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="$with_gnu_ld",
319 *darwin*) ld64_flag=yes;; # Darwin can only use a ld64-compatible linker.
323 # With pre-defined ld
325 [AS_HELP_STRING([--with-ld], [arrange to use the specified ld (full pathname)])],
326 DEFAULT_LINKER="$with_ld")
327 if test x"${DEFAULT_LINKER+set}" = x"set"; then
328 if test ! -x "$DEFAULT_LINKER"; then
329 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
330 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
332 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep ld64- > /dev/null; then
335 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
336 [Define to enable the use of a default linker.])
339 AC_MSG_CHECKING([whether a default linker was specified])
340 if test x"${DEFAULT_LINKER+set}" = x"set"; then
341 if test x"$gnu_ld_flag" = x"no"; then
342 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
344 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
350 # With demangler in GNU ld
351 AC_ARG_WITH(demangler-in-ld,
352 [AS_HELP_STRING([--with-demangler-in-ld], [try to use demangler in GNU ld])],
353 demangler_in_ld="$with_demangler_in_ld",
356 # ----------------------
357 # Find default assembler
358 # ----------------------
362 [AS_HELP_STRING([--with-gnu-as], [arrange to work with GNU as])],
363 gas_flag="$with_gnu_as",
367 [AS_HELP_STRING([--with-as], [arrange to use the specified as (full pathname)])],
368 DEFAULT_ASSEMBLER="$with_as")
369 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
370 if test ! -x "$DEFAULT_ASSEMBLER"; then
371 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
372 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
375 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
376 [Define to enable the use of a default assembler.])
379 AC_MSG_CHECKING([whether a default assembler was specified])
380 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
381 if test x"$gas_flag" = x"no"; then
382 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
384 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
394 # If a non-executable a.out is present (e.g. created by GNU as above even if
395 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
396 # file, even when creating an executable, so an execution test fails.
397 # Remove possible default executable files to avoid this.
399 # FIXME: This really belongs into AC_PROG_CC and can be removed once
400 # Autoconf includes it.
401 rm -f a.out a.exe b.out
403 # Find the native compiler
406 ACX_PROG_GNAT([-I"$srcdir"/ada/libgnat])
408 # Do configure tests with the C++ compiler, since that's what we build with.
411 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
412 # optimizations to be activated explicitly by the toplevel.
415 *) CFLAGS=`echo "$CFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" `
416 CXXFLAGS=`echo "$CXXFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" ` ;;
421 # Determine PICFLAG for target gnatlib.
422 GCC_PICFLAG_FOR_TARGET
423 AC_SUBST(PICFLAG_FOR_TARGET)
425 # -------------------------
426 # Check C compiler features
427 # -------------------------
429 AC_USE_SYSTEM_EXTENSIONS
436 # sizeof(char) is 1 by definition.
437 AC_CHECK_SIZEOF(void *)
438 AC_CHECK_SIZEOF(short)
440 AC_CHECK_SIZEOF(long)
441 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
443 if test x"$ac_cv_c_uint64_t" = x"no" -o x"$ac_cv_c_int64_t" = x"no"; then
444 AC_MSG_ERROR([uint64_t or int64_t not found])
447 # check what underlying integer type int64_t uses
448 AC_CACHE_CHECK(for int64_t underlying type, ac_cv_int64_t_type, [
449 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
453 template <typename T> struct X { };
455 struct X<long> { typedef long t; };
456 ]], [[X<int64_t>::t x;]])],[ac_cv_int64_t_type=long],[ac_cv_int64_t_type="long long"])])
457 if test "$ac_cv_int64_t_type" = "long"; then
458 AC_DEFINE(INT64_T_IS_LONG, 1,
459 [Define if int64_t uses long as underlying type.])
461 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
465 template <typename T> struct X { };
467 struct X<long long> { typedef long long t; };
468 ]], [[X<int64_t>::t x;]])],[],[AC_MSG_ERROR([error verifying int64_t uses long long])])
471 AC_CACHE_CHECK(for std::swap in <utility>, ac_cv_std_swap_in_utility, [
472 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
474 ]], [[int a, b; std::swap(a,b);]])],[ac_cv_std_swap_in_utility=yes],[ac_cv_std_swap_in_utility=no])])
475 if test $ac_cv_std_swap_in_utility = yes; then
476 AC_DEFINE(HAVE_SWAP_IN_UTILITY, 1,
477 [Define if <utility> defines std::swap.])
480 # Check whether compiler is affected by placement new aliasing bug (PR 29286).
481 # If the host compiler is affected by the bug, and we build with optimization
482 # enabled (which happens e.g. when cross-compiling), the pool allocator may
483 # get miscompiled. Use -fno-strict-aliasing to work around this problem.
484 # Since there is no reliable feature check for the presence of this bug,
485 # we simply use a GCC version number check. (This should never trigger for
486 # stages 2 or 3 of a native bootstrap.)
488 if test "$GCC" = yes; then
489 saved_CXXFLAGS="$CXXFLAGS"
491 # The following test compilation will succeed if and only if $CXX accepts
492 # -fno-strict-aliasing *and* is older than GCC 4.3.
493 CXXFLAGS="$CXXFLAGS -fno-strict-aliasing"
494 AC_MSG_CHECKING([whether $CXX is affected by placement new aliasing bug])
495 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
496 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)
497 #error compiler not affected by placement new aliasing bug
500 [AC_MSG_RESULT([yes]); aliasing_flags='-fno-strict-aliasing'],
501 [AC_MSG_RESULT([no])])
503 CXXFLAGS="$saved_CXXFLAGS"
505 AC_SUBST(aliasing_flags)
509 # ---------------------
510 # Warnings and checking
511 # ---------------------
513 # Check $CC warning features (if it's GCC).
514 # We want to use -pedantic, but we don't want warnings about
518 # * C++11 narrowing conversions in { }
519 # So, we only use -pedantic if we can disable those warnings.
521 # In stage 1, disable -Wformat warnings from old GCCs about new % codes
522 AC_ARG_ENABLE(build-format-warnings,
523 AS_HELP_STRING([--disable-build-format-warnings],[don't use -Wformat while building GCC]),
524 [],[enable_build_format_warnings=yes])
525 AS_IF([test $enable_build_format_warnings = no],
526 [wf_opt=-Wno-format],[wf_opt=])
527 ACX_PROG_CXX_WARNING_OPTS(
528 m4_quote(m4_do([-W -Wall -Wno-narrowing -Wwrite-strings ],
529 [-Wcast-qual -Wno-error=format-diag $wf_opt])),
531 ACX_PROG_CC_WARNING_OPTS(
532 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes ],
533 [-Wno-error=format-diag])), [c_loose_warn])
534 ACX_PROG_CXX_WARNING_OPTS(
535 m4_quote(m4_do([-Wmissing-format-attribute ],
536 [-Woverloaded-virtual])), [strict_warn])
537 ACX_PROG_CC_WARNING_OPTS(
538 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
539 ACX_PROG_CXX_WARNING_ALMOST_PEDANTIC(
540 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
541 [-Wno-overlength-strings])), [strict_warn])
542 ACX_PROG_CXX_WARNINGS_ARE_ERRORS([manual], [strict_warn])
544 # The above macros do nothing if the compiler is not GCC. However, the
545 # Makefile has more goo to add other flags, so these variables are used
546 # to enable warnings only for GCC.
549 if test "x$GCC" = "xyes"; then
550 warn_cflags='$(GCC_WARN_CFLAGS)'
551 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
553 AC_SUBST(warn_cflags)
554 AC_SUBST(warn_cxxflags)
556 # Disable exceptions and RTTI if building with g++
557 ACX_PROG_CC_WARNING_OPTS(
558 m4_quote(m4_do([-fno-exceptions -fno-rtti -fasynchronous-unwind-tables])),
561 # Enable expensive internal checks
563 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
567 AC_ARG_ENABLE(checking,
568 [AS_HELP_STRING([[--enable-checking[=LIST]]],
569 [enable expensive run-time checks. With LIST,
570 enable only specific categories of checks.
571 Categories are: yes,no,all,none,release.
572 Flags are: assert,df,extra,fold,gc,gcac,gimple,misc,
573 rtlflag,rtl,runtime,tree,valgrind,types])],
574 [ac_checking_flags="${enableval}"],[
575 # Determine the default checks.
576 if test x$is_release = x ; then
577 ac_checking_flags=yes,extra
579 ac_checking_flags=release
581 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
582 for check in release $ac_checking_flags
585 # these set all the flags to specific states
586 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
587 ac_fold_checking= ; ac_gc_checking=1 ; ac_extra_checking= ;
588 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
589 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
590 ac_tree_checking=1 ; ac_valgrind_checking= ;
591 ac_types_checking=1 ;;
592 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
593 ac_fold_checking= ; ac_gc_checking= ; ac_extra_checking= ;
594 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
595 ac_rtlflag_checking= ; ac_runtime_checking= ;
596 ac_tree_checking= ; ac_valgrind_checking= ;
597 ac_types_checking= ;;
598 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
599 ac_fold_checking=1 ; ac_gc_checking=1 ; ac_extra_checking=1 ;
600 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
601 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
602 ac_tree_checking=1 ; ac_valgrind_checking= ;
603 ac_types_checking=1 ;;
604 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
605 ac_fold_checking= ; ac_gc_checking= ; ac_extra_checking= ;
606 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
607 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
608 ac_tree_checking= ; ac_valgrind_checking= ;
609 ac_types_checking= ;;
610 # these enable particular checks
611 assert) ac_assert_checking=1 ;;
612 df) ac_df_checking=1 ;;
613 extra) ac_extra_checking=1 ;;
614 fold) ac_fold_checking=1 ;;
615 gc) ac_gc_checking=1 ;;
616 gcac) ac_gc_always_collect=1 ;;
617 gimple) ac_gimple_checking=1 ;;
618 misc) ac_checking=1 ;;
619 rtl) ac_rtl_checking=1 ;;
620 rtlflag) ac_rtlflag_checking=1 ;;
621 runtime) ac_runtime_checking=1 ;;
622 tree) ac_tree_checking=1 ;;
623 types) ac_types_checking=1 ;;
624 valgrind) ac_valgrind_checking=1 ;;
625 *) AC_MSG_ERROR(unknown check category $check) ;;
631 if test x$ac_checking != x ; then
632 AC_DEFINE(CHECKING_P, 1,
633 [Define to 0/1 if you want more run-time sanity checks. This one gets a grab
634 bag of miscellaneous but relatively cheap checks.])
635 nocommon_flag=-fno-common
637 AC_DEFINE(CHECKING_P, 0)
639 AC_SUBST(nocommon_flag)
640 if test x$ac_extra_checking != x ; then
641 AC_DEFINE(ENABLE_EXTRA_CHECKING, 1,
642 [Define to 0/1 if you want extra run-time checking that might affect code
645 AC_DEFINE(ENABLE_EXTRA_CHECKING, 0)
647 if test x$ac_df_checking != x ; then
648 AC_DEFINE(ENABLE_DF_CHECKING, 1,
649 [Define if you want more run-time sanity checks for dataflow.])
651 if test x$ac_assert_checking != x ; then
652 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
653 [Define if you want assertions enabled. This is a cheap check.])
655 if test x$ac_gimple_checking != x ; then
656 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
657 [Define if you want operations on GIMPLE (the basic data structure of
658 the high-level optimizers) to be checked for dynamic type safety at
659 runtime. This is moderately expensive.])
661 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
662 if test x$ac_runtime_checking != x ; then
663 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
664 [Define if you want runtime assertions enabled. This is a cheap check.])
666 if test x$ac_tree_checking != x ; then
667 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
668 [Define if you want all operations on trees (the basic data
669 structure of the front ends) to be checked for dynamic type safety
670 at runtime. This is moderately expensive.
674 if test x$ac_types_checking != x ; then
675 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
676 [Define if you want all gimple types to be verified after gimplifiation.
680 AC_SUBST(TREECHECKING)
681 if test x$ac_rtl_checking != x ; then
682 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
683 [Define if you want all operations on RTL (the basic data structure
684 of the optimizer and back end) to be checked for dynamic type safety
685 at runtime. This is quite expensive.])
687 if test x$ac_rtlflag_checking != x ; then
688 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
689 [Define if you want RTL flag accesses to be checked against the RTL
690 codes that are supported for each access macro. This is relatively
693 if test x$ac_gc_checking != x ; then
694 AC_DEFINE(ENABLE_GC_CHECKING, 1,
695 [Define if you want the garbage collector to do object poisoning and
696 other memory allocation checks. This is quite expensive.])
698 if test x$ac_gc_always_collect != x ; then
699 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
700 [Define if you want the garbage collector to operate in maximally
701 paranoid mode, validating the entire heap and collecting garbage at
702 every opportunity. This is extremely expensive.])
704 if test x$ac_fold_checking != x ; then
705 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
706 [Define if you want fold checked that it never destructs its argument.
707 This is quite expensive.])
709 valgrind_path_defines=
712 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
713 dnl # an if statement. This was the source of very frustrating bugs
714 dnl # in converting to autoconf 2.5x!
715 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
717 # It is certainly possible that there's valgrind but no valgrind.h.
718 # GCC relies on making annotations so we must have both.
719 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
720 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
721 [[#include <valgrind/memcheck.h>
722 #ifndef VALGRIND_DISCARD
723 #error VALGRIND_DISCARD not defined
725 [gcc_cv_header_valgrind_memcheck_h=yes],
726 [gcc_cv_header_valgrind_memcheck_h=no])
727 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
728 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
729 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
730 [[#include <memcheck.h>
731 #ifndef VALGRIND_DISCARD
732 #error VALGRIND_DISCARD not defined
734 [gcc_cv_header_memcheck_h=yes],
735 [gcc_cv_header_memcheck_h=no])
736 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
737 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
738 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
739 [Define if valgrind's valgrind/memcheck.h header is installed.])
741 if test $gcc_cv_header_memcheck_h = yes; then
742 AC_DEFINE(HAVE_MEMCHECK_H, 1,
743 [Define if valgrind's memcheck.h header is installed.])
746 if test x$ac_valgrind_checking != x ; then
747 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
748 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
749 if test "x$valgrind_path" = "x" \
750 || (test $have_valgrind_h = no \
751 && test $gcc_cv_header_memcheck_h = no \
752 && test $gcc_cv_header_valgrind_memcheck_h = no); then
753 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
755 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
756 valgrind_command="$valgrind_path -q"
757 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
758 [Define if you want to run subprograms and generated programs
759 through valgrind (a memory checker). This is extremely expensive.])
761 AC_SUBST(valgrind_path_defines)
762 AC_SUBST(valgrind_command)
764 # Enable code coverage collection
765 AC_ARG_ENABLE(coverage,
766 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
767 [enable compiler's code coverage collection.
768 Use to measure compiler performance and locate
769 unused parts of the compiler. With LEVEL, specify
770 optimization. Values are opt, noopt,
772 [case "${enableval}" in
774 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0 -fkeep-static-functions"
777 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2 -fkeep-static-functions"
780 # a.k.a. --disable-coverage
784 AC_MSG_ERROR(unknown coverage setting $enableval)
788 AC_SUBST(coverage_flags)
790 AC_ARG_ENABLE(gather-detailed-mem-stats,
791 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
792 [enable detailed memory allocation stats gathering])], [],
793 [enable_gather_detailed_mem_stats=no])
794 gather_stats=`if test $enable_gather_detailed_mem_stats != no; then echo 1; else echo 0; fi`
795 AC_DEFINE_UNQUOTED(GATHER_STATISTICS, $gather_stats,
796 [Define to enable detailed memory allocation stats gathering.])
798 AC_ARG_ENABLE(valgrind-annotations,
799 [AS_HELP_STRING([--enable-valgrind-annotations],
800 [enable valgrind runtime interaction])], [],
801 [enable_valgrind_annotations=no])
802 if test x$enable_valgrind_annotations != xno \
803 || test x$ac_valgrind_checking != x; then
804 if (test $have_valgrind_h = no \
805 && test $gcc_cv_header_memcheck_h = no \
806 && test $gcc_cv_header_valgrind_memcheck_h = no); then
807 AC_MSG_ERROR([*** Can't find valgrind/memcheck.h, memcheck.h or valgrind.h])
809 AC_DEFINE(ENABLE_VALGRIND_ANNOTATIONS, 1,
810 [Define to get calls to the valgrind runtime enabled.])
813 # -------------------------------
814 # Miscenalleous configure options
815 # -------------------------------
819 [AS_HELP_STRING([--with-stabs],
820 [arrange to use stabs instead of host debug format])],
824 # Determine whether or not multilibs are enabled.
825 AC_ARG_ENABLE(multilib,
826 [AS_HELP_STRING([--enable-multilib],
827 [enable library support for multiple ABIs])],
828 [], [enable_multilib=yes])
829 AC_SUBST(enable_multilib)
831 # Determine whether or not multiarch is enabled.
832 AC_ARG_ENABLE(multiarch,
833 [AS_HELP_STRING([--enable-multiarch],
834 [enable support for multiarch paths])],
835 [case "${enableval}" in
836 yes|no|auto) enable_multiarch=$enableval;;
837 *) AC_MSG_ERROR(bad value ${enableval} given for --enable-multiarch option) ;;
838 esac], [enable_multiarch=auto])
839 if test x${enable_multiarch} = xauto; then
840 if test x${with_native_system_header_dir} != x; then
841 ma_msg_suffix=", disabled auto check (configured with --native-system-header-dir)"
844 if test x$host != x$target && test "x$with_sysroot" = x; then
845 ma_msg_suffix=", disabled auto check (cross build configured without --with-sysroot)"
849 AC_MSG_CHECKING(for multiarch configuration)
850 AC_SUBST(enable_multiarch)
851 AC_MSG_RESULT($enable_multiarch$ma_msg_suffix)
853 # needed for setting the multiarch name for soft-float/hard-float ABIs
857 # default stack clash protection guard size as power of twos in bytes.
858 # Please keep these in sync with params.def.
862 # Keep the default value when the option is not used to 0, this allows us to
863 # distinguish between the cases where the user specifially set a value via
864 # configure and when the normal default value is used.
865 AC_ARG_WITH(stack-clash-protection-guard-size,
866 [AS_HELP_STRING([--with-stack-clash-protection-guard-size=size],
867 [Set the default stack clash protection guard size for specific targets as a power of two in bytes.])],
868 [DEFAULT_STK_CLASH_GUARD_SIZE="$with_stack_clash_protection_guard_size"], [DEFAULT_STK_CLASH_GUARD_SIZE=0])
869 if test $DEFAULT_STK_CLASH_GUARD_SIZE -ne 0 \
870 && (test $DEFAULT_STK_CLASH_GUARD_SIZE -lt $stk_clash_min \
871 || test $DEFAULT_STK_CLASH_GUARD_SIZE -gt $stk_clash_max); then
872 AC_MSG_ERROR(m4_normalize([
873 Invalid value $DEFAULT_STK_CLASH_GUARD_SIZE for --with-stack-clash-protection-guard-size. \
874 Must be between $stk_clash_min and $stk_clash_max.]))
877 AC_DEFINE_UNQUOTED(DEFAULT_STK_CLASH_GUARD_SIZE, $DEFAULT_STK_CLASH_GUARD_SIZE,
878 [Define to larger than zero set the default stack clash protector size.])
880 # Enable __cxa_atexit for C++.
881 AC_ARG_ENABLE(__cxa_atexit,
882 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
885 # Enable C extension for decimal float if target supports it.
886 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
888 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
889 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
890 [Define to 1 to enable decimal float extension to C.])
892 # Use default_decimal_float for dependency.
893 enable_decimal_float=$default_decimal_float
895 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
896 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
897 [Define to 1 to specify that we are using the BID decimal floating
898 point format instead of DPD])
900 # Enable C extension for fixed-point arithmetic.
901 AC_ARG_ENABLE(fixed-point,
902 [AS_HELP_STRING([--enable-fixed-point],
903 [enable fixed-point arithmetic extension to C])],
908 enable_fixed_point=yes
912 enable_fixed_point=yes
915 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
916 enable_fixed_point=no
920 AC_SUBST(enable_fixed_point)
922 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
923 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
924 [Define to 1 to enable fixed-point arithmetic extension to C.])
927 # Pass with no value to take the default
928 # Pass with a value to specify a thread package
929 AC_ARG_ENABLE(threads,
930 [AS_HELP_STRING([[--enable-threads[=LIB]]],
931 [enable thread usage for target GCC,
932 using LIB thread package])],,
936 [AS_HELP_STRING([--enable-tls],
937 [enable or disable generation of tls code
938 overriding the assembler check for tls support])],
942 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
943 Valid choices are 'yes' and 'no'.]) ;;
947 AC_ARG_ENABLE(vtable-verify,
948 [AS_HELP_STRING([--enable-vtable-verify],
949 [enable vtable verification feature])],,
950 [enable_vtable_verify=no])
951 vtable_verify=`if test x$enable_vtable_verify = xyes; then echo 1; else echo 0; fi`
952 AC_DEFINE_UNQUOTED(ENABLE_VTABLE_VERIFY, $vtable_verify,
953 [Define 0/1 if vtable verification feature is enabled.])
955 AC_ARG_ENABLE(analyzer,
956 [AS_HELP_STRING([--disable-analyzer],
957 [disable -fanalyzer static analyzer])],
958 if test x$enable_analyzer = xno; then
964 AC_DEFINE_UNQUOTED(ENABLE_ANALYZER, $analyzer,
965 [Define 0/1 if static analyzer feature is enabled.])
967 AC_ARG_ENABLE(objc-gc,
968 [AS_HELP_STRING([--enable-objc-gc],
969 [enable the use of Boehm's garbage collector with
970 the GNU Objective-C runtime])],
971 if test x$enable_objc_gc = xno; then
979 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
980 dwarf2="$with_dwarf2",
983 AC_ARG_ENABLE(shared,
984 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
986 case $enable_shared in
990 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
991 for pkg in $enableval; do
992 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
999 ], [enable_shared=yes])
1000 AC_SUBST(enable_shared)
1003 [ --disable-gcov don't provide libgcov and related host tools],
1004 [], [enable_gcov=yes])
1005 AC_SUBST(enable_gcov)
1008 [AS_HELP_STRING([--with-specs=SPECS],
1009 [add SPECS to driver command-line processing])],
1010 [CONFIGURE_SPECS=$withval],
1013 AC_SUBST(CONFIGURE_SPECS)
1015 ACX_PKGVERSION([GCC])
1016 ACX_BUGURL([https://gcc.gnu.org/bugs/])
1018 # Allow overriding the default URL for documentation
1019 AC_ARG_WITH(documentation-root-url,
1020 AS_HELP_STRING([--with-documentation-root-url=URL],
1021 [Root for documentation URLs]),
1023 yes) AC_MSG_ERROR([documentation root URL not specified]) ;;
1024 no) AC_MSG_ERROR([documentation root URL not specified]) ;;
1025 */) DOCUMENTATION_ROOT_URL="$withval" ;;
1026 *) AC_MSG_ERROR([documentation root URL does not end with /]) ;;
1028 DOCUMENTATION_ROOT_URL="https://gcc.gnu.org/onlinedocs/"
1030 AC_DEFINE_UNQUOTED(DOCUMENTATION_ROOT_URL,"$DOCUMENTATION_ROOT_URL",
1031 [Define to the root for documentation URLs.])
1033 # Allow overriding the default URL for GCC changes
1034 AC_ARG_WITH(changes-root-url,
1035 AS_HELP_STRING([--with-changes-root-url=URL],
1036 [Root for GCC changes URLs]),
1038 yes) AC_MSG_ERROR([changes root URL not specified]) ;;
1039 no) AC_MSG_ERROR([changes root URL not specified]) ;;
1040 */) CHANGES_ROOT_URL="$withval" ;;
1041 *) AC_MSG_ERROR([changes root URL does not end with /]) ;;
1043 CHANGES_ROOT_URL="https://gcc.gnu.org/"
1045 AC_DEFINE_UNQUOTED(CHANGES_ROOT_URL,"$CHANGES_ROOT_URL",
1046 [Define to the root for URLs about GCC changes.])
1048 # Sanity check enable_languages in case someone does not run the toplevel
1049 # configure # script.
1050 AC_ARG_ENABLE(languages,
1051 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
1052 [case ,${enable_languages}, in
1054 # go safe -- we cannot be much sure without the toplevel
1056 # analysis of which target libs are present and usable
1060 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
1065 enable_languages=c,${enable_languages}
1068 [enable_languages=c])
1070 # If top-level libada has been disabled, then wire in install-gnatlib
1071 # invocation with `make install', so that one can build and install
1072 # the library manually with `make -C gcc all gnatlib gnattools install'.
1073 if test x"$enable_libada" = xno; then
1074 gnat_install_lib=gnat-install-lib
1078 AC_SUBST(gnat_install_lib)
1080 if test x"$enable_as_accelerator_for" != x; then
1081 AC_DEFINE(ACCEL_COMPILER, 1,
1082 [Define if this compiler should be built as the offload target compiler.])
1083 enable_as_accelerator=yes
1086 # In this case we expect offload compiler to be built as native, so we
1087 # need to rename the driver to avoid clashes with host's drivers.
1088 program_transform_name="s&^&${target}-&" ;;
1090 sedscript="s#${target_noncanonical}#${enable_as_accelerator_for}-accel-${target_noncanonical}#"
1091 program_transform_name=`echo $program_transform_name | sed $sedscript`
1092 accel_dir_suffix=/accel/${target_noncanonical}
1093 real_target_noncanonical=${enable_as_accelerator_for}
1095 AC_SUBST(enable_as_accelerator)
1096 AC_SUBST(real_target_noncanonical)
1097 AC_SUBST(accel_dir_suffix)
1099 for tgt in `echo $enable_offload_targets | sed 's/,/ /g'`; do
1100 tgt=`echo $tgt | sed 's/=.*//'`
1104 *-intelmic-* | *-intelmicemul-*)
1105 omp_device_property=omp-device-properties-i386
1106 omp_device_property_tmake_file="${omp_device_property_tmake_file} \$(srcdir)/config/i386/t-omp-device"
1109 omp_device_property=omp-device-properties-gcn
1110 omp_device_property_tmake_file="${omp_device_property_tmake_file} \$(srcdir)/config/gcn/t-omp-device"
1113 omp_device_property=omp-device-properties-nvptx
1114 omp_device_property_tmake_file="${omp_device_property_tmake_file} \$(srcdir)/config/nvptx/t-omp-device"
1117 AC_MSG_ERROR([unknown offload target specified])
1120 omp_device_properties="${omp_device_properties} ${tgt}=${omp_device_property}"
1121 omp_device_property_deps="${omp_device_property_deps} ${omp_device_property}"
1123 if test x"$offload_targets" = x; then
1124 offload_targets=$tgt
1126 offload_targets="$offload_targets,$tgt"
1129 AC_SUBST(omp_device_properties)
1130 AC_SUBST(omp_device_property_deps)
1132 AC_DEFINE_UNQUOTED(OFFLOAD_TARGETS, "$offload_targets",
1133 [Define to offload targets, separated by commas.])
