2 # Process this file with autoconf to generate a configuration script.
4 # Copyright (C) 1997-2023 Free Software Foundation, Inc.
6 #This file is part of GCC.
8 #GCC is free software; you can redistribute it and/or modify it under
9 #the terms of the GNU General Public License as published by the Free
10 #Software Foundation; either version 3, or (at your option) any later
13 #GCC is distributed in the hope that it will be useful, but WITHOUT
14 #ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 #FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
18 #You should have received a copy of the GNU General Public License
19 #along with GCC; see the file COPYING3. If not see
20 #<http://www.gnu.org/licenses/>.
22 # --------------------------------
23 # Initialization and sanity checks
24 # --------------------------------
27 AC_CONFIG_SRCDIR(tree.cc)
28 AC_CONFIG_MACRO_DIRS([../config] [..])
29 AC_CONFIG_HEADER(auto-host.h:config.in)
31 gcc_version=`cat $srcdir/BASE-VER`
33 # Determine the host, build, and target systems
38 # Determine the noncanonical host name, for Ada.
41 # Determine the noncanonical target name, for directory use.
42 ACX_NONCANONICAL_TARGET
44 # Used for constructing correct paths for offload compilers.
45 real_target_noncanonical=${target_noncanonical}
48 # Determine the target- and build-specific subdirectories
51 # Set program_transform_name
54 # Check for bogus environment variables.
55 # Test if LIBRARY_PATH contains the notation for the current directory
56 # since this would lead to problems installing/building glibc.
57 # LIBRARY_PATH contains the current directory if one of the following
59 # - one of the terminals (":" and ";") is the first or last sign
60 # - two terminals occur directly after each other
61 # - the path contains an element with a dot in it
62 AC_MSG_CHECKING(LIBRARY_PATH variable)
64 case ${LIBRARY_PATH} in
65 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
66 library_path_setting="contains current directory"
69 library_path_setting="ok"
73 AC_MSG_RESULT($library_path_setting)
74 if test "$library_path_setting" != "ok"; then
76 *** LIBRARY_PATH shouldn't contain the current directory when
77 *** building gcc. Please change the environment variable
78 *** and run configure again.])
81 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
82 # since this would lead to problems installing/building glibc.
83 # GCC_EXEC_PREFIX contains the current directory if one of the following
85 # - one of the terminals (":" and ";") is the first or last sign
86 # - two terminals occur directly after each other
87 # - the path contains an element with a dot in it
88 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
90 case ${GCC_EXEC_PREFIX} in
91 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
92 gcc_exec_prefix_setting="contains current directory"
95 gcc_exec_prefix_setting="ok"
99 AC_MSG_RESULT($gcc_exec_prefix_setting)
100 if test "$gcc_exec_prefix_setting" != "ok"; then
102 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
103 *** building gcc. Please change the environment variable
104 *** and run configure again.])
111 # Specify the local prefix
113 AC_ARG_WITH(local-prefix,
114 [AS_HELP_STRING([--with-local-prefix=DIR],
115 [specifies directory to put local include])],
116 [case "${withval}" in
117 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
119 *) local_prefix=$with_local_prefix ;;
122 # Default local prefix if it is empty
123 if test x$local_prefix = x; then
124 local_prefix=/usr/local
127 AC_ARG_WITH([native-system-header-dir],
128 [ --with-native-system-header-dir=dir
129 use dir as the directory to look for standard
130 system header files in. Defaults to /usr/include.],
132 case ${with_native_system_header_dir} in
133 yes|no) AC_MSG_ERROR([bad value ${withval} given for --with-native-system-header-dir]) ;;
134 /* | [[A-Za-z]]:[[\\/]]*) ;;
135 *) AC_MSG_ERROR([--with-native-system-header-dir argument ${withval} must be an absolute directory]) ;;
137 configured_native_system_header_dir="${withval}"
138 ], [configured_native_system_header_dir=])
140 AC_ARG_WITH(build-sysroot,
141 [AS_HELP_STRING([--with-build-sysroot=sysroot],
142 [use sysroot as the system root during the build])],
143 [if test x"$withval" != x ; then
144 SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
146 [SYSROOT_CFLAGS_FOR_TARGET=])
147 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
149 if test "x$prefix" = xNONE; then
150 test_prefix=/usr/local
154 if test "x$exec_prefix" = xNONE; then
155 test_exec_prefix=$test_prefix
157 test_exec_prefix=$exec_prefix
161 [AS_HELP_STRING([[--with-sysroot[=DIR]]],
162 [search for usr/lib, usr/include, et al, within DIR])],
164 case ${with_sysroot} in
166 */) with_sysroot=`echo $with_sysroot | sed 's,/$,,'` ;;
168 case ${with_sysroot} in
169 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
170 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
173 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
174 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
176 case ${TARGET_SYSTEM_ROOT} in
177 "${test_prefix}"|"${test_prefix}/"*|\
178 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
179 '${prefix}'|'${prefix}/'*|\
180 '${exec_prefix}'|'${exec_prefix}/'*)
181 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
182 TARGET_SYSTEM_ROOT_DEFINE="$t"
187 TARGET_SYSTEM_ROOT_DEFINE=
188 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
190 AC_SUBST(TARGET_SYSTEM_ROOT)
191 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
192 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
194 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
195 # passed in by the toplevel make and thus we'd get different behavior
196 # depending on where we built the sources.
198 # Specify the g++ header file directory
199 AC_ARG_WITH(gxx-include-dir,
200 [AS_HELP_STRING([--with-gxx-include-dir=DIR],
201 [specifies directory to put g++ header files])],
202 [case "${withval}" in
203 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
205 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
208 # If both --with-sysroot and --with-gxx-include-dir are passed, we interpolate
209 # the former in the latter and, upon success, compute gcc_gxx_include_dir as
210 # relative to the sysroot.
211 gcc_gxx_include_dir_add_sysroot=0
213 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
214 if test x${gcc_gxx_include_dir} = x; then
215 if test x${enable_version_specific_runtime_libs} = xyes; then
216 gcc_gxx_include_dir='${libsubdir}/include/c++'
218 libstdcxx_incdir='include/c++/$(version)'
219 if test x$host != x$target; then
220 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
222 gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir"
224 elif test "${with_sysroot+set}" = set; then
225 gcc_gxx_without_sysroot=`expr "${gcc_gxx_include_dir}" : "${with_sysroot}"'\(.*\)'`
226 if test "${gcc_gxx_without_sysroot}"; then
227 gcc_gxx_include_dir="${gcc_gxx_without_sysroot}"
228 gcc_gxx_include_dir_add_sysroot=1
232 # Configuration for an alternate set of C++ headers.
233 gcc_gxx_libcxx_include_dir=
234 # Specify the alternate g++ header file directory
235 AC_ARG_WITH(gxx-libcxx-include-dir,
236 [AS_HELP_STRING([--with-gxx-libcxx-include-dir=DIR],
237 [specifies directory to find libc++ header files])],
238 [case "${withval}" in
239 yes) AC_MSG_ERROR(bad value ${withval} given for libc++ include directory) ;;
241 *) gcc_gxx_libcxx_include_dir=$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 $wf_opt])),
579 ACX_PROG_CC_WARNING_OPTS(
580 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes ],
581 [])), [c_loose_warn])
582 ACX_PROG_CXX_WARNING_OPTS(
583 m4_quote(m4_do([-Wmissing-format-attribute ], [-Wconditionally-supported ],
584 [-Woverloaded-virtual])), [strict_warn])
585 ACX_PROG_CC_WARNING_OPTS(
586 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
587 ACX_PROG_CXX_WARNING_ALMOST_PEDANTIC(
588 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
589 [-Wno-overlength-strings])), [strict_warn])
590 ACX_PROG_CXX_WARNINGS_ARE_ERRORS([manual], [strict_warn])
592 # The above macros do nothing if the compiler is not GCC. However, the
593 # Makefile has more goo to add other flags, so these variables are used
594 # to enable warnings only for GCC.
597 if test "x$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${enable_multiarch} = xyes; then
891 AC_DEFINE(ENABLE_MULTIARCH, 1, [If --with-multiarch option is used])
893 AC_MSG_CHECKING(for multiarch configuration)
894 AC_SUBST(enable_multiarch)
895 AC_MSG_RESULT($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 (or later)])],
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 $gcc_cv_prog_makeinfo_modern = no; then
1237 *** Makeinfo is missing or too old.
1238 *** Info documentation will not be built.])
1243 AC_SUBST(BUILD_INFO)
1245 # Determine whether makeinfo supports the CONTENTS_OUTPUT_LOCATION variable.
1246 # If it does, we want to pass it to makeinfo in order to restore the old
1247 # behavior of @{summary,}contents placement.
1248 MAKEINFO_TOC_INLINE_FLAG=
1249 AS_IF([test x"$MAKEINFO" != x], [
1250 AC_CACHE_CHECK([for CONTENTS_OUTPUT_LOCATION support in $MAKEINFO],
1251 [gcc_cv_texi_add_toc_inline_flags], [
1252 # Detect the unknown variable CONTENTS_OUTPUT_LOCATION warning
1253 if "$MAKEINFO" -c CONTENTS_OUTPUT_LOCATION=inline </dev/null 2>&1 \
1254 | grep CONTENTS_OUTPUT_LOCATION >/dev/null; then
1255 gcc_cv_texi_add_toc_inline_flags=no
1257 gcc_cv_texi_add_toc_inline_flags=yes
1260 if test x"$gcc_cv_texi_add_toc_inline_flags" = xyes; then
1261 MAKEINFO_TOC_INLINE_FLAG='-c CONTENTS_OUTPUT_LOCATION=inline'
1264 AC_SUBST([MAKEINFO_TOC_INLINE_FLAG])
1266 # Is pod2man recent enough to regenerate manpages?
1267 AC_MSG_CHECKING([for recent Pod::Man])
1268 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
1270 GENERATED_MANPAGES=generated-manpages
1275 AC_SUBST(GENERATED_MANPAGES)
1277 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
1280 dnl Don't use AC_PROG_LEX; we insist on flex.
1281 dnl LEXLIB is not useful in gcc.
1282 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
1285 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
1288 ACX_CHECK_PROG_VER(PYTHON, python3, --version,
1289 [Python.* \([0-9][0-9.]*\)],
1290 [3.[4-9]*|3.[1-9][0-9]*|[4-9].*|[1-9][0-9]*])
1291 if test $gcc_cv_prog_python3_modern = no; then
1293 *** Python3 is missing.
1294 *** Documentation for modula-2 will not include the target SYSTEM module.])
1299 AC_SUBST(HAVE_PYTHON)
1301 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
1302 # check for build == host before using them.
1305 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
1306 && test -d ../binutils ; then
1307 NM='${objdir}/../binutils/nm-new'
1309 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
1313 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
1314 && test -d ../binutils ; then
1315 AR='${objdir}/../binutils/ar'
1317 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
1320 # The jit documentation looks better if built with sphinx, but can be
1321 # built with texinfo if sphinx is not available.
1322 # Set "doc_build_sys" to "sphinx" or "texinfo" accordingly.
1323 AC_CHECK_PROG(doc_build_sys, sphinx-build, sphinx, texinfo)
1325 # --------------------
1326 # Checks for C headers
1327 # --------------------
1329 # Need to reject headers which give warnings, so that the -Werror bootstrap
1330 # works later. *sigh* This needs to come before all header checks.
1337 AC_HEADER_TIOCGWINSZ
1338 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
1339 fcntl.h ftw.h unistd.h sys/auxv.h sys/file.h sys/time.h sys/mman.h \
1340 sys/resource.h sys/param.h sys/times.h sys/stat.h sys/locking.h \
1341 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
1343 # Check for thread headers.
1344 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
1345 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
1347 # These tests can't be done till we know if we have limits.h.
1351 # ----------------------
1352 # Checks for C++ headers
1353 # ----------------------
1355 dnl Autoconf will give an error in the configure script if there is no
1356 dnl C++ preprocessor. Hack to prevent that.
1357 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
1359 m4_popdef([AC_MSG_ERROR])[]dnl
1361 AC_CHECK_HEADERS(unordered_map)
1362 AC_CHECK_HEADERS(tr1/unordered_map)
1363 AC_CHECK_HEADERS(ext/hash_map)
1366 # Dependency checking.
1370 AC_CONFIG_COMMANDS([gccdepdir],[
1371 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR
1372 for lang in $subdirs c-family common analyzer rtl-ssa
1374 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs $lang/$DEPDIR
1375 done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR])
1377 ZW_PROG_COMPILER_DEPENDENCIES([CXX])
1384 # These libraries may be used by collect2.
1385 # We may need a special search path to get them linked.
1386 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
1388 for libs in '' -lld -lmld \
1389 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
1390 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1393 AC_TRY_LINK_FUNC(ldopen,
1394 [gcc_cv_collect2_libs="$libs"; break])
1397 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1398 case $gcc_cv_collect2_libs in
1400 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1402 AC_SUBST(COLLECT2_LIBS)
1404 # When building Ada code on Alpha, we need exc_resume which is usually in
1405 # -lexc. So test for it.
1408 AC_SEARCH_LIBS(exc_resume, exc)
1411 AC_SUBST(GNAT_LIBEXC)
1413 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1416 AC_SEARCH_LIBS(kstat_open, kstat)
1417 EXTRA_GCC_LIBS="$LIBS"
1419 AC_SUBST(EXTRA_GCC_LIBS)
1421 # Solaris needs libsocket and libnsl for socket functions before 11.4.
1422 # C++ needs those for libcody.
1430 # Some systems put ldexp and frexp in libm instead of libc; assume
1431 # they're both in the same place. jcf-dump needs them.
1434 AC_SEARCH_LIBS(ldexp, m)
1439 # Some systems need dlopen
1442 AC_SEARCH_LIBS(dlopen, dl)
1447 # Use <inttypes.h> only if it exists,
1448 # doesn't clash with <sys/types.h>, declares intmax_t and defines
1450 AC_MSG_CHECKING(for inttypes.h)
1451 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1452 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1453 [[#define __STDC_FORMAT_MACROS
1454 #include <sys/types.h>
1455 #include <inttypes.h>]],
1460 [gcc_cv_header_inttypes_h=yes],
1461 [gcc_cv_header_inttypes_h=no])])
1462 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1463 if test $gcc_cv_header_inttypes_h = yes; then
1464 AC_DEFINE(HAVE_INTTYPES_H, 1,
1465 [Define if you have a working <inttypes.h> header file.])
1468 # Look for the ZSTD package.
1471 AC_SUBST(ZSTD_INCLUDE)
1475 AC_SUBST(ZSTD_CPPFLAGS)
1476 AC_SUBST(ZSTD_LDFLAGS)
1478 [AS_HELP_STRING([--with-zstd=PATH],
1479 [specify prefix directory for installed zstd library.
1480 Equivalent to --with-zstd-include=PATH/include
1481 plus --with-zstd-lib=PATH/lib])])
1482 AC_ARG_WITH(zstd-include,
1483 [AS_HELP_STRING([--with-zstd-include=PATH],
1484 [specify directory for installed zstd include files])])
1485 AC_ARG_WITH(zstd-lib,
1486 [AS_HELP_STRING([--with-zstd-lib=PATH],
1487 [specify directory for the installed zstd library])])
1488 case "x$with_zstd" in
1494 *) ZSTD_INCLUDE=$with_zstd/include
1495 ZSTD_LIB=$with_zstd/lib
1499 if test "x$with_zstd" != xno; then
1500 if test "x$with_zstd_include" != x; then
1501 ZSTD_INCLUDE=$with_zstd_include
1503 if test "x$with_zstd_lib" != x; then
1504 ZSTD_LIB=$with_zstd_lib
1506 if test "x$ZSTD_INCLUDE" != x \
1507 && test "x$ZSTD_INCLUDE" != xno; then
1508 ZSTD_CPPFLAGS=-I$ZSTD_INCLUDE
1510 if test "x$ZSTD_LIB" != x \
1511 && test "x$ZSTD_LIB" != xno; then
1512 ZSTD_LDFLAGS=-L$ZSTD_LIB
1515 CXXFLAGS="$CXXFLAGS $ZSTD_CPPFLAGS"
1516 LDFLAGS="$LDFLAGS $ZSTD_LDFLAGS"
1518 # LTO can use zstd compression algorithm
1521 AC_SEARCH_LIBS(ZSTD_compress, zstd,, gcc_cv_header_zstd_h=no)
1526 AC_MSG_CHECKING(for zstd.h)
1527 AC_CACHE_VAL(gcc_cv_header_zstd_h,
1528 # We require version 1.3.0 or later. This is the first version that has
1529 # ZSTD_getFrameContentSize.
1530 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1532 #if ZSTD_VERSION_NUMBER < 10300
1533 #error "need zstd 1.3.0 or better"
1535 [gcc_cv_header_zstd_h=yes],
1536 [gcc_cv_header_zstd_h=no])])
1537 AC_MSG_RESULT($gcc_cv_header_zstd_h)
1538 if test $gcc_cv_header_zstd_h = yes; then
1539 AC_DEFINE(HAVE_ZSTD_H, 1,
1540 [Define if you have a working <zstd.h> header file.])
1541 elif test "x$with_zstd" != x; then
1542 as_fn_error $? "Unable to find zstd.h. See config.log for details." "$LINENO" 5
1546 dnl Disabled until we have a complete test for buggy enum bitfields.
1547 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1549 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1550 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1551 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1552 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1553 putchar_unlocked putc_unlocked)
1554 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoq \
1555 popen sysconf strsignal getrusage nl_langinfo \
1556 gettimeofday mbstowcs wcswidth mmap posix_fallocate setlocale \
1557 gcc_UNLOCKED_FUNCS madvise mallinfo mallinfo2 fstatat getauxval)
1559 if test x$ac_cv_func_mbstowcs = xyes; then
1560 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1561 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1567 [gcc_cv_func_mbstowcs_works=yes],
1568 [gcc_cv_func_mbstowcs_works=no],
1569 [gcc_cv_func_mbstowcs_works=yes])])
1570 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1571 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1572 [Define this macro if mbstowcs does not crash when its
1573 first argument is NULL.])
1577 AC_CHECK_TYPE(ssize_t, int)
1578 AC_CHECK_TYPE(caddr_t, char *)
1579 AC_CHECK_TYPE(sighander_t,
1580 AC_DEFINE(HAVE_SIGHANDLER_T, 1,
1581 [Define if <sys/signal.h> defines sighandler_t]),
1584 GCC_AC_FUNC_MMAP_BLACKLIST
1588 # Under VMS, vfork works very differently than on Unix. The standard test
1589 # won't work, and it isn't easily adaptable. It makes more sense to
1591 ac_cv_func_vfork_works=yes
1598 # Until we have in-tree GNU iconv:
1600 if test -f "$LTLIBICONV"; then
1601 LIBICONV_DEP=$LTLIBICONV
1603 AC_SUBST(LIBICONV_DEP)
1609 # We will need to find libiberty.h and ansidecl.h
1610 saved_CFLAGS="$CFLAGS"
1611 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1612 saved_CXXFLAGS="$CXXFLAGS"
1613 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1615 # gcc_AC_CHECK_DECLS doesn't support overloaded functions, so use the
1616 # normal autoconf function for these. But force definition of
1617 # HAVE_DECL_BASENAME like gcc_AC_CHECK_DECLS does, to suppress the bizarre
1618 # basename handling in libiberty.h.
1619 AC_CHECK_DECLS([basename(const char*), strstr(const char*,const char*)], , ,[
1620 #undef HAVE_DECL_BASENAME
1621 #define HAVE_DECL_BASENAME 1
1622 #include "ansidecl.h"
1623 #include "system.h"])
1625 gcc_AC_CHECK_DECLS(getenv atol atoll asprintf sbrk abort atof getcwd getwd \
1626 madvise stpcpy strnlen strsignal strverscmp \
1627 strtol strtoul strtoll strtoull setenv unsetenv \
1628 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1629 free getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1630 #include "ansidecl.h"
1631 #include "system.h"])
1633 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1634 #include "ansidecl.h"
1636 #ifdef HAVE_SYS_RESOURCE_H
1637 #include <sys/resource.h>
1641 gcc_AC_CHECK_DECLS(mallinfo mallinfo2, , ,[
1642 #include "ansidecl.h"
1644 #ifdef HAVE_MALLOC_H
1649 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1650 #include "ansidecl.h"
1652 #ifdef HAVE_SYS_RESOURCE_H
1653 #include <sys/resource.h>
1655 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1656 [Define to `long' if <sys/resource.h> doesn't define.])])
1658 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1659 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1660 # in collect2.cc, <fcntl.h> isn't visible, but the configure test below needs
1661 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1662 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1663 #include "ansidecl.h"
1672 gcc_AC_CHECK_DECLS(times, , ,[
1673 #include "ansidecl.h"
1675 #ifdef HAVE_SYS_TIMES_H
1676 #include <sys/times.h>
1680 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1681 #include "ansidecl.h"
1686 # More time-related stuff.
1687 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1688 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1689 #include "ansidecl.h"
1691 #ifdef HAVE_SYS_TIMES_H
1692 #include <sys/times.h>
1694 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1695 if test $ac_cv_struct_tms = yes; then
1696 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1697 [Define if <sys/times.h> defines struct tms.])
1700 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1701 # revisit after autoconf 2.50.
1702 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1703 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1704 #include "ansidecl.h"
1706 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1707 if test $gcc_cv_type_clock_t = yes; then
1708 AC_DEFINE(HAVE_CLOCK_T, 1,
1709 [Define if <time.h> defines clock_t.])
1712 # Check if F_SETLKW is supported by fcntl.
1713 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1714 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1715 #include <fcntl.h>]], [[
1721 return fcntl (1, F_SETLKW, &fl);]])],
1722 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1723 if test $ac_cv_f_setlkw = yes; then
1724 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1725 [Define if F_SETLKW supported by fcntl.])
1728 # Check if O_CLOEXEC is defined by fcntl
1729 AC_CACHE_CHECK(for O_CLOEXEC, ac_cv_o_cloexec, [
1730 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1731 #include <fcntl.h>]], [[
1732 return open ("/dev/null", O_RDONLY | O_CLOEXEC);]])],
1733 [ac_cv_o_cloexec=yes],[ac_cv_o_cloexec=no])])
1734 if test $ac_cv_o_cloexec = yes; then
1735 AC_DEFINE(HOST_HAS_O_CLOEXEC, 1,
1736 [Define if O_CLOEXEC supported by fcntl.])
1739 # Check if O_NONBLOCK is defined by fcntl
1740 AC_CHECK_HEADERS([fcntl.h])
1741 AC_CHECK_DECL(O_NONBLOCK,,,[#include <fcntl.h>])
1742 if test $ac_cv_have_decl_O_NONBLOCK = yes; then
1743 AC_DEFINE(HOST_HAS_O_NONBLOCK, 1,
1744 [Define if O_NONBLOCK supported by fcntl.])
1748 # C++ Modules would like some networking features to provide the mapping
1749 # server. You can still use modules without them though.
1750 # The following network-related checks could probably do with some
1751 # Windows and other non-linux defenses and checking.
1753 # Local socket connectivity wants AF_UNIX networking
1754 # Check for AF_UNIX networking
1755 AC_CACHE_CHECK(for AF_UNIX, ac_cv_af_unix, [
1756 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1757 #include <sys/types.h>
1758 #include <sys/socket.h>
1760 #include <netinet/in.h>]],[[
1762 un.sun_family = AF_UNSPEC;
1763 int fd = socket (AF_UNIX, SOCK_STREAM, 0);
1764 connect (fd, (sockaddr *)&un, sizeof (un));]])],
1765 [ac_cv_af_unix=yes],
1766 [ac_cv_af_unix=no])])
1767 if test $ac_cv_af_unix = yes; then
1768 AC_DEFINE(HAVE_AF_UNIX, 1,
1769 [Define if AF_UNIX supported.])
1772 # Remote socket connectivity wants AF_INET6 networking
1773 # Check for AF_INET6 networking
1774 AC_CACHE_CHECK(for AF_INET6, ac_cv_af_inet6, [
1775 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1776 #include <sys/types.h>
1777 #include <sys/socket.h>
1778 #include <netinet/in.h>
1779 #include <netdb.h>]],[[
1781 in6.sin6_family = AF_UNSPEC;
1782 struct addrinfo *addrs = 0;
1783 struct addrinfo hints;
1785 hints.ai_family = AF_INET6;
1786 hints.ai_socktype = SOCK_STREAM;
1787 hints.ai_protocol = 0;
1788 hints.ai_canonname = 0;
1791 int e = getaddrinfo ("localhost", 0, &hints, &addrs);
1792 const char *str = gai_strerror (e);
1793 freeaddrinfo (addrs);
1794 int fd = socket (AF_INET6, SOCK_STREAM, 0);
1795 connect (fd, (sockaddr *)&in6, sizeof (in6));]])],
1796 [ac_cv_af_inet6=yes],
1797 [ac_cv_af_inet6=no])])
1798 if test $ac_cv_af_inet6 = yes; then
1799 AC_DEFINE(HAVE_AF_INET6, 1,
1800 [Define if AF_INET6 supported.])
