2 # Process this file with autoconf to generate a configuration script.
4 # Copyright (C) 1997-2021 Free Software Foundation, Inc.
6 #This file is part of GCC.
8 #GCC is free software; you can redistribute it and/or modify it under
9 #the terms of the GNU General Public License as published by the Free
10 #Software Foundation; either version 3, or (at your option) any later
13 #GCC is distributed in the hope that it will be useful, but WITHOUT
14 #ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 #FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
18 #You should have received a copy of the GNU General Public License
19 #along with GCC; see the file COPYING3. If not see
20 #<http://www.gnu.org/licenses/>.
22 # --------------------------------
23 # Initialization and sanity checks
24 # --------------------------------
27 AC_CONFIG_SRCDIR(tree.c)
28 AC_CONFIG_HEADER(auto-host.h:config.in)
30 gcc_version=`cat $srcdir/BASE-VER`
32 # Determine the host, build, and target systems
37 # Determine the noncanonical host name, for Ada.
40 # Determine the noncanonical target name, for directory use.
41 ACX_NONCANONICAL_TARGET
43 # Used for constructing correct paths for offload compilers.
44 real_target_noncanonical=${target_noncanonical}
47 # Determine the target- and build-specific subdirectories
50 # Set program_transform_name
53 # Check for bogus environment variables.
54 # Test if LIBRARY_PATH contains the notation for the current directory
55 # since this would lead to problems installing/building glibc.
56 # LIBRARY_PATH contains the current directory if one of the following
58 # - one of the terminals (":" and ";") is the first or last sign
59 # - two terminals occur directly after each other
60 # - the path contains an element with a dot in it
61 AC_MSG_CHECKING(LIBRARY_PATH variable)
63 case ${LIBRARY_PATH} in
64 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
65 library_path_setting="contains current directory"
68 library_path_setting="ok"
72 AC_MSG_RESULT($library_path_setting)
73 if test "$library_path_setting" != "ok"; then
75 *** LIBRARY_PATH shouldn't contain the current directory when
76 *** building gcc. Please change the environment variable
77 *** and run configure again.])
80 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
81 # since this would lead to problems installing/building glibc.
82 # GCC_EXEC_PREFIX contains the current directory if one of the following
84 # - one of the terminals (":" and ";") is the first or last sign
85 # - two terminals occur directly after each other
86 # - the path contains an element with a dot in it
87 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
89 case ${GCC_EXEC_PREFIX} in
90 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
91 gcc_exec_prefix_setting="contains current directory"
94 gcc_exec_prefix_setting="ok"
98 AC_MSG_RESULT($gcc_exec_prefix_setting)
99 if test "$gcc_exec_prefix_setting" != "ok"; then
101 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
102 *** building gcc. Please change the environment variable
103 *** and run configure again.])
110 # Specify the local prefix
112 AC_ARG_WITH(local-prefix,
113 [AS_HELP_STRING([--with-local-prefix=DIR],
114 [specifies directory to put local include])],
115 [case "${withval}" in
116 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
118 *) local_prefix=$with_local_prefix ;;
121 # Default local prefix if it is empty
122 if test x$local_prefix = x; then
123 local_prefix=/usr/local
126 AC_ARG_WITH([native-system-header-dir],
127 [ --with-native-system-header-dir=dir
128 use dir as the directory to look for standard
129 system header files in. Defaults to /usr/include.],
131 case ${with_native_system_header_dir} in
132 yes|no) AC_MSG_ERROR([bad value ${withval} given for --with-native-system-header-dir]) ;;
133 /* | [[A-Za-z]]:[[\\/]]*) ;;
134 *) AC_MSG_ERROR([--with-native-system-header-dir argument ${withval} must be an absolute directory]) ;;
136 configured_native_system_header_dir="${withval}"
137 ], [configured_native_system_header_dir=])
139 AC_ARG_WITH(build-sysroot,
140 [AS_HELP_STRING([--with-build-sysroot=sysroot],
141 [use sysroot as the system root during the build])],
142 [if test x"$withval" != x ; then
143 SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
145 [SYSROOT_CFLAGS_FOR_TARGET=])
146 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
148 if test "x$prefix" = xNONE; then
149 test_prefix=/usr/local
153 if test "x$exec_prefix" = xNONE; then
154 test_exec_prefix=$test_prefix
156 test_exec_prefix=$exec_prefix
160 [AS_HELP_STRING([[--with-sysroot[=DIR]]],
161 [search for usr/lib, usr/include, et al, within DIR])],
163 case ${with_sysroot} in
165 */) with_sysroot=`echo $with_sysroot | sed 's,/$,,'` ;;
167 case ${with_sysroot} in
168 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
169 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
172 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
173 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
175 case ${TARGET_SYSTEM_ROOT} in
176 "${test_prefix}"|"${test_prefix}/"*|\
177 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
178 '${prefix}'|'${prefix}/'*|\
179 '${exec_prefix}'|'${exec_prefix}/'*)
180 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
181 TARGET_SYSTEM_ROOT_DEFINE="$t"
186 TARGET_SYSTEM_ROOT_DEFINE=
187 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
189 AC_SUBST(TARGET_SYSTEM_ROOT)
190 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
191 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
193 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
194 # passed in by the toplevel make and thus we'd get different behavior
195 # depending on where we built the sources.
197 # Specify the g++ header file directory
198 AC_ARG_WITH(gxx-include-dir,
199 [AS_HELP_STRING([--with-gxx-include-dir=DIR],
200 [specifies directory to put g++ header files])],
201 [case "${withval}" in
202 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
204 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
207 # If both --with-sysroot and --with-gxx-include-dir are passed, we interpolate
208 # the former in the latter and, upon success, compute gcc_gxx_include_dir as
209 # relative to the sysroot.
210 gcc_gxx_include_dir_add_sysroot=0
212 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
213 if test x${gcc_gxx_include_dir} = x; then
214 if test x${enable_version_specific_runtime_libs} = xyes; then
215 gcc_gxx_include_dir='${libsubdir}/include/c++'
217 libstdcxx_incdir='include/c++/$(version)'
218 if test x$host != x$target; then
219 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
221 gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir"
223 elif test "${with_sysroot+set}" = set; then
224 gcc_gxx_without_sysroot=`expr "${gcc_gxx_include_dir}" : "${with_sysroot}"'\(.*\)'`
225 if test "${gcc_gxx_without_sysroot}"; then
226 gcc_gxx_include_dir="${gcc_gxx_without_sysroot}"
227 gcc_gxx_include_dir_add_sysroot=1
231 # Configuration for an alternate set of C++ headers.
232 gcc_gxx_libcxx_include_dir=
233 # Specify the alternate g++ header file directory
234 AC_ARG_WITH(gxx-libcxx-include-dir,
235 [AS_HELP_STRING([--with-gxx-libcxx-include-dir=DIR],
236 [specifies directory to find libc++ header files])],
237 [case "${withval}" in
238 yes) AC_MSG_ERROR(bad value ${withval} given for libc++ include directory) ;;
240 *) gcc_gxx_libcxx_include_dir=$with_gxx_libcxx_include_dir ;;
243 # If both --with-sysroot and --with-gxx-libcxx-include-dir are passed, we
244 # check to see if the latter starts with the former and, upon success, compute
245 # gcc_gxx_libcxx_include_dir as relative to the sysroot.
246 gcc_gxx_libcxx_include_dir_add_sysroot=0
248 if test x${gcc_gxx_libcxx_include_dir} != x; then
249 AC_DEFINE(ENABLE_STDLIB_OPTION, 1,
250 [Define if the -stdlib= option should be enabled.])
252 AC_DEFINE(ENABLE_STDLIB_OPTION, 0)
254 # ??? This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
255 if test x${gcc_gxx_libcxx_include_dir} = x; then
256 if test x${enable_version_specific_runtime_libs} = xyes; then
257 gcc_gxx_libcxx_include_dir='${libsubdir}/libc++_include/c++/v1'
259 libcxx_incdir='libc++_include/c++/$(version)/v1'
260 if test x$host != x$target; then
261 libcxx_incdir="$target_alias/$libcxx_incdir"
263 gcc_gxx_libcxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libcxx_incdir"
265 elif test "${with_sysroot+set}" = set; then
266 gcc_gxx_libcxx_without_sysroot=`expr "${gcc_gxx_libcxx_include_dir}" : "${with_sysroot}"'\(.*\)'`
267 if test "${gcc_gxx_libcxx_without_sysroot}"; then
268 gcc_gxx_libcxx_include_dir="${gcc_gxx_libcxx_without_sysroot}"
269 gcc_gxx_libcxx_include_dir_add_sysroot=1
273 AC_ARG_WITH(cpp_install_dir,
274 [AC_HELP_STRING([--with-cpp-install-dir=DIR],
275 [install the user visible C preprocessor in DIR
276 (relative to PREFIX) as well as PREFIX/bin])],
277 [if test x$withval = xyes; then
278 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
279 elif test x$withval != xno; then
280 cpp_install_dir=$withval
283 # We would like to our source tree to be readonly. However when releases or
284 # pre-releases are generated, the flex/bison generated files as well as the
285 # various formats of manuals need to be included along with the rest of the
286 # sources. Therefore we have --enable-generated-files-in-srcdir to do
289 AC_MSG_CHECKING([whether to place generated files in the source directory])
290 dnl generated-files-in-srcdir is disabled by default
291 AC_ARG_ENABLE(generated-files-in-srcdir,
292 [AS_HELP_STRING([--enable-generated-files-in-srcdir],
293 [put copies of generated files in source dir
294 intended for creating source tarballs for users
295 without texinfo bison or flex])],
296 generated_files_in_srcdir=$enableval,
297 generated_files_in_srcdir=no)
299 AC_MSG_RESULT($generated_files_in_srcdir)
301 if test "$generated_files_in_srcdir" = "yes"; then
308 # -------------------
309 # Find default linker
310 # -------------------
314 [AS_HELP_STRING([--with-gnu-ld], [arrange to work with GNU ld])],
315 gnu_ld_flag="$with_gnu_ld",
319 *darwin*) ld64_flag=yes;; # Darwin can only use a ld64-compatible linker.
323 # With pre-defined ld
325 [AS_HELP_STRING([--with-ld], [arrange to use the specified ld (full pathname)])],
326 DEFAULT_LINKER="$with_ld")
327 if test x"${DEFAULT_LINKER+set}" = x"set"; then
328 if test ! -x "$DEFAULT_LINKER"; then
329 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
330 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
332 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep ld64- > /dev/null; then
335 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
336 [Define to enable the use of a default linker.])
339 AC_MSG_CHECKING([whether a default linker was specified])
340 if test x"${DEFAULT_LINKER+set}" = x"set"; then
341 if test x"$gnu_ld_flag" = x"no"; then
342 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
344 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
350 # With demangler in GNU ld
351 AC_ARG_WITH(demangler-in-ld,
352 [AS_HELP_STRING([--with-demangler-in-ld], [try to use demangler in GNU ld])],
353 demangler_in_ld="$with_demangler_in_ld",
356 # ----------------------
357 # Find default assembler
358 # ----------------------
362 [AS_HELP_STRING([--with-gnu-as], [arrange to work with GNU as])],
363 gas_flag="$with_gnu_as",
367 [AS_HELP_STRING([--with-as], [arrange to use the specified as (full pathname)])],
368 DEFAULT_ASSEMBLER="$with_as")
369 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
370 if test ! -x "$DEFAULT_ASSEMBLER"; then
371 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
372 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
375 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
376 [Define to enable the use of a default assembler.])
379 AC_MSG_CHECKING([whether a default assembler was specified])
380 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
381 if test x"$gas_flag" = x"no"; then
382 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
384 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
394 # If a non-executable a.out is present (e.g. created by GNU as above even if
395 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
396 # file, even when creating an executable, so an execution test fails.
397 # Remove possible default executable files to avoid this.
399 # FIXME: This really belongs into AC_PROG_CC and can be removed once
400 # Autoconf includes it.
401 rm -f a.out a.exe b.out
403 # Find the native compiler
406 ACX_PROG_GNAT([-I"$srcdir"/ada/libgnat])
408 # Do configure tests with the C++ compiler, since that's what we build with.
411 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
412 # optimizations to be activated explicitly by the toplevel.
415 *) CFLAGS=`echo "$CFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" `
416 CXXFLAGS=`echo "$CXXFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" ` ;;
421 # Determine PICFLAG for target gnatlib.
422 GCC_PICFLAG_FOR_TARGET
423 AC_SUBST(PICFLAG_FOR_TARGET)
425 # -------------------------
426 # Check C compiler features
427 # -------------------------
429 AC_USE_SYSTEM_EXTENSIONS
436 # sizeof(char) is 1 by definition.
437 AC_CHECK_SIZEOF(void *)
438 AC_CHECK_SIZEOF(short)
440 AC_CHECK_SIZEOF(long)
441 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
443 if test x"$ac_cv_c_uint64_t" = x"no" -o x"$ac_cv_c_int64_t" = x"no"; then
444 AC_MSG_ERROR([uint64_t or int64_t not found])
447 # check what underlying integer type int64_t uses
448 AC_CACHE_CHECK(for int64_t underlying type, ac_cv_int64_t_type, [
449 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
453 template <typename T> struct X { };
455 struct X<long> { typedef long t; };
456 ]], [[X<int64_t>::t x;]])],[ac_cv_int64_t_type=long],[ac_cv_int64_t_type="long long"])])
457 if test "$ac_cv_int64_t_type" = "long"; then
458 AC_DEFINE(INT64_T_IS_LONG, 1,
459 [Define if int64_t uses long as underlying type.])
461 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
465 template <typename T> struct X { };
467 struct X<long long> { typedef long long t; };
468 ]], [[X<int64_t>::t x;]])],[],[AC_MSG_ERROR([error verifying int64_t uses long long])])
471 AC_CACHE_CHECK(for std::swap in <utility>, ac_cv_std_swap_in_utility, [
472 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
474 ]], [[int a, b; std::swap(a,b);]])],[ac_cv_std_swap_in_utility=yes],[ac_cv_std_swap_in_utility=no])])
475 if test $ac_cv_std_swap_in_utility = yes; then
476 AC_DEFINE(HAVE_SWAP_IN_UTILITY, 1,
477 [Define if <utility> defines std::swap.])
480 # Check whether compiler is affected by placement new aliasing bug (PR 29286).
481 # If the host compiler is affected by the bug, and we build with optimization
482 # enabled (which happens e.g. when cross-compiling), the pool allocator may
483 # get miscompiled. Use -fno-strict-aliasing to work around this problem.
484 # Since there is no reliable feature check for the presence of this bug,
485 # we simply use a GCC version number check. (This should never trigger for
486 # stages 2 or 3 of a native bootstrap.)
488 if test "$GCC" = yes; then
489 saved_CXXFLAGS="$CXXFLAGS"
491 # The following test compilation will succeed if and only if $CXX accepts
492 # -fno-strict-aliasing *and* is older than GCC 4.3.
493 CXXFLAGS="$CXXFLAGS -fno-strict-aliasing"
494 AC_MSG_CHECKING([whether $CXX is affected by placement new aliasing bug])
495 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
496 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)
497 #error compiler not affected by placement new aliasing bug
500 [AC_MSG_RESULT([yes]); aliasing_flags='-fno-strict-aliasing'],
501 [AC_MSG_RESULT([no])])
503 CXXFLAGS="$saved_CXXFLAGS"
505 AC_SUBST(aliasing_flags)
509 # ---------------------
510 # Warnings and checking
511 # ---------------------
513 # Check $CC warning features (if it's GCC).
514 # We want to use -pedantic, but we don't want warnings about
518 # * C++11 narrowing conversions in { }
519 # So, we only use -pedantic if we can disable those warnings.
521 # In stage 1, disable -Wformat warnings from old GCCs about new % codes
522 AC_ARG_ENABLE(build-format-warnings,
523 AS_HELP_STRING([--disable-build-format-warnings],[don't use -Wformat while building GCC]),
524 [],[enable_build_format_warnings=yes])
525 AS_IF([test $enable_build_format_warnings = no],
526 [wf_opt=-Wno-format],[wf_opt=])
527 ACX_PROG_CXX_WARNING_OPTS(
528 m4_quote(m4_do([-W -Wall -Wno-narrowing -Wwrite-strings ],
529 [-Wcast-qual -Wno-error=format-diag $wf_opt])),
531 ACX_PROG_CC_WARNING_OPTS(
532 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes ],
533 [-Wno-error=format-diag])), [c_loose_warn])
534 ACX_PROG_CXX_WARNING_OPTS(
535 m4_quote(m4_do([-Wmissing-format-attribute ],
536 [-Woverloaded-virtual])), [strict_warn])
537 ACX_PROG_CC_WARNING_OPTS(
538 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
539 ACX_PROG_CXX_WARNING_ALMOST_PEDANTIC(
540 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
541 [-Wno-overlength-strings])), [strict_warn])
542 ACX_PROG_CXX_WARNINGS_ARE_ERRORS([manual], [strict_warn])
544 # The above macros do nothing if the compiler is not GCC. However, the
545 # Makefile has more goo to add other flags, so these variables are used
546 # to enable warnings only for GCC.
549 if test "x$GCC" = "xyes"; then
550 warn_cflags='$(GCC_WARN_CFLAGS)'
551 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
553 AC_SUBST(warn_cflags)
554 AC_SUBST(warn_cxxflags)
556 # Disable exceptions and RTTI if building with g++
557 ACX_PROG_CC_WARNING_OPTS(
558 m4_quote(m4_do([-fno-exceptions -fno-rtti -fasynchronous-unwind-tables])),
561 # Enable expensive internal checks
563 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
567 AC_ARG_ENABLE(checking,
568 [AS_HELP_STRING([[--enable-checking[=LIST]]],
569 [enable expensive run-time checks. With LIST,
570 enable only specific categories of checks.
571 Categories are: yes,no,all,none,release.
572 Flags are: assert,df,extra,fold,gc,gcac,gimple,misc,
573 rtlflag,rtl,runtime,tree,valgrind,types])],
574 [ac_checking_flags="${enableval}"],[
575 # Determine the default checks.
576 if test x$is_release = x ; then
577 ac_checking_flags=yes,extra
579 ac_checking_flags=release
581 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
582 for check in release $ac_checking_flags
585 # these set all the flags to specific states
586 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
587 ac_fold_checking= ; ac_gc_checking=1 ; ac_extra_checking= ;
588 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
589 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
590 ac_tree_checking=1 ; ac_valgrind_checking= ;
591 ac_types_checking=1 ;;
592 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
593 ac_fold_checking= ; ac_gc_checking= ; ac_extra_checking= ;
594 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
595 ac_rtlflag_checking= ; ac_runtime_checking= ;
596 ac_tree_checking= ; ac_valgrind_checking= ;
597 ac_types_checking= ;;
598 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
599 ac_fold_checking=1 ; ac_gc_checking=1 ; ac_extra_checking=1 ;
600 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
601 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
602 ac_tree_checking=1 ; ac_valgrind_checking= ;
603 ac_types_checking=1 ;;
604 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
605 ac_fold_checking= ; ac_gc_checking= ; ac_extra_checking= ;
606 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
607 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
608 ac_tree_checking= ; ac_valgrind_checking= ;
609 ac_types_checking= ;;
610 # these enable particular checks
611 assert) ac_assert_checking=1 ;;
612 df) ac_df_checking=1 ;;
613 extra) ac_extra_checking=1 ;;
614 fold) ac_fold_checking=1 ;;
615 gc) ac_gc_checking=1 ;;
616 gcac) ac_gc_always_collect=1 ;;
617 gimple) ac_gimple_checking=1 ;;
618 misc) ac_checking=1 ;;
619 rtl) ac_rtl_checking=1 ;;
620 rtlflag) ac_rtlflag_checking=1 ;;
621 runtime) ac_runtime_checking=1 ;;
622 tree) ac_tree_checking=1 ;;
623 types) ac_types_checking=1 ;;
624 valgrind) ac_valgrind_checking=1 ;;
625 *) AC_MSG_ERROR(unknown check category $check) ;;
631 if test x$ac_checking != x ; then
632 AC_DEFINE(CHECKING_P, 1,
633 [Define to 0/1 if you want more run-time sanity checks. This one gets a grab
634 bag of miscellaneous but relatively cheap checks.])
635 nocommon_flag=-fno-common
637 AC_DEFINE(CHECKING_P, 0)
639 AC_SUBST(nocommon_flag)
640 if test x$ac_extra_checking != x ; then
641 AC_DEFINE(ENABLE_EXTRA_CHECKING, 1,
642 [Define to 0/1 if you want extra run-time checking that might affect code
645 AC_DEFINE(ENABLE_EXTRA_CHECKING, 0)
647 if test x$ac_df_checking != x ; then
648 AC_DEFINE(ENABLE_DF_CHECKING, 1,
649 [Define if you want more run-time sanity checks for dataflow.])
651 if test x$ac_assert_checking != x ; then
652 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
653 [Define if you want assertions enabled. This is a cheap check.])
655 if test x$ac_gimple_checking != x ; then
656 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
657 [Define if you want operations on GIMPLE (the basic data structure of
658 the high-level optimizers) to be checked for dynamic type safety at
659 runtime. This is moderately expensive.])
661 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
662 if test x$ac_runtime_checking != x ; then
663 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
664 [Define if you want runtime assertions enabled. This is a cheap check.])
666 if test x$ac_tree_checking != x ; then
667 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
668 [Define if you want all operations on trees (the basic data
669 structure of the front ends) to be checked for dynamic type safety
670 at runtime. This is moderately expensive.
674 if test x$ac_types_checking != x ; then
675 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
676 [Define if you want all gimple types to be verified after gimplifiation.
680 AC_SUBST(TREECHECKING)
681 if test x$ac_rtl_checking != x ; then
682 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
683 [Define if you want all operations on RTL (the basic data structure
684 of the optimizer and back end) to be checked for dynamic type safety
685 at runtime. This is quite expensive.])
687 if test x$ac_rtlflag_checking != x ; then
688 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
689 [Define if you want RTL flag accesses to be checked against the RTL
690 codes that are supported for each access macro. This is relatively
693 if test x$ac_gc_checking != x ; then
694 AC_DEFINE(ENABLE_GC_CHECKING, 1,
695 [Define if you want the garbage collector to do object poisoning and
696 other memory allocation checks. This is quite expensive.])
698 if test x$ac_gc_always_collect != x ; then
699 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
700 [Define if you want the garbage collector to operate in maximally
701 paranoid mode, validating the entire heap and collecting garbage at
702 every opportunity. This is extremely expensive.])
704 if test x$ac_fold_checking != x ; then
705 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
706 [Define if you want fold checked that it never destructs its argument.
707 This is quite expensive.])
709 valgrind_path_defines=
712 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
713 dnl # an if statement. This was the source of very frustrating bugs
714 dnl # in converting to autoconf 2.5x!
715 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
717 # It is certainly possible that there's valgrind but no valgrind.h.
718 # GCC relies on making annotations so we must have both.
719 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
720 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
721 [[#include <valgrind/memcheck.h>
722 #ifndef VALGRIND_DISCARD
723 #error VALGRIND_DISCARD not defined
725 [gcc_cv_header_valgrind_memcheck_h=yes],
726 [gcc_cv_header_valgrind_memcheck_h=no])
727 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
728 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
729 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
730 [[#include <memcheck.h>
731 #ifndef VALGRIND_DISCARD
732 #error VALGRIND_DISCARD not defined
734 [gcc_cv_header_memcheck_h=yes],
735 [gcc_cv_header_memcheck_h=no])
736 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
737 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
738 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
739 [Define if valgrind's valgrind/memcheck.h header is installed.])
741 if test $gcc_cv_header_memcheck_h = yes; then
742 AC_DEFINE(HAVE_MEMCHECK_H, 1,
743 [Define if valgrind's memcheck.h header is installed.])
746 if test x$ac_valgrind_checking != x ; then
747 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
748 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
749 if test "x$valgrind_path" = "x" \
750 || (test $have_valgrind_h = no \
751 && test $gcc_cv_header_memcheck_h = no \
752 && test $gcc_cv_header_valgrind_memcheck_h = no); then
753 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
755 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
756 valgrind_command="$valgrind_path -q"
757 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
758 [Define if you want to run subprograms and generated programs
759 through valgrind (a memory checker). This is extremely expensive.])
761 AC_SUBST(valgrind_path_defines)
762 AC_SUBST(valgrind_command)
764 # Enable code coverage collection
765 AC_ARG_ENABLE(coverage,
766 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
767 [enable compiler's code coverage collection.
768 Use to measure compiler performance and locate
769 unused parts of the compiler. With LEVEL, specify
770 optimization. Values are opt, noopt,
772 [case "${enableval}" in
774 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0 -fkeep-static-functions"
777 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2 -fkeep-static-functions"
780 # a.k.a. --disable-coverage
784 AC_MSG_ERROR(unknown coverage setting $enableval)
788 AC_SUBST(coverage_flags)
790 AC_ARG_ENABLE(gather-detailed-mem-stats,
791 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
792 [enable detailed memory allocation stats gathering])], [],
793 [enable_gather_detailed_mem_stats=no])
794 gather_stats=`if test $enable_gather_detailed_mem_stats != no; then echo 1; else echo 0; fi`
795 AC_DEFINE_UNQUOTED(GATHER_STATISTICS, $gather_stats,
796 [Define to enable detailed memory allocation stats gathering.])
798 AC_ARG_ENABLE(valgrind-annotations,
799 [AS_HELP_STRING([--enable-valgrind-annotations],
800 [enable valgrind runtime interaction])], [],
801 [enable_valgrind_annotations=no])
802 if test x$enable_valgrind_annotations != xno \
803 || test x$ac_valgrind_checking != x; then
804 if (test $have_valgrind_h = no \
805 && test $gcc_cv_header_memcheck_h = no \
806 && test $gcc_cv_header_valgrind_memcheck_h = no); then
807 AC_MSG_ERROR([*** Can't find valgrind/memcheck.h, memcheck.h or valgrind.h])
809 AC_DEFINE(ENABLE_VALGRIND_ANNOTATIONS, 1,
810 [Define to get calls to the valgrind runtime enabled.])
813 # -------------------------------
814 # Miscenalleous configure options
815 # -------------------------------
819 [AS_HELP_STRING([--with-stabs],
820 [arrange to use stabs instead of host debug format])],
824 # Determine whether or not multilibs are enabled.
825 AC_ARG_ENABLE(multilib,
826 [AS_HELP_STRING([--enable-multilib],
827 [enable library support for multiple ABIs])],
828 [], [enable_multilib=yes])
829 AC_SUBST(enable_multilib)
831 # Determine whether or not multiarch is enabled.
832 AC_ARG_ENABLE(multiarch,
833 [AS_HELP_STRING([--enable-multiarch],
834 [enable support for multiarch paths])],
835 [case "${enableval}" in
836 yes|no|auto) enable_multiarch=$enableval;;
837 *) AC_MSG_ERROR(bad value ${enableval} given for --enable-multiarch option) ;;
838 esac], [enable_multiarch=auto])
839 if test x${enable_multiarch} = xauto; then
840 if test x${with_native_system_header_dir} != x; then
841 ma_msg_suffix=", disabled auto check (configured with --native-system-header-dir)"
844 if test x$host != x$target && test "x$with_sysroot" = x; then
845 ma_msg_suffix=", disabled auto check (cross build configured without --with-sysroot)"
849 AC_MSG_CHECKING(for multiarch configuration)
850 AC_SUBST(enable_multiarch)
851 AC_MSG_RESULT($enable_multiarch$ma_msg_suffix)
853 # needed for setting the multiarch name for soft-float/hard-float ABIs
857 # default stack clash protection guard size as power of twos in bytes.