1134 if test x"$enable_offloading" != x; then
1135 AC_DEFINE(ENABLE_OFFLOADING, 1,
1136 [Define this to enable support for offloading.])
1138 AC_DEFINE(ENABLE_OFFLOADING, 0,
1139 [Define this to enable support for offloading.])
1142 if test "x$enable_offload_defaulted" = xyes; then
1143 AC_DEFINE(OFFLOAD_DEFAULTED, 1,
1144 [Define to 1 to if -foffload is defaulted])
1147 AC_ARG_WITH(multilib-list,
1148 [AS_HELP_STRING([--with-multilib-list], [select multilibs (AArch64, SH and x86-64 only)])],
1150 with_multilib_list=default)
1152 AC_ARG_WITH(multilib-generator,
1153 [AS_HELP_STRING([--with-multilib-generator], [Multi-libs configuration string (RISC-V only)])],
1155 with_multilib_generator=default)
1157 # -------------------------
1158 # Checks for other programs
1159 # -------------------------
1163 # Find some useful tools
1165 # We need awk to create options.c and options.h.
1166 # Bail out if it's missing.
1168 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
1175 AC_SUBST(ranlib_flags)
1179 # See if cmp has --ignore-initial.
1180 gcc_AC_PROG_CMP_IGNORE_INITIAL
1182 # See if we have the mktemp command.
1183 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
1185 # See if makeinfo has been installed and is modern enough
1186 # that we can use it.
1187 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
1188 [GNU texinfo.* \([0-9][0-9.]*\)],
1189 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
1190 if test $gcc_cv_prog_makeinfo_modern = no; then
1192 *** Makeinfo is missing or too old.
1193 *** Info documentation will not be built.])
1198 AC_SUBST(BUILD_INFO)
1200 # Is pod2man recent enough to regenerate manpages?
1201 AC_MSG_CHECKING([for recent Pod::Man])
1202 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
1204 GENERATED_MANPAGES=generated-manpages
1209 AC_SUBST(GENERATED_MANPAGES)
1211 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
1214 dnl Don't use AC_PROG_LEX; we insist on flex.
1215 dnl LEXLIB is not useful in gcc.
1216 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
1219 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
1221 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
1222 # check for build == host before using them.
1225 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
1226 && test -d ../binutils ; then
1227 NM='${objdir}/../binutils/nm-new'
1229 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
1233 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
1234 && test -d ../binutils ; then
1235 AR='${objdir}/../binutils/ar'
1237 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
1240 # The jit documentation looks better if built with sphinx, but can be
1241 # built with texinfo if sphinx is not available.
1242 # Set "doc_build_sys" to "sphinx" or "texinfo" accordingly.
1243 AC_CHECK_PROG(doc_build_sys, sphinx-build, sphinx, texinfo)
1245 # --------------------
1246 # Checks for C headers
1247 # --------------------
1249 # Need to reject headers which give warnings, so that the -Werror bootstrap
1250 # works later. *sigh* This needs to come before all header checks.
1257 AC_HEADER_TIOCGWINSZ
1258 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
1259 fcntl.h ftw.h unistd.h sys/file.h sys/time.h sys/mman.h \
1260 sys/resource.h sys/param.h sys/times.h sys/stat.h sys/locking.h \
1261 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
1263 # Check for thread headers.
1264 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
1265 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
1267 # These tests can't be done till we know if we have limits.h.
1271 # ----------------------
1272 # Checks for C++ headers
1273 # ----------------------
1275 dnl Autoconf will give an error in the configure script if there is no
1276 dnl C++ preprocessor. Hack to prevent that.
1277 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
1279 m4_popdef([AC_MSG_ERROR])[]dnl
1281 AC_CHECK_HEADERS(unordered_map)
1282 AC_CHECK_HEADERS(tr1/unordered_map)
1283 AC_CHECK_HEADERS(ext/hash_map)
1286 # Dependency checking.
1290 AC_CONFIG_COMMANDS([gccdepdir],[
1291 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR
1292 for lang in $subdirs c-family common analyzer rtl-ssa
1294 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs $lang/$DEPDIR
1295 done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR])
1297 ZW_PROG_COMPILER_DEPENDENCIES([CXX])
1304 # These libraries may be used by collect2.
1305 # We may need a special search path to get them linked.
1306 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
1308 for libs in '' -lld -lmld \
1309 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
1310 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1313 AC_TRY_LINK_FUNC(ldopen,
1314 [gcc_cv_collect2_libs="$libs"; break])
1317 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1318 case $gcc_cv_collect2_libs in
1320 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1322 AC_SUBST(COLLECT2_LIBS)
1324 # When building Ada code on Alpha, we need exc_resume which is usually in
1325 # -lexc. So test for it.
1328 AC_SEARCH_LIBS(exc_resume, exc)
1331 AC_SUBST(GNAT_LIBEXC)
1333 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1336 AC_SEARCH_LIBS(kstat_open, kstat)
1337 EXTRA_GCC_LIBS="$LIBS"
1339 AC_SUBST(EXTRA_GCC_LIBS)
1341 # Solaris needs libsocket and libnsl for socket functions before 11.4.
1342 # C++ needs those for libcody.
1350 # Some systems put ldexp and frexp in libm instead of libc; assume
1351 # they're both in the same place. jcf-dump needs them.
1354 AC_SEARCH_LIBS(ldexp, m)
1359 # Some systems need dlopen
1362 AC_SEARCH_LIBS(dlopen, dl)
1367 # Use <inttypes.h> only if it exists,
1368 # doesn't clash with <sys/types.h>, declares intmax_t and defines
1370 AC_MSG_CHECKING(for inttypes.h)
1371 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1372 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1373 [[#define __STDC_FORMAT_MACROS
1374 #include <sys/types.h>
1375 #include <inttypes.h>]],
1380 [gcc_cv_header_inttypes_h=yes],
1381 [gcc_cv_header_inttypes_h=no])])
1382 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1383 if test $gcc_cv_header_inttypes_h = yes; then
1384 AC_DEFINE(HAVE_INTTYPES_H, 1,
1385 [Define if you have a working <inttypes.h> header file.])
1388 # Look for the ZSTD package.
1391 AC_SUBST(ZSTD_INCLUDE)
1395 AC_SUBST(ZSTD_CPPFLAGS)
1396 AC_SUBST(ZSTD_LDFLAGS)
1398 [AS_HELP_STRING([--with-zstd=PATH],
1399 [specify prefix directory for installed zstd library.
1400 Equivalent to --with-zstd-include=PATH/include
1401 plus --with-zstd-lib=PATH/lib])])
1402 AC_ARG_WITH(zstd-include,
1403 [AS_HELP_STRING([--with-zstd-include=PATH],
1404 [specify directory for installed zstd include files])])
1405 AC_ARG_WITH(zstd-lib,
1406 [AS_HELP_STRING([--with-zstd-lib=PATH],
1407 [specify directory for the installed zstd library])])
1408 case "x$with_zstd" in
1414 *) ZSTD_INCLUDE=$with_zstd/include
1415 ZSTD_LIB=$with_zstd/lib
1419 if test "x$with_zstd" != xno; then
1420 if test "x$with_zstd_include" != x; then
1421 ZSTD_INCLUDE=$with_zstd_include
1423 if test "x$with_zstd_lib" != x; then
1424 ZSTD_LIB=$with_zstd_lib
1426 if test "x$ZSTD_INCLUDE" != x \
1427 && test "x$ZSTD_INCLUDE" != xno; then
1428 ZSTD_CPPFLAGS=-I$ZSTD_INCLUDE
1430 if test "x$ZSTD_LIB" != x \
1431 && test "x$ZSTD_LIB" != xno; then
1432 ZSTD_LDFLAGS=-L$ZSTD_LIB
1435 CXXFLAGS="$CXXFLAGS $ZSTD_CPPFLAGS"
1436 LDFLAGS="$LDFLAGS $ZSTD_LDFLAGS"
1438 AC_MSG_CHECKING(for zstd.h)
1439 AC_CACHE_VAL(gcc_cv_header_zstd_h,
1440 # We require version 1.3.0 or later. This is the first version that has
1441 # ZSTD_getFrameContentSize.
1442 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1444 #if ZSTD_VERSION_NUMBER < 10300
1445 #error "need zstd 1.3.0 or better"
1447 [gcc_cv_header_zstd_h=yes],
1448 [gcc_cv_header_zstd_h=no])])
1449 AC_MSG_RESULT($gcc_cv_header_zstd_h)
1450 if test $gcc_cv_header_zstd_h = yes; then
1451 AC_DEFINE(HAVE_ZSTD_H, 1,
1452 [Define if you have a working <zstd.h> header file.])
1453 elif test "x$with_zstd" != x; then
1454 as_fn_error $? "Unable to find zstd.h. See config.log for details." "$LINENO" 5
1457 # LTO can use zstd compression algorithm
1460 AC_SEARCH_LIBS(ZSTD_compress, zstd)
1466 dnl Disabled until we have a complete test for buggy enum bitfields.
1467 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1469 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1470 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1471 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1472 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1473 putchar_unlocked putc_unlocked)
1474 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoq \
1475 popen sysconf strsignal getrusage nl_langinfo \
1476 gettimeofday mbstowcs wcswidth mmap posix_fallocate setlocale \
1477 gcc_UNLOCKED_FUNCS madvise mallinfo mallinfo2 fstatat)
1479 if test x$ac_cv_func_mbstowcs = xyes; then
1480 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1481 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1487 [gcc_cv_func_mbstowcs_works=yes],
1488 [gcc_cv_func_mbstowcs_works=no],
1489 [gcc_cv_func_mbstowcs_works=yes])])
1490 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1491 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1492 [Define this macro if mbstowcs does not crash when its
1493 first argument is NULL.])
1497 AC_CHECK_TYPE(ssize_t, int)
1498 AC_CHECK_TYPE(caddr_t, char *)
1499 AC_CHECK_TYPE(sighander_t,
1500 AC_DEFINE(HAVE_SIGHANDLER_T, 1,
1501 [Define if <sys/signal.h> defines sighandler_t]),
1504 GCC_AC_FUNC_MMAP_BLACKLIST
1508 # Under VMS, vfork works very differently than on Unix. The standard test
1509 # won't work, and it isn't easily adaptable. It makes more sense to
1511 ac_cv_func_vfork_works=yes
1518 # Until we have in-tree GNU iconv:
1520 if test -f "$LTLIBICONV"; then
1521 LIBICONV_DEP=$LTLIBICONV
1523 AC_SUBST(LIBICONV_DEP)
1529 # We will need to find libiberty.h and ansidecl.h
1530 saved_CFLAGS="$CFLAGS"
1531 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1532 saved_CXXFLAGS="$CXXFLAGS"
1533 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1535 # gcc_AC_CHECK_DECLS doesn't support overloaded functions, so use the
1536 # normal autoconf function for these. But force definition of
1537 # HAVE_DECL_BASENAME like gcc_AC_CHECK_DECLS does, to suppress the bizarre
1538 # basename handling in libiberty.h.
1539 AC_CHECK_DECLS([basename(const char*), strstr(const char*,const char*)], , ,[
1540 #undef HAVE_DECL_BASENAME
1541 #define HAVE_DECL_BASENAME 1
1542 #include "ansidecl.h"
1543 #include "system.h"])
1545 gcc_AC_CHECK_DECLS(getenv atol atoll asprintf sbrk abort atof getcwd getwd \
1546 madvise stpcpy strnlen strsignal strverscmp \
1547 strtol strtoul strtoll strtoull setenv unsetenv \
1548 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1549 free getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1550 #include "ansidecl.h"
1551 #include "system.h"])
1553 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1554 #include "ansidecl.h"
1556 #ifdef HAVE_SYS_RESOURCE_H
1557 #include <sys/resource.h>
1561 gcc_AC_CHECK_DECLS(mallinfo mallinfo2, , ,[
1562 #include "ansidecl.h"
1564 #ifdef HAVE_MALLOC_H
1569 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1570 #include "ansidecl.h"
1572 #ifdef HAVE_SYS_RESOURCE_H
1573 #include <sys/resource.h>
1575 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1576 [Define to `long' if <sys/resource.h> doesn't define.])])
1578 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1579 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1580 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1581 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1582 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1583 #include "ansidecl.h"
1592 gcc_AC_CHECK_DECLS(times, , ,[
1593 #include "ansidecl.h"
1595 #ifdef HAVE_SYS_TIMES_H
1596 #include <sys/times.h>
1600 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1601 #include "ansidecl.h"
1606 # More time-related stuff.
1607 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1608 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1609 #include "ansidecl.h"
1611 #ifdef HAVE_SYS_TIMES_H
1612 #include <sys/times.h>
1614 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1615 if test $ac_cv_struct_tms = yes; then
1616 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1617 [Define if <sys/times.h> defines struct tms.])
1620 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1621 # revisit after autoconf 2.50.
1622 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1623 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1624 #include "ansidecl.h"
1626 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1627 if test $gcc_cv_type_clock_t = yes; then
1628 AC_DEFINE(HAVE_CLOCK_T, 1,
1629 [Define if <time.h> defines clock_t.])
1632 # Check if F_SETLKW is supported by fcntl.
1633 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1634 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1635 #include <fcntl.h>]], [[
1641 return fcntl (1, F_SETLKW, &fl);]])],
1642 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1643 if test $ac_cv_f_setlkw = yes; then
1644 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1645 [Define if F_SETLKW supported by fcntl.])
1648 # Check if O_CLOEXEC is defined by fcntl
1649 AC_CACHE_CHECK(for O_CLOEXEC, ac_cv_o_cloexec, [
1650 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1651 #include <fcntl.h>]], [[
1652 return open ("/dev/null", O_RDONLY | O_CLOEXEC);]])],
1653 [ac_cv_o_cloexec=yes],[ac_cv_o_cloexec=no])])
1654 if test $ac_cv_o_cloexec = yes; then
1655 AC_DEFINE(HOST_HAS_O_CLOEXEC, 1,
1656 [Define if O_CLOEXEC supported by fcntl.])
1659 # C++ Modules would like some networking features to provide the mapping
1660 # server. You can still use modules without them though.
1661 # The following network-related checks could probably do with some
1662 # Windows and other non-linux defenses and checking.
1664 # Local socket connectivity wants AF_UNIX networking
1665 # Check for AF_UNIX networking
1666 AC_CACHE_CHECK(for AF_UNIX, ac_cv_af_unix, [
1667 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1668 #include <sys/types.h>
1669 #include <sys/socket.h>
1671 #include <netinet/in.h>]],[[
1673 un.sun_family = AF_UNSPEC;
1674 int fd = socket (AF_UNIX, SOCK_STREAM, 0);
1675 connect (fd, (sockaddr *)&un, sizeof (un));]])],
1676 [ac_cv_af_unix=yes],
1677 [ac_cv_af_unix=no])])
1678 if test $ac_cv_af_unix = yes; then
1679 AC_DEFINE(HAVE_AF_UNIX, 1,
1680 [Define if AF_UNIX supported.])
1683 # Remote socket connectivity wants AF_INET6 networking
1684 # Check for AF_INET6 networking
1685 AC_CACHE_CHECK(for AF_INET6, ac_cv_af_inet6, [
1686 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1687 #include <sys/types.h>
1688 #include <sys/socket.h>
1689 #include <netinet/in.h>
1690 #include <netdb.h>]],[[
1692 in6.sin6_family = AF_UNSPEC;
1693 struct addrinfo *addrs = 0;
1694 struct addrinfo hints;
1696 hints.ai_family = AF_INET6;
1697 hints.ai_socktype = SOCK_STREAM;
1698 hints.ai_protocol = 0;
1699 hints.ai_canonname = 0;
1702 int e = getaddrinfo ("localhost", 0, &hints, &addrs);
1703 const char *str = gai_strerror (e);
1704 freeaddrinfo (addrs);
1705 int fd = socket (AF_INET6, SOCK_STREAM, 0);
1706 connect (fd, (sockaddr *)&in6, sizeof (in6));]])],
1707 [ac_cv_af_inet6=yes],
1708 [ac_cv_af_inet6=no])])
1709 if test $ac_cv_af_inet6 = yes; then
1710 AC_DEFINE(HAVE_AF_INET6, 1,
1711 [Define if AF_INET6 supported.])
1714 # Check if _LK_LOCK is supported by _locking
1715 AC_CACHE_CHECK(for _LK_LOCK, ac_cv_lk_lock, [
1716 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1718 #include <sys/locking.h>]], [[
1720 return _locking (fd, _LK_LOCK, 0);]])],
1721 [ac_cv_lk_lock=yes],[ac_cv_lk_lock=no])])
1722 if test $ac_cv_lk_lock = yes; then
1723 AC_DEFINE(HOST_HAS_LK_LOCK, 1,
1724 [Define if _LK_LOC supported by _locking.])
1727 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1728 CFLAGS="$saved_CFLAGS"
1729 CXXFLAGS="$saved_CXXFLAGS"
1731 # mkdir takes a single argument on some systems.
1732 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1740 # With Setjmp/Longjmp based exception handling.
1741 AC_ARG_ENABLE(sjlj-exceptions,
1742 [AS_HELP_STRING([--enable-sjlj-exceptions],
1743 [arrange to use setjmp/longjmp exception handling])],
1746 if test $enableval != yes; then
1747 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1752 force_sjlj_exceptions=yes],
1755 force_sjlj_exceptions=yes
1759 force_sjlj_exceptions=yes
1763 force_sjlj_exceptions=no
1766 if test $force_sjlj_exceptions = yes; then
1767 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1768 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1769 [Define 0/1 to force the choice for exception handling model.])
1772 # --------------------------------------------------------
1773 # Build, host, and target specific configuration fragments
1774 # --------------------------------------------------------
1776 # Collect build-machine-specific information.
1777 . ${srcdir}/config.build || exit 1
1779 # Collect host-machine-specific information.
1780 . ${srcdir}/config.host || exit 1
1784 # Collect target-machine-specific information.
1785 . ${srcdir}/config.gcc || exit 1
1787 extra_objs="${host_extra_objs} ${extra_objs}"
1788 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1790 # Default the target-machine variables that were not explicitly set.
1791 if test x"$tm_file" = x
1792 then tm_file=$cpu_type/$cpu_type.h; fi
1794 if test x"$extra_headers" = x
1795 then extra_headers=; fi
1797 if test x$md_file = x
1798 then md_file=$cpu_type/$cpu_type.md; fi
1800 if test x$out_file = x
1801 then out_file=$cpu_type/$cpu_type.c; fi
1803 if test x"$tmake_file" = x
1804 then tmake_file=$cpu_type/t-$cpu_type
1807 # Support --enable-initfini-array.
1808 if test x$enable_initfini_array != xno; then
1809 tm_file="${tm_file} initfini-array.h"
1812 if test x"$dwarf2" = xyes
1813 then tm_file="$tm_file tm-dwarf2.h"
1816 # Say what files are being used for the output code and MD file.
1817 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1818 echo "Using \`$srcdir/config/$md_file' as machine description file."
1820 # If any of the xm_file variables contain nonexistent files, warn
1821 # about them and drop them.
1824 for x in $build_xm_file; do
1825 if test -f $srcdir/config/$x
1827 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1833 for x in $host_xm_file; do
1834 if test -f $srcdir/config/$x
1836 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1842 for x in $xm_file; do
1843 if test -f $srcdir/config/$x
1845 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1851 for f in $tm_file; do
1854 if test $count = ax; then
1855 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1857 echo "Using the following target machine macro files:"
1858 for f in $tm_file; do
1859 echo " $srcdir/config/$f"
1863 if test x$use_long_long_for_widest_fast_int = xyes; then
1864 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1865 [Define to 1 if the 'long long' type is wider than 'long' but still
1866 efficiently supported by the host hardware.])
1869 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1870 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1872 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1873 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1876 for f in $host_xm_file; do
1879 if test $count = a; then
1881 elif test $count = ax; then
1882 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1884 echo "Using the following host machine macro files:"
1885 for f in $host_xm_file; do
1886 echo " $srcdir/config/$f"
1889 echo "Using ${out_host_hook_obj} for host machine hooks."
1891 if test "$host_xm_file" != "$build_xm_file"; then
1893 for f in $build_xm_file; do
1896 if test $count = a; then
1898 elif test $count = ax; then
1899 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1901 echo "Using the following build machine macro files:"
1902 for f in $build_xm_file; do
1903 echo " $srcdir/config/$f"
1908 if test -n "$configured_native_system_header_dir"; then
1909 native_system_header_dir=$configured_native_system_header_dir
1911 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1912 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1916 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1917 gcc_cv_mcontext_underscores,
1918 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
1919 #include <sys/cdefs.h>
1920 #include <sys/signal.h>
1921 #include <ucontext.h>
1922 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1924 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1925 if test $gcc_cv_mcontext_underscores = yes; then
1926 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1927 [mcontext_t fields start with __])
1936 # Check if a valid thread package
1937 case ${enable_threads} in
1940 target_thread_file='single'
1944 target_thread_file='single'
1946 aix | dce | lynx | mipssde | posix | rtems | \
1947 single | tpf | vxworks | win32)
1948 target_thread_file=${enable_threads}
1951 echo "${enable_threads} is an unknown thread package" 1>&2
1956 if test x${thread_file} = x; then
1957 # No thread file set by target-specific clauses in config.gcc,
1958 # so use file chosen by default logic above
1959 thread_file=${target_thread_file}
1967 if test x$enable___cxa_atexit = xyes || \
1968 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1969 if test x$host = x$target; then
1971 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1972 # keyed to flag_use_cxa_atexit
1980 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1981 [echo "__cxa_atexit can't be enabled on this target"])
1985 # We can't check for __cxa_atexit when building a cross, so assume
1989 if test x$use_cxa_atexit = xyes; then
1990 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1991 [Define if you want to use __cxa_atexit, rather than atexit, to
1992 register C++ destructors for local statics and global objects.
1993 This is essential for fully standards-compliant handling of
1994 destructors, but requires __cxa_atexit in libc.])
1998 # Look for a file containing extra machine modes.
1999 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
2000 extra_modes_file='$(srcdir)'/config/${extra_modes}
2001 AC_SUBST(extra_modes_file)
2002 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
2003 [Define to the name of a file containing a list of extra machine modes
2004 for this architecture.])
2007 # Convert extra_options into a form suitable for Makefile use.
2010 for f in $extra_options; do
2011 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
2012 all_opt_files="$all_opt_files $srcdir/config/$f"
2014 AC_SUBST(extra_opt_files)
2016 # auto-host.h is the file containing items generated by autoconf and is
2017 # the first file included by config.h.
2018 # If host=build, it is correct to have bconfig include auto-host.h
2019 # as well. If host!=build, we are in error and need to do more
2020 # work to find out the build config parameters.
2021 if test x$host = x$build
2023 build_auto=auto-host.h
2024 HAVE_AUTO_BUILD='# '
2026 # We create a subdir, then run autoconf in the subdir.
2027 # To prevent recursion we set host and build for the new
2028 # invocation of configure to the build for this invocation
2035 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
2036 *) realsrcdir=../${srcdir};;
2038 # Clearing GMPINC is necessary to prevent host headers being
2039 # used by the build compiler. Defining GENERATOR_FILE stops
2040 # system.h from including gmp.h.
2041 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
2042 CXX="${CXX_FOR_BUILD}" CXXFLAGS="${CXXFLAGS_FOR_BUILD}" \
2043 LD="${LD_FOR_BUILD}" LDFLAGS="${LDFLAGS_FOR_BUILD}" \
2044 GMPINC="" CPPFLAGS="${CPPFLAGS} -DGENERATOR_FILE" \
2045 ${realsrcdir}/configure \
2046 --enable-languages=${enable_languages-all} \
2047 ${enable_obsolete+--enable-obsolete="$enable_obsolete"} \
2048 ${enable_option_checking+--enable-option-checking="$enable_option_checking"} \
2049 --target=$target_alias --host=$build_alias \
2050 --build=$build_alias || exit # retaining $tempdir
2052 # We just finished tests for the build machine, so rename
2053 # the file auto-build.h in the gcc directory.
2054 mv auto-host.h ../auto-build.h
2057 build_auto=auto-build.h
2060 AC_SUBST(build_subdir)
2061 AC_SUBST(HAVE_AUTO_BUILD)
2063 tm_file="${tm_file} defaults.h"
2064 tm_p_file="${tm_p_file} tm-preds.h"
2065 tm_d_file="${tm_d_file} defaults.h"
2066 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
2067 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
2068 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
2069 # put this back in temporarily.
2070 xm_file="auto-host.h ansidecl.h ${xm_file}"
2077 # Compile in configure arguments.
2078 if test -f configargs.h ; then
2079 # Being re-configured.
2080 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
2081 gcc_reconf_arguments=`echo "$gcc_config_arguments" | sed -e 's/^.*\( : (reconfigured) .*$\)/\1/'`
2082 if [ "$gcc_reconf_arguments" != " : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS" ]; then
2083 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
2086 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
2089 # Double all backslashes and backslash all quotes to turn
2090 # gcc_config_arguments into a C string.