1803 # Check if _LK_LOCK is supported by _locking
1804 AC_CACHE_CHECK(for _LK_LOCK, ac_cv_lk_lock, [
1805 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1807 #include <sys/locking.h>]], [[
1809 return _locking (fd, _LK_LOCK, 0);]])],
1810 [ac_cv_lk_lock=yes],[ac_cv_lk_lock=no])])
1811 if test $ac_cv_lk_lock = yes; then
1812 AC_DEFINE(HOST_HAS_LK_LOCK, 1,
1813 [Define if _LK_LOC supported by _locking.])
1816 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1817 CFLAGS="$saved_CFLAGS"
1818 CXXFLAGS="$saved_CXXFLAGS"
1820 # mkdir takes a single argument on some systems.
1821 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1829 # With Setjmp/Longjmp based exception handling.
1830 AC_ARG_ENABLE(sjlj-exceptions,
1831 [AS_HELP_STRING([--enable-sjlj-exceptions],
1832 [arrange to use setjmp/longjmp exception handling])],
1833 [force_sjlj_exceptions=yes],
1836 force_sjlj_exceptions=yes
1840 force_sjlj_exceptions=no
1843 if test $force_sjlj_exceptions = yes; then
1844 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1845 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1846 [Define 0/1 to force the choice for exception handling model.])
1849 # --------------------------------------------------------
1850 # Build, host, and target specific configuration fragments
1851 # --------------------------------------------------------
1853 # Collect build-machine-specific information.
1854 . ${srcdir}/config.build || exit 1
1856 # Collect host-machine-specific information.
1857 . ${srcdir}/config.host || exit 1
1861 # Collect target-machine-specific information.
1862 . ${srcdir}/config.gcc || exit 1
1864 extra_objs="${host_extra_objs} ${extra_objs}"
1865 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1867 # Default the target-machine variables that were not explicitly set.
1868 if test x"$tm_file" = x
1869 then tm_file=$cpu_type/$cpu_type.h; fi
1871 if test x"$extra_headers" = x
1872 then extra_headers=; fi
1874 if test x$md_file = x
1875 then md_file=$cpu_type/$cpu_type.md; fi
1877 if test x$out_file = x
1878 then out_file=$cpu_type/$cpu_type.cc; fi
1880 if test x"$tmake_file" = x
1881 then tmake_file=$cpu_type/t-$cpu_type
1884 # Support --enable-initfini-array.
1885 if test x$enable_initfini_array != xno; then
1886 tm_file="${tm_file} initfini-array.h"
1889 if test x"$dwarf2" = xyes
1890 then tm_file="$tm_file tm-dwarf2.h"
1893 # Say what files are being used for the output code and MD file.
1894 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1895 echo "Using \`$srcdir/config/$md_file' as machine description file."
1897 # If any of the xm_file variables contain nonexistent files, warn
1898 # about them and drop them.
1901 for x in $build_xm_file; do
1902 if test -f $srcdir/config/$x
1904 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1910 for x in $host_xm_file; do
1911 if test -f $srcdir/config/$x
1913 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1919 for x in $xm_file; do
1920 if test -f $srcdir/config/$x
1922 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1928 for f in $tm_file; do
1931 if test $count = ax; then
1932 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1934 echo "Using the following target machine macro files:"
1935 for f in $tm_file; do
1936 echo " $srcdir/config/$f"
1940 if test x$use_long_long_for_widest_fast_int = xyes; then
1941 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1942 [Define to 1 if the 'long long' type is wider than 'long' but still
1943 efficiently supported by the host hardware.])
1946 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1947 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1949 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1950 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1953 for f in $host_xm_file; do
1956 if test $count = a; then
1958 elif test $count = ax; then
1959 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1961 echo "Using the following host machine macro files:"
1962 for f in $host_xm_file; do
1963 echo " $srcdir/config/$f"
1966 echo "Using ${out_host_hook_obj} for host machine hooks."
1968 if test "$host_xm_file" != "$build_xm_file"; then
1970 for f in $build_xm_file; do
1973 if test $count = a; then
1975 elif test $count = ax; then
1976 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1978 echo "Using the following build machine macro files:"
1979 for f in $build_xm_file; do
1980 echo " $srcdir/config/$f"
1985 if test -n "$configured_native_system_header_dir"; then
1986 native_system_header_dir=$configured_native_system_header_dir
1988 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1989 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1993 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1994 gcc_cv_mcontext_underscores,
1995 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
1996 #include <sys/cdefs.h>
1997 #include <sys/signal.h>
1998 #include <ucontext.h>
1999 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
2001 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
2002 if test $gcc_cv_mcontext_underscores = yes; then
2003 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
2004 [mcontext_t fields start with __])
2013 # Check if a valid thread package
2014 case ${enable_threads} in
2017 target_thread_file='single'
2021 target_thread_file='single'
2023 aix | dce | lynx | mipssde | posix | rtems | \
2024 single | tpf | vxworks | win32 | mcf)
2025 target_thread_file=${enable_threads}
2028 echo "${enable_threads} is an unknown thread package" 1>&2
2033 if test x${thread_file} = x; then
2034 # No thread file set by target-specific clauses in config.gcc,
2035 # so use file chosen by default logic above
2036 thread_file=${target_thread_file}
2044 if test x$enable___cxa_atexit = xyes || \
2045 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
2046 if test x$host = x$target; then
2048 # mingw32 doesn't have __cxa_atexit but uses atexit registration
2049 # keyed to flag_use_cxa_atexit
2057 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
2058 [echo "__cxa_atexit can't be enabled on this target"])
2062 # We can't check for __cxa_atexit when building a cross, so assume
2066 if test x$use_cxa_atexit = xyes; then
2067 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
2068 [Define if you want to use __cxa_atexit, rather than atexit, to
2069 register C++ destructors for local statics and global objects.
2070 This is essential for fully standards-compliant handling of
2071 destructors, but requires __cxa_atexit in libc.])
2075 # Look for a file containing extra machine modes.
2076 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
2077 extra_modes_file='$(srcdir)'/config/${extra_modes}
2078 AC_SUBST(extra_modes_file)
2079 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
2080 [Define to the name of a file containing a list of extra machine modes
2081 for this architecture.])
2084 # Convert extra_options into a form suitable for Makefile use.
2087 for f in $extra_options; do
2088 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
2089 all_opt_files="$all_opt_files $srcdir/config/$f"
2091 AC_SUBST(extra_opt_files)
2093 # auto-host.h is the file containing items generated by autoconf and is
2094 # the first file included by config.h.
2095 # If host=build, it is correct to have bconfig include auto-host.h
2096 # as well. If host!=build, we are in error and need to do more
2097 # work to find out the build config parameters.
2098 if test x$host = x$build
2100 build_auto=auto-host.h
2101 HAVE_AUTO_BUILD='# '
2103 # We create a subdir, then run autoconf in the subdir.
2104 # To prevent recursion we set host and build for the new
2105 # invocation of configure to the build for this invocation
2112 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
2113 *) realsrcdir=../${srcdir};;
2115 # Clearing GMPINC is necessary to prevent host headers being
2116 # used by the build compiler. Defining GENERATOR_FILE stops
2117 # system.h from including gmp.h.
2118 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
2119 CXX="${CXX_FOR_BUILD}" CXXFLAGS="${CXXFLAGS_FOR_BUILD}" \
2120 LD="${LD_FOR_BUILD}" LDFLAGS="${LDFLAGS_FOR_BUILD}" \
2121 GMPINC="" CPPFLAGS="${CPPFLAGS_FOR_BUILD} -DGENERATOR_FILE" \
2122 ${realsrcdir}/configure \
2123 --enable-languages=${enable_languages-all} \
2124 ${enable_obsolete+--enable-obsolete="$enable_obsolete"} \
2125 ${enable_option_checking+--enable-option-checking="$enable_option_checking"} \
2126 --target=$target_alias --host=$build_alias \
2127 --build=$build_alias || exit # retaining $tempdir
2129 # We just finished tests for the build machine, so rename
2130 # the file auto-build.h in the gcc directory.
2131 mv auto-host.h ../auto-build.h
2134 build_auto=auto-build.h
2137 AC_SUBST(build_subdir)
2138 AC_SUBST(HAVE_AUTO_BUILD)
2140 tm_file="${tm_file} defaults.h"
2141 tm_p_file="${tm_p_file} tm-preds.h"
2142 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
2143 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
2144 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
2145 # put this back in temporarily.
2146 xm_file="auto-host.h ansidecl.h ${xm_file}"
2153 # Compile in configure arguments.
2154 if test -f configargs.h ; then
2155 # Being re-configured.
2156 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
2157 gcc_reconf_arguments=`echo "$gcc_config_arguments" | sed -e 's/^.*\( : (reconfigured) .*$\)/\1/'`
2158 if [ "$gcc_reconf_arguments" != " : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS" ]; then
2159 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
2162 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
2165 # Double all backslashes and backslash all quotes to turn
2166 # gcc_config_arguments into a C string.
2167 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
2168 $gcc_config_arguments
2170 gcc_config_arguments_str=`cat conftest.out`
2173 cat > configargs.h <<EOF
2174 /* Generated automatically. */
2175 static const char configuration_arguments[] = "$gcc_config_arguments_str";
2176 static const char thread_model[] = "$thread_file";
2178 static const struct {
2179 const char *name, *value;
2180 } configure_default_options[] = $configure_default_options;
2185 gcc_BASEVER=`cat $srcdir/BASE-VER`
2186 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
2187 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
2188 if test -f $srcdir/REVISION ; then
2189 gcc_REVISION=`cat $srcdir/REVISION`
2193 cat > plugin-version.h <<EOF
2194 #include "configargs.h"
2196 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
2197 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
2198 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
2199 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
2201 static char basever[] = "$gcc_BASEVER";
2202 static char datestamp[] = "$gcc_DATESTAMP";
2203 static char devphase[] = "$gcc_DEVPHASE";
2204 static char revision[] = "$gcc_REVISION";
2206 /* FIXME plugins: We should make the version information more precise.
2207 One way to do is to add a checksum. */
2209 static struct plugin_gcc_version gcc_version = {basever, datestamp,
2211 configuration_arguments};
2215 # Determine what GCC version number to use in filesystem paths.
2218 # Internationalization
2219 ZW_GNU_GETTEXT_SISTER_DIR
2221 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
2222 # -liconv on the link line twice.
2223 case "$LIBINTL" in *$LIBICONV*)
2227 AC_ARG_ENABLE(secureplt,
2228 [AS_HELP_STRING([--enable-secureplt],
2229 [enable -msecure-plt by default for PowerPC])],
2232 AC_ARG_ENABLE(mingw-wildcard,
2233 [AS_HELP_STRING([--enable-mingw-wildcard],
2234 [Set whether to expand wildcard on command-line.
2235 Default to platform configuration])],
2236 [],[enable_mingw_wildcard=platform])
2237 AS_IF([test x"$enable_mingw_wildcard" != xplatform ],
2238 [AC_DEFINE_UNQUOTED(MINGW_DOWILDCARD,
2239 $(test x"$enable_mingw_wildcard" = xno; echo $?),
2240 [Value to set mingw's _dowildcard to.])])
2242 AC_ARG_ENABLE(large-address-aware,
2243 [AS_HELP_STRING([--enable-large-address-aware],
2244 [Link mingw executables with --large-address-aware])])
2245 AS_IF([test x"$enable_large_address_aware" = xyes],
2246 [AC_DEFINE([MINGW_DEFAULT_LARGE_ADDR_AWARE], 1,
2247 [Define if we should link mingw executables with --large-address-aware])])
2249 AC_ARG_ENABLE(leading-mingw64-underscores,
2250 AS_HELP_STRING([--enable-leading-mingw64-underscores],
2251 [enable leading underscores on 64 bit mingw targets]),
2253 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
2254 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
2255 [Define if we should use leading underscore on 64 bit mingw targets])])
2258 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
2261 AC_ARG_ENABLE(frame-pointer,
2262 [AS_HELP_STRING([--enable-frame-pointer],
2263 [enable -fno-omit-frame-pointer by default for x86])], [],
2266 linux* | gnu* | darwin[[8912]]* | cygwin* | mingw*)
2267 # Enable -fomit-frame-pointer by default for these systems with DWARF2.
2268 enable_frame_pointer=no
2271 enable_frame_pointer=yes
2277 i[[34567]]86-*-* | x86_64-*-*)
2278 if test "x$enable_cld" = xyes; then
2279 tm_defines="${tm_defines} USE_IX86_CLD=1"
2281 if test "x$enable_frame_pointer" = xyes; then
2282 tm_defines="${tm_defines} USE_IX86_FRAME_POINTER=1"
2287 # Windows32 Registry support for specifying GCC installation paths.
2288 AC_ARG_ENABLE(win32-registry,
2289 [AS_HELP_STRING([--disable-win32-registry],
2290 [disable lookup of installation paths in the
2291 Registry on Windows hosts])
2292 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
2293 AS_HELP_STRING([--enable-win32-registry=KEY],
2294 [use KEY instead of GCC version as the last portion
2295 of the registry key])],,)
2298 win32 | pe | cygwin* | mingw32*)
2299 if test "x$enable_win32_registry" != xno; then
2300 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
2303 if test "x$enable_win32_registry" != xno; then
2304 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
2305 [Define to 1 if installation paths should be looked up in the Windows
2306 Registry. Ignored on non-Windows hosts.])
2308 if test "x$enable_win32_registry" != xyes \
2309 && test "x$enable_win32_registry" != x; then
2310 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
2311 [Define to be the last component of the Windows registry key under which
2312 to look for installation paths. The full key used will be
2313 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
2314 The default is the GCC version number.])
2320 # Get an absolute path to the GCC top-level source directory
2321 holddir=`${PWDCMD-pwd}`
2323 topdir=`${PWDCMD-pwd}`
2326 # Conditionalize the makefile for this host machine.
2328 for f in ${host_xmake_file}
2330 if test -f ${srcdir}/config/$f
2332 xmake_file="${xmake_file} \$(srcdir)/config/$f"
2336 # Conditionalize the makefile for this target machine.
2338 for f in ${tmake_file}
2340 if test -f ${srcdir}/config/$f
2342 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
2345 tmake_file="${tmake_file_}${omp_device_property_tmake_file}"
2347 out_object_file=`basename $out_file .cc`.o
2348 common_out_object_file=`basename $common_out_file .cc`.o
2350 tm_file_list="options.h"
2351 tm_include_list="options.h insn-constants.h"
2352 for f in $tm_file; do
2355 f=`echo $f | sed 's/^..//'`
2356 tm_file_list="${tm_file_list} $f"
2357 tm_include_list="${tm_include_list} $f"
2360 tm_file_list="${tm_file_list} \$(srcdir)/$f"
2361 tm_include_list="${tm_include_list} $f"
2364 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
2365 tm_include_list="${tm_include_list} config/$f"
2372 for f in $tm_p_file; do
2375 tm_p_file_list="${tm_p_file_list} $f"
2376 tm_p_include_list="${tm_p_include_list} $f"
2379 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
2380 tm_p_include_list="${tm_p_include_list} config/$f"
2386 for f in $tm_d_file; do
2389 tm_d_file_list="${tm_d_file_list} \$(srcdir)/config/$f"
2390 tm_d_include_list="${tm_d_include_list} config/$f"
2397 for f in $xm_file; do
2400 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
2401 xm_include_list="${xm_include_list} $f"
2404 xm_file_list="${xm_file_list} $f"
2405 xm_include_list="${xm_include_list} $f"
2408 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
2409 xm_include_list="${xm_include_list} config/$f"
2415 host_xm_include_list=
2416 for f in $host_xm_file; do
2419 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
2420 host_xm_include_list="${host_xm_include_list} $f"
2423 host_xm_file_list="${host_xm_file_list} $f"
2424 host_xm_include_list="${host_xm_include_list} $f"
2427 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
2428 host_xm_include_list="${host_xm_include_list} config/$f"
2434 for f in $build_xm_file; do
2437 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
2438 build_xm_include_list="${build_xm_include_list} $f"
2440 auto-build.h | auto-host.h )
2441 build_xm_file_list="${build_xm_file_list} $f"
2442 build_xm_include_list="${build_xm_include_list} $f"
2445 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
2446 build_xm_include_list="${build_xm_include_list} config/$f"
2451 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
2452 # cross-compiler which does not use the native headers and libraries.
2453 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
2454 CROSS= AC_SUBST(CROSS)
2455 ALL=all.internal AC_SUBST(ALL)
2456 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
2457 BUILD_SYSTEM_HEADER_DIR=$SYSTEM_HEADER_DIR AC_SUBST(BUILD_SYSTEM_HEADER_DIR)
2459 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x ||
2460 test x$build != x$host || test "x$with_build_sysroot" != x; then
2461 if test "x$with_build_sysroot" != x; then
2462 BUILD_SYSTEM_HEADER_DIR=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
2464 BUILD_SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2467 if test x$host != x$target
2469 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
2471 SYSTEM_HEADER_DIR=$BUILD_SYSTEM_HEADER_DIR
2472 elif test "x$TARGET_SYSTEM_ROOT" != x; then
2473 SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2476 if test "x$with_build_sysroot" != "x"; then
2477 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
2478 elif test "x$with_sysroot" = x; then
2479 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
2480 elif test "x$with_sysroot" = xyes; then
2481 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
2483 target_header_dir="${with_sysroot}${native_system_header_dir}"
2486 target_header_dir=${native_system_header_dir}
2489 # If this is a cross-compiler that does not
2490 # have its own set of headers then define
2493 # If this is using newlib, without having the headers available now,
2494 # then define inhibit_libc in LIBGCC2_CFLAGS.
2495 # This prevents libgcc2 from containing any code which requires libc
2497 : ${inhibit_libc=false}
2498 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
2499 test x$with_newlib = xyes ; } &&
2500 { test "x$with_headers" = xno || test ! -f "$target_header_dir/stdio.h"; } ; then
2503 AC_SUBST(inhibit_libc)
2505 # When building gcc with a cross-compiler, we need to adjust things so
2506 # that the generator programs are still built with the native compiler.
2507 # Also, we cannot run fixincludes.
2509 # These are the normal (build=host) settings:
2510 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
2511 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
2512 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
2513 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
2514 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
2515 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
2517 # And these apply if build != host, or we are generating coverage data
2518 if test x$build != x$host || test "x$coverage_flags" != x
2520 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS-$@) $(CFLAGS_FOR_BUILD)'
2521 BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS-$@) $(CXXFLAGS_FOR_BUILD)'
2522 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
2526 if test x$enable_fixincludes = xno;
2531 # Expand extra_headers to include complete path.
2532 # This substitutes for lots of t-* files.
2534 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
2535 for file in ${extra_headers} ; do
2536 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
2539 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
2540 if test x"$use_gcc_tgmath" = xyes
2541 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
2544 # Define collect2 in Makefile.
2545 case $host_can_use_collect2 in
2547 *) collect2='collect2$(exeext)' ;;
2549 AC_SUBST([collect2])
2551 # Add a definition of USE_COLLECT2 if system wants one.
2552 case $use_collect2 in
2553 no) use_collect2= ;;
2556 host_xm_defines="${host_xm_defines} USE_COLLECT2"
2557 xm_defines="${xm_defines} USE_COLLECT2"
2558 case $host_can_use_collect2 in
2560 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
2566 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
2567 [Define to the name of the LTO plugin DSO that must be
2568 passed to the linker's -plugin=LIB option.])
2570 # ---------------------------
2571 # Assembler & linker features
2572 # ---------------------------
2574 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
2575 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
2576 # However when ld-new is first executed from the build tree, libtool will
2577 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
2578 # to the build tree. While doing this we need to use the previous-stage
2579 # linker, or we have an infinite loop. The presence of a shell script as
2580 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
2581 # the gcc/collect-ld script. So we need to know how libtool works, or
2582 # exec-tool will fail.
2584 m4_defun([_LT_CONFIG_COMMANDS], [])
2587 AC_SUBST(enable_fast_install)
2589 # Identify the assembler which will work hand-in-glove with the newly
2590 # built GCC, so that we can examine its features. This is the assembler
2591 # which will be driven by the driver program.
2593 # If build != host, and we aren't building gas in-tree, we identify a
2594 # build->target assembler and hope that it will have the same features
2595 # as the host->target assembler we'll be using.
2596 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
2598 m4_pattern_allow([AS_FOR_TARGET])dnl
2599 AS_VAR_SET_IF(gcc_cv_as,, [
2600 if test -x "$DEFAULT_ASSEMBLER"; then
2601 gcc_cv_as="$DEFAULT_ASSEMBLER"
2602 elif test -f $gcc_cv_as_gas_srcdir/configure.ac \
2603 && test -f ../gas/Makefile \
2604 && test x$build = x$host; then
2605 gcc_cv_as=../gas/as-new$build_exeext
2606 elif test -x as$build_exeext; then
2607 # Build using assembler in the current directory.
2608 gcc_cv_as=./as$build_exeext
2609 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
2610 gcc_cv_as="$AS_FOR_TARGET"
2612 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
2615 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
2616 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
2617 case "$ORIGINAL_AS_FOR_TARGET" in
2618 ./as | ./as$build_exeext) ;;
2619 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2624 [[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]],
2625 [case "${enableval}" in
2631 install_gold_as_default=no
2633 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
2634 [case "${enableval}" in
2636 install_gold_as_default=yes
2639 if test x${default_ld} != x; then
2640 install_gold_as_default=yes
2646 AC_MSG_ERROR([invalid --enable-gold argument])
2650 # Identify the linker which will work hand-in-glove with the newly
2651 # built GCC, so that we can examine its features. This is the linker
2652 # which will be driven by the driver program.
2654 # If build != host, and we aren't building gas in-tree, we identify a
2655 # build->target linker and hope that it will have the same features
2656 # as the host->target linker we'll be using.
2657 gcc_cv_gld_major_version=
2658 gcc_cv_gld_minor_version=
2659 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2660 gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold
2661 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2663 AS_VAR_SET_IF(gcc_cv_ld,, [
2664 if test -x "$DEFAULT_LINKER"; then
2665 gcc_cv_ld="$DEFAULT_LINKER"
2666 elif test $install_gold_as_default = yes \
2667 && test -f $gcc_cv_ld_gold_srcdir/configure.ac \
2668 && test -f ../gold/Makefile \
2669 && test x$build = x$host; then
2670 gcc_cv_ld=../gold/ld-new$build_exeext
2671 elif test -f $gcc_cv_ld_gld_srcdir/configure.ac \
2672 && test -f ../ld/Makefile \
2673 && test x$build = x$host; then
2674 gcc_cv_ld=../ld/ld-new$build_exeext
2675 elif test -x collect-ld$build_exeext; then
2676 # Build using linker in the current directory.
2677 gcc_cv_ld=./collect-ld$build_exeext
2678 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2679 gcc_cv_ld="$LD_FOR_TARGET"
2681 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2684 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2685 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2686 # if the PLUGIN_LD is set ld-new, just have it as ld
2687 # as that is the installed named.
2688 if test x$PLUGIN_LD_SUFFIX = xld-new \
2689 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2692 AC_ARG_WITH(plugin-ld,
2693 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2694 [if test x"$withval" != x; then
2695 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2696 PLUGIN_LD_SUFFIX="$withval"
2698 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2699 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2701 # Check to see if we are using gold instead of ld
2702 AC_MSG_CHECKING(whether we are using gold)
2704 if test x$gcc_cv_ld != x; then
2705 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2706 | grep "GNU gold" > /dev/null; then
2710 AC_MSG_RESULT($ld_is_gold)
2712 # Check to see if we are using mold instead of ld
2713 AC_MSG_CHECKING(whether we are using mold)
2715 if test x$gcc_cv_ld != x; then
2716 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2717 | grep "mold" > /dev/null; then
2721 AC_MSG_RESULT($ld_is_mold)
2724 AC_MSG_CHECKING(gold linker with split stack support as non default)
2725 # Check to see if default ld is not gold, but gold is
2726 # available and has support for split stack. If gcc was configured
2727 # with gold then no checking is done.
2729 if test x$ld_is_gold = xno && which ${gcc_cv_ld}.gold >/dev/null 2>&1; then
2731 # For platforms other than powerpc64*, enable as appropriate.