858 # Please keep these in sync with params.def.
862 # Keep the default value when the option is not used to 0, this allows us to
863 # distinguish between the cases where the user specifially set a value via
864 # configure and when the normal default value is used.
865 AC_ARG_WITH(stack-clash-protection-guard-size,
866 [AS_HELP_STRING([--with-stack-clash-protection-guard-size=size],
867 [Set the default stack clash protection guard size for specific targets as a power of two in bytes.])],
868 [DEFAULT_STK_CLASH_GUARD_SIZE="$with_stack_clash_protection_guard_size"], [DEFAULT_STK_CLASH_GUARD_SIZE=0])
869 if test $DEFAULT_STK_CLASH_GUARD_SIZE -ne 0 \
870 && (test $DEFAULT_STK_CLASH_GUARD_SIZE -lt $stk_clash_min \
871 || test $DEFAULT_STK_CLASH_GUARD_SIZE -gt $stk_clash_max); then
872 AC_MSG_ERROR(m4_normalize([
873 Invalid value $DEFAULT_STK_CLASH_GUARD_SIZE for --with-stack-clash-protection-guard-size. \
874 Must be between $stk_clash_min and $stk_clash_max.]))
877 AC_DEFINE_UNQUOTED(DEFAULT_STK_CLASH_GUARD_SIZE, $DEFAULT_STK_CLASH_GUARD_SIZE,
878 [Define to larger than zero set the default stack clash protector size.])
880 # Enable __cxa_atexit for C++.
881 AC_ARG_ENABLE(__cxa_atexit,
882 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
885 # Enable C extension for decimal float if target supports it.
886 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
888 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
889 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
890 [Define to 1 to enable decimal float extension to C.])
892 # Use default_decimal_float for dependency.
893 enable_decimal_float=$default_decimal_float
895 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
896 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
897 [Define to 1 to specify that we are using the BID decimal floating
898 point format instead of DPD])
900 # Enable C extension for fixed-point arithmetic.
901 AC_ARG_ENABLE(fixed-point,
902 [AS_HELP_STRING([--enable-fixed-point],
903 [enable fixed-point arithmetic extension to C])],
908 enable_fixed_point=yes
912 enable_fixed_point=yes
915 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
916 enable_fixed_point=no
920 AC_SUBST(enable_fixed_point)
922 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
923 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
924 [Define to 1 to enable fixed-point arithmetic extension to C.])
927 # Pass with no value to take the default
928 # Pass with a value to specify a thread package
929 AC_ARG_ENABLE(threads,
930 [AS_HELP_STRING([[--enable-threads[=LIB]]],
931 [enable thread usage for target GCC,
932 using LIB thread package])],,
936 [AS_HELP_STRING([--enable-tls],
937 [enable or disable generation of tls code
938 overriding the assembler check for tls support])],
942 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
943 Valid choices are 'yes' and 'no'.]) ;;
947 AC_ARG_ENABLE(vtable-verify,
948 [AS_HELP_STRING([--enable-vtable-verify],
949 [enable vtable verification feature])],,
950 [enable_vtable_verify=no])
951 vtable_verify=`if test x$enable_vtable_verify = xyes; then echo 1; else echo 0; fi`
952 AC_DEFINE_UNQUOTED(ENABLE_VTABLE_VERIFY, $vtable_verify,
953 [Define 0/1 if vtable verification feature is enabled.])
955 AC_ARG_ENABLE(analyzer,
956 [AS_HELP_STRING([--disable-analyzer],
957 [disable -fanalyzer static analyzer])],
958 if test x$enable_analyzer = xno; then
964 AC_DEFINE_UNQUOTED(ENABLE_ANALYZER, $analyzer,
965 [Define 0/1 if static analyzer feature is enabled.])
967 AC_ARG_ENABLE(objc-gc,
968 [AS_HELP_STRING([--enable-objc-gc],
969 [enable the use of Boehm's garbage collector with
970 the GNU Objective-C runtime])],
971 if test x$enable_objc_gc = xno; then
979 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
980 dwarf2="$with_dwarf2",
983 AC_ARG_ENABLE(shared,
984 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
986 case $enable_shared in
990 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
991 for pkg in $enableval; do
992 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
999 ], [enable_shared=yes])
1000 AC_SUBST(enable_shared)
1003 [ --disable-gcov don't provide libgcov and related host tools],
1004 [], [enable_gcov=yes])
1005 AC_SUBST(enable_gcov)
1008 [AS_HELP_STRING([--with-specs=SPECS],
1009 [add SPECS to driver command-line processing])],
1010 [CONFIGURE_SPECS=$withval],
1013 AC_SUBST(CONFIGURE_SPECS)
1015 ACX_PKGVERSION([GCC])
1016 ACX_BUGURL([https://gcc.gnu.org/bugs/])
1018 # Allow overriding the default URL for documentation
1019 AC_ARG_WITH(documentation-root-url,
1020 AS_HELP_STRING([--with-documentation-root-url=URL],
1021 [Root for documentation URLs]),
1023 yes) AC_MSG_ERROR([documentation root URL not specified]) ;;
1024 no) AC_MSG_ERROR([documentation root URL not specified]) ;;
1025 */) DOCUMENTATION_ROOT_URL="$withval" ;;
1026 *) AC_MSG_ERROR([documentation root URL does not end with /]) ;;
1028 DOCUMENTATION_ROOT_URL="https://gcc.gnu.org/onlinedocs/"
1030 AC_DEFINE_UNQUOTED(DOCUMENTATION_ROOT_URL,"$DOCUMENTATION_ROOT_URL",
1031 [Define to the root for documentation URLs.])
1033 # Allow overriding the default URL for GCC changes
1034 AC_ARG_WITH(changes-root-url,
1035 AS_HELP_STRING([--with-changes-root-url=URL],
1036 [Root for GCC changes URLs]),
1038 yes) AC_MSG_ERROR([changes root URL not specified]) ;;
1039 no) AC_MSG_ERROR([changes root URL not specified]) ;;
1040 */) CHANGES_ROOT_URL="$withval" ;;
1041 *) AC_MSG_ERROR([changes root URL does not end with /]) ;;
1043 CHANGES_ROOT_URL="https://gcc.gnu.org/"
1045 AC_DEFINE_UNQUOTED(CHANGES_ROOT_URL,"$CHANGES_ROOT_URL",
1046 [Define to the root for URLs about GCC changes.])
1048 # Sanity check enable_languages in case someone does not run the toplevel
1049 # configure # script.
1050 AC_ARG_ENABLE(languages,
1051 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
1052 [case ,${enable_languages}, in
1054 # go safe -- we cannot be much sure without the toplevel
1056 # analysis of which target libs are present and usable
1060 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
1065 enable_languages=c,${enable_languages}
1068 [enable_languages=c])
1070 # If top-level libada has been disabled, then wire in install-gnatlib
1071 # invocation with `make install', so that one can build and install
1072 # the library manually with `make -C gcc all gnatlib gnattools install'.
1073 if test x"$enable_libada" = xno; then
1074 gnat_install_lib=gnat-install-lib
1078 AC_SUBST(gnat_install_lib)
1080 if test x"$enable_as_accelerator_for" != x; then
1081 AC_DEFINE(ACCEL_COMPILER, 1,
1082 [Define if this compiler should be built as the offload target compiler.])
1083 enable_as_accelerator=yes
1086 # In this case we expect offload compiler to be built as native, so we
1087 # need to rename the driver to avoid clashes with host's drivers.
1088 program_transform_name="s&^&${target}-&" ;;
1090 sedscript="s#${target_noncanonical}#${enable_as_accelerator_for}-accel-${target_noncanonical}#"
1091 program_transform_name=`echo $program_transform_name | sed $sedscript`
1092 accel_dir_suffix=/accel/${target_noncanonical}
1093 real_target_noncanonical=${enable_as_accelerator_for}
1095 AC_SUBST(enable_as_accelerator)
1096 AC_SUBST(real_target_noncanonical)
1097 AC_SUBST(accel_dir_suffix)
1099 for tgt in `echo $enable_offload_targets | sed 's/,/ /g'`; do
1100 tgt=`echo $tgt | sed 's/=.*//'`
1104 *-intelmic-* | *-intelmicemul-*)
1105 omp_device_property=omp-device-properties-i386
1106 omp_device_property_tmake_file="${omp_device_property_tmake_file} \$(srcdir)/config/i386/t-omp-device"
1109 omp_device_property=omp-device-properties-gcn
1110 omp_device_property_tmake_file="${omp_device_property_tmake_file} \$(srcdir)/config/gcn/t-omp-device"
1113 omp_device_property=omp-device-properties-nvptx
1114 omp_device_property_tmake_file="${omp_device_property_tmake_file} \$(srcdir)/config/nvptx/t-omp-device"
1117 AC_MSG_ERROR([unknown offload target specified])
1120 omp_device_properties="${omp_device_properties} ${tgt}=${omp_device_property}"
1121 omp_device_property_deps="${omp_device_property_deps} ${omp_device_property}"
1123 if test x"$offload_targets" = x; then
1124 offload_targets=$tgt
1126 offload_targets="$offload_targets,$tgt"
1129 AC_SUBST(omp_device_properties)
1130 AC_SUBST(omp_device_property_deps)
1132 AC_DEFINE_UNQUOTED(OFFLOAD_TARGETS, "$offload_targets",
1133 [Define to offload targets, separated by commas.])
1134 if test x"$enable_offloading" != x; then
1135 AC_DEFINE(ENABLE_OFFLOADING, 1,
1136 [Define this to enable support for offloading.])
1138 AC_DEFINE(ENABLE_OFFLOADING, 0,
1139 [Define this to enable support for offloading.])
1142 if test "x$enable_offload_defaulted" = xyes; then
1143 AC_DEFINE(OFFLOAD_DEFAULTED, 1,
1144 [Define to 1 to if -foffload is defaulted])
1147 AC_ARG_WITH(multilib-list,
1148 [AS_HELP_STRING([--with-multilib-list], [select multilibs (AArch64, SH and x86-64 only)])],
1150 with_multilib_list=default)
1152 AC_ARG_WITH(multilib-generator,
1153 [AS_HELP_STRING([--with-multilib-generator], [Multi-libs configuration string (RISC-V only)])],
1155 with_multilib_generator=default)
1157 # -------------------------
1158 # Checks for other programs
1159 # -------------------------
1163 # Find some useful tools
1165 # We need awk to create options.c and options.h.
1166 # Bail out if it's missing.
1168 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
1175 AC_SUBST(ranlib_flags)
1179 # See if cmp has --ignore-initial.
1180 gcc_AC_PROG_CMP_IGNORE_INITIAL
1182 # See if we have the mktemp command.
1183 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
1185 # See if makeinfo has been installed and is modern enough
1186 # that we can use it.
1187 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
1188 [GNU texinfo.* \([0-9][0-9.]*\)],
1189 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
1190 if test $gcc_cv_prog_makeinfo_modern = no; then
1192 *** Makeinfo is missing or too old.
1193 *** Info documentation will not be built.])
1198 AC_SUBST(BUILD_INFO)
1200 # Is pod2man recent enough to regenerate manpages?
1201 AC_MSG_CHECKING([for recent Pod::Man])
1202 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
1204 GENERATED_MANPAGES=generated-manpages
1209 AC_SUBST(GENERATED_MANPAGES)
1211 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
1214 dnl Don't use AC_PROG_LEX; we insist on flex.
1215 dnl LEXLIB is not useful in gcc.
1216 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
1219 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
1221 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
1222 # check for build == host before using them.
1225 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
1226 && test -d ../binutils ; then
1227 NM='${objdir}/../binutils/nm-new'
1229 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
1233 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
1234 && test -d ../binutils ; then
1235 AR='${objdir}/../binutils/ar'
1237 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
1240 # The jit documentation looks better if built with sphinx, but can be
1241 # built with texinfo if sphinx is not available.
1242 # Set "doc_build_sys" to "sphinx" or "texinfo" accordingly.
1243 AC_CHECK_PROG(doc_build_sys, sphinx-build, sphinx, texinfo)
1245 # --------------------
1246 # Checks for C headers
1247 # --------------------
1249 # Need to reject headers which give warnings, so that the -Werror bootstrap
1250 # works later. *sigh* This needs to come before all header checks.
1257 AC_HEADER_TIOCGWINSZ
1258 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
1259 fcntl.h ftw.h unistd.h sys/file.h sys/time.h sys/mman.h \
1260 sys/resource.h sys/param.h sys/times.h sys/stat.h \
1261 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
1263 # Check for thread headers.
1264 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
1265 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
1267 # These tests can't be done till we know if we have limits.h.
1271 # ----------------------
1272 # Checks for C++ headers
1273 # ----------------------
1275 dnl Autoconf will give an error in the configure script if there is no
1276 dnl C++ preprocessor. Hack to prevent that.
1277 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
1279 m4_popdef([AC_MSG_ERROR])[]dnl
1281 AC_CHECK_HEADERS(unordered_map)
1282 AC_CHECK_HEADERS(tr1/unordered_map)
1283 AC_CHECK_HEADERS(ext/hash_map)
1286 # Dependency checking.
1290 AC_CONFIG_COMMANDS([gccdepdir],[
1291 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR
1292 for lang in $subdirs c-family common analyzer rtl-ssa
1294 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs $lang/$DEPDIR
1295 done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR])
1297 ZW_PROG_COMPILER_DEPENDENCIES([CXX])
1304 # These libraries may be used by collect2.
1305 # We may need a special search path to get them linked.
1306 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
1308 for libs in '' -lld -lmld \
1309 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
1310 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1313 AC_TRY_LINK_FUNC(ldopen,
1314 [gcc_cv_collect2_libs="$libs"; break])
1317 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1318 case $gcc_cv_collect2_libs in
1320 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1322 AC_SUBST(COLLECT2_LIBS)
1324 # When building Ada code on Alpha, we need exc_resume which is usually in
1325 # -lexc. So test for it.
1328 AC_SEARCH_LIBS(exc_resume, exc)
1331 AC_SUBST(GNAT_LIBEXC)
1333 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1336 AC_SEARCH_LIBS(kstat_open, kstat)
1337 EXTRA_GCC_LIBS="$LIBS"
1339 AC_SUBST(EXTRA_GCC_LIBS)
1341 # Solaris needs libsocket and libnsl for socket functions before 11.4.
1342 # C++ needs those for libcody.
1350 # Some systems put ldexp and frexp in libm instead of libc; assume
1351 # they're both in the same place. jcf-dump needs them.
1354 AC_SEARCH_LIBS(ldexp, m)
1359 # Some systems need dlopen
1362 AC_SEARCH_LIBS(dlopen, dl)
1367 # Use <inttypes.h> only if it exists,
1368 # doesn't clash with <sys/types.h>, declares intmax_t and defines
1370 AC_MSG_CHECKING(for inttypes.h)
1371 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1372 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1373 [[#define __STDC_FORMAT_MACROS
1374 #include <sys/types.h>
1375 #include <inttypes.h>]],
1380 [gcc_cv_header_inttypes_h=yes],
1381 [gcc_cv_header_inttypes_h=no])])
1382 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1383 if test $gcc_cv_header_inttypes_h = yes; then
1384 AC_DEFINE(HAVE_INTTYPES_H, 1,
1385 [Define if you have a working <inttypes.h> header file.])
1388 # Look for the ZSTD package.
1391 AC_SUBST(ZSTD_INCLUDE)
1395 AC_SUBST(ZSTD_CPPFLAGS)
1396 AC_SUBST(ZSTD_LDFLAGS)
1398 [AS_HELP_STRING([--with-zstd=PATH],
1399 [specify prefix directory for installed zstd library.
1400 Equivalent to --with-zstd-include=PATH/include
1401 plus --with-zstd-lib=PATH/lib])])
1402 AC_ARG_WITH(zstd-include,
1403 [AS_HELP_STRING([--with-zstd-include=PATH],
1404 [specify directory for installed zstd include files])])
1405 AC_ARG_WITH(zstd-lib,
1406 [AS_HELP_STRING([--with-zstd-lib=PATH],
1407 [specify directory for the installed zstd library])])
1408 case "x$with_zstd" in
1414 *) ZSTD_INCLUDE=$with_zstd/include
1415 ZSTD_LIB=$with_zstd/lib
1419 if test "x$with_zstd" != xno; then
1420 if test "x$with_zstd_include" != x; then
1421 ZSTD_INCLUDE=$with_zstd_include
1423 if test "x$with_zstd_lib" != x; then
1424 ZSTD_LIB=$with_zstd_lib
1426 if test "x$ZSTD_INCLUDE" != x \
1427 && test "x$ZSTD_INCLUDE" != xno; then
1428 ZSTD_CPPFLAGS=-I$ZSTD_INCLUDE
1430 if test "x$ZSTD_LIB" != x \
1431 && test "x$ZSTD_LIB" != xno; then
1432 ZSTD_LDFLAGS=-L$ZSTD_LIB
1435 CXXFLAGS="$CXXFLAGS $ZSTD_CPPFLAGS"
1436 LDFLAGS="$LDFLAGS $ZSTD_LDFLAGS"
1438 AC_MSG_CHECKING(for zstd.h)
1439 AC_CACHE_VAL(gcc_cv_header_zstd_h,
1440 # We require version 1.3.0 or later. This is the first version that has
1441 # ZSTD_getFrameContentSize.
1442 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1444 #if ZSTD_VERSION_NUMBER < 10300
1445 #error "need zstd 1.3.0 or better"
1447 [gcc_cv_header_zstd_h=yes],
1448 [gcc_cv_header_zstd_h=no])])
1449 AC_MSG_RESULT($gcc_cv_header_zstd_h)
1450 if test $gcc_cv_header_zstd_h = yes; then
1451 AC_DEFINE(HAVE_ZSTD_H, 1,
1452 [Define if you have a working <zstd.h> header file.])
1453 elif test "x$with_zstd" != x; then
1454 as_fn_error $? "Unable to find zstd.h. See config.log for details." "$LINENO" 5
1457 # LTO can use zstd compression algorithm
1460 AC_SEARCH_LIBS(ZSTD_compress, zstd)
1466 dnl Disabled until we have a complete test for buggy enum bitfields.
1467 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1469 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1470 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1471 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1472 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1473 putchar_unlocked putc_unlocked)
1474 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoq \
1475 popen sysconf strsignal getrusage nl_langinfo \
1476 gettimeofday mbstowcs wcswidth mmap posix_fallocate setlocale \
1477 gcc_UNLOCKED_FUNCS madvise mallinfo mallinfo2 fstatat)
1479 if test x$ac_cv_func_mbstowcs = xyes; then
1480 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1481 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1487 [gcc_cv_func_mbstowcs_works=yes],
1488 [gcc_cv_func_mbstowcs_works=no],
1489 [gcc_cv_func_mbstowcs_works=yes])])
1490 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1491 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1492 [Define this macro if mbstowcs does not crash when its
1493 first argument is NULL.])
1497 AC_CHECK_TYPE(ssize_t, int)
1498 AC_CHECK_TYPE(caddr_t, char *)
1499 AC_CHECK_TYPE(sighander_t,
1500 AC_DEFINE(HAVE_SIGHANDLER_T, 1,
1501 [Define if <sys/signal.h> defines sighandler_t]),
1504 GCC_AC_FUNC_MMAP_BLACKLIST
1508 # Under VMS, vfork works very differently than on Unix. The standard test
1509 # won't work, and it isn't easily adaptable. It makes more sense to
1511 ac_cv_func_vfork_works=yes
1518 # Until we have in-tree GNU iconv:
1520 if test -f "$LTLIBICONV"; then
1521 LIBICONV_DEP=$LTLIBICONV
1523 AC_SUBST(LIBICONV_DEP)
1529 # We will need to find libiberty.h and ansidecl.h
1530 saved_CFLAGS="$CFLAGS"
1531 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1532 saved_CXXFLAGS="$CXXFLAGS"
1533 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1535 # gcc_AC_CHECK_DECLS doesn't support overloaded functions, so use the
1536 # normal autoconf function for these. But force definition of
1537 # HAVE_DECL_BASENAME like gcc_AC_CHECK_DECLS does, to suppress the bizarre
1538 # basename handling in libiberty.h.
1539 AC_CHECK_DECLS([basename(const char*), strstr(const char*,const char*)], , ,[
1540 #undef HAVE_DECL_BASENAME
1541 #define HAVE_DECL_BASENAME 1
1542 #include "ansidecl.h"
1543 #include "system.h"])
1545 gcc_AC_CHECK_DECLS(getenv atol atoll asprintf sbrk abort atof getcwd getwd \
1546 madvise stpcpy strnlen strsignal strverscmp \
1547 strtol strtoul strtoll strtoull setenv unsetenv \
1548 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1549 free getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1550 #include "ansidecl.h"
1551 #include "system.h"])
1553 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1554 #include "ansidecl.h"
1556 #ifdef HAVE_SYS_RESOURCE_H
1557 #include <sys/resource.h>
1561 gcc_AC_CHECK_DECLS(mallinfo mallinfo2, , ,[
1562 #include "ansidecl.h"
1564 #ifdef HAVE_MALLOC_H
1569 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1570 #include "ansidecl.h"
1572 #ifdef HAVE_SYS_RESOURCE_H
1573 #include <sys/resource.h>
1575 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1576 [Define to `long' if <sys/resource.h> doesn't define.])])
1578 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1579 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1580 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1581 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1582 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1583 #include "ansidecl.h"
1592 gcc_AC_CHECK_DECLS(times, , ,[
1593 #include "ansidecl.h"
1595 #ifdef HAVE_SYS_TIMES_H
1596 #include <sys/times.h>
1600 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1601 #include "ansidecl.h"
1606 # More time-related stuff.
1607 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1608 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1609 #include "ansidecl.h"
1611 #ifdef HAVE_SYS_TIMES_H
1612 #include <sys/times.h>
1614 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1615 if test $ac_cv_struct_tms = yes; then
1616 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1617 [Define if <sys/times.h> defines struct tms.])
1620 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1621 # revisit after autoconf 2.50.
1622 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1623 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1624 #include "ansidecl.h"
1626 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1627 if test $gcc_cv_type_clock_t = yes; then
1628 AC_DEFINE(HAVE_CLOCK_T, 1,
1629 [Define if <time.h> defines clock_t.])
1632 # Check if F_SETLKW is supported by fcntl.
1633 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1634 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1635 #include <fcntl.h>]], [[
1641 return fcntl (1, F_SETLKW, &fl);]])],
1642 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1643 if test $ac_cv_f_setlkw = yes; then
1644 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1645 [Define if F_SETLKW supported by fcntl.])
1648 # Check if O_CLOEXEC is defined by fcntl
1649 AC_CACHE_CHECK(for O_CLOEXEC, ac_cv_o_cloexec, [
1650 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1651 #include <fcntl.h>]], [[
1652 return open ("/dev/null", O_RDONLY | O_CLOEXEC);]])],
1653 [ac_cv_o_cloexec=yes],[ac_cv_o_cloexec=no])])
1654 if test $ac_cv_o_cloexec = yes; then
1655 AC_DEFINE(HOST_HAS_O_CLOEXEC, 1,
1656 [Define if O_CLOEXEC supported by fcntl.])
1659 # C++ Modules would like some networking features to provide the mapping
1660 # server. You can still use modules without them though.
1661 # The following network-related checks could probably do with some
1662 # Windows and other non-linux defenses and checking.
1664 # Local socket connectivity wants AF_UNIX networking
1665 # Check for AF_UNIX networking
1666 AC_CACHE_CHECK(for AF_UNIX, ac_cv_af_unix, [
1667 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1668 #include <sys/types.h>
1669 #include <sys/socket.h>
1671 #include <netinet/in.h>]],[[
1673 un.sun_family = AF_UNSPEC;
1674 int fd = socket (AF_UNIX, SOCK_STREAM, 0);
1675 connect (fd, (sockaddr *)&un, sizeof (un));]])],
1676 [ac_cv_af_unix=yes],
1677 [ac_cv_af_unix=no])])
1678 if test $ac_cv_af_unix = yes; then
1679 AC_DEFINE(HAVE_AF_UNIX, 1,
1680 [Define if AF_UNIX supported.])
1683 # Remote socket connectivity wants AF_INET6 networking
1684 # Check for AF_INET6 networking
1685 AC_CACHE_CHECK(for AF_INET6, ac_cv_af_inet6, [
1686 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1687 #include <sys/types.h>
1688 #include <sys/socket.h>
1689 #include <netinet/in.h>
1690 #include <netdb.h>]],[[
1692 in6.sin6_family = AF_UNSPEC;
1693 struct addrinfo *addrs = 0;
1694 struct addrinfo hints;
1696 hints.ai_family = AF_INET6;
1697 hints.ai_socktype = SOCK_STREAM;
1698 hints.ai_protocol = 0;
1699 hints.ai_canonname = 0;
1702 int e = getaddrinfo ("localhost", 0, &hints, &addrs);
1703 const char *str = gai_strerror (e);
1704 freeaddrinfo (addrs);
1705 int fd = socket (AF_INET6, SOCK_STREAM, 0);
1706 connect (fd, (sockaddr *)&in6, sizeof (in6));]])],
1707 [ac_cv_af_inet6=yes],
1708 [ac_cv_af_inet6=no])])
1709 if test $ac_cv_af_inet6 = yes; then
1710 AC_DEFINE(HAVE_AF_INET6, 1,
1711 [Define if AF_INET6 supported.])
1714 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1715 CFLAGS="$saved_CFLAGS"
1716 CXXFLAGS="$saved_CXXFLAGS"
1718 # mkdir takes a single argument on some systems.
1719 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1727 # With Setjmp/Longjmp based exception handling.
1728 AC_ARG_ENABLE(sjlj-exceptions,
1729 [AS_HELP_STRING([--enable-sjlj-exceptions],
1730 [arrange to use setjmp/longjmp exception handling])],
1733 if test $enableval != yes; then
1734 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1739 force_sjlj_exceptions=yes],
1742 force_sjlj_exceptions=yes
1746 force_sjlj_exceptions=yes
1750 force_sjlj_exceptions=no
1753 if test $force_sjlj_exceptions = yes; then
1754 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1755 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1756 [Define 0/1 to force the choice for exception handling model.])
1759 # --------------------------------------------------------
1760 # Build, host, and target specific configuration fragments
1761 # --------------------------------------------------------
1763 # Collect build-machine-specific information.
1764 . ${srcdir}/config.build || exit 1
1766 # Collect host-machine-specific information.
1767 . ${srcdir}/config.host || exit 1
1771 # Collect target-machine-specific information.
1772 . ${srcdir}/config.gcc || exit 1
1774 extra_objs="${host_extra_objs} ${extra_objs}"
1775 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1777 # Default the target-machine variables that were not explicitly set.
1778 if test x"$tm_file" = x
1779 then tm_file=$cpu_type/$cpu_type.h; fi
1781 if test x"$extra_headers" = x
1782 then extra_headers=; fi
1784 if test x$md_file = x
1785 then md_file=$cpu_type/$cpu_type.md; fi
1787 if test x$out_file = x
1788 then out_file=$cpu_type/$cpu_type.c; fi
1790 if test x"$tmake_file" = x
1791 then tmake_file=$cpu_type/t-$cpu_type
1794 # Support --enable-initfini-array.