2091 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
2092 $gcc_config_arguments
2094 gcc_config_arguments_str=`cat conftest.out`
2097 cat > configargs.h <<EOF
2098 /* Generated automatically. */
2099 static const char configuration_arguments[] = "$gcc_config_arguments_str";
2100 static const char thread_model[] = "$thread_file";
2102 static const struct {
2103 const char *name, *value;
2104 } configure_default_options[] = $configure_default_options;
2109 gcc_BASEVER=`cat $srcdir/BASE-VER`
2110 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
2111 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
2112 if test -f $srcdir/REVISION ; then
2113 gcc_REVISION=`cat $srcdir/REVISION`
2117 cat > plugin-version.h <<EOF
2118 #include "configargs.h"
2120 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
2121 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
2122 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
2123 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
2125 static char basever[] = "$gcc_BASEVER";
2126 static char datestamp[] = "$gcc_DATESTAMP";
2127 static char devphase[] = "$gcc_DEVPHASE";
2128 static char revision[] = "$gcc_REVISION";
2130 /* FIXME plugins: We should make the version information more precise.
2131 One way to do is to add a checksum. */
2133 static struct plugin_gcc_version gcc_version = {basever, datestamp,
2135 configuration_arguments};
2139 # Determine what GCC version number to use in filesystem paths.
2142 # Internationalization
2143 ZW_GNU_GETTEXT_SISTER_DIR
2145 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
2146 # -liconv on the link line twice.
2147 case "$LIBINTL" in *$LIBICONV*)
2151 AC_ARG_ENABLE(secureplt,
2152 [AS_HELP_STRING([--enable-secureplt],
2153 [enable -msecure-plt by default for PowerPC])],
2156 AC_ARG_ENABLE(mingw-wildcard,
2157 [AS_HELP_STRING([--enable-mingw-wildcard],
2158 [Set whether to expand wildcard on command-line.
2159 Default to platform configuration])],
2160 [],[enable_mingw_wildcard=platform])
2161 AS_IF([test x"$enable_mingw_wildcard" != xplatform ],
2162 [AC_DEFINE_UNQUOTED(MINGW_DOWILDCARD,
2163 $(test x"$enable_mingw_wildcard" = xno; echo $?),
2164 [Value to set mingw's _dowildcard to.])])
2166 AC_ARG_ENABLE(large-address-aware,
2167 [AS_HELP_STRING([--enable-large-address-aware],
2168 [Link mingw executables with --large-address-aware])])
2169 AS_IF([test x"$enable_large_address_aware" = xyes],
2170 [AC_DEFINE([MINGW_DEFAULT_LARGE_ADDR_AWARE], 1,
2171 [Define if we should link mingw executables with --large-address-aware])])
2173 AC_ARG_ENABLE(leading-mingw64-underscores,
2174 AS_HELP_STRING([--enable-leading-mingw64-underscores],
2175 [enable leading underscores on 64 bit mingw targets]),
2177 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
2178 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
2179 [Define if we should use leading underscore on 64 bit mingw targets])])
2182 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
2185 AC_ARG_ENABLE(frame-pointer,
2186 [AS_HELP_STRING([--enable-frame-pointer],
2187 [enable -fno-omit-frame-pointer by default for x86])], [],
2190 linux* | gnu* | darwin[[8912]]* | cygwin* | mingw*)
2191 # Enable -fomit-frame-pointer by default for these systems with DWARF2.
2192 enable_frame_pointer=no
2195 enable_frame_pointer=yes
2201 i[[34567]]86-*-* | x86_64-*-*)
2202 if test "x$enable_cld" = xyes; then
2203 tm_defines="${tm_defines} USE_IX86_CLD=1"
2205 if test "x$enable_frame_pointer" = xyes; then
2206 tm_defines="${tm_defines} USE_IX86_FRAME_POINTER=1"
2211 # Windows32 Registry support for specifying GCC installation paths.
2212 AC_ARG_ENABLE(win32-registry,
2213 [AS_HELP_STRING([--disable-win32-registry],
2214 [disable lookup of installation paths in the
2215 Registry on Windows hosts])
2216 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
2217 AS_HELP_STRING([--enable-win32-registry=KEY],
2218 [use KEY instead of GCC version as the last portion
2219 of the registry key])],,)
2222 win32 | pe | cygwin* | mingw32*)
2223 if test "x$enable_win32_registry" != xno; then
2224 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
2227 if test "x$enable_win32_registry" != xno; then
2228 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
2229 [Define to 1 if installation paths should be looked up in the Windows
2230 Registry. Ignored on non-Windows hosts.])
2232 if test "x$enable_win32_registry" != xyes \
2233 && test "x$enable_win32_registry" != x; then
2234 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
2235 [Define to be the last component of the Windows registry key under which
2236 to look for installation paths. The full key used will be
2237 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
2238 The default is the GCC version number.])
2244 # Get an absolute path to the GCC top-level source directory
2245 holddir=`${PWDCMD-pwd}`
2247 topdir=`${PWDCMD-pwd}`
2250 # Conditionalize the makefile for this host machine.
2252 for f in ${host_xmake_file}
2254 if test -f ${srcdir}/config/$f
2256 xmake_file="${xmake_file} \$(srcdir)/config/$f"
2260 # Conditionalize the makefile for this target machine.
2262 for f in ${tmake_file}
2264 if test -f ${srcdir}/config/$f
2266 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
2269 tmake_file="${tmake_file_}${omp_device_property_tmake_file}"
2271 out_object_file=`basename $out_file .c`.o
2272 common_out_object_file=`basename $common_out_file .c`.o
2274 tm_file_list="options.h"
2275 tm_include_list="options.h insn-constants.h"
2276 for f in $tm_file; do
2279 f=`echo $f | sed 's/^..//'`
2280 tm_file_list="${tm_file_list} $f"
2281 tm_include_list="${tm_include_list} $f"
2284 tm_file_list="${tm_file_list} \$(srcdir)/$f"
2285 tm_include_list="${tm_include_list} $f"
2288 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
2289 tm_include_list="${tm_include_list} config/$f"
2296 for f in $tm_p_file; do
2299 tm_p_file_list="${tm_p_file_list} $f"
2300 tm_p_include_list="${tm_p_include_list} $f"
2303 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
2304 tm_p_include_list="${tm_p_include_list} config/$f"
2309 tm_d_include_list="options.h insn-constants.h"
2310 for f in $tm_d_file; do
2313 tm_d_file_list="${tm_d_file_list} \$(srcdir)/$f"
2314 tm_d_include_list="${tm_d_include_list} $f"
2317 tm_d_file_list="${tm_d_file_list} \$(srcdir)/config/$f"
2318 tm_d_include_list="${tm_d_include_list} config/$f"
2325 for f in $xm_file; do
2328 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
2329 xm_include_list="${xm_include_list} $f"
2332 xm_file_list="${xm_file_list} $f"
2333 xm_include_list="${xm_include_list} $f"
2336 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
2337 xm_include_list="${xm_include_list} config/$f"
2343 host_xm_include_list=
2344 for f in $host_xm_file; do
2347 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
2348 host_xm_include_list="${host_xm_include_list} $f"
2351 host_xm_file_list="${host_xm_file_list} $f"
2352 host_xm_include_list="${host_xm_include_list} $f"
2355 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
2356 host_xm_include_list="${host_xm_include_list} config/$f"
2362 for f in $build_xm_file; do
2365 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
2366 build_xm_include_list="${build_xm_include_list} $f"
2368 auto-build.h | auto-host.h )
2369 build_xm_file_list="${build_xm_file_list} $f"
2370 build_xm_include_list="${build_xm_include_list} $f"
2373 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
2374 build_xm_include_list="${build_xm_include_list} config/$f"
2379 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
2380 # cross-compiler which does not use the native headers and libraries.
2381 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
2382 CROSS= AC_SUBST(CROSS)
2383 ALL=all.internal AC_SUBST(ALL)
2384 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
2385 BUILD_SYSTEM_HEADER_DIR=$SYSTEM_HEADER_DIR AC_SUBST(BUILD_SYSTEM_HEADER_DIR)
2387 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x ||
2388 test x$build != x$host || test "x$with_build_sysroot" != x; then
2389 if test "x$with_build_sysroot" != x; then
2390 BUILD_SYSTEM_HEADER_DIR=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
2392 BUILD_SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2395 if test x$host != x$target
2397 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
2399 SYSTEM_HEADER_DIR=$BUILD_SYSTEM_HEADER_DIR
2400 elif test "x$TARGET_SYSTEM_ROOT" != x; then
2401 SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2404 if test "x$with_build_sysroot" != "x"; then
2405 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
2406 elif test "x$with_sysroot" = x; then
2407 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
2408 elif test "x$with_sysroot" = xyes; then
2409 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
2411 target_header_dir="${with_sysroot}${native_system_header_dir}"
2414 target_header_dir=${native_system_header_dir}
2417 # If this is a cross-compiler that does not
2418 # have its own set of headers then define
2421 # If this is using newlib, without having the headers available now,
2422 # then define inhibit_libc in LIBGCC2_CFLAGS.
2423 # This prevents libgcc2 from containing any code which requires libc
2425 : ${inhibit_libc=false}
2426 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
2427 test x$with_newlib = xyes ; } &&
2428 { test "x$with_headers" = xno || test ! -f "$target_header_dir/stdio.h"; } ; then
2431 AC_SUBST(inhibit_libc)
2433 # When building gcc with a cross-compiler, we need to adjust things so
2434 # that the generator programs are still built with the native compiler.
2435 # Also, we cannot run fixincludes.
2437 # These are the normal (build=host) settings:
2438 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
2439 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
2440 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
2441 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
2442 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
2443 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
2445 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS)' AC_SUBST(BUILD_NO_PIE_CFLAGS)
2446 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG)' AC_SUBST(BUILD_NO_PIE_FLAG)
2448 # And these apply if build != host, or we are generating coverage data
2449 if test x$build != x$host || test "x$coverage_flags" != x
2451 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS-$@) $(CFLAGS_FOR_BUILD)'
2452 BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS-$@) $(CXXFLAGS_FOR_BUILD)'
2453 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
2455 NO_PIE_CFLAGS_FOR_BUILD=${NO_PIE_CFLAGS_FOR_BUILD-${NO_PIE_CFLAGS}}
2456 NO_PIE_FLAG_FOR_BUILD=${NO_PIE_FLAG_FOR_BUILD-${NO_PIE_FLAG}}
2457 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS_FOR_BUILD)'
2458 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG_FOR_BUILD)'
2460 AC_SUBST(NO_PIE_CFLAGS_FOR_BUILD)
2461 AC_SUBST(NO_PIE_FLAG_FOR_BUILD)
2463 # Expand extra_headers to include complete path.
2464 # This substitutes for lots of t-* files.
2466 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
2467 for file in ${extra_headers} ; do
2468 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
2471 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
2472 if test x"$use_gcc_tgmath" = xyes
2473 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
2476 # Define collect2 in Makefile.
2477 case $host_can_use_collect2 in
2479 *) collect2='collect2$(exeext)' ;;
2481 AC_SUBST([collect2])
2483 # Add a definition of USE_COLLECT2 if system wants one.
2484 case $use_collect2 in
2485 no) use_collect2= ;;
2488 host_xm_defines="${host_xm_defines} USE_COLLECT2"
2489 xm_defines="${xm_defines} USE_COLLECT2"
2490 case $host_can_use_collect2 in
2492 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
2498 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
2499 [Define to the name of the LTO plugin DSO that must be
2500 passed to the linker's -plugin=LIB option.])
2502 # ---------------------------
2503 # Assembler & linker features
2504 # ---------------------------
2506 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
2507 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
2508 # However when ld-new is first executed from the build tree, libtool will
2509 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
2510 # to the build tree. While doing this we need to use the previous-stage
2511 # linker, or we have an infinite loop. The presence of a shell script as
2512 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
2513 # the gcc/collect-ld script. So we need to know how libtool works, or
2514 # exec-tool will fail.
2516 m4_defun([_LT_CONFIG_COMMANDS], [])
2519 AC_SUBST(enable_fast_install)
2521 # Identify the assembler which will work hand-in-glove with the newly
2522 # built GCC, so that we can examine its features. This is the assembler
2523 # which will be driven by the driver program.
2525 # If build != host, and we aren't building gas in-tree, we identify a
2526 # build->target assembler and hope that it will have the same features
2527 # as the host->target assembler we'll be using.
2528 gcc_cv_gas_major_version=
2529 gcc_cv_gas_minor_version=
2530 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
2532 m4_pattern_allow([AS_FOR_TARGET])dnl
2533 AS_VAR_SET_IF(gcc_cv_as,, [
2534 if test -x "$DEFAULT_ASSEMBLER"; then
2535 gcc_cv_as="$DEFAULT_ASSEMBLER"
2536 elif test -f $gcc_cv_as_gas_srcdir/configure.ac \
2537 && test -f ../gas/Makefile \
2538 && test x$build = x$host; then
2539 gcc_cv_as=../gas/as-new$build_exeext
2540 elif test -x as$build_exeext; then
2541 # Build using assembler in the current directory.
2542 gcc_cv_as=./as$build_exeext
2543 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
2544 gcc_cv_as="$AS_FOR_TARGET"
2546 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
2549 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
2550 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
2551 case "$ORIGINAL_AS_FOR_TARGET" in
2552 ./as | ./as$build_exeext) ;;
2553 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2556 AC_MSG_CHECKING(what assembler to use)
2557 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
2558 # Single tree build which includes gas. We want to prefer it
2559 # over whatever linker top-level may have detected, since
2560 # we'll use what we're building after installation anyway.
2561 AC_MSG_RESULT(newly built gas)
2563 _gcc_COMPUTE_GAS_VERSION
2564 in_tree_gas_is_elf=no
2565 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
2566 || (grep 'obj_format = multi' ../gas/Makefile \
2567 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
2569 in_tree_gas_is_elf=yes
2572 AC_MSG_RESULT($gcc_cv_as)
2578 [[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]],
2579 [case "${enableval}" in
2585 install_gold_as_default=no
2587 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
2588 [case "${enableval}" in
2590 install_gold_as_default=yes
2593 if test x${default_ld} != x; then
2594 install_gold_as_default=yes
2600 AC_MSG_ERROR([invalid --enable-gold argument])
2604 # Identify the linker which will work hand-in-glove with the newly
2605 # built GCC, so that we can examine its features. This is the linker
2606 # which will be driven by the driver program.
2608 # If build != host, and we aren't building gas in-tree, we identify a
2609 # build->target linker and hope that it will have the same features
2610 # as the host->target linker we'll be using.
2611 gcc_cv_gld_major_version=
2612 gcc_cv_gld_minor_version=
2613 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2614 gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold
2615 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2617 AS_VAR_SET_IF(gcc_cv_ld,, [
2618 if test -x "$DEFAULT_LINKER"; then
2619 gcc_cv_ld="$DEFAULT_LINKER"
2620 elif test $install_gold_as_default = yes \
2621 && test -f $gcc_cv_ld_gold_srcdir/configure.ac \
2622 && test -f ../gold/Makefile \
2623 && test x$build = x$host; then
2624 gcc_cv_ld=../gold/ld-new$build_exeext
2625 elif test -f $gcc_cv_ld_gld_srcdir/configure.ac \
2626 && test -f ../ld/Makefile \
2627 && test x$build = x$host; then
2628 gcc_cv_ld=../ld/ld-new$build_exeext
2629 elif test -x collect-ld$build_exeext; then
2630 # Build using linker in the current directory.
2631 gcc_cv_ld=./collect-ld$build_exeext
2632 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2633 gcc_cv_ld="$LD_FOR_TARGET"
2635 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2638 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2639 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2640 # if the PLUGIN_LD is set ld-new, just have it as ld
2641 # as that is the installed named.
2642 if test x$PLUGIN_LD_SUFFIX = xld-new \
2643 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2646 AC_ARG_WITH(plugin-ld,
2647 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2648 [if test x"$withval" != x; then
2649 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2650 PLUGIN_LD_SUFFIX="$withval"
2652 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2653 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2655 # Check to see if we are using gold instead of ld
2656 AC_MSG_CHECKING(whether we are using gold)
2658 if test x$gcc_cv_ld != x; then
2659 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2660 | grep "GNU gold" > /dev/null; then
2664 AC_MSG_RESULT($ld_is_gold)
2666 AC_MSG_CHECKING(gold linker with split stack support as non default)
2667 # Check to see if default ld is not gold, but gold is
2668 # available and has support for split stack. If gcc was configured
2669 # with gold then no checking is done.
2671 if test x$ld_is_gold = xno && which ${gcc_cv_ld}.gold >/dev/null 2>&1; then
2673 # For platforms other than powerpc64*, enable as appropriate.
2676 ld_gold=`which ${gcc_cv_ld}.gold`
2677 # Make sure this gold has minimal split stack support
2678 if $ld_gold --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then
2679 ld_vers=`$ld_gold --version | sed 1q`
2680 gold_vers=`echo $ld_vers | sed -n \
2681 -e 's,^[[^)]]*[[ ]]\([[0-9]][[0-9]]*\.[[0-9]][[0-9]]*[[^)]]*\)) .*$,\1,p'`
2683 # check that the gold version contains the complete split stack support
2684 # on powerpc64 big and little endian
2686 case "$gold_vers" in
2687 2.25.[[1-9]]*|2.2[[6-9]][[.0-9]]*|2.[[3-9]][[.0-9]]*|[[3-9]].[[.0-9]]*) gold_non_default=yes
2689 *) gold_non_default=no
2695 if test $gold_non_default = yes; then
2696 AC_DEFINE(HAVE_GOLD_NON_DEFAULT_SPLIT_STACK, 1,
2697 [Define if the gold linker supports split stack and is available as a non-default])
2700 AC_MSG_RESULT($gold_non_default)
2702 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2703 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2704 case "$ORIGINAL_LD_FOR_TARGET" in
2705 ./collect-ld | ./collect-ld$build_exeext) ;;
2706 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2709 AC_MSG_CHECKING(what linker to use)
2710 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2711 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2712 # Single tree build which includes ld. We want to prefer it
2713 # over whatever linker top-level may have detected, since
2714 # we'll use what we're building after installation anyway.
2715 AC_MSG_RESULT(newly built ld)
2717 in_tree_ld_is_elf=no
2718 if (grep 'EMUL = .*elf' ../ld/Makefile \
2719 || grep 'EMUL = .*linux' ../ld/Makefile \
2720 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2721 in_tree_ld_is_elf=yes
2722 elif test "$ld_is_gold" = yes; then
2723 in_tree_ld_is_elf=yes
2725 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
2728 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2729 if test x$gcc_cv_gld_version != x; then
2733 case $gcc_cv_gld_version in
2736 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2739 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2740 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2742 ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext
2743 ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext
2745 AC_MSG_RESULT($gcc_cv_ld)
2747 gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext`
2748 ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext
2749 ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext
2752 AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET)
2753 AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET)
2755 # Figure out what nm we will be using.
2756 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2757 AS_VAR_SET_IF(gcc_cv_nm,, [
2758 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2759 && test -f ../binutils/Makefile \
2760 && test x$build = x$host; then
2761 gcc_cv_nm=../binutils/nm-new$build_exeext
2762 elif test -x nm$build_exeext; then
2763 gcc_cv_nm=./nm$build_exeext
2764 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2765 gcc_cv_nm="$NM_FOR_TARGET"
2767 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2770 AC_MSG_CHECKING(what nm to use)
2771 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2772 # Single tree build which includes binutils.
2773 AC_MSG_RESULT(newly built nm)
2776 AC_MSG_RESULT($gcc_cv_nm)
2780 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2781 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2782 case "$ORIGINAL_NM_FOR_TARGET" in
2783 ./nm | ./nm$build_exeext) ;;
2784 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2788 # Figure out what objdump we will be using.
2789 AS_VAR_SET_IF(gcc_cv_objdump,, [
2790 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2791 && test -f ../binutils/Makefile \
2792 && test x$build = x$host; then
2793 # Single tree build which includes binutils.
2794 gcc_cv_objdump=../binutils/objdump$build_exeext
2795 elif test -x objdump$build_exeext; then
2796 gcc_cv_objdump=./objdump$build_exeext
2797 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2798 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2800 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2803 AC_MSG_CHECKING(what objdump to use)
2804 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2805 # Single tree build which includes binutils.
2806 AC_MSG_RESULT(newly built objdump)
2807 elif test x$gcc_cv_objdump = x; then
2808 AC_MSG_RESULT(not found)
2810 AC_MSG_RESULT($gcc_cv_objdump)
2813 # Figure out what readelf we will be using.
2814 AS_VAR_SET_IF(gcc_cv_readelf,, [
2815 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2816 && test -f ../binutils/Makefile \
2817 && test x$build = x$host; then
2818 # Single tree build which includes binutils.
2819 gcc_cv_readelf=../binutils/readelf$build_exeext
2820 elif test -x readelf$build_exeext; then
2821 gcc_cv_readelf=./readelf$build_exeext
2822 elif ( set dummy $READELF_FOR_TARGET; test -x $[2] ); then
2823 gcc_cv_readelf="$READELF_FOR_TARGET"
2825 AC_PATH_PROG(gcc_cv_readelf, $READELF_FOR_TARGET)
2828 AC_MSG_CHECKING(what readelf to use)
2829 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2830 # Single tree build which includes binutils.
2831 AC_MSG_RESULT(newly built readelf)
2832 elif test x$gcc_cv_readelf = x; then
2833 AC_MSG_RESULT(not found)
2835 AC_MSG_RESULT($gcc_cv_readelf)
2838 # Figure out what otool we will be using.
2839 AS_VAR_SET_IF(gcc_cv_otool,, [
2840 if test -x otool$build_exeext; then
2841 gcc_cv_otool=./otool$build_exeext
2842 elif ( set dummy $OTOOL_FOR_TARGET; test -x $[2] ); then
2843 gcc_cv_otool="$OTOOL_FOR_TARGET"
2845 AC_PATH_PROG(gcc_cv_otool, $OTOOL_FOR_TARGET)
2848 AC_MSG_CHECKING(what otool to use)
2849 if test x$gcc_cv_otool = x; then
2850 AC_MSG_RESULT(not found)
2852 AC_MSG_RESULT($gcc_cv_otool)
2855 # Figure out what assembler alignment features are present.
2856 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2860 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2861 [Define if your assembler supports .balign and .p2align.])])
2863 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2866 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2867 [Define if your assembler supports specifying the maximum number
2868 of bytes to skip when using the GAS .p2align command.])])
2870 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2873 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2874 [Define if your assembler supports .literal16.])])
2876 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2878 [conftest_label1: .word 0
2880 conftest_label2: .word 0
2882 [if test x$gcc_cv_nm != x; then
2883 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2884 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2885 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2887 else gcc_cv_as_subsection_m1=yes
2889 rm -f conftest.nm1 conftest.nm2
2891 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2892 [Define if your assembler supports .subsection and .subsection -1 starts
2893 emitting at the beginning of your section.])])
2895 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2898 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2900 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2902 [ .weakref foobar, barfnot],,
2903 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2905 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2908 .NSUBSPA $CODE$,COMDAT],,
2909 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2911 # .hidden needs to be supported in both the assembler and the linker,
2912 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2913 # This is irritatingly difficult to feature test for; we have to check the
2914 # date string after the version number. If we've got an in-tree
2915 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2917 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2920 conftest_s=' .globl foobar,hidden'
2923 conftest_s=' .hidden foobar
2927 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2928 [elf,2,13,0],, [$conftest_s])
2931 # Darwin as has some visibility support, though with a different syntax.
2932 gcc_cv_as_hidden=yes
2936 # gnu_indirect_function type is an extension proposed at
2937 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2938 # selection of function implementation
2939 AC_ARG_ENABLE(gnu-indirect-function,
2940 [AS_HELP_STRING([--enable-gnu-indirect-function],
2941 [enable the use of the @gnu_indirect_function to glibc systems])],
2942 [case $enable_gnu_indirect_function in
2944 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2945 Valid choices are 'yes' and 'no'.]) ;;
2947 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2951 AC_MSG_CHECKING(linker ifunc IRELATIVE support)
2952 cat > conftest.s <<EOF
2954 .type foo_resolver, @function
2957 .size foo_resolver, .-foo_resolver
2960 .type foo, %gnu_indirect_function
2961 .set foo, foo_resolver
2964 .type bar, @function
2970 if test x$gcc_cv_as != x \
2971 && test x$gcc_cv_ld != x \
2972 && test x$gcc_cv_readelf != x \
2973 && $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2974 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1 \
2975 && $gcc_cv_readelf --relocs --wide conftest \
2976 | grep R_RISCV_IRELATIVE > /dev/null 2>&1; then
2977 enable_gnu_indirect_function=yes
2979 rm -f conftest conftest.o conftest.s
2980 AC_MSG_RESULT($enable_gnu_indirect_function)
2984 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
2985 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
2986 [Define if your system supports gnu indirect functions.])
2990 if test $in_tree_ld != yes ; then
2991 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2992 if echo "$ld_ver" | grep GNU > /dev/null; then
2993 if test x"$ld_is_gold" = xyes; then
2994 # GNU gold --version looks like this:
2996 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2998 # We extract the binutils version which is more familiar and specific
2999 # than the gold version.
3000 ld_vers=`echo $ld_ver | sed -n \
3001 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3003 # GNU ld --version looks like this:
3005 # GNU ld (GNU Binutils) 2.21.51.20110225
3006 ld_vers=`echo $ld_ver | sed -n \
3007 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3009 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)\(-*\)\([01][0-9]\)\2\([0-3][0-9]\).*$,\1\3\4,p'`
3010 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3011 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3012 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
3016 # Solaris 2 ld -V output looks like this for a regular version:
3018 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
3020 # but test versions add stuff at the end:
3022 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
3024 # ld and ld.so.1 are guaranteed to be updated in lockstep, so ld version
3025 # numbers can be used in ld.so.1 feature checks even if a different
3026 # linker is configured.
3027 ld_ver=`$gcc_cv_ld -V 2>&1`
3028 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
3029 ld_vers=`echo $ld_ver | sed -n \
3030 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
3031 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3032 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3040 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
3041 [[if test $in_tree_ld = yes ; then
3043 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
3044 && test $in_tree_ld_is_elf = yes; then
3045 gcc_cv_ld_hidden=yes
3048 gcc_cv_ld_hidden=yes
3049 if test x"$ld_is_gold" = xyes; then
3051 elif echo "$ld_ver" | grep GNU > /dev/null; then
3052 if test 0"$ld_date" -lt 20020404; then
3053 if test -n "$ld_date"; then
3054 # If there was date string, but was earlier than 2002-04-04, fail
3056 elif test -z "$ld_vers"; then
3057 # If there was no date string nor ld version number, something is wrong
3060 test -z "$ld_vers_patch" && ld_vers_patch=0
3061 if test "$ld_vers_major" -lt 2; then
3063 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
3064 gcc_cv_ld_hidden="no"
3065 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
3073 gcc_cv_ld_hidden=yes
3076 # Darwin ld has some visibility support.