2734 ld_gold=`which ${gcc_cv_ld}.gold`
2735 # Make sure this gold has minimal split stack support
2736 if $ld_gold --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then
2737 ld_vers=`$ld_gold --version | sed 1q`
2738 gold_vers=`echo $ld_vers | sed -n \
2739 -e 's,^[[^)]]*[[ ]]\([[0-9]][[0-9]]*\.[[0-9]][[0-9]]*[[^)]]*\)) .*$,\1,p'`
2741 # check that the gold version contains the complete split stack support
2742 # on powerpc64 big and little endian
2744 case "$gold_vers" in
2745 2.25.[[1-9]]*|2.2[[6-9]][[.0-9]]*|2.[[3-9]][[.0-9]]*|[[3-9]].[[.0-9]]*) gold_non_default=yes
2747 *) gold_non_default=no
2753 if test $gold_non_default = yes; then
2754 AC_DEFINE(HAVE_GOLD_NON_DEFAULT_SPLIT_STACK, 1,
2755 [Define if the gold linker supports split stack and is available as a non-default])
2758 AC_MSG_RESULT($gold_non_default)
2760 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2761 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2762 case "$ORIGINAL_LD_FOR_TARGET" in
2763 ./collect-ld | ./collect-ld$build_exeext) ;;
2764 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2767 AC_MSG_CHECKING(what linker to use)
2768 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2769 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2770 # Single tree build which includes ld. We want to prefer it
2771 # over whatever linker top-level may have detected, since
2772 # we'll use what we're building after installation anyway.
2773 AC_MSG_RESULT(newly built ld)
2775 in_tree_ld_is_elf=no
2776 if (grep 'EMUL = .*elf' ../ld/Makefile \
2777 || grep 'EMUL = .*linux' ../ld/Makefile \
2778 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2779 in_tree_ld_is_elf=yes
2780 elif test "$ld_is_gold" = yes; then
2781 in_tree_ld_is_elf=yes
2783 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
2786 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2787 if test x$gcc_cv_gld_version != x; then
2791 case $gcc_cv_gld_version in
2794 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2797 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2798 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2800 ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext
2801 ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext
2803 AC_MSG_RESULT($gcc_cv_ld)
2805 gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext`
2806 ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext
2807 ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext
2810 AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET)
2811 AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET)
2813 # Figure out what nm we will be using.
2814 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2815 AS_VAR_SET_IF(gcc_cv_nm,, [
2816 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2817 && test -f ../binutils/Makefile \
2818 && test x$build = x$host; then
2819 gcc_cv_nm=../binutils/nm-new$build_exeext
2820 elif test -x nm$build_exeext; then
2821 gcc_cv_nm=./nm$build_exeext
2822 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2823 gcc_cv_nm="$NM_FOR_TARGET"
2825 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2828 AC_MSG_CHECKING(what nm to use)
2829 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2830 # Single tree build which includes binutils.
2831 AC_MSG_RESULT(newly built nm)
2834 AC_MSG_RESULT($gcc_cv_nm)
2838 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2839 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2840 case "$ORIGINAL_NM_FOR_TARGET" in
2841 ./nm | ./nm$build_exeext) ;;
2842 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2846 # Figure out what objdump we will be using.
2847 AS_VAR_SET_IF(gcc_cv_objdump,, [
2848 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2849 && test -f ../binutils/Makefile \
2850 && test x$build = x$host; then
2851 # Single tree build which includes binutils.
2852 gcc_cv_objdump=../binutils/objdump$build_exeext
2853 elif test -x objdump$build_exeext; then
2854 gcc_cv_objdump=./objdump$build_exeext
2855 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2856 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2858 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2861 AC_MSG_CHECKING(what objdump to use)
2862 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2863 # Single tree build which includes binutils.
2864 AC_MSG_RESULT(newly built objdump)
2865 elif test x$gcc_cv_objdump = x; then
2866 AC_MSG_RESULT(not found)
2868 AC_MSG_RESULT($gcc_cv_objdump)
2871 # Figure out what readelf we will be using.
2872 AS_VAR_SET_IF(gcc_cv_readelf,, [
2873 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2874 && test -f ../binutils/Makefile \
2875 && test x$build = x$host; then
2876 # Single tree build which includes binutils.
2877 gcc_cv_readelf=../binutils/readelf$build_exeext
2878 elif test -x readelf$build_exeext; then
2879 gcc_cv_readelf=./readelf$build_exeext
2880 elif ( set dummy $READELF_FOR_TARGET; test -x $[2] ); then
2881 gcc_cv_readelf="$READELF_FOR_TARGET"
2883 AC_PATH_PROG(gcc_cv_readelf, $READELF_FOR_TARGET)
2886 AC_MSG_CHECKING(what readelf to use)
2887 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2888 # Single tree build which includes binutils.
2889 AC_MSG_RESULT(newly built readelf)
2890 elif test x$gcc_cv_readelf = x; then
2891 AC_MSG_RESULT(not found)
2893 AC_MSG_RESULT($gcc_cv_readelf)
2896 # Figure out what otool we will be using.
2897 AS_VAR_SET_IF(gcc_cv_otool,, [
2898 if test -x otool$build_exeext; then
2899 gcc_cv_otool=./otool$build_exeext
2900 elif ( set dummy $OTOOL_FOR_TARGET; test -x $[2] ); then
2901 gcc_cv_otool="$OTOOL_FOR_TARGET"
2903 AC_PATH_PROG(gcc_cv_otool, $OTOOL_FOR_TARGET)
2906 AC_MSG_CHECKING(what otool to use)
2907 if test x$gcc_cv_otool = x; then
2908 AC_MSG_RESULT(not found)
2910 AC_MSG_RESULT($gcc_cv_otool)
2913 # Figure out the dsymutil we will use.
2914 AS_VAR_SET_IF(gcc_cv_dsymutil,, [
2915 if test -x "$DEFAULT_DSYMUTIL"; then
2916 gcc_cv_dsymutil="$DEFAULT_DSYMUTIL"
2917 elif test -x dsymutil$build_exeext; then
2918 gcc_cv_dsymutil=./dsymutil$build_exeext
2919 elif ( set dummy $DSYMUTIL_FOR_TARGET; test -x $[2] ); then
2920 gcc_cv_dsymutil=$DSYMUTIL_FOR_TARGET
2921 elif ( set dummy $DSYMUTIL; test -x $[2] ); then
2922 gcc_cv_dsymutil=$DSYMUTIL
2924 AC_PATH_PROG(gcc_cv_dsymutil, $DSYMUTIL_FOR_TARGET)
2927 ORIGINAL_DSYMUTIL_FOR_TARGET=$gcc_cv_dsymutil
2928 AC_SUBST(ORIGINAL_DSYMUTIL_FOR_TARGET)
2929 case "$ORIGINAL_DSYMUTIL_FOR_TARGET" in
2930 ./dsymutil | ./dsymutil$build_exeext) ;;
2931 *) AC_CONFIG_FILES(dsymutil:exec-tool.in, [chmod +x dsymutil]) ;;
2934 # Figure out what assembler alignment features are present.
2935 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,,
2938 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2939 [Define if your assembler supports .balign and .p2align.])])
2941 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,,
2943 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2944 [Define if your assembler supports specifying the maximum number
2945 of bytes to skip when using the GAS .p2align command.])])
2947 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,,
2949 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2950 [Define if your assembler supports .literal16.])])
2952 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,,
2953 [conftest_label1: .word 0
2955 conftest_label2: .word 0
2957 [if test x$gcc_cv_nm != x; then
2958 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2959 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2960 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2962 else gcc_cv_as_subsection_m1=yes
2964 rm -f conftest.nm1 conftest.nm2
2966 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2967 [Define if your assembler supports .subsection and .subsection -1 starts
2968 emitting at the beginning of your section.])])
2970 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,,
2972 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2974 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,,
2975 [ .weakref foobar, barfnot],,
2976 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2978 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,,
2980 .NSUBSPA $CODE$,COMDAT],,
2981 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2983 # .hidden needs to be supported in both the assembler and the linker,
2984 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2985 # This is irritatingly difficult to feature test for; we have to check the
2986 # date string after the version number. If we've got an in-tree
2987 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2989 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2992 conftest_s=' .globl foobar,hidden'
2995 conftest_s=' .hidden foobar
2999 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,, [$conftest_s])
3002 # Darwin as has some visibility support, though with a different syntax.
3003 gcc_cv_as_hidden=yes
3007 # gnu_indirect_function type is an extension proposed at
3008 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
3009 # selection of function implementation
3010 AC_ARG_ENABLE(gnu-indirect-function,
3011 [AS_HELP_STRING([--enable-gnu-indirect-function],
3012 [enable the use of the @gnu_indirect_function to glibc systems])],
3013 [case $enable_gnu_indirect_function in
3015 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
3016 Valid choices are 'yes' and 'no'.]) ;;
3018 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
3022 AC_MSG_CHECKING(linker ifunc IRELATIVE support)
3023 cat > conftest.s <<EOF
3025 .type foo_resolver, @function
3028 .size foo_resolver, .-foo_resolver
3031 .type foo, %gnu_indirect_function
3032 .set foo, foo_resolver
3035 .type bar, @function
3041 if test x$gcc_cv_as != x \
3042 && test x$gcc_cv_ld != x \
3043 && test x$gcc_cv_readelf != x \
3044 && $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
3045 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1 \
3046 && $gcc_cv_readelf --relocs --wide conftest \
3047 | grep R_RISCV_IRELATIVE > /dev/null 2>&1; then
3048 enable_gnu_indirect_function=yes
3050 rm -f conftest conftest.o conftest.s
3051 AC_MSG_RESULT($enable_gnu_indirect_function)
3055 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
3056 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
3057 [Define if your system supports gnu indirect functions.])
3061 if test $in_tree_ld != yes ; then
3062 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
3063 if echo "$ld_ver" | grep GNU > /dev/null; then
3064 if test x"$ld_is_gold" = xyes; then
3065 # GNU gold --version looks like this:
3067 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
3069 # We extract the binutils version which is more familiar and specific
3070 # than the gold version.
3071 ld_vers=`echo $ld_ver | sed -n \
3072 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3074 # GNU ld --version looks like this:
3076 # GNU ld (GNU Binutils) 2.21.51.20110225
3077 ld_vers=`echo $ld_ver | sed -n \
3078 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3080 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)\(-*\)\([01][0-9]\)\2\([0-3][0-9]\).*$,\1\3\4,p'`
3081 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3082 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3083 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
3087 # Solaris 2 ld -V output looks like this for a regular version:
3089 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
3091 # but test versions add stuff at the end:
3093 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
3095 # ld and ld.so.1 are guaranteed to be updated in lockstep, so ld version
3096 # numbers can be used in ld.so.1 feature checks even if a different
3097 # linker is configured.
3098 ld_ver=`$gcc_cv_ld -V 2>&1`
3099 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
3100 ld_vers=`echo $ld_ver | sed -n \
3101 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
3102 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3103 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3111 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
3112 [[if test $in_tree_ld = yes ; then
3114 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
3115 && test $in_tree_ld_is_elf = yes; then
3116 gcc_cv_ld_hidden=yes
3119 gcc_cv_ld_hidden=yes
3120 if test x"$ld_is_gold" = xyes; then
3122 elif test x"$ld_is_mold" = xyes; then
3124 elif echo "$ld_ver" | grep GNU > /dev/null; then
3125 if test 0"$ld_date" -lt 20020404; then
3126 if test -n "$ld_date"; then
3127 # If there was date string, but was earlier than 2002-04-04, fail
3129 elif test -z "$ld_vers"; then
3130 # If there was no date string nor ld version number, something is wrong
3133 test -z "$ld_vers_patch" && ld_vers_patch=0
3134 if test "$ld_vers_major" -lt 2; then
3136 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
3137 gcc_cv_ld_hidden="no"
3138 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
3146 gcc_cv_ld_hidden=yes
3149 # Darwin ld has some visibility support.
3150 gcc_cv_ld_hidden=yes
3152 hppa64*-*-hpux* | ia64*-*-hpux*)
3153 gcc_cv_ld_hidden=yes
3156 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
3157 # .symbolic was only added in Solaris 9 12/02.
3158 gcc_cv_ld_hidden=yes
3166 libgcc_visibility=no
3167 AC_SUBST(libgcc_visibility)
3168 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
3169 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
3170 libgcc_visibility=yes
3171 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
3172 [Define if your assembler and linker support .hidden.])
3175 AC_MSG_CHECKING(linker read-only and read-write section mixing)
3176 gcc_cv_ld_ro_rw_mix=unknown
3177 if test $in_tree_ld = yes ; then
3178 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
3179 && test $in_tree_ld_is_elf = yes; then
3180 gcc_cv_ld_ro_rw_mix=read-write
3182 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3183 echo '.section myfoosect, "a"' > conftest1.s
3184 echo '.section myfoosect, "aw"' > conftest2.s
3185 echo '.byte 1' >> conftest2.s
3186 echo '.section myfoosect, "a"' > conftest3.s
3187 echo '.byte 0' >> conftest3.s
3188 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
3189 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
3190 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
3191 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
3192 conftest2.o conftest3.o > /dev/null 2>&1; then
3193 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
3194 | sed -e '/myfoosect/!d' -e N`
3195 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
3196 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
3197 gcc_cv_ld_ro_rw_mix=read-only
3199 gcc_cv_ld_ro_rw_mix=read-write
3204 rm -f conftest.* conftest[123].*
3207 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
3208 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
3209 [Define if your linker links a mix of read-only
3210 and read-write sections into a read-write section.])
3212 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
3214 gcc_AC_INITFINI_ARRAY
3216 # Check if we have .[us]leb128, and support symbol arithmetic with it.
3217 # Older versions of GAS and some non-GNU assemblers, have a bugs handling
3218 # these directives, even when they appear to accept them.
3219 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,,
3226 .uleb128 0x8000000000000000
3229 if test "x$gcc_cv_objdump" != x; then
3230 if $gcc_cv_objdump -s conftest.o 2>/dev/null \
3231 | grep '04800a8e 78808080 80808080 808001' >/dev/null; then
3232 gcc_cv_as_leb128=yes
3234 elif test "x$gcc_cv_otool" != x; then
3235 if $gcc_cv_otool -d conftest.o 2>/dev/null \
3236 | grep '04 80 0a 8e 78 80 80 80 80 80 80 80 80 80 01' >/dev/null; then
3237 gcc_cv_as_leb128=yes
3240 # play safe, assume the assembler is broken.
3244 [AC_DEFINE(HAVE_AS_LEB128, 1,
3245 [Define if your assembler supports .sleb128 and .uleb128.])],
3246 [AC_DEFINE(HAVE_AS_LEB128, 0,
3247 [Define if your assembler supports .sleb128 and .uleb128.])])
3249 # Determine if an .eh_frame section is read-only.
3250 gcc_fn_eh_frame_ro () {
3251 $gcc_cv_as $1 -o conftest.o conftest.s > /dev/null 2>&1 && \
3252 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
3253 sed -e '/.eh_frame/!d' -e N | grep READONLY > /dev/null
3256 # Check if we have assembler support for unwind directives.
3257 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,,
3263 .cfi_escape 1, 2, 3, 4, 5
3267 # If the linker used on Solaris (like Sun ld) isn't capable of merging
3268 # read-only and read-write sections, we need to make sure that the
3269 # assembler used emits read-write .eh_frame sections.
3270 if test "x$gcc_cv_ld_ro_rw_mix" = xread-write; then
3271 gcc_cv_as_cfi_directive=yes
3272 elif test "x$gcc_cv_objdump" = x; then
3273 # No objdump, err on the side of caution.
3274 gcc_cv_as_cfi_directive=no
3276 if test x$gas = xyes; then
3284 sparc*-*-solaris2.*)
3285 # On Solaris/SPARC, .eh_frame sections should always be read-write.
3286 if gcc_fn_eh_frame_ro $as_32_opt \
3287 || gcc_fn_eh_frame_ro $as_64_opt; then
3288 gcc_cv_as_cfi_directive=no
3290 gcc_cv_as_cfi_directive=yes
3293 i?86-*-solaris2.* | x86_64-*-solaris2.*)
3294 # On Solaris/x86, make sure that GCC and assembler agree on using
3295 # read-only .eh_frame sections for 64-bit.
3296 if gcc_fn_eh_frame_ro $as_32_opt; then
3297 gcc_cv_as_cfi_directive=no
3298 elif gcc_fn_eh_frame_ro $as_64_opt; then
3299 gcc_cv_as_cfi_directive=yes
3301 gcc_cv_as_cfi_directive=no
3308 gcc_cv_as_cfi_directive=yes
3311 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
3312 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,,
3315 .cfi_adjust_cfa_offset 64
3317 .cfi_adjust_cfa_offset 128
3320 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
3321 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
3322 gcc_cv_as_cfi_advance_working=yes
3326 # no objdump, err on the side of caution
3327 gcc_cv_as_cfi_advance_working=no
3329 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
3330 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
3331 [`if test $gcc_cv_as_cfi_directive = yes \
3332 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
3333 [Define 0/1 if your assembler supports CFI directives.])
3335 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
3336 gcc_GAS_CHECK_FEATURE([cfi personality directive],
3337 gcc_cv_as_cfi_personality_directive,,
3340 .cfi_personality 0, symbol
3342 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
3343 [`if test $gcc_cv_as_cfi_personality_directive = yes; then echo 1; else echo 0; fi`],
3344 [Define 0/1 if your assembler supports .cfi_personality.])
3346 gcc_GAS_CHECK_FEATURE([cfi sections directive],
3347 gcc_cv_as_cfi_sections_directive,,
3349 .cfi_sections .debug_frame, .eh_frame
3353 win32 | pe | cygwin* | mingw32*)
3354 # Need to check that we generated the correct relocation for the
3355 # .debug_frame section. This was fixed for binutils 2.21.
3356 gcc_cv_as_cfi_sections_directive=no
3357 if test "x$gcc_cv_objdump" != x; then
3358 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
3359 grep -i secrel > /dev/null; then
3360 gcc_cv_as_cfi_sections_directive=yes
3365 gcc_cv_as_cfi_sections_directive=yes
3368 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
3369 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
3370 [`if test $gcc_cv_as_cfi_sections_directive = yes; then echo 1; else echo 0; fi`],
3371 [Define 0/1 if your assembler supports .cfi_sections.])
3373 # GAS versions up to and including 2.11.0 may mis-optimize
3375 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,,
3382 .section .eh_frame,"aw",@progbits
3384 .4byte .LECIE1-.LSCIE1
3398 .4byte .LEFDE1-.LASFDE1
3400 .4byte .LASFDE1-__FRAME_BEGIN__
3408 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
3409 cat > conftest.lit <<EOF
3410 0000 10000000 00000000 017a0001 781a0004 .........z..x...
3411 0010 01000000 12000000 18000000 00000000 ................
3412 0020 08000000 04080000 0044 .........D @&t@
3414 cat > conftest.big <<EOF
3415 0000 00000010 00000000 017a0001 781a0004 .........z..x...
3416 0010 00000001 00000012 00000018 00000000 ................
3417 0020 00000008 04000000 0844 .........D @&t@
3419 # If the assembler didn't choke, and we can objdump,
3420 # and we got the correct data, then succeed.
3421 # The text in the here-document typically retains its unix-style line
3422 # endings, while the output of objdump will use host line endings.
3423 # Therefore, use diff -b for the comparisons.
3424 if test x$gcc_cv_objdump != x \
3425 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
3426 | tail -3 > conftest.got \
3427 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
3428 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
3430 gcc_cv_as_eh_frame=yes
3431 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
3432 gcc_cv_as_eh_frame=buggy
3434 # Uh oh, what do we do now?
3435 gcc_cv_as_eh_frame=no
3438 if test $gcc_cv_as_eh_frame = buggy; then
3439 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
3440 [Define if your assembler mis-optimizes .eh_frame data.])
3443 # Test if the assembler supports the section flag 'e' or #exclude for
3444 # specifying an excluded section.
3445 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_e,
3449 if test $gcc_cv_as_section_exclude_e = no; then
3451 # Solaris as uses #exclude instead.
3455 conftest_s='.section "foo1", #exclude'
3457 i?86-*-solaris2* | x86_64-*-solaris2*)
3458 conftest_s='.section foo1, #exclude'
3463 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_hash,,
3467 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3468 [`if test $gcc_cv_as_section_exclude_e = yes || test $gcc_cv_as_section_exclude_hash = yes; then echo 1; else echo 0; fi`],
3469 [Define if your assembler supports specifying the exclude section flag.])
3471 # Test if the assembler supports the section flag 'R' for specifying
3472 # section with SHF_GNU_RETAIN.
3474 # Solaris may use GNU assembler with Solairs ld. Even if GNU
3475 # assembler supports the section flag 'R', it doesn't mean that
3476 # Solairs ld supports it.
3478 gcc_cv_as_shf_gnu_retain=no
3481 gcc_GAS_CHECK_FEATURE([section 'R' flag], gcc_cv_as_shf_gnu_retain,
3483 [.section .foo,"awR",%progbits
3487 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_GNU_RETAIN,
3488 [`if test $gcc_cv_as_shf_gnu_retain = yes; then echo 1; else echo 0; fi`],
3489 [Define 0/1 if your assembler supports marking sections with SHF_GNU_RETAIN flag.])
3491 # Test if the assembler supports the section flag 'o' for specifying
3492 # section with link-order.
3494 # Solaris may use GNU assembler with Solairs ld. Even if GNU
3495 # assembler supports the section flag 'o', it doesn't mean that
3496 # Solairs ld supports it.
3498 gcc_cv_as_section_link_order=no
3501 gcc_GAS_CHECK_FEATURE([section 'o' flag], gcc_cv_as_section_link_order,
3505 .section __patchable_function_entries,"awo",%progbits,.foo
3509 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_LINK_ORDER,
3510 [`if test $gcc_cv_as_section_link_order = yes; then echo 1; else echo 0; fi`],
3511 [Define 0/1 if your assembler supports 'o' flag in .section directive.])
3513 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
3515 [.section .rodata.str, "aMS", @progbits, 1])
3516 if test $gcc_cv_as_shf_merge = no; then
3517 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
3519 [.section .rodata.str, "aMS", %progbits, 1])
3521 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
3522 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
3523 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
3525 gcc_cv_ld_aligned_shf_merge=yes
3527 # SHF_MERGE support is broken in Solaris ld up to Solaris 11.3/SPARC for
3529 sparc*-*-solaris2.11*)
3530 if test x"$gnu_ld" = xno \
3531 && test "$ld_vers_major" -lt 2 && test "$ld_vers_minor" -lt 3159; then
3532 gcc_cv_ld_aligned_shf_merge=no
3536 AC_DEFINE_UNQUOTED(HAVE_LD_ALIGNED_SHF_MERGE,
3537 [`if test $gcc_cv_ld_aligned_shf_merge = yes; then echo 1; else echo 0; fi`],
3538 [Define 0/1 if your linker supports the SHF_MERGE flag with section alignment > 1.])
3540 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
3541 gcc_cv_as_comdat_group,
3543 [.section .text,"axG",@progbits,.foo,comdat])
3544 if test $gcc_cv_as_comdat_group = yes; then
3545 gcc_cv_as_comdat_group_percent=no
3546 gcc_cv_as_comdat_group_group=no
3548 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
3549 gcc_cv_as_comdat_group_percent,
3551 [.section .text,"axG",%progbits,.foo,comdat])
3552 if test $gcc_cv_as_comdat_group_percent = yes; then
3553 gcc_cv_as_comdat_group_group=no
3556 # Sun as uses a completely different syntax.
3561 .group foo,".text%foo",#comdat
3562 .section ".text%foo", #alloc,#execinstr,#progbits
3567 i?86-*-solaris2* | x86_64-*-solaris2*)
3569 .group foo,.text%foo,#comdat
3570 .section .text%foo, "ax", @progbits
3576 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
3577 gcc_cv_as_comdat_group_group,
3581 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
3582 gcc_cv_as_comdat_group_group=no
3586 if test x"$ld_is_gold" = xyes; then
3588 elif test x"$ld_is_mold" = xyes; then
3590 elif test $in_tree_ld = yes ; then
3592 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3593 && test $in_tree_ld_is_elf = yes; then
3596 elif echo "$ld_ver" | grep GNU > /dev/null; then
3598 if test 0"$ld_date" -lt 20050308; then
3599 if test -n "$ld_date"; then
3600 # If there was date string, but was earlier than 2005-03-08, fail
3602 elif test "$ld_vers_major" -lt 2; then
3604 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
3611 *-*-solaris2.1[1-9]*)
3613 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
3614 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
3617 # If using Sun as for COMDAT group as emitted by GCC, one needs at
3618 # least ld version 1.2267.
