2 # Process this file with autoconf to generate a configuration script.
4 # Copyright (C) 1997-2021 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.c)
28 AC_CONFIG_HEADER(auto-host.h:config.in)
30 gcc_version=`cat $srcdir/BASE-VER`
32 # Determine the host, build, and target systems
37 # Determine the noncanonical host name, for Ada.
40 # Determine the noncanonical target name, for directory use.
41 ACX_NONCANONICAL_TARGET
43 # Used for constructing correct paths for offload compilers.
44 real_target_noncanonical=${target_noncanonical}
47 # Determine the target- and build-specific subdirectories
50 # Set program_transform_name
53 # Check for bogus environment variables.
54 # Test if LIBRARY_PATH contains the notation for the current directory
55 # since this would lead to problems installing/building glibc.
56 # LIBRARY_PATH contains the current directory if one of the following
58 # - one of the terminals (":" and ";") is the first or last sign
59 # - two terminals occur directly after each other
60 # - the path contains an element with a dot in it
61 AC_MSG_CHECKING(LIBRARY_PATH variable)
63 case ${LIBRARY_PATH} in
64 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
65 library_path_setting="contains current directory"
68 library_path_setting="ok"
72 AC_MSG_RESULT($library_path_setting)
73 if test "$library_path_setting" != "ok"; then
75 *** LIBRARY_PATH shouldn't contain the current directory when
76 *** building gcc. Please change the environment variable
77 *** and run configure again.])
80 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
81 # since this would lead to problems installing/building glibc.
82 # GCC_EXEC_PREFIX contains the current directory if one of the following
84 # - one of the terminals (":" and ";") is the first or last sign
85 # - two terminals occur directly after each other
86 # - the path contains an element with a dot in it
87 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
89 case ${GCC_EXEC_PREFIX} in
90 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
91 gcc_exec_prefix_setting="contains current directory"
94 gcc_exec_prefix_setting="ok"
98 AC_MSG_RESULT($gcc_exec_prefix_setting)
99 if test "$gcc_exec_prefix_setting" != "ok"; then
101 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
102 *** building gcc. Please change the environment variable
103 *** and run configure again.])
110 # Specify the local prefix
112 AC_ARG_WITH(local-prefix,
113 [AS_HELP_STRING([--with-local-prefix=DIR],
114 [specifies directory to put local include])],
115 [case "${withval}" in
116 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
118 *) local_prefix=$with_local_prefix ;;
121 # Default local prefix if it is empty
122 if test x$local_prefix = x; then
123 local_prefix=/usr/local
126 AC_ARG_WITH([native-system-header-dir],
127 [ --with-native-system-header-dir=dir
128 use dir as the directory to look for standard
129 system header files in. Defaults to /usr/include.],
131 case ${with_native_system_header_dir} in
132 yes|no) AC_MSG_ERROR([bad value ${withval} given for --with-native-system-header-dir]) ;;
133 /* | [[A-Za-z]]:[[\\/]]*) ;;
134 *) AC_MSG_ERROR([--with-native-system-header-dir argument ${withval} must be an absolute directory]) ;;
136 configured_native_system_header_dir="${withval}"
137 ], [configured_native_system_header_dir=])
139 AC_ARG_WITH(build-sysroot,
140 [AS_HELP_STRING([--with-build-sysroot=sysroot],
141 [use sysroot as the system root during the build])],
142 [if test x"$withval" != x ; then
143 SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
145 [SYSROOT_CFLAGS_FOR_TARGET=])
146 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
148 if test "x$prefix" = xNONE; then
149 test_prefix=/usr/local
153 if test "x$exec_prefix" = xNONE; then
154 test_exec_prefix=$test_prefix
156 test_exec_prefix=$exec_prefix
160 [AS_HELP_STRING([[--with-sysroot[=DIR]]],
161 [search for usr/lib, usr/include, et al, within DIR])],
163 case ${with_sysroot} in
165 */) with_sysroot=`echo $with_sysroot | sed 's,/$,,'` ;;
167 case ${with_sysroot} in
168 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
169 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
172 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
173 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
175 case ${TARGET_SYSTEM_ROOT} in
176 "${test_prefix}"|"${test_prefix}/"*|\
177 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
178 '${prefix}'|'${prefix}/'*|\
179 '${exec_prefix}'|'${exec_prefix}/'*)
180 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
181 TARGET_SYSTEM_ROOT_DEFINE="$t"
186 TARGET_SYSTEM_ROOT_DEFINE=
187 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
189 AC_SUBST(TARGET_SYSTEM_ROOT)
190 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
191 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
193 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
194 # passed in by the toplevel make and thus we'd get different behavior
195 # depending on where we built the sources.
197 # Specify the g++ header file directory
198 AC_ARG_WITH(gxx-include-dir,
199 [AS_HELP_STRING([--with-gxx-include-dir=DIR],
200 [specifies directory to put g++ header files])],
201 [case "${withval}" in
202 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
204 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
207 # If both --with-sysroot and --with-gxx-include-dir are passed, we interpolate
208 # the former in the latter and, upon success, compute gcc_gxx_include_dir as
209 # relative to the sysroot.
210 gcc_gxx_include_dir_add_sysroot=0
212 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
213 if test x${gcc_gxx_include_dir} = x; then
214 if test x${enable_version_specific_runtime_libs} = xyes; then
215 gcc_gxx_include_dir='${libsubdir}/include/c++'
217 libstdcxx_incdir='include/c++/$(version)'
218 if test x$host != x$target; then
219 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
221 gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir"
223 elif test "${with_sysroot+set}" = set; then
224 gcc_gxx_without_sysroot=`expr "${gcc_gxx_include_dir}" : "${with_sysroot}"'\(.*\)'`
225 if test "${gcc_gxx_without_sysroot}"; then
226 gcc_gxx_include_dir="${gcc_gxx_without_sysroot}"
227 gcc_gxx_include_dir_add_sysroot=1
231 # Configuration for an alternate set of C++ headers.
232 gcc_gxx_libcxx_include_dir=
233 # Specify the alternate g++ header file directory
234 AC_ARG_WITH(gxx-libcxx-include-dir,
235 [AS_HELP_STRING([--with-gxx-libcxx-include-dir=DIR],
236 [specifies directory to find libc++ header files])],
237 [case "${withval}" in
238 yes) AC_MSG_ERROR(bad value ${withval} given for libc++ include directory) ;;
240 *) gcc_gxx_libcxx_include_dir=$with_gxx_libcxx_include_dir ;;
243 # If both --with-sysroot and --with-gxx-libcxx-include-dir are passed, we
244 # check to see if the latter starts with the former and, upon success, compute
245 # gcc_gxx_libcxx_include_dir as relative to the sysroot.
246 gcc_gxx_libcxx_include_dir_add_sysroot=0
248 if test x${gcc_gxx_libcxx_include_dir} != x; then
249 AC_DEFINE(ENABLE_STDLIB_OPTION, 1,
250 [Define if the -stdlib= option should be enabled.])
252 AC_DEFINE(ENABLE_STDLIB_OPTION, 0)
254 # ??? This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
255 if test x${gcc_gxx_libcxx_include_dir} = x; then
256 if test x${enable_version_specific_runtime_libs} = xyes; then
257 gcc_gxx_libcxx_include_dir='${libsubdir}/libc++_include/c++/v1'
259 libcxx_incdir='libc++_include/c++/$(version)/v1'
260 if test x$host != x$target; then
261 libcxx_incdir="$target_alias/$libcxx_incdir"
263 gcc_gxx_libcxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libcxx_incdir"
265 elif test "${with_sysroot+set}" = set; then
266 gcc_gxx_libcxx_without_sysroot=`expr "${gcc_gxx_libcxx_include_dir}" : "${with_sysroot}"'\(.*\)'`
267 if test "${gcc_gxx_libcxx_without_sysroot}"; then
268 gcc_gxx_libcxx_include_dir="${gcc_gxx_libcxx_without_sysroot}"
269 gcc_gxx_libcxx_include_dir_add_sysroot=1
273 AC_ARG_WITH(cpp_install_dir,
274 [AC_HELP_STRING([--with-cpp-install-dir=DIR],
275 [install the user visible C preprocessor in DIR
276 (relative to PREFIX) as well as PREFIX/bin])],
277 [if test x$withval = xyes; then
278 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
279 elif test x$withval != xno; then
280 cpp_install_dir=$withval
283 # We would like to our source tree to be readonly. However when releases or
284 # pre-releases are generated, the flex/bison generated files as well as the
285 # various formats of manuals need to be included along with the rest of the
286 # sources. Therefore we have --enable-generated-files-in-srcdir to do
289 AC_MSG_CHECKING([whether to place generated files in the source directory])
290 dnl generated-files-in-srcdir is disabled by default
291 AC_ARG_ENABLE(generated-files-in-srcdir,
292 [AS_HELP_STRING([--enable-generated-files-in-srcdir],
293 [put copies of generated files in source dir
294 intended for creating source tarballs for users
295 without texinfo bison or flex])],
296 generated_files_in_srcdir=$enableval,
297 generated_files_in_srcdir=no)
299 AC_MSG_RESULT($generated_files_in_srcdir)
301 if test "$generated_files_in_srcdir" = "yes"; then
308 # -------------------
309 # Find default linker
310 # -------------------
314 [AS_HELP_STRING([--with-gnu-ld], [arrange to work with GNU ld])],
315 gnu_ld_flag="$with_gnu_ld",
320 ld64_flag=yes # Darwin can only use a ld64-compatible linker.
321 dsymutil_flag=yes # Darwin uses dsymutil to link debug.
329 # With pre-defined ld
331 [AS_HELP_STRING([--with-ld], [arrange to use the specified ld (full pathname)])],
332 DEFAULT_LINKER="$with_ld")
333 if test x"${DEFAULT_LINKER+set}" = x"set"; then
334 if test ! -x "$DEFAULT_LINKER"; then
335 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
336 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
338 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep ld64- > /dev/null; then
341 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
342 [Define to enable the use of a default linker.])
345 AC_MSG_CHECKING([whether a default linker was specified])
346 if test x"${DEFAULT_LINKER+set}" = x"set"; then
347 if test x"$gnu_ld_flag" = x"no"; then
348 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
350 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
356 # With demangler in GNU ld
357 AC_ARG_WITH(demangler-in-ld,
358 [AS_HELP_STRING([--with-demangler-in-ld], [try to use demangler in GNU ld])],
359 demangler_in_ld="$with_demangler_in_ld",
362 # Allow the user to specify a dsymutil executable (used on Darwin only, so far)
363 AC_ARG_WITH(dsymutil,
364 [AS_HELP_STRING([--with-dsymutil], [arrange to use the specified dsymutil (full pathname)])],
365 DEFAULT_DSYMUTIL="$with_dsymutil")
368 if test x"${DEFAULT_DSYMUTIL+set}" = x"set"; then
369 if test ! -x "$DEFAULT_DSYMUTIL"; then
370 AC_MSG_ERROR([cannot execute: $DEFAULT_DSYMUTIL: check --with-dsymutil or env. var. DEFAULT_DSYMUTIL])
372 if dsymutil_vers=`$DEFAULT_DSYMUTIL -v /dev/null 2>&1`; then
376 AC_DEFINE_UNQUOTED(DEFAULT_DSYMUTIL,"$DEFAULT_DSYMUTIL",
377 [Define to enable the use of a default debug linker.])
380 AC_MSG_CHECKING([whether a default dsymutil was specified])
381 if test x"${DEFAULT_DSYMUTIL+set}" = x"set"; then
382 AC_MSG_RESULT([yes ($DEFAULT_DSYMUTIL)])
387 # ----------------------
388 # Find default assembler
389 # ----------------------
393 [AS_HELP_STRING([--with-gnu-as], [arrange to work with GNU as])],
394 gas_flag="$with_gnu_as",
398 [AS_HELP_STRING([--with-as], [arrange to use the specified as (full pathname)])],
399 DEFAULT_ASSEMBLER="$with_as")
400 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
401 if test ! -x "$DEFAULT_ASSEMBLER"; then
402 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
403 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
406 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
407 [Define to enable the use of a default assembler.])
410 AC_MSG_CHECKING([whether a default assembler was specified])
411 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
412 if test x"$gas_flag" = x"no"; then
413 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
415 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
425 # If a non-executable a.out is present (e.g. created by GNU as above even if
426 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
427 # file, even when creating an executable, so an execution test fails.
428 # Remove possible default executable files to avoid this.
430 # FIXME: This really belongs into AC_PROG_CC and can be removed once
431 # Autoconf includes it.
432 rm -f a.out a.exe b.out
434 # Find the native compiler
437 ACX_PROG_GNAT([-I"$srcdir"/ada/libgnat])
438 ACX_PROG_GDC([-I"$srcdir"/d])
440 # Do configure tests with the C++ compiler, since that's what we build with.
443 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
444 # optimizations to be activated explicitly by the toplevel.
447 *) CFLAGS=`echo "$CFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" `
448 CXXFLAGS=`echo "$CXXFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" ` ;;
454 # Determine PICFLAG for target gnatlib.
455 GCC_PICFLAG_FOR_TARGET
456 AC_SUBST(PICFLAG_FOR_TARGET)
458 # -------------------------
459 # Check C compiler features
460 # -------------------------
462 AC_USE_SYSTEM_EXTENSIONS
469 # sizeof(char) is 1 by definition.
470 AC_CHECK_SIZEOF(void *)
471 AC_CHECK_SIZEOF(short)
473 AC_CHECK_SIZEOF(long)
474 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
476 if test x"$ac_cv_c_uint64_t" = x"no" -o x"$ac_cv_c_int64_t" = x"no"; then
477 AC_MSG_ERROR([uint64_t or int64_t not found])
480 # check what underlying integer type int64_t uses
481 AC_CACHE_CHECK(for int64_t underlying type, ac_cv_int64_t_type, [
482 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
486 template <typename T> struct X { };
488 struct X<long> { typedef long t; };
489 ]], [[X<int64_t>::t x;]])],[ac_cv_int64_t_type=long],[ac_cv_int64_t_type="long long"])])
490 if test "$ac_cv_int64_t_type" = "long"; then
491 AC_DEFINE(INT64_T_IS_LONG, 1,
492 [Define if int64_t uses long as underlying type.])
494 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
498 template <typename T> struct X { };
500 struct X<long long> { typedef long long t; };
501 ]], [[X<int64_t>::t x;]])],[],[AC_MSG_ERROR([error verifying int64_t uses long long])])
504 AC_CACHE_CHECK(for std::swap in <utility>, ac_cv_std_swap_in_utility, [
505 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
507 ]], [[int a, b; std::swap(a,b);]])],[ac_cv_std_swap_in_utility=yes],[ac_cv_std_swap_in_utility=no])])
508 if test $ac_cv_std_swap_in_utility = yes; then
509 AC_DEFINE(HAVE_SWAP_IN_UTILITY, 1,
510 [Define if <utility> defines std::swap.])
513 # Check whether compiler is affected by placement new aliasing bug (PR 29286).
514 # If the host compiler is affected by the bug, and we build with optimization
515 # enabled (which happens e.g. when cross-compiling), the pool allocator may
516 # get miscompiled. Use -fno-strict-aliasing to work around this problem.
517 # Since there is no reliable feature check for the presence of this bug,
518 # we simply use a GCC version number check. (This should never trigger for
519 # stages 2 or 3 of a native bootstrap.)
521 if test "$GCC" = yes; then
522 saved_CXXFLAGS="$CXXFLAGS"
524 # The following test compilation will succeed if and only if $CXX accepts
525 # -fno-strict-aliasing *and* is older than GCC 4.3.
526 CXXFLAGS="$CXXFLAGS -fno-strict-aliasing"
527 AC_MSG_CHECKING([whether $CXX is affected by placement new aliasing bug])
528 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
529 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)
530 #error compiler not affected by placement new aliasing bug
533 [AC_MSG_RESULT([yes]); aliasing_flags='-fno-strict-aliasing'],
534 [AC_MSG_RESULT([no])])
536 CXXFLAGS="$saved_CXXFLAGS"
538 AC_SUBST(aliasing_flags)
542 # ---------------------
543 # Warnings and checking
544 # ---------------------
546 # Check $CC warning features (if it's GCC).
547 # We want to use -pedantic, but we don't want warnings about
551 # * C++11 narrowing conversions in { }
552 # So, we only use -pedantic if we can disable those warnings.
554 # In stage 1, disable -Wformat warnings from old GCCs about new % codes
555 AC_ARG_ENABLE(build-format-warnings,
556 AS_HELP_STRING([--disable-build-format-warnings],[don't use -Wformat while building GCC]),
557 [],[enable_build_format_warnings=yes])
558 AS_IF([test $enable_build_format_warnings = no],
559 [wf_opt=-Wno-format],[wf_opt=])
560 ACX_PROG_CXX_WARNING_OPTS(
561 m4_quote(m4_do([-W -Wall -Wno-narrowing -Wwrite-strings ],
562 [-Wcast-qual -Wno-error=format-diag $wf_opt])),
564 ACX_PROG_CC_WARNING_OPTS(
565 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes ],
566 [-Wno-error=format-diag])), [c_loose_warn])
567 ACX_PROG_CXX_WARNING_OPTS(
568 m4_quote(m4_do([-Wmissing-format-attribute ],
569 [-Woverloaded-virtual])), [strict_warn])
570 ACX_PROG_CC_WARNING_OPTS(
571 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
572 ACX_PROG_CXX_WARNING_ALMOST_PEDANTIC(
573 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
574 [-Wno-overlength-strings])), [strict_warn])
575 ACX_PROG_CXX_WARNINGS_ARE_ERRORS([manual], [strict_warn])
577 # The above macros do nothing if the compiler is not GCC. However, the
578 # Makefile has more goo to add other flags, so these variables are used
579 # to enable warnings only for GCC.
582 if test "x$GCC" = "xyes"; then
583 warn_cflags='$(GCC_WARN_CFLAGS)'
584 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
586 AC_SUBST(warn_cflags)
587 AC_SUBST(warn_cxxflags)
589 # Disable exceptions and RTTI if building with g++
590 ACX_PROG_CC_WARNING_OPTS(
591 m4_quote(m4_do([-fno-exceptions -fno-rtti -fasynchronous-unwind-tables])),
594 # Enable expensive internal checks
596 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
600 AC_ARG_ENABLE(checking,
601 [AS_HELP_STRING([[--enable-checking[=LIST]]],
602 [enable expensive run-time checks. With LIST,
603 enable only specific categories of checks.
604 Categories are: yes,no,all,none,release.
605 Flags are: assert,df,extra,fold,gc,gcac,gimple,misc,
606 rtlflag,rtl,runtime,tree,valgrind,types])],
607 [ac_checking_flags="${enableval}"],[
608 # Determine the default checks.
609 if test x$is_release = x ; then
610 ac_checking_flags=yes,extra
612 ac_checking_flags=release
614 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
615 for check in release $ac_checking_flags
618 # these set all the flags to specific states
619 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
620 ac_fold_checking= ; ac_gc_checking=1 ; ac_extra_checking= ;
621 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
622 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
623 ac_tree_checking=1 ; ac_valgrind_checking= ;
624 ac_types_checking=1 ;;
625 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
626 ac_fold_checking= ; ac_gc_checking= ; ac_extra_checking= ;
627 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
628 ac_rtlflag_checking= ; ac_runtime_checking= ;
629 ac_tree_checking= ; ac_valgrind_checking= ;
630 ac_types_checking= ;;
631 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
632 ac_fold_checking=1 ; ac_gc_checking=1 ; ac_extra_checking=1 ;
633 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
634 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
635 ac_tree_checking=1 ; ac_valgrind_checking= ;
636 ac_types_checking=1 ;;
637 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
638 ac_fold_checking= ; ac_gc_checking= ; ac_extra_checking= ;
639 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
640 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
641 ac_tree_checking= ; ac_valgrind_checking= ;
642 ac_types_checking= ;;
643 # these enable particular checks
644 assert) ac_assert_checking=1 ;;
645 df) ac_df_checking=1 ;;
646 extra) ac_extra_checking=1 ;;
647 fold) ac_fold_checking=1 ;;
648 gc) ac_gc_checking=1 ;;
649 gcac) ac_gc_always_collect=1 ;;
650 gimple) ac_gimple_checking=1 ;;
651 misc) ac_checking=1 ;;
652 rtl) ac_rtl_checking=1 ;;
653 rtlflag) ac_rtlflag_checking=1 ;;
654 runtime) ac_runtime_checking=1 ;;
655 tree) ac_tree_checking=1 ;;
656 types) ac_types_checking=1 ;;
657 valgrind) ac_valgrind_checking=1 ;;
658 *) AC_MSG_ERROR(unknown check category $check) ;;
664 if test x$ac_checking != x ; then
665 AC_DEFINE(CHECKING_P, 1,
666 [Define to 0/1 if you want more run-time sanity checks. This one gets a grab
667 bag of miscellaneous but relatively cheap checks.])
668 nocommon_flag=-fno-common
670 AC_DEFINE(CHECKING_P, 0)
672 AC_SUBST(nocommon_flag)
673 if test x$ac_extra_checking != x ; then
674 AC_DEFINE(ENABLE_EXTRA_CHECKING, 1,
675 [Define to 0/1 if you want extra run-time checking that might affect code
678 AC_DEFINE(ENABLE_EXTRA_CHECKING, 0)
680 if test x$ac_df_checking != x ; then
681 AC_DEFINE(ENABLE_DF_CHECKING, 1,
682 [Define if you want more run-time sanity checks for dataflow.])
684 if test x$ac_assert_checking != x ; then
685 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
686 [Define if you want assertions enabled. This is a cheap check.])
688 if test x$ac_gimple_checking != x ; then
689 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
690 [Define if you want operations on GIMPLE (the basic data structure of
691 the high-level optimizers) to be checked for dynamic type safety at
692 runtime. This is moderately expensive.])
694 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
695 if test x$ac_runtime_checking != x ; then
696 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
697 [Define if you want runtime assertions enabled. This is a cheap check.])
699 if test x$ac_tree_checking != x ; then
700 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
701 [Define if you want all operations on trees (the basic data
702 structure of the front ends) to be checked for dynamic type safety
703 at runtime. This is moderately expensive.
707 if test x$ac_types_checking != x ; then
708 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
709 [Define if you want all gimple types to be verified after gimplifiation.
713 AC_SUBST(TREECHECKING)
714 if test x$ac_rtl_checking != x ; then
715 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
716 [Define if you want all operations on RTL (the basic data structure
717 of the optimizer and back end) to be checked for dynamic type safety
718 at runtime. This is quite expensive.])
720 if test x$ac_rtlflag_checking != x ; then
721 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
722 [Define if you want RTL flag accesses to be checked against the RTL
723 codes that are supported for each access macro. This is relatively
726 if test x$ac_gc_checking != x ; then
727 AC_DEFINE(ENABLE_GC_CHECKING, 1,
728 [Define if you want the garbage collector to do object poisoning and
729 other memory allocation checks. This is quite expensive.])
731 if test x$ac_gc_always_collect != x ; then
732 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
733 [Define if you want the garbage collector to operate in maximally
734 paranoid mode, validating the entire heap and collecting garbage at
735 every opportunity. This is extremely expensive.])
737 if test x$ac_fold_checking != x ; then
738 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
739 [Define if you want fold checked that it never destructs its argument.
740 This is quite expensive.])
742 valgrind_path_defines=
745 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
746 dnl # an if statement. This was the source of very frustrating bugs
747 dnl # in converting to autoconf 2.5x!
748 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
750 # It is certainly possible that there's valgrind but no valgrind.h.
751 # GCC relies on making annotations so we must have both.
752 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
753 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
754 [[#include <valgrind/memcheck.h>
755 #ifndef VALGRIND_DISCARD
756 #error VALGRIND_DISCARD not defined
758 [gcc_cv_header_valgrind_memcheck_h=yes],
759 [gcc_cv_header_valgrind_memcheck_h=no])
760 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
761 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
762 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
763 [[#include <memcheck.h>
764 #ifndef VALGRIND_DISCARD
765 #error VALGRIND_DISCARD not defined
767 [gcc_cv_header_memcheck_h=yes],
768 [gcc_cv_header_memcheck_h=no])
769 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
770 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
771 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
772 [Define if valgrind's valgrind/memcheck.h header is installed.])
774 if test $gcc_cv_header_memcheck_h = yes; then
775 AC_DEFINE(HAVE_MEMCHECK_H, 1,
776 [Define if valgrind's memcheck.h header is installed.])
779 if test x$ac_valgrind_checking != x ; then
780 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
781 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
782 if test "x$valgrind_path" = "x" \
783 || (test $have_valgrind_h = no \
784 && test $gcc_cv_header_memcheck_h = no \
785 && test $gcc_cv_header_valgrind_memcheck_h = no); then
786 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
788 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
789 valgrind_command="$valgrind_path -q"
790 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
791 [Define if you want to run subprograms and generated programs
792 through valgrind (a memory checker). This is extremely expensive.])
794 AC_SUBST(valgrind_path_defines)
795 AC_SUBST(valgrind_command)
797 # Enable code coverage collection
798 AC_ARG_ENABLE(coverage,
799 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
800 [enable compiler's code coverage collection.
801 Use to measure compiler performance and locate
802 unused parts of the compiler. With LEVEL, specify
803 optimization. Values are opt, noopt,
805 [case "${enableval}" in
807 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0 -fkeep-static-functions"
810 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2 -fkeep-static-functions"
813 # a.k.a. --disable-coverage
817 AC_MSG_ERROR(unknown coverage setting $enableval)
821 AC_SUBST(coverage_flags)
823 AC_ARG_ENABLE(gather-detailed-mem-stats,
824 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
825 [enable detailed memory allocation stats gathering])], [],
826 [enable_gather_detailed_mem_stats=no])
827 gather_stats=`if test $enable_gather_detailed_mem_stats != no; then echo 1; else echo 0; fi`
828 AC_DEFINE_UNQUOTED(GATHER_STATISTICS, $gather_stats,
829 [Define to enable detailed memory allocation stats gathering.])
831 AC_ARG_ENABLE(valgrind-annotations,
832 [AS_HELP_STRING([--enable-valgrind-annotations],
833 [enable valgrind runtime interaction])], [],
834 [enable_valgrind_annotations=no])
835 if test x$enable_valgrind_annotations != xno \
836 || test x$ac_valgrind_checking != x; then
837 if (test $have_valgrind_h = no \
838 && test $gcc_cv_header_memcheck_h = no \
839 && test $gcc_cv_header_valgrind_memcheck_h = no); then
840 AC_MSG_ERROR([*** Can't find valgrind/memcheck.h, memcheck.h or valgrind.h])
842 AC_DEFINE(ENABLE_VALGRIND_ANNOTATIONS, 1,
843 [Define to get calls to the valgrind runtime enabled.])
846 # -------------------------------
847 # Miscenalleous configure options
848 # -------------------------------
850 # Determine whether or not multilibs are enabled.
851 AC_ARG_ENABLE(multilib,
852 [AS_HELP_STRING([--enable-multilib],
853 [enable library support for multiple ABIs])],
854 [], [enable_multilib=yes])
855 AC_SUBST(enable_multilib)
857 # Determine whether or not multiarch is enabled.
858 AC_ARG_ENABLE(multiarch,
859 [AS_HELP_STRING([--enable-multiarch],
860 [enable support for multiarch paths])],
861 [case "${enableval}" in
862 yes|no|auto) enable_multiarch=$enableval;;
863 *) AC_MSG_ERROR(bad value ${enableval} given for --enable-multiarch option) ;;
864 esac], [enable_multiarch=auto])
865 if test x${enable_multiarch} = xauto; then
866 if test x${with_native_system_header_dir} != x; then
867 ma_msg_suffix=", disabled auto check (configured with --native-system-header-dir)"
870 if test x$host != x$target && test "x$with_sysroot" = x; then
871 ma_msg_suffix=", disabled auto check (cross build configured without --with-sysroot)"
875 AC_MSG_CHECKING(for multiarch configuration)
876 AC_SUBST(enable_multiarch)
877 AC_MSG_RESULT($enable_multiarch$ma_msg_suffix)
879 # needed for setting the multiarch name for soft-float/hard-float ABIs
883 # default stack clash protection guard size as power of twos in bytes.
884 # Please keep these in sync with params.def.
888 # Keep the default value when the option is not used to 0, this allows us to
889 # distinguish between the cases where the user specifially set a value via
890 # configure and when the normal default value is used.
891 AC_ARG_WITH(stack-clash-protection-guard-size,
892 [AS_HELP_STRING([--with-stack-clash-protection-guard-size=size],
893 [Set the default stack clash protection guard size for specific targets as a power of two in bytes.])],
894 [DEFAULT_STK_CLASH_GUARD_SIZE="$with_stack_clash_protection_guard_size"], [DEFAULT_STK_CLASH_GUARD_SIZE=0])
895 if test $DEFAULT_STK_CLASH_GUARD_SIZE -ne 0 \
896 && (test $DEFAULT_STK_CLASH_GUARD_SIZE -lt $stk_clash_min \
897 || test $DEFAULT_STK_CLASH_GUARD_SIZE -gt $stk_clash_max); then
898 AC_MSG_ERROR(m4_normalize([
899 Invalid value $DEFAULT_STK_CLASH_GUARD_SIZE for --with-stack-clash-protection-guard-size. \
900 Must be between $stk_clash_min and $stk_clash_max.]))
903 AC_DEFINE_UNQUOTED(DEFAULT_STK_CLASH_GUARD_SIZE, $DEFAULT_STK_CLASH_GUARD_SIZE,
904 [Define to larger than zero set the default stack clash protector size.])