3077 gcc_cv_ld_hidden=yes
3079 hppa64*-*-hpux* | ia64*-*-hpux*)
3080 gcc_cv_ld_hidden=yes
3083 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
3084 # .symbolic was only added in Solaris 9 12/02.
3085 gcc_cv_ld_hidden=yes
3093 libgcc_visibility=no
3094 AC_SUBST(libgcc_visibility)
3095 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
3096 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
3097 libgcc_visibility=yes
3098 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
3099 [Define if your assembler and linker support .hidden.])
3102 AC_MSG_CHECKING(linker read-only and read-write section mixing)
3103 gcc_cv_ld_ro_rw_mix=unknown
3104 if test $in_tree_ld = yes ; then
3105 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
3106 && test $in_tree_ld_is_elf = yes; then
3107 gcc_cv_ld_ro_rw_mix=read-write
3109 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3110 echo '.section myfoosect, "a"' > conftest1.s
3111 echo '.section myfoosect, "aw"' > conftest2.s
3112 echo '.byte 1' >> conftest2.s
3113 echo '.section myfoosect, "a"' > conftest3.s
3114 echo '.byte 0' >> conftest3.s
3115 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
3116 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
3117 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
3118 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
3119 conftest2.o conftest3.o > /dev/null 2>&1; then
3120 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
3121 | sed -e '/myfoosect/!d' -e N`
3122 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
3123 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
3124 gcc_cv_ld_ro_rw_mix=read-only
3126 gcc_cv_ld_ro_rw_mix=read-write
3131 rm -f conftest.* conftest[123].*
3134 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
3135 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
3136 [Define if your linker links a mix of read-only
3137 and read-write sections into a read-write section.])
3139 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
3141 gcc_AC_INITFINI_ARRAY
3143 # Check if we have .[us]leb128, and support symbol arithmetic with it.
3144 # Older versions of GAS and some non-GNU assemblers, have a bugs handling
3145 # these directives, even when they appear to accept them.
3146 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
3154 .uleb128 0x8000000000000000
3157 if test "x$gcc_cv_objdump" != x; then
3158 if $gcc_cv_objdump -s conftest.o 2>/dev/null \
3159 | grep '04800a8e 78808080 80808080 808001' >/dev/null; then
3160 gcc_cv_as_leb128=yes
3162 elif test "x$gcc_cv_otool" != x; then
3163 if $gcc_cv_otool -d conftest.o 2>/dev/null \
3164 | grep '04 80 0a 8e 78 80 80 80 80 80 80 80 80 80 01' >/dev/null; then
3165 gcc_cv_as_leb128=yes
3168 # play safe, assume the assembler is broken.
3172 [AC_DEFINE(HAVE_AS_LEB128, 1,
3173 [Define if your assembler supports .sleb128 and .uleb128.])],
3174 [AC_DEFINE(HAVE_AS_LEB128, 0,
3175 [Define if your assembler supports .sleb128 and .uleb128.])])
3177 # Determine if an .eh_frame section is read-only.
3178 gcc_fn_eh_frame_ro () {
3179 $gcc_cv_as $1 -o conftest.o conftest.s > /dev/null 2>&1 && \
3180 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
3181 sed -e '/.eh_frame/!d' -e N | grep READONLY > /dev/null
3184 # Check if we have assembler support for unwind directives.
3185 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
3192 .cfi_escape 1, 2, 3, 4, 5
3196 # If the linker used on Solaris (like Sun ld) isn't capable of merging
3197 # read-only and read-write sections, we need to make sure that the
3198 # assembler used emits read-write .eh_frame sections.
3199 if test "x$gcc_cv_ld_ro_rw_mix" = xread-write; then
3200 gcc_cv_as_cfi_directive=yes
3201 elif test "x$gcc_cv_objdump" = x; then
3202 # No objdump, err on the side of caution.
3203 gcc_cv_as_cfi_directive=no
3205 if test x$gas = xyes; then
3213 sparc*-*-solaris2.*)
3214 # On Solaris/SPARC, .eh_frame sections should always be read-write.
3215 if gcc_fn_eh_frame_ro $as_32_opt \
3216 || gcc_fn_eh_frame_ro $as_64_opt; then
3217 gcc_cv_as_cfi_directive=no
3219 gcc_cv_as_cfi_directive=yes
3222 i?86-*-solaris2.* | x86_64-*-solaris2.*)
3223 # On Solaris/x86, make sure that GCC and assembler agree on using
3224 # read-only .eh_frame sections for 64-bit.
3225 if gcc_fn_eh_frame_ro $as_32_opt; then
3226 gcc_cv_as_cfi_directive=no
3227 elif gcc_fn_eh_frame_ro $as_64_opt; then
3228 gcc_cv_as_cfi_directive=yes
3230 gcc_cv_as_cfi_directive=no
3237 gcc_cv_as_cfi_directive=yes
3240 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
3241 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
3245 .cfi_adjust_cfa_offset 64
3247 .cfi_adjust_cfa_offset 128
3250 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
3251 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
3252 gcc_cv_as_cfi_advance_working=yes
3256 # no objdump, err on the side of caution
3257 gcc_cv_as_cfi_advance_working=no
3259 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
3260 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
3261 [`if test $gcc_cv_as_cfi_directive = yes \
3262 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
3263 [Define 0/1 if your assembler supports CFI directives.])
3265 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
3266 gcc_GAS_CHECK_FEATURE([cfi personality directive],
3267 gcc_cv_as_cfi_personality_directive, ,,
3270 .cfi_personality 0, symbol
3272 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
3273 [`if test $gcc_cv_as_cfi_personality_directive = yes; then echo 1; else echo 0; fi`],
3274 [Define 0/1 if your assembler supports .cfi_personality.])
3276 gcc_GAS_CHECK_FEATURE([cfi sections directive],
3277 gcc_cv_as_cfi_sections_directive, ,,
3279 .cfi_sections .debug_frame, .eh_frame
3283 win32 | pe | cygwin* | mingw32*)
3284 # Need to check that we generated the correct relocation for the
3285 # .debug_frame section. This was fixed for binutils 2.21.
3286 gcc_cv_as_cfi_sections_directive=no
3287 if test "x$gcc_cv_objdump" != x; then
3288 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
3289 grep secrel > /dev/null; then
3290 gcc_cv_as_cfi_sections_directive=yes
3295 gcc_cv_as_cfi_sections_directive=yes
3298 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
3299 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
3300 [`if test $gcc_cv_as_cfi_sections_directive = yes; then echo 1; else echo 0; fi`],
3301 [Define 0/1 if your assembler supports .cfi_sections.])
3303 # GAS versions up to and including 2.11.0 may mis-optimize
3305 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
3313 .section .eh_frame,"aw",@progbits
3315 .4byte .LECIE1-.LSCIE1
3329 .4byte .LEFDE1-.LASFDE1
3331 .4byte .LASFDE1-__FRAME_BEGIN__
3339 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
3340 cat > conftest.lit <<EOF
3341 0000 10000000 00000000 017a0001 781a0004 .........z..x...
3342 0010 01000000 12000000 18000000 00000000 ................
3343 0020 08000000 04080000 0044 .........D @&t@
3345 cat > conftest.big <<EOF
3346 0000 00000010 00000000 017a0001 781a0004 .........z..x...
3347 0010 00000001 00000012 00000018 00000000 ................
3348 0020 00000008 04000000 0844 .........D @&t@
3350 # If the assembler didn't choke, and we can objdump,
3351 # and we got the correct data, then succeed.
3352 # The text in the here-document typically retains its unix-style line
3353 # endings, while the output of objdump will use host line endings.
3354 # Therefore, use diff -b for the comparisons.
3355 if test x$gcc_cv_objdump != x \
3356 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
3357 | tail -3 > conftest.got \
3358 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
3359 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
3361 gcc_cv_as_eh_frame=yes
3362 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
3363 gcc_cv_as_eh_frame=buggy
3365 # Uh oh, what do we do now?
3366 gcc_cv_as_eh_frame=no
3369 if test $gcc_cv_as_eh_frame = buggy; then
3370 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
3371 [Define if your assembler mis-optimizes .eh_frame data.])
3374 # Test if the assembler supports the section flag 'e' or #exclude for
3375 # specifying an excluded section.
3376 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_e,
3377 [2,22,51], [--fatal-warnings],
3380 if test $gcc_cv_as_section_exclude_e = no; then
3382 # Solaris as uses #exclude instead.
3386 conftest_s='.section "foo1", #exclude'
3388 i?86-*-solaris2* | x86_64-*-solaris2*)
3389 conftest_s='.section foo1, #exclude'
3394 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_hash,,,
3398 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3399 [`if test $gcc_cv_as_section_exclude_e = yes || test $gcc_cv_as_section_exclude_hash = yes; then echo 1; else echo 0; fi`],
3400 [Define if your assembler supports specifying the exclude section flag.])
3402 # Test if the assembler supports the section flag 'R' for specifying
3403 # section with SHF_GNU_RETAIN.
3405 # Solaris may use GNU assembler with Solairs ld. Even if GNU
3406 # assembler supports the section flag 'R', it doesn't mean that
3407 # Solairs ld supports it.
3409 gcc_cv_as_shf_gnu_retain=no
3412 gcc_GAS_CHECK_FEATURE([section 'R' flag], gcc_cv_as_shf_gnu_retain,
3413 [elf,2,36,0], [--fatal-warnings],
3414 [.section .foo,"awR",%progbits
3418 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_GNU_RETAIN,
3419 [`if test $gcc_cv_as_shf_gnu_retain = yes; then echo 1; else echo 0; fi`],
3420 [Define 0/1 if your assembler supports marking sections with SHF_GNU_RETAIN flag.])
3422 # Test if the assembler supports the section flag 'o' for specifying
3423 # section with link-order.
3425 # Solaris may use GNU assembler with Solairs ld. Even if GNU
3426 # assembler supports the section flag 'o', it doesn't mean that
3427 # Solairs ld supports it.
3429 gcc_cv_as_section_link_order=no
3432 gcc_GAS_CHECK_FEATURE([section 'o' flag], gcc_cv_as_section_link_order,
3433 [2,35,0], [--fatal-warnings],
3436 .section __patchable_function_entries,"awo",%progbits,.foo
3440 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_LINK_ORDER,
3441 [`if test $gcc_cv_as_section_link_order = yes; then echo 1; else echo 0; fi`],
3442 [Define 0/1 if your assembler supports 'o' flag in .section directive.])
3444 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
3445 [elf,2,12,0], [--fatal-warnings],
3446 [.section .rodata.str, "aMS", @progbits, 1])
3447 if test $gcc_cv_as_shf_merge = no; then
3448 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
3449 [elf,2,12,0], [--fatal-warnings],
3450 [.section .rodata.str, "aMS", %progbits, 1])
3452 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
3453 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
3454 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
3456 gcc_cv_ld_aligned_shf_merge=yes
3458 # SHF_MERGE support is broken in Solaris ld up to Solaris 11.3/SPARC for
3460 sparc*-*-solaris2.11*)
3461 if test x"$gnu_ld" = xno \
3462 && test "$ld_vers_major" -lt 2 && test "$ld_vers_minor" -lt 3159; then
3463 gcc_cv_ld_aligned_shf_merge=no
3467 AC_DEFINE_UNQUOTED(HAVE_LD_ALIGNED_SHF_MERGE,
3468 [`if test $gcc_cv_ld_aligned_shf_merge = yes; then echo 1; else echo 0; fi`],
3469 [Define 0/1 if your linker supports the SHF_MERGE flag with section alignment > 1.])
3471 gcc_GAS_CHECK_FEATURE([stabs directive], gcc_cv_as_stabs_directive, ,,
3472 [.stabs "gcc2_compiled.",60,0,0,0],,
3473 [AC_DEFINE(HAVE_AS_STABS_DIRECTIVE, 1,
3474 [Define if your assembler supports .stabs.])])
3476 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
3477 gcc_cv_as_comdat_group,
3478 [elf,2,16,0], [--fatal-warnings],
3479 [.section .text,"axG",@progbits,.foo,comdat])
3480 if test $gcc_cv_as_comdat_group = yes; then
3481 gcc_cv_as_comdat_group_percent=no
3482 gcc_cv_as_comdat_group_group=no
3484 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
3485 gcc_cv_as_comdat_group_percent,
3486 [elf,2,16,0], [--fatal-warnings],
3487 [.section .text,"axG",%progbits,.foo,comdat])
3488 if test $gcc_cv_as_comdat_group_percent = yes; then
3489 gcc_cv_as_comdat_group_group=no
3492 # Sun as uses a completely different syntax.
3497 .group foo,".text%foo",#comdat
3498 .section ".text%foo", #alloc,#execinstr,#progbits
3503 i?86-*-solaris2* | x86_64-*-solaris2*)
3505 .group foo,.text%foo,#comdat
3506 .section .text%foo, "ax", @progbits
3512 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
3513 gcc_cv_as_comdat_group_group,
3517 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
3518 gcc_cv_as_comdat_group_group=no
3522 if test x"$ld_is_gold" = xyes; then
3524 elif test $in_tree_ld = yes ; then
3526 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3527 && test $in_tree_ld_is_elf = yes; then
3530 elif echo "$ld_ver" | grep GNU > /dev/null; then
3532 if test 0"$ld_date" -lt 20050308; then
3533 if test -n "$ld_date"; then
3534 # If there was date string, but was earlier than 2005-03-08, fail
3536 elif test "$ld_vers_major" -lt 2; then
3538 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
3545 *-*-solaris2.1[1-9]*)
3547 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
3548 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
3551 # If using Sun as for COMDAT group as emitted by GCC, one needs at
3552 # least ld version 1.2267.
3553 if test "$ld_vers_major" -gt 1; then
3555 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
3557 elif test "$ld_vers_minor" -ge 2267; then
3562 # Assume linkers other than GNU ld don't support COMDAT group.
3568 # Allow overriding the automatic COMDAT group tests above.
3569 AC_ARG_ENABLE(comdat,
3570 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
3571 [comdat_group="$enable_comdat"])
3572 if test $comdat_group = no; then
3573 gcc_cv_as_comdat_group=no
3574 gcc_cv_as_comdat_group_percent=no
3575 gcc_cv_as_comdat_group_group=no
3577 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
3578 [`if test $gcc_cv_as_comdat_group = yes \
3579 || test $gcc_cv_as_comdat_group_percent = yes \
3580 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
3581 [Define 0/1 if your assembler and linker support COMDAT groups.])
3583 # Restrict this test to Solaris/x86: other targets define this statically.
3585 i?86-*-solaris2* | x86_64-*-solaris2*)
3586 AC_MSG_CHECKING(support for hidden thunks in linkonce sections)
3587 if test $in_tree_ld = yes || echo "$ld_ver" | grep GNU > /dev/null; then
3591 # Full support for hidden thunks in linkonce sections only appeared in
3592 # Solaris 11/OpenSolaris.
3593 *-*-solaris2.1[[1-9]]*)
3601 AC_MSG_RESULT($hidden_linkonce)
3602 AC_DEFINE_UNQUOTED(USE_HIDDEN_LINKONCE,
3603 [`if test $hidden_linkonce = yes; then echo 1; else echo 0; fi`],
3604 [Define 0/1 if your linker supports hidden thunks in linkonce sections.])
3608 gcc_GAS_CHECK_FEATURE([line table is_stmt support],
3613 .loc 1 1 0 is_stmt 1],,
3614 [AC_DEFINE(HAVE_GAS_LOC_STMT, 1,
3615 [Define if your assembler supports the .loc is_stmt sub-directive.])])
3617 gcc_GAS_CHECK_FEATURE([line table discriminator support],
3618 gcc_cv_as_discriminator,
3622 .loc 1 1 0 discriminator 1],,
3623 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
3624 [Define if your assembler supports the .loc discriminator sub-directive.])])
3626 # Catch the newlib flag of the same name so we can gate GCC features on it.
3627 AC_ARG_ENABLE(newlib-nano-formatted-io,
3628 [AS_HELP_STRING([--enable-newlib-nano-formatted-io], [Use nano version
3630 [case "${enableval}" in
3634 AC_MSG_ERROR([unknown newlib-nano-formatted-io setting $enableval])
3638 # Thread-local storage - the check is heavily parameterized.
3647 .section ".tdata","awT",@progbits
3650 ldq $27,__tls_get_addr($29) !literal!1
3651 lda $16,foo($29) !tlsgd!1
3652 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
3653 ldq $27,__tls_get_addr($29) !literal!2
3654 lda $16,foo($29) !tlsldm!2
3655 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
3656 ldq $1,foo($29) !gotdtprel
3657 ldah $2,foo($29) !dtprelhi
3658 lda $3,foo($2) !dtprello
3659 lda $4,foo($29) !dtprel
3660 ldq $1,foo($29) !gottprel
3661 ldah $2,foo($29) !tprelhi
3662 lda $3,foo($2) !tprello
3663 lda $4,foo($29) !tprel'
3666 tls_as_opt=--fatal-warnings
3670 add_s r0,r0, @foo@tpoff'
3674 cris-*-*|crisv32-*-*)
3676 .section ".tdata","awT",@progbits
3683 tls_as_opt=--fatal-warnings
3687 .section ".tdata","awT",@progbits
3699 .section ".tdata","awT",@progbits
3703 addil LT%foo-$tls_gdidx$,gp
3704 ldo RT%foo-$tls_gdidx$(%r1),%arg0
3707 addil LT%foo-$tls_ldidx$,gp
3709 ldo RT%foo-$tls_ldidx$(%r1),%arg0
3710 addil LR%foo-$tls_dtpoff$,%ret0
3711 ldo RR%foo-$tls_dtpoff$(%r1),%t1
3713 addil LT%foo-$tls_ieoff$,gp
3714 ldw RT%foo-$tls_ieoff$(%r1),%t2
3717 addil LR%foo-$tls_leoff$,%t1
3718 ldo RR%foo-$tls_leoff$(%r1),%t2'
3721 tls_as_opt=--fatal-warnings
3725 .section ".tdata","awT",%progbits
3736 i[34567]86-*-* | x86_64-*-*)
3738 i[34567]86-*-solaris2.* | x86_64-*-solaris2.*)
3745 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3747 .section .tdata,"awt",@progbits'
3752 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
3753 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
3757 .section ".tdata","awT",@progbits'
3761 tls_as_opt="--fatal-warnings"
3765 if test x$on_solaris = xyes; then
3767 yes) tls_as_opt="$tls_as_opt --32" ;;
3770 conftest_s="$conftest_s
3774 leal foo@tlsgd(,%ebx,1), %eax
3775 leal foo@tlsldm(%ebx), %eax
3776 leal foo@dtpoff(%eax), %edx
3777 movl foo@gottpoff(%ebx), %eax
3778 subl foo@gottpoff(%ebx), %eax
3779 addl foo@gotntpoff(%ebx), %eax
3780 movl foo@indntpoff, %eax
3781 movl \$foo@tpoff, %eax
3782 subl \$foo@tpoff, %eax
3783 leal foo@ntpoff(%ecx), %eax"
3786 if test x$on_solaris = xyes; then
3788 yes) tls_as_opt="$tls_as_opt --64" ;;
3789 no) tls_as_opt="$tls_as_opt -xarch=amd64" ;;
3792 conftest_s="$conftest_s
3796 leaq foo@tlsgd(%rip), %rdi
3797 leaq foo@tlsld(%rip), %rdi
3798 leaq foo@dtpoff(%rax), %rdx
3799 movq foo@gottpoff(%rip), %rax
3800 movq \$foo@tpoff, %rax"
3806 .section ".tdata","awT",@progbits
3809 addl r16 = @ltoff(@dtpmod(foo#)), gp
3810 addl r17 = @ltoff(@dtprel(foo#)), gp
3811 addl r18 = @ltoff(@tprel(foo#)), gp
3812 addl r19 = @dtprel(foo#), gp
3813 adds r21 = @dtprel(foo#), r13
3814 movl r23 = @dtprel(foo#)
3815 addl r20 = @tprel(foo#), gp
3816 adds r22 = @tprel(foo#), r13
3817 movl r24 = @tprel(foo#)'
3820 tls_as_opt=--fatal-warnings
3824 .section .tdata,"awT",@progbits
3828 addik r5,r20,x@TLSGD
3829 addik r5,r20,x@TLSLDM'
3832 tls_as_opt='--fatal-warnings'
3836 .section .tdata,"awT",@progbits
3840 addiu $4, $28, %tlsgd(x)
3841 addiu $4, $28, %tlsldm(x)
3842 lui $4, %dtprel_hi(x)
3843 addiu $4, $4, %dtprel_lo(x)
3844 lw $4, %gottprel(x)($28)
3845 lui $4, %tprel_hi(x)
3846 addiu $4, $4, %tprel_lo(x)'
3849 tls_as_opt='-32 --fatal-warnings'
3853 .section .tdata,"awT",@progbits
3858 move.l x@TLSGD(%a5),%a0
3859 move.l x@TLSLDM(%a5),%a0
3860 move.l x@TLSLDO(%a5),%a0
3861 move.l x@TLSIE(%a5),%a0
3862 move.l x@TLSLE(%a5),%a0'
3865 tls_as_opt='--fatal-warnings'
3869 .section ".tdata","awT",@progbits'
3872 tls_as_opt="--fatal-warnings"
3876 .section ".tdata","awT",%progbits
3880 add x0, x0, #:tlsgd_lo12:x
3885 tls_as_opt='--fatal-warnings'
3889 .section ".tdata","awT",@progbits
3892 l.movhi r3, tpoffha(foo)
3894 l.lwz r4, tpofflo(foo)(r3)'
3897 tls_as_opt=--fatal-warnings
3901 .extern __get_tpointer
3919 .section ".tdata","awT",@progbits
3927 addi 3,2,ld0@got@tlsgd
3933 addi 3,2,x1@got@tlsld
3939 addis 9,3,x2@dtprel@ha
3940 addi 9,9,x2@dtprel@l
3943 ld 9,x3@got@dtprel(2)
3949 tls_as_opt="-a64 --fatal-warnings"
3953 .section ".tdata","awT",@progbits
3961 addi 3,31,ld0@got@tlsgd
3963 addi 3,31,x1@got@tlsld
3966 addis 9,3,x2@dtprel@ha
3967 addi 9,9,x2@dtprel@l
3968 lwz 9,x3@got@tprel(31)
3971 addis 9,2,x2@tprel@ha
3972 addi 9,9,x2@tprel@l'
3975 tls_as_opt="-a32 --fatal-warnings"
3979 .section .tdata,"awT",@progbits
3983 call __tls_get_addr'
3986 tls_as_opt='--fatal-warnings'
3990 .section ".tdata","awT",@progbits
3999 l %r1,foo@GOTNTPOFF(%r12)
4000 l %r1,0(%r1):tls_load:foo
4001 bas %r14,0(%r1,%r13):tls_gdcall:foo
4002 bas %r14,0(%r1,%r13):tls_ldcall:foo'
4005 tls_as_opt="-m31 --fatal-warnings"
4009 .section ".tdata","awT",@progbits
4017 lg %r1,foo@GOTNTPOFF(%r12)
4018 larl %r1,foo@INDNTPOFF
4019 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
4020 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
4023 tls_as_opt="-m64 -Aesame --fatal-warnings"
4025 sh-*-* | sh[123456789lbe]*-*-*)
4027 .section ".tdata","awT",@progbits
4037 tls_as_opt=--fatal-warnings
4041 sparc*-sun-solaris2.*)
4048 if test x$on_solaris = xyes && test x$gas_flag = xno; then
4050 .section ".tdata",#alloc,#write,#tls'
4055 .section ".tdata","awT",@progbits'
4058 tls_as_opt="-32 --fatal-warnings"
4060 conftest_s="$conftest_s
4063 sethi %tgd_hi22(foo), %o0
4064 add %o0, %tgd_lo10(foo), %o1
4065 add %l7, %o1, %o0, %tgd_add(foo)
4066 call __tls_get_addr, %tgd_call(foo)
4067 sethi %tldm_hi22(foo), %l1
4068 add %l1, %tldm_lo10(foo), %l2
4069 add %l7, %l2, %o0, %tldm_add(foo)
4070 call __tls_get_addr, %tldm_call(foo)
4071 sethi %tldo_hix22(foo), %l3
4072 xor %l3, %tldo_lox10(foo), %l4
4073 add %o0, %l4, %l5, %tldo_add(foo)
4074 sethi %tie_hi22(foo), %o3
4075 add %o3, %tie_lo10(foo), %o3
4076 ld [%l7 + %o3], %o2, %tie_ld(foo)
4077 add %g7, %o2, %o4, %tie_add(foo)
4078 sethi %tle_hix22(foo), %l1
4079 xor %l1, %tle_lox10(foo), %o5
4080 ld [%g7 + %o5], %o1"
4084 .section ".tdata","awT",@progbits
4087 addli r0, zero, tls_gd(foo)
4088 auli r0, zero, tls_gd_ha16(foo)
4089 addli r0, r0, tls_gd_lo16(foo)
4091 addli r0, zero, tls_ie(foo)
4092 auli r0, r0, tls_ie_ha16(foo)
4093 addli r0, r0, tls_ie_lo16(foo)'
4096 tls_as_opt="--fatal-warnings"
4100 .section ".tdata","awT",@progbits
4103 shl16insli r0, zero, hw0_last_tls_gd(foo)
4104 shl16insli r0, zero, hw1_last_tls_gd(foo)
4105 shl16insli r0, r0, hw0_tls_gd(foo)
4107 shl16insli r0, zero, hw1_last_tls_ie(foo)
4108 shl16insli r0, r0, hw0_tls_ie(foo)'
4111 tls_as_opt="--fatal-warnings"
4115 .section ".tdata","awT",@progbits
4118 movi a8, foo@TLSFUNC
4119 movi a10, foo@TLSARG
4120 callx8.tls a8, foo@TLSCALL'
4127 if test "x$enable_tls" = xno ; then
4128 : # TLS explicitly disabled.
