ld_is_elf=yes
2748 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
2751 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2752 if test x$gcc_cv_gld_version != x; then
2756 case $gcc_cv_gld_version in
2759 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2762 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2763 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2765 ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext
2766 ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext
2768 AC_MSG_RESULT($gcc_cv_ld)
2770 gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext`
2771 ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext
2772 ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext
2775 AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET)
2776 AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET)
2778 # Figure out what nm we will be using.
2779 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2780 AS_VAR_SET_IF(gcc_cv_nm,, [
2781 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2782 && test -f ../binutils/Makefile \
2783 && test x$build = x$host; then
2784 gcc_cv_nm=../binutils/nm-new$build_exeext
2785 elif test -x nm$build_exeext; then
2786 gcc_cv_nm=./nm$build_exeext
2787 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2788 gcc_cv_nm="$NM_FOR_TARGET"
2790 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2793 AC_MSG_CHECKING(what nm to use)
2794 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2795 # Single tree build which includes binutils.
2796 AC_MSG_RESULT(newly built nm)
2799 AC_MSG_RESULT($gcc_cv_nm)
2803 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2804 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2805 case "$ORIGINAL_NM_FOR_TARGET" in
2806 ./nm | ./nm$build_exeext) ;;
2807 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2811 # Figure out what objdump we will be using.
2812 AS_VAR_SET_IF(gcc_cv_objdump,, [
2813 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2814 && test -f ../binutils/Makefile \
2815 && test x$build = x$host; then
2816 # Single tree build which includes binutils.
2817 gcc_cv_objdump=../binutils/objdump$build_exeext
2818 elif test -x objdump$build_exeext; then
2819 gcc_cv_objdump=./objdump$build_exeext
2820 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2821 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2823 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2826 AC_MSG_CHECKING(what objdump to use)
2827 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2828 # Single tree build which includes binutils.
2829 AC_MSG_RESULT(newly built objdump)
2830 elif test x$gcc_cv_objdump = x; then
2831 AC_MSG_RESULT(not found)
2833 AC_MSG_RESULT($gcc_cv_objdump)
2836 # Figure out what readelf we will be using.
2837 AS_VAR_SET_IF(gcc_cv_readelf,, [
2838 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2839 && test -f ../binutils/Makefile \
2840 && test x$build = x$host; then
2841 # Single tree build which includes binutils.
2842 gcc_cv_readelf=../binutils/readelf$build_exeext
2843 elif test -x readelf$build_exeext; then
2844 gcc_cv_readelf=./readelf$build_exeext
2845 elif ( set dummy $READELF_FOR_TARGET; test -x $[2] ); then
2846 gcc_cv_readelf="$READELF_FOR_TARGET"
2848 AC_PATH_PROG(gcc_cv_readelf, $READELF_FOR_TARGET)
2851 AC_MSG_CHECKING(what readelf to use)
2852 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2853 # Single tree build which includes binutils.
2854 AC_MSG_RESULT(newly built readelf)
2855 elif test x$gcc_cv_readelf = x; then
2856 AC_MSG_RESULT(not found)
2858 AC_MSG_RESULT($gcc_cv_readelf)
2861 # Figure out what otool we will be using.
2862 AS_VAR_SET_IF(gcc_cv_otool,, [
2863 if test -x otool$build_exeext; then
2864 gcc_cv_otool=./otool$build_exeext
2865 elif ( set dummy $OTOOL_FOR_TARGET; test -x $[2] ); then
2866 gcc_cv_otool="$OTOOL_FOR_TARGET"
2868 AC_PATH_PROG(gcc_cv_otool, $OTOOL_FOR_TARGET)
2871 AC_MSG_CHECKING(what otool to use)
2872 if test x$gcc_cv_otool = x; then
2873 AC_MSG_RESULT(not found)
2875 AC_MSG_RESULT($gcc_cv_otool)
2878 # Figure out the dsymutil we will use.
2879 AS_VAR_SET_IF(gcc_cv_dsymutil,, [
2880 if test -x "$DEFAULT_DSYMUTIL"; then
2881 gcc_cv_dsymutil="$DEFAULT_DSYMUTIL"
2882 elif test -x dsymutil$build_exeext; then
2883 gcc_cv_dsymutil=./dsymutil$build_exeext
2884 elif ( set dummy $DSYMUTIL_FOR_TARGET; test -x $[2] ); then
2885 gcc_cv_dsymutil=$DSYMUTIL_FOR_TARGET
2886 elif ( set dummy $DSYMUTIL; test -x $[2] ); then
2887 gcc_cv_dsymutil=$DSYMUTIL
2889 AC_PATH_PROG(gcc_cv_dsymutil, $DSYMUTIL_FOR_TARGET)
2892 ORIGINAL_DSYMUTIL_FOR_TARGET=$gcc_cv_dsymutil
2893 AC_SUBST(ORIGINAL_DSYMUTIL_FOR_TARGET)
2894 case "$ORIGINAL_DSYMUTIL_FOR_TARGET" in
2895 ./dsymutil | ./dsymutil$build_exeext) ;;
2896 *) AC_CONFIG_FILES(dsymutil:exec-tool.in, [chmod +x dsymutil]) ;;
2899 # Figure out what assembler alignment features are present.
2900 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,,
2903 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2904 [Define if your assembler supports .balign and .p2align.])])
2906 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,,
2908 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2909 [Define if your assembler supports specifying the maximum number
2910 of bytes to skip when using the GAS .p2align command.])])
2912 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,,
2914 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2915 [Define if your assembler supports .literal16.])])
2917 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,,
2918 [conftest_label1: .word 0
2920 conftest_label2: .word 0
2922 [if test x$gcc_cv_nm != x; then
2923 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2924 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2925 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2927 else gcc_cv_as_subsection_m1=yes
2929 rm -f conftest.nm1 conftest.nm2
2931 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2932 [Define if your assembler supports .subsection and .subsection -1 starts
2933 emitting at the beginning of your section.])])
2935 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,,
2937 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2939 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,,
2940 [ .weakref foobar, barfnot],,
2941 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2943 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,,
2945 .NSUBSPA $CODE$,COMDAT],,
2946 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2948 # .hidden needs to be supported in both the assembler and the linker,
2949 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2950 # This is irritatingly difficult to feature test for; we have to check the
2951 # date string after the version number. If we've got an in-tree
2952 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2954 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2957 conftest_s=' .globl foobar,hidden'
2960 conftest_s=' .hidden foobar
2964 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,, [$conftest_s])
2967 # Darwin as has some visibility support, though with a different syntax.
2968 gcc_cv_as_hidden=yes
2972 # gnu_indirect_function type is an extension proposed at
2973 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2974 # selection of function implementation
2975 AC_ARG_ENABLE(gnu-indirect-function,
2976 [AS_HELP_STRING([--enable-gnu-indirect-function],
2977 [enable the use of the @gnu_indirect_function to glibc systems])],
2978 [case $enable_gnu_indirect_function in
2980 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2981 Valid choices are 'yes' and 'no'.]) ;;
2983 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2987 AC_MSG_CHECKING(linker ifunc IRELATIVE support)
2988 cat > conftest.s <<EOF
2990 .type foo_resolver, @function
2993 .size foo_resolver, .-foo_resolver
2996 .type foo, %gnu_indirect_function
2997 .set foo, foo_resolver
3000 .type bar, @function
3006 if test x$gcc_cv_as != x \
3007 && test x$gcc_cv_ld != x \
3008 && test x$gcc_cv_readelf != x \
3009 && $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
3010 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1 \
3011 && $gcc_cv_readelf --relocs --wide conftest \
3012 | grep R_RISCV_IRELATIVE > /dev/null 2>&1; then
3013 enable_gnu_indirect_function=yes
3015 rm -f conftest conftest.o conftest.s
3016 AC_MSG_RESULT($enable_gnu_indirect_function)
3020 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
3021 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
3022 [Define if your system supports gnu indirect functions.])
3026 if test $in_tree_ld != yes ; then
3027 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
3028 if echo "$ld_ver" | grep GNU > /dev/null; then
3029 if test x"$ld_is_gold" = xyes; then
3030 # GNU gold --version looks like this:
3032 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
3034 # We extract the binutils version which is more familiar and specific
3035 # than the gold version.
3036 ld_vers=`echo $ld_ver | sed -n \
3037 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3039 # GNU ld --version looks like this:
3041 # GNU ld (GNU Binutils) 2.21.51.20110225
3042 ld_vers=`echo $ld_ver | sed -n \
3043 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3045 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)\(-*\)\([01][0-9]\)\2\([0-3][0-9]\).*$,\1\3\4,p'`
3046 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3047 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3048 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
3052 # Solaris 2 ld -V output looks like this for a regular version:
3054 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
3056 # but test versions add stuff at the end:
3058 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
3060 # ld and ld.so.1 are guaranteed to be updated in lockstep, so ld version
3061 # numbers can be used in ld.so.1 feature checks even if a different
3062 # linker is configured.
3063 ld_ver=`$gcc_cv_ld -V 2>&1`
3064 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
3065 ld_vers=`echo $ld_ver | sed -n \
3066 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
3067 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3068 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3076 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
3077 [[if test $in_tree_ld = yes ; then
3079 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
3080 && test $in_tree_ld_is_elf = yes; then
3081 gcc_cv_ld_hidden=yes
3084 gcc_cv_ld_hidden=yes
3085 if test x"$ld_is_gold" = xyes; then
3087 elif test x"$ld_is_mold" = xyes; then
3089 elif echo "$ld_ver" | grep GNU > /dev/null; then
3090 if test 0"$ld_date" -lt 20020404; then
3091 if test -n "$ld_date"; then
3092 # If there was date string, but was earlier than 2002-04-04, fail
3094 elif test -z "$ld_vers"; then
3095 # If there was no date string nor ld version number, something is wrong
3098 test -z "$ld_vers_patch" && ld_vers_patch=0
3099 if test "$ld_vers_major" -lt 2; then
3101 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
3102 gcc_cv_ld_hidden="no"
3103 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
3111 gcc_cv_ld_hidden=yes
3114 # Darwin ld has some visibility support.
3115 gcc_cv_ld_hidden=yes
3117 hppa64*-*-hpux* | ia64*-*-hpux*)
3118 gcc_cv_ld_hidden=yes
3121 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
3122 # .symbolic was only added in Solaris 9 12/02.
3123 gcc_cv_ld_hidden=yes
3131 libgcc_visibility=no
3132 AC_SUBST(libgcc_visibility)
3133 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
3134 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
3135 libgcc_visibility=yes
3136 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
3137 [Define if your assembler and linker support .hidden.])
3140 AC_MSG_CHECKING(linker read-only and read-write section mixing)
3141 gcc_cv_ld_ro_rw_mix=unknown
3142 if test $in_tree_ld = yes ; then
3143 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
3144 && test $in_tree_ld_is_elf = yes; then
3145 gcc_cv_ld_ro_rw_mix=read-write
3147 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3148 echo '.section myfoosect, "a"' > conftest1.s
3149 echo '.section myfoosect, "aw"' > conftest2.s
3150 echo '.byte 1' >> conftest2.s
3151 echo '.section myfoosect, "a"' > conftest3.s
3152 echo '.byte 0' >> conftest3.s
3153 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
3154 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
3155 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
3156 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
3157 conftest2.o conftest3.o > /dev/null 2>&1; then
3158 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
3159 | sed -e '/myfoosect/!d' -e N`
3160 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
3161 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
3162 gcc_cv_ld_ro_rw_mix=read-only
3164 gcc_cv_ld_ro_rw_mix=read-write
3169 rm -f conftest.* conftest[123].*
3172 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
3173 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
3174 [Define if your linker links a mix of read-only
3175 and read-write sections into a read-write section.])
3177 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
3179 gcc_AC_INITFINI_ARRAY
3181 # Check if we have .[us]leb128, and support symbol arithmetic with it.
3182 # Older versions of GAS and some non-GNU assemblers, have a bugs handling
3183 # these directives, even when they appear to accept them.
3184 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,,
3191 .uleb128 0x8000000000000000
3194 if test "x$gcc_cv_objdump" != x; then
3195 if $gcc_cv_objdump -s conftest.o 2>/dev/null \
3196 | grep '04800a8e 78808080 80808080 808001' >/dev/null; then
3197 gcc_cv_as_leb128=yes
3199 elif test "x$gcc_cv_otool" != x; then
3200 if $gcc_cv_otool -d conftest.o 2>/dev/null \
3201 | grep '04 80 0a 8e 78 80 80 80 80 80 80 80 80 80 01' >/dev/null; then
3202 gcc_cv_as_leb128=yes
3205 # play safe, assume the assembler is broken.
3209 [AC_DEFINE(HAVE_AS_LEB128, 1,
3210 [Define if your assembler supports .sleb128 and .uleb128.])],
3211 [AC_DEFINE(HAVE_AS_LEB128, 0,
3212 [Define if your assembler supports .sleb128 and .uleb128.])])
3214 # Determine if an .eh_frame section is read-only.
3215 gcc_fn_eh_frame_ro () {
3216 $gcc_cv_as $1 -o conftest.o conftest.s > /dev/null 2>&1 && \
3217 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
3218 sed -e '/.eh_frame/!d' -e N | grep READONLY > /dev/null
3221 # Check if we have assembler support for unwind directives.
3222 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,,
3228 .cfi_escape 1, 2, 3, 4, 5
3232 # If the linker used on Solaris (like Sun ld) isn't capable of merging
3233 # read-only and read-write sections, we need to make sure that the
3234 # assembler used emits read-write .eh_frame sections.
3235 if test "x$gcc_cv_ld_ro_rw_mix" = xread-write; then
3236 gcc_cv_as_cfi_directive=yes
3237 elif test "x$gcc_cv_objdump" = x; then
3238 # No objdump, err on the side of caution.
3239 gcc_cv_as_cfi_directive=no
3241 if test x$gas = xyes; then
3249 sparc*-*-solaris2.*)
3250 # On Solaris/SPARC, .eh_frame sections should always be read-write.
3251 if gcc_fn_eh_frame_ro $as_32_opt \
3252 || gcc_fn_eh_frame_ro $as_64_opt; then
3253 gcc_cv_as_cfi_directive=no
3255 gcc_cv_as_cfi_directive=yes
3258 i?86-*-solaris2.* | x86_64-*-solaris2.*)
3259 # On Solaris/x86, make sure that GCC and assembler agree on using
3260 # read-only .eh_frame sections for 64-bit.
3261 if gcc_fn_eh_frame_ro $as_32_opt; then
3262 gcc_cv_as_cfi_directive=no
3263 elif gcc_fn_eh_frame_ro $as_64_opt; then
3264 gcc_cv_as_cfi_directive=yes
3266 gcc_cv_as_cfi_directive=no
3273 gcc_cv_as_cfi_directive=yes
3276 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
3277 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,,
3280 .cfi_adjust_cfa_offset 64
3282 .cfi_adjust_cfa_offset 128
3285 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
3286 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
3287 gcc_cv_as_cfi_advance_working=yes
3291 # no objdump, err on the side of caution
3292 gcc_cv_as_cfi_advance_working=no
3294 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
3295 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
3296 [`if test $gcc_cv_as_cfi_directive = yes \
3297 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
3298 [Define 0/1 if your assembler supports CFI directives.])
3300 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
3301 gcc_GAS_CHECK_FEATURE([cfi personality directive],
3302 gcc_cv_as_cfi_personality_directive,,
3305 .cfi_personality 0, symbol
3307 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
3308 [`if test $gcc_cv_as_cfi_personality_directive = yes; then echo 1; else echo 0; fi`],
3309 [Define 0/1 if your assembler supports .cfi_personality.])
3311 gcc_GAS_CHECK_FEATURE([cfi sections directive],
3312 gcc_cv_as_cfi_sections_directive,,
3314 .cfi_sections .debug_frame, .eh_frame
3318 win32 | pe | cygwin* | mingw32*)
3319 # Need to check that we generated the correct relocation for the
3320 # .debug_frame section. This was fixed for binutils 2.21.
3321 gcc_cv_as_cfi_sections_directive=no
3322 if test "x$gcc_cv_objdump" != x; then
3323 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
3324 grep secrel > /dev/null; then
3325 gcc_cv_as_cfi_sections_directive=yes
3330 gcc_cv_as_cfi_sections_directive=yes
3333 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
3334 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
3335 [`if test $gcc_cv_as_cfi_sections_directive = yes; then echo 1; else echo 0; fi`],
3336 [Define 0/1 if your assembler supports .cfi_sections.])
3338 # GAS versions up to and including 2.11.0 may mis-optimize
3340 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,,
3347 .section .eh_frame,"aw",@progbits
3349 .4byte .LECIE1-.LSCIE1
3363 .4byte .LEFDE1-.LASFDE1
3365 .4byte .LASFDE1-__FRAME_BEGIN__
3373 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
3374 cat > conftest.lit <<EOF
3375 0000 10000000 00000000 017a0001 781a0004 .........z..x...
3376 0010 01000000 12000000 18000000 00000000 ................
3377 0020 08000000 04080000 0044 .........D @&t@
3379 cat > conftest.big <<EOF
3380 0000 00000010 00000000 017a0001 781a0004 .........z..x...
3381 0010 00000001 00000012 00000018 00000000 ................
3382 0020 00000008 04000000 0844 .........D @&t@
3384 # If the assembler didn't choke, and we can objdump,
3385 # and we got the correct data, then succeed.
3386 # The text in the here-document typically retains its unix-style line
3387 # endings, while the output of objdump will use host line endings.
3388 # Therefore, use diff -b for the comparisons.
3389 if test x$gcc_cv_objdump != x \
3390 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
3391 | tail -3 > conftest.got \
3392 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
3393 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
3395 gcc_cv_as_eh_frame=yes
3396 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
3397 gcc_cv_as_eh_frame=buggy
3399 # Uh oh, what do we do now?
3400 gcc_cv_as_eh_frame=no
3403 if test $gcc_cv_as_eh_frame = buggy; then
3404 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
3405 [Define if your assembler mis-optimizes .eh_frame data.])
3408 # Test if the assembler supports the section flag 'e' or #exclude for
3409 # specifying an excluded section.
3410 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_e,
3414 if test $gcc_cv_as_section_exclude_e = no; then
3416 # Solaris as uses #exclude instead.
