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 AC_ARG_WITH(multilib-list,
1143 [AS_HELP_STRING([--with-multilib-list], [select multilibs (AArch64, SH and x86-64 only)])],
1145 with_multilib_list=default)
1147 AC_ARG_WITH(multilib-generator,
1148 [AS_HELP_STRING([--with-multilib-generator], [Multi-libs configuration string (RISC-V only)])],
1150 with_multilib_generator=default)
1152 # -------------------------
1153 # Checks for other programs
1154 # -------------------------
1158 # Find some useful tools
1160 # We need awk to create options.c and options.h.
1161 # Bail out if it's missing.
1163 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
1170 AC_SUBST(ranlib_flags)
1174 # See if cmp has --ignore-initial.
1175 gcc_AC_PROG_CMP_IGNORE_INITIAL
1177 # See if we have the mktemp command.
1178 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
1180 # See if makeinfo has been installed and is modern enough
1181 # that we can use it.
1182 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
1183 [GNU texinfo.* \([0-9][0-9.]*\)],
1184 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
1185 if test $gcc_cv_prog_makeinfo_modern = no; then
1187 *** Makeinfo is missing or too old.
1188 *** Info documentation will not be built.])
1193 AC_SUBST(BUILD_INFO)
1195 # Is pod2man recent enough to regenerate manpages?
1196 AC_MSG_CHECKING([for recent Pod::Man])
1197 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
1199 GENERATED_MANPAGES=generated-manpages
1204 AC_SUBST(GENERATED_MANPAGES)
1206 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
1209 dnl Don't use AC_PROG_LEX; we insist on flex.
1210 dnl LEXLIB is not useful in gcc.
1211 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
1214 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
1216 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
1217 # check for build == host before using them.
1220 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
1221 && test -d ../binutils ; then
1222 NM='${objdir}/../binutils/nm-new'
1224 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
1228 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
1229 && test -d ../binutils ; then
1230 AR='${objdir}/../binutils/ar'
1232 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
1235 # The jit documentation looks better if built with sphinx, but can be
1236 # built with texinfo if sphinx is not available.
1237 # Set "doc_build_sys" to "sphinx" or "texinfo" accordingly.
1238 AC_CHECK_PROG(doc_build_sys, sphinx-build, sphinx, texinfo)
1240 # --------------------
1241 # Checks for C headers
1242 # --------------------
1244 # Need to reject headers which give warnings, so that the -Werror bootstrap
1245 # works later. *sigh* This needs to come before all header checks.
1252 AC_HEADER_TIOCGWINSZ
1253 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
1254 fcntl.h ftw.h unistd.h sys/file.h sys/time.h sys/mman.h \
1255 sys/resource.h sys/param.h sys/times.h sys/stat.h \
1256 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
1258 # Check for thread headers.
1259 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
1260 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
1262 # These tests can't be done till we know if we have limits.h.
1266 # ----------------------
1267 # Checks for C++ headers
1268 # ----------------------
1270 dnl Autoconf will give an error in the configure script if there is no
1271 dnl C++ preprocessor. Hack to prevent that.
1272 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
1274 m4_popdef([AC_MSG_ERROR])[]dnl
1276 AC_CHECK_HEADERS(unordered_map)
1277 AC_CHECK_HEADERS(tr1/unordered_map)
1278 AC_CHECK_HEADERS(ext/hash_map)
1281 # Dependency checking.
1285 AC_CONFIG_COMMANDS([gccdepdir],[
1286 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR
1287 for lang in $subdirs c-family common analyzer rtl-ssa
1289 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs $lang/$DEPDIR
1290 done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR])
1292 ZW_PROG_COMPILER_DEPENDENCIES([CXX])
1299 # These libraries may be used by collect2.
1300 # We may need a special search path to get them linked.
1301 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
1303 for libs in '' -lld -lmld \
1304 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
1305 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1308 AC_TRY_LINK_FUNC(ldopen,
1309 [gcc_cv_collect2_libs="$libs"; break])
1312 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1313 case $gcc_cv_collect2_libs in
1315 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1317 AC_SUBST(COLLECT2_LIBS)
1319 # When building Ada code on Alpha, we need exc_resume which is usually in
1320 # -lexc. So test for it.
1323 AC_SEARCH_LIBS(exc_resume, exc)
1326 AC_SUBST(GNAT_LIBEXC)
1328 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1331 AC_SEARCH_LIBS(kstat_open, kstat)
1332 EXTRA_GCC_LIBS="$LIBS"
1334 AC_SUBST(EXTRA_GCC_LIBS)
1336 # Solaris needs libsocket and libnsl for socket functions before 11.4.
1337 # C++ needs those for libcody.
1345 # Some systems put ldexp and frexp in libm instead of libc; assume
1346 # they're both in the same place. jcf-dump needs them.
1349 AC_SEARCH_LIBS(ldexp, m)
1354 # Some systems need dlopen
1357 AC_SEARCH_LIBS(dlopen, dl)
1362 # Use <inttypes.h> only if it exists,
1363 # doesn't clash with <sys/types.h>, declares intmax_t and defines
1365 AC_MSG_CHECKING(for inttypes.h)
1366 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1367 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1368 [[#define __STDC_FORMAT_MACROS
1369 #include <sys/types.h>
1370 #include <inttypes.h>]],
1375 [gcc_cv_header_inttypes_h=yes],
1376 [gcc_cv_header_inttypes_h=no])])
1377 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1378 if test $gcc_cv_header_inttypes_h = yes; then
1379 AC_DEFINE(HAVE_INTTYPES_H, 1,
1380 [Define if you have a working <inttypes.h> header file.])
1383 # Look for the ZSTD package.
1386 AC_SUBST(ZSTD_INCLUDE)
1390 AC_SUBST(ZSTD_CPPFLAGS)
1391 AC_SUBST(ZSTD_LDFLAGS)
1393 [AS_HELP_STRING([--with-zstd=PATH],
1394 [specify prefix directory for installed zstd library.
1395 Equivalent to --with-zstd-include=PATH/include
1396 plus --with-zstd-lib=PATH/lib])])
1397 AC_ARG_WITH(zstd-include,
1398 [AS_HELP_STRING([--with-zstd-include=PATH],
1399 [specify directory for installed zstd include files])])
1400 AC_ARG_WITH(zstd-lib,
1401 [AS_HELP_STRING([--with-zstd-lib=PATH],
1402 [specify directory for the installed zstd library])])
1403 case "x$with_zstd" in
1409 *) ZSTD_INCLUDE=$with_zstd/include
1410 ZSTD_LIB=$with_zstd/lib
1414 if test "x$with_zstd" != xno; then
1415 if test "x$with_zstd_include" != x; then
1416 ZSTD_INCLUDE=$with_zstd_include
1418 if test "x$with_zstd_lib" != x; then
1419 ZSTD_LIB=$with_zstd_lib
1421 if test "x$ZSTD_INCLUDE" != x \
1422 && test "x$ZSTD_INCLUDE" != xno; then
1423 ZSTD_CPPFLAGS=-I$ZSTD_INCLUDE
1425 if test "x$ZSTD_LIB" != x \
1426 && test "x$ZSTD_LIB" != xno; then
1427 ZSTD_LDFLAGS=-L$ZSTD_LIB
1430 CXXFLAGS="$CXXFLAGS $ZSTD_CPPFLAGS"
1431 LDFLAGS="$LDFLAGS $ZSTD_LDFLAGS"
1433 AC_MSG_CHECKING(for zstd.h)
1434 AC_CACHE_VAL(gcc_cv_header_zstd_h,
1435 # We require version 1.3.0 or later. This is the first version that has
1436 # ZSTD_getFrameContentSize.
1437 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1439 #if ZSTD_VERSION_NUMBER < 10300
1440 #error "need zstd 1.3.0 or better"
1442 [gcc_cv_header_zstd_h=yes],
1443 [gcc_cv_header_zstd_h=no])])
1444 AC_MSG_RESULT($gcc_cv_header_zstd_h)
1445 if test $gcc_cv_header_zstd_h = yes; then
1446 AC_DEFINE(HAVE_ZSTD_H, 1,
1447 [Define if you have a working <zstd.h> header file.])
1448 elif test "x$with_zstd" != x; then
1449 as_fn_error $? "Unable to find zstd.h. See config.log for details." "$LINENO" 5
1452 # LTO can use zstd compression algorithm
1455 AC_SEARCH_LIBS(ZSTD_compress, zstd)
1461 dnl Disabled until we have a complete test for buggy enum bitfields.
1462 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1464 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1465 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1466 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1467 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1468 putchar_unlocked putc_unlocked)
1469 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoq \
1470 popen sysconf strsignal getrusage nl_langinfo \
1471 gettimeofday mbstowcs wcswidth mmap posix_fallocate setlocale \
1472 gcc_UNLOCKED_FUNCS madvise mallinfo mallinfo2 fstatat)
1474 if test x$ac_cv_func_mbstowcs = xyes; then
1475 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1476 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1482 [gcc_cv_func_mbstowcs_works=yes],
1483 [gcc_cv_func_mbstowcs_works=no],
1484 [gcc_cv_func_mbstowcs_works=yes])])
1485 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1486 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1487 [Define this macro if mbstowcs does not crash when its
1488 first argument is NULL.])
1492 AC_CHECK_TYPE(ssize_t, int)
1493 AC_CHECK_TYPE(caddr_t, char *)
1494 AC_CHECK_TYPE(sighander_t,
1495 AC_DEFINE(HAVE_SIGHANDLER_T, 1,
1496 [Define if <sys/signal.h> defines sighandler_t]),
1499 GCC_AC_FUNC_MMAP_BLACKLIST
1503 # Under VMS, vfork works very differently than on Unix. The standard test
1504 # won't work, and it isn't easily adaptable. It makes more sense to
1506 ac_cv_func_vfork_works=yes
1513 # Until we have in-tree GNU iconv:
1515 if test -f "$LTLIBICONV"; then
1516 LIBICONV_DEP=$LTLIBICONV
1518 AC_SUBST(LIBICONV_DEP)
1524 # We will need to find libiberty.h and ansidecl.h
1525 saved_CFLAGS="$CFLAGS"
1526 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1527 saved_CXXFLAGS="$CXXFLAGS"
1528 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1530 # gcc_AC_CHECK_DECLS doesn't support overloaded functions, so use the
1531 # normal autoconf function for these. But force definition of
1532 # HAVE_DECL_BASENAME like gcc_AC_CHECK_DECLS does, to suppress the bizarre
1533 # basename handling in libiberty.h.
1534 AC_CHECK_DECLS([basename(const char*), strstr(const char*,const char*)], , ,[
1535 #undef HAVE_DECL_BASENAME
1536 #define HAVE_DECL_BASENAME 1
1537 #include "ansidecl.h"
1538 #include "system.h"])
1540 gcc_AC_CHECK_DECLS(getenv atol atoll asprintf sbrk abort atof getcwd getwd \
1541 madvise stpcpy strnlen strsignal strverscmp \
1542 strtol strtoul strtoll strtoull setenv unsetenv \
1543 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1544 free getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1545 #include "ansidecl.h"
1546 #include "system.h"])
1548 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1549 #include "ansidecl.h"
1551 #ifdef HAVE_SYS_RESOURCE_H
1552 #include <sys/resource.h>
1556 gcc_AC_CHECK_DECLS(mallinfo mallinfo2, , ,[
1557 #include "ansidecl.h"
1559 #ifdef HAVE_MALLOC_H
1564 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1565 #include "ansidecl.h"
1567 #ifdef HAVE_SYS_RESOURCE_H
1568 #include <sys/resource.h>
1570 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1571 [Define to `long' if <sys/resource.h> doesn't define.])])
1573 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1574 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1575 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1576 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1577 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1578 #include "ansidecl.h"
1587 gcc_AC_CHECK_DECLS(times, , ,[
1588 #include "ansidecl.h"
1590 #ifdef HAVE_SYS_TIMES_H
1591 #include <sys/times.h>
1595 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1596 #include "ansidecl.h"
1601 # More time-related stuff.
1602 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1603 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1604 #include "ansidecl.h"
1606 #ifdef HAVE_SYS_TIMES_H
1607 #include <sys/times.h>
1609 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1610 if test $ac_cv_struct_tms = yes; then
1611 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1612 [Define if <sys/times.h> defines struct tms.])
1615 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1616 # revisit after autoconf 2.50.
1617 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1618 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1619 #include "ansidecl.h"
1621 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1622 if test $gcc_cv_type_clock_t = yes; then
1623 AC_DEFINE(HAVE_CLOCK_T, 1,
1624 [Define if <time.h> defines clock_t.])
1627 # Check if F_SETLKW is supported by fcntl.
1628 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1629 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1630 #include <fcntl.h>]], [[
1636 return fcntl (1, F_SETLKW, &fl);]])],
1637 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1638 if test $ac_cv_f_setlkw = yes; then
1639 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1640 [Define if F_SETLKW supported by fcntl.])
1643 # Check if O_CLOEXEC is defined by fcntl
1644 AC_CACHE_CHECK(for O_CLOEXEC, ac_cv_o_cloexec, [
1645 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1646 #include <fcntl.h>]], [[
1647 return open ("/dev/null", O_RDONLY | O_CLOEXEC);]])],
1648 [ac_cv_o_cloexec=yes],[ac_cv_o_cloexec=no])])
1649 if test $ac_cv_o_cloexec = yes; then
1650 AC_DEFINE(HOST_HAS_O_CLOEXEC, 1,
1651 [Define if O_CLOEXEC supported by fcntl.])
1654 # C++ Modules would like some networking features to provide the mapping
1655 # server. You can still use modules without them though.
1656 # The following network-related checks could probably do with some
1657 # Windows and other non-linux defenses and checking.
1659 # Local socket connectivity wants AF_UNIX networking
1660 # Check for AF_UNIX networking
1661 AC_CACHE_CHECK(for AF_UNIX, ac_cv_af_unix, [
1662 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1663 #include <sys/types.h>
1664 #include <sys/socket.h>
1666 #include <netinet/in.h>]],[[
1668 un.sun_family = AF_UNSPEC;
1669 int fd = socket (AF_UNIX, SOCK_STREAM, 0);
1670 connect (fd, (sockaddr *)&un, sizeof (un));]])],
1671 [ac_cv_af_unix=yes],
1672 [ac_cv_af_unix=no])])
1673 if test $ac_cv_af_unix = yes; then
1674 AC_DEFINE(HAVE_AF_UNIX, 1,
1675 [Define if AF_UNIX supported.])
1678 # Remote socket connectivity wants AF_INET6 networking
1679 # Check for AF_INET6 networking
1680 AC_CACHE_CHECK(for AF_INET6, ac_cv_af_inet6, [
1681 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1682 #include <sys/types.h>
1683 #include <sys/socket.h>
1684 #include <netinet/in.h>
1685 #include <netdb.h>]],[[
1687 in6.sin6_family = AF_UNSPEC;
1688 struct addrinfo *addrs = 0;
1689 struct addrinfo hints;
1691 hints.ai_family = AF_INET6;
1692 hints.ai_socktype = SOCK_STREAM;
1693 hints.ai_protocol = 0;
1694 hints.ai_canonname = 0;
1697 int e = getaddrinfo ("localhost", 0, &hints, &addrs);
1698 const char *str = gai_strerror (e);
1699 freeaddrinfo (addrs);
1700 int fd = socket (AF_INET6, SOCK_STREAM, 0);
1701 connect (fd, (sockaddr *)&in6, sizeof (in6));]])],
1702 [ac_cv_af_inet6=yes],
1703 [ac_cv_af_inet6=no])])
1704 if test $ac_cv_af_inet6 = yes; then
1705 AC_DEFINE(HAVE_AF_INET6, 1,
1706 [Define if AF_INET6 supported.])
1709 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1710 CFLAGS="$saved_CFLAGS"
1711 CXXFLAGS="$saved_CXXFLAGS"
1713 # mkdir takes a single argument on some systems.
1714 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1722 # With Setjmp/Longjmp based exception handling.
1723 AC_ARG_ENABLE(sjlj-exceptions,
1724 [AS_HELP_STRING([--enable-sjlj-exceptions],
1725 [arrange to use setjmp/longjmp exception handling])],
1728 if test $enableval != yes; then
1729 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1734 force_sjlj_exceptions=yes],
1737 force_sjlj_exceptions=yes
1741 force_sjlj_exceptions=yes
1745 force_sjlj_exceptions=no
1748 if test $force_sjlj_exceptions = yes; then
1749 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1750 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1751 [Define 0/1 to force the choice for exception handling model.])
1754 # --------------------------------------------------------
1755 # Build, host, and target specific configuration fragments
1756 # --------------------------------------------------------
1758 # Collect build-machine-specific information.
1759 . ${srcdir}/config.build || exit 1
1761 # Collect host-machine-specific information.
1762 . ${srcdir}/config.host || exit 1
1766 # Collect target-machine-specific information.
1767 . ${srcdir}/config.gcc || exit 1
1769 extra_objs="${host_extra_objs} ${extra_objs}"
1770 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1772 # Default the target-machine variables that were not explicitly set.
1773 if test x"$tm_file" = x
1774 then tm_file=$cpu_type/$cpu_type.h; fi
1776 if test x"$extra_headers" = x
1777 then extra_headers=; fi
1779 if test x$md_file = x
1780 then md_file=$cpu_type/$cpu_type.md; fi
1782 if test x$out_file = x
1783 then out_file=$cpu_type/$cpu_type.c; fi
1785 if test x"$tmake_file" = x
1786 then tmake_file=$cpu_type/t-$cpu_type
1789 # Support --enable-initfini-array.
1790 if test x$enable_initfini_array != xno; then
1791 tm_file="${tm_file} initfini-array.h"
1794 if test x"$dwarf2" = xyes
1795 then tm_file="$tm_file tm-dwarf2.h"
1798 # Say what files are being used for the output code and MD file.
1799 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1800 echo "Using \`$srcdir/config/$md_file' as machine description file."
1802 # If any of the xm_file variables contain nonexistent files, warn
1803 # about them and drop them.
1806 for x in $build_xm_file; do
1807 if test -f $srcdir/config/$x
1809 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1815 for x in $host_xm_file; do
1816 if test -f $srcdir/config/$x
1818 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1824 for x in $xm_file; do
1825 if test -f $srcdir/config/$x
1827 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1833 for f in $tm_file; do
1836 if test $count = ax; then
1837 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1839 echo "Using the following target machine macro files:"
1840 for f in $tm_file; do
1841 echo " $srcdir/config/$f"
1845 if test x$use_long_long_for_widest_fast_int = xyes; then
1846 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1847 [Define to 1 if the 'long long' type is wider than 'long' but still
1848 efficiently supported by the host hardware.])
1851 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1852 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1854 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1855 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1858 for f in $host_xm_file; do
1861 if test $count = a; then
1863 elif test $count = ax; then
1864 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1866 echo "Using the following host machine macro files:"
1867 for f in $host_xm_file; do
1868 echo " $srcdir/config/$f"
1871 echo "Using ${out_host_hook_obj} for host machine hooks."
1873 if test "$host_xm_file" != "$build_xm_file"; then
1875 for f in $build_xm_file; do
1878 if test $count = a; then
1880 elif test $count = ax; then
1881 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1883 echo "Using the following build machine macro files:"
1884 for f in $build_xm_file; do
1885 echo " $srcdir/config/$f"
1890 if test -n "$configured_native_system_header_dir"; then
1891 native_system_header_dir=$configured_native_system_header_dir
1893 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1894 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1898 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1899 gcc_cv_mcontext_underscores,
1900 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
1901 #include <sys/cdefs.h>
1902 #include <sys/signal.h>
1903 #include <ucontext.h>
1904 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1906 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1907 if test $gcc_cv_mcontext_underscores = yes; then
1908 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1909 [mcontext_t fields start with __])
1918 # Check if a valid thread package
1919 case ${enable_threads} in
1922 target_thread_file='single'
1926 target_thread_file='single'
1928 aix | dce | lynx | mipssde | posix | rtems | \
1929 single | tpf | vxworks | win32)
1930 target_thread_file=${enable_threads}
1933 echo "${enable_threads} is an unknown thread package" 1>&2
1938 if test x${thread_file} = x; then
1939 # No thread file set by target-specific clauses in config.gcc,
1940 # so use file chosen by default logic above
1941 thread_file=${target_thread_file}
1949 if test x$enable___cxa_atexit = xyes || \
1950 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1951 if test x$host = x$target; then
1953 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1954 # keyed to flag_use_cxa_atexit
1962 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1963 [echo "__cxa_atexit can't be enabled on this target"])
1967 # We can't check for __cxa_atexit when building a cross, so assume
1971 if test x$use_cxa_atexit = xyes; then
1972 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1973 [Define if you want to use __cxa_atexit, rather than atexit, to
1974 register C++ destructors for local statics and global objects.
1975 This is essential for fully standards-compliant handling of
1976 destructors, but requires __cxa_atexit in libc.])
1980 # Look for a file containing extra machine modes.
1981 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1982 extra_modes_file='$(srcdir)'/config/${extra_modes}
1983 AC_SUBST(extra_modes_file)
1984 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1985 [Define to the name of a file containing a list of extra machine modes
1986 for this architecture.])
1989 # Convert extra_options into a form suitable for Makefile use.
1992 for f in $extra_options; do
1993 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1994 all_opt_files="$all_opt_files $srcdir/config/$f"
1996 AC_SUBST(extra_opt_files)
1998 # auto-host.h is the file containing items generated by autoconf and is
1999 # the first file included by config.h.
2000 # If host=build, it is correct to have bconfig include auto-host.h
2001 # as well. If host!=build, we are in error and need to do more
2002 # work to find out the build config parameters.
2003 if test x$host = x$build
2005 build_auto=auto-host.h
2006 HAVE_AUTO_BUILD='# '
2008 # We create a subdir, then run autoconf in the subdir.
2009 # To prevent recursion we set host and build for the new
2010 # invocation of configure to the build for this invocation
2017 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
2018 *) realsrcdir=../${srcdir};;
2020 # Clearing GMPINC is necessary to prevent host headers being
2021 # used by the build compiler. Defining GENERATOR_FILE stops
2022 # system.h from including gmp.h.