4129 elif test "x$enable_tls" = xyes ; then
4130 set_have_as_tls=yes # TLS explicitly enabled.
4131 elif test -z "$tls_first_major"; then
4132 : # If we don't have a check, assume no support.
4134 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
4135 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
4136 [set_have_as_tls=yes])
4138 if test $set_have_as_tls = yes ; then
4139 AC_DEFINE(HAVE_AS_TLS, 1,
4140 [Define if your assembler and linker support thread-local storage.])
4143 # Target-specific assembler checks.
4145 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
4146 gcc_cv_ld_static_dynamic=no
4147 gcc_cv_ld_static_option='-Bstatic'
4148 gcc_cv_ld_dynamic_option='-Bdynamic'
4149 if test $in_tree_ld = yes ; then
4150 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
4151 gcc_cv_ld_static_dynamic=yes
4153 elif test x$gcc_cv_ld != x; then
4154 # Check if linker supports -Bstatic/-Bdynamic option
4155 if $gcc_cv_ld --help 2>&1 | grep -- -Bstatic > /dev/null \
4156 && $gcc_cv_ld --help 2>&1 | grep -- -Bdynamic > /dev/null; then
4157 gcc_cv_ld_static_dynamic=yes
4160 # AIX ld uses -b flags
4161 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
4162 gcc_cv_ld_static_dynamic=yes
4163 gcc_cv_ld_static_option="-bstatic"
4164 gcc_cv_ld_dynamic_option="-bdynamic"
4166 # HP-UX ld uses -a flags to select between shared and archive.
4168 if test x"$gnu_ld" = xno; then
4169 gcc_cv_ld_static_dynamic=yes
4170 gcc_cv_ld_static_option="-aarchive_shared"
4171 gcc_cv_ld_dynamic_option="-adefault"
4174 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
4176 gcc_cv_ld_static_dynamic=yes
4181 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
4182 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
4183 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
4184 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
4185 [Define to the linker option to disable use of shared objects.])
4186 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
4187 [Define to the linker option to enable use of shared objects.])
4189 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
4191 AC_MSG_CHECKING(linker --version-script option)
4192 gcc_cv_ld_version_script=no
4193 ld_version_script_option=''
4194 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
4195 gcc_cv_ld_version_script=yes
4196 ld_version_script_option='--version-script'
4197 elif test x$gcc_cv_ld != x; then
4199 # Solaris 2 ld always supports -M. It also supports a subset of
4200 # --version-script since Solaris 11.4, but requires
4201 # -z gnu-version-script-compat to activate.
4203 gcc_cv_ld_version_script=yes
4204 ld_version_script_option='-M'
4208 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
4209 AC_MSG_RESULT($gcc_cv_ld_version_script)
4210 AC_SUBST(ld_version_script_option)
4212 AC_MSG_CHECKING(linker soname option)
4214 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
4215 gcc_cv_ld_soname=yes
4216 ld_soname_option='-soname'
4217 elif test x$gcc_cv_ld != x; then
4220 gcc_cv_ld_soname=yes
4221 ld_soname_option='-install_name'
4223 # Solaris 2 ld always supports -h. It also supports --soname for GNU
4224 # ld compatiblity since some Solaris 10 update.
4226 gcc_cv_ld_soname=yes
4227 ld_soname_option='-h'
4231 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
4232 AC_MSG_RESULT($gcc_cv_ld_soname)
4233 AC_SUBST(ld_soname_option)
4235 if test x"$demangler_in_ld" = xyes; then
4236 AC_MSG_CHECKING(linker --demangle support)
4237 gcc_cv_ld_demangle=no
4238 if test $in_tree_ld = yes; then
4239 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
4240 gcc_cv_ld_demangle=yes
4242 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
4243 # Check if the GNU linker supports --demangle option
4244 if $gcc_cv_ld --help 2>&1 | grep no-demangle > /dev/null; then
4245 gcc_cv_ld_demangle=yes
4248 if test x"$gcc_cv_ld_demangle" = xyes; then
4249 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
4250 [Define if your linker supports --demangle option.])
4252 AC_MSG_RESULT($gcc_cv_ld_demangle)
4255 AC_MSG_CHECKING(linker plugin support)
4257 if test -f liblto_plugin.la; then
4258 save_ld_ver="$ld_ver"
4259 save_ld_vers_major="$ld_vers_major"
4260 save_ld_vers_minor="$ld_vers_minor"
4261 save_ld_is_gold="$ld_is_gold"
4265 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
4267 # FIXME: ld_is_gold?
4268 ld_vers_major="$gcc_cv_gld_major_version"
4269 ld_vers_minor="$gcc_cv_gld_minor_version"
4271 # Determine plugin linker version.
4272 # FIXME: Partial duplicate from above, generalize.
4274 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
4275 if echo "$ld_ver" | grep GNU > /dev/null; then
4276 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
4278 ld_vers=`echo $ld_ver | sed -n \
4279 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
4281 ld_vers=`echo $ld_ver | sed -n \
4282 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
4284 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
4285 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
4290 # Determine plugin support.
4291 if echo "$ld_ver" | grep GNU > /dev/null; then
4292 # Require GNU ld or gold 2.21+ for plugin support by default.
4293 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
4295 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
4296 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
4301 ld_ver="$save_ld_ver"
4302 ld_vers_major="$save_ld_vers_major"
4303 ld_vers_minor="$save_ld_vers_minor"
4304 ld_is_gold="$save_ld_is_gold"
4306 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
4307 [Define to the level of your linker's plugin support.])
4308 AC_MSG_RESULT($gcc_cv_lto_plugin)
4310 # Target OS-specific assembler checks.
4312 case "$target_os" in
4314 gcc_GAS_CHECK_FEATURE([-mmacosx-version-min option],
4315 gcc_cv_as_mmacosx_version_min,,
4316 [-mmacosx-version-min=10.1], [.text],,
4317 [AC_DEFINE(HAVE_AS_MMACOSX_VERSION_MIN_OPTION, 1,
4318 [Define if your Mac OS X assembler supports the -mmacos-version-min option.])])
4322 # Target CPU-specific assembler checks.
4326 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,,
4327 [-mabi=lp64], [.text],,,)
4328 if test x$gcc_cv_as_aarch64_mabi = xyes; then
4329 AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
4330 [Define if your assembler supports the -mabi option.])
4332 if test x$with_abi = xilp32; then
4333 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
4334 Upgrade the Assembler.])
4336 if test x"$with_multilib_list" = xdefault; then
4337 TM_MULTILIB_CONFIG=lp64
4339 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
4340 for aarch64_multilib in ${aarch64_multilibs}; do
4341 case ${aarch64_multilib} in
4343 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
4344 Upgrade the Assembler.])
4352 # Check if we have binutils support for relocations types needed by -fpic
4353 gcc_GAS_CHECK_FEATURE([-fpic relocs], gcc_cv_as_aarch64_picreloc,,,
4356 ldr x0, [[x2, #:gotpage_lo15:globalsym]]
4357 ],,[AC_DEFINE(HAVE_AS_SMALL_PIC_RELOCS, 1,
4358 [Define if your assembler supports relocs needed by -fpic.])])
4359 # Enable Branch Target Identification Mechanism and Return Address
4360 # Signing by default.
4361 AC_ARG_ENABLE(standard-branch-protection,
4363 AS_HELP_STRING([--enable-standard-branch-protection],
4364 [enable Branch Target Identification Mechanism and Return Address Signing by default for AArch64])
4365 AS_HELP_STRING([--disable-standard-branch-protection],
4366 [disable Branch Target Identification Mechanism and Return Address Signing by default for AArch64])
4371 tm_defines="${tm_defines} TARGET_ENABLE_BTI=1 TARGET_ENABLE_PAC_RET=1"
4376 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-standard-branch-protection.\
4377 Valid choices are 'yes' and 'no'.])
4382 # Enable default workaround for AArch64 Cortex-A53 erratum 835769.
4383 AC_ARG_ENABLE(fix-cortex-a53-835769,
4385 AS_HELP_STRING([--enable-fix-cortex-a53-835769],
4386 [enable workaround for AArch64 Cortex-A53 erratum 835769 by default])
4387 AS_HELP_STRING([--disable-fix-cortex-a53-835769],
4388 [disable workaround for AArch64 Cortex-A53 erratum 835769 by default])
4393 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1"
4398 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\
4399 Valid choices are 'yes' and 'no'.])
4405 # Enable default workaround for AArch64 Cortex-A53 erratum 843419.
4406 AC_ARG_ENABLE(fix-cortex-a53-843419,
4408 AS_HELP_STRING([--enable-fix-cortex-a53-843419],
4409 [enable workaround for AArch64 Cortex-A53 erratum 843419 by default])
4410 AS_HELP_STRING([--disable-fix-cortex-a53-843419],
4411 [disable workaround for AArch64 Cortex-A53 erratum 843419 by default])
4416 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1"
4421 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\
4422 Valid choices are 'yes' and 'no'.])
4430 # All TARGET_ABI_OSF targets.
4431 alpha*-*-linux* | alpha*-*-*bsd*)
4432 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4433 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
4436 extbl $3, $2, $3 !lituse_bytoff!1
4437 ldq $2, a($29) !literal!1
4438 ldq $4, b($29) !literal!2
4439 ldq_u $3, 0($2) !lituse_base!1
4440 ldq $27, f($29) !literal!5
4441 jsr $26, ($27), f !lituse_jsr!5
4442 ldah $29, 0($26) !gpdisp!3
4443 lda $0, c($29) !gprel
4444 ldah $1, d($29) !gprelhigh
4445 lda $1, d($1) !gprellow
4446 lda $29, 0($29) !gpdisp!3],,
4447 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
4448 [Define if your assembler supports explicit relocations.])])
4449 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
4450 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
4453 ldq $27, a($29) !literal!1
4454 jsr $26, ($27), a !lituse_jsrdirect!1],,
4455 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
4456 [Define if your assembler supports the lituse_jsrdirect relocation.])])
4460 gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax,,
4461 [--mlink-relax], [.text],,
4462 [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1,
4463 [Define if your avr assembler supports --mlink-relax option.])])
4465 gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,,
4467 [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1,
4468 [Define if your avr assembler supports -mrmw option.])])
4470 gcc_GAS_CHECK_FEATURE([__gcc_isr pseudo instruction],
4471 gcc_cv_as_avr_mgccisr,,
4477 [AC_DEFINE(HAVE_AS_AVR_MGCCISR_OPTION, 1,
4478 [Define if your avr assembler supports -mgcc-isr option.])])
4480 # Check how default linker description file implements .rodata for
4481 # avrxmega3 (PR21472). avr-gcc assumes .rodata is *not* loaded to
4482 # RAM so avr-gcc skips __do_copy_data for .rodata objects.
4483 AC_MSG_CHECKING(binutils for avrxmega3 .rodata support)
4484 cat > conftest.s <<EOF
4485 .section .rodata,"a",@progbits
4487 ;; avr-nm should print "... R xxvaryy", not "... D xxvaryy".
4492 AC_TRY_COMMAND([$gcc_cv_as -mmcu=avrxmega3 conftest.s -o conftest.o])
4493 AC_TRY_COMMAND([$gcc_cv_ld -mavrxmega3 conftest.o -o conftest.elf])
4494 AC_TRY_COMMAND([$gcc_cv_nm conftest.elf > conftest.nm])
4495 if test -s conftest.nm
4497 if grep ' R xxvaryy' conftest.nm > /dev/null; then
4499 AC_DEFINE(HAVE_LD_AVR_AVRXMEGA3_RODATA_IN_FLASH, 1,
4500 [Define if your default avr linker script for avrxmega3 leaves .rodata in flash.])
4502 AC_MSG_RESULT(no: avrxmega3 .rodata located in RAM)
4503 echo "$as_me: nm output was" >&AS_MESSAGE_LOG_FD
4504 cat conftest.nm >&AS_MESSAGE_LOG_FD
4505 avr_ld_ver="`$gcc_cv_ld -v | sed -e 's:^.* ::'`"
4506 AC_MSG_WARN([[support for avrxmega3 .rodata in flash needs Binutils 2.29 or higher (have $avr_ld_ver)]])
4509 AC_MSG_RESULT(test failed)
4510 echo "$as_me: failed program was" >&AS_MESSAGE_LOG_FD
4511 cat conftest.s >&AS_MESSAGE_LOG_FD
4512 AC_MSG_WARN([[see `config.log' for details]])
4514 rm -f conftest.s conftest.o conftest.elf conftest.nm
4518 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
4519 gcc_cv_as_cris_no_mul_bug,[2,15,91],
4520 [-no-mul-bug-abort], [.text],,
4521 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
4522 [Define if your assembler supports the -no-mul-bug-abort option.])])
4526 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
4528 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
4529 [Define if your assembler supports -relax option.])])
4531 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
4532 gcc_cv_as_sparc_gotdata_op,,
4539 sethi %gdop_hix22(foo), %g1
4540 xor %g1, %gdop_lox10(foo), %g1
4541 ld [[%l7 + %g1]], %g2, %gdop(foo)],
4542 [if test x$gcc_cv_ld != x \
4543 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4544 if test x$gcc_cv_objdump != x; then
4545 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
4546 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
4547 gcc_cv_as_sparc_gotdata_op=no
4549 gcc_cv_as_sparc_gotdata_op=yes
4554 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
4555 [Define if your assembler and linker support GOTDATA_OP relocs.])])
4557 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
4558 gcc_cv_as_sparc_ua_pcrel,,
4566 .uaword %r_disp32(foo)],
4567 [if test x$gcc_cv_ld != x \
4568 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4569 gcc_cv_as_sparc_ua_pcrel=yes
4572 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
4573 [Define if your assembler and linker support unaligned PC relative relocs.])
4575 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
4576 gcc_cv_as_sparc_ua_pcrel_hidden,,
4581 .uaword %r_disp32(foo)
4582 .byte 0x32, 0x33, 0x34
4587 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4588 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
4589 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
4590 | grep ' 31000000 07323334' > /dev/null 2>&1; then
4591 if $gcc_cv_objdump -R conftest 2> /dev/null \
4592 | grep 'DISP32' > /dev/null 2>&1; then
4595 gcc_cv_as_sparc_ua_pcrel_hidden=yes
4599 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
4600 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
4601 ]) # unaligned pcrel relocs
4603 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
4604 gcc_cv_as_sparc_offsetable_lo10,,
4607 or %g1, %lo(ab) + 12, %g1
4608 or %g1, %lo(ab + 12), %g1],
4609 [if test x$gcc_cv_objdump != x \
4610 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
4611 | grep ' 82106000 82106000' > /dev/null 2>&1; then
4612 gcc_cv_as_sparc_offsetable_lo10=yes
4614 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
4615 [Define if your assembler supports offsetable %lo().])])
4617 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
4618 gcc_cv_as_sparc_fmaf,,
4621 .register %g2, #scratch
4622 .register %g3, #scratch
4624 fmaddd %f0, %f2, %f4, %f6
4625 addxccc %g1, %g2, %g3
4626 fsrl32 %f2, %f4, %f8
4627 fnaddd %f10, %f12, %f14],,
4628 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
4629 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
4631 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
4632 gcc_cv_as_sparc_sparc4,,
4635 .register %g2, #scratch
4636 .register %g3, #scratch
4639 1: cwbneg %g2, %g3, 1f
4642 aes_kexpand0 %f4, %f6, %f8
4643 des_round %f38, %f40, %f42, %f44
4644 camellia_f %f54, %f56, %f58, %f60
4645 kasumi_fi_xor %f46, %f48, %f50, %f52],,
4646 [AC_DEFINE(HAVE_AS_SPARC4, 1,
4647 [Define if your assembler supports SPARC4 instructions.])])
4649 gcc_GAS_CHECK_FEATURE([SPARC5 and VIS 4.0 instructions],
4650 gcc_cv_as_sparc_sparc5,,
4653 .register %g2, #scratch
4654 .register %g3, #scratch
4657 fpadd8 %f0, %f2, %f4],,
4658 [AC_DEFINE(HAVE_AS_SPARC5_VIS4, 1,
4659 [Define if your assembler supports SPARC5 and VIS 4.0 instructions.])])
4661 gcc_GAS_CHECK_FEATURE([SPARC6 instructions],
4662 gcc_cv_as_sparc_sparc6,,
4665 .register %g2, #scratch
4666 .register %g3, #scratch
4669 fpsll64x %f0, %f2, %f4],,
4670 [AC_DEFINE(HAVE_AS_SPARC6, 1,
4671 [Define if your assembler supports SPARC6 instructions.])])
4673 gcc_GAS_CHECK_FEATURE([LEON instructions],
4674 gcc_cv_as_sparc_leon,,
4677 .register %g2, #scratch
4678 .register %g3, #scratch
4682 casa [[%g2]] 0xb, %g3, %g1],,
4683 [AC_DEFINE(HAVE_AS_LEON, 1,
4684 [Define if your assembler supports LEON instructions.])])
4688 i[34567]86-*-* | x86_64-*-*)
4692 # Full C++ conformance when using a shared libstdc++-v3 requires some
4693 # support from the Cygwin DLL, which in more recent versions exports
4694 # wrappers to aid in interposing and redirecting operators new, delete,
4695 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
4696 # are configuring for a version of Cygwin that exports the wrappers.
4697 if test x$host = x$target && test x$host_cpu = xi686; then
4698 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
4700 # Can't check presence of libc functions during cross-compile, so
4701 # we just have to assume we're building for an up-to-date target.
4702 gcc_ac_cygwin_dll_wrappers=yes
4704 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
4705 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
4706 [Define if you want to generate code by default that assumes that the
4707 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
4710 cygwin* | pe | mingw32*)
4711 # Recent binutils allows the three-operand form of ".comm" on PE. This
4712 # definition is used unconditionally to initialise the default state of
4713 # the target option variable that governs usage of the feature.
4714 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
4715 [2,19,52],,[.comm foo,1,32])
4716 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
4717 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
4718 [Define if your assembler supports specifying the alignment
4719 of objects allocated using the GAS .comm command.])
4720 # Used for DWARF 2 in PE
4721 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
4722 gcc_cv_as_ix86_pe_secrel32,
4728 [if test x$gcc_cv_ld != x \
4729 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
4730 gcc_cv_as_ix86_pe_secrel32=yes
4733 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
4734 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
4735 # Test if the assembler supports the extended form of the .section
4736 # directive that specifies section alignment. LTO support uses this,
4737 # but normally only after installation, so we warn but don't fail the
4738 # configure if LTO is enabled but the assembler does not support it.
4739 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
4740 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
4741 if test x$gcc_cv_as_section_has_align != xyes; then
4742 case ",$enable_languages," in
4744 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
4751 gcc_GAS_CHECK_FEATURE([-xbrace_comment], gcc_cv_as_ix86_xbrace_comment,,
4752 [-xbrace_comment=no], [.text],,
4753 [AC_DEFINE(HAVE_AS_XBRACE_COMMENT_OPTION, 1,
4754 [Define if your assembler supports -xbrace_comment option.])])
4756 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
4757 gcc_cv_as_ix86_filds,,,
4758 [filds (%ebp); fists (%ebp)],,
4759 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
4760 [Define if your assembler uses filds and fists mnemonics.])])
4762 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
4763 gcc_cv_as_ix86_fildq,,,
4764 [fildq (%ebp); fistpq (%ebp)],,
4765 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
4766 [Define if your assembler uses fildq and fistq mnemonics.])])
4768 gcc_GAS_CHECK_FEATURE([cmov syntax],
4769 gcc_cv_as_ix86_cmov_sun_syntax,,,
4770 [cmovl.l %edx, %eax],,
4771 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
4772 [Define if your assembler supports the Sun syntax for cmov.])])
4774 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
4775 gcc_cv_as_ix86_ffreep,,,
4777 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
4778 [Define if your assembler supports the ffreep mnemonic.])])
4780 gcc_GAS_CHECK_FEATURE([.quad directive],
4781 gcc_cv_as_ix86_quad,,,
4783 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
4784 [Define if your assembler supports the .quad directive.])])
4786 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
4787 gcc_cv_as_ix86_sahf,,,
4790 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
4791 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
4793 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
4794 gcc_cv_as_ix86_interunit_movq,,,
4798 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
4799 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
4800 [Define if your assembler supports interunit movq mnemonic.])
4802 gcc_GAS_CHECK_FEATURE([hle prefixes],
4803 gcc_cv_as_ix86_hle,,,
4804 [lock xacquire cmpxchg %esi, (%ecx)],,
4805 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
4806 [Define if your assembler supports HLE prefixes.])])
4808 gcc_GAS_CHECK_FEATURE([swap suffix],
4809 gcc_cv_as_ix86_swap,,,
4810 [movl.s %esp, %ebp],,
4811 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
4812 [Define if your assembler supports the swap suffix.])])
4814 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
4815 gcc_cv_as_ix86_diff_sect_delta,,,
4823 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
4824 [Define if your assembler supports the subtraction of symbols in different sections.])])
4826 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
4827 gcc_cv_as_ix86_rep_lock_prefix,,,
4833 lock addl %edi, (%eax,%esi)
4834 lock orl $0, (%esp)],,
4835 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
4836 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
4838 gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
4839 gcc_cv_as_ix86_ud2,,,
4841 [AC_DEFINE(HAVE_AS_IX86_UD2, 1,
4842 [Define if your assembler supports the 'ud2' mnemonic.])])
4844 # Enforce 32-bit output with gas and gld.
4845 if test x$gas = xyes; then
4846 as_ix86_gas_32_opt="--32"
4848 if echo "$ld_ver" | grep GNU > /dev/null; then
4849 if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then
4850 ld_ix86_gld_32_opt="-melf_i386_sol2"
4852 ld_ix86_gld_32_opt="-melf_i386"
4856 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
4857 gcc_cv_as_ix86_tlsgdplt,,
4858 [$as_ix86_gas_32_opt],
4859 [call tls_gd@tlsgdplt],
4860 [if test x$gcc_cv_ld != x \
4861 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4862 gcc_cv_as_ix86_tlsgdplt=yes
4865 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
4866 [Define if your assembler and linker support @tlsgdplt.])])
4869 .section .tdata,"aw'$tls_section_flag'",@progbits
4871 .section .text,"ax",@progbits
4872 call tls_ld@tlsldmplt'
4874 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
4875 gcc_cv_as_ix86_tlsldmplt,,
4876 [$as_ix86_gas_32_opt],
4878 [if test x$gcc_cv_ld != x \
4879 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4880 gcc_cv_as_ix86_tlsldmplt=yes
4883 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT,
4884 [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`],
4885 [Define to 1 if your assembler and linker support @tlsldmplt.])
4888 .section .text,"ax",@progbits
4890 .type _start, @function
4892 leal value@tlsldm(%ebx), %eax
4893 call ___tls_get_addr@plt
4895 .section .tdata,"aw'$tls_section_flag'",@progbits
4896 .type value, @object
4898 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc],
4899 gcc_cv_as_ix86_tlsldm,,
4900 [$as_ix86_gas_32_opt],
4902 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4903 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then
4904 if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \
4905 || dis conftest 2>/dev/null | grep nop > /dev/null; then
4906 gcc_cv_as_ix86_tlsldm=yes
4910 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM,
4911 [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`],
4912 [Define to 1 if your assembler and linker support @tlsldm.])
4923 gcc_GAS_CHECK_FEATURE([R_386_GOT32X reloc],
4924 gcc_cv_as_ix86_got32x,,
4925 [$as_ix86_gas_32_opt],
4927 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4928 && test x$gcc_cv_readelf != x \
4929 && $gcc_cv_readelf --relocs --wide conftest.o 2>&1 \
4930 | grep R_386_GOT32X > /dev/null 2>&1 \
4931 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4932 if $gcc_cv_objdump -dw conftest 2>&1 \
4933 | grep 0xffffff > /dev/null 2>&1; then
4934 gcc_cv_as_ix86_got32x=no
4936 gcc_cv_as_ix86_got32x=yes
4940 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_GOT32X,
4941 [`if test x"$gcc_cv_as_ix86_got32x" = xyes; then echo 1; else echo 0; fi`],
4942 [Define 0/1 if your assembler and linker support @GOT.])
4944 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
4945 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],
4946 [$as_ix86_gas_32_opt],
4952 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
4953 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
4954 [Define true if the assembler supports '.long foo@GOTOFF'.])
4957 .section .text,"ax",@progbits
4959 .type _start, @function
4961 leal ld@tlsldm(%ecx), %eax
4962 call *___tls_get_addr@GOT(%ecx)
4963 leal gd@tlsgd(%ecx), %eax
4964 call *___tls_get_addr@GOT(%ecx)
4966 .section .tdata,"aw'$tls_section_flag'",@progbits
4974 gcc_GAS_CHECK_FEATURE([calling ___tls_get_addr via GOT],
4975 gcc_cv_as_ix86_tls_get_addr_via_got,,
4976 [$as_ix86_gas_32_opt],
4978 [if test x$gcc_cv_ld != x \
4979 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4980 gcc_cv_as_ix86_tls_get_addr_via_got=yes
4983 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLS_GET_ADDR_GOT,
4984 [`if test x"$gcc_cv_as_ix86_tls_get_addr_via_got" = xyes; then echo 1; else echo 0; fi`],
4985 [Define 0/1 if your assembler and linker support calling ___tls_get_addr via GOT.])
4989 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
4990 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
4992 addl r15 = @ltoffx(x#), gp
4994 ld8.mov r16 = [[r15]], x#
4996 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
4997 [Define if your assembler supports ltoffx and ldxmov relocations.])])
5005 gcc_GAS_CHECK_FEATURE([.machine directive support],
5006 gcc_cv_as_machine_directive,,,
5007 [ .machine ppc7400])
5008 if test x$gcc_cv_as_machine_directive != xyes; then
5009 echo "*** This target requires an assembler supporting \".machine\"" >&2
5010 echo you can get it from: https://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
5011 test x$build = x$target && exit 1
5017 *-*-aix*) conftest_s=' .machine "pwr5"
5020 *-*-darwin*) conftest_s=' .text
5022 *) conftest_s=' .machine power4
5027 gcc_GAS_CHECK_FEATURE([mfcr field support],
5028 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
5030 [AC_DEFINE(HAVE_AS_MFCRF, 1,
5031 [Define if your assembler supports mfcr field.])])