1795 if test x$enable_initfini_array != xno; then
1796 tm_file="${tm_file} initfini-array.h"
1799 if test x"$dwarf2" = xyes
1800 then tm_file="$tm_file tm-dwarf2.h"
1803 # Say what files are being used for the output code and MD file.
1804 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1805 echo "Using \`$srcdir/config/$md_file' as machine description file."
1807 # If any of the xm_file variables contain nonexistent files, warn
1808 # about them and drop them.
1811 for x in $build_xm_file; do
1812 if test -f $srcdir/config/$x
1814 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1820 for x in $host_xm_file; do
1821 if test -f $srcdir/config/$x
1823 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1829 for x in $xm_file; do
1830 if test -f $srcdir/config/$x
1832 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1838 for f in $tm_file; do
1841 if test $count = ax; then
1842 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1844 echo "Using the following target machine macro files:"
1845 for f in $tm_file; do
1846 echo " $srcdir/config/$f"
1850 if test x$use_long_long_for_widest_fast_int = xyes; then
1851 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1852 [Define to 1 if the 'long long' type is wider than 'long' but still
1853 efficiently supported by the host hardware.])
1856 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1857 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1859 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1860 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1863 for f in $host_xm_file; do
1866 if test $count = a; then
1868 elif test $count = ax; then
1869 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1871 echo "Using the following host machine macro files:"
1872 for f in $host_xm_file; do
1873 echo " $srcdir/config/$f"
1876 echo "Using ${out_host_hook_obj} for host machine hooks."
1878 if test "$host_xm_file" != "$build_xm_file"; then
1880 for f in $build_xm_file; do
1883 if test $count = a; then
1885 elif test $count = ax; then
1886 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1888 echo "Using the following build machine macro files:"
1889 for f in $build_xm_file; do
1890 echo " $srcdir/config/$f"
1895 if test -n "$configured_native_system_header_dir"; then
1896 native_system_header_dir=$configured_native_system_header_dir
1898 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1899 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1903 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1904 gcc_cv_mcontext_underscores,
1905 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
1906 #include <sys/cdefs.h>
1907 #include <sys/signal.h>
1908 #include <ucontext.h>
1909 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1911 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1912 if test $gcc_cv_mcontext_underscores = yes; then
1913 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1914 [mcontext_t fields start with __])
1923 # Check if a valid thread package
1924 case ${enable_threads} in
1927 target_thread_file='single'
1931 target_thread_file='single'
1933 aix | dce | lynx | mipssde | posix | rtems | \
1934 single | tpf | vxworks | win32)
1935 target_thread_file=${enable_threads}
1938 echo "${enable_threads} is an unknown thread package" 1>&2
1943 if test x${thread_file} = x; then
1944 # No thread file set by target-specific clauses in config.gcc,
1945 # so use file chosen by default logic above
1946 thread_file=${target_thread_file}
1954 if test x$enable___cxa_atexit = xyes || \
1955 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1956 if test x$host = x$target; then
1958 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1959 # keyed to flag_use_cxa_atexit
1967 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1968 [echo "__cxa_atexit can't be enabled on this target"])
1972 # We can't check for __cxa_atexit when building a cross, so assume
1976 if test x$use_cxa_atexit = xyes; then
1977 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1978 [Define if you want to use __cxa_atexit, rather than atexit, to
1979 register C++ destructors for local statics and global objects.
1980 This is essential for fully standards-compliant handling of
1981 destructors, but requires __cxa_atexit in libc.])
1985 # Look for a file containing extra machine modes.
1986 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1987 extra_modes_file='$(srcdir)'/config/${extra_modes}
1988 AC_SUBST(extra_modes_file)
1989 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1990 [Define to the name of a file containing a list of extra machine modes
1991 for this architecture.])
1994 # Convert extra_options into a form suitable for Makefile use.
1997 for f in $extra_options; do
1998 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1999 all_opt_files="$all_opt_files $srcdir/config/$f"
2001 AC_SUBST(extra_opt_files)
2003 # auto-host.h is the file containing items generated by autoconf and is
2004 # the first file included by config.h.
2005 # If host=build, it is correct to have bconfig include auto-host.h
2006 # as well. If host!=build, we are in error and need to do more
2007 # work to find out the build config parameters.
2008 if test x$host = x$build
2010 build_auto=auto-host.h
2011 HAVE_AUTO_BUILD='# '
2013 # We create a subdir, then run autoconf in the subdir.
2014 # To prevent recursion we set host and build for the new
2015 # invocation of configure to the build for this invocation
2022 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
2023 *) realsrcdir=../${srcdir};;
2025 # Clearing GMPINC is necessary to prevent host headers being
2026 # used by the build compiler. Defining GENERATOR_FILE stops
2027 # system.h from including gmp.h.
2028 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
2029 CXX="${CXX_FOR_BUILD}" CXXFLAGS="${CXXFLAGS_FOR_BUILD}" \
2030 LD="${LD_FOR_BUILD}" LDFLAGS="${LDFLAGS_FOR_BUILD}" \
2031 GMPINC="" CPPFLAGS="${CPPFLAGS} -DGENERATOR_FILE" \
2032 ${realsrcdir}/configure \
2033 --enable-languages=${enable_languages-all} \
2034 ${enable_obsolete+--enable-obsolete="$enable_obsolete"} \
2035 ${enable_option_checking+--enable-option-checking="$enable_option_checking"} \
2036 --target=$target_alias --host=$build_alias \
2037 --build=$build_alias || exit # retaining $tempdir
2039 # We just finished tests for the build machine, so rename
2040 # the file auto-build.h in the gcc directory.
2041 mv auto-host.h ../auto-build.h
2044 build_auto=auto-build.h
2047 AC_SUBST(build_subdir)
2048 AC_SUBST(HAVE_AUTO_BUILD)
2050 tm_file="${tm_file} defaults.h"
2051 tm_p_file="${tm_p_file} tm-preds.h"
2052 tm_d_file="${tm_d_file} defaults.h"
2053 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
2054 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
2055 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
2056 # put this back in temporarily.
2057 xm_file="auto-host.h ansidecl.h ${xm_file}"
2064 # Compile in configure arguments.
2065 if test -f configargs.h ; then
2066 # Being re-configured.
2067 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
2068 gcc_reconf_arguments=`echo "$gcc_config_arguments" | sed -e 's/^.*\( : (reconfigured) .*$\)/\1/'`
2069 if [ "$gcc_reconf_arguments" != " : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS" ]; then
2070 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
2073 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
2076 # Double all backslashes and backslash all quotes to turn
2077 # gcc_config_arguments into a C string.
2078 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
2079 $gcc_config_arguments
2081 gcc_config_arguments_str=`cat conftest.out`
2084 cat > configargs.h <<EOF
2085 /* Generated automatically. */
2086 static const char configuration_arguments[] = "$gcc_config_arguments_str";
2087 static const char thread_model[] = "$thread_file";
2089 static const struct {
2090 const char *name, *value;
2091 } configure_default_options[] = $configure_default_options;
2096 gcc_BASEVER=`cat $srcdir/BASE-VER`
2097 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
2098 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
2099 if test -f $srcdir/REVISION ; then
2100 gcc_REVISION=`cat $srcdir/REVISION`
2104 cat > plugin-version.h <<EOF
2105 #include "configargs.h"
2107 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
2108 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
2109 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
2110 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
2112 static char basever[] = "$gcc_BASEVER";
2113 static char datestamp[] = "$gcc_DATESTAMP";
2114 static char devphase[] = "$gcc_DEVPHASE";
2115 static char revision[] = "$gcc_REVISION";
2117 /* FIXME plugins: We should make the version information more precise.
2118 One way to do is to add a checksum. */
2120 static struct plugin_gcc_version gcc_version = {basever, datestamp,
2122 configuration_arguments};
2126 # Determine what GCC version number to use in filesystem paths.
2129 # Internationalization
2130 ZW_GNU_GETTEXT_SISTER_DIR
2132 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
2133 # -liconv on the link line twice.
2134 case "$LIBINTL" in *$LIBICONV*)
2138 AC_ARG_ENABLE(secureplt,
2139 [AS_HELP_STRING([--enable-secureplt],
2140 [enable -msecure-plt by default for PowerPC])],
2143 AC_ARG_ENABLE(mingw-wildcard,
2144 [AS_HELP_STRING([--enable-mingw-wildcard],
2145 [Set whether to expand wildcard on command-line.
2146 Default to platform configuration])],
2147 [],[enable_mingw_wildcard=platform])
2148 AS_IF([test x"$enable_mingw_wildcard" != xplatform ],
2149 [AC_DEFINE_UNQUOTED(MINGW_DOWILDCARD,
2150 $(test x"$enable_mingw_wildcard" = xno; echo $?),
2151 [Value to set mingw's _dowildcard to.])])
2153 AC_ARG_ENABLE(large-address-aware,
2154 [AS_HELP_STRING([--enable-large-address-aware],
2155 [Link mingw executables with --large-address-aware])])
2156 AS_IF([test x"$enable_large_address_aware" = xyes],
2157 [AC_DEFINE([MINGW_DEFAULT_LARGE_ADDR_AWARE], 1,
2158 [Define if we should link mingw executables with --large-address-aware])])
2160 AC_ARG_ENABLE(leading-mingw64-underscores,
2161 AS_HELP_STRING([--enable-leading-mingw64-underscores],
2162 [enable leading underscores on 64 bit mingw targets]),
2164 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
2165 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
2166 [Define if we should use leading underscore on 64 bit mingw targets])])
2169 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
2172 AC_ARG_ENABLE(frame-pointer,
2173 [AS_HELP_STRING([--enable-frame-pointer],
2174 [enable -fno-omit-frame-pointer by default for x86])], [],
2177 linux* | gnu* | darwin[[8912]]* | cygwin* | mingw*)
2178 # Enable -fomit-frame-pointer by default for these systems with DWARF2.
2179 enable_frame_pointer=no
2182 enable_frame_pointer=yes
2188 i[[34567]]86-*-* | x86_64-*-*)
2189 if test "x$enable_cld" = xyes; then
2190 tm_defines="${tm_defines} USE_IX86_CLD=1"
2192 if test "x$enable_frame_pointer" = xyes; then
2193 tm_defines="${tm_defines} USE_IX86_FRAME_POINTER=1"
2198 # Windows32 Registry support for specifying GCC installation paths.
2199 AC_ARG_ENABLE(win32-registry,
2200 [AS_HELP_STRING([--disable-win32-registry],
2201 [disable lookup of installation paths in the
2202 Registry on Windows hosts])
2203 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
2204 AS_HELP_STRING([--enable-win32-registry=KEY],
2205 [use KEY instead of GCC version as the last portion
2206 of the registry key])],,)
2209 win32 | pe | cygwin* | mingw32*)
2210 if test "x$enable_win32_registry" != xno; then
2211 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
2214 if test "x$enable_win32_registry" != xno; then
2215 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
2216 [Define to 1 if installation paths should be looked up in the Windows
2217 Registry. Ignored on non-Windows hosts.])
2219 if test "x$enable_win32_registry" != xyes \
2220 && test "x$enable_win32_registry" != x; then
2221 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
2222 [Define to be the last component of the Windows registry key under which
2223 to look for installation paths. The full key used will be
2224 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
2225 The default is the GCC version number.])
2231 # Get an absolute path to the GCC top-level source directory
2232 holddir=`${PWDCMD-pwd}`
2234 topdir=`${PWDCMD-pwd}`
2237 # Conditionalize the makefile for this host machine.
2239 for f in ${host_xmake_file}
2241 if test -f ${srcdir}/config/$f
2243 xmake_file="${xmake_file} \$(srcdir)/config/$f"
2247 # Conditionalize the makefile for this target machine.
2249 for f in ${tmake_file}
2251 if test -f ${srcdir}/config/$f
2253 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
2256 tmake_file="${tmake_file_}${omp_device_property_tmake_file}"
2258 out_object_file=`basename $out_file .c`.o
2259 common_out_object_file=`basename $common_out_file .c`.o
2261 tm_file_list="options.h"
2262 tm_include_list="options.h insn-constants.h"
2263 for f in $tm_file; do
2266 f=`echo $f | sed 's/^..//'`
2267 tm_file_list="${tm_file_list} $f"
2268 tm_include_list="${tm_include_list} $f"
2271 tm_file_list="${tm_file_list} \$(srcdir)/$f"
2272 tm_include_list="${tm_include_list} $f"
2275 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
2276 tm_include_list="${tm_include_list} config/$f"
2283 for f in $tm_p_file; do
2286 tm_p_file_list="${tm_p_file_list} $f"
2287 tm_p_include_list="${tm_p_include_list} $f"
2290 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
2291 tm_p_include_list="${tm_p_include_list} config/$f"
2296 tm_d_include_list="options.h insn-constants.h"
2297 for f in $tm_d_file; do
2300 tm_d_file_list="${tm_d_file_list} \$(srcdir)/$f"
2301 tm_d_include_list="${tm_d_include_list} $f"
2304 tm_d_file_list="${tm_d_file_list} \$(srcdir)/config/$f"
2305 tm_d_include_list="${tm_d_include_list} config/$f"
2312 for f in $xm_file; do
2315 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
2316 xm_include_list="${xm_include_list} $f"
2319 xm_file_list="${xm_file_list} $f"
2320 xm_include_list="${xm_include_list} $f"
2323 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
2324 xm_include_list="${xm_include_list} config/$f"
2330 host_xm_include_list=
2331 for f in $host_xm_file; do
2334 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
2335 host_xm_include_list="${host_xm_include_list} $f"
2338 host_xm_file_list="${host_xm_file_list} $f"
2339 host_xm_include_list="${host_xm_include_list} $f"
2342 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
2343 host_xm_include_list="${host_xm_include_list} config/$f"
2349 for f in $build_xm_file; do
2352 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
2353 build_xm_include_list="${build_xm_include_list} $f"
2355 auto-build.h | auto-host.h )
2356 build_xm_file_list="${build_xm_file_list} $f"
2357 build_xm_include_list="${build_xm_include_list} $f"
2360 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
2361 build_xm_include_list="${build_xm_include_list} config/$f"
2366 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
2367 # cross-compiler which does not use the native headers and libraries.
2368 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
2369 CROSS= AC_SUBST(CROSS)
2370 ALL=all.internal AC_SUBST(ALL)
2371 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
2372 BUILD_SYSTEM_HEADER_DIR=$SYSTEM_HEADER_DIR AC_SUBST(BUILD_SYSTEM_HEADER_DIR)
2374 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x ||
2375 test x$build != x$host || test "x$with_build_sysroot" != x; then
2376 if test "x$with_build_sysroot" != x; then
2377 BUILD_SYSTEM_HEADER_DIR=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
2379 BUILD_SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2382 if test x$host != x$target
2384 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
2386 SYSTEM_HEADER_DIR=$BUILD_SYSTEM_HEADER_DIR
2387 elif test "x$TARGET_SYSTEM_ROOT" != x; then
2388 SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2391 if test "x$with_build_sysroot" != "x"; then
2392 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
2393 elif test "x$with_sysroot" = x; then
2394 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
2395 elif test "x$with_sysroot" = xyes; then
2396 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
2398 target_header_dir="${with_sysroot}${native_system_header_dir}"
2401 target_header_dir=${native_system_header_dir}
2404 # If this is a cross-compiler that does not
2405 # have its own set of headers then define
2408 # If this is using newlib, without having the headers available now,
2409 # then define inhibit_libc in LIBGCC2_CFLAGS.
2410 # This prevents libgcc2 from containing any code which requires libc
2412 : ${inhibit_libc=false}
2413 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
2414 test x$with_newlib = xyes ; } &&
2415 { test "x$with_headers" = xno || test ! -f "$target_header_dir/stdio.h"; } ; then
2418 AC_SUBST(inhibit_libc)
2420 # When building gcc with a cross-compiler, we need to adjust things so
2421 # that the generator programs are still built with the native compiler.
2422 # Also, we cannot run fixincludes.
2424 # These are the normal (build=host) settings:
2425 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
2426 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
2427 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
2428 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
2429 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
2430 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
2432 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS)' AC_SUBST(BUILD_NO_PIE_CFLAGS)
2433 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG)' AC_SUBST(BUILD_NO_PIE_FLAG)
2435 # And these apply if build != host, or we are generating coverage data
2436 if test x$build != x$host || test "x$coverage_flags" != x
2438 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
2439 BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CXXFLAGS_FOR_BUILD)'
2440 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
2442 NO_PIE_CFLAGS_FOR_BUILD=${NO_PIE_CFLAGS_FOR_BUILD-${NO_PIE_CFLAGS}}
2443 NO_PIE_FLAG_FOR_BUILD=${NO_PIE_FLAG_FOR_BUILD-${NO_PIE_FLAG}}
2444 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS_FOR_BUILD)'
2445 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG_FOR_BUILD)'
2447 AC_SUBST(NO_PIE_CFLAGS_FOR_BUILD)
2448 AC_SUBST(NO_PIE_FLAG_FOR_BUILD)
2450 # Expand extra_headers to include complete path.
2451 # This substitutes for lots of t-* files.
2453 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
2454 for file in ${extra_headers} ; do
2455 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
2458 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
2459 if test x"$use_gcc_tgmath" = xyes
2460 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
2463 # Define collect2 in Makefile.
2464 case $host_can_use_collect2 in
2466 *) collect2='collect2$(exeext)' ;;
2468 AC_SUBST([collect2])
2470 # Add a definition of USE_COLLECT2 if system wants one.
2471 case $use_collect2 in
2472 no) use_collect2= ;;
2475 host_xm_defines="${host_xm_defines} USE_COLLECT2"
2476 xm_defines="${xm_defines} USE_COLLECT2"
2477 case $host_can_use_collect2 in
2479 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
2485 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
2486 [Define to the name of the LTO plugin DSO that must be
2487 passed to the linker's -plugin=LIB option.])
2489 # ---------------------------
2490 # Assembler & linker features
2491 # ---------------------------
2493 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
2494 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
2495 # However when ld-new is first executed from the build tree, libtool will
2496 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
2497 # to the build tree. While doing this we need to use the previous-stage
2498 # linker, or we have an infinite loop. The presence of a shell script as
2499 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
2500 # the gcc/collect-ld script. So we need to know how libtool works, or
2501 # exec-tool will fail.
2503 m4_defun([_LT_CONFIG_COMMANDS], [])
2506 AC_SUBST(enable_fast_install)
2508 # Identify the assembler which will work hand-in-glove with the newly
2509 # built GCC, so that we can examine its features. This is the assembler
2510 # which will be driven by the driver program.
2512 # If build != host, and we aren't building gas in-tree, we identify a
2513 # build->target assembler and hope that it will have the same features
2514 # as the host->target assembler we'll be using.
2515 gcc_cv_gas_major_version=
2516 gcc_cv_gas_minor_version=
2517 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
2519 m4_pattern_allow([AS_FOR_TARGET])dnl
2520 AS_VAR_SET_IF(gcc_cv_as,, [
2521 if test -x "$DEFAULT_ASSEMBLER"; then
2522 gcc_cv_as="$DEFAULT_ASSEMBLER"
2523 elif test -f $gcc_cv_as_gas_srcdir/configure.ac \
2524 && test -f ../gas/Makefile \
2525 && test x$build = x$host; then
2526 gcc_cv_as=../gas/as-new$build_exeext
2527 elif test -x as$build_exeext; then
2528 # Build using assembler in the current directory.
2529 gcc_cv_as=./as$build_exeext
2530 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
2531 gcc_cv_as="$AS_FOR_TARGET"
2533 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
2536 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
2537 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
2538 case "$ORIGINAL_AS_FOR_TARGET" in
2539 ./as | ./as$build_exeext) ;;
2540 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2543 AC_MSG_CHECKING(what assembler to use)
2544 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
2545 # Single tree build which includes gas. We want to prefer it
2546 # over whatever linker top-level may have detected, since
2547 # we'll use what we're building after installation anyway.
2548 AC_MSG_RESULT(newly built gas)
2550 _gcc_COMPUTE_GAS_VERSION
2551 in_tree_gas_is_elf=no
2552 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
2553 || (grep 'obj_format = multi' ../gas/Makefile \
2554 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
2556 in_tree_gas_is_elf=yes
2559 AC_MSG_RESULT($gcc_cv_as)
2565 [[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]],
2566 [case "${enableval}" in
2572 install_gold_as_default=no
2574 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
2575 [case "${enableval}" in
2577 install_gold_as_default=yes
2580 if test x${default_ld} != x; then
2581 install_gold_as_default=yes
2587 AC_MSG_ERROR([invalid --enable-gold argument])
2591 # Identify the linker which will work hand-in-glove with the newly
2592 # built GCC, so that we can examine its features. This is the linker
2593 # which will be driven by the driver program.
2595 # If build != host, and we aren't building gas in-tree, we identify a
2596 # build->target linker and hope that it will have the same features
2597 # as the host->target linker we'll be using.
2598 gcc_cv_gld_major_version=
2599 gcc_cv_gld_minor_version=
2600 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2601 gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold
2602 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2604 AS_VAR_SET_IF(gcc_cv_ld,, [
2605 if test -x "$DEFAULT_LINKER"; then
2606 gcc_cv_ld="$DEFAULT_LINKER"
2607 elif test $install_gold_as_default = yes \
2608 && test -f $gcc_cv_ld_gold_srcdir/configure.ac \
2609 && test -f ../gold/Makefile \
2610 && test x$build = x$host; then
2611 gcc_cv_ld=../gold/ld-new$build_exeext
2612 elif test -f $gcc_cv_ld_gld_srcdir/configure.ac \
2613 && test -f ../ld/Makefile \
2614 && test x$build = x$host; then
2615 gcc_cv_ld=../ld/ld-new$build_exeext
2616 elif test -x collect-ld$build_exeext; then
2617 # Build using linker in the current directory.
2618 gcc_cv_ld=./collect-ld$build_exeext
2619 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2620 gcc_cv_ld="$LD_FOR_TARGET"
2622 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2625 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2626 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2627 # if the PLUGIN_LD is set ld-new, just have it as ld
2628 # as that is the installed named.
2629 if test x$PLUGIN_LD_SUFFIX = xld-new \
2630 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2633 AC_ARG_WITH(plugin-ld,
2634 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2635 [if test x"$withval" != x; then
2636 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2637 PLUGIN_LD_SUFFIX="$withval"
2639 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2640 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2642 # Check to see if we are using gold instead of ld
2643 AC_MSG_CHECKING(whether we are using gold)
2645 if test x$gcc_cv_ld != x; then
2646 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2647 | grep "GNU gold" > /dev/null; then
2651 AC_MSG_RESULT($ld_is_gold)
2653 AC_MSG_CHECKING(gold linker with split stack support as non default)
2654 # Check to see if default ld is not gold, but gold is
2655 # available and has support for split stack. If gcc was configured
2656 # with gold then no checking is done.
2658 if test x$ld_is_gold = xno && which ${gcc_cv_ld}.gold >/dev/null 2>&1; then
2660 # For platforms other than powerpc64*, enable as appropriate.
2663 ld_gold=`which ${gcc_cv_ld}.gold`
2664 # Make sure this gold has minimal split stack support
2665 if $ld_gold --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then
2666 ld_vers=`$ld_gold --version | sed 1q`
2667 gold_vers=`echo $ld_vers | sed -n \
2668 -e 's,^[[^)]]*[[ ]]\([[0-9]][[0-9]]*\.[[0-9]][[0-9]]*[[^)]]*\)) .*$,\1,p'`
2670 # check that the gold version contains the complete split stack support
2671 # on powerpc64 big and little endian
2673 case "$gold_vers" in
2674 2.25.[[1-9]]*|2.2[[6-9]][[.0-9]]*|2.[[3-9]][[.0-9]]*|[[3-9]].[[.0-9]]*) gold_non_default=yes
2676 *) gold_non_default=no
2682 if test $gold_non_default = yes; then
2683 AC_DEFINE(HAVE_GOLD_NON_DEFAULT_SPLIT_STACK, 1,
2684 [Define if the gold linker supports split stack and is available as a non-default])
2687 AC_MSG_RESULT($gold_non_default)
2689 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2690 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2691 case "$ORIGINAL_LD_FOR_TARGET" in
2692 ./collect-ld | ./collect-ld$build_exeext) ;;
2693 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2696 AC_MSG_CHECKING(what linker to use)
2697 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2698 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2699 # Single tree build which includes ld. We want to prefer it
2700 # over whatever linker top-level may have detected, since
2701 # we'll use what we're building after installation anyway.
2702 AC_MSG_RESULT(newly built ld)
2704 in_tree_ld_is_elf=no
2705 if (grep 'EMUL = .*elf' ../ld/Makefile \
2706 || grep 'EMUL = .*linux' ../ld/Makefile \
2707 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2708 in_tree_ld_is_elf=yes
2709 elif test "$ld_is_gold" = yes; then
2710 in_tree_ld_is_elf=yes
2712 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
2715 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2716 if test x$gcc_cv_gld_version != x; then
2720 case $gcc_cv_gld_version in
2723 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2726 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2727 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2729 ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext
2730 ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext
2732 AC_MSG_RESULT($gcc_cv_ld)
2734 gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext`
2735 ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext
2736 ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext
2739 AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET)
2740 AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET)
2742 # Figure out what nm we will be using.
2743 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2744 AS_VAR_SET_IF(gcc_cv_nm,, [
2745 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2746 && test -f ../binutils/Makefile \
2747 && test x$build = x$host; then
2748 gcc_cv_nm=../binutils/nm-new$build_exeext
2749 elif test -x nm$build_exeext; then
2750 gcc_cv_nm=./nm$build_exeext
2751 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2752 gcc_cv_nm="$NM_FOR_TARGET"
2754 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2757 AC_MSG_CHECKING(what nm to use)
2758 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2759 # Single tree build which includes binutils.
2760 AC_MSG_RESULT(newly built nm)
2763 AC_MSG_RESULT($gcc_cv_nm)
2767 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2768 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2769 case "$ORIGINAL_NM_FOR_TARGET" in
2770 ./nm | ./nm$build_exeext) ;;
2771 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2775 # Figure out what objdump we will be using.
2776 AS_VAR_SET_IF(gcc_cv_objdump,, [
2777 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2778 && test -f ../binutils/Makefile \
2779 && test x$build = x$host; then
2780 # Single tree build which includes binutils.
2781 gcc_cv_objdump=../binutils/objdump$build_exeext
2782 elif test -x objdump$build_exeext; then
2783 gcc_cv_objdump=./objdump$build_exeext
2784 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2785 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2787 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2790 AC_MSG_CHECKING(what objdump to use)
2791 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2792 # Single tree build which includes binutils.
2793 AC_MSG_RESULT(newly built objdump)
2794 elif test x$gcc_cv_objdump = x; then
2795 AC_MSG_RESULT(not found)
2797 AC_MSG_RESULT($gcc_cv_objdump)
2800 # Figure out what readelf we will be using.
2801 AS_VAR_SET_IF(gcc_cv_readelf,, [
2802 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2803 && test -f ../binutils/Makefile \
2804 && test x$build = x$host; then
2805 # Single tree build which includes binutils.