2023 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
2024 CXX="${CXX_FOR_BUILD}" CXXFLAGS="${CXXFLAGS_FOR_BUILD}" \
2025 LD="${LD_FOR_BUILD}" LDFLAGS="${LDFLAGS_FOR_BUILD}" \
2026 GMPINC="" CPPFLAGS="${CPPFLAGS} -DGENERATOR_FILE" \
2027 ${realsrcdir}/configure \
2028 --enable-languages=${enable_languages-all} \
2029 ${enable_obsolete+--enable-obsolete="$enable_obsolete"} \
2030 ${enable_option_checking+--enable-option-checking="$enable_option_checking"} \
2031 --target=$target_alias --host=$build_alias \
2032 --build=$build_alias || exit # retaining $tempdir
2034 # We just finished tests for the build machine, so rename
2035 # the file auto-build.h in the gcc directory.
2036 mv auto-host.h ../auto-build.h
2039 build_auto=auto-build.h
2042 AC_SUBST(build_subdir)
2043 AC_SUBST(HAVE_AUTO_BUILD)
2045 tm_file="${tm_file} defaults.h"
2046 tm_p_file="${tm_p_file} tm-preds.h"
2047 tm_d_file="${tm_d_file} defaults.h"
2048 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
2049 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
2050 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
2051 # put this back in temporarily.
2052 xm_file="auto-host.h ansidecl.h ${xm_file}"
2059 # Compile in configure arguments.
2060 if test -f configargs.h ; then
2061 # Being re-configured.
2062 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
2063 gcc_reconf_arguments=`echo "$gcc_config_arguments" | sed -e 's/^.*\( : (reconfigured) .*$\)/\1/'`
2064 if [ "$gcc_reconf_arguments" != " : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS" ]; then
2065 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
2068 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
2071 # Double all backslashes and backslash all quotes to turn
2072 # gcc_config_arguments into a C string.
2073 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
2074 $gcc_config_arguments
2076 gcc_config_arguments_str=`cat conftest.out`
2079 cat > configargs.h <<EOF
2080 /* Generated automatically. */
2081 static const char configuration_arguments[] = "$gcc_config_arguments_str";
2082 static const char thread_model[] = "$thread_file";
2084 static const struct {
2085 const char *name, *value;
2086 } configure_default_options[] = $configure_default_options;
2091 gcc_BASEVER=`cat $srcdir/BASE-VER`
2092 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
2093 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
2094 if test -f $srcdir/REVISION ; then
2095 gcc_REVISION=`cat $srcdir/REVISION`
2099 cat > plugin-version.h <<EOF
2100 #include "configargs.h"
2102 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
2103 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
2104 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
2105 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
2107 static char basever[] = "$gcc_BASEVER";
2108 static char datestamp[] = "$gcc_DATESTAMP";
2109 static char devphase[] = "$gcc_DEVPHASE";
2110 static char revision[] = "$gcc_REVISION";
2112 /* FIXME plugins: We should make the version information more precise.
2113 One way to do is to add a checksum. */
2115 static struct plugin_gcc_version gcc_version = {basever, datestamp,
2117 configuration_arguments};
2121 # Determine what GCC version number to use in filesystem paths.
2124 # Internationalization
2125 ZW_GNU_GETTEXT_SISTER_DIR
2127 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
2128 # -liconv on the link line twice.
2129 case "$LIBINTL" in *$LIBICONV*)
2133 AC_ARG_ENABLE(secureplt,
2134 [AS_HELP_STRING([--enable-secureplt],
2135 [enable -msecure-plt by default for PowerPC])],
2138 AC_ARG_ENABLE(mingw-wildcard,
2139 [AS_HELP_STRING([--enable-mingw-wildcard],
2140 [Set whether to expand wildcard on command-line.
2141 Default to platform configuration])],
2142 [],[enable_mingw_wildcard=platform])
2143 AS_IF([test x"$enable_mingw_wildcard" != xplatform ],
2144 [AC_DEFINE_UNQUOTED(MINGW_DOWILDCARD,
2145 $(test x"$enable_mingw_wildcard" = xno; echo $?),
2146 [Value to set mingw's _dowildcard to.])])
2148 AC_ARG_ENABLE(large-address-aware,
2149 [AS_HELP_STRING([--enable-large-address-aware],
2150 [Link mingw executables with --large-address-aware])])
2151 AS_IF([test x"$enable_large_address_aware" = xyes],
2152 [AC_DEFINE([MINGW_DEFAULT_LARGE_ADDR_AWARE], 1,
2153 [Define if we should link mingw executables with --large-address-aware])])
2155 AC_ARG_ENABLE(leading-mingw64-underscores,
2156 AS_HELP_STRING([--enable-leading-mingw64-underscores],
2157 [enable leading underscores on 64 bit mingw targets]),
2159 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
2160 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
2161 [Define if we should use leading underscore on 64 bit mingw targets])])
2164 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
2167 AC_ARG_ENABLE(frame-pointer,
2168 [AS_HELP_STRING([--enable-frame-pointer],
2169 [enable -fno-omit-frame-pointer by default for x86])], [],
2172 linux* | gnu* | darwin[[8912]]* | cygwin* | mingw*)
2173 # Enable -fomit-frame-pointer by default for these systems with DWARF2.
2174 enable_frame_pointer=no
2177 enable_frame_pointer=yes
2183 i[[34567]]86-*-* | x86_64-*-*)
2184 if test "x$enable_cld" = xyes; then
2185 tm_defines="${tm_defines} USE_IX86_CLD=1"
2187 if test "x$enable_frame_pointer" = xyes; then
2188 tm_defines="${tm_defines} USE_IX86_FRAME_POINTER=1"
2193 # Windows32 Registry support for specifying GCC installation paths.
2194 AC_ARG_ENABLE(win32-registry,
2195 [AS_HELP_STRING([--disable-win32-registry],
2196 [disable lookup of installation paths in the
2197 Registry on Windows hosts])
2198 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
2199 AS_HELP_STRING([--enable-win32-registry=KEY],
2200 [use KEY instead of GCC version as the last portion
2201 of the registry key])],,)
2204 win32 | pe | cygwin* | mingw32*)
2205 if test "x$enable_win32_registry" != xno; then
2206 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
2209 if test "x$enable_win32_registry" != xno; then
2210 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
2211 [Define to 1 if installation paths should be looked up in the Windows
2212 Registry. Ignored on non-Windows hosts.])
2214 if test "x$enable_win32_registry" != xyes \
2215 && test "x$enable_win32_registry" != x; then
2216 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
2217 [Define to be the last component of the Windows registry key under which
2218 to look for installation paths. The full key used will be
2219 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
2220 The default is the GCC version number.])
2226 # Get an absolute path to the GCC top-level source directory
2227 holddir=`${PWDCMD-pwd}`
2229 topdir=`${PWDCMD-pwd}`
2232 # Conditionalize the makefile for this host machine.
2234 for f in ${host_xmake_file}
2236 if test -f ${srcdir}/config/$f
2238 xmake_file="${xmake_file} \$(srcdir)/config/$f"
2242 # Conditionalize the makefile for this target machine.
2244 for f in ${tmake_file}
2246 if test -f ${srcdir}/config/$f
2248 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
2251 tmake_file="${tmake_file_}${omp_device_property_tmake_file}"
2253 out_object_file=`basename $out_file .c`.o
2254 common_out_object_file=`basename $common_out_file .c`.o
2256 tm_file_list="options.h"
2257 tm_include_list="options.h insn-constants.h"
2258 for f in $tm_file; do
2261 f=`echo $f | sed 's/^..//'`
2262 tm_file_list="${tm_file_list} $f"
2263 tm_include_list="${tm_include_list} $f"
2266 tm_file_list="${tm_file_list} \$(srcdir)/$f"
2267 tm_include_list="${tm_include_list} $f"
2270 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
2271 tm_include_list="${tm_include_list} config/$f"
2278 for f in $tm_p_file; do
2281 tm_p_file_list="${tm_p_file_list} $f"
2282 tm_p_include_list="${tm_p_include_list} $f"
2285 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
2286 tm_p_include_list="${tm_p_include_list} config/$f"
2291 tm_d_include_list="options.h insn-constants.h"
2292 for f in $tm_d_file; do
2295 tm_d_file_list="${tm_d_file_list} \$(srcdir)/$f"
2296 tm_d_include_list="${tm_d_include_list} $f"
2299 tm_d_file_list="${tm_d_file_list} \$(srcdir)/config/$f"
2300 tm_d_include_list="${tm_d_include_list} config/$f"
2307 for f in $xm_file; do
2310 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
2311 xm_include_list="${xm_include_list} $f"
2314 xm_file_list="${xm_file_list} $f"
2315 xm_include_list="${xm_include_list} $f"
2318 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
2319 xm_include_list="${xm_include_list} config/$f"
2325 host_xm_include_list=
2326 for f in $host_xm_file; do
2329 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
2330 host_xm_include_list="${host_xm_include_list} $f"
2333 host_xm_file_list="${host_xm_file_list} $f"
2334 host_xm_include_list="${host_xm_include_list} $f"
2337 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
2338 host_xm_include_list="${host_xm_include_list} config/$f"
2344 for f in $build_xm_file; do
2347 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
2348 build_xm_include_list="${build_xm_include_list} $f"
2350 auto-build.h | auto-host.h )
2351 build_xm_file_list="${build_xm_file_list} $f"
2352 build_xm_include_list="${build_xm_include_list} $f"
2355 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
2356 build_xm_include_list="${build_xm_include_list} config/$f"
2361 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
2362 # cross-compiler which does not use the native headers and libraries.
2363 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
2364 CROSS= AC_SUBST(CROSS)
2365 ALL=all.internal AC_SUBST(ALL)
2366 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
2367 BUILD_SYSTEM_HEADER_DIR=$SYSTEM_HEADER_DIR AC_SUBST(BUILD_SYSTEM_HEADER_DIR)
2369 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x ||
2370 test x$build != x$host || test "x$with_build_sysroot" != x; then
2371 if test "x$with_build_sysroot" != x; then
2372 BUILD_SYSTEM_HEADER_DIR=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
2374 BUILD_SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2377 if test x$host != x$target
2379 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
2381 SYSTEM_HEADER_DIR=$BUILD_SYSTEM_HEADER_DIR
2382 elif test "x$TARGET_SYSTEM_ROOT" != x; then
2383 SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2386 if test "x$with_build_sysroot" != "x"; then
2387 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
2388 elif test "x$with_sysroot" = x; then
2389 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
2390 elif test "x$with_sysroot" = xyes; then
2391 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
2393 target_header_dir="${with_sysroot}${native_system_header_dir}"
2396 target_header_dir=${native_system_header_dir}
2399 # If this is a cross-compiler that does not
2400 # have its own set of headers then define
2403 # If this is using newlib, without having the headers available now,
2404 # then define inhibit_libc in LIBGCC2_CFLAGS.
2405 # This prevents libgcc2 from containing any code which requires libc
2407 : ${inhibit_libc=false}
2408 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
2409 test x$with_newlib = xyes ; } &&
2410 { test "x$with_headers" = xno || test ! -f "$target_header_dir/stdio.h"; } ; then
2413 AC_SUBST(inhibit_libc)
2415 # When building gcc with a cross-compiler, we need to adjust things so
2416 # that the generator programs are still built with the native compiler.
2417 # Also, we cannot run fixincludes.
2419 # These are the normal (build=host) settings:
2420 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
2421 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
2422 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
2423 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
2424 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
2425 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
2427 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS)' AC_SUBST(BUILD_NO_PIE_CFLAGS)
2428 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG)' AC_SUBST(BUILD_NO_PIE_FLAG)
2430 # And these apply if build != host, or we are generating coverage data
2431 if test x$build != x$host || test "x$coverage_flags" != x
2433 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
2434 BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CXXFLAGS_FOR_BUILD)'
2435 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
2437 NO_PIE_CFLAGS_FOR_BUILD=${NO_PIE_CFLAGS_FOR_BUILD-${NO_PIE_CFLAGS}}
2438 NO_PIE_FLAG_FOR_BUILD=${NO_PIE_FLAG_FOR_BUILD-${NO_PIE_FLAG}}
2439 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS_FOR_BUILD)'
2440 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG_FOR_BUILD)'
2442 AC_SUBST(NO_PIE_CFLAGS_FOR_BUILD)
2443 AC_SUBST(NO_PIE_FLAG_FOR_BUILD)
2445 # Expand extra_headers to include complete path.
2446 # This substitutes for lots of t-* files.
2448 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
2449 for file in ${extra_headers} ; do
2450 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
2453 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
2454 if test x"$use_gcc_tgmath" = xyes
2455 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
2458 # Define collect2 in Makefile.
2459 case $host_can_use_collect2 in
2461 *) collect2='collect2$(exeext)' ;;
2463 AC_SUBST([collect2])
2465 # Add a definition of USE_COLLECT2 if system wants one.
2466 case $use_collect2 in
2467 no) use_collect2= ;;
2470 host_xm_defines="${host_xm_defines} USE_COLLECT2"
2471 xm_defines="${xm_defines} USE_COLLECT2"
2472 case $host_can_use_collect2 in
2474 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
2480 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
2481 [Define to the name of the LTO plugin DSO that must be
2482 passed to the linker's -plugin=LIB option.])
2484 # ---------------------------
2485 # Assembler & linker features
2486 # ---------------------------
2488 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
2489 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
2490 # However when ld-new is first executed from the build tree, libtool will
2491 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
2492 # to the build tree. While doing this we need to use the previous-stage
2493 # linker, or we have an infinite loop. The presence of a shell script as
2494 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
2495 # the gcc/collect-ld script. So we need to know how libtool works, or
2496 # exec-tool will fail.
2498 m4_defun([_LT_CONFIG_COMMANDS], [])
2501 AC_SUBST(enable_fast_install)
2503 # Identify the assembler which will work hand-in-glove with the newly
2504 # built GCC, so that we can examine its features. This is the assembler
2505 # which will be driven by the driver program.
2507 # If build != host, and we aren't building gas in-tree, we identify a
2508 # build->target assembler and hope that it will have the same features
2509 # as the host->target assembler we'll be using.
2510 gcc_cv_gas_major_version=
2511 gcc_cv_gas_minor_version=
2512 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
2514 m4_pattern_allow([AS_FOR_TARGET])dnl
2515 AS_VAR_SET_IF(gcc_cv_as,, [
2516 if test -x "$DEFAULT_ASSEMBLER"; then
2517 gcc_cv_as="$DEFAULT_ASSEMBLER"
2518 elif test -f $gcc_cv_as_gas_srcdir/configure.ac \
2519 && test -f ../gas/Makefile \
2520 && test x$build = x$host; then
2521 gcc_cv_as=../gas/as-new$build_exeext
2522 elif test -x as$build_exeext; then
2523 # Build using assembler in the current directory.
2524 gcc_cv_as=./as$build_exeext
2525 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
2526 gcc_cv_as="$AS_FOR_TARGET"
2528 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
2531 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
2532 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
2533 case "$ORIGINAL_AS_FOR_TARGET" in
2534 ./as | ./as$build_exeext) ;;
2535 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2538 AC_MSG_CHECKING(what assembler to use)
2539 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
2540 # Single tree build which includes gas. We want to prefer it
2541 # over whatever linker top-level may have detected, since
2542 # we'll use what we're building after installation anyway.
2543 AC_MSG_RESULT(newly built gas)
2545 _gcc_COMPUTE_GAS_VERSION
2546 in_tree_gas_is_elf=no
2547 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
2548 || (grep 'obj_format = multi' ../gas/Makefile \
2549 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
2551 in_tree_gas_is_elf=yes
2554 AC_MSG_RESULT($gcc_cv_as)
2560 [[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]],
2561 [case "${enableval}" in
2567 install_gold_as_default=no
2569 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
2570 [case "${enableval}" in
2572 install_gold_as_default=yes
2575 if test x${default_ld} != x; then
2576 install_gold_as_default=yes
2582 AC_MSG_ERROR([invalid --enable-gold argument])
2586 # Identify the linker which will work hand-in-glove with the newly
2587 # built GCC, so that we can examine its features. This is the linker
2588 # which will be driven by the driver program.
2590 # If build != host, and we aren't building gas in-tree, we identify a
2591 # build->target linker and hope that it will have the same features
2592 # as the host->target linker we'll be using.
2593 gcc_cv_gld_major_version=
2594 gcc_cv_gld_minor_version=
2595 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2596 gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold
2597 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2599 AS_VAR_SET_IF(gcc_cv_ld,, [
2600 if test -x "$DEFAULT_LINKER"; then
2601 gcc_cv_ld="$DEFAULT_LINKER"
2602 elif test $install_gold_as_default = yes \
2603 && test -f $gcc_cv_ld_gold_srcdir/configure.ac \
2604 && test -f ../gold/Makefile \
2605 && test x$build = x$host; then
2606 gcc_cv_ld=../gold/ld-new$build_exeext
2607 elif test -f $gcc_cv_ld_gld_srcdir/configure.ac \
2608 && test -f ../ld/Makefile \
2609 && test x$build = x$host; then
2610 gcc_cv_ld=../ld/ld-new$build_exeext
2611 elif test -x collect-ld$build_exeext; then
2612 # Build using linker in the current directory.
2613 gcc_cv_ld=./collect-ld$build_exeext
2614 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2615 gcc_cv_ld="$LD_FOR_TARGET"
2617 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2620 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2621 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2622 # if the PLUGIN_LD is set ld-new, just have it as ld
2623 # as that is the installed named.
2624 if test x$PLUGIN_LD_SUFFIX = xld-new \
2625 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2628 AC_ARG_WITH(plugin-ld,
2629 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2630 [if test x"$withval" != x; then
2631 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2632 PLUGIN_LD_SUFFIX="$withval"
2634 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2635 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2637 # Check to see if we are using gold instead of ld
2638 AC_MSG_CHECKING(whether we are using gold)
2640 if test x$gcc_cv_ld != x; then
2641 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2642 | grep "GNU gold" > /dev/null; then
2646 AC_MSG_RESULT($ld_is_gold)
2648 AC_MSG_CHECKING(gold linker with split stack support as non default)
2649 # Check to see if default ld is not gold, but gold is
2650 # available and has support for split stack. If gcc was configured
2651 # with gold then no checking is done.
2653 if test x$ld_is_gold = xno && which ${gcc_cv_ld}.gold >/dev/null 2>&1; then
2655 # For platforms other than powerpc64*, enable as appropriate.
2658 ld_gold=`which ${gcc_cv_ld}.gold`
2659 # Make sure this gold has minimal split stack support
2660 if $ld_gold --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then
2661 ld_vers=`$ld_gold --version | sed 1q`
2662 gold_vers=`echo $ld_vers | sed -n \
2663 -e 's,^[[^)]]*[[ ]]\([[0-9]][[0-9]]*\.[[0-9]][[0-9]]*[[^)]]*\)) .*$,\1,p'`
2665 # check that the gold version contains the complete split stack support
2666 # on powerpc64 big and little endian
2668 case "$gold_vers" in
2669 2.25.[[1-9]]*|2.2[[6-9]][[.0-9]]*|2.[[3-9]][[.0-9]]*|[[3-9]].[[.0-9]]*) gold_non_default=yes
2671 *) gold_non_default=no
2677 if test $gold_non_default = yes; then
2678 AC_DEFINE(HAVE_GOLD_NON_DEFAULT_SPLIT_STACK, 1,
2679 [Define if the gold linker supports split stack and is available as a non-default])
2682 AC_MSG_RESULT($gold_non_default)
2684 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2685 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2686 case "$ORIGINAL_LD_FOR_TARGET" in
2687 ./collect-ld | ./collect-ld$build_exeext) ;;
2688 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2691 AC_MSG_CHECKING(what linker to use)
2692 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2693 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2694 # Single tree build which includes ld. We want to prefer it
2695 # over whatever linker top-level may have detected, since
2696 # we'll use what we're building after installation anyway.
2697 AC_MSG_RESULT(newly built ld)
2699 in_tree_ld_is_elf=no
2700 if (grep 'EMUL = .*elf' ../ld/Makefile \
2701 || grep 'EMUL = .*linux' ../ld/Makefile \
2702 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2703 in_tree_ld_is_elf=yes
2704 elif test "$ld_is_gold" = yes; then
2705 in_tree_ld_is_elf=yes
2707 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
2710 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2711 if test x$gcc_cv_gld_version != x; then
2715 case $gcc_cv_gld_version in
2718 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2721 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2722 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2724 ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext
2725 ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext
2727 AC_MSG_RESULT($gcc_cv_ld)
2729 gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext`
2730 ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext
2731 ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext
2734 AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET)
2735 AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET)
2737 # Figure out what nm we will be using.
2738 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2739 AS_VAR_SET_IF(gcc_cv_nm,, [
2740 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2741 && test -f ../binutils/Makefile \
2742 && test x$build = x$host; then
2743 gcc_cv_nm=../binutils/nm-new$build_exeext
2744 elif test -x nm$build_exeext; then
2745 gcc_cv_nm=./nm$build_exeext
2746 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2747 gcc_cv_nm="$NM_FOR_TARGET"
2749 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2752 AC_MSG_CHECKING(what nm to use)
2753 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2754 # Single tree build which includes binutils.
2755 AC_MSG_RESULT(newly built nm)
2758 AC_MSG_RESULT($gcc_cv_nm)
2762 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2763 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2764 case "$ORIGINAL_NM_FOR_TARGET" in
2765 ./nm | ./nm$build_exeext) ;;
2766 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2770 # Figure out what objdump we will be using.
2771 AS_VAR_SET_IF(gcc_cv_objdump,, [
2772 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2773 && test -f ../binutils/Makefile \
2774 && test x$build = x$host; then
2775 # Single tree build which includes binutils.
2776 gcc_cv_objdump=../binutils/objdump$build_exeext
2777 elif test -x objdump$build_exeext; then
2778 gcc_cv_objdump=./objdump$build_exeext
2779 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2780 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2782 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2785 AC_MSG_CHECKING(what objdump to use)
2786 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2787 # Single tree build which includes binutils.
2788 AC_MSG_RESULT(newly built objdump)
2789 elif test x$gcc_cv_objdump = x; then
2790 AC_MSG_RESULT(not found)
2792 AC_MSG_RESULT($gcc_cv_objdump)
2795 # Figure out what readelf we will be using.
2796 AS_VAR_SET_IF(gcc_cv_readelf,, [
2797 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2798 && test -f ../binutils/Makefile \
2799 && test x$build = x$host; then
2800 # Single tree build which includes binutils.
2801 gcc_cv_readelf=../binutils/readelf$build_exeext
2802 elif test -x readelf$build_exeext; then
2803 gcc_cv_readelf=./readelf$build_exeext
2804 elif ( set dummy $READELF_FOR_TARGET; test -x $[2] ); then
2805 gcc_cv_readelf="$READELF_FOR_TARGET"
2807 AC_PATH_PROG(gcc_cv_readelf, $READELF_FOR_TARGET)
2810 AC_MSG_CHECKING(what readelf to use)
2811 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2812 # Single tree build which includes binutils.