5034 *-*-aix*) conftest_s=' .csect .text[[PR]]
5036 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
5040 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
5041 *) conftest_s=' .text
5043 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
5046 gcc_GAS_CHECK_FEATURE([rel16 relocs],
5047 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
5049 [AC_DEFINE(HAVE_AS_REL16, 1,
5050 [Define if your assembler supports R_PPC_REL16 relocs.])])
5053 *-*-aix*) conftest_s=' .machine "pwr7"
5056 *) conftest_s=' .machine power7
5061 gcc_GAS_CHECK_FEATURE([vector-scalar support],
5062 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
5064 [AC_DEFINE(HAVE_AS_VSX, 1,
5065 [Define if your assembler supports VSX instructions.])])
5067 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5068 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
5069 [.gnu_attribute 4,1],,
5070 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5071 [Define if your assembler supports .gnu_attribute.])])
5073 gcc_GAS_CHECK_FEATURE([prologue entry point marker support],
5074 gcc_cv_as_powerpc_entry_markers, [2,26,0],-a64 --fatal-warnings,
5075 [ .reloc .,R_PPC64_ENTRY; nop],,
5076 [AC_DEFINE(HAVE_AS_ENTRY_MARKERS, 1,
5077 [Define if your assembler supports the R_PPC64_ENTRY relocation.])])
5079 gcc_GAS_CHECK_FEATURE([plt sequence marker support],
5080 gcc_cv_as_powerpc_pltseq_markers, [2,31,0],-a32 --fatal-warnings,
5081 [ .reloc .,R_PPC_PLTSEQ; nop],,
5082 [AC_DEFINE(HAVE_AS_PLTSEQ, 1,
5083 [Define if your assembler supports R_PPC*_PLTSEQ relocations.])])
5087 gcc_GAS_CHECK_FEATURE([AIX .ref support],
5088 gcc_cv_as_aix_ref, [2,21,0],,
5089 [ .csect stuff[[rw]]
5095 [AC_DEFINE(HAVE_AS_REF, 1,
5096 [Define if your assembler supports .ref])])
5098 gcc_GAS_CHECK_FEATURE([AIX DWARF location lists section support],
5099 gcc_cv_as_aix_dwloc, [2,21,0],,
5104 [AC_DEFINE(HAVE_XCOFF_DWARF_EXTRAS, 1,
5105 [Define if your assembler supports AIX debug frame section label reference.])])
5111 gcc_GAS_CHECK_FEATURE([explicit relocation support],
5112 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
5113 [ lw $4,%gp_rel(foo)($4)],,
5114 [if test x$target_cpu_default = x
5115 then target_cpu_default=MASK_EXPLICIT_RELOCS
5116 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
5119 gcc_GAS_CHECK_FEATURE([-mno-shared support],
5120 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
5121 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
5122 [Define if the assembler understands -mno-shared.])])
5124 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5125 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
5126 [.gnu_attribute 4,1],,
5127 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5128 [Define if your assembler supports .gnu_attribute.])])
5130 gcc_GAS_CHECK_FEATURE([.module support],
5131 gcc_cv_as_mips_dot_module,,[-32],
5134 [AC_DEFINE(HAVE_AS_DOT_MODULE, 1,
5135 [Define if your assembler supports .module.])])
5136 if test x$gcc_cv_as_mips_dot_module = xno \
5137 && test x$with_fp_32 != x; then
5139 [Requesting --with-fp-32= requires assembler support for .module.])
5142 gcc_GAS_CHECK_FEATURE([.micromips support],
5143 gcc_cv_as_micromips_support,,[--fatal-warnings],
5145 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
5146 [Define if your assembler supports the .set micromips directive])])
5148 gcc_GAS_CHECK_FEATURE([.dtprelword support],
5149 gcc_cv_as_mips_dtprelword, [2,18,0],,
5150 [.section .tdata,"awT",@progbits
5154 .dtprelword x+0x8000],,
5155 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
5156 [Define if your assembler supports .dtprelword.])])
5158 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
5159 gcc_cv_as_mips_dspr1_mult,,,
5169 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
5170 [Define if your assembler supports DSPR1 mult.])])
5172 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
5173 gcc_cv_as_ld_jalr_reloc=no
5174 if test $gcc_cv_as_mips_explicit_relocs = yes; then
5175 if test $in_tree_ld = yes ; then
5176 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
5177 && test $in_tree_ld_is_elf = yes; then
5178 gcc_cv_as_ld_jalr_reloc=yes
5180 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
5181 echo ' .ent x' > conftest.s
5182 echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s
5183 echo ' lw $25,%call16(y)($28)' >> conftest.s
5184 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
5185 echo '1: jalr $25' >> conftest.s
5186 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
5187 echo '1: jalr $25' >> conftest.s
5188 echo ' .end x' >> conftest.s
5189 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
5190 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
5191 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
5192 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
5193 gcc_cv_as_ld_jalr_reloc=yes
5199 if test $gcc_cv_as_ld_jalr_reloc = yes; then
5200 if test x$target_cpu_default = x; then
5201 target_cpu_default=MASK_RELAX_PIC_CALLS
5203 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
5206 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
5208 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
5209 [gcc_cv_ld_mips_personality_relaxation],
5210 [gcc_cv_ld_mips_personality_relaxation=no
5211 if test $in_tree_ld = yes ; then
5212 if test "$gcc_cv_gld_major_version" -eq 2 \
5213 -a "$gcc_cv_gld_minor_version" -ge 21 \
5214 -o "$gcc_cv_gld_major_version" -gt 2; then
5215 gcc_cv_ld_mips_personality_relaxation=yes
5217 elif test x$gcc_cv_as != x \
5218 -a x$gcc_cv_ld != x \
5219 -a x$gcc_cv_readelf != x ; then
5220 cat > conftest.s <<EOF
5222 .cfi_personality 0x80,indirect_ptr
5229 .section .data,"aw",@progbits
5233 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
5234 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
5235 if $gcc_cv_readelf -d conftest 2>&1 \
5236 | grep TEXTREL > /dev/null 2>&1; then
5238 elif $gcc_cv_readelf --relocs conftest 2>&1 \
5239 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
5242 gcc_cv_ld_mips_personality_relaxation=yes
5246 rm -f conftest.s conftest.o conftest])
5247 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
5248 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
5249 [Define if your linker can relax absolute .eh_frame personality
5250 pointers into PC-relative form.])
5253 gcc_GAS_CHECK_FEATURE([-mnan= support],
5254 gcc_cv_as_mips_nan,,
5256 [AC_DEFINE(HAVE_AS_NAN, 1,
5257 [Define if the assembler understands -mnan=.])])
5258 if test x$gcc_cv_as_mips_nan = xno \
5259 && test x$with_nan != x; then
5261 [Requesting --with-nan= requires assembler support for -mnan=])
5265 # Earlier GAS versions generically support .gnu_attribute, but the
5266 # msp430 assembler will not do anything with it.
5267 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5268 gcc_cv_as_msp430_gnu_attribute, [2,33,50],,
5269 [.gnu_attribute 4,1],,
5270 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5271 [Define if your assembler supports .gnu_attribute.])])
5272 gcc_GAS_CHECK_FEATURE([.mspabi_attribute support],
5273 gcc_cv_as_msp430_mspabi_attribute, [2,33,50],,
5274 [.mspabi_attribute 4,2],,
5275 [AC_DEFINE(HAVE_AS_MSPABI_ATTRIBUTE, 1,
5276 [Define if your assembler supports .mspabi_attribute.])])
5277 if test x$enable_newlib_nano_formatted_io = xyes; then
5278 AC_DEFINE(HAVE_NEWLIB_NANO_FORMATTED_IO, 1, [Define if GCC has been
5279 configured with --enable-newlib-nano-formatted-io.])
5283 # Versions 2.33 and earlier lacked support for the %gotoff relocation
5284 # syntax that is documented in the ABI specification.
5285 gcc_GAS_CHECK_FEATURE([support for %gotoff relocations in constant data],
5286 gcc_cv_as_nios2_gotoff_relocation,,,
5289 .long %gotoff(foo)],,
5290 [AC_DEFINE(HAVE_AS_NIOS2_GOTOFF_RELOCATION, 1,
5291 [Define if your assembler supports %gotoff relocation syntax.])])
5294 gcc_GAS_CHECK_FEATURE([.attribute support],
5295 gcc_cv_as_riscv_attribute, [2,32,0],,
5296 [.attribute stack_align,4],,
5297 [AC_DEFINE(HAVE_AS_RISCV_ATTRIBUTE, 1,
5298 [Define if your assembler supports .attribute.])])
5299 gcc_GAS_CHECK_FEATURE([-misa-spec= support],
5300 gcc_cv_as_riscv_isa_spec,,
5302 [AC_DEFINE(HAVE_AS_MISA_SPEC, 1,
5303 [Define if the assembler understands -misa-spec=.])])
5304 gcc_GAS_CHECK_FEATURE([-march=rv32i_zifencei support],
5305 gcc_cv_as_riscv_march_zifencei,,
5306 [-march=rv32i_zifencei],,,
5307 [AC_DEFINE(HAVE_AS_MARCH_ZIFENCEI, 1,
5308 [Define if the assembler understands -march=rv*_zifencei.])])
5311 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5312 gcc_cv_as_s390_gnu_attribute, [2,18,0],,
5313 [.gnu_attribute 8,1],,
5314 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5315 [Define if your assembler supports .gnu_attribute.])])
5316 gcc_GAS_CHECK_FEATURE([.machine and .machinemode support],
5317 gcc_cv_as_s390_machine_machinemode, [2,24,0],,
5322 [AC_DEFINE(HAVE_AS_MACHINE_MACHINEMODE, 1,
5323 [Define if your assembler supports .machine and .machinemode.])])
5324 gcc_GAS_CHECK_FEATURE([architecture modifiers support],
5325 gcc_cv_as_s390_architecture_modifiers, [2,26,0],,
5326 [ .machine z13+vx ],,
5327 [AC_DEFINE(HAVE_AS_ARCHITECTURE_MODIFIERS, 1,
5328 [Define if your assembler supports architecture modifiers.])])
5329 gcc_GAS_CHECK_FEATURE([vector load/store alignment hints],
5330 gcc_cv_as_s390_vector_loadstore_alignment_hints, [2,31,0],,
5331 [ vl %v24,0(%r15),3 ],,
5332 [AC_DEFINE(HAVE_AS_VECTOR_LOADSTORE_ALIGNMENT_HINTS, 1,
5333 [Define if your assembler supports vl/vst/vlm/vstm with an optional alignment hint argument.])])
5334 gcc_GAS_CHECK_FEATURE([vector load/store alignment hints on z13],
5335 gcc_cv_as_s390_vector_loadstore_alignment_hints_on_z13,, [-mzarch -march=z13],
5336 [ vl %v24,0(%r15),3 ],,
5337 [AC_DEFINE(HAVE_AS_VECTOR_LOADSTORE_ALIGNMENT_HINTS_ON_Z13, 1,
5338 [Define if your assembler supports vl/vst/vlm/vstm with an optional alignment hint argument on z13.])])
5343 # Mips and HP-UX need the GNU assembler.
5344 # Linux on IA64 might be able to use the Intel assembler.
5347 mips*-*-* | *-*-hpux* )
5348 if test x$gas_flag = xyes \
5349 || test x"$host" != x"$build" \
5350 || test ! -x "$gcc_cv_as" \
5351 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
5354 echo "*** This configuration requires the GNU assembler" >&2
5360 # ??? Not all targets support dwarf2 debug_line, even within a version
5361 # of gas. Moreover, we need to emit a valid instruction to trigger any
5362 # info to the output file. So, as supported targets are added to gas 2.11,
5363 # add some instruction here to (also) show we expect this might work.
5364 # ??? Once 2.11 is released, probably need to add first known working
5365 # version to the per-target configury.
5367 aarch64 | alpha | arc | arm | avr | bfin | cris | csky | i386 | m32c | m68k \
5368 | microblaze | mips | nds32 | nios2 | pa | riscv | rs6000 | score | sparc \
5369 | tilegx | tilepro | visium | xstormy16 | xtensa)
5379 if test x"$insn" != x; then
5381 .file 1 \"conftest.s\"
5384 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
5385 gcc_cv_as_dwarf2_debug_line,
5386 [elf,2,11,0],, [$conftest_s],
5387 [if test x$gcc_cv_objdump != x \
5388 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
5389 | grep debug_line > /dev/null 2>&1; then
5390 gcc_cv_as_dwarf2_debug_line=yes
5391 elif test x$gcc_cv_otool != x \
5392 && $gcc_cv_otool -l conftest.o 2> /dev/null \
5393 | grep debug_line > /dev/null 2>&1; then
5394 gcc_cv_as_dwarf2_debug_line=yes
5397 # The .debug_line file table must be in the exact order that
5398 # we specified the files, since these indices are also used
5399 # by DW_AT_decl_file. Approximate this test by testing if
5400 # the assembler bitches if the same index is assigned twice.
5401 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
5402 gcc_cv_as_dwarf2_file_buggy,,,
5406 if test $gcc_cv_as_dwarf2_debug_line = yes \
5407 && test $gcc_cv_as_dwarf2_file_buggy = no; then
5408 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
5409 [Define if your assembler supports dwarf2 .file/.loc directives,
5410 and preserves file table indices exactly as given.])
5412 if test $gcc_cv_as_leb128 = yes; then
5414 .file 1 \"conftest.s\"
5415 .loc 1 3 0 view .LVU1
5421 gcc_GAS_CHECK_FEATURE([dwarf2 debug_view support],
5422 gcc_cv_as_dwarf2_debug_view,
5423 [elf,2,27,0],,[$conftest_s],,
5424 [AC_DEFINE(HAVE_AS_DWARF2_DEBUG_VIEW, 1,
5425 [Define if your assembler supports views in dwarf2 .loc directives.])])
5429 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
5430 gcc_cv_as_gdwarf2_flag,
5431 [elf,2,11,0], [--gdwarf2], [$insn],,
5432 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
5433 [Define if your assembler supports the --gdwarf2 option.])])
5435 gcc_GAS_CHECK_FEATURE([--gdwarf-5 option],
5436 gcc_cv_as_gdwarf_5_flag,
5437 [elf,2,36,0], [--gdwarf-5], [$insn],
5438 [if test x$gcc_cv_readelf != x \
5439 && $gcc_cv_readelf -wi conftest.o 2>&1 \
5440 | grep DW_TAG_compile_unit > /dev/null 2>&1; then
5441 gcc_cv_as_gdwarf_5_flag=yes;
5442 fi],[AC_DEFINE(HAVE_AS_GDWARF_5_DEBUG_FLAG, 1,
5443 [Define if your assembler supports the --gdwarf-5 option.])])
5445 dwarf4_debug_info_size=0x46
5446 dwarf4_high_pc_form=7
5447 dwarf4_debug_aranges_size=0x2c
5449 for dwarf4_addr_size in 8 4; do
5456 .type foo, %function
5465 .section .debug_info,\"\",%progbits
5467 .4byte $dwarf4_debug_info_size
5469 .4byte .Ldebug_abbrev0
5470 .byte 0x$dwarf4_addr_size
5472 .ascii \"GNU C17\\0\"
5476 .${dwarf4_addr_size}byte .Ltext0
5477 .${dwarf4_addr_size}byte .Letext0-.Ltext0
5478 .4byte .Ldebug_line0
5484 .${dwarf4_addr_size}byte .LFB0
5485 .${dwarf4_addr_size}byte .LFE0-.LFB0
5489 .section .debug_abbrev,\"\",%progbits
5505 .byte 0x$dwarf4_high_pc_form
5526 .byte 0x$dwarf4_high_pc_form
5532 .section .debug_aranges,\"\",%progbits
5533 .4byte $dwarf4_debug_aranges_size
5535 .4byte .Ldebug_info0
5540 .${dwarf4_addr_size}byte .Ltext0
5541 .${dwarf4_addr_size}byte .Letext0-.Ltext0
5542 .${dwarf4_addr_size}byte 0
5543 .${dwarf4_addr_size}byte 0
5544 .section .debug_line,\"\",%progbits
5546 .4byte .LELT0-.LSLT0
5549 .4byte .LELTP0-.LASLTP0
5577 .byte 0x$dwarf4_line_sz
5579 .${dwarf4_addr_size}byte .LM1
5584 .byte 0x$dwarf4_line_sz
5586 .${dwarf4_addr_size}byte .LM2
5591 .byte 0x$dwarf4_line_sz
5593 .${dwarf4_addr_size}byte .Letext0
5598 .section .debug_str,\"\",%progbits
5602 if test $dwarf4_addr_size = 4; then
5603 gcc_GAS_CHECK_FEATURE([assembly of compiler generated 32-bit .debug_line],
5604 gcc_cv_as_debug_line_32_flag,
5605 [elf,2,36,0], [], [$conftest_s],,
5606 [dwarf4_success=yes])
5608 gcc_GAS_CHECK_FEATURE([assembly of compiler generated 64-bit .debug_line],
5609 gcc_cv_as_debug_line_64_flag,
5610 [elf,2,36,0], [], [$conftest_s],,
5611 [dwarf4_success=yes])
5613 if test $dwarf4_success = yes; then
5615 gcc_GAS_CHECK_FEATURE([--gdwarf-4 not refusing compiler generated .debug_line],
5616 gcc_cv_as_dwarf_4_debug_line_flag,
5617 [elf,2,36,0], [--gdwarf-4], [$conftest_s],,
5618 [dwarf4_success=yes])
5621 dwarf4_debug_info_size=0x36
5622 dwarf4_high_pc_form=6
5623 dwarf4_debug_aranges_size=0x1c
5627 if test $dwarf4_success = yes; then
5645 gcc_GAS_CHECK_FEATURE([--gdwarf-4 with the APP marker],
5646 gcc_cv_as_dwarf_4_app_flag,,
5647 [--gdwarf-4], [$conftest_s],, [dwarf4_success=yes])
5650 if test $dwarf4_success = yes; then
5654 .type foo, %function
5660 gcc_GAS_CHECK_FEATURE([working --gdwarf-4/--gdwarf-5 for all sources],
5661 gcc_cv_as_working_gdwarf_n_flag,,
5665 if test x$gcc_cv_readelf != x \
5666 && $gcc_cv_readelf -w conftest.o 2>&1 \
5667 | grep conftest.s > /dev/null 2>&1; then
5668 gcc_cv_as_working_gdwarf_n_flag=no
5670 gcc_cv_as_working_gdwarf_n_flag=yes
5672 changequote([,])dnl])
5673 if test $gcc_cv_as_working_gdwarf_n_flag = yes; then
5674 AC_DEFINE(HAVE_AS_WORKING_DWARF_N_FLAG, 1,
5675 [Define if your assembler supports --gdwarf-4/--gdwarf-5 even with
5676 compiler generated .debug_line.])
5680 gcc_GAS_CHECK_FEATURE([--gstabs option],
5681 gcc_cv_as_gstabs_flag,
5682 [elf,2,11,0], [--gstabs], [$insn],,
5683 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
5684 [Define if your assembler supports the --gstabs option.])])
5686 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
5687 gcc_cv_as_debug_prefix_map_flag,
5688 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
5689 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
5690 [Define if your assembler supports the --debug-prefix-map option.])])
5693 gcc_GAS_CHECK_FEATURE([compressed debug sections],
5694 gcc_cv_as_compress_debug,,,,
5695 [# gas compiled without zlib cannot compress debug sections and warns
5696 # about it, but still exits successfully. So check for this, too.
5697 if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null
5699 gcc_cv_as_compress_debug=0
5700 # Since binutils 2.26, gas supports --compress-debug-sections=type,
5701 # defaulting to the ELF gABI format.
5702 elif $gcc_cv_as --compress-debug-sections=zlib-gnu -o conftest.o conftest.s > /dev/null 2>&1
5704 gcc_cv_as_compress_debug=2
5705 gcc_cv_as_compress_debug_option="--compress-debug-sections"
5706 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
5707 # Before binutils 2.26, gas only supported --compress-debug-options and
5708 # emitted the traditional GNU format.
5709 elif $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s > /dev/null 2>&1
5711 gcc_cv_as_compress_debug=1
5712 gcc_cv_as_compress_debug_option="--compress-debug-sections"
5713 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
5715 gcc_cv_as_compress_debug=0
5717 AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug,
5718 [Define to the level of your assembler's compressed debug section support.])
5719 AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option",
5720 [Define to the assembler option to enable compressed debug sections.])
5721 AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option",
5722 [Define to the assembler option to disable compressed debug sections.])
5724 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
5727 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
5728 [Define if your assembler supports .lcomm with an alignment field.])])
5730 if test x$with_sysroot = x && test x$host = x$target \
5731 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
5732 && test "$prefix" != "NONE"; then
5733 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
5734 [Define to PREFIX/include if cpp should also search that directory.])
5737 # Determine the version of glibc, if any, used on the target.
5738 AC_MSG_CHECKING([for target glibc version])
5739 AC_ARG_WITH([glibc-version],
5740 [AS_HELP_STRING([--with-glibc-version=M.N],
5741 [assume GCC used with glibc version M.N or later])], [
5742 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
5743 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
5744 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
5746 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
5748 glibc_version_major=0
5749 glibc_version_minor=0
5750 [if test -f $target_header_dir/features.h \
5751 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
5752 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
5753 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
5754 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
5756 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
5757 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MAJOR], [$glibc_version_major],
5758 [GNU C Library major version number used on the target, or 0.])
5759 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MINOR], [$glibc_version_minor],
5760 [GNU C Library minor version number used on the target, or 0.])
5762 AC_ARG_ENABLE(gnu-unique-object,
5763 [AS_HELP_STRING([--enable-gnu-unique-object],
5764 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
5765 [case $enable_gnu_unique_object in
5767 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
5768 Valid choices are 'yes' and 'no'.]) ;;
5770 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
5772 [.type foo, '$target_type_format_char'gnu_unique_object],,
5773 # We need to unquote above to to use the definition from config.gcc.
5774 # Also check for ld.so support, i.e. glibc 2.11 or higher.
5775 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
5777 if test x$enable_gnu_unique_object = xyes; then
5778 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
5779 [Define if your assembler supports @gnu_unique_object.])
5782 AC_CACHE_CHECK([assembler for tolerance to line number 0],
5783 [gcc_cv_as_line_zero],
5784 [gcc_cv_as_line_zero=no
5785 if test $in_tree_gas = yes; then
5786 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
5787 elif test "x$gcc_cv_as" != x; then
5788 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
5789 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
5790 test "x`cat conftest.out`" = x
5792 gcc_cv_as_line_zero=yes
5794 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
5795 cat conftest.s >&AS_MESSAGE_LOG_FD
5796 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
5797 cat conftest.out >&AS_MESSAGE_LOG_FD
5799 rm -f conftest.o conftest.s conftest.out
5801 if test "x$gcc_cv_as_line_zero" = xyes; then
5802 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
5803 [Define if the assembler won't complain about a line such as # 0 "" 2.])
5806 AC_MSG_CHECKING(support for thin archives)
5807 thin_archive_support=no
5808 echo 'int main (void) { return 0; }' > conftest.c
5809 if ($AR --version | sed 1q | grep "GNU ar" \
5810 && $CC $CFLAGS -c conftest.c \
5811 && $AR rcT conftest.a conftest.o \
5812 && $CC $CFLAGS $LDFLAGS -o conftest conftest.a) >/dev/null 2>&1; then
5813 thin_archive_support=yes
5815 rm -f conftest.c conftest.o conftest.a conftest
5816 AC_MSG_RESULT($thin_archive_support)
5817 AC_SUBST(thin_archive_support)
5819 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
5820 gcc_cv_ld_eh_frame_hdr=no
5821 if test $in_tree_ld = yes ; then
5822 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
5823 && test $in_tree_ld_is_elf = yes; then
5824 gcc_cv_ld_eh_frame_hdr=yes
5826 elif test x$gcc_cv_ld != x; then
5827 if echo "$ld_ver" | grep GNU > /dev/null; then
5828 # Check if linker supports --eh-frame-hdr option
5829 if $gcc_cv_ld --help 2>&1 | grep eh-frame-hdr > /dev/null; then
5830 gcc_cv_ld_eh_frame_hdr=yes
5835 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
5836 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
5837 gcc_cv_ld_eh_frame_hdr=yes
5843 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
5844 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
5845 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
5846 [Define if your linker supports .eh_frame_hdr.])
5848 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
5850 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
5851 gcc_cv_ld_eh_frame_ciev3=no
5852 if test $in_tree_ld = yes ; then
5853 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5854 && test $in_tree_ld_is_elf = yes; then
5855 gcc_cv_ld_eh_frame_ciev3=yes
5857 elif test x$gcc_cv_ld != x; then
5858 if echo "$ld_ver" | grep GNU > /dev/null; then
5859 gcc_cv_ld_eh_frame_ciev3=yes
5860 if test 0"$ld_date" -lt 20040513; then
5861 if test -n "$ld_date"; then
5862 # If there was date string, but was earlier than 2004-05-13, fail
5863 gcc_cv_ld_eh_frame_ciev3=no
5864 elif test "$ld_vers_major" -lt 2; then
5865 gcc_cv_ld_eh_frame_ciev3=no
5866 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
5867 gcc_cv_ld_eh_frame_ciev3=no
5873 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
5874 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
5875 gcc_cv_ld_eh_frame_ciev3=yes
5881 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
5882 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
5883 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
5884 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
5886 AC_MSG_CHECKING(linker position independent executable support)
5888 if test $in_tree_ld = yes ; then
5890 # Full PIE support on Solaris was only introduced in gld 2.26.
5891 *-*-solaris2*) gcc_gld_pie_min_version=26 ;;
5892 *) gcc_gld_pie_min_version=15 ;;
5894 if test "$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 \
5895 && test $in_tree_ld_is_elf = yes; then
5898 elif test x$gcc_cv_ld != x; then
5899 # Check if linker supports -pie option
5900 if $gcc_cv_ld --help 2>&1 | grep -- -pie > /dev/null; then
5904 if echo "$ld_ver" | grep GNU > /dev/null \
5905 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
5912 *-*-solaris2.1[[1-9]]*)
5913 # Solaris 11.3 added PIE support.