3420 conftest_s='.section "foo1", #exclude'
3422 i?86-*-solaris2* | x86_64-*-solaris2*)
3423 conftest_s='.section foo1, #exclude'
3428 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_hash,,
3432 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3433 [`if test $gcc_cv_as_section_exclude_e = yes || test $gcc_cv_as_section_exclude_hash = yes; then echo 1; else echo 0; fi`],
3434 [Define if your assembler supports specifying the exclude section flag.])
3436 # Test if the assembler supports the section flag 'R' for specifying
3437 # section with SHF_GNU_RETAIN.
3439 # Solaris may use GNU assembler with Solairs ld. Even if GNU
3440 # assembler supports the section flag 'R', it doesn't mean that
3441 # Solairs ld supports it.
3443 gcc_cv_as_shf_gnu_retain=no
3446 gcc_GAS_CHECK_FEATURE([section 'R' flag], gcc_cv_as_shf_gnu_retain,
3448 [.section .foo,"awR",%progbits
3452 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_GNU_RETAIN,
3453 [`if test $gcc_cv_as_shf_gnu_retain = yes; then echo 1; else echo 0; fi`],
3454 [Define 0/1 if your assembler supports marking sections with SHF_GNU_RETAIN flag.])
3456 # Test if the assembler supports the section flag 'o' for specifying
3457 # section with link-order.
3459 # Solaris may use GNU assembler with Solairs ld. Even if GNU
3460 # assembler supports the section flag 'o', it doesn't mean that
3461 # Solairs ld supports it.
3463 gcc_cv_as_section_link_order=no
3466 gcc_GAS_CHECK_FEATURE([section 'o' flag], gcc_cv_as_section_link_order,
3470 .section __patchable_function_entries,"awo",%progbits,.foo
3474 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_LINK_ORDER,
3475 [`if test $gcc_cv_as_section_link_order = yes; then echo 1; else echo 0; fi`],
3476 [Define 0/1 if your assembler supports 'o' flag in .section directive.])
3478 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
3480 [.section .rodata.str, "aMS", @progbits, 1])
3481 if test $gcc_cv_as_shf_merge = no; then
3482 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
3484 [.section .rodata.str, "aMS", %progbits, 1])
3486 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
3487 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
3488 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
3490 gcc_cv_ld_aligned_shf_merge=yes
3492 # SHF_MERGE support is broken in Solaris ld up to Solaris 11.3/SPARC for
3494 sparc*-*-solaris2.11*)
3495 if test x"$gnu_ld" = xno \
3496 && test "$ld_vers_major" -lt 2 && test "$ld_vers_minor" -lt 3159; then
3497 gcc_cv_ld_aligned_shf_merge=no
3501 AC_DEFINE_UNQUOTED(HAVE_LD_ALIGNED_SHF_MERGE,
3502 [`if test $gcc_cv_ld_aligned_shf_merge = yes; then echo 1; else echo 0; fi`],
3503 [Define 0/1 if your linker supports the SHF_MERGE flag with section alignment > 1.])
3505 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
3506 gcc_cv_as_comdat_group,
3508 [.section .text,"axG",@progbits,.foo,comdat])
3509 if test $gcc_cv_as_comdat_group = yes; then
3510 gcc_cv_as_comdat_group_percent=no
3511 gcc_cv_as_comdat_group_group=no
3513 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
3514 gcc_cv_as_comdat_group_percent,
3516 [.section .text,"axG",%progbits,.foo,comdat])
3517 if test $gcc_cv_as_comdat_group_percent = yes; then
3518 gcc_cv_as_comdat_group_group=no
3521 # Sun as uses a completely different syntax.
3526 .group foo,".text%foo",#comdat
3527 .section ".text%foo", #alloc,#execinstr,#progbits
3532 i?86-*-solaris2* | x86_64-*-solaris2*)
3534 .group foo,.text%foo,#comdat
3535 .section .text%foo, "ax", @progbits
3541 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
3542 gcc_cv_as_comdat_group_group,
3546 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
3547 gcc_cv_as_comdat_group_group=no
3551 if test x"$ld_is_gold" = xyes; then
3553 elif test x"$ld_is_mold" = xyes; then
3555 elif test $in_tree_ld = yes ; then
3557 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3558 && test $in_tree_ld_is_elf = yes; then
3561 elif echo "$ld_ver" | grep GNU > /dev/null; then
3563 if test 0"$ld_date" -lt 20050308; then
3564 if test -n "$ld_date"; then
3565 # If there was date string, but was earlier than 2005-03-08, fail
3567 elif test "$ld_vers_major" -lt 2; then
3569 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
3576 *-*-solaris2.1[1-9]*)
3578 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
3579 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
3582 # If using Sun as for COMDAT group as emitted by GCC, one needs at
3583 # least ld version 1.2267.
3584 if test "$ld_vers_major" -gt 1; then
3586 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
3588 elif test "$ld_vers_minor" -ge 2267; then
3593 # Assume linkers other than GNU ld don't support COMDAT group.
3599 # Allow overriding the automatic COMDAT group tests above.
3600 AC_ARG_ENABLE(comdat,
3601 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
3602 [comdat_group="$enable_comdat"])
3603 if test $comdat_group = no; then
3604 gcc_cv_as_comdat_group=no
3605 gcc_cv_as_comdat_group_percent=no
3606 gcc_cv_as_comdat_group_group=no
3608 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
3609 [`if test $gcc_cv_as_comdat_group = yes \
3610 || test $gcc_cv_as_comdat_group_percent = yes \
3611 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
3612 [Define 0/1 if your assembler and linker support COMDAT groups.])
3614 # Restrict this test to Solaris/x86: other targets define this statically.
3616 i?86-*-solaris2* | x86_64-*-solaris2*)
3617 AC_MSG_CHECKING(support for hidden thunks in linkonce sections)
3618 if test $in_tree_ld = yes || echo "$ld_ver" | grep GNU > /dev/null; then
3622 # Full support for hidden thunks in linkonce sections only appeared in
3623 # Solaris 11/OpenSolaris.
3624 *-*-solaris2.1[[1-9]]*)
3632 AC_MSG_RESULT($hidden_linkonce)
3633 AC_DEFINE_UNQUOTED(USE_HIDDEN_LINKONCE,
3634 [`if test $hidden_linkonce = yes; then echo 1; else echo 0; fi`],
3635 [Define 0/1 if your linker supports hidden thunks in linkonce sections.])
3639 gcc_GAS_CHECK_FEATURE([line table is_stmt support],
3643 .loc 1 1 0 is_stmt 1],,
3644 [AC_DEFINE(HAVE_GAS_LOC_STMT, 1,
3645 [Define if your assembler supports the .loc is_stmt sub-directive.])])
3647 gcc_GAS_CHECK_FEATURE([line table discriminator support],
3648 gcc_cv_as_discriminator,,
3651 .loc 1 1 0 discriminator 1],,
3652 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
3653 [Define if your assembler supports the .loc discriminator sub-directive.])])
3655 # Catch the newlib flag of the same name so we can gate GCC features on it.
3656 AC_ARG_ENABLE(newlib-nano-formatted-io,
3657 [AS_HELP_STRING([--enable-newlib-nano-formatted-io], [Use nano version
3659 [case "${enableval}" in
3663 AC_MSG_ERROR([unknown newlib-nano-formatted-io setting $enableval])
3667 # Thread-local storage - the check is heavily parameterized.
3674 .section ".tdata","awT",@progbits
3677 ldq $27,__tls_get_addr($29) !literal!1
3678 lda $16,foo($29) !tlsgd!1
3679 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
3680 ldq $27,__tls_get_addr($29) !literal!2
3681 lda $16,foo($29) !tlsldm!2
3682 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
3683 ldq $1,foo($29) !gotdtprel
3684 ldah $2,foo($29) !dtprelhi
3685 lda $3,foo($2) !dtprello
3686 lda $4,foo($29) !dtprel
3687 ldq $1,foo($29) !gottprel
3688 ldah $2,foo($29) !tprelhi
3689 lda $3,foo($2) !tprello
3690 lda $4,foo($29) !tprel'
3691 tls_as_opt=--fatal-warnings
3695 add_s r0,r0, @foo@tpoff'
3697 cris-*-*|crisv32-*-*)
3699 .section ".tdata","awT",@progbits
3704 tls_as_opt=--fatal-warnings
3708 .section ".tdata","awT",@progbits
3718 .section ".tdata","awT",@progbits
3722 addil LT%foo-$tls_gdidx$,gp
3723 ldo RT%foo-$tls_gdidx$(%r1),%arg0
3726 addil LT%foo-$tls_ldidx$,gp
3728 ldo RT%foo-$tls_ldidx$(%r1),%arg0
3729 addil LR%foo-$tls_dtpoff$,%ret0
3730 ldo RR%foo-$tls_dtpoff$(%r1),%t1
3732 addil LT%foo-$tls_ieoff$,gp
3733 ldw RT%foo-$tls_ieoff$(%r1),%t2
3736 addil LR%foo-$tls_leoff$,%t1
3737 ldo RR%foo-$tls_leoff$(%r1),%t2'
3738 tls_as_opt=--fatal-warnings
3742 .section ".tdata","awT",%progbits
3751 i[34567]86-*-* | x86_64-*-*)
3753 i[34567]86-*-solaris2.* | x86_64-*-solaris2.*)
3760 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3762 .section .tdata,"awt",@progbits'
3765 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
3766 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
3770 .section ".tdata","awT",@progbits'
3772 tls_as_opt="--fatal-warnings"
3776 if test x$on_solaris = xyes; then
3778 yes) tls_as_opt="$tls_as_opt --32" ;;
3781 conftest_s="$conftest_s
3785 leal foo@tlsgd(,%ebx,1), %eax
3786 leal foo@tlsldm(%ebx), %eax
3787 leal foo@dtpoff(%eax), %edx
3788 movl foo@gottpoff(%ebx), %eax
3789 subl foo@gottpoff(%ebx), %eax
3790 addl foo@gotntpoff(%ebx), %eax
3791 movl foo@indntpoff, %eax
3792 movl \$foo@tpoff, %eax
3793 subl \$foo@tpoff, %eax
3794 leal foo@ntpoff(%ecx), %eax"
3797 if test x$on_solaris = xyes; then
3799 yes) tls_as_opt="$tls_as_opt --64" ;;
3800 no) tls_as_opt="$tls_as_opt -xarch=amd64" ;;
3803 conftest_s="$conftest_s
3807 leaq foo@tlsgd(%rip), %rdi
3808 leaq foo@tlsld(%rip), %rdi
3809 leaq foo@dtpoff(%rax), %rdx
3810 movq foo@gottpoff(%rip), %rax
3811 movq \$foo@tpoff, %rax"
3817 .section ".tdata","awT",@progbits
3820 addl r16 = @ltoff(@dtpmod(foo#)), gp
3821 addl r17 = @ltoff(@dtprel(foo#)), gp
3822 addl r18 = @ltoff(@tprel(foo#)), gp
3823 addl r19 = @dtprel(foo#), gp
3824 adds r21 = @dtprel(foo#), r13
3825 movl r23 = @dtprel(foo#)
3826 addl r20 = @tprel(foo#), gp
3827 adds r22 = @tprel(foo#), r13
3828 movl r24 = @tprel(foo#)'
3829 tls_as_opt=--fatal-warnings
3833 .section .tdata,"awT",@progbits
3840 tls_as_opt='--fatal-warnings'
3844 .section .tdata,"awT",@progbits
3848 addik r5,r20,x@TLSGD
3849 addik r5,r20,x@TLSLDM'
3850 tls_as_opt='--fatal-warnings'
3854 .section .tdata,"awT",@progbits
3858 addiu $4, $28, %tlsgd(x)
3859 addiu $4, $28, %tlsldm(x)
3860 lui $4, %dtprel_hi(x)
3861 addiu $4, $4, %dtprel_lo(x)
3862 lw $4, %gottprel(x)($28)
3863 lui $4, %tprel_hi(x)
3864 addiu $4, $4, %tprel_lo(x)'
3865 tls_as_opt='-32 --fatal-warnings'
3869 .section .tdata,"awT",@progbits
3874 move.l x@TLSGD(%a5),%a0
3875 move.l x@TLSLDM(%a5),%a0
3876 move.l x@TLSLDO(%a5),%a0
3877 move.l x@TLSIE(%a5),%a0
3878 move.l x@TLSLE(%a5),%a0'
3879 tls_as_opt='--fatal-warnings'
3883 .section ".tdata","awT",@progbits'
3884 tls_as_opt="--fatal-warnings"
3888 .section ".tdata","awT",%progbits
3892 add x0, x0, #:tlsgd_lo12:x
3895 tls_as_opt='--fatal-warnings'
3899 .section ".tdata","awT",@progbits
3902 l.movhi r3, tpoffha(foo)
3904 l.lwz r4, tpofflo(foo)(r3)'
3905 tls_as_opt=--fatal-warnings
3909 .extern __get_tpointer
3925 .section ".tdata","awT",@progbits
3933 addi 3,2,ld0@got@tlsgd
3939 addi 3,2,x1@got@tlsld
3945 addis 9,3,x2@dtprel@ha
3946 addi 9,9,x2@dtprel@l
3949 ld 9,x3@got@dtprel(2)
3953 tls_as_opt="-a64 --fatal-warnings"
3957 .section ".tdata","awT",@progbits
3965 addi 3,31,ld0@got@tlsgd
3967 addi 3,31,x1@got@tlsld
3970 addis 9,3,x2@dtprel@ha
3971 addi 9,9,x2@dtprel@l
3972 lwz 9,x3@got@tprel(31)
3975 addis 9,2,x2@tprel@ha
3976 addi 9,9,x2@tprel@l'
3977 tls_as_opt="-a32 --fatal-warnings"
3981 .section .tdata,"awT",@progbits
3985 call __tls_get_addr'
3986 tls_as_opt='--fatal-warnings'
3990 .section ".tdata","awT",@progbits
3999 l %r1,foo@GOTNTPOFF(%r12)
4000 l %r1,0(%r1):tls_load:foo
4001 bas %r14,0(%r1,%r13):tls_gdcall:foo
4002 bas %r14,0(%r1,%r13):tls_ldcall:foo'
4003 tls_as_opt="-m31 --fatal-warnings"
4007 .section ".tdata","awT",@progbits
4015 lg %r1,foo@GOTNTPOFF(%r12)
4016 larl %r1,foo@INDNTPOFF
4017 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
4018 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
4019 tls_as_opt="-m64 -Aesame --fatal-warnings"
4021 sh-*-* | sh[123456789lbe]*-*-*)
4023 .section ".tdata","awT",@progbits
4031 tls_as_opt=--fatal-warnings
4035 sparc*-sun-solaris2.*)
4042 if test x$on_solaris = xyes && test x$gas_flag = xno; then
4044 .section ".tdata",#alloc,#write,#tls'
4047 .section ".tdata","awT",@progbits'
4048 tls_as_opt="-32 --fatal-warnings"
4050 conftest_s="$conftest_s
4053 sethi %tgd_hi22(foo), %o0
4054 add %o0, %tgd_lo10(foo), %o1
4055 add %l7, %o1, %o0, %tgd_add(foo)
4056 call __tls_get_addr, %tgd_call(foo)
4057 sethi %tldm_hi22(foo), %l1
4058 add %l1, %tldm_lo10(foo), %l2
4059 add %l7, %l2, %o0, %tldm_add(foo)
4060 call __tls_get_addr, %tldm_call(foo)
4061 sethi %tldo_hix22(foo), %l3
4062 xor %l3, %tldo_lox10(foo), %l4
4063 add %o0, %l4, %l5, %tldo_add(foo)
4064 sethi %tie_hi22(foo), %o3
4065 add %o3, %tie_lo10(foo), %o3
4066 ld [%l7 + %o3], %o2, %tie_ld(foo)
4067 add %g7, %o2, %o4, %tie_add(foo)
4068 sethi %tle_hix22(foo), %l1
4069 xor %l1, %tle_lox10(foo), %o5
4070 ld [%g7 + %o5], %o1"
4074 .section ".tdata","awT",@progbits
4077 movi a8, foo@TLSFUNC
4078 movi a10, foo@TLSARG
4079 callx8.tls a8, foo@TLSCALL'
4084 if test "x$enable_tls" = xno ; then
4085 : # TLS explicitly disabled.
4086 elif test "x$enable_tls" = xyes ; then
4087 set_have_as_tls=yes # TLS explicitly enabled.
4088 elif test -z "$conftest_s"; then
4089 : # If we don't have a check, assume no support.
4091 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
4092 [$tls_as_opt], [$conftest_s],,
4093 [set_have_as_tls=yes])
4095 if test $set_have_as_tls = yes ; then
4096 AC_DEFINE(HAVE_AS_TLS, 1,
4097 [Define if your assembler and linker support thread-local storage.])
4100 # Target-specific assembler checks.
4102 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
4103 gcc_cv_ld_static_dynamic=no
4104 gcc_cv_ld_static_option='-Bstatic'
4105 gcc_cv_ld_dynamic_option='-Bdynamic'
4106 if test $in_tree_ld = yes ; then
4107 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
4108 gcc_cv_ld_static_dynamic=yes
4110 elif test x$gcc_cv_ld != x; then
4111 # Check if linker supports -Bstatic/-Bdynamic option
4112 if $gcc_cv_ld --help 2>&1 | grep -- -Bstatic > /dev/null \
4113 && $gcc_cv_ld --help 2>&1 | grep -- -Bdynamic > /dev/null; then
4114 gcc_cv_ld_static_dynamic=yes
4117 # AIX ld uses -b flags
4118 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
4119 gcc_cv_ld_static_dynamic=yes
4120 gcc_cv_ld_static_option="-bstatic"
4121 gcc_cv_ld_dynamic_option="-bdynamic"
4123 # HP-UX ld uses -a flags to select between shared and archive.
4125 if test x"$gnu_ld" = xno; then
4126 gcc_cv_ld_static_dynamic=yes
4127 gcc_cv_ld_static_option="-aarchive_shared"
4128 gcc_cv_ld_dynamic_option="-adefault"
4131 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
4133 gcc_cv_ld_static_dynamic=yes
4138 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
4139 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
4140 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
4141 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
4142 [Define to the linker option to disable use of shared objects.])
4143 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
4144 [Define to the linker option to enable use of shared objects.])