2813 AC_MSG_RESULT(newly built readelf)
2814 elif test x$gcc_cv_readelf = x; then
2815 AC_MSG_RESULT(not found)
2817 AC_MSG_RESULT($gcc_cv_readelf)
2820 # Figure out what otool we will be using.
2821 AS_VAR_SET_IF(gcc_cv_otool,, [
2822 if test -x otool$build_exeext; then
2823 gcc_cv_otool=./otool$build_exeext
2824 elif ( set dummy $OTOOL_FOR_TARGET; test -x $[2] ); then
2825 gcc_cv_otool="$OTOOL_FOR_TARGET"
2827 AC_PATH_PROG(gcc_cv_otool, $OTOOL_FOR_TARGET)
2830 AC_MSG_CHECKING(what otool to use)
2831 if test x$gcc_cv_otool = x; then
2832 AC_MSG_RESULT(not found)
2834 AC_MSG_RESULT($gcc_cv_otool)
2837 # Figure out what assembler alignment features are present.
2838 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2842 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2843 [Define if your assembler supports .balign and .p2align.])])
2845 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2848 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2849 [Define if your assembler supports specifying the maximum number
2850 of bytes to skip when using the GAS .p2align command.])])
2852 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2855 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2856 [Define if your assembler supports .literal16.])])
2858 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2860 [conftest_label1: .word 0
2862 conftest_label2: .word 0
2864 [if test x$gcc_cv_nm != x; then
2865 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2866 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2867 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2869 else gcc_cv_as_subsection_m1=yes
2871 rm -f conftest.nm1 conftest.nm2
2873 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2874 [Define if your assembler supports .subsection and .subsection -1 starts
2875 emitting at the beginning of your section.])])
2877 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2880 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2882 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2884 [ .weakref foobar, barfnot],,
2885 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2887 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2890 .NSUBSPA $CODE$,COMDAT],,
2891 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2893 # .hidden needs to be supported in both the assembler and the linker,
2894 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2895 # This is irritatingly difficult to feature test for; we have to check the
2896 # date string after the version number. If we've got an in-tree
2897 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2899 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2902 conftest_s=' .globl foobar,hidden'
2905 conftest_s=' .hidden foobar
2909 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2910 [elf,2,13,0],, [$conftest_s])
2913 # Darwin as has some visibility support, though with a different syntax.
2914 gcc_cv_as_hidden=yes
2918 # gnu_indirect_function type is an extension proposed at
2919 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2920 # selection of function implementation
2921 AC_ARG_ENABLE(gnu-indirect-function,
2922 [AS_HELP_STRING([--enable-gnu-indirect-function],
2923 [enable the use of the @gnu_indirect_function to glibc systems])],
2924 [case $enable_gnu_indirect_function in
2926 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2927 Valid choices are 'yes' and 'no'.]) ;;
2929 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2933 AC_MSG_CHECKING(linker ifunc IRELATIVE support)
2934 cat > conftest.s <<EOF
2936 .type foo_resolver, @function
2939 .size foo_resolver, .-foo_resolver
2942 .type foo, %gnu_indirect_function
2943 .set foo, foo_resolver
2946 .type bar, @function
2952 if test x$gcc_cv_as != x \
2953 && test x$gcc_cv_ld != x \
2954 && test x$gcc_cv_readelf != x \
2955 && $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2956 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1 \
2957 && $gcc_cv_readelf --relocs --wide conftest \
2958 | grep R_RISCV_IRELATIVE > /dev/null 2>&1; then
2959 enable_gnu_indirect_function=yes
2961 rm -f conftest conftest.o conftest.s
2962 AC_MSG_RESULT($enable_gnu_indirect_function)
2966 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
2967 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
2968 [Define if your system supports gnu indirect functions.])
2972 if test $in_tree_ld != yes ; then
2973 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2974 if echo "$ld_ver" | grep GNU > /dev/null; then
2975 if test x"$ld_is_gold" = xyes; then
2976 # GNU gold --version looks like this:
2978 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2980 # We extract the binutils version which is more familiar and specific
2981 # than the gold version.
2982 ld_vers=`echo $ld_ver | sed -n \
2983 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2985 # GNU ld --version looks like this:
2987 # GNU ld (GNU Binutils) 2.21.51.20110225
2988 ld_vers=`echo $ld_ver | sed -n \
2989 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2991 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)\(-*\)\([01][0-9]\)\2\([0-3][0-9]\).*$,\1\3\4,p'`
2992 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2993 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2994 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2998 # Solaris 2 ld -V output looks like this for a regular version:
3000 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
3002 # but test versions add stuff at the end:
3004 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
3006 # ld and ld.so.1 are guaranteed to be updated in lockstep, so ld version
3007 # numbers can be used in ld.so.1 feature checks even if a different
3008 # linker is configured.
3009 ld_ver=`$gcc_cv_ld -V 2>&1`
3010 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
3011 ld_vers=`echo $ld_ver | sed -n \
3012 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
3013 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3014 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3022 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
3023 [[if test $in_tree_ld = yes ; then
3025 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
3026 && test $in_tree_ld_is_elf = yes; then
3027 gcc_cv_ld_hidden=yes
3030 gcc_cv_ld_hidden=yes
3031 if test x"$ld_is_gold" = xyes; then
3033 elif echo "$ld_ver" | grep GNU > /dev/null; then
3034 if test 0"$ld_date" -lt 20020404; then
3035 if test -n "$ld_date"; then
3036 # If there was date string, but was earlier than 2002-04-04, fail
3038 elif test -z "$ld_vers"; then
3039 # If there was no date string nor ld version number, something is wrong
3042 test -z "$ld_vers_patch" && ld_vers_patch=0
3043 if test "$ld_vers_major" -lt 2; then
3045 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
3046 gcc_cv_ld_hidden="no"
3047 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
3055 gcc_cv_ld_hidden=yes
3058 # Darwin ld has some visibility support.
3059 gcc_cv_ld_hidden=yes
3061 hppa64*-*-hpux* | ia64*-*-hpux*)
3062 gcc_cv_ld_hidden=yes
3065 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
3066 # .symbolic was only added in Solaris 9 12/02.
3067 gcc_cv_ld_hidden=yes
3075 libgcc_visibility=no
3076 AC_SUBST(libgcc_visibility)
3077 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
3078 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
3079 libgcc_visibility=yes
3080 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
3081 [Define if your assembler and linker support .hidden.])
3084 AC_MSG_CHECKING(linker read-only and read-write section mixing)
3085 gcc_cv_ld_ro_rw_mix=unknown
3086 if test $in_tree_ld = yes ; then
3087 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
3088 && test $in_tree_ld_is_elf = yes; then
3089 gcc_cv_ld_ro_rw_mix=read-write
3091 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3092 echo '.section myfoosect, "a"' > conftest1.s
3093 echo '.section myfoosect, "aw"' > conftest2.s
3094 echo '.byte 1' >> conftest2.s
3095 echo '.section myfoosect, "a"' > conftest3.s
3096 echo '.byte 0' >> conftest3.s
3097 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
3098 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
3099 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
3100 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
3101 conftest2.o conftest3.o > /dev/null 2>&1; then
3102 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
3103 | sed -e '/myfoosect/!d' -e N`
3104 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
3105 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
3106 gcc_cv_ld_ro_rw_mix=read-only
3108 gcc_cv_ld_ro_rw_mix=read-write
3113 rm -f conftest.* conftest[123].*
3116 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
3117 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
3118 [Define if your linker links a mix of read-only
3119 and read-write sections into a read-write section.])
3121 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
3123 gcc_AC_INITFINI_ARRAY
3125 # Check if we have .[us]leb128, and support symbol arithmetic with it.
3126 # Older versions of GAS and some non-GNU assemblers, have a bugs handling
3127 # these directives, even when they appear to accept them.
3128 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
3136 .uleb128 0x8000000000000000
3139 if test "x$gcc_cv_objdump" != x; then
3140 if $gcc_cv_objdump -s conftest.o 2>/dev/null \
3141 | grep '04800a8e 78808080 80808080 808001' >/dev/null; then
3142 gcc_cv_as_leb128=yes
3144 elif test "x$gcc_cv_otool" != x; then
3145 if $gcc_cv_otool -d conftest.o 2>/dev/null \
3146 | grep '04 80 0a 8e 78 80 80 80 80 80 80 80 80 80 01' >/dev/null; then
3147 gcc_cv_as_leb128=yes
3150 # play safe, assume the assembler is broken.
3154 [AC_DEFINE(HAVE_AS_LEB128, 1,
3155 [Define if your assembler supports .sleb128 and .uleb128.])],
3156 [AC_DEFINE(HAVE_AS_LEB128, 0,
3157 [Define if your assembler supports .sleb128 and .uleb128.])])
3159 # Determine if an .eh_frame section is read-only.
3160 gcc_fn_eh_frame_ro () {
3161 $gcc_cv_as $1 -o conftest.o conftest.s > /dev/null 2>&1 && \
3162 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
3163 sed -e '/.eh_frame/!d' -e N | grep READONLY > /dev/null
3166 # Check if we have assembler support for unwind directives.
3167 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
3174 .cfi_escape 1, 2, 3, 4, 5
3178 # If the linker used on Solaris (like Sun ld) isn't capable of merging
3179 # read-only and read-write sections, we need to make sure that the
3180 # assembler used emits read-write .eh_frame sections.
3181 if test "x$gcc_cv_ld_ro_rw_mix" = xread-write; then
3182 gcc_cv_as_cfi_directive=yes
3183 elif test "x$gcc_cv_objdump" = x; then
3184 # No objdump, err on the side of caution.
3185 gcc_cv_as_cfi_directive=no
3187 if test x$gas = xyes; then
3195 sparc*-*-solaris2.*)
3196 # On Solaris/SPARC, .eh_frame sections should always be read-write.
3197 if gcc_fn_eh_frame_ro $as_32_opt \
3198 || gcc_fn_eh_frame_ro $as_64_opt; then
3199 gcc_cv_as_cfi_directive=no
3201 gcc_cv_as_cfi_directive=yes
3204 i?86-*-solaris2.* | x86_64-*-solaris2.*)
3205 # On Solaris/x86, make sure that GCC and assembler agree on using
3206 # read-only .eh_frame sections for 64-bit.
3207 if gcc_fn_eh_frame_ro $as_32_opt; then
3208 gcc_cv_as_cfi_directive=no
3209 elif gcc_fn_eh_frame_ro $as_64_opt; then
3210 gcc_cv_as_cfi_directive=yes
3212 gcc_cv_as_cfi_directive=no
3219 gcc_cv_as_cfi_directive=yes
3222 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
3223 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
3227 .cfi_adjust_cfa_offset 64
3229 .cfi_adjust_cfa_offset 128
3232 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
3233 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
3234 gcc_cv_as_cfi_advance_working=yes
3238 # no objdump, err on the side of caution
3239 gcc_cv_as_cfi_advance_working=no
3241 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
3242 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
3243 [`if test $gcc_cv_as_cfi_directive = yes \
3244 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
3245 [Define 0/1 if your assembler supports CFI directives.])
3247 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
3248 gcc_GAS_CHECK_FEATURE([cfi personality directive],
3249 gcc_cv_as_cfi_personality_directive, ,,
3252 .cfi_personality 0, symbol
3254 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
3255 [`if test $gcc_cv_as_cfi_personality_directive = yes; then echo 1; else echo 0; fi`],
3256 [Define 0/1 if your assembler supports .cfi_personality.])
3258 gcc_GAS_CHECK_FEATURE([cfi sections directive],
3259 gcc_cv_as_cfi_sections_directive, ,,
3261 .cfi_sections .debug_frame, .eh_frame
3265 win32 | pe | cygwin* | mingw32*)
3266 # Need to check that we generated the correct relocation for the
3267 # .debug_frame section. This was fixed for binutils 2.21.
3268 gcc_cv_as_cfi_sections_directive=no
3269 if test "x$gcc_cv_objdump" != x; then
3270 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
3271 grep secrel > /dev/null; then
3272 gcc_cv_as_cfi_sections_directive=yes
3277 gcc_cv_as_cfi_sections_directive=yes
3280 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
3281 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
3282 [`if test $gcc_cv_as_cfi_sections_directive = yes; then echo 1; else echo 0; fi`],
3283 [Define 0/1 if your assembler supports .cfi_sections.])
3285 # GAS versions up to and including 2.11.0 may mis-optimize
3287 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
3295 .section .eh_frame,"aw",@progbits
3297 .4byte .LECIE1-.LSCIE1
3311 .4byte .LEFDE1-.LASFDE1
3313 .4byte .LASFDE1-__FRAME_BEGIN__
3321 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
3322 cat > conftest.lit <<EOF
3323 0000 10000000 00000000 017a0001 781a0004 .........z..x...
3324 0010 01000000 12000000 18000000 00000000 ................
3325 0020 08000000 04080000 0044 .........D @&t@
3327 cat > conftest.big <<EOF
3328 0000 00000010 00000000 017a0001 781a0004 .........z..x...
3329 0010 00000001 00000012 00000018 00000000 ................
3330 0020 00000008 04000000 0844 .........D @&t@
3332 # If the assembler didn't choke, and we can objdump,
3333 # and we got the correct data, then succeed.
3334 # The text in the here-document typically retains its unix-style line
3335 # endings, while the output of objdump will use host line endings.
3336 # Therefore, use diff -b for the comparisons.
3337 if test x$gcc_cv_objdump != x \
3338 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
3339 | tail -3 > conftest.got \
3340 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
3341 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
3343 gcc_cv_as_eh_frame=yes
3344 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
3345 gcc_cv_as_eh_frame=buggy
3347 # Uh oh, what do we do now?
3348 gcc_cv_as_eh_frame=no
3351 if test $gcc_cv_as_eh_frame = buggy; then
3352 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
3353 [Define if your assembler mis-optimizes .eh_frame data.])
3356 # Test if the assembler supports the section flag 'e' or #exclude for
3357 # specifying an excluded section.
3358 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_e,
3359 [2,22,51], [--fatal-warnings],
3362 if test $gcc_cv_as_section_exclude_e = no; then
3364 # Solaris as uses #exclude instead.
3368 conftest_s='.section "foo1", #exclude'
3370 i?86-*-solaris2* | x86_64-*-solaris2*)
3371 conftest_s='.section foo1, #exclude'
3376 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_hash,,,
3380 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3381 [`if test $gcc_cv_as_section_exclude_e = yes || test $gcc_cv_as_section_exclude_hash = yes; then echo 1; else echo 0; fi`],
3382 [Define if your assembler supports specifying the exclude section flag.])
3384 # Test if the assembler supports the section flag 'R' for specifying
3385 # section with SHF_GNU_RETAIN.
3387 # Solaris may use GNU assembler with Solairs ld. Even if GNU
3388 # assembler supports the section flag 'R', it doesn't mean that
3389 # Solairs ld supports it.
3391 gcc_cv_as_shf_gnu_retain=no
3394 gcc_GAS_CHECK_FEATURE([section 'R' flag], gcc_cv_as_shf_gnu_retain,
3395 [elf,2,36,0], [--fatal-warnings],
3396 [.section .foo,"awR",%progbits
3400 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_GNU_RETAIN,
3401 [`if test $gcc_cv_as_shf_gnu_retain = yes; then echo 1; else echo 0; fi`],
3402 [Define 0/1 if your assembler supports marking sections with SHF_GNU_RETAIN flag.])
3404 # Test if the assembler supports the section flag 'o' for specifying
3405 # section with link-order.
3407 # Solaris may use GNU assembler with Solairs ld. Even if GNU
3408 # assembler supports the section flag 'o', it doesn't mean that
3409 # Solairs ld supports it.
3411 gcc_cv_as_section_link_order=no
3414 gcc_GAS_CHECK_FEATURE([section 'o' flag], gcc_cv_as_section_link_order,
3415 [2,35,0], [--fatal-warnings],
3418 .section __patchable_function_entries,"awo",%progbits,.foo
3422 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_LINK_ORDER,
3423 [`if test $gcc_cv_as_section_link_order = yes; then echo 1; else echo 0; fi`],
3424 [Define 0/1 if your assembler supports 'o' flag in .section directive.])
3426 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
3427 [elf,2,12,0], [--fatal-warnings],
3428 [.section .rodata.str, "aMS", @progbits, 1])
3429 if test $gcc_cv_as_shf_merge = no; then
3430 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
3431 [elf,2,12,0], [--fatal-warnings],
3432 [.section .rodata.str, "aMS", %progbits, 1])
3434 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
3435 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
3436 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
3438 gcc_cv_ld_aligned_shf_merge=yes
3440 # SHF_MERGE support is broken in Solaris ld up to Solaris 11.3/SPARC for
3442 sparc*-*-solaris2.11*)
3443 if test x"$gnu_ld" = xno \
3444 && test "$ld_vers_major" -lt 2 && test "$ld_vers_minor" -lt 3159; then
3445 gcc_cv_ld_aligned_shf_merge=no
3449 AC_DEFINE_UNQUOTED(HAVE_LD_ALIGNED_SHF_MERGE,
3450 [`if test $gcc_cv_ld_aligned_shf_merge = yes; then echo 1; else echo 0; fi`],
3451 [Define 0/1 if your linker supports the SHF_MERGE flag with section alignment > 1.])
3453 gcc_GAS_CHECK_FEATURE([stabs directive], gcc_cv_as_stabs_directive, ,,
3454 [.stabs "gcc2_compiled.",60,0,0,0],,
3455 [AC_DEFINE(HAVE_AS_STABS_DIRECTIVE, 1,
3456 [Define if your assembler supports .stabs.])])
3458 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
3459 gcc_cv_as_comdat_group,
3460 [elf,2,16,0], [--fatal-warnings],
3461 [.section .text,"axG",@progbits,.foo,comdat])
3462 if test $gcc_cv_as_comdat_group = yes; then
3463 gcc_cv_as_comdat_group_percent=no
3464 gcc_cv_as_comdat_group_group=no
3466 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
3467 gcc_cv_as_comdat_group_percent,
3468 [elf,2,16,0], [--fatal-warnings],
3469 [.section .text,"axG",%progbits,.foo,comdat])
3470 if test $gcc_cv_as_comdat_group_percent = yes; then
3471 gcc_cv_as_comdat_group_group=no
3474 # Sun as uses a completely different syntax.
3479 .group foo,".text%foo",#comdat
3480 .section ".text%foo", #alloc,#execinstr,#progbits
3485 i?86-*-solaris2* | x86_64-*-solaris2*)
3487 .group foo,.text%foo,#comdat
3488 .section .text%foo, "ax", @progbits
3494 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
3495 gcc_cv_as_comdat_group_group,
3499 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
3500 gcc_cv_as_comdat_group_group=no
3504 if test x"$ld_is_gold" = xyes; then
3506 elif test $in_tree_ld = yes ; then
3508 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3509 && test $in_tree_ld_is_elf = yes; then
3512 elif echo "$ld_ver" | grep GNU > /dev/null; then
3514 if test 0"$ld_date" -lt 20050308; then
3515 if test -n "$ld_date"; then
3516 # If there was date string, but was earlier than 2005-03-08, fail
3518 elif test "$ld_vers_major" -lt 2; then
3520 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
3527 *-*-solaris2.1[1-9]*)
3529 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
3530 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
3533 # If using Sun as for COMDAT group as emitted by GCC, one needs at
3534 # least ld version 1.2267.
3535 if test "$ld_vers_major" -gt 1; then
3537 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
3539 elif test "$ld_vers_minor" -ge 2267; then
3544 # Assume linkers other than GNU ld don't support COMDAT group.
3550 # Allow overriding the automatic COMDAT group tests above.
3551 AC_ARG_ENABLE(comdat,
3552 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
3553 [comdat_group="$enable_comdat"])
3554 if test $comdat_group = no; then
3555 gcc_cv_as_comdat_group=no
3556 gcc_cv_as_comdat_group_percent=no
3557 gcc_cv_as_comdat_group_group=no
3559 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
3560 [`if test $gcc_cv_as_comdat_group = yes \
3561 || test $gcc_cv_as_comdat_group_percent = yes \
3562 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
3563 [Define 0/1 if your assembler and linker support COMDAT groups.])
3565 # Restrict this test to Solaris/x86: other targets define this statically.
3567 i?86-*-solaris2* | x86_64-*-solaris2*)
3568 AC_MSG_CHECKING(support for hidden thunks in linkonce sections)
3569 if test $in_tree_ld = yes || echo "$ld_ver" | grep GNU > /dev/null; then
3573 # Full support for hidden thunks in linkonce sections only appeared in
3574 # Solaris 11/OpenSolaris.
3575 *-*-solaris2.1[[1-9]]*)
3583 AC_MSG_RESULT($hidden_linkonce)
3584 AC_DEFINE_UNQUOTED(USE_HIDDEN_LINKONCE,
3585 [`if test $hidden_linkonce = yes; then echo 1; else echo 0; fi`],
3586 [Define 0/1 if your linker supports hidden thunks in linkonce sections.])
3590 gcc_GAS_CHECK_FEATURE([line table is_stmt support],
3595 .loc 1 1 0 is_stmt 1],,
3596 [AC_DEFINE(HAVE_GAS_LOC_STMT, 1,
3597 [Define if your assembler supports the .loc is_stmt sub-directive.])])
3599 gcc_GAS_CHECK_FEATURE([line table discriminator support],
3600 gcc_cv_as_discriminator,
3604 .loc 1 1 0 discriminator 1],,
3605 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
3606 [Define if your assembler supports the .loc discriminator sub-directive.])])
3608 # Catch the newlib flag of the same name so we can gate GCC features on it.
3609 AC_ARG_ENABLE(newlib-nano-formatted-io,
3610 [AS_HELP_STRING([--enable-newlib-nano-formatted-io], [Use nano version
3612 [case "${enableval}" in
3616 AC_MSG_ERROR([unknown newlib-nano-formatted-io setting $enableval])
3620 # Thread-local storage - the check is heavily parameterized.