3619 if test "$ld_vers_major" -gt 1; then
3621 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
3623 elif test "$ld_vers_minor" -ge 2267; then
3628 # Assume linkers other than GNU ld don't support COMDAT group.
3634 # Allow overriding the automatic COMDAT group tests above.
3635 AC_ARG_ENABLE(comdat,
3636 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
3637 [comdat_group="$enable_comdat"])
3638 if test $comdat_group = no; then
3639 gcc_cv_as_comdat_group=no
3640 gcc_cv_as_comdat_group_percent=no
3641 gcc_cv_as_comdat_group_group=no
3643 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
3644 [`if test $gcc_cv_as_comdat_group = yes \
3645 || test $gcc_cv_as_comdat_group_percent = yes \
3646 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
3647 [Define 0/1 if your assembler and linker support COMDAT groups.])
3649 # Restrict this test to Solaris/x86: other targets define this statically.
3651 i?86-*-solaris2* | x86_64-*-solaris2*)
3652 AC_MSG_CHECKING(support for hidden thunks in linkonce sections)
3653 if test $in_tree_ld = yes || echo "$ld_ver" | grep GNU > /dev/null; then
3657 # Full support for hidden thunks in linkonce sections only appeared in
3658 # Solaris 11/OpenSolaris.
3659 *-*-solaris2.1[[1-9]]*)
3667 AC_MSG_RESULT($hidden_linkonce)
3668 AC_DEFINE_UNQUOTED(USE_HIDDEN_LINKONCE,
3669 [`if test $hidden_linkonce = yes; then echo 1; else echo 0; fi`],
3670 [Define 0/1 if your linker supports hidden thunks in linkonce sections.])
3674 gcc_GAS_CHECK_FEATURE([line table is_stmt support],
3678 .loc 1 1 0 is_stmt 1],,
3679 [AC_DEFINE(HAVE_GAS_LOC_STMT, 1,
3680 [Define if your assembler supports the .loc is_stmt sub-directive.])])
3682 gcc_GAS_CHECK_FEATURE([line table discriminator support],
3683 gcc_cv_as_discriminator,,
3686 .loc 1 1 0 discriminator 1],,
3687 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
3688 [Define if your assembler supports the .loc discriminator sub-directive.])])
3690 # Catch the newlib flag of the same name so we can gate GCC features on it.
3691 AC_ARG_ENABLE(newlib-nano-formatted-io,
3692 [AS_HELP_STRING([--enable-newlib-nano-formatted-io], [Use nano version
3694 [case "${enableval}" in
3698 AC_MSG_ERROR([unknown newlib-nano-formatted-io setting $enableval])
3702 # Thread-local storage - the check is heavily parameterized.
3709 .section ".tdata","awT",@progbits
3712 ldq $27,__tls_get_addr($29) !literal!1
3713 lda $16,foo($29) !tlsgd!1
3714 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
3715 ldq $27,__tls_get_addr($29) !literal!2
3716 lda $16,foo($29) !tlsldm!2
3717 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
3718 ldq $1,foo($29) !gotdtprel
3719 ldah $2,foo($29) !dtprelhi
3720 lda $3,foo($2) !dtprello
3721 lda $4,foo($29) !dtprel
3722 ldq $1,foo($29) !gottprel
3723 ldah $2,foo($29) !tprelhi
3724 lda $3,foo($2) !tprello
3725 lda $4,foo($29) !tprel'
3726 tls_as_opt=--fatal-warnings
3730 add_s r0,r0, @foo@tpoff'
3732 cris-*-*|crisv32-*-*)
3734 .section ".tdata","awT",@progbits
3739 tls_as_opt=--fatal-warnings
3743 .section ".tdata","awT",@progbits
3753 .section ".tdata","awT",@progbits
3757 addil LT%foo-$tls_gdidx$,gp
3758 ldo RT%foo-$tls_gdidx$(%r1),%arg0
3761 addil LT%foo-$tls_ldidx$,gp
3763 ldo RT%foo-$tls_ldidx$(%r1),%arg0
3764 addil LR%foo-$tls_dtpoff$,%ret0
3765 ldo RR%foo-$tls_dtpoff$(%r1),%t1
3767 addil LT%foo-$tls_ieoff$,gp
3768 ldw RT%foo-$tls_ieoff$(%r1),%t2
3771 addil LR%foo-$tls_leoff$,%t1
3772 ldo RR%foo-$tls_leoff$(%r1),%t2'
3773 tls_as_opt=--fatal-warnings
3777 .section ".tdata","awT",%progbits
3786 i[34567]86-*-* | x86_64-*-*)
3788 i[34567]86-*-solaris2.* | x86_64-*-solaris2.*)
3795 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3797 .section .tdata,"awt",@progbits'
3800 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
3801 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
3805 .section ".tdata","awT",@progbits'
3807 tls_as_opt="--fatal-warnings"
3811 if test x$on_solaris = xyes; then
3813 yes) tls_as_opt="$tls_as_opt --32" ;;
3816 conftest_s="$conftest_s
3820 leal foo@tlsgd(,%ebx,1), %eax
3821 leal foo@tlsldm(%ebx), %eax
3822 leal foo@dtpoff(%eax), %edx
3823 movl foo@gottpoff(%ebx), %eax
3824 subl foo@gottpoff(%ebx), %eax
3825 addl foo@gotntpoff(%ebx), %eax
3826 movl foo@indntpoff, %eax
3827 movl \$foo@tpoff, %eax
3828 subl \$foo@tpoff, %eax
3829 leal foo@ntpoff(%ecx), %eax"
3832 if test x$on_solaris = xyes; then
3834 yes) tls_as_opt="$tls_as_opt --64" ;;
3835 no) tls_as_opt="$tls_as_opt -xarch=amd64" ;;
3838 conftest_s="$conftest_s
3842 leaq foo@tlsgd(%rip), %rdi
3843 leaq foo@tlsld(%rip), %rdi
3844 leaq foo@dtpoff(%rax), %rdx
3845 movq foo@gottpoff(%rip), %rax
3846 movq \$foo@tpoff, %rax"
3852 .section ".tdata","awT",@progbits
3855 addl r16 = @ltoff(@dtpmod(foo#)), gp
3856 addl r17 = @ltoff(@dtprel(foo#)), gp
3857 addl r18 = @ltoff(@tprel(foo#)), gp
3858 addl r19 = @dtprel(foo#), gp
3859 adds r21 = @dtprel(foo#), r13
3860 movl r23 = @dtprel(foo#)
3861 addl r20 = @tprel(foo#), gp
3862 adds r22 = @tprel(foo#), r13
3863 movl r24 = @tprel(foo#)'
3864 tls_as_opt=--fatal-warnings
3868 .section .tdata,"awT",@progbits
3875 tls_as_opt='--fatal-warnings'
3879 .section .tdata,"awT",@progbits
3883 addik r5,r20,x@TLSGD
3884 addik r5,r20,x@TLSLDM'
3885 tls_as_opt='--fatal-warnings'
3889 .section .tdata,"awT",@progbits
3893 addiu $4, $28, %tlsgd(x)
3894 addiu $4, $28, %tlsldm(x)
3895 lui $4, %dtprel_hi(x)
3896 addiu $4, $4, %dtprel_lo(x)
3897 lw $4, %gottprel(x)($28)
3898 lui $4, %tprel_hi(x)
3899 addiu $4, $4, %tprel_lo(x)'
3900 tls_as_opt='-32 --fatal-warnings'
3904 .section .tdata,"awT",@progbits
3909 move.l x@TLSGD(%a5),%a0
3910 move.l x@TLSLDM(%a5),%a0
3911 move.l x@TLSLDO(%a5),%a0
3912 move.l x@TLSIE(%a5),%a0
3913 move.l x@TLSLE(%a5),%a0'
3914 tls_as_opt='--fatal-warnings'
3918 .section ".tdata","awT",@progbits'
3919 tls_as_opt="--fatal-warnings"
3923 .section ".tdata","awT",%progbits
3927 add x0, x0, #:tlsgd_lo12:x
3930 tls_as_opt='--fatal-warnings'
3934 .section ".tdata","awT",@progbits
3937 l.movhi r3, tpoffha(foo)
3939 l.lwz r4, tpofflo(foo)(r3)'
3940 tls_as_opt=--fatal-warnings
3944 .extern __get_tpointer
3960 .section ".tdata","awT",@progbits
3968 addi 3,2,ld0@got@tlsgd
3974 addi 3,2,x1@got@tlsld
3980 addis 9,3,x2@dtprel@ha
3981 addi 9,9,x2@dtprel@l
3984 ld 9,x3@got@dtprel(2)
3988 tls_as_opt="-a64 --fatal-warnings"
3992 .section ".tdata","awT",@progbits
4000 addi 3,31,ld0@got@tlsgd
4002 addi 3,31,x1@got@tlsld
4005 addis 9,3,x2@dtprel@ha
4006 addi 9,9,x2@dtprel@l
4007 lwz 9,x3@got@tprel(31)
4010 addis 9,2,x2@tprel@ha
4011 addi 9,9,x2@tprel@l'
4012 tls_as_opt="-a32 --fatal-warnings"
4016 .section .tdata,"awT",@progbits
4020 call __tls_get_addr'
4021 tls_as_opt='--fatal-warnings'
4025 .section ".tdata","awT",@progbits
4034 l %r1,foo@GOTNTPOFF(%r12)
4035 l %r1,0(%r1):tls_load:foo
4036 bas %r14,0(%r1,%r13):tls_gdcall:foo
4037 bas %r14,0(%r1,%r13):tls_ldcall:foo'
4038 tls_as_opt="-m31 --fatal-warnings"
4042 .section ".tdata","awT",@progbits
4050 lg %r1,foo@GOTNTPOFF(%r12)
4051 larl %r1,foo@INDNTPOFF
4052 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
4053 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
4054 tls_as_opt="-m64 -Aesame --fatal-warnings"
4056 sh-*-* | sh[123456789lbe]*-*-*)
4058 .section ".tdata","awT",@progbits
4066 tls_as_opt=--fatal-warnings
4070 sparc*-sun-solaris2.*)
4077 if test x$on_solaris = xyes && test x$gas_flag = xno; then
4079 .section ".tdata",#alloc,#write,#tls'
4082 .section ".tdata","awT",@progbits'
4083 tls_as_opt="-32 --fatal-warnings"
4085 conftest_s="$conftest_s
4088 sethi %tgd_hi22(foo), %o0
4089 add %o0, %tgd_lo10(foo), %o1
4090 add %l7, %o1, %o0, %tgd_add(foo)
4091 call __tls_get_addr, %tgd_call(foo)
4092 sethi %tldm_hi22(foo), %l1
4093 add %l1, %tldm_lo10(foo), %l2
4094 add %l7, %l2, %o0, %tldm_add(foo)
4095 call __tls_get_addr, %tldm_call(foo)
4096 sethi %tldo_hix22(foo), %l3
4097 xor %l3, %tldo_lox10(foo), %l4
4098 add %o0, %l4, %l5, %tldo_add(foo)
4099 sethi %tie_hi22(foo), %o3
4100 add %o3, %tie_lo10(foo), %o3
4101 ld [%l7 + %o3], %o2, %tie_ld(foo)
4102 add %g7, %o2, %o4, %tie_add(foo)
4103 sethi %tle_hix22(foo), %l1
4104 xor %l1, %tle_lox10(foo), %o5
4105 ld [%g7 + %o5], %o1"
4109 .section ".tdata","awT",@progbits
4112 movi a8, foo@TLSFUNC
4113 movi a10, foo@TLSARG
4114 callx8.tls a8, foo@TLSCALL'
4119 if test "x$enable_tls" = xno ; then
4120 : # TLS explicitly disabled.
4121 elif test "x$enable_tls" = xyes ; then
4122 set_have_as_tls=yes # TLS explicitly enabled.
4123 elif test -z "$conftest_s"; then
4124 : # If we don't have a check, assume no support.
4126 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
4127 [$tls_as_opt], [$conftest_s],,
4128 [set_have_as_tls=yes])
4130 if test $set_have_as_tls = yes ; then
4131 AC_DEFINE(HAVE_AS_TLS, 1,
4132 [Define if your assembler and linker support thread-local storage.])
4135 # Target-specific assembler checks.
4137 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
4138 gcc_cv_ld_static_dynamic=no
4139 gcc_cv_ld_static_option='-Bstatic'
4140 gcc_cv_ld_dynamic_option='-Bdynamic'
4141 if test $in_tree_ld = yes ; then
4142 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
4143 gcc_cv_ld_static_dynamic=yes
4145 elif test x$gcc_cv_ld != x; then
4146 # Check if linker supports -Bstatic/-Bdynamic option
4147 if $gcc_cv_ld --help 2>&1 | grep -- -Bstatic > /dev/null \
4148 && $gcc_cv_ld --help 2>&1 | grep -- -Bdynamic > /dev/null; then
4149 gcc_cv_ld_static_dynamic=yes
4152 # AIX ld uses -b flags
4153 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
4154 gcc_cv_ld_static_dynamic=yes
4155 gcc_cv_ld_static_option="-bstatic"
4156 gcc_cv_ld_dynamic_option="-bdynamic"
4158 # HP-UX ld uses -a flags to select between shared and archive.
4160 if test x"$gnu_ld" = xno; then
4161 gcc_cv_ld_static_dynamic=yes
4162 gcc_cv_ld_static_option="-aarchive_shared"
4163 gcc_cv_ld_dynamic_option="-adefault"
4166 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
4168 gcc_cv_ld_static_dynamic=yes
4173 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
4174 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
4175 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
4176 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
4177 [Define to the linker option to disable use of shared objects.])
4178 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
4179 [Define to the linker option to enable use of shared objects.])
4181 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
4183 AC_MSG_CHECKING(linker --version-script option)
4184 gcc_cv_ld_version_script=no
4185 ld_version_script_option=''
4186 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
4187 gcc_cv_ld_version_script=yes
4188 ld_version_script_option='--version-script'
4189 elif test x$gcc_cv_ld != x; then
4191 # Solaris 2 ld always supports -M. It also supports a subset of
4192 # --version-script since Solaris 11.4, but requires
4193 # -z gnu-version-script-compat to activate.
4195 gcc_cv_ld_version_script=yes
4196 ld_version_script_option='-M'
4200 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
4201 AC_MSG_RESULT($gcc_cv_ld_version_script)
4202 AC_SUBST(ld_version_script_option)
4204 AC_MSG_CHECKING(linker soname option)
4206 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
4207 gcc_cv_ld_soname=yes
4208 ld_soname_option='-soname'
4209 elif test x$gcc_cv_ld != x; then
4212 gcc_cv_ld_soname=yes
4213 ld_soname_option='-install_name'
4215 # Solaris 2 ld always supports -h. It also supports --soname for GNU
4216 # ld compatiblity since some Solaris 10 update.
4218 gcc_cv_ld_soname=yes
4219 ld_soname_option='-h'
4223 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
4224 AC_MSG_RESULT($gcc_cv_ld_soname)
4225 AC_SUBST(ld_soname_option)
4227 if test x"$demangler_in_ld" = xyes; then
4228 AC_MSG_CHECKING(linker --demangle support)
4229 gcc_cv_ld_demangle=no
4230 if test $in_tree_ld = yes; then
4231 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
4232 gcc_cv_ld_demangle=yes
4234 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
4235 # Check if the GNU linker supports --demangle option
4236 if $gcc_cv_ld --help 2>&1 | grep no-demangle > /dev/null; then
4237 gcc_cv_ld_demangle=yes
4240 if test x"$gcc_cv_ld_demangle" = xyes; then
4241 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
4242 [Define if your linker supports --demangle option.])
4244 AC_MSG_RESULT($gcc_cv_ld_demangle)
4247 AC_MSG_CHECKING(linker plugin support)
4249 if test -f liblto_plugin.la; then
4250 save_ld_ver="$ld_ver"
4251 save_ld_vers_major="$ld_vers_major"
4252 save_ld_vers_minor="$ld_vers_minor"
4253 save_ld_is_gold="$ld_is_gold"
4257 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
4259 # FIXME: ld_is_gold?
4260 ld_vers_major="$gcc_cv_gld_major_version"
4261 ld_vers_minor="$gcc_cv_gld_minor_version"
4263 # Determine plugin linker version.
4264 # FIXME: Partial duplicate from above, generalize.
4266 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
4267 if echo "$ld_ver" | grep GNU > /dev/null; then
4268 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
4270 ld_vers=`echo $ld_ver | sed -n \
4271 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
4273 ld_vers=`echo $ld_ver | sed -n \
4274 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
4276 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
4277 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
4282 # Determine plugin support.
4283 if echo "$ld_ver" | grep GNU > /dev/null; then
4284 # Require GNU ld or gold 2.21+ for plugin support by default.
4285 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
4287 elif test "$ld_is_mold" = yes; then
4289 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
4290 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
4295 ld_ver="$save_ld_ver"
4296 ld_vers_major="$save_ld_vers_major"
4297 ld_vers_minor="$save_ld_vers_minor"
4298 ld_is_gold="$save_ld_is_gold"
4300 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
4301 [Define to the level of your linker's plugin support.])
4302 AC_MSG_RESULT($gcc_cv_lto_plugin)
4304 # Target OS-specific assembler checks.
4306 case "$target_os" in
4308 gcc_GAS_CHECK_FEATURE([-mmacosx-version-min option],
4309 gcc_cv_as_mmacosx_version_min,
4310 [-mmacosx-version-min=10.1], [.text],,
4311 [AC_DEFINE(HAVE_AS_MMACOSX_VERSION_MIN_OPTION, 1,
4312 [Define if your Mac OS X assembler supports the -mmacos-version-min option.])])
4316 # Target CPU-specific assembler checks.
4320 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,
4321 [-mabi=lp64], [.text],,,)
4322 if test x$gcc_cv_as_aarch64_mabi = xyes; then
4323 AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
4324 [Define if your assembler supports the -mabi option.])
4326 if test x$with_abi = xilp32; then
4327 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
4328 Upgrade the Assembler.])
4330 if test x"$with_multilib_list" = xdefault; then
4331 TM_MULTILIB_CONFIG=lp64
4333 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
4334 for aarch64_multilib in ${aarch64_multilibs}; do
4335 case ${aarch64_multilib} in
4337 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
4338 Upgrade the Assembler.])
4346 # Check if we have binutils support for relocations types needed by -fpic
4347 gcc_GAS_CHECK_FEATURE([-fpic relocs], gcc_cv_as_aarch64_picreloc,,
4350 ldr x0, [[x2, #:gotpage_lo15:globalsym]]
4351 ],,[AC_DEFINE(HAVE_AS_SMALL_PIC_RELOCS, 1,
4352 [Define if your assembler supports relocs needed by -fpic.])])
4353 # Enable Branch Target Identification Mechanism and Return Address
4354 # Signing by default.
4355 AC_ARG_ENABLE(standard-branch-protection,
4357 AS_HELP_STRING([--enable-standard-branch-protection],
4358 [enable Branch Target Identification Mechanism and Return Address Signing by default for AArch64])
4359 AS_HELP_STRING([--disable-standard-branch-protection],
4360 [disable Branch Target Identification Mechanism and Return Address Signing by default for AArch64])
4365 tm_defines="${tm_defines} TARGET_ENABLE_BTI=1 TARGET_ENABLE_PAC_RET=1"
4370 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-standard-branch-protection.\
4371 Valid choices are 'yes' and 'no'.])
4376 # Enable default workaround for AArch64 Cortex-A53 erratum 835769.
4377 AC_ARG_ENABLE(fix-cortex-a53-835769,
4379 AS_HELP_STRING([--enable-fix-cortex-a53-835769],
4380 [enable workaround for AArch64 Cortex-A53 erratum 835769 by default])
4381 AS_HELP_STRING([--disable-fix-cortex-a53-835769],
4382 [disable workaround for AArch64 Cortex-A53 erratum 835769 by default])
4387 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1"
4392 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\
4393 Valid choices are 'yes' and 'no'.])
4399 # Enable default workaround for AArch64 Cortex-A53 erratum 843419.
4400 AC_ARG_ENABLE(fix-cortex-a53-843419,
4402 AS_HELP_STRING([--enable-fix-cortex-a53-843419],
4403 [enable workaround for AArch64 Cortex-A53 erratum 843419 by default])
4404 AS_HELP_STRING([--disable-fix-cortex-a53-843419],
4405 [disable workaround for AArch64 Cortex-A53 erratum 843419 by default])
4410 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1"
4415 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\
4416 Valid choices are 'yes' and 'no'.])
4424 # All TARGET_ABI_OSF targets.
4425 alpha*-*-linux* | alpha*-*-*bsd*)
4426 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4427 gcc_cv_as_alpha_explicit_relocs,,
4430 extbl $3, $2, $3 !lituse_bytoff!1
4431 ldq $2, a($29) !literal!1
4432 ldq $4, b($29) !literal!2
4433 ldq_u $3, 0($2) !lituse_base!1
4434 ldq $27, f($29) !literal!5
4435 jsr $26, ($27), f !lituse_jsr!5
4436 ldah $29, 0($26) !gpdisp!3
4437 lda $0, c($29) !gprel
4438 ldah $1, d($29) !gprelhigh
4439 lda $1, d($1) !gprellow
4440 lda $29, 0($29) !gpdisp!3],,
4441 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
4442 [Define if your assembler supports explicit relocations.])])
4443 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
4444 gcc_cv_as_alpha_jsrdirect_relocs,,
4447 ldq $27, a($29) !literal!1
4448 jsr $26, ($27), a !lituse_jsrdirect!1],,
4449 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
4450 [Define if your assembler supports the lituse_jsrdirect relocation.])])
4454 gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax,
4455 [--mlink-relax], [.text],,
4456 [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1,
4457 [Define if your avr assembler supports --mlink-relax option.])])
4459 gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,
4461 [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1,
4462 [Define if your avr assembler supports -mrmw option.])])
4464 gcc_GAS_CHECK_FEATURE([__gcc_isr pseudo instruction],
4465 gcc_cv_as_avr_mgccisr,
4471 [AC_DEFINE(HAVE_AS_AVR_MGCCISR_OPTION, 1,
4472 [Define if your avr assembler supports -mgcc-isr option.])])
4474 # Check how default linker description file implements .rodata for
4475 # avrxmega3 (PR21472). avr-gcc assumes .rodata is *not* loaded to
4476 # RAM so avr-gcc skips __do_copy_data for .rodata objects.
4477 AC_MSG_CHECKING(binutils for avrxmega3 .rodata support)
4478 cat > conftest.s <<EOF
4479 .section .rodata,"a",@progbits
4481 ;; avr-nm should print "... R xxvaryy", not "... D xxvaryy".
4486 AC_TRY_COMMAND([$gcc_cv_as -mmcu=avrxmega3 conftest.s -o conftest.o])
4487 AC_TRY_COMMAND([$gcc_cv_ld -mavrxmega3 conftest.o -o conftest.elf])
4488 AC_TRY_COMMAND([$gcc_cv_nm conftest.elf > conftest.nm])
4489 if test -s conftest.nm
4491 if grep ' R xxvaryy' conftest.nm > /dev/null; then
4493 AC_DEFINE(HAVE_LD_AVR_AVRXMEGA3_RODATA_IN_FLASH, 1,
4494 [Define if your default avr linker script for avrxmega3 leaves .rodata in flash.])
4496 AC_MSG_RESULT(no: avrxmega3 .rodata located in RAM)
4497 echo "$as_me: nm output was" >&AS_MESSAGE_LOG_FD
4498 cat conftest.nm >&AS_MESSAGE_LOG_FD
4499 avr_ld_ver="`$gcc_cv_ld -v | sed -e 's:^.* ::'`"
4500 AC_MSG_WARN([[support for avrxmega3 .rodata in flash needs Binutils 2.29 or higher (have $avr_ld_ver)]])
4503 AC_MSG_RESULT(test failed)
4504 echo "$as_me: failed program was" >&AS_MESSAGE_LOG_FD
4505 cat conftest.s >&AS_MESSAGE_LOG_FD
4506 AC_MSG_WARN([[see `config.log' for details]])
4508 rm -f conftest.s conftest.o conftest.elf conftest.nm
4512 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
4513 gcc_cv_as_cris_no_mul_bug,
4514 [-no-mul-bug-abort], [.text],,
4515 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
4516 [Define if your assembler supports the -no-mul-bug-abort option.])])
4520 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,
4522 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
4523 [Define if your assembler supports -relax option.])])