906 # Enable __cxa_atexit for C++.
907 AC_ARG_ENABLE(__cxa_atexit,
908 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
911 # Enable C extension for decimal float if target supports it.
912 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
914 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
915 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
916 [Define to 1 to enable decimal float extension to C.])
918 # Use default_decimal_float for dependency.
919 enable_decimal_float=$default_decimal_float
921 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
922 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
923 [Define to 1 to specify that we are using the BID decimal floating
924 point format instead of DPD])
926 # Enable C extension for fixed-point arithmetic.
927 AC_ARG_ENABLE(fixed-point,
928 [AS_HELP_STRING([--enable-fixed-point],
929 [enable fixed-point arithmetic extension to C])],
934 enable_fixed_point=yes
938 enable_fixed_point=yes
941 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
942 enable_fixed_point=no
946 AC_SUBST(enable_fixed_point)
948 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
949 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
950 [Define to 1 to enable fixed-point arithmetic extension to C.])
953 # Pass with no value to take the default
954 # Pass with a value to specify a thread package
955 AC_ARG_ENABLE(threads,
956 [AS_HELP_STRING([[--enable-threads[=LIB]]],
957 [enable thread usage for target GCC,
958 using LIB thread package])],,
962 [AS_HELP_STRING([--enable-tls],
963 [enable or disable generation of tls code
964 overriding the assembler check for tls support])],
968 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
969 Valid choices are 'yes' and 'no'.]) ;;
973 AC_ARG_ENABLE(vtable-verify,
974 [AS_HELP_STRING([--enable-vtable-verify],
975 [enable vtable verification feature])],,
976 [enable_vtable_verify=no])
977 vtable_verify=`if test x$enable_vtable_verify = xyes; then echo 1; else echo 0; fi`
978 AC_DEFINE_UNQUOTED(ENABLE_VTABLE_VERIFY, $vtable_verify,
979 [Define 0/1 if vtable verification feature is enabled.])
981 AC_ARG_ENABLE(analyzer,
982 [AS_HELP_STRING([--disable-analyzer],
983 [disable -fanalyzer static analyzer])],
984 if test x$enable_analyzer = xno; then
990 AC_DEFINE_UNQUOTED(ENABLE_ANALYZER, $analyzer,
991 [Define 0/1 if static analyzer feature is enabled.])
993 AC_ARG_ENABLE(objc-gc,
994 [AS_HELP_STRING([--enable-objc-gc],
995 [enable the use of Boehm's garbage collector with
996 the GNU Objective-C runtime])],
997 if test x$enable_objc_gc = xno; then
1005 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
1006 dwarf2="$with_dwarf2",
1009 AC_ARG_ENABLE(shared,
1010 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
1012 case $enable_shared in
1016 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
1017 for pkg in $enableval; do
1018 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
1025 ], [enable_shared=yes])
1026 AC_SUBST(enable_shared)
1029 [ --disable-gcov don't provide libgcov and related host tools],
1030 [], [enable_gcov=yes])
1031 AC_SUBST(enable_gcov)
1034 [AS_HELP_STRING([--with-specs=SPECS],
1035 [add SPECS to driver command-line processing])],
1036 [CONFIGURE_SPECS=$withval],
1039 AC_SUBST(CONFIGURE_SPECS)
1041 ACX_PKGVERSION([GCC])
1042 ACX_BUGURL([https://gcc.gnu.org/bugs/])
1044 # Allow overriding the default URL for documentation
1045 AC_ARG_WITH(documentation-root-url,
1046 AS_HELP_STRING([--with-documentation-root-url=URL],
1047 [Root for documentation URLs]),
1049 yes) AC_MSG_ERROR([documentation root URL not specified]) ;;
1050 no) AC_MSG_ERROR([documentation root URL not specified]) ;;
1051 */) DOCUMENTATION_ROOT_URL="$withval" ;;
1052 *) AC_MSG_ERROR([documentation root URL does not end with /]) ;;
1054 DOCUMENTATION_ROOT_URL="https://gcc.gnu.org/onlinedocs/"
1056 AC_DEFINE_UNQUOTED(DOCUMENTATION_ROOT_URL,"$DOCUMENTATION_ROOT_URL",
1057 [Define to the root for documentation URLs.])
1059 # Allow overriding the default URL for GCC changes
1060 AC_ARG_WITH(changes-root-url,
1061 AS_HELP_STRING([--with-changes-root-url=URL],
1062 [Root for GCC changes URLs]),
1064 yes) AC_MSG_ERROR([changes root URL not specified]) ;;
1065 no) AC_MSG_ERROR([changes root URL not specified]) ;;
1066 */) CHANGES_ROOT_URL="$withval" ;;
1067 *) AC_MSG_ERROR([changes root URL does not end with /]) ;;
1069 CHANGES_ROOT_URL="https://gcc.gnu.org/"
1071 AC_DEFINE_UNQUOTED(CHANGES_ROOT_URL,"$CHANGES_ROOT_URL",
1072 [Define to the root for URLs about GCC changes.])
1074 # Sanity check enable_languages in case someone does not run the toplevel
1075 # configure # script.
1076 AC_ARG_ENABLE(languages,
1077 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
1078 [case ,${enable_languages}, in
1080 # go safe -- we cannot be much sure without the toplevel
1082 # analysis of which target libs are present and usable
1086 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
1091 enable_languages=c,${enable_languages}
1094 [enable_languages=c])
1096 # If top-level libada has been disabled, then wire in install-gnatlib
1097 # invocation with `make install', so that one can build and install
1098 # the library manually with `make -C gcc all gnatlib gnattools install'.
1099 if test x"$enable_libada" = xno; then
1100 gnat_install_lib=gnat-install-lib
1104 AC_SUBST(gnat_install_lib)
1106 if test x"$enable_as_accelerator_for" != x; then
1107 AC_DEFINE(ACCEL_COMPILER, 1,
1108 [Define if this compiler should be built as the offload target compiler.])
1109 enable_as_accelerator=yes
1112 # In this case we expect offload compiler to be built as native, so we
1113 # need to rename the driver to avoid clashes with host's drivers.
1114 program_transform_name="s&^&${target}-&" ;;
1116 sedscript="s#${target_noncanonical}#${enable_as_accelerator_for}-accel-${target_noncanonical}#"
1117 program_transform_name=`echo $program_transform_name | sed $sedscript`
1118 accel_dir_suffix=/accel/${target_noncanonical}
1119 real_target_noncanonical=${enable_as_accelerator_for}
1121 AC_SUBST(enable_as_accelerator)
1122 AC_SUBST(real_target_noncanonical)
1123 AC_SUBST(accel_dir_suffix)
1125 for tgt in `echo $enable_offload_targets | sed 's/,/ /g'`; do
1126 tgt=`echo $tgt | sed 's/=.*//'`
1130 *-intelmic-* | *-intelmicemul-*)
1131 omp_device_property=omp-device-properties-i386
1132 omp_device_property_tmake_file="${omp_device_property_tmake_file} \$(srcdir)/config/i386/t-omp-device"
1135 omp_device_property=omp-device-properties-gcn
1136 omp_device_property_tmake_file="${omp_device_property_tmake_file} \$(srcdir)/config/gcn/t-omp-device"
1139 omp_device_property=omp-device-properties-nvptx
1140 omp_device_property_tmake_file="${omp_device_property_tmake_file} \$(srcdir)/config/nvptx/t-omp-device"
1143 AC_MSG_ERROR([unknown offload target specified])
1146 omp_device_properties="${omp_device_properties} ${tgt}=${omp_device_property}"
1147 omp_device_property_deps="${omp_device_property_deps} ${omp_device_property}"
1149 if test x"$offload_targets" = x; then
1150 offload_targets=$tgt
1152 offload_targets="$offload_targets,$tgt"
1155 AC_SUBST(omp_device_properties)
1156 AC_SUBST(omp_device_property_deps)
1158 AC_DEFINE_UNQUOTED(OFFLOAD_TARGETS, "$offload_targets",
1159 [Define to offload targets, separated by commas.])
1160 if test x"$enable_offloading" != x; then
1161 AC_DEFINE(ENABLE_OFFLOADING, 1,
1162 [Define this to enable support for offloading.])
1164 AC_DEFINE(ENABLE_OFFLOADING, 0,
1165 [Define this to enable support for offloading.])
1168 if test "x$enable_offload_defaulted" = xyes; then
1169 AC_DEFINE(OFFLOAD_DEFAULTED, 1,
1170 [Define to 1 to if -foffload is defaulted])
1173 AC_ARG_WITH(multilib-list,
1174 [AS_HELP_STRING([--with-multilib-list], [select multilibs (AArch64, ARM, OR1K, RISC-V, SH and x86-64 only)])],
1176 with_multilib_list=default)
1178 AC_ARG_WITH(multilib-generator,
1179 [AS_HELP_STRING([--with-multilib-generator], [Multi-libs configuration string (RISC-V only)])],
1181 with_multilib_generator=default)
1183 # -------------------------
1184 # Checks for other programs
1185 # -------------------------
1189 # Find some useful tools
1191 # We need awk to create options.c and options.h.
1192 # Bail out if it's missing.
1194 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
1201 AC_SUBST(ranlib_flags)
1205 # See if cmp has --ignore-initial.
1206 gcc_AC_PROG_CMP_IGNORE_INITIAL
1208 # See if we have the mktemp command.
1209 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
1211 # See if makeinfo has been installed and is modern enough
1212 # that we can use it.
1213 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
1214 [GNU texinfo.* \([0-9][0-9.]*\)],
1215 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
1216 if test $gcc_cv_prog_makeinfo_modern = no; then
1218 *** Makeinfo is missing or too old.
1219 *** Info documentation will not be built.])
1224 AC_SUBST(BUILD_INFO)
1226 # Is pod2man recent enough to regenerate manpages?
1227 AC_MSG_CHECKING([for recent Pod::Man])
1228 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
1230 GENERATED_MANPAGES=generated-manpages
1235 AC_SUBST(GENERATED_MANPAGES)
1237 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
1240 dnl Don't use AC_PROG_LEX; we insist on flex.
1241 dnl LEXLIB is not useful in gcc.
1242 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
1245 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
1247 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
1248 # check for build == host before using them.
1251 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
1252 && test -d ../binutils ; then
1253 NM='${objdir}/../binutils/nm-new'
1255 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
1259 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
1260 && test -d ../binutils ; then
1261 AR='${objdir}/../binutils/ar'
1263 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
1266 # The jit documentation looks better if built with sphinx, but can be
1267 # built with texinfo if sphinx is not available.
1268 # Set "doc_build_sys" to "sphinx" or "texinfo" accordingly.
1269 AC_CHECK_PROG(doc_build_sys, sphinx-build, sphinx, texinfo)
1271 # --------------------
1272 # Checks for C headers
1273 # --------------------
1275 # Need to reject headers which give warnings, so that the -Werror bootstrap
1276 # works later. *sigh* This needs to come before all header checks.
1283 AC_HEADER_TIOCGWINSZ
1284 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
1285 fcntl.h ftw.h unistd.h sys/file.h sys/time.h sys/mman.h \
1286 sys/resource.h sys/param.h sys/times.h sys/stat.h sys/locking.h \
1287 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
1289 # Check for thread headers.
1290 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
1291 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
1293 # These tests can't be done till we know if we have limits.h.
1297 # ----------------------
1298 # Checks for C++ headers
1299 # ----------------------
1301 dnl Autoconf will give an error in the configure script if there is no
1302 dnl C++ preprocessor. Hack to prevent that.
1303 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
1305 m4_popdef([AC_MSG_ERROR])[]dnl
1307 AC_CHECK_HEADERS(unordered_map)
1308 AC_CHECK_HEADERS(tr1/unordered_map)
1309 AC_CHECK_HEADERS(ext/hash_map)
1312 # Dependency checking.
1316 AC_CONFIG_COMMANDS([gccdepdir],[
1317 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR
1318 for lang in $subdirs c-family common analyzer rtl-ssa
1320 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs $lang/$DEPDIR
1321 done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR])
1323 ZW_PROG_COMPILER_DEPENDENCIES([CXX])
1330 # These libraries may be used by collect2.
1331 # We may need a special search path to get them linked.
1332 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
1334 for libs in '' -lld -lmld \
1335 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
1336 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1339 AC_TRY_LINK_FUNC(ldopen,
1340 [gcc_cv_collect2_libs="$libs"; break])
1343 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1344 case $gcc_cv_collect2_libs in
1346 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1348 AC_SUBST(COLLECT2_LIBS)
1350 # When building Ada code on Alpha, we need exc_resume which is usually in
1351 # -lexc. So test for it.
1354 AC_SEARCH_LIBS(exc_resume, exc)
1357 AC_SUBST(GNAT_LIBEXC)
1359 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1362 AC_SEARCH_LIBS(kstat_open, kstat)
1363 EXTRA_GCC_LIBS="$LIBS"
1365 AC_SUBST(EXTRA_GCC_LIBS)
1367 # Solaris needs libsocket and libnsl for socket functions before 11.4.
1368 # C++ needs those for libcody.
1376 # Some systems put ldexp and frexp in libm instead of libc; assume
1377 # they're both in the same place. jcf-dump needs them.
1380 AC_SEARCH_LIBS(ldexp, m)
1385 # Some systems need dlopen
1388 AC_SEARCH_LIBS(dlopen, dl)
1393 # Use <inttypes.h> only if it exists,
1394 # doesn't clash with <sys/types.h>, declares intmax_t and defines
1396 AC_MSG_CHECKING(for inttypes.h)
1397 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1398 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1399 [[#define __STDC_FORMAT_MACROS
1400 #include <sys/types.h>
1401 #include <inttypes.h>]],
1406 [gcc_cv_header_inttypes_h=yes],
1407 [gcc_cv_header_inttypes_h=no])])
1408 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1409 if test $gcc_cv_header_inttypes_h = yes; then
1410 AC_DEFINE(HAVE_INTTYPES_H, 1,
1411 [Define if you have a working <inttypes.h> header file.])
1414 # Look for the ZSTD package.
1417 AC_SUBST(ZSTD_INCLUDE)
1421 AC_SUBST(ZSTD_CPPFLAGS)
1422 AC_SUBST(ZSTD_LDFLAGS)
1424 [AS_HELP_STRING([--with-zstd=PATH],
1425 [specify prefix directory for installed zstd library.
1426 Equivalent to --with-zstd-include=PATH/include
1427 plus --with-zstd-lib=PATH/lib])])
1428 AC_ARG_WITH(zstd-include,
1429 [AS_HELP_STRING([--with-zstd-include=PATH],
1430 [specify directory for installed zstd include files])])
1431 AC_ARG_WITH(zstd-lib,
1432 [AS_HELP_STRING([--with-zstd-lib=PATH],
1433 [specify directory for the installed zstd library])])
1434 case "x$with_zstd" in
1440 *) ZSTD_INCLUDE=$with_zstd/include
1441 ZSTD_LIB=$with_zstd/lib
1445 if test "x$with_zstd" != xno; then
1446 if test "x$with_zstd_include" != x; then
1447 ZSTD_INCLUDE=$with_zstd_include
1449 if test "x$with_zstd_lib" != x; then
1450 ZSTD_LIB=$with_zstd_lib
1452 if test "x$ZSTD_INCLUDE" != x \
1453 && test "x$ZSTD_INCLUDE" != xno; then
1454 ZSTD_CPPFLAGS=-I$ZSTD_INCLUDE
1456 if test "x$ZSTD_LIB" != x \
1457 && test "x$ZSTD_LIB" != xno; then
1458 ZSTD_LDFLAGS=-L$ZSTD_LIB
1461 CXXFLAGS="$CXXFLAGS $ZSTD_CPPFLAGS"
1462 LDFLAGS="$LDFLAGS $ZSTD_LDFLAGS"
1464 AC_MSG_CHECKING(for zstd.h)
1465 AC_CACHE_VAL(gcc_cv_header_zstd_h,
1466 # We require version 1.3.0 or later. This is the first version that has
1467 # ZSTD_getFrameContentSize.
1468 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1470 #if ZSTD_VERSION_NUMBER < 10300
1471 #error "need zstd 1.3.0 or better"
1473 [gcc_cv_header_zstd_h=yes],
1474 [gcc_cv_header_zstd_h=no])])
1475 AC_MSG_RESULT($gcc_cv_header_zstd_h)
1476 if test $gcc_cv_header_zstd_h = yes; then
1477 AC_DEFINE(HAVE_ZSTD_H, 1,
1478 [Define if you have a working <zstd.h> header file.])
1479 elif test "x$with_zstd" != x; then
1480 as_fn_error $? "Unable to find zstd.h. See config.log for details." "$LINENO" 5
1483 # LTO can use zstd compression algorithm
1486 AC_SEARCH_LIBS(ZSTD_compress, zstd)
1492 dnl Disabled until we have a complete test for buggy enum bitfields.
1493 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1495 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1496 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1497 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1498 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1499 putchar_unlocked putc_unlocked)
1500 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoq \
1501 popen sysconf strsignal getrusage nl_langinfo \
1502 gettimeofday mbstowcs wcswidth mmap posix_fallocate setlocale \
1503 gcc_UNLOCKED_FUNCS madvise mallinfo mallinfo2 fstatat)
1505 if test x$ac_cv_func_mbstowcs = xyes; then
1506 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1507 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1513 [gcc_cv_func_mbstowcs_works=yes],
1514 [gcc_cv_func_mbstowcs_works=no],
1515 [gcc_cv_func_mbstowcs_works=yes])])
1516 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1517 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1518 [Define this macro if mbstowcs does not crash when its
1519 first argument is NULL.])
1523 AC_CHECK_TYPE(ssize_t, int)
1524 AC_CHECK_TYPE(caddr_t, char *)
1525 AC_CHECK_TYPE(sighander_t,
1526 AC_DEFINE(HAVE_SIGHANDLER_T, 1,
1527 [Define if <sys/signal.h> defines sighandler_t]),
1530 GCC_AC_FUNC_MMAP_BLACKLIST
1534 # Under VMS, vfork works very differently than on Unix. The standard test
1535 # won't work, and it isn't easily adaptable. It makes more sense to
1537 ac_cv_func_vfork_works=yes
1544 # Until we have in-tree GNU iconv:
1546 if test -f "$LTLIBICONV"; then
1547 LIBICONV_DEP=$LTLIBICONV
1549 AC_SUBST(LIBICONV_DEP)
1555 # We will need to find libiberty.h and ansidecl.h
1556 saved_CFLAGS="$CFLAGS"
1557 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1558 saved_CXXFLAGS="$CXXFLAGS"
1559 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1561 # gcc_AC_CHECK_DECLS doesn't support overloaded functions, so use the
1562 # normal autoconf function for these. But force definition of
1563 # HAVE_DECL_BASENAME like gcc_AC_CHECK_DECLS does, to suppress the bizarre
1564 # basename handling in libiberty.h.
1565 AC_CHECK_DECLS([basename(const char*), strstr(const char*,const char*)], , ,[
1566 #undef HAVE_DECL_BASENAME
1567 #define HAVE_DECL_BASENAME 1
1568 #include "ansidecl.h"
1569 #include "system.h"])
1571 gcc_AC_CHECK_DECLS(getenv atol atoll asprintf sbrk abort atof getcwd getwd \
1572 madvise stpcpy strnlen strsignal strverscmp \
1573 strtol strtoul strtoll strtoull setenv unsetenv \
1574 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1575 free getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1576 #include "ansidecl.h"
1577 #include "system.h"])
1579 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1580 #include "ansidecl.h"
1582 #ifdef HAVE_SYS_RESOURCE_H
1583 #include <sys/resource.h>
1587 gcc_AC_CHECK_DECLS(mallinfo mallinfo2, , ,[
1588 #include "ansidecl.h"
1590 #ifdef HAVE_MALLOC_H
1595 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1596 #include "ansidecl.h"
1598 #ifdef HAVE_SYS_RESOURCE_H
1599 #include <sys/resource.h>
1601 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1602 [Define to `long' if <sys/resource.h> doesn't define.])])
1604 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1605 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1606 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1607 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1608 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1609 #include "ansidecl.h"
1618 gcc_AC_CHECK_DECLS(times, , ,[
1619 #include "ansidecl.h"
1621 #ifdef HAVE_SYS_TIMES_H
1622 #include <sys/times.h>
1626 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1627 #include "ansidecl.h"
1632 # More time-related stuff.
1633 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1634 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1635 #include "ansidecl.h"
1637 #ifdef HAVE_SYS_TIMES_H
1638 #include <sys/times.h>
1640 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1641 if test $ac_cv_struct_tms = yes; then
1642 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1643 [Define if <sys/times.h> defines struct tms.])
1646 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1647 # revisit after autoconf 2.50.
1648 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1649 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1650 #include "ansidecl.h"
1652 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1653 if test $gcc_cv_type_clock_t = yes; then
1654 AC_DEFINE(HAVE_CLOCK_T, 1,
1655 [Define if <time.h> defines clock_t.])
1658 # Check if F_SETLKW is supported by fcntl.
1659 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1660 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1661 #include <fcntl.h>]], [[
1667 return fcntl (1, F_SETLKW, &fl);]])],
1668 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1669 if test $ac_cv_f_setlkw = yes; then
1670 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1671 [Define if F_SETLKW supported by fcntl.])
1674 # Check if O_CLOEXEC is defined by fcntl
1675 AC_CACHE_CHECK(for O_CLOEXEC, ac_cv_o_cloexec, [
1676 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1677 #include <fcntl.h>]], [[
1678 return open ("/dev/null", O_RDONLY | O_CLOEXEC);]])],
1679 [ac_cv_o_cloexec=yes],[ac_cv_o_cloexec=no])])
1680 if test $ac_cv_o_cloexec = yes; then
1681 AC_DEFINE(HOST_HAS_O_CLOEXEC, 1,
1682 [Define if O_CLOEXEC supported by fcntl.])
1685 # C++ Modules would like some networking features to provide the mapping
1686 # server. You can still use modules without them though.
1687 # The following network-related checks could probably do with some
1688 # Windows and other non-linux defenses and checking.
1690 # Local socket connectivity wants AF_UNIX networking
1691 # Check for AF_UNIX networking
1692 AC_CACHE_CHECK(for AF_UNIX, ac_cv_af_unix, [
1693 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1694 #include <sys/types.h>
1695 #include <sys/socket.h>
1697 #include <netinet/in.h>]],[[
1699 un.sun_family = AF_UNSPEC;
1700 int fd = socket (AF_UNIX, SOCK_STREAM, 0);
1701 connect (fd, (sockaddr *)&un, sizeof (un));]])],
1702 [ac_cv_af_unix=yes],
1703 [ac_cv_af_unix=no])])
1704 if test $ac_cv_af_unix = yes; then
1705 AC_DEFINE(HAVE_AF_UNIX, 1,
1706 [Define if AF_UNIX supported.])
1709 # Remote socket connectivity wants AF_INET6 networking
1710 # Check for AF_INET6 networking
1711 AC_CACHE_CHECK(for AF_INET6, ac_cv_af_inet6, [
1712 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1713 #include <sys/types.h>
1714 #include <sys/socket.h>
1715 #include <netinet/in.h>
1716 #include <netdb.h>]],[[
1718 in6.sin6_family = AF_UNSPEC;
1719 struct addrinfo *addrs = 0;
1720 struct addrinfo hints;
1722 hints.ai_family = AF_INET6;
1723 hints.ai_socktype = SOCK_STREAM;
1724 hints.ai_protocol = 0;
1725 hints.ai_canonname = 0;
1728 int e = getaddrinfo ("localhost", 0, &hints, &addrs);
1729 const char *str = gai_strerror (e);
1730 freeaddrinfo (addrs);
1731 int fd = socket (AF_INET6, SOCK_STREAM, 0);
1732 connect (fd, (sockaddr *)&in6, sizeof (in6));]])],
1733 [ac_cv_af_inet6=yes],
1734 [ac_cv_af_inet6=no])])
1735 if test $ac_cv_af_inet6 = yes; then
1736 AC_DEFINE(HAVE_AF_INET6, 1,
1737 [Define if AF_INET6 supported.])
1740 # Check if _LK_LOCK is supported by _locking
1741 AC_CACHE_CHECK(for _LK_LOCK, ac_cv_lk_lock, [
1742 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1744 #include <sys/locking.h>]], [[
1746 return _locking (fd, _LK_LOCK, 0);]])],
1747 [ac_cv_lk_lock=yes],[ac_cv_lk_lock=no])])
1748 if test $ac_cv_lk_lock = yes; then
1749 AC_DEFINE(HOST_HAS_LK_LOCK, 1,
1750 [Define if _LK_LOC supported by _locking.])
1753 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1754 CFLAGS="$saved_CFLAGS"
1755 CXXFLAGS="$saved_CXXFLAGS"
1757 # mkdir takes a single argument on some systems.
1758 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1766 # With Setjmp/Longjmp based exception handling.
1767 AC_ARG_ENABLE(sjlj-exceptions,
1768 [AS_HELP_STRING([--enable-sjlj-exceptions],
1769 [arrange to use setjmp/longjmp exception handling])],
1772 if test $enableval != yes; then
1773 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1778 force_sjlj_exceptions=yes],
1781 force_sjlj_exceptions=yes
1785 force_sjlj_exceptions=yes
1789 force_sjlj_exceptions=no
1792 if test $force_sjlj_exceptions = yes; then
1793 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1794 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1795 [Define 0/1 to force the choice for exception handling model.])
1798 # --------------------------------------------------------
1799 # Build, host, and target specific configuration fragments
1800 # --------------------------------------------------------
1802 # Collect build-machine-specific information.
1803 . ${srcdir}/config.build || exit 1
1805 # Collect host-machine-specific information.
1806 . ${srcdir}/config.host || exit 1
1810 # Collect target-machine-specific information.
1811 . ${srcdir}/config.gcc || exit 1
1813 extra_objs="${host_extra_objs} ${extra_objs}"
1814 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1816 # Default the target-machine variables that were not explicitly set.
1817 if test x"$tm_file" = x
1818 then tm_file=$cpu_type/$cpu_type.h; fi
1820 if test x"$extra_headers" = x
1821 then extra_headers=; fi
1823 if test x$md_file = x
1824 then md_file=$cpu_type/$cpu_type.md; fi
1826 if test x$out_file = x
1827 then out_file=$cpu_type/$cpu_type.c; fi
1829 if test x"$tmake_file" = x
1830 then tmake_file=$cpu_type/t-$cpu_type
1833 # Support --enable-initfini-array.
1834 if test x$enable_initfini_array != xno; then
1835 tm_file="${tm_file} initfini-array.h"
1838 if test x"$dwarf2" = xyes
1839 then tm_file="$tm_file tm-dwarf2.h"
1842 # Say what files are being used for the output code and MD file.
1843 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1844 echo "Using \`$srcdir/config/$md_file' as machine description file."
1846 # If any of the xm_file variables contain nonexistent files, warn
1847 # about them and drop them.
1850 for x in $build_xm_file; do
1851 if test -f $srcdir/config/$x
1853 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1859 for x in $host_xm_file; do
1860 if test -f $srcdir/config/$x
1862 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1868 for x in $xm_file; do
1869 if test -f $srcdir/config/$x
1871 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1877 for f in $tm_file; do
1880 if test $count = ax; then
1881 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1883 echo "Using the following target machine macro files:"
1884 for f in $tm_file; do
1885 echo " $srcdir/config/$f"
1889 if test x$use_long_long_for_widest_fast_int = xyes; then
1890 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1891 [Define to 1 if the 'long long' type is wider than 'long' but still
1892 efficiently supported by the host hardware.])
1895 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1896 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1898 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1899 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1902 for f in $host_xm_file; do
1905 if test $count = a; then
1907 elif test $count = ax; then
1908 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1910 echo "Using the following host machine macro files:"
1911 for f in $host_xm_file; do
1912 echo " $srcdir/config/$f"
1915 echo "Using ${out_host_hook_obj} for host machine hooks."