3629 .section ".tdata","awT",@progbits
3632 ldq $27,__tls_get_addr($29) !literal!1
3633 lda $16,foo($29) !tlsgd!1
3634 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
3635 ldq $27,__tls_get_addr($29) !literal!2
3636 lda $16,foo($29) !tlsldm!2
3637 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
3638 ldq $1,foo($29) !gotdtprel
3639 ldah $2,foo($29) !dtprelhi
3640 lda $3,foo($2) !dtprello
3641 lda $4,foo($29) !dtprel
3642 ldq $1,foo($29) !gottprel
3643 ldah $2,foo($29) !tprelhi
3644 lda $3,foo($2) !tprello
3645 lda $4,foo($29) !tprel'
3648 tls_as_opt=--fatal-warnings
3652 add_s r0,r0, @foo@tpoff'
3656 cris-*-*|crisv32-*-*)
3658 .section ".tdata","awT",@progbits
3665 tls_as_opt=--fatal-warnings
3669 .section ".tdata","awT",@progbits
3681 .section ".tdata","awT",@progbits
3685 addil LT%foo-$tls_gdidx$,gp
3686 ldo RT%foo-$tls_gdidx$(%r1),%arg0
3689 addil LT%foo-$tls_ldidx$,gp
3691 ldo RT%foo-$tls_ldidx$(%r1),%arg0
3692 addil LR%foo-$tls_dtpoff$,%ret0
3693 ldo RR%foo-$tls_dtpoff$(%r1),%t1
3695 addil LT%foo-$tls_ieoff$,gp
3696 ldw RT%foo-$tls_ieoff$(%r1),%t2
3699 addil LR%foo-$tls_leoff$,%t1
3700 ldo RR%foo-$tls_leoff$(%r1),%t2'
3703 tls_as_opt=--fatal-warnings
3707 .section ".tdata","awT",%progbits
3718 i[34567]86-*-* | x86_64-*-*)
3720 i[34567]86-*-solaris2.* | x86_64-*-solaris2.*)
3727 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3729 .section .tdata,"awt",@progbits'
3734 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
3735 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
3739 .section ".tdata","awT",@progbits'
3743 tls_as_opt="--fatal-warnings"
3747 if test x$on_solaris = xyes; then
3749 yes) tls_as_opt="$tls_as_opt --32" ;;
3752 conftest_s="$conftest_s
3756 leal foo@tlsgd(,%ebx,1), %eax
3757 leal foo@tlsldm(%ebx), %eax
3758 leal foo@dtpoff(%eax), %edx
3759 movl foo@gottpoff(%ebx), %eax
3760 subl foo@gottpoff(%ebx), %eax
3761 addl foo@gotntpoff(%ebx), %eax
3762 movl foo@indntpoff, %eax
3763 movl \$foo@tpoff, %eax
3764 subl \$foo@tpoff, %eax
3765 leal foo@ntpoff(%ecx), %eax"
3768 if test x$on_solaris = xyes; then
3770 yes) tls_as_opt="$tls_as_opt --64" ;;
3771 no) tls_as_opt="$tls_as_opt -xarch=amd64" ;;
3774 conftest_s="$conftest_s
3778 leaq foo@tlsgd(%rip), %rdi
3779 leaq foo@tlsld(%rip), %rdi
3780 leaq foo@dtpoff(%rax), %rdx
3781 movq foo@gottpoff(%rip), %rax
3782 movq \$foo@tpoff, %rax"
3788 .section ".tdata","awT",@progbits
3791 addl r16 = @ltoff(@dtpmod(foo#)), gp
3792 addl r17 = @ltoff(@dtprel(foo#)), gp
3793 addl r18 = @ltoff(@tprel(foo#)), gp
3794 addl r19 = @dtprel(foo#), gp
3795 adds r21 = @dtprel(foo#), r13
3796 movl r23 = @dtprel(foo#)
3797 addl r20 = @tprel(foo#), gp
3798 adds r22 = @tprel(foo#), r13
3799 movl r24 = @tprel(foo#)'
3802 tls_as_opt=--fatal-warnings
3806 .section .tdata,"awT",@progbits
3810 addik r5,r20,x@TLSGD
3811 addik r5,r20,x@TLSLDM'
3814 tls_as_opt='--fatal-warnings'
3818 .section .tdata,"awT",@progbits
3822 addiu $4, $28, %tlsgd(x)
3823 addiu $4, $28, %tlsldm(x)
3824 lui $4, %dtprel_hi(x)
3825 addiu $4, $4, %dtprel_lo(x)
3826 lw $4, %gottprel(x)($28)
3827 lui $4, %tprel_hi(x)
3828 addiu $4, $4, %tprel_lo(x)'
3831 tls_as_opt='-32 --fatal-warnings'
3835 .section .tdata,"awT",@progbits
3840 move.l x@TLSGD(%a5),%a0
3841 move.l x@TLSLDM(%a5),%a0
3842 move.l x@TLSLDO(%a5),%a0
3843 move.l x@TLSIE(%a5),%a0
3844 move.l x@TLSLE(%a5),%a0'
3847 tls_as_opt='--fatal-warnings'
3851 .section ".tdata","awT",@progbits'
3854 tls_as_opt="--fatal-warnings"
3858 .section ".tdata","awT",%progbits
3862 add x0, x0, #:tlsgd_lo12:x
3867 tls_as_opt='--fatal-warnings'
3871 .section ".tdata","awT",@progbits
3874 l.movhi r3, tpoffha(foo)
3876 l.lwz r4, tpofflo(foo)(r3)'
3879 tls_as_opt=--fatal-warnings
3883 .extern __get_tpointer
3901 .section ".tdata","awT",@progbits
3909 addi 3,2,ld0@got@tlsgd
3915 addi 3,2,x1@got@tlsld
3921 addis 9,3,x2@dtprel@ha
3922 addi 9,9,x2@dtprel@l
3925 ld 9,x3@got@dtprel(2)
3931 tls_as_opt="-a64 --fatal-warnings"
3935 .section ".tdata","awT",@progbits
3943 addi 3,31,ld0@got@tlsgd
3945 addi 3,31,x1@got@tlsld
3948 addis 9,3,x2@dtprel@ha
3949 addi 9,9,x2@dtprel@l
3950 lwz 9,x3@got@tprel(31)
3953 addis 9,2,x2@tprel@ha
3954 addi 9,9,x2@tprel@l'
3957 tls_as_opt="-a32 --fatal-warnings"
3961 .section .tdata,"awT",@progbits
3965 call __tls_get_addr'
3968 tls_as_opt='--fatal-warnings'
3972 .section ".tdata","awT",@progbits
3981 l %r1,foo@GOTNTPOFF(%r12)
3982 l %r1,0(%r1):tls_load:foo
3983 bas %r14,0(%r1,%r13):tls_gdcall:foo
3984 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3987 tls_as_opt="-m31 --fatal-warnings"
3991 .section ".tdata","awT",@progbits
3999 lg %r1,foo@GOTNTPOFF(%r12)
4000 larl %r1,foo@INDNTPOFF
4001 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
4002 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
4005 tls_as_opt="-m64 -Aesame --fatal-warnings"
4007 sh-*-* | sh[123456789lbe]*-*-*)
4009 .section ".tdata","awT",@progbits
4019 tls_as_opt=--fatal-warnings
4023 sparc*-sun-solaris2.*)
4030 if test x$on_solaris = xyes && test x$gas_flag = xno; then
4032 .section ".tdata",#alloc,#write,#tls'
4037 .section ".tdata","awT",@progbits'
4040 tls_as_opt="-32 --fatal-warnings"
4042 conftest_s="$conftest_s
4045 sethi %tgd_hi22(foo), %o0
4046 add %o0, %tgd_lo10(foo), %o1
4047 add %l7, %o1, %o0, %tgd_add(foo)
4048 call __tls_get_addr, %tgd_call(foo)
4049 sethi %tldm_hi22(foo), %l1
4050 add %l1, %tldm_lo10(foo), %l2
4051 add %l7, %l2, %o0, %tldm_add(foo)
4052 call __tls_get_addr, %tldm_call(foo)
4053 sethi %tldo_hix22(foo), %l3
4054 xor %l3, %tldo_lox10(foo), %l4
4055 add %o0, %l4, %l5, %tldo_add(foo)
4056 sethi %tie_hi22(foo), %o3
4057 add %o3, %tie_lo10(foo), %o3
4058 ld [%l7 + %o3], %o2, %tie_ld(foo)
4059 add %g7, %o2, %o4, %tie_add(foo)
4060 sethi %tle_hix22(foo), %l1
4061 xor %l1, %tle_lox10(foo), %o5
4062 ld [%g7 + %o5], %o1"
4066 .section ".tdata","awT",@progbits
4069 addli r0, zero, tls_gd(foo)
4070 auli r0, zero, tls_gd_ha16(foo)
4071 addli r0, r0, tls_gd_lo16(foo)
4073 addli r0, zero, tls_ie(foo)
4074 auli r0, r0, tls_ie_ha16(foo)
4075 addli r0, r0, tls_ie_lo16(foo)'
4078 tls_as_opt="--fatal-warnings"
4082 .section ".tdata","awT",@progbits
4085 shl16insli r0, zero, hw0_last_tls_gd(foo)
4086 shl16insli r0, zero, hw1_last_tls_gd(foo)
4087 shl16insli r0, r0, hw0_tls_gd(foo)
4089 shl16insli r0, zero, hw1_last_tls_ie(foo)
4090 shl16insli r0, r0, hw0_tls_ie(foo)'
4093 tls_as_opt="--fatal-warnings"
4097 .section ".tdata","awT",@progbits
4100 movi a8, foo@TLSFUNC
4101 movi a10, foo@TLSARG
4102 callx8.tls a8, foo@TLSCALL'
4109 if test "x$enable_tls" = xno ; then
4110 : # TLS explicitly disabled.
4111 elif test "x$enable_tls" = xyes ; then
4112 set_have_as_tls=yes # TLS explicitly enabled.
4113 elif test -z "$tls_first_major"; then
4114 : # If we don't have a check, assume no support.
4116 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
4117 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
4118 [set_have_as_tls=yes])
4120 if test $set_have_as_tls = yes ; then
4121 AC_DEFINE(HAVE_AS_TLS, 1,
4122 [Define if your assembler and linker support thread-local storage.])
4125 # Target-specific assembler checks.
4127 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
4128 gcc_cv_ld_static_dynamic=no
4129 gcc_cv_ld_static_option='-Bstatic'
4130 gcc_cv_ld_dynamic_option='-Bdynamic'
4131 if test $in_tree_ld = yes ; then
4132 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
4133 gcc_cv_ld_static_dynamic=yes
4135 elif test x$gcc_cv_ld != x; then
4136 # Check if linker supports -Bstatic/-Bdynamic option
4137 if $gcc_cv_ld --help 2>&1 | grep -- -Bstatic > /dev/null \
4138 && $gcc_cv_ld --help 2>&1 | grep -- -Bdynamic > /dev/null; then
4139 gcc_cv_ld_static_dynamic=yes
4142 # AIX ld uses -b flags
4143 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
4144 gcc_cv_ld_static_dynamic=yes
4145 gcc_cv_ld_static_option="-bstatic"
4146 gcc_cv_ld_dynamic_option="-bdynamic"
4148 # HP-UX ld uses -a flags to select between shared and archive.
4150 if test x"$gnu_ld" = xno; then
4151 gcc_cv_ld_static_dynamic=yes
4152 gcc_cv_ld_static_option="-aarchive_shared"
4153 gcc_cv_ld_dynamic_option="-adefault"
4156 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
4158 gcc_cv_ld_static_dynamic=yes
4163 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
4164 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
4165 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
4166 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
4167 [Define to the linker option to disable use of shared objects.])
4168 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
4169 [Define to the linker option to enable use of shared objects.])
4171 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
4173 AC_MSG_CHECKING(linker --version-script option)
4174 gcc_cv_ld_version_script=no
4175 ld_version_script_option=''
4176 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
4177 gcc_cv_ld_version_script=yes
4178 ld_version_script_option='--version-script'
4179 elif test x$gcc_cv_ld != x; then
4181 # Solaris 2 ld always supports -M. It also supports a subset of
4182 # --version-script since Solaris 11.4, but requires
4183 # -z gnu-version-script-compat to activate.
4185 gcc_cv_ld_version_script=yes
4186 ld_version_script_option='-M'
4190 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
4191 AC_MSG_RESULT($gcc_cv_ld_version_script)
4192 AC_SUBST(ld_version_script_option)
4194 AC_MSG_CHECKING(linker soname option)
4196 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
4197 gcc_cv_ld_soname=yes
4198 ld_soname_option='-soname'
4199 elif test x$gcc_cv_ld != x; then
4202 gcc_cv_ld_soname=yes
4203 ld_soname_option='-install_name'
4205 # Solaris 2 ld always supports -h. It also supports --soname for GNU
4206 # ld compatiblity since some Solaris 10 update.
4208 gcc_cv_ld_soname=yes
4209 ld_soname_option='-h'
4213 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
4214 AC_MSG_RESULT($gcc_cv_ld_soname)
4215 AC_SUBST(ld_soname_option)
4217 if test x"$demangler_in_ld" = xyes; then
4218 AC_MSG_CHECKING(linker --demangle support)
4219 gcc_cv_ld_demangle=no
4220 if test $in_tree_ld = yes; then
4221 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
4222 gcc_cv_ld_demangle=yes
4224 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
4225 # Check if the GNU linker supports --demangle option
4226 if $gcc_cv_ld --help 2>&1 | grep no-demangle > /dev/null; then
4227 gcc_cv_ld_demangle=yes
4230 if test x"$gcc_cv_ld_demangle" = xyes; then
4231 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
4232 [Define if your linker supports --demangle option.])
4234 AC_MSG_RESULT($gcc_cv_ld_demangle)
4237 AC_MSG_CHECKING(linker plugin support)
4239 if test -f liblto_plugin.la; then
4240 save_ld_ver="$ld_ver"
4241 save_ld_vers_major="$ld_vers_major"
4242 save_ld_vers_minor="$ld_vers_minor"
4243 save_ld_is_gold="$ld_is_gold"
4247 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
4249 # FIXME: ld_is_gold?
4250 ld_vers_major="$gcc_cv_gld_major_version"
4251 ld_vers_minor="$gcc_cv_gld_minor_version"
4253 # Determine plugin linker version.
4254 # FIXME: Partial duplicate from above, generalize.
4256 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
4257 if echo "$ld_ver" | grep GNU > /dev/null; then
4258 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
4260 ld_vers=`echo $ld_ver | sed -n \
4261 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
4263 ld_vers=`echo $ld_ver | sed -n \
4264 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
4266 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
4267 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
4272 # Determine plugin support.
4273 if echo "$ld_ver" | grep GNU > /dev/null; then
4274 # Require GNU ld or gold 2.21+ for plugin support by default.
4275 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
4277 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
4278 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
4283 ld_ver="$save_ld_ver"
4284 ld_vers_major="$save_ld_vers_major"
4285 ld_vers_minor="$save_ld_vers_minor"
4286 ld_is_gold="$save_ld_is_gold"
4288 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
4289 [Define to the level of your linker's plugin support.])
4290 AC_MSG_RESULT($gcc_cv_lto_plugin)
4292 # Target OS-specific assembler checks.
4294 case "$target_os" in
4296 gcc_GAS_CHECK_FEATURE([-mmacosx-version-min option],
4297 gcc_cv_as_mmacosx_version_min,,
4298 [-mmacosx-version-min=10.1], [.text],,
4299 [AC_DEFINE(HAVE_AS_MMACOSX_VERSION_MIN_OPTION, 1,
4300 [Define if your Mac OS X assembler supports the -mmacos-version-min option.])])
4304 # Target CPU-specific assembler checks.
4308 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,,
4309 [-mabi=lp64], [.text],,,)
4310 if test x$gcc_cv_as_aarch64_mabi = xyes; then
4311 AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
4312 [Define if your assembler supports the -mabi option.])
4314 if test x$with_abi = xilp32; then
4315 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
4316 Upgrade the Assembler.])
4318 if test x"$with_multilib_list" = xdefault; then
4319 TM_MULTILIB_CONFIG=lp64
4321 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
4322 for aarch64_multilib in ${aarch64_multilibs}; do
4323 case ${aarch64_multilib} in
4325 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
4326 Upgrade the Assembler.])
4334 # Check if we have binutils support for relocations types needed by -fpic
4335 gcc_GAS_CHECK_FEATURE([-fpic relocs], gcc_cv_as_aarch64_picreloc,,,
4338 ldr x0, [[x2, #:gotpage_lo15:globalsym]]
4339 ],,[AC_DEFINE(HAVE_AS_SMALL_PIC_RELOCS, 1,
4340 [Define if your assembler supports relocs needed by -fpic.])])
4341 # Enable Branch Target Identification Mechanism and Return Address
4342 # Signing by default.
4343 AC_ARG_ENABLE(standard-branch-protection,
4345 AS_HELP_STRING([--enable-standard-branch-protection],
4346 [enable Branch Target Identification Mechanism and Return Address Signing by default for AArch64])
4347 AS_HELP_STRING([--disable-standard-branch-protection],
4348 [disable Branch Target Identification Mechanism and Return Address Signing by default for AArch64])
4353 tm_defines="${tm_defines} TARGET_ENABLE_BTI=1 TARGET_ENABLE_PAC_RET=1"
4358 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-standard-branch-protection.\
4359 Valid choices are 'yes' and 'no'.])
4364 # Enable default workaround for AArch64 Cortex-A53 erratum 835769.
4365 AC_ARG_ENABLE(fix-cortex-a53-835769,
4367 AS_HELP_STRING([--enable-fix-cortex-a53-835769],
4368 [enable workaround for AArch64 Cortex-A53 erratum 835769 by default])
4369 AS_HELP_STRING([--disable-fix-cortex-a53-835769],
4370 [disable workaround for AArch64 Cortex-A53 erratum 835769 by default])
4375 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1"
4380 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\
4381 Valid choices are 'yes' and 'no'.])
4387 # Enable default workaround for AArch64 Cortex-A53 erratum 843419.
4388 AC_ARG_ENABLE(fix-cortex-a53-843419,
4390 AS_HELP_STRING([--enable-fix-cortex-a53-843419],
4391 [enable workaround for AArch64 Cortex-A53 erratum 843419 by default])
4392 AS_HELP_STRING([--disable-fix-cortex-a53-843419],
4393 [disable workaround for AArch64 Cortex-A53 erratum 843419 by default])
4398 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1"
4403 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\
4404 Valid choices are 'yes' and 'no'.])
4412 # All TARGET_ABI_OSF targets.
4413 alpha*-*-linux* | alpha*-*-*bsd*)
4414 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4415 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
4418 extbl $3, $2, $3 !lituse_bytoff!1
4419 ldq $2, a($29) !literal!1
4420 ldq $4, b($29) !literal!2
4421 ldq_u $3, 0($2) !lituse_base!1
4422 ldq $27, f($29) !literal!5
4423 jsr $26, ($27), f !lituse_jsr!5
4424 ldah $29, 0($26) !gpdisp!3
4425 lda $0, c($29) !gprel
4426 ldah $1, d($29) !gprelhigh
4427 lda $1, d($1) !gprellow
4428 lda $29, 0($29) !gpdisp!3],,
4429 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
4430 [Define if your assembler supports explicit relocations.])])
4431 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
4432 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
4435 ldq $27, a($29) !literal!1
4436 jsr $26, ($27), a !lituse_jsrdirect!1],,
4437 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
4438 [Define if your assembler supports the lituse_jsrdirect relocation.])])
4442 gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax,,
4443 [--mlink-relax], [.text],,
4444 [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1,
4445 [Define if your avr assembler supports --mlink-relax option.])])
4447 gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,,
4449 [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1,
4450 [Define if your avr assembler supports -mrmw option.])])
4452 gcc_GAS_CHECK_FEATURE([__gcc_isr pseudo instruction],
4453 gcc_cv_as_avr_mgccisr,,
4459 [AC_DEFINE(HAVE_AS_AVR_MGCCISR_OPTION, 1,
4460 [Define if your avr assembler supports -mgcc-isr option.])])
4462 # Check how default linker description file implements .rodata for
4463 # avrxmega3 (PR21472). avr-gcc assumes .rodata is *not* loaded to
4464 # RAM so avr-gcc skips __do_copy_data for .rodata objects.
4465 AC_MSG_CHECKING(binutils for avrxmega3 .rodata support)
4466 cat > conftest.s <<EOF
4467 .section .rodata,"a",@progbits
4469 ;; avr-nm should print "... R xxvaryy", not "... D xxvaryy".
4474 AC_TRY_COMMAND([$gcc_cv_as -mmcu=avrxmega3 conftest.s -o conftest.o])
4475 AC_TRY_COMMAND([$gcc_cv_ld -mavrxmega3 conftest.o -o conftest.elf])
4476 AC_TRY_COMMAND([$gcc_cv_nm conftest.elf > conftest.nm])
4477 if test -s conftest.nm
4479 if grep ' R xxvaryy' conftest.nm > /dev/null; then
4481 AC_DEFINE(HAVE_LD_AVR_AVRXMEGA3_RODATA_IN_FLASH, 1,
4482 [Define if your default avr linker script for avrxmega3 leaves .rodata in flash.])
4484 AC_MSG_RESULT(no: avrxmega3 .rodata located in RAM)
4485 echo "$as_me: nm output was" >&AS_MESSAGE_LOG_FD
4486 cat conftest.nm >&AS_MESSAGE_LOG_FD
4487 avr_ld_ver="`$gcc_cv_ld -v | sed -e 's:^.* ::'`"
4488 AC_MSG_WARN([[support for avrxmega3 .rodata in flash needs Binutils 2.29 or higher (have $avr_ld_ver)]])
4491 AC_MSG_RESULT(test failed)
4492 echo "$as_me: failed program was" >&AS_MESSAGE_LOG_FD
4493 cat conftest.s >&AS_MESSAGE_LOG_FD
4494 AC_MSG_WARN([[see `config.log' for details]])
4496 rm -f conftest.s conftest.o conftest.elf conftest.nm
4500 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
4501 gcc_cv_as_cris_no_mul_bug,[2,15,91],
4502 [-no-mul-bug-abort], [.text],,
4503 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
4504 [Define if your assembler supports the -no-mul-bug-abort option.])])
4508 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
4510 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
4511 [Define if your assembler supports -relax option.])])
4513 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
4514 gcc_cv_as_sparc_gotdata_op,,
4521 sethi %gdop_hix22(foo), %g1
4522 xor %g1, %gdop_lox10(foo), %g1
4523 ld [[%l7 + %g1]], %g2, %gdop(foo)],
4524 [if test x$gcc_cv_ld != x \
4525 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4526 if test x$gcc_cv_objdump != x; then
4527 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
4528 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
4529 gcc_cv_as_sparc_gotdata_op=no
4531 gcc_cv_as_sparc_gotdata_op=yes
4536 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
4537 [Define if your assembler and linker support GOTDATA_OP relocs.])])