2806 gcc_cv_readelf=../binutils/readelf$build_exeext
2807 elif test -x readelf$build_exeext; then
2808 gcc_cv_readelf=./readelf$build_exeext
2809 elif ( set dummy $READELF_FOR_TARGET; test -x $[2] ); then
2810 gcc_cv_readelf="$READELF_FOR_TARGET"
2812 AC_PATH_PROG(gcc_cv_readelf, $READELF_FOR_TARGET)
2815 AC_MSG_CHECKING(what readelf to use)
2816 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2817 # Single tree build which includes binutils.
2818 AC_MSG_RESULT(newly built readelf)
2819 elif test x$gcc_cv_readelf = x; then
2820 AC_MSG_RESULT(not found)
2822 AC_MSG_RESULT($gcc_cv_readelf)
2825 # Figure out what otool we will be using.
2826 AS_VAR_SET_IF(gcc_cv_otool,, [
2827 if test -x otool$build_exeext; then
2828 gcc_cv_otool=./otool$build_exeext
2829 elif ( set dummy $OTOOL_FOR_TARGET; test -x $[2] ); then
2830 gcc_cv_otool="$OTOOL_FOR_TARGET"
2832 AC_PATH_PROG(gcc_cv_otool, $OTOOL_FOR_TARGET)
2835 AC_MSG_CHECKING(what otool to use)
2836 if test x$gcc_cv_otool = x; then
2837 AC_MSG_RESULT(not found)
2839 AC_MSG_RESULT($gcc_cv_otool)
2842 # Figure out what assembler alignment features are present.
2843 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2847 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2848 [Define if your assembler supports .balign and .p2align.])])
2850 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2853 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2854 [Define if your assembler supports specifying the maximum number
2855 of bytes to skip when using the GAS .p2align command.])])
2857 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2860 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2861 [Define if your assembler supports .literal16.])])
2863 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2865 [conftest_label1: .word 0
2867 conftest_label2: .word 0
2869 [if test x$gcc_cv_nm != x; then
2870 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2871 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2872 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2874 else gcc_cv_as_subsection_m1=yes
2876 rm -f conftest.nm1 conftest.nm2
2878 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2879 [Define if your assembler supports .subsection and .subsection -1 starts
2880 emitting at the beginning of your section.])])
2882 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2885 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2887 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2889 [ .weakref foobar, barfnot],,
2890 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2892 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2895 .NSUBSPA $CODE$,COMDAT],,
2896 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2898 # .hidden needs to be supported in both the assembler and the linker,
2899 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2900 # This is irritatingly difficult to feature test for; we have to check the
2901 # date string after the version number. If we've got an in-tree
2902 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2904 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2907 conftest_s=' .globl foobar,hidden'
2910 conftest_s=' .hidden foobar
2914 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2915 [elf,2,13,0],, [$conftest_s])
2918 # Darwin as has some visibility support, though with a different syntax.
2919 gcc_cv_as_hidden=yes
2923 # gnu_indirect_function type is an extension proposed at
2924 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2925 # selection of function implementation
2926 AC_ARG_ENABLE(gnu-indirect-function,
2927 [AS_HELP_STRING([--enable-gnu-indirect-function],
2928 [enable the use of the @gnu_indirect_function to glibc systems])],
2929 [case $enable_gnu_indirect_function in
2931 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2932 Valid choices are 'yes' and 'no'.]) ;;
2934 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2938 AC_MSG_CHECKING(linker ifunc IRELATIVE support)
2939 cat > conftest.s <<EOF
2941 .type foo_resolver, @function
2944 .size foo_resolver, .-foo_resolver
2947 .type foo, %gnu_indirect_function
2948 .set foo, foo_resolver
2951 .type bar, @function
2957 if test x$gcc_cv_as != x \
2958 && test x$gcc_cv_ld != x \
2959 && test x$gcc_cv_readelf != x \
2960 && $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2961 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1 \
2962 && $gcc_cv_readelf --relocs --wide conftest \
2963 | grep R_RISCV_IRELATIVE > /dev/null 2>&1; then
2964 enable_gnu_indirect_function=yes
2966 rm -f conftest conftest.o conftest.s
2967 AC_MSG_RESULT($enable_gnu_indirect_function)
2971 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
2972 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
2973 [Define if your system supports gnu indirect functions.])
2977 if test $in_tree_ld != yes ; then
2978 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2979 if echo "$ld_ver" | grep GNU > /dev/null; then
2980 if test x"$ld_is_gold" = xyes; then
2981 # GNU gold --version looks like this:
2983 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2985 # We extract the binutils version which is more familiar and specific
2986 # than the gold version.
2987 ld_vers=`echo $ld_ver | sed -n \
2988 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2990 # GNU ld --version looks like this:
2992 # GNU ld (GNU Binutils) 2.21.51.20110225
2993 ld_vers=`echo $ld_ver | sed -n \
2994 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2996 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)\(-*\)\([01][0-9]\)\2\([0-3][0-9]\).*$,\1\3\4,p'`
2997 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2998 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2999 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
3003 # Solaris 2 ld -V output looks like this for a regular version:
3005 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
3007 # but test versions add stuff at the end:
3009 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
3011 # ld and ld.so.1 are guaranteed to be updated in lockstep, so ld version
3012 # numbers can be used in ld.so.1 feature checks even if a different
3013 # linker is configured.
3014 ld_ver=`$gcc_cv_ld -V 2>&1`
3015 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
3016 ld_vers=`echo $ld_ver | sed -n \
3017 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
3018 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3019 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3027 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
3028 [[if test $in_tree_ld = yes ; then
3030 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
3031 && test $in_tree_ld_is_elf = yes; then
3032 gcc_cv_ld_hidden=yes
3035 gcc_cv_ld_hidden=yes
3036 if test x"$ld_is_gold" = xyes; then
3038 elif echo "$ld_ver" | grep GNU > /dev/null; then
3039 if test 0"$ld_date" -lt 20020404; then
3040 if test -n "$ld_date"; then
3041 # If there was date string, but was earlier than 2002-04-04, fail
3043 elif test -z "$ld_vers"; then
3044 # If there was no date string nor ld version number, something is wrong
3047 test -z "$ld_vers_patch" && ld_vers_patch=0
3048 if test "$ld_vers_major" -lt 2; then
3050 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
3051 gcc_cv_ld_hidden="no"
3052 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
3060 gcc_cv_ld_hidden=yes
3063 # Darwin ld has some visibility support.
3064 gcc_cv_ld_hidden=yes
3066 hppa64*-*-hpux* | ia64*-*-hpux*)
3067 gcc_cv_ld_hidden=yes
3070 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
3071 # .symbolic was only added in Solaris 9 12/02.
3072 gcc_cv_ld_hidden=yes
3080 libgcc_visibility=no
3081 AC_SUBST(libgcc_visibility)
3082 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
3083 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
3084 libgcc_visibility=yes
3085 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
3086 [Define if your assembler and linker support .hidden.])
3089 AC_MSG_CHECKING(linker read-only and read-write section mixing)
3090 gcc_cv_ld_ro_rw_mix=unknown
3091 if test $in_tree_ld = yes ; then
3092 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
3093 && test $in_tree_ld_is_elf = yes; then
3094 gcc_cv_ld_ro_rw_mix=read-write
3096 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3097 echo '.section myfoosect, "a"' > conftest1.s
3098 echo '.section myfoosect, "aw"' > conftest2.s
3099 echo '.byte 1' >> conftest2.s
3100 echo '.section myfoosect, "a"' > conftest3.s
3101 echo '.byte 0' >> conftest3.s
3102 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
3103 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
3104 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
3105 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
3106 conftest2.o conftest3.o > /dev/null 2>&1; then
3107 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
3108 | sed -e '/myfoosect/!d' -e N`
3109 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
3110 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
3111 gcc_cv_ld_ro_rw_mix=read-only
3113 gcc_cv_ld_ro_rw_mix=read-write
3118 rm -f conftest.* conftest[123].*
3121 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
3122 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
3123 [Define if your linker links a mix of read-only
3124 and read-write sections into a read-write section.])
3126 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
3128 gcc_AC_INITFINI_ARRAY
3130 # Check if we have .[us]leb128, and support symbol arithmetic with it.
3131 # Older versions of GAS and some non-GNU assemblers, have a bugs handling
3132 # these directives, even when they appear to accept them.
3133 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
3141 .uleb128 0x8000000000000000
3144 if test "x$gcc_cv_objdump" != x; then
3145 if $gcc_cv_objdump -s conftest.o 2>/dev/null \
3146 | grep '04800a8e 78808080 80808080 808001' >/dev/null; then
3147 gcc_cv_as_leb128=yes
3149 elif test "x$gcc_cv_otool" != x; then
3150 if $gcc_cv_otool -d conftest.o 2>/dev/null \
3151 | grep '04 80 0a 8e 78 80 80 80 80 80 80 80 80 80 01' >/dev/null; then
3152 gcc_cv_as_leb128=yes
3155 # play safe, assume the assembler is broken.
3159 [AC_DEFINE(HAVE_AS_LEB128, 1,
3160 [Define if your assembler supports .sleb128 and .uleb128.])],
3161 [AC_DEFINE(HAVE_AS_LEB128, 0,
3162 [Define if your assembler supports .sleb128 and .uleb128.])])
3164 # Determine if an .eh_frame section is read-only.
3165 gcc_fn_eh_frame_ro () {
3166 $gcc_cv_as $1 -o conftest.o conftest.s > /dev/null 2>&1 && \
3167 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
3168 sed -e '/.eh_frame/!d' -e N | grep READONLY > /dev/null
3171 # Check if we have assembler support for unwind directives.
3172 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
3179 .cfi_escape 1, 2, 3, 4, 5
3183 # If the linker used on Solaris (like Sun ld) isn't capable of merging
3184 # read-only and read-write sections, we need to make sure that the
3185 # assembler used emits read-write .eh_frame sections.
3186 if test "x$gcc_cv_ld_ro_rw_mix" = xread-write; then
3187 gcc_cv_as_cfi_directive=yes
3188 elif test "x$gcc_cv_objdump" = x; then
3189 # No objdump, err on the side of caution.
3190 gcc_cv_as_cfi_directive=no
3192 if test x$gas = xyes; then
3200 sparc*-*-solaris2.*)
3201 # On Solaris/SPARC, .eh_frame sections should always be read-write.
3202 if gcc_fn_eh_frame_ro $as_32_opt \
3203 || gcc_fn_eh_frame_ro $as_64_opt; then
3204 gcc_cv_as_cfi_directive=no
3206 gcc_cv_as_cfi_directive=yes
3209 i?86-*-solaris2.* | x86_64-*-solaris2.*)
3210 # On Solaris/x86, make sure that GCC and assembler agree on using
3211 # read-only .eh_frame sections for 64-bit.
3212 if gcc_fn_eh_frame_ro $as_32_opt; then
3213 gcc_cv_as_cfi_directive=no
3214 elif gcc_fn_eh_frame_ro $as_64_opt; then
3215 gcc_cv_as_cfi_directive=yes
3217 gcc_cv_as_cfi_directive=no
3224 gcc_cv_as_cfi_directive=yes
3227 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
3228 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
3232 .cfi_adjust_cfa_offset 64
3234 .cfi_adjust_cfa_offset 128
3237 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
3238 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
3239 gcc_cv_as_cfi_advance_working=yes
3243 # no objdump, err on the side of caution
3244 gcc_cv_as_cfi_advance_working=no
3246 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
3247 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
3248 [`if test $gcc_cv_as_cfi_directive = yes \
3249 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
3250 [Define 0/1 if your assembler supports CFI directives.])
3252 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
3253 gcc_GAS_CHECK_FEATURE([cfi personality directive],
3254 gcc_cv_as_cfi_personality_directive, ,,
3257 .cfi_personality 0, symbol
3259 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
3260 [`if test $gcc_cv_as_cfi_personality_directive = yes; then echo 1; else echo 0; fi`],
3261 [Define 0/1 if your assembler supports .cfi_personality.])
3263 gcc_GAS_CHECK_FEATURE([cfi sections directive],
3264 gcc_cv_as_cfi_sections_directive, ,,
3266 .cfi_sections .debug_frame, .eh_frame
3270 win32 | pe | cygwin* | mingw32*)
3271 # Need to check that we generated the correct relocation for the
3272 # .debug_frame section. This was fixed for binutils 2.21.
3273 gcc_cv_as_cfi_sections_directive=no
3274 if test "x$gcc_cv_objdump" != x; then
3275 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
3276 grep secrel > /dev/null; then
3277 gcc_cv_as_cfi_sections_directive=yes
3282 gcc_cv_as_cfi_sections_directive=yes
3285 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
3286 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
3287 [`if test $gcc_cv_as_cfi_sections_directive = yes; then echo 1; else echo 0; fi`],
3288 [Define 0/1 if your assembler supports .cfi_sections.])
3290 # GAS versions up to and including 2.11.0 may mis-optimize
3292 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
3300 .section .eh_frame,"aw",@progbits
3302 .4byte .LECIE1-.LSCIE1
3316 .4byte .LEFDE1-.LASFDE1
3318 .4byte .LASFDE1-__FRAME_BEGIN__
3326 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
3327 cat > conftest.lit <<EOF
3328 0000 10000000 00000000 017a0001 781a0004 .........z..x...
3329 0010 01000000 12000000 18000000 00000000 ................
3330 0020 08000000 04080000 0044 .........D @&t@
3332 cat > conftest.big <<EOF
3333 0000 00000010 00000000 017a0001 781a0004 .........z..x...
3334 0010 00000001 00000012 00000018 00000000 ................
3335 0020 00000008 04000000 0844 .........D @&t@
3337 # If the assembler didn't choke, and we can objdump,
3338 # and we got the correct data, then succeed.
3339 # The text in the here-document typically retains its unix-style line
3340 # endings, while the output of objdump will use host line endings.
3341 # Therefore, use diff -b for the comparisons.
3342 if test x$gcc_cv_objdump != x \
3343 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
3344 | tail -3 > conftest.got \
3345 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
3346 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
3348 gcc_cv_as_eh_frame=yes
3349 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
3350 gcc_cv_as_eh_frame=buggy
3352 # Uh oh, what do we do now?
3353 gcc_cv_as_eh_frame=no
3356 if test $gcc_cv_as_eh_frame = buggy; then
3357 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
3358 [Define if your assembler mis-optimizes .eh_frame data.])
3361 # Test if the assembler supports the section flag 'e' or #exclude for
3362 # specifying an excluded section.
3363 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_e,
3364 [2,22,51], [--fatal-warnings],
3367 if test $gcc_cv_as_section_exclude_e = no; then
3369 # Solaris as uses #exclude instead.
3373 conftest_s='.section "foo1", #exclude'
3375 i?86-*-solaris2* | x86_64-*-solaris2*)
3376 conftest_s='.section foo1, #exclude'
3381 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_hash,,,
3385 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3386 [`if test $gcc_cv_as_section_exclude_e = yes || test $gcc_cv_as_section_exclude_hash = yes; then echo 1; else echo 0; fi`],
3387 [Define if your assembler supports specifying the exclude section flag.])
3389 # Test if the assembler supports the section flag 'R' for specifying
3390 # section with SHF_GNU_RETAIN.
3392 # Solaris may use GNU assembler with Solairs ld. Even if GNU
3393 # assembler supports the section flag 'R', it doesn't mean that
3394 # Solairs ld supports it.
3396 gcc_cv_as_shf_gnu_retain=no
3399 gcc_GAS_CHECK_FEATURE([section 'R' flag], gcc_cv_as_shf_gnu_retain,
3400 [elf,2,36,0], [--fatal-warnings],
3401 [.section .foo,"awR",%progbits
3405 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_GNU_RETAIN,
3406 [`if test $gcc_cv_as_shf_gnu_retain = yes; then echo 1; else echo 0; fi`],
3407 [Define 0/1 if your assembler supports marking sections with SHF_GNU_RETAIN flag.])
3409 # Test if the assembler supports the section flag 'o' for specifying
3410 # section with link-order.
3412 # Solaris may use GNU assembler with Solairs ld. Even if GNU
3413 # assembler supports the section flag 'o', it doesn't mean that
3414 # Solairs ld supports it.
3416 gcc_cv_as_section_link_order=no
3419 gcc_GAS_CHECK_FEATURE([section 'o' flag], gcc_cv_as_section_link_order,
3420 [2,35,0], [--fatal-warnings],
3423 .section __patchable_function_entries,"awo",%progbits,.foo
3427 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_LINK_ORDER,
3428 [`if test $gcc_cv_as_section_link_order = yes; then echo 1; else echo 0; fi`],
3429 [Define 0/1 if your assembler supports 'o' flag in .section directive.])
3431 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
3432 [elf,2,12,0], [--fatal-warnings],
3433 [.section .rodata.str, "aMS", @progbits, 1])
3434 if test $gcc_cv_as_shf_merge = no; then
3435 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
3436 [elf,2,12,0], [--fatal-warnings],
3437 [.section .rodata.str, "aMS", %progbits, 1])
3439 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
3440 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
3441 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
3443 gcc_cv_ld_aligned_shf_merge=yes
3445 # SHF_MERGE support is broken in Solaris ld up to Solaris 11.3/SPARC for
3447 sparc*-*-solaris2.11*)
3448 if test x"$gnu_ld" = xno \
3449 && test "$ld_vers_major" -lt 2 && test "$ld_vers_minor" -lt 3159; then
3450 gcc_cv_ld_aligned_shf_merge=no
3454 AC_DEFINE_UNQUOTED(HAVE_LD_ALIGNED_SHF_MERGE,
3455 [`if test $gcc_cv_ld_aligned_shf_merge = yes; then echo 1; else echo 0; fi`],
3456 [Define 0/1 if your linker supports the SHF_MERGE flag with section alignment > 1.])
3458 gcc_GAS_CHECK_FEATURE([stabs directive], gcc_cv_as_stabs_directive, ,,
3459 [.stabs "gcc2_compiled.",60,0,0,0],,
3460 [AC_DEFINE(HAVE_AS_STABS_DIRECTIVE, 1,
3461 [Define if your assembler supports .stabs.])])
3463 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
3464 gcc_cv_as_comdat_group,
3465 [elf,2,16,0], [--fatal-warnings],
3466 [.section .text,"axG",@progbits,.foo,comdat])
3467 if test $gcc_cv_as_comdat_group = yes; then
3468 gcc_cv_as_comdat_group_percent=no
3469 gcc_cv_as_comdat_group_group=no
3471 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
3472 gcc_cv_as_comdat_group_percent,
3473 [elf,2,16,0], [--fatal-warnings],
3474 [.section .text,"axG",%progbits,.foo,comdat])
3475 if test $gcc_cv_as_comdat_group_percent = yes; then
3476 gcc_cv_as_comdat_group_group=no
3479 # Sun as uses a completely different syntax.
3484 .group foo,".text%foo",#comdat
3485 .section ".text%foo", #alloc,#execinstr,#progbits
3490 i?86-*-solaris2* | x86_64-*-solaris2*)
3492 .group foo,.text%foo,#comdat
3493 .section .text%foo, "ax", @progbits
3499 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
3500 gcc_cv_as_comdat_group_group,
3504 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
3505 gcc_cv_as_comdat_group_group=no
3509 if test x"$ld_is_gold" = xyes; then
3511 elif test $in_tree_ld = yes ; then
3513 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3514 && test $in_tree_ld_is_elf = yes; then
3517 elif echo "$ld_ver" | grep GNU > /dev/null; then
3519 if test 0"$ld_date" -lt 20050308; then
3520 if test -n "$ld_date"; then
3521 # If there was date string, but was earlier than 2005-03-08, fail
3523 elif test "$ld_vers_major" -lt 2; then
3525 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
3532 *-*-solaris2.1[1-9]*)
3534 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
3535 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
3538 # If using Sun as for COMDAT group as emitted by GCC, one needs at
3539 # least ld version 1.2267.
3540 if test "$ld_vers_major" -gt 1; then
3542 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
3544 elif test "$ld_vers_minor" -ge 2267; then
3549 # Assume linkers other than GNU ld don't support COMDAT group.
3555 # Allow overriding the automatic COMDAT group tests above.
3556 AC_ARG_ENABLE(comdat,
3557 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
3558 [comdat_group="$enable_comdat"])
3559 if test $comdat_group = no; then
3560 gcc_cv_as_comdat_group=no
3561 gcc_cv_as_comdat_group_percent=no
3562 gcc_cv_as_comdat_group_group=no
3564 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
3565 [`if test $gcc_cv_as_comdat_group = yes \
3566 || test $gcc_cv_as_comdat_group_percent = yes \
3567 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
3568 [Define 0/1 if your assembler and linker support COMDAT groups.])
3570 # Restrict this test to Solaris/x86: other targets define this statically.
3572 i?86-*-solaris2* | x86_64-*-solaris2*)
3573 AC_MSG_CHECKING(support for hidden thunks in linkonce sections)
3574 if test $in_tree_ld = yes || echo "$ld_ver" | grep GNU > /dev/null; then
3578 # Full support for hidden thunks in linkonce sections only appeared in
3579 # Solaris 11/OpenSolaris.
3580 *-*-solaris2.1[[1-9]]*)
3588 AC_MSG_RESULT($hidden_linkonce)
3589 AC_DEFINE_UNQUOTED(USE_HIDDEN_LINKONCE,
3590 [`if test $hidden_linkonce = yes; then echo 1; else echo 0; fi`],
3591 [Define 0/1 if your linker supports hidden thunks in linkonce sections.])
3595 gcc_GAS_CHECK_FEATURE([line table is_stmt support],
3600 .loc 1 1 0 is_stmt 1],,
3601 [AC_DEFINE(HAVE_GAS_LOC_STMT, 1,
3602 [Define if your assembler supports the .loc is_stmt sub-directive.])])
3604 gcc_GAS_CHECK_FEATURE([line table discriminator support],
3605 gcc_cv_as_discriminator,
3609 .loc 1 1 0 discriminator 1],,
3610 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
3611 [Define if your assembler supports the .loc discriminator sub-directive.])])
3613 # Catch the newlib flag of the same name so we can gate GCC features on it.
3614 AC_ARG_ENABLE(newlib-nano-formatted-io,
3615 [AS_HELP_STRING([--enable-newlib-nano-formatted-io], [Use nano version
3617 [case "${enableval}" in
3621 AC_MSG_ERROR([unknown newlib-nano-formatted-io setting $enableval])
3625 # Thread-local storage - the check is heavily parameterized.
3634 .section ".tdata","awT",@progbits
3637 ldq $27,__tls_get_addr($29) !literal!1
3638 lda $16,foo($29) !tlsgd!1
3639 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
3640 ldq $27,__tls_get_addr($29) !literal!2
3641 lda $16,foo($29) !tlsldm!2
3642 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
3643 ldq $1,foo($29) !gotdtprel
3644 ldah $2,foo($29) !dtprelhi
3645 lda $3,foo($2) !dtprello
3646 lda $4,foo($29) !dtprel
3647 ldq $1,foo($29) !gottprel
3648 ldah $2,foo($29) !tprelhi
3649 lda $3,foo($2) !tprello
3650 lda $4,foo($29) !tprel'
3653 tls_as_opt=--fatal-warnings
3657 add_s r0,r0, @foo@tpoff'
3661 cris-*-*|crisv32-*-*)
3663 .section ".tdata","awT",@progbits
3670 tls_as_opt=--fatal-warnings
3674 .section ".tdata","awT",@progbits
3686 .section ".tdata","awT",@progbits
3690 addil LT%foo-$tls_gdidx$,gp
3691 ldo RT%foo-$tls_gdidx$(%r1),%arg0
3694 addil LT%foo-$tls_ldidx$,gp
3696 ldo RT%foo-$tls_ldidx$(%r1),%arg0
3697 addil LR%foo-$tls_dtpoff$,%ret0
3698 ldo RR%foo-$tls_dtpoff$(%r1),%t1
3700 addil LT%foo-$tls_ieoff$,gp
3701 ldw RT%foo-$tls_ieoff$(%r1),%t2
3704 addil LR%foo-$tls_leoff$,%t1
3705 ldo RR%foo-$tls_leoff$(%r1),%t2'
3708 tls_as_opt=--fatal-warnings
3712 .section ".tdata","awT",%progbits
3723 i[34567]86-*-* | x86_64-*-*)
3725 i[34567]86-*-solaris2.* | x86_64-*-solaris2.*)
3732 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3734 .section .tdata,"awt",@progbits'
3739 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
3740 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
3744 .section ".tdata","awT",@progbits'
3748 tls_as_opt="--fatal-warnings"
3752 if test x$on_solaris = xyes; then
3754 yes) tls_as_opt="$tls_as_opt --32" ;;
3757 conftest_s="$conftest_s
3761 leal foo@tlsgd(,%ebx,1), %eax
3762 leal foo@tlsldm(%ebx), %eax
3763 leal foo@dtpoff(%eax), %edx
3764 movl foo@gottpoff(%ebx), %eax
3765 subl foo@gottpoff(%ebx), %eax
3766 addl foo@gotntpoff(%ebx), %eax
3767 movl foo@indntpoff, %eax
3768 movl \$foo@tpoff, %eax
3769 subl \$foo@tpoff, %eax
3770 leal foo@ntpoff(%ecx), %eax"
3773 if test x$on_solaris = xyes; then
3775 yes) tls_as_opt="$tls_as_opt --64" ;;
3776 no) tls_as_opt="$tls_as_opt -xarch=amd64" ;;
3779 conftest_s="$conftest_s
3783 leaq foo@tlsgd(%rip), %rdi
3784 leaq foo@tlsld(%rip), %rdi
3785 leaq foo@dtpoff(%rax), %rdx
3786 movq foo@gottpoff(%rip), %rax
3787 movq \$foo@tpoff, %rax"
3793 .section ".tdata","awT",@progbits
3796 addl r16 = @ltoff(@dtpmod(foo#)), gp
3797 addl r17 = @ltoff(@dtprel(foo#)), gp
3798 addl r18 = @ltoff(@tprel(foo#)), gp
3799 addl r19 = @dtprel(foo#), gp
3800 adds r21 = @dtprel(foo#), r13
3801 movl r23 = @dtprel(foo#)
3802 addl r20 = @tprel(foo#), gp
3803 adds r22 = @tprel(foo#), r13
3804 movl r24 = @tprel(foo#)'
3807 tls_as_opt=--fatal-warnings
3811 .section .tdata,"awT",@progbits
3815 addik r5,r20,x@TLSGD
3816 addik r5,r20,x@TLSLDM'
3819 tls_as_opt='--fatal-warnings'
3823 .section .tdata,"awT",@progbits
3827 addiu $4, $28, %tlsgd(x)
3828 addiu $4, $28, %tlsldm(x)
3829 lui $4, %dtprel_hi(x)
3830 addiu $4, $4, %dtprel_lo(x)
3831 lw $4, %gottprel(x)($28)
3832 lui $4, %tprel_hi(x)
3833 addiu $4, $4, %tprel_lo(x)'
3836 tls_as_opt='-32 --fatal-warnings'
3840 .section .tdata,"awT",@progbits
3845 move.l x@TLSGD(%a5),%a0
3846 move.l x@TLSLDM(%a5),%a0
3847 move.l x@TLSLDO(%a5),%a0
3848 move.l x@TLSIE(%a5),%a0
3849 move.l x@TLSLE(%a5),%a0'
3852 tls_as_opt='--fatal-warnings'
3856 .section ".tdata","awT",@progbits'
3859 tls_as_opt="--fatal-warnings"
3863 .section ".tdata","awT",%progbits
3867 add x0, x0, #:tlsgd_lo12:x
3872 tls_as_opt='--fatal-warnings'
3876 .section ".tdata","awT",@progbits
3879 l.movhi r3, tpoffha(foo)
3881 l.lwz r4, tpofflo(foo)(r3)'
3884 tls_as_opt=--fatal-warnings
3888 .extern __get_tpointer
3906 .section ".tdata","awT",@progbits
3914 addi 3,2,ld0@got@tlsgd
3920 addi 3,2,x1@got@tlsld
3926 addis 9,3,x2@dtprel@ha
3927 addi 9,9,x2@dtprel@l
3930 ld 9,x3@got@dtprel(2)
3936 tls_as_opt="-a64 --fatal-warnings"
3940 .section ".tdata","awT",@progbits
3948 addi 3,31,ld0@got@tlsgd
3950 addi 3,31,x1@got@tlsld
3953 addis 9,3,x2@dtprel@ha
3954 addi 9,9,x2@dtprel@l
3955 lwz 9,x3@got@tprel(31)
3958 addis 9,2,x2@tprel@ha
3959 addi 9,9,x2@tprel@l'
3962 tls_as_opt="-a32 --fatal-warnings"
3966 .section .tdata,"awT",@progbits
3970 call __tls_get_addr'
3973 tls_as_opt='--fatal-warnings'
3977 .section ".tdata","awT",@progbits
3986 l %r1,foo@GOTNTPOFF(%r12)
3987 l %r1,0(%r1):tls_load:foo
3988 bas %r14,0(%r1,%r13):tls_gdcall:foo
3989 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3992 tls_as_opt="-m31 --fatal-warnings"
3996 .section ".tdata","awT",@progbits
4004 lg %r1,foo@GOTNTPOFF(%r12)
4005 larl %r1,foo@INDNTPOFF
4006 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
4007 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
4010 tls_as_opt="-m64 -Aesame --fatal-warnings"
4012 sh-*-* | sh[123456789lbe]*-*-*)
4014 .section ".tdata","awT",@progbits
4024 tls_as_opt=--fatal-warnings
4028 sparc*-sun-solaris2.*)
4035 if test x$on_solaris = xyes && test x$gas_flag = xno; then
4037 .section ".tdata",#alloc,#write,#tls'
4042 .section ".tdata","awT",@progbits'
4045 tls_as_opt="-32 --fatal-warnings"
4047 conftest_s="$conftest_s
4050 sethi %tgd_hi22(foo), %o0
4051 add %o0, %tgd_lo10(foo), %o1
4052 add %l7, %o1, %o0, %tgd_add(foo)
4053 call __tls_get_addr, %tgd_call(foo)
4054 sethi %tldm_hi22(foo), %l1
4055 add %l1, %tldm_lo10(foo), %l2
4056 add %l7, %l2, %o0, %tldm_add(foo)
4057 call __tls_get_addr, %tldm_call(foo)
4058 sethi %tldo_hix22(foo), %l3
4059 xor %l3, %tldo_lox10(foo), %l4
4060 add %o0, %l4, %l5, %tldo_add(foo)
4061 sethi %tie_hi22(foo), %o3
4062 add %o3, %tie_lo10(foo), %o3
4063 ld [%l7 + %o3], %o2, %tie_ld(foo)
4064 add %g7, %o2, %o4, %tie_add(foo)
4065 sethi %tle_hix22(foo), %l1
4066 xor %l1, %tle_lox10(foo), %o5
4067 ld [%g7 + %o5], %o1"
4071 .section ".tdata","awT",@progbits
4074 addli r0, zero, tls_gd(foo)
4075 auli r0, zero, tls_gd_ha16(foo)
4076 addli r0, r0, tls_gd_lo16(foo)
4078 addli r0, zero, tls_ie(foo)
4079 auli r0, r0, tls_ie_ha16(foo)
4080 addli r0, r0, tls_ie_lo16(foo)'
4083 tls_as_opt="--fatal-warnings"
4087 .section ".tdata","awT",@progbits
4090 shl16insli r0, zero, hw0_last_tls_gd(foo)
4091 shl16insli r0, zero, hw1_last_tls_gd(foo)
4092 shl16insli r0, r0, hw0_tls_gd(foo)
4094 shl16insli r0, zero, hw1_last_tls_ie(foo)
4095 shl16insli r0, r0, hw0_tls_ie(foo)'
4098 tls_as_opt="--fatal-warnings"
4102 .section ".tdata","awT",@progbits
4105 movi a8, foo@TLSFUNC
4106 movi a10, foo@TLSARG
4107 callx8.tls a8, foo@TLSCALL'
4114 if test "x$enable_tls" = xno ; then
4115 : # TLS explicitly disabled.