1917 if test "$host_xm_file" != "$build_xm_file"; then
1919 for f in $build_xm_file; do
1922 if test $count = a; then
1924 elif test $count = ax; then
1925 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1927 echo "Using the following build machine macro files:"
1928 for f in $build_xm_file; do
1929 echo " $srcdir/config/$f"
1934 if test -n "$configured_native_system_header_dir"; then
1935 native_system_header_dir=$configured_native_system_header_dir
1937 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1938 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1942 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1943 gcc_cv_mcontext_underscores,
1944 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
1945 #include <sys/cdefs.h>
1946 #include <sys/signal.h>
1947 #include <ucontext.h>
1948 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1950 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1951 if test $gcc_cv_mcontext_underscores = yes; then
1952 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1953 [mcontext_t fields start with __])
1962 # Check if a valid thread package
1963 case ${enable_threads} in
1966 target_thread_file='single'
1970 target_thread_file='single'
1972 aix | dce | lynx | mipssde | posix | rtems | \
1973 single | tpf | vxworks | win32)
1974 target_thread_file=${enable_threads}
1977 echo "${enable_threads} is an unknown thread package" 1>&2
1982 if test x${thread_file} = x; then
1983 # No thread file set by target-specific clauses in config.gcc,
1984 # so use file chosen by default logic above
1985 thread_file=${target_thread_file}
1993 if test x$enable___cxa_atexit = xyes || \
1994 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1995 if test x$host = x$target; then
1997 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1998 # keyed to flag_use_cxa_atexit
2006 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
2007 [echo "__cxa_atexit can't be enabled on this target"])
2011 # We can't check for __cxa_atexit when building a cross, so assume
2015 if test x$use_cxa_atexit = xyes; then
2016 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
2017 [Define if you want to use __cxa_atexit, rather than atexit, to
2018 register C++ destructors for local statics and global objects.
2019 This is essential for fully standards-compliant handling of
2020 destructors, but requires __cxa_atexit in libc.])
2024 # Look for a file containing extra machine modes.
2025 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
2026 extra_modes_file='$(srcdir)'/config/${extra_modes}
2027 AC_SUBST(extra_modes_file)
2028 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
2029 [Define to the name of a file containing a list of extra machine modes
2030 for this architecture.])
2033 # Convert extra_options into a form suitable for Makefile use.
2036 for f in $extra_options; do
2037 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
2038 all_opt_files="$all_opt_files $srcdir/config/$f"
2040 AC_SUBST(extra_opt_files)
2042 # auto-host.h is the file containing items generated by autoconf and is
2043 # the first file included by config.h.
2044 # If host=build, it is correct to have bconfig include auto-host.h
2045 # as well. If host!=build, we are in error and need to do more
2046 # work to find out the build config parameters.
2047 if test x$host = x$build
2049 build_auto=auto-host.h
2050 HAVE_AUTO_BUILD='# '
2052 # We create a subdir, then run autoconf in the subdir.
2053 # To prevent recursion we set host and build for the new
2054 # invocation of configure to the build for this invocation
2061 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
2062 *) realsrcdir=../${srcdir};;
2064 # Clearing GMPINC is necessary to prevent host headers being
2065 # used by the build compiler. Defining GENERATOR_FILE stops
2066 # system.h from including gmp.h.
2067 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
2068 CXX="${CXX_FOR_BUILD}" CXXFLAGS="${CXXFLAGS_FOR_BUILD}" \
2069 LD="${LD_FOR_BUILD}" LDFLAGS="${LDFLAGS_FOR_BUILD}" \
2070 GMPINC="" CPPFLAGS="${CPPFLAGS_FOR_BUILD} -DGENERATOR_FILE" \
2071 ${realsrcdir}/configure \
2072 --enable-languages=${enable_languages-all} \
2073 ${enable_obsolete+--enable-obsolete="$enable_obsolete"} \
2074 ${enable_option_checking+--enable-option-checking="$enable_option_checking"} \
2075 --target=$target_alias --host=$build_alias \
2076 --build=$build_alias || exit # retaining $tempdir
2078 # We just finished tests for the build machine, so rename
2079 # the file auto-build.h in the gcc directory.
2080 mv auto-host.h ../auto-build.h
2083 build_auto=auto-build.h
2086 AC_SUBST(build_subdir)
2087 AC_SUBST(HAVE_AUTO_BUILD)
2089 tm_file="${tm_file} defaults.h"
2090 tm_p_file="${tm_p_file} tm-preds.h"
2091 tm_d_file="${tm_d_file} defaults.h"
2092 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
2093 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
2094 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
2095 # put this back in temporarily.
2096 xm_file="auto-host.h ansidecl.h ${xm_file}"
2103 # Compile in configure arguments.
2104 if test -f configargs.h ; then
2105 # Being re-configured.
2106 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
2107 gcc_reconf_arguments=`echo "$gcc_config_arguments" | sed -e 's/^.*\( : (reconfigured) .*$\)/\1/'`
2108 if [ "$gcc_reconf_arguments" != " : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS" ]; then
2109 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
2112 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
2115 # Double all backslashes and backslash all quotes to turn
2116 # gcc_config_arguments into a C string.
2117 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
2118 $gcc_config_arguments
2120 gcc_config_arguments_str=`cat conftest.out`
2123 cat > configargs.h <<EOF
2124 /* Generated automatically. */
2125 static const char configuration_arguments[] = "$gcc_config_arguments_str";
2126 static const char thread_model[] = "$thread_file";
2128 static const struct {
2129 const char *name, *value;
2130 } configure_default_options[] = $configure_default_options;
2135 gcc_BASEVER=`cat $srcdir/BASE-VER`
2136 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
2137 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
2138 if test -f $srcdir/REVISION ; then
2139 gcc_REVISION=`cat $srcdir/REVISION`
2143 cat > plugin-version.h <<EOF
2144 #include "configargs.h"
2146 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
2147 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
2148 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
2149 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
2151 static char basever[] = "$gcc_BASEVER";
2152 static char datestamp[] = "$gcc_DATESTAMP";
2153 static char devphase[] = "$gcc_DEVPHASE";
2154 static char revision[] = "$gcc_REVISION";
2156 /* FIXME plugins: We should make the version information more precise.
2157 One way to do is to add a checksum. */
2159 static struct plugin_gcc_version gcc_version = {basever, datestamp,
2161 configuration_arguments};
2165 # Determine what GCC version number to use in filesystem paths.
2168 # Internationalization
2169 ZW_GNU_GETTEXT_SISTER_DIR
2171 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
2172 # -liconv on the link line twice.
2173 case "$LIBINTL" in *$LIBICONV*)
2177 AC_ARG_ENABLE(secureplt,
2178 [AS_HELP_STRING([--enable-secureplt],
2179 [enable -msecure-plt by default for PowerPC])],
2182 AC_ARG_ENABLE(mingw-wildcard,
2183 [AS_HELP_STRING([--enable-mingw-wildcard],
2184 [Set whether to expand wildcard on command-line.
2185 Default to platform configuration])],
2186 [],[enable_mingw_wildcard=platform])
2187 AS_IF([test x"$enable_mingw_wildcard" != xplatform ],
2188 [AC_DEFINE_UNQUOTED(MINGW_DOWILDCARD,
2189 $(test x"$enable_mingw_wildcard" = xno; echo $?),
2190 [Value to set mingw's _dowildcard to.])])
2192 AC_ARG_ENABLE(large-address-aware,
2193 [AS_HELP_STRING([--enable-large-address-aware],
2194 [Link mingw executables with --large-address-aware])])
2195 AS_IF([test x"$enable_large_address_aware" = xyes],
2196 [AC_DEFINE([MINGW_DEFAULT_LARGE_ADDR_AWARE], 1,
2197 [Define if we should link mingw executables with --large-address-aware])])
2199 AC_ARG_ENABLE(leading-mingw64-underscores,
2200 AS_HELP_STRING([--enable-leading-mingw64-underscores],
2201 [enable leading underscores on 64 bit mingw targets]),
2203 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
2204 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
2205 [Define if we should use leading underscore on 64 bit mingw targets])])
2208 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
2211 AC_ARG_ENABLE(frame-pointer,
2212 [AS_HELP_STRING([--enable-frame-pointer],
2213 [enable -fno-omit-frame-pointer by default for x86])], [],
2216 linux* | gnu* | darwin[[8912]]* | cygwin* | mingw*)
2217 # Enable -fomit-frame-pointer by default for these systems with DWARF2.
2218 enable_frame_pointer=no
2221 enable_frame_pointer=yes
2227 i[[34567]]86-*-* | x86_64-*-*)
2228 if test "x$enable_cld" = xyes; then
2229 tm_defines="${tm_defines} USE_IX86_CLD=1"
2231 if test "x$enable_frame_pointer" = xyes; then
2232 tm_defines="${tm_defines} USE_IX86_FRAME_POINTER=1"
2237 # Windows32 Registry support for specifying GCC installation paths.
2238 AC_ARG_ENABLE(win32-registry,
2239 [AS_HELP_STRING([--disable-win32-registry],
2240 [disable lookup of installation paths in the
2241 Registry on Windows hosts])
2242 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
2243 AS_HELP_STRING([--enable-win32-registry=KEY],
2244 [use KEY instead of GCC version as the last portion
2245 of the registry key])],,)
2248 win32 | pe | cygwin* | mingw32*)
2249 if test "x$enable_win32_registry" != xno; then
2250 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
2253 if test "x$enable_win32_registry" != xno; then
2254 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
2255 [Define to 1 if installation paths should be looked up in the Windows
2256 Registry. Ignored on non-Windows hosts.])
2258 if test "x$enable_win32_registry" != xyes \
2259 && test "x$enable_win32_registry" != x; then
2260 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
2261 [Define to be the last component of the Windows registry key under which
2262 to look for installation paths. The full key used will be
2263 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
2264 The default is the GCC version number.])
2270 # Get an absolute path to the GCC top-level source directory
2271 holddir=`${PWDCMD-pwd}`
2273 topdir=`${PWDCMD-pwd}`
2276 # Conditionalize the makefile for this host machine.
2278 for f in ${host_xmake_file}
2280 if test -f ${srcdir}/config/$f
2282 xmake_file="${xmake_file} \$(srcdir)/config/$f"
2286 # Conditionalize the makefile for this target machine.
2288 for f in ${tmake_file}
2290 if test -f ${srcdir}/config/$f
2292 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
2295 tmake_file="${tmake_file_}${omp_device_property_tmake_file}"
2297 out_object_file=`basename $out_file .c`.o
2298 common_out_object_file=`basename $common_out_file .c`.o
2300 tm_file_list="options.h"
2301 tm_include_list="options.h insn-constants.h"
2302 for f in $tm_file; do
2305 f=`echo $f | sed 's/^..//'`
2306 tm_file_list="${tm_file_list} $f"
2307 tm_include_list="${tm_include_list} $f"
2310 tm_file_list="${tm_file_list} \$(srcdir)/$f"
2311 tm_include_list="${tm_include_list} $f"
2314 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
2315 tm_include_list="${tm_include_list} config/$f"
2322 for f in $tm_p_file; do
2325 tm_p_file_list="${tm_p_file_list} $f"
2326 tm_p_include_list="${tm_p_include_list} $f"
2329 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
2330 tm_p_include_list="${tm_p_include_list} config/$f"
2335 tm_d_include_list="options.h insn-constants.h"
2336 for f in $tm_d_file; do
2339 tm_d_file_list="${tm_d_file_list} \$(srcdir)/$f"
2340 tm_d_include_list="${tm_d_include_list} $f"
2343 tm_d_file_list="${tm_d_file_list} \$(srcdir)/config/$f"
2344 tm_d_include_list="${tm_d_include_list} config/$f"
2351 for f in $xm_file; do
2354 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
2355 xm_include_list="${xm_include_list} $f"
2358 xm_file_list="${xm_file_list} $f"
2359 xm_include_list="${xm_include_list} $f"
2362 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
2363 xm_include_list="${xm_include_list} config/$f"
2369 host_xm_include_list=
2370 for f in $host_xm_file; do
2373 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
2374 host_xm_include_list="${host_xm_include_list} $f"
2377 host_xm_file_list="${host_xm_file_list} $f"
2378 host_xm_include_list="${host_xm_include_list} $f"
2381 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
2382 host_xm_include_list="${host_xm_include_list} config/$f"
2388 for f in $build_xm_file; do
2391 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
2392 build_xm_include_list="${build_xm_include_list} $f"
2394 auto-build.h | auto-host.h )
2395 build_xm_file_list="${build_xm_file_list} $f"
2396 build_xm_include_list="${build_xm_include_list} $f"
2399 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
2400 build_xm_include_list="${build_xm_include_list} config/$f"
2405 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
2406 # cross-compiler which does not use the native headers and libraries.
2407 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
2408 CROSS= AC_SUBST(CROSS)
2409 ALL=all.internal AC_SUBST(ALL)
2410 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
2411 BUILD_SYSTEM_HEADER_DIR=$SYSTEM_HEADER_DIR AC_SUBST(BUILD_SYSTEM_HEADER_DIR)
2413 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x ||
2414 test x$build != x$host || test "x$with_build_sysroot" != x; then
2415 if test "x$with_build_sysroot" != x; then
2416 BUILD_SYSTEM_HEADER_DIR=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
2418 BUILD_SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2421 if test x$host != x$target
2423 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
2425 SYSTEM_HEADER_DIR=$BUILD_SYSTEM_HEADER_DIR
2426 elif test "x$TARGET_SYSTEM_ROOT" != x; then
2427 SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2430 if test "x$with_build_sysroot" != "x"; then
2431 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
2432 elif test "x$with_sysroot" = x; then
2433 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
2434 elif test "x$with_sysroot" = xyes; then
2435 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
2437 target_header_dir="${with_sysroot}${native_system_header_dir}"
2440 target_header_dir=${native_system_header_dir}
2443 # If this is a cross-compiler that does not
2444 # have its own set of headers then define
2447 # If this is using newlib, without having the headers available now,
2448 # then define inhibit_libc in LIBGCC2_CFLAGS.
2449 # This prevents libgcc2 from containing any code which requires libc
2451 : ${inhibit_libc=false}
2452 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
2453 test x$with_newlib = xyes ; } &&
2454 { test "x$with_headers" = xno || test ! -f "$target_header_dir/stdio.h"; } ; then
2457 AC_SUBST(inhibit_libc)
2459 # When building gcc with a cross-compiler, we need to adjust things so
2460 # that the generator programs are still built with the native compiler.
2461 # Also, we cannot run fixincludes.
2463 # These are the normal (build=host) settings:
2464 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
2465 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
2466 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
2467 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
2468 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
2469 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
2471 # And these apply if build != host, or we are generating coverage data
2472 if test x$build != x$host || test "x$coverage_flags" != x
2474 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS-$@) $(CFLAGS_FOR_BUILD)'
2475 BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS-$@) $(CXXFLAGS_FOR_BUILD)'
2476 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
2479 # Expand extra_headers to include complete path.
2480 # This substitutes for lots of t-* files.
2482 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
2483 for file in ${extra_headers} ; do
2484 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
2487 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
2488 if test x"$use_gcc_tgmath" = xyes
2489 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
2492 # Define collect2 in Makefile.
2493 case $host_can_use_collect2 in
2495 *) collect2='collect2$(exeext)' ;;
2497 AC_SUBST([collect2])
2499 # Add a definition of USE_COLLECT2 if system wants one.
2500 case $use_collect2 in
2501 no) use_collect2= ;;
2504 host_xm_defines="${host_xm_defines} USE_COLLECT2"
2505 xm_defines="${xm_defines} USE_COLLECT2"
2506 case $host_can_use_collect2 in
2508 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
2514 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
2515 [Define to the name of the LTO plugin DSO that must be
2516 passed to the linker's -plugin=LIB option.])
2518 # ---------------------------
2519 # Assembler & linker features
2520 # ---------------------------
2522 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
2523 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
2524 # However when ld-new is first executed from the build tree, libtool will
2525 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
2526 # to the build tree. While doing this we need to use the previous-stage
2527 # linker, or we have an infinite loop. The presence of a shell script as
2528 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
2529 # the gcc/collect-ld script. So we need to know how libtool works, or
2530 # exec-tool will fail.
2532 m4_defun([_LT_CONFIG_COMMANDS], [])
2535 AC_SUBST(enable_fast_install)
2537 # Identify the assembler which will work hand-in-glove with the newly
2538 # built GCC, so that we can examine its features. This is the assembler
2539 # which will be driven by the driver program.
2541 # If build != host, and we aren't building gas in-tree, we identify a
2542 # build->target assembler and hope that it will have the same features
2543 # as the host->target assembler we'll be using.
2544 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
2546 m4_pattern_allow([AS_FOR_TARGET])dnl
2547 AS_VAR_SET_IF(gcc_cv_as,, [
2548 if test -x "$DEFAULT_ASSEMBLER"; then
2549 gcc_cv_as="$DEFAULT_ASSEMBLER"
2550 elif test -f $gcc_cv_as_gas_srcdir/configure.ac \
2551 && test -f ../gas/Makefile \
2552 && test x$build = x$host; then
2553 gcc_cv_as=../gas/as-new$build_exeext
2554 elif test -x as$build_exeext; then
2555 # Build using assembler in the current directory.
2556 gcc_cv_as=./as$build_exeext
2557 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
2558 gcc_cv_as="$AS_FOR_TARGET"
2560 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
2563 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
2564 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
2565 case "$ORIGINAL_AS_FOR_TARGET" in
2566 ./as | ./as$build_exeext) ;;
2567 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2572 [[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]],
2573 [case "${enableval}" in
2579 install_gold_as_default=no
2581 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
2582 [case "${enableval}" in
2584 install_gold_as_default=yes
2587 if test x${default_ld} != x; then
2588 install_gold_as_default=yes
2594 AC_MSG_ERROR([invalid --enable-gold argument])
2598 # Identify the linker which will work hand-in-glove with the newly
2599 # built GCC, so that we can examine its features. This is the linker
2600 # which will be driven by the driver program.
2602 # If build != host, and we aren't building gas in-tree, we identify a
2603 # build->target linker and hope that it will have the same features
2604 # as the host->target linker we'll be using.
2605 gcc_cv_gld_major_version=
2606 gcc_cv_gld_minor_version=
2607 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2608 gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold
2609 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2611 AS_VAR_SET_IF(gcc_cv_ld,, [
2612 if test -x "$DEFAULT_LINKER"; then
2613 gcc_cv_ld="$DEFAULT_LINKER"
2614 elif test $install_gold_as_default = yes \
2615 && test -f $gcc_cv_ld_gold_srcdir/configure.ac \
2616 && test -f ../gold/Makefile \
2617 && test x$build = x$host; then
2618 gcc_cv_ld=../gold/ld-new$build_exeext
2619 elif test -f $gcc_cv_ld_gld_srcdir/configure.ac \
2620 && test -f ../ld/Makefile \
2621 && test x$build = x$host; then
2622 gcc_cv_ld=../ld/ld-new$build_exeext
2623 elif test -x collect-ld$build_exeext; then
2624 # Build using linker in the current directory.
2625 gcc_cv_ld=./collect-ld$build_exeext
2626 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2627 gcc_cv_ld="$LD_FOR_TARGET"
2629 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2632 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2633 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2634 # if the PLUGIN_LD is set ld-new, just have it as ld
2635 # as that is the installed named.
2636 if test x$PLUGIN_LD_SUFFIX = xld-new \
2637 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2640 AC_ARG_WITH(plugin-ld,
2641 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2642 [if test x"$withval" != x; then
2643 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2644 PLUGIN_LD_SUFFIX="$withval"
2646 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2647 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2649 # Check to see if we are using gold instead of ld
2650 AC_MSG_CHECKING(whether we are using gold)
2652 if test x$gcc_cv_ld != x; then
2653 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2654 | grep "GNU gold" > /dev/null; then
2658 AC_MSG_RESULT($ld_is_gold)
2660 AC_MSG_CHECKING(gold linker with split stack support as non default)
2661 # Check to see if default ld is not gold, but gold is
2662 # available and has support for split stack. If gcc was configured
2663 # with gold then no checking is done.
2665 if test x$ld_is_gold = xno && which ${gcc_cv_ld}.gold >/dev/null 2>&1; then
2667 # For platforms other than powerpc64*, enable as appropriate.
2670 ld_gold=`which ${gcc_cv_ld}.gold`
2671 # Make sure this gold has minimal split stack support
2672 if $ld_gold --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then
2673 ld_vers=`$ld_gold --version | sed 1q`
2674 gold_vers=`echo $ld_vers | sed -n \
2675 -e 's,^[[^)]]*[[ ]]\([[0-9]][[0-9]]*\.[[0-9]][[0-9]]*[[^)]]*\)) .*$,\1,p'`
2677 # check that the gold version contains the complete split stack support
2678 # on powerpc64 big and little endian
2680 case "$gold_vers" in
2681 2.25.[[1-9]]*|2.2[[6-9]][[.0-9]]*|2.[[3-9]][[.0-9]]*|[[3-9]].[[.0-9]]*) gold_non_default=yes
2683 *) gold_non_default=no
2689 if test $gold_non_default = yes; then
2690 AC_DEFINE(HAVE_GOLD_NON_DEFAULT_SPLIT_STACK, 1,
2691 [Define if the gold linker supports split stack and is available as a non-default])
2694 AC_MSG_RESULT($gold_non_default)
2696 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2697 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2698 case "$ORIGINAL_LD_FOR_TARGET" in
2699 ./collect-ld | ./collect-ld$build_exeext) ;;
2700 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2703 AC_MSG_CHECKING(what linker to use)
2704 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2705 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2706 # Single tree build which includes ld. We want to prefer it
2707 # over whatever linker top-level may have detected, since
2708 # we'll use what we're building after installation anyway.
2709 AC_MSG_RESULT(newly built ld)
2711 in_tree_ld_is_elf=no
2712 if (grep 'EMUL = .*elf' ../ld/Makefile \
2713 || grep 'EMUL = .*linux' ../ld/Makefile \
2714 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2715 in_tree_ld_is_elf=yes
2716 elif test "$ld_is_gold" = yes; then
2717 in_tree_ld_is_elf=yes
2719 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
2722 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2723 if test x$gcc_cv_gld_version != x; then
2727 case $gcc_cv_gld_version in
2730 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2733 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2734 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2736 ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext
2737 ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext
2739 AC_MSG_RESULT($gcc_cv_ld)
2741 gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext`
2742 ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext
2743 ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext
2746 AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET)
2747 AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET)
2749 # Figure out what nm we will be using.
2750 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2751 AS_VAR_SET_IF(gcc_cv_nm,, [
2752 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2753 && test -f ../binutils/Makefile \
2754 && test x$build = x$host; then
2755 gcc_cv_nm=../binutils/nm-new$build_exeext
2756 elif test -x nm$build_exeext; then
2757 gcc_cv_nm=./nm$build_exeext
2758 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2759 gcc_cv_nm="$NM_FOR_TARGET"
2761 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2764 AC_MSG_CHECKING(what nm to use)
2765 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2766 # Single tree build which includes binutils.
2767 AC_MSG_RESULT(newly built nm)
2770 AC_MSG_RESULT($gcc_cv_nm)
2774 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2775 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2776 case "$ORIGINAL_NM_FOR_TARGET" in
2777 ./nm | ./nm$build_exeext) ;;
2778 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2782 # Figure out what objdump we will be using.
2783 AS_VAR_SET_IF(gcc_cv_objdump,, [
2784 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2785 && test -f ../binutils/Makefile \
2786 && test x$build = x$host; then
2787 # Single tree build which includes binutils.
2788 gcc_cv_objdump=../binutils/objdump$build_exeext
2789 elif test -x objdump$build_exeext; then
2790 gcc_cv_objdump=./objdump$build_exeext
2791 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2792 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2794 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2797 AC_MSG_CHECKING(what objdump to use)
2798 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2799 # Single tree build which includes binutils.
2800 AC_MSG_RESULT(newly built objdump)
2801 elif test x$gcc_cv_objdump = x; then
2802 AC_MSG_RESULT(not found)
2804 AC_MSG_RESULT($gcc_cv_objdump)
2807 # Figure out what readelf we will be using.
2808 AS_VAR_SET_IF(gcc_cv_readelf,, [
2809 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2810 && test -f ../binutils/Makefile \
2811 && test x$build = x$host; then
2812 # Single tree build which includes binutils.
2813 gcc_cv_readelf=../binutils/readelf$build_exeext
2814 elif test -x readelf$build_exeext; then
2815 gcc_cv_readelf=./readelf$build_exeext
2816 elif ( set dummy $READELF_FOR_TARGET; test -x $[2] ); then
2817 gcc_cv_readelf="$READELF_FOR_TARGET"
2819 AC_PATH_PROG(gcc_cv_readelf, $READELF_FOR_TARGET)
2822 AC_MSG_CHECKING(what readelf to use)
2823 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2824 # Single tree build which includes binutils.
2825 AC_MSG_RESULT(newly built readelf)
2826 elif test x$gcc_cv_readelf = x; then
2827 AC_MSG_RESULT(not found)
2829 AC_MSG_RESULT($gcc_cv_readelf)
2832 # Figure out what otool we will be using.
2833 AS_VAR_SET_IF(gcc_cv_otool,, [
2834 if test -x otool$build_exeext; then
2835 gcc_cv_otool=./otool$build_exeext
2836 elif ( set dummy $OTOOL_FOR_TARGET; test -x $[2] ); then
2837 gcc_cv_otool="$OTOOL_FOR_TARGET"
2839 AC_PATH_PROG(gcc_cv_otool, $OTOOL_FOR_TARGET)
2842 AC_MSG_CHECKING(what otool to use)
2843 if test x$gcc_cv_otool = x; then
2844 AC_MSG_RESULT(not found)
2846 AC_MSG_RESULT($gcc_cv_otool)
2849 # Figure out the dsymutil we will use.
2850 AS_VAR_SET_IF(gcc_cv_dsymutil,, [
2851 if test -x "$DEFAULT_DSYMUTIL"; then
2852 gcc_cv_dsymutil="$DEFAULT_DSYMUTIL"
2853 elif test -x dsymutil$build_exeext; then
2854 gcc_cv_dsymutil=./dsymutil$build_exeext
2855 elif ( set dummy $DSYMUTIL_FOR_TARGET; test -x $[2] ); then
2856 gcc_cv_dsymutil=$DSYMUTIL_FOR_TARGET
2857 elif ( set dummy $DSYMUTIL; test -x $[2] ); then
2858 gcc_cv_dsymutil=$DSYMUTIL
2860 AC_PATH_PROG(gcc_cv_dsymutil, $DSYMUTIL_FOR_TARGET)
2863 ORIGINAL_DSYMUTIL_FOR_TARGET=$gcc_cv_dsymutil
2864 AC_SUBST(ORIGINAL_DSYMUTIL_FOR_TARGET)
2865 case "$ORIGINAL_DSYMUTIL_FOR_TARGET" in
2866 ./dsymutil | ./dsymutil$build_exeext) ;;
2867 *) AC_CONFIG_FILES(dsymutil:exec-tool.in, [chmod +x dsymutil]) ;;
2870 # Figure out what assembler alignment features are present.
2871 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,,
2874 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2875 [Define if your assembler supports .balign and .p2align.])])
2877 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,,
2879 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2880 [Define if your assembler supports specifying the maximum number
2881 of bytes to skip when using the GAS .p2align command.])])
2883 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,,
2885 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2886 [Define if your assembler supports .literal16.])])
2888 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,,
2889 [conftest_label1: .word 0
2891 conftest_label2: .word 0
2893 [if test x$gcc_cv_nm != x; then
2894 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2895 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2896 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2898 else gcc_cv_as_subsection_m1=yes
2900 rm -f conftest.nm1 conftest.nm2
2902 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2903 [Define if your assembler supports .subsection and .subsection -1 starts
2904 emitting at the beginning of your section.])])
2906 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,,
2908 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2910 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,,
2911 [ .weakref foobar, barfnot],,
2912 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2914 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,,
2916 .NSUBSPA $CODE$,COMDAT],,
2917 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2919 # .hidden needs to be supported in both the assembler and the linker,
2920 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2921 # This is irritatingly difficult to feature test for; we have to check the
2922 # date string after the version number. If we've got an in-tree
2923 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2925 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2928 conftest_s=' .globl foobar,hidden'
2931 conftest_s=' .hidden foobar
2935 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,, [$conftest_s])
2938 # Darwin as has some visibility support, though with a different syntax.
2939 gcc_cv_as_hidden=yes
2943 # gnu_indirect_function type is an extension proposed at
2944 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2945 # selection of function implementation
2946 AC_ARG_ENABLE(gnu-indirect-function,
2947 [AS_HELP_STRING([--enable-gnu-indirect-function],
2948 [enable the use of the @gnu_indirect_function to glibc systems])],
2949 [case $enable_gnu_indirect_function in
2951 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2952 Valid choices are 'yes' and 'no'.]) ;;
2954 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2958 AC_MSG_CHECKING(linker ifunc IRELATIVE support)
2959 cat > conftest.s <<EOF
2961 .type foo_resolver, @function
2964 .size foo_resolver, .-foo_resolver
2967 .type foo, %gnu_indirect_function
2968 .set foo, foo_resolver
2971 .type bar, @function
2977 if test x$gcc_cv_as != x \
2978 && test x$gcc_cv_ld != x \
2979 && test x$gcc_cv_readelf != x \
2980 && $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2981 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1 \
2982 && $gcc_cv_readelf --relocs --wide conftest \
2983 | grep R_RISCV_IRELATIVE > /dev/null 2>&1; then
2984 enable_gnu_indirect_function=yes
2986 rm -f conftest conftest.o conftest.s
2987 AC_MSG_RESULT($enable_gnu_indirect_function)
2991 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
2992 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
2993 [Define if your system supports gnu indirect functions.])