4539 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
4540 gcc_cv_as_sparc_ua_pcrel,,
4548 .uaword %r_disp32(foo)],
4549 [if test x$gcc_cv_ld != x \
4550 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4551 gcc_cv_as_sparc_ua_pcrel=yes
4554 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
4555 [Define if your assembler and linker support unaligned PC relative relocs.])
4557 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
4558 gcc_cv_as_sparc_ua_pcrel_hidden,,
4563 .uaword %r_disp32(foo)
4564 .byte 0x32, 0x33, 0x34
4569 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4570 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
4571 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
4572 | grep ' 31000000 07323334' > /dev/null 2>&1; then
4573 if $gcc_cv_objdump -R conftest 2> /dev/null \
4574 | grep 'DISP32' > /dev/null 2>&1; then
4577 gcc_cv_as_sparc_ua_pcrel_hidden=yes
4581 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
4582 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
4583 ]) # unaligned pcrel relocs
4585 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
4586 gcc_cv_as_sparc_offsetable_lo10,,
4589 or %g1, %lo(ab) + 12, %g1
4590 or %g1, %lo(ab + 12), %g1],
4591 [if test x$gcc_cv_objdump != x \
4592 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
4593 | grep ' 82106000 82106000' > /dev/null 2>&1; then
4594 gcc_cv_as_sparc_offsetable_lo10=yes
4596 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
4597 [Define if your assembler supports offsetable %lo().])])
4599 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
4600 gcc_cv_as_sparc_fmaf,,
4603 .register %g2, #scratch
4604 .register %g3, #scratch
4606 fmaddd %f0, %f2, %f4, %f6
4607 addxccc %g1, %g2, %g3
4608 fsrl32 %f2, %f4, %f8
4609 fnaddd %f10, %f12, %f14],,
4610 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
4611 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
4613 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
4614 gcc_cv_as_sparc_sparc4,,
4617 .register %g2, #scratch
4618 .register %g3, #scratch
4621 1: cwbneg %g2, %g3, 1f
4624 aes_kexpand0 %f4, %f6, %f8
4625 des_round %f38, %f40, %f42, %f44
4626 camellia_f %f54, %f56, %f58, %f60
4627 kasumi_fi_xor %f46, %f48, %f50, %f52],,
4628 [AC_DEFINE(HAVE_AS_SPARC4, 1,
4629 [Define if your assembler supports SPARC4 instructions.])])
4631 gcc_GAS_CHECK_FEATURE([SPARC5 and VIS 4.0 instructions],
4632 gcc_cv_as_sparc_sparc5,,
4635 .register %g2, #scratch
4636 .register %g3, #scratch
4639 fpadd8 %f0, %f2, %f4],,
4640 [AC_DEFINE(HAVE_AS_SPARC5_VIS4, 1,
4641 [Define if your assembler supports SPARC5 and VIS 4.0 instructions.])])
4643 gcc_GAS_CHECK_FEATURE([SPARC6 instructions],
4644 gcc_cv_as_sparc_sparc6,,
4647 .register %g2, #scratch
4648 .register %g3, #scratch
4651 fpsll64x %f0, %f2, %f4],,
4652 [AC_DEFINE(HAVE_AS_SPARC6, 1,
4653 [Define if your assembler supports SPARC6 instructions.])])
4655 gcc_GAS_CHECK_FEATURE([LEON instructions],
4656 gcc_cv_as_sparc_leon,,
4659 .register %g2, #scratch
4660 .register %g3, #scratch
4664 casa [[%g2]] 0xb, %g3, %g1],,
4665 [AC_DEFINE(HAVE_AS_LEON, 1,
4666 [Define if your assembler supports LEON instructions.])])
4670 i[34567]86-*-* | x86_64-*-*)
4674 # Full C++ conformance when using a shared libstdc++-v3 requires some
4675 # support from the Cygwin DLL, which in more recent versions exports
4676 # wrappers to aid in interposing and redirecting operators new, delete,
4677 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
4678 # are configuring for a version of Cygwin that exports the wrappers.
4679 if test x$host = x$target && test x$host_cpu = xi686; then
4680 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
4682 # Can't check presence of libc functions during cross-compile, so
4683 # we just have to assume we're building for an up-to-date target.
4684 gcc_ac_cygwin_dll_wrappers=yes
4686 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
4687 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
4688 [Define if you want to generate code by default that assumes that the
4689 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
4692 cygwin* | pe | mingw32*)
4693 # Recent binutils allows the three-operand form of ".comm" on PE. This
4694 # definition is used unconditionally to initialise the default state of
4695 # the target option variable that governs usage of the feature.
4696 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
4697 [2,19,52],,[.comm foo,1,32])
4698 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
4699 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
4700 [Define if your assembler supports specifying the alignment
4701 of objects allocated using the GAS .comm command.])
4702 # Used for DWARF 2 in PE
4703 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
4704 gcc_cv_as_ix86_pe_secrel32,
4710 [if test x$gcc_cv_ld != x \
4711 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
4712 gcc_cv_as_ix86_pe_secrel32=yes
4715 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
4716 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
4717 # Test if the assembler supports the extended form of the .section
4718 # directive that specifies section alignment. LTO support uses this,
4719 # but normally only after installation, so we warn but don't fail the
4720 # configure if LTO is enabled but the assembler does not support it.
4721 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
4722 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
4723 if test x$gcc_cv_as_section_has_align != xyes; then
4724 case ",$enable_languages," in
4726 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
4733 gcc_GAS_CHECK_FEATURE([-xbrace_comment], gcc_cv_as_ix86_xbrace_comment,,
4734 [-xbrace_comment=no], [.text],,
4735 [AC_DEFINE(HAVE_AS_XBRACE_COMMENT_OPTION, 1,
4736 [Define if your assembler supports -xbrace_comment option.])])
4738 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
4739 gcc_cv_as_ix86_filds,,,
4740 [filds (%ebp); fists (%ebp)],,
4741 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
4742 [Define if your assembler uses filds and fists mnemonics.])])
4744 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
4745 gcc_cv_as_ix86_fildq,,,
4746 [fildq (%ebp); fistpq (%ebp)],,
4747 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
4748 [Define if your assembler uses fildq and fistq mnemonics.])])
4750 gcc_GAS_CHECK_FEATURE([cmov syntax],
4751 gcc_cv_as_ix86_cmov_sun_syntax,,,
4752 [cmovl.l %edx, %eax],,
4753 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
4754 [Define if your assembler supports the Sun syntax for cmov.])])
4756 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
4757 gcc_cv_as_ix86_ffreep,,,
4759 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
4760 [Define if your assembler supports the ffreep mnemonic.])])
4762 gcc_GAS_CHECK_FEATURE([.quad directive],
4763 gcc_cv_as_ix86_quad,,,
4765 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
4766 [Define if your assembler supports the .quad directive.])])
4768 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
4769 gcc_cv_as_ix86_sahf,,,
4772 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
4773 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
4775 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
4776 gcc_cv_as_ix86_interunit_movq,,,
4780 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
4781 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
4782 [Define if your assembler supports interunit movq mnemonic.])
4784 gcc_GAS_CHECK_FEATURE([hle prefixes],
4785 gcc_cv_as_ix86_hle,,,
4786 [lock xacquire cmpxchg %esi, (%ecx)],,
4787 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
4788 [Define if your assembler supports HLE prefixes.])])
4790 gcc_GAS_CHECK_FEATURE([swap suffix],
4791 gcc_cv_as_ix86_swap,,,
4792 [movl.s %esp, %ebp],,
4793 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
4794 [Define if your assembler supports the swap suffix.])])
4796 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
4797 gcc_cv_as_ix86_diff_sect_delta,,,
4805 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
4806 [Define if your assembler supports the subtraction of symbols in different sections.])])
4808 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
4809 gcc_cv_as_ix86_rep_lock_prefix,,,
4815 lock addl %edi, (%eax,%esi)
4816 lock orl $0, (%esp)],,
4817 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
4818 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
4820 gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
4821 gcc_cv_as_ix86_ud2,,,
4823 [AC_DEFINE(HAVE_AS_IX86_UD2, 1,
4824 [Define if your assembler supports the 'ud2' mnemonic.])])
4826 # Enforce 32-bit output with gas and gld.
4827 if test x$gas = xyes; then
4828 as_ix86_gas_32_opt="--32"
4830 if echo "$ld_ver" | grep GNU > /dev/null; then
4831 if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then
4832 ld_ix86_gld_32_opt="-melf_i386_sol2"
4834 ld_ix86_gld_32_opt="-melf_i386"
4838 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
4839 gcc_cv_as_ix86_tlsgdplt,,
4840 [$as_ix86_gas_32_opt],
4841 [call tls_gd@tlsgdplt],
4842 [if test x$gcc_cv_ld != x \
4843 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4844 gcc_cv_as_ix86_tlsgdplt=yes
4847 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
4848 [Define if your assembler and linker support @tlsgdplt.])])
4851 .section .tdata,"aw'$tls_section_flag'",@progbits
4853 .section .text,"ax",@progbits
4854 call tls_ld@tlsldmplt'
4856 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
4857 gcc_cv_as_ix86_tlsldmplt,,
4858 [$as_ix86_gas_32_opt],
4860 [if test x$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_tlsldmplt=yes
4865 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT,
4866 [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`],
4867 [Define to 1 if your assembler and linker support @tlsldmplt.])
4870 .section .text,"ax",@progbits
4872 .type _start, @function
4874 leal value@tlsldm(%ebx), %eax
4875 call ___tls_get_addr@plt
4877 .section .tdata,"aw'$tls_section_flag'",@progbits
4878 .type value, @object
4880 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc],
4881 gcc_cv_as_ix86_tlsldm,,
4882 [$as_ix86_gas_32_opt],
4884 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4885 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then
4886 if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \
4887 || dis conftest 2>/dev/null | grep nop > /dev/null; then
4888 gcc_cv_as_ix86_tlsldm=yes
4892 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM,
4893 [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`],
4894 [Define to 1 if your assembler and linker support @tlsldm.])
4905 gcc_GAS_CHECK_FEATURE([R_386_GOT32X reloc],
4906 gcc_cv_as_ix86_got32x,,
4907 [$as_ix86_gas_32_opt],
4909 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4910 && test x$gcc_cv_readelf != x \
4911 && $gcc_cv_readelf --relocs --wide conftest.o 2>&1 \
4912 | grep R_386_GOT32X > /dev/null 2>&1 \
4913 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4914 if $gcc_cv_objdump -dw conftest 2>&1 \
4915 | grep 0xffffff > /dev/null 2>&1; then
4916 gcc_cv_as_ix86_got32x=no
4918 gcc_cv_as_ix86_got32x=yes
4922 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_GOT32X,
4923 [`if test x"$gcc_cv_as_ix86_got32x" = xyes; then echo 1; else echo 0; fi`],
4924 [Define 0/1 if your assembler and linker support @GOT.])
4926 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
4927 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],
4928 [$as_ix86_gas_32_opt],
4934 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
4935 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
4936 [Define true if the assembler supports '.long foo@GOTOFF'.])
4939 .section .text,"ax",@progbits
4941 .type _start, @function
4943 leal ld@tlsldm(%ecx), %eax
4944 call *___tls_get_addr@GOT(%ecx)
4945 leal gd@tlsgd(%ecx), %eax
4946 call *___tls_get_addr@GOT(%ecx)
4948 .section .tdata,"aw'$tls_section_flag'",@progbits
4956 gcc_GAS_CHECK_FEATURE([calling ___tls_get_addr via GOT],
4957 gcc_cv_as_ix86_tls_get_addr_via_got,,
4958 [$as_ix86_gas_32_opt],
4960 [if test x$gcc_cv_ld != x \
4961 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4962 gcc_cv_as_ix86_tls_get_addr_via_got=yes
4965 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLS_GET_ADDR_GOT,
4966 [`if test x"$gcc_cv_as_ix86_tls_get_addr_via_got" = xyes; then echo 1; else echo 0; fi`],
4967 [Define 0/1 if your assembler and linker support calling ___tls_get_addr via GOT.])
4971 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
4972 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
4974 addl r15 = @ltoffx(x#), gp
4976 ld8.mov r16 = [[r15]], x#
4978 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
4979 [Define if your assembler supports ltoffx and ldxmov relocations.])])
4987 gcc_GAS_CHECK_FEATURE([.machine directive support],
4988 gcc_cv_as_machine_directive,,,
4989 [ .machine ppc7400])
4990 if test x$gcc_cv_as_machine_directive != xyes; then
4991 echo "*** This target requires an assembler supporting \".machine\"" >&2
4992 echo you can get it from: https://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
4993 test x$build = x$target && exit 1
4999 *-*-aix*) conftest_s=' .machine "pwr5"
5002 *-*-darwin*) conftest_s=' .text
5004 *) conftest_s=' .machine power4
5009 gcc_GAS_CHECK_FEATURE([mfcr field support],
5010 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
5012 [AC_DEFINE(HAVE_AS_MFCRF, 1,
5013 [Define if your assembler supports mfcr field.])])
5016 *-*-aix*) conftest_s=' .csect .text[[PR]]
5018 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
5022 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
5023 *) conftest_s=' .text
5025 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
5028 gcc_GAS_CHECK_FEATURE([rel16 relocs],
5029 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
5031 [AC_DEFINE(HAVE_AS_REL16, 1,
5032 [Define if your assembler supports R_PPC_REL16 relocs.])])
5035 *-*-aix*) conftest_s=' .machine "pwr7"
5038 *) conftest_s=' .machine power7
5043 gcc_GAS_CHECK_FEATURE([vector-scalar support],
5044 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
5046 [AC_DEFINE(HAVE_AS_VSX, 1,
5047 [Define if your assembler supports VSX instructions.])])
5049 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5050 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
5051 [.gnu_attribute 4,1],,
5052 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5053 [Define if your assembler supports .gnu_attribute.])])
5055 gcc_GAS_CHECK_FEATURE([prologue entry point marker support],
5056 gcc_cv_as_powerpc_entry_markers, [2,26,0],-a64 --fatal-warnings,
5057 [ .reloc .,R_PPC64_ENTRY; nop],,
5058 [AC_DEFINE(HAVE_AS_ENTRY_MARKERS, 1,
5059 [Define if your assembler supports the R_PPC64_ENTRY relocation.])])
5061 gcc_GAS_CHECK_FEATURE([plt sequence marker support],
5062 gcc_cv_as_powerpc_pltseq_markers, [2,31,0],-a32 --fatal-warnings,
5063 [ .reloc .,R_PPC_PLTSEQ; nop],,
5064 [AC_DEFINE(HAVE_AS_PLTSEQ, 1,
5065 [Define if your assembler supports R_PPC*_PLTSEQ relocations.])])
5069 gcc_GAS_CHECK_FEATURE([AIX .ref support],
5070 gcc_cv_as_aix_ref, [2,21,0],,
5071 [ .csect stuff[[rw]]
5077 [AC_DEFINE(HAVE_AS_REF, 1,
5078 [Define if your assembler supports .ref])])
5080 gcc_GAS_CHECK_FEATURE([AIX DWARF location lists section support],
5081 gcc_cv_as_aix_dwloc, [2,21,0],,
5086 [AC_DEFINE(HAVE_XCOFF_DWARF_EXTRAS, 1,
5087 [Define if your assembler supports AIX debug frame section label reference.])])
5093 gcc_GAS_CHECK_FEATURE([explicit relocation support],
5094 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
5095 [ lw $4,%gp_rel(foo)($4)],,
5096 [if test x$target_cpu_default = x
5097 then target_cpu_default=MASK_EXPLICIT_RELOCS
5098 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
5101 gcc_GAS_CHECK_FEATURE([-mno-shared support],
5102 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
5103 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
5104 [Define if the assembler understands -mno-shared.])])
5106 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5107 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
5108 [.gnu_attribute 4,1],,
5109 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5110 [Define if your assembler supports .gnu_attribute.])])
5112 gcc_GAS_CHECK_FEATURE([.module support],
5113 gcc_cv_as_mips_dot_module,,[-32],
5116 [AC_DEFINE(HAVE_AS_DOT_MODULE, 1,
5117 [Define if your assembler supports .module.])])
5118 if test x$gcc_cv_as_mips_dot_module = xno \
5119 && test x$with_fp_32 != x; then
5121 [Requesting --with-fp-32= requires assembler support for .module.])
5124 gcc_GAS_CHECK_FEATURE([.micromips support],
5125 gcc_cv_as_micromips_support,,[--fatal-warnings],
5127 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
5128 [Define if your assembler supports the .set micromips directive])])
5130 gcc_GAS_CHECK_FEATURE([.dtprelword support],
5131 gcc_cv_as_mips_dtprelword, [2,18,0],,
5132 [.section .tdata,"awT",@progbits
5136 .dtprelword x+0x8000],,
5137 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
5138 [Define if your assembler supports .dtprelword.])])
5140 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
5141 gcc_cv_as_mips_dspr1_mult,,,
5151 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
5152 [Define if your assembler supports DSPR1 mult.])])
5154 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
5155 gcc_cv_as_ld_jalr_reloc=no
5156 if test $gcc_cv_as_mips_explicit_relocs = yes; then
5157 if test $in_tree_ld = yes ; then
5158 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
5159 && test $in_tree_ld_is_elf = yes; then
5160 gcc_cv_as_ld_jalr_reloc=yes
5162 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
5163 echo ' .ent x' > conftest.s
5164 echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s
5165 echo ' lw $25,%call16(y)($28)' >> conftest.s
5166 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
5167 echo '1: jalr $25' >> conftest.s
5168 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
5169 echo '1: jalr $25' >> conftest.s
5170 echo ' .end x' >> conftest.s
5171 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
5172 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
5173 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
5174 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
5175 gcc_cv_as_ld_jalr_reloc=yes
5181 if test $gcc_cv_as_ld_jalr_reloc = yes; then
5182 if test x$target_cpu_default = x; then
5183 target_cpu_default=MASK_RELAX_PIC_CALLS
5185 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
5188 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
5190 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
5191 [gcc_cv_ld_mips_personality_relaxation],
5192 [gcc_cv_ld_mips_personality_relaxation=no
5193 if test $in_tree_ld = yes ; then
5194 if test "$gcc_cv_gld_major_version" -eq 2 \
5195 -a "$gcc_cv_gld_minor_version" -ge 21 \
5196 -o "$gcc_cv_gld_major_version" -gt 2; then
5197 gcc_cv_ld_mips_personality_relaxation=yes
5199 elif test x$gcc_cv_as != x \
5200 -a x$gcc_cv_ld != x \
5201 -a x$gcc_cv_readelf != x ; then
5202 cat > conftest.s <<EOF
5204 .cfi_personality 0x80,indirect_ptr
5211 .section .data,"aw",@progbits
5215 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
5216 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
5217 if $gcc_cv_readelf -d conftest 2>&1 \
5218 | grep TEXTREL > /dev/null 2>&1; then
5220 elif $gcc_cv_readelf --relocs conftest 2>&1 \
5221 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
5224 gcc_cv_ld_mips_personality_relaxation=yes
5228 rm -f conftest.s conftest.o conftest])
5229 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
5230 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
5231 [Define if your linker can relax absolute .eh_frame personality
5232 pointers into PC-relative form.])
5235 gcc_GAS_CHECK_FEATURE([-mnan= support],
5236 gcc_cv_as_mips_nan,,
5238 [AC_DEFINE(HAVE_AS_NAN, 1,
5239 [Define if the assembler understands -mnan=.])])
5240 if test x$gcc_cv_as_mips_nan = xno \
5241 && test x$with_nan != x; then
5243 [Requesting --with-nan= requires assembler support for -mnan=])
5247 # Earlier GAS versions generically support .gnu_attribute, but the
5248 # msp430 assembler will not do anything with it.
5249 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5250 gcc_cv_as_msp430_gnu_attribute, [2,33,50],,
5251 [.gnu_attribute 4,1],,
5252 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5253 [Define if your assembler supports .gnu_attribute.])])
5254 gcc_GAS_CHECK_FEATURE([.mspabi_attribute support],
5255 gcc_cv_as_msp430_mspabi_attribute, [2,33,50],,
5256 [.mspabi_attribute 4,2],,
5257 [AC_DEFINE(HAVE_AS_MSPABI_ATTRIBUTE, 1,
5258 [Define if your assembler supports .mspabi_attribute.])])
5259 if test x$enable_newlib_nano_formatted_io = xyes; then
5260 AC_DEFINE(HAVE_NEWLIB_NANO_FORMATTED_IO, 1, [Define if GCC has been
5261 configured with --enable-newlib-nano-formatted-io.])
5265 # Versions 2.33 and earlier lacked support for the %gotoff relocation
5266 # syntax that is documented in the ABI specification.
5267 gcc_GAS_CHECK_FEATURE([support for %gotoff relocations in constant data],
5268 gcc_cv_as_nios2_gotoff_relocation,,,
5271 .long %gotoff(foo)],,
5272 [AC_DEFINE(HAVE_AS_NIOS2_GOTOFF_RELOCATION, 1,
5273 [Define if your assembler supports %gotoff relocation syntax.])])
5276 gcc_GAS_CHECK_FEATURE([.attribute support],
5277 gcc_cv_as_riscv_attribute, [2,32,0],,
5278 [.attribute stack_align,4],,
5279 [AC_DEFINE(HAVE_AS_RISCV_ATTRIBUTE, 1,
5280 [Define if your assembler supports .attribute.])])
5281 gcc_GAS_CHECK_FEATURE([-misa-spec= support],
5282 gcc_cv_as_riscv_isa_spec,,
5284 [AC_DEFINE(HAVE_AS_MISA_SPEC, 1,
5285 [Define if the assembler understands -misa-spec=.])])
5286 gcc_GAS_CHECK_FEATURE([-march=rv32i_zifencei support],
5287 gcc_cv_as_riscv_march_zifencei,,
5288 [-march=rv32i_zifencei],,,
5289 [AC_DEFINE(HAVE_AS_MARCH_ZIFENCEI, 1,
5290 [Define if the assembler understands -march=rv*_zifencei.])])
5293 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5294 gcc_cv_as_s390_gnu_attribute, [2,18,0],,
5295 [.gnu_attribute 8,1],,
5296 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5297 [Define if your assembler supports .gnu_attribute.])])