4116 elif test "x$enable_tls" = xyes ; then
4117 set_have_as_tls=yes # TLS explicitly enabled.
4118 elif test -z "$tls_first_major"; then
4119 : # If we don't have a check, assume no support.
4121 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
4122 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
4123 [set_have_as_tls=yes])
4125 if test $set_have_as_tls = yes ; then
4126 AC_DEFINE(HAVE_AS_TLS, 1,
4127 [Define if your assembler and linker support thread-local storage.])
4130 # Target-specific assembler checks.
4132 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
4133 gcc_cv_ld_static_dynamic=no
4134 gcc_cv_ld_static_option='-Bstatic'
4135 gcc_cv_ld_dynamic_option='-Bdynamic'
4136 if test $in_tree_ld = yes ; then
4137 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
4138 gcc_cv_ld_static_dynamic=yes
4140 elif test x$gcc_cv_ld != x; then
4141 # Check if linker supports -Bstatic/-Bdynamic option
4142 if $gcc_cv_ld --help 2>&1 | grep -- -Bstatic > /dev/null \
4143 && $gcc_cv_ld --help 2>&1 | grep -- -Bdynamic > /dev/null; then
4144 gcc_cv_ld_static_dynamic=yes
4147 # AIX ld uses -b flags
4148 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
4149 gcc_cv_ld_static_dynamic=yes
4150 gcc_cv_ld_static_option="-bstatic"
4151 gcc_cv_ld_dynamic_option="-bdynamic"
4153 # HP-UX ld uses -a flags to select between shared and archive.
4155 if test x"$gnu_ld" = xno; then
4156 gcc_cv_ld_static_dynamic=yes
4157 gcc_cv_ld_static_option="-aarchive_shared"
4158 gcc_cv_ld_dynamic_option="-adefault"
4161 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
4163 gcc_cv_ld_static_dynamic=yes
4168 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
4169 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
4170 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
4171 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
4172 [Define to the linker option to disable use of shared objects.])
4173 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
4174 [Define to the linker option to enable use of shared objects.])
4176 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
4178 AC_MSG_CHECKING(linker --version-script option)
4179 gcc_cv_ld_version_script=no
4180 ld_version_script_option=''
4181 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
4182 gcc_cv_ld_version_script=yes
4183 ld_version_script_option='--version-script'
4184 elif test x$gcc_cv_ld != x; then
4186 # Solaris 2 ld always supports -M. It also supports a subset of
4187 # --version-script since Solaris 11.4, but requires
4188 # -z gnu-version-script-compat to activate.
4190 gcc_cv_ld_version_script=yes
4191 ld_version_script_option='-M'
4195 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
4196 AC_MSG_RESULT($gcc_cv_ld_version_script)
4197 AC_SUBST(ld_version_script_option)
4199 AC_MSG_CHECKING(linker soname option)
4201 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
4202 gcc_cv_ld_soname=yes
4203 ld_soname_option='-soname'
4204 elif test x$gcc_cv_ld != x; then
4207 gcc_cv_ld_soname=yes
4208 ld_soname_option='-install_name'
4210 # Solaris 2 ld always supports -h. It also supports --soname for GNU
4211 # ld compatiblity since some Solaris 10 update.
4213 gcc_cv_ld_soname=yes
4214 ld_soname_option='-h'
4218 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
4219 AC_MSG_RESULT($gcc_cv_ld_soname)
4220 AC_SUBST(ld_soname_option)
4222 if test x"$demangler_in_ld" = xyes; then
4223 AC_MSG_CHECKING(linker --demangle support)
4224 gcc_cv_ld_demangle=no
4225 if test $in_tree_ld = yes; then
4226 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
4227 gcc_cv_ld_demangle=yes
4229 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
4230 # Check if the GNU linker supports --demangle option
4231 if $gcc_cv_ld --help 2>&1 | grep no-demangle > /dev/null; then
4232 gcc_cv_ld_demangle=yes
4235 if test x"$gcc_cv_ld_demangle" = xyes; then
4236 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
4237 [Define if your linker supports --demangle option.])
4239 AC_MSG_RESULT($gcc_cv_ld_demangle)
4242 AC_MSG_CHECKING(linker plugin support)
4244 if test -f liblto_plugin.la; then
4245 save_ld_ver="$ld_ver"
4246 save_ld_vers_major="$ld_vers_major"
4247 save_ld_vers_minor="$ld_vers_minor"
4248 save_ld_is_gold="$ld_is_gold"
4252 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
4254 # FIXME: ld_is_gold?
4255 ld_vers_major="$gcc_cv_gld_major_version"
4256 ld_vers_minor="$gcc_cv_gld_minor_version"
4258 # Determine plugin linker version.
4259 # FIXME: Partial duplicate from above, generalize.
4261 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
4262 if echo "$ld_ver" | grep GNU > /dev/null; then
4263 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
4265 ld_vers=`echo $ld_ver | sed -n \
4266 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
4268 ld_vers=`echo $ld_ver | sed -n \
4269 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
4271 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
4272 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
4277 # Determine plugin support.
4278 if echo "$ld_ver" | grep GNU > /dev/null; then
4279 # Require GNU ld or gold 2.21+ for plugin support by default.
4280 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
4282 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
4283 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
4288 ld_ver="$save_ld_ver"
4289 ld_vers_major="$save_ld_vers_major"
4290 ld_vers_minor="$save_ld_vers_minor"
4291 ld_is_gold="$save_ld_is_gold"
4293 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
4294 [Define to the level of your linker's plugin support.])
4295 AC_MSG_RESULT($gcc_cv_lto_plugin)
4297 # Target OS-specific assembler checks.
4299 case "$target_os" in
4301 gcc_GAS_CHECK_FEATURE([-mmacosx-version-min option],
4302 gcc_cv_as_mmacosx_version_min,,
4303 [-mmacosx-version-min=10.1], [.text],,
4304 [AC_DEFINE(HAVE_AS_MMACOSX_VERSION_MIN_OPTION, 1,
4305 [Define if your Mac OS X assembler supports the -mmacos-version-min option.])])
4309 # Target CPU-specific assembler checks.
4313 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,,
4314 [-mabi=lp64], [.text],,,)
4315 if test x$gcc_cv_as_aarch64_mabi = xyes; then
4316 AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
4317 [Define if your assembler supports the -mabi option.])
4319 if test x$with_abi = xilp32; then
4320 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
4321 Upgrade the Assembler.])
4323 if test x"$with_multilib_list" = xdefault; then
4324 TM_MULTILIB_CONFIG=lp64
4326 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
4327 for aarch64_multilib in ${aarch64_multilibs}; do
4328 case ${aarch64_multilib} in
4330 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
4331 Upgrade the Assembler.])
4339 # Check if we have binutils support for relocations types needed by -fpic
4340 gcc_GAS_CHECK_FEATURE([-fpic relocs], gcc_cv_as_aarch64_picreloc,,,
4343 ldr x0, [[x2, #:gotpage_lo15:globalsym]]
4344 ],,[AC_DEFINE(HAVE_AS_SMALL_PIC_RELOCS, 1,
4345 [Define if your assembler supports relocs needed by -fpic.])])
4346 # Enable Branch Target Identification Mechanism and Return Address
4347 # Signing by default.
4348 AC_ARG_ENABLE(standard-branch-protection,
4350 AS_HELP_STRING([--enable-standard-branch-protection],
4351 [enable Branch Target Identification Mechanism and Return Address Signing by default for AArch64])
4352 AS_HELP_STRING([--disable-standard-branch-protection],
4353 [disable Branch Target Identification Mechanism and Return Address Signing by default for AArch64])
4358 tm_defines="${tm_defines} TARGET_ENABLE_BTI=1 TARGET_ENABLE_PAC_RET=1"
4363 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-standard-branch-protection.\
4364 Valid choices are 'yes' and 'no'.])
4369 # Enable default workaround for AArch64 Cortex-A53 erratum 835769.
4370 AC_ARG_ENABLE(fix-cortex-a53-835769,
4372 AS_HELP_STRING([--enable-fix-cortex-a53-835769],
4373 [enable workaround for AArch64 Cortex-A53 erratum 835769 by default])
4374 AS_HELP_STRING([--disable-fix-cortex-a53-835769],
4375 [disable workaround for AArch64 Cortex-A53 erratum 835769 by default])
4380 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1"
4385 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\
4386 Valid choices are 'yes' and 'no'.])
4392 # Enable default workaround for AArch64 Cortex-A53 erratum 843419.
4393 AC_ARG_ENABLE(fix-cortex-a53-843419,
4395 AS_HELP_STRING([--enable-fix-cortex-a53-843419],
4396 [enable workaround for AArch64 Cortex-A53 erratum 843419 by default])
4397 AS_HELP_STRING([--disable-fix-cortex-a53-843419],
4398 [disable workaround for AArch64 Cortex-A53 erratum 843419 by default])
4403 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1"
4408 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\
4409 Valid choices are 'yes' and 'no'.])
4417 # All TARGET_ABI_OSF targets.
4418 alpha*-*-linux* | alpha*-*-*bsd*)
4419 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4420 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
4423 extbl $3, $2, $3 !lituse_bytoff!1
4424 ldq $2, a($29) !literal!1
4425 ldq $4, b($29) !literal!2
4426 ldq_u $3, 0($2) !lituse_base!1
4427 ldq $27, f($29) !literal!5
4428 jsr $26, ($27), f !lituse_jsr!5
4429 ldah $29, 0($26) !gpdisp!3
4430 lda $0, c($29) !gprel
4431 ldah $1, d($29) !gprelhigh
4432 lda $1, d($1) !gprellow
4433 lda $29, 0($29) !gpdisp!3],,
4434 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
4435 [Define if your assembler supports explicit relocations.])])
4436 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
4437 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
4440 ldq $27, a($29) !literal!1
4441 jsr $26, ($27), a !lituse_jsrdirect!1],,
4442 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
4443 [Define if your assembler supports the lituse_jsrdirect relocation.])])
4447 gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax,,
4448 [--mlink-relax], [.text],,
4449 [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1,
4450 [Define if your avr assembler supports --mlink-relax option.])])
4452 gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,,
4454 [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1,
4455 [Define if your avr assembler supports -mrmw option.])])
4457 gcc_GAS_CHECK_FEATURE([__gcc_isr pseudo instruction],
4458 gcc_cv_as_avr_mgccisr,,
4464 [AC_DEFINE(HAVE_AS_AVR_MGCCISR_OPTION, 1,
4465 [Define if your avr assembler supports -mgcc-isr option.])])
4467 # Check how default linker description file implements .rodata for
4468 # avrxmega3 (PR21472). avr-gcc assumes .rodata is *not* loaded to
4469 # RAM so avr-gcc skips __do_copy_data for .rodata objects.
4470 AC_MSG_CHECKING(binutils for avrxmega3 .rodata support)
4471 cat > conftest.s <<EOF
4472 .section .rodata,"a",@progbits
4474 ;; avr-nm should print "... R xxvaryy", not "... D xxvaryy".
4479 AC_TRY_COMMAND([$gcc_cv_as -mmcu=avrxmega3 conftest.s -o conftest.o])
4480 AC_TRY_COMMAND([$gcc_cv_ld -mavrxmega3 conftest.o -o conftest.elf])
4481 AC_TRY_COMMAND([$gcc_cv_nm conftest.elf > conftest.nm])
4482 if test -s conftest.nm
4484 if grep ' R xxvaryy' conftest.nm > /dev/null; then
4486 AC_DEFINE(HAVE_LD_AVR_AVRXMEGA3_RODATA_IN_FLASH, 1,
4487 [Define if your default avr linker script for avrxmega3 leaves .rodata in flash.])
4489 AC_MSG_RESULT(no: avrxmega3 .rodata located in RAM)
4490 echo "$as_me: nm output was" >&AS_MESSAGE_LOG_FD
4491 cat conftest.nm >&AS_MESSAGE_LOG_FD
4492 avr_ld_ver="`$gcc_cv_ld -v | sed -e 's:^.* ::'`"
4493 AC_MSG_WARN([[support for avrxmega3 .rodata in flash needs Binutils 2.29 or higher (have $avr_ld_ver)]])
4496 AC_MSG_RESULT(test failed)
4497 echo "$as_me: failed program was" >&AS_MESSAGE_LOG_FD
4498 cat conftest.s >&AS_MESSAGE_LOG_FD
4499 AC_MSG_WARN([[see `config.log' for details]])
4501 rm -f conftest.s conftest.o conftest.elf conftest.nm
4505 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
4506 gcc_cv_as_cris_no_mul_bug,[2,15,91],
4507 [-no-mul-bug-abort], [.text],,
4508 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
4509 [Define if your assembler supports the -no-mul-bug-abort option.])])
4513 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
4515 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
4516 [Define if your assembler supports -relax option.])])
4518 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
4519 gcc_cv_as_sparc_gotdata_op,,
4526 sethi %gdop_hix22(foo), %g1
4527 xor %g1, %gdop_lox10(foo), %g1
4528 ld [[%l7 + %g1]], %g2, %gdop(foo)],
4529 [if test x$gcc_cv_ld != x \
4530 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4531 if test x$gcc_cv_objdump != x; then
4532 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
4533 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
4534 gcc_cv_as_sparc_gotdata_op=no
4536 gcc_cv_as_sparc_gotdata_op=yes
4541 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
4542 [Define if your assembler and linker support GOTDATA_OP relocs.])])
4544 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
4545 gcc_cv_as_sparc_ua_pcrel,,
4553 .uaword %r_disp32(foo)],
4554 [if test x$gcc_cv_ld != x \
4555 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4556 gcc_cv_as_sparc_ua_pcrel=yes
4559 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
4560 [Define if your assembler and linker support unaligned PC relative relocs.])
4562 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
4563 gcc_cv_as_sparc_ua_pcrel_hidden,,
4568 .uaword %r_disp32(foo)
4569 .byte 0x32, 0x33, 0x34
4574 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4575 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
4576 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
4577 | grep ' 31000000 07323334' > /dev/null 2>&1; then
4578 if $gcc_cv_objdump -R conftest 2> /dev/null \
4579 | grep 'DISP32' > /dev/null 2>&1; then
4582 gcc_cv_as_sparc_ua_pcrel_hidden=yes
4586 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
4587 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
4588 ]) # unaligned pcrel relocs
4590 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
4591 gcc_cv_as_sparc_offsetable_lo10,,
4594 or %g1, %lo(ab) + 12, %g1
4595 or %g1, %lo(ab + 12), %g1],
4596 [if test x$gcc_cv_objdump != x \
4597 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
4598 | grep ' 82106000 82106000' > /dev/null 2>&1; then
4599 gcc_cv_as_sparc_offsetable_lo10=yes
4601 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
4602 [Define if your assembler supports offsetable %lo().])])
4604 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
4605 gcc_cv_as_sparc_fmaf,,
4608 .register %g2, #scratch
4609 .register %g3, #scratch
4611 fmaddd %f0, %f2, %f4, %f6
4612 addxccc %g1, %g2, %g3
4613 fsrl32 %f2, %f4, %f8
4614 fnaddd %f10, %f12, %f14],,
4615 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
4616 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
4618 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
4619 gcc_cv_as_sparc_sparc4,,
4622 .register %g2, #scratch
4623 .register %g3, #scratch
4626 1: cwbneg %g2, %g3, 1f
4629 aes_kexpand0 %f4, %f6, %f8
4630 des_round %f38, %f40, %f42, %f44
4631 camellia_f %f54, %f56, %f58, %f60
4632 kasumi_fi_xor %f46, %f48, %f50, %f52],,
4633 [AC_DEFINE(HAVE_AS_SPARC4, 1,
4634 [Define if your assembler supports SPARC4 instructions.])])
4636 gcc_GAS_CHECK_FEATURE([SPARC5 and VIS 4.0 instructions],
4637 gcc_cv_as_sparc_sparc5,,
4640 .register %g2, #scratch
4641 .register %g3, #scratch
4644 fpadd8 %f0, %f2, %f4],,
4645 [AC_DEFINE(HAVE_AS_SPARC5_VIS4, 1,
4646 [Define if your assembler supports SPARC5 and VIS 4.0 instructions.])])
4648 gcc_GAS_CHECK_FEATURE([SPARC6 instructions],
4649 gcc_cv_as_sparc_sparc6,,
4652 .register %g2, #scratch
4653 .register %g3, #scratch
4656 fpsll64x %f0, %f2, %f4],,
4657 [AC_DEFINE(HAVE_AS_SPARC6, 1,
4658 [Define if your assembler supports SPARC6 instructions.])])
4660 gcc_GAS_CHECK_FEATURE([LEON instructions],
4661 gcc_cv_as_sparc_leon,,
4664 .register %g2, #scratch
4665 .register %g3, #scratch
4669 casa [[%g2]] 0xb, %g3, %g1],,
4670 [AC_DEFINE(HAVE_AS_LEON, 1,
4671 [Define if your assembler supports LEON instructions.])])
4675 i[34567]86-*-* | x86_64-*-*)
4679 # Full C++ conformance when using a shared libstdc++-v3 requires some
4680 # support from the Cygwin DLL, which in more recent versions exports
4681 # wrappers to aid in interposing and redirecting operators new, delete,
4682 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
4683 # are configuring for a version of Cygwin that exports the wrappers.
4684 if test x$host = x$target && test x$host_cpu = xi686; then
4685 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
4687 # Can't check presence of libc functions during cross-compile, so
4688 # we just have to assume we're building for an up-to-date target.
4689 gcc_ac_cygwin_dll_wrappers=yes
4691 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
4692 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
4693 [Define if you want to generate code by default that assumes that the
4694 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
4697 cygwin* | pe | mingw32*)
4698 # Recent binutils allows the three-operand form of ".comm" on PE. This
4699 # definition is used unconditionally to initialise the default state of
4700 # the target option variable that governs usage of the feature.
4701 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
4702 [2,19,52],,[.comm foo,1,32])
4703 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
4704 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
4705 [Define if your assembler supports specifying the alignment
4706 of objects allocated using the GAS .comm command.])
4707 # Used for DWARF 2 in PE
4708 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
4709 gcc_cv_as_ix86_pe_secrel32,
4715 [if test x$gcc_cv_ld != x \
4716 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
4717 gcc_cv_as_ix86_pe_secrel32=yes
4720 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
4721 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
4722 # Test if the assembler supports the extended form of the .section
4723 # directive that specifies section alignment. LTO support uses this,
4724 # but normally only after installation, so we warn but don't fail the
4725 # configure if LTO is enabled but the assembler does not support it.
4726 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
4727 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
4728 if test x$gcc_cv_as_section_has_align != xyes; then
4729 case ",$enable_languages," in
4731 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
4738 gcc_GAS_CHECK_FEATURE([-xbrace_comment], gcc_cv_as_ix86_xbrace_comment,,
4739 [-xbrace_comment=no], [.text],,
4740 [AC_DEFINE(HAVE_AS_XBRACE_COMMENT_OPTION, 1,
4741 [Define if your assembler supports -xbrace_comment option.])])
4743 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
4744 gcc_cv_as_ix86_filds,,,
4745 [filds (%ebp); fists (%ebp)],,
4746 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
4747 [Define if your assembler uses filds and fists mnemonics.])])
4749 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
4750 gcc_cv_as_ix86_fildq,,,
4751 [fildq (%ebp); fistpq (%ebp)],,
4752 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
4753 [Define if your assembler uses fildq and fistq mnemonics.])])
4755 gcc_GAS_CHECK_FEATURE([cmov syntax],
4756 gcc_cv_as_ix86_cmov_sun_syntax,,,
4757 [cmovl.l %edx, %eax],,
4758 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
4759 [Define if your assembler supports the Sun syntax for cmov.])])
4761 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
4762 gcc_cv_as_ix86_ffreep,,,
4764 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
4765 [Define if your assembler supports the ffreep mnemonic.])])
4767 gcc_GAS_CHECK_FEATURE([.quad directive],
4768 gcc_cv_as_ix86_quad,,,
4770 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
4771 [Define if your assembler supports the .quad directive.])])
4773 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
4774 gcc_cv_as_ix86_sahf,,,
4777 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
4778 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
4780 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
4781 gcc_cv_as_ix86_interunit_movq,,,
4785 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
4786 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
4787 [Define if your assembler supports interunit movq mnemonic.])
4789 gcc_GAS_CHECK_FEATURE([hle prefixes],
4790 gcc_cv_as_ix86_hle,,,
4791 [lock xacquire cmpxchg %esi, (%ecx)],,
4792 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
4793 [Define if your assembler supports HLE prefixes.])])
4795 gcc_GAS_CHECK_FEATURE([swap suffix],
4796 gcc_cv_as_ix86_swap,,,
4797 [movl.s %esp, %ebp],,
4798 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
4799 [Define if your assembler supports the swap suffix.])])
4801 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
4802 gcc_cv_as_ix86_diff_sect_delta,,,
4810 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
4811 [Define if your assembler supports the subtraction of symbols in different sections.])])
4813 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
4814 gcc_cv_as_ix86_rep_lock_prefix,,,
4820 lock addl %edi, (%eax,%esi)
4821 lock orl $0, (%esp)],,
4822 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
4823 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
4825 gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
4826 gcc_cv_as_ix86_ud2,,,
4828 [AC_DEFINE(HAVE_AS_IX86_UD2, 1,
4829 [Define if your assembler supports the 'ud2' mnemonic.])])
4831 # Enforce 32-bit output with gas and gld.
4832 if test x$gas = xyes; then
4833 as_ix86_gas_32_opt="--32"
4835 if echo "$ld_ver" | grep GNU > /dev/null; then
4836 if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then
4837 ld_ix86_gld_32_opt="-melf_i386_sol2"
4839 ld_ix86_gld_32_opt="-melf_i386"
4843 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
4844 gcc_cv_as_ix86_tlsgdplt,,
4845 [$as_ix86_gas_32_opt],
4846 [call tls_gd@tlsgdplt],
4847 [if test x$gcc_cv_ld != x \
4848 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4849 gcc_cv_as_ix86_tlsgdplt=yes
4852 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
4853 [Define if your assembler and linker support @tlsgdplt.])])
4856 .section .tdata,"aw'$tls_section_flag'",@progbits
4858 .section .text,"ax",@progbits
4859 call tls_ld@tlsldmplt'
4861 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
4862 gcc_cv_as_ix86_tlsldmplt,,
4863 [$as_ix86_gas_32_opt],
4865 [if test x$gcc_cv_ld != x \
4866 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4867 gcc_cv_as_ix86_tlsldmplt=yes
4870 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT,
4871 [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`],
4872 [Define to 1 if your assembler and linker support @tlsldmplt.])