2997 if test $in_tree_ld != yes ; then
2998 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2999 if echo "$ld_ver" | grep GNU > /dev/null; then
3000 if test x"$ld_is_gold" = xyes; then
3001 # GNU gold --version looks like this:
3003 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
3005 # We extract the binutils version which is more familiar and specific
3006 # than the gold version.
3007 ld_vers=`echo $ld_ver | sed -n \
3008 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3010 # GNU ld --version looks like this:
3012 # GNU ld (GNU Binutils) 2.21.51.20110225
3013 ld_vers=`echo $ld_ver | sed -n \
3014 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3016 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)\(-*\)\([01][0-9]\)\2\([0-3][0-9]\).*$,\1\3\4,p'`
3017 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3018 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3019 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
3023 # Solaris 2 ld -V output looks like this for a regular version:
3025 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
3027 # but test versions add stuff at the end:
3029 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
3031 # ld and ld.so.1 are guaranteed to be updated in lockstep, so ld version
3032 # numbers can be used in ld.so.1 feature checks even if a different
3033 # linker is configured.
3034 ld_ver=`$gcc_cv_ld -V 2>&1`
3035 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
3036 ld_vers=`echo $ld_ver | sed -n \
3037 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
3038 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3039 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3047 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
3048 [[if test $in_tree_ld = yes ; then
3050 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
3051 && test $in_tree_ld_is_elf = yes; then
3052 gcc_cv_ld_hidden=yes
3055 gcc_cv_ld_hidden=yes
3056 if test x"$ld_is_gold" = xyes; then
3058 elif echo "$ld_ver" | grep GNU > /dev/null; then
3059 if test 0"$ld_date" -lt 20020404; then
3060 if test -n "$ld_date"; then
3061 # If there was date string, but was earlier than 2002-04-04, fail
3063 elif test -z "$ld_vers"; then
3064 # If there was no date string nor ld version number, something is wrong
3067 test -z "$ld_vers_patch" && ld_vers_patch=0
3068 if test "$ld_vers_major" -lt 2; then
3070 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
3071 gcc_cv_ld_hidden="no"
3072 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
3080 gcc_cv_ld_hidden=yes
3083 # Darwin ld has some visibility support.
3084 gcc_cv_ld_hidden=yes
3086 hppa64*-*-hpux* | ia64*-*-hpux*)
3087 gcc_cv_ld_hidden=yes
3090 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
3091 # .symbolic was only added in Solaris 9 12/02.
3092 gcc_cv_ld_hidden=yes
3100 libgcc_visibility=no
3101 AC_SUBST(libgcc_visibility)
3102 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
3103 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
3104 libgcc_visibility=yes
3105 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
3106 [Define if your assembler and linker support .hidden.])
3109 AC_MSG_CHECKING(linker read-only and read-write section mixing)
3110 gcc_cv_ld_ro_rw_mix=unknown
3111 if test $in_tree_ld = yes ; then
3112 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
3113 && test $in_tree_ld_is_elf = yes; then
3114 gcc_cv_ld_ro_rw_mix=read-write
3116 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3117 echo '.section myfoosect, "a"' > conftest1.s
3118 echo '.section myfoosect, "aw"' > conftest2.s
3119 echo '.byte 1' >> conftest2.s
3120 echo '.section myfoosect, "a"' > conftest3.s
3121 echo '.byte 0' >> conftest3.s
3122 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
3123 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
3124 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
3125 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
3126 conftest2.o conftest3.o > /dev/null 2>&1; then
3127 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
3128 | sed -e '/myfoosect/!d' -e N`
3129 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
3130 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
3131 gcc_cv_ld_ro_rw_mix=read-only
3133 gcc_cv_ld_ro_rw_mix=read-write
3138 rm -f conftest.* conftest[123].*
3141 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
3142 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
3143 [Define if your linker links a mix of read-only
3144 and read-write sections into a read-write section.])
3146 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
3148 gcc_AC_INITFINI_ARRAY
3150 # Check if we have .[us]leb128, and support symbol arithmetic with it.
3151 # Older versions of GAS and some non-GNU assemblers, have a bugs handling
3152 # these directives, even when they appear to accept them.
3153 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,,
3160 .uleb128 0x8000000000000000
3163 if test "x$gcc_cv_objdump" != x; then
3164 if $gcc_cv_objdump -s conftest.o 2>/dev/null \
3165 | grep '04800a8e 78808080 80808080 808001' >/dev/null; then
3166 gcc_cv_as_leb128=yes
3168 elif test "x$gcc_cv_otool" != x; then
3169 if $gcc_cv_otool -d conftest.o 2>/dev/null \
3170 | grep '04 80 0a 8e 78 80 80 80 80 80 80 80 80 80 01' >/dev/null; then
3171 gcc_cv_as_leb128=yes
3174 # play safe, assume the assembler is broken.
3178 [AC_DEFINE(HAVE_AS_LEB128, 1,
3179 [Define if your assembler supports .sleb128 and .uleb128.])],
3180 [AC_DEFINE(HAVE_AS_LEB128, 0,
3181 [Define if your assembler supports .sleb128 and .uleb128.])])
3183 # Determine if an .eh_frame section is read-only.
3184 gcc_fn_eh_frame_ro () {
3185 $gcc_cv_as $1 -o conftest.o conftest.s > /dev/null 2>&1 && \
3186 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
3187 sed -e '/.eh_frame/!d' -e N | grep READONLY > /dev/null
3190 # Check if we have assembler support for unwind directives.
3191 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,,
3197 .cfi_escape 1, 2, 3, 4, 5
3201 # If the linker used on Solaris (like Sun ld) isn't capable of merging
3202 # read-only and read-write sections, we need to make sure that the
3203 # assembler used emits read-write .eh_frame sections.
3204 if test "x$gcc_cv_ld_ro_rw_mix" = xread-write; then
3205 gcc_cv_as_cfi_directive=yes
3206 elif test "x$gcc_cv_objdump" = x; then
3207 # No objdump, err on the side of caution.
3208 gcc_cv_as_cfi_directive=no
3210 if test x$gas = xyes; then
3218 sparc*-*-solaris2.*)
3219 # On Solaris/SPARC, .eh_frame sections should always be read-write.
3220 if gcc_fn_eh_frame_ro $as_32_opt \
3221 || gcc_fn_eh_frame_ro $as_64_opt; then
3222 gcc_cv_as_cfi_directive=no
3224 gcc_cv_as_cfi_directive=yes
3227 i?86-*-solaris2.* | x86_64-*-solaris2.*)
3228 # On Solaris/x86, make sure that GCC and assembler agree on using
3229 # read-only .eh_frame sections for 64-bit.
3230 if gcc_fn_eh_frame_ro $as_32_opt; then
3231 gcc_cv_as_cfi_directive=no
3232 elif gcc_fn_eh_frame_ro $as_64_opt; then
3233 gcc_cv_as_cfi_directive=yes
3235 gcc_cv_as_cfi_directive=no
3242 gcc_cv_as_cfi_directive=yes
3245 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
3246 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,,
3249 .cfi_adjust_cfa_offset 64
3251 .cfi_adjust_cfa_offset 128
3254 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
3255 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
3256 gcc_cv_as_cfi_advance_working=yes
3260 # no objdump, err on the side of caution
3261 gcc_cv_as_cfi_advance_working=no
3263 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
3264 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
3265 [`if test $gcc_cv_as_cfi_directive = yes \
3266 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
3267 [Define 0/1 if your assembler supports CFI directives.])
3269 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
3270 gcc_GAS_CHECK_FEATURE([cfi personality directive],
3271 gcc_cv_as_cfi_personality_directive,,
3274 .cfi_personality 0, symbol
3276 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
3277 [`if test $gcc_cv_as_cfi_personality_directive = yes; then echo 1; else echo 0; fi`],
3278 [Define 0/1 if your assembler supports .cfi_personality.])
3280 gcc_GAS_CHECK_FEATURE([cfi sections directive],
3281 gcc_cv_as_cfi_sections_directive,,
3283 .cfi_sections .debug_frame, .eh_frame
3287 win32 | pe | cygwin* | mingw32*)
3288 # Need to check that we generated the correct relocation for the
3289 # .debug_frame section. This was fixed for binutils 2.21.
3290 gcc_cv_as_cfi_sections_directive=no
3291 if test "x$gcc_cv_objdump" != x; then
3292 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
3293 grep secrel > /dev/null; then
3294 gcc_cv_as_cfi_sections_directive=yes
3299 gcc_cv_as_cfi_sections_directive=yes
3302 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
3303 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
3304 [`if test $gcc_cv_as_cfi_sections_directive = yes; then echo 1; else echo 0; fi`],
3305 [Define 0/1 if your assembler supports .cfi_sections.])
3307 # GAS versions up to and including 2.11.0 may mis-optimize
3309 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,,
3316 .section .eh_frame,"aw",@progbits
3318 .4byte .LECIE1-.LSCIE1
3332 .4byte .LEFDE1-.LASFDE1
3334 .4byte .LASFDE1-__FRAME_BEGIN__
3342 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
3343 cat > conftest.lit <<EOF
3344 0000 10000000 00000000 017a0001 781a0004 .........z..x...
3345 0010 01000000 12000000 18000000 00000000 ................
3346 0020 08000000 04080000 0044 .........D @&t@
3348 cat > conftest.big <<EOF
3349 0000 00000010 00000000 017a0001 781a0004 .........z..x...
3350 0010 00000001 00000012 00000018 00000000 ................
3351 0020 00000008 04000000 0844 .........D @&t@
3353 # If the assembler didn't choke, and we can objdump,
3354 # and we got the correct data, then succeed.
3355 # The text in the here-document typically retains its unix-style line
3356 # endings, while the output of objdump will use host line endings.
3357 # Therefore, use diff -b for the comparisons.
3358 if test x$gcc_cv_objdump != x \
3359 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
3360 | tail -3 > conftest.got \
3361 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
3362 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
3364 gcc_cv_as_eh_frame=yes
3365 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
3366 gcc_cv_as_eh_frame=buggy
3368 # Uh oh, what do we do now?
3369 gcc_cv_as_eh_frame=no
3372 if test $gcc_cv_as_eh_frame = buggy; then
3373 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
3374 [Define if your assembler mis-optimizes .eh_frame data.])
3377 # Test if the assembler supports the section flag 'e' or #exclude for
3378 # specifying an excluded section.
3379 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_e,
3383 if test $gcc_cv_as_section_exclude_e = no; then
3385 # Solaris as uses #exclude instead.
3389 conftest_s='.section "foo1", #exclude'
3391 i?86-*-solaris2* | x86_64-*-solaris2*)
3392 conftest_s='.section foo1, #exclude'
3397 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_hash,,
3401 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3402 [`if test $gcc_cv_as_section_exclude_e = yes || test $gcc_cv_as_section_exclude_hash = yes; then echo 1; else echo 0; fi`],
3403 [Define if your assembler supports specifying the exclude section flag.])
3405 # Test if the assembler supports the section flag 'R' for specifying
3406 # section with SHF_GNU_RETAIN.
3408 # Solaris may use GNU assembler with Solairs ld. Even if GNU
3409 # assembler supports the section flag 'R', it doesn't mean that
3410 # Solairs ld supports it.
3412 gcc_cv_as_shf_gnu_retain=no
3415 gcc_GAS_CHECK_FEATURE([section 'R' flag], gcc_cv_as_shf_gnu_retain,
3417 [.section .foo,"awR",%progbits
3421 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_GNU_RETAIN,
3422 [`if test $gcc_cv_as_shf_gnu_retain = yes; then echo 1; else echo 0; fi`],
3423 [Define 0/1 if your assembler supports marking sections with SHF_GNU_RETAIN flag.])
3425 # Test if the assembler supports the section flag 'o' for specifying
3426 # section with link-order.
3428 # Solaris may use GNU assembler with Solairs ld. Even if GNU
3429 # assembler supports the section flag 'o', it doesn't mean that
3430 # Solairs ld supports it.
3432 gcc_cv_as_section_link_order=no
3435 gcc_GAS_CHECK_FEATURE([section 'o' flag], gcc_cv_as_section_link_order,
3439 .section __patchable_function_entries,"awo",%progbits,.foo
3443 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_LINK_ORDER,
3444 [`if test $gcc_cv_as_section_link_order = yes; then echo 1; else echo 0; fi`],
3445 [Define 0/1 if your assembler supports 'o' flag in .section directive.])
3447 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
3449 [.section .rodata.str, "aMS", @progbits, 1])
3450 if test $gcc_cv_as_shf_merge = no; then
3451 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
3453 [.section .rodata.str, "aMS", %progbits, 1])
3455 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
3456 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
3457 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
3459 gcc_cv_ld_aligned_shf_merge=yes
3461 # SHF_MERGE support is broken in Solaris ld up to Solaris 11.3/SPARC for
3463 sparc*-*-solaris2.11*)
3464 if test x"$gnu_ld" = xno \
3465 && test "$ld_vers_major" -lt 2 && test "$ld_vers_minor" -lt 3159; then
3466 gcc_cv_ld_aligned_shf_merge=no
3470 AC_DEFINE_UNQUOTED(HAVE_LD_ALIGNED_SHF_MERGE,
3471 [`if test $gcc_cv_ld_aligned_shf_merge = yes; then echo 1; else echo 0; fi`],
3472 [Define 0/1 if your linker supports the SHF_MERGE flag with section alignment > 1.])
3474 gcc_GAS_CHECK_FEATURE([stabs directive], gcc_cv_as_stabs_directive,,
3475 [.stabs "gcc2_compiled.",60,0,0,0],,
3476 [AC_DEFINE(HAVE_AS_STABS_DIRECTIVE, 1,
3477 [Define if your assembler supports .stabs.])])
3479 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
3480 gcc_cv_as_comdat_group,
3482 [.section .text,"axG",@progbits,.foo,comdat])
3483 if test $gcc_cv_as_comdat_group = yes; then
3484 gcc_cv_as_comdat_group_percent=no
3485 gcc_cv_as_comdat_group_group=no
3487 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
3488 gcc_cv_as_comdat_group_percent,
3490 [.section .text,"axG",%progbits,.foo,comdat])
3491 if test $gcc_cv_as_comdat_group_percent = yes; then
3492 gcc_cv_as_comdat_group_group=no
3495 # Sun as uses a completely different syntax.
3500 .group foo,".text%foo",#comdat
3501 .section ".text%foo", #alloc,#execinstr,#progbits
3506 i?86-*-solaris2* | x86_64-*-solaris2*)
3508 .group foo,.text%foo,#comdat
3509 .section .text%foo, "ax", @progbits
3515 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
3516 gcc_cv_as_comdat_group_group,
3520 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
3521 gcc_cv_as_comdat_group_group=no
3525 if test x"$ld_is_gold" = xyes; then
3527 elif test $in_tree_ld = yes ; then
3529 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3530 && test $in_tree_ld_is_elf = yes; then
3533 elif echo "$ld_ver" | grep GNU > /dev/null; then
3535 if test 0"$ld_date" -lt 20050308; then
3536 if test -n "$ld_date"; then
3537 # If there was date string, but was earlier than 2005-03-08, fail
3539 elif test "$ld_vers_major" -lt 2; then
3541 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
3548 *-*-solaris2.1[1-9]*)
3550 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
3551 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
3554 # If using Sun as for COMDAT group as emitted by GCC, one needs at
3555 # least ld version 1.2267.
3556 if test "$ld_vers_major" -gt 1; then
3558 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
3560 elif test "$ld_vers_minor" -ge 2267; then
3565 # Assume linkers other than GNU ld don't support COMDAT group.
3571 # Allow overriding the automatic COMDAT group tests above.
3572 AC_ARG_ENABLE(comdat,
3573 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
3574 [comdat_group="$enable_comdat"])
3575 if test $comdat_group = no; then
3576 gcc_cv_as_comdat_group=no
3577 gcc_cv_as_comdat_group_percent=no
3578 gcc_cv_as_comdat_group_group=no
3580 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
3581 [`if test $gcc_cv_as_comdat_group = yes \
3582 || test $gcc_cv_as_comdat_group_percent = yes \
3583 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
3584 [Define 0/1 if your assembler and linker support COMDAT groups.])
3586 # Restrict this test to Solaris/x86: other targets define this statically.
3588 i?86-*-solaris2* | x86_64-*-solaris2*)
3589 AC_MSG_CHECKING(support for hidden thunks in linkonce sections)
3590 if test $in_tree_ld = yes || echo "$ld_ver" | grep GNU > /dev/null; then
3594 # Full support for hidden thunks in linkonce sections only appeared in
3595 # Solaris 11/OpenSolaris.
3596 *-*-solaris2.1[[1-9]]*)
3604 AC_MSG_RESULT($hidden_linkonce)
3605 AC_DEFINE_UNQUOTED(USE_HIDDEN_LINKONCE,
3606 [`if test $hidden_linkonce = yes; then echo 1; else echo 0; fi`],
3607 [Define 0/1 if your linker supports hidden thunks in linkonce sections.])
3611 gcc_GAS_CHECK_FEATURE([line table is_stmt support],
3615 .loc 1 1 0 is_stmt 1],,
3616 [AC_DEFINE(HAVE_GAS_LOC_STMT, 1,
3617 [Define if your assembler supports the .loc is_stmt sub-directive.])])
3619 gcc_GAS_CHECK_FEATURE([line table discriminator support],
3620 gcc_cv_as_discriminator,,
3623 .loc 1 1 0 discriminator 1],,
3624 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
3625 [Define if your assembler supports the .loc discriminator sub-directive.])])
3627 # Catch the newlib flag of the same name so we can gate GCC features on it.
3628 AC_ARG_ENABLE(newlib-nano-formatted-io,
3629 [AS_HELP_STRING([--enable-newlib-nano-formatted-io], [Use nano version
3631 [case "${enableval}" in
3635 AC_MSG_ERROR([unknown newlib-nano-formatted-io setting $enableval])
3639 # Thread-local storage - the check is heavily parameterized.
3646 .section ".tdata","awT",@progbits
3649 ldq $27,__tls_get_addr($29) !literal!1
3650 lda $16,foo($29) !tlsgd!1
3651 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
3652 ldq $27,__tls_get_addr($29) !literal!2
3653 lda $16,foo($29) !tlsldm!2
3654 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
3655 ldq $1,foo($29) !gotdtprel
3656 ldah $2,foo($29) !dtprelhi
3657 lda $3,foo($2) !dtprello
3658 lda $4,foo($29) !dtprel
3659 ldq $1,foo($29) !gottprel
3660 ldah $2,foo($29) !tprelhi
3661 lda $3,foo($2) !tprello
3662 lda $4,foo($29) !tprel'
3663 tls_as_opt=--fatal-warnings
3667 add_s r0,r0, @foo@tpoff'
3669 cris-*-*|crisv32-*-*)
3671 .section ".tdata","awT",@progbits
3676 tls_as_opt=--fatal-warnings
3680 .section ".tdata","awT",@progbits
3690 .section ".tdata","awT",@progbits
3694 addil LT%foo-$tls_gdidx$,gp
3695 ldo RT%foo-$tls_gdidx$(%r1),%arg0
3698 addil LT%foo-$tls_ldidx$,gp
3700 ldo RT%foo-$tls_ldidx$(%r1),%arg0
3701 addil LR%foo-$tls_dtpoff$,%ret0
3702 ldo RR%foo-$tls_dtpoff$(%r1),%t1
3704 addil LT%foo-$tls_ieoff$,gp
3705 ldw RT%foo-$tls_ieoff$(%r1),%t2
3708 addil LR%foo-$tls_leoff$,%t1
3709 ldo RR%foo-$tls_leoff$(%r1),%t2'
3710 tls_as_opt=--fatal-warnings
3714 .section ".tdata","awT",%progbits
3723 i[34567]86-*-* | x86_64-*-*)
3725 i[34567]86-*-solaris2.* | x86_64-*-solaris2.*)
3732 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3734 .section .tdata,"awt",@progbits'
3737 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
3738 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
3742 .section ".tdata","awT",@progbits'
3744 tls_as_opt="--fatal-warnings"
3748 if test x$on_solaris = xyes; then
3750 yes) tls_as_opt="$tls_as_opt --32" ;;
3753 conftest_s="$conftest_s
3757 leal foo@tlsgd(,%ebx,1), %eax
3758 leal foo@tlsldm(%ebx), %eax
3759 leal foo@dtpoff(%eax), %edx
3760 movl foo@gottpoff(%ebx), %eax
3761 subl foo@gottpoff(%ebx), %eax
3762 addl foo@gotntpoff(%ebx), %eax
3763 movl foo@indntpoff, %eax
3764 movl \$foo@tpoff, %eax
3765 subl \$foo@tpoff, %eax
3766 leal foo@ntpoff(%ecx), %eax"
3769 if test x$on_solaris = xyes; then
3771 yes) tls_as_opt="$tls_as_opt --64" ;;
3772 no) tls_as_opt="$tls_as_opt -xarch=amd64" ;;
3775 conftest_s="$conftest_s
3779 leaq foo@tlsgd(%rip), %rdi
3780 leaq foo@tlsld(%rip), %rdi
3781 leaq foo@dtpoff(%rax), %rdx
3782 movq foo@gottpoff(%rip), %rax
3783 movq \$foo@tpoff, %rax"
3789 .section ".tdata","awT",@progbits
3792 addl r16 = @ltoff(@dtpmod(foo#)), gp
3793 addl r17 = @ltoff(@dtprel(foo#)), gp
3794 addl r18 = @ltoff(@tprel(foo#)), gp
3795 addl r19 = @dtprel(foo#), gp
3796 adds r21 = @dtprel(foo#), r13
3797 movl r23 = @dtprel(foo#)
3798 addl r20 = @tprel(foo#), gp
3799 adds r22 = @tprel(foo#), r13
3800 movl r24 = @tprel(foo#)'
3801 tls_as_opt=--fatal-warnings
3805 .section .tdata,"awT",@progbits
3809 addik r5,r20,x@TLSGD
3810 addik r5,r20,x@TLSLDM'
3811 tls_as_opt='--fatal-warnings'
3815 .section .tdata,"awT",@progbits
3819 addiu $4, $28, %tlsgd(x)
3820 addiu $4, $28, %tlsldm(x)
3821 lui $4, %dtprel_hi(x)
3822 addiu $4, $4, %dtprel_lo(x)
3823 lw $4, %gottprel(x)($28)
3824 lui $4, %tprel_hi(x)
3825 addiu $4, $4, %tprel_lo(x)'
3826 tls_as_opt='-32 --fatal-warnings'
3830 .section .tdata,"awT",@progbits
3835 move.l x@TLSGD(%a5),%a0
3836 move.l x@TLSLDM(%a5),%a0
3837 move.l x@TLSLDO(%a5),%a0
3838 move.l x@TLSIE(%a5),%a0
3839 move.l x@TLSLE(%a5),%a0'
3840 tls_as_opt='--fatal-warnings'
3844 .section ".tdata","awT",@progbits'
3845 tls_as_opt="--fatal-warnings"
3849 .section ".tdata","awT",%progbits
3853 add x0, x0, #:tlsgd_lo12:x
3856 tls_as_opt='--fatal-warnings'
3860 .section ".tdata","awT",@progbits
3863 l.movhi r3, tpoffha(foo)
3865 l.lwz r4, tpofflo(foo)(r3)'
3866 tls_as_opt=--fatal-warnings
3870 .extern __get_tpointer
3886 .section ".tdata","awT",@progbits
3894 addi 3,2,ld0@got@tlsgd
3900 addi 3,2,x1@got@tlsld
3906 addis 9,3,x2@dtprel@ha
3907 addi 9,9,x2@dtprel@l
3910 ld 9,x3@got@dtprel(2)
3914 tls_as_opt="-a64 --fatal-warnings"
3918 .section ".tdata","awT",@progbits
3926 addi 3,31,ld0@got@tlsgd
3928 addi 3,31,x1@got@tlsld
3931 addis 9,3,x2@dtprel@ha
3932 addi 9,9,x2@dtprel@l
3933 lwz 9,x3@got@tprel(31)
3936 addis 9,2,x2@tprel@ha
3937 addi 9,9,x2@tprel@l'
3938 tls_as_opt="-a32 --fatal-warnings"
3942 .section .tdata,"awT",@progbits
3946 call __tls_get_addr'
3947 tls_as_opt='--fatal-warnings'
3951 .section ".tdata","awT",@progbits
3960 l %r1,foo@GOTNTPOFF(%r12)
3961 l %r1,0(%r1):tls_load:foo
3962 bas %r14,0(%r1,%r13):tls_gdcall:foo
3963 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3964 tls_as_opt="-m31 --fatal-warnings"
3968 .section ".tdata","awT",@progbits
3976 lg %r1,foo@GOTNTPOFF(%r12)
3977 larl %r1,foo@INDNTPOFF
3978 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3979 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3980 tls_as_opt="-m64 -Aesame --fatal-warnings"
3982 sh-*-* | sh[123456789lbe]*-*-*)
3984 .section ".tdata","awT",@progbits
3992 tls_as_opt=--fatal-warnings
3996 sparc*-sun-solaris2.*)
4003 if test x$on_solaris = xyes && test x$gas_flag = xno; then
4005 .section ".tdata",#alloc,#write,#tls'
4008 .section ".tdata","awT",@progbits'
4009 tls_as_opt="-32 --fatal-warnings"
4011 conftest_s="$conftest_s
4014 sethi %tgd_hi22(foo), %o0
4015 add %o0, %tgd_lo10(foo), %o1
4016 add %l7, %o1, %o0, %tgd_add(foo)
4017 call __tls_get_addr, %tgd_call(foo)
4018 sethi %tldm_hi22(foo), %l1
4019 add %l1, %tldm_lo10(foo), %l2
4020 add %l7, %l2, %o0, %tldm_add(foo)
4021 call __tls_get_addr, %tldm_call(foo)
4022 sethi %tldo_hix22(foo), %l3
4023 xor %l3, %tldo_lox10(foo), %l4
4024 add %o0, %l4, %l5, %tldo_add(foo)
4025 sethi %tie_hi22(foo), %o3
4026 add %o3, %tie_lo10(foo), %o3
4027 ld [%l7 + %o3], %o2, %tie_ld(foo)
4028 add %g7, %o2, %o4, %tie_add(foo)
4029 sethi %tle_hix22(foo), %l1
4030 xor %l1, %tle_lox10(foo), %o5
4031 ld [%g7 + %o5], %o1"
4035 .section ".tdata","awT",@progbits
4038 addli r0, zero, tls_gd(foo)
4039 auli r0, zero, tls_gd_ha16(foo)
4040 addli r0, r0, tls_gd_lo16(foo)
4042 addli r0, zero, tls_ie(foo)
4043 auli r0, r0, tls_ie_ha16(foo)
4044 addli r0, r0, tls_ie_lo16(foo)'
4045 tls_as_opt="--fatal-warnings"
4049 .section ".tdata","awT",@progbits
4052 shl16insli r0, zero, hw0_last_tls_gd(foo)
4053 shl16insli r0, zero, hw1_last_tls_gd(foo)
4054 shl16insli r0, r0, hw0_tls_gd(foo)
4056 shl16insli r0, zero, hw1_last_tls_ie(foo)
4057 shl16insli r0, r0, hw0_tls_ie(foo)'
4058 tls_as_opt="--fatal-warnings"
4062 .section ".tdata","awT",@progbits
4065 movi a8, foo@TLSFUNC
4066 movi a10, foo@TLSARG
4067 callx8.tls a8, foo@TLSCALL'
4072 if test "x$enable_tls" = xno ; then
4073 : # TLS explicitly disabled.
4074 elif test "x$enable_tls" = xyes ; then
4075 set_have_as_tls=yes # TLS explicitly enabled.
4076 elif test -z "$conftest_s"; then
4077 : # If we don't have a check, assume no support.
4079 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
4080 [$tls_as_opt], [$conftest_s],,
4081 [set_have_as_tls=yes])
4083 if test $set_have_as_tls = yes ; then
4084 AC_DEFINE(HAVE_AS_TLS, 1,
4085 [Define if your assembler and linker support thread-local storage.])
4088 # Target-specific assembler checks.
4090 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
4091 gcc_cv_ld_static_dynamic=no
4092 gcc_cv_ld_static_option='-Bstatic'
4093 gcc_cv_ld_dynamic_option='-Bdynamic'
4094 if test $in_tree_ld = yes ; then
4095 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
4096 gcc_cv_ld_static_dynamic=yes
4098 elif test x$gcc_cv_ld != x; then
4099 # Check if linker supports -Bstatic/-Bdynamic option
4100 if $gcc_cv_ld --help 2>&1 | grep -- -Bstatic > /dev/null \
4101 && $gcc_cv_ld --help 2>&1 | grep -- -Bdynamic > /dev/null; then
4102 gcc_cv_ld_static_dynamic=yes
4105 # AIX ld uses -b flags
4106 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
4107 gcc_cv_ld_static_dynamic=yes
4108 gcc_cv_ld_static_option="-bstatic"
4109 gcc_cv_ld_dynamic_option="-bdynamic"
4111 # HP-UX ld uses -a flags to select between shared and archive.