5914 if $gcc_cv_ld -z help 2>&1 | grep -- type.*pie > /dev/null; then
5921 if test x"$gcc_cv_ld_pie" = xyes; then
5922 AC_DEFINE(HAVE_LD_PIE, 1,
5923 [Define if your linker supports PIE option.])
5925 AC_MSG_RESULT($gcc_cv_ld_pie)
5927 AC_MSG_CHECKING(linker PIE support with copy reloc)
5928 gcc_cv_ld_pie_copyreloc=no
5929 if test $gcc_cv_ld_pie = yes ; then
5930 if test $in_tree_ld = yes ; then
5931 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
5932 gcc_cv_ld_pie_copyreloc=yes
5934 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5935 # Check if linker supports -pie option with copy reloc
5937 i?86-*-linux* | x86_64-*-linux*)
5938 cat > conftest1.s <<EOF
5941 .type a_glob, @object
5946 cat > conftest2.s <<EOF
5949 .type main, @function
5951 movl %eax, a_glob(%rip)
5954 .section .data.rel,"aw",@progbits
5959 if $gcc_cv_as --64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5960 && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \
5961 && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5962 && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then
5963 gcc_cv_ld_pie_copyreloc=yes
5965 rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s
5970 AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC,
5971 [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`],
5972 [Define 0/1 if your linker supports -pie option with copy reloc.])
5973 AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc)
5975 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
5976 gcc_cv_ld_eh_gc_sections=no
5977 if test $in_tree_ld = yes ; then
5978 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
5979 && test $in_tree_ld_is_elf = yes; then
5980 gcc_cv_ld_eh_gc_sections=yes
5982 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
5983 cat > conftest.s <<EOF
5986 .type _start, @function
5989 .size _start, .-_start
5990 .section .text.foo,"ax",@progbits
5991 .type foo, @function
5995 .section .gcc_except_table.foo,"a",@progbits
5998 .section .eh_frame,"a",@progbits
6001 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
6002 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
6003 | grep "gc-sections option ignored" > /dev/null; then
6004 gcc_cv_ld_eh_gc_sections=no
6005 elif $gcc_cv_objdump -h conftest 2> /dev/null \
6006 | grep gcc_except_table > /dev/null; then
6007 gcc_cv_ld_eh_gc_sections=yes
6008 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
6009 if test x$gcc_cv_as_comdat_group != xyes; then
6010 gcc_cv_ld_eh_gc_sections=no
6011 cat > conftest.s <<EOF
6014 .type _start, @function
6017 .size _start, .-_start
6018 .section .gnu.linkonce.t.foo,"ax",@progbits
6019 .type foo, @function
6023 .section .gcc_except_table.foo,"a",@progbits
6026 .section .eh_frame,"a",@progbits
6029 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
6030 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
6031 | grep "gc-sections option ignored" > /dev/null; then
6032 gcc_cv_ld_eh_gc_sections=no
6033 elif $gcc_cv_objdump -h conftest 2> /dev/null \
6034 | grep gcc_except_table > /dev/null; then
6035 gcc_cv_ld_eh_gc_sections=yes
6041 rm -f conftest.s conftest.o conftest
6045 # ??? This apparently exposes a binutils bug with PC-relative relocations.
6046 gcc_cv_ld_eh_gc_sections=no
6049 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
6050 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
6051 [Define if your linker supports garbage collection of
6052 sections in presence of EH frames.])
6054 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
6056 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
6057 gcc_cv_ld_eh_gc_sections_bug=no
6058 if test $in_tree_ld = yes ; then
6059 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
6060 && test $in_tree_ld_is_elf = yes; then
6061 gcc_cv_ld_eh_gc_sections_bug=yes
6063 elif test x$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
6064 gcc_cv_ld_eh_gc_sections_bug=yes
6065 cat > conftest.s <<EOF
6068 .type _start, @function
6071 .size _start, .-_start
6072 .section .text.startup.foo,"ax",@progbits
6073 .type foo, @function
6077 .section .gcc_except_table.foo,"a",@progbits
6080 .section .eh_frame,"a",@progbits
6083 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
6084 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
6085 | grep "gc-sections option ignored" > /dev/null; then
6087 elif $gcc_cv_objdump -h conftest 2> /dev/null \
6088 | grep gcc_except_table > /dev/null; then
6089 gcc_cv_ld_eh_gc_sections_bug=no
6092 rm -f conftest.s conftest.o conftest
6094 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
6095 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
6096 [Define if your linker has buggy garbage collection of
6097 sections support when .text.startup.foo like sections are used.])
6099 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
6101 AC_MSG_CHECKING(linker for compressed debug sections)
6102 # gold/gld support compressed debug sections since binutils 2.19/2.21
6103 # In binutils 2.26, gld gained support for the ELF gABI format.
6104 if test $in_tree_ld = yes ; then
6105 gcc_cv_ld_compress_debug=0
6106 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 19 -o "$gcc_cv_gld_major_version" -gt 2 \
6107 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = yes; then
6108 gcc_cv_ld_compress_debug=2
6109 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
6110 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 26 -o "$gcc_cv_gld_major_version" -gt 2 \
6111 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = no; then
6112 gcc_cv_ld_compress_debug=3
6113 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
6114 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2 \
6115 && test $in_tree_ld_is_elf = yes; then
6116 gcc_cv_ld_compress_debug=1
6118 elif echo "$ld_ver" | grep GNU > /dev/null; then
6119 if test "$ld_vers_major" -lt 2 \
6120 || test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 21; then
6121 gcc_cv_ld_compress_debug=0
6122 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
6123 gcc_cv_ld_compress_debug=1
6125 gcc_cv_ld_compress_debug=3
6126 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
6128 if test $ld_is_gold = yes; then
6129 gcc_cv_ld_compress_debug=2
6130 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
6136 # Introduced in Solaris 11.2.
6137 if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then
6138 gcc_cv_ld_compress_debug=3
6139 gcc_cv_ld_compress_debug_option="-z compress-sections"
6141 gcc_cv_ld_compress_debug=0
6145 # Assume linkers other than GNU ld don't support compessed debug
6147 gcc_cv_ld_compress_debug=0
6152 AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug,
6153 [Define to the level of your linker's compressed debug section support.])
6154 AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option",
6155 [Define to the linker option to enable compressed debug sections.])
6156 AC_MSG_RESULT($gcc_cv_ld_compress_debug)
6158 if test x"$ld64_flag" = x"yes"; then
6160 # Set defaults for possibly untestable items.
6161 gcc_cv_ld64_export_dynamic=0
6163 if test "$build" = "$host"; then
6169 # On Darwin, because of FAT library support, it is often possible to execute
6170 # exes from compatible archs even when the host differs from the build system.
6171 case "$build","$host" in
6172 x86_64-*-darwin*,i?86-*-darwin* | powerpc64*-*-darwin*,powerpc*-*-darwin*)
6177 # If the configurer specified a minimum ld64 version to be supported, then use
6178 # that to determine feature support.
6179 if test x"${gcc_cv_ld64_version}" != x; then
6180 AC_MSG_CHECKING(ld64 specified version)
6181 gcc_cv_ld64_major=`echo "$gcc_cv_ld64_version" | sed -e 's/\..*//'`
6182 AC_MSG_RESULT($gcc_cv_ld64_major)
6183 if test "$gcc_cv_ld64_major" -ge 236; then
6184 gcc_cv_ld64_export_dynamic=1
6186 elif test -x "$gcc_cv_ld" -a "$darwin_try_test" -eq 1; then
6187 # If the version was not specified, try to find it.
6188 AC_MSG_CHECKING(linker version)
6189 if test x"${gcc_cv_ld64_version}" = x; then
6190 gcc_cv_ld64_version=`$gcc_cv_ld -v 2>&1 | grep ld64 | sed s/.*ld64-// | awk '{print $1}'`
6192 AC_MSG_RESULT($gcc_cv_ld64_version)
6194 AC_MSG_CHECKING(linker for -export_dynamic support)
6195 gcc_cv_ld64_export_dynamic=1
6196 if $gcc_cv_ld -export_dynamic < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then
6197 gcc_cv_ld64_export_dynamic=0
6199 AC_MSG_RESULT($gcc_cv_ld64_export_dynamic)
6202 if test x"${gcc_cv_ld64_version}" != x; then
6203 AC_DEFINE_UNQUOTED(LD64_VERSION, "${gcc_cv_ld64_version}",
6204 [Define to ld64 version.])
6207 AC_DEFINE_UNQUOTED(LD64_HAS_EXPORT_DYNAMIC, $gcc_cv_ld64_export_dynamic,
6208 [Define to 1 if ld64 supports '-export_dynamic'.])
6212 win32 | pe | cygwin* | mingw32*)
6213 AC_MSG_CHECKING(broken PE linker dwarf5 support)
6214 gcc_cv_ld_broken_pe_dwarf5=yes
6215 if test $in_tree_ld = yes ; then
6216 if grep -q '\.debug_loclists.*BLOCK.*__section_alignment__.*NOLOAD.*:' \
6217 $gcc_cv_ld_gld_srcdir/scripttempl/pe*.sc \
6218 && grep -q '\.debug_rnglists.*BLOCK.*__section_alignment__.*NOLOAD.*:' \
6219 $gcc_cv_ld_gld_srcdir/scripttempl/pe*.sc; then
6220 gcc_cv_ld_broken_pe_dwarf5=no
6223 if $gcc_cv_ld --verbose 2>&1 | grep -q '\.debug_loclists.*BLOCK.*__section_alignment__.*NOLOAD.*:' \
6224 && $gcc_cv_ld --verbose 2>&1 | grep -q '\.debug_rnglists.*BLOCK.*__section_alignment__.*NOLOAD.*:'; then
6225 gcc_cv_ld_broken_pe_dwarf5=no
6228 if test x$gcc_cv_ld_broken_pe_dwarf5 = xyes; then
6229 AC_DEFINE(HAVE_LD_BROKEN_PE_DWARF5, 1,
6230 [Define if the PE linker has broken DWARF 5 support.])
6232 AC_MSG_RESULT($gcc_cv_ld_broken_pe_dwarf5)
6240 AC_CACHE_CHECK(linker --as-needed support,
6241 gcc_cv_ld_as_needed,
6242 [gcc_cv_ld_as_needed=no
6243 gcc_cv_ld_as_needed_option='--as-needed'
6244 gcc_cv_ld_no_as_needed_option='--no-as-needed'
6245 if test $in_tree_ld = yes ; then
6246 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
6247 && test $in_tree_ld_is_elf = yes; then
6248 gcc_cv_ld_as_needed=yes
6249 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 28; then
6250 gcc_cv_ld_as_needed_option='--push-state --as-needed'
6251 gcc_cv_ld_no_as_needed_option='--pop-state'
6254 elif test x$gcc_cv_ld != x; then
6255 # Check if linker supports --as-needed and --no-as-needed options
6256 if $gcc_cv_ld --help 2>&1 | grep as-needed > /dev/null; then
6257 gcc_cv_ld_as_needed=yes
6258 if $gcc_cv_ld --help 2>&1 | grep push-state > /dev/null \
6259 && $gcc_cv_ld --help 2>&1 | grep pop-state > /dev/null \
6260 && echo "$ld_ver" | grep GNU > /dev/null \
6261 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 28; then
6262 # Use these options only when both ld.bfd and ld.gold support
6263 # --push-state/--pop-state, which unfortunately wasn't added
6265 gcc_cv_ld_as_needed_option='--push-state --as-needed'
6266 gcc_cv_ld_no_as_needed_option='--pop-state'
6269 case "$target:$gnu_ld" in
6271 # Solaris 2 ld always supports -z ignore/-z record. Prefer the native
6273 gcc_cv_ld_as_needed=yes
6274 gcc_cv_ld_as_needed_option="-z ignore"
6275 gcc_cv_ld_no_as_needed_option="-z record"
6279 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
6280 # dl_iterate_phdr, i.e. since Solaris 11.
6282 *-*-solaris2.1[[1-9]]*)
6284 i?86-*-* | x86_64-*-*)
6285 if echo "$ld_ver" | grep GNU > /dev/null; then
6286 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
6287 gcc_cv_ld_as_needed=no
6293 gcc_cv_ld_as_needed=no
6297 if test x"$gcc_cv_ld_as_needed" = xyes; then
6298 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
6299 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
6300 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
6301 [Define to the linker option to ignore unused dependencies.])
6302 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
6303 [Define to the linker option to keep unused dependencies.])
6306 AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities)
6307 saved_LDFLAGS="$LDFLAGS"
6308 for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do
6309 LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map"
6310 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
6311 [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no])
6313 LDFLAGS="$saved_LDFLAGS"
6314 if test "x$gcc_cv_ld_clearcap" = xyes; then
6315 AC_DEFINE([HAVE_LD_CLEARCAP], 1,
6316 [Define if the linker supports clearing hardware capabilities via mapfile.])
6317 AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map])
6319 AC_MSG_RESULT($gcc_cv_ld_clearcap)
6325 emul_name="-melf32lppc"
6328 emul_name="-melf32ppc"
6331 AC_CACHE_CHECK(linker .gnu.attributes long double support,
6333 [gcc_cv_ld_ppc_attr=no
6334 if test x"$ld_is_gold" = xyes; then
6335 gcc_cv_ld_ppc_attr=yes
6336 elif test $in_tree_ld = yes ; then
6337 if test "$gcc_cv_gld_major_version" -eq 2 \
6338 -a "$gcc_cv_gld_minor_version" -ge 28 \
6339 -o "$gcc_cv_gld_major_version" -gt 2; then
6340 gcc_cv_ld_ppc_attr=yes
6342 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6343 # check that merging the long double .gnu_attribute doesn't warn
6344 cat > conftest1.s <<EOF
6347 cat > conftest2.s <<EOF
6350 if $gcc_cv_as -a32 -o conftest1.o conftest1.s > /dev/null 2>&1 \
6351 && $gcc_cv_as -a32 -o conftest2.o conftest2.s > /dev/null 2>&1 \
6352 && $gcc_cv_ld $emul_name -r -o conftest.o conftest1.o conftest2.o > /dev/null 2> conftest.err \
6353 && test ! -s conftest.err; then
6354 gcc_cv_ld_ppc_attr=yes
6356 rm -f conftest.err conftest.o conftest1.o conftest2.o conftest1.s conftest2.s
6359 if test x$gcc_cv_ld_ppc_attr = xyes; then
6360 AC_DEFINE(HAVE_LD_PPC_GNU_ATTR_LONG_DOUBLE, 1,
6361 [Define if your PowerPC linker has .gnu.attributes long double support.])
6366 case "$target:$tm_file" in
6367 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
6370 emul_name="-melf64lppc"
6373 emul_name="-melf64ppc"
6376 emul_name="-melf64lppc_fbsd"
6379 emul_name="-melf64ppc_fbsd"
6382 AC_CACHE_CHECK(linker support for omitting dot symbols,
6383 gcc_cv_ld_no_dot_syms,
6384 [gcc_cv_ld_no_dot_syms=no
6385 if test x"$ld_is_gold" = xyes; then
6386 gcc_cv_ld_no_dot_syms=yes
6387 elif test $in_tree_ld = yes ; then
6388 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
6389 gcc_cv_ld_no_dot_syms=yes
6391 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6392 cat > conftest1.s <<EOF
6396 cat > conftest2.s <<EOF
6397 .section ".opd","aw"
6402 .quad .LEfoo,.TOC.@tocbase,0
6408 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
6409 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
6410 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
6411 gcc_cv_ld_no_dot_syms=yes
6413 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
6416 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
6417 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
6418 [Define if your PowerPC64 linker only needs function descriptor syms.])
6421 AC_CACHE_CHECK(linker large toc support,
6422 gcc_cv_ld_large_toc,
6423 [gcc_cv_ld_large_toc=no
6424 if test x"$ld_is_gold" = xyes; then
6425 gcc_cv_ld_large_toc=yes
6426 elif test $in_tree_ld = yes ; then
6427 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
6428 gcc_cv_ld_large_toc=yes
6430 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6431 cat > conftest.s <<EOF
6432 .section ".tbss","awT",@nobits
6438 addis 9,13,ie0@got@tprel@ha
6439 ld 9,ie0@got@tprel@l(9)
6441 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
6442 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
6443 gcc_cv_ld_large_toc=yes
6445 rm -f conftest conftest.o conftest.s
6448 if test x"$gcc_cv_ld_large_toc" = xyes; then
6449 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
6450 [Define if your PowerPC64 linker supports a large TOC.])
6453 AC_CACHE_CHECK(linker toc pointer alignment,
6454 gcc_cv_ld_toc_align,
6455 [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then
6456 cat > conftest.s <<EOF
6461 .section .data.rel.ro,"aw",@progbits
6466 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
6467 && $gcc_cv_ld $emul_name -z norelro -o conftest conftest.o > /dev/null 2>&1; then
6468 gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'`
6470 rm -f conftest conftest.o conftest.s
6473 if test -n "$gcc_cv_ld_toc_align" && test $gcc_cv_ld_toc_align -gt 8; then
6474 AC_DEFINE_UNQUOTED(POWERPC64_TOC_POINTER_ALIGNMENT, $gcc_cv_ld_toc_align,
6475 [Define to .TOC. alignment forced by your linker.])
6482 AC_CACHE_CHECK(linker large toc support,
6483 gcc_cv_ld_large_toc,
6484 [gcc_cv_ld_large_toc=no
6485 if test x$gcc_cv_as != x ; then
6486 cat > conftest.s <<EOF
6496 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
6497 gcc_cv_ld_large_toc=yes
6499 rm -f conftest conftest.o conftest.s
6502 if test x"$gcc_cv_ld_large_toc" = xyes; then
6503 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
6504 [Define if your PowerPC64 linker supports a large TOC.])
6509 AC_CACHE_CHECK(linker --build-id support,
6511 [gcc_cv_ld_buildid=no
6512 if test $in_tree_ld = yes ; then
6513 if test "$gcc_cv_gld_major_version" -eq 2 -a \
6514 "$gcc_cv_gld_minor_version" -ge 18 -o \
6515 "$gcc_cv_gld_major_version" -gt 2 \
6516 && test $in_tree_ld_is_elf = yes; then
6517 gcc_cv_ld_buildid=yes
6519 elif test x$gcc_cv_ld != x; then
6520 if $gcc_cv_ld --help 2>&1 | grep build-id > /dev/null; then
6521 gcc_cv_ld_buildid=yes
6524 if test x"$gcc_cv_ld_buildid" = xyes; then
6525 AC_DEFINE(HAVE_LD_BUILDID, 1,
6526 [Define if your linker supports --build-id.])
6529 AC_ARG_ENABLE(linker-build-id,
6530 [AS_HELP_STRING([--enable-linker-build-id],
6531 [compiler will always pass --build-id to linker])],
6533 enable_linker_build_id=no)
6535 if test x"$enable_linker_build_id" = xyes; then
6536 if test x"$gcc_cv_ld_buildid" = xyes; then
6537 AC_DEFINE(ENABLE_LD_BUILDID, 1,
6538 [Define if gcc should always pass --build-id to linker.])
6540 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
6544 # In binutils 2.21, GNU ld gained support for new emulations fully
6545 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
6546 AC_CACHE_CHECK(linker *_sol2 emulation support,
6547 gcc_cv_ld_sol2_emulation,
6548 [gcc_cv_ld_sol2_emulation=no
6549 if test $in_tree_ld = yes ; then
6550 if test "$gcc_cv_gld_major_version" -eq 2 -a \
6551 "$gcc_cv_gld_minor_version" -ge 21 -o \
6552 "$gcc_cv_gld_major_version" -gt 2 \
6553 && test $in_tree_ld_is_elf = yes; then
6554 gcc_cv_ld_sol2_emulation=yes
6556 elif test x$gcc_cv_ld != x; then
6557 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
6558 grep _sol2 > /dev/null; then
6559 gcc_cv_ld_sol2_emulation=yes
6562 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
6563 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
6564 [Define if your linker supports the *_sol2 emulations.])
6567 AC_CACHE_CHECK(linker --sysroot support,
6569 [gcc_cv_ld_sysroot=no
6570 if test $in_tree_ld = yes ; then
6571 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
6572 gcc_cv_ld_sysroot=yes
6574 elif test x$gcc_cv_ld != x; then
6575 if $gcc_cv_ld --help 2>&1 | grep sysroot > /dev/null; then
6576 gcc_cv_ld_sysroot=yes
6579 if test x"$gcc_cv_ld_sysroot" = xyes; then
6580 AC_DEFINE(HAVE_LD_SYSROOT, 1,
6581 [Define if your linker supports --sysroot.])
6586 # Check for system-provided CRTs on Solaris 11.x and Solaris 12.
6587 AC_CACHE_CHECK([system-provided CRTs on Solaris],
6588 gcc_cv_solaris_crts,
6589 [gcc_cv_solaris_crts=no
6590 if test x$host != x$target; then
6591 if test "x$with_sysroot" = xyes; then
6592 target_sysroot="${test_exec_prefix}/${target_noncanonical}/sys-root"
6594 target_sysroot="${with_sysroot}"
6597 target_libdir="$target_sysroot/usr/lib"
6598 # At the time they were added, gcrt1.o became a symlink for backwards
6599 # compatibility on x86, while crt1.o was added on sparc, so check for that.
6601 i?86-*-solaris2* | x86_64-*-solaris2*)
6602 if test -h "$target_libdir/gcrt1.o"; then gcc_cv_solaris_crts=yes; fi
6605 if test -f "$target_libdir/crt1.o"; then gcc_cv_solaris_crts=yes; fi
6610 if test x$gcc_cv_solaris_crts = xyes; then
6611 AC_DEFINE(HAVE_SOLARIS_CRTS, 1,
6612 [Define if the system-provided CRTs are present on Solaris.])
6615 AC_ARG_ENABLE(libssp,
6616 [AS_HELP_STRING([--enable-libssp], [enable linking against libssp])],
6617 [case "${enableval}" in
6621 AC_MSG_ERROR([unknown libssp setting $enableval])
6625 # Test for stack protector support in target C library.
6626 AC_CACHE_CHECK(__stack_chk_fail in target C library,
6627 gcc_cv_libc_provides_ssp,
6628 [gcc_cv_libc_provides_ssp=no
6629 if test "x$enable_libssp" = "xno"; then
6630 gcc_cv_libc_provides_ssp=yes
6631 elif test "x$enable_libssp" = "xyes"; then
6632 gcc_cv_libc_provides_ssp=no
6636 # All versions of musl provide stack protector
6637 gcc_cv_libc_provides_ssp=yes;;
6638 *-*-linux* | *-*-kfreebsd*-gnu)
6639 # glibc 2.4 and later provides __stack_chk_fail and
6640 # either __stack_chk_guard, or TLS access to stack guard canary.
6641 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
6642 [if test -f $target_header_dir/features.h \
6643 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
6644 $target_header_dir/features.h > /dev/null; then
6645 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
6646 $target_header_dir/features.h > /dev/null && \
6647 test -f $target_header_dir/bits/uClibc_config.h && \
6648 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
6649 $target_header_dir/bits/uClibc_config.h > /dev/null; then
6650 gcc_cv_libc_provides_ssp=yes
6652 # all versions of Bionic support stack protector
6653 elif test -f $target_header_dir/sys/cdefs.h \
6654 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
6655 $target_header_dir/sys/cdefs.h > /dev/null; then
6656 gcc_cv_libc_provides_ssp=yes
6660 # Avoid complicated tests (see
6661 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
6662 # simply assert that glibc does provide this, which is true for all
6663 # realistically usable GNU/Hurd configurations.
6664 # All supported versions of musl provide it as well
6665 gcc_cv_libc_provides_ssp=yes;;
6666 *-*-darwin* | *-*-freebsd* | *-*-netbsd*)
6667 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
6668 [echo "no __stack_chk_fail on this target"])
6670 *) gcc_cv_libc_provides_ssp=no ;;
6674 if test x$gcc_cv_libc_provides_ssp = xyes; then
6675 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
6676 [Define if your target C library provides stack protector support])
6679 # Check whether --enable-default-ssp was given.
6680 AC_ARG_ENABLE(default-ssp,
6681 [AS_HELP_STRING([--enable-default-ssp],
6682 [enable Stack Smashing Protection as default])],[
6683 if test x$gcc_cv_libc_provides_ssp = xyes; then
6685 ia64*-*-*) enable_default_ssp=no ;;
6686 *) enable_default_ssp=$enableval ;;
6689 enable_default_ssp=no
6691 enable_default_ssp=no)
6692 if test x$enable_default_ssp = xyes ; then
6693 AC_DEFINE(ENABLE_DEFAULT_SSP, 1,
6694 [Define if your target supports default stack protector and it is enabled.])
6696 AC_SUBST([enable_default_ssp])
6698 # Test for <sys/sdt.h> on the target.
6699 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
6700 AC_MSG_CHECKING(sys/sdt.h in the target C library)
6702 if test -f $target_header_dir/sys/sdt.h; then
6704 AC_DEFINE(HAVE_SYS_SDT_H, 1,
6705 [Define if your target C library provides sys/sdt.h])
6707 AC_MSG_RESULT($have_sys_sdt_h)
6709 # Check if TFmode long double should be used by default or not.
6710 # Some glibc targets used DFmode long double, but with glibc 2.4
6711 # and later they can use TFmode.