4875 .section .text,"ax",@progbits
4877 .type _start, @function
4879 leal value@tlsldm(%ebx), %eax
4880 call ___tls_get_addr@plt
4882 .section .tdata,"aw'$tls_section_flag'",@progbits
4883 .type value, @object
4885 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc],
4886 gcc_cv_as_ix86_tlsldm,,
4887 [$as_ix86_gas_32_opt],
4889 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4890 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then
4891 if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \
4892 || dis conftest 2>/dev/null | grep nop > /dev/null; then
4893 gcc_cv_as_ix86_tlsldm=yes
4897 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM,
4898 [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`],
4899 [Define to 1 if your assembler and linker support @tlsldm.])
4910 gcc_GAS_CHECK_FEATURE([R_386_GOT32X reloc],
4911 gcc_cv_as_ix86_got32x,,
4912 [$as_ix86_gas_32_opt],
4914 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4915 && test x$gcc_cv_readelf != x \
4916 && $gcc_cv_readelf --relocs --wide conftest.o 2>&1 \
4917 | grep R_386_GOT32X > /dev/null 2>&1 \
4918 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4919 if $gcc_cv_objdump -dw conftest 2>&1 \
4920 | grep 0xffffff > /dev/null 2>&1; then
4921 gcc_cv_as_ix86_got32x=no
4923 gcc_cv_as_ix86_got32x=yes
4927 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_GOT32X,
4928 [`if test x"$gcc_cv_as_ix86_got32x" = xyes; then echo 1; else echo 0; fi`],
4929 [Define 0/1 if your assembler and linker support @GOT.])
4931 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
4932 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],
4933 [$as_ix86_gas_32_opt],
4939 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
4940 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
4941 [Define true if the assembler supports '.long foo@GOTOFF'.])
4944 .section .text,"ax",@progbits
4946 .type _start, @function
4948 leal ld@tlsldm(%ecx), %eax
4949 call *___tls_get_addr@GOT(%ecx)
4950 leal gd@tlsgd(%ecx), %eax
4951 call *___tls_get_addr@GOT(%ecx)
4953 .section .tdata,"aw'$tls_section_flag'",@progbits
4961 gcc_GAS_CHECK_FEATURE([calling ___tls_get_addr via GOT],
4962 gcc_cv_as_ix86_tls_get_addr_via_got,,
4963 [$as_ix86_gas_32_opt],
4965 [if test x$gcc_cv_ld != x \
4966 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4967 gcc_cv_as_ix86_tls_get_addr_via_got=yes
4970 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLS_GET_ADDR_GOT,
4971 [`if test x"$gcc_cv_as_ix86_tls_get_addr_via_got" = xyes; then echo 1; else echo 0; fi`],
4972 [Define 0/1 if your assembler and linker support calling ___tls_get_addr via GOT.])
4976 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
4977 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
4979 addl r15 = @ltoffx(x#), gp
4981 ld8.mov r16 = [[r15]], x#
4983 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
4984 [Define if your assembler supports ltoffx and ldxmov relocations.])])
4992 gcc_GAS_CHECK_FEATURE([.machine directive support],
4993 gcc_cv_as_machine_directive,,,
4994 [ .machine ppc7400])
4995 if test x$gcc_cv_as_machine_directive != xyes; then
4996 echo "*** This target requires an assembler supporting \".machine\"" >&2
4997 echo you can get it from: https://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
4998 test x$build = x$target && exit 1
5004 *-*-aix*) conftest_s=' .machine "pwr5"
5007 *-*-darwin*) conftest_s=' .text
5009 *) conftest_s=' .machine power4
5014 gcc_GAS_CHECK_FEATURE([mfcr field support],
5015 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
5017 [AC_DEFINE(HAVE_AS_MFCRF, 1,
5018 [Define if your assembler supports mfcr field.])])
5021 *-*-aix*) conftest_s=' .csect .text[[PR]]
5023 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
5027 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
5028 *) conftest_s=' .text
5030 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
5033 gcc_GAS_CHECK_FEATURE([rel16 relocs],
5034 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
5036 [AC_DEFINE(HAVE_AS_REL16, 1,
5037 [Define if your assembler supports R_PPC_REL16 relocs.])])
5040 *-*-aix*) conftest_s=' .machine "pwr7"
5043 *) conftest_s=' .machine power7
5048 gcc_GAS_CHECK_FEATURE([vector-scalar support],
5049 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
5051 [AC_DEFINE(HAVE_AS_VSX, 1,
5052 [Define if your assembler supports VSX instructions.])])
5054 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5055 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
5056 [.gnu_attribute 4,1],,
5057 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5058 [Define if your assembler supports .gnu_attribute.])])
5060 gcc_GAS_CHECK_FEATURE([prologue entry point marker support],
5061 gcc_cv_as_powerpc_entry_markers, [2,26,0],-a64 --fatal-warnings,
5062 [ .reloc .,R_PPC64_ENTRY; nop],,
5063 [AC_DEFINE(HAVE_AS_ENTRY_MARKERS, 1,
5064 [Define if your assembler supports the R_PPC64_ENTRY relocation.])])
5066 gcc_GAS_CHECK_FEATURE([plt sequence marker support],
5067 gcc_cv_as_powerpc_pltseq_markers, [2,31,0],-a32 --fatal-warnings,
5068 [ .reloc .,R_PPC_PLTSEQ; nop],,
5069 [AC_DEFINE(HAVE_AS_PLTSEQ, 1,
5070 [Define if your assembler supports R_PPC*_PLTSEQ relocations.])])
5074 gcc_GAS_CHECK_FEATURE([AIX .ref support],
5075 gcc_cv_as_aix_ref, [2,21,0],,
5076 [ .csect stuff[[rw]]
5082 [AC_DEFINE(HAVE_AS_REF, 1,
5083 [Define if your assembler supports .ref])])
5085 gcc_GAS_CHECK_FEATURE([AIX DWARF location lists section support],
5086 gcc_cv_as_aix_dwloc, [2,21,0],,
5091 [AC_DEFINE(HAVE_XCOFF_DWARF_EXTRAS, 1,
5092 [Define if your assembler supports AIX debug frame section label reference.])])
5098 gcc_GAS_CHECK_FEATURE([explicit relocation support],
5099 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
5100 [ lw $4,%gp_rel(foo)($4)],,
5101 [if test x$target_cpu_default = x
5102 then target_cpu_default=MASK_EXPLICIT_RELOCS
5103 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
5106 gcc_GAS_CHECK_FEATURE([-mno-shared support],
5107 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
5108 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
5109 [Define if the assembler understands -mno-shared.])])
5111 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5112 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
5113 [.gnu_attribute 4,1],,
5114 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5115 [Define if your assembler supports .gnu_attribute.])])
5117 gcc_GAS_CHECK_FEATURE([.module support],
5118 gcc_cv_as_mips_dot_module,,[-32],
5121 [AC_DEFINE(HAVE_AS_DOT_MODULE, 1,
5122 [Define if your assembler supports .module.])])
5123 if test x$gcc_cv_as_mips_dot_module = xno \
5124 && test x$with_fp_32 != x; then
5126 [Requesting --with-fp-32= requires assembler support for .module.])
5129 gcc_GAS_CHECK_FEATURE([.micromips support],
5130 gcc_cv_as_micromips_support,,[--fatal-warnings],
5132 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
5133 [Define if your assembler supports the .set micromips directive])])
5135 gcc_GAS_CHECK_FEATURE([.dtprelword support],
5136 gcc_cv_as_mips_dtprelword, [2,18,0],,
5137 [.section .tdata,"awT",@progbits
5141 .dtprelword x+0x8000],,
5142 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
5143 [Define if your assembler supports .dtprelword.])])
5145 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
5146 gcc_cv_as_mips_dspr1_mult,,,
5156 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
5157 [Define if your assembler supports DSPR1 mult.])])
5159 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
5160 gcc_cv_as_ld_jalr_reloc=no
5161 if test $gcc_cv_as_mips_explicit_relocs = yes; then
5162 if test $in_tree_ld = yes ; then
5163 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
5164 && test $in_tree_ld_is_elf = yes; then
5165 gcc_cv_as_ld_jalr_reloc=yes
5167 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
5168 echo ' .ent x' > conftest.s
5169 echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s
5170 echo ' lw $25,%call16(y)($28)' >> conftest.s
5171 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
5172 echo '1: jalr $25' >> conftest.s
5173 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
5174 echo '1: jalr $25' >> conftest.s
5175 echo ' .end x' >> conftest.s
5176 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
5177 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
5178 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
5179 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
5180 gcc_cv_as_ld_jalr_reloc=yes
5186 if test $gcc_cv_as_ld_jalr_reloc = yes; then
5187 if test x$target_cpu_default = x; then
5188 target_cpu_default=MASK_RELAX_PIC_CALLS
5190 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
5193 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
5195 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
5196 [gcc_cv_ld_mips_personality_relaxation],
5197 [gcc_cv_ld_mips_personality_relaxation=no
5198 if test $in_tree_ld = yes ; then
5199 if test "$gcc_cv_gld_major_version" -eq 2 \
5200 -a "$gcc_cv_gld_minor_version" -ge 21 \
5201 -o "$gcc_cv_gld_major_version" -gt 2; then
5202 gcc_cv_ld_mips_personality_relaxation=yes
5204 elif test x$gcc_cv_as != x \
5205 -a x$gcc_cv_ld != x \
5206 -a x$gcc_cv_readelf != x ; then
5207 cat > conftest.s <<EOF
5209 .cfi_personality 0x80,indirect_ptr
5216 .section .data,"aw",@progbits
5220 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
5221 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
5222 if $gcc_cv_readelf -d conftest 2>&1 \
5223 | grep TEXTREL > /dev/null 2>&1; then
5225 elif $gcc_cv_readelf --relocs conftest 2>&1 \
5226 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
5229 gcc_cv_ld_mips_personality_relaxation=yes
5233 rm -f conftest.s conftest.o conftest])
5234 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
5235 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
5236 [Define if your linker can relax absolute .eh_frame personality
5237 pointers into PC-relative form.])
5240 gcc_GAS_CHECK_FEATURE([-mnan= support],
5241 gcc_cv_as_mips_nan,,
5243 [AC_DEFINE(HAVE_AS_NAN, 1,
5244 [Define if the assembler understands -mnan=.])])
5245 if test x$gcc_cv_as_mips_nan = xno \
5246 && test x$with_nan != x; then
5248 [Requesting --with-nan= requires assembler support for -mnan=])
5252 # Earlier GAS versions generically support .gnu_attribute, but the
5253 # msp430 assembler will not do anything with it.
5254 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5255 gcc_cv_as_msp430_gnu_attribute, [2,33,50],,
5256 [.gnu_attribute 4,1],,
5257 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5258 [Define if your assembler supports .gnu_attribute.])])
5259 gcc_GAS_CHECK_FEATURE([.mspabi_attribute support],
5260 gcc_cv_as_msp430_mspabi_attribute, [2,33,50],,
5261 [.mspabi_attribute 4,2],,
5262 [AC_DEFINE(HAVE_AS_MSPABI_ATTRIBUTE, 1,
5263 [Define if your assembler supports .mspabi_attribute.])])
5264 if test x$enable_newlib_nano_formatted_io = xyes; then
5265 AC_DEFINE(HAVE_NEWLIB_NANO_FORMATTED_IO, 1, [Define if GCC has been
5266 configured with --enable-newlib-nano-formatted-io.])
5270 # Versions 2.33 and earlier lacked support for the %gotoff relocation
5271 # syntax that is documented in the ABI specification.
5272 gcc_GAS_CHECK_FEATURE([support for %gotoff relocations in constant data],
5273 gcc_cv_as_nios2_gotoff_relocation,,,
5276 .long %gotoff(foo)],,
5277 [AC_DEFINE(HAVE_AS_NIOS2_GOTOFF_RELOCATION, 1,
5278 [Define if your assembler supports %gotoff relocation syntax.])])
5281 gcc_GAS_CHECK_FEATURE([.attribute support],
5282 gcc_cv_as_riscv_attribute, [2,32,0],,
5283 [.attribute stack_align,4],,
5284 [AC_DEFINE(HAVE_AS_RISCV_ATTRIBUTE, 1,
5285 [Define if your assembler supports .attribute.])])
5286 gcc_GAS_CHECK_FEATURE([-misa-spec= support],
5287 gcc_cv_as_riscv_isa_spec,,
5289 [AC_DEFINE(HAVE_AS_MISA_SPEC, 1,
5290 [Define if the assembler understands -misa-spec=.])])
5291 gcc_GAS_CHECK_FEATURE([-march=rv32i_zifencei support],
5292 gcc_cv_as_riscv_march_zifencei,,
5293 [-march=rv32i_zifencei],,,
5294 [AC_DEFINE(HAVE_AS_MARCH_ZIFENCEI, 1,
5295 [Define if the assembler understands -march=rv*_zifencei.])])
5298 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5299 gcc_cv_as_s390_gnu_attribute, [2,18,0],,
5300 [.gnu_attribute 8,1],,
5301 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5302 [Define if your assembler supports .gnu_attribute.])])
5303 gcc_GAS_CHECK_FEATURE([.machine and .machinemode support],
5304 gcc_cv_as_s390_machine_machinemode, [2,24,0],,
5309 [AC_DEFINE(HAVE_AS_MACHINE_MACHINEMODE, 1,
5310 [Define if your assembler supports .machine and .machinemode.])])
5311 gcc_GAS_CHECK_FEATURE([architecture modifiers support],
5312 gcc_cv_as_s390_architecture_modifiers, [2,26,0],,
5313 [ .machine z13+vx ],,
5314 [AC_DEFINE(HAVE_AS_ARCHITECTURE_MODIFIERS, 1,
5315 [Define if your assembler supports architecture modifiers.])])
5316 gcc_GAS_CHECK_FEATURE([vector load/store alignment hints],
5317 gcc_cv_as_s390_vector_loadstore_alignment_hints, [2,31,0],,
5318 [ vl %v24,0(%r15),3 ],,
5319 [AC_DEFINE(HAVE_AS_VECTOR_LOADSTORE_ALIGNMENT_HINTS, 1,
5320 [Define if your assembler supports vl/vst/vlm/vstm with an optional alignment hint argument.])])
5321 gcc_GAS_CHECK_FEATURE([vector load/store alignment hints on z13],
5322 gcc_cv_as_s390_vector_loadstore_alignment_hints_on_z13,, [-mzarch -march=z13],
5323 [ vl %v24,0(%r15),3 ],,
5324 [AC_DEFINE(HAVE_AS_VECTOR_LOADSTORE_ALIGNMENT_HINTS_ON_Z13, 1,
5325 [Define if your assembler supports vl/vst/vlm/vstm with an optional alignment hint argument on z13.])])
5330 # Mips and HP-UX need the GNU assembler.
5331 # Linux on IA64 might be able to use the Intel assembler.
5334 mips*-*-* | *-*-hpux* )
5335 if test x$gas_flag = xyes \
5336 || test x"$host" != x"$build" \
5337 || test ! -x "$gcc_cv_as" \
5338 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
5341 echo "*** This configuration requires the GNU assembler" >&2
5347 # ??? Not all targets support dwarf2 debug_line, even within a version
5348 # of gas. Moreover, we need to emit a valid instruction to trigger any
5349 # info to the output file. So, as supported targets are added to gas 2.11,
5350 # add some instruction here to (also) show we expect this might work.
5351 # ??? Once 2.11 is released, probably need to add first known working
5352 # version to the per-target configury.
5354 aarch64 | alpha | arc | arm | avr | bfin | cris | csky | i386 | m32c | m68k \
5355 | microblaze | mips | nds32 | nios2 | pa | riscv | rs6000 | score | sparc \
5356 | tilegx | tilepro | visium | xstormy16 | xtensa)
5366 if test x"$insn" != x; then
5368 .file 1 \"conftest.s\"
5371 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
5372 gcc_cv_as_dwarf2_debug_line,
5373 [elf,2,11,0],, [$conftest_s],
5374 [if test x$gcc_cv_objdump != x \
5375 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
5376 | grep debug_line > /dev/null 2>&1; then
5377 gcc_cv_as_dwarf2_debug_line=yes
5378 elif test x$gcc_cv_otool != x \
5379 && $gcc_cv_otool -l conftest.o 2> /dev/null \
5380 | grep debug_line > /dev/null 2>&1; then
5381 gcc_cv_as_dwarf2_debug_line=yes
5384 # The .debug_line file table must be in the exact order that
5385 # we specified the files, since these indices are also used
5386 # by DW_AT_decl_file. Approximate this test by testing if
5387 # the assembler bitches if the same index is assigned twice.
5388 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
5389 gcc_cv_as_dwarf2_file_buggy,,,
5393 if test $gcc_cv_as_dwarf2_debug_line = yes \
5394 && test $gcc_cv_as_dwarf2_file_buggy = no; then
5395 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
5396 [Define if your assembler supports dwarf2 .file/.loc directives,
5397 and preserves file table indices exactly as given.])
5399 if test $gcc_cv_as_leb128 = yes; then
5401 .file 1 \"conftest.s\"
5402 .loc 1 3 0 view .LVU1
5408 gcc_GAS_CHECK_FEATURE([dwarf2 debug_view support],
5409 gcc_cv_as_dwarf2_debug_view,
5410 [elf,2,27,0],,[$conftest_s],,
5411 [AC_DEFINE(HAVE_AS_DWARF2_DEBUG_VIEW, 1,
5412 [Define if your assembler supports views in dwarf2 .loc directives.])])
5416 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
5417 gcc_cv_as_gdwarf2_flag,
5418 [elf,2,11,0], [--gdwarf2], [$insn],,
5419 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
5420 [Define if your assembler supports the --gdwarf2 option.])])
5422 gcc_GAS_CHECK_FEATURE([--gdwarf-5 option],
5423 gcc_cv_as_gdwarf_5_flag,
5424 [elf,2,36,0], [--gdwarf-5], [$insn],
5425 [if test x$gcc_cv_readelf != x \
5426 && $gcc_cv_readelf -wi conftest.o 2>&1 \
5427 | grep DW_TAG_compile_unit > /dev/null 2>&1; then
5428 gcc_cv_as_gdwarf_5_flag=yes;
5429 fi],[AC_DEFINE(HAVE_AS_GDWARF_5_DEBUG_FLAG, 1,
5430 [Define if your assembler supports the --gdwarf-5 option.])])
5432 dwarf4_debug_info_size=0x46
5433 dwarf4_high_pc_form=7
5434 dwarf4_debug_aranges_size=0x2c
5436 for dwarf4_addr_size in 8 4; do
5443 .type foo, %function
5452 .section .debug_info,\"\",%progbits
5454 .4byte $dwarf4_debug_info_size
5456 .4byte .Ldebug_abbrev0
5457 .byte 0x$dwarf4_addr_size
5459 .ascii \"GNU C17\\0\"
5463 .${dwarf4_addr_size}byte .Ltext0
5464 .${dwarf4_addr_size}byte .Letext0-.Ltext0
5465 .4byte .Ldebug_line0
5471 .${dwarf4_addr_size}byte .LFB0
5472 .${dwarf4_addr_size}byte .LFE0-.LFB0
5476 .section .debug_abbrev,\"\",%progbits
5492 .byte 0x$dwarf4_high_pc_form
5513 .byte 0x$dwarf4_high_pc_form
5519 .section .debug_aranges,\"\",%progbits
5520 .4byte $dwarf4_debug_aranges_size
5522 .4byte .Ldebug_info0
5527 .${dwarf4_addr_size}byte .Ltext0
5528 .${dwarf4_addr_size}byte .Letext0-.Ltext0
5529 .${dwarf4_addr_size}byte 0
5530 .${dwarf4_addr_size}byte 0
5531 .section .debug_line,\"\",%progbits
5533 .4byte .LELT0-.LSLT0
5536 .4byte .LELTP0-.LASLTP0
5564 .byte 0x$dwarf4_line_sz
5566 .${dwarf4_addr_size}byte .LM1
5571 .byte 0x$dwarf4_line_sz
5573 .${dwarf4_addr_size}byte .LM2
5578 .byte 0x$dwarf4_line_sz
5580 .${dwarf4_addr_size}byte .Letext0
5585 .section .debug_str,\"\",%progbits
5589 if test $dwarf4_addr_size = 4; then
5590 gcc_GAS_CHECK_FEATURE([assembly of compiler generated 32-bit .debug_line],
5591 gcc_cv_as_debug_line_32_flag,
5592 [elf,2,36,0], [], [$conftest_s],,
5593 [dwarf4_success=yes])
5595 gcc_GAS_CHECK_FEATURE([assembly of compiler generated 64-bit .debug_line],
5596 gcc_cv_as_debug_line_64_flag,
5597 [elf,2,36,0], [], [$conftest_s],,
5598 [dwarf4_success=yes])
5600 if test $dwarf4_success = yes; then
5602 gcc_GAS_CHECK_FEATURE([--gdwarf-4 not refusing compiler generated .debug_line],
5603 gcc_cv_as_dwarf_4_debug_line_flag,
5604 [elf,2,36,0], [--gdwarf-4], [$conftest_s],,
5605 [dwarf4_success=yes])
5608 dwarf4_debug_info_size=0x36
5609 dwarf4_high_pc_form=6
5610 dwarf4_debug_aranges_size=0x1c
5614 if test $dwarf4_success = yes; then
5632 gcc_GAS_CHECK_FEATURE([--gdwarf-4 with the APP marker],
5633 gcc_cv_as_dwarf_4_app_flag,,
5634 [--gdwarf-4], [$conftest_s],, [dwarf4_success=yes])
5637 if test $dwarf4_success = yes; then
5641 .type foo, %function
5647 gcc_GAS_CHECK_FEATURE([working --gdwarf-4/--gdwarf-5 for all sources],
5648 gcc_cv_as_working_gdwarf_n_flag,,
5652 if test x$gcc_cv_readelf != x \
5653 && $gcc_cv_readelf -w conftest.o 2>&1 \
5654 | grep conftest.s > /dev/null 2>&1; then
5655 gcc_cv_as_working_gdwarf_n_flag=no
5657 gcc_cv_as_working_gdwarf_n_flag=yes
5659 changequote([,])dnl])
5660 if test $gcc_cv_as_working_gdwarf_n_flag = yes; then
5661 AC_DEFINE(HAVE_AS_WORKING_DWARF_N_FLAG, 1,
5662 [Define if your assembler supports --gdwarf-4/--gdwarf-5 even with
5663 compiler generated .debug_line.])
5667 gcc_GAS_CHECK_FEATURE([--gstabs option],
5668 gcc_cv_as_gstabs_flag,
5669 [elf,2,11,0], [--gstabs], [$insn],,
5670 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
5671 [Define if your assembler supports the --gstabs option.])])
5673 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
5674 gcc_cv_as_debug_prefix_map_flag,
5675 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
5676 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
5677 [Define if your assembler supports the --debug-prefix-map option.])])
5680 gcc_GAS_CHECK_FEATURE([compressed debug sections],
5681 gcc_cv_as_compress_debug,,,,
5682 [# gas compiled without zlib cannot compress debug sections and warns
5683 # about it, but still exits successfully. So check for this, too.
5684 if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null
5686 gcc_cv_as_compress_debug=0
5687 # Since binutils 2.26, gas supports --compress-debug-sections=type,
5688 # defaulting to the ELF gABI format.
5689 elif $gcc_cv_as --compress-debug-sections=zlib-gnu -o conftest.o conftest.s > /dev/null 2>&1
5691 gcc_cv_as_compress_debug=2
5692 gcc_cv_as_compress_debug_option="--compress-debug-sections"
5693 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
5694 # Before binutils 2.26, gas only supported --compress-debug-options and
5695 # emitted the traditional GNU format.
5696 elif $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s > /dev/null 2>&1
5698 gcc_cv_as_compress_debug=1
5699 gcc_cv_as_compress_debug_option="--compress-debug-sections"
5700 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
5702 gcc_cv_as_compress_debug=0
5704 AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug,
5705 [Define to the level of your assembler's compressed debug section support.])
5706 AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option",
5707 [Define to the assembler option to enable compressed debug sections.])
5708 AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option",
5709 [Define to the assembler option to disable compressed debug sections.])
5711 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
5714 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
5715 [Define if your assembler supports .lcomm with an alignment field.])])
5717 if test x$with_sysroot = x && test x$host = x$target \
5718 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
5719 && test "$prefix" != "NONE"; then
5720 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
5721 [Define to PREFIX/include if cpp should also search that directory.])
5724 # Determine the version of glibc, if any, used on the target.
5725 AC_MSG_CHECKING([for target glibc version])
5726 AC_ARG_WITH([glibc-version],
5727 [AS_HELP_STRING([--with-glibc-version=M.N],
5728 [assume GCC used with glibc version M.N or later])], [
5729 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
5730 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
5731 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
5733 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
5735 glibc_version_major=0
5736 glibc_version_minor=0
5737 [if test -f $target_header_dir/features.h \
5738 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
5739 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
5740 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
5741 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
5743 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
5744 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MAJOR], [$glibc_version_major],
5745 [GNU C Library major version number used on the target, or 0.])
5746 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MINOR], [$glibc_version_minor],
5747 [GNU C Library minor version number used on the target, or 0.])
5749 AC_ARG_ENABLE(gnu-unique-object,
5750 [AS_HELP_STRING([--enable-gnu-unique-object],
5751 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
5752 [case $enable_gnu_unique_object in
5754 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
5755 Valid choices are 'yes' and 'no'.]) ;;
5757 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
5759 [.type foo, '$target_type_format_char'gnu_unique_object],,
5760 # We need to unquote above to to use the definition from config.gcc.
5761 # Also check for ld.so support, i.e. glibc 2.11 or higher.
5762 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
5764 if test x$enable_gnu_unique_object = xyes; then
5765 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
5766 [Define if your assembler supports @gnu_unique_object.])
5769 AC_CACHE_CHECK([assembler for tolerance to line number 0],
5770 [gcc_cv_as_line_zero],
5771 [gcc_cv_as_line_zero=no
5772 if test $in_tree_gas = yes; then
5773 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
5774 elif test "x$gcc_cv_as" != x; then
5775 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
5776 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
5777 test "x`cat conftest.out`" = x
5779 gcc_cv_as_line_zero=yes
5781 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
5782 cat conftest.s >&AS_MESSAGE_LOG_FD
5783 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
5784 cat conftest.out >&AS_MESSAGE_LOG_FD
5786 rm -f conftest.o conftest.s conftest.out
5788 if test "x$gcc_cv_as_line_zero" = xyes; then
5789 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
5790 [Define if the assembler won't complain about a line such as # 0 "" 2.])
5793 AC_MSG_CHECKING(support for thin archives)
5794 thin_archive_support=no
5795 echo 'int main (void) { return 0; }' > conftest.c
5796 if ($AR --version | sed 1q | grep "GNU ar" \
5797 && $CC $CFLAGS -c conftest.c \
5798 && $AR rcT conftest.a conftest.o \
5799 && $CC $CFLAGS $LDFLAGS -o conftest conftest.a) >/dev/null 2>&1; then
5800 thin_archive_support=yes
5802 rm -f conftest.c conftest.o conftest.a conftest
5803 AC_MSG_RESULT($thin_archive_support)
5804 AC_SUBST(thin_archive_support)
5806 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
5807 gcc_cv_ld_eh_frame_hdr=no
5808 if test $in_tree_ld = yes ; then
5809 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
5810 && test $in_tree_ld_is_elf = yes; then
5811 gcc_cv_ld_eh_frame_hdr=yes
5813 elif test x$gcc_cv_ld != x; then
5814 if echo "$ld_ver" | grep GNU > /dev/null; then
5815 # Check if linker supports --eh-frame-hdr option
5816 if $gcc_cv_ld --help 2>&1 | grep eh-frame-hdr > /dev/null; then
5817 gcc_cv_ld_eh_frame_hdr=yes
5822 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
5823 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
5824 gcc_cv_ld_eh_frame_hdr=yes
5830 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
5831 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
5832 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
5833 [Define if your linker supports .eh_frame_hdr.])