4146 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
4148 AC_MSG_CHECKING(linker --version-script option)
4149 gcc_cv_ld_version_script=no
4150 ld_version_script_option=''
4151 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
4152 gcc_cv_ld_version_script=yes
4153 ld_version_script_option='--version-script'
4154 elif test x$gcc_cv_ld != x; then
4156 # Solaris 2 ld always supports -M. It also supports a subset of
4157 # --version-script since Solaris 11.4, but requires
4158 # -z gnu-version-script-compat to activate.
4160 gcc_cv_ld_version_script=yes
4161 ld_version_script_option='-M'
4165 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
4166 AC_MSG_RESULT($gcc_cv_ld_version_script)
4167 AC_SUBST(ld_version_script_option)
4169 AC_MSG_CHECKING(linker soname option)
4171 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
4172 gcc_cv_ld_soname=yes
4173 ld_soname_option='-soname'
4174 elif test x$gcc_cv_ld != x; then
4177 gcc_cv_ld_soname=yes
4178 ld_soname_option='-install_name'
4180 # Solaris 2 ld always supports -h. It also supports --soname for GNU
4181 # ld compatiblity since some Solaris 10 update.
4183 gcc_cv_ld_soname=yes
4184 ld_soname_option='-h'
4188 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
4189 AC_MSG_RESULT($gcc_cv_ld_soname)
4190 AC_SUBST(ld_soname_option)
4192 if test x"$demangler_in_ld" = xyes; then
4193 AC_MSG_CHECKING(linker --demangle support)
4194 gcc_cv_ld_demangle=no
4195 if test $in_tree_ld = yes; then
4196 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
4197 gcc_cv_ld_demangle=yes
4199 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
4200 # Check if the GNU linker supports --demangle option
4201 if $gcc_cv_ld --help 2>&1 | grep no-demangle > /dev/null; then
4202 gcc_cv_ld_demangle=yes
4205 if test x"$gcc_cv_ld_demangle" = xyes; then
4206 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
4207 [Define if your linker supports --demangle option.])
4209 AC_MSG_RESULT($gcc_cv_ld_demangle)
4212 AC_MSG_CHECKING(linker plugin support)
4214 if test -f liblto_plugin.la; then
4215 save_ld_ver="$ld_ver"
4216 save_ld_vers_major="$ld_vers_major"
4217 save_ld_vers_minor="$ld_vers_minor"
4218 save_ld_is_gold="$ld_is_gold"
4222 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
4224 # FIXME: ld_is_gold?
4225 ld_vers_major="$gcc_cv_gld_major_version"
4226 ld_vers_minor="$gcc_cv_gld_minor_version"
4228 # Determine plugin linker version.
4229 # FIXME: Partial duplicate from above, generalize.
4231 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
4232 if echo "$ld_ver" | grep GNU > /dev/null; then
4233 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
4235 ld_vers=`echo $ld_ver | sed -n \
4236 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
4238 ld_vers=`echo $ld_ver | sed -n \
4239 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
4241 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
4242 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
4247 # Determine plugin support.
4248 if echo "$ld_ver" | grep GNU > /dev/null; then
4249 # Require GNU ld or gold 2.21+ for plugin support by default.
4250 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
4252 elif test "$ld_is_mold" = yes; then
4254 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
4255 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
4260 ld_ver="$save_ld_ver"
4261 ld_vers_major="$save_ld_vers_major"
4262 ld_vers_minor="$save_ld_vers_minor"
4263 ld_is_gold="$save_ld_is_gold"
4265 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
4266 [Define to the level of your linker's plugin support.])
4267 AC_MSG_RESULT($gcc_cv_lto_plugin)
4269 # Target OS-specific assembler checks.
4271 case "$target_os" in
4273 gcc_GAS_CHECK_FEATURE([-mmacosx-version-min option],
4274 gcc_cv_as_mmacosx_version_min,
4275 [-mmacosx-version-min=10.1], [.text],,
4276 [AC_DEFINE(HAVE_AS_MMACOSX_VERSION_MIN_OPTION, 1,
4277 [Define if your Mac OS X assembler supports the -mmacos-version-min option.])])
4281 # Target CPU-specific assembler checks.
4285 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,
4286 [-mabi=lp64], [.text],,,)
4287 if test x$gcc_cv_as_aarch64_mabi = xyes; then
4288 AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
4289 [Define if your assembler supports the -mabi option.])
4291 if test x$with_abi = xilp32; then
4292 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
4293 Upgrade the Assembler.])
4295 if test x"$with_multilib_list" = xdefault; then
4296 TM_MULTILIB_CONFIG=lp64
4298 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
4299 for aarch64_multilib in ${aarch64_multilibs}; do
4300 case ${aarch64_multilib} in
4302 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
4303 Upgrade the Assembler.])
4311 # Check if we have binutils support for relocations types needed by -fpic
4312 gcc_GAS_CHECK_FEATURE([-fpic relocs], gcc_cv_as_aarch64_picreloc,,
4315 ldr x0, [[x2, #:gotpage_lo15:globalsym]]
4316 ],,[AC_DEFINE(HAVE_AS_SMALL_PIC_RELOCS, 1,
4317 [Define if your assembler supports relocs needed by -fpic.])])
4318 # Enable Branch Target Identification Mechanism and Return Address
4319 # Signing by default.
4320 AC_ARG_ENABLE(standard-branch-protection,
4322 AS_HELP_STRING([--enable-standard-branch-protection],
4323 [enable Branch Target Identification Mechanism and Return Address Signing by default for AArch64])
4324 AS_HELP_STRING([--disable-standard-branch-protection],
4325 [disable Branch Target Identification Mechanism and Return Address Signing by default for AArch64])
4330 tm_defines="${tm_defines} TARGET_ENABLE_BTI=1 TARGET_ENABLE_PAC_RET=1"
4335 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-standard-branch-protection.\
4336 Valid choices are 'yes' and 'no'.])
4341 # Enable default workaround for AArch64 Cortex-A53 erratum 835769.
4342 AC_ARG_ENABLE(fix-cortex-a53-835769,
4344 AS_HELP_STRING([--enable-fix-cortex-a53-835769],
4345 [enable workaround for AArch64 Cortex-A53 erratum 835769 by default])
4346 AS_HELP_STRING([--disable-fix-cortex-a53-835769],
4347 [disable workaround for AArch64 Cortex-A53 erratum 835769 by default])
4352 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1"
4357 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\
4358 Valid choices are 'yes' and 'no'.])
4364 # Enable default workaround for AArch64 Cortex-A53 erratum 843419.
4365 AC_ARG_ENABLE(fix-cortex-a53-843419,
4367 AS_HELP_STRING([--enable-fix-cortex-a53-843419],
4368 [enable workaround for AArch64 Cortex-A53 erratum 843419 by default])
4369 AS_HELP_STRING([--disable-fix-cortex-a53-843419],
4370 [disable workaround for AArch64 Cortex-A53 erratum 843419 by default])
4375 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1"
4380 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\
4381 Valid choices are 'yes' and 'no'.])
4389 # All TARGET_ABI_OSF targets.
4390 alpha*-*-linux* | alpha*-*-*bsd*)
4391 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4392 gcc_cv_as_alpha_explicit_relocs,,
4395 extbl $3, $2, $3 !lituse_bytoff!1
4396 ldq $2, a($29) !literal!1
4397 ldq $4, b($29) !literal!2
4398 ldq_u $3, 0($2) !lituse_base!1
4399 ldq $27, f($29) !literal!5
4400 jsr $26, ($27), f !lituse_jsr!5
4401 ldah $29, 0($26) !gpdisp!3
4402 lda $0, c($29) !gprel
4403 ldah $1, d($29) !gprelhigh
4404 lda $1, d($1) !gprellow
4405 lda $29, 0($29) !gpdisp!3],,
4406 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
4407 [Define if your assembler supports explicit relocations.])])
4408 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
4409 gcc_cv_as_alpha_jsrdirect_relocs,,
4412 ldq $27, a($29) !literal!1
4413 jsr $26, ($27), a !lituse_jsrdirect!1],,
4414 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
4415 [Define if your assembler supports the lituse_jsrdirect relocation.])])
4419 gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax,
4420 [--mlink-relax], [.text],,
4421 [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1,
4422 [Define if your avr assembler supports --mlink-relax option.])])
4424 gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,
4426 [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1,
4427 [Define if your avr assembler supports -mrmw option.])])
4429 gcc_GAS_CHECK_FEATURE([__gcc_isr pseudo instruction],
4430 gcc_cv_as_avr_mgccisr,
4436 [AC_DEFINE(HAVE_AS_AVR_MGCCISR_OPTION, 1,
4437 [Define if your avr assembler supports -mgcc-isr option.])])
4439 # Check how default linker description file implements .rodata for
4440 # avrxmega3 (PR21472). avr-gcc assumes .rodata is *not* loaded to
4441 # RAM so avr-gcc skips __do_copy_data for .rodata objects.
4442 AC_MSG_CHECKING(binutils for avrxmega3 .rodata support)
4443 cat > conftest.s <<EOF
4444 .section .rodata,"a",@progbits
4446 ;; avr-nm should print "... R xxvaryy", not "... D xxvaryy".
4451 AC_TRY_COMMAND([$gcc_cv_as -mmcu=avrxmega3 conftest.s -o conftest.o])
4452 AC_TRY_COMMAND([$gcc_cv_ld -mavrxmega3 conftest.o -o conftest.elf])
4453 AC_TRY_COMMAND([$gcc_cv_nm conftest.elf > conftest.nm])
4454 if test -s conftest.nm
4456 if grep ' R xxvaryy' conftest.nm > /dev/null; then
4458 AC_DEFINE(HAVE_LD_AVR_AVRXMEGA3_RODATA_IN_FLASH, 1,
4459 [Define if your default avr linker script for avrxmega3 leaves .rodata in flash.])
4461 AC_MSG_RESULT(no: avrxmega3 .rodata located in RAM)
4462 echo "$as_me: nm output was" >&AS_MESSAGE_LOG_FD
4463 cat conftest.nm >&AS_MESSAGE_LOG_FD
4464 avr_ld_ver="`$gcc_cv_ld -v | sed -e 's:^.* ::'`"
4465 AC_MSG_WARN([[support for avrxmega3 .rodata in flash needs Binutils 2.29 or higher (have $avr_ld_ver)]])
4468 AC_MSG_RESULT(test failed)
4469 echo "$as_me: failed program was" >&AS_MESSAGE_LOG_FD
4470 cat conftest.s >&AS_MESSAGE_LOG_FD
4471 AC_MSG_WARN([[see `config.log' for details]])
4473 rm -f conftest.s conftest.o conftest.elf conftest.nm
4477 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
4478 gcc_cv_as_cris_no_mul_bug,
4479 [-no-mul-bug-abort], [.text],,
4480 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
4481 [Define if your assembler supports the -no-mul-bug-abort option.])])
4485 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,
4487 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
4488 [Define if your assembler supports -relax option.])])
4490 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
4491 gcc_cv_as_sparc_gotdata_op,
4498 sethi %gdop_hix22(foo), %g1
4499 xor %g1, %gdop_lox10(foo), %g1
4500 ld [[%l7 + %g1]], %g2, %gdop(foo)],
4501 [if test x$gcc_cv_ld != x \
4502 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4503 if test x$gcc_cv_objdump != x; then
4504 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
4505 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
4506 gcc_cv_as_sparc_gotdata_op=no
4508 gcc_cv_as_sparc_gotdata_op=yes
4513 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
4514 [Define if your assembler and linker support GOTDATA_OP relocs.])])
4516 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
4517 gcc_cv_as_sparc_ua_pcrel,
4525 .uaword %r_disp32(foo)],
4526 [if test x$gcc_cv_ld != x \
4527 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4528 gcc_cv_as_sparc_ua_pcrel=yes
4531 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
4532 [Define if your assembler and linker support unaligned PC relative relocs.])
4534 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
4535 gcc_cv_as_sparc_ua_pcrel_hidden,
4540 .uaword %r_disp32(foo)
4541 .byte 0x32, 0x33, 0x34
4546 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4547 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
4548 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
4549 | grep ' 31000000 07323334' > /dev/null 2>&1; then
4550 if $gcc_cv_objdump -R conftest 2> /dev/null \
4551 | grep 'DISP32' > /dev/null 2>&1; then
4554 gcc_cv_as_sparc_ua_pcrel_hidden=yes
4558 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
4559 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
4560 ]) # unaligned pcrel relocs
4562 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
4563 gcc_cv_as_sparc_offsetable_lo10,
4566 or %g1, %lo(ab) + 12, %g1
4567 or %g1, %lo(ab + 12), %g1],
4568 [if test x$gcc_cv_objdump != x \
4569 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
4570 | grep ' 82106000 82106000' > /dev/null 2>&1; then
4571 gcc_cv_as_sparc_offsetable_lo10=yes
4573 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
4574 [Define if your assembler supports offsetable %lo().])])
4576 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
4577 gcc_cv_as_sparc_fmaf,
4580 .register %g2, #scratch
4581 .register %g3, #scratch
4583 fmaddd %f0, %f2, %f4, %f6
4584 addxccc %g1, %g2, %g3
4585 fsrl32 %f2, %f4, %f8
4586 fnaddd %f10, %f12, %f14],,
4587 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
4588 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
4590 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
4591 gcc_cv_as_sparc_sparc4,
4594 .register %g2, #scratch
4595 .register %g3, #scratch
4598 1: cwbneg %g2, %g3, 1f
4601 aes_kexpand0 %f4, %f6, %f8
4602 des_round %f38, %f40, %f42, %f44
4603 camellia_f %f54, %f56, %f58, %f60
4604 kasumi_fi_xor %f46, %f48, %f50, %f52],,
4605 [AC_DEFINE(HAVE_AS_SPARC4, 1,
4606 [Define if your assembler supports SPARC4 instructions.])])
4608 gcc_GAS_CHECK_FEATURE([SPARC5 and VIS 4.0 instructions],
4609 gcc_cv_as_sparc_sparc5,
4612 .register %g2, #scratch
4613 .register %g3, #scratch
4616 fpadd8 %f0, %f2, %f4],,
4617 [AC_DEFINE(HAVE_AS_SPARC5_VIS4, 1,
4618 [Define if your assembler supports SPARC5 and VIS 4.0 instructions.])])
4620 gcc_GAS_CHECK_FEATURE([SPARC6 instructions],
4621 gcc_cv_as_sparc_sparc6,
4624 .register %g2, #scratch
4625 .register %g3, #scratch
4628 fpsll64x %f0, %f2, %f4],,
4629 [AC_DEFINE(HAVE_AS_SPARC6, 1,
4630 [Define if your assembler supports SPARC6 instructions.])])
4632 gcc_GAS_CHECK_FEATURE([LEON instructions],
4633 gcc_cv_as_sparc_leon,
4636 .register %g2, #scratch
4637 .register %g3, #scratch
4641 casa [[%g2]] 0xb, %g3, %g1],,
4642 [AC_DEFINE(HAVE_AS_LEON, 1,
4643 [Define if your assembler supports LEON instructions.])])
4647 i[34567]86-*-* | x86_64-*-*)
4651 # Full C++ conformance when using a shared libstdc++-v3 requires some
4652 # support from the Cygwin DLL, which in more recent versions exports
4653 # wrappers to aid in interposing and redirecting operators new, delete,
4654 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
4655 # are configuring for a version of Cygwin that exports the wrappers.
4656 if test x$host = x$target && test x$host_cpu = xi686; then
4657 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
4659 # Can't check presence of libc functions during cross-compile, so
4660 # we just have to assume we're building for an up-to-date target.
4661 gcc_ac_cygwin_dll_wrappers=yes
4663 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
4664 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
4665 [Define if you want to generate code by default that assumes that the
4666 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
4669 cygwin* | pe | mingw32*)
4670 # Recent binutils allows the three-operand form of ".comm" on PE. This
4671 # definition is used unconditionally to initialise the default state of
4672 # the target option variable that governs usage of the feature.
4673 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,,
4675 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
4676 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
4677 [Define if your assembler supports specifying the alignment
4678 of objects allocated using the GAS .comm command.])
4679 # Used for DWARF 2 in PE
4680 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
4681 gcc_cv_as_ix86_pe_secrel32,,
4686 [if test x$gcc_cv_ld != x \
4687 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
4688 gcc_cv_as_ix86_pe_secrel32=yes
4691 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
4692 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
4693 # Test if the assembler supports the extended form of the .section
4694 # directive that specifies section alignment. LTO support uses this,
4695 # but normally only after installation, so we warn but don't fail the
4696 # configure if LTO is enabled but the assembler does not support it.
4697 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
4698 -fatal-warnings,[.section lto_test,"dr0"])
4699 if test x$gcc_cv_as_section_has_align != xyes; then
4700 case ",$enable_languages," in
4702 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
4709 darwin2* | darwin19*)
4710 gcc_GAS_CHECK_FEATURE([llvm assembler x86-pad-for-align option],
4711 gcc_cv_as_mllvm_x86_pad_for_align,
4712 [-mllvm -x86-pad-for-align=false], [.text],,
4713 [AC_DEFINE(HAVE_AS_MLLVM_X86_PAD_FOR_ALIGN, 1,
4714 [Define if your Mac OS X assembler supports -mllvm -x86-pad-for-align=false.])])
4718 gcc_GAS_CHECK_FEATURE([-xbrace_comment], gcc_cv_as_ix86_xbrace_comment,
4719 [-xbrace_comment=no], [.text],,
4720 [AC_DEFINE(HAVE_AS_XBRACE_COMMENT_OPTION, 1,
4721 [Define if your assembler supports -xbrace_comment option.])])
4723 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
4724 gcc_cv_as_ix86_filds,,
4725 [filds (%ebp); fists (%ebp)],,
4726 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
4727 [Define if your assembler uses filds and fists mnemonics.])])
4729 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
4730 gcc_cv_as_ix86_fildq,,
4731 [fildq (%ebp); fistpq (%ebp)],,
4732 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
4733 [Define if your assembler uses fildq and fistq mnemonics.])])
4735 gcc_GAS_CHECK_FEATURE([cmov syntax],
4736 gcc_cv_as_ix86_cmov_sun_syntax,,
4737 [cmovl.l %edx, %eax],,
4738 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
4739 [Define if your assembler supports the Sun syntax for cmov.])])
4741 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
4742 gcc_cv_as_ix86_ffreep,,
4744 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
4745 [Define if your assembler supports the ffreep mnemonic.])])