4525 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
4526 gcc_cv_as_sparc_gotdata_op,
4533 sethi %gdop_hix22(foo), %g1
4534 xor %g1, %gdop_lox10(foo), %g1
4535 ld [[%l7 + %g1]], %g2, %gdop(foo)],
4536 [if test x$gcc_cv_ld != x \
4537 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4538 if test x$gcc_cv_objdump != x; then
4539 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
4540 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
4541 gcc_cv_as_sparc_gotdata_op=no
4543 gcc_cv_as_sparc_gotdata_op=yes
4548 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
4549 [Define if your assembler and linker support GOTDATA_OP relocs.])])
4551 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
4552 gcc_cv_as_sparc_ua_pcrel,
4560 .uaword %r_disp32(foo)],
4561 [if test x$gcc_cv_ld != x \
4562 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4563 gcc_cv_as_sparc_ua_pcrel=yes
4566 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
4567 [Define if your assembler and linker support unaligned PC relative relocs.])
4569 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
4570 gcc_cv_as_sparc_ua_pcrel_hidden,
4575 .uaword %r_disp32(foo)
4576 .byte 0x32, 0x33, 0x34
4581 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4582 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
4583 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
4584 | grep ' 31000000 07323334' > /dev/null 2>&1; then
4585 if $gcc_cv_objdump -R conftest 2> /dev/null \
4586 | grep 'DISP32' > /dev/null 2>&1; then
4589 gcc_cv_as_sparc_ua_pcrel_hidden=yes
4593 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
4594 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
4595 ]) # unaligned pcrel relocs
4597 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
4598 gcc_cv_as_sparc_offsetable_lo10,
4601 or %g1, %lo(ab) + 12, %g1
4602 or %g1, %lo(ab + 12), %g1],
4603 [if test x$gcc_cv_objdump != x \
4604 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
4605 | grep ' 82106000 82106000' > /dev/null 2>&1; then
4606 gcc_cv_as_sparc_offsetable_lo10=yes
4608 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
4609 [Define if your assembler supports offsetable %lo().])])
4611 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
4612 gcc_cv_as_sparc_fmaf,
4615 .register %g2, #scratch
4616 .register %g3, #scratch
4618 fmaddd %f0, %f2, %f4, %f6
4619 addxccc %g1, %g2, %g3
4620 fsrl32 %f2, %f4, %f8
4621 fnaddd %f10, %f12, %f14],,
4622 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
4623 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
4625 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
4626 gcc_cv_as_sparc_sparc4,
4629 .register %g2, #scratch
4630 .register %g3, #scratch
4633 1: cwbneg %g2, %g3, 1f
4636 aes_kexpand0 %f4, %f6, %f8
4637 des_round %f38, %f40, %f42, %f44
4638 camellia_f %f54, %f56, %f58, %f60
4639 kasumi_fi_xor %f46, %f48, %f50, %f52],,
4640 [AC_DEFINE(HAVE_AS_SPARC4, 1,
4641 [Define if your assembler supports SPARC4 instructions.])])
4643 gcc_GAS_CHECK_FEATURE([SPARC5 and VIS 4.0 instructions],
4644 gcc_cv_as_sparc_sparc5,
4647 .register %g2, #scratch
4648 .register %g3, #scratch
4651 fpadd8 %f0, %f2, %f4],,
4652 [AC_DEFINE(HAVE_AS_SPARC5_VIS4, 1,
4653 [Define if your assembler supports SPARC5 and VIS 4.0 instructions.])])
4655 gcc_GAS_CHECK_FEATURE([SPARC6 instructions],
4656 gcc_cv_as_sparc_sparc6,
4659 .register %g2, #scratch
4660 .register %g3, #scratch
4663 fpsll64x %f0, %f2, %f4],,
4664 [AC_DEFINE(HAVE_AS_SPARC6, 1,
4665 [Define if your assembler supports SPARC6 instructions.])])
4667 gcc_GAS_CHECK_FEATURE([LEON instructions],
4668 gcc_cv_as_sparc_leon,
4671 .register %g2, #scratch
4672 .register %g3, #scratch
4676 casa [[%g2]] 0xb, %g3, %g1],,
4677 [AC_DEFINE(HAVE_AS_LEON, 1,
4678 [Define if your assembler supports LEON instructions.])])
4682 i[34567]86-*-* | x86_64-*-*)
4686 # Full C++ conformance when using a shared libstdc++-v3 requires some
4687 # support from the Cygwin DLL, which in more recent versions exports
4688 # wrappers to aid in interposing and redirecting operators new, delete,
4689 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
4690 # are configuring for a version of Cygwin that exports the wrappers.
4691 if test x$host = x$target && test x$host_cpu = xi686; then
4692 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
4694 # Can't check presence of libc functions during cross-compile, so
4695 # we just have to assume we're building for an up-to-date target.
4696 gcc_ac_cygwin_dll_wrappers=yes
4698 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
4699 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
4700 [Define if you want to generate code by default that assumes that the
4701 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
4704 cygwin* | pe | mingw32*)
4705 # Recent binutils allows the three-operand form of ".comm" on PE. This
4706 # definition is used unconditionally to initialise the default state of
4707 # the target option variable that governs usage of the feature.
4708 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,,
4710 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
4711 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
4712 [Define if your assembler supports specifying the alignment
4713 of objects allocated using the GAS .comm command.])
4714 # Used for DWARF 2 in PE
4715 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
4716 gcc_cv_as_ix86_pe_secrel32,,
4721 [if test x$gcc_cv_ld != x \
4722 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
4723 gcc_cv_as_ix86_pe_secrel32=yes
4726 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
4727 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
4728 # Test if the assembler supports the extended form of the .section
4729 # directive that specifies section alignment. LTO support uses this,
4730 # but normally only after installation, so we warn but don't fail the
4731 # configure if LTO is enabled but the assembler does not support it.
4732 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
4733 -fatal-warnings,[.section lto_test,"dr0"])
4734 if test x$gcc_cv_as_section_has_align != xyes; then
4735 case ",$enable_languages," in
4737 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
4744 darwin2* | darwin19*)
4745 gcc_GAS_CHECK_FEATURE([llvm assembler x86-pad-for-align option],
4746 gcc_cv_as_mllvm_x86_pad_for_align,
4747 [-mllvm -x86-pad-for-align=false], [.text],,
4748 [AC_DEFINE(HAVE_AS_MLLVM_X86_PAD_FOR_ALIGN, 1,
4749 [Define if your Mac OS X assembler supports -mllvm -x86-pad-for-align=false.])])
4753 gcc_GAS_CHECK_FEATURE([-xbrace_comment], gcc_cv_as_ix86_xbrace_comment,
4754 [-xbrace_comment=no], [.text],,
4755 [AC_DEFINE(HAVE_AS_XBRACE_COMMENT_OPTION, 1,
4756 [Define if your assembler supports -xbrace_comment option.])])
4758 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
4759 gcc_cv_as_ix86_filds,,
4760 [filds (%ebp); fists (%ebp)],,
4761 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
4762 [Define if your assembler uses filds and fists mnemonics.])])
4764 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
4765 gcc_cv_as_ix86_fildq,,
4766 [fildq (%ebp); fistpq (%ebp)],,
4767 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
4768 [Define if your assembler uses fildq and fistq mnemonics.])])
4770 gcc_GAS_CHECK_FEATURE([cmov syntax],
4771 gcc_cv_as_ix86_cmov_sun_syntax,,
4772 [cmovl.l %edx, %eax],,
4773 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
4774 [Define if your assembler supports the Sun syntax for cmov.])])
4776 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
4777 gcc_cv_as_ix86_ffreep,,
4779 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
4780 [Define if your assembler supports the ffreep mnemonic.])])
4782 gcc_GAS_CHECK_FEATURE([.quad directive],
4783 gcc_cv_as_ix86_quad,,
4785 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
4786 [Define if your assembler supports the .quad directive.])])
4788 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
4789 gcc_cv_as_ix86_sahf,,
4792 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
4793 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
4795 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
4796 gcc_cv_as_ix86_interunit_movq,,
4800 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
4801 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
4802 [Define if your assembler supports interunit movq mnemonic.])
4804 gcc_GAS_CHECK_FEATURE([hle prefixes],
4805 gcc_cv_as_ix86_hle,,
4806 [lock xacquire cmpxchg %esi, (%ecx)],,
4807 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
4808 [Define if your assembler supports HLE prefixes.])])
4810 gcc_GAS_CHECK_FEATURE([swap suffix],
4811 gcc_cv_as_ix86_swap,,
4812 [movl.s %esp, %ebp],,
4813 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
4814 [Define if your assembler supports the swap suffix.])])
4816 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
4817 gcc_cv_as_ix86_diff_sect_delta,,
4825 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
4826 [Define if your assembler supports the subtraction of symbols in different sections.])])
4828 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
4829 gcc_cv_as_ix86_rep_lock_prefix,,
4835 lock addl %edi, (%eax,%esi)
4836 lock orl $0, (%esp)],,
4837 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
4838 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
4840 gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
4841 gcc_cv_as_ix86_ud2,,
4843 [AC_DEFINE(HAVE_AS_IX86_UD2, 1,
4844 [Define if your assembler supports the 'ud2' mnemonic.])])
4846 # Enforce 32-bit output with gas and gld.
4847 if test x$gas = xyes; then
4848 as_ix86_gas_32_opt="--32"
4850 if echo "$ld_ver" | grep GNU > /dev/null; then
4851 if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then
4852 ld_ix86_gld_32_opt="-melf_i386_sol2"
4854 ld_ix86_gld_32_opt="-melf_i386"
4858 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
4859 gcc_cv_as_ix86_tlsgdplt,
4860 [$as_ix86_gas_32_opt],
4861 [call tls_gd@tlsgdplt],
4862 [if test x$gcc_cv_ld != x \
4863 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4864 gcc_cv_as_ix86_tlsgdplt=yes
4867 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
4868 [Define if your assembler and linker support @tlsgdplt.])])
4871 .section .tdata,"aw'$tls_section_flag'",@progbits
4873 .section .text,"ax",@progbits
4874 call tls_ld@tlsldmplt'
4876 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
4877 gcc_cv_as_ix86_tlsldmplt,
4878 [$as_ix86_gas_32_opt],
4880 [if test x$gcc_cv_ld != x \
4881 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4882 gcc_cv_as_ix86_tlsldmplt=yes
4885 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT,
4886 [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`],
4887 [Define to 1 if your assembler and linker support @tlsldmplt.])
4890 .section .text,"ax",@progbits
4892 .type _start, @function
4894 leal value@tlsldm(%ebx), %eax
4895 call ___tls_get_addr@plt
4897 .section .tdata,"aw'$tls_section_flag'",@progbits
4898 .type value, @object
4900 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc],
4901 gcc_cv_as_ix86_tlsldm,
4902 [$as_ix86_gas_32_opt],
4904 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4905 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then
4906 if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \
4907 || dis conftest 2>/dev/null | grep nop > /dev/null; then
4908 gcc_cv_as_ix86_tlsldm=yes
4912 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM,
4913 [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`],
4914 [Define to 1 if your assembler and linker support @tlsldm.])
4925 gcc_GAS_CHECK_FEATURE([R_386_GOT32X reloc],
4926 gcc_cv_as_ix86_got32x,
4927 [$as_ix86_gas_32_opt],
4929 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4930 && test x$gcc_cv_readelf != x \
4931 && $gcc_cv_readelf --relocs --wide conftest.o 2>&1 \
4932 | grep R_386_GOT32X > /dev/null 2>&1 \
4933 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4934 if $gcc_cv_objdump -dw conftest 2>&1 \
4935 | grep 0xffffff > /dev/null 2>&1; then
4936 gcc_cv_as_ix86_got32x=no
4938 gcc_cv_as_ix86_got32x=yes
4942 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_GOT32X,
4943 [`if test x"$gcc_cv_as_ix86_got32x" = xyes; then echo 1; else echo 0; fi`],
4944 [Define 0/1 if your assembler and linker support @GOT.])
4946 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
4947 gcc_cv_as_ix86_gotoff_in_data,
4948 [$as_ix86_gas_32_opt],
4954 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
4955 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
4956 [Define true if the assembler supports '.long foo@GOTOFF'.])
4959 .section .text,"ax",@progbits
4961 .type _start, @function
4963 leal ld@tlsldm(%ecx), %eax
4964 call *___tls_get_addr@GOT(%ecx)
4965 leal gd@tlsgd(%ecx), %eax
4966 call *___tls_get_addr@GOT(%ecx)
4968 .section .tdata,"aw'$tls_section_flag'",@progbits
4976 gcc_GAS_CHECK_FEATURE([calling ___tls_get_addr via GOT],
4977 gcc_cv_as_ix86_tls_get_addr_via_got,
4978 [$as_ix86_gas_32_opt],
4980 [if test x$gcc_cv_ld != x \
4981 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4982 gcc_cv_as_ix86_tls_get_addr_via_got=yes
4985 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLS_GET_ADDR_GOT,
4986 [`if test x"$gcc_cv_as_ix86_tls_get_addr_via_got" = xyes; then echo 1; else echo 0; fi`],
4987 [Define 0/1 if your assembler and linker support calling ___tls_get_addr via GOT.])
4991 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
4992 gcc_cv_as_ia64_ltoffx_ldxmov_relocs,,
4994 addl r15 = @ltoffx(x#), gp
4996 ld8.mov r16 = [[r15]], x#
4998 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
4999 [Define if your assembler supports ltoffx and ldxmov relocations.])])
5007 gcc_GAS_CHECK_FEATURE([.machine directive support],
5008 gcc_cv_as_machine_directive,,
5009 [ .machine ppc7400])
5010 if test x$gcc_cv_as_machine_directive != xyes; then
5011 echo "*** This target requires an assembler supporting \".machine\"" >&2
5012 echo you can get it from: https://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
5013 test x$build = x$target && exit 1
5019 *-*-aix*) conftest_s=' .machine "pwr5"
5022 *-*-darwin*) conftest_s=' .text
5024 *) conftest_s=' .machine power4
5029 gcc_GAS_CHECK_FEATURE([mfcr field support],
5030 gcc_cv_as_powerpc_mfcrf,,
5032 [AC_DEFINE(HAVE_AS_MFCRF, 1,
5033 [Define if your assembler supports mfcr field.])])
5036 *-*-aix*) conftest_s=' .csect .text[[PR]]
5038 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
5042 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
5043 *) conftest_s=' .text
5045 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
5048 gcc_GAS_CHECK_FEATURE([rel16 relocs],
5049 gcc_cv_as_powerpc_rel16, -a32,
5051 [AC_DEFINE(HAVE_AS_REL16, 1,
5052 [Define if your assembler supports R_PPC_REL16 relocs.])])
5055 *-*-aix*) conftest_s=' .machine "pwr7"
5058 *) conftest_s=' .machine power7
5063 gcc_GAS_CHECK_FEATURE([vector-scalar support],
5064 gcc_cv_as_powerpc_vsx, -a32,
5066 [AC_DEFINE(HAVE_AS_VSX, 1,
5067 [Define if your assembler supports VSX instructions.])])
5069 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5070 gcc_cv_as_powerpc_gnu_attribute,,
5071 [.gnu_attribute 4,1],,
5072 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5073 [Define if your assembler supports .gnu_attribute.])])
5075 gcc_GAS_CHECK_FEATURE([prologue entry point marker support],
5076 gcc_cv_as_powerpc_entry_markers,-a64 --fatal-warnings,
5077 [ .reloc .,R_PPC64_ENTRY; nop],,
5078 [AC_DEFINE(HAVE_AS_ENTRY_MARKERS, 1,
5079 [Define if your assembler supports the R_PPC64_ENTRY relocation.])])
5081 gcc_GAS_CHECK_FEATURE([plt sequence marker support],
5082 gcc_cv_as_powerpc_pltseq_markers,-a32 --fatal-warnings,
5083 [ .reloc .,R_PPC_PLTSEQ; nop],,
5084 [AC_DEFINE(HAVE_AS_PLTSEQ, 1,
5085 [Define if your assembler supports R_PPC*_PLTSEQ relocations.])])
5089 gcc_GAS_CHECK_FEATURE([AIX .ref support],
5091 [ .csect stuff[[rw]]
5097 [AC_DEFINE(HAVE_AS_REF, 1,
5098 [Define if your assembler supports .ref])])
5100 gcc_GAS_CHECK_FEATURE([AIX DWARF location lists section support],
5101 gcc_cv_as_aix_dwloc,,
5106 [AC_DEFINE(HAVE_XCOFF_DWARF_EXTRAS, 1,
5107 [Define if your assembler supports AIX debug frame section label reference.])])
5113 gcc_GAS_CHECK_FEATURE([explicit relocation support],
5114 gcc_cv_as_mips_explicit_relocs,,
5115 [ lw $4,%gp_rel(foo)($4)],,
5116 [if test x$target_cpu_default = x
5117 then target_cpu_default=MASK_EXPLICIT_RELOCS
5118 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
5121 gcc_GAS_CHECK_FEATURE([-mno-shared support],
5122 gcc_cv_as_mips_no_shared,[-mno-shared], [nop],,
5123 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
5124 [Define if the assembler understands -mno-shared.])])
5126 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5127 gcc_cv_as_mips_gnu_attribute,,
5128 [.gnu_attribute 4,1],,
5129 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5130 [Define if your assembler supports .gnu_attribute.])])
5132 gcc_GAS_CHECK_FEATURE([.module support],
5133 gcc_cv_as_mips_dot_module,[-32],
5136 [AC_DEFINE(HAVE_AS_DOT_MODULE, 1,
5137 [Define if your assembler supports .module.])])
5138 if test x$gcc_cv_as_mips_dot_module = xno \
5139 && test x$with_fp_32 != x; then
5141 [Requesting --with-fp-32= requires assembler support for .module.])
5144 gcc_GAS_CHECK_FEATURE([.micromips support],
5145 gcc_cv_as_micromips_support,[--fatal-warnings],
5147 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
5148 [Define if your assembler supports the .set micromips directive])])
5150 gcc_GAS_CHECK_FEATURE([.dtprelword support],
5151 gcc_cv_as_mips_dtprelword,,
5152 [.section .tdata,"awT",@progbits
5156 .dtprelword x+0x8000],,
5157 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
5158 [Define if your assembler supports .dtprelword.])])
5160 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
5161 gcc_cv_as_mips_dspr1_mult,,
5171 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
5172 [Define if your assembler supports DSPR1 mult.])])
5174 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
5175 gcc_cv_as_ld_jalr_reloc=no
5176 if test $gcc_cv_as_mips_explicit_relocs = yes; then
5177 if test $in_tree_ld = yes ; then
5178 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
5179 && test $in_tree_ld_is_elf = yes; then
5180 gcc_cv_as_ld_jalr_reloc=yes
5182 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
5183 echo ' .ent x' > conftest.s
5184 echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s
5185 echo ' lw $25,%call16(y)($28)' >> conftest.s
5186 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
5187 echo '1: jalr $25' >> conftest.s
5188 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
5189 echo '1: jalr $25' >> conftest.s
5190 echo ' .end x' >> conftest.s
5191 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
5192 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
5193 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
5194 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
5195 gcc_cv_as_ld_jalr_reloc=yes
5201 if test $gcc_cv_as_ld_jalr_reloc = yes; then
5202 if test x$target_cpu_default = x; then
5203 target_cpu_default=MASK_RELAX_PIC_CALLS
5205 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
5208 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
5210 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
5211 [gcc_cv_ld_mips_personality_relaxation],
5212 [gcc_cv_ld_mips_personality_relaxation=no
5213 if test $in_tree_ld = yes ; then
5214 if test "$gcc_cv_gld_major_version" -eq 2 \
5215 -a "$gcc_cv_gld_minor_version" -ge 21 \
5216 -o "$gcc_cv_gld_major_version" -gt 2; then
5217 gcc_cv_ld_mips_personality_relaxation=yes
5219 elif test x$gcc_cv_as != x \
5220 -a x$gcc_cv_ld != x \
5221 -a x$gcc_cv_readelf != x ; then
5222 cat > conftest.s <<EOF
5224 .cfi_personality 0x80,indirect_ptr
5231 .section .data,"aw",@progbits
5235 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
5236 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
5237 if $gcc_cv_readelf -d conftest 2>&1 \
5238 | grep TEXTREL > /dev/null 2>&1; then
5240 elif $gcc_cv_readelf --relocs conftest 2>&1 \
5241 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
5244 gcc_cv_ld_mips_personality_relaxation=yes
5248 rm -f conftest.s conftest.o conftest])
5249 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
5250 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
5251 [Define if your linker can relax absolute .eh_frame personality
5252 pointers into PC-relative form.])
5255 gcc_GAS_CHECK_FEATURE([-mnan= support],
5258 [AC_DEFINE(HAVE_AS_NAN, 1,
5259 [Define if the assembler understands -mnan=.])])
5260 if test x$gcc_cv_as_mips_nan = xno \
5261 && test x$with_nan != x; then
5263 [Requesting --with-nan= requires assembler support for -mnan=])
5267 # Earlier GAS versions generically support .gnu_attribute, but the
5268 # msp430 assembler will not do anything with it.
5269 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5270 gcc_cv_as_msp430_gnu_attribute,,
5271 [.gnu_attribute 4,1],,
5272 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5273 [Define if your assembler supports .gnu_attribute.])])
5274 gcc_GAS_CHECK_FEATURE([.mspabi_attribute support],
5275 gcc_cv_as_msp430_mspabi_attribute,,
5276 [.mspabi_attribute 4,2],,
5277 [AC_DEFINE(HAVE_AS_MSPABI_ATTRIBUTE, 1,
5278 [Define if your assembler supports .mspabi_attribute.])])
5279 if test x$enable_newlib_nano_formatted_io = xyes; then
5280 AC_DEFINE(HAVE_NEWLIB_NANO_FORMATTED_IO, 1, [Define if GCC has been
5281 configured with --enable-newlib-nano-formatted-io.])
5285 # Versions 2.33 and earlier lacked support for the %gotoff relocation
5286 # syntax that is documented in the ABI specification.
5287 gcc_GAS_CHECK_FEATURE([support for %gotoff relocations in constant data],
5288 gcc_cv_as_nios2_gotoff_relocation,,
5291 .long %gotoff(foo)],,
5292 [AC_DEFINE(HAVE_AS_NIOS2_GOTOFF_RELOCATION, 1,
5293 [Define if your assembler supports %gotoff relocation syntax.])])
5296 gcc_GAS_CHECK_FEATURE([.attribute support],
5297 gcc_cv_as_riscv_attribute,,
5298 [.attribute stack_align,4],,
5299 [AC_DEFINE(HAVE_AS_RISCV_ATTRIBUTE, 1,
5300 [Define if your assembler supports .attribute.])])
5301 gcc_GAS_CHECK_FEATURE([-misa-spec= support],
5302 gcc_cv_as_riscv_isa_spec,
5304 [AC_DEFINE(HAVE_AS_MISA_SPEC, 1,
5305 [Define if the assembler understands -misa-spec=.])])
5306 gcc_GAS_CHECK_FEATURE([-march=rv32i_zifencei support],
5307 gcc_cv_as_riscv_march_zifencei,
5308 [-march=rv32i_zifencei2p0],,,
5309 [AC_DEFINE(HAVE_AS_MARCH_ZIFENCEI, 1,
5310 [Define if the assembler understands -march=rv*_zifencei.])])
5313 gcc_GAS_CHECK_FEATURE([.dtprelword support],
5314 gcc_cv_as_loongarch_dtprelword, [2,18,0],,
5315 [.section .tdata,"awT",@progbits
5319 .dtprelword x+0x8000],,
5320 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
5321 [Define if your assembler supports .dtprelword.])])
5322 gcc_GAS_CHECK_FEATURE([explicit relocation support],
5323 gcc_cv_as_loongarch_explicit_relocs,,
5324 [a:pcalau12i $t0,%pc_hi20(a)],,
5325 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
5326 [Define if your assembler supports explicit relocation.])])
5327 gcc_GAS_CHECK_FEATURE([eh_frame pcrel encoding support],
5328 gcc_cv_as_loongarch_eh_frame_pcrel_encoding_support,,
5330 .cfi_personality 0x9b,a
5333 [AC_DEFINE(HAVE_AS_EH_FRAME_PCREL_ENCODING_SUPPORT, 1,
5334 [Define if your assembler supports eh_frame pcrel encoding.])])
5337 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5338 gcc_cv_as_s390_gnu_attribute,,
5339 [.gnu_attribute 8,1],,
5340 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5341 [Define if your assembler supports .gnu_attribute.])])
5342 gcc_GAS_CHECK_FEATURE([.machine and .machinemode support],
5343 gcc_cv_as_s390_machine_machinemode,,
5348 [AC_DEFINE(HAVE_AS_MACHINE_MACHINEMODE, 1,
5349 [Define if your assembler supports .machine and .machinemode.])])