5835 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
5837 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
5838 gcc_cv_ld_eh_frame_ciev3=no
5839 if test $in_tree_ld = yes ; then
5840 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5841 && test $in_tree_ld_is_elf = yes; then
5842 gcc_cv_ld_eh_frame_ciev3=yes
5844 elif test x$gcc_cv_ld != x; then
5845 if echo "$ld_ver" | grep GNU > /dev/null; then
5846 gcc_cv_ld_eh_frame_ciev3=yes
5847 if test 0"$ld_date" -lt 20040513; then
5848 if test -n "$ld_date"; then
5849 # If there was date string, but was earlier than 2004-05-13, fail
5850 gcc_cv_ld_eh_frame_ciev3=no
5851 elif test "$ld_vers_major" -lt 2; then
5852 gcc_cv_ld_eh_frame_ciev3=no
5853 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
5854 gcc_cv_ld_eh_frame_ciev3=no
5860 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
5861 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
5862 gcc_cv_ld_eh_frame_ciev3=yes
5868 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
5869 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
5870 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
5871 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
5873 AC_MSG_CHECKING(linker position independent executable support)
5875 if test $in_tree_ld = yes ; then
5877 # Full PIE support on Solaris was only introduced in gld 2.26.
5878 *-*-solaris2*) gcc_gld_pie_min_version=26 ;;
5879 *) gcc_gld_pie_min_version=15 ;;
5881 if test "$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 \
5882 && test $in_tree_ld_is_elf = yes; then
5885 elif test x$gcc_cv_ld != x; then
5886 # Check if linker supports -pie option
5887 if $gcc_cv_ld --help 2>&1 | grep -- -pie > /dev/null; then
5891 if echo "$ld_ver" | grep GNU > /dev/null \
5892 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
5899 *-*-solaris2.1[[1-9]]*)
5900 # Solaris 11.3 added PIE support.
5901 if $gcc_cv_ld -z help 2>&1 | grep -- type.*pie > /dev/null; then
5908 if test x"$gcc_cv_ld_pie" = xyes; then
5909 AC_DEFINE(HAVE_LD_PIE, 1,
5910 [Define if your linker supports PIE option.])
5912 AC_MSG_RESULT($gcc_cv_ld_pie)
5914 AC_MSG_CHECKING(linker PIE support with copy reloc)
5915 gcc_cv_ld_pie_copyreloc=no
5916 if test $gcc_cv_ld_pie = yes ; then
5917 if test $in_tree_ld = yes ; then
5918 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
5919 gcc_cv_ld_pie_copyreloc=yes
5921 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5922 # Check if linker supports -pie option with copy reloc
5924 i?86-*-linux* | x86_64-*-linux*)
5925 cat > conftest1.s <<EOF
5928 .type a_glob, @object
5933 cat > conftest2.s <<EOF
5936 .type main, @function
5938 movl %eax, a_glob(%rip)
5941 .section .data.rel,"aw",@progbits
5946 if $gcc_cv_as --64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5947 && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \
5948 && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5949 && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then
5950 gcc_cv_ld_pie_copyreloc=yes
5952 rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s
5957 AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC,
5958 [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`],
5959 [Define 0/1 if your linker supports -pie option with copy reloc.])
5960 AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc)
5962 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
5963 gcc_cv_ld_eh_gc_sections=no
5964 if test $in_tree_ld = yes ; then
5965 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
5966 && test $in_tree_ld_is_elf = yes; then
5967 gcc_cv_ld_eh_gc_sections=yes
5969 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
5970 cat > conftest.s <<EOF
5973 .type _start, @function
5976 .size _start, .-_start
5977 .section .text.foo,"ax",@progbits
5978 .type foo, @function
5982 .section .gcc_except_table.foo,"a",@progbits
5985 .section .eh_frame,"a",@progbits
5988 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5989 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5990 | grep "gc-sections option ignored" > /dev/null; then
5991 gcc_cv_ld_eh_gc_sections=no
5992 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5993 | grep gcc_except_table > /dev/null; then
5994 gcc_cv_ld_eh_gc_sections=yes
5995 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
5996 if test x$gcc_cv_as_comdat_group != xyes; then
5997 gcc_cv_ld_eh_gc_sections=no
5998 cat > conftest.s <<EOF
6001 .type _start, @function
6004 .size _start, .-_start
6005 .section .gnu.linkonce.t.foo,"ax",@progbits
6006 .type foo, @function
6010 .section .gcc_except_table.foo,"a",@progbits
6013 .section .eh_frame,"a",@progbits
6016 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
6017 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
6018 | grep "gc-sections option ignored" > /dev/null; then
6019 gcc_cv_ld_eh_gc_sections=no
6020 elif $gcc_cv_objdump -h conftest 2> /dev/null \
6021 | grep gcc_except_table > /dev/null; then
6022 gcc_cv_ld_eh_gc_sections=yes
6028 rm -f conftest.s conftest.o conftest
6032 # ??? This apparently exposes a binutils bug with PC-relative relocations.
6033 gcc_cv_ld_eh_gc_sections=no
6036 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
6037 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
6038 [Define if your linker supports garbage collection of
6039 sections in presence of EH frames.])
6041 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
6043 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
6044 gcc_cv_ld_eh_gc_sections_bug=no
6045 if test $in_tree_ld = yes ; then
6046 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
6047 && test $in_tree_ld_is_elf = yes; then
6048 gcc_cv_ld_eh_gc_sections_bug=yes
6050 elif test x$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
6051 gcc_cv_ld_eh_gc_sections_bug=yes
6052 cat > conftest.s <<EOF
6055 .type _start, @function
6058 .size _start, .-_start
6059 .section .text.startup.foo,"ax",@progbits
6060 .type foo, @function
6064 .section .gcc_except_table.foo,"a",@progbits
6067 .section .eh_frame,"a",@progbits
6070 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
6071 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
6072 | grep "gc-sections option ignored" > /dev/null; then
6074 elif $gcc_cv_objdump -h conftest 2> /dev/null \
6075 | grep gcc_except_table > /dev/null; then
6076 gcc_cv_ld_eh_gc_sections_bug=no
6079 rm -f conftest.s conftest.o conftest
6081 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
6082 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
6083 [Define if your linker has buggy garbage collection of
6084 sections support when .text.startup.foo like sections are used.])
6086 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
6088 AC_MSG_CHECKING(linker for compressed debug sections)
6089 # gold/gld support compressed debug sections since binutils 2.19/2.21
6090 # In binutils 2.26, gld gained support for the ELF gABI format.
6091 if test $in_tree_ld = yes ; then
6092 gcc_cv_ld_compress_debug=0
6093 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 19 -o "$gcc_cv_gld_major_version" -gt 2 \
6094 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = yes; then
6095 gcc_cv_ld_compress_debug=2
6096 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
6097 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 26 -o "$gcc_cv_gld_major_version" -gt 2 \
6098 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = no; then
6099 gcc_cv_ld_compress_debug=3
6100 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
6101 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2 \
6102 && test $in_tree_ld_is_elf = yes; then
6103 gcc_cv_ld_compress_debug=1
6105 elif echo "$ld_ver" | grep GNU > /dev/null; then
6106 if test "$ld_vers_major" -lt 2 \
6107 || test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 21; then
6108 gcc_cv_ld_compress_debug=0
6109 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
6110 gcc_cv_ld_compress_debug=1
6112 gcc_cv_ld_compress_debug=3
6113 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
6115 if test $ld_is_gold = yes; then
6116 gcc_cv_ld_compress_debug=2
6117 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
6123 # Introduced in Solaris 11.2.
6124 if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then
6125 gcc_cv_ld_compress_debug=3
6126 gcc_cv_ld_compress_debug_option="-z compress-sections"
6128 gcc_cv_ld_compress_debug=0
6132 # Assume linkers other than GNU ld don't support compessed debug
6134 gcc_cv_ld_compress_debug=0
6139 AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug,
6140 [Define to the level of your linker's compressed debug section support.])
6141 AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option",
6142 [Define to the linker option to enable compressed debug sections.])
6143 AC_MSG_RESULT($gcc_cv_ld_compress_debug)
6145 if test x"$ld64_flag" = x"yes"; then
6147 # Set defaults for possibly untestable items.
6148 gcc_cv_ld64_export_dynamic=0
6150 if test "$build" = "$host"; then
6156 # On Darwin, because of FAT library support, it is often possible to execute
6157 # exes from compatible archs even when the host differs from the build system.
6158 case "$build","$host" in
6159 x86_64-*-darwin*,i?86-*-darwin* | powerpc64*-*-darwin*,powerpc*-*-darwin*)
6164 # If the configurer specified a minimum ld64 version to be supported, then use
6165 # that to determine feature support.
6166 if test x"${gcc_cv_ld64_version}" != x; then
6167 AC_MSG_CHECKING(ld64 specified version)
6168 gcc_cv_ld64_major=`echo "$gcc_cv_ld64_version" | sed -e 's/\..*//'`
6169 AC_MSG_RESULT($gcc_cv_ld64_major)
6170 if test "$gcc_cv_ld64_major" -ge 236; then
6171 gcc_cv_ld64_export_dynamic=1
6173 elif test -x "$gcc_cv_ld" -a "$darwin_try_test" -eq 1; then
6174 # If the version was not specified, try to find it.
6175 AC_MSG_CHECKING(linker version)
6176 if test x"${gcc_cv_ld64_version}" = x; then
6177 gcc_cv_ld64_version=`$gcc_cv_ld -v 2>&1 | grep ld64 | sed s/.*ld64-// | awk '{print $1}'`
6179 AC_MSG_RESULT($gcc_cv_ld64_version)
6181 AC_MSG_CHECKING(linker for -export_dynamic support)
6182 gcc_cv_ld64_export_dynamic=1
6183 if $gcc_cv_ld -export_dynamic < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then
6184 gcc_cv_ld64_export_dynamic=0
6186 AC_MSG_RESULT($gcc_cv_ld64_export_dynamic)
6189 if test x"${gcc_cv_ld64_version}" != x; then
6190 AC_DEFINE_UNQUOTED(LD64_VERSION, "${gcc_cv_ld64_version}",
6191 [Define to ld64 version.])
6194 AC_DEFINE_UNQUOTED(LD64_HAS_EXPORT_DYNAMIC, $gcc_cv_ld64_export_dynamic,
6195 [Define to 1 if ld64 supports '-export_dynamic'.])
6199 win32 | pe | cygwin* | mingw32*)
6200 AC_MSG_CHECKING(broken PE linker dwarf5 support)
6201 gcc_cv_ld_broken_pe_dwarf5=yes
6202 if test $in_tree_ld = yes ; then
6203 if grep -q '\.debug_loclists.*BLOCK.*__section_alignment__.*NOLOAD.*:' \
6204 $gcc_cv_ld_gld_srcdir/scripttempl/pe*.sc \
6205 && grep -q '\.debug_rnglists.*BLOCK.*__section_alignment__.*NOLOAD.*:' \
6206 $gcc_cv_ld_gld_srcdir/scripttempl/pe*.sc; then
6207 gcc_cv_ld_broken_pe_dwarf5=no
6210 if $gcc_cv_ld --verbose 2>&1 | grep -q '\.debug_loclists.*BLOCK.*__section_alignment__.*NOLOAD.*:' \
6211 && $gcc_cv_ld --verbose 2>&1 | grep -q '\.debug_rnglists.*BLOCK.*__section_alignment__.*NOLOAD.*:'; then
6212 gcc_cv_ld_broken_pe_dwarf5=no
6215 if test x$gcc_cv_ld_broken_pe_dwarf5 = xyes; then
6216 AC_DEFINE(HAVE_LD_BROKEN_PE_DWARF5, 1,
6217 [Define if the PE linker has broken DWARF 5 support.])
6219 AC_MSG_RESULT($gcc_cv_ld_broken_pe_dwarf5)
6227 AC_CACHE_CHECK(linker --as-needed support,
6228 gcc_cv_ld_as_needed,
6229 [gcc_cv_ld_as_needed=no
6230 gcc_cv_ld_as_needed_option='--as-needed'
6231 gcc_cv_ld_no_as_needed_option='--no-as-needed'
6232 if test $in_tree_ld = yes ; then
6233 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
6234 && test $in_tree_ld_is_elf = yes; then
6235 gcc_cv_ld_as_needed=yes
6236 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 28; then
6237 gcc_cv_ld_as_needed_option='--push-state --as-needed'
6238 gcc_cv_ld_no_as_needed_option='--pop-state'
6241 elif test x$gcc_cv_ld != x; then
6242 # Check if linker supports --as-needed and --no-as-needed options
6243 if $gcc_cv_ld --help 2>&1 | grep as-needed > /dev/null; then
6244 gcc_cv_ld_as_needed=yes
6245 if $gcc_cv_ld --help 2>&1 | grep push-state > /dev/null \
6246 && $gcc_cv_ld --help 2>&1 | grep pop-state > /dev/null \
6247 && echo "$ld_ver" | grep GNU > /dev/null \
6248 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 28; then
6249 # Use these options only when both ld.bfd and ld.gold support
6250 # --push-state/--pop-state, which unfortunately wasn't added
6252 gcc_cv_ld_as_needed_option='--push-state --as-needed'
6253 gcc_cv_ld_no_as_needed_option='--pop-state'
6256 case "$target:$gnu_ld" in
6258 # Solaris 2 ld always supports -z ignore/-z record. Prefer the native
6260 gcc_cv_ld_as_needed=yes
6261 gcc_cv_ld_as_needed_option="-z ignore"
6262 gcc_cv_ld_no_as_needed_option="-z record"
6266 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
6267 # dl_iterate_phdr, i.e. since Solaris 11.
6269 *-*-solaris2.1[[1-9]]*)
6271 i?86-*-* | x86_64-*-*)
6272 if echo "$ld_ver" | grep GNU > /dev/null; then
6273 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
6274 gcc_cv_ld_as_needed=no
6280 gcc_cv_ld_as_needed=no
6284 if test x"$gcc_cv_ld_as_needed" = xyes; then
6285 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
6286 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
6287 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
6288 [Define to the linker option to ignore unused dependencies.])
6289 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
6290 [Define to the linker option to keep unused dependencies.])
6293 AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities)
6294 saved_LDFLAGS="$LDFLAGS"
6295 for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do
6296 LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map"
6297 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
6298 [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no])
6300 LDFLAGS="$saved_LDFLAGS"
6301 if test "x$gcc_cv_ld_clearcap" = xyes; then
6302 AC_DEFINE([HAVE_LD_CLEARCAP], 1,
6303 [Define if the linker supports clearing hardware capabilities via mapfile.])
6304 AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map])
6306 AC_MSG_RESULT($gcc_cv_ld_clearcap)
6312 emul_name="-melf32lppc"
6315 emul_name="-melf32ppc"
6318 AC_CACHE_CHECK(linker .gnu.attributes long double support,
6320 [gcc_cv_ld_ppc_attr=no
6321 if test x"$ld_is_gold" = xyes; then
6322 gcc_cv_ld_ppc_attr=yes
6323 elif test $in_tree_ld = yes ; then
6324 if test "$gcc_cv_gld_major_version" -eq 2 \
6325 -a "$gcc_cv_gld_minor_version" -ge 28 \
6326 -o "$gcc_cv_gld_major_version" -gt 2; then
6327 gcc_cv_ld_ppc_attr=yes
6329 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6330 # check that merging the long double .gnu_attribute doesn't warn
6331 cat > conftest1.s <<EOF
6334 cat > conftest2.s <<EOF
6337 if $gcc_cv_as -a32 -o conftest1.o conftest1.s > /dev/null 2>&1 \
6338 && $gcc_cv_as -a32 -o conftest2.o conftest2.s > /dev/null 2>&1 \
6339 && $gcc_cv_ld $emul_name -r -o conftest.o conftest1.o conftest2.o > /dev/null 2> conftest.err \
6340 && test ! -s conftest.err; then
6341 gcc_cv_ld_ppc_attr=yes
6343 rm -f conftest.err conftest.o conftest1.o conftest2.o conftest1.s conftest2.s
6346 if test x$gcc_cv_ld_ppc_attr = xyes; then
6347 AC_DEFINE(HAVE_LD_PPC_GNU_ATTR_LONG_DOUBLE, 1,
6348 [Define if your PowerPC linker has .gnu.attributes long double support.])
6353 case "$target:$tm_file" in
6354 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
6357 emul_name="-melf64lppc"
6360 emul_name="-melf64ppc"
6363 emul_name="-melf64lppc_fbsd"
6366 emul_name="-melf64ppc_fbsd"
6369 AC_CACHE_CHECK(linker support for omitting dot symbols,
6370 gcc_cv_ld_no_dot_syms,
6371 [gcc_cv_ld_no_dot_syms=no
6372 if test x"$ld_is_gold" = xyes; then
6373 gcc_cv_ld_no_dot_syms=yes
6374 elif test $in_tree_ld = yes ; then
6375 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
6376 gcc_cv_ld_no_dot_syms=yes
6378 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6379 cat > conftest1.s <<EOF
6383 cat > conftest2.s <<EOF
6384 .section ".opd","aw"
6389 .quad .LEfoo,.TOC.@tocbase,0
6395 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
6396 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
6397 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
6398 gcc_cv_ld_no_dot_syms=yes
6400 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
6403 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
6404 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
6405 [Define if your PowerPC64 linker only needs function descriptor syms.])
6408 AC_CACHE_CHECK(linker large toc support,
6409 gcc_cv_ld_large_toc,
6410 [gcc_cv_ld_large_toc=no
6411 if test x"$ld_is_gold" = xyes; then
6412 gcc_cv_ld_large_toc=yes
6413 elif test $in_tree_ld = yes ; then
6414 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
6415 gcc_cv_ld_large_toc=yes
6417 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6418 cat > conftest.s <<EOF
6419 .section ".tbss","awT",@nobits
6425 addis 9,13,ie0@got@tprel@ha
6426 ld 9,ie0@got@tprel@l(9)
6428 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
6429 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
6430 gcc_cv_ld_large_toc=yes
6432 rm -f conftest conftest.o conftest.s
6435 if test x"$gcc_cv_ld_large_toc" = xyes; then
6436 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
6437 [Define if your PowerPC64 linker supports a large TOC.])
6440 AC_CACHE_CHECK(linker toc pointer alignment,
6441 gcc_cv_ld_toc_align,
6442 [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then
6443 cat > conftest.s <<EOF
6448 .section .data.rel.ro,"aw",@progbits
6453 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
6454 && $gcc_cv_ld $emul_name -z norelro -o conftest conftest.o > /dev/null 2>&1; then
6455 gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'`
6457 rm -f conftest conftest.o conftest.s
6460 if test -n "$gcc_cv_ld_toc_align" && test $gcc_cv_ld_toc_align -gt 8; then
6461 AC_DEFINE_UNQUOTED(POWERPC64_TOC_POINTER_ALIGNMENT, $gcc_cv_ld_toc_align,
6462 [Define to .TOC. alignment forced by your linker.])
6469 AC_CACHE_CHECK(linker large toc support,
6470 gcc_cv_ld_large_toc,
6471 [gcc_cv_ld_large_toc=no
6472 if test x$gcc_cv_as != x ; then
6473 cat > conftest.s <<EOF
6483 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
6484 gcc_cv_ld_large_toc=yes
6486 rm -f conftest conftest.o conftest.s
6489 if test x"$gcc_cv_ld_large_toc" = xyes; then
6490 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
6491 [Define if your PowerPC64 linker supports a large TOC.])
6496 AC_CACHE_CHECK(linker --build-id support,
6498 [gcc_cv_ld_buildid=no
6499 if test $in_tree_ld = yes ; then
6500 if test "$gcc_cv_gld_major_version" -eq 2 -a \
6501 "$gcc_cv_gld_minor_version" -ge 18 -o \
6502 "$gcc_cv_gld_major_version" -gt 2 \
6503 && test $in_tree_ld_is_elf = yes; then
6504 gcc_cv_ld_buildid=yes
6506 elif test x$gcc_cv_ld != x; then
6507 if $gcc_cv_ld --help 2>&1 | grep build-id > /dev/null; then
6508 gcc_cv_ld_buildid=yes
6511 if test x"$gcc_cv_ld_buildid" = xyes; then
6512 AC_DEFINE(HAVE_LD_BUILDID, 1,
6513 [Define if your linker supports --build-id.])
6516 AC_ARG_ENABLE(linker-build-id,
6517 [AS_HELP_STRING([--enable-linker-build-id],
6518 [compiler will always pass --build-id to linker])],
6520 enable_linker_build_id=no)
6522 if test x"$enable_linker_build_id" = xyes; then
6523 if test x"$gcc_cv_ld_buildid" = xyes; then
6524 AC_DEFINE(ENABLE_LD_BUILDID, 1,
6525 [Define if gcc should always pass --build-id to linker.])
6527 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
6531 # In binutils 2.21, GNU ld gained support for new emulations fully
6532 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
6533 AC_CACHE_CHECK(linker *_sol2 emulation support,
6534 gcc_cv_ld_sol2_emulation,
6535 [gcc_cv_ld_sol2_emulation=no
6536 if test $in_tree_ld = yes ; then
6537 if test "$gcc_cv_gld_major_version" -eq 2 -a \
6538 "$gcc_cv_gld_minor_version" -ge 21 -o \
6539 "$gcc_cv_gld_major_version" -gt 2 \
6540 && test $in_tree_ld_is_elf = yes; then
6541 gcc_cv_ld_sol2_emulation=yes
6543 elif test x$gcc_cv_ld != x; then
6544 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
6545 grep _sol2 > /dev/null; then
6546 gcc_cv_ld_sol2_emulation=yes
6549 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
6550 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
6551 [Define if your linker supports the *_sol2 emulations.])
6554 AC_CACHE_CHECK(linker --sysroot support,
6556 [gcc_cv_ld_sysroot=no
6557 if test $in_tree_ld = yes ; then
6558 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
6559 gcc_cv_ld_sysroot=yes
6561 elif test x$gcc_cv_ld != x; then
6562 if $gcc_cv_ld --help 2>&1 | grep sysroot > /dev/null; then
6563 gcc_cv_ld_sysroot=yes
6566 if test x"$gcc_cv_ld_sysroot" = xyes; then
6567 AC_DEFINE(HAVE_LD_SYSROOT, 1,
6568 [Define if your linker supports --sysroot.])
6573 # Check for system-provided CRTs on Solaris 11.x and Solaris 12.
6574 AC_CACHE_CHECK([system-provided CRTs on Solaris],
6575 gcc_cv_solaris_crts,
6576 [gcc_cv_solaris_crts=no
6577 if test x$host != x$target; then
6578 if test "x$with_sysroot" = xyes; then
6579 target_sysroot="${test_exec_prefix}/${target_noncanonical}/sys-root"
6581 target_sysroot="${with_sysroot}"
6584 target_libdir="$target_sysroot/usr/lib"
6585 # At the time they were added, gcrt1.o became a symlink for backwards
6586 # compatibility on x86, while crt1.o was added on sparc, so check for that.
6588 i?86-*-solaris2* | x86_64-*-solaris2*)
6589 if test -h "$target_libdir/gcrt1.o"; then gcc_cv_solaris_crts=yes; fi
6592 if test -f "$target_libdir/crt1.o"; then gcc_cv_solaris_crts=yes; fi
6597 if test x$gcc_cv_solaris_crts = xyes; then
6598 AC_DEFINE(HAVE_SOLARIS_CRTS, 1,
6599 [Define if the system-provided CRTs are present on Solaris.])
6602 AC_ARG_ENABLE(libssp,
6603 [AS_HELP_STRING([--enable-libssp], [enable linking against libssp])],
6604 [case "${enableval}" in
6608 AC_MSG_ERROR([unknown libssp setting $enableval])
6612 # Test for stack protector support in target C library.
6613 AC_CACHE_CHECK(__stack_chk_fail in target C library,
6614 gcc_cv_libc_provides_ssp,
6615 [gcc_cv_libc_provides_ssp=no
6616 if test "x$enable_libssp" = "xno"; then
6617 gcc_cv_libc_provides_ssp=yes
6618 elif test "x$enable_libssp" = "xyes"; then
6619 gcc_cv_libc_provides_ssp=no
6623 # All versions of musl provide stack protector
6624 gcc_cv_libc_provides_ssp=yes;;
6625 *-*-linux* | *-*-kfreebsd*-gnu)
6626 # glibc 2.4 and later provides __stack_chk_fail and
6627 # either __stack_chk_guard, or TLS access to stack guard canary.
6628 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
6629 [if test -f $target_header_dir/features.h \
6630 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
6631 $target_header_dir/features.h > /dev/null; then
6632 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
6633 $target_header_dir/features.h > /dev/null && \
6634 test -f $target_header_dir/bits/uClibc_config.h && \
6635 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
6636 $target_header_dir/bits/uClibc_config.h > /dev/null; then
6637 gcc_cv_libc_provides_ssp=yes
6639 # all versions of Bionic support stack protector
6640 elif test -f $target_header_dir/sys/cdefs.h \
6641 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
6642 $target_header_dir/sys/cdefs.h > /dev/null; then
6643 gcc_cv_libc_provides_ssp=yes
6647 # Avoid complicated tests (see
6648 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
6649 # simply assert that glibc does provide this, which is true for all
6650 # realistically usable GNU/Hurd configurations.
6651 # All supported versions of musl provide it as well
6652 gcc_cv_libc_provides_ssp=yes;;
6653 *-*-darwin* | *-*-freebsd* | *-*-netbsd*)
6654 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
6655 [echo "no __stack_chk_fail on this target"])
6657 *) gcc_cv_libc_provides_ssp=no ;;
6661 if test x$gcc_cv_libc_provides_ssp = xyes; then
6662 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
6663 [Define if your target C library provides stack protector support])
6666 # Check whether --enable-default-ssp was given.
6667 AC_ARG_ENABLE(default-ssp,
6668 [AS_HELP_STRING([--enable-default-ssp],
6669 [enable Stack Smashing Protection as default])],[
6670 if test x$gcc_cv_libc_provides_ssp = xyes; then
6672 ia64*-*-*) enable_default_ssp=no ;;
6673 *) enable_default_ssp=$enableval ;;
6676 enable_default_ssp=no
6678 enable_default_ssp=no)
6679 if test x$enable_default_ssp = xyes ; then
6680 AC_DEFINE(ENABLE_DEFAULT_SSP, 1,
6681 [Define if your target supports default stack protector and it is enabled.])
6683 AC_SUBST([enable_default_ssp])
6685 # Test for <sys/sdt.h> on the target.
6686 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
6687 AC_MSG_CHECKING(sys/sdt.h in the target C library)
6689 if test -f $target_header_dir/sys/sdt.h; then
6691 AC_DEFINE(HAVE_SYS_SDT_H, 1,
6692 [Define if your target C library provides sys/sdt.h])
6694 AC_MSG_RESULT($have_sys_sdt_h)
6696 # Check if TFmode long double should be used by default or not.