5298 gcc_GAS_CHECK_FEATURE([.machine and .machinemode support],
5299 gcc_cv_as_s390_machine_machinemode, [2,24,0],,
5304 [AC_DEFINE(HAVE_AS_MACHINE_MACHINEMODE, 1,
5305 [Define if your assembler supports .machine and .machinemode.])])
5306 gcc_GAS_CHECK_FEATURE([architecture modifiers support],
5307 gcc_cv_as_s390_architecture_modifiers, [2,26,0],,
5308 [ .machine z13+vx ],,
5309 [AC_DEFINE(HAVE_AS_ARCHITECTURE_MODIFIERS, 1,
5310 [Define if your assembler supports architecture modifiers.])])
5311 gcc_GAS_CHECK_FEATURE([vector load/store alignment hints],
5312 gcc_cv_as_s390_vector_loadstore_alignment_hints, [2,31,0],,
5313 [ vl %v24,0(%r15),3 ],,
5314 [AC_DEFINE(HAVE_AS_VECTOR_LOADSTORE_ALIGNMENT_HINTS, 1,
5315 [Define if your assembler supports vl/vst/vlm/vstm with an optional alignment hint argument.])])
5316 gcc_GAS_CHECK_FEATURE([vector load/store alignment hints on z13],
5317 gcc_cv_as_s390_vector_loadstore_alignment_hints_on_z13,, [-mzarch -march=z13],
5318 [ vl %v24,0(%r15),3 ],,
5319 [AC_DEFINE(HAVE_AS_VECTOR_LOADSTORE_ALIGNMENT_HINTS_ON_Z13, 1,
5320 [Define if your assembler supports vl/vst/vlm/vstm with an optional alignment hint argument on z13.])])
5325 # Mips and HP-UX need the GNU assembler.
5326 # Linux on IA64 might be able to use the Intel assembler.
5329 mips*-*-* | *-*-hpux* )
5330 if test x$gas_flag = xyes \
5331 || test x"$host" != x"$build" \
5332 || test ! -x "$gcc_cv_as" \
5333 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
5336 echo "*** This configuration requires the GNU assembler" >&2
5342 # ??? Not all targets support dwarf2 debug_line, even within a version
5343 # of gas. Moreover, we need to emit a valid instruction to trigger any
5344 # info to the output file. So, as supported targets are added to gas 2.11,
5345 # add some instruction here to (also) show we expect this might work.
5346 # ??? Once 2.11 is released, probably need to add first known working
5347 # version to the per-target configury.
5349 aarch64 | alpha | arc | arm | avr | bfin | cris | csky | i386 | m32c | m68k \
5350 | microblaze | mips | nds32 | nios2 | pa | riscv | rs6000 | score | sparc \
5351 | tilegx | tilepro | visium | xstormy16 | xtensa)
5361 if test x"$insn" != x; then
5363 .file 1 \"conftest.s\"
5366 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
5367 gcc_cv_as_dwarf2_debug_line,
5368 [elf,2,11,0],, [$conftest_s],
5369 [if test x$gcc_cv_objdump != x \
5370 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
5371 | grep debug_line > /dev/null 2>&1; then
5372 gcc_cv_as_dwarf2_debug_line=yes
5373 elif test x$gcc_cv_otool != x \
5374 && $gcc_cv_otool -l conftest.o 2> /dev/null \
5375 | grep debug_line > /dev/null 2>&1; then
5376 gcc_cv_as_dwarf2_debug_line=yes
5379 # The .debug_line file table must be in the exact order that
5380 # we specified the files, since these indices are also used
5381 # by DW_AT_decl_file. Approximate this test by testing if
5382 # the assembler bitches if the same index is assigned twice.
5383 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
5384 gcc_cv_as_dwarf2_file_buggy,,,
5388 if test $gcc_cv_as_dwarf2_debug_line = yes \
5389 && test $gcc_cv_as_dwarf2_file_buggy = no; then
5390 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
5391 [Define if your assembler supports dwarf2 .file/.loc directives,
5392 and preserves file table indices exactly as given.])
5394 if test $gcc_cv_as_leb128 = yes; then
5396 .file 1 \"conftest.s\"
5397 .loc 1 3 0 view .LVU1
5403 gcc_GAS_CHECK_FEATURE([dwarf2 debug_view support],
5404 gcc_cv_as_dwarf2_debug_view,
5405 [elf,2,27,0],,[$conftest_s],,
5406 [AC_DEFINE(HAVE_AS_DWARF2_DEBUG_VIEW, 1,
5407 [Define if your assembler supports views in dwarf2 .loc directives.])])
5411 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
5412 gcc_cv_as_gdwarf2_flag,
5413 [elf,2,11,0], [--gdwarf2], [$insn],,
5414 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
5415 [Define if your assembler supports the --gdwarf2 option.])])
5417 gcc_GAS_CHECK_FEATURE([--gdwarf-5 option],
5418 gcc_cv_as_gdwarf_5_flag,
5419 [elf,2,36,0], [--gdwarf-5], [$insn],,
5420 [AC_DEFINE(HAVE_AS_GDWARF_5_DEBUG_FLAG, 1,
5421 [Define if your assembler supports the --gdwarf-5 option.])])
5423 dwarf4_debug_info_size=0x46
5424 dwarf4_high_pc_form=7
5425 dwarf4_debug_aranges_size=0x2c
5427 for dwarf4_addr_size in 8 4; do
5434 .type foo, %function
5443 .section .debug_info,\"\",%progbits
5445 .4byte $dwarf4_debug_info_size
5447 .4byte .Ldebug_abbrev0
5448 .byte 0x$dwarf4_addr_size
5450 .ascii \"GNU C17\\0\"
5454 .${dwarf4_addr_size}byte .Ltext0
5455 .${dwarf4_addr_size}byte .Letext0-.Ltext0
5456 .4byte .Ldebug_line0
5462 .${dwarf4_addr_size}byte .LFB0
5463 .${dwarf4_addr_size}byte .LFE0-.LFB0
5467 .section .debug_abbrev,\"\",%progbits
5483 .byte 0x$dwarf4_high_pc_form
5504 .byte 0x$dwarf4_high_pc_form
5510 .section .debug_aranges,\"\",%progbits
5511 .4byte $dwarf4_debug_aranges_size
5513 .4byte .Ldebug_info0
5518 .${dwarf4_addr_size}byte .Ltext0
5519 .${dwarf4_addr_size}byte .Letext0-.Ltext0
5520 .${dwarf4_addr_size}byte 0
5521 .${dwarf4_addr_size}byte 0
5522 .section .debug_line,\"\",%progbits
5524 .4byte .LELT0-.LSLT0
5527 .4byte .LELTP0-.LASLTP0
5555 .byte 0x$dwarf4_line_sz
5557 .${dwarf4_addr_size}byte .LM1
5562 .byte 0x$dwarf4_line_sz
5564 .${dwarf4_addr_size}byte .LM2
5569 .byte 0x$dwarf4_line_sz
5571 .${dwarf4_addr_size}byte .Letext0
5576 .section .debug_str,\"\",%progbits
5580 if test $dwarf4_addr_size = 4; then
5581 gcc_GAS_CHECK_FEATURE([assembly of compiler generated 32-bit .debug_line],
5582 gcc_cv_as_debug_line_32_flag,
5583 [elf,2,36,0], [], [$conftest_s],,
5584 [dwarf4_success=yes])
5586 gcc_GAS_CHECK_FEATURE([assembly of compiler generated 64-bit .debug_line],
5587 gcc_cv_as_debug_line_64_flag,
5588 [elf,2,36,0], [], [$conftest_s],,
5589 [dwarf4_success=yes])
5591 if test $dwarf4_success = yes; then
5593 gcc_GAS_CHECK_FEATURE([--gdwarf-4 not refusing compiler generated .debug_line],
5594 gcc_cv_as_dwarf_4_debug_line_flag,
5595 [elf,2,36,0], [--gdwarf-4], [$conftest_s],,
5596 [dwarf4_success=yes])
5599 dwarf4_debug_info_size=0x36
5600 dwarf4_high_pc_form=6
5601 dwarf4_debug_aranges_size=0x1c
5605 if test $dwarf4_success = yes; then
5623 gcc_GAS_CHECK_FEATURE([--gdwarf-4 with the APP marker],
5624 gcc_cv_as_dwarf_4_app_flag,,
5625 [--gdwarf-4], [$conftest_s],, [dwarf4_success=yes])
5628 if test $dwarf4_success = yes; then
5632 .type foo, %function
5638 gcc_GAS_CHECK_FEATURE([working --gdwarf-4/--gdwarf-5 for all sources],
5639 gcc_cv_as_working_gdwarf_n_flag,,
5643 if test x$gcc_cv_readelf != x \
5644 && $gcc_cv_readelf -w conftest.o 2>&1 \
5645 | grep conftest.s > /dev/null 2>&1; then
5646 gcc_cv_as_working_gdwarf_n_flag=no
5648 gcc_cv_as_working_gdwarf_n_flag=yes
5650 changequote([,])dnl])
5651 if test $gcc_cv_as_working_gdwarf_n_flag = yes; then
5652 AC_DEFINE(HAVE_AS_WORKING_DWARF_N_FLAG, 1,
5653 [Define if your assembler supports --gdwarf-4/--gdwarf-5 even with
5654 compiler generated .debug_line.])
5658 gcc_GAS_CHECK_FEATURE([--gstabs option],
5659 gcc_cv_as_gstabs_flag,
5660 [elf,2,11,0], [--gstabs], [$insn],,
5661 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
5662 [Define if your assembler supports the --gstabs option.])])
5664 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
5665 gcc_cv_as_debug_prefix_map_flag,
5666 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
5667 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
5668 [Define if your assembler supports the --debug-prefix-map option.])])
5671 gcc_GAS_CHECK_FEATURE([compressed debug sections],
5672 gcc_cv_as_compress_debug,,,,
5673 [# gas compiled without zlib cannot compress debug sections and warns
5674 # about it, but still exits successfully. So check for this, too.
5675 if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null
5677 gcc_cv_as_compress_debug=0
5678 # Since binutils 2.26, gas supports --compress-debug-sections=type,
5679 # defaulting to the ELF gABI format.
5680 elif $gcc_cv_as --compress-debug-sections=zlib-gnu -o conftest.o conftest.s > /dev/null 2>&1
5682 gcc_cv_as_compress_debug=2
5683 gcc_cv_as_compress_debug_option="--compress-debug-sections"
5684 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
5685 # Before binutils 2.26, gas only supported --compress-debug-options and
5686 # emitted the traditional GNU format.
5687 elif $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s > /dev/null 2>&1
5689 gcc_cv_as_compress_debug=1
5690 gcc_cv_as_compress_debug_option="--compress-debug-sections"
5691 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
5693 gcc_cv_as_compress_debug=0
5695 AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug,
5696 [Define to the level of your assembler's compressed debug section support.])
5697 AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option",
5698 [Define to the assembler option to enable compressed debug sections.])
5699 AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option",
5700 [Define to the assembler option to disable compressed debug sections.])
5702 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
5705 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
5706 [Define if your assembler supports .lcomm with an alignment field.])])
5708 if test x$with_sysroot = x && test x$host = x$target \
5709 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
5710 && test "$prefix" != "NONE"; then
5711 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
5712 [Define to PREFIX/include if cpp should also search that directory.])
5715 # Determine the version of glibc, if any, used on the target.
5716 AC_MSG_CHECKING([for target glibc version])
5717 AC_ARG_WITH([glibc-version],
5718 [AS_HELP_STRING([--with-glibc-version=M.N],
5719 [assume GCC used with glibc version M.N or later])], [
5720 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
5721 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
5722 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
5724 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
5726 glibc_version_major=0
5727 glibc_version_minor=0
5728 [if test -f $target_header_dir/features.h \
5729 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
5730 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
5731 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
5732 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
5734 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
5735 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MAJOR], [$glibc_version_major],
5736 [GNU C Library major version number used on the target, or 0.])
5737 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MINOR], [$glibc_version_minor],
5738 [GNU C Library minor version number used on the target, or 0.])
5740 AC_ARG_ENABLE(gnu-unique-object,
5741 [AS_HELP_STRING([--enable-gnu-unique-object],
5742 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
5743 [case $enable_gnu_unique_object in
5745 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
5746 Valid choices are 'yes' and 'no'.]) ;;
5748 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
5750 [.type foo, '$target_type_format_char'gnu_unique_object],,
5751 # We need to unquote above to to use the definition from config.gcc.
5752 # Also check for ld.so support, i.e. glibc 2.11 or higher.
5753 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
5755 if test x$enable_gnu_unique_object = xyes; then
5756 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
5757 [Define if your assembler supports @gnu_unique_object.])
5760 AC_CACHE_CHECK([assembler for tolerance to line number 0],
5761 [gcc_cv_as_line_zero],
5762 [gcc_cv_as_line_zero=no
5763 if test $in_tree_gas = yes; then
5764 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
5765 elif test "x$gcc_cv_as" != x; then
5766 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
5767 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
5768 test "x`cat conftest.out`" = x
5770 gcc_cv_as_line_zero=yes
5772 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
5773 cat conftest.s >&AS_MESSAGE_LOG_FD
5774 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
5775 cat conftest.out >&AS_MESSAGE_LOG_FD
5777 rm -f conftest.o conftest.s conftest.out
5779 if test "x$gcc_cv_as_line_zero" = xyes; then
5780 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
5781 [Define if the assembler won't complain about a line such as # 0 "" 2.])
5784 AC_MSG_CHECKING(support for thin archives)
5785 thin_archive_support=no
5786 echo 'int main (void) { return 0; }' > conftest.c
5787 if ($AR --version | sed 1q | grep "GNU ar" \
5788 && $CC $CFLAGS -c conftest.c \
5789 && $AR rcT conftest.a conftest.o \
5790 && $CC $CFLAGS $LDFLAGS -o conftest conftest.a) >/dev/null 2>&1; then
5791 thin_archive_support=yes
5793 rm -f conftest.c conftest.o conftest.a conftest
5794 AC_MSG_RESULT($thin_archive_support)
5795 AC_SUBST(thin_archive_support)
5797 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
5798 gcc_cv_ld_eh_frame_hdr=no
5799 if test $in_tree_ld = yes ; then
5800 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
5801 && test $in_tree_ld_is_elf = yes; then
5802 gcc_cv_ld_eh_frame_hdr=yes
5804 elif test x$gcc_cv_ld != x; then
5805 if echo "$ld_ver" | grep GNU > /dev/null; then
5806 # Check if linker supports --eh-frame-hdr option
5807 if $gcc_cv_ld --help 2>&1 | grep eh-frame-hdr > /dev/null; then
5808 gcc_cv_ld_eh_frame_hdr=yes
5813 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
5814 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
5815 gcc_cv_ld_eh_frame_hdr=yes
5821 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
5822 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
5823 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
5824 [Define if your linker supports .eh_frame_hdr.])
5826 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
5828 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
5829 gcc_cv_ld_eh_frame_ciev3=no
5830 if test $in_tree_ld = yes ; then
5831 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5832 && test $in_tree_ld_is_elf = yes; then
5833 gcc_cv_ld_eh_frame_ciev3=yes
5835 elif test x$gcc_cv_ld != x; then
5836 if echo "$ld_ver" | grep GNU > /dev/null; then
5837 gcc_cv_ld_eh_frame_ciev3=yes
5838 if test 0"$ld_date" -lt 20040513; then
5839 if test -n "$ld_date"; then
5840 # If there was date string, but was earlier than 2004-05-13, fail
5841 gcc_cv_ld_eh_frame_ciev3=no
5842 elif test "$ld_vers_major" -lt 2; then
5843 gcc_cv_ld_eh_frame_ciev3=no
5844 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
5845 gcc_cv_ld_eh_frame_ciev3=no
5851 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
5852 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
5853 gcc_cv_ld_eh_frame_ciev3=yes
5859 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
5860 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
5861 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
5862 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
5864 AC_MSG_CHECKING(linker position independent executable support)
5866 if test $in_tree_ld = yes ; then
5868 # Full PIE support on Solaris was only introduced in gld 2.26.
5869 *-*-solaris2*) gcc_gld_pie_min_version=26 ;;
5870 *) gcc_gld_pie_min_version=15 ;;
5872 if test "$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 \
5873 && test $in_tree_ld_is_elf = yes; then
5876 elif test x$gcc_cv_ld != x; then
5877 # Check if linker supports -pie option
5878 if $gcc_cv_ld --help 2>&1 | grep -- -pie > /dev/null; then
5882 if echo "$ld_ver" | grep GNU > /dev/null \
5883 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
5890 *-*-solaris2.1[[1-9]]*)
5891 # Solaris 11.3 added PIE support.
5892 if $gcc_cv_ld -z help 2>&1 | grep -- type.*pie > /dev/null; then
5899 if test x"$gcc_cv_ld_pie" = xyes; then
5900 AC_DEFINE(HAVE_LD_PIE, 1,
5901 [Define if your linker supports PIE option.])
5903 AC_MSG_RESULT($gcc_cv_ld_pie)
5905 AC_MSG_CHECKING(linker PIE support with copy reloc)
5906 gcc_cv_ld_pie_copyreloc=no
5907 if test $gcc_cv_ld_pie = yes ; then
5908 if test $in_tree_ld = yes ; then
5909 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
5910 gcc_cv_ld_pie_copyreloc=yes
5912 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5913 # Check if linker supports -pie option with copy reloc
5915 i?86-*-linux* | x86_64-*-linux*)
5916 cat > conftest1.s <<EOF
5919 .type a_glob, @object
5924 cat > conftest2.s <<EOF
5927 .type main, @function
5929 movl %eax, a_glob(%rip)
5932 .section .data.rel,"aw",@progbits
5937 if $gcc_cv_as --64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5938 && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \
5939 && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5940 && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then
5941 gcc_cv_ld_pie_copyreloc=yes
5943 rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s
5948 AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC,
5949 [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`],
5950 [Define 0/1 if your linker supports -pie option with copy reloc.])
5951 AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc)
5953 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
5954 gcc_cv_ld_eh_gc_sections=no
5955 if test $in_tree_ld = yes ; then
5956 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
5957 && test $in_tree_ld_is_elf = yes; then
5958 gcc_cv_ld_eh_gc_sections=yes
5960 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
5961 cat > conftest.s <<EOF
5964 .type _start, @function
5967 .size _start, .-_start
5968 .section .text.foo,"ax",@progbits
5969 .type foo, @function
5973 .section .gcc_except_table.foo,"a",@progbits
5976 .section .eh_frame,"a",@progbits
5979 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5980 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5981 | grep "gc-sections option ignored" > /dev/null; then
5982 gcc_cv_ld_eh_gc_sections=no
5983 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5984 | grep gcc_except_table > /dev/null; then
5985 gcc_cv_ld_eh_gc_sections=yes
5986 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
5987 if test x$gcc_cv_as_comdat_group != xyes; then
5988 gcc_cv_ld_eh_gc_sections=no
5989 cat > conftest.s <<EOF
5992 .type _start, @function
5995 .size _start, .-_start
5996 .section .gnu.linkonce.t.foo,"ax",@progbits
5997 .type foo, @function
6001 .section .gcc_except_table.foo,"a",@progbits
6004 .section .eh_frame,"a",@progbits
6007 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
6008 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
6009 | grep "gc-sections option ignored" > /dev/null; then
6010 gcc_cv_ld_eh_gc_sections=no
6011 elif $gcc_cv_objdump -h conftest 2> /dev/null \
6012 | grep gcc_except_table > /dev/null; then
6013 gcc_cv_ld_eh_gc_sections=yes
6019 rm -f conftest.s conftest.o conftest
6023 # ??? This apparently exposes a binutils bug with PC-relative relocations.
6024 gcc_cv_ld_eh_gc_sections=no
6027 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
6028 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
6029 [Define if your linker supports garbage collection of
6030 sections in presence of EH frames.])
6032 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
6034 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
6035 gcc_cv_ld_eh_gc_sections_bug=no
6036 if test $in_tree_ld = yes ; then
6037 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
6038 && test $in_tree_ld_is_elf = yes; then
6039 gcc_cv_ld_eh_gc_sections_bug=yes
6041 elif test x$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
6042 gcc_cv_ld_eh_gc_sections_bug=yes
6043 cat > conftest.s <<EOF
6046 .type _start, @function
6049 .size _start, .-_start
6050 .section .text.startup.foo,"ax",@progbits
6051 .type foo, @function
6055 .section .gcc_except_table.foo,"a",@progbits
6058 .section .eh_frame,"a",@progbits
6061 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
6062 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
6063 | grep "gc-sections option ignored" > /dev/null; then
6065 elif $gcc_cv_objdump -h conftest 2> /dev/null \
6066 | grep gcc_except_table > /dev/null; then
6067 gcc_cv_ld_eh_gc_sections_bug=no
6070 rm -f conftest.s conftest.o conftest
6072 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
6073 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
6074 [Define if your linker has buggy garbage collection of
6075 sections support when .text.startup.foo like sections are used.])
6077 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
6079 AC_MSG_CHECKING(linker for compressed debug sections)
6080 # gold/gld support compressed debug sections since binutils 2.19/2.21
6081 # In binutils 2.26, gld gained support for the ELF gABI format.
6082 if test $in_tree_ld = yes ; then
6083 gcc_cv_ld_compress_debug=0
6084 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 19 -o "$gcc_cv_gld_major_version" -gt 2 \
6085 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = yes; then
6086 gcc_cv_ld_compress_debug=2
6087 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
6088 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 26 -o "$gcc_cv_gld_major_version" -gt 2 \
6089 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = no; then
6090 gcc_cv_ld_compress_debug=3
6091 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
6092 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2 \
6093 && test $in_tree_ld_is_elf = yes; then
6094 gcc_cv_ld_compress_debug=1
6096 elif echo "$ld_ver" | grep GNU > /dev/null; then
6097 if test "$ld_vers_major" -lt 2 \
6098 || test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 21; then
6099 gcc_cv_ld_compress_debug=0
6100 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
6101 gcc_cv_ld_compress_debug=1
6103 gcc_cv_ld_compress_debug=3
6104 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
6106 if test $ld_is_gold = yes; then
6107 gcc_cv_ld_compress_debug=2
6108 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
6114 # Introduced in Solaris 11.2.
6115 if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then
6116 gcc_cv_ld_compress_debug=3
6117 gcc_cv_ld_compress_debug_option="-z compress-sections"
6119 gcc_cv_ld_compress_debug=0
6123 # Assume linkers other than GNU ld don't support compessed debug
6125 gcc_cv_ld_compress_debug=0
6130 AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug,
6131 [Define to the level of your linker's compressed debug section support.])