4113 if test x"$gnu_ld" = xno; then
4114 gcc_cv_ld_static_dynamic=yes
4115 gcc_cv_ld_static_option="-aarchive_shared"
4116 gcc_cv_ld_dynamic_option="-adefault"
4119 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
4121 gcc_cv_ld_static_dynamic=yes
4126 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
4127 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
4128 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
4129 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
4130 [Define to the linker option to disable use of shared objects.])
4131 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
4132 [Define to the linker option to enable use of shared objects.])
4134 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
4136 AC_MSG_CHECKING(linker --version-script option)
4137 gcc_cv_ld_version_script=no
4138 ld_version_script_option=''
4139 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
4140 gcc_cv_ld_version_script=yes
4141 ld_version_script_option='--version-script'
4142 elif test x$gcc_cv_ld != x; then
4144 # Solaris 2 ld always supports -M. It also supports a subset of
4145 # --version-script since Solaris 11.4, but requires
4146 # -z gnu-version-script-compat to activate.
4148 gcc_cv_ld_version_script=yes
4149 ld_version_script_option='-M'
4153 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
4154 AC_MSG_RESULT($gcc_cv_ld_version_script)
4155 AC_SUBST(ld_version_script_option)
4157 AC_MSG_CHECKING(linker soname option)
4159 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
4160 gcc_cv_ld_soname=yes
4161 ld_soname_option='-soname'
4162 elif test x$gcc_cv_ld != x; then
4165 gcc_cv_ld_soname=yes
4166 ld_soname_option='-install_name'
4168 # Solaris 2 ld always supports -h. It also supports --soname for GNU
4169 # ld compatiblity since some Solaris 10 update.
4171 gcc_cv_ld_soname=yes
4172 ld_soname_option='-h'
4176 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
4177 AC_MSG_RESULT($gcc_cv_ld_soname)
4178 AC_SUBST(ld_soname_option)
4180 if test x"$demangler_in_ld" = xyes; then
4181 AC_MSG_CHECKING(linker --demangle support)
4182 gcc_cv_ld_demangle=no
4183 if test $in_tree_ld = yes; then
4184 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
4185 gcc_cv_ld_demangle=yes
4187 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
4188 # Check if the GNU linker supports --demangle option
4189 if $gcc_cv_ld --help 2>&1 | grep no-demangle > /dev/null; then
4190 gcc_cv_ld_demangle=yes
4193 if test x"$gcc_cv_ld_demangle" = xyes; then
4194 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
4195 [Define if your linker supports --demangle option.])
4197 AC_MSG_RESULT($gcc_cv_ld_demangle)
4200 AC_MSG_CHECKING(linker plugin support)
4202 if test -f liblto_plugin.la; then
4203 save_ld_ver="$ld_ver"
4204 save_ld_vers_major="$ld_vers_major"
4205 save_ld_vers_minor="$ld_vers_minor"
4206 save_ld_is_gold="$ld_is_gold"
4210 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
4212 # FIXME: ld_is_gold?
4213 ld_vers_major="$gcc_cv_gld_major_version"
4214 ld_vers_minor="$gcc_cv_gld_minor_version"
4216 # Determine plugin linker version.
4217 # FIXME: Partial duplicate from above, generalize.
4219 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
4220 if echo "$ld_ver" | grep GNU > /dev/null; then
4221 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
4223 ld_vers=`echo $ld_ver | sed -n \
4224 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
4226 ld_vers=`echo $ld_ver | sed -n \
4227 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
4229 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
4230 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
4235 # Determine plugin support.
4236 if echo "$ld_ver" | grep GNU > /dev/null; then
4237 # Require GNU ld or gold 2.21+ for plugin support by default.
4238 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
4240 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
4241 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
4246 ld_ver="$save_ld_ver"
4247 ld_vers_major="$save_ld_vers_major"
4248 ld_vers_minor="$save_ld_vers_minor"
4249 ld_is_gold="$save_ld_is_gold"
4251 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
4252 [Define to the level of your linker's plugin support.])
4253 AC_MSG_RESULT($gcc_cv_lto_plugin)
4255 # Target OS-specific assembler checks.
4257 case "$target_os" in
4259 gcc_GAS_CHECK_FEATURE([-mmacosx-version-min option],
4260 gcc_cv_as_mmacosx_version_min,
4261 [-mmacosx-version-min=10.1], [.text],,
4262 [AC_DEFINE(HAVE_AS_MMACOSX_VERSION_MIN_OPTION, 1,
4263 [Define if your Mac OS X assembler supports the -mmacos-version-min option.])])
4267 # Target CPU-specific assembler checks.
4271 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,
4272 [-mabi=lp64], [.text],,,)
4273 if test x$gcc_cv_as_aarch64_mabi = xyes; then
4274 AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
4275 [Define if your assembler supports the -mabi option.])
4277 if test x$with_abi = xilp32; then
4278 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
4279 Upgrade the Assembler.])
4281 if test x"$with_multilib_list" = xdefault; then
4282 TM_MULTILIB_CONFIG=lp64
4284 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
4285 for aarch64_multilib in ${aarch64_multilibs}; do
4286 case ${aarch64_multilib} in
4288 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
4289 Upgrade the Assembler.])
4297 # Check if we have binutils support for relocations types needed by -fpic
4298 gcc_GAS_CHECK_FEATURE([-fpic relocs], gcc_cv_as_aarch64_picreloc,,
4301 ldr x0, [[x2, #:gotpage_lo15:globalsym]]
4302 ],,[AC_DEFINE(HAVE_AS_SMALL_PIC_RELOCS, 1,
4303 [Define if your assembler supports relocs needed by -fpic.])])
4304 # Enable Branch Target Identification Mechanism and Return Address
4305 # Signing by default.
4306 AC_ARG_ENABLE(standard-branch-protection,
4308 AS_HELP_STRING([--enable-standard-branch-protection],
4309 [enable Branch Target Identification Mechanism and Return Address Signing by default for AArch64])
4310 AS_HELP_STRING([--disable-standard-branch-protection],
4311 [disable Branch Target Identification Mechanism and Return Address Signing by default for AArch64])
4316 tm_defines="${tm_defines} TARGET_ENABLE_BTI=1 TARGET_ENABLE_PAC_RET=1"
4321 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-standard-branch-protection.\
4322 Valid choices are 'yes' and 'no'.])
4327 # Enable default workaround for AArch64 Cortex-A53 erratum 835769.
4328 AC_ARG_ENABLE(fix-cortex-a53-835769,
4330 AS_HELP_STRING([--enable-fix-cortex-a53-835769],
4331 [enable workaround for AArch64 Cortex-A53 erratum 835769 by default])
4332 AS_HELP_STRING([--disable-fix-cortex-a53-835769],
4333 [disable workaround for AArch64 Cortex-A53 erratum 835769 by default])
4338 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1"
4343 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\
4344 Valid choices are 'yes' and 'no'.])
4350 # Enable default workaround for AArch64 Cortex-A53 erratum 843419.
4351 AC_ARG_ENABLE(fix-cortex-a53-843419,
4353 AS_HELP_STRING([--enable-fix-cortex-a53-843419],
4354 [enable workaround for AArch64 Cortex-A53 erratum 843419 by default])
4355 AS_HELP_STRING([--disable-fix-cortex-a53-843419],
4356 [disable workaround for AArch64 Cortex-A53 erratum 843419 by default])
4361 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1"
4366 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\
4367 Valid choices are 'yes' and 'no'.])
4375 # All TARGET_ABI_OSF targets.
4376 alpha*-*-linux* | alpha*-*-*bsd*)
4377 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4378 gcc_cv_as_alpha_explicit_relocs,,
4381 extbl $3, $2, $3 !lituse_bytoff!1
4382 ldq $2, a($29) !literal!1
4383 ldq $4, b($29) !literal!2
4384 ldq_u $3, 0($2) !lituse_base!1
4385 ldq $27, f($29) !literal!5
4386 jsr $26, ($27), f !lituse_jsr!5
4387 ldah $29, 0($26) !gpdisp!3
4388 lda $0, c($29) !gprel
4389 ldah $1, d($29) !gprelhigh
4390 lda $1, d($1) !gprellow
4391 lda $29, 0($29) !gpdisp!3],,
4392 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
4393 [Define if your assembler supports explicit relocations.])])
4394 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
4395 gcc_cv_as_alpha_jsrdirect_relocs,,
4398 ldq $27, a($29) !literal!1
4399 jsr $26, ($27), a !lituse_jsrdirect!1],,
4400 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
4401 [Define if your assembler supports the lituse_jsrdirect relocation.])])
4405 gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax,
4406 [--mlink-relax], [.text],,
4407 [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1,
4408 [Define if your avr assembler supports --mlink-relax option.])])
4410 gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,
4412 [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1,
4413 [Define if your avr assembler supports -mrmw option.])])
4415 gcc_GAS_CHECK_FEATURE([__gcc_isr pseudo instruction],
4416 gcc_cv_as_avr_mgccisr,
4422 [AC_DEFINE(HAVE_AS_AVR_MGCCISR_OPTION, 1,
4423 [Define if your avr assembler supports -mgcc-isr option.])])
4425 # Check how default linker description file implements .rodata for
4426 # avrxmega3 (PR21472). avr-gcc assumes .rodata is *not* loaded to
4427 # RAM so avr-gcc skips __do_copy_data for .rodata objects.
4428 AC_MSG_CHECKING(binutils for avrxmega3 .rodata support)
4429 cat > conftest.s <<EOF
4430 .section .rodata,"a",@progbits
4432 ;; avr-nm should print "... R xxvaryy", not "... D xxvaryy".
4437 AC_TRY_COMMAND([$gcc_cv_as -mmcu=avrxmega3 conftest.s -o conftest.o])
4438 AC_TRY_COMMAND([$gcc_cv_ld -mavrxmega3 conftest.o -o conftest.elf])
4439 AC_TRY_COMMAND([$gcc_cv_nm conftest.elf > conftest.nm])
4440 if test -s conftest.nm
4442 if grep ' R xxvaryy' conftest.nm > /dev/null; then
4444 AC_DEFINE(HAVE_LD_AVR_AVRXMEGA3_RODATA_IN_FLASH, 1,
4445 [Define if your default avr linker script for avrxmega3 leaves .rodata in flash.])
4447 AC_MSG_RESULT(no: avrxmega3 .rodata located in RAM)
4448 echo "$as_me: nm output was" >&AS_MESSAGE_LOG_FD
4449 cat conftest.nm >&AS_MESSAGE_LOG_FD
4450 avr_ld_ver="`$gcc_cv_ld -v | sed -e 's:^.* ::'`"
4451 AC_MSG_WARN([[support for avrxmega3 .rodata in flash needs Binutils 2.29 or higher (have $avr_ld_ver)]])
4454 AC_MSG_RESULT(test failed)
4455 echo "$as_me: failed program was" >&AS_MESSAGE_LOG_FD
4456 cat conftest.s >&AS_MESSAGE_LOG_FD
4457 AC_MSG_WARN([[see `config.log' for details]])
4459 rm -f conftest.s conftest.o conftest.elf conftest.nm
4463 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
4464 gcc_cv_as_cris_no_mul_bug,
4465 [-no-mul-bug-abort], [.text],,
4466 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
4467 [Define if your assembler supports the -no-mul-bug-abort option.])])
4471 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,
4473 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
4474 [Define if your assembler supports -relax option.])])
4476 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
4477 gcc_cv_as_sparc_gotdata_op,
4484 sethi %gdop_hix22(foo), %g1
4485 xor %g1, %gdop_lox10(foo), %g1
4486 ld [[%l7 + %g1]], %g2, %gdop(foo)],
4487 [if test x$gcc_cv_ld != x \
4488 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4489 if test x$gcc_cv_objdump != x; then
4490 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
4491 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
4492 gcc_cv_as_sparc_gotdata_op=no
4494 gcc_cv_as_sparc_gotdata_op=yes
4499 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
4500 [Define if your assembler and linker support GOTDATA_OP relocs.])])
4502 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
4503 gcc_cv_as_sparc_ua_pcrel,
4511 .uaword %r_disp32(foo)],
4512 [if test x$gcc_cv_ld != x \
4513 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4514 gcc_cv_as_sparc_ua_pcrel=yes
4517 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
4518 [Define if your assembler and linker support unaligned PC relative relocs.])
4520 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
4521 gcc_cv_as_sparc_ua_pcrel_hidden,
4526 .uaword %r_disp32(foo)
4527 .byte 0x32, 0x33, 0x34
4532 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4533 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
4534 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
4535 | grep ' 31000000 07323334' > /dev/null 2>&1; then
4536 if $gcc_cv_objdump -R conftest 2> /dev/null \
4537 | grep 'DISP32' > /dev/null 2>&1; then
4540 gcc_cv_as_sparc_ua_pcrel_hidden=yes
4544 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
4545 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
4546 ]) # unaligned pcrel relocs
4548 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
4549 gcc_cv_as_sparc_offsetable_lo10,
4552 or %g1, %lo(ab) + 12, %g1
4553 or %g1, %lo(ab + 12), %g1],
4554 [if test x$gcc_cv_objdump != x \
4555 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
4556 | grep ' 82106000 82106000' > /dev/null 2>&1; then
4557 gcc_cv_as_sparc_offsetable_lo10=yes
4559 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
4560 [Define if your assembler supports offsetable %lo().])])
4562 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
4563 gcc_cv_as_sparc_fmaf,
4566 .register %g2, #scratch
4567 .register %g3, #scratch
4569 fmaddd %f0, %f2, %f4, %f6
4570 addxccc %g1, %g2, %g3
4571 fsrl32 %f2, %f4, %f8
4572 fnaddd %f10, %f12, %f14],,
4573 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
4574 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
4576 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
4577 gcc_cv_as_sparc_sparc4,
4580 .register %g2, #scratch
4581 .register %g3, #scratch
4584 1: cwbneg %g2, %g3, 1f
4587 aes_kexpand0 %f4, %f6, %f8
4588 des_round %f38, %f40, %f42, %f44
4589 camellia_f %f54, %f56, %f58, %f60
4590 kasumi_fi_xor %f46, %f48, %f50, %f52],,
4591 [AC_DEFINE(HAVE_AS_SPARC4, 1,
4592 [Define if your assembler supports SPARC4 instructions.])])
4594 gcc_GAS_CHECK_FEATURE([SPARC5 and VIS 4.0 instructions],
4595 gcc_cv_as_sparc_sparc5,
4598 .register %g2, #scratch
4599 .register %g3, #scratch
4602 fpadd8 %f0, %f2, %f4],,
4603 [AC_DEFINE(HAVE_AS_SPARC5_VIS4, 1,
4604 [Define if your assembler supports SPARC5 and VIS 4.0 instructions.])])
4606 gcc_GAS_CHECK_FEATURE([SPARC6 instructions],
4607 gcc_cv_as_sparc_sparc6,
4610 .register %g2, #scratch
4611 .register %g3, #scratch
4614 fpsll64x %f0, %f2, %f4],,
4615 [AC_DEFINE(HAVE_AS_SPARC6, 1,
4616 [Define if your assembler supports SPARC6 instructions.])])
4618 gcc_GAS_CHECK_FEATURE([LEON instructions],
4619 gcc_cv_as_sparc_leon,
4622 .register %g2, #scratch
4623 .register %g3, #scratch
4627 casa [[%g2]] 0xb, %g3, %g1],,
4628 [AC_DEFINE(HAVE_AS_LEON, 1,
4629 [Define if your assembler supports LEON instructions.])])
4633 i[34567]86-*-* | x86_64-*-*)
4637 # Full C++ conformance when using a shared libstdc++-v3 requires some
4638 # support from the Cygwin DLL, which in more recent versions exports
4639 # wrappers to aid in interposing and redirecting operators new, delete,
4640 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
4641 # are configuring for a version of Cygwin that exports the wrappers.
4642 if test x$host = x$target && test x$host_cpu = xi686; then
4643 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
4645 # Can't check presence of libc functions during cross-compile, so
4646 # we just have to assume we're building for an up-to-date target.
4647 gcc_ac_cygwin_dll_wrappers=yes
4649 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
4650 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
4651 [Define if you want to generate code by default that assumes that the
4652 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
4655 cygwin* | pe | mingw32*)
4656 # Recent binutils allows the three-operand form of ".comm" on PE. This
4657 # definition is used unconditionally to initialise the default state of
4658 # the target option variable that governs usage of the feature.
4659 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,,
4661 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
4662 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
4663 [Define if your assembler supports specifying the alignment
4664 of objects allocated using the GAS .comm command.])
4665 # Used for DWARF 2 in PE
4666 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
4667 gcc_cv_as_ix86_pe_secrel32,,
4672 [if test x$gcc_cv_ld != x \
4673 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
4674 gcc_cv_as_ix86_pe_secrel32=yes
4677 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
4678 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
4679 # Test if the assembler supports the extended form of the .section
4680 # directive that specifies section alignment. LTO support uses this,
4681 # but normally only after installation, so we warn but don't fail the
4682 # configure if LTO is enabled but the assembler does not support it.
4683 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
4684 -fatal-warnings,[.section lto_test,"dr0"])
4685 if test x$gcc_cv_as_section_has_align != xyes; then
4686 case ",$enable_languages," in
4688 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
4695 darwin2[[0-9]]* | darwin19*)
4696 gcc_GAS_CHECK_FEATURE([llvm assembler x86-pad-for-align option],
4697 gcc_cv_as_mllvm_x86_pad_for_align,
4698 [-mllvm -x86-pad-for-align=false], [.text],,
4699 [AC_DEFINE(HAVE_AS_MLLVM_X86_PAD_FOR_ALIGN, 1,
4700 [Define if your Mac OS X assembler supports -mllvm -x86-pad-for-align=false.])])
4704 gcc_GAS_CHECK_FEATURE([-xbrace_comment], gcc_cv_as_ix86_xbrace_comment,
4705 [-xbrace_comment=no], [.text],,
4706 [AC_DEFINE(HAVE_AS_XBRACE_COMMENT_OPTION, 1,
4707 [Define if your assembler supports -xbrace_comment option.])])
4709 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
4710 gcc_cv_as_ix86_filds,,
4711 [filds (%ebp); fists (%ebp)],,
4712 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
4713 [Define if your assembler uses filds and fists mnemonics.])])
4715 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
4716 gcc_cv_as_ix86_fildq,,
4717 [fildq (%ebp); fistpq (%ebp)],,
4718 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
4719 [Define if your assembler uses fildq and fistq mnemonics.])])
4721 gcc_GAS_CHECK_FEATURE([cmov syntax],
4722 gcc_cv_as_ix86_cmov_sun_syntax,,
4723 [cmovl.l %edx, %eax],,
4724 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
4725 [Define if your assembler supports the Sun syntax for cmov.])])
4727 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
4728 gcc_cv_as_ix86_ffreep,,
4730 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
4731 [Define if your assembler supports the ffreep mnemonic.])])
4733 gcc_GAS_CHECK_FEATURE([.quad directive],
4734 gcc_cv_as_ix86_quad,,
4736 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
4737 [Define if your assembler supports the .quad directive.])])
4739 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
4740 gcc_cv_as_ix86_sahf,,
4743 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
4744 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
4746 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
4747 gcc_cv_as_ix86_interunit_movq,,
4751 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
4752 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
4753 [Define if your assembler supports interunit movq mnemonic.])
4755 gcc_GAS_CHECK_FEATURE([hle prefixes],
4756 gcc_cv_as_ix86_hle,,
4757 [lock xacquire cmpxchg %esi, (%ecx)],,
4758 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
4759 [Define if your assembler supports HLE prefixes.])])
4761 gcc_GAS_CHECK_FEATURE([swap suffix],
4762 gcc_cv_as_ix86_swap,,
4763 [movl.s %esp, %ebp],,
4764 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
4765 [Define if your assembler supports the swap suffix.])])
4767 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
4768 gcc_cv_as_ix86_diff_sect_delta,,
4776 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
4777 [Define if your assembler supports the subtraction of symbols in different sections.])])
4779 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
4780 gcc_cv_as_ix86_rep_lock_prefix,,
4786 lock addl %edi, (%eax,%esi)
4787 lock orl $0, (%esp)],,
4788 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
4789 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
4791 gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
4792 gcc_cv_as_ix86_ud2,,
4794 [AC_DEFINE(HAVE_AS_IX86_UD2, 1,
4795 [Define if your assembler supports the 'ud2' mnemonic.])])
4797 # Enforce 32-bit output with gas and gld.
4798 if test x$gas = xyes; then
4799 as_ix86_gas_32_opt="--32"
4801 if echo "$ld_ver" | grep GNU > /dev/null; then
4802 if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then
4803 ld_ix86_gld_32_opt="-melf_i386_sol2"
4805 ld_ix86_gld_32_opt="-melf_i386"
4809 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
4810 gcc_cv_as_ix86_tlsgdplt,
4811 [$as_ix86_gas_32_opt],
4812 [call tls_gd@tlsgdplt],
4813 [if test x$gcc_cv_ld != x \
4814 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4815 gcc_cv_as_ix86_tlsgdplt=yes
4818 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
4819 [Define if your assembler and linker support @tlsgdplt.])])
4822 .section .tdata,"aw'$tls_section_flag'",@progbits
4824 .section .text,"ax",@progbits
4825 call tls_ld@tlsldmplt'
4827 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
4828 gcc_cv_as_ix86_tlsldmplt,
4829 [$as_ix86_gas_32_opt],
4831 [if test x$gcc_cv_ld != x \
4832 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4833 gcc_cv_as_ix86_tlsldmplt=yes
4836 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT,
4837 [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`],
4838 [Define to 1 if your assembler and linker support @tlsldmplt.])
4841 .section .text,"ax",@progbits
4843 .type _start, @function
4845 leal value@tlsldm(%ebx), %eax
4846 call ___tls_get_addr@plt
4848 .section .tdata,"aw'$tls_section_flag'",@progbits
4849 .type value, @object
4851 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc],
4852 gcc_cv_as_ix86_tlsldm,
4853 [$as_ix86_gas_32_opt],
4855 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4856 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then
4857 if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \
4858 || dis conftest 2>/dev/null | grep nop > /dev/null; then
4859 gcc_cv_as_ix86_tlsldm=yes
4863 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM,
4864 [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`],
4865 [Define to 1 if your assembler and linker support @tlsldm.])
4876 gcc_GAS_CHECK_FEATURE([R_386_GOT32X reloc],
4877 gcc_cv_as_ix86_got32x,
4878 [$as_ix86_gas_32_opt],
4880 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4881 && test x$gcc_cv_readelf != x \
4882 && $gcc_cv_readelf --relocs --wide conftest.o 2>&1 \
4883 | grep R_386_GOT32X > /dev/null 2>&1 \
4884 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4885 if $gcc_cv_objdump -dw conftest 2>&1 \
4886 | grep 0xffffff > /dev/null 2>&1; then
4887 gcc_cv_as_ix86_got32x=no
4889 gcc_cv_as_ix86_got32x=yes
4893 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_GOT32X,
4894 [`if test x"$gcc_cv_as_ix86_got32x" = xyes; then echo 1; else echo 0; fi`],
4895 [Define 0/1 if your assembler and linker support @GOT.])
4897 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
4898 gcc_cv_as_ix86_gotoff_in_data,
4899 [$as_ix86_gas_32_opt],
4905 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
4906 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
4907 [Define true if the assembler supports '.long foo@GOTOFF'.])
4910 .section .text,"ax",@progbits
4912 .type _start, @function
4914 leal ld@tlsldm(%ecx), %eax
4915 call *___tls_get_addr@GOT(%ecx)
4916 leal gd@tlsgd(%ecx), %eax
4917 call *___tls_get_addr@GOT(%ecx)
4919 .section .tdata,"aw'$tls_section_flag'",@progbits
4927 gcc_GAS_CHECK_FEATURE([calling ___tls_get_addr via GOT],
4928 gcc_cv_as_ix86_tls_get_addr_via_got,
4929 [$as_ix86_gas_32_opt],
4931 [if test x$gcc_cv_ld != x \
4932 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4933 gcc_cv_as_ix86_tls_get_addr_via_got=yes
4936 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLS_GET_ADDR_GOT,
4937 [`if test x"$gcc_cv_as_ix86_tls_get_addr_via_got" = xyes; then echo 1; else echo 0; fi`],
4938 [Define 0/1 if your assembler and linker support calling ___tls_get_addr via GOT.])
4942 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
4943 gcc_cv_as_ia64_ltoffx_ldxmov_relocs,,
4945 addl r15 = @ltoffx(x#), gp
4947 ld8.mov r16 = [[r15]], x#
4949 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
4950 [Define if your assembler supports ltoffx and ldxmov relocations.])])
4958 gcc_GAS_CHECK_FEATURE([.machine directive support],
4959 gcc_cv_as_machine_directive,,
4960 [ .machine ppc7400])
4961 if test x$gcc_cv_as_machine_directive != xyes; then
4962 echo "*** This target requires an assembler supporting \".machine\"" >&2
4963 echo you can get it from: https://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
4964 test x$build = x$target && exit 1
4970 *-*-aix*) conftest_s=' .machine "pwr5"
4973 *-*-darwin*) conftest_s=' .text
4975 *) conftest_s=' .machine power4
4980 gcc_GAS_CHECK_FEATURE([mfcr field support],
4981 gcc_cv_as_powerpc_mfcrf,,
4983 [AC_DEFINE(HAVE_AS_MFCRF, 1,
4984 [Define if your assembler supports mfcr field.])])
4987 *-*-aix*) conftest_s=' .csect .text[[PR]]
4989 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
4993 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
4994 *) conftest_s=' .text
4996 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
4999 gcc_GAS_CHECK_FEATURE([rel16 relocs],
5000 gcc_cv_as_powerpc_rel16, -a32,
5002 [AC_DEFINE(HAVE_AS_REL16, 1,
5003 [Define if your assembler supports R_PPC_REL16 relocs.])])
5006 *-*-aix*) conftest_s=' .machine "pwr7"
5009 *) conftest_s=' .machine power7
5014 gcc_GAS_CHECK_FEATURE([vector-scalar support],
5015 gcc_cv_as_powerpc_vsx, -a32,
5017 [AC_DEFINE(HAVE_AS_VSX, 1,
5018 [Define if your assembler supports VSX instructions.])])
5020 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5021 gcc_cv_as_powerpc_gnu_attribute,,
5022 [.gnu_attribute 4,1],,
5023 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5024 [Define if your assembler supports .gnu_attribute.])])
5026 gcc_GAS_CHECK_FEATURE([prologue entry point marker support],
5027 gcc_cv_as_powerpc_entry_markers,-a64 --fatal-warnings,
5028 [ .reloc .,R_PPC64_ENTRY; nop],,
5029 [AC_DEFINE(HAVE_AS_ENTRY_MARKERS, 1,
5030 [Define if your assembler supports the R_PPC64_ENTRY relocation.])])
5032 gcc_GAS_CHECK_FEATURE([plt sequence marker support],
5033 gcc_cv_as_powerpc_pltseq_markers,-a32 --fatal-warnings,
5034 [ .reloc .,R_PPC_PLTSEQ; nop],,
5035 [AC_DEFINE(HAVE_AS_PLTSEQ, 1,
5036 [Define if your assembler supports R_PPC*_PLTSEQ relocations.])])
5040 gcc_GAS_CHECK_FEATURE([AIX .ref support],
5042 [ .csect stuff[[rw]]
5048 [AC_DEFINE(HAVE_AS_REF, 1,
5049 [Define if your assembler supports .ref])])
5051 gcc_GAS_CHECK_FEATURE([AIX DWARF location lists section support],
5052 gcc_cv_as_aix_dwloc,,
5057 [AC_DEFINE(HAVE_XCOFF_DWARF_EXTRAS, 1,
5058 [Define if your assembler supports AIX debug frame section label reference.])])
5064 gcc_GAS_CHECK_FEATURE([explicit relocation support],
5065 gcc_cv_as_mips_explicit_relocs,,
5066 [ lw $4,%gp_rel(foo)($4)],,
5067 [if test x$target_cpu_default = x
5068 then target_cpu_default=MASK_EXPLICIT_RELOCS
5069 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
5072 gcc_GAS_CHECK_FEATURE([-mno-shared support],
5073 gcc_cv_as_mips_no_shared,[-mno-shared], [nop],,
5074 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
5075 [Define if the assembler understands -mno-shared.])])
5077 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5078 gcc_cv_as_mips_gnu_attribute,,
5079 [.gnu_attribute 4,1],,
5080 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5081 [Define if your assembler supports .gnu_attribute.])])
5083 gcc_GAS_CHECK_FEATURE([.module support],
5084 gcc_cv_as_mips_dot_module,[-32],
5087 [AC_DEFINE(HAVE_AS_DOT_MODULE, 1,
5088 [Define if your assembler supports .module.])])
5089 if test x$gcc_cv_as_mips_dot_module = xno \
5090 && test x$with_fp_32 != x; then
5092 [Requesting --with-fp-32= requires assembler support for .module.])
5095 gcc_GAS_CHECK_FEATURE([.micromips support],
5096 gcc_cv_as_micromips_support,[--fatal-warnings],
5098 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
5099 [Define if your assembler supports the .set micromips directive])])
5101 gcc_GAS_CHECK_FEATURE([.dtprelword support],
5102 gcc_cv_as_mips_dtprelword,,
5103 [.section .tdata,"awT",@progbits
5107 .dtprelword x+0x8000],,
5108 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
5109 [Define if your assembler supports .dtprelword.])])