4747 gcc_GAS_CHECK_FEATURE([.quad directive],
4748 gcc_cv_as_ix86_quad,,
4750 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
4751 [Define if your assembler supports the .quad directive.])])
4753 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
4754 gcc_cv_as_ix86_sahf,,
4757 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
4758 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
4760 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
4761 gcc_cv_as_ix86_interunit_movq,,
4765 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
4766 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
4767 [Define if your assembler supports interunit movq mnemonic.])
4769 gcc_GAS_CHECK_FEATURE([hle prefixes],
4770 gcc_cv_as_ix86_hle,,
4771 [lock xacquire cmpxchg %esi, (%ecx)],,
4772 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
4773 [Define if your assembler supports HLE prefixes.])])
4775 gcc_GAS_CHECK_FEATURE([swap suffix],
4776 gcc_cv_as_ix86_swap,,
4777 [movl.s %esp, %ebp],,
4778 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
4779 [Define if your assembler supports the swap suffix.])])
4781 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
4782 gcc_cv_as_ix86_diff_sect_delta,,
4790 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
4791 [Define if your assembler supports the subtraction of symbols in different sections.])])
4793 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
4794 gcc_cv_as_ix86_rep_lock_prefix,,
4800 lock addl %edi, (%eax,%esi)
4801 lock orl $0, (%esp)],,
4802 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
4803 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
4805 gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
4806 gcc_cv_as_ix86_ud2,,
4808 [AC_DEFINE(HAVE_AS_IX86_UD2, 1,
4809 [Define if your assembler supports the 'ud2' mnemonic.])])
4811 # Enforce 32-bit output with gas and gld.
4812 if test x$gas = xyes; then
4813 as_ix86_gas_32_opt="--32"
4815 if echo "$ld_ver" | grep GNU > /dev/null; then
4816 if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then
4817 ld_ix86_gld_32_opt="-melf_i386_sol2"
4819 ld_ix86_gld_32_opt="-melf_i386"
4823 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
4824 gcc_cv_as_ix86_tlsgdplt,
4825 [$as_ix86_gas_32_opt],
4826 [call tls_gd@tlsgdplt],
4827 [if test x$gcc_cv_ld != x \
4828 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4829 gcc_cv_as_ix86_tlsgdplt=yes
4832 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
4833 [Define if your assembler and linker support @tlsgdplt.])])
4836 .section .tdata,"aw'$tls_section_flag'",@progbits
4838 .section .text,"ax",@progbits
4839 call tls_ld@tlsldmplt'
4841 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
4842 gcc_cv_as_ix86_tlsldmplt,
4843 [$as_ix86_gas_32_opt],
4845 [if test x$gcc_cv_ld != x \
4846 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4847 gcc_cv_as_ix86_tlsldmplt=yes
4850 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT,
4851 [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`],
4852 [Define to 1 if your assembler and linker support @tlsldmplt.])
4855 .section .text,"ax",@progbits
4857 .type _start, @function
4859 leal value@tlsldm(%ebx), %eax
4860 call ___tls_get_addr@plt
4862 .section .tdata,"aw'$tls_section_flag'",@progbits
4863 .type value, @object
4865 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc],
4866 gcc_cv_as_ix86_tlsldm,
4867 [$as_ix86_gas_32_opt],
4869 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4870 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then
4871 if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \
4872 || dis conftest 2>/dev/null | grep nop > /dev/null; then
4873 gcc_cv_as_ix86_tlsldm=yes
4877 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM,
4878 [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`],
4879 [Define to 1 if your assembler and linker support @tlsldm.])
4890 gcc_GAS_CHECK_FEATURE([R_386_GOT32X reloc],
4891 gcc_cv_as_ix86_got32x,
4892 [$as_ix86_gas_32_opt],
4894 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4895 && test x$gcc_cv_readelf != x \
4896 && $gcc_cv_readelf --relocs --wide conftest.o 2>&1 \
4897 | grep R_386_GOT32X > /dev/null 2>&1 \
4898 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4899 if $gcc_cv_objdump -dw conftest 2>&1 \
4900 | grep 0xffffff > /dev/null 2>&1; then
4901 gcc_cv_as_ix86_got32x=no
4903 gcc_cv_as_ix86_got32x=yes
4907 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_GOT32X,
4908 [`if test x"$gcc_cv_as_ix86_got32x" = xyes; then echo 1; else echo 0; fi`],
4909 [Define 0/1 if your assembler and linker support @GOT.])
4911 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
4912 gcc_cv_as_ix86_gotoff_in_data,
4913 [$as_ix86_gas_32_opt],
4919 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
4920 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
4921 [Define true if the assembler supports '.long foo@GOTOFF'.])
4924 .section .text,"ax",@progbits
4926 .type _start, @function
4928 leal ld@tlsldm(%ecx), %eax
4929 call *___tls_get_addr@GOT(%ecx)
4930 leal gd@tlsgd(%ecx), %eax
4931 call *___tls_get_addr@GOT(%ecx)
4933 .section .tdata,"aw'$tls_section_flag'",@progbits
4941 gcc_GAS_CHECK_FEATURE([calling ___tls_get_addr via GOT],
4942 gcc_cv_as_ix86_tls_get_addr_via_got,
4943 [$as_ix86_gas_32_opt],
4945 [if test x$gcc_cv_ld != x \
4946 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4947 gcc_cv_as_ix86_tls_get_addr_via_got=yes
4950 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLS_GET_ADDR_GOT,
4951 [`if test x"$gcc_cv_as_ix86_tls_get_addr_via_got" = xyes; then echo 1; else echo 0; fi`],
4952 [Define 0/1 if your assembler and linker support calling ___tls_get_addr via GOT.])
4956 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
4957 gcc_cv_as_ia64_ltoffx_ldxmov_relocs,,
4959 addl r15 = @ltoffx(x#), gp
4961 ld8.mov r16 = [[r15]], x#
4963 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
4964 [Define if your assembler supports ltoffx and ldxmov relocations.])])
4972 gcc_GAS_CHECK_FEATURE([.machine directive support],
4973 gcc_cv_as_machine_directive,,
4974 [ .machine ppc7400])
4975 if test x$gcc_cv_as_machine_directive != xyes; then
4976 echo "*** This target requires an assembler supporting \".machine\"" >&2
4977 echo you can get it from: https://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
4978 test x$build = x$target && exit 1
4984 *-*-aix*) conftest_s=' .machine "pwr5"
4987 *-*-darwin*) conftest_s=' .text
4989 *) conftest_s=' .machine power4
4994 gcc_GAS_CHECK_FEATURE([mfcr field support],
4995 gcc_cv_as_powerpc_mfcrf,,
4997 [AC_DEFINE(HAVE_AS_MFCRF, 1,
4998 [Define if your assembler supports mfcr field.])])
5001 *-*-aix*) conftest_s=' .csect .text[[PR]]
5003 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
5007 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
5008 *) conftest_s=' .text
5010 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
5013 gcc_GAS_CHECK_FEATURE([rel16 relocs],
5014 gcc_cv_as_powerpc_rel16, -a32,
5016 [AC_DEFINE(HAVE_AS_REL16, 1,
5017 [Define if your assembler supports R_PPC_REL16 relocs.])])
5020 *-*-aix*) conftest_s=' .machine "pwr7"
5023 *) conftest_s=' .machine power7
5028 gcc_GAS_CHECK_FEATURE([vector-scalar support],
5029 gcc_cv_as_powerpc_vsx, -a32,
5031 [AC_DEFINE(HAVE_AS_VSX, 1,
5032 [Define if your assembler supports VSX instructions.])])
5034 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5035 gcc_cv_as_powerpc_gnu_attribute,,
5036 [.gnu_attribute 4,1],,
5037 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5038 [Define if your assembler supports .gnu_attribute.])])
5040 gcc_GAS_CHECK_FEATURE([prologue entry point marker support],
5041 gcc_cv_as_powerpc_entry_markers,-a64 --fatal-warnings,
5042 [ .reloc .,R_PPC64_ENTRY; nop],,
5043 [AC_DEFINE(HAVE_AS_ENTRY_MARKERS, 1,
5044 [Define if your assembler supports the R_PPC64_ENTRY relocation.])])
5046 gcc_GAS_CHECK_FEATURE([plt sequence marker support],
5047 gcc_cv_as_powerpc_pltseq_markers,-a32 --fatal-warnings,
5048 [ .reloc .,R_PPC_PLTSEQ; nop],,
5049 [AC_DEFINE(HAVE_AS_PLTSEQ, 1,
5050 [Define if your assembler supports R_PPC*_PLTSEQ relocations.])])
5054 gcc_GAS_CHECK_FEATURE([AIX .ref support],
5056 [ .csect stuff[[rw]]
5062 [AC_DEFINE(HAVE_AS_REF, 1,
5063 [Define if your assembler supports .ref])])
5065 gcc_GAS_CHECK_FEATURE([AIX DWARF location lists section support],
5066 gcc_cv_as_aix_dwloc,,
5071 [AC_DEFINE(HAVE_XCOFF_DWARF_EXTRAS, 1,
5072 [Define if your assembler supports AIX debug frame section label reference.])])
5078 gcc_GAS_CHECK_FEATURE([explicit relocation support],
5079 gcc_cv_as_mips_explicit_relocs,,
5080 [ lw $4,%gp_rel(foo)($4)],,
5081 [if test x$target_cpu_default = x
5082 then target_cpu_default=MASK_EXPLICIT_RELOCS
5083 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
5086 gcc_GAS_CHECK_FEATURE([-mno-shared support],
5087 gcc_cv_as_mips_no_shared,[-mno-shared], [nop],,
5088 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
5089 [Define if the assembler understands -mno-shared.])])
5091 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5092 gcc_cv_as_mips_gnu_attribute,,
5093 [.gnu_attribute 4,1],,
5094 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5095 [Define if your assembler supports .gnu_attribute.])])
5097 gcc_GAS_CHECK_FEATURE([.module support],
5098 gcc_cv_as_mips_dot_module,[-32],
5101 [AC_DEFINE(HAVE_AS_DOT_MODULE, 1,
5102 [Define if your assembler supports .module.])])
5103 if test x$gcc_cv_as_mips_dot_module = xno \
5104 && test x$with_fp_32 != x; then
5106 [Requesting --with-fp-32= requires assembler support for .module.])
5109 gcc_GAS_CHECK_FEATURE([.micromips support],
5110 gcc_cv_as_micromips_support,[--fatal-warnings],
5112 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
5113 [Define if your assembler supports the .set micromips directive])])
5115 gcc_GAS_CHECK_FEATURE([.dtprelword support],
5116 gcc_cv_as_mips_dtprelword,,
5117 [.section .tdata,"awT",@progbits
5121 .dtprelword x+0x8000],,
5122 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
5123 [Define if your assembler supports .dtprelword.])])
5125 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
5126 gcc_cv_as_mips_dspr1_mult,,
5136 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
5137 [Define if your assembler supports DSPR1 mult.])])
5139 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
5140 gcc_cv_as_ld_jalr_reloc=no
5141 if test $gcc_cv_as_mips_explicit_relocs = yes; then
5142 if test $in_tree_ld = yes ; then
5143 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
5144 && test $in_tree_ld_is_elf = yes; then
5145 gcc_cv_as_ld_jalr_reloc=yes
5147 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
5148 echo ' .ent x' > conftest.s
5149 echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s
5150 echo ' lw $25,%call16(y)($28)' >> conftest.s
5151 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
5152 echo '1: jalr $25' >> conftest.s
5153 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
5154 echo '1: jalr $25' >> conftest.s
5155 echo ' .end x' >> conftest.s
5156 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
5157 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
5158 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
5159 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
5160 gcc_cv_as_ld_jalr_reloc=yes
5166 if test $gcc_cv_as_ld_jalr_reloc = yes; then
5167 if test x$target_cpu_default = x; then
5168 target_cpu_default=MASK_RELAX_PIC_CALLS
5170 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
5173 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
5175 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
5176 [gcc_cv_ld_mips_personality_relaxation],
5177 [gcc_cv_ld_mips_personality_relaxation=no
5178 if test $in_tree_ld = yes ; then
5179 if test "$gcc_cv_gld_major_version" -eq 2 \
5180 -a "$gcc_cv_gld_minor_version" -ge 21 \
5181 -o "$gcc_cv_gld_major_version" -gt 2; then
5182 gcc_cv_ld_mips_personality_relaxation=yes
5184 elif test x$gcc_cv_as != x \
5185 -a x$gcc_cv_ld != x \
5186 -a x$gcc_cv_readelf != x ; then
5187 cat > conftest.s <<EOF
5189 .cfi_personality 0x80,indirect_ptr
5196 .section .data,"aw",@progbits
5200 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
5201 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
5202 if $gcc_cv_readelf -d conftest 2>&1 \
5203 | grep TEXTREL > /dev/null 2>&1; then
5205 elif $gcc_cv_readelf --relocs conftest 2>&1 \
5206 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
5209 gcc_cv_ld_mips_personality_relaxation=yes
5213 rm -f conftest.s conftest.o conftest])
5214 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
5215 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
5216 [Define if your linker can relax absolute .eh_frame personality
5217 pointers into PC-relative form.])
5220 gcc_GAS_CHECK_FEATURE([-mnan= support],
5223 [AC_DEFINE(HAVE_AS_NAN, 1,
5224 [Define if the assembler understands -mnan=.])])
5225 if test x$gcc_cv_as_mips_nan = xno \
5226 && test x$with_nan != x; then
5228 [Requesting --with-nan= requires assembler support for -mnan=])
5232 # Earlier GAS versions generically support .gnu_attribute, but the
5233 # msp430 assembler will not do anything with it.
5234 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5235 gcc_cv_as_msp430_gnu_attribute,,
5236 [.gnu_attribute 4,1],,
5237 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5238 [Define if your assembler supports .gnu_attribute.])])
5239 gcc_GAS_CHECK_FEATURE([.mspabi_attribute support],
5240 gcc_cv_as_msp430_mspabi_attribute,,
5241 [.mspabi_attribute 4,2],,
5242 [AC_DEFINE(HAVE_AS_MSPABI_ATTRIBUTE, 1,
5243 [Define if your assembler supports .mspabi_attribute.])])
5244 if test x$enable_newlib_nano_formatted_io = xyes; then
5245 AC_DEFINE(HAVE_NEWLIB_NANO_FORMATTED_IO, 1, [Define if GCC has been
5246 configured with --enable-newlib-nano-formatted-io.])
5250 # Versions 2.33 and earlier lacked support for the %gotoff relocation
5251 # syntax that is documented in the ABI specification.
5252 gcc_GAS_CHECK_FEATURE([support for %gotoff relocations in constant data],
5253 gcc_cv_as_nios2_gotoff_relocation,,
5256 .long %gotoff(foo)],,
5257 [AC_DEFINE(HAVE_AS_NIOS2_GOTOFF_RELOCATION, 1,
5258 [Define if your assembler supports %gotoff relocation syntax.])])
5261 gcc_GAS_CHECK_FEATURE([.attribute support],
5262 gcc_cv_as_riscv_attribute,,
5263 [.attribute stack_align,4],,
5264 [AC_DEFINE(HAVE_AS_RISCV_ATTRIBUTE, 1,
5265 [Define if your assembler supports .attribute.])])
5266 gcc_GAS_CHECK_FEATURE([-misa-spec= support],
5267 gcc_cv_as_riscv_isa_spec,
5269 [AC_DEFINE(HAVE_AS_MISA_SPEC, 1,
5270 [Define if the assembler understands -misa-spec=.])])
5271 gcc_GAS_CHECK_FEATURE([-march=rv32i_zifencei support],
5272 gcc_cv_as_riscv_march_zifencei,
5273 [-march=rv32i_zifencei2p0],,,
5274 [AC_DEFINE(HAVE_AS_MARCH_ZIFENCEI, 1,
5275 [Define if the assembler understands -march=rv*_zifencei.])])
5278 gcc_GAS_CHECK_FEATURE([.dtprelword support],
5279 gcc_cv_as_loongarch_dtprelword, [2,18,0],,
5280 [.section .tdata,"awT",@progbits
5284 .dtprelword x+0x8000],,
5285 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
5286 [Define if your assembler supports .dtprelword.])])
5287 gcc_GAS_CHECK_FEATURE([explicit relocation support],
5288 gcc_cv_as_loongarch_explicit_relocs,,
5289 [a:pcalau12i $t0,%pc_hi20(a)],,
5290 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
5291 [Define if your assembler supports explicit relocation.])])
5292 gcc_GAS_CHECK_FEATURE([eh_frame pcrel encoding support],
5293 gcc_cv_as_loongarch_eh_frame_pcrel_encoding_support,,
5295 .cfi_personality 0x9b,a
5298 [AC_DEFINE(HAVE_AS_EH_FRAME_PCREL_ENCODING_SUPPORT, 1,
5299 [Define if your assembler supports eh_frame pcrel encoding.])])
5302 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5303 gcc_cv_as_s390_gnu_attribute,,
5304 [.gnu_attribute 8,1],,
5305 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5306 [Define if your assembler supports .gnu_attribute.])])
5307 gcc_GAS_CHECK_FEATURE([.machine and .machinemode support],
5308 gcc_cv_as_s390_machine_machinemode,,
5313 [AC_DEFINE(HAVE_AS_MACHINE_MACHINEMODE, 1,
5314 [Define if your assembler supports .machine and .machinemode.])])
5315 gcc_GAS_CHECK_FEATURE([architecture modifiers support],
5316 gcc_cv_as_s390_architecture_modifiers,,
5317 [ .machine z13+vx ],,
5318 [AC_DEFINE(HAVE_AS_ARCHITECTURE_MODIFIERS, 1,
5319 [Define if your assembler supports architecture modifiers.])])
5320 gcc_GAS_CHECK_FEATURE([vector load/store alignment hints],
5321 gcc_cv_as_s390_vector_loadstore_alignment_hints,,
5322 [ vl %v24,0(%r15),3 ],,
5323 [AC_DEFINE(HAVE_AS_VECTOR_LOADSTORE_ALIGNMENT_HINTS, 1,
5324 [Define if your assembler supports vl/vst/vlm/vstm with an optional alignment hint argument.])])