6697 # Some glibc targets used DFmode long double, but with glibc 2.4
6698 # and later they can use TFmode.
6700 powerpc*-*-linux* | \
6704 AC_ARG_WITH(long-double-128,
6705 [AS_HELP_STRING([--with-long-double-128],
6706 [use 128-bit long double by default])],
6707 gcc_cv_target_ldbl128="$with_long_double_128", [
6709 s390*-*-linux-musl*)
6710 gcc_cv_target_ldbl128=yes
6712 powerpc*-*-linux-musl*)
6713 gcc_cv_target_ldbl128=no
6716 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
6717 [gcc_cv_target_ldbl128=no
6718 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
6719 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
6720 && gcc_cv_target_ldbl128=yes
6728 if test x$gcc_cv_target_ldbl128 = xyes; then
6729 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
6730 [Define if TFmode long double should be the default])
6733 # Check if TFmode long double target should use the IBM extended double or IEEE
6734 # 128-bit floating point formats if long doubles are 128-bits long. The long
6735 # double type can only be switched on powerpc64 bit Linux systems where VSX is
6736 # supported. Other PowerPC systems do not build the IEEE 128-bit emulator in
6738 AC_ARG_WITH([long-double-format],
6739 [AS_HELP_STRING([--with-long-double-format={ieee,ibm}]
6740 [Specify whether PowerPC long double uses IEEE or IBM format])],[
6741 case "$target:$with_long_double_format" in
6742 powerpc64le-*-linux*:ieee | powerpc64le-*-linux*:ibm)
6745 powerpc64-*-linux*:ieee | powerpc64-*-linux*:ibm)
6746 # IEEE 128-bit emulation is only built on 64-bit VSX Linux systems
6748 power7 | power8 | power9 | power1*)
6752 AC_MSG_ERROR([Configuration option --with-long-double-format is only \
6753 supported if the default cpu is power7 or newer])
6754 with_long_double_format=""
6758 powerpc64*-*-linux*:*)
6759 AC_MSG_ERROR([--with-long-double-format argument should be ibm or ieee])
6760 with_long_double_format=""
6763 AC_MSG_ERROR([Configure option --with-long-double-format is only supported \
6764 on 64-bit PowerPC VSX Linux systems])
6765 with_long_double_format=""
6770 # Check if the target LIBC supports exporting the AT_PLATFORM and AT_HWCAP
6771 # values in the TCB. Currently, only GLIBC 2.23 and later support this.
6772 gcc_cv_libc_provides_hwcap_in_tcb=no
6775 GCC_GLIBC_VERSION_GTE_IFELSE([2], [23], [gcc_cv_libc_provides_hwcap_in_tcb=yes], )
6778 if test x$gcc_cv_libc_provides_hwcap_in_tcb = xyes; then
6779 AC_DEFINE(TARGET_LIBC_PROVIDES_HWCAP_IN_TCB, 1,
6780 [Define if your target C Library provides the AT_HWCAP value in the TCB])
6783 # Check if the target LIBC handles PT_GNU_STACK.
6784 gcc_cv_libc_gnustack=unknown
6787 GCC_GLIBC_VERSION_GTE_IFELSE([2], [31], [gcc_cv_libc_gnustack=yes], )
6790 if test x$gcc_cv_libc_gnustack = xyes; then
6791 AC_DEFINE(TARGET_LIBC_GNUSTACK, 1,
6792 [Define if your target C Library properly handles PT_GNU_STACK])
6795 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
6796 gcc_cv_target_dl_iterate_phdr=unknown
6799 # <link.h> needs both a dl_iterate_phdr declaration and support for
6800 # compilation with largefile support.
6801 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
6802 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
6803 gcc_cv_target_dl_iterate_phdr=yes
6805 gcc_cv_target_dl_iterate_phdr=no
6808 *-*-dragonfly* | *-*-freebsd*)
6809 if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then
6810 gcc_cv_target_dl_iterate_phdr=yes
6812 gcc_cv_target_dl_iterate_phdr=no
6816 gcc_cv_target_dl_iterate_phdr=yes
6819 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
6820 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
6821 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
6822 [Define if your target C library provides the `dl_iterate_phdr' function.])
6824 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
6826 # We no longer support different GC mechanisms. Emit an error if
6827 # the user configures with --with-gc.
6829 [AS_HELP_STRING([--with-gc={page,zone}],
6830 [this option is not supported anymore. It used to choose
6831 the garbage collection mechanism to use with the compiler])],
6832 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
6835 # Libraries to use on the host. This will normally be set by the top
6836 # level Makefile. Here we simply capture the value for our Makefile.
6837 if test -z "${HOST_LIBS+set}"; then
6842 # Use the system's zlib library.
6845 dnl Very limited version of automake's enable-maintainer-mode
6847 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
6848 dnl maintainer-mode is disabled by default
6849 AC_ARG_ENABLE(maintainer-mode,
6850 [AS_HELP_STRING([--enable-maintainer-mode],
6851 [enable make rules and dependencies not useful
6852 (and sometimes confusing) to the casual installer])],
6853 maintainer_mode=$enableval,
6856 AC_MSG_RESULT($maintainer_mode)
6858 if test "$maintainer_mode" = "yes"; then
6865 dnl Whether to prevent multiple front-ends from linking at the same time
6867 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
6868 AC_ARG_ENABLE(link-mutex,
6869 [AS_HELP_STRING([--enable-link-mutex],
6870 [avoid linking multiple front-ends at once to avoid thrashing
6871 on the build machine])],
6872 do_link_mutex=$enableval,
6874 AC_MSG_RESULT($do_link_mutex)
6876 if test "$do_link_mutex" = "yes"; then
6881 AC_SUBST(DO_LINK_MUTEX)
6883 dnl Whether to prevent multiple GCC front-ends from linking at the same time
6885 AC_MSG_CHECKING([whether to serialize linking of multiple front-ends])
6886 AC_ARG_ENABLE(link-serialization,
6887 [AS_HELP_STRING([--enable-link-serialization],
6888 [avoid linking multiple GCC front-ends at once using make
6889 dependencies to avoid thrashing on the build machine])],
6890 do_link_serialization=$enableval,
6891 do_link_serialization=no)
6892 AC_MSG_RESULT($do_link_serialization)
6894 case "$do_link_serialization" in
6896 DO_LINK_SERIALIZATION=1;;
6897 [[1-9]] | [[1-9]][[0-9]] | [[1-9]][[0-9]][[0-9]])
6898 DO_LINK_SERIALIZATION=$do_link_serialization;;
6900 DO_LINK_SERIALIZATION=;;
6902 AC_MSG_ERROR(bad value ${do_link_serialization} given for --enable-link-serialization) ;;
6904 AC_SUBST(DO_LINK_SERIALIZATION)
6910 # Make empty files to contain the specs and options for each language.
6911 # Then add #include lines to for a compiler that has specs and/or options.
6917 # These (without "all_") are set in each config-lang.in.
6918 # `language' must be a single word so is spelled singularly.
6921 all_outputs='Makefile'
6922 # List of language configure and makefile fragments.
6923 all_lang_configurefrags=
6925 # Additional files for gengtype
6926 all_gtfiles="$target_gtfiles"
6928 # These are the languages that are set in --enable-languages,
6929 # and are available in the GCC tree.
6930 all_selected_languages=
6932 # Add the language fragments.
6933 # Languages are added via two mechanisms. Some information must be
6934 # recorded in makefile variables, these are defined in config-lang.in.
6935 # We accumulate them and plug them into the main Makefile.
6936 # The other mechanism is a set of hooks for each of the main targets
6937 # like `clean', `install', etc.
6939 language_hooks="Make-hooks"
6941 for lang in ${srcdir}/*/config-lang.in
6944 test "$lang" = "${srcdir}/*/config-lang.in" && continue
6946 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
6947 if test "x$lang_alias" = x
6949 echo "$lang doesn't set \$language." 1>&2
6952 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
6953 subdirs="$subdirs $subdir"
6955 # $gcc_subdir is where the gcc integration files are to be found
6956 # for a language, both for internal compiler purposes (compiler
6957 # sources implementing front-end to GCC tree converters), and for
6958 # build infrastructure purposes (Make-lang.in, etc.)
6960 # This will be <subdir> (relative to $srcdir) if a line like
6961 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
6962 # is found in <langdir>/config-lang.in, and will remain <langdir>
6965 # Except for the language alias (fetched above), the regular
6966 # "config-lang.in" contents are always retrieved from $gcc_subdir,
6967 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
6968 # only this and the language alias.
6970 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
6971 if [ "$gcc_subdir" = "" ]; then
6972 gcc_subdir="$subdir"
6975 case ",$enable_languages," in
6977 all_selected_languages="$all_selected_languages $lang_alias"
6978 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
6979 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
6991 . ${srcdir}/$gcc_subdir/config-lang.in
6992 if test "x$language" = x
6994 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
6999 case ",$enable_languages," in
7002 for i in $subdir_requires; do
7003 test -f "${srcdir}/$i/config-lang.in" && continue
7011 all_lang_configurefrags="$all_lang_configurefrags \$(srcdir)/$gcc_subdir/config-lang.in"
7012 if test "x$language" = xc && test -n "$all_lang_makefrags"; then
7013 # Put c/Make-lang.in fragment first to match serialization languages order.
7014 all_lang_makefrags="\$(srcdir)/$gcc_subdir/Make-lang.in $all_lang_makefrags"
7016 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
7018 if test -f $srcdir/$gcc_subdir/lang.opt; then
7019 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
7020 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
7022 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
7023 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
7025 all_languages="$all_languages $language"
7026 all_compilers="$all_compilers $compilers"
7027 all_outputs="$all_outputs $outputs"
7028 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
7029 case ",$enable_languages," in
7031 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
7033 AC_SUBST(enable_lto)
7040 for language in $all_selected_languages
7042 check_languages="$check_languages check-$language"
7046 for language in $all_selected_languages
7048 selftest_languages="$selftest_languages selftest-$language"
7051 # We link each language in with a set of hooks, reached indirectly via
7052 # lang.${target}. Only do so for selected languages.
7056 target_list="all.cross start.encap rest.encap tags \
7057 install-common install-man install-info install-pdf install-html dvi \
7058 pdf html uninstall info man srcextra srcman srcinfo \
7059 mostlyclean clean distclean maintainer-clean install-plugin"
7061 for t in $target_list
7064 for lang in $all_selected_languages
7068 echo "lang.$t: $x" >> Make-hooks
7071 echo "ifeq (\$(DO_LINK_SERIALIZATION),)" >> Make-hooks
7072 echo "SERIAL_LIST =" >> Make-hooks
7073 echo else >> Make-hooks
7077 serialization_languages=c
7078 for lang in $all_selected_languages
7080 test $lang = c && continue
7081 if test $lang = lto; then
7082 serialization_languages="$serialization_languages lto1 lto2"
7084 serialization_languages="$serialization_languages $lang"
7087 for lang in $serialization_languages
7089 test $lang = c && continue
7090 lang_cnt=`expr $lang_cnt + 1`
7091 lang_list=" $prev$lang_list"
7094 echo "SERIAL_LIST = \$(wordlist \$(DO_LINK_SERIALIZATION),$lang_cnt,$lang_list)" >> Make-hooks
7095 echo endif >> Make-hooks
7096 echo "SERIAL_COUNT = `expr $lang_cnt + 1`" >> Make-hooks
7097 echo "INDEX.c = 0" >> Make-hooks
7099 for lang in $serialization_languages
7101 test $lang = c && continue
7102 echo "$lang.prev = \$(if \$(word $lang_cnt,\$(SERIAL_LIST)),\$(\$(word $lang_cnt,\$(SERIAL_LIST)).serial))" >> Make-hooks
7103 echo "INDEX.$lang = $lang_idx" >> Make-hooks
7104 lang_cnt=`expr $lang_cnt - 1`
7105 lang_idx=`expr $lang_idx + 1`
7109 # Option include files
7112 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
7113 option_includes="option-includes.mk"
7114 AC_SUBST_FILE(option_includes)
7122 echo "dir ." > .gdbinit
7123 echo "dir ${srcdir}" >> .gdbinit
7124 if test x$gdb_needs_out_file_path = xyes
7126 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
7128 if test "x$subdirs" != x; then
7131 echo "dir ${srcdir}/$s" >> .gdbinit
7134 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
7135 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
7137 # Put a breakpoint on __asan_report_error to help with debugging buffer
7140 *-fsanitize=address*)
7141 echo "source ${srcdir}/gdbasan.in" >> .gdbinit
7145 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
7146 AC_SUBST(gcc_tooldir)
7149 # Find a directory in which to install a shared libgcc.
7151 AC_ARG_ENABLE(version-specific-runtime-libs,
7152 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
7153 [specify that runtime libraries should be
7154 installed in a compiler-specific directory])])
7156 # Substitute configuration variables
7159 AC_SUBST(all_compilers)
7160 AC_SUBST(all_gtfiles)
7161 AC_SUBST(all_lang_configurefrags)
7162 AC_SUBST(all_lang_makefrags)
7163 AC_SUBST(all_languages)
7164 AC_SUBST(all_selected_languages)
7165 AC_SUBST(build_exeext)
7166 AC_SUBST(build_install_headers_dir)
7167 AC_SUBST(build_xm_file_list)
7168 AC_SUBST(build_xm_include_list)
7169 AC_SUBST(build_xm_defines)
7170 AC_SUBST(build_file_translate)
7171 AC_SUBST(check_languages)
7172 AC_SUBST(selftest_languages)
7173 AC_SUBST(cpp_install_dir)
7174 AC_SUBST(xmake_file)
7175 AC_SUBST(tmake_file)
7176 AC_SUBST(TM_ENDIAN_CONFIG)
7177 AC_SUBST(TM_MULTILIB_CONFIG)
7178 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
7179 AC_SUBST(extra_gcc_objs)
7180 AC_SUBST(user_headers_inc_next_pre)
7181 AC_SUBST(user_headers_inc_next_post)
7182 AC_SUBST(extra_headers_list)
7183 AC_SUBST(extra_objs)
7184 AC_SUBST(extra_programs)
7185 AC_SUBST(float_h_file)
7186 AC_SUBST(gcc_config_arguments)
7187 AC_SUBST(gcc_gxx_include_dir)
7188 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
7189 AC_SUBST(gcc_gxx_libcxx_include_dir)
7190 AC_SUBST(gcc_gxx_libcxx_include_dir_add_sysroot)
7191 AC_SUBST(host_exeext)
7192 AC_SUBST(host_xm_file_list)
7193 AC_SUBST(host_xm_include_list)
7194 AC_SUBST(host_xm_defines)
7195 AC_SUBST(out_host_hook_obj)
7197 AC_SUBST(lang_opt_files)
7198 AC_SUBST(lang_specs_files)
7199 AC_SUBST(lang_tree_files)
7200 AC_SUBST(local_prefix)
7202 AC_SUBST(objc_boehm_gc)
7204 AC_SUBST(out_object_file)
7205 AC_SUBST(common_out_file)
7206 AC_SUBST(common_out_object_file)
7207 AC_SUBST(tm_file_list)
7208 AC_SUBST(tm_include_list)
7209 AC_SUBST(tm_defines)
7210 AC_SUBST(tm_p_file_list)
7211 AC_SUBST(tm_p_include_list)
7212 AC_SUBST(tm_d_file_list)
7213 AC_SUBST(tm_d_include_list)
7214 AC_SUBST(xm_file_list)
7215 AC_SUBST(xm_include_list)
7216 AC_SUBST(xm_defines)
7217 AC_SUBST(use_gcc_stdint)
7218 AC_SUBST(c_target_objs)
7219 AC_SUBST(cxx_target_objs)
7220 AC_SUBST(fortran_target_objs)
7221 AC_SUBST(d_target_objs)
7222 AC_SUBST(target_cpu_default)
7224 AC_SUBST_FILE(language_hooks)
7227 if test x${build} = x${host} ; then
7228 if test x${host} = x${target} ; then
7229 echo "Links are now set up to build a native compiler for ${target}." 1>&2
7231 echo "Links are now set up to build a cross-compiler" 1>&2
7232 echo " from ${host} to ${target}." 1>&2
7235 if test x${host} = x${target} ; then
7236 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
7237 echo " for ${target}." 1>&2
7239 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
7240 echo " from ${host} to ${target}." 1>&2
7244 AC_ARG_VAR(GMPLIBS,[How to link GMP])
7245 AC_ARG_VAR(GMPINC,[How to find GMP include files])
7247 AC_ARG_VAR(ISLLIBS,[How to link isl])
7248 AC_ARG_VAR(ISLINC,[How to find isl include files])
7249 if test "x${ISLLIBS}" != "x" ; then
7250 AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.])
7254 AC_SUBST(pluginlibs)
7255 AC_SUBST(enable_plugin)
7256 if test x"$enable_plugin" = x"yes"; then
7257 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
7261 # Enable --enable-host-shared
7262 AC_ARG_ENABLE(host-shared,
7263 [AS_HELP_STRING([--enable-host-shared],
7264 [build host code as shared libraries])],
7265 [PICFLAG=-fPIC], [PICFLAG=])
7266 AC_SUBST(enable_host_shared)
7270 AC_ARG_ENABLE(libquadmath-support,
7271 [AS_HELP_STRING([--disable-libquadmath-support],
7272 [disable libquadmath support for Fortran])],
7273 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
7274 ENABLE_LIBQUADMATH_SUPPORT=yes)
7275 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
7276 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
7277 [Define to 1 to enable libquadmath support])
7281 # Specify what hash style to use by default.
7282 AC_ARG_WITH([linker-hash-style],
7283 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
7284 [specify the linker hash style])],
7285 [case x"$withval" in
7287 LINKER_HASH_STYLE=sysv
7290 LINKER_HASH_STYLE=gnu
7293 LINKER_HASH_STYLE=both
7296 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
7299 [LINKER_HASH_STYLE=''])
7300 if test x"${LINKER_HASH_STYLE}" != x; then
7301 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
7302 [The linker hash style])
7305 # Specify what should be the default of -fdiagnostics-color option.
7306 AC_ARG_WITH([diagnostics-color],
7307 [AC_HELP_STRING([--with-diagnostics-color={never,auto,auto-if-env,always}],
7308 [specify the default of -fdiagnostics-color option
7309 auto-if-env stands for -fdiagnostics-color=auto if
7310 GCC_COLOR environment variable is present and
7311 -fdiagnostics-color=never otherwise])],
7312 [case x"$withval" in
7314 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_NO
7317 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO
7320 DIAGNOSTICS_COLOR_DEFAULT=-1
7323 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_YES
7326 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-color])
7329 [DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO])
7330 AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT,
7331 [The default for -fdiagnostics-color option])
7333 # Specify what should be the default of -fdiagnostics-urls option.
7334 AC_ARG_WITH([diagnostics-urls],
7335 [AC_HELP_STRING([--with-diagnostics-urls={never,auto,auto-if-env,always}],
7336 [specify the default of -fdiagnostics-urls option
7337 auto-if-env stands for -fdiagnostics-urls=auto if
7338 GCC_URLS or TERM_URLS environment variable is present and
7339 -fdiagnostics-urls=never otherwise])],
7340 [case x"$withval" in
7342 DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_NO
7345 DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_AUTO
7348 DIAGNOSTICS_URLS_DEFAULT=-1
7351 DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_YES
7354 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-urls])
7357 [DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_AUTO])
7358 AC_DEFINE_UNQUOTED(DIAGNOSTICS_URLS_DEFAULT, $DIAGNOSTICS_URLS_DEFAULT,
7359 [The default for -fdiagnostics-urls option])
7361 # Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit
7362 # of jit/jit-playback.c.
7363 gcc_driver_version=`eval "${get_gcc_base_ver} $srcdir/BASE-VER"`
7364 echo "gcc_driver_version: ${gcc_driver_version}"
7365 cat > gcc-driver-name.h <<EOF
7366 #define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_driver_version}${exeext}"
7369 # Check whether --enable-default-pie was given.
7370 AC_ARG_ENABLE(default-pie,
7371 [AS_HELP_STRING([--enable-default-pie],
7372 [enable Position Independent Executable as default])],
7373 enable_default_pie=$enableval,
7374 enable_default_pie=no)
7375 if test x$enable_default_pie = xyes ; then
7376 AC_DEFINE(ENABLE_DEFAULT_PIE, 1,
7377 [Define if your target supports default PIE and it is enabled.])
7379 AC_SUBST([enable_default_pie])
7381 # Check if -fno-PIE works.
7382 AC_CACHE_CHECK([for -fno-PIE option],
7384 [saved_CXXFLAGS="$CXXFLAGS"
7385 CXXFLAGS="$CXXFLAGS -fno-PIE"
7386 AC_COMPILE_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
7387 [gcc_cv_c_no_fpie=yes],
7388 [gcc_cv_c_no_fpie=no])
7389 CXXFLAGS="$saved_CXXFLAGS"])
7390 if test "$gcc_cv_c_no_fpie" = "yes"; then
7391 NO_PIE_CFLAGS="-fno-PIE"
7393 AC_SUBST([NO_PIE_CFLAGS])
7395 # Check if -no-pie works.
7396 AC_CACHE_CHECK([for -no-pie option],
7398 [saved_LDFLAGS="$LDFLAGS"
7399 LDFLAGS="$LDFLAGS -no-pie"
7400 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
7401 [gcc_cv_no_pie=yes],
7403 LDFLAGS="$saved_LDFLAGS"])
7404 if test "$gcc_cv_no_pie" = "yes"; then
7405 NO_PIE_FLAG="-no-pie"
7407 AC_SUBST([NO_PIE_FLAG])
7409 # Enable Intel CET on Intel CET enabled host if jit is enabled.
7410 GCC_CET_HOST_FLAGS(CET_HOST_FLAGS)
7411 case x$enable_languages in
7418 AC_SUBST(CET_HOST_FLAGS)
7420 # Check linker supports '-z bndplt'
7421 ld_bndplt_support=no
7422 AC_MSG_CHECKING(linker -z bndplt option)
7423 if test x"$ld_is_gold" = xno; then
7424 if test $in_tree_ld = yes ; then
7425 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
7426 ld_bndplt_support=yes
7428 elif test x$gcc_cv_ld != x; then
7429 # Check if linker supports -a bndplt option
7430 if $gcc_cv_ld --help 2>&1 | grep -- '-z bndplt' > /dev/null; then
7431 ld_bndplt_support=yes
7435 if test x"$ld_bndplt_support" = xyes; then
7436 AC_DEFINE(HAVE_LD_BNDPLT_SUPPORT, 1,
7437 [Define if your linker supports -z bndplt])
7439 AC_MSG_RESULT($ld_bndplt_support)
7441 # Check linker supports '--push-state'/'--pop-state'
7442 ld_pushpopstate_support=no
7443 AC_MSG_CHECKING(linker --push-state/--pop-state options)
7444 if test x"$ld_is_gold" = xno; then
7445 if test $in_tree_ld = yes ; then
7446 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
7447 ld_pushpopstate_support=yes
7449 elif test x$gcc_cv_ld != x; then
7450 # Check if linker supports --push-state/--pop-state options
7451 if $gcc_cv_ld --help 2>&1 | grep -- '--push-state' > /dev/null; then
7452 ld_pushpopstate_support=yes
7456 if test x"$ld_pushpopstate_support" = xyes; then
7457 AC_DEFINE(HAVE_LD_PUSHPOPSTATE_SUPPORT, 1,
7458 [Define if your linker supports --push-state/--pop-state])
7460 AC_MSG_RESULT($ld_pushpopstate_support)
7462 # On s390, float_t has historically been statically defined as double for no
7463 # good reason. To comply with the C standard in the light of this definition,
7464 # gcc has evaluated float expressions in double precision when in
7465 # standards-compatible mode or when given -fexcess-precision=standard. To enable
7466 # a smooth transition towards the new model used by most architectures, where
7467 # gcc describes its behavior via the macro __FLT_EVAL_METHOD__ and glibc derives
7468 # float_t from that, this behavior can be configured with
7469 # --enable-s390-excess-float-precision. When given as enabled, that flag selects
7470 # the old model. When omitted, native builds and cross compiles that have target
7471 # libc headers will detect whether libc clamps float_t to double and in that
7472 # case maintain the old model. Otherwise, they will default to the new model.
7473 AC_ARG_ENABLE(s390-excess-float-precision,
7474 [AS_HELP_STRING([--enable-s390-excess-float-precision],
7475 [on s390 targets, evaluate float with double precision
7476 when in standards-conforming mode])],
7477 [],[enable_s390_excess_float_precision=auto])
7481 if test x"$enable_s390_excess_float_precision" = xauto; then
7482 # Can we autodetect the behavior of the target libc?
7483 if test "$target" = "$host" -a "$host" = "$build"; then
7484 enable_s390_excess_float_precision=autodetect
7485 elif test "x$with_headers" != xno; then
7486 # cross build. are target headers available?
7487 # carefully coerce the build-system compiler to use target headers
7488 saved_CXXFLAGS="$CXXFLAGS"
7489 CROSS_TEST_CXXFLAGS="-nostdinc ${XGCC_FLAGS_FOR_TARGET//-B/-idirafter/}"
7490 CXXFLAGS="$CROSS_TEST_CXXFLAGS"
7491 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
7493 ]])], [enable_s390_excess_float_precision=autodetect], [])
7494 CXXFLAGS="$saved_CXXFLAGS"
7497 if test x"$enable_s390_excess_float_precision" = xautodetect; then
7498 saved_CXXFLAGS="$CXXFLAGS"
7499 if ! test "$target" = "$host" -a "$host" = "$build"; then
7500 CXXFLAGS="$CROSS_TEST_CXXFLAGS"
7501 unset CROSS_TEST_CXXFLAGS
7503 AC_CACHE_CHECK([for glibc clamping float_t to double],
7504 gcc_cv_float_t_clamped_to_double, [
7505 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
7506 #define __FLT_EVAL_METHOD__ 0
7508 int dummy[sizeof(float_t) == sizeof(double) ? 1 : -1];
7510 [gcc_cv_float_t_clamped_to_double=yes],
7511 [gcc_cv_float_t_clamped_to_double=no])])
7512 CXXFLAGS="$saved_CXXFLAGS"
7513 enable_s390_excess_float_precision="$gcc_cv_float_t_clamped_to_double"
7515 # no way to detect behavior of target libc, default to new model
7516 enable_s390_excess_float_precision=no
7520 GCC_TARGET_TEMPLATE(ENABLE_S390_EXCESS_FLOAT_PRECISION)
7521 if test x"$enable_s390_excess_float_precision" = xyes; then
7522 AC_DEFINE(ENABLE_S390_EXCESS_FLOAT_PRECISION, 1,
7523 [Define to enable evaluating float expressions with double precision in
7524 standards-compatible mode on s390 targets.])
7529 # Configure the subdirectories
7530 # AC_CONFIG_SUBDIRS($subdirs)
7532 # Create the Makefile
7533 # and configure language subdirectories
7534 AC_CONFIG_FILES($all_outputs)
7536 AC_CONFIG_COMMANDS([default],
7538 case ${CONFIG_HEADERS} in
7539 *auto-host.h:config.in*)
7542 # Make sure all the subdirs exist.
7543 for d in $subdirs doc build common c-family
7545 test -d $d || mkdir $d
7548 [subdirs='$subdirs'])