5350 gcc_GAS_CHECK_FEATURE([architecture modifiers support],
5351 gcc_cv_as_s390_architecture_modifiers,,
5352 [ .machine z13+vx ],,
5353 [AC_DEFINE(HAVE_AS_ARCHITECTURE_MODIFIERS, 1,
5354 [Define if your assembler supports architecture modifiers.])])
5355 gcc_GAS_CHECK_FEATURE([vector load/store alignment hints],
5356 gcc_cv_as_s390_vector_loadstore_alignment_hints,,
5357 [ vl %v24,0(%r15),3 ],,
5358 [AC_DEFINE(HAVE_AS_VECTOR_LOADSTORE_ALIGNMENT_HINTS, 1,
5359 [Define if your assembler supports vl/vst/vlm/vstm with an optional alignment hint argument.])])
5360 gcc_GAS_CHECK_FEATURE([vector load/store alignment hints on z13],
5361 gcc_cv_as_s390_vector_loadstore_alignment_hints_on_z13, [-mzarch -march=z13],
5362 [ vl %v24,0(%r15),3 ],,
5363 [AC_DEFINE(HAVE_AS_VECTOR_LOADSTORE_ALIGNMENT_HINTS_ON_Z13, 1,
5364 [Define if your assembler supports vl/vst/vlm/vstm with an optional alignment hint argument on z13.])])
5369 # Mips, LoongArch and HP-UX need the GNU assembler.
5370 # Linux on IA64 might be able to use the Intel assembler.
5373 mips*-*-* | loongarch*-*-* | *-*-hpux* )
5374 if test x$gas_flag = xyes \
5375 || test x"$host" != x"$build" \
5376 || test ! -x "$gcc_cv_as" \
5377 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
5380 echo "*** This configuration requires the GNU assembler" >&2
5386 # AMD GCN needs the LLVM assembler and linker.
5387 # Test that LLVM is at least 13.0.1.
5390 AC_MSG_CHECKING(llvm assembler version)
5391 gcc_cv_as_version="unknown"
5392 if test x$gcc_cv_as != x; then
5393 gcc_cv_as_version=`$gcc_cv_as --version 2>&1 | sed -ne '/version/s/.* \([[0-9]]\)/\1/p' || echo error`
5394 case "$gcc_cv_as_version" in
5395 13.0.[[1-9]]*) ;; # 13.0.1+
5396 13.[[1-9]]*) ;; # 13.1+
5397 1[[4-9]]*) ;; # 14..19
5398 [[2-9]][[0-9]]*) ;; # 20..99
5399 [[1-9]][[0-9]][[0-9]]*) ;; # 100+
5400 error) AC_MSG_ERROR([cannot determine LLVM version]) ;;
5401 *) AC_MSG_ERROR([LLVM 13.0.1 or later is required (found LLVM $gcc_cv_as_version)]) ;;
5404 AC_MSG_RESULT([$gcc_cv_as_version, ok])
5410 gcc_GAS_CHECK_FEATURE([assembler for arm accepts context-specific architecture extensions],
5411 gcc_cv_as_arm_option_extensions,
5412 [-march=armv8.1-m.main+mve],
5417 [AC_DEFINE(HAVE_GAS_ARM_EXTENDED_ARCH, 1,
5418 [Define if your Arm assembler permits context-specific feature extensions.])])
5421 # ??? Not all targets support dwarf2 debug_line, even within a version
5422 # of gas. Moreover, we need to emit a valid instruction to trigger any
5423 # info to the output file. So, as supported targets are added to gas 2.11,
5424 # add some instruction here to (also) show we expect this might work.
5425 # ??? Once 2.11 is released, probably need to add first known working
5426 # version to the per-target configury.
5428 aarch64 | alpha | arc | arm | avr | bfin | cris | csky | i386 | loongarch | m32c \
5429 | m68k | microblaze | mips | nds32 | nios2 | pa | riscv | rs6000 | score | sparc \
5430 | visium | xstormy16 | xtensa)
5440 if test x"$insn" != x; then
5442 .file 1 \"conftest.s\"
5445 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
5446 gcc_cv_as_dwarf2_debug_line,,
5448 [if test x$gcc_cv_objdump != x \
5449 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
5450 | grep debug_line > /dev/null 2>&1; then
5451 gcc_cv_as_dwarf2_debug_line=yes
5452 elif test x$gcc_cv_otool != x \
5453 && $gcc_cv_otool -l conftest.o 2> /dev/null \
5454 | grep debug_line > /dev/null 2>&1; then
5455 gcc_cv_as_dwarf2_debug_line=yes
5458 # The .debug_line file table must be in the exact order that
5459 # we specified the files, since these indices are also used
5460 # by DW_AT_decl_file. Approximate this test by testing if
5461 # the assembler bitches if the same index is assigned twice.
5462 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
5463 gcc_cv_as_dwarf2_file_buggy,,
5467 if test $gcc_cv_as_dwarf2_debug_line = yes \
5468 && test $gcc_cv_as_dwarf2_file_buggy = no; then
5469 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
5470 [Define if your assembler supports dwarf2 .file/.loc directives,
5471 and preserves file table indices exactly as given.])
5473 if test $gcc_cv_as_leb128 = yes; then
5475 .file 1 \"conftest.s\"
5476 .loc 1 3 0 view .LVU1
5482 gcc_GAS_CHECK_FEATURE([dwarf2 debug_view support],
5483 gcc_cv_as_dwarf2_debug_view,,
5485 [AC_DEFINE(HAVE_AS_DWARF2_DEBUG_VIEW, 1,
5486 [Define if your assembler supports views in dwarf2 .loc directives.])])
5490 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
5491 gcc_cv_as_gdwarf2_flag,
5492 [--gdwarf2], [$insn],,
5493 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
5494 [Define if your assembler supports the --gdwarf2 option.])])
5496 gcc_GAS_CHECK_FEATURE([--gdwarf-5 option],
5497 gcc_cv_as_gdwarf_5_flag,
5498 [--gdwarf-5], [$insn],
5499 [if test x$gcc_cv_objdump != x \
5500 && $gcc_cv_objdump -Wi conftest.o 2>&1 \
5501 | grep DW_TAG_compile_unit > /dev/null 2>&1; then
5502 gcc_cv_as_gdwarf_5_flag=yes;
5503 fi],[AC_DEFINE(HAVE_AS_GDWARF_5_DEBUG_FLAG, 1,
5504 [Define if your assembler supports the --gdwarf-5 option.])])
5507 win32 | pe | cygwin* | mingw32*)
5508 section_flags=\"dr\"
5509 function_type=".def foo; .scl 2; .type 32; .endef"
5512 section_flags=\"\",%progbits
5513 function_type=".type foo, %function"
5514 function_size=".size foo, .-foo";;
5516 dwarf4_debug_info_size=0x46
5517 dwarf4_high_pc_form=7
5518 dwarf4_debug_aranges_size=0x2c
5520 for dwarf4_addr_size in 8 4; do
5536 .section .debug_info,$section_flags
5538 .4byte $dwarf4_debug_info_size
5540 .4byte .Ldebug_abbrev0
5541 .byte 0x$dwarf4_addr_size
5543 .ascii \"GNU C17\\0\"
5547 .${dwarf4_addr_size}byte .Ltext0
5548 .${dwarf4_addr_size}byte .Letext0-.Ltext0
5549 .4byte .Ldebug_line0
5555 .${dwarf4_addr_size}byte .LFB0
5556 .${dwarf4_addr_size}byte .LFE0-.LFB0
5560 .section .debug_abbrev,$section_flags
5576 .byte 0x$dwarf4_high_pc_form
5597 .byte 0x$dwarf4_high_pc_form
5603 .section .debug_aranges,$section_flags
5604 .4byte $dwarf4_debug_aranges_size
5606 .4byte .Ldebug_info0
5611 .${dwarf4_addr_size}byte .Ltext0
5612 .${dwarf4_addr_size}byte .Letext0-.Ltext0
5613 .${dwarf4_addr_size}byte 0
5614 .${dwarf4_addr_size}byte 0
5615 .section .debug_line,$section_flags
5617 .4byte .LELT0-.LSLT0
5620 .4byte .LELTP0-.LASLTP0
5648 .byte 0x$dwarf4_line_sz
5650 .${dwarf4_addr_size}byte .LM1
5655 .byte 0x$dwarf4_line_sz
5657 .${dwarf4_addr_size}byte .LM2
5662 .byte 0x$dwarf4_line_sz
5664 .${dwarf4_addr_size}byte .Letext0
5669 .section .debug_str,$section_flags
5673 if test $dwarf4_addr_size = 4; then
5674 gcc_GAS_CHECK_FEATURE([assembly of compiler generated 32-bit .debug_line],
5675 gcc_cv_as_debug_line_32_flag,,
5677 [dwarf4_success=yes])
5679 gcc_GAS_CHECK_FEATURE([assembly of compiler generated 64-bit .debug_line],
5680 gcc_cv_as_debug_line_64_flag,,
5682 [dwarf4_success=yes])
5684 if test $dwarf4_success = yes; then
5686 gcc_GAS_CHECK_FEATURE([--gdwarf-4 not refusing compiler generated .debug_line],
5687 gcc_cv_as_dwarf_4_debug_line_flag,
5688 [--gdwarf-4], [$conftest_s],,
5689 [dwarf4_success=yes])
5692 dwarf4_debug_info_size=0x36
5693 dwarf4_high_pc_form=6
5694 dwarf4_debug_aranges_size=0x1c
5698 if test $dwarf4_success = yes; then
5716 gcc_GAS_CHECK_FEATURE([--gdwarf-4 with the APP marker],
5717 gcc_cv_as_dwarf_4_app_flag,
5718 [--gdwarf-4], [$conftest_s],, [dwarf4_success=yes])
5721 if test $dwarf4_success = yes; then
5731 gcc_GAS_CHECK_FEATURE([working --gdwarf-4/--gdwarf-5 for all sources],
5732 gcc_cv_as_working_gdwarf_n_flag,
5736 if test x$gcc_cv_objdump != x \
5737 && $gcc_cv_objdump -W conftest.o 2>&1 \
5738 | grep conftest.s > /dev/null 2>&1; then
5739 gcc_cv_as_working_gdwarf_n_flag=no
5741 gcc_cv_as_working_gdwarf_n_flag=yes
5743 changequote([,])dnl])
5744 if test $gcc_cv_as_working_gdwarf_n_flag = yes; then
5745 AC_DEFINE(HAVE_AS_WORKING_DWARF_N_FLAG, 1,
5746 [Define if your assembler supports --gdwarf-4/--gdwarf-5 even with
5747 compiler generated .debug_line.])
5751 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
5752 gcc_cv_as_debug_prefix_map_flag,
5753 [--debug-prefix-map /a=/b], [$insn],,
5754 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
5755 [Define if your assembler supports the --debug-prefix-map option.])])
5758 gcc_GAS_CHECK_FEATURE([compressed debug sections],
5759 gcc_cv_as_compress_debug,,,
5760 [# gas compiled without zlib cannot compress debug sections and warns
5761 # about it, but still exits successfully. So check for this, too.
5762 if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null
5764 gcc_cv_as_compress_debug=0
5765 elif $gcc_cv_as --compress-debug-sections=zlib -o conftest.o conftest.s > /dev/null 2>&1
5767 gcc_cv_as_compress_debug=1
5768 gcc_cv_as_compress_debug_option="--compress-debug-sections"
5769 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
5770 # Since binutils 2.40, gas supports --compress-debug-sections=zstd.
5771 if $gcc_cv_as --compress-debug-sections=zstd -o conftest.o conftest.s > /dev/null 2>&1
5773 gcc_cv_as_compress_debug=2
5776 gcc_cv_as_compress_debug=0
5778 AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug,
5779 [Define to the level of your assembler's compressed debug section support.])
5780 AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option",
5781 [Define to the assembler option to enable compressed debug sections.])
5782 AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option",
5783 [Define to the assembler option to disable compressed debug sections.])
5785 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,,
5787 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
5788 [Define if your assembler supports .lcomm with an alignment field.])])
5790 if test x$with_sysroot = x && test x$host = x$target \
5791 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
5792 && test "$prefix" != "NONE"; then
5793 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
5794 [Define to PREFIX/include if cpp should also search that directory.])
5797 # Determine the version of glibc, if any, used on the target.
5798 AC_MSG_CHECKING([for target glibc version])
5799 AC_ARG_WITH([glibc-version],
5800 [AS_HELP_STRING([--with-glibc-version=M.N],
5801 [assume GCC used with glibc version M.N or later])], [
5802 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
5803 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
5804 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
5806 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
5808 glibc_version_major=0
5809 glibc_version_minor=0
5810 [if test -f $target_header_dir/features.h \
5811 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
5812 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
5813 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
5814 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
5816 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
5817 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MAJOR], [$glibc_version_major],
5818 [GNU C Library major version number used on the target, or 0.])
5819 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MINOR], [$glibc_version_minor],
5820 [GNU C Library minor version number used on the target, or 0.])
5822 AC_ARG_ENABLE(gnu-unique-object,
5823 [AS_HELP_STRING([--enable-gnu-unique-object],
5824 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
5825 [case $enable_gnu_unique_object in
5827 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
5828 Valid choices are 'yes' and 'no'.]) ;;
5830 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,,
5831 [.type foo, '$target_type_format_char'gnu_unique_object],,
5832 # We need to unquote above to to use the definition from config.gcc.
5833 # Also check for ld.so support, i.e. glibc 2.11 or higher.
5834 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
5836 if test x$enable_gnu_unique_object = xyes; then
5837 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
5838 [Define if your assembler supports @gnu_unique_object.])
5841 AC_CACHE_CHECK([assembler for tolerance to line number 0],
5842 [gcc_cv_as_line_zero],
5843 [gcc_cv_as_line_zero=no
5844 if test "x$gcc_cv_as" != x; then
5845 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
5846 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
5847 test "x`cat conftest.out`" = x
5849 gcc_cv_as_line_zero=yes
5851 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
5852 cat conftest.s >&AS_MESSAGE_LOG_FD
5853 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
5854 cat conftest.out >&AS_MESSAGE_LOG_FD
5856 rm -f conftest.o conftest.s conftest.out
5858 if test "x$gcc_cv_as_line_zero" = xyes; then
5859 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
5860 [Define if the assembler won't complain about a line such as # 0 "" 2.])
5863 AC_MSG_CHECKING(support for thin archives)
5864 thin_archive_support=no
5865 echo 'int main (void) { return 0; }' > conftest.c
5866 if ($AR --version | sed 1q | grep "GNU ar" \
5867 && $CC $CFLAGS -c conftest.c \
5868 && $AR rcT conftest.a conftest.o \
5869 && $CC $CFLAGS $LDFLAGS -o conftest conftest.a) >/dev/null 2>&1; then
5870 thin_archive_support=yes
5872 rm -f conftest.c conftest.o conftest.a conftest
5873 AC_MSG_RESULT($thin_archive_support)
5874 AC_SUBST(thin_archive_support)
5876 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
5877 gcc_cv_ld_eh_frame_hdr=no
5878 if test $in_tree_ld = yes ; then
5879 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
5880 && test $in_tree_ld_is_elf = yes; then
5881 gcc_cv_ld_eh_frame_hdr=yes
5883 elif test x$gcc_cv_ld != x; then
5884 if echo "$ld_ver" | grep GNU > /dev/null; then
5885 # Check if linker supports --eh-frame-hdr option
5886 if $gcc_cv_ld --help 2>&1 | grep eh-frame-hdr > /dev/null; then
5887 gcc_cv_ld_eh_frame_hdr=yes
5892 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
5893 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
5894 gcc_cv_ld_eh_frame_hdr=yes
5900 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
5901 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
5902 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
5903 [Define if your linker supports .eh_frame_hdr.])
5905 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
5907 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
5908 gcc_cv_ld_eh_frame_ciev3=no
5909 if test $in_tree_ld = yes ; then
5910 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5911 && test $in_tree_ld_is_elf = yes; then
5912 gcc_cv_ld_eh_frame_ciev3=yes
5914 elif test x$gcc_cv_ld != x; then
5915 if echo "$ld_ver" | grep GNU > /dev/null; then
5916 gcc_cv_ld_eh_frame_ciev3=yes
5917 if test 0"$ld_date" -lt 20040513; then
5918 if test -n "$ld_date"; then
5919 # If there was date string, but was earlier than 2004-05-13, fail
5920 gcc_cv_ld_eh_frame_ciev3=no
5921 elif test "$ld_vers_major" -lt 2; then
5922 gcc_cv_ld_eh_frame_ciev3=no
5923 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
5924 gcc_cv_ld_eh_frame_ciev3=no
5930 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
5931 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
5932 gcc_cv_ld_eh_frame_ciev3=yes
5938 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
5939 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
5940 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
5941 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
5943 AC_MSG_CHECKING(linker position independent executable support)
5945 if test $in_tree_ld = yes ; then
5947 # Full PIE support on Solaris was only introduced in gld 2.26.
5948 *-*-solaris2*) gcc_gld_pie_min_version=26 ;;
5949 *) gcc_gld_pie_min_version=15 ;;
5951 if test "$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 \
5952 && test $in_tree_ld_is_elf = yes; then
5955 elif test x$gcc_cv_ld != x; then
5956 # Check if linker supports -pie option
5957 if $gcc_cv_ld --help 2>&1 | grep -- -pie > /dev/null; then
5961 if echo "$ld_ver" | grep GNU > /dev/null \
5962 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
5969 *-*-solaris2.1[[1-9]]*)
5970 # Solaris 11.3 added PIE support.
5971 if $gcc_cv_ld -z help 2>&1 | grep -- type.*pie > /dev/null; then
5978 if test x"$gcc_cv_ld_pie" = xyes; then
5979 AC_DEFINE(HAVE_LD_PIE, 1,
5980 [Define if your linker supports PIE option.])
5982 AC_MSG_RESULT($gcc_cv_ld_pie)
5984 AC_MSG_CHECKING(linker PIE support with copy reloc)
5985 gcc_cv_ld_pie_copyreloc=no
5986 if test $gcc_cv_ld_pie = yes ; then
5987 if test $in_tree_ld = yes ; then
5988 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
5989 gcc_cv_ld_pie_copyreloc=yes
5991 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5992 # Check if linker supports -pie option with copy reloc
5994 i?86-*-linux* | x86_64-*-linux*)
5995 cat > conftest1.s <<EOF
5998 .type a_glob, @object
6003 cat > conftest2.s <<EOF
6006 .type main, @function
6008 movl %eax, a_glob(%rip)
6011 .section .data.rel,"aw",@progbits
6016 if $gcc_cv_as --64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
6017 && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \
6018 && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
6019 && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then
6020 gcc_cv_ld_pie_copyreloc=yes
6022 rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s
6027 AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC,
6028 [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`],
6029 [Define 0/1 if your linker supports -pie option with copy reloc.])
6030 AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc)
6032 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
6033 gcc_cv_ld_eh_gc_sections=no
6034 if test $in_tree_ld = yes ; then
6035 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
6036 && test $in_tree_ld_is_elf = yes; then
6037 gcc_cv_ld_eh_gc_sections=yes
6039 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
6040 cat > conftest.s <<EOF
6043 .type _start, @function
6046 .size _start, .-_start
6047 .section .text.foo,"ax",@progbits
6048 .type foo, @function
6052 .section .gcc_except_table.foo,"a",@progbits
6055 .section .eh_frame,"a",@progbits
6058 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
6059 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
6060 | grep "gc-sections option ignored" > /dev/null; then
6061 gcc_cv_ld_eh_gc_sections=no
6062 elif $gcc_cv_objdump -h conftest 2> /dev/null \
6063 | grep gcc_except_table > /dev/null; then
6064 gcc_cv_ld_eh_gc_sections=yes
6065 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
6066 if test x$gcc_cv_as_comdat_group != xyes; then
6067 gcc_cv_ld_eh_gc_sections=no
6068 cat > conftest.s <<EOF
6071 .type _start, @function
6074 .size _start, .-_start
6075 .section .gnu.linkonce.t.foo,"ax",@progbits
6076 .type foo, @function
6080 .section .gcc_except_table.foo,"a",@progbits
6083 .section .eh_frame,"a",@progbits
6086 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
6087 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
6088 | grep "gc-sections option ignored" > /dev/null; then
6089 gcc_cv_ld_eh_gc_sections=no
6090 elif $gcc_cv_objdump -h conftest 2> /dev/null \
6091 | grep gcc_except_table > /dev/null; then
6092 gcc_cv_ld_eh_gc_sections=yes
6098 rm -f conftest.s conftest.o conftest
6102 # ??? This apparently exposes a binutils bug with PC-relative relocations.
6103 gcc_cv_ld_eh_gc_sections=no
6106 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
6107 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
6108 [Define if your linker supports garbage collection of
6109 sections in presence of EH frames.])
6111 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
6113 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
6114 gcc_cv_ld_eh_gc_sections_bug=no
6115 if test $in_tree_ld = yes ; then
6116 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
6117 && test $in_tree_ld_is_elf = yes; then
6118 gcc_cv_ld_eh_gc_sections_bug=yes
6120 elif test x$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
6121 gcc_cv_ld_eh_gc_sections_bug=yes
6122 cat > conftest.s <<EOF
6125 .type _start, @function
6128 .size _start, .-_start
6129 .section .text.startup.foo,"ax",@progbits
6130 .type foo, @function
6134 .section .gcc_except_table.foo,"a",@progbits
6137 .section .eh_frame,"a",@progbits
6140 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
6141 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
6142 | grep "gc-sections option ignored" > /dev/null; then
6144 elif $gcc_cv_objdump -h conftest 2> /dev/null \
6145 | grep gcc_except_table > /dev/null; then
6146 gcc_cv_ld_eh_gc_sections_bug=no
6149 rm -f conftest.s conftest.o conftest
6151 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
6152 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
6153 [Define if your linker has buggy garbage collection of
6154 sections support when .text.startup.foo like sections are used.])
6156 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
6158 AC_MSG_CHECKING(linker for compressed debug sections)
6159 # GNU ld/gold support --compressed-debug-sections=zlib since binutils 2.26.
6160 if $gcc_cv_ld --help 2>&1 | grep -- '--compress-debug-sections.*\<zlib-gabi\>' > /dev/null; then
6161 gcc_cv_ld_compress_debug=1
6162 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
6163 # Detect zstd debug section compression support
6164 if $gcc_cv_ld --help 2>&1 | grep -- '--compress-debug-sections.*\<zstd\>' > /dev/null; then
6165 gcc_cv_ld_compress_debug=2
6171 # Introduced in Solaris 11.2.
6172 if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then
6173 gcc_cv_ld_compress_debug=1
6174 gcc_cv_ld_compress_debug_option="-z compress-sections"
6176 gcc_cv_ld_compress_debug=0
6180 # Assume linkers other than GNU ld don't support compessed debug
6182 gcc_cv_ld_compress_debug=0
6187 AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug,
6188 [Define to the level of your linker's compressed debug section support.])
6189 AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option",
6190 [Define to the linker option to enable compressed debug sections.])
6191 AC_MSG_RESULT($gcc_cv_ld_compress_debug)
6193 if test x"$ld64_flag" = x"yes"; then
6195 # Set defaults for possibly untestable items.
6196 gcc_cv_ld64_export_dynamic=0
6197 gcc_cv_ld64_platform_version=0
6199 if test "$build" = "$host"; then
6205 # On Darwin, because of FAT library support, it is often possible to execute
6206 # exes from compatible archs even when the host differs from the build system.
6207 case "$build","$host" in
6208 x86_64-*-darwin*,i?86-*-darwin* | powerpc64*-*-darwin*,powerpc*-*-darwin*)
6213 # If the configurer specified a minimum ld64 version to be supported, then use
6214 # that to determine feature support.
6215 if test x"${gcc_cv_ld64_version}" != x; then
6216 AC_MSG_CHECKING(ld64 specified version)
6217 gcc_cv_ld64_major=`echo "$gcc_cv_ld64_version" | sed -e 's/\..*//'`
6218 AC_MSG_RESULT($gcc_cv_ld64_major)
6219 if test "$gcc_cv_ld64_major" -ge 236; then
6220 gcc_cv_ld64_export_dynamic=1
6222 if test "$gcc_cv_ld64_major" -ge 512; then
6223 gcc_cv_ld64_platform_version=1
6225 elif test -x "$gcc_cv_ld" -a "$darwin_try_test" -eq 1; then
6226 # If the version was not specified, try to find it.