5325 gcc_GAS_CHECK_FEATURE([vector load/store alignment hints on z13],
5326 gcc_cv_as_s390_vector_loadstore_alignment_hints_on_z13, [-mzarch -march=z13],
5327 [ vl %v24,0(%r15),3 ],,
5328 [AC_DEFINE(HAVE_AS_VECTOR_LOADSTORE_ALIGNMENT_HINTS_ON_Z13, 1,
5329 [Define if your assembler supports vl/vst/vlm/vstm with an optional alignment hint argument on z13.])])
5334 # Mips, LoongArch and HP-UX need the GNU assembler.
5335 # Linux on IA64 might be able to use the Intel assembler.
5338 mips*-*-* | loongarch*-*-* | *-*-hpux* )
5339 if test x$gas_flag = xyes \
5340 || test x"$host" != x"$build" \
5341 || test ! -x "$gcc_cv_as" \
5342 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
5345 echo "*** This configuration requires the GNU assembler" >&2
5351 # AMD GCN needs the LLVM assembler and linker.
5352 # Test that LLVM is at least 13.0.1.
5355 AC_MSG_CHECKING(llvm assembler version)
5356 gcc_cv_as_version="unknown"
5357 if test x$gcc_cv_as != x; then
5358 gcc_cv_as_version=`$gcc_cv_as --version 2>&1 | sed -ne '/version/s/.* \([[0-9]]\)/\1/p' || echo error`
5359 case "$gcc_cv_as_version" in
5360 13.0.[[1-9]]*) ;; # 13.0.1+
5361 13.[[1-9]]*) ;; # 13.1+
5362 1[[4-9]]*) ;; # 14..19
5363 [[2-9]][[0-9]]*) ;; # 20..99
5364 [[1-9]][[0-9]][[0-9]]*) ;; # 100+
5365 error) AC_MSG_ERROR([cannot determine LLVM version]) ;;
5366 *) AC_MSG_ERROR([LLVM 13.0.1 or later is required (found LLVM $gcc_cv_as_version)]) ;;
5369 AC_MSG_RESULT([$gcc_cv_as_version, ok])
5375 gcc_GAS_CHECK_FEATURE([assembler for arm accepts context-specific architecture extensions],
5376 gcc_cv_as_arm_option_extensions,
5377 [-march=armv8.1-m.main+mve],
5382 [AC_DEFINE(HAVE_GAS_ARM_EXTENDED_ARCH, 1,
5383 [Define if your Arm assembler permits context-specific feature extensions.])])
5386 # ??? Not all targets support dwarf2 debug_line, even within a version
5387 # of gas. Moreover, we need to emit a valid instruction to trigger any
5388 # info to the output file. So, as supported targets are added to gas 2.11,
5389 # add some instruction here to (also) show we expect this might work.
5390 # ??? Once 2.11 is released, probably need to add first known working
5391 # version to the per-target configury.
5393 aarch64 | alpha | arc | arm | avr | bfin | cris | csky | i386 | loongarch | m32c \
5394 | m68k | microblaze | mips | nds32 | nios2 | pa | riscv | rs6000 | score | sparc \
5395 | visium | xstormy16 | xtensa)
5405 if test x"$insn" != x; then
5407 .file 1 \"conftest.s\"
5410 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
5411 gcc_cv_as_dwarf2_debug_line,,
5413 [if test x$gcc_cv_objdump != x \
5414 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
5415 | grep debug_line > /dev/null 2>&1; then
5416 gcc_cv_as_dwarf2_debug_line=yes
5417 elif test x$gcc_cv_otool != x \
5418 && $gcc_cv_otool -l conftest.o 2> /dev/null \
5419 | grep debug_line > /dev/null 2>&1; then
5420 gcc_cv_as_dwarf2_debug_line=yes
5423 # The .debug_line file table must be in the exact order that
5424 # we specified the files, since these indices are also used
5425 # by DW_AT_decl_file. Approximate this test by testing if
5426 # the assembler bitches if the same index is assigned twice.
5427 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
5428 gcc_cv_as_dwarf2_file_buggy,,
5432 if test $gcc_cv_as_dwarf2_debug_line = yes \
5433 && test $gcc_cv_as_dwarf2_file_buggy = no; then
5434 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
5435 [Define if your assembler supports dwarf2 .file/.loc directives,
5436 and preserves file table indices exactly as given.])
5438 if test $gcc_cv_as_leb128 = yes; then
5440 .file 1 \"conftest.s\"
5441 .loc 1 3 0 view .LVU1
5447 gcc_GAS_CHECK_FEATURE([dwarf2 debug_view support],
5448 gcc_cv_as_dwarf2_debug_view,,
5450 [AC_DEFINE(HAVE_AS_DWARF2_DEBUG_VIEW, 1,
5451 [Define if your assembler supports views in dwarf2 .loc directives.])])
5455 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
5456 gcc_cv_as_gdwarf2_flag,
5457 [--gdwarf2], [$insn],,
5458 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
5459 [Define if your assembler supports the --gdwarf2 option.])])
5461 gcc_GAS_CHECK_FEATURE([--gdwarf-5 option],
5462 gcc_cv_as_gdwarf_5_flag,
5463 [--gdwarf-5], [$insn],
5464 [if test x$gcc_cv_objdump != x \
5465 && $gcc_cv_objdump -Wi conftest.o 2>&1 \
5466 | grep DW_TAG_compile_unit > /dev/null 2>&1; then
5467 gcc_cv_as_gdwarf_5_flag=yes;
5468 fi],[AC_DEFINE(HAVE_AS_GDWARF_5_DEBUG_FLAG, 1,
5469 [Define if your assembler supports the --gdwarf-5 option.])])
5472 win32 | pe | cygwin* | mingw32*)
5473 section_flags=\"dr\"
5474 function_type=".def foo; .scl 2; .type 32; .endef"
5477 section_flags=\"\",%progbits
5478 function_type=".type foo, %function"
5479 function_size=".size foo, .-foo";;
5481 dwarf4_debug_info_size=0x46
5482 dwarf4_high_pc_form=7
5483 dwarf4_debug_aranges_size=0x2c
5485 for dwarf4_addr_size in 8 4; do
5501 .section .debug_info,$section_flags
5503 .4byte $dwarf4_debug_info_size
5505 .4byte .Ldebug_abbrev0
5506 .byte 0x$dwarf4_addr_size
5508 .ascii \"GNU C17\\0\"
5512 .${dwarf4_addr_size}byte .Ltext0
5513 .${dwarf4_addr_size}byte .Letext0-.Ltext0
5514 .4byte .Ldebug_line0
5520 .${dwarf4_addr_size}byte .LFB0
5521 .${dwarf4_addr_size}byte .LFE0-.LFB0
5525 .section .debug_abbrev,$section_flags
5541 .byte 0x$dwarf4_high_pc_form
5562 .byte 0x$dwarf4_high_pc_form
5568 .section .debug_aranges,$section_flags
5569 .4byte $dwarf4_debug_aranges_size
5571 .4byte .Ldebug_info0
5576 .${dwarf4_addr_size}byte .Ltext0
5577 .${dwarf4_addr_size}byte .Letext0-.Ltext0
5578 .${dwarf4_addr_size}byte 0
5579 .${dwarf4_addr_size}byte 0
5580 .section .debug_line,$section_flags
5582 .4byte .LELT0-.LSLT0
5585 .4byte .LELTP0-.LASLTP0
5613 .byte 0x$dwarf4_line_sz
5615 .${dwarf4_addr_size}byte .LM1
5620 .byte 0x$dwarf4_line_sz
5622 .${dwarf4_addr_size}byte .LM2
5627 .byte 0x$dwarf4_line_sz
5629 .${dwarf4_addr_size}byte .Letext0
5634 .section .debug_str,$section_flags
5638 if test $dwarf4_addr_size = 4; then
5639 gcc_GAS_CHECK_FEATURE([assembly of compiler generated 32-bit .debug_line],
5640 gcc_cv_as_debug_line_32_flag,,
5642 [dwarf4_success=yes])
5644 gcc_GAS_CHECK_FEATURE([assembly of compiler generated 64-bit .debug_line],
5645 gcc_cv_as_debug_line_64_flag,,
5647 [dwarf4_success=yes])
5649 if test $dwarf4_success = yes; then
5651 gcc_GAS_CHECK_FEATURE([--gdwarf-4 not refusing compiler generated .debug_line],
5652 gcc_cv_as_dwarf_4_debug_line_flag,
5653 [--gdwarf-4], [$conftest_s],,
5654 [dwarf4_success=yes])
5657 dwarf4_debug_info_size=0x36
5658 dwarf4_high_pc_form=6
5659 dwarf4_debug_aranges_size=0x1c
5663 if test $dwarf4_success = yes; then
5681 gcc_GAS_CHECK_FEATURE([--gdwarf-4 with the APP marker],
5682 gcc_cv_as_dwarf_4_app_flag,
5683 [--gdwarf-4], [$conftest_s],, [dwarf4_success=yes])
5686 if test $dwarf4_success = yes; then
5696 gcc_GAS_CHECK_FEATURE([working --gdwarf-4/--gdwarf-5 for all sources],
5697 gcc_cv_as_working_gdwarf_n_flag,
5701 if test x$gcc_cv_objdump != x \
5702 && $gcc_cv_objdump -W conftest.o 2>&1 \
5703 | grep conftest.s > /dev/null 2>&1; then
5704 gcc_cv_as_working_gdwarf_n_flag=no
5706 gcc_cv_as_working_gdwarf_n_flag=yes
5708 changequote([,])dnl])
5709 if test $gcc_cv_as_working_gdwarf_n_flag = yes; then
5710 AC_DEFINE(HAVE_AS_WORKING_DWARF_N_FLAG, 1,
5711 [Define if your assembler supports --gdwarf-4/--gdwarf-5 even with
5712 compiler generated .debug_line.])
5716 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
5717 gcc_cv_as_debug_prefix_map_flag,
5718 [--debug-prefix-map /a=/b], [$insn],,
5719 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
5720 [Define if your assembler supports the --debug-prefix-map option.])])
5723 gcc_GAS_CHECK_FEATURE([compressed debug sections],
5724 gcc_cv_as_compress_debug,,,
5725 [# gas compiled without zlib cannot compress debug sections and warns
5726 # about it, but still exits successfully. So check for this, too.
5727 if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null
5729 gcc_cv_as_compress_debug=0
5730 elif $gcc_cv_as --compress-debug-sections=zlib -o conftest.o conftest.s > /dev/null 2>&1
5732 gcc_cv_as_compress_debug=1
5733 gcc_cv_as_compress_debug_option="--compress-debug-sections"
5734 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
5735 # Since binutils 2.40, gas supports --compress-debug-sections=zstd.
5736 if $gcc_cv_as --compress-debug-sections=zstd -o conftest.o conftest.s > /dev/null 2>&1
5738 gcc_cv_as_compress_debug=2
5741 gcc_cv_as_compress_debug=0
5743 AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug,
5744 [Define to the level of your assembler's compressed debug section support.])
5745 AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option",
5746 [Define to the assembler option to enable compressed debug sections.])
5747 AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option",
5748 [Define to the assembler option to disable compressed debug sections.])
5750 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,,
5752 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
5753 [Define if your assembler supports .lcomm with an alignment field.])])
5755 if test x$with_sysroot = x && test x$host = x$target \
5756 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
5757 && test "$prefix" != "NONE"; then
5758 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
5759 [Define to PREFIX/include if cpp should also search that directory.])
5762 # Determine the version of glibc, if any, used on the target.
5763 AC_MSG_CHECKING([for target glibc version])
5764 AC_ARG_WITH([glibc-version],
5765 [AS_HELP_STRING([--with-glibc-version=M.N],
5766 [assume GCC used with glibc version M.N or later])], [
5767 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
5768 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
5769 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
5771 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
5773 glibc_version_major=0
5774 glibc_version_minor=0
5775 [if test -f $target_header_dir/features.h \
5776 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
5777 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
5778 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
5779 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
5781 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
5782 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MAJOR], [$glibc_version_major],
5783 [GNU C Library major version number used on the target, or 0.])
5784 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MINOR], [$glibc_version_minor],
5785 [GNU C Library minor version number used on the target, or 0.])
5787 AC_ARG_ENABLE(gnu-unique-object,
5788 [AS_HELP_STRING([--enable-gnu-unique-object],
5789 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
5790 [case $enable_gnu_unique_object in
5792 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
5793 Valid choices are 'yes' and 'no'.]) ;;
5795 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,,
5796 [.type foo, '$target_type_format_char'gnu_unique_object],,
5797 # We need to unquote above to to use the definition from config.gcc.
5798 # Also check for ld.so support, i.e. glibc 2.11 or higher.
5799 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
5801 if test x$enable_gnu_unique_object = xyes; then
5802 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
5803 [Define if your assembler supports @gnu_unique_object.])
5806 AC_CACHE_CHECK([assembler for tolerance to line number 0],
5807 [gcc_cv_as_line_zero],
5808 [gcc_cv_as_line_zero=no
5809 if test "x$gcc_cv_as" != x; then
5810 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
5811 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
5812 test "x`cat conftest.out`" = x
5814 gcc_cv_as_line_zero=yes
5816 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
5817 cat conftest.s >&AS_MESSAGE_LOG_FD
5818 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
5819 cat conftest.out >&AS_MESSAGE_LOG_FD
5821 rm -f conftest.o conftest.s conftest.out
5823 if test "x$gcc_cv_as_line_zero" = xyes; then
5824 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
5825 [Define if the assembler won't complain about a line such as # 0 "" 2.])
5828 AC_MSG_CHECKING(support for thin archives)
5829 thin_archive_support=no
5830 echo 'int main (void) { return 0; }' > conftest.c
5831 if ($AR --version | sed 1q | grep "GNU ar" \
5832 && $CC $CFLAGS -c conftest.c \
5833 && $AR rcT conftest.a conftest.o \
5834 && $CC $CFLAGS $LDFLAGS -o conftest conftest.a) >/dev/null 2>&1; then
5835 thin_archive_support=yes
5837 rm -f conftest.c conftest.o conftest.a conftest
5838 AC_MSG_RESULT($thin_archive_support)
5839 AC_SUBST(thin_archive_support)
5841 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
5842 gcc_cv_ld_eh_frame_hdr=no
5843 if test $in_tree_ld = yes ; then
5844 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
5845 && test $in_tree_ld_is_elf = yes; then
5846 gcc_cv_ld_eh_frame_hdr=yes
5848 elif test x$gcc_cv_ld != x; then
5849 if echo "$ld_ver" | grep GNU > /dev/null; then
5850 # Check if linker supports --eh-frame-hdr option
5851 if $gcc_cv_ld --help 2>&1 | grep eh-frame-hdr > /dev/null; then
5852 gcc_cv_ld_eh_frame_hdr=yes
5857 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
5858 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
5859 gcc_cv_ld_eh_frame_hdr=yes
5865 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
5866 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
5867 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
5868 [Define if your linker supports .eh_frame_hdr.])
5870 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
5872 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
5873 gcc_cv_ld_eh_frame_ciev3=no
5874 if test $in_tree_ld = yes ; then
5875 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5876 && test $in_tree_ld_is_elf = yes; then
5877 gcc_cv_ld_eh_frame_ciev3=yes
5879 elif test x$gcc_cv_ld != x; then
5880 if echo "$ld_ver" | grep GNU > /dev/null; then
5881 gcc_cv_ld_eh_frame_ciev3=yes
5882 if test 0"$ld_date" -lt 20040513; then
5883 if test -n "$ld_date"; then
5884 # If there was date string, but was earlier than 2004-05-13, fail
5885 gcc_cv_ld_eh_frame_ciev3=no
5886 elif test "$ld_vers_major" -lt 2; then
5887 gcc_cv_ld_eh_frame_ciev3=no
5888 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
5889 gcc_cv_ld_eh_frame_ciev3=no
5895 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
5896 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
5897 gcc_cv_ld_eh_frame_ciev3=yes
5903 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
5904 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
5905 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
5906 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
5908 AC_MSG_CHECKING(linker position independent executable support)
5910 if test $in_tree_ld = yes ; then
5912 # Full PIE support on Solaris was only introduced in gld 2.26.
5913 *-*-solaris2*) gcc_gld_pie_min_version=26 ;;
5914 *) gcc_gld_pie_min_version=15 ;;
5916 if test "$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 \
5917 && test $in_tree_ld_is_elf = yes; then
5920 elif test x$gcc_cv_ld != x; then
5921 # Check if linker supports -pie option
5922 if $gcc_cv_ld --help 2>&1 | grep -- -pie > /dev/null; then
5926 if echo "$ld_ver" | grep GNU > /dev/null \
5927 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
5934 *-*-solaris2.1[[1-9]]*)
5935 # Solaris 11.3 added PIE support.
5936 if $gcc_cv_ld -z help 2>&1 | grep -- type.*pie > /dev/null; then
5943 if test x"$gcc_cv_ld_pie" = xyes; then
5944 AC_DEFINE(HAVE_LD_PIE, 1,
5945 [Define if your linker supports PIE option.])
5947 AC_MSG_RESULT($gcc_cv_ld_pie)
5949 AC_MSG_CHECKING(linker PIE support with copy reloc)
5950 gcc_cv_ld_pie_copyreloc=no
5951 if test $gcc_cv_ld_pie = yes ; then
5952 if test $in_tree_ld = yes ; then
5953 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
5954 gcc_cv_ld_pie_copyreloc=yes
5956 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5957 # Check if linker supports -pie option with copy reloc
5959 i?86-*-linux* | x86_64-*-linux*)
5960 cat > conftest1.s <<EOF
5963 .type a_glob, @object
5968 cat > conftest2.s <<EOF
5971 .type main, @function
5973 movl %eax, a_glob(%rip)
5976 .section .data.rel,"aw",@progbits
5981 if $gcc_cv_as --64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5982 && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \
5983 && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5984 && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then
5985 gcc_cv_ld_pie_copyreloc=yes
5987 rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s
5992 AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC,
5993 [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`],
5994 [Define 0/1 if your linker supports -pie option with copy reloc.])