5111 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
5112 gcc_cv_as_mips_dspr1_mult,,
5122 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
5123 [Define if your assembler supports DSPR1 mult.])])
5125 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
5126 gcc_cv_as_ld_jalr_reloc=no
5127 if test $gcc_cv_as_mips_explicit_relocs = yes; then
5128 if test $in_tree_ld = yes ; then
5129 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
5130 && test $in_tree_ld_is_elf = yes; then
5131 gcc_cv_as_ld_jalr_reloc=yes
5133 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
5134 echo ' .ent x' > conftest.s
5135 echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s
5136 echo ' lw $25,%call16(y)($28)' >> conftest.s
5137 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
5138 echo '1: jalr $25' >> conftest.s
5139 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
5140 echo '1: jalr $25' >> conftest.s
5141 echo ' .end x' >> conftest.s
5142 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
5143 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
5144 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
5145 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
5146 gcc_cv_as_ld_jalr_reloc=yes
5152 if test $gcc_cv_as_ld_jalr_reloc = yes; then
5153 if test x$target_cpu_default = x; then
5154 target_cpu_default=MASK_RELAX_PIC_CALLS
5156 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
5159 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
5161 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
5162 [gcc_cv_ld_mips_personality_relaxation],
5163 [gcc_cv_ld_mips_personality_relaxation=no
5164 if test $in_tree_ld = yes ; then
5165 if test "$gcc_cv_gld_major_version" -eq 2 \
5166 -a "$gcc_cv_gld_minor_version" -ge 21 \
5167 -o "$gcc_cv_gld_major_version" -gt 2; then
5168 gcc_cv_ld_mips_personality_relaxation=yes
5170 elif test x$gcc_cv_as != x \
5171 -a x$gcc_cv_ld != x \
5172 -a x$gcc_cv_readelf != x ; then
5173 cat > conftest.s <<EOF
5175 .cfi_personality 0x80,indirect_ptr
5182 .section .data,"aw",@progbits
5186 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
5187 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
5188 if $gcc_cv_readelf -d conftest 2>&1 \
5189 | grep TEXTREL > /dev/null 2>&1; then
5191 elif $gcc_cv_readelf --relocs conftest 2>&1 \
5192 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
5195 gcc_cv_ld_mips_personality_relaxation=yes
5199 rm -f conftest.s conftest.o conftest])
5200 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
5201 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
5202 [Define if your linker can relax absolute .eh_frame personality
5203 pointers into PC-relative form.])
5206 gcc_GAS_CHECK_FEATURE([-mnan= support],
5209 [AC_DEFINE(HAVE_AS_NAN, 1,
5210 [Define if the assembler understands -mnan=.])])
5211 if test x$gcc_cv_as_mips_nan = xno \
5212 && test x$with_nan != x; then
5214 [Requesting --with-nan= requires assembler support for -mnan=])
5218 # Earlier GAS versions generically support .gnu_attribute, but the
5219 # msp430 assembler will not do anything with it.
5220 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5221 gcc_cv_as_msp430_gnu_attribute,,
5222 [.gnu_attribute 4,1],,
5223 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5224 [Define if your assembler supports .gnu_attribute.])])
5225 gcc_GAS_CHECK_FEATURE([.mspabi_attribute support],
5226 gcc_cv_as_msp430_mspabi_attribute,,
5227 [.mspabi_attribute 4,2],,
5228 [AC_DEFINE(HAVE_AS_MSPABI_ATTRIBUTE, 1,
5229 [Define if your assembler supports .mspabi_attribute.])])
5230 if test x$enable_newlib_nano_formatted_io = xyes; then
5231 AC_DEFINE(HAVE_NEWLIB_NANO_FORMATTED_IO, 1, [Define if GCC has been
5232 configured with --enable-newlib-nano-formatted-io.])
5236 # Versions 2.33 and earlier lacked support for the %gotoff relocation
5237 # syntax that is documented in the ABI specification.
5238 gcc_GAS_CHECK_FEATURE([support for %gotoff relocations in constant data],
5239 gcc_cv_as_nios2_gotoff_relocation,,
5242 .long %gotoff(foo)],,
5243 [AC_DEFINE(HAVE_AS_NIOS2_GOTOFF_RELOCATION, 1,
5244 [Define if your assembler supports %gotoff relocation syntax.])])
5247 gcc_GAS_CHECK_FEATURE([.attribute support],
5248 gcc_cv_as_riscv_attribute,,
5249 [.attribute stack_align,4],,
5250 [AC_DEFINE(HAVE_AS_RISCV_ATTRIBUTE, 1,
5251 [Define if your assembler supports .attribute.])])
5252 gcc_GAS_CHECK_FEATURE([-misa-spec= support],
5253 gcc_cv_as_riscv_isa_spec,
5255 [AC_DEFINE(HAVE_AS_MISA_SPEC, 1,
5256 [Define if the assembler understands -misa-spec=.])])
5257 gcc_GAS_CHECK_FEATURE([-march=rv32i_zifencei support],
5258 gcc_cv_as_riscv_march_zifencei,
5259 [-march=rv32i_zifencei],,,
5260 [AC_DEFINE(HAVE_AS_MARCH_ZIFENCEI, 1,
5261 [Define if the assembler understands -march=rv*_zifencei.])])
5264 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5265 gcc_cv_as_s390_gnu_attribute,,
5266 [.gnu_attribute 8,1],,
5267 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5268 [Define if your assembler supports .gnu_attribute.])])
5269 gcc_GAS_CHECK_FEATURE([.machine and .machinemode support],
5270 gcc_cv_as_s390_machine_machinemode,,
5275 [AC_DEFINE(HAVE_AS_MACHINE_MACHINEMODE, 1,
5276 [Define if your assembler supports .machine and .machinemode.])])
5277 gcc_GAS_CHECK_FEATURE([architecture modifiers support],
5278 gcc_cv_as_s390_architecture_modifiers,,
5279 [ .machine z13+vx ],,
5280 [AC_DEFINE(HAVE_AS_ARCHITECTURE_MODIFIERS, 1,
5281 [Define if your assembler supports architecture modifiers.])])
5282 gcc_GAS_CHECK_FEATURE([vector load/store alignment hints],
5283 gcc_cv_as_s390_vector_loadstore_alignment_hints,,
5284 [ vl %v24,0(%r15),3 ],,
5285 [AC_DEFINE(HAVE_AS_VECTOR_LOADSTORE_ALIGNMENT_HINTS, 1,
5286 [Define if your assembler supports vl/vst/vlm/vstm with an optional alignment hint argument.])])
5287 gcc_GAS_CHECK_FEATURE([vector load/store alignment hints on z13],
5288 gcc_cv_as_s390_vector_loadstore_alignment_hints_on_z13, [-mzarch -march=z13],
5289 [ vl %v24,0(%r15),3 ],,
5290 [AC_DEFINE(HAVE_AS_VECTOR_LOADSTORE_ALIGNMENT_HINTS_ON_Z13, 1,
5291 [Define if your assembler supports vl/vst/vlm/vstm with an optional alignment hint argument on z13.])])
5296 # Mips and HP-UX need the GNU assembler.
5297 # Linux on IA64 might be able to use the Intel assembler.
5300 mips*-*-* | *-*-hpux* )
5301 if test x$gas_flag = xyes \
5302 || test x"$host" != x"$build" \
5303 || test ! -x "$gcc_cv_as" \
5304 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
5307 echo "*** This configuration requires the GNU assembler" >&2
5313 # This tests if the assembler supports two registers for global_load functions
5314 # (like in LLVM versions <12) or one register (like in LLVM 12).
5317 AC_MSG_CHECKING(assembler fix for global_load functions)
5318 gcc_cv_as_gcn_global_load_fixed=yes
5319 if test x$gcc_cv_as != x; then
5320 cat > conftest.s <<EOF
5321 global_store_dwordx2 v[[1:2]], v[[4:5]], s[[14:15]]
5323 if $gcc_cv_as -triple=amdgcn--amdhsa -filetype=obj -mcpu=gfx900 -o conftest.o conftest.s > /dev/null 2>&1; then
5324 gcc_cv_as_gcn_global_load_fixed=no
5326 rm -f conftest.s conftest.o conftest
5328 global_load_fixed=`if test x$gcc_cv_as_gcn_global_load_fixed = xyes; then echo 1; else echo 0; fi`
5329 AC_DEFINE_UNQUOTED(HAVE_GCN_ASM_GLOBAL_LOAD_FIXED, $global_load_fixed,
5330 [Define if your assembler has fixed global_load functions.])
5331 AC_MSG_RESULT($gcc_cv_as_gcn_global_load_fixed)
5337 # Test the LLVM assembler syntax dialect; they have made a number of
5338 # changes between LLVM 12 & 13 without any backward compatibility.
5339 gcc_GAS_CHECK_FEATURE([assembler amdgcn_target v2/3 syntax],
5340 gcc_cv_as_gcn_asm_v3_syntax,
5341 [-triple=amdgcn--amdhsa -mcpu=gfx906 -mattr=+xnack],
5342 [.amdgcn_target "amdgcn-unknown-amdhsa--gfx906+xnack"],,
5343 [AC_DEFINE(HAVE_GCN_ASM_V3_SYNTAX, 1,
5344 [Define if your assembler expects amdgcn_target gfx908+xnack syntax.])])
5345 gcc_GAS_CHECK_FEATURE([assembler amdgcn_target v4 syntax],
5346 gcc_cv_as_gcn_asm_v4_syntax,
5347 [-triple=amdgcn--amdhsa -mcpu=gfx908 -mattr=+xnack],
5348 [.amdgcn_target "amdgcn-unknown-amdhsa--gfx908:xnack+"],,
5349 [AC_DEFINE(HAVE_GCN_ASM_V4_SYNTAX, 1,
5350 [Define if your assembler expects amdgcn_target gfx908:xnack+ syntax.])])
5352 # Some attribute names changed in the move to v4 ...
5353 if test $gcc_cv_as_gcn_asm_v3_syntax = yes; then
5355 sramattr="+sram-ecc"
5357 elif test $gcc_cv_as_gcn_asm_v4_syntax = yes; then
5359 sramattr=":sramecc+"
5362 AC_MSG_ERROR([Unrecognised assembler version])
5365 # Test whether the LLVM assembler accepts -mattr=+xnack without any
5366 # diagnostic. LLVM 9 & 10 accept the option whether it makes sense or not,
5367 # LLVM 12+ throws a warning for GPUs without support.
5368 gcc_GAS_CHECK_FEATURE([assembler accepts -mattr=+xnack for fiji],
5369 gcc_cv_as_gcn_xnack_ecc_fiji,
5370 [-triple=amdgcn--amdhsa -mcpu=fiji -mattr=+xnack 2>conftest.err], [],
5371 [grep "." conftest.err >&AS_MESSAGE_LOG_FD \
5372 || gcc_cv_as_gcn_xnack_ecc_fiji=yes],
5373 [AC_DEFINE(HAVE_GCN_XNACK_FIJI, 1,
5374 [Define if your assembler allows -mattr=+xnack for fiji.])])
5376 gcc_GAS_CHECK_FEATURE([assembler accepts -mattr=+xnack for gfx900],
5377 gcc_cv_as_gcn_xnack_ecc_gfx900,
5378 [-triple=amdgcn--amdhsa -mcpu=gfx900 -mattr=+xnack 2>conftest.err], [],
5379 [grep "." conftest.err >&AS_MESSAGE_LOG_FD \
5380 || gcc_cv_as_gcn_xnack_ecc_gfx900=yes],
5381 [AC_DEFINE(HAVE_GCN_XNACK_GFX900, 1,
5382 [Define if your assembler allows -mattr=+xnack for gfx900.])])
5384 gcc_GAS_CHECK_FEATURE([assembler accepts -mattr=+xnack for gfx906],
5385 gcc_cv_as_gcn_xnack_ecc_gfx906,
5386 [-triple=amdgcn--amdhsa -mcpu=gfx906 -mattr=+xnack 2>conftest.err], [],
5387 [grep "." conftest.err >&AS_MESSAGE_LOG_FD \
5388 || gcc_cv_as_gcn_xnack_ecc_gfx906=yes],
5389 [AC_DEFINE(HAVE_GCN_XNACK_GFX906, 1,
5390 [Define if your assembler allows -mattr=+xnack for gfx906.])])
5392 gcc_GAS_CHECK_FEATURE([assembler accepts -mattr=+xnack for gfx908],
5393 gcc_cv_as_gcn_xnack_ecc_gfx908,
5394 [-triple=amdgcn--amdhsa -mcpu=gfx908 -mattr=+xnack 2>conftest.err], [],
5395 [grep "." conftest.err >&AS_MESSAGE_LOG_FD \
5396 || gcc_cv_as_gcn_xnack_ecc_gfx908=yes],
5397 [AC_DEFINE(HAVE_GCN_XNACK_GFX908, 1,
5398 [Define if your assembler allows -mattr=+xnack for gfx908.])])
5401 # Test whether the LLVM assembler accepts -mattr=+sramecc without any
5402 # diagnostic. LLVM 9 & 10 accept the option whether it makes sense or not,
5403 # (some?) LLVM 12 rejects it for all GPUs, and LLVM13 throws a warning
5404 # for GPUs without support.
5405 gcc_GAS_CHECK_FEATURE([assembler accepts -mattr=$sramopt for fiji],
5406 gcc_cv_as_gcn_sram_ecc_fiji,
5407 [-triple=amdgcn--amdhsa -mcpu=fiji -mattr=$sramopt 2>conftest.err], [],
5408 [grep "." conftest.err >&AS_MESSAGE_LOG_FD \
5409 || gcc_cv_as_gcn_sram_ecc_fiji=yes],
5410 [AC_DEFINE(HAVE_GCN_SRAM_ECC_FIJI, 1,
5411 [Define if your assembler allows -mattr=+sramecc for fiji.])])
5413 gcc_GAS_CHECK_FEATURE([assembler accepts -mattr=$sramopt for gfx900],
5414 gcc_cv_as_gcn_sram_ecc_gfx900,
5415 [-triple=amdgcn--amdhsa -mcpu=gfx900 -mattr=$sramopt 2>conftest.err], [],
5416 [grep "." conftest.err >&AS_MESSAGE_LOG_FD \
5417 || gcc_cv_as_gcn_sram_ecc_gfx900=yes],
5418 [AC_DEFINE(HAVE_GCN_SRAM_ECC_GFX900, 1,
5419 [Define if your assembler allows -mattr=+sramecc for gfx900.])])
5421 gcc_GAS_CHECK_FEATURE([assembler accepts -mattr=$sramopt for gfx906],
5422 gcc_cv_as_gcn_sram_ecc_gfx906,
5423 [-triple=amdgcn--amdhsa -mcpu=gfx906 -mattr=$sramopt 2>conftest.err], [],
5424 [grep "." conftest.err >&AS_MESSAGE_LOG_FD \
5425 || gcc_cv_as_gcn_sram_ecc_gfx906=yes],
5426 [AC_DEFINE(HAVE_GCN_SRAM_ECC_GFX906, 1,
5427 [Define if your assembler allows -mattr=+sramecc for gfx906.])])
5429 gcc_GAS_CHECK_FEATURE([assembler accepts -mattr=$sramopt for gfx908],
5430 gcc_cv_as_gcn_sram_ecc_gfx908,
5431 [-triple=amdgcn--amdhsa -mcpu=gfx908 -mattr=$sramopt 2>conftest.err], [],
5432 [grep "." conftest.err >&AS_MESSAGE_LOG_FD \
5433 || gcc_cv_as_gcn_sram_ecc_gfx908=yes],
5434 [AC_DEFINE(HAVE_GCN_SRAM_ECC_GFX908, 1,
5435 [Define if your assembler allows -mattr=+sramecc for gfx908.])])
5439 gcc_GAS_CHECK_FEATURE([assembler for arm accepts context-specific architecture extensions],
5440 gcc_cv_as_arm_option_extensions,
5441 [-march=armv8.1-m.main+mve],
5446 [AC_DEFINE(HAVE_GAS_ARM_EXTENDED_ARCH, 1,
5447 [Define if your Arm assembler permits context-specific feature extensions.])])
5450 # ??? Not all targets support dwarf2 debug_line, even within a version
5451 # of gas. Moreover, we need to emit a valid instruction to trigger any
5452 # info to the output file. So, as supported targets are added to gas 2.11,
5453 # add some instruction here to (also) show we expect this might work.
5454 # ??? Once 2.11 is released, probably need to add first known working
5455 # version to the per-target configury.
5457 aarch64 | alpha | arc | arm | avr | bfin | cris | csky | i386 | m32c | m68k \
5458 | microblaze | mips | nds32 | nios2 | pa | riscv | rs6000 | score | sparc \
5459 | tilegx | tilepro | visium | xstormy16 | xtensa)
5469 if test x"$insn" != x; then
5471 .file 1 \"conftest.s\"
5474 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
5475 gcc_cv_as_dwarf2_debug_line,,
5477 [if test x$gcc_cv_objdump != x \
5478 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
5479 | grep debug_line > /dev/null 2>&1; then
5480 gcc_cv_as_dwarf2_debug_line=yes
5481 elif test x$gcc_cv_otool != x \
5482 && $gcc_cv_otool -l conftest.o 2> /dev/null \
5483 | grep debug_line > /dev/null 2>&1; then
5484 gcc_cv_as_dwarf2_debug_line=yes
5487 # The .debug_line file table must be in the exact order that
5488 # we specified the files, since these indices are also used
5489 # by DW_AT_decl_file. Approximate this test by testing if
5490 # the assembler bitches if the same index is assigned twice.
5491 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
5492 gcc_cv_as_dwarf2_file_buggy,,
5496 if test $gcc_cv_as_dwarf2_debug_line = yes \
5497 && test $gcc_cv_as_dwarf2_file_buggy = no; then
5498 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
5499 [Define if your assembler supports dwarf2 .file/.loc directives,
5500 and preserves file table indices exactly as given.])
5502 if test $gcc_cv_as_leb128 = yes; then
5504 .file 1 \"conftest.s\"
5505 .loc 1 3 0 view .LVU1
5511 gcc_GAS_CHECK_FEATURE([dwarf2 debug_view support],
5512 gcc_cv_as_dwarf2_debug_view,,
5514 [AC_DEFINE(HAVE_AS_DWARF2_DEBUG_VIEW, 1,
5515 [Define if your assembler supports views in dwarf2 .loc directives.])])
5519 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
5520 gcc_cv_as_gdwarf2_flag,
5521 [--gdwarf2], [$insn],,
5522 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
5523 [Define if your assembler supports the --gdwarf2 option.])])
5525 gcc_GAS_CHECK_FEATURE([--gdwarf-5 option],
5526 gcc_cv_as_gdwarf_5_flag,
5527 [--gdwarf-5], [$insn],
5528 [if test x$gcc_cv_objdump != x \
5529 && $gcc_cv_objdump -Wi conftest.o 2>&1 \
5530 | grep DW_TAG_compile_unit > /dev/null 2>&1; then
5531 gcc_cv_as_gdwarf_5_flag=yes;
5532 fi],[AC_DEFINE(HAVE_AS_GDWARF_5_DEBUG_FLAG, 1,
5533 [Define if your assembler supports the --gdwarf-5 option.])])
5536 win32 | pe | cygwin* | mingw32*)
5537 section_flags=\"dr\"
5538 function_type=".def foo; .scl 2; .type 32; .endef"
5541 section_flags=\"\",%progbits
5542 function_type=".type foo, %function"
5543 function_size=".size foo, .-foo";;
5545 dwarf4_debug_info_size=0x46
5546 dwarf4_high_pc_form=7
5547 dwarf4_debug_aranges_size=0x2c
5549 for dwarf4_addr_size in 8 4; do
5565 .section .debug_info,$section_flags
5567 .4byte $dwarf4_debug_info_size
5569 .4byte .Ldebug_abbrev0
5570 .byte 0x$dwarf4_addr_size
5572 .ascii \"GNU C17\\0\"
5576 .${dwarf4_addr_size}byte .Ltext0
5577 .${dwarf4_addr_size}byte .Letext0-.Ltext0
5578 .4byte .Ldebug_line0
5584 .${dwarf4_addr_size}byte .LFB0
5585 .${dwarf4_addr_size}byte .LFE0-.LFB0
5589 .section .debug_abbrev,$section_flags
5605 .byte 0x$dwarf4_high_pc_form
5626 .byte 0x$dwarf4_high_pc_form
5632 .section .debug_aranges,$section_flags
5633 .4byte $dwarf4_debug_aranges_size
5635 .4byte .Ldebug_info0
5640 .${dwarf4_addr_size}byte .Ltext0
5641 .${dwarf4_addr_size}byte .Letext0-.Ltext0
5642 .${dwarf4_addr_size}byte 0
5643 .${dwarf4_addr_size}byte 0
5644 .section .debug_line,$section_flags
5646 .4byte .LELT0-.LSLT0
5649 .4byte .LELTP0-.LASLTP0
5677 .byte 0x$dwarf4_line_sz
5679 .${dwarf4_addr_size}byte .LM1
5684 .byte 0x$dwarf4_line_sz
5686 .${dwarf4_addr_size}byte .LM2
5691 .byte 0x$dwarf4_line_sz
5693 .${dwarf4_addr_size}byte .Letext0
5698 .section .debug_str,$section_flags
5702 if test $dwarf4_addr_size = 4; then
5703 gcc_GAS_CHECK_FEATURE([assembly of compiler generated 32-bit .debug_line],
5704 gcc_cv_as_debug_line_32_flag,,
5706 [dwarf4_success=yes])
5708 gcc_GAS_CHECK_FEATURE([assembly of compiler generated 64-bit .debug_line],
5709 gcc_cv_as_debug_line_64_flag,,
5711 [dwarf4_success=yes])
5713 if test $dwarf4_success = yes; then
5715 gcc_GAS_CHECK_FEATURE([--gdwarf-4 not refusing compiler generated .debug_line],
5716 gcc_cv_as_dwarf_4_debug_line_flag,
5717 [--gdwarf-4], [$conftest_s],,
5718 [dwarf4_success=yes])
5721 dwarf4_debug_info_size=0x36
5722 dwarf4_high_pc_form=6
5723 dwarf4_debug_aranges_size=0x1c
5727 if test $dwarf4_success = yes; then
5745 gcc_GAS_CHECK_FEATURE([--gdwarf-4 with the APP marker],
5746 gcc_cv_as_dwarf_4_app_flag,
5747 [--gdwarf-4], [$conftest_s],, [dwarf4_success=yes])
5750 if test $dwarf4_success = yes; then
5760 gcc_GAS_CHECK_FEATURE([working --gdwarf-4/--gdwarf-5 for all sources],
5761 gcc_cv_as_working_gdwarf_n_flag,
5765 if test x$gcc_cv_objdump != x \
5766 && $gcc_cv_objdump -W conftest.o 2>&1 \
5767 | grep conftest.s > /dev/null 2>&1; then
5768 gcc_cv_as_working_gdwarf_n_flag=no
5770 gcc_cv_as_working_gdwarf_n_flag=yes
5772 changequote([,])dnl])
5773 if test $gcc_cv_as_working_gdwarf_n_flag = yes; then
5774 AC_DEFINE(HAVE_AS_WORKING_DWARF_N_FLAG, 1,
5775 [Define if your assembler supports --gdwarf-4/--gdwarf-5 even with
5776 compiler generated .debug_line.])
5780 gcc_GAS_CHECK_FEATURE([--gstabs option],
5781 gcc_cv_as_gstabs_flag,
5782 [--gstabs], [$insn],,
5783 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
5784 [Define if your assembler supports the --gstabs option.])])
5786 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
5787 gcc_cv_as_debug_prefix_map_flag,
5788 [--debug-prefix-map /a=/b], [$insn],,
5789 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
5790 [Define if your assembler supports the --debug-prefix-map option.])])
5793 gcc_GAS_CHECK_FEATURE([compressed debug sections],
5794 gcc_cv_as_compress_debug,,,
5795 [# gas compiled without zlib cannot compress debug sections and warns
5796 # about it, but still exits successfully. So check for this, too.
5797 if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null
5799 gcc_cv_as_compress_debug=0
5800 # Since binutils 2.26, gas supports --compress-debug-sections=type,
5801 # defaulting to the ELF gABI format.
5802 elif $gcc_cv_as --compress-debug-sections=zlib-gnu -o conftest.o conftest.s > /dev/null 2>&1
5804 gcc_cv_as_compress_debug=2
5805 gcc_cv_as_compress_debug_option="--compress-debug-sections"
5806 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
5807 # Before binutils 2.26, gas only supported --compress-debug-options and
5808 # emitted the traditional GNU format.
5809 elif $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s > /dev/null 2>&1
5811 gcc_cv_as_compress_debug=1
5812 gcc_cv_as_compress_debug_option="--compress-debug-sections"
5813 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
5815 gcc_cv_as_compress_debug=0
5817 AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug,
5818 [Define to the level of your assembler's compressed debug section support.])
5819 AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option",
5820 [Define to the assembler option to enable compressed debug sections.])
5821 AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option",
5822 [Define to the assembler option to disable compressed debug sections.])
5824 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,,
5826 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
5827 [Define if your assembler supports .lcomm with an alignment field.])])
5829 if test x$with_sysroot = x && test x$host = x$target \
5830 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
5831 && test "$prefix" != "NONE"; then
5832 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
5833 [Define to PREFIX/include if cpp should also search that directory.])
5836 # Determine the version of glibc, if any, used on the target.
5837 AC_MSG_CHECKING([for target glibc version])
5838 AC_ARG_WITH([glibc-version],
5839 [AS_HELP_STRING([--with-glibc-version=M.N],
5840 [assume GCC used with glibc version M.N or later])], [
5841 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
5842 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
5843 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
5845 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
5847 glibc_version_major=0
5848 glibc_version_minor=0
5849 [if test -f $target_header_dir/features.h \
5850 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
5851 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
5852 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
5853 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
5855 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
5856 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MAJOR], [$glibc_version_major],
5857 [GNU C Library major version number used on the target, or 0.])
5858 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MINOR], [$glibc_version_minor],
5859 [GNU C Library minor version number used on the target, or 0.])
5861 AC_ARG_ENABLE(gnu-unique-object,
5862 [AS_HELP_STRING([--enable-gnu-unique-object],
5863 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
5864 [case $enable_gnu_unique_object in
5866 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
5867 Valid choices are 'yes' and 'no'.]) ;;
5869 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,,
5870 [.type foo, '$target_type_format_char'gnu_unique_object],,
5871 # We need to unquote above to to use the definition from config.gcc.
5872 # Also check for ld.so support, i.e. glibc 2.11 or higher.
5873 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
5875 if test x$enable_gnu_unique_object = xyes; then
5876 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
5877 [Define if your assembler supports @gnu_unique_object.])
5880 AC_CACHE_CHECK([assembler for tolerance to line number 0],
5881 [gcc_cv_as_line_zero],
5882 [gcc_cv_as_line_zero=no
5883 if test "x$gcc_cv_as" != x; then
5884 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
5885 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
5886 test "x`cat conftest.out`" = x
5888 gcc_cv_as_line_zero=yes
5890 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
5891 cat conftest.s >&AS_MESSAGE_LOG_FD
5892 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
5893 cat conftest.out >&AS_MESSAGE_LOG_FD
5895 rm -f conftest.o conftest.s conftest.out
5897 if test "x$gcc_cv_as_line_zero" = xyes; then
5898 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
5899 [Define if the assembler won't complain about a line such as # 0 "" 2.])
5902 AC_MSG_CHECKING(support for thin archives)
5903 thin_archive_support=no
5904 echo 'int main (void) { return 0; }' > conftest.c
5905 if ($AR --version | sed 1q | grep "GNU ar" \
5906 && $CC $CFLAGS -c conftest.c \
5907 && $AR rcT conftest.a conftest.o \
5908 && $CC $CFLAGS $LDFLAGS -o conftest conftest.a) >/dev/null 2>&1; then
5909 thin_archive_support=yes
5911 rm -f conftest.c conftest.o conftest.a conftest
5912 AC_MSG_RESULT($thin_archive_support)
5913 AC_SUBST(thin_archive_support)
5915 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
5916 gcc_cv_ld_eh_frame_hdr=no
5917 if test $in_tree_ld = yes ; then
5918 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
5919 && test $in_tree_ld_is_elf = yes; then
5920 gcc_cv_ld_eh_frame_hdr=yes
5922 elif test x$gcc_cv_ld != x; then
5923 if echo "$ld_ver" | grep GNU > /dev/null; then
5924 # Check if linker supports --eh-frame-hdr option
5925 if $gcc_cv_ld --help 2>&1 | grep eh-frame-hdr > /dev/null; then
5926 gcc_cv_ld_eh_frame_hdr=yes
5931 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
5932 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
5933 gcc_cv_ld_eh_frame_hdr=yes
5939 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
5940 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
5941 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
5942 [Define if your linker supports .eh_frame_hdr.])