6227 AC_MSG_CHECKING(linker version)
6228 if test x"${gcc_cv_ld64_version}" = x; then
6229 gcc_cv_ld64_version=`$gcc_cv_ld -v 2>&1 | grep ld64 | sed s/.*ld64-// | awk '{print $1}'`
6231 AC_MSG_RESULT($gcc_cv_ld64_version)
6233 AC_MSG_CHECKING(linker for -export_dynamic support)
6234 gcc_cv_ld64_export_dynamic=1
6235 if $gcc_cv_ld -export_dynamic < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then
6236 gcc_cv_ld64_export_dynamic=0
6238 AC_MSG_RESULT($gcc_cv_ld64_export_dynamic)
6240 AC_MSG_CHECKING(linker for -platform_version support)
6241 gcc_cv_ld64_platform_version=1
6242 if $gcc_cv_ld -platform_version macos 10.5 0.0 < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then
6243 gcc_cv_ld64_platform_version=0
6245 AC_MSG_RESULT($gcc_cv_ld64_platform_version)
6248 if test x"${gcc_cv_ld64_version}" != x; then
6249 AC_DEFINE_UNQUOTED(LD64_VERSION, "${gcc_cv_ld64_version}",
6250 [Define to ld64 version.])
6253 AC_DEFINE_UNQUOTED(LD64_HAS_EXPORT_DYNAMIC, $gcc_cv_ld64_export_dynamic,
6254 [Define to 1 if ld64 supports '-export_dynamic'.])
6256 AC_DEFINE_UNQUOTED(LD64_HAS_PLATFORM_VERSION, $gcc_cv_ld64_platform_version,
6257 [Define to 1 if ld64 supports '-platform_version'.])
6260 if test x"$dsymutil_flag" = x"yes"; then
6262 # If the user specified a dsymutil path, then we will already have the
6263 # version string, otherwise, pick it up.
6264 if test x"$gcc_cv_dsymutil" = x; then
6265 AC_MSG_WARN([dsymutil is a required tool for this system, but not found])
6266 dsymutil_vers="tool unspecified"
6267 elif test x"$dsymutil_vers" = x; then
6268 dsymutil_vers=`$gcc_cv_dsymutil -v /dev/null 2>&1`
6271 dsymutil_temp=`echo $dsymutil_vers | sed 1q`
6272 AC_MSG_CHECKING(dsymutil version "$dsymutil_temp")
6273 if echo $dsymutil_temp | grep dwarfutils- > /dev/null; then
6274 dsymutil_kind=DWARFUTILS
6275 dsymutil_vers=`echo $dsymutil_temp | sed 's/.*dwarfutils-\([[0-9\.]]*\).*/\1/'`
6276 elif echo $dsymutil_temp | grep clang- > /dev/null; then
6278 dsymutil_vers=`echo $dsymutil_temp | sed 's/.*clang-\([[0-9\.]]*\).*/\1/'`
6279 elif echo $dsymutil_temp | grep 'LLVM version ' > /dev/null; then
6281 dsymutil_vers=`echo $dsymutil_temp | sed 's/.*LLVM\ version\ \([[0-9\.]]*\).*/\1/'`
6283 dsymutil_kind=UNKNOWN
6286 dsymutil_major=`expr "$dsymutil_vers" : '\([[0-9]]*\)'`
6287 dsymutil_minor=`expr "$dsymutil_vers" : '[[0-9]]*\.\([[0-9]]*\)'`
6288 dsymutil_tiny=`expr "$dsymutil_vers" : '[[0-9]]*\.[[0-9]]*\.\([[0-9]]*\)'`
6289 if test x"${dsymutil_minor}" = x; then
6292 if test x"${dsymutil_tiny}" = x; then
6295 AC_DEFINE_UNQUOTED(DSYMUTIL_VERSION, [$dsymutil_kind,${dsymutil_major},${dsymutil_minor},${dsymutil_tiny}],
6296 [Define to the dsymutil version.])
6297 AC_MSG_RESULT($dsymutil_vers : $dsymutil_kind ${dsymutil_major} ${dsymutil_minor} ${dsymutil_tiny} )
6301 win32 | pe | cygwin* | mingw32*)
6302 AC_MSG_CHECKING(broken PE linker dwarf5 support)
6303 gcc_cv_ld_broken_pe_dwarf5=yes
6304 if test $in_tree_ld = yes ; then
6305 if grep -q '\.debug_loclists.*BLOCK.*__section_alignment__.*NOLOAD.*:' \
6306 $gcc_cv_ld_gld_srcdir/scripttempl/pe*.sc \
6307 && grep -q '\.debug_rnglists.*BLOCK.*__section_alignment__.*NOLOAD.*:' \
6308 $gcc_cv_ld_gld_srcdir/scripttempl/pe*.sc; then
6309 gcc_cv_ld_broken_pe_dwarf5=no
6312 if $gcc_cv_ld --verbose 2>&1 | grep -q '\.debug_loclists.*BLOCK.*__section_alignment__.*NOLOAD.*:' \
6313 && $gcc_cv_ld --verbose 2>&1 | grep -q '\.debug_rnglists.*BLOCK.*__section_alignment__.*NOLOAD.*:'; then
6314 gcc_cv_ld_broken_pe_dwarf5=no
6317 if test x$gcc_cv_ld_broken_pe_dwarf5 = xyes; then
6318 AC_DEFINE(HAVE_LD_BROKEN_PE_DWARF5, 1,
6319 [Define if the PE linker has broken DWARF 5 support.])
6321 AC_MSG_RESULT($gcc_cv_ld_broken_pe_dwarf5)
6323 AC_MSG_CHECKING(PE linker --disable-dynamicbase support)
6324 gcc_cv_ld_disable_dynamicbase=no
6325 if test $in_tree_ld = yes; then
6326 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 36 -o "$gcc_cv_gld_major_version" -gt 2; then \
6327 gcc_cv_ld_disable_dynamicbase=yes
6330 if $gcc_cv_ld --help 2>&1 | grep -q 'disable\-]dynamicbase' > /dev/null; then
6331 gcc_cv_ld_disable_dynamicbase=yes
6334 if test x"$gcc_cv_ld_disable_dynamicbase" = xyes; then
6335 AC_DEFINE(HAVE_LD_PE_DISABLE_DYNAMICBASE, 1,
6336 [Define if the PE linker supports --disable-dynamicbase option.])
6338 AC_MSG_RESULT($gcc_cv_ld_disable_dynamicbase)
6346 AC_CACHE_CHECK(linker --as-needed support,
6347 gcc_cv_ld_as_needed,
6348 [gcc_cv_ld_as_needed=no
6349 gcc_cv_ld_as_needed_option='--as-needed'
6350 gcc_cv_ld_no_as_needed_option='--no-as-needed'
6351 if test $in_tree_ld = yes ; then
6352 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
6353 && test $in_tree_ld_is_elf = yes; then
6354 gcc_cv_ld_as_needed=yes
6355 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 28; then
6356 gcc_cv_ld_as_needed_option='--push-state --as-needed'
6357 gcc_cv_ld_no_as_needed_option='--pop-state'
6360 elif test x$gcc_cv_ld != x; then
6361 # Check if linker supports --as-needed and --no-as-needed options
6362 if $gcc_cv_ld --help 2>&1 | grep as-needed > /dev/null; then
6363 gcc_cv_ld_as_needed=yes
6364 if $gcc_cv_ld --help 2>&1 | grep push-state > /dev/null \
6365 && $gcc_cv_ld --help 2>&1 | grep pop-state > /dev/null \
6366 && echo "$ld_ver" | grep GNU > /dev/null \
6367 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 28; then
6368 # Use these options only when both ld.bfd and ld.gold support
6369 # --push-state/--pop-state, which unfortunately wasn't added
6371 gcc_cv_ld_as_needed_option='--push-state --as-needed'
6372 gcc_cv_ld_no_as_needed_option='--pop-state'
6375 case "$target:$gnu_ld" in
6377 # Solaris 2 ld always supports -z ignore/-z record. Prefer the native
6379 gcc_cv_ld_as_needed=yes
6380 gcc_cv_ld_as_needed_option="-z ignore"
6381 gcc_cv_ld_no_as_needed_option="-z record"
6385 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
6386 # dl_iterate_phdr, i.e. since Solaris 11.
6388 *-*-solaris2.1[[1-9]]*)
6390 i?86-*-* | x86_64-*-*)
6391 if echo "$ld_ver" | grep GNU > /dev/null; then
6392 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
6393 gcc_cv_ld_as_needed=no
6399 gcc_cv_ld_as_needed=no
6403 if test x"$gcc_cv_ld_as_needed" = xyes; then
6404 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
6405 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
6406 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
6407 [Define to the linker option to ignore unused dependencies.])
6408 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
6409 [Define to the linker option to keep unused dependencies.])
6412 AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities)
6413 saved_LDFLAGS="$LDFLAGS"
6414 for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do
6415 LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map"
6416 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
6417 [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no])
6419 LDFLAGS="$saved_LDFLAGS"
6420 if test "x$gcc_cv_ld_clearcap" = xyes; then
6421 AC_DEFINE([HAVE_LD_CLEARCAP], 1,
6422 [Define if the linker supports clearing hardware capabilities via mapfile.])
6423 AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map])
6425 AC_MSG_RESULT($gcc_cv_ld_clearcap)
6431 emul_name="-melf32lppc"
6434 emul_name="-melf32ppc"
6437 AC_CACHE_CHECK(linker .gnu.attributes long double support,
6439 [gcc_cv_ld_ppc_attr=no
6440 if test x"$ld_is_gold" = xyes; then
6441 gcc_cv_ld_ppc_attr=yes
6442 elif test $in_tree_ld = yes ; then
6443 if test "$gcc_cv_gld_major_version" -eq 2 \
6444 -a "$gcc_cv_gld_minor_version" -ge 28 \
6445 -o "$gcc_cv_gld_major_version" -gt 2; then
6446 gcc_cv_ld_ppc_attr=yes
6448 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6449 # check that merging the long double .gnu_attribute doesn't warn
6450 cat > conftest1.s <<EOF
6453 cat > conftest2.s <<EOF
6456 if $gcc_cv_as -a32 -o conftest1.o conftest1.s > /dev/null 2>&1 \
6457 && $gcc_cv_as -a32 -o conftest2.o conftest2.s > /dev/null 2>&1 \
6458 && $gcc_cv_ld $emul_name -r -o conftest.o conftest1.o conftest2.o > /dev/null 2> conftest.err \
6459 && test ! -s conftest.err; then
6460 gcc_cv_ld_ppc_attr=yes
6462 rm -f conftest.err conftest.o conftest1.o conftest2.o conftest1.s conftest2.s
6465 if test x$gcc_cv_ld_ppc_attr = xyes; then
6466 AC_DEFINE(HAVE_LD_PPC_GNU_ATTR_LONG_DOUBLE, 1,
6467 [Define if your PowerPC linker has .gnu.attributes long double support.])
6472 case "$target:$tm_file" in
6473 powerpc64*-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
6476 emul_name="-melf64lppc"
6479 emul_name="-melf64ppc"
6482 emul_name="-melf64lppc_fbsd"
6485 emul_name="-melf64ppc_fbsd"
6488 AC_CACHE_CHECK(linker support for omitting dot symbols,
6489 gcc_cv_ld_no_dot_syms,
6490 [gcc_cv_ld_no_dot_syms=no
6491 if test x"$ld_is_gold" = xyes; then
6492 gcc_cv_ld_no_dot_syms=yes
6493 elif test $in_tree_ld = yes ; then
6494 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
6495 gcc_cv_ld_no_dot_syms=yes
6497 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6498 cat > conftest1.s <<EOF
6502 cat > conftest2.s <<EOF
6503 .section ".opd","aw"
6508 .quad .LEfoo,.TOC.@tocbase,0
6514 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
6515 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
6516 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
6517 gcc_cv_ld_no_dot_syms=yes
6519 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
6522 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
6523 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
6524 [Define if your PowerPC64 linker only needs function descriptor syms.])
6527 AC_CACHE_CHECK(linker large toc support,
6528 gcc_cv_ld_large_toc,
6529 [gcc_cv_ld_large_toc=no
6530 if test x"$ld_is_gold" = xyes; then
6531 gcc_cv_ld_large_toc=yes
6532 elif test $in_tree_ld = yes ; then
6533 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
6534 gcc_cv_ld_large_toc=yes
6536 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6537 cat > conftest.s <<EOF
6538 .section ".tbss","awT",@nobits
6544 addis 9,13,ie0@got@tprel@ha
6545 ld 9,ie0@got@tprel@l(9)
6547 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
6548 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
6549 gcc_cv_ld_large_toc=yes
6551 rm -f conftest conftest.o conftest.s
6554 if test x"$gcc_cv_ld_large_toc" = xyes; then
6555 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
6556 [Define if your PowerPC64 linker supports a large TOC.])
6559 AC_CACHE_CHECK(linker toc pointer alignment,
6560 gcc_cv_ld_toc_align,
6561 [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then
6562 cat > conftest.s <<EOF
6567 .section .data.rel.ro,"aw",@progbits
6572 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
6573 && $gcc_cv_ld $emul_name -z norelro -o conftest conftest.o > /dev/null 2>&1; then
6574 gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'`
6576 rm -f conftest conftest.o conftest.s
6579 if test -n "$gcc_cv_ld_toc_align" && test $gcc_cv_ld_toc_align -gt 8; then
6580 AC_DEFINE_UNQUOTED(POWERPC64_TOC_POINTER_ALIGNMENT, $gcc_cv_ld_toc_align,
6581 [Define to .TOC. alignment forced by your linker.])
6588 AC_CACHE_CHECK(linker large toc support,
6589 gcc_cv_ld_large_toc,
6590 [gcc_cv_ld_large_toc=no
6591 if test x$gcc_cv_as != x ; then
6592 cat > conftest.s <<EOF
6602 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
6603 gcc_cv_ld_large_toc=yes
6605 rm -f conftest conftest.o conftest.s
6608 if test x"$gcc_cv_ld_large_toc" = xyes; then
6609 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
6610 [Define if your PowerPC64 linker supports a large TOC.])
6615 AC_CACHE_CHECK(linker --build-id support,
6617 [gcc_cv_ld_buildid=no
6618 if test $in_tree_ld = yes ; then
6619 if test "$gcc_cv_gld_major_version" -eq 2 -a \
6620 "$gcc_cv_gld_minor_version" -ge 18 -o \
6621 "$gcc_cv_gld_major_version" -gt 2 \
6622 && test $in_tree_ld_is_elf = yes; then
6623 gcc_cv_ld_buildid=yes
6625 elif test x$gcc_cv_ld != x; then
6626 if $gcc_cv_ld --help 2>&1 | grep build-id > /dev/null; then
6627 gcc_cv_ld_buildid=yes
6630 if test x"$gcc_cv_ld_buildid" = xyes; then
6631 AC_DEFINE(HAVE_LD_BUILDID, 1,
6632 [Define if your linker supports --build-id.])
6635 AC_ARG_ENABLE(linker-build-id,
6636 [AS_HELP_STRING([--enable-linker-build-id],
6637 [compiler will always pass --build-id to linker])],
6639 enable_linker_build_id=no)
6641 if test x"$enable_linker_build_id" = xyes; then
6642 if test x"$gcc_cv_ld_buildid" = xyes; then
6643 AC_DEFINE(ENABLE_LD_BUILDID, 1,
6644 [Define if gcc should always pass --build-id to linker.])
6646 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
6650 # In binutils 2.21, GNU ld gained support for new emulations fully
6651 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
6652 AC_CACHE_CHECK(linker *_sol2 emulation support,
6653 gcc_cv_ld_sol2_emulation,
6654 [gcc_cv_ld_sol2_emulation=no
6655 if test $in_tree_ld = yes ; then
6656 if test "$gcc_cv_gld_major_version" -eq 2 -a \
6657 "$gcc_cv_gld_minor_version" -ge 21 -o \
6658 "$gcc_cv_gld_major_version" -gt 2 \
6659 && test $in_tree_ld_is_elf = yes; then
6660 gcc_cv_ld_sol2_emulation=yes
6662 elif test x$gcc_cv_ld != x; then
6663 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
6664 grep _sol2 > /dev/null; then
6665 gcc_cv_ld_sol2_emulation=yes
6668 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
6669 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
6670 [Define if your linker supports the *_sol2 emulations.])
6673 AC_CACHE_CHECK(linker --sysroot support,
6675 [gcc_cv_ld_sysroot=no
6676 if test $in_tree_ld = yes ; then
6677 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
6678 gcc_cv_ld_sysroot=yes
6680 elif test x$gcc_cv_ld != x; then
6681 if $gcc_cv_ld --help 2>&1 | grep sysroot > /dev/null; then
6682 gcc_cv_ld_sysroot=yes
6685 if test x"$gcc_cv_ld_sysroot" = xyes; then
6686 AC_DEFINE(HAVE_LD_SYSROOT, 1,
6687 [Define if your linker supports --sysroot.])
6692 # Check for system-provided CRTs on Solaris 11.x and Solaris 12.
6693 AC_CACHE_CHECK([system-provided CRTs on Solaris],
6694 gcc_cv_solaris_crts,
6695 [gcc_cv_solaris_crts=no
6696 if test x$host != x$target; then
6697 if test "x$with_sysroot" = xyes; then
6698 target_sysroot="${test_exec_prefix}/${target_noncanonical}/sys-root"
6700 target_sysroot="${with_sysroot}"
6703 target_libdir="$target_sysroot/usr/lib"
6704 # At the time they were added, gcrt1.o became a symlink for backwards
6705 # compatibility on x86, while crt1.o was added on sparc, so check for that.
6707 i?86-*-solaris2* | x86_64-*-solaris2*)
6708 if test -h "$target_libdir/gcrt1.o"; then gcc_cv_solaris_crts=yes; fi
6711 if test -f "$target_libdir/crt1.o"; then gcc_cv_solaris_crts=yes; fi
6716 if test x$gcc_cv_solaris_crts = xyes; then
6717 AC_DEFINE(HAVE_SOLARIS_CRTS, 1,
6718 [Define if the system-provided CRTs are present on Solaris.])
6721 AC_ARG_ENABLE(libssp,
6722 [AS_HELP_STRING([--enable-libssp], [enable linking against libssp])],
6723 [case "${enableval}" in
6727 AC_MSG_ERROR([unknown libssp setting $enableval])
6731 # Test for stack protector support in target C library.
6732 AC_CACHE_CHECK(__stack_chk_fail in target C library,
6733 gcc_cv_libc_provides_ssp,
6734 [gcc_cv_libc_provides_ssp=no
6735 if test "x$enable_libssp" = "xno"; then
6736 gcc_cv_libc_provides_ssp=yes
6737 elif test "x$enable_libssp" = "xyes"; then
6738 gcc_cv_libc_provides_ssp=no
6742 # All versions of musl provide stack protector
6743 gcc_cv_libc_provides_ssp=yes;;
6744 *-*-linux* | *-*-kfreebsd*-gnu)
6745 # glibc 2.4 and later provides __stack_chk_fail and
6746 # either __stack_chk_guard, or TLS access to stack guard canary.
6747 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
6748 [if test -f $target_header_dir/features.h \
6749 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
6750 $target_header_dir/features.h > /dev/null; then
6751 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
6752 $target_header_dir/features.h > /dev/null && \
6753 test -f $target_header_dir/bits/uClibc_config.h && \
6754 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
6755 $target_header_dir/bits/uClibc_config.h > /dev/null; then
6756 gcc_cv_libc_provides_ssp=yes
6758 # all versions of Bionic support stack protector
6759 elif test -f $target_header_dir/sys/cdefs.h \
6760 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
6761 $target_header_dir/sys/cdefs.h > /dev/null; then
6762 gcc_cv_libc_provides_ssp=yes
6766 # Avoid complicated tests (see
6767 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
6768 # simply assert that glibc does provide this, which is true for all
6769 # realistically usable GNU/Hurd configurations.
6770 # All supported versions of musl provide it as well
6771 gcc_cv_libc_provides_ssp=yes;;
6772 *-*-darwin* | *-*-freebsd* | *-*-netbsd*)
6773 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
6774 [echo "no __stack_chk_fail on this target"])
6776 *) gcc_cv_libc_provides_ssp=no ;;
6780 if test x$gcc_cv_libc_provides_ssp = xyes; then
6781 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
6782 [Define if your target C library provides stack protector support])
6785 # Check whether --enable-default-ssp was given.
6786 AC_ARG_ENABLE(default-ssp,
6787 [AS_HELP_STRING([--enable-default-ssp],
6788 [enable Stack Smashing Protection as default])],[
6789 if test x$gcc_cv_libc_provides_ssp = xyes; then
6791 ia64*-*-*) enable_default_ssp=no ;;
6792 *) enable_default_ssp=$enableval ;;
6795 enable_default_ssp=no
6797 enable_default_ssp=no)
6798 if test x$enable_default_ssp = xyes ; then
6799 AC_DEFINE(ENABLE_DEFAULT_SSP, 1,
6800 [Define if your target supports default stack protector and it is enabled.])
6802 AC_SUBST([enable_default_ssp])
6804 # Test for <sys/sdt.h> on the target.
6805 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
6806 AC_CACHE_CHECK([sys/sdt.h in the target C library], [gcc_cv_sys_sdt_h], [
6808 if test -f $target_header_dir/sys/sdt.h; then
6809 gcc_cv_sys_sdt_h=yes
6812 AS_IF([test x$gcc_cv_sys_sdt_h = xyes], [
6813 AC_DEFINE([HAVE_SYS_SDT_H], [1],
6814 [Define if your target C library provides sys/sdt.h])
6817 # Check if TFmode long double should be used by default or not.
6818 # Some glibc targets used DFmode long double, but with glibc 2.4
6819 # and later they can use TFmode.
6821 powerpc*-*-linux* | \
6825 AC_ARG_WITH(long-double-128,
6826 [AS_HELP_STRING([--with-long-double-128],
6827 [use 128-bit long double by default])],
6828 gcc_cv_target_ldbl128="$with_long_double_128", [
6830 s390*-*-linux-musl*)
6831 gcc_cv_target_ldbl128=yes
6833 powerpc*-*-linux-musl*)
6834 gcc_cv_target_ldbl128=no
6837 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
6838 [gcc_cv_target_ldbl128=no
6839 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
6840 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
6841 && gcc_cv_target_ldbl128=yes
6849 if test x$gcc_cv_target_ldbl128 = xyes; then
6850 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
6851 [Define if TFmode long double should be the default])
6854 # Check if TFmode long double target should use the IBM extended double or IEEE
6855 # 128-bit floating point formats if long doubles are 128-bits long. The long
6856 # double type can only be switched on powerpc64 bit Linux systems where VSX is
6857 # supported. Other PowerPC systems do not build the IEEE 128-bit emulator in
6859 AC_ARG_WITH([long-double-format],
6860 [AS_HELP_STRING([--with-long-double-format={ieee,ibm}]
6861 [Specify whether PowerPC long double uses IEEE or IBM format])],[
6862 case "$target:$with_long_double_format" in
6863 powerpc64le-*-linux*:ieee | powerpc64le-*-linux*:ibm)
6866 powerpc64-*-linux*:ieee | powerpc64-*-linux*:ibm)
6867 # IEEE 128-bit emulation is only built on 64-bit VSX Linux systems
6869 power7 | power8 | power9 | power1*)
6873 AC_MSG_ERROR([Configuration option --with-long-double-format is only \
6874 supported if the default cpu is power7 or newer])
6875 with_long_double_format=""
6879 powerpc64*-*-linux*:*)
6880 AC_MSG_ERROR([--with-long-double-format argument should be ibm or ieee])
6881 with_long_double_format=""
6884 AC_MSG_ERROR([Configure option --with-long-double-format is only supported \
6885 on 64-bit PowerPC VSX Linux systems])
6886 with_long_double_format=""
6891 # Check if the target LIBC supports exporting the AT_PLATFORM and AT_HWCAP
6892 # values in the TCB. Currently, only GLIBC 2.23 and later support this.
6893 gcc_cv_libc_provides_hwcap_in_tcb=no
6896 GCC_GLIBC_VERSION_GTE_IFELSE([2], [23], [gcc_cv_libc_provides_hwcap_in_tcb=yes], )
6899 if test x$gcc_cv_libc_provides_hwcap_in_tcb = xyes; then
6900 AC_DEFINE(TARGET_LIBC_PROVIDES_HWCAP_IN_TCB, 1,
6901 [Define if your target C Library provides the AT_HWCAP value in the TCB])
6904 # Check if the target LIBC handles PT_GNU_STACK.