5995 AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc)
5997 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
5998 gcc_cv_ld_eh_gc_sections=no
5999 if test $in_tree_ld = yes ; then
6000 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
6001 && test $in_tree_ld_is_elf = yes; then
6002 gcc_cv_ld_eh_gc_sections=yes
6004 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
6005 cat > conftest.s <<EOF
6008 .type _start, @function
6011 .size _start, .-_start
6012 .section .text.foo,"ax",@progbits
6013 .type foo, @function
6017 .section .gcc_except_table.foo,"a",@progbits
6020 .section .eh_frame,"a",@progbits
6023 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
6024 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
6025 | grep "gc-sections option ignored" > /dev/null; then
6026 gcc_cv_ld_eh_gc_sections=no
6027 elif $gcc_cv_objdump -h conftest 2> /dev/null \
6028 | grep gcc_except_table > /dev/null; then
6029 gcc_cv_ld_eh_gc_sections=yes
6030 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
6031 if test x$gcc_cv_as_comdat_group != xyes; then
6032 gcc_cv_ld_eh_gc_sections=no
6033 cat > conftest.s <<EOF
6036 .type _start, @function
6039 .size _start, .-_start
6040 .section .gnu.linkonce.t.foo,"ax",@progbits
6041 .type foo, @function
6045 .section .gcc_except_table.foo,"a",@progbits
6048 .section .eh_frame,"a",@progbits
6051 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
6052 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
6053 | grep "gc-sections option ignored" > /dev/null; then
6054 gcc_cv_ld_eh_gc_sections=no
6055 elif $gcc_cv_objdump -h conftest 2> /dev/null \
6056 | grep gcc_except_table > /dev/null; then
6057 gcc_cv_ld_eh_gc_sections=yes
6063 rm -f conftest.s conftest.o conftest
6067 # ??? This apparently exposes a binutils bug with PC-relative relocations.
6068 gcc_cv_ld_eh_gc_sections=no
6071 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
6072 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
6073 [Define if your linker supports garbage collection of
6074 sections in presence of EH frames.])
6076 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
6078 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
6079 gcc_cv_ld_eh_gc_sections_bug=no
6080 if test $in_tree_ld = yes ; then
6081 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
6082 && test $in_tree_ld_is_elf = yes; then
6083 gcc_cv_ld_eh_gc_sections_bug=yes
6085 elif test x$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
6086 gcc_cv_ld_eh_gc_sections_bug=yes
6087 cat > conftest.s <<EOF
6090 .type _start, @function
6093 .size _start, .-_start
6094 .section .text.startup.foo,"ax",@progbits
6095 .type foo, @function
6099 .section .gcc_except_table.foo,"a",@progbits
6102 .section .eh_frame,"a",@progbits
6105 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
6106 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
6107 | grep "gc-sections option ignored" > /dev/null; then
6109 elif $gcc_cv_objdump -h conftest 2> /dev/null \
6110 | grep gcc_except_table > /dev/null; then
6111 gcc_cv_ld_eh_gc_sections_bug=no
6114 rm -f conftest.s conftest.o conftest
6116 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
6117 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
6118 [Define if your linker has buggy garbage collection of
6119 sections support when .text.startup.foo like sections are used.])
6121 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
6123 AC_MSG_CHECKING(linker for compressed debug sections)
6124 # GNU ld/gold support --compressed-debug-sections=zlib since binutils 2.26.
6125 if $gcc_cv_ld --help 2>&1 | grep -- '--compress-debug-sections.*\<zlib-gabi\>' > /dev/null; then
6126 gcc_cv_ld_compress_debug=1
6127 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
6128 # Detect zstd debug section compression support
6129 if $gcc_cv_ld --help 2>&1 | grep -- '--compress-debug-sections.*\<zstd\>' > /dev/null; then
6130 gcc_cv_ld_compress_debug=2
6136 # Introduced in Solaris 11.2.
6137 if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then
6138 gcc_cv_ld_compress_debug=1
6139 gcc_cv_ld_compress_debug_option="-z compress-sections"
6141 gcc_cv_ld_compress_debug=0
6145 # Assume linkers other than GNU ld don't support compessed debug
6147 gcc_cv_ld_compress_debug=0
6152 AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug,
6153 [Define to the level of your linker's compressed debug section support.])
6154 AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option",
6155 [Define to the linker option to enable compressed debug sections.])
6156 AC_MSG_RESULT($gcc_cv_ld_compress_debug)
6158 if test x"$ld64_flag" = x"yes"; then
6160 # Set defaults for possibly untestable items.
6161 gcc_cv_ld64_export_dynamic=0
6162 gcc_cv_ld64_platform_version=0
6164 if test "$build" = "$host"; then
6170 # On Darwin, because of FAT library support, it is often possible to execute
6171 # exes from compatible archs even when the host differs from the build system.
6172 case "$build","$host" in
6173 x86_64-*-darwin*,i?86-*-darwin* | powerpc64*-*-darwin*,powerpc*-*-darwin*)
6178 # If the configurer specified a minimum ld64 version to be supported, then use
6179 # that to determine feature support.
6180 if test x"${gcc_cv_ld64_version}" != x; then
6181 AC_MSG_CHECKING(ld64 specified version)
6182 gcc_cv_ld64_major=`echo "$gcc_cv_ld64_version" | sed -e 's/\..*//'`
6183 AC_MSG_RESULT($gcc_cv_ld64_major)
6184 if test "$gcc_cv_ld64_major" -ge 236; then
6185 gcc_cv_ld64_export_dynamic=1
6187 if test "$gcc_cv_ld64_major" -ge 512; then
6188 gcc_cv_ld64_platform_version=1
6190 elif test -x "$gcc_cv_ld" -a "$darwin_try_test" -eq 1; then
6191 # If the version was not specified, try to find it.
6192 AC_MSG_CHECKING(linker version)
6193 if test x"${gcc_cv_ld64_version}" = x; then
6194 gcc_cv_ld64_version=`$gcc_cv_ld -v 2>&1 | grep ld64 | sed s/.*ld64-// | awk '{print $1}'`
6196 AC_MSG_RESULT($gcc_cv_ld64_version)
6198 AC_MSG_CHECKING(linker for -export_dynamic support)
6199 gcc_cv_ld64_export_dynamic=1
6200 if $gcc_cv_ld -export_dynamic < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then
6201 gcc_cv_ld64_export_dynamic=0
6203 AC_MSG_RESULT($gcc_cv_ld64_export_dynamic)
6205 AC_MSG_CHECKING(linker for -platform_version support)
6206 gcc_cv_ld64_platform_version=1
6207 if $gcc_cv_ld -platform_version macos 10.5 0.0 < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then
6208 gcc_cv_ld64_platform_version=0
6210 AC_MSG_RESULT($gcc_cv_ld64_platform_version)
6213 if test x"${gcc_cv_ld64_version}" != x; then
6214 AC_DEFINE_UNQUOTED(LD64_VERSION, "${gcc_cv_ld64_version}",
6215 [Define to ld64 version.])
6218 AC_DEFINE_UNQUOTED(LD64_HAS_EXPORT_DYNAMIC, $gcc_cv_ld64_export_dynamic,
6219 [Define to 1 if ld64 supports '-export_dynamic'.])
6221 AC_DEFINE_UNQUOTED(LD64_HAS_PLATFORM_VERSION, $gcc_cv_ld64_platform_version,
6222 [Define to 1 if ld64 supports '-platform_version'.])
6225 if test x"$dsymutil_flag" = x"yes"; then
6227 # If the user specified a dsymutil path, then we will already have the
6228 # version string, otherwise, pick it up.
6229 if test x"$gcc_cv_dsymutil" = x; then
6230 AC_MSG_WARN([dsymutil is a required tool for this system, but not found])
6231 dsymutil_vers="tool unspecified"
6232 elif test x"$dsymutil_vers" = x; then
6233 dsymutil_vers=`$gcc_cv_dsymutil -v /dev/null 2>&1`
6236 dsymutil_temp=`echo $dsymutil_vers | sed 1q`
6237 AC_MSG_CHECKING(dsymutil version "$dsymutil_temp")
6238 if echo $dsymutil_temp | grep dwarfutils- > /dev/null; then
6239 dsymutil_kind=DWARFUTILS
6240 dsymutil_vers=`echo $dsymutil_temp | sed 's/.*dwarfutils-\([[0-9\.]]*\).*/\1/'`
6241 elif echo $dsymutil_temp | grep clang- > /dev/null; then
6243 dsymutil_vers=`echo $dsymutil_temp | sed 's/.*clang-\([[0-9\.]]*\).*/\1/'`
6244 elif echo $dsymutil_temp | grep 'LLVM version ' > /dev/null; then
6246 dsymutil_vers=`echo $dsymutil_temp | sed 's/.*LLVM\ version\ \([[0-9\.]]*\).*/\1/'`
6248 dsymutil_kind=UNKNOWN
6251 dsymutil_major=`expr "$dsymutil_vers" : '\([[0-9]]*\)'`
6252 dsymutil_minor=`expr "$dsymutil_vers" : '[[0-9]]*\.\([[0-9]]*\)'`
6253 dsymutil_tiny=`expr "$dsymutil_vers" : '[[0-9]]*\.[[0-9]]*\.\([[0-9]]*\)'`
6254 if test x"${dsymutil_minor}" = x; then
6257 if test x"${dsymutil_tiny}" = x; then
6260 AC_DEFINE_UNQUOTED(DSYMUTIL_VERSION, [$dsymutil_kind,${dsymutil_major},${dsymutil_minor},${dsymutil_tiny}],
6261 [Define to the dsymutil version.])
6262 AC_MSG_RESULT($dsymutil_vers : $dsymutil_kind ${dsymutil_major} ${dsymutil_minor} ${dsymutil_tiny} )
6266 win32 | pe | cygwin* | mingw32*)
6267 AC_MSG_CHECKING(broken PE linker dwarf5 support)
6268 gcc_cv_ld_broken_pe_dwarf5=yes
6269 if test $in_tree_ld = yes ; then
6270 if grep -q '\.debug_loclists.*BLOCK.*__section_alignment__.*NOLOAD.*:' \
6271 $gcc_cv_ld_gld_srcdir/scripttempl/pe*.sc \
6272 && grep -q '\.debug_rnglists.*BLOCK.*__section_alignment__.*NOLOAD.*:' \
6273 $gcc_cv_ld_gld_srcdir/scripttempl/pe*.sc; then
6274 gcc_cv_ld_broken_pe_dwarf5=no
6277 if $gcc_cv_ld --verbose 2>&1 | grep -q '\.debug_loclists.*BLOCK.*__section_alignment__.*NOLOAD.*:' \
6278 && $gcc_cv_ld --verbose 2>&1 | grep -q '\.debug_rnglists.*BLOCK.*__section_alignment__.*NOLOAD.*:'; then
6279 gcc_cv_ld_broken_pe_dwarf5=no
6282 if test x$gcc_cv_ld_broken_pe_dwarf5 = xyes; then
6283 AC_DEFINE(HAVE_LD_BROKEN_PE_DWARF5, 1,
6284 [Define if the PE linker has broken DWARF 5 support.])
6286 AC_MSG_RESULT($gcc_cv_ld_broken_pe_dwarf5)
6288 AC_MSG_CHECKING(PE linker --disable-dynamicbase support)
6289 gcc_cv_ld_disable_dynamicbase=no
6290 if test $in_tree_ld = yes; then
6291 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 36 -o "$gcc_cv_gld_major_version" -gt 2; then \
6292 gcc_cv_ld_disable_dynamicbase=yes
6295 if $gcc_cv_ld --help 2>&1 | grep -q 'disable\-]dynamicbase' > /dev/null; then
6296 gcc_cv_ld_disable_dynamicbase=yes
6299 if test x"$gcc_cv_ld_disable_dynamicbase" = xyes; then
6300 AC_DEFINE(HAVE_LD_PE_DISABLE_DYNAMICBASE, 1,
6301 [Define if the PE linker supports --disable-dynamicbase option.])
6303 AC_MSG_RESULT($gcc_cv_ld_disable_dynamicbase)
6311 AC_CACHE_CHECK(linker --as-needed support,
6312 gcc_cv_ld_as_needed,
6313 [gcc_cv_ld_as_needed=no
6314 gcc_cv_ld_as_needed_option='--as-needed'
6315 gcc_cv_ld_no_as_needed_option='--no-as-needed'
6316 if test $in_tree_ld = yes ; then
6317 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
6318 && test $in_tree_ld_is_elf = yes; then
6319 gcc_cv_ld_as_needed=yes
6320 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 28; then
6321 gcc_cv_ld_as_needed_option='--push-state --as-needed'
6322 gcc_cv_ld_no_as_needed_option='--pop-state'
6325 elif test x$gcc_cv_ld != x; then
6326 # Check if linker supports --as-needed and --no-as-needed options
6327 if $gcc_cv_ld --help 2>&1 | grep as-needed > /dev/null; then
6328 gcc_cv_ld_as_needed=yes
6329 if $gcc_cv_ld --help 2>&1 | grep push-state > /dev/null \
6330 && $gcc_cv_ld --help 2>&1 | grep pop-state > /dev/null \
6331 && echo "$ld_ver" | grep GNU > /dev/null \
6332 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 28; then
6333 # Use these options only when both ld.bfd and ld.gold support
6334 # --push-state/--pop-state, which unfortunately wasn't added
6336 gcc_cv_ld_as_needed_option='--push-state --as-needed'
6337 gcc_cv_ld_no_as_needed_option='--pop-state'
6340 case "$target:$gnu_ld" in
6342 # Solaris 2 ld always supports -z ignore/-z record. Prefer the native
6344 gcc_cv_ld_as_needed=yes
6345 gcc_cv_ld_as_needed_option="-z ignore"
6346 gcc_cv_ld_no_as_needed_option="-z record"
6350 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
6351 # dl_iterate_phdr, i.e. since Solaris 11.
6353 *-*-solaris2.1[[1-9]]*)
6355 i?86-*-* | x86_64-*-*)
6356 if echo "$ld_ver" | grep GNU > /dev/null; then
6357 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
6358 gcc_cv_ld_as_needed=no
6364 gcc_cv_ld_as_needed=no
6368 if test x"$gcc_cv_ld_as_needed" = xyes; then
6369 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
6370 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
6371 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
6372 [Define to the linker option to ignore unused dependencies.])
6373 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
6374 [Define to the linker option to keep unused dependencies.])
6377 AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities)
6378 saved_LDFLAGS="$LDFLAGS"
6379 for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do
6380 LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map"
6381 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
6382 [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no])
6384 LDFLAGS="$saved_LDFLAGS"
6385 if test "x$gcc_cv_ld_clearcap" = xyes; then
6386 AC_DEFINE([HAVE_LD_CLEARCAP], 1,
6387 [Define if the linker supports clearing hardware capabilities via mapfile.])
6388 AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map])
6390 AC_MSG_RESULT($gcc_cv_ld_clearcap)
6396 emul_name="-melf32lppc"
6399 emul_name="-melf32ppc"
6402 AC_CACHE_CHECK(linker .gnu.attributes long double support,
6404 [gcc_cv_ld_ppc_attr=no
6405 if test x"$ld_is_gold" = xyes; then
6406 gcc_cv_ld_ppc_attr=yes
6407 elif test $in_tree_ld = yes ; then
6408 if test "$gcc_cv_gld_major_version" -eq 2 \
6409 -a "$gcc_cv_gld_minor_version" -ge 28 \
6410 -o "$gcc_cv_gld_major_version" -gt 2; then
6411 gcc_cv_ld_ppc_attr=yes
6413 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6414 # check that merging the long double .gnu_attribute doesn't warn
6415 cat > conftest1.s <<EOF
6418 cat > conftest2.s <<EOF
6421 if $gcc_cv_as -a32 -o conftest1.o conftest1.s > /dev/null 2>&1 \
6422 && $gcc_cv_as -a32 -o conftest2.o conftest2.s > /dev/null 2>&1 \
6423 && $gcc_cv_ld $emul_name -r -o conftest.o conftest1.o conftest2.o > /dev/null 2> conftest.err \
6424 && test ! -s conftest.err; then
6425 gcc_cv_ld_ppc_attr=yes
6427 rm -f conftest.err conftest.o conftest1.o conftest2.o conftest1.s conftest2.s
6430 if test x$gcc_cv_ld_ppc_attr = xyes; then
6431 AC_DEFINE(HAVE_LD_PPC_GNU_ATTR_LONG_DOUBLE, 1,
6432 [Define if your PowerPC linker has .gnu.attributes long double support.])
6437 case "$target:$tm_file" in
6438 powerpc64*-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
6441 emul_name="-melf64lppc"
6444 emul_name="-melf64ppc"
6447 emul_name="-melf64lppc_fbsd"
6450 emul_name="-melf64ppc_fbsd"
6453 AC_CACHE_CHECK(linker support for omitting dot symbols,
6454 gcc_cv_ld_no_dot_syms,
6455 [gcc_cv_ld_no_dot_syms=no
6456 if test x"$ld_is_gold" = xyes; then
6457 gcc_cv_ld_no_dot_syms=yes
6458 elif test $in_tree_ld = yes ; then
6459 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
6460 gcc_cv_ld_no_dot_syms=yes
6462 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6463 cat > conftest1.s <<EOF
6467 cat > conftest2.s <<EOF
6468 .section ".opd","aw"
6473 .quad .LEfoo,.TOC.@tocbase,0
6479 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
6480 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
6481 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
6482 gcc_cv_ld_no_dot_syms=yes
6484 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
6487 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
6488 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
6489 [Define if your PowerPC64 linker only needs function descriptor syms.])
6492 AC_CACHE_CHECK(linker large toc support,
6493 gcc_cv_ld_large_toc,
6494 [gcc_cv_ld_large_toc=no
6495 if test x"$ld_is_gold" = xyes; then
6496 gcc_cv_ld_large_toc=yes
6497 elif test $in_tree_ld = yes ; then
6498 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
6499 gcc_cv_ld_large_toc=yes
6501 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6502 cat > conftest.s <<EOF
6503 .section ".tbss","awT",@nobits
6509 addis 9,13,ie0@got@tprel@ha
6510 ld 9,ie0@got@tprel@l(9)
6512 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
6513 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
6514 gcc_cv_ld_large_toc=yes
6516 rm -f conftest conftest.o conftest.s
6519 if test x"$gcc_cv_ld_large_toc" = xyes; then
6520 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
6521 [Define if your PowerPC64 linker supports a large TOC.])