6132 AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option",
6133 [Define to the linker option to enable compressed debug sections.])
6134 AC_MSG_RESULT($gcc_cv_ld_compress_debug)
6136 if test x"$ld64_flag" = x"yes"; then
6138 # Set defaults for possibly untestable items.
6139 gcc_cv_ld64_export_dynamic=0
6141 if test "$build" = "$host"; then
6147 # On Darwin, because of FAT library support, it is often possible to execute
6148 # exes from compatible archs even when the host differs from the build system.
6149 case "$build","$host" in
6150 x86_64-*-darwin*,i?86-*-darwin* | powerpc64*-*-darwin*,powerpc*-*-darwin*)
6155 # If the configurer specified a minimum ld64 version to be supported, then use
6156 # that to determine feature support.
6157 if test x"${gcc_cv_ld64_version}" != x; then
6158 AC_MSG_CHECKING(ld64 specified version)
6159 gcc_cv_ld64_major=`echo "$gcc_cv_ld64_version" | sed -e 's/\..*//'`
6160 AC_MSG_RESULT($gcc_cv_ld64_major)
6161 if test "$gcc_cv_ld64_major" -ge 236; then
6162 gcc_cv_ld64_export_dynamic=1
6164 elif test -x "$gcc_cv_ld" -a "$darwin_try_test" -eq 1; then
6165 # If the version was not specified, try to find it.
6166 AC_MSG_CHECKING(linker version)
6167 if test x"${gcc_cv_ld64_version}" = x; then
6168 gcc_cv_ld64_version=`$gcc_cv_ld -v 2>&1 | grep ld64 | sed s/.*ld64-// | awk '{print $1}'`
6170 AC_MSG_RESULT($gcc_cv_ld64_version)
6172 AC_MSG_CHECKING(linker for -export_dynamic support)
6173 gcc_cv_ld64_export_dynamic=1
6174 if $gcc_cv_ld -export_dynamic < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then
6175 gcc_cv_ld64_export_dynamic=0
6177 AC_MSG_RESULT($gcc_cv_ld64_export_dynamic)
6180 if test x"${gcc_cv_ld64_version}" != x; then
6181 AC_DEFINE_UNQUOTED(LD64_VERSION, "${gcc_cv_ld64_version}",
6182 [Define to ld64 version.])
6185 AC_DEFINE_UNQUOTED(LD64_HAS_EXPORT_DYNAMIC, $gcc_cv_ld64_export_dynamic,
6186 [Define to 1 if ld64 supports '-export_dynamic'.])
6193 AC_CACHE_CHECK(linker --as-needed support,
6194 gcc_cv_ld_as_needed,
6195 [gcc_cv_ld_as_needed=no
6196 gcc_cv_ld_as_needed_option='--as-needed'
6197 gcc_cv_ld_no_as_needed_option='--no-as-needed'
6198 if test $in_tree_ld = yes ; then
6199 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
6200 && test $in_tree_ld_is_elf = yes; then
6201 gcc_cv_ld_as_needed=yes
6202 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 28; then
6203 gcc_cv_ld_as_needed_option='--push-state --as-needed'
6204 gcc_cv_ld_no_as_needed_option='--pop-state'
6207 elif test x$gcc_cv_ld != x; then
6208 # Check if linker supports --as-needed and --no-as-needed options
6209 if $gcc_cv_ld --help 2>&1 | grep as-needed > /dev/null; then
6210 gcc_cv_ld_as_needed=yes
6211 if $gcc_cv_ld --help 2>&1 | grep push-state > /dev/null \
6212 && $gcc_cv_ld --help 2>&1 | grep pop-state > /dev/null \
6213 && echo "$ld_ver" | grep GNU > /dev/null \
6214 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 28; then
6215 # Use these options only when both ld.bfd and ld.gold support
6216 # --push-state/--pop-state, which unfortunately wasn't added
6218 gcc_cv_ld_as_needed_option='--push-state --as-needed'
6219 gcc_cv_ld_no_as_needed_option='--pop-state'
6222 case "$target:$gnu_ld" in
6224 # Solaris 2 ld always supports -z ignore/-z record. Prefer the native
6226 gcc_cv_ld_as_needed=yes
6227 gcc_cv_ld_as_needed_option="-z ignore"
6228 gcc_cv_ld_no_as_needed_option="-z record"
6232 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
6233 # dl_iterate_phdr, i.e. since Solaris 11.
6235 *-*-solaris2.1[[1-9]]*)
6237 i?86-*-* | x86_64-*-*)
6238 if echo "$ld_ver" | grep GNU > /dev/null; then
6239 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
6240 gcc_cv_ld_as_needed=no
6246 gcc_cv_ld_as_needed=no
6250 if test x"$gcc_cv_ld_as_needed" = xyes; then
6251 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
6252 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
6253 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
6254 [Define to the linker option to ignore unused dependencies.])
6255 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
6256 [Define to the linker option to keep unused dependencies.])
6259 AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities)
6260 saved_LDFLAGS="$LDFLAGS"
6261 for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do
6262 LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map"
6263 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
6264 [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no])
6266 LDFLAGS="$saved_LDFLAGS"
6267 if test "x$gcc_cv_ld_clearcap" = xyes; then
6268 AC_DEFINE([HAVE_LD_CLEARCAP], 1,
6269 [Define if the linker supports clearing hardware capabilities via mapfile.])
6270 AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map])
6272 AC_MSG_RESULT($gcc_cv_ld_clearcap)
6278 emul_name="-melf32lppc"
6281 emul_name="-melf32ppc"
6284 AC_CACHE_CHECK(linker .gnu.attributes long double support,
6286 [gcc_cv_ld_ppc_attr=no
6287 if test x"$ld_is_gold" = xyes; then
6288 gcc_cv_ld_ppc_attr=yes
6289 elif test $in_tree_ld = yes ; then
6290 if test "$gcc_cv_gld_major_version" -eq 2 \
6291 -a "$gcc_cv_gld_minor_version" -ge 28 \
6292 -o "$gcc_cv_gld_major_version" -gt 2; then
6293 gcc_cv_ld_ppc_attr=yes
6295 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6296 # check that merging the long double .gnu_attribute doesn't warn
6297 cat > conftest1.s <<EOF
6300 cat > conftest2.s <<EOF
6303 if $gcc_cv_as -a32 -o conftest1.o conftest1.s > /dev/null 2>&1 \
6304 && $gcc_cv_as -a32 -o conftest2.o conftest2.s > /dev/null 2>&1 \
6305 && $gcc_cv_ld $emul_name -r -o conftest.o conftest1.o conftest2.o > /dev/null 2> conftest.err \
6306 && test ! -s conftest.err; then
6307 gcc_cv_ld_ppc_attr=yes
6309 rm -f conftest.err conftest.o conftest1.o conftest2.o conftest1.s conftest2.s
6312 if test x$gcc_cv_ld_ppc_attr = xyes; then
6313 AC_DEFINE(HAVE_LD_PPC_GNU_ATTR_LONG_DOUBLE, 1,
6314 [Define if your PowerPC linker has .gnu.attributes long double support.])
6319 case "$target:$tm_file" in
6320 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
6323 emul_name="-melf64lppc"
6326 emul_name="-melf64ppc"
6329 emul_name="-melf64lppc_fbsd"
6332 emul_name="-melf64ppc_fbsd"
6335 AC_CACHE_CHECK(linker support for omitting dot symbols,
6336 gcc_cv_ld_no_dot_syms,
6337 [gcc_cv_ld_no_dot_syms=no
6338 if test x"$ld_is_gold" = xyes; then
6339 gcc_cv_ld_no_dot_syms=yes
6340 elif test $in_tree_ld = yes ; then
6341 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
6342 gcc_cv_ld_no_dot_syms=yes
6344 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6345 cat > conftest1.s <<EOF
6349 cat > conftest2.s <<EOF
6350 .section ".opd","aw"
6355 .quad .LEfoo,.TOC.@tocbase,0
6361 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
6362 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
6363 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
6364 gcc_cv_ld_no_dot_syms=yes
6366 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
6369 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
6370 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
6371 [Define if your PowerPC64 linker only needs function descriptor syms.])
6374 AC_CACHE_CHECK(linker large toc support,
6375 gcc_cv_ld_large_toc,
6376 [gcc_cv_ld_large_toc=no
6377 if test x"$ld_is_gold" = xyes; then
6378 gcc_cv_ld_large_toc=yes
6379 elif test $in_tree_ld = yes ; then
6380 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
6381 gcc_cv_ld_large_toc=yes
6383 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6384 cat > conftest.s <<EOF
6385 .section ".tbss","awT",@nobits
6391 addis 9,13,ie0@got@tprel@ha
6392 ld 9,ie0@got@tprel@l(9)
6394 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
6395 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
6396 gcc_cv_ld_large_toc=yes
6398 rm -f conftest conftest.o conftest.s
6401 if test x"$gcc_cv_ld_large_toc" = xyes; then
6402 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
6403 [Define if your PowerPC64 linker supports a large TOC.])
6406 AC_CACHE_CHECK(linker toc pointer alignment,
6407 gcc_cv_ld_toc_align,
6408 [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then
6409 cat > conftest.s <<EOF
6414 .section .data.rel.ro,"aw",@progbits
6419 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
6420 && $gcc_cv_ld $emul_name -z norelro -o conftest conftest.o > /dev/null 2>&1; then
6421 gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'`
6423 rm -f conftest conftest.o conftest.s
6426 if test -n "$gcc_cv_ld_toc_align" && test $gcc_cv_ld_toc_align -gt 8; then
6427 AC_DEFINE_UNQUOTED(POWERPC64_TOC_POINTER_ALIGNMENT, $gcc_cv_ld_toc_align,
6428 [Define to .TOC. alignment forced by your linker.])
6435 AC_CACHE_CHECK(linker large toc support,
6436 gcc_cv_ld_large_toc,
6437 [gcc_cv_ld_large_toc=no
6438 if test x$gcc_cv_as != x ; then
6439 cat > conftest.s <<EOF
6449 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
6450 gcc_cv_ld_large_toc=yes
6452 rm -f conftest conftest.o conftest.s
6455 if test x"$gcc_cv_ld_large_toc" = xyes; then
6456 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
6457 [Define if your PowerPC64 linker supports a large TOC.])
6462 AC_CACHE_CHECK(linker --build-id support,
6464 [gcc_cv_ld_buildid=no
6465 if test $in_tree_ld = yes ; then
6466 if test "$gcc_cv_gld_major_version" -eq 2 -a \
6467 "$gcc_cv_gld_minor_version" -ge 18 -o \
6468 "$gcc_cv_gld_major_version" -gt 2 \
6469 && test $in_tree_ld_is_elf = yes; then
6470 gcc_cv_ld_buildid=yes
6472 elif test x$gcc_cv_ld != x; then
6473 if $gcc_cv_ld --help 2>&1 | grep build-id > /dev/null; then
6474 gcc_cv_ld_buildid=yes
6477 if test x"$gcc_cv_ld_buildid" = xyes; then
6478 AC_DEFINE(HAVE_LD_BUILDID, 1,
6479 [Define if your linker supports --build-id.])
6482 AC_ARG_ENABLE(linker-build-id,
6483 [AS_HELP_STRING([--enable-linker-build-id],
6484 [compiler will always pass --build-id to linker])],
6486 enable_linker_build_id=no)
6488 if test x"$enable_linker_build_id" = xyes; then
6489 if test x"$gcc_cv_ld_buildid" = xyes; then
6490 AC_DEFINE(ENABLE_LD_BUILDID, 1,
6491 [Define if gcc should always pass --build-id to linker.])
6493 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
6497 # In binutils 2.21, GNU ld gained support for new emulations fully
6498 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
6499 AC_CACHE_CHECK(linker *_sol2 emulation support,
6500 gcc_cv_ld_sol2_emulation,
6501 [gcc_cv_ld_sol2_emulation=no
6502 if test $in_tree_ld = yes ; then
6503 if test "$gcc_cv_gld_major_version" -eq 2 -a \
6504 "$gcc_cv_gld_minor_version" -ge 21 -o \
6505 "$gcc_cv_gld_major_version" -gt 2 \
6506 && test $in_tree_ld_is_elf = yes; then
6507 gcc_cv_ld_sol2_emulation=yes
6509 elif test x$gcc_cv_ld != x; then
6510 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
6511 grep _sol2 > /dev/null; then
6512 gcc_cv_ld_sol2_emulation=yes
6515 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
6516 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
6517 [Define if your linker supports the *_sol2 emulations.])
6520 AC_CACHE_CHECK(linker --sysroot support,
6522 [gcc_cv_ld_sysroot=no
6523 if test $in_tree_ld = yes ; then
6524 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
6525 gcc_cv_ld_sysroot=yes
6527 elif test x$gcc_cv_ld != x; then
6528 if $gcc_cv_ld --help 2>&1 | grep sysroot > /dev/null; then
6529 gcc_cv_ld_sysroot=yes
6532 if test x"$gcc_cv_ld_sysroot" = xyes; then
6533 AC_DEFINE(HAVE_LD_SYSROOT, 1,
6534 [Define if your linker supports --sysroot.])
6539 # Check for system-provided CRTs on Solaris 11.x and Solaris 12.
6540 AC_CACHE_CHECK([system-provided CRTs on Solaris],
6541 gcc_cv_solaris_crts,
6542 [gcc_cv_solaris_crts=no
6543 if test x$host != x$target; then
6544 if test "x$with_sysroot" = xyes; then
6545 target_sysroot="${test_exec_prefix}/${target_noncanonical}/sys-root"
6547 target_sysroot="${with_sysroot}"
6550 target_libdir="$target_sysroot/usr/lib"
6551 # At the time they were added, gcrt1.o became a symlink for backwards
6552 # compatibility on x86, while crt1.o was added on sparc, so check for that.
6554 i?86-*-solaris2* | x86_64-*-solaris2*)
6555 if test -h "$target_libdir/gcrt1.o"; then gcc_cv_solaris_crts=yes; fi
6558 if test -f "$target_libdir/crt1.o"; then gcc_cv_solaris_crts=yes; fi
6563 if test x$gcc_cv_solaris_crts = xyes; then
6564 AC_DEFINE(HAVE_SOLARIS_CRTS, 1,
6565 [Define if the system-provided CRTs are present on Solaris.])
6568 AC_ARG_ENABLE(libssp,
6569 [AS_HELP_STRING([--enable-libssp], [enable linking against libssp])],
6570 [case "${enableval}" in
6574 AC_MSG_ERROR([unknown libssp setting $enableval])
6578 # Test for stack protector support in target C library.
6579 AC_CACHE_CHECK(__stack_chk_fail in target C library,
6580 gcc_cv_libc_provides_ssp,
6581 [gcc_cv_libc_provides_ssp=no
6582 if test "x$enable_libssp" = "xno"; then
6583 gcc_cv_libc_provides_ssp=yes
6584 elif test "x$enable_libssp" = "xyes"; then
6585 gcc_cv_libc_provides_ssp=no
6589 # All versions of musl provide stack protector
6590 gcc_cv_libc_provides_ssp=yes;;
6591 *-*-linux* | *-*-kfreebsd*-gnu)
6592 # glibc 2.4 and later provides __stack_chk_fail and
6593 # either __stack_chk_guard, or TLS access to stack guard canary.
6594 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
6595 [if test -f $target_header_dir/features.h \
6596 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
6597 $target_header_dir/features.h > /dev/null; then
6598 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
6599 $target_header_dir/features.h > /dev/null && \
6600 test -f $target_header_dir/bits/uClibc_config.h && \
6601 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
6602 $target_header_dir/bits/uClibc_config.h > /dev/null; then
6603 gcc_cv_libc_provides_ssp=yes
6605 # all versions of Bionic support stack protector
6606 elif test -f $target_header_dir/sys/cdefs.h \
6607 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
6608 $target_header_dir/sys/cdefs.h > /dev/null; then
6609 gcc_cv_libc_provides_ssp=yes
6613 # Avoid complicated tests (see
6614 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
6615 # simply assert that glibc does provide this, which is true for all
6616 # realistically usable GNU/Hurd configurations.
6617 # All supported versions of musl provide it as well
6618 gcc_cv_libc_provides_ssp=yes;;
6619 *-*-darwin* | *-*-freebsd* | *-*-netbsd*)
6620 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
6621 [echo "no __stack_chk_fail on this target"])
6623 *) gcc_cv_libc_provides_ssp=no ;;
6627 if test x$gcc_cv_libc_provides_ssp = xyes; then
6628 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
6629 [Define if your target C library provides stack protector support])
6632 # Check whether --enable-default-ssp was given.
6633 AC_ARG_ENABLE(default-ssp,
6634 [AS_HELP_STRING([--enable-default-ssp],
6635 [enable Stack Smashing Protection as default])],[
6636 if test x$gcc_cv_libc_provides_ssp = xyes; then
6638 ia64*-*-*) enable_default_ssp=no ;;
6639 *) enable_default_ssp=$enableval ;;
6642 enable_default_ssp=no
6644 enable_default_ssp=no)
6645 if test x$enable_default_ssp = xyes ; then
6646 AC_DEFINE(ENABLE_DEFAULT_SSP, 1,
6647 [Define if your target supports default stack protector and it is enabled.])
6649 AC_SUBST([enable_default_ssp])
6651 # Test for <sys/sdt.h> on the target.
6652 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
6653 AC_MSG_CHECKING(sys/sdt.h in the target C library)
6655 if test -f $target_header_dir/sys/sdt.h; then
6657 AC_DEFINE(HAVE_SYS_SDT_H, 1,
6658 [Define if your target C library provides sys/sdt.h])
6660 AC_MSG_RESULT($have_sys_sdt_h)
6662 # Check if TFmode long double should be used by default or not.
6663 # Some glibc targets used DFmode long double, but with glibc 2.4
6664 # and later they can use TFmode.
6666 powerpc*-*-linux* | \
6670 AC_ARG_WITH(long-double-128,
6671 [AS_HELP_STRING([--with-long-double-128],
6672 [use 128-bit long double by default])],
6673 gcc_cv_target_ldbl128="$with_long_double_128", [
6675 s390*-*-linux-musl*)
6676 gcc_cv_target_ldbl128=yes
6678 powerpc*-*-linux-musl*)
6679 gcc_cv_target_ldbl128=no
6682 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
6683 [gcc_cv_target_ldbl128=no
6684 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
6685 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
6686 && gcc_cv_target_ldbl128=yes
6694 if test x$gcc_cv_target_ldbl128 = xyes; then
6695 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
6696 [Define if TFmode long double should be the default])
6699 # Check if TFmode long double target should use the IBM extended double or IEEE
6700 # 128-bit floating point formats if long doubles are 128-bits long. The long
6701 # double type can only be switched on powerpc64 bit Linux systems where VSX is
6702 # supported. Other PowerPC systems do not build the IEEE 128-bit emulator in
6704 AC_ARG_WITH([long-double-format],
6705 [AS_HELP_STRING([--with-long-double-format={ieee,ibm}]
6706 [Specify whether PowerPC long double uses IEEE or IBM format])],[
6707 case "$target:$with_long_double_format" in
6708 powerpc64le-*-linux*:ieee | powerpc64le-*-linux*:ibm)
6711 powerpc64-*-linux*:ieee | powerpc64-*-linux*:ibm)
6712 # IEEE 128-bit emulation is only built on 64-bit VSX Linux systems
6714 power7 | power8 | power9 | power1*)
6718 AC_MSG_ERROR([Configuration option --with-long-double-format is only \
6719 supported if the default cpu is power7 or newer])
6720 with_long_double_format=""
6724 powerpc64*-*-linux*:*)
6725 AC_MSG_ERROR([--with-long-double-format argument should be ibm or ieee])
6726 with_long_double_format=""
6729 AC_MSG_ERROR([Configure option --with-long-double-format is only supported \
6730 on 64-bit PowerPC VSX Linux systems])
6731 with_long_double_format=""
6736 # Check if the target LIBC supports exporting the AT_PLATFORM and AT_HWCAP
6737 # values in the TCB. Currently, only GLIBC 2.23 and later support this.
6738 gcc_cv_libc_provides_hwcap_in_tcb=no
6741 GCC_GLIBC_VERSION_GTE_IFELSE([2], [23], [gcc_cv_libc_provides_hwcap_in_tcb=yes], )
6744 if test x$gcc_cv_libc_provides_hwcap_in_tcb = xyes; then
6745 AC_DEFINE(TARGET_LIBC_PROVIDES_HWCAP_IN_TCB, 1,
6746 [Define if your target C Library provides the AT_HWCAP value in the TCB])
6749 # Check if the target LIBC handles PT_GNU_STACK.
6750 gcc_cv_libc_gnustack=unknown
6753 GCC_GLIBC_VERSION_GTE_IFELSE([2], [31], [gcc_cv_libc_gnustack=yes], )
6756 if test x$gcc_cv_libc_gnustack = xyes; then
6757 AC_DEFINE(TARGET_LIBC_GNUSTACK, 1,
6758 [Define if your target C Library properly handles PT_GNU_STACK])
6761 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
6762 gcc_cv_target_dl_iterate_phdr=unknown
6765 # <link.h> needs both a dl_iterate_phdr declaration and support for
6766 # compilation with largefile support.
6767 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
6768 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
6769 gcc_cv_target_dl_iterate_phdr=yes
6771 gcc_cv_target_dl_iterate_phdr=no
6774 *-*-dragonfly* | *-*-freebsd*)
6775 if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then
6776 gcc_cv_target_dl_iterate_phdr=yes
6778 gcc_cv_target_dl_iterate_phdr=no
6782 gcc_cv_target_dl_iterate_phdr=yes
6785 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
6786 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
6787 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
6788 [Define if your target C library provides the `dl_iterate_phdr' function.])
6790 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
6792 # We no longer support different GC mechanisms. Emit an error if
6793 # the user configures with --with-gc.
6795 [AS_HELP_STRING([--with-gc={page,zone}],
6796 [this option is not supported anymore. It used to choose
6797 the garbage collection mechanism to use with the compiler])],
6798 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
6801 # Libraries to use on the host. This will normally be set by the top
6802 # level Makefile. Here we simply capture the value for our Makefile.
6803 if test -z "${HOST_LIBS+set}"; then
6808 # Use the system's zlib library.