5944 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
5946 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
5947 gcc_cv_ld_eh_frame_ciev3=no
5948 if test $in_tree_ld = yes ; then
5949 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5950 && test $in_tree_ld_is_elf = yes; then
5951 gcc_cv_ld_eh_frame_ciev3=yes
5953 elif test x$gcc_cv_ld != x; then
5954 if echo "$ld_ver" | grep GNU > /dev/null; then
5955 gcc_cv_ld_eh_frame_ciev3=yes
5956 if test 0"$ld_date" -lt 20040513; then
5957 if test -n "$ld_date"; then
5958 # If there was date string, but was earlier than 2004-05-13, fail
5959 gcc_cv_ld_eh_frame_ciev3=no
5960 elif test "$ld_vers_major" -lt 2; then
5961 gcc_cv_ld_eh_frame_ciev3=no
5962 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
5963 gcc_cv_ld_eh_frame_ciev3=no
5969 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
5970 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
5971 gcc_cv_ld_eh_frame_ciev3=yes
5977 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
5978 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
5979 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
5980 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
5982 AC_MSG_CHECKING(linker position independent executable support)
5984 if test $in_tree_ld = yes ; then
5986 # Full PIE support on Solaris was only introduced in gld 2.26.
5987 *-*-solaris2*) gcc_gld_pie_min_version=26 ;;
5988 *) gcc_gld_pie_min_version=15 ;;
5990 if test "$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 \
5991 && test $in_tree_ld_is_elf = yes; then
5994 elif test x$gcc_cv_ld != x; then
5995 # Check if linker supports -pie option
5996 if $gcc_cv_ld --help 2>&1 | grep -- -pie > /dev/null; then
6000 if echo "$ld_ver" | grep GNU > /dev/null \
6001 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
6008 *-*-solaris2.1[[1-9]]*)
6009 # Solaris 11.3 added PIE support.
6010 if $gcc_cv_ld -z help 2>&1 | grep -- type.*pie > /dev/null; then
6017 if test x"$gcc_cv_ld_pie" = xyes; then
6018 AC_DEFINE(HAVE_LD_PIE, 1,
6019 [Define if your linker supports PIE option.])
6021 AC_MSG_RESULT($gcc_cv_ld_pie)
6023 AC_MSG_CHECKING(linker PIE support with copy reloc)
6024 gcc_cv_ld_pie_copyreloc=no
6025 if test $gcc_cv_ld_pie = yes ; then
6026 if test $in_tree_ld = yes ; then
6027 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6028 gcc_cv_ld_pie_copyreloc=yes
6030 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6031 # Check if linker supports -pie option with copy reloc
6033 i?86-*-linux* | x86_64-*-linux*)
6034 cat > conftest1.s <<EOF
6037 .type a_glob, @object
6042 cat > conftest2.s <<EOF
6045 .type main, @function
6047 movl %eax, a_glob(%rip)
6050 .section .data.rel,"aw",@progbits
6055 if $gcc_cv_as --64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
6056 && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \
6057 && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
6058 && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then
6059 gcc_cv_ld_pie_copyreloc=yes
6061 rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s
6066 AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC,
6067 [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`],
6068 [Define 0/1 if your linker supports -pie option with copy reloc.])
6069 AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc)
6071 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
6072 gcc_cv_ld_eh_gc_sections=no
6073 if test $in_tree_ld = yes ; then
6074 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
6075 && test $in_tree_ld_is_elf = yes; then
6076 gcc_cv_ld_eh_gc_sections=yes
6078 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
6079 cat > conftest.s <<EOF
6082 .type _start, @function
6085 .size _start, .-_start
6086 .section .text.foo,"ax",@progbits
6087 .type foo, @function
6091 .section .gcc_except_table.foo,"a",@progbits
6094 .section .eh_frame,"a",@progbits
6097 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
6098 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
6099 | grep "gc-sections option ignored" > /dev/null; then
6100 gcc_cv_ld_eh_gc_sections=no
6101 elif $gcc_cv_objdump -h conftest 2> /dev/null \
6102 | grep gcc_except_table > /dev/null; then
6103 gcc_cv_ld_eh_gc_sections=yes
6104 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
6105 if test x$gcc_cv_as_comdat_group != xyes; then
6106 gcc_cv_ld_eh_gc_sections=no
6107 cat > conftest.s <<EOF
6110 .type _start, @function
6113 .size _start, .-_start
6114 .section .gnu.linkonce.t.foo,"ax",@progbits
6115 .type foo, @function
6119 .section .gcc_except_table.foo,"a",@progbits
6122 .section .eh_frame,"a",@progbits
6125 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
6126 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
6127 | grep "gc-sections option ignored" > /dev/null; then
6128 gcc_cv_ld_eh_gc_sections=no
6129 elif $gcc_cv_objdump -h conftest 2> /dev/null \
6130 | grep gcc_except_table > /dev/null; then
6131 gcc_cv_ld_eh_gc_sections=yes
6137 rm -f conftest.s conftest.o conftest
6141 # ??? This apparently exposes a binutils bug with PC-relative relocations.
6142 gcc_cv_ld_eh_gc_sections=no
6145 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
6146 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
6147 [Define if your linker supports garbage collection of
6148 sections in presence of EH frames.])
6150 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
6152 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
6153 gcc_cv_ld_eh_gc_sections_bug=no
6154 if test $in_tree_ld = yes ; then
6155 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
6156 && test $in_tree_ld_is_elf = yes; then
6157 gcc_cv_ld_eh_gc_sections_bug=yes
6159 elif test x$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
6160 gcc_cv_ld_eh_gc_sections_bug=yes
6161 cat > conftest.s <<EOF
6164 .type _start, @function
6167 .size _start, .-_start
6168 .section .text.startup.foo,"ax",@progbits
6169 .type foo, @function
6173 .section .gcc_except_table.foo,"a",@progbits
6176 .section .eh_frame,"a",@progbits
6179 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
6180 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
6181 | grep "gc-sections option ignored" > /dev/null; then
6183 elif $gcc_cv_objdump -h conftest 2> /dev/null \
6184 | grep gcc_except_table > /dev/null; then
6185 gcc_cv_ld_eh_gc_sections_bug=no
6188 rm -f conftest.s conftest.o conftest
6190 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
6191 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
6192 [Define if your linker has buggy garbage collection of
6193 sections support when .text.startup.foo like sections are used.])
6195 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
6197 AC_MSG_CHECKING(linker for compressed debug sections)
6198 # gold/gld support compressed debug sections since binutils 2.19/2.21
6199 # In binutils 2.26, gld gained support for the ELF gABI format.
6200 if test $in_tree_ld = yes ; then
6201 gcc_cv_ld_compress_debug=0
6202 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 19 -o "$gcc_cv_gld_major_version" -gt 2 \
6203 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = yes; then
6204 gcc_cv_ld_compress_debug=2
6205 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
6206 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 26 -o "$gcc_cv_gld_major_version" -gt 2 \
6207 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = no; then
6208 gcc_cv_ld_compress_debug=3
6209 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
6210 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2 \
6211 && test $in_tree_ld_is_elf = yes; then
6212 gcc_cv_ld_compress_debug=1
6214 elif echo "$ld_ver" | grep GNU > /dev/null; then
6215 if test "$ld_vers_major" -lt 2 \
6216 || test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 21; then
6217 gcc_cv_ld_compress_debug=0
6218 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
6219 gcc_cv_ld_compress_debug=1
6221 gcc_cv_ld_compress_debug=3
6222 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
6224 if test $ld_is_gold = yes; then
6225 gcc_cv_ld_compress_debug=2
6226 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
6232 # Introduced in Solaris 11.2.
6233 if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then
6234 gcc_cv_ld_compress_debug=3
6235 gcc_cv_ld_compress_debug_option="-z compress-sections"
6237 gcc_cv_ld_compress_debug=0
6241 # Assume linkers other than GNU ld don't support compessed debug
6243 gcc_cv_ld_compress_debug=0
6248 AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug,
6249 [Define to the level of your linker's compressed debug section support.])
6250 AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option",
6251 [Define to the linker option to enable compressed debug sections.])
6252 AC_MSG_RESULT($gcc_cv_ld_compress_debug)
6254 if test x"$ld64_flag" = x"yes"; then
6256 # Set defaults for possibly untestable items.
6257 gcc_cv_ld64_export_dynamic=0
6258 gcc_cv_ld64_platform_version=0
6260 if test "$build" = "$host"; then
6266 # On Darwin, because of FAT library support, it is often possible to execute
6267 # exes from compatible archs even when the host differs from the build system.
6268 case "$build","$host" in
6269 x86_64-*-darwin*,i?86-*-darwin* | powerpc64*-*-darwin*,powerpc*-*-darwin*)
6274 # If the configurer specified a minimum ld64 version to be supported, then use
6275 # that to determine feature support.
6276 if test x"${gcc_cv_ld64_version}" != x; then
6277 AC_MSG_CHECKING(ld64 specified version)
6278 gcc_cv_ld64_major=`echo "$gcc_cv_ld64_version" | sed -e 's/\..*//'`
6279 AC_MSG_RESULT($gcc_cv_ld64_major)
6280 if test "$gcc_cv_ld64_major" -ge 236; then
6281 gcc_cv_ld64_export_dynamic=1
6283 if test "$gcc_cv_ld64_major" -ge 512; then
6284 gcc_cv_ld64_platform_version=1
6286 elif test -x "$gcc_cv_ld" -a "$darwin_try_test" -eq 1; then
6287 # If the version was not specified, try to find it.
6288 AC_MSG_CHECKING(linker version)
6289 if test x"${gcc_cv_ld64_version}" = x; then
6290 gcc_cv_ld64_version=`$gcc_cv_ld -v 2>&1 | grep ld64 | sed s/.*ld64-// | awk '{print $1}'`
6292 AC_MSG_RESULT($gcc_cv_ld64_version)
6294 AC_MSG_CHECKING(linker for -export_dynamic support)
6295 gcc_cv_ld64_export_dynamic=1
6296 if $gcc_cv_ld -export_dynamic < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then
6297 gcc_cv_ld64_export_dynamic=0
6299 AC_MSG_RESULT($gcc_cv_ld64_export_dynamic)
6301 AC_MSG_CHECKING(linker for -platform_version support)
6302 gcc_cv_ld64_platform_version=1
6303 if $gcc_cv_ld -platform_version macos 10.5 0.0 < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then
6304 gcc_cv_ld64_platform_version=0
6306 AC_MSG_RESULT($gcc_cv_ld64_platform_version)
6309 if test x"${gcc_cv_ld64_version}" != x; then
6310 AC_DEFINE_UNQUOTED(LD64_VERSION, "${gcc_cv_ld64_version}",
6311 [Define to ld64 version.])
6314 AC_DEFINE_UNQUOTED(LD64_HAS_EXPORT_DYNAMIC, $gcc_cv_ld64_export_dynamic,
6315 [Define to 1 if ld64 supports '-export_dynamic'.])
6317 AC_DEFINE_UNQUOTED(LD64_HAS_PLATFORM_VERSION, $gcc_cv_ld64_platform_version,
6318 [Define to 1 if ld64 supports '-platform_version'.])
6321 if test x"$dsymutil_flag" = x"yes"; then
6323 # If the user specified a dsymutil path, then we will already have the
6324 # version string, otherwise, pick it up.
6325 if test x"$gcc_cv_dsymutil" = x; then
6326 AC_MSG_WARN([dsymutil is a required tool for this system, but not found])
6327 dsymutil_vers="tool unspecified"
6328 elif test x"$dsymutil_vers" = x; then
6329 dsymutil_vers=`$gcc_cv_dsymutil -v /dev/null 2>&1`
6332 dsymutil_temp=`echo $dsymutil_vers | sed 1q`
6333 AC_MSG_CHECKING(dsymutil version "$dsymutil_temp")
6334 if echo $dsymutil_temp | grep dwarfutils- > /dev/null; then
6335 dsymutil_kind=DWARFUTILS
6336 dsymutil_vers=`echo $dsymutil_temp | sed 's/.*dwarfutils-\([[0-9\.]]*\).*/\1/'`
6337 elif echo $dsymutil_temp | grep clang- > /dev/null; then
6339 dsymutil_vers=`echo $dsymutil_temp | sed 's/.*clang-\([[0-9\.]]*\).*/\1/'`
6340 elif echo $dsymutil_temp | grep 'LLVM version ' > /dev/null; then
6342 dsymutil_vers=`echo $dsymutil_temp | sed 's/.*LLVM\ version\ \([[0-9\.]]*\).*/\1/'`
6344 dsymutil_kind=UNKNOWN
6347 dsymutil_major=`expr "$dsymutil_vers" : '\([[0-9]]*\)'`
6348 dsymutil_minor=`expr "$dsymutil_vers" : '[[0-9]]*\.\([[0-9]]*\)'`
6349 dsymutil_tiny=`expr "$dsymutil_vers" : '[[0-9]]*\.[[0-9]]*\.\([[0-9]]*\)'`
6350 if test x"${dsymutil_minor}" = x; then
6353 if test x"${dsymutil_tiny}" = x; then
6356 AC_DEFINE_UNQUOTED(DSYMUTIL_VERSION, [$dsymutil_kind,${dsymutil_major},${dsymutil_minor},${dsymutil_tiny}],
6357 [Define to the dsymutil version.])
6358 AC_MSG_RESULT($dsymutil_vers : $dsymutil_kind ${dsymutil_major} ${dsymutil_minor} ${dsymutil_tiny} )
6362 win32 | pe | cygwin* | mingw32*)
6363 AC_MSG_CHECKING(broken PE linker dwarf5 support)
6364 gcc_cv_ld_broken_pe_dwarf5=yes
6365 if test $in_tree_ld = yes ; then
6366 if grep -q '\.debug_loclists.*BLOCK.*__section_alignment__.*NOLOAD.*:' \
6367 $gcc_cv_ld_gld_srcdir/scripttempl/pe*.sc \
6368 && grep -q '\.debug_rnglists.*BLOCK.*__section_alignment__.*NOLOAD.*:' \
6369 $gcc_cv_ld_gld_srcdir/scripttempl/pe*.sc; then
6370 gcc_cv_ld_broken_pe_dwarf5=no
6373 if $gcc_cv_ld --verbose 2>&1 | grep -q '\.debug_loclists.*BLOCK.*__section_alignment__.*NOLOAD.*:' \
6374 && $gcc_cv_ld --verbose 2>&1 | grep -q '\.debug_rnglists.*BLOCK.*__section_alignment__.*NOLOAD.*:'; then
6375 gcc_cv_ld_broken_pe_dwarf5=no
6378 if test x$gcc_cv_ld_broken_pe_dwarf5 = xyes; then
6379 AC_DEFINE(HAVE_LD_BROKEN_PE_DWARF5, 1,
6380 [Define if the PE linker has broken DWARF 5 support.])
6382 AC_MSG_RESULT($gcc_cv_ld_broken_pe_dwarf5)
6384 AC_MSG_CHECKING(PE linker --disable-dynamicbase support)
6385 gcc_cv_ld_disable_dynamicbase=no
6386 if test $in_tree_ld = yes; then
6387 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 36 -o "$gcc_cv_gld_major_version" -gt 2; then \
6388 gcc_cv_ld_disable_dynamicbase=yes
6391 if $gcc_cv_ld --help 2>&1 | grep -q 'disable\-]dynamicbase' > /dev/null; then
6392 gcc_cv_ld_disable_dynamicbase=yes
6395 if test x"$gcc_cv_ld_disable_dynamicbase" = xyes; then
6396 AC_DEFINE(HAVE_LD_PE_DISABLE_DYNAMICBASE, 1,
6397 [Define if the PE linker supports --disable-dynamicbase option.])
6399 AC_MSG_RESULT($gcc_cv_ld_disable_dynamicbase)
6407 AC_CACHE_CHECK(linker --as-needed support,
6408 gcc_cv_ld_as_needed,
6409 [gcc_cv_ld_as_needed=no
6410 gcc_cv_ld_as_needed_option='--as-needed'
6411 gcc_cv_ld_no_as_needed_option='--no-as-needed'
6412 if test $in_tree_ld = yes ; then
6413 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
6414 && test $in_tree_ld_is_elf = yes; then
6415 gcc_cv_ld_as_needed=yes
6416 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 28; then
6417 gcc_cv_ld_as_needed_option='--push-state --as-needed'
6418 gcc_cv_ld_no_as_needed_option='--pop-state'
6421 elif test x$gcc_cv_ld != x; then
6422 # Check if linker supports --as-needed and --no-as-needed options
6423 if $gcc_cv_ld --help 2>&1 | grep as-needed > /dev/null; then
6424 gcc_cv_ld_as_needed=yes
6425 if $gcc_cv_ld --help 2>&1 | grep push-state > /dev/null \
6426 && $gcc_cv_ld --help 2>&1 | grep pop-state > /dev/null \
6427 && echo "$ld_ver" | grep GNU > /dev/null \
6428 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 28; then
6429 # Use these options only when both ld.bfd and ld.gold support
6430 # --push-state/--pop-state, which unfortunately wasn't added
6432 gcc_cv_ld_as_needed_option='--push-state --as-needed'
6433 gcc_cv_ld_no_as_needed_option='--pop-state'
6436 case "$target:$gnu_ld" in
6438 # Solaris 2 ld always supports -z ignore/-z record. Prefer the native
6440 gcc_cv_ld_as_needed=yes
6441 gcc_cv_ld_as_needed_option="-z ignore"
6442 gcc_cv_ld_no_as_needed_option="-z record"
6446 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
6447 # dl_iterate_phdr, i.e. since Solaris 11.
6449 *-*-solaris2.1[[1-9]]*)
6451 i?86-*-* | x86_64-*-*)
6452 if echo "$ld_ver" | grep GNU > /dev/null; then
6453 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
6454 gcc_cv_ld_as_needed=no
6460 gcc_cv_ld_as_needed=no
6464 if test x"$gcc_cv_ld_as_needed" = xyes; then
6465 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
6466 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
6467 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
6468 [Define to the linker option to ignore unused dependencies.])
6469 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
6470 [Define to the linker option to keep unused dependencies.])
6473 AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities)
6474 saved_LDFLAGS="$LDFLAGS"
6475 for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do
6476 LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map"
6477 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
6478 [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no])
6480 LDFLAGS="$saved_LDFLAGS"
6481 if test "x$gcc_cv_ld_clearcap" = xyes; then
6482 AC_DEFINE([HAVE_LD_CLEARCAP], 1,
6483 [Define if the linker supports clearing hardware capabilities via mapfile.])
6484 AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map])
6486 AC_MSG_RESULT($gcc_cv_ld_clearcap)
6492 emul_name="-melf32lppc"
6495 emul_name="-melf32ppc"
6498 AC_CACHE_CHECK(linker .gnu.attributes long double support,
6500 [gcc_cv_ld_ppc_attr=no
6501 if test x"$ld_is_gold" = xyes; then
6502 gcc_cv_ld_ppc_attr=yes
6503 elif test $in_tree_ld = yes ; then
6504 if test "$gcc_cv_gld_major_version" -eq 2 \
6505 -a "$gcc_cv_gld_minor_version" -ge 28 \
6506 -o "$gcc_cv_gld_major_version" -gt 2; then
6507 gcc_cv_ld_ppc_attr=yes
6509 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6510 # check that merging the long double .gnu_attribute doesn't warn
6511 cat > conftest1.s <<EOF
6514 cat > conftest2.s <<EOF
6517 if $gcc_cv_as -a32 -o conftest1.o conftest1.s > /dev/null 2>&1 \
6518 && $gcc_cv_as -a32 -o conftest2.o conftest2.s > /dev/null 2>&1 \
6519 && $gcc_cv_ld $emul_name -r -o conftest.o conftest1.o conftest2.o > /dev/null 2> conftest.err \
6520 && test ! -s conftest.err; then
6521 gcc_cv_ld_ppc_attr=yes
6523 rm -f conftest.err conftest.o conftest1.o conftest2.o conftest1.s conftest2.s
6526 if test x$gcc_cv_ld_ppc_attr = xyes; then
6527 AC_DEFINE(HAVE_LD_PPC_GNU_ATTR_LONG_DOUBLE, 1,
6528 [Define if your PowerPC linker has .gnu.attributes long double support.])
6533 case "$target:$tm_file" in
6534 powerpc64*-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
6537 emul_name="-melf64lppc"
6540 emul_name="-melf64ppc"
6543 emul_name="-melf64lppc_fbsd"
6546 emul_name="-melf64ppc_fbsd"
6549 AC_CACHE_CHECK(linker support for omitting dot symbols,
6550 gcc_cv_ld_no_dot_syms,
6551 [gcc_cv_ld_no_dot_syms=no
6552 if test x"$ld_is_gold" = xyes; then
6553 gcc_cv_ld_no_dot_syms=yes
6554 elif test $in_tree_ld = yes ; then
6555 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
6556 gcc_cv_ld_no_dot_syms=yes
6558 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6559 cat > conftest1.s <<EOF
6563 cat > conftest2.s <<EOF
6564 .section ".opd","aw"
6569 .quad .LEfoo,.TOC.@tocbase,0
6575 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
6576 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
6577 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
6578 gcc_cv_ld_no_dot_syms=yes
6580 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
6583 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
6584 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
6585 [Define if your PowerPC64 linker only needs function descriptor syms.])
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"$ld_is_gold" = xyes; then
6592 gcc_cv_ld_large_toc=yes
6593 elif test $in_tree_ld = yes ; then
6594 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
6595 gcc_cv_ld_large_toc=yes
6597 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6598 cat > conftest.s <<EOF
6599 .section ".tbss","awT",@nobits
6605 addis 9,13,ie0@got@tprel@ha
6606 ld 9,ie0@got@tprel@l(9)
6608 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
6609 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
6610 gcc_cv_ld_large_toc=yes
6612 rm -f conftest conftest.o conftest.s
6615 if test x"$gcc_cv_ld_large_toc" = xyes; then
6616 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
6617 [Define if your PowerPC64 linker supports a large TOC.])
6620 AC_CACHE_CHECK(linker toc pointer alignment,
6621 gcc_cv_ld_toc_align,
6622 [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then
6623 cat > conftest.s <<EOF
6628 .section .data.rel.ro,"aw",@progbits
6633 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
6634 && $gcc_cv_ld $emul_name -z norelro -o conftest conftest.o > /dev/null 2>&1; then
6635 gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'`
6637 rm -f conftest conftest.o conftest.s
6640 if test -n "$gcc_cv_ld_toc_align" && test $gcc_cv_ld_toc_align -gt 8; then
6641 AC_DEFINE_UNQUOTED(POWERPC64_TOC_POINTER_ALIGNMENT, $gcc_cv_ld_toc_align,
6642 [Define to .TOC. alignment forced by your linker.])
6649 AC_CACHE_CHECK(linker large toc support,
6650 gcc_cv_ld_large_toc,
6651 [gcc_cv_ld_large_toc=no
6652 if test x$gcc_cv_as != x ; then
6653 cat > conftest.s <<EOF
6663 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
6664 gcc_cv_ld_large_toc=yes
6666 rm -f conftest conftest.o conftest.s
6669 if test x"$gcc_cv_ld_large_toc" = xyes; then
6670 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
6671 [Define if your PowerPC64 linker supports a large TOC.])
6676 AC_CACHE_CHECK(linker --build-id support,
6678 [gcc_cv_ld_buildid=no
6679 if test $in_tree_ld = yes ; then
6680 if test "$gcc_cv_gld_major_version" -eq 2 -a \
6681 "$gcc_cv_gld_minor_version" -ge 18 -o \
6682 "$gcc_cv_gld_major_version" -gt 2 \
6683 && test $in_tree_ld_is_elf = yes; then
6684 gcc_cv_ld_buildid=yes
6686 elif test x$gcc_cv_ld != x; then
6687 if $gcc_cv_ld --help 2>&1 | grep build-id > /dev/null; then
6688 gcc_cv_ld_buildid=yes
6691 if test x"$gcc_cv_ld_buildid" = xyes; then
6692 AC_DEFINE(HAVE_LD_BUILDID, 1,
6693 [Define if your linker supports --build-id.])
6696 AC_ARG_ENABLE(linker-build-id,
6697 [AS_HELP_STRING([--enable-linker-build-id],
6698 [compiler will always pass --build-id to linker])],
6700 enable_linker_build_id=no)
6702 if test x"$enable_linker_build_id" = xyes; then
6703 if test x"$gcc_cv_ld_buildid" = xyes; then
6704 AC_DEFINE(ENABLE_LD_BUILDID, 1,
6705 [Define if gcc should always pass --build-id to linker.])
6707 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
6711 # In binutils 2.21, GNU ld gained support for new emulations fully
6712 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
6713 AC_CACHE_CHECK(linker *_sol2 emulation support,
6714 gcc_cv_ld_sol2_emulation,
6715 [gcc_cv_ld_sol2_emulation=no
6716 if test $in_tree_ld = yes ; then
6717 if test "$gcc_cv_gld_major_version" -eq 2 -a \
6718 "$gcc_cv_gld_minor_version" -ge 21 -o \
6719 "$gcc_cv_gld_major_version" -gt 2 \
6720 && test $in_tree_ld_is_elf = yes; then
6721 gcc_cv_ld_sol2_emulation=yes
6723 elif test x$gcc_cv_ld != x; then
6724 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
6725 grep _sol2 > /dev/null; then
6726 gcc_cv_ld_sol2_emulation=yes
6729 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
6730 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
6731 [Define if your linker supports the *_sol2 emulations.])
6734 AC_CACHE_CHECK(linker --sysroot support,
6736 [gcc_cv_ld_sysroot=no
6737 if test $in_tree_ld = yes ; then
6738 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
6739 gcc_cv_ld_sysroot=yes
6741 elif test x$gcc_cv_ld != x; then
6742 if $gcc_cv_ld --help 2>&1 | grep sysroot > /dev/null; then
6743 gcc_cv_ld_sysroot=yes
6746 if test x"$gcc_cv_ld_sysroot" = xyes; then
6747 AC_DEFINE(HAVE_LD_SYSROOT, 1,
6748 [Define if your linker supports --sysroot.])
6753 # Check for system-provided CRTs on Solaris 11.x and Solaris 12.
6754 AC_CACHE_CHECK([system-provided CRTs on Solaris],
6755 gcc_cv_solaris_crts,
6756 [gcc_cv_solaris_crts=no
6757 if test x$host != x$target; then
6758 if test "x$with_sysroot" = xyes; then
6759 target_sysroot="${test_exec_prefix}/${target_noncanonical}/sys-root"
6761 target_sysroot="${with_sysroot}"
6764 target_libdir="$target_sysroot/usr/lib"
6765 # At the time they were added, gcrt1.o became a symlink for backwards
6766 # compatibility on x86, while crt1.o was added on sparc, so check for that.
6768 i?86-*-solaris2* | x86_64-*-solaris2*)
6769 if test -h "$target_libdir/gcrt1.o"; then gcc_cv_solaris_crts=yes; fi
6772 if test -f "$target_libdir/crt1.o"; then gcc_cv_solaris_crts=yes; fi
6777 if test x$gcc_cv_solaris_crts = xyes; then
6778 AC_DEFINE(HAVE_SOLARIS_CRTS, 1,
6779 [Define if the system-provided CRTs are present on Solaris.])
6782 AC_ARG_ENABLE(libssp,
6783 [AS_HELP_STRING([--enable-libssp], [enable linking against libssp])],
6784 [case "${enableval}" in
6788 AC_MSG_ERROR([unknown libssp setting $enableval])
6792 # Test for stack protector support in target C library.
6793 AC_CACHE_CHECK(__stack_chk_fail in target C library,
6794 gcc_cv_libc_provides_ssp,
6795 [gcc_cv_libc_provides_ssp=no
6796 if test "x$enable_libssp" = "xno"; then
6797 gcc_cv_libc_provides_ssp=yes
6798 elif test "x$enable_libssp" = "xyes"; then
6799 gcc_cv_libc_provides_ssp=no
6803 # All versions of musl provide stack protector
6804 gcc_cv_libc_provides_ssp=yes;;
6805 *-*-linux* | *-*-kfreebsd*-gnu)
6806 # glibc 2.4 and later provides __stack_chk_fail and
6807 # either __stack_chk_guard, or TLS access to stack guard canary.
6808 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
6809 [if test -f $target_header_dir/features.h \
6810 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
6811 $target_header_dir/features.h > /dev/null; then
6812 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
6813 $target_header_dir/features.h > /dev/null && \
6814 test -f $target_header_dir/bits/uClibc_config.h && \
6815 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
6816 $target_header_dir/bits/uClibc_config.h > /dev/null; then
6817 gcc_cv_libc_provides_ssp=yes
6819 # all versions of Bionic support stack protector
6820 elif test -f $target_header_dir/sys/cdefs.h \
6821 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
6822 $target_header_dir/sys/cdefs.h > /dev/null; then
6823 gcc_cv_libc_provides_ssp=yes
6827 # Avoid complicated tests (see
6828 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
6829 # simply assert that glibc does provide this, which is true for all
6830 # realistically usable GNU/Hurd configurations.