6524 AC_CACHE_CHECK(linker toc pointer alignment,
6525 gcc_cv_ld_toc_align,
6526 [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then
6527 cat > conftest.s <<EOF
6532 .section .data.rel.ro,"aw",@progbits
6537 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
6538 && $gcc_cv_ld $emul_name -z norelro -o conftest conftest.o > /dev/null 2>&1; then
6539 gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'`
6541 rm -f conftest conftest.o conftest.s
6544 if test -n "$gcc_cv_ld_toc_align" && test $gcc_cv_ld_toc_align -gt 8; then
6545 AC_DEFINE_UNQUOTED(POWERPC64_TOC_POINTER_ALIGNMENT, $gcc_cv_ld_toc_align,
6546 [Define to .TOC. alignment forced by your linker.])
6553 AC_CACHE_CHECK(linker large toc support,
6554 gcc_cv_ld_large_toc,
6555 [gcc_cv_ld_large_toc=no
6556 if test x$gcc_cv_as != x ; then
6557 cat > conftest.s <<EOF
6567 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
6568 gcc_cv_ld_large_toc=yes
6570 rm -f conftest conftest.o conftest.s
6573 if test x"$gcc_cv_ld_large_toc" = xyes; then
6574 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
6575 [Define if your PowerPC64 linker supports a large TOC.])
6580 AC_CACHE_CHECK(linker --build-id support,
6582 [gcc_cv_ld_buildid=no
6583 if test $in_tree_ld = yes ; then
6584 if test "$gcc_cv_gld_major_version" -eq 2 -a \
6585 "$gcc_cv_gld_minor_version" -ge 18 -o \
6586 "$gcc_cv_gld_major_version" -gt 2 \
6587 && test $in_tree_ld_is_elf = yes; then
6588 gcc_cv_ld_buildid=yes
6590 elif test x$gcc_cv_ld != x; then
6591 if $gcc_cv_ld --help 2>&1 | grep build-id > /dev/null; then
6592 gcc_cv_ld_buildid=yes
6595 if test x"$gcc_cv_ld_buildid" = xyes; then
6596 AC_DEFINE(HAVE_LD_BUILDID, 1,
6597 [Define if your linker supports --build-id.])
6600 AC_ARG_ENABLE(linker-build-id,
6601 [AS_HELP_STRING([--enable-linker-build-id],
6602 [compiler will always pass --build-id to linker])],
6604 enable_linker_build_id=no)
6606 if test x"$enable_linker_build_id" = xyes; then
6607 if test x"$gcc_cv_ld_buildid" = xyes; then
6608 AC_DEFINE(ENABLE_LD_BUILDID, 1,
6609 [Define if gcc should always pass --build-id to linker.])
6611 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
6615 # In binutils 2.21, GNU ld gained support for new emulations fully
6616 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
6617 AC_CACHE_CHECK(linker *_sol2 emulation support,
6618 gcc_cv_ld_sol2_emulation,
6619 [gcc_cv_ld_sol2_emulation=no
6620 if test $in_tree_ld = yes ; then
6621 if test "$gcc_cv_gld_major_version" -eq 2 -a \
6622 "$gcc_cv_gld_minor_version" -ge 21 -o \
6623 "$gcc_cv_gld_major_version" -gt 2 \
6624 && test $in_tree_ld_is_elf = yes; then
6625 gcc_cv_ld_sol2_emulation=yes
6627 elif test x$gcc_cv_ld != x; then
6628 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
6629 grep _sol2 > /dev/null; then
6630 gcc_cv_ld_sol2_emulation=yes
6633 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
6634 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
6635 [Define if your linker supports the *_sol2 emulations.])
6638 AC_CACHE_CHECK(linker --sysroot support,
6640 [gcc_cv_ld_sysroot=no
6641 if test $in_tree_ld = yes ; then
6642 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
6643 gcc_cv_ld_sysroot=yes
6645 elif test x$gcc_cv_ld != x; then
6646 if $gcc_cv_ld --help 2>&1 | grep sysroot > /dev/null; then
6647 gcc_cv_ld_sysroot=yes
6650 if test x"$gcc_cv_ld_sysroot" = xyes; then
6651 AC_DEFINE(HAVE_LD_SYSROOT, 1,
6652 [Define if your linker supports --sysroot.])
6657 # Check for system-provided CRTs on Solaris 11.x and Solaris 12.
6658 AC_CACHE_CHECK([system-provided CRTs on Solaris],
6659 gcc_cv_solaris_crts,
6660 [gcc_cv_solaris_crts=no
6661 if test x$host != x$target; then
6662 if test "x$with_sysroot" = xyes; then
6663 target_sysroot="${test_exec_prefix}/${target_noncanonical}/sys-root"
6665 target_sysroot="${with_sysroot}"
6668 target_libdir="$target_sysroot/usr/lib"
6669 # At the time they were added, gcrt1.o became a symlink for backwards
6670 # compatibility on x86, while crt1.o was added on sparc, so check for that.
6672 i?86-*-solaris2* | x86_64-*-solaris2*)
6673 if test -h "$target_libdir/gcrt1.o"; then gcc_cv_solaris_crts=yes; fi
6676 if test -f "$target_libdir/crt1.o"; then gcc_cv_solaris_crts=yes; fi
6681 if test x$gcc_cv_solaris_crts = xyes; then
6682 AC_DEFINE(HAVE_SOLARIS_CRTS, 1,
6683 [Define if the system-provided CRTs are present on Solaris.])
6686 AC_ARG_ENABLE(libssp,
6687 [AS_HELP_STRING([--enable-libssp], [enable linking against libssp])],
6688 [case "${enableval}" in
6692 AC_MSG_ERROR([unknown libssp setting $enableval])
6696 # Test for stack protector support in target C library.
6697 AC_CACHE_CHECK(__stack_chk_fail in target C library,
6698 gcc_cv_libc_provides_ssp,
6699 [gcc_cv_libc_provides_ssp=no
6700 if test "x$enable_libssp" = "xno"; then
6701 gcc_cv_libc_provides_ssp=yes
6702 elif test "x$enable_libssp" = "xyes"; then
6703 gcc_cv_libc_provides_ssp=no
6707 # All versions of musl provide stack protector
6708 gcc_cv_libc_provides_ssp=yes;;
6709 *-*-linux* | *-*-kfreebsd*-gnu)
6710 # glibc 2.4 and later provides __stack_chk_fail and
6711 # either __stack_chk_guard, or TLS access to stack guard canary.
6712 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
6713 [if test -f $target_header_dir/features.h \
6714 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
6715 $target_header_dir/features.h > /dev/null; then
6716 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
6717 $target_header_dir/features.h > /dev/null && \
6718 test -f $target_header_dir/bits/uClibc_config.h && \
6719 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
6720 $target_header_dir/bits/uClibc_config.h > /dev/null; then
6721 gcc_cv_libc_provides_ssp=yes
6723 # all versions of Bionic support stack protector
6724 elif test -f $target_header_dir/sys/cdefs.h \
6725 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
6726 $target_header_dir/sys/cdefs.h > /dev/null; then
6727 gcc_cv_libc_provides_ssp=yes
6731 # Avoid complicated tests (see
6732 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
6733 # simply assert that glibc does provide this, which is true for all
6734 # realistically usable GNU/Hurd configurations.
6735 # All supported versions of musl provide it as well
6736 gcc_cv_libc_provides_ssp=yes;;
6737 *-*-darwin* | *-*-freebsd* | *-*-netbsd*)
6738 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
6739 [echo "no __stack_chk_fail on this target"])
6741 *) gcc_cv_libc_provides_ssp=no ;;
6745 if test x$gcc_cv_libc_provides_ssp = xyes; then
6746 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
6747 [Define if your target C library provides stack protector support])
6750 # Check whether --enable-default-ssp was given.
6751 AC_ARG_ENABLE(default-ssp,
6752 [AS_HELP_STRING([--enable-default-ssp],
6753 [enable Stack Smashing Protection as default])],[
6754 if test x$gcc_cv_libc_provides_ssp = xyes; then
6756 ia64*-*-*) enable_default_ssp=no ;;
6757 *) enable_default_ssp=$enableval ;;
6760 enable_default_ssp=no
6762 enable_default_ssp=no)
6763 if test x$enable_default_ssp = xyes ; then
6764 AC_DEFINE(ENABLE_DEFAULT_SSP, 1,
6765 [Define if your target supports default stack protector and it is enabled.])
6767 AC_SUBST([enable_default_ssp])
6769 # Test for <sys/sdt.h> on the target.
6770 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
6771 AC_CACHE_CHECK([sys/sdt.h in the target C library], [gcc_cv_sys_sdt_h], [
6773 if test -f $target_header_dir/sys/sdt.h; then
6774 gcc_cv_sys_sdt_h=yes
6777 AS_IF([test x$gcc_cv_sys_sdt_h = xyes], [
6778 AC_DEFINE([HAVE_SYS_SDT_H], [1],
6779 [Define if your target C library provides sys/sdt.h])
6782 # Check if TFmode long double should be used by default or not.
6783 # Some glibc targets used DFmode long double, but with glibc 2.4
6784 # and later they can use TFmode.
6786 powerpc*-*-linux* | \
6790 AC_ARG_WITH(long-double-128,
6791 [AS_HELP_STRING([--with-long-double-128],
6792 [use 128-bit long double by default])],
6793 gcc_cv_target_ldbl128="$with_long_double_128", [
6795 s390*-*-linux-musl*)
6796 gcc_cv_target_ldbl128=yes
6798 powerpc*-*-linux-musl*)
6799 gcc_cv_target_ldbl128=no
6802 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
6803 [gcc_cv_target_ldbl128=no
6804 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
6805 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
6806 && gcc_cv_target_ldbl128=yes
6814 if test x$gcc_cv_target_ldbl128 = xyes; then
6815 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
6816 [Define if TFmode long double should be the default])
6819 # Check if TFmode long double target should use the IBM extended double or IEEE
6820 # 128-bit floating point formats if long doubles are 128-bits long. The long
6821 # double type can only be switched on powerpc64 bit Linux systems where VSX is
6822 # supported. Other PowerPC systems do not build the IEEE 128-bit emulator in
6824 AC_ARG_WITH([long-double-format],
6825 [AS_HELP_STRING([--with-long-double-format={ieee,ibm}]
6826 [Specify whether PowerPC long double uses IEEE or IBM format])],[
6827 case "$target:$with_long_double_format" in
6828 powerpc64le-*-linux*:ieee | powerpc64le-*-linux*:ibm)
6831 powerpc64-*-linux*:ieee | powerpc64-*-linux*:ibm)
6832 # IEEE 128-bit emulation is only built on 64-bit VSX Linux systems
6834 power7 | power8 | power9 | power1*)
6838 AC_MSG_ERROR([Configuration option --with-long-double-format is only \
6839 supported if the default cpu is power7 or newer])
6840 with_long_double_format=""
6844 powerpc64*-*-linux*:*)
6845 AC_MSG_ERROR([--with-long-double-format argument should be ibm or ieee])
6846 with_long_double_format=""
6849 AC_MSG_ERROR([Configure option --with-long-double-format is only supported \
6850 on 64-bit PowerPC VSX Linux systems])
6851 with_long_double_format=""
6856 # Check if the target LIBC supports exporting the AT_PLATFORM and AT_HWCAP
6857 # values in the TCB. Currently, only GLIBC 2.23 and later support this.
6858 gcc_cv_libc_provides_hwcap_in_tcb=no
6861 GCC_GLIBC_VERSION_GTE_IFELSE([2], [23], [gcc_cv_libc_provides_hwcap_in_tcb=yes], )
6864 if test x$gcc_cv_libc_provides_hwcap_in_tcb = xyes; then
6865 AC_DEFINE(TARGET_LIBC_PROVIDES_HWCAP_IN_TCB, 1,
6866 [Define if your target C Library provides the AT_HWCAP value in the TCB])
6869 # Check if the target LIBC handles PT_GNU_STACK.
6870 gcc_cv_libc_gnustack=unknown
6872 mips*-*-linux-musl*)
6873 gcc_cv_libc_gnustack=yes
6876 GCC_GLIBC_VERSION_GTE_IFELSE([2], [31], [gcc_cv_libc_gnustack=yes], )
6879 if test x$gcc_cv_libc_gnustack = xyes; then
6880 AC_DEFINE(TARGET_LIBC_GNUSTACK, 1,
6881 [Define if your target C Library properly handles PT_GNU_STACK])
6884 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
6885 gcc_cv_target_dl_iterate_phdr=unknown
6888 # <link.h> needs both a dl_iterate_phdr declaration and support for
6889 # compilation with largefile support.
6890 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
6891 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
6892 gcc_cv_target_dl_iterate_phdr=yes
6894 gcc_cv_target_dl_iterate_phdr=no
6897 *-*-dragonfly* | *-*-freebsd*)
6898 if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then
6899 gcc_cv_target_dl_iterate_phdr=yes
6901 gcc_cv_target_dl_iterate_phdr=no
6905 gcc_cv_target_dl_iterate_phdr=yes
6908 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
6909 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
6910 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
6911 [Define if your target C library provides the `dl_iterate_phdr' function.])
6913 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
6915 # We no longer support different GC mechanisms. Emit an error if
6916 # the user configures with --with-gc.
6918 [AS_HELP_STRING([--with-gc={page,zone}],
6919 [this option is not supported anymore. It used to choose
6920 the garbage collection mechanism to use with the compiler])],
6921 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
6924 # Libraries to use on the host. This will normally be set by the top
6925 # level Makefile. Here we simply capture the value for our Makefile.
6926 if test -z "${HOST_LIBS+set}"; then
6931 # Use the system's zlib library.
6934 dnl Very limited version of automake's enable-maintainer-mode
6936 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
6937 dnl maintainer-mode is disabled by default
6938 AC_ARG_ENABLE(maintainer-mode,
6939 [AS_HELP_STRING([--enable-maintainer-mode],
6940 [enable make rules and dependencies not useful
6941 (and sometimes confusing) to the casual installer])],
6942 maintainer_mode=$enableval,
6945 AC_MSG_RESULT($maintainer_mode)
6947 if test "$maintainer_mode" = "yes"; then
6954 dnl Variables for tags utilities; copied from automake 1.16.4+'s init.m4
6955 if test -z "$CTAGS"; then
6959 if test -z "$ETAGS"; then
6963 if test -z "$CSCOPE"; then
6968 dnl Whether to prevent multiple front-ends from linking at the same time
6970 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
6971 AC_ARG_ENABLE(link-mutex,
6972 [AS_HELP_STRING([--enable-link-mutex],
6973 [avoid linking multiple front-ends at once to avoid thrashing
6974 on the build machine])],
6975 do_link_mutex=$enableval,
6977 AC_MSG_RESULT($do_link_mutex)
6979 if test "$do_link_mutex" = "yes"; then
6984 AC_SUBST(DO_LINK_MUTEX)
6986 dnl Whether to prevent multiple GCC front-ends from linking at the same time
6988 AC_MSG_CHECKING([whether to serialize linking of multiple front-ends])
6989 AC_ARG_ENABLE(link-serialization,
6990 [AS_HELP_STRING([--enable-link-serialization],
6991 [avoid linking multiple GCC front-ends at once using make
6992 dependencies to avoid thrashing on the build machine])],
6993 do_link_serialization=$enableval,
6994 do_link_serialization=no)
6995 AC_MSG_RESULT($do_link_serialization)
6997 case "$do_link_serialization" in
6999 DO_LINK_SERIALIZATION=1;;
7000 [[1-9]] | [[1-9]][[0-9]] | [[1-9]][[0-9]][[0-9]])
7001 DO_LINK_SERIALIZATION=$do_link_serialization;;
7003 DO_LINK_SERIALIZATION=;;
7005 AC_MSG_ERROR(bad value ${do_link_serialization} given for --enable-link-serialization) ;;
7007 AC_SUBST(DO_LINK_SERIALIZATION)
7013 # Make empty files to contain the specs and options for each language.
7014 # Then add #include lines to for a compiler that has specs and/or options.
7020 # These (without "all_") are set in each config-lang.in.
7021 # `language' must be a single word so is spelled singularly.
7024 all_outputs='Makefile'
7025 # List of language configure and makefile fragments.
7026 all_lang_configurefrags=
7028 # Additional files for gengtype
7029 all_gtfiles="$target_gtfiles"
7031 # These are the languages that are set in --enable-languages,
7032 # and are available in the GCC tree.
7033 all_selected_languages=
7035 # Add the language fragments.
7036 # Languages are added via two mechanisms. Some information must be
7037 # recorded in makefile variables, these are defined in config-lang.in.
7038 # We accumulate them and plug them into the main Makefile.
7039 # The other mechanism is a set of hooks for each of the main targets
7040 # like `clean', `install', etc.
7042 language_hooks="Make-hooks"
7044 for lang in ${srcdir}/*/config-lang.in
7047 test "$lang" = "${srcdir}/*/config-lang.in" && continue
7049 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
7050 if test "x$lang_alias" = x
7052 echo "$lang doesn't set \$language." 1>&2
7055 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
7056 subdirs="$subdirs $subdir"
7058 # $gcc_subdir is where the gcc integration files are to be found
7059 # for a language, both for internal compiler purposes (compiler
7060 # sources implementing front-end to GCC tree converters), and for
7061 # build infrastructure purposes (Make-lang.in, etc.)
7063 # This will be <subdir> (relative to $srcdir) if a line like
7064 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
7065 # is found in <langdir>/config-lang.in, and will remain <langdir>
7068 # Except for the language alias (fetched above), the regular
7069 # "config-lang.in" contents are always retrieved from $gcc_subdir,
7070 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
7071 # only this and the language alias.
7073 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
7074 if [ "$gcc_subdir" = "" ]; then
7075 gcc_subdir="$subdir"
7078 case ",$enable_languages," in
7080 all_selected_languages="$all_selected_languages $lang_alias"
7081 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
7082 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
7094 . ${srcdir}/$gcc_subdir/config-lang.in
7095 if test "x$language" = x
7097 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
7102 case ",$enable_languages," in
7105 for i in $subdir_requires; do
7106 test -f "${srcdir}/$i/config-lang.in" && continue
7114 all_lang_configurefrags="$all_lang_configurefrags \$(srcdir)/$gcc_subdir/config-lang.in"
7115 if test "x$language" = xc && test -n "$all_lang_makefrags"; then
7116 # Put c/Make-lang.in fragment first to match serialization languages order.