6713 powerpc*-*-linux* | \
6717 AC_ARG_WITH(long-double-128,
6718 [AS_HELP_STRING([--with-long-double-128],
6719 [use 128-bit long double by default])],
6720 gcc_cv_target_ldbl128="$with_long_double_128", [
6722 s390*-*-linux-musl*)
6723 gcc_cv_target_ldbl128=yes
6725 powerpc*-*-linux-musl*)
6726 gcc_cv_target_ldbl128=no
6729 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
6730 [gcc_cv_target_ldbl128=no
6731 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
6732 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
6733 && gcc_cv_target_ldbl128=yes
6741 if test x$gcc_cv_target_ldbl128 = xyes; then
6742 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
6743 [Define if TFmode long double should be the default])
6746 # Check if TFmode long double target should use the IBM extended double or IEEE
6747 # 128-bit floating point formats if long doubles are 128-bits long. The long
6748 # double type can only be switched on powerpc64 bit Linux systems where VSX is
6749 # supported. Other PowerPC systems do not build the IEEE 128-bit emulator in
6751 AC_ARG_WITH([long-double-format],
6752 [AS_HELP_STRING([--with-long-double-format={ieee,ibm}]
6753 [Specify whether PowerPC long double uses IEEE or IBM format])],[
6754 case "$target:$with_long_double_format" in
6755 powerpc64le-*-linux*:ieee | powerpc64le-*-linux*:ibm)
6758 powerpc64-*-linux*:ieee | powerpc64-*-linux*:ibm)
6759 # IEEE 128-bit emulation is only built on 64-bit VSX Linux systems
6761 power7 | power8 | power9 | power1*)
6765 AC_MSG_ERROR([Configuration option --with-long-double-format is only \
6766 supported if the default cpu is power7 or newer])
6767 with_long_double_format=""
6771 powerpc64*-*-linux*:*)
6772 AC_MSG_ERROR([--with-long-double-format argument should be ibm or ieee])
6773 with_long_double_format=""
6776 AC_MSG_ERROR([Configure option --with-long-double-format is only supported \
6777 on 64-bit PowerPC VSX Linux systems])
6778 with_long_double_format=""
6783 # Check if the target LIBC supports exporting the AT_PLATFORM and AT_HWCAP
6784 # values in the TCB. Currently, only GLIBC 2.23 and later support this.
6785 gcc_cv_libc_provides_hwcap_in_tcb=no
6788 GCC_GLIBC_VERSION_GTE_IFELSE([2], [23], [gcc_cv_libc_provides_hwcap_in_tcb=yes], )
6791 if test x$gcc_cv_libc_provides_hwcap_in_tcb = xyes; then
6792 AC_DEFINE(TARGET_LIBC_PROVIDES_HWCAP_IN_TCB, 1,
6793 [Define if your target C Library provides the AT_HWCAP value in the TCB])
6796 # Check if the target LIBC handles PT_GNU_STACK.
6797 gcc_cv_libc_gnustack=unknown
6800 GCC_GLIBC_VERSION_GTE_IFELSE([2], [31], [gcc_cv_libc_gnustack=yes], )
6803 if test x$gcc_cv_libc_gnustack = xyes; then
6804 AC_DEFINE(TARGET_LIBC_GNUSTACK, 1,
6805 [Define if your target C Library properly handles PT_GNU_STACK])
6808 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
6809 gcc_cv_target_dl_iterate_phdr=unknown
6812 # <link.h> needs both a dl_iterate_phdr declaration and support for
6813 # compilation with largefile support.
6814 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
6815 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
6816 gcc_cv_target_dl_iterate_phdr=yes
6818 gcc_cv_target_dl_iterate_phdr=no
6821 *-*-dragonfly* | *-*-freebsd*)
6822 if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then
6823 gcc_cv_target_dl_iterate_phdr=yes
6825 gcc_cv_target_dl_iterate_phdr=no
6829 gcc_cv_target_dl_iterate_phdr=yes
6832 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
6833 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
6834 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
6835 [Define if your target C library provides the `dl_iterate_phdr' function.])
6837 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
6839 # We no longer support different GC mechanisms. Emit an error if
6840 # the user configures with --with-gc.
6842 [AS_HELP_STRING([--with-gc={page,zone}],
6843 [this option is not supported anymore. It used to choose
6844 the garbage collection mechanism to use with the compiler])],
6845 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
6848 # Libraries to use on the host. This will normally be set by the top
6849 # level Makefile. Here we simply capture the value for our Makefile.
6850 if test -z "${HOST_LIBS+set}"; then
6855 # Use the system's zlib library.
6858 dnl Very limited version of automake's enable-maintainer-mode
6860 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
6861 dnl maintainer-mode is disabled by default
6862 AC_ARG_ENABLE(maintainer-mode,
6863 [AS_HELP_STRING([--enable-maintainer-mode],
6864 [enable make rules and dependencies not useful
6865 (and sometimes confusing) to the casual installer])],
6866 maintainer_mode=$enableval,
6869 AC_MSG_RESULT($maintainer_mode)
6871 if test "$maintainer_mode" = "yes"; then
6878 dnl Whether to prevent multiple front-ends from linking at the same time
6880 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
6881 AC_ARG_ENABLE(link-mutex,
6882 [AS_HELP_STRING([--enable-link-mutex],
6883 [avoid linking multiple front-ends at once to avoid thrashing
6884 on the build machine])],
6885 do_link_mutex=$enableval,
6887 AC_MSG_RESULT($do_link_mutex)
6889 if test "$do_link_mutex" = "yes"; then
6894 AC_SUBST(DO_LINK_MUTEX)
6896 dnl Whether to prevent multiple GCC front-ends from linking at the same time
6898 AC_MSG_CHECKING([whether to serialize linking of multiple front-ends])
6899 AC_ARG_ENABLE(link-serialization,
6900 [AS_HELP_STRING([--enable-link-serialization],
6901 [avoid linking multiple GCC front-ends at once using make
6902 dependencies to avoid thrashing on the build machine])],
6903 do_link_serialization=$enableval,
6904 do_link_serialization=no)
6905 AC_MSG_RESULT($do_link_serialization)
6907 case "$do_link_serialization" in
6909 DO_LINK_SERIALIZATION=1;;
6910 [[1-9]] | [[1-9]][[0-9]] | [[1-9]][[0-9]][[0-9]])
6911 DO_LINK_SERIALIZATION=$do_link_serialization;;
6913 DO_LINK_SERIALIZATION=;;
6915 AC_MSG_ERROR(bad value ${do_link_serialization} given for --enable-link-serialization) ;;
6917 AC_SUBST(DO_LINK_SERIALIZATION)
6923 # Make empty files to contain the specs and options for each language.
6924 # Then add #include lines to for a compiler that has specs and/or options.
6930 # These (without "all_") are set in each config-lang.in.
6931 # `language' must be a single word so is spelled singularly.
6934 all_outputs='Makefile'
6935 # List of language configure and makefile fragments.
6936 all_lang_configurefrags=
6938 # Additional files for gengtype
6939 all_gtfiles="$target_gtfiles"
6941 # These are the languages that are set in --enable-languages,
6942 # and are available in the GCC tree.
6943 all_selected_languages=
6945 # Add the language fragments.
6946 # Languages are added via two mechanisms. Some information must be
6947 # recorded in makefile variables, these are defined in config-lang.in.
6948 # We accumulate them and plug them into the main Makefile.
6949 # The other mechanism is a set of hooks for each of the main targets
6950 # like `clean', `install', etc.
6952 language_hooks="Make-hooks"
6954 for lang in ${srcdir}/*/config-lang.in
6957 test "$lang" = "${srcdir}/*/config-lang.in" && continue
6959 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
6960 if test "x$lang_alias" = x
6962 echo "$lang doesn't set \$language." 1>&2
6965 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
6966 subdirs="$subdirs $subdir"
6968 # $gcc_subdir is where the gcc integration files are to be found
6969 # for a language, both for internal compiler purposes (compiler
6970 # sources implementing front-end to GCC tree converters), and for
6971 # build infrastructure purposes (Make-lang.in, etc.)
6973 # This will be <subdir> (relative to $srcdir) if a line like
6974 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
6975 # is found in <langdir>/config-lang.in, and will remain <langdir>
6978 # Except for the language alias (fetched above), the regular
6979 # "config-lang.in" contents are always retrieved from $gcc_subdir,
6980 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
6981 # only this and the language alias.
6983 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
6984 if [ "$gcc_subdir" = "" ]; then
6985 gcc_subdir="$subdir"
6988 case ",$enable_languages," in
6990 all_selected_languages="$all_selected_languages $lang_alias"
6991 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
6992 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
7004 . ${srcdir}/$gcc_subdir/config-lang.in
7005 if test "x$language" = x
7007 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
7012 case ",$enable_languages," in
7015 for i in $subdir_requires; do
7016 test -f "${srcdir}/$i/config-lang.in" && continue
7024 all_lang_configurefrags="$all_lang_configurefrags \$(srcdir)/$gcc_subdir/config-lang.in"
7025 if test "x$language" = xc && test -n "$all_lang_makefrags"; then
7026 # Put c/Make-lang.in fragment first to match serialization languages order.
7027 all_lang_makefrags="\$(srcdir)/$gcc_subdir/Make-lang.in $all_lang_makefrags"
7029 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
7031 if test -f $srcdir/$gcc_subdir/lang.opt; then
7032 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
7033 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
7035 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
7036 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
7038 all_languages="$all_languages $language"
7039 all_compilers="$all_compilers $compilers"
7040 all_outputs="$all_outputs $outputs"
7041 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
7042 case ",$enable_languages," in
7044 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
7046 AC_SUBST(enable_lto)
7053 for language in $all_selected_languages
7055 check_languages="$check_languages check-$language"
7059 for language in $all_selected_languages
7061 selftest_languages="$selftest_languages selftest-$language"
7064 # We link each language in with a set of hooks, reached indirectly via
7065 # lang.${target}. Only do so for selected languages.
7069 target_list="all.cross start.encap rest.encap tags \
7070 install-common install-man install-info install-pdf install-html dvi \
7071 pdf html uninstall info man srcextra srcman srcinfo \
7072 mostlyclean clean distclean maintainer-clean install-plugin"
7074 for t in $target_list
7077 for lang in $all_selected_languages
7081 echo "lang.$t: $x" >> Make-hooks
7084 echo "ifeq (\$(DO_LINK_SERIALIZATION),)" >> Make-hooks
7085 echo "SERIAL_LIST =" >> Make-hooks
7086 echo else >> Make-hooks
7090 serialization_languages=c
7091 for lang in $all_selected_languages
7093 test $lang = c && continue
7094 if test $lang = lto; then
7095 serialization_languages="$serialization_languages lto1 lto2"
7097 serialization_languages="$serialization_languages $lang"
7100 for lang in $serialization_languages
7102 test $lang = c && continue
7103 lang_cnt=`expr $lang_cnt + 1`
7104 lang_list=" $prev$lang_list"
7107 echo "SERIAL_LIST = \$(wordlist \$(DO_LINK_SERIALIZATION),$lang_cnt,$lang_list)" >> Make-hooks
7108 echo endif >> Make-hooks
7109 echo "SERIAL_COUNT = `expr $lang_cnt + 1`" >> Make-hooks
7110 echo "INDEX.c = 0" >> Make-hooks
7112 for lang in $serialization_languages
7114 test $lang = c && continue
7115 echo "$lang.prev = \$(if \$(word $lang_cnt,\$(SERIAL_LIST)),\$(\$(word $lang_cnt,\$(SERIAL_LIST)).serial))" >> Make-hooks
7116 echo "INDEX.$lang = $lang_idx" >> Make-hooks
7117 lang_cnt=`expr $lang_cnt - 1`
7118 lang_idx=`expr $lang_idx + 1`
7122 # Option include files
7125 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
7126 option_includes="option-includes.mk"
7127 AC_SUBST_FILE(option_includes)
7135 echo "dir ." > .gdbinit
7136 echo "dir ${srcdir}" >> .gdbinit
7137 if test x$gdb_needs_out_file_path = xyes
7139 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
7141 if test "x$subdirs" != x; then
7144 echo "dir ${srcdir}/$s" >> .gdbinit
7147 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
7148 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
7150 # Put a breakpoint on __asan_report_error to help with debugging buffer
7153 *-fsanitize=address*)
7154 echo "source ${srcdir}/gdbasan.in" >> .gdbinit
7158 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
7159 AC_SUBST(gcc_tooldir)
7162 # Find a directory in which to install a shared libgcc.
7164 AC_ARG_ENABLE(version-specific-runtime-libs,
7165 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
7166 [specify that runtime libraries should be
7167 installed in a compiler-specific directory])])
7169 # Substitute configuration variables
7172 AC_SUBST(all_compilers)
7173 AC_SUBST(all_gtfiles)
7174 AC_SUBST(all_lang_configurefrags)
7175 AC_SUBST(all_lang_makefrags)
7176 AC_SUBST(all_languages)
7177 AC_SUBST(all_selected_languages)
7178 AC_SUBST(build_exeext)
7179 AC_SUBST(build_install_headers_dir)
7180 AC_SUBST(build_xm_file_list)
7181 AC_SUBST(build_xm_include_list)
7182 AC_SUBST(build_xm_defines)
7183 AC_SUBST(build_file_translate)
7184 AC_SUBST(check_languages)
7185 AC_SUBST(selftest_languages)
7186 AC_SUBST(cpp_install_dir)
7187 AC_SUBST(xmake_file)
7188 AC_SUBST(tmake_file)
7189 AC_SUBST(TM_ENDIAN_CONFIG)
7190 AC_SUBST(TM_MULTILIB_CONFIG)
7191 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
7192 AC_SUBST(extra_gcc_objs)
7193 AC_SUBST(user_headers_inc_next_pre)
7194 AC_SUBST(user_headers_inc_next_post)
7195 AC_SUBST(extra_headers_list)
7196 AC_SUBST(extra_objs)
7197 AC_SUBST(extra_programs)
7198 AC_SUBST(float_h_file)
7199 AC_SUBST(gcc_config_arguments)
7200 AC_SUBST(gcc_gxx_include_dir)
7201 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
7202 AC_SUBST(gcc_gxx_libcxx_include_dir)
7203 AC_SUBST(gcc_gxx_libcxx_include_dir_add_sysroot)
7204 AC_SUBST(host_exeext)
7205 AC_SUBST(host_xm_file_list)
7206 AC_SUBST(host_xm_include_list)
7207 AC_SUBST(host_xm_defines)
7208 AC_SUBST(out_host_hook_obj)
7210 AC_SUBST(lang_opt_files)
7211 AC_SUBST(lang_specs_files)
7212 AC_SUBST(lang_tree_files)
7213 AC_SUBST(local_prefix)
7215 AC_SUBST(objc_boehm_gc)
7217 AC_SUBST(out_object_file)
7218 AC_SUBST(common_out_file)
7219 AC_SUBST(common_out_object_file)
7220 AC_SUBST(tm_file_list)
7221 AC_SUBST(tm_include_list)
7222 AC_SUBST(tm_defines)
7223 AC_SUBST(tm_p_file_list)
7224 AC_SUBST(tm_p_include_list)
7225 AC_SUBST(tm_d_file_list)
7226 AC_SUBST(tm_d_include_list)
7227 AC_SUBST(xm_file_list)
7228 AC_SUBST(xm_include_list)
7229 AC_SUBST(xm_defines)
7230 AC_SUBST(use_gcc_stdint)
7231 AC_SUBST(c_target_objs)
7232 AC_SUBST(cxx_target_objs)
7233 AC_SUBST(fortran_target_objs)
7234 AC_SUBST(d_target_objs)
7235 AC_SUBST(target_cpu_default)
7237 AC_SUBST_FILE(language_hooks)
7240 if test x${build} = x${host} ; then
7241 if test x${host} = x${target} ; then
7242 echo "Links are now set up to build a native compiler for ${target}." 1>&2
7244 echo "Links are now set up to build a cross-compiler" 1>&2
7245 echo " from ${host} to ${target}." 1>&2
7248 if test x${host} = x${target} ; then
7249 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
7250 echo " for ${target}." 1>&2
7252 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
7253 echo " from ${host} to ${target}." 1>&2
7257 AC_ARG_VAR(GMPLIBS,[How to link GMP])
7258 AC_ARG_VAR(GMPINC,[How to find GMP include files])
7260 AC_ARG_VAR(ISLLIBS,[How to link isl])
7261 AC_ARG_VAR(ISLINC,[How to find isl include files])
7262 if test "x${ISLLIBS}" != "x" ; then
7263 AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.])
7267 AC_SUBST(pluginlibs)
7268 AC_SUBST(enable_plugin)
7269 if test x"$enable_plugin" = x"yes"; then
7270 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
7274 # Enable --enable-host-shared
7275 AC_ARG_ENABLE(host-shared,
7276 [AS_HELP_STRING([--enable-host-shared],
7277 [build host code as shared libraries])],
7278 [PICFLAG=-fPIC], [PICFLAG=])
7279 AC_SUBST(enable_host_shared)
7283 AC_ARG_ENABLE(libquadmath-support,
7284 [AS_HELP_STRING([--disable-libquadmath-support],
7285 [disable libquadmath support for Fortran])],
7286 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
7287 ENABLE_LIBQUADMATH_SUPPORT=yes)
7288 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
7289 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
7290 [Define to 1 to enable libquadmath support])
7294 # Specify what hash style to use by default.
7295 AC_ARG_WITH([linker-hash-style],
7296 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
7297 [specify the linker hash style])],
7298 [case x"$withval" in
7300 LINKER_HASH_STYLE=sysv
7303 LINKER_HASH_STYLE=gnu
7306 LINKER_HASH_STYLE=both
7309 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
7312 [LINKER_HASH_STYLE=''])
7313 if test x"${LINKER_HASH_STYLE}" != x; then
7314 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
7315 [The linker hash style])
7318 # Specify what should be the default of -fdiagnostics-color option.
7319 AC_ARG_WITH([diagnostics-color],
7320 [AC_HELP_STRING([--with-diagnostics-color={never,auto,auto-if-env,always}],
7321 [specify the default of -fdiagnostics-color option
7322 auto-if-env stands for -fdiagnostics-color=auto if
7323 GCC_COLOR environment variable is present and
7324 -fdiagnostics-color=never otherwise])],
7325 [case x"$withval" in
7327 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_NO
7330 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO
7333 DIAGNOSTICS_COLOR_DEFAULT=-1
7336 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_YES
7339 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-color])
7342 [DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO])
7343 AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT,
7344 [The default for -fdiagnostics-color option])
7346 # Specify what should be the default of -fdiagnostics-urls option.
7347 AC_ARG_WITH([diagnostics-urls],
7348 [AC_HELP_STRING([--with-diagnostics-urls={never,auto,auto-if-env,always}],
7349 [specify the default of -fdiagnostics-urls option
7350 auto-if-env stands for -fdiagnostics-urls=auto if
7351 GCC_URLS or TERM_URLS environment variable is present and
7352 -fdiagnostics-urls=never otherwise])],
7353 [case x"$withval" in
7355 DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_NO
7358 DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_AUTO
7361 DIAGNOSTICS_URLS_DEFAULT=-1
7364 DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_YES
7367 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-urls])
7370 [DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_AUTO])
7371 AC_DEFINE_UNQUOTED(DIAGNOSTICS_URLS_DEFAULT, $DIAGNOSTICS_URLS_DEFAULT,
7372 [The default for -fdiagnostics-urls option])
7374 # Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit
7375 # of jit/jit-playback.c.
7376 gcc_driver_version=`eval "${get_gcc_base_ver} $srcdir/BASE-VER"`
7377 echo "gcc_driver_version: ${gcc_driver_version}"
7378 cat > gcc-driver-name.h <<EOF
7379 #define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_driver_version}${exeext}"
7382 # Check whether --enable-default-pie was given.
7383 AC_ARG_ENABLE(default-pie,
7384 [AS_HELP_STRING([--enable-default-pie],
7385 [enable Position Independent Executable as default])],
7386 enable_default_pie=$enableval,
7387 enable_default_pie=no)
7388 if test x$enable_default_pie = xyes ; then
7389 AC_DEFINE(ENABLE_DEFAULT_PIE, 1,
7390 [Define if your target supports default PIE and it is enabled.])
7392 AC_SUBST([enable_default_pie])
7394 # Check if -fno-PIE works.
7395 AC_CACHE_CHECK([for -fno-PIE option],
7397 [saved_CXXFLAGS="$CXXFLAGS"
7398 CXXFLAGS="$CXXFLAGS -fno-PIE"
7399 AC_COMPILE_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
7400 [gcc_cv_c_no_fpie=yes],
7401 [gcc_cv_c_no_fpie=no])
7402 CXXFLAGS="$saved_CXXFLAGS"])
7403 if test "$gcc_cv_c_no_fpie" = "yes"; then
7404 NO_PIE_CFLAGS="-fno-PIE"
7406 AC_SUBST([NO_PIE_CFLAGS])
7408 # Check if -no-pie works.
7409 AC_CACHE_CHECK([for -no-pie option],
7411 [saved_LDFLAGS="$LDFLAGS"
7412 LDFLAGS="$LDFLAGS -no-pie"
7413 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
7414 [gcc_cv_no_pie=yes],
7416 LDFLAGS="$saved_LDFLAGS"])
7417 if test "$gcc_cv_no_pie" = "yes"; then
7418 NO_PIE_FLAG="-no-pie"
7420 AC_SUBST([NO_PIE_FLAG])
7422 # Enable Intel CET on Intel CET enabled host if jit is enabled.
7423 GCC_CET_HOST_FLAGS(CET_HOST_FLAGS)
7424 case x$enable_languages in
7431 AC_SUBST(CET_HOST_FLAGS)
7433 # Check linker supports '-z bndplt'
7434 ld_bndplt_support=no
7435 AC_MSG_CHECKING(linker -z bndplt option)
7436 if test x"$ld_is_gold" = xno; then
7437 if test $in_tree_ld = yes ; then
7438 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
7439 ld_bndplt_support=yes
7441 elif test x$gcc_cv_ld != x; then
7442 # Check if linker supports -a bndplt option
7443 if $gcc_cv_ld --help 2>&1 | grep -- '-z bndplt' > /dev/null; then
7444 ld_bndplt_support=yes
7448 if test x"$ld_bndplt_support" = xyes; then
7449 AC_DEFINE(HAVE_LD_BNDPLT_SUPPORT, 1,
7450 [Define if your linker supports -z bndplt])
7452 AC_MSG_RESULT($ld_bndplt_support)
7454 # Check linker supports '--push-state'/'--pop-state'
7455 ld_pushpopstate_support=no
7456 AC_MSG_CHECKING(linker --push-state/--pop-state options)
7457 if test x"$ld_is_gold" = xno; then
7458 if test $in_tree_ld = yes ; then
7459 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
7460 ld_pushpopstate_support=yes
7462 elif test x$gcc_cv_ld != x; then
7463 # Check if linker supports --push-state/--pop-state options
7464 if $gcc_cv_ld --help 2>&1 | grep -- '--push-state' > /dev/null; then
7465 ld_pushpopstate_support=yes
7469 if test x"$ld_pushpopstate_support" = xyes; then
7470 AC_DEFINE(HAVE_LD_PUSHPOPSTATE_SUPPORT, 1,
7471 [Define if your linker supports --push-state/--pop-state])
7473 AC_MSG_RESULT($ld_pushpopstate_support)
7475 # On s390, float_t has historically been statically defined as double for no
7476 # good reason. To comply with the C standard in the light of this definition,
7477 # gcc has evaluated float expressions in double precision when in
7478 # standards-compatible mode or when given -fexcess-precision=standard. To enable
7479 # a smooth transition towards the new model used by most architectures, where
7480 # gcc describes its behavior via the macro __FLT_EVAL_METHOD__ and glibc derives
7481 # float_t from that, this behavior can be configured with
7482 # --enable-s390-excess-float-precision. When given as enabled, that flag selects
7483 # the old model. When omitted, native builds and cross compiles that have target
7484 # libc headers will detect whether libc clamps float_t to double and in that
7485 # case maintain the old model. Otherwise, they will default to the new model.
7486 AC_ARG_ENABLE(s390-excess-float-precision,
7487 [AS_HELP_STRING([--enable-s390-excess-float-precision],
7488 [on s390 targets, evaluate float with double precision
7489 when in standards-conforming mode])],
7490 [],[enable_s390_excess_float_precision=auto])
7494 if test x"$enable_s390_excess_float_precision" = xauto; then
7495 # Can we autodetect the behavior of the target libc?
7496 if test "$target" = "$host" -a "$host" = "$build"; then
7497 enable_s390_excess_float_precision=autodetect
7498 elif test "x$with_headers" != xno; then
7499 # cross build. are target headers available?
7500 # carefully coerce the build-system compiler to use target headers
7501 saved_CXXFLAGS="$CXXFLAGS"
7502 fixed_XGCC_FLAGS_FOR_TARGET=`echo "$XGCC_FLAGS_FOR_TARGET" | sed 's/-B/-idirafter/g'`
7503 CROSS_TEST_CXXFLAGS="-nostdinc $fixed_XGCC_FLAGS_FOR_TARGET"
7504 CXXFLAGS="$CROSS_TEST_CXXFLAGS"
7505 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
7507 ]])], [enable_s390_excess_float_precision=autodetect], [])
7508 CXXFLAGS="$saved_CXXFLAGS"
7511 if test x"$enable_s390_excess_float_precision" = xautodetect; then
7512 saved_CXXFLAGS="$CXXFLAGS"
7513 if ! test "$target" = "$host" -a "$host" = "$build"; then
7514 CXXFLAGS="$CROSS_TEST_CXXFLAGS"
7515 unset CROSS_TEST_CXXFLAGS
7517 AC_CACHE_CHECK([for glibc clamping float_t to double],
7518 gcc_cv_float_t_clamped_to_double, [
7519 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
7520 #define __FLT_EVAL_METHOD__ 0
7522 int dummy[sizeof(float_t) == sizeof(double) ? 1 : -1];
7524 [gcc_cv_float_t_clamped_to_double=yes],
7525 [gcc_cv_float_t_clamped_to_double=no])])
7526 CXXFLAGS="$saved_CXXFLAGS"
7527 enable_s390_excess_float_precision="$gcc_cv_float_t_clamped_to_double"
7529 # no way to detect behavior of target libc, default to new model
7530 enable_s390_excess_float_precision=no
7534 GCC_TARGET_TEMPLATE(ENABLE_S390_EXCESS_FLOAT_PRECISION)
7535 if test x"$enable_s390_excess_float_precision" = xyes; then
7536 AC_DEFINE(ENABLE_S390_EXCESS_FLOAT_PRECISION, 1,
7537 [Define to enable evaluating float expressions with double precision in
7538 standards-compatible mode on s390 targets.])
7543 # Configure the subdirectories
7544 # AC_CONFIG_SUBDIRS($subdirs)
7546 # Create the Makefile
7547 # and configure language subdirectories
7548 AC_CONFIG_FILES($all_outputs)
7550 AC_CONFIG_COMMANDS([default],
7552 case ${CONFIG_HEADERS} in
7553 *auto-host.h:config.in*)
7556 # Make sure all the subdirs exist.
7557 for d in $subdirs doc build common c-family
7559 test -d $d || mkdir $d
7562 [subdirs='$subdirs'])