6831 # All supported versions of musl provide it as well
6832 gcc_cv_libc_provides_ssp=yes;;
6833 *-*-darwin* | *-*-freebsd* | *-*-netbsd*)
6834 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
6835 [echo "no __stack_chk_fail on this target"])
6837 *) gcc_cv_libc_provides_ssp=no ;;
6841 if test x$gcc_cv_libc_provides_ssp = xyes; then
6842 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
6843 [Define if your target C library provides stack protector support])
6846 # Check whether --enable-default-ssp was given.
6847 AC_ARG_ENABLE(default-ssp,
6848 [AS_HELP_STRING([--enable-default-ssp],
6849 [enable Stack Smashing Protection as default])],[
6850 if test x$gcc_cv_libc_provides_ssp = xyes; then
6852 ia64*-*-*) enable_default_ssp=no ;;
6853 *) enable_default_ssp=$enableval ;;
6856 enable_default_ssp=no
6858 enable_default_ssp=no)
6859 if test x$enable_default_ssp = xyes ; then
6860 AC_DEFINE(ENABLE_DEFAULT_SSP, 1,
6861 [Define if your target supports default stack protector and it is enabled.])
6863 AC_SUBST([enable_default_ssp])
6865 # Test for <sys/sdt.h> on the target.
6866 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
6867 AC_MSG_CHECKING(sys/sdt.h in the target C library)
6869 if test -f $target_header_dir/sys/sdt.h; then
6871 AC_DEFINE(HAVE_SYS_SDT_H, 1,
6872 [Define if your target C library provides sys/sdt.h])
6874 AC_MSG_RESULT($have_sys_sdt_h)
6876 # Check if TFmode long double should be used by default or not.
6877 # Some glibc targets used DFmode long double, but with glibc 2.4
6878 # and later they can use TFmode.
6880 powerpc*-*-linux* | \
6884 AC_ARG_WITH(long-double-128,
6885 [AS_HELP_STRING([--with-long-double-128],
6886 [use 128-bit long double by default])],
6887 gcc_cv_target_ldbl128="$with_long_double_128", [
6889 s390*-*-linux-musl*)
6890 gcc_cv_target_ldbl128=yes
6892 powerpc*-*-linux-musl*)
6893 gcc_cv_target_ldbl128=no
6896 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
6897 [gcc_cv_target_ldbl128=no
6898 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
6899 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
6900 && gcc_cv_target_ldbl128=yes
6908 if test x$gcc_cv_target_ldbl128 = xyes; then
6909 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
6910 [Define if TFmode long double should be the default])
6913 # Check if TFmode long double target should use the IBM extended double or IEEE
6914 # 128-bit floating point formats if long doubles are 128-bits long. The long
6915 # double type can only be switched on powerpc64 bit Linux systems where VSX is
6916 # supported. Other PowerPC systems do not build the IEEE 128-bit emulator in
6918 AC_ARG_WITH([long-double-format],
6919 [AS_HELP_STRING([--with-long-double-format={ieee,ibm}]
6920 [Specify whether PowerPC long double uses IEEE or IBM format])],[
6921 case "$target:$with_long_double_format" in
6922 powerpc64le-*-linux*:ieee | powerpc64le-*-linux*:ibm)
6925 powerpc64-*-linux*:ieee | powerpc64-*-linux*:ibm)
6926 # IEEE 128-bit emulation is only built on 64-bit VSX Linux systems
6928 power7 | power8 | power9 | power1*)
6932 AC_MSG_ERROR([Configuration option --with-long-double-format is only \
6933 supported if the default cpu is power7 or newer])
6934 with_long_double_format=""
6938 powerpc64*-*-linux*:*)
6939 AC_MSG_ERROR([--with-long-double-format argument should be ibm or ieee])
6940 with_long_double_format=""
6943 AC_MSG_ERROR([Configure option --with-long-double-format is only supported \
6944 on 64-bit PowerPC VSX Linux systems])
6945 with_long_double_format=""
6950 # Check if the target LIBC supports exporting the AT_PLATFORM and AT_HWCAP
6951 # values in the TCB. Currently, only GLIBC 2.23 and later support this.
6952 gcc_cv_libc_provides_hwcap_in_tcb=no
6955 GCC_GLIBC_VERSION_GTE_IFELSE([2], [23], [gcc_cv_libc_provides_hwcap_in_tcb=yes], )
6958 if test x$gcc_cv_libc_provides_hwcap_in_tcb = xyes; then
6959 AC_DEFINE(TARGET_LIBC_PROVIDES_HWCAP_IN_TCB, 1,
6960 [Define if your target C Library provides the AT_HWCAP value in the TCB])
6963 # Check if the target LIBC handles PT_GNU_STACK.
6964 gcc_cv_libc_gnustack=unknown
6967 GCC_GLIBC_VERSION_GTE_IFELSE([2], [31], [gcc_cv_libc_gnustack=yes], )
6970 if test x$gcc_cv_libc_gnustack = xyes; then
6971 AC_DEFINE(TARGET_LIBC_GNUSTACK, 1,
6972 [Define if your target C Library properly handles PT_GNU_STACK])
6975 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
6976 gcc_cv_target_dl_iterate_phdr=unknown
6979 # <link.h> needs both a dl_iterate_phdr declaration and support for
6980 # compilation with largefile support.
6981 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
6982 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
6983 gcc_cv_target_dl_iterate_phdr=yes
6985 gcc_cv_target_dl_iterate_phdr=no
6988 *-*-dragonfly* | *-*-freebsd*)
6989 if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then
6990 gcc_cv_target_dl_iterate_phdr=yes
6992 gcc_cv_target_dl_iterate_phdr=no
6996 gcc_cv_target_dl_iterate_phdr=yes
6999 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
7000 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
7001 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
7002 [Define if your target C library provides the `dl_iterate_phdr' function.])
7004 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
7006 # We no longer support different GC mechanisms. Emit an error if
7007 # the user configures with --with-gc.
7009 [AS_HELP_STRING([--with-gc={page,zone}],
7010 [this option is not supported anymore. It used to choose
7011 the garbage collection mechanism to use with the compiler])],
7012 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
7015 # Libraries to use on the host. This will normally be set by the top
7016 # level Makefile. Here we simply capture the value for our Makefile.
7017 if test -z "${HOST_LIBS+set}"; then
7022 # Use the system's zlib library.
7025 dnl Very limited version of automake's enable-maintainer-mode
7027 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
7028 dnl maintainer-mode is disabled by default
7029 AC_ARG_ENABLE(maintainer-mode,
7030 [AS_HELP_STRING([--enable-maintainer-mode],
7031 [enable make rules and dependencies not useful
7032 (and sometimes confusing) to the casual installer])],
7033 maintainer_mode=$enableval,
7036 AC_MSG_RESULT($maintainer_mode)
7038 if test "$maintainer_mode" = "yes"; then
7045 dnl Variables for tags utilities; copied from automake 1.16.4+'s init.m4
7046 if test -z "$CTAGS"; then
7050 if test -z "$ETAGS"; then
7054 if test -z "$CSCOPE"; then
7059 dnl Whether to prevent multiple front-ends from linking at the same time
7061 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
7062 AC_ARG_ENABLE(link-mutex,
7063 [AS_HELP_STRING([--enable-link-mutex],
7064 [avoid linking multiple front-ends at once to avoid thrashing
7065 on the build machine])],
7066 do_link_mutex=$enableval,
7068 AC_MSG_RESULT($do_link_mutex)
7070 if test "$do_link_mutex" = "yes"; then
7075 AC_SUBST(DO_LINK_MUTEX)
7077 dnl Whether to prevent multiple GCC front-ends from linking at the same time
7079 AC_MSG_CHECKING([whether to serialize linking of multiple front-ends])
7080 AC_ARG_ENABLE(link-serialization,
7081 [AS_HELP_STRING([--enable-link-serialization],
7082 [avoid linking multiple GCC front-ends at once using make
7083 dependencies to avoid thrashing on the build machine])],
7084 do_link_serialization=$enableval,
7085 do_link_serialization=no)
7086 AC_MSG_RESULT($do_link_serialization)
7088 case "$do_link_serialization" in
7090 DO_LINK_SERIALIZATION=1;;
7091 [[1-9]] | [[1-9]][[0-9]] | [[1-9]][[0-9]][[0-9]])
7092 DO_LINK_SERIALIZATION=$do_link_serialization;;
7094 DO_LINK_SERIALIZATION=;;
7096 AC_MSG_ERROR(bad value ${do_link_serialization} given for --enable-link-serialization) ;;
7098 AC_SUBST(DO_LINK_SERIALIZATION)
7104 # Make empty files to contain the specs and options for each language.
7105 # Then add #include lines to for a compiler that has specs and/or options.
7111 # These (without "all_") are set in each config-lang.in.
7112 # `language' must be a single word so is spelled singularly.
7115 all_outputs='Makefile'
7116 # List of language configure and makefile fragments.
7117 all_lang_configurefrags=
7119 # Additional files for gengtype
7120 all_gtfiles="$target_gtfiles"
7122 # These are the languages that are set in --enable-languages,
7123 # and are available in the GCC tree.
7124 all_selected_languages=
7126 # Add the language fragments.
7127 # Languages are added via two mechanisms. Some information must be
7128 # recorded in makefile variables, these are defined in config-lang.in.
7129 # We accumulate them and plug them into the main Makefile.
7130 # The other mechanism is a set of hooks for each of the main targets
7131 # like `clean', `install', etc.
7133 language_hooks="Make-hooks"
7135 for lang in ${srcdir}/*/config-lang.in
7138 test "$lang" = "${srcdir}/*/config-lang.in" && continue
7140 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
7141 if test "x$lang_alias" = x
7143 echo "$lang doesn't set \$language." 1>&2
7146 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
7147 subdirs="$subdirs $subdir"
7149 # $gcc_subdir is where the gcc integration files are to be found
7150 # for a language, both for internal compiler purposes (compiler
7151 # sources implementing front-end to GCC tree converters), and for
7152 # build infrastructure purposes (Make-lang.in, etc.)
7154 # This will be <subdir> (relative to $srcdir) if a line like
7155 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
7156 # is found in <langdir>/config-lang.in, and will remain <langdir>
7159 # Except for the language alias (fetched above), the regular
7160 # "config-lang.in" contents are always retrieved from $gcc_subdir,
7161 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
7162 # only this and the language alias.
7164 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
7165 if [ "$gcc_subdir" = "" ]; then
7166 gcc_subdir="$subdir"
7169 case ",$enable_languages," in
7171 all_selected_languages="$all_selected_languages $lang_alias"
7172 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
7173 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
7185 . ${srcdir}/$gcc_subdir/config-lang.in
7186 if test "x$language" = x
7188 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
7193 case ",$enable_languages," in
7196 for i in $subdir_requires; do
7197 test -f "${srcdir}/$i/config-lang.in" && continue
7205 all_lang_configurefrags="$all_lang_configurefrags \$(srcdir)/$gcc_subdir/config-lang.in"
7206 if test "x$language" = xc && test -n "$all_lang_makefrags"; then
7207 # Put c/Make-lang.in fragment first to match serialization languages order.
7208 all_lang_makefrags="\$(srcdir)/$gcc_subdir/Make-lang.in $all_lang_makefrags"
7210 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
7212 if test -f $srcdir/$gcc_subdir/lang.opt; then
7213 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
7214 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
7216 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
7217 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
7219 all_languages="$all_languages $language"
7220 all_compilers="$all_compilers $compilers"
7221 all_outputs="$all_outputs $outputs"
7222 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
7223 case ",$enable_languages," in
7225 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
7227 AC_SUBST(enable_lto)
7234 for language in $all_selected_languages
7236 check_languages="$check_languages check-$language"
7240 for language in $all_selected_languages
7242 selftest_languages="$selftest_languages selftest-$language"
7245 # We link each language in with a set of hooks, reached indirectly via
7246 # lang.${target}. Only do so for selected languages.
7250 target_list="all.cross start.encap rest.encap tags \
7251 install-common install-man install-info install-dvi install-pdf \
7252 install-html dvi pdf html uninstall info man srcextra srcman srcinfo \
7253 mostlyclean clean distclean maintainer-clean install-plugin"
7255 for t in $target_list
7258 for lang in $all_selected_languages
7262 echo "lang.$t: $x" >> Make-hooks
7265 echo "ifeq (\$(DO_LINK_SERIALIZATION),)" >> Make-hooks
7266 echo "SERIAL_LIST =" >> Make-hooks
7267 echo else >> Make-hooks
7271 serialization_languages=c
7272 for lang in $all_selected_languages
7274 test $lang = c && continue
7275 if test $lang = lto; then
7276 serialization_languages="$serialization_languages lto1 lto2"
7278 serialization_languages="$serialization_languages $lang"
7281 for lang in $serialization_languages
7283 test $lang = c && continue
7284 lang_cnt=`expr $lang_cnt + 1`
7285 lang_list=" $prev$lang_list"
7288 echo "SERIAL_LIST = \$(wordlist \$(DO_LINK_SERIALIZATION),$lang_cnt,$lang_list)" >> Make-hooks
7289 echo endif >> Make-hooks
7290 echo "SERIAL_COUNT = `expr $lang_cnt + 1`" >> Make-hooks
7291 echo "INDEX.c = 0" >> Make-hooks
7293 for lang in $serialization_languages
7295 test $lang = c && continue
7296 echo "$lang.prev = \$(if \$(word $lang_cnt,\$(SERIAL_LIST)),\$(\$(word $lang_cnt,\$(SERIAL_LIST)).serial))" >> Make-hooks
7297 echo "INDEX.$lang = $lang_idx" >> Make-hooks
7298 lang_cnt=`expr $lang_cnt - 1`
7299 lang_idx=`expr $lang_idx + 1`
7303 # Option include files
7306 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
7307 option_includes="option-includes.mk"
7308 AC_SUBST_FILE(option_includes)
7316 echo "dir ." > .gdbinit
7317 echo "dir ${srcdir}" >> .gdbinit
7318 if test x$gdb_needs_out_file_path = xyes
7320 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
7322 if test "x$subdirs" != x; then
7325 echo "dir ${srcdir}/$s" >> .gdbinit
7328 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
7329 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
7331 # Put a breakpoint on __asan_report_error to help with debugging buffer
7334 *-fsanitize=address*)
7335 echo "source ${srcdir}/gdbasan.in" >> .gdbinit
7339 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
7340 AC_SUBST(gcc_tooldir)
7343 # Find a directory in which to install a shared libgcc.
7345 AC_ARG_ENABLE(version-specific-runtime-libs,
7346 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
7347 [specify that runtime libraries should be
7348 installed in a compiler-specific directory])])
7350 # Substitute configuration variables
7353 AC_SUBST(all_compilers)
7354 AC_SUBST(all_gtfiles)
7355 AC_SUBST(all_lang_configurefrags)
7356 AC_SUBST(all_lang_makefrags)
7357 AC_SUBST(all_languages)
7358 AC_SUBST(all_selected_languages)
7359 AC_SUBST(build_exeext)
7360 AC_SUBST(build_install_headers_dir)
7361 AC_SUBST(build_xm_file_list)
7362 AC_SUBST(build_xm_include_list)
7363 AC_SUBST(build_xm_defines)
7364 AC_SUBST(build_file_translate)
7365 AC_SUBST(check_languages)
7366 AC_SUBST(selftest_languages)
7367 AC_SUBST(cpp_install_dir)
7368 AC_SUBST(xmake_file)
7369 AC_SUBST(tmake_file)
7370 AC_SUBST(TM_ENDIAN_CONFIG)
7371 AC_SUBST(TM_MULTILIB_CONFIG)
7372 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
7373 AC_SUBST(extra_gcc_objs)
7374 AC_SUBST(user_headers_inc_next_pre)
7375 AC_SUBST(user_headers_inc_next_post)
7376 AC_SUBST(extra_headers_list)
7377 AC_SUBST(extra_objs)
7378 AC_SUBST(extra_programs)
7379 AC_SUBST(float_h_file)
7380 AC_SUBST(gcc_config_arguments)
7381 AC_SUBST(gcc_gxx_include_dir)
7382 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
7383 AC_SUBST(gcc_gxx_libcxx_include_dir)
7384 AC_SUBST(gcc_gxx_libcxx_include_dir_add_sysroot)
7385 AC_SUBST(host_exeext)
7386 AC_SUBST(host_xm_file_list)
7387 AC_SUBST(host_xm_include_list)
7388 AC_SUBST(host_xm_defines)
7389 AC_SUBST(out_host_hook_obj)
7391 AC_SUBST(lang_opt_files)
7392 AC_SUBST(lang_specs_files)
7393 AC_SUBST(lang_tree_files)
7394 AC_SUBST(local_prefix)
7396 AC_SUBST(objc_boehm_gc)
7398 AC_SUBST(out_object_file)
7399 AC_SUBST(common_out_file)
7400 AC_SUBST(common_out_object_file)
7401 AC_SUBST(tm_file_list)
7402 AC_SUBST(tm_include_list)
7403 AC_SUBST(tm_defines)
7404 AC_SUBST(tm_p_file_list)
7405 AC_SUBST(tm_p_include_list)
7406 AC_SUBST(tm_d_file_list)
7407 AC_SUBST(tm_d_include_list)
7408 AC_SUBST(xm_file_list)
7409 AC_SUBST(xm_include_list)
7410 AC_SUBST(xm_defines)
7411 AC_SUBST(use_gcc_stdint)
7412 AC_SUBST(c_target_objs)
7413 AC_SUBST(cxx_target_objs)
7414 AC_SUBST(fortran_target_objs)
7415 AC_SUBST(d_target_objs)
7416 AC_SUBST(target_cpu_default)
7418 AC_SUBST_FILE(language_hooks)
7421 if test x${build} = x${host} ; then
7422 if test x${host} = x${target} ; then
7423 echo "Links are now set up to build a native compiler for ${target}." 1>&2
7425 echo "Links are now set up to build a cross-compiler" 1>&2
7426 echo " from ${host} to ${target}." 1>&2
7429 if test x${host} = x${target} ; then
7430 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
7431 echo " for ${target}." 1>&2
7433 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
7434 echo " from ${host} to ${target}." 1>&2
7438 AC_ARG_VAR(GMPLIBS,[How to link GMP])
7439 AC_ARG_VAR(GMPINC,[How to find GMP include files])
7441 AC_ARG_VAR(ISLLIBS,[How to link isl])
7442 AC_ARG_VAR(ISLINC,[How to find isl include files])
7443 if test "x${ISLLIBS}" != "x" ; then
7444 AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.])
7448 AC_SUBST(pluginlibs)
7449 AC_SUBST(enable_plugin)
7450 if test x"$enable_plugin" = x"yes"; then
7451 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
7455 # Enable --enable-host-shared
7456 AC_ARG_ENABLE(host-shared,
7457 [AS_HELP_STRING([--enable-host-shared],
7458 [build host code as shared libraries])],
7459 [PICFLAG=-fPIC], [PICFLAG=])
7460 AC_SUBST(enable_host_shared)
7464 AC_ARG_ENABLE(libquadmath-support,
7465 [AS_HELP_STRING([--disable-libquadmath-support],
7466 [disable libquadmath support for Fortran])],
7467 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
7468 ENABLE_LIBQUADMATH_SUPPORT=yes)
7469 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
7470 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
7471 [Define to 1 to enable libquadmath support])
7475 # Specify what hash style to use by default.
7476 AC_ARG_WITH([linker-hash-style],
7477 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
7478 [specify the linker hash style])],
7479 [case x"$withval" in
7481 LINKER_HASH_STYLE=sysv
7484 LINKER_HASH_STYLE=gnu
7487 LINKER_HASH_STYLE=both
7490 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
7493 [LINKER_HASH_STYLE=''])
7494 if test x"${LINKER_HASH_STYLE}" != x; then
7495 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
7496 [The linker hash style])
7499 # Specify what should be the default of -fdiagnostics-color option.
7500 AC_ARG_WITH([diagnostics-color],
7501 [AC_HELP_STRING([--with-diagnostics-color={never,auto,auto-if-env,always}],
7502 [specify the default of -fdiagnostics-color option
7503 auto-if-env stands for -fdiagnostics-color=auto if
7504 GCC_COLOR environment variable is present and
7505 -fdiagnostics-color=never otherwise])],
7506 [case x"$withval" in
7508 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_NO
7511 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO
7514 DIAGNOSTICS_COLOR_DEFAULT=-1
7517 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_YES
7520 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-color])
7523 [DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO])
7524 AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT,
7525 [The default for -fdiagnostics-color option])
7527 # Specify what should be the default of -fdiagnostics-urls option.
7528 AC_ARG_WITH([diagnostics-urls],
7529 [AC_HELP_STRING([--with-diagnostics-urls={never,auto,auto-if-env,always}],
7530 [specify the default of -fdiagnostics-urls option
7531 auto-if-env stands for -fdiagnostics-urls=auto if
7532 GCC_URLS or TERM_URLS environment variable is present and
7533 -fdiagnostics-urls=never otherwise])],
7534 [case x"$withval" in
7536 DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_NO
7539 DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_AUTO
7542 DIAGNOSTICS_URLS_DEFAULT=-1
7545 DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_YES
7548 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-urls])
7551 [DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_AUTO])
7552 AC_DEFINE_UNQUOTED(DIAGNOSTICS_URLS_DEFAULT, $DIAGNOSTICS_URLS_DEFAULT,
7553 [The default for -fdiagnostics-urls option])
7555 # Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit
7556 # of jit/jit-playback.c.
7557 gcc_driver_version=`eval "${get_gcc_base_ver} $srcdir/BASE-VER"`
7558 echo "gcc_driver_version: ${gcc_driver_version}"
7559 cat > gcc-driver-name.h <<EOF
7560 #define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_driver_version}${exeext}"
7563 # Check whether --enable-default-pie was given.
7564 AC_ARG_ENABLE(default-pie,
7565 [AS_HELP_STRING([--enable-default-pie],
7566 [enable Position Independent Executable as default])],
7567 enable_default_pie=$enableval,
7568 enable_default_pie=no)
7569 if test x$enable_default_pie = xyes ; then
7570 AC_DEFINE(ENABLE_DEFAULT_PIE, 1,
7571 [Define if your target supports default PIE and it is enabled.])
7573 AC_SUBST([enable_default_pie])
7575 # Check if -fno-PIE works.
7576 AC_CACHE_CHECK([for -fno-PIE option],
7578 [saved_CXXFLAGS="$CXXFLAGS"
7579 CXXFLAGS="$CXXFLAGS -fno-PIE"
7580 AC_COMPILE_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
7581 [gcc_cv_c_no_fpie=yes],
7582 [gcc_cv_c_no_fpie=no])
7583 CXXFLAGS="$saved_CXXFLAGS"])
7584 if test "$gcc_cv_c_no_fpie" = "yes"; then
7585 NO_PIE_CFLAGS="-fno-PIE"
7587 AC_SUBST([NO_PIE_CFLAGS])
7589 # Check if -no-pie works.
7590 AC_CACHE_CHECK([for -no-pie option],
7592 [saved_LDFLAGS="$LDFLAGS"
7593 LDFLAGS="$LDFLAGS -no-pie"
7594 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
7595 [gcc_cv_no_pie=yes],
7597 LDFLAGS="$saved_LDFLAGS"])
7598 if test "$gcc_cv_no_pie" = "yes"; then
7599 NO_PIE_FLAG="-no-pie"
7601 AC_SUBST([NO_PIE_FLAG])
7603 # Enable Intel CET on Intel CET enabled host if jit is enabled.
7604 GCC_CET_HOST_FLAGS(CET_HOST_FLAGS)
7605 case x$enable_languages in
7612 AC_SUBST(CET_HOST_FLAGS)
7614 # Check linker supports '-z bndplt'
7615 ld_bndplt_support=no
7616 AC_MSG_CHECKING(linker -z bndplt option)
7617 if test x"$ld_is_gold" = xno; then
7618 if test $in_tree_ld = yes ; then
7619 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
7620 ld_bndplt_support=yes
7622 elif test x$gcc_cv_ld != x; then
7623 # Check if linker supports -a bndplt option
7624 if $gcc_cv_ld --help 2>&1 | grep -- '-z bndplt' > /dev/null; then
7625 ld_bndplt_support=yes
7629 if test x"$ld_bndplt_support" = xyes; then
7630 AC_DEFINE(HAVE_LD_BNDPLT_SUPPORT, 1,
7631 [Define if your linker supports -z bndplt])
7633 AC_MSG_RESULT($ld_bndplt_support)
7635 # Check linker supports '--push-state'/'--pop-state'
7636 ld_pushpopstate_support=no
7637 AC_MSG_CHECKING(linker --push-state/--pop-state options)
7638 if test x"$ld_is_gold" = xno; then
7639 if test $in_tree_ld = yes ; then
7640 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
7641 ld_pushpopstate_support=yes
7643 elif test x$gcc_cv_ld != x; then
7644 # Check if linker supports --push-state/--pop-state options
7645 if $gcc_cv_ld --help 2>&1 | grep -- '--push-state' > /dev/null; then
7646 ld_pushpopstate_support=yes
7650 if test x"$ld_pushpopstate_support" = xyes; then
7651 AC_DEFINE(HAVE_LD_PUSHPOPSTATE_SUPPORT, 1,
7652 [Define if your linker supports --push-state/--pop-state])
7654 AC_MSG_RESULT($ld_pushpopstate_support)
7656 # On s390, float_t has historically been statically defined as double for no
7657 # good reason. To comply with the C standard in the light of this definition,
7658 # gcc has evaluated float expressions in double precision when in
7659 # standards-compatible mode or when given -fexcess-precision=standard. To enable
7660 # a smooth transition towards the new model used by most architectures, where
7661 # gcc describes its behavior via the macro __FLT_EVAL_METHOD__ and glibc derives
7662 # float_t from that, this behavior can be configured with
7663 # --enable-s390-excess-float-precision. When given as enabled, that flag selects
7664 # the old model. When omitted, native builds and cross compiles that have target
7665 # libc headers will detect whether libc clamps float_t to double and in that
7666 # case maintain the old model. Otherwise, they will default to the new model.
7667 AC_ARG_ENABLE(s390-excess-float-precision,
7668 [AS_HELP_STRING([--enable-s390-excess-float-precision],
7669 [on s390 targets, evaluate float with double precision
7670 when in standards-conforming mode])],
7671 [],[enable_s390_excess_float_precision=auto])
7675 if test x"$enable_s390_excess_float_precision" = xauto; then
7676 # Can we autodetect the behavior of the target libc?
7677 if test "$target" = "$host" -a "$host" = "$build"; then
7678 enable_s390_excess_float_precision=autodetect
7679 elif test "x$with_headers" != xno; then
7680 # cross build. are target headers available?
7681 # carefully coerce the build-system compiler to use target headers
7682 saved_CXXFLAGS="$CXXFLAGS"
7683 fixed_XGCC_FLAGS_FOR_TARGET=`echo "$XGCC_FLAGS_FOR_TARGET" | sed 's/-B/-idirafter/g'`
7684 CROSS_TEST_CXXFLAGS="-nostdinc $fixed_XGCC_FLAGS_FOR_TARGET"
7685 CXXFLAGS="$CROSS_TEST_CXXFLAGS"
7686 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
7688 ]])], [enable_s390_excess_float_precision=autodetect], [])
7689 CXXFLAGS="$saved_CXXFLAGS"
7692 if test x"$enable_s390_excess_float_precision" = xautodetect; then
7693 saved_CXXFLAGS="$CXXFLAGS"
7694 if ! test "$target" = "$host" -a "$host" = "$build"; then
7695 CXXFLAGS="$CROSS_TEST_CXXFLAGS"
7696 unset CROSS_TEST_CXXFLAGS
7698 AC_CACHE_CHECK([for glibc clamping float_t to double],
7699 gcc_cv_float_t_clamped_to_double, [
7700 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
7701 #define __FLT_EVAL_METHOD__ 0
7703 int dummy[sizeof(float_t) == sizeof(double) ? 1 : -1];
7705 [gcc_cv_float_t_clamped_to_double=yes],
7706 [gcc_cv_float_t_clamped_to_double=no])])
7707 CXXFLAGS="$saved_CXXFLAGS"
7708 enable_s390_excess_float_precision="$gcc_cv_float_t_clamped_to_double"
7710 # no way to detect behavior of target libc, default to new model
7711 enable_s390_excess_float_precision=no
7715 GCC_TARGET_TEMPLATE(ENABLE_S390_EXCESS_FLOAT_PRECISION)
7716 if test x"$enable_s390_excess_float_precision" = xyes; then
7717 AC_DEFINE(ENABLE_S390_EXCESS_FLOAT_PRECISION, 1,
7718 [Define to enable evaluating float expressions with double precision in
7719 standards-compatible mode on s390 targets.])
7724 # Configure the subdirectories
7725 # AC_CONFIG_SUBDIRS($subdirs)
7727 # Create the Makefile
7728 # and configure language subdirectories
7729 AC_CONFIG_FILES($all_outputs)
7731 AC_CONFIG_COMMANDS([default],
7733 case ${CONFIG_HEADERS} in
7734 *auto-host.h:config.in*)
7737 # Make sure all the subdirs exist.
7738 for d in $subdirs doc build common c-family
7740 test -d $d || mkdir $d
7743 [subdirs='$subdirs'])