6905 gcc_cv_libc_gnustack=unknown
6907 mips*-*-linux-musl*)
6908 gcc_cv_libc_gnustack=yes
6911 GCC_GLIBC_VERSION_GTE_IFELSE([2], [31], [gcc_cv_libc_gnustack=yes], )
6914 if test x$gcc_cv_libc_gnustack = xyes; then
6915 AC_DEFINE(TARGET_LIBC_GNUSTACK, 1,
6916 [Define if your target C Library properly handles PT_GNU_STACK])
6919 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
6920 gcc_cv_target_dl_iterate_phdr=unknown
6923 # <link.h> needs both a dl_iterate_phdr declaration and support for
6924 # compilation with largefile support.
6925 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
6926 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
6927 gcc_cv_target_dl_iterate_phdr=yes
6929 gcc_cv_target_dl_iterate_phdr=no
6932 *-*-dragonfly* | *-*-freebsd*)
6933 if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then
6934 gcc_cv_target_dl_iterate_phdr=yes
6936 gcc_cv_target_dl_iterate_phdr=no
6940 gcc_cv_target_dl_iterate_phdr=yes
6943 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
6944 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
6945 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
6946 [Define if your target C library provides the `dl_iterate_phdr' function.])
6948 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
6950 # We no longer support different GC mechanisms. Emit an error if
6951 # the user configures with --with-gc.
6953 [AS_HELP_STRING([--with-gc={page,zone}],
6954 [this option is not supported anymore. It used to choose
6955 the garbage collection mechanism to use with the compiler])],
6956 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
6959 # Libraries to use on the host. This will normally be set by the top
6960 # level Makefile. Here we simply capture the value for our Makefile.
6961 if test -z "${HOST_LIBS+set}"; then
6966 # Use the system's zlib library.
6969 dnl Very limited version of automake's enable-maintainer-mode
6971 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
6972 dnl maintainer-mode is disabled by default
6973 AC_ARG_ENABLE(maintainer-mode,
6974 [AS_HELP_STRING([--enable-maintainer-mode],
6975 [enable make rules and dependencies not useful
6976 (and sometimes confusing) to the casual installer])],
6977 maintainer_mode=$enableval,
6980 AC_MSG_RESULT($maintainer_mode)
6982 if test "$maintainer_mode" = "yes"; then
6989 dnl Variables for tags utilities; copied from automake 1.16.4+'s init.m4
6990 if test -z "$CTAGS"; then
6994 if test -z "$ETAGS"; then
6998 if test -z "$CSCOPE"; then
7003 dnl Whether to prevent multiple front-ends from linking at the same time
7005 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
7006 AC_ARG_ENABLE(link-mutex,
7007 [AS_HELP_STRING([--enable-link-mutex],
7008 [avoid linking multiple front-ends at once to avoid thrashing
7009 on the build machine])],
7010 do_link_mutex=$enableval,
7012 AC_MSG_RESULT($do_link_mutex)
7014 if test "$do_link_mutex" = "yes"; then
7016 AC_MSG_WARN([--enable-link-mutex is deprecated and will be removed in the next release, use --enable-link-serialization instead])
7020 AC_SUBST(DO_LINK_MUTEX)
7022 dnl Whether to prevent multiple GCC front-ends from linking at the same time
7024 AC_MSG_CHECKING([whether to serialize linking of multiple front-ends])
7025 AC_ARG_ENABLE(link-serialization,
7026 [AS_HELP_STRING([--enable-link-serialization],
7027 [avoid linking multiple GCC front-ends at once using make
7028 dependencies to avoid thrashing on the build machine])],
7029 do_link_serialization=$enableval,
7030 do_link_serialization=no)
7031 AC_MSG_RESULT($do_link_serialization)
7033 case "$do_link_serialization" in
7035 DO_LINK_SERIALIZATION=1;;
7036 [[1-9]] | [[1-9]][[0-9]] | [[1-9]][[0-9]][[0-9]])
7037 DO_LINK_SERIALIZATION=$do_link_serialization;;
7039 DO_LINK_SERIALIZATION=;;
7041 AC_MSG_ERROR(bad value ${do_link_serialization} given for --enable-link-serialization) ;;
7043 AC_SUBST(DO_LINK_SERIALIZATION)
7049 # Make empty files to contain the specs and options for each language.
7050 # Then add #include lines to for a compiler that has specs and/or options.
7056 # These (without "all_") are set in each config-lang.in.
7057 # `language' must be a single word so is spelled singularly.
7060 all_outputs='Makefile'
7061 # List of language configure and makefile fragments.
7062 all_lang_configurefrags=
7064 # Additional files for gengtype
7065 all_gtfiles="$target_gtfiles"
7067 # These are the languages that are set in --enable-languages,
7068 # and are available in the GCC tree.
7069 all_selected_languages=
7071 # Add the language fragments.
7072 # Languages are added via two mechanisms. Some information must be
7073 # recorded in makefile variables, these are defined in config-lang.in.
7074 # We accumulate them and plug them into the main Makefile.
7075 # The other mechanism is a set of hooks for each of the main targets
7076 # like `clean', `install', etc.
7078 language_hooks="Make-hooks"
7080 for lang in ${srcdir}/*/config-lang.in
7083 test "$lang" = "${srcdir}/*/config-lang.in" && continue
7085 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
7086 if test "x$lang_alias" = x
7088 echo "$lang doesn't set \$language." 1>&2
7091 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
7092 subdirs="$subdirs $subdir"
7094 # $gcc_subdir is where the gcc integration files are to be found
7095 # for a language, both for internal compiler purposes (compiler
7096 # sources implementing front-end to GCC tree converters), and for
7097 # build infrastructure purposes (Make-lang.in, etc.)
7099 # This will be <subdir> (relative to $srcdir) if a line like
7100 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
7101 # is found in <langdir>/config-lang.in, and will remain <langdir>
7104 # Except for the language alias (fetched above), the regular
7105 # "config-lang.in" contents are always retrieved from $gcc_subdir,
7106 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
7107 # only this and the language alias.
7109 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
7110 if [ "$gcc_subdir" = "" ]; then
7111 gcc_subdir="$subdir"
7114 case ",$enable_languages," in
7116 all_selected_languages="$all_selected_languages $lang_alias"
7117 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
7118 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
7130 . ${srcdir}/$gcc_subdir/config-lang.in
7131 if test "x$language" = x
7133 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
7138 case ",$enable_languages," in
7141 for i in $subdir_requires; do
7142 test -f "${srcdir}/$i/config-lang.in" && continue
7150 all_lang_configurefrags="$all_lang_configurefrags \$(srcdir)/$gcc_subdir/config-lang.in"
7151 if test "x$language" = xc && test -n "$all_lang_makefrags"; then
7152 # Put c/Make-lang.in fragment first to match serialization languages order.
7153 all_lang_makefrags="\$(srcdir)/$gcc_subdir/Make-lang.in $all_lang_makefrags"
7155 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
7157 if test -f $srcdir/$gcc_subdir/lang.opt; then
7158 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
7159 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
7161 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
7162 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
7164 all_languages="$all_languages $language"
7165 all_compilers="$all_compilers $compilers"
7166 all_outputs="$all_outputs $outputs"
7167 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
7168 case ",$enable_languages," in
7170 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
7172 AC_SUBST(enable_lto)
7179 for language in $all_selected_languages
7181 check_languages="$check_languages check-$language"
7185 for language in $all_selected_languages
7187 selftest_languages="$selftest_languages selftest-$language"
7190 # We link each language in with a set of hooks, reached indirectly via
7191 # lang.${target}. Only do so for selected languages.
7195 target_list="all.cross start.encap rest.encap tags \
7196 install-common install-man install-info install-dvi install-pdf \
7197 install-html dvi pdf html uninstall info man srcextra srcman srcinfo \
7198 mostlyclean clean distclean maintainer-clean install-plugin"
7200 for t in $target_list
7203 for lang in $all_selected_languages
7207 echo "lang.$t: $x" >> Make-hooks
7210 echo "ifeq (\$(DO_LINK_SERIALIZATION),)" >> Make-hooks
7211 echo "SERIAL_LIST =" >> Make-hooks
7212 echo else >> Make-hooks
7216 serialization_languages=c
7217 for lang in $all_selected_languages
7219 test $lang = c && continue
7220 if test $lang = lto; then
7221 serialization_languages="$serialization_languages lto1 lto2"
7223 serialization_languages="$serialization_languages $lang"
7226 for lang in $serialization_languages
7228 test $lang = c && continue
7229 lang_cnt=`expr $lang_cnt + 1`
7230 lang_list=" $prev$lang_list"
7233 echo "SERIAL_LIST = \$(wordlist \$(DO_LINK_SERIALIZATION),$lang_cnt,$lang_list)" >> Make-hooks
7234 echo endif >> Make-hooks
7235 echo "SERIAL_COUNT = `expr $lang_cnt + 1`" >> Make-hooks
7236 echo "INDEX.c = 0" >> Make-hooks
7238 for lang in $serialization_languages
7240 test $lang = c && continue
7241 echo "$lang.prev = \$(if \$(word $lang_cnt,\$(SERIAL_LIST)),\$(\$(word $lang_cnt,\$(SERIAL_LIST)).serial))" >> Make-hooks
7242 echo "INDEX.$lang = $lang_idx" >> Make-hooks
7243 lang_cnt=`expr $lang_cnt - 1`
7244 lang_idx=`expr $lang_idx + 1`
7248 # Option include files
7251 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
7252 option_includes="option-includes.mk"
7253 AC_SUBST_FILE(option_includes)
7261 echo "dir ." > .gdbinit
7262 echo "dir ${srcdir}" >> .gdbinit
7263 if test x$gdb_needs_out_file_path = xyes
7265 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
7267 if test "x$subdirs" != x; then
7270 echo "dir ${srcdir}/$s" >> .gdbinit
7273 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
7274 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
7276 # Put a breakpoint on __asan_report_error to help with debugging buffer
7279 *-fsanitize=address*)
7280 echo "source ${srcdir}/gdbasan.in" >> .gdbinit
7284 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
7285 AC_SUBST(gcc_tooldir)
7288 # Find a directory in which to install a shared libgcc.
7290 AC_ARG_ENABLE(version-specific-runtime-libs,
7291 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
7292 [specify that runtime libraries should be
7293 installed in a compiler-specific directory])])
7295 # Substitute configuration variables
7298 AC_SUBST(all_compilers)
7299 AC_SUBST(all_gtfiles)
7300 AC_SUBST(all_lang_configurefrags)
7301 AC_SUBST(all_lang_makefrags)
7302 AC_SUBST(all_languages)
7303 AC_SUBST(all_selected_languages)
7304 AC_SUBST(build_exeext)
7305 AC_SUBST(build_install_headers_dir)
7306 AC_SUBST(build_xm_file_list)
7307 AC_SUBST(build_xm_include_list)
7308 AC_SUBST(build_xm_defines)
7309 AC_SUBST(build_file_translate)
7310 AC_SUBST(check_languages)
7311 AC_SUBST(selftest_languages)
7312 AC_SUBST(cpp_install_dir)
7313 AC_SUBST(xmake_file)
7314 AC_SUBST(tmake_file)
7315 AC_SUBST(TM_ENDIAN_CONFIG)
7316 AC_SUBST(TM_MULTILIB_CONFIG)
7317 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
7318 AC_SUBST(extra_gcc_objs)
7319 AC_SUBST(user_headers_inc_next_pre)
7320 AC_SUBST(user_headers_inc_next_post)
7321 AC_SUBST(extra_headers_list)
7322 AC_SUBST(extra_objs)
7323 AC_SUBST(extra_programs)
7324 AC_SUBST(float_h_file)
7325 AC_SUBST(gcc_config_arguments)
7326 AC_SUBST(gcc_gxx_include_dir)
7327 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
7328 AC_SUBST(gcc_gxx_libcxx_include_dir)
7329 AC_SUBST(gcc_gxx_libcxx_include_dir_add_sysroot)
7330 AC_SUBST(host_exeext)
7331 AC_SUBST(host_xm_file_list)
7332 AC_SUBST(host_xm_include_list)
7333 AC_SUBST(host_xm_defines)
7334 AC_SUBST(out_host_hook_obj)
7336 AC_SUBST(lang_opt_files)
7337 AC_SUBST(lang_specs_files)
7338 AC_SUBST(lang_tree_files)
7339 AC_SUBST(local_prefix)
7341 AC_SUBST(objc_boehm_gc)
7343 AC_SUBST(out_object_file)
7344 AC_SUBST(common_out_file)
7345 AC_SUBST(common_out_object_file)
7346 AC_SUBST(tm_file_list)
7347 AC_SUBST(tm_include_list)
7348 AC_SUBST(tm_defines)
7349 AC_SUBST(tm_p_file_list)
7350 AC_SUBST(tm_p_include_list)
7351 AC_SUBST(tm_d_file_list)
7352 AC_SUBST(tm_d_include_list)
7353 AC_SUBST(xm_file_list)
7354 AC_SUBST(xm_include_list)
7355 AC_SUBST(xm_defines)
7356 AC_SUBST(use_gcc_stdint)
7357 AC_SUBST(c_target_objs)
7358 AC_SUBST(cxx_target_objs)
7359 AC_SUBST(fortran_target_objs)
7360 AC_SUBST(d_target_objs)
7361 AC_SUBST(target_cpu_default)
7363 AC_SUBST_FILE(language_hooks)
7366 if test x${build} = x${host} ; then
7367 if test x${host} = x${target} ; then
7368 echo "Links are now set up to build a native compiler for ${target}." 1>&2
7370 echo "Links are now set up to build a cross-compiler" 1>&2
7371 echo " from ${host} to ${target}." 1>&2
7374 if test x${host} = x${target} ; then
7375 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
7376 echo " for ${target}." 1>&2
7378 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
7379 echo " from ${host} to ${target}." 1>&2
7383 AC_ARG_VAR(GMPLIBS,[How to link GMP])
7384 AC_ARG_VAR(GMPINC,[How to find GMP include files])
7386 AC_ARG_VAR(ISLLIBS,[How to link isl])
7387 AC_ARG_VAR(ISLINC,[How to find isl include files])
7388 if test "x${ISLLIBS}" != "x" ; then
7389 AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.])
7393 AC_SUBST(pluginlibs)
7394 AC_SUBST(enable_plugin)
7395 if test x"$enable_plugin" = x"yes"; then
7396 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
7400 # Enable --enable-host-shared
7401 AC_ARG_ENABLE(host-shared,
7402 [AS_HELP_STRING([--enable-host-shared],
7403 [build host code as shared libraries])],
7404 [PICFLAG=-fPIC], [PICFLAG=])
7405 AC_SUBST(enable_host_shared)
7409 AC_ARG_ENABLE(libquadmath-support,
7410 [AS_HELP_STRING([--disable-libquadmath-support],
7411 [disable libquadmath support for Fortran])],
7412 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
7413 ENABLE_LIBQUADMATH_SUPPORT=yes)
7414 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
7415 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
7416 [Define to 1 to enable libquadmath support])
7420 # Specify what hash style to use by default.
7421 AC_ARG_WITH([linker-hash-style],
7422 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
7423 [specify the linker hash style])],
7424 [case x"$withval" in
7426 LINKER_HASH_STYLE=sysv
7429 LINKER_HASH_STYLE=gnu
7432 LINKER_HASH_STYLE=both
7435 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
7438 [LINKER_HASH_STYLE=''])
7439 if test x"${LINKER_HASH_STYLE}" != x; then
7440 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
7441 [The linker hash style])
7444 # Specify what should be the default of -fdiagnostics-color option.
7445 AC_ARG_WITH([diagnostics-color],
7446 [AC_HELP_STRING([--with-diagnostics-color={never,auto,auto-if-env,always}],
7447 [specify the default of -fdiagnostics-color option
7448 auto-if-env stands for -fdiagnostics-color=auto if
7449 GCC_COLOR environment variable is present and
7450 -fdiagnostics-color=never otherwise])],
7451 [case x"$withval" in
7453 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_NO
7456 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO
7459 DIAGNOSTICS_COLOR_DEFAULT=-1
7462 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_YES
7465 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-color])
7468 [DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO])
7469 AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT,
7470 [The default for -fdiagnostics-color option])
7472 # Specify what should be the default of -fdiagnostics-urls option.
7473 AC_ARG_WITH([diagnostics-urls],
7474 [AC_HELP_STRING([--with-diagnostics-urls={never,auto,auto-if-env,always}],
7475 [specify the default of -fdiagnostics-urls option
7476 auto-if-env stands for -fdiagnostics-urls=auto if
7477 GCC_URLS or TERM_URLS environment variable is present and
7478 -fdiagnostics-urls=never otherwise])],
7479 [case x"$withval" in
7481 DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_NO
7484 DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_AUTO
7487 DIAGNOSTICS_URLS_DEFAULT=-1
7490 DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_YES
7493 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-urls])
7496 [DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_AUTO])
7497 AC_DEFINE_UNQUOTED(DIAGNOSTICS_URLS_DEFAULT, $DIAGNOSTICS_URLS_DEFAULT,
7498 [The default for -fdiagnostics-urls option])
7500 # Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit
7501 # of jit/jit-playback.cc.
7502 gcc_driver_version=`eval "${get_gcc_base_ver} $srcdir/BASE-VER"`
7503 echo "gcc_driver_version: ${gcc_driver_version}"
7504 cat > gcc-driver-name.h <<EOF
7505 #define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_driver_version}${exeext}"
7508 # Check whether --enable-default-pie was given.
7509 AC_ARG_ENABLE(default-pie,
7510 [AS_HELP_STRING([--enable-default-pie],
7511 [enable Position Independent Executable as default])],
7512 enable_default_pie=$enableval,
7513 enable_default_pie=no)
7514 if test x$enable_default_pie = xyes ; then
7515 AC_DEFINE(ENABLE_DEFAULT_PIE, 1,
7516 [Define if your target supports default PIE and it is enabled.])
7518 AC_SUBST([enable_default_pie])
7520 # Check if -fno-PIE works.
7521 AC_CACHE_CHECK([for -fno-PIE option],
7523 [saved_CXXFLAGS="$CXXFLAGS"
7524 CXXFLAGS="$CXXFLAGS -fno-PIE"
7525 AC_COMPILE_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
7526 [gcc_cv_c_no_fpie=yes],
7527 [gcc_cv_c_no_fpie=no])
7528 CXXFLAGS="$saved_CXXFLAGS"])
7529 if test "$gcc_cv_c_no_fpie" = "yes"; then
7530 NO_PIE_CFLAGS="-fno-PIE"
7532 AC_SUBST([NO_PIE_CFLAGS])
7534 # Check if -no-pie works.
7535 AC_CACHE_CHECK([for -no-pie option],
7537 [saved_LDFLAGS="$LDFLAGS"
7538 LDFLAGS="$LDFLAGS -no-pie"
7539 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
7540 [gcc_cv_no_pie=yes],
7542 LDFLAGS="$saved_LDFLAGS"])
7543 if test "$gcc_cv_no_pie" = "yes"; then
7544 NO_PIE_FLAG="-no-pie"
7546 AC_SUBST([NO_PIE_FLAG])
7548 # Enable Intel CET on Intel CET enabled host if jit is enabled.
7549 GCC_CET_HOST_FLAGS(CET_HOST_FLAGS)
7550 case x$enable_languages in
7557 AC_SUBST(CET_HOST_FLAGS)
7559 # Check linker supports '-z bndplt'
7560 ld_bndplt_support=no
7561 AC_MSG_CHECKING(linker -z bndplt option)
7562 if test x"$ld_is_gold" = xno; then
7563 if test $in_tree_ld = yes ; then
7564 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
7565 ld_bndplt_support=yes
7567 elif test x$gcc_cv_ld != x; then
7568 # Check if linker supports -a bndplt option
7569 if $gcc_cv_ld --help 2>&1 | grep -- '-z bndplt' > /dev/null; then
7570 ld_bndplt_support=yes
7574 if test x"$ld_bndplt_support" = xyes; then
7575 AC_DEFINE(HAVE_LD_BNDPLT_SUPPORT, 1,
7576 [Define if your linker supports -z bndplt])
7578 AC_MSG_RESULT($ld_bndplt_support)
7580 # Check linker supports '--push-state'/'--pop-state'
7581 ld_pushpopstate_support=no
7582 AC_MSG_CHECKING(linker --push-state/--pop-state options)
7583 if test x"$ld_is_gold" = xno; then
7584 if test $in_tree_ld = yes ; then
7585 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
7586 ld_pushpopstate_support=yes
7588 elif test x$gcc_cv_ld != x; then
7589 # Check if linker supports --push-state/--pop-state options
7590 if $gcc_cv_ld --help 2>&1 | grep -- '--push-state' > /dev/null; then
7591 ld_pushpopstate_support=yes
7595 if test x"$ld_pushpopstate_support" = xyes; then
7596 AC_DEFINE(HAVE_LD_PUSHPOPSTATE_SUPPORT, 1,
7597 [Define if your linker supports --push-state/--pop-state])
7599 AC_MSG_RESULT($ld_pushpopstate_support)
7601 # On s390, float_t has historically been statically defined as double for no
7602 # good reason. To comply with the C standard in the light of this definition,
7603 # gcc has evaluated float expressions in double precision when in
7604 # standards-compatible mode or when given -fexcess-precision=standard. To enable
7605 # a smooth transition towards the new model used by most architectures, where
7606 # gcc describes its behavior via the macro __FLT_EVAL_METHOD__ and glibc derives
7607 # float_t from that, this behavior can be configured with
7608 # --enable-s390-excess-float-precision. When given as enabled, that flag selects
7609 # the old model. When omitted, native builds and cross compiles that have target
7610 # libc headers will detect whether libc clamps float_t to double and in that
7611 # case maintain the old model. Otherwise, they will default to the new model.
7612 AC_ARG_ENABLE(s390-excess-float-precision,
7613 [AS_HELP_STRING([--enable-s390-excess-float-precision],
7614 [on s390 targets, evaluate float with double precision
7615 when in standards-conforming mode])],
7616 [],[enable_s390_excess_float_precision=auto])
7620 if test x"$enable_s390_excess_float_precision" = xauto; then
7621 # Can we autodetect the behavior of the target libc?
7622 if test "$target" = "$host" -a "$host" = "$build"; then
7623 enable_s390_excess_float_precision=autodetect
7624 elif test "x$with_headers" != xno; then
7625 # cross build. are target headers available?
7626 # carefully coerce the build-system compiler to use target headers
7627 saved_CXXFLAGS="$CXXFLAGS"
7628 fixed_XGCC_FLAGS_FOR_TARGET=`echo "$XGCC_FLAGS_FOR_TARGET" | sed 's/-B/-idirafter/g'`
7629 CROSS_TEST_CXXFLAGS="-nostdinc $fixed_XGCC_FLAGS_FOR_TARGET"
7630 CXXFLAGS="$CROSS_TEST_CXXFLAGS"
7631 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
7633 ]])], [enable_s390_excess_float_precision=autodetect], [])
7634 CXXFLAGS="$saved_CXXFLAGS"
7637 if test x"$enable_s390_excess_float_precision" = xautodetect; then
7638 saved_CXXFLAGS="$CXXFLAGS"
7639 if ! test "$target" = "$host" -a "$host" = "$build"; then
7640 CXXFLAGS="$CROSS_TEST_CXXFLAGS"
7641 unset CROSS_TEST_CXXFLAGS
7643 AC_CACHE_CHECK([for glibc clamping float_t to double],
7644 gcc_cv_float_t_clamped_to_double, [
7645 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
7646 #define __FLT_EVAL_METHOD__ 0
7648 int dummy[sizeof(float_t) == sizeof(double) ? 1 : -1];
7650 [gcc_cv_float_t_clamped_to_double=yes],
7651 [gcc_cv_float_t_clamped_to_double=no])])
7652 CXXFLAGS="$saved_CXXFLAGS"
7653 enable_s390_excess_float_precision="$gcc_cv_float_t_clamped_to_double"
7655 # no way to detect behavior of target libc, default to new model
7656 enable_s390_excess_float_precision=no
7660 GCC_TARGET_TEMPLATE(ENABLE_S390_EXCESS_FLOAT_PRECISION)
7661 if test x"$enable_s390_excess_float_precision" = xyes; then
7662 AC_DEFINE(ENABLE_S390_EXCESS_FLOAT_PRECISION, 1,
7663 [Define to enable evaluating float expressions with double precision in
7664 standards-compatible mode on s390 targets.])
7669 # Configure the subdirectories
7670 # AC_CONFIG_SUBDIRS($subdirs)
7672 # Create the Makefile
7673 # and configure language subdirectories
7674 AC_CONFIG_FILES($all_outputs)
7676 AC_CONFIG_COMMANDS([default],
7678 case ${CONFIG_HEADERS} in
7679 *auto-host.h:config.in*)
7682 # Make sure all the subdirs exist.
7683 for d in $subdirs doc build common c-family
7685 test -d $d || mkdir $d
7688 [subdirs='$subdirs'])