7117 all_lang_makefrags="\$(srcdir)/$gcc_subdir/Make-lang.in $all_lang_makefrags"
7119 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
7121 if test -f $srcdir/$gcc_subdir/lang.opt; then
7122 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
7123 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
7125 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
7126 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
7128 all_languages="$all_languages $language"
7129 all_compilers="$all_compilers $compilers"
7130 all_outputs="$all_outputs $outputs"
7131 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
7132 case ",$enable_languages," in
7134 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
7136 AC_SUBST(enable_lto)
7143 for language in $all_selected_languages
7145 check_languages="$check_languages check-$language"
7149 for language in $all_selected_languages
7151 selftest_languages="$selftest_languages selftest-$language"
7154 # We link each language in with a set of hooks, reached indirectly via
7155 # lang.${target}. Only do so for selected languages.
7159 target_list="all.cross start.encap rest.encap tags \
7160 install-common install-man install-info install-dvi install-pdf \
7161 install-html dvi pdf html uninstall info man srcextra srcman srcinfo \
7162 mostlyclean clean distclean maintainer-clean install-plugin"
7164 for t in $target_list
7167 for lang in $all_selected_languages
7171 echo "lang.$t: $x" >> Make-hooks
7174 echo "ifeq (\$(DO_LINK_SERIALIZATION),)" >> Make-hooks
7175 echo "SERIAL_LIST =" >> Make-hooks
7176 echo else >> Make-hooks
7180 serialization_languages=c
7181 for lang in $all_selected_languages
7183 test $lang = c && continue
7184 if test $lang = lto; then
7185 serialization_languages="$serialization_languages lto1 lto2"
7187 serialization_languages="$serialization_languages $lang"
7190 for lang in $serialization_languages
7192 test $lang = c && continue
7193 lang_cnt=`expr $lang_cnt + 1`
7194 lang_list=" $prev$lang_list"
7197 echo "SERIAL_LIST = \$(wordlist \$(DO_LINK_SERIALIZATION),$lang_cnt,$lang_list)" >> Make-hooks
7198 echo endif >> Make-hooks
7199 echo "SERIAL_COUNT = `expr $lang_cnt + 1`" >> Make-hooks
7200 echo "INDEX.c = 0" >> Make-hooks
7202 for lang in $serialization_languages
7204 test $lang = c && continue
7205 echo "$lang.prev = \$(if \$(word $lang_cnt,\$(SERIAL_LIST)),\$(\$(word $lang_cnt,\$(SERIAL_LIST)).serial))" >> Make-hooks
7206 echo "INDEX.$lang = $lang_idx" >> Make-hooks
7207 lang_cnt=`expr $lang_cnt - 1`
7208 lang_idx=`expr $lang_idx + 1`
7212 # Option include files
7215 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
7216 option_includes="option-includes.mk"
7217 AC_SUBST_FILE(option_includes)
7225 echo "dir ." > .gdbinit
7226 echo "dir ${srcdir}" >> .gdbinit
7227 if test x$gdb_needs_out_file_path = xyes
7229 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
7231 if test "x$subdirs" != x; then
7234 echo "dir ${srcdir}/$s" >> .gdbinit
7237 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
7238 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
7240 # Put a breakpoint on __asan_report_error to help with debugging buffer
7243 *-fsanitize=address*)
7244 echo "source ${srcdir}/gdbasan.in" >> .gdbinit
7248 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
7249 AC_SUBST(gcc_tooldir)
7252 # Find a directory in which to install a shared libgcc.
7254 AC_ARG_ENABLE(version-specific-runtime-libs,
7255 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
7256 [specify that runtime libraries should be
7257 installed in a compiler-specific directory])])
7259 # Substitute configuration variables
7262 AC_SUBST(all_compilers)
7263 AC_SUBST(all_gtfiles)
7264 AC_SUBST(all_lang_configurefrags)
7265 AC_SUBST(all_lang_makefrags)
7266 AC_SUBST(all_languages)
7267 AC_SUBST(all_selected_languages)
7268 AC_SUBST(build_exeext)
7269 AC_SUBST(build_install_headers_dir)
7270 AC_SUBST(build_xm_file_list)
7271 AC_SUBST(build_xm_include_list)
7272 AC_SUBST(build_xm_defines)
7273 AC_SUBST(build_file_translate)
7274 AC_SUBST(check_languages)
7275 AC_SUBST(selftest_languages)
7276 AC_SUBST(cpp_install_dir)
7277 AC_SUBST(xmake_file)
7278 AC_SUBST(tmake_file)
7279 AC_SUBST(TM_ENDIAN_CONFIG)
7280 AC_SUBST(TM_MULTILIB_CONFIG)
7281 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
7282 AC_SUBST(extra_gcc_objs)
7283 AC_SUBST(user_headers_inc_next_pre)
7284 AC_SUBST(user_headers_inc_next_post)
7285 AC_SUBST(extra_headers_list)
7286 AC_SUBST(extra_objs)
7287 AC_SUBST(extra_programs)
7288 AC_SUBST(float_h_file)
7289 AC_SUBST(gcc_config_arguments)
7290 AC_SUBST(gcc_gxx_include_dir)
7291 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
7292 AC_SUBST(gcc_gxx_libcxx_include_dir)
7293 AC_SUBST(gcc_gxx_libcxx_include_dir_add_sysroot)
7294 AC_SUBST(host_exeext)
7295 AC_SUBST(host_xm_file_list)
7296 AC_SUBST(host_xm_include_list)
7297 AC_SUBST(host_xm_defines)
7298 AC_SUBST(out_host_hook_obj)
7300 AC_SUBST(lang_opt_files)
7301 AC_SUBST(lang_specs_files)
7302 AC_SUBST(lang_tree_files)
7303 AC_SUBST(local_prefix)
7305 AC_SUBST(objc_boehm_gc)
7307 AC_SUBST(out_object_file)
7308 AC_SUBST(common_out_file)
7309 AC_SUBST(common_out_object_file)
7310 AC_SUBST(tm_file_list)
7311 AC_SUBST(tm_include_list)
7312 AC_SUBST(tm_defines)
7313 AC_SUBST(tm_p_file_list)
7314 AC_SUBST(tm_p_include_list)
7315 AC_SUBST(tm_d_file_list)
7316 AC_SUBST(tm_d_include_list)
7317 AC_SUBST(xm_file_list)
7318 AC_SUBST(xm_include_list)
7319 AC_SUBST(xm_defines)
7320 AC_SUBST(use_gcc_stdint)
7321 AC_SUBST(c_target_objs)
7322 AC_SUBST(cxx_target_objs)
7323 AC_SUBST(fortran_target_objs)
7324 AC_SUBST(d_target_objs)
7325 AC_SUBST(target_cpu_default)
7327 AC_SUBST_FILE(language_hooks)
7330 if test x${build} = x${host} ; then
7331 if test x${host} = x${target} ; then
7332 echo "Links are now set up to build a native compiler for ${target}." 1>&2
7334 echo "Links are now set up to build a cross-compiler" 1>&2
7335 echo " from ${host} to ${target}." 1>&2
7338 if test x${host} = x${target} ; then
7339 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
7340 echo " for ${target}." 1>&2
7342 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
7343 echo " from ${host} to ${target}." 1>&2
7347 AC_ARG_VAR(GMPLIBS,[How to link GMP])
7348 AC_ARG_VAR(GMPINC,[How to find GMP include files])
7350 AC_ARG_VAR(ISLLIBS,[How to link isl])
7351 AC_ARG_VAR(ISLINC,[How to find isl include files])
7352 if test "x${ISLLIBS}" != "x" ; then
7353 AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.])
7357 AC_SUBST(pluginlibs)
7358 AC_SUBST(enable_plugin)
7359 if test x"$enable_plugin" = x"yes"; then
7360 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
7364 # Enable --enable-host-shared
7365 AC_ARG_ENABLE(host-shared,
7366 [AS_HELP_STRING([--enable-host-shared],
7367 [build host code as shared libraries])],
7368 [PICFLAG=-fPIC], [PICFLAG=])
7369 AC_SUBST(enable_host_shared)
7373 AC_ARG_ENABLE(libquadmath-support,
7374 [AS_HELP_STRING([--disable-libquadmath-support],
7375 [disable libquadmath support for Fortran])],
7376 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
7377 ENABLE_LIBQUADMATH_SUPPORT=yes)
7378 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
7379 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
7380 [Define to 1 to enable libquadmath support])
7384 # Specify what hash style to use by default.
7385 AC_ARG_WITH([linker-hash-style],
7386 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
7387 [specify the linker hash style])],
7388 [case x"$withval" in
7390 LINKER_HASH_STYLE=sysv
7393 LINKER_HASH_STYLE=gnu
7396 LINKER_HASH_STYLE=both
7399 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
7402 [LINKER_HASH_STYLE=''])
7403 if test x"${LINKER_HASH_STYLE}" != x; then
7404 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
7405 [The linker hash style])
7408 # Specify what should be the default of -fdiagnostics-color option.
7409 AC_ARG_WITH([diagnostics-color],
7410 [AC_HELP_STRING([--with-diagnostics-color={never,auto,auto-if-env,always}],
7411 [specify the default of -fdiagnostics-color option
7412 auto-if-env stands for -fdiagnostics-color=auto if
7413 GCC_COLOR environment variable is present and
7414 -fdiagnostics-color=never otherwise])],
7415 [case x"$withval" in
7417 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_NO
7420 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO
7423 DIAGNOSTICS_COLOR_DEFAULT=-1
7426 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_YES
7429 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-color])
7432 [DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO])
7433 AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT,
7434 [The default for -fdiagnostics-color option])
7436 # Specify what should be the default of -fdiagnostics-urls option.
7437 AC_ARG_WITH([diagnostics-urls],
7438 [AC_HELP_STRING([--with-diagnostics-urls={never,auto,auto-if-env,always}],
7439 [specify the default of -fdiagnostics-urls option
7440 auto-if-env stands for -fdiagnostics-urls=auto if
7441 GCC_URLS or TERM_URLS environment variable is present and
7442 -fdiagnostics-urls=never otherwise])],
7443 [case x"$withval" in
7445 DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_NO
7448 DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_AUTO
7451 DIAGNOSTICS_URLS_DEFAULT=-1
7454 DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_YES
7457 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-urls])
7460 [DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_AUTO])
7461 AC_DEFINE_UNQUOTED(DIAGNOSTICS_URLS_DEFAULT, $DIAGNOSTICS_URLS_DEFAULT,
7462 [The default for -fdiagnostics-urls option])
7464 # Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit
7465 # of jit/jit-playback.cc.
7466 gcc_driver_version=`eval "${get_gcc_base_ver} $srcdir/BASE-VER"`
7467 echo "gcc_driver_version: ${gcc_driver_version}"
7468 cat > gcc-driver-name.h <<EOF
7469 #define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_driver_version}${exeext}"
7472 # Check whether --enable-default-pie was given.
7473 AC_ARG_ENABLE(default-pie,
7474 [AS_HELP_STRING([--enable-default-pie],
7475 [enable Position Independent Executable as default])],
7476 enable_default_pie=$enableval,
7477 enable_default_pie=no)
7478 if test x$enable_default_pie = xyes ; then
7479 AC_DEFINE(ENABLE_DEFAULT_PIE, 1,
7480 [Define if your target supports default PIE and it is enabled.])
7482 AC_SUBST([enable_default_pie])
7484 # Check if -fno-PIE works.
7485 AC_CACHE_CHECK([for -fno-PIE option],
7487 [saved_CXXFLAGS="$CXXFLAGS"
7488 CXXFLAGS="$CXXFLAGS -fno-PIE"
7489 AC_COMPILE_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
7490 [gcc_cv_c_no_fpie=yes],
7491 [gcc_cv_c_no_fpie=no])
7492 CXXFLAGS="$saved_CXXFLAGS"])
7493 if test "$gcc_cv_c_no_fpie" = "yes"; then
7494 NO_PIE_CFLAGS="-fno-PIE"
7496 AC_SUBST([NO_PIE_CFLAGS])
7498 # Check if -no-pie works.
7499 AC_CACHE_CHECK([for -no-pie option],
7501 [saved_LDFLAGS="$LDFLAGS"
7502 LDFLAGS="$LDFLAGS -no-pie"
7503 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
7504 [gcc_cv_no_pie=yes],
7506 LDFLAGS="$saved_LDFLAGS"])
7507 if test "$gcc_cv_no_pie" = "yes"; then
7508 NO_PIE_FLAG="-no-pie"
7510 AC_SUBST([NO_PIE_FLAG])
7512 # Enable Intel CET on Intel CET enabled host if jit is enabled.
7513 GCC_CET_HOST_FLAGS(CET_HOST_FLAGS)
7514 case x$enable_languages in
7521 AC_SUBST(CET_HOST_FLAGS)
7523 # Check linker supports '-z bndplt'
7524 ld_bndplt_support=no
7525 AC_MSG_CHECKING(linker -z bndplt option)
7526 if test x"$ld_is_gold" = xno; then
7527 if test $in_tree_ld = yes ; then
7528 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
7529 ld_bndplt_support=yes
7531 elif test x$gcc_cv_ld != x; then
7532 # Check if linker supports -a bndplt option
7533 if $gcc_cv_ld --help 2>&1 | grep -- '-z bndplt' > /dev/null; then
7534 ld_bndplt_support=yes
7538 if test x"$ld_bndplt_support" = xyes; then
7539 AC_DEFINE(HAVE_LD_BNDPLT_SUPPORT, 1,
7540 [Define if your linker supports -z bndplt])
7542 AC_MSG_RESULT($ld_bndplt_support)
7544 # Check linker supports '--push-state'/'--pop-state'
7545 ld_pushpopstate_support=no
7546 AC_MSG_CHECKING(linker --push-state/--pop-state options)
7547 if test x"$ld_is_gold" = xno; then
7548 if test $in_tree_ld = yes ; then
7549 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
7550 ld_pushpopstate_support=yes
7552 elif test x$gcc_cv_ld != x; then
7553 # Check if linker supports --push-state/--pop-state options
7554 if $gcc_cv_ld --help 2>&1 | grep -- '--push-state' > /dev/null; then
7555 ld_pushpopstate_support=yes
7559 if test x"$ld_pushpopstate_support" = xyes; then
7560 AC_DEFINE(HAVE_LD_PUSHPOPSTATE_SUPPORT, 1,
7561 [Define if your linker supports --push-state/--pop-state])
7563 AC_MSG_RESULT($ld_pushpopstate_support)
7565 # On s390, float_t has historically been statically defined as double for no
7566 # good reason. To comply with the C standard in the light of this definition,
7567 # gcc has evaluated float expressions in double precision when in
7568 # standards-compatible mode or when given -fexcess-precision=standard. To enable
7569 # a smooth transition towards the new model used by most architectures, where
7570 # gcc describes its behavior via the macro __FLT_EVAL_METHOD__ and glibc derives
7571 # float_t from that, this behavior can be configured with
7572 # --enable-s390-excess-float-precision. When given as enabled, that flag selects
7573 # the old model. When omitted, native builds and cross compiles that have target
7574 # libc headers will detect whether libc clamps float_t to double and in that
7575 # case maintain the old model. Otherwise, they will default to the new model.
7576 AC_ARG_ENABLE(s390-excess-float-precision,
7577 [AS_HELP_STRING([--enable-s390-excess-float-precision],
7578 [on s390 targets, evaluate float with double precision
7579 when in standards-conforming mode])],
7580 [],[enable_s390_excess_float_precision=auto])
7584 if test x"$enable_s390_excess_float_precision" = xauto; then
7585 # Can we autodetect the behavior of the target libc?
7586 if test "$target" = "$host" -a "$host" = "$build"; then
7587 enable_s390_excess_float_precision=autodetect
7588 elif test "x$with_headers" != xno; then
7589 # cross build. are target headers available?
7590 # carefully coerce the build-system compiler to use target headers
7591 saved_CXXFLAGS="$CXXFLAGS"
7592 fixed_XGCC_FLAGS_FOR_TARGET=`echo "$XGCC_FLAGS_FOR_TARGET" | sed 's/-B/-idirafter/g'`
7593 CROSS_TEST_CXXFLAGS="-nostdinc $fixed_XGCC_FLAGS_FOR_TARGET"
7594 CXXFLAGS="$CROSS_TEST_CXXFLAGS"
7595 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
7597 ]])], [enable_s390_excess_float_precision=autodetect], [])
7598 CXXFLAGS="$saved_CXXFLAGS"
7601 if test x"$enable_s390_excess_float_precision" = xautodetect; then
7602 saved_CXXFLAGS="$CXXFLAGS"
7603 if ! test "$target" = "$host" -a "$host" = "$build"; then
7604 CXXFLAGS="$CROSS_TEST_CXXFLAGS"
7605 unset CROSS_TEST_CXXFLAGS
7607 AC_CACHE_CHECK([for glibc clamping float_t to double],
7608 gcc_cv_float_t_clamped_to_double, [
7609 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
7610 #define __FLT_EVAL_METHOD__ 0
7612 int dummy[sizeof(float_t) == sizeof(double) ? 1 : -1];
7614 [gcc_cv_float_t_clamped_to_double=yes],
7615 [gcc_cv_float_t_clamped_to_double=no])])
7616 CXXFLAGS="$saved_CXXFLAGS"
7617 enable_s390_excess_float_precision="$gcc_cv_float_t_clamped_to_double"
7619 # no way to detect behavior of target libc, default to new model
7620 enable_s390_excess_float_precision=no
7624 GCC_TARGET_TEMPLATE(ENABLE_S390_EXCESS_FLOAT_PRECISION)
7625 if test x"$enable_s390_excess_float_precision" = xyes; then
7626 AC_DEFINE(ENABLE_S390_EXCESS_FLOAT_PRECISION, 1,
7627 [Define to enable evaluating float expressions with double precision in
7628 standards-compatible mode on s390 targets.])
7633 # Configure the subdirectories
7634 # AC_CONFIG_SUBDIRS($subdirs)
7636 # Create the Makefile
7637 # and configure language subdirectories
7638 AC_CONFIG_FILES($all_outputs)
7640 AC_CONFIG_COMMANDS([default],
7642 case ${CONFIG_HEADERS} in
7643 *auto-host.h:config.in*)
7646 # Make sure all the subdirs exist.
7647 for d in $subdirs doc build common c-family
7649 test -d $d || mkdir $d
7652 [subdirs='$subdirs'])