6811 dnl Very limited version of automake's enable-maintainer-mode
6813 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
6814 dnl maintainer-mode is disabled by default
6815 AC_ARG_ENABLE(maintainer-mode,
6816 [AS_HELP_STRING([--enable-maintainer-mode],
6817 [enable make rules and dependencies not useful
6818 (and sometimes confusing) to the casual installer])],
6819 maintainer_mode=$enableval,
6822 AC_MSG_RESULT($maintainer_mode)
6824 if test "$maintainer_mode" = "yes"; then
6831 dnl Whether to prevent multiple front-ends from linking at the same time
6833 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
6834 AC_ARG_ENABLE(link-mutex,
6835 [AS_HELP_STRING([--enable-link-mutex],
6836 [avoid linking multiple front-ends at once to avoid thrashing
6837 on the build machine])],
6838 do_link_mutex=$enableval,
6840 AC_MSG_RESULT($do_link_mutex)
6842 if test "$do_link_mutex" = "yes"; then
6847 AC_SUBST(DO_LINK_MUTEX)
6849 dnl Whether to prevent multiple GCC front-ends from linking at the same time
6851 AC_MSG_CHECKING([whether to serialize linking of multiple front-ends])
6852 AC_ARG_ENABLE(link-serialization,
6853 [AS_HELP_STRING([--enable-link-serialization],
6854 [avoid linking multiple GCC front-ends at once using make
6855 dependencies to avoid thrashing on the build machine])],
6856 do_link_serialization=$enableval,
6857 do_link_serialization=no)
6858 AC_MSG_RESULT($do_link_serialization)
6860 case "$do_link_serialization" in
6862 DO_LINK_SERIALIZATION=1;;
6863 [[1-9]] | [[1-9]][[0-9]] | [[1-9]][[0-9]][[0-9]])
6864 DO_LINK_SERIALIZATION=$do_link_serialization;;
6866 DO_LINK_SERIALIZATION=;;
6868 AC_MSG_ERROR(bad value ${do_link_serialization} given for --enable-link-serialization) ;;
6870 AC_SUBST(DO_LINK_SERIALIZATION)
6876 # Make empty files to contain the specs and options for each language.
6877 # Then add #include lines to for a compiler that has specs and/or options.
6883 # These (without "all_") are set in each config-lang.in.
6884 # `language' must be a single word so is spelled singularly.
6887 all_outputs='Makefile'
6888 # List of language configure and makefile fragments.
6889 all_lang_configurefrags=
6891 # Additional files for gengtype
6892 all_gtfiles="$target_gtfiles"
6894 # These are the languages that are set in --enable-languages,
6895 # and are available in the GCC tree.
6896 all_selected_languages=
6898 # Add the language fragments.
6899 # Languages are added via two mechanisms. Some information must be
6900 # recorded in makefile variables, these are defined in config-lang.in.
6901 # We accumulate them and plug them into the main Makefile.
6902 # The other mechanism is a set of hooks for each of the main targets
6903 # like `clean', `install', etc.
6905 language_hooks="Make-hooks"
6907 for lang in ${srcdir}/*/config-lang.in
6910 test "$lang" = "${srcdir}/*/config-lang.in" && continue
6912 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
6913 if test "x$lang_alias" = x
6915 echo "$lang doesn't set \$language." 1>&2
6918 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
6919 subdirs="$subdirs $subdir"
6921 # $gcc_subdir is where the gcc integration files are to be found
6922 # for a language, both for internal compiler purposes (compiler
6923 # sources implementing front-end to GCC tree converters), and for
6924 # build infrastructure purposes (Make-lang.in, etc.)
6926 # This will be <subdir> (relative to $srcdir) if a line like
6927 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
6928 # is found in <langdir>/config-lang.in, and will remain <langdir>
6931 # Except for the language alias (fetched above), the regular
6932 # "config-lang.in" contents are always retrieved from $gcc_subdir,
6933 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
6934 # only this and the language alias.
6936 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
6937 if [ "$gcc_subdir" = "" ]; then
6938 gcc_subdir="$subdir"
6941 case ",$enable_languages," in
6943 all_selected_languages="$all_selected_languages $lang_alias"
6944 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
6945 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
6957 . ${srcdir}/$gcc_subdir/config-lang.in
6958 if test "x$language" = x
6960 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
6965 case ",$enable_languages," in
6968 for i in $subdir_requires; do
6969 test -f "${srcdir}/$i/config-lang.in" && continue
6977 all_lang_configurefrags="$all_lang_configurefrags \$(srcdir)/$gcc_subdir/config-lang.in"
6978 if test "x$language" = xc && test -n "$all_lang_makefrags"; then
6979 # Put c/Make-lang.in fragment first to match serialization languages order.
6980 all_lang_makefrags="\$(srcdir)/$gcc_subdir/Make-lang.in $all_lang_makefrags"
6982 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
6984 if test -f $srcdir/$gcc_subdir/lang.opt; then
6985 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
6986 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
6988 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
6989 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
6991 all_languages="$all_languages $language"
6992 all_compilers="$all_compilers $compilers"
6993 all_outputs="$all_outputs $outputs"
6994 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
6995 case ",$enable_languages," in
6997 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
6999 AC_SUBST(enable_lto)
7006 for language in $all_selected_languages
7008 check_languages="$check_languages check-$language"
7012 for language in $all_selected_languages
7014 selftest_languages="$selftest_languages selftest-$language"
7017 # We link each language in with a set of hooks, reached indirectly via
7018 # lang.${target}. Only do so for selected languages.
7022 target_list="all.cross start.encap rest.encap tags \
7023 install-common install-man install-info install-pdf install-html dvi \
7024 pdf html uninstall info man srcextra srcman srcinfo \
7025 mostlyclean clean distclean maintainer-clean install-plugin"
7027 for t in $target_list
7030 for lang in $all_selected_languages
7034 echo "lang.$t: $x" >> Make-hooks
7037 echo "ifeq (\$(DO_LINK_SERIALIZATION),)" >> Make-hooks
7038 echo "SERIAL_LIST =" >> Make-hooks
7039 echo else >> Make-hooks
7043 serialization_languages=c
7044 for lang in $all_selected_languages
7046 test $lang = c && continue
7047 if test $lang = lto; then
7048 serialization_languages="$serialization_languages lto1 lto2"
7050 serialization_languages="$serialization_languages $lang"
7053 for lang in $serialization_languages
7055 test $lang = c && continue
7056 lang_cnt=`expr $lang_cnt + 1`
7057 lang_list=" $prev$lang_list"
7060 echo "SERIAL_LIST = \$(wordlist \$(DO_LINK_SERIALIZATION),$lang_cnt,$lang_list)" >> Make-hooks
7061 echo endif >> Make-hooks
7062 echo "SERIAL_COUNT = `expr $lang_cnt + 1`" >> Make-hooks
7063 echo "INDEX.c = 0" >> Make-hooks
7065 for lang in $serialization_languages
7067 test $lang = c && continue
7068 echo "$lang.prev = \$(if \$(word $lang_cnt,\$(SERIAL_LIST)),\$(\$(word $lang_cnt,\$(SERIAL_LIST)).serial))" >> Make-hooks
7069 echo "INDEX.$lang = $lang_idx" >> Make-hooks
7070 lang_cnt=`expr $lang_cnt - 1`
7071 lang_idx=`expr $lang_idx + 1`
7075 # Option include files
7078 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
7079 option_includes="option-includes.mk"
7080 AC_SUBST_FILE(option_includes)
7088 echo "dir ." > .gdbinit
7089 echo "dir ${srcdir}" >> .gdbinit
7090 if test x$gdb_needs_out_file_path = xyes
7092 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
7094 if test "x$subdirs" != x; then
7097 echo "dir ${srcdir}/$s" >> .gdbinit
7100 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
7101 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
7103 # Put a breakpoint on __asan_report_error to help with debugging buffer
7106 *-fsanitize=address*)
7107 echo "source ${srcdir}/gdbasan.in" >> .gdbinit
7111 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
7112 AC_SUBST(gcc_tooldir)
7115 # Find a directory in which to install a shared libgcc.
7117 AC_ARG_ENABLE(version-specific-runtime-libs,
7118 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
7119 [specify that runtime libraries should be
7120 installed in a compiler-specific directory])])
7122 # Substitute configuration variables
7125 AC_SUBST(all_compilers)
7126 AC_SUBST(all_gtfiles)
7127 AC_SUBST(all_lang_configurefrags)
7128 AC_SUBST(all_lang_makefrags)
7129 AC_SUBST(all_languages)
7130 AC_SUBST(all_selected_languages)
7131 AC_SUBST(build_exeext)
7132 AC_SUBST(build_install_headers_dir)
7133 AC_SUBST(build_xm_file_list)
7134 AC_SUBST(build_xm_include_list)
7135 AC_SUBST(build_xm_defines)
7136 AC_SUBST(build_file_translate)
7137 AC_SUBST(check_languages)
7138 AC_SUBST(selftest_languages)
7139 AC_SUBST(cpp_install_dir)
7140 AC_SUBST(xmake_file)
7141 AC_SUBST(tmake_file)
7142 AC_SUBST(TM_ENDIAN_CONFIG)
7143 AC_SUBST(TM_MULTILIB_CONFIG)
7144 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
7145 AC_SUBST(extra_gcc_objs)
7146 AC_SUBST(user_headers_inc_next_pre)
7147 AC_SUBST(user_headers_inc_next_post)
7148 AC_SUBST(extra_headers_list)
7149 AC_SUBST(extra_objs)
7150 AC_SUBST(extra_programs)
7151 AC_SUBST(float_h_file)
7152 AC_SUBST(gcc_config_arguments)
7153 AC_SUBST(gcc_gxx_include_dir)
7154 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
7155 AC_SUBST(gcc_gxx_libcxx_include_dir)
7156 AC_SUBST(gcc_gxx_libcxx_include_dir_add_sysroot)
7157 AC_SUBST(host_exeext)
7158 AC_SUBST(host_xm_file_list)
7159 AC_SUBST(host_xm_include_list)
7160 AC_SUBST(host_xm_defines)
7161 AC_SUBST(out_host_hook_obj)
7163 AC_SUBST(lang_opt_files)
7164 AC_SUBST(lang_specs_files)
7165 AC_SUBST(lang_tree_files)
7166 AC_SUBST(local_prefix)
7168 AC_SUBST(objc_boehm_gc)
7170 AC_SUBST(out_object_file)
7171 AC_SUBST(common_out_file)
7172 AC_SUBST(common_out_object_file)
7173 AC_SUBST(tm_file_list)
7174 AC_SUBST(tm_include_list)
7175 AC_SUBST(tm_defines)
7176 AC_SUBST(tm_p_file_list)
7177 AC_SUBST(tm_p_include_list)
7178 AC_SUBST(tm_d_file_list)
7179 AC_SUBST(tm_d_include_list)
7180 AC_SUBST(xm_file_list)
7181 AC_SUBST(xm_include_list)
7182 AC_SUBST(xm_defines)
7183 AC_SUBST(use_gcc_stdint)
7184 AC_SUBST(c_target_objs)
7185 AC_SUBST(cxx_target_objs)
7186 AC_SUBST(fortran_target_objs)
7187 AC_SUBST(d_target_objs)
7188 AC_SUBST(target_cpu_default)
7190 AC_SUBST_FILE(language_hooks)
7193 if test x${build} = x${host} ; then
7194 if test x${host} = x${target} ; then
7195 echo "Links are now set up to build a native compiler for ${target}." 1>&2
7197 echo "Links are now set up to build a cross-compiler" 1>&2
7198 echo " from ${host} to ${target}." 1>&2
7201 if test x${host} = x${target} ; then
7202 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
7203 echo " for ${target}." 1>&2
7205 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
7206 echo " from ${host} to ${target}." 1>&2
7210 AC_ARG_VAR(GMPLIBS,[How to link GMP])
7211 AC_ARG_VAR(GMPINC,[How to find GMP include files])
7213 AC_ARG_VAR(ISLLIBS,[How to link isl])
7214 AC_ARG_VAR(ISLINC,[How to find isl include files])
7215 if test "x${ISLLIBS}" != "x" ; then
7216 AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.])
7220 AC_SUBST(pluginlibs)
7221 AC_SUBST(enable_plugin)
7222 if test x"$enable_plugin" = x"yes"; then
7223 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
7227 # Enable --enable-host-shared
7228 AC_ARG_ENABLE(host-shared,
7229 [AS_HELP_STRING([--enable-host-shared],
7230 [build host code as shared libraries])],
7231 [PICFLAG=-fPIC], [PICFLAG=])
7232 AC_SUBST(enable_host_shared)
7236 AC_ARG_ENABLE(libquadmath-support,
7237 [AS_HELP_STRING([--disable-libquadmath-support],
7238 [disable libquadmath support for Fortran])],
7239 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
7240 ENABLE_LIBQUADMATH_SUPPORT=yes)
7241 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
7242 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
7243 [Define to 1 to enable libquadmath support])
7247 # Specify what hash style to use by default.
7248 AC_ARG_WITH([linker-hash-style],
7249 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
7250 [specify the linker hash style])],
7251 [case x"$withval" in
7253 LINKER_HASH_STYLE=sysv
7256 LINKER_HASH_STYLE=gnu
7259 LINKER_HASH_STYLE=both
7262 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
7265 [LINKER_HASH_STYLE=''])
7266 if test x"${LINKER_HASH_STYLE}" != x; then
7267 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
7268 [The linker hash style])
7271 # Specify what should be the default of -fdiagnostics-color option.
7272 AC_ARG_WITH([diagnostics-color],
7273 [AC_HELP_STRING([--with-diagnostics-color={never,auto,auto-if-env,always}],
7274 [specify the default of -fdiagnostics-color option
7275 auto-if-env stands for -fdiagnostics-color=auto if
7276 GCC_COLOR environment variable is present and
7277 -fdiagnostics-color=never otherwise])],
7278 [case x"$withval" in
7280 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_NO
7283 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO
7286 DIAGNOSTICS_COLOR_DEFAULT=-1
7289 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_YES
7292 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-color])
7295 [DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO])
7296 AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT,
7297 [The default for -fdiagnostics-color option])
7299 # Specify what should be the default of -fdiagnostics-urls option.
7300 AC_ARG_WITH([diagnostics-urls],
7301 [AC_HELP_STRING([--with-diagnostics-urls={never,auto,auto-if-env,always}],
7302 [specify the default of -fdiagnostics-urls option
7303 auto-if-env stands for -fdiagnostics-urls=auto if
7304 GCC_URLS or TERM_URLS environment variable is present and
7305 -fdiagnostics-urls=never otherwise])],
7306 [case x"$withval" in
7308 DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_NO
7311 DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_AUTO
7314 DIAGNOSTICS_URLS_DEFAULT=-1
7317 DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_YES
7320 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-urls])
7323 [DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_AUTO])
7324 AC_DEFINE_UNQUOTED(DIAGNOSTICS_URLS_DEFAULT, $DIAGNOSTICS_URLS_DEFAULT,
7325 [The default for -fdiagnostics-urls option])
7327 # Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit
7328 # of jit/jit-playback.c.
7329 gcc_driver_version=`eval "${get_gcc_base_ver} $srcdir/BASE-VER"`
7330 echo "gcc_driver_version: ${gcc_driver_version}"
7331 cat > gcc-driver-name.h <<EOF
7332 #define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_driver_version}${exeext}"
7335 # Check whether --enable-default-pie was given.
7336 AC_ARG_ENABLE(default-pie,
7337 [AS_HELP_STRING([--enable-default-pie],
7338 [enable Position Independent Executable as default])],
7339 enable_default_pie=$enableval,
7340 enable_default_pie=no)
7341 if test x$enable_default_pie = xyes ; then
7342 AC_DEFINE(ENABLE_DEFAULT_PIE, 1,
7343 [Define if your target supports default PIE and it is enabled.])
7345 AC_SUBST([enable_default_pie])
7347 # Check if -fno-PIE works.
7348 AC_CACHE_CHECK([for -fno-PIE option],
7350 [saved_CXXFLAGS="$CXXFLAGS"
7351 CXXFLAGS="$CXXFLAGS -fno-PIE"
7352 AC_COMPILE_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
7353 [gcc_cv_c_no_fpie=yes],
7354 [gcc_cv_c_no_fpie=no])
7355 CXXFLAGS="$saved_CXXFLAGS"])
7356 if test "$gcc_cv_c_no_fpie" = "yes"; then
7357 NO_PIE_CFLAGS="-fno-PIE"
7359 AC_SUBST([NO_PIE_CFLAGS])
7361 # Check if -no-pie works.
7362 AC_CACHE_CHECK([for -no-pie option],
7364 [saved_LDFLAGS="$LDFLAGS"
7365 LDFLAGS="$LDFLAGS -no-pie"
7366 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
7367 [gcc_cv_no_pie=yes],
7369 LDFLAGS="$saved_LDFLAGS"])
7370 if test "$gcc_cv_no_pie" = "yes"; then
7371 NO_PIE_FLAG="-no-pie"
7373 AC_SUBST([NO_PIE_FLAG])
7375 # Enable Intel CET on Intel CET enabled host if jit is enabled.
7376 GCC_CET_HOST_FLAGS(CET_HOST_FLAGS)
7377 case x$enable_languages in
7384 AC_SUBST(CET_HOST_FLAGS)
7386 # Check linker supports '-z bndplt'
7387 ld_bndplt_support=no
7388 AC_MSG_CHECKING(linker -z bndplt option)
7389 if test x"$ld_is_gold" = xno; then
7390 if test $in_tree_ld = yes ; then
7391 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
7392 ld_bndplt_support=yes
7394 elif test x$gcc_cv_ld != x; then
7395 # Check if linker supports -a bndplt option
7396 if $gcc_cv_ld --help 2>&1 | grep -- '-z bndplt' > /dev/null; then
7397 ld_bndplt_support=yes
7401 if test x"$ld_bndplt_support" = xyes; then
7402 AC_DEFINE(HAVE_LD_BNDPLT_SUPPORT, 1,
7403 [Define if your linker supports -z bndplt])
7405 AC_MSG_RESULT($ld_bndplt_support)
7407 # Check linker supports '--push-state'/'--pop-state'
7408 ld_pushpopstate_support=no
7409 AC_MSG_CHECKING(linker --push-state/--pop-state options)
7410 if test x"$ld_is_gold" = xno; then
7411 if test $in_tree_ld = yes ; then
7412 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
7413 ld_pushpopstate_support=yes
7415 elif test x$gcc_cv_ld != x; then
7416 # Check if linker supports --push-state/--pop-state options
7417 if $gcc_cv_ld --help 2>&1 | grep -- '--push-state' > /dev/null; then
7418 ld_pushpopstate_support=yes
7422 if test x"$ld_pushpopstate_support" = xyes; then
7423 AC_DEFINE(HAVE_LD_PUSHPOPSTATE_SUPPORT, 1,
7424 [Define if your linker supports --push-state/--pop-state])
7426 AC_MSG_RESULT($ld_pushpopstate_support)
7428 # On s390, float_t has historically been statically defined as double for no
7429 # good reason. To comply with the C standard in the light of this definition,
7430 # gcc has evaluated float expressions in double precision when in
7431 # standards-compatible mode or when given -fexcess-precision=standard. To enable
7432 # a smooth transition towards the new model used by most architectures, where
7433 # gcc describes its behavior via the macro __FLT_EVAL_METHOD__ and glibc derives
7434 # float_t from that, this behavior can be configured with
7435 # --enable-s390-excess-float-precision. When given as enabled, that flag selects
7436 # the old model. When omitted, native builds and cross compiles that have target
7437 # libc headers will detect whether libc clamps float_t to double and in that
7438 # case maintain the old model. Otherwise, they will default to the new model.
7439 AC_ARG_ENABLE(s390-excess-float-precision,
7440 [AS_HELP_STRING([--enable-s390-excess-float-precision],
7441 [on s390 targets, evaluate float with double precision
7442 when in standards-conforming mode])],
7443 [],[enable_s390_excess_float_precision=auto])
7447 if test x"$enable_s390_excess_float_precision" = xauto; then
7448 # Can we autodetect the behavior of the target libc?
7449 if test "$target" = "$host" -a "$host" = "$build"; then
7450 enable_s390_excess_float_precision=autodetect
7451 elif test "x$with_headers" != xno; then
7452 # cross build. are target headers available?
7453 # carefully coerce the build-system compiler to use target headers
7454 saved_CXXFLAGS="$CXXFLAGS"
7455 CROSS_TEST_CXXFLAGS="-nostdinc ${XGCC_FLAGS_FOR_TARGET//-B/-idirafter/}"
7456 CXXFLAGS="$CROSS_TEST_CXXFLAGS"
7457 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
7459 ]])], [enable_s390_excess_float_precision=autodetect], [])
7460 CXXFLAGS="$saved_CXXFLAGS"
7463 if test x"$enable_s390_excess_float_precision" = xautodetect; then
7464 saved_CXXFLAGS="$CXXFLAGS"
7465 if ! test "$target" = "$host" -a "$host" = "$build"; then
7466 CXXFLAGS="$CROSS_TEST_CXXFLAGS"
7467 unset CROSS_TEST_CXXFLAGS
7469 AC_CACHE_CHECK([for glibc clamping float_t to double],
7470 gcc_cv_float_t_clamped_to_double, [
7471 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
7472 #define __FLT_EVAL_METHOD__ 0
7474 int dummy[sizeof(float_t) == sizeof(double) ? 1 : -1];
7476 [gcc_cv_float_t_clamped_to_double=yes],
7477 [gcc_cv_float_t_clamped_to_double=no])])
7478 CXXFLAGS="$saved_CXXFLAGS"
7479 enable_s390_excess_float_precision="$gcc_cv_float_t_clamped_to_double"
7481 # no way to detect behavior of target libc, default to new model
7482 enable_s390_excess_float_precision=no
7486 GCC_TARGET_TEMPLATE(ENABLE_S390_EXCESS_FLOAT_PRECISION)
7487 if test x"$enable_s390_excess_float_precision" = xyes; then
7488 AC_DEFINE(ENABLE_S390_EXCESS_FLOAT_PRECISION, 1,
7489 [Define to enable evaluating float expressions with double precision in
7490 standards-compatible mode on s390 targets.])
7495 # Configure the subdirectories
7496 # AC_CONFIG_SUBDIRS($subdirs)
7498 # Create the Makefile
7499 # and configure language subdirectories
7500 AC_CONFIG_FILES($all_outputs)
7502 AC_CONFIG_COMMANDS([default],
7504 case ${CONFIG_HEADERS} in
7505 *auto-host.h:config.in*)
7508 # Make sure all the subdirs exist.
7509 for d in $subdirs doc build common c-family
7511 test -d $d || mkdir $d
7514 [subdirs='$subdirs'])